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 /**
  51  * Defines time interval in seconds when a GO needs to evacuate a frequency that
  52  * it is currently using, but is no longer valid for P2P use cases.
  53  */
  54 #define P2P_GO_FREQ_CHANGE_TIME 5
  55
  56 /**
  57  * Defines CSA parameters which are used when GO evacuates the no longer valid
  58  * channel (and if the driver supports channel switch).
  59  */
  60 #define P2P_GO_CSA_COUNT 7
  61 #define P2P_GO_CSA_BLOCK_TX 0
  62
  63 #ifndef P2P_MAX_CLIENT_IDLE
  64 /*
  65  * How many seconds to try to reconnect to the GO when connection in P2P client
  66  * role has been lost.
  67  */
  68 #define P2P_MAX_CLIENT_IDLE 10
  69 #endif /* P2P_MAX_CLIENT_IDLE */
  70
  71 #ifndef P2P_MAX_INITIAL_CONN_WAIT
  72 /*
  73  * How many seconds to wait for initial 4-way handshake to get completed after
  74  * WPS provisioning step or after the re-invocation of a persistent group on a
  75  * P2P Client.
  76  */
  77 #define P2P_MAX_INITIAL_CONN_WAIT 10
  78 #endif /* P2P_MAX_INITIAL_CONN_WAIT */
  79
  80 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO
  81 /*
  82  * How many seconds to wait for initial 4-way handshake to get completed after
  83  * WPS provisioning step on the GO. This controls the extra time the P2P
  84  * operation is considered to be in progress (e.g., to delay other scans) after
  85  * WPS provisioning has been completed on the GO during group formation.
  86  */
  87 #define P2P_MAX_INITIAL_CONN_WAIT_GO 10
  88 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO */
  89
  90 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE
  91 /*
  92  * How many seconds to wait for initial 4-way handshake to get completed after
  93  * re-invocation of a persistent group on the GO when the client is expected
  94  * to connect automatically (no user interaction).
  95  */
  96 #define P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 15
  97 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE */
  98
  99 #define P2P_MGMT_DEVICE_PREFIX          "p2p-dev-"
 100
 101 /*
 102  * How many seconds to wait to re-attempt to move GOs, in case previous attempt
 103  * was not possible.
 104  */
 105 #define P2P_RECONSIDER_GO_MOVE_DELAY 30
 106
 107 enum p2p_group_removal_reason {
 108         P2P_GROUP_REMOVAL_UNKNOWN,
 109         P2P_GROUP_REMOVAL_SILENT,
 110         P2P_GROUP_REMOVAL_FORMATION_FAILED,
 111         P2P_GROUP_REMOVAL_REQUESTED,
 112         P2P_GROUP_REMOVAL_IDLE_TIMEOUT,
 113         P2P_GROUP_REMOVAL_UNAVAILABLE,
 114         P2P_GROUP_REMOVAL_GO_ENDING_SESSION,
 115         P2P_GROUP_REMOVAL_PSK_FAILURE,
 116         P2P_GROUP_REMOVAL_FREQ_CONFLICT,
 117         P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL
 118 };
 119
 120
 121 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
 122 static struct wpa_supplicant *
 123 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
 124                          int go);
 125 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
 126                                const u8 *ssid, size_t ssid_len);
 127 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
 128                                 int *force_freq, int *pref_freq, int go,
 129                                 unsigned int *pref_freq_list,
 130                                 unsigned int *num_pref_freq);
 131 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
 132                                    const u8 *ssid, size_t ssid_len);
 133 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
 134 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
 135                          const u8 *dev_addr, enum p2p_wps_method wps_method,
 136                          int auto_join, int freq,
 137                          const u8 *ssid, size_t ssid_len);
 138 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
 139 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
 140 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
 141 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
 142 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
 143                                              void *timeout_ctx);
 144 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx);
 145 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
 146                                        int group_added);
 147 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s);
 148 static void wpas_stop_listen(void *ctx);
 149 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx);
 150 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s);
 151 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
 152                                         enum wpa_driver_if_type type);
 153 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
 154                                             int already_deleted);
 155 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
 156                                              struct wpa_used_freq_data *freqs,
 157                                              unsigned int num);
 158 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx);
 159 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq);
 160 static void
 161 wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
 162                              struct wpa_used_freq_data *freqs, unsigned int num,
 163                              enum wpas_p2p_channel_update_trig trig);
 164 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx);
 165
 166
 167 /*
 168  * Get the number of concurrent channels that the HW can operate, but that are
 169  * currently not in use by any of the wpa_supplicant interfaces.
 170  */
 171 static int wpas_p2p_num_unused_channels(struct wpa_supplicant *wpa_s)
 172 {
 173         int *freqs;
 174         int num, unused;
 175
 176         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
 177         if (!freqs)
 178                 return -1;
 179
 180         num = get_shared_radio_freqs(wpa_s, freqs,
 181                                      wpa_s->num_multichan_concurrent);
 182         os_free(freqs);
 183
 184         unused = wpa_s->num_multichan_concurrent - num;
 185         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: num_unused_channels: %d", unused);
 186         return unused;
 187 }
 188
 189
 190 /*
 191  * Get the frequencies that are currently in use by one or more of the virtual
 192  * interfaces, and that are also valid for P2P operation.
 193  */
 194 static unsigned int
 195 wpas_p2p_valid_oper_freqs(struct wpa_supplicant *wpa_s,
 196                           struct wpa_used_freq_data *p2p_freqs,
 197                           unsigned int len)
 198 {
 199         struct wpa_used_freq_data *freqs;
 200         unsigned int num, i, j;
 201
 202         freqs = os_calloc(wpa_s->num_multichan_concurrent,
 203                           sizeof(struct wpa_used_freq_data));
 204         if (!freqs)
 205                 return 0;
 206
 207         num = get_shared_radio_freqs_data(wpa_s, freqs,
 208                                           wpa_s->num_multichan_concurrent);
 209
 210         os_memset(p2p_freqs, 0, sizeof(struct wpa_used_freq_data) * len);
 211
 212         for (i = 0, j = 0; i < num && j < len; i++) {
 213                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
 214                         p2p_freqs[j++] = freqs[i];
 215         }
 216
 217         os_free(freqs);
 218
 219         dump_freq_data(wpa_s, "valid for P2P", p2p_freqs, j);
 220
 221         return j;
 222 }
 223
 224
 225 static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s,
 226                                              int freq)
 227 {
 228         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 229                 return;
 230
 231         /* Use the wpa_s used to control the P2P Device operation */
 232         wpa_s = wpa_s->global->p2p_init_wpa_s;
 233
 234         if (wpa_s->conf->p2p_ignore_shared_freq &&
 235             freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
 236             wpas_p2p_num_unused_channels(wpa_s) > 0) {
 237                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz due to p2p_ignore_shared_freq=1 configuration",
 238                            freq);
 239                 freq = 0;
 240         }
 241         p2p_set_own_freq_preference(wpa_s->global->p2p, freq);
 242 }
 243
 244
 245 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
 246                                       struct wpa_scan_results *scan_res)
 247 {
 248         size_t i;
 249
 250         if (wpa_s->p2p_scan_work) {
 251                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
 252                 wpa_s->p2p_scan_work = NULL;
 253                 radio_work_done(work);
 254         }
 255
 256         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 257                 return;
 258
 259         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
 260                    (int) scan_res->num);
 261
 262         for (i = 0; i < scan_res->num; i++) {
 263                 struct wpa_scan_res *bss = scan_res->res[i];
 264                 struct os_reltime time_tmp_age, entry_ts;
 265                 const u8 *ies;
 266                 size_t ies_len;
 267
 268                 time_tmp_age.sec = bss->age / 1000;
 269                 time_tmp_age.usec = (bss->age % 1000) * 1000;
 270                 os_reltime_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts);
 271
 272                 ies = (const u8 *) (bss + 1);
 273                 ies_len = bss->ie_len;
 274                 if (bss->beacon_ie_len > 0 &&
 275                     !wpa_scan_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
 276                     wpa_scan_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
 277                         wpa_printf(MSG_DEBUG, "P2P: Use P2P IE(s) from Beacon frame since no P2P IE(s) in Probe Response frames received for "
 278                                    MACSTR, MAC2STR(bss->bssid));
 279                         ies = ies + ies_len;
 280                         ies_len = bss->beacon_ie_len;
 281                 }
 282
 283
 284                 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
 285                                          bss->freq, &entry_ts, bss->level,
 286                                          ies, ies_len) > 0)
 287                         break;
 288         }
 289
 290         p2p_scan_res_handled(wpa_s->global->p2p);
 291 }
 292
 293
 294 static void wpas_p2p_trigger_scan_cb(struct wpa_radio_work *work, int deinit)
 295 {
 296         struct wpa_supplicant *wpa_s = work->wpa_s;
 297         struct wpa_driver_scan_params *params = work->ctx;
 298         int ret;
 299
 300         if (deinit) {
 301                 if (!work->started) {
 302                         wpa_scan_free_params(params);
 303                         return;
 304                 }
 305
 306                 wpa_s->p2p_scan_work = NULL;
 307                 return;
 308         }
 309
 310         ret = wpa_drv_scan(wpa_s, params);
 311         wpa_scan_free_params(params);
 312         work->ctx = NULL;
 313         if (ret) {
 314                 radio_work_done(work);
 315                 p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 316                 return;
 317         }
 318
 319         p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 320         os_get_reltime(&wpa_s->scan_trigger_time);
 321         wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 322         wpa_s->own_scan_requested = 1;
 323         wpa_s->p2p_scan_work = work;
 324 }
 325
 326
 327 static int wpas_p2p_search_social_channel(struct wpa_supplicant *wpa_s,
 328                                           int freq)
 329 {
 330         if (wpa_s->global->p2p_24ghz_social_channels &&
 331             (freq == 2412 || freq == 2437 || freq == 2462)) {
 332                 /*
 333                  * Search all social channels regardless of whether these have
 334                  * been disabled for P2P operating channel use to avoid missing
 335                  * peers.
 336                  */
 337                 return 1;
 338         }
 339         return p2p_supported_freq(wpa_s->global->p2p, freq);
 340 }
 341
 342
 343 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
 344                          unsigned int num_req_dev_types,
 345                          const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
 346 {
 347         struct wpa_supplicant *wpa_s = ctx;
 348         struct wpa_driver_scan_params *params = NULL;
 349         struct wpabuf *wps_ie, *ies;
 350         unsigned int num_channels = 0;
 351         int social_channels_freq[] = { 2412, 2437, 2462, 60480 };
 352         size_t ielen;
 353         u8 *n, i;
 354
 355         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 356                 return -1;
 357
 358         if (wpa_s->p2p_scan_work) {
 359                 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending");
 360                 return -1;
 361         }
 362
 363         params = os_zalloc(sizeof(*params));
 364         if (params == NULL)
 365                 return -1;
 366
 367         /* P2P Wildcard SSID */
 368         params->num_ssids = 1;
 369         n = os_malloc(P2P_WILDCARD_SSID_LEN);
 370         if (n == NULL)
 371                 goto fail;
 372         os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
 373         params->ssids[0].ssid = n;
 374         params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
 375
 376         wpa_s->wps->dev.p2p = 1;
 377         wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
 378                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
 379                                         num_req_dev_types, req_dev_types);
 380         if (wps_ie == NULL)
 381                 goto fail;
 382
 383         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
 384         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
 385         if (ies == NULL) {
 386                 wpabuf_free(wps_ie);
 387                 goto fail;
 388         }
 389         wpabuf_put_buf(ies, wps_ie);
 390         wpabuf_free(wps_ie);
 391
 392         p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);
 393
 394         params->p2p_probe = 1;
 395         n = os_malloc(wpabuf_len(ies));
 396         if (n == NULL) {
 397                 wpabuf_free(ies);
 398                 goto fail;
 399         }
 400         os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies));
 401         params->extra_ies = n;
 402         params->extra_ies_len = wpabuf_len(ies);
 403         wpabuf_free(ies);
 404
 405         switch (type) {
 406         case P2P_SCAN_SOCIAL:
 407                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 1,
 408                                           sizeof(int));
 409                 if (params->freqs == NULL)
 410                         goto fail;
 411                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 412                         if (wpas_p2p_search_social_channel(
 413                                     wpa_s, social_channels_freq[i]))
 414                                 params->freqs[num_channels++] =
 415                                         social_channels_freq[i];
 416                 }
 417                 params->freqs[num_channels++] = 0;
 418                 break;
 419         case P2P_SCAN_FULL:
 420                 break;
 421         case P2P_SCAN_SPECIFIC:
 422                 params->freqs = os_calloc(2, sizeof(int));
 423                 if (params->freqs == NULL)
 424                         goto fail;
 425                 params->freqs[0] = freq;
 426                 params->freqs[1] = 0;
 427                 break;
 428         case P2P_SCAN_SOCIAL_PLUS_ONE:
 429                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 2,
 430                                           sizeof(int));
 431                 if (params->freqs == NULL)
 432                         goto fail;
 433                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 434                         if (wpas_p2p_search_social_channel(
 435                                     wpa_s, social_channels_freq[i]))
 436                                 params->freqs[num_channels++] =
 437                                         social_channels_freq[i];
 438                 }
 439                 if (p2p_supported_freq(wpa_s->global->p2p, freq))
 440                         params->freqs[num_channels++] = freq;
 441                 params->freqs[num_channels++] = 0;
 442                 break;
 443         }
 444
 445         radio_remove_works(wpa_s, "p2p-scan", 0);
 446         if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb,
 447                            params) < 0)
 448                 goto fail;
 449         return 0;
 450
 451 fail:
 452         wpa_scan_free_params(params);
 453         return -1;
 454 }
 455
 456
 457 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 458 {
 459         switch (p2p_group_interface) {
 460         case P2P_GROUP_INTERFACE_PENDING:
 461                 return WPA_IF_P2P_GROUP;
 462         case P2P_GROUP_INTERFACE_GO:
 463                 return WPA_IF_P2P_GO;
 464         case P2P_GROUP_INTERFACE_CLIENT:
 465                 return WPA_IF_P2P_CLIENT;
 466         }
 467
 468         return WPA_IF_P2P_GROUP;
 469 }
 470
 471
 472 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 473                                                   const u8 *ssid,
 474                                                   size_t ssid_len, int *go)
 475 {
 476         struct wpa_ssid *s;
 477
 478         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 479                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 480                         if (s->disabled != 0 || !s->p2p_group ||
 481                             s->ssid_len != ssid_len ||
 482                             os_memcmp(ssid, s->ssid, ssid_len) != 0)
 483                                 continue;
 484                         if (s->mode == WPAS_MODE_P2P_GO &&
 485                             s != wpa_s->current_ssid)
 486                                 continue;
 487                         if (go)
 488                                 *go = s->mode == WPAS_MODE_P2P_GO;
 489                         return wpa_s;
 490                 }
 491         }
 492
 493         return NULL;
 494 }
 495
 496
 497 static void run_wpas_p2p_disconnect(void *eloop_ctx, void *timeout_ctx)
 498 {
 499         struct wpa_supplicant *wpa_s = eloop_ctx;
 500         wpa_printf(MSG_DEBUG,
 501                    "P2P: Complete previously requested removal of %s",
 502                    wpa_s->ifname);
 503         wpas_p2p_disconnect(wpa_s);
 504 }
 505
 506
 507 static int wpas_p2p_disconnect_safely(struct wpa_supplicant *wpa_s,
 508                                       struct wpa_supplicant *calling_wpa_s)
 509 {
 510         if (calling_wpa_s == wpa_s && wpa_s &&
 511             wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 512                 /*
 513                  * The calling wpa_s instance is going to be removed. Do that
 514                  * from an eloop callback to keep the instance available until
 515                  * the caller has returned. This my be needed, e.g., to provide
 516                  * control interface responses on the per-interface socket.
 517                  */
 518                 if (eloop_register_timeout(0, 0, run_wpas_p2p_disconnect,
 519                                            wpa_s, NULL) < 0)
 520                         return -1;
 521                 return 0;
 522         }
 523
 524         return wpas_p2p_disconnect(wpa_s);
 525 }
 526
 527
 528 /* Determine total number of clients in active groups where we are the GO */
 529 static unsigned int p2p_group_go_member_count(struct wpa_supplicant *wpa_s)
 530 {
 531         unsigned int count = 0;
 532         struct wpa_ssid *s;
 533
 534         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 535                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 536                         wpa_printf(MSG_DEBUG,
 537                                    "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d",
 538                                    wpa_s, s, s->disabled, s->p2p_group,
 539                                    s->mode);
 540                         if (!s->disabled && s->p2p_group &&
 541                             s->mode == WPAS_MODE_P2P_GO) {
 542                                 count += p2p_get_group_num_members(
 543                                         wpa_s->p2p_group);
 544                         }
 545                 }
 546         }
 547
 548         return count;
 549 }
 550
 551
 552 static unsigned int p2p_is_active_persistent_group(struct wpa_supplicant *wpa_s)
 553 {
 554         return !wpa_s->p2p_mgmt && wpa_s->current_ssid &&
 555                 !wpa_s->current_ssid->disabled &&
 556                 wpa_s->current_ssid->p2p_group &&
 557                 wpa_s->current_ssid->p2p_persistent_group;
 558 }
 559
 560
 561 static unsigned int p2p_is_active_persistent_go(struct wpa_supplicant *wpa_s)
 562 {
 563         return p2p_is_active_persistent_group(wpa_s) &&
 564                 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO;
 565 }
 566
 567
 568 /* Find an interface for a P2P group where we are the GO */
 569 static struct wpa_supplicant *
 570 wpas_p2p_get_go_group(struct wpa_supplicant *wpa_s)
 571 {
 572         struct wpa_supplicant *save = NULL;
 573
 574         if (!wpa_s)
 575                 return NULL;
 576
 577         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 578                 if (!p2p_is_active_persistent_go(wpa_s))
 579                         continue;
 580
 581                 /* Prefer a group with connected clients */
 582                 if (p2p_get_group_num_members(wpa_s->p2p_group))
 583                         return wpa_s;
 584                 save = wpa_s;
 585         }
 586
 587         /* No group with connected clients, so pick the one without (if any) */
 588         return save;
 589 }
 590
 591
 592 static unsigned int p2p_is_active_persistent_cli(struct wpa_supplicant *wpa_s)
 593 {
 594         return p2p_is_active_persistent_group(wpa_s) &&
 595                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
 596 }
 597
 598
 599 /* Find an interface for a P2P group where we are the P2P Client */
 600 static struct wpa_supplicant *
 601 wpas_p2p_get_cli_group(struct wpa_supplicant *wpa_s)
 602 {
 603         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 604                 if (p2p_is_active_persistent_cli(wpa_s))
 605                         return wpa_s;
 606         }
 607
 608         return NULL;
 609 }
 610
 611
 612 /* Find a persistent group where we are the GO */
 613 static struct wpa_ssid *
 614 wpas_p2p_get_persistent_go(struct wpa_supplicant *wpa_s)
 615 {
 616         struct wpa_ssid *s;
 617
 618         for (s = wpa_s->conf->ssid; s; s = s->next) {
 619                 if (s->disabled == 2 && s->mode == WPAS_MODE_P2P_GO)
 620                         return s;
 621         }
 622
 623         return NULL;
 624 }
 625
 626
 627 static u8 p2ps_group_capability(void *ctx, u8 incoming, u8 role,
 628                                 unsigned int *force_freq,
 629                                 unsigned int *pref_freq)
 630 {
 631         struct wpa_supplicant *wpa_s = ctx;
 632         struct wpa_ssid *s;
 633         u8 conncap = P2PS_SETUP_NONE;
 634         unsigned int owned_members = 0;
 635         struct wpa_supplicant *go_wpa_s, *cli_wpa_s;
 636         struct wpa_ssid *persistent_go;
 637         int p2p_no_group_iface;
 638         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
 639
 640         wpa_printf(MSG_DEBUG, "P2P: Conncap - in:%d role:%d", incoming, role);
 641
 642         if (force_freq)
 643                 *force_freq = 0;
 644         if (pref_freq)
 645                 *pref_freq = 0;
 646
 647         size = P2P_MAX_PREF_CHANNELS;
 648         if (force_freq && pref_freq &&
 649             !wpas_p2p_setup_freqs(wpa_s, 0, (int *) force_freq,
 650                                   (int *) pref_freq, 0, pref_freq_list, &size))
 651                 wpas_p2p_set_own_freq_preference(wpa_s,
 652                                                  *force_freq ? *force_freq :
 653                                                  *pref_freq);
 654
 655         /*
 656          * For non-concurrent capable devices:
 657          * If persistent_go, then no new.
 658          * If GO, then no client.
 659          * If client, then no GO.
 660          */
 661         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
 662         if (go_wpa_s)
 663                 owned_members = p2p_get_group_num_members(go_wpa_s->p2p_group);
 664         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
 665         p2p_no_group_iface = !wpas_p2p_create_iface(wpa_s);
 666         cli_wpa_s = wpas_p2p_get_cli_group(wpa_s);
 667
 668         wpa_printf(MSG_DEBUG,
 669                    "P2P: GO(iface)=%p members=%u CLI(iface)=%p persistent(ssid)=%p",
 670                    go_wpa_s, owned_members, cli_wpa_s, persistent_go);
 671
 672         /* If not concurrent, restrict our choices */
 673         if (p2p_no_group_iface) {
 674                 wpa_printf(MSG_DEBUG, "P2P: p2p_no_group_iface");
 675
 676                 if (cli_wpa_s)
 677                         return P2PS_SETUP_NONE;
 678
 679                 if (go_wpa_s) {
 680                         if (role == P2PS_SETUP_CLIENT ||
 681                             incoming == P2PS_SETUP_GROUP_OWNER ||
 682                             p2p_client_limit_reached(go_wpa_s->p2p_group))
 683                                 return P2PS_SETUP_NONE;
 684
 685                         return P2PS_SETUP_GROUP_OWNER;
 686                 }
 687
 688                 if (persistent_go) {
 689                         if (role == P2PS_SETUP_NONE || role == P2PS_SETUP_NEW) {
 690                                 if (!incoming)
 691                                         return P2PS_SETUP_GROUP_OWNER |
 692                                                 P2PS_SETUP_CLIENT;
 693                                 if (incoming == P2PS_SETUP_NEW) {
 694                                         u8 r;
 695
 696                                         if (os_get_random(&r, sizeof(r)) < 0 ||
 697                                             (r & 1))
 698                                                 return P2PS_SETUP_CLIENT;
 699                                         return P2PS_SETUP_GROUP_OWNER;
 700                                 }
 701                         }
 702                 }
 703         }
 704
 705         /* If a required role has been specified, handle it here */
 706         if (role && role != P2PS_SETUP_NEW) {
 707                 switch (incoming) {
 708                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 709                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 710                         /*
 711                          * Peer has an active GO, so if the role allows it and
 712                          * we do not have any active roles, become client.
 713                          */
 714                         if ((role & P2PS_SETUP_CLIENT) && !go_wpa_s &&
 715                             !cli_wpa_s)
 716                                 return P2PS_SETUP_CLIENT;
 717
 718                         /* fall through */
 719
 720                 case P2PS_SETUP_NONE:
 721                 case P2PS_SETUP_NEW:
 722                         conncap = role;
 723                         goto grp_owner;
 724
 725                 case P2PS_SETUP_GROUP_OWNER:
 726                         /*
 727                          * Must be a complimentary role - cannot be a client to
 728                          * more than one peer.
 729                          */
 730                         if (incoming == role || cli_wpa_s)
 731                                 return P2PS_SETUP_NONE;
 732
 733                         return P2PS_SETUP_CLIENT;
 734
 735                 case P2PS_SETUP_CLIENT:
 736                         /* Must be a complimentary role */
 737                         if (incoming != role) {
 738                                 conncap = P2PS_SETUP_GROUP_OWNER;
 739                                 goto grp_owner;
 740                         }
 741
 742                 default:
 743                         return P2PS_SETUP_NONE;
 744                 }
 745         }
 746
 747         /*
 748          * For now, we only will support ownership of one group, and being a
 749          * client of one group. Therefore, if we have either an existing GO
 750          * group, or an existing client group, we will not do a new GO
 751          * negotiation, but rather try to re-use the existing groups.
 752          */
 753         switch (incoming) {
 754         case P2PS_SETUP_NONE:
 755         case P2PS_SETUP_NEW:
 756                 if (cli_wpa_s)
 757                         conncap = P2PS_SETUP_GROUP_OWNER;
 758                 else if (!owned_members)
 759                         conncap = P2PS_SETUP_NEW;
 760                 else if (incoming == P2PS_SETUP_NONE)
 761                         conncap = P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT;
 762                 else
 763                         conncap = P2PS_SETUP_CLIENT;
 764                 break;
 765
 766         case P2PS_SETUP_CLIENT:
 767                 conncap = P2PS_SETUP_GROUP_OWNER;
 768                 break;
 769
 770         case P2PS_SETUP_GROUP_OWNER:
 771                 if (!cli_wpa_s)
 772                         conncap = P2PS_SETUP_CLIENT;
 773                 break;
 774
 775         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 776         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 777                 /*
 778                  * Peer has an active GO, so if the role allows it and
 779                  * we do not have any active roles, become client.
 780                  */
 781                 if ((role & P2PS_SETUP_CLIENT) && !go_wpa_s && !cli_wpa_s)
 782                         return P2PS_SETUP_CLIENT;
 783
 784                 if (cli_wpa_s)
 785                         conncap = P2PS_SETUP_GROUP_OWNER;
 786                 else {
 787                         u8 r;
 788
 789                         if (os_get_random(&r, sizeof(r)) < 0 ||
 790                             (r & 1))
 791                                 conncap = P2PS_SETUP_CLIENT;
 792                         else
 793                                 conncap = P2PS_SETUP_GROUP_OWNER;
 794                 }
 795                 break;
 796
 797         default:
 798                 return P2PS_SETUP_NONE;
 799         }
 800
 801 grp_owner:
 802         if ((conncap & P2PS_SETUP_GROUP_OWNER) ||
 803             (!incoming && (conncap & P2PS_SETUP_NEW))) {
 804                 if (go_wpa_s && p2p_client_limit_reached(go_wpa_s->p2p_group))
 805                         conncap &= ~P2PS_SETUP_GROUP_OWNER;
 806
 807                 s = wpas_p2p_get_persistent_go(wpa_s);
 808                 if (!s && !go_wpa_s && p2p_no_group_iface) {
 809                         p2p_set_intended_addr(wpa_s->global->p2p,
 810                                               wpa_s->own_addr);
 811                 } else if (!s && !go_wpa_s) {
 812                         if (wpas_p2p_add_group_interface(wpa_s,
 813                                                          WPA_IF_P2P_GO) < 0) {
 814                                 wpa_printf(MSG_ERROR,
 815                                            "P2P: Failed to allocate a new interface for the group");
 816                                 return P2PS_SETUP_NONE;
 817                         }
 818                         wpa_s->global->pending_group_iface_for_p2ps = 1;
 819                         p2p_set_intended_addr(wpa_s->global->p2p,
 820                                               wpa_s->pending_interface_addr);
 821                 }
 822         }
 823
 824         return conncap;
 825 }
 826
 827
 828 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 829                                  enum p2p_group_removal_reason removal_reason)
 830 {
 831         struct wpa_ssid *ssid;
 832         char *gtype;
 833         const char *reason;
 834
 835         ssid = wpa_s->current_ssid;
 836         if (ssid == NULL) {
 837                 /*
 838                  * The current SSID was not known, but there may still be a
 839                  * pending P2P group interface waiting for provisioning or a
 840                  * P2P group that is trying to reconnect.
 841                  */
 842                 ssid = wpa_s->conf->ssid;
 843                 while (ssid) {
 844                         if (ssid->p2p_group && ssid->disabled != 2)
 845                                 break;
 846                         ssid = ssid->next;
 847                 }
 848                 if (ssid == NULL &&
 849                         wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
 850                 {
 851                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 852                                    "not found");
 853                         return -1;
 854                 }
 855         }
 856         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 857                 gtype = "GO";
 858         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 859                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 860                 wpa_s->reassociate = 0;
 861                 wpa_s->disconnected = 1;
 862                 gtype = "client";
 863         } else
 864                 gtype = "GO";
 865
 866         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 867                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 868
 869         if (os_strcmp(gtype, "client") == 0) {
 870                 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 871                 if (eloop_is_timeout_registered(wpas_p2p_psk_failure_removal,
 872                                                 wpa_s, NULL)) {
 873                         wpa_printf(MSG_DEBUG,
 874                                    "P2P: PSK failure removal was scheduled, so use PSK failure as reason for group removal");
 875                         removal_reason = P2P_GROUP_REMOVAL_PSK_FAILURE;
 876                         eloop_cancel_timeout(wpas_p2p_psk_failure_removal,
 877                                              wpa_s, NULL);
 878                 }
 879         }
 880
 881         if (wpa_s->cross_connect_in_use) {
 882                 wpa_s->cross_connect_in_use = 0;
 883                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 884                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 885                                wpa_s->ifname, wpa_s->cross_connect_uplink);
 886         }
 887         switch (removal_reason) {
 888         case P2P_GROUP_REMOVAL_REQUESTED:
 889                 reason = " reason=REQUESTED";
 890                 break;
 891         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 892                 reason = " reason=FORMATION_FAILED";
 893                 break;
 894         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 895                 reason = " reason=IDLE";
 896                 break;
 897         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 898                 reason = " reason=UNAVAILABLE";
 899                 break;
 900         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 901                 reason = " reason=GO_ENDING_SESSION";
 902                 break;
 903         case P2P_GROUP_REMOVAL_PSK_FAILURE:
 904                 reason = " reason=PSK_FAILURE";
 905                 break;
 906         case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
 907                 reason = " reason=FREQ_CONFLICT";
 908                 break;
 909         default:
 910                 reason = "";
 911                 break;
 912         }
 913         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 914                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 915                                P2P_EVENT_GROUP_REMOVED "%s %s%s",
 916                                wpa_s->ifname, gtype, reason);
 917         }
 918
 919         if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0)
 920                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout");
 921         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 922                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 923         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
 924                                  wpa_s->parent, NULL) > 0) {
 925                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
 926                            "timeout");
 927                 wpa_s->p2p_in_provisioning = 0;
 928                 wpas_p2p_group_formation_failed(wpa_s, 1);
 929         }
 930
 931         wpa_s->p2p_in_invitation = 0;
 932         eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
 933         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, wpa_s, NULL);
 934
 935         /*
 936          * Make sure wait for the first client does not remain active after the
 937          * group has been removed.
 938          */
 939         wpa_s->global->p2p_go_wait_client.sec = 0;
 940
 941         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 942                 struct wpa_global *global;
 943                 char *ifname;
 944                 enum wpa_driver_if_type type;
 945                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 946                         wpa_s->ifname);
 947                 global = wpa_s->global;
 948                 ifname = os_strdup(wpa_s->ifname);
 949                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 950                 eloop_cancel_timeout(run_wpas_p2p_disconnect, wpa_s, NULL);
 951                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 952                 wpa_s = global->ifaces;
 953                 if (wpa_s && ifname)
 954                         wpa_drv_if_remove(wpa_s, type, ifname);
 955                 os_free(ifname);
 956                 return 1;
 957         }
 958
 959         if (!wpa_s->p2p_go_group_formation_completed) {
 960                 wpa_s->global->p2p_group_formation = NULL;
 961                 wpa_s->p2p_in_provisioning = 0;
 962         }
 963
 964         wpa_s->show_group_started = 0;
 965         os_free(wpa_s->go_params);
 966         wpa_s->go_params = NULL;
 967
 968         os_free(wpa_s->p2p_group_common_freqs);
 969         wpa_s->p2p_group_common_freqs = NULL;
 970         wpa_s->p2p_group_common_freqs_num = 0;
 971
 972         wpa_s->waiting_presence_resp = 0;
 973
 974         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 975         if (ssid && (ssid->p2p_group ||
 976                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 977                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 978                 int id = ssid->id;
 979                 if (ssid == wpa_s->current_ssid) {
 980                         wpa_sm_set_config(wpa_s->wpa, NULL);
 981                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 982                         wpa_s->current_ssid = NULL;
 983                 }
 984                 /*
 985                  * Networks objects created during any P2P activities are not
 986                  * exposed out as they might/will confuse certain non-P2P aware
 987                  * applications since these network objects won't behave like
 988                  * regular ones.
 989                  *
 990                  * Likewise, we don't send out network removed signals for such
 991                  * network objects.
 992                  */
 993                 wpa_config_remove_network(wpa_s->conf, id);
 994                 wpa_supplicant_clear_status(wpa_s);
 995                 wpa_supplicant_cancel_sched_scan(wpa_s);
 996         } else {
 997                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
 998                            "found");
 999         }
1000         if (wpa_s->ap_iface)
1001                 wpa_supplicant_ap_deinit(wpa_s);
1002         else
1003                 wpa_drv_deinit_p2p_cli(wpa_s);
1004
1005         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
1006
1007         return 0;
1008 }
1009
1010
1011 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
1012                                      u8 *go_dev_addr,
1013                                      const u8 *ssid, size_t ssid_len)
1014 {
1015         struct wpa_bss *bss;
1016         const u8 *bssid;
1017         struct wpabuf *p2p;
1018         u8 group_capab;
1019         const u8 *addr;
1020
1021         if (wpa_s->go_params)
1022                 bssid = wpa_s->go_params->peer_interface_addr;
1023         else
1024                 bssid = wpa_s->bssid;
1025
1026         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
1027         if (bss == NULL && wpa_s->go_params &&
1028             !is_zero_ether_addr(wpa_s->go_params->peer_device_addr))
1029                 bss = wpa_bss_get_p2p_dev_addr(
1030                         wpa_s, wpa_s->go_params->peer_device_addr);
1031         if (bss == NULL) {
1032                 u8 iface_addr[ETH_ALEN];
1033                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
1034                                            iface_addr) == 0)
1035                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
1036         }
1037         if (bss == NULL) {
1038                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1039                            "group is persistent - BSS " MACSTR " not found",
1040                            MAC2STR(bssid));
1041                 return 0;
1042         }
1043
1044         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
1045         if (p2p == NULL)
1046                 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss,
1047                                                          P2P_IE_VENDOR_TYPE);
1048         if (p2p == NULL) {
1049                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1050                            "group is persistent - BSS " MACSTR
1051                            " did not include P2P IE", MAC2STR(bssid));
1052                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
1053                             (u8 *) (bss + 1), bss->ie_len);
1054                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
1055                             ((u8 *) bss + 1) + bss->ie_len,
1056                             bss->beacon_ie_len);
1057                 return 0;
1058         }
1059
1060         group_capab = p2p_get_group_capab(p2p);
1061         addr = p2p_get_go_dev_addr(p2p);
1062         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
1063                    "group_capab=0x%x", group_capab);
1064         if (addr) {
1065                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
1066                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
1067                            MAC2STR(addr));
1068         } else
1069                 os_memset(go_dev_addr, 0, ETH_ALEN);
1070         wpabuf_free(p2p);
1071
1072         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
1073                    "go_dev_addr=" MACSTR,
1074                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
1075
1076         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
1077 }
1078
1079
1080 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
1081                                            struct wpa_ssid *ssid,
1082                                            const u8 *go_dev_addr)
1083 {
1084         struct wpa_ssid *s;
1085         int changed = 0;
1086
1087         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
1088                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
1089         for (s = wpa_s->conf->ssid; s; s = s->next) {
1090                 if (s->disabled == 2 &&
1091                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
1092                     s->ssid_len == ssid->ssid_len &&
1093                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
1094                         break;
1095         }
1096
1097         if (s) {
1098                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
1099                            "entry");
1100                 if (ssid->passphrase && !s->passphrase)
1101                         changed = 1;
1102                 else if (ssid->passphrase && s->passphrase &&
1103                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
1104                         changed = 1;
1105         } else {
1106                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
1107                            "entry");
1108                 changed = 1;
1109                 s = wpa_config_add_network(wpa_s->conf);
1110                 if (s == NULL)
1111                         return -1;
1112
1113                 /*
1114                  * Instead of network_added we emit persistent_group_added
1115                  * notification. Also to keep the defense checks in
1116                  * persistent_group obj registration method, we set the
1117                  * relevant flags in s to designate it as a persistent group.
1118                  */
1119                 s->p2p_group = 1;
1120                 s->p2p_persistent_group = 1;
1121                 wpas_notify_persistent_group_added(wpa_s, s);
1122                 wpa_config_set_network_defaults(s);
1123         }
1124
1125         s->p2p_group = 1;
1126         s->p2p_persistent_group = 1;
1127         s->disabled = 2;
1128         s->bssid_set = 1;
1129         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
1130         s->mode = ssid->mode;
1131         s->auth_alg = WPA_AUTH_ALG_OPEN;
1132         s->key_mgmt = WPA_KEY_MGMT_PSK;
1133         s->proto = WPA_PROTO_RSN;
1134         s->pairwise_cipher = WPA_CIPHER_CCMP;
1135         s->export_keys = 1;
1136         if (ssid->passphrase) {
1137                 os_free(s->passphrase);
1138                 s->passphrase = os_strdup(ssid->passphrase);
1139         }
1140         if (ssid->psk_set) {
1141                 s->psk_set = 1;
1142                 os_memcpy(s->psk, ssid->psk, 32);
1143         }
1144         if (s->passphrase && !s->psk_set)
1145                 wpa_config_update_psk(s);
1146         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
1147                 os_free(s->ssid);
1148                 s->ssid = os_malloc(ssid->ssid_len);
1149         }
1150         if (s->ssid) {
1151                 s->ssid_len = ssid->ssid_len;
1152                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
1153         }
1154         if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
1155                 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
1156                 wpa_s->global->add_psk = NULL;
1157                 changed = 1;
1158         }
1159
1160         if (changed && wpa_s->conf->update_config &&
1161             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
1162                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1163         }
1164
1165         return s->id;
1166 }
1167
1168
1169 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
1170                                                  const u8 *addr)
1171 {
1172         struct wpa_ssid *ssid, *s;
1173         u8 *n;
1174         size_t i;
1175         int found = 0;
1176         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
1177
1178         ssid = wpa_s->current_ssid;
1179         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
1180             !ssid->p2p_persistent_group)
1181                 return;
1182
1183         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
1184                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
1185                         continue;
1186
1187                 if (s->ssid_len == ssid->ssid_len &&
1188                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
1189                         break;
1190         }
1191
1192         if (s == NULL)
1193                 return;
1194
1195         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
1196                 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, addr,
1197                               ETH_ALEN) != 0)
1198                         continue;
1199
1200                 if (i == s->num_p2p_clients - 1)
1201                         return; /* already the most recent entry */
1202
1203                 /* move the entry to mark it most recent */
1204                 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
1205                            s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
1206                            (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
1207                 os_memcpy(s->p2p_client_list +
1208                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN, addr,
1209                           ETH_ALEN);
1210                 os_memset(s->p2p_client_list +
1211                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1212                           0xff, ETH_ALEN);
1213                 found = 1;
1214                 break;
1215         }
1216
1217         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
1218                 n = os_realloc_array(s->p2p_client_list,
1219                                      s->num_p2p_clients + 1, 2 * ETH_ALEN);
1220                 if (n == NULL)
1221                         return;
1222                 os_memcpy(n + s->num_p2p_clients * 2 * ETH_ALEN, addr,
1223                           ETH_ALEN);
1224                 os_memset(n + s->num_p2p_clients * 2 * ETH_ALEN + ETH_ALEN,
1225                           0xff, ETH_ALEN);
1226                 s->p2p_client_list = n;
1227                 s->num_p2p_clients++;
1228         } else if (!found && s->p2p_client_list) {
1229                 /* Not enough room for an additional entry - drop the oldest
1230                  * entry */
1231                 os_memmove(s->p2p_client_list,
1232                            s->p2p_client_list + 2 * ETH_ALEN,
1233                            (s->num_p2p_clients - 1) * 2 * ETH_ALEN);
1234                 os_memcpy(s->p2p_client_list +
1235                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN,
1236                           addr, ETH_ALEN);
1237                 os_memset(s->p2p_client_list +
1238                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1239                           0xff, ETH_ALEN);
1240         }
1241
1242         if (p2p_wpa_s->conf->update_config &&
1243             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
1244                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1245 }
1246
1247
1248 static void wpas_p2p_group_started(struct wpa_supplicant *wpa_s,
1249                                    int go, struct wpa_ssid *ssid, int freq,
1250                                    const u8 *psk, const char *passphrase,
1251                                    const u8 *go_dev_addr, int persistent,
1252                                    const char *extra)
1253 {
1254         const char *ssid_txt;
1255         char psk_txt[65];
1256
1257         if (psk)
1258                 wpa_snprintf_hex(psk_txt, sizeof(psk_txt), psk, 32);
1259         else
1260                 psk_txt[0] = '\0';
1261
1262         if (ssid)
1263                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
1264         else
1265                 ssid_txt = "";
1266
1267         if (passphrase && passphrase[0] == '\0')
1268                 passphrase = NULL;
1269
1270         /*
1271          * Include PSK/passphrase only in the control interface message and
1272          * leave it out from the debug log entry.
1273          */
1274         wpa_msg_global_ctrl(wpa_s->parent, MSG_INFO,
1275                             P2P_EVENT_GROUP_STARTED
1276                             "%s %s ssid=\"%s\" freq=%d%s%s%s%s%s go_dev_addr="
1277                             MACSTR "%s%s",
1278                             wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1279                             psk ? " psk=" : "", psk_txt,
1280                             passphrase ? " passphrase=\"" : "",
1281                             passphrase ? passphrase : "",
1282                             passphrase ? "\"" : "",
1283                             MAC2STR(go_dev_addr),
1284                             persistent ? " [PERSISTENT]" : "", extra);
1285         wpa_printf(MSG_INFO, P2P_EVENT_GROUP_STARTED
1286                    "%s %s ssid=\"%s\" freq=%d go_dev_addr=" MACSTR "%s%s",
1287                    wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1288                    MAC2STR(go_dev_addr), persistent ? " [PERSISTENT]" : "",
1289                    extra);
1290 }
1291
1292
1293 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
1294                                            int success, int already_deleted)
1295 {
1296         struct wpa_ssid *ssid;
1297         int client;
1298         int persistent;
1299         u8 go_dev_addr[ETH_ALEN];
1300         int network_id = -1;
1301
1302         /*
1303          * This callback is likely called for the main interface. Update wpa_s
1304          * to use the group interface if a new interface was created for the
1305          * group.
1306          */
1307         if (wpa_s->global->p2p_group_formation)
1308                 wpa_s = wpa_s->global->p2p_group_formation;
1309         if (wpa_s->p2p_go_group_formation_completed) {
1310                 wpa_s->global->p2p_group_formation = NULL;
1311                 wpa_s->p2p_in_provisioning = 0;
1312         }
1313         wpa_s->p2p_in_invitation = 0;
1314         wpa_s->group_formation_reported = 1;
1315
1316         if (!success) {
1317                 wpa_msg_global(wpa_s->parent, MSG_INFO,
1318                                P2P_EVENT_GROUP_FORMATION_FAILURE);
1319                 wpas_notify_p2p_group_formation_failure(wpa_s, "");
1320                 if (already_deleted)
1321                         return;
1322                 wpas_p2p_group_delete(wpa_s,
1323                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
1324                 return;
1325         }
1326
1327         wpa_msg_global(wpa_s->parent, MSG_INFO,
1328                        P2P_EVENT_GROUP_FORMATION_SUCCESS);
1329
1330         ssid = wpa_s->current_ssid;
1331         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
1332                 ssid->mode = WPAS_MODE_P2P_GO;
1333                 p2p_group_notif_formation_done(wpa_s->p2p_group);
1334                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
1335         }
1336
1337         persistent = 0;
1338         if (ssid) {
1339                 client = ssid->mode == WPAS_MODE_INFRA;
1340                 if (ssid->mode == WPAS_MODE_P2P_GO) {
1341                         persistent = ssid->p2p_persistent_group;
1342                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
1343                                   ETH_ALEN);
1344                 } else
1345                         persistent = wpas_p2p_persistent_group(wpa_s,
1346                                                                go_dev_addr,
1347                                                                ssid->ssid,
1348                                                                ssid->ssid_len);
1349         } else {
1350                 client = wpa_s->p2p_group_interface ==
1351                         P2P_GROUP_INTERFACE_CLIENT;
1352                 os_memset(go_dev_addr, 0, ETH_ALEN);
1353         }
1354
1355         wpa_s->show_group_started = 0;
1356         if (client) {
1357                 /*
1358                  * Indicate event only after successfully completed 4-way
1359                  * handshake, i.e., when the interface is ready for data
1360                  * packets.
1361                  */
1362                 wpa_s->show_group_started = 1;
1363         } else {
1364                 wpas_p2p_group_started(wpa_s, 1, ssid,
1365                                        ssid ? ssid->frequency : 0,
1366                                        ssid && ssid->passphrase == NULL &&
1367                                        ssid->psk_set ? ssid->psk : NULL,
1368                                        ssid ? ssid->passphrase : NULL,
1369                                        go_dev_addr, persistent, "");
1370                 wpas_p2p_cross_connect_setup(wpa_s);
1371                 wpas_p2p_set_group_idle_timeout(wpa_s);
1372         }
1373
1374         if (persistent)
1375                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
1376                                                              ssid, go_dev_addr);
1377         else {
1378                 os_free(wpa_s->global->add_psk);
1379                 wpa_s->global->add_psk = NULL;
1380         }
1381         if (network_id < 0 && ssid)
1382                 network_id = ssid->id;
1383         if (!client) {
1384                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1385                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1386         }
1387 }
1388
1389
1390 struct send_action_work {
1391         unsigned int freq;
1392         u8 dst[ETH_ALEN];
1393         u8 src[ETH_ALEN];
1394         u8 bssid[ETH_ALEN];
1395         size_t len;
1396         unsigned int wait_time;
1397         u8 buf[0];
1398 };
1399
1400
1401 static void wpas_p2p_free_send_action_work(struct wpa_supplicant *wpa_s)
1402 {
1403         struct send_action_work *awork = wpa_s->p2p_send_action_work->ctx;
1404
1405         wpa_printf(MSG_DEBUG,
1406                    "P2P: Free Action frame radio work @%p (freq=%u dst="
1407                    MACSTR " src=" MACSTR " bssid=" MACSTR " wait_time=%u)",
1408                    wpa_s->p2p_send_action_work, awork->freq,
1409                    MAC2STR(awork->dst), MAC2STR(awork->src),
1410                    MAC2STR(awork->bssid), awork->wait_time);
1411         wpa_hexdump(MSG_DEBUG, "P2P: Freeing pending Action frame",
1412                     awork->buf, awork->len);
1413         os_free(awork);
1414         wpa_s->p2p_send_action_work->ctx = NULL;
1415         radio_work_done(wpa_s->p2p_send_action_work);
1416         wpa_s->p2p_send_action_work = NULL;
1417 }
1418
1419
1420 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
1421                                               void *timeout_ctx)
1422 {
1423         struct wpa_supplicant *wpa_s = eloop_ctx;
1424
1425         if (!wpa_s->p2p_send_action_work)
1426                 return;
1427
1428         wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
1429         wpas_p2p_free_send_action_work(wpa_s);
1430 }
1431
1432
1433 static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s)
1434 {
1435         if (wpa_s->p2p_send_action_work) {
1436                 struct send_action_work *awork;
1437
1438                 awork = wpa_s->p2p_send_action_work->ctx;
1439                 wpa_printf(MSG_DEBUG,
1440                            "P2P: Clear Action TX work @%p (wait_time=%u)",
1441                            wpa_s->p2p_send_action_work, awork->wait_time);
1442                 if (awork->wait_time == 0) {
1443                         wpas_p2p_free_send_action_work(wpa_s);
1444                 } else {
1445                         /*
1446                          * In theory, this should not be needed, but number of
1447                          * places in the P2P code is still using non-zero wait
1448                          * time for the last Action frame in the sequence and
1449                          * some of these do not call send_action_done().
1450                          */
1451                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1452                                              wpa_s, NULL);
1453                         eloop_register_timeout(
1454                                 0, awork->wait_time * 1000,
1455                                 wpas_p2p_send_action_work_timeout,
1456                                 wpa_s, NULL);
1457                 }
1458         }
1459 }
1460
1461
1462 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
1463                                            unsigned int freq,
1464                                            const u8 *dst, const u8 *src,
1465                                            const u8 *bssid,
1466                                            const u8 *data, size_t data_len,
1467                                            enum offchannel_send_action_result
1468                                            result)
1469 {
1470         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
1471
1472         wpas_p2p_action_tx_clear(wpa_s);
1473
1474         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
1475                 return;
1476
1477         switch (result) {
1478         case OFFCHANNEL_SEND_ACTION_SUCCESS:
1479                 res = P2P_SEND_ACTION_SUCCESS;
1480                 break;
1481         case OFFCHANNEL_SEND_ACTION_NO_ACK:
1482                 res = P2P_SEND_ACTION_NO_ACK;
1483                 break;
1484         case OFFCHANNEL_SEND_ACTION_FAILED:
1485                 res = P2P_SEND_ACTION_FAILED;
1486                 break;
1487         }
1488
1489         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
1490
1491         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
1492             wpa_s->pending_pd_before_join &&
1493             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
1494              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
1495             wpa_s->p2p_fallback_to_go_neg) {
1496                 wpa_s->pending_pd_before_join = 0;
1497                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
1498                         "during p2p_connect-auto");
1499                 wpa_msg_global(wpa_s->parent, MSG_INFO,
1500                                P2P_EVENT_FALLBACK_TO_GO_NEG
1501                                "reason=no-ACK-to-PD-Req");
1502                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
1503                 return;
1504         }
1505 }
1506
1507
1508 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
1509 {
1510         struct wpa_supplicant *wpa_s = work->wpa_s;
1511         struct send_action_work *awork = work->ctx;
1512
1513         if (deinit) {
1514                 if (work->started) {
1515                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1516                                              wpa_s, NULL);
1517                         wpa_s->p2p_send_action_work = NULL;
1518                         offchannel_send_action_done(wpa_s);
1519                 }
1520                 os_free(awork);
1521                 return;
1522         }
1523
1524         if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1525                                    awork->bssid, awork->buf, awork->len,
1526                                    awork->wait_time,
1527                                    wpas_p2p_send_action_tx_status, 1) < 0) {
1528                 os_free(awork);
1529                 radio_work_done(work);
1530                 return;
1531         }
1532         wpa_s->p2p_send_action_work = work;
1533 }
1534
1535
1536 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1537                                  unsigned int freq, const u8 *dst,
1538                                  const u8 *src, const u8 *bssid, const u8 *buf,
1539                                  size_t len, unsigned int wait_time)
1540 {
1541         struct send_action_work *awork;
1542
1543         if (wpa_s->p2p_send_action_work) {
1544                 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1545                 return -1;
1546         }
1547
1548         awork = os_zalloc(sizeof(*awork) + len);
1549         if (awork == NULL)
1550                 return -1;
1551
1552         awork->freq = freq;
1553         os_memcpy(awork->dst, dst, ETH_ALEN);
1554         os_memcpy(awork->src, src, ETH_ALEN);
1555         os_memcpy(awork->bssid, bssid, ETH_ALEN);
1556         awork->len = len;
1557         awork->wait_time = wait_time;
1558         os_memcpy(awork->buf, buf, len);
1559
1560         if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
1561                            wpas_send_action_cb, awork) < 0) {
1562                 os_free(awork);
1563                 return -1;
1564         }
1565
1566         return 0;
1567 }
1568
1569
1570 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1571                             const u8 *src, const u8 *bssid, const u8 *buf,
1572                             size_t len, unsigned int wait_time)
1573 {
1574         struct wpa_supplicant *wpa_s = ctx;
1575         int listen_freq = -1, send_freq = -1;
1576
1577         if (wpa_s->p2p_listen_work)
1578                 listen_freq = wpa_s->p2p_listen_work->freq;
1579         if (wpa_s->p2p_send_action_work)
1580                 send_freq = wpa_s->p2p_send_action_work->freq;
1581         if (listen_freq != (int) freq && send_freq != (int) freq) {
1582                 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)",
1583                            listen_freq, send_freq);
1584                 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1585                                              len, wait_time);
1586         }
1587
1588         wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1589         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1590                                       wait_time,
1591                                       wpas_p2p_send_action_tx_status, 1);
1592 }
1593
1594
1595 static void wpas_send_action_done(void *ctx)
1596 {
1597         struct wpa_supplicant *wpa_s = ctx;
1598
1599         if (wpa_s->p2p_send_action_work) {
1600                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1601                                      wpa_s, NULL);
1602                 os_free(wpa_s->p2p_send_action_work->ctx);
1603                 radio_work_done(wpa_s->p2p_send_action_work);
1604                 wpa_s->p2p_send_action_work = NULL;
1605         }
1606
1607         offchannel_send_action_done(wpa_s);
1608 }
1609
1610
1611 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1612                                     struct p2p_go_neg_results *params)
1613 {
1614         if (wpa_s->go_params == NULL) {
1615                 wpa_s->go_params = os_malloc(sizeof(*params));
1616                 if (wpa_s->go_params == NULL)
1617                         return -1;
1618         }
1619         os_memcpy(wpa_s->go_params, params, sizeof(*params));
1620         return 0;
1621 }
1622
1623
1624 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1625                                     struct p2p_go_neg_results *res)
1626 {
1627         wpa_s->group_formation_reported = 0;
1628         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
1629                    " dev_addr " MACSTR " wps_method %d",
1630                    MAC2STR(res->peer_interface_addr),
1631                    MAC2STR(res->peer_device_addr), res->wps_method);
1632         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1633                           res->ssid, res->ssid_len);
1634         wpa_supplicant_ap_deinit(wpa_s);
1635         wpas_copy_go_neg_results(wpa_s, res);
1636         if (res->wps_method == WPS_PBC) {
1637                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
1638 #ifdef CONFIG_WPS_NFC
1639         } else if (res->wps_method == WPS_NFC) {
1640                 wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
1641                                    res->peer_interface_addr,
1642                                    wpa_s->parent->p2p_oob_dev_pw,
1643                                    wpa_s->parent->p2p_oob_dev_pw_id, 1,
1644                                    wpa_s->parent->p2p_oob_dev_pw_id ==
1645                                    DEV_PW_NFC_CONNECTION_HANDOVER ?
1646                                    wpa_s->parent->p2p_peer_oob_pubkey_hash :
1647                                    NULL,
1648                                    NULL, 0, 0);
1649 #endif /* CONFIG_WPS_NFC */
1650         } else {
1651                 u16 dev_pw_id = DEV_PW_DEFAULT;
1652                 if (wpa_s->p2p_wps_method == WPS_P2PS)
1653                         dev_pw_id = DEV_PW_P2PS_DEFAULT;
1654                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1655                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1656                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1657                                    wpa_s->p2p_pin, 1, dev_pw_id);
1658         }
1659 }
1660
1661
1662 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1663                                   struct wpa_ssid *ssid)
1664 {
1665         struct wpa_ssid *persistent;
1666         struct psk_list_entry *psk;
1667         struct hostapd_data *hapd;
1668
1669         if (!wpa_s->ap_iface)
1670                 return;
1671
1672         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
1673                                              ssid->ssid_len);
1674         if (persistent == NULL)
1675                 return;
1676
1677         hapd = wpa_s->ap_iface->bss[0];
1678
1679         dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1680                          list) {
1681                 struct hostapd_wpa_psk *hpsk;
1682
1683                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1684                         MACSTR " psk=%d",
1685                         MAC2STR(psk->addr), psk->p2p);
1686                 hpsk = os_zalloc(sizeof(*hpsk));
1687                 if (hpsk == NULL)
1688                         break;
1689                 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1690                 if (psk->p2p)
1691                         os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1692                 else
1693                         os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1694                 hpsk->next = hapd->conf->ssid.wpa_psk;
1695                 hapd->conf->ssid.wpa_psk = hpsk;
1696         }
1697 }
1698
1699
1700 static void p2p_go_dump_common_freqs(struct wpa_supplicant *wpa_s)
1701 {
1702         unsigned int i;
1703
1704         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Common group frequencies (len=%u):",
1705                 wpa_s->p2p_group_common_freqs_num);
1706
1707         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++)
1708                 wpa_dbg(wpa_s, MSG_DEBUG, "freq[%u]: %d",
1709                         i, wpa_s->p2p_group_common_freqs[i]);
1710 }
1711
1712
1713 static void p2p_go_save_group_common_freqs(struct wpa_supplicant *wpa_s,
1714                                            struct p2p_go_neg_results *params)
1715 {
1716         unsigned int i, len = int_array_len(wpa_s->go_params->freq_list);
1717
1718         wpa_s->p2p_group_common_freqs_num = 0;
1719         os_free(wpa_s->p2p_group_common_freqs);
1720         wpa_s->p2p_group_common_freqs = os_calloc(len, sizeof(int));
1721         if (!wpa_s->p2p_group_common_freqs)
1722                 return;
1723
1724         for (i = 0; i < len; i++) {
1725                 if (!wpa_s->go_params->freq_list[i])
1726                         break;
1727                 wpa_s->p2p_group_common_freqs[i] =
1728                         wpa_s->go_params->freq_list[i];
1729         }
1730         wpa_s->p2p_group_common_freqs_num = i;
1731 }
1732
1733
1734 static void p2p_config_write(struct wpa_supplicant *wpa_s)
1735 {
1736 #ifndef CONFIG_NO_CONFIG_WRITE
1737         if (wpa_s->parent->conf->update_config &&
1738             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
1739                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1740 #endif /* CONFIG_NO_CONFIG_WRITE */
1741 }
1742
1743
1744 static void p2p_go_configured(void *ctx, void *data)
1745 {
1746         struct wpa_supplicant *wpa_s = ctx;
1747         struct p2p_go_neg_results *params = data;
1748         struct wpa_ssid *ssid;
1749         int network_id = -1;
1750
1751         p2p_go_save_group_common_freqs(wpa_s, params);
1752         p2p_go_dump_common_freqs(wpa_s);
1753
1754         ssid = wpa_s->current_ssid;
1755         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1756                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1757                 if (wpa_s->global->p2p_group_formation == wpa_s)
1758                         wpa_s->global->p2p_group_formation = NULL;
1759                 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency,
1760                                        params->passphrase[0] == '\0' ?
1761                                        params->psk : NULL,
1762                                        params->passphrase,
1763                                        wpa_s->global->p2p_dev_addr,
1764                                        params->persistent_group, "");
1765                 wpa_s->group_formation_reported = 1;
1766
1767                 if (wpa_s->parent->p2ps_method_config_any) {
1768                         if (is_zero_ether_addr(wpa_s->parent->p2ps_join_addr)) {
1769                                 wpa_dbg(wpa_s, MSG_DEBUG,
1770                                         "P2PS: Setting default PIN for ANY");
1771                                 wpa_supplicant_ap_wps_pin(wpa_s, NULL,
1772                                                           "12345670", NULL, 0,
1773                                                           0);
1774                         } else {
1775                                 wpa_dbg(wpa_s, MSG_DEBUG,
1776                                         "P2PS: Setting default PIN for " MACSTR,
1777                                         MAC2STR(wpa_s->parent->p2ps_join_addr));
1778                                 wpa_supplicant_ap_wps_pin(
1779                                         wpa_s, wpa_s->parent->p2ps_join_addr,
1780                                         "12345670", NULL, 0, 0);
1781                         }
1782                         wpa_s->parent->p2ps_method_config_any = 0;
1783                 }
1784
1785                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1786                 if (params->persistent_group) {
1787                         network_id = wpas_p2p_store_persistent_group(
1788                                 wpa_s->parent, ssid,
1789                                 wpa_s->global->p2p_dev_addr);
1790                         wpas_p2p_add_psk_list(wpa_s, ssid);
1791                 }
1792                 if (network_id < 0)
1793                         network_id = ssid->id;
1794                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1795                 wpas_p2p_cross_connect_setup(wpa_s);
1796                 wpas_p2p_set_group_idle_timeout(wpa_s);
1797
1798                 if (wpa_s->p2p_first_connection_timeout) {
1799                         wpa_dbg(wpa_s, MSG_DEBUG,
1800                                 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1801                                 wpa_s->p2p_first_connection_timeout);
1802                         wpa_s->p2p_go_group_formation_completed = 0;
1803                         wpa_s->global->p2p_group_formation = wpa_s;
1804                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1805                                              wpa_s->parent, NULL);
1806                         eloop_register_timeout(
1807                                 wpa_s->p2p_first_connection_timeout, 0,
1808                                 wpas_p2p_group_formation_timeout,
1809                                 wpa_s->parent, NULL);
1810                 }
1811
1812                 return;
1813         }
1814
1815         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1816         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1817                                               params->peer_interface_addr)) {
1818                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1819                            "filtering");
1820                 return;
1821         }
1822         if (params->wps_method == WPS_PBC) {
1823                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1824                                           params->peer_device_addr);
1825 #ifdef CONFIG_WPS_NFC
1826         } else if (params->wps_method == WPS_NFC) {
1827                 if (wpa_s->parent->p2p_oob_dev_pw_id !=
1828                     DEV_PW_NFC_CONNECTION_HANDOVER &&
1829                     !wpa_s->parent->p2p_oob_dev_pw) {
1830                         wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1831                         return;
1832                 }
1833                 wpas_ap_wps_add_nfc_pw(
1834                         wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
1835                         wpa_s->parent->p2p_oob_dev_pw,
1836                         wpa_s->parent->p2p_peer_oob_pk_hash_known ?
1837                         wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
1838 #endif /* CONFIG_WPS_NFC */
1839         } else if (wpa_s->p2p_pin[0])
1840                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1841                                           wpa_s->p2p_pin, NULL, 0, 0);
1842         os_free(wpa_s->go_params);
1843         wpa_s->go_params = NULL;
1844 }
1845
1846
1847 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1848                               struct p2p_go_neg_results *params,
1849                               int group_formation)
1850 {
1851         struct wpa_ssid *ssid;
1852
1853         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1854         if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1855                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1856                         "results");
1857                 return;
1858         }
1859
1860         ssid = wpa_config_add_network(wpa_s->conf);
1861         if (ssid == NULL) {
1862                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1863                 return;
1864         }
1865
1866         wpa_s->show_group_started = 0;
1867         wpa_s->p2p_go_group_formation_completed = 0;
1868         wpa_s->group_formation_reported = 0;
1869         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
1870
1871         wpa_config_set_network_defaults(ssid);
1872         ssid->temporary = 1;
1873         ssid->p2p_group = 1;
1874         ssid->p2p_persistent_group = params->persistent_group;
1875         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1876                 WPAS_MODE_P2P_GO;
1877         ssid->frequency = params->freq;
1878         ssid->ht40 = params->ht40;
1879         ssid->vht = params->vht;
1880         ssid->max_oper_chwidth = params->max_oper_chwidth;
1881         ssid->vht_center_freq2 = params->vht_center_freq2;
1882         ssid->ssid = os_zalloc(params->ssid_len + 1);
1883         if (ssid->ssid) {
1884                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1885                 ssid->ssid_len = params->ssid_len;
1886         }
1887         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1888         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1889         ssid->proto = WPA_PROTO_RSN;
1890         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1891         ssid->group_cipher = WPA_CIPHER_CCMP;
1892         if (params->freq > 56160) {
1893                 /*
1894                  * Enable GCMP instead of CCMP as pairwise_cipher and
1895                  * group_cipher in 60 GHz.
1896                  */
1897                 ssid->pairwise_cipher = WPA_CIPHER_GCMP;
1898                 ssid->group_cipher = WPA_CIPHER_GCMP;
1899         }
1900         if (os_strlen(params->passphrase) > 0) {
1901                 ssid->passphrase = os_strdup(params->passphrase);
1902                 if (ssid->passphrase == NULL) {
1903                         wpa_msg_global(wpa_s, MSG_ERROR,
1904                                        "P2P: Failed to copy passphrase for GO");
1905                         wpa_config_remove_network(wpa_s->conf, ssid->id);
1906                         return;
1907                 }
1908         } else
1909                 ssid->passphrase = NULL;
1910         ssid->psk_set = params->psk_set;
1911         if (ssid->psk_set)
1912                 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1913         else if (ssid->passphrase)
1914                 wpa_config_update_psk(ssid);
1915         ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
1916
1917         wpa_s->ap_configured_cb = p2p_go_configured;
1918         wpa_s->ap_configured_cb_ctx = wpa_s;
1919         wpa_s->ap_configured_cb_data = wpa_s->go_params;
1920         wpa_s->scan_req = NORMAL_SCAN_REQ;
1921         wpa_s->connect_without_scan = ssid;
1922         wpa_s->reassociate = 1;
1923         wpa_s->disconnected = 0;
1924         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1925                 "start GO)");
1926         wpa_supplicant_req_scan(wpa_s, 0, 0);
1927 }
1928
1929
1930 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1931                                   const struct wpa_supplicant *src)
1932 {
1933         struct wpa_config *d;
1934         const struct wpa_config *s;
1935
1936         d = dst->conf;
1937         s = src->conf;
1938
1939 #define C(n) if (s->n) d->n = os_strdup(s->n)
1940         C(device_name);
1941         C(manufacturer);
1942         C(model_name);
1943         C(model_number);
1944         C(serial_number);
1945         C(config_methods);
1946 #undef C
1947
1948         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1949         os_memcpy(d->sec_device_type, s->sec_device_type,
1950                   sizeof(d->sec_device_type));
1951         d->num_sec_device_types = s->num_sec_device_types;
1952
1953         d->p2p_group_idle = s->p2p_group_idle;
1954         d->p2p_go_freq_change_policy = s->p2p_go_freq_change_policy;
1955         d->p2p_intra_bss = s->p2p_intra_bss;
1956         d->persistent_reconnect = s->persistent_reconnect;
1957         d->max_num_sta = s->max_num_sta;
1958         d->pbc_in_m1 = s->pbc_in_m1;
1959         d->ignore_old_scan_res = s->ignore_old_scan_res;
1960         d->beacon_int = s->beacon_int;
1961         d->dtim_period = s->dtim_period;
1962         d->p2p_go_ctwindow = s->p2p_go_ctwindow;
1963         d->disassoc_low_ack = s->disassoc_low_ack;
1964         d->disable_scan_offload = s->disable_scan_offload;
1965         d->passive_scan = s->passive_scan;
1966
1967         if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey) {
1968                 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
1969                 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
1970         }
1971         d->p2p_cli_probe = s->p2p_cli_probe;
1972 }
1973
1974
1975 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
1976                                       char *ifname, size_t len)
1977 {
1978         char *ifname_ptr = wpa_s->ifname;
1979
1980         if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
1981                        os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
1982                 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
1983         }
1984
1985         os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
1986         if (os_strlen(ifname) >= IFNAMSIZ &&
1987             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
1988                 int res;
1989
1990                 /* Try to avoid going over the IFNAMSIZ length limit */
1991                 res = os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
1992                 if (os_snprintf_error(len, res) && len)
1993                         ifname[len - 1] = '\0';
1994         }
1995 }
1996
1997
1998 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
1999                                         enum wpa_driver_if_type type)
2000 {
2001         char ifname[120], force_ifname[120];
2002
2003         if (wpa_s->pending_interface_name[0]) {
2004                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
2005                            "- skip creation of a new one");
2006                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
2007                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
2008                                    "unknown?! ifname='%s'",
2009                                    wpa_s->pending_interface_name);
2010                         return -1;
2011                 }
2012                 return 0;
2013         }
2014
2015         wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
2016         force_ifname[0] = '\0';
2017
2018         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
2019                    ifname);
2020         wpa_s->p2p_group_idx++;
2021
2022         wpa_s->pending_interface_type = type;
2023         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
2024                            wpa_s->pending_interface_addr, NULL) < 0) {
2025                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
2026                            "interface");
2027                 return -1;
2028         }
2029
2030         if (force_ifname[0]) {
2031                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
2032                            force_ifname);
2033                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
2034                            sizeof(wpa_s->pending_interface_name));
2035         } else
2036                 os_strlcpy(wpa_s->pending_interface_name, ifname,
2037                            sizeof(wpa_s->pending_interface_name));
2038         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
2039                    MACSTR, wpa_s->pending_interface_name,
2040                    MAC2STR(wpa_s->pending_interface_addr));
2041
2042         return 0;
2043 }
2044
2045
2046 static void wpas_p2p_remove_pending_group_interface(
2047         struct wpa_supplicant *wpa_s)
2048 {
2049         if (!wpa_s->pending_interface_name[0] ||
2050             is_zero_ether_addr(wpa_s->pending_interface_addr))
2051                 return; /* No pending virtual interface */
2052
2053         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
2054                    wpa_s->pending_interface_name);
2055         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
2056                           wpa_s->pending_interface_name);
2057         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2058         wpa_s->pending_interface_name[0] = '\0';
2059         wpa_s->global->pending_group_iface_for_p2ps = 0;
2060 }
2061
2062
2063 static struct wpa_supplicant *
2064 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
2065 {
2066         struct wpa_interface iface;
2067         struct wpa_supplicant *group_wpa_s;
2068
2069         if (!wpa_s->pending_interface_name[0]) {
2070                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
2071                 if (!wpas_p2p_create_iface(wpa_s))
2072                         return NULL;
2073                 /*
2074                  * Something has forced us to remove the pending interface; try
2075                  * to create a new one and hope for the best that we will get
2076                  * the same local address.
2077                  */
2078                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
2079                                                  WPA_IF_P2P_CLIENT) < 0)
2080                         return NULL;
2081         }
2082
2083         os_memset(&iface, 0, sizeof(iface));
2084         iface.ifname = wpa_s->pending_interface_name;
2085         iface.driver = wpa_s->driver->name;
2086         if (wpa_s->conf->ctrl_interface == NULL &&
2087             wpa_s->parent != wpa_s &&
2088             wpa_s->p2p_mgmt &&
2089             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
2090                 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
2091         else
2092                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
2093         iface.driver_param = wpa_s->conf->driver_param;
2094         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
2095         if (group_wpa_s == NULL) {
2096                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
2097                            "wpa_supplicant interface");
2098                 return NULL;
2099         }
2100         wpa_s->pending_interface_name[0] = '\0';
2101         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
2102                 P2P_GROUP_INTERFACE_CLIENT;
2103         wpa_s->global->p2p_group_formation = group_wpa_s;
2104         wpa_s->global->pending_group_iface_for_p2ps = 0;
2105
2106         wpas_p2p_clone_config(group_wpa_s, wpa_s);
2107
2108         return group_wpa_s;
2109 }
2110
2111
2112 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
2113                                              void *timeout_ctx)
2114 {
2115         struct wpa_supplicant *wpa_s = eloop_ctx;
2116         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
2117         wpas_p2p_group_formation_failed(wpa_s, 0);
2118 }
2119
2120
2121 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
2122                                             int already_deleted)
2123 {
2124         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2125                              wpa_s->parent, NULL);
2126         if (wpa_s->global->p2p)
2127                 p2p_group_formation_failed(wpa_s->global->p2p);
2128         wpas_group_formation_completed(wpa_s, 0, already_deleted);
2129 }
2130
2131
2132 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
2133 {
2134         wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
2135         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2136                              wpa_s->parent, NULL);
2137         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2138                                wpa_s->parent, NULL);
2139         wpa_s->global->p2p_fail_on_wps_complete = 0;
2140 }
2141
2142
2143 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
2144 {
2145         if (wpa_s->global->p2p_group_formation != wpa_s)
2146                 return;
2147         /* Speed up group formation timeout since this cannot succeed */
2148         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2149                              wpa_s->parent, NULL);
2150         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2151                                wpa_s->parent, NULL);
2152 }
2153
2154
2155 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
2156 {
2157         struct wpa_supplicant *wpa_s = ctx;
2158
2159         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2160                 wpa_drv_cancel_remain_on_channel(wpa_s);
2161                 wpa_s->off_channel_freq = 0;
2162                 wpa_s->roc_waiting_drv_freq = 0;
2163         }
2164
2165         if (res->status) {
2166                 wpa_msg_global(wpa_s, MSG_INFO,
2167                                P2P_EVENT_GO_NEG_FAILURE "status=%d",
2168                                res->status);
2169                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
2170                 wpas_p2p_remove_pending_group_interface(wpa_s);
2171                 return;
2172         }
2173
2174         if (!res->role_go) {
2175                 /* Inform driver of the operating channel of GO. */
2176                 wpa_drv_set_prob_oper_freq(wpa_s, res->freq);
2177         }
2178
2179         if (wpa_s->p2p_go_ht40)
2180                 res->ht40 = 1;
2181         if (wpa_s->p2p_go_vht)
2182                 res->vht = 1;
2183         res->max_oper_chwidth = wpa_s->p2p_go_max_oper_chwidth;
2184         res->vht_center_freq2 = wpa_s->p2p_go_vht_center_freq2;
2185
2186         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
2187                        "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
2188                        " wps_method=%s",
2189                        res->role_go ? "GO" : "client", res->freq, res->ht40,
2190                        MAC2STR(res->peer_device_addr),
2191                        MAC2STR(res->peer_interface_addr),
2192                        p2p_wps_method_text(res->wps_method));
2193         wpas_notify_p2p_go_neg_completed(wpa_s, res);
2194
2195         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
2196                 struct wpa_ssid *ssid;
2197                 ssid = wpa_config_get_network(wpa_s->conf,
2198                                               wpa_s->p2p_persistent_id);
2199                 if (ssid && ssid->disabled == 2 &&
2200                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
2201                         size_t len = os_strlen(ssid->passphrase);
2202                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
2203                                    "on requested persistent group");
2204                         os_memcpy(res->passphrase, ssid->passphrase, len);
2205                         res->passphrase[len] = '\0';
2206                 }
2207         }
2208
2209         if (wpa_s->create_p2p_iface) {
2210                 struct wpa_supplicant *group_wpa_s =
2211                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
2212                 if (group_wpa_s == NULL) {
2213                         wpas_p2p_remove_pending_group_interface(wpa_s);
2214                         eloop_cancel_timeout(wpas_p2p_long_listen_timeout,
2215                                              wpa_s, NULL);
2216                         wpas_p2p_group_formation_failed(wpa_s, 1);
2217                         return;
2218                 }
2219                 if (group_wpa_s != wpa_s) {
2220                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
2221                                   sizeof(group_wpa_s->p2p_pin));
2222                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
2223                 }
2224                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2225                 wpa_s->pending_interface_name[0] = '\0';
2226                 group_wpa_s->p2p_in_provisioning = 1;
2227
2228                 if (res->role_go) {
2229                         wpas_start_wps_go(group_wpa_s, res, 1);
2230                 } else {
2231                         os_get_reltime(&group_wpa_s->scan_min_time);
2232                         wpas_start_wps_enrollee(group_wpa_s, res);
2233                 }
2234         } else {
2235                 wpa_s->p2p_in_provisioning = 1;
2236                 wpa_s->global->p2p_group_formation = wpa_s;
2237
2238                 if (res->role_go) {
2239                         wpas_start_wps_go(wpa_s, res, 1);
2240                 } else {
2241                         os_get_reltime(&wpa_s->scan_min_time);
2242                         wpas_start_wps_enrollee(ctx, res);
2243                 }
2244         }
2245
2246         wpa_s->p2p_long_listen = 0;
2247         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2248
2249         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2250         eloop_register_timeout(15 + res->peer_config_timeout / 100,
2251                                (res->peer_config_timeout % 100) * 10000,
2252                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
2253 }
2254
2255
2256 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id,
2257                                u8 go_intent)
2258 {
2259         struct wpa_supplicant *wpa_s = ctx;
2260         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
2261                        " dev_passwd_id=%u go_intent=%u", MAC2STR(src),
2262                        dev_passwd_id, go_intent);
2263
2264         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id, go_intent);
2265 }
2266
2267
2268 static void wpas_dev_found(void *ctx, const u8 *addr,
2269                            const struct p2p_peer_info *info,
2270                            int new_device)
2271 {
2272 #ifndef CONFIG_NO_STDOUT_DEBUG
2273         struct wpa_supplicant *wpa_s = ctx;
2274         char devtype[WPS_DEV_TYPE_BUFSIZE];
2275         char *wfd_dev_info_hex = NULL;
2276
2277 #ifdef CONFIG_WIFI_DISPLAY
2278         wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
2279                                                     WFD_SUBELEM_DEVICE_INFO);
2280 #endif /* CONFIG_WIFI_DISPLAY */
2281
2282         if (info->p2ps_instance) {
2283                 char str[256];
2284                 const u8 *buf = wpabuf_head(info->p2ps_instance);
2285                 size_t len = wpabuf_len(info->p2ps_instance);
2286
2287                 while (len) {
2288                         u32 id;
2289                         u16 methods;
2290                         u8 str_len;
2291
2292                         if (len < 4 + 2 + 1)
2293                                 break;
2294                         id = WPA_GET_LE32(buf);
2295                         buf += sizeof(u32);
2296                         methods = WPA_GET_BE16(buf);
2297                         buf += sizeof(u16);
2298                         str_len = *buf++;
2299                         if (str_len > len - 4 - 2 - 1)
2300                                 break;
2301                         os_memcpy(str, buf, str_len);
2302                         str[str_len] = '\0';
2303                         buf += str_len;
2304                         len -= str_len + sizeof(u32) + sizeof(u16) + sizeof(u8);
2305
2306                         wpa_msg_global(wpa_s, MSG_INFO,
2307                                        P2P_EVENT_DEVICE_FOUND MACSTR
2308                                        " p2p_dev_addr=" MACSTR
2309                                        " pri_dev_type=%s name='%s'"
2310                                        " config_methods=0x%x"
2311                                        " dev_capab=0x%x"
2312                                        " group_capab=0x%x"
2313                                        " adv_id=%x asp_svc=%s%s",
2314                                        MAC2STR(addr),
2315                                        MAC2STR(info->p2p_device_addr),
2316                                        wps_dev_type_bin2str(
2317                                                info->pri_dev_type,
2318                                                devtype, sizeof(devtype)),
2319                                        info->device_name, methods,
2320                                        info->dev_capab, info->group_capab,
2321                                        id, str,
2322                                        info->vendor_elems ?
2323                                        " vendor_elems=1" : "");
2324                 }
2325                 goto done;
2326         }
2327
2328         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
2329                        " p2p_dev_addr=" MACSTR
2330                        " pri_dev_type=%s name='%s' config_methods=0x%x "
2331                        "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d",
2332                        MAC2STR(addr), MAC2STR(info->p2p_device_addr),
2333                        wps_dev_type_bin2str(info->pri_dev_type, devtype,
2334                                             sizeof(devtype)),
2335                        info->device_name, info->config_methods,
2336                        info->dev_capab, info->group_capab,
2337                        wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
2338                        wfd_dev_info_hex ? wfd_dev_info_hex : "",
2339                        info->vendor_elems ? " vendor_elems=1" : "",
2340                        new_device);
2341
2342 done:
2343         os_free(wfd_dev_info_hex);
2344 #endif /* CONFIG_NO_STDOUT_DEBUG */
2345
2346         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
2347 }
2348
2349
2350 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
2351 {
2352         struct wpa_supplicant *wpa_s = ctx;
2353
2354         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
2355                        "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
2356
2357         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
2358 }
2359
2360
2361 static void wpas_find_stopped(void *ctx)
2362 {
2363         struct wpa_supplicant *wpa_s = ctx;
2364         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
2365         wpas_notify_p2p_find_stopped(wpa_s);
2366 }
2367
2368
2369 struct wpas_p2p_listen_work {
2370         unsigned int freq;
2371         unsigned int duration;
2372         struct wpabuf *probe_resp_ie;
2373 };
2374
2375
2376 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
2377 {
2378         if (lwork == NULL)
2379                 return;
2380         wpabuf_free(lwork->probe_resp_ie);
2381         os_free(lwork);
2382 }
2383
2384
2385 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
2386 {
2387         struct wpas_p2p_listen_work *lwork;
2388
2389         if (!wpa_s->p2p_listen_work)
2390                 return;
2391
2392         lwork = wpa_s->p2p_listen_work->ctx;
2393         wpas_p2p_listen_work_free(lwork);
2394         radio_work_done(wpa_s->p2p_listen_work);
2395         wpa_s->p2p_listen_work = NULL;
2396 }
2397
2398
2399 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
2400 {
2401         struct wpa_supplicant *wpa_s = work->wpa_s;
2402         struct wpas_p2p_listen_work *lwork = work->ctx;
2403         unsigned int duration;
2404
2405         if (deinit) {
2406                 if (work->started) {
2407                         wpa_s->p2p_listen_work = NULL;
2408                         wpas_stop_listen(wpa_s);
2409                 }
2410                 wpas_p2p_listen_work_free(lwork);
2411                 return;
2412         }
2413
2414         wpa_s->p2p_listen_work = work;
2415
2416         wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
2417
2418         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
2419                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
2420                            "report received Probe Request frames");
2421                 wpas_p2p_listen_work_done(wpa_s);
2422                 return;
2423         }
2424
2425         wpa_s->pending_listen_freq = lwork->freq;
2426         wpa_s->pending_listen_duration = lwork->duration;
2427
2428         duration = lwork->duration;
2429 #ifdef CONFIG_TESTING_OPTIONS
2430         if (wpa_s->extra_roc_dur) {
2431                 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u",
2432                            duration, duration + wpa_s->extra_roc_dur);
2433                 duration += wpa_s->extra_roc_dur;
2434         }
2435 #endif /* CONFIG_TESTING_OPTIONS */
2436
2437         if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) {
2438                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
2439                            "to remain on channel (%u MHz) for Listen "
2440                            "state", lwork->freq);
2441                 wpas_p2p_listen_work_done(wpa_s);
2442                 wpa_s->pending_listen_freq = 0;
2443                 return;
2444         }
2445         wpa_s->off_channel_freq = 0;
2446         wpa_s->roc_waiting_drv_freq = lwork->freq;
2447 }
2448
2449
2450 static int wpas_start_listen(void *ctx, unsigned int freq,
2451                              unsigned int duration,
2452                              const struct wpabuf *probe_resp_ie)
2453 {
2454         struct wpa_supplicant *wpa_s = ctx;
2455         struct wpas_p2p_listen_work *lwork;
2456
2457         if (wpa_s->p2p_listen_work) {
2458                 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
2459                 return -1;
2460         }
2461
2462         lwork = os_zalloc(sizeof(*lwork));
2463         if (lwork == NULL)
2464                 return -1;
2465         lwork->freq = freq;
2466         lwork->duration = duration;
2467         if (probe_resp_ie) {
2468                 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
2469                 if (lwork->probe_resp_ie == NULL) {
2470                         wpas_p2p_listen_work_free(lwork);
2471                         return -1;
2472                 }
2473         }
2474
2475         if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
2476                            lwork) < 0) {
2477                 wpas_p2p_listen_work_free(lwork);
2478                 return -1;
2479         }
2480
2481         return 0;
2482 }
2483
2484
2485 static void wpas_stop_listen(void *ctx)
2486 {
2487         struct wpa_supplicant *wpa_s = ctx;
2488         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2489                 wpa_drv_cancel_remain_on_channel(wpa_s);
2490                 wpa_s->off_channel_freq = 0;
2491                 wpa_s->roc_waiting_drv_freq = 0;
2492         }
2493         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
2494
2495         /*
2496          * Don't cancel Probe Request RX reporting for a connected P2P Client
2497          * handling Probe Request frames.
2498          */
2499         if (!wpa_s->p2p_cli_probe)
2500                 wpa_drv_probe_req_report(wpa_s, 0);
2501
2502         wpas_p2p_listen_work_done(wpa_s);
2503 }
2504
2505
2506 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf,
2507                                 unsigned int freq)
2508 {
2509         struct wpa_supplicant *wpa_s = ctx;
2510         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1,
2511                                  freq);
2512 }
2513
2514
2515 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2516                                          const u8 *peer, const char *params,
2517                                          unsigned int generated_pin)
2518 {
2519         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2520                        " %08d%s", MAC2STR(peer), generated_pin, params);
2521 }
2522
2523
2524 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2525                                         const u8 *peer, const char *params)
2526 {
2527         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2528                        "%s", MAC2STR(peer), params);
2529 }
2530
2531
2532 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2533                                const u8 *dev_addr, const u8 *pri_dev_type,
2534                                const char *dev_name, u16 supp_config_methods,
2535                                u8 dev_capab, u8 group_capab, const u8 *group_id,
2536                                size_t group_id_len)
2537 {
2538         struct wpa_supplicant *wpa_s = ctx;
2539         char devtype[WPS_DEV_TYPE_BUFSIZE];
2540         char params[300];
2541         u8 empty_dev_type[8];
2542         unsigned int generated_pin = 0;
2543         struct wpa_supplicant *group = NULL;
2544         int res;
2545
2546         if (group_id) {
2547                 for (group = wpa_s->global->ifaces; group; group = group->next)
2548                 {
2549                         struct wpa_ssid *s = group->current_ssid;
2550                         if (s != NULL &&
2551                             s->mode == WPAS_MODE_P2P_GO &&
2552                             group_id_len - ETH_ALEN == s->ssid_len &&
2553                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2554                                       s->ssid_len) == 0)
2555                                 break;
2556                 }
2557         }
2558
2559         if (pri_dev_type == NULL) {
2560                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2561                 pri_dev_type = empty_dev_type;
2562         }
2563         res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2564                           " pri_dev_type=%s name='%s' config_methods=0x%x "
2565                           "dev_capab=0x%x group_capab=0x%x%s%s",
2566                           MAC2STR(dev_addr),
2567                           wps_dev_type_bin2str(pri_dev_type, devtype,
2568                                                sizeof(devtype)),
2569                           dev_name, supp_config_methods, dev_capab, group_capab,
2570                           group ? " group=" : "",
2571                           group ? group->ifname : "");
2572         if (os_snprintf_error(sizeof(params), res))
2573                 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated");
2574         params[sizeof(params) - 1] = '\0';
2575
2576         if (config_methods & WPS_CONFIG_DISPLAY) {
2577                 generated_pin = wps_generate_pin();
2578                 wpas_prov_disc_local_display(wpa_s, peer, params,
2579                                              generated_pin);
2580         } else if (config_methods & WPS_CONFIG_KEYPAD)
2581                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2582         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2583                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2584                                MACSTR "%s", MAC2STR(peer), params);
2585
2586         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2587                                             P2P_PROV_DISC_SUCCESS,
2588                                             config_methods, generated_pin);
2589 }
2590
2591
2592 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2593 {
2594         struct wpa_supplicant *wpa_s = ctx;
2595         unsigned int generated_pin = 0;
2596         char params[20];
2597
2598         if (wpa_s->pending_pd_before_join &&
2599             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2600              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2601                 wpa_s->pending_pd_before_join = 0;
2602                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2603                            "join-existing-group operation");
2604                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2605                 return;
2606         }
2607
2608         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2609             wpa_s->pending_pd_use == AUTO_PD_GO_NEG) {
2610                 int res;
2611
2612                 res = os_snprintf(params, sizeof(params), " peer_go=%d",
2613                                   wpa_s->pending_pd_use == AUTO_PD_JOIN);
2614                 if (os_snprintf_error(sizeof(params), res))
2615                         params[sizeof(params) - 1] = '\0';
2616         } else
2617                 params[0] = '\0';
2618
2619         if (config_methods & WPS_CONFIG_DISPLAY)
2620                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2621         else if (config_methods & WPS_CONFIG_KEYPAD) {
2622                 generated_pin = wps_generate_pin();
2623                 wpas_prov_disc_local_display(wpa_s, peer, params,
2624                                              generated_pin);
2625         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2626                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2627                                MACSTR "%s", MAC2STR(peer), params);
2628
2629         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2630                                             P2P_PROV_DISC_SUCCESS,
2631                                             config_methods, generated_pin);
2632 }
2633
2634
2635 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2636                                 enum p2p_prov_disc_status status,
2637                                 u32 adv_id, const u8 *adv_mac,
2638                                 const char *deferred_session_resp)
2639 {
2640         struct wpa_supplicant *wpa_s = ctx;
2641
2642         if (wpa_s->p2p_fallback_to_go_neg) {
2643                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2644                         "failed - fall back to GO Negotiation");
2645                 wpa_msg_global(wpa_s->parent, MSG_INFO,
2646                                P2P_EVENT_FALLBACK_TO_GO_NEG
2647                                "reason=PD-failed");
2648                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2649                 return;
2650         }
2651
2652         if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2653                 wpa_s->pending_pd_before_join = 0;
2654                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2655                            "join-existing-group operation (no ACK for PD "
2656                            "Req attempts)");
2657                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2658                 return;
2659         }
2660
2661         if (adv_id && adv_mac && deferred_session_resp) {
2662                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2663                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x"
2664                                " deferred_session_resp='%s'",
2665                                MAC2STR(peer), status, adv_id,
2666                                deferred_session_resp);
2667         } else if (adv_id && adv_mac) {
2668                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2669                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x",
2670                                MAC2STR(peer), status, adv_id);
2671         } else {
2672                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2673                                " p2p_dev_addr=" MACSTR " status=%d",
2674                                MAC2STR(peer), status);
2675         }
2676
2677         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2678                                             status, 0, 0);
2679 }
2680
2681
2682 static int freq_included(struct wpa_supplicant *wpa_s,
2683                          const struct p2p_channels *channels,
2684                          unsigned int freq)
2685 {
2686         if ((channels == NULL || p2p_channels_includes_freq(channels, freq)) &&
2687             wpas_p2p_go_is_peer_freq(wpa_s, freq))
2688                 return 1;
2689         return 0;
2690 }
2691
2692
2693 static void wpas_p2p_go_update_common_freqs(struct wpa_supplicant *wpa_s)
2694 {
2695         unsigned int num = P2P_MAX_CHANNELS;
2696         int *common_freqs;
2697         int ret;
2698
2699         p2p_go_dump_common_freqs(wpa_s);
2700         common_freqs = os_calloc(num, sizeof(int));
2701         if (!common_freqs)
2702                 return;
2703
2704         ret = p2p_group_get_common_freqs(wpa_s->p2p_group, common_freqs, &num);
2705         if (ret < 0) {
2706                 wpa_dbg(wpa_s, MSG_DEBUG,
2707                         "P2P: Failed to get group common freqs");
2708                 os_free(common_freqs);
2709                 return;
2710         }
2711
2712         os_free(wpa_s->p2p_group_common_freqs);
2713         wpa_s->p2p_group_common_freqs = common_freqs;
2714         wpa_s->p2p_group_common_freqs_num = num;
2715         p2p_go_dump_common_freqs(wpa_s);
2716 }
2717
2718
2719 /*
2720  * Check if the given frequency is one of the possible operating frequencies
2721  * set after the completion of the GO Negotiation.
2722  */
2723 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq)
2724 {
2725         unsigned int i;
2726
2727         p2p_go_dump_common_freqs(wpa_s);
2728
2729         /* assume no restrictions */
2730         if (!wpa_s->p2p_group_common_freqs_num)
2731                 return 1;
2732
2733         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
2734                 if (wpa_s->p2p_group_common_freqs[i] == freq)
2735                         return 1;
2736         }
2737         return 0;
2738 }
2739
2740
2741 static int wpas_sta_check_ecsa(struct hostapd_data *hapd,
2742                                struct sta_info *sta, void *ctx)
2743 {
2744         int *ecsa_support = ctx;
2745
2746         *ecsa_support &= sta->ecsa_supported;
2747
2748         return 0;
2749 }
2750
2751
2752 /* Check if all the peers support eCSA */
2753 static int wpas_p2p_go_clients_support_ecsa(struct wpa_supplicant *wpa_s)
2754 {
2755         int ecsa_support = 1;
2756
2757         ap_for_each_sta(wpa_s->ap_iface->bss[0], wpas_sta_check_ecsa,
2758                         &ecsa_support);
2759
2760         return ecsa_support;
2761 }
2762
2763
2764 /**
2765  * Pick the best frequency to use from all the currently used frequencies.
2766  */
2767 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s,
2768                                         struct wpa_used_freq_data *freqs,
2769                                         unsigned int num)
2770 {
2771         unsigned int i, c;
2772
2773         /* find a candidate freq that is supported by P2P */
2774         for (c = 0; c < num; c++)
2775                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq))
2776                         break;
2777
2778         if (c == num)
2779                 return 0;
2780
2781         /* once we have a candidate, try to find a 'better' one */
2782         for (i = c + 1; i < num; i++) {
2783                 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
2784                         continue;
2785
2786                 /*
2787                  * 1. Infrastructure station interfaces have higher preference.
2788                  * 2. P2P Clients have higher preference.
2789                  * 3. All others.
2790                  */
2791                 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) {
2792                         c = i;
2793                         break;
2794                 }
2795
2796                 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT))
2797                         c = i;
2798         }
2799         return freqs[c].freq;
2800 }
2801
2802
2803 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2804                                   const u8 *go_dev_addr, const u8 *ssid,
2805                                   size_t ssid_len, int *go, u8 *group_bssid,
2806                                   int *force_freq, int persistent_group,
2807                                   const struct p2p_channels *channels,
2808                                   int dev_pw_id)
2809 {
2810         struct wpa_supplicant *wpa_s = ctx;
2811         struct wpa_ssid *s;
2812         struct wpa_used_freq_data *freqs;
2813         struct wpa_supplicant *grp;
2814         int best_freq;
2815
2816         if (!persistent_group) {
2817                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2818                            " to join an active group (SSID: %s)",
2819                            MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2820                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2821                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2822                      == 0 ||
2823                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2824                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2825                                    "authorized invitation");
2826                         goto accept_inv;
2827                 }
2828
2829 #ifdef CONFIG_WPS_NFC
2830                 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled &&
2831                     dev_pw_id == wpa_s->p2p_oob_dev_pw_id) {
2832                         wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
2833                         wpa_s->p2p_wps_method = WPS_NFC;
2834                         wpa_s->pending_join_wps_method = WPS_NFC;
2835                         os_memcpy(wpa_s->pending_join_dev_addr,
2836                                   go_dev_addr, ETH_ALEN);
2837                         os_memcpy(wpa_s->pending_join_iface_addr,
2838                                   bssid, ETH_ALEN);
2839                         goto accept_inv;
2840                 }
2841 #endif /* CONFIG_WPS_NFC */
2842
2843                 /*
2844                  * Do not accept the invitation automatically; notify user and
2845                  * request approval.
2846                  */
2847                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2848         }
2849
2850         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2851         if (grp) {
2852                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2853                            "running persistent group");
2854                 if (*go)
2855                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2856                 goto accept_inv;
2857         }
2858
2859         if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2860             os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2861                 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2862                            "invitation to re-invoke a persistent group");
2863                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
2864         } else if (!wpa_s->conf->persistent_reconnect)
2865                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2866
2867         for (s = wpa_s->conf->ssid; s; s = s->next) {
2868                 if (s->disabled == 2 &&
2869                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2870                     s->ssid_len == ssid_len &&
2871                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2872                         break;
2873         }
2874
2875         if (!s) {
2876                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2877                            " requested reinvocation of an unknown group",
2878                            MAC2STR(sa));
2879                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2880         }
2881
2882         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2883                 *go = 1;
2884                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2885                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2886                                    "interface is already in use - reject "
2887                                    "invitation");
2888                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2889                 }
2890                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2891         } else if (s->mode == WPAS_MODE_P2P_GO) {
2892                 *go = 1;
2893                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2894                 {
2895                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2896                                    "interface address for the group");
2897                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2898                 }
2899                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2900                           ETH_ALEN);
2901         }
2902
2903 accept_inv:
2904         wpas_p2p_set_own_freq_preference(wpa_s, 0);
2905
2906         best_freq = 0;
2907         freqs = os_calloc(wpa_s->num_multichan_concurrent,
2908                           sizeof(struct wpa_used_freq_data));
2909         if (freqs) {
2910                 int num_channels = wpa_s->num_multichan_concurrent;
2911                 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels);
2912                 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
2913                 os_free(freqs);
2914         }
2915
2916         /* Get one of the frequencies currently in use */
2917         if (best_freq > 0) {
2918                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
2919                 wpas_p2p_set_own_freq_preference(wpa_s, best_freq);
2920
2921                 if (wpa_s->num_multichan_concurrent < 2 ||
2922                     wpas_p2p_num_unused_channels(wpa_s) < 1) {
2923                         wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
2924                         *force_freq = best_freq;
2925                 }
2926         }
2927
2928         if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
2929             wpas_p2p_num_unused_channels(wpa_s) > 0) {
2930                 if (*go == 0) {
2931                         /* We are the client */
2932                         wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
2933                                    "running a GO but we are capable of MCC, "
2934                                    "figure out the best channel to use");
2935                         *force_freq = 0;
2936                 } else if (!freq_included(wpa_s, channels, *force_freq)) {
2937                         /* We are the GO, and *force_freq is not in the
2938                          * intersection */
2939                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
2940                                    "in intersection but we are capable of MCC, "
2941                                    "figure out the best channel to use",
2942                                    *force_freq);
2943                         *force_freq = 0;
2944                 }
2945         }
2946
2947         return P2P_SC_SUCCESS;
2948 }
2949
2950
2951 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
2952                                      const u8 *ssid, size_t ssid_len,
2953                                      const u8 *go_dev_addr, u8 status,
2954                                      int op_freq)
2955 {
2956         struct wpa_supplicant *wpa_s = ctx;
2957         struct wpa_ssid *s;
2958
2959         for (s = wpa_s->conf->ssid; s; s = s->next) {
2960                 if (s->disabled == 2 &&
2961                     s->ssid_len == ssid_len &&
2962                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2963                         break;
2964         }
2965
2966         if (status == P2P_SC_SUCCESS) {
2967                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2968                            " was accepted; op_freq=%d MHz, SSID=%s",
2969                            MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
2970                 if (s) {
2971                         int go = s->mode == WPAS_MODE_P2P_GO;
2972                         wpas_p2p_group_add_persistent(
2973                                 wpa_s, s, go, 0, op_freq, 0, 0, 0, 0, NULL,
2974                                 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0,
2975                                 1);
2976                 } else if (bssid) {
2977                         wpa_s->user_initiated_pd = 0;
2978                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
2979                                       wpa_s->p2p_wps_method, 0, op_freq,
2980                                       ssid, ssid_len);
2981                 }
2982                 return;
2983         }
2984
2985         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
2986                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2987                            " was rejected (status %u)", MAC2STR(sa), status);
2988                 return;
2989         }
2990
2991         if (!s) {
2992                 if (bssid) {
2993                         wpa_msg_global(wpa_s, MSG_INFO,
2994                                        P2P_EVENT_INVITATION_RECEIVED
2995                                        "sa=" MACSTR " go_dev_addr=" MACSTR
2996                                        " bssid=" MACSTR " unknown-network",
2997                                        MAC2STR(sa), MAC2STR(go_dev_addr),
2998                                        MAC2STR(bssid));
2999                 } else {
3000                         wpa_msg_global(wpa_s, MSG_INFO,
3001                                        P2P_EVENT_INVITATION_RECEIVED
3002                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3003                                        " unknown-network",
3004                                        MAC2STR(sa), MAC2STR(go_dev_addr));
3005                 }
3006                 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr,
3007                                                     bssid, 0, op_freq);
3008                 return;
3009         }
3010
3011         if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
3012                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3013                                "sa=" MACSTR " persistent=%d freq=%d",
3014                                MAC2STR(sa), s->id, op_freq);
3015         } else {
3016                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3017                                "sa=" MACSTR " persistent=%d",
3018                                MAC2STR(sa), s->id);
3019         }
3020         wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr, bssid,
3021                                             s->id, op_freq);
3022 }
3023
3024
3025 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
3026                                         struct wpa_ssid *ssid,
3027                                         const u8 *peer, int inv)
3028 {
3029         size_t i;
3030         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
3031
3032         if (ssid == NULL)
3033                 return;
3034
3035         for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
3036                 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer,
3037                               ETH_ALEN) == 0)
3038                         break;
3039         }
3040         if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) {
3041                 if (ssid->mode != WPAS_MODE_P2P_GO &&
3042                     os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
3043                         wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
3044                                    "due to invitation result", ssid->id);
3045                         wpas_notify_network_removed(wpa_s, ssid);
3046                         wpa_config_remove_network(wpa_s->conf, ssid->id);
3047                         return;
3048                 }
3049                 return; /* Peer not found in client list */
3050         }
3051
3052         wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
3053                    "group %d client list%s",
3054                    MAC2STR(peer), ssid->id,
3055                    inv ? " due to invitation result" : "");
3056         os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN,
3057                    ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3058                    (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3059         ssid->num_p2p_clients--;
3060         if (p2p_wpa_s->conf->update_config &&
3061             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
3062                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
3063 }
3064
3065
3066 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
3067                                           const u8 *peer)
3068 {
3069         struct wpa_ssid *ssid;
3070
3071         wpa_s = wpa_s->global->p2p_invite_group;
3072         if (wpa_s == NULL)
3073                 return; /* No known invitation group */
3074         ssid = wpa_s->current_ssid;
3075         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
3076             !ssid->p2p_persistent_group)
3077                 return; /* Not operating as a GO in persistent group */
3078         ssid = wpas_p2p_get_persistent(wpa_s->parent, peer,
3079                                        ssid->ssid, ssid->ssid_len);
3080         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3081 }
3082
3083
3084 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
3085                                    const struct p2p_channels *channels,
3086                                    const u8 *peer, int neg_freq,
3087                                    int peer_oper_freq)
3088 {
3089         struct wpa_supplicant *wpa_s = ctx;
3090         struct wpa_ssid *ssid;
3091         int freq;
3092
3093         if (bssid) {
3094                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3095                                "status=%d " MACSTR,
3096                                status, MAC2STR(bssid));
3097         } else {
3098                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3099                                "status=%d ", status);
3100         }
3101         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
3102
3103         wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
3104                    status, MAC2STR(peer));
3105         if (wpa_s->pending_invite_ssid_id == -1) {
3106                 struct wpa_supplicant *group_if =
3107                         wpa_s->global->p2p_invite_group;
3108
3109                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
3110                         wpas_remove_persistent_client(wpa_s, peer);
3111
3112                 /*
3113                  * Invitation to an active group. If this is successful and we
3114                  * are the GO, set the client wait to postpone some concurrent
3115                  * operations and to allow provisioning and connection to happen
3116                  * more quickly.
3117                  */
3118                 if (status == P2P_SC_SUCCESS &&
3119                     group_if && group_if->current_ssid &&
3120                     group_if->current_ssid->mode == WPAS_MODE_P2P_GO) {
3121                         os_get_reltime(&wpa_s->global->p2p_go_wait_client);
3122 #ifdef CONFIG_TESTING_OPTIONS
3123                         if (group_if->p2p_go_csa_on_inv) {
3124                                 wpa_printf(MSG_DEBUG,
3125                                            "Testing: force P2P GO CSA after invitation");
3126                                 eloop_cancel_timeout(
3127                                         wpas_p2p_reconsider_moving_go,
3128                                         wpa_s, NULL);
3129                                 eloop_register_timeout(
3130                                         0, 50000,
3131                                         wpas_p2p_reconsider_moving_go,
3132                                         wpa_s, NULL);
3133                         }
3134 #endif /* CONFIG_TESTING_OPTIONS */
3135                 }
3136                 return;
3137         }
3138
3139         if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3140                 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
3141                            "invitation exchange to indicate readiness for "
3142                            "re-invocation");
3143         }
3144
3145         if (status != P2P_SC_SUCCESS) {
3146                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
3147                         ssid = wpa_config_get_network(
3148                                 wpa_s->conf, wpa_s->pending_invite_ssid_id);
3149                         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3150                 }
3151                 wpas_p2p_remove_pending_group_interface(wpa_s);
3152                 return;
3153         }
3154
3155         ssid = wpa_config_get_network(wpa_s->conf,
3156                                       wpa_s->pending_invite_ssid_id);
3157         if (ssid == NULL) {
3158                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
3159                            "data matching with invitation");
3160                 return;
3161         }
3162
3163         /*
3164          * The peer could have missed our ctrl::ack frame for Invitation
3165          * Response and continue retransmitting the frame. To reduce the
3166          * likelihood of the peer not getting successful TX status for the
3167          * Invitation Response frame, wait a short time here before starting
3168          * the persistent group so that we will remain on the current channel to
3169          * acknowledge any possible retransmission from the peer.
3170          */
3171         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
3172                 "starting persistent group");
3173         os_sleep(0, 50000);
3174
3175         if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
3176             freq_included(wpa_s, channels, neg_freq))
3177                 freq = neg_freq;
3178         else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
3179                  freq_included(wpa_s, channels, peer_oper_freq))
3180                 freq = peer_oper_freq;
3181         else
3182                 freq = 0;
3183
3184         wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
3185                    freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
3186         wpas_p2p_group_add_persistent(wpa_s, ssid,
3187                                       ssid->mode == WPAS_MODE_P2P_GO,
3188                                       wpa_s->p2p_persistent_go_freq,
3189                                       freq,
3190                                       wpa_s->p2p_go_vht_center_freq2,
3191                                       wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
3192                                       wpa_s->p2p_go_max_oper_chwidth,
3193                                       channels,
3194                                       ssid->mode == WPAS_MODE_P2P_GO ?
3195                                       P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3196                                       0, 1);
3197 }
3198
3199
3200 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
3201                                     unsigned int freq)
3202 {
3203         if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
3204                 return 1;
3205         return freq_range_list_includes(&global->p2p_disallow_freq, freq);
3206 }
3207
3208
3209 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
3210 {
3211         reg->channel[reg->channels] = chan;
3212         reg->channels++;
3213 }
3214
3215
3216 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3217                                      struct p2p_channels *chan,
3218                                      struct p2p_channels *cli_chan)
3219 {
3220         int i, cla = 0;
3221
3222         wpa_s->global->p2p_24ghz_social_channels = 1;
3223
3224         os_memset(cli_chan, 0, sizeof(*cli_chan));
3225
3226         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3227                    "band");
3228
3229         /* Operating class 81 - 2.4 GHz band channels 1..13 */
3230         chan->reg_class[cla].reg_class = 81;
3231         chan->reg_class[cla].channels = 0;
3232         for (i = 0; i < 11; i++) {
3233                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3234                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3235         }
3236         if (chan->reg_class[cla].channels)
3237                 cla++;
3238
3239         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3240                    "band");
3241
3242         /* Operating class 115 - 5 GHz, channels 36-48 */
3243         chan->reg_class[cla].reg_class = 115;
3244         chan->reg_class[cla].channels = 0;
3245         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3246                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3247         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3248                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3249         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3250                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3251         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3252                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3253         if (chan->reg_class[cla].channels)
3254                 cla++;
3255
3256         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3257                    "band");
3258
3259         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3260         chan->reg_class[cla].reg_class = 124;
3261         chan->reg_class[cla].channels = 0;
3262         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3263                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3264         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3265                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3266         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3267                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3268         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3269                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3270         if (chan->reg_class[cla].channels)
3271                 cla++;
3272
3273         chan->reg_classes = cla;
3274         return 0;
3275 }
3276
3277
3278 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
3279                                           u16 num_modes,
3280                                           enum hostapd_hw_mode mode)
3281 {
3282         u16 i;
3283
3284         for (i = 0; i < num_modes; i++) {
3285                 if (modes[i].mode == mode)
3286                         return &modes[i];
3287         }
3288
3289         return NULL;
3290 }
3291
3292
3293 enum chan_allowed {
3294         NOT_ALLOWED, NO_IR, ALLOWED
3295 };
3296
3297 static int has_channel(struct wpa_global *global,
3298                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
3299 {
3300         int i;
3301         unsigned int freq;
3302
3303         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3304                 chan * 5;
3305         if (wpas_p2p_disallowed_freq(global, freq))
3306                 return NOT_ALLOWED;
3307
3308         for (i = 0; i < mode->num_channels; i++) {
3309                 if (mode->channels[i].chan == chan) {
3310                         if (flags)
3311                                 *flags = mode->channels[i].flag;
3312                         if (mode->channels[i].flag &
3313                             (HOSTAPD_CHAN_DISABLED |
3314                              HOSTAPD_CHAN_RADAR))
3315                                 return NOT_ALLOWED;
3316                         if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR)
3317                                 return NO_IR;
3318                         return ALLOWED;
3319                 }
3320         }
3321
3322         return NOT_ALLOWED;
3323 }
3324
3325
3326 struct p2p_oper_class_map {
3327         enum hostapd_hw_mode mode;
3328         u8 op_class;
3329         u8 min_chan;
3330         u8 max_chan;
3331         u8 inc;
3332         enum { BW20, BW40PLUS, BW40MINUS, BW80, BW2160, BW160, BW80P80 } bw;
3333 };
3334
3335 static const struct p2p_oper_class_map op_class[] = {
3336         { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
3337 #if 0 /* Do not enable HT40 on 2 GHz for now */
3338         { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
3339         { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
3340 #endif
3341         { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
3342         { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
3343         { HOSTAPD_MODE_IEEE80211A, 125, 149, 169, 4, BW20 },
3344         { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
3345         { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
3346         { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
3347         { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
3348
3349         /*
3350          * IEEE P802.11ac/D7.0 Table E-4 actually talks about channel center
3351          * frequency index 42, 58, 106, 122, 138, 155 with channel spacing of
3352          * 80 MHz, but currently use the following definition for simplicity
3353          * (these center frequencies are not actual channels, which makes
3354          * has_channel() fail). wpas_p2p_verify_80mhz() should take care of
3355          * removing invalid channels.
3356          */
3357         { HOSTAPD_MODE_IEEE80211A, 128, 36, 161, 4, BW80 },
3358         { HOSTAPD_MODE_IEEE80211A, 130, 36, 161, 4, BW80P80 },
3359         { HOSTAPD_MODE_IEEE80211A, 129, 50, 114, 16, BW160 },
3360         { HOSTAPD_MODE_IEEE80211AD, 180, 1, 4, 1, BW2160 },
3361         { -1, 0, 0, 0, 0, BW20 }
3362 };
3363
3364
3365 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3366                                      struct hostapd_hw_modes *mode,
3367                                      u8 channel)
3368 {
3369         u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3370         unsigned int i;
3371
3372         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3373                 return 0;
3374
3375         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3376                 /*
3377                  * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3378                  * so the center channel is 6 channels away from the start/end.
3379                  */
3380                 if (channel >= center_channels[i] - 6 &&
3381                     channel <= center_channels[i] + 6)
3382                         return center_channels[i];
3383
3384         return 0;
3385 }
3386
3387
3388 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3389                                                struct hostapd_hw_modes *mode,
3390                                                u8 channel, u8 bw)
3391 {
3392         u8 center_chan;
3393         int i, flags;
3394         enum chan_allowed res, ret = ALLOWED;
3395
3396         center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3397         if (!center_chan)
3398                 return NOT_ALLOWED;
3399         if (center_chan >= 58 && center_chan <= 138)
3400                 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3401
3402         /* check all the channels are available */
3403         for (i = 0; i < 4; i++) {
3404                 int adj_chan = center_chan - 6 + i * 4;
3405
3406                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3407                 if (res == NOT_ALLOWED)
3408                         return NOT_ALLOWED;
3409                 if (res == NO_IR)
3410                         ret = NO_IR;
3411
3412                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3413                         return NOT_ALLOWED;
3414                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3415                         return NOT_ALLOWED;
3416                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3417                         return NOT_ALLOWED;
3418                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3419                         return NOT_ALLOWED;
3420         }
3421
3422         return ret;
3423 }
3424
3425
3426 static int wpas_p2p_get_center_160mhz(struct wpa_supplicant *wpa_s,
3427                                      struct hostapd_hw_modes *mode,
3428                                      u8 channel)
3429 {
3430         u8 center_channels[] = { 50, 114 };
3431         unsigned int i;
3432
3433         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3434                 return 0;
3435
3436         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3437                 /*
3438                  * In 160 MHz, the bandwidth "spans" 28 channels (e.g., 36-64),
3439                  * so the center channel is 14 channels away from the start/end.
3440                  */
3441                 if (channel >= center_channels[i] - 14 &&
3442                     channel <= center_channels[i] + 14)
3443                         return center_channels[i];
3444
3445         return 0;
3446 }
3447
3448
3449 static enum chan_allowed wpas_p2p_verify_160mhz(struct wpa_supplicant *wpa_s,
3450                                                struct hostapd_hw_modes *mode,
3451                                                u8 channel, u8 bw)
3452 {
3453         u8 center_chan;
3454         int i, flags;
3455         enum chan_allowed res, ret = ALLOWED;
3456
3457         center_chan = wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3458         if (!center_chan)
3459                 return NOT_ALLOWED;
3460         /* VHT 160 MHz uses DFS channels in most countries. */
3461
3462         /* Check all the channels are available */
3463         for (i = 0; i < 8; i++) {
3464                 int adj_chan = center_chan - 14 + i * 4;
3465
3466                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3467                 if (res == NOT_ALLOWED)
3468                         return NOT_ALLOWED;
3469
3470                 if (res == NO_IR)
3471                         ret = NO_IR;
3472
3473                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_150))
3474                         return NOT_ALLOWED;
3475                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_130))
3476                         return NOT_ALLOWED;
3477                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_110))
3478                         return NOT_ALLOWED;
3479                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_90))
3480                         return NOT_ALLOWED;
3481                 if (i == 4 && !(flags & HOSTAPD_CHAN_VHT_90_70))
3482                         return NOT_ALLOWED;
3483                 if (i == 5 && !(flags & HOSTAPD_CHAN_VHT_110_50))
3484                         return NOT_ALLOWED;
3485                 if (i == 6 && !(flags & HOSTAPD_CHAN_VHT_130_30))
3486                         return NOT_ALLOWED;
3487                 if (i == 7 && !(flags & HOSTAPD_CHAN_VHT_150_10))
3488                         return NOT_ALLOWED;
3489         }
3490
3491         return ret;
3492 }
3493
3494
3495 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3496                                                  struct hostapd_hw_modes *mode,
3497                                                  u8 channel, u8 bw)
3498 {
3499         int flag = 0;
3500         enum chan_allowed res, res2;
3501
3502         res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3503         if (bw == BW40MINUS) {
3504                 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3505                         return NOT_ALLOWED;
3506                 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3507         } else if (bw == BW40PLUS) {
3508                 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3509                         return NOT_ALLOWED;
3510                 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3511         } else if (bw == BW80) {
3512                 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3513         } else if (bw == BW160) {
3514                 res2 = wpas_p2p_verify_160mhz(wpa_s, mode, channel, bw);
3515         }
3516
3517         if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3518                 return NOT_ALLOWED;
3519         if (res == NO_IR || res2 == NO_IR)
3520                 return NO_IR;
3521         return res;
3522 }
3523
3524
3525 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3526                                    struct p2p_channels *chan,
3527                                    struct p2p_channels *cli_chan)
3528 {
3529         struct hostapd_hw_modes *mode;
3530         int cla, op, cli_cla;
3531
3532         if (wpa_s->hw.modes == NULL) {
3533                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3534                            "of all supported channels; assume dualband "
3535                            "support");
3536                 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3537         }
3538
3539         cla = cli_cla = 0;
3540
3541         for (op = 0; op_class[op].op_class; op++) {
3542                 const struct p2p_oper_class_map *o = &op_class[op];
3543                 u8 ch;
3544                 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3545
3546                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3547                 if (mode == NULL)
3548                         continue;
3549                 if (mode->mode == HOSTAPD_MODE_IEEE80211G)
3550                         wpa_s->global->p2p_24ghz_social_channels = 1;
3551                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3552                         enum chan_allowed res;
3553                         res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3554                         if (res == ALLOWED) {
3555                                 if (reg == NULL) {
3556                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3557                                                    o->op_class);
3558                                         reg = &chan->reg_class[cla];
3559                                         cla++;
3560                                         reg->reg_class = o->op_class;
3561                                 }
3562                                 reg->channel[reg->channels] = ch;
3563                                 reg->channels++;
3564                         } else if (res == NO_IR &&
3565                                    wpa_s->conf->p2p_add_cli_chan) {
3566                                 if (cli_reg == NULL) {
3567                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3568                                                    o->op_class);
3569                                         cli_reg = &cli_chan->reg_class[cli_cla];
3570                                         cli_cla++;
3571                                         cli_reg->reg_class = o->op_class;
3572                                 }
3573                                 cli_reg->channel[cli_reg->channels] = ch;
3574                                 cli_reg->channels++;
3575                         }
3576                 }
3577                 if (reg) {
3578                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3579                                     reg->channel, reg->channels);
3580                 }
3581                 if (cli_reg) {
3582                         wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3583                                     cli_reg->channel, cli_reg->channels);
3584                 }
3585         }
3586
3587         chan->reg_classes = cla;
3588         cli_chan->reg_classes = cli_cla;
3589
3590         return 0;
3591 }
3592
3593
3594 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3595                            struct hostapd_hw_modes *mode, u8 channel)
3596 {
3597         int op;
3598         enum chan_allowed ret;
3599
3600         for (op = 0; op_class[op].op_class; op++) {
3601                 const struct p2p_oper_class_map *o = &op_class[op];
3602                 u8 ch;
3603
3604                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3605                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3606                             (o->bw != BW40PLUS && o->bw != BW40MINUS) ||
3607                             ch != channel)
3608                                 continue;
3609                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3610                         if (ret == ALLOWED)
3611                                 return (o->bw == BW40MINUS) ? -1 : 1;
3612                 }
3613         }
3614         return 0;
3615 }
3616
3617
3618 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3619                               struct hostapd_hw_modes *mode, u8 channel)
3620 {
3621         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3622                 return 0;
3623
3624         return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3625 }
3626
3627
3628 int wpas_p2p_get_vht160_center(struct wpa_supplicant *wpa_s,
3629                                struct hostapd_hw_modes *mode, u8 channel)
3630 {
3631         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW160))
3632                 return 0;
3633         return wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3634 }
3635
3636
3637 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3638                         size_t buf_len)
3639 {
3640         struct wpa_supplicant *wpa_s = ctx;
3641
3642         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3643                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3644                         break;
3645         }
3646         if (wpa_s == NULL)
3647                 return -1;
3648
3649         return wpa_drv_get_noa(wpa_s, buf, buf_len);
3650 }
3651
3652
3653 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s,
3654                                               const u8 *ssid, size_t ssid_len)
3655 {
3656         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3657                 struct wpa_ssid *s = wpa_s->current_ssid;
3658                 if (s == NULL)
3659                         continue;
3660                 if (s->mode != WPAS_MODE_P2P_GO &&
3661                     s->mode != WPAS_MODE_AP &&
3662                     s->mode != WPAS_MODE_P2P_GROUP_FORMATION)
3663                         continue;
3664                 if (s->ssid_len != ssid_len ||
3665                     os_memcmp(ssid, s->ssid, ssid_len) != 0)
3666                         continue;
3667                 return wpa_s;
3668         }
3669
3670         return NULL;
3671
3672 }
3673
3674
3675 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s,
3676                                                   const u8 *peer_dev_addr)
3677 {
3678         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3679                 struct wpa_ssid *ssid = wpa_s->current_ssid;
3680                 if (ssid && (ssid->mode != WPAS_MODE_INFRA || !ssid->p2p_group))
3681                         continue;
3682                 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0)
3683                         return wpa_s;
3684         }
3685
3686         return NULL;
3687 }
3688
3689
3690 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3691 {
3692         struct wpa_supplicant *wpa_s = ctx;
3693
3694         return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL;
3695 }
3696
3697
3698 static int wpas_is_concurrent_session_active(void *ctx)
3699 {
3700         struct wpa_supplicant *wpa_s = ctx;
3701         struct wpa_supplicant *ifs;
3702
3703         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3704                 if (ifs == wpa_s)
3705                         continue;
3706                 if (ifs->wpa_state > WPA_ASSOCIATED)
3707                         return 1;
3708         }
3709         return 0;
3710 }
3711
3712
3713 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3714 {
3715         struct wpa_supplicant *wpa_s = ctx;
3716         wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3717 }
3718
3719
3720 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s,
3721                                   const char *conf_p2p_dev)
3722 {
3723         struct wpa_interface iface;
3724         struct wpa_supplicant *p2pdev_wpa_s;
3725         char ifname[100];
3726         char force_name[100];
3727         int ret;
3728
3729         ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3730                           wpa_s->ifname);
3731         if (os_snprintf_error(sizeof(ifname), ret))
3732                 return -1;
3733         force_name[0] = '\0';
3734         wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3735         ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3736                              force_name, wpa_s->pending_interface_addr, NULL);
3737         if (ret < 0) {
3738                 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3739                 return ret;
3740         }
3741         os_strlcpy(wpa_s->pending_interface_name, ifname,
3742                    sizeof(wpa_s->pending_interface_name));
3743
3744         os_memset(&iface, 0, sizeof(iface));
3745         iface.p2p_mgmt = 1;
3746         iface.ifname = wpa_s->pending_interface_name;
3747         iface.driver = wpa_s->driver->name;
3748         iface.driver_param = wpa_s->conf->driver_param;
3749
3750         /*
3751          * If a P2P Device configuration file was given, use it as the interface
3752          * configuration file (instead of using parent's configuration file.
3753          */
3754         if (conf_p2p_dev) {
3755                 iface.confname = conf_p2p_dev;
3756                 iface.ctrl_interface = NULL;
3757         } else {
3758                 iface.confname = wpa_s->confname;
3759                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3760         }
3761
3762         p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
3763         if (!p2pdev_wpa_s) {
3764                 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3765                 return -1;
3766         }
3767
3768         wpa_s->pending_interface_name[0] = '\0';
3769         return 0;
3770 }
3771
3772
3773 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3774                                const u8 *noa, size_t noa_len)
3775 {
3776         struct wpa_supplicant *wpa_s, *intf = ctx;
3777         char hex[100];
3778
3779         for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3780                 if (wpa_s->waiting_presence_resp)
3781                         break;
3782         }
3783         if (!wpa_s) {
3784                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3785                 return;
3786         }
3787         wpa_s->waiting_presence_resp = 0;
3788
3789         wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3790         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3791                 " status=%u noa=%s", MAC2STR(src), status, hex);
3792 }
3793
3794
3795 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid,
3796                                      size_t ssid_len, u8 *go_dev_addr,
3797                                      u8 *ret_ssid, size_t *ret_ssid_len,
3798                                      u8 *intended_iface_addr)
3799 {
3800         struct wpa_supplicant *wpa_s = ctx;
3801         struct wpa_ssid *s;
3802
3803         s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len);
3804         if (s) {
3805                 os_memcpy(ret_ssid, s->ssid, s->ssid_len);
3806                 *ret_ssid_len = s->ssid_len;
3807                 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN);
3808
3809                 if (s->mode != WPAS_MODE_P2P_GO) {
3810                         os_memset(intended_iface_addr, 0, ETH_ALEN);
3811                 } else if (wpas_p2p_create_iface(wpa_s)) {
3812                         if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO))
3813                                 return 0;
3814
3815                         os_memcpy(intended_iface_addr,
3816                                   wpa_s->pending_interface_addr, ETH_ALEN);
3817                 } else {
3818                         os_memcpy(intended_iface_addr, wpa_s->own_addr,
3819                                   ETH_ALEN);
3820                 }
3821                 return 1;
3822         }
3823
3824         return 0;
3825 }
3826
3827
3828 static int wpas_get_go_info(void *ctx, u8 *intended_addr,
3829                             u8 *ssid, size_t *ssid_len, int *group_iface,
3830                             unsigned int *freq)
3831 {
3832         struct wpa_supplicant *wpa_s = ctx;
3833         struct wpa_supplicant *go;
3834         struct wpa_ssid *s;
3835
3836         /*
3837          * group_iface will be set to 1 only if a dedicated interface for P2P
3838          * role is required. First, we try to reuse an active GO. However,
3839          * if it is not present, we will try to reactivate an existing
3840          * persistent group and set group_iface to 1, so the caller will know
3841          * that the pending interface should be used.
3842          */
3843         *group_iface = 0;
3844
3845         if (freq)
3846                 *freq = 0;
3847
3848         go = wpas_p2p_get_go_group(wpa_s);
3849         if (!go) {
3850                 s = wpas_p2p_get_persistent_go(wpa_s);
3851                 *group_iface = wpas_p2p_create_iface(wpa_s);
3852                 if (s)
3853                         os_memcpy(intended_addr, s->bssid, ETH_ALEN);
3854                 else
3855                         return 0;
3856         } else {
3857                 s = go->current_ssid;
3858                 os_memcpy(intended_addr, go->own_addr, ETH_ALEN);
3859                 if (freq)
3860                         *freq = go->assoc_freq;
3861         }
3862
3863         os_memcpy(ssid, s->ssid, s->ssid_len);
3864         *ssid_len = s->ssid_len;
3865
3866         return 1;
3867 }
3868
3869
3870 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go,
3871                                     const u8 *ssid, size_t ssid_len)
3872 {
3873         struct wpa_supplicant *wpa_s = ctx;
3874         struct wpa_ssid *s;
3875         int save_config = 0;
3876         size_t i;
3877
3878         /* Start with our first choice of Persistent Groups */
3879         while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) {
3880                 if (go && ssid && ssid_len &&
3881                     s->ssid_len == ssid_len &&
3882                     os_memcmp(go, s->bssid, ETH_ALEN) == 0 &&
3883                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3884                         break;
3885
3886                 /* Remove stale persistent group */
3887                 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) {
3888                         wpa_config_remove_network(wpa_s->conf, s->id);
3889                         save_config = 1;
3890                         continue;
3891                 }
3892
3893                 for (i = 0; i < s->num_p2p_clients; i++) {
3894                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
3895                                       peer, ETH_ALEN) != 0)
3896                                 continue;
3897
3898                         os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
3899                                    s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3900                                    (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3901                         break;
3902                 }
3903                 s->num_p2p_clients--;
3904                 save_config = 1;
3905         }
3906
3907         if (save_config)
3908                 p2p_config_write(wpa_s);
3909
3910         /* Return TRUE if valid SSID remains */
3911         return s != NULL;
3912 }
3913
3914
3915 static void wpas_p2ps_get_feat_cap_str(char *buf, size_t buf_len,
3916                                        const u8 *feat_cap, size_t feat_cap_len)
3917 {
3918         static const char pref[] = " feature_cap=";
3919         int ret;
3920
3921         buf[0] = '\0';
3922
3923         /*
3924          * We expect a feature capability to contain at least one byte to be
3925          * reported. The string buffer provided by the caller function is
3926          * expected to be big enough to contain all bytes of the attribute for
3927          * known specifications. This function truncates the reported bytes if
3928          * the feature capability data exceeds the string buffer size.
3929          */
3930         if (!feat_cap || !feat_cap_len || buf_len < sizeof(pref) + 2)
3931                 return;
3932
3933         os_memcpy(buf, pref, sizeof(pref));
3934         ret = wpa_snprintf_hex(&buf[sizeof(pref) - 1],
3935                                buf_len - sizeof(pref) + 1,
3936                                feat_cap, feat_cap_len);
3937
3938         if (ret != (2 * (int) feat_cap_len))
3939                 wpa_printf(MSG_WARNING, "P2PS feature_cap bytes truncated");
3940 }
3941
3942
3943 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev,
3944                                     const u8 *adv_mac, const u8 *ses_mac,
3945                                     const u8 *grp_mac, u32 adv_id, u32 ses_id,
3946                                     u8 conncap, int passwd_id,
3947                                     const u8 *persist_ssid,
3948                                     size_t persist_ssid_size, int response_done,
3949                                     int prov_start, const char *session_info,
3950                                     const u8 *feat_cap, size_t feat_cap_len,
3951                                     unsigned int freq)
3952 {
3953         struct wpa_supplicant *wpa_s = ctx;
3954         u8 mac[ETH_ALEN];
3955         struct wpa_ssid *persistent_go, *stale, *s = NULL;
3956         int save_config = 0;
3957         struct wpa_supplicant *go_wpa_s;
3958         char feat_cap_str[256];
3959
3960         if (!dev)
3961                 return;
3962
3963         os_memset(mac, 0, ETH_ALEN);
3964         if (!adv_mac)
3965                 adv_mac = mac;
3966         if (!ses_mac)
3967                 ses_mac = mac;
3968         if (!grp_mac)
3969                 grp_mac = mac;
3970
3971         wpas_p2ps_get_feat_cap_str(feat_cap_str, sizeof(feat_cap_str),
3972                                    feat_cap, feat_cap_len);
3973
3974         if (prov_start) {
3975                 if (session_info == NULL) {
3976                         wpa_msg_global(wpa_s, MSG_INFO,
3977                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3978                                        " adv_id=%x conncap=%x"
3979                                        " adv_mac=" MACSTR
3980                                        " session=%x mac=" MACSTR
3981                                        " dev_passwd_id=%d%s",
3982                                        MAC2STR(dev), adv_id, conncap,
3983                                        MAC2STR(adv_mac),
3984                                        ses_id, MAC2STR(ses_mac),
3985                                        passwd_id, feat_cap_str);
3986                 } else {
3987                         wpa_msg_global(wpa_s, MSG_INFO,
3988                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3989                                        " adv_id=%x conncap=%x"
3990                                        " adv_mac=" MACSTR
3991                                        " session=%x mac=" MACSTR
3992                                        " dev_passwd_id=%d info='%s'%s",
3993                                        MAC2STR(dev), adv_id, conncap,
3994                                        MAC2STR(adv_mac),
3995                                        ses_id, MAC2STR(ses_mac),
3996                                        passwd_id, session_info, feat_cap_str);
3997                 }
3998                 return;
3999         }
4000
4001         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
4002         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4003
4004         if (status && status != P2P_SC_SUCCESS_DEFERRED) {
4005                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4006                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4007
4008                 if (persistent_go && !persistent_go->num_p2p_clients) {
4009                         /* remove empty persistent GO */
4010                         wpa_config_remove_network(wpa_s->conf,
4011                                                   persistent_go->id);
4012                 }
4013
4014                 wpa_msg_global(wpa_s, MSG_INFO,
4015                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4016                                " status=%d"
4017                                " adv_id=%x adv_mac=" MACSTR
4018                                " session=%x mac=" MACSTR "%s",
4019                                MAC2STR(dev), status,
4020                                adv_id, MAC2STR(adv_mac),
4021                                ses_id, MAC2STR(ses_mac), feat_cap_str);
4022                 return;
4023         }
4024
4025         /* Clean up stale persistent groups with this device */
4026         if (persist_ssid && persist_ssid_size)
4027                 s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid,
4028                                             persist_ssid_size);
4029
4030         if (persist_ssid && s && s->mode != WPAS_MODE_P2P_GO &&
4031             is_zero_ether_addr(grp_mac)) {
4032                 wpa_dbg(wpa_s, MSG_ERROR,
4033                         "P2P: Peer device is a GO in a persistent group, but it did not provide the intended MAC address");
4034                 return;
4035         }
4036
4037         for (;;) {
4038                 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0);
4039                 if (!stale)
4040                         break;
4041
4042                 if (s && s->ssid_len == stale->ssid_len &&
4043                     os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 &&
4044                     os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0)
4045                         break;
4046
4047                 /* Remove stale persistent group */
4048                 if (stale->mode != WPAS_MODE_P2P_GO ||
4049                     stale->num_p2p_clients <= 1) {
4050                         wpa_config_remove_network(wpa_s->conf, stale->id);
4051                 } else {
4052                         size_t i;
4053
4054                         for (i = 0; i < stale->num_p2p_clients; i++) {
4055                                 if (os_memcmp(stale->p2p_client_list +
4056                                               i * ETH_ALEN,
4057                                               dev, ETH_ALEN) == 0) {
4058                                         os_memmove(stale->p2p_client_list +
4059                                                    i * ETH_ALEN,
4060                                                    stale->p2p_client_list +
4061                                                    (i + 1) * ETH_ALEN,
4062                                                    (stale->num_p2p_clients -
4063                                                     i - 1) * ETH_ALEN);
4064                                         break;
4065                                 }
4066                         }
4067                         stale->num_p2p_clients--;
4068                 }
4069                 save_config = 1;
4070         }
4071
4072         if (save_config)
4073                 p2p_config_write(wpa_s);
4074
4075         if (s) {
4076                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4077                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4078
4079                 if (persistent_go && s != persistent_go &&
4080                     !persistent_go->num_p2p_clients) {
4081                         /* remove empty persistent GO */
4082                         wpa_config_remove_network(wpa_s->conf,
4083                                                   persistent_go->id);
4084                         /* Save config */
4085                 }
4086
4087                 wpa_msg_global(wpa_s, MSG_INFO,
4088                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4089                                " status=%d"
4090                                " adv_id=%x adv_mac=" MACSTR
4091                                " session=%x mac=" MACSTR
4092                                " persist=%d%s",
4093                                MAC2STR(dev), status,
4094                                adv_id, MAC2STR(adv_mac),
4095                                ses_id, MAC2STR(ses_mac), s->id, feat_cap_str);
4096                 return;
4097         }
4098
4099         if (conncap == P2PS_SETUP_GROUP_OWNER) {
4100                 /*
4101                  * We need to copy the interface name. Simply saving a
4102                  * pointer isn't enough, since if we use pending_interface_name
4103                  * it will be overwritten when the group is added.
4104                  */
4105                 char go_ifname[100];
4106
4107                 go_ifname[0] = '\0';
4108                 if (!go_wpa_s) {
4109                         wpa_s->global->pending_p2ps_group = 1;
4110                         wpa_s->global->pending_p2ps_group_freq = freq;
4111
4112                         if (!wpas_p2p_create_iface(wpa_s))
4113                                 os_memcpy(go_ifname, wpa_s->ifname,
4114                                           sizeof(go_ifname));
4115                         else if (wpa_s->pending_interface_name[0])
4116                                 os_memcpy(go_ifname,
4117                                           wpa_s->pending_interface_name,
4118                                           sizeof(go_ifname));
4119
4120                         if (!go_ifname[0]) {
4121                                 wpas_p2ps_prov_complete(
4122                                         wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP,
4123                                         dev, adv_mac, ses_mac,
4124                                         grp_mac, adv_id, ses_id, 0, 0,
4125                                         NULL, 0, 0, 0, NULL, NULL, 0, 0);
4126                                 return;
4127                         }
4128
4129                         /* If PD Resp complete, start up the GO */
4130                         if (response_done && persistent_go) {
4131                                 wpas_p2p_group_add_persistent(
4132                                         wpa_s, persistent_go,
4133                                         0, 0, freq, 0, 0, 0, 0, NULL,
4134                                         persistent_go->mode ==
4135                                         WPAS_MODE_P2P_GO ?
4136                                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
4137                                         0, 0);
4138                         } else if (response_done) {
4139                                 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0);
4140                         }
4141
4142                         if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4143                                 os_memcpy(wpa_s->p2ps_join_addr, grp_mac,
4144                                           ETH_ALEN);
4145                                 wpa_s->p2ps_method_config_any = 1;
4146                         }
4147                 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4148                         os_memcpy(go_ifname, go_wpa_s->ifname,
4149                                   sizeof(go_ifname));
4150
4151                         if (is_zero_ether_addr(grp_mac)) {
4152                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
4153                                         "P2P: Setting PIN-1 for ANY");
4154                                 wpa_supplicant_ap_wps_pin(go_wpa_s, NULL,
4155                                                           "12345670", NULL, 0,
4156                                                           0);
4157                         } else {
4158                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
4159                                         "P2P: Setting PIN-1 for " MACSTR,
4160                                         MAC2STR(grp_mac));
4161                                 wpa_supplicant_ap_wps_pin(go_wpa_s, grp_mac,
4162                                                           "12345670", NULL, 0,
4163                                                           0);
4164                         }
4165
4166                         os_memcpy(wpa_s->p2ps_join_addr, grp_mac, ETH_ALEN);
4167                         wpa_s->p2ps_method_config_any = 1;
4168                 }
4169
4170                 wpa_msg_global(wpa_s, MSG_INFO,
4171                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4172                                " status=%d conncap=%x"
4173                                " adv_id=%x adv_mac=" MACSTR
4174                                " session=%x mac=" MACSTR
4175                                " dev_passwd_id=%d go=%s%s",
4176                                MAC2STR(dev), status, conncap,
4177                                adv_id, MAC2STR(adv_mac),
4178                                ses_id, MAC2STR(ses_mac),
4179                                passwd_id, go_ifname, feat_cap_str);
4180                 return;
4181         }
4182
4183         if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4184                 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4185
4186         if (persistent_go && !persistent_go->num_p2p_clients) {
4187                 /* remove empty persistent GO */
4188                 wpa_config_remove_network(wpa_s->conf, persistent_go->id);
4189         }
4190
4191         if (conncap == P2PS_SETUP_CLIENT) {
4192                 wpa_msg_global(wpa_s, MSG_INFO,
4193                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4194                                " status=%d conncap=%x"
4195                                " adv_id=%x adv_mac=" MACSTR
4196                                " session=%x mac=" MACSTR
4197                                " dev_passwd_id=%d join=" MACSTR "%s",
4198                                MAC2STR(dev), status, conncap,
4199                                adv_id, MAC2STR(adv_mac),
4200                                ses_id, MAC2STR(ses_mac),
4201                                passwd_id, MAC2STR(grp_mac), feat_cap_str);
4202         } else {
4203                 wpa_msg_global(wpa_s, MSG_INFO,
4204                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4205                                " status=%d conncap=%x"
4206                                " adv_id=%x adv_mac=" MACSTR
4207                                " session=%x mac=" MACSTR
4208                                " dev_passwd_id=%d%s",
4209                                MAC2STR(dev), status, conncap,
4210                                adv_id, MAC2STR(adv_mac),
4211                                ses_id, MAC2STR(ses_mac),
4212                                passwd_id, feat_cap_str);
4213         }
4214 }
4215
4216
4217 static int _wpas_p2p_in_progress(void *ctx)
4218 {
4219         struct wpa_supplicant *wpa_s = ctx;
4220         return wpas_p2p_in_progress(wpa_s);
4221 }
4222
4223
4224 static int wpas_prov_disc_resp_cb(void *ctx)
4225 {
4226         struct wpa_supplicant *wpa_s = ctx;
4227         struct wpa_ssid *persistent_go;
4228         unsigned int freq;
4229
4230         if (!wpa_s->global->pending_p2ps_group)
4231                 return 0;
4232
4233         freq = wpa_s->global->pending_p2ps_group_freq;
4234         wpa_s->global->pending_p2ps_group_freq = 0;
4235         wpa_s->global->pending_p2ps_group = 0;
4236
4237         if (wpas_p2p_get_go_group(wpa_s))
4238                 return 0;
4239         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4240
4241         if (persistent_go) {
4242                 wpas_p2p_group_add_persistent(
4243                         wpa_s, persistent_go, 0, 0, 0, 0, 0, 0, 0, NULL,
4244                         persistent_go->mode == WPAS_MODE_P2P_GO ?
4245                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 0);
4246         } else {
4247                 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0);
4248         }
4249
4250         return 1;
4251 }
4252
4253
4254 static int wpas_p2p_get_pref_freq_list(void *ctx, int go,
4255                                        unsigned int *len,
4256                                        unsigned int *freq_list)
4257 {
4258         struct wpa_supplicant *wpa_s = ctx;
4259
4260         return wpa_drv_get_pref_freq_list(wpa_s, go ? WPA_IF_P2P_GO :
4261                                           WPA_IF_P2P_CLIENT, len, freq_list);
4262 }
4263
4264
4265 /**
4266  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
4267  * @global: Pointer to global data from wpa_supplicant_init()
4268  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4269  * Returns: 0 on success, -1 on failure
4270  */
4271 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
4272 {
4273         struct p2p_config p2p;
4274         int i;
4275
4276         if (wpa_s->conf->p2p_disabled)
4277                 return 0;
4278
4279         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
4280                 return 0;
4281
4282         if (global->p2p)
4283                 return 0;
4284
4285         os_memset(&p2p, 0, sizeof(p2p));
4286         p2p.cb_ctx = wpa_s;
4287         p2p.debug_print = wpas_p2p_debug_print;
4288         p2p.p2p_scan = wpas_p2p_scan;
4289         p2p.send_action = wpas_send_action;
4290         p2p.send_action_done = wpas_send_action_done;
4291         p2p.go_neg_completed = wpas_go_neg_completed;
4292         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
4293         p2p.dev_found = wpas_dev_found;
4294         p2p.dev_lost = wpas_dev_lost;
4295         p2p.find_stopped = wpas_find_stopped;
4296         p2p.start_listen = wpas_start_listen;
4297         p2p.stop_listen = wpas_stop_listen;
4298         p2p.send_probe_resp = wpas_send_probe_resp;
4299         p2p.sd_request = wpas_sd_request;
4300         p2p.sd_response = wpas_sd_response;
4301         p2p.prov_disc_req = wpas_prov_disc_req;
4302         p2p.prov_disc_resp = wpas_prov_disc_resp;
4303         p2p.prov_disc_fail = wpas_prov_disc_fail;
4304         p2p.invitation_process = wpas_invitation_process;
4305         p2p.invitation_received = wpas_invitation_received;
4306         p2p.invitation_result = wpas_invitation_result;
4307         p2p.get_noa = wpas_get_noa;
4308         p2p.go_connected = wpas_go_connected;
4309         p2p.presence_resp = wpas_presence_resp;
4310         p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
4311         p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
4312         p2p.get_persistent_group = wpas_get_persistent_group;
4313         p2p.get_go_info = wpas_get_go_info;
4314         p2p.remove_stale_groups = wpas_remove_stale_groups;
4315         p2p.p2ps_prov_complete = wpas_p2ps_prov_complete;
4316         p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb;
4317         p2p.p2ps_group_capability = p2ps_group_capability;
4318         p2p.get_pref_freq_list = wpas_p2p_get_pref_freq_list;
4319
4320         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
4321         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
4322         p2p.dev_name = wpa_s->conf->device_name;
4323         p2p.manufacturer = wpa_s->conf->manufacturer;
4324         p2p.model_name = wpa_s->conf->model_name;
4325         p2p.model_number = wpa_s->conf->model_number;
4326         p2p.serial_number = wpa_s->conf->serial_number;
4327         if (wpa_s->wps) {
4328                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
4329                 p2p.config_methods = wpa_s->wps->config_methods;
4330         }
4331
4332         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
4333                 wpa_printf(MSG_ERROR,
4334                            "P2P: Failed to configure supported channel list");
4335                 return -1;
4336         }
4337
4338         if (wpa_s->conf->p2p_listen_reg_class &&
4339             wpa_s->conf->p2p_listen_channel) {
4340                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
4341                 p2p.channel = wpa_s->conf->p2p_listen_channel;
4342                 p2p.channel_forced = 1;
4343         } else {
4344                 /*
4345                  * Pick one of the social channels randomly as the listen
4346                  * channel.
4347                  */
4348                 if (p2p_config_get_random_social(&p2p, &p2p.reg_class,
4349                                                  &p2p.channel) != 0) {
4350                         wpa_printf(MSG_INFO,
4351                                    "P2P: No social channels supported by the driver - do not enable P2P");
4352                         return 0;
4353                 }
4354                 p2p.channel_forced = 0;
4355         }
4356         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d",
4357                    p2p.reg_class, p2p.channel);
4358
4359         if (wpa_s->conf->p2p_oper_reg_class &&
4360             wpa_s->conf->p2p_oper_channel) {
4361                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4362                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
4363                 p2p.cfg_op_channel = 1;
4364                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
4365                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4366
4367         } else {
4368                 /*
4369                  * Use random operation channel from 2.4 GHz band social
4370                  * channels (1, 6, 11) or band 60 GHz social channel (2) if no
4371                  * other preference is indicated.
4372                  */
4373                 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class,
4374                                                  &p2p.op_channel) != 0) {
4375                         wpa_printf(MSG_ERROR,
4376                                    "P2P: Failed to select random social channel as operation channel");
4377                         return -1;
4378                 }
4379                 p2p.cfg_op_channel = 0;
4380                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
4381                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4382         }
4383
4384         if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
4385                 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
4386                 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
4387         }
4388
4389         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4390                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
4391                 p2p.country[2] = 0x04;
4392         } else
4393                 os_memcpy(p2p.country, "XX\x04", 3);
4394
4395         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
4396                   WPS_DEV_TYPE_LEN);
4397
4398         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
4399         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
4400                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
4401
4402         p2p.concurrent_operations = !!(wpa_s->drv_flags &
4403                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
4404
4405         p2p.max_peers = 100;
4406
4407         if (wpa_s->conf->p2p_ssid_postfix) {
4408                 p2p.ssid_postfix_len =
4409                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
4410                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
4411                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
4412                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
4413                           p2p.ssid_postfix_len);
4414         }
4415
4416         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
4417
4418         p2p.max_listen = wpa_s->max_remain_on_chan;
4419
4420         if (wpa_s->conf->p2p_passphrase_len >= 8 &&
4421             wpa_s->conf->p2p_passphrase_len <= 63)
4422                 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len;
4423         else
4424                 p2p.passphrase_len = 8;
4425
4426         global->p2p = p2p_init(&p2p);
4427         if (global->p2p == NULL)
4428                 return -1;
4429         global->p2p_init_wpa_s = wpa_s;
4430
4431         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4432                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4433                         continue;
4434                 p2p_add_wps_vendor_extension(
4435                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
4436         }
4437
4438         p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
4439
4440         return 0;
4441 }
4442
4443
4444 /**
4445  * wpas_p2p_deinit - Deinitialize per-interface P2P data
4446  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4447  *
4448  * This function deinitialize per-interface P2P data.
4449  */
4450 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
4451 {
4452         if (wpa_s->driver && wpa_s->drv_priv)
4453                 wpa_drv_probe_req_report(wpa_s, 0);
4454
4455         if (wpa_s->go_params) {
4456                 /* Clear any stored provisioning info */
4457                 p2p_clear_provisioning_info(
4458                         wpa_s->global->p2p,
4459                         wpa_s->go_params->peer_device_addr);
4460         }
4461
4462         os_free(wpa_s->go_params);
4463         wpa_s->go_params = NULL;
4464         eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
4465         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4466         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4467         wpa_s->p2p_long_listen = 0;
4468         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4469         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4470         wpas_p2p_remove_pending_group_interface(wpa_s);
4471         eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
4472         wpas_p2p_listen_work_done(wpa_s);
4473         if (wpa_s->p2p_send_action_work) {
4474                 os_free(wpa_s->p2p_send_action_work->ctx);
4475                 radio_work_done(wpa_s->p2p_send_action_work);
4476                 wpa_s->p2p_send_action_work = NULL;
4477         }
4478         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
4479
4480         wpabuf_free(wpa_s->p2p_oob_dev_pw);
4481         wpa_s->p2p_oob_dev_pw = NULL;
4482
4483         os_free(wpa_s->p2p_group_common_freqs);
4484         wpa_s->p2p_group_common_freqs = NULL;
4485         wpa_s->p2p_group_common_freqs_num = 0;
4486
4487         /* TODO: remove group interface from the driver if this wpa_s instance
4488          * is on top of a P2P group interface */
4489 }
4490
4491
4492 /**
4493  * wpas_p2p_deinit_global - Deinitialize global P2P module
4494  * @global: Pointer to global data from wpa_supplicant_init()
4495  *
4496  * This function deinitializes the global (per device) P2P module.
4497  */
4498 static void wpas_p2p_deinit_global(struct wpa_global *global)
4499 {
4500         struct wpa_supplicant *wpa_s, *tmp;
4501
4502         wpa_s = global->ifaces;
4503
4504         wpas_p2p_service_flush(global->p2p_init_wpa_s);
4505
4506         /* Remove remaining P2P group interfaces */
4507         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
4508                 wpa_s = wpa_s->next;
4509         while (wpa_s) {
4510                 tmp = global->ifaces;
4511                 while (tmp &&
4512                        (tmp == wpa_s ||
4513                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
4514                         tmp = tmp->next;
4515                 }
4516                 if (tmp == NULL)
4517                         break;
4518                 /* Disconnect from the P2P group and deinit the interface */
4519                 wpas_p2p_disconnect(tmp);
4520         }
4521
4522         /*
4523          * Deinit GO data on any possibly remaining interface (if main
4524          * interface is used as GO).
4525          */
4526         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4527                 if (wpa_s->ap_iface)
4528                         wpas_p2p_group_deinit(wpa_s);
4529         }
4530
4531         p2p_deinit(global->p2p);
4532         global->p2p = NULL;
4533         global->p2p_init_wpa_s = NULL;
4534 }
4535
4536
4537 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4538 {
4539         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
4540             wpa_s->conf->p2p_no_group_iface)
4541                 return 0; /* separate interface disabled per configuration */
4542         if (wpa_s->drv_flags &
4543             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4544              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4545                 return 1; /* P2P group requires a new interface in every case
4546                            */
4547         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4548                 return 0; /* driver does not support concurrent operations */
4549         if (wpa_s->global->ifaces->next)
4550                 return 1; /* more that one interface already in use */
4551         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4552                 return 1; /* this interface is already in use */
4553         return 0;
4554 }
4555
4556
4557 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4558                                  const u8 *peer_addr,
4559                                  enum p2p_wps_method wps_method,
4560                                  int go_intent, const u8 *own_interface_addr,
4561                                  unsigned int force_freq, int persistent_group,
4562                                  struct wpa_ssid *ssid, unsigned int pref_freq)
4563 {
4564         if (persistent_group && wpa_s->conf->persistent_reconnect)
4565                 persistent_group = 2;
4566
4567         /*
4568          * Increase GO config timeout if HT40 is used since it takes some time
4569          * to scan channels for coex purposes before the BSS can be started.
4570          */
4571         p2p_set_config_timeout(wpa_s->global->p2p,
4572                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4573
4574         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4575                            go_intent, own_interface_addr, force_freq,
4576                            persistent_group, ssid ? ssid->ssid : NULL,
4577                            ssid ? ssid->ssid_len : 0,
4578                            wpa_s->p2p_pd_before_go_neg, pref_freq,
4579                            wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4580                            0);
4581 }
4582
4583
4584 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4585                                 const u8 *peer_addr,
4586                                 enum p2p_wps_method wps_method,
4587                                 int go_intent, const u8 *own_interface_addr,
4588                                 unsigned int force_freq, int persistent_group,
4589                                 struct wpa_ssid *ssid, unsigned int pref_freq)
4590 {
4591         if (persistent_group && wpa_s->conf->persistent_reconnect)
4592                 persistent_group = 2;
4593
4594         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4595                              go_intent, own_interface_addr, force_freq,
4596                              persistent_group, ssid ? ssid->ssid : NULL,
4597                              ssid ? ssid->ssid_len : 0, pref_freq,
4598                              wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4599                              0);
4600 }
4601
4602
4603 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4604 {
4605         wpa_s->p2p_join_scan_count++;
4606         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4607                    wpa_s->p2p_join_scan_count);
4608         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4609                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4610                            " for join operationg - stop join attempt",
4611                            MAC2STR(wpa_s->pending_join_iface_addr));
4612                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4613                 if (wpa_s->p2p_auto_pd) {
4614                         wpa_s->p2p_auto_pd = 0;
4615                         wpa_msg_global(wpa_s, MSG_INFO,
4616                                        P2P_EVENT_PROV_DISC_FAILURE
4617                                        " p2p_dev_addr=" MACSTR " status=N/A",
4618                                        MAC2STR(wpa_s->pending_join_dev_addr));
4619                         return;
4620                 }
4621                 wpa_msg_global(wpa_s->parent, MSG_INFO,
4622                                P2P_EVENT_GROUP_FORMATION_FAILURE);
4623                 wpas_notify_p2p_group_formation_failure(wpa_s, "");
4624         }
4625 }
4626
4627
4628 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4629 {
4630         int res;
4631         unsigned int num, i;
4632         struct wpa_used_freq_data *freqs;
4633
4634         if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4635                 /* Multiple channels are supported and not all are in use */
4636                 return 0;
4637         }
4638
4639         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4640                           sizeof(struct wpa_used_freq_data));
4641         if (!freqs)
4642                 return 1;
4643
4644         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4645                                         wpa_s->num_multichan_concurrent);
4646
4647         for (i = 0; i < num; i++) {
4648                 if (freqs[i].freq == freq) {
4649                         wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4650                                    freq);
4651                         res = 0;
4652                         goto exit_free;
4653                 }
4654         }
4655
4656         wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
4657         res = 1;
4658
4659 exit_free:
4660         os_free(freqs);
4661         return res;
4662 }
4663
4664
4665 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4666                             const u8 *peer_dev_addr)
4667 {
4668         struct wpa_bss *bss;
4669         int updated;
4670
4671         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4672         if (bss == NULL)
4673                 return -1;
4674         if (bss->last_update_idx < wpa_s->bss_update_idx) {
4675                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4676                            "last scan");
4677                 return 0;
4678         }
4679
4680         updated = os_reltime_before(&wpa_s->p2p_auto_started,
4681                                     &bss->last_update);
4682         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4683                    "%ld.%06ld (%supdated in last scan)",
4684                    bss->last_update.sec, bss->last_update.usec,
4685                    updated ? "": "not ");
4686
4687         return updated;
4688 }
4689
4690
4691 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4692                                    struct wpa_scan_results *scan_res)
4693 {
4694         struct wpa_bss *bss = NULL;
4695         int freq;
4696         u8 iface_addr[ETH_ALEN];
4697
4698         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4699
4700         if (wpa_s->global->p2p_disabled)
4701                 return;
4702
4703         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4704                    scan_res ? (int) scan_res->num : -1,
4705                    wpa_s->p2p_auto_join ? "auto_" : "");
4706
4707         if (scan_res)
4708                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4709
4710         if (wpa_s->p2p_auto_pd) {
4711                 int join = wpas_p2p_peer_go(wpa_s,
4712                                             wpa_s->pending_join_dev_addr);
4713                 if (join == 0 &&
4714                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4715                         wpa_s->auto_pd_scan_retry++;
4716                         bss = wpa_bss_get_bssid_latest(
4717                                 wpa_s, wpa_s->pending_join_dev_addr);
4718                         if (bss) {
4719                                 freq = bss->freq;
4720                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4721                                            "the peer " MACSTR " at %d MHz",
4722                                            wpa_s->auto_pd_scan_retry,
4723                                            MAC2STR(wpa_s->
4724                                                    pending_join_dev_addr),
4725                                            freq);
4726                                 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4727                                 return;
4728                         }
4729                 }
4730
4731                 if (join < 0)
4732                         join = 0;
4733
4734                 wpa_s->p2p_auto_pd = 0;
4735                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4736                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4737                            MAC2STR(wpa_s->pending_join_dev_addr), join);
4738                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4739                                       wpa_s->pending_join_dev_addr, NULL,
4740                                       wpa_s->pending_pd_config_methods, join,
4741                                       0, wpa_s->user_initiated_pd) < 0) {
4742                         wpa_s->p2p_auto_pd = 0;
4743                         wpa_msg_global(wpa_s, MSG_INFO,
4744                                        P2P_EVENT_PROV_DISC_FAILURE
4745                                        " p2p_dev_addr=" MACSTR " status=N/A",
4746                                        MAC2STR(wpa_s->pending_join_dev_addr));
4747                 }
4748                 return;
4749         }
4750
4751         if (wpa_s->p2p_auto_join) {
4752                 int join = wpas_p2p_peer_go(wpa_s,
4753                                             wpa_s->pending_join_dev_addr);
4754                 if (join < 0) {
4755                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4756                                    "running a GO -> use GO Negotiation");
4757                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4758                                        P2P_EVENT_FALLBACK_TO_GO_NEG
4759                                        "reason=peer-not-running-GO");
4760                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4761                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4762                                          wpa_s->p2p_persistent_group, 0, 0, 0,
4763                                          wpa_s->p2p_go_intent,
4764                                          wpa_s->p2p_connect_freq,
4765                                          wpa_s->p2p_go_vht_center_freq2,
4766                                          wpa_s->p2p_persistent_id,
4767                                          wpa_s->p2p_pd_before_go_neg,
4768                                          wpa_s->p2p_go_ht40,
4769                                          wpa_s->p2p_go_vht,
4770                                          wpa_s->p2p_go_max_oper_chwidth);
4771                         return;
4772                 }
4773
4774                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4775                            "try to join the group", join ? "" :
4776                            " in older scan");
4777                 if (!join) {
4778                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4779                                        P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED);
4780                         wpa_s->p2p_fallback_to_go_neg = 1;
4781                 }
4782         }
4783
4784         freq = p2p_get_oper_freq(wpa_s->global->p2p,
4785                                  wpa_s->pending_join_iface_addr);
4786         if (freq < 0 &&
4787             p2p_get_interface_addr(wpa_s->global->p2p,
4788                                    wpa_s->pending_join_dev_addr,
4789                                    iface_addr) == 0 &&
4790             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0
4791             && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) {
4792                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4793                            "address for join from " MACSTR " to " MACSTR
4794                            " based on newly discovered P2P peer entry",
4795                            MAC2STR(wpa_s->pending_join_iface_addr),
4796                            MAC2STR(iface_addr));
4797                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4798                           ETH_ALEN);
4799
4800                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4801                                          wpa_s->pending_join_iface_addr);
4802         }
4803         if (freq >= 0) {
4804                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4805                            "from P2P peer table: %d MHz", freq);
4806         }
4807         if (wpa_s->p2p_join_ssid_len) {
4808                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4809                            MACSTR " and SSID %s",
4810                            MAC2STR(wpa_s->pending_join_iface_addr),
4811                            wpa_ssid_txt(wpa_s->p2p_join_ssid,
4812                                         wpa_s->p2p_join_ssid_len));
4813                 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4814                                   wpa_s->p2p_join_ssid,
4815                                   wpa_s->p2p_join_ssid_len);
4816         }
4817         if (!bss) {
4818                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4819                            MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4820                 bss = wpa_bss_get_bssid_latest(wpa_s,
4821                                                wpa_s->pending_join_iface_addr);
4822         }
4823         if (bss) {
4824                 u8 dev_addr[ETH_ALEN];
4825
4826                 freq = bss->freq;
4827                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4828                            "from BSS table: %d MHz (SSID %s)", freq,
4829                            wpa_ssid_txt(bss->ssid, bss->ssid_len));
4830                 if (p2p_parse_dev_addr((const u8 *) (bss + 1), bss->ie_len,
4831                                        dev_addr) == 0 &&
4832                     os_memcmp(wpa_s->pending_join_dev_addr,
4833                               wpa_s->pending_join_iface_addr, ETH_ALEN) == 0 &&
4834                     os_memcmp(dev_addr, wpa_s->pending_join_dev_addr,
4835                               ETH_ALEN) != 0) {
4836                         wpa_printf(MSG_DEBUG,
4837                                    "P2P: Update target GO device address based on BSS entry: " MACSTR " (was " MACSTR ")",
4838                                    MAC2STR(dev_addr),
4839                                    MAC2STR(wpa_s->pending_join_dev_addr));
4840                         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr,
4841                                   ETH_ALEN);
4842                 }
4843         }
4844         if (freq > 0) {
4845                 u16 method;
4846
4847                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4848                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4849                                        P2P_EVENT_GROUP_FORMATION_FAILURE
4850                                        "reason=FREQ_CONFLICT");
4851                         wpas_notify_p2p_group_formation_failure(
4852                                 wpa_s, "FREQ_CONFLICT");
4853                         return;
4854                 }
4855
4856                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4857                            "prior to joining an existing group (GO " MACSTR
4858                            " freq=%u MHz)",
4859                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
4860                 wpa_s->pending_pd_before_join = 1;
4861
4862                 switch (wpa_s->pending_join_wps_method) {
4863                 case WPS_PIN_DISPLAY:
4864                         method = WPS_CONFIG_KEYPAD;
4865                         break;
4866                 case WPS_PIN_KEYPAD:
4867                         method = WPS_CONFIG_DISPLAY;
4868                         break;
4869                 case WPS_PBC:
4870                         method = WPS_CONFIG_PUSHBUTTON;
4871                         break;
4872                 case WPS_P2PS:
4873                         method = WPS_CONFIG_P2PS;
4874                         break;
4875                 default:
4876                         method = 0;
4877                         break;
4878                 }
4879
4880                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4881                                                wpa_s->pending_join_dev_addr) ==
4882                      method)) {
4883                         /*
4884                          * We have already performed provision discovery for
4885                          * joining the group. Proceed directly to join
4886                          * operation without duplicated provision discovery. */
4887                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4888                                    "with " MACSTR " already done - proceed to "
4889                                    "join",
4890                                    MAC2STR(wpa_s->pending_join_dev_addr));
4891                         wpa_s->pending_pd_before_join = 0;
4892                         goto start;
4893                 }
4894
4895                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4896                                       wpa_s->pending_join_dev_addr,
4897                                       NULL, method, 1,
4898                                       freq, wpa_s->user_initiated_pd) < 0) {
4899                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4900                                    "Discovery Request before joining an "
4901                                    "existing group");
4902                         wpa_s->pending_pd_before_join = 0;
4903                         goto start;
4904                 }
4905                 return;
4906         }
4907
4908         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4909         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4910         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4911         wpas_p2p_check_join_scan_limit(wpa_s);
4912         return;
4913
4914 start:
4915         /* Start join operation immediately */
4916         wpas_p2p_join_start(wpa_s, 0, NULL, 0);
4917 }
4918
4919
4920 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4921                                    const u8 *ssid, size_t ssid_len)
4922 {
4923         int ret;
4924         struct wpa_driver_scan_params params;
4925         struct wpabuf *wps_ie, *ies;
4926         size_t ielen;
4927         int freqs[2] = { 0, 0 };
4928
4929         os_memset(&params, 0, sizeof(params));
4930
4931         /* P2P Wildcard SSID */
4932         params.num_ssids = 1;
4933         if (ssid && ssid_len) {
4934                 params.ssids[0].ssid = ssid;
4935                 params.ssids[0].ssid_len = ssid_len;
4936                 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4937                 wpa_s->p2p_join_ssid_len = ssid_len;
4938         } else {
4939                 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4940                 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4941                 wpa_s->p2p_join_ssid_len = 0;
4942         }
4943
4944         wpa_s->wps->dev.p2p = 1;
4945         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4946                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4947                                         NULL);
4948         if (wps_ie == NULL) {
4949                 wpas_p2p_scan_res_join(wpa_s, NULL);
4950                 return;
4951         }
4952
4953         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4954         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4955         if (ies == NULL) {
4956                 wpabuf_free(wps_ie);
4957                 wpas_p2p_scan_res_join(wpa_s, NULL);
4958                 return;
4959         }
4960         wpabuf_put_buf(ies, wps_ie);
4961         wpabuf_free(wps_ie);
4962
4963         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4964
4965         params.p2p_probe = 1;
4966         params.extra_ies = wpabuf_head(ies);
4967         params.extra_ies_len = wpabuf_len(ies);
4968
4969         if (!freq) {
4970                 int oper_freq;
4971                 /*
4972                  * If freq is not provided, check the operating freq of the GO
4973                  * and use a single channel scan on if possible.
4974                  */
4975                 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4976                                               wpa_s->pending_join_iface_addr);
4977                 if (oper_freq > 0)
4978                         freq = oper_freq;
4979         }
4980         if (freq > 0) {
4981                 freqs[0] = freq;
4982                 params.freqs = freqs;
4983         }
4984
4985         /*
4986          * Run a scan to update BSS table and start Provision Discovery once
4987          * the new scan results become available.
4988          */
4989         ret = wpa_drv_scan(wpa_s, &params);
4990         if (!ret) {
4991                 os_get_reltime(&wpa_s->scan_trigger_time);
4992                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
4993                 wpa_s->own_scan_requested = 1;
4994         }
4995
4996         wpabuf_free(ies);
4997
4998         if (ret) {
4999                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
5000                            "try again later");
5001                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5002                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
5003                 wpas_p2p_check_join_scan_limit(wpa_s);
5004         }
5005 }
5006
5007
5008 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
5009 {
5010         struct wpa_supplicant *wpa_s = eloop_ctx;
5011         wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
5012 }
5013
5014
5015 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
5016                          const u8 *dev_addr, enum p2p_wps_method wps_method,
5017                          int auto_join, int op_freq,
5018                          const u8 *ssid, size_t ssid_len)
5019 {
5020         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
5021                    MACSTR " dev " MACSTR " op_freq=%d)%s",
5022                    MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
5023                    auto_join ? " (auto_join)" : "");
5024         if (ssid && ssid_len) {
5025                 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
5026                            wpa_ssid_txt(ssid, ssid_len));
5027         }
5028
5029         wpa_s->p2p_auto_pd = 0;
5030         wpa_s->p2p_auto_join = !!auto_join;
5031         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
5032         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
5033         wpa_s->pending_join_wps_method = wps_method;
5034
5035         /* Make sure we are not running find during connection establishment */
5036         wpas_p2p_stop_find(wpa_s);
5037
5038         wpa_s->p2p_join_scan_count = 0;
5039         wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
5040         return 0;
5041 }
5042
5043
5044 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
5045                                const u8 *ssid, size_t ssid_len)
5046 {
5047         struct wpa_supplicant *group;
5048         struct p2p_go_neg_results res;
5049         struct wpa_bss *bss;
5050
5051         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
5052         if (group == NULL)
5053                 return -1;
5054         if (group != wpa_s) {
5055                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
5056                           sizeof(group->p2p_pin));
5057                 group->p2p_wps_method = wpa_s->p2p_wps_method;
5058         } else {
5059                 /*
5060                  * Need to mark the current interface for p2p_group_formation
5061                  * when a separate group interface is not used. This is needed
5062                  * to allow p2p_cancel stop a pending p2p_connect-join.
5063                  * wpas_p2p_init_group_interface() addresses this for the case
5064                  * where a separate group interface is used.
5065                  */
5066                 wpa_s->global->p2p_group_formation = wpa_s;
5067         }
5068
5069         group->p2p_in_provisioning = 1;
5070         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
5071
5072         os_memset(&res, 0, sizeof(res));
5073         os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
5074         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
5075                   ETH_ALEN);
5076         res.wps_method = wpa_s->pending_join_wps_method;
5077         if (freq && ssid && ssid_len) {
5078                 res.freq = freq;
5079                 res.ssid_len = ssid_len;
5080                 os_memcpy(res.ssid, ssid, ssid_len);
5081         } else {
5082                 bss = wpa_bss_get_bssid_latest(wpa_s,
5083                                                wpa_s->pending_join_iface_addr);
5084                 if (bss) {
5085                         res.freq = bss->freq;
5086                         res.ssid_len = bss->ssid_len;
5087                         os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
5088                         wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
5089                                    bss->freq,
5090                                    wpa_ssid_txt(bss->ssid, bss->ssid_len));
5091                 }
5092         }
5093
5094         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
5095                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
5096                            "starting client");
5097                 wpa_drv_cancel_remain_on_channel(wpa_s);
5098                 wpa_s->off_channel_freq = 0;
5099                 wpa_s->roc_waiting_drv_freq = 0;
5100         }
5101         wpas_start_wps_enrollee(group, &res);
5102
5103         /*
5104          * Allow a longer timeout for join-a-running-group than normal 15
5105          * second group formation timeout since the GO may not have authorized
5106          * our connection yet.
5107          */
5108         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
5109         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
5110                                wpa_s, NULL);
5111
5112         return 0;
5113 }
5114
5115
5116 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
5117                                 int *force_freq, int *pref_freq, int go,
5118                                 unsigned int *pref_freq_list,
5119                                 unsigned int *num_pref_freq)
5120 {
5121         struct wpa_used_freq_data *freqs;
5122         int res, best_freq, num_unused;
5123         unsigned int freq_in_use = 0, num, i, max_pref_freq;
5124
5125         max_pref_freq = *num_pref_freq;
5126         *num_pref_freq = 0;
5127
5128         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5129                           sizeof(struct wpa_used_freq_data));
5130         if (!freqs)
5131                 return -1;
5132
5133         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5134                                         wpa_s->num_multichan_concurrent);
5135
5136         /*
5137          * It is possible that the total number of used frequencies is bigger
5138          * than the number of frequencies used for P2P, so get the system wide
5139          * number of unused frequencies.
5140          */
5141         num_unused = wpas_p2p_num_unused_channels(wpa_s);
5142
5143         wpa_printf(MSG_DEBUG,
5144                    "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
5145                    freq, wpa_s->num_multichan_concurrent, num, num_unused);
5146
5147         if (freq > 0) {
5148                 int ret;
5149                 if (go)
5150                         ret = p2p_supported_freq(wpa_s->global->p2p, freq);
5151                 else
5152                         ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
5153                 if (!ret) {
5154                         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5155                             ieee80211_is_dfs(freq)) {
5156                                 /*
5157                                  * If freq is a DFS channel and DFS is offloaded
5158                                  * to the driver, allow P2P GO to use it.
5159                                  */
5160                                 wpa_printf(MSG_DEBUG,
5161                                            "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver",
5162                                            freq);
5163                         } else {
5164                                 wpa_printf(MSG_DEBUG,
5165                                            "P2P: The forced channel (%u MHz) is not supported for P2P uses",
5166                                            freq);
5167                                 res = -3;
5168                                 goto exit_free;
5169                         }
5170                 }
5171
5172                 for (i = 0; i < num; i++) {
5173                         if (freqs[i].freq == freq)
5174                                 freq_in_use = 1;
5175                 }
5176
5177                 if (num_unused <= 0 && !freq_in_use) {
5178                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
5179                                    freq);
5180                         res = -2;
5181                         goto exit_free;
5182                 }
5183                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
5184                            "requested channel (%u MHz)", freq);
5185                 *force_freq = freq;
5186                 goto exit_ok;
5187         }
5188
5189         best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5190
5191         if (!wpa_s->conf->num_p2p_pref_chan && *pref_freq == 0) {
5192                 enum wpa_driver_if_type iface_type;
5193
5194                 if (go)
5195                         iface_type = WPA_IF_P2P_GO;
5196                 else
5197                         iface_type = WPA_IF_P2P_CLIENT;
5198
5199                 wpa_printf(MSG_DEBUG, "P2P: best_freq=%d, go=%d",
5200                            best_freq, go);
5201
5202                 res = wpa_drv_get_pref_freq_list(wpa_s, iface_type,
5203                                                  &max_pref_freq,
5204                                                  pref_freq_list);
5205                 if (!res && max_pref_freq > 0) {
5206                         *num_pref_freq = max_pref_freq;
5207                         i = 0;
5208                         while (wpas_p2p_disallowed_freq(wpa_s->global,
5209                                                         pref_freq_list[i]) &&
5210                                i < *num_pref_freq) {
5211                                 wpa_printf(MSG_DEBUG,
5212                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
5213                                            i, pref_freq_list[i]);
5214                                 i++;
5215                         }
5216                         if (i != *num_pref_freq) {
5217                                 best_freq = pref_freq_list[i];
5218                                 wpa_printf(MSG_DEBUG,
5219                                            "P2P: Using preferred_freq_list[%d]=%d",
5220                                            i, best_freq);
5221                         } else {
5222                                 wpa_printf(MSG_DEBUG,
5223                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5224                                 *num_pref_freq = 0;
5225                         }
5226                 } else {
5227                         wpa_printf(MSG_DEBUG,
5228                                    "P2P: No preferred frequency list available");
5229                 }
5230         }
5231
5232         /* We have a candidate frequency to use */
5233         if (best_freq > 0) {
5234                 if (*pref_freq == 0 && num_unused > 0) {
5235                         wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
5236                                    best_freq);
5237                         *pref_freq = best_freq;
5238                 } else {
5239                         wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
5240                                    best_freq);
5241                         *force_freq = best_freq;
5242                 }
5243         } else if (num_unused > 0) {
5244                 wpa_printf(MSG_DEBUG,
5245                            "P2P: Current operating channels are not available for P2P. Try to use another channel");
5246                 *force_freq = 0;
5247         } else {
5248                 wpa_printf(MSG_DEBUG,
5249                            "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
5250                 res = -2;
5251                 goto exit_free;
5252         }
5253
5254 exit_ok:
5255         res = 0;
5256 exit_free:
5257         os_free(freqs);
5258         return res;
5259 }
5260
5261
5262 /**
5263  * wpas_p2p_connect - Request P2P Group Formation to be started
5264  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5265  * @peer_addr: Address of the peer P2P Device
5266  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
5267  * @persistent_group: Whether to create a persistent group
5268  * @auto_join: Whether to select join vs. GO Negotiation automatically
5269  * @join: Whether to join an existing group (as a client) instead of starting
5270  *      Group Owner negotiation; @peer_addr is BSSID in that case
5271  * @auth: Whether to only authorize the connection instead of doing that and
5272  *      initiating Group Owner negotiation
5273  * @go_intent: GO Intent or -1 to use default
5274  * @freq: Frequency for the group or 0 for auto-selection
5275  * @freq2: Center frequency of segment 1 for the GO operating in VHT 80P80 mode
5276  * @persistent_id: Persistent group credentials to use for forcing GO
5277  *      parameters or -1 to generate new values (SSID/passphrase)
5278  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
5279  *      interoperability workaround when initiating group formation
5280  * @ht40: Start GO with 40 MHz channel width
5281  * @vht:  Start GO with VHT support
5282  * @vht_chwidth: Channel width supported by GO operating with VHT support
5283  *      (VHT_CHANWIDTH_*).
5284  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
5285  *      failure, -2 on failure due to channel not currently available,
5286  *      -3 if forced channel is not supported
5287  */
5288 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5289                      const char *pin, enum p2p_wps_method wps_method,
5290                      int persistent_group, int auto_join, int join, int auth,
5291                      int go_intent, int freq, unsigned int vht_center_freq2,
5292                      int persistent_id, int pd, int ht40, int vht,
5293                      unsigned int vht_chwidth)
5294 {
5295         int force_freq = 0, pref_freq = 0;
5296         int ret = 0, res;
5297         enum wpa_driver_if_type iftype;
5298         const u8 *if_addr;
5299         struct wpa_ssid *ssid = NULL;
5300         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
5301
5302         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5303                 return -1;
5304
5305         if (persistent_id >= 0) {
5306                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
5307                 if (ssid == NULL || ssid->disabled != 2 ||
5308                     ssid->mode != WPAS_MODE_P2P_GO)
5309                         return -1;
5310         }
5311
5312         os_free(wpa_s->global->add_psk);
5313         wpa_s->global->add_psk = NULL;
5314
5315         wpa_s->global->p2p_fail_on_wps_complete = 0;
5316         wpa_s->global->pending_p2ps_group = 0;
5317         wpa_s->global->pending_p2ps_group_freq = 0;
5318         wpa_s->p2ps_method_config_any = 0;
5319
5320         if (go_intent < 0)
5321                 go_intent = wpa_s->conf->p2p_go_intent;
5322
5323         if (!auth)
5324                 wpa_s->p2p_long_listen = 0;
5325
5326         wpa_s->p2p_wps_method = wps_method;
5327         wpa_s->p2p_persistent_group = !!persistent_group;
5328         wpa_s->p2p_persistent_id = persistent_id;
5329         wpa_s->p2p_go_intent = go_intent;
5330         wpa_s->p2p_connect_freq = freq;
5331         wpa_s->p2p_fallback_to_go_neg = 0;
5332         wpa_s->p2p_pd_before_go_neg = !!pd;
5333         wpa_s->p2p_go_ht40 = !!ht40;
5334         wpa_s->p2p_go_vht = !!vht;
5335         wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
5336         wpa_s->p2p_go_max_oper_chwidth = vht_chwidth;
5337
5338         if (pin)
5339                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
5340         else if (wps_method == WPS_PIN_DISPLAY) {
5341                 ret = wps_generate_pin();
5342                 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin),
5343                                   "%08d", ret);
5344                 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res))
5345                         wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0';
5346                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
5347                            wpa_s->p2p_pin);
5348         } else
5349                 wpa_s->p2p_pin[0] = '\0';
5350
5351         if (join || auto_join) {
5352                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
5353                 if (auth) {
5354                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
5355                                    "connect a running group from " MACSTR,
5356                                    MAC2STR(peer_addr));
5357                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
5358                         return ret;
5359                 }
5360                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
5361                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
5362                                            iface_addr) < 0) {
5363                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
5364                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
5365                                          dev_addr);
5366                 }
5367                 if (auto_join) {
5368                         os_get_reltime(&wpa_s->p2p_auto_started);
5369                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
5370                                    "%ld.%06ld",
5371                                    wpa_s->p2p_auto_started.sec,
5372                                    wpa_s->p2p_auto_started.usec);
5373                 }
5374                 wpa_s->user_initiated_pd = 1;
5375                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
5376                                   auto_join, freq, NULL, 0) < 0)
5377                         return -1;
5378                 return ret;
5379         }
5380
5381         size = P2P_MAX_PREF_CHANNELS;
5382         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5383                                    go_intent == 15, pref_freq_list, &size);
5384         if (res)
5385                 return res;
5386         wpas_p2p_set_own_freq_preference(wpa_s,
5387                                          force_freq ? force_freq : pref_freq);
5388
5389         p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
5390
5391         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
5392
5393         if (wpa_s->create_p2p_iface) {
5394                 /* Prepare to add a new interface for the group */
5395                 iftype = WPA_IF_P2P_GROUP;
5396                 if (go_intent == 15)
5397                         iftype = WPA_IF_P2P_GO;
5398                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
5399                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
5400                                    "interface for the group");
5401                         return -1;
5402                 }
5403
5404                 if_addr = wpa_s->pending_interface_addr;
5405         } else {
5406                 if_addr = wpa_s->own_addr;
5407                 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
5408         }
5409
5410         if (auth) {
5411                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
5412                                          go_intent, if_addr,
5413                                          force_freq, persistent_group, ssid,
5414                                          pref_freq) < 0)
5415                         return -1;
5416                 return ret;
5417         }
5418
5419         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
5420                                   go_intent, if_addr, force_freq,
5421                                   persistent_group, ssid, pref_freq) < 0) {
5422                 if (wpa_s->create_p2p_iface)
5423                         wpas_p2p_remove_pending_group_interface(wpa_s);
5424                 return -1;
5425         }
5426         return ret;
5427 }
5428
5429
5430 /**
5431  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
5432  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5433  * @freq: Frequency of the channel in MHz
5434  * @duration: Duration of the stay on the channel in milliseconds
5435  *
5436  * This callback is called when the driver indicates that it has started the
5437  * requested remain-on-channel duration.
5438  */
5439 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5440                                    unsigned int freq, unsigned int duration)
5441 {
5442         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5443                 return;
5444         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)",
5445                    wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5446                    wpa_s->roc_waiting_drv_freq, freq, duration);
5447         if (wpa_s->off_channel_freq &&
5448             wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
5449                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
5450                               wpa_s->pending_listen_duration);
5451                 wpa_s->pending_listen_freq = 0;
5452         } else {
5453                 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
5454                            wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5455                            freq, duration);
5456         }
5457 }
5458
5459
5460 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout)
5461 {
5462         /* Limit maximum Listen state time based on driver limitation. */
5463         if (timeout > wpa_s->max_remain_on_chan)
5464                 timeout = wpa_s->max_remain_on_chan;
5465
5466         return p2p_listen(wpa_s->global->p2p, timeout);
5467 }
5468
5469
5470 /**
5471  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
5472  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5473  * @freq: Frequency of the channel in MHz
5474  *
5475  * This callback is called when the driver indicates that a remain-on-channel
5476  * operation has been completed, i.e., the duration on the requested channel
5477  * has timed out.
5478  */
5479 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5480                                           unsigned int freq)
5481 {
5482         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
5483                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
5484                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
5485         wpas_p2p_listen_work_done(wpa_s);
5486         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5487                 return;
5488         if (wpa_s->p2p_long_listen > 0)
5489                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
5490         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
5491                 return; /* P2P module started a new operation */
5492         if (offchannel_pending_action_tx(wpa_s))
5493                 return;
5494         if (wpa_s->p2p_long_listen > 0) {
5495                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
5496                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
5497         } else {
5498                 /*
5499                  * When listen duration is over, stop listen & update p2p_state
5500                  * to IDLE.
5501                  */
5502                 p2p_stop_listen(wpa_s->global->p2p);
5503         }
5504 }
5505
5506
5507 /**
5508  * wpas_p2p_group_remove - Remove a P2P group
5509  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5510  * @ifname: Network interface name of the group interface or "*" to remove all
5511  *      groups
5512  * Returns: 0 on success, -1 on failure
5513  *
5514  * This function is used to remove a P2P group. This can be used to disconnect
5515  * from a group in which the local end is a P2P Client or to end a P2P Group in
5516  * case the local end is the Group Owner. If a virtual network interface was
5517  * created for this group, that interface will be removed. Otherwise, only the
5518  * configured P2P group network will be removed from the interface.
5519  */
5520 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
5521 {
5522         struct wpa_global *global = wpa_s->global;
5523         struct wpa_supplicant *calling_wpa_s = wpa_s;
5524
5525         if (os_strcmp(ifname, "*") == 0) {
5526                 struct wpa_supplicant *prev;
5527                 wpa_s = global->ifaces;
5528                 while (wpa_s) {
5529                         prev = wpa_s;
5530                         wpa_s = wpa_s->next;
5531                         if (prev->p2p_group_interface !=
5532                             NOT_P2P_GROUP_INTERFACE ||
5533                             (prev->current_ssid &&
5534                              prev->current_ssid->p2p_group))
5535                                 wpas_p2p_disconnect_safely(prev, calling_wpa_s);
5536                 }
5537                 return 0;
5538         }
5539
5540         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5541                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5542                         break;
5543         }
5544
5545         return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s);
5546 }
5547
5548
5549 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
5550 {
5551         unsigned int r;
5552
5553         if (!wpa_s->conf->num_p2p_pref_chan && !freq) {
5554                 unsigned int i, size = P2P_MAX_PREF_CHANNELS;
5555                 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS];
5556                 int res;
5557
5558                 res = wpa_drv_get_pref_freq_list(wpa_s, WPA_IF_P2P_GO,
5559                                                  &size, pref_freq_list);
5560                 if (!res && size > 0) {
5561                         i = 0;
5562                         while (wpas_p2p_disallowed_freq(wpa_s->global,
5563                                                         pref_freq_list[i]) &&
5564                                i < size) {
5565                                 wpa_printf(MSG_DEBUG,
5566                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
5567                                            i, pref_freq_list[i]);
5568                                 i++;
5569                         }
5570                         if (i != size) {
5571                                 freq = pref_freq_list[i];
5572                                 wpa_printf(MSG_DEBUG,
5573                                            "P2P: Using preferred_freq_list[%d]=%d",
5574                                            i, freq);
5575                         } else {
5576                                 wpa_printf(MSG_DEBUG,
5577                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5578                         }
5579                 } else {
5580                         wpa_printf(MSG_DEBUG,
5581                                    "P2P: No preferred frequency list available");
5582                 }
5583         }
5584
5585         if (freq == 2) {
5586                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
5587                            "band");
5588                 if (wpa_s->best_24_freq > 0 &&
5589                     p2p_supported_freq_go(wpa_s->global->p2p,
5590                                           wpa_s->best_24_freq)) {
5591                         freq = wpa_s->best_24_freq;
5592                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
5593                                    "channel: %d MHz", freq);
5594                 } else {
5595                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5596                                 return -1;
5597                         freq = 2412 + (r % 3) * 25;
5598                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
5599                                    "channel: %d MHz", freq);
5600                 }
5601         }
5602
5603         if (freq == 5) {
5604                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
5605                            "band");
5606                 if (wpa_s->best_5_freq > 0 &&
5607                     p2p_supported_freq_go(wpa_s->global->p2p,
5608                                        wpa_s->best_5_freq)) {
5609                         freq = wpa_s->best_5_freq;
5610                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
5611                                    "channel: %d MHz", freq);
5612                 } else {
5613                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5614                                 return -1;
5615                         freq = 5180 + (r % 4) * 20;
5616                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5617                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
5618                                            "5 GHz channel for P2P group");
5619                                 return -1;
5620                         }
5621                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
5622                                    "channel: %d MHz", freq);
5623                 }
5624         }
5625
5626         if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5627                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5628                     ieee80211_is_dfs(freq)) {
5629                         /*
5630                          * If freq is a DFS channel and DFS is offloaded to the
5631                          * driver, allow P2P GO to use it.
5632                          */
5633                         wpa_printf(MSG_DEBUG, "P2P: "
5634                                    "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded",
5635                                    __func__, freq);
5636                         return freq;
5637                 }
5638                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
5639                            "(%u MHz) is not supported for P2P uses",
5640                            freq);
5641                 return -1;
5642         }
5643
5644         return freq;
5645 }
5646
5647
5648 static int wpas_p2p_supported_freq_go(struct wpa_supplicant *wpa_s,
5649                                       const struct p2p_channels *channels,
5650                                       int freq)
5651 {
5652         if (!wpas_p2p_disallowed_freq(wpa_s->global, freq) &&
5653             p2p_supported_freq_go(wpa_s->global->p2p, freq) &&
5654             freq_included(wpa_s, channels, freq))
5655                 return 1;
5656         return 0;
5657 }
5658
5659
5660 static void wpas_p2p_select_go_freq_no_pref(struct wpa_supplicant *wpa_s,
5661                                             struct p2p_go_neg_results *params,
5662                                             const struct p2p_channels *channels)
5663 {
5664         unsigned int i, r;
5665
5666         /* first try some random selection of the social channels */
5667         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5668                 return;
5669
5670         for (i = 0; i < 3; i++) {
5671                 params->freq = 2412 + ((r + i) % 3) * 25;
5672                 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5673                         goto out;
5674         }
5675
5676         /* try all other channels in operating class 81 */
5677         for (i = 0; i < 11; i++) {
5678                 params->freq = 2412 + i * 5;
5679
5680                 /* skip social channels; covered in the previous loop */
5681                 if (params->freq == 2412 ||
5682                     params->freq == 2437 ||
5683                     params->freq == 2462)
5684                         continue;
5685
5686                 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5687                         goto out;
5688         }
5689
5690         /* try all channels in operating class 115 */
5691         for (i = 0; i < 4; i++) {
5692                 params->freq = 5180 + i * 20;
5693                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5694                     freq_included(wpa_s, channels, params->freq) &&
5695                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5696                         goto out;
5697         }
5698
5699         /* try all channels in operating class 124 */
5700         for (i = 0; i < 4; i++) {
5701                 params->freq = 5745 + i * 20;
5702                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5703                     freq_included(wpa_s, channels, params->freq) &&
5704                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5705                         goto out;
5706         }
5707
5708         /* try social channel class 180 channel 2 */
5709         params->freq = 58320 + 1 * 2160;
5710         if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5711             freq_included(wpa_s, channels, params->freq) &&
5712             p2p_supported_freq(wpa_s->global->p2p, params->freq))
5713                 goto out;
5714
5715         /* try all channels in reg. class 180 */
5716         for (i = 0; i < 4; i++) {
5717                 params->freq = 58320 + i * 2160;
5718                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5719                     freq_included(wpa_s, channels, params->freq) &&
5720                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5721                         goto out;
5722         }
5723
5724         params->freq = 0;
5725         wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed");
5726         return;
5727 out:
5728         wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)",
5729                    params->freq);
5730 }
5731
5732
5733 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
5734                                    struct p2p_go_neg_results *params,
5735                                    int freq, int vht_center_freq2, int ht40,
5736                                    int vht, int max_oper_chwidth,
5737                                    const struct p2p_channels *channels)
5738 {
5739         struct wpa_used_freq_data *freqs;
5740         unsigned int cand;
5741         unsigned int num, i;
5742         int ignore_no_freqs = 0;
5743
5744         os_memset(params, 0, sizeof(*params));
5745         params->role_go = 1;
5746         params->ht40 = ht40;
5747         params->vht = vht;
5748         params->max_oper_chwidth = max_oper_chwidth;
5749         params->vht_center_freq2 = vht_center_freq2;
5750
5751         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5752                           sizeof(struct wpa_used_freq_data));
5753         if (!freqs)
5754                 return -1;
5755
5756         num = get_shared_radio_freqs_data(wpa_s, freqs,
5757                                           wpa_s->num_multichan_concurrent);
5758
5759         if (wpa_s->current_ssid &&
5760             wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO &&
5761             wpa_s->wpa_state == WPA_COMPLETED) {
5762                 wpa_printf(MSG_DEBUG, "P2P: %s called for an active GO",
5763                            __func__);
5764
5765                 /*
5766                  * If the frequency selection is done for an active P2P GO that
5767                  * is not sharing a frequency, allow to select a new frequency
5768                  * even if there are no unused frequencies as we are about to
5769                  * move the P2P GO so its frequency can be re-used.
5770                  */
5771                 for (i = 0; i < num; i++) {
5772                         if (freqs[i].freq == wpa_s->current_ssid->frequency &&
5773                             freqs[i].flags == 0) {
5774                                 ignore_no_freqs = 1;
5775                                 break;
5776                         }
5777                 }
5778         }
5779
5780         /* try using the forced freq */
5781         if (freq) {
5782                 if (!wpas_p2p_supported_freq_go(wpa_s, channels, freq)) {
5783                         wpa_printf(MSG_DEBUG,
5784                                    "P2P: Forced GO freq %d MHz not accepted",
5785                                    freq);
5786                         goto fail;
5787                 }
5788
5789                 for (i = 0; i < num; i++) {
5790                         if (freqs[i].freq == freq) {
5791                                 wpa_printf(MSG_DEBUG,
5792                                            "P2P: forced freq (%d MHz) is also shared",
5793                                            freq);
5794                                 params->freq = freq;
5795                                 goto success;
5796                         }
5797                 }
5798
5799                 if (!ignore_no_freqs &&
5800                     wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5801                         wpa_printf(MSG_DEBUG,
5802                                    "P2P: Cannot force GO on freq (%d MHz) as all the channels are in use",
5803                                    freq);
5804                         goto fail;
5805                 }
5806
5807                 wpa_printf(MSG_DEBUG,
5808                            "P2P: force GO freq (%d MHz) on a free channel",
5809                            freq);
5810                 params->freq = freq;
5811                 goto success;
5812         }
5813
5814         /* consider using one of the shared frequencies */
5815         if (num) {
5816                 cand = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5817                 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5818                         wpa_printf(MSG_DEBUG,
5819                                    "P2P: Use shared freq (%d MHz) for GO",
5820                                    freq);
5821                         params->freq = cand;
5822                         goto success;
5823                 }
5824
5825                 /* try using one of the shared freqs */
5826                 for (i = 0; i < num; i++) {
5827                         if (wpas_p2p_supported_freq_go(wpa_s, channels,
5828                                                        freqs[i].freq)) {
5829                                 wpa_printf(MSG_DEBUG,
5830                                            "P2P: Use shared freq (%d MHz) for GO",
5831                                            freq);
5832                                 params->freq = freqs[i].freq;
5833                                 goto success;
5834                         }
5835                 }
5836         }
5837
5838         if (!ignore_no_freqs &&
5839             wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5840                 wpa_printf(MSG_DEBUG,
5841                            "P2P: Cannot force GO on any of the channels we are already using");
5842                 goto fail;
5843         }
5844
5845         /* try using the setting from the configuration file */
5846         if (wpa_s->conf->p2p_oper_reg_class == 81 &&
5847             wpa_s->conf->p2p_oper_channel >= 1 &&
5848             wpa_s->conf->p2p_oper_channel <= 11 &&
5849             wpas_p2p_supported_freq_go(
5850                     wpa_s, channels,
5851                     2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
5852                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
5853                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5854                            "frequency %d MHz", params->freq);
5855                 goto success;
5856         }
5857
5858         if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
5859              wpa_s->conf->p2p_oper_reg_class == 116 ||
5860              wpa_s->conf->p2p_oper_reg_class == 117 ||
5861              wpa_s->conf->p2p_oper_reg_class == 124 ||
5862              wpa_s->conf->p2p_oper_reg_class == 125 ||
5863              wpa_s->conf->p2p_oper_reg_class == 126 ||
5864              wpa_s->conf->p2p_oper_reg_class == 127) &&
5865             wpas_p2p_supported_freq_go(wpa_s, channels,
5866                                        5000 +
5867                                        5 * wpa_s->conf->p2p_oper_channel)) {
5868                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
5869                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5870                            "frequency %d MHz", params->freq);
5871                 goto success;
5872         }
5873
5874         /* Try using best channels */
5875         if (wpa_s->conf->p2p_oper_channel == 0 &&
5876             wpa_s->best_overall_freq > 0 &&
5877             wpas_p2p_supported_freq_go(wpa_s, channels,
5878                                        wpa_s->best_overall_freq)) {
5879                 params->freq = wpa_s->best_overall_freq;
5880                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
5881                            "channel %d MHz", params->freq);
5882                 goto success;
5883         }
5884
5885         if (wpa_s->conf->p2p_oper_channel == 0 &&
5886             wpa_s->best_24_freq > 0 &&
5887             wpas_p2p_supported_freq_go(wpa_s, channels,
5888                                        wpa_s->best_24_freq)) {
5889                 params->freq = wpa_s->best_24_freq;
5890                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
5891                            "channel %d MHz", params->freq);
5892                 goto success;
5893         }
5894
5895         if (wpa_s->conf->p2p_oper_channel == 0 &&
5896             wpa_s->best_5_freq > 0 &&
5897             wpas_p2p_supported_freq_go(wpa_s, channels,
5898                                        wpa_s->best_5_freq)) {
5899                 params->freq = wpa_s->best_5_freq;
5900                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
5901                            "channel %d MHz", params->freq);
5902                 goto success;
5903         }
5904
5905         /* try using preferred channels */
5906         cand = p2p_get_pref_freq(wpa_s->global->p2p, channels);
5907         if (cand && wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5908                 params->freq = cand;
5909                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
5910                            "channels", params->freq);
5911                 goto success;
5912         }
5913
5914         /* Try using one of the group common freqs */
5915         if (wpa_s->p2p_group_common_freqs) {
5916                 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
5917                         cand = wpa_s->p2p_group_common_freqs[i];
5918                         if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5919                                 params->freq = cand;
5920                                 wpa_printf(MSG_DEBUG,
5921                                            "P2P: Use freq %d MHz common with the peer",
5922                                            params->freq);
5923                                 goto success;
5924                         }
5925                 }
5926         }
5927
5928         /* no preference, select some channel */
5929         wpas_p2p_select_go_freq_no_pref(wpa_s, params, channels);
5930
5931         if (params->freq == 0) {
5932                 wpa_printf(MSG_DEBUG, "P2P: did not find a freq for GO use");
5933                 goto fail;
5934         }
5935
5936 success:
5937         os_free(freqs);
5938         return 0;
5939 fail:
5940         os_free(freqs);
5941         return -1;
5942 }
5943
5944
5945 static struct wpa_supplicant *
5946 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
5947                          int go)
5948 {
5949         struct wpa_supplicant *group_wpa_s;
5950
5951         if (!wpas_p2p_create_iface(wpa_s)) {
5952                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
5953                         "operations");
5954                 wpa_s->p2p_first_connection_timeout = 0;
5955                 return wpa_s;
5956         }
5957
5958         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
5959                                          WPA_IF_P2P_CLIENT) < 0) {
5960                 wpa_msg_global(wpa_s, MSG_ERROR,
5961                                "P2P: Failed to add group interface");
5962                 return NULL;
5963         }
5964         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
5965         if (group_wpa_s == NULL) {
5966                 wpa_msg_global(wpa_s, MSG_ERROR,
5967                                "P2P: Failed to initialize group interface");
5968                 wpas_p2p_remove_pending_group_interface(wpa_s);
5969                 return NULL;
5970         }
5971
5972         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
5973                 group_wpa_s->ifname);
5974         group_wpa_s->p2p_first_connection_timeout = 0;
5975         return group_wpa_s;
5976 }
5977
5978
5979 /**
5980  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
5981  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5982  * @persistent_group: Whether to create a persistent group
5983  * @freq: Frequency for the group or 0 to indicate no hardcoding
5984  * @vht_center_freq2: segment_1 center frequency for GO operating in VHT 80P80
5985  * @ht40: Start GO with 40 MHz channel width
5986  * @vht:  Start GO with VHT support
5987  * @vht_chwidth: channel bandwidth for GO operating with VHT support
5988  * Returns: 0 on success, -1 on failure
5989  *
5990  * This function creates a new P2P group with the local end as the Group Owner,
5991  * i.e., without using Group Owner Negotiation.
5992  */
5993 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
5994                        int freq, int vht_center_freq2, int ht40, int vht,
5995                        int max_oper_chwidth)
5996 {
5997         struct p2p_go_neg_results params;
5998
5999         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6000                 return -1;
6001
6002         os_free(wpa_s->global->add_psk);
6003         wpa_s->global->add_psk = NULL;
6004
6005         /* Make sure we are not running find during connection establishment */
6006         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
6007         wpas_p2p_stop_find_oper(wpa_s);
6008
6009         freq = wpas_p2p_select_go_freq(wpa_s, freq);
6010         if (freq < 0)
6011                 return -1;
6012
6013         if (wpas_p2p_init_go_params(wpa_s, &params, freq, vht_center_freq2,
6014                                     ht40, vht, max_oper_chwidth, NULL))
6015                 return -1;
6016         if (params.freq &&
6017             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
6018                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
6019                     ieee80211_is_dfs(params.freq)) {
6020                         /*
6021                          * If freq is a DFS channel and DFS is offloaded to the
6022                          * driver, allow P2P GO to use it.
6023                          */
6024                         wpa_printf(MSG_DEBUG,
6025                                    "P2P: %s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to driver",
6026                                 __func__, params.freq);
6027                 } else {
6028                         wpa_printf(MSG_DEBUG,
6029                                    "P2P: The selected channel for GO (%u MHz) is not supported for P2P uses",
6030                                    params.freq);
6031                         return -1;
6032                 }
6033         }
6034         p2p_go_params(wpa_s->global->p2p, &params);
6035         params.persistent_group = persistent_group;
6036
6037         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
6038         if (wpa_s == NULL)
6039                 return -1;
6040         wpas_start_wps_go(wpa_s, &params, 0);
6041
6042         return 0;
6043 }
6044
6045
6046 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
6047                                  struct wpa_ssid *params, int addr_allocated,
6048                                  int freq, int force_scan)
6049 {
6050         struct wpa_ssid *ssid;
6051
6052         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
6053         if (wpa_s == NULL)
6054                 return -1;
6055         if (force_scan)
6056                 os_get_reltime(&wpa_s->scan_min_time);
6057         wpa_s->p2p_last_4way_hs_fail = NULL;
6058
6059         wpa_supplicant_ap_deinit(wpa_s);
6060
6061         ssid = wpa_config_add_network(wpa_s->conf);
6062         if (ssid == NULL)
6063                 return -1;
6064         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
6065         wpa_config_set_network_defaults(ssid);
6066         ssid->temporary = 1;
6067         ssid->proto = WPA_PROTO_RSN;
6068         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
6069         ssid->group_cipher = WPA_CIPHER_CCMP;
6070         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
6071         ssid->ssid = os_malloc(params->ssid_len);
6072         if (ssid->ssid == NULL) {
6073                 wpa_config_remove_network(wpa_s->conf, ssid->id);
6074                 return -1;
6075         }
6076         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
6077         ssid->ssid_len = params->ssid_len;
6078         ssid->p2p_group = 1;
6079         ssid->export_keys = 1;
6080         if (params->psk_set) {
6081                 os_memcpy(ssid->psk, params->psk, 32);
6082                 ssid->psk_set = 1;
6083         }
6084         if (params->passphrase)
6085                 ssid->passphrase = os_strdup(params->passphrase);
6086
6087         wpa_s->show_group_started = 1;
6088         wpa_s->p2p_in_invitation = 1;
6089         wpa_s->p2p_invite_go_freq = freq;
6090
6091         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
6092                              NULL);
6093         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6094                                wpas_p2p_group_formation_timeout,
6095                                wpa_s->parent, NULL);
6096         wpa_supplicant_select_network(wpa_s, ssid);
6097
6098         return 0;
6099 }
6100
6101
6102 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
6103                                   struct wpa_ssid *ssid, int addr_allocated,
6104                                   int force_freq, int neg_freq,
6105                                   int vht_center_freq2, int ht40,
6106                                   int vht, int max_oper_chwidth,
6107                                   const struct p2p_channels *channels,
6108                                   int connection_timeout, int force_scan)
6109 {
6110         struct p2p_go_neg_results params;
6111         int go = 0, freq;
6112
6113         if (ssid->disabled != 2 || ssid->ssid == NULL)
6114                 return -1;
6115
6116         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
6117             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
6118                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
6119                            "already running");
6120                 if (go == 0 &&
6121                     eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6122                                          wpa_s->parent, NULL)) {
6123                         /*
6124                          * This can happen if Invitation Response frame was lost
6125                          * and the peer (GO of a persistent group) tries to
6126                          * invite us again. Reschedule the timeout to avoid
6127                          * terminating the wait for the connection too early
6128                          * since we now know that the peer is still trying to
6129                          * invite us instead of having already started the GO.
6130                          */
6131                         wpa_printf(MSG_DEBUG,
6132                                    "P2P: Reschedule group formation timeout since peer is still trying to invite us");
6133                         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6134                                                wpas_p2p_group_formation_timeout,
6135                                                wpa_s->parent, NULL);
6136                 }
6137                 return 0;
6138         }
6139
6140         os_free(wpa_s->global->add_psk);
6141         wpa_s->global->add_psk = NULL;
6142
6143         /* Make sure we are not running find during connection establishment */
6144         wpas_p2p_stop_find_oper(wpa_s);
6145
6146         wpa_s->p2p_fallback_to_go_neg = 0;
6147
6148         if (ssid->mode == WPAS_MODE_P2P_GO) {
6149                 if (force_freq > 0) {
6150                         freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
6151                         if (freq < 0)
6152                                 return -1;
6153                 } else {
6154                         freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
6155                         if (freq < 0 ||
6156                             (freq > 0 && !freq_included(wpa_s, channels, freq)))
6157                                 freq = 0;
6158                 }
6159         } else if (ssid->mode == WPAS_MODE_INFRA) {
6160                 freq = neg_freq;
6161                 if (freq <= 0 || !freq_included(wpa_s, channels, freq)) {
6162                         struct os_reltime now;
6163                         struct wpa_bss *bss =
6164                                 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid);
6165
6166                         os_get_reltime(&now);
6167                         if (bss &&
6168                             !os_reltime_expired(&now, &bss->last_update, 5) &&
6169                             freq_included(wpa_s, channels, bss->freq))
6170                                 freq = bss->freq;
6171                         else
6172                                 freq = 0;
6173                 }
6174
6175                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq,
6176                                              force_scan);
6177         } else {
6178                 return -1;
6179         }
6180
6181         if (wpas_p2p_init_go_params(wpa_s, &params, freq, vht_center_freq2,
6182                                     ht40, vht, max_oper_chwidth, channels))
6183                 return -1;
6184
6185         params.role_go = 1;
6186         params.psk_set = ssid->psk_set;
6187         if (params.psk_set)
6188                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
6189         if (ssid->passphrase) {
6190                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
6191                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
6192                                    "persistent group");
6193                         return -1;
6194                 }
6195                 os_strlcpy(params.passphrase, ssid->passphrase,
6196                            sizeof(params.passphrase));
6197         }
6198         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
6199         params.ssid_len = ssid->ssid_len;
6200         params.persistent_group = 1;
6201
6202         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
6203         if (wpa_s == NULL)
6204                 return -1;
6205
6206         p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS);
6207
6208         wpa_s->p2p_first_connection_timeout = connection_timeout;
6209         wpas_start_wps_go(wpa_s, &params, 0);
6210
6211         return 0;
6212 }
6213
6214
6215 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
6216                                struct wpabuf *proberesp_ies)
6217 {
6218         struct wpa_supplicant *wpa_s = ctx;
6219         if (wpa_s->ap_iface) {
6220                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
6221                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
6222                         wpabuf_free(beacon_ies);
6223                         wpabuf_free(proberesp_ies);
6224                         return;
6225                 }
6226                 if (beacon_ies) {
6227                         wpabuf_free(hapd->p2p_beacon_ie);
6228                         hapd->p2p_beacon_ie = beacon_ies;
6229                 }
6230                 wpabuf_free(hapd->p2p_probe_resp_ie);
6231                 hapd->p2p_probe_resp_ie = proberesp_ies;
6232         } else {
6233                 wpabuf_free(beacon_ies);
6234                 wpabuf_free(proberesp_ies);
6235         }
6236         wpa_supplicant_ap_update_beacon(wpa_s);
6237 }
6238
6239
6240 static void wpas_p2p_idle_update(void *ctx, int idle)
6241 {
6242         struct wpa_supplicant *wpa_s = ctx;
6243         if (!wpa_s->ap_iface)
6244                 return;
6245         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
6246         if (idle) {
6247                 if (wpa_s->global->p2p_fail_on_wps_complete &&
6248                     wpa_s->p2p_in_provisioning) {
6249                         wpas_p2p_grpform_fail_after_wps(wpa_s);
6250                         return;
6251                 }
6252                 wpas_p2p_set_group_idle_timeout(wpa_s);
6253         } else
6254                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
6255 }
6256
6257
6258 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
6259                                        struct wpa_ssid *ssid)
6260 {
6261         struct p2p_group *group;
6262         struct p2p_group_config *cfg;
6263
6264         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6265                 return NULL;
6266
6267         cfg = os_zalloc(sizeof(*cfg));
6268         if (cfg == NULL)
6269                 return NULL;
6270
6271         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
6272                 cfg->persistent_group = 2;
6273         else if (ssid->p2p_persistent_group)
6274                 cfg->persistent_group = 1;
6275         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
6276         if (wpa_s->max_stations &&
6277             wpa_s->max_stations < wpa_s->conf->max_num_sta)
6278                 cfg->max_clients = wpa_s->max_stations;
6279         else
6280                 cfg->max_clients = wpa_s->conf->max_num_sta;
6281         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
6282         cfg->ssid_len = ssid->ssid_len;
6283         cfg->freq = ssid->frequency;
6284         cfg->cb_ctx = wpa_s;
6285         cfg->ie_update = wpas_p2p_ie_update;
6286         cfg->idle_update = wpas_p2p_idle_update;
6287
6288         group = p2p_group_init(wpa_s->global->p2p, cfg);
6289         if (group == NULL)
6290                 os_free(cfg);
6291         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
6292                 p2p_group_notif_formation_done(group);
6293         wpa_s->p2p_group = group;
6294         return group;
6295 }
6296
6297
6298 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6299                           int registrar)
6300 {
6301         struct wpa_ssid *ssid = wpa_s->current_ssid;
6302
6303         if (!wpa_s->p2p_in_provisioning) {
6304                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
6305                            "provisioning not in progress");
6306                 return;
6307         }
6308
6309         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6310                 u8 go_dev_addr[ETH_ALEN];
6311                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
6312                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6313                                           ssid->ssid_len);
6314                 /* Clear any stored provisioning info */
6315                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
6316         }
6317
6318         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
6319                              NULL);
6320         wpa_s->p2p_go_group_formation_completed = 1;
6321         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6322                 /*
6323                  * Use a separate timeout for initial data connection to
6324                  * complete to allow the group to be removed automatically if
6325                  * something goes wrong in this step before the P2P group idle
6326                  * timeout mechanism is taken into use.
6327                  */
6328                 wpa_dbg(wpa_s, MSG_DEBUG,
6329                         "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
6330                         P2P_MAX_INITIAL_CONN_WAIT);
6331                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6332                                        wpas_p2p_group_formation_timeout,
6333                                        wpa_s->parent, NULL);
6334         } else if (ssid) {
6335                 /*
6336                  * Use a separate timeout for initial data connection to
6337                  * complete to allow the group to be removed automatically if
6338                  * the client does not complete data connection successfully.
6339                  */
6340                 wpa_dbg(wpa_s, MSG_DEBUG,
6341                         "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
6342                         P2P_MAX_INITIAL_CONN_WAIT_GO);
6343                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
6344                                        wpas_p2p_group_formation_timeout,
6345                                        wpa_s->parent, NULL);
6346                 /*
6347                  * Complete group formation on first successful data connection
6348                  */
6349                 wpa_s->p2p_go_group_formation_completed = 0;
6350         }
6351         if (wpa_s->global->p2p)
6352                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
6353         wpas_group_formation_completed(wpa_s, 1, 0);
6354 }
6355
6356
6357 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
6358                          struct wps_event_fail *fail)
6359 {
6360         if (!wpa_s->p2p_in_provisioning) {
6361                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
6362                            "provisioning not in progress");
6363                 return;
6364         }
6365
6366         if (wpa_s->go_params) {
6367                 p2p_clear_provisioning_info(
6368                         wpa_s->global->p2p,
6369                         wpa_s->go_params->peer_device_addr);
6370         }
6371
6372         wpas_notify_p2p_wps_failed(wpa_s, fail);
6373
6374         if (wpa_s == wpa_s->global->p2p_group_formation) {
6375                 /*
6376                  * Allow some time for the failed WPS negotiation exchange to
6377                  * complete, but remove the group since group formation cannot
6378                  * succeed after provisioning failure.
6379                  */
6380                 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
6381                 wpa_s->global->p2p_fail_on_wps_complete = 1;
6382                 eloop_deplete_timeout(0, 50000,
6383                                       wpas_p2p_group_formation_timeout,
6384                                       wpa_s->parent, NULL);
6385         }
6386 }
6387
6388
6389 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
6390 {
6391         if (!wpa_s->global->p2p_fail_on_wps_complete ||
6392             !wpa_s->p2p_in_provisioning)
6393                 return 0;
6394
6395         wpas_p2p_grpform_fail_after_wps(wpa_s);
6396
6397         return 1;
6398 }
6399
6400
6401 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6402                        const char *config_method,
6403                        enum wpas_p2p_prov_disc_use use,
6404                        struct p2ps_provision *p2ps_prov)
6405 {
6406         u16 config_methods;
6407
6408         wpa_s->global->pending_p2ps_group = 0;
6409         wpa_s->global->pending_p2ps_group_freq = 0;
6410         wpa_s->p2p_fallback_to_go_neg = 0;
6411         wpa_s->pending_pd_use = NORMAL_PD;
6412         if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) {
6413                 p2ps_prov->conncap = p2ps_group_capability(
6414                         wpa_s, P2PS_SETUP_NONE, p2ps_prov->role,
6415                         &p2ps_prov->force_freq, &p2ps_prov->pref_freq);
6416
6417                 wpa_printf(MSG_DEBUG,
6418                            "P2P: %s conncap: %d - ASP parsed: %x %x %d %s",
6419                            __func__, p2ps_prov->conncap,
6420                            p2ps_prov->adv_id, p2ps_prov->conncap,
6421                            p2ps_prov->status, p2ps_prov->info);
6422
6423                 config_methods = 0;
6424         } else if (os_strncmp(config_method, "display", 7) == 0)
6425                 config_methods = WPS_CONFIG_DISPLAY;
6426         else if (os_strncmp(config_method, "keypad", 6) == 0)
6427                 config_methods = WPS_CONFIG_KEYPAD;
6428         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
6429                  os_strncmp(config_method, "pushbutton", 10) == 0)
6430                 config_methods = WPS_CONFIG_PUSHBUTTON;
6431         else {
6432                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
6433                 os_free(p2ps_prov);
6434                 return -1;
6435         }
6436
6437         if (use == WPAS_P2P_PD_AUTO) {
6438                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
6439                 wpa_s->pending_pd_config_methods = config_methods;
6440                 wpa_s->p2p_auto_pd = 1;
6441                 wpa_s->p2p_auto_join = 0;
6442                 wpa_s->pending_pd_before_join = 0;
6443                 wpa_s->auto_pd_scan_retry = 0;
6444                 wpas_p2p_stop_find(wpa_s);
6445                 wpa_s->p2p_join_scan_count = 0;
6446                 os_get_reltime(&wpa_s->p2p_auto_started);
6447                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
6448                            wpa_s->p2p_auto_started.sec,
6449                            wpa_s->p2p_auto_started.usec);
6450                 wpas_p2p_join_scan(wpa_s, NULL);
6451                 return 0;
6452         }
6453
6454         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) {
6455                 os_free(p2ps_prov);
6456                 return -1;
6457         }
6458
6459         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov,
6460                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
6461                                  0, 1);
6462 }
6463
6464
6465 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
6466                               char *end)
6467 {
6468         return p2p_scan_result_text(ies, ies_len, buf, end);
6469 }
6470
6471
6472 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
6473 {
6474         if (!offchannel_pending_action_tx(wpa_s))
6475                 return;
6476
6477         if (wpa_s->p2p_send_action_work)
6478                 wpas_p2p_free_send_action_work(wpa_s);
6479
6480         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
6481                    "operation request");
6482         offchannel_clear_pending_action_tx(wpa_s);
6483 }
6484
6485
6486 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
6487                   enum p2p_discovery_type type,
6488                   unsigned int num_req_dev_types, const u8 *req_dev_types,
6489                   const u8 *dev_id, unsigned int search_delay,
6490                   u8 seek_cnt, const char **seek_string, int freq)
6491 {
6492         wpas_p2p_clear_pending_action_tx(wpa_s);
6493         wpa_s->p2p_long_listen = 0;
6494
6495         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
6496             wpa_s->p2p_in_provisioning)
6497                 return -1;
6498
6499         wpa_supplicant_cancel_sched_scan(wpa_s);
6500
6501         return p2p_find(wpa_s->global->p2p, timeout, type,
6502                         num_req_dev_types, req_dev_types, dev_id,
6503                         search_delay, seek_cnt, seek_string, freq);
6504 }
6505
6506
6507 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s,
6508                                             struct wpa_scan_results *scan_res)
6509 {
6510         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6511
6512         if (wpa_s->p2p_scan_work) {
6513                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
6514                 wpa_s->p2p_scan_work = NULL;
6515                 radio_work_done(work);
6516         }
6517
6518         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6519                 return;
6520
6521         /*
6522          * Indicate that results have been processed so that the P2P module can
6523          * continue pending tasks.
6524          */
6525         p2p_scan_res_handled(wpa_s->global->p2p);
6526 }
6527
6528
6529 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
6530 {
6531         wpas_p2p_clear_pending_action_tx(wpa_s);
6532         wpa_s->p2p_long_listen = 0;
6533         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6534         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
6535
6536         if (wpa_s->global->p2p)
6537                 p2p_stop_find(wpa_s->global->p2p);
6538
6539         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
6540                 wpa_printf(MSG_DEBUG,
6541                            "P2P: Do not consider the scan results after stop_find");
6542                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search;
6543         }
6544 }
6545
6546
6547 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
6548 {
6549         wpas_p2p_stop_find_oper(wpa_s);
6550         if (!wpa_s->global->pending_group_iface_for_p2ps)
6551                 wpas_p2p_remove_pending_group_interface(wpa_s);
6552 }
6553
6554
6555 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
6556 {
6557         struct wpa_supplicant *wpa_s = eloop_ctx;
6558         wpa_s->p2p_long_listen = 0;
6559 }
6560
6561
6562 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
6563 {
6564         int res;
6565
6566         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6567                 return -1;
6568
6569         wpa_supplicant_cancel_sched_scan(wpa_s);
6570         wpas_p2p_clear_pending_action_tx(wpa_s);
6571
6572         if (timeout == 0) {
6573                 /*
6574                  * This is a request for unlimited Listen state. However, at
6575                  * least for now, this is mapped to a Listen state for one
6576                  * hour.
6577                  */
6578                 timeout = 3600;
6579         }
6580         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6581         wpa_s->p2p_long_listen = 0;
6582
6583         /*
6584          * Stop previous find/listen operation to avoid trying to request a new
6585          * remain-on-channel operation while the driver is still running the
6586          * previous one.
6587          */
6588         if (wpa_s->global->p2p)
6589                 p2p_stop_find(wpa_s->global->p2p);
6590
6591         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
6592         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
6593                 wpa_s->p2p_long_listen = timeout * 1000;
6594                 eloop_register_timeout(timeout, 0,
6595                                        wpas_p2p_long_listen_timeout,
6596                                        wpa_s, NULL);
6597         }
6598
6599         return res;
6600 }
6601
6602
6603 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
6604                           u8 *buf, size_t len, int p2p_group)
6605 {
6606         struct wpabuf *p2p_ie;
6607         int ret;
6608
6609         if (wpa_s->global->p2p_disabled)
6610                 return -1;
6611         /*
6612          * Advertize mandatory cross connection capability even on
6613          * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP.
6614          */
6615         if (wpa_s->conf->p2p_disabled && p2p_group)
6616                 return -1;
6617         if (wpa_s->global->p2p == NULL)
6618                 return -1;
6619         if (bss == NULL)
6620                 return -1;
6621
6622         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
6623         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
6624                                p2p_group, p2p_ie);
6625         wpabuf_free(p2p_ie);
6626
6627         return ret;
6628 }
6629
6630
6631 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
6632                           const u8 *dst, const u8 *bssid,
6633                           const u8 *ie, size_t ie_len,
6634                           unsigned int rx_freq, int ssi_signal)
6635 {
6636         if (wpa_s->global->p2p_disabled)
6637                 return 0;
6638         if (wpa_s->global->p2p == NULL)
6639                 return 0;
6640
6641         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
6642                                  ie, ie_len, rx_freq)) {
6643         case P2P_PREQ_NOT_P2P:
6644                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
6645                                  ssi_signal);
6646                 /* fall through */
6647         case P2P_PREQ_MALFORMED:
6648         case P2P_PREQ_NOT_LISTEN:
6649         case P2P_PREQ_NOT_PROCESSED:
6650         default: /* make gcc happy */
6651                 return 0;
6652         case P2P_PREQ_PROCESSED:
6653                 return 1;
6654         }
6655 }
6656
6657
6658 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
6659                         const u8 *sa, const u8 *bssid,
6660                         u8 category, const u8 *data, size_t len, int freq)
6661 {
6662         if (wpa_s->global->p2p_disabled)
6663                 return;
6664         if (wpa_s->global->p2p == NULL)
6665                 return;
6666
6667         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
6668                       freq);
6669 }
6670
6671
6672 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
6673 {
6674         if (wpa_s->global->p2p_disabled)
6675                 return;
6676         if (wpa_s->global->p2p == NULL)
6677                 return;
6678
6679         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
6680 }
6681
6682
6683 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
6684 {
6685         p2p_group_deinit(wpa_s->p2p_group);
6686         wpa_s->p2p_group = NULL;
6687
6688         wpa_s->ap_configured_cb = NULL;
6689         wpa_s->ap_configured_cb_ctx = NULL;
6690         wpa_s->ap_configured_cb_data = NULL;
6691         wpa_s->connect_without_scan = NULL;
6692 }
6693
6694
6695 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
6696 {
6697         wpa_s->p2p_long_listen = 0;
6698
6699         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6700                 return -1;
6701
6702         return p2p_reject(wpa_s->global->p2p, addr);
6703 }
6704
6705
6706 /* Invite to reinvoke a persistent group */
6707 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6708                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
6709                     int vht_center_freq2, int ht40, int vht, int max_chwidth,
6710                     int pref_freq)
6711 {
6712         enum p2p_invite_role role;
6713         u8 *bssid = NULL;
6714         int force_freq = 0;
6715         int res;
6716         int no_pref_freq_given = pref_freq == 0;
6717         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6718
6719         wpa_s->global->p2p_invite_group = NULL;
6720         if (peer_addr)
6721                 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
6722         else
6723                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
6724
6725         wpa_s->p2p_persistent_go_freq = freq;
6726         wpa_s->p2p_go_ht40 = !!ht40;
6727         wpa_s->p2p_go_vht = !!vht;
6728         wpa_s->p2p_go_max_oper_chwidth = max_chwidth;
6729         wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
6730         if (ssid->mode == WPAS_MODE_P2P_GO) {
6731                 role = P2P_INVITE_ROLE_GO;
6732                 if (peer_addr == NULL) {
6733                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
6734                                    "address in invitation command");
6735                         return -1;
6736                 }
6737                 if (wpas_p2p_create_iface(wpa_s)) {
6738                         if (wpas_p2p_add_group_interface(wpa_s,
6739                                                          WPA_IF_P2P_GO) < 0) {
6740                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
6741                                            "allocate a new interface for the "
6742                                            "group");
6743                                 return -1;
6744                         }
6745                         bssid = wpa_s->pending_interface_addr;
6746                 } else
6747                         bssid = wpa_s->own_addr;
6748         } else {
6749                 role = P2P_INVITE_ROLE_CLIENT;
6750                 peer_addr = ssid->bssid;
6751         }
6752         wpa_s->pending_invite_ssid_id = ssid->id;
6753
6754         size = P2P_MAX_PREF_CHANNELS;
6755         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6756                                    role == P2P_INVITE_ROLE_GO,
6757                                    pref_freq_list, &size);
6758         if (res)
6759                 return res;
6760         p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
6761
6762         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6763                 return -1;
6764
6765         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
6766             no_pref_freq_given && pref_freq > 0 &&
6767             wpa_s->num_multichan_concurrent > 1 &&
6768             wpas_p2p_num_unused_channels(wpa_s) > 0) {
6769                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
6770                            pref_freq);
6771                 pref_freq = 0;
6772         }
6773
6774         /*
6775          * Stop any find/listen operations before invitation and possibly
6776          * connection establishment.
6777          */
6778         wpas_p2p_stop_find_oper(wpa_s);
6779
6780         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6781                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
6782                           1, pref_freq, -1);
6783 }
6784
6785
6786 /* Invite to join an active group */
6787 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
6788                           const u8 *peer_addr, const u8 *go_dev_addr)
6789 {
6790         struct wpa_global *global = wpa_s->global;
6791         enum p2p_invite_role role;
6792         u8 *bssid = NULL;
6793         struct wpa_ssid *ssid;
6794         int persistent;
6795         int freq = 0, force_freq = 0, pref_freq = 0;
6796         int res;
6797         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6798
6799         wpa_s->p2p_persistent_go_freq = 0;
6800         wpa_s->p2p_go_ht40 = 0;
6801         wpa_s->p2p_go_vht = 0;
6802         wpa_s->p2p_go_vht_center_freq2 = 0;
6803         wpa_s->p2p_go_max_oper_chwidth = 0;
6804
6805         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6806                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
6807                         break;
6808         }
6809         if (wpa_s == NULL) {
6810                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
6811                 return -1;
6812         }
6813
6814         ssid = wpa_s->current_ssid;
6815         if (ssid == NULL) {
6816                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
6817                            "invitation");
6818                 return -1;
6819         }
6820
6821         wpa_s->global->p2p_invite_group = wpa_s;
6822         persistent = ssid->p2p_persistent_group &&
6823                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
6824                                         ssid->ssid, ssid->ssid_len);
6825
6826         if (ssid->mode == WPAS_MODE_P2P_GO) {
6827                 role = P2P_INVITE_ROLE_ACTIVE_GO;
6828                 bssid = wpa_s->own_addr;
6829                 if (go_dev_addr == NULL)
6830                         go_dev_addr = wpa_s->global->p2p_dev_addr;
6831                 freq = ssid->frequency;
6832         } else {
6833                 role = P2P_INVITE_ROLE_CLIENT;
6834                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
6835                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
6836                                    "invite to current group");
6837                         return -1;
6838                 }
6839                 bssid = wpa_s->bssid;
6840                 if (go_dev_addr == NULL &&
6841                     !is_zero_ether_addr(wpa_s->go_dev_addr))
6842                         go_dev_addr = wpa_s->go_dev_addr;
6843                 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6844                         (int) wpa_s->assoc_freq;
6845         }
6846         wpa_s->parent->pending_invite_ssid_id = -1;
6847
6848         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6849                 return -1;
6850
6851         size = P2P_MAX_PREF_CHANNELS;
6852         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6853                                    role == P2P_INVITE_ROLE_ACTIVE_GO,
6854                                    pref_freq_list, &size);
6855         if (res)
6856                 return res;
6857         wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
6858
6859         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6860                           ssid->ssid, ssid->ssid_len, force_freq,
6861                           go_dev_addr, persistent, pref_freq, -1);
6862 }
6863
6864
6865 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
6866 {
6867         struct wpa_ssid *ssid = wpa_s->current_ssid;
6868         u8 go_dev_addr[ETH_ALEN];
6869         int network_id = -1;
6870         int persistent;
6871         int freq;
6872         u8 ip[3 * 4];
6873         char ip_addr[100];
6874
6875         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
6876                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6877                                      wpa_s->parent, NULL);
6878         }
6879
6880         if (!wpa_s->show_group_started || !ssid)
6881                 return;
6882
6883         wpa_s->show_group_started = 0;
6884
6885         os_memset(go_dev_addr, 0, ETH_ALEN);
6886         if (ssid->bssid_set)
6887                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
6888         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6889                                                ssid->ssid_len);
6890         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
6891
6892         if (wpa_s->global->p2p_group_formation == wpa_s)
6893                 wpa_s->global->p2p_group_formation = NULL;
6894
6895         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6896                 (int) wpa_s->assoc_freq;
6897
6898         ip_addr[0] = '\0';
6899         if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
6900                 int res;
6901
6902                 res = os_snprintf(ip_addr, sizeof(ip_addr),
6903                                   " ip_addr=%u.%u.%u.%u "
6904                                   "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
6905                                   ip[0], ip[1], ip[2], ip[3],
6906                                   ip[4], ip[5], ip[6], ip[7],
6907                                   ip[8], ip[9], ip[10], ip[11]);
6908                 if (os_snprintf_error(sizeof(ip_addr), res))
6909                         ip_addr[0] = '\0';
6910         }
6911
6912         wpas_p2p_group_started(wpa_s, 0, ssid, freq,
6913                                ssid->passphrase == NULL && ssid->psk_set ?
6914                                ssid->psk : NULL,
6915                                ssid->passphrase, go_dev_addr, persistent,
6916                                ip_addr);
6917
6918         if (persistent)
6919                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
6920                                                              ssid, go_dev_addr);
6921         if (network_id < 0)
6922                 network_id = ssid->id;
6923         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
6924 }
6925
6926
6927 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
6928                           u32 interval1, u32 duration2, u32 interval2)
6929 {
6930         int ret;
6931
6932         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6933                 return -1;
6934
6935         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
6936             wpa_s->current_ssid == NULL ||
6937             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
6938                 return -1;
6939
6940         ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
6941                                wpa_s->own_addr, wpa_s->assoc_freq,
6942                                duration1, interval1, duration2, interval2);
6943         if (ret == 0)
6944                 wpa_s->waiting_presence_resp = 1;
6945
6946         return ret;
6947 }
6948
6949
6950 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
6951                         unsigned int interval)
6952 {
6953         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6954                 return -1;
6955
6956         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
6957 }
6958
6959
6960 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
6961 {
6962         if (wpa_s->current_ssid == NULL) {
6963                 /*
6964                  * current_ssid can be cleared when P2P client interface gets
6965                  * disconnected, so assume this interface was used as P2P
6966                  * client.
6967                  */
6968                 return 1;
6969         }
6970         return wpa_s->current_ssid->p2p_group &&
6971                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
6972 }
6973
6974
6975 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
6976 {
6977         struct wpa_supplicant *wpa_s = eloop_ctx;
6978
6979         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
6980                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
6981                            "disabled");
6982                 return;
6983         }
6984
6985         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
6986                    "group");
6987         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
6988 }
6989
6990
6991 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
6992 {
6993         int timeout;
6994
6995         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6996                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6997
6998         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6999                 return;
7000
7001         timeout = wpa_s->conf->p2p_group_idle;
7002         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
7003             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
7004             timeout = P2P_MAX_CLIENT_IDLE;
7005
7006         if (timeout == 0)
7007                 return;
7008
7009         if (timeout < 0) {
7010                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
7011                         timeout = 0; /* special client mode no-timeout */
7012                 else
7013                         return;
7014         }
7015
7016         if (wpa_s->p2p_in_provisioning) {
7017                 /*
7018                  * Use the normal group formation timeout during the
7019                  * provisioning phase to avoid terminating this process too
7020                  * early due to group idle timeout.
7021                  */
7022                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7023                            "during provisioning");
7024                 return;
7025         }
7026
7027         if (wpa_s->show_group_started) {
7028                 /*
7029                  * Use the normal group formation timeout between the end of
7030                  * the provisioning phase and completion of 4-way handshake to
7031                  * avoid terminating this process too early due to group idle
7032                  * timeout.
7033                  */
7034                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7035                            "while waiting for initial 4-way handshake to "
7036                            "complete");
7037                 return;
7038         }
7039
7040         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
7041                    timeout);
7042         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
7043                                wpa_s, NULL);
7044 }
7045
7046
7047 /* Returns 1 if the interface was removed */
7048 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7049                           u16 reason_code, const u8 *ie, size_t ie_len,
7050                           int locally_generated)
7051 {
7052         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7053                 return 0;
7054
7055         if (!locally_generated)
7056                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7057                                  ie_len);
7058
7059         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
7060             wpa_s->current_ssid &&
7061             wpa_s->current_ssid->p2p_group &&
7062             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
7063                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
7064                            "session is ending");
7065                 if (wpas_p2p_group_delete(wpa_s,
7066                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
7067                     > 0)
7068                         return 1;
7069         }
7070
7071         return 0;
7072 }
7073
7074
7075 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7076                              u16 reason_code, const u8 *ie, size_t ie_len,
7077                              int locally_generated)
7078 {
7079         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7080                 return;
7081
7082         if (!locally_generated)
7083                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7084                                    ie_len);
7085 }
7086
7087
7088 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
7089 {
7090         struct p2p_data *p2p = wpa_s->global->p2p;
7091
7092         if (p2p == NULL)
7093                 return;
7094
7095         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
7096                 return;
7097
7098         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
7099                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
7100
7101         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
7102                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
7103
7104         if (wpa_s->wps &&
7105             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
7106                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
7107
7108         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
7109                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
7110
7111         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
7112                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
7113                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
7114                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
7115                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
7116         }
7117
7118         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
7119                 p2p_set_sec_dev_types(p2p,
7120                                       (void *) wpa_s->conf->sec_device_type,
7121                                       wpa_s->conf->num_sec_device_types);
7122
7123         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
7124                 int i;
7125                 p2p_remove_wps_vendor_extensions(p2p);
7126                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
7127                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
7128                                 continue;
7129                         p2p_add_wps_vendor_extension(
7130                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
7131                 }
7132         }
7133
7134         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
7135             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
7136                 char country[3];
7137                 country[0] = wpa_s->conf->country[0];
7138                 country[1] = wpa_s->conf->country[1];
7139                 country[2] = 0x04;
7140                 p2p_set_country(p2p, country);
7141         }
7142
7143         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
7144                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
7145                                      wpa_s->conf->p2p_ssid_postfix ?
7146                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
7147                                      0);
7148         }
7149
7150         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
7151                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
7152
7153         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
7154                 u8 reg_class, channel;
7155                 int ret;
7156                 unsigned int r;
7157                 u8 channel_forced;
7158
7159                 if (wpa_s->conf->p2p_listen_reg_class &&
7160                     wpa_s->conf->p2p_listen_channel) {
7161                         reg_class = wpa_s->conf->p2p_listen_reg_class;
7162                         channel = wpa_s->conf->p2p_listen_channel;
7163                         channel_forced = 1;
7164                 } else {
7165                         reg_class = 81;
7166                         /*
7167                          * Pick one of the social channels randomly as the
7168                          * listen channel.
7169                          */
7170                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7171                                 channel = 1;
7172                         else
7173                                 channel = 1 + (r % 3) * 5;
7174                         channel_forced = 0;
7175                 }
7176                 ret = p2p_set_listen_channel(p2p, reg_class, channel,
7177                                              channel_forced);
7178                 if (ret)
7179                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
7180                                    "failed: %d", ret);
7181         }
7182         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
7183                 u8 op_reg_class, op_channel, cfg_op_channel;
7184                 int ret = 0;
7185                 unsigned int r;
7186                 if (wpa_s->conf->p2p_oper_reg_class &&
7187                     wpa_s->conf->p2p_oper_channel) {
7188                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
7189                         op_channel = wpa_s->conf->p2p_oper_channel;
7190                         cfg_op_channel = 1;
7191                 } else {
7192                         op_reg_class = 81;
7193                         /*
7194                          * Use random operation channel from (1, 6, 11)
7195                          *if no other preference is indicated.
7196                          */
7197                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7198                                 op_channel = 1;
7199                         else
7200                                 op_channel = 1 + (r % 3) * 5;
7201                         cfg_op_channel = 0;
7202                 }
7203                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
7204                                            cfg_op_channel);
7205                 if (ret)
7206                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
7207                                    "failed: %d", ret);
7208         }
7209
7210         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
7211                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
7212                                       wpa_s->conf->p2p_pref_chan) < 0) {
7213                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
7214                                    "update failed");
7215                 }
7216
7217                 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
7218                         wpa_printf(MSG_ERROR, "P2P: No GO channel list "
7219                                    "update failed");
7220                 }
7221         }
7222
7223         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN)
7224                 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len);
7225 }
7226
7227
7228 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
7229                      int duration)
7230 {
7231         if (!wpa_s->ap_iface)
7232                 return -1;
7233         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
7234                                    duration);
7235 }
7236
7237
7238 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
7239 {
7240         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7241                 return -1;
7242
7243         wpa_s->global->cross_connection = enabled;
7244         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
7245
7246         if (!enabled) {
7247                 struct wpa_supplicant *iface;
7248
7249                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7250                 {
7251                         if (iface->cross_connect_enabled == 0)
7252                                 continue;
7253
7254                         iface->cross_connect_enabled = 0;
7255                         iface->cross_connect_in_use = 0;
7256                         wpa_msg_global(iface->parent, MSG_INFO,
7257                                        P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7258                                        iface->ifname,
7259                                        iface->cross_connect_uplink);
7260                 }
7261         }
7262
7263         return 0;
7264 }
7265
7266
7267 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
7268 {
7269         struct wpa_supplicant *iface;
7270
7271         if (!uplink->global->cross_connection)
7272                 return;
7273
7274         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7275                 if (!iface->cross_connect_enabled)
7276                         continue;
7277                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7278                     0)
7279                         continue;
7280                 if (iface->ap_iface == NULL)
7281                         continue;
7282                 if (iface->cross_connect_in_use)
7283                         continue;
7284
7285                 iface->cross_connect_in_use = 1;
7286                 wpa_msg_global(iface->parent, MSG_INFO,
7287                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7288                                iface->ifname, iface->cross_connect_uplink);
7289         }
7290 }
7291
7292
7293 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
7294 {
7295         struct wpa_supplicant *iface;
7296
7297         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7298                 if (!iface->cross_connect_enabled)
7299                         continue;
7300                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7301                     0)
7302                         continue;
7303                 if (!iface->cross_connect_in_use)
7304                         continue;
7305
7306                 wpa_msg_global(iface->parent, MSG_INFO,
7307                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7308                                iface->ifname, iface->cross_connect_uplink);
7309                 iface->cross_connect_in_use = 0;
7310         }
7311 }
7312
7313
7314 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
7315 {
7316         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
7317             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
7318             wpa_s->cross_connect_disallowed)
7319                 wpas_p2p_disable_cross_connect(wpa_s);
7320         else
7321                 wpas_p2p_enable_cross_connect(wpa_s);
7322         if (!wpa_s->ap_iface &&
7323             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7324                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7325 }
7326
7327
7328 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
7329 {
7330         wpas_p2p_disable_cross_connect(wpa_s);
7331         if (!wpa_s->ap_iface &&
7332             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
7333                                          wpa_s, NULL))
7334                 wpas_p2p_set_group_idle_timeout(wpa_s);
7335 }
7336
7337
7338 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
7339 {
7340         struct wpa_supplicant *iface;
7341
7342         if (!wpa_s->global->cross_connection)
7343                 return;
7344
7345         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7346                 if (iface == wpa_s)
7347                         continue;
7348                 if (iface->drv_flags &
7349                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
7350                         continue;
7351                 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) &&
7352                     iface != wpa_s->parent)
7353                         continue;
7354
7355                 wpa_s->cross_connect_enabled = 1;
7356                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
7357                            sizeof(wpa_s->cross_connect_uplink));
7358                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
7359                            "%s to %s whenever uplink is available",
7360                            wpa_s->ifname, wpa_s->cross_connect_uplink);
7361
7362                 if (iface->ap_iface || iface->current_ssid == NULL ||
7363                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
7364                     iface->cross_connect_disallowed ||
7365                     iface->wpa_state != WPA_COMPLETED)
7366                         break;
7367
7368                 wpa_s->cross_connect_in_use = 1;
7369                 wpa_msg_global(wpa_s->parent, MSG_INFO,
7370                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7371                                wpa_s->ifname, wpa_s->cross_connect_uplink);
7372                 break;
7373         }
7374 }
7375
7376
7377 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
7378 {
7379         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
7380             !wpa_s->p2p_in_provisioning)
7381                 return 0; /* not P2P client operation */
7382
7383         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
7384                    "session overlap");
7385         if (wpa_s != wpa_s->parent)
7386                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
7387         wpas_p2p_group_formation_failed(wpa_s, 0);
7388         return 1;
7389 }
7390
7391
7392 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
7393 {
7394         struct wpa_supplicant *wpa_s = eloop_ctx;
7395         wpas_p2p_notif_pbc_overlap(wpa_s);
7396 }
7397
7398
7399 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s,
7400                                   enum wpas_p2p_channel_update_trig trig)
7401 {
7402         struct p2p_channels chan, cli_chan;
7403         struct wpa_used_freq_data *freqs = NULL;
7404         unsigned int num = wpa_s->num_multichan_concurrent;
7405
7406         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
7407                 return;
7408
7409         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
7410         if (!freqs)
7411                 return;
7412
7413         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
7414
7415         os_memset(&chan, 0, sizeof(chan));
7416         os_memset(&cli_chan, 0, sizeof(cli_chan));
7417         if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
7418                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
7419                            "channel list");
7420                 return;
7421         }
7422
7423         p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
7424
7425         wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
7426
7427         /*
7428          * The used frequencies map changed, so it is possible that a GO is
7429          * using a channel that is no longer valid for P2P use. It is also
7430          * possible that due to policy consideration, it would be preferable to
7431          * move it to a frequency already used by other station interfaces.
7432          */
7433         wpas_p2p_consider_moving_gos(wpa_s, freqs, num, trig);
7434
7435         os_free(freqs);
7436 }
7437
7438
7439 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
7440                                      struct wpa_scan_results *scan_res)
7441 {
7442         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
7443 }
7444
7445
7446 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
7447 {
7448         struct wpa_global *global = wpa_s->global;
7449         int found = 0;
7450         const u8 *peer;
7451
7452         if (global->p2p == NULL)
7453                 return -1;
7454
7455         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
7456
7457         if (wpa_s->pending_interface_name[0] &&
7458             !is_zero_ether_addr(wpa_s->pending_interface_addr))
7459                 found = 1;
7460
7461         peer = p2p_get_go_neg_peer(global->p2p);
7462         if (peer) {
7463                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
7464                            MACSTR, MAC2STR(peer));
7465                 p2p_unauthorize(global->p2p, peer);
7466                 found = 1;
7467         }
7468
7469         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
7470                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
7471                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
7472                 found = 1;
7473         }
7474
7475         if (wpa_s->pending_pd_before_join) {
7476                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
7477                 wpa_s->pending_pd_before_join = 0;
7478                 found = 1;
7479         }
7480
7481         wpas_p2p_stop_find(wpa_s);
7482
7483         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7484                 if (wpa_s == global->p2p_group_formation &&
7485                     (wpa_s->p2p_in_provisioning ||
7486                      wpa_s->parent->pending_interface_type ==
7487                      WPA_IF_P2P_CLIENT)) {
7488                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
7489                                    "formation found - cancelling",
7490                                    wpa_s->ifname);
7491                         found = 1;
7492                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7493                                              wpa_s->parent, NULL);
7494                         if (wpa_s->p2p_in_provisioning) {
7495                                 wpas_group_formation_completed(wpa_s, 0, 0);
7496                                 break;
7497                         }
7498                         wpas_p2p_group_delete(wpa_s,
7499                                               P2P_GROUP_REMOVAL_REQUESTED);
7500                         break;
7501                 } else if (wpa_s->p2p_in_invitation) {
7502                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
7503                                    wpa_s->ifname);
7504                         found = 1;
7505                         wpas_p2p_group_formation_failed(wpa_s, 0);
7506                 }
7507         }
7508
7509         if (!found) {
7510                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
7511                 return -1;
7512         }
7513
7514         return 0;
7515 }
7516
7517
7518 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
7519 {
7520         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7521                 return;
7522
7523         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
7524                    "being available anymore");
7525         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
7526 }
7527
7528
7529 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
7530                                    int freq_24, int freq_5, int freq_overall)
7531 {
7532         struct p2p_data *p2p = wpa_s->global->p2p;
7533         if (p2p == NULL)
7534                 return;
7535         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
7536 }
7537
7538
7539 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
7540 {
7541         u8 peer[ETH_ALEN];
7542         struct p2p_data *p2p = wpa_s->global->p2p;
7543
7544         if (p2p == NULL)
7545                 return -1;
7546
7547         if (hwaddr_aton(addr, peer))
7548                 return -1;
7549
7550         return p2p_unauthorize(p2p, peer);
7551 }
7552
7553
7554 /**
7555  * wpas_p2p_disconnect - Disconnect from a P2P Group
7556  * @wpa_s: Pointer to wpa_supplicant data
7557  * Returns: 0 on success, -1 on failure
7558  *
7559  * This can be used to disconnect from a group in which the local end is a P2P
7560  * Client or to end a P2P Group in case the local end is the Group Owner. If a
7561  * virtual network interface was created for this group, that interface will be
7562  * removed. Otherwise, only the configured P2P group network will be removed
7563  * from the interface.
7564  */
7565 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
7566 {
7567
7568         if (wpa_s == NULL)
7569                 return -1;
7570
7571         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
7572                 -1 : 0;
7573 }
7574
7575
7576 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
7577 {
7578         int ret;
7579
7580         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7581                 return 0;
7582
7583         ret = p2p_in_progress(wpa_s->global->p2p);
7584         if (ret == 0) {
7585                 /*
7586                  * Check whether there is an ongoing WPS provisioning step (or
7587                  * other parts of group formation) on another interface since
7588                  * p2p_in_progress() does not report this to avoid issues for
7589                  * scans during such provisioning step.
7590                  */
7591                 if (wpa_s->global->p2p_group_formation &&
7592                     wpa_s->global->p2p_group_formation != wpa_s) {
7593                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
7594                                 "in group formation",
7595                                 wpa_s->global->p2p_group_formation->ifname);
7596                         ret = 1;
7597                 }
7598         }
7599
7600         if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
7601                 struct os_reltime now;
7602                 os_get_reltime(&now);
7603                 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
7604                                        P2P_MAX_INITIAL_CONN_WAIT_GO)) {
7605                         /* Wait for the first client has expired */
7606                         wpa_s->global->p2p_go_wait_client.sec = 0;
7607                 } else {
7608                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
7609                         ret = 1;
7610                 }
7611         }
7612
7613         return ret;
7614 }
7615
7616
7617 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
7618                               struct wpa_ssid *ssid)
7619 {
7620         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
7621             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7622                                  wpa_s->parent, NULL) > 0) {
7623                 /**
7624                  * Remove the network by scheduling the group formation
7625                  * timeout to happen immediately. The teardown code
7626                  * needs to be scheduled to run asynch later so that we
7627                  * don't delete data from under ourselves unexpectedly.
7628                  * Calling wpas_p2p_group_formation_timeout directly
7629                  * causes a series of crashes in WPS failure scenarios.
7630                  */
7631                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
7632                            "P2P group network getting removed");
7633                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
7634                                        wpa_s->parent, NULL);
7635         }
7636 }
7637
7638
7639 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
7640                                           const u8 *addr, const u8 *ssid,
7641                                           size_t ssid_len)
7642 {
7643         struct wpa_ssid *s;
7644         size_t i;
7645
7646         for (s = wpa_s->conf->ssid; s; s = s->next) {
7647                 if (s->disabled != 2)
7648                         continue;
7649                 if (ssid &&
7650                     (ssid_len != s->ssid_len ||
7651                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
7652                         continue;
7653                 if (addr == NULL) {
7654                         if (s->mode == WPAS_MODE_P2P_GO)
7655                                 return s;
7656                         continue;
7657                 }
7658                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
7659                         return s; /* peer is GO in the persistent group */
7660                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
7661                         continue;
7662                 for (i = 0; i < s->num_p2p_clients; i++) {
7663                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
7664                                       addr, ETH_ALEN) == 0)
7665                                 return s; /* peer is P2P client in persistent
7666                                            * group */
7667                 }
7668         }
7669
7670         return NULL;
7671 }
7672
7673
7674 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
7675                                        const u8 *addr)
7676 {
7677         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7678                                  wpa_s->parent, NULL) > 0) {
7679                 /*
7680                  * This can happen if WPS provisioning step is not terminated
7681                  * cleanly (e.g., P2P Client does not send WSC_Done). Since the
7682                  * peer was able to connect, there is no need to time out group
7683                  * formation after this, though. In addition, this is used with
7684                  * the initial connection wait on the GO as a separate formation
7685                  * timeout and as such, expected to be hit after the initial WPS
7686                  * provisioning step.
7687                  */
7688                 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
7689
7690                 if (!wpa_s->p2p_go_group_formation_completed &&
7691                     !wpa_s->group_formation_reported) {
7692                         /*
7693                          * GO has not yet notified group formation success since
7694                          * the WPS step was not completed cleanly. Do that
7695                          * notification now since the P2P Client was able to
7696                          * connect and as such, must have received the
7697                          * credential from the WPS step.
7698                          */
7699                         if (wpa_s->global->p2p)
7700                                 p2p_wps_success_cb(wpa_s->global->p2p, addr);
7701                         wpas_group_formation_completed(wpa_s, 1, 0);
7702                 }
7703         }
7704         if (!wpa_s->p2p_go_group_formation_completed) {
7705                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
7706                 wpa_s->p2p_go_group_formation_completed = 1;
7707                 wpa_s->global->p2p_group_formation = NULL;
7708                 wpa_s->p2p_in_provisioning = 0;
7709                 wpa_s->p2p_in_invitation = 0;
7710         }
7711         wpa_s->global->p2p_go_wait_client.sec = 0;
7712         if (addr == NULL)
7713                 return;
7714         wpas_p2p_add_persistent_group_client(wpa_s, addr);
7715 }
7716
7717
7718 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
7719                                        int group_added)
7720 {
7721         struct wpa_supplicant *group = wpa_s;
7722         int ret = 0;
7723
7724         if (wpa_s->global->p2p_group_formation)
7725                 group = wpa_s->global->p2p_group_formation;
7726         wpa_s = wpa_s->global->p2p_init_wpa_s;
7727         offchannel_send_action_done(wpa_s);
7728         if (group_added)
7729                 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
7730         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
7731         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
7732                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
7733                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
7734                          wpa_s->p2p_go_vht_center_freq2,
7735                          wpa_s->p2p_persistent_id,
7736                          wpa_s->p2p_pd_before_go_neg,
7737                          wpa_s->p2p_go_ht40,
7738                          wpa_s->p2p_go_vht,
7739                          wpa_s->p2p_go_max_oper_chwidth);
7740         return ret;
7741 }
7742
7743
7744 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
7745 {
7746         int res;
7747
7748         if (!wpa_s->p2p_fallback_to_go_neg ||
7749             wpa_s->p2p_in_provisioning <= 5)
7750                 return 0;
7751
7752         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
7753                 return 0; /* peer operating as a GO */
7754
7755         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
7756                 "fallback to GO Negotiation");
7757         wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG
7758                        "reason=GO-not-found");
7759         res = wpas_p2p_fallback_to_go_neg(wpa_s, 1);
7760
7761         return res == 1 ? 2 : 1;
7762 }
7763
7764
7765 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
7766 {
7767         struct wpa_supplicant *ifs;
7768
7769         if (wpa_s->wpa_state > WPA_SCANNING) {
7770                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
7771                         "concurrent operation",
7772                         wpa_s->conf->p2p_search_delay);
7773                 return wpa_s->conf->p2p_search_delay;
7774         }
7775
7776         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
7777                          radio_list) {
7778                 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
7779                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
7780                                 "delay due to concurrent operation on "
7781                                 "interface %s",
7782                                 wpa_s->conf->p2p_search_delay,
7783                                 ifs->ifname);
7784                         return wpa_s->conf->p2p_search_delay;
7785                 }
7786         }
7787
7788         return 0;
7789 }
7790
7791
7792 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
7793                                      struct wpa_ssid *s, const u8 *addr,
7794                                      int iface_addr)
7795 {
7796         struct psk_list_entry *psk, *tmp;
7797         int changed = 0;
7798
7799         dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
7800                               list) {
7801                 if ((iface_addr && !psk->p2p &&
7802                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
7803                     (!iface_addr && psk->p2p &&
7804                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
7805                         wpa_dbg(wpa_s, MSG_DEBUG,
7806                                 "P2P: Remove persistent group PSK list entry for "
7807                                 MACSTR " p2p=%u",
7808                                 MAC2STR(psk->addr), psk->p2p);
7809                         dl_list_del(&psk->list);
7810                         os_free(psk);
7811                         changed++;
7812                 }
7813         }
7814
7815         return changed;
7816 }
7817
7818
7819 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
7820                          const u8 *p2p_dev_addr,
7821                          const u8 *psk, size_t psk_len)
7822 {
7823         struct wpa_ssid *ssid = wpa_s->current_ssid;
7824         struct wpa_ssid *persistent;
7825         struct psk_list_entry *p, *last;
7826
7827         if (psk_len != sizeof(p->psk))
7828                 return;
7829
7830         if (p2p_dev_addr) {
7831                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
7832                         " p2p_dev_addr=" MACSTR,
7833                         MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
7834                 if (is_zero_ether_addr(p2p_dev_addr))
7835                         p2p_dev_addr = NULL;
7836         } else {
7837                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
7838                         MAC2STR(mac_addr));
7839         }
7840
7841         if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
7842                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
7843                 /* To be added to persistent group once created */
7844                 if (wpa_s->global->add_psk == NULL) {
7845                         wpa_s->global->add_psk = os_zalloc(sizeof(*p));
7846                         if (wpa_s->global->add_psk == NULL)
7847                                 return;
7848                 }
7849                 p = wpa_s->global->add_psk;
7850                 if (p2p_dev_addr) {
7851                         p->p2p = 1;
7852                         os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7853                 } else {
7854                         p->p2p = 0;
7855                         os_memcpy(p->addr, mac_addr, ETH_ALEN);
7856                 }
7857                 os_memcpy(p->psk, psk, psk_len);
7858                 return;
7859         }
7860
7861         if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
7862                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
7863                 return;
7864         }
7865
7866         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
7867                                              ssid->ssid_len);
7868         if (!persistent) {
7869                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
7870                 return;
7871         }
7872
7873         p = os_zalloc(sizeof(*p));
7874         if (p == NULL)
7875                 return;
7876         if (p2p_dev_addr) {
7877                 p->p2p = 1;
7878                 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7879         } else {
7880                 p->p2p = 0;
7881                 os_memcpy(p->addr, mac_addr, ETH_ALEN);
7882         }
7883         os_memcpy(p->psk, psk, psk_len);
7884
7885         if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
7886             (last = dl_list_last(&persistent->psk_list,
7887                                  struct psk_list_entry, list))) {
7888                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
7889                         MACSTR " (p2p=%u) to make room for a new one",
7890                         MAC2STR(last->addr), last->p2p);
7891                 dl_list_del(&last->list);
7892                 os_free(last);
7893         }
7894
7895         wpas_p2p_remove_psk_entry(wpa_s->parent, persistent,
7896                                   p2p_dev_addr ? p2p_dev_addr : mac_addr,
7897                                   p2p_dev_addr == NULL);
7898         if (p2p_dev_addr) {
7899                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
7900                         MACSTR, MAC2STR(p2p_dev_addr));
7901         } else {
7902                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
7903                         MAC2STR(mac_addr));
7904         }
7905         dl_list_add(&persistent->psk_list, &p->list);
7906
7907         if (wpa_s->parent->conf->update_config &&
7908             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
7909                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
7910 }
7911
7912
7913 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
7914                                 struct wpa_ssid *s, const u8 *addr,
7915                                 int iface_addr)
7916 {
7917         int res;
7918
7919         res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
7920         if (res > 0 && wpa_s->conf->update_config &&
7921             wpa_config_write(wpa_s->confname, wpa_s->conf))
7922                 wpa_dbg(wpa_s, MSG_DEBUG,
7923                         "P2P: Failed to update configuration");
7924 }
7925
7926
7927 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
7928                                       const u8 *peer, int iface_addr)
7929 {
7930         struct hostapd_data *hapd;
7931         struct hostapd_wpa_psk *psk, *prev, *rem;
7932         struct sta_info *sta;
7933
7934         if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
7935             wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
7936                 return;
7937
7938         /* Remove per-station PSK entry */
7939         hapd = wpa_s->ap_iface->bss[0];
7940         prev = NULL;
7941         psk = hapd->conf->ssid.wpa_psk;
7942         while (psk) {
7943                 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
7944                     (!iface_addr &&
7945                      os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
7946                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
7947                                 MACSTR " iface_addr=%d",
7948                                 MAC2STR(peer), iface_addr);
7949                         if (prev)
7950                                 prev->next = psk->next;
7951                         else
7952                                 hapd->conf->ssid.wpa_psk = psk->next;
7953                         rem = psk;
7954                         psk = psk->next;
7955                         os_free(rem);
7956                 } else {
7957                         prev = psk;
7958                         psk = psk->next;
7959                 }
7960         }
7961
7962         /* Disconnect from group */
7963         if (iface_addr)
7964                 sta = ap_get_sta(hapd, peer);
7965         else
7966                 sta = ap_get_sta_p2p(hapd, peer);
7967         if (sta) {
7968                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
7969                         " (iface_addr=%d) from group",
7970                         MAC2STR(peer), iface_addr);
7971                 hostapd_drv_sta_deauth(hapd, sta->addr,
7972                                        WLAN_REASON_DEAUTH_LEAVING);
7973                 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
7974         }
7975 }
7976
7977
7978 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
7979                             int iface_addr)
7980 {
7981         struct wpa_ssid *s;
7982         struct wpa_supplicant *w;
7983         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
7984
7985         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
7986
7987         /* Remove from any persistent group */
7988         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
7989                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
7990                         continue;
7991                 if (!iface_addr)
7992                         wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0);
7993                 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr);
7994         }
7995
7996         /* Remove from any operating group */
7997         for (w = wpa_s->global->ifaces; w; w = w->next)
7998                 wpas_p2p_remove_client_go(w, peer, iface_addr);
7999 }
8000
8001
8002 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
8003 {
8004         struct wpa_supplicant *wpa_s = eloop_ctx;
8005         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
8006 }
8007
8008
8009 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
8010 {
8011         struct wpa_supplicant *wpa_s = eloop_ctx;
8012
8013         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
8014         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
8015 }
8016
8017
8018 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
8019                                         struct wpa_ssid *ssid)
8020 {
8021         struct wpa_supplicant *iface;
8022
8023         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8024                 if (!iface->current_ssid ||
8025                     iface->current_ssid->frequency == freq ||
8026                     (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
8027                      !iface->current_ssid->p2p_group))
8028                         continue;
8029
8030                 /* Remove the connection with least priority */
8031                 if (!wpas_is_p2p_prioritized(iface)) {
8032                         /* STA connection has priority over existing
8033                          * P2P connection, so remove the interface. */
8034                         wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
8035                         eloop_register_timeout(0, 0,
8036                                                wpas_p2p_group_freq_conflict,
8037                                                iface, NULL);
8038                         /* If connection in progress is P2P connection, do not
8039                          * proceed for the connection. */
8040                         if (wpa_s == iface)
8041                                 return -1;
8042                         else
8043                                 return 0;
8044                 } else {
8045                         /* P2P connection has priority, disable the STA network
8046                          */
8047                         wpa_supplicant_disable_network(wpa_s->global->ifaces,
8048                                                        ssid);
8049                         wpa_msg(wpa_s->global->ifaces, MSG_INFO,
8050                                 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
8051                         os_memset(wpa_s->global->ifaces->pending_bssid, 0,
8052                                   ETH_ALEN);
8053                         /* If P2P connection is in progress, continue
8054                          * connecting...*/
8055                         if (wpa_s == iface)
8056                                 return 0;
8057                         else
8058                                 return -1;
8059                 }
8060         }
8061
8062         return 0;
8063 }
8064
8065
8066 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
8067 {
8068         struct wpa_ssid *ssid = wpa_s->current_ssid;
8069
8070         if (ssid == NULL || !ssid->p2p_group)
8071                 return 0;
8072
8073         if (wpa_s->p2p_last_4way_hs_fail &&
8074             wpa_s->p2p_last_4way_hs_fail == ssid) {
8075                 u8 go_dev_addr[ETH_ALEN];
8076                 struct wpa_ssid *persistent;
8077
8078                 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
8079                                               ssid->ssid,
8080                                               ssid->ssid_len) <= 0) {
8081                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
8082                         goto disconnect;
8083                 }
8084
8085                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
8086                         MACSTR, MAC2STR(go_dev_addr));
8087                 persistent = wpas_p2p_get_persistent(wpa_s->parent, go_dev_addr,
8088                                                      ssid->ssid,
8089                                                      ssid->ssid_len);
8090                 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
8091                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
8092                         goto disconnect;
8093                 }
8094                 wpa_msg_global(wpa_s->parent, MSG_INFO,
8095                                P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
8096                                persistent->id);
8097         disconnect:
8098                 wpa_s->p2p_last_4way_hs_fail = NULL;
8099                 /*
8100                  * Remove the group from a timeout to avoid issues with caller
8101                  * continuing to use the interface if this is on a P2P group
8102                  * interface.
8103                  */
8104                 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
8105                                        wpa_s, NULL);
8106                 return 1;
8107         }
8108
8109         wpa_s->p2p_last_4way_hs_fail = ssid;
8110         return 0;
8111 }
8112
8113
8114 #ifdef CONFIG_WPS_NFC
8115
8116 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
8117                                              struct wpabuf *p2p)
8118 {
8119         struct wpabuf *ret;
8120         size_t wsc_len;
8121
8122         if (p2p == NULL) {
8123                 wpabuf_free(wsc);
8124                 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
8125                 return NULL;
8126         }
8127
8128         wsc_len = wsc ? wpabuf_len(wsc) : 0;
8129         ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
8130         if (ret == NULL) {
8131                 wpabuf_free(wsc);
8132                 wpabuf_free(p2p);
8133                 return NULL;
8134         }
8135
8136         wpabuf_put_be16(ret, wsc_len);
8137         if (wsc)
8138                 wpabuf_put_buf(ret, wsc);
8139         wpabuf_put_be16(ret, wpabuf_len(p2p));
8140         wpabuf_put_buf(ret, p2p);
8141
8142         wpabuf_free(wsc);
8143         wpabuf_free(p2p);
8144         wpa_hexdump_buf(MSG_DEBUG,
8145                         "P2P: Generated NFC connection handover message", ret);
8146
8147         if (ndef && ret) {
8148                 struct wpabuf *tmp;
8149                 tmp = ndef_build_p2p(ret);
8150                 wpabuf_free(ret);
8151                 if (tmp == NULL) {
8152                         wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
8153                         return NULL;
8154                 }
8155                 ret = tmp;
8156         }
8157
8158         return ret;
8159 }
8160
8161
8162 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
8163                              struct wpa_ssid **ssid, u8 *go_dev_addr)
8164 {
8165         struct wpa_supplicant *iface;
8166
8167         if (go_dev_addr)
8168                 os_memset(go_dev_addr, 0, ETH_ALEN);
8169         if (ssid)
8170                 *ssid = NULL;
8171         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8172                 if (iface->wpa_state < WPA_ASSOCIATING ||
8173                     iface->current_ssid == NULL || iface->assoc_freq == 0 ||
8174                     !iface->current_ssid->p2p_group ||
8175                     iface->current_ssid->mode != WPAS_MODE_INFRA)
8176                         continue;
8177                 if (ssid)
8178                         *ssid = iface->current_ssid;
8179                 if (go_dev_addr)
8180                         os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
8181                 return iface->assoc_freq;
8182         }
8183         return 0;
8184 }
8185
8186
8187 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
8188                                           int ndef)
8189 {
8190         struct wpabuf *wsc, *p2p;
8191         struct wpa_ssid *ssid;
8192         u8 go_dev_addr[ETH_ALEN];
8193         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8194
8195         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
8196                 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
8197                 return NULL;
8198         }
8199
8200         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8201             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8202                            &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
8203                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
8204                 return NULL;
8205         }
8206
8207         if (cli_freq == 0) {
8208                 wsc = wps_build_nfc_handover_req_p2p(
8209                         wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
8210         } else
8211                 wsc = NULL;
8212         p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
8213                                          go_dev_addr, ssid ? ssid->ssid : NULL,
8214                                          ssid ? ssid->ssid_len : 0);
8215
8216         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8217 }
8218
8219
8220 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
8221                                           int ndef, int tag)
8222 {
8223         struct wpabuf *wsc, *p2p;
8224         struct wpa_ssid *ssid;
8225         u8 go_dev_addr[ETH_ALEN];
8226         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8227
8228         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8229                 return NULL;
8230
8231         if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8232             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8233                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8234                 return NULL;
8235
8236         if (cli_freq == 0) {
8237                 wsc = wps_build_nfc_handover_sel_p2p(
8238                         wpa_s->parent->wps,
8239                         tag ? wpa_s->conf->wps_nfc_dev_pw_id :
8240                         DEV_PW_NFC_CONNECTION_HANDOVER,
8241                         wpa_s->conf->wps_nfc_dh_pubkey,
8242                         tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
8243         } else
8244                 wsc = NULL;
8245         p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
8246                                          go_dev_addr, ssid ? ssid->ssid : NULL,
8247                                          ssid ? ssid->ssid_len : 0);
8248
8249         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8250 }
8251
8252
8253 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
8254                                    struct p2p_nfc_params *params)
8255 {
8256         wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
8257                    "connection handover (freq=%d)",
8258                    params->go_freq);
8259
8260         if (params->go_freq && params->go_ssid_len) {
8261                 wpa_s->p2p_wps_method = WPS_NFC;
8262                 wpa_s->pending_join_wps_method = WPS_NFC;
8263                 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
8264                 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
8265                           ETH_ALEN);
8266                 return wpas_p2p_join_start(wpa_s, params->go_freq,
8267                                            params->go_ssid,
8268                                            params->go_ssid_len);
8269         }
8270
8271         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8272                                 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
8273                                 params->go_freq, wpa_s->p2p_go_vht_center_freq2,
8274                                 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth);
8275 }
8276
8277
8278 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
8279                                   struct p2p_nfc_params *params, int tag)
8280 {
8281         int res, persistent;
8282         struct wpa_ssid *ssid;
8283
8284         wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
8285                    "connection handover");
8286         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
8287                 ssid = wpa_s->current_ssid;
8288                 if (ssid == NULL)
8289                         continue;
8290                 if (ssid->mode != WPAS_MODE_P2P_GO)
8291                         continue;
8292                 if (wpa_s->ap_iface == NULL)
8293                         continue;
8294                 break;
8295         }
8296         if (wpa_s == NULL) {
8297                 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
8298                 return -1;
8299         }
8300
8301         if (wpa_s->parent->p2p_oob_dev_pw_id !=
8302             DEV_PW_NFC_CONNECTION_HANDOVER &&
8303             !wpa_s->parent->p2p_oob_dev_pw) {
8304                 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
8305                 return -1;
8306         }
8307         res = wpas_ap_wps_add_nfc_pw(
8308                 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
8309                 wpa_s->parent->p2p_oob_dev_pw,
8310                 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
8311                 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
8312         if (res)
8313                 return res;
8314
8315         if (!tag) {
8316                 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
8317                 return 0;
8318         }
8319
8320         if (!params->peer ||
8321             !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
8322                 return 0;
8323
8324         wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
8325                    " to join", MAC2STR(params->peer->p2p_device_addr));
8326
8327         wpa_s->global->p2p_invite_group = wpa_s;
8328         persistent = ssid->p2p_persistent_group &&
8329                 wpas_p2p_get_persistent(wpa_s->parent,
8330                                         params->peer->p2p_device_addr,
8331                                         ssid->ssid, ssid->ssid_len);
8332         wpa_s->parent->pending_invite_ssid_id = -1;
8333
8334         return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
8335                           P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
8336                           ssid->ssid, ssid->ssid_len, ssid->frequency,
8337                           wpa_s->global->p2p_dev_addr, persistent, 0,
8338                           wpa_s->parent->p2p_oob_dev_pw_id);
8339 }
8340
8341
8342 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
8343                                     struct p2p_nfc_params *params,
8344                                     int forced_freq)
8345 {
8346         wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
8347                    "connection handover");
8348         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8349                                 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
8350                                 forced_freq, wpa_s->p2p_go_vht_center_freq2,
8351                                 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth);
8352 }
8353
8354
8355 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
8356                                     struct p2p_nfc_params *params,
8357                                     int forced_freq)
8358 {
8359         int res;
8360
8361         wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
8362                    "connection handover");
8363         res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8364                                WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
8365                                forced_freq, wpa_s->p2p_go_vht_center_freq2,
8366                                -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth);
8367         if (res)
8368                 return res;
8369
8370         res = wpas_p2p_listen(wpa_s, 60);
8371         if (res) {
8372                 p2p_unauthorize(wpa_s->global->p2p,
8373                                 params->peer->p2p_device_addr);
8374         }
8375
8376         return res;
8377 }
8378
8379
8380 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
8381                                             const struct wpabuf *data,
8382                                             int sel, int tag, int forced_freq)
8383 {
8384         const u8 *pos, *end;
8385         u16 len, id;
8386         struct p2p_nfc_params params;
8387         int res;
8388
8389         os_memset(&params, 0, sizeof(params));
8390         params.sel = sel;
8391
8392         wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
8393
8394         pos = wpabuf_head(data);
8395         end = pos + wpabuf_len(data);
8396
8397         if (end - pos < 2) {
8398                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
8399                            "attributes");
8400                 return -1;
8401         }
8402         len = WPA_GET_BE16(pos);
8403         pos += 2;
8404         if (len > end - pos) {
8405                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
8406                            "attributes");
8407                 return -1;
8408         }
8409         params.wsc_attr = pos;
8410         params.wsc_len = len;
8411         pos += len;
8412
8413         if (end - pos < 2) {
8414                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
8415                            "attributes");
8416                 return -1;
8417         }
8418         len = WPA_GET_BE16(pos);
8419         pos += 2;
8420         if (len > end - pos) {
8421                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
8422                            "attributes");
8423                 return -1;
8424         }
8425         params.p2p_attr = pos;
8426         params.p2p_len = len;
8427         pos += len;
8428
8429         wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
8430                     params.wsc_attr, params.wsc_len);
8431         wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
8432                     params.p2p_attr, params.p2p_len);
8433         if (pos < end) {
8434                 wpa_hexdump(MSG_DEBUG,
8435                             "P2P: Ignored extra data after P2P attributes",
8436                             pos, end - pos);
8437         }
8438
8439         res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
8440         if (res)
8441                 return res;
8442
8443         if (params.next_step == NO_ACTION)
8444                 return 0;
8445
8446         if (params.next_step == BOTH_GO) {
8447                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
8448                         MAC2STR(params.peer->p2p_device_addr));
8449                 return 0;
8450         }
8451
8452         if (params.next_step == PEER_CLIENT) {
8453                 if (!is_zero_ether_addr(params.go_dev_addr)) {
8454                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8455                                 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
8456                                 " ssid=\"%s\"",
8457                                 MAC2STR(params.peer->p2p_device_addr),
8458                                 params.go_freq,
8459                                 MAC2STR(params.go_dev_addr),
8460                                 wpa_ssid_txt(params.go_ssid,
8461                                              params.go_ssid_len));
8462                 } else {
8463                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8464                                 "peer=" MACSTR " freq=%d",
8465                                 MAC2STR(params.peer->p2p_device_addr),
8466                                 params.go_freq);
8467                 }
8468                 return 0;
8469         }
8470
8471         if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
8472                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
8473                         MACSTR, MAC2STR(params.peer->p2p_device_addr));
8474                 return 0;
8475         }
8476
8477         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8478         wpa_s->p2p_oob_dev_pw = NULL;
8479
8480         if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
8481                 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
8482                            "received");
8483                 return -1;
8484         }
8485
8486         id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
8487         wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
8488         wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
8489                     params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8490         os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
8491                   params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8492         wpa_s->p2p_peer_oob_pk_hash_known = 1;
8493
8494         if (tag) {
8495                 if (id < 0x10) {
8496                         wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
8497                                    "peer OOB Device Password Id %u", id);
8498                         return -1;
8499                 }
8500                 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
8501                            "Device Password Id %u", id);
8502                 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
8503                                 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8504                                 params.oob_dev_pw_len -
8505                                 WPS_OOB_PUBKEY_HASH_LEN - 2);
8506                 wpa_s->p2p_oob_dev_pw_id = id;
8507                 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
8508                         params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8509                         params.oob_dev_pw_len -
8510                         WPS_OOB_PUBKEY_HASH_LEN - 2);
8511                 if (wpa_s->p2p_oob_dev_pw == NULL)
8512                         return -1;
8513
8514                 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8515                     wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8516                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8517                         return -1;
8518         } else {
8519                 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
8520                            "without Device Password");
8521                 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
8522         }
8523
8524         switch (params.next_step) {
8525         case NO_ACTION:
8526         case BOTH_GO:
8527         case PEER_CLIENT:
8528                 /* already covered above */
8529                 return 0;
8530         case JOIN_GROUP:
8531                 return wpas_p2p_nfc_join_group(wpa_s, &params);
8532         case AUTH_JOIN:
8533                 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
8534         case INIT_GO_NEG:
8535                 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
8536         case RESP_GO_NEG:
8537                 /* TODO: use own OOB Dev Pw */
8538                 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
8539         }
8540
8541         return -1;
8542 }
8543
8544
8545 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
8546                              const struct wpabuf *data, int forced_freq)
8547 {
8548         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8549                 return -1;
8550
8551         return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
8552 }
8553
8554
8555 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
8556                                  const struct wpabuf *req,
8557                                  const struct wpabuf *sel, int forced_freq)
8558 {
8559         struct wpabuf *tmp;
8560         int ret;
8561
8562         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8563                 return -1;
8564
8565         wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
8566
8567         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
8568                           wpabuf_head(req), wpabuf_len(req));
8569         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
8570                           wpabuf_head(sel), wpabuf_len(sel));
8571         if (forced_freq)
8572                 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
8573         tmp = ndef_parse_p2p(init ? sel : req);
8574         if (tmp == NULL) {
8575                 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
8576                 return -1;
8577         }
8578
8579         ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
8580                                                forced_freq);
8581         wpabuf_free(tmp);
8582
8583         return ret;
8584 }
8585
8586
8587 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
8588 {
8589         const u8 *if_addr;
8590         int go_intent = wpa_s->conf->p2p_go_intent;
8591         struct wpa_supplicant *iface;
8592
8593         if (wpa_s->global->p2p == NULL)
8594                 return -1;
8595
8596         if (!enabled) {
8597                 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
8598                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
8599                 {
8600                         if (!iface->ap_iface)
8601                                 continue;
8602                         hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
8603                 }
8604                 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
8605                                                  0, NULL);
8606                 if (wpa_s->p2p_nfc_tag_enabled)
8607                         wpas_p2p_remove_pending_group_interface(wpa_s);
8608                 wpa_s->p2p_nfc_tag_enabled = 0;
8609                 return 0;
8610         }
8611
8612         if (wpa_s->global->p2p_disabled)
8613                 return -1;
8614
8615         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
8616             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
8617             wpa_s->conf->wps_nfc_dev_pw == NULL ||
8618             wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
8619                 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
8620                            "to allow static handover cases");
8621                 return -1;
8622         }
8623
8624         wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
8625
8626         wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8627         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8628         wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8629         if (wpa_s->p2p_oob_dev_pw == NULL)
8630                 return -1;
8631         wpa_s->p2p_peer_oob_pk_hash_known = 0;
8632
8633         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
8634             wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
8635                 /*
8636                  * P2P Group Interface present and the command came on group
8637                  * interface, so enable the token for the current interface.
8638                  */
8639                 wpa_s->create_p2p_iface = 0;
8640         } else {
8641                 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
8642         }
8643
8644         if (wpa_s->create_p2p_iface) {
8645                 enum wpa_driver_if_type iftype;
8646                 /* Prepare to add a new interface for the group */
8647                 iftype = WPA_IF_P2P_GROUP;
8648                 if (go_intent == 15)
8649                         iftype = WPA_IF_P2P_GO;
8650                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
8651                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
8652                                    "interface for the group");
8653                         return -1;
8654                 }
8655
8656                 if_addr = wpa_s->pending_interface_addr;
8657         } else
8658                 if_addr = wpa_s->own_addr;
8659
8660         wpa_s->p2p_nfc_tag_enabled = enabled;
8661
8662         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8663                 struct hostapd_data *hapd;
8664                 if (iface->ap_iface == NULL)
8665                         continue;
8666                 hapd = iface->ap_iface->bss[0];
8667                 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
8668                 hapd->conf->wps_nfc_dh_pubkey =
8669                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
8670                 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
8671                 hapd->conf->wps_nfc_dh_privkey =
8672                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
8673                 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
8674                 hapd->conf->wps_nfc_dev_pw =
8675                         wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8676                 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8677
8678                 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
8679                         wpa_dbg(iface, MSG_DEBUG,
8680                                 "P2P: Failed to enable NFC Tag for GO");
8681                 }
8682         }
8683         p2p_set_authorized_oob_dev_pw_id(
8684                 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
8685                 if_addr);
8686
8687         return 0;
8688 }
8689
8690 #endif /* CONFIG_WPS_NFC */
8691
8692
8693 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
8694                                              struct wpa_used_freq_data *freqs,
8695                                              unsigned int num)
8696 {
8697         u8 curr_chan, cand, chan;
8698         unsigned int i;
8699
8700         /*
8701          * If possible, optimize the Listen channel to be a channel that is
8702          * already used by one of the other interfaces.
8703          */
8704         if (!wpa_s->conf->p2p_optimize_listen_chan)
8705                 return;
8706
8707         if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
8708                 return;
8709
8710         curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
8711         for (i = 0, cand = 0; i < num; i++) {
8712                 ieee80211_freq_to_chan(freqs[i].freq, &chan);
8713                 if (curr_chan == chan) {
8714                         cand = 0;
8715                         break;
8716                 }
8717
8718                 if (chan == 1 || chan == 6 || chan == 11)
8719                         cand = chan;
8720         }
8721
8722         if (cand) {
8723                 wpa_dbg(wpa_s, MSG_DEBUG,
8724                         "P2P: Update Listen channel to %u based on operating channel",
8725                         cand);
8726                 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
8727         }
8728 }
8729
8730
8731 static int wpas_p2p_move_go_csa(struct wpa_supplicant *wpa_s)
8732 {
8733         struct hostapd_config *conf;
8734         struct p2p_go_neg_results params;
8735         struct csa_settings csa_settings;
8736         struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8737         int old_freq = current_ssid->frequency;
8738         int ret;
8739
8740         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) {
8741                 wpa_dbg(wpa_s, MSG_DEBUG, "CSA is not enabled");
8742                 return -1;
8743         }
8744
8745         /*
8746          * TODO: This function may not always work correctly. For example,
8747          * when we have a running GO and a BSS on a DFS channel.
8748          */
8749         if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, 0, 0, NULL)) {
8750                 wpa_dbg(wpa_s, MSG_DEBUG,
8751                         "P2P CSA: Failed to select new frequency for GO");
8752                 return -1;
8753         }
8754
8755         if (current_ssid->frequency == params.freq) {
8756                 wpa_dbg(wpa_s, MSG_DEBUG,
8757                         "P2P CSA: Selected same frequency - not moving GO");
8758                 return 0;
8759         }
8760
8761         conf = hostapd_config_defaults();
8762         if (!conf) {
8763                 wpa_dbg(wpa_s, MSG_DEBUG,
8764                         "P2P CSA: Failed to allocate default config");
8765                 return -1;
8766         }
8767
8768         current_ssid->frequency = params.freq;
8769         if (wpa_supplicant_conf_ap_ht(wpa_s, current_ssid, conf)) {
8770                 wpa_dbg(wpa_s, MSG_DEBUG,
8771                         "P2P CSA: Failed to create new GO config");
8772                 ret = -1;
8773                 goto out;
8774         }
8775
8776         if (conf->hw_mode != wpa_s->ap_iface->current_mode->mode) {
8777                 wpa_dbg(wpa_s, MSG_DEBUG,
8778                         "P2P CSA: CSA to a different band is not supported");
8779                 ret = -1;
8780                 goto out;
8781         }
8782
8783         os_memset(&csa_settings, 0, sizeof(csa_settings));
8784         csa_settings.cs_count = P2P_GO_CSA_COUNT;
8785         csa_settings.block_tx = P2P_GO_CSA_BLOCK_TX;
8786         csa_settings.freq_params.freq = params.freq;
8787         csa_settings.freq_params.sec_channel_offset = conf->secondary_channel;
8788         csa_settings.freq_params.ht_enabled = conf->ieee80211n;
8789         csa_settings.freq_params.bandwidth = conf->secondary_channel ? 40 : 20;
8790
8791         if (conf->ieee80211ac) {
8792                 int freq1 = 0, freq2 = 0;
8793                 u8 chan, opclass;
8794
8795                 if (ieee80211_freq_to_channel_ext(params.freq,
8796                                                   conf->secondary_channel,
8797                                                   conf->vht_oper_chwidth,
8798                                                   &opclass, &chan) ==
8799                     NUM_HOSTAPD_MODES) {
8800                         wpa_printf(MSG_ERROR, "P2P CSA: Bad freq");
8801                         ret = -1;
8802                         goto out;
8803                 }
8804
8805                 if (conf->vht_oper_centr_freq_seg0_idx)
8806                         freq1 = ieee80211_chan_to_freq(
8807                                 NULL, opclass,
8808                                 conf->vht_oper_centr_freq_seg0_idx);
8809
8810                 if (conf->vht_oper_centr_freq_seg1_idx)
8811                         freq2 = ieee80211_chan_to_freq(
8812                                 NULL, opclass,
8813                                 conf->vht_oper_centr_freq_seg1_idx);
8814
8815                 if (freq1 < 0 || freq2 < 0) {
8816                         wpa_dbg(wpa_s, MSG_DEBUG,
8817                                 "P2P CSA: Selected invalid VHT center freqs");
8818                         ret = -1;
8819                         goto out;
8820                 }
8821
8822                 csa_settings.freq_params.vht_enabled = conf->ieee80211ac;
8823                 csa_settings.freq_params.center_freq1 = freq1;
8824                 csa_settings.freq_params.center_freq2 = freq2;
8825
8826                 switch (conf->vht_oper_chwidth) {
8827                 case VHT_CHANWIDTH_80MHZ:
8828                 case VHT_CHANWIDTH_80P80MHZ:
8829                         csa_settings.freq_params.bandwidth = 80;
8830                         break;
8831                 case VHT_CHANWIDTH_160MHZ:
8832                         csa_settings.freq_params.bandwidth = 160;
8833                         break;
8834                 }
8835         }
8836
8837         ret = ap_switch_channel(wpa_s, &csa_settings);
8838 out:
8839         current_ssid->frequency = old_freq;
8840         hostapd_config_free(conf);
8841         return ret;
8842 }
8843
8844
8845 static void wpas_p2p_move_go_no_csa(struct wpa_supplicant *wpa_s)
8846 {
8847         struct p2p_go_neg_results params;
8848         struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8849
8850         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
8851
8852         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz",
8853                 current_ssid->frequency);
8854
8855         /* Stop the AP functionality */
8856         /* TODO: Should do this in a way that does not indicated to possible
8857          * P2P Clients in the group that the group is terminated. */
8858         wpa_supplicant_ap_deinit(wpa_s);
8859
8860         /* Reselect the GO frequency */
8861         if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, 0, 0, NULL)) {
8862                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Failed to reselect freq");
8863                 wpas_p2p_group_delete(wpa_s,
8864                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8865                 return;
8866         }
8867         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New freq selected for the GO (%u MHz)",
8868                 params.freq);
8869
8870         if (params.freq &&
8871             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
8872                 wpa_printf(MSG_DEBUG,
8873                            "P2P: Selected freq (%u MHz) is not valid for P2P",
8874                            params.freq);
8875                 wpas_p2p_group_delete(wpa_s,
8876                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8877                 return;
8878         }
8879
8880         /* Update the frequency */
8881         current_ssid->frequency = params.freq;
8882         wpa_s->connect_without_scan = current_ssid;
8883         wpa_s->reassociate = 1;
8884         wpa_s->disconnected = 0;
8885         wpa_supplicant_req_scan(wpa_s, 0, 0);
8886 }
8887
8888
8889 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx)
8890 {
8891         struct wpa_supplicant *wpa_s = eloop_ctx;
8892
8893         if (!wpa_s->ap_iface || !wpa_s->current_ssid)
8894                 return;
8895
8896         wpas_p2p_go_update_common_freqs(wpa_s);
8897
8898         /* Do not move GO in the middle of a CSA */
8899         if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
8900                 wpa_printf(MSG_DEBUG,
8901                            "P2P: CSA is in progress - not moving GO");
8902                 return;
8903         }
8904
8905         /*
8906          * First, try a channel switch flow. If it is not supported or fails,
8907          * take down the GO and bring it up again.
8908          */
8909         if (wpas_p2p_move_go_csa(wpa_s) < 0)
8910                 wpas_p2p_move_go_no_csa(wpa_s);
8911 }
8912
8913
8914 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx)
8915 {
8916         struct wpa_supplicant *wpa_s = eloop_ctx;
8917         struct wpa_used_freq_data *freqs = NULL;
8918         unsigned int num = wpa_s->num_multichan_concurrent;
8919
8920         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
8921         if (!freqs)
8922                 return;
8923
8924         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
8925
8926         /* Previous attempt to move a GO was not possible -- try again. */
8927         wpas_p2p_consider_moving_gos(wpa_s, freqs, num,
8928                                      WPAS_P2P_CHANNEL_UPDATE_ANY);
8929
8930         os_free(freqs);
8931 }
8932
8933
8934 /*
8935  * Consider moving a GO from its currently used frequency:
8936  * 1. It is possible that due to regulatory consideration the frequency
8937  *    can no longer be used and there is a need to evacuate the GO.
8938  * 2. It is possible that due to MCC considerations, it would be preferable
8939  *    to move the GO to a channel that is currently used by some other
8940  *    station interface.
8941  *
8942  * In case a frequency that became invalid is once again valid, cancel a
8943  * previously initiated GO frequency change.
8944  */
8945 static void wpas_p2p_consider_moving_one_go(struct wpa_supplicant *wpa_s,
8946                                             struct wpa_used_freq_data *freqs,
8947                                             unsigned int num)
8948 {
8949         unsigned int i, invalid_freq = 0, policy_move = 0, flags = 0;
8950         unsigned int timeout;
8951         int freq;
8952
8953         wpas_p2p_go_update_common_freqs(wpa_s);
8954
8955         freq = wpa_s->current_ssid->frequency;
8956         for (i = 0, invalid_freq = 0; i < num; i++) {
8957                 if (freqs[i].freq == freq) {
8958                         flags = freqs[i].flags;
8959
8960                         /* The channel is invalid, must change it */
8961                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
8962                                 wpa_dbg(wpa_s, MSG_DEBUG,
8963                                         "P2P: Freq=%d MHz no longer valid for GO",
8964                                         freq);
8965                                 invalid_freq = 1;
8966                         }
8967                 } else if (freqs[i].flags == 0) {
8968                         /* Freq is not used by any other station interface */
8969                         continue;
8970                 } else if (!p2p_supported_freq(wpa_s->global->p2p,
8971                                                freqs[i].freq)) {
8972                         /* Freq is not valid for P2P use cases */
8973                         continue;
8974                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
8975                            P2P_GO_FREQ_MOVE_SCM) {
8976                         policy_move = 1;
8977                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
8978                            P2P_GO_FREQ_MOVE_SCM_PEER_SUPPORTS &&
8979                            wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
8980                         policy_move = 1;
8981                 } else if ((wpa_s->conf->p2p_go_freq_change_policy ==
8982                             P2P_GO_FREQ_MOVE_SCM_ECSA) &&
8983                            wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
8984                         if (!p2p_get_group_num_members(wpa_s->p2p_group)) {
8985                                 policy_move = 1;
8986                         } else if ((wpa_s->drv_flags &
8987                                     WPA_DRIVER_FLAGS_AP_CSA) &&
8988                                    wpas_p2p_go_clients_support_ecsa(wpa_s)) {
8989                                 u8 chan;
8990
8991                                 /*
8992                                  * We do not support CSA between bands, so move
8993                                  * GO only within the same band.
8994                                  */
8995                                 if (wpa_s->ap_iface->current_mode->mode ==
8996                                     ieee80211_freq_to_chan(freqs[i].freq,
8997                                                            &chan))
8998                                         policy_move = 1;
8999                         }
9000                 }
9001         }
9002
9003         wpa_dbg(wpa_s, MSG_DEBUG,
9004                 "P2P: GO move: invalid_freq=%u, policy_move=%u, flags=0x%X",
9005                 invalid_freq, policy_move, flags);
9006
9007         /*
9008          * The channel is valid, or we are going to have a policy move, so
9009          * cancel timeout.
9010          */
9011         if (!invalid_freq || policy_move) {
9012                 wpa_dbg(wpa_s, MSG_DEBUG,
9013                         "P2P: Cancel a GO move from freq=%d MHz", freq);
9014                 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9015
9016                 if (wpas_p2p_in_progress(wpa_s)) {
9017                         wpa_dbg(wpa_s, MSG_DEBUG,
9018                                 "P2P: GO move: policy CS is not allowed - setting timeout to re-consider GO move");
9019                         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go,
9020                                              wpa_s, NULL);
9021                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9022                                                wpas_p2p_reconsider_moving_go,
9023                                                wpa_s, NULL);
9024                         return;
9025                 }
9026         }
9027
9028         if (!invalid_freq && (!policy_move || flags != 0)) {
9029                 wpa_dbg(wpa_s, MSG_DEBUG,
9030                         "P2P: Not initiating a GO frequency change");
9031                 return;
9032         }
9033
9034         /*
9035          * Do not consider moving GO if it is in the middle of a CSA. When the
9036          * CSA is finished this flow should be retriggered.
9037          */
9038         if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
9039                 wpa_dbg(wpa_s, MSG_DEBUG,
9040                         "P2P: Not initiating a GO frequency change - CSA is in progress");
9041                 return;
9042         }
9043
9044         if (invalid_freq && !wpas_p2p_disallowed_freq(wpa_s->global, freq))
9045                 timeout = P2P_GO_FREQ_CHANGE_TIME;
9046         else
9047                 timeout = 0;
9048
9049         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz in %d secs",
9050                 freq, timeout);
9051         eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9052         eloop_register_timeout(timeout, 0, wpas_p2p_move_go, wpa_s, NULL);
9053 }
9054
9055
9056 static void wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
9057                                          struct wpa_used_freq_data *freqs,
9058                                          unsigned int num,
9059                                          enum wpas_p2p_channel_update_trig trig)
9060 {
9061         struct wpa_supplicant *ifs;
9062
9063         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, ELOOP_ALL_CTX,
9064                              NULL);
9065
9066         /*
9067          * Travers all the radio interfaces, and for each GO interface, check
9068          * if there is a need to move the GO from the frequency it is using,
9069          * or in case the frequency is valid again, cancel the evacuation flow.
9070          */
9071         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
9072                          radio_list) {
9073                 if (ifs->current_ssid == NULL ||
9074                     ifs->current_ssid->mode != WPAS_MODE_P2P_GO)
9075                         continue;
9076
9077                 /*
9078                  * The GO was just started or completed channel switch, no need
9079                  * to move it.
9080                  */
9081                 if (wpa_s == ifs &&
9082                     (trig == WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE ||
9083                      trig == WPAS_P2P_CHANNEL_UPDATE_CS)) {
9084                         wpa_dbg(wpa_s, MSG_DEBUG,
9085                                 "P2P: GO move - schedule re-consideration");
9086                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9087                                                wpas_p2p_reconsider_moving_go,
9088                                                wpa_s, NULL);
9089                         continue;
9090                 }
9091
9092                 wpas_p2p_consider_moving_one_go(ifs, freqs, num);
9093         }
9094 }
9095
9096
9097 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
9098 {
9099         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
9100                 return;
9101
9102         wpas_p2p_update_channel_list(wpa_s,
9103                                      WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE);
9104 }
9105
9106
9107 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
9108 {
9109         if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
9110                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
9111                         "the management interface is being removed");
9112                 wpas_p2p_deinit_global(wpa_s->global);
9113         }
9114 }
9115
9116
9117 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
9118 {
9119         if (wpa_s->ap_iface->bss)
9120                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
9121         wpas_p2p_group_deinit(wpa_s);
9122 }