wpa_supplicant/p2p_supplicant.c

   1 /*
   2  * wpa_supplicant - P2P
   3  * Copyright (c) 2009-2010, Atheros Communications
   4  * Copyright (c) 2010-2014, Jouni Malinen <j@w1.fi>
   5  *
   6  * This software may be distributed under the terms of the BSD license.
   7  * See README for more details.
   8  */
   9
  10 #include "includes.h"
  11
  12 #include "common.h"
  13 #include "eloop.h"
  14 #include "common/ieee802_11_common.h"
  15 #include "common/ieee802_11_defs.h"
  16 #include "common/wpa_ctrl.h"
  17 #include "wps/wps_i.h"
  18 #include "p2p/p2p.h"
  19 #include "ap/hostapd.h"
  20 #include "ap/ap_config.h"
  21 #include "ap/sta_info.h"
  22 #include "ap/ap_drv_ops.h"
  23 #include "ap/wps_hostapd.h"
  24 #include "ap/p2p_hostapd.h"
  25 #include "ap/dfs.h"
  26 #include "eapol_supp/eapol_supp_sm.h"
  27 #include "rsn_supp/wpa.h"
  28 #include "wpa_supplicant_i.h"
  29 #include "driver_i.h"
  30 #include "ap.h"
  31 #include "config_ssid.h"
  32 #include "config.h"
  33 #include "notify.h"
  34 #include "scan.h"
  35 #include "bss.h"
  36 #include "offchannel.h"
  37 #include "wps_supplicant.h"
  38 #include "p2p_supplicant.h"
  39 #include "wifi_display.h"
  40
  41
  42 /*
  43  * How many times to try to scan to find the GO before giving up on join
  44  * request.
  45  */
  46 #define P2P_MAX_JOIN_SCAN_ATTEMPTS 10
  47
  48 #define P2P_AUTO_PD_SCAN_ATTEMPTS 5
  49
  50 #ifndef P2P_MAX_CLIENT_IDLE
  51 /*
  52  * How many seconds to try to reconnect to the GO when connection in P2P client
  53  * role has been lost.
  54  */
  55 #define P2P_MAX_CLIENT_IDLE 10
  56 #endif /* P2P_MAX_CLIENT_IDLE */
  57
  58 #ifndef P2P_MAX_INITIAL_CONN_WAIT
  59 /*
  60  * How many seconds to wait for initial 4-way handshake to get completed after
  61  * WPS provisioning step or after the re-invocation of a persistent group on a
  62  * P2P Client.
  63  */
  64 #define P2P_MAX_INITIAL_CONN_WAIT 10
  65 #endif /* P2P_MAX_INITIAL_CONN_WAIT */
  66
  67 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO
  68 /*
  69  * How many seconds to wait for initial 4-way handshake to get completed after
  70  * WPS provisioning step on the GO. This controls the extra time the P2P
  71  * operation is considered to be in progress (e.g., to delay other scans) after
  72  * WPS provisioning has been completed on the GO during group formation.
  73  */
  74 #define P2P_MAX_INITIAL_CONN_WAIT_GO 10
  75 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO */
  76
  77 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE
  78 /*
  79  * How many seconds to wait for initial 4-way handshake to get completed after
  80  * re-invocation of a persistent group on the GO when the client is expected
  81  * to connect automatically (no user interaction).
  82  */
  83 #define P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 15
  84 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE */
  85
  86 #define P2P_MGMT_DEVICE_PREFIX          "p2p-dev-"
  87
  88 enum p2p_group_removal_reason {
  89         P2P_GROUP_REMOVAL_UNKNOWN,
  90         P2P_GROUP_REMOVAL_SILENT,
  91         P2P_GROUP_REMOVAL_FORMATION_FAILED,
  92         P2P_GROUP_REMOVAL_REQUESTED,
  93         P2P_GROUP_REMOVAL_IDLE_TIMEOUT,
  94         P2P_GROUP_REMOVAL_UNAVAILABLE,
  95         P2P_GROUP_REMOVAL_GO_ENDING_SESSION,
  96         P2P_GROUP_REMOVAL_PSK_FAILURE,
  97         P2P_GROUP_REMOVAL_FREQ_CONFLICT
  98 };
  99
 100
 101 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
 102 static struct wpa_supplicant *
 103 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
 104                          int go);
 105 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
 106                                const u8 *ssid, size_t ssid_len);
 107 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
 108                                    const u8 *ssid, size_t ssid_len);
 109 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
 110 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
 111                          const u8 *dev_addr, enum p2p_wps_method wps_method,
 112                          int auto_join, int freq,
 113                          const u8 *ssid, size_t ssid_len);
 114 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
 115 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
 116 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
 117 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
 118 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
 119                                              void *timeout_ctx);
 120 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx);
 121 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
 122                                        int group_added);
 123 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s);
 124 static void wpas_stop_listen(void *ctx);
 125 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx);
 126 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s);
 127 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
 128                                         enum wpa_driver_if_type type);
 129
 130
 131 /*
 132  * Get the number of concurrent channels that the HW can operate, but that are
 133  * currently not in use by any of the wpa_supplicant interfaces.
 134  */
 135 static int wpas_p2p_num_unused_channels(struct wpa_supplicant *wpa_s)
 136 {
 137         int *freqs;
 138         int num, unused;
 139
 140         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
 141         if (!freqs)
 142                 return -1;
 143
 144         num = get_shared_radio_freqs(wpa_s, freqs,
 145                                      wpa_s->num_multichan_concurrent);
 146         os_free(freqs);
 147
 148         unused = wpa_s->num_multichan_concurrent - num;
 149         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: num_unused_channels: %d", unused);
 150         return unused;
 151 }
 152
 153
 154 /*
 155  * Get the frequencies that are currently in use by one or more of the virtual
 156  * interfaces, and that are also valid for P2P operation.
 157  */
 158 static unsigned int
 159 wpas_p2p_valid_oper_freqs(struct wpa_supplicant *wpa_s,
 160                           struct wpa_used_freq_data *p2p_freqs,
 161                           unsigned int len)
 162 {
 163         struct wpa_used_freq_data *freqs;
 164         unsigned int num, i, j;
 165
 166         freqs = os_calloc(wpa_s->num_multichan_concurrent,
 167                           sizeof(struct wpa_used_freq_data));
 168         if (!freqs)
 169                 return 0;
 170
 171         num = get_shared_radio_freqs_data(wpa_s, freqs,
 172                                           wpa_s->num_multichan_concurrent);
 173
 174         os_memset(p2p_freqs, 0, sizeof(struct wpa_used_freq_data) * len);
 175
 176         for (i = 0, j = 0; i < num && j < len; i++) {
 177                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
 178                         p2p_freqs[j++] = freqs[i];
 179         }
 180
 181         os_free(freqs);
 182
 183         dump_freq_data(wpa_s, "valid for P2P", p2p_freqs, j);
 184
 185         return j;
 186 }
 187
 188
 189 static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s,
 190                                              int freq)
 191 {
 192         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 193                 return;
 194
 195         /* Use the wpa_s used to control the P2P Device operation */
 196         wpa_s = wpa_s->global->p2p_init_wpa_s;
 197
 198         if (wpa_s->conf->p2p_ignore_shared_freq &&
 199             freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
 200             wpas_p2p_num_unused_channels(wpa_s) > 0) {
 201                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz due to p2p_ignore_shared_freq=1 configuration",
 202                            freq);
 203                 freq = 0;
 204         }
 205         p2p_set_own_freq_preference(wpa_s->global->p2p, freq);
 206 }
 207
 208
 209 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
 210                                       struct wpa_scan_results *scan_res)
 211 {
 212         size_t i;
 213
 214         if (wpa_s->p2p_scan_work) {
 215                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
 216                 wpa_s->p2p_scan_work = NULL;
 217                 radio_work_done(work);
 218         }
 219
 220         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 221                 return;
 222
 223         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
 224                    (int) scan_res->num);
 225
 226         for (i = 0; i < scan_res->num; i++) {
 227                 struct wpa_scan_res *bss = scan_res->res[i];
 228                 struct os_reltime time_tmp_age, entry_ts;
 229                 const u8 *ies;
 230                 size_t ies_len;
 231
 232                 time_tmp_age.sec = bss->age / 1000;
 233                 time_tmp_age.usec = (bss->age % 1000) * 1000;
 234                 os_reltime_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts);
 235
 236                 ies = (const u8 *) (bss + 1);
 237                 ies_len = bss->ie_len;
 238                 if (bss->beacon_ie_len > 0 &&
 239                     !wpa_scan_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
 240                     wpa_scan_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
 241                         wpa_printf(MSG_DEBUG, "P2P: Use P2P IE(s) from Beacon frame since no P2P IE(s) in Probe Response frames received for "
 242                                    MACSTR, MAC2STR(bss->bssid));
 243                         ies = ies + ies_len;
 244                         ies_len = bss->beacon_ie_len;
 245                 }
 246
 247
 248                 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
 249                                          bss->freq, &entry_ts, bss->level,
 250                                          ies, ies_len) > 0)
 251                         break;
 252         }
 253
 254         p2p_scan_res_handled(wpa_s->global->p2p);
 255 }
 256
 257
 258 static void wpas_p2p_trigger_scan_cb(struct wpa_radio_work *work, int deinit)
 259 {
 260         struct wpa_supplicant *wpa_s = work->wpa_s;
 261         struct wpa_driver_scan_params *params = work->ctx;
 262         int ret;
 263
 264         if (deinit) {
 265                 if (!work->started) {
 266                         wpa_scan_free_params(params);
 267                         return;
 268                 }
 269
 270                 wpa_s->p2p_scan_work = NULL;
 271                 return;
 272         }
 273
 274         ret = wpa_drv_scan(wpa_s, params);
 275         wpa_scan_free_params(params);
 276         work->ctx = NULL;
 277         if (ret) {
 278                 radio_work_done(work);
 279                 p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 280                 return;
 281         }
 282
 283         p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 284         os_get_reltime(&wpa_s->scan_trigger_time);
 285         wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 286         wpa_s->own_scan_requested = 1;
 287         wpa_s->p2p_scan_work = work;
 288 }
 289
 290
 291 static int wpas_p2p_search_social_channel(struct wpa_supplicant *wpa_s,
 292                                           int freq)
 293 {
 294         if (wpa_s->global->p2p_24ghz_social_channels &&
 295             (freq == 2412 || freq == 2437 || freq == 2462)) {
 296                 /*
 297                  * Search all social channels regardless of whether these have
 298                  * been disabled for P2P operating channel use to avoid missing
 299                  * peers.
 300                  */
 301                 return 1;
 302         }
 303         return p2p_supported_freq(wpa_s->global->p2p, freq);
 304 }
 305
 306
 307 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
 308                          unsigned int num_req_dev_types,
 309                          const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
 310 {
 311         struct wpa_supplicant *wpa_s = ctx;
 312         struct wpa_driver_scan_params *params = NULL;
 313         struct wpabuf *wps_ie, *ies;
 314         unsigned int num_channels = 0;
 315         int social_channels_freq[] = { 2412, 2437, 2462, 60480 };
 316         size_t ielen;
 317         u8 *n, i;
 318
 319         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 320                 return -1;
 321
 322         if (wpa_s->p2p_scan_work) {
 323                 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending");
 324                 return -1;
 325         }
 326
 327         params = os_zalloc(sizeof(*params));
 328         if (params == NULL)
 329                 return -1;
 330
 331         /* P2P Wildcard SSID */
 332         params->num_ssids = 1;
 333         n = os_malloc(P2P_WILDCARD_SSID_LEN);
 334         if (n == NULL)
 335                 goto fail;
 336         os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
 337         params->ssids[0].ssid = n;
 338         params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
 339
 340         wpa_s->wps->dev.p2p = 1;
 341         wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
 342                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
 343                                         num_req_dev_types, req_dev_types);
 344         if (wps_ie == NULL)
 345                 goto fail;
 346
 347         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
 348         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
 349         if (ies == NULL) {
 350                 wpabuf_free(wps_ie);
 351                 goto fail;
 352         }
 353         wpabuf_put_buf(ies, wps_ie);
 354         wpabuf_free(wps_ie);
 355
 356         p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);
 357
 358         params->p2p_probe = 1;
 359         n = os_malloc(wpabuf_len(ies));
 360         if (n == NULL) {
 361                 wpabuf_free(ies);
 362                 goto fail;
 363         }
 364         os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies));
 365         params->extra_ies = n;
 366         params->extra_ies_len = wpabuf_len(ies);
 367         wpabuf_free(ies);
 368
 369         switch (type) {
 370         case P2P_SCAN_SOCIAL:
 371                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 1,
 372                                           sizeof(int));
 373                 if (params->freqs == NULL)
 374                         goto fail;
 375                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 376                         if (wpas_p2p_search_social_channel(
 377                                     wpa_s, social_channels_freq[i]))
 378                                 params->freqs[num_channels++] =
 379                                         social_channels_freq[i];
 380                 }
 381                 params->freqs[num_channels++] = 0;
 382                 break;
 383         case P2P_SCAN_FULL:
 384                 break;
 385         case P2P_SCAN_SPECIFIC:
 386                 params->freqs = os_calloc(2, sizeof(int));
 387                 if (params->freqs == NULL)
 388                         goto fail;
 389                 params->freqs[0] = freq;
 390                 params->freqs[1] = 0;
 391                 break;
 392         case P2P_SCAN_SOCIAL_PLUS_ONE:
 393                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 2,
 394                                           sizeof(int));
 395                 if (params->freqs == NULL)
 396                         goto fail;
 397                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 398                         if (wpas_p2p_search_social_channel(
 399                                     wpa_s, social_channels_freq[i]))
 400                                 params->freqs[num_channels++] =
 401                                         social_channels_freq[i];
 402                 }
 403                 if (p2p_supported_freq(wpa_s->global->p2p, freq))
 404                         params->freqs[num_channels++] = freq;
 405                 params->freqs[num_channels++] = 0;
 406                 break;
 407         }
 408
 409         radio_remove_works(wpa_s, "p2p-scan", 0);
 410         if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb,
 411                            params) < 0)
 412                 goto fail;
 413         return 0;
 414
 415 fail:
 416         wpa_scan_free_params(params);
 417         return -1;
 418 }
 419
 420
 421 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 422 {
 423         switch (p2p_group_interface) {
 424         case P2P_GROUP_INTERFACE_PENDING:
 425                 return WPA_IF_P2P_GROUP;
 426         case P2P_GROUP_INTERFACE_GO:
 427                 return WPA_IF_P2P_GO;
 428         case P2P_GROUP_INTERFACE_CLIENT:
 429                 return WPA_IF_P2P_CLIENT;
 430         }
 431
 432         return WPA_IF_P2P_GROUP;
 433 }
 434
 435
 436 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 437                                                   const u8 *ssid,
 438                                                   size_t ssid_len, int *go)
 439 {
 440         struct wpa_ssid *s;
 441
 442         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 443                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 444                         if (s->disabled != 0 || !s->p2p_group ||
 445                             s->ssid_len != ssid_len ||
 446                             os_memcmp(ssid, s->ssid, ssid_len) != 0)
 447                                 continue;
 448                         if (s->mode == WPAS_MODE_P2P_GO &&
 449                             s != wpa_s->current_ssid)
 450                                 continue;
 451                         if (go)
 452                                 *go = s->mode == WPAS_MODE_P2P_GO;
 453                         return wpa_s;
 454                 }
 455         }
 456
 457         return NULL;
 458 }
 459
 460
 461 static void run_wpas_p2p_disconnect(void *eloop_ctx, void *timeout_ctx)
 462 {
 463         struct wpa_supplicant *wpa_s = eloop_ctx;
 464         wpa_printf(MSG_DEBUG,
 465                    "P2P: Complete previously requested removal of %s",
 466                    wpa_s->ifname);
 467         wpas_p2p_disconnect(wpa_s);
 468 }
 469
 470
 471 static int wpas_p2p_disconnect_safely(struct wpa_supplicant *wpa_s,
 472                                       struct wpa_supplicant *calling_wpa_s)
 473 {
 474         if (calling_wpa_s == wpa_s && wpa_s &&
 475             wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 476                 /*
 477                  * The calling wpa_s instance is going to be removed. Do that
 478                  * from an eloop callback to keep the instance available until
 479                  * the caller has returned. This my be needed, e.g., to provide
 480                  * control interface responses on the per-interface socket.
 481                  */
 482                 if (eloop_register_timeout(0, 0, run_wpas_p2p_disconnect,
 483                                            wpa_s, NULL) < 0)
 484                         return -1;
 485                 return 0;
 486         }
 487
 488         return wpas_p2p_disconnect(wpa_s);
 489 }
 490
 491
 492 /* Determine total number of clients in active groups where we are the GO */
 493 static unsigned int p2p_group_go_member_count(struct wpa_supplicant *wpa_s)
 494 {
 495         unsigned int count = 0;
 496         struct wpa_ssid *s;
 497
 498         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 499                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 500                         wpa_printf(MSG_DEBUG,
 501                                    "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d",
 502                                    wpa_s, s, s->disabled, s->p2p_group,
 503                                    s->mode);
 504                         if (!s->disabled && s->p2p_group &&
 505                             s->mode == WPAS_MODE_P2P_GO) {
 506                                 count += p2p_get_group_num_members(
 507                                         wpa_s->p2p_group);
 508                         }
 509                 }
 510         }
 511
 512         return count;
 513 }
 514
 515
 516 /* Find an interface for a P2P group where we are the GO */
 517 static struct wpa_supplicant *
 518 wpas_p2p_get_go_group(struct wpa_supplicant *wpa_s)
 519 {
 520         struct wpa_supplicant *save = NULL;
 521         struct wpa_ssid *s;
 522
 523         if (!wpa_s)
 524                 return NULL;
 525
 526         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 527                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 528                         if (s->disabled || !s->p2p_group ||
 529                             s->mode != WPAS_MODE_P2P_GO)
 530                                 continue;
 531
 532                         /* Prefer a group with connected clients */
 533                         if (p2p_get_group_num_members(wpa_s->p2p_group))
 534                                 return wpa_s;
 535                         save = wpa_s;
 536                 }
 537         }
 538
 539         /* No group with connected clients, so pick the one without (if any) */
 540         return save;
 541 }
 542
 543
 544 /* Find an active P2P group where we are the GO */
 545 static struct wpa_ssid * wpas_p2p_group_go_ssid(struct wpa_supplicant *wpa_s,
 546                                                 u8 *bssid)
 547 {
 548         struct wpa_ssid *s, *empty = NULL;
 549
 550         if (!wpa_s)
 551                 return 0;
 552
 553         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 554                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 555                         if (s->disabled || !s->p2p_group ||
 556                             s->mode != WPAS_MODE_P2P_GO)
 557                                 continue;
 558
 559                         os_memcpy(bssid, wpa_s->own_addr, ETH_ALEN);
 560                         if (p2p_get_group_num_members(wpa_s->p2p_group))
 561                                 return s;
 562                         empty = s;
 563                 }
 564         }
 565
 566         return empty;
 567 }
 568
 569
 570 /* Find a persistent group where we are the GO */
 571 static struct wpa_ssid *
 572 wpas_p2p_get_persistent_go(struct wpa_supplicant *wpa_s)
 573 {
 574         struct wpa_ssid *s;
 575
 576         for (s = wpa_s->conf->ssid; s; s = s->next) {
 577                 if (s->disabled == 2 && s->mode == WPAS_MODE_P2P_GO)
 578                         return s;
 579         }
 580
 581         return NULL;
 582 }
 583
 584
 585 static u8 p2ps_group_capability(void *ctx, u8 incoming, u8 role)
 586 {
 587         struct wpa_supplicant *wpa_s = ctx, *tmp_wpa_s;
 588         struct wpa_ssid *s;
 589         u8 conncap = P2PS_SETUP_NONE;
 590         unsigned int owned_members = 0;
 591         unsigned int owner = 0;
 592         unsigned int client = 0;
 593         struct wpa_supplicant *go_wpa_s;
 594         struct wpa_ssid *persistent_go;
 595         int p2p_no_group_iface;
 596
 597         wpa_printf(MSG_DEBUG, "P2P: Conncap - in:%d role:%d", incoming, role);
 598
 599         /*
 600          * For non-concurrent capable devices:
 601          * If persistent_go, then no new.
 602          * If GO, then no client.
 603          * If client, then no GO.
 604          */
 605         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
 606         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
 607         p2p_no_group_iface = wpa_s->conf->p2p_no_group_iface;
 608
 609         wpa_printf(MSG_DEBUG, "P2P: GO(iface)=%p persistent(ssid)=%p",
 610                    go_wpa_s, persistent_go);
 611
 612         for (tmp_wpa_s = wpa_s->global->ifaces; tmp_wpa_s;
 613              tmp_wpa_s = tmp_wpa_s->next) {
 614                 for (s = tmp_wpa_s->conf->ssid; s; s = s->next) {
 615                         wpa_printf(MSG_DEBUG,
 616                                    "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d",
 617                                    tmp_wpa_s, s, s->disabled,
 618                                    s->p2p_group, s->mode);
 619                         if (!s->disabled && s->p2p_group) {
 620                                 if (s->mode == WPAS_MODE_P2P_GO) {
 621                                         owned_members +=
 622                                                 p2p_get_group_num_members(
 623                                                         tmp_wpa_s->p2p_group);
 624                                         owner++;
 625                                 } else
 626                                         client++;
 627                         }
 628                 }
 629         }
 630
 631         /* If not concurrent, restrict our choices */
 632         if (p2p_no_group_iface) {
 633                 wpa_printf(MSG_DEBUG, "P2P: p2p_no_group_iface");
 634
 635                 if (client)
 636                         return P2PS_SETUP_NONE;
 637
 638                 if (go_wpa_s) {
 639                         if (role == P2PS_SETUP_CLIENT ||
 640                             incoming == P2PS_SETUP_GROUP_OWNER ||
 641                             p2p_client_limit_reached(go_wpa_s->p2p_group))
 642                                 return P2PS_SETUP_NONE;
 643
 644                         return P2PS_SETUP_GROUP_OWNER;
 645                 }
 646
 647                 if (persistent_go) {
 648                         if (role == P2PS_SETUP_NONE || role == P2PS_SETUP_NEW) {
 649                                 if (!incoming)
 650                                         return P2PS_SETUP_GROUP_OWNER |
 651                                                 P2PS_SETUP_CLIENT;
 652                                 if (incoming == P2PS_SETUP_NEW) {
 653                                         u8 r;
 654
 655                                         if (os_get_random(&r, sizeof(r)) < 0 ||
 656                                             (r & 1))
 657                                                 return P2PS_SETUP_CLIENT;
 658                                         return P2PS_SETUP_GROUP_OWNER;
 659                                 }
 660                         }
 661                 }
 662         }
 663
 664         /* If a required role has been specified, handle it here */
 665         if (role && role != P2PS_SETUP_NEW) {
 666                 switch (incoming) {
 667                 case P2PS_SETUP_NONE:
 668                 case P2PS_SETUP_NEW:
 669                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 670                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 671                         conncap = role;
 672                         goto grp_owner;
 673
 674                 case P2PS_SETUP_GROUP_OWNER:
 675                         /*
 676                          * Must be a complimentary role - cannot be a client to
 677                          * more than one peer.
 678                          */
 679                         if (incoming == role || client)
 680                                 return P2PS_SETUP_NONE;
 681
 682                         return P2PS_SETUP_CLIENT;
 683
 684                 case P2PS_SETUP_CLIENT:
 685                         /* Must be a complimentary role */
 686                         if (incoming != role) {
 687                                 conncap = P2PS_SETUP_GROUP_OWNER;
 688                                 goto grp_owner;
 689                         }
 690
 691                 default:
 692                         return P2PS_SETUP_NONE;
 693                 }
 694         }
 695
 696         /*
 697          * For now, we only will support ownership of one group, and being a
 698          * client of one group. Therefore, if we have either an existing GO
 699          * group, or an existing client group, we will not do a new GO
 700          * negotiation, but rather try to re-use the existing groups.
 701          */
 702         switch (incoming) {
 703         case P2PS_SETUP_NONE:
 704         case P2PS_SETUP_NEW:
 705                 if (client)
 706                         conncap = P2PS_SETUP_GROUP_OWNER;
 707                 else if (!owned_members)
 708                         conncap = P2PS_SETUP_NEW;
 709                 else if (incoming == P2PS_SETUP_NONE)
 710                         conncap = P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT;
 711                 else
 712                         conncap = P2PS_SETUP_CLIENT;
 713                 break;
 714
 715         case P2PS_SETUP_CLIENT:
 716                 conncap = P2PS_SETUP_GROUP_OWNER;
 717                 break;
 718
 719         case P2PS_SETUP_GROUP_OWNER:
 720                 if (!client)
 721                         conncap = P2PS_SETUP_CLIENT;
 722                 break;
 723
 724         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 725         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 726                 if (client)
 727                         conncap = P2PS_SETUP_GROUP_OWNER;
 728                 else {
 729                         u8 r;
 730
 731                         if (os_get_random(&r, sizeof(r)) < 0 ||
 732                             (r & 1))
 733                                 conncap = P2PS_SETUP_CLIENT;
 734                         else
 735                                 conncap = P2PS_SETUP_GROUP_OWNER;
 736                 }
 737                 break;
 738
 739         default:
 740                 return P2PS_SETUP_NONE;
 741         }
 742
 743 grp_owner:
 744         if ((conncap & P2PS_SETUP_GROUP_OWNER) ||
 745             (!incoming && (conncap & P2PS_SETUP_NEW))) {
 746                 if (go_wpa_s && p2p_client_limit_reached(go_wpa_s->p2p_group))
 747                         conncap &= ~P2PS_SETUP_GROUP_OWNER;
 748                 wpa_printf(MSG_DEBUG, "P2P: GOs:%d members:%d conncap:%d",
 749                            owner, owned_members, conncap);
 750
 751                 s = wpas_p2p_get_persistent_go(wpa_s);
 752
 753                 if (!s && !owner && p2p_no_group_iface) {
 754                         p2p_set_intended_addr(wpa_s->global->p2p,
 755                                               wpa_s->own_addr);
 756                 } else if (!s && !owner) {
 757                         if (wpas_p2p_add_group_interface(wpa_s,
 758                                                          WPA_IF_P2P_GO) < 0) {
 759                                 wpa_printf(MSG_ERROR,
 760                                            "P2P: Failed to allocate a new interface for the group");
 761                                 return P2PS_SETUP_NONE;
 762                         }
 763                         wpa_s->global->pending_group_iface_for_p2ps = 1;
 764                         p2p_set_intended_addr(wpa_s->global->p2p,
 765                                               wpa_s->pending_interface_addr);
 766                 }
 767         }
 768
 769         return conncap;
 770 }
 771
 772
 773 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 774                                  enum p2p_group_removal_reason removal_reason)
 775 {
 776         struct wpa_ssid *ssid;
 777         char *gtype;
 778         const char *reason;
 779
 780         ssid = wpa_s->current_ssid;
 781         if (ssid == NULL) {
 782                 /*
 783                  * The current SSID was not known, but there may still be a
 784                  * pending P2P group interface waiting for provisioning or a
 785                  * P2P group that is trying to reconnect.
 786                  */
 787                 ssid = wpa_s->conf->ssid;
 788                 while (ssid) {
 789                         if (ssid->p2p_group && ssid->disabled != 2)
 790                                 break;
 791                         ssid = ssid->next;
 792                 }
 793                 if (ssid == NULL &&
 794                         wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
 795                 {
 796                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 797                                    "not found");
 798                         return -1;
 799                 }
 800         }
 801         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 802                 gtype = "GO";
 803         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 804                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 805                 wpa_s->reassociate = 0;
 806                 wpa_s->disconnected = 1;
 807                 gtype = "client";
 808         } else
 809                 gtype = "GO";
 810
 811         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 812                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 813
 814         if (os_strcmp(gtype, "client") == 0) {
 815                 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 816                 if (eloop_is_timeout_registered(wpas_p2p_psk_failure_removal,
 817                                                 wpa_s, NULL)) {
 818                         wpa_printf(MSG_DEBUG,
 819                                    "P2P: PSK failure removal was scheduled, so use PSK failure as reason for group removal");
 820                         removal_reason = P2P_GROUP_REMOVAL_PSK_FAILURE;
 821                         eloop_cancel_timeout(wpas_p2p_psk_failure_removal,
 822                                              wpa_s, NULL);
 823                 }
 824         }
 825
 826         if (wpa_s->cross_connect_in_use) {
 827                 wpa_s->cross_connect_in_use = 0;
 828                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 829                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 830                                wpa_s->ifname, wpa_s->cross_connect_uplink);
 831         }
 832         switch (removal_reason) {
 833         case P2P_GROUP_REMOVAL_REQUESTED:
 834                 reason = " reason=REQUESTED";
 835                 break;
 836         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 837                 reason = " reason=FORMATION_FAILED";
 838                 break;
 839         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 840                 reason = " reason=IDLE";
 841                 break;
 842         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 843                 reason = " reason=UNAVAILABLE";
 844                 break;
 845         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 846                 reason = " reason=GO_ENDING_SESSION";
 847                 break;
 848         case P2P_GROUP_REMOVAL_PSK_FAILURE:
 849                 reason = " reason=PSK_FAILURE";
 850                 break;
 851         case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
 852                 reason = " reason=FREQ_CONFLICT";
 853                 break;
 854         default:
 855                 reason = "";
 856                 break;
 857         }
 858         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 859                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 860                                P2P_EVENT_GROUP_REMOVED "%s %s%s",
 861                                wpa_s->ifname, gtype, reason);
 862         }
 863
 864         if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0)
 865                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout");
 866         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 867                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 868         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
 869                                  wpa_s->parent, NULL) > 0) {
 870                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
 871                            "timeout");
 872                 wpa_s->p2p_in_provisioning = 0;
 873         }
 874
 875         wpa_s->p2p_in_invitation = 0;
 876
 877         /*
 878          * Make sure wait for the first client does not remain active after the
 879          * group has been removed.
 880          */
 881         wpa_s->global->p2p_go_wait_client.sec = 0;
 882
 883         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 884                 struct wpa_global *global;
 885                 char *ifname;
 886                 enum wpa_driver_if_type type;
 887                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 888                         wpa_s->ifname);
 889                 global = wpa_s->global;
 890                 ifname = os_strdup(wpa_s->ifname);
 891                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 892                 eloop_cancel_timeout(run_wpas_p2p_disconnect, wpa_s, NULL);
 893                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 894                 wpa_s = global->ifaces;
 895                 if (wpa_s && ifname)
 896                         wpa_drv_if_remove(wpa_s, type, ifname);
 897                 os_free(ifname);
 898                 return 1;
 899         }
 900
 901         if (!wpa_s->p2p_go_group_formation_completed) {
 902                 wpa_s->global->p2p_group_formation = NULL;
 903                 wpa_s->p2p_in_provisioning = 0;
 904         }
 905
 906         wpa_s->show_group_started = 0;
 907         os_free(wpa_s->go_params);
 908         wpa_s->go_params = NULL;
 909
 910         os_free(wpa_s->p2p_group_common_freqs);
 911         wpa_s->p2p_group_common_freqs = NULL;
 912         wpa_s->p2p_group_common_freqs_num = 0;
 913
 914         wpa_s->waiting_presence_resp = 0;
 915
 916         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 917         if (ssid && (ssid->p2p_group ||
 918                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 919                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 920                 int id = ssid->id;
 921                 if (ssid == wpa_s->current_ssid) {
 922                         wpa_sm_set_config(wpa_s->wpa, NULL);
 923                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 924                         wpa_s->current_ssid = NULL;
 925                 }
 926                 /*
 927                  * Networks objects created during any P2P activities are not
 928                  * exposed out as they might/will confuse certain non-P2P aware
 929                  * applications since these network objects won't behave like
 930                  * regular ones.
 931                  *
 932                  * Likewise, we don't send out network removed signals for such
 933                  * network objects.
 934                  */
 935                 wpa_config_remove_network(wpa_s->conf, id);
 936                 wpa_supplicant_clear_status(wpa_s);
 937                 wpa_supplicant_cancel_sched_scan(wpa_s);
 938         } else {
 939                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
 940                            "found");
 941         }
 942         if (wpa_s->ap_iface)
 943                 wpa_supplicant_ap_deinit(wpa_s);
 944         else
 945                 wpa_drv_deinit_p2p_cli(wpa_s);
 946
 947         return 0;
 948 }
 949
 950
 951 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
 952                                      u8 *go_dev_addr,
 953                                      const u8 *ssid, size_t ssid_len)
 954 {
 955         struct wpa_bss *bss;
 956         const u8 *bssid;
 957         struct wpabuf *p2p;
 958         u8 group_capab;
 959         const u8 *addr;
 960
 961         if (wpa_s->go_params)
 962                 bssid = wpa_s->go_params->peer_interface_addr;
 963         else
 964                 bssid = wpa_s->bssid;
 965
 966         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
 967         if (bss == NULL && wpa_s->go_params &&
 968             !is_zero_ether_addr(wpa_s->go_params->peer_device_addr))
 969                 bss = wpa_bss_get_p2p_dev_addr(
 970                         wpa_s, wpa_s->go_params->peer_device_addr);
 971         if (bss == NULL) {
 972                 u8 iface_addr[ETH_ALEN];
 973                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
 974                                            iface_addr) == 0)
 975                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
 976         }
 977         if (bss == NULL) {
 978                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 979                            "group is persistent - BSS " MACSTR " not found",
 980                            MAC2STR(bssid));
 981                 return 0;
 982         }
 983
 984         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
 985         if (p2p == NULL)
 986                 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss,
 987                                                          P2P_IE_VENDOR_TYPE);
 988         if (p2p == NULL) {
 989                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 990                            "group is persistent - BSS " MACSTR
 991                            " did not include P2P IE", MAC2STR(bssid));
 992                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
 993                             (u8 *) (bss + 1), bss->ie_len);
 994                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
 995                             ((u8 *) bss + 1) + bss->ie_len,
 996                             bss->beacon_ie_len);
 997                 return 0;
 998         }
 999
1000         group_capab = p2p_get_group_capab(p2p);
1001         addr = p2p_get_go_dev_addr(p2p);
1002         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
1003                    "group_capab=0x%x", group_capab);
1004         if (addr) {
1005                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
1006                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
1007                            MAC2STR(addr));
1008         } else
1009                 os_memset(go_dev_addr, 0, ETH_ALEN);
1010         wpabuf_free(p2p);
1011
1012         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
1013                    "go_dev_addr=" MACSTR,
1014                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
1015
1016         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
1017 }
1018
1019
1020 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
1021                                            struct wpa_ssid *ssid,
1022                                            const u8 *go_dev_addr)
1023 {
1024         struct wpa_ssid *s;
1025         int changed = 0;
1026
1027         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
1028                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
1029         for (s = wpa_s->conf->ssid; s; s = s->next) {
1030                 if (s->disabled == 2 &&
1031                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
1032                     s->ssid_len == ssid->ssid_len &&
1033                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
1034                         break;
1035         }
1036
1037         if (s) {
1038                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
1039                            "entry");
1040                 if (ssid->passphrase && !s->passphrase)
1041                         changed = 1;
1042                 else if (ssid->passphrase && s->passphrase &&
1043                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
1044                         changed = 1;
1045         } else {
1046                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
1047                            "entry");
1048                 changed = 1;
1049                 s = wpa_config_add_network(wpa_s->conf);
1050                 if (s == NULL)
1051                         return -1;
1052
1053                 /*
1054                  * Instead of network_added we emit persistent_group_added
1055                  * notification. Also to keep the defense checks in
1056                  * persistent_group obj registration method, we set the
1057                  * relevant flags in s to designate it as a persistent group.
1058                  */
1059                 s->p2p_group = 1;
1060                 s->p2p_persistent_group = 1;
1061                 wpas_notify_persistent_group_added(wpa_s, s);
1062                 wpa_config_set_network_defaults(s);
1063         }
1064
1065         s->p2p_group = 1;
1066         s->p2p_persistent_group = 1;
1067         s->disabled = 2;
1068         s->bssid_set = 1;
1069         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
1070         s->mode = ssid->mode;
1071         s->auth_alg = WPA_AUTH_ALG_OPEN;
1072         s->key_mgmt = WPA_KEY_MGMT_PSK;
1073         s->proto = WPA_PROTO_RSN;
1074         s->pairwise_cipher = WPA_CIPHER_CCMP;
1075         s->export_keys = 1;
1076         if (ssid->passphrase) {
1077                 os_free(s->passphrase);
1078                 s->passphrase = os_strdup(ssid->passphrase);
1079         }
1080         if (ssid->psk_set) {
1081                 s->psk_set = 1;
1082                 os_memcpy(s->psk, ssid->psk, 32);
1083         }
1084         if (s->passphrase && !s->psk_set)
1085                 wpa_config_update_psk(s);
1086         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
1087                 os_free(s->ssid);
1088                 s->ssid = os_malloc(ssid->ssid_len);
1089         }
1090         if (s->ssid) {
1091                 s->ssid_len = ssid->ssid_len;
1092                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
1093         }
1094         if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
1095                 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
1096                 wpa_s->global->add_psk = NULL;
1097                 changed = 1;
1098         }
1099
1100         if (changed && wpa_s->conf->update_config &&
1101             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
1102                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1103         }
1104
1105         return s->id;
1106 }
1107
1108
1109 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
1110                                                  const u8 *addr)
1111 {
1112         struct wpa_ssid *ssid, *s;
1113         u8 *n;
1114         size_t i;
1115         int found = 0;
1116         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
1117
1118         ssid = wpa_s->current_ssid;
1119         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
1120             !ssid->p2p_persistent_group)
1121                 return;
1122
1123         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
1124                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
1125                         continue;
1126
1127                 if (s->ssid_len == ssid->ssid_len &&
1128                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
1129                         break;
1130         }
1131
1132         if (s == NULL)
1133                 return;
1134
1135         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
1136                 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, addr,
1137                               ETH_ALEN) != 0)
1138                         continue;
1139
1140                 if (i == s->num_p2p_clients - 1)
1141                         return; /* already the most recent entry */
1142
1143                 /* move the entry to mark it most recent */
1144                 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
1145                            s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
1146                            (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
1147                 os_memcpy(s->p2p_client_list +
1148                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN, addr,
1149                           ETH_ALEN);
1150                 os_memset(s->p2p_client_list +
1151                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1152                           0xff, ETH_ALEN);
1153                 found = 1;
1154                 break;
1155         }
1156
1157         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
1158                 n = os_realloc_array(s->p2p_client_list,
1159                                      s->num_p2p_clients + 1, 2 * ETH_ALEN);
1160                 if (n == NULL)
1161                         return;
1162                 os_memcpy(n + s->num_p2p_clients * 2 * ETH_ALEN, addr,
1163                           ETH_ALEN);
1164                 os_memset(n + s->num_p2p_clients * 2 * ETH_ALEN + ETH_ALEN,
1165                           0xff, ETH_ALEN);
1166                 s->p2p_client_list = n;
1167                 s->num_p2p_clients++;
1168         } else if (!found && s->p2p_client_list) {
1169                 /* Not enough room for an additional entry - drop the oldest
1170                  * entry */
1171                 os_memmove(s->p2p_client_list,
1172                            s->p2p_client_list + 2 * ETH_ALEN,
1173                            (s->num_p2p_clients - 1) * 2 * ETH_ALEN);
1174                 os_memcpy(s->p2p_client_list +
1175                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN,
1176                           addr, ETH_ALEN);
1177                 os_memset(s->p2p_client_list +
1178                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1179                           0xff, ETH_ALEN);
1180         }
1181
1182         if (p2p_wpa_s->conf->update_config &&
1183             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
1184                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1185 }
1186
1187
1188 static void wpas_p2p_group_started(struct wpa_supplicant *wpa_s,
1189                                    int go, struct wpa_ssid *ssid, int freq,
1190                                    const u8 *psk, const char *passphrase,
1191                                    const u8 *go_dev_addr, int persistent,
1192                                    const char *extra)
1193 {
1194         const char *ssid_txt;
1195         char psk_txt[65];
1196
1197         if (psk)
1198                 wpa_snprintf_hex(psk_txt, sizeof(psk_txt), psk, 32);
1199         else
1200                 psk_txt[0] = '\0';
1201
1202         if (ssid)
1203                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
1204         else
1205                 ssid_txt = "";
1206
1207         if (passphrase && passphrase[0] == '\0')
1208                 passphrase = NULL;
1209
1210         /*
1211          * Include PSK/passphrase only in the control interface message and
1212          * leave it out from the debug log entry.
1213          */
1214         wpa_msg_global_ctrl(wpa_s->parent, MSG_INFO,
1215                             P2P_EVENT_GROUP_STARTED
1216                             "%s %s ssid=\"%s\" freq=%d%s%s%s%s%s go_dev_addr="
1217                             MACSTR "%s%s",
1218                             wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1219                             psk ? " psk=" : "", psk_txt,
1220                             passphrase ? " passphrase=\"" : "",
1221                             passphrase ? passphrase : "",
1222                             passphrase ? "\"" : "",
1223                             MAC2STR(go_dev_addr),
1224                             persistent ? " [PERSISTENT]" : "", extra);
1225         wpa_printf(MSG_INFO, P2P_EVENT_GROUP_STARTED
1226                    "%s %s ssid=\"%s\" freq=%d go_dev_addr=" MACSTR "%s%s",
1227                    wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1228                    MAC2STR(go_dev_addr), persistent ? " [PERSISTENT]" : "",
1229                    extra);
1230 }
1231
1232
1233 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
1234                                            int success)
1235 {
1236         struct wpa_ssid *ssid;
1237         int client;
1238         int persistent;
1239         u8 go_dev_addr[ETH_ALEN];
1240         int network_id = -1;
1241
1242         /*
1243          * This callback is likely called for the main interface. Update wpa_s
1244          * to use the group interface if a new interface was created for the
1245          * group.
1246          */
1247         if (wpa_s->global->p2p_group_formation)
1248                 wpa_s = wpa_s->global->p2p_group_formation;
1249         if (wpa_s->p2p_go_group_formation_completed) {
1250                 wpa_s->global->p2p_group_formation = NULL;
1251                 wpa_s->p2p_in_provisioning = 0;
1252         }
1253         wpa_s->p2p_in_invitation = 0;
1254         wpa_s->group_formation_reported = 1;
1255
1256         if (!success) {
1257                 wpa_msg_global(wpa_s->parent, MSG_INFO,
1258                                P2P_EVENT_GROUP_FORMATION_FAILURE);
1259                 wpas_p2p_group_delete(wpa_s,
1260                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
1261                 return;
1262         }
1263
1264         wpa_msg_global(wpa_s->parent, MSG_INFO,
1265                        P2P_EVENT_GROUP_FORMATION_SUCCESS);
1266
1267         ssid = wpa_s->current_ssid;
1268         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
1269                 ssid->mode = WPAS_MODE_P2P_GO;
1270                 p2p_group_notif_formation_done(wpa_s->p2p_group);
1271                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
1272         }
1273
1274         persistent = 0;
1275         if (ssid) {
1276                 client = ssid->mode == WPAS_MODE_INFRA;
1277                 if (ssid->mode == WPAS_MODE_P2P_GO) {
1278                         persistent = ssid->p2p_persistent_group;
1279                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
1280                                   ETH_ALEN);
1281                 } else
1282                         persistent = wpas_p2p_persistent_group(wpa_s,
1283                                                                go_dev_addr,
1284                                                                ssid->ssid,
1285                                                                ssid->ssid_len);
1286         } else {
1287                 client = wpa_s->p2p_group_interface ==
1288                         P2P_GROUP_INTERFACE_CLIENT;
1289                 os_memset(go_dev_addr, 0, ETH_ALEN);
1290         }
1291
1292         wpa_s->show_group_started = 0;
1293         if (client) {
1294                 /*
1295                  * Indicate event only after successfully completed 4-way
1296                  * handshake, i.e., when the interface is ready for data
1297                  * packets.
1298                  */
1299                 wpa_s->show_group_started = 1;
1300         } else {
1301                 wpas_p2p_group_started(wpa_s, 1, ssid,
1302                                        ssid ? ssid->frequency : 0,
1303                                        ssid && ssid->passphrase == NULL &&
1304                                        ssid->psk_set ? ssid->psk : NULL,
1305                                        ssid ? ssid->passphrase : NULL,
1306                                        go_dev_addr, persistent, "");
1307                 wpas_p2p_cross_connect_setup(wpa_s);
1308                 wpas_p2p_set_group_idle_timeout(wpa_s);
1309         }
1310
1311         if (persistent)
1312                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
1313                                                              ssid, go_dev_addr);
1314         else {
1315                 os_free(wpa_s->global->add_psk);
1316                 wpa_s->global->add_psk = NULL;
1317         }
1318         if (network_id < 0 && ssid)
1319                 network_id = ssid->id;
1320         if (!client) {
1321                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1322                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1323         }
1324 }
1325
1326
1327 struct send_action_work {
1328         unsigned int freq;
1329         u8 dst[ETH_ALEN];
1330         u8 src[ETH_ALEN];
1331         u8 bssid[ETH_ALEN];
1332         size_t len;
1333         unsigned int wait_time;
1334         u8 buf[0];
1335 };
1336
1337
1338 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
1339                                               void *timeout_ctx)
1340 {
1341         struct wpa_supplicant *wpa_s = eloop_ctx;
1342
1343         if (!wpa_s->p2p_send_action_work)
1344                 return;
1345
1346         wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
1347         os_free(wpa_s->p2p_send_action_work->ctx);
1348         radio_work_done(wpa_s->p2p_send_action_work);
1349         wpa_s->p2p_send_action_work = NULL;
1350 }
1351
1352
1353 static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s)
1354 {
1355         if (wpa_s->p2p_send_action_work) {
1356                 struct send_action_work *awork;
1357                 awork = wpa_s->p2p_send_action_work->ctx;
1358                 if (awork->wait_time == 0) {
1359                         os_free(awork);
1360                         radio_work_done(wpa_s->p2p_send_action_work);
1361                         wpa_s->p2p_send_action_work = NULL;
1362                 } else {
1363                         /*
1364                          * In theory, this should not be needed, but number of
1365                          * places in the P2P code is still using non-zero wait
1366                          * time for the last Action frame in the sequence and
1367                          * some of these do not call send_action_done().
1368                          */
1369                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1370                                              wpa_s, NULL);
1371                         eloop_register_timeout(
1372                                 0, awork->wait_time * 1000,
1373                                 wpas_p2p_send_action_work_timeout,
1374                                 wpa_s, NULL);
1375                 }
1376         }
1377 }
1378
1379
1380 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
1381                                            unsigned int freq,
1382                                            const u8 *dst, const u8 *src,
1383                                            const u8 *bssid,
1384                                            const u8 *data, size_t data_len,
1385                                            enum offchannel_send_action_result
1386                                            result)
1387 {
1388         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
1389
1390         wpas_p2p_action_tx_clear(wpa_s);
1391
1392         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
1393                 return;
1394
1395         switch (result) {
1396         case OFFCHANNEL_SEND_ACTION_SUCCESS:
1397                 res = P2P_SEND_ACTION_SUCCESS;
1398                 break;
1399         case OFFCHANNEL_SEND_ACTION_NO_ACK:
1400                 res = P2P_SEND_ACTION_NO_ACK;
1401                 break;
1402         case OFFCHANNEL_SEND_ACTION_FAILED:
1403                 res = P2P_SEND_ACTION_FAILED;
1404                 break;
1405         }
1406
1407         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
1408
1409         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
1410             wpa_s->pending_pd_before_join &&
1411             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
1412              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
1413             wpa_s->p2p_fallback_to_go_neg) {
1414                 wpa_s->pending_pd_before_join = 0;
1415                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
1416                         "during p2p_connect-auto");
1417                 wpa_msg_global(wpa_s->parent, MSG_INFO,
1418                                P2P_EVENT_FALLBACK_TO_GO_NEG
1419                                "reason=no-ACK-to-PD-Req");
1420                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
1421                 return;
1422         }
1423 }
1424
1425
1426 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
1427 {
1428         struct wpa_supplicant *wpa_s = work->wpa_s;
1429         struct send_action_work *awork = work->ctx;
1430
1431         if (deinit) {
1432                 if (work->started) {
1433                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1434                                              wpa_s, NULL);
1435                         wpa_s->p2p_send_action_work = NULL;
1436                         offchannel_send_action_done(wpa_s);
1437                 }
1438                 os_free(awork);
1439                 return;
1440         }
1441
1442         if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1443                                    awork->bssid, awork->buf, awork->len,
1444                                    awork->wait_time,
1445                                    wpas_p2p_send_action_tx_status, 1) < 0) {
1446                 os_free(awork);
1447                 radio_work_done(work);
1448                 return;
1449         }
1450         wpa_s->p2p_send_action_work = work;
1451 }
1452
1453
1454 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1455                                  unsigned int freq, const u8 *dst,
1456                                  const u8 *src, const u8 *bssid, const u8 *buf,
1457                                  size_t len, unsigned int wait_time)
1458 {
1459         struct send_action_work *awork;
1460
1461         if (wpa_s->p2p_send_action_work) {
1462                 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1463                 return -1;
1464         }
1465
1466         awork = os_zalloc(sizeof(*awork) + len);
1467         if (awork == NULL)
1468                 return -1;
1469
1470         awork->freq = freq;
1471         os_memcpy(awork->dst, dst, ETH_ALEN);
1472         os_memcpy(awork->src, src, ETH_ALEN);
1473         os_memcpy(awork->bssid, bssid, ETH_ALEN);
1474         awork->len = len;
1475         awork->wait_time = wait_time;
1476         os_memcpy(awork->buf, buf, len);
1477
1478         if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
1479                            wpas_send_action_cb, awork) < 0) {
1480                 os_free(awork);
1481                 return -1;
1482         }
1483
1484         return 0;
1485 }
1486
1487
1488 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1489                             const u8 *src, const u8 *bssid, const u8 *buf,
1490                             size_t len, unsigned int wait_time)
1491 {
1492         struct wpa_supplicant *wpa_s = ctx;
1493         int listen_freq = -1, send_freq = -1;
1494
1495         if (wpa_s->p2p_listen_work)
1496                 listen_freq = wpa_s->p2p_listen_work->freq;
1497         if (wpa_s->p2p_send_action_work)
1498                 send_freq = wpa_s->p2p_send_action_work->freq;
1499         if (listen_freq != (int) freq && send_freq != (int) freq) {
1500                 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)",
1501                            listen_freq, send_freq);
1502                 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1503                                              len, wait_time);
1504         }
1505
1506         wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1507         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1508                                       wait_time,
1509                                       wpas_p2p_send_action_tx_status, 1);
1510 }
1511
1512
1513 static void wpas_send_action_done(void *ctx)
1514 {
1515         struct wpa_supplicant *wpa_s = ctx;
1516
1517         if (wpa_s->p2p_send_action_work) {
1518                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1519                                      wpa_s, NULL);
1520                 os_free(wpa_s->p2p_send_action_work->ctx);
1521                 radio_work_done(wpa_s->p2p_send_action_work);
1522                 wpa_s->p2p_send_action_work = NULL;
1523         }
1524
1525         offchannel_send_action_done(wpa_s);
1526 }
1527
1528
1529 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1530                                     struct p2p_go_neg_results *params)
1531 {
1532         if (wpa_s->go_params == NULL) {
1533                 wpa_s->go_params = os_malloc(sizeof(*params));
1534                 if (wpa_s->go_params == NULL)
1535                         return -1;
1536         }
1537         os_memcpy(wpa_s->go_params, params, sizeof(*params));
1538         return 0;
1539 }
1540
1541
1542 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1543                                     struct p2p_go_neg_results *res)
1544 {
1545         wpa_s->group_formation_reported = 0;
1546         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
1547                    " dev_addr " MACSTR " wps_method %d",
1548                    MAC2STR(res->peer_interface_addr),
1549                    MAC2STR(res->peer_device_addr), res->wps_method);
1550         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1551                           res->ssid, res->ssid_len);
1552         wpa_supplicant_ap_deinit(wpa_s);
1553         wpas_copy_go_neg_results(wpa_s, res);
1554         if (res->wps_method == WPS_PBC) {
1555                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
1556 #ifdef CONFIG_WPS_NFC
1557         } else if (res->wps_method == WPS_NFC) {
1558                 wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
1559                                    res->peer_interface_addr,
1560                                    wpa_s->parent->p2p_oob_dev_pw,
1561                                    wpa_s->parent->p2p_oob_dev_pw_id, 1,
1562                                    wpa_s->parent->p2p_oob_dev_pw_id ==
1563                                    DEV_PW_NFC_CONNECTION_HANDOVER ?
1564                                    wpa_s->parent->p2p_peer_oob_pubkey_hash :
1565                                    NULL,
1566                                    NULL, 0, 0);
1567 #endif /* CONFIG_WPS_NFC */
1568         } else {
1569                 u16 dev_pw_id = DEV_PW_DEFAULT;
1570                 if (wpa_s->p2p_wps_method == WPS_P2PS)
1571                         dev_pw_id = DEV_PW_P2PS_DEFAULT;
1572                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1573                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1574                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1575                                    wpa_s->p2p_pin, 1, dev_pw_id);
1576         }
1577 }
1578
1579
1580 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1581                                   struct wpa_ssid *ssid)
1582 {
1583         struct wpa_ssid *persistent;
1584         struct psk_list_entry *psk;
1585         struct hostapd_data *hapd;
1586
1587         if (!wpa_s->ap_iface)
1588                 return;
1589
1590         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
1591                                              ssid->ssid_len);
1592         if (persistent == NULL)
1593                 return;
1594
1595         hapd = wpa_s->ap_iface->bss[0];
1596
1597         dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1598                          list) {
1599                 struct hostapd_wpa_psk *hpsk;
1600
1601                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1602                         MACSTR " psk=%d",
1603                         MAC2STR(psk->addr), psk->p2p);
1604                 hpsk = os_zalloc(sizeof(*hpsk));
1605                 if (hpsk == NULL)
1606                         break;
1607                 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1608                 if (psk->p2p)
1609                         os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1610                 else
1611                         os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1612                 hpsk->next = hapd->conf->ssid.wpa_psk;
1613                 hapd->conf->ssid.wpa_psk = hpsk;
1614         }
1615 }
1616
1617
1618 static void p2p_go_dump_common_freqs(struct wpa_supplicant *wpa_s)
1619 {
1620         unsigned int i;
1621
1622         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Common group frequencies (len=%u):",
1623                 wpa_s->p2p_group_common_freqs_num);
1624
1625         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++)
1626                 wpa_dbg(wpa_s, MSG_DEBUG, "freq[%u]: %d",
1627                         i, wpa_s->p2p_group_common_freqs[i]);
1628 }
1629
1630
1631 static void p2p_go_save_group_common_freqs(struct wpa_supplicant *wpa_s,
1632                                            struct p2p_go_neg_results *params)
1633 {
1634         unsigned int i, len = int_array_len(wpa_s->go_params->freq_list);
1635
1636         wpa_s->p2p_group_common_freqs_num = 0;
1637         os_free(wpa_s->p2p_group_common_freqs);
1638         wpa_s->p2p_group_common_freqs = os_calloc(len, sizeof(int));
1639         if (!wpa_s->p2p_group_common_freqs)
1640                 return;
1641
1642         for (i = 0; i < len; i++) {
1643                 if (!wpa_s->go_params->freq_list[i])
1644                         break;
1645                 wpa_s->p2p_group_common_freqs[i] =
1646                         wpa_s->go_params->freq_list[i];
1647         }
1648         wpa_s->p2p_group_common_freqs_num = i;
1649 }
1650
1651
1652 static void p2p_config_write(struct wpa_supplicant *wpa_s)
1653 {
1654 #ifndef CONFIG_NO_CONFIG_WRITE
1655         if (wpa_s->parent->conf->update_config &&
1656             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
1657                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1658 #endif /* CONFIG_NO_CONFIG_WRITE */
1659 }
1660
1661
1662 static void p2p_go_configured(void *ctx, void *data)
1663 {
1664         struct wpa_supplicant *wpa_s = ctx;
1665         struct p2p_go_neg_results *params = data;
1666         struct wpa_ssid *ssid;
1667         int network_id = -1;
1668
1669         p2p_go_save_group_common_freqs(wpa_s, params);
1670         p2p_go_dump_common_freqs(wpa_s);
1671
1672         ssid = wpa_s->current_ssid;
1673         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1674                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1675                 if (wpa_s->global->p2p_group_formation == wpa_s)
1676                         wpa_s->global->p2p_group_formation = NULL;
1677                 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency,
1678                                        params->passphrase[0] == '\0' ?
1679                                        params->psk : NULL,
1680                                        params->passphrase,
1681                                        wpa_s->global->p2p_dev_addr,
1682                                        params->persistent_group, "");
1683                 wpa_s->group_formation_reported = 1;
1684
1685                 if (wpa_s->parent->p2ps_join_addr_valid) {
1686                         wpa_dbg(wpa_s, MSG_DEBUG,
1687                                 "P2PS: Setting default PIN for " MACSTR,
1688                                 MAC2STR(wpa_s->parent->p2ps_join_addr));
1689                         wpa_supplicant_ap_wps_pin(wpa_s,
1690                                                   wpa_s->parent->p2ps_join_addr,
1691                                                   "12345670", NULL, 0, 0);
1692                         wpa_s->parent->p2ps_join_addr_valid = 0;
1693                 }
1694
1695                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1696                 if (params->persistent_group) {
1697                         network_id = wpas_p2p_store_persistent_group(
1698                                 wpa_s->parent, ssid,
1699                                 wpa_s->global->p2p_dev_addr);
1700                         wpas_p2p_add_psk_list(wpa_s, ssid);
1701                 }
1702                 if (network_id < 0)
1703                         network_id = ssid->id;
1704                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1705                 wpas_p2p_cross_connect_setup(wpa_s);
1706                 wpas_p2p_set_group_idle_timeout(wpa_s);
1707
1708                 if (wpa_s->p2p_first_connection_timeout) {
1709                         wpa_dbg(wpa_s, MSG_DEBUG,
1710                                 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1711                                 wpa_s->p2p_first_connection_timeout);
1712                         wpa_s->p2p_go_group_formation_completed = 0;
1713                         wpa_s->global->p2p_group_formation = wpa_s;
1714                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1715                                              wpa_s->parent, NULL);
1716                         eloop_register_timeout(
1717                                 wpa_s->p2p_first_connection_timeout, 0,
1718                                 wpas_p2p_group_formation_timeout,
1719                                 wpa_s->parent, NULL);
1720                 }
1721
1722                 return;
1723         }
1724
1725         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1726         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1727                                               params->peer_interface_addr)) {
1728                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1729                            "filtering");
1730                 return;
1731         }
1732         if (params->wps_method == WPS_PBC) {
1733                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1734                                           params->peer_device_addr);
1735 #ifdef CONFIG_WPS_NFC
1736         } else if (params->wps_method == WPS_NFC) {
1737                 if (wpa_s->parent->p2p_oob_dev_pw_id !=
1738                     DEV_PW_NFC_CONNECTION_HANDOVER &&
1739                     !wpa_s->parent->p2p_oob_dev_pw) {
1740                         wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1741                         return;
1742                 }
1743                 wpas_ap_wps_add_nfc_pw(
1744                         wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
1745                         wpa_s->parent->p2p_oob_dev_pw,
1746                         wpa_s->parent->p2p_peer_oob_pk_hash_known ?
1747                         wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
1748 #endif /* CONFIG_WPS_NFC */
1749         } else if (wpa_s->p2p_pin[0])
1750                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1751                                           wpa_s->p2p_pin, NULL, 0, 0);
1752         os_free(wpa_s->go_params);
1753         wpa_s->go_params = NULL;
1754 }
1755
1756
1757 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1758                               struct p2p_go_neg_results *params,
1759                               int group_formation)
1760 {
1761         struct wpa_ssid *ssid;
1762
1763         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1764         if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1765                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1766                         "results");
1767                 return;
1768         }
1769
1770         ssid = wpa_config_add_network(wpa_s->conf);
1771         if (ssid == NULL) {
1772                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1773                 return;
1774         }
1775
1776         wpa_s->show_group_started = 0;
1777         wpa_s->p2p_go_group_formation_completed = 0;
1778         wpa_s->group_formation_reported = 0;
1779
1780         wpa_config_set_network_defaults(ssid);
1781         ssid->temporary = 1;
1782         ssid->p2p_group = 1;
1783         ssid->p2p_persistent_group = params->persistent_group;
1784         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1785                 WPAS_MODE_P2P_GO;
1786         ssid->frequency = params->freq;
1787         ssid->ht40 = params->ht40;
1788         ssid->vht = params->vht;
1789         ssid->ssid = os_zalloc(params->ssid_len + 1);
1790         if (ssid->ssid) {
1791                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1792                 ssid->ssid_len = params->ssid_len;
1793         }
1794         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1795         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1796         ssid->proto = WPA_PROTO_RSN;
1797         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1798         ssid->group_cipher = WPA_CIPHER_CCMP;
1799         if (params->freq > 56160) {
1800                 /*
1801                  * Enable GCMP instead of CCMP as pairwise_cipher and
1802                  * group_cipher in 60 GHz.
1803                  */
1804                 ssid->pairwise_cipher = WPA_CIPHER_GCMP;
1805                 ssid->group_cipher = WPA_CIPHER_GCMP;
1806         }
1807         if (os_strlen(params->passphrase) > 0) {
1808                 ssid->passphrase = os_strdup(params->passphrase);
1809                 if (ssid->passphrase == NULL) {
1810                         wpa_msg_global(wpa_s, MSG_ERROR,
1811                                        "P2P: Failed to copy passphrase for GO");
1812                         wpa_config_remove_network(wpa_s->conf, ssid->id);
1813                         return;
1814                 }
1815         } else
1816                 ssid->passphrase = NULL;
1817         ssid->psk_set = params->psk_set;
1818         if (ssid->psk_set)
1819                 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1820         else if (ssid->passphrase)
1821                 wpa_config_update_psk(ssid);
1822         ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
1823
1824         wpa_s->ap_configured_cb = p2p_go_configured;
1825         wpa_s->ap_configured_cb_ctx = wpa_s;
1826         wpa_s->ap_configured_cb_data = wpa_s->go_params;
1827         wpa_s->scan_req = NORMAL_SCAN_REQ;
1828         wpa_s->connect_without_scan = ssid;
1829         wpa_s->reassociate = 1;
1830         wpa_s->disconnected = 0;
1831         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1832                 "start GO)");
1833         wpa_supplicant_req_scan(wpa_s, 0, 0);
1834 }
1835
1836
1837 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1838                                   const struct wpa_supplicant *src)
1839 {
1840         struct wpa_config *d;
1841         const struct wpa_config *s;
1842
1843         d = dst->conf;
1844         s = src->conf;
1845
1846 #define C(n) if (s->n) d->n = os_strdup(s->n)
1847         C(device_name);
1848         C(manufacturer);
1849         C(model_name);
1850         C(model_number);
1851         C(serial_number);
1852         C(config_methods);
1853 #undef C
1854
1855         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1856         os_memcpy(d->sec_device_type, s->sec_device_type,
1857                   sizeof(d->sec_device_type));
1858         d->num_sec_device_types = s->num_sec_device_types;
1859
1860         d->p2p_group_idle = s->p2p_group_idle;
1861         d->p2p_intra_bss = s->p2p_intra_bss;
1862         d->persistent_reconnect = s->persistent_reconnect;
1863         d->max_num_sta = s->max_num_sta;
1864         d->pbc_in_m1 = s->pbc_in_m1;
1865         d->ignore_old_scan_res = s->ignore_old_scan_res;
1866         d->beacon_int = s->beacon_int;
1867         d->dtim_period = s->dtim_period;
1868         d->p2p_go_ctwindow = s->p2p_go_ctwindow;
1869         d->disassoc_low_ack = s->disassoc_low_ack;
1870         d->disable_scan_offload = s->disable_scan_offload;
1871         d->passive_scan = s->passive_scan;
1872
1873         if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey) {
1874                 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
1875                 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
1876         }
1877 }
1878
1879
1880 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
1881                                       char *ifname, size_t len)
1882 {
1883         char *ifname_ptr = wpa_s->ifname;
1884
1885         if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
1886                        os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
1887                 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
1888         }
1889
1890         os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
1891         if (os_strlen(ifname) >= IFNAMSIZ &&
1892             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
1893                 int res;
1894
1895                 /* Try to avoid going over the IFNAMSIZ length limit */
1896                 res = os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
1897                 if (os_snprintf_error(len, res) && len)
1898                         ifname[len - 1] = '\0';
1899         }
1900 }
1901
1902
1903 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
1904                                         enum wpa_driver_if_type type)
1905 {
1906         char ifname[120], force_ifname[120];
1907
1908         if (wpa_s->pending_interface_name[0]) {
1909                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
1910                            "- skip creation of a new one");
1911                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
1912                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
1913                                    "unknown?! ifname='%s'",
1914                                    wpa_s->pending_interface_name);
1915                         return -1;
1916                 }
1917                 return 0;
1918         }
1919
1920         wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
1921         force_ifname[0] = '\0';
1922
1923         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
1924                    ifname);
1925         wpa_s->p2p_group_idx++;
1926
1927         wpa_s->pending_interface_type = type;
1928         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
1929                            wpa_s->pending_interface_addr, NULL) < 0) {
1930                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
1931                            "interface");
1932                 return -1;
1933         }
1934
1935         if (force_ifname[0]) {
1936                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
1937                            force_ifname);
1938                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
1939                            sizeof(wpa_s->pending_interface_name));
1940         } else
1941                 os_strlcpy(wpa_s->pending_interface_name, ifname,
1942                            sizeof(wpa_s->pending_interface_name));
1943         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
1944                    MACSTR, wpa_s->pending_interface_name,
1945                    MAC2STR(wpa_s->pending_interface_addr));
1946
1947         return 0;
1948 }
1949
1950
1951 static void wpas_p2p_remove_pending_group_interface(
1952         struct wpa_supplicant *wpa_s)
1953 {
1954         if (!wpa_s->pending_interface_name[0] ||
1955             is_zero_ether_addr(wpa_s->pending_interface_addr))
1956                 return; /* No pending virtual interface */
1957
1958         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
1959                    wpa_s->pending_interface_name);
1960         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
1961                           wpa_s->pending_interface_name);
1962         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1963         wpa_s->pending_interface_name[0] = '\0';
1964         wpa_s->global->pending_group_iface_for_p2ps = 0;
1965 }
1966
1967
1968 static struct wpa_supplicant *
1969 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
1970 {
1971         struct wpa_interface iface;
1972         struct wpa_supplicant *group_wpa_s;
1973
1974         if (!wpa_s->pending_interface_name[0]) {
1975                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
1976                 if (!wpas_p2p_create_iface(wpa_s))
1977                         return NULL;
1978                 /*
1979                  * Something has forced us to remove the pending interface; try
1980                  * to create a new one and hope for the best that we will get
1981                  * the same local address.
1982                  */
1983                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
1984                                                  WPA_IF_P2P_CLIENT) < 0)
1985                         return NULL;
1986         }
1987
1988         os_memset(&iface, 0, sizeof(iface));
1989         iface.ifname = wpa_s->pending_interface_name;
1990         iface.driver = wpa_s->driver->name;
1991         if (wpa_s->conf->ctrl_interface == NULL &&
1992             wpa_s->parent != wpa_s &&
1993             wpa_s->p2p_mgmt &&
1994             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
1995                 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
1996         else
1997                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
1998         iface.driver_param = wpa_s->conf->driver_param;
1999         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
2000         if (group_wpa_s == NULL) {
2001                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
2002                            "wpa_supplicant interface");
2003                 return NULL;
2004         }
2005         wpa_s->pending_interface_name[0] = '\0';
2006         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
2007                 P2P_GROUP_INTERFACE_CLIENT;
2008         wpa_s->global->p2p_group_formation = group_wpa_s;
2009         wpa_s->global->pending_group_iface_for_p2ps = 0;
2010
2011         wpas_p2p_clone_config(group_wpa_s, wpa_s);
2012
2013         return group_wpa_s;
2014 }
2015
2016
2017 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
2018                                              void *timeout_ctx)
2019 {
2020         struct wpa_supplicant *wpa_s = eloop_ctx;
2021         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
2022         wpas_p2p_group_formation_failed(wpa_s);
2023 }
2024
2025
2026 void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s)
2027 {
2028         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2029                              wpa_s->parent, NULL);
2030         if (wpa_s->global->p2p)
2031                 p2p_group_formation_failed(wpa_s->global->p2p);
2032         wpas_group_formation_completed(wpa_s, 0);
2033 }
2034
2035
2036 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
2037 {
2038         wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
2039         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2040                              wpa_s->parent, NULL);
2041         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2042                                wpa_s->parent, NULL);
2043         wpa_s->global->p2p_fail_on_wps_complete = 0;
2044 }
2045
2046
2047 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
2048 {
2049         if (wpa_s->global->p2p_group_formation != wpa_s)
2050                 return;
2051         /* Speed up group formation timeout since this cannot succeed */
2052         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2053                              wpa_s->parent, NULL);
2054         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2055                                wpa_s->parent, NULL);
2056 }
2057
2058
2059 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
2060 {
2061         struct wpa_supplicant *wpa_s = ctx;
2062
2063         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2064                 wpa_drv_cancel_remain_on_channel(wpa_s);
2065                 wpa_s->off_channel_freq = 0;
2066                 wpa_s->roc_waiting_drv_freq = 0;
2067         }
2068
2069         if (res->status) {
2070                 wpa_msg_global(wpa_s, MSG_INFO,
2071                                P2P_EVENT_GO_NEG_FAILURE "status=%d",
2072                                res->status);
2073                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
2074                 wpas_p2p_remove_pending_group_interface(wpa_s);
2075                 return;
2076         }
2077
2078         if (wpa_s->p2p_go_ht40)
2079                 res->ht40 = 1;
2080         if (wpa_s->p2p_go_vht)
2081                 res->vht = 1;
2082
2083         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
2084                        "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
2085                        " wps_method=%s",
2086                        res->role_go ? "GO" : "client", res->freq, res->ht40,
2087                        MAC2STR(res->peer_device_addr),
2088                        MAC2STR(res->peer_interface_addr),
2089                        p2p_wps_method_text(res->wps_method));
2090         wpas_notify_p2p_go_neg_completed(wpa_s, res);
2091
2092         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
2093                 struct wpa_ssid *ssid;
2094                 ssid = wpa_config_get_network(wpa_s->conf,
2095                                               wpa_s->p2p_persistent_id);
2096                 if (ssid && ssid->disabled == 2 &&
2097                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
2098                         size_t len = os_strlen(ssid->passphrase);
2099                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
2100                                    "on requested persistent group");
2101                         os_memcpy(res->passphrase, ssid->passphrase, len);
2102                         res->passphrase[len] = '\0';
2103                 }
2104         }
2105
2106         if (wpa_s->create_p2p_iface) {
2107                 struct wpa_supplicant *group_wpa_s =
2108                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
2109                 if (group_wpa_s == NULL) {
2110                         wpas_p2p_remove_pending_group_interface(wpa_s);
2111                         eloop_cancel_timeout(wpas_p2p_long_listen_timeout,
2112                                              wpa_s, NULL);
2113                         wpas_p2p_group_formation_failed(wpa_s);
2114                         return;
2115                 }
2116                 if (group_wpa_s != wpa_s) {
2117                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
2118                                   sizeof(group_wpa_s->p2p_pin));
2119                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
2120                 }
2121                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2122                 wpa_s->pending_interface_name[0] = '\0';
2123                 group_wpa_s->p2p_in_provisioning = 1;
2124
2125                 if (res->role_go)
2126                         wpas_start_wps_go(group_wpa_s, res, 1);
2127                 else
2128                         wpas_start_wps_enrollee(group_wpa_s, res);
2129         } else {
2130                 wpa_s->p2p_in_provisioning = 1;
2131                 wpa_s->global->p2p_group_formation = wpa_s;
2132
2133                 if (res->role_go)
2134                         wpas_start_wps_go(wpa_s, res, 1);
2135                 else
2136                         wpas_start_wps_enrollee(ctx, res);
2137         }
2138
2139         wpa_s->p2p_long_listen = 0;
2140         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2141
2142         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2143         eloop_register_timeout(15 + res->peer_config_timeout / 100,
2144                                (res->peer_config_timeout % 100) * 10000,
2145                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
2146 }
2147
2148
2149 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id,
2150                                u8 go_intent)
2151 {
2152         struct wpa_supplicant *wpa_s = ctx;
2153         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
2154                        " dev_passwd_id=%u go_intent=%u", MAC2STR(src),
2155                        dev_passwd_id, go_intent);
2156
2157         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id, go_intent);
2158 }
2159
2160
2161 static void wpas_dev_found(void *ctx, const u8 *addr,
2162                            const struct p2p_peer_info *info,
2163                            int new_device)
2164 {
2165 #ifndef CONFIG_NO_STDOUT_DEBUG
2166         struct wpa_supplicant *wpa_s = ctx;
2167         char devtype[WPS_DEV_TYPE_BUFSIZE];
2168         char *wfd_dev_info_hex = NULL;
2169
2170 #ifdef CONFIG_WIFI_DISPLAY
2171         wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
2172                                                     WFD_SUBELEM_DEVICE_INFO);
2173 #endif /* CONFIG_WIFI_DISPLAY */
2174
2175         if (info->p2ps_instance) {
2176                 char str[256];
2177                 const u8 *buf = wpabuf_head(info->p2ps_instance);
2178                 size_t len = wpabuf_len(info->p2ps_instance);
2179
2180                 while (len) {
2181                         u32 id;
2182                         u16 methods;
2183                         u8 str_len;
2184
2185                         if (len < 4 + 2 + 1)
2186                                 break;
2187                         id = WPA_GET_LE32(buf);
2188                         buf += sizeof(u32);
2189                         methods = WPA_GET_BE16(buf);
2190                         buf += sizeof(u16);
2191                         str_len = *buf++;
2192                         if (str_len > len - 4 - 2 - 1)
2193                                 break;
2194                         os_memcpy(str, buf, str_len);
2195                         str[str_len] = '\0';
2196                         buf += str_len;
2197                         len -= str_len + sizeof(u32) + sizeof(u16) + sizeof(u8);
2198
2199                         wpa_msg_global(wpa_s, MSG_INFO,
2200                                        P2P_EVENT_DEVICE_FOUND MACSTR
2201                                        " p2p_dev_addr=" MACSTR
2202                                        " pri_dev_type=%s name='%s'"
2203                                        " config_methods=0x%x"
2204                                        " dev_capab=0x%x"
2205                                        " group_capab=0x%x"
2206                                        " adv_id=%x asp_svc=%s%s",
2207                                        MAC2STR(addr),
2208                                        MAC2STR(info->p2p_device_addr),
2209                                        wps_dev_type_bin2str(
2210                                                info->pri_dev_type,
2211                                                devtype, sizeof(devtype)),
2212                                        info->device_name, methods,
2213                                        info->dev_capab, info->group_capab,
2214                                        id, str,
2215                                        info->vendor_elems ?
2216                                        " vendor_elems=1" : "");
2217                 }
2218                 goto done;
2219         }
2220
2221         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
2222                        " p2p_dev_addr=" MACSTR
2223                        " pri_dev_type=%s name='%s' config_methods=0x%x "
2224                        "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d",
2225                        MAC2STR(addr), MAC2STR(info->p2p_device_addr),
2226                        wps_dev_type_bin2str(info->pri_dev_type, devtype,
2227                                             sizeof(devtype)),
2228                        info->device_name, info->config_methods,
2229                        info->dev_capab, info->group_capab,
2230                        wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
2231                        wfd_dev_info_hex ? wfd_dev_info_hex : "",
2232                        info->vendor_elems ? " vendor_elems=1" : "",
2233                        new_device);
2234
2235 done:
2236         os_free(wfd_dev_info_hex);
2237 #endif /* CONFIG_NO_STDOUT_DEBUG */
2238
2239         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
2240 }
2241
2242
2243 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
2244 {
2245         struct wpa_supplicant *wpa_s = ctx;
2246
2247         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
2248                        "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
2249
2250         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
2251 }
2252
2253
2254 static void wpas_find_stopped(void *ctx)
2255 {
2256         struct wpa_supplicant *wpa_s = ctx;
2257         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
2258         wpas_notify_p2p_find_stopped(wpa_s);
2259 }
2260
2261
2262 struct wpas_p2p_listen_work {
2263         unsigned int freq;
2264         unsigned int duration;
2265         struct wpabuf *probe_resp_ie;
2266 };
2267
2268
2269 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
2270 {
2271         if (lwork == NULL)
2272                 return;
2273         wpabuf_free(lwork->probe_resp_ie);
2274         os_free(lwork);
2275 }
2276
2277
2278 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
2279 {
2280         struct wpas_p2p_listen_work *lwork;
2281
2282         if (!wpa_s->p2p_listen_work)
2283                 return;
2284
2285         lwork = wpa_s->p2p_listen_work->ctx;
2286         wpas_p2p_listen_work_free(lwork);
2287         radio_work_done(wpa_s->p2p_listen_work);
2288         wpa_s->p2p_listen_work = NULL;
2289 }
2290
2291
2292 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
2293 {
2294         struct wpa_supplicant *wpa_s = work->wpa_s;
2295         struct wpas_p2p_listen_work *lwork = work->ctx;
2296         unsigned int duration;
2297
2298         if (deinit) {
2299                 if (work->started) {
2300                         wpa_s->p2p_listen_work = NULL;
2301                         wpas_stop_listen(wpa_s);
2302                 }
2303                 wpas_p2p_listen_work_free(lwork);
2304                 return;
2305         }
2306
2307         wpa_s->p2p_listen_work = work;
2308
2309         wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
2310
2311         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
2312                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
2313                            "report received Probe Request frames");
2314                 wpas_p2p_listen_work_done(wpa_s);
2315                 return;
2316         }
2317
2318         wpa_s->pending_listen_freq = lwork->freq;
2319         wpa_s->pending_listen_duration = lwork->duration;
2320
2321         duration = lwork->duration;
2322 #ifdef CONFIG_TESTING_OPTIONS
2323         if (wpa_s->extra_roc_dur) {
2324                 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u",
2325                            duration, duration + wpa_s->extra_roc_dur);
2326                 duration += wpa_s->extra_roc_dur;
2327         }
2328 #endif /* CONFIG_TESTING_OPTIONS */
2329
2330         if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) {
2331                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
2332                            "to remain on channel (%u MHz) for Listen "
2333                            "state", lwork->freq);
2334                 wpas_p2p_listen_work_done(wpa_s);
2335                 wpa_s->pending_listen_freq = 0;
2336                 return;
2337         }
2338         wpa_s->off_channel_freq = 0;
2339         wpa_s->roc_waiting_drv_freq = lwork->freq;
2340 }
2341
2342
2343 static int wpas_start_listen(void *ctx, unsigned int freq,
2344                              unsigned int duration,
2345                              const struct wpabuf *probe_resp_ie)
2346 {
2347         struct wpa_supplicant *wpa_s = ctx;
2348         struct wpas_p2p_listen_work *lwork;
2349
2350         if (wpa_s->p2p_listen_work) {
2351                 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
2352                 return -1;
2353         }
2354
2355         lwork = os_zalloc(sizeof(*lwork));
2356         if (lwork == NULL)
2357                 return -1;
2358         lwork->freq = freq;
2359         lwork->duration = duration;
2360         if (probe_resp_ie) {
2361                 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
2362                 if (lwork->probe_resp_ie == NULL) {
2363                         wpas_p2p_listen_work_free(lwork);
2364                         return -1;
2365                 }
2366         }
2367
2368         if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
2369                            lwork) < 0) {
2370                 wpas_p2p_listen_work_free(lwork);
2371                 return -1;
2372         }
2373
2374         return 0;
2375 }
2376
2377
2378 static void wpas_stop_listen(void *ctx)
2379 {
2380         struct wpa_supplicant *wpa_s = ctx;
2381         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2382                 wpa_drv_cancel_remain_on_channel(wpa_s);
2383                 wpa_s->off_channel_freq = 0;
2384                 wpa_s->roc_waiting_drv_freq = 0;
2385         }
2386         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
2387         wpa_drv_probe_req_report(wpa_s, 0);
2388         wpas_p2p_listen_work_done(wpa_s);
2389 }
2390
2391
2392 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf)
2393 {
2394         struct wpa_supplicant *wpa_s = ctx;
2395         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1);
2396 }
2397
2398
2399 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2400                                          const u8 *peer, const char *params,
2401                                          unsigned int generated_pin)
2402 {
2403         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2404                        " %08d%s", MAC2STR(peer), generated_pin, params);
2405 }
2406
2407
2408 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2409                                         const u8 *peer, const char *params)
2410 {
2411         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2412                        "%s", MAC2STR(peer), params);
2413 }
2414
2415
2416 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2417                                const u8 *dev_addr, const u8 *pri_dev_type,
2418                                const char *dev_name, u16 supp_config_methods,
2419                                u8 dev_capab, u8 group_capab, const u8 *group_id,
2420                                size_t group_id_len)
2421 {
2422         struct wpa_supplicant *wpa_s = ctx;
2423         char devtype[WPS_DEV_TYPE_BUFSIZE];
2424         char params[300];
2425         u8 empty_dev_type[8];
2426         unsigned int generated_pin = 0;
2427         struct wpa_supplicant *group = NULL;
2428         int res;
2429
2430         if (group_id) {
2431                 for (group = wpa_s->global->ifaces; group; group = group->next)
2432                 {
2433                         struct wpa_ssid *s = group->current_ssid;
2434                         if (s != NULL &&
2435                             s->mode == WPAS_MODE_P2P_GO &&
2436                             group_id_len - ETH_ALEN == s->ssid_len &&
2437                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2438                                       s->ssid_len) == 0)
2439                                 break;
2440                 }
2441         }
2442
2443         if (pri_dev_type == NULL) {
2444                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2445                 pri_dev_type = empty_dev_type;
2446         }
2447         res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2448                           " pri_dev_type=%s name='%s' config_methods=0x%x "
2449                           "dev_capab=0x%x group_capab=0x%x%s%s",
2450                           MAC2STR(dev_addr),
2451                           wps_dev_type_bin2str(pri_dev_type, devtype,
2452                                                sizeof(devtype)),
2453                           dev_name, supp_config_methods, dev_capab, group_capab,
2454                           group ? " group=" : "",
2455                           group ? group->ifname : "");
2456         if (os_snprintf_error(sizeof(params), res))
2457                 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated");
2458         params[sizeof(params) - 1] = '\0';
2459
2460         if (config_methods & WPS_CONFIG_DISPLAY) {
2461                 generated_pin = wps_generate_pin();
2462                 wpas_prov_disc_local_display(wpa_s, peer, params,
2463                                              generated_pin);
2464         } else if (config_methods & WPS_CONFIG_KEYPAD)
2465                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2466         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2467                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2468                                MACSTR "%s", MAC2STR(peer), params);
2469
2470         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2471                                             P2P_PROV_DISC_SUCCESS,
2472                                             config_methods, generated_pin);
2473 }
2474
2475
2476 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2477 {
2478         struct wpa_supplicant *wpa_s = ctx;
2479         unsigned int generated_pin = 0;
2480         char params[20];
2481
2482         if (wpa_s->pending_pd_before_join &&
2483             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2484              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2485                 wpa_s->pending_pd_before_join = 0;
2486                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2487                            "join-existing-group operation");
2488                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2489                 return;
2490         }
2491
2492         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2493             wpa_s->pending_pd_use == AUTO_PD_GO_NEG) {
2494                 int res;
2495
2496                 res = os_snprintf(params, sizeof(params), " peer_go=%d",
2497                                   wpa_s->pending_pd_use == AUTO_PD_JOIN);
2498                 if (os_snprintf_error(sizeof(params), res))
2499                         params[sizeof(params) - 1] = '\0';
2500         } else
2501                 params[0] = '\0';
2502
2503         if (config_methods & WPS_CONFIG_DISPLAY)
2504                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2505         else if (config_methods & WPS_CONFIG_KEYPAD) {
2506                 generated_pin = wps_generate_pin();
2507                 wpas_prov_disc_local_display(wpa_s, peer, params,
2508                                              generated_pin);
2509         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2510                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2511                                MACSTR "%s", MAC2STR(peer), params);
2512
2513         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2514                                             P2P_PROV_DISC_SUCCESS,
2515                                             config_methods, generated_pin);
2516 }
2517
2518
2519 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2520                                 enum p2p_prov_disc_status status,
2521                                 u32 adv_id, const u8 *adv_mac,
2522                                 const char *deferred_session_resp)
2523 {
2524         struct wpa_supplicant *wpa_s = ctx;
2525
2526         if (wpa_s->p2p_fallback_to_go_neg) {
2527                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2528                         "failed - fall back to GO Negotiation");
2529                 wpa_msg_global(wpa_s->parent, MSG_INFO,
2530                                P2P_EVENT_FALLBACK_TO_GO_NEG
2531                                "reason=PD-failed");
2532                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2533                 return;
2534         }
2535
2536         if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2537                 wpa_s->pending_pd_before_join = 0;
2538                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2539                            "join-existing-group operation (no ACK for PD "
2540                            "Req attempts)");
2541                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2542                 return;
2543         }
2544
2545         if (adv_id && adv_mac && deferred_session_resp) {
2546                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2547                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x"
2548                                " deferred_session_resp='%s'",
2549                                MAC2STR(peer), status, adv_id,
2550                                deferred_session_resp);
2551         } else if (adv_id && adv_mac) {
2552                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2553                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x",
2554                                MAC2STR(peer), status, adv_id);
2555         } else {
2556                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2557                                " p2p_dev_addr=" MACSTR " status=%d",
2558                                MAC2STR(peer), status);
2559         }
2560
2561         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2562                                             status, 0, 0);
2563 }
2564
2565
2566 static int freq_included(const struct p2p_channels *channels, unsigned int freq)
2567 {
2568         if (channels == NULL)
2569                 return 1; /* Assume no restrictions */
2570         return p2p_channels_includes_freq(channels, freq);
2571
2572 }
2573
2574
2575 /**
2576  * Pick the best frequency to use from all the currently used frequencies.
2577  */
2578 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s,
2579                                         struct wpa_used_freq_data *freqs,
2580                                         unsigned int num)
2581 {
2582         unsigned int i, c;
2583
2584         /* find a candidate freq that is supported by P2P */
2585         for (c = 0; c < num; c++)
2586                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq))
2587                         break;
2588
2589         if (c == num)
2590                 return 0;
2591
2592         /* once we have a candidate, try to find a 'better' one */
2593         for (i = c + 1; i < num; i++) {
2594                 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
2595                         continue;
2596
2597                 /*
2598                  * 1. Infrastructure station interfaces have higher preference.
2599                  * 2. P2P Clients have higher preference.
2600                  * 3. All others.
2601                  */
2602                 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) {
2603                         c = i;
2604                         break;
2605                 }
2606
2607                 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT))
2608                         c = i;
2609         }
2610         return freqs[c].freq;
2611 }
2612
2613
2614 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2615                                   const u8 *go_dev_addr, const u8 *ssid,
2616                                   size_t ssid_len, int *go, u8 *group_bssid,
2617                                   int *force_freq, int persistent_group,
2618                                   const struct p2p_channels *channels,
2619                                   int dev_pw_id)
2620 {
2621         struct wpa_supplicant *wpa_s = ctx;
2622         struct wpa_ssid *s;
2623         struct wpa_used_freq_data *freqs;
2624         struct wpa_supplicant *grp;
2625         int best_freq;
2626
2627         if (!persistent_group) {
2628                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2629                            " to join an active group (SSID: %s)",
2630                            MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2631                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2632                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2633                      == 0 ||
2634                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2635                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2636                                    "authorized invitation");
2637                         goto accept_inv;
2638                 }
2639
2640 #ifdef CONFIG_WPS_NFC
2641                 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled &&
2642                     dev_pw_id == wpa_s->p2p_oob_dev_pw_id) {
2643                         wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
2644                         wpa_s->p2p_wps_method = WPS_NFC;
2645                         wpa_s->pending_join_wps_method = WPS_NFC;
2646                         os_memcpy(wpa_s->pending_join_dev_addr,
2647                                   go_dev_addr, ETH_ALEN);
2648                         os_memcpy(wpa_s->pending_join_iface_addr,
2649                                   bssid, ETH_ALEN);
2650                         goto accept_inv;
2651                 }
2652 #endif /* CONFIG_WPS_NFC */
2653
2654                 /*
2655                  * Do not accept the invitation automatically; notify user and
2656                  * request approval.
2657                  */
2658                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2659         }
2660
2661         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2662         if (grp) {
2663                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2664                            "running persistent group");
2665                 if (*go)
2666                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2667                 goto accept_inv;
2668         }
2669
2670         if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2671             os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2672                 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2673                            "invitation to re-invoke a persistent group");
2674                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
2675         } else if (!wpa_s->conf->persistent_reconnect)
2676                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2677
2678         for (s = wpa_s->conf->ssid; s; s = s->next) {
2679                 if (s->disabled == 2 &&
2680                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2681                     s->ssid_len == ssid_len &&
2682                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2683                         break;
2684         }
2685
2686         if (!s) {
2687                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2688                            " requested reinvocation of an unknown group",
2689                            MAC2STR(sa));
2690                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2691         }
2692
2693         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2694                 *go = 1;
2695                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2696                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2697                                    "interface is already in use - reject "
2698                                    "invitation");
2699                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2700                 }
2701                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2702         } else if (s->mode == WPAS_MODE_P2P_GO) {
2703                 *go = 1;
2704                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2705                 {
2706                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2707                                    "interface address for the group");
2708                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2709                 }
2710                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2711                           ETH_ALEN);
2712         }
2713
2714 accept_inv:
2715         wpas_p2p_set_own_freq_preference(wpa_s, 0);
2716
2717         best_freq = 0;
2718         freqs = os_calloc(wpa_s->num_multichan_concurrent,
2719                           sizeof(struct wpa_used_freq_data));
2720         if (freqs) {
2721                 int num_channels = wpa_s->num_multichan_concurrent;
2722                 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels);
2723                 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
2724                 os_free(freqs);
2725         }
2726
2727         /* Get one of the frequencies currently in use */
2728         if (best_freq > 0) {
2729                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
2730                 wpas_p2p_set_own_freq_preference(wpa_s, best_freq);
2731
2732                 if (wpa_s->num_multichan_concurrent < 2 ||
2733                     wpas_p2p_num_unused_channels(wpa_s) < 1) {
2734                         wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
2735                         *force_freq = best_freq;
2736                 }
2737         }
2738
2739         if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
2740             wpas_p2p_num_unused_channels(wpa_s) > 0) {
2741                 if (*go == 0) {
2742                         /* We are the client */
2743                         wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
2744                                    "running a GO but we are capable of MCC, "
2745                                    "figure out the best channel to use");
2746                         *force_freq = 0;
2747                 } else if (!freq_included(channels, *force_freq)) {
2748                         /* We are the GO, and *force_freq is not in the
2749                          * intersection */
2750                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
2751                                    "in intersection but we are capable of MCC, "
2752                                    "figure out the best channel to use",
2753                                    *force_freq);
2754                         *force_freq = 0;
2755                 }
2756         }
2757
2758         return P2P_SC_SUCCESS;
2759 }
2760
2761
2762 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
2763                                      const u8 *ssid, size_t ssid_len,
2764                                      const u8 *go_dev_addr, u8 status,
2765                                      int op_freq)
2766 {
2767         struct wpa_supplicant *wpa_s = ctx;
2768         struct wpa_ssid *s;
2769
2770         for (s = wpa_s->conf->ssid; s; s = s->next) {
2771                 if (s->disabled == 2 &&
2772                     s->ssid_len == ssid_len &&
2773                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2774                         break;
2775         }
2776
2777         if (status == P2P_SC_SUCCESS) {
2778                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2779                            " was accepted; op_freq=%d MHz, SSID=%s",
2780                            MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
2781                 if (s) {
2782                         int go = s->mode == WPAS_MODE_P2P_GO;
2783                         wpas_p2p_group_add_persistent(
2784                                 wpa_s, s, go, 0, op_freq, 0, 0, NULL,
2785                                 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0);
2786                 } else if (bssid) {
2787                         wpa_s->user_initiated_pd = 0;
2788                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
2789                                       wpa_s->p2p_wps_method, 0, op_freq,
2790                                       ssid, ssid_len);
2791                 }
2792                 return;
2793         }
2794
2795         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
2796                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2797                            " was rejected (status %u)", MAC2STR(sa), status);
2798                 return;
2799         }
2800
2801         if (!s) {
2802                 if (bssid) {
2803                         wpa_msg_global(wpa_s, MSG_INFO,
2804                                        P2P_EVENT_INVITATION_RECEIVED
2805                                        "sa=" MACSTR " go_dev_addr=" MACSTR
2806                                        " bssid=" MACSTR " unknown-network",
2807                                        MAC2STR(sa), MAC2STR(go_dev_addr),
2808                                        MAC2STR(bssid));
2809                 } else {
2810                         wpa_msg_global(wpa_s, MSG_INFO,
2811                                        P2P_EVENT_INVITATION_RECEIVED
2812                                        "sa=" MACSTR " go_dev_addr=" MACSTR
2813                                        " unknown-network",
2814                                        MAC2STR(sa), MAC2STR(go_dev_addr));
2815                 }
2816                 return;
2817         }
2818
2819         if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
2820                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2821                                "sa=" MACSTR " persistent=%d freq=%d",
2822                                MAC2STR(sa), s->id, op_freq);
2823         } else {
2824                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2825                                "sa=" MACSTR " persistent=%d",
2826                                MAC2STR(sa), s->id);
2827         }
2828 }
2829
2830
2831 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
2832                                         struct wpa_ssid *ssid,
2833                                         const u8 *peer, int inv)
2834 {
2835         size_t i;
2836         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
2837
2838         if (ssid == NULL)
2839                 return;
2840
2841         for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
2842                 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer,
2843                               ETH_ALEN) == 0)
2844                         break;
2845         }
2846         if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) {
2847                 if (ssid->mode != WPAS_MODE_P2P_GO &&
2848                     os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
2849                         wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
2850                                    "due to invitation result", ssid->id);
2851                         wpas_notify_network_removed(wpa_s, ssid);
2852                         wpa_config_remove_network(wpa_s->conf, ssid->id);
2853                         return;
2854                 }
2855                 return; /* Peer not found in client list */
2856         }
2857
2858         wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
2859                    "group %d client list%s",
2860                    MAC2STR(peer), ssid->id,
2861                    inv ? " due to invitation result" : "");
2862         os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN,
2863                    ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
2864                    (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
2865         ssid->num_p2p_clients--;
2866         if (p2p_wpa_s->conf->update_config &&
2867             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
2868                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
2869 }
2870
2871
2872 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
2873                                           const u8 *peer)
2874 {
2875         struct wpa_ssid *ssid;
2876
2877         wpa_s = wpa_s->global->p2p_invite_group;
2878         if (wpa_s == NULL)
2879                 return; /* No known invitation group */
2880         ssid = wpa_s->current_ssid;
2881         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
2882             !ssid->p2p_persistent_group)
2883                 return; /* Not operating as a GO in persistent group */
2884         ssid = wpas_p2p_get_persistent(wpa_s->parent, peer,
2885                                        ssid->ssid, ssid->ssid_len);
2886         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
2887 }
2888
2889
2890 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
2891                                    const struct p2p_channels *channels,
2892                                    const u8 *peer, int neg_freq,
2893                                    int peer_oper_freq)
2894 {
2895         struct wpa_supplicant *wpa_s = ctx;
2896         struct wpa_ssid *ssid;
2897         int freq;
2898
2899         if (bssid) {
2900                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2901                                "status=%d " MACSTR,
2902                                status, MAC2STR(bssid));
2903         } else {
2904                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2905                                "status=%d ", status);
2906         }
2907         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
2908
2909         wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
2910                    status, MAC2STR(peer));
2911         if (wpa_s->pending_invite_ssid_id == -1) {
2912                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
2913                         wpas_remove_persistent_client(wpa_s, peer);
2914                 return; /* Invitation to active group */
2915         }
2916
2917         if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
2918                 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
2919                            "invitation exchange to indicate readiness for "
2920                            "re-invocation");
2921         }
2922
2923         if (status != P2P_SC_SUCCESS) {
2924                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
2925                         ssid = wpa_config_get_network(
2926                                 wpa_s->conf, wpa_s->pending_invite_ssid_id);
2927                         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
2928                 }
2929                 wpas_p2p_remove_pending_group_interface(wpa_s);
2930                 return;
2931         }
2932
2933         ssid = wpa_config_get_network(wpa_s->conf,
2934                                       wpa_s->pending_invite_ssid_id);
2935         if (ssid == NULL) {
2936                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
2937                            "data matching with invitation");
2938                 return;
2939         }
2940
2941         /*
2942          * The peer could have missed our ctrl::ack frame for Invitation
2943          * Response and continue retransmitting the frame. To reduce the
2944          * likelihood of the peer not getting successful TX status for the
2945          * Invitation Response frame, wait a short time here before starting
2946          * the persistent group so that we will remain on the current channel to
2947          * acknowledge any possible retransmission from the peer.
2948          */
2949         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
2950                 "starting persistent group");
2951         os_sleep(0, 50000);
2952
2953         if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
2954             freq_included(channels, neg_freq))
2955                 freq = neg_freq;
2956         else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
2957                  freq_included(channels, peer_oper_freq))
2958                 freq = peer_oper_freq;
2959         else
2960                 freq = 0;
2961
2962         wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
2963                    freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
2964         wpas_p2p_group_add_persistent(wpa_s, ssid,
2965                                       ssid->mode == WPAS_MODE_P2P_GO,
2966                                       wpa_s->p2p_persistent_go_freq,
2967                                       freq,
2968                                       wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
2969                                       channels,
2970                                       ssid->mode == WPAS_MODE_P2P_GO ?
2971                                       P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
2972                                       0);
2973 }
2974
2975
2976 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
2977                                     unsigned int freq)
2978 {
2979         if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
2980                 return 1;
2981         return freq_range_list_includes(&global->p2p_disallow_freq, freq);
2982 }
2983
2984
2985 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
2986 {
2987         reg->channel[reg->channels] = chan;
2988         reg->channels++;
2989 }
2990
2991
2992 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
2993                                      struct p2p_channels *chan,
2994                                      struct p2p_channels *cli_chan)
2995 {
2996         int i, cla = 0;
2997
2998         wpa_s->global->p2p_24ghz_social_channels = 1;
2999
3000         os_memset(cli_chan, 0, sizeof(*cli_chan));
3001
3002         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3003                    "band");
3004
3005         /* Operating class 81 - 2.4 GHz band channels 1..13 */
3006         chan->reg_class[cla].reg_class = 81;
3007         chan->reg_class[cla].channels = 0;
3008         for (i = 0; i < 11; i++) {
3009                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3010                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3011         }
3012         if (chan->reg_class[cla].channels)
3013                 cla++;
3014
3015         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3016                    "band");
3017
3018         /* Operating class 115 - 5 GHz, channels 36-48 */
3019         chan->reg_class[cla].reg_class = 115;
3020         chan->reg_class[cla].channels = 0;
3021         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3022                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3023         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3024                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3025         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3026                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3027         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3028                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3029         if (chan->reg_class[cla].channels)
3030                 cla++;
3031
3032         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3033                    "band");
3034
3035         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3036         chan->reg_class[cla].reg_class = 124;
3037         chan->reg_class[cla].channels = 0;
3038         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3039                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3040         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3041                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3042         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3043                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3044         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3045                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3046         if (chan->reg_class[cla].channels)
3047                 cla++;
3048
3049         chan->reg_classes = cla;
3050         return 0;
3051 }
3052
3053
3054 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
3055                                           u16 num_modes,
3056                                           enum hostapd_hw_mode mode)
3057 {
3058         u16 i;
3059
3060         for (i = 0; i < num_modes; i++) {
3061                 if (modes[i].mode == mode)
3062                         return &modes[i];
3063         }
3064
3065         return NULL;
3066 }
3067
3068
3069 enum chan_allowed {
3070         NOT_ALLOWED, NO_IR, ALLOWED
3071 };
3072
3073 static int has_channel(struct wpa_global *global,
3074                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
3075 {
3076         int i;
3077         unsigned int freq;
3078
3079         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3080                 chan * 5;
3081         if (wpas_p2p_disallowed_freq(global, freq))
3082                 return NOT_ALLOWED;
3083
3084         for (i = 0; i < mode->num_channels; i++) {
3085                 if (mode->channels[i].chan == chan) {
3086                         if (flags)
3087                                 *flags = mode->channels[i].flag;
3088                         if (mode->channels[i].flag &
3089                             (HOSTAPD_CHAN_DISABLED |
3090                              HOSTAPD_CHAN_RADAR))
3091                                 return NOT_ALLOWED;
3092                         if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR)
3093                                 return NO_IR;
3094                         return ALLOWED;
3095                 }
3096         }
3097
3098         return NOT_ALLOWED;
3099 }
3100
3101
3102 struct p2p_oper_class_map {
3103         enum hostapd_hw_mode mode;
3104         u8 op_class;
3105         u8 min_chan;
3106         u8 max_chan;
3107         u8 inc;
3108         enum { BW20, BW40PLUS, BW40MINUS, BW80, BW2160 } bw;
3109 };
3110
3111 static const struct p2p_oper_class_map op_class[] = {
3112         { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
3113 #if 0 /* Do not enable HT40 on 2 GHz for now */
3114         { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
3115         { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
3116 #endif
3117         { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
3118         { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
3119         { HOSTAPD_MODE_IEEE80211A, 125, 149, 169, 4, BW20 },
3120         { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
3121         { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
3122         { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
3123         { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
3124
3125         /*
3126          * IEEE P802.11ac/D7.0 Table E-4 actually talks about channel center
3127          * frequency index 42, 58, 106, 122, 138, 155 with channel spacing of
3128          * 80 MHz, but currently use the following definition for simplicity
3129          * (these center frequencies are not actual channels, which makes
3130          * has_channel() fail). wpas_p2p_verify_80mhz() should take care of
3131          * removing invalid channels.
3132          */
3133         { HOSTAPD_MODE_IEEE80211A, 128, 36, 161, 4, BW80 },
3134         { HOSTAPD_MODE_IEEE80211AD, 180, 1, 4, 1, BW2160 },
3135         { -1, 0, 0, 0, 0, BW20 }
3136 };
3137
3138
3139 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3140                                      struct hostapd_hw_modes *mode,
3141                                      u8 channel)
3142 {
3143         u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3144         unsigned int i;
3145
3146         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3147                 return 0;
3148
3149         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3150                 /*
3151                  * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3152                  * so the center channel is 6 channels away from the start/end.
3153                  */
3154                 if (channel >= center_channels[i] - 6 &&
3155                     channel <= center_channels[i] + 6)
3156                         return center_channels[i];
3157
3158         return 0;
3159 }
3160
3161
3162 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3163                                                struct hostapd_hw_modes *mode,
3164                                                u8 channel, u8 bw)
3165 {
3166         u8 center_chan;
3167         int i, flags;
3168         enum chan_allowed res, ret = ALLOWED;
3169
3170         center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3171         if (!center_chan)
3172                 return NOT_ALLOWED;
3173         if (center_chan >= 58 && center_chan <= 138)
3174                 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3175
3176         /* check all the channels are available */
3177         for (i = 0; i < 4; i++) {
3178                 int adj_chan = center_chan - 6 + i * 4;
3179
3180                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3181                 if (res == NOT_ALLOWED)
3182                         return NOT_ALLOWED;
3183                 if (res == NO_IR)
3184                         ret = NO_IR;
3185
3186                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3187                         return NOT_ALLOWED;
3188                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3189                         return NOT_ALLOWED;
3190                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3191                         return NOT_ALLOWED;
3192                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3193                         return NOT_ALLOWED;
3194         }
3195
3196         return ret;
3197 }
3198
3199
3200 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3201                                                  struct hostapd_hw_modes *mode,
3202                                                  u8 channel, u8 bw)
3203 {
3204         int flag = 0;
3205         enum chan_allowed res, res2;
3206
3207         res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3208         if (bw == BW40MINUS) {
3209                 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3210                         return NOT_ALLOWED;
3211                 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3212         } else if (bw == BW40PLUS) {
3213                 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3214                         return NOT_ALLOWED;
3215                 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3216         } else if (bw == BW80) {
3217                 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3218         }
3219
3220         if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3221                 return NOT_ALLOWED;
3222         if (res == NO_IR || res2 == NO_IR)
3223                 return NO_IR;
3224         return res;
3225 }
3226
3227
3228 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3229                                    struct p2p_channels *chan,
3230                                    struct p2p_channels *cli_chan)
3231 {
3232         struct hostapd_hw_modes *mode;
3233         int cla, op, cli_cla;
3234
3235         if (wpa_s->hw.modes == NULL) {
3236                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3237                            "of all supported channels; assume dualband "
3238                            "support");
3239                 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3240         }
3241
3242         cla = cli_cla = 0;
3243
3244         for (op = 0; op_class[op].op_class; op++) {
3245                 const struct p2p_oper_class_map *o = &op_class[op];
3246                 u8 ch;
3247                 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3248
3249                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3250                 if (mode == NULL)
3251                         continue;
3252                 if (mode->mode == HOSTAPD_MODE_IEEE80211G)
3253                         wpa_s->global->p2p_24ghz_social_channels = 1;
3254                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3255                         enum chan_allowed res;
3256                         res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3257                         if (res == ALLOWED) {
3258                                 if (reg == NULL) {
3259                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3260                                                    o->op_class);
3261                                         reg = &chan->reg_class[cla];
3262                                         cla++;
3263                                         reg->reg_class = o->op_class;
3264                                 }
3265                                 reg->channel[reg->channels] = ch;
3266                                 reg->channels++;
3267                         } else if (res == NO_IR &&
3268                                    wpa_s->conf->p2p_add_cli_chan) {
3269                                 if (cli_reg == NULL) {
3270                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3271                                                    o->op_class);
3272                                         cli_reg = &cli_chan->reg_class[cli_cla];
3273                                         cli_cla++;
3274                                         cli_reg->reg_class = o->op_class;
3275                                 }
3276                                 cli_reg->channel[cli_reg->channels] = ch;
3277                                 cli_reg->channels++;
3278                         }
3279                 }
3280                 if (reg) {
3281                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3282                                     reg->channel, reg->channels);
3283                 }
3284                 if (cli_reg) {
3285                         wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3286                                     cli_reg->channel, cli_reg->channels);
3287                 }
3288         }
3289
3290         chan->reg_classes = cla;
3291         cli_chan->reg_classes = cli_cla;
3292
3293         return 0;
3294 }
3295
3296
3297 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3298                            struct hostapd_hw_modes *mode, u8 channel)
3299 {
3300         int op;
3301         enum chan_allowed ret;
3302
3303         for (op = 0; op_class[op].op_class; op++) {
3304                 const struct p2p_oper_class_map *o = &op_class[op];
3305                 u8 ch;
3306
3307                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3308                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3309                             o->bw == BW20 || ch != channel)
3310                                 continue;
3311                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3312                         if (ret == ALLOWED)
3313                                 return (o->bw == BW40MINUS) ? -1 : 1;
3314                 }
3315         }
3316         return 0;
3317 }
3318
3319
3320 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3321                               struct hostapd_hw_modes *mode, u8 channel)
3322 {
3323         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3324                 return 0;
3325
3326         return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3327 }
3328
3329
3330 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3331                         size_t buf_len)
3332 {
3333         struct wpa_supplicant *wpa_s = ctx;
3334
3335         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3336                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3337                         break;
3338         }
3339         if (wpa_s == NULL)
3340                 return -1;
3341
3342         return wpa_drv_get_noa(wpa_s, buf, buf_len);
3343 }
3344
3345
3346 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s,
3347                                               const u8 *ssid, size_t ssid_len)
3348 {
3349         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3350                 struct wpa_ssid *s = wpa_s->current_ssid;
3351                 if (s == NULL)
3352                         continue;
3353                 if (s->mode != WPAS_MODE_P2P_GO &&
3354                     s->mode != WPAS_MODE_AP &&
3355                     s->mode != WPAS_MODE_P2P_GROUP_FORMATION)
3356                         continue;
3357                 if (s->ssid_len != ssid_len ||
3358                     os_memcmp(ssid, s->ssid, ssid_len) != 0)
3359                         continue;
3360                 return wpa_s;
3361         }
3362
3363         return NULL;
3364
3365 }
3366
3367
3368 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s,
3369                                                   const u8 *peer_dev_addr)
3370 {
3371         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3372                 struct wpa_ssid *ssid = wpa_s->current_ssid;
3373                 if (ssid == NULL)
3374                         continue;
3375                 if (ssid->mode != WPAS_MODE_INFRA)
3376                         continue;
3377                 if (wpa_s->wpa_state != WPA_COMPLETED &&
3378                     wpa_s->wpa_state != WPA_GROUP_HANDSHAKE)
3379                         continue;
3380                 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0)
3381                         return wpa_s;
3382         }
3383
3384         return NULL;
3385 }
3386
3387
3388 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3389 {
3390         struct wpa_supplicant *wpa_s = ctx;
3391
3392         return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL;
3393 }
3394
3395
3396 static int wpas_is_concurrent_session_active(void *ctx)
3397 {
3398         struct wpa_supplicant *wpa_s = ctx;
3399         struct wpa_supplicant *ifs;
3400
3401         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3402                 if (ifs == wpa_s)
3403                         continue;
3404                 if (ifs->wpa_state > WPA_ASSOCIATED)
3405                         return 1;
3406         }
3407         return 0;
3408 }
3409
3410
3411 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3412 {
3413         struct wpa_supplicant *wpa_s = ctx;
3414         wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3415 }
3416
3417
3418 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s,
3419                                   const char *conf_p2p_dev)
3420 {
3421         struct wpa_interface iface;
3422         struct wpa_supplicant *p2pdev_wpa_s;
3423         char ifname[100];
3424         char force_name[100];
3425         int ret;
3426
3427         ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3428                           wpa_s->ifname);
3429         if (os_snprintf_error(sizeof(ifname), ret))
3430                 return -1;
3431         force_name[0] = '\0';
3432         wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3433         ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3434                              force_name, wpa_s->pending_interface_addr, NULL);
3435         if (ret < 0) {
3436                 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3437                 return ret;
3438         }
3439         os_strlcpy(wpa_s->pending_interface_name, ifname,
3440                    sizeof(wpa_s->pending_interface_name));
3441
3442         os_memset(&iface, 0, sizeof(iface));
3443         iface.p2p_mgmt = 1;
3444         iface.ifname = wpa_s->pending_interface_name;
3445         iface.driver = wpa_s->driver->name;
3446         iface.driver_param = wpa_s->conf->driver_param;
3447
3448         /*
3449          * If a P2P Device configuration file was given, use it as the interface
3450          * configuration file (instead of using parent's configuration file.
3451          */
3452         if (conf_p2p_dev) {
3453                 iface.confname = conf_p2p_dev;
3454                 iface.ctrl_interface = NULL;
3455         } else {
3456                 iface.confname = wpa_s->confname;
3457                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3458         }
3459         iface.conf_p2p_dev = NULL;
3460
3461         p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
3462         if (!p2pdev_wpa_s) {
3463                 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3464                 return -1;
3465         }
3466
3467         wpa_s->pending_interface_name[0] = '\0';
3468         return 0;
3469 }
3470
3471
3472 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3473                                const u8 *noa, size_t noa_len)
3474 {
3475         struct wpa_supplicant *wpa_s, *intf = ctx;
3476         char hex[100];
3477
3478         for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3479                 if (wpa_s->waiting_presence_resp)
3480                         break;
3481         }
3482         if (!wpa_s) {
3483                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3484                 return;
3485         }
3486         wpa_s->waiting_presence_resp = 0;
3487
3488         wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3489         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3490                 " status=%u noa=%s", MAC2STR(src), status, hex);
3491 }
3492
3493
3494 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid,
3495                                      size_t ssid_len, u8 *go_dev_addr,
3496                                      u8 *ret_ssid, size_t *ret_ssid_len)
3497 {
3498         struct wpa_supplicant *wpa_s = ctx;
3499         struct wpa_ssid *s;
3500
3501         s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len);
3502         if (s) {
3503                 os_memcpy(ret_ssid, s->ssid, s->ssid_len);
3504                 *ret_ssid_len = s->ssid_len;
3505                 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN);
3506                 return 1;
3507         }
3508
3509         return 0;
3510 }
3511
3512
3513 static int wpas_get_go_info(void *ctx, u8 *intended_addr,
3514                             u8 *ssid, size_t *ssid_len, int *group_iface)
3515 {
3516         struct wpa_supplicant *wpa_s = ctx;
3517         struct wpa_ssid *s;
3518         u8 bssid[ETH_ALEN];
3519
3520         s = wpas_p2p_group_go_ssid(wpa_s, bssid);
3521         if (!s) {
3522                 s = wpas_p2p_get_persistent_go(wpa_s);
3523                 if (s)
3524                         os_memcpy(bssid, s->bssid, ETH_ALEN);
3525         }
3526
3527         *group_iface = wpas_p2p_create_iface(wpa_s);
3528         if (!s)
3529                 return 0;
3530
3531         os_memcpy(intended_addr, bssid, ETH_ALEN);
3532         os_memcpy(ssid, s->ssid, s->ssid_len);
3533         *ssid_len = s->ssid_len;
3534
3535         return 1;
3536 }
3537
3538
3539 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go,
3540                                     const u8 *ssid, size_t ssid_len)
3541 {
3542         struct wpa_supplicant *wpa_s = ctx;
3543         struct wpa_ssid *s;
3544         int save_config = 0;
3545         size_t i;
3546
3547         /* Start with our first choice of Persistent Groups */
3548         while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) {
3549                 if (go && ssid && ssid_len &&
3550                     s->ssid_len == ssid_len &&
3551                     os_memcmp(go, s->bssid, ETH_ALEN) == 0 &&
3552                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3553                         break;
3554
3555                 /* Remove stale persistent group */
3556                 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) {
3557                         wpa_config_remove_network(wpa_s->conf, s->id);
3558                         save_config = 1;
3559                         continue;
3560                 }
3561
3562                 for (i = 0; i < s->num_p2p_clients; i++) {
3563                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
3564                                       peer, ETH_ALEN) != 0)
3565                                 continue;
3566
3567                         os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
3568                                    s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3569                                    (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3570                         break;
3571                 }
3572                 s->num_p2p_clients--;
3573                 save_config = 1;
3574         }
3575
3576         if (save_config)
3577                 p2p_config_write(wpa_s);
3578
3579         /* Return TRUE if valid SSID remains */
3580         return s != NULL;
3581 }
3582
3583
3584 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev,
3585                                     const u8 *adv_mac, const u8 *ses_mac,
3586                                     const u8 *grp_mac, u32 adv_id, u32 ses_id,
3587                                     u8 conncap, int passwd_id,
3588                                     const u8 *persist_ssid,
3589                                     size_t persist_ssid_size, int response_done,
3590                                     int prov_start, const char *session_info)
3591 {
3592         struct wpa_supplicant *wpa_s = ctx;
3593         u8 mac[ETH_ALEN];
3594         struct wpa_ssid *persistent_go, *stale, *s;
3595         int save_config = 0;
3596         struct wpa_supplicant *go_wpa_s;
3597
3598         if (!dev)
3599                 return;
3600
3601         os_memset(mac, 0, ETH_ALEN);
3602         if (!adv_mac)
3603                 adv_mac = mac;
3604         if (!ses_mac)
3605                 ses_mac = mac;
3606         if (!grp_mac)
3607                 grp_mac = mac;
3608
3609         if (prov_start) {
3610                 if (session_info == NULL) {
3611                         wpa_msg_global(wpa_s, MSG_INFO,
3612                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3613                                        " adv_id=%x conncap=%x"
3614                                        " adv_mac=" MACSTR
3615                                        " session=%x mac=" MACSTR
3616                                        " dev_passwd_id=%d",
3617                                        MAC2STR(dev), adv_id, conncap,
3618                                        MAC2STR(adv_mac),
3619                                        ses_id, MAC2STR(ses_mac),
3620                                        passwd_id);
3621                 } else {
3622                         wpa_msg_global(wpa_s, MSG_INFO,
3623                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3624                                        " adv_id=%x conncap=%x"
3625                                        " adv_mac=" MACSTR
3626                                        " session=%x mac=" MACSTR
3627                                        " dev_passwd_id=%d info='%s'",
3628                                        MAC2STR(dev), adv_id, conncap,
3629                                        MAC2STR(adv_mac),
3630                                        ses_id, MAC2STR(ses_mac),
3631                                        passwd_id, session_info);
3632                 }
3633                 return;
3634         }
3635
3636         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
3637         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
3638
3639         if (status && status != P2P_SC_SUCCESS_DEFERRED) {
3640                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
3641                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
3642
3643                 if (persistent_go && !persistent_go->num_p2p_clients) {
3644                         /* remove empty persistent GO */
3645                         wpa_config_remove_network(wpa_s->conf,
3646                                                   persistent_go->id);
3647                 }
3648
3649                 wpa_msg_global(wpa_s, MSG_INFO,
3650                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3651                                " status=%d"
3652                                " adv_id=%x adv_mac=" MACSTR
3653                                " session=%x mac=" MACSTR,
3654                                MAC2STR(dev), status,
3655                                adv_id, MAC2STR(adv_mac),
3656                                ses_id, MAC2STR(ses_mac));
3657                 return;
3658         }
3659
3660         /* Clean up stale persistent groups with this device */
3661         s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid,
3662                                     persist_ssid_size);
3663         for (;;) {
3664                 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0);
3665                 if (!stale)
3666                         break;
3667
3668                 if (s && s->ssid_len == stale->ssid_len &&
3669                     os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 &&
3670                     os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0)
3671                         break;
3672
3673                 /* Remove stale persistent group */
3674                 if (stale->mode != WPAS_MODE_P2P_GO ||
3675                     stale->num_p2p_clients <= 1) {
3676                         wpa_config_remove_network(wpa_s->conf, stale->id);
3677                 } else {
3678                         size_t i;
3679
3680                         for (i = 0; i < stale->num_p2p_clients; i++) {
3681                                 if (os_memcmp(stale->p2p_client_list +
3682                                               i * ETH_ALEN,
3683                                               dev, ETH_ALEN) == 0) {
3684                                         os_memmove(stale->p2p_client_list +
3685                                                    i * ETH_ALEN,
3686                                                    stale->p2p_client_list +
3687                                                    (i + 1) * ETH_ALEN,
3688                                                    (stale->num_p2p_clients -
3689                                                     i - 1) * ETH_ALEN);
3690                                         break;
3691                                 }
3692                         }
3693                         stale->num_p2p_clients--;
3694                 }
3695                 save_config = 1;
3696         }
3697
3698         if (save_config)
3699                 p2p_config_write(wpa_s);
3700
3701         if (s) {
3702                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
3703                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
3704
3705                 if (persistent_go && s != persistent_go &&
3706                     !persistent_go->num_p2p_clients) {
3707                         /* remove empty persistent GO */
3708                         wpa_config_remove_network(wpa_s->conf,
3709                                                   persistent_go->id);
3710                         /* Save config */
3711                 }
3712
3713                 wpa_msg_global(wpa_s, MSG_INFO,
3714                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3715                                " status=%d"
3716                                " adv_id=%x adv_mac=" MACSTR
3717                                " session=%x mac=" MACSTR
3718                                " persist=%d",
3719                                MAC2STR(dev), status,
3720                                adv_id, MAC2STR(adv_mac),
3721                                ses_id, MAC2STR(ses_mac), s->id);
3722                 return;
3723         }
3724
3725         if (conncap == P2PS_SETUP_GROUP_OWNER) {
3726                 const char *go_ifname = NULL;
3727                 if (!go_wpa_s) {
3728                         wpa_s->global->pending_p2ps_group = 1;
3729
3730                         if (wpa_s->conf->p2p_no_group_iface)
3731                                 go_ifname = wpa_s->ifname;
3732                         else if (wpa_s->pending_interface_name[0])
3733                                 go_ifname = wpa_s->pending_interface_name;
3734
3735                         if (!go_ifname) {
3736                                 wpas_p2ps_prov_complete(
3737                                         wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP,
3738                                         dev, adv_mac, ses_mac,
3739                                         NULL, adv_id, ses_id, 0, 0,
3740                                         NULL, 0, 0, 0, NULL);
3741                                 return;
3742                         }
3743
3744                         /* If PD Resp complete, start up the GO */
3745                         if (response_done && persistent_go) {
3746                                 wpas_p2p_group_add_persistent(
3747                                         wpa_s, persistent_go,
3748                                         0, 0, 0, 0, 0, NULL,
3749                                         persistent_go->mode ==
3750                                         WPAS_MODE_P2P_GO ?
3751                                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3752                                         0);
3753                         } else if (response_done) {
3754                                 wpas_p2p_group_add(wpa_s, 1, 0, 0, 0);
3755                         }
3756
3757                         if (passwd_id == DEV_PW_P2PS_DEFAULT) {
3758                                 os_memcpy(wpa_s->p2ps_join_addr, dev, ETH_ALEN);
3759                                 wpa_s->p2ps_join_addr_valid = 1;
3760                                 wpa_dbg(wpa_s, MSG_DEBUG,
3761                                         "P2PS: Saving PIN for " MACSTR,
3762                                         MAC2STR(dev));
3763                         }
3764                 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) {
3765                         go_ifname = go_wpa_s->ifname;
3766
3767                         wpa_dbg(go_wpa_s, MSG_DEBUG,
3768                                 "P2P: Setting PIN-1 For " MACSTR, MAC2STR(dev));
3769                         wpa_supplicant_ap_wps_pin(go_wpa_s, dev, "12345670",
3770                                                   NULL, 0, 0);
3771
3772                         os_memcpy(wpa_s->p2ps_join_addr, dev, ETH_ALEN);
3773                         wpa_s->p2ps_join_addr_valid = 1;
3774                         wpa_dbg(wpa_s, MSG_DEBUG,
3775                                 "P2PS: Saving PIN for " MACSTR, MAC2STR(dev));
3776                 }
3777
3778                 wpa_msg_global(wpa_s, MSG_INFO,
3779                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3780                                " status=%d conncap=%x"
3781                                " adv_id=%x adv_mac=" MACSTR
3782                                " session=%x mac=" MACSTR
3783                                " dev_passwd_id=%d go=%s",
3784                                MAC2STR(dev), status, conncap,
3785                                adv_id, MAC2STR(adv_mac),
3786                                ses_id, MAC2STR(ses_mac),
3787                                passwd_id, go_ifname);
3788                 return;
3789         }
3790
3791         if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
3792                 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
3793
3794         if (persistent_go && !persistent_go->num_p2p_clients) {
3795                 /* remove empty persistent GO */
3796                 wpa_config_remove_network(wpa_s->conf, persistent_go->id);
3797         }
3798
3799         if (conncap == P2PS_SETUP_CLIENT) {
3800                 wpa_msg_global(wpa_s, MSG_INFO,
3801                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3802                                " status=%d conncap=%x"
3803                                " adv_id=%x adv_mac=" MACSTR
3804                                " session=%x mac=" MACSTR
3805                                " dev_passwd_id=%d join=" MACSTR,
3806                                MAC2STR(dev), status, conncap,
3807                                adv_id, MAC2STR(adv_mac),
3808                                ses_id, MAC2STR(ses_mac),
3809                                passwd_id, MAC2STR(grp_mac));
3810         } else {
3811                 wpa_msg_global(wpa_s, MSG_INFO,
3812                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3813                                " status=%d conncap=%x"
3814                                " adv_id=%x adv_mac=" MACSTR
3815                                " session=%x mac=" MACSTR
3816                                " dev_passwd_id=%d",
3817                                MAC2STR(dev), status, conncap,
3818                                adv_id, MAC2STR(adv_mac),
3819                                ses_id, MAC2STR(ses_mac),
3820                                passwd_id);
3821         }
3822 }
3823
3824
3825 static int _wpas_p2p_in_progress(void *ctx)
3826 {
3827         struct wpa_supplicant *wpa_s = ctx;
3828         return wpas_p2p_in_progress(wpa_s);
3829 }
3830
3831
3832 static int wpas_prov_disc_resp_cb(void *ctx)
3833 {
3834         struct wpa_supplicant *wpa_s = ctx;
3835         struct wpa_ssid *persistent_go;
3836
3837         if (!wpa_s->global->pending_p2ps_group)
3838                 return 0;
3839
3840         wpa_s->global->pending_p2ps_group = 0;
3841
3842         if (wpas_p2p_get_go_group(wpa_s))
3843                 return 0;
3844         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
3845
3846         if (persistent_go) {
3847                 wpas_p2p_group_add_persistent(
3848                         wpa_s, persistent_go, 0, 0, 0, 0, 0, NULL,
3849                         persistent_go->mode == WPAS_MODE_P2P_GO ?
3850                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0);
3851         } else {
3852                 wpas_p2p_group_add(wpa_s, 1, 0, 0, 0);
3853         }
3854
3855         return 1;
3856 }
3857
3858
3859 /**
3860  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
3861  * @global: Pointer to global data from wpa_supplicant_init()
3862  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3863  * Returns: 0 on success, -1 on failure
3864  */
3865 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
3866 {
3867         struct p2p_config p2p;
3868         int i;
3869
3870         if (wpa_s->conf->p2p_disabled)
3871                 return 0;
3872
3873         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
3874                 return 0;
3875
3876         if (global->p2p)
3877                 return 0;
3878
3879         os_memset(&p2p, 0, sizeof(p2p));
3880         p2p.cb_ctx = wpa_s;
3881         p2p.debug_print = wpas_p2p_debug_print;
3882         p2p.p2p_scan = wpas_p2p_scan;
3883         p2p.send_action = wpas_send_action;
3884         p2p.send_action_done = wpas_send_action_done;
3885         p2p.go_neg_completed = wpas_go_neg_completed;
3886         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
3887         p2p.dev_found = wpas_dev_found;
3888         p2p.dev_lost = wpas_dev_lost;
3889         p2p.find_stopped = wpas_find_stopped;
3890         p2p.start_listen = wpas_start_listen;
3891         p2p.stop_listen = wpas_stop_listen;
3892         p2p.send_probe_resp = wpas_send_probe_resp;
3893         p2p.sd_request = wpas_sd_request;
3894         p2p.sd_response = wpas_sd_response;
3895         p2p.prov_disc_req = wpas_prov_disc_req;
3896         p2p.prov_disc_resp = wpas_prov_disc_resp;
3897         p2p.prov_disc_fail = wpas_prov_disc_fail;
3898         p2p.invitation_process = wpas_invitation_process;
3899         p2p.invitation_received = wpas_invitation_received;
3900         p2p.invitation_result = wpas_invitation_result;
3901         p2p.get_noa = wpas_get_noa;
3902         p2p.go_connected = wpas_go_connected;
3903         p2p.presence_resp = wpas_presence_resp;
3904         p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
3905         p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
3906         p2p.get_persistent_group = wpas_get_persistent_group;
3907         p2p.get_go_info = wpas_get_go_info;
3908         p2p.remove_stale_groups = wpas_remove_stale_groups;
3909         p2p.p2ps_prov_complete = wpas_p2ps_prov_complete;
3910         p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb;
3911         p2p.p2ps_group_capability = p2ps_group_capability;
3912
3913         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
3914         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
3915         p2p.dev_name = wpa_s->conf->device_name;
3916         p2p.manufacturer = wpa_s->conf->manufacturer;
3917         p2p.model_name = wpa_s->conf->model_name;
3918         p2p.model_number = wpa_s->conf->model_number;
3919         p2p.serial_number = wpa_s->conf->serial_number;
3920         if (wpa_s->wps) {
3921                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
3922                 p2p.config_methods = wpa_s->wps->config_methods;
3923         }
3924
3925         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
3926                 wpa_printf(MSG_ERROR,
3927                            "P2P: Failed to configure supported channel list");
3928                 return -1;
3929         }
3930
3931         if (wpa_s->conf->p2p_listen_reg_class &&
3932             wpa_s->conf->p2p_listen_channel) {
3933                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
3934                 p2p.channel = wpa_s->conf->p2p_listen_channel;
3935                 p2p.channel_forced = 1;
3936         } else {
3937                 /*
3938                  * Pick one of the social channels randomly as the listen
3939                  * channel.
3940                  */
3941                 if (p2p_config_get_random_social(&p2p, &p2p.reg_class,
3942                                                  &p2p.channel) != 0) {
3943                         wpa_printf(MSG_INFO,
3944                                    "P2P: No social channels supported by the driver - do not enable P2P");
3945                         return 0;
3946                 }
3947                 p2p.channel_forced = 0;
3948         }
3949         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d",
3950                    p2p.reg_class, p2p.channel);
3951
3952         if (wpa_s->conf->p2p_oper_reg_class &&
3953             wpa_s->conf->p2p_oper_channel) {
3954                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
3955                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
3956                 p2p.cfg_op_channel = 1;
3957                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
3958                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
3959
3960         } else {
3961                 /*
3962                  * Use random operation channel from 2.4 GHz band social
3963                  * channels (1, 6, 11) or band 60 GHz social channel (2) if no
3964                  * other preference is indicated.
3965                  */
3966                 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class,
3967                                                  &p2p.op_channel) != 0) {
3968                         wpa_printf(MSG_ERROR,
3969                                    "P2P: Failed to select random social channel as operation channel");
3970                         return -1;
3971                 }
3972                 p2p.cfg_op_channel = 0;
3973                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
3974                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
3975         }
3976
3977         if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
3978                 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
3979                 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
3980         }
3981
3982         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
3983                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
3984                 p2p.country[2] = 0x04;
3985         } else
3986                 os_memcpy(p2p.country, "XX\x04", 3);
3987
3988         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
3989                   WPS_DEV_TYPE_LEN);
3990
3991         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
3992         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
3993                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
3994
3995         p2p.concurrent_operations = !!(wpa_s->drv_flags &
3996                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
3997
3998         p2p.max_peers = 100;
3999
4000         if (wpa_s->conf->p2p_ssid_postfix) {
4001                 p2p.ssid_postfix_len =
4002                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
4003                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
4004                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
4005                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
4006                           p2p.ssid_postfix_len);
4007         }
4008
4009         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
4010
4011         p2p.max_listen = wpa_s->max_remain_on_chan;
4012
4013         if (wpa_s->conf->p2p_passphrase_len >= 8 &&
4014             wpa_s->conf->p2p_passphrase_len <= 63)
4015                 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len;
4016         else
4017                 p2p.passphrase_len = 8;
4018
4019         global->p2p = p2p_init(&p2p);
4020         if (global->p2p == NULL)
4021                 return -1;
4022         global->p2p_init_wpa_s = wpa_s;
4023
4024         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4025                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4026                         continue;
4027                 p2p_add_wps_vendor_extension(
4028                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
4029         }
4030
4031         p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
4032
4033         return 0;
4034 }
4035
4036
4037 /**
4038  * wpas_p2p_deinit - Deinitialize per-interface P2P data
4039  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4040  *
4041  * This function deinitialize per-interface P2P data.
4042  */
4043 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
4044 {
4045         if (wpa_s->driver && wpa_s->drv_priv)
4046                 wpa_drv_probe_req_report(wpa_s, 0);
4047
4048         if (wpa_s->go_params) {
4049                 /* Clear any stored provisioning info */
4050                 p2p_clear_provisioning_info(
4051                         wpa_s->global->p2p,
4052                         wpa_s->go_params->peer_device_addr);
4053         }
4054
4055         os_free(wpa_s->go_params);
4056         wpa_s->go_params = NULL;
4057         eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
4058         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4059         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4060         wpa_s->p2p_long_listen = 0;
4061         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4062         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4063         wpas_p2p_remove_pending_group_interface(wpa_s);
4064         eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
4065         wpas_p2p_listen_work_done(wpa_s);
4066         if (wpa_s->p2p_send_action_work) {
4067                 os_free(wpa_s->p2p_send_action_work->ctx);
4068                 radio_work_done(wpa_s->p2p_send_action_work);
4069                 wpa_s->p2p_send_action_work = NULL;
4070         }
4071         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
4072
4073         wpabuf_free(wpa_s->p2p_oob_dev_pw);
4074         wpa_s->p2p_oob_dev_pw = NULL;
4075
4076         os_free(wpa_s->p2p_group_common_freqs);
4077         wpa_s->p2p_group_common_freqs = NULL;
4078         wpa_s->p2p_group_common_freqs_num = 0;
4079
4080         /* TODO: remove group interface from the driver if this wpa_s instance
4081          * is on top of a P2P group interface */
4082 }
4083
4084
4085 /**
4086  * wpas_p2p_deinit_global - Deinitialize global P2P module
4087  * @global: Pointer to global data from wpa_supplicant_init()
4088  *
4089  * This function deinitializes the global (per device) P2P module.
4090  */
4091 static void wpas_p2p_deinit_global(struct wpa_global *global)
4092 {
4093         struct wpa_supplicant *wpa_s, *tmp;
4094
4095         wpa_s = global->ifaces;
4096
4097         wpas_p2p_service_flush(global->p2p_init_wpa_s);
4098
4099         /* Remove remaining P2P group interfaces */
4100         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
4101                 wpa_s = wpa_s->next;
4102         while (wpa_s) {
4103                 tmp = global->ifaces;
4104                 while (tmp &&
4105                        (tmp == wpa_s ||
4106                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
4107                         tmp = tmp->next;
4108                 }
4109                 if (tmp == NULL)
4110                         break;
4111                 /* Disconnect from the P2P group and deinit the interface */
4112                 wpas_p2p_disconnect(tmp);
4113         }
4114
4115         /*
4116          * Deinit GO data on any possibly remaining interface (if main
4117          * interface is used as GO).
4118          */
4119         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4120                 if (wpa_s->ap_iface)
4121                         wpas_p2p_group_deinit(wpa_s);
4122         }
4123
4124         p2p_deinit(global->p2p);
4125         global->p2p = NULL;
4126         global->p2p_init_wpa_s = NULL;
4127 }
4128
4129
4130 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4131 {
4132         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
4133             wpa_s->conf->p2p_no_group_iface)
4134                 return 0; /* separate interface disabled per configuration */
4135         if (wpa_s->drv_flags &
4136             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4137              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4138                 return 1; /* P2P group requires a new interface in every case
4139                            */
4140         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4141                 return 0; /* driver does not support concurrent operations */
4142         if (wpa_s->global->ifaces->next)
4143                 return 1; /* more that one interface already in use */
4144         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4145                 return 1; /* this interface is already in use */
4146         return 0;
4147 }
4148
4149
4150 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4151                                  const u8 *peer_addr,
4152                                  enum p2p_wps_method wps_method,
4153                                  int go_intent, const u8 *own_interface_addr,
4154                                  unsigned int force_freq, int persistent_group,
4155                                  struct wpa_ssid *ssid, unsigned int pref_freq)
4156 {
4157         if (persistent_group && wpa_s->conf->persistent_reconnect)
4158                 persistent_group = 2;
4159
4160         /*
4161          * Increase GO config timeout if HT40 is used since it takes some time
4162          * to scan channels for coex purposes before the BSS can be started.
4163          */
4164         p2p_set_config_timeout(wpa_s->global->p2p,
4165                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4166
4167         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4168                            go_intent, own_interface_addr, force_freq,
4169                            persistent_group, ssid ? ssid->ssid : NULL,
4170                            ssid ? ssid->ssid_len : 0,
4171                            wpa_s->p2p_pd_before_go_neg, pref_freq,
4172                            wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4173                            0);
4174 }
4175
4176
4177 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4178                                 const u8 *peer_addr,
4179                                 enum p2p_wps_method wps_method,
4180                                 int go_intent, const u8 *own_interface_addr,
4181                                 unsigned int force_freq, int persistent_group,
4182                                 struct wpa_ssid *ssid, unsigned int pref_freq)
4183 {
4184         if (persistent_group && wpa_s->conf->persistent_reconnect)
4185                 persistent_group = 2;
4186
4187         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4188                              go_intent, own_interface_addr, force_freq,
4189                              persistent_group, ssid ? ssid->ssid : NULL,
4190                              ssid ? ssid->ssid_len : 0, pref_freq,
4191                              wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4192                              0);
4193 }
4194
4195
4196 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4197 {
4198         wpa_s->p2p_join_scan_count++;
4199         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4200                    wpa_s->p2p_join_scan_count);
4201         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4202                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4203                            " for join operationg - stop join attempt",
4204                            MAC2STR(wpa_s->pending_join_iface_addr));
4205                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4206                 if (wpa_s->p2p_auto_pd) {
4207                         wpa_s->p2p_auto_pd = 0;
4208                         wpa_msg_global(wpa_s, MSG_INFO,
4209                                        P2P_EVENT_PROV_DISC_FAILURE
4210                                        " p2p_dev_addr=" MACSTR " status=N/A",
4211                                        MAC2STR(wpa_s->pending_join_dev_addr));
4212                         return;
4213                 }
4214                 wpa_msg_global(wpa_s->parent, MSG_INFO,
4215                                P2P_EVENT_GROUP_FORMATION_FAILURE);
4216         }
4217 }
4218
4219
4220 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4221 {
4222         int res;
4223         unsigned int num, i;
4224         struct wpa_used_freq_data *freqs;
4225
4226         if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4227                 /* Multiple channels are supported and not all are in use */
4228                 return 0;
4229         }
4230
4231         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4232                           sizeof(struct wpa_used_freq_data));
4233         if (!freqs)
4234                 return 1;
4235
4236         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4237                                         wpa_s->num_multichan_concurrent);
4238
4239         for (i = 0; i < num; i++) {
4240                 if (freqs[i].freq == freq) {
4241                         wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4242                                    freq);
4243                         res = 0;
4244                         goto exit_free;
4245                 }
4246         }
4247
4248         wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
4249         res = 1;
4250
4251 exit_free:
4252         os_free(freqs);
4253         return res;
4254 }
4255
4256
4257 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4258                             const u8 *peer_dev_addr)
4259 {
4260         struct wpa_bss *bss;
4261         int updated;
4262
4263         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4264         if (bss == NULL)
4265                 return -1;
4266         if (bss->last_update_idx < wpa_s->bss_update_idx) {
4267                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4268                            "last scan");
4269                 return 0;
4270         }
4271
4272         updated = os_reltime_before(&wpa_s->p2p_auto_started,
4273                                     &bss->last_update);
4274         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4275                    "%ld.%06ld (%supdated in last scan)",
4276                    bss->last_update.sec, bss->last_update.usec,
4277                    updated ? "": "not ");
4278
4279         return updated;
4280 }
4281
4282
4283 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4284                                    struct wpa_scan_results *scan_res)
4285 {
4286         struct wpa_bss *bss = NULL;
4287         int freq;
4288         u8 iface_addr[ETH_ALEN];
4289
4290         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4291
4292         if (wpa_s->global->p2p_disabled)
4293                 return;
4294
4295         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4296                    scan_res ? (int) scan_res->num : -1,
4297                    wpa_s->p2p_auto_join ? "auto_" : "");
4298
4299         if (scan_res)
4300                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4301
4302         if (wpa_s->p2p_auto_pd) {
4303                 int join = wpas_p2p_peer_go(wpa_s,
4304                                             wpa_s->pending_join_dev_addr);
4305                 if (join == 0 &&
4306                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4307                         wpa_s->auto_pd_scan_retry++;
4308                         bss = wpa_bss_get_bssid_latest(
4309                                 wpa_s, wpa_s->pending_join_dev_addr);
4310                         if (bss) {
4311                                 freq = bss->freq;
4312                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4313                                            "the peer " MACSTR " at %d MHz",
4314                                            wpa_s->auto_pd_scan_retry,
4315                                            MAC2STR(wpa_s->
4316                                                    pending_join_dev_addr),
4317                                            freq);
4318                                 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4319                                 return;
4320                         }
4321                 }
4322
4323                 if (join < 0)
4324                         join = 0;
4325
4326                 wpa_s->p2p_auto_pd = 0;
4327                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4328                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4329                            MAC2STR(wpa_s->pending_join_dev_addr), join);
4330                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4331                                       wpa_s->pending_join_dev_addr, NULL,
4332                                       wpa_s->pending_pd_config_methods, join,
4333                                       0, wpa_s->user_initiated_pd) < 0) {
4334                         wpa_s->p2p_auto_pd = 0;
4335                         wpa_msg_global(wpa_s, MSG_INFO,
4336                                        P2P_EVENT_PROV_DISC_FAILURE
4337                                        " p2p_dev_addr=" MACSTR " status=N/A",
4338                                        MAC2STR(wpa_s->pending_join_dev_addr));
4339                 }
4340                 return;
4341         }
4342
4343         if (wpa_s->p2p_auto_join) {
4344                 int join = wpas_p2p_peer_go(wpa_s,
4345                                             wpa_s->pending_join_dev_addr);
4346                 if (join < 0) {
4347                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4348                                    "running a GO -> use GO Negotiation");
4349                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4350                                        P2P_EVENT_FALLBACK_TO_GO_NEG
4351                                        "reason=peer-not-running-GO");
4352                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4353                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4354                                          wpa_s->p2p_persistent_group, 0, 0, 0,
4355                                          wpa_s->p2p_go_intent,
4356                                          wpa_s->p2p_connect_freq,
4357                                          wpa_s->p2p_persistent_id,
4358                                          wpa_s->p2p_pd_before_go_neg,
4359                                          wpa_s->p2p_go_ht40,
4360                                          wpa_s->p2p_go_vht);
4361                         return;
4362                 }
4363
4364                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4365                            "try to join the group", join ? "" :
4366                            " in older scan");
4367                 if (!join) {
4368                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4369                                        P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED);
4370                         wpa_s->p2p_fallback_to_go_neg = 1;
4371                 }
4372         }
4373
4374         freq = p2p_get_oper_freq(wpa_s->global->p2p,
4375                                  wpa_s->pending_join_iface_addr);
4376         if (freq < 0 &&
4377             p2p_get_interface_addr(wpa_s->global->p2p,
4378                                    wpa_s->pending_join_dev_addr,
4379                                    iface_addr) == 0 &&
4380             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0
4381             && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) {
4382                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4383                            "address for join from " MACSTR " to " MACSTR
4384                            " based on newly discovered P2P peer entry",
4385                            MAC2STR(wpa_s->pending_join_iface_addr),
4386                            MAC2STR(iface_addr));
4387                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4388                           ETH_ALEN);
4389
4390                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4391                                          wpa_s->pending_join_iface_addr);
4392         }
4393         if (freq >= 0) {
4394                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4395                            "from P2P peer table: %d MHz", freq);
4396         }
4397         if (wpa_s->p2p_join_ssid_len) {
4398                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4399                            MACSTR " and SSID %s",
4400                            MAC2STR(wpa_s->pending_join_iface_addr),
4401                            wpa_ssid_txt(wpa_s->p2p_join_ssid,
4402                                         wpa_s->p2p_join_ssid_len));
4403                 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4404                                   wpa_s->p2p_join_ssid,
4405                                   wpa_s->p2p_join_ssid_len);
4406         }
4407         if (!bss) {
4408                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4409                            MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4410                 bss = wpa_bss_get_bssid_latest(wpa_s,
4411                                                wpa_s->pending_join_iface_addr);
4412         }
4413         if (bss) {
4414                 freq = bss->freq;
4415                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4416                            "from BSS table: %d MHz (SSID %s)", freq,
4417                            wpa_ssid_txt(bss->ssid, bss->ssid_len));
4418         }
4419         if (freq > 0) {
4420                 u16 method;
4421
4422                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4423                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4424                                        P2P_EVENT_GROUP_FORMATION_FAILURE
4425                                        "reason=FREQ_CONFLICT");
4426                         return;
4427                 }
4428
4429                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4430                            "prior to joining an existing group (GO " MACSTR
4431                            " freq=%u MHz)",
4432                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
4433                 wpa_s->pending_pd_before_join = 1;
4434
4435                 switch (wpa_s->pending_join_wps_method) {
4436                 case WPS_PIN_DISPLAY:
4437                         method = WPS_CONFIG_KEYPAD;
4438                         break;
4439                 case WPS_PIN_KEYPAD:
4440                         method = WPS_CONFIG_DISPLAY;
4441                         break;
4442                 case WPS_PBC:
4443                         method = WPS_CONFIG_PUSHBUTTON;
4444                         break;
4445                 default:
4446                         method = 0;
4447                         break;
4448                 }
4449
4450                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4451                                                wpa_s->pending_join_dev_addr) ==
4452                      method)) {
4453                         /*
4454                          * We have already performed provision discovery for
4455                          * joining the group. Proceed directly to join
4456                          * operation without duplicated provision discovery. */
4457                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4458                                    "with " MACSTR " already done - proceed to "
4459                                    "join",
4460                                    MAC2STR(wpa_s->pending_join_dev_addr));
4461                         wpa_s->pending_pd_before_join = 0;
4462                         goto start;
4463                 }
4464
4465                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4466                                       wpa_s->pending_join_dev_addr,
4467                                       NULL, method, 1,
4468                                       freq, wpa_s->user_initiated_pd) < 0) {
4469                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4470                                    "Discovery Request before joining an "
4471                                    "existing group");
4472                         wpa_s->pending_pd_before_join = 0;
4473                         goto start;
4474                 }
4475                 return;
4476         }
4477
4478         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4479         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4480         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4481         wpas_p2p_check_join_scan_limit(wpa_s);
4482         return;
4483
4484 start:
4485         /* Start join operation immediately */
4486         wpas_p2p_join_start(wpa_s, 0, NULL, 0);
4487 }
4488
4489
4490 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4491                                    const u8 *ssid, size_t ssid_len)
4492 {
4493         int ret;
4494         struct wpa_driver_scan_params params;
4495         struct wpabuf *wps_ie, *ies;
4496         size_t ielen;
4497         int freqs[2] = { 0, 0 };
4498
4499         os_memset(&params, 0, sizeof(params));
4500
4501         /* P2P Wildcard SSID */
4502         params.num_ssids = 1;
4503         if (ssid && ssid_len) {
4504                 params.ssids[0].ssid = ssid;
4505                 params.ssids[0].ssid_len = ssid_len;
4506                 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4507                 wpa_s->p2p_join_ssid_len = ssid_len;
4508         } else {
4509                 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4510                 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4511                 wpa_s->p2p_join_ssid_len = 0;
4512         }
4513
4514         wpa_s->wps->dev.p2p = 1;
4515         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4516                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4517                                         NULL);
4518         if (wps_ie == NULL) {
4519                 wpas_p2p_scan_res_join(wpa_s, NULL);
4520                 return;
4521         }
4522
4523         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4524         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4525         if (ies == NULL) {
4526                 wpabuf_free(wps_ie);
4527                 wpas_p2p_scan_res_join(wpa_s, NULL);
4528                 return;
4529         }
4530         wpabuf_put_buf(ies, wps_ie);
4531         wpabuf_free(wps_ie);
4532
4533         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4534
4535         params.p2p_probe = 1;
4536         params.extra_ies = wpabuf_head(ies);
4537         params.extra_ies_len = wpabuf_len(ies);
4538
4539         if (!freq) {
4540                 int oper_freq;
4541                 /*
4542                  * If freq is not provided, check the operating freq of the GO
4543                  * and use a single channel scan on if possible.
4544                  */
4545                 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4546                                               wpa_s->pending_join_iface_addr);
4547                 if (oper_freq > 0)
4548                         freq = oper_freq;
4549         }
4550         if (freq > 0) {
4551                 freqs[0] = freq;
4552                 params.freqs = freqs;
4553         }
4554
4555         /*
4556          * Run a scan to update BSS table and start Provision Discovery once
4557          * the new scan results become available.
4558          */
4559         ret = wpa_drv_scan(wpa_s, &params);
4560         if (!ret) {
4561                 os_get_reltime(&wpa_s->scan_trigger_time);
4562                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
4563                 wpa_s->own_scan_requested = 1;
4564         }
4565
4566         wpabuf_free(ies);
4567
4568         if (ret) {
4569                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
4570                            "try again later");
4571                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4572                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4573                 wpas_p2p_check_join_scan_limit(wpa_s);
4574         }
4575 }
4576
4577
4578 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
4579 {
4580         struct wpa_supplicant *wpa_s = eloop_ctx;
4581         wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
4582 }
4583
4584
4585 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
4586                          const u8 *dev_addr, enum p2p_wps_method wps_method,
4587                          int auto_join, int op_freq,
4588                          const u8 *ssid, size_t ssid_len)
4589 {
4590         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
4591                    MACSTR " dev " MACSTR " op_freq=%d)%s",
4592                    MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
4593                    auto_join ? " (auto_join)" : "");
4594         if (ssid && ssid_len) {
4595                 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
4596                            wpa_ssid_txt(ssid, ssid_len));
4597         }
4598
4599         wpa_s->p2p_auto_pd = 0;
4600         wpa_s->p2p_auto_join = !!auto_join;
4601         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
4602         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
4603         wpa_s->pending_join_wps_method = wps_method;
4604
4605         /* Make sure we are not running find during connection establishment */
4606         wpas_p2p_stop_find(wpa_s);
4607
4608         wpa_s->p2p_join_scan_count = 0;
4609         wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
4610         return 0;
4611 }
4612
4613
4614 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
4615                                const u8 *ssid, size_t ssid_len)
4616 {
4617         struct wpa_supplicant *group;
4618         struct p2p_go_neg_results res;
4619         struct wpa_bss *bss;
4620
4621         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
4622         if (group == NULL)
4623                 return -1;
4624         if (group != wpa_s) {
4625                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
4626                           sizeof(group->p2p_pin));
4627                 group->p2p_wps_method = wpa_s->p2p_wps_method;
4628         } else {
4629                 /*
4630                  * Need to mark the current interface for p2p_group_formation
4631                  * when a separate group interface is not used. This is needed
4632                  * to allow p2p_cancel stop a pending p2p_connect-join.
4633                  * wpas_p2p_init_group_interface() addresses this for the case
4634                  * where a separate group interface is used.
4635                  */
4636                 wpa_s->global->p2p_group_formation = wpa_s;
4637         }
4638
4639         group->p2p_in_provisioning = 1;
4640         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
4641
4642         os_memset(&res, 0, sizeof(res));
4643         os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
4644         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
4645                   ETH_ALEN);
4646         res.wps_method = wpa_s->pending_join_wps_method;
4647         if (freq && ssid && ssid_len) {
4648                 res.freq = freq;
4649                 res.ssid_len = ssid_len;
4650                 os_memcpy(res.ssid, ssid, ssid_len);
4651         } else {
4652                 bss = wpa_bss_get_bssid_latest(wpa_s,
4653                                                wpa_s->pending_join_iface_addr);
4654                 if (bss) {
4655                         res.freq = bss->freq;
4656                         res.ssid_len = bss->ssid_len;
4657                         os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
4658                         wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
4659                                    bss->freq,
4660                                    wpa_ssid_txt(bss->ssid, bss->ssid_len));
4661                 }
4662         }
4663
4664         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
4665                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
4666                            "starting client");
4667                 wpa_drv_cancel_remain_on_channel(wpa_s);
4668                 wpa_s->off_channel_freq = 0;
4669                 wpa_s->roc_waiting_drv_freq = 0;
4670         }
4671         wpas_start_wps_enrollee(group, &res);
4672
4673         /*
4674          * Allow a longer timeout for join-a-running-group than normal 15
4675          * second group formation timeout since the GO may not have authorized
4676          * our connection yet.
4677          */
4678         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4679         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
4680                                wpa_s, NULL);
4681
4682         return 0;
4683 }
4684
4685
4686 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
4687                                 int *force_freq, int *pref_freq, int go)
4688 {
4689         struct wpa_used_freq_data *freqs;
4690         int res, best_freq, num_unused;
4691         unsigned int freq_in_use = 0, num, i;
4692
4693         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4694                           sizeof(struct wpa_used_freq_data));
4695         if (!freqs)
4696                 return -1;
4697
4698         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4699                                         wpa_s->num_multichan_concurrent);
4700
4701         /*
4702          * It is possible that the total number of used frequencies is bigger
4703          * than the number of frequencies used for P2P, so get the system wide
4704          * number of unused frequencies.
4705          */
4706         num_unused = wpas_p2p_num_unused_channels(wpa_s);
4707
4708         wpa_printf(MSG_DEBUG,
4709                    "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
4710                    freq, wpa_s->num_multichan_concurrent, num, num_unused);
4711
4712         if (freq > 0) {
4713                 int ret;
4714                 if (go)
4715                         ret = p2p_supported_freq(wpa_s->global->p2p, freq);
4716                 else
4717                         ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
4718                 if (!ret) {
4719                         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
4720                             ieee80211_is_dfs(freq)) {
4721                                 /*
4722                                  * If freq is a DFS channel and DFS is offloaded
4723                                  * to the driver, allow P2P GO to use it.
4724                                  */
4725                                 wpa_printf(MSG_DEBUG,
4726                                            "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver",
4727                                            freq);
4728                         } else {
4729                                 wpa_printf(MSG_DEBUG,
4730                                            "P2P: The forced channel (%u MHz) is not supported for P2P uses",
4731                                            freq);
4732                                 res = -3;
4733                                 goto exit_free;
4734                         }
4735                 }
4736
4737                 for (i = 0; i < num; i++) {
4738                         if (freqs[i].freq == freq)
4739                                 freq_in_use = 1;
4740                 }
4741
4742                 if (num_unused <= 0 && !freq_in_use) {
4743                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
4744                                    freq);
4745                         res = -2;
4746                         goto exit_free;
4747                 }
4748                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
4749                            "requested channel (%u MHz)", freq);
4750                 *force_freq = freq;
4751                 goto exit_ok;
4752         }
4753
4754         best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
4755
4756         /* We have a candidate frequency to use */
4757         if (best_freq > 0) {
4758                 if (*pref_freq == 0 && num_unused > 0) {
4759                         wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
4760                                    best_freq);
4761                         *pref_freq = best_freq;
4762                 } else {
4763                         wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
4764                                    best_freq);
4765                         *force_freq = best_freq;
4766                 }
4767         } else if (num_unused > 0) {
4768                 wpa_printf(MSG_DEBUG,
4769                            "P2P: Current operating channels are not available for P2P. Try to use another channel");
4770                 *force_freq = 0;
4771         } else {
4772                 wpa_printf(MSG_DEBUG,
4773                            "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
4774                 res = -2;
4775                 goto exit_free;
4776         }
4777
4778 exit_ok:
4779         res = 0;
4780 exit_free:
4781         os_free(freqs);
4782         return res;
4783 }
4784
4785
4786 /**
4787  * wpas_p2p_connect - Request P2P Group Formation to be started
4788  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4789  * @peer_addr: Address of the peer P2P Device
4790  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
4791  * @persistent_group: Whether to create a persistent group
4792  * @auto_join: Whether to select join vs. GO Negotiation automatically
4793  * @join: Whether to join an existing group (as a client) instead of starting
4794  *      Group Owner negotiation; @peer_addr is BSSID in that case
4795  * @auth: Whether to only authorize the connection instead of doing that and
4796  *      initiating Group Owner negotiation
4797  * @go_intent: GO Intent or -1 to use default
4798  * @freq: Frequency for the group or 0 for auto-selection
4799  * @persistent_id: Persistent group credentials to use for forcing GO
4800  *      parameters or -1 to generate new values (SSID/passphrase)
4801  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
4802  *      interoperability workaround when initiating group formation
4803  * @ht40: Start GO with 40 MHz channel width
4804  * @vht:  Start GO with VHT support
4805  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
4806  *      failure, -2 on failure due to channel not currently available,
4807  *      -3 if forced channel is not supported
4808  */
4809 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4810                      const char *pin, enum p2p_wps_method wps_method,
4811                      int persistent_group, int auto_join, int join, int auth,
4812                      int go_intent, int freq, int persistent_id, int pd,
4813                      int ht40, int vht)
4814 {
4815         int force_freq = 0, pref_freq = 0;
4816         int ret = 0, res;
4817         enum wpa_driver_if_type iftype;
4818         const u8 *if_addr;
4819         struct wpa_ssid *ssid = NULL;
4820
4821         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4822                 return -1;
4823
4824         if (persistent_id >= 0) {
4825                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
4826                 if (ssid == NULL || ssid->disabled != 2 ||
4827                     ssid->mode != WPAS_MODE_P2P_GO)
4828                         return -1;
4829         }
4830
4831         os_free(wpa_s->global->add_psk);
4832         wpa_s->global->add_psk = NULL;
4833
4834         wpa_s->global->p2p_fail_on_wps_complete = 0;
4835         wpa_s->global->pending_p2ps_group = 0;
4836
4837         if (go_intent < 0)
4838                 go_intent = wpa_s->conf->p2p_go_intent;
4839
4840         if (!auth)
4841                 wpa_s->p2p_long_listen = 0;
4842
4843         wpa_s->p2p_wps_method = wps_method;
4844         wpa_s->p2p_persistent_group = !!persistent_group;
4845         wpa_s->p2p_persistent_id = persistent_id;
4846         wpa_s->p2p_go_intent = go_intent;
4847         wpa_s->p2p_connect_freq = freq;
4848         wpa_s->p2p_fallback_to_go_neg = 0;
4849         wpa_s->p2p_pd_before_go_neg = !!pd;
4850         wpa_s->p2p_go_ht40 = !!ht40;
4851         wpa_s->p2p_go_vht = !!vht;
4852
4853         if (pin)
4854                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
4855         else if (wps_method == WPS_PIN_DISPLAY) {
4856                 ret = wps_generate_pin();
4857                 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin),
4858                                   "%08d", ret);
4859                 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res))
4860                         wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0';
4861                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
4862                            wpa_s->p2p_pin);
4863         } else
4864                 wpa_s->p2p_pin[0] = '\0';
4865
4866         if (join || auto_join) {
4867                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
4868                 if (auth) {
4869                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
4870                                    "connect a running group from " MACSTR,
4871                                    MAC2STR(peer_addr));
4872                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
4873                         return ret;
4874                 }
4875                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
4876                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
4877                                            iface_addr) < 0) {
4878                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
4879                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
4880                                          dev_addr);
4881                 }
4882                 if (auto_join) {
4883                         os_get_reltime(&wpa_s->p2p_auto_started);
4884                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
4885                                    "%ld.%06ld",
4886                                    wpa_s->p2p_auto_started.sec,
4887                                    wpa_s->p2p_auto_started.usec);
4888                 }
4889                 wpa_s->user_initiated_pd = 1;
4890                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
4891                                   auto_join, freq, NULL, 0) < 0)
4892                         return -1;
4893                 return ret;
4894         }
4895
4896         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
4897                                    go_intent == 15);
4898         if (res)
4899                 return res;
4900         wpas_p2p_set_own_freq_preference(wpa_s,
4901                                          force_freq ? force_freq : pref_freq);
4902
4903         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
4904
4905         if (wpa_s->create_p2p_iface) {
4906                 /* Prepare to add a new interface for the group */
4907                 iftype = WPA_IF_P2P_GROUP;
4908                 if (go_intent == 15)
4909                         iftype = WPA_IF_P2P_GO;
4910                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
4911                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
4912                                    "interface for the group");
4913                         return -1;
4914                 }
4915
4916                 if_addr = wpa_s->pending_interface_addr;
4917         } else
4918                 if_addr = wpa_s->own_addr;
4919
4920         if (auth) {
4921                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
4922                                          go_intent, if_addr,
4923                                          force_freq, persistent_group, ssid,
4924                                          pref_freq) < 0)
4925                         return -1;
4926                 return ret;
4927         }
4928
4929         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
4930                                   go_intent, if_addr, force_freq,
4931                                   persistent_group, ssid, pref_freq) < 0) {
4932                 if (wpa_s->create_p2p_iface)
4933                         wpas_p2p_remove_pending_group_interface(wpa_s);
4934                 return -1;
4935         }
4936         return ret;
4937 }
4938
4939
4940 /**
4941  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
4942  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4943  * @freq: Frequency of the channel in MHz
4944  * @duration: Duration of the stay on the channel in milliseconds
4945  *
4946  * This callback is called when the driver indicates that it has started the
4947  * requested remain-on-channel duration.
4948  */
4949 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
4950                                    unsigned int freq, unsigned int duration)
4951 {
4952         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4953                 return;
4954         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)",
4955                    wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
4956                    wpa_s->roc_waiting_drv_freq, freq, duration);
4957         if (wpa_s->off_channel_freq &&
4958             wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
4959                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
4960                               wpa_s->pending_listen_duration);
4961                 wpa_s->pending_listen_freq = 0;
4962         } else {
4963                 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
4964                            wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
4965                            freq, duration);
4966         }
4967 }
4968
4969
4970 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout)
4971 {
4972         /* Limit maximum Listen state time based on driver limitation. */
4973         if (timeout > wpa_s->max_remain_on_chan)
4974                 timeout = wpa_s->max_remain_on_chan;
4975
4976         return p2p_listen(wpa_s->global->p2p, timeout);
4977 }
4978
4979
4980 /**
4981  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
4982  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4983  * @freq: Frequency of the channel in MHz
4984  *
4985  * This callback is called when the driver indicates that a remain-on-channel
4986  * operation has been completed, i.e., the duration on the requested channel
4987  * has timed out.
4988  */
4989 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
4990                                           unsigned int freq)
4991 {
4992         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
4993                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
4994                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
4995         wpas_p2p_listen_work_done(wpa_s);
4996         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4997                 return;
4998         if (wpa_s->p2p_long_listen > 0)
4999                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
5000         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
5001                 return; /* P2P module started a new operation */
5002         if (offchannel_pending_action_tx(wpa_s))
5003                 return;
5004         if (wpa_s->p2p_long_listen > 0) {
5005                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
5006                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
5007         } else {
5008                 /*
5009                  * When listen duration is over, stop listen & update p2p_state
5010                  * to IDLE.
5011                  */
5012                 p2p_stop_listen(wpa_s->global->p2p);
5013         }
5014 }
5015
5016
5017 /**
5018  * wpas_p2p_group_remove - Remove a P2P group
5019  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5020  * @ifname: Network interface name of the group interface or "*" to remove all
5021  *      groups
5022  * Returns: 0 on success, -1 on failure
5023  *
5024  * This function is used to remove a P2P group. This can be used to disconnect
5025  * from a group in which the local end is a P2P Client or to end a P2P Group in
5026  * case the local end is the Group Owner. If a virtual network interface was
5027  * created for this group, that interface will be removed. Otherwise, only the
5028  * configured P2P group network will be removed from the interface.
5029  */
5030 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
5031 {
5032         struct wpa_global *global = wpa_s->global;
5033         struct wpa_supplicant *calling_wpa_s = wpa_s;
5034
5035         if (os_strcmp(ifname, "*") == 0) {
5036                 struct wpa_supplicant *prev;
5037                 wpa_s = global->ifaces;
5038                 while (wpa_s) {
5039                         prev = wpa_s;
5040                         wpa_s = wpa_s->next;
5041                         if (prev->p2p_group_interface !=
5042                             NOT_P2P_GROUP_INTERFACE ||
5043                             (prev->current_ssid &&
5044                              prev->current_ssid->p2p_group))
5045                                 wpas_p2p_disconnect_safely(prev, calling_wpa_s);
5046                 }
5047                 return 0;
5048         }
5049
5050         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5051                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5052                         break;
5053         }
5054
5055         return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s);
5056 }
5057
5058
5059 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
5060 {
5061         unsigned int r;
5062
5063         if (freq == 2) {
5064                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
5065                            "band");
5066                 if (wpa_s->best_24_freq > 0 &&
5067                     p2p_supported_freq_go(wpa_s->global->p2p,
5068                                           wpa_s->best_24_freq)) {
5069                         freq = wpa_s->best_24_freq;
5070                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
5071                                    "channel: %d MHz", freq);
5072                 } else {
5073                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5074                                 return -1;
5075                         freq = 2412 + (r % 3) * 25;
5076                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
5077                                    "channel: %d MHz", freq);
5078                 }
5079         }
5080
5081         if (freq == 5) {
5082                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
5083                            "band");
5084                 if (wpa_s->best_5_freq > 0 &&
5085                     p2p_supported_freq_go(wpa_s->global->p2p,
5086                                        wpa_s->best_5_freq)) {
5087                         freq = wpa_s->best_5_freq;
5088                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
5089                                    "channel: %d MHz", freq);
5090                 } else {
5091                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5092                                 return -1;
5093                         freq = 5180 + (r % 4) * 20;
5094                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5095                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
5096                                            "5 GHz channel for P2P group");
5097                                 return -1;
5098                         }
5099                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
5100                                    "channel: %d MHz", freq);
5101                 }
5102         }
5103
5104         if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5105                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5106                     ieee80211_is_dfs(freq)) {
5107                         /*
5108                          * If freq is a DFS channel and DFS is offloaded to the
5109                          * driver, allow P2P GO to use it.
5110                          */
5111                         wpa_printf(MSG_DEBUG, "P2P: "
5112                                    "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded",
5113                                    __func__, freq);
5114                         return freq;
5115                 }
5116                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
5117                            "(%u MHz) is not supported for P2P uses",
5118                            freq);
5119                 return -1;
5120         }
5121
5122         return freq;
5123 }
5124
5125
5126 static int wpas_p2p_select_freq_no_pref(struct wpa_supplicant *wpa_s,
5127                                         struct p2p_go_neg_results *params,
5128                                         const struct p2p_channels *channels)
5129 {
5130         unsigned int i, r;
5131
5132         /* first try some random selection of the social channels */
5133         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5134                 return -1;
5135
5136         for (i = 0; i < 3; i++) {
5137                 params->freq = 2412 + ((r + i) % 3) * 25;
5138                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5139                     freq_included(channels, params->freq) &&
5140                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5141                         goto out;
5142         }
5143
5144         /* try all channels in reg. class 81 */
5145         for (i = 0; i < 11; i++) {
5146                 params->freq = 2412 + i * 5;
5147                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5148                     freq_included(channels, params->freq) &&
5149                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5150                         goto out;
5151         }
5152
5153         /* try all channels in operating class 115 */
5154         for (i = 0; i < 4; i++) {
5155                 params->freq = 5180 + i * 20;
5156                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5157                     freq_included(channels, params->freq) &&
5158                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5159                         goto out;
5160         }
5161
5162         /* try all channels in operating class 124 */
5163         for (i = 0; i < 4; i++) {
5164                 params->freq = 5745 + i * 20;
5165                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5166                     freq_included(channels, params->freq) &&
5167                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5168                         goto out;
5169         }
5170
5171         /* try social channel class 180 channel 2 */
5172         params->freq = 58320 + 1 * 2160;
5173         if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5174             freq_included(channels, params->freq) &&
5175             p2p_supported_freq(wpa_s->global->p2p, params->freq))
5176                 goto out;
5177
5178         /* try all channels in reg. class 180 */
5179         for (i = 0; i < 4; i++) {
5180                 params->freq = 58320 + i * 2160;
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         wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed");
5188         return -1;
5189 out:
5190         wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)",
5191                    params->freq);
5192         return 0;
5193 }
5194
5195
5196 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
5197                                    struct p2p_go_neg_results *params,
5198                                    int freq, int ht40, int vht,
5199                                    const struct p2p_channels *channels)
5200 {
5201         struct wpa_used_freq_data *freqs;
5202         unsigned int pref_freq, cand_freq;
5203         unsigned int num, i;
5204
5205         os_memset(params, 0, sizeof(*params));
5206         params->role_go = 1;
5207         params->ht40 = ht40;
5208         params->vht = vht;
5209         if (freq) {
5210                 if (!freq_included(channels, freq)) {
5211                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
5212                                    "accepted", freq);
5213                         return -1;
5214                 }
5215                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced "
5216                            "frequency %d MHz", freq);
5217                 params->freq = freq;
5218         } else if (wpa_s->conf->p2p_oper_reg_class == 81 &&
5219                    wpa_s->conf->p2p_oper_channel >= 1 &&
5220                    wpa_s->conf->p2p_oper_channel <= 11 &&
5221                    freq_included(channels,
5222                                  2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
5223                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
5224                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5225                            "frequency %d MHz", params->freq);
5226         } else if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
5227                     wpa_s->conf->p2p_oper_reg_class == 116 ||
5228                     wpa_s->conf->p2p_oper_reg_class == 117 ||
5229                     wpa_s->conf->p2p_oper_reg_class == 124 ||
5230                     wpa_s->conf->p2p_oper_reg_class == 125 ||
5231                     wpa_s->conf->p2p_oper_reg_class == 126 ||
5232                     wpa_s->conf->p2p_oper_reg_class == 127) &&
5233                    freq_included(channels,
5234                                  5000 + 5 * wpa_s->conf->p2p_oper_channel)) {
5235                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
5236                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5237                            "frequency %d MHz", params->freq);
5238         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5239                    wpa_s->best_overall_freq > 0 &&
5240                    p2p_supported_freq_go(wpa_s->global->p2p,
5241                                          wpa_s->best_overall_freq) &&
5242                    freq_included(channels, wpa_s->best_overall_freq)) {
5243                 params->freq = wpa_s->best_overall_freq;
5244                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
5245                            "channel %d MHz", params->freq);
5246         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5247                    wpa_s->best_24_freq > 0 &&
5248                    p2p_supported_freq_go(wpa_s->global->p2p,
5249                                          wpa_s->best_24_freq) &&
5250                    freq_included(channels, wpa_s->best_24_freq)) {
5251                 params->freq = wpa_s->best_24_freq;
5252                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
5253                            "channel %d MHz", params->freq);
5254         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5255                    wpa_s->best_5_freq > 0 &&
5256                    p2p_supported_freq_go(wpa_s->global->p2p,
5257                                          wpa_s->best_5_freq) &&
5258                    freq_included(channels, wpa_s->best_5_freq)) {
5259                 params->freq = wpa_s->best_5_freq;
5260                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
5261                            "channel %d MHz", params->freq);
5262         } else if ((pref_freq = p2p_get_pref_freq(wpa_s->global->p2p,
5263                                                   channels))) {
5264                 params->freq = pref_freq;
5265                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
5266                            "channels", params->freq);
5267         } else {
5268                 /* no preference, select some channel */
5269                 if (wpas_p2p_select_freq_no_pref(wpa_s, params, channels) < 0)
5270                         return -1;
5271         }
5272
5273         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5274                           sizeof(struct wpa_used_freq_data));
5275         if (!freqs)
5276                 return -1;
5277
5278         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5279                                         wpa_s->num_multichan_concurrent);
5280
5281         cand_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5282
5283         /* First try the best used frequency if possible */
5284         if (!freq && cand_freq > 0 && freq_included(channels, cand_freq)) {
5285                 params->freq = cand_freq;
5286         } else if (!freq) {
5287                 /* Try any of the used frequencies */
5288                 for (i = 0; i < num; i++) {
5289                         if (freq_included(channels, freqs[i].freq)) {
5290                                 wpa_printf(MSG_DEBUG, "P2P: Force GO on a channel we are already using (%u MHz)",
5291                                            freqs[i].freq);
5292                                 params->freq = freqs[i].freq;
5293                                 break;
5294                         }
5295                 }
5296
5297                 if (i == num) {
5298                         if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5299                                 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using");
5300                                 os_free(freqs);
5301                                 return -1;
5302                         } else {
5303                                 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using. Use one of the free channels");
5304                         }
5305                 }
5306         } else {
5307                 for (i = 0; i < num; i++) {
5308                         if (freqs[i].freq == freq)
5309                                 break;
5310                 }
5311
5312                 if (i == num) {
5313                         if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5314                                 if (freq)
5315                                         wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on freq (%u MHz) as all the channels are in use", freq);
5316                                 os_free(freqs);
5317                                 return -1;
5318                         } else {
5319                                 wpa_printf(MSG_DEBUG, "P2P: Use one of the free channels");
5320                         }
5321                 }
5322         }
5323
5324         os_free(freqs);
5325         return 0;
5326 }
5327
5328
5329 static struct wpa_supplicant *
5330 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
5331                          int go)
5332 {
5333         struct wpa_supplicant *group_wpa_s;
5334
5335         if (!wpas_p2p_create_iface(wpa_s)) {
5336                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
5337                         "operations");
5338                 wpa_s->p2p_first_connection_timeout = 0;
5339                 return wpa_s;
5340         }
5341
5342         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
5343                                          WPA_IF_P2P_CLIENT) < 0) {
5344                 wpa_msg_global(wpa_s, MSG_ERROR,
5345                                "P2P: Failed to add group interface");
5346                 return NULL;
5347         }
5348         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
5349         if (group_wpa_s == NULL) {
5350                 wpa_msg_global(wpa_s, MSG_ERROR,
5351                                "P2P: Failed to initialize group interface");
5352                 wpas_p2p_remove_pending_group_interface(wpa_s);
5353                 return NULL;
5354         }
5355
5356         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
5357                 group_wpa_s->ifname);
5358         group_wpa_s->p2p_first_connection_timeout = 0;
5359         return group_wpa_s;
5360 }
5361
5362
5363 /**
5364  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
5365  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5366  * @persistent_group: Whether to create a persistent group
5367  * @freq: Frequency for the group or 0 to indicate no hardcoding
5368  * @ht40: Start GO with 40 MHz channel width
5369  * @vht:  Start GO with VHT support
5370  * Returns: 0 on success, -1 on failure
5371  *
5372  * This function creates a new P2P group with the local end as the Group Owner,
5373  * i.e., without using Group Owner Negotiation.
5374  */
5375 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
5376                        int freq, int ht40, int vht)
5377 {
5378         struct p2p_go_neg_results params;
5379
5380         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5381                 return -1;
5382
5383         os_free(wpa_s->global->add_psk);
5384         wpa_s->global->add_psk = NULL;
5385
5386         /* Make sure we are not running find during connection establishment */
5387         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
5388         wpas_p2p_stop_find_oper(wpa_s);
5389
5390         freq = wpas_p2p_select_go_freq(wpa_s, freq);
5391         if (freq < 0)
5392                 return -1;
5393
5394         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, NULL))
5395                 return -1;
5396         if (params.freq &&
5397             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
5398                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5399                     ieee80211_is_dfs(params.freq)) {
5400                         /*
5401                          * If freq is a DFS channel and DFS is offloaded to the
5402                          * driver, allow P2P GO to use it.
5403                          */
5404                         wpa_printf(MSG_DEBUG,
5405                                    "P2P: %s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to driver",
5406                                 __func__, params.freq);
5407                 } else {
5408                         wpa_printf(MSG_DEBUG,
5409                                    "P2P: The selected channel for GO (%u MHz) is not supported for P2P uses",
5410                                    params.freq);
5411                         return -1;
5412                 }
5413         }
5414         p2p_go_params(wpa_s->global->p2p, &params);
5415         params.persistent_group = persistent_group;
5416
5417         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
5418         if (wpa_s == NULL)
5419                 return -1;
5420         wpas_start_wps_go(wpa_s, &params, 0);
5421
5422         return 0;
5423 }
5424
5425
5426 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
5427                                  struct wpa_ssid *params, int addr_allocated,
5428                                  int freq)
5429 {
5430         struct wpa_ssid *ssid;
5431
5432         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
5433         if (wpa_s == NULL)
5434                 return -1;
5435         wpa_s->p2p_last_4way_hs_fail = NULL;
5436
5437         wpa_supplicant_ap_deinit(wpa_s);
5438
5439         ssid = wpa_config_add_network(wpa_s->conf);
5440         if (ssid == NULL)
5441                 return -1;
5442         wpa_config_set_network_defaults(ssid);
5443         ssid->temporary = 1;
5444         ssid->proto = WPA_PROTO_RSN;
5445         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
5446         ssid->group_cipher = WPA_CIPHER_CCMP;
5447         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
5448         ssid->ssid = os_malloc(params->ssid_len);
5449         if (ssid->ssid == NULL) {
5450                 wpa_config_remove_network(wpa_s->conf, ssid->id);
5451                 return -1;
5452         }
5453         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
5454         ssid->ssid_len = params->ssid_len;
5455         ssid->p2p_group = 1;
5456         ssid->export_keys = 1;
5457         if (params->psk_set) {
5458                 os_memcpy(ssid->psk, params->psk, 32);
5459                 ssid->psk_set = 1;
5460         }
5461         if (params->passphrase)
5462                 ssid->passphrase = os_strdup(params->passphrase);
5463
5464         wpa_s->show_group_started = 1;
5465         wpa_s->p2p_in_invitation = 1;
5466         wpa_s->p2p_invite_go_freq = freq;
5467
5468         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5469                              NULL);
5470         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5471                                wpas_p2p_group_formation_timeout,
5472                                wpa_s->parent, NULL);
5473         wpa_supplicant_select_network(wpa_s, ssid);
5474
5475         return 0;
5476 }
5477
5478
5479 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
5480                                   struct wpa_ssid *ssid, int addr_allocated,
5481                                   int force_freq, int neg_freq, int ht40,
5482                                   int vht, const struct p2p_channels *channels,
5483                                   int connection_timeout)
5484 {
5485         struct p2p_go_neg_results params;
5486         int go = 0, freq;
5487
5488         if (ssid->disabled != 2 || ssid->ssid == NULL)
5489                 return -1;
5490
5491         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
5492             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
5493                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
5494                            "already running");
5495                 if (go == 0 &&
5496                     eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5497                                          wpa_s->parent, NULL)) {
5498                         /*
5499                          * This can happen if Invitation Response frame was lost
5500                          * and the peer (GO of a persistent group) tries to
5501                          * invite us again. Reschedule the timeout to avoid
5502                          * terminating the wait for the connection too early
5503                          * since we now know that the peer is still trying to
5504                          * invite us instead of having already started the GO.
5505                          */
5506                         wpa_printf(MSG_DEBUG,
5507                                    "P2P: Reschedule group formation timeout since peer is still trying to invite us");
5508                         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5509                                                wpas_p2p_group_formation_timeout,
5510                                                wpa_s->parent, NULL);
5511                 }
5512                 return 0;
5513         }
5514
5515         os_free(wpa_s->global->add_psk);
5516         wpa_s->global->add_psk = NULL;
5517
5518         /* Make sure we are not running find during connection establishment */
5519         wpas_p2p_stop_find_oper(wpa_s);
5520
5521         wpa_s->p2p_fallback_to_go_neg = 0;
5522
5523         if (ssid->mode == WPAS_MODE_P2P_GO) {
5524                 if (force_freq > 0) {
5525                         freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
5526                         if (freq < 0)
5527                                 return -1;
5528                 } else {
5529                         freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
5530                         if (freq < 0 ||
5531                             (freq > 0 && !freq_included(channels, freq)))
5532                                 freq = 0;
5533                 }
5534         } else if (ssid->mode == WPAS_MODE_INFRA) {
5535                 freq = neg_freq;
5536                 if (freq <= 0 || !freq_included(channels, freq)) {
5537                         struct os_reltime now;
5538                         struct wpa_bss *bss =
5539                                 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid);
5540
5541                         os_get_reltime(&now);
5542                         if (bss &&
5543                             !os_reltime_expired(&now, &bss->last_update, 5) &&
5544                             freq_included(channels, bss->freq))
5545                                 freq = bss->freq;
5546                         else
5547                                 freq = 0;
5548                 }
5549
5550                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq);
5551         } else {
5552                 return -1;
5553         }
5554
5555         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, channels))
5556                 return -1;
5557
5558         params.role_go = 1;
5559         params.psk_set = ssid->psk_set;
5560         if (params.psk_set)
5561                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
5562         if (ssid->passphrase) {
5563                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
5564                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
5565                                    "persistent group");
5566                         return -1;
5567                 }
5568                 os_strlcpy(params.passphrase, ssid->passphrase,
5569                            sizeof(params.passphrase));
5570         }
5571         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
5572         params.ssid_len = ssid->ssid_len;
5573         params.persistent_group = 1;
5574
5575         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
5576         if (wpa_s == NULL)
5577                 return -1;
5578
5579         p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS);
5580
5581         wpa_s->p2p_first_connection_timeout = connection_timeout;
5582         wpas_start_wps_go(wpa_s, &params, 0);
5583
5584         return 0;
5585 }
5586
5587
5588 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
5589                                struct wpabuf *proberesp_ies)
5590 {
5591         struct wpa_supplicant *wpa_s = ctx;
5592         if (wpa_s->ap_iface) {
5593                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
5594                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
5595                         wpabuf_free(beacon_ies);
5596                         wpabuf_free(proberesp_ies);
5597                         return;
5598                 }
5599                 if (beacon_ies) {
5600                         wpabuf_free(hapd->p2p_beacon_ie);
5601                         hapd->p2p_beacon_ie = beacon_ies;
5602                 }
5603                 wpabuf_free(hapd->p2p_probe_resp_ie);
5604                 hapd->p2p_probe_resp_ie = proberesp_ies;
5605         } else {
5606                 wpabuf_free(beacon_ies);
5607                 wpabuf_free(proberesp_ies);
5608         }
5609         wpa_supplicant_ap_update_beacon(wpa_s);
5610 }
5611
5612
5613 static void wpas_p2p_idle_update(void *ctx, int idle)
5614 {
5615         struct wpa_supplicant *wpa_s = ctx;
5616         if (!wpa_s->ap_iface)
5617                 return;
5618         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
5619         if (idle) {
5620                 if (wpa_s->global->p2p_fail_on_wps_complete &&
5621                     wpa_s->p2p_in_provisioning) {
5622                         wpas_p2p_grpform_fail_after_wps(wpa_s);
5623                         return;
5624                 }
5625                 wpas_p2p_set_group_idle_timeout(wpa_s);
5626         } else
5627                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
5628 }
5629
5630
5631 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
5632                                        struct wpa_ssid *ssid)
5633 {
5634         struct p2p_group *group;
5635         struct p2p_group_config *cfg;
5636
5637         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5638                 return NULL;
5639
5640         cfg = os_zalloc(sizeof(*cfg));
5641         if (cfg == NULL)
5642                 return NULL;
5643
5644         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
5645                 cfg->persistent_group = 2;
5646         else if (ssid->p2p_persistent_group)
5647                 cfg->persistent_group = 1;
5648         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
5649         if (wpa_s->max_stations &&
5650             wpa_s->max_stations < wpa_s->conf->max_num_sta)
5651                 cfg->max_clients = wpa_s->max_stations;
5652         else
5653                 cfg->max_clients = wpa_s->conf->max_num_sta;
5654         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
5655         cfg->ssid_len = ssid->ssid_len;
5656         cfg->freq = ssid->frequency;
5657         cfg->cb_ctx = wpa_s;
5658         cfg->ie_update = wpas_p2p_ie_update;
5659         cfg->idle_update = wpas_p2p_idle_update;
5660
5661         group = p2p_group_init(wpa_s->global->p2p, cfg);
5662         if (group == NULL)
5663                 os_free(cfg);
5664         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
5665                 p2p_group_notif_formation_done(group);
5666         wpa_s->p2p_group = group;
5667         return group;
5668 }
5669
5670
5671 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5672                           int registrar)
5673 {
5674         struct wpa_ssid *ssid = wpa_s->current_ssid;
5675
5676         if (!wpa_s->p2p_in_provisioning) {
5677                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
5678                            "provisioning not in progress");
5679                 return;
5680         }
5681
5682         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
5683                 u8 go_dev_addr[ETH_ALEN];
5684                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
5685                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
5686                                           ssid->ssid_len);
5687                 /* Clear any stored provisioning info */
5688                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
5689         }
5690
5691         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5692                              NULL);
5693         wpa_s->p2p_go_group_formation_completed = 1;
5694         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
5695                 /*
5696                  * Use a separate timeout for initial data connection to
5697                  * complete to allow the group to be removed automatically if
5698                  * something goes wrong in this step before the P2P group idle
5699                  * timeout mechanism is taken into use.
5700                  */
5701                 wpa_dbg(wpa_s, MSG_DEBUG,
5702                         "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
5703                         P2P_MAX_INITIAL_CONN_WAIT);
5704                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5705                                        wpas_p2p_group_formation_timeout,
5706                                        wpa_s->parent, NULL);
5707         } else if (ssid) {
5708                 /*
5709                  * Use a separate timeout for initial data connection to
5710                  * complete to allow the group to be removed automatically if
5711                  * the client does not complete data connection successfully.
5712                  */
5713                 wpa_dbg(wpa_s, MSG_DEBUG,
5714                         "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
5715                         P2P_MAX_INITIAL_CONN_WAIT_GO);
5716                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
5717                                        wpas_p2p_group_formation_timeout,
5718                                        wpa_s->parent, NULL);
5719                 /*
5720                  * Complete group formation on first successful data connection
5721                  */
5722                 wpa_s->p2p_go_group_formation_completed = 0;
5723         }
5724         if (wpa_s->global->p2p)
5725                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
5726         wpas_group_formation_completed(wpa_s, 1);
5727 }
5728
5729
5730 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
5731                          struct wps_event_fail *fail)
5732 {
5733         if (!wpa_s->p2p_in_provisioning) {
5734                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
5735                            "provisioning not in progress");
5736                 return;
5737         }
5738
5739         if (wpa_s->go_params) {
5740                 p2p_clear_provisioning_info(
5741                         wpa_s->global->p2p,
5742                         wpa_s->go_params->peer_device_addr);
5743         }
5744
5745         wpas_notify_p2p_wps_failed(wpa_s, fail);
5746
5747         if (wpa_s == wpa_s->global->p2p_group_formation) {
5748                 /*
5749                  * Allow some time for the failed WPS negotiation exchange to
5750                  * complete, but remove the group since group formation cannot
5751                  * succeed after provisioning failure.
5752                  */
5753                 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
5754                 wpa_s->global->p2p_fail_on_wps_complete = 1;
5755                 eloop_deplete_timeout(0, 50000,
5756                                       wpas_p2p_group_formation_timeout,
5757                                       wpa_s->parent, NULL);
5758         }
5759 }
5760
5761
5762 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
5763 {
5764         if (!wpa_s->global->p2p_fail_on_wps_complete ||
5765             !wpa_s->p2p_in_provisioning)
5766                 return 0;
5767
5768         wpas_p2p_grpform_fail_after_wps(wpa_s);
5769
5770         return 1;
5771 }
5772
5773
5774 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5775                        const char *config_method,
5776                        enum wpas_p2p_prov_disc_use use,
5777                        struct p2ps_provision *p2ps_prov)
5778 {
5779         u16 config_methods;
5780
5781         wpa_s->global->pending_p2ps_group = 0;
5782         wpa_s->p2p_fallback_to_go_neg = 0;
5783         wpa_s->pending_pd_use = NORMAL_PD;
5784         if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) {
5785                 p2ps_prov->conncap = p2ps_group_capability(
5786                         wpa_s, P2PS_SETUP_NONE, p2ps_prov->role);
5787                 wpa_printf(MSG_DEBUG,
5788                            "P2P: %s conncap: %d - ASP parsed: %x %x %d %s",
5789                            __func__, p2ps_prov->conncap,
5790                            p2ps_prov->adv_id, p2ps_prov->conncap,
5791                            p2ps_prov->status, p2ps_prov->info);
5792
5793                 config_methods = 0;
5794         } else if (os_strncmp(config_method, "display", 7) == 0)
5795                 config_methods = WPS_CONFIG_DISPLAY;
5796         else if (os_strncmp(config_method, "keypad", 6) == 0)
5797                 config_methods = WPS_CONFIG_KEYPAD;
5798         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
5799                  os_strncmp(config_method, "pushbutton", 10) == 0)
5800                 config_methods = WPS_CONFIG_PUSHBUTTON;
5801         else {
5802                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
5803                 os_free(p2ps_prov);
5804                 return -1;
5805         }
5806
5807         if (use == WPAS_P2P_PD_AUTO) {
5808                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
5809                 wpa_s->pending_pd_config_methods = config_methods;
5810                 wpa_s->p2p_auto_pd = 1;
5811                 wpa_s->p2p_auto_join = 0;
5812                 wpa_s->pending_pd_before_join = 0;
5813                 wpa_s->auto_pd_scan_retry = 0;
5814                 wpas_p2p_stop_find(wpa_s);
5815                 wpa_s->p2p_join_scan_count = 0;
5816                 os_get_reltime(&wpa_s->p2p_auto_started);
5817                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
5818                            wpa_s->p2p_auto_started.sec,
5819                            wpa_s->p2p_auto_started.usec);
5820                 wpas_p2p_join_scan(wpa_s, NULL);
5821                 return 0;
5822         }
5823
5824         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) {
5825                 os_free(p2ps_prov);
5826                 return -1;
5827         }
5828
5829         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov,
5830                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
5831                                  0, 1);
5832 }
5833
5834
5835 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
5836                               char *end)
5837 {
5838         return p2p_scan_result_text(ies, ies_len, buf, end);
5839 }
5840
5841
5842 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
5843 {
5844         if (!offchannel_pending_action_tx(wpa_s))
5845                 return;
5846
5847         wpas_p2p_action_tx_clear(wpa_s);
5848
5849         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
5850                    "operation request");
5851         offchannel_clear_pending_action_tx(wpa_s);
5852 }
5853
5854
5855 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
5856                   enum p2p_discovery_type type,
5857                   unsigned int num_req_dev_types, const u8 *req_dev_types,
5858                   const u8 *dev_id, unsigned int search_delay,
5859                   u8 seek_cnt, const char **seek_string, int freq)
5860 {
5861         wpas_p2p_clear_pending_action_tx(wpa_s);
5862         wpa_s->p2p_long_listen = 0;
5863
5864         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
5865             wpa_s->p2p_in_provisioning)
5866                 return -1;
5867
5868         wpa_supplicant_cancel_sched_scan(wpa_s);
5869
5870         return p2p_find(wpa_s->global->p2p, timeout, type,
5871                         num_req_dev_types, req_dev_types, dev_id,
5872                         search_delay, seek_cnt, seek_string, freq);
5873 }
5874
5875
5876 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s,
5877                                             struct wpa_scan_results *scan_res)
5878 {
5879         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
5880
5881         if (wpa_s->p2p_scan_work) {
5882                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
5883                 wpa_s->p2p_scan_work = NULL;
5884                 radio_work_done(work);
5885         }
5886
5887         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5888                 return;
5889
5890         /*
5891          * Indicate that results have been processed so that the P2P module can
5892          * continue pending tasks.
5893          */
5894         p2p_scan_res_handled(wpa_s->global->p2p);
5895 }
5896
5897
5898 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
5899 {
5900         wpas_p2p_clear_pending_action_tx(wpa_s);
5901         wpa_s->p2p_long_listen = 0;
5902         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
5903         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5904
5905         if (wpa_s->global->p2p)
5906                 p2p_stop_find(wpa_s->global->p2p);
5907
5908         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
5909                 wpa_printf(MSG_DEBUG,
5910                            "P2P: Do not consider the scan results after stop_find");
5911                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search;
5912         }
5913 }
5914
5915
5916 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
5917 {
5918         wpas_p2p_stop_find_oper(wpa_s);
5919         if (!wpa_s->global->pending_group_iface_for_p2ps)
5920                 wpas_p2p_remove_pending_group_interface(wpa_s);
5921 }
5922
5923
5924 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
5925 {
5926         struct wpa_supplicant *wpa_s = eloop_ctx;
5927         wpa_s->p2p_long_listen = 0;
5928 }
5929
5930
5931 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
5932 {
5933         int res;
5934
5935         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5936                 return -1;
5937
5938         wpa_supplicant_cancel_sched_scan(wpa_s);
5939         wpas_p2p_clear_pending_action_tx(wpa_s);
5940
5941         if (timeout == 0) {
5942                 /*
5943                  * This is a request for unlimited Listen state. However, at
5944                  * least for now, this is mapped to a Listen state for one
5945                  * hour.
5946                  */
5947                 timeout = 3600;
5948         }
5949         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
5950         wpa_s->p2p_long_listen = 0;
5951
5952         /*
5953          * Stop previous find/listen operation to avoid trying to request a new
5954          * remain-on-channel operation while the driver is still running the
5955          * previous one.
5956          */
5957         if (wpa_s->global->p2p)
5958                 p2p_stop_find(wpa_s->global->p2p);
5959
5960         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
5961         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
5962                 wpa_s->p2p_long_listen = timeout * 1000;
5963                 eloop_register_timeout(timeout, 0,
5964                                        wpas_p2p_long_listen_timeout,
5965                                        wpa_s, NULL);
5966         }
5967
5968         return res;
5969 }
5970
5971
5972 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
5973                           u8 *buf, size_t len, int p2p_group)
5974 {
5975         struct wpabuf *p2p_ie;
5976         int ret;
5977
5978         if (wpa_s->global->p2p_disabled)
5979                 return -1;
5980         /*
5981          * Advertize mandatory cross connection capability even on
5982          * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP.
5983          */
5984         if (wpa_s->conf->p2p_disabled && p2p_group)
5985                 return -1;
5986         if (wpa_s->global->p2p == NULL)
5987                 return -1;
5988         if (bss == NULL)
5989                 return -1;
5990
5991         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
5992         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
5993                                p2p_group, p2p_ie);
5994         wpabuf_free(p2p_ie);
5995
5996         return ret;
5997 }
5998
5999
6000 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
6001                           const u8 *dst, const u8 *bssid,
6002                           const u8 *ie, size_t ie_len, int ssi_signal)
6003 {
6004         if (wpa_s->global->p2p_disabled)
6005                 return 0;
6006         if (wpa_s->global->p2p == NULL)
6007                 return 0;
6008
6009         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
6010                                  ie, ie_len)) {
6011         case P2P_PREQ_NOT_P2P:
6012                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
6013                                  ssi_signal);
6014                 /* fall through */
6015         case P2P_PREQ_MALFORMED:
6016         case P2P_PREQ_NOT_LISTEN:
6017         case P2P_PREQ_NOT_PROCESSED:
6018         default: /* make gcc happy */
6019                 return 0;
6020         case P2P_PREQ_PROCESSED:
6021                 return 1;
6022         }
6023 }
6024
6025
6026 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
6027                         const u8 *sa, const u8 *bssid,
6028                         u8 category, const u8 *data, size_t len, int freq)
6029 {
6030         if (wpa_s->global->p2p_disabled)
6031                 return;
6032         if (wpa_s->global->p2p == NULL)
6033                 return;
6034
6035         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
6036                       freq);
6037 }
6038
6039
6040 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
6041 {
6042         if (wpa_s->global->p2p_disabled)
6043                 return;
6044         if (wpa_s->global->p2p == NULL)
6045                 return;
6046
6047         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
6048 }
6049
6050
6051 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
6052 {
6053         p2p_group_deinit(wpa_s->p2p_group);
6054         wpa_s->p2p_group = NULL;
6055
6056         wpa_s->ap_configured_cb = NULL;
6057         wpa_s->ap_configured_cb_ctx = NULL;
6058         wpa_s->ap_configured_cb_data = NULL;
6059         wpa_s->connect_without_scan = NULL;
6060 }
6061
6062
6063 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
6064 {
6065         wpa_s->p2p_long_listen = 0;
6066
6067         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6068                 return -1;
6069
6070         return p2p_reject(wpa_s->global->p2p, addr);
6071 }
6072
6073
6074 /* Invite to reinvoke a persistent group */
6075 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6076                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
6077                     int ht40, int vht, int pref_freq)
6078 {
6079         enum p2p_invite_role role;
6080         u8 *bssid = NULL;
6081         int force_freq = 0;
6082         int res;
6083         int no_pref_freq_given = pref_freq == 0;
6084
6085         wpa_s->global->p2p_invite_group = NULL;
6086         if (peer_addr)
6087                 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
6088         else
6089                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
6090
6091         wpa_s->p2p_persistent_go_freq = freq;
6092         wpa_s->p2p_go_ht40 = !!ht40;
6093         if (ssid->mode == WPAS_MODE_P2P_GO) {
6094                 role = P2P_INVITE_ROLE_GO;
6095                 if (peer_addr == NULL) {
6096                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
6097                                    "address in invitation command");
6098                         return -1;
6099                 }
6100                 if (wpas_p2p_create_iface(wpa_s)) {
6101                         if (wpas_p2p_add_group_interface(wpa_s,
6102                                                          WPA_IF_P2P_GO) < 0) {
6103                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
6104                                            "allocate a new interface for the "
6105                                            "group");
6106                                 return -1;
6107                         }
6108                         bssid = wpa_s->pending_interface_addr;
6109                 } else
6110                         bssid = wpa_s->own_addr;
6111         } else {
6112                 role = P2P_INVITE_ROLE_CLIENT;
6113                 peer_addr = ssid->bssid;
6114         }
6115         wpa_s->pending_invite_ssid_id = ssid->id;
6116
6117         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6118                                    role == P2P_INVITE_ROLE_GO);
6119         if (res)
6120                 return res;
6121
6122         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6123                 return -1;
6124
6125         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
6126             no_pref_freq_given && pref_freq > 0 &&
6127             wpa_s->num_multichan_concurrent > 1 &&
6128             wpas_p2p_num_unused_channels(wpa_s) > 0) {
6129                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
6130                            pref_freq);
6131                 pref_freq = 0;
6132         }
6133
6134         /*
6135          * Stop any find/listen operations before invitation and possibly
6136          * connection establishment.
6137          */
6138         wpas_p2p_stop_find_oper(wpa_s);
6139
6140         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6141                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
6142                           1, pref_freq, -1);
6143 }
6144
6145
6146 /* Invite to join an active group */
6147 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
6148                           const u8 *peer_addr, const u8 *go_dev_addr)
6149 {
6150         struct wpa_global *global = wpa_s->global;
6151         enum p2p_invite_role role;
6152         u8 *bssid = NULL;
6153         struct wpa_ssid *ssid;
6154         int persistent;
6155         int freq = 0, force_freq = 0, pref_freq = 0;
6156         int res;
6157
6158         wpa_s->p2p_persistent_go_freq = 0;
6159         wpa_s->p2p_go_ht40 = 0;
6160         wpa_s->p2p_go_vht = 0;
6161
6162         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6163                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
6164                         break;
6165         }
6166         if (wpa_s == NULL) {
6167                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
6168                 return -1;
6169         }
6170
6171         ssid = wpa_s->current_ssid;
6172         if (ssid == NULL) {
6173                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
6174                            "invitation");
6175                 return -1;
6176         }
6177
6178         wpa_s->global->p2p_invite_group = wpa_s;
6179         persistent = ssid->p2p_persistent_group &&
6180                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
6181                                         ssid->ssid, ssid->ssid_len);
6182
6183         if (ssid->mode == WPAS_MODE_P2P_GO) {
6184                 role = P2P_INVITE_ROLE_ACTIVE_GO;
6185                 bssid = wpa_s->own_addr;
6186                 if (go_dev_addr == NULL)
6187                         go_dev_addr = wpa_s->global->p2p_dev_addr;
6188                 freq = ssid->frequency;
6189         } else {
6190                 role = P2P_INVITE_ROLE_CLIENT;
6191                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
6192                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
6193                                    "invite to current group");
6194                         return -1;
6195                 }
6196                 bssid = wpa_s->bssid;
6197                 if (go_dev_addr == NULL &&
6198                     !is_zero_ether_addr(wpa_s->go_dev_addr))
6199                         go_dev_addr = wpa_s->go_dev_addr;
6200                 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6201                         (int) wpa_s->assoc_freq;
6202         }
6203         wpa_s->parent->pending_invite_ssid_id = -1;
6204
6205         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6206                 return -1;
6207
6208         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6209                                    role == P2P_INVITE_ROLE_ACTIVE_GO);
6210         if (res)
6211                 return res;
6212         wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
6213
6214         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6215                           ssid->ssid, ssid->ssid_len, force_freq,
6216                           go_dev_addr, persistent, pref_freq, -1);
6217 }
6218
6219
6220 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
6221 {
6222         struct wpa_ssid *ssid = wpa_s->current_ssid;
6223         u8 go_dev_addr[ETH_ALEN];
6224         int network_id = -1;
6225         int persistent;
6226         int freq;
6227         u8 ip[3 * 4];
6228         char ip_addr[100];
6229
6230         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
6231                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6232                                      wpa_s->parent, NULL);
6233         }
6234
6235         if (!wpa_s->show_group_started || !ssid)
6236                 return;
6237
6238         wpa_s->show_group_started = 0;
6239
6240         os_memset(go_dev_addr, 0, ETH_ALEN);
6241         if (ssid->bssid_set)
6242                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
6243         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6244                                                ssid->ssid_len);
6245         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
6246
6247         if (wpa_s->global->p2p_group_formation == wpa_s)
6248                 wpa_s->global->p2p_group_formation = NULL;
6249
6250         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6251                 (int) wpa_s->assoc_freq;
6252
6253         ip_addr[0] = '\0';
6254         if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
6255                 int res;
6256
6257                 res = os_snprintf(ip_addr, sizeof(ip_addr),
6258                                   " ip_addr=%u.%u.%u.%u "
6259                                   "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
6260                                   ip[0], ip[1], ip[2], ip[3],
6261                                   ip[4], ip[5], ip[6], ip[7],
6262                                   ip[8], ip[9], ip[10], ip[11]);
6263                 if (os_snprintf_error(sizeof(ip_addr), res))
6264                         ip_addr[0] = '\0';
6265         }
6266
6267         wpas_p2p_group_started(wpa_s, 0, ssid, freq,
6268                                ssid->passphrase == NULL && ssid->psk_set ?
6269                                ssid->psk : NULL,
6270                                ssid->passphrase, go_dev_addr, persistent,
6271                                ip_addr);
6272
6273         if (persistent)
6274                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
6275                                                              ssid, go_dev_addr);
6276         if (network_id < 0)
6277                 network_id = ssid->id;
6278         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
6279 }
6280
6281
6282 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
6283                           u32 interval1, u32 duration2, u32 interval2)
6284 {
6285         int ret;
6286
6287         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6288                 return -1;
6289
6290         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
6291             wpa_s->current_ssid == NULL ||
6292             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
6293                 return -1;
6294
6295         ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
6296                                wpa_s->own_addr, wpa_s->assoc_freq,
6297                                duration1, interval1, duration2, interval2);
6298         if (ret == 0)
6299                 wpa_s->waiting_presence_resp = 1;
6300
6301         return ret;
6302 }
6303
6304
6305 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
6306                         unsigned int interval)
6307 {
6308         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6309                 return -1;
6310
6311         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
6312 }
6313
6314
6315 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
6316 {
6317         if (wpa_s->current_ssid == NULL) {
6318                 /*
6319                  * current_ssid can be cleared when P2P client interface gets
6320                  * disconnected, so assume this interface was used as P2P
6321                  * client.
6322                  */
6323                 return 1;
6324         }
6325         return wpa_s->current_ssid->p2p_group &&
6326                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
6327 }
6328
6329
6330 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
6331 {
6332         struct wpa_supplicant *wpa_s = eloop_ctx;
6333
6334         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
6335                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
6336                            "disabled");
6337                 return;
6338         }
6339
6340         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
6341                    "group");
6342         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
6343 }
6344
6345
6346 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
6347 {
6348         int timeout;
6349
6350         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6351                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6352
6353         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6354                 return;
6355
6356         timeout = wpa_s->conf->p2p_group_idle;
6357         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
6358             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
6359             timeout = P2P_MAX_CLIENT_IDLE;
6360
6361         if (timeout == 0)
6362                 return;
6363
6364         if (timeout < 0) {
6365                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
6366                         timeout = 0; /* special client mode no-timeout */
6367                 else
6368                         return;
6369         }
6370
6371         if (wpa_s->p2p_in_provisioning) {
6372                 /*
6373                  * Use the normal group formation timeout during the
6374                  * provisioning phase to avoid terminating this process too
6375                  * early due to group idle timeout.
6376                  */
6377                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6378                            "during provisioning");
6379                 return;
6380         }
6381
6382         if (wpa_s->show_group_started) {
6383                 /*
6384                  * Use the normal group formation timeout between the end of
6385                  * the provisioning phase and completion of 4-way handshake to
6386                  * avoid terminating this process too early due to group idle
6387                  * timeout.
6388                  */
6389                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6390                            "while waiting for initial 4-way handshake to "
6391                            "complete");
6392                 return;
6393         }
6394
6395         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
6396                    timeout);
6397         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
6398                                wpa_s, NULL);
6399 }
6400
6401
6402 /* Returns 1 if the interface was removed */
6403 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6404                           u16 reason_code, const u8 *ie, size_t ie_len,
6405                           int locally_generated)
6406 {
6407         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6408                 return 0;
6409
6410         if (!locally_generated)
6411                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6412                                  ie_len);
6413
6414         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
6415             wpa_s->current_ssid &&
6416             wpa_s->current_ssid->p2p_group &&
6417             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
6418                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
6419                            "session is ending");
6420                 if (wpas_p2p_group_delete(wpa_s,
6421                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
6422                     > 0)
6423                         return 1;
6424         }
6425
6426         return 0;
6427 }
6428
6429
6430 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6431                              u16 reason_code, const u8 *ie, size_t ie_len,
6432                              int locally_generated)
6433 {
6434         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6435                 return;
6436
6437         if (!locally_generated)
6438                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6439                                    ie_len);
6440 }
6441
6442
6443 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
6444 {
6445         struct p2p_data *p2p = wpa_s->global->p2p;
6446
6447         if (p2p == NULL)
6448                 return;
6449
6450         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
6451                 return;
6452
6453         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
6454                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
6455
6456         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
6457                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
6458
6459         if (wpa_s->wps &&
6460             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
6461                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
6462
6463         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
6464                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
6465
6466         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
6467                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
6468                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
6469                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
6470                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
6471         }
6472
6473         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
6474                 p2p_set_sec_dev_types(p2p,
6475                                       (void *) wpa_s->conf->sec_device_type,
6476                                       wpa_s->conf->num_sec_device_types);
6477
6478         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
6479                 int i;
6480                 p2p_remove_wps_vendor_extensions(p2p);
6481                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
6482                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
6483                                 continue;
6484                         p2p_add_wps_vendor_extension(
6485                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
6486                 }
6487         }
6488
6489         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
6490             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
6491                 char country[3];
6492                 country[0] = wpa_s->conf->country[0];
6493                 country[1] = wpa_s->conf->country[1];
6494                 country[2] = 0x04;
6495                 p2p_set_country(p2p, country);
6496         }
6497
6498         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
6499                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
6500                                      wpa_s->conf->p2p_ssid_postfix ?
6501                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
6502                                      0);
6503         }
6504
6505         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
6506                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
6507
6508         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
6509                 u8 reg_class, channel;
6510                 int ret;
6511                 unsigned int r;
6512                 u8 channel_forced;
6513
6514                 if (wpa_s->conf->p2p_listen_reg_class &&
6515                     wpa_s->conf->p2p_listen_channel) {
6516                         reg_class = wpa_s->conf->p2p_listen_reg_class;
6517                         channel = wpa_s->conf->p2p_listen_channel;
6518                         channel_forced = 1;
6519                 } else {
6520                         reg_class = 81;
6521                         /*
6522                          * Pick one of the social channels randomly as the
6523                          * listen channel.
6524                          */
6525                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
6526                                 channel = 1;
6527                         else
6528                                 channel = 1 + (r % 3) * 5;
6529                         channel_forced = 0;
6530                 }
6531                 ret = p2p_set_listen_channel(p2p, reg_class, channel,
6532                                              channel_forced);
6533                 if (ret)
6534                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
6535                                    "failed: %d", ret);
6536         }
6537         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
6538                 u8 op_reg_class, op_channel, cfg_op_channel;
6539                 int ret = 0;
6540                 unsigned int r;
6541                 if (wpa_s->conf->p2p_oper_reg_class &&
6542                     wpa_s->conf->p2p_oper_channel) {
6543                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
6544                         op_channel = wpa_s->conf->p2p_oper_channel;
6545                         cfg_op_channel = 1;
6546                 } else {
6547                         op_reg_class = 81;
6548                         /*
6549                          * Use random operation channel from (1, 6, 11)
6550                          *if no other preference is indicated.
6551                          */
6552                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
6553                                 op_channel = 1;
6554                         else
6555                                 op_channel = 1 + (r % 3) * 5;
6556                         cfg_op_channel = 0;
6557                 }
6558                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
6559                                            cfg_op_channel);
6560                 if (ret)
6561                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
6562                                    "failed: %d", ret);
6563         }
6564
6565         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
6566                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
6567                                       wpa_s->conf->p2p_pref_chan) < 0) {
6568                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
6569                                    "update failed");
6570                 }
6571
6572                 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
6573                         wpa_printf(MSG_ERROR, "P2P: No GO channel list "
6574                                    "update failed");
6575                 }
6576         }
6577
6578         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN)
6579                 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len);
6580 }
6581
6582
6583 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
6584                      int duration)
6585 {
6586         if (!wpa_s->ap_iface)
6587                 return -1;
6588         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
6589                                    duration);
6590 }
6591
6592
6593 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
6594 {
6595         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6596                 return -1;
6597
6598         wpa_s->global->cross_connection = enabled;
6599         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
6600
6601         if (!enabled) {
6602                 struct wpa_supplicant *iface;
6603
6604                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
6605                 {
6606                         if (iface->cross_connect_enabled == 0)
6607                                 continue;
6608
6609                         iface->cross_connect_enabled = 0;
6610                         iface->cross_connect_in_use = 0;
6611                         wpa_msg_global(iface->parent, MSG_INFO,
6612                                        P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6613                                        iface->ifname,
6614                                        iface->cross_connect_uplink);
6615                 }
6616         }
6617
6618         return 0;
6619 }
6620
6621
6622 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
6623 {
6624         struct wpa_supplicant *iface;
6625
6626         if (!uplink->global->cross_connection)
6627                 return;
6628
6629         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
6630                 if (!iface->cross_connect_enabled)
6631                         continue;
6632                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
6633                     0)
6634                         continue;
6635                 if (iface->ap_iface == NULL)
6636                         continue;
6637                 if (iface->cross_connect_in_use)
6638                         continue;
6639
6640                 iface->cross_connect_in_use = 1;
6641                 wpa_msg_global(iface->parent, MSG_INFO,
6642                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
6643                                iface->ifname, iface->cross_connect_uplink);
6644         }
6645 }
6646
6647
6648 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
6649 {
6650         struct wpa_supplicant *iface;
6651
6652         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
6653                 if (!iface->cross_connect_enabled)
6654                         continue;
6655                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
6656                     0)
6657                         continue;
6658                 if (!iface->cross_connect_in_use)
6659                         continue;
6660
6661                 wpa_msg_global(iface->parent, MSG_INFO,
6662                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6663                                iface->ifname, iface->cross_connect_uplink);
6664                 iface->cross_connect_in_use = 0;
6665         }
6666 }
6667
6668
6669 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
6670 {
6671         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
6672             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
6673             wpa_s->cross_connect_disallowed)
6674                 wpas_p2p_disable_cross_connect(wpa_s);
6675         else
6676                 wpas_p2p_enable_cross_connect(wpa_s);
6677         if (!wpa_s->ap_iface &&
6678             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6679                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6680 }
6681
6682
6683 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
6684 {
6685         wpas_p2p_disable_cross_connect(wpa_s);
6686         if (!wpa_s->ap_iface &&
6687             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
6688                                          wpa_s, NULL))
6689                 wpas_p2p_set_group_idle_timeout(wpa_s);
6690 }
6691
6692
6693 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
6694 {
6695         struct wpa_supplicant *iface;
6696
6697         if (!wpa_s->global->cross_connection)
6698                 return;
6699
6700         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
6701                 if (iface == wpa_s)
6702                         continue;
6703                 if (iface->drv_flags &
6704                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
6705                         continue;
6706                 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) &&
6707                     iface != wpa_s->parent)
6708                         continue;
6709
6710                 wpa_s->cross_connect_enabled = 1;
6711                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
6712                            sizeof(wpa_s->cross_connect_uplink));
6713                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
6714                            "%s to %s whenever uplink is available",
6715                            wpa_s->ifname, wpa_s->cross_connect_uplink);
6716
6717                 if (iface->ap_iface || iface->current_ssid == NULL ||
6718                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
6719                     iface->cross_connect_disallowed ||
6720                     iface->wpa_state != WPA_COMPLETED)
6721                         break;
6722
6723                 wpa_s->cross_connect_in_use = 1;
6724                 wpa_msg_global(wpa_s->parent, MSG_INFO,
6725                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
6726                                wpa_s->ifname, wpa_s->cross_connect_uplink);
6727                 break;
6728         }
6729 }
6730
6731
6732 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
6733 {
6734         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
6735             !wpa_s->p2p_in_provisioning)
6736                 return 0; /* not P2P client operation */
6737
6738         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
6739                    "session overlap");
6740         if (wpa_s != wpa_s->parent)
6741                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
6742         wpas_p2p_group_formation_failed(wpa_s);
6743         return 1;
6744 }
6745
6746
6747 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
6748 {
6749         struct wpa_supplicant *wpa_s = eloop_ctx;
6750         wpas_p2p_notif_pbc_overlap(wpa_s);
6751 }
6752
6753
6754 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
6755 {
6756         struct p2p_channels chan, cli_chan;
6757         struct wpa_supplicant *ifs;
6758
6759         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
6760                 return;
6761
6762         os_memset(&chan, 0, sizeof(chan));
6763         os_memset(&cli_chan, 0, sizeof(cli_chan));
6764         if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
6765                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
6766                            "channel list");
6767                 return;
6768         }
6769
6770         p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
6771
6772         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
6773                 int freq;
6774                 if (!ifs->current_ssid ||
6775                     !ifs->current_ssid->p2p_group ||
6776                     (ifs->current_ssid->mode != WPAS_MODE_P2P_GO &&
6777                      ifs->current_ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION))
6778                                 continue;
6779                 freq = ifs->current_ssid->frequency;
6780                 if (freq_included(&chan, freq)) {
6781                         wpa_dbg(ifs, MSG_DEBUG,
6782                                 "P2P GO operating frequency %d MHz in valid range",
6783                                 freq);
6784                         continue;
6785                 }
6786
6787                 wpa_dbg(ifs, MSG_DEBUG,
6788                         "P2P GO operating in invalid frequency %d MHz", freq);
6789                 /* TODO: Consider using CSA or removing the group within
6790                  * wpa_supplicant */
6791                 wpa_msg(ifs, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
6792         }
6793 }
6794
6795
6796 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
6797                                      struct wpa_scan_results *scan_res)
6798 {
6799         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6800 }
6801
6802
6803 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
6804 {
6805         struct wpa_global *global = wpa_s->global;
6806         int found = 0;
6807         const u8 *peer;
6808
6809         if (global->p2p == NULL)
6810                 return -1;
6811
6812         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
6813
6814         if (wpa_s->pending_interface_name[0] &&
6815             !is_zero_ether_addr(wpa_s->pending_interface_addr))
6816                 found = 1;
6817
6818         peer = p2p_get_go_neg_peer(global->p2p);
6819         if (peer) {
6820                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
6821                            MACSTR, MAC2STR(peer));
6822                 p2p_unauthorize(global->p2p, peer);
6823                 found = 1;
6824         }
6825
6826         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
6827                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
6828                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
6829                 found = 1;
6830         }
6831
6832         if (wpa_s->pending_pd_before_join) {
6833                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
6834                 wpa_s->pending_pd_before_join = 0;
6835                 found = 1;
6836         }
6837
6838         wpas_p2p_stop_find(wpa_s);
6839
6840         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6841                 if (wpa_s == global->p2p_group_formation &&
6842                     (wpa_s->p2p_in_provisioning ||
6843                      wpa_s->parent->pending_interface_type ==
6844                      WPA_IF_P2P_CLIENT)) {
6845                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
6846                                    "formation found - cancelling",
6847                                    wpa_s->ifname);
6848                         found = 1;
6849                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6850                                              wpa_s->parent, NULL);
6851                         if (wpa_s->p2p_in_provisioning) {
6852                                 wpas_group_formation_completed(wpa_s, 0);
6853                                 break;
6854                         }
6855                         wpas_p2p_group_delete(wpa_s,
6856                                               P2P_GROUP_REMOVAL_REQUESTED);
6857                         break;
6858                 } else if (wpa_s->p2p_in_invitation) {
6859                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
6860                                    wpa_s->ifname);
6861                         found = 1;
6862                         wpas_p2p_group_formation_failed(wpa_s);
6863                 }
6864         }
6865
6866         if (!found) {
6867                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
6868                 return -1;
6869         }
6870
6871         return 0;
6872 }
6873
6874
6875 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
6876 {
6877         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6878                 return;
6879
6880         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
6881                    "being available anymore");
6882         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
6883 }
6884
6885
6886 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
6887                                    int freq_24, int freq_5, int freq_overall)
6888 {
6889         struct p2p_data *p2p = wpa_s->global->p2p;
6890         if (p2p == NULL)
6891                 return;
6892         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
6893 }
6894
6895
6896 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
6897 {
6898         u8 peer[ETH_ALEN];
6899         struct p2p_data *p2p = wpa_s->global->p2p;
6900
6901         if (p2p == NULL)
6902                 return -1;
6903
6904         if (hwaddr_aton(addr, peer))
6905                 return -1;
6906
6907         return p2p_unauthorize(p2p, peer);
6908 }
6909
6910
6911 /**
6912  * wpas_p2p_disconnect - Disconnect from a P2P Group
6913  * @wpa_s: Pointer to wpa_supplicant data
6914  * Returns: 0 on success, -1 on failure
6915  *
6916  * This can be used to disconnect from a group in which the local end is a P2P
6917  * Client or to end a P2P Group in case the local end is the Group Owner. If a
6918  * virtual network interface was created for this group, that interface will be
6919  * removed. Otherwise, only the configured P2P group network will be removed
6920  * from the interface.
6921  */
6922 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
6923 {
6924
6925         if (wpa_s == NULL)
6926                 return -1;
6927
6928         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
6929                 -1 : 0;
6930 }
6931
6932
6933 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
6934 {
6935         int ret;
6936
6937         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6938                 return 0;
6939
6940         ret = p2p_in_progress(wpa_s->global->p2p);
6941         if (ret == 0) {
6942                 /*
6943                  * Check whether there is an ongoing WPS provisioning step (or
6944                  * other parts of group formation) on another interface since
6945                  * p2p_in_progress() does not report this to avoid issues for
6946                  * scans during such provisioning step.
6947                  */
6948                 if (wpa_s->global->p2p_group_formation &&
6949                     wpa_s->global->p2p_group_formation != wpa_s) {
6950                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
6951                                 "in group formation",
6952                                 wpa_s->global->p2p_group_formation->ifname);
6953                         ret = 1;
6954                 }
6955         }
6956
6957         if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
6958                 struct os_reltime now;
6959                 os_get_reltime(&now);
6960                 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
6961                                        P2P_MAX_INITIAL_CONN_WAIT_GO)) {
6962                         /* Wait for the first client has expired */
6963                         wpa_s->global->p2p_go_wait_client.sec = 0;
6964                 } else {
6965                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
6966                         ret = 1;
6967                 }
6968         }
6969
6970         return ret;
6971 }
6972
6973
6974 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
6975                               struct wpa_ssid *ssid)
6976 {
6977         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
6978             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6979                                  wpa_s->parent, NULL) > 0) {
6980                 /**
6981                  * Remove the network by scheduling the group formation
6982                  * timeout to happen immediately. The teardown code
6983                  * needs to be scheduled to run asynch later so that we
6984                  * don't delete data from under ourselves unexpectedly.
6985                  * Calling wpas_p2p_group_formation_timeout directly
6986                  * causes a series of crashes in WPS failure scenarios.
6987                  */
6988                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
6989                            "P2P group network getting removed");
6990                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
6991                                        wpa_s->parent, NULL);
6992         }
6993 }
6994
6995
6996 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
6997                                           const u8 *addr, const u8 *ssid,
6998                                           size_t ssid_len)
6999 {
7000         struct wpa_ssid *s;
7001         size_t i;
7002
7003         for (s = wpa_s->conf->ssid; s; s = s->next) {
7004                 if (s->disabled != 2)
7005                         continue;
7006                 if (ssid &&
7007                     (ssid_len != s->ssid_len ||
7008                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
7009                         continue;
7010                 if (addr == NULL) {
7011                         if (s->mode == WPAS_MODE_P2P_GO)
7012                                 return s;
7013                         continue;
7014                 }
7015                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
7016                         return s; /* peer is GO in the persistent group */
7017                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
7018                         continue;
7019                 for (i = 0; i < s->num_p2p_clients; i++) {
7020                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
7021                                       addr, ETH_ALEN) == 0)
7022                                 return s; /* peer is P2P client in persistent
7023                                            * group */
7024                 }
7025         }
7026
7027         return NULL;
7028 }
7029
7030
7031 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
7032                                        const u8 *addr)
7033 {
7034         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7035                                  wpa_s->parent, NULL) > 0) {
7036                 /*
7037                  * This can happen if WPS provisioning step is not terminated
7038                  * cleanly (e.g., P2P Client does not send WSC_Done). Since the
7039                  * peer was able to connect, there is no need to time out group
7040                  * formation after this, though. In addition, this is used with
7041                  * the initial connection wait on the GO as a separate formation
7042                  * timeout and as such, expected to be hit after the initial WPS
7043                  * provisioning step.
7044                  */
7045                 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
7046
7047                 if (!wpa_s->p2p_go_group_formation_completed &&
7048                     !wpa_s->group_formation_reported) {
7049                         /*
7050                          * GO has not yet notified group formation success since
7051                          * the WPS step was not completed cleanly. Do that
7052                          * notification now since the P2P Client was able to
7053                          * connect and as such, must have received the
7054                          * credential from the WPS step.
7055                          */
7056                         if (wpa_s->global->p2p)
7057                                 p2p_wps_success_cb(wpa_s->global->p2p, addr);
7058                         wpas_group_formation_completed(wpa_s, 1);
7059                 }
7060         }
7061         if (!wpa_s->p2p_go_group_formation_completed) {
7062                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
7063                 wpa_s->p2p_go_group_formation_completed = 1;
7064                 wpa_s->global->p2p_group_formation = NULL;
7065                 wpa_s->p2p_in_provisioning = 0;
7066                 wpa_s->p2p_in_invitation = 0;
7067         }
7068         wpa_s->global->p2p_go_wait_client.sec = 0;
7069         if (addr == NULL)
7070                 return;
7071         wpas_p2p_add_persistent_group_client(wpa_s, addr);
7072 }
7073
7074
7075 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
7076                                        int group_added)
7077 {
7078         struct wpa_supplicant *group = wpa_s;
7079         int ret = 0;
7080
7081         if (wpa_s->global->p2p_group_formation)
7082                 group = wpa_s->global->p2p_group_formation;
7083         wpa_s = wpa_s->parent;
7084         offchannel_send_action_done(wpa_s);
7085         if (group_added)
7086                 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
7087         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
7088         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
7089                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
7090                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
7091                          wpa_s->p2p_persistent_id,
7092                          wpa_s->p2p_pd_before_go_neg,
7093                          wpa_s->p2p_go_ht40,
7094                          wpa_s->p2p_go_vht);
7095         return ret;
7096 }
7097
7098
7099 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
7100 {
7101         int res;
7102
7103         if (!wpa_s->p2p_fallback_to_go_neg ||
7104             wpa_s->p2p_in_provisioning <= 5)
7105                 return 0;
7106
7107         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
7108                 return 0; /* peer operating as a GO */
7109
7110         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
7111                 "fallback to GO Negotiation");
7112         wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG
7113                        "reason=GO-not-found");
7114         res = wpas_p2p_fallback_to_go_neg(wpa_s, 1);
7115
7116         return res == 1 ? 2 : 1;
7117 }
7118
7119
7120 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
7121 {
7122         struct wpa_supplicant *ifs;
7123
7124         if (wpa_s->wpa_state > WPA_SCANNING) {
7125                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
7126                         "concurrent operation",
7127                         wpa_s->conf->p2p_search_delay);
7128                 return wpa_s->conf->p2p_search_delay;
7129         }
7130
7131         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
7132                          radio_list) {
7133                 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
7134                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
7135                                 "delay due to concurrent operation on "
7136                                 "interface %s",
7137                                 wpa_s->conf->p2p_search_delay,
7138                                 ifs->ifname);
7139                         return wpa_s->conf->p2p_search_delay;
7140                 }
7141         }
7142
7143         return 0;
7144 }
7145
7146
7147 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
7148                                      struct wpa_ssid *s, const u8 *addr,
7149                                      int iface_addr)
7150 {
7151         struct psk_list_entry *psk, *tmp;
7152         int changed = 0;
7153
7154         dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
7155                               list) {
7156                 if ((iface_addr && !psk->p2p &&
7157                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
7158                     (!iface_addr && psk->p2p &&
7159                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
7160                         wpa_dbg(wpa_s, MSG_DEBUG,
7161                                 "P2P: Remove persistent group PSK list entry for "
7162                                 MACSTR " p2p=%u",
7163                                 MAC2STR(psk->addr), psk->p2p);
7164                         dl_list_del(&psk->list);
7165                         os_free(psk);
7166                         changed++;
7167                 }
7168         }
7169
7170         return changed;
7171 }
7172
7173
7174 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
7175                          const u8 *p2p_dev_addr,
7176                          const u8 *psk, size_t psk_len)
7177 {
7178         struct wpa_ssid *ssid = wpa_s->current_ssid;
7179         struct wpa_ssid *persistent;
7180         struct psk_list_entry *p, *last;
7181
7182         if (psk_len != sizeof(p->psk))
7183                 return;
7184
7185         if (p2p_dev_addr) {
7186                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
7187                         " p2p_dev_addr=" MACSTR,
7188                         MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
7189                 if (is_zero_ether_addr(p2p_dev_addr))
7190                         p2p_dev_addr = NULL;
7191         } else {
7192                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
7193                         MAC2STR(mac_addr));
7194         }
7195
7196         if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
7197                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
7198                 /* To be added to persistent group once created */
7199                 if (wpa_s->global->add_psk == NULL) {
7200                         wpa_s->global->add_psk = os_zalloc(sizeof(*p));
7201                         if (wpa_s->global->add_psk == NULL)
7202                                 return;
7203                 }
7204                 p = wpa_s->global->add_psk;
7205                 if (p2p_dev_addr) {
7206                         p->p2p = 1;
7207                         os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7208                 } else {
7209                         p->p2p = 0;
7210                         os_memcpy(p->addr, mac_addr, ETH_ALEN);
7211                 }
7212                 os_memcpy(p->psk, psk, psk_len);
7213                 return;
7214         }
7215
7216         if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
7217                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
7218                 return;
7219         }
7220
7221         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
7222                                              ssid->ssid_len);
7223         if (!persistent) {
7224                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
7225                 return;
7226         }
7227
7228         p = os_zalloc(sizeof(*p));
7229         if (p == NULL)
7230                 return;
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
7240         if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
7241             (last = dl_list_last(&persistent->psk_list,
7242                                  struct psk_list_entry, list))) {
7243                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
7244                         MACSTR " (p2p=%u) to make room for a new one",
7245                         MAC2STR(last->addr), last->p2p);
7246                 dl_list_del(&last->list);
7247                 os_free(last);
7248         }
7249
7250         wpas_p2p_remove_psk_entry(wpa_s->parent, persistent,
7251                                   p2p_dev_addr ? p2p_dev_addr : mac_addr,
7252                                   p2p_dev_addr == NULL);
7253         if (p2p_dev_addr) {
7254                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
7255                         MACSTR, MAC2STR(p2p_dev_addr));
7256         } else {
7257                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
7258                         MAC2STR(mac_addr));
7259         }
7260         dl_list_add(&persistent->psk_list, &p->list);
7261
7262         if (wpa_s->parent->conf->update_config &&
7263             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
7264                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
7265 }
7266
7267
7268 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
7269                                 struct wpa_ssid *s, const u8 *addr,
7270                                 int iface_addr)
7271 {
7272         int res;
7273
7274         res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
7275         if (res > 0 && wpa_s->conf->update_config &&
7276             wpa_config_write(wpa_s->confname, wpa_s->conf))
7277                 wpa_dbg(wpa_s, MSG_DEBUG,
7278                         "P2P: Failed to update configuration");
7279 }
7280
7281
7282 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
7283                                       const u8 *peer, int iface_addr)
7284 {
7285         struct hostapd_data *hapd;
7286         struct hostapd_wpa_psk *psk, *prev, *rem;
7287         struct sta_info *sta;
7288
7289         if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
7290             wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
7291                 return;
7292
7293         /* Remove per-station PSK entry */
7294         hapd = wpa_s->ap_iface->bss[0];
7295         prev = NULL;
7296         psk = hapd->conf->ssid.wpa_psk;
7297         while (psk) {
7298                 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
7299                     (!iface_addr &&
7300                      os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
7301                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
7302                                 MACSTR " iface_addr=%d",
7303                                 MAC2STR(peer), iface_addr);
7304                         if (prev)
7305                                 prev->next = psk->next;
7306                         else
7307                                 hapd->conf->ssid.wpa_psk = psk->next;
7308                         rem = psk;
7309                         psk = psk->next;
7310                         os_free(rem);
7311                 } else {
7312                         prev = psk;
7313                         psk = psk->next;
7314                 }
7315         }
7316
7317         /* Disconnect from group */
7318         if (iface_addr)
7319                 sta = ap_get_sta(hapd, peer);
7320         else
7321                 sta = ap_get_sta_p2p(hapd, peer);
7322         if (sta) {
7323                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
7324                         " (iface_addr=%d) from group",
7325                         MAC2STR(peer), iface_addr);
7326                 hostapd_drv_sta_deauth(hapd, sta->addr,
7327                                        WLAN_REASON_DEAUTH_LEAVING);
7328                 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
7329         }
7330 }
7331
7332
7333 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
7334                             int iface_addr)
7335 {
7336         struct wpa_ssid *s;
7337         struct wpa_supplicant *w;
7338         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
7339
7340         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
7341
7342         /* Remove from any persistent group */
7343         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
7344                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
7345                         continue;
7346                 if (!iface_addr)
7347                         wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0);
7348                 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr);
7349         }
7350
7351         /* Remove from any operating group */
7352         for (w = wpa_s->global->ifaces; w; w = w->next)
7353                 wpas_p2p_remove_client_go(w, peer, iface_addr);
7354 }
7355
7356
7357 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
7358 {
7359         struct wpa_supplicant *wpa_s = eloop_ctx;
7360         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
7361 }
7362
7363
7364 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
7365 {
7366         struct wpa_supplicant *wpa_s = eloop_ctx;
7367
7368         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
7369         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
7370 }
7371
7372
7373 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
7374                                         struct wpa_ssid *ssid)
7375 {
7376         struct wpa_supplicant *iface;
7377
7378         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7379                 if (!iface->current_ssid ||
7380                     iface->current_ssid->frequency == freq ||
7381                     (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
7382                      !iface->current_ssid->p2p_group))
7383                         continue;
7384
7385                 /* Remove the connection with least priority */
7386                 if (!wpas_is_p2p_prioritized(iface)) {
7387                         /* STA connection has priority over existing
7388                          * P2P connection, so remove the interface. */
7389                         wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
7390                         eloop_register_timeout(0, 0,
7391                                                wpas_p2p_group_freq_conflict,
7392                                                iface, NULL);
7393                         /* If connection in progress is P2P connection, do not
7394                          * proceed for the connection. */
7395                         if (wpa_s == iface)
7396                                 return -1;
7397                         else
7398                                 return 0;
7399                 } else {
7400                         /* P2P connection has priority, disable the STA network
7401                          */
7402                         wpa_supplicant_disable_network(wpa_s->global->ifaces,
7403                                                        ssid);
7404                         wpa_msg(wpa_s->global->ifaces, MSG_INFO,
7405                                 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
7406                         os_memset(wpa_s->global->ifaces->pending_bssid, 0,
7407                                   ETH_ALEN);
7408                         /* If P2P connection is in progress, continue
7409                          * connecting...*/
7410                         if (wpa_s == iface)
7411                                 return 0;
7412                         else
7413                                 return -1;
7414                 }
7415         }
7416
7417         return 0;
7418 }
7419
7420
7421 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
7422 {
7423         struct wpa_ssid *ssid = wpa_s->current_ssid;
7424
7425         if (ssid == NULL || !ssid->p2p_group)
7426                 return 0;
7427
7428         if (wpa_s->p2p_last_4way_hs_fail &&
7429             wpa_s->p2p_last_4way_hs_fail == ssid) {
7430                 u8 go_dev_addr[ETH_ALEN];
7431                 struct wpa_ssid *persistent;
7432
7433                 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
7434                                               ssid->ssid,
7435                                               ssid->ssid_len) <= 0) {
7436                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
7437                         goto disconnect;
7438                 }
7439
7440                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
7441                         MACSTR, MAC2STR(go_dev_addr));
7442                 persistent = wpas_p2p_get_persistent(wpa_s->parent, go_dev_addr,
7443                                                      ssid->ssid,
7444                                                      ssid->ssid_len);
7445                 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
7446                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
7447                         goto disconnect;
7448                 }
7449                 wpa_msg_global(wpa_s->parent, MSG_INFO,
7450                                P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
7451                                persistent->id);
7452         disconnect:
7453                 wpa_s->p2p_last_4way_hs_fail = NULL;
7454                 /*
7455                  * Remove the group from a timeout to avoid issues with caller
7456                  * continuing to use the interface if this is on a P2P group
7457                  * interface.
7458                  */
7459                 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
7460                                        wpa_s, NULL);
7461                 return 1;
7462         }
7463
7464         wpa_s->p2p_last_4way_hs_fail = ssid;
7465         return 0;
7466 }
7467
7468
7469 #ifdef CONFIG_WPS_NFC
7470
7471 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
7472                                              struct wpabuf *p2p)
7473 {
7474         struct wpabuf *ret;
7475         size_t wsc_len;
7476
7477         if (p2p == NULL) {
7478                 wpabuf_free(wsc);
7479                 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
7480                 return NULL;
7481         }
7482
7483         wsc_len = wsc ? wpabuf_len(wsc) : 0;
7484         ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
7485         if (ret == NULL) {
7486                 wpabuf_free(wsc);
7487                 wpabuf_free(p2p);
7488                 return NULL;
7489         }
7490
7491         wpabuf_put_be16(ret, wsc_len);
7492         if (wsc)
7493                 wpabuf_put_buf(ret, wsc);
7494         wpabuf_put_be16(ret, wpabuf_len(p2p));
7495         wpabuf_put_buf(ret, p2p);
7496
7497         wpabuf_free(wsc);
7498         wpabuf_free(p2p);
7499         wpa_hexdump_buf(MSG_DEBUG,
7500                         "P2P: Generated NFC connection handover message", ret);
7501
7502         if (ndef && ret) {
7503                 struct wpabuf *tmp;
7504                 tmp = ndef_build_p2p(ret);
7505                 wpabuf_free(ret);
7506                 if (tmp == NULL) {
7507                         wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
7508                         return NULL;
7509                 }
7510                 ret = tmp;
7511         }
7512
7513         return ret;
7514 }
7515
7516
7517 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
7518                              struct wpa_ssid **ssid, u8 *go_dev_addr)
7519 {
7520         struct wpa_supplicant *iface;
7521
7522         if (go_dev_addr)
7523                 os_memset(go_dev_addr, 0, ETH_ALEN);
7524         if (ssid)
7525                 *ssid = NULL;
7526         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7527                 if (iface->wpa_state < WPA_ASSOCIATING ||
7528                     iface->current_ssid == NULL || iface->assoc_freq == 0 ||
7529                     !iface->current_ssid->p2p_group ||
7530                     iface->current_ssid->mode != WPAS_MODE_INFRA)
7531                         continue;
7532                 if (ssid)
7533                         *ssid = iface->current_ssid;
7534                 if (go_dev_addr)
7535                         os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
7536                 return iface->assoc_freq;
7537         }
7538         return 0;
7539 }
7540
7541
7542 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
7543                                           int ndef)
7544 {
7545         struct wpabuf *wsc, *p2p;
7546         struct wpa_ssid *ssid;
7547         u8 go_dev_addr[ETH_ALEN];
7548         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
7549
7550         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
7551                 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
7552                 return NULL;
7553         }
7554
7555         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7556             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7557                            &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
7558                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
7559                 return NULL;
7560         }
7561
7562         if (cli_freq == 0) {
7563                 wsc = wps_build_nfc_handover_req_p2p(
7564                         wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
7565         } else
7566                 wsc = NULL;
7567         p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
7568                                          go_dev_addr, ssid ? ssid->ssid : NULL,
7569                                          ssid ? ssid->ssid_len : 0);
7570
7571         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7572 }
7573
7574
7575 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
7576                                           int ndef, int tag)
7577 {
7578         struct wpabuf *wsc, *p2p;
7579         struct wpa_ssid *ssid;
7580         u8 go_dev_addr[ETH_ALEN];
7581         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
7582
7583         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7584                 return NULL;
7585
7586         if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7587             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7588                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
7589                 return NULL;
7590
7591         if (cli_freq == 0) {
7592                 wsc = wps_build_nfc_handover_sel_p2p(
7593                         wpa_s->parent->wps,
7594                         tag ? wpa_s->conf->wps_nfc_dev_pw_id :
7595                         DEV_PW_NFC_CONNECTION_HANDOVER,
7596                         wpa_s->conf->wps_nfc_dh_pubkey,
7597                         tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
7598         } else
7599                 wsc = NULL;
7600         p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
7601                                          go_dev_addr, ssid ? ssid->ssid : NULL,
7602                                          ssid ? ssid->ssid_len : 0);
7603
7604         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7605 }
7606
7607
7608 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
7609                                    struct p2p_nfc_params *params)
7610 {
7611         wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
7612                    "connection handover (freq=%d)",
7613                    params->go_freq);
7614
7615         if (params->go_freq && params->go_ssid_len) {
7616                 wpa_s->p2p_wps_method = WPS_NFC;
7617                 wpa_s->pending_join_wps_method = WPS_NFC;
7618                 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
7619                 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
7620                           ETH_ALEN);
7621                 return wpas_p2p_join_start(wpa_s, params->go_freq,
7622                                            params->go_ssid,
7623                                            params->go_ssid_len);
7624         }
7625
7626         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7627                                 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
7628                                 params->go_freq, -1, 0, 1, 1);
7629 }
7630
7631
7632 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
7633                                   struct p2p_nfc_params *params, int tag)
7634 {
7635         int res, persistent;
7636         struct wpa_ssid *ssid;
7637
7638         wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
7639                    "connection handover");
7640         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7641                 ssid = wpa_s->current_ssid;
7642                 if (ssid == NULL)
7643                         continue;
7644                 if (ssid->mode != WPAS_MODE_P2P_GO)
7645                         continue;
7646                 if (wpa_s->ap_iface == NULL)
7647                         continue;
7648                 break;
7649         }
7650         if (wpa_s == NULL) {
7651                 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
7652                 return -1;
7653         }
7654
7655         if (wpa_s->parent->p2p_oob_dev_pw_id !=
7656             DEV_PW_NFC_CONNECTION_HANDOVER &&
7657             !wpa_s->parent->p2p_oob_dev_pw) {
7658                 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
7659                 return -1;
7660         }
7661         res = wpas_ap_wps_add_nfc_pw(
7662                 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
7663                 wpa_s->parent->p2p_oob_dev_pw,
7664                 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
7665                 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
7666         if (res)
7667                 return res;
7668
7669         if (!tag) {
7670                 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
7671                 return 0;
7672         }
7673
7674         if (!params->peer ||
7675             !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
7676                 return 0;
7677
7678         wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
7679                    " to join", MAC2STR(params->peer->p2p_device_addr));
7680
7681         wpa_s->global->p2p_invite_group = wpa_s;
7682         persistent = ssid->p2p_persistent_group &&
7683                 wpas_p2p_get_persistent(wpa_s->parent,
7684                                         params->peer->p2p_device_addr,
7685                                         ssid->ssid, ssid->ssid_len);
7686         wpa_s->parent->pending_invite_ssid_id = -1;
7687
7688         return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
7689                           P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
7690                           ssid->ssid, ssid->ssid_len, ssid->frequency,
7691                           wpa_s->global->p2p_dev_addr, persistent, 0,
7692                           wpa_s->parent->p2p_oob_dev_pw_id);
7693 }
7694
7695
7696 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
7697                                     struct p2p_nfc_params *params,
7698                                     int forced_freq)
7699 {
7700         wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
7701                    "connection handover");
7702         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7703                                 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
7704                                 forced_freq, -1, 0, 1, 1);
7705 }
7706
7707
7708 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
7709                                     struct p2p_nfc_params *params,
7710                                     int forced_freq)
7711 {
7712         int res;
7713
7714         wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
7715                    "connection handover");
7716         res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7717                                WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
7718                                forced_freq, -1, 0, 1, 1);
7719         if (res)
7720                 return res;
7721
7722         res = wpas_p2p_listen(wpa_s, 60);
7723         if (res) {
7724                 p2p_unauthorize(wpa_s->global->p2p,
7725                                 params->peer->p2p_device_addr);
7726         }
7727
7728         return res;
7729 }
7730
7731
7732 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
7733                                             const struct wpabuf *data,
7734                                             int sel, int tag, int forced_freq)
7735 {
7736         const u8 *pos, *end;
7737         u16 len, id;
7738         struct p2p_nfc_params params;
7739         int res;
7740
7741         os_memset(&params, 0, sizeof(params));
7742         params.sel = sel;
7743
7744         wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
7745
7746         pos = wpabuf_head(data);
7747         end = pos + wpabuf_len(data);
7748
7749         if (end - pos < 2) {
7750                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
7751                            "attributes");
7752                 return -1;
7753         }
7754         len = WPA_GET_BE16(pos);
7755         pos += 2;
7756         if (len > end - pos) {
7757                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
7758                            "attributes");
7759                 return -1;
7760         }
7761         params.wsc_attr = pos;
7762         params.wsc_len = len;
7763         pos += len;
7764
7765         if (end - pos < 2) {
7766                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
7767                            "attributes");
7768                 return -1;
7769         }
7770         len = WPA_GET_BE16(pos);
7771         pos += 2;
7772         if (len > end - pos) {
7773                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
7774                            "attributes");
7775                 return -1;
7776         }
7777         params.p2p_attr = pos;
7778         params.p2p_len = len;
7779         pos += len;
7780
7781         wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
7782                     params.wsc_attr, params.wsc_len);
7783         wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
7784                     params.p2p_attr, params.p2p_len);
7785         if (pos < end) {
7786                 wpa_hexdump(MSG_DEBUG,
7787                             "P2P: Ignored extra data after P2P attributes",
7788                             pos, end - pos);
7789         }
7790
7791         res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
7792         if (res)
7793                 return res;
7794
7795         if (params.next_step == NO_ACTION)
7796                 return 0;
7797
7798         if (params.next_step == BOTH_GO) {
7799                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
7800                         MAC2STR(params.peer->p2p_device_addr));
7801                 return 0;
7802         }
7803
7804         if (params.next_step == PEER_CLIENT) {
7805                 if (!is_zero_ether_addr(params.go_dev_addr)) {
7806                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
7807                                 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
7808                                 " ssid=\"%s\"",
7809                                 MAC2STR(params.peer->p2p_device_addr),
7810                                 params.go_freq,
7811                                 MAC2STR(params.go_dev_addr),
7812                                 wpa_ssid_txt(params.go_ssid,
7813                                              params.go_ssid_len));
7814                 } else {
7815                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
7816                                 "peer=" MACSTR " freq=%d",
7817                                 MAC2STR(params.peer->p2p_device_addr),
7818                                 params.go_freq);
7819                 }
7820                 return 0;
7821         }
7822
7823         if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
7824                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
7825                         MACSTR, MAC2STR(params.peer->p2p_device_addr));
7826                 return 0;
7827         }
7828
7829         wpabuf_free(wpa_s->p2p_oob_dev_pw);
7830         wpa_s->p2p_oob_dev_pw = NULL;
7831
7832         if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
7833                 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
7834                            "received");
7835                 return -1;
7836         }
7837
7838         id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
7839         wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
7840         wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
7841                     params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
7842         os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
7843                   params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
7844         wpa_s->p2p_peer_oob_pk_hash_known = 1;
7845
7846         if (tag) {
7847                 if (id < 0x10) {
7848                         wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
7849                                    "peer OOB Device Password Id %u", id);
7850                         return -1;
7851                 }
7852                 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
7853                            "Device Password Id %u", id);
7854                 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
7855                                 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
7856                                 params.oob_dev_pw_len -
7857                                 WPS_OOB_PUBKEY_HASH_LEN - 2);
7858                 wpa_s->p2p_oob_dev_pw_id = id;
7859                 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
7860                         params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
7861                         params.oob_dev_pw_len -
7862                         WPS_OOB_PUBKEY_HASH_LEN - 2);
7863                 if (wpa_s->p2p_oob_dev_pw == NULL)
7864                         return -1;
7865
7866                 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7867                     wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7868                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
7869                         return -1;
7870         } else {
7871                 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
7872                            "without Device Password");
7873                 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
7874         }
7875
7876         switch (params.next_step) {
7877         case NO_ACTION:
7878         case BOTH_GO:
7879         case PEER_CLIENT:
7880                 /* already covered above */
7881                 return 0;
7882         case JOIN_GROUP:
7883                 return wpas_p2p_nfc_join_group(wpa_s, &params);
7884         case AUTH_JOIN:
7885                 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
7886         case INIT_GO_NEG:
7887                 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
7888         case RESP_GO_NEG:
7889                 /* TODO: use own OOB Dev Pw */
7890                 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
7891         }
7892
7893         return -1;
7894 }
7895
7896
7897 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
7898                              const struct wpabuf *data, int forced_freq)
7899 {
7900         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7901                 return -1;
7902
7903         return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
7904 }
7905
7906
7907 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
7908                                  const struct wpabuf *req,
7909                                  const struct wpabuf *sel, int forced_freq)
7910 {
7911         struct wpabuf *tmp;
7912         int ret;
7913
7914         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7915                 return -1;
7916
7917         wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
7918
7919         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
7920                           wpabuf_head(req), wpabuf_len(req));
7921         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
7922                           wpabuf_head(sel), wpabuf_len(sel));
7923         if (forced_freq)
7924                 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
7925         tmp = ndef_parse_p2p(init ? sel : req);
7926         if (tmp == NULL) {
7927                 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
7928                 return -1;
7929         }
7930
7931         ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
7932                                                forced_freq);
7933         wpabuf_free(tmp);
7934
7935         return ret;
7936 }
7937
7938
7939 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
7940 {
7941         const u8 *if_addr;
7942         int go_intent = wpa_s->conf->p2p_go_intent;
7943         struct wpa_supplicant *iface;
7944
7945         if (wpa_s->global->p2p == NULL)
7946                 return -1;
7947
7948         if (!enabled) {
7949                 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
7950                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7951                 {
7952                         if (!iface->ap_iface)
7953                                 continue;
7954                         hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
7955                 }
7956                 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
7957                                                  0, NULL);
7958                 if (wpa_s->p2p_nfc_tag_enabled)
7959                         wpas_p2p_remove_pending_group_interface(wpa_s);
7960                 wpa_s->p2p_nfc_tag_enabled = 0;
7961                 return 0;
7962         }
7963
7964         if (wpa_s->global->p2p_disabled)
7965                 return -1;
7966
7967         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
7968             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
7969             wpa_s->conf->wps_nfc_dev_pw == NULL ||
7970             wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
7971                 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
7972                            "to allow static handover cases");
7973                 return -1;
7974         }
7975
7976         wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
7977
7978         wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
7979         wpabuf_free(wpa_s->p2p_oob_dev_pw);
7980         wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
7981         if (wpa_s->p2p_oob_dev_pw == NULL)
7982                 return -1;
7983         wpa_s->p2p_peer_oob_pk_hash_known = 0;
7984
7985         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
7986             wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
7987                 /*
7988                  * P2P Group Interface present and the command came on group
7989                  * interface, so enable the token for the current interface.
7990                  */
7991                 wpa_s->create_p2p_iface = 0;
7992         } else {
7993                 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
7994         }
7995
7996         if (wpa_s->create_p2p_iface) {
7997                 enum wpa_driver_if_type iftype;
7998                 /* Prepare to add a new interface for the group */
7999                 iftype = WPA_IF_P2P_GROUP;
8000                 if (go_intent == 15)
8001                         iftype = WPA_IF_P2P_GO;
8002                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
8003                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
8004                                    "interface for the group");
8005                         return -1;
8006                 }
8007
8008                 if_addr = wpa_s->pending_interface_addr;
8009         } else
8010                 if_addr = wpa_s->own_addr;
8011
8012         wpa_s->p2p_nfc_tag_enabled = enabled;
8013
8014         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8015                 struct hostapd_data *hapd;
8016                 if (iface->ap_iface == NULL)
8017                         continue;
8018                 hapd = iface->ap_iface->bss[0];
8019                 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
8020                 hapd->conf->wps_nfc_dh_pubkey =
8021                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
8022                 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
8023                 hapd->conf->wps_nfc_dh_privkey =
8024                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
8025                 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
8026                 hapd->conf->wps_nfc_dev_pw =
8027                         wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8028                 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8029
8030                 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
8031                         wpa_dbg(iface, MSG_DEBUG,
8032                                 "P2P: Failed to enable NFC Tag for GO");
8033                 }
8034         }
8035         p2p_set_authorized_oob_dev_pw_id(
8036                 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
8037                 if_addr);
8038
8039         return 0;
8040 }
8041
8042 #endif /* CONFIG_WPS_NFC */
8043
8044
8045 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
8046                                              struct wpa_used_freq_data *freqs,
8047                                              unsigned int num)
8048 {
8049         u8 curr_chan, cand, chan;
8050         unsigned int i;
8051
8052         curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
8053         for (i = 0, cand = 0; i < num; i++) {
8054                 ieee80211_freq_to_chan(freqs[i].freq, &chan);
8055                 if (curr_chan == chan) {
8056                         cand = 0;
8057                         break;
8058                 }
8059
8060                 if (chan == 1 || chan == 6 || chan == 11)
8061                         cand = chan;
8062         }
8063
8064         if (cand) {
8065                 wpa_dbg(wpa_s, MSG_DEBUG,
8066                         "P2P: Update Listen channel to %u based on operating channel",
8067                         cand);
8068                 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
8069         }
8070 }
8071
8072
8073 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
8074 {
8075         struct wpa_used_freq_data *freqs;
8076         unsigned int num = wpa_s->num_multichan_concurrent;
8077
8078         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8079                 return;
8080
8081         /*
8082          * If possible, optimize the Listen channel to be a channel that is
8083          * already used by one of the other interfaces.
8084          */
8085         if (!wpa_s->conf->p2p_optimize_listen_chan)
8086                 return;
8087
8088         if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
8089                 return;
8090
8091         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
8092         if (!freqs)
8093                 return;
8094
8095         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
8096
8097         wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
8098         os_free(freqs);
8099 }
8100
8101
8102 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
8103 {
8104         if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
8105                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
8106                         "the management interface is being removed");
8107                 wpas_p2p_deinit_global(wpa_s->global);
8108         }
8109 }
8110
8111
8112 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
8113 {
8114         if (wpa_s->ap_iface->bss)
8115                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
8116         wpas_p2p_group_deinit(wpa_s);
8117 }