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         d->p2p_cli_probe = s->p2p_cli_probe;
1878 }
1879
1880
1881 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
1882                                       char *ifname, size_t len)
1883 {
1884         char *ifname_ptr = wpa_s->ifname;
1885
1886         if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
1887                        os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
1888                 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
1889         }
1890
1891         os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
1892         if (os_strlen(ifname) >= IFNAMSIZ &&
1893             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
1894                 int res;
1895
1896                 /* Try to avoid going over the IFNAMSIZ length limit */
1897                 res = os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
1898                 if (os_snprintf_error(len, res) && len)
1899                         ifname[len - 1] = '\0';
1900         }
1901 }
1902
1903
1904 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
1905                                         enum wpa_driver_if_type type)
1906 {
1907         char ifname[120], force_ifname[120];
1908
1909         if (wpa_s->pending_interface_name[0]) {
1910                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
1911                            "- skip creation of a new one");
1912                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
1913                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
1914                                    "unknown?! ifname='%s'",
1915                                    wpa_s->pending_interface_name);
1916                         return -1;
1917                 }
1918                 return 0;
1919         }
1920
1921         wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
1922         force_ifname[0] = '\0';
1923
1924         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
1925                    ifname);
1926         wpa_s->p2p_group_idx++;
1927
1928         wpa_s->pending_interface_type = type;
1929         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
1930                            wpa_s->pending_interface_addr, NULL) < 0) {
1931                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
1932                            "interface");
1933                 return -1;
1934         }
1935
1936         if (force_ifname[0]) {
1937                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
1938                            force_ifname);
1939                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
1940                            sizeof(wpa_s->pending_interface_name));
1941         } else
1942                 os_strlcpy(wpa_s->pending_interface_name, ifname,
1943                            sizeof(wpa_s->pending_interface_name));
1944         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
1945                    MACSTR, wpa_s->pending_interface_name,
1946                    MAC2STR(wpa_s->pending_interface_addr));
1947
1948         return 0;
1949 }
1950
1951
1952 static void wpas_p2p_remove_pending_group_interface(
1953         struct wpa_supplicant *wpa_s)
1954 {
1955         if (!wpa_s->pending_interface_name[0] ||
1956             is_zero_ether_addr(wpa_s->pending_interface_addr))
1957                 return; /* No pending virtual interface */
1958
1959         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
1960                    wpa_s->pending_interface_name);
1961         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
1962                           wpa_s->pending_interface_name);
1963         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1964         wpa_s->pending_interface_name[0] = '\0';
1965         wpa_s->global->pending_group_iface_for_p2ps = 0;
1966 }
1967
1968
1969 static struct wpa_supplicant *
1970 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
1971 {
1972         struct wpa_interface iface;
1973         struct wpa_supplicant *group_wpa_s;
1974
1975         if (!wpa_s->pending_interface_name[0]) {
1976                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
1977                 if (!wpas_p2p_create_iface(wpa_s))
1978                         return NULL;
1979                 /*
1980                  * Something has forced us to remove the pending interface; try
1981                  * to create a new one and hope for the best that we will get
1982                  * the same local address.
1983                  */
1984                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
1985                                                  WPA_IF_P2P_CLIENT) < 0)
1986                         return NULL;
1987         }
1988
1989         os_memset(&iface, 0, sizeof(iface));
1990         iface.ifname = wpa_s->pending_interface_name;
1991         iface.driver = wpa_s->driver->name;
1992         if (wpa_s->conf->ctrl_interface == NULL &&
1993             wpa_s->parent != wpa_s &&
1994             wpa_s->p2p_mgmt &&
1995             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
1996                 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
1997         else
1998                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
1999         iface.driver_param = wpa_s->conf->driver_param;
2000         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
2001         if (group_wpa_s == NULL) {
2002                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
2003                            "wpa_supplicant interface");
2004                 return NULL;
2005         }
2006         wpa_s->pending_interface_name[0] = '\0';
2007         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
2008                 P2P_GROUP_INTERFACE_CLIENT;
2009         wpa_s->global->p2p_group_formation = group_wpa_s;
2010         wpa_s->global->pending_group_iface_for_p2ps = 0;
2011
2012         wpas_p2p_clone_config(group_wpa_s, wpa_s);
2013
2014         return group_wpa_s;
2015 }
2016
2017
2018 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
2019                                              void *timeout_ctx)
2020 {
2021         struct wpa_supplicant *wpa_s = eloop_ctx;
2022         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
2023         wpas_p2p_group_formation_failed(wpa_s);
2024 }
2025
2026
2027 void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s)
2028 {
2029         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2030                              wpa_s->parent, NULL);
2031         if (wpa_s->global->p2p)
2032                 p2p_group_formation_failed(wpa_s->global->p2p);
2033         wpas_group_formation_completed(wpa_s, 0);
2034 }
2035
2036
2037 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
2038 {
2039         wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
2040         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2041                              wpa_s->parent, NULL);
2042         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2043                                wpa_s->parent, NULL);
2044         wpa_s->global->p2p_fail_on_wps_complete = 0;
2045 }
2046
2047
2048 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
2049 {
2050         if (wpa_s->global->p2p_group_formation != wpa_s)
2051                 return;
2052         /* Speed up group formation timeout since this cannot succeed */
2053         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2054                              wpa_s->parent, NULL);
2055         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2056                                wpa_s->parent, NULL);
2057 }
2058
2059
2060 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
2061 {
2062         struct wpa_supplicant *wpa_s = ctx;
2063
2064         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2065                 wpa_drv_cancel_remain_on_channel(wpa_s);
2066                 wpa_s->off_channel_freq = 0;
2067                 wpa_s->roc_waiting_drv_freq = 0;
2068         }
2069
2070         if (res->status) {
2071                 wpa_msg_global(wpa_s, MSG_INFO,
2072                                P2P_EVENT_GO_NEG_FAILURE "status=%d",
2073                                res->status);
2074                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
2075                 wpas_p2p_remove_pending_group_interface(wpa_s);
2076                 return;
2077         }
2078
2079         if (wpa_s->p2p_go_ht40)
2080                 res->ht40 = 1;
2081         if (wpa_s->p2p_go_vht)
2082                 res->vht = 1;
2083
2084         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
2085                        "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
2086                        " wps_method=%s",
2087                        res->role_go ? "GO" : "client", res->freq, res->ht40,
2088                        MAC2STR(res->peer_device_addr),
2089                        MAC2STR(res->peer_interface_addr),
2090                        p2p_wps_method_text(res->wps_method));
2091         wpas_notify_p2p_go_neg_completed(wpa_s, res);
2092
2093         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
2094                 struct wpa_ssid *ssid;
2095                 ssid = wpa_config_get_network(wpa_s->conf,
2096                                               wpa_s->p2p_persistent_id);
2097                 if (ssid && ssid->disabled == 2 &&
2098                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
2099                         size_t len = os_strlen(ssid->passphrase);
2100                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
2101                                    "on requested persistent group");
2102                         os_memcpy(res->passphrase, ssid->passphrase, len);
2103                         res->passphrase[len] = '\0';
2104                 }
2105         }
2106
2107         if (wpa_s->create_p2p_iface) {
2108                 struct wpa_supplicant *group_wpa_s =
2109                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
2110                 if (group_wpa_s == NULL) {
2111                         wpas_p2p_remove_pending_group_interface(wpa_s);
2112                         eloop_cancel_timeout(wpas_p2p_long_listen_timeout,
2113                                              wpa_s, NULL);
2114                         wpas_p2p_group_formation_failed(wpa_s);
2115                         return;
2116                 }
2117                 if (group_wpa_s != wpa_s) {
2118                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
2119                                   sizeof(group_wpa_s->p2p_pin));
2120                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
2121                 }
2122                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2123                 wpa_s->pending_interface_name[0] = '\0';
2124                 group_wpa_s->p2p_in_provisioning = 1;
2125
2126                 if (res->role_go)
2127                         wpas_start_wps_go(group_wpa_s, res, 1);
2128                 else
2129                         wpas_start_wps_enrollee(group_wpa_s, res);
2130         } else {
2131                 wpa_s->p2p_in_provisioning = 1;
2132                 wpa_s->global->p2p_group_formation = wpa_s;
2133
2134                 if (res->role_go)
2135                         wpas_start_wps_go(wpa_s, res, 1);
2136                 else
2137                         wpas_start_wps_enrollee(ctx, res);
2138         }
2139
2140         wpa_s->p2p_long_listen = 0;
2141         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2142
2143         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2144         eloop_register_timeout(15 + res->peer_config_timeout / 100,
2145                                (res->peer_config_timeout % 100) * 10000,
2146                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
2147 }
2148
2149
2150 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id,
2151                                u8 go_intent)
2152 {
2153         struct wpa_supplicant *wpa_s = ctx;
2154         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
2155                        " dev_passwd_id=%u go_intent=%u", MAC2STR(src),
2156                        dev_passwd_id, go_intent);
2157
2158         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id, go_intent);
2159 }
2160
2161
2162 static void wpas_dev_found(void *ctx, const u8 *addr,
2163                            const struct p2p_peer_info *info,
2164                            int new_device)
2165 {
2166 #ifndef CONFIG_NO_STDOUT_DEBUG
2167         struct wpa_supplicant *wpa_s = ctx;
2168         char devtype[WPS_DEV_TYPE_BUFSIZE];
2169         char *wfd_dev_info_hex = NULL;
2170
2171 #ifdef CONFIG_WIFI_DISPLAY
2172         wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
2173                                                     WFD_SUBELEM_DEVICE_INFO);
2174 #endif /* CONFIG_WIFI_DISPLAY */
2175
2176         if (info->p2ps_instance) {
2177                 char str[256];
2178                 const u8 *buf = wpabuf_head(info->p2ps_instance);
2179                 size_t len = wpabuf_len(info->p2ps_instance);
2180
2181                 while (len) {
2182                         u32 id;
2183                         u16 methods;
2184                         u8 str_len;
2185
2186                         if (len < 4 + 2 + 1)
2187                                 break;
2188                         id = WPA_GET_LE32(buf);
2189                         buf += sizeof(u32);
2190                         methods = WPA_GET_BE16(buf);
2191                         buf += sizeof(u16);
2192                         str_len = *buf++;
2193                         if (str_len > len - 4 - 2 - 1)
2194                                 break;
2195                         os_memcpy(str, buf, str_len);
2196                         str[str_len] = '\0';
2197                         buf += str_len;
2198                         len -= str_len + sizeof(u32) + sizeof(u16) + sizeof(u8);
2199
2200                         wpa_msg_global(wpa_s, MSG_INFO,
2201                                        P2P_EVENT_DEVICE_FOUND MACSTR
2202                                        " p2p_dev_addr=" MACSTR
2203                                        " pri_dev_type=%s name='%s'"
2204                                        " config_methods=0x%x"
2205                                        " dev_capab=0x%x"
2206                                        " group_capab=0x%x"
2207                                        " adv_id=%x asp_svc=%s%s",
2208                                        MAC2STR(addr),
2209                                        MAC2STR(info->p2p_device_addr),
2210                                        wps_dev_type_bin2str(
2211                                                info->pri_dev_type,
2212                                                devtype, sizeof(devtype)),
2213                                        info->device_name, methods,
2214                                        info->dev_capab, info->group_capab,
2215                                        id, str,
2216                                        info->vendor_elems ?
2217                                        " vendor_elems=1" : "");
2218                 }
2219                 goto done;
2220         }
2221
2222         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
2223                        " p2p_dev_addr=" MACSTR
2224                        " pri_dev_type=%s name='%s' config_methods=0x%x "
2225                        "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d",
2226                        MAC2STR(addr), MAC2STR(info->p2p_device_addr),
2227                        wps_dev_type_bin2str(info->pri_dev_type, devtype,
2228                                             sizeof(devtype)),
2229                        info->device_name, info->config_methods,
2230                        info->dev_capab, info->group_capab,
2231                        wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
2232                        wfd_dev_info_hex ? wfd_dev_info_hex : "",
2233                        info->vendor_elems ? " vendor_elems=1" : "",
2234                        new_device);
2235
2236 done:
2237         os_free(wfd_dev_info_hex);
2238 #endif /* CONFIG_NO_STDOUT_DEBUG */
2239
2240         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
2241 }
2242
2243
2244 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
2245 {
2246         struct wpa_supplicant *wpa_s = ctx;
2247
2248         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
2249                        "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
2250
2251         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
2252 }
2253
2254
2255 static void wpas_find_stopped(void *ctx)
2256 {
2257         struct wpa_supplicant *wpa_s = ctx;
2258         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
2259         wpas_notify_p2p_find_stopped(wpa_s);
2260 }
2261
2262
2263 struct wpas_p2p_listen_work {
2264         unsigned int freq;
2265         unsigned int duration;
2266         struct wpabuf *probe_resp_ie;
2267 };
2268
2269
2270 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
2271 {
2272         if (lwork == NULL)
2273                 return;
2274         wpabuf_free(lwork->probe_resp_ie);
2275         os_free(lwork);
2276 }
2277
2278
2279 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
2280 {
2281         struct wpas_p2p_listen_work *lwork;
2282
2283         if (!wpa_s->p2p_listen_work)
2284                 return;
2285
2286         lwork = wpa_s->p2p_listen_work->ctx;
2287         wpas_p2p_listen_work_free(lwork);
2288         radio_work_done(wpa_s->p2p_listen_work);
2289         wpa_s->p2p_listen_work = NULL;
2290 }
2291
2292
2293 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
2294 {
2295         struct wpa_supplicant *wpa_s = work->wpa_s;
2296         struct wpas_p2p_listen_work *lwork = work->ctx;
2297         unsigned int duration;
2298
2299         if (deinit) {
2300                 if (work->started) {
2301                         wpa_s->p2p_listen_work = NULL;
2302                         wpas_stop_listen(wpa_s);
2303                 }
2304                 wpas_p2p_listen_work_free(lwork);
2305                 return;
2306         }
2307
2308         wpa_s->p2p_listen_work = work;
2309
2310         wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
2311
2312         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
2313                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
2314                            "report received Probe Request frames");
2315                 wpas_p2p_listen_work_done(wpa_s);
2316                 return;
2317         }
2318
2319         wpa_s->pending_listen_freq = lwork->freq;
2320         wpa_s->pending_listen_duration = lwork->duration;
2321
2322         duration = lwork->duration;
2323 #ifdef CONFIG_TESTING_OPTIONS
2324         if (wpa_s->extra_roc_dur) {
2325                 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u",
2326                            duration, duration + wpa_s->extra_roc_dur);
2327                 duration += wpa_s->extra_roc_dur;
2328         }
2329 #endif /* CONFIG_TESTING_OPTIONS */
2330
2331         if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) {
2332                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
2333                            "to remain on channel (%u MHz) for Listen "
2334                            "state", lwork->freq);
2335                 wpas_p2p_listen_work_done(wpa_s);
2336                 wpa_s->pending_listen_freq = 0;
2337                 return;
2338         }
2339         wpa_s->off_channel_freq = 0;
2340         wpa_s->roc_waiting_drv_freq = lwork->freq;
2341 }
2342
2343
2344 static int wpas_start_listen(void *ctx, unsigned int freq,
2345                              unsigned int duration,
2346                              const struct wpabuf *probe_resp_ie)
2347 {
2348         struct wpa_supplicant *wpa_s = ctx;
2349         struct wpas_p2p_listen_work *lwork;
2350
2351         if (wpa_s->p2p_listen_work) {
2352                 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
2353                 return -1;
2354         }
2355
2356         lwork = os_zalloc(sizeof(*lwork));
2357         if (lwork == NULL)
2358                 return -1;
2359         lwork->freq = freq;
2360         lwork->duration = duration;
2361         if (probe_resp_ie) {
2362                 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
2363                 if (lwork->probe_resp_ie == NULL) {
2364                         wpas_p2p_listen_work_free(lwork);
2365                         return -1;
2366                 }
2367         }
2368
2369         if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
2370                            lwork) < 0) {
2371                 wpas_p2p_listen_work_free(lwork);
2372                 return -1;
2373         }
2374
2375         return 0;
2376 }
2377
2378
2379 static void wpas_stop_listen(void *ctx)
2380 {
2381         struct wpa_supplicant *wpa_s = ctx;
2382         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2383                 wpa_drv_cancel_remain_on_channel(wpa_s);
2384                 wpa_s->off_channel_freq = 0;
2385                 wpa_s->roc_waiting_drv_freq = 0;
2386         }
2387         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
2388
2389         /*
2390          * Don't cancel Probe Request RX reporting for a connected P2P Client
2391          * handling Probe Request frames.
2392          */
2393         if (!wpa_s->p2p_cli_probe)
2394                 wpa_drv_probe_req_report(wpa_s, 0);
2395
2396         wpas_p2p_listen_work_done(wpa_s);
2397 }
2398
2399
2400 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf,
2401                                 unsigned int freq)
2402 {
2403         struct wpa_supplicant *wpa_s = ctx;
2404         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1,
2405                                  freq);
2406 }
2407
2408
2409 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2410                                          const u8 *peer, const char *params,
2411                                          unsigned int generated_pin)
2412 {
2413         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2414                        " %08d%s", MAC2STR(peer), generated_pin, params);
2415 }
2416
2417
2418 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2419                                         const u8 *peer, const char *params)
2420 {
2421         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2422                        "%s", MAC2STR(peer), params);
2423 }
2424
2425
2426 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2427                                const u8 *dev_addr, const u8 *pri_dev_type,
2428                                const char *dev_name, u16 supp_config_methods,
2429                                u8 dev_capab, u8 group_capab, const u8 *group_id,
2430                                size_t group_id_len)
2431 {
2432         struct wpa_supplicant *wpa_s = ctx;
2433         char devtype[WPS_DEV_TYPE_BUFSIZE];
2434         char params[300];
2435         u8 empty_dev_type[8];
2436         unsigned int generated_pin = 0;
2437         struct wpa_supplicant *group = NULL;
2438         int res;
2439
2440         if (group_id) {
2441                 for (group = wpa_s->global->ifaces; group; group = group->next)
2442                 {
2443                         struct wpa_ssid *s = group->current_ssid;
2444                         if (s != NULL &&
2445                             s->mode == WPAS_MODE_P2P_GO &&
2446                             group_id_len - ETH_ALEN == s->ssid_len &&
2447                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2448                                       s->ssid_len) == 0)
2449                                 break;
2450                 }
2451         }
2452
2453         if (pri_dev_type == NULL) {
2454                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2455                 pri_dev_type = empty_dev_type;
2456         }
2457         res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2458                           " pri_dev_type=%s name='%s' config_methods=0x%x "
2459                           "dev_capab=0x%x group_capab=0x%x%s%s",
2460                           MAC2STR(dev_addr),
2461                           wps_dev_type_bin2str(pri_dev_type, devtype,
2462                                                sizeof(devtype)),
2463                           dev_name, supp_config_methods, dev_capab, group_capab,
2464                           group ? " group=" : "",
2465                           group ? group->ifname : "");
2466         if (os_snprintf_error(sizeof(params), res))
2467                 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated");
2468         params[sizeof(params) - 1] = '\0';
2469
2470         if (config_methods & WPS_CONFIG_DISPLAY) {
2471                 generated_pin = wps_generate_pin();
2472                 wpas_prov_disc_local_display(wpa_s, peer, params,
2473                                              generated_pin);
2474         } else if (config_methods & WPS_CONFIG_KEYPAD)
2475                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2476         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2477                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2478                                MACSTR "%s", MAC2STR(peer), params);
2479
2480         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2481                                             P2P_PROV_DISC_SUCCESS,
2482                                             config_methods, generated_pin);
2483 }
2484
2485
2486 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2487 {
2488         struct wpa_supplicant *wpa_s = ctx;
2489         unsigned int generated_pin = 0;
2490         char params[20];
2491
2492         if (wpa_s->pending_pd_before_join &&
2493             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2494              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2495                 wpa_s->pending_pd_before_join = 0;
2496                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2497                            "join-existing-group operation");
2498                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2499                 return;
2500         }
2501
2502         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2503             wpa_s->pending_pd_use == AUTO_PD_GO_NEG) {
2504                 int res;
2505
2506                 res = os_snprintf(params, sizeof(params), " peer_go=%d",
2507                                   wpa_s->pending_pd_use == AUTO_PD_JOIN);
2508                 if (os_snprintf_error(sizeof(params), res))
2509                         params[sizeof(params) - 1] = '\0';
2510         } else
2511                 params[0] = '\0';
2512
2513         if (config_methods & WPS_CONFIG_DISPLAY)
2514                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2515         else if (config_methods & WPS_CONFIG_KEYPAD) {
2516                 generated_pin = wps_generate_pin();
2517                 wpas_prov_disc_local_display(wpa_s, peer, params,
2518                                              generated_pin);
2519         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2520                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2521                                MACSTR "%s", MAC2STR(peer), params);
2522
2523         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2524                                             P2P_PROV_DISC_SUCCESS,
2525                                             config_methods, generated_pin);
2526 }
2527
2528
2529 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2530                                 enum p2p_prov_disc_status status,
2531                                 u32 adv_id, const u8 *adv_mac,
2532                                 const char *deferred_session_resp)
2533 {
2534         struct wpa_supplicant *wpa_s = ctx;
2535
2536         if (wpa_s->p2p_fallback_to_go_neg) {
2537                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2538                         "failed - fall back to GO Negotiation");
2539                 wpa_msg_global(wpa_s->parent, MSG_INFO,
2540                                P2P_EVENT_FALLBACK_TO_GO_NEG
2541                                "reason=PD-failed");
2542                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2543                 return;
2544         }
2545
2546         if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2547                 wpa_s->pending_pd_before_join = 0;
2548                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2549                            "join-existing-group operation (no ACK for PD "
2550                            "Req attempts)");
2551                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2552                 return;
2553         }
2554
2555         if (adv_id && adv_mac && deferred_session_resp) {
2556                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2557                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x"
2558                                " deferred_session_resp='%s'",
2559                                MAC2STR(peer), status, adv_id,
2560                                deferred_session_resp);
2561         } else if (adv_id && adv_mac) {
2562                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2563                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x",
2564                                MAC2STR(peer), status, adv_id);
2565         } else {
2566                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2567                                " p2p_dev_addr=" MACSTR " status=%d",
2568                                MAC2STR(peer), status);
2569         }
2570
2571         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2572                                             status, 0, 0);
2573 }
2574
2575
2576 static int freq_included(const struct p2p_channels *channels, unsigned int freq)
2577 {
2578         if (channels == NULL)
2579                 return 1; /* Assume no restrictions */
2580         return p2p_channels_includes_freq(channels, freq);
2581
2582 }
2583
2584
2585 /**
2586  * Pick the best frequency to use from all the currently used frequencies.
2587  */
2588 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s,
2589                                         struct wpa_used_freq_data *freqs,
2590                                         unsigned int num)
2591 {
2592         unsigned int i, c;
2593
2594         /* find a candidate freq that is supported by P2P */
2595         for (c = 0; c < num; c++)
2596                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq))
2597                         break;
2598
2599         if (c == num)
2600                 return 0;
2601
2602         /* once we have a candidate, try to find a 'better' one */
2603         for (i = c + 1; i < num; i++) {
2604                 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
2605                         continue;
2606
2607                 /*
2608                  * 1. Infrastructure station interfaces have higher preference.
2609                  * 2. P2P Clients have higher preference.
2610                  * 3. All others.
2611                  */
2612                 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) {
2613                         c = i;
2614                         break;
2615                 }
2616
2617                 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT))
2618                         c = i;
2619         }
2620         return freqs[c].freq;
2621 }
2622
2623
2624 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2625                                   const u8 *go_dev_addr, const u8 *ssid,
2626                                   size_t ssid_len, int *go, u8 *group_bssid,
2627                                   int *force_freq, int persistent_group,
2628                                   const struct p2p_channels *channels,
2629                                   int dev_pw_id)
2630 {
2631         struct wpa_supplicant *wpa_s = ctx;
2632         struct wpa_ssid *s;
2633         struct wpa_used_freq_data *freqs;
2634         struct wpa_supplicant *grp;
2635         int best_freq;
2636
2637         if (!persistent_group) {
2638                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2639                            " to join an active group (SSID: %s)",
2640                            MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2641                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2642                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2643                      == 0 ||
2644                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2645                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2646                                    "authorized invitation");
2647                         goto accept_inv;
2648                 }
2649
2650 #ifdef CONFIG_WPS_NFC
2651                 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled &&
2652                     dev_pw_id == wpa_s->p2p_oob_dev_pw_id) {
2653                         wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
2654                         wpa_s->p2p_wps_method = WPS_NFC;
2655                         wpa_s->pending_join_wps_method = WPS_NFC;
2656                         os_memcpy(wpa_s->pending_join_dev_addr,
2657                                   go_dev_addr, ETH_ALEN);
2658                         os_memcpy(wpa_s->pending_join_iface_addr,
2659                                   bssid, ETH_ALEN);
2660                         goto accept_inv;
2661                 }
2662 #endif /* CONFIG_WPS_NFC */
2663
2664                 /*
2665                  * Do not accept the invitation automatically; notify user and
2666                  * request approval.
2667                  */
2668                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2669         }
2670
2671         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2672         if (grp) {
2673                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2674                            "running persistent group");
2675                 if (*go)
2676                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2677                 goto accept_inv;
2678         }
2679
2680         if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2681             os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2682                 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2683                            "invitation to re-invoke a persistent group");
2684                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
2685         } else if (!wpa_s->conf->persistent_reconnect)
2686                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2687
2688         for (s = wpa_s->conf->ssid; s; s = s->next) {
2689                 if (s->disabled == 2 &&
2690                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2691                     s->ssid_len == ssid_len &&
2692                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2693                         break;
2694         }
2695
2696         if (!s) {
2697                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2698                            " requested reinvocation of an unknown group",
2699                            MAC2STR(sa));
2700                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2701         }
2702
2703         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2704                 *go = 1;
2705                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2706                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2707                                    "interface is already in use - reject "
2708                                    "invitation");
2709                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2710                 }
2711                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2712         } else if (s->mode == WPAS_MODE_P2P_GO) {
2713                 *go = 1;
2714                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2715                 {
2716                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2717                                    "interface address for the group");
2718                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2719                 }
2720                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2721                           ETH_ALEN);
2722         }
2723
2724 accept_inv:
2725         wpas_p2p_set_own_freq_preference(wpa_s, 0);
2726
2727         best_freq = 0;
2728         freqs = os_calloc(wpa_s->num_multichan_concurrent,
2729                           sizeof(struct wpa_used_freq_data));
2730         if (freqs) {
2731                 int num_channels = wpa_s->num_multichan_concurrent;
2732                 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels);
2733                 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
2734                 os_free(freqs);
2735         }
2736
2737         /* Get one of the frequencies currently in use */
2738         if (best_freq > 0) {
2739                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
2740                 wpas_p2p_set_own_freq_preference(wpa_s, best_freq);
2741
2742                 if (wpa_s->num_multichan_concurrent < 2 ||
2743                     wpas_p2p_num_unused_channels(wpa_s) < 1) {
2744                         wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
2745                         *force_freq = best_freq;
2746                 }
2747         }
2748
2749         if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
2750             wpas_p2p_num_unused_channels(wpa_s) > 0) {
2751                 if (*go == 0) {
2752                         /* We are the client */
2753                         wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
2754                                    "running a GO but we are capable of MCC, "
2755                                    "figure out the best channel to use");
2756                         *force_freq = 0;
2757                 } else if (!freq_included(channels, *force_freq)) {
2758                         /* We are the GO, and *force_freq is not in the
2759                          * intersection */
2760                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
2761                                    "in intersection but we are capable of MCC, "
2762                                    "figure out the best channel to use",
2763                                    *force_freq);
2764                         *force_freq = 0;
2765                 }
2766         }
2767
2768         return P2P_SC_SUCCESS;
2769 }
2770
2771
2772 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
2773                                      const u8 *ssid, size_t ssid_len,
2774                                      const u8 *go_dev_addr, u8 status,
2775                                      int op_freq)
2776 {
2777         struct wpa_supplicant *wpa_s = ctx;
2778         struct wpa_ssid *s;
2779
2780         for (s = wpa_s->conf->ssid; s; s = s->next) {
2781                 if (s->disabled == 2 &&
2782                     s->ssid_len == ssid_len &&
2783                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2784                         break;
2785         }
2786
2787         if (status == P2P_SC_SUCCESS) {
2788                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2789                            " was accepted; op_freq=%d MHz, SSID=%s",
2790                            MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
2791                 if (s) {
2792                         int go = s->mode == WPAS_MODE_P2P_GO;
2793                         wpas_p2p_group_add_persistent(
2794                                 wpa_s, s, go, 0, op_freq, 0, 0, NULL,
2795                                 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0);
2796                 } else if (bssid) {
2797                         wpa_s->user_initiated_pd = 0;
2798                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
2799                                       wpa_s->p2p_wps_method, 0, op_freq,
2800                                       ssid, ssid_len);
2801                 }
2802                 return;
2803         }
2804
2805         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
2806                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2807                            " was rejected (status %u)", MAC2STR(sa), status);
2808                 return;
2809         }
2810
2811         if (!s) {
2812                 if (bssid) {
2813                         wpa_msg_global(wpa_s, MSG_INFO,
2814                                        P2P_EVENT_INVITATION_RECEIVED
2815                                        "sa=" MACSTR " go_dev_addr=" MACSTR
2816                                        " bssid=" MACSTR " unknown-network",
2817                                        MAC2STR(sa), MAC2STR(go_dev_addr),
2818                                        MAC2STR(bssid));
2819                 } else {
2820                         wpa_msg_global(wpa_s, MSG_INFO,
2821                                        P2P_EVENT_INVITATION_RECEIVED
2822                                        "sa=" MACSTR " go_dev_addr=" MACSTR
2823                                        " unknown-network",
2824                                        MAC2STR(sa), MAC2STR(go_dev_addr));
2825                 }
2826                 return;
2827         }
2828
2829         if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
2830                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2831                                "sa=" MACSTR " persistent=%d freq=%d",
2832                                MAC2STR(sa), s->id, op_freq);
2833         } else {
2834                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2835                                "sa=" MACSTR " persistent=%d",
2836                                MAC2STR(sa), s->id);
2837         }
2838 }
2839
2840
2841 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
2842                                         struct wpa_ssid *ssid,
2843                                         const u8 *peer, int inv)
2844 {
2845         size_t i;
2846         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
2847
2848         if (ssid == NULL)
2849                 return;
2850
2851         for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
2852                 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer,
2853                               ETH_ALEN) == 0)
2854                         break;
2855         }
2856         if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) {
2857                 if (ssid->mode != WPAS_MODE_P2P_GO &&
2858                     os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
2859                         wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
2860                                    "due to invitation result", ssid->id);
2861                         wpas_notify_network_removed(wpa_s, ssid);
2862                         wpa_config_remove_network(wpa_s->conf, ssid->id);
2863                         return;
2864                 }
2865                 return; /* Peer not found in client list */
2866         }
2867
2868         wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
2869                    "group %d client list%s",
2870                    MAC2STR(peer), ssid->id,
2871                    inv ? " due to invitation result" : "");
2872         os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN,
2873                    ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
2874                    (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
2875         ssid->num_p2p_clients--;
2876         if (p2p_wpa_s->conf->update_config &&
2877             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
2878                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
2879 }
2880
2881
2882 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
2883                                           const u8 *peer)
2884 {
2885         struct wpa_ssid *ssid;
2886
2887         wpa_s = wpa_s->global->p2p_invite_group;
2888         if (wpa_s == NULL)
2889                 return; /* No known invitation group */
2890         ssid = wpa_s->current_ssid;
2891         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
2892             !ssid->p2p_persistent_group)
2893                 return; /* Not operating as a GO in persistent group */
2894         ssid = wpas_p2p_get_persistent(wpa_s->parent, peer,
2895                                        ssid->ssid, ssid->ssid_len);
2896         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
2897 }
2898
2899
2900 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
2901                                    const struct p2p_channels *channels,
2902                                    const u8 *peer, int neg_freq,
2903                                    int peer_oper_freq)
2904 {
2905         struct wpa_supplicant *wpa_s = ctx;
2906         struct wpa_ssid *ssid;
2907         int freq;
2908
2909         if (bssid) {
2910                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2911                                "status=%d " MACSTR,
2912                                status, MAC2STR(bssid));
2913         } else {
2914                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2915                                "status=%d ", status);
2916         }
2917         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
2918
2919         wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
2920                    status, MAC2STR(peer));
2921         if (wpa_s->pending_invite_ssid_id == -1) {
2922                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
2923                         wpas_remove_persistent_client(wpa_s, peer);
2924                 return; /* Invitation to active group */
2925         }
2926
2927         if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
2928                 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
2929                            "invitation exchange to indicate readiness for "
2930                            "re-invocation");
2931         }
2932
2933         if (status != P2P_SC_SUCCESS) {
2934                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
2935                         ssid = wpa_config_get_network(
2936                                 wpa_s->conf, wpa_s->pending_invite_ssid_id);
2937                         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
2938                 }
2939                 wpas_p2p_remove_pending_group_interface(wpa_s);
2940                 return;
2941         }
2942
2943         ssid = wpa_config_get_network(wpa_s->conf,
2944                                       wpa_s->pending_invite_ssid_id);
2945         if (ssid == NULL) {
2946                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
2947                            "data matching with invitation");
2948                 return;
2949         }
2950
2951         /*
2952          * The peer could have missed our ctrl::ack frame for Invitation
2953          * Response and continue retransmitting the frame. To reduce the
2954          * likelihood of the peer not getting successful TX status for the
2955          * Invitation Response frame, wait a short time here before starting
2956          * the persistent group so that we will remain on the current channel to
2957          * acknowledge any possible retransmission from the peer.
2958          */
2959         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
2960                 "starting persistent group");
2961         os_sleep(0, 50000);
2962
2963         if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
2964             freq_included(channels, neg_freq))
2965                 freq = neg_freq;
2966         else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
2967                  freq_included(channels, peer_oper_freq))
2968                 freq = peer_oper_freq;
2969         else
2970                 freq = 0;
2971
2972         wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
2973                    freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
2974         wpas_p2p_group_add_persistent(wpa_s, ssid,
2975                                       ssid->mode == WPAS_MODE_P2P_GO,
2976                                       wpa_s->p2p_persistent_go_freq,
2977                                       freq,
2978                                       wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
2979                                       channels,
2980                                       ssid->mode == WPAS_MODE_P2P_GO ?
2981                                       P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
2982                                       0);
2983 }
2984
2985
2986 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
2987                                     unsigned int freq)
2988 {
2989         if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
2990                 return 1;
2991         return freq_range_list_includes(&global->p2p_disallow_freq, freq);
2992 }
2993
2994
2995 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
2996 {
2997         reg->channel[reg->channels] = chan;
2998         reg->channels++;
2999 }
3000
3001
3002 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3003                                      struct p2p_channels *chan,
3004                                      struct p2p_channels *cli_chan)
3005 {
3006         int i, cla = 0;
3007
3008         wpa_s->global->p2p_24ghz_social_channels = 1;
3009
3010         os_memset(cli_chan, 0, sizeof(*cli_chan));
3011
3012         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3013                    "band");
3014
3015         /* Operating class 81 - 2.4 GHz band channels 1..13 */
3016         chan->reg_class[cla].reg_class = 81;
3017         chan->reg_class[cla].channels = 0;
3018         for (i = 0; i < 11; i++) {
3019                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3020                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3021         }
3022         if (chan->reg_class[cla].channels)
3023                 cla++;
3024
3025         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3026                    "band");
3027
3028         /* Operating class 115 - 5 GHz, channels 36-48 */
3029         chan->reg_class[cla].reg_class = 115;
3030         chan->reg_class[cla].channels = 0;
3031         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3032                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3033         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3034                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3035         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3036                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3037         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3038                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3039         if (chan->reg_class[cla].channels)
3040                 cla++;
3041
3042         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3043                    "band");
3044
3045         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3046         chan->reg_class[cla].reg_class = 124;
3047         chan->reg_class[cla].channels = 0;
3048         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3049                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3050         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3051                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3052         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3053                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3054         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3055                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3056         if (chan->reg_class[cla].channels)
3057                 cla++;
3058
3059         chan->reg_classes = cla;
3060         return 0;
3061 }
3062
3063
3064 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
3065                                           u16 num_modes,
3066                                           enum hostapd_hw_mode mode)
3067 {
3068         u16 i;
3069
3070         for (i = 0; i < num_modes; i++) {
3071                 if (modes[i].mode == mode)
3072                         return &modes[i];
3073         }
3074
3075         return NULL;
3076 }
3077
3078
3079 enum chan_allowed {
3080         NOT_ALLOWED, NO_IR, ALLOWED
3081 };
3082
3083 static int has_channel(struct wpa_global *global,
3084                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
3085 {
3086         int i;
3087         unsigned int freq;
3088
3089         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3090                 chan * 5;
3091         if (wpas_p2p_disallowed_freq(global, freq))
3092                 return NOT_ALLOWED;
3093
3094         for (i = 0; i < mode->num_channels; i++) {
3095                 if (mode->channels[i].chan == chan) {
3096                         if (flags)
3097                                 *flags = mode->channels[i].flag;
3098                         if (mode->channels[i].flag &
3099                             (HOSTAPD_CHAN_DISABLED |
3100                              HOSTAPD_CHAN_RADAR))
3101                                 return NOT_ALLOWED;
3102                         if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR)
3103                                 return NO_IR;
3104                         return ALLOWED;
3105                 }
3106         }
3107
3108         return NOT_ALLOWED;
3109 }
3110
3111
3112 struct p2p_oper_class_map {
3113         enum hostapd_hw_mode mode;
3114         u8 op_class;
3115         u8 min_chan;
3116         u8 max_chan;
3117         u8 inc;
3118         enum { BW20, BW40PLUS, BW40MINUS, BW80, BW2160 } bw;
3119 };
3120
3121 static const struct p2p_oper_class_map op_class[] = {
3122         { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
3123 #if 0 /* Do not enable HT40 on 2 GHz for now */
3124         { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
3125         { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
3126 #endif
3127         { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
3128         { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
3129         { HOSTAPD_MODE_IEEE80211A, 125, 149, 169, 4, BW20 },
3130         { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
3131         { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
3132         { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
3133         { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
3134
3135         /*
3136          * IEEE P802.11ac/D7.0 Table E-4 actually talks about channel center
3137          * frequency index 42, 58, 106, 122, 138, 155 with channel spacing of
3138          * 80 MHz, but currently use the following definition for simplicity
3139          * (these center frequencies are not actual channels, which makes
3140          * has_channel() fail). wpas_p2p_verify_80mhz() should take care of
3141          * removing invalid channels.
3142          */
3143         { HOSTAPD_MODE_IEEE80211A, 128, 36, 161, 4, BW80 },
3144         { HOSTAPD_MODE_IEEE80211AD, 180, 1, 4, 1, BW2160 },
3145         { -1, 0, 0, 0, 0, BW20 }
3146 };
3147
3148
3149 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3150                                      struct hostapd_hw_modes *mode,
3151                                      u8 channel)
3152 {
3153         u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3154         unsigned int i;
3155
3156         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3157                 return 0;
3158
3159         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3160                 /*
3161                  * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3162                  * so the center channel is 6 channels away from the start/end.
3163                  */
3164                 if (channel >= center_channels[i] - 6 &&
3165                     channel <= center_channels[i] + 6)
3166                         return center_channels[i];
3167
3168         return 0;
3169 }
3170
3171
3172 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3173                                                struct hostapd_hw_modes *mode,
3174                                                u8 channel, u8 bw)
3175 {
3176         u8 center_chan;
3177         int i, flags;
3178         enum chan_allowed res, ret = ALLOWED;
3179
3180         center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3181         if (!center_chan)
3182                 return NOT_ALLOWED;
3183         if (center_chan >= 58 && center_chan <= 138)
3184                 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3185
3186         /* check all the channels are available */
3187         for (i = 0; i < 4; i++) {
3188                 int adj_chan = center_chan - 6 + i * 4;
3189
3190                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3191                 if (res == NOT_ALLOWED)
3192                         return NOT_ALLOWED;
3193                 if (res == NO_IR)
3194                         ret = NO_IR;
3195
3196                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3197                         return NOT_ALLOWED;
3198                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3199                         return NOT_ALLOWED;
3200                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3201                         return NOT_ALLOWED;
3202                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3203                         return NOT_ALLOWED;
3204         }
3205
3206         return ret;
3207 }
3208
3209
3210 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3211                                                  struct hostapd_hw_modes *mode,
3212                                                  u8 channel, u8 bw)
3213 {
3214         int flag = 0;
3215         enum chan_allowed res, res2;
3216
3217         res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3218         if (bw == BW40MINUS) {
3219                 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3220                         return NOT_ALLOWED;
3221                 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3222         } else if (bw == BW40PLUS) {
3223                 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3224                         return NOT_ALLOWED;
3225                 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3226         } else if (bw == BW80) {
3227                 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3228         }
3229
3230         if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3231                 return NOT_ALLOWED;
3232         if (res == NO_IR || res2 == NO_IR)
3233                 return NO_IR;
3234         return res;
3235 }
3236
3237
3238 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3239                                    struct p2p_channels *chan,
3240                                    struct p2p_channels *cli_chan)
3241 {
3242         struct hostapd_hw_modes *mode;
3243         int cla, op, cli_cla;
3244
3245         if (wpa_s->hw.modes == NULL) {
3246                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3247                            "of all supported channels; assume dualband "
3248                            "support");
3249                 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3250         }
3251
3252         cla = cli_cla = 0;
3253
3254         for (op = 0; op_class[op].op_class; op++) {
3255                 const struct p2p_oper_class_map *o = &op_class[op];
3256                 u8 ch;
3257                 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3258
3259                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3260                 if (mode == NULL)
3261                         continue;
3262                 if (mode->mode == HOSTAPD_MODE_IEEE80211G)
3263                         wpa_s->global->p2p_24ghz_social_channels = 1;
3264                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3265                         enum chan_allowed res;
3266                         res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3267                         if (res == ALLOWED) {
3268                                 if (reg == NULL) {
3269                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3270                                                    o->op_class);
3271                                         reg = &chan->reg_class[cla];
3272                                         cla++;
3273                                         reg->reg_class = o->op_class;
3274                                 }
3275                                 reg->channel[reg->channels] = ch;
3276                                 reg->channels++;
3277                         } else if (res == NO_IR &&
3278                                    wpa_s->conf->p2p_add_cli_chan) {
3279                                 if (cli_reg == NULL) {
3280                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3281                                                    o->op_class);
3282                                         cli_reg = &cli_chan->reg_class[cli_cla];
3283                                         cli_cla++;
3284                                         cli_reg->reg_class = o->op_class;
3285                                 }
3286                                 cli_reg->channel[cli_reg->channels] = ch;
3287                                 cli_reg->channels++;
3288                         }
3289                 }
3290                 if (reg) {
3291                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3292                                     reg->channel, reg->channels);
3293                 }
3294                 if (cli_reg) {
3295                         wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3296                                     cli_reg->channel, cli_reg->channels);
3297                 }
3298         }
3299
3300         chan->reg_classes = cla;
3301         cli_chan->reg_classes = cli_cla;
3302
3303         return 0;
3304 }
3305
3306
3307 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3308                            struct hostapd_hw_modes *mode, u8 channel)
3309 {
3310         int op;
3311         enum chan_allowed ret;
3312
3313         for (op = 0; op_class[op].op_class; op++) {
3314                 const struct p2p_oper_class_map *o = &op_class[op];
3315                 u8 ch;
3316
3317                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3318                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3319                             o->bw == BW20 || ch != channel)
3320                                 continue;
3321                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3322                         if (ret == ALLOWED)
3323                                 return (o->bw == BW40MINUS) ? -1 : 1;
3324                 }
3325         }
3326         return 0;
3327 }
3328
3329
3330 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3331                               struct hostapd_hw_modes *mode, u8 channel)
3332 {
3333         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3334                 return 0;
3335
3336         return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3337 }
3338
3339
3340 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3341                         size_t buf_len)
3342 {
3343         struct wpa_supplicant *wpa_s = ctx;
3344
3345         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3346                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3347                         break;
3348         }
3349         if (wpa_s == NULL)
3350                 return -1;
3351
3352         return wpa_drv_get_noa(wpa_s, buf, buf_len);
3353 }
3354
3355
3356 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s,
3357                                               const u8 *ssid, size_t ssid_len)
3358 {
3359         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3360                 struct wpa_ssid *s = wpa_s->current_ssid;
3361                 if (s == NULL)
3362                         continue;
3363                 if (s->mode != WPAS_MODE_P2P_GO &&
3364                     s->mode != WPAS_MODE_AP &&
3365                     s->mode != WPAS_MODE_P2P_GROUP_FORMATION)
3366                         continue;
3367                 if (s->ssid_len != ssid_len ||
3368                     os_memcmp(ssid, s->ssid, ssid_len) != 0)
3369                         continue;
3370                 return wpa_s;
3371         }
3372
3373         return NULL;
3374
3375 }
3376
3377
3378 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s,
3379                                                   const u8 *peer_dev_addr)
3380 {
3381         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3382                 struct wpa_ssid *ssid = wpa_s->current_ssid;
3383                 if (ssid == NULL)
3384                         continue;
3385                 if (ssid->mode != WPAS_MODE_INFRA)
3386                         continue;
3387                 if (wpa_s->wpa_state != WPA_COMPLETED &&
3388                     wpa_s->wpa_state != WPA_GROUP_HANDSHAKE)
3389                         continue;
3390                 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0)
3391                         return wpa_s;
3392         }
3393
3394         return NULL;
3395 }
3396
3397
3398 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3399 {
3400         struct wpa_supplicant *wpa_s = ctx;
3401
3402         return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL;
3403 }
3404
3405
3406 static int wpas_is_concurrent_session_active(void *ctx)
3407 {
3408         struct wpa_supplicant *wpa_s = ctx;
3409         struct wpa_supplicant *ifs;
3410
3411         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3412                 if (ifs == wpa_s)
3413                         continue;
3414                 if (ifs->wpa_state > WPA_ASSOCIATED)
3415                         return 1;
3416         }
3417         return 0;
3418 }
3419
3420
3421 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3422 {
3423         struct wpa_supplicant *wpa_s = ctx;
3424         wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3425 }
3426
3427
3428 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s,
3429                                   const char *conf_p2p_dev)
3430 {
3431         struct wpa_interface iface;
3432         struct wpa_supplicant *p2pdev_wpa_s;
3433         char ifname[100];
3434         char force_name[100];
3435         int ret;
3436
3437         ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3438                           wpa_s->ifname);
3439         if (os_snprintf_error(sizeof(ifname), ret))
3440                 return -1;
3441         force_name[0] = '\0';
3442         wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3443         ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3444                              force_name, wpa_s->pending_interface_addr, NULL);
3445         if (ret < 0) {
3446                 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3447                 return ret;
3448         }
3449         os_strlcpy(wpa_s->pending_interface_name, ifname,
3450                    sizeof(wpa_s->pending_interface_name));
3451
3452         os_memset(&iface, 0, sizeof(iface));
3453         iface.p2p_mgmt = 1;
3454         iface.ifname = wpa_s->pending_interface_name;
3455         iface.driver = wpa_s->driver->name;
3456         iface.driver_param = wpa_s->conf->driver_param;
3457
3458         /*
3459          * If a P2P Device configuration file was given, use it as the interface
3460          * configuration file (instead of using parent's configuration file.
3461          */
3462         if (conf_p2p_dev) {
3463                 iface.confname = conf_p2p_dev;
3464                 iface.ctrl_interface = NULL;
3465         } else {
3466                 iface.confname = wpa_s->confname;
3467                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3468         }
3469         iface.conf_p2p_dev = NULL;
3470
3471         p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
3472         if (!p2pdev_wpa_s) {
3473                 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3474                 return -1;
3475         }
3476
3477         wpa_s->pending_interface_name[0] = '\0';
3478         return 0;
3479 }
3480
3481
3482 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3483                                const u8 *noa, size_t noa_len)
3484 {
3485         struct wpa_supplicant *wpa_s, *intf = ctx;
3486         char hex[100];
3487
3488         for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3489                 if (wpa_s->waiting_presence_resp)
3490                         break;
3491         }
3492         if (!wpa_s) {
3493                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3494                 return;
3495         }
3496         wpa_s->waiting_presence_resp = 0;
3497
3498         wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3499         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3500                 " status=%u noa=%s", MAC2STR(src), status, hex);
3501 }
3502
3503
3504 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid,
3505                                      size_t ssid_len, u8 *go_dev_addr,
3506                                      u8 *ret_ssid, size_t *ret_ssid_len)
3507 {
3508         struct wpa_supplicant *wpa_s = ctx;
3509         struct wpa_ssid *s;
3510
3511         s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len);
3512         if (s) {
3513                 os_memcpy(ret_ssid, s->ssid, s->ssid_len);
3514                 *ret_ssid_len = s->ssid_len;
3515                 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN);
3516                 return 1;
3517         }
3518
3519         return 0;
3520 }
3521
3522
3523 static int wpas_get_go_info(void *ctx, u8 *intended_addr,
3524                             u8 *ssid, size_t *ssid_len, int *group_iface)
3525 {
3526         struct wpa_supplicant *wpa_s = ctx;
3527         struct wpa_ssid *s;
3528         u8 bssid[ETH_ALEN];
3529
3530         s = wpas_p2p_group_go_ssid(wpa_s, bssid);
3531         if (!s) {
3532                 s = wpas_p2p_get_persistent_go(wpa_s);
3533                 if (s)
3534                         os_memcpy(bssid, s->bssid, ETH_ALEN);
3535         }
3536
3537         *group_iface = wpas_p2p_create_iface(wpa_s);
3538         if (!s)
3539                 return 0;
3540
3541         os_memcpy(intended_addr, bssid, ETH_ALEN);
3542         os_memcpy(ssid, s->ssid, s->ssid_len);
3543         *ssid_len = s->ssid_len;
3544
3545         return 1;
3546 }
3547
3548
3549 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go,
3550                                     const u8 *ssid, size_t ssid_len)
3551 {
3552         struct wpa_supplicant *wpa_s = ctx;
3553         struct wpa_ssid *s;
3554         int save_config = 0;
3555         size_t i;
3556
3557         /* Start with our first choice of Persistent Groups */
3558         while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) {
3559                 if (go && ssid && ssid_len &&
3560                     s->ssid_len == ssid_len &&
3561                     os_memcmp(go, s->bssid, ETH_ALEN) == 0 &&
3562                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3563                         break;
3564
3565                 /* Remove stale persistent group */
3566                 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) {
3567                         wpa_config_remove_network(wpa_s->conf, s->id);
3568                         save_config = 1;
3569                         continue;
3570                 }
3571
3572                 for (i = 0; i < s->num_p2p_clients; i++) {
3573                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
3574                                       peer, ETH_ALEN) != 0)
3575                                 continue;
3576
3577                         os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
3578                                    s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3579                                    (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3580                         break;
3581                 }
3582                 s->num_p2p_clients--;
3583                 save_config = 1;
3584         }
3585
3586         if (save_config)
3587                 p2p_config_write(wpa_s);
3588
3589         /* Return TRUE if valid SSID remains */
3590         return s != NULL;
3591 }
3592
3593
3594 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev,
3595                                     const u8 *adv_mac, const u8 *ses_mac,
3596                                     const u8 *grp_mac, u32 adv_id, u32 ses_id,
3597                                     u8 conncap, int passwd_id,
3598                                     const u8 *persist_ssid,
3599                                     size_t persist_ssid_size, int response_done,
3600                                     int prov_start, const char *session_info)
3601 {
3602         struct wpa_supplicant *wpa_s = ctx;
3603         u8 mac[ETH_ALEN];
3604         struct wpa_ssid *persistent_go, *stale, *s;
3605         int save_config = 0;
3606         struct wpa_supplicant *go_wpa_s;
3607
3608         if (!dev)
3609                 return;
3610
3611         os_memset(mac, 0, ETH_ALEN);
3612         if (!adv_mac)
3613                 adv_mac = mac;
3614         if (!ses_mac)
3615                 ses_mac = mac;
3616         if (!grp_mac)
3617                 grp_mac = mac;
3618
3619         if (prov_start) {
3620                 if (session_info == NULL) {
3621                         wpa_msg_global(wpa_s, MSG_INFO,
3622                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3623                                        " adv_id=%x conncap=%x"
3624                                        " adv_mac=" MACSTR
3625                                        " session=%x mac=" MACSTR
3626                                        " dev_passwd_id=%d",
3627                                        MAC2STR(dev), adv_id, conncap,
3628                                        MAC2STR(adv_mac),
3629                                        ses_id, MAC2STR(ses_mac),
3630                                        passwd_id);
3631                 } else {
3632                         wpa_msg_global(wpa_s, MSG_INFO,
3633                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3634                                        " adv_id=%x conncap=%x"
3635                                        " adv_mac=" MACSTR
3636                                        " session=%x mac=" MACSTR
3637                                        " dev_passwd_id=%d info='%s'",
3638                                        MAC2STR(dev), adv_id, conncap,
3639                                        MAC2STR(adv_mac),
3640                                        ses_id, MAC2STR(ses_mac),
3641                                        passwd_id, session_info);
3642                 }
3643                 return;
3644         }
3645
3646         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
3647         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
3648
3649         if (status && status != P2P_SC_SUCCESS_DEFERRED) {
3650                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
3651                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
3652
3653                 if (persistent_go && !persistent_go->num_p2p_clients) {
3654                         /* remove empty persistent GO */
3655                         wpa_config_remove_network(wpa_s->conf,
3656                                                   persistent_go->id);
3657                 }
3658
3659                 wpa_msg_global(wpa_s, MSG_INFO,
3660                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3661                                " status=%d"
3662                                " adv_id=%x adv_mac=" MACSTR
3663                                " session=%x mac=" MACSTR,
3664                                MAC2STR(dev), status,
3665                                adv_id, MAC2STR(adv_mac),
3666                                ses_id, MAC2STR(ses_mac));
3667                 return;
3668         }
3669
3670         /* Clean up stale persistent groups with this device */
3671         s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid,
3672                                     persist_ssid_size);
3673         for (;;) {
3674                 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0);
3675                 if (!stale)
3676                         break;
3677
3678                 if (s && s->ssid_len == stale->ssid_len &&
3679                     os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 &&
3680                     os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0)
3681                         break;
3682
3683                 /* Remove stale persistent group */
3684                 if (stale->mode != WPAS_MODE_P2P_GO ||
3685                     stale->num_p2p_clients <= 1) {
3686                         wpa_config_remove_network(wpa_s->conf, stale->id);
3687                 } else {
3688                         size_t i;
3689
3690                         for (i = 0; i < stale->num_p2p_clients; i++) {
3691                                 if (os_memcmp(stale->p2p_client_list +
3692                                               i * ETH_ALEN,
3693                                               dev, ETH_ALEN) == 0) {
3694                                         os_memmove(stale->p2p_client_list +
3695                                                    i * ETH_ALEN,
3696                                                    stale->p2p_client_list +
3697                                                    (i + 1) * ETH_ALEN,
3698                                                    (stale->num_p2p_clients -
3699                                                     i - 1) * ETH_ALEN);
3700                                         break;
3701                                 }
3702                         }
3703                         stale->num_p2p_clients--;
3704                 }
3705                 save_config = 1;
3706         }
3707
3708         if (save_config)
3709                 p2p_config_write(wpa_s);
3710
3711         if (s) {
3712                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
3713                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
3714
3715                 if (persistent_go && s != persistent_go &&
3716                     !persistent_go->num_p2p_clients) {
3717                         /* remove empty persistent GO */
3718                         wpa_config_remove_network(wpa_s->conf,
3719                                                   persistent_go->id);
3720                         /* Save config */
3721                 }
3722
3723                 wpa_msg_global(wpa_s, MSG_INFO,
3724                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3725                                " status=%d"
3726                                " adv_id=%x adv_mac=" MACSTR
3727                                " session=%x mac=" MACSTR
3728                                " persist=%d",
3729                                MAC2STR(dev), status,
3730                                adv_id, MAC2STR(adv_mac),
3731                                ses_id, MAC2STR(ses_mac), s->id);
3732                 return;
3733         }
3734
3735         if (conncap == P2PS_SETUP_GROUP_OWNER) {
3736                 const char *go_ifname = NULL;
3737                 if (!go_wpa_s) {
3738                         wpa_s->global->pending_p2ps_group = 1;
3739
3740                         if (wpa_s->conf->p2p_no_group_iface)
3741                                 go_ifname = wpa_s->ifname;
3742                         else if (wpa_s->pending_interface_name[0])
3743                                 go_ifname = wpa_s->pending_interface_name;
3744
3745                         if (!go_ifname) {
3746                                 wpas_p2ps_prov_complete(
3747                                         wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP,
3748                                         dev, adv_mac, ses_mac,
3749                                         NULL, adv_id, ses_id, 0, 0,
3750                                         NULL, 0, 0, 0, NULL);
3751                                 return;
3752                         }
3753
3754                         /* If PD Resp complete, start up the GO */
3755                         if (response_done && persistent_go) {
3756                                 wpas_p2p_group_add_persistent(
3757                                         wpa_s, persistent_go,
3758                                         0, 0, 0, 0, 0, NULL,
3759                                         persistent_go->mode ==
3760                                         WPAS_MODE_P2P_GO ?
3761                                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3762                                         0);
3763                         } else if (response_done) {
3764                                 wpas_p2p_group_add(wpa_s, 1, 0, 0, 0);
3765                         }
3766
3767                         if (passwd_id == DEV_PW_P2PS_DEFAULT) {
3768                                 os_memcpy(wpa_s->p2ps_join_addr, dev, ETH_ALEN);
3769                                 wpa_s->p2ps_join_addr_valid = 1;
3770                                 wpa_dbg(wpa_s, MSG_DEBUG,
3771                                         "P2PS: Saving PIN for " MACSTR,
3772                                         MAC2STR(dev));
3773                         }
3774                 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) {
3775                         go_ifname = go_wpa_s->ifname;
3776
3777                         wpa_dbg(go_wpa_s, MSG_DEBUG,
3778                                 "P2P: Setting PIN-1 For " MACSTR, MAC2STR(dev));
3779                         wpa_supplicant_ap_wps_pin(go_wpa_s, dev, "12345670",
3780                                                   NULL, 0, 0);
3781
3782                         os_memcpy(wpa_s->p2ps_join_addr, dev, ETH_ALEN);
3783                         wpa_s->p2ps_join_addr_valid = 1;
3784                         wpa_dbg(wpa_s, MSG_DEBUG,
3785                                 "P2PS: Saving PIN for " MACSTR, MAC2STR(dev));
3786                 }
3787
3788                 wpa_msg_global(wpa_s, MSG_INFO,
3789                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3790                                " status=%d conncap=%x"
3791                                " adv_id=%x adv_mac=" MACSTR
3792                                " session=%x mac=" MACSTR
3793                                " dev_passwd_id=%d go=%s",
3794                                MAC2STR(dev), status, conncap,
3795                                adv_id, MAC2STR(adv_mac),
3796                                ses_id, MAC2STR(ses_mac),
3797                                passwd_id, go_ifname);
3798                 return;
3799         }
3800
3801         if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
3802                 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
3803
3804         if (persistent_go && !persistent_go->num_p2p_clients) {
3805                 /* remove empty persistent GO */
3806                 wpa_config_remove_network(wpa_s->conf, persistent_go->id);
3807         }
3808
3809         if (conncap == P2PS_SETUP_CLIENT) {
3810                 wpa_msg_global(wpa_s, MSG_INFO,
3811                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3812                                " status=%d conncap=%x"
3813                                " adv_id=%x adv_mac=" MACSTR
3814                                " session=%x mac=" MACSTR
3815                                " dev_passwd_id=%d join=" MACSTR,
3816                                MAC2STR(dev), status, conncap,
3817                                adv_id, MAC2STR(adv_mac),
3818                                ses_id, MAC2STR(ses_mac),
3819                                passwd_id, MAC2STR(grp_mac));
3820         } else {
3821                 wpa_msg_global(wpa_s, MSG_INFO,
3822                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3823                                " status=%d conncap=%x"
3824                                " adv_id=%x adv_mac=" MACSTR
3825                                " session=%x mac=" MACSTR
3826                                " dev_passwd_id=%d",
3827                                MAC2STR(dev), status, conncap,
3828                                adv_id, MAC2STR(adv_mac),
3829                                ses_id, MAC2STR(ses_mac),
3830                                passwd_id);
3831         }
3832 }
3833
3834
3835 static int _wpas_p2p_in_progress(void *ctx)
3836 {
3837         struct wpa_supplicant *wpa_s = ctx;
3838         return wpas_p2p_in_progress(wpa_s);
3839 }
3840
3841
3842 static int wpas_prov_disc_resp_cb(void *ctx)
3843 {
3844         struct wpa_supplicant *wpa_s = ctx;
3845         struct wpa_ssid *persistent_go;
3846
3847         if (!wpa_s->global->pending_p2ps_group)
3848                 return 0;
3849
3850         wpa_s->global->pending_p2ps_group = 0;
3851
3852         if (wpas_p2p_get_go_group(wpa_s))
3853                 return 0;
3854         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
3855
3856         if (persistent_go) {
3857                 wpas_p2p_group_add_persistent(
3858                         wpa_s, persistent_go, 0, 0, 0, 0, 0, NULL,
3859                         persistent_go->mode == WPAS_MODE_P2P_GO ?
3860                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0);
3861         } else {
3862                 wpas_p2p_group_add(wpa_s, 1, 0, 0, 0);
3863         }
3864
3865         return 1;
3866 }
3867
3868
3869 /**
3870  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
3871  * @global: Pointer to global data from wpa_supplicant_init()
3872  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3873  * Returns: 0 on success, -1 on failure
3874  */
3875 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
3876 {
3877         struct p2p_config p2p;
3878         int i;
3879
3880         if (wpa_s->conf->p2p_disabled)
3881                 return 0;
3882
3883         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
3884                 return 0;
3885
3886         if (global->p2p)
3887                 return 0;
3888
3889         os_memset(&p2p, 0, sizeof(p2p));
3890         p2p.cb_ctx = wpa_s;
3891         p2p.debug_print = wpas_p2p_debug_print;
3892         p2p.p2p_scan = wpas_p2p_scan;
3893         p2p.send_action = wpas_send_action;
3894         p2p.send_action_done = wpas_send_action_done;
3895         p2p.go_neg_completed = wpas_go_neg_completed;
3896         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
3897         p2p.dev_found = wpas_dev_found;
3898         p2p.dev_lost = wpas_dev_lost;
3899         p2p.find_stopped = wpas_find_stopped;
3900         p2p.start_listen = wpas_start_listen;
3901         p2p.stop_listen = wpas_stop_listen;
3902         p2p.send_probe_resp = wpas_send_probe_resp;
3903         p2p.sd_request = wpas_sd_request;
3904         p2p.sd_response = wpas_sd_response;
3905         p2p.prov_disc_req = wpas_prov_disc_req;
3906         p2p.prov_disc_resp = wpas_prov_disc_resp;
3907         p2p.prov_disc_fail = wpas_prov_disc_fail;
3908         p2p.invitation_process = wpas_invitation_process;
3909         p2p.invitation_received = wpas_invitation_received;
3910         p2p.invitation_result = wpas_invitation_result;
3911         p2p.get_noa = wpas_get_noa;
3912         p2p.go_connected = wpas_go_connected;
3913         p2p.presence_resp = wpas_presence_resp;
3914         p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
3915         p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
3916         p2p.get_persistent_group = wpas_get_persistent_group;
3917         p2p.get_go_info = wpas_get_go_info;
3918         p2p.remove_stale_groups = wpas_remove_stale_groups;
3919         p2p.p2ps_prov_complete = wpas_p2ps_prov_complete;
3920         p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb;
3921         p2p.p2ps_group_capability = p2ps_group_capability;
3922
3923         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
3924         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
3925         p2p.dev_name = wpa_s->conf->device_name;
3926         p2p.manufacturer = wpa_s->conf->manufacturer;
3927         p2p.model_name = wpa_s->conf->model_name;
3928         p2p.model_number = wpa_s->conf->model_number;
3929         p2p.serial_number = wpa_s->conf->serial_number;
3930         if (wpa_s->wps) {
3931                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
3932                 p2p.config_methods = wpa_s->wps->config_methods;
3933         }
3934
3935         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
3936                 wpa_printf(MSG_ERROR,
3937                            "P2P: Failed to configure supported channel list");
3938                 return -1;
3939         }
3940
3941         if (wpa_s->conf->p2p_listen_reg_class &&
3942             wpa_s->conf->p2p_listen_channel) {
3943                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
3944                 p2p.channel = wpa_s->conf->p2p_listen_channel;
3945                 p2p.channel_forced = 1;
3946         } else {
3947                 /*
3948                  * Pick one of the social channels randomly as the listen
3949                  * channel.
3950                  */
3951                 if (p2p_config_get_random_social(&p2p, &p2p.reg_class,
3952                                                  &p2p.channel) != 0) {
3953                         wpa_printf(MSG_INFO,
3954                                    "P2P: No social channels supported by the driver - do not enable P2P");
3955                         return 0;
3956                 }
3957                 p2p.channel_forced = 0;
3958         }
3959         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d",
3960                    p2p.reg_class, p2p.channel);
3961
3962         if (wpa_s->conf->p2p_oper_reg_class &&
3963             wpa_s->conf->p2p_oper_channel) {
3964                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
3965                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
3966                 p2p.cfg_op_channel = 1;
3967                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
3968                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
3969
3970         } else {
3971                 /*
3972                  * Use random operation channel from 2.4 GHz band social
3973                  * channels (1, 6, 11) or band 60 GHz social channel (2) if no
3974                  * other preference is indicated.
3975                  */
3976                 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class,
3977                                                  &p2p.op_channel) != 0) {
3978                         wpa_printf(MSG_ERROR,
3979                                    "P2P: Failed to select random social channel as operation channel");
3980                         return -1;
3981                 }
3982                 p2p.cfg_op_channel = 0;
3983                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
3984                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
3985         }
3986
3987         if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
3988                 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
3989                 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
3990         }
3991
3992         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
3993                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
3994                 p2p.country[2] = 0x04;
3995         } else
3996                 os_memcpy(p2p.country, "XX\x04", 3);
3997
3998         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
3999                   WPS_DEV_TYPE_LEN);
4000
4001         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
4002         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
4003                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
4004
4005         p2p.concurrent_operations = !!(wpa_s->drv_flags &
4006                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
4007
4008         p2p.max_peers = 100;
4009
4010         if (wpa_s->conf->p2p_ssid_postfix) {
4011                 p2p.ssid_postfix_len =
4012                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
4013                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
4014                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
4015                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
4016                           p2p.ssid_postfix_len);
4017         }
4018
4019         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
4020
4021         p2p.max_listen = wpa_s->max_remain_on_chan;
4022
4023         if (wpa_s->conf->p2p_passphrase_len >= 8 &&
4024             wpa_s->conf->p2p_passphrase_len <= 63)
4025                 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len;
4026         else
4027                 p2p.passphrase_len = 8;
4028
4029         global->p2p = p2p_init(&p2p);
4030         if (global->p2p == NULL)
4031                 return -1;
4032         global->p2p_init_wpa_s = wpa_s;
4033
4034         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4035                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4036                         continue;
4037                 p2p_add_wps_vendor_extension(
4038                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
4039         }
4040
4041         p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
4042
4043         return 0;
4044 }
4045
4046
4047 /**
4048  * wpas_p2p_deinit - Deinitialize per-interface P2P data
4049  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4050  *
4051  * This function deinitialize per-interface P2P data.
4052  */
4053 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
4054 {
4055         if (wpa_s->driver && wpa_s->drv_priv)
4056                 wpa_drv_probe_req_report(wpa_s, 0);
4057
4058         if (wpa_s->go_params) {
4059                 /* Clear any stored provisioning info */
4060                 p2p_clear_provisioning_info(
4061                         wpa_s->global->p2p,
4062                         wpa_s->go_params->peer_device_addr);
4063         }
4064
4065         os_free(wpa_s->go_params);
4066         wpa_s->go_params = NULL;
4067         eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
4068         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4069         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4070         wpa_s->p2p_long_listen = 0;
4071         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4072         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4073         wpas_p2p_remove_pending_group_interface(wpa_s);
4074         eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
4075         wpas_p2p_listen_work_done(wpa_s);
4076         if (wpa_s->p2p_send_action_work) {
4077                 os_free(wpa_s->p2p_send_action_work->ctx);
4078                 radio_work_done(wpa_s->p2p_send_action_work);
4079                 wpa_s->p2p_send_action_work = NULL;
4080         }
4081         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
4082
4083         wpabuf_free(wpa_s->p2p_oob_dev_pw);
4084         wpa_s->p2p_oob_dev_pw = NULL;
4085
4086         os_free(wpa_s->p2p_group_common_freqs);
4087         wpa_s->p2p_group_common_freqs = NULL;
4088         wpa_s->p2p_group_common_freqs_num = 0;
4089
4090         /* TODO: remove group interface from the driver if this wpa_s instance
4091          * is on top of a P2P group interface */
4092 }
4093
4094
4095 /**
4096  * wpas_p2p_deinit_global - Deinitialize global P2P module
4097  * @global: Pointer to global data from wpa_supplicant_init()
4098  *
4099  * This function deinitializes the global (per device) P2P module.
4100  */
4101 static void wpas_p2p_deinit_global(struct wpa_global *global)
4102 {
4103         struct wpa_supplicant *wpa_s, *tmp;
4104
4105         wpa_s = global->ifaces;
4106
4107         wpas_p2p_service_flush(global->p2p_init_wpa_s);
4108
4109         /* Remove remaining P2P group interfaces */
4110         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
4111                 wpa_s = wpa_s->next;
4112         while (wpa_s) {
4113                 tmp = global->ifaces;
4114                 while (tmp &&
4115                        (tmp == wpa_s ||
4116                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
4117                         tmp = tmp->next;
4118                 }
4119                 if (tmp == NULL)
4120                         break;
4121                 /* Disconnect from the P2P group and deinit the interface */
4122                 wpas_p2p_disconnect(tmp);
4123         }
4124
4125         /*
4126          * Deinit GO data on any possibly remaining interface (if main
4127          * interface is used as GO).
4128          */
4129         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4130                 if (wpa_s->ap_iface)
4131                         wpas_p2p_group_deinit(wpa_s);
4132         }
4133
4134         p2p_deinit(global->p2p);
4135         global->p2p = NULL;
4136         global->p2p_init_wpa_s = NULL;
4137 }
4138
4139
4140 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4141 {
4142         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
4143             wpa_s->conf->p2p_no_group_iface)
4144                 return 0; /* separate interface disabled per configuration */
4145         if (wpa_s->drv_flags &
4146             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4147              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4148                 return 1; /* P2P group requires a new interface in every case
4149                            */
4150         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4151                 return 0; /* driver does not support concurrent operations */
4152         if (wpa_s->global->ifaces->next)
4153                 return 1; /* more that one interface already in use */
4154         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4155                 return 1; /* this interface is already in use */
4156         return 0;
4157 }
4158
4159
4160 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4161                                  const u8 *peer_addr,
4162                                  enum p2p_wps_method wps_method,
4163                                  int go_intent, const u8 *own_interface_addr,
4164                                  unsigned int force_freq, int persistent_group,
4165                                  struct wpa_ssid *ssid, unsigned int pref_freq)
4166 {
4167         if (persistent_group && wpa_s->conf->persistent_reconnect)
4168                 persistent_group = 2;
4169
4170         /*
4171          * Increase GO config timeout if HT40 is used since it takes some time
4172          * to scan channels for coex purposes before the BSS can be started.
4173          */
4174         p2p_set_config_timeout(wpa_s->global->p2p,
4175                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4176
4177         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4178                            go_intent, own_interface_addr, force_freq,
4179                            persistent_group, ssid ? ssid->ssid : NULL,
4180                            ssid ? ssid->ssid_len : 0,
4181                            wpa_s->p2p_pd_before_go_neg, pref_freq,
4182                            wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4183                            0);
4184 }
4185
4186
4187 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4188                                 const u8 *peer_addr,
4189                                 enum p2p_wps_method wps_method,
4190                                 int go_intent, const u8 *own_interface_addr,
4191                                 unsigned int force_freq, int persistent_group,
4192                                 struct wpa_ssid *ssid, unsigned int pref_freq)
4193 {
4194         if (persistent_group && wpa_s->conf->persistent_reconnect)
4195                 persistent_group = 2;
4196
4197         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4198                              go_intent, own_interface_addr, force_freq,
4199                              persistent_group, ssid ? ssid->ssid : NULL,
4200                              ssid ? ssid->ssid_len : 0, pref_freq,
4201                              wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4202                              0);
4203 }
4204
4205
4206 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4207 {
4208         wpa_s->p2p_join_scan_count++;
4209         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4210                    wpa_s->p2p_join_scan_count);
4211         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4212                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4213                            " for join operationg - stop join attempt",
4214                            MAC2STR(wpa_s->pending_join_iface_addr));
4215                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4216                 if (wpa_s->p2p_auto_pd) {
4217                         wpa_s->p2p_auto_pd = 0;
4218                         wpa_msg_global(wpa_s, MSG_INFO,
4219                                        P2P_EVENT_PROV_DISC_FAILURE
4220                                        " p2p_dev_addr=" MACSTR " status=N/A",
4221                                        MAC2STR(wpa_s->pending_join_dev_addr));
4222                         return;
4223                 }
4224                 wpa_msg_global(wpa_s->parent, MSG_INFO,
4225                                P2P_EVENT_GROUP_FORMATION_FAILURE);
4226         }
4227 }
4228
4229
4230 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4231 {
4232         int res;
4233         unsigned int num, i;
4234         struct wpa_used_freq_data *freqs;
4235
4236         if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4237                 /* Multiple channels are supported and not all are in use */
4238                 return 0;
4239         }
4240
4241         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4242                           sizeof(struct wpa_used_freq_data));
4243         if (!freqs)
4244                 return 1;
4245
4246         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4247                                         wpa_s->num_multichan_concurrent);
4248
4249         for (i = 0; i < num; i++) {
4250                 if (freqs[i].freq == freq) {
4251                         wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4252                                    freq);
4253                         res = 0;
4254                         goto exit_free;
4255                 }
4256         }
4257
4258         wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
4259         res = 1;
4260
4261 exit_free:
4262         os_free(freqs);
4263         return res;
4264 }
4265
4266
4267 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4268                             const u8 *peer_dev_addr)
4269 {
4270         struct wpa_bss *bss;
4271         int updated;
4272
4273         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4274         if (bss == NULL)
4275                 return -1;
4276         if (bss->last_update_idx < wpa_s->bss_update_idx) {
4277                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4278                            "last scan");
4279                 return 0;
4280         }
4281
4282         updated = os_reltime_before(&wpa_s->p2p_auto_started,
4283                                     &bss->last_update);
4284         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4285                    "%ld.%06ld (%supdated in last scan)",
4286                    bss->last_update.sec, bss->last_update.usec,
4287                    updated ? "": "not ");
4288
4289         return updated;
4290 }
4291
4292
4293 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4294                                    struct wpa_scan_results *scan_res)
4295 {
4296         struct wpa_bss *bss = NULL;
4297         int freq;
4298         u8 iface_addr[ETH_ALEN];
4299
4300         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4301
4302         if (wpa_s->global->p2p_disabled)
4303                 return;
4304
4305         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4306                    scan_res ? (int) scan_res->num : -1,
4307                    wpa_s->p2p_auto_join ? "auto_" : "");
4308
4309         if (scan_res)
4310                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4311
4312         if (wpa_s->p2p_auto_pd) {
4313                 int join = wpas_p2p_peer_go(wpa_s,
4314                                             wpa_s->pending_join_dev_addr);
4315                 if (join == 0 &&
4316                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4317                         wpa_s->auto_pd_scan_retry++;
4318                         bss = wpa_bss_get_bssid_latest(
4319                                 wpa_s, wpa_s->pending_join_dev_addr);
4320                         if (bss) {
4321                                 freq = bss->freq;
4322                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4323                                            "the peer " MACSTR " at %d MHz",
4324                                            wpa_s->auto_pd_scan_retry,
4325                                            MAC2STR(wpa_s->
4326                                                    pending_join_dev_addr),
4327                                            freq);
4328                                 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4329                                 return;
4330                         }
4331                 }
4332
4333                 if (join < 0)
4334                         join = 0;
4335
4336                 wpa_s->p2p_auto_pd = 0;
4337                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4338                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4339                            MAC2STR(wpa_s->pending_join_dev_addr), join);
4340                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4341                                       wpa_s->pending_join_dev_addr, NULL,
4342                                       wpa_s->pending_pd_config_methods, join,
4343                                       0, wpa_s->user_initiated_pd) < 0) {
4344                         wpa_s->p2p_auto_pd = 0;
4345                         wpa_msg_global(wpa_s, MSG_INFO,
4346                                        P2P_EVENT_PROV_DISC_FAILURE
4347                                        " p2p_dev_addr=" MACSTR " status=N/A",
4348                                        MAC2STR(wpa_s->pending_join_dev_addr));
4349                 }
4350                 return;
4351         }
4352
4353         if (wpa_s->p2p_auto_join) {
4354                 int join = wpas_p2p_peer_go(wpa_s,
4355                                             wpa_s->pending_join_dev_addr);
4356                 if (join < 0) {
4357                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4358                                    "running a GO -> use GO Negotiation");
4359                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4360                                        P2P_EVENT_FALLBACK_TO_GO_NEG
4361                                        "reason=peer-not-running-GO");
4362                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4363                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4364                                          wpa_s->p2p_persistent_group, 0, 0, 0,
4365                                          wpa_s->p2p_go_intent,
4366                                          wpa_s->p2p_connect_freq,
4367                                          wpa_s->p2p_persistent_id,
4368                                          wpa_s->p2p_pd_before_go_neg,
4369                                          wpa_s->p2p_go_ht40,
4370                                          wpa_s->p2p_go_vht);
4371                         return;
4372                 }
4373
4374                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4375                            "try to join the group", join ? "" :
4376                            " in older scan");
4377                 if (!join) {
4378                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4379                                        P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED);
4380                         wpa_s->p2p_fallback_to_go_neg = 1;
4381                 }
4382         }
4383
4384         freq = p2p_get_oper_freq(wpa_s->global->p2p,
4385                                  wpa_s->pending_join_iface_addr);
4386         if (freq < 0 &&
4387             p2p_get_interface_addr(wpa_s->global->p2p,
4388                                    wpa_s->pending_join_dev_addr,
4389                                    iface_addr) == 0 &&
4390             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0
4391             && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) {
4392                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4393                            "address for join from " MACSTR " to " MACSTR
4394                            " based on newly discovered P2P peer entry",
4395                            MAC2STR(wpa_s->pending_join_iface_addr),
4396                            MAC2STR(iface_addr));
4397                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4398                           ETH_ALEN);
4399
4400                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4401                                          wpa_s->pending_join_iface_addr);
4402         }
4403         if (freq >= 0) {
4404                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4405                            "from P2P peer table: %d MHz", freq);
4406         }
4407         if (wpa_s->p2p_join_ssid_len) {
4408                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4409                            MACSTR " and SSID %s",
4410                            MAC2STR(wpa_s->pending_join_iface_addr),
4411                            wpa_ssid_txt(wpa_s->p2p_join_ssid,
4412                                         wpa_s->p2p_join_ssid_len));
4413                 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4414                                   wpa_s->p2p_join_ssid,
4415                                   wpa_s->p2p_join_ssid_len);
4416         }
4417         if (!bss) {
4418                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4419                            MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4420                 bss = wpa_bss_get_bssid_latest(wpa_s,
4421                                                wpa_s->pending_join_iface_addr);
4422         }
4423         if (bss) {
4424                 u8 dev_addr[ETH_ALEN];
4425
4426                 freq = bss->freq;
4427                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4428                            "from BSS table: %d MHz (SSID %s)", freq,
4429                            wpa_ssid_txt(bss->ssid, bss->ssid_len));
4430                 if (p2p_parse_dev_addr((const u8 *) (bss + 1), bss->ie_len,
4431                                        dev_addr) == 0 &&
4432                     os_memcmp(wpa_s->pending_join_dev_addr,
4433                               wpa_s->pending_join_iface_addr, ETH_ALEN) == 0 &&
4434                     os_memcmp(dev_addr, wpa_s->pending_join_dev_addr,
4435                               ETH_ALEN) != 0) {
4436                         wpa_printf(MSG_DEBUG,
4437                                    "P2P: Update target GO device address based on BSS entry: " MACSTR " (was " MACSTR ")",
4438                                    MAC2STR(dev_addr),
4439                                    MAC2STR(wpa_s->pending_join_dev_addr));
4440                         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr,
4441                                   ETH_ALEN);
4442                 }
4443         }
4444         if (freq > 0) {
4445                 u16 method;
4446
4447                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4448                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4449                                        P2P_EVENT_GROUP_FORMATION_FAILURE
4450                                        "reason=FREQ_CONFLICT");
4451                         return;
4452                 }
4453
4454                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4455                            "prior to joining an existing group (GO " MACSTR
4456                            " freq=%u MHz)",
4457                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
4458                 wpa_s->pending_pd_before_join = 1;
4459
4460                 switch (wpa_s->pending_join_wps_method) {
4461                 case WPS_PIN_DISPLAY:
4462                         method = WPS_CONFIG_KEYPAD;
4463                         break;
4464                 case WPS_PIN_KEYPAD:
4465                         method = WPS_CONFIG_DISPLAY;
4466                         break;
4467                 case WPS_PBC:
4468                         method = WPS_CONFIG_PUSHBUTTON;
4469                         break;
4470                 default:
4471                         method = 0;
4472                         break;
4473                 }
4474
4475                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4476                                                wpa_s->pending_join_dev_addr) ==
4477                      method)) {
4478                         /*
4479                          * We have already performed provision discovery for
4480                          * joining the group. Proceed directly to join
4481                          * operation without duplicated provision discovery. */
4482                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4483                                    "with " MACSTR " already done - proceed to "
4484                                    "join",
4485                                    MAC2STR(wpa_s->pending_join_dev_addr));
4486                         wpa_s->pending_pd_before_join = 0;
4487                         goto start;
4488                 }
4489
4490                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4491                                       wpa_s->pending_join_dev_addr,
4492                                       NULL, method, 1,
4493                                       freq, wpa_s->user_initiated_pd) < 0) {
4494                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4495                                    "Discovery Request before joining an "
4496                                    "existing group");
4497                         wpa_s->pending_pd_before_join = 0;
4498                         goto start;
4499                 }
4500                 return;
4501         }
4502
4503         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4504         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4505         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4506         wpas_p2p_check_join_scan_limit(wpa_s);
4507         return;
4508
4509 start:
4510         /* Start join operation immediately */
4511         wpas_p2p_join_start(wpa_s, 0, NULL, 0);
4512 }
4513
4514
4515 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4516                                    const u8 *ssid, size_t ssid_len)
4517 {
4518         int ret;
4519         struct wpa_driver_scan_params params;
4520         struct wpabuf *wps_ie, *ies;
4521         size_t ielen;
4522         int freqs[2] = { 0, 0 };
4523
4524         os_memset(&params, 0, sizeof(params));
4525
4526         /* P2P Wildcard SSID */
4527         params.num_ssids = 1;
4528         if (ssid && ssid_len) {
4529                 params.ssids[0].ssid = ssid;
4530                 params.ssids[0].ssid_len = ssid_len;
4531                 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4532                 wpa_s->p2p_join_ssid_len = ssid_len;
4533         } else {
4534                 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4535                 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4536                 wpa_s->p2p_join_ssid_len = 0;
4537         }
4538
4539         wpa_s->wps->dev.p2p = 1;
4540         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4541                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4542                                         NULL);
4543         if (wps_ie == NULL) {
4544                 wpas_p2p_scan_res_join(wpa_s, NULL);
4545                 return;
4546         }
4547
4548         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4549         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4550         if (ies == NULL) {
4551                 wpabuf_free(wps_ie);
4552                 wpas_p2p_scan_res_join(wpa_s, NULL);
4553                 return;
4554         }
4555         wpabuf_put_buf(ies, wps_ie);
4556         wpabuf_free(wps_ie);
4557
4558         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4559
4560         params.p2p_probe = 1;
4561         params.extra_ies = wpabuf_head(ies);
4562         params.extra_ies_len = wpabuf_len(ies);
4563
4564         if (!freq) {
4565                 int oper_freq;
4566                 /*
4567                  * If freq is not provided, check the operating freq of the GO
4568                  * and use a single channel scan on if possible.
4569                  */
4570                 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4571                                               wpa_s->pending_join_iface_addr);
4572                 if (oper_freq > 0)
4573                         freq = oper_freq;
4574         }
4575         if (freq > 0) {
4576                 freqs[0] = freq;
4577                 params.freqs = freqs;
4578         }
4579
4580         /*
4581          * Run a scan to update BSS table and start Provision Discovery once
4582          * the new scan results become available.
4583          */
4584         ret = wpa_drv_scan(wpa_s, &params);
4585         if (!ret) {
4586                 os_get_reltime(&wpa_s->scan_trigger_time);
4587                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
4588                 wpa_s->own_scan_requested = 1;
4589         }
4590
4591         wpabuf_free(ies);
4592
4593         if (ret) {
4594                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
4595                            "try again later");
4596                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4597                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4598                 wpas_p2p_check_join_scan_limit(wpa_s);
4599         }
4600 }
4601
4602
4603 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
4604 {
4605         struct wpa_supplicant *wpa_s = eloop_ctx;
4606         wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
4607 }
4608
4609
4610 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
4611                          const u8 *dev_addr, enum p2p_wps_method wps_method,
4612                          int auto_join, int op_freq,
4613                          const u8 *ssid, size_t ssid_len)
4614 {
4615         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
4616                    MACSTR " dev " MACSTR " op_freq=%d)%s",
4617                    MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
4618                    auto_join ? " (auto_join)" : "");
4619         if (ssid && ssid_len) {
4620                 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
4621                            wpa_ssid_txt(ssid, ssid_len));
4622         }
4623
4624         wpa_s->p2p_auto_pd = 0;
4625         wpa_s->p2p_auto_join = !!auto_join;
4626         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
4627         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
4628         wpa_s->pending_join_wps_method = wps_method;
4629
4630         /* Make sure we are not running find during connection establishment */
4631         wpas_p2p_stop_find(wpa_s);
4632
4633         wpa_s->p2p_join_scan_count = 0;
4634         wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
4635         return 0;
4636 }
4637
4638
4639 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
4640                                const u8 *ssid, size_t ssid_len)
4641 {
4642         struct wpa_supplicant *group;
4643         struct p2p_go_neg_results res;
4644         struct wpa_bss *bss;
4645
4646         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
4647         if (group == NULL)
4648                 return -1;
4649         if (group != wpa_s) {
4650                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
4651                           sizeof(group->p2p_pin));
4652                 group->p2p_wps_method = wpa_s->p2p_wps_method;
4653         } else {
4654                 /*
4655                  * Need to mark the current interface for p2p_group_formation
4656                  * when a separate group interface is not used. This is needed
4657                  * to allow p2p_cancel stop a pending p2p_connect-join.
4658                  * wpas_p2p_init_group_interface() addresses this for the case
4659                  * where a separate group interface is used.
4660                  */
4661                 wpa_s->global->p2p_group_formation = wpa_s;
4662         }
4663
4664         group->p2p_in_provisioning = 1;
4665         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
4666
4667         os_memset(&res, 0, sizeof(res));
4668         os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
4669         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
4670                   ETH_ALEN);
4671         res.wps_method = wpa_s->pending_join_wps_method;
4672         if (freq && ssid && ssid_len) {
4673                 res.freq = freq;
4674                 res.ssid_len = ssid_len;
4675                 os_memcpy(res.ssid, ssid, ssid_len);
4676         } else {
4677                 bss = wpa_bss_get_bssid_latest(wpa_s,
4678                                                wpa_s->pending_join_iface_addr);
4679                 if (bss) {
4680                         res.freq = bss->freq;
4681                         res.ssid_len = bss->ssid_len;
4682                         os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
4683                         wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
4684                                    bss->freq,
4685                                    wpa_ssid_txt(bss->ssid, bss->ssid_len));
4686                 }
4687         }
4688
4689         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
4690                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
4691                            "starting client");
4692                 wpa_drv_cancel_remain_on_channel(wpa_s);
4693                 wpa_s->off_channel_freq = 0;
4694                 wpa_s->roc_waiting_drv_freq = 0;
4695         }
4696         wpas_start_wps_enrollee(group, &res);
4697
4698         /*
4699          * Allow a longer timeout for join-a-running-group than normal 15
4700          * second group formation timeout since the GO may not have authorized
4701          * our connection yet.
4702          */
4703         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4704         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
4705                                wpa_s, NULL);
4706
4707         return 0;
4708 }
4709
4710
4711 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
4712                                 int *force_freq, int *pref_freq, int go)
4713 {
4714         struct wpa_used_freq_data *freqs;
4715         int res, best_freq, num_unused;
4716         unsigned int freq_in_use = 0, num, i;
4717
4718         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4719                           sizeof(struct wpa_used_freq_data));
4720         if (!freqs)
4721                 return -1;
4722
4723         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4724                                         wpa_s->num_multichan_concurrent);
4725
4726         /*
4727          * It is possible that the total number of used frequencies is bigger
4728          * than the number of frequencies used for P2P, so get the system wide
4729          * number of unused frequencies.
4730          */
4731         num_unused = wpas_p2p_num_unused_channels(wpa_s);
4732
4733         wpa_printf(MSG_DEBUG,
4734                    "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
4735                    freq, wpa_s->num_multichan_concurrent, num, num_unused);
4736
4737         if (freq > 0) {
4738                 int ret;
4739                 if (go)
4740                         ret = p2p_supported_freq(wpa_s->global->p2p, freq);
4741                 else
4742                         ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
4743                 if (!ret) {
4744                         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
4745                             ieee80211_is_dfs(freq)) {
4746                                 /*
4747                                  * If freq is a DFS channel and DFS is offloaded
4748                                  * to the driver, allow P2P GO to use it.
4749                                  */
4750                                 wpa_printf(MSG_DEBUG,
4751                                            "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver",
4752                                            freq);
4753                         } else {
4754                                 wpa_printf(MSG_DEBUG,
4755                                            "P2P: The forced channel (%u MHz) is not supported for P2P uses",
4756                                            freq);
4757                                 res = -3;
4758                                 goto exit_free;
4759                         }
4760                 }
4761
4762                 for (i = 0; i < num; i++) {
4763                         if (freqs[i].freq == freq)
4764                                 freq_in_use = 1;
4765                 }
4766
4767                 if (num_unused <= 0 && !freq_in_use) {
4768                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
4769                                    freq);
4770                         res = -2;
4771                         goto exit_free;
4772                 }
4773                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
4774                            "requested channel (%u MHz)", freq);
4775                 *force_freq = freq;
4776                 goto exit_ok;
4777         }
4778
4779         best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
4780
4781         /* We have a candidate frequency to use */
4782         if (best_freq > 0) {
4783                 if (*pref_freq == 0 && num_unused > 0) {
4784                         wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
4785                                    best_freq);
4786                         *pref_freq = best_freq;
4787                 } else {
4788                         wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
4789                                    best_freq);
4790                         *force_freq = best_freq;
4791                 }
4792         } else if (num_unused > 0) {
4793                 wpa_printf(MSG_DEBUG,
4794                            "P2P: Current operating channels are not available for P2P. Try to use another channel");
4795                 *force_freq = 0;
4796         } else {
4797                 wpa_printf(MSG_DEBUG,
4798                            "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
4799                 res = -2;
4800                 goto exit_free;
4801         }
4802
4803 exit_ok:
4804         res = 0;
4805 exit_free:
4806         os_free(freqs);
4807         return res;
4808 }
4809
4810
4811 /**
4812  * wpas_p2p_connect - Request P2P Group Formation to be started
4813  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4814  * @peer_addr: Address of the peer P2P Device
4815  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
4816  * @persistent_group: Whether to create a persistent group
4817  * @auto_join: Whether to select join vs. GO Negotiation automatically
4818  * @join: Whether to join an existing group (as a client) instead of starting
4819  *      Group Owner negotiation; @peer_addr is BSSID in that case
4820  * @auth: Whether to only authorize the connection instead of doing that and
4821  *      initiating Group Owner negotiation
4822  * @go_intent: GO Intent or -1 to use default
4823  * @freq: Frequency for the group or 0 for auto-selection
4824  * @persistent_id: Persistent group credentials to use for forcing GO
4825  *      parameters or -1 to generate new values (SSID/passphrase)
4826  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
4827  *      interoperability workaround when initiating group formation
4828  * @ht40: Start GO with 40 MHz channel width
4829  * @vht:  Start GO with VHT support
4830  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
4831  *      failure, -2 on failure due to channel not currently available,
4832  *      -3 if forced channel is not supported
4833  */
4834 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4835                      const char *pin, enum p2p_wps_method wps_method,
4836                      int persistent_group, int auto_join, int join, int auth,
4837                      int go_intent, int freq, int persistent_id, int pd,
4838                      int ht40, int vht)
4839 {
4840         int force_freq = 0, pref_freq = 0;
4841         int ret = 0, res;
4842         enum wpa_driver_if_type iftype;
4843         const u8 *if_addr;
4844         struct wpa_ssid *ssid = NULL;
4845
4846         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4847                 return -1;
4848
4849         if (persistent_id >= 0) {
4850                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
4851                 if (ssid == NULL || ssid->disabled != 2 ||
4852                     ssid->mode != WPAS_MODE_P2P_GO)
4853                         return -1;
4854         }
4855
4856         os_free(wpa_s->global->add_psk);
4857         wpa_s->global->add_psk = NULL;
4858
4859         wpa_s->global->p2p_fail_on_wps_complete = 0;
4860         wpa_s->global->pending_p2ps_group = 0;
4861
4862         if (go_intent < 0)
4863                 go_intent = wpa_s->conf->p2p_go_intent;
4864
4865         if (!auth)
4866                 wpa_s->p2p_long_listen = 0;
4867
4868         wpa_s->p2p_wps_method = wps_method;
4869         wpa_s->p2p_persistent_group = !!persistent_group;
4870         wpa_s->p2p_persistent_id = persistent_id;
4871         wpa_s->p2p_go_intent = go_intent;
4872         wpa_s->p2p_connect_freq = freq;
4873         wpa_s->p2p_fallback_to_go_neg = 0;
4874         wpa_s->p2p_pd_before_go_neg = !!pd;
4875         wpa_s->p2p_go_ht40 = !!ht40;
4876         wpa_s->p2p_go_vht = !!vht;
4877
4878         if (pin)
4879                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
4880         else if (wps_method == WPS_PIN_DISPLAY) {
4881                 ret = wps_generate_pin();
4882                 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin),
4883                                   "%08d", ret);
4884                 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res))
4885                         wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0';
4886                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
4887                            wpa_s->p2p_pin);
4888         } else
4889                 wpa_s->p2p_pin[0] = '\0';
4890
4891         if (join || auto_join) {
4892                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
4893                 if (auth) {
4894                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
4895                                    "connect a running group from " MACSTR,
4896                                    MAC2STR(peer_addr));
4897                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
4898                         return ret;
4899                 }
4900                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
4901                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
4902                                            iface_addr) < 0) {
4903                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
4904                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
4905                                          dev_addr);
4906                 }
4907                 if (auto_join) {
4908                         os_get_reltime(&wpa_s->p2p_auto_started);
4909                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
4910                                    "%ld.%06ld",
4911                                    wpa_s->p2p_auto_started.sec,
4912                                    wpa_s->p2p_auto_started.usec);
4913                 }
4914                 wpa_s->user_initiated_pd = 1;
4915                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
4916                                   auto_join, freq, NULL, 0) < 0)
4917                         return -1;
4918                 return ret;
4919         }
4920
4921         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
4922                                    go_intent == 15);
4923         if (res)
4924                 return res;
4925         wpas_p2p_set_own_freq_preference(wpa_s,
4926                                          force_freq ? force_freq : pref_freq);
4927
4928         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
4929
4930         if (wpa_s->create_p2p_iface) {
4931                 /* Prepare to add a new interface for the group */
4932                 iftype = WPA_IF_P2P_GROUP;
4933                 if (go_intent == 15)
4934                         iftype = WPA_IF_P2P_GO;
4935                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
4936                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
4937                                    "interface for the group");
4938                         return -1;
4939                 }
4940
4941                 if_addr = wpa_s->pending_interface_addr;
4942         } else
4943                 if_addr = wpa_s->own_addr;
4944
4945         if (auth) {
4946                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
4947                                          go_intent, if_addr,
4948                                          force_freq, persistent_group, ssid,
4949                                          pref_freq) < 0)
4950                         return -1;
4951                 return ret;
4952         }
4953
4954         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
4955                                   go_intent, if_addr, force_freq,
4956                                   persistent_group, ssid, pref_freq) < 0) {
4957                 if (wpa_s->create_p2p_iface)
4958                         wpas_p2p_remove_pending_group_interface(wpa_s);
4959                 return -1;
4960         }
4961         return ret;
4962 }
4963
4964
4965 /**
4966  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
4967  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4968  * @freq: Frequency of the channel in MHz
4969  * @duration: Duration of the stay on the channel in milliseconds
4970  *
4971  * This callback is called when the driver indicates that it has started the
4972  * requested remain-on-channel duration.
4973  */
4974 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
4975                                    unsigned int freq, unsigned int duration)
4976 {
4977         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4978                 return;
4979         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)",
4980                    wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
4981                    wpa_s->roc_waiting_drv_freq, freq, duration);
4982         if (wpa_s->off_channel_freq &&
4983             wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
4984                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
4985                               wpa_s->pending_listen_duration);
4986                 wpa_s->pending_listen_freq = 0;
4987         } else {
4988                 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
4989                            wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
4990                            freq, duration);
4991         }
4992 }
4993
4994
4995 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout)
4996 {
4997         /* Limit maximum Listen state time based on driver limitation. */
4998         if (timeout > wpa_s->max_remain_on_chan)
4999                 timeout = wpa_s->max_remain_on_chan;
5000
5001         return p2p_listen(wpa_s->global->p2p, timeout);
5002 }
5003
5004
5005 /**
5006  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
5007  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5008  * @freq: Frequency of the channel in MHz
5009  *
5010  * This callback is called when the driver indicates that a remain-on-channel
5011  * operation has been completed, i.e., the duration on the requested channel
5012  * has timed out.
5013  */
5014 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5015                                           unsigned int freq)
5016 {
5017         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
5018                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
5019                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
5020         wpas_p2p_listen_work_done(wpa_s);
5021         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5022                 return;
5023         if (wpa_s->p2p_long_listen > 0)
5024                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
5025         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
5026                 return; /* P2P module started a new operation */
5027         if (offchannel_pending_action_tx(wpa_s))
5028                 return;
5029         if (wpa_s->p2p_long_listen > 0) {
5030                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
5031                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
5032         } else {
5033                 /*
5034                  * When listen duration is over, stop listen & update p2p_state
5035                  * to IDLE.
5036                  */
5037                 p2p_stop_listen(wpa_s->global->p2p);
5038         }
5039 }
5040
5041
5042 /**
5043  * wpas_p2p_group_remove - Remove a P2P group
5044  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5045  * @ifname: Network interface name of the group interface or "*" to remove all
5046  *      groups
5047  * Returns: 0 on success, -1 on failure
5048  *
5049  * This function is used to remove a P2P group. This can be used to disconnect
5050  * from a group in which the local end is a P2P Client or to end a P2P Group in
5051  * case the local end is the Group Owner. If a virtual network interface was
5052  * created for this group, that interface will be removed. Otherwise, only the
5053  * configured P2P group network will be removed from the interface.
5054  */
5055 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
5056 {
5057         struct wpa_global *global = wpa_s->global;
5058         struct wpa_supplicant *calling_wpa_s = wpa_s;
5059
5060         if (os_strcmp(ifname, "*") == 0) {
5061                 struct wpa_supplicant *prev;
5062                 wpa_s = global->ifaces;
5063                 while (wpa_s) {
5064                         prev = wpa_s;
5065                         wpa_s = wpa_s->next;
5066                         if (prev->p2p_group_interface !=
5067                             NOT_P2P_GROUP_INTERFACE ||
5068                             (prev->current_ssid &&
5069                              prev->current_ssid->p2p_group))
5070                                 wpas_p2p_disconnect_safely(prev, calling_wpa_s);
5071                 }
5072                 return 0;
5073         }
5074
5075         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5076                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5077                         break;
5078         }
5079
5080         return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s);
5081 }
5082
5083
5084 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
5085 {
5086         unsigned int r;
5087
5088         if (freq == 2) {
5089                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
5090                            "band");
5091                 if (wpa_s->best_24_freq > 0 &&
5092                     p2p_supported_freq_go(wpa_s->global->p2p,
5093                                           wpa_s->best_24_freq)) {
5094                         freq = wpa_s->best_24_freq;
5095                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
5096                                    "channel: %d MHz", freq);
5097                 } else {
5098                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5099                                 return -1;
5100                         freq = 2412 + (r % 3) * 25;
5101                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
5102                                    "channel: %d MHz", freq);
5103                 }
5104         }
5105
5106         if (freq == 5) {
5107                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
5108                            "band");
5109                 if (wpa_s->best_5_freq > 0 &&
5110                     p2p_supported_freq_go(wpa_s->global->p2p,
5111                                        wpa_s->best_5_freq)) {
5112                         freq = wpa_s->best_5_freq;
5113                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
5114                                    "channel: %d MHz", freq);
5115                 } else {
5116                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5117                                 return -1;
5118                         freq = 5180 + (r % 4) * 20;
5119                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5120                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
5121                                            "5 GHz channel for P2P group");
5122                                 return -1;
5123                         }
5124                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
5125                                    "channel: %d MHz", freq);
5126                 }
5127         }
5128
5129         if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5130                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5131                     ieee80211_is_dfs(freq)) {
5132                         /*
5133                          * If freq is a DFS channel and DFS is offloaded to the
5134                          * driver, allow P2P GO to use it.
5135                          */
5136                         wpa_printf(MSG_DEBUG, "P2P: "
5137                                    "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded",
5138                                    __func__, freq);
5139                         return freq;
5140                 }
5141                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
5142                            "(%u MHz) is not supported for P2P uses",
5143                            freq);
5144                 return -1;
5145         }
5146
5147         return freq;
5148 }
5149
5150
5151 static int wpas_p2p_select_freq_no_pref(struct wpa_supplicant *wpa_s,
5152                                         struct p2p_go_neg_results *params,
5153                                         const struct p2p_channels *channels)
5154 {
5155         unsigned int i, r;
5156
5157         /* first try some random selection of the social channels */
5158         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5159                 return -1;
5160
5161         for (i = 0; i < 3; i++) {
5162                 params->freq = 2412 + ((r + i) % 3) * 25;
5163                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5164                     freq_included(channels, params->freq) &&
5165                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5166                         goto out;
5167         }
5168
5169         /* try all channels in reg. class 81 */
5170         for (i = 0; i < 11; i++) {
5171                 params->freq = 2412 + i * 5;
5172                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5173                     freq_included(channels, params->freq) &&
5174                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5175                         goto out;
5176         }
5177
5178         /* try all channels in operating class 115 */
5179         for (i = 0; i < 4; i++) {
5180                 params->freq = 5180 + i * 20;
5181                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5182                     freq_included(channels, params->freq) &&
5183                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5184                         goto out;
5185         }
5186
5187         /* try all channels in operating class 124 */
5188         for (i = 0; i < 4; i++) {
5189                 params->freq = 5745 + i * 20;
5190                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5191                     freq_included(channels, params->freq) &&
5192                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5193                         goto out;
5194         }
5195
5196         /* try social channel class 180 channel 2 */
5197         params->freq = 58320 + 1 * 2160;
5198         if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5199             freq_included(channels, params->freq) &&
5200             p2p_supported_freq(wpa_s->global->p2p, params->freq))
5201                 goto out;
5202
5203         /* try all channels in reg. class 180 */
5204         for (i = 0; i < 4; i++) {
5205                 params->freq = 58320 + i * 2160;
5206                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5207                     freq_included(channels, params->freq) &&
5208                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5209                         goto out;
5210         }
5211
5212         wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed");
5213         return -1;
5214 out:
5215         wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)",
5216                    params->freq);
5217         return 0;
5218 }
5219
5220
5221 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
5222                                    struct p2p_go_neg_results *params,
5223                                    int freq, int ht40, int vht,
5224                                    const struct p2p_channels *channels)
5225 {
5226         struct wpa_used_freq_data *freqs;
5227         unsigned int pref_freq, cand_freq;
5228         unsigned int num, i;
5229
5230         os_memset(params, 0, sizeof(*params));
5231         params->role_go = 1;
5232         params->ht40 = ht40;
5233         params->vht = vht;
5234         if (freq) {
5235                 if (!freq_included(channels, freq)) {
5236                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
5237                                    "accepted", freq);
5238                         return -1;
5239                 }
5240                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced "
5241                            "frequency %d MHz", freq);
5242                 params->freq = freq;
5243         } else if (wpa_s->conf->p2p_oper_reg_class == 81 &&
5244                    wpa_s->conf->p2p_oper_channel >= 1 &&
5245                    wpa_s->conf->p2p_oper_channel <= 11 &&
5246                    freq_included(channels,
5247                                  2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
5248                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
5249                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5250                            "frequency %d MHz", params->freq);
5251         } else if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
5252                     wpa_s->conf->p2p_oper_reg_class == 116 ||
5253                     wpa_s->conf->p2p_oper_reg_class == 117 ||
5254                     wpa_s->conf->p2p_oper_reg_class == 124 ||
5255                     wpa_s->conf->p2p_oper_reg_class == 125 ||
5256                     wpa_s->conf->p2p_oper_reg_class == 126 ||
5257                     wpa_s->conf->p2p_oper_reg_class == 127) &&
5258                    freq_included(channels,
5259                                  5000 + 5 * wpa_s->conf->p2p_oper_channel)) {
5260                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
5261                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5262                            "frequency %d MHz", params->freq);
5263         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5264                    wpa_s->best_overall_freq > 0 &&
5265                    p2p_supported_freq_go(wpa_s->global->p2p,
5266                                          wpa_s->best_overall_freq) &&
5267                    freq_included(channels, wpa_s->best_overall_freq)) {
5268                 params->freq = wpa_s->best_overall_freq;
5269                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
5270                            "channel %d MHz", params->freq);
5271         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5272                    wpa_s->best_24_freq > 0 &&
5273                    p2p_supported_freq_go(wpa_s->global->p2p,
5274                                          wpa_s->best_24_freq) &&
5275                    freq_included(channels, wpa_s->best_24_freq)) {
5276                 params->freq = wpa_s->best_24_freq;
5277                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
5278                            "channel %d MHz", params->freq);
5279         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5280                    wpa_s->best_5_freq > 0 &&
5281                    p2p_supported_freq_go(wpa_s->global->p2p,
5282                                          wpa_s->best_5_freq) &&
5283                    freq_included(channels, wpa_s->best_5_freq)) {
5284                 params->freq = wpa_s->best_5_freq;
5285                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
5286                            "channel %d MHz", params->freq);
5287         } else if ((pref_freq = p2p_get_pref_freq(wpa_s->global->p2p,
5288                                                   channels))) {
5289                 params->freq = pref_freq;
5290                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
5291                            "channels", params->freq);
5292         } else {
5293                 /* no preference, select some channel */
5294                 if (wpas_p2p_select_freq_no_pref(wpa_s, params, channels) < 0)
5295                         return -1;
5296         }
5297
5298         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5299                           sizeof(struct wpa_used_freq_data));
5300         if (!freqs)
5301                 return -1;
5302
5303         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5304                                         wpa_s->num_multichan_concurrent);
5305
5306         cand_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5307
5308         /* First try the best used frequency if possible */
5309         if (!freq && cand_freq > 0 && freq_included(channels, cand_freq)) {
5310                 params->freq = cand_freq;
5311         } else if (!freq) {
5312                 /* Try any of the used frequencies */
5313                 for (i = 0; i < num; i++) {
5314                         if (freq_included(channels, freqs[i].freq)) {
5315                                 wpa_printf(MSG_DEBUG, "P2P: Force GO on a channel we are already using (%u MHz)",
5316                                            freqs[i].freq);
5317                                 params->freq = freqs[i].freq;
5318                                 break;
5319                         }
5320                 }
5321
5322                 if (i == num) {
5323                         if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5324                                 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using");
5325                                 os_free(freqs);
5326                                 return -1;
5327                         } else {
5328                                 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using. Use one of the free channels");
5329                         }
5330                 }
5331         } else {
5332                 for (i = 0; i < num; i++) {
5333                         if (freqs[i].freq == freq)
5334                                 break;
5335                 }
5336
5337                 if (i == num) {
5338                         if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5339                                 if (freq)
5340                                         wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on freq (%u MHz) as all the channels are in use", freq);
5341                                 os_free(freqs);
5342                                 return -1;
5343                         } else {
5344                                 wpa_printf(MSG_DEBUG, "P2P: Use one of the free channels");
5345                         }
5346                 }
5347         }
5348
5349         os_free(freqs);
5350         return 0;
5351 }
5352
5353
5354 static struct wpa_supplicant *
5355 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
5356                          int go)
5357 {
5358         struct wpa_supplicant *group_wpa_s;
5359
5360         if (!wpas_p2p_create_iface(wpa_s)) {
5361                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
5362                         "operations");
5363                 wpa_s->p2p_first_connection_timeout = 0;
5364                 return wpa_s;
5365         }
5366
5367         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
5368                                          WPA_IF_P2P_CLIENT) < 0) {
5369                 wpa_msg_global(wpa_s, MSG_ERROR,
5370                                "P2P: Failed to add group interface");
5371                 return NULL;
5372         }
5373         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
5374         if (group_wpa_s == NULL) {
5375                 wpa_msg_global(wpa_s, MSG_ERROR,
5376                                "P2P: Failed to initialize group interface");
5377                 wpas_p2p_remove_pending_group_interface(wpa_s);
5378                 return NULL;
5379         }
5380
5381         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
5382                 group_wpa_s->ifname);
5383         group_wpa_s->p2p_first_connection_timeout = 0;
5384         return group_wpa_s;
5385 }
5386
5387
5388 /**
5389  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
5390  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5391  * @persistent_group: Whether to create a persistent group
5392  * @freq: Frequency for the group or 0 to indicate no hardcoding
5393  * @ht40: Start GO with 40 MHz channel width
5394  * @vht:  Start GO with VHT support
5395  * Returns: 0 on success, -1 on failure
5396  *
5397  * This function creates a new P2P group with the local end as the Group Owner,
5398  * i.e., without using Group Owner Negotiation.
5399  */
5400 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
5401                        int freq, int ht40, int vht)
5402 {
5403         struct p2p_go_neg_results params;
5404
5405         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5406                 return -1;
5407
5408         os_free(wpa_s->global->add_psk);
5409         wpa_s->global->add_psk = NULL;
5410
5411         /* Make sure we are not running find during connection establishment */
5412         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
5413         wpas_p2p_stop_find_oper(wpa_s);
5414
5415         freq = wpas_p2p_select_go_freq(wpa_s, freq);
5416         if (freq < 0)
5417                 return -1;
5418
5419         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, NULL))
5420                 return -1;
5421         if (params.freq &&
5422             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
5423                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5424                     ieee80211_is_dfs(params.freq)) {
5425                         /*
5426                          * If freq is a DFS channel and DFS is offloaded to the
5427                          * driver, allow P2P GO to use it.
5428                          */
5429                         wpa_printf(MSG_DEBUG,
5430                                    "P2P: %s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to driver",
5431                                 __func__, params.freq);
5432                 } else {
5433                         wpa_printf(MSG_DEBUG,
5434                                    "P2P: The selected channel for GO (%u MHz) is not supported for P2P uses",
5435                                    params.freq);
5436                         return -1;
5437                 }
5438         }
5439         p2p_go_params(wpa_s->global->p2p, &params);
5440         params.persistent_group = persistent_group;
5441
5442         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
5443         if (wpa_s == NULL)
5444                 return -1;
5445         wpas_start_wps_go(wpa_s, &params, 0);
5446
5447         return 0;
5448 }
5449
5450
5451 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
5452                                  struct wpa_ssid *params, int addr_allocated,
5453                                  int freq)
5454 {
5455         struct wpa_ssid *ssid;
5456
5457         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
5458         if (wpa_s == NULL)
5459                 return -1;
5460         wpa_s->p2p_last_4way_hs_fail = NULL;
5461
5462         wpa_supplicant_ap_deinit(wpa_s);
5463
5464         ssid = wpa_config_add_network(wpa_s->conf);
5465         if (ssid == NULL)
5466                 return -1;
5467         wpa_config_set_network_defaults(ssid);
5468         ssid->temporary = 1;
5469         ssid->proto = WPA_PROTO_RSN;
5470         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
5471         ssid->group_cipher = WPA_CIPHER_CCMP;
5472         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
5473         ssid->ssid = os_malloc(params->ssid_len);
5474         if (ssid->ssid == NULL) {
5475                 wpa_config_remove_network(wpa_s->conf, ssid->id);
5476                 return -1;
5477         }
5478         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
5479         ssid->ssid_len = params->ssid_len;
5480         ssid->p2p_group = 1;
5481         ssid->export_keys = 1;
5482         if (params->psk_set) {
5483                 os_memcpy(ssid->psk, params->psk, 32);
5484                 ssid->psk_set = 1;
5485         }
5486         if (params->passphrase)
5487                 ssid->passphrase = os_strdup(params->passphrase);
5488
5489         wpa_s->show_group_started = 1;
5490         wpa_s->p2p_in_invitation = 1;
5491         wpa_s->p2p_invite_go_freq = freq;
5492
5493         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5494                              NULL);
5495         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5496                                wpas_p2p_group_formation_timeout,
5497                                wpa_s->parent, NULL);
5498         wpa_supplicant_select_network(wpa_s, ssid);
5499
5500         return 0;
5501 }
5502
5503
5504 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
5505                                   struct wpa_ssid *ssid, int addr_allocated,
5506                                   int force_freq, int neg_freq, int ht40,
5507                                   int vht, const struct p2p_channels *channels,
5508                                   int connection_timeout)
5509 {
5510         struct p2p_go_neg_results params;
5511         int go = 0, freq;
5512
5513         if (ssid->disabled != 2 || ssid->ssid == NULL)
5514                 return -1;
5515
5516         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
5517             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
5518                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
5519                            "already running");
5520                 if (go == 0 &&
5521                     eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5522                                          wpa_s->parent, NULL)) {
5523                         /*
5524                          * This can happen if Invitation Response frame was lost
5525                          * and the peer (GO of a persistent group) tries to
5526                          * invite us again. Reschedule the timeout to avoid
5527                          * terminating the wait for the connection too early
5528                          * since we now know that the peer is still trying to
5529                          * invite us instead of having already started the GO.
5530                          */
5531                         wpa_printf(MSG_DEBUG,
5532                                    "P2P: Reschedule group formation timeout since peer is still trying to invite us");
5533                         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5534                                                wpas_p2p_group_formation_timeout,
5535                                                wpa_s->parent, NULL);
5536                 }
5537                 return 0;
5538         }
5539
5540         os_free(wpa_s->global->add_psk);
5541         wpa_s->global->add_psk = NULL;
5542
5543         /* Make sure we are not running find during connection establishment */
5544         wpas_p2p_stop_find_oper(wpa_s);
5545
5546         wpa_s->p2p_fallback_to_go_neg = 0;
5547
5548         if (ssid->mode == WPAS_MODE_P2P_GO) {
5549                 if (force_freq > 0) {
5550                         freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
5551                         if (freq < 0)
5552                                 return -1;
5553                 } else {
5554                         freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
5555                         if (freq < 0 ||
5556                             (freq > 0 && !freq_included(channels, freq)))
5557                                 freq = 0;
5558                 }
5559         } else if (ssid->mode == WPAS_MODE_INFRA) {
5560                 freq = neg_freq;
5561                 if (freq <= 0 || !freq_included(channels, freq)) {
5562                         struct os_reltime now;
5563                         struct wpa_bss *bss =
5564                                 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid);
5565
5566                         os_get_reltime(&now);
5567                         if (bss &&
5568                             !os_reltime_expired(&now, &bss->last_update, 5) &&
5569                             freq_included(channels, bss->freq))
5570                                 freq = bss->freq;
5571                         else
5572                                 freq = 0;
5573                 }
5574
5575                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq);
5576         } else {
5577                 return -1;
5578         }
5579
5580         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, channels))
5581                 return -1;
5582
5583         params.role_go = 1;
5584         params.psk_set = ssid->psk_set;
5585         if (params.psk_set)
5586                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
5587         if (ssid->passphrase) {
5588                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
5589                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
5590                                    "persistent group");
5591                         return -1;
5592                 }
5593                 os_strlcpy(params.passphrase, ssid->passphrase,
5594                            sizeof(params.passphrase));
5595         }
5596         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
5597         params.ssid_len = ssid->ssid_len;
5598         params.persistent_group = 1;
5599
5600         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
5601         if (wpa_s == NULL)
5602                 return -1;
5603
5604         p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS);
5605
5606         wpa_s->p2p_first_connection_timeout = connection_timeout;
5607         wpas_start_wps_go(wpa_s, &params, 0);
5608
5609         return 0;
5610 }
5611
5612
5613 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
5614                                struct wpabuf *proberesp_ies)
5615 {
5616         struct wpa_supplicant *wpa_s = ctx;
5617         if (wpa_s->ap_iface) {
5618                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
5619                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
5620                         wpabuf_free(beacon_ies);
5621                         wpabuf_free(proberesp_ies);
5622                         return;
5623                 }
5624                 if (beacon_ies) {
5625                         wpabuf_free(hapd->p2p_beacon_ie);
5626                         hapd->p2p_beacon_ie = beacon_ies;
5627                 }
5628                 wpabuf_free(hapd->p2p_probe_resp_ie);
5629                 hapd->p2p_probe_resp_ie = proberesp_ies;
5630         } else {
5631                 wpabuf_free(beacon_ies);
5632                 wpabuf_free(proberesp_ies);
5633         }
5634         wpa_supplicant_ap_update_beacon(wpa_s);
5635 }
5636
5637
5638 static void wpas_p2p_idle_update(void *ctx, int idle)
5639 {
5640         struct wpa_supplicant *wpa_s = ctx;
5641         if (!wpa_s->ap_iface)
5642                 return;
5643         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
5644         if (idle) {
5645                 if (wpa_s->global->p2p_fail_on_wps_complete &&
5646                     wpa_s->p2p_in_provisioning) {
5647                         wpas_p2p_grpform_fail_after_wps(wpa_s);
5648                         return;
5649                 }
5650                 wpas_p2p_set_group_idle_timeout(wpa_s);
5651         } else
5652                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
5653 }
5654
5655
5656 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
5657                                        struct wpa_ssid *ssid)
5658 {
5659         struct p2p_group *group;
5660         struct p2p_group_config *cfg;
5661
5662         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5663                 return NULL;
5664
5665         cfg = os_zalloc(sizeof(*cfg));
5666         if (cfg == NULL)
5667                 return NULL;
5668
5669         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
5670                 cfg->persistent_group = 2;
5671         else if (ssid->p2p_persistent_group)
5672                 cfg->persistent_group = 1;
5673         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
5674         if (wpa_s->max_stations &&
5675             wpa_s->max_stations < wpa_s->conf->max_num_sta)
5676                 cfg->max_clients = wpa_s->max_stations;
5677         else
5678                 cfg->max_clients = wpa_s->conf->max_num_sta;
5679         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
5680         cfg->ssid_len = ssid->ssid_len;
5681         cfg->freq = ssid->frequency;
5682         cfg->cb_ctx = wpa_s;
5683         cfg->ie_update = wpas_p2p_ie_update;
5684         cfg->idle_update = wpas_p2p_idle_update;
5685
5686         group = p2p_group_init(wpa_s->global->p2p, cfg);
5687         if (group == NULL)
5688                 os_free(cfg);
5689         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
5690                 p2p_group_notif_formation_done(group);
5691         wpa_s->p2p_group = group;
5692         return group;
5693 }
5694
5695
5696 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5697                           int registrar)
5698 {
5699         struct wpa_ssid *ssid = wpa_s->current_ssid;
5700
5701         if (!wpa_s->p2p_in_provisioning) {
5702                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
5703                            "provisioning not in progress");
5704                 return;
5705         }
5706
5707         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
5708                 u8 go_dev_addr[ETH_ALEN];
5709                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
5710                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
5711                                           ssid->ssid_len);
5712                 /* Clear any stored provisioning info */
5713                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
5714         }
5715
5716         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5717                              NULL);
5718         wpa_s->p2p_go_group_formation_completed = 1;
5719         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
5720                 /*
5721                  * Use a separate timeout for initial data connection to
5722                  * complete to allow the group to be removed automatically if
5723                  * something goes wrong in this step before the P2P group idle
5724                  * timeout mechanism is taken into use.
5725                  */
5726                 wpa_dbg(wpa_s, MSG_DEBUG,
5727                         "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
5728                         P2P_MAX_INITIAL_CONN_WAIT);
5729                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5730                                        wpas_p2p_group_formation_timeout,
5731                                        wpa_s->parent, NULL);
5732         } else if (ssid) {
5733                 /*
5734                  * Use a separate timeout for initial data connection to
5735                  * complete to allow the group to be removed automatically if
5736                  * the client does not complete data connection successfully.
5737                  */
5738                 wpa_dbg(wpa_s, MSG_DEBUG,
5739                         "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
5740                         P2P_MAX_INITIAL_CONN_WAIT_GO);
5741                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
5742                                        wpas_p2p_group_formation_timeout,
5743                                        wpa_s->parent, NULL);
5744                 /*
5745                  * Complete group formation on first successful data connection
5746                  */
5747                 wpa_s->p2p_go_group_formation_completed = 0;
5748         }
5749         if (wpa_s->global->p2p)
5750                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
5751         wpas_group_formation_completed(wpa_s, 1);
5752 }
5753
5754
5755 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
5756                          struct wps_event_fail *fail)
5757 {
5758         if (!wpa_s->p2p_in_provisioning) {
5759                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
5760                            "provisioning not in progress");
5761                 return;
5762         }
5763
5764         if (wpa_s->go_params) {
5765                 p2p_clear_provisioning_info(
5766                         wpa_s->global->p2p,
5767                         wpa_s->go_params->peer_device_addr);
5768         }
5769
5770         wpas_notify_p2p_wps_failed(wpa_s, fail);
5771
5772         if (wpa_s == wpa_s->global->p2p_group_formation) {
5773                 /*
5774                  * Allow some time for the failed WPS negotiation exchange to
5775                  * complete, but remove the group since group formation cannot
5776                  * succeed after provisioning failure.
5777                  */
5778                 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
5779                 wpa_s->global->p2p_fail_on_wps_complete = 1;
5780                 eloop_deplete_timeout(0, 50000,
5781                                       wpas_p2p_group_formation_timeout,
5782                                       wpa_s->parent, NULL);
5783         }
5784 }
5785
5786
5787 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
5788 {
5789         if (!wpa_s->global->p2p_fail_on_wps_complete ||
5790             !wpa_s->p2p_in_provisioning)
5791                 return 0;
5792
5793         wpas_p2p_grpform_fail_after_wps(wpa_s);
5794
5795         return 1;
5796 }
5797
5798
5799 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5800                        const char *config_method,
5801                        enum wpas_p2p_prov_disc_use use,
5802                        struct p2ps_provision *p2ps_prov)
5803 {
5804         u16 config_methods;
5805
5806         wpa_s->global->pending_p2ps_group = 0;
5807         wpa_s->p2p_fallback_to_go_neg = 0;
5808         wpa_s->pending_pd_use = NORMAL_PD;
5809         if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) {
5810                 p2ps_prov->conncap = p2ps_group_capability(
5811                         wpa_s, P2PS_SETUP_NONE, p2ps_prov->role);
5812                 wpa_printf(MSG_DEBUG,
5813                            "P2P: %s conncap: %d - ASP parsed: %x %x %d %s",
5814                            __func__, p2ps_prov->conncap,
5815                            p2ps_prov->adv_id, p2ps_prov->conncap,
5816                            p2ps_prov->status, p2ps_prov->info);
5817
5818                 config_methods = 0;
5819         } else if (os_strncmp(config_method, "display", 7) == 0)
5820                 config_methods = WPS_CONFIG_DISPLAY;
5821         else if (os_strncmp(config_method, "keypad", 6) == 0)
5822                 config_methods = WPS_CONFIG_KEYPAD;
5823         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
5824                  os_strncmp(config_method, "pushbutton", 10) == 0)
5825                 config_methods = WPS_CONFIG_PUSHBUTTON;
5826         else {
5827                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
5828                 os_free(p2ps_prov);
5829                 return -1;
5830         }
5831
5832         if (use == WPAS_P2P_PD_AUTO) {
5833                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
5834                 wpa_s->pending_pd_config_methods = config_methods;
5835                 wpa_s->p2p_auto_pd = 1;
5836                 wpa_s->p2p_auto_join = 0;
5837                 wpa_s->pending_pd_before_join = 0;
5838                 wpa_s->auto_pd_scan_retry = 0;
5839                 wpas_p2p_stop_find(wpa_s);
5840                 wpa_s->p2p_join_scan_count = 0;
5841                 os_get_reltime(&wpa_s->p2p_auto_started);
5842                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
5843                            wpa_s->p2p_auto_started.sec,
5844                            wpa_s->p2p_auto_started.usec);
5845                 wpas_p2p_join_scan(wpa_s, NULL);
5846                 return 0;
5847         }
5848
5849         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) {
5850                 os_free(p2ps_prov);
5851                 return -1;
5852         }
5853
5854         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov,
5855                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
5856                                  0, 1);
5857 }
5858
5859
5860 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
5861                               char *end)
5862 {
5863         return p2p_scan_result_text(ies, ies_len, buf, end);
5864 }
5865
5866
5867 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
5868 {
5869         if (!offchannel_pending_action_tx(wpa_s))
5870                 return;
5871
5872         wpas_p2p_action_tx_clear(wpa_s);
5873
5874         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
5875                    "operation request");
5876         offchannel_clear_pending_action_tx(wpa_s);
5877 }
5878
5879
5880 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
5881                   enum p2p_discovery_type type,
5882                   unsigned int num_req_dev_types, const u8 *req_dev_types,
5883                   const u8 *dev_id, unsigned int search_delay,
5884                   u8 seek_cnt, const char **seek_string, int freq)
5885 {
5886         wpas_p2p_clear_pending_action_tx(wpa_s);
5887         wpa_s->p2p_long_listen = 0;
5888
5889         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
5890             wpa_s->p2p_in_provisioning)
5891                 return -1;
5892
5893         wpa_supplicant_cancel_sched_scan(wpa_s);
5894
5895         return p2p_find(wpa_s->global->p2p, timeout, type,
5896                         num_req_dev_types, req_dev_types, dev_id,
5897                         search_delay, seek_cnt, seek_string, freq);
5898 }
5899
5900
5901 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s,
5902                                             struct wpa_scan_results *scan_res)
5903 {
5904         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
5905
5906         if (wpa_s->p2p_scan_work) {
5907                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
5908                 wpa_s->p2p_scan_work = NULL;
5909                 radio_work_done(work);
5910         }
5911
5912         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5913                 return;
5914
5915         /*
5916          * Indicate that results have been processed so that the P2P module can
5917          * continue pending tasks.
5918          */
5919         p2p_scan_res_handled(wpa_s->global->p2p);
5920 }
5921
5922
5923 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
5924 {
5925         wpas_p2p_clear_pending_action_tx(wpa_s);
5926         wpa_s->p2p_long_listen = 0;
5927         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
5928         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5929
5930         if (wpa_s->global->p2p)
5931                 p2p_stop_find(wpa_s->global->p2p);
5932
5933         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
5934                 wpa_printf(MSG_DEBUG,
5935                            "P2P: Do not consider the scan results after stop_find");
5936                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search;
5937         }
5938 }
5939
5940
5941 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
5942 {
5943         wpas_p2p_stop_find_oper(wpa_s);
5944         if (!wpa_s->global->pending_group_iface_for_p2ps)
5945                 wpas_p2p_remove_pending_group_interface(wpa_s);
5946 }
5947
5948
5949 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
5950 {
5951         struct wpa_supplicant *wpa_s = eloop_ctx;
5952         wpa_s->p2p_long_listen = 0;
5953 }
5954
5955
5956 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
5957 {
5958         int res;
5959
5960         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5961                 return -1;
5962
5963         wpa_supplicant_cancel_sched_scan(wpa_s);
5964         wpas_p2p_clear_pending_action_tx(wpa_s);
5965
5966         if (timeout == 0) {
5967                 /*
5968                  * This is a request for unlimited Listen state. However, at
5969                  * least for now, this is mapped to a Listen state for one
5970                  * hour.
5971                  */
5972                 timeout = 3600;
5973         }
5974         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
5975         wpa_s->p2p_long_listen = 0;
5976
5977         /*
5978          * Stop previous find/listen operation to avoid trying to request a new
5979          * remain-on-channel operation while the driver is still running the
5980          * previous one.
5981          */
5982         if (wpa_s->global->p2p)
5983                 p2p_stop_find(wpa_s->global->p2p);
5984
5985         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
5986         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
5987                 wpa_s->p2p_long_listen = timeout * 1000;
5988                 eloop_register_timeout(timeout, 0,
5989                                        wpas_p2p_long_listen_timeout,
5990                                        wpa_s, NULL);
5991         }
5992
5993         return res;
5994 }
5995
5996
5997 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
5998                           u8 *buf, size_t len, int p2p_group)
5999 {
6000         struct wpabuf *p2p_ie;
6001         int ret;
6002
6003         if (wpa_s->global->p2p_disabled)
6004                 return -1;
6005         /*
6006          * Advertize mandatory cross connection capability even on
6007          * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP.
6008          */
6009         if (wpa_s->conf->p2p_disabled && p2p_group)
6010                 return -1;
6011         if (wpa_s->global->p2p == NULL)
6012                 return -1;
6013         if (bss == NULL)
6014                 return -1;
6015
6016         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
6017         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
6018                                p2p_group, p2p_ie);
6019         wpabuf_free(p2p_ie);
6020
6021         return ret;
6022 }
6023
6024
6025 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
6026                           const u8 *dst, const u8 *bssid,
6027                           const u8 *ie, size_t ie_len,
6028                           unsigned int rx_freq, int ssi_signal)
6029 {
6030         if (wpa_s->global->p2p_disabled)
6031                 return 0;
6032         if (wpa_s->global->p2p == NULL)
6033                 return 0;
6034
6035         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
6036                                  ie, ie_len, rx_freq)) {
6037         case P2P_PREQ_NOT_P2P:
6038                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
6039                                  ssi_signal);
6040                 /* fall through */
6041         case P2P_PREQ_MALFORMED:
6042         case P2P_PREQ_NOT_LISTEN:
6043         case P2P_PREQ_NOT_PROCESSED:
6044         default: /* make gcc happy */
6045                 return 0;
6046         case P2P_PREQ_PROCESSED:
6047                 return 1;
6048         }
6049 }
6050
6051
6052 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
6053                         const u8 *sa, const u8 *bssid,
6054                         u8 category, const u8 *data, size_t len, int freq)
6055 {
6056         if (wpa_s->global->p2p_disabled)
6057                 return;
6058         if (wpa_s->global->p2p == NULL)
6059                 return;
6060
6061         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
6062                       freq);
6063 }
6064
6065
6066 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
6067 {
6068         if (wpa_s->global->p2p_disabled)
6069                 return;
6070         if (wpa_s->global->p2p == NULL)
6071                 return;
6072
6073         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
6074 }
6075
6076
6077 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
6078 {
6079         p2p_group_deinit(wpa_s->p2p_group);
6080         wpa_s->p2p_group = NULL;
6081
6082         wpa_s->ap_configured_cb = NULL;
6083         wpa_s->ap_configured_cb_ctx = NULL;
6084         wpa_s->ap_configured_cb_data = NULL;
6085         wpa_s->connect_without_scan = NULL;
6086 }
6087
6088
6089 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
6090 {
6091         wpa_s->p2p_long_listen = 0;
6092
6093         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6094                 return -1;
6095
6096         return p2p_reject(wpa_s->global->p2p, addr);
6097 }
6098
6099
6100 /* Invite to reinvoke a persistent group */
6101 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6102                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
6103                     int ht40, int vht, int pref_freq)
6104 {
6105         enum p2p_invite_role role;
6106         u8 *bssid = NULL;
6107         int force_freq = 0;
6108         int res;
6109         int no_pref_freq_given = pref_freq == 0;
6110
6111         wpa_s->global->p2p_invite_group = NULL;
6112         if (peer_addr)
6113                 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
6114         else
6115                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
6116
6117         wpa_s->p2p_persistent_go_freq = freq;
6118         wpa_s->p2p_go_ht40 = !!ht40;
6119         if (ssid->mode == WPAS_MODE_P2P_GO) {
6120                 role = P2P_INVITE_ROLE_GO;
6121                 if (peer_addr == NULL) {
6122                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
6123                                    "address in invitation command");
6124                         return -1;
6125                 }
6126                 if (wpas_p2p_create_iface(wpa_s)) {
6127                         if (wpas_p2p_add_group_interface(wpa_s,
6128                                                          WPA_IF_P2P_GO) < 0) {
6129                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
6130                                            "allocate a new interface for the "
6131                                            "group");
6132                                 return -1;
6133                         }
6134                         bssid = wpa_s->pending_interface_addr;
6135                 } else
6136                         bssid = wpa_s->own_addr;
6137         } else {
6138                 role = P2P_INVITE_ROLE_CLIENT;
6139                 peer_addr = ssid->bssid;
6140         }
6141         wpa_s->pending_invite_ssid_id = ssid->id;
6142
6143         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6144                                    role == P2P_INVITE_ROLE_GO);
6145         if (res)
6146                 return res;
6147
6148         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6149                 return -1;
6150
6151         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
6152             no_pref_freq_given && pref_freq > 0 &&
6153             wpa_s->num_multichan_concurrent > 1 &&
6154             wpas_p2p_num_unused_channels(wpa_s) > 0) {
6155                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
6156                            pref_freq);
6157                 pref_freq = 0;
6158         }
6159
6160         /*
6161          * Stop any find/listen operations before invitation and possibly
6162          * connection establishment.
6163          */
6164         wpas_p2p_stop_find_oper(wpa_s);
6165
6166         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6167                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
6168                           1, pref_freq, -1);
6169 }
6170
6171
6172 /* Invite to join an active group */
6173 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
6174                           const u8 *peer_addr, const u8 *go_dev_addr)
6175 {
6176         struct wpa_global *global = wpa_s->global;
6177         enum p2p_invite_role role;
6178         u8 *bssid = NULL;
6179         struct wpa_ssid *ssid;
6180         int persistent;
6181         int freq = 0, force_freq = 0, pref_freq = 0;
6182         int res;
6183
6184         wpa_s->p2p_persistent_go_freq = 0;
6185         wpa_s->p2p_go_ht40 = 0;
6186         wpa_s->p2p_go_vht = 0;
6187
6188         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6189                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
6190                         break;
6191         }
6192         if (wpa_s == NULL) {
6193                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
6194                 return -1;
6195         }
6196
6197         ssid = wpa_s->current_ssid;
6198         if (ssid == NULL) {
6199                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
6200                            "invitation");
6201                 return -1;
6202         }
6203
6204         wpa_s->global->p2p_invite_group = wpa_s;
6205         persistent = ssid->p2p_persistent_group &&
6206                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
6207                                         ssid->ssid, ssid->ssid_len);
6208
6209         if (ssid->mode == WPAS_MODE_P2P_GO) {
6210                 role = P2P_INVITE_ROLE_ACTIVE_GO;
6211                 bssid = wpa_s->own_addr;
6212                 if (go_dev_addr == NULL)
6213                         go_dev_addr = wpa_s->global->p2p_dev_addr;
6214                 freq = ssid->frequency;
6215         } else {
6216                 role = P2P_INVITE_ROLE_CLIENT;
6217                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
6218                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
6219                                    "invite to current group");
6220                         return -1;
6221                 }
6222                 bssid = wpa_s->bssid;
6223                 if (go_dev_addr == NULL &&
6224                     !is_zero_ether_addr(wpa_s->go_dev_addr))
6225                         go_dev_addr = wpa_s->go_dev_addr;
6226                 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6227                         (int) wpa_s->assoc_freq;
6228         }
6229         wpa_s->parent->pending_invite_ssid_id = -1;
6230
6231         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6232                 return -1;
6233
6234         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6235                                    role == P2P_INVITE_ROLE_ACTIVE_GO);
6236         if (res)
6237                 return res;
6238         wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
6239
6240         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6241                           ssid->ssid, ssid->ssid_len, force_freq,
6242                           go_dev_addr, persistent, pref_freq, -1);
6243 }
6244
6245
6246 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
6247 {
6248         struct wpa_ssid *ssid = wpa_s->current_ssid;
6249         u8 go_dev_addr[ETH_ALEN];
6250         int network_id = -1;
6251         int persistent;
6252         int freq;
6253         u8 ip[3 * 4];
6254         char ip_addr[100];
6255
6256         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
6257                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6258                                      wpa_s->parent, NULL);
6259         }
6260
6261         if (!wpa_s->show_group_started || !ssid)
6262                 return;
6263
6264         wpa_s->show_group_started = 0;
6265
6266         os_memset(go_dev_addr, 0, ETH_ALEN);
6267         if (ssid->bssid_set)
6268                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
6269         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6270                                                ssid->ssid_len);
6271         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
6272
6273         if (wpa_s->global->p2p_group_formation == wpa_s)
6274                 wpa_s->global->p2p_group_formation = NULL;
6275
6276         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6277                 (int) wpa_s->assoc_freq;
6278
6279         ip_addr[0] = '\0';
6280         if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
6281                 int res;
6282
6283                 res = os_snprintf(ip_addr, sizeof(ip_addr),
6284                                   " ip_addr=%u.%u.%u.%u "
6285                                   "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
6286                                   ip[0], ip[1], ip[2], ip[3],
6287                                   ip[4], ip[5], ip[6], ip[7],
6288                                   ip[8], ip[9], ip[10], ip[11]);
6289                 if (os_snprintf_error(sizeof(ip_addr), res))
6290                         ip_addr[0] = '\0';
6291         }
6292
6293         wpas_p2p_group_started(wpa_s, 0, ssid, freq,
6294                                ssid->passphrase == NULL && ssid->psk_set ?
6295                                ssid->psk : NULL,
6296                                ssid->passphrase, go_dev_addr, persistent,
6297                                ip_addr);
6298
6299         if (persistent)
6300                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
6301                                                              ssid, go_dev_addr);
6302         if (network_id < 0)
6303                 network_id = ssid->id;
6304         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
6305 }
6306
6307
6308 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
6309                           u32 interval1, u32 duration2, u32 interval2)
6310 {
6311         int ret;
6312
6313         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6314                 return -1;
6315
6316         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
6317             wpa_s->current_ssid == NULL ||
6318             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
6319                 return -1;
6320
6321         ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
6322                                wpa_s->own_addr, wpa_s->assoc_freq,
6323                                duration1, interval1, duration2, interval2);
6324         if (ret == 0)
6325                 wpa_s->waiting_presence_resp = 1;
6326
6327         return ret;
6328 }
6329
6330
6331 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
6332                         unsigned int interval)
6333 {
6334         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6335                 return -1;
6336
6337         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
6338 }
6339
6340
6341 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
6342 {
6343         if (wpa_s->current_ssid == NULL) {
6344                 /*
6345                  * current_ssid can be cleared when P2P client interface gets
6346                  * disconnected, so assume this interface was used as P2P
6347                  * client.
6348                  */
6349                 return 1;
6350         }
6351         return wpa_s->current_ssid->p2p_group &&
6352                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
6353 }
6354
6355
6356 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
6357 {
6358         struct wpa_supplicant *wpa_s = eloop_ctx;
6359
6360         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
6361                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
6362                            "disabled");
6363                 return;
6364         }
6365
6366         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
6367                    "group");
6368         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
6369 }
6370
6371
6372 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
6373 {
6374         int timeout;
6375
6376         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6377                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6378
6379         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6380                 return;
6381
6382         timeout = wpa_s->conf->p2p_group_idle;
6383         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
6384             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
6385             timeout = P2P_MAX_CLIENT_IDLE;
6386
6387         if (timeout == 0)
6388                 return;
6389
6390         if (timeout < 0) {
6391                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
6392                         timeout = 0; /* special client mode no-timeout */
6393                 else
6394                         return;
6395         }
6396
6397         if (wpa_s->p2p_in_provisioning) {
6398                 /*
6399                  * Use the normal group formation timeout during the
6400                  * provisioning phase to avoid terminating this process too
6401                  * early due to group idle timeout.
6402                  */
6403                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6404                            "during provisioning");
6405                 return;
6406         }
6407
6408         if (wpa_s->show_group_started) {
6409                 /*
6410                  * Use the normal group formation timeout between the end of
6411                  * the provisioning phase and completion of 4-way handshake to
6412                  * avoid terminating this process too early due to group idle
6413                  * timeout.
6414                  */
6415                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6416                            "while waiting for initial 4-way handshake to "
6417                            "complete");
6418                 return;
6419         }
6420
6421         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
6422                    timeout);
6423         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
6424                                wpa_s, NULL);
6425 }
6426
6427
6428 /* Returns 1 if the interface was removed */
6429 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6430                           u16 reason_code, const u8 *ie, size_t ie_len,
6431                           int locally_generated)
6432 {
6433         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6434                 return 0;
6435
6436         if (!locally_generated)
6437                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6438                                  ie_len);
6439
6440         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
6441             wpa_s->current_ssid &&
6442             wpa_s->current_ssid->p2p_group &&
6443             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
6444                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
6445                            "session is ending");
6446                 if (wpas_p2p_group_delete(wpa_s,
6447                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
6448                     > 0)
6449                         return 1;
6450         }
6451
6452         return 0;
6453 }
6454
6455
6456 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6457                              u16 reason_code, const u8 *ie, size_t ie_len,
6458                              int locally_generated)
6459 {
6460         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6461                 return;
6462
6463         if (!locally_generated)
6464                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6465                                    ie_len);
6466 }
6467
6468
6469 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
6470 {
6471         struct p2p_data *p2p = wpa_s->global->p2p;
6472
6473         if (p2p == NULL)
6474                 return;
6475
6476         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
6477                 return;
6478
6479         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
6480                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
6481
6482         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
6483                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
6484
6485         if (wpa_s->wps &&
6486             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
6487                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
6488
6489         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
6490                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
6491
6492         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
6493                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
6494                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
6495                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
6496                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
6497         }
6498
6499         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
6500                 p2p_set_sec_dev_types(p2p,
6501                                       (void *) wpa_s->conf->sec_device_type,
6502                                       wpa_s->conf->num_sec_device_types);
6503
6504         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
6505                 int i;
6506                 p2p_remove_wps_vendor_extensions(p2p);
6507                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
6508                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
6509                                 continue;
6510                         p2p_add_wps_vendor_extension(
6511                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
6512                 }
6513         }
6514
6515         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
6516             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
6517                 char country[3];
6518                 country[0] = wpa_s->conf->country[0];
6519                 country[1] = wpa_s->conf->country[1];
6520                 country[2] = 0x04;
6521                 p2p_set_country(p2p, country);
6522         }
6523
6524         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
6525                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
6526                                      wpa_s->conf->p2p_ssid_postfix ?
6527                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
6528                                      0);
6529         }
6530
6531         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
6532                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
6533
6534         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
6535                 u8 reg_class, channel;
6536                 int ret;
6537                 unsigned int r;
6538                 u8 channel_forced;
6539
6540                 if (wpa_s->conf->p2p_listen_reg_class &&
6541                     wpa_s->conf->p2p_listen_channel) {
6542                         reg_class = wpa_s->conf->p2p_listen_reg_class;
6543                         channel = wpa_s->conf->p2p_listen_channel;
6544                         channel_forced = 1;
6545                 } else {
6546                         reg_class = 81;
6547                         /*
6548                          * Pick one of the social channels randomly as the
6549                          * listen channel.
6550                          */
6551                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
6552                                 channel = 1;
6553                         else
6554                                 channel = 1 + (r % 3) * 5;
6555                         channel_forced = 0;
6556                 }
6557                 ret = p2p_set_listen_channel(p2p, reg_class, channel,
6558                                              channel_forced);
6559                 if (ret)
6560                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
6561                                    "failed: %d", ret);
6562         }
6563         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
6564                 u8 op_reg_class, op_channel, cfg_op_channel;
6565                 int ret = 0;
6566                 unsigned int r;
6567                 if (wpa_s->conf->p2p_oper_reg_class &&
6568                     wpa_s->conf->p2p_oper_channel) {
6569                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
6570                         op_channel = wpa_s->conf->p2p_oper_channel;
6571                         cfg_op_channel = 1;
6572                 } else {
6573                         op_reg_class = 81;
6574                         /*
6575                          * Use random operation channel from (1, 6, 11)
6576                          *if no other preference is indicated.
6577                          */
6578                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
6579                                 op_channel = 1;
6580                         else
6581                                 op_channel = 1 + (r % 3) * 5;
6582                         cfg_op_channel = 0;
6583                 }
6584                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
6585                                            cfg_op_channel);
6586                 if (ret)
6587                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
6588                                    "failed: %d", ret);
6589         }
6590
6591         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
6592                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
6593                                       wpa_s->conf->p2p_pref_chan) < 0) {
6594                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
6595                                    "update failed");
6596                 }
6597
6598                 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
6599                         wpa_printf(MSG_ERROR, "P2P: No GO channel list "
6600                                    "update failed");
6601                 }
6602         }
6603
6604         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN)
6605                 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len);
6606 }
6607
6608
6609 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
6610                      int duration)
6611 {
6612         if (!wpa_s->ap_iface)
6613                 return -1;
6614         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
6615                                    duration);
6616 }
6617
6618
6619 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
6620 {
6621         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6622                 return -1;
6623
6624         wpa_s->global->cross_connection = enabled;
6625         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
6626
6627         if (!enabled) {
6628                 struct wpa_supplicant *iface;
6629
6630                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
6631                 {
6632                         if (iface->cross_connect_enabled == 0)
6633                                 continue;
6634
6635                         iface->cross_connect_enabled = 0;
6636                         iface->cross_connect_in_use = 0;
6637                         wpa_msg_global(iface->parent, MSG_INFO,
6638                                        P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6639                                        iface->ifname,
6640                                        iface->cross_connect_uplink);
6641                 }
6642         }
6643
6644         return 0;
6645 }
6646
6647
6648 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
6649 {
6650         struct wpa_supplicant *iface;
6651
6652         if (!uplink->global->cross_connection)
6653                 return;
6654
6655         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
6656                 if (!iface->cross_connect_enabled)
6657                         continue;
6658                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
6659                     0)
6660                         continue;
6661                 if (iface->ap_iface == NULL)
6662                         continue;
6663                 if (iface->cross_connect_in_use)
6664                         continue;
6665
6666                 iface->cross_connect_in_use = 1;
6667                 wpa_msg_global(iface->parent, MSG_INFO,
6668                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
6669                                iface->ifname, iface->cross_connect_uplink);
6670         }
6671 }
6672
6673
6674 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
6675 {
6676         struct wpa_supplicant *iface;
6677
6678         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
6679                 if (!iface->cross_connect_enabled)
6680                         continue;
6681                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
6682                     0)
6683                         continue;
6684                 if (!iface->cross_connect_in_use)
6685                         continue;
6686
6687                 wpa_msg_global(iface->parent, MSG_INFO,
6688                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6689                                iface->ifname, iface->cross_connect_uplink);
6690                 iface->cross_connect_in_use = 0;
6691         }
6692 }
6693
6694
6695 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
6696 {
6697         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
6698             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
6699             wpa_s->cross_connect_disallowed)
6700                 wpas_p2p_disable_cross_connect(wpa_s);
6701         else
6702                 wpas_p2p_enable_cross_connect(wpa_s);
6703         if (!wpa_s->ap_iface &&
6704             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6705                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6706 }
6707
6708
6709 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
6710 {
6711         wpas_p2p_disable_cross_connect(wpa_s);
6712         if (!wpa_s->ap_iface &&
6713             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
6714                                          wpa_s, NULL))
6715                 wpas_p2p_set_group_idle_timeout(wpa_s);
6716 }
6717
6718
6719 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
6720 {
6721         struct wpa_supplicant *iface;
6722
6723         if (!wpa_s->global->cross_connection)
6724                 return;
6725
6726         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
6727                 if (iface == wpa_s)
6728                         continue;
6729                 if (iface->drv_flags &
6730                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
6731                         continue;
6732                 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) &&
6733                     iface != wpa_s->parent)
6734                         continue;
6735
6736                 wpa_s->cross_connect_enabled = 1;
6737                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
6738                            sizeof(wpa_s->cross_connect_uplink));
6739                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
6740                            "%s to %s whenever uplink is available",
6741                            wpa_s->ifname, wpa_s->cross_connect_uplink);
6742
6743                 if (iface->ap_iface || iface->current_ssid == NULL ||
6744                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
6745                     iface->cross_connect_disallowed ||
6746                     iface->wpa_state != WPA_COMPLETED)
6747                         break;
6748
6749                 wpa_s->cross_connect_in_use = 1;
6750                 wpa_msg_global(wpa_s->parent, MSG_INFO,
6751                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
6752                                wpa_s->ifname, wpa_s->cross_connect_uplink);
6753                 break;
6754         }
6755 }
6756
6757
6758 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
6759 {
6760         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
6761             !wpa_s->p2p_in_provisioning)
6762                 return 0; /* not P2P client operation */
6763
6764         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
6765                    "session overlap");
6766         if (wpa_s != wpa_s->parent)
6767                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
6768         wpas_p2p_group_formation_failed(wpa_s);
6769         return 1;
6770 }
6771
6772
6773 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
6774 {
6775         struct wpa_supplicant *wpa_s = eloop_ctx;
6776         wpas_p2p_notif_pbc_overlap(wpa_s);
6777 }
6778
6779
6780 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
6781 {
6782         struct p2p_channels chan, cli_chan;
6783         struct wpa_supplicant *ifs;
6784
6785         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
6786                 return;
6787
6788         os_memset(&chan, 0, sizeof(chan));
6789         os_memset(&cli_chan, 0, sizeof(cli_chan));
6790         if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
6791                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
6792                            "channel list");
6793                 return;
6794         }
6795
6796         p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
6797
6798         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
6799                 int freq;
6800                 if (!ifs->current_ssid ||
6801                     !ifs->current_ssid->p2p_group ||
6802                     (ifs->current_ssid->mode != WPAS_MODE_P2P_GO &&
6803                      ifs->current_ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION))
6804                                 continue;
6805                 freq = ifs->current_ssid->frequency;
6806                 if (freq_included(&chan, freq)) {
6807                         wpa_dbg(ifs, MSG_DEBUG,
6808                                 "P2P GO operating frequency %d MHz in valid range",
6809                                 freq);
6810                         continue;
6811                 }
6812
6813                 wpa_dbg(ifs, MSG_DEBUG,
6814                         "P2P GO operating in invalid frequency %d MHz", freq);
6815                 /* TODO: Consider using CSA or removing the group within
6816                  * wpa_supplicant */
6817                 wpa_msg(ifs, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
6818         }
6819 }
6820
6821
6822 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
6823                                      struct wpa_scan_results *scan_res)
6824 {
6825         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6826 }
6827
6828
6829 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
6830 {
6831         struct wpa_global *global = wpa_s->global;
6832         int found = 0;
6833         const u8 *peer;
6834
6835         if (global->p2p == NULL)
6836                 return -1;
6837
6838         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
6839
6840         if (wpa_s->pending_interface_name[0] &&
6841             !is_zero_ether_addr(wpa_s->pending_interface_addr))
6842                 found = 1;
6843
6844         peer = p2p_get_go_neg_peer(global->p2p);
6845         if (peer) {
6846                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
6847                            MACSTR, MAC2STR(peer));
6848                 p2p_unauthorize(global->p2p, peer);
6849                 found = 1;
6850         }
6851
6852         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
6853                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
6854                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
6855                 found = 1;
6856         }
6857
6858         if (wpa_s->pending_pd_before_join) {
6859                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
6860                 wpa_s->pending_pd_before_join = 0;
6861                 found = 1;
6862         }
6863
6864         wpas_p2p_stop_find(wpa_s);
6865
6866         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6867                 if (wpa_s == global->p2p_group_formation &&
6868                     (wpa_s->p2p_in_provisioning ||
6869                      wpa_s->parent->pending_interface_type ==
6870                      WPA_IF_P2P_CLIENT)) {
6871                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
6872                                    "formation found - cancelling",
6873                                    wpa_s->ifname);
6874                         found = 1;
6875                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6876                                              wpa_s->parent, NULL);
6877                         if (wpa_s->p2p_in_provisioning) {
6878                                 wpas_group_formation_completed(wpa_s, 0);
6879                                 break;
6880                         }
6881                         wpas_p2p_group_delete(wpa_s,
6882                                               P2P_GROUP_REMOVAL_REQUESTED);
6883                         break;
6884                 } else if (wpa_s->p2p_in_invitation) {
6885                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
6886                                    wpa_s->ifname);
6887                         found = 1;
6888                         wpas_p2p_group_formation_failed(wpa_s);
6889                 }
6890         }
6891
6892         if (!found) {
6893                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
6894                 return -1;
6895         }
6896
6897         return 0;
6898 }
6899
6900
6901 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
6902 {
6903         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6904                 return;
6905
6906         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
6907                    "being available anymore");
6908         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
6909 }
6910
6911
6912 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
6913                                    int freq_24, int freq_5, int freq_overall)
6914 {
6915         struct p2p_data *p2p = wpa_s->global->p2p;
6916         if (p2p == NULL)
6917                 return;
6918         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
6919 }
6920
6921
6922 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
6923 {
6924         u8 peer[ETH_ALEN];
6925         struct p2p_data *p2p = wpa_s->global->p2p;
6926
6927         if (p2p == NULL)
6928                 return -1;
6929
6930         if (hwaddr_aton(addr, peer))
6931                 return -1;
6932
6933         return p2p_unauthorize(p2p, peer);
6934 }
6935
6936
6937 /**
6938  * wpas_p2p_disconnect - Disconnect from a P2P Group
6939  * @wpa_s: Pointer to wpa_supplicant data
6940  * Returns: 0 on success, -1 on failure
6941  *
6942  * This can be used to disconnect from a group in which the local end is a P2P
6943  * Client or to end a P2P Group in case the local end is the Group Owner. If a
6944  * virtual network interface was created for this group, that interface will be
6945  * removed. Otherwise, only the configured P2P group network will be removed
6946  * from the interface.
6947  */
6948 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
6949 {
6950
6951         if (wpa_s == NULL)
6952                 return -1;
6953
6954         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
6955                 -1 : 0;
6956 }
6957
6958
6959 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
6960 {
6961         int ret;
6962
6963         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6964                 return 0;
6965
6966         ret = p2p_in_progress(wpa_s->global->p2p);
6967         if (ret == 0) {
6968                 /*
6969                  * Check whether there is an ongoing WPS provisioning step (or
6970                  * other parts of group formation) on another interface since
6971                  * p2p_in_progress() does not report this to avoid issues for
6972                  * scans during such provisioning step.
6973                  */
6974                 if (wpa_s->global->p2p_group_formation &&
6975                     wpa_s->global->p2p_group_formation != wpa_s) {
6976                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
6977                                 "in group formation",
6978                                 wpa_s->global->p2p_group_formation->ifname);
6979                         ret = 1;
6980                 }
6981         }
6982
6983         if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
6984                 struct os_reltime now;
6985                 os_get_reltime(&now);
6986                 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
6987                                        P2P_MAX_INITIAL_CONN_WAIT_GO)) {
6988                         /* Wait for the first client has expired */
6989                         wpa_s->global->p2p_go_wait_client.sec = 0;
6990                 } else {
6991                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
6992                         ret = 1;
6993                 }
6994         }
6995
6996         return ret;
6997 }
6998
6999
7000 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
7001                               struct wpa_ssid *ssid)
7002 {
7003         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
7004             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7005                                  wpa_s->parent, NULL) > 0) {
7006                 /**
7007                  * Remove the network by scheduling the group formation
7008                  * timeout to happen immediately. The teardown code
7009                  * needs to be scheduled to run asynch later so that we
7010                  * don't delete data from under ourselves unexpectedly.
7011                  * Calling wpas_p2p_group_formation_timeout directly
7012                  * causes a series of crashes in WPS failure scenarios.
7013                  */
7014                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
7015                            "P2P group network getting removed");
7016                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
7017                                        wpa_s->parent, NULL);
7018         }
7019 }
7020
7021
7022 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
7023                                           const u8 *addr, const u8 *ssid,
7024                                           size_t ssid_len)
7025 {
7026         struct wpa_ssid *s;
7027         size_t i;
7028
7029         for (s = wpa_s->conf->ssid; s; s = s->next) {
7030                 if (s->disabled != 2)
7031                         continue;
7032                 if (ssid &&
7033                     (ssid_len != s->ssid_len ||
7034                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
7035                         continue;
7036                 if (addr == NULL) {
7037                         if (s->mode == WPAS_MODE_P2P_GO)
7038                                 return s;
7039                         continue;
7040                 }
7041                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
7042                         return s; /* peer is GO in the persistent group */
7043                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
7044                         continue;
7045                 for (i = 0; i < s->num_p2p_clients; i++) {
7046                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
7047                                       addr, ETH_ALEN) == 0)
7048                                 return s; /* peer is P2P client in persistent
7049                                            * group */
7050                 }
7051         }
7052
7053         return NULL;
7054 }
7055
7056
7057 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
7058                                        const u8 *addr)
7059 {
7060         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7061                                  wpa_s->parent, NULL) > 0) {
7062                 /*
7063                  * This can happen if WPS provisioning step is not terminated
7064                  * cleanly (e.g., P2P Client does not send WSC_Done). Since the
7065                  * peer was able to connect, there is no need to time out group
7066                  * formation after this, though. In addition, this is used with
7067                  * the initial connection wait on the GO as a separate formation
7068                  * timeout and as such, expected to be hit after the initial WPS
7069                  * provisioning step.
7070                  */
7071                 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
7072
7073                 if (!wpa_s->p2p_go_group_formation_completed &&
7074                     !wpa_s->group_formation_reported) {
7075                         /*
7076                          * GO has not yet notified group formation success since
7077                          * the WPS step was not completed cleanly. Do that
7078                          * notification now since the P2P Client was able to
7079                          * connect and as such, must have received the
7080                          * credential from the WPS step.
7081                          */
7082                         if (wpa_s->global->p2p)
7083                                 p2p_wps_success_cb(wpa_s->global->p2p, addr);
7084                         wpas_group_formation_completed(wpa_s, 1);
7085                 }
7086         }
7087         if (!wpa_s->p2p_go_group_formation_completed) {
7088                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
7089                 wpa_s->p2p_go_group_formation_completed = 1;
7090                 wpa_s->global->p2p_group_formation = NULL;
7091                 wpa_s->p2p_in_provisioning = 0;
7092                 wpa_s->p2p_in_invitation = 0;
7093         }
7094         wpa_s->global->p2p_go_wait_client.sec = 0;
7095         if (addr == NULL)
7096                 return;
7097         wpas_p2p_add_persistent_group_client(wpa_s, addr);
7098 }
7099
7100
7101 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
7102                                        int group_added)
7103 {
7104         struct wpa_supplicant *group = wpa_s;
7105         int ret = 0;
7106
7107         if (wpa_s->global->p2p_group_formation)
7108                 group = wpa_s->global->p2p_group_formation;
7109         wpa_s = wpa_s->parent;
7110         offchannel_send_action_done(wpa_s);
7111         if (group_added)
7112                 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
7113         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
7114         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
7115                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
7116                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
7117                          wpa_s->p2p_persistent_id,
7118                          wpa_s->p2p_pd_before_go_neg,
7119                          wpa_s->p2p_go_ht40,
7120                          wpa_s->p2p_go_vht);
7121         return ret;
7122 }
7123
7124
7125 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
7126 {
7127         int res;
7128
7129         if (!wpa_s->p2p_fallback_to_go_neg ||
7130             wpa_s->p2p_in_provisioning <= 5)
7131                 return 0;
7132
7133         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
7134                 return 0; /* peer operating as a GO */
7135
7136         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
7137                 "fallback to GO Negotiation");
7138         wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG
7139                        "reason=GO-not-found");
7140         res = wpas_p2p_fallback_to_go_neg(wpa_s, 1);
7141
7142         return res == 1 ? 2 : 1;
7143 }
7144
7145
7146 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
7147 {
7148         struct wpa_supplicant *ifs;
7149
7150         if (wpa_s->wpa_state > WPA_SCANNING) {
7151                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
7152                         "concurrent operation",
7153                         wpa_s->conf->p2p_search_delay);
7154                 return wpa_s->conf->p2p_search_delay;
7155         }
7156
7157         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
7158                          radio_list) {
7159                 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
7160                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
7161                                 "delay due to concurrent operation on "
7162                                 "interface %s",
7163                                 wpa_s->conf->p2p_search_delay,
7164                                 ifs->ifname);
7165                         return wpa_s->conf->p2p_search_delay;
7166                 }
7167         }
7168
7169         return 0;
7170 }
7171
7172
7173 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
7174                                      struct wpa_ssid *s, const u8 *addr,
7175                                      int iface_addr)
7176 {
7177         struct psk_list_entry *psk, *tmp;
7178         int changed = 0;
7179
7180         dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
7181                               list) {
7182                 if ((iface_addr && !psk->p2p &&
7183                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
7184                     (!iface_addr && psk->p2p &&
7185                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
7186                         wpa_dbg(wpa_s, MSG_DEBUG,
7187                                 "P2P: Remove persistent group PSK list entry for "
7188                                 MACSTR " p2p=%u",
7189                                 MAC2STR(psk->addr), psk->p2p);
7190                         dl_list_del(&psk->list);
7191                         os_free(psk);
7192                         changed++;
7193                 }
7194         }
7195
7196         return changed;
7197 }
7198
7199
7200 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
7201                          const u8 *p2p_dev_addr,
7202                          const u8 *psk, size_t psk_len)
7203 {
7204         struct wpa_ssid *ssid = wpa_s->current_ssid;
7205         struct wpa_ssid *persistent;
7206         struct psk_list_entry *p, *last;
7207
7208         if (psk_len != sizeof(p->psk))
7209                 return;
7210
7211         if (p2p_dev_addr) {
7212                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
7213                         " p2p_dev_addr=" MACSTR,
7214                         MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
7215                 if (is_zero_ether_addr(p2p_dev_addr))
7216                         p2p_dev_addr = NULL;
7217         } else {
7218                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
7219                         MAC2STR(mac_addr));
7220         }
7221
7222         if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
7223                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
7224                 /* To be added to persistent group once created */
7225                 if (wpa_s->global->add_psk == NULL) {
7226                         wpa_s->global->add_psk = os_zalloc(sizeof(*p));
7227                         if (wpa_s->global->add_psk == NULL)
7228                                 return;
7229                 }
7230                 p = wpa_s->global->add_psk;
7231                 if (p2p_dev_addr) {
7232                         p->p2p = 1;
7233                         os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7234                 } else {
7235                         p->p2p = 0;
7236                         os_memcpy(p->addr, mac_addr, ETH_ALEN);
7237                 }
7238                 os_memcpy(p->psk, psk, psk_len);
7239                 return;
7240         }
7241
7242         if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
7243                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
7244                 return;
7245         }
7246
7247         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
7248                                              ssid->ssid_len);
7249         if (!persistent) {
7250                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
7251                 return;
7252         }
7253
7254         p = os_zalloc(sizeof(*p));
7255         if (p == NULL)
7256                 return;
7257         if (p2p_dev_addr) {
7258                 p->p2p = 1;
7259                 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7260         } else {
7261                 p->p2p = 0;
7262                 os_memcpy(p->addr, mac_addr, ETH_ALEN);
7263         }
7264         os_memcpy(p->psk, psk, psk_len);
7265
7266         if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
7267             (last = dl_list_last(&persistent->psk_list,
7268                                  struct psk_list_entry, list))) {
7269                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
7270                         MACSTR " (p2p=%u) to make room for a new one",
7271                         MAC2STR(last->addr), last->p2p);
7272                 dl_list_del(&last->list);
7273                 os_free(last);
7274         }
7275
7276         wpas_p2p_remove_psk_entry(wpa_s->parent, persistent,
7277                                   p2p_dev_addr ? p2p_dev_addr : mac_addr,
7278                                   p2p_dev_addr == NULL);
7279         if (p2p_dev_addr) {
7280                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
7281                         MACSTR, MAC2STR(p2p_dev_addr));
7282         } else {
7283                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
7284                         MAC2STR(mac_addr));
7285         }
7286         dl_list_add(&persistent->psk_list, &p->list);
7287
7288         if (wpa_s->parent->conf->update_config &&
7289             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
7290                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
7291 }
7292
7293
7294 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
7295                                 struct wpa_ssid *s, const u8 *addr,
7296                                 int iface_addr)
7297 {
7298         int res;
7299
7300         res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
7301         if (res > 0 && wpa_s->conf->update_config &&
7302             wpa_config_write(wpa_s->confname, wpa_s->conf))
7303                 wpa_dbg(wpa_s, MSG_DEBUG,
7304                         "P2P: Failed to update configuration");
7305 }
7306
7307
7308 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
7309                                       const u8 *peer, int iface_addr)
7310 {
7311         struct hostapd_data *hapd;
7312         struct hostapd_wpa_psk *psk, *prev, *rem;
7313         struct sta_info *sta;
7314
7315         if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
7316             wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
7317                 return;
7318
7319         /* Remove per-station PSK entry */
7320         hapd = wpa_s->ap_iface->bss[0];
7321         prev = NULL;
7322         psk = hapd->conf->ssid.wpa_psk;
7323         while (psk) {
7324                 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
7325                     (!iface_addr &&
7326                      os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
7327                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
7328                                 MACSTR " iface_addr=%d",
7329                                 MAC2STR(peer), iface_addr);
7330                         if (prev)
7331                                 prev->next = psk->next;
7332                         else
7333                                 hapd->conf->ssid.wpa_psk = psk->next;
7334                         rem = psk;
7335                         psk = psk->next;
7336                         os_free(rem);
7337                 } else {
7338                         prev = psk;
7339                         psk = psk->next;
7340                 }
7341         }
7342
7343         /* Disconnect from group */
7344         if (iface_addr)
7345                 sta = ap_get_sta(hapd, peer);
7346         else
7347                 sta = ap_get_sta_p2p(hapd, peer);
7348         if (sta) {
7349                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
7350                         " (iface_addr=%d) from group",
7351                         MAC2STR(peer), iface_addr);
7352                 hostapd_drv_sta_deauth(hapd, sta->addr,
7353                                        WLAN_REASON_DEAUTH_LEAVING);
7354                 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
7355         }
7356 }
7357
7358
7359 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
7360                             int iface_addr)
7361 {
7362         struct wpa_ssid *s;
7363         struct wpa_supplicant *w;
7364         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
7365
7366         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
7367
7368         /* Remove from any persistent group */
7369         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
7370                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
7371                         continue;
7372                 if (!iface_addr)
7373                         wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0);
7374                 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr);
7375         }
7376
7377         /* Remove from any operating group */
7378         for (w = wpa_s->global->ifaces; w; w = w->next)
7379                 wpas_p2p_remove_client_go(w, peer, iface_addr);
7380 }
7381
7382
7383 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
7384 {
7385         struct wpa_supplicant *wpa_s = eloop_ctx;
7386         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
7387 }
7388
7389
7390 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
7391 {
7392         struct wpa_supplicant *wpa_s = eloop_ctx;
7393
7394         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
7395         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
7396 }
7397
7398
7399 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
7400                                         struct wpa_ssid *ssid)
7401 {
7402         struct wpa_supplicant *iface;
7403
7404         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7405                 if (!iface->current_ssid ||
7406                     iface->current_ssid->frequency == freq ||
7407                     (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
7408                      !iface->current_ssid->p2p_group))
7409                         continue;
7410
7411                 /* Remove the connection with least priority */
7412                 if (!wpas_is_p2p_prioritized(iface)) {
7413                         /* STA connection has priority over existing
7414                          * P2P connection, so remove the interface. */
7415                         wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
7416                         eloop_register_timeout(0, 0,
7417                                                wpas_p2p_group_freq_conflict,
7418                                                iface, NULL);
7419                         /* If connection in progress is P2P connection, do not
7420                          * proceed for the connection. */
7421                         if (wpa_s == iface)
7422                                 return -1;
7423                         else
7424                                 return 0;
7425                 } else {
7426                         /* P2P connection has priority, disable the STA network
7427                          */
7428                         wpa_supplicant_disable_network(wpa_s->global->ifaces,
7429                                                        ssid);
7430                         wpa_msg(wpa_s->global->ifaces, MSG_INFO,
7431                                 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
7432                         os_memset(wpa_s->global->ifaces->pending_bssid, 0,
7433                                   ETH_ALEN);
7434                         /* If P2P connection is in progress, continue
7435                          * connecting...*/
7436                         if (wpa_s == iface)
7437                                 return 0;
7438                         else
7439                                 return -1;
7440                 }
7441         }
7442
7443         return 0;
7444 }
7445
7446
7447 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
7448 {
7449         struct wpa_ssid *ssid = wpa_s->current_ssid;
7450
7451         if (ssid == NULL || !ssid->p2p_group)
7452                 return 0;
7453
7454         if (wpa_s->p2p_last_4way_hs_fail &&
7455             wpa_s->p2p_last_4way_hs_fail == ssid) {
7456                 u8 go_dev_addr[ETH_ALEN];
7457                 struct wpa_ssid *persistent;
7458
7459                 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
7460                                               ssid->ssid,
7461                                               ssid->ssid_len) <= 0) {
7462                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
7463                         goto disconnect;
7464                 }
7465
7466                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
7467                         MACSTR, MAC2STR(go_dev_addr));
7468                 persistent = wpas_p2p_get_persistent(wpa_s->parent, go_dev_addr,
7469                                                      ssid->ssid,
7470                                                      ssid->ssid_len);
7471                 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
7472                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
7473                         goto disconnect;
7474                 }
7475                 wpa_msg_global(wpa_s->parent, MSG_INFO,
7476                                P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
7477                                persistent->id);
7478         disconnect:
7479                 wpa_s->p2p_last_4way_hs_fail = NULL;
7480                 /*
7481                  * Remove the group from a timeout to avoid issues with caller
7482                  * continuing to use the interface if this is on a P2P group
7483                  * interface.
7484                  */
7485                 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
7486                                        wpa_s, NULL);
7487                 return 1;
7488         }
7489
7490         wpa_s->p2p_last_4way_hs_fail = ssid;
7491         return 0;
7492 }
7493
7494
7495 #ifdef CONFIG_WPS_NFC
7496
7497 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
7498                                              struct wpabuf *p2p)
7499 {
7500         struct wpabuf *ret;
7501         size_t wsc_len;
7502
7503         if (p2p == NULL) {
7504                 wpabuf_free(wsc);
7505                 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
7506                 return NULL;
7507         }
7508
7509         wsc_len = wsc ? wpabuf_len(wsc) : 0;
7510         ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
7511         if (ret == NULL) {
7512                 wpabuf_free(wsc);
7513                 wpabuf_free(p2p);
7514                 return NULL;
7515         }
7516
7517         wpabuf_put_be16(ret, wsc_len);
7518         if (wsc)
7519                 wpabuf_put_buf(ret, wsc);
7520         wpabuf_put_be16(ret, wpabuf_len(p2p));
7521         wpabuf_put_buf(ret, p2p);
7522
7523         wpabuf_free(wsc);
7524         wpabuf_free(p2p);
7525         wpa_hexdump_buf(MSG_DEBUG,
7526                         "P2P: Generated NFC connection handover message", ret);
7527
7528         if (ndef && ret) {
7529                 struct wpabuf *tmp;
7530                 tmp = ndef_build_p2p(ret);
7531                 wpabuf_free(ret);
7532                 if (tmp == NULL) {
7533                         wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
7534                         return NULL;
7535                 }
7536                 ret = tmp;
7537         }
7538
7539         return ret;
7540 }
7541
7542
7543 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
7544                              struct wpa_ssid **ssid, u8 *go_dev_addr)
7545 {
7546         struct wpa_supplicant *iface;
7547
7548         if (go_dev_addr)
7549                 os_memset(go_dev_addr, 0, ETH_ALEN);
7550         if (ssid)
7551                 *ssid = NULL;
7552         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7553                 if (iface->wpa_state < WPA_ASSOCIATING ||
7554                     iface->current_ssid == NULL || iface->assoc_freq == 0 ||
7555                     !iface->current_ssid->p2p_group ||
7556                     iface->current_ssid->mode != WPAS_MODE_INFRA)
7557                         continue;
7558                 if (ssid)
7559                         *ssid = iface->current_ssid;
7560                 if (go_dev_addr)
7561                         os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
7562                 return iface->assoc_freq;
7563         }
7564         return 0;
7565 }
7566
7567
7568 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
7569                                           int ndef)
7570 {
7571         struct wpabuf *wsc, *p2p;
7572         struct wpa_ssid *ssid;
7573         u8 go_dev_addr[ETH_ALEN];
7574         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
7575
7576         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
7577                 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
7578                 return NULL;
7579         }
7580
7581         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7582             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7583                            &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
7584                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
7585                 return NULL;
7586         }
7587
7588         if (cli_freq == 0) {
7589                 wsc = wps_build_nfc_handover_req_p2p(
7590                         wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
7591         } else
7592                 wsc = NULL;
7593         p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
7594                                          go_dev_addr, ssid ? ssid->ssid : NULL,
7595                                          ssid ? ssid->ssid_len : 0);
7596
7597         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7598 }
7599
7600
7601 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
7602                                           int ndef, int tag)
7603 {
7604         struct wpabuf *wsc, *p2p;
7605         struct wpa_ssid *ssid;
7606         u8 go_dev_addr[ETH_ALEN];
7607         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
7608
7609         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7610                 return NULL;
7611
7612         if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7613             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7614                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
7615                 return NULL;
7616
7617         if (cli_freq == 0) {
7618                 wsc = wps_build_nfc_handover_sel_p2p(
7619                         wpa_s->parent->wps,
7620                         tag ? wpa_s->conf->wps_nfc_dev_pw_id :
7621                         DEV_PW_NFC_CONNECTION_HANDOVER,
7622                         wpa_s->conf->wps_nfc_dh_pubkey,
7623                         tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
7624         } else
7625                 wsc = NULL;
7626         p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
7627                                          go_dev_addr, ssid ? ssid->ssid : NULL,
7628                                          ssid ? ssid->ssid_len : 0);
7629
7630         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7631 }
7632
7633
7634 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
7635                                    struct p2p_nfc_params *params)
7636 {
7637         wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
7638                    "connection handover (freq=%d)",
7639                    params->go_freq);
7640
7641         if (params->go_freq && params->go_ssid_len) {
7642                 wpa_s->p2p_wps_method = WPS_NFC;
7643                 wpa_s->pending_join_wps_method = WPS_NFC;
7644                 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
7645                 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
7646                           ETH_ALEN);
7647                 return wpas_p2p_join_start(wpa_s, params->go_freq,
7648                                            params->go_ssid,
7649                                            params->go_ssid_len);
7650         }
7651
7652         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7653                                 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
7654                                 params->go_freq, -1, 0, 1, 1);
7655 }
7656
7657
7658 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
7659                                   struct p2p_nfc_params *params, int tag)
7660 {
7661         int res, persistent;
7662         struct wpa_ssid *ssid;
7663
7664         wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
7665                    "connection handover");
7666         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7667                 ssid = wpa_s->current_ssid;
7668                 if (ssid == NULL)
7669                         continue;
7670                 if (ssid->mode != WPAS_MODE_P2P_GO)
7671                         continue;
7672                 if (wpa_s->ap_iface == NULL)
7673                         continue;
7674                 break;
7675         }
7676         if (wpa_s == NULL) {
7677                 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
7678                 return -1;
7679         }
7680
7681         if (wpa_s->parent->p2p_oob_dev_pw_id !=
7682             DEV_PW_NFC_CONNECTION_HANDOVER &&
7683             !wpa_s->parent->p2p_oob_dev_pw) {
7684                 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
7685                 return -1;
7686         }
7687         res = wpas_ap_wps_add_nfc_pw(
7688                 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
7689                 wpa_s->parent->p2p_oob_dev_pw,
7690                 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
7691                 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
7692         if (res)
7693                 return res;
7694
7695         if (!tag) {
7696                 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
7697                 return 0;
7698         }
7699
7700         if (!params->peer ||
7701             !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
7702                 return 0;
7703
7704         wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
7705                    " to join", MAC2STR(params->peer->p2p_device_addr));
7706
7707         wpa_s->global->p2p_invite_group = wpa_s;
7708         persistent = ssid->p2p_persistent_group &&
7709                 wpas_p2p_get_persistent(wpa_s->parent,
7710                                         params->peer->p2p_device_addr,
7711                                         ssid->ssid, ssid->ssid_len);
7712         wpa_s->parent->pending_invite_ssid_id = -1;
7713
7714         return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
7715                           P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
7716                           ssid->ssid, ssid->ssid_len, ssid->frequency,
7717                           wpa_s->global->p2p_dev_addr, persistent, 0,
7718                           wpa_s->parent->p2p_oob_dev_pw_id);
7719 }
7720
7721
7722 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
7723                                     struct p2p_nfc_params *params,
7724                                     int forced_freq)
7725 {
7726         wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
7727                    "connection handover");
7728         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7729                                 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
7730                                 forced_freq, -1, 0, 1, 1);
7731 }
7732
7733
7734 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
7735                                     struct p2p_nfc_params *params,
7736                                     int forced_freq)
7737 {
7738         int res;
7739
7740         wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
7741                    "connection handover");
7742         res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7743                                WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
7744                                forced_freq, -1, 0, 1, 1);
7745         if (res)
7746                 return res;
7747
7748         res = wpas_p2p_listen(wpa_s, 60);
7749         if (res) {
7750                 p2p_unauthorize(wpa_s->global->p2p,
7751                                 params->peer->p2p_device_addr);
7752         }
7753
7754         return res;
7755 }
7756
7757
7758 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
7759                                             const struct wpabuf *data,
7760                                             int sel, int tag, int forced_freq)
7761 {
7762         const u8 *pos, *end;
7763         u16 len, id;
7764         struct p2p_nfc_params params;
7765         int res;
7766
7767         os_memset(&params, 0, sizeof(params));
7768         params.sel = sel;
7769
7770         wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
7771
7772         pos = wpabuf_head(data);
7773         end = pos + wpabuf_len(data);
7774
7775         if (end - pos < 2) {
7776                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
7777                            "attributes");
7778                 return -1;
7779         }
7780         len = WPA_GET_BE16(pos);
7781         pos += 2;
7782         if (len > end - pos) {
7783                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
7784                            "attributes");
7785                 return -1;
7786         }
7787         params.wsc_attr = pos;
7788         params.wsc_len = len;
7789         pos += len;
7790
7791         if (end - pos < 2) {
7792                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
7793                            "attributes");
7794                 return -1;
7795         }
7796         len = WPA_GET_BE16(pos);
7797         pos += 2;
7798         if (len > end - pos) {
7799                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
7800                            "attributes");
7801                 return -1;
7802         }
7803         params.p2p_attr = pos;
7804         params.p2p_len = len;
7805         pos += len;
7806
7807         wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
7808                     params.wsc_attr, params.wsc_len);
7809         wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
7810                     params.p2p_attr, params.p2p_len);
7811         if (pos < end) {
7812                 wpa_hexdump(MSG_DEBUG,
7813                             "P2P: Ignored extra data after P2P attributes",
7814                             pos, end - pos);
7815         }
7816
7817         res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
7818         if (res)
7819                 return res;
7820
7821         if (params.next_step == NO_ACTION)
7822                 return 0;
7823
7824         if (params.next_step == BOTH_GO) {
7825                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
7826                         MAC2STR(params.peer->p2p_device_addr));
7827                 return 0;
7828         }
7829
7830         if (params.next_step == PEER_CLIENT) {
7831                 if (!is_zero_ether_addr(params.go_dev_addr)) {
7832                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
7833                                 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
7834                                 " ssid=\"%s\"",
7835                                 MAC2STR(params.peer->p2p_device_addr),
7836                                 params.go_freq,
7837                                 MAC2STR(params.go_dev_addr),
7838                                 wpa_ssid_txt(params.go_ssid,
7839                                              params.go_ssid_len));
7840                 } else {
7841                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
7842                                 "peer=" MACSTR " freq=%d",
7843                                 MAC2STR(params.peer->p2p_device_addr),
7844                                 params.go_freq);
7845                 }
7846                 return 0;
7847         }
7848
7849         if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
7850                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
7851                         MACSTR, MAC2STR(params.peer->p2p_device_addr));
7852                 return 0;
7853         }
7854
7855         wpabuf_free(wpa_s->p2p_oob_dev_pw);
7856         wpa_s->p2p_oob_dev_pw = NULL;
7857
7858         if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
7859                 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
7860                            "received");
7861                 return -1;
7862         }
7863
7864         id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
7865         wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
7866         wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
7867                     params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
7868         os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
7869                   params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
7870         wpa_s->p2p_peer_oob_pk_hash_known = 1;
7871
7872         if (tag) {
7873                 if (id < 0x10) {
7874                         wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
7875                                    "peer OOB Device Password Id %u", id);
7876                         return -1;
7877                 }
7878                 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
7879                            "Device Password Id %u", id);
7880                 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
7881                                 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
7882                                 params.oob_dev_pw_len -
7883                                 WPS_OOB_PUBKEY_HASH_LEN - 2);
7884                 wpa_s->p2p_oob_dev_pw_id = id;
7885                 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
7886                         params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
7887                         params.oob_dev_pw_len -
7888                         WPS_OOB_PUBKEY_HASH_LEN - 2);
7889                 if (wpa_s->p2p_oob_dev_pw == NULL)
7890                         return -1;
7891
7892                 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7893                     wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7894                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
7895                         return -1;
7896         } else {
7897                 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
7898                            "without Device Password");
7899                 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
7900         }
7901
7902         switch (params.next_step) {
7903         case NO_ACTION:
7904         case BOTH_GO:
7905         case PEER_CLIENT:
7906                 /* already covered above */
7907                 return 0;
7908         case JOIN_GROUP:
7909                 return wpas_p2p_nfc_join_group(wpa_s, &params);
7910         case AUTH_JOIN:
7911                 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
7912         case INIT_GO_NEG:
7913                 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
7914         case RESP_GO_NEG:
7915                 /* TODO: use own OOB Dev Pw */
7916                 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
7917         }
7918
7919         return -1;
7920 }
7921
7922
7923 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
7924                              const struct wpabuf *data, int forced_freq)
7925 {
7926         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7927                 return -1;
7928
7929         return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
7930 }
7931
7932
7933 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
7934                                  const struct wpabuf *req,
7935                                  const struct wpabuf *sel, int forced_freq)
7936 {
7937         struct wpabuf *tmp;
7938         int ret;
7939
7940         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7941                 return -1;
7942
7943         wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
7944
7945         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
7946                           wpabuf_head(req), wpabuf_len(req));
7947         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
7948                           wpabuf_head(sel), wpabuf_len(sel));
7949         if (forced_freq)
7950                 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
7951         tmp = ndef_parse_p2p(init ? sel : req);
7952         if (tmp == NULL) {
7953                 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
7954                 return -1;
7955         }
7956
7957         ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
7958                                                forced_freq);
7959         wpabuf_free(tmp);
7960
7961         return ret;
7962 }
7963
7964
7965 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
7966 {
7967         const u8 *if_addr;
7968         int go_intent = wpa_s->conf->p2p_go_intent;
7969         struct wpa_supplicant *iface;
7970
7971         if (wpa_s->global->p2p == NULL)
7972                 return -1;
7973
7974         if (!enabled) {
7975                 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
7976                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7977                 {
7978                         if (!iface->ap_iface)
7979                                 continue;
7980                         hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
7981                 }
7982                 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
7983                                                  0, NULL);
7984                 if (wpa_s->p2p_nfc_tag_enabled)
7985                         wpas_p2p_remove_pending_group_interface(wpa_s);
7986                 wpa_s->p2p_nfc_tag_enabled = 0;
7987                 return 0;
7988         }
7989
7990         if (wpa_s->global->p2p_disabled)
7991                 return -1;
7992
7993         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
7994             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
7995             wpa_s->conf->wps_nfc_dev_pw == NULL ||
7996             wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
7997                 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
7998                            "to allow static handover cases");
7999                 return -1;
8000         }
8001
8002         wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
8003
8004         wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8005         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8006         wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8007         if (wpa_s->p2p_oob_dev_pw == NULL)
8008                 return -1;
8009         wpa_s->p2p_peer_oob_pk_hash_known = 0;
8010
8011         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
8012             wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
8013                 /*
8014                  * P2P Group Interface present and the command came on group
8015                  * interface, so enable the token for the current interface.
8016                  */
8017                 wpa_s->create_p2p_iface = 0;
8018         } else {
8019                 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
8020         }
8021
8022         if (wpa_s->create_p2p_iface) {
8023                 enum wpa_driver_if_type iftype;
8024                 /* Prepare to add a new interface for the group */
8025                 iftype = WPA_IF_P2P_GROUP;
8026                 if (go_intent == 15)
8027                         iftype = WPA_IF_P2P_GO;
8028                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
8029                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
8030                                    "interface for the group");
8031                         return -1;
8032                 }
8033
8034                 if_addr = wpa_s->pending_interface_addr;
8035         } else
8036                 if_addr = wpa_s->own_addr;
8037
8038         wpa_s->p2p_nfc_tag_enabled = enabled;
8039
8040         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8041                 struct hostapd_data *hapd;
8042                 if (iface->ap_iface == NULL)
8043                         continue;
8044                 hapd = iface->ap_iface->bss[0];
8045                 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
8046                 hapd->conf->wps_nfc_dh_pubkey =
8047                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
8048                 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
8049                 hapd->conf->wps_nfc_dh_privkey =
8050                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
8051                 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
8052                 hapd->conf->wps_nfc_dev_pw =
8053                         wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8054                 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8055
8056                 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
8057                         wpa_dbg(iface, MSG_DEBUG,
8058                                 "P2P: Failed to enable NFC Tag for GO");
8059                 }
8060         }
8061         p2p_set_authorized_oob_dev_pw_id(
8062                 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
8063                 if_addr);
8064
8065         return 0;
8066 }
8067
8068 #endif /* CONFIG_WPS_NFC */
8069
8070
8071 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
8072                                              struct wpa_used_freq_data *freqs,
8073                                              unsigned int num)
8074 {
8075         u8 curr_chan, cand, chan;
8076         unsigned int i;
8077
8078         curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
8079         for (i = 0, cand = 0; i < num; i++) {
8080                 ieee80211_freq_to_chan(freqs[i].freq, &chan);
8081                 if (curr_chan == chan) {
8082                         cand = 0;
8083                         break;
8084                 }
8085
8086                 if (chan == 1 || chan == 6 || chan == 11)
8087                         cand = chan;
8088         }
8089
8090         if (cand) {
8091                 wpa_dbg(wpa_s, MSG_DEBUG,
8092                         "P2P: Update Listen channel to %u based on operating channel",
8093                         cand);
8094                 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
8095         }
8096 }
8097
8098
8099 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
8100 {
8101         struct wpa_used_freq_data *freqs;
8102         unsigned int num = wpa_s->num_multichan_concurrent;
8103
8104         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8105                 return;
8106
8107         /*
8108          * If possible, optimize the Listen channel to be a channel that is
8109          * already used by one of the other interfaces.
8110          */
8111         if (!wpa_s->conf->p2p_optimize_listen_chan)
8112                 return;
8113
8114         if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
8115                 return;
8116
8117         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
8118         if (!freqs)
8119                 return;
8120
8121         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
8122
8123         wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
8124         os_free(freqs);
8125 }
8126
8127
8128 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
8129 {
8130         if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
8131                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
8132                         "the management interface is being removed");
8133                 wpas_p2p_deinit_global(wpa_s->global);
8134         }
8135 }
8136
8137
8138 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
8139 {
8140         if (wpa_s->ap_iface->bss)
8141                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
8142         wpas_p2p_group_deinit(wpa_s);
8143 }