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
 130
 131 /*
 132  * Get the number of concurrent channels that the HW can operate, but that are
 133  * currently not in use by any of the wpa_supplicant interfaces.
 134  */
 135 static int wpas_p2p_num_unused_channels(struct wpa_supplicant *wpa_s)
 136 {
 137         int *freqs;
 138         int num, unused;
 139
 140         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
 141         if (!freqs)
 142                 return -1;
 143
 144         num = get_shared_radio_freqs(wpa_s, freqs,
 145                                      wpa_s->num_multichan_concurrent);
 146         os_free(freqs);
 147
 148         unused = wpa_s->num_multichan_concurrent - num;
 149         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: num_unused_channels: %d", unused);
 150         return unused;
 151 }
 152
 153
 154 /*
 155  * Get the frequencies that are currently in use by one or more of the virtual
 156  * interfaces, and that are also valid for P2P operation.
 157  */
 158 static unsigned int
 159 wpas_p2p_valid_oper_freqs(struct wpa_supplicant *wpa_s,
 160                           struct wpa_used_freq_data *p2p_freqs,
 161                           unsigned int len)
 162 {
 163         struct wpa_used_freq_data *freqs;
 164         unsigned int num, i, j;
 165
 166         freqs = os_calloc(wpa_s->num_multichan_concurrent,
 167                           sizeof(struct wpa_used_freq_data));
 168         if (!freqs)
 169                 return 0;
 170
 171         num = get_shared_radio_freqs_data(wpa_s, freqs,
 172                                           wpa_s->num_multichan_concurrent);
 173
 174         os_memset(p2p_freqs, 0, sizeof(struct wpa_used_freq_data) * len);
 175
 176         for (i = 0, j = 0; i < num && j < len; i++) {
 177                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
 178                         p2p_freqs[j++] = freqs[i];
 179         }
 180
 181         os_free(freqs);
 182
 183         dump_freq_data(wpa_s, "valid for P2P", p2p_freqs, j);
 184
 185         return j;
 186 }
 187
 188
 189 static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s,
 190                                              int freq)
 191 {
 192         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 193                 return;
 194         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
 195             freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
 196             wpas_p2p_num_unused_channels(wpa_s) > 0) {
 197                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz due to p2p_ignore_shared_freq=1 configuration",
 198                            freq);
 199                 freq = 0;
 200         }
 201         p2p_set_own_freq_preference(wpa_s->global->p2p, freq);
 202 }
 203
 204
 205 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
 206                                       struct wpa_scan_results *scan_res)
 207 {
 208         size_t i;
 209
 210         if (wpa_s->p2p_scan_work) {
 211                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
 212                 wpa_s->p2p_scan_work = NULL;
 213                 radio_work_done(work);
 214         }
 215
 216         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 217                 return;
 218
 219         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
 220                    (int) scan_res->num);
 221
 222         for (i = 0; i < scan_res->num; i++) {
 223                 struct wpa_scan_res *bss = scan_res->res[i];
 224                 struct os_reltime time_tmp_age, entry_ts;
 225                 const u8 *ies;
 226                 size_t ies_len;
 227
 228                 time_tmp_age.sec = bss->age / 1000;
 229                 time_tmp_age.usec = (bss->age % 1000) * 1000;
 230                 os_reltime_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts);
 231
 232                 ies = (const u8 *) (bss + 1);
 233                 ies_len = bss->ie_len;
 234                 if (bss->beacon_ie_len > 0 &&
 235                     !wpa_scan_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
 236                     wpa_scan_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
 237                         wpa_printf(MSG_DEBUG, "P2P: Use P2P IE(s) from Beacon frame since no P2P IE(s) in Probe Response frames received for "
 238                                    MACSTR, MAC2STR(bss->bssid));
 239                         ies = ies + ies_len;
 240                         ies_len = bss->beacon_ie_len;
 241                 }
 242
 243
 244                 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
 245                                          bss->freq, &entry_ts, bss->level,
 246                                          ies, ies_len) > 0)
 247                         break;
 248         }
 249
 250         p2p_scan_res_handled(wpa_s->global->p2p);
 251 }
 252
 253
 254 static void wpas_p2p_trigger_scan_cb(struct wpa_radio_work *work, int deinit)
 255 {
 256         struct wpa_supplicant *wpa_s = work->wpa_s;
 257         struct wpa_driver_scan_params *params = work->ctx;
 258         int ret;
 259
 260         if (deinit) {
 261                 if (!work->started) {
 262                         wpa_scan_free_params(params);
 263                         return;
 264                 }
 265
 266                 wpa_s->p2p_scan_work = NULL;
 267                 return;
 268         }
 269
 270         ret = wpa_drv_scan(wpa_s, params);
 271         wpa_scan_free_params(params);
 272         work->ctx = NULL;
 273         if (ret) {
 274                 radio_work_done(work);
 275                 p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 276                 return;
 277         }
 278
 279         p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 280         os_get_reltime(&wpa_s->scan_trigger_time);
 281         wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 282         wpa_s->own_scan_requested = 1;
 283         wpa_s->p2p_scan_work = work;
 284 }
 285
 286
 287 static int wpas_p2p_search_social_channel(struct wpa_supplicant *wpa_s,
 288                                           int freq)
 289 {
 290         if (wpa_s->global->p2p_24ghz_social_channels &&
 291             (freq == 2412 || freq == 2437 || freq == 2462)) {
 292                 /*
 293                  * Search all social channels regardless of whether these have
 294                  * been disabled for P2P operating channel use to avoid missing
 295                  * peers.
 296                  */
 297                 return 1;
 298         }
 299         return p2p_supported_freq(wpa_s->global->p2p, freq);
 300 }
 301
 302
 303 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
 304                          unsigned int num_req_dev_types,
 305                          const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
 306 {
 307         struct wpa_supplicant *wpa_s = ctx;
 308         struct wpa_driver_scan_params *params = NULL;
 309         struct wpabuf *wps_ie, *ies;
 310         unsigned int num_channels = 0;
 311         int social_channels_freq[] = { 2412, 2437, 2462, 60480 };
 312         size_t ielen;
 313         u8 *n, i;
 314
 315         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 316                 return -1;
 317
 318         if (wpa_s->p2p_scan_work) {
 319                 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending");
 320                 return -1;
 321         }
 322
 323         params = os_zalloc(sizeof(*params));
 324         if (params == NULL)
 325                 return -1;
 326
 327         /* P2P Wildcard SSID */
 328         params->num_ssids = 1;
 329         n = os_malloc(P2P_WILDCARD_SSID_LEN);
 330         if (n == NULL)
 331                 goto fail;
 332         os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
 333         params->ssids[0].ssid = n;
 334         params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
 335
 336         wpa_s->wps->dev.p2p = 1;
 337         wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
 338                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
 339                                         num_req_dev_types, req_dev_types);
 340         if (wps_ie == NULL)
 341                 goto fail;
 342
 343         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
 344         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
 345         if (ies == NULL) {
 346                 wpabuf_free(wps_ie);
 347                 goto fail;
 348         }
 349         wpabuf_put_buf(ies, wps_ie);
 350         wpabuf_free(wps_ie);
 351
 352         p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);
 353
 354         params->p2p_probe = 1;
 355         n = os_malloc(wpabuf_len(ies));
 356         if (n == NULL) {
 357                 wpabuf_free(ies);
 358                 goto fail;
 359         }
 360         os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies));
 361         params->extra_ies = n;
 362         params->extra_ies_len = wpabuf_len(ies);
 363         wpabuf_free(ies);
 364
 365         switch (type) {
 366         case P2P_SCAN_SOCIAL:
 367                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 1,
 368                                           sizeof(int));
 369                 if (params->freqs == NULL)
 370                         goto fail;
 371                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 372                         if (wpas_p2p_search_social_channel(
 373                                     wpa_s, social_channels_freq[i]))
 374                                 params->freqs[num_channels++] =
 375                                         social_channels_freq[i];
 376                 }
 377                 params->freqs[num_channels++] = 0;
 378                 break;
 379         case P2P_SCAN_FULL:
 380                 break;
 381         case P2P_SCAN_SPECIFIC:
 382                 params->freqs = os_calloc(2, sizeof(int));
 383                 if (params->freqs == NULL)
 384                         goto fail;
 385                 params->freqs[0] = freq;
 386                 params->freqs[1] = 0;
 387                 break;
 388         case P2P_SCAN_SOCIAL_PLUS_ONE:
 389                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 2,
 390                                           sizeof(int));
 391                 if (params->freqs == NULL)
 392                         goto fail;
 393                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 394                         if (wpas_p2p_search_social_channel(
 395                                     wpa_s, social_channels_freq[i]))
 396                                 params->freqs[num_channels++] =
 397                                         social_channels_freq[i];
 398                 }
 399                 if (p2p_supported_freq(wpa_s->global->p2p, freq))
 400                         params->freqs[num_channels++] = freq;
 401                 params->freqs[num_channels++] = 0;
 402                 break;
 403         }
 404
 405         radio_remove_works(wpa_s, "p2p-scan", 0);
 406         if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb,
 407                            params) < 0)
 408                 goto fail;
 409         return 0;
 410
 411 fail:
 412         wpa_scan_free_params(params);
 413         return -1;
 414 }
 415
 416
 417 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 418 {
 419         switch (p2p_group_interface) {
 420         case P2P_GROUP_INTERFACE_PENDING:
 421                 return WPA_IF_P2P_GROUP;
 422         case P2P_GROUP_INTERFACE_GO:
 423                 return WPA_IF_P2P_GO;
 424         case P2P_GROUP_INTERFACE_CLIENT:
 425                 return WPA_IF_P2P_CLIENT;
 426         }
 427
 428         return WPA_IF_P2P_GROUP;
 429 }
 430
 431
 432 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 433                                                   const u8 *ssid,
 434                                                   size_t ssid_len, int *go)
 435 {
 436         struct wpa_ssid *s;
 437
 438         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 439                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 440                         if (s->disabled != 0 || !s->p2p_group ||
 441                             s->ssid_len != ssid_len ||
 442                             os_memcmp(ssid, s->ssid, ssid_len) != 0)
 443                                 continue;
 444                         if (s->mode == WPAS_MODE_P2P_GO &&
 445                             s != wpa_s->current_ssid)
 446                                 continue;
 447                         if (go)
 448                                 *go = s->mode == WPAS_MODE_P2P_GO;
 449                         return wpa_s;
 450                 }
 451         }
 452
 453         return NULL;
 454 }
 455
 456
 457 static void run_wpas_p2p_disconnect(void *eloop_ctx, void *timeout_ctx)
 458 {
 459         struct wpa_supplicant *wpa_s = eloop_ctx;
 460         wpa_printf(MSG_DEBUG,
 461                    "P2P: Complete previously requested removal of %s",
 462                    wpa_s->ifname);
 463         wpas_p2p_disconnect(wpa_s);
 464 }
 465
 466
 467 static int wpas_p2p_disconnect_safely(struct wpa_supplicant *wpa_s,
 468                                       struct wpa_supplicant *calling_wpa_s)
 469 {
 470         if (calling_wpa_s == wpa_s && wpa_s &&
 471             wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 472                 /*
 473                  * The calling wpa_s instance is going to be removed. Do that
 474                  * from an eloop callback to keep the instance available until
 475                  * the caller has returned. This my be needed, e.g., to provide
 476                  * control interface responses on the per-interface socket.
 477                  */
 478                 if (eloop_register_timeout(0, 0, run_wpas_p2p_disconnect,
 479                                            wpa_s, NULL) < 0)
 480                         return -1;
 481                 return 0;
 482         }
 483
 484         return wpas_p2p_disconnect(wpa_s);
 485 }
 486
 487
 488 /* Determine total number of clients in active groups where we are the GO */
 489 static unsigned int p2p_group_go_member_count(struct wpa_supplicant *wpa_s)
 490 {
 491         unsigned int count = 0;
 492         struct wpa_ssid *s;
 493
 494         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 495                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 496                         wpa_printf(MSG_DEBUG,
 497                                    "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d",
 498                                    wpa_s, s, s->disabled, s->p2p_group,
 499                                    s->mode);
 500                         if (!s->disabled && s->p2p_group &&
 501                             s->mode == WPAS_MODE_P2P_GO) {
 502                                 count += p2p_get_group_num_members(
 503                                         wpa_s->p2p_group);
 504                         }
 505                 }
 506         }
 507
 508         return count;
 509 }
 510
 511
 512 /* Find an interface for a P2P group where we are the GO */
 513 static struct wpa_supplicant *
 514 wpas_p2p_get_go_group(struct wpa_supplicant *wpa_s)
 515 {
 516         struct wpa_supplicant *save = NULL;
 517         struct wpa_ssid *s;
 518
 519         if (!wpa_s)
 520                 return NULL;
 521
 522         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 523                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 524                         if (s->disabled || !s->p2p_group ||
 525                             s->mode != WPAS_MODE_P2P_GO)
 526                                 continue;
 527
 528                         /* Prefer a group with connected clients */
 529                         if (p2p_get_group_num_members(wpa_s->p2p_group))
 530                                 return wpa_s;
 531                         save = wpa_s;
 532                 }
 533         }
 534
 535         /* No group with connected clients, so pick the one without (if any) */
 536         return save;
 537 }
 538
 539
 540 /* Find an active P2P group where we are the GO */
 541 static struct wpa_ssid * wpas_p2p_group_go_ssid(struct wpa_supplicant *wpa_s,
 542                                                 u8 *bssid)
 543 {
 544         struct wpa_ssid *s, *empty = NULL;
 545
 546         if (!wpa_s)
 547                 return 0;
 548
 549         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 550                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 551                         if (s->disabled || !s->p2p_group ||
 552                             s->mode != WPAS_MODE_P2P_GO)
 553                                 continue;
 554
 555                         os_memcpy(bssid, wpa_s->own_addr, ETH_ALEN);
 556                         if (p2p_get_group_num_members(wpa_s->p2p_group))
 557                                 return s;
 558                         empty = s;
 559                 }
 560         }
 561
 562         return empty;
 563 }
 564
 565
 566 /* Find a persistent group where we are the GO */
 567 static struct wpa_ssid *
 568 wpas_p2p_get_persistent_go(struct wpa_supplicant *wpa_s)
 569 {
 570         struct wpa_ssid *s;
 571
 572         for (s = wpa_s->conf->ssid; s; s = s->next) {
 573                 if (s->disabled == 2 && s->mode == WPAS_MODE_P2P_GO)
 574                         return s;
 575         }
 576
 577         return NULL;
 578 }
 579
 580
 581 static u8 p2ps_group_capability(void *ctx, u8 incoming, u8 role)
 582 {
 583         struct wpa_supplicant *wpa_s = ctx, *tmp_wpa_s;
 584         struct wpa_ssid *s;
 585         u8 conncap = P2PS_SETUP_NONE;
 586         unsigned int owned_members = 0;
 587         unsigned int owner = 0;
 588         unsigned int client = 0;
 589         struct wpa_supplicant *go_wpa_s;
 590         struct wpa_ssid *persistent_go;
 591         int p2p_no_group_iface;
 592
 593         wpa_printf(MSG_DEBUG, "P2P: Conncap - in:%d role:%d", incoming, role);
 594
 595         /*
 596          * For non-concurrent capable devices:
 597          * If persistent_go, then no new.
 598          * If GO, then no client.
 599          * If client, then no GO.
 600          */
 601         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
 602         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
 603         p2p_no_group_iface = wpa_s->conf->p2p_no_group_iface;
 604
 605         wpa_printf(MSG_DEBUG, "P2P: GO(iface)=%p persistent(ssid)=%p",
 606                    go_wpa_s, persistent_go);
 607
 608         for (tmp_wpa_s = wpa_s->global->ifaces; tmp_wpa_s;
 609              tmp_wpa_s = tmp_wpa_s->next) {
 610                 for (s = tmp_wpa_s->conf->ssid; s; s = s->next) {
 611                         wpa_printf(MSG_DEBUG,
 612                                    "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d",
 613                                    tmp_wpa_s, s, s->disabled,
 614                                    s->p2p_group, s->mode);
 615                         if (!s->disabled && s->p2p_group) {
 616                                 if (s->mode == WPAS_MODE_P2P_GO) {
 617                                         owned_members +=
 618                                                 p2p_get_group_num_members(
 619                                                         tmp_wpa_s->p2p_group);
 620                                         owner++;
 621                                 } else
 622                                         client++;
 623                         }
 624                 }
 625         }
 626
 627         /* If not concurrent, restrict our choices */
 628         if (p2p_no_group_iface) {
 629                 wpa_printf(MSG_DEBUG, "P2P: p2p_no_group_iface");
 630
 631                 if (client)
 632                         return P2PS_SETUP_NONE;
 633
 634                 if (go_wpa_s) {
 635                         if (role == P2PS_SETUP_CLIENT ||
 636                             incoming == P2PS_SETUP_GROUP_OWNER ||
 637                             p2p_client_limit_reached(go_wpa_s->p2p_group))
 638                                 return P2PS_SETUP_NONE;
 639
 640                         return P2PS_SETUP_GROUP_OWNER;
 641                 }
 642
 643                 if (persistent_go) {
 644                         if (role == P2PS_SETUP_NONE || role == P2PS_SETUP_NEW) {
 645                                 if (!incoming)
 646                                         return P2PS_SETUP_GROUP_OWNER |
 647                                                 P2PS_SETUP_CLIENT;
 648                                 if (incoming == P2PS_SETUP_NEW) {
 649                                         u8 r;
 650
 651                                         if (os_get_random(&r, sizeof(r)) < 0 ||
 652                                             (r & 1))
 653                                                 return P2PS_SETUP_CLIENT;
 654                                         return P2PS_SETUP_GROUP_OWNER;
 655                                 }
 656                         }
 657                 }
 658         }
 659
 660         /* If a required role has been specified, handle it here */
 661         if (role && role != P2PS_SETUP_NEW) {
 662                 switch (incoming) {
 663                 case P2PS_SETUP_NONE:
 664                 case P2PS_SETUP_NEW:
 665                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 666                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 667                         conncap = role;
 668                         goto grp_owner;
 669
 670                 case P2PS_SETUP_GROUP_OWNER:
 671                         /*
 672                          * Must be a complimentary role - cannot be a client to
 673                          * more than one peer.
 674                          */
 675                         if (incoming == role || client)
 676                                 return P2PS_SETUP_NONE;
 677
 678                         return P2PS_SETUP_CLIENT;
 679
 680                 case P2PS_SETUP_CLIENT:
 681                         /* Must be a complimentary role */
 682                         if (incoming != role) {
 683                                 conncap = P2PS_SETUP_GROUP_OWNER;
 684                                 goto grp_owner;
 685                         }
 686
 687                 default:
 688                         return P2PS_SETUP_NONE;
 689                 }
 690         }
 691
 692         /*
 693          * For now, we only will support ownership of one group, and being a
 694          * client of one group. Therefore, if we have either an existing GO
 695          * group, or an existing client group, we will not do a new GO
 696          * negotiation, but rather try to re-use the existing groups.
 697          */
 698         switch (incoming) {
 699         case P2PS_SETUP_NONE:
 700         case P2PS_SETUP_NEW:
 701                 if (client)
 702                         conncap = P2PS_SETUP_GROUP_OWNER;
 703                 else if (!owned_members)
 704                         conncap = P2PS_SETUP_NEW;
 705                 else if (incoming == P2PS_SETUP_NONE)
 706                         conncap = P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT;
 707                 else
 708                         conncap = P2PS_SETUP_CLIENT;
 709                 break;
 710
 711         case P2PS_SETUP_CLIENT:
 712                 conncap = P2PS_SETUP_GROUP_OWNER;
 713                 break;
 714
 715         case P2PS_SETUP_GROUP_OWNER:
 716                 if (!client)
 717                         conncap = P2PS_SETUP_CLIENT;
 718                 break;
 719
 720         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 721         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 722                 if (client)
 723                         conncap = P2PS_SETUP_GROUP_OWNER;
 724                 else {
 725                         u8 r;
 726
 727                         if (os_get_random(&r, sizeof(r)) < 0 ||
 728                             (r & 1))
 729                                 conncap = P2PS_SETUP_CLIENT;
 730                         else
 731                                 conncap = P2PS_SETUP_GROUP_OWNER;
 732                 }
 733                 break;
 734
 735         default:
 736                 return P2PS_SETUP_NONE;
 737         }
 738
 739 grp_owner:
 740         if ((conncap & P2PS_SETUP_GROUP_OWNER) ||
 741             (!incoming && (conncap & P2PS_SETUP_NEW))) {
 742                 if (go_wpa_s && p2p_client_limit_reached(go_wpa_s->p2p_group))
 743                         conncap &= ~P2PS_SETUP_GROUP_OWNER;
 744                 wpa_printf(MSG_DEBUG, "P2P: GOs:%d members:%d conncap:%d",
 745                            owner, owned_members, conncap);
 746
 747                 s = wpas_p2p_get_persistent_go(wpa_s);
 748
 749                 if (!s && !owner && p2p_no_group_iface) {
 750                         p2p_set_intended_addr(wpa_s->global->p2p,
 751                                               wpa_s->own_addr);
 752                 } else if (!s && !owner) {
 753                         if (wpas_p2p_add_group_interface(wpa_s,
 754                                                          WPA_IF_P2P_GO) < 0) {
 755                                 wpa_printf(MSG_ERROR,
 756                                            "P2P: Failed to allocate a new interface for the group");
 757                                 return P2PS_SETUP_NONE;
 758                         }
 759                         wpa_s->global->pending_group_iface_for_p2ps = 1;
 760                         p2p_set_intended_addr(wpa_s->global->p2p,
 761                                               wpa_s->pending_interface_addr);
 762                 }
 763         }
 764
 765         return conncap;
 766 }
 767
 768
 769 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 770                                  enum p2p_group_removal_reason removal_reason)
 771 {
 772         struct wpa_ssid *ssid;
 773         char *gtype;
 774         const char *reason;
 775
 776         ssid = wpa_s->current_ssid;
 777         if (ssid == NULL) {
 778                 /*
 779                  * The current SSID was not known, but there may still be a
 780                  * pending P2P group interface waiting for provisioning or a
 781                  * P2P group that is trying to reconnect.
 782                  */
 783                 ssid = wpa_s->conf->ssid;
 784                 while (ssid) {
 785                         if (ssid->p2p_group && ssid->disabled != 2)
 786                                 break;
 787                         ssid = ssid->next;
 788                 }
 789                 if (ssid == NULL &&
 790                         wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
 791                 {
 792                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 793                                    "not found");
 794                         return -1;
 795                 }
 796         }
 797         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 798                 gtype = "GO";
 799         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 800                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 801                 wpa_s->reassociate = 0;
 802                 wpa_s->disconnected = 1;
 803                 gtype = "client";
 804         } else
 805                 gtype = "GO";
 806
 807         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 808                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 809
 810         if (os_strcmp(gtype, "client") == 0) {
 811                 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 812                 if (eloop_is_timeout_registered(wpas_p2p_psk_failure_removal,
 813                                                 wpa_s, NULL)) {
 814                         wpa_printf(MSG_DEBUG,
 815                                    "P2P: PSK failure removal was scheduled, so use PSK failure as reason for group removal");
 816                         removal_reason = P2P_GROUP_REMOVAL_PSK_FAILURE;
 817                         eloop_cancel_timeout(wpas_p2p_psk_failure_removal,
 818                                              wpa_s, NULL);
 819                 }
 820         }
 821
 822         if (wpa_s->cross_connect_in_use) {
 823                 wpa_s->cross_connect_in_use = 0;
 824                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 825                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 826                                wpa_s->ifname, wpa_s->cross_connect_uplink);
 827         }
 828         switch (removal_reason) {
 829         case P2P_GROUP_REMOVAL_REQUESTED:
 830                 reason = " reason=REQUESTED";
 831                 break;
 832         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 833                 reason = " reason=FORMATION_FAILED";
 834                 break;
 835         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 836                 reason = " reason=IDLE";
 837                 break;
 838         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 839                 reason = " reason=UNAVAILABLE";
 840                 break;
 841         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 842                 reason = " reason=GO_ENDING_SESSION";
 843                 break;
 844         case P2P_GROUP_REMOVAL_PSK_FAILURE:
 845                 reason = " reason=PSK_FAILURE";
 846                 break;
 847         case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
 848                 reason = " reason=FREQ_CONFLICT";
 849                 break;
 850         default:
 851                 reason = "";
 852                 break;
 853         }
 854         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 855                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 856                                P2P_EVENT_GROUP_REMOVED "%s %s%s",
 857                                wpa_s->ifname, gtype, reason);
 858         }
 859
 860         if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0)
 861                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout");
 862         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 863                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 864         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
 865                                  wpa_s->parent, NULL) > 0) {
 866                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
 867                            "timeout");
 868                 wpa_s->p2p_in_provisioning = 0;
 869         }
 870
 871         wpa_s->p2p_in_invitation = 0;
 872
 873         /*
 874          * Make sure wait for the first client does not remain active after the
 875          * group has been removed.
 876          */
 877         wpa_s->global->p2p_go_wait_client.sec = 0;
 878
 879         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 880                 struct wpa_global *global;
 881                 char *ifname;
 882                 enum wpa_driver_if_type type;
 883                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 884                         wpa_s->ifname);
 885                 global = wpa_s->global;
 886                 ifname = os_strdup(wpa_s->ifname);
 887                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 888                 eloop_cancel_timeout(run_wpas_p2p_disconnect, wpa_s, NULL);
 889                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 890                 wpa_s = global->ifaces;
 891                 if (wpa_s && ifname)
 892                         wpa_drv_if_remove(wpa_s, type, ifname);
 893                 os_free(ifname);
 894                 return 1;
 895         }
 896
 897         if (!wpa_s->p2p_go_group_formation_completed) {
 898                 wpa_s->global->p2p_group_formation = NULL;
 899                 wpa_s->p2p_in_provisioning = 0;
 900         }
 901
 902         wpa_s->show_group_started = 0;
 903         os_free(wpa_s->go_params);
 904         wpa_s->go_params = NULL;
 905
 906         os_free(wpa_s->p2p_group_common_freqs);
 907         wpa_s->p2p_group_common_freqs = NULL;
 908         wpa_s->p2p_group_common_freqs_num = 0;
 909
 910         wpa_s->waiting_presence_resp = 0;
 911
 912         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 913         if (ssid && (ssid->p2p_group ||
 914                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 915                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 916                 int id = ssid->id;
 917                 if (ssid == wpa_s->current_ssid) {
 918                         wpa_sm_set_config(wpa_s->wpa, NULL);
 919                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 920                         wpa_s->current_ssid = NULL;
 921                 }
 922                 /*
 923                  * Networks objects created during any P2P activities are not
 924                  * exposed out as they might/will confuse certain non-P2P aware
 925                  * applications since these network objects won't behave like
 926                  * regular ones.
 927                  *
 928                  * Likewise, we don't send out network removed signals for such
 929                  * network objects.
 930                  */
 931                 wpa_config_remove_network(wpa_s->conf, id);
 932                 wpa_supplicant_clear_status(wpa_s);
 933                 wpa_supplicant_cancel_sched_scan(wpa_s);
 934         } else {
 935                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
 936                            "found");
 937         }
 938         if (wpa_s->ap_iface)
 939                 wpa_supplicant_ap_deinit(wpa_s);
 940         else
 941                 wpa_drv_deinit_p2p_cli(wpa_s);
 942
 943         return 0;
 944 }
 945
 946
 947 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
 948                                      u8 *go_dev_addr,
 949                                      const u8 *ssid, size_t ssid_len)
 950 {
 951         struct wpa_bss *bss;
 952         const u8 *bssid;
 953         struct wpabuf *p2p;
 954         u8 group_capab;
 955         const u8 *addr;
 956
 957         if (wpa_s->go_params)
 958                 bssid = wpa_s->go_params->peer_interface_addr;
 959         else
 960                 bssid = wpa_s->bssid;
 961
 962         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
 963         if (bss == NULL && wpa_s->go_params &&
 964             !is_zero_ether_addr(wpa_s->go_params->peer_device_addr))
 965                 bss = wpa_bss_get_p2p_dev_addr(
 966                         wpa_s, wpa_s->go_params->peer_device_addr);
 967         if (bss == NULL) {
 968                 u8 iface_addr[ETH_ALEN];
 969                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
 970                                            iface_addr) == 0)
 971                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
 972         }
 973         if (bss == NULL) {
 974                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 975                            "group is persistent - BSS " MACSTR " not found",
 976                            MAC2STR(bssid));
 977                 return 0;
 978         }
 979
 980         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
 981         if (p2p == NULL)
 982                 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss,
 983                                                          P2P_IE_VENDOR_TYPE);
 984         if (p2p == NULL) {
 985                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 986                            "group is persistent - BSS " MACSTR
 987                            " did not include P2P IE", MAC2STR(bssid));
 988                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
 989                             (u8 *) (bss + 1), bss->ie_len);
 990                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
 991                             ((u8 *) bss + 1) + bss->ie_len,
 992                             bss->beacon_ie_len);
 993                 return 0;
 994         }
 995
 996         group_capab = p2p_get_group_capab(p2p);
 997         addr = p2p_get_go_dev_addr(p2p);
 998         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
 999                    "group_capab=0x%x", group_capab);
1000         if (addr) {
1001                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
1002                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
1003                            MAC2STR(addr));
1004         } else
1005                 os_memset(go_dev_addr, 0, ETH_ALEN);
1006         wpabuf_free(p2p);
1007
1008         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
1009                    "go_dev_addr=" MACSTR,
1010                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
1011
1012         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
1013 }
1014
1015
1016 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
1017                                            struct wpa_ssid *ssid,
1018                                            const u8 *go_dev_addr)
1019 {
1020         struct wpa_ssid *s;
1021         int changed = 0;
1022
1023         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
1024                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
1025         for (s = wpa_s->conf->ssid; s; s = s->next) {
1026                 if (s->disabled == 2 &&
1027                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
1028                     s->ssid_len == ssid->ssid_len &&
1029                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
1030                         break;
1031         }
1032
1033         if (s) {
1034                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
1035                            "entry");
1036                 if (ssid->passphrase && !s->passphrase)
1037                         changed = 1;
1038                 else if (ssid->passphrase && s->passphrase &&
1039                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
1040                         changed = 1;
1041         } else {
1042                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
1043                            "entry");
1044                 changed = 1;
1045                 s = wpa_config_add_network(wpa_s->conf);
1046                 if (s == NULL)
1047                         return -1;
1048
1049                 /*
1050                  * Instead of network_added we emit persistent_group_added
1051                  * notification. Also to keep the defense checks in
1052                  * persistent_group obj registration method, we set the
1053                  * relevant flags in s to designate it as a persistent group.
1054                  */
1055                 s->p2p_group = 1;
1056                 s->p2p_persistent_group = 1;
1057                 wpas_notify_persistent_group_added(wpa_s, s);
1058                 wpa_config_set_network_defaults(s);
1059         }
1060
1061         s->p2p_group = 1;
1062         s->p2p_persistent_group = 1;
1063         s->disabled = 2;
1064         s->bssid_set = 1;
1065         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
1066         s->mode = ssid->mode;
1067         s->auth_alg = WPA_AUTH_ALG_OPEN;
1068         s->key_mgmt = WPA_KEY_MGMT_PSK;
1069         s->proto = WPA_PROTO_RSN;
1070         s->pairwise_cipher = WPA_CIPHER_CCMP;
1071         s->export_keys = 1;
1072         if (ssid->passphrase) {
1073                 os_free(s->passphrase);
1074                 s->passphrase = os_strdup(ssid->passphrase);
1075         }
1076         if (ssid->psk_set) {
1077                 s->psk_set = 1;
1078                 os_memcpy(s->psk, ssid->psk, 32);
1079         }
1080         if (s->passphrase && !s->psk_set)
1081                 wpa_config_update_psk(s);
1082         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
1083                 os_free(s->ssid);
1084                 s->ssid = os_malloc(ssid->ssid_len);
1085         }
1086         if (s->ssid) {
1087                 s->ssid_len = ssid->ssid_len;
1088                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
1089         }
1090         if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
1091                 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
1092                 wpa_s->global->add_psk = NULL;
1093                 changed = 1;
1094         }
1095
1096         if (changed && wpa_s->conf->update_config &&
1097             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
1098                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1099         }
1100
1101         return s->id;
1102 }
1103
1104
1105 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
1106                                                  const u8 *addr)
1107 {
1108         struct wpa_ssid *ssid, *s;
1109         u8 *n;
1110         size_t i;
1111         int found = 0;
1112
1113         ssid = wpa_s->current_ssid;
1114         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
1115             !ssid->p2p_persistent_group)
1116                 return;
1117
1118         for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
1119                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
1120                         continue;
1121
1122                 if (s->ssid_len == ssid->ssid_len &&
1123                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
1124                         break;
1125         }
1126
1127         if (s == NULL)
1128                 return;
1129
1130         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
1131                 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, addr,
1132                               ETH_ALEN) != 0)
1133                         continue;
1134
1135                 if (i == s->num_p2p_clients - 1)
1136                         return; /* already the most recent entry */
1137
1138                 /* move the entry to mark it most recent */
1139                 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
1140                            s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
1141                            (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
1142                 os_memcpy(s->p2p_client_list +
1143                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN, addr,
1144                           ETH_ALEN);
1145                 os_memset(s->p2p_client_list +
1146                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1147                           0xff, ETH_ALEN);
1148                 found = 1;
1149                 break;
1150         }
1151
1152         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
1153                 n = os_realloc_array(s->p2p_client_list,
1154                                      s->num_p2p_clients + 1, 2 * ETH_ALEN);
1155                 if (n == NULL)
1156                         return;
1157                 os_memcpy(n + s->num_p2p_clients * 2 * ETH_ALEN, addr,
1158                           ETH_ALEN);
1159                 os_memset(n + s->num_p2p_clients * 2 * ETH_ALEN + ETH_ALEN,
1160                           0xff, ETH_ALEN);
1161                 s->p2p_client_list = n;
1162                 s->num_p2p_clients++;
1163         } else if (!found && s->p2p_client_list) {
1164                 /* Not enough room for an additional entry - drop the oldest
1165                  * entry */
1166                 os_memmove(s->p2p_client_list,
1167                            s->p2p_client_list + 2 * ETH_ALEN,
1168                            (s->num_p2p_clients - 1) * 2 * ETH_ALEN);
1169                 os_memcpy(s->p2p_client_list +
1170                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN,
1171                           addr, ETH_ALEN);
1172                 os_memset(s->p2p_client_list +
1173                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1174                           0xff, ETH_ALEN);
1175         }
1176
1177         if (wpa_s->parent->conf->update_config &&
1178             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
1179                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1180 }
1181
1182
1183 static void wpas_p2p_group_started(struct wpa_supplicant *wpa_s,
1184                                    int go, struct wpa_ssid *ssid, int freq,
1185                                    const u8 *psk, const char *passphrase,
1186                                    const u8 *go_dev_addr, int persistent,
1187                                    const char *extra)
1188 {
1189         const char *ssid_txt;
1190         char psk_txt[65];
1191
1192         if (psk)
1193                 wpa_snprintf_hex(psk_txt, sizeof(psk_txt), psk, 32);
1194         else
1195                 psk_txt[0] = '\0';
1196
1197         if (ssid)
1198                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
1199         else
1200                 ssid_txt = "";
1201
1202         if (passphrase && passphrase[0] == '\0')
1203                 passphrase = NULL;
1204
1205         /*
1206          * Include PSK/passphrase only in the control interface message and
1207          * leave it out from the debug log entry.
1208          */
1209         wpa_msg_global_ctrl(wpa_s->parent, MSG_INFO,
1210                             P2P_EVENT_GROUP_STARTED
1211                             "%s %s ssid=\"%s\" freq=%d%s%s%s%s%s go_dev_addr="
1212                             MACSTR "%s%s",
1213                             wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1214                             psk ? " psk=" : "", psk_txt,
1215                             passphrase ? " passphrase=\"" : "",
1216                             passphrase ? passphrase : "",
1217                             passphrase ? "\"" : "",
1218                             MAC2STR(go_dev_addr),
1219                             persistent ? " [PERSISTENT]" : "", extra);
1220         wpa_printf(MSG_INFO, P2P_EVENT_GROUP_STARTED
1221                    "%s %s ssid=\"%s\" freq=%d go_dev_addr=" MACSTR "%s%s",
1222                    wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1223                    MAC2STR(go_dev_addr), persistent ? " [PERSISTENT]" : "",
1224                    extra);
1225 }
1226
1227
1228 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
1229                                            int success)
1230 {
1231         struct wpa_ssid *ssid;
1232         int client;
1233         int persistent;
1234         u8 go_dev_addr[ETH_ALEN];
1235         int network_id = -1;
1236
1237         /*
1238          * This callback is likely called for the main interface. Update wpa_s
1239          * to use the group interface if a new interface was created for the
1240          * group.
1241          */
1242         if (wpa_s->global->p2p_group_formation)
1243                 wpa_s = wpa_s->global->p2p_group_formation;
1244         if (wpa_s->p2p_go_group_formation_completed) {
1245                 wpa_s->global->p2p_group_formation = NULL;
1246                 wpa_s->p2p_in_provisioning = 0;
1247         }
1248         wpa_s->p2p_in_invitation = 0;
1249         wpa_s->group_formation_reported = 1;
1250
1251         if (!success) {
1252                 wpa_msg_global(wpa_s->parent, MSG_INFO,
1253                                P2P_EVENT_GROUP_FORMATION_FAILURE);
1254                 wpas_p2p_group_delete(wpa_s,
1255                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
1256                 return;
1257         }
1258
1259         wpa_msg_global(wpa_s->parent, MSG_INFO,
1260                        P2P_EVENT_GROUP_FORMATION_SUCCESS);
1261
1262         ssid = wpa_s->current_ssid;
1263         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
1264                 ssid->mode = WPAS_MODE_P2P_GO;
1265                 p2p_group_notif_formation_done(wpa_s->p2p_group);
1266                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
1267         }
1268
1269         persistent = 0;
1270         if (ssid) {
1271                 client = ssid->mode == WPAS_MODE_INFRA;
1272                 if (ssid->mode == WPAS_MODE_P2P_GO) {
1273                         persistent = ssid->p2p_persistent_group;
1274                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
1275                                   ETH_ALEN);
1276                 } else
1277                         persistent = wpas_p2p_persistent_group(wpa_s,
1278                                                                go_dev_addr,
1279                                                                ssid->ssid,
1280                                                                ssid->ssid_len);
1281         } else {
1282                 client = wpa_s->p2p_group_interface ==
1283                         P2P_GROUP_INTERFACE_CLIENT;
1284                 os_memset(go_dev_addr, 0, ETH_ALEN);
1285         }
1286
1287         wpa_s->show_group_started = 0;
1288         if (client) {
1289                 /*
1290                  * Indicate event only after successfully completed 4-way
1291                  * handshake, i.e., when the interface is ready for data
1292                  * packets.
1293                  */
1294                 wpa_s->show_group_started = 1;
1295         } else {
1296                 wpas_p2p_group_started(wpa_s, 1, ssid,
1297                                        ssid ? ssid->frequency : 0,
1298                                        ssid && ssid->passphrase == NULL &&
1299                                        ssid->psk_set ? ssid->psk : NULL,
1300                                        ssid ? ssid->passphrase : NULL,
1301                                        go_dev_addr, persistent, "");
1302                 wpas_p2p_cross_connect_setup(wpa_s);
1303                 wpas_p2p_set_group_idle_timeout(wpa_s);
1304         }
1305
1306         if (persistent)
1307                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
1308                                                              ssid, go_dev_addr);
1309         else {
1310                 os_free(wpa_s->global->add_psk);
1311                 wpa_s->global->add_psk = NULL;
1312         }
1313         if (network_id < 0 && ssid)
1314                 network_id = ssid->id;
1315         if (!client) {
1316                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1317                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1318         }
1319 }
1320
1321
1322 struct send_action_work {
1323         unsigned int freq;
1324         u8 dst[ETH_ALEN];
1325         u8 src[ETH_ALEN];
1326         u8 bssid[ETH_ALEN];
1327         size_t len;
1328         unsigned int wait_time;
1329         u8 buf[0];
1330 };
1331
1332
1333 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
1334                                               void *timeout_ctx)
1335 {
1336         struct wpa_supplicant *wpa_s = eloop_ctx;
1337
1338         if (!wpa_s->p2p_send_action_work)
1339                 return;
1340
1341         wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
1342         os_free(wpa_s->p2p_send_action_work->ctx);
1343         radio_work_done(wpa_s->p2p_send_action_work);
1344         wpa_s->p2p_send_action_work = NULL;
1345 }
1346
1347
1348 static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s)
1349 {
1350         if (wpa_s->p2p_send_action_work) {
1351                 struct send_action_work *awork;
1352                 awork = wpa_s->p2p_send_action_work->ctx;
1353                 if (awork->wait_time == 0) {
1354                         os_free(awork);
1355                         radio_work_done(wpa_s->p2p_send_action_work);
1356                         wpa_s->p2p_send_action_work = NULL;
1357                 } else {
1358                         /*
1359                          * In theory, this should not be needed, but number of
1360                          * places in the P2P code is still using non-zero wait
1361                          * time for the last Action frame in the sequence and
1362                          * some of these do not call send_action_done().
1363                          */
1364                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1365                                              wpa_s, NULL);
1366                         eloop_register_timeout(
1367                                 0, awork->wait_time * 1000,
1368                                 wpas_p2p_send_action_work_timeout,
1369                                 wpa_s, NULL);
1370                 }
1371         }
1372 }
1373
1374
1375 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
1376                                            unsigned int freq,
1377                                            const u8 *dst, const u8 *src,
1378                                            const u8 *bssid,
1379                                            const u8 *data, size_t data_len,
1380                                            enum offchannel_send_action_result
1381                                            result)
1382 {
1383         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
1384
1385         wpas_p2p_action_tx_clear(wpa_s);
1386
1387         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
1388                 return;
1389
1390         switch (result) {
1391         case OFFCHANNEL_SEND_ACTION_SUCCESS:
1392                 res = P2P_SEND_ACTION_SUCCESS;
1393                 break;
1394         case OFFCHANNEL_SEND_ACTION_NO_ACK:
1395                 res = P2P_SEND_ACTION_NO_ACK;
1396                 break;
1397         case OFFCHANNEL_SEND_ACTION_FAILED:
1398                 res = P2P_SEND_ACTION_FAILED;
1399                 break;
1400         }
1401
1402         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
1403
1404         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
1405             wpa_s->pending_pd_before_join &&
1406             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
1407              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
1408             wpa_s->p2p_fallback_to_go_neg) {
1409                 wpa_s->pending_pd_before_join = 0;
1410                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
1411                         "during p2p_connect-auto");
1412                 wpa_msg_global(wpa_s->parent, MSG_INFO,
1413                                P2P_EVENT_FALLBACK_TO_GO_NEG
1414                                "reason=no-ACK-to-PD-Req");
1415                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
1416                 return;
1417         }
1418 }
1419
1420
1421 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
1422 {
1423         struct wpa_supplicant *wpa_s = work->wpa_s;
1424         struct send_action_work *awork = work->ctx;
1425
1426         if (deinit) {
1427                 if (work->started) {
1428                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1429                                              wpa_s, NULL);
1430                         wpa_s->p2p_send_action_work = NULL;
1431                         offchannel_send_action_done(wpa_s);
1432                 }
1433                 os_free(awork);
1434                 return;
1435         }
1436
1437         if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1438                                    awork->bssid, awork->buf, awork->len,
1439                                    awork->wait_time,
1440                                    wpas_p2p_send_action_tx_status, 1) < 0) {
1441                 os_free(awork);
1442                 radio_work_done(work);
1443                 return;
1444         }
1445         wpa_s->p2p_send_action_work = work;
1446 }
1447
1448
1449 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1450                                  unsigned int freq, const u8 *dst,
1451                                  const u8 *src, const u8 *bssid, const u8 *buf,
1452                                  size_t len, unsigned int wait_time)
1453 {
1454         struct send_action_work *awork;
1455
1456         if (wpa_s->p2p_send_action_work) {
1457                 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1458                 return -1;
1459         }
1460
1461         awork = os_zalloc(sizeof(*awork) + len);
1462         if (awork == NULL)
1463                 return -1;
1464
1465         awork->freq = freq;
1466         os_memcpy(awork->dst, dst, ETH_ALEN);
1467         os_memcpy(awork->src, src, ETH_ALEN);
1468         os_memcpy(awork->bssid, bssid, ETH_ALEN);
1469         awork->len = len;
1470         awork->wait_time = wait_time;
1471         os_memcpy(awork->buf, buf, len);
1472
1473         if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
1474                            wpas_send_action_cb, awork) < 0) {
1475                 os_free(awork);
1476                 return -1;
1477         }
1478
1479         return 0;
1480 }
1481
1482
1483 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1484                             const u8 *src, const u8 *bssid, const u8 *buf,
1485                             size_t len, unsigned int wait_time)
1486 {
1487         struct wpa_supplicant *wpa_s = ctx;
1488         int listen_freq = -1, send_freq = -1;
1489
1490         if (wpa_s->p2p_listen_work)
1491                 listen_freq = wpa_s->p2p_listen_work->freq;
1492         if (wpa_s->p2p_send_action_work)
1493                 send_freq = wpa_s->p2p_send_action_work->freq;
1494         if (listen_freq != (int) freq && send_freq != (int) freq) {
1495                 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)",
1496                            listen_freq, send_freq);
1497                 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1498                                              len, wait_time);
1499         }
1500
1501         wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1502         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1503                                       wait_time,
1504                                       wpas_p2p_send_action_tx_status, 1);
1505 }
1506
1507
1508 static void wpas_send_action_done(void *ctx)
1509 {
1510         struct wpa_supplicant *wpa_s = ctx;
1511
1512         if (wpa_s->p2p_send_action_work) {
1513                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1514                                      wpa_s, NULL);
1515                 os_free(wpa_s->p2p_send_action_work->ctx);
1516                 radio_work_done(wpa_s->p2p_send_action_work);
1517                 wpa_s->p2p_send_action_work = NULL;
1518         }
1519
1520         offchannel_send_action_done(wpa_s);
1521 }
1522
1523
1524 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1525                                     struct p2p_go_neg_results *params)
1526 {
1527         if (wpa_s->go_params == NULL) {
1528                 wpa_s->go_params = os_malloc(sizeof(*params));
1529                 if (wpa_s->go_params == NULL)
1530                         return -1;
1531         }
1532         os_memcpy(wpa_s->go_params, params, sizeof(*params));
1533         return 0;
1534 }
1535
1536
1537 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1538                                     struct p2p_go_neg_results *res)
1539 {
1540         wpa_s->group_formation_reported = 0;
1541         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
1542                    " dev_addr " MACSTR " wps_method %d",
1543                    MAC2STR(res->peer_interface_addr),
1544                    MAC2STR(res->peer_device_addr), res->wps_method);
1545         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1546                           res->ssid, res->ssid_len);
1547         wpa_supplicant_ap_deinit(wpa_s);
1548         wpas_copy_go_neg_results(wpa_s, res);
1549         if (res->wps_method == WPS_PBC) {
1550                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
1551 #ifdef CONFIG_WPS_NFC
1552         } else if (res->wps_method == WPS_NFC) {
1553                 wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
1554                                    res->peer_interface_addr,
1555                                    wpa_s->parent->p2p_oob_dev_pw,
1556                                    wpa_s->parent->p2p_oob_dev_pw_id, 1,
1557                                    wpa_s->parent->p2p_oob_dev_pw_id ==
1558                                    DEV_PW_NFC_CONNECTION_HANDOVER ?
1559                                    wpa_s->parent->p2p_peer_oob_pubkey_hash :
1560                                    NULL,
1561                                    NULL, 0, 0);
1562 #endif /* CONFIG_WPS_NFC */
1563         } else {
1564                 u16 dev_pw_id = DEV_PW_DEFAULT;
1565                 if (wpa_s->p2p_wps_method == WPS_P2PS)
1566                         dev_pw_id = DEV_PW_P2PS_DEFAULT;
1567                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1568                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1569                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1570                                    wpa_s->p2p_pin, 1, dev_pw_id);
1571         }
1572 }
1573
1574
1575 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1576                                   struct wpa_ssid *ssid)
1577 {
1578         struct wpa_ssid *persistent;
1579         struct psk_list_entry *psk;
1580         struct hostapd_data *hapd;
1581
1582         if (!wpa_s->ap_iface)
1583                 return;
1584
1585         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
1586                                              ssid->ssid_len);
1587         if (persistent == NULL)
1588                 return;
1589
1590         hapd = wpa_s->ap_iface->bss[0];
1591
1592         dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1593                          list) {
1594                 struct hostapd_wpa_psk *hpsk;
1595
1596                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1597                         MACSTR " psk=%d",
1598                         MAC2STR(psk->addr), psk->p2p);
1599                 hpsk = os_zalloc(sizeof(*hpsk));
1600                 if (hpsk == NULL)
1601                         break;
1602                 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1603                 if (psk->p2p)
1604                         os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1605                 else
1606                         os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1607                 hpsk->next = hapd->conf->ssid.wpa_psk;
1608                 hapd->conf->ssid.wpa_psk = hpsk;
1609         }
1610 }
1611
1612
1613 static void p2p_go_dump_common_freqs(struct wpa_supplicant *wpa_s)
1614 {
1615         unsigned int i;
1616
1617         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Common group frequencies (len=%u):",
1618                 wpa_s->p2p_group_common_freqs_num);
1619
1620         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++)
1621                 wpa_dbg(wpa_s, MSG_DEBUG, "freq[%u]: %d",
1622                         i, wpa_s->p2p_group_common_freqs[i]);
1623 }
1624
1625
1626 static void p2p_go_save_group_common_freqs(struct wpa_supplicant *wpa_s,
1627                                            struct p2p_go_neg_results *params)
1628 {
1629         unsigned int i, len = int_array_len(wpa_s->go_params->freq_list);
1630
1631         wpa_s->p2p_group_common_freqs_num = 0;
1632         os_free(wpa_s->p2p_group_common_freqs);
1633         wpa_s->p2p_group_common_freqs = os_calloc(len, sizeof(int));
1634         if (!wpa_s->p2p_group_common_freqs)
1635                 return;
1636
1637         for (i = 0; i < len; i++) {
1638                 if (!wpa_s->go_params->freq_list[i])
1639                         break;
1640                 wpa_s->p2p_group_common_freqs[i] =
1641                         wpa_s->go_params->freq_list[i];
1642         }
1643         wpa_s->p2p_group_common_freqs_num = i;
1644 }
1645
1646
1647 static void p2p_config_write(struct wpa_supplicant *wpa_s)
1648 {
1649 #ifndef CONFIG_NO_CONFIG_WRITE
1650         if (wpa_s->parent->conf->update_config &&
1651             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
1652                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1653 #endif /* CONFIG_NO_CONFIG_WRITE */
1654 }
1655
1656
1657 static void p2p_go_configured(void *ctx, void *data)
1658 {
1659         struct wpa_supplicant *wpa_s = ctx;
1660         struct p2p_go_neg_results *params = data;
1661         struct wpa_ssid *ssid;
1662         int network_id = -1;
1663
1664         p2p_go_save_group_common_freqs(wpa_s, params);
1665         p2p_go_dump_common_freqs(wpa_s);
1666
1667         ssid = wpa_s->current_ssid;
1668         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1669                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1670                 if (wpa_s->global->p2p_group_formation == wpa_s)
1671                         wpa_s->global->p2p_group_formation = NULL;
1672                 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency,
1673                                        params->passphrase[0] == '\0' ?
1674                                        params->psk : NULL,
1675                                        params->passphrase,
1676                                        wpa_s->global->p2p_dev_addr,
1677                                        params->persistent_group, "");
1678                 wpa_s->group_formation_reported = 1;
1679
1680                 if (wpa_s->parent->p2ps_join_addr_valid) {
1681                         wpa_dbg(wpa_s, MSG_DEBUG,
1682                                 "P2PS: Setting default PIN for " MACSTR,
1683                                 MAC2STR(wpa_s->parent->p2ps_join_addr));
1684                         wpa_supplicant_ap_wps_pin(wpa_s,
1685                                                   wpa_s->parent->p2ps_join_addr,
1686                                                   "12345670", NULL, 0, 0);
1687                         wpa_s->parent->p2ps_join_addr_valid = 0;
1688                 }
1689
1690                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1691                 if (params->persistent_group) {
1692                         network_id = wpas_p2p_store_persistent_group(
1693                                 wpa_s->parent, ssid,
1694                                 wpa_s->global->p2p_dev_addr);
1695                         wpas_p2p_add_psk_list(wpa_s, ssid);
1696                 }
1697                 if (network_id < 0)
1698                         network_id = ssid->id;
1699                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1700                 wpas_p2p_cross_connect_setup(wpa_s);
1701                 wpas_p2p_set_group_idle_timeout(wpa_s);
1702
1703                 if (wpa_s->p2p_first_connection_timeout) {
1704                         wpa_dbg(wpa_s, MSG_DEBUG,
1705                                 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1706                                 wpa_s->p2p_first_connection_timeout);
1707                         wpa_s->p2p_go_group_formation_completed = 0;
1708                         wpa_s->global->p2p_group_formation = wpa_s;
1709                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1710                                              wpa_s->parent, NULL);
1711                         eloop_register_timeout(
1712                                 wpa_s->p2p_first_connection_timeout, 0,
1713                                 wpas_p2p_group_formation_timeout,
1714                                 wpa_s->parent, NULL);
1715                 }
1716
1717                 return;
1718         }
1719
1720         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1721         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1722                                               params->peer_interface_addr)) {
1723                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1724                            "filtering");
1725                 return;
1726         }
1727         if (params->wps_method == WPS_PBC) {
1728                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1729                                           params->peer_device_addr);
1730 #ifdef CONFIG_WPS_NFC
1731         } else if (params->wps_method == WPS_NFC) {
1732                 if (wpa_s->parent->p2p_oob_dev_pw_id !=
1733                     DEV_PW_NFC_CONNECTION_HANDOVER &&
1734                     !wpa_s->parent->p2p_oob_dev_pw) {
1735                         wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1736                         return;
1737                 }
1738                 wpas_ap_wps_add_nfc_pw(
1739                         wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
1740                         wpa_s->parent->p2p_oob_dev_pw,
1741                         wpa_s->parent->p2p_peer_oob_pk_hash_known ?
1742                         wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
1743 #endif /* CONFIG_WPS_NFC */
1744         } else if (wpa_s->p2p_pin[0])
1745                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1746                                           wpa_s->p2p_pin, NULL, 0, 0);
1747         os_free(wpa_s->go_params);
1748         wpa_s->go_params = NULL;
1749 }
1750
1751
1752 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1753                               struct p2p_go_neg_results *params,
1754                               int group_formation)
1755 {
1756         struct wpa_ssid *ssid;
1757
1758         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1759         if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1760                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1761                         "results");
1762                 return;
1763         }
1764
1765         ssid = wpa_config_add_network(wpa_s->conf);
1766         if (ssid == NULL) {
1767                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1768                 return;
1769         }
1770
1771         wpa_s->show_group_started = 0;
1772         wpa_s->p2p_go_group_formation_completed = 0;
1773         wpa_s->group_formation_reported = 0;
1774
1775         wpa_config_set_network_defaults(ssid);
1776         ssid->temporary = 1;
1777         ssid->p2p_group = 1;
1778         ssid->p2p_persistent_group = params->persistent_group;
1779         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1780                 WPAS_MODE_P2P_GO;
1781         ssid->frequency = params->freq;
1782         ssid->ht40 = params->ht40;
1783         ssid->vht = params->vht;
1784         ssid->ssid = os_zalloc(params->ssid_len + 1);
1785         if (ssid->ssid) {
1786                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1787                 ssid->ssid_len = params->ssid_len;
1788         }
1789         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1790         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1791         ssid->proto = WPA_PROTO_RSN;
1792         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1793         ssid->group_cipher = WPA_CIPHER_CCMP;
1794         if (params->freq > 56160) {
1795                 /*
1796                  * Enable GCMP instead of CCMP as pairwise_cipher and
1797                  * group_cipher in 60 GHz.
1798                  */
1799                 ssid->pairwise_cipher = WPA_CIPHER_GCMP;
1800                 ssid->group_cipher = WPA_CIPHER_GCMP;
1801         }
1802         if (os_strlen(params->passphrase) > 0) {
1803                 ssid->passphrase = os_strdup(params->passphrase);
1804                 if (ssid->passphrase == NULL) {
1805                         wpa_msg_global(wpa_s, MSG_ERROR,
1806                                        "P2P: Failed to copy passphrase for GO");
1807                         wpa_config_remove_network(wpa_s->conf, ssid->id);
1808                         return;
1809                 }
1810         } else
1811                 ssid->passphrase = NULL;
1812         ssid->psk_set = params->psk_set;
1813         if (ssid->psk_set)
1814                 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1815         else if (ssid->passphrase)
1816                 wpa_config_update_psk(ssid);
1817         ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
1818
1819         wpa_s->ap_configured_cb = p2p_go_configured;
1820         wpa_s->ap_configured_cb_ctx = wpa_s;
1821         wpa_s->ap_configured_cb_data = wpa_s->go_params;
1822         wpa_s->scan_req = NORMAL_SCAN_REQ;
1823         wpa_s->connect_without_scan = ssid;
1824         wpa_s->reassociate = 1;
1825         wpa_s->disconnected = 0;
1826         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1827                 "start GO)");
1828         wpa_supplicant_req_scan(wpa_s, 0, 0);
1829 }
1830
1831
1832 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1833                                   const struct wpa_supplicant *src)
1834 {
1835         struct wpa_config *d;
1836         const struct wpa_config *s;
1837
1838         d = dst->conf;
1839         s = src->conf;
1840
1841 #define C(n) if (s->n) d->n = os_strdup(s->n)
1842         C(device_name);
1843         C(manufacturer);
1844         C(model_name);
1845         C(model_number);
1846         C(serial_number);
1847         C(config_methods);
1848 #undef C
1849
1850         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1851         os_memcpy(d->sec_device_type, s->sec_device_type,
1852                   sizeof(d->sec_device_type));
1853         d->num_sec_device_types = s->num_sec_device_types;
1854
1855         d->p2p_group_idle = s->p2p_group_idle;
1856         d->p2p_intra_bss = s->p2p_intra_bss;
1857         d->persistent_reconnect = s->persistent_reconnect;
1858         d->max_num_sta = s->max_num_sta;
1859         d->pbc_in_m1 = s->pbc_in_m1;
1860         d->ignore_old_scan_res = s->ignore_old_scan_res;
1861         d->beacon_int = s->beacon_int;
1862         d->dtim_period = s->dtim_period;
1863         d->p2p_go_ctwindow = s->p2p_go_ctwindow;
1864         d->disassoc_low_ack = s->disassoc_low_ack;
1865         d->disable_scan_offload = s->disable_scan_offload;
1866         d->passive_scan = s->passive_scan;
1867
1868         if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey) {
1869                 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
1870                 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
1871         }
1872 }
1873
1874
1875 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
1876                                       char *ifname, size_t len)
1877 {
1878         char *ifname_ptr = wpa_s->ifname;
1879
1880         if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
1881                        os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
1882                 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
1883         }
1884
1885         os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
1886         if (os_strlen(ifname) >= IFNAMSIZ &&
1887             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
1888                 int res;
1889
1890                 /* Try to avoid going over the IFNAMSIZ length limit */
1891                 res = os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
1892                 if (os_snprintf_error(len, res) && len)
1893                         ifname[len - 1] = '\0';
1894         }
1895 }
1896
1897
1898 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
1899                                         enum wpa_driver_if_type type)
1900 {
1901         char ifname[120], force_ifname[120];
1902
1903         if (wpa_s->pending_interface_name[0]) {
1904                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
1905                            "- skip creation of a new one");
1906                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
1907                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
1908                                    "unknown?! ifname='%s'",
1909                                    wpa_s->pending_interface_name);
1910                         return -1;
1911                 }
1912                 return 0;
1913         }
1914
1915         wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
1916         force_ifname[0] = '\0';
1917
1918         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
1919                    ifname);
1920         wpa_s->p2p_group_idx++;
1921
1922         wpa_s->pending_interface_type = type;
1923         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
1924                            wpa_s->pending_interface_addr, NULL) < 0) {
1925                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
1926                            "interface");
1927                 return -1;
1928         }
1929
1930         if (force_ifname[0]) {
1931                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
1932                            force_ifname);
1933                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
1934                            sizeof(wpa_s->pending_interface_name));
1935         } else
1936                 os_strlcpy(wpa_s->pending_interface_name, ifname,
1937                            sizeof(wpa_s->pending_interface_name));
1938         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
1939                    MACSTR, wpa_s->pending_interface_name,
1940                    MAC2STR(wpa_s->pending_interface_addr));
1941
1942         return 0;
1943 }
1944
1945
1946 static void wpas_p2p_remove_pending_group_interface(
1947         struct wpa_supplicant *wpa_s)
1948 {
1949         if (!wpa_s->pending_interface_name[0] ||
1950             is_zero_ether_addr(wpa_s->pending_interface_addr))
1951                 return; /* No pending virtual interface */
1952
1953         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
1954                    wpa_s->pending_interface_name);
1955         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
1956                           wpa_s->pending_interface_name);
1957         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1958         wpa_s->pending_interface_name[0] = '\0';
1959         wpa_s->global->pending_group_iface_for_p2ps = 0;
1960 }
1961
1962
1963 static struct wpa_supplicant *
1964 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
1965 {
1966         struct wpa_interface iface;
1967         struct wpa_supplicant *group_wpa_s;
1968
1969         if (!wpa_s->pending_interface_name[0]) {
1970                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
1971                 if (!wpas_p2p_create_iface(wpa_s))
1972                         return NULL;
1973                 /*
1974                  * Something has forced us to remove the pending interface; try
1975                  * to create a new one and hope for the best that we will get
1976                  * the same local address.
1977                  */
1978                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
1979                                                  WPA_IF_P2P_CLIENT) < 0)
1980                         return NULL;
1981         }
1982
1983         os_memset(&iface, 0, sizeof(iface));
1984         iface.ifname = wpa_s->pending_interface_name;
1985         iface.driver = wpa_s->driver->name;
1986         if (wpa_s->conf->ctrl_interface == NULL &&
1987             wpa_s->parent != wpa_s &&
1988             wpa_s->p2p_mgmt &&
1989             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
1990                 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
1991         else
1992                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
1993         iface.driver_param = wpa_s->conf->driver_param;
1994         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
1995         if (group_wpa_s == NULL) {
1996                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
1997                            "wpa_supplicant interface");
1998                 return NULL;
1999         }
2000         wpa_s->pending_interface_name[0] = '\0';
2001         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
2002                 P2P_GROUP_INTERFACE_CLIENT;
2003         wpa_s->global->p2p_group_formation = group_wpa_s;
2004         wpa_s->global->pending_group_iface_for_p2ps = 0;
2005
2006         wpas_p2p_clone_config(group_wpa_s, wpa_s);
2007
2008         return group_wpa_s;
2009 }
2010
2011
2012 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
2013                                              void *timeout_ctx)
2014 {
2015         struct wpa_supplicant *wpa_s = eloop_ctx;
2016         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
2017         wpas_p2p_group_formation_failed(wpa_s);
2018 }
2019
2020
2021 void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s)
2022 {
2023         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2024                              wpa_s->parent, NULL);
2025         if (wpa_s->global->p2p)
2026                 p2p_group_formation_failed(wpa_s->global->p2p);
2027         wpas_group_formation_completed(wpa_s, 0);
2028 }
2029
2030
2031 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
2032 {
2033         wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
2034         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2035                              wpa_s->parent, NULL);
2036         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2037                                wpa_s->parent, NULL);
2038         wpa_s->global->p2p_fail_on_wps_complete = 0;
2039 }
2040
2041
2042 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
2043 {
2044         if (wpa_s->global->p2p_group_formation != wpa_s)
2045                 return;
2046         /* Speed up group formation timeout since this cannot succeed */
2047         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2048                              wpa_s->parent, NULL);
2049         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2050                                wpa_s->parent, NULL);
2051 }
2052
2053
2054 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
2055 {
2056         struct wpa_supplicant *wpa_s = ctx;
2057
2058         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2059                 wpa_drv_cancel_remain_on_channel(wpa_s);
2060                 wpa_s->off_channel_freq = 0;
2061                 wpa_s->roc_waiting_drv_freq = 0;
2062         }
2063
2064         if (res->status) {
2065                 wpa_msg_global(wpa_s, MSG_INFO,
2066                                P2P_EVENT_GO_NEG_FAILURE "status=%d",
2067                                res->status);
2068                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
2069                 wpas_p2p_remove_pending_group_interface(wpa_s);
2070                 return;
2071         }
2072
2073         if (wpa_s->p2p_go_ht40)
2074                 res->ht40 = 1;
2075         if (wpa_s->p2p_go_vht)
2076                 res->vht = 1;
2077
2078         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
2079                        "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
2080                        " wps_method=%s",
2081                        res->role_go ? "GO" : "client", res->freq, res->ht40,
2082                        MAC2STR(res->peer_device_addr),
2083                        MAC2STR(res->peer_interface_addr),
2084                        p2p_wps_method_text(res->wps_method));
2085         wpas_notify_p2p_go_neg_completed(wpa_s, res);
2086
2087         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
2088                 struct wpa_ssid *ssid;
2089                 ssid = wpa_config_get_network(wpa_s->conf,
2090                                               wpa_s->p2p_persistent_id);
2091                 if (ssid && ssid->disabled == 2 &&
2092                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
2093                         size_t len = os_strlen(ssid->passphrase);
2094                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
2095                                    "on requested persistent group");
2096                         os_memcpy(res->passphrase, ssid->passphrase, len);
2097                         res->passphrase[len] = '\0';
2098                 }
2099         }
2100
2101         if (wpa_s->create_p2p_iface) {
2102                 struct wpa_supplicant *group_wpa_s =
2103                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
2104                 if (group_wpa_s == NULL) {
2105                         wpas_p2p_remove_pending_group_interface(wpa_s);
2106                         eloop_cancel_timeout(wpas_p2p_long_listen_timeout,
2107                                              wpa_s, NULL);
2108                         wpas_p2p_group_formation_failed(wpa_s);
2109                         return;
2110                 }
2111                 if (group_wpa_s != wpa_s) {
2112                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
2113                                   sizeof(group_wpa_s->p2p_pin));
2114                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
2115                 }
2116                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2117                 wpa_s->pending_interface_name[0] = '\0';
2118                 group_wpa_s->p2p_in_provisioning = 1;
2119
2120                 if (res->role_go)
2121                         wpas_start_wps_go(group_wpa_s, res, 1);
2122                 else
2123                         wpas_start_wps_enrollee(group_wpa_s, res);
2124         } else {
2125                 wpa_s->p2p_in_provisioning = 1;
2126                 wpa_s->global->p2p_group_formation = wpa_s;
2127
2128                 if (res->role_go)
2129                         wpas_start_wps_go(wpa_s, res, 1);
2130                 else
2131                         wpas_start_wps_enrollee(ctx, res);
2132         }
2133
2134         wpa_s->p2p_long_listen = 0;
2135         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2136
2137         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2138         eloop_register_timeout(15 + res->peer_config_timeout / 100,
2139                                (res->peer_config_timeout % 100) * 10000,
2140                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
2141 }
2142
2143
2144 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id)
2145 {
2146         struct wpa_supplicant *wpa_s = ctx;
2147         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
2148                        " dev_passwd_id=%u", MAC2STR(src), dev_passwd_id);
2149
2150         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id);
2151 }
2152
2153
2154 static void wpas_dev_found(void *ctx, const u8 *addr,
2155                            const struct p2p_peer_info *info,
2156                            int new_device)
2157 {
2158 #ifndef CONFIG_NO_STDOUT_DEBUG
2159         struct wpa_supplicant *wpa_s = ctx;
2160         char devtype[WPS_DEV_TYPE_BUFSIZE];
2161         char *wfd_dev_info_hex = NULL;
2162
2163 #ifdef CONFIG_WIFI_DISPLAY
2164         wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
2165                                                     WFD_SUBELEM_DEVICE_INFO);
2166 #endif /* CONFIG_WIFI_DISPLAY */
2167
2168         if (info->p2ps_instance) {
2169                 char str[256];
2170                 const u8 *buf = wpabuf_head(info->p2ps_instance);
2171                 size_t len = wpabuf_len(info->p2ps_instance);
2172
2173                 while (len) {
2174                         u32 id;
2175                         u16 methods;
2176                         u8 str_len;
2177
2178                         if (len < 4 + 2 + 1)
2179                                 break;
2180                         id = WPA_GET_LE32(buf);
2181                         buf += sizeof(u32);
2182                         methods = WPA_GET_BE16(buf);
2183                         buf += sizeof(u16);
2184                         str_len = *buf++;
2185                         if (str_len > len - 4 - 2 - 1)
2186                                 break;
2187                         os_memcpy(str, buf, str_len);
2188                         str[str_len] = '\0';
2189                         buf += str_len;
2190                         len -= str_len + sizeof(u32) + sizeof(u16) + sizeof(u8);
2191
2192                         wpa_msg_global(wpa_s, MSG_INFO,
2193                                        P2P_EVENT_DEVICE_FOUND MACSTR
2194                                        " p2p_dev_addr=" MACSTR
2195                                        " pri_dev_type=%s name='%s'"
2196                                        " config_methods=0x%x"
2197                                        " dev_capab=0x%x"
2198                                        " group_capab=0x%x"
2199                                        " adv_id=%x asp_svc=%s%s",
2200                                        MAC2STR(addr),
2201                                        MAC2STR(info->p2p_device_addr),
2202                                        wps_dev_type_bin2str(
2203                                                info->pri_dev_type,
2204                                                devtype, sizeof(devtype)),
2205                                        info->device_name, methods,
2206                                        info->dev_capab, info->group_capab,
2207                                        id, str,
2208                                        info->vendor_elems ?
2209                                        " vendor_elems=1" : "");
2210                 }
2211                 goto done;
2212         }
2213
2214         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
2215                        " p2p_dev_addr=" MACSTR
2216                        " pri_dev_type=%s name='%s' config_methods=0x%x "
2217                        "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d",
2218                        MAC2STR(addr), MAC2STR(info->p2p_device_addr),
2219                        wps_dev_type_bin2str(info->pri_dev_type, devtype,
2220                                             sizeof(devtype)),
2221                        info->device_name, info->config_methods,
2222                        info->dev_capab, info->group_capab,
2223                        wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
2224                        wfd_dev_info_hex ? wfd_dev_info_hex : "",
2225                        info->vendor_elems ? " vendor_elems=1" : "",
2226                        new_device);
2227
2228 done:
2229         os_free(wfd_dev_info_hex);
2230 #endif /* CONFIG_NO_STDOUT_DEBUG */
2231
2232         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
2233 }
2234
2235
2236 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
2237 {
2238         struct wpa_supplicant *wpa_s = ctx;
2239
2240         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
2241                        "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
2242
2243         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
2244 }
2245
2246
2247 static void wpas_find_stopped(void *ctx)
2248 {
2249         struct wpa_supplicant *wpa_s = ctx;
2250         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
2251         wpas_notify_p2p_find_stopped(wpa_s);
2252 }
2253
2254
2255 struct wpas_p2p_listen_work {
2256         unsigned int freq;
2257         unsigned int duration;
2258         struct wpabuf *probe_resp_ie;
2259 };
2260
2261
2262 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
2263 {
2264         if (lwork == NULL)
2265                 return;
2266         wpabuf_free(lwork->probe_resp_ie);
2267         os_free(lwork);
2268 }
2269
2270
2271 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
2272 {
2273         struct wpas_p2p_listen_work *lwork;
2274
2275         if (!wpa_s->p2p_listen_work)
2276                 return;
2277
2278         lwork = wpa_s->p2p_listen_work->ctx;
2279         wpas_p2p_listen_work_free(lwork);
2280         radio_work_done(wpa_s->p2p_listen_work);
2281         wpa_s->p2p_listen_work = NULL;
2282 }
2283
2284
2285 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
2286 {
2287         struct wpa_supplicant *wpa_s = work->wpa_s;
2288         struct wpas_p2p_listen_work *lwork = work->ctx;
2289         unsigned int duration;
2290
2291         if (deinit) {
2292                 if (work->started) {
2293                         wpa_s->p2p_listen_work = NULL;
2294                         wpas_stop_listen(wpa_s);
2295                 }
2296                 wpas_p2p_listen_work_free(lwork);
2297                 return;
2298         }
2299
2300         wpa_s->p2p_listen_work = work;
2301
2302         wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
2303
2304         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
2305                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
2306                            "report received Probe Request frames");
2307                 wpas_p2p_listen_work_done(wpa_s);
2308                 return;
2309         }
2310
2311         wpa_s->pending_listen_freq = lwork->freq;
2312         wpa_s->pending_listen_duration = lwork->duration;
2313
2314         duration = lwork->duration;
2315 #ifdef CONFIG_TESTING_OPTIONS
2316         if (wpa_s->extra_roc_dur) {
2317                 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u",
2318                            duration, duration + wpa_s->extra_roc_dur);
2319                 duration += wpa_s->extra_roc_dur;
2320         }
2321 #endif /* CONFIG_TESTING_OPTIONS */
2322
2323         if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) {
2324                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
2325                            "to remain on channel (%u MHz) for Listen "
2326                            "state", lwork->freq);
2327                 wpas_p2p_listen_work_done(wpa_s);
2328                 wpa_s->pending_listen_freq = 0;
2329                 return;
2330         }
2331         wpa_s->off_channel_freq = 0;
2332         wpa_s->roc_waiting_drv_freq = lwork->freq;
2333 }
2334
2335
2336 static int wpas_start_listen(void *ctx, unsigned int freq,
2337                              unsigned int duration,
2338                              const struct wpabuf *probe_resp_ie)
2339 {
2340         struct wpa_supplicant *wpa_s = ctx;
2341         struct wpas_p2p_listen_work *lwork;
2342
2343         if (wpa_s->p2p_listen_work) {
2344                 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
2345                 return -1;
2346         }
2347
2348         lwork = os_zalloc(sizeof(*lwork));
2349         if (lwork == NULL)
2350                 return -1;
2351         lwork->freq = freq;
2352         lwork->duration = duration;
2353         if (probe_resp_ie) {
2354                 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
2355                 if (lwork->probe_resp_ie == NULL) {
2356                         wpas_p2p_listen_work_free(lwork);
2357                         return -1;
2358                 }
2359         }
2360
2361         if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
2362                            lwork) < 0) {
2363                 wpas_p2p_listen_work_free(lwork);
2364                 return -1;
2365         }
2366
2367         return 0;
2368 }
2369
2370
2371 static void wpas_stop_listen(void *ctx)
2372 {
2373         struct wpa_supplicant *wpa_s = ctx;
2374         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2375                 wpa_drv_cancel_remain_on_channel(wpa_s);
2376                 wpa_s->off_channel_freq = 0;
2377                 wpa_s->roc_waiting_drv_freq = 0;
2378         }
2379         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
2380         wpa_drv_probe_req_report(wpa_s, 0);
2381         wpas_p2p_listen_work_done(wpa_s);
2382 }
2383
2384
2385 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf)
2386 {
2387         struct wpa_supplicant *wpa_s = ctx;
2388         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1);
2389 }
2390
2391
2392 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2393                                          const u8 *peer, const char *params,
2394                                          unsigned int generated_pin)
2395 {
2396         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2397                        " %08d%s", MAC2STR(peer), generated_pin, params);
2398 }
2399
2400
2401 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2402                                         const u8 *peer, const char *params)
2403 {
2404         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2405                        "%s", MAC2STR(peer), params);
2406 }
2407
2408
2409 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2410                                const u8 *dev_addr, const u8 *pri_dev_type,
2411                                const char *dev_name, u16 supp_config_methods,
2412                                u8 dev_capab, u8 group_capab, const u8 *group_id,
2413                                size_t group_id_len)
2414 {
2415         struct wpa_supplicant *wpa_s = ctx;
2416         char devtype[WPS_DEV_TYPE_BUFSIZE];
2417         char params[300];
2418         u8 empty_dev_type[8];
2419         unsigned int generated_pin = 0;
2420         struct wpa_supplicant *group = NULL;
2421         int res;
2422
2423         if (group_id) {
2424                 for (group = wpa_s->global->ifaces; group; group = group->next)
2425                 {
2426                         struct wpa_ssid *s = group->current_ssid;
2427                         if (s != NULL &&
2428                             s->mode == WPAS_MODE_P2P_GO &&
2429                             group_id_len - ETH_ALEN == s->ssid_len &&
2430                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2431                                       s->ssid_len) == 0)
2432                                 break;
2433                 }
2434         }
2435
2436         if (pri_dev_type == NULL) {
2437                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2438                 pri_dev_type = empty_dev_type;
2439         }
2440         res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2441                           " pri_dev_type=%s name='%s' config_methods=0x%x "
2442                           "dev_capab=0x%x group_capab=0x%x%s%s",
2443                           MAC2STR(dev_addr),
2444                           wps_dev_type_bin2str(pri_dev_type, devtype,
2445                                                sizeof(devtype)),
2446                           dev_name, supp_config_methods, dev_capab, group_capab,
2447                           group ? " group=" : "",
2448                           group ? group->ifname : "");
2449         if (os_snprintf_error(sizeof(params), res))
2450                 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated");
2451         params[sizeof(params) - 1] = '\0';
2452
2453         if (config_methods & WPS_CONFIG_DISPLAY) {
2454                 generated_pin = wps_generate_pin();
2455                 wpas_prov_disc_local_display(wpa_s, peer, params,
2456                                              generated_pin);
2457         } else if (config_methods & WPS_CONFIG_KEYPAD)
2458                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2459         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2460                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2461                                MACSTR "%s", MAC2STR(peer), params);
2462
2463         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2464                                             P2P_PROV_DISC_SUCCESS,
2465                                             config_methods, generated_pin);
2466 }
2467
2468
2469 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2470 {
2471         struct wpa_supplicant *wpa_s = ctx;
2472         unsigned int generated_pin = 0;
2473         char params[20];
2474
2475         if (wpa_s->pending_pd_before_join &&
2476             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2477              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2478                 wpa_s->pending_pd_before_join = 0;
2479                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2480                            "join-existing-group operation");
2481                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2482                 return;
2483         }
2484
2485         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2486             wpa_s->pending_pd_use == AUTO_PD_GO_NEG) {
2487                 int res;
2488
2489                 res = os_snprintf(params, sizeof(params), " peer_go=%d",
2490                                   wpa_s->pending_pd_use == AUTO_PD_JOIN);
2491                 if (os_snprintf_error(sizeof(params), res))
2492                         params[sizeof(params) - 1] = '\0';
2493         } else
2494                 params[0] = '\0';
2495
2496         if (config_methods & WPS_CONFIG_DISPLAY)
2497                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2498         else if (config_methods & WPS_CONFIG_KEYPAD) {
2499                 generated_pin = wps_generate_pin();
2500                 wpas_prov_disc_local_display(wpa_s, peer, params,
2501                                              generated_pin);
2502         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2503                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2504                                MACSTR "%s", MAC2STR(peer), params);
2505
2506         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2507                                             P2P_PROV_DISC_SUCCESS,
2508                                             config_methods, generated_pin);
2509 }
2510
2511
2512 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2513                                 enum p2p_prov_disc_status status,
2514                                 u32 adv_id, const u8 *adv_mac,
2515                                 const char *deferred_session_resp)
2516 {
2517         struct wpa_supplicant *wpa_s = ctx;
2518
2519         if (wpa_s->p2p_fallback_to_go_neg) {
2520                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2521                         "failed - fall back to GO Negotiation");
2522                 wpa_msg_global(wpa_s->parent, MSG_INFO,
2523                                P2P_EVENT_FALLBACK_TO_GO_NEG
2524                                "reason=PD-failed");
2525                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2526                 return;
2527         }
2528
2529         if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2530                 wpa_s->pending_pd_before_join = 0;
2531                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2532                            "join-existing-group operation (no ACK for PD "
2533                            "Req attempts)");
2534                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2535                 return;
2536         }
2537
2538         if (adv_id && adv_mac && deferred_session_resp) {
2539                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2540                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x"
2541                                " deferred_session_resp='%s'",
2542                                MAC2STR(peer), status, adv_id,
2543                                deferred_session_resp);
2544         } else if (adv_id && adv_mac) {
2545                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2546                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x",
2547                                MAC2STR(peer), status, adv_id);
2548         } else {
2549                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2550                                " p2p_dev_addr=" MACSTR " status=%d",
2551                                MAC2STR(peer), status);
2552         }
2553
2554         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2555                                             status, 0, 0);
2556 }
2557
2558
2559 static int freq_included(const struct p2p_channels *channels, unsigned int freq)
2560 {
2561         if (channels == NULL)
2562                 return 1; /* Assume no restrictions */
2563         return p2p_channels_includes_freq(channels, freq);
2564
2565 }
2566
2567
2568 /**
2569  * Pick the best frequency to use from all the currently used frequencies.
2570  */
2571 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s,
2572                                         struct wpa_used_freq_data *freqs,
2573                                         unsigned int num)
2574 {
2575         unsigned int i, c;
2576
2577         /* find a candidate freq that is supported by P2P */
2578         for (c = 0; c < num; c++)
2579                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq))
2580                         break;
2581
2582         if (c == num)
2583                 return 0;
2584
2585         /* once we have a candidate, try to find a 'better' one */
2586         for (i = c + 1; i < num; i++) {
2587                 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
2588                         continue;
2589
2590                 /*
2591                  * 1. Infrastructure station interfaces have higher preference.
2592                  * 2. P2P Clients have higher preference.
2593                  * 3. All others.
2594                  */
2595                 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) {
2596                         c = i;
2597                         break;
2598                 }
2599
2600                 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT))
2601                         c = i;
2602         }
2603         return freqs[c].freq;
2604 }
2605
2606
2607 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2608                                   const u8 *go_dev_addr, const u8 *ssid,
2609                                   size_t ssid_len, int *go, u8 *group_bssid,
2610                                   int *force_freq, int persistent_group,
2611                                   const struct p2p_channels *channels,
2612                                   int dev_pw_id)
2613 {
2614         struct wpa_supplicant *wpa_s = ctx;
2615         struct wpa_ssid *s;
2616         struct wpa_used_freq_data *freqs;
2617         struct wpa_supplicant *grp;
2618         int best_freq;
2619
2620         if (!persistent_group) {
2621                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2622                            " to join an active group (SSID: %s)",
2623                            MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2624                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2625                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2626                      == 0 ||
2627                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2628                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2629                                    "authorized invitation");
2630                         goto accept_inv;
2631                 }
2632
2633 #ifdef CONFIG_WPS_NFC
2634                 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled &&
2635                     dev_pw_id == wpa_s->p2p_oob_dev_pw_id) {
2636                         wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
2637                         wpa_s->p2p_wps_method = WPS_NFC;
2638                         wpa_s->pending_join_wps_method = WPS_NFC;
2639                         os_memcpy(wpa_s->pending_join_dev_addr,
2640                                   go_dev_addr, ETH_ALEN);
2641                         os_memcpy(wpa_s->pending_join_iface_addr,
2642                                   bssid, ETH_ALEN);
2643                         goto accept_inv;
2644                 }
2645 #endif /* CONFIG_WPS_NFC */
2646
2647                 /*
2648                  * Do not accept the invitation automatically; notify user and
2649                  * request approval.
2650                  */
2651                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2652         }
2653
2654         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2655         if (grp) {
2656                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2657                            "running persistent group");
2658                 if (*go)
2659                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2660                 goto accept_inv;
2661         }
2662
2663         if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2664             os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2665                 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2666                            "invitation to re-invoke a persistent group");
2667                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
2668         } else if (!wpa_s->conf->persistent_reconnect)
2669                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2670
2671         for (s = wpa_s->conf->ssid; s; s = s->next) {
2672                 if (s->disabled == 2 &&
2673                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2674                     s->ssid_len == ssid_len &&
2675                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2676                         break;
2677         }
2678
2679         if (!s) {
2680                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2681                            " requested reinvocation of an unknown group",
2682                            MAC2STR(sa));
2683                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2684         }
2685
2686         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2687                 *go = 1;
2688                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2689                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2690                                    "interface is already in use - reject "
2691                                    "invitation");
2692                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2693                 }
2694                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2695         } else if (s->mode == WPAS_MODE_P2P_GO) {
2696                 *go = 1;
2697                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2698                 {
2699                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2700                                    "interface address for the group");
2701                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2702                 }
2703                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2704                           ETH_ALEN);
2705         }
2706
2707 accept_inv:
2708         wpas_p2p_set_own_freq_preference(wpa_s, 0);
2709
2710         best_freq = 0;
2711         freqs = os_calloc(wpa_s->num_multichan_concurrent,
2712                           sizeof(struct wpa_used_freq_data));
2713         if (freqs) {
2714                 int num_channels = wpa_s->num_multichan_concurrent;
2715                 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels);
2716                 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
2717                 os_free(freqs);
2718         }
2719
2720         /* Get one of the frequencies currently in use */
2721         if (best_freq > 0) {
2722                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
2723                 wpas_p2p_set_own_freq_preference(wpa_s, best_freq);
2724
2725                 if (wpa_s->num_multichan_concurrent < 2 ||
2726                     wpas_p2p_num_unused_channels(wpa_s) < 1) {
2727                         wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
2728                         *force_freq = best_freq;
2729                 }
2730         }
2731
2732         if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
2733             wpas_p2p_num_unused_channels(wpa_s) > 0) {
2734                 if (*go == 0) {
2735                         /* We are the client */
2736                         wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
2737                                    "running a GO but we are capable of MCC, "
2738                                    "figure out the best channel to use");
2739                         *force_freq = 0;
2740                 } else if (!freq_included(channels, *force_freq)) {
2741                         /* We are the GO, and *force_freq is not in the
2742                          * intersection */
2743                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
2744                                    "in intersection but we are capable of MCC, "
2745                                    "figure out the best channel to use",
2746                                    *force_freq);
2747                         *force_freq = 0;
2748                 }
2749         }
2750
2751         return P2P_SC_SUCCESS;
2752 }
2753
2754
2755 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
2756                                      const u8 *ssid, size_t ssid_len,
2757                                      const u8 *go_dev_addr, u8 status,
2758                                      int op_freq)
2759 {
2760         struct wpa_supplicant *wpa_s = ctx;
2761         struct wpa_ssid *s;
2762
2763         for (s = wpa_s->conf->ssid; s; s = s->next) {
2764                 if (s->disabled == 2 &&
2765                     s->ssid_len == ssid_len &&
2766                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2767                         break;
2768         }
2769
2770         if (status == P2P_SC_SUCCESS) {
2771                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2772                            " was accepted; op_freq=%d MHz, SSID=%s",
2773                            MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
2774                 if (s) {
2775                         int go = s->mode == WPAS_MODE_P2P_GO;
2776                         wpas_p2p_group_add_persistent(
2777                                 wpa_s, s, go, 0, op_freq, 0, 0, NULL,
2778                                 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0);
2779                 } else if (bssid) {
2780                         wpa_s->user_initiated_pd = 0;
2781                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
2782                                       wpa_s->p2p_wps_method, 0, op_freq,
2783                                       ssid, ssid_len);
2784                 }
2785                 return;
2786         }
2787
2788         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
2789                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2790                            " was rejected (status %u)", MAC2STR(sa), status);
2791                 return;
2792         }
2793
2794         if (!s) {
2795                 if (bssid) {
2796                         wpa_msg_global(wpa_s, MSG_INFO,
2797                                        P2P_EVENT_INVITATION_RECEIVED
2798                                        "sa=" MACSTR " go_dev_addr=" MACSTR
2799                                        " bssid=" MACSTR " unknown-network",
2800                                        MAC2STR(sa), MAC2STR(go_dev_addr),
2801                                        MAC2STR(bssid));
2802                 } else {
2803                         wpa_msg_global(wpa_s, MSG_INFO,
2804                                        P2P_EVENT_INVITATION_RECEIVED
2805                                        "sa=" MACSTR " go_dev_addr=" MACSTR
2806                                        " unknown-network",
2807                                        MAC2STR(sa), MAC2STR(go_dev_addr));
2808                 }
2809                 return;
2810         }
2811
2812         if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
2813                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2814                                "sa=" MACSTR " persistent=%d freq=%d",
2815                                MAC2STR(sa), s->id, op_freq);
2816         } else {
2817                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2818                                "sa=" MACSTR " persistent=%d",
2819                                MAC2STR(sa), s->id);
2820         }
2821 }
2822
2823
2824 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
2825                                         struct wpa_ssid *ssid,
2826                                         const u8 *peer, int inv)
2827 {
2828         size_t i;
2829
2830         if (ssid == NULL)
2831                 return;
2832
2833         for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
2834                 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer,
2835                               ETH_ALEN) == 0)
2836                         break;
2837         }
2838         if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) {
2839                 if (ssid->mode != WPAS_MODE_P2P_GO &&
2840                     os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
2841                         wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
2842                                    "due to invitation result", ssid->id);
2843                         wpas_notify_network_removed(wpa_s, ssid);
2844                         wpa_config_remove_network(wpa_s->conf, ssid->id);
2845                         return;
2846                 }
2847                 return; /* Peer not found in client list */
2848         }
2849
2850         wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
2851                    "group %d client list%s",
2852                    MAC2STR(peer), ssid->id,
2853                    inv ? " due to invitation result" : "");
2854         os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN,
2855                    ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
2856                    (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
2857         ssid->num_p2p_clients--;
2858         if (wpa_s->parent->conf->update_config &&
2859             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
2860                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
2861 }
2862
2863
2864 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
2865                                           const u8 *peer)
2866 {
2867         struct wpa_ssid *ssid;
2868
2869         wpa_s = wpa_s->global->p2p_invite_group;
2870         if (wpa_s == NULL)
2871                 return; /* No known invitation group */
2872         ssid = wpa_s->current_ssid;
2873         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
2874             !ssid->p2p_persistent_group)
2875                 return; /* Not operating as a GO in persistent group */
2876         ssid = wpas_p2p_get_persistent(wpa_s->parent, peer,
2877                                        ssid->ssid, ssid->ssid_len);
2878         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
2879 }
2880
2881
2882 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
2883                                    const struct p2p_channels *channels,
2884                                    const u8 *peer, int neg_freq,
2885                                    int peer_oper_freq)
2886 {
2887         struct wpa_supplicant *wpa_s = ctx;
2888         struct wpa_ssid *ssid;
2889         int freq;
2890
2891         if (bssid) {
2892                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2893                                "status=%d " MACSTR,
2894                                status, MAC2STR(bssid));
2895         } else {
2896                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2897                                "status=%d ", status);
2898         }
2899         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
2900
2901         wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
2902                    status, MAC2STR(peer));
2903         if (wpa_s->pending_invite_ssid_id == -1) {
2904                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
2905                         wpas_remove_persistent_client(wpa_s, peer);
2906                 return; /* Invitation to active group */
2907         }
2908
2909         if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
2910                 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
2911                            "invitation exchange to indicate readiness for "
2912                            "re-invocation");
2913         }
2914
2915         if (status != P2P_SC_SUCCESS) {
2916                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
2917                         ssid = wpa_config_get_network(
2918                                 wpa_s->conf, wpa_s->pending_invite_ssid_id);
2919                         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
2920                 }
2921                 wpas_p2p_remove_pending_group_interface(wpa_s);
2922                 return;
2923         }
2924
2925         ssid = wpa_config_get_network(wpa_s->conf,
2926                                       wpa_s->pending_invite_ssid_id);
2927         if (ssid == NULL) {
2928                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
2929                            "data matching with invitation");
2930                 return;
2931         }
2932
2933         /*
2934          * The peer could have missed our ctrl::ack frame for Invitation
2935          * Response and continue retransmitting the frame. To reduce the
2936          * likelihood of the peer not getting successful TX status for the
2937          * Invitation Response frame, wait a short time here before starting
2938          * the persistent group so that we will remain on the current channel to
2939          * acknowledge any possible retransmission from the peer.
2940          */
2941         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
2942                 "starting persistent group");
2943         os_sleep(0, 50000);
2944
2945         if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
2946             freq_included(channels, neg_freq))
2947                 freq = neg_freq;
2948         else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
2949                  freq_included(channels, peer_oper_freq))
2950                 freq = peer_oper_freq;
2951         else
2952                 freq = 0;
2953
2954         wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
2955                    freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
2956         wpas_p2p_group_add_persistent(wpa_s, ssid,
2957                                       ssid->mode == WPAS_MODE_P2P_GO,
2958                                       wpa_s->p2p_persistent_go_freq,
2959                                       freq,
2960                                       wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
2961                                       channels,
2962                                       ssid->mode == WPAS_MODE_P2P_GO ?
2963                                       P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
2964                                       0);
2965 }
2966
2967
2968 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
2969                                     unsigned int freq)
2970 {
2971         if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
2972                 return 1;
2973         return freq_range_list_includes(&global->p2p_disallow_freq, freq);
2974 }
2975
2976
2977 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
2978 {
2979         reg->channel[reg->channels] = chan;
2980         reg->channels++;
2981 }
2982
2983
2984 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
2985                                      struct p2p_channels *chan,
2986                                      struct p2p_channels *cli_chan)
2987 {
2988         int i, cla = 0;
2989
2990         wpa_s->global->p2p_24ghz_social_channels = 1;
2991
2992         os_memset(cli_chan, 0, sizeof(*cli_chan));
2993
2994         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
2995                    "band");
2996
2997         /* Operating class 81 - 2.4 GHz band channels 1..13 */
2998         chan->reg_class[cla].reg_class = 81;
2999         chan->reg_class[cla].channels = 0;
3000         for (i = 0; i < 11; i++) {
3001                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3002                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3003         }
3004         if (chan->reg_class[cla].channels)
3005                 cla++;
3006
3007         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3008                    "band");
3009
3010         /* Operating class 115 - 5 GHz, channels 36-48 */
3011         chan->reg_class[cla].reg_class = 115;
3012         chan->reg_class[cla].channels = 0;
3013         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3014                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3015         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3016                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3017         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3018                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3019         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3020                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3021         if (chan->reg_class[cla].channels)
3022                 cla++;
3023
3024         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3025                    "band");
3026
3027         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3028         chan->reg_class[cla].reg_class = 124;
3029         chan->reg_class[cla].channels = 0;
3030         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3031                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3032         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3033                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3034         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3035                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3036         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3037                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3038         if (chan->reg_class[cla].channels)
3039                 cla++;
3040
3041         chan->reg_classes = cla;
3042         return 0;
3043 }
3044
3045
3046 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
3047                                           u16 num_modes,
3048                                           enum hostapd_hw_mode mode)
3049 {
3050         u16 i;
3051
3052         for (i = 0; i < num_modes; i++) {
3053                 if (modes[i].mode == mode)
3054                         return &modes[i];
3055         }
3056
3057         return NULL;
3058 }
3059
3060
3061 enum chan_allowed {
3062         NOT_ALLOWED, NO_IR, ALLOWED
3063 };
3064
3065 static int has_channel(struct wpa_global *global,
3066                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
3067 {
3068         int i;
3069         unsigned int freq;
3070
3071         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3072                 chan * 5;
3073         if (wpas_p2p_disallowed_freq(global, freq))
3074                 return NOT_ALLOWED;
3075
3076         for (i = 0; i < mode->num_channels; i++) {
3077                 if (mode->channels[i].chan == chan) {
3078                         if (flags)
3079                                 *flags = mode->channels[i].flag;
3080                         if (mode->channels[i].flag &
3081                             (HOSTAPD_CHAN_DISABLED |
3082                              HOSTAPD_CHAN_RADAR))
3083                                 return NOT_ALLOWED;
3084                         if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR)
3085                                 return NO_IR;
3086                         return ALLOWED;
3087                 }
3088         }
3089
3090         return NOT_ALLOWED;
3091 }
3092
3093
3094 struct p2p_oper_class_map {
3095         enum hostapd_hw_mode mode;
3096         u8 op_class;
3097         u8 min_chan;
3098         u8 max_chan;
3099         u8 inc;
3100         enum { BW20, BW40PLUS, BW40MINUS, BW80, BW2160 } bw;
3101 };
3102
3103 static const struct p2p_oper_class_map op_class[] = {
3104         { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
3105 #if 0 /* Do not enable HT40 on 2 GHz for now */
3106         { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
3107         { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
3108 #endif
3109         { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
3110         { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
3111         { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
3112         { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
3113         { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
3114         { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
3115
3116         /*
3117          * IEEE P802.11ac/D7.0 Table E-4 actually talks about channel center
3118          * frequency index 42, 58, 106, 122, 138, 155 with channel spacing of
3119          * 80 MHz, but currently use the following definition for simplicity
3120          * (these center frequencies are not actual channels, which makes
3121          * has_channel() fail). wpas_p2p_verify_80mhz() should take care of
3122          * removing invalid channels.
3123          */
3124         { HOSTAPD_MODE_IEEE80211A, 128, 36, 161, 4, BW80 },
3125         { HOSTAPD_MODE_IEEE80211AD, 180, 1, 4, 1, BW2160 },
3126         { -1, 0, 0, 0, 0, BW20 }
3127 };
3128
3129
3130 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3131                                      struct hostapd_hw_modes *mode,
3132                                      u8 channel)
3133 {
3134         u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3135         unsigned int i;
3136
3137         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3138                 return 0;
3139
3140         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3141                 /*
3142                  * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3143                  * so the center channel is 6 channels away from the start/end.
3144                  */
3145                 if (channel >= center_channels[i] - 6 &&
3146                     channel <= center_channels[i] + 6)
3147                         return center_channels[i];
3148
3149         return 0;
3150 }
3151
3152
3153 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3154                                                struct hostapd_hw_modes *mode,
3155                                                u8 channel, u8 bw)
3156 {
3157         u8 center_chan;
3158         int i, flags;
3159         enum chan_allowed res, ret = ALLOWED;
3160
3161         center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3162         if (!center_chan)
3163                 return NOT_ALLOWED;
3164         if (center_chan >= 58 && center_chan <= 138)
3165                 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3166
3167         /* check all the channels are available */
3168         for (i = 0; i < 4; i++) {
3169                 int adj_chan = center_chan - 6 + i * 4;
3170
3171                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3172                 if (res == NOT_ALLOWED)
3173                         return NOT_ALLOWED;
3174                 if (res == NO_IR)
3175                         ret = NO_IR;
3176
3177                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3178                         return NOT_ALLOWED;
3179                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3180                         return NOT_ALLOWED;
3181                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3182                         return NOT_ALLOWED;
3183                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3184                         return NOT_ALLOWED;
3185         }
3186
3187         return ret;
3188 }
3189
3190
3191 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3192                                                  struct hostapd_hw_modes *mode,
3193                                                  u8 channel, u8 bw)
3194 {
3195         int flag = 0;
3196         enum chan_allowed res, res2;
3197
3198         res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3199         if (bw == BW40MINUS) {
3200                 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3201                         return NOT_ALLOWED;
3202                 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3203         } else if (bw == BW40PLUS) {
3204                 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3205                         return NOT_ALLOWED;
3206                 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3207         } else if (bw == BW80) {
3208                 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3209         }
3210
3211         if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3212                 return NOT_ALLOWED;
3213         if (res == NO_IR || res2 == NO_IR)
3214                 return NO_IR;
3215         return res;
3216 }
3217
3218
3219 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3220                                    struct p2p_channels *chan,
3221                                    struct p2p_channels *cli_chan)
3222 {
3223         struct hostapd_hw_modes *mode;
3224         int cla, op, cli_cla;
3225
3226         if (wpa_s->hw.modes == NULL) {
3227                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3228                            "of all supported channels; assume dualband "
3229                            "support");
3230                 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3231         }
3232
3233         cla = cli_cla = 0;
3234
3235         for (op = 0; op_class[op].op_class; op++) {
3236                 const struct p2p_oper_class_map *o = &op_class[op];
3237                 u8 ch;
3238                 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3239
3240                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3241                 if (mode == NULL)
3242                         continue;
3243                 if (mode->mode == HOSTAPD_MODE_IEEE80211G)
3244                         wpa_s->global->p2p_24ghz_social_channels = 1;
3245                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3246                         enum chan_allowed res;
3247                         res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3248                         if (res == ALLOWED) {
3249                                 if (reg == NULL) {
3250                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3251                                                    o->op_class);
3252                                         reg = &chan->reg_class[cla];
3253                                         cla++;
3254                                         reg->reg_class = o->op_class;
3255                                 }
3256                                 reg->channel[reg->channels] = ch;
3257                                 reg->channels++;
3258                         } else if (res == NO_IR &&
3259                                    wpa_s->conf->p2p_add_cli_chan) {
3260                                 if (cli_reg == NULL) {
3261                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3262                                                    o->op_class);
3263                                         cli_reg = &cli_chan->reg_class[cli_cla];
3264                                         cli_cla++;
3265                                         cli_reg->reg_class = o->op_class;
3266                                 }
3267                                 cli_reg->channel[cli_reg->channels] = ch;
3268                                 cli_reg->channels++;
3269                         }
3270                 }
3271                 if (reg) {
3272                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3273                                     reg->channel, reg->channels);
3274                 }
3275                 if (cli_reg) {
3276                         wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3277                                     cli_reg->channel, cli_reg->channels);
3278                 }
3279         }
3280
3281         chan->reg_classes = cla;
3282         cli_chan->reg_classes = cli_cla;
3283
3284         return 0;
3285 }
3286
3287
3288 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3289                            struct hostapd_hw_modes *mode, u8 channel)
3290 {
3291         int op;
3292         enum chan_allowed ret;
3293
3294         for (op = 0; op_class[op].op_class; op++) {
3295                 const struct p2p_oper_class_map *o = &op_class[op];
3296                 u8 ch;
3297
3298                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3299                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3300                             o->bw == BW20 || ch != channel)
3301                                 continue;
3302                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3303                         if (ret == ALLOWED)
3304                                 return (o->bw == BW40MINUS) ? -1 : 1;
3305                 }
3306         }
3307         return 0;
3308 }
3309
3310
3311 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3312                               struct hostapd_hw_modes *mode, u8 channel)
3313 {
3314         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3315                 return 0;
3316
3317         return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3318 }
3319
3320
3321 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3322                         size_t buf_len)
3323 {
3324         struct wpa_supplicant *wpa_s = ctx;
3325
3326         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3327                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3328                         break;
3329         }
3330         if (wpa_s == NULL)
3331                 return -1;
3332
3333         return wpa_drv_get_noa(wpa_s, buf, buf_len);
3334 }
3335
3336
3337 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s,
3338                                               const u8 *ssid, size_t ssid_len)
3339 {
3340         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3341                 struct wpa_ssid *s = wpa_s->current_ssid;
3342                 if (s == NULL)
3343                         continue;
3344                 if (s->mode != WPAS_MODE_P2P_GO &&
3345                     s->mode != WPAS_MODE_AP &&
3346                     s->mode != WPAS_MODE_P2P_GROUP_FORMATION)
3347                         continue;
3348                 if (s->ssid_len != ssid_len ||
3349                     os_memcmp(ssid, s->ssid, ssid_len) != 0)
3350                         continue;
3351                 return wpa_s;
3352         }
3353
3354         return NULL;
3355
3356 }
3357
3358
3359 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s,
3360                                                   const u8 *peer_dev_addr)
3361 {
3362         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3363                 struct wpa_ssid *ssid = wpa_s->current_ssid;
3364                 if (ssid == NULL)
3365                         continue;
3366                 if (ssid->mode != WPAS_MODE_INFRA)
3367                         continue;
3368                 if (wpa_s->wpa_state != WPA_COMPLETED &&
3369                     wpa_s->wpa_state != WPA_GROUP_HANDSHAKE)
3370                         continue;
3371                 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0)
3372                         return wpa_s;
3373         }
3374
3375         return NULL;
3376 }
3377
3378
3379 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3380 {
3381         struct wpa_supplicant *wpa_s = ctx;
3382
3383         return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL;
3384 }
3385
3386
3387 static int wpas_is_concurrent_session_active(void *ctx)
3388 {
3389         struct wpa_supplicant *wpa_s = ctx;
3390         struct wpa_supplicant *ifs;
3391
3392         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3393                 if (ifs == wpa_s)
3394                         continue;
3395                 if (ifs->wpa_state > WPA_ASSOCIATED)
3396                         return 1;
3397         }
3398         return 0;
3399 }
3400
3401
3402 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3403 {
3404         struct wpa_supplicant *wpa_s = ctx;
3405         wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3406 }
3407
3408
3409 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s,
3410                                   const char *conf_p2p_dev)
3411 {
3412         struct wpa_interface iface;
3413         struct wpa_supplicant *p2pdev_wpa_s;
3414         char ifname[100];
3415         char force_name[100];
3416         int ret;
3417
3418         ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3419                           wpa_s->ifname);
3420         if (os_snprintf_error(sizeof(ifname), ret))
3421                 return -1;
3422         force_name[0] = '\0';
3423         wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3424         ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3425                              force_name, wpa_s->pending_interface_addr, NULL);
3426         if (ret < 0) {
3427                 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3428                 return ret;
3429         }
3430         os_strlcpy(wpa_s->pending_interface_name, ifname,
3431                    sizeof(wpa_s->pending_interface_name));
3432
3433         os_memset(&iface, 0, sizeof(iface));
3434         iface.p2p_mgmt = 1;
3435         iface.ifname = wpa_s->pending_interface_name;
3436         iface.driver = wpa_s->driver->name;
3437         iface.driver_param = wpa_s->conf->driver_param;
3438
3439         /*
3440          * If a P2P Device configuration file was given, use it as the interface
3441          * configuration file (instead of using parent's configuration file.
3442          */
3443         if (conf_p2p_dev) {
3444                 iface.confname = conf_p2p_dev;
3445                 iface.ctrl_interface = NULL;
3446         } else {
3447                 iface.confname = wpa_s->confname;
3448                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3449         }
3450         iface.conf_p2p_dev = NULL;
3451
3452         p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
3453         if (!p2pdev_wpa_s) {
3454                 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3455                 return -1;
3456         }
3457         wpa_s->p2p_dev = p2pdev_wpa_s;
3458
3459         wpa_s->pending_interface_name[0] = '\0';
3460         return 0;
3461 }
3462
3463
3464 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3465                                const u8 *noa, size_t noa_len)
3466 {
3467         struct wpa_supplicant *wpa_s, *intf = ctx;
3468         char hex[100];
3469
3470         for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3471                 if (wpa_s->waiting_presence_resp)
3472                         break;
3473         }
3474         if (!wpa_s) {
3475                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3476                 return;
3477         }
3478         wpa_s->waiting_presence_resp = 0;
3479
3480         wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3481         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3482                 " status=%u noa=%s", MAC2STR(src), status, hex);
3483 }
3484
3485
3486 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid,
3487                                      size_t ssid_len, u8 *go_dev_addr,
3488                                      u8 *ret_ssid, size_t *ret_ssid_len)
3489 {
3490         struct wpa_supplicant *wpa_s = ctx;
3491         struct wpa_ssid *s;
3492
3493         s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len);
3494         if (s) {
3495                 os_memcpy(ret_ssid, s->ssid, s->ssid_len);
3496                 *ret_ssid_len = s->ssid_len;
3497                 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN);
3498                 return 1;
3499         }
3500
3501         return 0;
3502 }
3503
3504
3505 static int wpas_get_go_info(void *ctx, u8 *intended_addr,
3506                             u8 *ssid, size_t *ssid_len, int *group_iface)
3507 {
3508         struct wpa_supplicant *wpa_s = ctx;
3509         struct wpa_ssid *s;
3510         u8 bssid[ETH_ALEN];
3511
3512         s = wpas_p2p_group_go_ssid(wpa_s, bssid);
3513         if (!s) {
3514                 s = wpas_p2p_get_persistent_go(wpa_s);
3515                 if (s)
3516                         os_memcpy(bssid, s->bssid, ETH_ALEN);
3517         }
3518
3519         *group_iface = wpas_p2p_create_iface(wpa_s);
3520         if (!s)
3521                 return 0;
3522
3523         os_memcpy(intended_addr, bssid, ETH_ALEN);
3524         os_memcpy(ssid, s->ssid, s->ssid_len);
3525         *ssid_len = s->ssid_len;
3526
3527         return 1;
3528 }
3529
3530
3531 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go,
3532                                     const u8 *ssid, size_t ssid_len)
3533 {
3534         struct wpa_supplicant *wpa_s = ctx;
3535         struct wpa_ssid *s;
3536         int save_config = 0;
3537         size_t i;
3538
3539         /* Start with our first choice of Persistent Groups */
3540         while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) {
3541                 if (go && ssid && ssid_len &&
3542                     s->ssid_len == ssid_len &&
3543                     os_memcmp(go, s->bssid, ETH_ALEN) == 0 &&
3544                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3545                         break;
3546
3547                 /* Remove stale persistent group */
3548                 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) {
3549                         wpa_config_remove_network(wpa_s->conf, s->id);
3550                         save_config = 1;
3551                         continue;
3552                 }
3553
3554                 for (i = 0; i < s->num_p2p_clients; i++) {
3555                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
3556                                       peer, ETH_ALEN) != 0)
3557                                 continue;
3558
3559                         os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
3560                                    s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3561                                    (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3562                         break;
3563                 }
3564                 s->num_p2p_clients--;
3565                 save_config = 1;
3566         }
3567
3568         if (save_config)
3569                 p2p_config_write(wpa_s);
3570
3571         /* Return TRUE if valid SSID remains */
3572         return s != NULL;
3573 }
3574
3575
3576 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev,
3577                                     const u8 *adv_mac, const u8 *ses_mac,
3578                                     const u8 *grp_mac, u32 adv_id, u32 ses_id,
3579                                     u8 conncap, int passwd_id,
3580                                     const u8 *persist_ssid,
3581                                     size_t persist_ssid_size, int response_done,
3582                                     int prov_start, const char *session_info)
3583 {
3584         struct wpa_supplicant *wpa_s = ctx;
3585         u8 mac[ETH_ALEN];
3586         struct wpa_ssid *persistent_go, *stale, *s;
3587         int save_config = 0;
3588         struct wpa_supplicant *go_wpa_s;
3589
3590         if (!dev)
3591                 return;
3592
3593         os_memset(mac, 0, ETH_ALEN);
3594         if (!adv_mac)
3595                 adv_mac = mac;
3596         if (!ses_mac)
3597                 ses_mac = mac;
3598         if (!grp_mac)
3599                 grp_mac = mac;
3600
3601         if (prov_start) {
3602                 if (session_info == NULL) {
3603                         wpa_msg_global(wpa_s, MSG_INFO,
3604                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3605                                        " adv_id=%x conncap=%x"
3606                                        " adv_mac=" MACSTR
3607                                        " session=%x mac=" MACSTR
3608                                        " dev_passwd_id=%d",
3609                                        MAC2STR(dev), adv_id, conncap,
3610                                        MAC2STR(adv_mac),
3611                                        ses_id, MAC2STR(ses_mac),
3612                                        passwd_id);
3613                 } else {
3614                         wpa_msg_global(wpa_s, MSG_INFO,
3615                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3616                                        " adv_id=%x conncap=%x"
3617                                        " adv_mac=" MACSTR
3618                                        " session=%x mac=" MACSTR
3619                                        " dev_passwd_id=%d info='%s'",
3620                                        MAC2STR(dev), adv_id, conncap,
3621                                        MAC2STR(adv_mac),
3622                                        ses_id, MAC2STR(ses_mac),
3623                                        passwd_id, session_info);
3624                 }
3625                 return;
3626         }
3627
3628         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
3629         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
3630
3631         if (status && status != P2P_SC_SUCCESS_DEFERRED) {
3632                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
3633                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
3634
3635                 if (persistent_go && !persistent_go->num_p2p_clients) {
3636                         /* remove empty persistent GO */
3637                         wpa_config_remove_network(wpa_s->conf,
3638                                                   persistent_go->id);
3639                 }
3640
3641                 wpa_msg_global(wpa_s, MSG_INFO,
3642                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3643                                " status=%d"
3644                                " adv_id=%x adv_mac=" MACSTR
3645                                " session=%x mac=" MACSTR,
3646                                MAC2STR(dev), status,
3647                                adv_id, MAC2STR(adv_mac),
3648                                ses_id, MAC2STR(ses_mac));
3649                 return;
3650         }
3651
3652         /* Clean up stale persistent groups with this device */
3653         s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid,
3654                                     persist_ssid_size);
3655         for (;;) {
3656                 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0);
3657                 if (!stale)
3658                         break;
3659
3660                 if (s && s->ssid_len == stale->ssid_len &&
3661                     os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 &&
3662                     os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0)
3663                         break;
3664
3665                 /* Remove stale persistent group */
3666                 if (stale->mode != WPAS_MODE_P2P_GO ||
3667                     stale->num_p2p_clients <= 1) {
3668                         wpa_config_remove_network(wpa_s->conf, stale->id);
3669                 } else {
3670                         size_t i;
3671
3672                         for (i = 0; i < stale->num_p2p_clients; i++) {
3673                                 if (os_memcmp(stale->p2p_client_list +
3674                                               i * ETH_ALEN,
3675                                               dev, ETH_ALEN) == 0) {
3676                                         os_memmove(stale->p2p_client_list +
3677                                                    i * ETH_ALEN,
3678                                                    stale->p2p_client_list +
3679                                                    (i + 1) * ETH_ALEN,
3680                                                    (stale->num_p2p_clients -
3681                                                     i - 1) * ETH_ALEN);
3682                                         break;
3683                                 }
3684                         }
3685                         stale->num_p2p_clients--;
3686                 }
3687                 save_config = 1;
3688         }
3689
3690         if (save_config)
3691                 p2p_config_write(wpa_s);
3692
3693         if (s) {
3694                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
3695                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
3696
3697                 if (persistent_go && s != persistent_go &&
3698                     !persistent_go->num_p2p_clients) {
3699                         /* remove empty persistent GO */
3700                         wpa_config_remove_network(wpa_s->conf,
3701                                                   persistent_go->id);
3702                         /* Save config */
3703                 }
3704
3705                 wpa_msg_global(wpa_s, MSG_INFO,
3706                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3707                                " status=%d"
3708                                " adv_id=%x adv_mac=" MACSTR
3709                                " session=%x mac=" MACSTR
3710                                " persist=%d",
3711                                MAC2STR(dev), status,
3712                                adv_id, MAC2STR(adv_mac),
3713                                ses_id, MAC2STR(ses_mac), s->id);
3714                 return;
3715         }
3716
3717         if (conncap == P2PS_SETUP_GROUP_OWNER) {
3718                 const char *go_ifname = NULL;
3719                 if (!go_wpa_s) {
3720                         wpa_s->global->pending_p2ps_group = 1;
3721
3722                         if (wpa_s->conf->p2p_no_group_iface)
3723                                 go_ifname = wpa_s->ifname;
3724                         else if (wpa_s->pending_interface_name[0])
3725                                 go_ifname = wpa_s->pending_interface_name;
3726
3727                         if (!go_ifname) {
3728                                 wpas_p2ps_prov_complete(
3729                                         wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP,
3730                                         dev, adv_mac, ses_mac,
3731                                         NULL, adv_id, ses_id, 0, 0,
3732                                         NULL, 0, 0, 0, NULL);
3733                                 return;
3734                         }
3735
3736                         /* If PD Resp complete, start up the GO */
3737                         if (response_done && persistent_go) {
3738                                 wpas_p2p_group_add_persistent(
3739                                         wpa_s, persistent_go,
3740                                         0, 0, 0, 0, 0, NULL,
3741                                         persistent_go->mode ==
3742                                         WPAS_MODE_P2P_GO ?
3743                                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3744                                         0);
3745                         } else if (response_done) {
3746                                 wpas_p2p_group_add(wpa_s, 1, 0, 0, 0);
3747                         }
3748
3749                         if (passwd_id == DEV_PW_P2PS_DEFAULT) {
3750                                 os_memcpy(wpa_s->p2ps_join_addr, dev, ETH_ALEN);
3751                                 wpa_s->p2ps_join_addr_valid = 1;
3752                                 wpa_dbg(wpa_s, MSG_DEBUG,
3753                                         "P2PS: Saving PIN for " MACSTR,
3754                                         MAC2STR(dev));
3755                         }
3756                 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) {
3757                         go_ifname = go_wpa_s->ifname;
3758
3759                         wpa_dbg(go_wpa_s, MSG_DEBUG,
3760                                 "P2P: Setting PIN-1 For " MACSTR, MAC2STR(dev));
3761                         wpa_supplicant_ap_wps_pin(go_wpa_s, dev, "12345670",
3762                                                   NULL, 0, 0);
3763
3764                         os_memcpy(wpa_s->p2ps_join_addr, dev, ETH_ALEN);
3765                         wpa_s->p2ps_join_addr_valid = 1;
3766                         wpa_dbg(wpa_s, MSG_DEBUG,
3767                                 "P2PS: Saving PIN for " MACSTR, MAC2STR(dev));
3768                 }
3769
3770                 wpa_msg_global(wpa_s, MSG_INFO,
3771                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3772                                " status=%d conncap=%x"
3773                                " adv_id=%x adv_mac=" MACSTR
3774                                " session=%x mac=" MACSTR
3775                                " dev_passwd_id=%d go=%s",
3776                                MAC2STR(dev), status, conncap,
3777                                adv_id, MAC2STR(adv_mac),
3778                                ses_id, MAC2STR(ses_mac),
3779                                passwd_id, go_ifname);
3780                 return;
3781         }
3782
3783         if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
3784                 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
3785
3786         if (persistent_go && !persistent_go->num_p2p_clients) {
3787                 /* remove empty persistent GO */
3788                 wpa_config_remove_network(wpa_s->conf, persistent_go->id);
3789         }
3790
3791         if (conncap == P2PS_SETUP_CLIENT) {
3792                 wpa_msg_global(wpa_s, MSG_INFO,
3793                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3794                                " status=%d conncap=%x"
3795                                " adv_id=%x adv_mac=" MACSTR
3796                                " session=%x mac=" MACSTR
3797                                " dev_passwd_id=%d join=" MACSTR,
3798                                MAC2STR(dev), status, conncap,
3799                                adv_id, MAC2STR(adv_mac),
3800                                ses_id, MAC2STR(ses_mac),
3801                                passwd_id, MAC2STR(grp_mac));
3802         } else {
3803                 wpa_msg_global(wpa_s, MSG_INFO,
3804                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3805                                " status=%d conncap=%x"
3806                                " adv_id=%x adv_mac=" MACSTR
3807                                " session=%x mac=" MACSTR
3808                                " dev_passwd_id=%d",
3809                                MAC2STR(dev), status, conncap,
3810                                adv_id, MAC2STR(adv_mac),
3811                                ses_id, MAC2STR(ses_mac),
3812                                passwd_id);
3813         }
3814 }
3815
3816
3817 static int _wpas_p2p_in_progress(void *ctx)
3818 {
3819         struct wpa_supplicant *wpa_s = ctx;
3820         return wpas_p2p_in_progress(wpa_s);
3821 }
3822
3823
3824 static int wpas_prov_disc_resp_cb(void *ctx)
3825 {
3826         struct wpa_supplicant *wpa_s = ctx;
3827         struct wpa_ssid *persistent_go;
3828
3829         if (!wpa_s->global->pending_p2ps_group)
3830                 return 0;
3831
3832         wpa_s->global->pending_p2ps_group = 0;
3833
3834         if (wpas_p2p_get_go_group(wpa_s))
3835                 return 0;
3836         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
3837
3838         if (persistent_go) {
3839                 wpas_p2p_group_add_persistent(
3840                         wpa_s, persistent_go, 0, 0, 0, 0, 0, NULL,
3841                         persistent_go->mode == WPAS_MODE_P2P_GO ?
3842                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0);
3843         } else {
3844                 wpas_p2p_group_add(wpa_s, 1, 0, 0, 0);
3845         }
3846
3847         return 1;
3848 }
3849
3850
3851 /**
3852  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
3853  * @global: Pointer to global data from wpa_supplicant_init()
3854  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3855  * Returns: 0 on success, -1 on failure
3856  */
3857 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
3858 {
3859         struct p2p_config p2p;
3860         int i;
3861
3862         if (wpa_s->conf->p2p_disabled)
3863                 return 0;
3864
3865         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
3866                 return 0;
3867
3868         if (global->p2p)
3869                 return 0;
3870
3871         os_memset(&p2p, 0, sizeof(p2p));
3872         p2p.cb_ctx = wpa_s;
3873         p2p.debug_print = wpas_p2p_debug_print;
3874         p2p.p2p_scan = wpas_p2p_scan;
3875         p2p.send_action = wpas_send_action;
3876         p2p.send_action_done = wpas_send_action_done;
3877         p2p.go_neg_completed = wpas_go_neg_completed;
3878         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
3879         p2p.dev_found = wpas_dev_found;
3880         p2p.dev_lost = wpas_dev_lost;
3881         p2p.find_stopped = wpas_find_stopped;
3882         p2p.start_listen = wpas_start_listen;
3883         p2p.stop_listen = wpas_stop_listen;
3884         p2p.send_probe_resp = wpas_send_probe_resp;
3885         p2p.sd_request = wpas_sd_request;
3886         p2p.sd_response = wpas_sd_response;
3887         p2p.prov_disc_req = wpas_prov_disc_req;
3888         p2p.prov_disc_resp = wpas_prov_disc_resp;
3889         p2p.prov_disc_fail = wpas_prov_disc_fail;
3890         p2p.invitation_process = wpas_invitation_process;
3891         p2p.invitation_received = wpas_invitation_received;
3892         p2p.invitation_result = wpas_invitation_result;
3893         p2p.get_noa = wpas_get_noa;
3894         p2p.go_connected = wpas_go_connected;
3895         p2p.presence_resp = wpas_presence_resp;
3896         p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
3897         p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
3898         p2p.get_persistent_group = wpas_get_persistent_group;
3899         p2p.get_go_info = wpas_get_go_info;
3900         p2p.remove_stale_groups = wpas_remove_stale_groups;
3901         p2p.p2ps_prov_complete = wpas_p2ps_prov_complete;
3902         p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb;
3903         p2p.p2ps_group_capability = p2ps_group_capability;
3904
3905         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
3906         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
3907         p2p.dev_name = wpa_s->conf->device_name;
3908         p2p.manufacturer = wpa_s->conf->manufacturer;
3909         p2p.model_name = wpa_s->conf->model_name;
3910         p2p.model_number = wpa_s->conf->model_number;
3911         p2p.serial_number = wpa_s->conf->serial_number;
3912         if (wpa_s->wps) {
3913                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
3914                 p2p.config_methods = wpa_s->wps->config_methods;
3915         }
3916
3917         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
3918                 wpa_printf(MSG_ERROR,
3919                            "P2P: Failed to configure supported channel list");
3920                 return -1;
3921         }
3922
3923         if (wpa_s->conf->p2p_listen_reg_class &&
3924             wpa_s->conf->p2p_listen_channel) {
3925                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
3926                 p2p.channel = wpa_s->conf->p2p_listen_channel;
3927                 p2p.channel_forced = 1;
3928         } else {
3929                 /*
3930                  * Pick one of the social channels randomly as the listen
3931                  * channel.
3932                  */
3933                 if (p2p_config_get_random_social(&p2p, &p2p.reg_class,
3934                                                  &p2p.channel) != 0) {
3935                         wpa_printf(MSG_INFO,
3936                                    "P2P: No social channels supported by the driver - do not enable P2P");
3937                         return 0;
3938                 }
3939                 p2p.channel_forced = 0;
3940         }
3941         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d",
3942                    p2p.reg_class, p2p.channel);
3943
3944         if (wpa_s->conf->p2p_oper_reg_class &&
3945             wpa_s->conf->p2p_oper_channel) {
3946                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
3947                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
3948                 p2p.cfg_op_channel = 1;
3949                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
3950                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
3951
3952         } else {
3953                 /*
3954                  * Use random operation channel from 2.4 GHz band social
3955                  * channels (1, 6, 11) or band 60 GHz social channel (2) if no
3956                  * other preference is indicated.
3957                  */
3958                 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class,
3959                                                  &p2p.op_channel) != 0) {
3960                         wpa_printf(MSG_ERROR,
3961                                    "P2P: Failed to select random social channel as operation channel");
3962                         return -1;
3963                 }
3964                 p2p.cfg_op_channel = 0;
3965                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
3966                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
3967         }
3968
3969         if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
3970                 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
3971                 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
3972         }
3973
3974         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
3975                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
3976                 p2p.country[2] = 0x04;
3977         } else
3978                 os_memcpy(p2p.country, "XX\x04", 3);
3979
3980         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
3981                   WPS_DEV_TYPE_LEN);
3982
3983         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
3984         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
3985                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
3986
3987         p2p.concurrent_operations = !!(wpa_s->drv_flags &
3988                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
3989
3990         p2p.max_peers = 100;
3991
3992         if (wpa_s->conf->p2p_ssid_postfix) {
3993                 p2p.ssid_postfix_len =
3994                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
3995                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
3996                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
3997                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
3998                           p2p.ssid_postfix_len);
3999         }
4000
4001         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
4002
4003         p2p.max_listen = wpa_s->max_remain_on_chan;
4004
4005         if (wpa_s->conf->p2p_passphrase_len >= 8 &&
4006             wpa_s->conf->p2p_passphrase_len <= 63)
4007                 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len;
4008         else
4009                 p2p.passphrase_len = 8;
4010
4011         global->p2p = p2p_init(&p2p);
4012         if (global->p2p == NULL)
4013                 return -1;
4014         global->p2p_init_wpa_s = wpa_s;
4015
4016         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4017                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4018                         continue;
4019                 p2p_add_wps_vendor_extension(
4020                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
4021         }
4022
4023         p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
4024
4025         return 0;
4026 }
4027
4028
4029 /**
4030  * wpas_p2p_deinit - Deinitialize per-interface P2P data
4031  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4032  *
4033  * This function deinitialize per-interface P2P data.
4034  */
4035 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
4036 {
4037         if (wpa_s->driver && wpa_s->drv_priv)
4038                 wpa_drv_probe_req_report(wpa_s, 0);
4039
4040         if (wpa_s->go_params) {
4041                 /* Clear any stored provisioning info */
4042                 p2p_clear_provisioning_info(
4043                         wpa_s->global->p2p,
4044                         wpa_s->go_params->peer_device_addr);
4045         }
4046
4047         os_free(wpa_s->go_params);
4048         wpa_s->go_params = NULL;
4049         eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
4050         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4051         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4052         wpa_s->p2p_long_listen = 0;
4053         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4054         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4055         wpas_p2p_remove_pending_group_interface(wpa_s);
4056         eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
4057         wpas_p2p_listen_work_done(wpa_s);
4058         if (wpa_s->p2p_send_action_work) {
4059                 os_free(wpa_s->p2p_send_action_work->ctx);
4060                 radio_work_done(wpa_s->p2p_send_action_work);
4061                 wpa_s->p2p_send_action_work = NULL;
4062         }
4063         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
4064
4065         wpabuf_free(wpa_s->p2p_oob_dev_pw);
4066         wpa_s->p2p_oob_dev_pw = NULL;
4067
4068         os_free(wpa_s->p2p_group_common_freqs);
4069         wpa_s->p2p_group_common_freqs = NULL;
4070         wpa_s->p2p_group_common_freqs_num = 0;
4071
4072         /* TODO: remove group interface from the driver if this wpa_s instance
4073          * is on top of a P2P group interface */
4074 }
4075
4076
4077 /**
4078  * wpas_p2p_deinit_global - Deinitialize global P2P module
4079  * @global: Pointer to global data from wpa_supplicant_init()
4080  *
4081  * This function deinitializes the global (per device) P2P module.
4082  */
4083 static void wpas_p2p_deinit_global(struct wpa_global *global)
4084 {
4085         struct wpa_supplicant *wpa_s, *tmp;
4086
4087         wpa_s = global->ifaces;
4088
4089         wpas_p2p_service_flush(global->p2p_init_wpa_s);
4090
4091         /* Remove remaining P2P group interfaces */
4092         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
4093                 wpa_s = wpa_s->next;
4094         while (wpa_s) {
4095                 tmp = global->ifaces;
4096                 while (tmp &&
4097                        (tmp == wpa_s ||
4098                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
4099                         tmp = tmp->next;
4100                 }
4101                 if (tmp == NULL)
4102                         break;
4103                 /* Disconnect from the P2P group and deinit the interface */
4104                 wpas_p2p_disconnect(tmp);
4105         }
4106
4107         /*
4108          * Deinit GO data on any possibly remaining interface (if main
4109          * interface is used as GO).
4110          */
4111         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4112                 if (wpa_s->ap_iface)
4113                         wpas_p2p_group_deinit(wpa_s);
4114         }
4115
4116         p2p_deinit(global->p2p);
4117         global->p2p = NULL;
4118         global->p2p_init_wpa_s = NULL;
4119 }
4120
4121
4122 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4123 {
4124         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
4125             wpa_s->conf->p2p_no_group_iface)
4126                 return 0; /* separate interface disabled per configuration */
4127         if (wpa_s->drv_flags &
4128             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4129              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4130                 return 1; /* P2P group requires a new interface in every case
4131                            */
4132         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4133                 return 0; /* driver does not support concurrent operations */
4134         if (wpa_s->global->ifaces->next)
4135                 return 1; /* more that one interface already in use */
4136         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4137                 return 1; /* this interface is already in use */
4138         return 0;
4139 }
4140
4141
4142 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4143                                  const u8 *peer_addr,
4144                                  enum p2p_wps_method wps_method,
4145                                  int go_intent, const u8 *own_interface_addr,
4146                                  unsigned int force_freq, int persistent_group,
4147                                  struct wpa_ssid *ssid, unsigned int pref_freq)
4148 {
4149         if (persistent_group && wpa_s->conf->persistent_reconnect)
4150                 persistent_group = 2;
4151
4152         /*
4153          * Increase GO config timeout if HT40 is used since it takes some time
4154          * to scan channels for coex purposes before the BSS can be started.
4155          */
4156         p2p_set_config_timeout(wpa_s->global->p2p,
4157                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4158
4159         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4160                            go_intent, own_interface_addr, force_freq,
4161                            persistent_group, ssid ? ssid->ssid : NULL,
4162                            ssid ? ssid->ssid_len : 0,
4163                            wpa_s->p2p_pd_before_go_neg, pref_freq,
4164                            wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4165                            0);
4166 }
4167
4168
4169 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4170                                 const u8 *peer_addr,
4171                                 enum p2p_wps_method wps_method,
4172                                 int go_intent, const u8 *own_interface_addr,
4173                                 unsigned int force_freq, int persistent_group,
4174                                 struct wpa_ssid *ssid, unsigned int pref_freq)
4175 {
4176         if (persistent_group && wpa_s->conf->persistent_reconnect)
4177                 persistent_group = 2;
4178
4179         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4180                              go_intent, own_interface_addr, force_freq,
4181                              persistent_group, ssid ? ssid->ssid : NULL,
4182                              ssid ? ssid->ssid_len : 0, pref_freq,
4183                              wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4184                              0);
4185 }
4186
4187
4188 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4189 {
4190         wpa_s->p2p_join_scan_count++;
4191         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4192                    wpa_s->p2p_join_scan_count);
4193         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4194                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4195                            " for join operationg - stop join attempt",
4196                            MAC2STR(wpa_s->pending_join_iface_addr));
4197                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4198                 if (wpa_s->p2p_auto_pd) {
4199                         wpa_s->p2p_auto_pd = 0;
4200                         wpa_msg_global(wpa_s, MSG_INFO,
4201                                        P2P_EVENT_PROV_DISC_FAILURE
4202                                        " p2p_dev_addr=" MACSTR " status=N/A",
4203                                        MAC2STR(wpa_s->pending_join_dev_addr));
4204                         return;
4205                 }
4206                 wpa_msg_global(wpa_s->parent, MSG_INFO,
4207                                P2P_EVENT_GROUP_FORMATION_FAILURE);
4208         }
4209 }
4210
4211
4212 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4213 {
4214         int res;
4215         unsigned int num, i;
4216         struct wpa_used_freq_data *freqs;
4217
4218         if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4219                 /* Multiple channels are supported and not all are in use */
4220                 return 0;
4221         }
4222
4223         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4224                           sizeof(struct wpa_used_freq_data));
4225         if (!freqs)
4226                 return 1;
4227
4228         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4229                                         wpa_s->num_multichan_concurrent);
4230
4231         for (i = 0; i < num; i++) {
4232                 if (freqs[i].freq == freq) {
4233                         wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4234                                    freq);
4235                         res = 0;
4236                         goto exit_free;
4237                 }
4238         }
4239
4240         wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
4241         res = 1;
4242
4243 exit_free:
4244         os_free(freqs);
4245         return res;
4246 }
4247
4248
4249 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4250                             const u8 *peer_dev_addr)
4251 {
4252         struct wpa_bss *bss;
4253         int updated;
4254
4255         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4256         if (bss == NULL)
4257                 return -1;
4258         if (bss->last_update_idx < wpa_s->bss_update_idx) {
4259                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4260                            "last scan");
4261                 return 0;
4262         }
4263
4264         updated = os_reltime_before(&wpa_s->p2p_auto_started,
4265                                     &bss->last_update);
4266         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4267                    "%ld.%06ld (%supdated in last scan)",
4268                    bss->last_update.sec, bss->last_update.usec,
4269                    updated ? "": "not ");
4270
4271         return updated;
4272 }
4273
4274
4275 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4276                                    struct wpa_scan_results *scan_res)
4277 {
4278         struct wpa_bss *bss = NULL;
4279         int freq;
4280         u8 iface_addr[ETH_ALEN];
4281
4282         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4283
4284         if (wpa_s->global->p2p_disabled)
4285                 return;
4286
4287         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4288                    scan_res ? (int) scan_res->num : -1,
4289                    wpa_s->p2p_auto_join ? "auto_" : "");
4290
4291         if (scan_res)
4292                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4293
4294         if (wpa_s->p2p_auto_pd) {
4295                 int join = wpas_p2p_peer_go(wpa_s,
4296                                             wpa_s->pending_join_dev_addr);
4297                 if (join == 0 &&
4298                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4299                         wpa_s->auto_pd_scan_retry++;
4300                         bss = wpa_bss_get_bssid_latest(
4301                                 wpa_s, wpa_s->pending_join_dev_addr);
4302                         if (bss) {
4303                                 freq = bss->freq;
4304                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4305                                            "the peer " MACSTR " at %d MHz",
4306                                            wpa_s->auto_pd_scan_retry,
4307                                            MAC2STR(wpa_s->
4308                                                    pending_join_dev_addr),
4309                                            freq);
4310                                 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4311                                 return;
4312                         }
4313                 }
4314
4315                 if (join < 0)
4316                         join = 0;
4317
4318                 wpa_s->p2p_auto_pd = 0;
4319                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4320                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4321                            MAC2STR(wpa_s->pending_join_dev_addr), join);
4322                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4323                                       wpa_s->pending_join_dev_addr, NULL,
4324                                       wpa_s->pending_pd_config_methods, join,
4325                                       0, wpa_s->user_initiated_pd) < 0) {
4326                         wpa_s->p2p_auto_pd = 0;
4327                         wpa_msg_global(wpa_s, MSG_INFO,
4328                                        P2P_EVENT_PROV_DISC_FAILURE
4329                                        " p2p_dev_addr=" MACSTR " status=N/A",
4330                                        MAC2STR(wpa_s->pending_join_dev_addr));
4331                 }
4332                 return;
4333         }
4334
4335         if (wpa_s->p2p_auto_join) {
4336                 int join = wpas_p2p_peer_go(wpa_s,
4337                                             wpa_s->pending_join_dev_addr);
4338                 if (join < 0) {
4339                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4340                                    "running a GO -> use GO Negotiation");
4341                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4342                                        P2P_EVENT_FALLBACK_TO_GO_NEG
4343                                        "reason=peer-not-running-GO");
4344                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4345                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4346                                          wpa_s->p2p_persistent_group, 0, 0, 0,
4347                                          wpa_s->p2p_go_intent,
4348                                          wpa_s->p2p_connect_freq,
4349                                          wpa_s->p2p_persistent_id,
4350                                          wpa_s->p2p_pd_before_go_neg,
4351                                          wpa_s->p2p_go_ht40,
4352                                          wpa_s->p2p_go_vht);
4353                         return;
4354                 }
4355
4356                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4357                            "try to join the group", join ? "" :
4358                            " in older scan");
4359                 if (!join) {
4360                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4361                                        P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED);
4362                         wpa_s->p2p_fallback_to_go_neg = 1;
4363                 }
4364         }
4365
4366         freq = p2p_get_oper_freq(wpa_s->global->p2p,
4367                                  wpa_s->pending_join_iface_addr);
4368         if (freq < 0 &&
4369             p2p_get_interface_addr(wpa_s->global->p2p,
4370                                    wpa_s->pending_join_dev_addr,
4371                                    iface_addr) == 0 &&
4372             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0
4373             && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) {
4374                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4375                            "address for join from " MACSTR " to " MACSTR
4376                            " based on newly discovered P2P peer entry",
4377                            MAC2STR(wpa_s->pending_join_iface_addr),
4378                            MAC2STR(iface_addr));
4379                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4380                           ETH_ALEN);
4381
4382                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4383                                          wpa_s->pending_join_iface_addr);
4384         }
4385         if (freq >= 0) {
4386                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4387                            "from P2P peer table: %d MHz", freq);
4388         }
4389         if (wpa_s->p2p_join_ssid_len) {
4390                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4391                            MACSTR " and SSID %s",
4392                            MAC2STR(wpa_s->pending_join_iface_addr),
4393                            wpa_ssid_txt(wpa_s->p2p_join_ssid,
4394                                         wpa_s->p2p_join_ssid_len));
4395                 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4396                                   wpa_s->p2p_join_ssid,
4397                                   wpa_s->p2p_join_ssid_len);
4398         }
4399         if (!bss) {
4400                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4401                            MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4402                 bss = wpa_bss_get_bssid_latest(wpa_s,
4403                                                wpa_s->pending_join_iface_addr);
4404         }
4405         if (bss) {
4406                 freq = bss->freq;
4407                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4408                            "from BSS table: %d MHz (SSID %s)", freq,
4409                            wpa_ssid_txt(bss->ssid, bss->ssid_len));
4410         }
4411         if (freq > 0) {
4412                 u16 method;
4413
4414                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4415                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4416                                        P2P_EVENT_GROUP_FORMATION_FAILURE
4417                                        "reason=FREQ_CONFLICT");
4418                         return;
4419                 }
4420
4421                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4422                            "prior to joining an existing group (GO " MACSTR
4423                            " freq=%u MHz)",
4424                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
4425                 wpa_s->pending_pd_before_join = 1;
4426
4427                 switch (wpa_s->pending_join_wps_method) {
4428                 case WPS_PIN_DISPLAY:
4429                         method = WPS_CONFIG_KEYPAD;
4430                         break;
4431                 case WPS_PIN_KEYPAD:
4432                         method = WPS_CONFIG_DISPLAY;
4433                         break;
4434                 case WPS_PBC:
4435                         method = WPS_CONFIG_PUSHBUTTON;
4436                         break;
4437                 default:
4438                         method = 0;
4439                         break;
4440                 }
4441
4442                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4443                                                wpa_s->pending_join_dev_addr) ==
4444                      method)) {
4445                         /*
4446                          * We have already performed provision discovery for
4447                          * joining the group. Proceed directly to join
4448                          * operation without duplicated provision discovery. */
4449                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4450                                    "with " MACSTR " already done - proceed to "
4451                                    "join",
4452                                    MAC2STR(wpa_s->pending_join_dev_addr));
4453                         wpa_s->pending_pd_before_join = 0;
4454                         goto start;
4455                 }
4456
4457                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4458                                       wpa_s->pending_join_dev_addr,
4459                                       NULL, method, 1,
4460                                       freq, wpa_s->user_initiated_pd) < 0) {
4461                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4462                                    "Discovery Request before joining an "
4463                                    "existing group");
4464                         wpa_s->pending_pd_before_join = 0;
4465                         goto start;
4466                 }
4467                 return;
4468         }
4469
4470         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4471         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4472         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4473         wpas_p2p_check_join_scan_limit(wpa_s);
4474         return;
4475
4476 start:
4477         /* Start join operation immediately */
4478         wpas_p2p_join_start(wpa_s, 0, NULL, 0);
4479 }
4480
4481
4482 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4483                                    const u8 *ssid, size_t ssid_len)
4484 {
4485         int ret;
4486         struct wpa_driver_scan_params params;
4487         struct wpabuf *wps_ie, *ies;
4488         size_t ielen;
4489         int freqs[2] = { 0, 0 };
4490
4491         os_memset(&params, 0, sizeof(params));
4492
4493         /* P2P Wildcard SSID */
4494         params.num_ssids = 1;
4495         if (ssid && ssid_len) {
4496                 params.ssids[0].ssid = ssid;
4497                 params.ssids[0].ssid_len = ssid_len;
4498                 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4499                 wpa_s->p2p_join_ssid_len = ssid_len;
4500         } else {
4501                 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4502                 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4503                 wpa_s->p2p_join_ssid_len = 0;
4504         }
4505
4506         wpa_s->wps->dev.p2p = 1;
4507         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4508                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4509                                         NULL);
4510         if (wps_ie == NULL) {
4511                 wpas_p2p_scan_res_join(wpa_s, NULL);
4512                 return;
4513         }
4514
4515         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4516         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4517         if (ies == NULL) {
4518                 wpabuf_free(wps_ie);
4519                 wpas_p2p_scan_res_join(wpa_s, NULL);
4520                 return;
4521         }
4522         wpabuf_put_buf(ies, wps_ie);
4523         wpabuf_free(wps_ie);
4524
4525         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4526
4527         params.p2p_probe = 1;
4528         params.extra_ies = wpabuf_head(ies);
4529         params.extra_ies_len = wpabuf_len(ies);
4530
4531         if (!freq) {
4532                 int oper_freq;
4533                 /*
4534                  * If freq is not provided, check the operating freq of the GO
4535                  * and use a single channel scan on if possible.
4536                  */
4537                 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4538                                               wpa_s->pending_join_iface_addr);
4539                 if (oper_freq > 0)
4540                         freq = oper_freq;
4541         }
4542         if (freq > 0) {
4543                 freqs[0] = freq;
4544                 params.freqs = freqs;
4545         }
4546
4547         /*
4548          * Run a scan to update BSS table and start Provision Discovery once
4549          * the new scan results become available.
4550          */
4551         ret = wpa_drv_scan(wpa_s, &params);
4552         if (!ret) {
4553                 os_get_reltime(&wpa_s->scan_trigger_time);
4554                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
4555                 wpa_s->own_scan_requested = 1;
4556         }
4557
4558         wpabuf_free(ies);
4559
4560         if (ret) {
4561                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
4562                            "try again later");
4563                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4564                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4565                 wpas_p2p_check_join_scan_limit(wpa_s);
4566         }
4567 }
4568
4569
4570 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
4571 {
4572         struct wpa_supplicant *wpa_s = eloop_ctx;
4573         wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
4574 }
4575
4576
4577 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
4578                          const u8 *dev_addr, enum p2p_wps_method wps_method,
4579                          int auto_join, int op_freq,
4580                          const u8 *ssid, size_t ssid_len)
4581 {
4582         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
4583                    MACSTR " dev " MACSTR " op_freq=%d)%s",
4584                    MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
4585                    auto_join ? " (auto_join)" : "");
4586         if (ssid && ssid_len) {
4587                 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
4588                            wpa_ssid_txt(ssid, ssid_len));
4589         }
4590
4591         wpa_s->p2p_auto_pd = 0;
4592         wpa_s->p2p_auto_join = !!auto_join;
4593         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
4594         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
4595         wpa_s->pending_join_wps_method = wps_method;
4596
4597         /* Make sure we are not running find during connection establishment */
4598         wpas_p2p_stop_find(wpa_s);
4599
4600         wpa_s->p2p_join_scan_count = 0;
4601         wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
4602         return 0;
4603 }
4604
4605
4606 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
4607                                const u8 *ssid, size_t ssid_len)
4608 {
4609         struct wpa_supplicant *group;
4610         struct p2p_go_neg_results res;
4611         struct wpa_bss *bss;
4612
4613         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
4614         if (group == NULL)
4615                 return -1;
4616         if (group != wpa_s) {
4617                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
4618                           sizeof(group->p2p_pin));
4619                 group->p2p_wps_method = wpa_s->p2p_wps_method;
4620         } else {
4621                 /*
4622                  * Need to mark the current interface for p2p_group_formation
4623                  * when a separate group interface is not used. This is needed
4624                  * to allow p2p_cancel stop a pending p2p_connect-join.
4625                  * wpas_p2p_init_group_interface() addresses this for the case
4626                  * where a separate group interface is used.
4627                  */
4628                 wpa_s->global->p2p_group_formation = wpa_s;
4629         }
4630
4631         group->p2p_in_provisioning = 1;
4632         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
4633
4634         os_memset(&res, 0, sizeof(res));
4635         os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
4636         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
4637                   ETH_ALEN);
4638         res.wps_method = wpa_s->pending_join_wps_method;
4639         if (freq && ssid && ssid_len) {
4640                 res.freq = freq;
4641                 res.ssid_len = ssid_len;
4642                 os_memcpy(res.ssid, ssid, ssid_len);
4643         } else {
4644                 bss = wpa_bss_get_bssid_latest(wpa_s,
4645                                                wpa_s->pending_join_iface_addr);
4646                 if (bss) {
4647                         res.freq = bss->freq;
4648                         res.ssid_len = bss->ssid_len;
4649                         os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
4650                         wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
4651                                    bss->freq,
4652                                    wpa_ssid_txt(bss->ssid, bss->ssid_len));
4653                 }
4654         }
4655
4656         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
4657                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
4658                            "starting client");
4659                 wpa_drv_cancel_remain_on_channel(wpa_s);
4660                 wpa_s->off_channel_freq = 0;
4661                 wpa_s->roc_waiting_drv_freq = 0;
4662         }
4663         wpas_start_wps_enrollee(group, &res);
4664
4665         /*
4666          * Allow a longer timeout for join-a-running-group than normal 15
4667          * second group formation timeout since the GO may not have authorized
4668          * our connection yet.
4669          */
4670         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4671         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
4672                                wpa_s, NULL);
4673
4674         return 0;
4675 }
4676
4677
4678 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
4679                                 int *force_freq, int *pref_freq, int go)
4680 {
4681         struct wpa_used_freq_data *freqs;
4682         int res, best_freq, num_unused;
4683         unsigned int freq_in_use = 0, num, i;
4684
4685         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4686                           sizeof(struct wpa_used_freq_data));
4687         if (!freqs)
4688                 return -1;
4689
4690         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4691                                         wpa_s->num_multichan_concurrent);
4692
4693         /*
4694          * It is possible that the total number of used frequencies is bigger
4695          * than the number of frequencies used for P2P, so get the system wide
4696          * number of unused frequencies.
4697          */
4698         num_unused = wpas_p2p_num_unused_channels(wpa_s);
4699
4700         wpa_printf(MSG_DEBUG,
4701                    "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
4702                    freq, wpa_s->num_multichan_concurrent, num, num_unused);
4703
4704         if (freq > 0) {
4705                 int ret;
4706                 if (go)
4707                         ret = p2p_supported_freq(wpa_s->global->p2p, freq);
4708                 else
4709                         ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
4710                 if (!ret) {
4711                         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
4712                             ieee80211_is_dfs(freq)) {
4713                                 /*
4714                                  * If freq is a DFS channel and DFS is offloaded
4715                                  * to the driver, allow P2P GO to use it.
4716                                  */
4717                                 wpa_printf(MSG_DEBUG,
4718                                            "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver",
4719                                            freq);
4720                         } else {
4721                                 wpa_printf(MSG_DEBUG,
4722                                            "P2P: The forced channel (%u MHz) is not supported for P2P uses",
4723                                            freq);
4724                                 res = -3;
4725                                 goto exit_free;
4726                         }
4727                 }
4728
4729                 for (i = 0; i < num; i++) {
4730                         if (freqs[i].freq == freq)
4731                                 freq_in_use = 1;
4732                 }
4733
4734                 if (num_unused <= 0 && !freq_in_use) {
4735                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
4736                                    freq);
4737                         res = -2;
4738                         goto exit_free;
4739                 }
4740                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
4741                            "requested channel (%u MHz)", freq);
4742                 *force_freq = freq;
4743                 goto exit_ok;
4744         }
4745
4746         best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
4747
4748         /* We have a candidate frequency to use */
4749         if (best_freq > 0) {
4750                 if (*pref_freq == 0 && num_unused > 0) {
4751                         wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
4752                                    best_freq);
4753                         *pref_freq = best_freq;
4754                 } else {
4755                         wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
4756                                    best_freq);
4757                         *force_freq = best_freq;
4758                 }
4759         } else if (num_unused > 0) {
4760                 wpa_printf(MSG_DEBUG,
4761                            "P2P: Current operating channels are not available for P2P. Try to use another channel");
4762                 *force_freq = 0;
4763         } else {
4764                 wpa_printf(MSG_DEBUG,
4765                            "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
4766                 res = -2;
4767                 goto exit_free;
4768         }
4769
4770 exit_ok:
4771         res = 0;
4772 exit_free:
4773         os_free(freqs);
4774         return res;
4775 }
4776
4777
4778 /**
4779  * wpas_p2p_connect - Request P2P Group Formation to be started
4780  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4781  * @peer_addr: Address of the peer P2P Device
4782  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
4783  * @persistent_group: Whether to create a persistent group
4784  * @auto_join: Whether to select join vs. GO Negotiation automatically
4785  * @join: Whether to join an existing group (as a client) instead of starting
4786  *      Group Owner negotiation; @peer_addr is BSSID in that case
4787  * @auth: Whether to only authorize the connection instead of doing that and
4788  *      initiating Group Owner negotiation
4789  * @go_intent: GO Intent or -1 to use default
4790  * @freq: Frequency for the group or 0 for auto-selection
4791  * @persistent_id: Persistent group credentials to use for forcing GO
4792  *      parameters or -1 to generate new values (SSID/passphrase)
4793  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
4794  *      interoperability workaround when initiating group formation
4795  * @ht40: Start GO with 40 MHz channel width
4796  * @vht:  Start GO with VHT support
4797  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
4798  *      failure, -2 on failure due to channel not currently available,
4799  *      -3 if forced channel is not supported
4800  */
4801 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4802                      const char *pin, enum p2p_wps_method wps_method,
4803                      int persistent_group, int auto_join, int join, int auth,
4804                      int go_intent, int freq, int persistent_id, int pd,
4805                      int ht40, int vht)
4806 {
4807         int force_freq = 0, pref_freq = 0;
4808         int ret = 0, res;
4809         enum wpa_driver_if_type iftype;
4810         const u8 *if_addr;
4811         struct wpa_ssid *ssid = NULL;
4812
4813         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4814                 return -1;
4815
4816         if (persistent_id >= 0) {
4817                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
4818                 if (ssid == NULL || ssid->disabled != 2 ||
4819                     ssid->mode != WPAS_MODE_P2P_GO)
4820                         return -1;
4821         }
4822
4823         os_free(wpa_s->global->add_psk);
4824         wpa_s->global->add_psk = NULL;
4825
4826         wpa_s->global->p2p_fail_on_wps_complete = 0;
4827         wpa_s->global->pending_p2ps_group = 0;
4828
4829         if (go_intent < 0)
4830                 go_intent = wpa_s->conf->p2p_go_intent;
4831
4832         if (!auth)
4833                 wpa_s->p2p_long_listen = 0;
4834
4835         wpa_s->p2p_wps_method = wps_method;
4836         wpa_s->p2p_persistent_group = !!persistent_group;
4837         wpa_s->p2p_persistent_id = persistent_id;
4838         wpa_s->p2p_go_intent = go_intent;
4839         wpa_s->p2p_connect_freq = freq;
4840         wpa_s->p2p_fallback_to_go_neg = 0;
4841         wpa_s->p2p_pd_before_go_neg = !!pd;
4842         wpa_s->p2p_go_ht40 = !!ht40;
4843         wpa_s->p2p_go_vht = !!vht;
4844
4845         if (pin)
4846                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
4847         else if (wps_method == WPS_PIN_DISPLAY) {
4848                 ret = wps_generate_pin();
4849                 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin),
4850                                   "%08d", ret);
4851                 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res))
4852                         wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0';
4853                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
4854                            wpa_s->p2p_pin);
4855         } else
4856                 wpa_s->p2p_pin[0] = '\0';
4857
4858         if (join || auto_join) {
4859                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
4860                 if (auth) {
4861                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
4862                                    "connect a running group from " MACSTR,
4863                                    MAC2STR(peer_addr));
4864                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
4865                         return ret;
4866                 }
4867                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
4868                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
4869                                            iface_addr) < 0) {
4870                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
4871                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
4872                                          dev_addr);
4873                 }
4874                 if (auto_join) {
4875                         os_get_reltime(&wpa_s->p2p_auto_started);
4876                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
4877                                    "%ld.%06ld",
4878                                    wpa_s->p2p_auto_started.sec,
4879                                    wpa_s->p2p_auto_started.usec);
4880                 }
4881                 wpa_s->user_initiated_pd = 1;
4882                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
4883                                   auto_join, freq, NULL, 0) < 0)
4884                         return -1;
4885                 return ret;
4886         }
4887
4888         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
4889                                    go_intent == 15);
4890         if (res)
4891                 return res;
4892         wpas_p2p_set_own_freq_preference(wpa_s,
4893                                          force_freq ? force_freq : pref_freq);
4894
4895         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
4896
4897         if (wpa_s->create_p2p_iface) {
4898                 /* Prepare to add a new interface for the group */
4899                 iftype = WPA_IF_P2P_GROUP;
4900                 if (go_intent == 15)
4901                         iftype = WPA_IF_P2P_GO;
4902                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
4903                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
4904                                    "interface for the group");
4905                         return -1;
4906                 }
4907
4908                 if_addr = wpa_s->pending_interface_addr;
4909         } else
4910                 if_addr = wpa_s->own_addr;
4911
4912         if (auth) {
4913                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
4914                                          go_intent, if_addr,
4915                                          force_freq, persistent_group, ssid,
4916                                          pref_freq) < 0)
4917                         return -1;
4918                 return ret;
4919         }
4920
4921         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
4922                                   go_intent, if_addr, force_freq,
4923                                   persistent_group, ssid, pref_freq) < 0) {
4924                 if (wpa_s->create_p2p_iface)
4925                         wpas_p2p_remove_pending_group_interface(wpa_s);
4926                 return -1;
4927         }
4928         return ret;
4929 }
4930
4931
4932 /**
4933  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
4934  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4935  * @freq: Frequency of the channel in MHz
4936  * @duration: Duration of the stay on the channel in milliseconds
4937  *
4938  * This callback is called when the driver indicates that it has started the
4939  * requested remain-on-channel duration.
4940  */
4941 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
4942                                    unsigned int freq, unsigned int duration)
4943 {
4944         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4945                 return;
4946         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)",
4947                    wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
4948                    wpa_s->roc_waiting_drv_freq, freq, duration);
4949         if (wpa_s->off_channel_freq &&
4950             wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
4951                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
4952                               wpa_s->pending_listen_duration);
4953                 wpa_s->pending_listen_freq = 0;
4954         } else {
4955                 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
4956                            wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
4957                            freq, duration);
4958         }
4959 }
4960
4961
4962 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout)
4963 {
4964         /* Limit maximum Listen state time based on driver limitation. */
4965         if (timeout > wpa_s->max_remain_on_chan)
4966                 timeout = wpa_s->max_remain_on_chan;
4967
4968         return p2p_listen(wpa_s->global->p2p, timeout);
4969 }
4970
4971
4972 /**
4973  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
4974  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4975  * @freq: Frequency of the channel in MHz
4976  *
4977  * This callback is called when the driver indicates that a remain-on-channel
4978  * operation has been completed, i.e., the duration on the requested channel
4979  * has timed out.
4980  */
4981 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
4982                                           unsigned int freq)
4983 {
4984         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
4985                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
4986                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
4987         wpas_p2p_listen_work_done(wpa_s);
4988         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4989                 return;
4990         if (wpa_s->p2p_long_listen > 0)
4991                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
4992         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
4993                 return; /* P2P module started a new operation */
4994         if (offchannel_pending_action_tx(wpa_s))
4995                 return;
4996         if (wpa_s->p2p_long_listen > 0) {
4997                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
4998                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
4999         } else {
5000                 /*
5001                  * When listen duration is over, stop listen & update p2p_state
5002                  * to IDLE.
5003                  */
5004                 p2p_stop_listen(wpa_s->global->p2p);
5005         }
5006 }
5007
5008
5009 /**
5010  * wpas_p2p_group_remove - Remove a P2P group
5011  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5012  * @ifname: Network interface name of the group interface or "*" to remove all
5013  *      groups
5014  * Returns: 0 on success, -1 on failure
5015  *
5016  * This function is used to remove a P2P group. This can be used to disconnect
5017  * from a group in which the local end is a P2P Client or to end a P2P Group in
5018  * case the local end is the Group Owner. If a virtual network interface was
5019  * created for this group, that interface will be removed. Otherwise, only the
5020  * configured P2P group network will be removed from the interface.
5021  */
5022 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
5023 {
5024         struct wpa_global *global = wpa_s->global;
5025         struct wpa_supplicant *calling_wpa_s = wpa_s;
5026
5027         if (os_strcmp(ifname, "*") == 0) {
5028                 struct wpa_supplicant *prev;
5029                 wpa_s = global->ifaces;
5030                 while (wpa_s) {
5031                         prev = wpa_s;
5032                         wpa_s = wpa_s->next;
5033                         if (prev->p2p_group_interface !=
5034                             NOT_P2P_GROUP_INTERFACE ||
5035                             (prev->current_ssid &&
5036                              prev->current_ssid->p2p_group))
5037                                 wpas_p2p_disconnect_safely(prev, calling_wpa_s);
5038                 }
5039                 return 0;
5040         }
5041
5042         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5043                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5044                         break;
5045         }
5046
5047         return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s);
5048 }
5049
5050
5051 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
5052 {
5053         unsigned int r;
5054
5055         if (freq == 2) {
5056                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
5057                            "band");
5058                 if (wpa_s->best_24_freq > 0 &&
5059                     p2p_supported_freq_go(wpa_s->global->p2p,
5060                                           wpa_s->best_24_freq)) {
5061                         freq = wpa_s->best_24_freq;
5062                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
5063                                    "channel: %d MHz", freq);
5064                 } else {
5065                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5066                                 return -1;
5067                         freq = 2412 + (r % 3) * 25;
5068                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
5069                                    "channel: %d MHz", freq);
5070                 }
5071         }
5072
5073         if (freq == 5) {
5074                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
5075                            "band");
5076                 if (wpa_s->best_5_freq > 0 &&
5077                     p2p_supported_freq_go(wpa_s->global->p2p,
5078                                        wpa_s->best_5_freq)) {
5079                         freq = wpa_s->best_5_freq;
5080                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
5081                                    "channel: %d MHz", freq);
5082                 } else {
5083                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5084                                 return -1;
5085                         freq = 5180 + (r % 4) * 20;
5086                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5087                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
5088                                            "5 GHz channel for P2P group");
5089                                 return -1;
5090                         }
5091                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
5092                                    "channel: %d MHz", freq);
5093                 }
5094         }
5095
5096         if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5097                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5098                     ieee80211_is_dfs(freq)) {
5099                         /*
5100                          * If freq is a DFS channel and DFS is offloaded to the
5101                          * driver, allow P2P GO to use it.
5102                          */
5103                         wpa_printf(MSG_DEBUG, "P2P: "
5104                                    "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded",
5105                                    __func__, freq);
5106                         return freq;
5107                 }
5108                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
5109                            "(%u MHz) is not supported for P2P uses",
5110                            freq);
5111                 return -1;
5112         }
5113
5114         return freq;
5115 }
5116
5117
5118 static int wpas_p2p_select_freq_no_pref(struct wpa_supplicant *wpa_s,
5119                                         struct p2p_go_neg_results *params,
5120                                         const struct p2p_channels *channels)
5121 {
5122         unsigned int i, r;
5123
5124         /* first try some random selection of the social channels */
5125         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5126                 return -1;
5127
5128         for (i = 0; i < 3; i++) {
5129                 params->freq = 2412 + ((r + i) % 3) * 25;
5130                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5131                     freq_included(channels, params->freq) &&
5132                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5133                         goto out;
5134         }
5135
5136         /* try all channels in reg. class 81 */
5137         for (i = 0; i < 11; i++) {
5138                 params->freq = 2412 + i * 5;
5139                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5140                     freq_included(channels, params->freq) &&
5141                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5142                         goto out;
5143         }
5144
5145         /* try all channels in operating class 115 */
5146         for (i = 0; i < 4; i++) {
5147                 params->freq = 5180 + i * 20;
5148                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5149                     freq_included(channels, params->freq) &&
5150                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5151                         goto out;
5152         }
5153
5154         /* try all channels in operating class 124 */
5155         for (i = 0; i < 4; i++) {
5156                 params->freq = 5745 + i * 20;
5157                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5158                     freq_included(channels, params->freq) &&
5159                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5160                         goto out;
5161         }
5162
5163         /* try social channel class 180 channel 2 */
5164         params->freq = 58320 + 1 * 2160;
5165         if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5166             freq_included(channels, params->freq) &&
5167             p2p_supported_freq(wpa_s->global->p2p, params->freq))
5168                 goto out;
5169
5170         /* try all channels in reg. class 180 */
5171         for (i = 0; i < 4; i++) {
5172                 params->freq = 58320 + i * 2160;
5173                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5174                     freq_included(channels, params->freq) &&
5175                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5176                         goto out;
5177         }
5178
5179         wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed");
5180         return -1;
5181 out:
5182         wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)",
5183                    params->freq);
5184         return 0;
5185 }
5186
5187
5188 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
5189                                    struct p2p_go_neg_results *params,
5190                                    int freq, int ht40, int vht,
5191                                    const struct p2p_channels *channels)
5192 {
5193         struct wpa_used_freq_data *freqs;
5194         unsigned int pref_freq, cand_freq;
5195         unsigned int num, i;
5196
5197         os_memset(params, 0, sizeof(*params));
5198         params->role_go = 1;
5199         params->ht40 = ht40;
5200         params->vht = vht;
5201         if (freq) {
5202                 if (!freq_included(channels, freq)) {
5203                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
5204                                    "accepted", freq);
5205                         return -1;
5206                 }
5207                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced "
5208                            "frequency %d MHz", freq);
5209                 params->freq = freq;
5210         } else if (wpa_s->conf->p2p_oper_reg_class == 81 &&
5211                    wpa_s->conf->p2p_oper_channel >= 1 &&
5212                    wpa_s->conf->p2p_oper_channel <= 11 &&
5213                    freq_included(channels,
5214                                  2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
5215                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
5216                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5217                            "frequency %d MHz", params->freq);
5218         } else if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
5219                     wpa_s->conf->p2p_oper_reg_class == 116 ||
5220                     wpa_s->conf->p2p_oper_reg_class == 117 ||
5221                     wpa_s->conf->p2p_oper_reg_class == 124 ||
5222                     wpa_s->conf->p2p_oper_reg_class == 126 ||
5223                     wpa_s->conf->p2p_oper_reg_class == 127) &&
5224                    freq_included(channels,
5225                                  5000 + 5 * wpa_s->conf->p2p_oper_channel)) {
5226                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
5227                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5228                            "frequency %d MHz", params->freq);
5229         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5230                    wpa_s->best_overall_freq > 0 &&
5231                    p2p_supported_freq_go(wpa_s->global->p2p,
5232                                          wpa_s->best_overall_freq) &&
5233                    freq_included(channels, wpa_s->best_overall_freq)) {
5234                 params->freq = wpa_s->best_overall_freq;
5235                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
5236                            "channel %d MHz", params->freq);
5237         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5238                    wpa_s->best_24_freq > 0 &&
5239                    p2p_supported_freq_go(wpa_s->global->p2p,
5240                                          wpa_s->best_24_freq) &&
5241                    freq_included(channels, wpa_s->best_24_freq)) {
5242                 params->freq = wpa_s->best_24_freq;
5243                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
5244                            "channel %d MHz", params->freq);
5245         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5246                    wpa_s->best_5_freq > 0 &&
5247                    p2p_supported_freq_go(wpa_s->global->p2p,
5248                                          wpa_s->best_5_freq) &&
5249                    freq_included(channels, wpa_s->best_5_freq)) {
5250                 params->freq = wpa_s->best_5_freq;
5251                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
5252                            "channel %d MHz", params->freq);
5253         } else if ((pref_freq = p2p_get_pref_freq(wpa_s->global->p2p,
5254                                                   channels))) {
5255                 params->freq = pref_freq;
5256                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
5257                            "channels", params->freq);
5258         } else {
5259                 /* no preference, select some channel */
5260                 if (wpas_p2p_select_freq_no_pref(wpa_s, params, channels) < 0)
5261                         return -1;
5262         }
5263
5264         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5265                           sizeof(struct wpa_used_freq_data));
5266         if (!freqs)
5267                 return -1;
5268
5269         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5270                                         wpa_s->num_multichan_concurrent);
5271
5272         cand_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5273
5274         /* First try the best used frequency if possible */
5275         if (!freq && cand_freq > 0 && freq_included(channels, cand_freq)) {
5276                 params->freq = cand_freq;
5277         } else if (!freq) {
5278                 /* Try any of the used frequencies */
5279                 for (i = 0; i < num; i++) {
5280                         if (freq_included(channels, freqs[i].freq)) {
5281                                 wpa_printf(MSG_DEBUG, "P2P: Force GO on a channel we are already using (%u MHz)",
5282                                            freqs[i].freq);
5283                                 params->freq = freqs[i].freq;
5284                                 break;
5285                         }
5286                 }
5287
5288                 if (i == num) {
5289                         if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5290                                 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using");
5291                                 os_free(freqs);
5292                                 return -1;
5293                         } else {
5294                                 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using. Use one of the free channels");
5295                         }
5296                 }
5297         } else {
5298                 for (i = 0; i < num; i++) {
5299                         if (freqs[i].freq == freq)
5300                                 break;
5301                 }
5302
5303                 if (i == num) {
5304                         if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5305                                 if (freq)
5306                                         wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on freq (%u MHz) as all the channels are in use", freq);
5307                                 os_free(freqs);
5308                                 return -1;
5309                         } else {
5310                                 wpa_printf(MSG_DEBUG, "P2P: Use one of the free channels");
5311                         }
5312                 }
5313         }
5314
5315         os_free(freqs);
5316         return 0;
5317 }
5318
5319
5320 static struct wpa_supplicant *
5321 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
5322                          int go)
5323 {
5324         struct wpa_supplicant *group_wpa_s;
5325
5326         if (!wpas_p2p_create_iface(wpa_s)) {
5327                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
5328                         "operations");
5329                 wpa_s->p2p_first_connection_timeout = 0;
5330                 return wpa_s;
5331         }
5332
5333         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
5334                                          WPA_IF_P2P_CLIENT) < 0) {
5335                 wpa_msg_global(wpa_s, MSG_ERROR,
5336                                "P2P: Failed to add group interface");
5337                 return NULL;
5338         }
5339         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
5340         if (group_wpa_s == NULL) {
5341                 wpa_msg_global(wpa_s, MSG_ERROR,
5342                                "P2P: Failed to initialize group interface");
5343                 wpas_p2p_remove_pending_group_interface(wpa_s);
5344                 return NULL;
5345         }
5346
5347         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
5348                 group_wpa_s->ifname);
5349         group_wpa_s->p2p_first_connection_timeout = 0;
5350         return group_wpa_s;
5351 }
5352
5353
5354 /**
5355  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
5356  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5357  * @persistent_group: Whether to create a persistent group
5358  * @freq: Frequency for the group or 0 to indicate no hardcoding
5359  * @ht40: Start GO with 40 MHz channel width
5360  * @vht:  Start GO with VHT support
5361  * Returns: 0 on success, -1 on failure
5362  *
5363  * This function creates a new P2P group with the local end as the Group Owner,
5364  * i.e., without using Group Owner Negotiation.
5365  */
5366 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
5367                        int freq, int ht40, int vht)
5368 {
5369         struct p2p_go_neg_results params;
5370
5371         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5372                 return -1;
5373
5374         os_free(wpa_s->global->add_psk);
5375         wpa_s->global->add_psk = NULL;
5376
5377         /* Make sure we are not running find during connection establishment */
5378         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
5379         wpas_p2p_stop_find_oper(wpa_s);
5380
5381         freq = wpas_p2p_select_go_freq(wpa_s, freq);
5382         if (freq < 0)
5383                 return -1;
5384
5385         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, NULL))
5386                 return -1;
5387         if (params.freq &&
5388             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
5389                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5390                     ieee80211_is_dfs(params.freq)) {
5391                         /*
5392                          * If freq is a DFS channel and DFS is offloaded to the
5393                          * driver, allow P2P GO to use it.
5394                          */
5395                         wpa_printf(MSG_DEBUG,
5396                                    "P2P: %s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to driver",
5397                                 __func__, params.freq);
5398                 } else {
5399                         wpa_printf(MSG_DEBUG,
5400                                    "P2P: The selected channel for GO (%u MHz) is not supported for P2P uses",
5401                                    params.freq);
5402                         return -1;
5403                 }
5404         }
5405         p2p_go_params(wpa_s->global->p2p, &params);
5406         params.persistent_group = persistent_group;
5407
5408         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
5409         if (wpa_s == NULL)
5410                 return -1;
5411         wpas_start_wps_go(wpa_s, &params, 0);
5412
5413         return 0;
5414 }
5415
5416
5417 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
5418                                  struct wpa_ssid *params, int addr_allocated,
5419                                  int freq)
5420 {
5421         struct wpa_ssid *ssid;
5422
5423         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
5424         if (wpa_s == NULL)
5425                 return -1;
5426         wpa_s->p2p_last_4way_hs_fail = NULL;
5427
5428         wpa_supplicant_ap_deinit(wpa_s);
5429
5430         ssid = wpa_config_add_network(wpa_s->conf);
5431         if (ssid == NULL)
5432                 return -1;
5433         wpa_config_set_network_defaults(ssid);
5434         ssid->temporary = 1;
5435         ssid->proto = WPA_PROTO_RSN;
5436         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
5437         ssid->group_cipher = WPA_CIPHER_CCMP;
5438         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
5439         ssid->ssid = os_malloc(params->ssid_len);
5440         if (ssid->ssid == NULL) {
5441                 wpa_config_remove_network(wpa_s->conf, ssid->id);
5442                 return -1;
5443         }
5444         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
5445         ssid->ssid_len = params->ssid_len;
5446         ssid->p2p_group = 1;
5447         ssid->export_keys = 1;
5448         if (params->psk_set) {
5449                 os_memcpy(ssid->psk, params->psk, 32);
5450                 ssid->psk_set = 1;
5451         }
5452         if (params->passphrase)
5453                 ssid->passphrase = os_strdup(params->passphrase);
5454
5455         wpa_s->show_group_started = 1;
5456         wpa_s->p2p_in_invitation = 1;
5457         wpa_s->p2p_invite_go_freq = freq;
5458
5459         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5460                              NULL);
5461         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5462                                wpas_p2p_group_formation_timeout,
5463                                wpa_s->parent, NULL);
5464         wpa_supplicant_select_network(wpa_s, ssid);
5465
5466         return 0;
5467 }
5468
5469
5470 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
5471                                   struct wpa_ssid *ssid, int addr_allocated,
5472                                   int force_freq, int neg_freq, int ht40,
5473                                   int vht, const struct p2p_channels *channels,
5474                                   int connection_timeout)
5475 {
5476         struct p2p_go_neg_results params;
5477         int go = 0, freq;
5478
5479         if (ssid->disabled != 2 || ssid->ssid == NULL)
5480                 return -1;
5481
5482         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
5483             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
5484                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
5485                            "already running");
5486                 return 0;
5487         }
5488
5489         os_free(wpa_s->global->add_psk);
5490         wpa_s->global->add_psk = NULL;
5491
5492         /* Make sure we are not running find during connection establishment */
5493         wpas_p2p_stop_find_oper(wpa_s);
5494
5495         wpa_s->p2p_fallback_to_go_neg = 0;
5496
5497         if (ssid->mode == WPAS_MODE_P2P_GO) {
5498                 if (force_freq > 0) {
5499                         freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
5500                         if (freq < 0)
5501                                 return -1;
5502                 } else {
5503                         freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
5504                         if (freq < 0 ||
5505                             (freq > 0 && !freq_included(channels, freq)))
5506                                 freq = 0;
5507                 }
5508         } else if (ssid->mode == WPAS_MODE_INFRA) {
5509                 freq = neg_freq;
5510                 if (freq <= 0 || !freq_included(channels, freq)) {
5511                         struct os_reltime now;
5512                         struct wpa_bss *bss =
5513                                 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid);
5514
5515                         os_get_reltime(&now);
5516                         if (bss &&
5517                             !os_reltime_expired(&now, &bss->last_update, 5) &&
5518                             freq_included(channels, bss->freq))
5519                                 freq = bss->freq;
5520                         else
5521                                 freq = 0;
5522                 }
5523
5524                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq);
5525         } else {
5526                 return -1;
5527         }
5528
5529         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, channels))
5530                 return -1;
5531
5532         params.role_go = 1;
5533         params.psk_set = ssid->psk_set;
5534         if (params.psk_set)
5535                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
5536         if (ssid->passphrase) {
5537                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
5538                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
5539                                    "persistent group");
5540                         return -1;
5541                 }
5542                 os_strlcpy(params.passphrase, ssid->passphrase,
5543                            sizeof(params.passphrase));
5544         }
5545         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
5546         params.ssid_len = ssid->ssid_len;
5547         params.persistent_group = 1;
5548
5549         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
5550         if (wpa_s == NULL)
5551                 return -1;
5552
5553         p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS);
5554
5555         wpa_s->p2p_first_connection_timeout = connection_timeout;
5556         wpas_start_wps_go(wpa_s, &params, 0);
5557
5558         return 0;
5559 }
5560
5561
5562 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
5563                                struct wpabuf *proberesp_ies)
5564 {
5565         struct wpa_supplicant *wpa_s = ctx;
5566         if (wpa_s->ap_iface) {
5567                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
5568                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
5569                         wpabuf_free(beacon_ies);
5570                         wpabuf_free(proberesp_ies);
5571                         return;
5572                 }
5573                 if (beacon_ies) {
5574                         wpabuf_free(hapd->p2p_beacon_ie);
5575                         hapd->p2p_beacon_ie = beacon_ies;
5576                 }
5577                 wpabuf_free(hapd->p2p_probe_resp_ie);
5578                 hapd->p2p_probe_resp_ie = proberesp_ies;
5579         } else {
5580                 wpabuf_free(beacon_ies);
5581                 wpabuf_free(proberesp_ies);
5582         }
5583         wpa_supplicant_ap_update_beacon(wpa_s);
5584 }
5585
5586
5587 static void wpas_p2p_idle_update(void *ctx, int idle)
5588 {
5589         struct wpa_supplicant *wpa_s = ctx;
5590         if (!wpa_s->ap_iface)
5591                 return;
5592         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
5593         if (idle) {
5594                 if (wpa_s->global->p2p_fail_on_wps_complete &&
5595                     wpa_s->p2p_in_provisioning) {
5596                         wpas_p2p_grpform_fail_after_wps(wpa_s);
5597                         return;
5598                 }
5599                 wpas_p2p_set_group_idle_timeout(wpa_s);
5600         } else
5601                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
5602 }
5603
5604
5605 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
5606                                        struct wpa_ssid *ssid)
5607 {
5608         struct p2p_group *group;
5609         struct p2p_group_config *cfg;
5610
5611         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5612                 return NULL;
5613
5614         cfg = os_zalloc(sizeof(*cfg));
5615         if (cfg == NULL)
5616                 return NULL;
5617
5618         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
5619                 cfg->persistent_group = 2;
5620         else if (ssid->p2p_persistent_group)
5621                 cfg->persistent_group = 1;
5622         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
5623         if (wpa_s->max_stations &&
5624             wpa_s->max_stations < wpa_s->conf->max_num_sta)
5625                 cfg->max_clients = wpa_s->max_stations;
5626         else
5627                 cfg->max_clients = wpa_s->conf->max_num_sta;
5628         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
5629         cfg->ssid_len = ssid->ssid_len;
5630         cfg->freq = ssid->frequency;
5631         cfg->cb_ctx = wpa_s;
5632         cfg->ie_update = wpas_p2p_ie_update;
5633         cfg->idle_update = wpas_p2p_idle_update;
5634
5635         group = p2p_group_init(wpa_s->global->p2p, cfg);
5636         if (group == NULL)
5637                 os_free(cfg);
5638         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
5639                 p2p_group_notif_formation_done(group);
5640         wpa_s->p2p_group = group;
5641         return group;
5642 }
5643
5644
5645 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5646                           int registrar)
5647 {
5648         struct wpa_ssid *ssid = wpa_s->current_ssid;
5649
5650         if (!wpa_s->p2p_in_provisioning) {
5651                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
5652                            "provisioning not in progress");
5653                 return;
5654         }
5655
5656         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
5657                 u8 go_dev_addr[ETH_ALEN];
5658                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
5659                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
5660                                           ssid->ssid_len);
5661                 /* Clear any stored provisioning info */
5662                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
5663         }
5664
5665         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5666                              NULL);
5667         wpa_s->p2p_go_group_formation_completed = 1;
5668         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
5669                 /*
5670                  * Use a separate timeout for initial data connection to
5671                  * complete to allow the group to be removed automatically if
5672                  * something goes wrong in this step before the P2P group idle
5673                  * timeout mechanism is taken into use.
5674                  */
5675                 wpa_dbg(wpa_s, MSG_DEBUG,
5676                         "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
5677                         P2P_MAX_INITIAL_CONN_WAIT);
5678                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5679                                        wpas_p2p_group_formation_timeout,
5680                                        wpa_s->parent, NULL);
5681         } else if (ssid) {
5682                 /*
5683                  * Use a separate timeout for initial data connection to
5684                  * complete to allow the group to be removed automatically if
5685                  * the client does not complete data connection successfully.
5686                  */
5687                 wpa_dbg(wpa_s, MSG_DEBUG,
5688                         "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
5689                         P2P_MAX_INITIAL_CONN_WAIT_GO);
5690                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
5691                                        wpas_p2p_group_formation_timeout,
5692                                        wpa_s->parent, NULL);
5693                 /*
5694                  * Complete group formation on first successful data connection
5695                  */
5696                 wpa_s->p2p_go_group_formation_completed = 0;
5697         }
5698         if (wpa_s->global->p2p)
5699                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
5700         wpas_group_formation_completed(wpa_s, 1);
5701 }
5702
5703
5704 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
5705                          struct wps_event_fail *fail)
5706 {
5707         if (!wpa_s->p2p_in_provisioning) {
5708                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
5709                            "provisioning not in progress");
5710                 return;
5711         }
5712
5713         if (wpa_s->go_params) {
5714                 p2p_clear_provisioning_info(
5715                         wpa_s->global->p2p,
5716                         wpa_s->go_params->peer_device_addr);
5717         }
5718
5719         wpas_notify_p2p_wps_failed(wpa_s, fail);
5720
5721         if (wpa_s == wpa_s->global->p2p_group_formation) {
5722                 /*
5723                  * Allow some time for the failed WPS negotiation exchange to
5724                  * complete, but remove the group since group formation cannot
5725                  * succeed after provisioning failure.
5726                  */
5727                 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
5728                 wpa_s->global->p2p_fail_on_wps_complete = 1;
5729                 eloop_deplete_timeout(0, 50000,
5730                                       wpas_p2p_group_formation_timeout,
5731                                       wpa_s->parent, NULL);
5732         }
5733 }
5734
5735
5736 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
5737 {
5738         if (!wpa_s->global->p2p_fail_on_wps_complete ||
5739             !wpa_s->p2p_in_provisioning)
5740                 return 0;
5741
5742         wpas_p2p_grpform_fail_after_wps(wpa_s);
5743
5744         return 1;
5745 }
5746
5747
5748 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5749                        const char *config_method,
5750                        enum wpas_p2p_prov_disc_use use,
5751                        struct p2ps_provision *p2ps_prov)
5752 {
5753         u16 config_methods;
5754
5755         wpa_s->global->pending_p2ps_group = 0;
5756         wpa_s->p2p_fallback_to_go_neg = 0;
5757         wpa_s->pending_pd_use = NORMAL_PD;
5758         if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) {
5759                 p2ps_prov->conncap = p2ps_group_capability(
5760                         wpa_s, P2PS_SETUP_NONE, p2ps_prov->role);
5761                 wpa_printf(MSG_DEBUG,
5762                            "P2P: %s conncap: %d - ASP parsed: %x %x %d %s",
5763                            __func__, p2ps_prov->conncap,
5764                            p2ps_prov->adv_id, p2ps_prov->conncap,
5765                            p2ps_prov->status, p2ps_prov->info);
5766
5767                 config_methods = 0;
5768         } else if (os_strncmp(config_method, "display", 7) == 0)
5769                 config_methods = WPS_CONFIG_DISPLAY;
5770         else if (os_strncmp(config_method, "keypad", 6) == 0)
5771                 config_methods = WPS_CONFIG_KEYPAD;
5772         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
5773                  os_strncmp(config_method, "pushbutton", 10) == 0)
5774                 config_methods = WPS_CONFIG_PUSHBUTTON;
5775         else {
5776                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
5777                 os_free(p2ps_prov);
5778                 return -1;
5779         }
5780
5781         if (use == WPAS_P2P_PD_AUTO) {
5782                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
5783                 wpa_s->pending_pd_config_methods = config_methods;
5784                 wpa_s->p2p_auto_pd = 1;
5785                 wpa_s->p2p_auto_join = 0;
5786                 wpa_s->pending_pd_before_join = 0;
5787                 wpa_s->auto_pd_scan_retry = 0;
5788                 wpas_p2p_stop_find(wpa_s);
5789                 wpa_s->p2p_join_scan_count = 0;
5790                 os_get_reltime(&wpa_s->p2p_auto_started);
5791                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
5792                            wpa_s->p2p_auto_started.sec,
5793                            wpa_s->p2p_auto_started.usec);
5794                 wpas_p2p_join_scan(wpa_s, NULL);
5795                 return 0;
5796         }
5797
5798         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) {
5799                 os_free(p2ps_prov);
5800                 return -1;
5801         }
5802
5803         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov,
5804                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
5805                                  0, 1);
5806 }
5807
5808
5809 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
5810                               char *end)
5811 {
5812         return p2p_scan_result_text(ies, ies_len, buf, end);
5813 }
5814
5815
5816 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
5817 {
5818         if (!offchannel_pending_action_tx(wpa_s))
5819                 return;
5820
5821         wpas_p2p_action_tx_clear(wpa_s);
5822
5823         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
5824                    "operation request");
5825         offchannel_clear_pending_action_tx(wpa_s);
5826 }
5827
5828
5829 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
5830                   enum p2p_discovery_type type,
5831                   unsigned int num_req_dev_types, const u8 *req_dev_types,
5832                   const u8 *dev_id, unsigned int search_delay,
5833                   u8 seek_cnt, const char **seek_string, int freq)
5834 {
5835         wpas_p2p_clear_pending_action_tx(wpa_s);
5836         wpa_s->p2p_long_listen = 0;
5837
5838         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
5839             wpa_s->p2p_in_provisioning)
5840                 return -1;
5841
5842         wpa_supplicant_cancel_sched_scan(wpa_s);
5843
5844         return p2p_find(wpa_s->global->p2p, timeout, type,
5845                         num_req_dev_types, req_dev_types, dev_id,
5846                         search_delay, seek_cnt, seek_string, freq);
5847 }
5848
5849
5850 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s,
5851                                             struct wpa_scan_results *scan_res)
5852 {
5853         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
5854
5855         if (wpa_s->p2p_scan_work) {
5856                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
5857                 wpa_s->p2p_scan_work = NULL;
5858                 radio_work_done(work);
5859         }
5860
5861         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5862                 return;
5863
5864         /*
5865          * Indicate that results have been processed so that the P2P module can
5866          * continue pending tasks.
5867          */
5868         p2p_scan_res_handled(wpa_s->global->p2p);
5869 }
5870
5871
5872 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
5873 {
5874         wpas_p2p_clear_pending_action_tx(wpa_s);
5875         wpa_s->p2p_long_listen = 0;
5876         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
5877         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5878
5879         if (wpa_s->global->p2p)
5880                 p2p_stop_find(wpa_s->global->p2p);
5881
5882         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
5883                 wpa_printf(MSG_DEBUG,
5884                            "P2P: Do not consider the scan results after stop_find");
5885                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search;
5886         }
5887 }
5888
5889
5890 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
5891 {
5892         wpas_p2p_stop_find_oper(wpa_s);
5893         if (!wpa_s->global->pending_group_iface_for_p2ps)
5894                 wpas_p2p_remove_pending_group_interface(wpa_s);
5895 }
5896
5897
5898 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
5899 {
5900         struct wpa_supplicant *wpa_s = eloop_ctx;
5901         wpa_s->p2p_long_listen = 0;
5902 }
5903
5904
5905 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
5906 {
5907         int res;
5908
5909         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5910                 return -1;
5911
5912         wpa_supplicant_cancel_sched_scan(wpa_s);
5913         wpas_p2p_clear_pending_action_tx(wpa_s);
5914
5915         if (timeout == 0) {
5916                 /*
5917                  * This is a request for unlimited Listen state. However, at
5918                  * least for now, this is mapped to a Listen state for one
5919                  * hour.
5920                  */
5921                 timeout = 3600;
5922         }
5923         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
5924         wpa_s->p2p_long_listen = 0;
5925
5926         /*
5927          * Stop previous find/listen operation to avoid trying to request a new
5928          * remain-on-channel operation while the driver is still running the
5929          * previous one.
5930          */
5931         if (wpa_s->global->p2p)
5932                 p2p_stop_find(wpa_s->global->p2p);
5933
5934         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
5935         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
5936                 wpa_s->p2p_long_listen = timeout * 1000;
5937                 eloop_register_timeout(timeout, 0,
5938                                        wpas_p2p_long_listen_timeout,
5939                                        wpa_s, NULL);
5940         }
5941
5942         return res;
5943 }
5944
5945
5946 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
5947                           u8 *buf, size_t len, int p2p_group)
5948 {
5949         struct wpabuf *p2p_ie;
5950         int ret;
5951
5952         if (wpa_s->global->p2p_disabled)
5953                 return -1;
5954         /*
5955          * Advertize mandatory cross connection capability even on
5956          * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP.
5957          */
5958         if (wpa_s->conf->p2p_disabled && p2p_group)
5959                 return -1;
5960         if (wpa_s->global->p2p == NULL)
5961                 return -1;
5962         if (bss == NULL)
5963                 return -1;
5964
5965         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
5966         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
5967                                p2p_group, p2p_ie);
5968         wpabuf_free(p2p_ie);
5969
5970         return ret;
5971 }
5972
5973
5974 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
5975                           const u8 *dst, const u8 *bssid,
5976                           const u8 *ie, size_t ie_len, int ssi_signal)
5977 {
5978         if (wpa_s->global->p2p_disabled)
5979                 return 0;
5980         if (wpa_s->global->p2p == NULL)
5981                 return 0;
5982
5983         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
5984                                  ie, ie_len)) {
5985         case P2P_PREQ_NOT_P2P:
5986                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
5987                                  ssi_signal);
5988                 /* fall through */
5989         case P2P_PREQ_MALFORMED:
5990         case P2P_PREQ_NOT_LISTEN:
5991         case P2P_PREQ_NOT_PROCESSED:
5992         default: /* make gcc happy */
5993                 return 0;
5994         case P2P_PREQ_PROCESSED:
5995                 return 1;
5996         }
5997 }
5998
5999
6000 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
6001                         const u8 *sa, const u8 *bssid,
6002                         u8 category, const u8 *data, size_t len, int freq)
6003 {
6004         if (wpa_s->global->p2p_disabled)
6005                 return;
6006         if (wpa_s->global->p2p == NULL)
6007                 return;
6008
6009         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
6010                       freq);
6011 }
6012
6013
6014 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
6015 {
6016         if (wpa_s->global->p2p_disabled)
6017                 return;
6018         if (wpa_s->global->p2p == NULL)
6019                 return;
6020
6021         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
6022 }
6023
6024
6025 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
6026 {
6027         p2p_group_deinit(wpa_s->p2p_group);
6028         wpa_s->p2p_group = NULL;
6029
6030         wpa_s->ap_configured_cb = NULL;
6031         wpa_s->ap_configured_cb_ctx = NULL;
6032         wpa_s->ap_configured_cb_data = NULL;
6033         wpa_s->connect_without_scan = NULL;
6034 }
6035
6036
6037 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
6038 {
6039         wpa_s->p2p_long_listen = 0;
6040
6041         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6042                 return -1;
6043
6044         return p2p_reject(wpa_s->global->p2p, addr);
6045 }
6046
6047
6048 /* Invite to reinvoke a persistent group */
6049 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6050                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
6051                     int ht40, int vht, int pref_freq)
6052 {
6053         enum p2p_invite_role role;
6054         u8 *bssid = NULL;
6055         int force_freq = 0;
6056         int res;
6057         int no_pref_freq_given = pref_freq == 0;
6058
6059         wpa_s->global->p2p_invite_group = NULL;
6060         if (peer_addr)
6061                 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
6062         else
6063                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
6064
6065         wpa_s->p2p_persistent_go_freq = freq;
6066         wpa_s->p2p_go_ht40 = !!ht40;
6067         if (ssid->mode == WPAS_MODE_P2P_GO) {
6068                 role = P2P_INVITE_ROLE_GO;
6069                 if (peer_addr == NULL) {
6070                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
6071                                    "address in invitation command");
6072                         return -1;
6073                 }
6074                 if (wpas_p2p_create_iface(wpa_s)) {
6075                         if (wpas_p2p_add_group_interface(wpa_s,
6076                                                          WPA_IF_P2P_GO) < 0) {
6077                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
6078                                            "allocate a new interface for the "
6079                                            "group");
6080                                 return -1;
6081                         }
6082                         bssid = wpa_s->pending_interface_addr;
6083                 } else
6084                         bssid = wpa_s->own_addr;
6085         } else {
6086                 role = P2P_INVITE_ROLE_CLIENT;
6087                 peer_addr = ssid->bssid;
6088         }
6089         wpa_s->pending_invite_ssid_id = ssid->id;
6090
6091         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6092                                    role == P2P_INVITE_ROLE_GO);
6093         if (res)
6094                 return res;
6095
6096         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6097                 return -1;
6098
6099         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
6100             no_pref_freq_given && pref_freq > 0 &&
6101             wpa_s->num_multichan_concurrent > 1 &&
6102             wpas_p2p_num_unused_channels(wpa_s) > 0) {
6103                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
6104                            pref_freq);
6105                 pref_freq = 0;
6106         }
6107
6108         /*
6109          * Stop any find/listen operations before invitation and possibly
6110          * connection establishment.
6111          */
6112         wpas_p2p_stop_find_oper(wpa_s);
6113
6114         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6115                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
6116                           1, pref_freq, -1);
6117 }
6118
6119
6120 /* Invite to join an active group */
6121 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
6122                           const u8 *peer_addr, const u8 *go_dev_addr)
6123 {
6124         struct wpa_global *global = wpa_s->global;
6125         enum p2p_invite_role role;
6126         u8 *bssid = NULL;
6127         struct wpa_ssid *ssid;
6128         int persistent;
6129         int freq = 0, force_freq = 0, pref_freq = 0;
6130         int res;
6131
6132         wpa_s->p2p_persistent_go_freq = 0;
6133         wpa_s->p2p_go_ht40 = 0;
6134         wpa_s->p2p_go_vht = 0;
6135
6136         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6137                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
6138                         break;
6139         }
6140         if (wpa_s == NULL) {
6141                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
6142                 return -1;
6143         }
6144
6145         ssid = wpa_s->current_ssid;
6146         if (ssid == NULL) {
6147                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
6148                            "invitation");
6149                 return -1;
6150         }
6151
6152         wpa_s->global->p2p_invite_group = wpa_s;
6153         persistent = ssid->p2p_persistent_group &&
6154                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
6155                                         ssid->ssid, ssid->ssid_len);
6156
6157         if (ssid->mode == WPAS_MODE_P2P_GO) {
6158                 role = P2P_INVITE_ROLE_ACTIVE_GO;
6159                 bssid = wpa_s->own_addr;
6160                 if (go_dev_addr == NULL)
6161                         go_dev_addr = wpa_s->global->p2p_dev_addr;
6162                 freq = ssid->frequency;
6163         } else {
6164                 role = P2P_INVITE_ROLE_CLIENT;
6165                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
6166                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
6167                                    "invite to current group");
6168                         return -1;
6169                 }
6170                 bssid = wpa_s->bssid;
6171                 if (go_dev_addr == NULL &&
6172                     !is_zero_ether_addr(wpa_s->go_dev_addr))
6173                         go_dev_addr = wpa_s->go_dev_addr;
6174                 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6175                         (int) wpa_s->assoc_freq;
6176         }
6177         wpa_s->parent->pending_invite_ssid_id = -1;
6178
6179         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6180                 return -1;
6181
6182         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6183                                    role == P2P_INVITE_ROLE_ACTIVE_GO);
6184         if (res)
6185                 return res;
6186         wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
6187
6188         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6189                           ssid->ssid, ssid->ssid_len, force_freq,
6190                           go_dev_addr, persistent, pref_freq, -1);
6191 }
6192
6193
6194 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
6195 {
6196         struct wpa_ssid *ssid = wpa_s->current_ssid;
6197         u8 go_dev_addr[ETH_ALEN];
6198         int network_id = -1;
6199         int persistent;
6200         int freq;
6201         u8 ip[3 * 4];
6202         char ip_addr[100];
6203
6204         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
6205                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6206                                      wpa_s->parent, NULL);
6207         }
6208
6209         if (!wpa_s->show_group_started || !ssid)
6210                 return;
6211
6212         wpa_s->show_group_started = 0;
6213
6214         os_memset(go_dev_addr, 0, ETH_ALEN);
6215         if (ssid->bssid_set)
6216                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
6217         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6218                                                ssid->ssid_len);
6219         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
6220
6221         if (wpa_s->global->p2p_group_formation == wpa_s)
6222                 wpa_s->global->p2p_group_formation = NULL;
6223
6224         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6225                 (int) wpa_s->assoc_freq;
6226
6227         ip_addr[0] = '\0';
6228         if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
6229                 int res;
6230
6231                 res = os_snprintf(ip_addr, sizeof(ip_addr),
6232                                   " ip_addr=%u.%u.%u.%u "
6233                                   "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
6234                                   ip[0], ip[1], ip[2], ip[3],
6235                                   ip[4], ip[5], ip[6], ip[7],
6236                                   ip[8], ip[9], ip[10], ip[11]);
6237                 if (os_snprintf_error(sizeof(ip_addr), res))
6238                         ip_addr[0] = '\0';
6239         }
6240
6241         wpas_p2p_group_started(wpa_s, 0, ssid, freq,
6242                                ssid->passphrase == NULL && ssid->psk_set ?
6243                                ssid->psk : NULL,
6244                                ssid->passphrase, go_dev_addr, persistent,
6245                                ip_addr);
6246
6247         if (persistent)
6248                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
6249                                                              ssid, go_dev_addr);
6250         if (network_id < 0)
6251                 network_id = ssid->id;
6252         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
6253 }
6254
6255
6256 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
6257                           u32 interval1, u32 duration2, u32 interval2)
6258 {
6259         int ret;
6260
6261         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6262                 return -1;
6263
6264         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
6265             wpa_s->current_ssid == NULL ||
6266             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
6267                 return -1;
6268
6269         ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
6270                                wpa_s->own_addr, wpa_s->assoc_freq,
6271                                duration1, interval1, duration2, interval2);
6272         if (ret == 0)
6273                 wpa_s->waiting_presence_resp = 1;
6274
6275         return ret;
6276 }
6277
6278
6279 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
6280                         unsigned int interval)
6281 {
6282         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6283                 return -1;
6284
6285         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
6286 }
6287
6288
6289 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
6290 {
6291         if (wpa_s->current_ssid == NULL) {
6292                 /*
6293                  * current_ssid can be cleared when P2P client interface gets
6294                  * disconnected, so assume this interface was used as P2P
6295                  * client.
6296                  */
6297                 return 1;
6298         }
6299         return wpa_s->current_ssid->p2p_group &&
6300                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
6301 }
6302
6303
6304 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
6305 {
6306         struct wpa_supplicant *wpa_s = eloop_ctx;
6307
6308         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
6309                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
6310                            "disabled");
6311                 return;
6312         }
6313
6314         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
6315                    "group");
6316         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
6317 }
6318
6319
6320 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
6321 {
6322         int timeout;
6323
6324         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6325                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6326
6327         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6328                 return;
6329
6330         timeout = wpa_s->conf->p2p_group_idle;
6331         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
6332             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
6333             timeout = P2P_MAX_CLIENT_IDLE;
6334
6335         if (timeout == 0)
6336                 return;
6337
6338         if (timeout < 0) {
6339                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
6340                         timeout = 0; /* special client mode no-timeout */
6341                 else
6342                         return;
6343         }
6344
6345         if (wpa_s->p2p_in_provisioning) {
6346                 /*
6347                  * Use the normal group formation timeout during the
6348                  * provisioning phase to avoid terminating this process too
6349                  * early due to group idle timeout.
6350                  */
6351                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6352                            "during provisioning");
6353                 return;
6354         }
6355
6356         if (wpa_s->show_group_started) {
6357                 /*
6358                  * Use the normal group formation timeout between the end of
6359                  * the provisioning phase and completion of 4-way handshake to
6360                  * avoid terminating this process too early due to group idle
6361                  * timeout.
6362                  */
6363                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6364                            "while waiting for initial 4-way handshake to "
6365                            "complete");
6366                 return;
6367         }
6368
6369         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
6370                    timeout);
6371         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
6372                                wpa_s, NULL);
6373 }
6374
6375
6376 /* Returns 1 if the interface was removed */
6377 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6378                           u16 reason_code, const u8 *ie, size_t ie_len,
6379                           int locally_generated)
6380 {
6381         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6382                 return 0;
6383
6384         if (!locally_generated)
6385                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6386                                  ie_len);
6387
6388         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
6389             wpa_s->current_ssid &&
6390             wpa_s->current_ssid->p2p_group &&
6391             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
6392                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
6393                            "session is ending");
6394                 if (wpas_p2p_group_delete(wpa_s,
6395                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
6396                     > 0)
6397                         return 1;
6398         }
6399
6400         return 0;
6401 }
6402
6403
6404 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6405                              u16 reason_code, const u8 *ie, size_t ie_len,
6406                              int locally_generated)
6407 {
6408         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6409                 return;
6410
6411         if (!locally_generated)
6412                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6413                                    ie_len);
6414 }
6415
6416
6417 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
6418 {
6419         struct p2p_data *p2p = wpa_s->global->p2p;
6420
6421         if (p2p == NULL)
6422                 return;
6423
6424         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
6425                 return;
6426
6427         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
6428                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
6429
6430         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
6431                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
6432
6433         if (wpa_s->wps &&
6434             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
6435                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
6436
6437         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
6438                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
6439
6440         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
6441                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
6442                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
6443                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
6444                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
6445         }
6446
6447         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
6448                 p2p_set_sec_dev_types(p2p,
6449                                       (void *) wpa_s->conf->sec_device_type,
6450                                       wpa_s->conf->num_sec_device_types);
6451
6452         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
6453                 int i;
6454                 p2p_remove_wps_vendor_extensions(p2p);
6455                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
6456                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
6457                                 continue;
6458                         p2p_add_wps_vendor_extension(
6459                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
6460                 }
6461         }
6462
6463         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
6464             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
6465                 char country[3];
6466                 country[0] = wpa_s->conf->country[0];
6467                 country[1] = wpa_s->conf->country[1];
6468                 country[2] = 0x04;
6469                 p2p_set_country(p2p, country);
6470         }
6471
6472         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
6473                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
6474                                      wpa_s->conf->p2p_ssid_postfix ?
6475                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
6476                                      0);
6477         }
6478
6479         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
6480                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
6481
6482         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
6483                 u8 reg_class, channel;
6484                 int ret;
6485                 unsigned int r;
6486                 u8 channel_forced;
6487
6488                 if (wpa_s->conf->p2p_listen_reg_class &&
6489                     wpa_s->conf->p2p_listen_channel) {
6490                         reg_class = wpa_s->conf->p2p_listen_reg_class;
6491                         channel = wpa_s->conf->p2p_listen_channel;
6492                         channel_forced = 1;
6493                 } else {
6494                         reg_class = 81;
6495                         /*
6496                          * Pick one of the social channels randomly as the
6497                          * listen channel.
6498                          */
6499                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
6500                                 channel = 1;
6501                         else
6502                                 channel = 1 + (r % 3) * 5;
6503                         channel_forced = 0;
6504                 }
6505                 ret = p2p_set_listen_channel(p2p, reg_class, channel,
6506                                              channel_forced);
6507                 if (ret)
6508                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
6509                                    "failed: %d", ret);
6510         }
6511         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
6512                 u8 op_reg_class, op_channel, cfg_op_channel;
6513                 int ret = 0;
6514                 unsigned int r;
6515                 if (wpa_s->conf->p2p_oper_reg_class &&
6516                     wpa_s->conf->p2p_oper_channel) {
6517                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
6518                         op_channel = wpa_s->conf->p2p_oper_channel;
6519                         cfg_op_channel = 1;
6520                 } else {
6521                         op_reg_class = 81;
6522                         /*
6523                          * Use random operation channel from (1, 6, 11)
6524                          *if no other preference is indicated.
6525                          */
6526                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
6527                                 op_channel = 1;
6528                         else
6529                                 op_channel = 1 + (r % 3) * 5;
6530                         cfg_op_channel = 0;
6531                 }
6532                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
6533                                            cfg_op_channel);
6534                 if (ret)
6535                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
6536                                    "failed: %d", ret);
6537         }
6538
6539         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
6540                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
6541                                       wpa_s->conf->p2p_pref_chan) < 0) {
6542                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
6543                                    "update failed");
6544                 }
6545
6546                 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
6547                         wpa_printf(MSG_ERROR, "P2P: No GO channel list "
6548                                    "update failed");
6549                 }
6550         }
6551
6552         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN)
6553                 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len);
6554 }
6555
6556
6557 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
6558                      int duration)
6559 {
6560         if (!wpa_s->ap_iface)
6561                 return -1;
6562         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
6563                                    duration);
6564 }
6565
6566
6567 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
6568 {
6569         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6570                 return -1;
6571
6572         wpa_s->global->cross_connection = enabled;
6573         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
6574
6575         if (!enabled) {
6576                 struct wpa_supplicant *iface;
6577
6578                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
6579                 {
6580                         if (iface->cross_connect_enabled == 0)
6581                                 continue;
6582
6583                         iface->cross_connect_enabled = 0;
6584                         iface->cross_connect_in_use = 0;
6585                         wpa_msg_global(iface->parent, MSG_INFO,
6586                                        P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6587                                        iface->ifname,
6588                                        iface->cross_connect_uplink);
6589                 }
6590         }
6591
6592         return 0;
6593 }
6594
6595
6596 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
6597 {
6598         struct wpa_supplicant *iface;
6599
6600         if (!uplink->global->cross_connection)
6601                 return;
6602
6603         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
6604                 if (!iface->cross_connect_enabled)
6605                         continue;
6606                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
6607                     0)
6608                         continue;
6609                 if (iface->ap_iface == NULL)
6610                         continue;
6611                 if (iface->cross_connect_in_use)
6612                         continue;
6613
6614                 iface->cross_connect_in_use = 1;
6615                 wpa_msg_global(iface->parent, MSG_INFO,
6616                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
6617                                iface->ifname, iface->cross_connect_uplink);
6618         }
6619 }
6620
6621
6622 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
6623 {
6624         struct wpa_supplicant *iface;
6625
6626         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
6627                 if (!iface->cross_connect_enabled)
6628                         continue;
6629                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
6630                     0)
6631                         continue;
6632                 if (!iface->cross_connect_in_use)
6633                         continue;
6634
6635                 wpa_msg_global(iface->parent, MSG_INFO,
6636                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6637                                iface->ifname, iface->cross_connect_uplink);
6638                 iface->cross_connect_in_use = 0;
6639         }
6640 }
6641
6642
6643 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
6644 {
6645         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
6646             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
6647             wpa_s->cross_connect_disallowed)
6648                 wpas_p2p_disable_cross_connect(wpa_s);
6649         else
6650                 wpas_p2p_enable_cross_connect(wpa_s);
6651         if (!wpa_s->ap_iface &&
6652             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6653                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6654 }
6655
6656
6657 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
6658 {
6659         wpas_p2p_disable_cross_connect(wpa_s);
6660         if (!wpa_s->ap_iface &&
6661             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
6662                                          wpa_s, NULL))
6663                 wpas_p2p_set_group_idle_timeout(wpa_s);
6664 }
6665
6666
6667 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
6668 {
6669         struct wpa_supplicant *iface;
6670
6671         if (!wpa_s->global->cross_connection)
6672                 return;
6673
6674         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
6675                 if (iface == wpa_s)
6676                         continue;
6677                 if (iface->drv_flags &
6678                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
6679                         continue;
6680                 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) &&
6681                     iface != wpa_s->parent)
6682                         continue;
6683
6684                 wpa_s->cross_connect_enabled = 1;
6685                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
6686                            sizeof(wpa_s->cross_connect_uplink));
6687                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
6688                            "%s to %s whenever uplink is available",
6689                            wpa_s->ifname, wpa_s->cross_connect_uplink);
6690
6691                 if (iface->ap_iface || iface->current_ssid == NULL ||
6692                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
6693                     iface->cross_connect_disallowed ||
6694                     iface->wpa_state != WPA_COMPLETED)
6695                         break;
6696
6697                 wpa_s->cross_connect_in_use = 1;
6698                 wpa_msg_global(wpa_s->parent, MSG_INFO,
6699                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
6700                                wpa_s->ifname, wpa_s->cross_connect_uplink);
6701                 break;
6702         }
6703 }
6704
6705
6706 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
6707 {
6708         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
6709             !wpa_s->p2p_in_provisioning)
6710                 return 0; /* not P2P client operation */
6711
6712         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
6713                    "session overlap");
6714         if (wpa_s != wpa_s->parent)
6715                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
6716         wpas_p2p_group_formation_failed(wpa_s);
6717         return 1;
6718 }
6719
6720
6721 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
6722 {
6723         struct wpa_supplicant *wpa_s = eloop_ctx;
6724         wpas_p2p_notif_pbc_overlap(wpa_s);
6725 }
6726
6727
6728 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
6729 {
6730         struct p2p_channels chan, cli_chan;
6731         struct wpa_supplicant *ifs;
6732
6733         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
6734                 return;
6735
6736         os_memset(&chan, 0, sizeof(chan));
6737         os_memset(&cli_chan, 0, sizeof(cli_chan));
6738         if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
6739                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
6740                            "channel list");
6741                 return;
6742         }
6743
6744         p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
6745
6746         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
6747                 int freq;
6748                 if (!ifs->current_ssid ||
6749                     !ifs->current_ssid->p2p_group ||
6750                     (ifs->current_ssid->mode != WPAS_MODE_P2P_GO &&
6751                      ifs->current_ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION))
6752                                 continue;
6753                 freq = ifs->current_ssid->frequency;
6754                 if (freq_included(&chan, freq)) {
6755                         wpa_dbg(ifs, MSG_DEBUG,
6756                                 "P2P GO operating frequency %d MHz in valid range",
6757                                 freq);
6758                         continue;
6759                 }
6760
6761                 wpa_dbg(ifs, MSG_DEBUG,
6762                         "P2P GO operating in invalid frequency %d MHz", freq);
6763                 /* TODO: Consider using CSA or removing the group within
6764                  * wpa_supplicant */
6765                 wpa_msg(ifs, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
6766         }
6767 }
6768
6769
6770 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
6771                                      struct wpa_scan_results *scan_res)
6772 {
6773         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6774 }
6775
6776
6777 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
6778 {
6779         struct wpa_global *global = wpa_s->global;
6780         int found = 0;
6781         const u8 *peer;
6782
6783         if (global->p2p == NULL)
6784                 return -1;
6785
6786         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
6787
6788         if (wpa_s->pending_interface_name[0] &&
6789             !is_zero_ether_addr(wpa_s->pending_interface_addr))
6790                 found = 1;
6791
6792         peer = p2p_get_go_neg_peer(global->p2p);
6793         if (peer) {
6794                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
6795                            MACSTR, MAC2STR(peer));
6796                 p2p_unauthorize(global->p2p, peer);
6797                 found = 1;
6798         }
6799
6800         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
6801                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
6802                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
6803                 found = 1;
6804         }
6805
6806         if (wpa_s->pending_pd_before_join) {
6807                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
6808                 wpa_s->pending_pd_before_join = 0;
6809                 found = 1;
6810         }
6811
6812         wpas_p2p_stop_find(wpa_s);
6813
6814         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6815                 if (wpa_s == global->p2p_group_formation &&
6816                     (wpa_s->p2p_in_provisioning ||
6817                      wpa_s->parent->pending_interface_type ==
6818                      WPA_IF_P2P_CLIENT)) {
6819                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
6820                                    "formation found - cancelling",
6821                                    wpa_s->ifname);
6822                         found = 1;
6823                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6824                                              wpa_s->parent, NULL);
6825                         if (wpa_s->p2p_in_provisioning) {
6826                                 wpas_group_formation_completed(wpa_s, 0);
6827                                 break;
6828                         }
6829                         wpas_p2p_group_delete(wpa_s,
6830                                               P2P_GROUP_REMOVAL_REQUESTED);
6831                         break;
6832                 } else if (wpa_s->p2p_in_invitation) {
6833                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
6834                                    wpa_s->ifname);
6835                         found = 1;
6836                         wpas_p2p_group_formation_failed(wpa_s);
6837                 }
6838         }
6839
6840         if (!found) {
6841                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
6842                 return -1;
6843         }
6844
6845         return 0;
6846 }
6847
6848
6849 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
6850 {
6851         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6852                 return;
6853
6854         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
6855                    "being available anymore");
6856         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
6857 }
6858
6859
6860 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
6861                                    int freq_24, int freq_5, int freq_overall)
6862 {
6863         struct p2p_data *p2p = wpa_s->global->p2p;
6864         if (p2p == NULL)
6865                 return;
6866         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
6867 }
6868
6869
6870 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
6871 {
6872         u8 peer[ETH_ALEN];
6873         struct p2p_data *p2p = wpa_s->global->p2p;
6874
6875         if (p2p == NULL)
6876                 return -1;
6877
6878         if (hwaddr_aton(addr, peer))
6879                 return -1;
6880
6881         return p2p_unauthorize(p2p, peer);
6882 }
6883
6884
6885 /**
6886  * wpas_p2p_disconnect - Disconnect from a P2P Group
6887  * @wpa_s: Pointer to wpa_supplicant data
6888  * Returns: 0 on success, -1 on failure
6889  *
6890  * This can be used to disconnect from a group in which the local end is a P2P
6891  * Client or to end a P2P Group in case the local end is the Group Owner. If a
6892  * virtual network interface was created for this group, that interface will be
6893  * removed. Otherwise, only the configured P2P group network will be removed
6894  * from the interface.
6895  */
6896 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
6897 {
6898
6899         if (wpa_s == NULL)
6900                 return -1;
6901
6902         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
6903                 -1 : 0;
6904 }
6905
6906
6907 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
6908 {
6909         int ret;
6910
6911         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6912                 return 0;
6913
6914         ret = p2p_in_progress(wpa_s->global->p2p);
6915         if (ret == 0) {
6916                 /*
6917                  * Check whether there is an ongoing WPS provisioning step (or
6918                  * other parts of group formation) on another interface since
6919                  * p2p_in_progress() does not report this to avoid issues for
6920                  * scans during such provisioning step.
6921                  */
6922                 if (wpa_s->global->p2p_group_formation &&
6923                     wpa_s->global->p2p_group_formation != wpa_s) {
6924                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
6925                                 "in group formation",
6926                                 wpa_s->global->p2p_group_formation->ifname);
6927                         ret = 1;
6928                 }
6929         }
6930
6931         if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
6932                 struct os_reltime now;
6933                 os_get_reltime(&now);
6934                 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
6935                                        P2P_MAX_INITIAL_CONN_WAIT_GO)) {
6936                         /* Wait for the first client has expired */
6937                         wpa_s->global->p2p_go_wait_client.sec = 0;
6938                 } else {
6939                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
6940                         ret = 1;
6941                 }
6942         }
6943
6944         return ret;
6945 }
6946
6947
6948 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
6949                               struct wpa_ssid *ssid)
6950 {
6951         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
6952             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6953                                  wpa_s->parent, NULL) > 0) {
6954                 /**
6955                  * Remove the network by scheduling the group formation
6956                  * timeout to happen immediately. The teardown code
6957                  * needs to be scheduled to run asynch later so that we
6958                  * don't delete data from under ourselves unexpectedly.
6959                  * Calling wpas_p2p_group_formation_timeout directly
6960                  * causes a series of crashes in WPS failure scenarios.
6961                  */
6962                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
6963                            "P2P group network getting removed");
6964                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
6965                                        wpa_s->parent, NULL);
6966         }
6967 }
6968
6969
6970 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
6971                                           const u8 *addr, const u8 *ssid,
6972                                           size_t ssid_len)
6973 {
6974         struct wpa_ssid *s;
6975         size_t i;
6976
6977         for (s = wpa_s->conf->ssid; s; s = s->next) {
6978                 if (s->disabled != 2)
6979                         continue;
6980                 if (ssid &&
6981                     (ssid_len != s->ssid_len ||
6982                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
6983                         continue;
6984                 if (addr == NULL) {
6985                         if (s->mode == WPAS_MODE_P2P_GO)
6986                                 return s;
6987                         continue;
6988                 }
6989                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
6990                         return s; /* peer is GO in the persistent group */
6991                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
6992                         continue;
6993                 for (i = 0; i < s->num_p2p_clients; i++) {
6994                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
6995                                       addr, ETH_ALEN) == 0)
6996                                 return s; /* peer is P2P client in persistent
6997                                            * group */
6998                 }
6999         }
7000
7001         return NULL;
7002 }
7003
7004
7005 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
7006                                        const u8 *addr)
7007 {
7008         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7009                                  wpa_s->parent, NULL) > 0) {
7010                 /*
7011                  * This can happen if WPS provisioning step is not terminated
7012                  * cleanly (e.g., P2P Client does not send WSC_Done). Since the
7013                  * peer was able to connect, there is no need to time out group
7014                  * formation after this, though. In addition, this is used with
7015                  * the initial connection wait on the GO as a separate formation
7016                  * timeout and as such, expected to be hit after the initial WPS
7017                  * provisioning step.
7018                  */
7019                 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
7020
7021                 if (!wpa_s->p2p_go_group_formation_completed &&
7022                     !wpa_s->group_formation_reported) {
7023                         /*
7024                          * GO has not yet notified group formation success since
7025                          * the WPS step was not completed cleanly. Do that
7026                          * notification now since the P2P Client was able to
7027                          * connect and as such, must have received the
7028                          * credential from the WPS step.
7029                          */
7030                         if (wpa_s->global->p2p)
7031                                 p2p_wps_success_cb(wpa_s->global->p2p, addr);
7032                         wpas_group_formation_completed(wpa_s, 1);
7033                 }
7034         }
7035         if (!wpa_s->p2p_go_group_formation_completed) {
7036                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
7037                 wpa_s->p2p_go_group_formation_completed = 1;
7038                 wpa_s->global->p2p_group_formation = NULL;
7039                 wpa_s->p2p_in_provisioning = 0;
7040                 wpa_s->p2p_in_invitation = 0;
7041         }
7042         wpa_s->global->p2p_go_wait_client.sec = 0;
7043         if (addr == NULL)
7044                 return;
7045         wpas_p2p_add_persistent_group_client(wpa_s, addr);
7046 }
7047
7048
7049 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
7050                                        int group_added)
7051 {
7052         struct wpa_supplicant *group = wpa_s;
7053         int ret = 0;
7054
7055         if (wpa_s->global->p2p_group_formation)
7056                 group = wpa_s->global->p2p_group_formation;
7057         wpa_s = wpa_s->parent;
7058         offchannel_send_action_done(wpa_s);
7059         if (group_added)
7060                 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
7061         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
7062         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
7063                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
7064                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
7065                          wpa_s->p2p_persistent_id,
7066                          wpa_s->p2p_pd_before_go_neg,
7067                          wpa_s->p2p_go_ht40,
7068                          wpa_s->p2p_go_vht);
7069         return ret;
7070 }
7071
7072
7073 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
7074 {
7075         int res;
7076
7077         if (!wpa_s->p2p_fallback_to_go_neg ||
7078             wpa_s->p2p_in_provisioning <= 5)
7079                 return 0;
7080
7081         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
7082                 return 0; /* peer operating as a GO */
7083
7084         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
7085                 "fallback to GO Negotiation");
7086         wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG
7087                        "reason=GO-not-found");
7088         res = wpas_p2p_fallback_to_go_neg(wpa_s, 1);
7089
7090         return res == 1 ? 2 : 1;
7091 }
7092
7093
7094 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
7095 {
7096         struct wpa_supplicant *ifs;
7097
7098         if (wpa_s->wpa_state > WPA_SCANNING) {
7099                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
7100                         "concurrent operation",
7101                         wpa_s->conf->p2p_search_delay);
7102                 return wpa_s->conf->p2p_search_delay;
7103         }
7104
7105         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
7106                          radio_list) {
7107                 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
7108                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
7109                                 "delay due to concurrent operation on "
7110                                 "interface %s",
7111                                 wpa_s->conf->p2p_search_delay,
7112                                 ifs->ifname);
7113                         return wpa_s->conf->p2p_search_delay;
7114                 }
7115         }
7116
7117         return 0;
7118 }
7119
7120
7121 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
7122                                      struct wpa_ssid *s, const u8 *addr,
7123                                      int iface_addr)
7124 {
7125         struct psk_list_entry *psk, *tmp;
7126         int changed = 0;
7127
7128         dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
7129                               list) {
7130                 if ((iface_addr && !psk->p2p &&
7131                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
7132                     (!iface_addr && psk->p2p &&
7133                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
7134                         wpa_dbg(wpa_s, MSG_DEBUG,
7135                                 "P2P: Remove persistent group PSK list entry for "
7136                                 MACSTR " p2p=%u",
7137                                 MAC2STR(psk->addr), psk->p2p);
7138                         dl_list_del(&psk->list);
7139                         os_free(psk);
7140                         changed++;
7141                 }
7142         }
7143
7144         return changed;
7145 }
7146
7147
7148 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
7149                          const u8 *p2p_dev_addr,
7150                          const u8 *psk, size_t psk_len)
7151 {
7152         struct wpa_ssid *ssid = wpa_s->current_ssid;
7153         struct wpa_ssid *persistent;
7154         struct psk_list_entry *p, *last;
7155
7156         if (psk_len != sizeof(p->psk))
7157                 return;
7158
7159         if (p2p_dev_addr) {
7160                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
7161                         " p2p_dev_addr=" MACSTR,
7162                         MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
7163                 if (is_zero_ether_addr(p2p_dev_addr))
7164                         p2p_dev_addr = NULL;
7165         } else {
7166                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
7167                         MAC2STR(mac_addr));
7168         }
7169
7170         if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
7171                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
7172                 /* To be added to persistent group once created */
7173                 if (wpa_s->global->add_psk == NULL) {
7174                         wpa_s->global->add_psk = os_zalloc(sizeof(*p));
7175                         if (wpa_s->global->add_psk == NULL)
7176                                 return;
7177                 }
7178                 p = wpa_s->global->add_psk;
7179                 if (p2p_dev_addr) {
7180                         p->p2p = 1;
7181                         os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7182                 } else {
7183                         p->p2p = 0;
7184                         os_memcpy(p->addr, mac_addr, ETH_ALEN);
7185                 }
7186                 os_memcpy(p->psk, psk, psk_len);
7187                 return;
7188         }
7189
7190         if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
7191                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
7192                 return;
7193         }
7194
7195         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
7196                                              ssid->ssid_len);
7197         if (!persistent) {
7198                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
7199                 return;
7200         }
7201
7202         p = os_zalloc(sizeof(*p));
7203         if (p == NULL)
7204                 return;
7205         if (p2p_dev_addr) {
7206                 p->p2p = 1;
7207                 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7208         } else {
7209                 p->p2p = 0;
7210                 os_memcpy(p->addr, mac_addr, ETH_ALEN);
7211         }
7212         os_memcpy(p->psk, psk, psk_len);
7213
7214         if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
7215             (last = dl_list_last(&persistent->psk_list,
7216                                  struct psk_list_entry, list))) {
7217                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
7218                         MACSTR " (p2p=%u) to make room for a new one",
7219                         MAC2STR(last->addr), last->p2p);
7220                 dl_list_del(&last->list);
7221                 os_free(last);
7222         }
7223
7224         wpas_p2p_remove_psk_entry(wpa_s->parent, persistent,
7225                                   p2p_dev_addr ? p2p_dev_addr : mac_addr,
7226                                   p2p_dev_addr == NULL);
7227         if (p2p_dev_addr) {
7228                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
7229                         MACSTR, MAC2STR(p2p_dev_addr));
7230         } else {
7231                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
7232                         MAC2STR(mac_addr));
7233         }
7234         dl_list_add(&persistent->psk_list, &p->list);
7235
7236         if (wpa_s->parent->conf->update_config &&
7237             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
7238                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
7239 }
7240
7241
7242 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
7243                                 struct wpa_ssid *s, const u8 *addr,
7244                                 int iface_addr)
7245 {
7246         int res;
7247
7248         res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
7249         if (res > 0 && wpa_s->conf->update_config &&
7250             wpa_config_write(wpa_s->confname, wpa_s->conf))
7251                 wpa_dbg(wpa_s, MSG_DEBUG,
7252                         "P2P: Failed to update configuration");
7253 }
7254
7255
7256 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
7257                                       const u8 *peer, int iface_addr)
7258 {
7259         struct hostapd_data *hapd;
7260         struct hostapd_wpa_psk *psk, *prev, *rem;
7261         struct sta_info *sta;
7262
7263         if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
7264             wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
7265                 return;
7266
7267         /* Remove per-station PSK entry */
7268         hapd = wpa_s->ap_iface->bss[0];
7269         prev = NULL;
7270         psk = hapd->conf->ssid.wpa_psk;
7271         while (psk) {
7272                 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
7273                     (!iface_addr &&
7274                      os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
7275                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
7276                                 MACSTR " iface_addr=%d",
7277                                 MAC2STR(peer), iface_addr);
7278                         if (prev)
7279                                 prev->next = psk->next;
7280                         else
7281                                 hapd->conf->ssid.wpa_psk = psk->next;
7282                         rem = psk;
7283                         psk = psk->next;
7284                         os_free(rem);
7285                 } else {
7286                         prev = psk;
7287                         psk = psk->next;
7288                 }
7289         }
7290
7291         /* Disconnect from group */
7292         if (iface_addr)
7293                 sta = ap_get_sta(hapd, peer);
7294         else
7295                 sta = ap_get_sta_p2p(hapd, peer);
7296         if (sta) {
7297                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
7298                         " (iface_addr=%d) from group",
7299                         MAC2STR(peer), iface_addr);
7300                 hostapd_drv_sta_deauth(hapd, sta->addr,
7301                                        WLAN_REASON_DEAUTH_LEAVING);
7302                 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
7303         }
7304 }
7305
7306
7307 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
7308                             int iface_addr)
7309 {
7310         struct wpa_ssid *s;
7311         struct wpa_supplicant *w;
7312
7313         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
7314
7315         /* Remove from any persistent group */
7316         for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
7317                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
7318                         continue;
7319                 if (!iface_addr)
7320                         wpas_remove_persistent_peer(wpa_s, s, peer, 0);
7321                 wpas_p2p_remove_psk(wpa_s->parent, s, peer, iface_addr);
7322         }
7323
7324         /* Remove from any operating group */
7325         for (w = wpa_s->global->ifaces; w; w = w->next)
7326                 wpas_p2p_remove_client_go(w, peer, iface_addr);
7327 }
7328
7329
7330 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
7331 {
7332         struct wpa_supplicant *wpa_s = eloop_ctx;
7333         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
7334 }
7335
7336
7337 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
7338 {
7339         struct wpa_supplicant *wpa_s = eloop_ctx;
7340
7341         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
7342         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
7343 }
7344
7345
7346 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
7347                                         struct wpa_ssid *ssid)
7348 {
7349         struct wpa_supplicant *iface;
7350
7351         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7352                 if (!iface->current_ssid ||
7353                     iface->current_ssid->frequency == freq ||
7354                     (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
7355                      !iface->current_ssid->p2p_group))
7356                         continue;
7357
7358                 /* Remove the connection with least priority */
7359                 if (!wpas_is_p2p_prioritized(iface)) {
7360                         /* STA connection has priority over existing
7361                          * P2P connection, so remove the interface. */
7362                         wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
7363                         eloop_register_timeout(0, 0,
7364                                                wpas_p2p_group_freq_conflict,
7365                                                iface, NULL);
7366                         /* If connection in progress is P2P connection, do not
7367                          * proceed for the connection. */
7368                         if (wpa_s == iface)
7369                                 return -1;
7370                         else
7371                                 return 0;
7372                 } else {
7373                         /* P2P connection has priority, disable the STA network
7374                          */
7375                         wpa_supplicant_disable_network(wpa_s->global->ifaces,
7376                                                        ssid);
7377                         wpa_msg(wpa_s->global->ifaces, MSG_INFO,
7378                                 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
7379                         os_memset(wpa_s->global->ifaces->pending_bssid, 0,
7380                                   ETH_ALEN);
7381                         /* If P2P connection is in progress, continue
7382                          * connecting...*/
7383                         if (wpa_s == iface)
7384                                 return 0;
7385                         else
7386                                 return -1;
7387                 }
7388         }
7389
7390         return 0;
7391 }
7392
7393
7394 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
7395 {
7396         struct wpa_ssid *ssid = wpa_s->current_ssid;
7397
7398         if (ssid == NULL || !ssid->p2p_group)
7399                 return 0;
7400
7401         if (wpa_s->p2p_last_4way_hs_fail &&
7402             wpa_s->p2p_last_4way_hs_fail == ssid) {
7403                 u8 go_dev_addr[ETH_ALEN];
7404                 struct wpa_ssid *persistent;
7405
7406                 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
7407                                               ssid->ssid,
7408                                               ssid->ssid_len) <= 0) {
7409                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
7410                         goto disconnect;
7411                 }
7412
7413                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
7414                         MACSTR, MAC2STR(go_dev_addr));
7415                 persistent = wpas_p2p_get_persistent(wpa_s->parent, go_dev_addr,
7416                                                      ssid->ssid,
7417                                                      ssid->ssid_len);
7418                 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
7419                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
7420                         goto disconnect;
7421                 }
7422                 wpa_msg_global(wpa_s->parent, MSG_INFO,
7423                                P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
7424                                persistent->id);
7425         disconnect:
7426                 wpa_s->p2p_last_4way_hs_fail = NULL;
7427                 /*
7428                  * Remove the group from a timeout to avoid issues with caller
7429                  * continuing to use the interface if this is on a P2P group
7430                  * interface.
7431                  */
7432                 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
7433                                        wpa_s, NULL);
7434                 return 1;
7435         }
7436
7437         wpa_s->p2p_last_4way_hs_fail = ssid;
7438         return 0;
7439 }
7440
7441
7442 #ifdef CONFIG_WPS_NFC
7443
7444 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
7445                                              struct wpabuf *p2p)
7446 {
7447         struct wpabuf *ret;
7448         size_t wsc_len;
7449
7450         if (p2p == NULL) {
7451                 wpabuf_free(wsc);
7452                 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
7453                 return NULL;
7454         }
7455
7456         wsc_len = wsc ? wpabuf_len(wsc) : 0;
7457         ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
7458         if (ret == NULL) {
7459                 wpabuf_free(wsc);
7460                 wpabuf_free(p2p);
7461                 return NULL;
7462         }
7463
7464         wpabuf_put_be16(ret, wsc_len);
7465         if (wsc)
7466                 wpabuf_put_buf(ret, wsc);
7467         wpabuf_put_be16(ret, wpabuf_len(p2p));
7468         wpabuf_put_buf(ret, p2p);
7469
7470         wpabuf_free(wsc);
7471         wpabuf_free(p2p);
7472         wpa_hexdump_buf(MSG_DEBUG,
7473                         "P2P: Generated NFC connection handover message", ret);
7474
7475         if (ndef && ret) {
7476                 struct wpabuf *tmp;
7477                 tmp = ndef_build_p2p(ret);
7478                 wpabuf_free(ret);
7479                 if (tmp == NULL) {
7480                         wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
7481                         return NULL;
7482                 }
7483                 ret = tmp;
7484         }
7485
7486         return ret;
7487 }
7488
7489
7490 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
7491                              struct wpa_ssid **ssid, u8 *go_dev_addr)
7492 {
7493         struct wpa_supplicant *iface;
7494
7495         if (go_dev_addr)
7496                 os_memset(go_dev_addr, 0, ETH_ALEN);
7497         if (ssid)
7498                 *ssid = NULL;
7499         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7500                 if (iface->wpa_state < WPA_ASSOCIATING ||
7501                     iface->current_ssid == NULL || iface->assoc_freq == 0 ||
7502                     !iface->current_ssid->p2p_group ||
7503                     iface->current_ssid->mode != WPAS_MODE_INFRA)
7504                         continue;
7505                 if (ssid)
7506                         *ssid = iface->current_ssid;
7507                 if (go_dev_addr)
7508                         os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
7509                 return iface->assoc_freq;
7510         }
7511         return 0;
7512 }
7513
7514
7515 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
7516                                           int ndef)
7517 {
7518         struct wpabuf *wsc, *p2p;
7519         struct wpa_ssid *ssid;
7520         u8 go_dev_addr[ETH_ALEN];
7521         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
7522
7523         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
7524                 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
7525                 return NULL;
7526         }
7527
7528         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7529             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7530                            &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
7531                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
7532                 return NULL;
7533         }
7534
7535         if (cli_freq == 0) {
7536                 wsc = wps_build_nfc_handover_req_p2p(
7537                         wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
7538         } else
7539                 wsc = NULL;
7540         p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
7541                                          go_dev_addr, ssid ? ssid->ssid : NULL,
7542                                          ssid ? ssid->ssid_len : 0);
7543
7544         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7545 }
7546
7547
7548 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
7549                                           int ndef, int tag)
7550 {
7551         struct wpabuf *wsc, *p2p;
7552         struct wpa_ssid *ssid;
7553         u8 go_dev_addr[ETH_ALEN];
7554         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
7555
7556         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7557                 return NULL;
7558
7559         if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7560             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7561                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
7562                 return NULL;
7563
7564         if (cli_freq == 0) {
7565                 wsc = wps_build_nfc_handover_sel_p2p(
7566                         wpa_s->parent->wps,
7567                         tag ? wpa_s->conf->wps_nfc_dev_pw_id :
7568                         DEV_PW_NFC_CONNECTION_HANDOVER,
7569                         wpa_s->conf->wps_nfc_dh_pubkey,
7570                         tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
7571         } else
7572                 wsc = NULL;
7573         p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
7574                                          go_dev_addr, ssid ? ssid->ssid : NULL,
7575                                          ssid ? ssid->ssid_len : 0);
7576
7577         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7578 }
7579
7580
7581 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
7582                                    struct p2p_nfc_params *params)
7583 {
7584         wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
7585                    "connection handover (freq=%d)",
7586                    params->go_freq);
7587
7588         if (params->go_freq && params->go_ssid_len) {
7589                 wpa_s->p2p_wps_method = WPS_NFC;
7590                 wpa_s->pending_join_wps_method = WPS_NFC;
7591                 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
7592                 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
7593                           ETH_ALEN);
7594                 return wpas_p2p_join_start(wpa_s, params->go_freq,
7595                                            params->go_ssid,
7596                                            params->go_ssid_len);
7597         }
7598
7599         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7600                                 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
7601                                 params->go_freq, -1, 0, 1, 1);
7602 }
7603
7604
7605 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
7606                                   struct p2p_nfc_params *params, int tag)
7607 {
7608         int res, persistent;
7609         struct wpa_ssid *ssid;
7610
7611         wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
7612                    "connection handover");
7613         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7614                 ssid = wpa_s->current_ssid;
7615                 if (ssid == NULL)
7616                         continue;
7617                 if (ssid->mode != WPAS_MODE_P2P_GO)
7618                         continue;
7619                 if (wpa_s->ap_iface == NULL)
7620                         continue;
7621                 break;
7622         }
7623         if (wpa_s == NULL) {
7624                 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
7625                 return -1;
7626         }
7627
7628         if (wpa_s->parent->p2p_oob_dev_pw_id !=
7629             DEV_PW_NFC_CONNECTION_HANDOVER &&
7630             !wpa_s->parent->p2p_oob_dev_pw) {
7631                 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
7632                 return -1;
7633         }
7634         res = wpas_ap_wps_add_nfc_pw(
7635                 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
7636                 wpa_s->parent->p2p_oob_dev_pw,
7637                 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
7638                 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
7639         if (res)
7640                 return res;
7641
7642         if (!tag) {
7643                 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
7644                 return 0;
7645         }
7646
7647         if (!params->peer ||
7648             !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
7649                 return 0;
7650
7651         wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
7652                    " to join", MAC2STR(params->peer->p2p_device_addr));
7653
7654         wpa_s->global->p2p_invite_group = wpa_s;
7655         persistent = ssid->p2p_persistent_group &&
7656                 wpas_p2p_get_persistent(wpa_s->parent,
7657                                         params->peer->p2p_device_addr,
7658                                         ssid->ssid, ssid->ssid_len);
7659         wpa_s->parent->pending_invite_ssid_id = -1;
7660
7661         return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
7662                           P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
7663                           ssid->ssid, ssid->ssid_len, ssid->frequency,
7664                           wpa_s->global->p2p_dev_addr, persistent, 0,
7665                           wpa_s->parent->p2p_oob_dev_pw_id);
7666 }
7667
7668
7669 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
7670                                     struct p2p_nfc_params *params,
7671                                     int forced_freq)
7672 {
7673         wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
7674                    "connection handover");
7675         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7676                                 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
7677                                 forced_freq, -1, 0, 1, 1);
7678 }
7679
7680
7681 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
7682                                     struct p2p_nfc_params *params,
7683                                     int forced_freq)
7684 {
7685         int res;
7686
7687         wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
7688                    "connection handover");
7689         res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7690                                WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
7691                                forced_freq, -1, 0, 1, 1);
7692         if (res)
7693                 return res;
7694
7695         res = wpas_p2p_listen(wpa_s, 60);
7696         if (res) {
7697                 p2p_unauthorize(wpa_s->global->p2p,
7698                                 params->peer->p2p_device_addr);
7699         }
7700
7701         return res;
7702 }
7703
7704
7705 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
7706                                             const struct wpabuf *data,
7707                                             int sel, int tag, int forced_freq)
7708 {
7709         const u8 *pos, *end;
7710         u16 len, id;
7711         struct p2p_nfc_params params;
7712         int res;
7713
7714         os_memset(&params, 0, sizeof(params));
7715         params.sel = sel;
7716
7717         wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
7718
7719         pos = wpabuf_head(data);
7720         end = pos + wpabuf_len(data);
7721
7722         if (end - pos < 2) {
7723                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
7724                            "attributes");
7725                 return -1;
7726         }
7727         len = WPA_GET_BE16(pos);
7728         pos += 2;
7729         if (len > end - pos) {
7730                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
7731                            "attributes");
7732                 return -1;
7733         }
7734         params.wsc_attr = pos;
7735         params.wsc_len = len;
7736         pos += len;
7737
7738         if (end - pos < 2) {
7739                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
7740                            "attributes");
7741                 return -1;
7742         }
7743         len = WPA_GET_BE16(pos);
7744         pos += 2;
7745         if (len > end - pos) {
7746                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
7747                            "attributes");
7748                 return -1;
7749         }
7750         params.p2p_attr = pos;
7751         params.p2p_len = len;
7752         pos += len;
7753
7754         wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
7755                     params.wsc_attr, params.wsc_len);
7756         wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
7757                     params.p2p_attr, params.p2p_len);
7758         if (pos < end) {
7759                 wpa_hexdump(MSG_DEBUG,
7760                             "P2P: Ignored extra data after P2P attributes",
7761                             pos, end - pos);
7762         }
7763
7764         res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
7765         if (res)
7766                 return res;
7767
7768         if (params.next_step == NO_ACTION)
7769                 return 0;
7770
7771         if (params.next_step == BOTH_GO) {
7772                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
7773                         MAC2STR(params.peer->p2p_device_addr));
7774                 return 0;
7775         }
7776
7777         if (params.next_step == PEER_CLIENT) {
7778                 if (!is_zero_ether_addr(params.go_dev_addr)) {
7779                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
7780                                 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
7781                                 " ssid=\"%s\"",
7782                                 MAC2STR(params.peer->p2p_device_addr),
7783                                 params.go_freq,
7784                                 MAC2STR(params.go_dev_addr),
7785                                 wpa_ssid_txt(params.go_ssid,
7786                                              params.go_ssid_len));
7787                 } else {
7788                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
7789                                 "peer=" MACSTR " freq=%d",
7790                                 MAC2STR(params.peer->p2p_device_addr),
7791                                 params.go_freq);
7792                 }
7793                 return 0;
7794         }
7795
7796         if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
7797                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
7798                         MACSTR, MAC2STR(params.peer->p2p_device_addr));
7799                 return 0;
7800         }
7801
7802         wpabuf_free(wpa_s->p2p_oob_dev_pw);
7803         wpa_s->p2p_oob_dev_pw = NULL;
7804
7805         if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
7806                 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
7807                            "received");
7808                 return -1;
7809         }
7810
7811         id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
7812         wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
7813         wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
7814                     params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
7815         os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
7816                   params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
7817         wpa_s->p2p_peer_oob_pk_hash_known = 1;
7818
7819         if (tag) {
7820                 if (id < 0x10) {
7821                         wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
7822                                    "peer OOB Device Password Id %u", id);
7823                         return -1;
7824                 }
7825                 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
7826                            "Device Password Id %u", id);
7827                 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
7828                                 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
7829                                 params.oob_dev_pw_len -
7830                                 WPS_OOB_PUBKEY_HASH_LEN - 2);
7831                 wpa_s->p2p_oob_dev_pw_id = id;
7832                 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
7833                         params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
7834                         params.oob_dev_pw_len -
7835                         WPS_OOB_PUBKEY_HASH_LEN - 2);
7836                 if (wpa_s->p2p_oob_dev_pw == NULL)
7837                         return -1;
7838
7839                 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7840                     wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7841                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
7842                         return -1;
7843         } else {
7844                 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
7845                            "without Device Password");
7846                 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
7847         }
7848
7849         switch (params.next_step) {
7850         case NO_ACTION:
7851         case BOTH_GO:
7852         case PEER_CLIENT:
7853                 /* already covered above */
7854                 return 0;
7855         case JOIN_GROUP:
7856                 return wpas_p2p_nfc_join_group(wpa_s, &params);
7857         case AUTH_JOIN:
7858                 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
7859         case INIT_GO_NEG:
7860                 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
7861         case RESP_GO_NEG:
7862                 /* TODO: use own OOB Dev Pw */
7863                 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
7864         }
7865
7866         return -1;
7867 }
7868
7869
7870 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
7871                              const struct wpabuf *data, int forced_freq)
7872 {
7873         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7874                 return -1;
7875
7876         return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
7877 }
7878
7879
7880 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
7881                                  const struct wpabuf *req,
7882                                  const struct wpabuf *sel, int forced_freq)
7883 {
7884         struct wpabuf *tmp;
7885         int ret;
7886
7887         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7888                 return -1;
7889
7890         wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
7891
7892         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
7893                           wpabuf_head(req), wpabuf_len(req));
7894         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
7895                           wpabuf_head(sel), wpabuf_len(sel));
7896         if (forced_freq)
7897                 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
7898         tmp = ndef_parse_p2p(init ? sel : req);
7899         if (tmp == NULL) {
7900                 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
7901                 return -1;
7902         }
7903
7904         ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
7905                                                forced_freq);
7906         wpabuf_free(tmp);
7907
7908         return ret;
7909 }
7910
7911
7912 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
7913 {
7914         const u8 *if_addr;
7915         int go_intent = wpa_s->conf->p2p_go_intent;
7916         struct wpa_supplicant *iface;
7917
7918         if (wpa_s->global->p2p == NULL)
7919                 return -1;
7920
7921         if (!enabled) {
7922                 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
7923                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7924                 {
7925                         if (!iface->ap_iface)
7926                                 continue;
7927                         hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
7928                 }
7929                 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
7930                                                  0, NULL);
7931                 if (wpa_s->p2p_nfc_tag_enabled)
7932                         wpas_p2p_remove_pending_group_interface(wpa_s);
7933                 wpa_s->p2p_nfc_tag_enabled = 0;
7934                 return 0;
7935         }
7936
7937         if (wpa_s->global->p2p_disabled)
7938                 return -1;
7939
7940         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
7941             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
7942             wpa_s->conf->wps_nfc_dev_pw == NULL ||
7943             wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
7944                 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
7945                            "to allow static handover cases");
7946                 return -1;
7947         }
7948
7949         wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
7950
7951         wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
7952         wpabuf_free(wpa_s->p2p_oob_dev_pw);
7953         wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
7954         if (wpa_s->p2p_oob_dev_pw == NULL)
7955                 return -1;
7956         wpa_s->p2p_peer_oob_pk_hash_known = 0;
7957
7958         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
7959             wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
7960                 /*
7961                  * P2P Group Interface present and the command came on group
7962                  * interface, so enable the token for the current interface.
7963                  */
7964                 wpa_s->create_p2p_iface = 0;
7965         } else {
7966                 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
7967         }
7968
7969         if (wpa_s->create_p2p_iface) {
7970                 enum wpa_driver_if_type iftype;
7971                 /* Prepare to add a new interface for the group */
7972                 iftype = WPA_IF_P2P_GROUP;
7973                 if (go_intent == 15)
7974                         iftype = WPA_IF_P2P_GO;
7975                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
7976                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
7977                                    "interface for the group");
7978                         return -1;
7979                 }
7980
7981                 if_addr = wpa_s->pending_interface_addr;
7982         } else
7983                 if_addr = wpa_s->own_addr;
7984
7985         wpa_s->p2p_nfc_tag_enabled = enabled;
7986
7987         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7988                 struct hostapd_data *hapd;
7989                 if (iface->ap_iface == NULL)
7990                         continue;
7991                 hapd = iface->ap_iface->bss[0];
7992                 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
7993                 hapd->conf->wps_nfc_dh_pubkey =
7994                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
7995                 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
7996                 hapd->conf->wps_nfc_dh_privkey =
7997                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
7998                 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
7999                 hapd->conf->wps_nfc_dev_pw =
8000                         wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8001                 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8002
8003                 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
8004                         wpa_dbg(iface, MSG_DEBUG,
8005                                 "P2P: Failed to enable NFC Tag for GO");
8006                 }
8007         }
8008         p2p_set_authorized_oob_dev_pw_id(
8009                 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
8010                 if_addr);
8011
8012         return 0;
8013 }
8014
8015 #endif /* CONFIG_WPS_NFC */
8016
8017
8018 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
8019                                              struct wpa_used_freq_data *freqs,
8020                                              unsigned int num)
8021 {
8022         u8 curr_chan, cand, chan;
8023         unsigned int i;
8024
8025         curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
8026         for (i = 0, cand = 0; i < num; i++) {
8027                 ieee80211_freq_to_chan(freqs[i].freq, &chan);
8028                 if (curr_chan == chan) {
8029                         cand = 0;
8030                         break;
8031                 }
8032
8033                 if (chan == 1 || chan == 6 || chan == 11)
8034                         cand = chan;
8035         }
8036
8037         if (cand) {
8038                 wpa_dbg(wpa_s, MSG_DEBUG,
8039                         "P2P: Update Listen channel to %u based on operating channel",
8040                         cand);
8041                 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
8042         }
8043 }
8044
8045
8046 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
8047 {
8048         struct wpa_used_freq_data *freqs;
8049         unsigned int num = wpa_s->num_multichan_concurrent;
8050
8051         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8052                 return;
8053
8054         /*
8055          * If possible, optimize the Listen channel to be a channel that is
8056          * already used by one of the other interfaces.
8057          */
8058         if (!wpa_s->conf->p2p_optimize_listen_chan)
8059                 return;
8060
8061         if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
8062                 return;
8063
8064         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
8065         if (!freqs)
8066                 return;
8067
8068         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
8069
8070         wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
8071         os_free(freqs);
8072 }
8073
8074
8075 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
8076 {
8077         if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
8078                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
8079                         "the management interface is being removed");
8080                 wpas_p2p_deinit_global(wpa_s->global);
8081         }
8082 }
8083
8084
8085 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
8086 {
8087         if (wpa_s->ap_iface->bss)
8088                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
8089         wpas_p2p_group_deinit(wpa_s);
8090 }