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 #ifndef P2P_MAX_CLIENT_IDLE
  51 /*
  52  * How many seconds to try to reconnect to the GO when connection in P2P client
  53  * role has been lost.
  54  */
  55 #define P2P_MAX_CLIENT_IDLE 10
  56 #endif /* P2P_MAX_CLIENT_IDLE */
  57
  58 #ifndef P2P_MAX_INITIAL_CONN_WAIT
  59 /*
  60  * How many seconds to wait for initial 4-way handshake to get completed after
  61  * WPS provisioning step or after the re-invocation of a persistent group on a
  62  * P2P Client.
  63  */
  64 #define P2P_MAX_INITIAL_CONN_WAIT 10
  65 #endif /* P2P_MAX_INITIAL_CONN_WAIT */
  66
  67 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO
  68 /*
  69  * How many seconds to wait for initial 4-way handshake to get completed after
  70  * WPS provisioning step on the GO. This controls the extra time the P2P
  71  * operation is considered to be in progress (e.g., to delay other scans) after
  72  * WPS provisioning has been completed on the GO during group formation.
  73  */
  74 #define P2P_MAX_INITIAL_CONN_WAIT_GO 10
  75 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO */
  76
  77 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE
  78 /*
  79  * How many seconds to wait for initial 4-way handshake to get completed after
  80  * re-invocation of a persistent group on the GO when the client is expected
  81  * to connect automatically (no user interaction).
  82  */
  83 #define P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 15
  84 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE */
  85
  86 #define P2P_MGMT_DEVICE_PREFIX          "p2p-dev-"
  87
  88 enum p2p_group_removal_reason {
  89         P2P_GROUP_REMOVAL_UNKNOWN,
  90         P2P_GROUP_REMOVAL_SILENT,
  91         P2P_GROUP_REMOVAL_FORMATION_FAILED,
  92         P2P_GROUP_REMOVAL_REQUESTED,
  93         P2P_GROUP_REMOVAL_IDLE_TIMEOUT,
  94         P2P_GROUP_REMOVAL_UNAVAILABLE,
  95         P2P_GROUP_REMOVAL_GO_ENDING_SESSION,
  96         P2P_GROUP_REMOVAL_PSK_FAILURE,
  97         P2P_GROUP_REMOVAL_FREQ_CONFLICT
  98 };
  99
 100
 101 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
 102 static struct wpa_supplicant *
 103 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
 104                          int go);
 105 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
 106                                const u8 *ssid, size_t ssid_len);
 107 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
 108                                    const u8 *ssid, size_t ssid_len);
 109 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
 110 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
 111                          const u8 *dev_addr, enum p2p_wps_method wps_method,
 112                          int auto_join, int freq,
 113                          const u8 *ssid, size_t ssid_len);
 114 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
 115 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
 116 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
 117 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
 118 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
 119                                              void *timeout_ctx);
 120 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx);
 121 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
 122                                        int group_added);
 123 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s);
 124 static void wpas_stop_listen(void *ctx);
 125 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx);
 126 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s);
 127 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
 128                                         enum wpa_driver_if_type type);
 129 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
 130                                             int already_deleted);
 131
 132
 133 /*
 134  * Get the number of concurrent channels that the HW can operate, but that are
 135  * currently not in use by any of the wpa_supplicant interfaces.
 136  */
 137 static int wpas_p2p_num_unused_channels(struct wpa_supplicant *wpa_s)
 138 {
 139         int *freqs;
 140         int num, unused;
 141
 142         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
 143         if (!freqs)
 144                 return -1;
 145
 146         num = get_shared_radio_freqs(wpa_s, freqs,
 147                                      wpa_s->num_multichan_concurrent);
 148         os_free(freqs);
 149
 150         unused = wpa_s->num_multichan_concurrent - num;
 151         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: num_unused_channels: %d", unused);
 152         return unused;
 153 }
 154
 155
 156 /*
 157  * Get the frequencies that are currently in use by one or more of the virtual
 158  * interfaces, and that are also valid for P2P operation.
 159  */
 160 static unsigned int
 161 wpas_p2p_valid_oper_freqs(struct wpa_supplicant *wpa_s,
 162                           struct wpa_used_freq_data *p2p_freqs,
 163                           unsigned int len)
 164 {
 165         struct wpa_used_freq_data *freqs;
 166         unsigned int num, i, j;
 167
 168         freqs = os_calloc(wpa_s->num_multichan_concurrent,
 169                           sizeof(struct wpa_used_freq_data));
 170         if (!freqs)
 171                 return 0;
 172
 173         num = get_shared_radio_freqs_data(wpa_s, freqs,
 174                                           wpa_s->num_multichan_concurrent);
 175
 176         os_memset(p2p_freqs, 0, sizeof(struct wpa_used_freq_data) * len);
 177
 178         for (i = 0, j = 0; i < num && j < len; i++) {
 179                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
 180                         p2p_freqs[j++] = freqs[i];
 181         }
 182
 183         os_free(freqs);
 184
 185         dump_freq_data(wpa_s, "valid for P2P", p2p_freqs, j);
 186
 187         return j;
 188 }
 189
 190
 191 static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s,
 192                                              int freq)
 193 {
 194         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 195                 return;
 196
 197         /* Use the wpa_s used to control the P2P Device operation */
 198         wpa_s = wpa_s->global->p2p_init_wpa_s;
 199
 200         if (wpa_s->conf->p2p_ignore_shared_freq &&
 201             freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
 202             wpas_p2p_num_unused_channels(wpa_s) > 0) {
 203                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz due to p2p_ignore_shared_freq=1 configuration",
 204                            freq);
 205                 freq = 0;
 206         }
 207         p2p_set_own_freq_preference(wpa_s->global->p2p, freq);
 208 }
 209
 210
 211 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
 212                                       struct wpa_scan_results *scan_res)
 213 {
 214         size_t i;
 215
 216         if (wpa_s->p2p_scan_work) {
 217                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
 218                 wpa_s->p2p_scan_work = NULL;
 219                 radio_work_done(work);
 220         }
 221
 222         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 223                 return;
 224
 225         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
 226                    (int) scan_res->num);
 227
 228         for (i = 0; i < scan_res->num; i++) {
 229                 struct wpa_scan_res *bss = scan_res->res[i];
 230                 struct os_reltime time_tmp_age, entry_ts;
 231                 const u8 *ies;
 232                 size_t ies_len;
 233
 234                 time_tmp_age.sec = bss->age / 1000;
 235                 time_tmp_age.usec = (bss->age % 1000) * 1000;
 236                 os_reltime_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts);
 237
 238                 ies = (const u8 *) (bss + 1);
 239                 ies_len = bss->ie_len;
 240                 if (bss->beacon_ie_len > 0 &&
 241                     !wpa_scan_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
 242                     wpa_scan_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
 243                         wpa_printf(MSG_DEBUG, "P2P: Use P2P IE(s) from Beacon frame since no P2P IE(s) in Probe Response frames received for "
 244                                    MACSTR, MAC2STR(bss->bssid));
 245                         ies = ies + ies_len;
 246                         ies_len = bss->beacon_ie_len;
 247                 }
 248
 249
 250                 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
 251                                          bss->freq, &entry_ts, bss->level,
 252                                          ies, ies_len) > 0)
 253                         break;
 254         }
 255
 256         p2p_scan_res_handled(wpa_s->global->p2p);
 257 }
 258
 259
 260 static void wpas_p2p_trigger_scan_cb(struct wpa_radio_work *work, int deinit)
 261 {
 262         struct wpa_supplicant *wpa_s = work->wpa_s;
 263         struct wpa_driver_scan_params *params = work->ctx;
 264         int ret;
 265
 266         if (deinit) {
 267                 if (!work->started) {
 268                         wpa_scan_free_params(params);
 269                         return;
 270                 }
 271
 272                 wpa_s->p2p_scan_work = NULL;
 273                 return;
 274         }
 275
 276         ret = wpa_drv_scan(wpa_s, params);
 277         wpa_scan_free_params(params);
 278         work->ctx = NULL;
 279         if (ret) {
 280                 radio_work_done(work);
 281                 p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 282                 return;
 283         }
 284
 285         p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 286         os_get_reltime(&wpa_s->scan_trigger_time);
 287         wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 288         wpa_s->own_scan_requested = 1;
 289         wpa_s->p2p_scan_work = work;
 290 }
 291
 292
 293 static int wpas_p2p_search_social_channel(struct wpa_supplicant *wpa_s,
 294                                           int freq)
 295 {
 296         if (wpa_s->global->p2p_24ghz_social_channels &&
 297             (freq == 2412 || freq == 2437 || freq == 2462)) {
 298                 /*
 299                  * Search all social channels regardless of whether these have
 300                  * been disabled for P2P operating channel use to avoid missing
 301                  * peers.
 302                  */
 303                 return 1;
 304         }
 305         return p2p_supported_freq(wpa_s->global->p2p, freq);
 306 }
 307
 308
 309 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
 310                          unsigned int num_req_dev_types,
 311                          const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
 312 {
 313         struct wpa_supplicant *wpa_s = ctx;
 314         struct wpa_driver_scan_params *params = NULL;
 315         struct wpabuf *wps_ie, *ies;
 316         unsigned int num_channels = 0;
 317         int social_channels_freq[] = { 2412, 2437, 2462, 60480 };
 318         size_t ielen;
 319         u8 *n, i;
 320
 321         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 322                 return -1;
 323
 324         if (wpa_s->p2p_scan_work) {
 325                 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending");
 326                 return -1;
 327         }
 328
 329         params = os_zalloc(sizeof(*params));
 330         if (params == NULL)
 331                 return -1;
 332
 333         /* P2P Wildcard SSID */
 334         params->num_ssids = 1;
 335         n = os_malloc(P2P_WILDCARD_SSID_LEN);
 336         if (n == NULL)
 337                 goto fail;
 338         os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
 339         params->ssids[0].ssid = n;
 340         params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
 341
 342         wpa_s->wps->dev.p2p = 1;
 343         wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
 344                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
 345                                         num_req_dev_types, req_dev_types);
 346         if (wps_ie == NULL)
 347                 goto fail;
 348
 349         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
 350         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
 351         if (ies == NULL) {
 352                 wpabuf_free(wps_ie);
 353                 goto fail;
 354         }
 355         wpabuf_put_buf(ies, wps_ie);
 356         wpabuf_free(wps_ie);
 357
 358         p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);
 359
 360         params->p2p_probe = 1;
 361         n = os_malloc(wpabuf_len(ies));
 362         if (n == NULL) {
 363                 wpabuf_free(ies);
 364                 goto fail;
 365         }
 366         os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies));
 367         params->extra_ies = n;
 368         params->extra_ies_len = wpabuf_len(ies);
 369         wpabuf_free(ies);
 370
 371         switch (type) {
 372         case P2P_SCAN_SOCIAL:
 373                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 1,
 374                                           sizeof(int));
 375                 if (params->freqs == NULL)
 376                         goto fail;
 377                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 378                         if (wpas_p2p_search_social_channel(
 379                                     wpa_s, social_channels_freq[i]))
 380                                 params->freqs[num_channels++] =
 381                                         social_channels_freq[i];
 382                 }
 383                 params->freqs[num_channels++] = 0;
 384                 break;
 385         case P2P_SCAN_FULL:
 386                 break;
 387         case P2P_SCAN_SPECIFIC:
 388                 params->freqs = os_calloc(2, sizeof(int));
 389                 if (params->freqs == NULL)
 390                         goto fail;
 391                 params->freqs[0] = freq;
 392                 params->freqs[1] = 0;
 393                 break;
 394         case P2P_SCAN_SOCIAL_PLUS_ONE:
 395                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 2,
 396                                           sizeof(int));
 397                 if (params->freqs == NULL)
 398                         goto fail;
 399                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 400                         if (wpas_p2p_search_social_channel(
 401                                     wpa_s, social_channels_freq[i]))
 402                                 params->freqs[num_channels++] =
 403                                         social_channels_freq[i];
 404                 }
 405                 if (p2p_supported_freq(wpa_s->global->p2p, freq))
 406                         params->freqs[num_channels++] = freq;
 407                 params->freqs[num_channels++] = 0;
 408                 break;
 409         }
 410
 411         radio_remove_works(wpa_s, "p2p-scan", 0);
 412         if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb,
 413                            params) < 0)
 414                 goto fail;
 415         return 0;
 416
 417 fail:
 418         wpa_scan_free_params(params);
 419         return -1;
 420 }
 421
 422
 423 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 424 {
 425         switch (p2p_group_interface) {
 426         case P2P_GROUP_INTERFACE_PENDING:
 427                 return WPA_IF_P2P_GROUP;
 428         case P2P_GROUP_INTERFACE_GO:
 429                 return WPA_IF_P2P_GO;
 430         case P2P_GROUP_INTERFACE_CLIENT:
 431                 return WPA_IF_P2P_CLIENT;
 432         }
 433
 434         return WPA_IF_P2P_GROUP;
 435 }
 436
 437
 438 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 439                                                   const u8 *ssid,
 440                                                   size_t ssid_len, int *go)
 441 {
 442         struct wpa_ssid *s;
 443
 444         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 445                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 446                         if (s->disabled != 0 || !s->p2p_group ||
 447                             s->ssid_len != ssid_len ||
 448                             os_memcmp(ssid, s->ssid, ssid_len) != 0)
 449                                 continue;
 450                         if (s->mode == WPAS_MODE_P2P_GO &&
 451                             s != wpa_s->current_ssid)
 452                                 continue;
 453                         if (go)
 454                                 *go = s->mode == WPAS_MODE_P2P_GO;
 455                         return wpa_s;
 456                 }
 457         }
 458
 459         return NULL;
 460 }
 461
 462
 463 static void run_wpas_p2p_disconnect(void *eloop_ctx, void *timeout_ctx)
 464 {
 465         struct wpa_supplicant *wpa_s = eloop_ctx;
 466         wpa_printf(MSG_DEBUG,
 467                    "P2P: Complete previously requested removal of %s",
 468                    wpa_s->ifname);
 469         wpas_p2p_disconnect(wpa_s);
 470 }
 471
 472
 473 static int wpas_p2p_disconnect_safely(struct wpa_supplicant *wpa_s,
 474                                       struct wpa_supplicant *calling_wpa_s)
 475 {
 476         if (calling_wpa_s == wpa_s && wpa_s &&
 477             wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 478                 /*
 479                  * The calling wpa_s instance is going to be removed. Do that
 480                  * from an eloop callback to keep the instance available until
 481                  * the caller has returned. This my be needed, e.g., to provide
 482                  * control interface responses on the per-interface socket.
 483                  */
 484                 if (eloop_register_timeout(0, 0, run_wpas_p2p_disconnect,
 485                                            wpa_s, NULL) < 0)
 486                         return -1;
 487                 return 0;
 488         }
 489
 490         return wpas_p2p_disconnect(wpa_s);
 491 }
 492
 493
 494 /* Determine total number of clients in active groups where we are the GO */
 495 static unsigned int p2p_group_go_member_count(struct wpa_supplicant *wpa_s)
 496 {
 497         unsigned int count = 0;
 498         struct wpa_ssid *s;
 499
 500         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 501                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 502                         wpa_printf(MSG_DEBUG,
 503                                    "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d",
 504                                    wpa_s, s, s->disabled, s->p2p_group,
 505                                    s->mode);
 506                         if (!s->disabled && s->p2p_group &&
 507                             s->mode == WPAS_MODE_P2P_GO) {
 508                                 count += p2p_get_group_num_members(
 509                                         wpa_s->p2p_group);
 510                         }
 511                 }
 512         }
 513
 514         return count;
 515 }
 516
 517
 518 /* Find an interface for a P2P group where we are the GO */
 519 static struct wpa_supplicant *
 520 wpas_p2p_get_go_group(struct wpa_supplicant *wpa_s)
 521 {
 522         struct wpa_supplicant *save = NULL;
 523         struct wpa_ssid *s;
 524
 525         if (!wpa_s)
 526                 return NULL;
 527
 528         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 529                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 530                         if (s->disabled || !s->p2p_group ||
 531                             s->mode != WPAS_MODE_P2P_GO)
 532                                 continue;
 533
 534                         /* Prefer a group with connected clients */
 535                         if (p2p_get_group_num_members(wpa_s->p2p_group))
 536                                 return wpa_s;
 537                         save = wpa_s;
 538                 }
 539         }
 540
 541         /* No group with connected clients, so pick the one without (if any) */
 542         return save;
 543 }
 544
 545
 546 /* Find an active P2P group where we are the GO */
 547 static struct wpa_ssid * wpas_p2p_group_go_ssid(struct wpa_supplicant *wpa_s,
 548                                                 u8 *bssid)
 549 {
 550         struct wpa_ssid *s, *empty = NULL;
 551
 552         if (!wpa_s)
 553                 return 0;
 554
 555         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 556                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 557                         if (s->disabled || !s->p2p_group ||
 558                             s->mode != WPAS_MODE_P2P_GO)
 559                                 continue;
 560
 561                         os_memcpy(bssid, wpa_s->own_addr, ETH_ALEN);
 562                         if (p2p_get_group_num_members(wpa_s->p2p_group))
 563                                 return s;
 564                         empty = s;
 565                 }
 566         }
 567
 568         return empty;
 569 }
 570
 571
 572 /* Find a persistent group where we are the GO */
 573 static struct wpa_ssid *
 574 wpas_p2p_get_persistent_go(struct wpa_supplicant *wpa_s)
 575 {
 576         struct wpa_ssid *s;
 577
 578         for (s = wpa_s->conf->ssid; s; s = s->next) {
 579                 if (s->disabled == 2 && s->mode == WPAS_MODE_P2P_GO)
 580                         return s;
 581         }
 582
 583         return NULL;
 584 }
 585
 586
 587 static u8 p2ps_group_capability(void *ctx, u8 incoming, u8 role)
 588 {
 589         struct wpa_supplicant *wpa_s = ctx, *tmp_wpa_s;
 590         struct wpa_ssid *s;
 591         u8 conncap = P2PS_SETUP_NONE;
 592         unsigned int owned_members = 0;
 593         unsigned int owner = 0;
 594         unsigned int client = 0;
 595         struct wpa_supplicant *go_wpa_s;
 596         struct wpa_ssid *persistent_go;
 597         int p2p_no_group_iface;
 598
 599         wpa_printf(MSG_DEBUG, "P2P: Conncap - in:%d role:%d", incoming, role);
 600
 601         /*
 602          * For non-concurrent capable devices:
 603          * If persistent_go, then no new.
 604          * If GO, then no client.
 605          * If client, then no GO.
 606          */
 607         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
 608         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
 609         p2p_no_group_iface = !wpas_p2p_create_iface(wpa_s);
 610
 611         wpa_printf(MSG_DEBUG, "P2P: GO(iface)=%p persistent(ssid)=%p",
 612                    go_wpa_s, persistent_go);
 613
 614         for (tmp_wpa_s = wpa_s->global->ifaces; tmp_wpa_s;
 615              tmp_wpa_s = tmp_wpa_s->next) {
 616                 for (s = tmp_wpa_s->conf->ssid; s; s = s->next) {
 617                         wpa_printf(MSG_DEBUG,
 618                                    "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d",
 619                                    tmp_wpa_s, s, s->disabled,
 620                                    s->p2p_group, s->mode);
 621                         if (!s->disabled && s->p2p_group) {
 622                                 if (s->mode == WPAS_MODE_P2P_GO) {
 623                                         owned_members +=
 624                                                 p2p_get_group_num_members(
 625                                                         tmp_wpa_s->p2p_group);
 626                                         owner++;
 627                                 } else
 628                                         client++;
 629                         }
 630                 }
 631         }
 632
 633         /* If not concurrent, restrict our choices */
 634         if (p2p_no_group_iface) {
 635                 wpa_printf(MSG_DEBUG, "P2P: p2p_no_group_iface");
 636
 637                 if (client)
 638                         return P2PS_SETUP_NONE;
 639
 640                 if (go_wpa_s) {
 641                         if (role == P2PS_SETUP_CLIENT ||
 642                             incoming == P2PS_SETUP_GROUP_OWNER ||
 643                             p2p_client_limit_reached(go_wpa_s->p2p_group))
 644                                 return P2PS_SETUP_NONE;
 645
 646                         return P2PS_SETUP_GROUP_OWNER;
 647                 }
 648
 649                 if (persistent_go) {
 650                         if (role == P2PS_SETUP_NONE || role == P2PS_SETUP_NEW) {
 651                                 if (!incoming)
 652                                         return P2PS_SETUP_GROUP_OWNER |
 653                                                 P2PS_SETUP_CLIENT;
 654                                 if (incoming == P2PS_SETUP_NEW) {
 655                                         u8 r;
 656
 657                                         if (os_get_random(&r, sizeof(r)) < 0 ||
 658                                             (r & 1))
 659                                                 return P2PS_SETUP_CLIENT;
 660                                         return P2PS_SETUP_GROUP_OWNER;
 661                                 }
 662                         }
 663                 }
 664         }
 665
 666         /* If a required role has been specified, handle it here */
 667         if (role && role != P2PS_SETUP_NEW) {
 668                 switch (incoming) {
 669                 case P2PS_SETUP_NONE:
 670                 case P2PS_SETUP_NEW:
 671                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 672                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 673                         conncap = role;
 674                         goto grp_owner;
 675
 676                 case P2PS_SETUP_GROUP_OWNER:
 677                         /*
 678                          * Must be a complimentary role - cannot be a client to
 679                          * more than one peer.
 680                          */
 681                         if (incoming == role || client)
 682                                 return P2PS_SETUP_NONE;
 683
 684                         return P2PS_SETUP_CLIENT;
 685
 686                 case P2PS_SETUP_CLIENT:
 687                         /* Must be a complimentary role */
 688                         if (incoming != role) {
 689                                 conncap = P2PS_SETUP_GROUP_OWNER;
 690                                 goto grp_owner;
 691                         }
 692
 693                 default:
 694                         return P2PS_SETUP_NONE;
 695                 }
 696         }
 697
 698         /*
 699          * For now, we only will support ownership of one group, and being a
 700          * client of one group. Therefore, if we have either an existing GO
 701          * group, or an existing client group, we will not do a new GO
 702          * negotiation, but rather try to re-use the existing groups.
 703          */
 704         switch (incoming) {
 705         case P2PS_SETUP_NONE:
 706         case P2PS_SETUP_NEW:
 707                 if (client)
 708                         conncap = P2PS_SETUP_GROUP_OWNER;
 709                 else if (!owned_members)
 710                         conncap = P2PS_SETUP_NEW;
 711                 else if (incoming == P2PS_SETUP_NONE)
 712                         conncap = P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT;
 713                 else
 714                         conncap = P2PS_SETUP_CLIENT;
 715                 break;
 716
 717         case P2PS_SETUP_CLIENT:
 718                 conncap = P2PS_SETUP_GROUP_OWNER;
 719                 break;
 720
 721         case P2PS_SETUP_GROUP_OWNER:
 722                 if (!client)
 723                         conncap = P2PS_SETUP_CLIENT;
 724                 break;
 725
 726         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 727         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 728                 if (client)
 729                         conncap = P2PS_SETUP_GROUP_OWNER;
 730                 else {
 731                         u8 r;
 732
 733                         if (os_get_random(&r, sizeof(r)) < 0 ||
 734                             (r & 1))
 735                                 conncap = P2PS_SETUP_CLIENT;
 736                         else
 737                                 conncap = P2PS_SETUP_GROUP_OWNER;
 738                 }
 739                 break;
 740
 741         default:
 742                 return P2PS_SETUP_NONE;
 743         }
 744
 745 grp_owner:
 746         if ((conncap & P2PS_SETUP_GROUP_OWNER) ||
 747             (!incoming && (conncap & P2PS_SETUP_NEW))) {
 748                 if (go_wpa_s && p2p_client_limit_reached(go_wpa_s->p2p_group))
 749                         conncap &= ~P2PS_SETUP_GROUP_OWNER;
 750                 wpa_printf(MSG_DEBUG, "P2P: GOs:%d members:%d conncap:%d",
 751                            owner, owned_members, conncap);
 752
 753                 s = wpas_p2p_get_persistent_go(wpa_s);
 754
 755                 if (!s && !owner && p2p_no_group_iface) {
 756                         p2p_set_intended_addr(wpa_s->global->p2p,
 757                                               wpa_s->own_addr);
 758                 } else if (!s && !owner) {
 759                         if (wpas_p2p_add_group_interface(wpa_s,
 760                                                          WPA_IF_P2P_GO) < 0) {
 761                                 wpa_printf(MSG_ERROR,
 762                                            "P2P: Failed to allocate a new interface for the group");
 763                                 return P2PS_SETUP_NONE;
 764                         }
 765                         wpa_s->global->pending_group_iface_for_p2ps = 1;
 766                         p2p_set_intended_addr(wpa_s->global->p2p,
 767                                               wpa_s->pending_interface_addr);
 768                 }
 769         }
 770
 771         return conncap;
 772 }
 773
 774
 775 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 776                                  enum p2p_group_removal_reason removal_reason)
 777 {
 778         struct wpa_ssid *ssid;
 779         char *gtype;
 780         const char *reason;
 781
 782         ssid = wpa_s->current_ssid;
 783         if (ssid == NULL) {
 784                 /*
 785                  * The current SSID was not known, but there may still be a
 786                  * pending P2P group interface waiting for provisioning or a
 787                  * P2P group that is trying to reconnect.
 788                  */
 789                 ssid = wpa_s->conf->ssid;
 790                 while (ssid) {
 791                         if (ssid->p2p_group && ssid->disabled != 2)
 792                                 break;
 793                         ssid = ssid->next;
 794                 }
 795                 if (ssid == NULL &&
 796                         wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
 797                 {
 798                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 799                                    "not found");
 800                         return -1;
 801                 }
 802         }
 803         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 804                 gtype = "GO";
 805         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 806                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 807                 wpa_s->reassociate = 0;
 808                 wpa_s->disconnected = 1;
 809                 gtype = "client";
 810         } else
 811                 gtype = "GO";
 812
 813         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 814                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 815
 816         if (os_strcmp(gtype, "client") == 0) {
 817                 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 818                 if (eloop_is_timeout_registered(wpas_p2p_psk_failure_removal,
 819                                                 wpa_s, NULL)) {
 820                         wpa_printf(MSG_DEBUG,
 821                                    "P2P: PSK failure removal was scheduled, so use PSK failure as reason for group removal");
 822                         removal_reason = P2P_GROUP_REMOVAL_PSK_FAILURE;
 823                         eloop_cancel_timeout(wpas_p2p_psk_failure_removal,
 824                                              wpa_s, NULL);
 825                 }
 826         }
 827
 828         if (wpa_s->cross_connect_in_use) {
 829                 wpa_s->cross_connect_in_use = 0;
 830                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 831                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 832                                wpa_s->ifname, wpa_s->cross_connect_uplink);
 833         }
 834         switch (removal_reason) {
 835         case P2P_GROUP_REMOVAL_REQUESTED:
 836                 reason = " reason=REQUESTED";
 837                 break;
 838         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 839                 reason = " reason=FORMATION_FAILED";
 840                 break;
 841         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 842                 reason = " reason=IDLE";
 843                 break;
 844         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 845                 reason = " reason=UNAVAILABLE";
 846                 break;
 847         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 848                 reason = " reason=GO_ENDING_SESSION";
 849                 break;
 850         case P2P_GROUP_REMOVAL_PSK_FAILURE:
 851                 reason = " reason=PSK_FAILURE";
 852                 break;
 853         case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
 854                 reason = " reason=FREQ_CONFLICT";
 855                 break;
 856         default:
 857                 reason = "";
 858                 break;
 859         }
 860         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 861                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 862                                P2P_EVENT_GROUP_REMOVED "%s %s%s",
 863                                wpa_s->ifname, gtype, reason);
 864         }
 865
 866         if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0)
 867                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout");
 868         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 869                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 870         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
 871                                  wpa_s->parent, NULL) > 0) {
 872                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
 873                            "timeout");
 874                 wpa_s->p2p_in_provisioning = 0;
 875         }
 876
 877         wpa_s->p2p_in_invitation = 0;
 878
 879         /*
 880          * Make sure wait for the first client does not remain active after the
 881          * group has been removed.
 882          */
 883         wpa_s->global->p2p_go_wait_client.sec = 0;
 884
 885         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 886                 struct wpa_global *global;
 887                 char *ifname;
 888                 enum wpa_driver_if_type type;
 889                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 890                         wpa_s->ifname);
 891                 global = wpa_s->global;
 892                 ifname = os_strdup(wpa_s->ifname);
 893                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 894                 eloop_cancel_timeout(run_wpas_p2p_disconnect, wpa_s, NULL);
 895                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 896                 wpa_s = global->ifaces;
 897                 if (wpa_s && ifname)
 898                         wpa_drv_if_remove(wpa_s, type, ifname);
 899                 os_free(ifname);
 900                 return 1;
 901         }
 902
 903         if (!wpa_s->p2p_go_group_formation_completed) {
 904                 wpa_s->global->p2p_group_formation = NULL;
 905                 wpa_s->p2p_in_provisioning = 0;
 906         }
 907
 908         wpa_s->show_group_started = 0;
 909         os_free(wpa_s->go_params);
 910         wpa_s->go_params = NULL;
 911
 912         os_free(wpa_s->p2p_group_common_freqs);
 913         wpa_s->p2p_group_common_freqs = NULL;
 914         wpa_s->p2p_group_common_freqs_num = 0;
 915
 916         wpa_s->waiting_presence_resp = 0;
 917
 918         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 919         if (ssid && (ssid->p2p_group ||
 920                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 921                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 922                 int id = ssid->id;
 923                 if (ssid == wpa_s->current_ssid) {
 924                         wpa_sm_set_config(wpa_s->wpa, NULL);
 925                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 926                         wpa_s->current_ssid = NULL;
 927                 }
 928                 /*
 929                  * Networks objects created during any P2P activities are not
 930                  * exposed out as they might/will confuse certain non-P2P aware
 931                  * applications since these network objects won't behave like
 932                  * regular ones.
 933                  *
 934                  * Likewise, we don't send out network removed signals for such
 935                  * network objects.
 936                  */
 937                 wpa_config_remove_network(wpa_s->conf, id);
 938                 wpa_supplicant_clear_status(wpa_s);
 939                 wpa_supplicant_cancel_sched_scan(wpa_s);
 940         } else {
 941                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
 942                            "found");
 943         }
 944         if (wpa_s->ap_iface)
 945                 wpa_supplicant_ap_deinit(wpa_s);
 946         else
 947                 wpa_drv_deinit_p2p_cli(wpa_s);
 948
 949         return 0;
 950 }
 951
 952
 953 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
 954                                      u8 *go_dev_addr,
 955                                      const u8 *ssid, size_t ssid_len)
 956 {
 957         struct wpa_bss *bss;
 958         const u8 *bssid;
 959         struct wpabuf *p2p;
 960         u8 group_capab;
 961         const u8 *addr;
 962
 963         if (wpa_s->go_params)
 964                 bssid = wpa_s->go_params->peer_interface_addr;
 965         else
 966                 bssid = wpa_s->bssid;
 967
 968         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
 969         if (bss == NULL && wpa_s->go_params &&
 970             !is_zero_ether_addr(wpa_s->go_params->peer_device_addr))
 971                 bss = wpa_bss_get_p2p_dev_addr(
 972                         wpa_s, wpa_s->go_params->peer_device_addr);
 973         if (bss == NULL) {
 974                 u8 iface_addr[ETH_ALEN];
 975                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
 976                                            iface_addr) == 0)
 977                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
 978         }
 979         if (bss == NULL) {
 980                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 981                            "group is persistent - BSS " MACSTR " not found",
 982                            MAC2STR(bssid));
 983                 return 0;
 984         }
 985
 986         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
 987         if (p2p == NULL)
 988                 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss,
 989                                                          P2P_IE_VENDOR_TYPE);
 990         if (p2p == NULL) {
 991                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 992                            "group is persistent - BSS " MACSTR
 993                            " did not include P2P IE", MAC2STR(bssid));
 994                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
 995                             (u8 *) (bss + 1), bss->ie_len);
 996                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
 997                             ((u8 *) bss + 1) + bss->ie_len,
 998                             bss->beacon_ie_len);
 999                 return 0;
1000         }
1001
1002         group_capab = p2p_get_group_capab(p2p);
1003         addr = p2p_get_go_dev_addr(p2p);
1004         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
1005                    "group_capab=0x%x", group_capab);
1006         if (addr) {
1007                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
1008                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
1009                            MAC2STR(addr));
1010         } else
1011                 os_memset(go_dev_addr, 0, ETH_ALEN);
1012         wpabuf_free(p2p);
1013
1014         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
1015                    "go_dev_addr=" MACSTR,
1016                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
1017
1018         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
1019 }
1020
1021
1022 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
1023                                            struct wpa_ssid *ssid,
1024                                            const u8 *go_dev_addr)
1025 {
1026         struct wpa_ssid *s;
1027         int changed = 0;
1028
1029         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
1030                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
1031         for (s = wpa_s->conf->ssid; s; s = s->next) {
1032                 if (s->disabled == 2 &&
1033                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
1034                     s->ssid_len == ssid->ssid_len &&
1035                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
1036                         break;
1037         }
1038
1039         if (s) {
1040                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
1041                            "entry");
1042                 if (ssid->passphrase && !s->passphrase)
1043                         changed = 1;
1044                 else if (ssid->passphrase && s->passphrase &&
1045                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
1046                         changed = 1;
1047         } else {
1048                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
1049                            "entry");
1050                 changed = 1;
1051                 s = wpa_config_add_network(wpa_s->conf);
1052                 if (s == NULL)
1053                         return -1;
1054
1055                 /*
1056                  * Instead of network_added we emit persistent_group_added
1057                  * notification. Also to keep the defense checks in
1058                  * persistent_group obj registration method, we set the
1059                  * relevant flags in s to designate it as a persistent group.
1060                  */
1061                 s->p2p_group = 1;
1062                 s->p2p_persistent_group = 1;
1063                 wpas_notify_persistent_group_added(wpa_s, s);
1064                 wpa_config_set_network_defaults(s);
1065         }
1066
1067         s->p2p_group = 1;
1068         s->p2p_persistent_group = 1;
1069         s->disabled = 2;
1070         s->bssid_set = 1;
1071         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
1072         s->mode = ssid->mode;
1073         s->auth_alg = WPA_AUTH_ALG_OPEN;
1074         s->key_mgmt = WPA_KEY_MGMT_PSK;
1075         s->proto = WPA_PROTO_RSN;
1076         s->pairwise_cipher = WPA_CIPHER_CCMP;
1077         s->export_keys = 1;
1078         if (ssid->passphrase) {
1079                 os_free(s->passphrase);
1080                 s->passphrase = os_strdup(ssid->passphrase);
1081         }
1082         if (ssid->psk_set) {
1083                 s->psk_set = 1;
1084                 os_memcpy(s->psk, ssid->psk, 32);
1085         }
1086         if (s->passphrase && !s->psk_set)
1087                 wpa_config_update_psk(s);
1088         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
1089                 os_free(s->ssid);
1090                 s->ssid = os_malloc(ssid->ssid_len);
1091         }
1092         if (s->ssid) {
1093                 s->ssid_len = ssid->ssid_len;
1094                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
1095         }
1096         if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
1097                 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
1098                 wpa_s->global->add_psk = NULL;
1099                 changed = 1;
1100         }
1101
1102         if (changed && wpa_s->conf->update_config &&
1103             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
1104                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1105         }
1106
1107         return s->id;
1108 }
1109
1110
1111 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
1112                                                  const u8 *addr)
1113 {
1114         struct wpa_ssid *ssid, *s;
1115         u8 *n;
1116         size_t i;
1117         int found = 0;
1118         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
1119
1120         ssid = wpa_s->current_ssid;
1121         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
1122             !ssid->p2p_persistent_group)
1123                 return;
1124
1125         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
1126                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
1127                         continue;
1128
1129                 if (s->ssid_len == ssid->ssid_len &&
1130                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
1131                         break;
1132         }
1133
1134         if (s == NULL)
1135                 return;
1136
1137         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
1138                 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, addr,
1139                               ETH_ALEN) != 0)
1140                         continue;
1141
1142                 if (i == s->num_p2p_clients - 1)
1143                         return; /* already the most recent entry */
1144
1145                 /* move the entry to mark it most recent */
1146                 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
1147                            s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
1148                            (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
1149                 os_memcpy(s->p2p_client_list +
1150                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN, addr,
1151                           ETH_ALEN);
1152                 os_memset(s->p2p_client_list +
1153                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1154                           0xff, ETH_ALEN);
1155                 found = 1;
1156                 break;
1157         }
1158
1159         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
1160                 n = os_realloc_array(s->p2p_client_list,
1161                                      s->num_p2p_clients + 1, 2 * ETH_ALEN);
1162                 if (n == NULL)
1163                         return;
1164                 os_memcpy(n + s->num_p2p_clients * 2 * ETH_ALEN, addr,
1165                           ETH_ALEN);
1166                 os_memset(n + s->num_p2p_clients * 2 * ETH_ALEN + ETH_ALEN,
1167                           0xff, ETH_ALEN);
1168                 s->p2p_client_list = n;
1169                 s->num_p2p_clients++;
1170         } else if (!found && s->p2p_client_list) {
1171                 /* Not enough room for an additional entry - drop the oldest
1172                  * entry */
1173                 os_memmove(s->p2p_client_list,
1174                            s->p2p_client_list + 2 * ETH_ALEN,
1175                            (s->num_p2p_clients - 1) * 2 * ETH_ALEN);
1176                 os_memcpy(s->p2p_client_list +
1177                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN,
1178                           addr, ETH_ALEN);
1179                 os_memset(s->p2p_client_list +
1180                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1181                           0xff, ETH_ALEN);
1182         }
1183
1184         if (p2p_wpa_s->conf->update_config &&
1185             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
1186                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1187 }
1188
1189
1190 static void wpas_p2p_group_started(struct wpa_supplicant *wpa_s,
1191                                    int go, struct wpa_ssid *ssid, int freq,
1192                                    const u8 *psk, const char *passphrase,
1193                                    const u8 *go_dev_addr, int persistent,
1194                                    const char *extra)
1195 {
1196         const char *ssid_txt;
1197         char psk_txt[65];
1198
1199         if (psk)
1200                 wpa_snprintf_hex(psk_txt, sizeof(psk_txt), psk, 32);
1201         else
1202                 psk_txt[0] = '\0';
1203
1204         if (ssid)
1205                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
1206         else
1207                 ssid_txt = "";
1208
1209         if (passphrase && passphrase[0] == '\0')
1210                 passphrase = NULL;
1211
1212         /*
1213          * Include PSK/passphrase only in the control interface message and
1214          * leave it out from the debug log entry.
1215          */
1216         wpa_msg_global_ctrl(wpa_s->parent, MSG_INFO,
1217                             P2P_EVENT_GROUP_STARTED
1218                             "%s %s ssid=\"%s\" freq=%d%s%s%s%s%s go_dev_addr="
1219                             MACSTR "%s%s",
1220                             wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1221                             psk ? " psk=" : "", psk_txt,
1222                             passphrase ? " passphrase=\"" : "",
1223                             passphrase ? passphrase : "",
1224                             passphrase ? "\"" : "",
1225                             MAC2STR(go_dev_addr),
1226                             persistent ? " [PERSISTENT]" : "", extra);
1227         wpa_printf(MSG_INFO, P2P_EVENT_GROUP_STARTED
1228                    "%s %s ssid=\"%s\" freq=%d go_dev_addr=" MACSTR "%s%s",
1229                    wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1230                    MAC2STR(go_dev_addr), persistent ? " [PERSISTENT]" : "",
1231                    extra);
1232 }
1233
1234
1235 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
1236                                            int success, int already_deleted)
1237 {
1238         struct wpa_ssid *ssid;
1239         int client;
1240         int persistent;
1241         u8 go_dev_addr[ETH_ALEN];
1242         int network_id = -1;
1243
1244         /*
1245          * This callback is likely called for the main interface. Update wpa_s
1246          * to use the group interface if a new interface was created for the
1247          * group.
1248          */
1249         if (wpa_s->global->p2p_group_formation)
1250                 wpa_s = wpa_s->global->p2p_group_formation;
1251         if (wpa_s->p2p_go_group_formation_completed) {
1252                 wpa_s->global->p2p_group_formation = NULL;
1253                 wpa_s->p2p_in_provisioning = 0;
1254         }
1255         wpa_s->p2p_in_invitation = 0;
1256         wpa_s->group_formation_reported = 1;
1257
1258         if (!success) {
1259                 wpa_msg_global(wpa_s->parent, MSG_INFO,
1260                                P2P_EVENT_GROUP_FORMATION_FAILURE);
1261                 if (already_deleted)
1262                         return;
1263                 wpas_p2p_group_delete(wpa_s,
1264                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
1265                 return;
1266         }
1267
1268         wpa_msg_global(wpa_s->parent, MSG_INFO,
1269                        P2P_EVENT_GROUP_FORMATION_SUCCESS);
1270
1271         ssid = wpa_s->current_ssid;
1272         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
1273                 ssid->mode = WPAS_MODE_P2P_GO;
1274                 p2p_group_notif_formation_done(wpa_s->p2p_group);
1275                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
1276         }
1277
1278         persistent = 0;
1279         if (ssid) {
1280                 client = ssid->mode == WPAS_MODE_INFRA;
1281                 if (ssid->mode == WPAS_MODE_P2P_GO) {
1282                         persistent = ssid->p2p_persistent_group;
1283                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
1284                                   ETH_ALEN);
1285                 } else
1286                         persistent = wpas_p2p_persistent_group(wpa_s,
1287                                                                go_dev_addr,
1288                                                                ssid->ssid,
1289                                                                ssid->ssid_len);
1290         } else {
1291                 client = wpa_s->p2p_group_interface ==
1292                         P2P_GROUP_INTERFACE_CLIENT;
1293                 os_memset(go_dev_addr, 0, ETH_ALEN);
1294         }
1295
1296         wpa_s->show_group_started = 0;
1297         if (client) {
1298                 /*
1299                  * Indicate event only after successfully completed 4-way
1300                  * handshake, i.e., when the interface is ready for data
1301                  * packets.
1302                  */
1303                 wpa_s->show_group_started = 1;
1304         } else {
1305                 wpas_p2p_group_started(wpa_s, 1, ssid,
1306                                        ssid ? ssid->frequency : 0,
1307                                        ssid && ssid->passphrase == NULL &&
1308                                        ssid->psk_set ? ssid->psk : NULL,
1309                                        ssid ? ssid->passphrase : NULL,
1310                                        go_dev_addr, persistent, "");
1311                 wpas_p2p_cross_connect_setup(wpa_s);
1312                 wpas_p2p_set_group_idle_timeout(wpa_s);
1313         }
1314
1315         if (persistent)
1316                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
1317                                                              ssid, go_dev_addr);
1318         else {
1319                 os_free(wpa_s->global->add_psk);
1320                 wpa_s->global->add_psk = NULL;
1321         }
1322         if (network_id < 0 && ssid)
1323                 network_id = ssid->id;
1324         if (!client) {
1325                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1326                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1327         }
1328 }
1329
1330
1331 struct send_action_work {
1332         unsigned int freq;
1333         u8 dst[ETH_ALEN];
1334         u8 src[ETH_ALEN];
1335         u8 bssid[ETH_ALEN];
1336         size_t len;
1337         unsigned int wait_time;
1338         u8 buf[0];
1339 };
1340
1341
1342 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
1343                                               void *timeout_ctx)
1344 {
1345         struct wpa_supplicant *wpa_s = eloop_ctx;
1346
1347         if (!wpa_s->p2p_send_action_work)
1348                 return;
1349
1350         wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
1351         os_free(wpa_s->p2p_send_action_work->ctx);
1352         radio_work_done(wpa_s->p2p_send_action_work);
1353         wpa_s->p2p_send_action_work = NULL;
1354 }
1355
1356
1357 static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s)
1358 {
1359         if (wpa_s->p2p_send_action_work) {
1360                 struct send_action_work *awork;
1361                 awork = wpa_s->p2p_send_action_work->ctx;
1362                 if (awork->wait_time == 0) {
1363                         os_free(awork);
1364                         radio_work_done(wpa_s->p2p_send_action_work);
1365                         wpa_s->p2p_send_action_work = NULL;
1366                 } else {
1367                         /*
1368                          * In theory, this should not be needed, but number of
1369                          * places in the P2P code is still using non-zero wait
1370                          * time for the last Action frame in the sequence and
1371                          * some of these do not call send_action_done().
1372                          */
1373                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1374                                              wpa_s, NULL);
1375                         eloop_register_timeout(
1376                                 0, awork->wait_time * 1000,
1377                                 wpas_p2p_send_action_work_timeout,
1378                                 wpa_s, NULL);
1379                 }
1380         }
1381 }
1382
1383
1384 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
1385                                            unsigned int freq,
1386                                            const u8 *dst, const u8 *src,
1387                                            const u8 *bssid,
1388                                            const u8 *data, size_t data_len,
1389                                            enum offchannel_send_action_result
1390                                            result)
1391 {
1392         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
1393
1394         wpas_p2p_action_tx_clear(wpa_s);
1395
1396         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
1397                 return;
1398
1399         switch (result) {
1400         case OFFCHANNEL_SEND_ACTION_SUCCESS:
1401                 res = P2P_SEND_ACTION_SUCCESS;
1402                 break;
1403         case OFFCHANNEL_SEND_ACTION_NO_ACK:
1404                 res = P2P_SEND_ACTION_NO_ACK;
1405                 break;
1406         case OFFCHANNEL_SEND_ACTION_FAILED:
1407                 res = P2P_SEND_ACTION_FAILED;
1408                 break;
1409         }
1410
1411         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
1412
1413         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
1414             wpa_s->pending_pd_before_join &&
1415             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
1416              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
1417             wpa_s->p2p_fallback_to_go_neg) {
1418                 wpa_s->pending_pd_before_join = 0;
1419                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
1420                         "during p2p_connect-auto");
1421                 wpa_msg_global(wpa_s->parent, MSG_INFO,
1422                                P2P_EVENT_FALLBACK_TO_GO_NEG
1423                                "reason=no-ACK-to-PD-Req");
1424                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
1425                 return;
1426         }
1427 }
1428
1429
1430 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
1431 {
1432         struct wpa_supplicant *wpa_s = work->wpa_s;
1433         struct send_action_work *awork = work->ctx;
1434
1435         if (deinit) {
1436                 if (work->started) {
1437                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1438                                              wpa_s, NULL);
1439                         wpa_s->p2p_send_action_work = NULL;
1440                         offchannel_send_action_done(wpa_s);
1441                 }
1442                 os_free(awork);
1443                 return;
1444         }
1445
1446         if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1447                                    awork->bssid, awork->buf, awork->len,
1448                                    awork->wait_time,
1449                                    wpas_p2p_send_action_tx_status, 1) < 0) {
1450                 os_free(awork);
1451                 radio_work_done(work);
1452                 return;
1453         }
1454         wpa_s->p2p_send_action_work = work;
1455 }
1456
1457
1458 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1459                                  unsigned int freq, const u8 *dst,
1460                                  const u8 *src, const u8 *bssid, const u8 *buf,
1461                                  size_t len, unsigned int wait_time)
1462 {
1463         struct send_action_work *awork;
1464
1465         if (wpa_s->p2p_send_action_work) {
1466                 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1467                 return -1;
1468         }
1469
1470         awork = os_zalloc(sizeof(*awork) + len);
1471         if (awork == NULL)
1472                 return -1;
1473
1474         awork->freq = freq;
1475         os_memcpy(awork->dst, dst, ETH_ALEN);
1476         os_memcpy(awork->src, src, ETH_ALEN);
1477         os_memcpy(awork->bssid, bssid, ETH_ALEN);
1478         awork->len = len;
1479         awork->wait_time = wait_time;
1480         os_memcpy(awork->buf, buf, len);
1481
1482         if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
1483                            wpas_send_action_cb, awork) < 0) {
1484                 os_free(awork);
1485                 return -1;
1486         }
1487
1488         return 0;
1489 }
1490
1491
1492 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1493                             const u8 *src, const u8 *bssid, const u8 *buf,
1494                             size_t len, unsigned int wait_time)
1495 {
1496         struct wpa_supplicant *wpa_s = ctx;
1497         int listen_freq = -1, send_freq = -1;
1498
1499         if (wpa_s->p2p_listen_work)
1500                 listen_freq = wpa_s->p2p_listen_work->freq;
1501         if (wpa_s->p2p_send_action_work)
1502                 send_freq = wpa_s->p2p_send_action_work->freq;
1503         if (listen_freq != (int) freq && send_freq != (int) freq) {
1504                 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)",
1505                            listen_freq, send_freq);
1506                 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1507                                              len, wait_time);
1508         }
1509
1510         wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1511         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1512                                       wait_time,
1513                                       wpas_p2p_send_action_tx_status, 1);
1514 }
1515
1516
1517 static void wpas_send_action_done(void *ctx)
1518 {
1519         struct wpa_supplicant *wpa_s = ctx;
1520
1521         if (wpa_s->p2p_send_action_work) {
1522                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1523                                      wpa_s, NULL);
1524                 os_free(wpa_s->p2p_send_action_work->ctx);
1525                 radio_work_done(wpa_s->p2p_send_action_work);
1526                 wpa_s->p2p_send_action_work = NULL;
1527         }
1528
1529         offchannel_send_action_done(wpa_s);
1530 }
1531
1532
1533 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1534                                     struct p2p_go_neg_results *params)
1535 {
1536         if (wpa_s->go_params == NULL) {
1537                 wpa_s->go_params = os_malloc(sizeof(*params));
1538                 if (wpa_s->go_params == NULL)
1539                         return -1;
1540         }
1541         os_memcpy(wpa_s->go_params, params, sizeof(*params));
1542         return 0;
1543 }
1544
1545
1546 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1547                                     struct p2p_go_neg_results *res)
1548 {
1549         wpa_s->group_formation_reported = 0;
1550         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
1551                    " dev_addr " MACSTR " wps_method %d",
1552                    MAC2STR(res->peer_interface_addr),
1553                    MAC2STR(res->peer_device_addr), res->wps_method);
1554         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1555                           res->ssid, res->ssid_len);
1556         wpa_supplicant_ap_deinit(wpa_s);
1557         wpas_copy_go_neg_results(wpa_s, res);
1558         if (res->wps_method == WPS_PBC) {
1559                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
1560 #ifdef CONFIG_WPS_NFC
1561         } else if (res->wps_method == WPS_NFC) {
1562                 wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
1563                                    res->peer_interface_addr,
1564                                    wpa_s->parent->p2p_oob_dev_pw,
1565                                    wpa_s->parent->p2p_oob_dev_pw_id, 1,
1566                                    wpa_s->parent->p2p_oob_dev_pw_id ==
1567                                    DEV_PW_NFC_CONNECTION_HANDOVER ?
1568                                    wpa_s->parent->p2p_peer_oob_pubkey_hash :
1569                                    NULL,
1570                                    NULL, 0, 0);
1571 #endif /* CONFIG_WPS_NFC */
1572         } else {
1573                 u16 dev_pw_id = DEV_PW_DEFAULT;
1574                 if (wpa_s->p2p_wps_method == WPS_P2PS)
1575                         dev_pw_id = DEV_PW_P2PS_DEFAULT;
1576                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1577                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1578                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1579                                    wpa_s->p2p_pin, 1, dev_pw_id);
1580         }
1581 }
1582
1583
1584 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1585                                   struct wpa_ssid *ssid)
1586 {
1587         struct wpa_ssid *persistent;
1588         struct psk_list_entry *psk;
1589         struct hostapd_data *hapd;
1590
1591         if (!wpa_s->ap_iface)
1592                 return;
1593
1594         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
1595                                              ssid->ssid_len);
1596         if (persistent == NULL)
1597                 return;
1598
1599         hapd = wpa_s->ap_iface->bss[0];
1600
1601         dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1602                          list) {
1603                 struct hostapd_wpa_psk *hpsk;
1604
1605                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1606                         MACSTR " psk=%d",
1607                         MAC2STR(psk->addr), psk->p2p);
1608                 hpsk = os_zalloc(sizeof(*hpsk));
1609                 if (hpsk == NULL)
1610                         break;
1611                 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1612                 if (psk->p2p)
1613                         os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1614                 else
1615                         os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1616                 hpsk->next = hapd->conf->ssid.wpa_psk;
1617                 hapd->conf->ssid.wpa_psk = hpsk;
1618         }
1619 }
1620
1621
1622 static void p2p_go_dump_common_freqs(struct wpa_supplicant *wpa_s)
1623 {
1624         unsigned int i;
1625
1626         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Common group frequencies (len=%u):",
1627                 wpa_s->p2p_group_common_freqs_num);
1628
1629         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++)
1630                 wpa_dbg(wpa_s, MSG_DEBUG, "freq[%u]: %d",
1631                         i, wpa_s->p2p_group_common_freqs[i]);
1632 }
1633
1634
1635 static void p2p_go_save_group_common_freqs(struct wpa_supplicant *wpa_s,
1636                                            struct p2p_go_neg_results *params)
1637 {
1638         unsigned int i, len = int_array_len(wpa_s->go_params->freq_list);
1639
1640         wpa_s->p2p_group_common_freqs_num = 0;
1641         os_free(wpa_s->p2p_group_common_freqs);
1642         wpa_s->p2p_group_common_freqs = os_calloc(len, sizeof(int));
1643         if (!wpa_s->p2p_group_common_freqs)
1644                 return;
1645
1646         for (i = 0; i < len; i++) {
1647                 if (!wpa_s->go_params->freq_list[i])
1648                         break;
1649                 wpa_s->p2p_group_common_freqs[i] =
1650                         wpa_s->go_params->freq_list[i];
1651         }
1652         wpa_s->p2p_group_common_freqs_num = i;
1653 }
1654
1655
1656 static void p2p_config_write(struct wpa_supplicant *wpa_s)
1657 {
1658 #ifndef CONFIG_NO_CONFIG_WRITE
1659         if (wpa_s->parent->conf->update_config &&
1660             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
1661                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1662 #endif /* CONFIG_NO_CONFIG_WRITE */
1663 }
1664
1665
1666 static void p2p_go_configured(void *ctx, void *data)
1667 {
1668         struct wpa_supplicant *wpa_s = ctx;
1669         struct p2p_go_neg_results *params = data;
1670         struct wpa_ssid *ssid;
1671         int network_id = -1;
1672
1673         p2p_go_save_group_common_freqs(wpa_s, params);
1674         p2p_go_dump_common_freqs(wpa_s);
1675
1676         ssid = wpa_s->current_ssid;
1677         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1678                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1679                 if (wpa_s->global->p2p_group_formation == wpa_s)
1680                         wpa_s->global->p2p_group_formation = NULL;
1681                 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency,
1682                                        params->passphrase[0] == '\0' ?
1683                                        params->psk : NULL,
1684                                        params->passphrase,
1685                                        wpa_s->global->p2p_dev_addr,
1686                                        params->persistent_group, "");
1687                 wpa_s->group_formation_reported = 1;
1688
1689                 if (wpa_s->parent->p2ps_join_addr_valid) {
1690                         wpa_dbg(wpa_s, MSG_DEBUG,
1691                                 "P2PS: Setting default PIN for " MACSTR,
1692                                 MAC2STR(wpa_s->parent->p2ps_join_addr));
1693                         wpa_supplicant_ap_wps_pin(wpa_s,
1694                                                   wpa_s->parent->p2ps_join_addr,
1695                                                   "12345670", NULL, 0, 0);
1696                         wpa_s->parent->p2ps_join_addr_valid = 0;
1697                 }
1698
1699                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1700                 if (params->persistent_group) {
1701                         network_id = wpas_p2p_store_persistent_group(
1702                                 wpa_s->parent, ssid,
1703                                 wpa_s->global->p2p_dev_addr);
1704                         wpas_p2p_add_psk_list(wpa_s, ssid);
1705                 }
1706                 if (network_id < 0)
1707                         network_id = ssid->id;
1708                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1709                 wpas_p2p_cross_connect_setup(wpa_s);
1710                 wpas_p2p_set_group_idle_timeout(wpa_s);
1711
1712                 if (wpa_s->p2p_first_connection_timeout) {
1713                         wpa_dbg(wpa_s, MSG_DEBUG,
1714                                 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1715                                 wpa_s->p2p_first_connection_timeout);
1716                         wpa_s->p2p_go_group_formation_completed = 0;
1717                         wpa_s->global->p2p_group_formation = wpa_s;
1718                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1719                                              wpa_s->parent, NULL);
1720                         eloop_register_timeout(
1721                                 wpa_s->p2p_first_connection_timeout, 0,
1722                                 wpas_p2p_group_formation_timeout,
1723                                 wpa_s->parent, NULL);
1724                 }
1725
1726                 return;
1727         }
1728
1729         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1730         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1731                                               params->peer_interface_addr)) {
1732                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1733                            "filtering");
1734                 return;
1735         }
1736         if (params->wps_method == WPS_PBC) {
1737                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1738                                           params->peer_device_addr);
1739 #ifdef CONFIG_WPS_NFC
1740         } else if (params->wps_method == WPS_NFC) {
1741                 if (wpa_s->parent->p2p_oob_dev_pw_id !=
1742                     DEV_PW_NFC_CONNECTION_HANDOVER &&
1743                     !wpa_s->parent->p2p_oob_dev_pw) {
1744                         wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1745                         return;
1746                 }
1747                 wpas_ap_wps_add_nfc_pw(
1748                         wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
1749                         wpa_s->parent->p2p_oob_dev_pw,
1750                         wpa_s->parent->p2p_peer_oob_pk_hash_known ?
1751                         wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
1752 #endif /* CONFIG_WPS_NFC */
1753         } else if (wpa_s->p2p_pin[0])
1754                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1755                                           wpa_s->p2p_pin, NULL, 0, 0);
1756         os_free(wpa_s->go_params);
1757         wpa_s->go_params = NULL;
1758 }
1759
1760
1761 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1762                               struct p2p_go_neg_results *params,
1763                               int group_formation)
1764 {
1765         struct wpa_ssid *ssid;
1766
1767         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1768         if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1769                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1770                         "results");
1771                 return;
1772         }
1773
1774         ssid = wpa_config_add_network(wpa_s->conf);
1775         if (ssid == NULL) {
1776                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1777                 return;
1778         }
1779
1780         wpa_s->show_group_started = 0;
1781         wpa_s->p2p_go_group_formation_completed = 0;
1782         wpa_s->group_formation_reported = 0;
1783
1784         wpa_config_set_network_defaults(ssid);
1785         ssid->temporary = 1;
1786         ssid->p2p_group = 1;
1787         ssid->p2p_persistent_group = params->persistent_group;
1788         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1789                 WPAS_MODE_P2P_GO;
1790         ssid->frequency = params->freq;
1791         ssid->ht40 = params->ht40;
1792         ssid->vht = params->vht;
1793         ssid->ssid = os_zalloc(params->ssid_len + 1);
1794         if (ssid->ssid) {
1795                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1796                 ssid->ssid_len = params->ssid_len;
1797         }
1798         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1799         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1800         ssid->proto = WPA_PROTO_RSN;
1801         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1802         ssid->group_cipher = WPA_CIPHER_CCMP;
1803         if (params->freq > 56160) {
1804                 /*
1805                  * Enable GCMP instead of CCMP as pairwise_cipher and
1806                  * group_cipher in 60 GHz.
1807                  */
1808                 ssid->pairwise_cipher = WPA_CIPHER_GCMP;
1809                 ssid->group_cipher = WPA_CIPHER_GCMP;
1810         }
1811         if (os_strlen(params->passphrase) > 0) {
1812                 ssid->passphrase = os_strdup(params->passphrase);
1813                 if (ssid->passphrase == NULL) {
1814                         wpa_msg_global(wpa_s, MSG_ERROR,
1815                                        "P2P: Failed to copy passphrase for GO");
1816                         wpa_config_remove_network(wpa_s->conf, ssid->id);
1817                         return;
1818                 }
1819         } else
1820                 ssid->passphrase = NULL;
1821         ssid->psk_set = params->psk_set;
1822         if (ssid->psk_set)
1823                 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1824         else if (ssid->passphrase)
1825                 wpa_config_update_psk(ssid);
1826         ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
1827
1828         wpa_s->ap_configured_cb = p2p_go_configured;
1829         wpa_s->ap_configured_cb_ctx = wpa_s;
1830         wpa_s->ap_configured_cb_data = wpa_s->go_params;
1831         wpa_s->scan_req = NORMAL_SCAN_REQ;
1832         wpa_s->connect_without_scan = ssid;
1833         wpa_s->reassociate = 1;
1834         wpa_s->disconnected = 0;
1835         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1836                 "start GO)");
1837         wpa_supplicant_req_scan(wpa_s, 0, 0);
1838 }
1839
1840
1841 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1842                                   const struct wpa_supplicant *src)
1843 {
1844         struct wpa_config *d;
1845         const struct wpa_config *s;
1846
1847         d = dst->conf;
1848         s = src->conf;
1849
1850 #define C(n) if (s->n) d->n = os_strdup(s->n)
1851         C(device_name);
1852         C(manufacturer);
1853         C(model_name);
1854         C(model_number);
1855         C(serial_number);
1856         C(config_methods);
1857 #undef C
1858
1859         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1860         os_memcpy(d->sec_device_type, s->sec_device_type,
1861                   sizeof(d->sec_device_type));
1862         d->num_sec_device_types = s->num_sec_device_types;
1863
1864         d->p2p_group_idle = s->p2p_group_idle;
1865         d->p2p_intra_bss = s->p2p_intra_bss;
1866         d->persistent_reconnect = s->persistent_reconnect;
1867         d->max_num_sta = s->max_num_sta;
1868         d->pbc_in_m1 = s->pbc_in_m1;
1869         d->ignore_old_scan_res = s->ignore_old_scan_res;
1870         d->beacon_int = s->beacon_int;
1871         d->dtim_period = s->dtim_period;
1872         d->p2p_go_ctwindow = s->p2p_go_ctwindow;
1873         d->disassoc_low_ack = s->disassoc_low_ack;
1874         d->disable_scan_offload = s->disable_scan_offload;
1875         d->passive_scan = s->passive_scan;
1876
1877         if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey) {
1878                 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
1879                 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
1880         }
1881         d->p2p_cli_probe = s->p2p_cli_probe;
1882 }
1883
1884
1885 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
1886                                       char *ifname, size_t len)
1887 {
1888         char *ifname_ptr = wpa_s->ifname;
1889
1890         if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
1891                        os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
1892                 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
1893         }
1894
1895         os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
1896         if (os_strlen(ifname) >= IFNAMSIZ &&
1897             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
1898                 int res;
1899
1900                 /* Try to avoid going over the IFNAMSIZ length limit */
1901                 res = os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
1902                 if (os_snprintf_error(len, res) && len)
1903                         ifname[len - 1] = '\0';
1904         }
1905 }
1906
1907
1908 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
1909                                         enum wpa_driver_if_type type)
1910 {
1911         char ifname[120], force_ifname[120];
1912
1913         if (wpa_s->pending_interface_name[0]) {
1914                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
1915                            "- skip creation of a new one");
1916                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
1917                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
1918                                    "unknown?! ifname='%s'",
1919                                    wpa_s->pending_interface_name);
1920                         return -1;
1921                 }
1922                 return 0;
1923         }
1924
1925         wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
1926         force_ifname[0] = '\0';
1927
1928         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
1929                    ifname);
1930         wpa_s->p2p_group_idx++;
1931
1932         wpa_s->pending_interface_type = type;
1933         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
1934                            wpa_s->pending_interface_addr, NULL) < 0) {
1935                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
1936                            "interface");
1937                 return -1;
1938         }
1939
1940         if (force_ifname[0]) {
1941                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
1942                            force_ifname);
1943                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
1944                            sizeof(wpa_s->pending_interface_name));
1945         } else
1946                 os_strlcpy(wpa_s->pending_interface_name, ifname,
1947                            sizeof(wpa_s->pending_interface_name));
1948         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
1949                    MACSTR, wpa_s->pending_interface_name,
1950                    MAC2STR(wpa_s->pending_interface_addr));
1951
1952         return 0;
1953 }
1954
1955
1956 static void wpas_p2p_remove_pending_group_interface(
1957         struct wpa_supplicant *wpa_s)
1958 {
1959         if (!wpa_s->pending_interface_name[0] ||
1960             is_zero_ether_addr(wpa_s->pending_interface_addr))
1961                 return; /* No pending virtual interface */
1962
1963         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
1964                    wpa_s->pending_interface_name);
1965         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
1966                           wpa_s->pending_interface_name);
1967         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1968         wpa_s->pending_interface_name[0] = '\0';
1969         wpa_s->global->pending_group_iface_for_p2ps = 0;
1970 }
1971
1972
1973 static struct wpa_supplicant *
1974 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
1975 {
1976         struct wpa_interface iface;
1977         struct wpa_supplicant *group_wpa_s;
1978
1979         if (!wpa_s->pending_interface_name[0]) {
1980                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
1981                 if (!wpas_p2p_create_iface(wpa_s))
1982                         return NULL;
1983                 /*
1984                  * Something has forced us to remove the pending interface; try
1985                  * to create a new one and hope for the best that we will get
1986                  * the same local address.
1987                  */
1988                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
1989                                                  WPA_IF_P2P_CLIENT) < 0)
1990                         return NULL;
1991         }
1992
1993         os_memset(&iface, 0, sizeof(iface));
1994         iface.ifname = wpa_s->pending_interface_name;
1995         iface.driver = wpa_s->driver->name;
1996         if (wpa_s->conf->ctrl_interface == NULL &&
1997             wpa_s->parent != wpa_s &&
1998             wpa_s->p2p_mgmt &&
1999             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
2000                 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
2001         else
2002                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
2003         iface.driver_param = wpa_s->conf->driver_param;
2004         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
2005         if (group_wpa_s == NULL) {
2006                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
2007                            "wpa_supplicant interface");
2008                 return NULL;
2009         }
2010         wpa_s->pending_interface_name[0] = '\0';
2011         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
2012                 P2P_GROUP_INTERFACE_CLIENT;
2013         wpa_s->global->p2p_group_formation = group_wpa_s;
2014         wpa_s->global->pending_group_iface_for_p2ps = 0;
2015
2016         wpas_p2p_clone_config(group_wpa_s, wpa_s);
2017
2018         return group_wpa_s;
2019 }
2020
2021
2022 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
2023                                              void *timeout_ctx)
2024 {
2025         struct wpa_supplicant *wpa_s = eloop_ctx;
2026         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
2027         wpas_p2p_group_formation_failed(wpa_s, 0);
2028 }
2029
2030
2031 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
2032                                             int already_deleted)
2033 {
2034         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2035                              wpa_s->parent, NULL);
2036         if (wpa_s->global->p2p)
2037                 p2p_group_formation_failed(wpa_s->global->p2p);
2038         wpas_group_formation_completed(wpa_s, 0, already_deleted);
2039 }
2040
2041
2042 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
2043 {
2044         wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
2045         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2046                              wpa_s->parent, NULL);
2047         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2048                                wpa_s->parent, NULL);
2049         wpa_s->global->p2p_fail_on_wps_complete = 0;
2050 }
2051
2052
2053 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
2054 {
2055         if (wpa_s->global->p2p_group_formation != wpa_s)
2056                 return;
2057         /* Speed up group formation timeout since this cannot succeed */
2058         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2059                              wpa_s->parent, NULL);
2060         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2061                                wpa_s->parent, NULL);
2062 }
2063
2064
2065 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
2066 {
2067         struct wpa_supplicant *wpa_s = ctx;
2068
2069         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2070                 wpa_drv_cancel_remain_on_channel(wpa_s);
2071                 wpa_s->off_channel_freq = 0;
2072                 wpa_s->roc_waiting_drv_freq = 0;
2073         }
2074
2075         if (res->status) {
2076                 wpa_msg_global(wpa_s, MSG_INFO,
2077                                P2P_EVENT_GO_NEG_FAILURE "status=%d",
2078                                res->status);
2079                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
2080                 wpas_p2p_remove_pending_group_interface(wpa_s);
2081                 return;
2082         }
2083
2084         if (!res->role_go) {
2085                 /* Inform driver of the operating channel of GO. */
2086                 wpa_drv_set_prob_oper_freq(wpa_s, res->freq);
2087         }
2088
2089         if (wpa_s->p2p_go_ht40)
2090                 res->ht40 = 1;
2091         if (wpa_s->p2p_go_vht)
2092                 res->vht = 1;
2093
2094         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
2095                        "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
2096                        " wps_method=%s",
2097                        res->role_go ? "GO" : "client", res->freq, res->ht40,
2098                        MAC2STR(res->peer_device_addr),
2099                        MAC2STR(res->peer_interface_addr),
2100                        p2p_wps_method_text(res->wps_method));
2101         wpas_notify_p2p_go_neg_completed(wpa_s, res);
2102
2103         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
2104                 struct wpa_ssid *ssid;
2105                 ssid = wpa_config_get_network(wpa_s->conf,
2106                                               wpa_s->p2p_persistent_id);
2107                 if (ssid && ssid->disabled == 2 &&
2108                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
2109                         size_t len = os_strlen(ssid->passphrase);
2110                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
2111                                    "on requested persistent group");
2112                         os_memcpy(res->passphrase, ssid->passphrase, len);
2113                         res->passphrase[len] = '\0';
2114                 }
2115         }
2116
2117         if (wpa_s->create_p2p_iface) {
2118                 struct wpa_supplicant *group_wpa_s =
2119                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
2120                 if (group_wpa_s == NULL) {
2121                         wpas_p2p_remove_pending_group_interface(wpa_s);
2122                         eloop_cancel_timeout(wpas_p2p_long_listen_timeout,
2123                                              wpa_s, NULL);
2124                         wpas_p2p_group_formation_failed(wpa_s, 1);
2125                         return;
2126                 }
2127                 if (group_wpa_s != wpa_s) {
2128                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
2129                                   sizeof(group_wpa_s->p2p_pin));
2130                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
2131                 }
2132                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2133                 wpa_s->pending_interface_name[0] = '\0';
2134                 group_wpa_s->p2p_in_provisioning = 1;
2135
2136                 if (res->role_go)
2137                         wpas_start_wps_go(group_wpa_s, res, 1);
2138                 else
2139                         wpas_start_wps_enrollee(group_wpa_s, res);
2140         } else {
2141                 wpa_s->p2p_in_provisioning = 1;
2142                 wpa_s->global->p2p_group_formation = wpa_s;
2143
2144                 if (res->role_go)
2145                         wpas_start_wps_go(wpa_s, res, 1);
2146                 else
2147                         wpas_start_wps_enrollee(ctx, res);
2148         }
2149
2150         wpa_s->p2p_long_listen = 0;
2151         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2152
2153         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2154         eloop_register_timeout(15 + res->peer_config_timeout / 100,
2155                                (res->peer_config_timeout % 100) * 10000,
2156                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
2157 }
2158
2159
2160 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id,
2161                                u8 go_intent)
2162 {
2163         struct wpa_supplicant *wpa_s = ctx;
2164         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
2165                        " dev_passwd_id=%u go_intent=%u", MAC2STR(src),
2166                        dev_passwd_id, go_intent);
2167
2168         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id, go_intent);
2169 }
2170
2171
2172 static void wpas_dev_found(void *ctx, const u8 *addr,
2173                            const struct p2p_peer_info *info,
2174                            int new_device)
2175 {
2176 #ifndef CONFIG_NO_STDOUT_DEBUG
2177         struct wpa_supplicant *wpa_s = ctx;
2178         char devtype[WPS_DEV_TYPE_BUFSIZE];
2179         char *wfd_dev_info_hex = NULL;
2180
2181 #ifdef CONFIG_WIFI_DISPLAY
2182         wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
2183                                                     WFD_SUBELEM_DEVICE_INFO);
2184 #endif /* CONFIG_WIFI_DISPLAY */
2185
2186         if (info->p2ps_instance) {
2187                 char str[256];
2188                 const u8 *buf = wpabuf_head(info->p2ps_instance);
2189                 size_t len = wpabuf_len(info->p2ps_instance);
2190
2191                 while (len) {
2192                         u32 id;
2193                         u16 methods;
2194                         u8 str_len;
2195
2196                         if (len < 4 + 2 + 1)
2197                                 break;
2198                         id = WPA_GET_LE32(buf);
2199                         buf += sizeof(u32);
2200                         methods = WPA_GET_BE16(buf);
2201                         buf += sizeof(u16);
2202                         str_len = *buf++;
2203                         if (str_len > len - 4 - 2 - 1)
2204                                 break;
2205                         os_memcpy(str, buf, str_len);
2206                         str[str_len] = '\0';
2207                         buf += str_len;
2208                         len -= str_len + sizeof(u32) + sizeof(u16) + sizeof(u8);
2209
2210                         wpa_msg_global(wpa_s, MSG_INFO,
2211                                        P2P_EVENT_DEVICE_FOUND MACSTR
2212                                        " p2p_dev_addr=" MACSTR
2213                                        " pri_dev_type=%s name='%s'"
2214                                        " config_methods=0x%x"
2215                                        " dev_capab=0x%x"
2216                                        " group_capab=0x%x"
2217                                        " adv_id=%x asp_svc=%s%s",
2218                                        MAC2STR(addr),
2219                                        MAC2STR(info->p2p_device_addr),
2220                                        wps_dev_type_bin2str(
2221                                                info->pri_dev_type,
2222                                                devtype, sizeof(devtype)),
2223                                        info->device_name, methods,
2224                                        info->dev_capab, info->group_capab,
2225                                        id, str,
2226                                        info->vendor_elems ?
2227                                        " vendor_elems=1" : "");
2228                 }
2229                 goto done;
2230         }
2231
2232         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
2233                        " p2p_dev_addr=" MACSTR
2234                        " pri_dev_type=%s name='%s' config_methods=0x%x "
2235                        "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d",
2236                        MAC2STR(addr), MAC2STR(info->p2p_device_addr),
2237                        wps_dev_type_bin2str(info->pri_dev_type, devtype,
2238                                             sizeof(devtype)),
2239                        info->device_name, info->config_methods,
2240                        info->dev_capab, info->group_capab,
2241                        wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
2242                        wfd_dev_info_hex ? wfd_dev_info_hex : "",
2243                        info->vendor_elems ? " vendor_elems=1" : "",
2244                        new_device);
2245
2246 done:
2247         os_free(wfd_dev_info_hex);
2248 #endif /* CONFIG_NO_STDOUT_DEBUG */
2249
2250         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
2251 }
2252
2253
2254 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
2255 {
2256         struct wpa_supplicant *wpa_s = ctx;
2257
2258         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
2259                        "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
2260
2261         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
2262 }
2263
2264
2265 static void wpas_find_stopped(void *ctx)
2266 {
2267         struct wpa_supplicant *wpa_s = ctx;
2268         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
2269         wpas_notify_p2p_find_stopped(wpa_s);
2270 }
2271
2272
2273 struct wpas_p2p_listen_work {
2274         unsigned int freq;
2275         unsigned int duration;
2276         struct wpabuf *probe_resp_ie;
2277 };
2278
2279
2280 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
2281 {
2282         if (lwork == NULL)
2283                 return;
2284         wpabuf_free(lwork->probe_resp_ie);
2285         os_free(lwork);
2286 }
2287
2288
2289 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
2290 {
2291         struct wpas_p2p_listen_work *lwork;
2292
2293         if (!wpa_s->p2p_listen_work)
2294                 return;
2295
2296         lwork = wpa_s->p2p_listen_work->ctx;
2297         wpas_p2p_listen_work_free(lwork);
2298         radio_work_done(wpa_s->p2p_listen_work);
2299         wpa_s->p2p_listen_work = NULL;
2300 }
2301
2302
2303 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
2304 {
2305         struct wpa_supplicant *wpa_s = work->wpa_s;
2306         struct wpas_p2p_listen_work *lwork = work->ctx;
2307         unsigned int duration;
2308
2309         if (deinit) {
2310                 if (work->started) {
2311                         wpa_s->p2p_listen_work = NULL;
2312                         wpas_stop_listen(wpa_s);
2313                 }
2314                 wpas_p2p_listen_work_free(lwork);
2315                 return;
2316         }
2317
2318         wpa_s->p2p_listen_work = work;
2319
2320         wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
2321
2322         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
2323                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
2324                            "report received Probe Request frames");
2325                 wpas_p2p_listen_work_done(wpa_s);
2326                 return;
2327         }
2328
2329         wpa_s->pending_listen_freq = lwork->freq;
2330         wpa_s->pending_listen_duration = lwork->duration;
2331
2332         duration = lwork->duration;
2333 #ifdef CONFIG_TESTING_OPTIONS
2334         if (wpa_s->extra_roc_dur) {
2335                 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u",
2336                            duration, duration + wpa_s->extra_roc_dur);
2337                 duration += wpa_s->extra_roc_dur;
2338         }
2339 #endif /* CONFIG_TESTING_OPTIONS */
2340
2341         if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) {
2342                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
2343                            "to remain on channel (%u MHz) for Listen "
2344                            "state", lwork->freq);
2345                 wpas_p2p_listen_work_done(wpa_s);
2346                 wpa_s->pending_listen_freq = 0;
2347                 return;
2348         }
2349         wpa_s->off_channel_freq = 0;
2350         wpa_s->roc_waiting_drv_freq = lwork->freq;
2351 }
2352
2353
2354 static int wpas_start_listen(void *ctx, unsigned int freq,
2355                              unsigned int duration,
2356                              const struct wpabuf *probe_resp_ie)
2357 {
2358         struct wpa_supplicant *wpa_s = ctx;
2359         struct wpas_p2p_listen_work *lwork;
2360
2361         if (wpa_s->p2p_listen_work) {
2362                 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
2363                 return -1;
2364         }
2365
2366         lwork = os_zalloc(sizeof(*lwork));
2367         if (lwork == NULL)
2368                 return -1;
2369         lwork->freq = freq;
2370         lwork->duration = duration;
2371         if (probe_resp_ie) {
2372                 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
2373                 if (lwork->probe_resp_ie == NULL) {
2374                         wpas_p2p_listen_work_free(lwork);
2375                         return -1;
2376                 }
2377         }
2378
2379         if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
2380                            lwork) < 0) {
2381                 wpas_p2p_listen_work_free(lwork);
2382                 return -1;
2383         }
2384
2385         return 0;
2386 }
2387
2388
2389 static void wpas_stop_listen(void *ctx)
2390 {
2391         struct wpa_supplicant *wpa_s = ctx;
2392         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2393                 wpa_drv_cancel_remain_on_channel(wpa_s);
2394                 wpa_s->off_channel_freq = 0;
2395                 wpa_s->roc_waiting_drv_freq = 0;
2396         }
2397         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
2398
2399         /*
2400          * Don't cancel Probe Request RX reporting for a connected P2P Client
2401          * handling Probe Request frames.
2402          */
2403         if (!wpa_s->p2p_cli_probe)
2404                 wpa_drv_probe_req_report(wpa_s, 0);
2405
2406         wpas_p2p_listen_work_done(wpa_s);
2407 }
2408
2409
2410 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf,
2411                                 unsigned int freq)
2412 {
2413         struct wpa_supplicant *wpa_s = ctx;
2414         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1,
2415                                  freq);
2416 }
2417
2418
2419 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2420                                          const u8 *peer, const char *params,
2421                                          unsigned int generated_pin)
2422 {
2423         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2424                        " %08d%s", MAC2STR(peer), generated_pin, params);
2425 }
2426
2427
2428 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2429                                         const u8 *peer, const char *params)
2430 {
2431         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2432                        "%s", MAC2STR(peer), params);
2433 }
2434
2435
2436 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2437                                const u8 *dev_addr, const u8 *pri_dev_type,
2438                                const char *dev_name, u16 supp_config_methods,
2439                                u8 dev_capab, u8 group_capab, const u8 *group_id,
2440                                size_t group_id_len)
2441 {
2442         struct wpa_supplicant *wpa_s = ctx;
2443         char devtype[WPS_DEV_TYPE_BUFSIZE];
2444         char params[300];
2445         u8 empty_dev_type[8];
2446         unsigned int generated_pin = 0;
2447         struct wpa_supplicant *group = NULL;
2448         int res;
2449
2450         if (group_id) {
2451                 for (group = wpa_s->global->ifaces; group; group = group->next)
2452                 {
2453                         struct wpa_ssid *s = group->current_ssid;
2454                         if (s != NULL &&
2455                             s->mode == WPAS_MODE_P2P_GO &&
2456                             group_id_len - ETH_ALEN == s->ssid_len &&
2457                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2458                                       s->ssid_len) == 0)
2459                                 break;
2460                 }
2461         }
2462
2463         if (pri_dev_type == NULL) {
2464                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2465                 pri_dev_type = empty_dev_type;
2466         }
2467         res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2468                           " pri_dev_type=%s name='%s' config_methods=0x%x "
2469                           "dev_capab=0x%x group_capab=0x%x%s%s",
2470                           MAC2STR(dev_addr),
2471                           wps_dev_type_bin2str(pri_dev_type, devtype,
2472                                                sizeof(devtype)),
2473                           dev_name, supp_config_methods, dev_capab, group_capab,
2474                           group ? " group=" : "",
2475                           group ? group->ifname : "");
2476         if (os_snprintf_error(sizeof(params), res))
2477                 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated");
2478         params[sizeof(params) - 1] = '\0';
2479
2480         if (config_methods & WPS_CONFIG_DISPLAY) {
2481                 generated_pin = wps_generate_pin();
2482                 wpas_prov_disc_local_display(wpa_s, peer, params,
2483                                              generated_pin);
2484         } else if (config_methods & WPS_CONFIG_KEYPAD)
2485                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2486         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2487                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2488                                MACSTR "%s", MAC2STR(peer), params);
2489
2490         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2491                                             P2P_PROV_DISC_SUCCESS,
2492                                             config_methods, generated_pin);
2493 }
2494
2495
2496 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2497 {
2498         struct wpa_supplicant *wpa_s = ctx;
2499         unsigned int generated_pin = 0;
2500         char params[20];
2501
2502         if (wpa_s->pending_pd_before_join &&
2503             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2504              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2505                 wpa_s->pending_pd_before_join = 0;
2506                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2507                            "join-existing-group operation");
2508                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2509                 return;
2510         }
2511
2512         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2513             wpa_s->pending_pd_use == AUTO_PD_GO_NEG) {
2514                 int res;
2515
2516                 res = os_snprintf(params, sizeof(params), " peer_go=%d",
2517                                   wpa_s->pending_pd_use == AUTO_PD_JOIN);
2518                 if (os_snprintf_error(sizeof(params), res))
2519                         params[sizeof(params) - 1] = '\0';
2520         } else
2521                 params[0] = '\0';
2522
2523         if (config_methods & WPS_CONFIG_DISPLAY)
2524                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2525         else if (config_methods & WPS_CONFIG_KEYPAD) {
2526                 generated_pin = wps_generate_pin();
2527                 wpas_prov_disc_local_display(wpa_s, peer, params,
2528                                              generated_pin);
2529         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2530                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2531                                MACSTR "%s", MAC2STR(peer), params);
2532
2533         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2534                                             P2P_PROV_DISC_SUCCESS,
2535                                             config_methods, generated_pin);
2536 }
2537
2538
2539 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2540                                 enum p2p_prov_disc_status status,
2541                                 u32 adv_id, const u8 *adv_mac,
2542                                 const char *deferred_session_resp)
2543 {
2544         struct wpa_supplicant *wpa_s = ctx;
2545
2546         if (wpa_s->p2p_fallback_to_go_neg) {
2547                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2548                         "failed - fall back to GO Negotiation");
2549                 wpa_msg_global(wpa_s->parent, MSG_INFO,
2550                                P2P_EVENT_FALLBACK_TO_GO_NEG
2551                                "reason=PD-failed");
2552                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2553                 return;
2554         }
2555
2556         if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2557                 wpa_s->pending_pd_before_join = 0;
2558                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2559                            "join-existing-group operation (no ACK for PD "
2560                            "Req attempts)");
2561                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2562                 return;
2563         }
2564
2565         if (adv_id && adv_mac && deferred_session_resp) {
2566                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2567                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x"
2568                                " deferred_session_resp='%s'",
2569                                MAC2STR(peer), status, adv_id,
2570                                deferred_session_resp);
2571         } else if (adv_id && adv_mac) {
2572                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2573                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x",
2574                                MAC2STR(peer), status, adv_id);
2575         } else {
2576                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2577                                " p2p_dev_addr=" MACSTR " status=%d",
2578                                MAC2STR(peer), status);
2579         }
2580
2581         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2582                                             status, 0, 0);
2583 }
2584
2585
2586 static int freq_included(const struct p2p_channels *channels, unsigned int freq)
2587 {
2588         if (channels == NULL)
2589                 return 1; /* Assume no restrictions */
2590         return p2p_channels_includes_freq(channels, freq);
2591
2592 }
2593
2594
2595 /**
2596  * Pick the best frequency to use from all the currently used frequencies.
2597  */
2598 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s,
2599                                         struct wpa_used_freq_data *freqs,
2600                                         unsigned int num)
2601 {
2602         unsigned int i, c;
2603
2604         /* find a candidate freq that is supported by P2P */
2605         for (c = 0; c < num; c++)
2606                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq))
2607                         break;
2608
2609         if (c == num)
2610                 return 0;
2611
2612         /* once we have a candidate, try to find a 'better' one */
2613         for (i = c + 1; i < num; i++) {
2614                 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
2615                         continue;
2616
2617                 /*
2618                  * 1. Infrastructure station interfaces have higher preference.
2619                  * 2. P2P Clients have higher preference.
2620                  * 3. All others.
2621                  */
2622                 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) {
2623                         c = i;
2624                         break;
2625                 }
2626
2627                 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT))
2628                         c = i;
2629         }
2630         return freqs[c].freq;
2631 }
2632
2633
2634 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2635                                   const u8 *go_dev_addr, const u8 *ssid,
2636                                   size_t ssid_len, int *go, u8 *group_bssid,
2637                                   int *force_freq, int persistent_group,
2638                                   const struct p2p_channels *channels,
2639                                   int dev_pw_id)
2640 {
2641         struct wpa_supplicant *wpa_s = ctx;
2642         struct wpa_ssid *s;
2643         struct wpa_used_freq_data *freqs;
2644         struct wpa_supplicant *grp;
2645         int best_freq;
2646
2647         if (!persistent_group) {
2648                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2649                            " to join an active group (SSID: %s)",
2650                            MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2651                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2652                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2653                      == 0 ||
2654                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2655                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2656                                    "authorized invitation");
2657                         goto accept_inv;
2658                 }
2659
2660 #ifdef CONFIG_WPS_NFC
2661                 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled &&
2662                     dev_pw_id == wpa_s->p2p_oob_dev_pw_id) {
2663                         wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
2664                         wpa_s->p2p_wps_method = WPS_NFC;
2665                         wpa_s->pending_join_wps_method = WPS_NFC;
2666                         os_memcpy(wpa_s->pending_join_dev_addr,
2667                                   go_dev_addr, ETH_ALEN);
2668                         os_memcpy(wpa_s->pending_join_iface_addr,
2669                                   bssid, ETH_ALEN);
2670                         goto accept_inv;
2671                 }
2672 #endif /* CONFIG_WPS_NFC */
2673
2674                 /*
2675                  * Do not accept the invitation automatically; notify user and
2676                  * request approval.
2677                  */
2678                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2679         }
2680
2681         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2682         if (grp) {
2683                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2684                            "running persistent group");
2685                 if (*go)
2686                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2687                 goto accept_inv;
2688         }
2689
2690         if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2691             os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2692                 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2693                            "invitation to re-invoke a persistent group");
2694                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
2695         } else if (!wpa_s->conf->persistent_reconnect)
2696                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2697
2698         for (s = wpa_s->conf->ssid; s; s = s->next) {
2699                 if (s->disabled == 2 &&
2700                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2701                     s->ssid_len == ssid_len &&
2702                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2703                         break;
2704         }
2705
2706         if (!s) {
2707                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2708                            " requested reinvocation of an unknown group",
2709                            MAC2STR(sa));
2710                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2711         }
2712
2713         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2714                 *go = 1;
2715                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2716                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2717                                    "interface is already in use - reject "
2718                                    "invitation");
2719                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2720                 }
2721                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2722         } else if (s->mode == WPAS_MODE_P2P_GO) {
2723                 *go = 1;
2724                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2725                 {
2726                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2727                                    "interface address for the group");
2728                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2729                 }
2730                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2731                           ETH_ALEN);
2732         }
2733
2734 accept_inv:
2735         wpas_p2p_set_own_freq_preference(wpa_s, 0);
2736
2737         best_freq = 0;
2738         freqs = os_calloc(wpa_s->num_multichan_concurrent,
2739                           sizeof(struct wpa_used_freq_data));
2740         if (freqs) {
2741                 int num_channels = wpa_s->num_multichan_concurrent;
2742                 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels);
2743                 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
2744                 os_free(freqs);
2745         }
2746
2747         /* Get one of the frequencies currently in use */
2748         if (best_freq > 0) {
2749                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
2750                 wpas_p2p_set_own_freq_preference(wpa_s, best_freq);
2751
2752                 if (wpa_s->num_multichan_concurrent < 2 ||
2753                     wpas_p2p_num_unused_channels(wpa_s) < 1) {
2754                         wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
2755                         *force_freq = best_freq;
2756                 }
2757         }
2758
2759         if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
2760             wpas_p2p_num_unused_channels(wpa_s) > 0) {
2761                 if (*go == 0) {
2762                         /* We are the client */
2763                         wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
2764                                    "running a GO but we are capable of MCC, "
2765                                    "figure out the best channel to use");
2766                         *force_freq = 0;
2767                 } else if (!freq_included(channels, *force_freq)) {
2768                         /* We are the GO, and *force_freq is not in the
2769                          * intersection */
2770                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
2771                                    "in intersection but we are capable of MCC, "
2772                                    "figure out the best channel to use",
2773                                    *force_freq);
2774                         *force_freq = 0;
2775                 }
2776         }
2777
2778         return P2P_SC_SUCCESS;
2779 }
2780
2781
2782 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
2783                                      const u8 *ssid, size_t ssid_len,
2784                                      const u8 *go_dev_addr, u8 status,
2785                                      int op_freq)
2786 {
2787         struct wpa_supplicant *wpa_s = ctx;
2788         struct wpa_ssid *s;
2789
2790         for (s = wpa_s->conf->ssid; s; s = s->next) {
2791                 if (s->disabled == 2 &&
2792                     s->ssid_len == ssid_len &&
2793                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2794                         break;
2795         }
2796
2797         if (status == P2P_SC_SUCCESS) {
2798                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2799                            " was accepted; op_freq=%d MHz, SSID=%s",
2800                            MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
2801                 if (s) {
2802                         int go = s->mode == WPAS_MODE_P2P_GO;
2803                         wpas_p2p_group_add_persistent(
2804                                 wpa_s, s, go, 0, op_freq, 0, 0, NULL,
2805                                 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0);
2806                 } else if (bssid) {
2807                         wpa_s->user_initiated_pd = 0;
2808                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
2809                                       wpa_s->p2p_wps_method, 0, op_freq,
2810                                       ssid, ssid_len);
2811                 }
2812                 return;
2813         }
2814
2815         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
2816                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2817                            " was rejected (status %u)", MAC2STR(sa), status);
2818                 return;
2819         }
2820
2821         if (!s) {
2822                 if (bssid) {
2823                         wpa_msg_global(wpa_s, MSG_INFO,
2824                                        P2P_EVENT_INVITATION_RECEIVED
2825                                        "sa=" MACSTR " go_dev_addr=" MACSTR
2826                                        " bssid=" MACSTR " unknown-network",
2827                                        MAC2STR(sa), MAC2STR(go_dev_addr),
2828                                        MAC2STR(bssid));
2829                 } else {
2830                         wpa_msg_global(wpa_s, MSG_INFO,
2831                                        P2P_EVENT_INVITATION_RECEIVED
2832                                        "sa=" MACSTR " go_dev_addr=" MACSTR
2833                                        " unknown-network",
2834                                        MAC2STR(sa), MAC2STR(go_dev_addr));
2835                 }
2836                 return;
2837         }
2838
2839         if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
2840                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2841                                "sa=" MACSTR " persistent=%d freq=%d",
2842                                MAC2STR(sa), s->id, op_freq);
2843         } else {
2844                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2845                                "sa=" MACSTR " persistent=%d",
2846                                MAC2STR(sa), s->id);
2847         }
2848 }
2849
2850
2851 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
2852                                         struct wpa_ssid *ssid,
2853                                         const u8 *peer, int inv)
2854 {
2855         size_t i;
2856         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
2857
2858         if (ssid == NULL)
2859                 return;
2860
2861         for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
2862                 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer,
2863                               ETH_ALEN) == 0)
2864                         break;
2865         }
2866         if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) {
2867                 if (ssid->mode != WPAS_MODE_P2P_GO &&
2868                     os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
2869                         wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
2870                                    "due to invitation result", ssid->id);
2871                         wpas_notify_network_removed(wpa_s, ssid);
2872                         wpa_config_remove_network(wpa_s->conf, ssid->id);
2873                         return;
2874                 }
2875                 return; /* Peer not found in client list */
2876         }
2877
2878         wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
2879                    "group %d client list%s",
2880                    MAC2STR(peer), ssid->id,
2881                    inv ? " due to invitation result" : "");
2882         os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN,
2883                    ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
2884                    (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
2885         ssid->num_p2p_clients--;
2886         if (p2p_wpa_s->conf->update_config &&
2887             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
2888                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
2889 }
2890
2891
2892 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
2893                                           const u8 *peer)
2894 {
2895         struct wpa_ssid *ssid;
2896
2897         wpa_s = wpa_s->global->p2p_invite_group;
2898         if (wpa_s == NULL)
2899                 return; /* No known invitation group */
2900         ssid = wpa_s->current_ssid;
2901         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
2902             !ssid->p2p_persistent_group)
2903                 return; /* Not operating as a GO in persistent group */
2904         ssid = wpas_p2p_get_persistent(wpa_s->parent, peer,
2905                                        ssid->ssid, ssid->ssid_len);
2906         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
2907 }
2908
2909
2910 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
2911                                    const struct p2p_channels *channels,
2912                                    const u8 *peer, int neg_freq,
2913                                    int peer_oper_freq)
2914 {
2915         struct wpa_supplicant *wpa_s = ctx;
2916         struct wpa_ssid *ssid;
2917         int freq;
2918
2919         if (bssid) {
2920                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2921                                "status=%d " MACSTR,
2922                                status, MAC2STR(bssid));
2923         } else {
2924                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2925                                "status=%d ", status);
2926         }
2927         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
2928
2929         wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
2930                    status, MAC2STR(peer));
2931         if (wpa_s->pending_invite_ssid_id == -1) {
2932                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
2933                         wpas_remove_persistent_client(wpa_s, peer);
2934                 return; /* Invitation to active group */
2935         }
2936
2937         if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
2938                 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
2939                            "invitation exchange to indicate readiness for "
2940                            "re-invocation");
2941         }
2942
2943         if (status != P2P_SC_SUCCESS) {
2944                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
2945                         ssid = wpa_config_get_network(
2946                                 wpa_s->conf, wpa_s->pending_invite_ssid_id);
2947                         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
2948                 }
2949                 wpas_p2p_remove_pending_group_interface(wpa_s);
2950                 return;
2951         }
2952
2953         ssid = wpa_config_get_network(wpa_s->conf,
2954                                       wpa_s->pending_invite_ssid_id);
2955         if (ssid == NULL) {
2956                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
2957                            "data matching with invitation");
2958                 return;
2959         }
2960
2961         /*
2962          * The peer could have missed our ctrl::ack frame for Invitation
2963          * Response and continue retransmitting the frame. To reduce the
2964          * likelihood of the peer not getting successful TX status for the
2965          * Invitation Response frame, wait a short time here before starting
2966          * the persistent group so that we will remain on the current channel to
2967          * acknowledge any possible retransmission from the peer.
2968          */
2969         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
2970                 "starting persistent group");
2971         os_sleep(0, 50000);
2972
2973         if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
2974             freq_included(channels, neg_freq))
2975                 freq = neg_freq;
2976         else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
2977                  freq_included(channels, peer_oper_freq))
2978                 freq = peer_oper_freq;
2979         else
2980                 freq = 0;
2981
2982         wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
2983                    freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
2984         wpas_p2p_group_add_persistent(wpa_s, ssid,
2985                                       ssid->mode == WPAS_MODE_P2P_GO,
2986                                       wpa_s->p2p_persistent_go_freq,
2987                                       freq,
2988                                       wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
2989                                       channels,
2990                                       ssid->mode == WPAS_MODE_P2P_GO ?
2991                                       P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
2992                                       0);
2993 }
2994
2995
2996 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
2997                                     unsigned int freq)
2998 {
2999         if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
3000                 return 1;
3001         return freq_range_list_includes(&global->p2p_disallow_freq, freq);
3002 }
3003
3004
3005 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
3006 {
3007         reg->channel[reg->channels] = chan;
3008         reg->channels++;
3009 }
3010
3011
3012 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3013                                      struct p2p_channels *chan,
3014                                      struct p2p_channels *cli_chan)
3015 {
3016         int i, cla = 0;
3017
3018         wpa_s->global->p2p_24ghz_social_channels = 1;
3019
3020         os_memset(cli_chan, 0, sizeof(*cli_chan));
3021
3022         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3023                    "band");
3024
3025         /* Operating class 81 - 2.4 GHz band channels 1..13 */
3026         chan->reg_class[cla].reg_class = 81;
3027         chan->reg_class[cla].channels = 0;
3028         for (i = 0; i < 11; i++) {
3029                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3030                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3031         }
3032         if (chan->reg_class[cla].channels)
3033                 cla++;
3034
3035         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3036                    "band");
3037
3038         /* Operating class 115 - 5 GHz, channels 36-48 */
3039         chan->reg_class[cla].reg_class = 115;
3040         chan->reg_class[cla].channels = 0;
3041         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3042                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3043         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3044                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3045         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3046                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3047         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3048                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3049         if (chan->reg_class[cla].channels)
3050                 cla++;
3051
3052         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3053                    "band");
3054
3055         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3056         chan->reg_class[cla].reg_class = 124;
3057         chan->reg_class[cla].channels = 0;
3058         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3059                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3060         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3061                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3062         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3063                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3064         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3065                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3066         if (chan->reg_class[cla].channels)
3067                 cla++;
3068
3069         chan->reg_classes = cla;
3070         return 0;
3071 }
3072
3073
3074 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
3075                                           u16 num_modes,
3076                                           enum hostapd_hw_mode mode)
3077 {
3078         u16 i;
3079
3080         for (i = 0; i < num_modes; i++) {
3081                 if (modes[i].mode == mode)
3082                         return &modes[i];
3083         }
3084
3085         return NULL;
3086 }
3087
3088
3089 enum chan_allowed {
3090         NOT_ALLOWED, NO_IR, ALLOWED
3091 };
3092
3093 static int has_channel(struct wpa_global *global,
3094                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
3095 {
3096         int i;
3097         unsigned int freq;
3098
3099         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3100                 chan * 5;
3101         if (wpas_p2p_disallowed_freq(global, freq))
3102                 return NOT_ALLOWED;
3103
3104         for (i = 0; i < mode->num_channels; i++) {
3105                 if (mode->channels[i].chan == chan) {
3106                         if (flags)
3107                                 *flags = mode->channels[i].flag;
3108                         if (mode->channels[i].flag &
3109                             (HOSTAPD_CHAN_DISABLED |
3110                              HOSTAPD_CHAN_RADAR))
3111                                 return NOT_ALLOWED;
3112                         if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR)
3113                                 return NO_IR;
3114                         return ALLOWED;
3115                 }
3116         }
3117
3118         return NOT_ALLOWED;
3119 }
3120
3121
3122 struct p2p_oper_class_map {
3123         enum hostapd_hw_mode mode;
3124         u8 op_class;
3125         u8 min_chan;
3126         u8 max_chan;
3127         u8 inc;
3128         enum { BW20, BW40PLUS, BW40MINUS, BW80, BW2160 } bw;
3129 };
3130
3131 static const struct p2p_oper_class_map op_class[] = {
3132         { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
3133 #if 0 /* Do not enable HT40 on 2 GHz for now */
3134         { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
3135         { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
3136 #endif
3137         { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
3138         { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
3139         { HOSTAPD_MODE_IEEE80211A, 125, 149, 169, 4, BW20 },
3140         { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
3141         { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
3142         { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
3143         { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
3144
3145         /*
3146          * IEEE P802.11ac/D7.0 Table E-4 actually talks about channel center
3147          * frequency index 42, 58, 106, 122, 138, 155 with channel spacing of
3148          * 80 MHz, but currently use the following definition for simplicity
3149          * (these center frequencies are not actual channels, which makes
3150          * has_channel() fail). wpas_p2p_verify_80mhz() should take care of
3151          * removing invalid channels.
3152          */
3153         { HOSTAPD_MODE_IEEE80211A, 128, 36, 161, 4, BW80 },
3154         { HOSTAPD_MODE_IEEE80211AD, 180, 1, 4, 1, BW2160 },
3155         { -1, 0, 0, 0, 0, BW20 }
3156 };
3157
3158
3159 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3160                                      struct hostapd_hw_modes *mode,
3161                                      u8 channel)
3162 {
3163         u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3164         unsigned int i;
3165
3166         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3167                 return 0;
3168
3169         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3170                 /*
3171                  * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3172                  * so the center channel is 6 channels away from the start/end.
3173                  */
3174                 if (channel >= center_channels[i] - 6 &&
3175                     channel <= center_channels[i] + 6)
3176                         return center_channels[i];
3177
3178         return 0;
3179 }
3180
3181
3182 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3183                                                struct hostapd_hw_modes *mode,
3184                                                u8 channel, u8 bw)
3185 {
3186         u8 center_chan;
3187         int i, flags;
3188         enum chan_allowed res, ret = ALLOWED;
3189
3190         center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3191         if (!center_chan)
3192                 return NOT_ALLOWED;
3193         if (center_chan >= 58 && center_chan <= 138)
3194                 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3195
3196         /* check all the channels are available */
3197         for (i = 0; i < 4; i++) {
3198                 int adj_chan = center_chan - 6 + i * 4;
3199
3200                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3201                 if (res == NOT_ALLOWED)
3202                         return NOT_ALLOWED;
3203                 if (res == NO_IR)
3204                         ret = NO_IR;
3205
3206                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3207                         return NOT_ALLOWED;
3208                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3209                         return NOT_ALLOWED;
3210                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3211                         return NOT_ALLOWED;
3212                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3213                         return NOT_ALLOWED;
3214         }
3215
3216         return ret;
3217 }
3218
3219
3220 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3221                                                  struct hostapd_hw_modes *mode,
3222                                                  u8 channel, u8 bw)
3223 {
3224         int flag = 0;
3225         enum chan_allowed res, res2;
3226
3227         res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3228         if (bw == BW40MINUS) {
3229                 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3230                         return NOT_ALLOWED;
3231                 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3232         } else if (bw == BW40PLUS) {
3233                 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3234                         return NOT_ALLOWED;
3235                 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3236         } else if (bw == BW80) {
3237                 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3238         }
3239
3240         if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3241                 return NOT_ALLOWED;
3242         if (res == NO_IR || res2 == NO_IR)
3243                 return NO_IR;
3244         return res;
3245 }
3246
3247
3248 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3249                                    struct p2p_channels *chan,
3250                                    struct p2p_channels *cli_chan)
3251 {
3252         struct hostapd_hw_modes *mode;
3253         int cla, op, cli_cla;
3254
3255         if (wpa_s->hw.modes == NULL) {
3256                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3257                            "of all supported channels; assume dualband "
3258                            "support");
3259                 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3260         }
3261
3262         cla = cli_cla = 0;
3263
3264         for (op = 0; op_class[op].op_class; op++) {
3265                 const struct p2p_oper_class_map *o = &op_class[op];
3266                 u8 ch;
3267                 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3268
3269                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3270                 if (mode == NULL)
3271                         continue;
3272                 if (mode->mode == HOSTAPD_MODE_IEEE80211G)
3273                         wpa_s->global->p2p_24ghz_social_channels = 1;
3274                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3275                         enum chan_allowed res;
3276                         res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3277                         if (res == ALLOWED) {
3278                                 if (reg == NULL) {
3279                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3280                                                    o->op_class);
3281                                         reg = &chan->reg_class[cla];
3282                                         cla++;
3283                                         reg->reg_class = o->op_class;
3284                                 }
3285                                 reg->channel[reg->channels] = ch;
3286                                 reg->channels++;
3287                         } else if (res == NO_IR &&
3288                                    wpa_s->conf->p2p_add_cli_chan) {
3289                                 if (cli_reg == NULL) {
3290                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3291                                                    o->op_class);
3292                                         cli_reg = &cli_chan->reg_class[cli_cla];
3293                                         cli_cla++;
3294                                         cli_reg->reg_class = o->op_class;
3295                                 }
3296                                 cli_reg->channel[cli_reg->channels] = ch;
3297                                 cli_reg->channels++;
3298                         }
3299                 }
3300                 if (reg) {
3301                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3302                                     reg->channel, reg->channels);
3303                 }
3304                 if (cli_reg) {
3305                         wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3306                                     cli_reg->channel, cli_reg->channels);
3307                 }
3308         }
3309
3310         chan->reg_classes = cla;
3311         cli_chan->reg_classes = cli_cla;
3312
3313         return 0;
3314 }
3315
3316
3317 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3318                            struct hostapd_hw_modes *mode, u8 channel)
3319 {
3320         int op;
3321         enum chan_allowed ret;
3322
3323         for (op = 0; op_class[op].op_class; op++) {
3324                 const struct p2p_oper_class_map *o = &op_class[op];
3325                 u8 ch;
3326
3327                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3328                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3329                             (o->bw != BW40PLUS && o->bw != BW40MINUS) ||
3330                             ch != channel)
3331                                 continue;
3332                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3333                         if (ret == ALLOWED)
3334                                 return (o->bw == BW40MINUS) ? -1 : 1;
3335                 }
3336         }
3337         return 0;
3338 }
3339
3340
3341 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3342                               struct hostapd_hw_modes *mode, u8 channel)
3343 {
3344         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3345                 return 0;
3346
3347         return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3348 }
3349
3350
3351 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3352                         size_t buf_len)
3353 {
3354         struct wpa_supplicant *wpa_s = ctx;
3355
3356         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3357                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3358                         break;
3359         }
3360         if (wpa_s == NULL)
3361                 return -1;
3362
3363         return wpa_drv_get_noa(wpa_s, buf, buf_len);
3364 }
3365
3366
3367 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s,
3368                                               const u8 *ssid, size_t ssid_len)
3369 {
3370         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3371                 struct wpa_ssid *s = wpa_s->current_ssid;
3372                 if (s == NULL)
3373                         continue;
3374                 if (s->mode != WPAS_MODE_P2P_GO &&
3375                     s->mode != WPAS_MODE_AP &&
3376                     s->mode != WPAS_MODE_P2P_GROUP_FORMATION)
3377                         continue;
3378                 if (s->ssid_len != ssid_len ||
3379                     os_memcmp(ssid, s->ssid, ssid_len) != 0)
3380                         continue;
3381                 return wpa_s;
3382         }
3383
3384         return NULL;
3385
3386 }
3387
3388
3389 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s,
3390                                                   const u8 *peer_dev_addr)
3391 {
3392         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3393                 struct wpa_ssid *ssid = wpa_s->current_ssid;
3394                 if (ssid == NULL)
3395                         continue;
3396                 if (ssid->mode != WPAS_MODE_INFRA)
3397                         continue;
3398                 if (wpa_s->wpa_state != WPA_COMPLETED &&
3399                     wpa_s->wpa_state != WPA_GROUP_HANDSHAKE)
3400                         continue;
3401                 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0)
3402                         return wpa_s;
3403         }
3404
3405         return NULL;
3406 }
3407
3408
3409 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3410 {
3411         struct wpa_supplicant *wpa_s = ctx;
3412
3413         return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL;
3414 }
3415
3416
3417 static int wpas_is_concurrent_session_active(void *ctx)
3418 {
3419         struct wpa_supplicant *wpa_s = ctx;
3420         struct wpa_supplicant *ifs;
3421
3422         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3423                 if (ifs == wpa_s)
3424                         continue;
3425                 if (ifs->wpa_state > WPA_ASSOCIATED)
3426                         return 1;
3427         }
3428         return 0;
3429 }
3430
3431
3432 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3433 {
3434         struct wpa_supplicant *wpa_s = ctx;
3435         wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3436 }
3437
3438
3439 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s,
3440                                   const char *conf_p2p_dev)
3441 {
3442         struct wpa_interface iface;
3443         struct wpa_supplicant *p2pdev_wpa_s;
3444         char ifname[100];
3445         char force_name[100];
3446         int ret;
3447
3448         ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3449                           wpa_s->ifname);
3450         if (os_snprintf_error(sizeof(ifname), ret))
3451                 return -1;
3452         force_name[0] = '\0';
3453         wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3454         ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3455                              force_name, wpa_s->pending_interface_addr, NULL);
3456         if (ret < 0) {
3457                 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3458                 return ret;
3459         }
3460         os_strlcpy(wpa_s->pending_interface_name, ifname,
3461                    sizeof(wpa_s->pending_interface_name));
3462
3463         os_memset(&iface, 0, sizeof(iface));
3464         iface.p2p_mgmt = 1;
3465         iface.ifname = wpa_s->pending_interface_name;
3466         iface.driver = wpa_s->driver->name;
3467         iface.driver_param = wpa_s->conf->driver_param;
3468
3469         /*
3470          * If a P2P Device configuration file was given, use it as the interface
3471          * configuration file (instead of using parent's configuration file.
3472          */
3473         if (conf_p2p_dev) {
3474                 iface.confname = conf_p2p_dev;
3475                 iface.ctrl_interface = NULL;
3476         } else {
3477                 iface.confname = wpa_s->confname;
3478                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3479         }
3480
3481         p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
3482         if (!p2pdev_wpa_s) {
3483                 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3484                 return -1;
3485         }
3486
3487         wpa_s->pending_interface_name[0] = '\0';
3488         return 0;
3489 }
3490
3491
3492 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3493                                const u8 *noa, size_t noa_len)
3494 {
3495         struct wpa_supplicant *wpa_s, *intf = ctx;
3496         char hex[100];
3497
3498         for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3499                 if (wpa_s->waiting_presence_resp)
3500                         break;
3501         }
3502         if (!wpa_s) {
3503                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3504                 return;
3505         }
3506         wpa_s->waiting_presence_resp = 0;
3507
3508         wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3509         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3510                 " status=%u noa=%s", MAC2STR(src), status, hex);
3511 }
3512
3513
3514 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid,
3515                                      size_t ssid_len, u8 *go_dev_addr,
3516                                      u8 *ret_ssid, size_t *ret_ssid_len,
3517                                      u8 *intended_iface_addr)
3518 {
3519         struct wpa_supplicant *wpa_s = ctx;
3520         struct wpa_ssid *s;
3521
3522         s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len);
3523         if (s) {
3524                 os_memcpy(ret_ssid, s->ssid, s->ssid_len);
3525                 *ret_ssid_len = s->ssid_len;
3526                 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN);
3527
3528                 if (s->mode != WPAS_MODE_P2P_GO) {
3529                         os_memset(intended_iface_addr, 0, ETH_ALEN);
3530                 } else if (wpas_p2p_create_iface(wpa_s)) {
3531                         if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO))
3532                                 return 0;
3533
3534                         os_memcpy(intended_iface_addr,
3535                                   wpa_s->pending_interface_addr, ETH_ALEN);
3536                 } else {
3537                         os_memcpy(intended_iface_addr, wpa_s->own_addr,
3538                                   ETH_ALEN);
3539                 }
3540                 return 1;
3541         }
3542
3543         return 0;
3544 }
3545
3546
3547 static int wpas_get_go_info(void *ctx, u8 *intended_addr,
3548                             u8 *ssid, size_t *ssid_len, int *group_iface)
3549 {
3550         struct wpa_supplicant *wpa_s = ctx;
3551         struct wpa_ssid *s;
3552         u8 bssid[ETH_ALEN];
3553
3554         /*
3555          * group_iface will be set to 1 only if a dedicated interface for P2P
3556          * role is required. First, we try to reuse an active GO. However,
3557          * if it is not present, we will try to reactivate an existing
3558          * persistent group and set group_iface to 1, so the caller will know
3559          * that the pending interface should be used.
3560          */
3561         *group_iface = 0;
3562         s = wpas_p2p_group_go_ssid(wpa_s, bssid);
3563         if (!s) {
3564                 s = wpas_p2p_get_persistent_go(wpa_s);
3565                 *group_iface = wpas_p2p_create_iface(wpa_s);
3566                 if (s)
3567                         os_memcpy(bssid, s->bssid, ETH_ALEN);
3568                 else
3569                         return 0;
3570         }
3571
3572         os_memcpy(intended_addr, bssid, ETH_ALEN);
3573         os_memcpy(ssid, s->ssid, s->ssid_len);
3574         *ssid_len = s->ssid_len;
3575
3576         return 1;
3577 }
3578
3579
3580 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go,
3581                                     const u8 *ssid, size_t ssid_len)
3582 {
3583         struct wpa_supplicant *wpa_s = ctx;
3584         struct wpa_ssid *s;
3585         int save_config = 0;
3586         size_t i;
3587
3588         /* Start with our first choice of Persistent Groups */
3589         while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) {
3590                 if (go && ssid && ssid_len &&
3591                     s->ssid_len == ssid_len &&
3592                     os_memcmp(go, s->bssid, ETH_ALEN) == 0 &&
3593                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3594                         break;
3595
3596                 /* Remove stale persistent group */
3597                 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) {
3598                         wpa_config_remove_network(wpa_s->conf, s->id);
3599                         save_config = 1;
3600                         continue;
3601                 }
3602
3603                 for (i = 0; i < s->num_p2p_clients; i++) {
3604                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
3605                                       peer, ETH_ALEN) != 0)
3606                                 continue;
3607
3608                         os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
3609                                    s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3610                                    (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3611                         break;
3612                 }
3613                 s->num_p2p_clients--;
3614                 save_config = 1;
3615         }
3616
3617         if (save_config)
3618                 p2p_config_write(wpa_s);
3619
3620         /* Return TRUE if valid SSID remains */
3621         return s != NULL;
3622 }
3623
3624
3625 static void wpas_p2ps_get_feat_cap_str(char *buf, size_t buf_len,
3626                                        const u8 *feat_cap, size_t feat_cap_len)
3627 {
3628         static const char pref[] = " feature_cap=";
3629         int ret;
3630
3631         buf[0] = '\0';
3632
3633         /*
3634          * We expect a feature capability to contain at least one byte to be
3635          * reported. The string buffer provided by the caller function is
3636          * expected to be big enough to contain all bytes of the attribute for
3637          * known specifications. This function truncates the reported bytes if
3638          * the feature capability data exceeds the string buffer size.
3639          */
3640         if (!feat_cap || !feat_cap_len || buf_len < sizeof(pref) + 2)
3641                 return;
3642
3643         os_memcpy(buf, pref, sizeof(pref));
3644         ret = wpa_snprintf_hex(&buf[sizeof(pref) - 1],
3645                                buf_len - sizeof(pref) + 1,
3646                                feat_cap, feat_cap_len);
3647
3648         if (ret != (2 * (int) feat_cap_len))
3649                 wpa_printf(MSG_WARNING, "P2PS feature_cap bytes truncated");
3650 }
3651
3652
3653 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev,
3654                                     const u8 *adv_mac, const u8 *ses_mac,
3655                                     const u8 *grp_mac, u32 adv_id, u32 ses_id,
3656                                     u8 conncap, int passwd_id,
3657                                     const u8 *persist_ssid,
3658                                     size_t persist_ssid_size, int response_done,
3659                                     int prov_start, const char *session_info,
3660                                     const u8 *feat_cap, size_t feat_cap_len)
3661 {
3662         struct wpa_supplicant *wpa_s = ctx;
3663         u8 mac[ETH_ALEN];
3664         struct wpa_ssid *persistent_go, *stale, *s;
3665         int save_config = 0;
3666         struct wpa_supplicant *go_wpa_s;
3667         char feat_cap_str[256];
3668
3669         if (!dev)
3670                 return;
3671
3672         os_memset(mac, 0, ETH_ALEN);
3673         if (!adv_mac)
3674                 adv_mac = mac;
3675         if (!ses_mac)
3676                 ses_mac = mac;
3677         if (!grp_mac)
3678                 grp_mac = mac;
3679
3680         wpas_p2ps_get_feat_cap_str(feat_cap_str, sizeof(feat_cap_str),
3681                                    feat_cap, feat_cap_len);
3682
3683         if (prov_start) {
3684                 if (session_info == NULL) {
3685                         wpa_msg_global(wpa_s, MSG_INFO,
3686                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3687                                        " adv_id=%x conncap=%x"
3688                                        " adv_mac=" MACSTR
3689                                        " session=%x mac=" MACSTR
3690                                        " dev_passwd_id=%d%s",
3691                                        MAC2STR(dev), adv_id, conncap,
3692                                        MAC2STR(adv_mac),
3693                                        ses_id, MAC2STR(ses_mac),
3694                                        passwd_id, feat_cap_str);
3695                 } else {
3696                         wpa_msg_global(wpa_s, MSG_INFO,
3697                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3698                                        " adv_id=%x conncap=%x"
3699                                        " adv_mac=" MACSTR
3700                                        " session=%x mac=" MACSTR
3701                                        " dev_passwd_id=%d info='%s'%s",
3702                                        MAC2STR(dev), adv_id, conncap,
3703                                        MAC2STR(adv_mac),
3704                                        ses_id, MAC2STR(ses_mac),
3705                                        passwd_id, session_info, feat_cap_str);
3706                 }
3707                 return;
3708         }
3709
3710         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
3711         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
3712
3713         if (status && status != P2P_SC_SUCCESS_DEFERRED) {
3714                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
3715                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
3716
3717                 if (persistent_go && !persistent_go->num_p2p_clients) {
3718                         /* remove empty persistent GO */
3719                         wpa_config_remove_network(wpa_s->conf,
3720                                                   persistent_go->id);
3721                 }
3722
3723                 wpa_msg_global(wpa_s, MSG_INFO,
3724                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3725                                " status=%d"
3726                                " adv_id=%x adv_mac=" MACSTR
3727                                " session=%x mac=" MACSTR "%s",
3728                                MAC2STR(dev), status,
3729                                adv_id, MAC2STR(adv_mac),
3730                                ses_id, MAC2STR(ses_mac), feat_cap_str);
3731                 return;
3732         }
3733
3734         /* Clean up stale persistent groups with this device */
3735         s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid,
3736                                     persist_ssid_size);
3737
3738         if (persist_ssid && s && s->mode != WPAS_MODE_P2P_GO &&
3739             os_memcmp(grp_mac, mac, ETH_ALEN) == 0) {
3740                 wpa_dbg(wpa_s, MSG_ERROR,
3741                         "P2P: Peer device is a GO in a persistent group, but it did not provide the intended MAC address");
3742                 return;
3743         }
3744
3745         for (;;) {
3746                 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0);
3747                 if (!stale)
3748                         break;
3749
3750                 if (s && s->ssid_len == stale->ssid_len &&
3751                     os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 &&
3752                     os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0)
3753                         break;
3754
3755                 /* Remove stale persistent group */
3756                 if (stale->mode != WPAS_MODE_P2P_GO ||
3757                     stale->num_p2p_clients <= 1) {
3758                         wpa_config_remove_network(wpa_s->conf, stale->id);
3759                 } else {
3760                         size_t i;
3761
3762                         for (i = 0; i < stale->num_p2p_clients; i++) {
3763                                 if (os_memcmp(stale->p2p_client_list +
3764                                               i * ETH_ALEN,
3765                                               dev, ETH_ALEN) == 0) {
3766                                         os_memmove(stale->p2p_client_list +
3767                                                    i * ETH_ALEN,
3768                                                    stale->p2p_client_list +
3769                                                    (i + 1) * ETH_ALEN,
3770                                                    (stale->num_p2p_clients -
3771                                                     i - 1) * ETH_ALEN);
3772                                         break;
3773                                 }
3774                         }
3775                         stale->num_p2p_clients--;
3776                 }
3777                 save_config = 1;
3778         }
3779
3780         if (save_config)
3781                 p2p_config_write(wpa_s);
3782
3783         if (s) {
3784                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
3785                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
3786
3787                 if (persistent_go && s != persistent_go &&
3788                     !persistent_go->num_p2p_clients) {
3789                         /* remove empty persistent GO */
3790                         wpa_config_remove_network(wpa_s->conf,
3791                                                   persistent_go->id);
3792                         /* Save config */
3793                 }
3794
3795                 wpa_msg_global(wpa_s, MSG_INFO,
3796                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3797                                " status=%d"
3798                                " adv_id=%x adv_mac=" MACSTR
3799                                " session=%x mac=" MACSTR
3800                                " persist=%d%s",
3801                                MAC2STR(dev), status,
3802                                adv_id, MAC2STR(adv_mac),
3803                                ses_id, MAC2STR(ses_mac), s->id, feat_cap_str);
3804                 return;
3805         }
3806
3807         if (conncap == P2PS_SETUP_GROUP_OWNER) {
3808                 /*
3809                  * We need to copy the interface name. Simply saving a
3810                  * pointer isn't enough, since if we use pending_interface_name
3811                  * it will be overwritten when the group is added.
3812                  */
3813                 char go_ifname[100];
3814
3815                 go_ifname[0] = '\0';
3816                 if (!go_wpa_s) {
3817                         wpa_s->global->pending_p2ps_group = 1;
3818
3819                         if (!wpas_p2p_create_iface(wpa_s))
3820                                 os_memcpy(go_ifname, wpa_s->ifname,
3821                                           sizeof(go_ifname));
3822                         else if (wpa_s->pending_interface_name[0])
3823                                 os_memcpy(go_ifname,
3824                                           wpa_s->pending_interface_name,
3825                                           sizeof(go_ifname));
3826
3827                         if (!go_ifname[0]) {
3828                                 wpas_p2ps_prov_complete(
3829                                         wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP,
3830                                         dev, adv_mac, ses_mac,
3831                                         NULL, adv_id, ses_id, 0, 0,
3832                                         NULL, 0, 0, 0, NULL, NULL, 0);
3833                                 return;
3834                         }
3835
3836                         /* If PD Resp complete, start up the GO */
3837                         if (response_done && persistent_go) {
3838                                 wpas_p2p_group_add_persistent(
3839                                         wpa_s, persistent_go,
3840                                         0, 0, 0, 0, 0, NULL,
3841                                         persistent_go->mode ==
3842                                         WPAS_MODE_P2P_GO ?
3843                                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3844                                         0);
3845                         } else if (response_done) {
3846                                 wpas_p2p_group_add(wpa_s, 1, 0, 0, 0);
3847                         }
3848
3849                         if (passwd_id == DEV_PW_P2PS_DEFAULT) {
3850                                 os_memcpy(wpa_s->p2ps_join_addr, dev, ETH_ALEN);
3851                                 wpa_s->p2ps_join_addr_valid = 1;
3852                                 wpa_dbg(wpa_s, MSG_DEBUG,
3853                                         "P2PS: Saving PIN for " MACSTR,
3854                                         MAC2STR(dev));
3855                         }
3856                 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) {
3857                         os_memcpy(go_ifname, go_wpa_s->ifname,
3858                                   sizeof(go_ifname));
3859
3860                         wpa_dbg(go_wpa_s, MSG_DEBUG,
3861                                 "P2P: Setting PIN-1 For " MACSTR, MAC2STR(dev));
3862                         wpa_supplicant_ap_wps_pin(go_wpa_s, dev, "12345670",
3863                                                   NULL, 0, 0);
3864
3865                         os_memcpy(wpa_s->p2ps_join_addr, dev, ETH_ALEN);
3866                         wpa_s->p2ps_join_addr_valid = 1;
3867                         wpa_dbg(wpa_s, MSG_DEBUG,
3868                                 "P2PS: Saving PIN for " MACSTR, MAC2STR(dev));
3869                 }
3870
3871                 wpa_msg_global(wpa_s, MSG_INFO,
3872                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3873                                " status=%d conncap=%x"
3874                                " adv_id=%x adv_mac=" MACSTR
3875                                " session=%x mac=" MACSTR
3876                                " dev_passwd_id=%d go=%s%s",
3877                                MAC2STR(dev), status, conncap,
3878                                adv_id, MAC2STR(adv_mac),
3879                                ses_id, MAC2STR(ses_mac),
3880                                passwd_id, go_ifname, feat_cap_str);
3881                 return;
3882         }
3883
3884         if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
3885                 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
3886
3887         if (persistent_go && !persistent_go->num_p2p_clients) {
3888                 /* remove empty persistent GO */
3889                 wpa_config_remove_network(wpa_s->conf, persistent_go->id);
3890         }
3891
3892         if (conncap == P2PS_SETUP_CLIENT) {
3893                 wpa_msg_global(wpa_s, MSG_INFO,
3894                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3895                                " status=%d conncap=%x"
3896                                " adv_id=%x adv_mac=" MACSTR
3897                                " session=%x mac=" MACSTR
3898                                " dev_passwd_id=%d join=" MACSTR "%s",
3899                                MAC2STR(dev), status, conncap,
3900                                adv_id, MAC2STR(adv_mac),
3901                                ses_id, MAC2STR(ses_mac),
3902                                passwd_id, MAC2STR(grp_mac), feat_cap_str);
3903         } else {
3904                 wpa_msg_global(wpa_s, MSG_INFO,
3905                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3906                                " status=%d conncap=%x"
3907                                " adv_id=%x adv_mac=" MACSTR
3908                                " session=%x mac=" MACSTR
3909                                " dev_passwd_id=%d%s",
3910                                MAC2STR(dev), status, conncap,
3911                                adv_id, MAC2STR(adv_mac),
3912                                ses_id, MAC2STR(ses_mac),
3913                                passwd_id, feat_cap_str);
3914         }
3915 }
3916
3917
3918 static int _wpas_p2p_in_progress(void *ctx)
3919 {
3920         struct wpa_supplicant *wpa_s = ctx;
3921         return wpas_p2p_in_progress(wpa_s);
3922 }
3923
3924
3925 static int wpas_prov_disc_resp_cb(void *ctx)
3926 {
3927         struct wpa_supplicant *wpa_s = ctx;
3928         struct wpa_ssid *persistent_go;
3929
3930         if (!wpa_s->global->pending_p2ps_group)
3931                 return 0;
3932
3933         wpa_s->global->pending_p2ps_group = 0;
3934
3935         if (wpas_p2p_get_go_group(wpa_s))
3936                 return 0;
3937         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
3938
3939         if (persistent_go) {
3940                 wpas_p2p_group_add_persistent(
3941                         wpa_s, persistent_go, 0, 0, 0, 0, 0, NULL,
3942                         persistent_go->mode == WPAS_MODE_P2P_GO ?
3943                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0);
3944         } else {
3945                 wpas_p2p_group_add(wpa_s, 1, 0, 0, 0);
3946         }
3947
3948         return 1;
3949 }
3950
3951
3952 /**
3953  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
3954  * @global: Pointer to global data from wpa_supplicant_init()
3955  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3956  * Returns: 0 on success, -1 on failure
3957  */
3958 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
3959 {
3960         struct p2p_config p2p;
3961         int i;
3962
3963         if (wpa_s->conf->p2p_disabled)
3964                 return 0;
3965
3966         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
3967                 return 0;
3968
3969         if (global->p2p)
3970                 return 0;
3971
3972         os_memset(&p2p, 0, sizeof(p2p));
3973         p2p.cb_ctx = wpa_s;
3974         p2p.debug_print = wpas_p2p_debug_print;
3975         p2p.p2p_scan = wpas_p2p_scan;
3976         p2p.send_action = wpas_send_action;
3977         p2p.send_action_done = wpas_send_action_done;
3978         p2p.go_neg_completed = wpas_go_neg_completed;
3979         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
3980         p2p.dev_found = wpas_dev_found;
3981         p2p.dev_lost = wpas_dev_lost;
3982         p2p.find_stopped = wpas_find_stopped;
3983         p2p.start_listen = wpas_start_listen;
3984         p2p.stop_listen = wpas_stop_listen;
3985         p2p.send_probe_resp = wpas_send_probe_resp;
3986         p2p.sd_request = wpas_sd_request;
3987         p2p.sd_response = wpas_sd_response;
3988         p2p.prov_disc_req = wpas_prov_disc_req;
3989         p2p.prov_disc_resp = wpas_prov_disc_resp;
3990         p2p.prov_disc_fail = wpas_prov_disc_fail;
3991         p2p.invitation_process = wpas_invitation_process;
3992         p2p.invitation_received = wpas_invitation_received;
3993         p2p.invitation_result = wpas_invitation_result;
3994         p2p.get_noa = wpas_get_noa;
3995         p2p.go_connected = wpas_go_connected;
3996         p2p.presence_resp = wpas_presence_resp;
3997         p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
3998         p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
3999         p2p.get_persistent_group = wpas_get_persistent_group;
4000         p2p.get_go_info = wpas_get_go_info;
4001         p2p.remove_stale_groups = wpas_remove_stale_groups;
4002         p2p.p2ps_prov_complete = wpas_p2ps_prov_complete;
4003         p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb;
4004         p2p.p2ps_group_capability = p2ps_group_capability;
4005
4006         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
4007         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
4008         p2p.dev_name = wpa_s->conf->device_name;
4009         p2p.manufacturer = wpa_s->conf->manufacturer;
4010         p2p.model_name = wpa_s->conf->model_name;
4011         p2p.model_number = wpa_s->conf->model_number;
4012         p2p.serial_number = wpa_s->conf->serial_number;
4013         if (wpa_s->wps) {
4014                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
4015                 p2p.config_methods = wpa_s->wps->config_methods;
4016         }
4017
4018         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
4019                 wpa_printf(MSG_ERROR,
4020                            "P2P: Failed to configure supported channel list");
4021                 return -1;
4022         }
4023
4024         if (wpa_s->conf->p2p_listen_reg_class &&
4025             wpa_s->conf->p2p_listen_channel) {
4026                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
4027                 p2p.channel = wpa_s->conf->p2p_listen_channel;
4028                 p2p.channel_forced = 1;
4029         } else {
4030                 /*
4031                  * Pick one of the social channels randomly as the listen
4032                  * channel.
4033                  */
4034                 if (p2p_config_get_random_social(&p2p, &p2p.reg_class,
4035                                                  &p2p.channel) != 0) {
4036                         wpa_printf(MSG_INFO,
4037                                    "P2P: No social channels supported by the driver - do not enable P2P");
4038                         return 0;
4039                 }
4040                 p2p.channel_forced = 0;
4041         }
4042         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d",
4043                    p2p.reg_class, p2p.channel);
4044
4045         if (wpa_s->conf->p2p_oper_reg_class &&
4046             wpa_s->conf->p2p_oper_channel) {
4047                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4048                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
4049                 p2p.cfg_op_channel = 1;
4050                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
4051                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4052
4053         } else {
4054                 /*
4055                  * Use random operation channel from 2.4 GHz band social
4056                  * channels (1, 6, 11) or band 60 GHz social channel (2) if no
4057                  * other preference is indicated.
4058                  */
4059                 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class,
4060                                                  &p2p.op_channel) != 0) {
4061                         wpa_printf(MSG_ERROR,
4062                                    "P2P: Failed to select random social channel as operation channel");
4063                         return -1;
4064                 }
4065                 p2p.cfg_op_channel = 0;
4066                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
4067                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4068         }
4069
4070         if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
4071                 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
4072                 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
4073         }
4074
4075         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4076                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
4077                 p2p.country[2] = 0x04;
4078         } else
4079                 os_memcpy(p2p.country, "XX\x04", 3);
4080
4081         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
4082                   WPS_DEV_TYPE_LEN);
4083
4084         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
4085         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
4086                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
4087
4088         p2p.concurrent_operations = !!(wpa_s->drv_flags &
4089                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
4090
4091         p2p.max_peers = 100;
4092
4093         if (wpa_s->conf->p2p_ssid_postfix) {
4094                 p2p.ssid_postfix_len =
4095                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
4096                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
4097                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
4098                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
4099                           p2p.ssid_postfix_len);
4100         }
4101
4102         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
4103
4104         p2p.max_listen = wpa_s->max_remain_on_chan;
4105
4106         if (wpa_s->conf->p2p_passphrase_len >= 8 &&
4107             wpa_s->conf->p2p_passphrase_len <= 63)
4108                 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len;
4109         else
4110                 p2p.passphrase_len = 8;
4111
4112         global->p2p = p2p_init(&p2p);
4113         if (global->p2p == NULL)
4114                 return -1;
4115         global->p2p_init_wpa_s = wpa_s;
4116
4117         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4118                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4119                         continue;
4120                 p2p_add_wps_vendor_extension(
4121                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
4122         }
4123
4124         p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
4125
4126         return 0;
4127 }
4128
4129
4130 /**
4131  * wpas_p2p_deinit - Deinitialize per-interface P2P data
4132  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4133  *
4134  * This function deinitialize per-interface P2P data.
4135  */
4136 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
4137 {
4138         if (wpa_s->driver && wpa_s->drv_priv)
4139                 wpa_drv_probe_req_report(wpa_s, 0);
4140
4141         if (wpa_s->go_params) {
4142                 /* Clear any stored provisioning info */
4143                 p2p_clear_provisioning_info(
4144                         wpa_s->global->p2p,
4145                         wpa_s->go_params->peer_device_addr);
4146         }
4147
4148         os_free(wpa_s->go_params);
4149         wpa_s->go_params = NULL;
4150         eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
4151         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4152         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4153         wpa_s->p2p_long_listen = 0;
4154         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4155         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4156         wpas_p2p_remove_pending_group_interface(wpa_s);
4157         eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
4158         wpas_p2p_listen_work_done(wpa_s);
4159         if (wpa_s->p2p_send_action_work) {
4160                 os_free(wpa_s->p2p_send_action_work->ctx);
4161                 radio_work_done(wpa_s->p2p_send_action_work);
4162                 wpa_s->p2p_send_action_work = NULL;
4163         }
4164         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
4165
4166         wpabuf_free(wpa_s->p2p_oob_dev_pw);
4167         wpa_s->p2p_oob_dev_pw = NULL;
4168
4169         os_free(wpa_s->p2p_group_common_freqs);
4170         wpa_s->p2p_group_common_freqs = NULL;
4171         wpa_s->p2p_group_common_freqs_num = 0;
4172
4173         /* TODO: remove group interface from the driver if this wpa_s instance
4174          * is on top of a P2P group interface */
4175 }
4176
4177
4178 /**
4179  * wpas_p2p_deinit_global - Deinitialize global P2P module
4180  * @global: Pointer to global data from wpa_supplicant_init()
4181  *
4182  * This function deinitializes the global (per device) P2P module.
4183  */
4184 static void wpas_p2p_deinit_global(struct wpa_global *global)
4185 {
4186         struct wpa_supplicant *wpa_s, *tmp;
4187
4188         wpa_s = global->ifaces;
4189
4190         wpas_p2p_service_flush(global->p2p_init_wpa_s);
4191
4192         /* Remove remaining P2P group interfaces */
4193         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
4194                 wpa_s = wpa_s->next;
4195         while (wpa_s) {
4196                 tmp = global->ifaces;
4197                 while (tmp &&
4198                        (tmp == wpa_s ||
4199                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
4200                         tmp = tmp->next;
4201                 }
4202                 if (tmp == NULL)
4203                         break;
4204                 /* Disconnect from the P2P group and deinit the interface */
4205                 wpas_p2p_disconnect(tmp);
4206         }
4207
4208         /*
4209          * Deinit GO data on any possibly remaining interface (if main
4210          * interface is used as GO).
4211          */
4212         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4213                 if (wpa_s->ap_iface)
4214                         wpas_p2p_group_deinit(wpa_s);
4215         }
4216
4217         p2p_deinit(global->p2p);
4218         global->p2p = NULL;
4219         global->p2p_init_wpa_s = NULL;
4220 }
4221
4222
4223 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4224 {
4225         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
4226             wpa_s->conf->p2p_no_group_iface)
4227                 return 0; /* separate interface disabled per configuration */
4228         if (wpa_s->drv_flags &
4229             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4230              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4231                 return 1; /* P2P group requires a new interface in every case
4232                            */
4233         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4234                 return 0; /* driver does not support concurrent operations */
4235         if (wpa_s->global->ifaces->next)
4236                 return 1; /* more that one interface already in use */
4237         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4238                 return 1; /* this interface is already in use */
4239         return 0;
4240 }
4241
4242
4243 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4244                                  const u8 *peer_addr,
4245                                  enum p2p_wps_method wps_method,
4246                                  int go_intent, const u8 *own_interface_addr,
4247                                  unsigned int force_freq, int persistent_group,
4248                                  struct wpa_ssid *ssid, unsigned int pref_freq)
4249 {
4250         if (persistent_group && wpa_s->conf->persistent_reconnect)
4251                 persistent_group = 2;
4252
4253         /*
4254          * Increase GO config timeout if HT40 is used since it takes some time
4255          * to scan channels for coex purposes before the BSS can be started.
4256          */
4257         p2p_set_config_timeout(wpa_s->global->p2p,
4258                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4259
4260         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4261                            go_intent, own_interface_addr, force_freq,
4262                            persistent_group, ssid ? ssid->ssid : NULL,
4263                            ssid ? ssid->ssid_len : 0,
4264                            wpa_s->p2p_pd_before_go_neg, pref_freq,
4265                            wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4266                            0);
4267 }
4268
4269
4270 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4271                                 const u8 *peer_addr,
4272                                 enum p2p_wps_method wps_method,
4273                                 int go_intent, const u8 *own_interface_addr,
4274                                 unsigned int force_freq, int persistent_group,
4275                                 struct wpa_ssid *ssid, unsigned int pref_freq)
4276 {
4277         if (persistent_group && wpa_s->conf->persistent_reconnect)
4278                 persistent_group = 2;
4279
4280         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4281                              go_intent, own_interface_addr, force_freq,
4282                              persistent_group, ssid ? ssid->ssid : NULL,
4283                              ssid ? ssid->ssid_len : 0, pref_freq,
4284                              wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4285                              0);
4286 }
4287
4288
4289 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4290 {
4291         wpa_s->p2p_join_scan_count++;
4292         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4293                    wpa_s->p2p_join_scan_count);
4294         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4295                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4296                            " for join operationg - stop join attempt",
4297                            MAC2STR(wpa_s->pending_join_iface_addr));
4298                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4299                 if (wpa_s->p2p_auto_pd) {
4300                         wpa_s->p2p_auto_pd = 0;
4301                         wpa_msg_global(wpa_s, MSG_INFO,
4302                                        P2P_EVENT_PROV_DISC_FAILURE
4303                                        " p2p_dev_addr=" MACSTR " status=N/A",
4304                                        MAC2STR(wpa_s->pending_join_dev_addr));
4305                         return;
4306                 }
4307                 wpa_msg_global(wpa_s->parent, MSG_INFO,
4308                                P2P_EVENT_GROUP_FORMATION_FAILURE);
4309         }
4310 }
4311
4312
4313 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4314 {
4315         int res;
4316         unsigned int num, i;
4317         struct wpa_used_freq_data *freqs;
4318
4319         if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4320                 /* Multiple channels are supported and not all are in use */
4321                 return 0;
4322         }
4323
4324         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4325                           sizeof(struct wpa_used_freq_data));
4326         if (!freqs)
4327                 return 1;
4328
4329         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4330                                         wpa_s->num_multichan_concurrent);
4331
4332         for (i = 0; i < num; i++) {
4333                 if (freqs[i].freq == freq) {
4334                         wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4335                                    freq);
4336                         res = 0;
4337                         goto exit_free;
4338                 }
4339         }
4340
4341         wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
4342         res = 1;
4343
4344 exit_free:
4345         os_free(freqs);
4346         return res;
4347 }
4348
4349
4350 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4351                             const u8 *peer_dev_addr)
4352 {
4353         struct wpa_bss *bss;
4354         int updated;
4355
4356         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4357         if (bss == NULL)
4358                 return -1;
4359         if (bss->last_update_idx < wpa_s->bss_update_idx) {
4360                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4361                            "last scan");
4362                 return 0;
4363         }
4364
4365         updated = os_reltime_before(&wpa_s->p2p_auto_started,
4366                                     &bss->last_update);
4367         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4368                    "%ld.%06ld (%supdated in last scan)",
4369                    bss->last_update.sec, bss->last_update.usec,
4370                    updated ? "": "not ");
4371
4372         return updated;
4373 }
4374
4375
4376 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4377                                    struct wpa_scan_results *scan_res)
4378 {
4379         struct wpa_bss *bss = NULL;
4380         int freq;
4381         u8 iface_addr[ETH_ALEN];
4382
4383         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4384
4385         if (wpa_s->global->p2p_disabled)
4386                 return;
4387
4388         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4389                    scan_res ? (int) scan_res->num : -1,
4390                    wpa_s->p2p_auto_join ? "auto_" : "");
4391
4392         if (scan_res)
4393                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4394
4395         if (wpa_s->p2p_auto_pd) {
4396                 int join = wpas_p2p_peer_go(wpa_s,
4397                                             wpa_s->pending_join_dev_addr);
4398                 if (join == 0 &&
4399                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4400                         wpa_s->auto_pd_scan_retry++;
4401                         bss = wpa_bss_get_bssid_latest(
4402                                 wpa_s, wpa_s->pending_join_dev_addr);
4403                         if (bss) {
4404                                 freq = bss->freq;
4405                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4406                                            "the peer " MACSTR " at %d MHz",
4407                                            wpa_s->auto_pd_scan_retry,
4408                                            MAC2STR(wpa_s->
4409                                                    pending_join_dev_addr),
4410                                            freq);
4411                                 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4412                                 return;
4413                         }
4414                 }
4415
4416                 if (join < 0)
4417                         join = 0;
4418
4419                 wpa_s->p2p_auto_pd = 0;
4420                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4421                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4422                            MAC2STR(wpa_s->pending_join_dev_addr), join);
4423                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4424                                       wpa_s->pending_join_dev_addr, NULL,
4425                                       wpa_s->pending_pd_config_methods, join,
4426                                       0, wpa_s->user_initiated_pd) < 0) {
4427                         wpa_s->p2p_auto_pd = 0;
4428                         wpa_msg_global(wpa_s, MSG_INFO,
4429                                        P2P_EVENT_PROV_DISC_FAILURE
4430                                        " p2p_dev_addr=" MACSTR " status=N/A",
4431                                        MAC2STR(wpa_s->pending_join_dev_addr));
4432                 }
4433                 return;
4434         }
4435
4436         if (wpa_s->p2p_auto_join) {
4437                 int join = wpas_p2p_peer_go(wpa_s,
4438                                             wpa_s->pending_join_dev_addr);
4439                 if (join < 0) {
4440                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4441                                    "running a GO -> use GO Negotiation");
4442                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4443                                        P2P_EVENT_FALLBACK_TO_GO_NEG
4444                                        "reason=peer-not-running-GO");
4445                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4446                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4447                                          wpa_s->p2p_persistent_group, 0, 0, 0,
4448                                          wpa_s->p2p_go_intent,
4449                                          wpa_s->p2p_connect_freq,
4450                                          wpa_s->p2p_persistent_id,
4451                                          wpa_s->p2p_pd_before_go_neg,
4452                                          wpa_s->p2p_go_ht40,
4453                                          wpa_s->p2p_go_vht);
4454                         return;
4455                 }
4456
4457                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4458                            "try to join the group", join ? "" :
4459                            " in older scan");
4460                 if (!join) {
4461                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4462                                        P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED);
4463                         wpa_s->p2p_fallback_to_go_neg = 1;
4464                 }
4465         }
4466
4467         freq = p2p_get_oper_freq(wpa_s->global->p2p,
4468                                  wpa_s->pending_join_iface_addr);
4469         if (freq < 0 &&
4470             p2p_get_interface_addr(wpa_s->global->p2p,
4471                                    wpa_s->pending_join_dev_addr,
4472                                    iface_addr) == 0 &&
4473             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0
4474             && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) {
4475                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4476                            "address for join from " MACSTR " to " MACSTR
4477                            " based on newly discovered P2P peer entry",
4478                            MAC2STR(wpa_s->pending_join_iface_addr),
4479                            MAC2STR(iface_addr));
4480                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4481                           ETH_ALEN);
4482
4483                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4484                                          wpa_s->pending_join_iface_addr);
4485         }
4486         if (freq >= 0) {
4487                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4488                            "from P2P peer table: %d MHz", freq);
4489         }
4490         if (wpa_s->p2p_join_ssid_len) {
4491                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4492                            MACSTR " and SSID %s",
4493                            MAC2STR(wpa_s->pending_join_iface_addr),
4494                            wpa_ssid_txt(wpa_s->p2p_join_ssid,
4495                                         wpa_s->p2p_join_ssid_len));
4496                 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4497                                   wpa_s->p2p_join_ssid,
4498                                   wpa_s->p2p_join_ssid_len);
4499         }
4500         if (!bss) {
4501                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4502                            MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4503                 bss = wpa_bss_get_bssid_latest(wpa_s,
4504                                                wpa_s->pending_join_iface_addr);
4505         }
4506         if (bss) {
4507                 u8 dev_addr[ETH_ALEN];
4508
4509                 freq = bss->freq;
4510                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4511                            "from BSS table: %d MHz (SSID %s)", freq,
4512                            wpa_ssid_txt(bss->ssid, bss->ssid_len));
4513                 if (p2p_parse_dev_addr((const u8 *) (bss + 1), bss->ie_len,
4514                                        dev_addr) == 0 &&
4515                     os_memcmp(wpa_s->pending_join_dev_addr,
4516                               wpa_s->pending_join_iface_addr, ETH_ALEN) == 0 &&
4517                     os_memcmp(dev_addr, wpa_s->pending_join_dev_addr,
4518                               ETH_ALEN) != 0) {
4519                         wpa_printf(MSG_DEBUG,
4520                                    "P2P: Update target GO device address based on BSS entry: " MACSTR " (was " MACSTR ")",
4521                                    MAC2STR(dev_addr),
4522                                    MAC2STR(wpa_s->pending_join_dev_addr));
4523                         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr,
4524                                   ETH_ALEN);
4525                 }
4526         }
4527         if (freq > 0) {
4528                 u16 method;
4529
4530                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4531                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4532                                        P2P_EVENT_GROUP_FORMATION_FAILURE
4533                                        "reason=FREQ_CONFLICT");
4534                         return;
4535                 }
4536
4537                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4538                            "prior to joining an existing group (GO " MACSTR
4539                            " freq=%u MHz)",
4540                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
4541                 wpa_s->pending_pd_before_join = 1;
4542
4543                 switch (wpa_s->pending_join_wps_method) {
4544                 case WPS_PIN_DISPLAY:
4545                         method = WPS_CONFIG_KEYPAD;
4546                         break;
4547                 case WPS_PIN_KEYPAD:
4548                         method = WPS_CONFIG_DISPLAY;
4549                         break;
4550                 case WPS_PBC:
4551                         method = WPS_CONFIG_PUSHBUTTON;
4552                         break;
4553                 default:
4554                         method = 0;
4555                         break;
4556                 }
4557
4558                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4559                                                wpa_s->pending_join_dev_addr) ==
4560                      method)) {
4561                         /*
4562                          * We have already performed provision discovery for
4563                          * joining the group. Proceed directly to join
4564                          * operation without duplicated provision discovery. */
4565                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4566                                    "with " MACSTR " already done - proceed to "
4567                                    "join",
4568                                    MAC2STR(wpa_s->pending_join_dev_addr));
4569                         wpa_s->pending_pd_before_join = 0;
4570                         goto start;
4571                 }
4572
4573                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4574                                       wpa_s->pending_join_dev_addr,
4575                                       NULL, method, 1,
4576                                       freq, wpa_s->user_initiated_pd) < 0) {
4577                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4578                                    "Discovery Request before joining an "
4579                                    "existing group");
4580                         wpa_s->pending_pd_before_join = 0;
4581                         goto start;
4582                 }
4583                 return;
4584         }
4585
4586         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4587         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4588         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4589         wpas_p2p_check_join_scan_limit(wpa_s);
4590         return;
4591
4592 start:
4593         /* Start join operation immediately */
4594         wpas_p2p_join_start(wpa_s, 0, NULL, 0);
4595 }
4596
4597
4598 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4599                                    const u8 *ssid, size_t ssid_len)
4600 {
4601         int ret;
4602         struct wpa_driver_scan_params params;
4603         struct wpabuf *wps_ie, *ies;
4604         size_t ielen;
4605         int freqs[2] = { 0, 0 };
4606
4607         os_memset(&params, 0, sizeof(params));
4608
4609         /* P2P Wildcard SSID */
4610         params.num_ssids = 1;
4611         if (ssid && ssid_len) {
4612                 params.ssids[0].ssid = ssid;
4613                 params.ssids[0].ssid_len = ssid_len;
4614                 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4615                 wpa_s->p2p_join_ssid_len = ssid_len;
4616         } else {
4617                 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4618                 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4619                 wpa_s->p2p_join_ssid_len = 0;
4620         }
4621
4622         wpa_s->wps->dev.p2p = 1;
4623         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4624                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4625                                         NULL);
4626         if (wps_ie == NULL) {
4627                 wpas_p2p_scan_res_join(wpa_s, NULL);
4628                 return;
4629         }
4630
4631         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4632         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4633         if (ies == NULL) {
4634                 wpabuf_free(wps_ie);
4635                 wpas_p2p_scan_res_join(wpa_s, NULL);
4636                 return;
4637         }
4638         wpabuf_put_buf(ies, wps_ie);
4639         wpabuf_free(wps_ie);
4640
4641         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4642
4643         params.p2p_probe = 1;
4644         params.extra_ies = wpabuf_head(ies);
4645         params.extra_ies_len = wpabuf_len(ies);
4646
4647         if (!freq) {
4648                 int oper_freq;
4649                 /*
4650                  * If freq is not provided, check the operating freq of the GO
4651                  * and use a single channel scan on if possible.
4652                  */
4653                 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4654                                               wpa_s->pending_join_iface_addr);
4655                 if (oper_freq > 0)
4656                         freq = oper_freq;
4657         }
4658         if (freq > 0) {
4659                 freqs[0] = freq;
4660                 params.freqs = freqs;
4661         }
4662
4663         /*
4664          * Run a scan to update BSS table and start Provision Discovery once
4665          * the new scan results become available.
4666          */
4667         ret = wpa_drv_scan(wpa_s, &params);
4668         if (!ret) {
4669                 os_get_reltime(&wpa_s->scan_trigger_time);
4670                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
4671                 wpa_s->own_scan_requested = 1;
4672         }
4673
4674         wpabuf_free(ies);
4675
4676         if (ret) {
4677                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
4678                            "try again later");
4679                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4680                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4681                 wpas_p2p_check_join_scan_limit(wpa_s);
4682         }
4683 }
4684
4685
4686 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
4687 {
4688         struct wpa_supplicant *wpa_s = eloop_ctx;
4689         wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
4690 }
4691
4692
4693 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
4694                          const u8 *dev_addr, enum p2p_wps_method wps_method,
4695                          int auto_join, int op_freq,
4696                          const u8 *ssid, size_t ssid_len)
4697 {
4698         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
4699                    MACSTR " dev " MACSTR " op_freq=%d)%s",
4700                    MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
4701                    auto_join ? " (auto_join)" : "");
4702         if (ssid && ssid_len) {
4703                 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
4704                            wpa_ssid_txt(ssid, ssid_len));
4705         }
4706
4707         wpa_s->p2p_auto_pd = 0;
4708         wpa_s->p2p_auto_join = !!auto_join;
4709         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
4710         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
4711         wpa_s->pending_join_wps_method = wps_method;
4712
4713         /* Make sure we are not running find during connection establishment */
4714         wpas_p2p_stop_find(wpa_s);
4715
4716         wpa_s->p2p_join_scan_count = 0;
4717         wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
4718         return 0;
4719 }
4720
4721
4722 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
4723                                const u8 *ssid, size_t ssid_len)
4724 {
4725         struct wpa_supplicant *group;
4726         struct p2p_go_neg_results res;
4727         struct wpa_bss *bss;
4728
4729         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
4730         if (group == NULL)
4731                 return -1;
4732         if (group != wpa_s) {
4733                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
4734                           sizeof(group->p2p_pin));
4735                 group->p2p_wps_method = wpa_s->p2p_wps_method;
4736         } else {
4737                 /*
4738                  * Need to mark the current interface for p2p_group_formation
4739                  * when a separate group interface is not used. This is needed
4740                  * to allow p2p_cancel stop a pending p2p_connect-join.
4741                  * wpas_p2p_init_group_interface() addresses this for the case
4742                  * where a separate group interface is used.
4743                  */
4744                 wpa_s->global->p2p_group_formation = wpa_s;
4745         }
4746
4747         group->p2p_in_provisioning = 1;
4748         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
4749
4750         os_memset(&res, 0, sizeof(res));
4751         os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
4752         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
4753                   ETH_ALEN);
4754         res.wps_method = wpa_s->pending_join_wps_method;
4755         if (freq && ssid && ssid_len) {
4756                 res.freq = freq;
4757                 res.ssid_len = ssid_len;
4758                 os_memcpy(res.ssid, ssid, ssid_len);
4759         } else {
4760                 bss = wpa_bss_get_bssid_latest(wpa_s,
4761                                                wpa_s->pending_join_iface_addr);
4762                 if (bss) {
4763                         res.freq = bss->freq;
4764                         res.ssid_len = bss->ssid_len;
4765                         os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
4766                         wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
4767                                    bss->freq,
4768                                    wpa_ssid_txt(bss->ssid, bss->ssid_len));
4769                 }
4770         }
4771
4772         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
4773                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
4774                            "starting client");
4775                 wpa_drv_cancel_remain_on_channel(wpa_s);
4776                 wpa_s->off_channel_freq = 0;
4777                 wpa_s->roc_waiting_drv_freq = 0;
4778         }
4779         wpas_start_wps_enrollee(group, &res);
4780
4781         /*
4782          * Allow a longer timeout for join-a-running-group than normal 15
4783          * second group formation timeout since the GO may not have authorized
4784          * our connection yet.
4785          */
4786         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4787         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
4788                                wpa_s, NULL);
4789
4790         return 0;
4791 }
4792
4793
4794 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
4795                                 int *force_freq, int *pref_freq, int go)
4796 {
4797         struct wpa_used_freq_data *freqs;
4798         int res, best_freq, num_unused;
4799         unsigned int freq_in_use = 0, num, i;
4800
4801         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4802                           sizeof(struct wpa_used_freq_data));
4803         if (!freqs)
4804                 return -1;
4805
4806         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4807                                         wpa_s->num_multichan_concurrent);
4808
4809         /*
4810          * It is possible that the total number of used frequencies is bigger
4811          * than the number of frequencies used for P2P, so get the system wide
4812          * number of unused frequencies.
4813          */
4814         num_unused = wpas_p2p_num_unused_channels(wpa_s);
4815
4816         wpa_printf(MSG_DEBUG,
4817                    "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
4818                    freq, wpa_s->num_multichan_concurrent, num, num_unused);
4819
4820         if (freq > 0) {
4821                 int ret;
4822                 if (go)
4823                         ret = p2p_supported_freq(wpa_s->global->p2p, freq);
4824                 else
4825                         ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
4826                 if (!ret) {
4827                         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
4828                             ieee80211_is_dfs(freq)) {
4829                                 /*
4830                                  * If freq is a DFS channel and DFS is offloaded
4831                                  * to the driver, allow P2P GO to use it.
4832                                  */
4833                                 wpa_printf(MSG_DEBUG,
4834                                            "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver",
4835                                            freq);
4836                         } else {
4837                                 wpa_printf(MSG_DEBUG,
4838                                            "P2P: The forced channel (%u MHz) is not supported for P2P uses",
4839                                            freq);
4840                                 res = -3;
4841                                 goto exit_free;
4842                         }
4843                 }
4844
4845                 for (i = 0; i < num; i++) {
4846                         if (freqs[i].freq == freq)
4847                                 freq_in_use = 1;
4848                 }
4849
4850                 if (num_unused <= 0 && !freq_in_use) {
4851                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
4852                                    freq);
4853                         res = -2;
4854                         goto exit_free;
4855                 }
4856                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
4857                            "requested channel (%u MHz)", freq);
4858                 *force_freq = freq;
4859                 goto exit_ok;
4860         }
4861
4862         best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
4863
4864         /* We have a candidate frequency to use */
4865         if (best_freq > 0) {
4866                 if (*pref_freq == 0 && num_unused > 0) {
4867                         wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
4868                                    best_freq);
4869                         *pref_freq = best_freq;
4870                 } else {
4871                         wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
4872                                    best_freq);
4873                         *force_freq = best_freq;
4874                 }
4875         } else if (num_unused > 0) {
4876                 wpa_printf(MSG_DEBUG,
4877                            "P2P: Current operating channels are not available for P2P. Try to use another channel");
4878                 *force_freq = 0;
4879         } else {
4880                 wpa_printf(MSG_DEBUG,
4881                            "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
4882                 res = -2;
4883                 goto exit_free;
4884         }
4885
4886 exit_ok:
4887         res = 0;
4888 exit_free:
4889         os_free(freqs);
4890         return res;
4891 }
4892
4893
4894 /**
4895  * wpas_p2p_connect - Request P2P Group Formation to be started
4896  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4897  * @peer_addr: Address of the peer P2P Device
4898  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
4899  * @persistent_group: Whether to create a persistent group
4900  * @auto_join: Whether to select join vs. GO Negotiation automatically
4901  * @join: Whether to join an existing group (as a client) instead of starting
4902  *      Group Owner negotiation; @peer_addr is BSSID in that case
4903  * @auth: Whether to only authorize the connection instead of doing that and
4904  *      initiating Group Owner negotiation
4905  * @go_intent: GO Intent or -1 to use default
4906  * @freq: Frequency for the group or 0 for auto-selection
4907  * @persistent_id: Persistent group credentials to use for forcing GO
4908  *      parameters or -1 to generate new values (SSID/passphrase)
4909  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
4910  *      interoperability workaround when initiating group formation
4911  * @ht40: Start GO with 40 MHz channel width
4912  * @vht:  Start GO with VHT support
4913  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
4914  *      failure, -2 on failure due to channel not currently available,
4915  *      -3 if forced channel is not supported
4916  */
4917 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4918                      const char *pin, enum p2p_wps_method wps_method,
4919                      int persistent_group, int auto_join, int join, int auth,
4920                      int go_intent, int freq, int persistent_id, int pd,
4921                      int ht40, int vht)
4922 {
4923         int force_freq = 0, pref_freq = 0;
4924         int ret = 0, res;
4925         enum wpa_driver_if_type iftype;
4926         const u8 *if_addr;
4927         struct wpa_ssid *ssid = NULL;
4928
4929         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4930                 return -1;
4931
4932         if (persistent_id >= 0) {
4933                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
4934                 if (ssid == NULL || ssid->disabled != 2 ||
4935                     ssid->mode != WPAS_MODE_P2P_GO)
4936                         return -1;
4937         }
4938
4939         os_free(wpa_s->global->add_psk);
4940         wpa_s->global->add_psk = NULL;
4941
4942         wpa_s->global->p2p_fail_on_wps_complete = 0;
4943         wpa_s->global->pending_p2ps_group = 0;
4944
4945         if (go_intent < 0)
4946                 go_intent = wpa_s->conf->p2p_go_intent;
4947
4948         if (!auth)
4949                 wpa_s->p2p_long_listen = 0;
4950
4951         wpa_s->p2p_wps_method = wps_method;
4952         wpa_s->p2p_persistent_group = !!persistent_group;
4953         wpa_s->p2p_persistent_id = persistent_id;
4954         wpa_s->p2p_go_intent = go_intent;
4955         wpa_s->p2p_connect_freq = freq;
4956         wpa_s->p2p_fallback_to_go_neg = 0;
4957         wpa_s->p2p_pd_before_go_neg = !!pd;
4958         wpa_s->p2p_go_ht40 = !!ht40;
4959         wpa_s->p2p_go_vht = !!vht;
4960
4961         if (pin)
4962                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
4963         else if (wps_method == WPS_PIN_DISPLAY) {
4964                 ret = wps_generate_pin();
4965                 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin),
4966                                   "%08d", ret);
4967                 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res))
4968                         wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0';
4969                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
4970                            wpa_s->p2p_pin);
4971         } else
4972                 wpa_s->p2p_pin[0] = '\0';
4973
4974         if (join || auto_join) {
4975                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
4976                 if (auth) {
4977                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
4978                                    "connect a running group from " MACSTR,
4979                                    MAC2STR(peer_addr));
4980                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
4981                         return ret;
4982                 }
4983                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
4984                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
4985                                            iface_addr) < 0) {
4986                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
4987                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
4988                                          dev_addr);
4989                 }
4990                 if (auto_join) {
4991                         os_get_reltime(&wpa_s->p2p_auto_started);
4992                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
4993                                    "%ld.%06ld",
4994                                    wpa_s->p2p_auto_started.sec,
4995                                    wpa_s->p2p_auto_started.usec);
4996                 }
4997                 wpa_s->user_initiated_pd = 1;
4998                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
4999                                   auto_join, freq, NULL, 0) < 0)
5000                         return -1;
5001                 return ret;
5002         }
5003
5004         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5005                                    go_intent == 15);
5006         if (res)
5007                 return res;
5008         wpas_p2p_set_own_freq_preference(wpa_s,
5009                                          force_freq ? force_freq : pref_freq);
5010
5011         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
5012
5013         if (wpa_s->create_p2p_iface) {
5014                 /* Prepare to add a new interface for the group */
5015                 iftype = WPA_IF_P2P_GROUP;
5016                 if (go_intent == 15)
5017                         iftype = WPA_IF_P2P_GO;
5018                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
5019                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
5020                                    "interface for the group");
5021                         return -1;
5022                 }
5023
5024                 if_addr = wpa_s->pending_interface_addr;
5025         } else
5026                 if_addr = wpa_s->own_addr;
5027
5028         if (auth) {
5029                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
5030                                          go_intent, if_addr,
5031                                          force_freq, persistent_group, ssid,
5032                                          pref_freq) < 0)
5033                         return -1;
5034                 return ret;
5035         }
5036
5037         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
5038                                   go_intent, if_addr, force_freq,
5039                                   persistent_group, ssid, pref_freq) < 0) {
5040                 if (wpa_s->create_p2p_iface)
5041                         wpas_p2p_remove_pending_group_interface(wpa_s);
5042                 return -1;
5043         }
5044         return ret;
5045 }
5046
5047
5048 /**
5049  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
5050  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5051  * @freq: Frequency of the channel in MHz
5052  * @duration: Duration of the stay on the channel in milliseconds
5053  *
5054  * This callback is called when the driver indicates that it has started the
5055  * requested remain-on-channel duration.
5056  */
5057 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5058                                    unsigned int freq, unsigned int duration)
5059 {
5060         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5061                 return;
5062         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)",
5063                    wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5064                    wpa_s->roc_waiting_drv_freq, freq, duration);
5065         if (wpa_s->off_channel_freq &&
5066             wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
5067                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
5068                               wpa_s->pending_listen_duration);
5069                 wpa_s->pending_listen_freq = 0;
5070         } else {
5071                 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
5072                            wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5073                            freq, duration);
5074         }
5075 }
5076
5077
5078 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout)
5079 {
5080         /* Limit maximum Listen state time based on driver limitation. */
5081         if (timeout > wpa_s->max_remain_on_chan)
5082                 timeout = wpa_s->max_remain_on_chan;
5083
5084         return p2p_listen(wpa_s->global->p2p, timeout);
5085 }
5086
5087
5088 /**
5089  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
5090  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5091  * @freq: Frequency of the channel in MHz
5092  *
5093  * This callback is called when the driver indicates that a remain-on-channel
5094  * operation has been completed, i.e., the duration on the requested channel
5095  * has timed out.
5096  */
5097 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5098                                           unsigned int freq)
5099 {
5100         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
5101                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
5102                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
5103         wpas_p2p_listen_work_done(wpa_s);
5104         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5105                 return;
5106         if (wpa_s->p2p_long_listen > 0)
5107                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
5108         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
5109                 return; /* P2P module started a new operation */
5110         if (offchannel_pending_action_tx(wpa_s))
5111                 return;
5112         if (wpa_s->p2p_long_listen > 0) {
5113                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
5114                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
5115         } else {
5116                 /*
5117                  * When listen duration is over, stop listen & update p2p_state
5118                  * to IDLE.
5119                  */
5120                 p2p_stop_listen(wpa_s->global->p2p);
5121         }
5122 }
5123
5124
5125 /**
5126  * wpas_p2p_group_remove - Remove a P2P group
5127  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5128  * @ifname: Network interface name of the group interface or "*" to remove all
5129  *      groups
5130  * Returns: 0 on success, -1 on failure
5131  *
5132  * This function is used to remove a P2P group. This can be used to disconnect
5133  * from a group in which the local end is a P2P Client or to end a P2P Group in
5134  * case the local end is the Group Owner. If a virtual network interface was
5135  * created for this group, that interface will be removed. Otherwise, only the
5136  * configured P2P group network will be removed from the interface.
5137  */
5138 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
5139 {
5140         struct wpa_global *global = wpa_s->global;
5141         struct wpa_supplicant *calling_wpa_s = wpa_s;
5142
5143         if (os_strcmp(ifname, "*") == 0) {
5144                 struct wpa_supplicant *prev;
5145                 wpa_s = global->ifaces;
5146                 while (wpa_s) {
5147                         prev = wpa_s;
5148                         wpa_s = wpa_s->next;
5149                         if (prev->p2p_group_interface !=
5150                             NOT_P2P_GROUP_INTERFACE ||
5151                             (prev->current_ssid &&
5152                              prev->current_ssid->p2p_group))
5153                                 wpas_p2p_disconnect_safely(prev, calling_wpa_s);
5154                 }
5155                 return 0;
5156         }
5157
5158         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5159                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5160                         break;
5161         }
5162
5163         return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s);
5164 }
5165
5166
5167 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
5168 {
5169         unsigned int r;
5170
5171         if (freq == 2) {
5172                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
5173                            "band");
5174                 if (wpa_s->best_24_freq > 0 &&
5175                     p2p_supported_freq_go(wpa_s->global->p2p,
5176                                           wpa_s->best_24_freq)) {
5177                         freq = wpa_s->best_24_freq;
5178                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
5179                                    "channel: %d MHz", freq);
5180                 } else {
5181                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5182                                 return -1;
5183                         freq = 2412 + (r % 3) * 25;
5184                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
5185                                    "channel: %d MHz", freq);
5186                 }
5187         }
5188
5189         if (freq == 5) {
5190                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
5191                            "band");
5192                 if (wpa_s->best_5_freq > 0 &&
5193                     p2p_supported_freq_go(wpa_s->global->p2p,
5194                                        wpa_s->best_5_freq)) {
5195                         freq = wpa_s->best_5_freq;
5196                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
5197                                    "channel: %d MHz", freq);
5198                 } else {
5199                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5200                                 return -1;
5201                         freq = 5180 + (r % 4) * 20;
5202                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5203                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
5204                                            "5 GHz channel for P2P group");
5205                                 return -1;
5206                         }
5207                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
5208                                    "channel: %d MHz", freq);
5209                 }
5210         }
5211
5212         if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5213                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5214                     ieee80211_is_dfs(freq)) {
5215                         /*
5216                          * If freq is a DFS channel and DFS is offloaded to the
5217                          * driver, allow P2P GO to use it.
5218                          */
5219                         wpa_printf(MSG_DEBUG, "P2P: "
5220                                    "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded",
5221                                    __func__, freq);
5222                         return freq;
5223                 }
5224                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
5225                            "(%u MHz) is not supported for P2P uses",
5226                            freq);
5227                 return -1;
5228         }
5229
5230         return freq;
5231 }
5232
5233
5234 static int wpas_p2p_select_freq_no_pref(struct wpa_supplicant *wpa_s,
5235                                         struct p2p_go_neg_results *params,
5236                                         const struct p2p_channels *channels)
5237 {
5238         unsigned int i, r;
5239
5240         /* first try some random selection of the social channels */
5241         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5242                 return -1;
5243
5244         for (i = 0; i < 3; i++) {
5245                 params->freq = 2412 + ((r + i) % 3) * 25;
5246                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5247                     freq_included(channels, params->freq) &&
5248                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5249                         goto out;
5250         }
5251
5252         /* try all channels in reg. class 81 */
5253         for (i = 0; i < 11; i++) {
5254                 params->freq = 2412 + i * 5;
5255                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5256                     freq_included(channels, params->freq) &&
5257                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5258                         goto out;
5259         }
5260
5261         /* try all channels in operating class 115 */
5262         for (i = 0; i < 4; i++) {
5263                 params->freq = 5180 + i * 20;
5264                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5265                     freq_included(channels, params->freq) &&
5266                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5267                         goto out;
5268         }
5269
5270         /* try all channels in operating class 124 */
5271         for (i = 0; i < 4; i++) {
5272                 params->freq = 5745 + i * 20;
5273                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5274                     freq_included(channels, params->freq) &&
5275                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5276                         goto out;
5277         }
5278
5279         /* try social channel class 180 channel 2 */
5280         params->freq = 58320 + 1 * 2160;
5281         if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5282             freq_included(channels, params->freq) &&
5283             p2p_supported_freq(wpa_s->global->p2p, params->freq))
5284                 goto out;
5285
5286         /* try all channels in reg. class 180 */
5287         for (i = 0; i < 4; i++) {
5288                 params->freq = 58320 + i * 2160;
5289                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5290                     freq_included(channels, params->freq) &&
5291                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5292                         goto out;
5293         }
5294
5295         wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed");
5296         return -1;
5297 out:
5298         wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)",
5299                    params->freq);
5300         return 0;
5301 }
5302
5303
5304 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
5305                                    struct p2p_go_neg_results *params,
5306                                    int freq, int ht40, int vht,
5307                                    const struct p2p_channels *channels)
5308 {
5309         struct wpa_used_freq_data *freqs;
5310         unsigned int pref_freq, cand_freq;
5311         unsigned int num, i;
5312
5313         os_memset(params, 0, sizeof(*params));
5314         params->role_go = 1;
5315         params->ht40 = ht40;
5316         params->vht = vht;
5317         if (freq) {
5318                 if (!freq_included(channels, freq)) {
5319                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
5320                                    "accepted", freq);
5321                         return -1;
5322                 }
5323                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced "
5324                            "frequency %d MHz", freq);
5325                 params->freq = freq;
5326         } else if (wpa_s->conf->p2p_oper_reg_class == 81 &&
5327                    wpa_s->conf->p2p_oper_channel >= 1 &&
5328                    wpa_s->conf->p2p_oper_channel <= 11 &&
5329                    freq_included(channels,
5330                                  2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
5331                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
5332                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5333                            "frequency %d MHz", params->freq);
5334         } else if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
5335                     wpa_s->conf->p2p_oper_reg_class == 116 ||
5336                     wpa_s->conf->p2p_oper_reg_class == 117 ||
5337                     wpa_s->conf->p2p_oper_reg_class == 124 ||
5338                     wpa_s->conf->p2p_oper_reg_class == 125 ||
5339                     wpa_s->conf->p2p_oper_reg_class == 126 ||
5340                     wpa_s->conf->p2p_oper_reg_class == 127) &&
5341                    freq_included(channels,
5342                                  5000 + 5 * wpa_s->conf->p2p_oper_channel)) {
5343                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
5344                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5345                            "frequency %d MHz", params->freq);
5346         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5347                    wpa_s->best_overall_freq > 0 &&
5348                    p2p_supported_freq_go(wpa_s->global->p2p,
5349                                          wpa_s->best_overall_freq) &&
5350                    freq_included(channels, wpa_s->best_overall_freq)) {
5351                 params->freq = wpa_s->best_overall_freq;
5352                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
5353                            "channel %d MHz", params->freq);
5354         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5355                    wpa_s->best_24_freq > 0 &&
5356                    p2p_supported_freq_go(wpa_s->global->p2p,
5357                                          wpa_s->best_24_freq) &&
5358                    freq_included(channels, wpa_s->best_24_freq)) {
5359                 params->freq = wpa_s->best_24_freq;
5360                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
5361                            "channel %d MHz", params->freq);
5362         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5363                    wpa_s->best_5_freq > 0 &&
5364                    p2p_supported_freq_go(wpa_s->global->p2p,
5365                                          wpa_s->best_5_freq) &&
5366                    freq_included(channels, wpa_s->best_5_freq)) {
5367                 params->freq = wpa_s->best_5_freq;
5368                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
5369                            "channel %d MHz", params->freq);
5370         } else if ((pref_freq = p2p_get_pref_freq(wpa_s->global->p2p,
5371                                                   channels))) {
5372                 params->freq = pref_freq;
5373                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
5374                            "channels", params->freq);
5375         } else {
5376                 /* no preference, select some channel */
5377                 if (wpas_p2p_select_freq_no_pref(wpa_s, params, channels) < 0)
5378                         return -1;
5379         }
5380
5381         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5382                           sizeof(struct wpa_used_freq_data));
5383         if (!freqs)
5384                 return -1;
5385
5386         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5387                                         wpa_s->num_multichan_concurrent);
5388
5389         cand_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5390
5391         /* First try the best used frequency if possible */
5392         if (!freq && cand_freq > 0 && freq_included(channels, cand_freq)) {
5393                 params->freq = cand_freq;
5394         } else if (!freq) {
5395                 /* Try any of the used frequencies */
5396                 for (i = 0; i < num; i++) {
5397                         if (freq_included(channels, freqs[i].freq)) {
5398                                 wpa_printf(MSG_DEBUG, "P2P: Force GO on a channel we are already using (%u MHz)",
5399                                            freqs[i].freq);
5400                                 params->freq = freqs[i].freq;
5401                                 break;
5402                         }
5403                 }
5404
5405                 if (i == num) {
5406                         if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5407                                 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using");
5408                                 os_free(freqs);
5409                                 return -1;
5410                         } else {
5411                                 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using. Use one of the free channels");
5412                         }
5413                 }
5414         } else {
5415                 for (i = 0; i < num; i++) {
5416                         if (freqs[i].freq == freq)
5417                                 break;
5418                 }
5419
5420                 if (i == num) {
5421                         if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5422                                 if (freq)
5423                                         wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on freq (%u MHz) as all the channels are in use", freq);
5424                                 os_free(freqs);
5425                                 return -1;
5426                         } else {
5427                                 wpa_printf(MSG_DEBUG, "P2P: Use one of the free channels");
5428                         }
5429                 }
5430         }
5431
5432         os_free(freqs);
5433         return 0;
5434 }
5435
5436
5437 static struct wpa_supplicant *
5438 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
5439                          int go)
5440 {
5441         struct wpa_supplicant *group_wpa_s;
5442
5443         if (!wpas_p2p_create_iface(wpa_s)) {
5444                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
5445                         "operations");
5446                 wpa_s->p2p_first_connection_timeout = 0;
5447                 return wpa_s;
5448         }
5449
5450         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
5451                                          WPA_IF_P2P_CLIENT) < 0) {
5452                 wpa_msg_global(wpa_s, MSG_ERROR,
5453                                "P2P: Failed to add group interface");
5454                 return NULL;
5455         }
5456         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
5457         if (group_wpa_s == NULL) {
5458                 wpa_msg_global(wpa_s, MSG_ERROR,
5459                                "P2P: Failed to initialize group interface");
5460                 wpas_p2p_remove_pending_group_interface(wpa_s);
5461                 return NULL;
5462         }
5463
5464         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
5465                 group_wpa_s->ifname);
5466         group_wpa_s->p2p_first_connection_timeout = 0;
5467         return group_wpa_s;
5468 }
5469
5470
5471 /**
5472  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
5473  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5474  * @persistent_group: Whether to create a persistent group
5475  * @freq: Frequency for the group or 0 to indicate no hardcoding
5476  * @ht40: Start GO with 40 MHz channel width
5477  * @vht:  Start GO with VHT support
5478  * Returns: 0 on success, -1 on failure
5479  *
5480  * This function creates a new P2P group with the local end as the Group Owner,
5481  * i.e., without using Group Owner Negotiation.
5482  */
5483 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
5484                        int freq, int ht40, int vht)
5485 {
5486         struct p2p_go_neg_results params;
5487
5488         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5489                 return -1;
5490
5491         os_free(wpa_s->global->add_psk);
5492         wpa_s->global->add_psk = NULL;
5493
5494         /* Make sure we are not running find during connection establishment */
5495         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
5496         wpas_p2p_stop_find_oper(wpa_s);
5497
5498         freq = wpas_p2p_select_go_freq(wpa_s, freq);
5499         if (freq < 0)
5500                 return -1;
5501
5502         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, NULL))
5503                 return -1;
5504         if (params.freq &&
5505             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
5506                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5507                     ieee80211_is_dfs(params.freq)) {
5508                         /*
5509                          * If freq is a DFS channel and DFS is offloaded to the
5510                          * driver, allow P2P GO to use it.
5511                          */
5512                         wpa_printf(MSG_DEBUG,
5513                                    "P2P: %s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to driver",
5514                                 __func__, params.freq);
5515                 } else {
5516                         wpa_printf(MSG_DEBUG,
5517                                    "P2P: The selected channel for GO (%u MHz) is not supported for P2P uses",
5518                                    params.freq);
5519                         return -1;
5520                 }
5521         }
5522         p2p_go_params(wpa_s->global->p2p, &params);
5523         params.persistent_group = persistent_group;
5524
5525         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
5526         if (wpa_s == NULL)
5527                 return -1;
5528         wpas_start_wps_go(wpa_s, &params, 0);
5529
5530         return 0;
5531 }
5532
5533
5534 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
5535                                  struct wpa_ssid *params, int addr_allocated,
5536                                  int freq)
5537 {
5538         struct wpa_ssid *ssid;
5539
5540         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
5541         if (wpa_s == NULL)
5542                 return -1;
5543         wpa_s->p2p_last_4way_hs_fail = NULL;
5544
5545         wpa_supplicant_ap_deinit(wpa_s);
5546
5547         ssid = wpa_config_add_network(wpa_s->conf);
5548         if (ssid == NULL)
5549                 return -1;
5550         wpa_config_set_network_defaults(ssid);
5551         ssid->temporary = 1;
5552         ssid->proto = WPA_PROTO_RSN;
5553         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
5554         ssid->group_cipher = WPA_CIPHER_CCMP;
5555         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
5556         ssid->ssid = os_malloc(params->ssid_len);
5557         if (ssid->ssid == NULL) {
5558                 wpa_config_remove_network(wpa_s->conf, ssid->id);
5559                 return -1;
5560         }
5561         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
5562         ssid->ssid_len = params->ssid_len;
5563         ssid->p2p_group = 1;
5564         ssid->export_keys = 1;
5565         if (params->psk_set) {
5566                 os_memcpy(ssid->psk, params->psk, 32);
5567                 ssid->psk_set = 1;
5568         }
5569         if (params->passphrase)
5570                 ssid->passphrase = os_strdup(params->passphrase);
5571
5572         wpa_s->show_group_started = 1;
5573         wpa_s->p2p_in_invitation = 1;
5574         wpa_s->p2p_invite_go_freq = freq;
5575
5576         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5577                              NULL);
5578         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5579                                wpas_p2p_group_formation_timeout,
5580                                wpa_s->parent, NULL);
5581         wpa_supplicant_select_network(wpa_s, ssid);
5582
5583         return 0;
5584 }
5585
5586
5587 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
5588                                   struct wpa_ssid *ssid, int addr_allocated,
5589                                   int force_freq, int neg_freq, int ht40,
5590                                   int vht, const struct p2p_channels *channels,
5591                                   int connection_timeout)
5592 {
5593         struct p2p_go_neg_results params;
5594         int go = 0, freq;
5595
5596         if (ssid->disabled != 2 || ssid->ssid == NULL)
5597                 return -1;
5598
5599         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
5600             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
5601                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
5602                            "already running");
5603                 if (go == 0 &&
5604                     eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5605                                          wpa_s->parent, NULL)) {
5606                         /*
5607                          * This can happen if Invitation Response frame was lost
5608                          * and the peer (GO of a persistent group) tries to
5609                          * invite us again. Reschedule the timeout to avoid
5610                          * terminating the wait for the connection too early
5611                          * since we now know that the peer is still trying to
5612                          * invite us instead of having already started the GO.
5613                          */
5614                         wpa_printf(MSG_DEBUG,
5615                                    "P2P: Reschedule group formation timeout since peer is still trying to invite us");
5616                         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5617                                                wpas_p2p_group_formation_timeout,
5618                                                wpa_s->parent, NULL);
5619                 }
5620                 return 0;
5621         }
5622
5623         os_free(wpa_s->global->add_psk);
5624         wpa_s->global->add_psk = NULL;
5625
5626         /* Make sure we are not running find during connection establishment */
5627         wpas_p2p_stop_find_oper(wpa_s);
5628
5629         wpa_s->p2p_fallback_to_go_neg = 0;
5630
5631         if (ssid->mode == WPAS_MODE_P2P_GO) {
5632                 if (force_freq > 0) {
5633                         freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
5634                         if (freq < 0)
5635                                 return -1;
5636                 } else {
5637                         freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
5638                         if (freq < 0 ||
5639                             (freq > 0 && !freq_included(channels, freq)))
5640                                 freq = 0;
5641                 }
5642         } else if (ssid->mode == WPAS_MODE_INFRA) {
5643                 freq = neg_freq;
5644                 if (freq <= 0 || !freq_included(channels, freq)) {
5645                         struct os_reltime now;
5646                         struct wpa_bss *bss =
5647                                 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid);
5648
5649                         os_get_reltime(&now);
5650                         if (bss &&
5651                             !os_reltime_expired(&now, &bss->last_update, 5) &&
5652                             freq_included(channels, bss->freq))
5653                                 freq = bss->freq;
5654                         else
5655                                 freq = 0;
5656                 }
5657
5658                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq);
5659         } else {
5660                 return -1;
5661         }
5662
5663         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, channels))
5664                 return -1;
5665
5666         params.role_go = 1;
5667         params.psk_set = ssid->psk_set;
5668         if (params.psk_set)
5669                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
5670         if (ssid->passphrase) {
5671                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
5672                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
5673                                    "persistent group");
5674                         return -1;
5675                 }
5676                 os_strlcpy(params.passphrase, ssid->passphrase,
5677                            sizeof(params.passphrase));
5678         }
5679         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
5680         params.ssid_len = ssid->ssid_len;
5681         params.persistent_group = 1;
5682
5683         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
5684         if (wpa_s == NULL)
5685                 return -1;
5686
5687         p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS);
5688
5689         wpa_s->p2p_first_connection_timeout = connection_timeout;
5690         wpas_start_wps_go(wpa_s, &params, 0);
5691
5692         return 0;
5693 }
5694
5695
5696 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
5697                                struct wpabuf *proberesp_ies)
5698 {
5699         struct wpa_supplicant *wpa_s = ctx;
5700         if (wpa_s->ap_iface) {
5701                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
5702                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
5703                         wpabuf_free(beacon_ies);
5704                         wpabuf_free(proberesp_ies);
5705                         return;
5706                 }
5707                 if (beacon_ies) {
5708                         wpabuf_free(hapd->p2p_beacon_ie);
5709                         hapd->p2p_beacon_ie = beacon_ies;
5710                 }
5711                 wpabuf_free(hapd->p2p_probe_resp_ie);
5712                 hapd->p2p_probe_resp_ie = proberesp_ies;
5713         } else {
5714                 wpabuf_free(beacon_ies);
5715                 wpabuf_free(proberesp_ies);
5716         }
5717         wpa_supplicant_ap_update_beacon(wpa_s);
5718 }
5719
5720
5721 static void wpas_p2p_idle_update(void *ctx, int idle)
5722 {
5723         struct wpa_supplicant *wpa_s = ctx;
5724         if (!wpa_s->ap_iface)
5725                 return;
5726         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
5727         if (idle) {
5728                 if (wpa_s->global->p2p_fail_on_wps_complete &&
5729                     wpa_s->p2p_in_provisioning) {
5730                         wpas_p2p_grpform_fail_after_wps(wpa_s);
5731                         return;
5732                 }
5733                 wpas_p2p_set_group_idle_timeout(wpa_s);
5734         } else
5735                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
5736 }
5737
5738
5739 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
5740                                        struct wpa_ssid *ssid)
5741 {
5742         struct p2p_group *group;
5743         struct p2p_group_config *cfg;
5744
5745         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5746                 return NULL;
5747
5748         cfg = os_zalloc(sizeof(*cfg));
5749         if (cfg == NULL)
5750                 return NULL;
5751
5752         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
5753                 cfg->persistent_group = 2;
5754         else if (ssid->p2p_persistent_group)
5755                 cfg->persistent_group = 1;
5756         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
5757         if (wpa_s->max_stations &&
5758             wpa_s->max_stations < wpa_s->conf->max_num_sta)
5759                 cfg->max_clients = wpa_s->max_stations;
5760         else
5761                 cfg->max_clients = wpa_s->conf->max_num_sta;
5762         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
5763         cfg->ssid_len = ssid->ssid_len;
5764         cfg->freq = ssid->frequency;
5765         cfg->cb_ctx = wpa_s;
5766         cfg->ie_update = wpas_p2p_ie_update;
5767         cfg->idle_update = wpas_p2p_idle_update;
5768
5769         group = p2p_group_init(wpa_s->global->p2p, cfg);
5770         if (group == NULL)
5771                 os_free(cfg);
5772         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
5773                 p2p_group_notif_formation_done(group);
5774         wpa_s->p2p_group = group;
5775         return group;
5776 }
5777
5778
5779 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5780                           int registrar)
5781 {
5782         struct wpa_ssid *ssid = wpa_s->current_ssid;
5783
5784         if (!wpa_s->p2p_in_provisioning) {
5785                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
5786                            "provisioning not in progress");
5787                 return;
5788         }
5789
5790         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
5791                 u8 go_dev_addr[ETH_ALEN];
5792                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
5793                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
5794                                           ssid->ssid_len);
5795                 /* Clear any stored provisioning info */
5796                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
5797         }
5798
5799         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5800                              NULL);
5801         wpa_s->p2p_go_group_formation_completed = 1;
5802         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
5803                 /*
5804                  * Use a separate timeout for initial data connection to
5805                  * complete to allow the group to be removed automatically if
5806                  * something goes wrong in this step before the P2P group idle
5807                  * timeout mechanism is taken into use.
5808                  */
5809                 wpa_dbg(wpa_s, MSG_DEBUG,
5810                         "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
5811                         P2P_MAX_INITIAL_CONN_WAIT);
5812                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5813                                        wpas_p2p_group_formation_timeout,
5814                                        wpa_s->parent, NULL);
5815         } else if (ssid) {
5816                 /*
5817                  * Use a separate timeout for initial data connection to
5818                  * complete to allow the group to be removed automatically if
5819                  * the client does not complete data connection successfully.
5820                  */
5821                 wpa_dbg(wpa_s, MSG_DEBUG,
5822                         "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
5823                         P2P_MAX_INITIAL_CONN_WAIT_GO);
5824                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
5825                                        wpas_p2p_group_formation_timeout,
5826                                        wpa_s->parent, NULL);
5827                 /*
5828                  * Complete group formation on first successful data connection
5829                  */
5830                 wpa_s->p2p_go_group_formation_completed = 0;
5831         }
5832         if (wpa_s->global->p2p)
5833                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
5834         wpas_group_formation_completed(wpa_s, 1, 0);
5835 }
5836
5837
5838 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
5839                          struct wps_event_fail *fail)
5840 {
5841         if (!wpa_s->p2p_in_provisioning) {
5842                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
5843                            "provisioning not in progress");
5844                 return;
5845         }
5846
5847         if (wpa_s->go_params) {
5848                 p2p_clear_provisioning_info(
5849                         wpa_s->global->p2p,
5850                         wpa_s->go_params->peer_device_addr);
5851         }
5852
5853         wpas_notify_p2p_wps_failed(wpa_s, fail);
5854
5855         if (wpa_s == wpa_s->global->p2p_group_formation) {
5856                 /*
5857                  * Allow some time for the failed WPS negotiation exchange to
5858                  * complete, but remove the group since group formation cannot
5859                  * succeed after provisioning failure.
5860                  */
5861                 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
5862                 wpa_s->global->p2p_fail_on_wps_complete = 1;
5863                 eloop_deplete_timeout(0, 50000,
5864                                       wpas_p2p_group_formation_timeout,
5865                                       wpa_s->parent, NULL);
5866         }
5867 }
5868
5869
5870 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
5871 {
5872         if (!wpa_s->global->p2p_fail_on_wps_complete ||
5873             !wpa_s->p2p_in_provisioning)
5874                 return 0;
5875
5876         wpas_p2p_grpform_fail_after_wps(wpa_s);
5877
5878         return 1;
5879 }
5880
5881
5882 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5883                        const char *config_method,
5884                        enum wpas_p2p_prov_disc_use use,
5885                        struct p2ps_provision *p2ps_prov)
5886 {
5887         u16 config_methods;
5888
5889         wpa_s->global->pending_p2ps_group = 0;
5890         wpa_s->p2p_fallback_to_go_neg = 0;
5891         wpa_s->pending_pd_use = NORMAL_PD;
5892         if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) {
5893                 p2ps_prov->conncap = p2ps_group_capability(
5894                         wpa_s, P2PS_SETUP_NONE, p2ps_prov->role);
5895                 wpa_printf(MSG_DEBUG,
5896                            "P2P: %s conncap: %d - ASP parsed: %x %x %d %s",
5897                            __func__, p2ps_prov->conncap,
5898                            p2ps_prov->adv_id, p2ps_prov->conncap,
5899                            p2ps_prov->status, p2ps_prov->info);
5900
5901                 config_methods = 0;
5902         } else if (os_strncmp(config_method, "display", 7) == 0)
5903                 config_methods = WPS_CONFIG_DISPLAY;
5904         else if (os_strncmp(config_method, "keypad", 6) == 0)
5905                 config_methods = WPS_CONFIG_KEYPAD;
5906         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
5907                  os_strncmp(config_method, "pushbutton", 10) == 0)
5908                 config_methods = WPS_CONFIG_PUSHBUTTON;
5909         else {
5910                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
5911                 os_free(p2ps_prov);
5912                 return -1;
5913         }
5914
5915         if (use == WPAS_P2P_PD_AUTO) {
5916                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
5917                 wpa_s->pending_pd_config_methods = config_methods;
5918                 wpa_s->p2p_auto_pd = 1;
5919                 wpa_s->p2p_auto_join = 0;
5920                 wpa_s->pending_pd_before_join = 0;
5921                 wpa_s->auto_pd_scan_retry = 0;
5922                 wpas_p2p_stop_find(wpa_s);
5923                 wpa_s->p2p_join_scan_count = 0;
5924                 os_get_reltime(&wpa_s->p2p_auto_started);
5925                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
5926                            wpa_s->p2p_auto_started.sec,
5927                            wpa_s->p2p_auto_started.usec);
5928                 wpas_p2p_join_scan(wpa_s, NULL);
5929                 return 0;
5930         }
5931
5932         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) {
5933                 os_free(p2ps_prov);
5934                 return -1;
5935         }
5936
5937         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov,
5938                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
5939                                  0, 1);
5940 }
5941
5942
5943 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
5944                               char *end)
5945 {
5946         return p2p_scan_result_text(ies, ies_len, buf, end);
5947 }
5948
5949
5950 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
5951 {
5952         if (!offchannel_pending_action_tx(wpa_s))
5953                 return;
5954
5955         wpas_p2p_action_tx_clear(wpa_s);
5956
5957         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
5958                    "operation request");
5959         offchannel_clear_pending_action_tx(wpa_s);
5960 }
5961
5962
5963 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
5964                   enum p2p_discovery_type type,
5965                   unsigned int num_req_dev_types, const u8 *req_dev_types,
5966                   const u8 *dev_id, unsigned int search_delay,
5967                   u8 seek_cnt, const char **seek_string, int freq)
5968 {
5969         wpas_p2p_clear_pending_action_tx(wpa_s);
5970         wpa_s->p2p_long_listen = 0;
5971
5972         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
5973             wpa_s->p2p_in_provisioning)
5974                 return -1;
5975
5976         wpa_supplicant_cancel_sched_scan(wpa_s);
5977
5978         return p2p_find(wpa_s->global->p2p, timeout, type,
5979                         num_req_dev_types, req_dev_types, dev_id,
5980                         search_delay, seek_cnt, seek_string, freq);
5981 }
5982
5983
5984 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s,
5985                                             struct wpa_scan_results *scan_res)
5986 {
5987         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
5988
5989         if (wpa_s->p2p_scan_work) {
5990                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
5991                 wpa_s->p2p_scan_work = NULL;
5992                 radio_work_done(work);
5993         }
5994
5995         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5996                 return;
5997
5998         /*
5999          * Indicate that results have been processed so that the P2P module can
6000          * continue pending tasks.
6001          */
6002         p2p_scan_res_handled(wpa_s->global->p2p);
6003 }
6004
6005
6006 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
6007 {
6008         wpas_p2p_clear_pending_action_tx(wpa_s);
6009         wpa_s->p2p_long_listen = 0;
6010         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6011         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
6012
6013         if (wpa_s->global->p2p)
6014                 p2p_stop_find(wpa_s->global->p2p);
6015
6016         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
6017                 wpa_printf(MSG_DEBUG,
6018                            "P2P: Do not consider the scan results after stop_find");
6019                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search;
6020         }
6021 }
6022
6023
6024 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
6025 {
6026         wpas_p2p_stop_find_oper(wpa_s);
6027         if (!wpa_s->global->pending_group_iface_for_p2ps)
6028                 wpas_p2p_remove_pending_group_interface(wpa_s);
6029 }
6030
6031
6032 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
6033 {
6034         struct wpa_supplicant *wpa_s = eloop_ctx;
6035         wpa_s->p2p_long_listen = 0;
6036 }
6037
6038
6039 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
6040 {
6041         int res;
6042
6043         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6044                 return -1;
6045
6046         wpa_supplicant_cancel_sched_scan(wpa_s);
6047         wpas_p2p_clear_pending_action_tx(wpa_s);
6048
6049         if (timeout == 0) {
6050                 /*
6051                  * This is a request for unlimited Listen state. However, at
6052                  * least for now, this is mapped to a Listen state for one
6053                  * hour.
6054                  */
6055                 timeout = 3600;
6056         }
6057         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6058         wpa_s->p2p_long_listen = 0;
6059
6060         /*
6061          * Stop previous find/listen operation to avoid trying to request a new
6062          * remain-on-channel operation while the driver is still running the
6063          * previous one.
6064          */
6065         if (wpa_s->global->p2p)
6066                 p2p_stop_find(wpa_s->global->p2p);
6067
6068         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
6069         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
6070                 wpa_s->p2p_long_listen = timeout * 1000;
6071                 eloop_register_timeout(timeout, 0,
6072                                        wpas_p2p_long_listen_timeout,
6073                                        wpa_s, NULL);
6074         }
6075
6076         return res;
6077 }
6078
6079
6080 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
6081                           u8 *buf, size_t len, int p2p_group)
6082 {
6083         struct wpabuf *p2p_ie;
6084         int ret;
6085
6086         if (wpa_s->global->p2p_disabled)
6087                 return -1;
6088         /*
6089          * Advertize mandatory cross connection capability even on
6090          * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP.
6091          */
6092         if (wpa_s->conf->p2p_disabled && p2p_group)
6093                 return -1;
6094         if (wpa_s->global->p2p == NULL)
6095                 return -1;
6096         if (bss == NULL)
6097                 return -1;
6098
6099         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
6100         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
6101                                p2p_group, p2p_ie);
6102         wpabuf_free(p2p_ie);
6103
6104         return ret;
6105 }
6106
6107
6108 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
6109                           const u8 *dst, const u8 *bssid,
6110                           const u8 *ie, size_t ie_len,
6111                           unsigned int rx_freq, int ssi_signal)
6112 {
6113         if (wpa_s->global->p2p_disabled)
6114                 return 0;
6115         if (wpa_s->global->p2p == NULL)
6116                 return 0;
6117
6118         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
6119                                  ie, ie_len, rx_freq)) {
6120         case P2P_PREQ_NOT_P2P:
6121                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
6122                                  ssi_signal);
6123                 /* fall through */
6124         case P2P_PREQ_MALFORMED:
6125         case P2P_PREQ_NOT_LISTEN:
6126         case P2P_PREQ_NOT_PROCESSED:
6127         default: /* make gcc happy */
6128                 return 0;
6129         case P2P_PREQ_PROCESSED:
6130                 return 1;
6131         }
6132 }
6133
6134
6135 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
6136                         const u8 *sa, const u8 *bssid,
6137                         u8 category, const u8 *data, size_t len, int freq)
6138 {
6139         if (wpa_s->global->p2p_disabled)
6140                 return;
6141         if (wpa_s->global->p2p == NULL)
6142                 return;
6143
6144         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
6145                       freq);
6146 }
6147
6148
6149 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
6150 {
6151         if (wpa_s->global->p2p_disabled)
6152                 return;
6153         if (wpa_s->global->p2p == NULL)
6154                 return;
6155
6156         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
6157 }
6158
6159
6160 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
6161 {
6162         p2p_group_deinit(wpa_s->p2p_group);
6163         wpa_s->p2p_group = NULL;
6164
6165         wpa_s->ap_configured_cb = NULL;
6166         wpa_s->ap_configured_cb_ctx = NULL;
6167         wpa_s->ap_configured_cb_data = NULL;
6168         wpa_s->connect_without_scan = NULL;
6169 }
6170
6171
6172 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
6173 {
6174         wpa_s->p2p_long_listen = 0;
6175
6176         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6177                 return -1;
6178
6179         return p2p_reject(wpa_s->global->p2p, addr);
6180 }
6181
6182
6183 /* Invite to reinvoke a persistent group */
6184 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6185                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
6186                     int ht40, int vht, int pref_freq)
6187 {
6188         enum p2p_invite_role role;
6189         u8 *bssid = NULL;
6190         int force_freq = 0;
6191         int res;
6192         int no_pref_freq_given = pref_freq == 0;
6193
6194         wpa_s->global->p2p_invite_group = NULL;
6195         if (peer_addr)
6196                 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
6197         else
6198                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
6199
6200         wpa_s->p2p_persistent_go_freq = freq;
6201         wpa_s->p2p_go_ht40 = !!ht40;
6202         if (ssid->mode == WPAS_MODE_P2P_GO) {
6203                 role = P2P_INVITE_ROLE_GO;
6204                 if (peer_addr == NULL) {
6205                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
6206                                    "address in invitation command");
6207                         return -1;
6208                 }
6209                 if (wpas_p2p_create_iface(wpa_s)) {
6210                         if (wpas_p2p_add_group_interface(wpa_s,
6211                                                          WPA_IF_P2P_GO) < 0) {
6212                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
6213                                            "allocate a new interface for the "
6214                                            "group");
6215                                 return -1;
6216                         }
6217                         bssid = wpa_s->pending_interface_addr;
6218                 } else
6219                         bssid = wpa_s->own_addr;
6220         } else {
6221                 role = P2P_INVITE_ROLE_CLIENT;
6222                 peer_addr = ssid->bssid;
6223         }
6224         wpa_s->pending_invite_ssid_id = ssid->id;
6225
6226         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6227                                    role == P2P_INVITE_ROLE_GO);
6228         if (res)
6229                 return res;
6230
6231         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6232                 return -1;
6233
6234         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
6235             no_pref_freq_given && pref_freq > 0 &&
6236             wpa_s->num_multichan_concurrent > 1 &&
6237             wpas_p2p_num_unused_channels(wpa_s) > 0) {
6238                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
6239                            pref_freq);
6240                 pref_freq = 0;
6241         }
6242
6243         /*
6244          * Stop any find/listen operations before invitation and possibly
6245          * connection establishment.
6246          */
6247         wpas_p2p_stop_find_oper(wpa_s);
6248
6249         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6250                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
6251                           1, pref_freq, -1);
6252 }
6253
6254
6255 /* Invite to join an active group */
6256 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
6257                           const u8 *peer_addr, const u8 *go_dev_addr)
6258 {
6259         struct wpa_global *global = wpa_s->global;
6260         enum p2p_invite_role role;
6261         u8 *bssid = NULL;
6262         struct wpa_ssid *ssid;
6263         int persistent;
6264         int freq = 0, force_freq = 0, pref_freq = 0;
6265         int res;
6266
6267         wpa_s->p2p_persistent_go_freq = 0;
6268         wpa_s->p2p_go_ht40 = 0;
6269         wpa_s->p2p_go_vht = 0;
6270
6271         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6272                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
6273                         break;
6274         }
6275         if (wpa_s == NULL) {
6276                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
6277                 return -1;
6278         }
6279
6280         ssid = wpa_s->current_ssid;
6281         if (ssid == NULL) {
6282                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
6283                            "invitation");
6284                 return -1;
6285         }
6286
6287         wpa_s->global->p2p_invite_group = wpa_s;
6288         persistent = ssid->p2p_persistent_group &&
6289                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
6290                                         ssid->ssid, ssid->ssid_len);
6291
6292         if (ssid->mode == WPAS_MODE_P2P_GO) {
6293                 role = P2P_INVITE_ROLE_ACTIVE_GO;
6294                 bssid = wpa_s->own_addr;
6295                 if (go_dev_addr == NULL)
6296                         go_dev_addr = wpa_s->global->p2p_dev_addr;
6297                 freq = ssid->frequency;
6298         } else {
6299                 role = P2P_INVITE_ROLE_CLIENT;
6300                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
6301                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
6302                                    "invite to current group");
6303                         return -1;
6304                 }
6305                 bssid = wpa_s->bssid;
6306                 if (go_dev_addr == NULL &&
6307                     !is_zero_ether_addr(wpa_s->go_dev_addr))
6308                         go_dev_addr = wpa_s->go_dev_addr;
6309                 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6310                         (int) wpa_s->assoc_freq;
6311         }
6312         wpa_s->parent->pending_invite_ssid_id = -1;
6313
6314         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6315                 return -1;
6316
6317         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6318                                    role == P2P_INVITE_ROLE_ACTIVE_GO);
6319         if (res)
6320                 return res;
6321         wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
6322
6323         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6324                           ssid->ssid, ssid->ssid_len, force_freq,
6325                           go_dev_addr, persistent, pref_freq, -1);
6326 }
6327
6328
6329 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
6330 {
6331         struct wpa_ssid *ssid = wpa_s->current_ssid;
6332         u8 go_dev_addr[ETH_ALEN];
6333         int network_id = -1;
6334         int persistent;
6335         int freq;
6336         u8 ip[3 * 4];
6337         char ip_addr[100];
6338
6339         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
6340                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6341                                      wpa_s->parent, NULL);
6342         }
6343
6344         if (!wpa_s->show_group_started || !ssid)
6345                 return;
6346
6347         wpa_s->show_group_started = 0;
6348
6349         os_memset(go_dev_addr, 0, ETH_ALEN);
6350         if (ssid->bssid_set)
6351                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
6352         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6353                                                ssid->ssid_len);
6354         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
6355
6356         if (wpa_s->global->p2p_group_formation == wpa_s)
6357                 wpa_s->global->p2p_group_formation = NULL;
6358
6359         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6360                 (int) wpa_s->assoc_freq;
6361
6362         ip_addr[0] = '\0';
6363         if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
6364                 int res;
6365
6366                 res = os_snprintf(ip_addr, sizeof(ip_addr),
6367                                   " ip_addr=%u.%u.%u.%u "
6368                                   "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
6369                                   ip[0], ip[1], ip[2], ip[3],
6370                                   ip[4], ip[5], ip[6], ip[7],
6371                                   ip[8], ip[9], ip[10], ip[11]);
6372                 if (os_snprintf_error(sizeof(ip_addr), res))
6373                         ip_addr[0] = '\0';
6374         }
6375
6376         wpas_p2p_group_started(wpa_s, 0, ssid, freq,
6377                                ssid->passphrase == NULL && ssid->psk_set ?
6378                                ssid->psk : NULL,
6379                                ssid->passphrase, go_dev_addr, persistent,
6380                                ip_addr);
6381
6382         if (persistent)
6383                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
6384                                                              ssid, go_dev_addr);
6385         if (network_id < 0)
6386                 network_id = ssid->id;
6387         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
6388 }
6389
6390
6391 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
6392                           u32 interval1, u32 duration2, u32 interval2)
6393 {
6394         int ret;
6395
6396         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6397                 return -1;
6398
6399         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
6400             wpa_s->current_ssid == NULL ||
6401             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
6402                 return -1;
6403
6404         ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
6405                                wpa_s->own_addr, wpa_s->assoc_freq,
6406                                duration1, interval1, duration2, interval2);
6407         if (ret == 0)
6408                 wpa_s->waiting_presence_resp = 1;
6409
6410         return ret;
6411 }
6412
6413
6414 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
6415                         unsigned int interval)
6416 {
6417         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6418                 return -1;
6419
6420         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
6421 }
6422
6423
6424 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
6425 {
6426         if (wpa_s->current_ssid == NULL) {
6427                 /*
6428                  * current_ssid can be cleared when P2P client interface gets
6429                  * disconnected, so assume this interface was used as P2P
6430                  * client.
6431                  */
6432                 return 1;
6433         }
6434         return wpa_s->current_ssid->p2p_group &&
6435                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
6436 }
6437
6438
6439 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
6440 {
6441         struct wpa_supplicant *wpa_s = eloop_ctx;
6442
6443         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
6444                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
6445                            "disabled");
6446                 return;
6447         }
6448
6449         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
6450                    "group");
6451         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
6452 }
6453
6454
6455 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
6456 {
6457         int timeout;
6458
6459         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6460                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6461
6462         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6463                 return;
6464
6465         timeout = wpa_s->conf->p2p_group_idle;
6466         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
6467             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
6468             timeout = P2P_MAX_CLIENT_IDLE;
6469
6470         if (timeout == 0)
6471                 return;
6472
6473         if (timeout < 0) {
6474                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
6475                         timeout = 0; /* special client mode no-timeout */
6476                 else
6477                         return;
6478         }
6479
6480         if (wpa_s->p2p_in_provisioning) {
6481                 /*
6482                  * Use the normal group formation timeout during the
6483                  * provisioning phase to avoid terminating this process too
6484                  * early due to group idle timeout.
6485                  */
6486                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6487                            "during provisioning");
6488                 return;
6489         }
6490
6491         if (wpa_s->show_group_started) {
6492                 /*
6493                  * Use the normal group formation timeout between the end of
6494                  * the provisioning phase and completion of 4-way handshake to
6495                  * avoid terminating this process too early due to group idle
6496                  * timeout.
6497                  */
6498                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6499                            "while waiting for initial 4-way handshake to "
6500                            "complete");
6501                 return;
6502         }
6503
6504         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
6505                    timeout);
6506         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
6507                                wpa_s, NULL);
6508 }
6509
6510
6511 /* Returns 1 if the interface was removed */
6512 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6513                           u16 reason_code, const u8 *ie, size_t ie_len,
6514                           int locally_generated)
6515 {
6516         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6517                 return 0;
6518
6519         if (!locally_generated)
6520                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6521                                  ie_len);
6522
6523         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
6524             wpa_s->current_ssid &&
6525             wpa_s->current_ssid->p2p_group &&
6526             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
6527                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
6528                            "session is ending");
6529                 if (wpas_p2p_group_delete(wpa_s,
6530                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
6531                     > 0)
6532                         return 1;
6533         }
6534
6535         return 0;
6536 }
6537
6538
6539 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6540                              u16 reason_code, const u8 *ie, size_t ie_len,
6541                              int locally_generated)
6542 {
6543         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6544                 return;
6545
6546         if (!locally_generated)
6547                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6548                                    ie_len);
6549 }
6550
6551
6552 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
6553 {
6554         struct p2p_data *p2p = wpa_s->global->p2p;
6555
6556         if (p2p == NULL)
6557                 return;
6558
6559         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
6560                 return;
6561
6562         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
6563                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
6564
6565         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
6566                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
6567
6568         if (wpa_s->wps &&
6569             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
6570                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
6571
6572         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
6573                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
6574
6575         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
6576                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
6577                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
6578                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
6579                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
6580         }
6581
6582         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
6583                 p2p_set_sec_dev_types(p2p,
6584                                       (void *) wpa_s->conf->sec_device_type,
6585                                       wpa_s->conf->num_sec_device_types);
6586
6587         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
6588                 int i;
6589                 p2p_remove_wps_vendor_extensions(p2p);
6590                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
6591                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
6592                                 continue;
6593                         p2p_add_wps_vendor_extension(
6594                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
6595                 }
6596         }
6597
6598         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
6599             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
6600                 char country[3];
6601                 country[0] = wpa_s->conf->country[0];
6602                 country[1] = wpa_s->conf->country[1];
6603                 country[2] = 0x04;
6604                 p2p_set_country(p2p, country);
6605         }
6606
6607         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
6608                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
6609                                      wpa_s->conf->p2p_ssid_postfix ?
6610                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
6611                                      0);
6612         }
6613
6614         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
6615                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
6616
6617         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
6618                 u8 reg_class, channel;
6619                 int ret;
6620                 unsigned int r;
6621                 u8 channel_forced;
6622
6623                 if (wpa_s->conf->p2p_listen_reg_class &&
6624                     wpa_s->conf->p2p_listen_channel) {
6625                         reg_class = wpa_s->conf->p2p_listen_reg_class;
6626                         channel = wpa_s->conf->p2p_listen_channel;
6627                         channel_forced = 1;
6628                 } else {
6629                         reg_class = 81;
6630                         /*
6631                          * Pick one of the social channels randomly as the
6632                          * listen channel.
6633                          */
6634                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
6635                                 channel = 1;
6636                         else
6637                                 channel = 1 + (r % 3) * 5;
6638                         channel_forced = 0;
6639                 }
6640                 ret = p2p_set_listen_channel(p2p, reg_class, channel,
6641                                              channel_forced);
6642                 if (ret)
6643                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
6644                                    "failed: %d", ret);
6645         }
6646         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
6647                 u8 op_reg_class, op_channel, cfg_op_channel;
6648                 int ret = 0;
6649                 unsigned int r;
6650                 if (wpa_s->conf->p2p_oper_reg_class &&
6651                     wpa_s->conf->p2p_oper_channel) {
6652                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
6653                         op_channel = wpa_s->conf->p2p_oper_channel;
6654                         cfg_op_channel = 1;
6655                 } else {
6656                         op_reg_class = 81;
6657                         /*
6658                          * Use random operation channel from (1, 6, 11)
6659                          *if no other preference is indicated.
6660                          */
6661                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
6662                                 op_channel = 1;
6663                         else
6664                                 op_channel = 1 + (r % 3) * 5;
6665                         cfg_op_channel = 0;
6666                 }
6667                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
6668                                            cfg_op_channel);
6669                 if (ret)
6670                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
6671                                    "failed: %d", ret);
6672         }
6673
6674         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
6675                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
6676                                       wpa_s->conf->p2p_pref_chan) < 0) {
6677                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
6678                                    "update failed");
6679                 }
6680
6681                 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
6682                         wpa_printf(MSG_ERROR, "P2P: No GO channel list "
6683                                    "update failed");
6684                 }
6685         }
6686
6687         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN)
6688                 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len);
6689 }
6690
6691
6692 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
6693                      int duration)
6694 {
6695         if (!wpa_s->ap_iface)
6696                 return -1;
6697         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
6698                                    duration);
6699 }
6700
6701
6702 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
6703 {
6704         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6705                 return -1;
6706
6707         wpa_s->global->cross_connection = enabled;
6708         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
6709
6710         if (!enabled) {
6711                 struct wpa_supplicant *iface;
6712
6713                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
6714                 {
6715                         if (iface->cross_connect_enabled == 0)
6716                                 continue;
6717
6718                         iface->cross_connect_enabled = 0;
6719                         iface->cross_connect_in_use = 0;
6720                         wpa_msg_global(iface->parent, MSG_INFO,
6721                                        P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6722                                        iface->ifname,
6723                                        iface->cross_connect_uplink);
6724                 }
6725         }
6726
6727         return 0;
6728 }
6729
6730
6731 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
6732 {
6733         struct wpa_supplicant *iface;
6734
6735         if (!uplink->global->cross_connection)
6736                 return;
6737
6738         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
6739                 if (!iface->cross_connect_enabled)
6740                         continue;
6741                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
6742                     0)
6743                         continue;
6744                 if (iface->ap_iface == NULL)
6745                         continue;
6746                 if (iface->cross_connect_in_use)
6747                         continue;
6748
6749                 iface->cross_connect_in_use = 1;
6750                 wpa_msg_global(iface->parent, MSG_INFO,
6751                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
6752                                iface->ifname, iface->cross_connect_uplink);
6753         }
6754 }
6755
6756
6757 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
6758 {
6759         struct wpa_supplicant *iface;
6760
6761         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
6762                 if (!iface->cross_connect_enabled)
6763                         continue;
6764                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
6765                     0)
6766                         continue;
6767                 if (!iface->cross_connect_in_use)
6768                         continue;
6769
6770                 wpa_msg_global(iface->parent, MSG_INFO,
6771                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6772                                iface->ifname, iface->cross_connect_uplink);
6773                 iface->cross_connect_in_use = 0;
6774         }
6775 }
6776
6777
6778 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
6779 {
6780         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
6781             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
6782             wpa_s->cross_connect_disallowed)
6783                 wpas_p2p_disable_cross_connect(wpa_s);
6784         else
6785                 wpas_p2p_enable_cross_connect(wpa_s);
6786         if (!wpa_s->ap_iface &&
6787             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6788                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6789 }
6790
6791
6792 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
6793 {
6794         wpas_p2p_disable_cross_connect(wpa_s);
6795         if (!wpa_s->ap_iface &&
6796             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
6797                                          wpa_s, NULL))
6798                 wpas_p2p_set_group_idle_timeout(wpa_s);
6799 }
6800
6801
6802 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
6803 {
6804         struct wpa_supplicant *iface;
6805
6806         if (!wpa_s->global->cross_connection)
6807                 return;
6808
6809         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
6810                 if (iface == wpa_s)
6811                         continue;
6812                 if (iface->drv_flags &
6813                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
6814                         continue;
6815                 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) &&
6816                     iface != wpa_s->parent)
6817                         continue;
6818
6819                 wpa_s->cross_connect_enabled = 1;
6820                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
6821                            sizeof(wpa_s->cross_connect_uplink));
6822                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
6823                            "%s to %s whenever uplink is available",
6824                            wpa_s->ifname, wpa_s->cross_connect_uplink);
6825
6826                 if (iface->ap_iface || iface->current_ssid == NULL ||
6827                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
6828                     iface->cross_connect_disallowed ||
6829                     iface->wpa_state != WPA_COMPLETED)
6830                         break;
6831
6832                 wpa_s->cross_connect_in_use = 1;
6833                 wpa_msg_global(wpa_s->parent, MSG_INFO,
6834                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
6835                                wpa_s->ifname, wpa_s->cross_connect_uplink);
6836                 break;
6837         }
6838 }
6839
6840
6841 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
6842 {
6843         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
6844             !wpa_s->p2p_in_provisioning)
6845                 return 0; /* not P2P client operation */
6846
6847         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
6848                    "session overlap");
6849         if (wpa_s != wpa_s->parent)
6850                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
6851         wpas_p2p_group_formation_failed(wpa_s, 0);
6852         return 1;
6853 }
6854
6855
6856 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
6857 {
6858         struct wpa_supplicant *wpa_s = eloop_ctx;
6859         wpas_p2p_notif_pbc_overlap(wpa_s);
6860 }
6861
6862
6863 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
6864 {
6865         struct p2p_channels chan, cli_chan;
6866         struct wpa_supplicant *ifs;
6867
6868         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
6869                 return;
6870
6871         os_memset(&chan, 0, sizeof(chan));
6872         os_memset(&cli_chan, 0, sizeof(cli_chan));
6873         if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
6874                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
6875                            "channel list");
6876                 return;
6877         }
6878
6879         p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
6880
6881         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
6882                 int freq;
6883                 if (!ifs->current_ssid ||
6884                     !ifs->current_ssid->p2p_group ||
6885                     (ifs->current_ssid->mode != WPAS_MODE_P2P_GO &&
6886                      ifs->current_ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION))
6887                                 continue;
6888                 freq = ifs->current_ssid->frequency;
6889                 if (freq_included(&chan, freq)) {
6890                         wpa_dbg(ifs, MSG_DEBUG,
6891                                 "P2P GO operating frequency %d MHz in valid range",
6892                                 freq);
6893                         continue;
6894                 }
6895
6896                 wpa_dbg(ifs, MSG_DEBUG,
6897                         "P2P GO operating in invalid frequency %d MHz", freq);
6898                 /* TODO: Consider using CSA or removing the group within
6899                  * wpa_supplicant */
6900                 wpa_msg(ifs, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
6901         }
6902 }
6903
6904
6905 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
6906                                      struct wpa_scan_results *scan_res)
6907 {
6908         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6909 }
6910
6911
6912 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
6913 {
6914         struct wpa_global *global = wpa_s->global;
6915         int found = 0;
6916         const u8 *peer;
6917
6918         if (global->p2p == NULL)
6919                 return -1;
6920
6921         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
6922
6923         if (wpa_s->pending_interface_name[0] &&
6924             !is_zero_ether_addr(wpa_s->pending_interface_addr))
6925                 found = 1;
6926
6927         peer = p2p_get_go_neg_peer(global->p2p);
6928         if (peer) {
6929                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
6930                            MACSTR, MAC2STR(peer));
6931                 p2p_unauthorize(global->p2p, peer);
6932                 found = 1;
6933         }
6934
6935         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
6936                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
6937                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
6938                 found = 1;
6939         }
6940
6941         if (wpa_s->pending_pd_before_join) {
6942                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
6943                 wpa_s->pending_pd_before_join = 0;
6944                 found = 1;
6945         }
6946
6947         wpas_p2p_stop_find(wpa_s);
6948
6949         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6950                 if (wpa_s == global->p2p_group_formation &&
6951                     (wpa_s->p2p_in_provisioning ||
6952                      wpa_s->parent->pending_interface_type ==
6953                      WPA_IF_P2P_CLIENT)) {
6954                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
6955                                    "formation found - cancelling",
6956                                    wpa_s->ifname);
6957                         found = 1;
6958                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6959                                              wpa_s->parent, NULL);
6960                         if (wpa_s->p2p_in_provisioning) {
6961                                 wpas_group_formation_completed(wpa_s, 0, 0);
6962                                 break;
6963                         }
6964                         wpas_p2p_group_delete(wpa_s,
6965                                               P2P_GROUP_REMOVAL_REQUESTED);
6966                         break;
6967                 } else if (wpa_s->p2p_in_invitation) {
6968                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
6969                                    wpa_s->ifname);
6970                         found = 1;
6971                         wpas_p2p_group_formation_failed(wpa_s, 0);
6972                 }
6973         }
6974
6975         if (!found) {
6976                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
6977                 return -1;
6978         }
6979
6980         return 0;
6981 }
6982
6983
6984 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
6985 {
6986         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6987                 return;
6988
6989         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
6990                    "being available anymore");
6991         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
6992 }
6993
6994
6995 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
6996                                    int freq_24, int freq_5, int freq_overall)
6997 {
6998         struct p2p_data *p2p = wpa_s->global->p2p;
6999         if (p2p == NULL)
7000                 return;
7001         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
7002 }
7003
7004
7005 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
7006 {
7007         u8 peer[ETH_ALEN];
7008         struct p2p_data *p2p = wpa_s->global->p2p;
7009
7010         if (p2p == NULL)
7011                 return -1;
7012
7013         if (hwaddr_aton(addr, peer))
7014                 return -1;
7015
7016         return p2p_unauthorize(p2p, peer);
7017 }
7018
7019
7020 /**
7021  * wpas_p2p_disconnect - Disconnect from a P2P Group
7022  * @wpa_s: Pointer to wpa_supplicant data
7023  * Returns: 0 on success, -1 on failure
7024  *
7025  * This can be used to disconnect from a group in which the local end is a P2P
7026  * Client or to end a P2P Group in case the local end is the Group Owner. If a
7027  * virtual network interface was created for this group, that interface will be
7028  * removed. Otherwise, only the configured P2P group network will be removed
7029  * from the interface.
7030  */
7031 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
7032 {
7033
7034         if (wpa_s == NULL)
7035                 return -1;
7036
7037         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
7038                 -1 : 0;
7039 }
7040
7041
7042 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
7043 {
7044         int ret;
7045
7046         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7047                 return 0;
7048
7049         ret = p2p_in_progress(wpa_s->global->p2p);
7050         if (ret == 0) {
7051                 /*
7052                  * Check whether there is an ongoing WPS provisioning step (or
7053                  * other parts of group formation) on another interface since
7054                  * p2p_in_progress() does not report this to avoid issues for
7055                  * scans during such provisioning step.
7056                  */
7057                 if (wpa_s->global->p2p_group_formation &&
7058                     wpa_s->global->p2p_group_formation != wpa_s) {
7059                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
7060                                 "in group formation",
7061                                 wpa_s->global->p2p_group_formation->ifname);
7062                         ret = 1;
7063                 }
7064         }
7065
7066         if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
7067                 struct os_reltime now;
7068                 os_get_reltime(&now);
7069                 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
7070                                        P2P_MAX_INITIAL_CONN_WAIT_GO)) {
7071                         /* Wait for the first client has expired */
7072                         wpa_s->global->p2p_go_wait_client.sec = 0;
7073                 } else {
7074                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
7075                         ret = 1;
7076                 }
7077         }
7078
7079         return ret;
7080 }
7081
7082
7083 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
7084                               struct wpa_ssid *ssid)
7085 {
7086         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
7087             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7088                                  wpa_s->parent, NULL) > 0) {
7089                 /**
7090                  * Remove the network by scheduling the group formation
7091                  * timeout to happen immediately. The teardown code
7092                  * needs to be scheduled to run asynch later so that we
7093                  * don't delete data from under ourselves unexpectedly.
7094                  * Calling wpas_p2p_group_formation_timeout directly
7095                  * causes a series of crashes in WPS failure scenarios.
7096                  */
7097                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
7098                            "P2P group network getting removed");
7099                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
7100                                        wpa_s->parent, NULL);
7101         }
7102 }
7103
7104
7105 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
7106                                           const u8 *addr, const u8 *ssid,
7107                                           size_t ssid_len)
7108 {
7109         struct wpa_ssid *s;
7110         size_t i;
7111
7112         for (s = wpa_s->conf->ssid; s; s = s->next) {
7113                 if (s->disabled != 2)
7114                         continue;
7115                 if (ssid &&
7116                     (ssid_len != s->ssid_len ||
7117                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
7118                         continue;
7119                 if (addr == NULL) {
7120                         if (s->mode == WPAS_MODE_P2P_GO)
7121                                 return s;
7122                         continue;
7123                 }
7124                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
7125                         return s; /* peer is GO in the persistent group */
7126                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
7127                         continue;
7128                 for (i = 0; i < s->num_p2p_clients; i++) {
7129                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
7130                                       addr, ETH_ALEN) == 0)
7131                                 return s; /* peer is P2P client in persistent
7132                                            * group */
7133                 }
7134         }
7135
7136         return NULL;
7137 }
7138
7139
7140 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
7141                                        const u8 *addr)
7142 {
7143         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7144                                  wpa_s->parent, NULL) > 0) {
7145                 /*
7146                  * This can happen if WPS provisioning step is not terminated
7147                  * cleanly (e.g., P2P Client does not send WSC_Done). Since the
7148                  * peer was able to connect, there is no need to time out group
7149                  * formation after this, though. In addition, this is used with
7150                  * the initial connection wait on the GO as a separate formation
7151                  * timeout and as such, expected to be hit after the initial WPS
7152                  * provisioning step.
7153                  */
7154                 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
7155
7156                 if (!wpa_s->p2p_go_group_formation_completed &&
7157                     !wpa_s->group_formation_reported) {
7158                         /*
7159                          * GO has not yet notified group formation success since
7160                          * the WPS step was not completed cleanly. Do that
7161                          * notification now since the P2P Client was able to
7162                          * connect and as such, must have received the
7163                          * credential from the WPS step.
7164                          */
7165                         if (wpa_s->global->p2p)
7166                                 p2p_wps_success_cb(wpa_s->global->p2p, addr);
7167                         wpas_group_formation_completed(wpa_s, 1, 0);
7168                 }
7169         }
7170         if (!wpa_s->p2p_go_group_formation_completed) {
7171                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
7172                 wpa_s->p2p_go_group_formation_completed = 1;
7173                 wpa_s->global->p2p_group_formation = NULL;
7174                 wpa_s->p2p_in_provisioning = 0;
7175                 wpa_s->p2p_in_invitation = 0;
7176         }
7177         wpa_s->global->p2p_go_wait_client.sec = 0;
7178         if (addr == NULL)
7179                 return;
7180         wpas_p2p_add_persistent_group_client(wpa_s, addr);
7181 }
7182
7183
7184 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
7185                                        int group_added)
7186 {
7187         struct wpa_supplicant *group = wpa_s;
7188         int ret = 0;
7189
7190         if (wpa_s->global->p2p_group_formation)
7191                 group = wpa_s->global->p2p_group_formation;
7192         wpa_s = wpa_s->global->p2p_init_wpa_s;
7193         offchannel_send_action_done(wpa_s);
7194         if (group_added)
7195                 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
7196         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
7197         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
7198                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
7199                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
7200                          wpa_s->p2p_persistent_id,
7201                          wpa_s->p2p_pd_before_go_neg,
7202                          wpa_s->p2p_go_ht40,
7203                          wpa_s->p2p_go_vht);
7204         return ret;
7205 }
7206
7207
7208 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
7209 {
7210         int res;
7211
7212         if (!wpa_s->p2p_fallback_to_go_neg ||
7213             wpa_s->p2p_in_provisioning <= 5)
7214                 return 0;
7215
7216         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
7217                 return 0; /* peer operating as a GO */
7218
7219         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
7220                 "fallback to GO Negotiation");
7221         wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG
7222                        "reason=GO-not-found");
7223         res = wpas_p2p_fallback_to_go_neg(wpa_s, 1);
7224
7225         return res == 1 ? 2 : 1;
7226 }
7227
7228
7229 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
7230 {
7231         struct wpa_supplicant *ifs;
7232
7233         if (wpa_s->wpa_state > WPA_SCANNING) {
7234                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
7235                         "concurrent operation",
7236                         wpa_s->conf->p2p_search_delay);
7237                 return wpa_s->conf->p2p_search_delay;
7238         }
7239
7240         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
7241                          radio_list) {
7242                 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
7243                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
7244                                 "delay due to concurrent operation on "
7245                                 "interface %s",
7246                                 wpa_s->conf->p2p_search_delay,
7247                                 ifs->ifname);
7248                         return wpa_s->conf->p2p_search_delay;
7249                 }
7250         }
7251
7252         return 0;
7253 }
7254
7255
7256 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
7257                                      struct wpa_ssid *s, const u8 *addr,
7258                                      int iface_addr)
7259 {
7260         struct psk_list_entry *psk, *tmp;
7261         int changed = 0;
7262
7263         dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
7264                               list) {
7265                 if ((iface_addr && !psk->p2p &&
7266                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
7267                     (!iface_addr && psk->p2p &&
7268                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
7269                         wpa_dbg(wpa_s, MSG_DEBUG,
7270                                 "P2P: Remove persistent group PSK list entry for "
7271                                 MACSTR " p2p=%u",
7272                                 MAC2STR(psk->addr), psk->p2p);
7273                         dl_list_del(&psk->list);
7274                         os_free(psk);
7275                         changed++;
7276                 }
7277         }
7278
7279         return changed;
7280 }
7281
7282
7283 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
7284                          const u8 *p2p_dev_addr,
7285                          const u8 *psk, size_t psk_len)
7286 {
7287         struct wpa_ssid *ssid = wpa_s->current_ssid;
7288         struct wpa_ssid *persistent;
7289         struct psk_list_entry *p, *last;
7290
7291         if (psk_len != sizeof(p->psk))
7292                 return;
7293
7294         if (p2p_dev_addr) {
7295                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
7296                         " p2p_dev_addr=" MACSTR,
7297                         MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
7298                 if (is_zero_ether_addr(p2p_dev_addr))
7299                         p2p_dev_addr = NULL;
7300         } else {
7301                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
7302                         MAC2STR(mac_addr));
7303         }
7304
7305         if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
7306                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
7307                 /* To be added to persistent group once created */
7308                 if (wpa_s->global->add_psk == NULL) {
7309                         wpa_s->global->add_psk = os_zalloc(sizeof(*p));
7310                         if (wpa_s->global->add_psk == NULL)
7311                                 return;
7312                 }
7313                 p = wpa_s->global->add_psk;
7314                 if (p2p_dev_addr) {
7315                         p->p2p = 1;
7316                         os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7317                 } else {
7318                         p->p2p = 0;
7319                         os_memcpy(p->addr, mac_addr, ETH_ALEN);
7320                 }
7321                 os_memcpy(p->psk, psk, psk_len);
7322                 return;
7323         }
7324
7325         if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
7326                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
7327                 return;
7328         }
7329
7330         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
7331                                              ssid->ssid_len);
7332         if (!persistent) {
7333                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
7334                 return;
7335         }
7336
7337         p = os_zalloc(sizeof(*p));
7338         if (p == NULL)
7339                 return;
7340         if (p2p_dev_addr) {
7341                 p->p2p = 1;
7342                 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7343         } else {
7344                 p->p2p = 0;
7345                 os_memcpy(p->addr, mac_addr, ETH_ALEN);
7346         }
7347         os_memcpy(p->psk, psk, psk_len);
7348
7349         if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
7350             (last = dl_list_last(&persistent->psk_list,
7351                                  struct psk_list_entry, list))) {
7352                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
7353                         MACSTR " (p2p=%u) to make room for a new one",
7354                         MAC2STR(last->addr), last->p2p);
7355                 dl_list_del(&last->list);
7356                 os_free(last);
7357         }
7358
7359         wpas_p2p_remove_psk_entry(wpa_s->parent, persistent,
7360                                   p2p_dev_addr ? p2p_dev_addr : mac_addr,
7361                                   p2p_dev_addr == NULL);
7362         if (p2p_dev_addr) {
7363                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
7364                         MACSTR, MAC2STR(p2p_dev_addr));
7365         } else {
7366                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
7367                         MAC2STR(mac_addr));
7368         }
7369         dl_list_add(&persistent->psk_list, &p->list);
7370
7371         if (wpa_s->parent->conf->update_config &&
7372             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
7373                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
7374 }
7375
7376
7377 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
7378                                 struct wpa_ssid *s, const u8 *addr,
7379                                 int iface_addr)
7380 {
7381         int res;
7382
7383         res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
7384         if (res > 0 && wpa_s->conf->update_config &&
7385             wpa_config_write(wpa_s->confname, wpa_s->conf))
7386                 wpa_dbg(wpa_s, MSG_DEBUG,
7387                         "P2P: Failed to update configuration");
7388 }
7389
7390
7391 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
7392                                       const u8 *peer, int iface_addr)
7393 {
7394         struct hostapd_data *hapd;
7395         struct hostapd_wpa_psk *psk, *prev, *rem;
7396         struct sta_info *sta;
7397
7398         if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
7399             wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
7400                 return;
7401
7402         /* Remove per-station PSK entry */
7403         hapd = wpa_s->ap_iface->bss[0];
7404         prev = NULL;
7405         psk = hapd->conf->ssid.wpa_psk;
7406         while (psk) {
7407                 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
7408                     (!iface_addr &&
7409                      os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
7410                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
7411                                 MACSTR " iface_addr=%d",
7412                                 MAC2STR(peer), iface_addr);
7413                         if (prev)
7414                                 prev->next = psk->next;
7415                         else
7416                                 hapd->conf->ssid.wpa_psk = psk->next;
7417                         rem = psk;
7418                         psk = psk->next;
7419                         os_free(rem);
7420                 } else {
7421                         prev = psk;
7422                         psk = psk->next;
7423                 }
7424         }
7425
7426         /* Disconnect from group */
7427         if (iface_addr)
7428                 sta = ap_get_sta(hapd, peer);
7429         else
7430                 sta = ap_get_sta_p2p(hapd, peer);
7431         if (sta) {
7432                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
7433                         " (iface_addr=%d) from group",
7434                         MAC2STR(peer), iface_addr);
7435                 hostapd_drv_sta_deauth(hapd, sta->addr,
7436                                        WLAN_REASON_DEAUTH_LEAVING);
7437                 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
7438         }
7439 }
7440
7441
7442 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
7443                             int iface_addr)
7444 {
7445         struct wpa_ssid *s;
7446         struct wpa_supplicant *w;
7447         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
7448
7449         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
7450
7451         /* Remove from any persistent group */
7452         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
7453                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
7454                         continue;
7455                 if (!iface_addr)
7456                         wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0);
7457                 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr);
7458         }
7459
7460         /* Remove from any operating group */
7461         for (w = wpa_s->global->ifaces; w; w = w->next)
7462                 wpas_p2p_remove_client_go(w, peer, iface_addr);
7463 }
7464
7465
7466 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
7467 {
7468         struct wpa_supplicant *wpa_s = eloop_ctx;
7469         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
7470 }
7471
7472
7473 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
7474 {
7475         struct wpa_supplicant *wpa_s = eloop_ctx;
7476
7477         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
7478         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
7479 }
7480
7481
7482 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
7483                                         struct wpa_ssid *ssid)
7484 {
7485         struct wpa_supplicant *iface;
7486
7487         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7488                 if (!iface->current_ssid ||
7489                     iface->current_ssid->frequency == freq ||
7490                     (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
7491                      !iface->current_ssid->p2p_group))
7492                         continue;
7493
7494                 /* Remove the connection with least priority */
7495                 if (!wpas_is_p2p_prioritized(iface)) {
7496                         /* STA connection has priority over existing
7497                          * P2P connection, so remove the interface. */
7498                         wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
7499                         eloop_register_timeout(0, 0,
7500                                                wpas_p2p_group_freq_conflict,
7501                                                iface, NULL);
7502                         /* If connection in progress is P2P connection, do not
7503                          * proceed for the connection. */
7504                         if (wpa_s == iface)
7505                                 return -1;
7506                         else
7507                                 return 0;
7508                 } else {
7509                         /* P2P connection has priority, disable the STA network
7510                          */
7511                         wpa_supplicant_disable_network(wpa_s->global->ifaces,
7512                                                        ssid);
7513                         wpa_msg(wpa_s->global->ifaces, MSG_INFO,
7514                                 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
7515                         os_memset(wpa_s->global->ifaces->pending_bssid, 0,
7516                                   ETH_ALEN);
7517                         /* If P2P connection is in progress, continue
7518                          * connecting...*/
7519                         if (wpa_s == iface)
7520                                 return 0;
7521                         else
7522                                 return -1;
7523                 }
7524         }
7525
7526         return 0;
7527 }
7528
7529
7530 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
7531 {
7532         struct wpa_ssid *ssid = wpa_s->current_ssid;
7533
7534         if (ssid == NULL || !ssid->p2p_group)
7535                 return 0;
7536
7537         if (wpa_s->p2p_last_4way_hs_fail &&
7538             wpa_s->p2p_last_4way_hs_fail == ssid) {
7539                 u8 go_dev_addr[ETH_ALEN];
7540                 struct wpa_ssid *persistent;
7541
7542                 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
7543                                               ssid->ssid,
7544                                               ssid->ssid_len) <= 0) {
7545                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
7546                         goto disconnect;
7547                 }
7548
7549                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
7550                         MACSTR, MAC2STR(go_dev_addr));
7551                 persistent = wpas_p2p_get_persistent(wpa_s->parent, go_dev_addr,
7552                                                      ssid->ssid,
7553                                                      ssid->ssid_len);
7554                 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
7555                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
7556                         goto disconnect;
7557                 }
7558                 wpa_msg_global(wpa_s->parent, MSG_INFO,
7559                                P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
7560                                persistent->id);
7561         disconnect:
7562                 wpa_s->p2p_last_4way_hs_fail = NULL;
7563                 /*
7564                  * Remove the group from a timeout to avoid issues with caller
7565                  * continuing to use the interface if this is on a P2P group
7566                  * interface.
7567                  */
7568                 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
7569                                        wpa_s, NULL);
7570                 return 1;
7571         }
7572
7573         wpa_s->p2p_last_4way_hs_fail = ssid;
7574         return 0;
7575 }
7576
7577
7578 #ifdef CONFIG_WPS_NFC
7579
7580 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
7581                                              struct wpabuf *p2p)
7582 {
7583         struct wpabuf *ret;
7584         size_t wsc_len;
7585
7586         if (p2p == NULL) {
7587                 wpabuf_free(wsc);
7588                 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
7589                 return NULL;
7590         }
7591
7592         wsc_len = wsc ? wpabuf_len(wsc) : 0;
7593         ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
7594         if (ret == NULL) {
7595                 wpabuf_free(wsc);
7596                 wpabuf_free(p2p);
7597                 return NULL;
7598         }
7599
7600         wpabuf_put_be16(ret, wsc_len);
7601         if (wsc)
7602                 wpabuf_put_buf(ret, wsc);
7603         wpabuf_put_be16(ret, wpabuf_len(p2p));
7604         wpabuf_put_buf(ret, p2p);
7605
7606         wpabuf_free(wsc);
7607         wpabuf_free(p2p);
7608         wpa_hexdump_buf(MSG_DEBUG,
7609                         "P2P: Generated NFC connection handover message", ret);
7610
7611         if (ndef && ret) {
7612                 struct wpabuf *tmp;
7613                 tmp = ndef_build_p2p(ret);
7614                 wpabuf_free(ret);
7615                 if (tmp == NULL) {
7616                         wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
7617                         return NULL;
7618                 }
7619                 ret = tmp;
7620         }
7621
7622         return ret;
7623 }
7624
7625
7626 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
7627                              struct wpa_ssid **ssid, u8 *go_dev_addr)
7628 {
7629         struct wpa_supplicant *iface;
7630
7631         if (go_dev_addr)
7632                 os_memset(go_dev_addr, 0, ETH_ALEN);
7633         if (ssid)
7634                 *ssid = NULL;
7635         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7636                 if (iface->wpa_state < WPA_ASSOCIATING ||
7637                     iface->current_ssid == NULL || iface->assoc_freq == 0 ||
7638                     !iface->current_ssid->p2p_group ||
7639                     iface->current_ssid->mode != WPAS_MODE_INFRA)
7640                         continue;
7641                 if (ssid)
7642                         *ssid = iface->current_ssid;
7643                 if (go_dev_addr)
7644                         os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
7645                 return iface->assoc_freq;
7646         }
7647         return 0;
7648 }
7649
7650
7651 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
7652                                           int ndef)
7653 {
7654         struct wpabuf *wsc, *p2p;
7655         struct wpa_ssid *ssid;
7656         u8 go_dev_addr[ETH_ALEN];
7657         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
7658
7659         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
7660                 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
7661                 return NULL;
7662         }
7663
7664         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7665             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7666                            &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
7667                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
7668                 return NULL;
7669         }
7670
7671         if (cli_freq == 0) {
7672                 wsc = wps_build_nfc_handover_req_p2p(
7673                         wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
7674         } else
7675                 wsc = NULL;
7676         p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
7677                                          go_dev_addr, ssid ? ssid->ssid : NULL,
7678                                          ssid ? ssid->ssid_len : 0);
7679
7680         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7681 }
7682
7683
7684 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
7685                                           int ndef, int tag)
7686 {
7687         struct wpabuf *wsc, *p2p;
7688         struct wpa_ssid *ssid;
7689         u8 go_dev_addr[ETH_ALEN];
7690         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
7691
7692         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7693                 return NULL;
7694
7695         if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7696             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7697                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
7698                 return NULL;
7699
7700         if (cli_freq == 0) {
7701                 wsc = wps_build_nfc_handover_sel_p2p(
7702                         wpa_s->parent->wps,
7703                         tag ? wpa_s->conf->wps_nfc_dev_pw_id :
7704                         DEV_PW_NFC_CONNECTION_HANDOVER,
7705                         wpa_s->conf->wps_nfc_dh_pubkey,
7706                         tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
7707         } else
7708                 wsc = NULL;
7709         p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
7710                                          go_dev_addr, ssid ? ssid->ssid : NULL,
7711                                          ssid ? ssid->ssid_len : 0);
7712
7713         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7714 }
7715
7716
7717 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
7718                                    struct p2p_nfc_params *params)
7719 {
7720         wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
7721                    "connection handover (freq=%d)",
7722                    params->go_freq);
7723
7724         if (params->go_freq && params->go_ssid_len) {
7725                 wpa_s->p2p_wps_method = WPS_NFC;
7726                 wpa_s->pending_join_wps_method = WPS_NFC;
7727                 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
7728                 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
7729                           ETH_ALEN);
7730                 return wpas_p2p_join_start(wpa_s, params->go_freq,
7731                                            params->go_ssid,
7732                                            params->go_ssid_len);
7733         }
7734
7735         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7736                                 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
7737                                 params->go_freq, -1, 0, 1, 1);
7738 }
7739
7740
7741 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
7742                                   struct p2p_nfc_params *params, int tag)
7743 {
7744         int res, persistent;
7745         struct wpa_ssid *ssid;
7746
7747         wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
7748                    "connection handover");
7749         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7750                 ssid = wpa_s->current_ssid;
7751                 if (ssid == NULL)
7752                         continue;
7753                 if (ssid->mode != WPAS_MODE_P2P_GO)
7754                         continue;
7755                 if (wpa_s->ap_iface == NULL)
7756                         continue;
7757                 break;
7758         }
7759         if (wpa_s == NULL) {
7760                 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
7761                 return -1;
7762         }
7763
7764         if (wpa_s->parent->p2p_oob_dev_pw_id !=
7765             DEV_PW_NFC_CONNECTION_HANDOVER &&
7766             !wpa_s->parent->p2p_oob_dev_pw) {
7767                 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
7768                 return -1;
7769         }
7770         res = wpas_ap_wps_add_nfc_pw(
7771                 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
7772                 wpa_s->parent->p2p_oob_dev_pw,
7773                 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
7774                 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
7775         if (res)
7776                 return res;
7777
7778         if (!tag) {
7779                 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
7780                 return 0;
7781         }
7782
7783         if (!params->peer ||
7784             !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
7785                 return 0;
7786
7787         wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
7788                    " to join", MAC2STR(params->peer->p2p_device_addr));
7789
7790         wpa_s->global->p2p_invite_group = wpa_s;
7791         persistent = ssid->p2p_persistent_group &&
7792                 wpas_p2p_get_persistent(wpa_s->parent,
7793                                         params->peer->p2p_device_addr,
7794                                         ssid->ssid, ssid->ssid_len);
7795         wpa_s->parent->pending_invite_ssid_id = -1;
7796
7797         return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
7798                           P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
7799                           ssid->ssid, ssid->ssid_len, ssid->frequency,
7800                           wpa_s->global->p2p_dev_addr, persistent, 0,
7801                           wpa_s->parent->p2p_oob_dev_pw_id);
7802 }
7803
7804
7805 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
7806                                     struct p2p_nfc_params *params,
7807                                     int forced_freq)
7808 {
7809         wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
7810                    "connection handover");
7811         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7812                                 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
7813                                 forced_freq, -1, 0, 1, 1);
7814 }
7815
7816
7817 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
7818                                     struct p2p_nfc_params *params,
7819                                     int forced_freq)
7820 {
7821         int res;
7822
7823         wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
7824                    "connection handover");
7825         res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7826                                WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
7827                                forced_freq, -1, 0, 1, 1);
7828         if (res)
7829                 return res;
7830
7831         res = wpas_p2p_listen(wpa_s, 60);
7832         if (res) {
7833                 p2p_unauthorize(wpa_s->global->p2p,
7834                                 params->peer->p2p_device_addr);
7835         }
7836
7837         return res;
7838 }
7839
7840
7841 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
7842                                             const struct wpabuf *data,
7843                                             int sel, int tag, int forced_freq)
7844 {
7845         const u8 *pos, *end;
7846         u16 len, id;
7847         struct p2p_nfc_params params;
7848         int res;
7849
7850         os_memset(&params, 0, sizeof(params));
7851         params.sel = sel;
7852
7853         wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
7854
7855         pos = wpabuf_head(data);
7856         end = pos + wpabuf_len(data);
7857
7858         if (end - pos < 2) {
7859                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
7860                            "attributes");
7861                 return -1;
7862         }
7863         len = WPA_GET_BE16(pos);
7864         pos += 2;
7865         if (len > end - pos) {
7866                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
7867                            "attributes");
7868                 return -1;
7869         }
7870         params.wsc_attr = pos;
7871         params.wsc_len = len;
7872         pos += len;
7873
7874         if (end - pos < 2) {
7875                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
7876                            "attributes");
7877                 return -1;
7878         }
7879         len = WPA_GET_BE16(pos);
7880         pos += 2;
7881         if (len > end - pos) {
7882                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
7883                            "attributes");
7884                 return -1;
7885         }
7886         params.p2p_attr = pos;
7887         params.p2p_len = len;
7888         pos += len;
7889
7890         wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
7891                     params.wsc_attr, params.wsc_len);
7892         wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
7893                     params.p2p_attr, params.p2p_len);
7894         if (pos < end) {
7895                 wpa_hexdump(MSG_DEBUG,
7896                             "P2P: Ignored extra data after P2P attributes",
7897                             pos, end - pos);
7898         }
7899
7900         res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
7901         if (res)
7902                 return res;
7903
7904         if (params.next_step == NO_ACTION)
7905                 return 0;
7906
7907         if (params.next_step == BOTH_GO) {
7908                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
7909                         MAC2STR(params.peer->p2p_device_addr));
7910                 return 0;
7911         }
7912
7913         if (params.next_step == PEER_CLIENT) {
7914                 if (!is_zero_ether_addr(params.go_dev_addr)) {
7915                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
7916                                 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
7917                                 " ssid=\"%s\"",
7918                                 MAC2STR(params.peer->p2p_device_addr),
7919                                 params.go_freq,
7920                                 MAC2STR(params.go_dev_addr),
7921                                 wpa_ssid_txt(params.go_ssid,
7922                                              params.go_ssid_len));
7923                 } else {
7924                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
7925                                 "peer=" MACSTR " freq=%d",
7926                                 MAC2STR(params.peer->p2p_device_addr),
7927                                 params.go_freq);
7928                 }
7929                 return 0;
7930         }
7931
7932         if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
7933                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
7934                         MACSTR, MAC2STR(params.peer->p2p_device_addr));
7935                 return 0;
7936         }
7937
7938         wpabuf_free(wpa_s->p2p_oob_dev_pw);
7939         wpa_s->p2p_oob_dev_pw = NULL;
7940
7941         if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
7942                 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
7943                            "received");
7944                 return -1;
7945         }
7946
7947         id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
7948         wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
7949         wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
7950                     params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
7951         os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
7952                   params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
7953         wpa_s->p2p_peer_oob_pk_hash_known = 1;
7954
7955         if (tag) {
7956                 if (id < 0x10) {
7957                         wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
7958                                    "peer OOB Device Password Id %u", id);
7959                         return -1;
7960                 }
7961                 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
7962                            "Device Password Id %u", id);
7963                 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
7964                                 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
7965                                 params.oob_dev_pw_len -
7966                                 WPS_OOB_PUBKEY_HASH_LEN - 2);
7967                 wpa_s->p2p_oob_dev_pw_id = id;
7968                 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
7969                         params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
7970                         params.oob_dev_pw_len -
7971                         WPS_OOB_PUBKEY_HASH_LEN - 2);
7972                 if (wpa_s->p2p_oob_dev_pw == NULL)
7973                         return -1;
7974
7975                 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7976                     wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7977                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
7978                         return -1;
7979         } else {
7980                 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
7981                            "without Device Password");
7982                 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
7983         }
7984
7985         switch (params.next_step) {
7986         case NO_ACTION:
7987         case BOTH_GO:
7988         case PEER_CLIENT:
7989                 /* already covered above */
7990                 return 0;
7991         case JOIN_GROUP:
7992                 return wpas_p2p_nfc_join_group(wpa_s, &params);
7993         case AUTH_JOIN:
7994                 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
7995         case INIT_GO_NEG:
7996                 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
7997         case RESP_GO_NEG:
7998                 /* TODO: use own OOB Dev Pw */
7999                 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
8000         }
8001
8002         return -1;
8003 }
8004
8005
8006 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
8007                              const struct wpabuf *data, int forced_freq)
8008 {
8009         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8010                 return -1;
8011
8012         return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
8013 }
8014
8015
8016 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
8017                                  const struct wpabuf *req,
8018                                  const struct wpabuf *sel, int forced_freq)
8019 {
8020         struct wpabuf *tmp;
8021         int ret;
8022
8023         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8024                 return -1;
8025
8026         wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
8027
8028         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
8029                           wpabuf_head(req), wpabuf_len(req));
8030         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
8031                           wpabuf_head(sel), wpabuf_len(sel));
8032         if (forced_freq)
8033                 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
8034         tmp = ndef_parse_p2p(init ? sel : req);
8035         if (tmp == NULL) {
8036                 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
8037                 return -1;
8038         }
8039
8040         ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
8041                                                forced_freq);
8042         wpabuf_free(tmp);
8043
8044         return ret;
8045 }
8046
8047
8048 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
8049 {
8050         const u8 *if_addr;
8051         int go_intent = wpa_s->conf->p2p_go_intent;
8052         struct wpa_supplicant *iface;
8053
8054         if (wpa_s->global->p2p == NULL)
8055                 return -1;
8056
8057         if (!enabled) {
8058                 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
8059                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
8060                 {
8061                         if (!iface->ap_iface)
8062                                 continue;
8063                         hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
8064                 }
8065                 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
8066                                                  0, NULL);
8067                 if (wpa_s->p2p_nfc_tag_enabled)
8068                         wpas_p2p_remove_pending_group_interface(wpa_s);
8069                 wpa_s->p2p_nfc_tag_enabled = 0;
8070                 return 0;
8071         }
8072
8073         if (wpa_s->global->p2p_disabled)
8074                 return -1;
8075
8076         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
8077             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
8078             wpa_s->conf->wps_nfc_dev_pw == NULL ||
8079             wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
8080                 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
8081                            "to allow static handover cases");
8082                 return -1;
8083         }
8084
8085         wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
8086
8087         wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8088         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8089         wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8090         if (wpa_s->p2p_oob_dev_pw == NULL)
8091                 return -1;
8092         wpa_s->p2p_peer_oob_pk_hash_known = 0;
8093
8094         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
8095             wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
8096                 /*
8097                  * P2P Group Interface present and the command came on group
8098                  * interface, so enable the token for the current interface.
8099                  */
8100                 wpa_s->create_p2p_iface = 0;
8101         } else {
8102                 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
8103         }
8104
8105         if (wpa_s->create_p2p_iface) {
8106                 enum wpa_driver_if_type iftype;
8107                 /* Prepare to add a new interface for the group */
8108                 iftype = WPA_IF_P2P_GROUP;
8109                 if (go_intent == 15)
8110                         iftype = WPA_IF_P2P_GO;
8111                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
8112                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
8113                                    "interface for the group");
8114                         return -1;
8115                 }
8116
8117                 if_addr = wpa_s->pending_interface_addr;
8118         } else
8119                 if_addr = wpa_s->own_addr;
8120
8121         wpa_s->p2p_nfc_tag_enabled = enabled;
8122
8123         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8124                 struct hostapd_data *hapd;
8125                 if (iface->ap_iface == NULL)
8126                         continue;
8127                 hapd = iface->ap_iface->bss[0];
8128                 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
8129                 hapd->conf->wps_nfc_dh_pubkey =
8130                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
8131                 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
8132                 hapd->conf->wps_nfc_dh_privkey =
8133                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
8134                 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
8135                 hapd->conf->wps_nfc_dev_pw =
8136                         wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8137                 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8138
8139                 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
8140                         wpa_dbg(iface, MSG_DEBUG,
8141                                 "P2P: Failed to enable NFC Tag for GO");
8142                 }
8143         }
8144         p2p_set_authorized_oob_dev_pw_id(
8145                 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
8146                 if_addr);
8147
8148         return 0;
8149 }
8150
8151 #endif /* CONFIG_WPS_NFC */
8152
8153
8154 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
8155                                              struct wpa_used_freq_data *freqs,
8156                                              unsigned int num)
8157 {
8158         u8 curr_chan, cand, chan;
8159         unsigned int i;
8160
8161         curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
8162         for (i = 0, cand = 0; i < num; i++) {
8163                 ieee80211_freq_to_chan(freqs[i].freq, &chan);
8164                 if (curr_chan == chan) {
8165                         cand = 0;
8166                         break;
8167                 }
8168
8169                 if (chan == 1 || chan == 6 || chan == 11)
8170                         cand = chan;
8171         }
8172
8173         if (cand) {
8174                 wpa_dbg(wpa_s, MSG_DEBUG,
8175                         "P2P: Update Listen channel to %u based on operating channel",
8176                         cand);
8177                 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
8178         }
8179 }
8180
8181
8182 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
8183 {
8184         struct wpa_used_freq_data *freqs;
8185         unsigned int num = wpa_s->num_multichan_concurrent;
8186
8187         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8188                 return;
8189
8190         /*
8191          * If possible, optimize the Listen channel to be a channel that is
8192          * already used by one of the other interfaces.
8193          */
8194         if (!wpa_s->conf->p2p_optimize_listen_chan)
8195                 return;
8196
8197         if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
8198                 return;
8199
8200         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
8201         if (!freqs)
8202                 return;
8203
8204         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
8205
8206         wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
8207         os_free(freqs);
8208 }
8209
8210
8211 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
8212 {
8213         if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
8214                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
8215                         "the management interface is being removed");
8216                 wpas_p2p_deinit_global(wpa_s->global);
8217         }
8218 }
8219
8220
8221 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
8222 {
8223         if (wpa_s->ap_iface->bss)
8224                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
8225         wpas_p2p_group_deinit(wpa_s);
8226 }