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