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  52  * it is currently using, but is no longer valid for P2P use cases.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  57  * Defines CSA parameters which are used when GO evacuates the no longer valid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                 if (cli_wpa_s)
 778                         conncap = P2PS_SETUP_GROUP_OWNER;
 779                 else {
 780                         u8 r;
 781
 782                         if (os_get_random(&r, sizeof(r)) < 0 ||
 783                             (r & 1))
 784                                 conncap = P2PS_SETUP_CLIENT;
 785                         else
 786                                 conncap = P2PS_SETUP_GROUP_OWNER;
 787                 }
 788                 break;
 789
 790         default:
 791                 return P2PS_SETUP_NONE;
 792         }
 793
 794 grp_owner:
 795         if ((conncap & P2PS_SETUP_GROUP_OWNER) ||
 796             (!incoming && (conncap & P2PS_SETUP_NEW))) {
 797                 if (go_wpa_s && p2p_client_limit_reached(go_wpa_s->p2p_group))
 798                         conncap &= ~P2PS_SETUP_GROUP_OWNER;
 799
 800                 s = wpas_p2p_get_persistent_go(wpa_s);
 801                 if (!s && !go_wpa_s && p2p_no_group_iface) {
 802                         p2p_set_intended_addr(wpa_s->global->p2p,
 803                                               wpa_s->own_addr);
 804                 } else if (!s && !go_wpa_s) {
 805                         if (wpas_p2p_add_group_interface(wpa_s,
 806                                                          WPA_IF_P2P_GO) < 0) {
 807                                 wpa_printf(MSG_ERROR,
 808                                            "P2P: Failed to allocate a new interface for the group");
 809                                 return P2PS_SETUP_NONE;
 810                         }
 811                         wpa_s->global->pending_group_iface_for_p2ps = 1;
 812                         p2p_set_intended_addr(wpa_s->global->p2p,
 813                                               wpa_s->pending_interface_addr);
 814                 }
 815         }
 816
 817         return conncap;
 818 }
 819
 820
 821 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 822                                  enum p2p_group_removal_reason removal_reason)
 823 {
 824         struct wpa_ssid *ssid;
 825         char *gtype;
 826         const char *reason;
 827
 828         ssid = wpa_s->current_ssid;
 829         if (ssid == NULL) {
 830                 /*
 831                  * The current SSID was not known, but there may still be a
 832                  * pending P2P group interface waiting for provisioning or a
 833                  * P2P group that is trying to reconnect.
 834                  */
 835                 ssid = wpa_s->conf->ssid;
 836                 while (ssid) {
 837                         if (ssid->p2p_group && ssid->disabled != 2)
 838                                 break;
 839                         ssid = ssid->next;
 840                 }
 841                 if (ssid == NULL &&
 842                         wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
 843                 {
 844                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 845                                    "not found");
 846                         return -1;
 847                 }
 848         }
 849         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 850                 gtype = "GO";
 851         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 852                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 853                 wpa_s->reassociate = 0;
 854                 wpa_s->disconnected = 1;
 855                 gtype = "client";
 856         } else
 857                 gtype = "GO";
 858
 859         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 860                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 861
 862         if (os_strcmp(gtype, "client") == 0) {
 863                 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 864                 if (eloop_is_timeout_registered(wpas_p2p_psk_failure_removal,
 865                                                 wpa_s, NULL)) {
 866                         wpa_printf(MSG_DEBUG,
 867                                    "P2P: PSK failure removal was scheduled, so use PSK failure as reason for group removal");
 868                         removal_reason = P2P_GROUP_REMOVAL_PSK_FAILURE;
 869                         eloop_cancel_timeout(wpas_p2p_psk_failure_removal,
 870                                              wpa_s, NULL);
 871                 }
 872         }
 873
 874         if (wpa_s->cross_connect_in_use) {
 875                 wpa_s->cross_connect_in_use = 0;
 876                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 877                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 878                                wpa_s->ifname, wpa_s->cross_connect_uplink);
 879         }
 880         switch (removal_reason) {
 881         case P2P_GROUP_REMOVAL_REQUESTED:
 882                 reason = " reason=REQUESTED";
 883                 break;
 884         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 885                 reason = " reason=FORMATION_FAILED";
 886                 break;
 887         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 888                 reason = " reason=IDLE";
 889                 break;
 890         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 891                 reason = " reason=UNAVAILABLE";
 892                 break;
 893         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 894                 reason = " reason=GO_ENDING_SESSION";
 895                 break;
 896         case P2P_GROUP_REMOVAL_PSK_FAILURE:
 897                 reason = " reason=PSK_FAILURE";
 898                 break;
 899         case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
 900                 reason = " reason=FREQ_CONFLICT";
 901                 break;
 902         default:
 903                 reason = "";
 904                 break;
 905         }
 906         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 907                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 908                                P2P_EVENT_GROUP_REMOVED "%s %s%s",
 909                                wpa_s->ifname, gtype, reason);
 910         }
 911
 912         if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0)
 913                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout");
 914         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 915                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 916         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
 917                                  wpa_s->parent, NULL) > 0) {
 918                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
 919                            "timeout");
 920                 wpa_s->p2p_in_provisioning = 0;
 921                 wpas_p2p_group_formation_failed(wpa_s, 1);
 922         }
 923
 924         wpa_s->p2p_in_invitation = 0;
 925         eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
 926         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, wpa_s, NULL);
 927
 928         /*
 929          * Make sure wait for the first client does not remain active after the
 930          * group has been removed.
 931          */
 932         wpa_s->global->p2p_go_wait_client.sec = 0;
 933
 934         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 935                 struct wpa_global *global;
 936                 char *ifname;
 937                 enum wpa_driver_if_type type;
 938                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 939                         wpa_s->ifname);
 940                 global = wpa_s->global;
 941                 ifname = os_strdup(wpa_s->ifname);
 942                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 943                 eloop_cancel_timeout(run_wpas_p2p_disconnect, wpa_s, NULL);
 944                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 945                 wpa_s = global->ifaces;
 946                 if (wpa_s && ifname)
 947                         wpa_drv_if_remove(wpa_s, type, ifname);
 948                 os_free(ifname);
 949                 return 1;
 950         }
 951
 952         if (!wpa_s->p2p_go_group_formation_completed) {
 953                 wpa_s->global->p2p_group_formation = NULL;
 954                 wpa_s->p2p_in_provisioning = 0;
 955         }
 956
 957         wpa_s->show_group_started = 0;
 958         os_free(wpa_s->go_params);
 959         wpa_s->go_params = NULL;
 960
 961         os_free(wpa_s->p2p_group_common_freqs);
 962         wpa_s->p2p_group_common_freqs = NULL;
 963         wpa_s->p2p_group_common_freqs_num = 0;
 964
 965         wpa_s->waiting_presence_resp = 0;
 966
 967         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 968         if (ssid && (ssid->p2p_group ||
 969                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 970                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 971                 int id = ssid->id;
 972                 if (ssid == wpa_s->current_ssid) {
 973                         wpa_sm_set_config(wpa_s->wpa, NULL);
 974                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 975                         wpa_s->current_ssid = NULL;
 976                 }
 977                 /*
 978                  * Networks objects created during any P2P activities are not
 979                  * exposed out as they might/will confuse certain non-P2P aware
 980                  * applications since these network objects won't behave like
 981                  * regular ones.
 982                  *
 983                  * Likewise, we don't send out network removed signals for such
 984                  * network objects.
 985                  */
 986                 wpa_config_remove_network(wpa_s->conf, id);
 987                 wpa_supplicant_clear_status(wpa_s);
 988                 wpa_supplicant_cancel_sched_scan(wpa_s);
 989         } else {
 990                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
 991                            "found");
 992         }
 993         if (wpa_s->ap_iface)
 994                 wpa_supplicant_ap_deinit(wpa_s);
 995         else
 996                 wpa_drv_deinit_p2p_cli(wpa_s);
 997
 998         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
 999
1000         return 0;
1001 }
1002
1003
1004 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
1005                                      u8 *go_dev_addr,
1006                                      const u8 *ssid, size_t ssid_len)
1007 {
1008         struct wpa_bss *bss;
1009         const u8 *bssid;
1010         struct wpabuf *p2p;
1011         u8 group_capab;
1012         const u8 *addr;
1013
1014         if (wpa_s->go_params)
1015                 bssid = wpa_s->go_params->peer_interface_addr;
1016         else
1017                 bssid = wpa_s->bssid;
1018
1019         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
1020         if (bss == NULL && wpa_s->go_params &&
1021             !is_zero_ether_addr(wpa_s->go_params->peer_device_addr))
1022                 bss = wpa_bss_get_p2p_dev_addr(
1023                         wpa_s, wpa_s->go_params->peer_device_addr);
1024         if (bss == NULL) {
1025                 u8 iface_addr[ETH_ALEN];
1026                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
1027                                            iface_addr) == 0)
1028                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
1029         }
1030         if (bss == NULL) {
1031                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1032                            "group is persistent - BSS " MACSTR " not found",
1033                            MAC2STR(bssid));
1034                 return 0;
1035         }
1036
1037         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
1038         if (p2p == NULL)
1039                 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss,
1040                                                          P2P_IE_VENDOR_TYPE);
1041         if (p2p == NULL) {
1042                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1043                            "group is persistent - BSS " MACSTR
1044                            " did not include P2P IE", MAC2STR(bssid));
1045                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
1046                             (u8 *) (bss + 1), bss->ie_len);
1047                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
1048                             ((u8 *) bss + 1) + bss->ie_len,
1049                             bss->beacon_ie_len);
1050                 return 0;
1051         }
1052
1053         group_capab = p2p_get_group_capab(p2p);
1054         addr = p2p_get_go_dev_addr(p2p);
1055         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
1056                    "group_capab=0x%x", group_capab);
1057         if (addr) {
1058                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
1059                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
1060                            MAC2STR(addr));
1061         } else
1062                 os_memset(go_dev_addr, 0, ETH_ALEN);
1063         wpabuf_free(p2p);
1064
1065         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
1066                    "go_dev_addr=" MACSTR,
1067                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
1068
1069         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
1070 }
1071
1072
1073 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
1074                                            struct wpa_ssid *ssid,
1075                                            const u8 *go_dev_addr)
1076 {
1077         struct wpa_ssid *s;
1078         int changed = 0;
1079
1080         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
1081                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
1082         for (s = wpa_s->conf->ssid; s; s = s->next) {
1083                 if (s->disabled == 2 &&
1084                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
1085                     s->ssid_len == ssid->ssid_len &&
1086                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
1087                         break;
1088         }
1089
1090         if (s) {
1091                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
1092                            "entry");
1093                 if (ssid->passphrase && !s->passphrase)
1094                         changed = 1;
1095                 else if (ssid->passphrase && s->passphrase &&
1096                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
1097                         changed = 1;
1098         } else {
1099                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
1100                            "entry");
1101                 changed = 1;
1102                 s = wpa_config_add_network(wpa_s->conf);
1103                 if (s == NULL)
1104                         return -1;
1105
1106                 /*
1107                  * Instead of network_added we emit persistent_group_added
1108                  * notification. Also to keep the defense checks in
1109                  * persistent_group obj registration method, we set the
1110                  * relevant flags in s to designate it as a persistent group.
1111                  */
1112                 s->p2p_group = 1;
1113                 s->p2p_persistent_group = 1;
1114                 wpas_notify_persistent_group_added(wpa_s, s);
1115                 wpa_config_set_network_defaults(s);
1116         }
1117
1118         s->p2p_group = 1;
1119         s->p2p_persistent_group = 1;
1120         s->disabled = 2;
1121         s->bssid_set = 1;
1122         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
1123         s->mode = ssid->mode;
1124         s->auth_alg = WPA_AUTH_ALG_OPEN;
1125         s->key_mgmt = WPA_KEY_MGMT_PSK;
1126         s->proto = WPA_PROTO_RSN;
1127         s->pairwise_cipher = WPA_CIPHER_CCMP;
1128         s->export_keys = 1;
1129         if (ssid->passphrase) {
1130                 os_free(s->passphrase);
1131                 s->passphrase = os_strdup(ssid->passphrase);
1132         }
1133         if (ssid->psk_set) {
1134                 s->psk_set = 1;
1135                 os_memcpy(s->psk, ssid->psk, 32);
1136         }
1137         if (s->passphrase && !s->psk_set)
1138                 wpa_config_update_psk(s);
1139         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
1140                 os_free(s->ssid);
1141                 s->ssid = os_malloc(ssid->ssid_len);
1142         }
1143         if (s->ssid) {
1144                 s->ssid_len = ssid->ssid_len;
1145                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
1146         }
1147         if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
1148                 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
1149                 wpa_s->global->add_psk = NULL;
1150                 changed = 1;
1151         }
1152
1153         if (changed && wpa_s->conf->update_config &&
1154             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
1155                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1156         }
1157
1158         return s->id;
1159 }
1160
1161
1162 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
1163                                                  const u8 *addr)
1164 {
1165         struct wpa_ssid *ssid, *s;
1166         u8 *n;
1167         size_t i;
1168         int found = 0;
1169         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
1170
1171         ssid = wpa_s->current_ssid;
1172         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
1173             !ssid->p2p_persistent_group)
1174                 return;
1175
1176         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
1177                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
1178                         continue;
1179
1180                 if (s->ssid_len == ssid->ssid_len &&
1181                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
1182                         break;
1183         }
1184
1185         if (s == NULL)
1186                 return;
1187
1188         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
1189                 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, addr,
1190                               ETH_ALEN) != 0)
1191                         continue;
1192
1193                 if (i == s->num_p2p_clients - 1)
1194                         return; /* already the most recent entry */
1195
1196                 /* move the entry to mark it most recent */
1197                 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
1198                            s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
1199                            (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
1200                 os_memcpy(s->p2p_client_list +
1201                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN, addr,
1202                           ETH_ALEN);
1203                 os_memset(s->p2p_client_list +
1204                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1205                           0xff, ETH_ALEN);
1206                 found = 1;
1207                 break;
1208         }
1209
1210         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
1211                 n = os_realloc_array(s->p2p_client_list,
1212                                      s->num_p2p_clients + 1, 2 * ETH_ALEN);
1213                 if (n == NULL)
1214                         return;
1215                 os_memcpy(n + s->num_p2p_clients * 2 * ETH_ALEN, addr,
1216                           ETH_ALEN);
1217                 os_memset(n + s->num_p2p_clients * 2 * ETH_ALEN + ETH_ALEN,
1218                           0xff, ETH_ALEN);
1219                 s->p2p_client_list = n;
1220                 s->num_p2p_clients++;
1221         } else if (!found && s->p2p_client_list) {
1222                 /* Not enough room for an additional entry - drop the oldest
1223                  * entry */
1224                 os_memmove(s->p2p_client_list,
1225                            s->p2p_client_list + 2 * ETH_ALEN,
1226                            (s->num_p2p_clients - 1) * 2 * ETH_ALEN);
1227                 os_memcpy(s->p2p_client_list +
1228                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN,
1229                           addr, ETH_ALEN);
1230                 os_memset(s->p2p_client_list +
1231                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1232                           0xff, ETH_ALEN);
1233         }
1234
1235         if (p2p_wpa_s->conf->update_config &&
1236             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
1237                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1238 }
1239
1240
1241 static void wpas_p2p_group_started(struct wpa_supplicant *wpa_s,
1242                                    int go, struct wpa_ssid *ssid, int freq,
1243                                    const u8 *psk, const char *passphrase,
1244                                    const u8 *go_dev_addr, int persistent,
1245                                    const char *extra)
1246 {
1247         const char *ssid_txt;
1248         char psk_txt[65];
1249
1250         if (psk)
1251                 wpa_snprintf_hex(psk_txt, sizeof(psk_txt), psk, 32);
1252         else
1253                 psk_txt[0] = '\0';
1254
1255         if (ssid)
1256                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
1257         else
1258                 ssid_txt = "";
1259
1260         if (passphrase && passphrase[0] == '\0')
1261                 passphrase = NULL;
1262
1263         /*
1264          * Include PSK/passphrase only in the control interface message and
1265          * leave it out from the debug log entry.
1266          */
1267         wpa_msg_global_ctrl(wpa_s->parent, MSG_INFO,
1268                             P2P_EVENT_GROUP_STARTED
1269                             "%s %s ssid=\"%s\" freq=%d%s%s%s%s%s go_dev_addr="
1270                             MACSTR "%s%s",
1271                             wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1272                             psk ? " psk=" : "", psk_txt,
1273                             passphrase ? " passphrase=\"" : "",
1274                             passphrase ? passphrase : "",
1275                             passphrase ? "\"" : "",
1276                             MAC2STR(go_dev_addr),
1277                             persistent ? " [PERSISTENT]" : "", extra);
1278         wpa_printf(MSG_INFO, P2P_EVENT_GROUP_STARTED
1279                    "%s %s ssid=\"%s\" freq=%d go_dev_addr=" MACSTR "%s%s",
1280                    wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1281                    MAC2STR(go_dev_addr), persistent ? " [PERSISTENT]" : "",
1282                    extra);
1283 }
1284
1285
1286 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
1287                                            int success, int already_deleted)
1288 {
1289         struct wpa_ssid *ssid;
1290         int client;
1291         int persistent;
1292         u8 go_dev_addr[ETH_ALEN];
1293         int network_id = -1;
1294
1295         /*
1296          * This callback is likely called for the main interface. Update wpa_s
1297          * to use the group interface if a new interface was created for the
1298          * group.
1299          */
1300         if (wpa_s->global->p2p_group_formation)
1301                 wpa_s = wpa_s->global->p2p_group_formation;
1302         if (wpa_s->p2p_go_group_formation_completed) {
1303                 wpa_s->global->p2p_group_formation = NULL;
1304                 wpa_s->p2p_in_provisioning = 0;
1305         }
1306         wpa_s->p2p_in_invitation = 0;
1307         wpa_s->group_formation_reported = 1;
1308
1309         if (!success) {
1310                 wpa_msg_global(wpa_s->parent, MSG_INFO,
1311                                P2P_EVENT_GROUP_FORMATION_FAILURE);
1312                 wpas_notify_p2p_group_formation_failure(wpa_s, "");
1313                 if (already_deleted)
1314                         return;
1315                 wpas_p2p_group_delete(wpa_s,
1316                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
1317                 return;
1318         }
1319
1320         wpa_msg_global(wpa_s->parent, MSG_INFO,
1321                        P2P_EVENT_GROUP_FORMATION_SUCCESS);
1322
1323         ssid = wpa_s->current_ssid;
1324         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
1325                 ssid->mode = WPAS_MODE_P2P_GO;
1326                 p2p_group_notif_formation_done(wpa_s->p2p_group);
1327                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
1328         }
1329
1330         persistent = 0;
1331         if (ssid) {
1332                 client = ssid->mode == WPAS_MODE_INFRA;
1333                 if (ssid->mode == WPAS_MODE_P2P_GO) {
1334                         persistent = ssid->p2p_persistent_group;
1335                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
1336                                   ETH_ALEN);
1337                 } else
1338                         persistent = wpas_p2p_persistent_group(wpa_s,
1339                                                                go_dev_addr,
1340                                                                ssid->ssid,
1341                                                                ssid->ssid_len);
1342         } else {
1343                 client = wpa_s->p2p_group_interface ==
1344                         P2P_GROUP_INTERFACE_CLIENT;
1345                 os_memset(go_dev_addr, 0, ETH_ALEN);
1346         }
1347
1348         wpa_s->show_group_started = 0;
1349         if (client) {
1350                 /*
1351                  * Indicate event only after successfully completed 4-way
1352                  * handshake, i.e., when the interface is ready for data
1353                  * packets.
1354                  */
1355                 wpa_s->show_group_started = 1;
1356         } else {
1357                 wpas_p2p_group_started(wpa_s, 1, ssid,
1358                                        ssid ? ssid->frequency : 0,
1359                                        ssid && ssid->passphrase == NULL &&
1360                                        ssid->psk_set ? ssid->psk : NULL,
1361                                        ssid ? ssid->passphrase : NULL,
1362                                        go_dev_addr, persistent, "");
1363                 wpas_p2p_cross_connect_setup(wpa_s);
1364                 wpas_p2p_set_group_idle_timeout(wpa_s);
1365         }
1366
1367         if (persistent)
1368                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
1369                                                              ssid, go_dev_addr);
1370         else {
1371                 os_free(wpa_s->global->add_psk);
1372                 wpa_s->global->add_psk = NULL;
1373         }
1374         if (network_id < 0 && ssid)
1375                 network_id = ssid->id;
1376         if (!client) {
1377                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1378                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1379         }
1380 }
1381
1382
1383 struct send_action_work {
1384         unsigned int freq;
1385         u8 dst[ETH_ALEN];
1386         u8 src[ETH_ALEN];
1387         u8 bssid[ETH_ALEN];
1388         size_t len;
1389         unsigned int wait_time;
1390         u8 buf[0];
1391 };
1392
1393
1394 static void wpas_p2p_free_send_action_work(struct wpa_supplicant *wpa_s)
1395 {
1396         struct send_action_work *awork = wpa_s->p2p_send_action_work->ctx;
1397
1398         wpa_printf(MSG_DEBUG,
1399                    "P2P: Free Action frame radio work @%p (freq=%u dst="
1400                    MACSTR " src=" MACSTR " bssid=" MACSTR " wait_time=%u)",
1401                    wpa_s->p2p_send_action_work, awork->freq,
1402                    MAC2STR(awork->dst), MAC2STR(awork->src),
1403                    MAC2STR(awork->bssid), awork->wait_time);
1404         wpa_hexdump(MSG_DEBUG, "P2P: Freeing pending Action frame",
1405                     awork->buf, awork->len);
1406         os_free(awork);
1407         wpa_s->p2p_send_action_work->ctx = NULL;
1408         radio_work_done(wpa_s->p2p_send_action_work);
1409         wpa_s->p2p_send_action_work = NULL;
1410 }
1411
1412
1413 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
1414                                               void *timeout_ctx)
1415 {
1416         struct wpa_supplicant *wpa_s = eloop_ctx;
1417
1418         if (!wpa_s->p2p_send_action_work)
1419                 return;
1420
1421         wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
1422         wpas_p2p_free_send_action_work(wpa_s);
1423 }
1424
1425
1426 static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s)
1427 {
1428         if (wpa_s->p2p_send_action_work) {
1429                 struct send_action_work *awork;
1430
1431                 awork = wpa_s->p2p_send_action_work->ctx;
1432                 wpa_printf(MSG_DEBUG,
1433                            "P2P: Clear Action TX work @%p (wait_time=%u)",
1434                            wpa_s->p2p_send_action_work, awork->wait_time);
1435                 if (awork->wait_time == 0) {
1436                         wpas_p2p_free_send_action_work(wpa_s);
1437                 } else {
1438                         /*
1439                          * In theory, this should not be needed, but number of
1440                          * places in the P2P code is still using non-zero wait
1441                          * time for the last Action frame in the sequence and
1442                          * some of these do not call send_action_done().
1443                          */
1444                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1445                                              wpa_s, NULL);
1446                         eloop_register_timeout(
1447                                 0, awork->wait_time * 1000,
1448                                 wpas_p2p_send_action_work_timeout,
1449                                 wpa_s, NULL);
1450                 }
1451         }
1452 }
1453
1454
1455 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
1456                                            unsigned int freq,
1457                                            const u8 *dst, const u8 *src,
1458                                            const u8 *bssid,
1459                                            const u8 *data, size_t data_len,
1460                                            enum offchannel_send_action_result
1461                                            result)
1462 {
1463         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
1464
1465         wpas_p2p_action_tx_clear(wpa_s);
1466
1467         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
1468                 return;
1469
1470         switch (result) {
1471         case OFFCHANNEL_SEND_ACTION_SUCCESS:
1472                 res = P2P_SEND_ACTION_SUCCESS;
1473                 break;
1474         case OFFCHANNEL_SEND_ACTION_NO_ACK:
1475                 res = P2P_SEND_ACTION_NO_ACK;
1476                 break;
1477         case OFFCHANNEL_SEND_ACTION_FAILED:
1478                 res = P2P_SEND_ACTION_FAILED;
1479                 break;
1480         }
1481
1482         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
1483
1484         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
1485             wpa_s->pending_pd_before_join &&
1486             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
1487              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
1488             wpa_s->p2p_fallback_to_go_neg) {
1489                 wpa_s->pending_pd_before_join = 0;
1490                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
1491                         "during p2p_connect-auto");
1492                 wpa_msg_global(wpa_s->parent, MSG_INFO,
1493                                P2P_EVENT_FALLBACK_TO_GO_NEG
1494                                "reason=no-ACK-to-PD-Req");
1495                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
1496                 return;
1497         }
1498 }
1499
1500
1501 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
1502 {
1503         struct wpa_supplicant *wpa_s = work->wpa_s;
1504         struct send_action_work *awork = work->ctx;
1505
1506         if (deinit) {
1507                 if (work->started) {
1508                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1509                                              wpa_s, NULL);
1510                         wpa_s->p2p_send_action_work = NULL;
1511                         offchannel_send_action_done(wpa_s);
1512                 }
1513                 os_free(awork);
1514                 return;
1515         }
1516
1517         if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1518                                    awork->bssid, awork->buf, awork->len,
1519                                    awork->wait_time,
1520                                    wpas_p2p_send_action_tx_status, 1) < 0) {
1521                 os_free(awork);
1522                 radio_work_done(work);
1523                 return;
1524         }
1525         wpa_s->p2p_send_action_work = work;
1526 }
1527
1528
1529 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1530                                  unsigned int freq, const u8 *dst,
1531                                  const u8 *src, const u8 *bssid, const u8 *buf,
1532                                  size_t len, unsigned int wait_time)
1533 {
1534         struct send_action_work *awork;
1535
1536         if (wpa_s->p2p_send_action_work) {
1537                 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1538                 return -1;
1539         }
1540
1541         awork = os_zalloc(sizeof(*awork) + len);
1542         if (awork == NULL)
1543                 return -1;
1544
1545         awork->freq = freq;
1546         os_memcpy(awork->dst, dst, ETH_ALEN);
1547         os_memcpy(awork->src, src, ETH_ALEN);
1548         os_memcpy(awork->bssid, bssid, ETH_ALEN);
1549         awork->len = len;
1550         awork->wait_time = wait_time;
1551         os_memcpy(awork->buf, buf, len);
1552
1553         if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
1554                            wpas_send_action_cb, awork) < 0) {
1555                 os_free(awork);
1556                 return -1;
1557         }
1558
1559         return 0;
1560 }
1561
1562
1563 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1564                             const u8 *src, const u8 *bssid, const u8 *buf,
1565                             size_t len, unsigned int wait_time)
1566 {
1567         struct wpa_supplicant *wpa_s = ctx;
1568         int listen_freq = -1, send_freq = -1;
1569
1570         if (wpa_s->p2p_listen_work)
1571                 listen_freq = wpa_s->p2p_listen_work->freq;
1572         if (wpa_s->p2p_send_action_work)
1573                 send_freq = wpa_s->p2p_send_action_work->freq;
1574         if (listen_freq != (int) freq && send_freq != (int) freq) {
1575                 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)",
1576                            listen_freq, send_freq);
1577                 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1578                                              len, wait_time);
1579         }
1580
1581         wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1582         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1583                                       wait_time,
1584                                       wpas_p2p_send_action_tx_status, 1);
1585 }
1586
1587
1588 static void wpas_send_action_done(void *ctx)
1589 {
1590         struct wpa_supplicant *wpa_s = ctx;
1591
1592         if (wpa_s->p2p_send_action_work) {
1593                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1594                                      wpa_s, NULL);
1595                 os_free(wpa_s->p2p_send_action_work->ctx);
1596                 radio_work_done(wpa_s->p2p_send_action_work);
1597                 wpa_s->p2p_send_action_work = NULL;
1598         }
1599
1600         offchannel_send_action_done(wpa_s);
1601 }
1602
1603
1604 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1605                                     struct p2p_go_neg_results *params)
1606 {
1607         if (wpa_s->go_params == NULL) {
1608                 wpa_s->go_params = os_malloc(sizeof(*params));
1609                 if (wpa_s->go_params == NULL)
1610                         return -1;
1611         }
1612         os_memcpy(wpa_s->go_params, params, sizeof(*params));
1613         return 0;
1614 }
1615
1616
1617 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1618                                     struct p2p_go_neg_results *res)
1619 {
1620         wpa_s->group_formation_reported = 0;
1621         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
1622                    " dev_addr " MACSTR " wps_method %d",
1623                    MAC2STR(res->peer_interface_addr),
1624                    MAC2STR(res->peer_device_addr), res->wps_method);
1625         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1626                           res->ssid, res->ssid_len);
1627         wpa_supplicant_ap_deinit(wpa_s);
1628         wpas_copy_go_neg_results(wpa_s, res);
1629         if (res->wps_method == WPS_PBC) {
1630                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
1631 #ifdef CONFIG_WPS_NFC
1632         } else if (res->wps_method == WPS_NFC) {
1633                 wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
1634                                    res->peer_interface_addr,
1635                                    wpa_s->parent->p2p_oob_dev_pw,
1636                                    wpa_s->parent->p2p_oob_dev_pw_id, 1,
1637                                    wpa_s->parent->p2p_oob_dev_pw_id ==
1638                                    DEV_PW_NFC_CONNECTION_HANDOVER ?
1639                                    wpa_s->parent->p2p_peer_oob_pubkey_hash :
1640                                    NULL,
1641                                    NULL, 0, 0);
1642 #endif /* CONFIG_WPS_NFC */
1643         } else {
1644                 u16 dev_pw_id = DEV_PW_DEFAULT;
1645                 if (wpa_s->p2p_wps_method == WPS_P2PS)
1646                         dev_pw_id = DEV_PW_P2PS_DEFAULT;
1647                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1648                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1649                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1650                                    wpa_s->p2p_pin, 1, dev_pw_id);
1651         }
1652 }
1653
1654
1655 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1656                                   struct wpa_ssid *ssid)
1657 {
1658         struct wpa_ssid *persistent;
1659         struct psk_list_entry *psk;
1660         struct hostapd_data *hapd;
1661
1662         if (!wpa_s->ap_iface)
1663                 return;
1664
1665         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
1666                                              ssid->ssid_len);
1667         if (persistent == NULL)
1668                 return;
1669
1670         hapd = wpa_s->ap_iface->bss[0];
1671
1672         dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1673                          list) {
1674                 struct hostapd_wpa_psk *hpsk;
1675
1676                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1677                         MACSTR " psk=%d",
1678                         MAC2STR(psk->addr), psk->p2p);
1679                 hpsk = os_zalloc(sizeof(*hpsk));
1680                 if (hpsk == NULL)
1681                         break;
1682                 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1683                 if (psk->p2p)
1684                         os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1685                 else
1686                         os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1687                 hpsk->next = hapd->conf->ssid.wpa_psk;
1688                 hapd->conf->ssid.wpa_psk = hpsk;
1689         }
1690 }
1691
1692
1693 static void p2p_go_dump_common_freqs(struct wpa_supplicant *wpa_s)
1694 {
1695         unsigned int i;
1696
1697         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Common group frequencies (len=%u):",
1698                 wpa_s->p2p_group_common_freqs_num);
1699
1700         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++)
1701                 wpa_dbg(wpa_s, MSG_DEBUG, "freq[%u]: %d",
1702                         i, wpa_s->p2p_group_common_freqs[i]);
1703 }
1704
1705
1706 static void p2p_go_save_group_common_freqs(struct wpa_supplicant *wpa_s,
1707                                            struct p2p_go_neg_results *params)
1708 {
1709         unsigned int i, len = int_array_len(wpa_s->go_params->freq_list);
1710
1711         wpa_s->p2p_group_common_freqs_num = 0;
1712         os_free(wpa_s->p2p_group_common_freqs);
1713         wpa_s->p2p_group_common_freqs = os_calloc(len, sizeof(int));
1714         if (!wpa_s->p2p_group_common_freqs)
1715                 return;
1716
1717         for (i = 0; i < len; i++) {
1718                 if (!wpa_s->go_params->freq_list[i])
1719                         break;
1720                 wpa_s->p2p_group_common_freqs[i] =
1721                         wpa_s->go_params->freq_list[i];
1722         }
1723         wpa_s->p2p_group_common_freqs_num = i;
1724 }
1725
1726
1727 static void p2p_config_write(struct wpa_supplicant *wpa_s)
1728 {
1729 #ifndef CONFIG_NO_CONFIG_WRITE
1730         if (wpa_s->parent->conf->update_config &&
1731             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
1732                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1733 #endif /* CONFIG_NO_CONFIG_WRITE */
1734 }
1735
1736
1737 static void p2p_go_configured(void *ctx, void *data)
1738 {
1739         struct wpa_supplicant *wpa_s = ctx;
1740         struct p2p_go_neg_results *params = data;
1741         struct wpa_ssid *ssid;
1742         int network_id = -1;
1743
1744         wpa_s->ap_configured_cb = NULL;
1745         wpa_s->ap_configured_cb_ctx = NULL;
1746         wpa_s->ap_configured_cb_data = NULL;
1747         if (!wpa_s->go_params) {
1748                 wpa_printf(MSG_ERROR,
1749                            "P2P: p2p_go_configured() called with wpa_s->go_params == NULL");
1750                 return;
1751         }
1752
1753         p2p_go_save_group_common_freqs(wpa_s, params);
1754         p2p_go_dump_common_freqs(wpa_s);
1755
1756         ssid = wpa_s->current_ssid;
1757         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1758                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1759                 if (wpa_s->global->p2p_group_formation == wpa_s)
1760                         wpa_s->global->p2p_group_formation = NULL;
1761                 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency,
1762                                        params->passphrase[0] == '\0' ?
1763                                        params->psk : NULL,
1764                                        params->passphrase,
1765                                        wpa_s->global->p2p_dev_addr,
1766                                        params->persistent_group, "");
1767                 wpa_s->group_formation_reported = 1;
1768
1769                 if (wpa_s->parent->p2ps_method_config_any) {
1770                         if (is_zero_ether_addr(wpa_s->parent->p2ps_join_addr)) {
1771                                 wpa_dbg(wpa_s, MSG_DEBUG,
1772                                         "P2PS: Setting default PIN for ANY");
1773                                 wpa_supplicant_ap_wps_pin(wpa_s, NULL,
1774                                                           "12345670", NULL, 0,
1775                                                           0);
1776                         } else {
1777                                 wpa_dbg(wpa_s, MSG_DEBUG,
1778                                         "P2PS: Setting default PIN for " MACSTR,
1779                                         MAC2STR(wpa_s->parent->p2ps_join_addr));
1780                                 wpa_supplicant_ap_wps_pin(
1781                                         wpa_s, wpa_s->parent->p2ps_join_addr,
1782                                         "12345670", NULL, 0, 0);
1783                         }
1784                         wpa_s->parent->p2ps_method_config_any = 0;
1785                 }
1786
1787                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1788                 if (params->persistent_group) {
1789                         network_id = wpas_p2p_store_persistent_group(
1790                                 wpa_s->parent, ssid,
1791                                 wpa_s->global->p2p_dev_addr);
1792                         wpas_p2p_add_psk_list(wpa_s, ssid);
1793                 }
1794                 if (network_id < 0)
1795                         network_id = ssid->id;
1796                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1797                 wpas_p2p_cross_connect_setup(wpa_s);
1798                 wpas_p2p_set_group_idle_timeout(wpa_s);
1799
1800                 if (wpa_s->p2p_first_connection_timeout) {
1801                         wpa_dbg(wpa_s, MSG_DEBUG,
1802                                 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1803                                 wpa_s->p2p_first_connection_timeout);
1804                         wpa_s->p2p_go_group_formation_completed = 0;
1805                         wpa_s->global->p2p_group_formation = wpa_s;
1806                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1807                                              wpa_s->parent, NULL);
1808                         eloop_register_timeout(
1809                                 wpa_s->p2p_first_connection_timeout, 0,
1810                                 wpas_p2p_group_formation_timeout,
1811                                 wpa_s->parent, NULL);
1812                 }
1813
1814                 return;
1815         }
1816
1817         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1818         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1819                                               params->peer_interface_addr)) {
1820                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1821                            "filtering");
1822                 return;
1823         }
1824         if (params->wps_method == WPS_PBC) {
1825                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1826                                           params->peer_device_addr);
1827 #ifdef CONFIG_WPS_NFC
1828         } else if (params->wps_method == WPS_NFC) {
1829                 if (wpa_s->parent->p2p_oob_dev_pw_id !=
1830                     DEV_PW_NFC_CONNECTION_HANDOVER &&
1831                     !wpa_s->parent->p2p_oob_dev_pw) {
1832                         wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1833                         return;
1834                 }
1835                 wpas_ap_wps_add_nfc_pw(
1836                         wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
1837                         wpa_s->parent->p2p_oob_dev_pw,
1838                         wpa_s->parent->p2p_peer_oob_pk_hash_known ?
1839                         wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
1840 #endif /* CONFIG_WPS_NFC */
1841         } else if (wpa_s->p2p_pin[0])
1842                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1843                                           wpa_s->p2p_pin, NULL, 0, 0);
1844         os_free(wpa_s->go_params);
1845         wpa_s->go_params = NULL;
1846 }
1847
1848
1849 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1850                               struct p2p_go_neg_results *params,
1851                               int group_formation)
1852 {
1853         struct wpa_ssid *ssid;
1854
1855         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1856         if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1857                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1858                         "results");
1859                 return;
1860         }
1861
1862         ssid = wpa_config_add_network(wpa_s->conf);
1863         if (ssid == NULL) {
1864                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1865                 return;
1866         }
1867
1868         wpa_s->show_group_started = 0;
1869         wpa_s->p2p_go_group_formation_completed = 0;
1870         wpa_s->group_formation_reported = 0;
1871         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
1872
1873         wpa_config_set_network_defaults(ssid);
1874         ssid->temporary = 1;
1875         ssid->p2p_group = 1;
1876         ssid->p2p_persistent_group = params->persistent_group;
1877         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1878                 WPAS_MODE_P2P_GO;
1879         ssid->frequency = params->freq;
1880         ssid->ht40 = params->ht40;
1881         ssid->vht = params->vht;
1882         ssid->max_oper_chwidth = params->max_oper_chwidth;
1883         ssid->vht_center_freq2 = params->vht_center_freq2;
1884         ssid->ssid = os_zalloc(params->ssid_len + 1);
1885         if (ssid->ssid) {
1886                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1887                 ssid->ssid_len = params->ssid_len;
1888         }
1889         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1890         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1891         ssid->proto = WPA_PROTO_RSN;
1892         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1893         ssid->group_cipher = WPA_CIPHER_CCMP;
1894         if (params->freq > 56160) {
1895                 /*
1896                  * Enable GCMP instead of CCMP as pairwise_cipher and
1897                  * group_cipher in 60 GHz.
1898                  */
1899                 ssid->pairwise_cipher = WPA_CIPHER_GCMP;
1900                 ssid->group_cipher = WPA_CIPHER_GCMP;
1901         }
1902         if (os_strlen(params->passphrase) > 0) {
1903                 ssid->passphrase = os_strdup(params->passphrase);
1904                 if (ssid->passphrase == NULL) {
1905                         wpa_msg_global(wpa_s, MSG_ERROR,
1906                                        "P2P: Failed to copy passphrase for GO");
1907                         wpa_config_remove_network(wpa_s->conf, ssid->id);
1908                         return;
1909                 }
1910         } else
1911                 ssid->passphrase = NULL;
1912         ssid->psk_set = params->psk_set;
1913         if (ssid->psk_set)
1914                 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1915         else if (ssid->passphrase)
1916                 wpa_config_update_psk(ssid);
1917         ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
1918
1919         wpa_s->ap_configured_cb = p2p_go_configured;
1920         wpa_s->ap_configured_cb_ctx = wpa_s;
1921         wpa_s->ap_configured_cb_data = wpa_s->go_params;
1922         wpa_s->scan_req = NORMAL_SCAN_REQ;
1923         wpa_s->connect_without_scan = ssid;
1924         wpa_s->reassociate = 1;
1925         wpa_s->disconnected = 0;
1926         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1927                 "start GO)");
1928         wpa_supplicant_req_scan(wpa_s, 0, 0);
1929 }
1930
1931
1932 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1933                                   const struct wpa_supplicant *src)
1934 {
1935         struct wpa_config *d;
1936         const struct wpa_config *s;
1937
1938         d = dst->conf;
1939         s = src->conf;
1940
1941 #define C(n) if (s->n) d->n = os_strdup(s->n)
1942         C(device_name);
1943         C(manufacturer);
1944         C(model_name);
1945         C(model_number);
1946         C(serial_number);
1947         C(config_methods);
1948 #undef C
1949
1950         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1951         os_memcpy(d->sec_device_type, s->sec_device_type,
1952                   sizeof(d->sec_device_type));
1953         d->num_sec_device_types = s->num_sec_device_types;
1954
1955         d->p2p_group_idle = s->p2p_group_idle;
1956         d->p2p_go_freq_change_policy = s->p2p_go_freq_change_policy;
1957         d->p2p_intra_bss = s->p2p_intra_bss;
1958         d->persistent_reconnect = s->persistent_reconnect;
1959         d->max_num_sta = s->max_num_sta;
1960         d->pbc_in_m1 = s->pbc_in_m1;
1961         d->ignore_old_scan_res = s->ignore_old_scan_res;
1962         d->beacon_int = s->beacon_int;
1963         d->dtim_period = s->dtim_period;
1964         d->p2p_go_ctwindow = s->p2p_go_ctwindow;
1965         d->disassoc_low_ack = s->disassoc_low_ack;
1966         d->disable_scan_offload = s->disable_scan_offload;
1967         d->passive_scan = s->passive_scan;
1968
1969         if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey) {
1970                 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
1971                 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
1972         }
1973         d->p2p_cli_probe = s->p2p_cli_probe;
1974 }
1975
1976
1977 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
1978                                       char *ifname, size_t len)
1979 {
1980         char *ifname_ptr = wpa_s->ifname;
1981
1982         if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
1983                        os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
1984                 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
1985         }
1986
1987         os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
1988         if (os_strlen(ifname) >= IFNAMSIZ &&
1989             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
1990                 int res;
1991
1992                 /* Try to avoid going over the IFNAMSIZ length limit */
1993                 res = os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
1994                 if (os_snprintf_error(len, res) && len)
1995                         ifname[len - 1] = '\0';
1996         }
1997 }
1998
1999
2000 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
2001                                         enum wpa_driver_if_type type)
2002 {
2003         char ifname[120], force_ifname[120];
2004
2005         if (wpa_s->pending_interface_name[0]) {
2006                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
2007                            "- skip creation of a new one");
2008                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
2009                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
2010                                    "unknown?! ifname='%s'",
2011                                    wpa_s->pending_interface_name);
2012                         return -1;
2013                 }
2014                 return 0;
2015         }
2016
2017         wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
2018         force_ifname[0] = '\0';
2019
2020         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
2021                    ifname);
2022         wpa_s->p2p_group_idx++;
2023
2024         wpa_s->pending_interface_type = type;
2025         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
2026                            wpa_s->pending_interface_addr, NULL) < 0) {
2027                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
2028                            "interface");
2029                 return -1;
2030         }
2031
2032         if (force_ifname[0]) {
2033                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
2034                            force_ifname);
2035                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
2036                            sizeof(wpa_s->pending_interface_name));
2037         } else
2038                 os_strlcpy(wpa_s->pending_interface_name, ifname,
2039                            sizeof(wpa_s->pending_interface_name));
2040         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
2041                    MACSTR, wpa_s->pending_interface_name,
2042                    MAC2STR(wpa_s->pending_interface_addr));
2043
2044         return 0;
2045 }
2046
2047
2048 static void wpas_p2p_remove_pending_group_interface(
2049         struct wpa_supplicant *wpa_s)
2050 {
2051         if (!wpa_s->pending_interface_name[0] ||
2052             is_zero_ether_addr(wpa_s->pending_interface_addr))
2053                 return; /* No pending virtual interface */
2054
2055         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
2056                    wpa_s->pending_interface_name);
2057         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
2058                           wpa_s->pending_interface_name);
2059         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2060         wpa_s->pending_interface_name[0] = '\0';
2061         wpa_s->global->pending_group_iface_for_p2ps = 0;
2062 }
2063
2064
2065 static struct wpa_supplicant *
2066 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
2067 {
2068         struct wpa_interface iface;
2069         struct wpa_supplicant *group_wpa_s;
2070
2071         if (!wpa_s->pending_interface_name[0]) {
2072                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
2073                 if (!wpas_p2p_create_iface(wpa_s))
2074                         return NULL;
2075                 /*
2076                  * Something has forced us to remove the pending interface; try
2077                  * to create a new one and hope for the best that we will get
2078                  * the same local address.
2079                  */
2080                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
2081                                                  WPA_IF_P2P_CLIENT) < 0)
2082                         return NULL;
2083         }
2084
2085         os_memset(&iface, 0, sizeof(iface));
2086         iface.ifname = wpa_s->pending_interface_name;
2087         iface.driver = wpa_s->driver->name;
2088         if (wpa_s->conf->ctrl_interface == NULL &&
2089             wpa_s->parent != wpa_s &&
2090             wpa_s->p2p_mgmt &&
2091             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
2092                 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
2093         else
2094                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
2095         iface.driver_param = wpa_s->conf->driver_param;
2096         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
2097         if (group_wpa_s == NULL) {
2098                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
2099                            "wpa_supplicant interface");
2100                 return NULL;
2101         }
2102         wpa_s->pending_interface_name[0] = '\0';
2103         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
2104                 P2P_GROUP_INTERFACE_CLIENT;
2105         wpa_s->global->p2p_group_formation = group_wpa_s;
2106         wpa_s->global->pending_group_iface_for_p2ps = 0;
2107
2108         wpas_p2p_clone_config(group_wpa_s, wpa_s);
2109
2110         return group_wpa_s;
2111 }
2112
2113
2114 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
2115                                              void *timeout_ctx)
2116 {
2117         struct wpa_supplicant *wpa_s = eloop_ctx;
2118         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
2119         wpas_p2p_group_formation_failed(wpa_s, 0);
2120 }
2121
2122
2123 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
2124                                             int already_deleted)
2125 {
2126         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2127                              wpa_s->parent, NULL);
2128         if (wpa_s->global->p2p)
2129                 p2p_group_formation_failed(wpa_s->global->p2p);
2130         wpas_group_formation_completed(wpa_s, 0, already_deleted);
2131 }
2132
2133
2134 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
2135 {
2136         wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
2137         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2138                              wpa_s->parent, NULL);
2139         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2140                                wpa_s->parent, NULL);
2141         wpa_s->global->p2p_fail_on_wps_complete = 0;
2142 }
2143
2144
2145 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
2146 {
2147         if (wpa_s->global->p2p_group_formation != wpa_s)
2148                 return;
2149         /* Speed up group formation timeout since this cannot succeed */
2150         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2151                              wpa_s->parent, NULL);
2152         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2153                                wpa_s->parent, NULL);
2154 }
2155
2156
2157 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
2158 {
2159         struct wpa_supplicant *wpa_s = ctx;
2160
2161         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2162                 wpa_drv_cancel_remain_on_channel(wpa_s);
2163                 wpa_s->off_channel_freq = 0;
2164                 wpa_s->roc_waiting_drv_freq = 0;
2165         }
2166
2167         if (res->status) {
2168                 wpa_msg_global(wpa_s, MSG_INFO,
2169                                P2P_EVENT_GO_NEG_FAILURE "status=%d",
2170                                res->status);
2171                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
2172                 wpas_p2p_remove_pending_group_interface(wpa_s);
2173                 return;
2174         }
2175
2176         if (!res->role_go) {
2177                 /* Inform driver of the operating channel of GO. */
2178                 wpa_drv_set_prob_oper_freq(wpa_s, res->freq);
2179         }
2180
2181         if (wpa_s->p2p_go_ht40)
2182                 res->ht40 = 1;
2183         if (wpa_s->p2p_go_vht)
2184                 res->vht = 1;
2185         res->max_oper_chwidth = wpa_s->p2p_go_max_oper_chwidth;
2186         res->vht_center_freq2 = wpa_s->p2p_go_vht_center_freq2;
2187
2188         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
2189                        "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
2190                        " wps_method=%s",
2191                        res->role_go ? "GO" : "client", res->freq, res->ht40,
2192                        MAC2STR(res->peer_device_addr),
2193                        MAC2STR(res->peer_interface_addr),
2194                        p2p_wps_method_text(res->wps_method));
2195         wpas_notify_p2p_go_neg_completed(wpa_s, res);
2196
2197         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
2198                 struct wpa_ssid *ssid;
2199                 ssid = wpa_config_get_network(wpa_s->conf,
2200                                               wpa_s->p2p_persistent_id);
2201                 if (ssid && ssid->disabled == 2 &&
2202                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
2203                         size_t len = os_strlen(ssid->passphrase);
2204                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
2205                                    "on requested persistent group");
2206                         os_memcpy(res->passphrase, ssid->passphrase, len);
2207                         res->passphrase[len] = '\0';
2208                 }
2209         }
2210
2211         if (wpa_s->create_p2p_iface) {
2212                 struct wpa_supplicant *group_wpa_s =
2213                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
2214                 if (group_wpa_s == NULL) {
2215                         wpas_p2p_remove_pending_group_interface(wpa_s);
2216                         eloop_cancel_timeout(wpas_p2p_long_listen_timeout,
2217                                              wpa_s, NULL);
2218                         wpas_p2p_group_formation_failed(wpa_s, 1);
2219                         return;
2220                 }
2221                 if (group_wpa_s != wpa_s) {
2222                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
2223                                   sizeof(group_wpa_s->p2p_pin));
2224                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
2225                 }
2226                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2227                 wpa_s->pending_interface_name[0] = '\0';
2228                 group_wpa_s->p2p_in_provisioning = 1;
2229
2230                 if (res->role_go) {
2231                         wpas_start_wps_go(group_wpa_s, res, 1);
2232                 } else {
2233                         os_get_reltime(&group_wpa_s->scan_min_time);
2234                         wpas_start_wps_enrollee(group_wpa_s, res);
2235                 }
2236         } else {
2237                 wpa_s->p2p_in_provisioning = 1;
2238                 wpa_s->global->p2p_group_formation = wpa_s;
2239
2240                 if (res->role_go) {
2241                         wpas_start_wps_go(wpa_s, res, 1);
2242                 } else {
2243                         os_get_reltime(&wpa_s->scan_min_time);
2244                         wpas_start_wps_enrollee(ctx, res);
2245                 }
2246         }
2247
2248         wpa_s->p2p_long_listen = 0;
2249         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2250
2251         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2252         eloop_register_timeout(15 + res->peer_config_timeout / 100,
2253                                (res->peer_config_timeout % 100) * 10000,
2254                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
2255 }
2256
2257
2258 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id,
2259                                u8 go_intent)
2260 {
2261         struct wpa_supplicant *wpa_s = ctx;
2262         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
2263                        " dev_passwd_id=%u go_intent=%u", MAC2STR(src),
2264                        dev_passwd_id, go_intent);
2265
2266         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id, go_intent);
2267 }
2268
2269
2270 static void wpas_dev_found(void *ctx, const u8 *addr,
2271                            const struct p2p_peer_info *info,
2272                            int new_device)
2273 {
2274 #ifndef CONFIG_NO_STDOUT_DEBUG
2275         struct wpa_supplicant *wpa_s = ctx;
2276         char devtype[WPS_DEV_TYPE_BUFSIZE];
2277         char *wfd_dev_info_hex = NULL;
2278
2279 #ifdef CONFIG_WIFI_DISPLAY
2280         wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
2281                                                     WFD_SUBELEM_DEVICE_INFO);
2282 #endif /* CONFIG_WIFI_DISPLAY */
2283
2284         if (info->p2ps_instance) {
2285                 char str[256];
2286                 const u8 *buf = wpabuf_head(info->p2ps_instance);
2287                 size_t len = wpabuf_len(info->p2ps_instance);
2288
2289                 while (len) {
2290                         u32 id;
2291                         u16 methods;
2292                         u8 str_len;
2293
2294                         if (len < 4 + 2 + 1)
2295                                 break;
2296                         id = WPA_GET_LE32(buf);
2297                         buf += sizeof(u32);
2298                         methods = WPA_GET_BE16(buf);
2299                         buf += sizeof(u16);
2300                         str_len = *buf++;
2301                         if (str_len > len - 4 - 2 - 1)
2302                                 break;
2303                         os_memcpy(str, buf, str_len);
2304                         str[str_len] = '\0';
2305                         buf += str_len;
2306                         len -= str_len + sizeof(u32) + sizeof(u16) + sizeof(u8);
2307
2308                         wpa_msg_global(wpa_s, MSG_INFO,
2309                                        P2P_EVENT_DEVICE_FOUND MACSTR
2310                                        " p2p_dev_addr=" MACSTR
2311                                        " pri_dev_type=%s name='%s'"
2312                                        " config_methods=0x%x"
2313                                        " dev_capab=0x%x"
2314                                        " group_capab=0x%x"
2315                                        " adv_id=%x asp_svc=%s%s",
2316                                        MAC2STR(addr),
2317                                        MAC2STR(info->p2p_device_addr),
2318                                        wps_dev_type_bin2str(
2319                                                info->pri_dev_type,
2320                                                devtype, sizeof(devtype)),
2321                                        info->device_name, methods,
2322                                        info->dev_capab, info->group_capab,
2323                                        id, str,
2324                                        info->vendor_elems ?
2325                                        " vendor_elems=1" : "");
2326                 }
2327                 goto done;
2328         }
2329
2330         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
2331                        " p2p_dev_addr=" MACSTR
2332                        " pri_dev_type=%s name='%s' config_methods=0x%x "
2333                        "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d",
2334                        MAC2STR(addr), MAC2STR(info->p2p_device_addr),
2335                        wps_dev_type_bin2str(info->pri_dev_type, devtype,
2336                                             sizeof(devtype)),
2337                        info->device_name, info->config_methods,
2338                        info->dev_capab, info->group_capab,
2339                        wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
2340                        wfd_dev_info_hex ? wfd_dev_info_hex : "",
2341                        info->vendor_elems ? " vendor_elems=1" : "",
2342                        new_device);
2343
2344 done:
2345         os_free(wfd_dev_info_hex);
2346 #endif /* CONFIG_NO_STDOUT_DEBUG */
2347
2348         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
2349 }
2350
2351
2352 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
2353 {
2354         struct wpa_supplicant *wpa_s = ctx;
2355
2356         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
2357                        "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
2358
2359         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
2360 }
2361
2362
2363 static void wpas_find_stopped(void *ctx)
2364 {
2365         struct wpa_supplicant *wpa_s = ctx;
2366         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
2367         wpas_notify_p2p_find_stopped(wpa_s);
2368 }
2369
2370
2371 struct wpas_p2p_listen_work {
2372         unsigned int freq;
2373         unsigned int duration;
2374         struct wpabuf *probe_resp_ie;
2375 };
2376
2377
2378 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
2379 {
2380         if (lwork == NULL)
2381                 return;
2382         wpabuf_free(lwork->probe_resp_ie);
2383         os_free(lwork);
2384 }
2385
2386
2387 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
2388 {
2389         struct wpas_p2p_listen_work *lwork;
2390
2391         if (!wpa_s->p2p_listen_work)
2392                 return;
2393
2394         lwork = wpa_s->p2p_listen_work->ctx;
2395         wpas_p2p_listen_work_free(lwork);
2396         radio_work_done(wpa_s->p2p_listen_work);
2397         wpa_s->p2p_listen_work = NULL;
2398 }
2399
2400
2401 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
2402 {
2403         struct wpa_supplicant *wpa_s = work->wpa_s;
2404         struct wpas_p2p_listen_work *lwork = work->ctx;
2405         unsigned int duration;
2406
2407         if (deinit) {
2408                 if (work->started) {
2409                         wpa_s->p2p_listen_work = NULL;
2410                         wpas_stop_listen(wpa_s);
2411                 }
2412                 wpas_p2p_listen_work_free(lwork);
2413                 return;
2414         }
2415
2416         wpa_s->p2p_listen_work = work;
2417
2418         wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
2419
2420         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
2421                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
2422                            "report received Probe Request frames");
2423                 wpas_p2p_listen_work_done(wpa_s);
2424                 return;
2425         }
2426
2427         wpa_s->pending_listen_freq = lwork->freq;
2428         wpa_s->pending_listen_duration = lwork->duration;
2429
2430         duration = lwork->duration;
2431 #ifdef CONFIG_TESTING_OPTIONS
2432         if (wpa_s->extra_roc_dur) {
2433                 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u",
2434                            duration, duration + wpa_s->extra_roc_dur);
2435                 duration += wpa_s->extra_roc_dur;
2436         }
2437 #endif /* CONFIG_TESTING_OPTIONS */
2438
2439         if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) {
2440                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
2441                            "to remain on channel (%u MHz) for Listen "
2442                            "state", lwork->freq);
2443                 wpas_p2p_listen_work_done(wpa_s);
2444                 wpa_s->pending_listen_freq = 0;
2445                 return;
2446         }
2447         wpa_s->off_channel_freq = 0;
2448         wpa_s->roc_waiting_drv_freq = lwork->freq;
2449 }
2450
2451
2452 static int wpas_start_listen(void *ctx, unsigned int freq,
2453                              unsigned int duration,
2454                              const struct wpabuf *probe_resp_ie)
2455 {
2456         struct wpa_supplicant *wpa_s = ctx;
2457         struct wpas_p2p_listen_work *lwork;
2458
2459         if (wpa_s->p2p_listen_work) {
2460                 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
2461                 return -1;
2462         }
2463
2464         lwork = os_zalloc(sizeof(*lwork));
2465         if (lwork == NULL)
2466                 return -1;
2467         lwork->freq = freq;
2468         lwork->duration = duration;
2469         if (probe_resp_ie) {
2470                 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
2471                 if (lwork->probe_resp_ie == NULL) {
2472                         wpas_p2p_listen_work_free(lwork);
2473                         return -1;
2474                 }
2475         }
2476
2477         if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
2478                            lwork) < 0) {
2479                 wpas_p2p_listen_work_free(lwork);
2480                 return -1;
2481         }
2482
2483         return 0;
2484 }
2485
2486
2487 static void wpas_stop_listen(void *ctx)
2488 {
2489         struct wpa_supplicant *wpa_s = ctx;
2490         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2491                 wpa_drv_cancel_remain_on_channel(wpa_s);
2492                 wpa_s->off_channel_freq = 0;
2493                 wpa_s->roc_waiting_drv_freq = 0;
2494         }
2495         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
2496
2497         /*
2498          * Don't cancel Probe Request RX reporting for a connected P2P Client
2499          * handling Probe Request frames.
2500          */
2501         if (!wpa_s->p2p_cli_probe)
2502                 wpa_drv_probe_req_report(wpa_s, 0);
2503
2504         wpas_p2p_listen_work_done(wpa_s);
2505 }
2506
2507
2508 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf,
2509                                 unsigned int freq)
2510 {
2511         struct wpa_supplicant *wpa_s = ctx;
2512         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1,
2513                                  freq);
2514 }
2515
2516
2517 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2518                                          const u8 *peer, const char *params,
2519                                          unsigned int generated_pin)
2520 {
2521         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2522                        " %08d%s", MAC2STR(peer), generated_pin, params);
2523 }
2524
2525
2526 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2527                                         const u8 *peer, const char *params)
2528 {
2529         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2530                        "%s", MAC2STR(peer), params);
2531 }
2532
2533
2534 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2535                                const u8 *dev_addr, const u8 *pri_dev_type,
2536                                const char *dev_name, u16 supp_config_methods,
2537                                u8 dev_capab, u8 group_capab, const u8 *group_id,
2538                                size_t group_id_len)
2539 {
2540         struct wpa_supplicant *wpa_s = ctx;
2541         char devtype[WPS_DEV_TYPE_BUFSIZE];
2542         char params[300];
2543         u8 empty_dev_type[8];
2544         unsigned int generated_pin = 0;
2545         struct wpa_supplicant *group = NULL;
2546         int res;
2547
2548         if (group_id) {
2549                 for (group = wpa_s->global->ifaces; group; group = group->next)
2550                 {
2551                         struct wpa_ssid *s = group->current_ssid;
2552                         if (s != NULL &&
2553                             s->mode == WPAS_MODE_P2P_GO &&
2554                             group_id_len - ETH_ALEN == s->ssid_len &&
2555                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2556                                       s->ssid_len) == 0)
2557                                 break;
2558                 }
2559         }
2560
2561         if (pri_dev_type == NULL) {
2562                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2563                 pri_dev_type = empty_dev_type;
2564         }
2565         res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2566                           " pri_dev_type=%s name='%s' config_methods=0x%x "
2567                           "dev_capab=0x%x group_capab=0x%x%s%s",
2568                           MAC2STR(dev_addr),
2569                           wps_dev_type_bin2str(pri_dev_type, devtype,
2570                                                sizeof(devtype)),
2571                           dev_name, supp_config_methods, dev_capab, group_capab,
2572                           group ? " group=" : "",
2573                           group ? group->ifname : "");
2574         if (os_snprintf_error(sizeof(params), res))
2575                 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated");
2576         params[sizeof(params) - 1] = '\0';
2577
2578         if (config_methods & WPS_CONFIG_DISPLAY) {
2579                 generated_pin = wps_generate_pin();
2580                 wpas_prov_disc_local_display(wpa_s, peer, params,
2581                                              generated_pin);
2582         } else if (config_methods & WPS_CONFIG_KEYPAD)
2583                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2584         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2585                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2586                                MACSTR "%s", MAC2STR(peer), params);
2587
2588         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2589                                             P2P_PROV_DISC_SUCCESS,
2590                                             config_methods, generated_pin);
2591 }
2592
2593
2594 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2595 {
2596         struct wpa_supplicant *wpa_s = ctx;
2597         unsigned int generated_pin = 0;
2598         char params[20];
2599
2600         if (wpa_s->pending_pd_before_join &&
2601             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2602              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2603                 wpa_s->pending_pd_before_join = 0;
2604                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2605                            "join-existing-group operation");
2606                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2607                 return;
2608         }
2609
2610         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2611             wpa_s->pending_pd_use == AUTO_PD_GO_NEG) {
2612                 int res;
2613
2614                 res = os_snprintf(params, sizeof(params), " peer_go=%d",
2615                                   wpa_s->pending_pd_use == AUTO_PD_JOIN);
2616                 if (os_snprintf_error(sizeof(params), res))
2617                         params[sizeof(params) - 1] = '\0';
2618         } else
2619                 params[0] = '\0';
2620
2621         if (config_methods & WPS_CONFIG_DISPLAY)
2622                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2623         else if (config_methods & WPS_CONFIG_KEYPAD) {
2624                 generated_pin = wps_generate_pin();
2625                 wpas_prov_disc_local_display(wpa_s, peer, params,
2626                                              generated_pin);
2627         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2628                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2629                                MACSTR "%s", MAC2STR(peer), params);
2630
2631         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2632                                             P2P_PROV_DISC_SUCCESS,
2633                                             config_methods, generated_pin);
2634 }
2635
2636
2637 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2638                                 enum p2p_prov_disc_status status,
2639                                 u32 adv_id, const u8 *adv_mac,
2640                                 const char *deferred_session_resp)
2641 {
2642         struct wpa_supplicant *wpa_s = ctx;
2643
2644         if (wpa_s->p2p_fallback_to_go_neg) {
2645                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2646                         "failed - fall back to GO Negotiation");
2647                 wpa_msg_global(wpa_s->parent, MSG_INFO,
2648                                P2P_EVENT_FALLBACK_TO_GO_NEG
2649                                "reason=PD-failed");
2650                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2651                 return;
2652         }
2653
2654         if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2655                 wpa_s->pending_pd_before_join = 0;
2656                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2657                            "join-existing-group operation (no ACK for PD "
2658                            "Req attempts)");
2659                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2660                 return;
2661         }
2662
2663         if (adv_id && adv_mac && deferred_session_resp) {
2664                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2665                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x"
2666                                " deferred_session_resp='%s'",
2667                                MAC2STR(peer), status, adv_id,
2668                                deferred_session_resp);
2669         } else if (adv_id && adv_mac) {
2670                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2671                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x",
2672                                MAC2STR(peer), status, adv_id);
2673         } else {
2674                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2675                                " p2p_dev_addr=" MACSTR " status=%d",
2676                                MAC2STR(peer), status);
2677         }
2678
2679         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2680                                             status, 0, 0);
2681 }
2682
2683
2684 static int freq_included(struct wpa_supplicant *wpa_s,
2685                          const struct p2p_channels *channels,
2686                          unsigned int freq)
2687 {
2688         if ((channels == NULL || p2p_channels_includes_freq(channels, freq)) &&
2689             wpas_p2p_go_is_peer_freq(wpa_s, freq))
2690                 return 1;
2691         return 0;
2692 }
2693
2694
2695 static void wpas_p2p_go_update_common_freqs(struct wpa_supplicant *wpa_s)
2696 {
2697         unsigned int num = P2P_MAX_CHANNELS;
2698         int *common_freqs;
2699         int ret;
2700
2701         p2p_go_dump_common_freqs(wpa_s);
2702         common_freqs = os_calloc(num, sizeof(int));
2703         if (!common_freqs)
2704                 return;
2705
2706         ret = p2p_group_get_common_freqs(wpa_s->p2p_group, common_freqs, &num);
2707         if (ret < 0) {
2708                 wpa_dbg(wpa_s, MSG_DEBUG,
2709                         "P2P: Failed to get group common freqs");
2710                 os_free(common_freqs);
2711                 return;
2712         }
2713
2714         os_free(wpa_s->p2p_group_common_freqs);
2715         wpa_s->p2p_group_common_freqs = common_freqs;
2716         wpa_s->p2p_group_common_freqs_num = num;
2717         p2p_go_dump_common_freqs(wpa_s);
2718 }
2719
2720
2721 /*
2722  * Check if the given frequency is one of the possible operating frequencies
2723  * set after the completion of the GO Negotiation.
2724  */
2725 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq)
2726 {
2727         unsigned int i;
2728
2729         p2p_go_dump_common_freqs(wpa_s);
2730
2731         /* assume no restrictions */
2732         if (!wpa_s->p2p_group_common_freqs_num)
2733                 return 1;
2734
2735         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
2736                 if (wpa_s->p2p_group_common_freqs[i] == freq)
2737                         return 1;
2738         }
2739         return 0;
2740 }
2741
2742
2743 static int wpas_sta_check_ecsa(struct hostapd_data *hapd,
2744                                struct sta_info *sta, void *ctx)
2745 {
2746         int *ecsa_support = ctx;
2747
2748         *ecsa_support &= sta->ecsa_supported;
2749
2750         return 0;
2751 }
2752
2753
2754 /* Check if all the peers support eCSA */
2755 static int wpas_p2p_go_clients_support_ecsa(struct wpa_supplicant *wpa_s)
2756 {
2757         int ecsa_support = 1;
2758
2759         ap_for_each_sta(wpa_s->ap_iface->bss[0], wpas_sta_check_ecsa,
2760                         &ecsa_support);
2761
2762         return ecsa_support;
2763 }
2764
2765
2766 /**
2767  * Pick the best frequency to use from all the currently used frequencies.
2768  */
2769 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s,
2770                                         struct wpa_used_freq_data *freqs,
2771                                         unsigned int num)
2772 {
2773         unsigned int i, c;
2774
2775         /* find a candidate freq that is supported by P2P */
2776         for (c = 0; c < num; c++)
2777                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq))
2778                         break;
2779
2780         if (c == num)
2781                 return 0;
2782
2783         /* once we have a candidate, try to find a 'better' one */
2784         for (i = c + 1; i < num; i++) {
2785                 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
2786                         continue;
2787
2788                 /*
2789                  * 1. Infrastructure station interfaces have higher preference.
2790                  * 2. P2P Clients have higher preference.
2791                  * 3. All others.
2792                  */
2793                 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) {
2794                         c = i;
2795                         break;
2796                 }
2797
2798                 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT))
2799                         c = i;
2800         }
2801         return freqs[c].freq;
2802 }
2803
2804
2805 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2806                                   const u8 *go_dev_addr, const u8 *ssid,
2807                                   size_t ssid_len, int *go, u8 *group_bssid,
2808                                   int *force_freq, int persistent_group,
2809                                   const struct p2p_channels *channels,
2810                                   int dev_pw_id)
2811 {
2812         struct wpa_supplicant *wpa_s = ctx;
2813         struct wpa_ssid *s;
2814         struct wpa_used_freq_data *freqs;
2815         struct wpa_supplicant *grp;
2816         int best_freq;
2817
2818         if (!persistent_group) {
2819                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2820                            " to join an active group (SSID: %s)",
2821                            MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2822                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2823                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2824                      == 0 ||
2825                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2826                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2827                                    "authorized invitation");
2828                         goto accept_inv;
2829                 }
2830
2831 #ifdef CONFIG_WPS_NFC
2832                 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled &&
2833                     dev_pw_id == wpa_s->p2p_oob_dev_pw_id) {
2834                         wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
2835                         wpa_s->p2p_wps_method = WPS_NFC;
2836                         wpa_s->pending_join_wps_method = WPS_NFC;
2837                         os_memcpy(wpa_s->pending_join_dev_addr,
2838                                   go_dev_addr, ETH_ALEN);
2839                         os_memcpy(wpa_s->pending_join_iface_addr,
2840                                   bssid, ETH_ALEN);
2841                         goto accept_inv;
2842                 }
2843 #endif /* CONFIG_WPS_NFC */
2844
2845                 /*
2846                  * Do not accept the invitation automatically; notify user and
2847                  * request approval.
2848                  */
2849                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2850         }
2851
2852         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2853         if (grp) {
2854                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2855                            "running persistent group");
2856                 if (*go)
2857                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2858                 goto accept_inv;
2859         }
2860
2861         if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2862             os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2863                 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2864                            "invitation to re-invoke a persistent group");
2865                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
2866         } else if (!wpa_s->conf->persistent_reconnect)
2867                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2868
2869         for (s = wpa_s->conf->ssid; s; s = s->next) {
2870                 if (s->disabled == 2 &&
2871                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2872                     s->ssid_len == ssid_len &&
2873                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2874                         break;
2875         }
2876
2877         if (!s) {
2878                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2879                            " requested reinvocation of an unknown group",
2880                            MAC2STR(sa));
2881                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2882         }
2883
2884         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2885                 *go = 1;
2886                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2887                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2888                                    "interface is already in use - reject "
2889                                    "invitation");
2890                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2891                 }
2892                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2893         } else if (s->mode == WPAS_MODE_P2P_GO) {
2894                 *go = 1;
2895                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2896                 {
2897                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2898                                    "interface address for the group");
2899                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2900                 }
2901                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2902                           ETH_ALEN);
2903         }
2904
2905 accept_inv:
2906         wpas_p2p_set_own_freq_preference(wpa_s, 0);
2907
2908         best_freq = 0;
2909         freqs = os_calloc(wpa_s->num_multichan_concurrent,
2910                           sizeof(struct wpa_used_freq_data));
2911         if (freqs) {
2912                 int num_channels = wpa_s->num_multichan_concurrent;
2913                 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels);
2914                 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
2915                 os_free(freqs);
2916         }
2917
2918         /* Get one of the frequencies currently in use */
2919         if (best_freq > 0) {
2920                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
2921                 wpas_p2p_set_own_freq_preference(wpa_s, best_freq);
2922
2923                 if (wpa_s->num_multichan_concurrent < 2 ||
2924                     wpas_p2p_num_unused_channels(wpa_s) < 1) {
2925                         wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
2926                         *force_freq = best_freq;
2927                 }
2928         }
2929
2930         if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
2931             wpas_p2p_num_unused_channels(wpa_s) > 0) {
2932                 if (*go == 0) {
2933                         /* We are the client */
2934                         wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
2935                                    "running a GO but we are capable of MCC, "
2936                                    "figure out the best channel to use");
2937                         *force_freq = 0;
2938                 } else if (!freq_included(wpa_s, channels, *force_freq)) {
2939                         /* We are the GO, and *force_freq is not in the
2940                          * intersection */
2941                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
2942                                    "in intersection but we are capable of MCC, "
2943                                    "figure out the best channel to use",
2944                                    *force_freq);
2945                         *force_freq = 0;
2946                 }
2947         }
2948
2949         return P2P_SC_SUCCESS;
2950 }
2951
2952
2953 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
2954                                      const u8 *ssid, size_t ssid_len,
2955                                      const u8 *go_dev_addr, u8 status,
2956                                      int op_freq)
2957 {
2958         struct wpa_supplicant *wpa_s = ctx;
2959         struct wpa_ssid *s;
2960
2961         for (s = wpa_s->conf->ssid; s; s = s->next) {
2962                 if (s->disabled == 2 &&
2963                     s->ssid_len == ssid_len &&
2964                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2965                         break;
2966         }
2967
2968         if (status == P2P_SC_SUCCESS) {
2969                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2970                            " was accepted; op_freq=%d MHz, SSID=%s",
2971                            MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
2972                 if (s) {
2973                         int go = s->mode == WPAS_MODE_P2P_GO;
2974                         wpas_p2p_group_add_persistent(
2975                                 wpa_s, s, go, 0, op_freq, 0, 0, 0, 0, NULL,
2976                                 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0,
2977                                 1);
2978                 } else if (bssid) {
2979                         wpa_s->user_initiated_pd = 0;
2980                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
2981                                       wpa_s->p2p_wps_method, 0, op_freq,
2982                                       ssid, ssid_len);
2983                 }
2984                 return;
2985         }
2986
2987         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
2988                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2989                            " was rejected (status %u)", MAC2STR(sa), status);
2990                 return;
2991         }
2992
2993         if (!s) {
2994                 if (bssid) {
2995                         wpa_msg_global(wpa_s, MSG_INFO,
2996                                        P2P_EVENT_INVITATION_RECEIVED
2997                                        "sa=" MACSTR " go_dev_addr=" MACSTR
2998                                        " bssid=" MACSTR " unknown-network",
2999                                        MAC2STR(sa), MAC2STR(go_dev_addr),
3000                                        MAC2STR(bssid));
3001                 } else {
3002                         wpa_msg_global(wpa_s, MSG_INFO,
3003                                        P2P_EVENT_INVITATION_RECEIVED
3004                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3005                                        " unknown-network",
3006                                        MAC2STR(sa), MAC2STR(go_dev_addr));
3007                 }
3008                 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr,
3009                                                     bssid, 0, op_freq);
3010                 return;
3011         }
3012
3013         if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
3014                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3015                                "sa=" MACSTR " persistent=%d freq=%d",
3016                                MAC2STR(sa), s->id, op_freq);
3017         } else {
3018                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3019                                "sa=" MACSTR " persistent=%d",
3020                                MAC2STR(sa), s->id);
3021         }
3022         wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr, bssid,
3023                                             s->id, op_freq);
3024 }
3025
3026
3027 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
3028                                         struct wpa_ssid *ssid,
3029                                         const u8 *peer, int inv)
3030 {
3031         size_t i;
3032         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
3033
3034         if (ssid == NULL)
3035                 return;
3036
3037         for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
3038                 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer,
3039                               ETH_ALEN) == 0)
3040                         break;
3041         }
3042         if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) {
3043                 if (ssid->mode != WPAS_MODE_P2P_GO &&
3044                     os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
3045                         wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
3046                                    "due to invitation result", ssid->id);
3047                         wpas_notify_network_removed(wpa_s, ssid);
3048                         wpa_config_remove_network(wpa_s->conf, ssid->id);
3049                         return;
3050                 }
3051                 return; /* Peer not found in client list */
3052         }
3053
3054         wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
3055                    "group %d client list%s",
3056                    MAC2STR(peer), ssid->id,
3057                    inv ? " due to invitation result" : "");
3058         os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN,
3059                    ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3060                    (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3061         ssid->num_p2p_clients--;
3062         if (p2p_wpa_s->conf->update_config &&
3063             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
3064                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
3065 }
3066
3067
3068 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
3069                                           const u8 *peer)
3070 {
3071         struct wpa_ssid *ssid;
3072
3073         wpa_s = wpa_s->global->p2p_invite_group;
3074         if (wpa_s == NULL)
3075                 return; /* No known invitation group */
3076         ssid = wpa_s->current_ssid;
3077         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
3078             !ssid->p2p_persistent_group)
3079                 return; /* Not operating as a GO in persistent group */
3080         ssid = wpas_p2p_get_persistent(wpa_s->parent, peer,
3081                                        ssid->ssid, ssid->ssid_len);
3082         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3083 }
3084
3085
3086 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
3087                                    const struct p2p_channels *channels,
3088                                    const u8 *peer, int neg_freq,
3089                                    int peer_oper_freq)
3090 {
3091         struct wpa_supplicant *wpa_s = ctx;
3092         struct wpa_ssid *ssid;
3093         int freq;
3094
3095         if (bssid) {
3096                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3097                                "status=%d " MACSTR,
3098                                status, MAC2STR(bssid));
3099         } else {
3100                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3101                                "status=%d ", status);
3102         }
3103         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
3104
3105         wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
3106                    status, MAC2STR(peer));
3107         if (wpa_s->pending_invite_ssid_id == -1) {
3108                 struct wpa_supplicant *group_if =
3109                         wpa_s->global->p2p_invite_group;
3110
3111                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
3112                         wpas_remove_persistent_client(wpa_s, peer);
3113
3114                 /*
3115                  * Invitation to an active group. If this is successful and we
3116                  * are the GO, set the client wait to postpone some concurrent
3117                  * operations and to allow provisioning and connection to happen
3118                  * more quickly.
3119                  */
3120                 if (status == P2P_SC_SUCCESS &&
3121                     group_if && group_if->current_ssid &&
3122                     group_if->current_ssid->mode == WPAS_MODE_P2P_GO) {
3123                         os_get_reltime(&wpa_s->global->p2p_go_wait_client);
3124 #ifdef CONFIG_TESTING_OPTIONS
3125                         if (group_if->p2p_go_csa_on_inv) {
3126                                 wpa_printf(MSG_DEBUG,
3127                                            "Testing: force P2P GO CSA after invitation");
3128                                 eloop_cancel_timeout(
3129                                         wpas_p2p_reconsider_moving_go,
3130                                         wpa_s, NULL);
3131                                 eloop_register_timeout(
3132                                         0, 50000,
3133                                         wpas_p2p_reconsider_moving_go,
3134                                         wpa_s, NULL);
3135                         }
3136 #endif /* CONFIG_TESTING_OPTIONS */
3137                 }
3138                 return;
3139         }
3140
3141         if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3142                 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
3143                            "invitation exchange to indicate readiness for "
3144                            "re-invocation");
3145         }
3146
3147         if (status != P2P_SC_SUCCESS) {
3148                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
3149                         ssid = wpa_config_get_network(
3150                                 wpa_s->conf, wpa_s->pending_invite_ssid_id);
3151                         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3152                 }
3153                 wpas_p2p_remove_pending_group_interface(wpa_s);
3154                 return;
3155         }
3156
3157         ssid = wpa_config_get_network(wpa_s->conf,
3158                                       wpa_s->pending_invite_ssid_id);
3159         if (ssid == NULL) {
3160                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
3161                            "data matching with invitation");
3162                 return;
3163         }
3164
3165         /*
3166          * The peer could have missed our ctrl::ack frame for Invitation
3167          * Response and continue retransmitting the frame. To reduce the
3168          * likelihood of the peer not getting successful TX status for the
3169          * Invitation Response frame, wait a short time here before starting
3170          * the persistent group so that we will remain on the current channel to
3171          * acknowledge any possible retransmission from the peer.
3172          */
3173         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
3174                 "starting persistent group");
3175         os_sleep(0, 50000);
3176
3177         if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
3178             freq_included(wpa_s, channels, neg_freq))
3179                 freq = neg_freq;
3180         else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
3181                  freq_included(wpa_s, channels, peer_oper_freq))
3182                 freq = peer_oper_freq;
3183         else
3184                 freq = 0;
3185
3186         wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
3187                    freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
3188         wpas_p2p_group_add_persistent(wpa_s, ssid,
3189                                       ssid->mode == WPAS_MODE_P2P_GO,
3190                                       wpa_s->p2p_persistent_go_freq,
3191                                       freq,
3192                                       wpa_s->p2p_go_vht_center_freq2,
3193                                       wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
3194                                       wpa_s->p2p_go_max_oper_chwidth,
3195                                       channels,
3196                                       ssid->mode == WPAS_MODE_P2P_GO ?
3197                                       P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3198                                       0, 1);
3199 }
3200
3201
3202 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
3203                                     unsigned int freq)
3204 {
3205         if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
3206                 return 1;
3207         return freq_range_list_includes(&global->p2p_disallow_freq, freq);
3208 }
3209
3210
3211 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
3212 {
3213         reg->channel[reg->channels] = chan;
3214         reg->channels++;
3215 }
3216
3217
3218 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3219                                      struct p2p_channels *chan,
3220                                      struct p2p_channels *cli_chan)
3221 {
3222         int i, cla = 0;
3223
3224         wpa_s->global->p2p_24ghz_social_channels = 1;
3225
3226         os_memset(cli_chan, 0, sizeof(*cli_chan));
3227
3228         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3229                    "band");
3230
3231         /* Operating class 81 - 2.4 GHz band channels 1..13 */
3232         chan->reg_class[cla].reg_class = 81;
3233         chan->reg_class[cla].channels = 0;
3234         for (i = 0; i < 11; i++) {
3235                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3236                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3237         }
3238         if (chan->reg_class[cla].channels)
3239                 cla++;
3240
3241         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3242                    "band");
3243
3244         /* Operating class 115 - 5 GHz, channels 36-48 */
3245         chan->reg_class[cla].reg_class = 115;
3246         chan->reg_class[cla].channels = 0;
3247         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3248                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3249         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3250                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3251         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3252                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3253         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3254                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3255         if (chan->reg_class[cla].channels)
3256                 cla++;
3257
3258         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3259                    "band");
3260
3261         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3262         chan->reg_class[cla].reg_class = 124;
3263         chan->reg_class[cla].channels = 0;
3264         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3265                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3266         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3267                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3268         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3269                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3270         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3271                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3272         if (chan->reg_class[cla].channels)
3273                 cla++;
3274
3275         chan->reg_classes = cla;
3276         return 0;
3277 }
3278
3279
3280 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
3281                                           u16 num_modes,
3282                                           enum hostapd_hw_mode mode)
3283 {
3284         u16 i;
3285
3286         for (i = 0; i < num_modes; i++) {
3287                 if (modes[i].mode == mode)
3288                         return &modes[i];
3289         }
3290
3291         return NULL;
3292 }
3293
3294
3295 enum chan_allowed {
3296         NOT_ALLOWED, NO_IR, ALLOWED
3297 };
3298
3299 static int has_channel(struct wpa_global *global,
3300                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
3301 {
3302         int i;
3303         unsigned int freq;
3304
3305         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3306                 chan * 5;
3307         if (wpas_p2p_disallowed_freq(global, freq))
3308                 return NOT_ALLOWED;
3309
3310         for (i = 0; i < mode->num_channels; i++) {
3311                 if (mode->channels[i].chan == chan) {
3312                         if (flags)
3313                                 *flags = mode->channels[i].flag;
3314                         if (mode->channels[i].flag &
3315                             (HOSTAPD_CHAN_DISABLED |
3316                              HOSTAPD_CHAN_RADAR))
3317                                 return NOT_ALLOWED;
3318                         if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR)
3319                                 return NO_IR;
3320                         return ALLOWED;
3321                 }
3322         }
3323
3324         return NOT_ALLOWED;
3325 }
3326
3327
3328 struct p2p_oper_class_map {
3329         enum hostapd_hw_mode mode;
3330         u8 op_class;
3331         u8 min_chan;
3332         u8 max_chan;
3333         u8 inc;
3334         enum { BW20, BW40PLUS, BW40MINUS, BW80, BW2160, BW160, BW80P80 } bw;
3335 };
3336
3337 static const struct p2p_oper_class_map op_class[] = {
3338         { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
3339 #if 0 /* Do not enable HT40 on 2 GHz for now */
3340         { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
3341         { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
3342 #endif
3343         { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
3344         { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
3345         { HOSTAPD_MODE_IEEE80211A, 125, 149, 169, 4, BW20 },
3346         { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
3347         { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
3348         { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
3349         { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
3350
3351         /*
3352          * IEEE P802.11ac/D7.0 Table E-4 actually talks about channel center
3353          * frequency index 42, 58, 106, 122, 138, 155 with channel spacing of
3354          * 80 MHz, but currently use the following definition for simplicity
3355          * (these center frequencies are not actual channels, which makes
3356          * has_channel() fail). wpas_p2p_verify_80mhz() should take care of
3357          * removing invalid channels.
3358          */
3359         { HOSTAPD_MODE_IEEE80211A, 128, 36, 161, 4, BW80 },
3360         { HOSTAPD_MODE_IEEE80211A, 130, 36, 161, 4, BW80P80 },
3361         { HOSTAPD_MODE_IEEE80211A, 129, 50, 114, 16, BW160 },
3362         { HOSTAPD_MODE_IEEE80211AD, 180, 1, 4, 1, BW2160 },
3363         { -1, 0, 0, 0, 0, BW20 }
3364 };
3365
3366
3367 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3368                                      struct hostapd_hw_modes *mode,
3369                                      u8 channel)
3370 {
3371         u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3372         unsigned int i;
3373
3374         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3375                 return 0;
3376
3377         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3378                 /*
3379                  * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3380                  * so the center channel is 6 channels away from the start/end.
3381                  */
3382                 if (channel >= center_channels[i] - 6 &&
3383                     channel <= center_channels[i] + 6)
3384                         return center_channels[i];
3385
3386         return 0;
3387 }
3388
3389
3390 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3391                                                struct hostapd_hw_modes *mode,
3392                                                u8 channel, u8 bw)
3393 {
3394         u8 center_chan;
3395         int i, flags;
3396         enum chan_allowed res, ret = ALLOWED;
3397
3398         center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3399         if (!center_chan)
3400                 return NOT_ALLOWED;
3401         if (center_chan >= 58 && center_chan <= 138)
3402                 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3403
3404         /* check all the channels are available */
3405         for (i = 0; i < 4; i++) {
3406                 int adj_chan = center_chan - 6 + i * 4;
3407
3408                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3409                 if (res == NOT_ALLOWED)
3410                         return NOT_ALLOWED;
3411                 if (res == NO_IR)
3412                         ret = NO_IR;
3413
3414                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3415                         return NOT_ALLOWED;
3416                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3417                         return NOT_ALLOWED;
3418                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3419                         return NOT_ALLOWED;
3420                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3421                         return NOT_ALLOWED;
3422         }
3423
3424         return ret;
3425 }
3426
3427
3428 static int wpas_p2p_get_center_160mhz(struct wpa_supplicant *wpa_s,
3429                                      struct hostapd_hw_modes *mode,
3430                                      u8 channel)
3431 {
3432         u8 center_channels[] = { 50, 114 };
3433         unsigned int i;
3434
3435         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3436                 return 0;
3437
3438         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3439                 /*
3440                  * In 160 MHz, the bandwidth "spans" 28 channels (e.g., 36-64),
3441                  * so the center channel is 14 channels away from the start/end.
3442                  */
3443                 if (channel >= center_channels[i] - 14 &&
3444                     channel <= center_channels[i] + 14)
3445                         return center_channels[i];
3446
3447         return 0;
3448 }
3449
3450
3451 static enum chan_allowed wpas_p2p_verify_160mhz(struct wpa_supplicant *wpa_s,
3452                                                struct hostapd_hw_modes *mode,
3453                                                u8 channel, u8 bw)
3454 {
3455         u8 center_chan;
3456         int i, flags;
3457         enum chan_allowed res, ret = ALLOWED;
3458
3459         center_chan = wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3460         if (!center_chan)
3461                 return NOT_ALLOWED;
3462         /* VHT 160 MHz uses DFS channels in most countries. */
3463
3464         /* Check all the channels are available */
3465         for (i = 0; i < 8; i++) {
3466                 int adj_chan = center_chan - 14 + i * 4;
3467
3468                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3469                 if (res == NOT_ALLOWED)
3470                         return NOT_ALLOWED;
3471
3472                 if (res == NO_IR)
3473                         ret = NO_IR;
3474
3475                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_150))
3476                         return NOT_ALLOWED;
3477                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_130))
3478                         return NOT_ALLOWED;
3479                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_110))
3480                         return NOT_ALLOWED;
3481                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_90))
3482                         return NOT_ALLOWED;
3483                 if (i == 4 && !(flags & HOSTAPD_CHAN_VHT_90_70))
3484                         return NOT_ALLOWED;
3485                 if (i == 5 && !(flags & HOSTAPD_CHAN_VHT_110_50))
3486                         return NOT_ALLOWED;
3487                 if (i == 6 && !(flags & HOSTAPD_CHAN_VHT_130_30))
3488                         return NOT_ALLOWED;
3489                 if (i == 7 && !(flags & HOSTAPD_CHAN_VHT_150_10))
3490                         return NOT_ALLOWED;
3491         }
3492
3493         return ret;
3494 }
3495
3496
3497 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3498                                                  struct hostapd_hw_modes *mode,
3499                                                  u8 channel, u8 bw)
3500 {
3501         int flag = 0;
3502         enum chan_allowed res, res2;
3503
3504         res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3505         if (bw == BW40MINUS) {
3506                 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3507                         return NOT_ALLOWED;
3508                 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3509         } else if (bw == BW40PLUS) {
3510                 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3511                         return NOT_ALLOWED;
3512                 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3513         } else if (bw == BW80) {
3514                 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3515         } else if (bw == BW160) {
3516                 res2 = wpas_p2p_verify_160mhz(wpa_s, mode, channel, bw);
3517         }
3518
3519         if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3520                 return NOT_ALLOWED;
3521         if (res == NO_IR || res2 == NO_IR)
3522                 return NO_IR;
3523         return res;
3524 }
3525
3526
3527 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3528                                    struct p2p_channels *chan,
3529                                    struct p2p_channels *cli_chan)
3530 {
3531         struct hostapd_hw_modes *mode;
3532         int cla, op, cli_cla;
3533
3534         if (wpa_s->hw.modes == NULL) {
3535                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3536                            "of all supported channels; assume dualband "
3537                            "support");
3538                 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3539         }
3540
3541         cla = cli_cla = 0;
3542
3543         for (op = 0; op_class[op].op_class; op++) {
3544                 const struct p2p_oper_class_map *o = &op_class[op];
3545                 u8 ch;
3546                 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3547
3548                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3549                 if (mode == NULL)
3550                         continue;
3551                 if (mode->mode == HOSTAPD_MODE_IEEE80211G)
3552                         wpa_s->global->p2p_24ghz_social_channels = 1;
3553                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3554                         enum chan_allowed res;
3555                         res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3556                         if (res == ALLOWED) {
3557                                 if (reg == NULL) {
3558                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3559                                                    o->op_class);
3560                                         reg = &chan->reg_class[cla];
3561                                         cla++;
3562                                         reg->reg_class = o->op_class;
3563                                 }
3564                                 reg->channel[reg->channels] = ch;
3565                                 reg->channels++;
3566                         } else if (res == NO_IR &&
3567                                    wpa_s->conf->p2p_add_cli_chan) {
3568                                 if (cli_reg == NULL) {
3569                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3570                                                    o->op_class);
3571                                         cli_reg = &cli_chan->reg_class[cli_cla];
3572                                         cli_cla++;
3573                                         cli_reg->reg_class = o->op_class;
3574                                 }
3575                                 cli_reg->channel[cli_reg->channels] = ch;
3576                                 cli_reg->channels++;
3577                         }
3578                 }
3579                 if (reg) {
3580                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3581                                     reg->channel, reg->channels);
3582                 }
3583                 if (cli_reg) {
3584                         wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3585                                     cli_reg->channel, cli_reg->channels);
3586                 }
3587         }
3588
3589         chan->reg_classes = cla;
3590         cli_chan->reg_classes = cli_cla;
3591
3592         return 0;
3593 }
3594
3595
3596 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3597                            struct hostapd_hw_modes *mode, u8 channel)
3598 {
3599         int op;
3600         enum chan_allowed ret;
3601
3602         for (op = 0; op_class[op].op_class; op++) {
3603                 const struct p2p_oper_class_map *o = &op_class[op];
3604                 u8 ch;
3605
3606                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3607                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3608                             (o->bw != BW40PLUS && o->bw != BW40MINUS) ||
3609                             ch != channel)
3610                                 continue;
3611                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3612                         if (ret == ALLOWED)
3613                                 return (o->bw == BW40MINUS) ? -1 : 1;
3614                 }
3615         }
3616         return 0;
3617 }
3618
3619
3620 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3621                               struct hostapd_hw_modes *mode, u8 channel)
3622 {
3623         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3624                 return 0;
3625
3626         return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3627 }
3628
3629
3630 int wpas_p2p_get_vht160_center(struct wpa_supplicant *wpa_s,
3631                                struct hostapd_hw_modes *mode, u8 channel)
3632 {
3633         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW160))
3634                 return 0;
3635         return wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3636 }
3637
3638
3639 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3640                         size_t buf_len)
3641 {
3642         struct wpa_supplicant *wpa_s = ctx;
3643
3644         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3645                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3646                         break;
3647         }
3648         if (wpa_s == NULL)
3649                 return -1;
3650
3651         return wpa_drv_get_noa(wpa_s, buf, buf_len);
3652 }
3653
3654
3655 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s,
3656                                               const u8 *ssid, size_t ssid_len)
3657 {
3658         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3659                 struct wpa_ssid *s = wpa_s->current_ssid;
3660                 if (s == NULL)
3661                         continue;
3662                 if (s->mode != WPAS_MODE_P2P_GO &&
3663                     s->mode != WPAS_MODE_AP &&
3664                     s->mode != WPAS_MODE_P2P_GROUP_FORMATION)
3665                         continue;
3666                 if (s->ssid_len != ssid_len ||
3667                     os_memcmp(ssid, s->ssid, ssid_len) != 0)
3668                         continue;
3669                 return wpa_s;
3670         }
3671
3672         return NULL;
3673
3674 }
3675
3676
3677 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s,
3678                                                   const u8 *peer_dev_addr)
3679 {
3680         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3681                 struct wpa_ssid *ssid = wpa_s->current_ssid;
3682                 if (ssid && (ssid->mode != WPAS_MODE_INFRA || !ssid->p2p_group))
3683                         continue;
3684                 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0)
3685                         return wpa_s;
3686         }
3687
3688         return NULL;
3689 }
3690
3691
3692 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3693 {
3694         struct wpa_supplicant *wpa_s = ctx;
3695
3696         return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL;
3697 }
3698
3699
3700 static int wpas_is_concurrent_session_active(void *ctx)
3701 {
3702         struct wpa_supplicant *wpa_s = ctx;
3703         struct wpa_supplicant *ifs;
3704
3705         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3706                 if (ifs == wpa_s)
3707                         continue;
3708                 if (ifs->wpa_state > WPA_ASSOCIATED)
3709                         return 1;
3710         }
3711         return 0;
3712 }
3713
3714
3715 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3716 {
3717         struct wpa_supplicant *wpa_s = ctx;
3718         wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3719 }
3720
3721
3722 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s,
3723                                   const char *conf_p2p_dev)
3724 {
3725         struct wpa_interface iface;
3726         struct wpa_supplicant *p2pdev_wpa_s;
3727         char ifname[100];
3728         char force_name[100];
3729         int ret;
3730
3731         ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3732                           wpa_s->ifname);
3733         if (os_snprintf_error(sizeof(ifname), ret))
3734                 return -1;
3735         force_name[0] = '\0';
3736         wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3737         ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3738                              force_name, wpa_s->pending_interface_addr, NULL);
3739         if (ret < 0) {
3740                 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3741                 return ret;
3742         }
3743         os_strlcpy(wpa_s->pending_interface_name, ifname,
3744                    sizeof(wpa_s->pending_interface_name));
3745
3746         os_memset(&iface, 0, sizeof(iface));
3747         iface.p2p_mgmt = 1;
3748         iface.ifname = wpa_s->pending_interface_name;
3749         iface.driver = wpa_s->driver->name;
3750         iface.driver_param = wpa_s->conf->driver_param;
3751
3752         /*
3753          * If a P2P Device configuration file was given, use it as the interface
3754          * configuration file (instead of using parent's configuration file.
3755          */
3756         if (conf_p2p_dev) {
3757                 iface.confname = conf_p2p_dev;
3758                 iface.ctrl_interface = NULL;
3759         } else {
3760                 iface.confname = wpa_s->confname;
3761                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3762         }
3763
3764         p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
3765         if (!p2pdev_wpa_s) {
3766                 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3767                 return -1;
3768         }
3769
3770         wpa_s->pending_interface_name[0] = '\0';
3771         return 0;
3772 }
3773
3774
3775 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3776                                const u8 *noa, size_t noa_len)
3777 {
3778         struct wpa_supplicant *wpa_s, *intf = ctx;
3779         char hex[100];
3780
3781         for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3782                 if (wpa_s->waiting_presence_resp)
3783                         break;
3784         }
3785         if (!wpa_s) {
3786                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3787                 return;
3788         }
3789         wpa_s->waiting_presence_resp = 0;
3790
3791         wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3792         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3793                 " status=%u noa=%s", MAC2STR(src), status, hex);
3794 }
3795
3796
3797 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid,
3798                                      size_t ssid_len, u8 *go_dev_addr,
3799                                      u8 *ret_ssid, size_t *ret_ssid_len,
3800                                      u8 *intended_iface_addr)
3801 {
3802         struct wpa_supplicant *wpa_s = ctx;
3803         struct wpa_ssid *s;
3804
3805         s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len);
3806         if (s) {
3807                 os_memcpy(ret_ssid, s->ssid, s->ssid_len);
3808                 *ret_ssid_len = s->ssid_len;
3809                 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN);
3810
3811                 if (s->mode != WPAS_MODE_P2P_GO) {
3812                         os_memset(intended_iface_addr, 0, ETH_ALEN);
3813                 } else if (wpas_p2p_create_iface(wpa_s)) {
3814                         if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO))
3815                                 return 0;
3816
3817                         os_memcpy(intended_iface_addr,
3818                                   wpa_s->pending_interface_addr, ETH_ALEN);
3819                 } else {
3820                         os_memcpy(intended_iface_addr, wpa_s->own_addr,
3821                                   ETH_ALEN);
3822                 }
3823                 return 1;
3824         }
3825
3826         return 0;
3827 }
3828
3829
3830 static int wpas_get_go_info(void *ctx, u8 *intended_addr,
3831                             u8 *ssid, size_t *ssid_len, int *group_iface,
3832                             unsigned int *freq)
3833 {
3834         struct wpa_supplicant *wpa_s = ctx;
3835         struct wpa_supplicant *go;
3836         struct wpa_ssid *s;
3837
3838         /*
3839          * group_iface will be set to 1 only if a dedicated interface for P2P
3840          * role is required. First, we try to reuse an active GO. However,
3841          * if it is not present, we will try to reactivate an existing
3842          * persistent group and set group_iface to 1, so the caller will know
3843          * that the pending interface should be used.
3844          */
3845         *group_iface = 0;
3846
3847         if (freq)
3848                 *freq = 0;
3849
3850         go = wpas_p2p_get_go_group(wpa_s);
3851         if (!go) {
3852                 s = wpas_p2p_get_persistent_go(wpa_s);
3853                 *group_iface = wpas_p2p_create_iface(wpa_s);
3854                 if (s)
3855                         os_memcpy(intended_addr, s->bssid, ETH_ALEN);
3856                 else
3857                         return 0;
3858         } else {
3859                 s = go->current_ssid;
3860                 os_memcpy(intended_addr, go->own_addr, ETH_ALEN);
3861                 if (freq)
3862                         *freq = go->assoc_freq;
3863         }
3864
3865         os_memcpy(ssid, s->ssid, s->ssid_len);
3866         *ssid_len = s->ssid_len;
3867
3868         return 1;
3869 }
3870
3871
3872 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go,
3873                                     const u8 *ssid, size_t ssid_len)
3874 {
3875         struct wpa_supplicant *wpa_s = ctx;
3876         struct wpa_ssid *s;
3877         int save_config = 0;
3878         size_t i;
3879
3880         /* Start with our first choice of Persistent Groups */
3881         while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) {
3882                 if (go && ssid && ssid_len &&
3883                     s->ssid_len == ssid_len &&
3884                     os_memcmp(go, s->bssid, ETH_ALEN) == 0 &&
3885                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3886                         break;
3887
3888                 /* Remove stale persistent group */
3889                 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) {
3890                         wpa_config_remove_network(wpa_s->conf, s->id);
3891                         save_config = 1;
3892                         continue;
3893                 }
3894
3895                 for (i = 0; i < s->num_p2p_clients; i++) {
3896                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
3897                                       peer, ETH_ALEN) != 0)
3898                                 continue;
3899
3900                         os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
3901                                    s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3902                                    (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3903                         break;
3904                 }
3905                 s->num_p2p_clients--;
3906                 save_config = 1;
3907         }
3908
3909         if (save_config)
3910                 p2p_config_write(wpa_s);
3911
3912         /* Return TRUE if valid SSID remains */
3913         return s != NULL;
3914 }
3915
3916
3917 static void wpas_p2ps_get_feat_cap_str(char *buf, size_t buf_len,
3918                                        const u8 *feat_cap, size_t feat_cap_len)
3919 {
3920         static const char pref[] = " feature_cap=";
3921         int ret;
3922
3923         buf[0] = '\0';
3924
3925         /*
3926          * We expect a feature capability to contain at least one byte to be
3927          * reported. The string buffer provided by the caller function is
3928          * expected to be big enough to contain all bytes of the attribute for
3929          * known specifications. This function truncates the reported bytes if
3930          * the feature capability data exceeds the string buffer size.
3931          */
3932         if (!feat_cap || !feat_cap_len || buf_len < sizeof(pref) + 2)
3933                 return;
3934
3935         os_memcpy(buf, pref, sizeof(pref));
3936         ret = wpa_snprintf_hex(&buf[sizeof(pref) - 1],
3937                                buf_len - sizeof(pref) + 1,
3938                                feat_cap, feat_cap_len);
3939
3940         if (ret != (2 * (int) feat_cap_len))
3941                 wpa_printf(MSG_WARNING, "P2PS feature_cap bytes truncated");
3942 }
3943
3944
3945 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev,
3946                                     const u8 *adv_mac, const u8 *ses_mac,
3947                                     const u8 *grp_mac, u32 adv_id, u32 ses_id,
3948                                     u8 conncap, int passwd_id,
3949                                     const u8 *persist_ssid,
3950                                     size_t persist_ssid_size, int response_done,
3951                                     int prov_start, const char *session_info,
3952                                     const u8 *feat_cap, size_t feat_cap_len,
3953                                     unsigned int freq)
3954 {
3955         struct wpa_supplicant *wpa_s = ctx;
3956         u8 mac[ETH_ALEN];
3957         struct wpa_ssid *persistent_go, *stale, *s = NULL;
3958         int save_config = 0;
3959         struct wpa_supplicant *go_wpa_s;
3960         char feat_cap_str[256];
3961
3962         if (!dev)
3963                 return;
3964
3965         os_memset(mac, 0, ETH_ALEN);
3966         if (!adv_mac)
3967                 adv_mac = mac;
3968         if (!ses_mac)
3969                 ses_mac = mac;
3970         if (!grp_mac)
3971                 grp_mac = mac;
3972
3973         wpas_p2ps_get_feat_cap_str(feat_cap_str, sizeof(feat_cap_str),
3974                                    feat_cap, feat_cap_len);
3975
3976         if (prov_start) {
3977                 if (session_info == NULL) {
3978                         wpa_msg_global(wpa_s, MSG_INFO,
3979                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3980                                        " adv_id=%x conncap=%x"
3981                                        " adv_mac=" MACSTR
3982                                        " session=%x mac=" MACSTR
3983                                        " dev_passwd_id=%d%s",
3984                                        MAC2STR(dev), adv_id, conncap,
3985                                        MAC2STR(adv_mac),
3986                                        ses_id, MAC2STR(ses_mac),
3987                                        passwd_id, feat_cap_str);
3988                 } else {
3989                         wpa_msg_global(wpa_s, MSG_INFO,
3990                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3991                                        " adv_id=%x conncap=%x"
3992                                        " adv_mac=" MACSTR
3993                                        " session=%x mac=" MACSTR
3994                                        " dev_passwd_id=%d info='%s'%s",
3995                                        MAC2STR(dev), adv_id, conncap,
3996                                        MAC2STR(adv_mac),
3997                                        ses_id, MAC2STR(ses_mac),
3998                                        passwd_id, session_info, feat_cap_str);
3999                 }
4000                 return;
4001         }
4002
4003         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
4004         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4005
4006         if (status && status != P2P_SC_SUCCESS_DEFERRED) {
4007                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4008                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4009
4010                 if (persistent_go && !persistent_go->num_p2p_clients) {
4011                         /* remove empty persistent GO */
4012                         wpa_config_remove_network(wpa_s->conf,
4013                                                   persistent_go->id);
4014                 }
4015
4016                 wpa_msg_global(wpa_s, MSG_INFO,
4017                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4018                                " status=%d"
4019                                " adv_id=%x adv_mac=" MACSTR
4020                                " session=%x mac=" MACSTR "%s",
4021                                MAC2STR(dev), status,
4022                                adv_id, MAC2STR(adv_mac),
4023                                ses_id, MAC2STR(ses_mac), feat_cap_str);
4024                 return;
4025         }
4026
4027         /* Clean up stale persistent groups with this device */
4028         if (persist_ssid && persist_ssid_size)
4029                 s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid,
4030                                             persist_ssid_size);
4031
4032         if (persist_ssid && s && s->mode != WPAS_MODE_P2P_GO &&
4033             is_zero_ether_addr(grp_mac)) {
4034                 wpa_dbg(wpa_s, MSG_ERROR,
4035                         "P2P: Peer device is a GO in a persistent group, but it did not provide the intended MAC address");
4036                 return;
4037         }
4038
4039         for (;;) {
4040                 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0);
4041                 if (!stale)
4042                         break;
4043
4044                 if (s && s->ssid_len == stale->ssid_len &&
4045                     os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 &&
4046                     os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0)
4047                         break;
4048
4049                 /* Remove stale persistent group */
4050                 if (stale->mode != WPAS_MODE_P2P_GO ||
4051                     stale->num_p2p_clients <= 1) {
4052                         wpa_config_remove_network(wpa_s->conf, stale->id);
4053                 } else {
4054                         size_t i;
4055
4056                         for (i = 0; i < stale->num_p2p_clients; i++) {
4057                                 if (os_memcmp(stale->p2p_client_list +
4058                                               i * ETH_ALEN,
4059                                               dev, ETH_ALEN) == 0) {
4060                                         os_memmove(stale->p2p_client_list +
4061                                                    i * ETH_ALEN,
4062                                                    stale->p2p_client_list +
4063                                                    (i + 1) * ETH_ALEN,
4064                                                    (stale->num_p2p_clients -
4065                                                     i - 1) * ETH_ALEN);
4066                                         break;
4067                                 }
4068                         }
4069                         stale->num_p2p_clients--;
4070                 }
4071                 save_config = 1;
4072         }
4073
4074         if (save_config)
4075                 p2p_config_write(wpa_s);
4076
4077         if (s) {
4078                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4079                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4080
4081                 if (persistent_go && s != persistent_go &&
4082                     !persistent_go->num_p2p_clients) {
4083                         /* remove empty persistent GO */
4084                         wpa_config_remove_network(wpa_s->conf,
4085                                                   persistent_go->id);
4086                         /* Save config */
4087                 }
4088
4089                 wpa_msg_global(wpa_s, MSG_INFO,
4090                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4091                                " status=%d"
4092                                " adv_id=%x adv_mac=" MACSTR
4093                                " session=%x mac=" MACSTR
4094                                " persist=%d%s",
4095                                MAC2STR(dev), status,
4096                                adv_id, MAC2STR(adv_mac),
4097                                ses_id, MAC2STR(ses_mac), s->id, feat_cap_str);
4098                 return;
4099         }
4100
4101         if (conncap == P2PS_SETUP_GROUP_OWNER) {
4102                 /*
4103                  * We need to copy the interface name. Simply saving a
4104                  * pointer isn't enough, since if we use pending_interface_name
4105                  * it will be overwritten when the group is added.
4106                  */
4107                 char go_ifname[100];
4108
4109                 go_ifname[0] = '\0';
4110                 if (!go_wpa_s) {
4111                         wpa_s->global->pending_p2ps_group = 1;
4112                         wpa_s->global->pending_p2ps_group_freq = freq;
4113
4114                         if (!wpas_p2p_create_iface(wpa_s))
4115                                 os_memcpy(go_ifname, wpa_s->ifname,
4116                                           sizeof(go_ifname));
4117                         else if (wpa_s->pending_interface_name[0])
4118                                 os_memcpy(go_ifname,
4119                                           wpa_s->pending_interface_name,
4120                                           sizeof(go_ifname));
4121
4122                         if (!go_ifname[0]) {
4123                                 wpas_p2ps_prov_complete(
4124                                         wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP,
4125                                         dev, adv_mac, ses_mac,
4126                                         grp_mac, adv_id, ses_id, 0, 0,
4127                                         NULL, 0, 0, 0, NULL, NULL, 0, 0);
4128                                 return;
4129                         }
4130
4131                         /* If PD Resp complete, start up the GO */
4132                         if (response_done && persistent_go) {
4133                                 wpas_p2p_group_add_persistent(
4134                                         wpa_s, persistent_go,
4135                                         0, 0, freq, 0, 0, 0, 0, NULL,
4136                                         persistent_go->mode ==
4137                                         WPAS_MODE_P2P_GO ?
4138                                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
4139                                         0, 0);
4140                         } else if (response_done) {
4141                                 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0);
4142                         }
4143
4144                         if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4145                                 os_memcpy(wpa_s->p2ps_join_addr, grp_mac,
4146                                           ETH_ALEN);
4147                                 wpa_s->p2ps_method_config_any = 1;
4148                         }
4149                 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4150                         os_memcpy(go_ifname, go_wpa_s->ifname,
4151                                   sizeof(go_ifname));
4152
4153                         if (is_zero_ether_addr(grp_mac)) {
4154                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
4155                                         "P2P: Setting PIN-1 for ANY");
4156                                 wpa_supplicant_ap_wps_pin(go_wpa_s, NULL,
4157                                                           "12345670", NULL, 0,
4158                                                           0);
4159                         } else {
4160                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
4161                                         "P2P: Setting PIN-1 for " MACSTR,
4162                                         MAC2STR(grp_mac));
4163                                 wpa_supplicant_ap_wps_pin(go_wpa_s, grp_mac,
4164                                                           "12345670", NULL, 0,
4165                                                           0);
4166                         }
4167
4168                         os_memcpy(wpa_s->p2ps_join_addr, grp_mac, ETH_ALEN);
4169                         wpa_s->p2ps_method_config_any = 1;
4170                 }
4171
4172                 wpa_msg_global(wpa_s, MSG_INFO,
4173                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4174                                " status=%d conncap=%x"
4175                                " adv_id=%x adv_mac=" MACSTR
4176                                " session=%x mac=" MACSTR
4177                                " dev_passwd_id=%d go=%s%s",
4178                                MAC2STR(dev), status, conncap,
4179                                adv_id, MAC2STR(adv_mac),
4180                                ses_id, MAC2STR(ses_mac),
4181                                passwd_id, go_ifname, feat_cap_str);
4182                 return;
4183         }
4184
4185         if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4186                 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4187
4188         if (persistent_go && !persistent_go->num_p2p_clients) {
4189                 /* remove empty persistent GO */
4190                 wpa_config_remove_network(wpa_s->conf, persistent_go->id);
4191         }
4192
4193         if (conncap == P2PS_SETUP_CLIENT) {
4194                 wpa_msg_global(wpa_s, MSG_INFO,
4195                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4196                                " status=%d conncap=%x"
4197                                " adv_id=%x adv_mac=" MACSTR
4198                                " session=%x mac=" MACSTR
4199                                " dev_passwd_id=%d join=" MACSTR "%s",
4200                                MAC2STR(dev), status, conncap,
4201                                adv_id, MAC2STR(adv_mac),
4202                                ses_id, MAC2STR(ses_mac),
4203                                passwd_id, MAC2STR(grp_mac), feat_cap_str);
4204         } else {
4205                 wpa_msg_global(wpa_s, MSG_INFO,
4206                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4207                                " status=%d conncap=%x"
4208                                " adv_id=%x adv_mac=" MACSTR
4209                                " session=%x mac=" MACSTR
4210                                " dev_passwd_id=%d%s",
4211                                MAC2STR(dev), status, conncap,
4212                                adv_id, MAC2STR(adv_mac),
4213                                ses_id, MAC2STR(ses_mac),
4214                                passwd_id, feat_cap_str);
4215         }
4216 }
4217
4218
4219 static int _wpas_p2p_in_progress(void *ctx)
4220 {
4221         struct wpa_supplicant *wpa_s = ctx;
4222         return wpas_p2p_in_progress(wpa_s);
4223 }
4224
4225
4226 static int wpas_prov_disc_resp_cb(void *ctx)
4227 {
4228         struct wpa_supplicant *wpa_s = ctx;
4229         struct wpa_ssid *persistent_go;
4230         unsigned int freq;
4231
4232         if (!wpa_s->global->pending_p2ps_group)
4233                 return 0;
4234
4235         freq = wpa_s->global->pending_p2ps_group_freq;
4236         wpa_s->global->pending_p2ps_group_freq = 0;
4237         wpa_s->global->pending_p2ps_group = 0;
4238
4239         if (wpas_p2p_get_go_group(wpa_s))
4240                 return 0;
4241         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4242
4243         if (persistent_go) {
4244                 wpas_p2p_group_add_persistent(
4245                         wpa_s, persistent_go, 0, 0, 0, 0, 0, 0, 0, NULL,
4246                         persistent_go->mode == WPAS_MODE_P2P_GO ?
4247                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 0);
4248         } else {
4249                 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0);
4250         }
4251
4252         return 1;
4253 }
4254
4255
4256 static int wpas_p2p_get_pref_freq_list(void *ctx, int go,
4257                                        unsigned int *len,
4258                                        unsigned int *freq_list)
4259 {
4260         struct wpa_supplicant *wpa_s = ctx;
4261
4262         return wpa_drv_get_pref_freq_list(wpa_s, go ? WPA_IF_P2P_GO :
4263                                           WPA_IF_P2P_CLIENT, len, freq_list);
4264 }
4265
4266
4267 /**
4268  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
4269  * @global: Pointer to global data from wpa_supplicant_init()
4270  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4271  * Returns: 0 on success, -1 on failure
4272  */
4273 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
4274 {
4275         struct p2p_config p2p;
4276         int i;
4277
4278         if (wpa_s->conf->p2p_disabled)
4279                 return 0;
4280
4281         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
4282                 return 0;
4283
4284         if (global->p2p)
4285                 return 0;
4286
4287         os_memset(&p2p, 0, sizeof(p2p));
4288         p2p.cb_ctx = wpa_s;
4289         p2p.debug_print = wpas_p2p_debug_print;
4290         p2p.p2p_scan = wpas_p2p_scan;
4291         p2p.send_action = wpas_send_action;
4292         p2p.send_action_done = wpas_send_action_done;
4293         p2p.go_neg_completed = wpas_go_neg_completed;
4294         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
4295         p2p.dev_found = wpas_dev_found;
4296         p2p.dev_lost = wpas_dev_lost;
4297         p2p.find_stopped = wpas_find_stopped;
4298         p2p.start_listen = wpas_start_listen;
4299         p2p.stop_listen = wpas_stop_listen;
4300         p2p.send_probe_resp = wpas_send_probe_resp;
4301         p2p.sd_request = wpas_sd_request;
4302         p2p.sd_response = wpas_sd_response;
4303         p2p.prov_disc_req = wpas_prov_disc_req;
4304         p2p.prov_disc_resp = wpas_prov_disc_resp;
4305         p2p.prov_disc_fail = wpas_prov_disc_fail;
4306         p2p.invitation_process = wpas_invitation_process;
4307         p2p.invitation_received = wpas_invitation_received;
4308         p2p.invitation_result = wpas_invitation_result;
4309         p2p.get_noa = wpas_get_noa;
4310         p2p.go_connected = wpas_go_connected;
4311         p2p.presence_resp = wpas_presence_resp;
4312         p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
4313         p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
4314         p2p.get_persistent_group = wpas_get_persistent_group;
4315         p2p.get_go_info = wpas_get_go_info;
4316         p2p.remove_stale_groups = wpas_remove_stale_groups;
4317         p2p.p2ps_prov_complete = wpas_p2ps_prov_complete;
4318         p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb;
4319         p2p.p2ps_group_capability = p2ps_group_capability;
4320         p2p.get_pref_freq_list = wpas_p2p_get_pref_freq_list;
4321
4322         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
4323         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
4324         p2p.dev_name = wpa_s->conf->device_name;
4325         p2p.manufacturer = wpa_s->conf->manufacturer;
4326         p2p.model_name = wpa_s->conf->model_name;
4327         p2p.model_number = wpa_s->conf->model_number;
4328         p2p.serial_number = wpa_s->conf->serial_number;
4329         if (wpa_s->wps) {
4330                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
4331                 p2p.config_methods = wpa_s->wps->config_methods;
4332         }
4333
4334         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
4335                 wpa_printf(MSG_ERROR,
4336                            "P2P: Failed to configure supported channel list");
4337                 return -1;
4338         }
4339
4340         if (wpa_s->conf->p2p_listen_reg_class &&
4341             wpa_s->conf->p2p_listen_channel) {
4342                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
4343                 p2p.channel = wpa_s->conf->p2p_listen_channel;
4344                 p2p.channel_forced = 1;
4345         } else {
4346                 /*
4347                  * Pick one of the social channels randomly as the listen
4348                  * channel.
4349                  */
4350                 if (p2p_config_get_random_social(&p2p, &p2p.reg_class,
4351                                                  &p2p.channel) != 0) {
4352                         wpa_printf(MSG_INFO,
4353                                    "P2P: No social channels supported by the driver - do not enable P2P");
4354                         return 0;
4355                 }
4356                 p2p.channel_forced = 0;
4357         }
4358         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d",
4359                    p2p.reg_class, p2p.channel);
4360
4361         if (wpa_s->conf->p2p_oper_reg_class &&
4362             wpa_s->conf->p2p_oper_channel) {
4363                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4364                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
4365                 p2p.cfg_op_channel = 1;
4366                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
4367                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4368
4369         } else {
4370                 /*
4371                  * Use random operation channel from 2.4 GHz band social
4372                  * channels (1, 6, 11) or band 60 GHz social channel (2) if no
4373                  * other preference is indicated.
4374                  */
4375                 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class,
4376                                                  &p2p.op_channel) != 0) {
4377                         wpa_printf(MSG_ERROR,
4378                                    "P2P: Failed to select random social channel as operation channel");
4379                         return -1;
4380                 }
4381                 p2p.cfg_op_channel = 0;
4382                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
4383                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4384         }
4385
4386         if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
4387                 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
4388                 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
4389         }
4390
4391         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4392                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
4393                 p2p.country[2] = 0x04;
4394         } else
4395                 os_memcpy(p2p.country, "XX\x04", 3);
4396
4397         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
4398                   WPS_DEV_TYPE_LEN);
4399
4400         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
4401         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
4402                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
4403
4404         p2p.concurrent_operations = !!(wpa_s->drv_flags &
4405                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
4406
4407         p2p.max_peers = 100;
4408
4409         if (wpa_s->conf->p2p_ssid_postfix) {
4410                 p2p.ssid_postfix_len =
4411                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
4412                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
4413                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
4414                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
4415                           p2p.ssid_postfix_len);
4416         }
4417
4418         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
4419
4420         p2p.max_listen = wpa_s->max_remain_on_chan;
4421
4422         if (wpa_s->conf->p2p_passphrase_len >= 8 &&
4423             wpa_s->conf->p2p_passphrase_len <= 63)
4424                 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len;
4425         else
4426                 p2p.passphrase_len = 8;
4427
4428         global->p2p = p2p_init(&p2p);
4429         if (global->p2p == NULL)
4430                 return -1;
4431         global->p2p_init_wpa_s = wpa_s;
4432
4433         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4434                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4435                         continue;
4436                 p2p_add_wps_vendor_extension(
4437                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
4438         }
4439
4440         p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
4441
4442         return 0;
4443 }
4444
4445
4446 /**
4447  * wpas_p2p_deinit - Deinitialize per-interface P2P data
4448  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4449  *
4450  * This function deinitialize per-interface P2P data.
4451  */
4452 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
4453 {
4454         if (wpa_s->driver && wpa_s->drv_priv)
4455                 wpa_drv_probe_req_report(wpa_s, 0);
4456
4457         if (wpa_s->go_params) {
4458                 /* Clear any stored provisioning info */
4459                 p2p_clear_provisioning_info(
4460                         wpa_s->global->p2p,
4461                         wpa_s->go_params->peer_device_addr);
4462         }
4463
4464         os_free(wpa_s->go_params);
4465         wpa_s->go_params = NULL;
4466         eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
4467         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4468         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4469         wpa_s->p2p_long_listen = 0;
4470         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4471         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4472         wpas_p2p_remove_pending_group_interface(wpa_s);
4473         eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
4474         wpas_p2p_listen_work_done(wpa_s);
4475         if (wpa_s->p2p_send_action_work) {
4476                 os_free(wpa_s->p2p_send_action_work->ctx);
4477                 radio_work_done(wpa_s->p2p_send_action_work);
4478                 wpa_s->p2p_send_action_work = NULL;
4479         }
4480         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
4481
4482         wpabuf_free(wpa_s->p2p_oob_dev_pw);
4483         wpa_s->p2p_oob_dev_pw = NULL;
4484
4485         os_free(wpa_s->p2p_group_common_freqs);
4486         wpa_s->p2p_group_common_freqs = NULL;
4487         wpa_s->p2p_group_common_freqs_num = 0;
4488
4489         /* TODO: remove group interface from the driver if this wpa_s instance
4490          * is on top of a P2P group interface */
4491 }
4492
4493
4494 /**
4495  * wpas_p2p_deinit_global - Deinitialize global P2P module
4496  * @global: Pointer to global data from wpa_supplicant_init()
4497  *
4498  * This function deinitializes the global (per device) P2P module.
4499  */
4500 static void wpas_p2p_deinit_global(struct wpa_global *global)
4501 {
4502         struct wpa_supplicant *wpa_s, *tmp;
4503
4504         wpa_s = global->ifaces;
4505
4506         wpas_p2p_service_flush(global->p2p_init_wpa_s);
4507
4508         /* Remove remaining P2P group interfaces */
4509         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
4510                 wpa_s = wpa_s->next;
4511         while (wpa_s) {
4512                 tmp = global->ifaces;
4513                 while (tmp &&
4514                        (tmp == wpa_s ||
4515                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
4516                         tmp = tmp->next;
4517                 }
4518                 if (tmp == NULL)
4519                         break;
4520                 /* Disconnect from the P2P group and deinit the interface */
4521                 wpas_p2p_disconnect(tmp);
4522         }
4523
4524         /*
4525          * Deinit GO data on any possibly remaining interface (if main
4526          * interface is used as GO).
4527          */
4528         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4529                 if (wpa_s->ap_iface)
4530                         wpas_p2p_group_deinit(wpa_s);
4531         }
4532
4533         p2p_deinit(global->p2p);
4534         global->p2p = NULL;
4535         global->p2p_init_wpa_s = NULL;
4536 }
4537
4538
4539 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4540 {
4541         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
4542             wpa_s->conf->p2p_no_group_iface)
4543                 return 0; /* separate interface disabled per configuration */
4544         if (wpa_s->drv_flags &
4545             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4546              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4547                 return 1; /* P2P group requires a new interface in every case
4548                            */
4549         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4550                 return 0; /* driver does not support concurrent operations */
4551         if (wpa_s->global->ifaces->next)
4552                 return 1; /* more that one interface already in use */
4553         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4554                 return 1; /* this interface is already in use */
4555         return 0;
4556 }
4557
4558
4559 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4560                                  const u8 *peer_addr,
4561                                  enum p2p_wps_method wps_method,
4562                                  int go_intent, const u8 *own_interface_addr,
4563                                  unsigned int force_freq, int persistent_group,
4564                                  struct wpa_ssid *ssid, unsigned int pref_freq)
4565 {
4566         if (persistent_group && wpa_s->conf->persistent_reconnect)
4567                 persistent_group = 2;
4568
4569         /*
4570          * Increase GO config timeout if HT40 is used since it takes some time
4571          * to scan channels for coex purposes before the BSS can be started.
4572          */
4573         p2p_set_config_timeout(wpa_s->global->p2p,
4574                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4575
4576         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4577                            go_intent, own_interface_addr, force_freq,
4578                            persistent_group, ssid ? ssid->ssid : NULL,
4579                            ssid ? ssid->ssid_len : 0,
4580                            wpa_s->p2p_pd_before_go_neg, pref_freq,
4581                            wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4582                            0);
4583 }
4584
4585
4586 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4587                                 const u8 *peer_addr,
4588                                 enum p2p_wps_method wps_method,
4589                                 int go_intent, const u8 *own_interface_addr,
4590                                 unsigned int force_freq, int persistent_group,
4591                                 struct wpa_ssid *ssid, unsigned int pref_freq)
4592 {
4593         if (persistent_group && wpa_s->conf->persistent_reconnect)
4594                 persistent_group = 2;
4595
4596         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4597                              go_intent, own_interface_addr, force_freq,
4598                              persistent_group, ssid ? ssid->ssid : NULL,
4599                              ssid ? ssid->ssid_len : 0, pref_freq,
4600                              wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4601                              0);
4602 }
4603
4604
4605 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4606 {
4607         wpa_s->p2p_join_scan_count++;
4608         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4609                    wpa_s->p2p_join_scan_count);
4610         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4611                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4612                            " for join operationg - stop join attempt",
4613                            MAC2STR(wpa_s->pending_join_iface_addr));
4614                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4615                 if (wpa_s->p2p_auto_pd) {
4616                         wpa_s->p2p_auto_pd = 0;
4617                         wpa_msg_global(wpa_s, MSG_INFO,
4618                                        P2P_EVENT_PROV_DISC_FAILURE
4619                                        " p2p_dev_addr=" MACSTR " status=N/A",
4620                                        MAC2STR(wpa_s->pending_join_dev_addr));
4621                         return;
4622                 }
4623                 wpa_msg_global(wpa_s->parent, MSG_INFO,
4624                                P2P_EVENT_GROUP_FORMATION_FAILURE);
4625                 wpas_notify_p2p_group_formation_failure(wpa_s, "");
4626         }
4627 }
4628
4629
4630 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4631 {
4632         int res;
4633         unsigned int num, i;
4634         struct wpa_used_freq_data *freqs;
4635
4636         if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4637                 /* Multiple channels are supported and not all are in use */
4638                 return 0;
4639         }
4640
4641         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4642                           sizeof(struct wpa_used_freq_data));
4643         if (!freqs)
4644                 return 1;
4645
4646         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4647                                         wpa_s->num_multichan_concurrent);
4648
4649         for (i = 0; i < num; i++) {
4650                 if (freqs[i].freq == freq) {
4651                         wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4652                                    freq);
4653                         res = 0;
4654                         goto exit_free;
4655                 }
4656         }
4657
4658         wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
4659         res = 1;
4660
4661 exit_free:
4662         os_free(freqs);
4663         return res;
4664 }
4665
4666
4667 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4668                             const u8 *peer_dev_addr)
4669 {
4670         struct wpa_bss *bss;
4671         int updated;
4672
4673         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4674         if (bss == NULL)
4675                 return -1;
4676         if (bss->last_update_idx < wpa_s->bss_update_idx) {
4677                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4678                            "last scan");
4679                 return 0;
4680         }
4681
4682         updated = os_reltime_before(&wpa_s->p2p_auto_started,
4683                                     &bss->last_update);
4684         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4685                    "%ld.%06ld (%supdated in last scan)",
4686                    bss->last_update.sec, bss->last_update.usec,
4687                    updated ? "": "not ");
4688
4689         return updated;
4690 }
4691
4692
4693 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4694                                    struct wpa_scan_results *scan_res)
4695 {
4696         struct wpa_bss *bss = NULL;
4697         int freq;
4698         u8 iface_addr[ETH_ALEN];
4699
4700         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4701
4702         if (wpa_s->global->p2p_disabled)
4703                 return;
4704
4705         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4706                    scan_res ? (int) scan_res->num : -1,
4707                    wpa_s->p2p_auto_join ? "auto_" : "");
4708
4709         if (scan_res)
4710                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4711
4712         if (wpa_s->p2p_auto_pd) {
4713                 int join = wpas_p2p_peer_go(wpa_s,
4714                                             wpa_s->pending_join_dev_addr);
4715                 if (join == 0 &&
4716                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4717                         wpa_s->auto_pd_scan_retry++;
4718                         bss = wpa_bss_get_bssid_latest(
4719                                 wpa_s, wpa_s->pending_join_dev_addr);
4720                         if (bss) {
4721                                 freq = bss->freq;
4722                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4723                                            "the peer " MACSTR " at %d MHz",
4724                                            wpa_s->auto_pd_scan_retry,
4725                                            MAC2STR(wpa_s->
4726                                                    pending_join_dev_addr),
4727                                            freq);
4728                                 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4729                                 return;
4730                         }
4731                 }
4732
4733                 if (join < 0)
4734                         join = 0;
4735
4736                 wpa_s->p2p_auto_pd = 0;
4737                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4738                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4739                            MAC2STR(wpa_s->pending_join_dev_addr), join);
4740                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4741                                       wpa_s->pending_join_dev_addr, NULL,
4742                                       wpa_s->pending_pd_config_methods, join,
4743                                       0, wpa_s->user_initiated_pd) < 0) {
4744                         wpa_s->p2p_auto_pd = 0;
4745                         wpa_msg_global(wpa_s, MSG_INFO,
4746                                        P2P_EVENT_PROV_DISC_FAILURE
4747                                        " p2p_dev_addr=" MACSTR " status=N/A",
4748                                        MAC2STR(wpa_s->pending_join_dev_addr));
4749                 }
4750                 return;
4751         }
4752
4753         if (wpa_s->p2p_auto_join) {
4754                 int join = wpas_p2p_peer_go(wpa_s,
4755                                             wpa_s->pending_join_dev_addr);
4756                 if (join < 0) {
4757                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4758                                    "running a GO -> use GO Negotiation");
4759                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4760                                        P2P_EVENT_FALLBACK_TO_GO_NEG
4761                                        "reason=peer-not-running-GO");
4762                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4763                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4764                                          wpa_s->p2p_persistent_group, 0, 0, 0,
4765                                          wpa_s->p2p_go_intent,
4766                                          wpa_s->p2p_connect_freq,
4767                                          wpa_s->p2p_go_vht_center_freq2,
4768                                          wpa_s->p2p_persistent_id,
4769                                          wpa_s->p2p_pd_before_go_neg,
4770                                          wpa_s->p2p_go_ht40,
4771                                          wpa_s->p2p_go_vht,
4772                                          wpa_s->p2p_go_max_oper_chwidth);
4773                         return;
4774                 }
4775
4776                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4777                            "try to join the group", join ? "" :
4778                            " in older scan");
4779                 if (!join) {
4780                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4781                                        P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED);
4782                         wpa_s->p2p_fallback_to_go_neg = 1;
4783                 }
4784         }
4785
4786         freq = p2p_get_oper_freq(wpa_s->global->p2p,
4787                                  wpa_s->pending_join_iface_addr);
4788         if (freq < 0 &&
4789             p2p_get_interface_addr(wpa_s->global->p2p,
4790                                    wpa_s->pending_join_dev_addr,
4791                                    iface_addr) == 0 &&
4792             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0
4793             && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) {
4794                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4795                            "address for join from " MACSTR " to " MACSTR
4796                            " based on newly discovered P2P peer entry",
4797                            MAC2STR(wpa_s->pending_join_iface_addr),
4798                            MAC2STR(iface_addr));
4799                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4800                           ETH_ALEN);
4801
4802                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4803                                          wpa_s->pending_join_iface_addr);
4804         }
4805         if (freq >= 0) {
4806                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4807                            "from P2P peer table: %d MHz", freq);
4808         }
4809         if (wpa_s->p2p_join_ssid_len) {
4810                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4811                            MACSTR " and SSID %s",
4812                            MAC2STR(wpa_s->pending_join_iface_addr),
4813                            wpa_ssid_txt(wpa_s->p2p_join_ssid,
4814                                         wpa_s->p2p_join_ssid_len));
4815                 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4816                                   wpa_s->p2p_join_ssid,
4817                                   wpa_s->p2p_join_ssid_len);
4818         }
4819         if (!bss) {
4820                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4821                            MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4822                 bss = wpa_bss_get_bssid_latest(wpa_s,
4823                                                wpa_s->pending_join_iface_addr);
4824         }
4825         if (bss) {
4826                 u8 dev_addr[ETH_ALEN];
4827
4828                 freq = bss->freq;
4829                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4830                            "from BSS table: %d MHz (SSID %s)", freq,
4831                            wpa_ssid_txt(bss->ssid, bss->ssid_len));
4832                 if (p2p_parse_dev_addr((const u8 *) (bss + 1), bss->ie_len,
4833                                        dev_addr) == 0 &&
4834                     os_memcmp(wpa_s->pending_join_dev_addr,
4835                               wpa_s->pending_join_iface_addr, ETH_ALEN) == 0 &&
4836                     os_memcmp(dev_addr, wpa_s->pending_join_dev_addr,
4837                               ETH_ALEN) != 0) {
4838                         wpa_printf(MSG_DEBUG,
4839                                    "P2P: Update target GO device address based on BSS entry: " MACSTR " (was " MACSTR ")",
4840                                    MAC2STR(dev_addr),
4841                                    MAC2STR(wpa_s->pending_join_dev_addr));
4842                         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr,
4843                                   ETH_ALEN);
4844                 }
4845         }
4846         if (freq > 0) {
4847                 u16 method;
4848
4849                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4850                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4851                                        P2P_EVENT_GROUP_FORMATION_FAILURE
4852                                        "reason=FREQ_CONFLICT");
4853                         wpas_notify_p2p_group_formation_failure(
4854                                 wpa_s, "FREQ_CONFLICT");
4855                         return;
4856                 }
4857
4858                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4859                            "prior to joining an existing group (GO " MACSTR
4860                            " freq=%u MHz)",
4861                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
4862                 wpa_s->pending_pd_before_join = 1;
4863
4864                 switch (wpa_s->pending_join_wps_method) {
4865                 case WPS_PIN_DISPLAY:
4866                         method = WPS_CONFIG_KEYPAD;
4867                         break;
4868                 case WPS_PIN_KEYPAD:
4869                         method = WPS_CONFIG_DISPLAY;
4870                         break;
4871                 case WPS_PBC:
4872                         method = WPS_CONFIG_PUSHBUTTON;
4873                         break;
4874                 case WPS_P2PS:
4875                         method = WPS_CONFIG_P2PS;
4876                         break;
4877                 default:
4878                         method = 0;
4879                         break;
4880                 }
4881
4882                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4883                                                wpa_s->pending_join_dev_addr) ==
4884                      method)) {
4885                         /*
4886                          * We have already performed provision discovery for
4887                          * joining the group. Proceed directly to join
4888                          * operation without duplicated provision discovery. */
4889                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4890                                    "with " MACSTR " already done - proceed to "
4891                                    "join",
4892                                    MAC2STR(wpa_s->pending_join_dev_addr));
4893                         wpa_s->pending_pd_before_join = 0;
4894                         goto start;
4895                 }
4896
4897                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4898                                       wpa_s->pending_join_dev_addr,
4899                                       NULL, method, 1,
4900                                       freq, wpa_s->user_initiated_pd) < 0) {
4901                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4902                                    "Discovery Request before joining an "
4903                                    "existing group");
4904                         wpa_s->pending_pd_before_join = 0;
4905                         goto start;
4906                 }
4907                 return;
4908         }
4909
4910         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4911         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4912         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4913         wpas_p2p_check_join_scan_limit(wpa_s);
4914         return;
4915
4916 start:
4917         /* Start join operation immediately */
4918         wpas_p2p_join_start(wpa_s, 0, NULL, 0);
4919 }
4920
4921
4922 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4923                                    const u8 *ssid, size_t ssid_len)
4924 {
4925         int ret;
4926         struct wpa_driver_scan_params params;
4927         struct wpabuf *wps_ie, *ies;
4928         size_t ielen;
4929         int freqs[2] = { 0, 0 };
4930
4931         os_memset(&params, 0, sizeof(params));
4932
4933         /* P2P Wildcard SSID */
4934         params.num_ssids = 1;
4935         if (ssid && ssid_len) {
4936                 params.ssids[0].ssid = ssid;
4937                 params.ssids[0].ssid_len = ssid_len;
4938                 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4939                 wpa_s->p2p_join_ssid_len = ssid_len;
4940         } else {
4941                 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4942                 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4943                 wpa_s->p2p_join_ssid_len = 0;
4944         }
4945
4946         wpa_s->wps->dev.p2p = 1;
4947         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4948                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4949                                         NULL);
4950         if (wps_ie == NULL) {
4951                 wpas_p2p_scan_res_join(wpa_s, NULL);
4952                 return;
4953         }
4954
4955         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4956         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4957         if (ies == NULL) {
4958                 wpabuf_free(wps_ie);
4959                 wpas_p2p_scan_res_join(wpa_s, NULL);
4960                 return;
4961         }
4962         wpabuf_put_buf(ies, wps_ie);
4963         wpabuf_free(wps_ie);
4964
4965         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4966
4967         params.p2p_probe = 1;
4968         params.extra_ies = wpabuf_head(ies);
4969         params.extra_ies_len = wpabuf_len(ies);
4970
4971         if (!freq) {
4972                 int oper_freq;
4973                 /*
4974                  * If freq is not provided, check the operating freq of the GO
4975                  * and use a single channel scan on if possible.
4976                  */
4977                 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4978                                               wpa_s->pending_join_iface_addr);
4979                 if (oper_freq > 0)
4980                         freq = oper_freq;
4981         }
4982         if (freq > 0) {
4983                 freqs[0] = freq;
4984                 params.freqs = freqs;
4985         }
4986
4987         /*
4988          * Run a scan to update BSS table and start Provision Discovery once
4989          * the new scan results become available.
4990          */
4991         ret = wpa_drv_scan(wpa_s, &params);
4992         if (!ret) {
4993                 os_get_reltime(&wpa_s->scan_trigger_time);
4994                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
4995                 wpa_s->own_scan_requested = 1;
4996         }
4997
4998         wpabuf_free(ies);
4999
5000         if (ret) {
5001                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
5002                            "try again later");
5003                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5004                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
5005                 wpas_p2p_check_join_scan_limit(wpa_s);
5006         }
5007 }
5008
5009
5010 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
5011 {
5012         struct wpa_supplicant *wpa_s = eloop_ctx;
5013         wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
5014 }
5015
5016
5017 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
5018                          const u8 *dev_addr, enum p2p_wps_method wps_method,
5019                          int auto_join, int op_freq,
5020                          const u8 *ssid, size_t ssid_len)
5021 {
5022         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
5023                    MACSTR " dev " MACSTR " op_freq=%d)%s",
5024                    MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
5025                    auto_join ? " (auto_join)" : "");
5026         if (ssid && ssid_len) {
5027                 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
5028                            wpa_ssid_txt(ssid, ssid_len));
5029         }
5030
5031         wpa_s->p2p_auto_pd = 0;
5032         wpa_s->p2p_auto_join = !!auto_join;
5033         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
5034         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
5035         wpa_s->pending_join_wps_method = wps_method;
5036
5037         /* Make sure we are not running find during connection establishment */
5038         wpas_p2p_stop_find(wpa_s);
5039
5040         wpa_s->p2p_join_scan_count = 0;
5041         wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
5042         return 0;
5043 }
5044
5045
5046 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
5047                                const u8 *ssid, size_t ssid_len)
5048 {
5049         struct wpa_supplicant *group;
5050         struct p2p_go_neg_results res;
5051         struct wpa_bss *bss;
5052
5053         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
5054         if (group == NULL)
5055                 return -1;
5056         if (group != wpa_s) {
5057                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
5058                           sizeof(group->p2p_pin));
5059                 group->p2p_wps_method = wpa_s->p2p_wps_method;
5060         } else {
5061                 /*
5062                  * Need to mark the current interface for p2p_group_formation
5063                  * when a separate group interface is not used. This is needed
5064                  * to allow p2p_cancel stop a pending p2p_connect-join.
5065                  * wpas_p2p_init_group_interface() addresses this for the case
5066                  * where a separate group interface is used.
5067                  */
5068                 wpa_s->global->p2p_group_formation = wpa_s;
5069         }
5070
5071         group->p2p_in_provisioning = 1;
5072         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
5073
5074         os_memset(&res, 0, sizeof(res));
5075         os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
5076         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
5077                   ETH_ALEN);
5078         res.wps_method = wpa_s->pending_join_wps_method;
5079         if (freq && ssid && ssid_len) {
5080                 res.freq = freq;
5081                 res.ssid_len = ssid_len;
5082                 os_memcpy(res.ssid, ssid, ssid_len);
5083         } else {
5084                 bss = wpa_bss_get_bssid_latest(wpa_s,
5085                                                wpa_s->pending_join_iface_addr);
5086                 if (bss) {
5087                         res.freq = bss->freq;
5088                         res.ssid_len = bss->ssid_len;
5089                         os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
5090                         wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
5091                                    bss->freq,
5092                                    wpa_ssid_txt(bss->ssid, bss->ssid_len));
5093                 }
5094         }
5095
5096         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
5097                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
5098                            "starting client");
5099                 wpa_drv_cancel_remain_on_channel(wpa_s);
5100                 wpa_s->off_channel_freq = 0;
5101                 wpa_s->roc_waiting_drv_freq = 0;
5102         }
5103         wpas_start_wps_enrollee(group, &res);
5104
5105         /*
5106          * Allow a longer timeout for join-a-running-group than normal 15
5107          * second group formation timeout since the GO may not have authorized
5108          * our connection yet.
5109          */
5110         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
5111         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
5112                                wpa_s, NULL);
5113
5114         return 0;
5115 }
5116
5117
5118 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
5119                                 int *force_freq, int *pref_freq, int go,
5120                                 unsigned int *pref_freq_list,
5121                                 unsigned int *num_pref_freq)
5122 {
5123         struct wpa_used_freq_data *freqs;
5124         int res, best_freq, num_unused;
5125         unsigned int freq_in_use = 0, num, i, max_pref_freq;
5126
5127         max_pref_freq = *num_pref_freq;
5128         *num_pref_freq = 0;
5129
5130         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5131                           sizeof(struct wpa_used_freq_data));
5132         if (!freqs)
5133                 return -1;
5134
5135         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5136                                         wpa_s->num_multichan_concurrent);
5137
5138         /*
5139          * It is possible that the total number of used frequencies is bigger
5140          * than the number of frequencies used for P2P, so get the system wide
5141          * number of unused frequencies.
5142          */
5143         num_unused = wpas_p2p_num_unused_channels(wpa_s);
5144
5145         wpa_printf(MSG_DEBUG,
5146                    "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
5147                    freq, wpa_s->num_multichan_concurrent, num, num_unused);
5148
5149         if (freq > 0) {
5150                 int ret;
5151                 if (go)
5152                         ret = p2p_supported_freq(wpa_s->global->p2p, freq);
5153                 else
5154                         ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
5155                 if (!ret) {
5156                         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5157                             ieee80211_is_dfs(freq)) {
5158                                 /*
5159                                  * If freq is a DFS channel and DFS is offloaded
5160                                  * to the driver, allow P2P GO to use it.
5161                                  */
5162                                 wpa_printf(MSG_DEBUG,
5163                                            "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver",
5164                                            freq);
5165                         } else {
5166                                 wpa_printf(MSG_DEBUG,
5167                                            "P2P: The forced channel (%u MHz) is not supported for P2P uses",
5168                                            freq);
5169                                 res = -3;
5170                                 goto exit_free;
5171                         }
5172                 }
5173
5174                 for (i = 0; i < num; i++) {
5175                         if (freqs[i].freq == freq)
5176                                 freq_in_use = 1;
5177                 }
5178
5179                 if (num_unused <= 0 && !freq_in_use) {
5180                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
5181                                    freq);
5182                         res = -2;
5183                         goto exit_free;
5184                 }
5185                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
5186                            "requested channel (%u MHz)", freq);
5187                 *force_freq = freq;
5188                 goto exit_ok;
5189         }
5190
5191         best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5192
5193         if (!wpa_s->conf->num_p2p_pref_chan && *pref_freq == 0) {
5194                 enum wpa_driver_if_type iface_type;
5195
5196                 if (go)
5197                         iface_type = WPA_IF_P2P_GO;
5198                 else
5199                         iface_type = WPA_IF_P2P_CLIENT;
5200
5201                 wpa_printf(MSG_DEBUG, "P2P: best_freq=%d, go=%d",
5202                            best_freq, go);
5203
5204                 res = wpa_drv_get_pref_freq_list(wpa_s, iface_type,
5205                                                  &max_pref_freq,
5206                                                  pref_freq_list);
5207                 if (!res && max_pref_freq > 0) {
5208                         *num_pref_freq = max_pref_freq;
5209                         i = 0;
5210                         while (wpas_p2p_disallowed_freq(wpa_s->global,
5211                                                         pref_freq_list[i]) &&
5212                                i < *num_pref_freq) {
5213                                 wpa_printf(MSG_DEBUG,
5214                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
5215                                            i, pref_freq_list[i]);
5216                                 i++;
5217                         }
5218                         if (i != *num_pref_freq) {
5219                                 best_freq = pref_freq_list[i];
5220                                 wpa_printf(MSG_DEBUG,
5221                                            "P2P: Using preferred_freq_list[%d]=%d",
5222                                            i, best_freq);
5223                         } else {
5224                                 wpa_printf(MSG_DEBUG,
5225                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5226                                 *num_pref_freq = 0;
5227                         }
5228                 } else {
5229                         wpa_printf(MSG_DEBUG,
5230                                    "P2P: No preferred frequency list available");
5231                 }
5232         }
5233
5234         /* We have a candidate frequency to use */
5235         if (best_freq > 0) {
5236                 if (*pref_freq == 0 && num_unused > 0) {
5237                         wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
5238                                    best_freq);
5239                         *pref_freq = best_freq;
5240                 } else {
5241                         wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
5242                                    best_freq);
5243                         *force_freq = best_freq;
5244                 }
5245         } else if (num_unused > 0) {
5246                 wpa_printf(MSG_DEBUG,
5247                            "P2P: Current operating channels are not available for P2P. Try to use another channel");
5248                 *force_freq = 0;
5249         } else {
5250                 wpa_printf(MSG_DEBUG,
5251                            "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
5252                 res = -2;
5253                 goto exit_free;
5254         }
5255
5256 exit_ok:
5257         res = 0;
5258 exit_free:
5259         os_free(freqs);
5260         return res;
5261 }
5262
5263
5264 /**
5265  * wpas_p2p_connect - Request P2P Group Formation to be started
5266  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5267  * @peer_addr: Address of the peer P2P Device
5268  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
5269  * @persistent_group: Whether to create a persistent group
5270  * @auto_join: Whether to select join vs. GO Negotiation automatically
5271  * @join: Whether to join an existing group (as a client) instead of starting
5272  *      Group Owner negotiation; @peer_addr is BSSID in that case
5273  * @auth: Whether to only authorize the connection instead of doing that and
5274  *      initiating Group Owner negotiation
5275  * @go_intent: GO Intent or -1 to use default
5276  * @freq: Frequency for the group or 0 for auto-selection
5277  * @freq2: Center frequency of segment 1 for the GO operating in VHT 80P80 mode
5278  * @persistent_id: Persistent group credentials to use for forcing GO
5279  *      parameters or -1 to generate new values (SSID/passphrase)
5280  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
5281  *      interoperability workaround when initiating group formation
5282  * @ht40: Start GO with 40 MHz channel width
5283  * @vht:  Start GO with VHT support
5284  * @vht_chwidth: Channel width supported by GO operating with VHT support
5285  *      (VHT_CHANWIDTH_*).
5286  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
5287  *      failure, -2 on failure due to channel not currently available,
5288  *      -3 if forced channel is not supported
5289  */
5290 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5291                      const char *pin, enum p2p_wps_method wps_method,
5292                      int persistent_group, int auto_join, int join, int auth,
5293                      int go_intent, int freq, unsigned int vht_center_freq2,
5294                      int persistent_id, int pd, int ht40, int vht,
5295                      unsigned int vht_chwidth)
5296 {
5297         int force_freq = 0, pref_freq = 0;
5298         int ret = 0, res;
5299         enum wpa_driver_if_type iftype;
5300         const u8 *if_addr;
5301         struct wpa_ssid *ssid = NULL;
5302         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
5303
5304         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5305                 return -1;
5306
5307         if (persistent_id >= 0) {
5308                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
5309                 if (ssid == NULL || ssid->disabled != 2 ||
5310                     ssid->mode != WPAS_MODE_P2P_GO)
5311                         return -1;
5312         }
5313
5314         os_free(wpa_s->global->add_psk);
5315         wpa_s->global->add_psk = NULL;
5316
5317         wpa_s->global->p2p_fail_on_wps_complete = 0;
5318         wpa_s->global->pending_p2ps_group = 0;
5319         wpa_s->global->pending_p2ps_group_freq = 0;
5320         wpa_s->p2ps_method_config_any = 0;
5321
5322         if (go_intent < 0)
5323                 go_intent = wpa_s->conf->p2p_go_intent;
5324
5325         if (!auth)
5326                 wpa_s->p2p_long_listen = 0;
5327
5328         wpa_s->p2p_wps_method = wps_method;
5329         wpa_s->p2p_persistent_group = !!persistent_group;
5330         wpa_s->p2p_persistent_id = persistent_id;
5331         wpa_s->p2p_go_intent = go_intent;
5332         wpa_s->p2p_connect_freq = freq;
5333         wpa_s->p2p_fallback_to_go_neg = 0;
5334         wpa_s->p2p_pd_before_go_neg = !!pd;
5335         wpa_s->p2p_go_ht40 = !!ht40;
5336         wpa_s->p2p_go_vht = !!vht;
5337         wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
5338         wpa_s->p2p_go_max_oper_chwidth = vht_chwidth;
5339
5340         if (pin)
5341                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
5342         else if (wps_method == WPS_PIN_DISPLAY) {
5343                 ret = wps_generate_pin();
5344                 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin),
5345                                   "%08d", ret);
5346                 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res))
5347                         wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0';
5348                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
5349                            wpa_s->p2p_pin);
5350         } else
5351                 wpa_s->p2p_pin[0] = '\0';
5352
5353         if (join || auto_join) {
5354                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
5355                 if (auth) {
5356                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
5357                                    "connect a running group from " MACSTR,
5358                                    MAC2STR(peer_addr));
5359                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
5360                         return ret;
5361                 }
5362                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
5363                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
5364                                            iface_addr) < 0) {
5365                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
5366                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
5367                                          dev_addr);
5368                 }
5369                 if (auto_join) {
5370                         os_get_reltime(&wpa_s->p2p_auto_started);
5371                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
5372                                    "%ld.%06ld",
5373                                    wpa_s->p2p_auto_started.sec,
5374                                    wpa_s->p2p_auto_started.usec);
5375                 }
5376                 wpa_s->user_initiated_pd = 1;
5377                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
5378                                   auto_join, freq, NULL, 0) < 0)
5379                         return -1;
5380                 return ret;
5381         }
5382
5383         size = P2P_MAX_PREF_CHANNELS;
5384         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5385                                    go_intent == 15, pref_freq_list, &size);
5386         if (res)
5387                 return res;
5388         wpas_p2p_set_own_freq_preference(wpa_s,
5389                                          force_freq ? force_freq : pref_freq);
5390
5391         p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
5392
5393         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
5394
5395         if (wpa_s->create_p2p_iface) {
5396                 /* Prepare to add a new interface for the group */
5397                 iftype = WPA_IF_P2P_GROUP;
5398                 if (go_intent == 15)
5399                         iftype = WPA_IF_P2P_GO;
5400                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
5401                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
5402                                    "interface for the group");
5403                         return -1;
5404                 }
5405
5406                 if_addr = wpa_s->pending_interface_addr;
5407         } else {
5408                 if_addr = wpa_s->own_addr;
5409                 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
5410         }
5411
5412         if (auth) {
5413                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
5414                                          go_intent, if_addr,
5415                                          force_freq, persistent_group, ssid,
5416                                          pref_freq) < 0)
5417                         return -1;
5418                 return ret;
5419         }
5420
5421         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
5422                                   go_intent, if_addr, force_freq,
5423                                   persistent_group, ssid, pref_freq) < 0) {
5424                 if (wpa_s->create_p2p_iface)
5425                         wpas_p2p_remove_pending_group_interface(wpa_s);
5426                 return -1;
5427         }
5428         return ret;
5429 }
5430
5431
5432 /**
5433  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
5434  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5435  * @freq: Frequency of the channel in MHz
5436  * @duration: Duration of the stay on the channel in milliseconds
5437  *
5438  * This callback is called when the driver indicates that it has started the
5439  * requested remain-on-channel duration.
5440  */
5441 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5442                                    unsigned int freq, unsigned int duration)
5443 {
5444         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5445                 return;
5446         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)",
5447                    wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5448                    wpa_s->roc_waiting_drv_freq, freq, duration);
5449         if (wpa_s->off_channel_freq &&
5450             wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
5451                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
5452                               wpa_s->pending_listen_duration);
5453                 wpa_s->pending_listen_freq = 0;
5454         } else {
5455                 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
5456                            wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5457                            freq, duration);
5458         }
5459 }
5460
5461
5462 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout)
5463 {
5464         /* Limit maximum Listen state time based on driver limitation. */
5465         if (timeout > wpa_s->max_remain_on_chan)
5466                 timeout = wpa_s->max_remain_on_chan;
5467
5468         return p2p_listen(wpa_s->global->p2p, timeout);
5469 }
5470
5471
5472 /**
5473  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
5474  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5475  * @freq: Frequency of the channel in MHz
5476  *
5477  * This callback is called when the driver indicates that a remain-on-channel
5478  * operation has been completed, i.e., the duration on the requested channel
5479  * has timed out.
5480  */
5481 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5482                                           unsigned int freq)
5483 {
5484         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
5485                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
5486                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
5487         wpas_p2p_listen_work_done(wpa_s);
5488         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5489                 return;
5490         if (wpa_s->p2p_long_listen > 0)
5491                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
5492         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
5493                 return; /* P2P module started a new operation */
5494         if (offchannel_pending_action_tx(wpa_s))
5495                 return;
5496         if (wpa_s->p2p_long_listen > 0) {
5497                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
5498                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
5499         } else {
5500                 /*
5501                  * When listen duration is over, stop listen & update p2p_state
5502                  * to IDLE.
5503                  */
5504                 p2p_stop_listen(wpa_s->global->p2p);
5505         }
5506 }
5507
5508
5509 /**
5510  * wpas_p2p_group_remove - Remove a P2P group
5511  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5512  * @ifname: Network interface name of the group interface or "*" to remove all
5513  *      groups
5514  * Returns: 0 on success, -1 on failure
5515  *
5516  * This function is used to remove a P2P group. This can be used to disconnect
5517  * from a group in which the local end is a P2P Client or to end a P2P Group in
5518  * case the local end is the Group Owner. If a virtual network interface was
5519  * created for this group, that interface will be removed. Otherwise, only the
5520  * configured P2P group network will be removed from the interface.
5521  */
5522 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
5523 {
5524         struct wpa_global *global = wpa_s->global;
5525         struct wpa_supplicant *calling_wpa_s = wpa_s;
5526
5527         if (os_strcmp(ifname, "*") == 0) {
5528                 struct wpa_supplicant *prev;
5529                 wpa_s = global->ifaces;
5530                 while (wpa_s) {
5531                         prev = wpa_s;
5532                         wpa_s = wpa_s->next;
5533                         if (prev->p2p_group_interface !=
5534                             NOT_P2P_GROUP_INTERFACE ||
5535                             (prev->current_ssid &&
5536                              prev->current_ssid->p2p_group))
5537                                 wpas_p2p_disconnect_safely(prev, calling_wpa_s);
5538                 }
5539                 return 0;
5540         }
5541
5542         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5543                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5544                         break;
5545         }
5546
5547         return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s);
5548 }
5549
5550
5551 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
5552 {
5553         unsigned int r;
5554
5555         if (!wpa_s->conf->num_p2p_pref_chan && !freq) {
5556                 unsigned int i, size = P2P_MAX_PREF_CHANNELS;
5557                 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS];
5558                 int res;
5559
5560                 res = wpa_drv_get_pref_freq_list(wpa_s, WPA_IF_P2P_GO,
5561                                                  &size, pref_freq_list);
5562                 if (!res && size > 0) {
5563                         i = 0;
5564                         while (wpas_p2p_disallowed_freq(wpa_s->global,
5565                                                         pref_freq_list[i]) &&
5566                                i < size) {
5567                                 wpa_printf(MSG_DEBUG,
5568                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
5569                                            i, pref_freq_list[i]);
5570                                 i++;
5571                         }
5572                         if (i != size) {
5573                                 freq = pref_freq_list[i];
5574                                 wpa_printf(MSG_DEBUG,
5575                                            "P2P: Using preferred_freq_list[%d]=%d",
5576                                            i, freq);
5577                         } else {
5578                                 wpa_printf(MSG_DEBUG,
5579                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5580                         }
5581                 } else {
5582                         wpa_printf(MSG_DEBUG,
5583                                    "P2P: No preferred frequency list available");
5584                 }
5585         }
5586
5587         if (freq == 2) {
5588                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
5589                            "band");
5590                 if (wpa_s->best_24_freq > 0 &&
5591                     p2p_supported_freq_go(wpa_s->global->p2p,
5592                                           wpa_s->best_24_freq)) {
5593                         freq = wpa_s->best_24_freq;
5594                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
5595                                    "channel: %d MHz", freq);
5596                 } else {
5597                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5598                                 return -1;
5599                         freq = 2412 + (r % 3) * 25;
5600                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
5601                                    "channel: %d MHz", freq);
5602                 }
5603         }
5604
5605         if (freq == 5) {
5606                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
5607                            "band");
5608                 if (wpa_s->best_5_freq > 0 &&
5609                     p2p_supported_freq_go(wpa_s->global->p2p,
5610                                        wpa_s->best_5_freq)) {
5611                         freq = wpa_s->best_5_freq;
5612                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
5613                                    "channel: %d MHz", freq);
5614                 } else {
5615                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5616                                 return -1;
5617                         freq = 5180 + (r % 4) * 20;
5618                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5619                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
5620                                            "5 GHz channel for P2P group");
5621                                 return -1;
5622                         }
5623                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
5624                                    "channel: %d MHz", freq);
5625                 }
5626         }
5627
5628         if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5629                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5630                     ieee80211_is_dfs(freq)) {
5631                         /*
5632                          * If freq is a DFS channel and DFS is offloaded to the
5633                          * driver, allow P2P GO to use it.
5634                          */
5635                         wpa_printf(MSG_DEBUG, "P2P: "
5636                                    "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded",
5637                                    __func__, freq);
5638                         return freq;
5639                 }
5640                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
5641                            "(%u MHz) is not supported for P2P uses",
5642                            freq);
5643                 return -1;
5644         }
5645
5646         return freq;
5647 }
5648
5649
5650 static int wpas_p2p_supported_freq_go(struct wpa_supplicant *wpa_s,
5651                                       const struct p2p_channels *channels,
5652                                       int freq)
5653 {
5654         if (!wpas_p2p_disallowed_freq(wpa_s->global, freq) &&
5655             p2p_supported_freq_go(wpa_s->global->p2p, freq) &&
5656             freq_included(wpa_s, channels, freq))
5657                 return 1;
5658         return 0;
5659 }
5660
5661
5662 static void wpas_p2p_select_go_freq_no_pref(struct wpa_supplicant *wpa_s,
5663                                             struct p2p_go_neg_results *params,
5664                                             const struct p2p_channels *channels)
5665 {
5666         unsigned int i, r;
5667
5668         /* first try some random selection of the social channels */
5669         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5670                 return;
5671
5672         for (i = 0; i < 3; i++) {
5673                 params->freq = 2412 + ((r + i) % 3) * 25;
5674                 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5675                         goto out;
5676         }
5677
5678         /* try all other channels in operating class 81 */
5679         for (i = 0; i < 11; i++) {
5680                 params->freq = 2412 + i * 5;
5681
5682                 /* skip social channels; covered in the previous loop */
5683                 if (params->freq == 2412 ||
5684                     params->freq == 2437 ||
5685                     params->freq == 2462)
5686                         continue;
5687
5688                 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5689                         goto out;
5690         }
5691
5692         /* try all channels in operating class 115 */
5693         for (i = 0; i < 4; i++) {
5694                 params->freq = 5180 + i * 20;
5695                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5696                     freq_included(wpa_s, channels, params->freq) &&
5697                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5698                         goto out;
5699         }
5700
5701         /* try all channels in operating class 124 */
5702         for (i = 0; i < 4; i++) {
5703                 params->freq = 5745 + i * 20;
5704                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5705                     freq_included(wpa_s, channels, params->freq) &&
5706                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5707                         goto out;
5708         }
5709
5710         /* try social channel class 180 channel 2 */
5711         params->freq = 58320 + 1 * 2160;
5712         if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5713             freq_included(wpa_s, channels, params->freq) &&
5714             p2p_supported_freq(wpa_s->global->p2p, params->freq))
5715                 goto out;
5716
5717         /* try all channels in reg. class 180 */
5718         for (i = 0; i < 4; i++) {
5719                 params->freq = 58320 + i * 2160;
5720                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5721                     freq_included(wpa_s, channels, params->freq) &&
5722                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5723                         goto out;
5724         }
5725
5726         params->freq = 0;
5727         wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed");
5728         return;
5729 out:
5730         wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)",
5731                    params->freq);
5732 }
5733
5734
5735 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
5736                                    struct p2p_go_neg_results *params,
5737                                    int freq, int vht_center_freq2, int ht40,
5738                                    int vht, int max_oper_chwidth,
5739                                    const struct p2p_channels *channels)
5740 {
5741         struct wpa_used_freq_data *freqs;
5742         unsigned int cand;
5743         unsigned int num, i;
5744         int ignore_no_freqs = 0;
5745
5746         os_memset(params, 0, sizeof(*params));
5747         params->role_go = 1;
5748         params->ht40 = ht40;
5749         params->vht = vht;
5750         params->max_oper_chwidth = max_oper_chwidth;
5751         params->vht_center_freq2 = vht_center_freq2;
5752
5753         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5754                           sizeof(struct wpa_used_freq_data));
5755         if (!freqs)
5756                 return -1;
5757
5758         num = get_shared_radio_freqs_data(wpa_s, freqs,
5759                                           wpa_s->num_multichan_concurrent);
5760
5761         if (wpa_s->current_ssid &&
5762             wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO &&
5763             wpa_s->wpa_state == WPA_COMPLETED) {
5764                 wpa_printf(MSG_DEBUG, "P2P: %s called for an active GO",
5765                            __func__);
5766
5767                 /*
5768                  * If the frequency selection is done for an active P2P GO that
5769                  * is not sharing a frequency, allow to select a new frequency
5770                  * even if there are no unused frequencies as we are about to
5771                  * move the P2P GO so its frequency can be re-used.
5772                  */
5773                 for (i = 0; i < num; i++) {
5774                         if (freqs[i].freq == wpa_s->current_ssid->frequency &&
5775                             freqs[i].flags == 0) {
5776                                 ignore_no_freqs = 1;
5777                                 break;
5778                         }
5779                 }
5780         }
5781
5782         /* try using the forced freq */
5783         if (freq) {
5784                 if (!wpas_p2p_supported_freq_go(wpa_s, channels, freq)) {
5785                         wpa_printf(MSG_DEBUG,
5786                                    "P2P: Forced GO freq %d MHz not accepted",
5787                                    freq);
5788                         goto fail;
5789                 }
5790
5791                 for (i = 0; i < num; i++) {
5792                         if (freqs[i].freq == freq) {
5793                                 wpa_printf(MSG_DEBUG,
5794                                            "P2P: forced freq (%d MHz) is also shared",
5795                                            freq);
5796                                 params->freq = freq;
5797                                 goto success;
5798                         }
5799                 }
5800
5801                 if (!ignore_no_freqs &&
5802                     wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5803                         wpa_printf(MSG_DEBUG,
5804                                    "P2P: Cannot force GO on freq (%d MHz) as all the channels are in use",
5805                                    freq);
5806                         goto fail;
5807                 }
5808
5809                 wpa_printf(MSG_DEBUG,
5810                            "P2P: force GO freq (%d MHz) on a free channel",
5811                            freq);
5812                 params->freq = freq;
5813                 goto success;
5814         }
5815
5816         /* consider using one of the shared frequencies */
5817         if (num) {
5818                 cand = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5819                 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5820                         wpa_printf(MSG_DEBUG,
5821                                    "P2P: Use shared freq (%d MHz) for GO",
5822                                    freq);
5823                         params->freq = cand;
5824                         goto success;
5825                 }
5826
5827                 /* try using one of the shared freqs */
5828                 for (i = 0; i < num; i++) {
5829                         if (wpas_p2p_supported_freq_go(wpa_s, channels,
5830                                                        freqs[i].freq)) {
5831                                 wpa_printf(MSG_DEBUG,
5832                                            "P2P: Use shared freq (%d MHz) for GO",
5833                                            freq);
5834                                 params->freq = freqs[i].freq;
5835                                 goto success;
5836                         }
5837                 }
5838         }
5839
5840         if (!ignore_no_freqs &&
5841             wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5842                 wpa_printf(MSG_DEBUG,
5843                            "P2P: Cannot force GO on any of the channels we are already using");
5844                 goto fail;
5845         }
5846
5847         /* try using the setting from the configuration file */
5848         if (wpa_s->conf->p2p_oper_reg_class == 81 &&
5849             wpa_s->conf->p2p_oper_channel >= 1 &&
5850             wpa_s->conf->p2p_oper_channel <= 11 &&
5851             wpas_p2p_supported_freq_go(
5852                     wpa_s, channels,
5853                     2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
5854                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
5855                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5856                            "frequency %d MHz", params->freq);
5857                 goto success;
5858         }
5859
5860         if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
5861              wpa_s->conf->p2p_oper_reg_class == 116 ||
5862              wpa_s->conf->p2p_oper_reg_class == 117 ||
5863              wpa_s->conf->p2p_oper_reg_class == 124 ||
5864              wpa_s->conf->p2p_oper_reg_class == 125 ||
5865              wpa_s->conf->p2p_oper_reg_class == 126 ||
5866              wpa_s->conf->p2p_oper_reg_class == 127) &&
5867             wpas_p2p_supported_freq_go(wpa_s, channels,
5868                                        5000 +
5869                                        5 * wpa_s->conf->p2p_oper_channel)) {
5870                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
5871                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5872                            "frequency %d MHz", params->freq);
5873                 goto success;
5874         }
5875
5876         /* Try using best channels */
5877         if (wpa_s->conf->p2p_oper_channel == 0 &&
5878             wpa_s->best_overall_freq > 0 &&
5879             wpas_p2p_supported_freq_go(wpa_s, channels,
5880                                        wpa_s->best_overall_freq)) {
5881                 params->freq = wpa_s->best_overall_freq;
5882                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
5883                            "channel %d MHz", params->freq);
5884                 goto success;
5885         }
5886
5887         if (wpa_s->conf->p2p_oper_channel == 0 &&
5888             wpa_s->best_24_freq > 0 &&
5889             wpas_p2p_supported_freq_go(wpa_s, channels,
5890                                        wpa_s->best_24_freq)) {
5891                 params->freq = wpa_s->best_24_freq;
5892                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
5893                            "channel %d MHz", params->freq);
5894                 goto success;
5895         }
5896
5897         if (wpa_s->conf->p2p_oper_channel == 0 &&
5898             wpa_s->best_5_freq > 0 &&
5899             wpas_p2p_supported_freq_go(wpa_s, channels,
5900                                        wpa_s->best_5_freq)) {
5901                 params->freq = wpa_s->best_5_freq;
5902                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
5903                            "channel %d MHz", params->freq);
5904                 goto success;
5905         }
5906
5907         /* try using preferred channels */
5908         cand = p2p_get_pref_freq(wpa_s->global->p2p, channels);
5909         if (cand && wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5910                 params->freq = cand;
5911                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
5912                            "channels", params->freq);
5913                 goto success;
5914         }
5915
5916         /* Try using one of the group common freqs */
5917         if (wpa_s->p2p_group_common_freqs) {
5918                 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
5919                         cand = wpa_s->p2p_group_common_freqs[i];
5920                         if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5921                                 params->freq = cand;
5922                                 wpa_printf(MSG_DEBUG,
5923                                            "P2P: Use freq %d MHz common with the peer",
5924                                            params->freq);
5925                                 goto success;
5926                         }
5927                 }
5928         }
5929
5930         /* no preference, select some channel */
5931         wpas_p2p_select_go_freq_no_pref(wpa_s, params, channels);
5932
5933         if (params->freq == 0) {
5934                 wpa_printf(MSG_DEBUG, "P2P: did not find a freq for GO use");
5935                 goto fail;
5936         }
5937
5938 success:
5939         os_free(freqs);
5940         return 0;
5941 fail:
5942         os_free(freqs);
5943         return -1;
5944 }
5945
5946
5947 static struct wpa_supplicant *
5948 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
5949                          int go)
5950 {
5951         struct wpa_supplicant *group_wpa_s;
5952
5953         if (!wpas_p2p_create_iface(wpa_s)) {
5954                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
5955                         "operations");
5956                 wpa_s->p2p_first_connection_timeout = 0;
5957                 return wpa_s;
5958         }
5959
5960         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
5961                                          WPA_IF_P2P_CLIENT) < 0) {
5962                 wpa_msg_global(wpa_s, MSG_ERROR,
5963                                "P2P: Failed to add group interface");
5964                 return NULL;
5965         }
5966         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
5967         if (group_wpa_s == NULL) {
5968                 wpa_msg_global(wpa_s, MSG_ERROR,
5969                                "P2P: Failed to initialize group interface");
5970                 wpas_p2p_remove_pending_group_interface(wpa_s);
5971                 return NULL;
5972         }
5973
5974         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
5975                 group_wpa_s->ifname);
5976         group_wpa_s->p2p_first_connection_timeout = 0;
5977         return group_wpa_s;
5978 }
5979
5980
5981 /**
5982  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
5983  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5984  * @persistent_group: Whether to create a persistent group
5985  * @freq: Frequency for the group or 0 to indicate no hardcoding
5986  * @vht_center_freq2: segment_1 center frequency for GO operating in VHT 80P80
5987  * @ht40: Start GO with 40 MHz channel width
5988  * @vht:  Start GO with VHT support
5989  * @vht_chwidth: channel bandwidth for GO operating with VHT support
5990  * Returns: 0 on success, -1 on failure
5991  *
5992  * This function creates a new P2P group with the local end as the Group Owner,
5993  * i.e., without using Group Owner Negotiation.
5994  */
5995 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
5996                        int freq, int vht_center_freq2, int ht40, int vht,
5997                        int max_oper_chwidth)
5998 {
5999         struct p2p_go_neg_results params;
6000
6001         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6002                 return -1;
6003
6004         os_free(wpa_s->global->add_psk);
6005         wpa_s->global->add_psk = NULL;
6006
6007         /* Make sure we are not running find during connection establishment */
6008         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
6009         wpas_p2p_stop_find_oper(wpa_s);
6010
6011         freq = wpas_p2p_select_go_freq(wpa_s, freq);
6012         if (freq < 0)
6013                 return -1;
6014
6015         if (wpas_p2p_init_go_params(wpa_s, &params, freq, vht_center_freq2,
6016                                     ht40, vht, max_oper_chwidth, NULL))
6017                 return -1;
6018         if (params.freq &&
6019             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
6020                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
6021                     ieee80211_is_dfs(params.freq)) {
6022                         /*
6023                          * If freq is a DFS channel and DFS is offloaded to the
6024                          * driver, allow P2P GO to use it.
6025                          */
6026                         wpa_printf(MSG_DEBUG,
6027                                    "P2P: %s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to driver",
6028                                 __func__, params.freq);
6029                 } else {
6030                         wpa_printf(MSG_DEBUG,
6031                                    "P2P: The selected channel for GO (%u MHz) is not supported for P2P uses",
6032                                    params.freq);
6033                         return -1;
6034                 }
6035         }
6036         p2p_go_params(wpa_s->global->p2p, &params);
6037         params.persistent_group = persistent_group;
6038
6039         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
6040         if (wpa_s == NULL)
6041                 return -1;
6042         wpas_start_wps_go(wpa_s, &params, 0);
6043
6044         return 0;
6045 }
6046
6047
6048 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
6049                                  struct wpa_ssid *params, int addr_allocated,
6050                                  int freq, int force_scan)
6051 {
6052         struct wpa_ssid *ssid;
6053
6054         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
6055         if (wpa_s == NULL)
6056                 return -1;
6057         if (force_scan)
6058                 os_get_reltime(&wpa_s->scan_min_time);
6059         wpa_s->p2p_last_4way_hs_fail = NULL;
6060
6061         wpa_supplicant_ap_deinit(wpa_s);
6062
6063         ssid = wpa_config_add_network(wpa_s->conf);
6064         if (ssid == NULL)
6065                 return -1;
6066         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
6067         wpa_config_set_network_defaults(ssid);
6068         ssid->temporary = 1;
6069         ssid->proto = WPA_PROTO_RSN;
6070         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
6071         ssid->group_cipher = WPA_CIPHER_CCMP;
6072         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
6073         ssid->ssid = os_malloc(params->ssid_len);
6074         if (ssid->ssid == NULL) {
6075                 wpa_config_remove_network(wpa_s->conf, ssid->id);
6076                 return -1;
6077         }
6078         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
6079         ssid->ssid_len = params->ssid_len;
6080         ssid->p2p_group = 1;
6081         ssid->export_keys = 1;
6082         if (params->psk_set) {
6083                 os_memcpy(ssid->psk, params->psk, 32);
6084                 ssid->psk_set = 1;
6085         }
6086         if (params->passphrase)
6087                 ssid->passphrase = os_strdup(params->passphrase);
6088
6089         wpa_s->show_group_started = 1;
6090         wpa_s->p2p_in_invitation = 1;
6091         wpa_s->p2p_invite_go_freq = freq;
6092         wpa_s->p2p_go_group_formation_completed = 0;
6093         wpa_s->global->p2p_group_formation = wpa_s;
6094
6095         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
6096                              NULL);
6097         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6098                                wpas_p2p_group_formation_timeout,
6099                                wpa_s->parent, NULL);
6100         wpa_supplicant_select_network(wpa_s, ssid);
6101
6102         return 0;
6103 }
6104
6105
6106 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
6107                                   struct wpa_ssid *ssid, int addr_allocated,
6108                                   int force_freq, int neg_freq,
6109                                   int vht_center_freq2, int ht40,
6110                                   int vht, int max_oper_chwidth,
6111                                   const struct p2p_channels *channels,
6112                                   int connection_timeout, int force_scan)
6113 {
6114         struct p2p_go_neg_results params;
6115         int go = 0, freq;
6116
6117         if (ssid->disabled != 2 || ssid->ssid == NULL)
6118                 return -1;
6119
6120         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
6121             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
6122                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
6123                            "already running");
6124                 if (go == 0 &&
6125                     eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6126                                          wpa_s->parent, NULL)) {
6127                         /*
6128                          * This can happen if Invitation Response frame was lost
6129                          * and the peer (GO of a persistent group) tries to
6130                          * invite us again. Reschedule the timeout to avoid
6131                          * terminating the wait for the connection too early
6132                          * since we now know that the peer is still trying to
6133                          * invite us instead of having already started the GO.
6134                          */
6135                         wpa_printf(MSG_DEBUG,
6136                                    "P2P: Reschedule group formation timeout since peer is still trying to invite us");
6137                         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6138                                                wpas_p2p_group_formation_timeout,
6139                                                wpa_s->parent, NULL);
6140                 }
6141                 return 0;
6142         }
6143
6144         os_free(wpa_s->global->add_psk);
6145         wpa_s->global->add_psk = NULL;
6146
6147         /* Make sure we are not running find during connection establishment */
6148         wpas_p2p_stop_find_oper(wpa_s);
6149
6150         wpa_s->p2p_fallback_to_go_neg = 0;
6151
6152         if (ssid->mode == WPAS_MODE_P2P_GO) {
6153                 if (force_freq > 0) {
6154                         freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
6155                         if (freq < 0)
6156                                 return -1;
6157                 } else {
6158                         freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
6159                         if (freq < 0 ||
6160                             (freq > 0 && !freq_included(wpa_s, channels, freq)))
6161                                 freq = 0;
6162                 }
6163         } else if (ssid->mode == WPAS_MODE_INFRA) {
6164                 freq = neg_freq;
6165                 if (freq <= 0 || !freq_included(wpa_s, channels, freq)) {
6166                         struct os_reltime now;
6167                         struct wpa_bss *bss =
6168                                 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid);
6169
6170                         os_get_reltime(&now);
6171                         if (bss &&
6172                             !os_reltime_expired(&now, &bss->last_update, 5) &&
6173                             freq_included(wpa_s, channels, bss->freq))
6174                                 freq = bss->freq;
6175                         else
6176                                 freq = 0;
6177                 }
6178
6179                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq,
6180                                              force_scan);
6181         } else {
6182                 return -1;
6183         }
6184
6185         if (wpas_p2p_init_go_params(wpa_s, &params, freq, vht_center_freq2,
6186                                     ht40, vht, max_oper_chwidth, channels))
6187                 return -1;
6188
6189         params.role_go = 1;
6190         params.psk_set = ssid->psk_set;
6191         if (params.psk_set)
6192                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
6193         if (ssid->passphrase) {
6194                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
6195                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
6196                                    "persistent group");
6197                         return -1;
6198                 }
6199                 os_strlcpy(params.passphrase, ssid->passphrase,
6200                            sizeof(params.passphrase));
6201         }
6202         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
6203         params.ssid_len = ssid->ssid_len;
6204         params.persistent_group = 1;
6205
6206         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
6207         if (wpa_s == NULL)
6208                 return -1;
6209
6210         p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS);
6211
6212         wpa_s->p2p_first_connection_timeout = connection_timeout;
6213         wpas_start_wps_go(wpa_s, &params, 0);
6214
6215         return 0;
6216 }
6217
6218
6219 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
6220                                struct wpabuf *proberesp_ies)
6221 {
6222         struct wpa_supplicant *wpa_s = ctx;
6223         if (wpa_s->ap_iface) {
6224                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
6225                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
6226                         wpabuf_free(beacon_ies);
6227                         wpabuf_free(proberesp_ies);
6228                         return;
6229                 }
6230                 if (beacon_ies) {
6231                         wpabuf_free(hapd->p2p_beacon_ie);
6232                         hapd->p2p_beacon_ie = beacon_ies;
6233                 }
6234                 wpabuf_free(hapd->p2p_probe_resp_ie);
6235                 hapd->p2p_probe_resp_ie = proberesp_ies;
6236         } else {
6237                 wpabuf_free(beacon_ies);
6238                 wpabuf_free(proberesp_ies);
6239         }
6240         wpa_supplicant_ap_update_beacon(wpa_s);
6241 }
6242
6243
6244 static void wpas_p2p_idle_update(void *ctx, int idle)
6245 {
6246         struct wpa_supplicant *wpa_s = ctx;
6247         if (!wpa_s->ap_iface)
6248                 return;
6249         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
6250         if (idle) {
6251                 if (wpa_s->global->p2p_fail_on_wps_complete &&
6252                     wpa_s->p2p_in_provisioning) {
6253                         wpas_p2p_grpform_fail_after_wps(wpa_s);
6254                         return;
6255                 }
6256                 wpas_p2p_set_group_idle_timeout(wpa_s);
6257         } else
6258                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
6259 }
6260
6261
6262 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
6263                                        struct wpa_ssid *ssid)
6264 {
6265         struct p2p_group *group;
6266         struct p2p_group_config *cfg;
6267
6268         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6269                 return NULL;
6270
6271         cfg = os_zalloc(sizeof(*cfg));
6272         if (cfg == NULL)
6273                 return NULL;
6274
6275         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
6276                 cfg->persistent_group = 2;
6277         else if (ssid->p2p_persistent_group)
6278                 cfg->persistent_group = 1;
6279         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
6280         if (wpa_s->max_stations &&
6281             wpa_s->max_stations < wpa_s->conf->max_num_sta)
6282                 cfg->max_clients = wpa_s->max_stations;
6283         else
6284                 cfg->max_clients = wpa_s->conf->max_num_sta;
6285         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
6286         cfg->ssid_len = ssid->ssid_len;
6287         cfg->freq = ssid->frequency;
6288         cfg->cb_ctx = wpa_s;
6289         cfg->ie_update = wpas_p2p_ie_update;
6290         cfg->idle_update = wpas_p2p_idle_update;
6291
6292         group = p2p_group_init(wpa_s->global->p2p, cfg);
6293         if (group == NULL)
6294                 os_free(cfg);
6295         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
6296                 p2p_group_notif_formation_done(group);
6297         wpa_s->p2p_group = group;
6298         return group;
6299 }
6300
6301
6302 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6303                           int registrar)
6304 {
6305         struct wpa_ssid *ssid = wpa_s->current_ssid;
6306
6307         if (!wpa_s->p2p_in_provisioning) {
6308                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
6309                            "provisioning not in progress");
6310                 return;
6311         }
6312
6313         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6314                 u8 go_dev_addr[ETH_ALEN];
6315                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
6316                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6317                                           ssid->ssid_len);
6318                 /* Clear any stored provisioning info */
6319                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
6320         }
6321
6322         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
6323                              NULL);
6324         wpa_s->p2p_go_group_formation_completed = 1;
6325         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6326                 /*
6327                  * Use a separate timeout for initial data connection to
6328                  * complete to allow the group to be removed automatically if
6329                  * something goes wrong in this step before the P2P group idle
6330                  * timeout mechanism is taken into use.
6331                  */
6332                 wpa_dbg(wpa_s, MSG_DEBUG,
6333                         "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
6334                         P2P_MAX_INITIAL_CONN_WAIT);
6335                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6336                                        wpas_p2p_group_formation_timeout,
6337                                        wpa_s->parent, NULL);
6338                 /* Complete group formation on successful data connection. */
6339                 wpa_s->p2p_go_group_formation_completed = 0;
6340         } else if (ssid) {
6341                 /*
6342                  * Use a separate timeout for initial data connection to
6343                  * complete to allow the group to be removed automatically if
6344                  * the client does not complete data connection successfully.
6345                  */
6346                 wpa_dbg(wpa_s, MSG_DEBUG,
6347                         "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
6348                         P2P_MAX_INITIAL_CONN_WAIT_GO);
6349                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
6350                                        wpas_p2p_group_formation_timeout,
6351                                        wpa_s->parent, NULL);
6352                 /*
6353                  * Complete group formation on first successful data connection
6354                  */
6355                 wpa_s->p2p_go_group_formation_completed = 0;
6356         }
6357         if (wpa_s->global->p2p)
6358                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
6359         wpas_group_formation_completed(wpa_s, 1, 0);
6360 }
6361
6362
6363 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
6364                          struct wps_event_fail *fail)
6365 {
6366         if (!wpa_s->p2p_in_provisioning) {
6367                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
6368                            "provisioning not in progress");
6369                 return;
6370         }
6371
6372         if (wpa_s->go_params) {
6373                 p2p_clear_provisioning_info(
6374                         wpa_s->global->p2p,
6375                         wpa_s->go_params->peer_device_addr);
6376         }
6377
6378         wpas_notify_p2p_wps_failed(wpa_s, fail);
6379
6380         if (wpa_s == wpa_s->global->p2p_group_formation) {
6381                 /*
6382                  * Allow some time for the failed WPS negotiation exchange to
6383                  * complete, but remove the group since group formation cannot
6384                  * succeed after provisioning failure.
6385                  */
6386                 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
6387                 wpa_s->global->p2p_fail_on_wps_complete = 1;
6388                 eloop_deplete_timeout(0, 50000,
6389                                       wpas_p2p_group_formation_timeout,
6390                                       wpa_s->parent, NULL);
6391         }
6392 }
6393
6394
6395 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
6396 {
6397         if (!wpa_s->global->p2p_fail_on_wps_complete ||
6398             !wpa_s->p2p_in_provisioning)
6399                 return 0;
6400
6401         wpas_p2p_grpform_fail_after_wps(wpa_s);
6402
6403         return 1;
6404 }
6405
6406
6407 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6408                        const char *config_method,
6409                        enum wpas_p2p_prov_disc_use use,
6410                        struct p2ps_provision *p2ps_prov)
6411 {
6412         u16 config_methods;
6413
6414         wpa_s->global->pending_p2ps_group = 0;
6415         wpa_s->global->pending_p2ps_group_freq = 0;
6416         wpa_s->p2p_fallback_to_go_neg = 0;
6417         wpa_s->pending_pd_use = NORMAL_PD;
6418         if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) {
6419                 p2ps_prov->conncap = p2ps_group_capability(
6420                         wpa_s, P2PS_SETUP_NONE, p2ps_prov->role,
6421                         &p2ps_prov->force_freq, &p2ps_prov->pref_freq);
6422
6423                 wpa_printf(MSG_DEBUG,
6424                            "P2P: %s conncap: %d - ASP parsed: %x %x %d %s",
6425                            __func__, p2ps_prov->conncap,
6426                            p2ps_prov->adv_id, p2ps_prov->conncap,
6427                            p2ps_prov->status, p2ps_prov->info);
6428
6429                 config_methods = 0;
6430         } else if (os_strncmp(config_method, "display", 7) == 0)
6431                 config_methods = WPS_CONFIG_DISPLAY;
6432         else if (os_strncmp(config_method, "keypad", 6) == 0)
6433                 config_methods = WPS_CONFIG_KEYPAD;
6434         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
6435                  os_strncmp(config_method, "pushbutton", 10) == 0)
6436                 config_methods = WPS_CONFIG_PUSHBUTTON;
6437         else {
6438                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
6439                 os_free(p2ps_prov);
6440                 return -1;
6441         }
6442
6443         if (use == WPAS_P2P_PD_AUTO) {
6444                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
6445                 wpa_s->pending_pd_config_methods = config_methods;
6446                 wpa_s->p2p_auto_pd = 1;
6447                 wpa_s->p2p_auto_join = 0;
6448                 wpa_s->pending_pd_before_join = 0;
6449                 wpa_s->auto_pd_scan_retry = 0;
6450                 wpas_p2p_stop_find(wpa_s);
6451                 wpa_s->p2p_join_scan_count = 0;
6452                 os_get_reltime(&wpa_s->p2p_auto_started);
6453                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
6454                            wpa_s->p2p_auto_started.sec,
6455                            wpa_s->p2p_auto_started.usec);
6456                 wpas_p2p_join_scan(wpa_s, NULL);
6457                 return 0;
6458         }
6459
6460         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) {
6461                 os_free(p2ps_prov);
6462                 return -1;
6463         }
6464
6465         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov,
6466                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
6467                                  0, 1);
6468 }
6469
6470
6471 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
6472                               char *end)
6473 {
6474         return p2p_scan_result_text(ies, ies_len, buf, end);
6475 }
6476
6477
6478 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
6479 {
6480         if (!offchannel_pending_action_tx(wpa_s))
6481                 return;
6482
6483         if (wpa_s->p2p_send_action_work)
6484                 wpas_p2p_free_send_action_work(wpa_s);
6485
6486         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
6487                    "operation request");
6488         offchannel_clear_pending_action_tx(wpa_s);
6489 }
6490
6491
6492 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
6493                   enum p2p_discovery_type type,
6494                   unsigned int num_req_dev_types, const u8 *req_dev_types,
6495                   const u8 *dev_id, unsigned int search_delay,
6496                   u8 seek_cnt, const char **seek_string, int freq)
6497 {
6498         wpas_p2p_clear_pending_action_tx(wpa_s);
6499         wpa_s->p2p_long_listen = 0;
6500
6501         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
6502             wpa_s->p2p_in_provisioning)
6503                 return -1;
6504
6505         wpa_supplicant_cancel_sched_scan(wpa_s);
6506
6507         return p2p_find(wpa_s->global->p2p, timeout, type,
6508                         num_req_dev_types, req_dev_types, dev_id,
6509                         search_delay, seek_cnt, seek_string, freq);
6510 }
6511
6512
6513 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s,
6514                                             struct wpa_scan_results *scan_res)
6515 {
6516         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6517
6518         if (wpa_s->p2p_scan_work) {
6519                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
6520                 wpa_s->p2p_scan_work = NULL;
6521                 radio_work_done(work);
6522         }
6523
6524         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6525                 return;
6526
6527         /*
6528          * Indicate that results have been processed so that the P2P module can
6529          * continue pending tasks.
6530          */
6531         p2p_scan_res_handled(wpa_s->global->p2p);
6532 }
6533
6534
6535 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
6536 {
6537         wpas_p2p_clear_pending_action_tx(wpa_s);
6538         wpa_s->p2p_long_listen = 0;
6539         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6540         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
6541
6542         if (wpa_s->global->p2p)
6543                 p2p_stop_find(wpa_s->global->p2p);
6544
6545         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
6546                 wpa_printf(MSG_DEBUG,
6547                            "P2P: Do not consider the scan results after stop_find");
6548                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search;
6549         }
6550 }
6551
6552
6553 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
6554 {
6555         wpas_p2p_stop_find_oper(wpa_s);
6556         if (!wpa_s->global->pending_group_iface_for_p2ps)
6557                 wpas_p2p_remove_pending_group_interface(wpa_s);
6558 }
6559
6560
6561 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
6562 {
6563         struct wpa_supplicant *wpa_s = eloop_ctx;
6564         wpa_s->p2p_long_listen = 0;
6565 }
6566
6567
6568 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
6569 {
6570         int res;
6571
6572         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6573                 return -1;
6574
6575         wpa_supplicant_cancel_sched_scan(wpa_s);
6576         wpas_p2p_clear_pending_action_tx(wpa_s);
6577
6578         if (timeout == 0) {
6579                 /*
6580                  * This is a request for unlimited Listen state. However, at
6581                  * least for now, this is mapped to a Listen state for one
6582                  * hour.
6583                  */
6584                 timeout = 3600;
6585         }
6586         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6587         wpa_s->p2p_long_listen = 0;
6588
6589         /*
6590          * Stop previous find/listen operation to avoid trying to request a new
6591          * remain-on-channel operation while the driver is still running the
6592          * previous one.
6593          */
6594         if (wpa_s->global->p2p)
6595                 p2p_stop_find(wpa_s->global->p2p);
6596
6597         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
6598         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
6599                 wpa_s->p2p_long_listen = timeout * 1000;
6600                 eloop_register_timeout(timeout, 0,
6601                                        wpas_p2p_long_listen_timeout,
6602                                        wpa_s, NULL);
6603         }
6604
6605         return res;
6606 }
6607
6608
6609 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
6610                           u8 *buf, size_t len, int p2p_group)
6611 {
6612         struct wpabuf *p2p_ie;
6613         int ret;
6614
6615         if (wpa_s->global->p2p_disabled)
6616                 return -1;
6617         /*
6618          * Advertize mandatory cross connection capability even on
6619          * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP.
6620          */
6621         if (wpa_s->conf->p2p_disabled && p2p_group)
6622                 return -1;
6623         if (wpa_s->global->p2p == NULL)
6624                 return -1;
6625         if (bss == NULL)
6626                 return -1;
6627
6628         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
6629         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
6630                                p2p_group, p2p_ie);
6631         wpabuf_free(p2p_ie);
6632
6633         return ret;
6634 }
6635
6636
6637 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
6638                           const u8 *dst, const u8 *bssid,
6639                           const u8 *ie, size_t ie_len,
6640                           unsigned int rx_freq, int ssi_signal)
6641 {
6642         if (wpa_s->global->p2p_disabled)
6643                 return 0;
6644         if (wpa_s->global->p2p == NULL)
6645                 return 0;
6646
6647         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
6648                                  ie, ie_len, rx_freq)) {
6649         case P2P_PREQ_NOT_P2P:
6650                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
6651                                  ssi_signal);
6652                 /* fall through */
6653         case P2P_PREQ_MALFORMED:
6654         case P2P_PREQ_NOT_LISTEN:
6655         case P2P_PREQ_NOT_PROCESSED:
6656         default: /* make gcc happy */
6657                 return 0;
6658         case P2P_PREQ_PROCESSED:
6659                 return 1;
6660         }
6661 }
6662
6663
6664 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
6665                         const u8 *sa, const u8 *bssid,
6666                         u8 category, const u8 *data, size_t len, int freq)
6667 {
6668         if (wpa_s->global->p2p_disabled)
6669                 return;
6670         if (wpa_s->global->p2p == NULL)
6671                 return;
6672
6673         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
6674                       freq);
6675 }
6676
6677
6678 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
6679 {
6680         if (wpa_s->global->p2p_disabled)
6681                 return;
6682         if (wpa_s->global->p2p == NULL)
6683                 return;
6684
6685         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
6686 }
6687
6688
6689 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
6690 {
6691         p2p_group_deinit(wpa_s->p2p_group);
6692         wpa_s->p2p_group = NULL;
6693
6694         wpa_s->ap_configured_cb = NULL;
6695         wpa_s->ap_configured_cb_ctx = NULL;
6696         wpa_s->ap_configured_cb_data = NULL;
6697         wpa_s->connect_without_scan = NULL;
6698 }
6699
6700
6701 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
6702 {
6703         wpa_s->p2p_long_listen = 0;
6704
6705         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6706                 return -1;
6707
6708         return p2p_reject(wpa_s->global->p2p, addr);
6709 }
6710
6711
6712 /* Invite to reinvoke a persistent group */
6713 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6714                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
6715                     int vht_center_freq2, int ht40, int vht, int max_chwidth,
6716                     int pref_freq)
6717 {
6718         enum p2p_invite_role role;
6719         u8 *bssid = NULL;
6720         int force_freq = 0;
6721         int res;
6722         int no_pref_freq_given = pref_freq == 0;
6723         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6724
6725         wpa_s->global->p2p_invite_group = NULL;
6726         if (peer_addr)
6727                 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
6728         else
6729                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
6730
6731         wpa_s->p2p_persistent_go_freq = freq;
6732         wpa_s->p2p_go_ht40 = !!ht40;
6733         wpa_s->p2p_go_vht = !!vht;
6734         wpa_s->p2p_go_max_oper_chwidth = max_chwidth;
6735         wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
6736         if (ssid->mode == WPAS_MODE_P2P_GO) {
6737                 role = P2P_INVITE_ROLE_GO;
6738                 if (peer_addr == NULL) {
6739                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
6740                                    "address in invitation command");
6741                         return -1;
6742                 }
6743                 if (wpas_p2p_create_iface(wpa_s)) {
6744                         if (wpas_p2p_add_group_interface(wpa_s,
6745                                                          WPA_IF_P2P_GO) < 0) {
6746                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
6747                                            "allocate a new interface for the "
6748                                            "group");
6749                                 return -1;
6750                         }
6751                         bssid = wpa_s->pending_interface_addr;
6752                 } else
6753                         bssid = wpa_s->own_addr;
6754         } else {
6755                 role = P2P_INVITE_ROLE_CLIENT;
6756                 peer_addr = ssid->bssid;
6757         }
6758         wpa_s->pending_invite_ssid_id = ssid->id;
6759
6760         size = P2P_MAX_PREF_CHANNELS;
6761         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6762                                    role == P2P_INVITE_ROLE_GO,
6763                                    pref_freq_list, &size);
6764         if (res)
6765                 return res;
6766
6767         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6768                 return -1;
6769
6770         p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
6771
6772         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
6773             no_pref_freq_given && pref_freq > 0 &&
6774             wpa_s->num_multichan_concurrent > 1 &&
6775             wpas_p2p_num_unused_channels(wpa_s) > 0) {
6776                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
6777                            pref_freq);
6778                 pref_freq = 0;
6779         }
6780
6781         /*
6782          * Stop any find/listen operations before invitation and possibly
6783          * connection establishment.
6784          */
6785         wpas_p2p_stop_find_oper(wpa_s);
6786
6787         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6788                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
6789                           1, pref_freq, -1);
6790 }
6791
6792
6793 /* Invite to join an active group */
6794 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
6795                           const u8 *peer_addr, const u8 *go_dev_addr)
6796 {
6797         struct wpa_global *global = wpa_s->global;
6798         enum p2p_invite_role role;
6799         u8 *bssid = NULL;
6800         struct wpa_ssid *ssid;
6801         int persistent;
6802         int freq = 0, force_freq = 0, pref_freq = 0;
6803         int res;
6804         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6805
6806         wpa_s->p2p_persistent_go_freq = 0;
6807         wpa_s->p2p_go_ht40 = 0;
6808         wpa_s->p2p_go_vht = 0;
6809         wpa_s->p2p_go_vht_center_freq2 = 0;
6810         wpa_s->p2p_go_max_oper_chwidth = 0;
6811
6812         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6813                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
6814                         break;
6815         }
6816         if (wpa_s == NULL) {
6817                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
6818                 return -1;
6819         }
6820
6821         ssid = wpa_s->current_ssid;
6822         if (ssid == NULL) {
6823                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
6824                            "invitation");
6825                 return -1;
6826         }
6827
6828         wpa_s->global->p2p_invite_group = wpa_s;
6829         persistent = ssid->p2p_persistent_group &&
6830                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
6831                                         ssid->ssid, ssid->ssid_len);
6832
6833         if (ssid->mode == WPAS_MODE_P2P_GO) {
6834                 role = P2P_INVITE_ROLE_ACTIVE_GO;
6835                 bssid = wpa_s->own_addr;
6836                 if (go_dev_addr == NULL)
6837                         go_dev_addr = wpa_s->global->p2p_dev_addr;
6838                 freq = ssid->frequency;
6839         } else {
6840                 role = P2P_INVITE_ROLE_CLIENT;
6841                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
6842                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
6843                                    "invite to current group");
6844                         return -1;
6845                 }
6846                 bssid = wpa_s->bssid;
6847                 if (go_dev_addr == NULL &&
6848                     !is_zero_ether_addr(wpa_s->go_dev_addr))
6849                         go_dev_addr = wpa_s->go_dev_addr;
6850                 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6851                         (int) wpa_s->assoc_freq;
6852         }
6853         wpa_s->parent->pending_invite_ssid_id = -1;
6854
6855         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6856                 return -1;
6857
6858         size = P2P_MAX_PREF_CHANNELS;
6859         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6860                                    role == P2P_INVITE_ROLE_ACTIVE_GO,
6861                                    pref_freq_list, &size);
6862         if (res)
6863                 return res;
6864         wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
6865
6866         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6867                           ssid->ssid, ssid->ssid_len, force_freq,
6868                           go_dev_addr, persistent, pref_freq, -1);
6869 }
6870
6871
6872 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
6873 {
6874         struct wpa_ssid *ssid = wpa_s->current_ssid;
6875         u8 go_dev_addr[ETH_ALEN];
6876         int network_id = -1;
6877         int persistent;
6878         int freq;
6879         u8 ip[3 * 4];
6880         char ip_addr[100];
6881
6882         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
6883                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6884                                      wpa_s->parent, NULL);
6885         }
6886
6887         if (!wpa_s->show_group_started || !ssid)
6888                 return;
6889
6890         wpa_s->show_group_started = 0;
6891         if (!wpa_s->p2p_go_group_formation_completed &&
6892             wpa_s->global->p2p_group_formation == wpa_s) {
6893                 wpa_dbg(wpa_s, MSG_DEBUG,
6894                         "P2P: Marking group formation completed on client on data connection");
6895                 wpa_s->p2p_go_group_formation_completed = 1;
6896                 wpa_s->global->p2p_group_formation = NULL;
6897                 wpa_s->p2p_in_provisioning = 0;
6898                 wpa_s->p2p_in_invitation = 0;
6899         }
6900
6901         os_memset(go_dev_addr, 0, ETH_ALEN);
6902         if (ssid->bssid_set)
6903                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
6904         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6905                                                ssid->ssid_len);
6906         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
6907
6908         if (wpa_s->global->p2p_group_formation == wpa_s)
6909                 wpa_s->global->p2p_group_formation = NULL;
6910
6911         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6912                 (int) wpa_s->assoc_freq;
6913
6914         ip_addr[0] = '\0';
6915         if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
6916                 int res;
6917
6918                 res = os_snprintf(ip_addr, sizeof(ip_addr),
6919                                   " ip_addr=%u.%u.%u.%u "
6920                                   "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
6921                                   ip[0], ip[1], ip[2], ip[3],
6922                                   ip[4], ip[5], ip[6], ip[7],
6923                                   ip[8], ip[9], ip[10], ip[11]);
6924                 if (os_snprintf_error(sizeof(ip_addr), res))
6925                         ip_addr[0] = '\0';
6926         }
6927
6928         wpas_p2p_group_started(wpa_s, 0, ssid, freq,
6929                                ssid->passphrase == NULL && ssid->psk_set ?
6930                                ssid->psk : NULL,
6931                                ssid->passphrase, go_dev_addr, persistent,
6932                                ip_addr);
6933
6934         if (persistent)
6935                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
6936                                                              ssid, go_dev_addr);
6937         if (network_id < 0)
6938                 network_id = ssid->id;
6939         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
6940 }
6941
6942
6943 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
6944                           u32 interval1, u32 duration2, u32 interval2)
6945 {
6946         int ret;
6947
6948         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6949                 return -1;
6950
6951         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
6952             wpa_s->current_ssid == NULL ||
6953             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
6954                 return -1;
6955
6956         ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
6957                                wpa_s->own_addr, wpa_s->assoc_freq,
6958                                duration1, interval1, duration2, interval2);
6959         if (ret == 0)
6960                 wpa_s->waiting_presence_resp = 1;
6961
6962         return ret;
6963 }
6964
6965
6966 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
6967                         unsigned int interval)
6968 {
6969         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6970                 return -1;
6971
6972         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
6973 }
6974
6975
6976 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
6977 {
6978         if (wpa_s->current_ssid == NULL) {
6979                 /*
6980                  * current_ssid can be cleared when P2P client interface gets
6981                  * disconnected, so assume this interface was used as P2P
6982                  * client.
6983                  */
6984                 return 1;
6985         }
6986         return wpa_s->current_ssid->p2p_group &&
6987                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
6988 }
6989
6990
6991 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
6992 {
6993         struct wpa_supplicant *wpa_s = eloop_ctx;
6994
6995         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
6996                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
6997                            "disabled");
6998                 return;
6999         }
7000
7001         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
7002                    "group");
7003         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
7004 }
7005
7006
7007 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
7008 {
7009         int timeout;
7010
7011         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7012                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7013
7014         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7015                 return;
7016
7017         timeout = wpa_s->conf->p2p_group_idle;
7018         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
7019             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
7020             timeout = P2P_MAX_CLIENT_IDLE;
7021
7022         if (timeout == 0)
7023                 return;
7024
7025         if (timeout < 0) {
7026                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
7027                         timeout = 0; /* special client mode no-timeout */
7028                 else
7029                         return;
7030         }
7031
7032         if (wpa_s->p2p_in_provisioning) {
7033                 /*
7034                  * Use the normal group formation timeout during the
7035                  * provisioning phase to avoid terminating this process too
7036                  * early due to group idle timeout.
7037                  */
7038                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7039                            "during provisioning");
7040                 return;
7041         }
7042
7043         if (wpa_s->show_group_started) {
7044                 /*
7045                  * Use the normal group formation timeout between the end of
7046                  * the provisioning phase and completion of 4-way handshake to
7047                  * avoid terminating this process too early due to group idle
7048                  * timeout.
7049                  */
7050                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7051                            "while waiting for initial 4-way handshake to "
7052                            "complete");
7053                 return;
7054         }
7055
7056         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
7057                    timeout);
7058         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
7059                                wpa_s, NULL);
7060 }
7061
7062
7063 /* Returns 1 if the interface was removed */
7064 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7065                           u16 reason_code, const u8 *ie, size_t ie_len,
7066                           int locally_generated)
7067 {
7068         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7069                 return 0;
7070
7071         if (!locally_generated)
7072                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7073                                  ie_len);
7074
7075         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
7076             wpa_s->current_ssid &&
7077             wpa_s->current_ssid->p2p_group &&
7078             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
7079                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
7080                            "session is ending");
7081                 if (wpas_p2p_group_delete(wpa_s,
7082                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
7083                     > 0)
7084                         return 1;
7085         }
7086
7087         return 0;
7088 }
7089
7090
7091 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7092                              u16 reason_code, const u8 *ie, size_t ie_len,
7093                              int locally_generated)
7094 {
7095         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7096                 return;
7097
7098         if (!locally_generated)
7099                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7100                                    ie_len);
7101 }
7102
7103
7104 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
7105 {
7106         struct p2p_data *p2p = wpa_s->global->p2p;
7107
7108         if (p2p == NULL)
7109                 return;
7110
7111         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
7112                 return;
7113
7114         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
7115                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
7116
7117         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
7118                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
7119
7120         if (wpa_s->wps &&
7121             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
7122                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
7123
7124         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
7125                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
7126
7127         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
7128                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
7129                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
7130                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
7131                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
7132         }
7133
7134         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
7135                 p2p_set_sec_dev_types(p2p,
7136                                       (void *) wpa_s->conf->sec_device_type,
7137                                       wpa_s->conf->num_sec_device_types);
7138
7139         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
7140                 int i;
7141                 p2p_remove_wps_vendor_extensions(p2p);
7142                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
7143                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
7144                                 continue;
7145                         p2p_add_wps_vendor_extension(
7146                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
7147                 }
7148         }
7149
7150         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
7151             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
7152                 char country[3];
7153                 country[0] = wpa_s->conf->country[0];
7154                 country[1] = wpa_s->conf->country[1];
7155                 country[2] = 0x04;
7156                 p2p_set_country(p2p, country);
7157         }
7158
7159         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
7160                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
7161                                      wpa_s->conf->p2p_ssid_postfix ?
7162                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
7163                                      0);
7164         }
7165
7166         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
7167                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
7168
7169         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
7170                 u8 reg_class, channel;
7171                 int ret;
7172                 unsigned int r;
7173                 u8 channel_forced;
7174
7175                 if (wpa_s->conf->p2p_listen_reg_class &&
7176                     wpa_s->conf->p2p_listen_channel) {
7177                         reg_class = wpa_s->conf->p2p_listen_reg_class;
7178                         channel = wpa_s->conf->p2p_listen_channel;
7179                         channel_forced = 1;
7180                 } else {
7181                         reg_class = 81;
7182                         /*
7183                          * Pick one of the social channels randomly as the
7184                          * listen channel.
7185                          */
7186                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7187                                 channel = 1;
7188                         else
7189                                 channel = 1 + (r % 3) * 5;
7190                         channel_forced = 0;
7191                 }
7192                 ret = p2p_set_listen_channel(p2p, reg_class, channel,
7193                                              channel_forced);
7194                 if (ret)
7195                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
7196                                    "failed: %d", ret);
7197         }
7198         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
7199                 u8 op_reg_class, op_channel, cfg_op_channel;
7200                 int ret = 0;
7201                 unsigned int r;
7202                 if (wpa_s->conf->p2p_oper_reg_class &&
7203                     wpa_s->conf->p2p_oper_channel) {
7204                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
7205                         op_channel = wpa_s->conf->p2p_oper_channel;
7206                         cfg_op_channel = 1;
7207                 } else {
7208                         op_reg_class = 81;
7209                         /*
7210                          * Use random operation channel from (1, 6, 11)
7211                          *if no other preference is indicated.
7212                          */
7213                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7214                                 op_channel = 1;
7215                         else
7216                                 op_channel = 1 + (r % 3) * 5;
7217                         cfg_op_channel = 0;
7218                 }
7219                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
7220                                            cfg_op_channel);
7221                 if (ret)
7222                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
7223                                    "failed: %d", ret);
7224         }
7225
7226         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
7227                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
7228                                       wpa_s->conf->p2p_pref_chan) < 0) {
7229                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
7230                                    "update failed");
7231                 }
7232
7233                 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
7234                         wpa_printf(MSG_ERROR, "P2P: No GO channel list "
7235                                    "update failed");
7236                 }
7237         }
7238
7239         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN)
7240                 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len);
7241 }
7242
7243
7244 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
7245                      int duration)
7246 {
7247         if (!wpa_s->ap_iface)
7248                 return -1;
7249         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
7250                                    duration);
7251 }
7252
7253
7254 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
7255 {
7256         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7257                 return -1;
7258
7259         wpa_s->global->cross_connection = enabled;
7260         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
7261
7262         if (!enabled) {
7263                 struct wpa_supplicant *iface;
7264
7265                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7266                 {
7267                         if (iface->cross_connect_enabled == 0)
7268                                 continue;
7269
7270                         iface->cross_connect_enabled = 0;
7271                         iface->cross_connect_in_use = 0;
7272                         wpa_msg_global(iface->parent, MSG_INFO,
7273                                        P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7274                                        iface->ifname,
7275                                        iface->cross_connect_uplink);
7276                 }
7277         }
7278
7279         return 0;
7280 }
7281
7282
7283 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
7284 {
7285         struct wpa_supplicant *iface;
7286
7287         if (!uplink->global->cross_connection)
7288                 return;
7289
7290         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7291                 if (!iface->cross_connect_enabled)
7292                         continue;
7293                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7294                     0)
7295                         continue;
7296                 if (iface->ap_iface == NULL)
7297                         continue;
7298                 if (iface->cross_connect_in_use)
7299                         continue;
7300
7301                 iface->cross_connect_in_use = 1;
7302                 wpa_msg_global(iface->parent, MSG_INFO,
7303                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7304                                iface->ifname, iface->cross_connect_uplink);
7305         }
7306 }
7307
7308
7309 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
7310 {
7311         struct wpa_supplicant *iface;
7312
7313         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7314                 if (!iface->cross_connect_enabled)
7315                         continue;
7316                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7317                     0)
7318                         continue;
7319                 if (!iface->cross_connect_in_use)
7320                         continue;
7321
7322                 wpa_msg_global(iface->parent, MSG_INFO,
7323                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7324                                iface->ifname, iface->cross_connect_uplink);
7325                 iface->cross_connect_in_use = 0;
7326         }
7327 }
7328
7329
7330 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
7331 {
7332         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
7333             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
7334             wpa_s->cross_connect_disallowed)
7335                 wpas_p2p_disable_cross_connect(wpa_s);
7336         else
7337                 wpas_p2p_enable_cross_connect(wpa_s);
7338         if (!wpa_s->ap_iface &&
7339             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7340                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7341 }
7342
7343
7344 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
7345 {
7346         wpas_p2p_disable_cross_connect(wpa_s);
7347         if (!wpa_s->ap_iface &&
7348             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
7349                                          wpa_s, NULL))
7350                 wpas_p2p_set_group_idle_timeout(wpa_s);
7351 }
7352
7353
7354 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
7355 {
7356         struct wpa_supplicant *iface;
7357
7358         if (!wpa_s->global->cross_connection)
7359                 return;
7360
7361         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7362                 if (iface == wpa_s)
7363                         continue;
7364                 if (iface->drv_flags &
7365                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
7366                         continue;
7367                 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) &&
7368                     iface != wpa_s->parent)
7369                         continue;
7370
7371                 wpa_s->cross_connect_enabled = 1;
7372                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
7373                            sizeof(wpa_s->cross_connect_uplink));
7374                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
7375                            "%s to %s whenever uplink is available",
7376                            wpa_s->ifname, wpa_s->cross_connect_uplink);
7377
7378                 if (iface->ap_iface || iface->current_ssid == NULL ||
7379                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
7380                     iface->cross_connect_disallowed ||
7381                     iface->wpa_state != WPA_COMPLETED)
7382                         break;
7383
7384                 wpa_s->cross_connect_in_use = 1;
7385                 wpa_msg_global(wpa_s->parent, MSG_INFO,
7386                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7387                                wpa_s->ifname, wpa_s->cross_connect_uplink);
7388                 break;
7389         }
7390 }
7391
7392
7393 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
7394 {
7395         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
7396             !wpa_s->p2p_in_provisioning)
7397                 return 0; /* not P2P client operation */
7398
7399         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
7400                    "session overlap");
7401         if (wpa_s != wpa_s->parent)
7402                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
7403         wpas_p2p_group_formation_failed(wpa_s, 0);
7404         return 1;
7405 }
7406
7407
7408 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
7409 {
7410         struct wpa_supplicant *wpa_s = eloop_ctx;
7411         wpas_p2p_notif_pbc_overlap(wpa_s);
7412 }
7413
7414
7415 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s,
7416                                   enum wpas_p2p_channel_update_trig trig)
7417 {
7418         struct p2p_channels chan, cli_chan;
7419         struct wpa_used_freq_data *freqs = NULL;
7420         unsigned int num = wpa_s->num_multichan_concurrent;
7421
7422         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
7423                 return;
7424
7425         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
7426         if (!freqs)
7427                 return;
7428
7429         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
7430
7431         os_memset(&chan, 0, sizeof(chan));
7432         os_memset(&cli_chan, 0, sizeof(cli_chan));
7433         if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
7434                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
7435                            "channel list");
7436                 return;
7437         }
7438
7439         p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
7440
7441         wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
7442
7443         /*
7444          * The used frequencies map changed, so it is possible that a GO is
7445          * using a channel that is no longer valid for P2P use. It is also
7446          * possible that due to policy consideration, it would be preferable to
7447          * move it to a frequency already used by other station interfaces.
7448          */
7449         wpas_p2p_consider_moving_gos(wpa_s, freqs, num, trig);
7450
7451         os_free(freqs);
7452 }
7453
7454
7455 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
7456                                      struct wpa_scan_results *scan_res)
7457 {
7458         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
7459 }
7460
7461
7462 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
7463 {
7464         struct wpa_global *global = wpa_s->global;
7465         int found = 0;
7466         const u8 *peer;
7467
7468         if (global->p2p == NULL)
7469                 return -1;
7470
7471         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
7472
7473         if (wpa_s->pending_interface_name[0] &&
7474             !is_zero_ether_addr(wpa_s->pending_interface_addr))
7475                 found = 1;
7476
7477         peer = p2p_get_go_neg_peer(global->p2p);
7478         if (peer) {
7479                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
7480                            MACSTR, MAC2STR(peer));
7481                 p2p_unauthorize(global->p2p, peer);
7482                 found = 1;
7483         }
7484
7485         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
7486                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
7487                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
7488                 found = 1;
7489         }
7490
7491         if (wpa_s->pending_pd_before_join) {
7492                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
7493                 wpa_s->pending_pd_before_join = 0;
7494                 found = 1;
7495         }
7496
7497         wpas_p2p_stop_find(wpa_s);
7498
7499         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7500                 if (wpa_s == global->p2p_group_formation &&
7501                     (wpa_s->p2p_in_provisioning ||
7502                      wpa_s->parent->pending_interface_type ==
7503                      WPA_IF_P2P_CLIENT)) {
7504                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
7505                                    "formation found - cancelling",
7506                                    wpa_s->ifname);
7507                         found = 1;
7508                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7509                                              wpa_s->parent, NULL);
7510                         if (wpa_s->p2p_in_provisioning) {
7511                                 wpas_group_formation_completed(wpa_s, 0, 0);
7512                                 break;
7513                         }
7514                         wpas_p2p_group_delete(wpa_s,
7515                                               P2P_GROUP_REMOVAL_REQUESTED);
7516                         break;
7517                 } else if (wpa_s->p2p_in_invitation) {
7518                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
7519                                    wpa_s->ifname);
7520                         found = 1;
7521                         wpas_p2p_group_formation_failed(wpa_s, 0);
7522                         break;
7523                 }
7524         }
7525
7526         if (!found) {
7527                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
7528                 return -1;
7529         }
7530
7531         return 0;
7532 }
7533
7534
7535 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
7536 {
7537         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7538                 return;
7539
7540         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
7541                    "being available anymore");
7542         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
7543 }
7544
7545
7546 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
7547                                    int freq_24, int freq_5, int freq_overall)
7548 {
7549         struct p2p_data *p2p = wpa_s->global->p2p;
7550         if (p2p == NULL)
7551                 return;
7552         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
7553 }
7554
7555
7556 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
7557 {
7558         u8 peer[ETH_ALEN];
7559         struct p2p_data *p2p = wpa_s->global->p2p;
7560
7561         if (p2p == NULL)
7562                 return -1;
7563
7564         if (hwaddr_aton(addr, peer))
7565                 return -1;
7566
7567         return p2p_unauthorize(p2p, peer);
7568 }
7569
7570
7571 /**
7572  * wpas_p2p_disconnect - Disconnect from a P2P Group
7573  * @wpa_s: Pointer to wpa_supplicant data
7574  * Returns: 0 on success, -1 on failure
7575  *
7576  * This can be used to disconnect from a group in which the local end is a P2P
7577  * Client or to end a P2P Group in case the local end is the Group Owner. If a
7578  * virtual network interface was created for this group, that interface will be
7579  * removed. Otherwise, only the configured P2P group network will be removed
7580  * from the interface.
7581  */
7582 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
7583 {
7584
7585         if (wpa_s == NULL)
7586                 return -1;
7587
7588         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
7589                 -1 : 0;
7590 }
7591
7592
7593 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
7594 {
7595         int ret;
7596
7597         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7598                 return 0;
7599
7600         ret = p2p_in_progress(wpa_s->global->p2p);
7601         if (ret == 0) {
7602                 /*
7603                  * Check whether there is an ongoing WPS provisioning step (or
7604                  * other parts of group formation) on another interface since
7605                  * p2p_in_progress() does not report this to avoid issues for
7606                  * scans during such provisioning step.
7607                  */
7608                 if (wpa_s->global->p2p_group_formation &&
7609                     wpa_s->global->p2p_group_formation != wpa_s) {
7610                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
7611                                 "in group formation",
7612                                 wpa_s->global->p2p_group_formation->ifname);
7613                         ret = 1;
7614                 }
7615         }
7616
7617         if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
7618                 struct os_reltime now;
7619                 os_get_reltime(&now);
7620                 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
7621                                        P2P_MAX_INITIAL_CONN_WAIT_GO)) {
7622                         /* Wait for the first client has expired */
7623                         wpa_s->global->p2p_go_wait_client.sec = 0;
7624                 } else {
7625                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
7626                         ret = 1;
7627                 }
7628         }
7629
7630         return ret;
7631 }
7632
7633
7634 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
7635                               struct wpa_ssid *ssid)
7636 {
7637         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
7638             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7639                                  wpa_s->parent, NULL) > 0) {
7640                 /**
7641                  * Remove the network by scheduling the group formation
7642                  * timeout to happen immediately. The teardown code
7643                  * needs to be scheduled to run asynch later so that we
7644                  * don't delete data from under ourselves unexpectedly.
7645                  * Calling wpas_p2p_group_formation_timeout directly
7646                  * causes a series of crashes in WPS failure scenarios.
7647                  */
7648                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
7649                            "P2P group network getting removed");
7650                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
7651                                        wpa_s->parent, NULL);
7652         }
7653 }
7654
7655
7656 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
7657                                           const u8 *addr, const u8 *ssid,
7658                                           size_t ssid_len)
7659 {
7660         struct wpa_ssid *s;
7661         size_t i;
7662
7663         for (s = wpa_s->conf->ssid; s; s = s->next) {
7664                 if (s->disabled != 2)
7665                         continue;
7666                 if (ssid &&
7667                     (ssid_len != s->ssid_len ||
7668                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
7669                         continue;
7670                 if (addr == NULL) {
7671                         if (s->mode == WPAS_MODE_P2P_GO)
7672                                 return s;
7673                         continue;
7674                 }
7675                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
7676                         return s; /* peer is GO in the persistent group */
7677                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
7678                         continue;
7679                 for (i = 0; i < s->num_p2p_clients; i++) {
7680                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
7681                                       addr, ETH_ALEN) == 0)
7682                                 return s; /* peer is P2P client in persistent
7683                                            * group */
7684                 }
7685         }
7686
7687         return NULL;
7688 }
7689
7690
7691 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
7692                                        const u8 *addr)
7693 {
7694         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7695                                  wpa_s->parent, NULL) > 0) {
7696                 /*
7697                  * This can happen if WPS provisioning step is not terminated
7698                  * cleanly (e.g., P2P Client does not send WSC_Done). Since the
7699                  * peer was able to connect, there is no need to time out group
7700                  * formation after this, though. In addition, this is used with
7701                  * the initial connection wait on the GO as a separate formation
7702                  * timeout and as such, expected to be hit after the initial WPS
7703                  * provisioning step.
7704                  */
7705                 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
7706
7707                 if (!wpa_s->p2p_go_group_formation_completed &&
7708                     !wpa_s->group_formation_reported) {
7709                         /*
7710                          * GO has not yet notified group formation success since
7711                          * the WPS step was not completed cleanly. Do that
7712                          * notification now since the P2P Client was able to
7713                          * connect and as such, must have received the
7714                          * credential from the WPS step.
7715                          */
7716                         if (wpa_s->global->p2p)
7717                                 p2p_wps_success_cb(wpa_s->global->p2p, addr);
7718                         wpas_group_formation_completed(wpa_s, 1, 0);
7719                 }
7720         }
7721         if (!wpa_s->p2p_go_group_formation_completed) {
7722                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
7723                 wpa_s->p2p_go_group_formation_completed = 1;
7724                 wpa_s->global->p2p_group_formation = NULL;
7725                 wpa_s->p2p_in_provisioning = 0;
7726                 wpa_s->p2p_in_invitation = 0;
7727         }
7728         wpa_s->global->p2p_go_wait_client.sec = 0;
7729         if (addr == NULL)
7730                 return;
7731         wpas_p2p_add_persistent_group_client(wpa_s, addr);
7732 }
7733
7734
7735 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
7736                                        int group_added)
7737 {
7738         struct wpa_supplicant *group = wpa_s;
7739         int ret = 0;
7740
7741         if (wpa_s->global->p2p_group_formation)
7742                 group = wpa_s->global->p2p_group_formation;
7743         wpa_s = wpa_s->global->p2p_init_wpa_s;
7744         offchannel_send_action_done(wpa_s);
7745         if (group_added)
7746                 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
7747         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
7748         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
7749                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
7750                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
7751                          wpa_s->p2p_go_vht_center_freq2,
7752                          wpa_s->p2p_persistent_id,
7753                          wpa_s->p2p_pd_before_go_neg,
7754                          wpa_s->p2p_go_ht40,
7755                          wpa_s->p2p_go_vht,
7756                          wpa_s->p2p_go_max_oper_chwidth);
7757         return ret;
7758 }
7759
7760
7761 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
7762 {
7763         int res;
7764
7765         if (!wpa_s->p2p_fallback_to_go_neg ||
7766             wpa_s->p2p_in_provisioning <= 5)
7767                 return 0;
7768
7769         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
7770                 return 0; /* peer operating as a GO */
7771
7772         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
7773                 "fallback to GO Negotiation");
7774         wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG
7775                        "reason=GO-not-found");
7776         res = wpas_p2p_fallback_to_go_neg(wpa_s, 1);
7777
7778         return res == 1 ? 2 : 1;
7779 }
7780
7781
7782 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
7783 {
7784         struct wpa_supplicant *ifs;
7785
7786         if (wpa_s->wpa_state > WPA_SCANNING) {
7787                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
7788                         "concurrent operation",
7789                         wpa_s->conf->p2p_search_delay);
7790                 return wpa_s->conf->p2p_search_delay;
7791         }
7792
7793         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
7794                          radio_list) {
7795                 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
7796                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
7797                                 "delay due to concurrent operation on "
7798                                 "interface %s",
7799                                 wpa_s->conf->p2p_search_delay,
7800                                 ifs->ifname);
7801                         return wpa_s->conf->p2p_search_delay;
7802                 }
7803         }
7804
7805         return 0;
7806 }
7807
7808
7809 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
7810                                      struct wpa_ssid *s, const u8 *addr,
7811                                      int iface_addr)
7812 {
7813         struct psk_list_entry *psk, *tmp;
7814         int changed = 0;
7815
7816         dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
7817                               list) {
7818                 if ((iface_addr && !psk->p2p &&
7819                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
7820                     (!iface_addr && psk->p2p &&
7821                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
7822                         wpa_dbg(wpa_s, MSG_DEBUG,
7823                                 "P2P: Remove persistent group PSK list entry for "
7824                                 MACSTR " p2p=%u",
7825                                 MAC2STR(psk->addr), psk->p2p);
7826                         dl_list_del(&psk->list);
7827                         os_free(psk);
7828                         changed++;
7829                 }
7830         }
7831
7832         return changed;
7833 }
7834
7835
7836 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
7837                          const u8 *p2p_dev_addr,
7838                          const u8 *psk, size_t psk_len)
7839 {
7840         struct wpa_ssid *ssid = wpa_s->current_ssid;
7841         struct wpa_ssid *persistent;
7842         struct psk_list_entry *p, *last;
7843
7844         if (psk_len != sizeof(p->psk))
7845                 return;
7846
7847         if (p2p_dev_addr) {
7848                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
7849                         " p2p_dev_addr=" MACSTR,
7850                         MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
7851                 if (is_zero_ether_addr(p2p_dev_addr))
7852                         p2p_dev_addr = NULL;
7853         } else {
7854                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
7855                         MAC2STR(mac_addr));
7856         }
7857
7858         if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
7859                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
7860                 /* To be added to persistent group once created */
7861                 if (wpa_s->global->add_psk == NULL) {
7862                         wpa_s->global->add_psk = os_zalloc(sizeof(*p));
7863                         if (wpa_s->global->add_psk == NULL)
7864                                 return;
7865                 }
7866                 p = wpa_s->global->add_psk;
7867                 if (p2p_dev_addr) {
7868                         p->p2p = 1;
7869                         os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7870                 } else {
7871                         p->p2p = 0;
7872                         os_memcpy(p->addr, mac_addr, ETH_ALEN);
7873                 }
7874                 os_memcpy(p->psk, psk, psk_len);
7875                 return;
7876         }
7877
7878         if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
7879                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
7880                 return;
7881         }
7882
7883         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
7884                                              ssid->ssid_len);
7885         if (!persistent) {
7886                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
7887                 return;
7888         }
7889
7890         p = os_zalloc(sizeof(*p));
7891         if (p == NULL)
7892                 return;
7893         if (p2p_dev_addr) {
7894                 p->p2p = 1;
7895                 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7896         } else {
7897                 p->p2p = 0;
7898                 os_memcpy(p->addr, mac_addr, ETH_ALEN);
7899         }
7900         os_memcpy(p->psk, psk, psk_len);
7901
7902         if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
7903             (last = dl_list_last(&persistent->psk_list,
7904                                  struct psk_list_entry, list))) {
7905                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
7906                         MACSTR " (p2p=%u) to make room for a new one",
7907                         MAC2STR(last->addr), last->p2p);
7908                 dl_list_del(&last->list);
7909                 os_free(last);
7910         }
7911
7912         wpas_p2p_remove_psk_entry(wpa_s->parent, persistent,
7913                                   p2p_dev_addr ? p2p_dev_addr : mac_addr,
7914                                   p2p_dev_addr == NULL);
7915         if (p2p_dev_addr) {
7916                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
7917                         MACSTR, MAC2STR(p2p_dev_addr));
7918         } else {
7919                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
7920                         MAC2STR(mac_addr));
7921         }
7922         dl_list_add(&persistent->psk_list, &p->list);
7923
7924         if (wpa_s->parent->conf->update_config &&
7925             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
7926                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
7927 }
7928
7929
7930 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
7931                                 struct wpa_ssid *s, const u8 *addr,
7932                                 int iface_addr)
7933 {
7934         int res;
7935
7936         res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
7937         if (res > 0 && wpa_s->conf->update_config &&
7938             wpa_config_write(wpa_s->confname, wpa_s->conf))
7939                 wpa_dbg(wpa_s, MSG_DEBUG,
7940                         "P2P: Failed to update configuration");
7941 }
7942
7943
7944 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
7945                                       const u8 *peer, int iface_addr)
7946 {
7947         struct hostapd_data *hapd;
7948         struct hostapd_wpa_psk *psk, *prev, *rem;
7949         struct sta_info *sta;
7950
7951         if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
7952             wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
7953                 return;
7954
7955         /* Remove per-station PSK entry */
7956         hapd = wpa_s->ap_iface->bss[0];
7957         prev = NULL;
7958         psk = hapd->conf->ssid.wpa_psk;
7959         while (psk) {
7960                 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
7961                     (!iface_addr &&
7962                      os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
7963                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
7964                                 MACSTR " iface_addr=%d",
7965                                 MAC2STR(peer), iface_addr);
7966                         if (prev)
7967                                 prev->next = psk->next;
7968                         else
7969                                 hapd->conf->ssid.wpa_psk = psk->next;
7970                         rem = psk;
7971                         psk = psk->next;
7972                         os_free(rem);
7973                 } else {
7974                         prev = psk;
7975                         psk = psk->next;
7976                 }
7977         }
7978
7979         /* Disconnect from group */
7980         if (iface_addr)
7981                 sta = ap_get_sta(hapd, peer);
7982         else
7983                 sta = ap_get_sta_p2p(hapd, peer);
7984         if (sta) {
7985                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
7986                         " (iface_addr=%d) from group",
7987                         MAC2STR(peer), iface_addr);
7988                 hostapd_drv_sta_deauth(hapd, sta->addr,
7989                                        WLAN_REASON_DEAUTH_LEAVING);
7990                 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
7991         }
7992 }
7993
7994
7995 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
7996                             int iface_addr)
7997 {
7998         struct wpa_ssid *s;
7999         struct wpa_supplicant *w;
8000         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
8001
8002         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
8003
8004         /* Remove from any persistent group */
8005         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
8006                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
8007                         continue;
8008                 if (!iface_addr)
8009                         wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0);
8010                 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr);
8011         }
8012
8013         /* Remove from any operating group */
8014         for (w = wpa_s->global->ifaces; w; w = w->next)
8015                 wpas_p2p_remove_client_go(w, peer, iface_addr);
8016 }
8017
8018
8019 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
8020 {
8021         struct wpa_supplicant *wpa_s = eloop_ctx;
8022         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
8023 }
8024
8025
8026 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
8027 {
8028         struct wpa_supplicant *wpa_s = eloop_ctx;
8029
8030         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
8031         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
8032 }
8033
8034
8035 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
8036                                         struct wpa_ssid *ssid)
8037 {
8038         struct wpa_supplicant *iface;
8039
8040         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8041                 if (!iface->current_ssid ||
8042                     iface->current_ssid->frequency == freq ||
8043                     (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
8044                      !iface->current_ssid->p2p_group))
8045                         continue;
8046
8047                 /* Remove the connection with least priority */
8048                 if (!wpas_is_p2p_prioritized(iface)) {
8049                         /* STA connection has priority over existing
8050                          * P2P connection, so remove the interface. */
8051                         wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
8052                         eloop_register_timeout(0, 0,
8053                                                wpas_p2p_group_freq_conflict,
8054                                                iface, NULL);
8055                         /* If connection in progress is P2P connection, do not
8056                          * proceed for the connection. */
8057                         if (wpa_s == iface)
8058                                 return -1;
8059                         else
8060                                 return 0;
8061                 } else {
8062                         /* P2P connection has priority, disable the STA network
8063                          */
8064                         wpa_supplicant_disable_network(wpa_s->global->ifaces,
8065                                                        ssid);
8066                         wpa_msg(wpa_s->global->ifaces, MSG_INFO,
8067                                 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
8068                         os_memset(wpa_s->global->ifaces->pending_bssid, 0,
8069                                   ETH_ALEN);
8070                         /* If P2P connection is in progress, continue
8071                          * connecting...*/
8072                         if (wpa_s == iface)
8073                                 return 0;
8074                         else
8075                                 return -1;
8076                 }
8077         }
8078
8079         return 0;
8080 }
8081
8082
8083 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
8084 {
8085         struct wpa_ssid *ssid = wpa_s->current_ssid;
8086
8087         if (ssid == NULL || !ssid->p2p_group)
8088                 return 0;
8089
8090         if (wpa_s->p2p_last_4way_hs_fail &&
8091             wpa_s->p2p_last_4way_hs_fail == ssid) {
8092                 u8 go_dev_addr[ETH_ALEN];
8093                 struct wpa_ssid *persistent;
8094
8095                 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
8096                                               ssid->ssid,
8097                                               ssid->ssid_len) <= 0) {
8098                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
8099                         goto disconnect;
8100                 }
8101
8102                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
8103                         MACSTR, MAC2STR(go_dev_addr));
8104                 persistent = wpas_p2p_get_persistent(wpa_s->parent, go_dev_addr,
8105                                                      ssid->ssid,
8106                                                      ssid->ssid_len);
8107                 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
8108                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
8109                         goto disconnect;
8110                 }
8111                 wpa_msg_global(wpa_s->parent, MSG_INFO,
8112                                P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
8113                                persistent->id);
8114         disconnect:
8115                 wpa_s->p2p_last_4way_hs_fail = NULL;
8116                 /*
8117                  * Remove the group from a timeout to avoid issues with caller
8118                  * continuing to use the interface if this is on a P2P group
8119                  * interface.
8120                  */
8121                 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
8122                                        wpa_s, NULL);
8123                 return 1;
8124         }
8125
8126         wpa_s->p2p_last_4way_hs_fail = ssid;
8127         return 0;
8128 }
8129
8130
8131 #ifdef CONFIG_WPS_NFC
8132
8133 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
8134                                              struct wpabuf *p2p)
8135 {
8136         struct wpabuf *ret;
8137         size_t wsc_len;
8138
8139         if (p2p == NULL) {
8140                 wpabuf_free(wsc);
8141                 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
8142                 return NULL;
8143         }
8144
8145         wsc_len = wsc ? wpabuf_len(wsc) : 0;
8146         ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
8147         if (ret == NULL) {
8148                 wpabuf_free(wsc);
8149                 wpabuf_free(p2p);
8150                 return NULL;
8151         }
8152
8153         wpabuf_put_be16(ret, wsc_len);
8154         if (wsc)
8155                 wpabuf_put_buf(ret, wsc);
8156         wpabuf_put_be16(ret, wpabuf_len(p2p));
8157         wpabuf_put_buf(ret, p2p);
8158
8159         wpabuf_free(wsc);
8160         wpabuf_free(p2p);
8161         wpa_hexdump_buf(MSG_DEBUG,
8162                         "P2P: Generated NFC connection handover message", ret);
8163
8164         if (ndef && ret) {
8165                 struct wpabuf *tmp;
8166                 tmp = ndef_build_p2p(ret);
8167                 wpabuf_free(ret);
8168                 if (tmp == NULL) {
8169                         wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
8170                         return NULL;
8171                 }
8172                 ret = tmp;
8173         }
8174
8175         return ret;
8176 }
8177
8178
8179 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
8180                              struct wpa_ssid **ssid, u8 *go_dev_addr)
8181 {
8182         struct wpa_supplicant *iface;
8183
8184         if (go_dev_addr)
8185                 os_memset(go_dev_addr, 0, ETH_ALEN);
8186         if (ssid)
8187                 *ssid = NULL;
8188         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8189                 if (iface->wpa_state < WPA_ASSOCIATING ||
8190                     iface->current_ssid == NULL || iface->assoc_freq == 0 ||
8191                     !iface->current_ssid->p2p_group ||
8192                     iface->current_ssid->mode != WPAS_MODE_INFRA)
8193                         continue;
8194                 if (ssid)
8195                         *ssid = iface->current_ssid;
8196                 if (go_dev_addr)
8197                         os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
8198                 return iface->assoc_freq;
8199         }
8200         return 0;
8201 }
8202
8203
8204 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
8205                                           int ndef)
8206 {
8207         struct wpabuf *wsc, *p2p;
8208         struct wpa_ssid *ssid;
8209         u8 go_dev_addr[ETH_ALEN];
8210         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8211
8212         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
8213                 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
8214                 return NULL;
8215         }
8216
8217         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8218             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8219                            &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
8220                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
8221                 return NULL;
8222         }
8223
8224         if (cli_freq == 0) {
8225                 wsc = wps_build_nfc_handover_req_p2p(
8226                         wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
8227         } else
8228                 wsc = NULL;
8229         p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
8230                                          go_dev_addr, ssid ? ssid->ssid : NULL,
8231                                          ssid ? ssid->ssid_len : 0);
8232
8233         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8234 }
8235
8236
8237 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
8238                                           int ndef, int tag)
8239 {
8240         struct wpabuf *wsc, *p2p;
8241         struct wpa_ssid *ssid;
8242         u8 go_dev_addr[ETH_ALEN];
8243         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8244
8245         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8246                 return NULL;
8247
8248         if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8249             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8250                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8251                 return NULL;
8252
8253         if (cli_freq == 0) {
8254                 wsc = wps_build_nfc_handover_sel_p2p(
8255                         wpa_s->parent->wps,
8256                         tag ? wpa_s->conf->wps_nfc_dev_pw_id :
8257                         DEV_PW_NFC_CONNECTION_HANDOVER,
8258                         wpa_s->conf->wps_nfc_dh_pubkey,
8259                         tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
8260         } else
8261                 wsc = NULL;
8262         p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
8263                                          go_dev_addr, ssid ? ssid->ssid : NULL,
8264                                          ssid ? ssid->ssid_len : 0);
8265
8266         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8267 }
8268
8269
8270 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
8271                                    struct p2p_nfc_params *params)
8272 {
8273         wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
8274                    "connection handover (freq=%d)",
8275                    params->go_freq);
8276
8277         if (params->go_freq && params->go_ssid_len) {
8278                 wpa_s->p2p_wps_method = WPS_NFC;
8279                 wpa_s->pending_join_wps_method = WPS_NFC;
8280                 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
8281                 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
8282                           ETH_ALEN);
8283                 return wpas_p2p_join_start(wpa_s, params->go_freq,
8284                                            params->go_ssid,
8285                                            params->go_ssid_len);
8286         }
8287
8288         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8289                                 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
8290                                 params->go_freq, wpa_s->p2p_go_vht_center_freq2,
8291                                 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth);
8292 }
8293
8294
8295 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
8296                                   struct p2p_nfc_params *params, int tag)
8297 {
8298         int res, persistent;
8299         struct wpa_ssid *ssid;
8300
8301         wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
8302                    "connection handover");
8303         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
8304                 ssid = wpa_s->current_ssid;
8305                 if (ssid == NULL)
8306                         continue;
8307                 if (ssid->mode != WPAS_MODE_P2P_GO)
8308                         continue;
8309                 if (wpa_s->ap_iface == NULL)
8310                         continue;
8311                 break;
8312         }
8313         if (wpa_s == NULL) {
8314                 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
8315                 return -1;
8316         }
8317
8318         if (wpa_s->parent->p2p_oob_dev_pw_id !=
8319             DEV_PW_NFC_CONNECTION_HANDOVER &&
8320             !wpa_s->parent->p2p_oob_dev_pw) {
8321                 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
8322                 return -1;
8323         }
8324         res = wpas_ap_wps_add_nfc_pw(
8325                 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
8326                 wpa_s->parent->p2p_oob_dev_pw,
8327                 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
8328                 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
8329         if (res)
8330                 return res;
8331
8332         if (!tag) {
8333                 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
8334                 return 0;
8335         }
8336
8337         if (!params->peer ||
8338             !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
8339                 return 0;
8340
8341         wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
8342                    " to join", MAC2STR(params->peer->p2p_device_addr));
8343
8344         wpa_s->global->p2p_invite_group = wpa_s;
8345         persistent = ssid->p2p_persistent_group &&
8346                 wpas_p2p_get_persistent(wpa_s->parent,
8347                                         params->peer->p2p_device_addr,
8348                                         ssid->ssid, ssid->ssid_len);
8349         wpa_s->parent->pending_invite_ssid_id = -1;
8350
8351         return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
8352                           P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
8353                           ssid->ssid, ssid->ssid_len, ssid->frequency,
8354                           wpa_s->global->p2p_dev_addr, persistent, 0,
8355                           wpa_s->parent->p2p_oob_dev_pw_id);
8356 }
8357
8358
8359 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
8360                                     struct p2p_nfc_params *params,
8361                                     int forced_freq)
8362 {
8363         wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
8364                    "connection handover");
8365         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8366                                 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
8367                                 forced_freq, wpa_s->p2p_go_vht_center_freq2,
8368                                 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth);
8369 }
8370
8371
8372 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
8373                                     struct p2p_nfc_params *params,
8374                                     int forced_freq)
8375 {
8376         int res;
8377
8378         wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
8379                    "connection handover");
8380         res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8381                                WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
8382                                forced_freq, wpa_s->p2p_go_vht_center_freq2,
8383                                -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth);
8384         if (res)
8385                 return res;
8386
8387         res = wpas_p2p_listen(wpa_s, 60);
8388         if (res) {
8389                 p2p_unauthorize(wpa_s->global->p2p,
8390                                 params->peer->p2p_device_addr);
8391         }
8392
8393         return res;
8394 }
8395
8396
8397 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
8398                                             const struct wpabuf *data,
8399                                             int sel, int tag, int forced_freq)
8400 {
8401         const u8 *pos, *end;
8402         u16 len, id;
8403         struct p2p_nfc_params params;
8404         int res;
8405
8406         os_memset(&params, 0, sizeof(params));
8407         params.sel = sel;
8408
8409         wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
8410
8411         pos = wpabuf_head(data);
8412         end = pos + wpabuf_len(data);
8413
8414         if (end - pos < 2) {
8415                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
8416                            "attributes");
8417                 return -1;
8418         }
8419         len = WPA_GET_BE16(pos);
8420         pos += 2;
8421         if (len > end - pos) {
8422                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
8423                            "attributes");
8424                 return -1;
8425         }
8426         params.wsc_attr = pos;
8427         params.wsc_len = len;
8428         pos += len;
8429
8430         if (end - pos < 2) {
8431                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
8432                            "attributes");
8433                 return -1;
8434         }
8435         len = WPA_GET_BE16(pos);
8436         pos += 2;
8437         if (len > end - pos) {
8438                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
8439                            "attributes");
8440                 return -1;
8441         }
8442         params.p2p_attr = pos;
8443         params.p2p_len = len;
8444         pos += len;
8445
8446         wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
8447                     params.wsc_attr, params.wsc_len);
8448         wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
8449                     params.p2p_attr, params.p2p_len);
8450         if (pos < end) {
8451                 wpa_hexdump(MSG_DEBUG,
8452                             "P2P: Ignored extra data after P2P attributes",
8453                             pos, end - pos);
8454         }
8455
8456         res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
8457         if (res)
8458                 return res;
8459
8460         if (params.next_step == NO_ACTION)
8461                 return 0;
8462
8463         if (params.next_step == BOTH_GO) {
8464                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
8465                         MAC2STR(params.peer->p2p_device_addr));
8466                 return 0;
8467         }
8468
8469         if (params.next_step == PEER_CLIENT) {
8470                 if (!is_zero_ether_addr(params.go_dev_addr)) {
8471                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8472                                 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
8473                                 " ssid=\"%s\"",
8474                                 MAC2STR(params.peer->p2p_device_addr),
8475                                 params.go_freq,
8476                                 MAC2STR(params.go_dev_addr),
8477                                 wpa_ssid_txt(params.go_ssid,
8478                                              params.go_ssid_len));
8479                 } else {
8480                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8481                                 "peer=" MACSTR " freq=%d",
8482                                 MAC2STR(params.peer->p2p_device_addr),
8483                                 params.go_freq);
8484                 }
8485                 return 0;
8486         }
8487
8488         if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
8489                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
8490                         MACSTR, MAC2STR(params.peer->p2p_device_addr));
8491                 return 0;
8492         }
8493
8494         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8495         wpa_s->p2p_oob_dev_pw = NULL;
8496
8497         if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
8498                 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
8499                            "received");
8500                 return -1;
8501         }
8502
8503         id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
8504         wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
8505         wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
8506                     params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8507         os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
8508                   params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8509         wpa_s->p2p_peer_oob_pk_hash_known = 1;
8510
8511         if (tag) {
8512                 if (id < 0x10) {
8513                         wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
8514                                    "peer OOB Device Password Id %u", id);
8515                         return -1;
8516                 }
8517                 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
8518                            "Device Password Id %u", id);
8519                 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
8520                                 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8521                                 params.oob_dev_pw_len -
8522                                 WPS_OOB_PUBKEY_HASH_LEN - 2);
8523                 wpa_s->p2p_oob_dev_pw_id = id;
8524                 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
8525                         params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8526                         params.oob_dev_pw_len -
8527                         WPS_OOB_PUBKEY_HASH_LEN - 2);
8528                 if (wpa_s->p2p_oob_dev_pw == NULL)
8529                         return -1;
8530
8531                 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8532                     wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8533                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8534                         return -1;
8535         } else {
8536                 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
8537                            "without Device Password");
8538                 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
8539         }
8540
8541         switch (params.next_step) {
8542         case NO_ACTION:
8543         case BOTH_GO:
8544         case PEER_CLIENT:
8545                 /* already covered above */
8546                 return 0;
8547         case JOIN_GROUP:
8548                 return wpas_p2p_nfc_join_group(wpa_s, &params);
8549         case AUTH_JOIN:
8550                 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
8551         case INIT_GO_NEG:
8552                 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
8553         case RESP_GO_NEG:
8554                 /* TODO: use own OOB Dev Pw */
8555                 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
8556         }
8557
8558         return -1;
8559 }
8560
8561
8562 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
8563                              const struct wpabuf *data, int forced_freq)
8564 {
8565         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8566                 return -1;
8567
8568         return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
8569 }
8570
8571
8572 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
8573                                  const struct wpabuf *req,
8574                                  const struct wpabuf *sel, int forced_freq)
8575 {
8576         struct wpabuf *tmp;
8577         int ret;
8578
8579         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8580                 return -1;
8581
8582         wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
8583
8584         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
8585                           wpabuf_head(req), wpabuf_len(req));
8586         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
8587                           wpabuf_head(sel), wpabuf_len(sel));
8588         if (forced_freq)
8589                 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
8590         tmp = ndef_parse_p2p(init ? sel : req);
8591         if (tmp == NULL) {
8592                 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
8593                 return -1;
8594         }
8595
8596         ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
8597                                                forced_freq);
8598         wpabuf_free(tmp);
8599
8600         return ret;
8601 }
8602
8603
8604 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
8605 {
8606         const u8 *if_addr;
8607         int go_intent = wpa_s->conf->p2p_go_intent;
8608         struct wpa_supplicant *iface;
8609
8610         if (wpa_s->global->p2p == NULL)
8611                 return -1;
8612
8613         if (!enabled) {
8614                 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
8615                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
8616                 {
8617                         if (!iface->ap_iface)
8618                                 continue;
8619                         hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
8620                 }
8621                 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
8622                                                  0, NULL);
8623                 if (wpa_s->p2p_nfc_tag_enabled)
8624                         wpas_p2p_remove_pending_group_interface(wpa_s);
8625                 wpa_s->p2p_nfc_tag_enabled = 0;
8626                 return 0;
8627         }
8628
8629         if (wpa_s->global->p2p_disabled)
8630                 return -1;
8631
8632         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
8633             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
8634             wpa_s->conf->wps_nfc_dev_pw == NULL ||
8635             wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
8636                 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
8637                            "to allow static handover cases");
8638                 return -1;
8639         }
8640
8641         wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
8642
8643         wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8644         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8645         wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8646         if (wpa_s->p2p_oob_dev_pw == NULL)
8647                 return -1;
8648         wpa_s->p2p_peer_oob_pk_hash_known = 0;
8649
8650         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
8651             wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
8652                 /*
8653                  * P2P Group Interface present and the command came on group
8654                  * interface, so enable the token for the current interface.
8655                  */
8656                 wpa_s->create_p2p_iface = 0;
8657         } else {
8658                 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
8659         }
8660
8661         if (wpa_s->create_p2p_iface) {
8662                 enum wpa_driver_if_type iftype;
8663                 /* Prepare to add a new interface for the group */
8664                 iftype = WPA_IF_P2P_GROUP;
8665                 if (go_intent == 15)
8666                         iftype = WPA_IF_P2P_GO;
8667                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
8668                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
8669                                    "interface for the group");
8670                         return -1;
8671                 }
8672
8673                 if_addr = wpa_s->pending_interface_addr;
8674         } else
8675                 if_addr = wpa_s->own_addr;
8676
8677         wpa_s->p2p_nfc_tag_enabled = enabled;
8678
8679         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8680                 struct hostapd_data *hapd;
8681                 if (iface->ap_iface == NULL)
8682                         continue;
8683                 hapd = iface->ap_iface->bss[0];
8684                 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
8685                 hapd->conf->wps_nfc_dh_pubkey =
8686                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
8687                 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
8688                 hapd->conf->wps_nfc_dh_privkey =
8689                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
8690                 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
8691                 hapd->conf->wps_nfc_dev_pw =
8692                         wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8693                 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8694
8695                 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
8696                         wpa_dbg(iface, MSG_DEBUG,
8697                                 "P2P: Failed to enable NFC Tag for GO");
8698                 }
8699         }
8700         p2p_set_authorized_oob_dev_pw_id(
8701                 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
8702                 if_addr);
8703
8704         return 0;
8705 }
8706
8707 #endif /* CONFIG_WPS_NFC */
8708
8709
8710 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
8711                                              struct wpa_used_freq_data *freqs,
8712                                              unsigned int num)
8713 {
8714         u8 curr_chan, cand, chan;
8715         unsigned int i;
8716
8717         /*
8718          * If possible, optimize the Listen channel to be a channel that is
8719          * already used by one of the other interfaces.
8720          */
8721         if (!wpa_s->conf->p2p_optimize_listen_chan)
8722                 return;
8723
8724         if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
8725                 return;
8726
8727         curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
8728         for (i = 0, cand = 0; i < num; i++) {
8729                 ieee80211_freq_to_chan(freqs[i].freq, &chan);
8730                 if (curr_chan == chan) {
8731                         cand = 0;
8732                         break;
8733                 }
8734
8735                 if (chan == 1 || chan == 6 || chan == 11)
8736                         cand = chan;
8737         }
8738
8739         if (cand) {
8740                 wpa_dbg(wpa_s, MSG_DEBUG,
8741                         "P2P: Update Listen channel to %u based on operating channel",
8742                         cand);
8743                 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
8744         }
8745 }
8746
8747
8748 static int wpas_p2p_move_go_csa(struct wpa_supplicant *wpa_s)
8749 {
8750         struct hostapd_config *conf;
8751         struct p2p_go_neg_results params;
8752         struct csa_settings csa_settings;
8753         struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8754         int old_freq = current_ssid->frequency;
8755         int ret;
8756
8757         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) {
8758                 wpa_dbg(wpa_s, MSG_DEBUG, "CSA is not enabled");
8759                 return -1;
8760         }
8761
8762         /*
8763          * TODO: This function may not always work correctly. For example,
8764          * when we have a running GO and a BSS on a DFS channel.
8765          */
8766         if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, 0, 0, NULL)) {
8767                 wpa_dbg(wpa_s, MSG_DEBUG,
8768                         "P2P CSA: Failed to select new frequency for GO");
8769                 return -1;
8770         }
8771
8772         if (current_ssid->frequency == params.freq) {
8773                 wpa_dbg(wpa_s, MSG_DEBUG,
8774                         "P2P CSA: Selected same frequency - not moving GO");
8775                 return 0;
8776         }
8777
8778         conf = hostapd_config_defaults();
8779         if (!conf) {
8780                 wpa_dbg(wpa_s, MSG_DEBUG,
8781                         "P2P CSA: Failed to allocate default config");
8782                 return -1;
8783         }
8784
8785         current_ssid->frequency = params.freq;
8786         if (wpa_supplicant_conf_ap_ht(wpa_s, current_ssid, conf)) {
8787                 wpa_dbg(wpa_s, MSG_DEBUG,
8788                         "P2P CSA: Failed to create new GO config");
8789                 ret = -1;
8790                 goto out;
8791         }
8792
8793         if (conf->hw_mode != wpa_s->ap_iface->current_mode->mode) {
8794                 wpa_dbg(wpa_s, MSG_DEBUG,
8795                         "P2P CSA: CSA to a different band is not supported");
8796                 ret = -1;
8797                 goto out;
8798         }
8799
8800         os_memset(&csa_settings, 0, sizeof(csa_settings));
8801         csa_settings.cs_count = P2P_GO_CSA_COUNT;
8802         csa_settings.block_tx = P2P_GO_CSA_BLOCK_TX;
8803         csa_settings.freq_params.freq = params.freq;
8804         csa_settings.freq_params.sec_channel_offset = conf->secondary_channel;
8805         csa_settings.freq_params.ht_enabled = conf->ieee80211n;
8806         csa_settings.freq_params.bandwidth = conf->secondary_channel ? 40 : 20;
8807
8808         if (conf->ieee80211ac) {
8809                 int freq1 = 0, freq2 = 0;
8810                 u8 chan, opclass;
8811
8812                 if (ieee80211_freq_to_channel_ext(params.freq,
8813                                                   conf->secondary_channel,
8814                                                   conf->vht_oper_chwidth,
8815                                                   &opclass, &chan) ==
8816                     NUM_HOSTAPD_MODES) {
8817                         wpa_printf(MSG_ERROR, "P2P CSA: Bad freq");
8818                         ret = -1;
8819                         goto out;
8820                 }
8821
8822                 if (conf->vht_oper_centr_freq_seg0_idx)
8823                         freq1 = ieee80211_chan_to_freq(
8824                                 NULL, opclass,
8825                                 conf->vht_oper_centr_freq_seg0_idx);
8826
8827                 if (conf->vht_oper_centr_freq_seg1_idx)
8828                         freq2 = ieee80211_chan_to_freq(
8829                                 NULL, opclass,
8830                                 conf->vht_oper_centr_freq_seg1_idx);
8831
8832                 if (freq1 < 0 || freq2 < 0) {
8833                         wpa_dbg(wpa_s, MSG_DEBUG,
8834                                 "P2P CSA: Selected invalid VHT center freqs");
8835                         ret = -1;
8836                         goto out;
8837                 }
8838
8839                 csa_settings.freq_params.vht_enabled = conf->ieee80211ac;
8840                 csa_settings.freq_params.center_freq1 = freq1;
8841                 csa_settings.freq_params.center_freq2 = freq2;
8842
8843                 switch (conf->vht_oper_chwidth) {
8844                 case VHT_CHANWIDTH_80MHZ:
8845                 case VHT_CHANWIDTH_80P80MHZ:
8846                         csa_settings.freq_params.bandwidth = 80;
8847                         break;
8848                 case VHT_CHANWIDTH_160MHZ:
8849                         csa_settings.freq_params.bandwidth = 160;
8850                         break;
8851                 }
8852         }
8853
8854         ret = ap_switch_channel(wpa_s, &csa_settings);
8855 out:
8856         current_ssid->frequency = old_freq;
8857         hostapd_config_free(conf);
8858         return ret;
8859 }
8860
8861
8862 static void wpas_p2p_move_go_no_csa(struct wpa_supplicant *wpa_s)
8863 {
8864         struct p2p_go_neg_results params;
8865         struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8866
8867         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
8868
8869         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz",
8870                 current_ssid->frequency);
8871
8872         /* Stop the AP functionality */
8873         /* TODO: Should do this in a way that does not indicated to possible
8874          * P2P Clients in the group that the group is terminated. */
8875         wpa_supplicant_ap_deinit(wpa_s);
8876
8877         /* Reselect the GO frequency */
8878         if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, 0, 0, NULL)) {
8879                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Failed to reselect freq");
8880                 wpas_p2p_group_delete(wpa_s,
8881                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8882                 return;
8883         }
8884         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New freq selected for the GO (%u MHz)",
8885                 params.freq);
8886
8887         if (params.freq &&
8888             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
8889                 wpa_printf(MSG_DEBUG,
8890                            "P2P: Selected freq (%u MHz) is not valid for P2P",
8891                            params.freq);
8892                 wpas_p2p_group_delete(wpa_s,
8893                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8894                 return;
8895         }
8896
8897         /* Update the frequency */
8898         current_ssid->frequency = params.freq;
8899         wpa_s->connect_without_scan = current_ssid;
8900         wpa_s->reassociate = 1;
8901         wpa_s->disconnected = 0;
8902         wpa_supplicant_req_scan(wpa_s, 0, 0);
8903 }
8904
8905
8906 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx)
8907 {
8908         struct wpa_supplicant *wpa_s = eloop_ctx;
8909
8910         if (!wpa_s->ap_iface || !wpa_s->current_ssid)
8911                 return;
8912
8913         wpas_p2p_go_update_common_freqs(wpa_s);
8914
8915         /* Do not move GO in the middle of a CSA */
8916         if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
8917                 wpa_printf(MSG_DEBUG,
8918                            "P2P: CSA is in progress - not moving GO");
8919                 return;
8920         }
8921
8922         /*
8923          * First, try a channel switch flow. If it is not supported or fails,
8924          * take down the GO and bring it up again.
8925          */
8926         if (wpas_p2p_move_go_csa(wpa_s) < 0)
8927                 wpas_p2p_move_go_no_csa(wpa_s);
8928 }
8929
8930
8931 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx)
8932 {
8933         struct wpa_supplicant *wpa_s = eloop_ctx;
8934         struct wpa_used_freq_data *freqs = NULL;
8935         unsigned int num = wpa_s->num_multichan_concurrent;
8936
8937         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
8938         if (!freqs)
8939                 return;
8940
8941         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
8942
8943         /* Previous attempt to move a GO was not possible -- try again. */
8944         wpas_p2p_consider_moving_gos(wpa_s, freqs, num,
8945                                      WPAS_P2P_CHANNEL_UPDATE_ANY);
8946
8947         os_free(freqs);
8948 }
8949
8950
8951 /*
8952  * Consider moving a GO from its currently used frequency:
8953  * 1. It is possible that due to regulatory consideration the frequency
8954  *    can no longer be used and there is a need to evacuate the GO.
8955  * 2. It is possible that due to MCC considerations, it would be preferable
8956  *    to move the GO to a channel that is currently used by some other
8957  *    station interface.
8958  *
8959  * In case a frequency that became invalid is once again valid, cancel a
8960  * previously initiated GO frequency change.
8961  */
8962 static void wpas_p2p_consider_moving_one_go(struct wpa_supplicant *wpa_s,
8963                                             struct wpa_used_freq_data *freqs,
8964                                             unsigned int num)
8965 {
8966         unsigned int i, invalid_freq = 0, policy_move = 0, flags = 0;
8967         unsigned int timeout;
8968         int freq;
8969
8970         wpas_p2p_go_update_common_freqs(wpa_s);
8971
8972         freq = wpa_s->current_ssid->frequency;
8973         for (i = 0, invalid_freq = 0; i < num; i++) {
8974                 if (freqs[i].freq == freq) {
8975                         flags = freqs[i].flags;
8976
8977                         /* The channel is invalid, must change it */
8978                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
8979                                 wpa_dbg(wpa_s, MSG_DEBUG,
8980                                         "P2P: Freq=%d MHz no longer valid for GO",
8981                                         freq);
8982                                 invalid_freq = 1;
8983                         }
8984                 } else if (freqs[i].flags == 0) {
8985                         /* Freq is not used by any other station interface */
8986                         continue;
8987                 } else if (!p2p_supported_freq(wpa_s->global->p2p,
8988                                                freqs[i].freq)) {
8989                         /* Freq is not valid for P2P use cases */
8990                         continue;
8991                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
8992                            P2P_GO_FREQ_MOVE_SCM) {
8993                         policy_move = 1;
8994                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
8995                            P2P_GO_FREQ_MOVE_SCM_PEER_SUPPORTS &&
8996                            wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
8997                         policy_move = 1;
8998                 } else if ((wpa_s->conf->p2p_go_freq_change_policy ==
8999                             P2P_GO_FREQ_MOVE_SCM_ECSA) &&
9000                            wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
9001                         if (!p2p_get_group_num_members(wpa_s->p2p_group)) {
9002                                 policy_move = 1;
9003                         } else if ((wpa_s->drv_flags &
9004                                     WPA_DRIVER_FLAGS_AP_CSA) &&
9005                                    wpas_p2p_go_clients_support_ecsa(wpa_s)) {
9006                                 u8 chan;
9007
9008                                 /*
9009                                  * We do not support CSA between bands, so move
9010                                  * GO only within the same band.
9011                                  */
9012                                 if (wpa_s->ap_iface->current_mode->mode ==
9013                                     ieee80211_freq_to_chan(freqs[i].freq,
9014                                                            &chan))
9015                                         policy_move = 1;
9016                         }
9017                 }
9018         }
9019
9020         wpa_dbg(wpa_s, MSG_DEBUG,
9021                 "P2P: GO move: invalid_freq=%u, policy_move=%u, flags=0x%X",
9022                 invalid_freq, policy_move, flags);
9023
9024         /*
9025          * The channel is valid, or we are going to have a policy move, so
9026          * cancel timeout.
9027          */
9028         if (!invalid_freq || policy_move) {
9029                 wpa_dbg(wpa_s, MSG_DEBUG,
9030                         "P2P: Cancel a GO move from freq=%d MHz", freq);
9031                 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9032
9033                 if (wpas_p2p_in_progress(wpa_s)) {
9034                         wpa_dbg(wpa_s, MSG_DEBUG,
9035                                 "P2P: GO move: policy CS is not allowed - setting timeout to re-consider GO move");
9036                         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go,
9037                                              wpa_s, NULL);
9038                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9039                                                wpas_p2p_reconsider_moving_go,
9040                                                wpa_s, NULL);
9041                         return;
9042                 }
9043         }
9044
9045         if (!invalid_freq && (!policy_move || flags != 0)) {
9046                 wpa_dbg(wpa_s, MSG_DEBUG,
9047                         "P2P: Not initiating a GO frequency change");
9048                 return;
9049         }
9050
9051         /*
9052          * Do not consider moving GO if it is in the middle of a CSA. When the
9053          * CSA is finished this flow should be retriggered.
9054          */
9055         if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
9056                 wpa_dbg(wpa_s, MSG_DEBUG,
9057                         "P2P: Not initiating a GO frequency change - CSA is in progress");
9058                 return;
9059         }
9060
9061         if (invalid_freq && !wpas_p2p_disallowed_freq(wpa_s->global, freq))
9062                 timeout = P2P_GO_FREQ_CHANGE_TIME;
9063         else
9064                 timeout = 0;
9065
9066         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz in %d secs",
9067                 freq, timeout);
9068         eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9069         eloop_register_timeout(timeout, 0, wpas_p2p_move_go, wpa_s, NULL);
9070 }
9071
9072
9073 static void wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
9074                                          struct wpa_used_freq_data *freqs,
9075                                          unsigned int num,
9076                                          enum wpas_p2p_channel_update_trig trig)
9077 {
9078         struct wpa_supplicant *ifs;
9079
9080         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, ELOOP_ALL_CTX,
9081                              NULL);
9082
9083         /*
9084          * Travers all the radio interfaces, and for each GO interface, check
9085          * if there is a need to move the GO from the frequency it is using,
9086          * or in case the frequency is valid again, cancel the evacuation flow.
9087          */
9088         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
9089                          radio_list) {
9090                 if (ifs->current_ssid == NULL ||
9091                     ifs->current_ssid->mode != WPAS_MODE_P2P_GO)
9092                         continue;
9093
9094                 /*
9095                  * The GO was just started or completed channel switch, no need
9096                  * to move it.
9097                  */
9098                 if (wpa_s == ifs &&
9099                     (trig == WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE ||
9100                      trig == WPAS_P2P_CHANNEL_UPDATE_CS)) {
9101                         wpa_dbg(wpa_s, MSG_DEBUG,
9102                                 "P2P: GO move - schedule re-consideration");
9103                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9104                                                wpas_p2p_reconsider_moving_go,
9105                                                wpa_s, NULL);
9106                         continue;
9107                 }
9108
9109                 wpas_p2p_consider_moving_one_go(ifs, freqs, num);
9110         }
9111 }
9112
9113
9114 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
9115 {
9116         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
9117                 return;
9118
9119         wpas_p2p_update_channel_list(wpa_s,
9120                                      WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE);
9121 }
9122
9123
9124 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
9125 {
9126         if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
9127                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
9128                         "the management interface is being removed");
9129                 wpas_p2p_deinit_global(wpa_s->global);
9130         }
9131 }
9132
9133
9134 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
9135 {
9136         if (wpa_s->ap_iface->bss)
9137                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
9138         wpas_p2p_group_deinit(wpa_s);
9139 }