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/p2p_hostapd.h"
  24 #include "eapol_supp/eapol_supp_sm.h"
  25 #include "rsn_supp/wpa.h"
  26 #include "wpa_supplicant_i.h"
  27 #include "driver_i.h"
  28 #include "ap.h"
  29 #include "config_ssid.h"
  30 #include "config.h"
  31 #include "notify.h"
  32 #include "scan.h"
  33 #include "bss.h"
  34 #include "offchannel.h"
  35 #include "wps_supplicant.h"
  36 #include "p2p_supplicant.h"
  37 #include "wifi_display.h"
  38
  39
  40 /*
  41  * How many times to try to scan to find the GO before giving up on join
  42  * request.
  43  */
  44 #define P2P_MAX_JOIN_SCAN_ATTEMPTS 10
  45
  46 #define P2P_AUTO_PD_SCAN_ATTEMPTS 5
  47
  48 #ifndef P2P_MAX_CLIENT_IDLE
  49 /*
  50  * How many seconds to try to reconnect to the GO when connection in P2P client
  51  * role has been lost.
  52  */
  53 #define P2P_MAX_CLIENT_IDLE 10
  54 #endif /* P2P_MAX_CLIENT_IDLE */
  55
  56 #ifndef P2P_MAX_INITIAL_CONN_WAIT
  57 /*
  58  * How many seconds to wait for initial 4-way handshake to get completed after
  59  * WPS provisioning step.
  60  */
  61 #define P2P_MAX_INITIAL_CONN_WAIT 10
  62 #endif /* P2P_MAX_INITIAL_CONN_WAIT */
  63
  64 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO
  65 /*
  66  * How many seconds to wait for initial 4-way handshake to get completed after
  67  * WPS provisioning step on the GO. This controls the extra time the P2P
  68  * operation is considered to be in progress (e.g., to delay other scans) after
  69  * WPS provisioning has been completed on the GO during group formation.
  70  */
  71 #define P2P_MAX_INITIAL_CONN_WAIT_GO 10
  72 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO */
  73
  74 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE
  75 /*
  76  * How many seconds to wait for initial 4-way handshake to get completed after
  77  * re-invocation of a persistent group on the GO when the client is expected
  78  * to connect automatically (no user interaction).
  79  */
  80 #define P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 15
  81 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE */
  82
  83 #ifndef P2P_CONCURRENT_SEARCH_DELAY
  84 #define P2P_CONCURRENT_SEARCH_DELAY 500
  85 #endif /* P2P_CONCURRENT_SEARCH_DELAY */
  86
  87 #define P2P_MGMT_DEVICE_PREFIX          "p2p-dev-"
  88
  89 enum p2p_group_removal_reason {
  90         P2P_GROUP_REMOVAL_UNKNOWN,
  91         P2P_GROUP_REMOVAL_SILENT,
  92         P2P_GROUP_REMOVAL_FORMATION_FAILED,
  93         P2P_GROUP_REMOVAL_REQUESTED,
  94         P2P_GROUP_REMOVAL_IDLE_TIMEOUT,
  95         P2P_GROUP_REMOVAL_UNAVAILABLE,
  96         P2P_GROUP_REMOVAL_GO_ENDING_SESSION,
  97         P2P_GROUP_REMOVAL_PSK_FAILURE,
  98         P2P_GROUP_REMOVAL_FREQ_CONFLICT
  99 };
 100
 101
 102 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
 103 static struct wpa_supplicant *
 104 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
 105                          int go);
 106 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s);
 107 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
 108                                    const u8 *ssid, size_t ssid_len);
 109 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
 110 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
 111                          const u8 *dev_addr, enum p2p_wps_method wps_method,
 112                          int auto_join, const u8 *ssid, size_t ssid_len);
 113 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
 114 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
 115 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
 116 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
 117 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
 118                                              void *timeout_ctx);
 119 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx);
 120 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
 121                                         int group_added);
 122 static int wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s);
 123
 124
 125 /*
 126  * Get the number of concurrent channels that the HW can operate, but that are
 127  * currently not in use by any of the wpa_supplicant interfaces.
 128  */
 129 static int wpas_p2p_num_unused_channels(struct wpa_supplicant *wpa_s)
 130 {
 131         int *freqs;
 132         int num, unused;
 133
 134         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
 135         if (!freqs)
 136                 return -1;
 137
 138         num = get_shared_radio_freqs(wpa_s, freqs,
 139                                      wpa_s->num_multichan_concurrent);
 140         os_free(freqs);
 141
 142         unused = wpa_s->num_multichan_concurrent - num;
 143         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: num_unused_channels: %d", unused);
 144         return unused;
 145 }
 146
 147
 148 /*
 149  * Get the frequencies that are currently in use by one or more of the virtual
 150  * interfaces, and that are also valid for P2P operation.
 151  */
 152 static int wpas_p2p_valid_oper_freqs(struct wpa_supplicant *wpa_s,
 153                                      int *p2p_freqs, unsigned int len)
 154 {
 155         int *freqs;
 156         unsigned int num, i, j;
 157
 158         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
 159         if (!freqs)
 160                 return -1;
 161
 162         num = get_shared_radio_freqs(wpa_s, freqs,
 163                                      wpa_s->num_multichan_concurrent);
 164
 165         os_memset(p2p_freqs, 0, sizeof(int) * len);
 166
 167         for (i = 0, j = 0; i < num && j < len; i++) {
 168                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[i]))
 169                         p2p_freqs[j++] = freqs[i];
 170         }
 171
 172         os_free(freqs);
 173
 174         dump_freq_array(wpa_s, "valid for P2P", p2p_freqs, j);
 175
 176         return j;
 177 }
 178
 179
 180 static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s,
 181                                              int freq)
 182 {
 183         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 184                 return;
 185         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
 186             freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
 187             wpas_p2p_num_unused_channels(wpa_s) > 0) {
 188                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz due to p2p_ignore_shared_freq=1 configuration",
 189                            freq);
 190                 freq = 0;
 191         }
 192         p2p_set_own_freq_preference(wpa_s->global->p2p, freq);
 193 }
 194
 195
 196 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
 197                                       struct wpa_scan_results *scan_res)
 198 {
 199         size_t i;
 200
 201         if (wpa_s->p2p_scan_work) {
 202                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
 203                 wpa_s->p2p_scan_work = NULL;
 204                 radio_work_done(work);
 205         }
 206
 207         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 208                 return;
 209
 210         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
 211                    (int) scan_res->num);
 212
 213         for (i = 0; i < scan_res->num; i++) {
 214                 struct wpa_scan_res *bss = scan_res->res[i];
 215                 struct os_reltime time_tmp_age, entry_ts;
 216                 const u8 *ies;
 217                 size_t ies_len;
 218
 219                 time_tmp_age.sec = bss->age / 1000;
 220                 time_tmp_age.usec = (bss->age % 1000) * 1000;
 221                 os_reltime_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts);
 222
 223                 ies = (const u8 *) (bss + 1);
 224                 ies_len = bss->ie_len;
 225                 if (bss->beacon_ie_len > 0 &&
 226                     !wpa_scan_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
 227                     wpa_scan_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
 228                         wpa_printf(MSG_DEBUG, "P2P: Use P2P IE(s) from Beacon frame since no P2P IE(s) in Probe Response frames received for "
 229                                    MACSTR, MAC2STR(bss->bssid));
 230                         ies = ies + ies_len;
 231                         ies_len = bss->beacon_ie_len;
 232                 }
 233
 234
 235                 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
 236                                          bss->freq, &entry_ts, bss->level,
 237                                          ies, ies_len) > 0)
 238                         break;
 239         }
 240
 241         p2p_scan_res_handled(wpa_s->global->p2p);
 242 }
 243
 244
 245 static void wpas_p2p_trigger_scan_cb(struct wpa_radio_work *work, int deinit)
 246 {
 247         struct wpa_supplicant *wpa_s = work->wpa_s;
 248         struct wpa_driver_scan_params *params = work->ctx;
 249         int ret;
 250
 251         if (deinit) {
 252                 wpa_scan_free_params(params);
 253                 return;
 254         }
 255
 256         ret = wpa_drv_scan(wpa_s, params);
 257         wpa_scan_free_params(params);
 258         work->ctx = NULL;
 259         if (ret) {
 260                 radio_work_done(work);
 261                 return;
 262         }
 263
 264         os_get_reltime(&wpa_s->scan_trigger_time);
 265         wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 266         wpa_s->own_scan_requested = 1;
 267         wpa_s->p2p_scan_work = work;
 268 }
 269
 270
 271 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
 272                          unsigned int num_req_dev_types,
 273                          const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
 274 {
 275         struct wpa_supplicant *wpa_s = ctx;
 276         struct wpa_driver_scan_params *params = NULL;
 277         struct wpabuf *wps_ie, *ies;
 278         size_t ielen;
 279         u8 *n;
 280
 281         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 282                 return -1;
 283
 284         if (wpa_s->p2p_scan_work) {
 285                 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending");
 286                 return -1;
 287         }
 288
 289         params = os_zalloc(sizeof(*params));
 290         if (params == NULL)
 291                 return -1;
 292
 293         /* P2P Wildcard SSID */
 294         params->num_ssids = 1;
 295         n = os_malloc(P2P_WILDCARD_SSID_LEN);
 296         if (n == NULL)
 297                 goto fail;
 298         os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
 299         params->ssids[0].ssid = n;
 300         params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
 301
 302         wpa_s->wps->dev.p2p = 1;
 303         wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
 304                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
 305                                         num_req_dev_types, req_dev_types);
 306         if (wps_ie == NULL)
 307                 goto fail;
 308
 309         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
 310         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
 311         if (ies == NULL) {
 312                 wpabuf_free(wps_ie);
 313                 goto fail;
 314         }
 315         wpabuf_put_buf(ies, wps_ie);
 316         wpabuf_free(wps_ie);
 317
 318         p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);
 319
 320         params->p2p_probe = 1;
 321         n = os_malloc(wpabuf_len(ies));
 322         if (n == NULL) {
 323                 wpabuf_free(ies);
 324                 goto fail;
 325         }
 326         os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies));
 327         params->extra_ies = n;
 328         params->extra_ies_len = wpabuf_len(ies);
 329         wpabuf_free(ies);
 330
 331         switch (type) {
 332         case P2P_SCAN_SOCIAL:
 333                 params->freqs = os_malloc(4 * sizeof(int));
 334                 if (params->freqs == NULL)
 335                         goto fail;
 336                 params->freqs[0] = 2412;
 337                 params->freqs[1] = 2437;
 338                 params->freqs[2] = 2462;
 339                 params->freqs[3] = 0;
 340                 break;
 341         case P2P_SCAN_FULL:
 342                 break;
 343         case P2P_SCAN_SOCIAL_PLUS_ONE:
 344                 params->freqs = os_malloc(5 * sizeof(int));
 345                 if (params->freqs == NULL)
 346                         goto fail;
 347                 params->freqs[0] = 2412;
 348                 params->freqs[1] = 2437;
 349                 params->freqs[2] = 2462;
 350                 params->freqs[3] = freq;
 351                 params->freqs[4] = 0;
 352                 break;
 353         }
 354
 355         radio_remove_unstarted_work(wpa_s, "p2p-scan");
 356         if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb,
 357                            params) < 0)
 358                 goto fail;
 359         return 0;
 360
 361 fail:
 362         wpa_scan_free_params(params);
 363         return -1;
 364 }
 365
 366
 367 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 368 {
 369         switch (p2p_group_interface) {
 370         case P2P_GROUP_INTERFACE_PENDING:
 371                 return WPA_IF_P2P_GROUP;
 372         case P2P_GROUP_INTERFACE_GO:
 373                 return WPA_IF_P2P_GO;
 374         case P2P_GROUP_INTERFACE_CLIENT:
 375                 return WPA_IF_P2P_CLIENT;
 376         }
 377
 378         return WPA_IF_P2P_GROUP;
 379 }
 380
 381
 382 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 383                                                   const u8 *ssid,
 384                                                   size_t ssid_len, int *go)
 385 {
 386         struct wpa_ssid *s;
 387
 388         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 389                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 390                         if (s->disabled != 0 || !s->p2p_group ||
 391                             s->ssid_len != ssid_len ||
 392                             os_memcmp(ssid, s->ssid, ssid_len) != 0)
 393                                 continue;
 394                         if (s->mode == WPAS_MODE_P2P_GO &&
 395                             s != wpa_s->current_ssid)
 396                                 continue;
 397                         if (go)
 398                                 *go = s->mode == WPAS_MODE_P2P_GO;
 399                         return wpa_s;
 400                 }
 401         }
 402
 403         return NULL;
 404 }
 405
 406
 407 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 408                                  enum p2p_group_removal_reason removal_reason)
 409 {
 410         struct wpa_ssid *ssid;
 411         char *gtype;
 412         const char *reason;
 413
 414         ssid = wpa_s->current_ssid;
 415         if (ssid == NULL) {
 416                 /*
 417                  * The current SSID was not known, but there may still be a
 418                  * pending P2P group interface waiting for provisioning or a
 419                  * P2P group that is trying to reconnect.
 420                  */
 421                 ssid = wpa_s->conf->ssid;
 422                 while (ssid) {
 423                         if (ssid->p2p_group && ssid->disabled != 2)
 424                                 break;
 425                         ssid = ssid->next;
 426                 }
 427                 if (ssid == NULL &&
 428                         wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
 429                 {
 430                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 431                                    "not found");
 432                         return -1;
 433                 }
 434         }
 435         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 436                 gtype = "GO";
 437         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 438                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 439                 wpa_s->reassociate = 0;
 440                 wpa_s->disconnected = 1;
 441                 wpa_supplicant_deauthenticate(wpa_s,
 442                                               WLAN_REASON_DEAUTH_LEAVING);
 443                 gtype = "client";
 444         } else
 445                 gtype = "GO";
 446         if (wpa_s->cross_connect_in_use) {
 447                 wpa_s->cross_connect_in_use = 0;
 448                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 449                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 450                                wpa_s->ifname, wpa_s->cross_connect_uplink);
 451         }
 452         switch (removal_reason) {
 453         case P2P_GROUP_REMOVAL_REQUESTED:
 454                 reason = " reason=REQUESTED";
 455                 break;
 456         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 457                 reason = " reason=FORMATION_FAILED";
 458                 break;
 459         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 460                 reason = " reason=IDLE";
 461                 break;
 462         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 463                 reason = " reason=UNAVAILABLE";
 464                 break;
 465         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 466                 reason = " reason=GO_ENDING_SESSION";
 467                 break;
 468         case P2P_GROUP_REMOVAL_PSK_FAILURE:
 469                 reason = " reason=PSK_FAILURE";
 470                 break;
 471         case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
 472                 reason = " reason=FREQ_CONFLICT";
 473                 break;
 474         default:
 475                 reason = "";
 476                 break;
 477         }
 478         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 479                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 480                                P2P_EVENT_GROUP_REMOVED "%s %s%s",
 481                                wpa_s->ifname, gtype, reason);
 482         }
 483
 484         if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0)
 485                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout");
 486         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 487                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 488         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
 489                                  wpa_s->parent, NULL) > 0) {
 490                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
 491                            "timeout");
 492                 wpa_s->p2p_in_provisioning = 0;
 493         }
 494
 495         /*
 496          * Make sure wait for the first client does not remain active after the
 497          * group has been removed.
 498          */
 499         wpa_s->global->p2p_go_wait_client.sec = 0;
 500
 501         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 502                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 503
 504         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 505                 struct wpa_global *global;
 506                 char *ifname;
 507                 enum wpa_driver_if_type type;
 508                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 509                         wpa_s->ifname);
 510                 global = wpa_s->global;
 511                 ifname = os_strdup(wpa_s->ifname);
 512                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 513                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 514                 wpa_s = global->ifaces;
 515                 if (wpa_s && ifname)
 516                         wpa_drv_if_remove(wpa_s, type, ifname);
 517                 os_free(ifname);
 518                 return 1;
 519         }
 520
 521         if (!wpa_s->p2p_go_group_formation_completed) {
 522                 wpa_s->global->p2p_group_formation = NULL;
 523                 wpa_s->p2p_in_provisioning = 0;
 524         }
 525
 526         wpa_s->show_group_started = 0;
 527         os_free(wpa_s->go_params);
 528         wpa_s->go_params = NULL;
 529
 530         wpa_s->waiting_presence_resp = 0;
 531
 532         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 533         if (ssid && (ssid->p2p_group ||
 534                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 535                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 536                 int id = ssid->id;
 537                 if (ssid == wpa_s->current_ssid) {
 538                         wpa_sm_set_config(wpa_s->wpa, NULL);
 539                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 540                         wpa_s->current_ssid = NULL;
 541                 }
 542                 /*
 543                  * Networks objects created during any P2P activities are not
 544                  * exposed out as they might/will confuse certain non-P2P aware
 545                  * applications since these network objects won't behave like
 546                  * regular ones.
 547                  *
 548                  * Likewise, we don't send out network removed signals for such
 549                  * network objects.
 550                  */
 551                 wpa_config_remove_network(wpa_s->conf, id);
 552                 wpa_supplicant_clear_status(wpa_s);
 553                 wpa_supplicant_cancel_sched_scan(wpa_s);
 554         } else {
 555                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
 556                            "found");
 557         }
 558         if (wpa_s->ap_iface)
 559                 wpa_supplicant_ap_deinit(wpa_s);
 560         else
 561                 wpa_drv_deinit_p2p_cli(wpa_s);
 562
 563         return 0;
 564 }
 565
 566
 567 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
 568                                      u8 *go_dev_addr,
 569                                      const u8 *ssid, size_t ssid_len)
 570 {
 571         struct wpa_bss *bss;
 572         const u8 *bssid;
 573         struct wpabuf *p2p;
 574         u8 group_capab;
 575         const u8 *addr;
 576
 577         if (wpa_s->go_params)
 578                 bssid = wpa_s->go_params->peer_interface_addr;
 579         else
 580                 bssid = wpa_s->bssid;
 581
 582         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
 583         if (bss == NULL) {
 584                 u8 iface_addr[ETH_ALEN];
 585                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
 586                                            iface_addr) == 0)
 587                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
 588         }
 589         if (bss == NULL) {
 590                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 591                            "group is persistent - BSS " MACSTR " not found",
 592                            MAC2STR(bssid));
 593                 return 0;
 594         }
 595
 596         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
 597         if (p2p == NULL)
 598                 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss,
 599                                                          P2P_IE_VENDOR_TYPE);
 600         if (p2p == NULL) {
 601                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 602                            "group is persistent - BSS " MACSTR
 603                            " did not include P2P IE", MAC2STR(bssid));
 604                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
 605                             (u8 *) (bss + 1), bss->ie_len);
 606                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
 607                             ((u8 *) bss + 1) + bss->ie_len,
 608                             bss->beacon_ie_len);
 609                 return 0;
 610         }
 611
 612         group_capab = p2p_get_group_capab(p2p);
 613         addr = p2p_get_go_dev_addr(p2p);
 614         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
 615                    "group_capab=0x%x", group_capab);
 616         if (addr) {
 617                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
 618                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
 619                            MAC2STR(addr));
 620         } else
 621                 os_memset(go_dev_addr, 0, ETH_ALEN);
 622         wpabuf_free(p2p);
 623
 624         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
 625                    "go_dev_addr=" MACSTR,
 626                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
 627
 628         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
 629 }
 630
 631
 632 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
 633                                            struct wpa_ssid *ssid,
 634                                            const u8 *go_dev_addr)
 635 {
 636         struct wpa_ssid *s;
 637         int changed = 0;
 638
 639         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
 640                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
 641         for (s = wpa_s->conf->ssid; s; s = s->next) {
 642                 if (s->disabled == 2 &&
 643                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
 644                     s->ssid_len == ssid->ssid_len &&
 645                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
 646                         break;
 647         }
 648
 649         if (s) {
 650                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
 651                            "entry");
 652                 if (ssid->passphrase && !s->passphrase)
 653                         changed = 1;
 654                 else if (ssid->passphrase && s->passphrase &&
 655                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
 656                         changed = 1;
 657         } else {
 658                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
 659                            "entry");
 660                 changed = 1;
 661                 s = wpa_config_add_network(wpa_s->conf);
 662                 if (s == NULL)
 663                         return -1;
 664
 665                 /*
 666                  * Instead of network_added we emit persistent_group_added
 667                  * notification. Also to keep the defense checks in
 668                  * persistent_group obj registration method, we set the
 669                  * relevant flags in s to designate it as a persistent group.
 670                  */
 671                 s->p2p_group = 1;
 672                 s->p2p_persistent_group = 1;
 673                 wpas_notify_persistent_group_added(wpa_s, s);
 674                 wpa_config_set_network_defaults(s);
 675         }
 676
 677         s->p2p_group = 1;
 678         s->p2p_persistent_group = 1;
 679         s->disabled = 2;
 680         s->bssid_set = 1;
 681         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
 682         s->mode = ssid->mode;
 683         s->auth_alg = WPA_AUTH_ALG_OPEN;
 684         s->key_mgmt = WPA_KEY_MGMT_PSK;
 685         s->proto = WPA_PROTO_RSN;
 686         s->pairwise_cipher = WPA_CIPHER_CCMP;
 687         s->export_keys = 1;
 688         if (ssid->passphrase) {
 689                 os_free(s->passphrase);
 690                 s->passphrase = os_strdup(ssid->passphrase);
 691         }
 692         if (ssid->psk_set) {
 693                 s->psk_set = 1;
 694                 os_memcpy(s->psk, ssid->psk, 32);
 695         }
 696         if (s->passphrase && !s->psk_set)
 697                 wpa_config_update_psk(s);
 698         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
 699                 os_free(s->ssid);
 700                 s->ssid = os_malloc(ssid->ssid_len);
 701         }
 702         if (s->ssid) {
 703                 s->ssid_len = ssid->ssid_len;
 704                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
 705         }
 706         if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
 707                 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
 708                 wpa_s->global->add_psk = NULL;
 709                 changed = 1;
 710         }
 711
 712 #ifndef CONFIG_NO_CONFIG_WRITE
 713         if (changed && wpa_s->conf->update_config &&
 714             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 715                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
 716         }
 717 #endif /* CONFIG_NO_CONFIG_WRITE */
 718
 719         return s->id;
 720 }
 721
 722
 723 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
 724                                                  const u8 *addr)
 725 {
 726         struct wpa_ssid *ssid, *s;
 727         u8 *n;
 728         size_t i;
 729         int found = 0;
 730
 731         ssid = wpa_s->current_ssid;
 732         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
 733             !ssid->p2p_persistent_group)
 734                 return;
 735
 736         for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
 737                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
 738                         continue;
 739
 740                 if (s->ssid_len == ssid->ssid_len &&
 741                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
 742                         break;
 743         }
 744
 745         if (s == NULL)
 746                 return;
 747
 748         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
 749                 if (os_memcmp(s->p2p_client_list + i * ETH_ALEN, addr,
 750                               ETH_ALEN) != 0)
 751                         continue;
 752
 753                 if (i == s->num_p2p_clients - 1)
 754                         return; /* already the most recent entry */
 755
 756                 /* move the entry to mark it most recent */
 757                 os_memmove(s->p2p_client_list + i * ETH_ALEN,
 758                            s->p2p_client_list + (i + 1) * ETH_ALEN,
 759                            (s->num_p2p_clients - i - 1) * ETH_ALEN);
 760                 os_memcpy(s->p2p_client_list +
 761                           (s->num_p2p_clients - 1) * ETH_ALEN, addr, ETH_ALEN);
 762                 found = 1;
 763                 break;
 764         }
 765
 766         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
 767                 n = os_realloc_array(s->p2p_client_list,
 768                                      s->num_p2p_clients + 1, ETH_ALEN);
 769                 if (n == NULL)
 770                         return;
 771                 os_memcpy(n + s->num_p2p_clients * ETH_ALEN, addr, ETH_ALEN);
 772                 s->p2p_client_list = n;
 773                 s->num_p2p_clients++;
 774         } else if (!found) {
 775                 /* Not enough room for an additional entry - drop the oldest
 776                  * entry */
 777                 os_memmove(s->p2p_client_list,
 778                            s->p2p_client_list + ETH_ALEN,
 779                            (s->num_p2p_clients - 1) * ETH_ALEN);
 780                 os_memcpy(s->p2p_client_list +
 781                           (s->num_p2p_clients - 1) * ETH_ALEN,
 782                           addr, ETH_ALEN);
 783         }
 784
 785 #ifndef CONFIG_NO_CONFIG_WRITE
 786         if (wpa_s->parent->conf->update_config &&
 787             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
 788                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
 789 #endif /* CONFIG_NO_CONFIG_WRITE */
 790 }
 791
 792
 793 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
 794                                            int success)
 795 {
 796         struct wpa_ssid *ssid;
 797         const char *ssid_txt;
 798         int client;
 799         int persistent;
 800         u8 go_dev_addr[ETH_ALEN];
 801         int network_id = -1;
 802
 803         /*
 804          * This callback is likely called for the main interface. Update wpa_s
 805          * to use the group interface if a new interface was created for the
 806          * group.
 807          */
 808         if (wpa_s->global->p2p_group_formation)
 809                 wpa_s = wpa_s->global->p2p_group_formation;
 810         if (wpa_s->p2p_go_group_formation_completed) {
 811                 wpa_s->global->p2p_group_formation = NULL;
 812                 wpa_s->p2p_in_provisioning = 0;
 813         }
 814
 815         if (!success) {
 816                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 817                                P2P_EVENT_GROUP_FORMATION_FAILURE);
 818                 wpas_p2p_group_delete(wpa_s,
 819                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
 820                 return;
 821         }
 822
 823         wpa_msg_global(wpa_s->parent, MSG_INFO,
 824                        P2P_EVENT_GROUP_FORMATION_SUCCESS);
 825
 826         ssid = wpa_s->current_ssid;
 827         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
 828                 ssid->mode = WPAS_MODE_P2P_GO;
 829                 p2p_group_notif_formation_done(wpa_s->p2p_group);
 830                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
 831         }
 832
 833         persistent = 0;
 834         if (ssid) {
 835                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
 836                 client = ssid->mode == WPAS_MODE_INFRA;
 837                 if (ssid->mode == WPAS_MODE_P2P_GO) {
 838                         persistent = ssid->p2p_persistent_group;
 839                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
 840                                   ETH_ALEN);
 841                 } else
 842                         persistent = wpas_p2p_persistent_group(wpa_s,
 843                                                                go_dev_addr,
 844                                                                ssid->ssid,
 845                                                                ssid->ssid_len);
 846         } else {
 847                 ssid_txt = "";
 848                 client = wpa_s->p2p_group_interface ==
 849                         P2P_GROUP_INTERFACE_CLIENT;
 850                 os_memset(go_dev_addr, 0, ETH_ALEN);
 851         }
 852
 853         wpa_s->show_group_started = 0;
 854         if (client) {
 855                 /*
 856                  * Indicate event only after successfully completed 4-way
 857                  * handshake, i.e., when the interface is ready for data
 858                  * packets.
 859                  */
 860                 wpa_s->show_group_started = 1;
 861         } else if (ssid && ssid->passphrase == NULL && ssid->psk_set) {
 862                 char psk[65];
 863                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
 864                 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 865                                "%s GO ssid=\"%s\" freq=%d psk=%s go_dev_addr="
 866                                MACSTR "%s",
 867                                wpa_s->ifname, ssid_txt, ssid->frequency, psk,
 868                                MAC2STR(go_dev_addr),
 869                                persistent ? " [PERSISTENT]" : "");
 870                 wpas_p2p_cross_connect_setup(wpa_s);
 871                 wpas_p2p_set_group_idle_timeout(wpa_s);
 872         } else {
 873                 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 874                                "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
 875                                "go_dev_addr=" MACSTR "%s",
 876                                wpa_s->ifname, ssid_txt,
 877                                ssid ? ssid->frequency : 0,
 878                                ssid && ssid->passphrase ? ssid->passphrase : "",
 879                                MAC2STR(go_dev_addr),
 880                                persistent ? " [PERSISTENT]" : "");
 881                 wpas_p2p_cross_connect_setup(wpa_s);
 882                 wpas_p2p_set_group_idle_timeout(wpa_s);
 883         }
 884
 885         if (persistent)
 886                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
 887                                                              ssid, go_dev_addr);
 888         else {
 889                 os_free(wpa_s->global->add_psk);
 890                 wpa_s->global->add_psk = NULL;
 891         }
 892         if (network_id < 0 && ssid)
 893                 network_id = ssid->id;
 894         if (!client) {
 895                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
 896                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
 897         }
 898 }
 899
 900
 901 struct send_action_work {
 902         unsigned int freq;
 903         u8 dst[ETH_ALEN];
 904         u8 src[ETH_ALEN];
 905         u8 bssid[ETH_ALEN];
 906         size_t len;
 907         unsigned int wait_time;
 908         u8 buf[0];
 909 };
 910
 911
 912 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
 913                                               void *timeout_ctx)
 914 {
 915         struct wpa_supplicant *wpa_s = eloop_ctx;
 916
 917         if (!wpa_s->p2p_send_action_work)
 918                 return;
 919
 920         wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
 921         os_free(wpa_s->p2p_send_action_work->ctx);
 922         radio_work_done(wpa_s->p2p_send_action_work);
 923         wpa_s->p2p_send_action_work = NULL;
 924 }
 925
 926
 927 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
 928                                            unsigned int freq,
 929                                            const u8 *dst, const u8 *src,
 930                                            const u8 *bssid,
 931                                            const u8 *data, size_t data_len,
 932                                            enum offchannel_send_action_result
 933                                            result)
 934 {
 935         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
 936
 937         if (wpa_s->p2p_send_action_work) {
 938                 struct send_action_work *awork;
 939                 awork = wpa_s->p2p_send_action_work->ctx;
 940                 if (awork->wait_time == 0) {
 941                         os_free(awork);
 942                         radio_work_done(wpa_s->p2p_send_action_work);
 943                         wpa_s->p2p_send_action_work = NULL;
 944                 } else {
 945                         /*
 946                          * In theory, this should not be needed, but number of
 947                          * places in the P2P code is still using non-zero wait
 948                          * time for the last Action frame in the sequence and
 949                          * some of these do not call send_action_done().
 950                          */
 951                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
 952                                              wpa_s, NULL);
 953                         eloop_register_timeout(
 954                                 0, awork->wait_time * 1000,
 955                                 wpas_p2p_send_action_work_timeout,
 956                                 wpa_s, NULL);
 957                 }
 958         }
 959
 960         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
 961                 return;
 962
 963         switch (result) {
 964         case OFFCHANNEL_SEND_ACTION_SUCCESS:
 965                 res = P2P_SEND_ACTION_SUCCESS;
 966                 break;
 967         case OFFCHANNEL_SEND_ACTION_NO_ACK:
 968                 res = P2P_SEND_ACTION_NO_ACK;
 969                 break;
 970         case OFFCHANNEL_SEND_ACTION_FAILED:
 971                 res = P2P_SEND_ACTION_FAILED;
 972                 break;
 973         }
 974
 975         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
 976
 977         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
 978             wpa_s->pending_pd_before_join &&
 979             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
 980              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
 981             wpa_s->p2p_fallback_to_go_neg) {
 982                 wpa_s->pending_pd_before_join = 0;
 983                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
 984                         "during p2p_connect-auto");
 985                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
 986                 return;
 987         }
 988 }
 989
 990
 991 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
 992 {
 993         struct wpa_supplicant *wpa_s = work->wpa_s;
 994         struct send_action_work *awork = work->ctx;
 995
 996         if (deinit) {
 997                 os_free(awork);
 998                 return;
 999         }
1000
1001         if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1002                                    awork->bssid, awork->buf, awork->len,
1003                                    awork->wait_time,
1004                                    wpas_p2p_send_action_tx_status, 1) < 0) {
1005                 os_free(awork);
1006                 radio_work_done(work);
1007                 return;
1008         }
1009         wpa_s->p2p_send_action_work = work;
1010 }
1011
1012
1013 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1014                                  unsigned int freq, const u8 *dst,
1015                                  const u8 *src, const u8 *bssid, const u8 *buf,
1016                                  size_t len, unsigned int wait_time)
1017 {
1018         struct send_action_work *awork;
1019
1020         if (wpa_s->p2p_send_action_work) {
1021                 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1022                 return -1;
1023         }
1024
1025         awork = os_zalloc(sizeof(*awork) + len);
1026         if (awork == NULL)
1027                 return -1;
1028
1029         awork->freq = freq;
1030         os_memcpy(awork->dst, dst, ETH_ALEN);
1031         os_memcpy(awork->src, src, ETH_ALEN);
1032         os_memcpy(awork->bssid, bssid, ETH_ALEN);
1033         awork->len = len;
1034         awork->wait_time = wait_time;
1035         os_memcpy(awork->buf, buf, len);
1036
1037         if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
1038                            wpas_send_action_cb, awork) < 0) {
1039                 os_free(awork);
1040                 return -1;
1041         }
1042
1043         return 0;
1044 }
1045
1046
1047 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1048                             const u8 *src, const u8 *bssid, const u8 *buf,
1049                             size_t len, unsigned int wait_time)
1050 {
1051         struct wpa_supplicant *wpa_s = ctx;
1052         int listen_freq = -1, send_freq = -1;
1053
1054         if (wpa_s->p2p_listen_work)
1055                 listen_freq = wpa_s->p2p_listen_work->freq;
1056         if (wpa_s->p2p_send_action_work)
1057                 send_freq = wpa_s->p2p_send_action_work->freq;
1058         if (listen_freq != (int) freq && send_freq != (int) freq) {
1059                 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)",
1060                            listen_freq, send_freq);
1061                 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1062                                              len, wait_time);
1063         }
1064
1065         wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1066         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1067                                       wait_time,
1068                                       wpas_p2p_send_action_tx_status, 1);
1069 }
1070
1071
1072 static void wpas_send_action_done(void *ctx)
1073 {
1074         struct wpa_supplicant *wpa_s = ctx;
1075
1076         if (wpa_s->p2p_send_action_work) {
1077                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1078                                      wpa_s, NULL);
1079                 os_free(wpa_s->p2p_send_action_work->ctx);
1080                 radio_work_done(wpa_s->p2p_send_action_work);
1081                 wpa_s->p2p_send_action_work = NULL;
1082         }
1083
1084         offchannel_send_action_done(wpa_s);
1085 }
1086
1087
1088 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1089                                     struct p2p_go_neg_results *params)
1090 {
1091         if (wpa_s->go_params == NULL) {
1092                 wpa_s->go_params = os_malloc(sizeof(*params));
1093                 if (wpa_s->go_params == NULL)
1094                         return -1;
1095         }
1096         os_memcpy(wpa_s->go_params, params, sizeof(*params));
1097         return 0;
1098 }
1099
1100
1101 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1102                                     struct p2p_go_neg_results *res)
1103 {
1104         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR,
1105                    MAC2STR(res->peer_interface_addr));
1106         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1107                           res->ssid, res->ssid_len);
1108         wpa_supplicant_ap_deinit(wpa_s);
1109         wpas_copy_go_neg_results(wpa_s, res);
1110         if (res->wps_method == WPS_PBC)
1111                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
1112         else {
1113                 u16 dev_pw_id = DEV_PW_DEFAULT;
1114                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1115                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1116                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1117                                    wpa_s->p2p_pin, 1, dev_pw_id);
1118         }
1119 }
1120
1121
1122 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1123                                   struct wpa_ssid *ssid)
1124 {
1125         struct wpa_ssid *persistent;
1126         struct psk_list_entry *psk;
1127         struct hostapd_data *hapd;
1128
1129         if (!wpa_s->ap_iface)
1130                 return;
1131
1132         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
1133                                              ssid->ssid_len);
1134         if (persistent == NULL)
1135                 return;
1136
1137         hapd = wpa_s->ap_iface->bss[0];
1138
1139         dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1140                          list) {
1141                 struct hostapd_wpa_psk *hpsk;
1142
1143                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1144                         MACSTR " psk=%d",
1145                         MAC2STR(psk->addr), psk->p2p);
1146                 hpsk = os_zalloc(sizeof(*hpsk));
1147                 if (hpsk == NULL)
1148                         break;
1149                 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1150                 if (psk->p2p)
1151                         os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1152                 else
1153                         os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1154                 hpsk->next = hapd->conf->ssid.wpa_psk;
1155                 hapd->conf->ssid.wpa_psk = hpsk;
1156         }
1157 }
1158
1159
1160 static void p2p_go_configured(void *ctx, void *data)
1161 {
1162         struct wpa_supplicant *wpa_s = ctx;
1163         struct p2p_go_neg_results *params = data;
1164         struct wpa_ssid *ssid;
1165         int network_id = -1;
1166
1167         ssid = wpa_s->current_ssid;
1168         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1169                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1170                 if (wpa_s->global->p2p_group_formation == wpa_s)
1171                         wpa_s->global->p2p_group_formation = NULL;
1172                 if (os_strlen(params->passphrase) > 0) {
1173                         wpa_msg_global(wpa_s->parent, MSG_INFO,
1174                                        P2P_EVENT_GROUP_STARTED
1175                                        "%s GO ssid=\"%s\" freq=%d "
1176                                        "passphrase=\"%s\" go_dev_addr=" MACSTR
1177                                        "%s", wpa_s->ifname,
1178                                        wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
1179                                        ssid->frequency, params->passphrase,
1180                                        MAC2STR(wpa_s->global->p2p_dev_addr),
1181                                        params->persistent_group ?
1182                                        " [PERSISTENT]" : "");
1183                 } else {
1184                         char psk[65];
1185                         wpa_snprintf_hex(psk, sizeof(psk), params->psk,
1186                                          sizeof(params->psk));
1187                         wpa_msg_global(wpa_s->parent, MSG_INFO,
1188                                        P2P_EVENT_GROUP_STARTED
1189                                        "%s GO ssid=\"%s\" freq=%d psk=%s "
1190                                        "go_dev_addr=" MACSTR "%s",
1191                                        wpa_s->ifname,
1192                                        wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
1193                                        ssid->frequency, psk,
1194                                        MAC2STR(wpa_s->global->p2p_dev_addr),
1195                                        params->persistent_group ?
1196                                        " [PERSISTENT]" : "");
1197                 }
1198
1199                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1200                 if (params->persistent_group) {
1201                         network_id = wpas_p2p_store_persistent_group(
1202                                 wpa_s->parent, ssid,
1203                                 wpa_s->global->p2p_dev_addr);
1204                         wpas_p2p_add_psk_list(wpa_s, ssid);
1205                 }
1206                 if (network_id < 0)
1207                         network_id = ssid->id;
1208                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1209                 wpas_p2p_cross_connect_setup(wpa_s);
1210                 wpas_p2p_set_group_idle_timeout(wpa_s);
1211
1212                 if (wpa_s->p2p_first_connection_timeout) {
1213                         wpa_dbg(wpa_s, MSG_DEBUG,
1214                                 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1215                                 wpa_s->p2p_first_connection_timeout);
1216                         wpa_s->p2p_go_group_formation_completed = 0;
1217                         wpa_s->global->p2p_group_formation = wpa_s;
1218                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1219                                              wpa_s->parent, NULL);
1220                         eloop_register_timeout(
1221                                 wpa_s->p2p_first_connection_timeout, 0,
1222                                 wpas_p2p_group_formation_timeout,
1223                                 wpa_s->parent, NULL);
1224                 }
1225
1226                 return;
1227         }
1228
1229         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1230         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1231                                               params->peer_interface_addr)) {
1232                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1233                            "filtering");
1234                 return;
1235         }
1236         if (params->wps_method == WPS_PBC)
1237                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1238                                           params->peer_device_addr);
1239         else if (wpa_s->p2p_pin[0])
1240                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1241                                           wpa_s->p2p_pin, NULL, 0, 0);
1242         os_free(wpa_s->go_params);
1243         wpa_s->go_params = NULL;
1244 }
1245
1246
1247 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1248                               struct p2p_go_neg_results *params,
1249                               int group_formation)
1250 {
1251         struct wpa_ssid *ssid;
1252
1253         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1254         if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1255                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1256                         "results");
1257                 return;
1258         }
1259
1260         ssid = wpa_config_add_network(wpa_s->conf);
1261         if (ssid == NULL) {
1262                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1263                 return;
1264         }
1265
1266         wpa_s->show_group_started = 0;
1267
1268         wpa_config_set_network_defaults(ssid);
1269         ssid->temporary = 1;
1270         ssid->p2p_group = 1;
1271         ssid->p2p_persistent_group = params->persistent_group;
1272         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1273                 WPAS_MODE_P2P_GO;
1274         ssid->frequency = params->freq;
1275         ssid->ht40 = params->ht40;
1276         ssid->vht = params->vht;
1277         ssid->ssid = os_zalloc(params->ssid_len + 1);
1278         if (ssid->ssid) {
1279                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1280                 ssid->ssid_len = params->ssid_len;
1281         }
1282         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1283         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1284         ssid->proto = WPA_PROTO_RSN;
1285         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1286         if (os_strlen(params->passphrase) > 0) {
1287                 ssid->passphrase = os_strdup(params->passphrase);
1288                 if (ssid->passphrase == NULL) {
1289                         wpa_msg_global(wpa_s, MSG_ERROR,
1290                                        "P2P: Failed to copy passphrase for GO");
1291                         wpa_config_remove_network(wpa_s->conf, ssid->id);
1292                         return;
1293                 }
1294         } else
1295                 ssid->passphrase = NULL;
1296         ssid->psk_set = params->psk_set;
1297         if (ssid->psk_set)
1298                 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1299         else if (ssid->passphrase)
1300                 wpa_config_update_psk(ssid);
1301         ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
1302
1303         wpa_s->ap_configured_cb = p2p_go_configured;
1304         wpa_s->ap_configured_cb_ctx = wpa_s;
1305         wpa_s->ap_configured_cb_data = wpa_s->go_params;
1306         wpa_s->connect_without_scan = ssid;
1307         wpa_s->reassociate = 1;
1308         wpa_s->disconnected = 0;
1309         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1310                 "start GO)");
1311         wpa_supplicant_req_scan(wpa_s, 0, 0);
1312 }
1313
1314
1315 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1316                                   const struct wpa_supplicant *src)
1317 {
1318         struct wpa_config *d;
1319         const struct wpa_config *s;
1320
1321         d = dst->conf;
1322         s = src->conf;
1323
1324 #define C(n) if (s->n) d->n = os_strdup(s->n)
1325         C(device_name);
1326         C(manufacturer);
1327         C(model_name);
1328         C(model_number);
1329         C(serial_number);
1330         C(config_methods);
1331 #undef C
1332
1333         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1334         os_memcpy(d->sec_device_type, s->sec_device_type,
1335                   sizeof(d->sec_device_type));
1336         d->num_sec_device_types = s->num_sec_device_types;
1337
1338         d->p2p_group_idle = s->p2p_group_idle;
1339         d->p2p_intra_bss = s->p2p_intra_bss;
1340         d->persistent_reconnect = s->persistent_reconnect;
1341         d->max_num_sta = s->max_num_sta;
1342         d->pbc_in_m1 = s->pbc_in_m1;
1343         d->ignore_old_scan_res = s->ignore_old_scan_res;
1344         d->beacon_int = s->beacon_int;
1345         d->disassoc_low_ack = s->disassoc_low_ack;
1346         d->disable_scan_offload = s->disable_scan_offload;
1347 }
1348
1349
1350 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
1351                                       char *ifname, size_t len)
1352 {
1353         char *ifname_ptr = wpa_s->ifname;
1354
1355         if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
1356                        os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
1357                 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
1358         }
1359
1360         os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
1361         if (os_strlen(ifname) >= IFNAMSIZ &&
1362             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
1363                 /* Try to avoid going over the IFNAMSIZ length limit */
1364                 os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
1365         }
1366 }
1367
1368
1369 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
1370                                         enum wpa_driver_if_type type)
1371 {
1372         char ifname[120], force_ifname[120];
1373
1374         if (wpa_s->pending_interface_name[0]) {
1375                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
1376                            "- skip creation of a new one");
1377                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
1378                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
1379                                    "unknown?! ifname='%s'",
1380                                    wpa_s->pending_interface_name);
1381                         return -1;
1382                 }
1383                 return 0;
1384         }
1385
1386         wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
1387         force_ifname[0] = '\0';
1388
1389         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
1390                    ifname);
1391         wpa_s->p2p_group_idx++;
1392
1393         wpa_s->pending_interface_type = type;
1394         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
1395                            wpa_s->pending_interface_addr, NULL) < 0) {
1396                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
1397                            "interface");
1398                 return -1;
1399         }
1400
1401         if (force_ifname[0]) {
1402                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
1403                            force_ifname);
1404                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
1405                            sizeof(wpa_s->pending_interface_name));
1406         } else
1407                 os_strlcpy(wpa_s->pending_interface_name, ifname,
1408                            sizeof(wpa_s->pending_interface_name));
1409         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
1410                    MACSTR, wpa_s->pending_interface_name,
1411                    MAC2STR(wpa_s->pending_interface_addr));
1412
1413         return 0;
1414 }
1415
1416
1417 static void wpas_p2p_remove_pending_group_interface(
1418         struct wpa_supplicant *wpa_s)
1419 {
1420         if (!wpa_s->pending_interface_name[0] ||
1421             is_zero_ether_addr(wpa_s->pending_interface_addr))
1422                 return; /* No pending virtual interface */
1423
1424         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
1425                    wpa_s->pending_interface_name);
1426         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
1427                           wpa_s->pending_interface_name);
1428         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1429         wpa_s->pending_interface_name[0] = '\0';
1430 }
1431
1432
1433 static struct wpa_supplicant *
1434 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
1435 {
1436         struct wpa_interface iface;
1437         struct wpa_supplicant *group_wpa_s;
1438
1439         if (!wpa_s->pending_interface_name[0]) {
1440                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
1441                 if (!wpas_p2p_create_iface(wpa_s))
1442                         return NULL;
1443                 /*
1444                  * Something has forced us to remove the pending interface; try
1445                  * to create a new one and hope for the best that we will get
1446                  * the same local address.
1447                  */
1448                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
1449                                                  WPA_IF_P2P_CLIENT) < 0)
1450                         return NULL;
1451         }
1452
1453         os_memset(&iface, 0, sizeof(iface));
1454         iface.ifname = wpa_s->pending_interface_name;
1455         iface.driver = wpa_s->driver->name;
1456         if (wpa_s->conf->ctrl_interface == NULL &&
1457             wpa_s->parent != wpa_s &&
1458             wpa_s->p2p_mgmt &&
1459             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
1460                 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
1461         else
1462                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
1463         iface.driver_param = wpa_s->conf->driver_param;
1464         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
1465         if (group_wpa_s == NULL) {
1466                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
1467                            "wpa_supplicant interface");
1468                 return NULL;
1469         }
1470         wpa_s->pending_interface_name[0] = '\0';
1471         group_wpa_s->parent = wpa_s;
1472         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
1473                 P2P_GROUP_INTERFACE_CLIENT;
1474         wpa_s->global->p2p_group_formation = group_wpa_s;
1475
1476         wpas_p2p_clone_config(group_wpa_s, wpa_s);
1477
1478         return group_wpa_s;
1479 }
1480
1481
1482 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
1483                                              void *timeout_ctx)
1484 {
1485         struct wpa_supplicant *wpa_s = eloop_ctx;
1486         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
1487         wpas_p2p_group_formation_failed(wpa_s);
1488 }
1489
1490
1491 void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s)
1492 {
1493         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1494                              wpa_s->parent, NULL);
1495         if (wpa_s->global->p2p)
1496                 p2p_group_formation_failed(wpa_s->global->p2p);
1497         wpas_group_formation_completed(wpa_s, 0);
1498 }
1499
1500
1501 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
1502 {
1503         wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
1504         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1505                              wpa_s->parent, NULL);
1506         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
1507                                wpa_s->parent, NULL);
1508         wpa_s->global->p2p_fail_on_wps_complete = 0;
1509 }
1510
1511
1512 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
1513 {
1514         if (wpa_s->global->p2p_group_formation != wpa_s)
1515                 return;
1516         /* Speed up group formation timeout since this cannot succeed */
1517         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1518                              wpa_s->parent, NULL);
1519         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
1520                                wpa_s->parent, NULL);
1521 }
1522
1523
1524 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
1525 {
1526         struct wpa_supplicant *wpa_s = ctx;
1527
1528         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1529                 wpa_drv_cancel_remain_on_channel(wpa_s);
1530                 wpa_s->off_channel_freq = 0;
1531                 wpa_s->roc_waiting_drv_freq = 0;
1532         }
1533
1534         if (res->status) {
1535                 wpa_msg_global(wpa_s, MSG_INFO,
1536                                P2P_EVENT_GO_NEG_FAILURE "status=%d",
1537                                res->status);
1538                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
1539                 wpas_p2p_remove_pending_group_interface(wpa_s);
1540                 return;
1541         }
1542
1543         if (wpa_s->p2p_go_ht40)
1544                 res->ht40 = 1;
1545         if (wpa_s->p2p_go_vht)
1546                 res->vht = 1;
1547
1548         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
1549                        "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
1550                        " wps_method=%s",
1551                        res->role_go ? "GO" : "client", res->freq, res->ht40,
1552                        MAC2STR(res->peer_device_addr),
1553                        MAC2STR(res->peer_interface_addr),
1554                        p2p_wps_method_text(res->wps_method));
1555         wpas_notify_p2p_go_neg_completed(wpa_s, res);
1556
1557         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
1558                 struct wpa_ssid *ssid;
1559                 ssid = wpa_config_get_network(wpa_s->conf,
1560                                               wpa_s->p2p_persistent_id);
1561                 if (ssid && ssid->disabled == 2 &&
1562                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
1563                         size_t len = os_strlen(ssid->passphrase);
1564                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
1565                                    "on requested persistent group");
1566                         os_memcpy(res->passphrase, ssid->passphrase, len);
1567                         res->passphrase[len] = '\0';
1568                 }
1569         }
1570
1571         if (wpa_s->create_p2p_iface) {
1572                 struct wpa_supplicant *group_wpa_s =
1573                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
1574                 if (group_wpa_s == NULL) {
1575                         wpas_p2p_remove_pending_group_interface(wpa_s);
1576                         return;
1577                 }
1578                 if (group_wpa_s != wpa_s) {
1579                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
1580                                   sizeof(group_wpa_s->p2p_pin));
1581                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
1582                 }
1583                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1584                 wpa_s->pending_interface_name[0] = '\0';
1585                 group_wpa_s->p2p_in_provisioning = 1;
1586
1587                 if (res->role_go)
1588                         wpas_start_wps_go(group_wpa_s, res, 1);
1589                 else
1590                         wpas_start_wps_enrollee(group_wpa_s, res);
1591         } else {
1592                 wpa_s->p2p_in_provisioning = 1;
1593                 wpa_s->global->p2p_group_formation = wpa_s;
1594
1595                 if (res->role_go)
1596                         wpas_start_wps_go(wpa_s, res, 1);
1597                 else
1598                         wpas_start_wps_enrollee(ctx, res);
1599         }
1600
1601         wpa_s->p2p_long_listen = 0;
1602         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
1603
1604         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
1605         eloop_register_timeout(15 + res->peer_config_timeout / 100,
1606                                (res->peer_config_timeout % 100) * 10000,
1607                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
1608 }
1609
1610
1611 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id)
1612 {
1613         struct wpa_supplicant *wpa_s = ctx;
1614         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
1615                        " dev_passwd_id=%u", MAC2STR(src), dev_passwd_id);
1616
1617         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id);
1618 }
1619
1620
1621 static void wpas_dev_found(void *ctx, const u8 *addr,
1622                            const struct p2p_peer_info *info,
1623                            int new_device)
1624 {
1625 #ifndef CONFIG_NO_STDOUT_DEBUG
1626         struct wpa_supplicant *wpa_s = ctx;
1627         char devtype[WPS_DEV_TYPE_BUFSIZE];
1628         char *wfd_dev_info_hex = NULL;
1629
1630 #ifdef CONFIG_WIFI_DISPLAY
1631         wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
1632                                                     WFD_SUBELEM_DEVICE_INFO);
1633 #endif /* CONFIG_WIFI_DISPLAY */
1634
1635         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
1636                        " p2p_dev_addr=" MACSTR
1637                        " pri_dev_type=%s name='%s' config_methods=0x%x "
1638                        "dev_capab=0x%x group_capab=0x%x%s%s",
1639                        MAC2STR(addr), MAC2STR(info->p2p_device_addr),
1640                        wps_dev_type_bin2str(info->pri_dev_type, devtype,
1641                                             sizeof(devtype)),
1642                        info->device_name, info->config_methods,
1643                        info->dev_capab, info->group_capab,
1644                        wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
1645                        wfd_dev_info_hex ? wfd_dev_info_hex : "");
1646 #endif /* CONFIG_NO_STDOUT_DEBUG */
1647
1648         os_free(wfd_dev_info_hex);
1649
1650         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
1651 }
1652
1653
1654 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
1655 {
1656         struct wpa_supplicant *wpa_s = ctx;
1657
1658         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
1659                        "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
1660
1661         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
1662 }
1663
1664
1665 static void wpas_find_stopped(void *ctx)
1666 {
1667         struct wpa_supplicant *wpa_s = ctx;
1668         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
1669 }
1670
1671
1672 struct wpas_p2p_listen_work {
1673         unsigned int freq;
1674         unsigned int duration;
1675         struct wpabuf *probe_resp_ie;
1676 };
1677
1678
1679 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
1680 {
1681         if (lwork == NULL)
1682                 return;
1683         wpabuf_free(lwork->probe_resp_ie);
1684         os_free(lwork);
1685 }
1686
1687
1688 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
1689 {
1690         struct wpas_p2p_listen_work *lwork;
1691
1692         if (!wpa_s->p2p_listen_work)
1693                 return;
1694
1695         lwork = wpa_s->p2p_listen_work->ctx;
1696         wpas_p2p_listen_work_free(lwork);
1697         radio_work_done(wpa_s->p2p_listen_work);
1698         wpa_s->p2p_listen_work = NULL;
1699 }
1700
1701
1702 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
1703 {
1704         struct wpa_supplicant *wpa_s = work->wpa_s;
1705         struct wpas_p2p_listen_work *lwork = work->ctx;
1706
1707         if (deinit) {
1708                 wpas_p2p_listen_work_free(lwork);
1709                 return;
1710         }
1711
1712         wpa_s->p2p_listen_work = work;
1713
1714         wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
1715
1716         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
1717                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
1718                            "report received Probe Request frames");
1719                 wpas_p2p_listen_work_done(wpa_s);
1720                 return;
1721         }
1722
1723         wpa_s->pending_listen_freq = lwork->freq;
1724         wpa_s->pending_listen_duration = lwork->duration;
1725
1726         if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, lwork->duration) < 0)
1727         {
1728                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
1729                            "to remain on channel (%u MHz) for Listen "
1730                            "state", lwork->freq);
1731                 wpas_p2p_listen_work_done(wpa_s);
1732                 wpa_s->pending_listen_freq = 0;
1733                 return;
1734         }
1735         wpa_s->off_channel_freq = 0;
1736         wpa_s->roc_waiting_drv_freq = lwork->freq;
1737 }
1738
1739
1740 static int wpas_start_listen(void *ctx, unsigned int freq,
1741                              unsigned int duration,
1742                              const struct wpabuf *probe_resp_ie)
1743 {
1744         struct wpa_supplicant *wpa_s = ctx;
1745         struct wpas_p2p_listen_work *lwork;
1746
1747         if (wpa_s->p2p_listen_work) {
1748                 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
1749                 return -1;
1750         }
1751
1752         lwork = os_zalloc(sizeof(*lwork));
1753         if (lwork == NULL)
1754                 return -1;
1755         lwork->freq = freq;
1756         lwork->duration = duration;
1757         if (probe_resp_ie) {
1758                 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
1759                 if (lwork->probe_resp_ie == NULL) {
1760                         wpas_p2p_listen_work_free(lwork);
1761                         return -1;
1762                 }
1763         }
1764
1765         if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
1766                            lwork) < 0) {
1767                 wpas_p2p_listen_work_free(lwork);
1768                 return -1;
1769         }
1770
1771         return 0;
1772 }
1773
1774
1775 static void wpas_stop_listen(void *ctx)
1776 {
1777         struct wpa_supplicant *wpa_s = ctx;
1778         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1779                 wpa_drv_cancel_remain_on_channel(wpa_s);
1780                 wpa_s->off_channel_freq = 0;
1781                 wpa_s->roc_waiting_drv_freq = 0;
1782         }
1783         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
1784         wpa_drv_probe_req_report(wpa_s, 0);
1785         wpas_p2p_listen_work_done(wpa_s);
1786 }
1787
1788
1789 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf)
1790 {
1791         struct wpa_supplicant *wpa_s = ctx;
1792         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1);
1793 }
1794
1795
1796 /*
1797  * DNS Header section is used only to calculate compression pointers, so the
1798  * contents of this data does not matter, but the length needs to be reserved
1799  * in the virtual packet.
1800  */
1801 #define DNS_HEADER_LEN 12
1802
1803 /*
1804  * 27-octet in-memory packet from P2P specification containing two implied
1805  * queries for _tcp.lcoal. PTR IN and _udp.local. PTR IN
1806  */
1807 #define P2P_SD_IN_MEMORY_LEN 27
1808
1809 static int p2p_sd_dns_uncompress_label(char **upos, char *uend, u8 *start,
1810                                        u8 **spos, const u8 *end)
1811 {
1812         while (*spos < end) {
1813                 u8 val = ((*spos)[0] & 0xc0) >> 6;
1814                 int len;
1815
1816                 if (val == 1 || val == 2) {
1817                         /* These are reserved values in RFC 1035 */
1818                         wpa_printf(MSG_DEBUG, "P2P: Invalid domain name "
1819                                    "sequence starting with 0x%x", val);
1820                         return -1;
1821                 }
1822
1823                 if (val == 3) {
1824                         u16 offset;
1825                         u8 *spos_tmp;
1826
1827                         /* Offset */
1828                         if (*spos + 2 > end) {
1829                                 wpa_printf(MSG_DEBUG, "P2P: No room for full "
1830                                            "DNS offset field");
1831                                 return -1;
1832                         }
1833
1834                         offset = (((*spos)[0] & 0x3f) << 8) | (*spos)[1];
1835                         if (offset >= *spos - start) {
1836                                 wpa_printf(MSG_DEBUG, "P2P: Invalid DNS "
1837                                            "pointer offset %u", offset);
1838                                 return -1;
1839                         }
1840
1841                         (*spos) += 2;
1842                         spos_tmp = start + offset;
1843                         return p2p_sd_dns_uncompress_label(upos, uend, start,
1844                                                            &spos_tmp,
1845                                                            *spos - 2);
1846                 }
1847
1848                 /* Label */
1849                 len = (*spos)[0] & 0x3f;
1850                 if (len == 0)
1851                         return 0;
1852
1853                 (*spos)++;
1854                 if (*spos + len > end) {
1855                         wpa_printf(MSG_DEBUG, "P2P: Invalid domain name "
1856                                    "sequence - no room for label with length "
1857                                    "%u", len);
1858                         return -1;
1859                 }
1860
1861                 if (*upos + len + 2 > uend)
1862                         return -2;
1863
1864                 os_memcpy(*upos, *spos, len);
1865                 *spos += len;
1866                 *upos += len;
1867                 (*upos)[0] = '.';
1868                 (*upos)++;
1869                 (*upos)[0] = '\0';
1870         }
1871
1872         return 0;
1873 }
1874
1875
1876 /* Uncompress domain names per RFC 1035 using the P2P SD in-memory packet.
1877  * Returns -1 on parsing error (invalid input sequence), -2 if output buffer is
1878  * not large enough */
1879 static int p2p_sd_dns_uncompress(char *buf, size_t buf_len, const u8 *msg,
1880                                  size_t msg_len, size_t offset)
1881 {
1882         /* 27-octet in-memory packet from P2P specification */
1883         const char *prefix = "\x04_tcp\x05local\x00\x00\x0C\x00\x01"
1884                 "\x04_udp\xC0\x11\x00\x0C\x00\x01";
1885         u8 *tmp, *end, *spos;
1886         char *upos, *uend;
1887         int ret = 0;
1888
1889         if (buf_len < 2)
1890                 return -1;
1891         if (offset > msg_len)
1892                 return -1;
1893
1894         tmp = os_malloc(DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN + msg_len);
1895         if (tmp == NULL)
1896                 return -1;
1897         spos = tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN;
1898         end = spos + msg_len;
1899         spos += offset;
1900
1901         os_memset(tmp, 0, DNS_HEADER_LEN);
1902         os_memcpy(tmp + DNS_HEADER_LEN, prefix, P2P_SD_IN_MEMORY_LEN);
1903         os_memcpy(tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN, msg, msg_len);
1904
1905         upos = buf;
1906         uend = buf + buf_len;
1907
1908         ret = p2p_sd_dns_uncompress_label(&upos, uend, tmp, &spos, end);
1909         if (ret) {
1910                 os_free(tmp);
1911                 return ret;
1912         }
1913
1914         if (upos == buf) {
1915                 upos[0] = '.';
1916                 upos[1] = '\0';
1917         } else if (upos[-1] == '.')
1918                 upos[-1] = '\0';
1919
1920         os_free(tmp);
1921         return 0;
1922 }
1923
1924
1925 static struct p2p_srv_bonjour *
1926 wpas_p2p_service_get_bonjour(struct wpa_supplicant *wpa_s,
1927                              const struct wpabuf *query)
1928 {
1929         struct p2p_srv_bonjour *bsrv;
1930         size_t len;
1931
1932         len = wpabuf_len(query);
1933         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1934                          struct p2p_srv_bonjour, list) {
1935                 if (len == wpabuf_len(bsrv->query) &&
1936                     os_memcmp(wpabuf_head(query), wpabuf_head(bsrv->query),
1937                               len) == 0)
1938                         return bsrv;
1939         }
1940         return NULL;
1941 }
1942
1943
1944 static struct p2p_srv_upnp *
1945 wpas_p2p_service_get_upnp(struct wpa_supplicant *wpa_s, u8 version,
1946                           const char *service)
1947 {
1948         struct p2p_srv_upnp *usrv;
1949
1950         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1951                          struct p2p_srv_upnp, list) {
1952                 if (version == usrv->version &&
1953                     os_strcmp(service, usrv->service) == 0)
1954                         return usrv;
1955         }
1956         return NULL;
1957 }
1958
1959
1960 static void wpas_sd_add_proto_not_avail(struct wpabuf *resp, u8 srv_proto,
1961                                         u8 srv_trans_id)
1962 {
1963         u8 *len_pos;
1964
1965         if (wpabuf_tailroom(resp) < 5)
1966                 return;
1967
1968         /* Length (to be filled) */
1969         len_pos = wpabuf_put(resp, 2);
1970         wpabuf_put_u8(resp, srv_proto);
1971         wpabuf_put_u8(resp, srv_trans_id);
1972         /* Status Code */
1973         wpabuf_put_u8(resp, P2P_SD_PROTO_NOT_AVAILABLE);
1974         /* Response Data: empty */
1975         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1976 }
1977
1978
1979 static void wpas_sd_all_bonjour(struct wpa_supplicant *wpa_s,
1980                                 struct wpabuf *resp, u8 srv_trans_id)
1981 {
1982         struct p2p_srv_bonjour *bsrv;
1983         u8 *len_pos;
1984
1985         wpa_printf(MSG_DEBUG, "P2P: SD Request for all Bonjour services");
1986
1987         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1988                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
1989                 return;
1990         }
1991
1992         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1993                          struct p2p_srv_bonjour, list) {
1994                 if (wpabuf_tailroom(resp) <
1995                     5 + wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp))
1996                         return;
1997                 /* Length (to be filled) */
1998                 len_pos = wpabuf_put(resp, 2);
1999                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
2000                 wpabuf_put_u8(resp, srv_trans_id);
2001                 /* Status Code */
2002                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2003                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
2004                                   wpabuf_head(bsrv->resp),
2005                                   wpabuf_len(bsrv->resp));
2006                 /* Response Data */
2007                 wpabuf_put_buf(resp, bsrv->query); /* Key */
2008                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
2009                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
2010                              2);
2011         }
2012 }
2013
2014
2015 static int match_bonjour_query(struct p2p_srv_bonjour *bsrv, const u8 *query,
2016                                size_t query_len)
2017 {
2018         char str_rx[256], str_srv[256];
2019
2020         if (query_len < 3 || wpabuf_len(bsrv->query) < 3)
2021                 return 0; /* Too short to include DNS Type and Version */
2022         if (os_memcmp(query + query_len - 3,
2023                       wpabuf_head_u8(bsrv->query) + wpabuf_len(bsrv->query) - 3,
2024                       3) != 0)
2025                 return 0; /* Mismatch in DNS Type or Version */
2026         if (query_len == wpabuf_len(bsrv->query) &&
2027             os_memcmp(query, wpabuf_head(bsrv->query), query_len - 3) == 0)
2028                 return 1; /* Binary match */
2029
2030         if (p2p_sd_dns_uncompress(str_rx, sizeof(str_rx), query, query_len - 3,
2031                                   0))
2032                 return 0; /* Failed to uncompress query */
2033         if (p2p_sd_dns_uncompress(str_srv, sizeof(str_srv),
2034                                   wpabuf_head(bsrv->query),
2035                                   wpabuf_len(bsrv->query) - 3, 0))
2036                 return 0; /* Failed to uncompress service */
2037
2038         return os_strcmp(str_rx, str_srv) == 0;
2039 }
2040
2041
2042 static void wpas_sd_req_bonjour(struct wpa_supplicant *wpa_s,
2043                                 struct wpabuf *resp, u8 srv_trans_id,
2044                                 const u8 *query, size_t query_len)
2045 {
2046         struct p2p_srv_bonjour *bsrv;
2047         u8 *len_pos;
2048         int matches = 0;
2049
2050         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for Bonjour",
2051                           query, query_len);
2052         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
2053                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
2054                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_BONJOUR,
2055                                             srv_trans_id);
2056                 return;
2057         }
2058
2059         if (query_len == 0) {
2060                 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
2061                 return;
2062         }
2063
2064         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
2065                          struct p2p_srv_bonjour, list) {
2066                 if (!match_bonjour_query(bsrv, query, query_len))
2067                         continue;
2068
2069                 if (wpabuf_tailroom(resp) <
2070                     5 + query_len + wpabuf_len(bsrv->resp))
2071                         return;
2072
2073                 matches++;
2074
2075                 /* Length (to be filled) */
2076                 len_pos = wpabuf_put(resp, 2);
2077                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
2078                 wpabuf_put_u8(resp, srv_trans_id);
2079
2080                 /* Status Code */
2081                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2082                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
2083                                   wpabuf_head(bsrv->resp),
2084                                   wpabuf_len(bsrv->resp));
2085
2086                 /* Response Data */
2087                 wpabuf_put_data(resp, query, query_len); /* Key */
2088                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
2089
2090                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2091         }
2092
2093         if (matches == 0) {
2094                 wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour service not "
2095                            "available");
2096                 if (wpabuf_tailroom(resp) < 5)
2097                         return;
2098
2099                 /* Length (to be filled) */
2100                 len_pos = wpabuf_put(resp, 2);
2101                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
2102                 wpabuf_put_u8(resp, srv_trans_id);
2103
2104                 /* Status Code */
2105                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
2106                 /* Response Data: empty */
2107                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
2108                              2);
2109         }
2110 }
2111
2112
2113 static void wpas_sd_all_upnp(struct wpa_supplicant *wpa_s,
2114                              struct wpabuf *resp, u8 srv_trans_id)
2115 {
2116         struct p2p_srv_upnp *usrv;
2117         u8 *len_pos;
2118
2119         wpa_printf(MSG_DEBUG, "P2P: SD Request for all UPnP services");
2120
2121         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
2122                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
2123                 return;
2124         }
2125
2126         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
2127                          struct p2p_srv_upnp, list) {
2128                 if (wpabuf_tailroom(resp) < 5 + 1 + os_strlen(usrv->service))
2129                         return;
2130
2131                 /* Length (to be filled) */
2132                 len_pos = wpabuf_put(resp, 2);
2133                 wpabuf_put_u8(resp, P2P_SERV_UPNP);
2134                 wpabuf_put_u8(resp, srv_trans_id);
2135
2136                 /* Status Code */
2137                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2138                 /* Response Data */
2139                 wpabuf_put_u8(resp, usrv->version);
2140                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
2141                            usrv->service);
2142                 wpabuf_put_str(resp, usrv->service);
2143                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
2144                              2);
2145         }
2146 }
2147
2148
2149 static void wpas_sd_req_upnp(struct wpa_supplicant *wpa_s,
2150                              struct wpabuf *resp, u8 srv_trans_id,
2151                              const u8 *query, size_t query_len)
2152 {
2153         struct p2p_srv_upnp *usrv;
2154         u8 *len_pos;
2155         u8 version;
2156         char *str;
2157         int count = 0;
2158
2159         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for UPnP",
2160                           query, query_len);
2161
2162         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
2163                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
2164                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_UPNP,
2165                                             srv_trans_id);
2166                 return;
2167         }
2168
2169         if (query_len == 0) {
2170                 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
2171                 return;
2172         }
2173
2174         if (wpabuf_tailroom(resp) < 5)
2175                 return;
2176
2177         /* Length (to be filled) */
2178         len_pos = wpabuf_put(resp, 2);
2179         wpabuf_put_u8(resp, P2P_SERV_UPNP);
2180         wpabuf_put_u8(resp, srv_trans_id);
2181
2182         version = query[0];
2183         str = os_malloc(query_len);
2184         if (str == NULL)
2185                 return;
2186         os_memcpy(str, query + 1, query_len - 1);
2187         str[query_len - 1] = '\0';
2188
2189         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
2190                          struct p2p_srv_upnp, list) {
2191                 if (version != usrv->version)
2192                         continue;
2193
2194                 if (os_strcmp(str, "ssdp:all") != 0 &&
2195                     os_strstr(usrv->service, str) == NULL)
2196                         continue;
2197
2198                 if (wpabuf_tailroom(resp) < 2)
2199                         break;
2200                 if (count == 0) {
2201                         /* Status Code */
2202                         wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2203                         /* Response Data */
2204                         wpabuf_put_u8(resp, version);
2205                 } else
2206                         wpabuf_put_u8(resp, ',');
2207
2208                 count++;
2209
2210                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
2211                            usrv->service);
2212                 if (wpabuf_tailroom(resp) < os_strlen(usrv->service))
2213                         break;
2214                 wpabuf_put_str(resp, usrv->service);
2215         }
2216         os_free(str);
2217
2218         if (count == 0) {
2219                 wpa_printf(MSG_DEBUG, "P2P: Requested UPnP service not "
2220                            "available");
2221                 /* Status Code */
2222                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
2223                 /* Response Data: empty */
2224         }
2225
2226         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2227 }
2228
2229
2230 #ifdef CONFIG_WIFI_DISPLAY
2231 static void wpas_sd_req_wfd(struct wpa_supplicant *wpa_s,
2232                             struct wpabuf *resp, u8 srv_trans_id,
2233                             const u8 *query, size_t query_len)
2234 {
2235         const u8 *pos;
2236         u8 role;
2237         u8 *len_pos;
2238
2239         wpa_hexdump(MSG_DEBUG, "P2P: SD Request for WFD", query, query_len);
2240
2241         if (!wpa_s->global->wifi_display) {
2242                 wpa_printf(MSG_DEBUG, "P2P: WFD protocol not available");
2243                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_WIFI_DISPLAY,
2244                                             srv_trans_id);
2245                 return;
2246         }
2247
2248         if (query_len < 1) {
2249                 wpa_printf(MSG_DEBUG, "P2P: Missing WFD Requested Device "
2250                            "Role");
2251                 return;
2252         }
2253
2254         if (wpabuf_tailroom(resp) < 5)
2255                 return;
2256
2257         pos = query;
2258         role = *pos++;
2259         wpa_printf(MSG_DEBUG, "P2P: WSD for device role 0x%x", role);
2260
2261         /* TODO: role specific handling */
2262
2263         /* Length (to be filled) */
2264         len_pos = wpabuf_put(resp, 2);
2265         wpabuf_put_u8(resp, P2P_SERV_WIFI_DISPLAY);
2266         wpabuf_put_u8(resp, srv_trans_id);
2267         wpabuf_put_u8(resp, P2P_SD_SUCCESS); /* Status Code */
2268
2269         while (pos < query + query_len) {
2270                 if (*pos < MAX_WFD_SUBELEMS &&
2271                     wpa_s->global->wfd_subelem[*pos] &&
2272                     wpabuf_tailroom(resp) >=
2273                     wpabuf_len(wpa_s->global->wfd_subelem[*pos])) {
2274                         wpa_printf(MSG_DEBUG, "P2P: Add WSD response "
2275                                    "subelement %u", *pos);
2276                         wpabuf_put_buf(resp, wpa_s->global->wfd_subelem[*pos]);
2277                 }
2278                 pos++;
2279         }
2280
2281         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2282 }
2283 #endif /* CONFIG_WIFI_DISPLAY */
2284
2285
2286 static void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token,
2287                             u16 update_indic, const u8 *tlvs, size_t tlvs_len)
2288 {
2289         struct wpa_supplicant *wpa_s = ctx;
2290         const u8 *pos = tlvs;
2291         const u8 *end = tlvs + tlvs_len;
2292         const u8 *tlv_end;
2293         u16 slen;
2294         struct wpabuf *resp;
2295         u8 srv_proto, srv_trans_id;
2296         size_t buf_len;
2297         char *buf;
2298
2299         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Request TLVs",
2300                     tlvs, tlvs_len);
2301         buf_len = 2 * tlvs_len + 1;
2302         buf = os_malloc(buf_len);
2303         if (buf) {
2304                 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
2305                 wpa_msg_ctrl(wpa_s, MSG_INFO, P2P_EVENT_SERV_DISC_REQ "%d "
2306                              MACSTR " %u %u %s",
2307                              freq, MAC2STR(sa), dialog_token, update_indic,
2308                              buf);
2309                 os_free(buf);
2310         }
2311
2312         if (wpa_s->p2p_sd_over_ctrl_iface) {
2313                 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
2314                                            update_indic, tlvs, tlvs_len);
2315                 return; /* to be processed by an external program */
2316         }
2317
2318         resp = wpabuf_alloc(10000);
2319         if (resp == NULL)
2320                 return;
2321
2322         while (pos + 1 < end) {
2323                 wpa_printf(MSG_DEBUG, "P2P: Service Request TLV");
2324                 slen = WPA_GET_LE16(pos);
2325                 pos += 2;
2326                 if (pos + slen > end || slen < 2) {
2327                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Query Data "
2328                                    "length");
2329                         wpabuf_free(resp);
2330                         return;
2331                 }
2332                 tlv_end = pos + slen;
2333
2334                 srv_proto = *pos++;
2335                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
2336                            srv_proto);
2337                 srv_trans_id = *pos++;
2338                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
2339                            srv_trans_id);
2340
2341                 wpa_hexdump(MSG_MSGDUMP, "P2P: Query Data",
2342                             pos, tlv_end - pos);
2343
2344
2345                 if (wpa_s->force_long_sd) {
2346                         wpa_printf(MSG_DEBUG, "P2P: SD test - force long "
2347                                    "response");
2348                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
2349                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
2350                         goto done;
2351                 }
2352
2353                 switch (srv_proto) {
2354                 case P2P_SERV_ALL_SERVICES:
2355                         wpa_printf(MSG_DEBUG, "P2P: Service Discovery Request "
2356                                    "for all services");
2357                         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp) &&
2358                             dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
2359                                 wpa_printf(MSG_DEBUG, "P2P: No service "
2360                                            "discovery protocols available");
2361                                 wpas_sd_add_proto_not_avail(
2362                                         resp, P2P_SERV_ALL_SERVICES,
2363                                         srv_trans_id);
2364                                 break;
2365                         }
2366                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
2367                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
2368                         break;
2369                 case P2P_SERV_BONJOUR:
2370                         wpas_sd_req_bonjour(wpa_s, resp, srv_trans_id,
2371                                             pos, tlv_end - pos);
2372                         break;
2373                 case P2P_SERV_UPNP:
2374                         wpas_sd_req_upnp(wpa_s, resp, srv_trans_id,
2375                                          pos, tlv_end - pos);
2376                         break;
2377 #ifdef CONFIG_WIFI_DISPLAY
2378                 case P2P_SERV_WIFI_DISPLAY:
2379                         wpas_sd_req_wfd(wpa_s, resp, srv_trans_id,
2380                                         pos, tlv_end - pos);
2381                         break;
2382 #endif /* CONFIG_WIFI_DISPLAY */
2383                 default:
2384                         wpa_printf(MSG_DEBUG, "P2P: Unavailable service "
2385                                    "protocol %u", srv_proto);
2386                         wpas_sd_add_proto_not_avail(resp, srv_proto,
2387                                                     srv_trans_id);
2388                         break;
2389                 }
2390
2391                 pos = tlv_end;
2392         }
2393
2394 done:
2395         wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
2396                                    update_indic, tlvs, tlvs_len);
2397
2398         wpas_p2p_sd_response(wpa_s, freq, sa, dialog_token, resp);
2399
2400         wpabuf_free(resp);
2401 }
2402
2403
2404 static void wpas_sd_response(void *ctx, const u8 *sa, u16 update_indic,
2405                              const u8 *tlvs, size_t tlvs_len)
2406 {
2407         struct wpa_supplicant *wpa_s = ctx;
2408         const u8 *pos = tlvs;
2409         const u8 *end = tlvs + tlvs_len;
2410         const u8 *tlv_end;
2411         u16 slen;
2412         size_t buf_len;
2413         char *buf;
2414
2415         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Response TLVs",
2416                     tlvs, tlvs_len);
2417         if (tlvs_len > 1500) {
2418                 /* TODO: better way for handling this */
2419                 wpa_msg_ctrl(wpa_s, MSG_INFO,
2420                              P2P_EVENT_SERV_DISC_RESP MACSTR
2421                              " %u <long response: %u bytes>",
2422                              MAC2STR(sa), update_indic,
2423                              (unsigned int) tlvs_len);
2424         } else {
2425                 buf_len = 2 * tlvs_len + 1;
2426                 buf = os_malloc(buf_len);
2427                 if (buf) {
2428                         wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
2429                         wpa_msg_ctrl(wpa_s, MSG_INFO,
2430                                      P2P_EVENT_SERV_DISC_RESP MACSTR " %u %s",
2431                                      MAC2STR(sa), update_indic, buf);
2432                         os_free(buf);
2433                 }
2434         }
2435
2436         while (pos < end) {
2437                 u8 srv_proto, srv_trans_id, status;
2438
2439                 wpa_printf(MSG_DEBUG, "P2P: Service Response TLV");
2440                 slen = WPA_GET_LE16(pos);
2441                 pos += 2;
2442                 if (pos + slen > end || slen < 3) {
2443                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Response Data "
2444                                    "length");
2445                         return;
2446                 }
2447                 tlv_end = pos + slen;
2448
2449                 srv_proto = *pos++;
2450                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
2451                            srv_proto);
2452                 srv_trans_id = *pos++;
2453                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
2454                            srv_trans_id);
2455                 status = *pos++;
2456                 wpa_printf(MSG_DEBUG, "P2P: Status Code ID %u",
2457                            status);
2458
2459                 wpa_hexdump(MSG_MSGDUMP, "P2P: Response Data",
2460                             pos, tlv_end - pos);
2461
2462                 pos = tlv_end;
2463         }
2464
2465         wpas_notify_p2p_sd_response(wpa_s, sa, update_indic, tlvs, tlvs_len);
2466 }
2467
2468
2469 u64 wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst,
2470                         const struct wpabuf *tlvs)
2471 {
2472         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2473                 return 0;
2474         return (uintptr_t) p2p_sd_request(wpa_s->global->p2p, dst, tlvs);
2475 }
2476
2477
2478 u64 wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst,
2479                              u8 version, const char *query)
2480 {
2481         struct wpabuf *tlvs;
2482         u64 ret;
2483
2484         tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query));
2485         if (tlvs == NULL)
2486                 return 0;
2487         wpabuf_put_le16(tlvs, 1 + 1 + 1 + os_strlen(query));
2488         wpabuf_put_u8(tlvs, P2P_SERV_UPNP); /* Service Protocol Type */
2489         wpabuf_put_u8(tlvs, 1); /* Service Transaction ID */
2490         wpabuf_put_u8(tlvs, version);
2491         wpabuf_put_str(tlvs, query);
2492         ret = wpas_p2p_sd_request(wpa_s, dst, tlvs);
2493         wpabuf_free(tlvs);
2494         return ret;
2495 }
2496
2497
2498 #ifdef CONFIG_WIFI_DISPLAY
2499
2500 static u64 wpas_p2p_sd_request_wfd(struct wpa_supplicant *wpa_s, const u8 *dst,
2501                                    const struct wpabuf *tlvs)
2502 {
2503         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2504                 return 0;
2505         return (uintptr_t) p2p_sd_request_wfd(wpa_s->global->p2p, dst, tlvs);
2506 }
2507
2508
2509 #define MAX_WFD_SD_SUBELEMS 20
2510
2511 static void wfd_add_sd_req_role(struct wpabuf *tlvs, u8 id, u8 role,
2512                                 const char *subelems)
2513 {
2514         u8 *len;
2515         const char *pos;
2516         int val;
2517         int count = 0;
2518
2519         len = wpabuf_put(tlvs, 2);
2520         wpabuf_put_u8(tlvs, P2P_SERV_WIFI_DISPLAY); /* Service Protocol Type */
2521         wpabuf_put_u8(tlvs, id); /* Service Transaction ID */
2522
2523         wpabuf_put_u8(tlvs, role);
2524
2525         pos = subelems;
2526         while (*pos) {
2527                 val = atoi(pos);
2528                 if (val >= 0 && val < 256) {
2529                         wpabuf_put_u8(tlvs, val);
2530                         count++;
2531                         if (count == MAX_WFD_SD_SUBELEMS)
2532                                 break;
2533                 }
2534                 pos = os_strchr(pos + 1, ',');
2535                 if (pos == NULL)
2536                         break;
2537                 pos++;
2538         }
2539
2540         WPA_PUT_LE16(len, (u8 *) wpabuf_put(tlvs, 0) - len - 2);
2541 }
2542
2543
2544 u64 wpas_p2p_sd_request_wifi_display(struct wpa_supplicant *wpa_s,
2545                                      const u8 *dst, const char *role)
2546 {
2547         struct wpabuf *tlvs;
2548         u64 ret;
2549         const char *subelems;
2550         u8 id = 1;
2551
2552         subelems = os_strchr(role, ' ');
2553         if (subelems == NULL)
2554                 return 0;
2555         subelems++;
2556
2557         tlvs = wpabuf_alloc(4 * (2 + 1 + 1 + 1 + MAX_WFD_SD_SUBELEMS));
2558         if (tlvs == NULL)
2559                 return 0;
2560
2561         if (os_strstr(role, "[source]"))
2562                 wfd_add_sd_req_role(tlvs, id++, 0x00, subelems);
2563         if (os_strstr(role, "[pri-sink]"))
2564                 wfd_add_sd_req_role(tlvs, id++, 0x01, subelems);
2565         if (os_strstr(role, "[sec-sink]"))
2566                 wfd_add_sd_req_role(tlvs, id++, 0x02, subelems);
2567         if (os_strstr(role, "[source+sink]"))
2568                 wfd_add_sd_req_role(tlvs, id++, 0x03, subelems);
2569
2570         ret = wpas_p2p_sd_request_wfd(wpa_s, dst, tlvs);
2571         wpabuf_free(tlvs);
2572         return ret;
2573 }
2574
2575 #endif /* CONFIG_WIFI_DISPLAY */
2576
2577
2578 int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, u64 req)
2579 {
2580         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2581                 return -1;
2582         return p2p_sd_cancel_request(wpa_s->global->p2p,
2583                                      (void *) (uintptr_t) req);
2584 }
2585
2586
2587 void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq,
2588                           const u8 *dst, u8 dialog_token,
2589                           const struct wpabuf *resp_tlvs)
2590 {
2591         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2592                 return;
2593         p2p_sd_response(wpa_s->global->p2p, freq, dst, dialog_token,
2594                         resp_tlvs);
2595 }
2596
2597
2598 void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s)
2599 {
2600         if (wpa_s->global->p2p)
2601                 p2p_sd_service_update(wpa_s->global->p2p);
2602 }
2603
2604
2605 static void wpas_p2p_srv_bonjour_free(struct p2p_srv_bonjour *bsrv)
2606 {
2607         dl_list_del(&bsrv->list);
2608         wpabuf_free(bsrv->query);
2609         wpabuf_free(bsrv->resp);
2610         os_free(bsrv);
2611 }
2612
2613
2614 static void wpas_p2p_srv_upnp_free(struct p2p_srv_upnp *usrv)
2615 {
2616         dl_list_del(&usrv->list);
2617         os_free(usrv->service);
2618         os_free(usrv);
2619 }
2620
2621
2622 void wpas_p2p_service_flush(struct wpa_supplicant *wpa_s)
2623 {
2624         struct p2p_srv_bonjour *bsrv, *bn;
2625         struct p2p_srv_upnp *usrv, *un;
2626
2627         dl_list_for_each_safe(bsrv, bn, &wpa_s->global->p2p_srv_bonjour,
2628                               struct p2p_srv_bonjour, list)
2629                 wpas_p2p_srv_bonjour_free(bsrv);
2630
2631         dl_list_for_each_safe(usrv, un, &wpa_s->global->p2p_srv_upnp,
2632                               struct p2p_srv_upnp, list)
2633                 wpas_p2p_srv_upnp_free(usrv);
2634
2635         wpas_p2p_sd_service_update(wpa_s);
2636 }
2637
2638
2639 int wpas_p2p_service_add_bonjour(struct wpa_supplicant *wpa_s,
2640                                  struct wpabuf *query, struct wpabuf *resp)
2641 {
2642         struct p2p_srv_bonjour *bsrv;
2643
2644         bsrv = os_zalloc(sizeof(*bsrv));
2645         if (bsrv == NULL)
2646                 return -1;
2647         bsrv->query = query;
2648         bsrv->resp = resp;
2649         dl_list_add(&wpa_s->global->p2p_srv_bonjour, &bsrv->list);
2650
2651         wpas_p2p_sd_service_update(wpa_s);
2652         return 0;
2653 }
2654
2655
2656 int wpas_p2p_service_del_bonjour(struct wpa_supplicant *wpa_s,
2657                                  const struct wpabuf *query)
2658 {
2659         struct p2p_srv_bonjour *bsrv;
2660
2661         bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
2662         if (bsrv == NULL)
2663                 return -1;
2664         wpas_p2p_srv_bonjour_free(bsrv);
2665         wpas_p2p_sd_service_update(wpa_s);
2666         return 0;
2667 }
2668
2669
2670 int wpas_p2p_service_add_upnp(struct wpa_supplicant *wpa_s, u8 version,
2671                               const char *service)
2672 {
2673         struct p2p_srv_upnp *usrv;
2674
2675         if (wpas_p2p_service_get_upnp(wpa_s, version, service))
2676                 return 0; /* Already listed */
2677         usrv = os_zalloc(sizeof(*usrv));
2678         if (usrv == NULL)
2679                 return -1;
2680         usrv->version = version;
2681         usrv->service = os_strdup(service);
2682         if (usrv->service == NULL) {
2683                 os_free(usrv);
2684                 return -1;
2685         }
2686         dl_list_add(&wpa_s->global->p2p_srv_upnp, &usrv->list);
2687
2688         wpas_p2p_sd_service_update(wpa_s);
2689         return 0;
2690 }
2691
2692
2693 int wpas_p2p_service_del_upnp(struct wpa_supplicant *wpa_s, u8 version,
2694                               const char *service)
2695 {
2696         struct p2p_srv_upnp *usrv;
2697
2698         usrv = wpas_p2p_service_get_upnp(wpa_s, version, service);
2699         if (usrv == NULL)
2700                 return -1;
2701         wpas_p2p_srv_upnp_free(usrv);
2702         wpas_p2p_sd_service_update(wpa_s);
2703         return 0;
2704 }
2705
2706
2707 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2708                                          const u8 *peer, const char *params,
2709                                          unsigned int generated_pin)
2710 {
2711         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2712                        " %08d%s", MAC2STR(peer), generated_pin, params);
2713 }
2714
2715
2716 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2717                                         const u8 *peer, const char *params)
2718 {
2719         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2720                        "%s", MAC2STR(peer), params);
2721 }
2722
2723
2724 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2725                                const u8 *dev_addr, const u8 *pri_dev_type,
2726                                const char *dev_name, u16 supp_config_methods,
2727                                u8 dev_capab, u8 group_capab, const u8 *group_id,
2728                                size_t group_id_len)
2729 {
2730         struct wpa_supplicant *wpa_s = ctx;
2731         char devtype[WPS_DEV_TYPE_BUFSIZE];
2732         char params[300];
2733         u8 empty_dev_type[8];
2734         unsigned int generated_pin = 0;
2735         struct wpa_supplicant *group = NULL;
2736
2737         if (group_id) {
2738                 for (group = wpa_s->global->ifaces; group; group = group->next)
2739                 {
2740                         struct wpa_ssid *s = group->current_ssid;
2741                         if (s != NULL &&
2742                             s->mode == WPAS_MODE_P2P_GO &&
2743                             group_id_len - ETH_ALEN == s->ssid_len &&
2744                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2745                                       s->ssid_len) == 0)
2746                                 break;
2747                 }
2748         }
2749
2750         if (pri_dev_type == NULL) {
2751                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2752                 pri_dev_type = empty_dev_type;
2753         }
2754         os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2755                     " pri_dev_type=%s name='%s' config_methods=0x%x "
2756                     "dev_capab=0x%x group_capab=0x%x%s%s",
2757                     MAC2STR(dev_addr),
2758                     wps_dev_type_bin2str(pri_dev_type, devtype,
2759                                          sizeof(devtype)),
2760                     dev_name, supp_config_methods, dev_capab, group_capab,
2761                     group ? " group=" : "",
2762                     group ? group->ifname : "");
2763         params[sizeof(params) - 1] = '\0';
2764
2765         if (config_methods & WPS_CONFIG_DISPLAY) {
2766                 generated_pin = wps_generate_pin();
2767                 wpas_prov_disc_local_display(wpa_s, peer, params,
2768                                              generated_pin);
2769         } else if (config_methods & WPS_CONFIG_KEYPAD)
2770                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2771         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2772                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2773                                MACSTR "%s", MAC2STR(peer), params);
2774
2775         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2776                                             P2P_PROV_DISC_SUCCESS,
2777                                             config_methods, generated_pin);
2778 }
2779
2780
2781 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2782 {
2783         struct wpa_supplicant *wpa_s = ctx;
2784         unsigned int generated_pin = 0;
2785         char params[20];
2786
2787         if (wpa_s->pending_pd_before_join &&
2788             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2789              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2790                 wpa_s->pending_pd_before_join = 0;
2791                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2792                            "join-existing-group operation");
2793                 wpas_p2p_join_start(wpa_s);
2794                 return;
2795         }
2796
2797         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2798             wpa_s->pending_pd_use == AUTO_PD_GO_NEG)
2799                 os_snprintf(params, sizeof(params), " peer_go=%d",
2800                             wpa_s->pending_pd_use == AUTO_PD_JOIN);
2801         else
2802                 params[0] = '\0';
2803
2804         if (config_methods & WPS_CONFIG_DISPLAY)
2805                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2806         else if (config_methods & WPS_CONFIG_KEYPAD) {
2807                 generated_pin = wps_generate_pin();
2808                 wpas_prov_disc_local_display(wpa_s, peer, params,
2809                                              generated_pin);
2810         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2811                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2812                                MACSTR "%s", MAC2STR(peer), params);
2813
2814         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2815                                             P2P_PROV_DISC_SUCCESS,
2816                                             config_methods, generated_pin);
2817 }
2818
2819
2820 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2821                                 enum p2p_prov_disc_status status)
2822 {
2823         struct wpa_supplicant *wpa_s = ctx;
2824
2825         if (wpa_s->p2p_fallback_to_go_neg) {
2826                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2827                         "failed - fall back to GO Negotiation");
2828                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2829                 return;
2830         }
2831
2832         if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2833                 wpa_s->pending_pd_before_join = 0;
2834                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2835                            "join-existing-group operation (no ACK for PD "
2836                            "Req attempts)");
2837                 wpas_p2p_join_start(wpa_s);
2838                 return;
2839         }
2840
2841         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2842                        " p2p_dev_addr=" MACSTR " status=%d",
2843                        MAC2STR(peer), status);
2844
2845         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2846                                             status, 0, 0);
2847 }
2848
2849
2850 static int freq_included(const struct p2p_channels *channels, unsigned int freq)
2851 {
2852         if (channels == NULL)
2853                 return 1; /* Assume no restrictions */
2854         return p2p_channels_includes_freq(channels, freq);
2855
2856 }
2857
2858
2859 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2860                                   const u8 *go_dev_addr, const u8 *ssid,
2861                                   size_t ssid_len, int *go, u8 *group_bssid,
2862                                   int *force_freq, int persistent_group,
2863                                   const struct p2p_channels *channels)
2864 {
2865         struct wpa_supplicant *wpa_s = ctx;
2866         struct wpa_ssid *s;
2867         int res;
2868         struct wpa_supplicant *grp;
2869
2870         if (!persistent_group) {
2871                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2872                            " to join an active group (SSID: %s)",
2873                            MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2874                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2875                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2876                      == 0 ||
2877                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2878                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2879                                    "authorized invitation");
2880                         goto accept_inv;
2881                 }
2882                 /*
2883                  * Do not accept the invitation automatically; notify user and
2884                  * request approval.
2885                  */
2886                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2887         }
2888
2889         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2890         if (grp) {
2891                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2892                            "running persistent group");
2893                 if (*go)
2894                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2895                 goto accept_inv;
2896         }
2897
2898         if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2899             os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2900                 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2901                            "invitation to re-invoke a persistent group");
2902         } else if (!wpa_s->conf->persistent_reconnect)
2903                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2904
2905         for (s = wpa_s->conf->ssid; s; s = s->next) {
2906                 if (s->disabled == 2 &&
2907                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2908                     s->ssid_len == ssid_len &&
2909                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2910                         break;
2911         }
2912
2913         if (!s) {
2914                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2915                            " requested reinvocation of an unknown group",
2916                            MAC2STR(sa));
2917                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2918         }
2919
2920         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2921                 *go = 1;
2922                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2923                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2924                                    "interface is already in use - reject "
2925                                    "invitation");
2926                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2927                 }
2928                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2929         } else if (s->mode == WPAS_MODE_P2P_GO) {
2930                 *go = 1;
2931                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2932                 {
2933                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2934                                    "interface address for the group");
2935                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2936                 }
2937                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2938                           ETH_ALEN);
2939         }
2940
2941 accept_inv:
2942         wpas_p2p_set_own_freq_preference(wpa_s, 0);
2943
2944         /* Get one of the frequencies currently in use */
2945         if (wpas_p2p_valid_oper_freqs(wpa_s, &res, 1) > 0) {
2946                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
2947                 wpas_p2p_set_own_freq_preference(wpa_s, res);
2948
2949                 if (wpa_s->num_multichan_concurrent < 2 ||
2950                     wpas_p2p_num_unused_channels(wpa_s) < 1) {
2951                         wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
2952                         *force_freq = res;
2953                 }
2954         }
2955
2956         if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
2957             wpas_p2p_num_unused_channels(wpa_s) > 0) {
2958                 if (*go == 0) {
2959                         /* We are the client */
2960                         wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
2961                                    "running a GO but we are capable of MCC, "
2962                                    "figure out the best channel to use");
2963                         *force_freq = 0;
2964                 } else if (!freq_included(channels, *force_freq)) {
2965                         /* We are the GO, and *force_freq is not in the
2966                          * intersection */
2967                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
2968                                    "in intersection but we are capable of MCC, "
2969                                    "figure out the best channel to use",
2970                                    *force_freq);
2971                         *force_freq = 0;
2972                 }
2973         }
2974
2975         return P2P_SC_SUCCESS;
2976 }
2977
2978
2979 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
2980                                      const u8 *ssid, size_t ssid_len,
2981                                      const u8 *go_dev_addr, u8 status,
2982                                      int op_freq)
2983 {
2984         struct wpa_supplicant *wpa_s = ctx;
2985         struct wpa_ssid *s;
2986
2987         for (s = wpa_s->conf->ssid; s; s = s->next) {
2988                 if (s->disabled == 2 &&
2989                     s->ssid_len == ssid_len &&
2990                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2991                         break;
2992         }
2993
2994         if (status == P2P_SC_SUCCESS) {
2995                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2996                            " was accepted; op_freq=%d MHz, SSID=%s",
2997                            MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
2998                 if (s) {
2999                         int go = s->mode == WPAS_MODE_P2P_GO;
3000                         wpas_p2p_group_add_persistent(
3001                                 wpa_s, s, go, go ? op_freq : 0, 0, 0, NULL,
3002                                 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0);
3003                 } else if (bssid) {
3004                         wpa_s->user_initiated_pd = 0;
3005                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
3006                                       wpa_s->p2p_wps_method, 0,
3007                                       ssid, ssid_len);
3008                 }
3009                 return;
3010         }
3011
3012         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3013                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3014                            " was rejected (status %u)", MAC2STR(sa), status);
3015                 return;
3016         }
3017
3018         if (!s) {
3019                 if (bssid) {
3020                         wpa_msg_global(wpa_s, MSG_INFO,
3021                                        P2P_EVENT_INVITATION_RECEIVED
3022                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3023                                        " bssid=" MACSTR " unknown-network",
3024                                        MAC2STR(sa), MAC2STR(go_dev_addr),
3025                                        MAC2STR(bssid));
3026                 } else {
3027                         wpa_msg_global(wpa_s, MSG_INFO,
3028                                        P2P_EVENT_INVITATION_RECEIVED
3029                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3030                                        " unknown-network",
3031                                        MAC2STR(sa), MAC2STR(go_dev_addr));
3032                 }
3033                 return;
3034         }
3035
3036         if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
3037                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3038                                "sa=" MACSTR " persistent=%d freq=%d",
3039                                MAC2STR(sa), s->id, op_freq);
3040         } else {
3041                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3042                                "sa=" MACSTR " persistent=%d",
3043                                MAC2STR(sa), s->id);
3044         }
3045 }
3046
3047
3048 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
3049                                         struct wpa_ssid *ssid,
3050                                         const u8 *peer, int inv)
3051 {
3052         size_t i;
3053
3054         if (ssid == NULL)
3055                 return;
3056
3057         for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
3058                 if (os_memcmp(ssid->p2p_client_list + i * ETH_ALEN, peer,
3059                               ETH_ALEN) == 0)
3060                         break;
3061         }
3062         if (i >= ssid->num_p2p_clients) {
3063                 if (ssid->mode != WPAS_MODE_P2P_GO &&
3064                     os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
3065                         wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
3066                                    "due to invitation result", ssid->id);
3067                         wpas_notify_network_removed(wpa_s, ssid);
3068                         wpa_config_remove_network(wpa_s->conf, ssid->id);
3069                         return;
3070                 }
3071                 return; /* Peer not found in client list */
3072         }
3073
3074         wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
3075                    "group %d client list%s",
3076                    MAC2STR(peer), ssid->id,
3077                    inv ? " due to invitation result" : "");
3078         os_memmove(ssid->p2p_client_list + i * ETH_ALEN,
3079                    ssid->p2p_client_list + (i + 1) * ETH_ALEN,
3080                    (ssid->num_p2p_clients - i - 1) * ETH_ALEN);
3081         ssid->num_p2p_clients--;
3082 #ifndef CONFIG_NO_CONFIG_WRITE
3083         if (wpa_s->parent->conf->update_config &&
3084             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
3085                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
3086 #endif /* CONFIG_NO_CONFIG_WRITE */
3087 }
3088
3089
3090 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
3091                                           const u8 *peer)
3092 {
3093         struct wpa_ssid *ssid;
3094
3095         wpa_s = wpa_s->global->p2p_invite_group;
3096         if (wpa_s == NULL)
3097                 return; /* No known invitation group */
3098         ssid = wpa_s->current_ssid;
3099         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
3100             !ssid->p2p_persistent_group)
3101                 return; /* Not operating as a GO in persistent group */
3102         ssid = wpas_p2p_get_persistent(wpa_s->parent, peer,
3103                                        ssid->ssid, ssid->ssid_len);
3104         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3105 }
3106
3107
3108 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
3109                                    const struct p2p_channels *channels,
3110                                    const u8 *peer, int neg_freq)
3111 {
3112         struct wpa_supplicant *wpa_s = ctx;
3113         struct wpa_ssid *ssid;
3114         int freq;
3115
3116         if (bssid) {
3117                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3118                                "status=%d " MACSTR,
3119                                status, MAC2STR(bssid));
3120         } else {
3121                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3122                                "status=%d ", status);
3123         }
3124         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
3125
3126         wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
3127                    status, MAC2STR(peer));
3128         if (wpa_s->pending_invite_ssid_id == -1) {
3129                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
3130                         wpas_remove_persistent_client(wpa_s, peer);
3131                 return; /* Invitation to active group */
3132         }
3133
3134         if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3135                 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
3136                            "invitation exchange to indicate readiness for "
3137                            "re-invocation");
3138         }
3139
3140         if (status != P2P_SC_SUCCESS) {
3141                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
3142                         ssid = wpa_config_get_network(
3143                                 wpa_s->conf, wpa_s->pending_invite_ssid_id);
3144                         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3145                 }
3146                 wpas_p2p_remove_pending_group_interface(wpa_s);
3147                 return;
3148         }
3149
3150         ssid = wpa_config_get_network(wpa_s->conf,
3151                                       wpa_s->pending_invite_ssid_id);
3152         if (ssid == NULL) {
3153                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
3154                            "data matching with invitation");
3155                 return;
3156         }
3157
3158         /*
3159          * The peer could have missed our ctrl::ack frame for Invitation
3160          * Response and continue retransmitting the frame. To reduce the
3161          * likelihood of the peer not getting successful TX status for the
3162          * Invitation Response frame, wait a short time here before starting
3163          * the persistent group so that we will remain on the current channel to
3164          * acknowledge any possible retransmission from the peer.
3165          */
3166         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
3167                 "starting persistent group");
3168         os_sleep(0, 50000);
3169
3170         freq = wpa_s->p2p_persistent_go_freq;
3171         if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
3172             freq_included(channels, neg_freq)) {
3173                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use frequence %d MHz from invitation for GO mode",
3174                         neg_freq);
3175                 freq = neg_freq;
3176         }
3177
3178         wpas_p2p_group_add_persistent(wpa_s, ssid,
3179                                       ssid->mode == WPAS_MODE_P2P_GO,
3180                                       freq,
3181                                       wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
3182                                       channels,
3183                                       ssid->mode == WPAS_MODE_P2P_GO ?
3184                                       P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3185                                       0);
3186 }
3187
3188
3189 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
3190                                     unsigned int freq)
3191 {
3192         return freq_range_list_includes(&global->p2p_disallow_freq, freq);
3193 }
3194
3195
3196 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
3197 {
3198         reg->channel[reg->channels] = chan;
3199         reg->channels++;
3200 }
3201
3202
3203 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3204                                      struct p2p_channels *chan,
3205                                      struct p2p_channels *cli_chan)
3206 {
3207         int i, cla = 0;
3208
3209         os_memset(cli_chan, 0, sizeof(*cli_chan));
3210
3211         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3212                    "band");
3213
3214         /* Operating class 81 - 2.4 GHz band channels 1..13 */
3215         chan->reg_class[cla].reg_class = 81;
3216         chan->reg_class[cla].channels = 0;
3217         for (i = 0; i < 11; i++) {
3218                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3219                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3220         }
3221         if (chan->reg_class[cla].channels)
3222                 cla++;
3223
3224         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3225                    "band");
3226
3227         /* Operating class 115 - 5 GHz, channels 36-48 */
3228         chan->reg_class[cla].reg_class = 115;
3229         chan->reg_class[cla].channels = 0;
3230         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3231                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3232         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3233                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3234         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3235                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3236         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3237                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3238         if (chan->reg_class[cla].channels)
3239                 cla++;
3240
3241         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3242                    "band");
3243
3244         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3245         chan->reg_class[cla].reg_class = 124;
3246         chan->reg_class[cla].channels = 0;
3247         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3248                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3249         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3250                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3251         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3252                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3253         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3254                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3255         if (chan->reg_class[cla].channels)
3256                 cla++;
3257
3258         chan->reg_classes = cla;
3259         return 0;
3260 }
3261
3262
3263 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
3264                                           u16 num_modes,
3265                                           enum hostapd_hw_mode mode)
3266 {
3267         u16 i;
3268
3269         for (i = 0; i < num_modes; i++) {
3270                 if (modes[i].mode == mode)
3271                         return &modes[i];
3272         }
3273
3274         return NULL;
3275 }
3276
3277
3278 enum chan_allowed {
3279         NOT_ALLOWED, PASSIVE_ONLY, ALLOWED
3280 };
3281
3282 static int has_channel(struct wpa_global *global,
3283                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
3284 {
3285         int i;
3286         unsigned int freq;
3287
3288         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3289                 chan * 5;
3290         if (wpas_p2p_disallowed_freq(global, freq))
3291                 return NOT_ALLOWED;
3292
3293         for (i = 0; i < mode->num_channels; i++) {
3294                 if (mode->channels[i].chan == chan) {
3295                         if (flags)
3296                                 *flags = mode->channels[i].flag;
3297                         if (mode->channels[i].flag &
3298                             (HOSTAPD_CHAN_DISABLED |
3299                              HOSTAPD_CHAN_RADAR))
3300                                 return NOT_ALLOWED;
3301                         if (mode->channels[i].flag &
3302                             (HOSTAPD_CHAN_PASSIVE_SCAN |
3303                              HOSTAPD_CHAN_NO_IBSS))
3304                                 return PASSIVE_ONLY;
3305                         return ALLOWED;
3306                 }
3307         }
3308
3309         return NOT_ALLOWED;
3310 }
3311
3312
3313 struct p2p_oper_class_map {
3314         enum hostapd_hw_mode mode;
3315         u8 op_class;
3316         u8 min_chan;
3317         u8 max_chan;
3318         u8 inc;
3319         enum { BW20, BW40PLUS, BW40MINUS, BW80 } bw;
3320 };
3321
3322 static struct p2p_oper_class_map op_class[] = {
3323         { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
3324 #if 0 /* Do not enable HT40 on 2 GHz for now */
3325         { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
3326         { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
3327 #endif
3328         { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
3329         { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
3330         { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
3331         { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
3332         { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
3333         { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
3334
3335         /*
3336          * IEEE P802.11ac/D7.0 Table E-4 actually talks about channel center
3337          * frequency index 42, 58, 106, 122, 138, 155 with channel spacing of
3338          * 80 MHz, but currently use the following definition for simplicity
3339          * (these center frequencies are not actual channels, which makes
3340          * has_channel() fail). wpas_p2p_verify_80mhz() should take care of
3341          * removing invalid channels.
3342          */
3343         { HOSTAPD_MODE_IEEE80211A, 128, 36, 161, 4, BW80 },
3344         { -1, 0, 0, 0, 0, BW20 }
3345 };
3346
3347
3348 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3349                                      struct hostapd_hw_modes *mode,
3350                                      u8 channel)
3351 {
3352         u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3353         unsigned int i;
3354
3355         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3356                 return 0;
3357
3358         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3359                 /*
3360                  * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3361                  * so the center channel is 6 channels away from the start/end.
3362                  */
3363                 if (channel >= center_channels[i] - 6 &&
3364                     channel <= center_channels[i] + 6)
3365                         return center_channels[i];
3366
3367         return 0;
3368 }
3369
3370
3371 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3372                                                struct hostapd_hw_modes *mode,
3373                                                u8 channel, u8 bw)
3374 {
3375         u8 center_chan;
3376         int i, flags;
3377         enum chan_allowed res, ret = ALLOWED;
3378
3379         center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3380         if (!center_chan)
3381                 return NOT_ALLOWED;
3382         if (center_chan >= 58 && center_chan <= 138)
3383                 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3384
3385         /* check all the channels are available */
3386         for (i = 0; i < 4; i++) {
3387                 int adj_chan = center_chan - 6 + i * 4;
3388
3389                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3390                 if (res == NOT_ALLOWED)
3391                         return NOT_ALLOWED;
3392                 if (res == PASSIVE_ONLY)
3393                         ret = PASSIVE_ONLY;
3394
3395                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3396                         return NOT_ALLOWED;
3397                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3398                         return NOT_ALLOWED;
3399                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3400                         return NOT_ALLOWED;
3401                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3402                         return NOT_ALLOWED;
3403         }
3404
3405         return ret;
3406 }
3407
3408
3409 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3410                                                  struct hostapd_hw_modes *mode,
3411                                                  u8 channel, u8 bw)
3412 {
3413         int flag;
3414         enum chan_allowed res, res2;
3415
3416         res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3417         if (bw == BW40MINUS) {
3418                 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3419                         return NOT_ALLOWED;
3420                 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3421         } else if (bw == BW40PLUS) {
3422                 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3423                         return NOT_ALLOWED;
3424                 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3425         } else if (bw == BW80) {
3426                 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3427         }
3428
3429         if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3430                 return NOT_ALLOWED;
3431         if (res == PASSIVE_ONLY || res2 == PASSIVE_ONLY)
3432                 return PASSIVE_ONLY;
3433         return res;
3434 }
3435
3436
3437 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3438                                    struct p2p_channels *chan,
3439                                    struct p2p_channels *cli_chan)
3440 {
3441         struct hostapd_hw_modes *mode;
3442         int cla, op, cli_cla;
3443
3444         if (wpa_s->hw.modes == NULL) {
3445                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3446                            "of all supported channels; assume dualband "
3447                            "support");
3448                 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3449         }
3450
3451         cla = cli_cla = 0;
3452
3453         for (op = 0; op_class[op].op_class; op++) {
3454                 struct p2p_oper_class_map *o = &op_class[op];
3455                 u8 ch;
3456                 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3457
3458                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3459                 if (mode == NULL)
3460                         continue;
3461                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3462                         enum chan_allowed res;
3463                         res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3464                         if (res == ALLOWED) {
3465                                 if (reg == NULL) {
3466                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3467                                                    o->op_class);
3468                                         reg = &chan->reg_class[cla];
3469                                         cla++;
3470                                         reg->reg_class = o->op_class;
3471                                 }
3472                                 reg->channel[reg->channels] = ch;
3473                                 reg->channels++;
3474                         } else if (res == PASSIVE_ONLY &&
3475                                    wpa_s->conf->p2p_add_cli_chan) {
3476                                 if (cli_reg == NULL) {
3477                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3478                                                    o->op_class);
3479                                         cli_reg = &cli_chan->reg_class[cli_cla];
3480                                         cli_cla++;
3481                                         cli_reg->reg_class = o->op_class;
3482                                 }
3483                                 cli_reg->channel[cli_reg->channels] = ch;
3484                                 cli_reg->channels++;
3485                         }
3486                 }
3487                 if (reg) {
3488                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3489                                     reg->channel, reg->channels);
3490                 }
3491                 if (cli_reg) {
3492                         wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3493                                     cli_reg->channel, cli_reg->channels);
3494                 }
3495         }
3496
3497         chan->reg_classes = cla;
3498         cli_chan->reg_classes = cli_cla;
3499
3500         return 0;
3501 }
3502
3503
3504 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3505                            struct hostapd_hw_modes *mode, u8 channel)
3506 {
3507         int op;
3508         enum chan_allowed ret;
3509
3510         for (op = 0; op_class[op].op_class; op++) {
3511                 struct p2p_oper_class_map *o = &op_class[op];
3512                 u8 ch;
3513
3514                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3515                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3516                             o->bw == BW20 || ch != channel)
3517                                 continue;
3518                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3519                         if (ret == ALLOWED)
3520                                 return (o->bw == BW40MINUS) ? -1 : 1;
3521                 }
3522         }
3523         return 0;
3524 }
3525
3526
3527 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3528                               struct hostapd_hw_modes *mode, u8 channel)
3529 {
3530         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3531                 return 0;
3532
3533         return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3534 }
3535
3536
3537 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3538                         size_t buf_len)
3539 {
3540         struct wpa_supplicant *wpa_s = ctx;
3541
3542         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3543                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3544                         break;
3545         }
3546         if (wpa_s == NULL)
3547                 return -1;
3548
3549         return wpa_drv_get_noa(wpa_s, buf, buf_len);
3550 }
3551
3552
3553 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3554 {
3555         struct wpa_supplicant *wpa_s = ctx;
3556
3557         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3558                 struct wpa_ssid *ssid = wpa_s->current_ssid;
3559                 if (ssid == NULL)
3560                         continue;
3561                 if (ssid->mode != WPAS_MODE_INFRA)
3562                         continue;
3563                 if (wpa_s->wpa_state != WPA_COMPLETED &&
3564                     wpa_s->wpa_state != WPA_GROUP_HANDSHAKE)
3565                         continue;
3566                 if (os_memcmp(wpa_s->go_dev_addr, dev_addr, ETH_ALEN) == 0)
3567                         return 1;
3568         }
3569
3570         return 0;
3571 }
3572
3573
3574 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3575 {
3576         struct wpa_supplicant *wpa_s = ctx;
3577         wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3578 }
3579
3580
3581 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s)
3582 {
3583         struct wpa_interface iface;
3584         struct wpa_supplicant *p2pdev_wpa_s;
3585         char ifname[100];
3586         char force_name[100];
3587         int ret;
3588
3589         os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3590                     wpa_s->ifname);
3591         force_name[0] = '\0';
3592         wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3593         ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3594                              force_name, wpa_s->pending_interface_addr, NULL);
3595         if (ret < 0) {
3596                 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3597                 return ret;
3598         }
3599         os_strlcpy(wpa_s->pending_interface_name, ifname,
3600                    sizeof(wpa_s->pending_interface_name));
3601
3602         os_memset(&iface, 0, sizeof(iface));
3603         iface.p2p_mgmt = 1;
3604         iface.ifname = wpa_s->pending_interface_name;
3605         iface.driver = wpa_s->driver->name;
3606         iface.driver_param = wpa_s->conf->driver_param;
3607         iface.confname = wpa_s->confname;
3608         p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
3609         if (!p2pdev_wpa_s) {
3610                 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3611                 return -1;
3612         }
3613         p2pdev_wpa_s->parent = wpa_s;
3614
3615         wpa_s->pending_interface_name[0] = '\0';
3616         return 0;
3617 }
3618
3619
3620 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3621                                const u8 *noa, size_t noa_len)
3622 {
3623         struct wpa_supplicant *wpa_s, *intf = ctx;
3624         char hex[100];
3625
3626         for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3627                 if (wpa_s->waiting_presence_resp)
3628                         break;
3629         }
3630         if (!wpa_s) {
3631                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3632                 return;
3633         }
3634         wpa_s->waiting_presence_resp = 0;
3635
3636         wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3637         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3638                 " status=%u noa=%s", MAC2STR(src), status, hex);
3639 }
3640
3641
3642 /**
3643  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
3644  * @global: Pointer to global data from wpa_supplicant_init()
3645  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3646  * Returns: 0 on success, -1 on failure
3647  */
3648 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
3649 {
3650         struct p2p_config p2p;
3651         unsigned int r;
3652         int i;
3653
3654         if (wpa_s->conf->p2p_disabled)
3655                 return 0;
3656
3657         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
3658                 return 0;
3659
3660         if (global->p2p)
3661                 return 0;
3662
3663         os_memset(&p2p, 0, sizeof(p2p));
3664         p2p.cb_ctx = wpa_s;
3665         p2p.debug_print = wpas_p2p_debug_print;
3666         p2p.p2p_scan = wpas_p2p_scan;
3667         p2p.send_action = wpas_send_action;
3668         p2p.send_action_done = wpas_send_action_done;
3669         p2p.go_neg_completed = wpas_go_neg_completed;
3670         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
3671         p2p.dev_found = wpas_dev_found;
3672         p2p.dev_lost = wpas_dev_lost;
3673         p2p.find_stopped = wpas_find_stopped;
3674         p2p.start_listen = wpas_start_listen;
3675         p2p.stop_listen = wpas_stop_listen;
3676         p2p.send_probe_resp = wpas_send_probe_resp;
3677         p2p.sd_request = wpas_sd_request;
3678         p2p.sd_response = wpas_sd_response;
3679         p2p.prov_disc_req = wpas_prov_disc_req;
3680         p2p.prov_disc_resp = wpas_prov_disc_resp;
3681         p2p.prov_disc_fail = wpas_prov_disc_fail;
3682         p2p.invitation_process = wpas_invitation_process;
3683         p2p.invitation_received = wpas_invitation_received;
3684         p2p.invitation_result = wpas_invitation_result;
3685         p2p.get_noa = wpas_get_noa;
3686         p2p.go_connected = wpas_go_connected;
3687         p2p.presence_resp = wpas_presence_resp;
3688
3689         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
3690         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
3691         p2p.dev_name = wpa_s->conf->device_name;
3692         p2p.manufacturer = wpa_s->conf->manufacturer;
3693         p2p.model_name = wpa_s->conf->model_name;
3694         p2p.model_number = wpa_s->conf->model_number;
3695         p2p.serial_number = wpa_s->conf->serial_number;
3696         if (wpa_s->wps) {
3697                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
3698                 p2p.config_methods = wpa_s->wps->config_methods;
3699         }
3700
3701         if (wpa_s->conf->p2p_listen_reg_class &&
3702             wpa_s->conf->p2p_listen_channel) {
3703                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
3704                 p2p.channel = wpa_s->conf->p2p_listen_channel;
3705         } else {
3706                 p2p.reg_class = 81;
3707                 /*
3708                  * Pick one of the social channels randomly as the listen
3709                  * channel.
3710                  */
3711                 os_get_random((u8 *) &r, sizeof(r));
3712                 p2p.channel = 1 + (r % 3) * 5;
3713         }
3714         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d", p2p.channel);
3715
3716         if (wpa_s->conf->p2p_oper_reg_class &&
3717             wpa_s->conf->p2p_oper_channel) {
3718                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
3719                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
3720                 p2p.cfg_op_channel = 1;
3721                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
3722                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
3723
3724         } else {
3725                 p2p.op_reg_class = 81;
3726                 /*
3727                  * Use random operation channel from (1, 6, 11) if no other
3728                  * preference is indicated.
3729                  */
3730                 os_get_random((u8 *) &r, sizeof(r));
3731                 p2p.op_channel = 1 + (r % 3) * 5;
3732                 p2p.cfg_op_channel = 0;
3733                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
3734                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
3735         }
3736
3737         if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
3738                 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
3739                 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
3740         }
3741
3742         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
3743                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
3744                 p2p.country[2] = 0x04;
3745         } else
3746                 os_memcpy(p2p.country, "XX\x04", 3);
3747
3748         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
3749                 wpa_printf(MSG_ERROR, "P2P: Failed to configure supported "
3750                            "channel list");
3751                 return -1;
3752         }
3753
3754         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
3755                   WPS_DEV_TYPE_LEN);
3756
3757         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
3758         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
3759                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
3760
3761         p2p.concurrent_operations = !!(wpa_s->drv_flags &
3762                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
3763
3764         p2p.max_peers = 100;
3765
3766         if (wpa_s->conf->p2p_ssid_postfix) {
3767                 p2p.ssid_postfix_len =
3768                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
3769                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
3770                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
3771                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
3772                           p2p.ssid_postfix_len);
3773         }
3774
3775         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
3776
3777         p2p.max_listen = wpa_s->max_remain_on_chan;
3778
3779         global->p2p = p2p_init(&p2p);
3780         if (global->p2p == NULL)
3781                 return -1;
3782         global->p2p_init_wpa_s = wpa_s;
3783
3784         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
3785                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
3786                         continue;
3787                 p2p_add_wps_vendor_extension(
3788                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
3789         }
3790
3791         p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
3792
3793         return 0;
3794 }
3795
3796
3797 /**
3798  * wpas_p2p_deinit - Deinitialize per-interface P2P data
3799  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3800  *
3801  * This function deinitialize per-interface P2P data.
3802  */
3803 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
3804 {
3805         if (wpa_s->driver && wpa_s->drv_priv)
3806                 wpa_drv_probe_req_report(wpa_s, 0);
3807
3808         if (wpa_s->go_params) {
3809                 /* Clear any stored provisioning info */
3810                 p2p_clear_provisioning_info(
3811                         wpa_s->global->p2p,
3812                         wpa_s->go_params->peer_device_addr);
3813         }
3814
3815         os_free(wpa_s->go_params);
3816         wpa_s->go_params = NULL;
3817         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
3818         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3819         wpa_s->p2p_long_listen = 0;
3820         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
3821         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
3822         wpas_p2p_remove_pending_group_interface(wpa_s);
3823         eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
3824         wpas_p2p_listen_work_done(wpa_s);
3825         if (wpa_s->p2p_send_action_work) {
3826                 os_free(wpa_s->p2p_send_action_work->ctx);
3827                 radio_work_done(wpa_s->p2p_send_action_work);
3828                 wpa_s->p2p_send_action_work = NULL;
3829         }
3830         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
3831
3832         /* TODO: remove group interface from the driver if this wpa_s instance
3833          * is on top of a P2P group interface */
3834 }
3835
3836
3837 /**
3838  * wpas_p2p_deinit_global - Deinitialize global P2P module
3839  * @global: Pointer to global data from wpa_supplicant_init()
3840  *
3841  * This function deinitializes the global (per device) P2P module.
3842  */
3843 void wpas_p2p_deinit_global(struct wpa_global *global)
3844 {
3845         struct wpa_supplicant *wpa_s, *tmp;
3846
3847         wpa_s = global->ifaces;
3848         if (wpa_s)
3849                 wpas_p2p_service_flush(wpa_s);
3850
3851         if (global->p2p == NULL)
3852                 return;
3853
3854         /* Remove remaining P2P group interfaces */
3855         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
3856                 wpa_s = wpa_s->next;
3857         while (wpa_s) {
3858                 tmp = global->ifaces;
3859                 while (tmp &&
3860                        (tmp == wpa_s ||
3861                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
3862                         tmp = tmp->next;
3863                 }
3864                 if (tmp == NULL)
3865                         break;
3866                 /* Disconnect from the P2P group and deinit the interface */
3867                 wpas_p2p_disconnect(tmp);
3868         }
3869
3870         /*
3871          * Deinit GO data on any possibly remaining interface (if main
3872          * interface is used as GO).
3873          */
3874         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3875                 if (wpa_s->ap_iface)
3876                         wpas_p2p_group_deinit(wpa_s);
3877         }
3878
3879         p2p_deinit(global->p2p);
3880         global->p2p = NULL;
3881         global->p2p_init_wpa_s = NULL;
3882 }
3883
3884
3885 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
3886 {
3887         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
3888             wpa_s->conf->p2p_no_group_iface)
3889                 return 0; /* separate interface disabled per configuration */
3890         if (wpa_s->drv_flags &
3891             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
3892              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
3893                 return 1; /* P2P group requires a new interface in every case
3894                            */
3895         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
3896                 return 0; /* driver does not support concurrent operations */
3897         if (wpa_s->global->ifaces->next)
3898                 return 1; /* more that one interface already in use */
3899         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
3900                 return 1; /* this interface is already in use */
3901         return 0;
3902 }
3903
3904
3905 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
3906                                  const u8 *peer_addr,
3907                                  enum p2p_wps_method wps_method,
3908                                  int go_intent, const u8 *own_interface_addr,
3909                                  unsigned int force_freq, int persistent_group,
3910                                  struct wpa_ssid *ssid, unsigned int pref_freq)
3911 {
3912         if (persistent_group && wpa_s->conf->persistent_reconnect)
3913                 persistent_group = 2;
3914
3915         /*
3916          * Increase GO config timeout if HT40 is used since it takes some time
3917          * to scan channels for coex purposes before the BSS can be started.
3918          */
3919         p2p_set_config_timeout(wpa_s->global->p2p,
3920                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
3921
3922         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
3923                            go_intent, own_interface_addr, force_freq,
3924                            persistent_group, ssid ? ssid->ssid : NULL,
3925                            ssid ? ssid->ssid_len : 0,
3926                            wpa_s->p2p_pd_before_go_neg, pref_freq);
3927 }
3928
3929
3930 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
3931                                 const u8 *peer_addr,
3932                                 enum p2p_wps_method wps_method,
3933                                 int go_intent, const u8 *own_interface_addr,
3934                                 unsigned int force_freq, int persistent_group,
3935                                 struct wpa_ssid *ssid, unsigned int pref_freq)
3936 {
3937         if (persistent_group && wpa_s->conf->persistent_reconnect)
3938                 persistent_group = 2;
3939
3940         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
3941                              go_intent, own_interface_addr, force_freq,
3942                              persistent_group, ssid ? ssid->ssid : NULL,
3943                              ssid ? ssid->ssid_len : 0, pref_freq);
3944 }
3945
3946
3947 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
3948 {
3949         wpa_s->p2p_join_scan_count++;
3950         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
3951                    wpa_s->p2p_join_scan_count);
3952         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
3953                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
3954                            " for join operationg - stop join attempt",
3955                            MAC2STR(wpa_s->pending_join_iface_addr));
3956                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3957                 if (wpa_s->p2p_auto_pd) {
3958                         wpa_s->p2p_auto_pd = 0;
3959                         wpa_msg_global(wpa_s, MSG_INFO,
3960                                        P2P_EVENT_PROV_DISC_FAILURE
3961                                        " p2p_dev_addr=" MACSTR " status=N/A",
3962                                        MAC2STR(wpa_s->pending_join_dev_addr));
3963                         return;
3964                 }
3965                 wpa_msg_global(wpa_s->parent, MSG_INFO,
3966                                P2P_EVENT_GROUP_FORMATION_FAILURE);
3967         }
3968 }
3969
3970
3971 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
3972 {
3973         int *freqs, res, num, i;
3974
3975         if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
3976                 /* Multiple channels are supported and not all are in use */
3977                 return 0;
3978         }
3979
3980         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
3981         if (!freqs)
3982                 return 1;
3983
3984         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
3985                                         wpa_s->num_multichan_concurrent);
3986         if (num < 0) {
3987                 res = 1;
3988                 goto exit_free;
3989         }
3990
3991         for (i = 0; i < num; i++) {
3992                 if (freqs[i] == freq) {
3993                         wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
3994                                    freq);
3995                         res = 0;
3996                         goto exit_free;
3997                 }
3998         }
3999
4000         res = 1;
4001
4002 exit_free:
4003         os_free(freqs);
4004         return res;
4005 }
4006
4007
4008 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4009                             const u8 *peer_dev_addr)
4010 {
4011         struct wpa_bss *bss;
4012         int updated;
4013
4014         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4015         if (bss == NULL)
4016                 return -1;
4017         if (bss->last_update_idx < wpa_s->bss_update_idx) {
4018                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4019                            "last scan");
4020                 return 0;
4021         }
4022
4023         updated = os_reltime_before(&wpa_s->p2p_auto_started,
4024                                     &bss->last_update);
4025         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4026                    "%ld.%06ld (%supdated in last scan)",
4027                    bss->last_update.sec, bss->last_update.usec,
4028                    updated ? "": "not ");
4029
4030         return updated;
4031 }
4032
4033
4034 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4035                                    struct wpa_scan_results *scan_res)
4036 {
4037         struct wpa_bss *bss = NULL;
4038         int freq;
4039         u8 iface_addr[ETH_ALEN];
4040
4041         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4042
4043         if (wpa_s->global->p2p_disabled)
4044                 return;
4045
4046         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4047                    scan_res ? (int) scan_res->num : -1,
4048                    wpa_s->p2p_auto_join ? "auto_" : "");
4049
4050         if (scan_res)
4051                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4052
4053         if (wpa_s->p2p_auto_pd) {
4054                 int join = wpas_p2p_peer_go(wpa_s,
4055                                             wpa_s->pending_join_dev_addr);
4056                 if (join == 0 &&
4057                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4058                         wpa_s->auto_pd_scan_retry++;
4059                         bss = wpa_bss_get_bssid_latest(
4060                                 wpa_s, wpa_s->pending_join_dev_addr);
4061                         if (bss) {
4062                                 freq = bss->freq;
4063                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4064                                            "the peer " MACSTR " at %d MHz",
4065                                            wpa_s->auto_pd_scan_retry,
4066                                            MAC2STR(wpa_s->
4067                                                    pending_join_dev_addr),
4068                                            freq);
4069                                 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4070                                 return;
4071                         }
4072                 }
4073
4074                 if (join < 0)
4075                         join = 0;
4076
4077                 wpa_s->p2p_auto_pd = 0;
4078                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4079                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4080                            MAC2STR(wpa_s->pending_join_dev_addr), join);
4081                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4082                                       wpa_s->pending_join_dev_addr,
4083                                       wpa_s->pending_pd_config_methods, join,
4084                                       0, wpa_s->user_initiated_pd) < 0) {
4085                         wpa_s->p2p_auto_pd = 0;
4086                         wpa_msg_global(wpa_s, MSG_INFO,
4087                                        P2P_EVENT_PROV_DISC_FAILURE
4088                                        " p2p_dev_addr=" MACSTR " status=N/A",
4089                                        MAC2STR(wpa_s->pending_join_dev_addr));
4090                 }
4091                 return;
4092         }
4093
4094         if (wpa_s->p2p_auto_join) {
4095                 int join = wpas_p2p_peer_go(wpa_s,
4096                                             wpa_s->pending_join_dev_addr);
4097                 if (join < 0) {
4098                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4099                                    "running a GO -> use GO Negotiation");
4100                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4101                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4102                                          wpa_s->p2p_persistent_group, 0, 0, 0,
4103                                          wpa_s->p2p_go_intent,
4104                                          wpa_s->p2p_connect_freq,
4105                                          wpa_s->p2p_persistent_id,
4106                                          wpa_s->p2p_pd_before_go_neg,
4107                                          wpa_s->p2p_go_ht40,
4108                                          wpa_s->p2p_go_vht);
4109                         return;
4110                 }
4111
4112                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4113                            "try to join the group", join ? "" :
4114                            " in older scan");
4115                 if (!join)
4116                         wpa_s->p2p_fallback_to_go_neg = 1;
4117         }
4118
4119         freq = p2p_get_oper_freq(wpa_s->global->p2p,
4120                                  wpa_s->pending_join_iface_addr);
4121         if (freq < 0 &&
4122             p2p_get_interface_addr(wpa_s->global->p2p,
4123                                    wpa_s->pending_join_dev_addr,
4124                                    iface_addr) == 0 &&
4125             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0)
4126         {
4127                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4128                            "address for join from " MACSTR " to " MACSTR
4129                            " based on newly discovered P2P peer entry",
4130                            MAC2STR(wpa_s->pending_join_iface_addr),
4131                            MAC2STR(iface_addr));
4132                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4133                           ETH_ALEN);
4134
4135                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4136                                          wpa_s->pending_join_iface_addr);
4137         }
4138         if (freq >= 0) {
4139                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4140                            "from P2P peer table: %d MHz", freq);
4141         }
4142         if (wpa_s->p2p_join_ssid_len) {
4143                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4144                            MACSTR " and SSID %s",
4145                            MAC2STR(wpa_s->pending_join_iface_addr),
4146                            wpa_ssid_txt(wpa_s->p2p_join_ssid,
4147                                         wpa_s->p2p_join_ssid_len));
4148                 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4149                                   wpa_s->p2p_join_ssid,
4150                                   wpa_s->p2p_join_ssid_len);
4151         }
4152         if (!bss) {
4153                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4154                            MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4155                 bss = wpa_bss_get_bssid_latest(wpa_s,
4156                                                wpa_s->pending_join_iface_addr);
4157         }
4158         if (bss) {
4159                 freq = bss->freq;
4160                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4161                            "from BSS table: %d MHz (SSID %s)", freq,
4162                            wpa_ssid_txt(bss->ssid, bss->ssid_len));
4163         }
4164         if (freq > 0) {
4165                 u16 method;
4166
4167                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4168                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4169                                        P2P_EVENT_GROUP_FORMATION_FAILURE
4170                                        "reason=FREQ_CONFLICT");
4171                         return;
4172                 }
4173
4174                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4175                            "prior to joining an existing group (GO " MACSTR
4176                            " freq=%u MHz)",
4177                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
4178                 wpa_s->pending_pd_before_join = 1;
4179
4180                 switch (wpa_s->pending_join_wps_method) {
4181                 case WPS_PIN_DISPLAY:
4182                         method = WPS_CONFIG_KEYPAD;
4183                         break;
4184                 case WPS_PIN_KEYPAD:
4185                         method = WPS_CONFIG_DISPLAY;
4186                         break;
4187                 case WPS_PBC:
4188                         method = WPS_CONFIG_PUSHBUTTON;
4189                         break;
4190                 default:
4191                         method = 0;
4192                         break;
4193                 }
4194
4195                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4196                                                wpa_s->pending_join_dev_addr) ==
4197                      method)) {
4198                         /*
4199                          * We have already performed provision discovery for
4200                          * joining the group. Proceed directly to join
4201                          * operation without duplicated provision discovery. */
4202                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4203                                    "with " MACSTR " already done - proceed to "
4204                                    "join",
4205                                    MAC2STR(wpa_s->pending_join_dev_addr));
4206                         wpa_s->pending_pd_before_join = 0;
4207                         goto start;
4208                 }
4209
4210                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4211                                       wpa_s->pending_join_dev_addr, method, 1,
4212                                       freq, wpa_s->user_initiated_pd) < 0) {
4213                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4214                                    "Discovery Request before joining an "
4215                                    "existing group");
4216                         wpa_s->pending_pd_before_join = 0;
4217                         goto start;
4218                 }
4219                 return;
4220         }
4221
4222         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4223         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4224         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4225         wpas_p2p_check_join_scan_limit(wpa_s);
4226         return;
4227
4228 start:
4229         /* Start join operation immediately */
4230         wpas_p2p_join_start(wpa_s);
4231 }
4232
4233
4234 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4235                                    const u8 *ssid, size_t ssid_len)
4236 {
4237         int ret;
4238         struct wpa_driver_scan_params params;
4239         struct wpabuf *wps_ie, *ies;
4240         size_t ielen;
4241         int freqs[2] = { 0, 0 };
4242
4243         os_memset(&params, 0, sizeof(params));
4244
4245         /* P2P Wildcard SSID */
4246         params.num_ssids = 1;
4247         if (ssid && ssid_len) {
4248                 params.ssids[0].ssid = ssid;
4249                 params.ssids[0].ssid_len = ssid_len;
4250                 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4251                 wpa_s->p2p_join_ssid_len = ssid_len;
4252         } else {
4253                 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4254                 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4255                 wpa_s->p2p_join_ssid_len = 0;
4256         }
4257
4258         wpa_s->wps->dev.p2p = 1;
4259         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4260                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4261                                         NULL);
4262         if (wps_ie == NULL) {
4263                 wpas_p2p_scan_res_join(wpa_s, NULL);
4264                 return;
4265         }
4266
4267         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4268         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4269         if (ies == NULL) {
4270                 wpabuf_free(wps_ie);
4271                 wpas_p2p_scan_res_join(wpa_s, NULL);
4272                 return;
4273         }
4274         wpabuf_put_buf(ies, wps_ie);
4275         wpabuf_free(wps_ie);
4276
4277         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4278
4279         params.p2p_probe = 1;
4280         params.extra_ies = wpabuf_head(ies);
4281         params.extra_ies_len = wpabuf_len(ies);
4282
4283         if (!freq) {
4284                 int oper_freq;
4285                 /*
4286                  * If freq is not provided, check the operating freq of the GO
4287                  * and use a single channel scan on if possible.
4288                  */
4289                 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4290                                               wpa_s->pending_join_iface_addr);
4291                 if (oper_freq > 0)
4292                         freq = oper_freq;
4293         }
4294         if (freq > 0) {
4295                 freqs[0] = freq;
4296                 params.freqs = freqs;
4297         }
4298
4299         /*
4300          * Run a scan to update BSS table and start Provision Discovery once
4301          * the new scan results become available.
4302          */
4303         ret = wpa_drv_scan(wpa_s, &params);
4304         if (!ret) {
4305                 os_get_reltime(&wpa_s->scan_trigger_time);
4306                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
4307                 wpa_s->own_scan_requested = 1;
4308         }
4309
4310         wpabuf_free(ies);
4311
4312         if (ret) {
4313                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
4314                            "try again later");
4315                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4316                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4317                 wpas_p2p_check_join_scan_limit(wpa_s);
4318         }
4319 }
4320
4321
4322 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
4323 {
4324         struct wpa_supplicant *wpa_s = eloop_ctx;
4325         wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
4326 }
4327
4328
4329 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
4330                          const u8 *dev_addr, enum p2p_wps_method wps_method,
4331                          int auto_join, const u8 *ssid, size_t ssid_len)
4332 {
4333         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
4334                    MACSTR " dev " MACSTR ")%s",
4335                    MAC2STR(iface_addr), MAC2STR(dev_addr),
4336                    auto_join ? " (auto_join)" : "");
4337         if (ssid && ssid_len) {
4338                 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
4339                            wpa_ssid_txt(ssid, ssid_len));
4340         }
4341
4342         wpa_s->p2p_auto_pd = 0;
4343         wpa_s->p2p_auto_join = !!auto_join;
4344         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
4345         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
4346         wpa_s->pending_join_wps_method = wps_method;
4347
4348         /* Make sure we are not running find during connection establishment */
4349         wpas_p2p_stop_find(wpa_s);
4350
4351         wpa_s->p2p_join_scan_count = 0;
4352         wpas_p2p_join_scan_req(wpa_s, 0, ssid, ssid_len);
4353         return 0;
4354 }
4355
4356
4357 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s)
4358 {
4359         struct wpa_supplicant *group;
4360         struct p2p_go_neg_results res;
4361         struct wpa_bss *bss;
4362
4363         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
4364         if (group == NULL)
4365                 return -1;
4366         if (group != wpa_s) {
4367                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
4368                           sizeof(group->p2p_pin));
4369                 group->p2p_wps_method = wpa_s->p2p_wps_method;
4370         } else {
4371                 /*
4372                  * Need to mark the current interface for p2p_group_formation
4373                  * when a separate group interface is not used. This is needed
4374                  * to allow p2p_cancel stop a pending p2p_connect-join.
4375                  * wpas_p2p_init_group_interface() addresses this for the case
4376                  * where a separate group interface is used.
4377                  */
4378                 wpa_s->global->p2p_group_formation = wpa_s;
4379         }
4380
4381         group->p2p_in_provisioning = 1;
4382         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
4383
4384         os_memset(&res, 0, sizeof(res));
4385         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
4386                   ETH_ALEN);
4387         res.wps_method = wpa_s->pending_join_wps_method;
4388         bss = wpa_bss_get_bssid_latest(wpa_s, wpa_s->pending_join_iface_addr);
4389         if (bss) {
4390                 res.freq = bss->freq;
4391                 res.ssid_len = bss->ssid_len;
4392                 os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
4393                 wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency "
4394                            "from BSS table: %d MHz (SSID %s)", bss->freq,
4395                            wpa_ssid_txt(bss->ssid, bss->ssid_len));
4396         }
4397
4398         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
4399                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
4400                            "starting client");
4401                 wpa_drv_cancel_remain_on_channel(wpa_s);
4402                 wpa_s->off_channel_freq = 0;
4403                 wpa_s->roc_waiting_drv_freq = 0;
4404         }
4405         wpas_start_wps_enrollee(group, &res);
4406
4407         /*
4408          * Allow a longer timeout for join-a-running-group than normal 15
4409          * second group formation timeout since the GO may not have authorized
4410          * our connection yet.
4411          */
4412         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4413         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
4414                                wpa_s, NULL);
4415
4416         return 0;
4417 }
4418
4419
4420 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
4421                                 int *force_freq, int *pref_freq, int go)
4422 {
4423         int *freqs, res;
4424         unsigned int freq_in_use = 0, num, i;
4425
4426         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
4427         if (!freqs)
4428                 return -1;
4429
4430         num = get_shared_radio_freqs(wpa_s, freqs,
4431                                      wpa_s->num_multichan_concurrent);
4432         wpa_printf(MSG_DEBUG,
4433                    "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u",
4434                    freq, wpa_s->num_multichan_concurrent, num);
4435
4436         if (freq > 0) {
4437                 int ret;
4438                 if (go)
4439                         ret = p2p_supported_freq(wpa_s->global->p2p, freq);
4440                 else
4441                         ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
4442                 if (!ret) {
4443                         wpa_printf(MSG_DEBUG, "P2P: The forced channel "
4444                                    "(%u MHz) is not supported for P2P uses",
4445                                    freq);
4446                         res = -3;
4447                         goto exit_free;
4448                 }
4449
4450                 for (i = 0; i < num; i++) {
4451                         if (freqs[i] == freq)
4452                                 freq_in_use = 1;
4453                 }
4454
4455                 if (num == wpa_s->num_multichan_concurrent && !freq_in_use) {
4456                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
4457                                    freq);
4458                         res = -2;
4459                         goto exit_free;
4460                 }
4461                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
4462                            "requested channel (%u MHz)", freq);
4463                 *force_freq = freq;
4464                 goto exit_ok;
4465         }
4466
4467         for (i = 0; i < num; i++) {
4468                 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i]))
4469                         continue;
4470
4471                 if (*pref_freq == 0 && num < wpa_s->num_multichan_concurrent) {
4472                         wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
4473                                    freqs[i]);
4474                         *pref_freq = freqs[i];
4475                 } else {
4476                         wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
4477                                    freqs[i]);
4478                         *force_freq = freqs[i];
4479                 }
4480                 break;
4481         }
4482
4483         if (i == num) {
4484                 if (num < wpa_s->num_multichan_concurrent && num > 0) {
4485                         wpa_printf(MSG_DEBUG, "P2P: Current operating channels are not available for P2P. Try to use another channel");
4486                         *force_freq = 0;
4487                 } else if (num < wpa_s->num_multichan_concurrent) {
4488                         wpa_printf(MSG_DEBUG, "P2P: No current operating channels - try to use a new channel");
4489                         *force_freq = 0;
4490                 } else {
4491                         wpa_printf(MSG_DEBUG, "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
4492                         res = -2;
4493                         goto exit_free;
4494                 }
4495         }
4496
4497 exit_ok:
4498         res = 0;
4499 exit_free:
4500         os_free(freqs);
4501         return res;
4502 }
4503
4504
4505 /**
4506  * wpas_p2p_connect - Request P2P Group Formation to be started
4507  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4508  * @peer_addr: Address of the peer P2P Device
4509  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
4510  * @persistent_group: Whether to create a persistent group
4511  * @auto_join: Whether to select join vs. GO Negotiation automatically
4512  * @join: Whether to join an existing group (as a client) instead of starting
4513  *      Group Owner negotiation; @peer_addr is BSSID in that case
4514  * @auth: Whether to only authorize the connection instead of doing that and
4515  *      initiating Group Owner negotiation
4516  * @go_intent: GO Intent or -1 to use default
4517  * @freq: Frequency for the group or 0 for auto-selection
4518  * @persistent_id: Persistent group credentials to use for forcing GO
4519  *      parameters or -1 to generate new values (SSID/passphrase)
4520  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
4521  *      interoperability workaround when initiating group formation
4522  * @ht40: Start GO with 40 MHz channel width
4523  * @vht:  Start GO with VHT support
4524  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
4525  *      failure, -2 on failure due to channel not currently available,
4526  *      -3 if forced channel is not supported
4527  */
4528 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4529                      const char *pin, enum p2p_wps_method wps_method,
4530                      int persistent_group, int auto_join, int join, int auth,
4531                      int go_intent, int freq, int persistent_id, int pd,
4532                      int ht40, int vht)
4533 {
4534         int force_freq = 0, pref_freq = 0;
4535         int ret = 0, res;
4536         enum wpa_driver_if_type iftype;
4537         const u8 *if_addr;
4538         struct wpa_ssid *ssid = NULL;
4539
4540         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4541                 return -1;
4542
4543         if (persistent_id >= 0) {
4544                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
4545                 if (ssid == NULL || ssid->disabled != 2 ||
4546                     ssid->mode != WPAS_MODE_P2P_GO)
4547                         return -1;
4548         }
4549
4550         os_free(wpa_s->global->add_psk);
4551         wpa_s->global->add_psk = NULL;
4552
4553         wpa_s->global->p2p_fail_on_wps_complete = 0;
4554
4555         if (go_intent < 0)
4556                 go_intent = wpa_s->conf->p2p_go_intent;
4557
4558         if (!auth)
4559                 wpa_s->p2p_long_listen = 0;
4560
4561         wpa_s->p2p_wps_method = wps_method;
4562         wpa_s->p2p_persistent_group = !!persistent_group;
4563         wpa_s->p2p_persistent_id = persistent_id;
4564         wpa_s->p2p_go_intent = go_intent;
4565         wpa_s->p2p_connect_freq = freq;
4566         wpa_s->p2p_fallback_to_go_neg = 0;
4567         wpa_s->p2p_pd_before_go_neg = !!pd;
4568         wpa_s->p2p_go_ht40 = !!ht40;
4569         wpa_s->p2p_go_vht = !!vht;
4570
4571         if (pin)
4572                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
4573         else if (wps_method == WPS_PIN_DISPLAY) {
4574                 ret = wps_generate_pin();
4575                 os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), "%08d",
4576                             ret);
4577                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
4578                            wpa_s->p2p_pin);
4579         } else
4580                 wpa_s->p2p_pin[0] = '\0';
4581
4582         if (join || auto_join) {
4583                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
4584                 if (auth) {
4585                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
4586                                    "connect a running group from " MACSTR,
4587                                    MAC2STR(peer_addr));
4588                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
4589                         return ret;
4590                 }
4591                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
4592                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
4593                                            iface_addr) < 0) {
4594                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
4595                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
4596                                          dev_addr);
4597                 }
4598                 if (auto_join) {
4599                         os_get_reltime(&wpa_s->p2p_auto_started);
4600                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
4601                                    "%ld.%06ld",
4602                                    wpa_s->p2p_auto_started.sec,
4603                                    wpa_s->p2p_auto_started.usec);
4604                 }
4605                 wpa_s->user_initiated_pd = 1;
4606                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
4607                                   auto_join, NULL, 0) < 0)
4608                         return -1;
4609                 return ret;
4610         }
4611
4612         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
4613                                    go_intent == 15);
4614         if (res)
4615                 return res;
4616         wpas_p2p_set_own_freq_preference(wpa_s,
4617                                          force_freq ? force_freq : pref_freq);
4618
4619         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
4620
4621         if (wpa_s->create_p2p_iface) {
4622                 /* Prepare to add a new interface for the group */
4623                 iftype = WPA_IF_P2P_GROUP;
4624                 if (go_intent == 15)
4625                         iftype = WPA_IF_P2P_GO;
4626                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
4627                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
4628                                    "interface for the group");
4629                         return -1;
4630                 }
4631
4632                 if_addr = wpa_s->pending_interface_addr;
4633         } else
4634                 if_addr = wpa_s->own_addr;
4635
4636         if (auth) {
4637                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
4638                                          go_intent, if_addr,
4639                                          force_freq, persistent_group, ssid,
4640                                          pref_freq) < 0)
4641                         return -1;
4642                 return ret;
4643         }
4644
4645         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
4646                                   go_intent, if_addr, force_freq,
4647                                   persistent_group, ssid, pref_freq) < 0) {
4648                 if (wpa_s->create_p2p_iface)
4649                         wpas_p2p_remove_pending_group_interface(wpa_s);
4650                 return -1;
4651         }
4652         return ret;
4653 }
4654
4655
4656 /**
4657  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
4658  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4659  * @freq: Frequency of the channel in MHz
4660  * @duration: Duration of the stay on the channel in milliseconds
4661  *
4662  * This callback is called when the driver indicates that it has started the
4663  * requested remain-on-channel duration.
4664  */
4665 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
4666                                    unsigned int freq, unsigned int duration)
4667 {
4668         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4669                 return;
4670         if (wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
4671                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
4672                               wpa_s->pending_listen_duration);
4673                 wpa_s->pending_listen_freq = 0;
4674         }
4675 }
4676
4677
4678 static int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s,
4679                                  unsigned int timeout)
4680 {
4681         /* Limit maximum Listen state time based on driver limitation. */
4682         if (timeout > wpa_s->max_remain_on_chan)
4683                 timeout = wpa_s->max_remain_on_chan;
4684
4685         return p2p_listen(wpa_s->global->p2p, timeout);
4686 }
4687
4688
4689 /**
4690  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
4691  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4692  * @freq: Frequency of the channel in MHz
4693  *
4694  * This callback is called when the driver indicates that a remain-on-channel
4695  * operation has been completed, i.e., the duration on the requested channel
4696  * has timed out.
4697  */
4698 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
4699                                           unsigned int freq)
4700 {
4701         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
4702                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
4703                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
4704         wpas_p2p_listen_work_done(wpa_s);
4705         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4706                 return;
4707         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
4708                 return; /* P2P module started a new operation */
4709         if (offchannel_pending_action_tx(wpa_s))
4710                 return;
4711         if (wpa_s->p2p_long_listen > 0)
4712                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
4713         if (wpa_s->p2p_long_listen > 0) {
4714                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
4715                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
4716         } else {
4717                 /*
4718                  * When listen duration is over, stop listen & update p2p_state
4719                  * to IDLE.
4720                  */
4721                 p2p_stop_listen(wpa_s->global->p2p);
4722         }
4723 }
4724
4725
4726 /**
4727  * wpas_p2p_group_remove - Remove a P2P group
4728  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4729  * @ifname: Network interface name of the group interface or "*" to remove all
4730  *      groups
4731  * Returns: 0 on success, -1 on failure
4732  *
4733  * This function is used to remove a P2P group. This can be used to disconnect
4734  * from a group in which the local end is a P2P Client or to end a P2P Group in
4735  * case the local end is the Group Owner. If a virtual network interface was
4736  * created for this group, that interface will be removed. Otherwise, only the
4737  * configured P2P group network will be removed from the interface.
4738  */
4739 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
4740 {
4741         struct wpa_global *global = wpa_s->global;
4742
4743         if (os_strcmp(ifname, "*") == 0) {
4744                 struct wpa_supplicant *prev;
4745                 wpa_s = global->ifaces;
4746                 while (wpa_s) {
4747                         prev = wpa_s;
4748                         wpa_s = wpa_s->next;
4749                         if (prev->p2p_group_interface !=
4750                             NOT_P2P_GROUP_INTERFACE ||
4751                             (prev->current_ssid &&
4752                              prev->current_ssid->p2p_group))
4753                                 wpas_p2p_disconnect(prev);
4754                 }
4755                 return 0;
4756         }
4757
4758         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4759                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
4760                         break;
4761         }
4762
4763         return wpas_p2p_disconnect(wpa_s);
4764 }
4765
4766
4767 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
4768 {
4769         unsigned int r;
4770
4771         if (freq == 2) {
4772                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
4773                            "band");
4774                 if (wpa_s->best_24_freq > 0 &&
4775                     p2p_supported_freq_go(wpa_s->global->p2p,
4776                                           wpa_s->best_24_freq)) {
4777                         freq = wpa_s->best_24_freq;
4778                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
4779                                    "channel: %d MHz", freq);
4780                 } else {
4781                         os_get_random((u8 *) &r, sizeof(r));
4782                         freq = 2412 + (r % 3) * 25;
4783                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
4784                                    "channel: %d MHz", freq);
4785                 }
4786         }
4787
4788         if (freq == 5) {
4789                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
4790                            "band");
4791                 if (wpa_s->best_5_freq > 0 &&
4792                     p2p_supported_freq_go(wpa_s->global->p2p,
4793                                        wpa_s->best_5_freq)) {
4794                         freq = wpa_s->best_5_freq;
4795                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
4796                                    "channel: %d MHz", freq);
4797                 } else {
4798                         os_get_random((u8 *) &r, sizeof(r));
4799                         freq = 5180 + (r % 4) * 20;
4800                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
4801                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
4802                                            "5 GHz channel for P2P group");
4803                                 return -1;
4804                         }
4805                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
4806                                    "channel: %d MHz", freq);
4807                 }
4808         }
4809
4810         if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
4811                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
4812                            "(%u MHz) is not supported for P2P uses",
4813                            freq);
4814                 return -1;
4815         }
4816
4817         return freq;
4818 }
4819
4820
4821 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
4822                                    struct p2p_go_neg_results *params,
4823                                    int freq, int ht40, int vht,
4824                                    const struct p2p_channels *channels)
4825 {
4826         int res, *freqs;
4827         unsigned int pref_freq;
4828         unsigned int num, i;
4829
4830         os_memset(params, 0, sizeof(*params));
4831         params->role_go = 1;
4832         params->ht40 = ht40;
4833         params->vht = vht;
4834         if (freq) {
4835                 if (!freq_included(channels, freq)) {
4836                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
4837                                    "accepted", freq);
4838                         return -1;
4839                 }
4840                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced "
4841                            "frequency %d MHz", freq);
4842                 params->freq = freq;
4843         } else if (wpa_s->conf->p2p_oper_reg_class == 81 &&
4844                    wpa_s->conf->p2p_oper_channel >= 1 &&
4845                    wpa_s->conf->p2p_oper_channel <= 11 &&
4846                    freq_included(channels,
4847                                  2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
4848                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
4849                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
4850                            "frequency %d MHz", params->freq);
4851         } else if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
4852                     wpa_s->conf->p2p_oper_reg_class == 116 ||
4853                     wpa_s->conf->p2p_oper_reg_class == 117 ||
4854                     wpa_s->conf->p2p_oper_reg_class == 124 ||
4855                     wpa_s->conf->p2p_oper_reg_class == 126 ||
4856                     wpa_s->conf->p2p_oper_reg_class == 127) &&
4857                    freq_included(channels,
4858                                  5000 + 5 * wpa_s->conf->p2p_oper_channel)) {
4859                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
4860                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
4861                            "frequency %d MHz", params->freq);
4862         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
4863                    wpa_s->best_overall_freq > 0 &&
4864                    p2p_supported_freq_go(wpa_s->global->p2p,
4865                                          wpa_s->best_overall_freq) &&
4866                    freq_included(channels, wpa_s->best_overall_freq)) {
4867                 params->freq = wpa_s->best_overall_freq;
4868                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
4869                            "channel %d MHz", params->freq);
4870         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
4871                    wpa_s->best_24_freq > 0 &&
4872                    p2p_supported_freq_go(wpa_s->global->p2p,
4873                                          wpa_s->best_24_freq) &&
4874                    freq_included(channels, wpa_s->best_24_freq)) {
4875                 params->freq = wpa_s->best_24_freq;
4876                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
4877                            "channel %d MHz", params->freq);
4878         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
4879                    wpa_s->best_5_freq > 0 &&
4880                    p2p_supported_freq_go(wpa_s->global->p2p,
4881                                          wpa_s->best_5_freq) &&
4882                    freq_included(channels, wpa_s->best_5_freq)) {
4883                 params->freq = wpa_s->best_5_freq;
4884                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
4885                            "channel %d MHz", params->freq);
4886         } else if ((pref_freq = p2p_get_pref_freq(wpa_s->global->p2p,
4887                                                   channels))) {
4888                 params->freq = pref_freq;
4889                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
4890                            "channels", params->freq);
4891         } else {
4892                 int chan;
4893                 for (chan = 0; chan < 11; chan++) {
4894                         params->freq = 2412 + chan * 5;
4895                         if (!wpas_p2p_disallowed_freq(wpa_s->global,
4896                                                       params->freq) &&
4897                             freq_included(channels, params->freq))
4898                                 break;
4899                 }
4900                 if (chan == 11) {
4901                         wpa_printf(MSG_DEBUG, "P2P: No 2.4 GHz channel "
4902                                    "allowed");
4903                         return -1;
4904                 }
4905                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference "
4906                            "known)", params->freq);
4907         }
4908
4909         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
4910         if (!freqs)
4911                 return -1;
4912
4913         res = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4914                                         wpa_s->num_multichan_concurrent);
4915         if (res < 0) {
4916                 os_free(freqs);
4917                 return -1;
4918         }
4919         num = res;
4920
4921         for (i = 0; i < num; i++) {
4922                 if (freq && freqs[i] == freq)
4923                         break;
4924                 if (!freq && freq_included(channels, freqs[i])) {
4925                         wpa_printf(MSG_DEBUG, "P2P: Force GO on a channel we are already using (%u MHz)",
4926                                    freqs[i]);
4927                         params->freq = freqs[i];
4928                         break;
4929                 }
4930         }
4931
4932         if (i == num) {
4933                 if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
4934                         if (freq)
4935                                 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on freq (%u MHz) as all the channels are in use", freq);
4936                         else
4937                                 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using");
4938                         os_free(freqs);
4939                         return -1;
4940                 } else if (num == 0) {
4941                         wpa_printf(MSG_DEBUG, "P2P: Use one of the free channels");
4942                 } else {
4943                         wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using. Use one of the free channels");
4944                 }
4945         }
4946
4947         os_free(freqs);
4948         return 0;
4949 }
4950
4951
4952 static struct wpa_supplicant *
4953 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
4954                          int go)
4955 {
4956         struct wpa_supplicant *group_wpa_s;
4957
4958         if (!wpas_p2p_create_iface(wpa_s)) {
4959                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
4960                         "operations");
4961                 wpa_s->p2p_first_connection_timeout = 0;
4962                 return wpa_s;
4963         }
4964
4965         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
4966                                          WPA_IF_P2P_CLIENT) < 0) {
4967                 wpa_msg_global(wpa_s, MSG_ERROR,
4968                                "P2P: Failed to add group interface");
4969                 return NULL;
4970         }
4971         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
4972         if (group_wpa_s == NULL) {
4973                 wpa_msg_global(wpa_s, MSG_ERROR,
4974                                "P2P: Failed to initialize group interface");
4975                 wpas_p2p_remove_pending_group_interface(wpa_s);
4976                 return NULL;
4977         }
4978
4979         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
4980                 group_wpa_s->ifname);
4981         group_wpa_s->p2p_first_connection_timeout = 0;
4982         return group_wpa_s;
4983 }
4984
4985
4986 /**
4987  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
4988  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4989  * @persistent_group: Whether to create a persistent group
4990  * @freq: Frequency for the group or 0 to indicate no hardcoding
4991  * @ht40: Start GO with 40 MHz channel width
4992  * @vht:  Start GO with VHT support
4993  * Returns: 0 on success, -1 on failure
4994  *
4995  * This function creates a new P2P group with the local end as the Group Owner,
4996  * i.e., without using Group Owner Negotiation.
4997  */
4998 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
4999                        int freq, int ht40, int vht)
5000 {
5001         struct p2p_go_neg_results params;
5002
5003         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5004                 return -1;
5005
5006         os_free(wpa_s->global->add_psk);
5007         wpa_s->global->add_psk = NULL;
5008
5009         /* Make sure we are not running find during connection establishment */
5010         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
5011         wpas_p2p_stop_find_oper(wpa_s);
5012
5013         freq = wpas_p2p_select_go_freq(wpa_s, freq);
5014         if (freq < 0)
5015                 return -1;
5016
5017         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, NULL))
5018                 return -1;
5019         if (params.freq &&
5020             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
5021                 wpa_printf(MSG_DEBUG, "P2P: The selected channel for GO "
5022                            "(%u MHz) is not supported for P2P uses",
5023                            params.freq);
5024                 return -1;
5025         }
5026         p2p_go_params(wpa_s->global->p2p, &params);
5027         params.persistent_group = persistent_group;
5028
5029         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
5030         if (wpa_s == NULL)
5031                 return -1;
5032         wpas_start_wps_go(wpa_s, &params, 0);
5033
5034         return 0;
5035 }
5036
5037
5038 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
5039                                  struct wpa_ssid *params, int addr_allocated)
5040 {
5041         struct wpa_ssid *ssid;
5042
5043         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
5044         if (wpa_s == NULL)
5045                 return -1;
5046         wpa_s->p2p_last_4way_hs_fail = NULL;
5047
5048         wpa_supplicant_ap_deinit(wpa_s);
5049
5050         ssid = wpa_config_add_network(wpa_s->conf);
5051         if (ssid == NULL)
5052                 return -1;
5053         wpa_config_set_network_defaults(ssid);
5054         ssid->temporary = 1;
5055         ssid->proto = WPA_PROTO_RSN;
5056         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
5057         ssid->group_cipher = WPA_CIPHER_CCMP;
5058         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
5059         ssid->ssid = os_malloc(params->ssid_len);
5060         if (ssid->ssid == NULL) {
5061                 wpa_config_remove_network(wpa_s->conf, ssid->id);
5062                 return -1;
5063         }
5064         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
5065         ssid->ssid_len = params->ssid_len;
5066         ssid->p2p_group = 1;
5067         ssid->export_keys = 1;
5068         if (params->psk_set) {
5069                 os_memcpy(ssid->psk, params->psk, 32);
5070                 ssid->psk_set = 1;
5071         }
5072         if (params->passphrase)
5073                 ssid->passphrase = os_strdup(params->passphrase);
5074
5075         wpa_s->show_group_started = 1;
5076
5077         wpa_supplicant_select_network(wpa_s, ssid);
5078
5079         return 0;
5080 }
5081
5082
5083 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
5084                                   struct wpa_ssid *ssid, int addr_allocated,
5085                                   int freq, int ht40, int vht,
5086                                   const struct p2p_channels *channels,
5087                                   int connection_timeout)
5088 {
5089         struct p2p_go_neg_results params;
5090         int go = 0;
5091
5092         if (ssid->disabled != 2 || ssid->ssid == NULL)
5093                 return -1;
5094
5095         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
5096             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
5097                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
5098                            "already running");
5099                 return 0;
5100         }
5101
5102         os_free(wpa_s->global->add_psk);
5103         wpa_s->global->add_psk = NULL;
5104
5105         /* Make sure we are not running find during connection establishment */
5106         wpas_p2p_stop_find_oper(wpa_s);
5107
5108         wpa_s->p2p_fallback_to_go_neg = 0;
5109
5110         if (ssid->mode == WPAS_MODE_INFRA)
5111                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated);
5112
5113         if (ssid->mode != WPAS_MODE_P2P_GO)
5114                 return -1;
5115
5116         freq = wpas_p2p_select_go_freq(wpa_s, freq);
5117         if (freq < 0)
5118                 return -1;
5119
5120         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, channels))
5121                 return -1;
5122
5123         params.role_go = 1;
5124         params.psk_set = ssid->psk_set;
5125         if (params.psk_set)
5126                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
5127         if (ssid->passphrase) {
5128                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
5129                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
5130                                    "persistent group");
5131                         return -1;
5132                 }
5133                 os_strlcpy(params.passphrase, ssid->passphrase,
5134                            sizeof(params.passphrase));
5135         }
5136         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
5137         params.ssid_len = ssid->ssid_len;
5138         params.persistent_group = 1;
5139
5140         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
5141         if (wpa_s == NULL)
5142                 return -1;
5143
5144         wpa_s->p2p_first_connection_timeout = connection_timeout;
5145         wpas_start_wps_go(wpa_s, &params, 0);
5146
5147         return 0;
5148 }
5149
5150
5151 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
5152                                struct wpabuf *proberesp_ies)
5153 {
5154         struct wpa_supplicant *wpa_s = ctx;
5155         if (wpa_s->ap_iface) {
5156                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
5157                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
5158                         wpabuf_free(beacon_ies);
5159                         wpabuf_free(proberesp_ies);
5160                         return;
5161                 }
5162                 if (beacon_ies) {
5163                         wpabuf_free(hapd->p2p_beacon_ie);
5164                         hapd->p2p_beacon_ie = beacon_ies;
5165                 }
5166                 wpabuf_free(hapd->p2p_probe_resp_ie);
5167                 hapd->p2p_probe_resp_ie = proberesp_ies;
5168         } else {
5169                 wpabuf_free(beacon_ies);
5170                 wpabuf_free(proberesp_ies);
5171         }
5172         wpa_supplicant_ap_update_beacon(wpa_s);
5173 }
5174
5175
5176 static void wpas_p2p_idle_update(void *ctx, int idle)
5177 {
5178         struct wpa_supplicant *wpa_s = ctx;
5179         if (!wpa_s->ap_iface)
5180                 return;
5181         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
5182         if (idle) {
5183                 if (wpa_s->global->p2p_fail_on_wps_complete &&
5184                     wpa_s->p2p_in_provisioning) {
5185                         wpas_p2p_grpform_fail_after_wps(wpa_s);
5186                         return;
5187                 }
5188                 wpas_p2p_set_group_idle_timeout(wpa_s);
5189         } else
5190                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
5191 }
5192
5193
5194 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
5195                                        struct wpa_ssid *ssid)
5196 {
5197         struct p2p_group *group;
5198         struct p2p_group_config *cfg;
5199
5200         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5201                 return NULL;
5202
5203         cfg = os_zalloc(sizeof(*cfg));
5204         if (cfg == NULL)
5205                 return NULL;
5206
5207         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
5208                 cfg->persistent_group = 2;
5209         else if (ssid->p2p_persistent_group)
5210                 cfg->persistent_group = 1;
5211         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
5212         if (wpa_s->max_stations &&
5213             wpa_s->max_stations < wpa_s->conf->max_num_sta)
5214                 cfg->max_clients = wpa_s->max_stations;
5215         else
5216                 cfg->max_clients = wpa_s->conf->max_num_sta;
5217         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
5218         cfg->ssid_len = ssid->ssid_len;
5219         cfg->cb_ctx = wpa_s;
5220         cfg->ie_update = wpas_p2p_ie_update;
5221         cfg->idle_update = wpas_p2p_idle_update;
5222
5223         group = p2p_group_init(wpa_s->global->p2p, cfg);
5224         if (group == NULL)
5225                 os_free(cfg);
5226         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
5227                 p2p_group_notif_formation_done(group);
5228         wpa_s->p2p_group = group;
5229         return group;
5230 }
5231
5232
5233 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5234                           int registrar)
5235 {
5236         struct wpa_ssid *ssid = wpa_s->current_ssid;
5237
5238         if (!wpa_s->p2p_in_provisioning) {
5239                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
5240                            "provisioning not in progress");
5241                 return;
5242         }
5243
5244         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
5245                 u8 go_dev_addr[ETH_ALEN];
5246                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
5247                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
5248                                           ssid->ssid_len);
5249                 /* Clear any stored provisioning info */
5250                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
5251         }
5252
5253         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5254                              NULL);
5255         wpa_s->p2p_go_group_formation_completed = 1;
5256         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
5257                 /*
5258                  * Use a separate timeout for initial data connection to
5259                  * complete to allow the group to be removed automatically if
5260                  * something goes wrong in this step before the P2P group idle
5261                  * timeout mechanism is taken into use.
5262                  */
5263                 wpa_dbg(wpa_s, MSG_DEBUG,
5264                         "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
5265                         P2P_MAX_INITIAL_CONN_WAIT);
5266                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5267                                        wpas_p2p_group_formation_timeout,
5268                                        wpa_s->parent, NULL);
5269         } else if (ssid) {
5270                 /*
5271                  * Use a separate timeout for initial data connection to
5272                  * complete to allow the group to be removed automatically if
5273                  * the client does not complete data connection successfully.
5274                  */
5275                 wpa_dbg(wpa_s, MSG_DEBUG,
5276                         "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
5277                         P2P_MAX_INITIAL_CONN_WAIT_GO);
5278                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
5279                                        wpas_p2p_group_formation_timeout,
5280                                        wpa_s->parent, NULL);
5281                 /*
5282                  * Complete group formation on first successful data connection
5283                  */
5284                 wpa_s->p2p_go_group_formation_completed = 0;
5285         }
5286         if (wpa_s->global->p2p)
5287                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
5288         wpas_group_formation_completed(wpa_s, 1);
5289 }
5290
5291
5292 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
5293                          struct wps_event_fail *fail)
5294 {
5295         if (!wpa_s->p2p_in_provisioning) {
5296                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
5297                            "provisioning not in progress");
5298                 return;
5299         }
5300
5301         if (wpa_s->go_params) {
5302                 p2p_clear_provisioning_info(
5303                         wpa_s->global->p2p,
5304                         wpa_s->go_params->peer_device_addr);
5305         }
5306
5307         wpas_notify_p2p_wps_failed(wpa_s, fail);
5308
5309         if (wpa_s == wpa_s->global->p2p_group_formation) {
5310                 /*
5311                  * Allow some time for the failed WPS negotiation exchange to
5312                  * complete, but remove the group since group formation cannot
5313                  * succeed after provisioning failure.
5314                  */
5315                 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
5316                 wpa_s->global->p2p_fail_on_wps_complete = 1;
5317                 eloop_deplete_timeout(0, 50000,
5318                                       wpas_p2p_group_formation_timeout,
5319                                       wpa_s->parent, NULL);
5320         }
5321 }
5322
5323
5324 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
5325 {
5326         if (!wpa_s->global->p2p_fail_on_wps_complete ||
5327             !wpa_s->p2p_in_provisioning)
5328                 return 0;
5329
5330         wpas_p2p_grpform_fail_after_wps(wpa_s);
5331
5332         return 1;
5333 }
5334
5335
5336 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5337                        const char *config_method,
5338                        enum wpas_p2p_prov_disc_use use)
5339 {
5340         u16 config_methods;
5341
5342         wpa_s->p2p_fallback_to_go_neg = 0;
5343         wpa_s->pending_pd_use = NORMAL_PD;
5344         if (os_strncmp(config_method, "display", 7) == 0)
5345                 config_methods = WPS_CONFIG_DISPLAY;
5346         else if (os_strncmp(config_method, "keypad", 6) == 0)
5347                 config_methods = WPS_CONFIG_KEYPAD;
5348         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
5349                  os_strncmp(config_method, "pushbutton", 10) == 0)
5350                 config_methods = WPS_CONFIG_PUSHBUTTON;
5351         else {
5352                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
5353                 return -1;
5354         }
5355
5356         if (use == WPAS_P2P_PD_AUTO) {
5357                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
5358                 wpa_s->pending_pd_config_methods = config_methods;
5359                 wpa_s->p2p_auto_pd = 1;
5360                 wpa_s->p2p_auto_join = 0;
5361                 wpa_s->pending_pd_before_join = 0;
5362                 wpa_s->auto_pd_scan_retry = 0;
5363                 wpas_p2p_stop_find(wpa_s);
5364                 wpa_s->p2p_join_scan_count = 0;
5365                 os_get_reltime(&wpa_s->p2p_auto_started);
5366                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
5367                            wpa_s->p2p_auto_started.sec,
5368                            wpa_s->p2p_auto_started.usec);
5369                 wpas_p2p_join_scan(wpa_s, NULL);
5370                 return 0;
5371         }
5372
5373         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
5374                 return -1;
5375
5376         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr,
5377                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
5378                                  0, 1);
5379 }
5380
5381
5382 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
5383                               char *end)
5384 {
5385         return p2p_scan_result_text(ies, ies_len, buf, end);
5386 }
5387
5388
5389 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
5390 {
5391         if (!offchannel_pending_action_tx(wpa_s))
5392                 return;
5393
5394         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
5395                    "operation request");
5396         offchannel_clear_pending_action_tx(wpa_s);
5397 }
5398
5399
5400 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
5401                   enum p2p_discovery_type type,
5402                   unsigned int num_req_dev_types, const u8 *req_dev_types,
5403                   const u8 *dev_id, unsigned int search_delay)
5404 {
5405         wpas_p2p_clear_pending_action_tx(wpa_s);
5406         wpa_s->p2p_long_listen = 0;
5407
5408         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
5409             wpa_s->p2p_in_provisioning)
5410                 return -1;
5411
5412         wpa_supplicant_cancel_sched_scan(wpa_s);
5413
5414         return p2p_find(wpa_s->global->p2p, timeout, type,
5415                         num_req_dev_types, req_dev_types, dev_id,
5416                         search_delay);
5417 }
5418
5419
5420 static int wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
5421 {
5422         wpas_p2p_clear_pending_action_tx(wpa_s);
5423         wpa_s->p2p_long_listen = 0;
5424         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
5425         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5426
5427         if (wpa_s->global->p2p)
5428                 p2p_stop_find(wpa_s->global->p2p);
5429
5430         return 0;
5431 }
5432
5433
5434 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
5435 {
5436         if (wpas_p2p_stop_find_oper(wpa_s) > 0)
5437                 return;
5438         wpas_p2p_remove_pending_group_interface(wpa_s);
5439 }
5440
5441
5442 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
5443 {
5444         struct wpa_supplicant *wpa_s = eloop_ctx;
5445         wpa_s->p2p_long_listen = 0;
5446 }
5447
5448
5449 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
5450 {
5451         int res;
5452
5453         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5454                 return -1;
5455
5456         wpa_supplicant_cancel_sched_scan(wpa_s);
5457         wpas_p2p_clear_pending_action_tx(wpa_s);
5458
5459         if (timeout == 0) {
5460                 /*
5461                  * This is a request for unlimited Listen state. However, at
5462                  * least for now, this is mapped to a Listen state for one
5463                  * hour.
5464                  */
5465                 timeout = 3600;
5466         }
5467         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
5468         wpa_s->p2p_long_listen = 0;
5469
5470         /*
5471          * Stop previous find/listen operation to avoid trying to request a new
5472          * remain-on-channel operation while the driver is still running the
5473          * previous one.
5474          */
5475         if (wpa_s->global->p2p)
5476                 p2p_stop_find(wpa_s->global->p2p);
5477
5478         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
5479         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
5480                 wpa_s->p2p_long_listen = timeout * 1000;
5481                 eloop_register_timeout(timeout, 0,
5482                                        wpas_p2p_long_listen_timeout,
5483                                        wpa_s, NULL);
5484         }
5485
5486         return res;
5487 }
5488
5489
5490 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
5491                           u8 *buf, size_t len, int p2p_group)
5492 {
5493         struct wpabuf *p2p_ie;
5494         int ret;
5495
5496         if (wpa_s->global->p2p_disabled)
5497                 return -1;
5498         if (wpa_s->global->p2p == NULL)
5499                 return -1;
5500         if (bss == NULL)
5501                 return -1;
5502
5503         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
5504         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
5505                                p2p_group, p2p_ie);
5506         wpabuf_free(p2p_ie);
5507
5508         return ret;
5509 }
5510
5511
5512 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
5513                           const u8 *dst, const u8 *bssid,
5514                           const u8 *ie, size_t ie_len, int ssi_signal)
5515 {
5516         if (wpa_s->global->p2p_disabled)
5517                 return 0;
5518         if (wpa_s->global->p2p == NULL)
5519                 return 0;
5520
5521         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
5522                                  ie, ie_len)) {
5523         case P2P_PREQ_NOT_P2P:
5524                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
5525                                  ssi_signal);
5526                 /* fall through */
5527         case P2P_PREQ_MALFORMED:
5528         case P2P_PREQ_NOT_LISTEN:
5529         case P2P_PREQ_NOT_PROCESSED:
5530         default: /* make gcc happy */
5531                 return 0;
5532         case P2P_PREQ_PROCESSED:
5533                 return 1;
5534         }
5535 }
5536
5537
5538 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
5539                         const u8 *sa, const u8 *bssid,
5540                         u8 category, const u8 *data, size_t len, int freq)
5541 {
5542         if (wpa_s->global->p2p_disabled)
5543                 return;
5544         if (wpa_s->global->p2p == NULL)
5545                 return;
5546
5547         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
5548                       freq);
5549 }
5550
5551
5552 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
5553 {
5554         if (wpa_s->global->p2p_disabled)
5555                 return;
5556         if (wpa_s->global->p2p == NULL)
5557                 return;
5558
5559         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
5560 }
5561
5562
5563 void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
5564 {
5565         p2p_group_deinit(wpa_s->p2p_group);
5566         wpa_s->p2p_group = NULL;
5567
5568         wpa_s->ap_configured_cb = NULL;
5569         wpa_s->ap_configured_cb_ctx = NULL;
5570         wpa_s->ap_configured_cb_data = NULL;
5571         wpa_s->connect_without_scan = NULL;
5572 }
5573
5574
5575 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
5576 {
5577         wpa_s->p2p_long_listen = 0;
5578
5579         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5580                 return -1;
5581
5582         return p2p_reject(wpa_s->global->p2p, addr);
5583 }
5584
5585
5586 /* Invite to reinvoke a persistent group */
5587 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5588                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
5589                     int ht40, int vht, int pref_freq)
5590 {
5591         enum p2p_invite_role role;
5592         u8 *bssid = NULL;
5593         int force_freq = 0;
5594         int res;
5595         int no_pref_freq_given = pref_freq == 0;
5596
5597         wpa_s->global->p2p_invite_group = NULL;
5598         if (peer_addr)
5599                 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
5600         else
5601                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
5602
5603         wpa_s->p2p_persistent_go_freq = freq;
5604         wpa_s->p2p_go_ht40 = !!ht40;
5605         if (ssid->mode == WPAS_MODE_P2P_GO) {
5606                 role = P2P_INVITE_ROLE_GO;
5607                 if (peer_addr == NULL) {
5608                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
5609                                    "address in invitation command");
5610                         return -1;
5611                 }
5612                 if (wpas_p2p_create_iface(wpa_s)) {
5613                         if (wpas_p2p_add_group_interface(wpa_s,
5614                                                          WPA_IF_P2P_GO) < 0) {
5615                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
5616                                            "allocate a new interface for the "
5617                                            "group");
5618                                 return -1;
5619                         }
5620                         bssid = wpa_s->pending_interface_addr;
5621                 } else
5622                         bssid = wpa_s->own_addr;
5623         } else {
5624                 role = P2P_INVITE_ROLE_CLIENT;
5625                 peer_addr = ssid->bssid;
5626         }
5627         wpa_s->pending_invite_ssid_id = ssid->id;
5628
5629         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5630                                    role == P2P_INVITE_ROLE_GO);
5631         if (res)
5632                 return res;
5633
5634         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5635                 return -1;
5636
5637         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
5638             no_pref_freq_given && pref_freq > 0 &&
5639             wpa_s->num_multichan_concurrent > 1 &&
5640             wpas_p2p_num_unused_channels(wpa_s) > 0) {
5641                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
5642                            pref_freq);
5643                 pref_freq = 0;
5644         }
5645
5646         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
5647                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
5648                           1, pref_freq);
5649 }
5650
5651
5652 /* Invite to join an active group */
5653 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
5654                           const u8 *peer_addr, const u8 *go_dev_addr)
5655 {
5656         struct wpa_global *global = wpa_s->global;
5657         enum p2p_invite_role role;
5658         u8 *bssid = NULL;
5659         struct wpa_ssid *ssid;
5660         int persistent;
5661         int freq = 0, force_freq = 0, pref_freq = 0;
5662         int res;
5663
5664         wpa_s->p2p_persistent_go_freq = 0;
5665         wpa_s->p2p_go_ht40 = 0;
5666         wpa_s->p2p_go_vht = 0;
5667
5668         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5669                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5670                         break;
5671         }
5672         if (wpa_s == NULL) {
5673                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
5674                 return -1;
5675         }
5676
5677         ssid = wpa_s->current_ssid;
5678         if (ssid == NULL) {
5679                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
5680                            "invitation");
5681                 return -1;
5682         }
5683
5684         wpa_s->global->p2p_invite_group = wpa_s;
5685         persistent = ssid->p2p_persistent_group &&
5686                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
5687                                         ssid->ssid, ssid->ssid_len);
5688
5689         if (ssid->mode == WPAS_MODE_P2P_GO) {
5690                 role = P2P_INVITE_ROLE_ACTIVE_GO;
5691                 bssid = wpa_s->own_addr;
5692                 if (go_dev_addr == NULL)
5693                         go_dev_addr = wpa_s->global->p2p_dev_addr;
5694                 freq = ssid->frequency;
5695         } else {
5696                 role = P2P_INVITE_ROLE_CLIENT;
5697                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
5698                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
5699                                    "invite to current group");
5700                         return -1;
5701                 }
5702                 bssid = wpa_s->bssid;
5703                 if (go_dev_addr == NULL &&
5704                     !is_zero_ether_addr(wpa_s->go_dev_addr))
5705                         go_dev_addr = wpa_s->go_dev_addr;
5706                 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
5707                         (int) wpa_s->assoc_freq;
5708         }
5709         wpa_s->parent->pending_invite_ssid_id = -1;
5710
5711         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5712                 return -1;
5713
5714         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5715                                    role == P2P_INVITE_ROLE_ACTIVE_GO);
5716         if (res)
5717                 return res;
5718         wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
5719
5720         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
5721                           ssid->ssid, ssid->ssid_len, force_freq,
5722                           go_dev_addr, persistent, pref_freq);
5723 }
5724
5725
5726 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
5727 {
5728         struct wpa_ssid *ssid = wpa_s->current_ssid;
5729         const char *ssid_txt;
5730         u8 go_dev_addr[ETH_ALEN];
5731         int network_id = -1;
5732         int persistent;
5733         int freq;
5734
5735         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
5736                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5737                                      wpa_s->parent, NULL);
5738         }
5739
5740         if (!wpa_s->show_group_started || !ssid)
5741                 return;
5742
5743         wpa_s->show_group_started = 0;
5744
5745         ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
5746         os_memset(go_dev_addr, 0, ETH_ALEN);
5747         if (ssid->bssid_set)
5748                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
5749         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
5750                                                ssid->ssid_len);
5751         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
5752
5753         if (wpa_s->global->p2p_group_formation == wpa_s)
5754                 wpa_s->global->p2p_group_formation = NULL;
5755
5756         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
5757                 (int) wpa_s->assoc_freq;
5758         if (ssid->passphrase == NULL && ssid->psk_set) {
5759                 char psk[65];
5760                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
5761                 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
5762                                "%s client ssid=\"%s\" freq=%d psk=%s "
5763                                "go_dev_addr=" MACSTR "%s",
5764                                wpa_s->ifname, ssid_txt, freq, psk,
5765                                MAC2STR(go_dev_addr),
5766                                persistent ? " [PERSISTENT]" : "");
5767         } else {
5768                 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
5769                                "%s client ssid=\"%s\" freq=%d "
5770                                "passphrase=\"%s\" go_dev_addr=" MACSTR "%s",
5771                                wpa_s->ifname, ssid_txt, freq,
5772                                ssid->passphrase ? ssid->passphrase : "",
5773                                MAC2STR(go_dev_addr),
5774                                persistent ? " [PERSISTENT]" : "");
5775         }
5776
5777         if (persistent)
5778                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
5779                                                              ssid, go_dev_addr);
5780         if (network_id < 0)
5781                 network_id = ssid->id;
5782         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
5783 }
5784
5785
5786 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
5787                           u32 interval1, u32 duration2, u32 interval2)
5788 {
5789         int ret;
5790
5791         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5792                 return -1;
5793
5794         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
5795             wpa_s->current_ssid == NULL ||
5796             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
5797                 return -1;
5798
5799         ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
5800                                wpa_s->own_addr, wpa_s->assoc_freq,
5801                                duration1, interval1, duration2, interval2);
5802         if (ret == 0)
5803                 wpa_s->waiting_presence_resp = 1;
5804
5805         return ret;
5806 }
5807
5808
5809 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
5810                         unsigned int interval)
5811 {
5812         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5813                 return -1;
5814
5815         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
5816 }
5817
5818
5819 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
5820 {
5821         if (wpa_s->current_ssid == NULL) {
5822                 /*
5823                  * current_ssid can be cleared when P2P client interface gets
5824                  * disconnected, so assume this interface was used as P2P
5825                  * client.
5826                  */
5827                 return 1;
5828         }
5829         return wpa_s->current_ssid->p2p_group &&
5830                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
5831 }
5832
5833
5834 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
5835 {
5836         struct wpa_supplicant *wpa_s = eloop_ctx;
5837
5838         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
5839                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
5840                            "disabled");
5841                 return;
5842         }
5843
5844         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
5845                    "group");
5846         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
5847 }
5848
5849
5850 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
5851 {
5852         int timeout;
5853
5854         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
5855                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
5856
5857         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
5858                 return;
5859
5860         timeout = wpa_s->conf->p2p_group_idle;
5861         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
5862             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
5863             timeout = P2P_MAX_CLIENT_IDLE;
5864
5865         if (timeout == 0)
5866                 return;
5867
5868         if (timeout < 0) {
5869                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
5870                         timeout = 0; /* special client mode no-timeout */
5871                 else
5872                         return;
5873         }
5874
5875         if (wpa_s->p2p_in_provisioning) {
5876                 /*
5877                  * Use the normal group formation timeout during the
5878                  * provisioning phase to avoid terminating this process too
5879                  * early due to group idle timeout.
5880                  */
5881                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
5882                            "during provisioning");
5883                 return;
5884         }
5885
5886         if (wpa_s->show_group_started) {
5887                 /*
5888                  * Use the normal group formation timeout between the end of
5889                  * the provisioning phase and completion of 4-way handshake to
5890                  * avoid terminating this process too early due to group idle
5891                  * timeout.
5892                  */
5893                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
5894                            "while waiting for initial 4-way handshake to "
5895                            "complete");
5896                 return;
5897         }
5898
5899         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
5900                    timeout);
5901         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
5902                                wpa_s, NULL);
5903 }
5904
5905
5906 /* Returns 1 if the interface was removed */
5907 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
5908                           u16 reason_code, const u8 *ie, size_t ie_len,
5909                           int locally_generated)
5910 {
5911         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5912                 return 0;
5913
5914         if (!locally_generated)
5915                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
5916                                  ie_len);
5917
5918         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
5919             wpa_s->current_ssid &&
5920             wpa_s->current_ssid->p2p_group &&
5921             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
5922                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
5923                            "session is ending");
5924                 if (wpas_p2p_group_delete(wpa_s,
5925                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
5926                     > 0)
5927                         return 1;
5928         }
5929
5930         return 0;
5931 }
5932
5933
5934 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
5935                              u16 reason_code, const u8 *ie, size_t ie_len,
5936                              int locally_generated)
5937 {
5938         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5939                 return;
5940
5941         if (!locally_generated)
5942                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
5943                                    ie_len);
5944 }
5945
5946
5947 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
5948 {
5949         struct p2p_data *p2p = wpa_s->global->p2p;
5950
5951         if (p2p == NULL)
5952                 return;
5953
5954         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
5955                 return;
5956
5957         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
5958                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
5959
5960         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
5961                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
5962
5963         if (wpa_s->wps &&
5964             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
5965                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
5966
5967         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
5968                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
5969
5970         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
5971                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
5972                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
5973                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
5974                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
5975         }
5976
5977         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
5978                 p2p_set_sec_dev_types(p2p,
5979                                       (void *) wpa_s->conf->sec_device_type,
5980                                       wpa_s->conf->num_sec_device_types);
5981
5982         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
5983                 int i;
5984                 p2p_remove_wps_vendor_extensions(p2p);
5985                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
5986                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
5987                                 continue;
5988                         p2p_add_wps_vendor_extension(
5989                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
5990                 }
5991         }
5992
5993         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
5994             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
5995                 char country[3];
5996                 country[0] = wpa_s->conf->country[0];
5997                 country[1] = wpa_s->conf->country[1];
5998                 country[2] = 0x04;
5999                 p2p_set_country(p2p, country);
6000         }
6001
6002         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
6003                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
6004                                      wpa_s->conf->p2p_ssid_postfix ?
6005                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
6006                                      0);
6007         }
6008
6009         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
6010                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
6011
6012         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
6013                 u8 reg_class, channel;
6014                 int ret;
6015                 unsigned int r;
6016                 if (wpa_s->conf->p2p_listen_reg_class &&
6017                     wpa_s->conf->p2p_listen_channel) {
6018                         reg_class = wpa_s->conf->p2p_listen_reg_class;
6019                         channel = wpa_s->conf->p2p_listen_channel;
6020                 } else {
6021                         reg_class = 81;
6022                         /*
6023                          * Pick one of the social channels randomly as the
6024                          * listen channel.
6025                          */
6026                         os_get_random((u8 *) &r, sizeof(r));
6027                         channel = 1 + (r % 3) * 5;
6028                 }
6029                 ret = p2p_set_listen_channel(p2p, reg_class, channel);
6030                 if (ret)
6031                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
6032                                    "failed: %d", ret);
6033         }
6034         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
6035                 u8 op_reg_class, op_channel, cfg_op_channel;
6036                 int ret = 0;
6037                 unsigned int r;
6038                 if (wpa_s->conf->p2p_oper_reg_class &&
6039                     wpa_s->conf->p2p_oper_channel) {
6040                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
6041                         op_channel = wpa_s->conf->p2p_oper_channel;
6042                         cfg_op_channel = 1;
6043                 } else {
6044                         op_reg_class = 81;
6045                         /*
6046                          * Use random operation channel from (1, 6, 11)
6047                          *if no other preference is indicated.
6048                          */
6049                         os_get_random((u8 *) &r, sizeof(r));
6050                         op_channel = 1 + (r % 3) * 5;
6051                         cfg_op_channel = 0;
6052                 }
6053                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
6054                                            cfg_op_channel);
6055                 if (ret)
6056                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
6057                                    "failed: %d", ret);
6058         }
6059
6060         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
6061                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
6062                                       wpa_s->conf->p2p_pref_chan) < 0) {
6063                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
6064                                    "update failed");
6065                 }
6066
6067                 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
6068                         wpa_printf(MSG_ERROR, "P2P: No GO channel list "
6069                                    "update failed");
6070                 }
6071         }
6072 }
6073
6074
6075 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
6076                      int duration)
6077 {
6078         if (!wpa_s->ap_iface)
6079                 return -1;
6080         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
6081                                    duration);
6082 }
6083
6084
6085 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
6086 {
6087         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6088                 return -1;
6089
6090         wpa_s->global->cross_connection = enabled;
6091         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
6092
6093         if (!enabled) {
6094                 struct wpa_supplicant *iface;
6095
6096                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
6097                 {
6098                         if (iface->cross_connect_enabled == 0)
6099                                 continue;
6100
6101                         iface->cross_connect_enabled = 0;
6102                         iface->cross_connect_in_use = 0;
6103                         wpa_msg_global(iface->parent, MSG_INFO,
6104                                        P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6105                                        iface->ifname,
6106                                        iface->cross_connect_uplink);
6107                 }
6108         }
6109
6110         return 0;
6111 }
6112
6113
6114 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
6115 {
6116         struct wpa_supplicant *iface;
6117
6118         if (!uplink->global->cross_connection)
6119                 return;
6120
6121         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
6122                 if (!iface->cross_connect_enabled)
6123                         continue;
6124                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
6125                     0)
6126                         continue;
6127                 if (iface->ap_iface == NULL)
6128                         continue;
6129                 if (iface->cross_connect_in_use)
6130                         continue;
6131
6132                 iface->cross_connect_in_use = 1;
6133                 wpa_msg_global(iface->parent, MSG_INFO,
6134                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
6135                                iface->ifname, iface->cross_connect_uplink);
6136         }
6137 }
6138
6139
6140 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
6141 {
6142         struct wpa_supplicant *iface;
6143
6144         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
6145                 if (!iface->cross_connect_enabled)
6146                         continue;
6147                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
6148                     0)
6149                         continue;
6150                 if (!iface->cross_connect_in_use)
6151                         continue;
6152
6153                 wpa_msg_global(iface->parent, MSG_INFO,
6154                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6155                                iface->ifname, iface->cross_connect_uplink);
6156                 iface->cross_connect_in_use = 0;
6157         }
6158 }
6159
6160
6161 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
6162 {
6163         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
6164             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
6165             wpa_s->cross_connect_disallowed)
6166                 wpas_p2p_disable_cross_connect(wpa_s);
6167         else
6168                 wpas_p2p_enable_cross_connect(wpa_s);
6169         if (!wpa_s->ap_iface &&
6170             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6171                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6172 }
6173
6174
6175 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
6176 {
6177         wpas_p2p_disable_cross_connect(wpa_s);
6178         if (!wpa_s->ap_iface &&
6179             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
6180                                          wpa_s, NULL))
6181                 wpas_p2p_set_group_idle_timeout(wpa_s);
6182 }
6183
6184
6185 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
6186 {
6187         struct wpa_supplicant *iface;
6188
6189         if (!wpa_s->global->cross_connection)
6190                 return;
6191
6192         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
6193                 if (iface == wpa_s)
6194                         continue;
6195                 if (iface->drv_flags &
6196                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
6197                         continue;
6198                 if (iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)
6199                         continue;
6200
6201                 wpa_s->cross_connect_enabled = 1;
6202                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
6203                            sizeof(wpa_s->cross_connect_uplink));
6204                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
6205                            "%s to %s whenever uplink is available",
6206                            wpa_s->ifname, wpa_s->cross_connect_uplink);
6207
6208                 if (iface->ap_iface || iface->current_ssid == NULL ||
6209                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
6210                     iface->cross_connect_disallowed ||
6211                     iface->wpa_state != WPA_COMPLETED)
6212                         break;
6213
6214                 wpa_s->cross_connect_in_use = 1;
6215                 wpa_msg_global(wpa_s->parent, MSG_INFO,
6216                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
6217                                wpa_s->ifname, wpa_s->cross_connect_uplink);
6218                 break;
6219         }
6220 }
6221
6222
6223 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
6224 {
6225         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
6226             !wpa_s->p2p_in_provisioning)
6227                 return 0; /* not P2P client operation */
6228
6229         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
6230                    "session overlap");
6231         if (wpa_s != wpa_s->parent)
6232                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
6233         wpas_p2p_group_formation_failed(wpa_s);
6234         return 1;
6235 }
6236
6237
6238 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
6239 {
6240         struct p2p_channels chan, cli_chan;
6241
6242         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
6243                 return;
6244
6245         os_memset(&chan, 0, sizeof(chan));
6246         os_memset(&cli_chan, 0, sizeof(cli_chan));
6247         if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
6248                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
6249                            "channel list");
6250                 return;
6251         }
6252
6253         p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
6254 }
6255
6256
6257 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
6258                                      struct wpa_scan_results *scan_res)
6259 {
6260         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6261 }
6262
6263
6264 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
6265 {
6266         struct wpa_global *global = wpa_s->global;
6267         int found = 0;
6268         const u8 *peer;
6269
6270         if (global->p2p == NULL)
6271                 return -1;
6272
6273         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
6274
6275         if (wpa_s->pending_interface_name[0] &&
6276             !is_zero_ether_addr(wpa_s->pending_interface_addr))
6277                 found = 1;
6278
6279         peer = p2p_get_go_neg_peer(global->p2p);
6280         if (peer) {
6281                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
6282                            MACSTR, MAC2STR(peer));
6283                 p2p_unauthorize(global->p2p, peer);
6284                 found = 1;
6285         }
6286
6287         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
6288                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
6289                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
6290                 found = 1;
6291         }
6292
6293         if (wpa_s->pending_pd_before_join) {
6294                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
6295                 wpa_s->pending_pd_before_join = 0;
6296                 found = 1;
6297         }
6298
6299         wpas_p2p_stop_find(wpa_s);
6300
6301         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6302                 if (wpa_s == global->p2p_group_formation &&
6303                     (wpa_s->p2p_in_provisioning ||
6304                      wpa_s->parent->pending_interface_type ==
6305                      WPA_IF_P2P_CLIENT)) {
6306                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
6307                                    "formation found - cancelling",
6308                                    wpa_s->ifname);
6309                         found = 1;
6310                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6311                                              wpa_s->parent, NULL);
6312                         if (wpa_s->p2p_in_provisioning) {
6313                                 wpas_group_formation_completed(wpa_s, 0);
6314                                 break;
6315                         }
6316                         wpas_p2p_group_delete(wpa_s,
6317                                               P2P_GROUP_REMOVAL_REQUESTED);
6318                         break;
6319                 }
6320         }
6321
6322         if (!found) {
6323                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
6324                 return -1;
6325         }
6326
6327         return 0;
6328 }
6329
6330
6331 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
6332 {
6333         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6334                 return;
6335
6336         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
6337                    "being available anymore");
6338         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
6339 }
6340
6341
6342 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
6343                                    int freq_24, int freq_5, int freq_overall)
6344 {
6345         struct p2p_data *p2p = wpa_s->global->p2p;
6346         if (p2p == NULL)
6347                 return;
6348         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
6349 }
6350
6351
6352 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
6353 {
6354         u8 peer[ETH_ALEN];
6355         struct p2p_data *p2p = wpa_s->global->p2p;
6356
6357         if (p2p == NULL)
6358                 return -1;
6359
6360         if (hwaddr_aton(addr, peer))
6361                 return -1;
6362
6363         return p2p_unauthorize(p2p, peer);
6364 }
6365
6366
6367 /**
6368  * wpas_p2p_disconnect - Disconnect from a P2P Group
6369  * @wpa_s: Pointer to wpa_supplicant data
6370  * Returns: 0 on success, -1 on failure
6371  *
6372  * This can be used to disconnect from a group in which the local end is a P2P
6373  * Client or to end a P2P Group in case the local end is the Group Owner. If a
6374  * virtual network interface was created for this group, that interface will be
6375  * removed. Otherwise, only the configured P2P group network will be removed
6376  * from the interface.
6377  */
6378 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
6379 {
6380
6381         if (wpa_s == NULL)
6382                 return -1;
6383
6384         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
6385                 -1 : 0;
6386 }
6387
6388
6389 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
6390 {
6391         int ret;
6392
6393         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6394                 return 0;
6395
6396         ret = p2p_in_progress(wpa_s->global->p2p);
6397         if (ret == 0) {
6398                 /*
6399                  * Check whether there is an ongoing WPS provisioning step (or
6400                  * other parts of group formation) on another interface since
6401                  * p2p_in_progress() does not report this to avoid issues for
6402                  * scans during such provisioning step.
6403                  */
6404                 if (wpa_s->global->p2p_group_formation &&
6405                     wpa_s->global->p2p_group_formation != wpa_s) {
6406                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
6407                                 "in group formation",
6408                                 wpa_s->global->p2p_group_formation->ifname);
6409                         ret = 1;
6410                 }
6411         }
6412
6413         if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
6414                 struct os_reltime now;
6415                 os_get_reltime(&now);
6416                 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
6417                                        P2P_MAX_INITIAL_CONN_WAIT_GO)) {
6418                         /* Wait for the first client has expired */
6419                         wpa_s->global->p2p_go_wait_client.sec = 0;
6420                 } else {
6421                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
6422                         ret = 1;
6423                 }
6424         }
6425
6426         return ret;
6427 }
6428
6429
6430 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
6431                               struct wpa_ssid *ssid)
6432 {
6433         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
6434             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6435                                  wpa_s->parent, NULL) > 0) {
6436                 /**
6437                  * Remove the network by scheduling the group formation
6438                  * timeout to happen immediately. The teardown code
6439                  * needs to be scheduled to run asynch later so that we
6440                  * don't delete data from under ourselves unexpectedly.
6441                  * Calling wpas_p2p_group_formation_timeout directly
6442                  * causes a series of crashes in WPS failure scenarios.
6443                  */
6444                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
6445                            "P2P group network getting removed");
6446                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
6447                                        wpa_s->parent, NULL);
6448         }
6449 }
6450
6451
6452 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
6453                                           const u8 *addr, const u8 *ssid,
6454                                           size_t ssid_len)
6455 {
6456         struct wpa_ssid *s;
6457         size_t i;
6458
6459         for (s = wpa_s->conf->ssid; s; s = s->next) {
6460                 if (s->disabled != 2)
6461                         continue;
6462                 if (ssid &&
6463                     (ssid_len != s->ssid_len ||
6464                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
6465                         continue;
6466                 if (addr == NULL) {
6467                         if (s->mode == WPAS_MODE_P2P_GO)
6468                                 return s;
6469                         continue;
6470                 }
6471                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
6472                         return s; /* peer is GO in the persistent group */
6473                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
6474                         continue;
6475                 for (i = 0; i < s->num_p2p_clients; i++) {
6476                         if (os_memcmp(s->p2p_client_list + i * ETH_ALEN,
6477                                       addr, ETH_ALEN) == 0)
6478                                 return s; /* peer is P2P client in persistent
6479                                            * group */
6480                 }
6481         }
6482
6483         return NULL;
6484 }
6485
6486
6487 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
6488                                        const u8 *addr)
6489 {
6490         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6491                                  wpa_s->parent, NULL) > 0) {
6492                 /*
6493                  * This can happen if WPS provisioning step is not terminated
6494                  * cleanly (e.g., P2P Client does not send WSC_Done). Since the
6495                  * peer was able to connect, there is no need to time out group
6496                  * formation after this, though. In addition, this is used with
6497                  * the initial connection wait on the GO as a separate formation
6498                  * timeout and as such, expected to be hit after the initial WPS
6499                  * provisioning step.
6500                  */
6501                 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
6502         }
6503         if (!wpa_s->p2p_go_group_formation_completed) {
6504                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
6505                 wpa_s->p2p_go_group_formation_completed = 1;
6506                 wpa_s->global->p2p_group_formation = NULL;
6507                 wpa_s->p2p_in_provisioning = 0;
6508         }
6509         wpa_s->global->p2p_go_wait_client.sec = 0;
6510         if (addr == NULL)
6511                 return;
6512         wpas_p2p_add_persistent_group_client(wpa_s, addr);
6513 }
6514
6515
6516 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
6517                                         int group_added)
6518 {
6519         struct wpa_supplicant *group = wpa_s;
6520         if (wpa_s->global->p2p_group_formation)
6521                 group = wpa_s->global->p2p_group_formation;
6522         wpa_s = wpa_s->parent;
6523         offchannel_send_action_done(wpa_s);
6524         if (group_added)
6525                 wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
6526         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
6527         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
6528                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
6529                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
6530                          wpa_s->p2p_persistent_id,
6531                          wpa_s->p2p_pd_before_go_neg,
6532                          wpa_s->p2p_go_ht40,
6533                          wpa_s->p2p_go_vht);
6534 }
6535
6536
6537 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
6538 {
6539         if (!wpa_s->p2p_fallback_to_go_neg ||
6540             wpa_s->p2p_in_provisioning <= 5)
6541                 return 0;
6542
6543         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
6544                 return 0; /* peer operating as a GO */
6545
6546         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
6547                 "fallback to GO Negotiation");
6548         wpas_p2p_fallback_to_go_neg(wpa_s, 1);
6549
6550         return 1;
6551 }
6552
6553
6554 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
6555 {
6556         struct wpa_supplicant *ifs;
6557
6558         if (wpa_s->wpa_state > WPA_SCANNING) {
6559                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
6560                         "concurrent operation",
6561                         P2P_CONCURRENT_SEARCH_DELAY);
6562                 return P2P_CONCURRENT_SEARCH_DELAY;
6563         }
6564
6565         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
6566                          radio_list) {
6567                 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
6568                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
6569                                 "delay due to concurrent operation on "
6570                                 "interface %s",
6571                                 P2P_CONCURRENT_SEARCH_DELAY, ifs->ifname);
6572                         return P2P_CONCURRENT_SEARCH_DELAY;
6573                 }
6574         }
6575
6576         return 0;
6577 }
6578
6579
6580 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
6581                                      struct wpa_ssid *s, const u8 *addr,
6582                                      int iface_addr)
6583 {
6584         struct psk_list_entry *psk, *tmp;
6585         int changed = 0;
6586
6587         dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
6588                               list) {
6589                 if ((iface_addr && !psk->p2p &&
6590                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
6591                     (!iface_addr && psk->p2p &&
6592                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
6593                         wpa_dbg(wpa_s, MSG_DEBUG,
6594                                 "P2P: Remove persistent group PSK list entry for "
6595                                 MACSTR " p2p=%u",
6596                                 MAC2STR(psk->addr), psk->p2p);
6597                         dl_list_del(&psk->list);
6598                         os_free(psk);
6599                         changed++;
6600                 }
6601         }
6602
6603         return changed;
6604 }
6605
6606
6607 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
6608                          const u8 *p2p_dev_addr,
6609                          const u8 *psk, size_t psk_len)
6610 {
6611         struct wpa_ssid *ssid = wpa_s->current_ssid;
6612         struct wpa_ssid *persistent;
6613         struct psk_list_entry *p;
6614
6615         if (psk_len != sizeof(p->psk))
6616                 return;
6617
6618         if (p2p_dev_addr) {
6619                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
6620                         " p2p_dev_addr=" MACSTR,
6621                         MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
6622                 if (is_zero_ether_addr(p2p_dev_addr))
6623                         p2p_dev_addr = NULL;
6624         } else {
6625                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
6626                         MAC2STR(mac_addr));
6627         }
6628
6629         if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
6630                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
6631                 /* To be added to persistent group once created */
6632                 if (wpa_s->global->add_psk == NULL) {
6633                         wpa_s->global->add_psk = os_zalloc(sizeof(*p));
6634                         if (wpa_s->global->add_psk == NULL)
6635                                 return;
6636                 }
6637                 p = wpa_s->global->add_psk;
6638                 if (p2p_dev_addr) {
6639                         p->p2p = 1;
6640                         os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
6641                 } else {
6642                         p->p2p = 0;
6643                         os_memcpy(p->addr, mac_addr, ETH_ALEN);
6644                 }
6645                 os_memcpy(p->psk, psk, psk_len);
6646                 return;
6647         }
6648
6649         if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
6650                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
6651                 return;
6652         }
6653
6654         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
6655                                              ssid->ssid_len);
6656         if (!persistent) {
6657                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
6658                 return;
6659         }
6660
6661         p = os_zalloc(sizeof(*p));
6662         if (p == NULL)
6663                 return;
6664         if (p2p_dev_addr) {
6665                 p->p2p = 1;
6666                 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
6667         } else {
6668                 p->p2p = 0;
6669                 os_memcpy(p->addr, mac_addr, ETH_ALEN);
6670         }
6671         os_memcpy(p->psk, psk, psk_len);
6672
6673         if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS) {
6674                 struct psk_list_entry *last;
6675                 last = dl_list_last(&persistent->psk_list,
6676                                     struct psk_list_entry, list);
6677                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
6678                         MACSTR " (p2p=%u) to make room for a new one",
6679                         MAC2STR(last->addr), last->p2p);
6680                 dl_list_del(&last->list);
6681                 os_free(last);
6682         }
6683
6684         wpas_p2p_remove_psk_entry(wpa_s->parent, persistent,
6685                                   p2p_dev_addr ? p2p_dev_addr : mac_addr,
6686                                   p2p_dev_addr == NULL);
6687         if (p2p_dev_addr) {
6688                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
6689                         MACSTR, MAC2STR(p2p_dev_addr));
6690         } else {
6691                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
6692                         MAC2STR(mac_addr));
6693         }
6694         dl_list_add(&persistent->psk_list, &p->list);
6695
6696 #ifndef CONFIG_NO_CONFIG_WRITE
6697         if (wpa_s->parent->conf->update_config &&
6698             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
6699                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
6700 #endif /* CONFIG_NO_CONFIG_WRITE */
6701 }
6702
6703
6704 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
6705                                 struct wpa_ssid *s, const u8 *addr,
6706                                 int iface_addr)
6707 {
6708         int res;
6709
6710         res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
6711         if (res > 0) {
6712 #ifndef CONFIG_NO_CONFIG_WRITE
6713                 if (wpa_s->conf->update_config &&
6714                     wpa_config_write(wpa_s->confname, wpa_s->conf))
6715                         wpa_dbg(wpa_s, MSG_DEBUG,
6716                                 "P2P: Failed to update configuration");
6717 #endif /* CONFIG_NO_CONFIG_WRITE */
6718         }
6719 }
6720
6721
6722 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
6723                                       const u8 *peer, int iface_addr)
6724 {
6725         struct hostapd_data *hapd;
6726         struct hostapd_wpa_psk *psk, *prev, *rem;
6727         struct sta_info *sta;
6728
6729         if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
6730             wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
6731                 return;
6732
6733         /* Remove per-station PSK entry */
6734         hapd = wpa_s->ap_iface->bss[0];
6735         prev = NULL;
6736         psk = hapd->conf->ssid.wpa_psk;
6737         while (psk) {
6738                 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
6739                     (!iface_addr &&
6740                      os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
6741                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
6742                                 MACSTR " iface_addr=%d",
6743                                 MAC2STR(peer), iface_addr);
6744                         if (prev)
6745                                 prev->next = psk->next;
6746                         else
6747                                 hapd->conf->ssid.wpa_psk = psk->next;
6748                         rem = psk;
6749                         psk = psk->next;
6750                         os_free(rem);
6751                 } else {
6752                         prev = psk;
6753                         psk = psk->next;
6754                 }
6755         }
6756
6757         /* Disconnect from group */
6758         if (iface_addr)
6759                 sta = ap_get_sta(hapd, peer);
6760         else
6761                 sta = ap_get_sta_p2p(hapd, peer);
6762         if (sta) {
6763                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
6764                         " (iface_addr=%d) from group",
6765                         MAC2STR(peer), iface_addr);
6766                 hostapd_drv_sta_deauth(hapd, sta->addr,
6767                                        WLAN_REASON_DEAUTH_LEAVING);
6768                 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
6769         }
6770 }
6771
6772
6773 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
6774                             int iface_addr)
6775 {
6776         struct wpa_ssid *s;
6777         struct wpa_supplicant *w;
6778
6779         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
6780
6781         /* Remove from any persistent group */
6782         for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
6783                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
6784                         continue;
6785                 if (!iface_addr)
6786                         wpas_remove_persistent_peer(wpa_s, s, peer, 0);
6787                 wpas_p2p_remove_psk(wpa_s->parent, s, peer, iface_addr);
6788         }
6789
6790         /* Remove from any operating group */
6791         for (w = wpa_s->global->ifaces; w; w = w->next)
6792                 wpas_p2p_remove_client_go(w, peer, iface_addr);
6793 }
6794
6795
6796 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
6797 {
6798         struct wpa_supplicant *wpa_s = eloop_ctx;
6799         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
6800 }
6801
6802
6803 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
6804 {
6805         struct wpa_supplicant *wpa_s = eloop_ctx;
6806
6807         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
6808         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
6809 }
6810
6811
6812 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
6813                                         struct wpa_ssid *ssid)
6814 {
6815         struct wpa_supplicant *iface;
6816
6817         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
6818                 if (!iface->current_ssid ||
6819                     iface->current_ssid->frequency == freq ||
6820                     (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
6821                      !iface->current_ssid->p2p_group))
6822                         continue;
6823
6824                 /* Remove the connection with least priority */
6825                 if (!wpas_is_p2p_prioritized(iface)) {
6826                         /* STA connection has priority over existing
6827                          * P2P connection, so remove the interface. */
6828                         wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
6829                         eloop_register_timeout(0, 0,
6830                                                wpas_p2p_group_freq_conflict,
6831                                                iface, NULL);
6832                         /* If connection in progress is P2P connection, do not
6833                          * proceed for the connection. */
6834                         if (wpa_s == iface)
6835                                 return -1;
6836                         else
6837                                 return 0;
6838                 } else {
6839                         /* P2P connection has priority, disable the STA network
6840                          */
6841                         wpa_supplicant_disable_network(wpa_s->global->ifaces,
6842                                                        ssid);
6843                         wpa_msg(wpa_s->global->ifaces, MSG_INFO,
6844                                 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
6845                         os_memset(wpa_s->global->ifaces->pending_bssid, 0,
6846                                   ETH_ALEN);
6847                         /* If P2P connection is in progress, continue
6848                          * connecting...*/
6849                         if (wpa_s == iface)
6850                                 return 0;
6851                         else
6852                                 return -1;
6853                 }
6854         }
6855
6856         return 0;
6857 }
6858
6859
6860 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
6861 {
6862         struct wpa_ssid *ssid = wpa_s->current_ssid;
6863
6864         if (ssid == NULL || !ssid->p2p_group)
6865                 return 0;
6866
6867         if (wpa_s->p2p_last_4way_hs_fail &&
6868             wpa_s->p2p_last_4way_hs_fail == ssid) {
6869                 u8 go_dev_addr[ETH_ALEN];
6870                 struct wpa_ssid *persistent;
6871
6872                 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
6873                                               ssid->ssid,
6874                                               ssid->ssid_len) <= 0) {
6875                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
6876                         goto disconnect;
6877                 }
6878
6879                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
6880                         MACSTR, MAC2STR(go_dev_addr));
6881                 persistent = wpas_p2p_get_persistent(wpa_s->parent, go_dev_addr,
6882                                                      ssid->ssid,
6883                                                      ssid->ssid_len);
6884                 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
6885                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
6886                         goto disconnect;
6887                 }
6888                 wpa_msg_global(wpa_s->parent, MSG_INFO,
6889                                P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
6890                                persistent->id);
6891         disconnect:
6892                 wpa_s->p2p_last_4way_hs_fail = NULL;
6893                 /*
6894                  * Remove the group from a timeout to avoid issues with caller
6895                  * continuing to use the interface if this is on a P2P group
6896                  * interface.
6897                  */
6898                 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
6899                                        wpa_s, NULL);
6900                 return 1;
6901         }
6902
6903         wpa_s->p2p_last_4way_hs_fail = ssid;
6904         return 0;
6905 }