SME: Fix a sign-compare warning

[thirdparty/hostap.git] / wpa_supplicant / p2p_supplicant.c

/*
 * wpa_supplicant - P2P
 * Copyright (c) 2009-2010, Atheros Communications
 * Copyright (c) 2010-2014, Jouni Malinen <j@w1.fi>
 *
 * This software may be distributed under the terms of the BSD license.
 * See README for more details.
 */

#include "includes.h"

#include "common.h"
#include "eloop.h"
#include "common/ieee802_11_common.h"
#include "common/ieee802_11_defs.h"
#include "common/wpa_ctrl.h"
#include "wps/wps_i.h"
#include "p2p/p2p.h"
#include "ap/hostapd.h"
#include "ap/ap_config.h"
#include "ap/sta_info.h"
#include "ap/ap_drv_ops.h"
#include "ap/wps_hostapd.h"
#include "ap/p2p_hostapd.h"
#include "eapol_supp/eapol_supp_sm.h"
#include "rsn_supp/wpa.h"
#include "wpa_supplicant_i.h"
#include "driver_i.h"
#include "ap.h"
#include "config_ssid.h"
#include "config.h"
#include "notify.h"
#include "scan.h"
#include "bss.h"
#include "offchannel.h"
#include "wps_supplicant.h"
#include "p2p_supplicant.h"
#include "wifi_display.h"


/*
 * How many times to try to scan to find the GO before giving up on join
 * request.
 */
#define P2P_MAX_JOIN_SCAN_ATTEMPTS 10

#define P2P_AUTO_PD_SCAN_ATTEMPTS 5

#ifndef P2P_MAX_CLIENT_IDLE
/*
 * How many seconds to try to reconnect to the GO when connection in P2P client
 * role has been lost.
 */
#define P2P_MAX_CLIENT_IDLE 10
#endif /* P2P_MAX_CLIENT_IDLE */

#ifndef P2P_MAX_INITIAL_CONN_WAIT
/*
 * How many seconds to wait for initial 4-way handshake to get completed after
 * WPS provisioning step or after the re-invocation of a persistent group on a
 * P2P Client.
 */
#define P2P_MAX_INITIAL_CONN_WAIT 10
#endif /* P2P_MAX_INITIAL_CONN_WAIT */

#ifndef P2P_MAX_INITIAL_CONN_WAIT_GO
/*
 * How many seconds to wait for initial 4-way handshake to get completed after
 * WPS provisioning step on the GO. This controls the extra time the P2P
 * operation is considered to be in progress (e.g., to delay other scans) after
 * WPS provisioning has been completed on the GO during group formation.
 */
#define P2P_MAX_INITIAL_CONN_WAIT_GO 10
#endif /* P2P_MAX_INITIAL_CONN_WAIT_GO */

#ifndef P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE
/*
 * How many seconds to wait for initial 4-way handshake to get completed after
 * re-invocation of a persistent group on the GO when the client is expected
 * to connect automatically (no user interaction).
 */
#define P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 15
#endif /* P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE */

#define P2P_MGMT_DEVICE_PREFIX          "p2p-dev-"

enum p2p_group_removal_reason {
        P2P_GROUP_REMOVAL_UNKNOWN,
        P2P_GROUP_REMOVAL_SILENT,
        P2P_GROUP_REMOVAL_FORMATION_FAILED,
        P2P_GROUP_REMOVAL_REQUESTED,
        P2P_GROUP_REMOVAL_IDLE_TIMEOUT,
        P2P_GROUP_REMOVAL_UNAVAILABLE,
        P2P_GROUP_REMOVAL_GO_ENDING_SESSION,
        P2P_GROUP_REMOVAL_PSK_FAILURE,
        P2P_GROUP_REMOVAL_FREQ_CONFLICT
};


static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
static struct wpa_supplicant *
wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
                         int go);
static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
                               const u8 *ssid, size_t ssid_len);
static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
                                   const u8 *ssid, size_t ssid_len);
static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
                         const u8 *dev_addr, enum p2p_wps_method wps_method,
                         int auto_join, int freq,
                         const u8 *ssid, size_t ssid_len);
static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
                                             void *timeout_ctx);
static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx);
static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
                                        int group_added);
static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s);
static void wpas_stop_listen(void *ctx);
static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx);
static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s);


/*
 * Get the number of concurrent channels that the HW can operate, but that are
 * currently not in use by any of the wpa_supplicant interfaces.
 */
static int wpas_p2p_num_unused_channels(struct wpa_supplicant *wpa_s)
{
        int *freqs;
        int num, unused;

        freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
        if (!freqs)
                return -1;

        num = get_shared_radio_freqs(wpa_s, freqs,
                                     wpa_s->num_multichan_concurrent);
        os_free(freqs);

        unused = wpa_s->num_multichan_concurrent - num;
        wpa_dbg(wpa_s, MSG_DEBUG, "P2P: num_unused_channels: %d", unused);
        return unused;
}


/*
 * Get the frequencies that are currently in use by one or more of the virtual
 * interfaces, and that are also valid for P2P operation.
 */
static unsigned int
wpas_p2p_valid_oper_freqs(struct wpa_supplicant *wpa_s,
                          struct wpa_used_freq_data *p2p_freqs,
                          unsigned int len)
{
        struct wpa_used_freq_data *freqs;
        unsigned int num, i, j;

        freqs = os_calloc(wpa_s->num_multichan_concurrent,
                          sizeof(struct wpa_used_freq_data));
        if (!freqs)
                return 0;

        num = get_shared_radio_freqs_data(wpa_s, freqs,
                                          wpa_s->num_multichan_concurrent);

        os_memset(p2p_freqs, 0, sizeof(struct wpa_used_freq_data) * len);

        for (i = 0, j = 0; i < num && j < len; i++) {
                if (p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
                        p2p_freqs[j++] = freqs[i];
        }

        os_free(freqs);

        dump_freq_data(wpa_s, "valid for P2P", p2p_freqs, j);

        return j;
}


static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s,
                                             int freq)
{
        if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
                return;
        if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
            freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
            wpas_p2p_num_unused_channels(wpa_s) > 0) {
                wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz due to p2p_ignore_shared_freq=1 configuration",
                           freq);
                freq = 0;
        }
        p2p_set_own_freq_preference(wpa_s->global->p2p, freq);
}


static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
                                      struct wpa_scan_results *scan_res)
{
        size_t i;

        if (wpa_s->p2p_scan_work) {
                struct wpa_radio_work *work = wpa_s->p2p_scan_work;
                wpa_s->p2p_scan_work = NULL;
                radio_work_done(work);
        }

        if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
                return;

        wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
                   (int) scan_res->num);

        for (i = 0; i < scan_res->num; i++) {
                struct wpa_scan_res *bss = scan_res->res[i];
                struct os_reltime time_tmp_age, entry_ts;
                const u8 *ies;
                size_t ies_len;

                time_tmp_age.sec = bss->age / 1000;
                time_tmp_age.usec = (bss->age % 1000) * 1000;
                os_reltime_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts);

                ies = (const u8 *) (bss + 1);
                ies_len = bss->ie_len;
                if (bss->beacon_ie_len > 0 &&
                    !wpa_scan_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
                    wpa_scan_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
                        wpa_printf(MSG_DEBUG, "P2P: Use P2P IE(s) from Beacon frame since no P2P IE(s) in Probe Response frames received for "
                                   MACSTR, MAC2STR(bss->bssid));
                        ies = ies + ies_len;
                        ies_len = bss->beacon_ie_len;
                }


                if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
                                         bss->freq, &entry_ts, bss->level,
                                         ies, ies_len) > 0)
                        break;
        }

        p2p_scan_res_handled(wpa_s->global->p2p);
}


static void wpas_p2p_trigger_scan_cb(struct wpa_radio_work *work, int deinit)
{
        struct wpa_supplicant *wpa_s = work->wpa_s;
        struct wpa_driver_scan_params *params = work->ctx;
        int ret;

        if (deinit) {
                if (!work->started) {
                        wpa_scan_free_params(params);
                        return;
                }

                wpa_s->p2p_scan_work = NULL;
                return;
        }

        ret = wpa_drv_scan(wpa_s, params);
        wpa_scan_free_params(params);
        work->ctx = NULL;
        if (ret) {
                radio_work_done(work);
                p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
                return;
        }

        p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
        os_get_reltime(&wpa_s->scan_trigger_time);
        wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
        wpa_s->own_scan_requested = 1;
        wpa_s->p2p_scan_work = work;
}


static int wpas_p2p_search_social_channel(struct wpa_supplicant *wpa_s,
                                          int freq)
{
        if (wpa_s->global->p2p_24ghz_social_channels &&
            (freq == 2412 || freq == 2437 || freq == 2462)) {
                /*
                 * Search all social channels regardless of whether these have
                 * been disabled for P2P operating channel use to avoid missing
                 * peers.
                 */
                return 1;
        }
        return p2p_supported_freq(wpa_s->global->p2p, freq);
}


static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
                         unsigned int num_req_dev_types,
                         const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
{
        struct wpa_supplicant *wpa_s = ctx;
        struct wpa_driver_scan_params *params = NULL;
        struct wpabuf *wps_ie, *ies;
        unsigned int num_channels = 0;
        int social_channels_freq[] = { 2412, 2437, 2462, 60480 };
        size_t ielen;
        u8 *n, i;

        if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
                return -1;

        if (wpa_s->p2p_scan_work) {
                wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending");
                return -1;
        }

        params = os_zalloc(sizeof(*params));
        if (params == NULL)
                return -1;

        /* P2P Wildcard SSID */
        params->num_ssids = 1;
        n = os_malloc(P2P_WILDCARD_SSID_LEN);
        if (n == NULL)
                goto fail;
        os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
        params->ssids[0].ssid = n;
        params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;

        wpa_s->wps->dev.p2p = 1;
        wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
                                        wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
                                        num_req_dev_types, req_dev_types);
        if (wps_ie == NULL)
                goto fail;

        ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
        ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
        if (ies == NULL) {
                wpabuf_free(wps_ie);
                goto fail;
        }
        wpabuf_put_buf(ies, wps_ie);
        wpabuf_free(wps_ie);

        p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);

        params->p2p_probe = 1;
        n = os_malloc(wpabuf_len(ies));
        if (n == NULL) {
                wpabuf_free(ies);
                goto fail;
        }
        os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies));
        params->extra_ies = n;
        params->extra_ies_len = wpabuf_len(ies);
        wpabuf_free(ies);

        switch (type) {
        case P2P_SCAN_SOCIAL:
                params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 1,
                                          sizeof(int));
                if (params->freqs == NULL)
                        goto fail;
                for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
                        if (wpas_p2p_search_social_channel(
                                    wpa_s, social_channels_freq[i]))
                                params->freqs[num_channels++] =
                                        social_channels_freq[i];
                }
                params->freqs[num_channels++] = 0;
                break;
        case P2P_SCAN_FULL:
                break;
        case P2P_SCAN_SOCIAL_PLUS_ONE:
                params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 2,
                                          sizeof(int));
                if (params->freqs == NULL)
                        goto fail;
                for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
                        if (wpas_p2p_search_social_channel(
                                    wpa_s, social_channels_freq[i]))
                                params->freqs[num_channels++] =
                                        social_channels_freq[i];
                }
                if (p2p_supported_freq(wpa_s->global->p2p, freq))
                        params->freqs[num_channels++] = freq;
                params->freqs[num_channels++] = 0;
                break;
        }

        radio_remove_works(wpa_s, "p2p-scan", 0);
        if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb,
                           params) < 0)
                goto fail;
        return 0;

fail:
        wpa_scan_free_params(params);
        return -1;
}


static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
{
        switch (p2p_group_interface) {
        case P2P_GROUP_INTERFACE_PENDING:
                return WPA_IF_P2P_GROUP;
        case P2P_GROUP_INTERFACE_GO:
                return WPA_IF_P2P_GO;
        case P2P_GROUP_INTERFACE_CLIENT:
                return WPA_IF_P2P_CLIENT;
        }

        return WPA_IF_P2P_GROUP;
}


static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
                                                  const u8 *ssid,
                                                  size_t ssid_len, int *go)
{
        struct wpa_ssid *s;

        for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
                for (s = wpa_s->conf->ssid; s; s = s->next) {
                        if (s->disabled != 0 || !s->p2p_group ||
                            s->ssid_len != ssid_len ||
                            os_memcmp(ssid, s->ssid, ssid_len) != 0)
                                continue;
                        if (s->mode == WPAS_MODE_P2P_GO &&
                            s != wpa_s->current_ssid)
                                continue;
                        if (go)
                                *go = s->mode == WPAS_MODE_P2P_GO;
                        return wpa_s;
                }
        }

        return NULL;
}


static void run_wpas_p2p_disconnect(void *eloop_ctx, void *timeout_ctx)
{
        struct wpa_supplicant *wpa_s = eloop_ctx;
        wpa_printf(MSG_DEBUG,
                   "P2P: Complete previously requested removal of %s",
                   wpa_s->ifname);
        wpas_p2p_disconnect(wpa_s);
}


static int wpas_p2p_disconnect_safely(struct wpa_supplicant *wpa_s,
                                      struct wpa_supplicant *calling_wpa_s)
{
        if (calling_wpa_s == wpa_s && wpa_s &&
            wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
                /*
                 * The calling wpa_s instance is going to be removed. Do that
                 * from an eloop callback to keep the instance available until
                 * the caller has returned. This my be needed, e.g., to provide
                 * control interface responses on the per-interface socket.
                 */
                if (eloop_register_timeout(0, 0, run_wpas_p2p_disconnect,
                                           wpa_s, NULL) < 0)
                        return -1;
                return 0;
        }

        return wpas_p2p_disconnect(wpa_s);
}


static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
                                 enum p2p_group_removal_reason removal_reason)
{
        struct wpa_ssid *ssid;
        char *gtype;
        const char *reason;

        ssid = wpa_s->current_ssid;
        if (ssid == NULL) {
                /*
                 * The current SSID was not known, but there may still be a
                 * pending P2P group interface waiting for provisioning or a
                 * P2P group that is trying to reconnect.
                 */
                ssid = wpa_s->conf->ssid;
                while (ssid) {
                        if (ssid->p2p_group && ssid->disabled != 2)
                                break;
                        ssid = ssid->next;
                }
                if (ssid == NULL &&
                        wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
                {
                        wpa_printf(MSG_ERROR, "P2P: P2P group interface "
                                   "not found");
                        return -1;
                }
        }
        if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
                gtype = "GO";
        else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
                 (ssid && ssid->mode == WPAS_MODE_INFRA)) {
                wpa_s->reassociate = 0;
                wpa_s->disconnected = 1;
                gtype = "client";
        } else
                gtype = "GO";

        if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
                wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);

        if (os_strcmp(gtype, "client") == 0) {
                wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
                if (eloop_is_timeout_registered(wpas_p2p_psk_failure_removal,
                                                wpa_s, NULL)) {
                        wpa_printf(MSG_DEBUG,
                                   "P2P: PSK failure removal was scheduled, so use PSK failure as reason for group removal");
                        removal_reason = P2P_GROUP_REMOVAL_PSK_FAILURE;
                        eloop_cancel_timeout(wpas_p2p_psk_failure_removal,
                                             wpa_s, NULL);
                }
        }

        if (wpa_s->cross_connect_in_use) {
                wpa_s->cross_connect_in_use = 0;
                wpa_msg_global(wpa_s->parent, MSG_INFO,
                               P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
                               wpa_s->ifname, wpa_s->cross_connect_uplink);
        }
        switch (removal_reason) {
        case P2P_GROUP_REMOVAL_REQUESTED:
                reason = " reason=REQUESTED";
                break;
        case P2P_GROUP_REMOVAL_FORMATION_FAILED:
                reason = " reason=FORMATION_FAILED";
                break;
        case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
                reason = " reason=IDLE";
                break;
        case P2P_GROUP_REMOVAL_UNAVAILABLE:
                reason = " reason=UNAVAILABLE";
                break;
        case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
                reason = " reason=GO_ENDING_SESSION";
                break;
        case P2P_GROUP_REMOVAL_PSK_FAILURE:
                reason = " reason=PSK_FAILURE";
                break;
        case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
                reason = " reason=FREQ_CONFLICT";
                break;
        default:
                reason = "";
                break;
        }
        if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
                wpa_msg_global(wpa_s->parent, MSG_INFO,
                               P2P_EVENT_GROUP_REMOVED "%s %s%s",
                               wpa_s->ifname, gtype, reason);
        }

        if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0)
                wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout");
        if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
                wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
        if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
                                 wpa_s->parent, NULL) > 0) {
                wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
                           "timeout");
                wpa_s->p2p_in_provisioning = 0;
        }

        wpa_s->p2p_in_invitation = 0;

        /*
         * Make sure wait for the first client does not remain active after the
         * group has been removed.
         */
        wpa_s->global->p2p_go_wait_client.sec = 0;

        if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
                struct wpa_global *global;
                char *ifname;
                enum wpa_driver_if_type type;
                wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
                        wpa_s->ifname);
                global = wpa_s->global;
                ifname = os_strdup(wpa_s->ifname);
                type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
                eloop_cancel_timeout(run_wpas_p2p_disconnect, wpa_s, NULL);
                wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
                wpa_s = global->ifaces;
                if (wpa_s && ifname)
                        wpa_drv_if_remove(wpa_s, type, ifname);
                os_free(ifname);
                return 1;
        }

        if (!wpa_s->p2p_go_group_formation_completed) {
                wpa_s->global->p2p_group_formation = NULL;
                wpa_s->p2p_in_provisioning = 0;
        }

        wpa_s->show_group_started = 0;
        os_free(wpa_s->go_params);
        wpa_s->go_params = NULL;

        os_free(wpa_s->p2p_group_common_freqs);
        wpa_s->p2p_group_common_freqs = NULL;
        wpa_s->p2p_group_common_freqs_num = 0;

        wpa_s->waiting_presence_resp = 0;

        wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
        if (ssid && (ssid->p2p_group ||
                     ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
                     (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
                int id = ssid->id;
                if (ssid == wpa_s->current_ssid) {
                        wpa_sm_set_config(wpa_s->wpa, NULL);
                        eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
                        wpa_s->current_ssid = NULL;
                }
                /*
                 * Networks objects created during any P2P activities are not
                 * exposed out as they might/will confuse certain non-P2P aware
                 * applications since these network objects won't behave like
                 * regular ones.
                 *
                 * Likewise, we don't send out network removed signals for such
                 * network objects.
                 */
                wpa_config_remove_network(wpa_s->conf, id);
                wpa_supplicant_clear_status(wpa_s);
                wpa_supplicant_cancel_sched_scan(wpa_s);
        } else {
                wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
                           "found");
        }
        if (wpa_s->ap_iface)
                wpa_supplicant_ap_deinit(wpa_s);
        else
                wpa_drv_deinit_p2p_cli(wpa_s);

        return 0;
}


static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
                                     u8 *go_dev_addr,
                                     const u8 *ssid, size_t ssid_len)
{
        struct wpa_bss *bss;
        const u8 *bssid;
        struct wpabuf *p2p;
        u8 group_capab;
        const u8 *addr;

        if (wpa_s->go_params)
                bssid = wpa_s->go_params->peer_interface_addr;
        else
                bssid = wpa_s->bssid;

        bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
        if (bss == NULL && wpa_s->go_params &&
            !is_zero_ether_addr(wpa_s->go_params->peer_device_addr))
                bss = wpa_bss_get_p2p_dev_addr(
                        wpa_s, wpa_s->go_params->peer_device_addr);
        if (bss == NULL) {
                u8 iface_addr[ETH_ALEN];
                if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
                                           iface_addr) == 0)
                        bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
        }
        if (bss == NULL) {
                wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
                           "group is persistent - BSS " MACSTR " not found",
                           MAC2STR(bssid));
                return 0;
        }

        p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
        if (p2p == NULL)
                p2p = wpa_bss_get_vendor_ie_multi_beacon(bss,
                                                         P2P_IE_VENDOR_TYPE);
        if (p2p == NULL) {
                wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
                           "group is persistent - BSS " MACSTR
                           " did not include P2P IE", MAC2STR(bssid));
                wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
                            (u8 *) (bss + 1), bss->ie_len);
                wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
                            ((u8 *) bss + 1) + bss->ie_len,
                            bss->beacon_ie_len);
                return 0;
        }

        group_capab = p2p_get_group_capab(p2p);
        addr = p2p_get_go_dev_addr(p2p);
        wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
                   "group_capab=0x%x", group_capab);
        if (addr) {
                os_memcpy(go_dev_addr, addr, ETH_ALEN);
                wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
                           MAC2STR(addr));
        } else
                os_memset(go_dev_addr, 0, ETH_ALEN);
        wpabuf_free(p2p);

        wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
                   "go_dev_addr=" MACSTR,
                   MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));

        return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
}


static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
                                           struct wpa_ssid *ssid,
                                           const u8 *go_dev_addr)
{
        struct wpa_ssid *s;
        int changed = 0;

        wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
                   "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
        for (s = wpa_s->conf->ssid; s; s = s->next) {
                if (s->disabled == 2 &&
                    os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
                    s->ssid_len == ssid->ssid_len &&
                    os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
                        break;
        }

        if (s) {
                wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
                           "entry");
                if (ssid->passphrase && !s->passphrase)
                        changed = 1;
                else if (ssid->passphrase && s->passphrase &&
                         os_strcmp(ssid->passphrase, s->passphrase) != 0)
                        changed = 1;
        } else {
                wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
                           "entry");
                changed = 1;
                s = wpa_config_add_network(wpa_s->conf);
                if (s == NULL)
                        return -1;

                /*
                 * Instead of network_added we emit persistent_group_added
                 * notification. Also to keep the defense checks in
                 * persistent_group obj registration method, we set the
                 * relevant flags in s to designate it as a persistent group.
                 */
                s->p2p_group = 1;
                s->p2p_persistent_group = 1;
                wpas_notify_persistent_group_added(wpa_s, s);
                wpa_config_set_network_defaults(s);
        }

        s->p2p_group = 1;
        s->p2p_persistent_group = 1;
        s->disabled = 2;
        s->bssid_set = 1;
        os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
        s->mode = ssid->mode;
        s->auth_alg = WPA_AUTH_ALG_OPEN;
        s->key_mgmt = WPA_KEY_MGMT_PSK;
        s->proto = WPA_PROTO_RSN;
        s->pairwise_cipher = WPA_CIPHER_CCMP;
        s->export_keys = 1;
        if (ssid->passphrase) {
                os_free(s->passphrase);
                s->passphrase = os_strdup(ssid->passphrase);
        }
        if (ssid->psk_set) {
                s->psk_set = 1;
                os_memcpy(s->psk, ssid->psk, 32);
        }
        if (s->passphrase && !s->psk_set)
                wpa_config_update_psk(s);
        if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
                os_free(s->ssid);
                s->ssid = os_malloc(ssid->ssid_len);
        }
        if (s->ssid) {
                s->ssid_len = ssid->ssid_len;
                os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
        }
        if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
                dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
                wpa_s->global->add_psk = NULL;
                changed = 1;
        }

        if (changed && wpa_s->conf->update_config &&
            wpa_config_write(wpa_s->confname, wpa_s->conf)) {
                wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
        }

        return s->id;
}


static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
                                                 const u8 *addr)
{
        struct wpa_ssid *ssid, *s;
        u8 *n;
        size_t i;
        int found = 0;

        ssid = wpa_s->current_ssid;
        if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
            !ssid->p2p_persistent_group)
                return;

        for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
                if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
                        continue;

                if (s->ssid_len == ssid->ssid_len &&
                    os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
                        break;
        }

        if (s == NULL)
                return;

        for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
                if (os_memcmp(s->p2p_client_list + i * ETH_ALEN, addr,
                              ETH_ALEN) != 0)
                        continue;

                if (i == s->num_p2p_clients - 1)
                        return; /* already the most recent entry */

                /* move the entry to mark it most recent */
                os_memmove(s->p2p_client_list + i * ETH_ALEN,
                           s->p2p_client_list + (i + 1) * ETH_ALEN,
                           (s->num_p2p_clients - i - 1) * ETH_ALEN);
                os_memcpy(s->p2p_client_list +
                          (s->num_p2p_clients - 1) * ETH_ALEN, addr, ETH_ALEN);
                found = 1;
                break;
        }

        if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
                n = os_realloc_array(s->p2p_client_list,
                                     s->num_p2p_clients + 1, ETH_ALEN);
                if (n == NULL)
                        return;
                os_memcpy(n + s->num_p2p_clients * ETH_ALEN, addr, ETH_ALEN);
                s->p2p_client_list = n;
                s->num_p2p_clients++;
        } else if (!found && s->p2p_client_list) {
                /* Not enough room for an additional entry - drop the oldest
                 * entry */
                os_memmove(s->p2p_client_list,
                           s->p2p_client_list + ETH_ALEN,
                           (s->num_p2p_clients - 1) * ETH_ALEN);
                os_memcpy(s->p2p_client_list +
                          (s->num_p2p_clients - 1) * ETH_ALEN,
                          addr, ETH_ALEN);
        }

        if (wpa_s->parent->conf->update_config &&
            wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
                wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
}


static void wpas_p2p_group_started(struct wpa_supplicant *wpa_s,
                                   int go, struct wpa_ssid *ssid, int freq,
                                   const u8 *psk, const char *passphrase,
                                   const u8 *go_dev_addr, int persistent,
                                   const char *extra)
{
        const char *ssid_txt;
        char psk_txt[65];

        if (psk)
                wpa_snprintf_hex(psk_txt, sizeof(psk_txt), psk, 32);
        else
                psk_txt[0] = '\0';

        if (ssid)
                ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
        else
                ssid_txt = "";

        if (passphrase && passphrase[0] == '\0')
                passphrase = NULL;

        /*
         * Include PSK/passphrase only in the control interface message and
         * leave it out from the debug log entry.
         */
        wpa_msg_global_ctrl(wpa_s->parent, MSG_INFO,
                            P2P_EVENT_GROUP_STARTED
                            "%s %s ssid=\"%s\" freq=%d%s%s%s%s%s go_dev_addr="
                            MACSTR "%s%s",
                            wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
                            psk ? " psk=" : "", psk_txt,
                            passphrase ? " passphrase=\"" : "",
                            passphrase ? passphrase : "",
                            passphrase ? "\"" : "",
                            MAC2STR(go_dev_addr),
                            persistent ? " [PERSISTENT]" : "", extra);
        wpa_printf(MSG_INFO, P2P_EVENT_GROUP_STARTED
                   "%s %s ssid=\"%s\" freq=%d go_dev_addr=" MACSTR "%s%s",
                   wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
                   MAC2STR(go_dev_addr), persistent ? " [PERSISTENT]" : "",
                   extra);
}


static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
                                           int success)
{
        struct wpa_ssid *ssid;
        int client;
        int persistent;
        u8 go_dev_addr[ETH_ALEN];
        int network_id = -1;

        /*
         * This callback is likely called for the main interface. Update wpa_s
         * to use the group interface if a new interface was created for the
         * group.
         */
        if (wpa_s->global->p2p_group_formation)
                wpa_s = wpa_s->global->p2p_group_formation;
        if (wpa_s->p2p_go_group_formation_completed) {
                wpa_s->global->p2p_group_formation = NULL;
                wpa_s->p2p_in_provisioning = 0;
        }
        wpa_s->p2p_in_invitation = 0;
        wpa_s->group_formation_reported = 1;

        if (!success) {
                wpa_msg_global(wpa_s->parent, MSG_INFO,
                               P2P_EVENT_GROUP_FORMATION_FAILURE);
                wpas_p2p_group_delete(wpa_s,
                                      P2P_GROUP_REMOVAL_FORMATION_FAILED);
                return;
        }

        wpa_msg_global(wpa_s->parent, MSG_INFO,
                       P2P_EVENT_GROUP_FORMATION_SUCCESS);

        ssid = wpa_s->current_ssid;
        if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
                ssid->mode = WPAS_MODE_P2P_GO;
                p2p_group_notif_formation_done(wpa_s->p2p_group);
                wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
        }

        persistent = 0;
        if (ssid) {
                client = ssid->mode == WPAS_MODE_INFRA;
                if (ssid->mode == WPAS_MODE_P2P_GO) {
                        persistent = ssid->p2p_persistent_group;
                        os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
                                  ETH_ALEN);
                } else
                        persistent = wpas_p2p_persistent_group(wpa_s,
                                                               go_dev_addr,
                                                               ssid->ssid,
                                                               ssid->ssid_len);
        } else {
                client = wpa_s->p2p_group_interface ==
                        P2P_GROUP_INTERFACE_CLIENT;
                os_memset(go_dev_addr, 0, ETH_ALEN);
        }

        wpa_s->show_group_started = 0;
        if (client) {
                /*
                 * Indicate event only after successfully completed 4-way
                 * handshake, i.e., when the interface is ready for data
                 * packets.
                 */
                wpa_s->show_group_started = 1;
        } else {
                wpas_p2p_group_started(wpa_s, 1, ssid,
                                       ssid ? ssid->frequency : 0,
                                       ssid && ssid->passphrase == NULL &&
                                       ssid->psk_set ? ssid->psk : NULL,
                                       ssid ? ssid->passphrase : NULL,
                                       go_dev_addr, persistent, "");
                wpas_p2p_cross_connect_setup(wpa_s);
                wpas_p2p_set_group_idle_timeout(wpa_s);
        }

        if (persistent)
                network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
                                                             ssid, go_dev_addr);
        else {
                os_free(wpa_s->global->add_psk);
                wpa_s->global->add_psk = NULL;
        }
        if (network_id < 0 && ssid)
                network_id = ssid->id;
        if (!client) {
                wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
                os_get_reltime(&wpa_s->global->p2p_go_wait_client);
        }
}


struct send_action_work {
        unsigned int freq;
        u8 dst[ETH_ALEN];
        u8 src[ETH_ALEN];
        u8 bssid[ETH_ALEN];
        size_t len;
        unsigned int wait_time;
        u8 buf[0];
};


static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
                                              void *timeout_ctx)
{
        struct wpa_supplicant *wpa_s = eloop_ctx;

        if (!wpa_s->p2p_send_action_work)
                return;

        wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
        os_free(wpa_s->p2p_send_action_work->ctx);
        radio_work_done(wpa_s->p2p_send_action_work);
        wpa_s->p2p_send_action_work = NULL;
}


static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s)
{
        if (wpa_s->p2p_send_action_work) {
                struct send_action_work *awork;
                awork = wpa_s->p2p_send_action_work->ctx;
                if (awork->wait_time == 0) {
                        os_free(awork);
                        radio_work_done(wpa_s->p2p_send_action_work);
                        wpa_s->p2p_send_action_work = NULL;
                } else {
                        /*
                         * In theory, this should not be needed, but number of
                         * places in the P2P code is still using non-zero wait
                         * time for the last Action frame in the sequence and
                         * some of these do not call send_action_done().
                         */
                        eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
                                             wpa_s, NULL);
                        eloop_register_timeout(
                                0, awork->wait_time * 1000,
                                wpas_p2p_send_action_work_timeout,
                                wpa_s, NULL);
                }
        }
}


static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
                                           unsigned int freq,
                                           const u8 *dst, const u8 *src,
                                           const u8 *bssid,
                                           const u8 *data, size_t data_len,
                                           enum offchannel_send_action_result
                                           result)
{
        enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;

        wpas_p2p_action_tx_clear(wpa_s);

        if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
                return;

        switch (result) {
        case OFFCHANNEL_SEND_ACTION_SUCCESS:
                res = P2P_SEND_ACTION_SUCCESS;
                break;
        case OFFCHANNEL_SEND_ACTION_NO_ACK:
                res = P2P_SEND_ACTION_NO_ACK;
                break;
        case OFFCHANNEL_SEND_ACTION_FAILED:
                res = P2P_SEND_ACTION_FAILED;
                break;
        }

        p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);

        if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
            wpa_s->pending_pd_before_join &&
            (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
             os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
            wpa_s->p2p_fallback_to_go_neg) {
                wpa_s->pending_pd_before_join = 0;
                wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
                        "during p2p_connect-auto");
                wpas_p2p_fallback_to_go_neg(wpa_s, 0);
                return;
        }
}


static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
{
        struct wpa_supplicant *wpa_s = work->wpa_s;
        struct send_action_work *awork = work->ctx;

        if (deinit) {
                if (work->started) {
                        eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
                                             wpa_s, NULL);
                        wpa_s->p2p_send_action_work = NULL;
                        offchannel_send_action_done(wpa_s);
                }
                os_free(awork);
                return;
        }

        if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
                                   awork->bssid, awork->buf, awork->len,
                                   awork->wait_time,
                                   wpas_p2p_send_action_tx_status, 1) < 0) {
                os_free(awork);
                radio_work_done(work);
                return;
        }
        wpa_s->p2p_send_action_work = work;
}


static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
                                 unsigned int freq, const u8 *dst,
                                 const u8 *src, const u8 *bssid, const u8 *buf,
                                 size_t len, unsigned int wait_time)
{
        struct send_action_work *awork;

        if (wpa_s->p2p_send_action_work) {
                wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
                return -1;
        }

        awork = os_zalloc(sizeof(*awork) + len);
        if (awork == NULL)
                return -1;

        awork->freq = freq;
        os_memcpy(awork->dst, dst, ETH_ALEN);
        os_memcpy(awork->src, src, ETH_ALEN);
        os_memcpy(awork->bssid, bssid, ETH_ALEN);
        awork->len = len;
        awork->wait_time = wait_time;
        os_memcpy(awork->buf, buf, len);

        if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
                           wpas_send_action_cb, awork) < 0) {
                os_free(awork);
                return -1;
        }

        return 0;
}


static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
                            const u8 *src, const u8 *bssid, const u8 *buf,
                            size_t len, unsigned int wait_time)
{
        struct wpa_supplicant *wpa_s = ctx;
        int listen_freq = -1, send_freq = -1;

        if (wpa_s->p2p_listen_work)
                listen_freq = wpa_s->p2p_listen_work->freq;
        if (wpa_s->p2p_send_action_work)
                send_freq = wpa_s->p2p_send_action_work->freq;
        if (listen_freq != (int) freq && send_freq != (int) freq) {
                wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)",
                           listen_freq, send_freq);
                return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
                                             len, wait_time);
        }

        wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
        return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
                                      wait_time,
                                      wpas_p2p_send_action_tx_status, 1);
}


static void wpas_send_action_done(void *ctx)
{
        struct wpa_supplicant *wpa_s = ctx;

        if (wpa_s->p2p_send_action_work) {
                eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
                                     wpa_s, NULL);
                os_free(wpa_s->p2p_send_action_work->ctx);
                radio_work_done(wpa_s->p2p_send_action_work);
                wpa_s->p2p_send_action_work = NULL;
        }

        offchannel_send_action_done(wpa_s);
}


static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
                                    struct p2p_go_neg_results *params)
{
        if (wpa_s->go_params == NULL) {
                wpa_s->go_params = os_malloc(sizeof(*params));
                if (wpa_s->go_params == NULL)
                        return -1;
        }
        os_memcpy(wpa_s->go_params, params, sizeof(*params));
        return 0;
}


static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
                                    struct p2p_go_neg_results *res)
{
        wpa_s->group_formation_reported = 0;
        wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
                   " dev_addr " MACSTR " wps_method %d",
                   MAC2STR(res->peer_interface_addr),
                   MAC2STR(res->peer_device_addr), res->wps_method);
        wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
                          res->ssid, res->ssid_len);
        wpa_supplicant_ap_deinit(wpa_s);
        wpas_copy_go_neg_results(wpa_s, res);
        if (res->wps_method == WPS_PBC) {
                wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
#ifdef CONFIG_WPS_NFC
        } else if (res->wps_method == WPS_NFC) {
                wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
                                   res->peer_interface_addr,
                                   wpa_s->parent->p2p_oob_dev_pw,
                                   wpa_s->parent->p2p_oob_dev_pw_id, 1,
                                   wpa_s->parent->p2p_oob_dev_pw_id ==
                                   DEV_PW_NFC_CONNECTION_HANDOVER ?
                                   wpa_s->parent->p2p_peer_oob_pubkey_hash :
                                   NULL,
                                   NULL, 0, 0);
#endif /* CONFIG_WPS_NFC */
        } else {
                u16 dev_pw_id = DEV_PW_DEFAULT;
                if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
                        dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
                wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
                                   wpa_s->p2p_pin, 1, dev_pw_id);
        }
}


static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
                                  struct wpa_ssid *ssid)
{
        struct wpa_ssid *persistent;
        struct psk_list_entry *psk;
        struct hostapd_data *hapd;

        if (!wpa_s->ap_iface)
                return;

        persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
                                             ssid->ssid_len);
        if (persistent == NULL)
                return;

        hapd = wpa_s->ap_iface->bss[0];

        dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
                         list) {
                struct hostapd_wpa_psk *hpsk;

                wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
                        MACSTR " psk=%d",
                        MAC2STR(psk->addr), psk->p2p);
                hpsk = os_zalloc(sizeof(*hpsk));
                if (hpsk == NULL)
                        break;
                os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
                if (psk->p2p)
                        os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
                else
                        os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
                hpsk->next = hapd->conf->ssid.wpa_psk;
                hapd->conf->ssid.wpa_psk = hpsk;
        }
}


static void p2p_go_dump_common_freqs(struct wpa_supplicant *wpa_s)
{
        unsigned int i;

        wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Common group frequencies (len=%u):",
                wpa_s->p2p_group_common_freqs_num);

        for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++)
                wpa_dbg(wpa_s, MSG_DEBUG, "freq[%u]: %d",
                        i, wpa_s->p2p_group_common_freqs[i]);
}


static void p2p_go_save_group_common_freqs(struct wpa_supplicant *wpa_s,
                                           struct p2p_go_neg_results *params)
{
        unsigned int i, len = int_array_len(wpa_s->go_params->freq_list);

        wpa_s->p2p_group_common_freqs_num = 0;
        os_free(wpa_s->p2p_group_common_freqs);
        wpa_s->p2p_group_common_freqs = os_calloc(len, sizeof(int));
        if (!wpa_s->p2p_group_common_freqs)
                return;

        for (i = 0; i < len; i++) {
                if (!wpa_s->go_params->freq_list[i])
                        break;
                wpa_s->p2p_group_common_freqs[i] =
                        wpa_s->go_params->freq_list[i];
        }
        wpa_s->p2p_group_common_freqs_num = i;
}


static void p2p_go_configured(void *ctx, void *data)
{
        struct wpa_supplicant *wpa_s = ctx;
        struct p2p_go_neg_results *params = data;
        struct wpa_ssid *ssid;
        int network_id = -1;

        p2p_go_save_group_common_freqs(wpa_s, params);
        p2p_go_dump_common_freqs(wpa_s);

        ssid = wpa_s->current_ssid;
        if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
                wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
                if (wpa_s->global->p2p_group_formation == wpa_s)
                        wpa_s->global->p2p_group_formation = NULL;
                wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency,
                                       params->passphrase[0] == '\0' ?
                                       params->psk : NULL,
                                       params->passphrase,
                                       wpa_s->global->p2p_dev_addr,
                                       params->persistent_group, "");
                wpa_s->group_formation_reported = 1;

                os_get_reltime(&wpa_s->global->p2p_go_wait_client);
                if (params->persistent_group) {
                        network_id = wpas_p2p_store_persistent_group(
                                wpa_s->parent, ssid,
                                wpa_s->global->p2p_dev_addr);
                        wpas_p2p_add_psk_list(wpa_s, ssid);
                }
                if (network_id < 0)
                        network_id = ssid->id;
                wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
                wpas_p2p_cross_connect_setup(wpa_s);
                wpas_p2p_set_group_idle_timeout(wpa_s);

                if (wpa_s->p2p_first_connection_timeout) {
                        wpa_dbg(wpa_s, MSG_DEBUG,
                                "P2P: Start group formation timeout of %d seconds until first data connection on GO",
                                wpa_s->p2p_first_connection_timeout);
                        wpa_s->p2p_go_group_formation_completed = 0;
                        wpa_s->global->p2p_group_formation = wpa_s;
                        eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
                                             wpa_s->parent, NULL);
                        eloop_register_timeout(
                                wpa_s->p2p_first_connection_timeout, 0,
                                wpas_p2p_group_formation_timeout,
                                wpa_s->parent, NULL);
                }

                return;
        }

        wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
        if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
                                              params->peer_interface_addr)) {
                wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
                           "filtering");
                return;
        }
        if (params->wps_method == WPS_PBC) {
                wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
                                          params->peer_device_addr);
#ifdef CONFIG_WPS_NFC
        } else if (params->wps_method == WPS_NFC) {
                if (wpa_s->parent->p2p_oob_dev_pw_id !=
                    DEV_PW_NFC_CONNECTION_HANDOVER &&
                    !wpa_s->parent->p2p_oob_dev_pw) {
                        wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
                        return;
                }
                wpas_ap_wps_add_nfc_pw(
                        wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
                        wpa_s->parent->p2p_oob_dev_pw,
                        wpa_s->parent->p2p_peer_oob_pk_hash_known ?
                        wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
#endif /* CONFIG_WPS_NFC */
        } else if (wpa_s->p2p_pin[0])
                wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
                                          wpa_s->p2p_pin, NULL, 0, 0);
        os_free(wpa_s->go_params);
        wpa_s->go_params = NULL;
}


static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
                              struct p2p_go_neg_results *params,
                              int group_formation)
{
        struct wpa_ssid *ssid;

        wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
        if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
                wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
                        "results");
                return;
        }

        ssid = wpa_config_add_network(wpa_s->conf);
        if (ssid == NULL) {
                wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
                return;
        }

        wpa_s->show_group_started = 0;
        wpa_s->p2p_go_group_formation_completed = 0;
        wpa_s->group_formation_reported = 0;

        wpa_config_set_network_defaults(ssid);
        ssid->temporary = 1;
        ssid->p2p_group = 1;
        ssid->p2p_persistent_group = params->persistent_group;
        ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
                WPAS_MODE_P2P_GO;
        ssid->frequency = params->freq;
        ssid->ht40 = params->ht40;
        ssid->vht = params->vht;
        ssid->ssid = os_zalloc(params->ssid_len + 1);
        if (ssid->ssid) {
                os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
                ssid->ssid_len = params->ssid_len;
        }
        ssid->auth_alg = WPA_AUTH_ALG_OPEN;
        ssid->key_mgmt = WPA_KEY_MGMT_PSK;
        ssid->proto = WPA_PROTO_RSN;
        ssid->pairwise_cipher = WPA_CIPHER_CCMP;
        ssid->group_cipher = WPA_CIPHER_CCMP;
        if (params->freq > 56160) {
                /*
                 * Enable GCMP instead of CCMP as pairwise_cipher and
                 * group_cipher in 60 GHz.
                 */
                ssid->pairwise_cipher = WPA_CIPHER_GCMP;
                ssid->group_cipher = WPA_CIPHER_GCMP;
        }
        if (os_strlen(params->passphrase) > 0) {
                ssid->passphrase = os_strdup(params->passphrase);
                if (ssid->passphrase == NULL) {
                        wpa_msg_global(wpa_s, MSG_ERROR,
                                       "P2P: Failed to copy passphrase for GO");
                        wpa_config_remove_network(wpa_s->conf, ssid->id);
                        return;
                }
        } else
                ssid->passphrase = NULL;
        ssid->psk_set = params->psk_set;
        if (ssid->psk_set)
                os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
        else if (ssid->passphrase)
                wpa_config_update_psk(ssid);
        ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;

        wpa_s->ap_configured_cb = p2p_go_configured;
        wpa_s->ap_configured_cb_ctx = wpa_s;
        wpa_s->ap_configured_cb_data = wpa_s->go_params;
        wpa_s->scan_req = NORMAL_SCAN_REQ;
        wpa_s->connect_without_scan = ssid;
        wpa_s->reassociate = 1;
        wpa_s->disconnected = 0;
        wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
                "start GO)");
        wpa_supplicant_req_scan(wpa_s, 0, 0);
}


static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
                                  const struct wpa_supplicant *src)
{
        struct wpa_config *d;
        const struct wpa_config *s;

        d = dst->conf;
        s = src->conf;

#define C(n) if (s->n) d->n = os_strdup(s->n)
        C(device_name);
        C(manufacturer);
        C(model_name);
        C(model_number);
        C(serial_number);
        C(config_methods);
#undef C

        os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
        os_memcpy(d->sec_device_type, s->sec_device_type,
                  sizeof(d->sec_device_type));
        d->num_sec_device_types = s->num_sec_device_types;

        d->p2p_group_idle = s->p2p_group_idle;
        d->p2p_intra_bss = s->p2p_intra_bss;
        d->persistent_reconnect = s->persistent_reconnect;
        d->max_num_sta = s->max_num_sta;
        d->pbc_in_m1 = s->pbc_in_m1;
        d->ignore_old_scan_res = s->ignore_old_scan_res;
        d->beacon_int = s->beacon_int;
        d->dtim_period = s->dtim_period;
        d->disassoc_low_ack = s->disassoc_low_ack;
        d->disable_scan_offload = s->disable_scan_offload;

        if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey) {
                d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
                d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
        }
}


static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
                                      char *ifname, size_t len)
{
        char *ifname_ptr = wpa_s->ifname;

        if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
                       os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
                ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
        }

        os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
        if (os_strlen(ifname) >= IFNAMSIZ &&
            os_strlen(wpa_s->ifname) < IFNAMSIZ) {
                /* Try to avoid going over the IFNAMSIZ length limit */
                os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
        }
}


static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
                                        enum wpa_driver_if_type type)
{
        char ifname[120], force_ifname[120];

        if (wpa_s->pending_interface_name[0]) {
                wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
                           "- skip creation of a new one");
                if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
                        wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
                                   "unknown?! ifname='%s'",
                                   wpa_s->pending_interface_name);
                        return -1;
                }
                return 0;
        }

        wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
        force_ifname[0] = '\0';

        wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
                   ifname);
        wpa_s->p2p_group_idx++;

        wpa_s->pending_interface_type = type;
        if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
                           wpa_s->pending_interface_addr, NULL) < 0) {
                wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
                           "interface");
                return -1;
        }

        if (force_ifname[0]) {
                wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
                           force_ifname);
                os_strlcpy(wpa_s->pending_interface_name, force_ifname,
                           sizeof(wpa_s->pending_interface_name));
        } else
                os_strlcpy(wpa_s->pending_interface_name, ifname,
                           sizeof(wpa_s->pending_interface_name));
        wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
                   MACSTR, wpa_s->pending_interface_name,
                   MAC2STR(wpa_s->pending_interface_addr));

        return 0;
}


static void wpas_p2p_remove_pending_group_interface(
        struct wpa_supplicant *wpa_s)
{
        if (!wpa_s->pending_interface_name[0] ||
            is_zero_ether_addr(wpa_s->pending_interface_addr))
                return; /* No pending virtual interface */

        wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
                   wpa_s->pending_interface_name);
        wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
                          wpa_s->pending_interface_name);
        os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
        wpa_s->pending_interface_name[0] = '\0';
}


static struct wpa_supplicant *
wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
{
        struct wpa_interface iface;
        struct wpa_supplicant *group_wpa_s;

        if (!wpa_s->pending_interface_name[0]) {
                wpa_printf(MSG_ERROR, "P2P: No pending group interface");
                if (!wpas_p2p_create_iface(wpa_s))
                        return NULL;
                /*
                 * Something has forced us to remove the pending interface; try
                 * to create a new one and hope for the best that we will get
                 * the same local address.
                 */
                if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
                                                 WPA_IF_P2P_CLIENT) < 0)
                        return NULL;
        }

        os_memset(&iface, 0, sizeof(iface));
        iface.ifname = wpa_s->pending_interface_name;
        iface.driver = wpa_s->driver->name;
        if (wpa_s->conf->ctrl_interface == NULL &&
            wpa_s->parent != wpa_s &&
            wpa_s->p2p_mgmt &&
            (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
                iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
        else
                iface.ctrl_interface = wpa_s->conf->ctrl_interface;
        iface.driver_param = wpa_s->conf->driver_param;
        group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
        if (group_wpa_s == NULL) {
                wpa_printf(MSG_ERROR, "P2P: Failed to create new "
                           "wpa_supplicant interface");
                return NULL;
        }
        wpa_s->pending_interface_name[0] = '\0';
        group_wpa_s->parent = wpa_s;
        group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
                P2P_GROUP_INTERFACE_CLIENT;
        wpa_s->global->p2p_group_formation = group_wpa_s;

        wpas_p2p_clone_config(group_wpa_s, wpa_s);

        return group_wpa_s;
}


static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
                                             void *timeout_ctx)
{
        struct wpa_supplicant *wpa_s = eloop_ctx;
        wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
        wpas_p2p_group_formation_failed(wpa_s);
}


void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s)
{
        eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
                             wpa_s->parent, NULL);
        if (wpa_s->global->p2p)
                p2p_group_formation_failed(wpa_s->global->p2p);
        wpas_group_formation_completed(wpa_s, 0);
}


static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
{
        wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
        eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
                             wpa_s->parent, NULL);
        eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
                               wpa_s->parent, NULL);
        wpa_s->global->p2p_fail_on_wps_complete = 0;
}


void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
{
        if (wpa_s->global->p2p_group_formation != wpa_s)
                return;
        /* Speed up group formation timeout since this cannot succeed */
        eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
                             wpa_s->parent, NULL);
        eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
                               wpa_s->parent, NULL);
}


static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
{
        struct wpa_supplicant *wpa_s = ctx;

        if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
                wpa_drv_cancel_remain_on_channel(wpa_s);
                wpa_s->off_channel_freq = 0;
                wpa_s->roc_waiting_drv_freq = 0;
        }

        if (res->status) {
                wpa_msg_global(wpa_s, MSG_INFO,
                               P2P_EVENT_GO_NEG_FAILURE "status=%d",
                               res->status);
                wpas_notify_p2p_go_neg_completed(wpa_s, res);
                wpas_p2p_remove_pending_group_interface(wpa_s);
                return;
        }

        if (wpa_s->p2p_go_ht40)
                res->ht40 = 1;
        if (wpa_s->p2p_go_vht)
                res->vht = 1;

        wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
                       "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
                       " wps_method=%s",
                       res->role_go ? "GO" : "client", res->freq, res->ht40,
                       MAC2STR(res->peer_device_addr),
                       MAC2STR(res->peer_interface_addr),
                       p2p_wps_method_text(res->wps_method));
        wpas_notify_p2p_go_neg_completed(wpa_s, res);

        if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
                struct wpa_ssid *ssid;
                ssid = wpa_config_get_network(wpa_s->conf,
                                              wpa_s->p2p_persistent_id);
                if (ssid && ssid->disabled == 2 &&
                    ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
                        size_t len = os_strlen(ssid->passphrase);
                        wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
                                   "on requested persistent group");
                        os_memcpy(res->passphrase, ssid->passphrase, len);
                        res->passphrase[len] = '\0';
                }
        }

        if (wpa_s->create_p2p_iface) {
                struct wpa_supplicant *group_wpa_s =
                        wpas_p2p_init_group_interface(wpa_s, res->role_go);
                if (group_wpa_s == NULL) {
                        wpas_p2p_remove_pending_group_interface(wpa_s);
                        eloop_cancel_timeout(wpas_p2p_long_listen_timeout,
                                             wpa_s, NULL);
                        wpas_p2p_group_formation_failed(wpa_s);
                        return;
                }
                if (group_wpa_s != wpa_s) {
                        os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
                                  sizeof(group_wpa_s->p2p_pin));
                        group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
                }
                os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
                wpa_s->pending_interface_name[0] = '\0';
                group_wpa_s->p2p_in_provisioning = 1;

                if (res->role_go)
                        wpas_start_wps_go(group_wpa_s, res, 1);
                else
                        wpas_start_wps_enrollee(group_wpa_s, res);
        } else {
                wpa_s->p2p_in_provisioning = 1;
                wpa_s->global->p2p_group_formation = wpa_s;

                if (res->role_go)
                        wpas_start_wps_go(wpa_s, res, 1);
                else
                        wpas_start_wps_enrollee(ctx, res);
        }

        wpa_s->p2p_long_listen = 0;
        eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);

        eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
        eloop_register_timeout(15 + res->peer_config_timeout / 100,
                               (res->peer_config_timeout % 100) * 10000,
                               wpas_p2p_group_formation_timeout, wpa_s, NULL);
}


static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id)
{
        struct wpa_supplicant *wpa_s = ctx;
        wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
                       " dev_passwd_id=%u", MAC2STR(src), dev_passwd_id);

        wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id);
}


static void wpas_dev_found(void *ctx, const u8 *addr,
                           const struct p2p_peer_info *info,
                           int new_device)
{
#ifndef CONFIG_NO_STDOUT_DEBUG
        struct wpa_supplicant *wpa_s = ctx;
        char devtype[WPS_DEV_TYPE_BUFSIZE];
        char *wfd_dev_info_hex = NULL;

#ifdef CONFIG_WIFI_DISPLAY
        wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
                                                    WFD_SUBELEM_DEVICE_INFO);
#endif /* CONFIG_WIFI_DISPLAY */

        wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
                       " p2p_dev_addr=" MACSTR
                       " pri_dev_type=%s name='%s' config_methods=0x%x "
                       "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d",
                       MAC2STR(addr), MAC2STR(info->p2p_device_addr),
                       wps_dev_type_bin2str(info->pri_dev_type, devtype,
                                            sizeof(devtype)),
                       info->device_name, info->config_methods,
                       info->dev_capab, info->group_capab,
                       wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
                       wfd_dev_info_hex ? wfd_dev_info_hex : "",
                       info->vendor_elems ? " vendor_elems=1" : "",
                       new_device);

        os_free(wfd_dev_info_hex);
#endif /* CONFIG_NO_STDOUT_DEBUG */

        wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
}


static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
{
        struct wpa_supplicant *wpa_s = ctx;

        wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
                       "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));

        wpas_notify_p2p_device_lost(wpa_s, dev_addr);
}


static void wpas_find_stopped(void *ctx)
{
        struct wpa_supplicant *wpa_s = ctx;
        wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
}


struct wpas_p2p_listen_work {
        unsigned int freq;
        unsigned int duration;
        struct wpabuf *probe_resp_ie;
};


static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
{
        if (lwork == NULL)
                return;
        wpabuf_free(lwork->probe_resp_ie);
        os_free(lwork);
}


static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
{
        struct wpas_p2p_listen_work *lwork;

        if (!wpa_s->p2p_listen_work)
                return;

        lwork = wpa_s->p2p_listen_work->ctx;
        wpas_p2p_listen_work_free(lwork);
        radio_work_done(wpa_s->p2p_listen_work);
        wpa_s->p2p_listen_work = NULL;
}


static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
{
        struct wpa_supplicant *wpa_s = work->wpa_s;
        struct wpas_p2p_listen_work *lwork = work->ctx;
        unsigned int duration;

        if (deinit) {
                if (work->started) {
                        wpa_s->p2p_listen_work = NULL;
                        wpas_stop_listen(wpa_s);
                }
                wpas_p2p_listen_work_free(lwork);
                return;
        }

        wpa_s->p2p_listen_work = work;

        wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);

        if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
                wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
                           "report received Probe Request frames");
                wpas_p2p_listen_work_done(wpa_s);
                return;
        }

        wpa_s->pending_listen_freq = lwork->freq;
        wpa_s->pending_listen_duration = lwork->duration;

        duration = lwork->duration;
#ifdef CONFIG_TESTING_OPTIONS
        if (wpa_s->extra_roc_dur) {
                wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u",
                           duration, duration + wpa_s->extra_roc_dur);
                duration += wpa_s->extra_roc_dur;
        }
#endif /* CONFIG_TESTING_OPTIONS */

        if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) {
                wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
                           "to remain on channel (%u MHz) for Listen "
                           "state", lwork->freq);
                wpas_p2p_listen_work_done(wpa_s);
                wpa_s->pending_listen_freq = 0;
                return;
        }
        wpa_s->off_channel_freq = 0;
        wpa_s->roc_waiting_drv_freq = lwork->freq;
}


static int wpas_start_listen(void *ctx, unsigned int freq,
                             unsigned int duration,
                             const struct wpabuf *probe_resp_ie)
{
        struct wpa_supplicant *wpa_s = ctx;
        struct wpas_p2p_listen_work *lwork;

        if (wpa_s->p2p_listen_work) {
                wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
                return -1;
        }

        lwork = os_zalloc(sizeof(*lwork));
        if (lwork == NULL)
                return -1;
        lwork->freq = freq;
        lwork->duration = duration;
        if (probe_resp_ie) {
                lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
                if (lwork->probe_resp_ie == NULL) {
                        wpas_p2p_listen_work_free(lwork);
                        return -1;
                }
        }

        if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
                           lwork) < 0) {
                wpas_p2p_listen_work_free(lwork);
                return -1;
        }

        return 0;
}


static void wpas_stop_listen(void *ctx)
{
        struct wpa_supplicant *wpa_s = ctx;
        if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
                wpa_drv_cancel_remain_on_channel(wpa_s);
                wpa_s->off_channel_freq = 0;
                wpa_s->roc_waiting_drv_freq = 0;
        }
        wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
        wpa_drv_probe_req_report(wpa_s, 0);
        wpas_p2p_listen_work_done(wpa_s);
}


static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf)
{
        struct wpa_supplicant *wpa_s = ctx;
        return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1);
}


/*
 * DNS Header section is used only to calculate compression pointers, so the
 * contents of this data does not matter, but the length needs to be reserved
 * in the virtual packet.
 */
#define DNS_HEADER_LEN 12

/*
 * 27-octet in-memory packet from P2P specification containing two implied
 * queries for _tcp.lcoal. PTR IN and _udp.local. PTR IN
 */
#define P2P_SD_IN_MEMORY_LEN 27

static int p2p_sd_dns_uncompress_label(char **upos, char *uend, u8 *start,
                                       u8 **spos, const u8 *end)
{
        while (*spos < end) {
                u8 val = ((*spos)[0] & 0xc0) >> 6;
                int len;

                if (val == 1 || val == 2) {
                        /* These are reserved values in RFC 1035 */
                        wpa_printf(MSG_DEBUG, "P2P: Invalid domain name "
                                   "sequence starting with 0x%x", val);
                        return -1;
                }

                if (val == 3) {
                        u16 offset;
                        u8 *spos_tmp;

                        /* Offset */
                        if (*spos + 2 > end) {
                                wpa_printf(MSG_DEBUG, "P2P: No room for full "
                                           "DNS offset field");
                                return -1;
                        }

                        offset = (((*spos)[0] & 0x3f) << 8) | (*spos)[1];
                        if (offset >= *spos - start) {
                                wpa_printf(MSG_DEBUG, "P2P: Invalid DNS "
                                           "pointer offset %u", offset);
                                return -1;
                        }

                        (*spos) += 2;
                        spos_tmp = start + offset;
                        return p2p_sd_dns_uncompress_label(upos, uend, start,
                                                           &spos_tmp,
                                                           *spos - 2);
                }

                /* Label */
                len = (*spos)[0] & 0x3f;
                if (len == 0)
                        return 0;

                (*spos)++;
                if (*spos + len > end) {
                        wpa_printf(MSG_DEBUG, "P2P: Invalid domain name "
                                   "sequence - no room for label with length "
                                   "%u", len);
                        return -1;
                }

                if (*upos + len + 2 > uend)
                        return -2;

                os_memcpy(*upos, *spos, len);
                *spos += len;
                *upos += len;
                (*upos)[0] = '.';
                (*upos)++;
                (*upos)[0] = '\0';
        }

        return 0;
}


/* Uncompress domain names per RFC 1035 using the P2P SD in-memory packet.
 * Returns -1 on parsing error (invalid input sequence), -2 if output buffer is
 * not large enough */
static int p2p_sd_dns_uncompress(char *buf, size_t buf_len, const u8 *msg,
                                 size_t msg_len, size_t offset)
{
        /* 27-octet in-memory packet from P2P specification */
        const char *prefix = "\x04_tcp\x05local\x00\x00\x0C\x00\x01"
                "\x04_udp\xC0\x11\x00\x0C\x00\x01";
        u8 *tmp, *end, *spos;
        char *upos, *uend;
        int ret = 0;

        if (buf_len < 2)
                return -1;
        if (offset > msg_len)
                return -1;

        tmp = os_malloc(DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN + msg_len);
        if (tmp == NULL)
                return -1;
        spos = tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN;
        end = spos + msg_len;
        spos += offset;

        os_memset(tmp, 0, DNS_HEADER_LEN);
        os_memcpy(tmp + DNS_HEADER_LEN, prefix, P2P_SD_IN_MEMORY_LEN);
        os_memcpy(tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN, msg, msg_len);

        upos = buf;
        uend = buf + buf_len;

        ret = p2p_sd_dns_uncompress_label(&upos, uend, tmp, &spos, end);
        if (ret) {
                os_free(tmp);
                return ret;
        }

        if (upos == buf) {
                upos[0] = '.';
                upos[1] = '\0';
        } else if (upos[-1] == '.')
                upos[-1] = '\0';

        os_free(tmp);
        return 0;
}


static struct p2p_srv_bonjour *
wpas_p2p_service_get_bonjour(struct wpa_supplicant *wpa_s,
                             const struct wpabuf *query)
{
        struct p2p_srv_bonjour *bsrv;
        size_t len;

        len = wpabuf_len(query);
        dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
                         struct p2p_srv_bonjour, list) {
                if (len == wpabuf_len(bsrv->query) &&
                    os_memcmp(wpabuf_head(query), wpabuf_head(bsrv->query),
                              len) == 0)
                        return bsrv;
        }
        return NULL;
}


static struct p2p_srv_upnp *
wpas_p2p_service_get_upnp(struct wpa_supplicant *wpa_s, u8 version,
                          const char *service)
{
        struct p2p_srv_upnp *usrv;

        dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
                         struct p2p_srv_upnp, list) {
                if (version == usrv->version &&
                    os_strcmp(service, usrv->service) == 0)
                        return usrv;
        }
        return NULL;
}


static void wpas_sd_add_proto_not_avail(struct wpabuf *resp, u8 srv_proto,
                                        u8 srv_trans_id)
{
        u8 *len_pos;

        if (wpabuf_tailroom(resp) < 5)
                return;

        /* Length (to be filled) */
        len_pos = wpabuf_put(resp, 2);
        wpabuf_put_u8(resp, srv_proto);
        wpabuf_put_u8(resp, srv_trans_id);
        /* Status Code */
        wpabuf_put_u8(resp, P2P_SD_PROTO_NOT_AVAILABLE);
        /* Response Data: empty */
        WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
}


static void wpas_sd_all_bonjour(struct wpa_supplicant *wpa_s,
                                struct wpabuf *resp, u8 srv_trans_id)
{
        struct p2p_srv_bonjour *bsrv;
        u8 *len_pos;

        wpa_printf(MSG_DEBUG, "P2P: SD Request for all Bonjour services");

        if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
                wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
                return;
        }

        dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
                         struct p2p_srv_bonjour, list) {
                if (wpabuf_tailroom(resp) <
                    5 + wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp))
                        return;
                /* Length (to be filled) */
                len_pos = wpabuf_put(resp, 2);
                wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
                wpabuf_put_u8(resp, srv_trans_id);
                /* Status Code */
                wpabuf_put_u8(resp, P2P_SD_SUCCESS);
                wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
                                  wpabuf_head(bsrv->resp),
                                  wpabuf_len(bsrv->resp));
                /* Response Data */
                wpabuf_put_buf(resp, bsrv->query); /* Key */
                wpabuf_put_buf(resp, bsrv->resp); /* Value */
                WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
                             2);
        }
}


static int match_bonjour_query(struct p2p_srv_bonjour *bsrv, const u8 *query,
                               size_t query_len)
{
        char str_rx[256], str_srv[256];

        if (query_len < 3 || wpabuf_len(bsrv->query) < 3)
                return 0; /* Too short to include DNS Type and Version */
        if (os_memcmp(query + query_len - 3,
                      wpabuf_head_u8(bsrv->query) + wpabuf_len(bsrv->query) - 3,
                      3) != 0)
                return 0; /* Mismatch in DNS Type or Version */
        if (query_len == wpabuf_len(bsrv->query) &&
            os_memcmp(query, wpabuf_head(bsrv->query), query_len - 3) == 0)
                return 1; /* Binary match */

        if (p2p_sd_dns_uncompress(str_rx, sizeof(str_rx), query, query_len - 3,
                                  0))
                return 0; /* Failed to uncompress query */
        if (p2p_sd_dns_uncompress(str_srv, sizeof(str_srv),
                                  wpabuf_head(bsrv->query),
                                  wpabuf_len(bsrv->query) - 3, 0))
                return 0; /* Failed to uncompress service */

        return os_strcmp(str_rx, str_srv) == 0;
}


static void wpas_sd_req_bonjour(struct wpa_supplicant *wpa_s,
                                struct wpabuf *resp, u8 srv_trans_id,
                                const u8 *query, size_t query_len)
{
        struct p2p_srv_bonjour *bsrv;
        u8 *len_pos;
        int matches = 0;

        wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for Bonjour",
                          query, query_len);
        if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
                wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
                wpas_sd_add_proto_not_avail(resp, P2P_SERV_BONJOUR,
                                            srv_trans_id);
                return;
        }

        if (query_len == 0) {
                wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
                return;
        }

        dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
                         struct p2p_srv_bonjour, list) {
                if (!match_bonjour_query(bsrv, query, query_len))
                        continue;

                if (wpabuf_tailroom(resp) <
                    5 + query_len + wpabuf_len(bsrv->resp))
                        return;

                matches++;

                /* Length (to be filled) */
                len_pos = wpabuf_put(resp, 2);
                wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
                wpabuf_put_u8(resp, srv_trans_id);

                /* Status Code */
                wpabuf_put_u8(resp, P2P_SD_SUCCESS);
                wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
                                  wpabuf_head(bsrv->resp),
                                  wpabuf_len(bsrv->resp));

                /* Response Data */
                wpabuf_put_data(resp, query, query_len); /* Key */
                wpabuf_put_buf(resp, bsrv->resp); /* Value */

                WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
        }

        if (matches == 0) {
                wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour service not "
                           "available");
                if (wpabuf_tailroom(resp) < 5)
                        return;

                /* Length (to be filled) */
                len_pos = wpabuf_put(resp, 2);
                wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
                wpabuf_put_u8(resp, srv_trans_id);

                /* Status Code */
                wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
                /* Response Data: empty */
                WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
                             2);
        }
}


static void wpas_sd_all_upnp(struct wpa_supplicant *wpa_s,
                             struct wpabuf *resp, u8 srv_trans_id)
{
        struct p2p_srv_upnp *usrv;
        u8 *len_pos;

        wpa_printf(MSG_DEBUG, "P2P: SD Request for all UPnP services");

        if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
                wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
                return;
        }

        dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
                         struct p2p_srv_upnp, list) {
                if (wpabuf_tailroom(resp) < 5 + 1 + os_strlen(usrv->service))
                        return;

                /* Length (to be filled) */
                len_pos = wpabuf_put(resp, 2);
                wpabuf_put_u8(resp, P2P_SERV_UPNP);
                wpabuf_put_u8(resp, srv_trans_id);

                /* Status Code */
                wpabuf_put_u8(resp, P2P_SD_SUCCESS);
                /* Response Data */
                wpabuf_put_u8(resp, usrv->version);
                wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
                           usrv->service);
                wpabuf_put_str(resp, usrv->service);
                WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
                             2);
        }
}


static void wpas_sd_req_upnp(struct wpa_supplicant *wpa_s,
                             struct wpabuf *resp, u8 srv_trans_id,
                             const u8 *query, size_t query_len)
{
        struct p2p_srv_upnp *usrv;
        u8 *len_pos;
        u8 version;
        char *str;
        int count = 0;

        wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for UPnP",
                          query, query_len);

        if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
                wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
                wpas_sd_add_proto_not_avail(resp, P2P_SERV_UPNP,
                                            srv_trans_id);
                return;
        }

        if (query_len == 0) {
                wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
                return;
        }

        if (wpabuf_tailroom(resp) < 5)
                return;

        /* Length (to be filled) */
        len_pos = wpabuf_put(resp, 2);
        wpabuf_put_u8(resp, P2P_SERV_UPNP);
        wpabuf_put_u8(resp, srv_trans_id);

        version = query[0];
        str = os_malloc(query_len);
        if (str == NULL)
                return;
        os_memcpy(str, query + 1, query_len - 1);
        str[query_len - 1] = '\0';

        dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
                         struct p2p_srv_upnp, list) {
                if (version != usrv->version)
                        continue;

                if (os_strcmp(str, "ssdp:all") != 0 &&
                    os_strstr(usrv->service, str) == NULL)
                        continue;

                if (wpabuf_tailroom(resp) < 2)
                        break;
                if (count == 0) {
                        /* Status Code */
                        wpabuf_put_u8(resp, P2P_SD_SUCCESS);
                        /* Response Data */
                        wpabuf_put_u8(resp, version);
                } else
                        wpabuf_put_u8(resp, ',');

                count++;

                wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
                           usrv->service);
                if (wpabuf_tailroom(resp) < os_strlen(usrv->service))
                        break;
                wpabuf_put_str(resp, usrv->service);
        }
        os_free(str);

        if (count == 0) {
                wpa_printf(MSG_DEBUG, "P2P: Requested UPnP service not "
                           "available");
                /* Status Code */
                wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
                /* Response Data: empty */
        }

        WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
}


#ifdef CONFIG_WIFI_DISPLAY
static void wpas_sd_req_wfd(struct wpa_supplicant *wpa_s,
                            struct wpabuf *resp, u8 srv_trans_id,
                            const u8 *query, size_t query_len)
{
        const u8 *pos;
        u8 role;
        u8 *len_pos;

        wpa_hexdump(MSG_DEBUG, "P2P: SD Request for WFD", query, query_len);

        if (!wpa_s->global->wifi_display) {
                wpa_printf(MSG_DEBUG, "P2P: WFD protocol not available");
                wpas_sd_add_proto_not_avail(resp, P2P_SERV_WIFI_DISPLAY,
                                            srv_trans_id);
                return;
        }

        if (query_len < 1) {
                wpa_printf(MSG_DEBUG, "P2P: Missing WFD Requested Device "
                           "Role");
                return;
        }

        if (wpabuf_tailroom(resp) < 5)
                return;

        pos = query;
        role = *pos++;
        wpa_printf(MSG_DEBUG, "P2P: WSD for device role 0x%x", role);

        /* TODO: role specific handling */

        /* Length (to be filled) */
        len_pos = wpabuf_put(resp, 2);
        wpabuf_put_u8(resp, P2P_SERV_WIFI_DISPLAY);
        wpabuf_put_u8(resp, srv_trans_id);
        wpabuf_put_u8(resp, P2P_SD_SUCCESS); /* Status Code */

        while (pos < query + query_len) {
                if (*pos < MAX_WFD_SUBELEMS &&
                    wpa_s->global->wfd_subelem[*pos] &&
                    wpabuf_tailroom(resp) >=
                    wpabuf_len(wpa_s->global->wfd_subelem[*pos])) {
                        wpa_printf(MSG_DEBUG, "P2P: Add WSD response "
                                   "subelement %u", *pos);
                        wpabuf_put_buf(resp, wpa_s->global->wfd_subelem[*pos]);
                }
                pos++;
        }

        WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
}
#endif /* CONFIG_WIFI_DISPLAY */


static void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token,
                            u16 update_indic, const u8 *tlvs, size_t tlvs_len)
{
        struct wpa_supplicant *wpa_s = ctx;
        const u8 *pos = tlvs;
        const u8 *end = tlvs + tlvs_len;
        const u8 *tlv_end;
        u16 slen;
        struct wpabuf *resp;
        u8 srv_proto, srv_trans_id;
        size_t buf_len;
        char *buf;

        wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Request TLVs",
                    tlvs, tlvs_len);
        buf_len = 2 * tlvs_len + 1;
        buf = os_malloc(buf_len);
        if (buf) {
                wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
                wpa_msg_ctrl(wpa_s, MSG_INFO, P2P_EVENT_SERV_DISC_REQ "%d "
                             MACSTR " %u %u %s",
                             freq, MAC2STR(sa), dialog_token, update_indic,
                             buf);
                os_free(buf);
        }

        if (wpa_s->p2p_sd_over_ctrl_iface) {
                wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
                                           update_indic, tlvs, tlvs_len);
                return; /* to be processed by an external program */
        }

        resp = wpabuf_alloc(10000);
        if (resp == NULL)
                return;

        while (pos + 1 < end) {
                wpa_printf(MSG_DEBUG, "P2P: Service Request TLV");
                slen = WPA_GET_LE16(pos);
                pos += 2;
                if (pos + slen > end || slen < 2) {
                        wpa_printf(MSG_DEBUG, "P2P: Unexpected Query Data "
                                   "length");
                        wpabuf_free(resp);
                        return;
                }
                tlv_end = pos + slen;

                srv_proto = *pos++;
                wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
                           srv_proto);
                srv_trans_id = *pos++;
                wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
                           srv_trans_id);

                wpa_hexdump(MSG_MSGDUMP, "P2P: Query Data",
                            pos, tlv_end - pos);


                if (wpa_s->force_long_sd) {
                        wpa_printf(MSG_DEBUG, "P2P: SD test - force long "
                                   "response");
                        wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
                        wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
                        goto done;
                }

                switch (srv_proto) {
                case P2P_SERV_ALL_SERVICES:
                        wpa_printf(MSG_DEBUG, "P2P: Service Discovery Request "
                                   "for all services");
                        if (dl_list_empty(&wpa_s->global->p2p_srv_upnp) &&
                            dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
                                wpa_printf(MSG_DEBUG, "P2P: No service "
                                           "discovery protocols available");
                                wpas_sd_add_proto_not_avail(
                                        resp, P2P_SERV_ALL_SERVICES,
                                        srv_trans_id);
                                break;
                        }
                        wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
                        wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
                        break;
                case P2P_SERV_BONJOUR:
                        wpas_sd_req_bonjour(wpa_s, resp, srv_trans_id,
                                            pos, tlv_end - pos);
                        break;
                case P2P_SERV_UPNP:
                        wpas_sd_req_upnp(wpa_s, resp, srv_trans_id,
                                         pos, tlv_end - pos);
                        break;
#ifdef CONFIG_WIFI_DISPLAY
                case P2P_SERV_WIFI_DISPLAY:
                        wpas_sd_req_wfd(wpa_s, resp, srv_trans_id,
                                        pos, tlv_end - pos);
                        break;
#endif /* CONFIG_WIFI_DISPLAY */
                default:
                        wpa_printf(MSG_DEBUG, "P2P: Unavailable service "
                                   "protocol %u", srv_proto);
                        wpas_sd_add_proto_not_avail(resp, srv_proto,
                                                    srv_trans_id);
                        break;
                }

                pos = tlv_end;
        }

done:
        wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
                                   update_indic, tlvs, tlvs_len);

        wpas_p2p_sd_response(wpa_s, freq, sa, dialog_token, resp);

        wpabuf_free(resp);
}


static void wpas_sd_response(void *ctx, const u8 *sa, u16 update_indic,
                             const u8 *tlvs, size_t tlvs_len)
{
        struct wpa_supplicant *wpa_s = ctx;
        const u8 *pos = tlvs;
        const u8 *end = tlvs + tlvs_len;
        const u8 *tlv_end;
        u16 slen;
        size_t buf_len;
        char *buf;

        wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Response TLVs",
                    tlvs, tlvs_len);
        if (tlvs_len > 1500) {
                /* TODO: better way for handling this */
                wpa_msg_ctrl(wpa_s, MSG_INFO,
                             P2P_EVENT_SERV_DISC_RESP MACSTR
                             " %u <long response: %u bytes>",
                             MAC2STR(sa), update_indic,
                             (unsigned int) tlvs_len);
        } else {
                buf_len = 2 * tlvs_len + 1;
                buf = os_malloc(buf_len);
                if (buf) {
                        wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
                        wpa_msg_ctrl(wpa_s, MSG_INFO,
                                     P2P_EVENT_SERV_DISC_RESP MACSTR " %u %s",
                                     MAC2STR(sa), update_indic, buf);
                        os_free(buf);
                }
        }

        while (pos < end) {
                u8 srv_proto, srv_trans_id, status;

                wpa_printf(MSG_DEBUG, "P2P: Service Response TLV");
                slen = WPA_GET_LE16(pos);
                pos += 2;
                if (pos + slen > end || slen < 3) {
                        wpa_printf(MSG_DEBUG, "P2P: Unexpected Response Data "
                                   "length");
                        return;
                }
                tlv_end = pos + slen;

                srv_proto = *pos++;
                wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
                           srv_proto);
                srv_trans_id = *pos++;
                wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
                           srv_trans_id);
                status = *pos++;
                wpa_printf(MSG_DEBUG, "P2P: Status Code ID %u",
                           status);

                wpa_hexdump(MSG_MSGDUMP, "P2P: Response Data",
                            pos, tlv_end - pos);

                pos = tlv_end;
        }

        wpas_notify_p2p_sd_response(wpa_s, sa, update_indic, tlvs, tlvs_len);
}


u64 wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst,
                        const struct wpabuf *tlvs)
{
        if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
                return 0;
        return (uintptr_t) p2p_sd_request(wpa_s->global->p2p, dst, tlvs);
}


u64 wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst,
                             u8 version, const char *query)
{
        struct wpabuf *tlvs;
        u64 ret;

        tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query));
        if (tlvs == NULL)
                return 0;
        wpabuf_put_le16(tlvs, 1 + 1 + 1 + os_strlen(query));
        wpabuf_put_u8(tlvs, P2P_SERV_UPNP); /* Service Protocol Type */
        wpabuf_put_u8(tlvs, 1); /* Service Transaction ID */
        wpabuf_put_u8(tlvs, version);
        wpabuf_put_str(tlvs, query);
        ret = wpas_p2p_sd_request(wpa_s, dst, tlvs);
        wpabuf_free(tlvs);
        return ret;
}


#ifdef CONFIG_WIFI_DISPLAY

static u64 wpas_p2p_sd_request_wfd(struct wpa_supplicant *wpa_s, const u8 *dst,
                                   const struct wpabuf *tlvs)
{
        if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
                return 0;
        return (uintptr_t) p2p_sd_request_wfd(wpa_s->global->p2p, dst, tlvs);
}


#define MAX_WFD_SD_SUBELEMS 20

static void wfd_add_sd_req_role(struct wpabuf *tlvs, u8 id, u8 role,
                                const char *subelems)
{
        u8 *len;
        const char *pos;
        int val;
        int count = 0;

        len = wpabuf_put(tlvs, 2);
        wpabuf_put_u8(tlvs, P2P_SERV_WIFI_DISPLAY); /* Service Protocol Type */
        wpabuf_put_u8(tlvs, id); /* Service Transaction ID */

        wpabuf_put_u8(tlvs, role);

        pos = subelems;
        while (*pos) {
                val = atoi(pos);
                if (val >= 0 && val < 256) {
                        wpabuf_put_u8(tlvs, val);
                        count++;
                        if (count == MAX_WFD_SD_SUBELEMS)
                                break;
                }
                pos = os_strchr(pos + 1, ',');
                if (pos == NULL)
                        break;
                pos++;
        }

        WPA_PUT_LE16(len, (u8 *) wpabuf_put(tlvs, 0) - len - 2);
}


u64 wpas_p2p_sd_request_wifi_display(struct wpa_supplicant *wpa_s,
                                     const u8 *dst, const char *role)
{
        struct wpabuf *tlvs;
        u64 ret;
        const char *subelems;
        u8 id = 1;

        subelems = os_strchr(role, ' ');
        if (subelems == NULL)
                return 0;
        subelems++;

        tlvs = wpabuf_alloc(4 * (2 + 1 + 1 + 1 + MAX_WFD_SD_SUBELEMS));
        if (tlvs == NULL)
                return 0;

        if (os_strstr(role, "[source]"))
                wfd_add_sd_req_role(tlvs, id++, 0x00, subelems);
        if (os_strstr(role, "[pri-sink]"))
                wfd_add_sd_req_role(tlvs, id++, 0x01, subelems);
        if (os_strstr(role, "[sec-sink]"))
                wfd_add_sd_req_role(tlvs, id++, 0x02, subelems);
        if (os_strstr(role, "[source+sink]"))
                wfd_add_sd_req_role(tlvs, id++, 0x03, subelems);

        ret = wpas_p2p_sd_request_wfd(wpa_s, dst, tlvs);
        wpabuf_free(tlvs);
        return ret;
}

#endif /* CONFIG_WIFI_DISPLAY */


int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, u64 req)
{
        if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
                return -1;
        return p2p_sd_cancel_request(wpa_s->global->p2p,
                                     (void *) (uintptr_t) req);
}


void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq,
                          const u8 *dst, u8 dialog_token,
                          const struct wpabuf *resp_tlvs)
{
        if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
                return;
        p2p_sd_response(wpa_s->global->p2p, freq, dst, dialog_token,
                        resp_tlvs);
}


void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s)
{
        if (wpa_s->global->p2p)
                p2p_sd_service_update(wpa_s->global->p2p);
}


static void wpas_p2p_srv_bonjour_free(struct p2p_srv_bonjour *bsrv)
{
        dl_list_del(&bsrv->list);
        wpabuf_free(bsrv->query);
        wpabuf_free(bsrv->resp);
        os_free(bsrv);
}


static void wpas_p2p_srv_upnp_free(struct p2p_srv_upnp *usrv)
{
        dl_list_del(&usrv->list);
        os_free(usrv->service);
        os_free(usrv);
}


void wpas_p2p_service_flush(struct wpa_supplicant *wpa_s)
{
        struct p2p_srv_bonjour *bsrv, *bn;
        struct p2p_srv_upnp *usrv, *un;

        dl_list_for_each_safe(bsrv, bn, &wpa_s->global->p2p_srv_bonjour,
                              struct p2p_srv_bonjour, list)
                wpas_p2p_srv_bonjour_free(bsrv);

        dl_list_for_each_safe(usrv, un, &wpa_s->global->p2p_srv_upnp,
                              struct p2p_srv_upnp, list)
                wpas_p2p_srv_upnp_free(usrv);

        wpas_p2p_sd_service_update(wpa_s);
}


int wpas_p2p_service_add_bonjour(struct wpa_supplicant *wpa_s,
                                 struct wpabuf *query, struct wpabuf *resp)
{
        struct p2p_srv_bonjour *bsrv;

        bsrv = os_zalloc(sizeof(*bsrv));
        if (bsrv == NULL)
                return -1;
        bsrv->query = query;
        bsrv->resp = resp;
        dl_list_add(&wpa_s->global->p2p_srv_bonjour, &bsrv->list);

        wpas_p2p_sd_service_update(wpa_s);
        return 0;
}


int wpas_p2p_service_del_bonjour(struct wpa_supplicant *wpa_s,
                                 const struct wpabuf *query)
{
        struct p2p_srv_bonjour *bsrv;

        bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
        if (bsrv == NULL)
                return -1;
        wpas_p2p_srv_bonjour_free(bsrv);
        wpas_p2p_sd_service_update(wpa_s);
        return 0;
}


int wpas_p2p_service_add_upnp(struct wpa_supplicant *wpa_s, u8 version,
                              const char *service)
{
        struct p2p_srv_upnp *usrv;

        if (wpas_p2p_service_get_upnp(wpa_s, version, service))
                return 0; /* Already listed */
        usrv = os_zalloc(sizeof(*usrv));
        if (usrv == NULL)
                return -1;
        usrv->version = version;
        usrv->service = os_strdup(service);
        if (usrv->service == NULL) {
                os_free(usrv);
                return -1;
        }
        dl_list_add(&wpa_s->global->p2p_srv_upnp, &usrv->list);

        wpas_p2p_sd_service_update(wpa_s);
        return 0;
}


int wpas_p2p_service_del_upnp(struct wpa_supplicant *wpa_s, u8 version,
                              const char *service)
{
        struct p2p_srv_upnp *usrv;

        usrv = wpas_p2p_service_get_upnp(wpa_s, version, service);
        if (usrv == NULL)
                return -1;
        wpas_p2p_srv_upnp_free(usrv);
        wpas_p2p_sd_service_update(wpa_s);
        return 0;
}


static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
                                         const u8 *peer, const char *params,
                                         unsigned int generated_pin)
{
        wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
                       " %08d%s", MAC2STR(peer), generated_pin, params);
}


static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
                                        const u8 *peer, const char *params)
{
        wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
                       "%s", MAC2STR(peer), params);
}


static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
                               const u8 *dev_addr, const u8 *pri_dev_type,
                               const char *dev_name, u16 supp_config_methods,
                               u8 dev_capab, u8 group_capab, const u8 *group_id,
                               size_t group_id_len)
{
        struct wpa_supplicant *wpa_s = ctx;
        char devtype[WPS_DEV_TYPE_BUFSIZE];
        char params[300];
        u8 empty_dev_type[8];
        unsigned int generated_pin = 0;
        struct wpa_supplicant *group = NULL;

        if (group_id) {
                for (group = wpa_s->global->ifaces; group; group = group->next)
                {
                        struct wpa_ssid *s = group->current_ssid;
                        if (s != NULL &&
                            s->mode == WPAS_MODE_P2P_GO &&
                            group_id_len - ETH_ALEN == s->ssid_len &&
                            os_memcmp(group_id + ETH_ALEN, s->ssid,
                                      s->ssid_len) == 0)
                                break;
                }
        }

        if (pri_dev_type == NULL) {
                os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
                pri_dev_type = empty_dev_type;
        }
        os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
                    " pri_dev_type=%s name='%s' config_methods=0x%x "
                    "dev_capab=0x%x group_capab=0x%x%s%s",
                    MAC2STR(dev_addr),
                    wps_dev_type_bin2str(pri_dev_type, devtype,
                                         sizeof(devtype)),
                    dev_name, supp_config_methods, dev_capab, group_capab,
                    group ? " group=" : "",
                    group ? group->ifname : "");
        params[sizeof(params) - 1] = '\0';

        if (config_methods & WPS_CONFIG_DISPLAY) {
                generated_pin = wps_generate_pin();
                wpas_prov_disc_local_display(wpa_s, peer, params,
                                             generated_pin);
        } else if (config_methods & WPS_CONFIG_KEYPAD)
                wpas_prov_disc_local_keypad(wpa_s, peer, params);
        else if (config_methods & WPS_CONFIG_PUSHBUTTON)
                wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
                               MACSTR "%s", MAC2STR(peer), params);

        wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
                                            P2P_PROV_DISC_SUCCESS,
                                            config_methods, generated_pin);
}


static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
{
        struct wpa_supplicant *wpa_s = ctx;
        unsigned int generated_pin = 0;
        char params[20];

        if (wpa_s->pending_pd_before_join &&
            (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
             os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
                wpa_s->pending_pd_before_join = 0;
                wpa_printf(MSG_DEBUG, "P2P: Starting pending "
                           "join-existing-group operation");
                wpas_p2p_join_start(wpa_s, 0, NULL, 0);
                return;
        }

        if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
            wpa_s->pending_pd_use == AUTO_PD_GO_NEG)
                os_snprintf(params, sizeof(params), " peer_go=%d",
                            wpa_s->pending_pd_use == AUTO_PD_JOIN);
        else
                params[0] = '\0';

        if (config_methods & WPS_CONFIG_DISPLAY)
                wpas_prov_disc_local_keypad(wpa_s, peer, params);
        else if (config_methods & WPS_CONFIG_KEYPAD) {
                generated_pin = wps_generate_pin();
                wpas_prov_disc_local_display(wpa_s, peer, params,
                                             generated_pin);
        } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
                wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
                               MACSTR "%s", MAC2STR(peer), params);

        wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
                                            P2P_PROV_DISC_SUCCESS,
                                            config_methods, generated_pin);
}


static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
                                enum p2p_prov_disc_status status)
{
        struct wpa_supplicant *wpa_s = ctx;

        if (wpa_s->p2p_fallback_to_go_neg) {
                wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
                        "failed - fall back to GO Negotiation");
                wpas_p2p_fallback_to_go_neg(wpa_s, 0);
                return;
        }

        if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
                wpa_s->pending_pd_before_join = 0;
                wpa_printf(MSG_DEBUG, "P2P: Starting pending "
                           "join-existing-group operation (no ACK for PD "
                           "Req attempts)");
                wpas_p2p_join_start(wpa_s, 0, NULL, 0);
                return;
        }

        wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
                       " p2p_dev_addr=" MACSTR " status=%d",
                       MAC2STR(peer), status);

        wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
                                            status, 0, 0);
}


static int freq_included(const struct p2p_channels *channels, unsigned int freq)
{
        if (channels == NULL)
                return 1; /* Assume no restrictions */
        return p2p_channels_includes_freq(channels, freq);

}


/**
 * Pick the best frequency to use from all the currently used frequencies.
 */
static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s,
                                        struct wpa_used_freq_data *freqs,
                                        unsigned int num)
{
        unsigned int i, c;

        /* find a candidate freq that is supported by P2P */
        for (c = 0; c < num; c++)
                if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq))
                        break;

        if (c == num)
                return 0;

        /* once we have a candidate, try to find a 'better' one */
        for (i = c + 1; i < num; i++) {
                if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
                        continue;

                /*
                 * 1. Infrastructure station interfaces have higher preference.
                 * 2. P2P Clients have higher preference.
                 * 3. All others.
                 */
                if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) {
                        c = i;
                        break;
                }

                if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT))
                        c = i;
        }
        return freqs[c].freq;
}


static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
                                  const u8 *go_dev_addr, const u8 *ssid,
                                  size_t ssid_len, int *go, u8 *group_bssid,
                                  int *force_freq, int persistent_group,
                                  const struct p2p_channels *channels,
                                  int dev_pw_id)
{
        struct wpa_supplicant *wpa_s = ctx;
        struct wpa_ssid *s;
        struct wpa_used_freq_data *freqs;
        struct wpa_supplicant *grp;
        int best_freq;

        if (!persistent_group) {
                wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
                           " to join an active group (SSID: %s)",
                           MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
                if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
                    (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
                     == 0 ||
                     os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
                        wpa_printf(MSG_DEBUG, "P2P: Accept previously "
                                   "authorized invitation");
                        goto accept_inv;
                }

#ifdef CONFIG_WPS_NFC
                if (dev_pw_id >= 0 && wpa_s->parent->p2p_nfc_tag_enabled &&
                    dev_pw_id == wpa_s->parent->p2p_oob_dev_pw_id) {
                        wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
                        wpa_s->parent->p2p_wps_method = WPS_NFC;
                        wpa_s->parent->pending_join_wps_method = WPS_NFC;
                        os_memcpy(wpa_s->parent->pending_join_dev_addr,
                                  go_dev_addr, ETH_ALEN);
                        os_memcpy(wpa_s->parent->pending_join_iface_addr,
                                  bssid, ETH_ALEN);
                        goto accept_inv;
                }
#endif /* CONFIG_WPS_NFC */

                /*
                 * Do not accept the invitation automatically; notify user and
                 * request approval.
                 */
                return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
        }

        grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
        if (grp) {
                wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
                           "running persistent group");
                if (*go)
                        os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
                goto accept_inv;
        }

        if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
            os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
                wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
                           "invitation to re-invoke a persistent group");
                os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
        } else if (!wpa_s->conf->persistent_reconnect)
                return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;

        for (s = wpa_s->conf->ssid; s; s = s->next) {
                if (s->disabled == 2 &&
                    os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
                    s->ssid_len == ssid_len &&
                    os_memcmp(ssid, s->ssid, ssid_len) == 0)
                        break;
        }

        if (!s) {
                wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
                           " requested reinvocation of an unknown group",
                           MAC2STR(sa));
                return P2P_SC_FAIL_UNKNOWN_GROUP;
        }

        if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
                *go = 1;
                if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
                        wpa_printf(MSG_DEBUG, "P2P: The only available "
                                   "interface is already in use - reject "
                                   "invitation");
                        return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
                }
                os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
        } else if (s->mode == WPAS_MODE_P2P_GO) {
                *go = 1;
                if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
                {
                        wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
                                   "interface address for the group");
                        return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
                }
                os_memcpy(group_bssid, wpa_s->pending_interface_addr,
                          ETH_ALEN);
        }

accept_inv:
        wpas_p2p_set_own_freq_preference(wpa_s, 0);

        best_freq = 0;
        freqs = os_calloc(wpa_s->num_multichan_concurrent,
                          sizeof(struct wpa_used_freq_data));
        if (freqs) {
                int num_channels = wpa_s->num_multichan_concurrent;
                int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels);
                best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
                os_free(freqs);
        }

        /* Get one of the frequencies currently in use */
        if (best_freq > 0) {
                wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
                wpas_p2p_set_own_freq_preference(wpa_s, best_freq);

                if (wpa_s->num_multichan_concurrent < 2 ||
                    wpas_p2p_num_unused_channels(wpa_s) < 1) {
                        wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
                        *force_freq = best_freq;
                }
        }

        if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
            wpas_p2p_num_unused_channels(wpa_s) > 0) {
                if (*go == 0) {
                        /* We are the client */
                        wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
                                   "running a GO but we are capable of MCC, "
                                   "figure out the best channel to use");
                        *force_freq = 0;
                } else if (!freq_included(channels, *force_freq)) {
                        /* We are the GO, and *force_freq is not in the
                         * intersection */
                        wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
                                   "in intersection but we are capable of MCC, "
                                   "figure out the best channel to use",
                                   *force_freq);
                        *force_freq = 0;
                }
        }

        return P2P_SC_SUCCESS;
}


static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
                                     const u8 *ssid, size_t ssid_len,
                                     const u8 *go_dev_addr, u8 status,
                                     int op_freq)
{
        struct wpa_supplicant *wpa_s = ctx;
        struct wpa_ssid *s;

        for (s = wpa_s->conf->ssid; s; s = s->next) {
                if (s->disabled == 2 &&
                    s->ssid_len == ssid_len &&
                    os_memcmp(ssid, s->ssid, ssid_len) == 0)
                        break;
        }

        if (status == P2P_SC_SUCCESS) {
                wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
                           " was accepted; op_freq=%d MHz, SSID=%s",
                           MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
                if (s) {
                        int go = s->mode == WPAS_MODE_P2P_GO;
                        wpas_p2p_group_add_persistent(
                                wpa_s, s, go, 0, op_freq, 0, 0, NULL,
                                go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0);
                } else if (bssid) {
                        wpa_s->user_initiated_pd = 0;
                        wpas_p2p_join(wpa_s, bssid, go_dev_addr,
                                      wpa_s->p2p_wps_method, 0, op_freq,
                                      ssid, ssid_len);
                }
                return;
        }

        if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
                wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
                           " was rejected (status %u)", MAC2STR(sa), status);
                return;
        }

        if (!s) {
                if (bssid) {
                        wpa_msg_global(wpa_s, MSG_INFO,
                                       P2P_EVENT_INVITATION_RECEIVED
                                       "sa=" MACSTR " go_dev_addr=" MACSTR
                                       " bssid=" MACSTR " unknown-network",
                                       MAC2STR(sa), MAC2STR(go_dev_addr),
                                       MAC2STR(bssid));
                } else {
                        wpa_msg_global(wpa_s, MSG_INFO,
                                       P2P_EVENT_INVITATION_RECEIVED
                                       "sa=" MACSTR " go_dev_addr=" MACSTR
                                       " unknown-network",
                                       MAC2STR(sa), MAC2STR(go_dev_addr));
                }
                return;
        }

        if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
                wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
                               "sa=" MACSTR " persistent=%d freq=%d",
                               MAC2STR(sa), s->id, op_freq);
        } else {
                wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
                               "sa=" MACSTR " persistent=%d",
                               MAC2STR(sa), s->id);
        }
}


static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
                                        struct wpa_ssid *ssid,
                                        const u8 *peer, int inv)
{
        size_t i;

        if (ssid == NULL)
                return;

        for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
                if (os_memcmp(ssid->p2p_client_list + i * ETH_ALEN, peer,
                              ETH_ALEN) == 0)
                        break;
        }
        if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) {
                if (ssid->mode != WPAS_MODE_P2P_GO &&
                    os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
                        wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
                                   "due to invitation result", ssid->id);
                        wpas_notify_network_removed(wpa_s, ssid);
                        wpa_config_remove_network(wpa_s->conf, ssid->id);
                        return;
                }
                return; /* Peer not found in client list */
        }

        wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
                   "group %d client list%s",
                   MAC2STR(peer), ssid->id,
                   inv ? " due to invitation result" : "");
        os_memmove(ssid->p2p_client_list + i * ETH_ALEN,
                   ssid->p2p_client_list + (i + 1) * ETH_ALEN,
                   (ssid->num_p2p_clients - i - 1) * ETH_ALEN);
        ssid->num_p2p_clients--;
        if (wpa_s->parent->conf->update_config &&
            wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
                wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
}


static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
                                          const u8 *peer)
{
        struct wpa_ssid *ssid;

        wpa_s = wpa_s->global->p2p_invite_group;
        if (wpa_s == NULL)
                return; /* No known invitation group */
        ssid = wpa_s->current_ssid;
        if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
            !ssid->p2p_persistent_group)
                return; /* Not operating as a GO in persistent group */
        ssid = wpas_p2p_get_persistent(wpa_s->parent, peer,
                                       ssid->ssid, ssid->ssid_len);
        wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
}


static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
                                   const struct p2p_channels *channels,
                                   const u8 *peer, int neg_freq,
                                   int peer_oper_freq)
{
        struct wpa_supplicant *wpa_s = ctx;
        struct wpa_ssid *ssid;
        int freq;

        if (bssid) {
                wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
                               "status=%d " MACSTR,
                               status, MAC2STR(bssid));
        } else {
                wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
                               "status=%d ", status);
        }
        wpas_notify_p2p_invitation_result(wpa_s, status, bssid);

        wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
                   status, MAC2STR(peer));
        if (wpa_s->pending_invite_ssid_id == -1) {
                if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
                        wpas_remove_persistent_client(wpa_s, peer);
                return; /* Invitation to active group */
        }

        if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
                wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
                           "invitation exchange to indicate readiness for "
                           "re-invocation");
        }

        if (status != P2P_SC_SUCCESS) {
                if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
                        ssid = wpa_config_get_network(
                                wpa_s->conf, wpa_s->pending_invite_ssid_id);
                        wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
                }
                wpas_p2p_remove_pending_group_interface(wpa_s);
                return;
        }

        ssid = wpa_config_get_network(wpa_s->conf,
                                      wpa_s->pending_invite_ssid_id);
        if (ssid == NULL) {
                wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
                           "data matching with invitation");
                return;
        }

        /*
         * The peer could have missed our ctrl::ack frame for Invitation
         * Response and continue retransmitting the frame. To reduce the
         * likelihood of the peer not getting successful TX status for the
         * Invitation Response frame, wait a short time here before starting
         * the persistent group so that we will remain on the current channel to
         * acknowledge any possible retransmission from the peer.
         */
        wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
                "starting persistent group");
        os_sleep(0, 50000);

        if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
            freq_included(channels, neg_freq))
                freq = neg_freq;
        else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
                 freq_included(channels, peer_oper_freq))
                freq = peer_oper_freq;
        else
                freq = 0;

        wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
                   freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
        wpas_p2p_group_add_persistent(wpa_s, ssid,
                                      ssid->mode == WPAS_MODE_P2P_GO,
                                      wpa_s->p2p_persistent_go_freq,
                                      freq,
                                      wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
                                      channels,
                                      ssid->mode == WPAS_MODE_P2P_GO ?
                                      P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
                                      0);
}


static int wpas_p2p_disallowed_freq(struct wpa_global *global,
                                    unsigned int freq)
{
        if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
                return 1;
        return freq_range_list_includes(&global->p2p_disallow_freq, freq);
}


static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
{
        reg->channel[reg->channels] = chan;
        reg->channels++;
}


static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
                                     struct p2p_channels *chan,
                                     struct p2p_channels *cli_chan)
{
        int i, cla = 0;

        wpa_s->global->p2p_24ghz_social_channels = 1;

        os_memset(cli_chan, 0, sizeof(*cli_chan));

        wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
                   "band");

        /* Operating class 81 - 2.4 GHz band channels 1..13 */
        chan->reg_class[cla].reg_class = 81;
        chan->reg_class[cla].channels = 0;
        for (i = 0; i < 11; i++) {
                if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
                        wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
        }
        if (chan->reg_class[cla].channels)
                cla++;

        wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
                   "band");

        /* Operating class 115 - 5 GHz, channels 36-48 */
        chan->reg_class[cla].reg_class = 115;
        chan->reg_class[cla].channels = 0;
        if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
                wpas_p2p_add_chan(&chan->reg_class[cla], 36);
        if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
                wpas_p2p_add_chan(&chan->reg_class[cla], 40);
        if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
                wpas_p2p_add_chan(&chan->reg_class[cla], 44);
        if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
                wpas_p2p_add_chan(&chan->reg_class[cla], 48);
        if (chan->reg_class[cla].channels)
                cla++;

        wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
                   "band");

        /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
        chan->reg_class[cla].reg_class = 124;
        chan->reg_class[cla].channels = 0;
        if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
                wpas_p2p_add_chan(&chan->reg_class[cla], 149);
        if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
                wpas_p2p_add_chan(&chan->reg_class[cla], 153);
        if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
                wpas_p2p_add_chan(&chan->reg_class[cla], 157);
        if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
                wpas_p2p_add_chan(&chan->reg_class[cla], 161);
        if (chan->reg_class[cla].channels)
                cla++;

        chan->reg_classes = cla;
        return 0;
}


static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
                                          u16 num_modes,
                                          enum hostapd_hw_mode mode)
{
        u16 i;

        for (i = 0; i < num_modes; i++) {
                if (modes[i].mode == mode)
                        return &modes[i];
        }

        return NULL;
}


enum chan_allowed {
        NOT_ALLOWED, NO_IR, ALLOWED
};

static int has_channel(struct wpa_global *global,
                       struct hostapd_hw_modes *mode, u8 chan, int *flags)
{
        int i;
        unsigned int freq;

        freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
                chan * 5;
        if (wpas_p2p_disallowed_freq(global, freq))
                return NOT_ALLOWED;

        for (i = 0; i < mode->num_channels; i++) {
                if (mode->channels[i].chan == chan) {
                        if (flags)
                                *flags = mode->channels[i].flag;
                        if (mode->channels[i].flag &
                            (HOSTAPD_CHAN_DISABLED |
                             HOSTAPD_CHAN_RADAR))
                                return NOT_ALLOWED;
                        if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR)
                                return NO_IR;
                        return ALLOWED;
                }
        }

        return NOT_ALLOWED;
}


struct p2p_oper_class_map {
        enum hostapd_hw_mode mode;
        u8 op_class;
        u8 min_chan;
        u8 max_chan;
        u8 inc;
        enum { BW20, BW40PLUS, BW40MINUS, BW80, BW2160 } bw;
};

static struct p2p_oper_class_map op_class[] = {
        { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
#if 0 /* Do not enable HT40 on 2 GHz for now */
        { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
        { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
#endif
        { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
        { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
        { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
        { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
        { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
        { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },

        /*
         * IEEE P802.11ac/D7.0 Table E-4 actually talks about channel center
         * frequency index 42, 58, 106, 122, 138, 155 with channel spacing of
         * 80 MHz, but currently use the following definition for simplicity
         * (these center frequencies are not actual channels, which makes
         * has_channel() fail). wpas_p2p_verify_80mhz() should take care of
         * removing invalid channels.
         */
        { HOSTAPD_MODE_IEEE80211A, 128, 36, 161, 4, BW80 },
        { HOSTAPD_MODE_IEEE80211AD, 180, 1, 4, 1, BW2160 },
        { -1, 0, 0, 0, 0, BW20 }
};


static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
                                     struct hostapd_hw_modes *mode,
                                     u8 channel)
{
        u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
        unsigned int i;

        if (mode->mode != HOSTAPD_MODE_IEEE80211A)
                return 0;

        for (i = 0; i < ARRAY_SIZE(center_channels); i++)
                /*
                 * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
                 * so the center channel is 6 channels away from the start/end.
                 */
                if (channel >= center_channels[i] - 6 &&
                    channel <= center_channels[i] + 6)
                        return center_channels[i];

        return 0;
}


static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
                                               struct hostapd_hw_modes *mode,
                                               u8 channel, u8 bw)
{
        u8 center_chan;
        int i, flags;
        enum chan_allowed res, ret = ALLOWED;

        center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
        if (!center_chan)
                return NOT_ALLOWED;
        if (center_chan >= 58 && center_chan <= 138)
                return NOT_ALLOWED; /* Do not allow DFS channels for P2P */

        /* check all the channels are available */
        for (i = 0; i < 4; i++) {
                int adj_chan = center_chan - 6 + i * 4;

                res = has_channel(wpa_s->global, mode, adj_chan, &flags);
                if (res == NOT_ALLOWED)
                        return NOT_ALLOWED;
                if (res == NO_IR)
                        ret = NO_IR;

                if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
                        return NOT_ALLOWED;
                if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
                        return NOT_ALLOWED;
                if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
                        return NOT_ALLOWED;
                if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
                        return NOT_ALLOWED;
        }

        return ret;
}


static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
                                                 struct hostapd_hw_modes *mode,
                                                 u8 channel, u8 bw)
{
        int flag = 0;
        enum chan_allowed res, res2;

        res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
        if (bw == BW40MINUS) {
                if (!(flag & HOSTAPD_CHAN_HT40MINUS))
                        return NOT_ALLOWED;
                res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
        } else if (bw == BW40PLUS) {
                if (!(flag & HOSTAPD_CHAN_HT40PLUS))
                        return NOT_ALLOWED;
                res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
        } else if (bw == BW80) {
                res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
        }

        if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
                return NOT_ALLOWED;
        if (res == NO_IR || res2 == NO_IR)
                return NO_IR;
        return res;
}


static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
                                   struct p2p_channels *chan,
                                   struct p2p_channels *cli_chan)
{
        struct hostapd_hw_modes *mode;
        int cla, op, cli_cla;

        if (wpa_s->hw.modes == NULL) {
                wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
                           "of all supported channels; assume dualband "
                           "support");
                return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
        }

        cla = cli_cla = 0;

        for (op = 0; op_class[op].op_class; op++) {
                struct p2p_oper_class_map *o = &op_class[op];
                u8 ch;
                struct p2p_reg_class *reg = NULL, *cli_reg = NULL;

                mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
                if (mode == NULL)
                        continue;
                if (mode->mode == HOSTAPD_MODE_IEEE80211G)
                        wpa_s->global->p2p_24ghz_social_channels = 1;
                for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
                        enum chan_allowed res;
                        res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
                        if (res == ALLOWED) {
                                if (reg == NULL) {
                                        wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
                                                   o->op_class);
                                        reg = &chan->reg_class[cla];
                                        cla++;
                                        reg->reg_class = o->op_class;
                                }
                                reg->channel[reg->channels] = ch;
                                reg->channels++;
                        } else if (res == NO_IR &&
                                   wpa_s->conf->p2p_add_cli_chan) {
                                if (cli_reg == NULL) {
                                        wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
                                                   o->op_class);
                                        cli_reg = &cli_chan->reg_class[cli_cla];
                                        cli_cla++;
                                        cli_reg->reg_class = o->op_class;
                                }
                                cli_reg->channel[cli_reg->channels] = ch;
                                cli_reg->channels++;
                        }
                }
                if (reg) {
                        wpa_hexdump(MSG_DEBUG, "P2P: Channels",
                                    reg->channel, reg->channels);
                }
                if (cli_reg) {
                        wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
                                    cli_reg->channel, cli_reg->channels);
                }
        }

        chan->reg_classes = cla;
        cli_chan->reg_classes = cli_cla;

        return 0;
}


int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
                           struct hostapd_hw_modes *mode, u8 channel)
{
        int op;
        enum chan_allowed ret;

        for (op = 0; op_class[op].op_class; op++) {
                struct p2p_oper_class_map *o = &op_class[op];
                u8 ch;

                for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
                        if (o->mode != HOSTAPD_MODE_IEEE80211A ||
                            o->bw == BW20 || ch != channel)
                                continue;
                        ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
                        if (ret == ALLOWED)
                                return (o->bw == BW40MINUS) ? -1 : 1;
                }
        }
        return 0;
}


int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
                              struct hostapd_hw_modes *mode, u8 channel)
{
        if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
                return 0;

        return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
}


static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
                        size_t buf_len)
{
        struct wpa_supplicant *wpa_s = ctx;

        for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
                if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
                        break;
        }
        if (wpa_s == NULL)
                return -1;

        return wpa_drv_get_noa(wpa_s, buf, buf_len);
}


struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s,
                                              const u8 *ssid, size_t ssid_len)
{
        for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
                struct wpa_ssid *s = wpa_s->current_ssid;
                if (s == NULL)
                        continue;
                if (s->mode != WPAS_MODE_P2P_GO &&
                    s->mode != WPAS_MODE_AP &&
                    s->mode != WPAS_MODE_P2P_GROUP_FORMATION)
                        continue;
                if (s->ssid_len != ssid_len ||
                    os_memcmp(ssid, s->ssid, ssid_len) != 0)
                        continue;
                return wpa_s;
        }

        return NULL;

}


struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s,
                                                  const u8 *peer_dev_addr)
{
        for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
                struct wpa_ssid *ssid = wpa_s->current_ssid;
                if (ssid == NULL)
                        continue;
                if (ssid->mode != WPAS_MODE_INFRA)
                        continue;
                if (wpa_s->wpa_state != WPA_COMPLETED &&
                    wpa_s->wpa_state != WPA_GROUP_HANDSHAKE)
                        continue;
                if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0)
                        return wpa_s;
        }

        return NULL;
}


static int wpas_go_connected(void *ctx, const u8 *dev_addr)
{
        struct wpa_supplicant *wpa_s = ctx;

        return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL;
}


static int wpas_is_concurrent_session_active(void *ctx)
{
        struct wpa_supplicant *wpa_s = ctx;
        struct wpa_supplicant *ifs;

        for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
                if (ifs == wpa_s)
                        continue;
                if (ifs->wpa_state > WPA_ASSOCIATED)
                        return 1;
        }
        return 0;
}


static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
{
        struct wpa_supplicant *wpa_s = ctx;
        wpa_msg_global(wpa_s, level, "P2P: %s", msg);
}


int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s,
                                  const char *conf_p2p_dev)
{
        struct wpa_interface iface;
        struct wpa_supplicant *p2pdev_wpa_s;
        char ifname[100];
        char force_name[100];
        int ret;

        os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
                    wpa_s->ifname);
        force_name[0] = '\0';
        wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
        ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
                             force_name, wpa_s->pending_interface_addr, NULL);
        if (ret < 0) {
                wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
                return ret;
        }
        os_strlcpy(wpa_s->pending_interface_name, ifname,
                   sizeof(wpa_s->pending_interface_name));

        os_memset(&iface, 0, sizeof(iface));
        iface.p2p_mgmt = 1;
        iface.ifname = wpa_s->pending_interface_name;
        iface.driver = wpa_s->driver->name;
        iface.driver_param = wpa_s->conf->driver_param;

        /*
         * If a P2P Device configuration file was given, use it as the interface
         * configuration file (instead of using parent's configuration file.
         */
        if (conf_p2p_dev) {
                iface.confname = conf_p2p_dev;
                iface.ctrl_interface = NULL;
        } else {
                iface.confname = wpa_s->confname;
                iface.ctrl_interface = wpa_s->conf->ctrl_interface;
        }
        iface.conf_p2p_dev = NULL;

        p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
        if (!p2pdev_wpa_s) {
                wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
                return -1;
        }
        p2pdev_wpa_s->parent = wpa_s;
        wpa_s->p2p_dev = p2pdev_wpa_s;

        wpa_s->pending_interface_name[0] = '\0';
        return 0;
}


static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
                               const u8 *noa, size_t noa_len)
{
        struct wpa_supplicant *wpa_s, *intf = ctx;
        char hex[100];

        for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
                if (wpa_s->waiting_presence_resp)
                        break;
        }
        if (!wpa_s) {
                wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
                return;
        }
        wpa_s->waiting_presence_resp = 0;

        wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
        wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
                " status=%u noa=%s", MAC2STR(src), status, hex);
}


static int _wpas_p2p_in_progress(void *ctx)
{
        struct wpa_supplicant *wpa_s = ctx;
        return wpas_p2p_in_progress(wpa_s);
}


/**
 * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
 * @global: Pointer to global data from wpa_supplicant_init()
 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
 * Returns: 0 on success, -1 on failure
 */
int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
{
        struct p2p_config p2p;
        int i;

        if (wpa_s->conf->p2p_disabled)
                return 0;

        if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
                return 0;

        if (global->p2p)
                return 0;

        os_memset(&p2p, 0, sizeof(p2p));
        p2p.cb_ctx = wpa_s;
        p2p.debug_print = wpas_p2p_debug_print;
        p2p.p2p_scan = wpas_p2p_scan;
        p2p.send_action = wpas_send_action;
        p2p.send_action_done = wpas_send_action_done;
        p2p.go_neg_completed = wpas_go_neg_completed;
        p2p.go_neg_req_rx = wpas_go_neg_req_rx;
        p2p.dev_found = wpas_dev_found;
        p2p.dev_lost = wpas_dev_lost;
        p2p.find_stopped = wpas_find_stopped;
        p2p.start_listen = wpas_start_listen;
        p2p.stop_listen = wpas_stop_listen;
        p2p.send_probe_resp = wpas_send_probe_resp;
        p2p.sd_request = wpas_sd_request;
        p2p.sd_response = wpas_sd_response;
        p2p.prov_disc_req = wpas_prov_disc_req;
        p2p.prov_disc_resp = wpas_prov_disc_resp;
        p2p.prov_disc_fail = wpas_prov_disc_fail;
        p2p.invitation_process = wpas_invitation_process;
        p2p.invitation_received = wpas_invitation_received;
        p2p.invitation_result = wpas_invitation_result;
        p2p.get_noa = wpas_get_noa;
        p2p.go_connected = wpas_go_connected;
        p2p.presence_resp = wpas_presence_resp;
        p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
        p2p.is_p2p_in_progress = _wpas_p2p_in_progress;

        os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
        os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
        p2p.dev_name = wpa_s->conf->device_name;
        p2p.manufacturer = wpa_s->conf->manufacturer;
        p2p.model_name = wpa_s->conf->model_name;
        p2p.model_number = wpa_s->conf->model_number;
        p2p.serial_number = wpa_s->conf->serial_number;
        if (wpa_s->wps) {
                os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
                p2p.config_methods = wpa_s->wps->config_methods;
        }

        if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
                wpa_printf(MSG_ERROR,
                           "P2P: Failed to configure supported channel list");
                return -1;
        }

        if (wpa_s->conf->p2p_listen_reg_class &&
            wpa_s->conf->p2p_listen_channel) {
                p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
                p2p.channel = wpa_s->conf->p2p_listen_channel;
                p2p.channel_forced = 1;
        } else {
                /*
                 * Pick one of the social channels randomly as the listen
                 * channel.
                 */
                if (p2p_config_get_random_social(&p2p, &p2p.reg_class,
                                                 &p2p.channel) != 0) {
                        wpa_printf(MSG_ERROR,
                                   "P2P: Failed to select random social channel as listen channel");
                        return -1;
                }
                p2p.channel_forced = 0;
        }
        wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d",
                   p2p.reg_class, p2p.channel);

        if (wpa_s->conf->p2p_oper_reg_class &&
            wpa_s->conf->p2p_oper_channel) {
                p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
                p2p.op_channel = wpa_s->conf->p2p_oper_channel;
                p2p.cfg_op_channel = 1;
                wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
                           "%d:%d", p2p.op_reg_class, p2p.op_channel);

        } else {
                /*
                 * Use random operation channel from 2.4 GHz band social
                 * channels (1, 6, 11) or band 60 GHz social channel (2) if no
                 * other preference is indicated.
                 */
                if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class,
                                                 &p2p.op_channel) != 0) {
                        wpa_printf(MSG_ERROR,
                                   "P2P: Failed to select random social channel as operation channel");
                        return -1;
                }
                p2p.cfg_op_channel = 0;
                wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
                           "%d:%d", p2p.op_reg_class, p2p.op_channel);
        }

        if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
                p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
                p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
        }

        if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
                os_memcpy(p2p.country, wpa_s->conf->country, 2);
                p2p.country[2] = 0x04;
        } else
                os_memcpy(p2p.country, "XX\x04", 3);

        os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
                  WPS_DEV_TYPE_LEN);

        p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
        os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
                  p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);

        p2p.concurrent_operations = !!(wpa_s->drv_flags &
                                       WPA_DRIVER_FLAGS_P2P_CONCURRENT);

        p2p.max_peers = 100;

        if (wpa_s->conf->p2p_ssid_postfix) {
                p2p.ssid_postfix_len =
                        os_strlen(wpa_s->conf->p2p_ssid_postfix);
                if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
                        p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
                os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
                          p2p.ssid_postfix_len);
        }

        p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;

        p2p.max_listen = wpa_s->max_remain_on_chan;

        if (wpa_s->conf->p2p_passphrase_len >= 8 &&
            wpa_s->conf->p2p_passphrase_len <= 63)
                p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len;
        else
                p2p.passphrase_len = 8;

        global->p2p = p2p_init(&p2p);
        if (global->p2p == NULL)
                return -1;
        global->p2p_init_wpa_s = wpa_s;

        for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
                if (wpa_s->conf->wps_vendor_ext[i] == NULL)
                        continue;
                p2p_add_wps_vendor_extension(
                        global->p2p, wpa_s->conf->wps_vendor_ext[i]);
        }

        p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);

        return 0;
}


/**
 * wpas_p2p_deinit - Deinitialize per-interface P2P data
 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
 *
 * This function deinitialize per-interface P2P data.
 */
void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
{
        if (wpa_s->driver && wpa_s->drv_priv)
                wpa_drv_probe_req_report(wpa_s, 0);

        if (wpa_s->go_params) {
                /* Clear any stored provisioning info */
                p2p_clear_provisioning_info(
                        wpa_s->global->p2p,
                        wpa_s->go_params->peer_device_addr);
        }

        os_free(wpa_s->go_params);
        wpa_s->go_params = NULL;
        eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
        eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
        eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
        wpa_s->p2p_long_listen = 0;
        eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
        eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
        wpas_p2p_remove_pending_group_interface(wpa_s);
        eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
        wpas_p2p_listen_work_done(wpa_s);
        if (wpa_s->p2p_send_action_work) {
                os_free(wpa_s->p2p_send_action_work->ctx);
                radio_work_done(wpa_s->p2p_send_action_work);
                wpa_s->p2p_send_action_work = NULL;
        }
        eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);

        wpabuf_free(wpa_s->p2p_oob_dev_pw);
        wpa_s->p2p_oob_dev_pw = NULL;

        os_free(wpa_s->p2p_group_common_freqs);
        wpa_s->p2p_group_common_freqs = NULL;
        wpa_s->p2p_group_common_freqs_num = 0;

        /* TODO: remove group interface from the driver if this wpa_s instance
         * is on top of a P2P group interface */
}


/**
 * wpas_p2p_deinit_global - Deinitialize global P2P module
 * @global: Pointer to global data from wpa_supplicant_init()
 *
 * This function deinitializes the global (per device) P2P module.
 */
static void wpas_p2p_deinit_global(struct wpa_global *global)
{
        struct wpa_supplicant *wpa_s, *tmp;

        wpa_s = global->ifaces;

        wpas_p2p_service_flush(global->p2p_init_wpa_s);

        /* Remove remaining P2P group interfaces */
        while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
                wpa_s = wpa_s->next;
        while (wpa_s) {
                tmp = global->ifaces;
                while (tmp &&
                       (tmp == wpa_s ||
                        tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
                        tmp = tmp->next;
                }
                if (tmp == NULL)
                        break;
                /* Disconnect from the P2P group and deinit the interface */
                wpas_p2p_disconnect(tmp);
        }

        /*
         * Deinit GO data on any possibly remaining interface (if main
         * interface is used as GO).
         */
        for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
                if (wpa_s->ap_iface)
                        wpas_p2p_group_deinit(wpa_s);
        }

        p2p_deinit(global->p2p);
        global->p2p = NULL;
        global->p2p_init_wpa_s = NULL;
}


static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
{
        if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
            wpa_s->conf->p2p_no_group_iface)
                return 0; /* separate interface disabled per configuration */
        if (wpa_s->drv_flags &
            (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
             WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
                return 1; /* P2P group requires a new interface in every case
                           */
        if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
                return 0; /* driver does not support concurrent operations */
        if (wpa_s->global->ifaces->next)
                return 1; /* more that one interface already in use */
        if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
                return 1; /* this interface is already in use */
        return 0;
}


static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
                                 const u8 *peer_addr,
                                 enum p2p_wps_method wps_method,
                                 int go_intent, const u8 *own_interface_addr,
                                 unsigned int force_freq, int persistent_group,
                                 struct wpa_ssid *ssid, unsigned int pref_freq)
{
        if (persistent_group && wpa_s->conf->persistent_reconnect)
                persistent_group = 2;

        /*
         * Increase GO config timeout if HT40 is used since it takes some time
         * to scan channels for coex purposes before the BSS can be started.
         */
        p2p_set_config_timeout(wpa_s->global->p2p,
                               wpa_s->p2p_go_ht40 ? 255 : 100, 20);

        return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
                           go_intent, own_interface_addr, force_freq,
                           persistent_group, ssid ? ssid->ssid : NULL,
                           ssid ? ssid->ssid_len : 0,
                           wpa_s->p2p_pd_before_go_neg, pref_freq,
                           wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
                           0);
}


static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
                                const u8 *peer_addr,
                                enum p2p_wps_method wps_method,
                                int go_intent, const u8 *own_interface_addr,
                                unsigned int force_freq, int persistent_group,
                                struct wpa_ssid *ssid, unsigned int pref_freq)
{
        if (persistent_group && wpa_s->conf->persistent_reconnect)
                persistent_group = 2;

        return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
                             go_intent, own_interface_addr, force_freq,
                             persistent_group, ssid ? ssid->ssid : NULL,
                             ssid ? ssid->ssid_len : 0, pref_freq,
                             wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
                             0);
}


static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
{
        wpa_s->p2p_join_scan_count++;
        wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
                   wpa_s->p2p_join_scan_count);
        if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
                wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
                           " for join operationg - stop join attempt",
                           MAC2STR(wpa_s->pending_join_iface_addr));
                eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
                if (wpa_s->p2p_auto_pd) {
                        wpa_s->p2p_auto_pd = 0;
                        wpa_msg_global(wpa_s, MSG_INFO,
                                       P2P_EVENT_PROV_DISC_FAILURE
                                       " p2p_dev_addr=" MACSTR " status=N/A",
                                       MAC2STR(wpa_s->pending_join_dev_addr));
                        return;
                }
                wpa_msg_global(wpa_s->parent, MSG_INFO,
                               P2P_EVENT_GROUP_FORMATION_FAILURE);
        }
}


static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
{
        int res;
        unsigned int num, i;
        struct wpa_used_freq_data *freqs;

        if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
                /* Multiple channels are supported and not all are in use */
                return 0;
        }

        freqs = os_calloc(wpa_s->num_multichan_concurrent,
                          sizeof(struct wpa_used_freq_data));
        if (!freqs)
                return 1;

        num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
                                        wpa_s->num_multichan_concurrent);

        for (i = 0; i < num; i++) {
                if (freqs[i].freq == freq) {
                        wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
                                   freq);
                        res = 0;
                        goto exit_free;
                }
        }

        wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
        res = 1;

exit_free:
        os_free(freqs);
        return res;
}


static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
                            const u8 *peer_dev_addr)
{
        struct wpa_bss *bss;
        int updated;

        bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
        if (bss == NULL)
                return -1;
        if (bss->last_update_idx < wpa_s->bss_update_idx) {
                wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
                           "last scan");
                return 0;
        }

        updated = os_reltime_before(&wpa_s->p2p_auto_started,
                                    &bss->last_update);
        wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
                   "%ld.%06ld (%supdated in last scan)",
                   bss->last_update.sec, bss->last_update.usec,
                   updated ? "": "not ");

        return updated;
}


static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
                                   struct wpa_scan_results *scan_res)
{
        struct wpa_bss *bss = NULL;
        int freq;
        u8 iface_addr[ETH_ALEN];

        eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);

        if (wpa_s->global->p2p_disabled)
                return;

        wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
                   scan_res ? (int) scan_res->num : -1,
                   wpa_s->p2p_auto_join ? "auto_" : "");

        if (scan_res)
                wpas_p2p_scan_res_handler(wpa_s, scan_res);

        if (wpa_s->p2p_auto_pd) {
                int join = wpas_p2p_peer_go(wpa_s,
                                            wpa_s->pending_join_dev_addr);
                if (join == 0 &&
                    wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
                        wpa_s->auto_pd_scan_retry++;
                        bss = wpa_bss_get_bssid_latest(
                                wpa_s, wpa_s->pending_join_dev_addr);
                        if (bss) {
                                freq = bss->freq;
                                wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
                                           "the peer " MACSTR " at %d MHz",
                                           wpa_s->auto_pd_scan_retry,
                                           MAC2STR(wpa_s->
                                                   pending_join_dev_addr),
                                           freq);
                                wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
                                return;
                        }
                }

                if (join < 0)
                        join = 0;

                wpa_s->p2p_auto_pd = 0;
                wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
                wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
                           MAC2STR(wpa_s->pending_join_dev_addr), join);
                if (p2p_prov_disc_req(wpa_s->global->p2p,
                                      wpa_s->pending_join_dev_addr,
                                      wpa_s->pending_pd_config_methods, join,
                                      0, wpa_s->user_initiated_pd) < 0) {
                        wpa_s->p2p_auto_pd = 0;
                        wpa_msg_global(wpa_s, MSG_INFO,
                                       P2P_EVENT_PROV_DISC_FAILURE
                                       " p2p_dev_addr=" MACSTR " status=N/A",
                                       MAC2STR(wpa_s->pending_join_dev_addr));
                }
                return;
        }

        if (wpa_s->p2p_auto_join) {
                int join = wpas_p2p_peer_go(wpa_s,
                                            wpa_s->pending_join_dev_addr);
                if (join < 0) {
                        wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
                                   "running a GO -> use GO Negotiation");
                        wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
                                         wpa_s->p2p_pin, wpa_s->p2p_wps_method,
                                         wpa_s->p2p_persistent_group, 0, 0, 0,
                                         wpa_s->p2p_go_intent,
                                         wpa_s->p2p_connect_freq,
                                         wpa_s->p2p_persistent_id,
                                         wpa_s->p2p_pd_before_go_neg,
                                         wpa_s->p2p_go_ht40,
                                         wpa_s->p2p_go_vht);
                        return;
                }

                wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
                           "try to join the group", join ? "" :
                           " in older scan");
                if (!join)
                        wpa_s->p2p_fallback_to_go_neg = 1;
        }

        freq = p2p_get_oper_freq(wpa_s->global->p2p,
                                 wpa_s->pending_join_iface_addr);
        if (freq < 0 &&
            p2p_get_interface_addr(wpa_s->global->p2p,
                                   wpa_s->pending_join_dev_addr,
                                   iface_addr) == 0 &&
            os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0
            && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) {
                wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
                           "address for join from " MACSTR " to " MACSTR
                           " based on newly discovered P2P peer entry",
                           MAC2STR(wpa_s->pending_join_iface_addr),
                           MAC2STR(iface_addr));
                os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
                          ETH_ALEN);

                freq = p2p_get_oper_freq(wpa_s->global->p2p,
                                         wpa_s->pending_join_iface_addr);
        }
        if (freq >= 0) {
                wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
                           "from P2P peer table: %d MHz", freq);
        }
        if (wpa_s->p2p_join_ssid_len) {
                wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
                           MACSTR " and SSID %s",
                           MAC2STR(wpa_s->pending_join_iface_addr),
                           wpa_ssid_txt(wpa_s->p2p_join_ssid,
                                        wpa_s->p2p_join_ssid_len));
                bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
                                  wpa_s->p2p_join_ssid,
                                  wpa_s->p2p_join_ssid_len);
        }
        if (!bss) {
                wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
                           MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
                bss = wpa_bss_get_bssid_latest(wpa_s,
                                               wpa_s->pending_join_iface_addr);
        }
        if (bss) {
                freq = bss->freq;
                wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
                           "from BSS table: %d MHz (SSID %s)", freq,
                           wpa_ssid_txt(bss->ssid, bss->ssid_len));
        }
        if (freq > 0) {
                u16 method;

                if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
                        wpa_msg_global(wpa_s->parent, MSG_INFO,
                                       P2P_EVENT_GROUP_FORMATION_FAILURE
                                       "reason=FREQ_CONFLICT");
                        return;
                }

                wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
                           "prior to joining an existing group (GO " MACSTR
                           " freq=%u MHz)",
                           MAC2STR(wpa_s->pending_join_dev_addr), freq);
                wpa_s->pending_pd_before_join = 1;

                switch (wpa_s->pending_join_wps_method) {
                case WPS_PIN_DISPLAY:
                        method = WPS_CONFIG_KEYPAD;
                        break;
                case WPS_PIN_KEYPAD:
                        method = WPS_CONFIG_DISPLAY;
                        break;
                case WPS_PBC:
                        method = WPS_CONFIG_PUSHBUTTON;
                        break;
                default:
                        method = 0;
                        break;
                }

                if ((p2p_get_provisioning_info(wpa_s->global->p2p,
                                               wpa_s->pending_join_dev_addr) ==
                     method)) {
                        /*
                         * We have already performed provision discovery for
                         * joining the group. Proceed directly to join
                         * operation without duplicated provision discovery. */
                        wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
                                   "with " MACSTR " already done - proceed to "
                                   "join",
                                   MAC2STR(wpa_s->pending_join_dev_addr));
                        wpa_s->pending_pd_before_join = 0;
                        goto start;
                }

                if (p2p_prov_disc_req(wpa_s->global->p2p,
                                      wpa_s->pending_join_dev_addr, method, 1,
                                      freq, wpa_s->user_initiated_pd) < 0) {
                        wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
                                   "Discovery Request before joining an "
                                   "existing group");
                        wpa_s->pending_pd_before_join = 0;
                        goto start;
                }
                return;
        }

        wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
        eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
        eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
        wpas_p2p_check_join_scan_limit(wpa_s);
        return;

start:
        /* Start join operation immediately */
        wpas_p2p_join_start(wpa_s, 0, NULL, 0);
}


static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
                                   const u8 *ssid, size_t ssid_len)
{
        int ret;
        struct wpa_driver_scan_params params;
        struct wpabuf *wps_ie, *ies;
        size_t ielen;
        int freqs[2] = { 0, 0 };

        os_memset(&params, 0, sizeof(params));

        /* P2P Wildcard SSID */
        params.num_ssids = 1;
        if (ssid && ssid_len) {
                params.ssids[0].ssid = ssid;
                params.ssids[0].ssid_len = ssid_len;
                os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
                wpa_s->p2p_join_ssid_len = ssid_len;
        } else {
                params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
                params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
                wpa_s->p2p_join_ssid_len = 0;
        }

        wpa_s->wps->dev.p2p = 1;
        wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
                                        wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
                                        NULL);
        if (wps_ie == NULL) {
                wpas_p2p_scan_res_join(wpa_s, NULL);
                return;
        }

        ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
        ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
        if (ies == NULL) {
                wpabuf_free(wps_ie);
                wpas_p2p_scan_res_join(wpa_s, NULL);
                return;
        }
        wpabuf_put_buf(ies, wps_ie);
        wpabuf_free(wps_ie);

        p2p_scan_ie(wpa_s->global->p2p, ies, NULL);

        params.p2p_probe = 1;
        params.extra_ies = wpabuf_head(ies);
        params.extra_ies_len = wpabuf_len(ies);

        if (!freq) {
                int oper_freq;
                /*
                 * If freq is not provided, check the operating freq of the GO
                 * and use a single channel scan on if possible.
                 */
                oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
                                              wpa_s->pending_join_iface_addr);
                if (oper_freq > 0)
                        freq = oper_freq;
        }
        if (freq > 0) {
                freqs[0] = freq;
                params.freqs = freqs;
        }

        /*
         * Run a scan to update BSS table and start Provision Discovery once
         * the new scan results become available.
         */
        ret = wpa_drv_scan(wpa_s, &params);
        if (!ret) {
                os_get_reltime(&wpa_s->scan_trigger_time);
                wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
                wpa_s->own_scan_requested = 1;
        }

        wpabuf_free(ies);

        if (ret) {
                wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
                           "try again later");
                eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
                eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
                wpas_p2p_check_join_scan_limit(wpa_s);
        }
}


static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
{
        struct wpa_supplicant *wpa_s = eloop_ctx;
        wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
}


static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
                         const u8 *dev_addr, enum p2p_wps_method wps_method,
                         int auto_join, int op_freq,
                         const u8 *ssid, size_t ssid_len)
{
        wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
                   MACSTR " dev " MACSTR " op_freq=%d)%s",
                   MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
                   auto_join ? " (auto_join)" : "");
        if (ssid && ssid_len) {
                wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
                           wpa_ssid_txt(ssid, ssid_len));
        }

        wpa_s->p2p_auto_pd = 0;
        wpa_s->p2p_auto_join = !!auto_join;
        os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
        os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
        wpa_s->pending_join_wps_method = wps_method;

        /* Make sure we are not running find during connection establishment */
        wpas_p2p_stop_find(wpa_s);

        wpa_s->p2p_join_scan_count = 0;
        wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
        return 0;
}


static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
                               const u8 *ssid, size_t ssid_len)
{
        struct wpa_supplicant *group;
        struct p2p_go_neg_results res;
        struct wpa_bss *bss;

        group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
        if (group == NULL)
                return -1;
        if (group != wpa_s) {
                os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
                          sizeof(group->p2p_pin));
                group->p2p_wps_method = wpa_s->p2p_wps_method;
        } else {
                /*
                 * Need to mark the current interface for p2p_group_formation
                 * when a separate group interface is not used. This is needed
                 * to allow p2p_cancel stop a pending p2p_connect-join.
                 * wpas_p2p_init_group_interface() addresses this for the case
                 * where a separate group interface is used.
                 */
                wpa_s->global->p2p_group_formation = wpa_s;
        }

        group->p2p_in_provisioning = 1;
        group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;

        os_memset(&res, 0, sizeof(res));
        os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
        os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
                  ETH_ALEN);
        res.wps_method = wpa_s->pending_join_wps_method;
        if (freq && ssid && ssid_len) {
                res.freq = freq;
                res.ssid_len = ssid_len;
                os_memcpy(res.ssid, ssid, ssid_len);
        } else {
                bss = wpa_bss_get_bssid_latest(wpa_s,
                                               wpa_s->pending_join_iface_addr);
                if (bss) {
                        res.freq = bss->freq;
                        res.ssid_len = bss->ssid_len;
                        os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
                        wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
                                   bss->freq,
                                   wpa_ssid_txt(bss->ssid, bss->ssid_len));
                }
        }

        if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
                wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
                           "starting client");
                wpa_drv_cancel_remain_on_channel(wpa_s);
                wpa_s->off_channel_freq = 0;
                wpa_s->roc_waiting_drv_freq = 0;
        }
        wpas_start_wps_enrollee(group, &res);

        /*
         * Allow a longer timeout for join-a-running-group than normal 15
         * second group formation timeout since the GO may not have authorized
         * our connection yet.
         */
        eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
        eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
                               wpa_s, NULL);

        return 0;
}


static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
                                int *force_freq, int *pref_freq, int go)
{
        struct wpa_used_freq_data *freqs;
        int res, best_freq, num_unused;
        unsigned int freq_in_use = 0, num, i;

        freqs = os_calloc(wpa_s->num_multichan_concurrent,
                          sizeof(struct wpa_used_freq_data));
        if (!freqs)
                return -1;

        num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
                                        wpa_s->num_multichan_concurrent);

        /*
         * It is possible that the total number of used frequencies is bigger
         * than the number of frequencies used for P2P, so get the system wide
         * number of unused frequencies.
         */
        num_unused = wpas_p2p_num_unused_channels(wpa_s);

        wpa_printf(MSG_DEBUG,
                   "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
                   freq, wpa_s->num_multichan_concurrent, num, num_unused);

        if (freq > 0) {
                int ret;
                if (go)
                        ret = p2p_supported_freq(wpa_s->global->p2p, freq);
                else
                        ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
                if (!ret) {
                        wpa_printf(MSG_DEBUG, "P2P: The forced channel "
                                   "(%u MHz) is not supported for P2P uses",
                                   freq);
                        res = -3;
                        goto exit_free;
                }

                for (i = 0; i < num; i++) {
                        if (freqs[i].freq == freq)
                                freq_in_use = 1;
                }

                if (num_unused <= 0 && !freq_in_use) {
                        wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
                                   freq);
                        res = -2;
                        goto exit_free;
                }
                wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
                           "requested channel (%u MHz)", freq);
                *force_freq = freq;
                goto exit_ok;
        }

        best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);

        /* We have a candidate frequency to use */
        if (best_freq > 0) {
                if (*pref_freq == 0 && num_unused > 0) {
                        wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
                                   best_freq);
                        *pref_freq = best_freq;
                } else {
                        wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
                                   best_freq);
                        *force_freq = best_freq;
                }
        } else if (num_unused > 0) {
                wpa_printf(MSG_DEBUG,
                           "P2P: Current operating channels are not available for P2P. Try to use another channel");
                *force_freq = 0;
        } else {
                wpa_printf(MSG_DEBUG,
                           "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
                res = -2;
                goto exit_free;
        }

exit_ok:
        res = 0;
exit_free:
        os_free(freqs);
        return res;
}


/**
 * wpas_p2p_connect - Request P2P Group Formation to be started
 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
 * @peer_addr: Address of the peer P2P Device
 * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
 * @persistent_group: Whether to create a persistent group
 * @auto_join: Whether to select join vs. GO Negotiation automatically
 * @join: Whether to join an existing group (as a client) instead of starting
 *      Group Owner negotiation; @peer_addr is BSSID in that case
 * @auth: Whether to only authorize the connection instead of doing that and
 *      initiating Group Owner negotiation
 * @go_intent: GO Intent or -1 to use default
 * @freq: Frequency for the group or 0 for auto-selection
 * @persistent_id: Persistent group credentials to use for forcing GO
 *      parameters or -1 to generate new values (SSID/passphrase)
 * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
 *      interoperability workaround when initiating group formation
 * @ht40: Start GO with 40 MHz channel width
 * @vht:  Start GO with VHT support
 * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
 *      failure, -2 on failure due to channel not currently available,
 *      -3 if forced channel is not supported
 */
int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
                     const char *pin, enum p2p_wps_method wps_method,
                     int persistent_group, int auto_join, int join, int auth,
                     int go_intent, int freq, int persistent_id, int pd,
                     int ht40, int vht)
{
        int force_freq = 0, pref_freq = 0;
        int ret = 0, res;
        enum wpa_driver_if_type iftype;
        const u8 *if_addr;
        struct wpa_ssid *ssid = NULL;

        if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
                return -1;

        if (persistent_id >= 0) {
                ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
                if (ssid == NULL || ssid->disabled != 2 ||
                    ssid->mode != WPAS_MODE_P2P_GO)
                        return -1;
        }

        os_free(wpa_s->global->add_psk);
        wpa_s->global->add_psk = NULL;

        wpa_s->global->p2p_fail_on_wps_complete = 0;

        if (go_intent < 0)
                go_intent = wpa_s->conf->p2p_go_intent;

        if (!auth)
                wpa_s->p2p_long_listen = 0;

        wpa_s->p2p_wps_method = wps_method;
        wpa_s->p2p_persistent_group = !!persistent_group;
        wpa_s->p2p_persistent_id = persistent_id;
        wpa_s->p2p_go_intent = go_intent;
        wpa_s->p2p_connect_freq = freq;
        wpa_s->p2p_fallback_to_go_neg = 0;
        wpa_s->p2p_pd_before_go_neg = !!pd;
        wpa_s->p2p_go_ht40 = !!ht40;
        wpa_s->p2p_go_vht = !!vht;

        if (pin)
                os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
        else if (wps_method == WPS_PIN_DISPLAY) {
                ret = wps_generate_pin();
                os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), "%08d",
                            ret);
                wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
                           wpa_s->p2p_pin);
        } else
                wpa_s->p2p_pin[0] = '\0';

        if (join || auto_join) {
                u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
                if (auth) {
                        wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
                                   "connect a running group from " MACSTR,
                                   MAC2STR(peer_addr));
                        os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
                        return ret;
                }
                os_memcpy(dev_addr, peer_addr, ETH_ALEN);
                if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
                                           iface_addr) < 0) {
                        os_memcpy(iface_addr, peer_addr, ETH_ALEN);
                        p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
                                         dev_addr);
                }
                if (auto_join) {
                        os_get_reltime(&wpa_s->p2p_auto_started);
                        wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
                                   "%ld.%06ld",
                                   wpa_s->p2p_auto_started.sec,
                                   wpa_s->p2p_auto_started.usec);
                }
                wpa_s->user_initiated_pd = 1;
                if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
                                  auto_join, freq, NULL, 0) < 0)
                        return -1;
                return ret;
        }

        res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
                                   go_intent == 15);
        if (res)
                return res;
        wpas_p2p_set_own_freq_preference(wpa_s,
                                         force_freq ? force_freq : pref_freq);

        wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);

        if (wpa_s->create_p2p_iface) {
                /* Prepare to add a new interface for the group */
                iftype = WPA_IF_P2P_GROUP;
                if (go_intent == 15)
                        iftype = WPA_IF_P2P_GO;
                if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
                        wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
                                   "interface for the group");
                        return -1;
                }

                if_addr = wpa_s->pending_interface_addr;
        } else
                if_addr = wpa_s->own_addr;

        if (auth) {
                if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
                                         go_intent, if_addr,
                                         force_freq, persistent_group, ssid,
                                         pref_freq) < 0)
                        return -1;
                return ret;
        }

        if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
                                  go_intent, if_addr, force_freq,
                                  persistent_group, ssid, pref_freq) < 0) {
                if (wpa_s->create_p2p_iface)
                        wpas_p2p_remove_pending_group_interface(wpa_s);
                return -1;
        }
        return ret;
}


/**
 * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
 * @freq: Frequency of the channel in MHz
 * @duration: Duration of the stay on the channel in milliseconds
 *
 * This callback is called when the driver indicates that it has started the
 * requested remain-on-channel duration.
 */
void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
                                   unsigned int freq, unsigned int duration)
{
        if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
                return;
        if (wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
                p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
                              wpa_s->pending_listen_duration);
                wpa_s->pending_listen_freq = 0;
        } else {
                wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
                           wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
                           freq, duration);
        }
}


static int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s,
                                 unsigned int timeout)
{
        /* Limit maximum Listen state time based on driver limitation. */
        if (timeout > wpa_s->max_remain_on_chan)
                timeout = wpa_s->max_remain_on_chan;

        return p2p_listen(wpa_s->global->p2p, timeout);
}


/**
 * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
 * @freq: Frequency of the channel in MHz
 *
 * This callback is called when the driver indicates that a remain-on-channel
 * operation has been completed, i.e., the duration on the requested channel
 * has timed out.
 */
void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
                                          unsigned int freq)
{
        wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
                   "(p2p_long_listen=%d ms pending_action_tx=%p)",
                   wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
        wpas_p2p_listen_work_done(wpa_s);
        if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
                return;
        if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
                return; /* P2P module started a new operation */
        if (offchannel_pending_action_tx(wpa_s))
                return;
        if (wpa_s->p2p_long_listen > 0)
                wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
        if (wpa_s->p2p_long_listen > 0) {
                wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
                wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
        } else {
                /*
                 * When listen duration is over, stop listen & update p2p_state
                 * to IDLE.
                 */
                p2p_stop_listen(wpa_s->global->p2p);
        }
}


/**
 * wpas_p2p_group_remove - Remove a P2P group
 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
 * @ifname: Network interface name of the group interface or "*" to remove all
 *      groups
 * Returns: 0 on success, -1 on failure
 *
 * This function is used to remove a P2P group. This can be used to disconnect
 * from a group in which the local end is a P2P Client or to end a P2P Group in
 * case the local end is the Group Owner. If a virtual network interface was
 * created for this group, that interface will be removed. Otherwise, only the
 * configured P2P group network will be removed from the interface.
 */
int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
{
        struct wpa_global *global = wpa_s->global;
        struct wpa_supplicant *calling_wpa_s = wpa_s;

        if (os_strcmp(ifname, "*") == 0) {
                struct wpa_supplicant *prev;
                wpa_s = global->ifaces;
                while (wpa_s) {
                        prev = wpa_s;
                        wpa_s = wpa_s->next;
                        if (prev->p2p_group_interface !=
                            NOT_P2P_GROUP_INTERFACE ||
                            (prev->current_ssid &&
                             prev->current_ssid->p2p_group))
                                wpas_p2p_disconnect_safely(prev, calling_wpa_s);
                }
                return 0;
        }

        for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
                if (os_strcmp(wpa_s->ifname, ifname) == 0)
                        break;
        }

        return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s);
}


static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
{
        unsigned int r;

        if (freq == 2) {
                wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
                           "band");
                if (wpa_s->best_24_freq > 0 &&
                    p2p_supported_freq_go(wpa_s->global->p2p,
                                          wpa_s->best_24_freq)) {
                        freq = wpa_s->best_24_freq;
                        wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
                                   "channel: %d MHz", freq);
                } else {
                        if (os_get_random((u8 *) &r, sizeof(r)) < 0)
                                return -1;
                        freq = 2412 + (r % 3) * 25;
                        wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
                                   "channel: %d MHz", freq);
                }
        }

        if (freq == 5) {
                wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
                           "band");
                if (wpa_s->best_5_freq > 0 &&
                    p2p_supported_freq_go(wpa_s->global->p2p,
                                       wpa_s->best_5_freq)) {
                        freq = wpa_s->best_5_freq;
                        wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
                                   "channel: %d MHz", freq);
                } else {
                        if (os_get_random((u8 *) &r, sizeof(r)) < 0)
                                return -1;
                        freq = 5180 + (r % 4) * 20;
                        if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
                                wpa_printf(MSG_DEBUG, "P2P: Could not select "
                                           "5 GHz channel for P2P group");
                                return -1;
                        }
                        wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
                                   "channel: %d MHz", freq);
                }
        }

        if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
                wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
                           "(%u MHz) is not supported for P2P uses",
                           freq);
                return -1;
        }

        return freq;
}


static int wpas_p2p_select_freq_no_pref(struct wpa_supplicant *wpa_s,
                                        struct p2p_go_neg_results *params,
                                        const struct p2p_channels *channels)
{
        unsigned int i, r;

        /* first try some random selection of the social channels */
        if (os_get_random((u8 *) &r, sizeof(r)) < 0)
                return -1;

        for (i = 0; i < 3; i++) {
                params->freq = 2412 + ((r + i) % 3) * 25;
                if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
                    freq_included(channels, params->freq) &&
                    p2p_supported_freq(wpa_s->global->p2p, params->freq))
                        goto out;
        }

        /* try all channels in reg. class 81 */
        for (i = 0; i < 11; i++) {
                params->freq = 2412 + i * 5;
                if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
                    freq_included(channels, params->freq) &&
                    p2p_supported_freq(wpa_s->global->p2p, params->freq))
                        goto out;
        }

        /* try social channel class 180 channel 2 */
        params->freq = 58320 + 1 * 2160;
        if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
            freq_included(channels, params->freq) &&
            p2p_supported_freq(wpa_s->global->p2p, params->freq))
                goto out;

        /* try all channels in reg. class 180 */
        for (i = 0; i < 4; i++) {
                params->freq = 58320 + i * 2160;
                if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
                    freq_included(channels, params->freq) &&
                    p2p_supported_freq(wpa_s->global->p2p, params->freq))
                        goto out;
        }

        wpa_printf(MSG_DEBUG, "P2P: No 2.4 and 60 GHz channel allowed");
        return -1;
out:
        wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)",
                   params->freq);
        return 0;
}


static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
                                   struct p2p_go_neg_results *params,
                                   int freq, int ht40, int vht,
                                   const struct p2p_channels *channels)
{
        struct wpa_used_freq_data *freqs;
        unsigned int pref_freq, cand_freq;
        unsigned int num, i;

        os_memset(params, 0, sizeof(*params));
        params->role_go = 1;
        params->ht40 = ht40;
        params->vht = vht;
        if (freq) {
                if (!freq_included(channels, freq)) {
                        wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
                                   "accepted", freq);
                        return -1;
                }
                wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced "
                           "frequency %d MHz", freq);
                params->freq = freq;
        } else if (wpa_s->conf->p2p_oper_reg_class == 81 &&
                   wpa_s->conf->p2p_oper_channel >= 1 &&
                   wpa_s->conf->p2p_oper_channel <= 11 &&
                   freq_included(channels,
                                 2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
                params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
                wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
                           "frequency %d MHz", params->freq);
        } else if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
                    wpa_s->conf->p2p_oper_reg_class == 116 ||
                    wpa_s->conf->p2p_oper_reg_class == 117 ||
                    wpa_s->conf->p2p_oper_reg_class == 124 ||
                    wpa_s->conf->p2p_oper_reg_class == 126 ||
                    wpa_s->conf->p2p_oper_reg_class == 127) &&
                   freq_included(channels,
                                 5000 + 5 * wpa_s->conf->p2p_oper_channel)) {
                params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
                wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
                           "frequency %d MHz", params->freq);
        } else if (wpa_s->conf->p2p_oper_channel == 0 &&
                   wpa_s->best_overall_freq > 0 &&
                   p2p_supported_freq_go(wpa_s->global->p2p,
                                         wpa_s->best_overall_freq) &&
                   freq_included(channels, wpa_s->best_overall_freq)) {
                params->freq = wpa_s->best_overall_freq;
                wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
                           "channel %d MHz", params->freq);
        } else if (wpa_s->conf->p2p_oper_channel == 0 &&
                   wpa_s->best_24_freq > 0 &&
                   p2p_supported_freq_go(wpa_s->global->p2p,
                                         wpa_s->best_24_freq) &&
                   freq_included(channels, wpa_s->best_24_freq)) {
                params->freq = wpa_s->best_24_freq;
                wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
                           "channel %d MHz", params->freq);
        } else if (wpa_s->conf->p2p_oper_channel == 0 &&
                   wpa_s->best_5_freq > 0 &&
                   p2p_supported_freq_go(wpa_s->global->p2p,
                                         wpa_s->best_5_freq) &&
                   freq_included(channels, wpa_s->best_5_freq)) {
                params->freq = wpa_s->best_5_freq;
                wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
                           "channel %d MHz", params->freq);
        } else if ((pref_freq = p2p_get_pref_freq(wpa_s->global->p2p,
                                                  channels))) {
                params->freq = pref_freq;
                wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
                           "channels", params->freq);
        } else {
                /* no preference, select some channel */
                if (wpas_p2p_select_freq_no_pref(wpa_s, params, channels) < 0)
                        return -1;
        }

        freqs = os_calloc(wpa_s->num_multichan_concurrent,
                          sizeof(struct wpa_used_freq_data));
        if (!freqs)
                return -1;

        num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
                                        wpa_s->num_multichan_concurrent);

        cand_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);

        /* First try the best used frequency if possible */
        if (!freq && cand_freq > 0 && freq_included(channels, cand_freq)) {
                params->freq = cand_freq;
        } else if (!freq) {
                /* Try any of the used frequencies */
                for (i = 0; i < num; i++) {
                        if (freq_included(channels, freqs[i].freq)) {
                                wpa_printf(MSG_DEBUG, "P2P: Force GO on a channel we are already using (%u MHz)",
                                           freqs[i].freq);
                                params->freq = freqs[i].freq;
                                break;
                        }
                }

                if (i == num) {
                        if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
                                wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using");
                                os_free(freqs);
                                return -1;
                        } else {
                                wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using. Use one of the free channels");
                        }
                }
        } else {
                for (i = 0; i < num; i++) {
                        if (freqs[i].freq == freq)
                                break;
                }

                if (i == num) {
                        if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
                                if (freq)
                                        wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on freq (%u MHz) as all the channels are in use", freq);
                                os_free(freqs);
                                return -1;
                        } else {
                                wpa_printf(MSG_DEBUG, "P2P: Use one of the free channels");
                        }
                }
        }

        os_free(freqs);
        return 0;
}


static struct wpa_supplicant *
wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
                         int go)
{
        struct wpa_supplicant *group_wpa_s;

        if (!wpas_p2p_create_iface(wpa_s)) {
                wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
                        "operations");
                wpa_s->p2p_first_connection_timeout = 0;
                return wpa_s;
        }

        if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
                                         WPA_IF_P2P_CLIENT) < 0) {
                wpa_msg_global(wpa_s, MSG_ERROR,
                               "P2P: Failed to add group interface");
                return NULL;
        }
        group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
        if (group_wpa_s == NULL) {
                wpa_msg_global(wpa_s, MSG_ERROR,
                               "P2P: Failed to initialize group interface");
                wpas_p2p_remove_pending_group_interface(wpa_s);
                return NULL;
        }

        wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
                group_wpa_s->ifname);
        group_wpa_s->p2p_first_connection_timeout = 0;
        return group_wpa_s;
}


/**
 * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
 * @persistent_group: Whether to create a persistent group
 * @freq: Frequency for the group or 0 to indicate no hardcoding
 * @ht40: Start GO with 40 MHz channel width
 * @vht:  Start GO with VHT support
 * Returns: 0 on success, -1 on failure
 *
 * This function creates a new P2P group with the local end as the Group Owner,
 * i.e., without using Group Owner Negotiation.
 */
int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
                       int freq, int ht40, int vht)
{
        struct p2p_go_neg_results params;

        if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
                return -1;

        os_free(wpa_s->global->add_psk);
        wpa_s->global->add_psk = NULL;

        /* Make sure we are not running find during connection establishment */
        wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
        wpas_p2p_stop_find_oper(wpa_s);

        freq = wpas_p2p_select_go_freq(wpa_s, freq);
        if (freq < 0)
                return -1;

        if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, NULL))
                return -1;
        if (params.freq &&
            !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
                wpa_printf(MSG_DEBUG, "P2P: The selected channel for GO "
                           "(%u MHz) is not supported for P2P uses",
                           params.freq);
                return -1;
        }
        p2p_go_params(wpa_s->global->p2p, &params);
        params.persistent_group = persistent_group;

        wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
        if (wpa_s == NULL)
                return -1;
        wpas_start_wps_go(wpa_s, &params, 0);

        return 0;
}


static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
                                 struct wpa_ssid *params, int addr_allocated,
                                 int freq)
{
        struct wpa_ssid *ssid;

        wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
        if (wpa_s == NULL)
                return -1;
        wpa_s->p2p_last_4way_hs_fail = NULL;

        wpa_supplicant_ap_deinit(wpa_s);

        ssid = wpa_config_add_network(wpa_s->conf);
        if (ssid == NULL)
                return -1;
        wpa_config_set_network_defaults(ssid);
        ssid->temporary = 1;
        ssid->proto = WPA_PROTO_RSN;
        ssid->pairwise_cipher = WPA_CIPHER_CCMP;
        ssid->group_cipher = WPA_CIPHER_CCMP;
        ssid->key_mgmt = WPA_KEY_MGMT_PSK;
        ssid->ssid = os_malloc(params->ssid_len);
        if (ssid->ssid == NULL) {
                wpa_config_remove_network(wpa_s->conf, ssid->id);
                return -1;
        }
        os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
        ssid->ssid_len = params->ssid_len;
        ssid->p2p_group = 1;
        ssid->export_keys = 1;
        if (params->psk_set) {
                os_memcpy(ssid->psk, params->psk, 32);
                ssid->psk_set = 1;
        }
        if (params->passphrase)
                ssid->passphrase = os_strdup(params->passphrase);

        wpa_s->show_group_started = 1;
        wpa_s->p2p_in_invitation = 1;
        wpa_s->p2p_invite_go_freq = freq;

        eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
                             NULL);
        eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
                               wpas_p2p_group_formation_timeout,
                               wpa_s->parent, NULL);
        wpa_supplicant_select_network(wpa_s, ssid);

        return 0;
}


int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
                                  struct wpa_ssid *ssid, int addr_allocated,
                                  int force_freq, int neg_freq, int ht40,
                                  int vht, const struct p2p_channels *channels,
                                  int connection_timeout)
{
        struct p2p_go_neg_results params;
        int go = 0, freq;

        if (ssid->disabled != 2 || ssid->ssid == NULL)
                return -1;

        if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
            go == (ssid->mode == WPAS_MODE_P2P_GO)) {
                wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
                           "already running");
                return 0;
        }

        os_free(wpa_s->global->add_psk);
        wpa_s->global->add_psk = NULL;

        /* Make sure we are not running find during connection establishment */
        wpas_p2p_stop_find_oper(wpa_s);

        wpa_s->p2p_fallback_to_go_neg = 0;

        if (ssid->mode == WPAS_MODE_P2P_GO) {
                if (force_freq > 0) {
                        freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
                        if (freq < 0)
                                return -1;
                } else {
                        freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
                        if (freq < 0 ||
                            (freq > 0 && !freq_included(channels, freq)))
                                freq = 0;
                }
        } else {
                freq = neg_freq;
                if (freq < 0 ||
                    (freq > 0 && !freq_included(channels, freq)))
                        freq = 0;
        }

        if (ssid->mode == WPAS_MODE_INFRA)
                return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq);

        if (ssid->mode != WPAS_MODE_P2P_GO)
                return -1;

        if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, channels))
                return -1;

        params.role_go = 1;
        params.psk_set = ssid->psk_set;
        if (params.psk_set)
                os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
        if (ssid->passphrase) {
                if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
                        wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
                                   "persistent group");
                        return -1;
                }
                os_strlcpy(params.passphrase, ssid->passphrase,
                           sizeof(params.passphrase));
        }
        os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
        params.ssid_len = ssid->ssid_len;
        params.persistent_group = 1;

        wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
        if (wpa_s == NULL)
                return -1;

        p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS);

        wpa_s->p2p_first_connection_timeout = connection_timeout;
        wpas_start_wps_go(wpa_s, &params, 0);

        return 0;
}


static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
                               struct wpabuf *proberesp_ies)
{
        struct wpa_supplicant *wpa_s = ctx;
        if (wpa_s->ap_iface) {
                struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
                if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
                        wpabuf_free(beacon_ies);
                        wpabuf_free(proberesp_ies);
                        return;
                }
                if (beacon_ies) {
                        wpabuf_free(hapd->p2p_beacon_ie);
                        hapd->p2p_beacon_ie = beacon_ies;
                }
                wpabuf_free(hapd->p2p_probe_resp_ie);
                hapd->p2p_probe_resp_ie = proberesp_ies;
        } else {
                wpabuf_free(beacon_ies);
                wpabuf_free(proberesp_ies);
        }
        wpa_supplicant_ap_update_beacon(wpa_s);
}


static void wpas_p2p_idle_update(void *ctx, int idle)
{
        struct wpa_supplicant *wpa_s = ctx;
        if (!wpa_s->ap_iface)
                return;
        wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
        if (idle) {
                if (wpa_s->global->p2p_fail_on_wps_complete &&
                    wpa_s->p2p_in_provisioning) {
                        wpas_p2p_grpform_fail_after_wps(wpa_s);
                        return;
                }
                wpas_p2p_set_group_idle_timeout(wpa_s);
        } else
                eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
}


struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
                                       struct wpa_ssid *ssid)
{
        struct p2p_group *group;
        struct p2p_group_config *cfg;

        if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
                return NULL;

        cfg = os_zalloc(sizeof(*cfg));
        if (cfg == NULL)
                return NULL;

        if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
                cfg->persistent_group = 2;
        else if (ssid->p2p_persistent_group)
                cfg->persistent_group = 1;
        os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
        if (wpa_s->max_stations &&
            wpa_s->max_stations < wpa_s->conf->max_num_sta)
                cfg->max_clients = wpa_s->max_stations;
        else
                cfg->max_clients = wpa_s->conf->max_num_sta;
        os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
        cfg->ssid_len = ssid->ssid_len;
        cfg->freq = ssid->frequency;
        cfg->cb_ctx = wpa_s;
        cfg->ie_update = wpas_p2p_ie_update;
        cfg->idle_update = wpas_p2p_idle_update;

        group = p2p_group_init(wpa_s->global->p2p, cfg);
        if (group == NULL)
                os_free(cfg);
        if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
                p2p_group_notif_formation_done(group);
        wpa_s->p2p_group = group;
        return group;
}


void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
                          int registrar)
{
        struct wpa_ssid *ssid = wpa_s->current_ssid;

        if (!wpa_s->p2p_in_provisioning) {
                wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
                           "provisioning not in progress");
                return;
        }

        if (ssid && ssid->mode == WPAS_MODE_INFRA) {
                u8 go_dev_addr[ETH_ALEN];
                os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
                wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
                                          ssid->ssid_len);
                /* Clear any stored provisioning info */
                p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
        }

        eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
                             NULL);
        wpa_s->p2p_go_group_formation_completed = 1;
        if (ssid && ssid->mode == WPAS_MODE_INFRA) {
                /*
                 * Use a separate timeout for initial data connection to
                 * complete to allow the group to be removed automatically if
                 * something goes wrong in this step before the P2P group idle
                 * timeout mechanism is taken into use.
                 */
                wpa_dbg(wpa_s, MSG_DEBUG,
                        "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
                        P2P_MAX_INITIAL_CONN_WAIT);
                eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
                                       wpas_p2p_group_formation_timeout,
                                       wpa_s->parent, NULL);
        } else if (ssid) {
                /*
                 * Use a separate timeout for initial data connection to
                 * complete to allow the group to be removed automatically if
                 * the client does not complete data connection successfully.
                 */
                wpa_dbg(wpa_s, MSG_DEBUG,
                        "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
                        P2P_MAX_INITIAL_CONN_WAIT_GO);
                eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
                                       wpas_p2p_group_formation_timeout,
                                       wpa_s->parent, NULL);
                /*
                 * Complete group formation on first successful data connection
                 */
                wpa_s->p2p_go_group_formation_completed = 0;
        }
        if (wpa_s->global->p2p)
                p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
        wpas_group_formation_completed(wpa_s, 1);
}


void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
                         struct wps_event_fail *fail)
{
        if (!wpa_s->p2p_in_provisioning) {
                wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
                           "provisioning not in progress");
                return;
        }

        if (wpa_s->go_params) {
                p2p_clear_provisioning_info(
                        wpa_s->global->p2p,
                        wpa_s->go_params->peer_device_addr);
        }

        wpas_notify_p2p_wps_failed(wpa_s, fail);

        if (wpa_s == wpa_s->global->p2p_group_formation) {
                /*
                 * Allow some time for the failed WPS negotiation exchange to
                 * complete, but remove the group since group formation cannot
                 * succeed after provisioning failure.
                 */
                wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
                wpa_s->global->p2p_fail_on_wps_complete = 1;
                eloop_deplete_timeout(0, 50000,
                                      wpas_p2p_group_formation_timeout,
                                      wpa_s->parent, NULL);
        }
}


int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
{
        if (!wpa_s->global->p2p_fail_on_wps_complete ||
            !wpa_s->p2p_in_provisioning)
                return 0;

        wpas_p2p_grpform_fail_after_wps(wpa_s);

        return 1;
}


int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
                       const char *config_method,
                       enum wpas_p2p_prov_disc_use use)
{
        u16 config_methods;

        wpa_s->p2p_fallback_to_go_neg = 0;
        wpa_s->pending_pd_use = NORMAL_PD;
        if (os_strncmp(config_method, "display", 7) == 0)
                config_methods = WPS_CONFIG_DISPLAY;
        else if (os_strncmp(config_method, "keypad", 6) == 0)
                config_methods = WPS_CONFIG_KEYPAD;
        else if (os_strncmp(config_method, "pbc", 3) == 0 ||
                 os_strncmp(config_method, "pushbutton", 10) == 0)
                config_methods = WPS_CONFIG_PUSHBUTTON;
        else {
                wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
                return -1;
        }

        if (use == WPAS_P2P_PD_AUTO) {
                os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
                wpa_s->pending_pd_config_methods = config_methods;
                wpa_s->p2p_auto_pd = 1;
                wpa_s->p2p_auto_join = 0;
                wpa_s->pending_pd_before_join = 0;
                wpa_s->auto_pd_scan_retry = 0;
                wpas_p2p_stop_find(wpa_s);
                wpa_s->p2p_join_scan_count = 0;
                os_get_reltime(&wpa_s->p2p_auto_started);
                wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
                           wpa_s->p2p_auto_started.sec,
                           wpa_s->p2p_auto_started.usec);
                wpas_p2p_join_scan(wpa_s, NULL);
                return 0;
        }

        if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
                return -1;

        return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr,
                                 config_methods, use == WPAS_P2P_PD_FOR_JOIN,
                                 0, 1);
}


int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
                              char *end)
{
        return p2p_scan_result_text(ies, ies_len, buf, end);
}


static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
{
        if (!offchannel_pending_action_tx(wpa_s))
                return;

        wpas_p2p_action_tx_clear(wpa_s);

        wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
                   "operation request");
        offchannel_clear_pending_action_tx(wpa_s);
}


int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
                  enum p2p_discovery_type type,
                  unsigned int num_req_dev_types, const u8 *req_dev_types,
                  const u8 *dev_id, unsigned int search_delay)
{
        wpas_p2p_clear_pending_action_tx(wpa_s);
        wpa_s->p2p_long_listen = 0;

        if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
            wpa_s->p2p_in_provisioning)
                return -1;

        wpa_supplicant_cancel_sched_scan(wpa_s);

        return p2p_find(wpa_s->global->p2p, timeout, type,
                        num_req_dev_types, req_dev_types, dev_id,
                        search_delay);
}


static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s,
                                            struct wpa_scan_results *scan_res)
{
        wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");

        if (wpa_s->p2p_scan_work) {
                struct wpa_radio_work *work = wpa_s->p2p_scan_work;
                wpa_s->p2p_scan_work = NULL;
                radio_work_done(work);
        }

        if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
                return;

        /*
         * Indicate that results have been processed so that the P2P module can
         * continue pending tasks.
         */
        p2p_scan_res_handled(wpa_s->global->p2p);
}


static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
{
        wpas_p2p_clear_pending_action_tx(wpa_s);
        wpa_s->p2p_long_listen = 0;
        eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
        eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);

        if (wpa_s->global->p2p)
                p2p_stop_find(wpa_s->global->p2p);

        if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
                wpa_printf(MSG_DEBUG,
                           "P2P: Do not consider the scan results after stop_find");
                wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search;
        }
}


void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
{
        wpas_p2p_stop_find_oper(wpa_s);
        wpas_p2p_remove_pending_group_interface(wpa_s);
}


static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
{
        struct wpa_supplicant *wpa_s = eloop_ctx;
        wpa_s->p2p_long_listen = 0;
}


int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
{
        int res;

        if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
                return -1;

        wpa_supplicant_cancel_sched_scan(wpa_s);
        wpas_p2p_clear_pending_action_tx(wpa_s);

        if (timeout == 0) {
                /*
                 * This is a request for unlimited Listen state. However, at
                 * least for now, this is mapped to a Listen state for one
                 * hour.
                 */
                timeout = 3600;
        }
        eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
        wpa_s->p2p_long_listen = 0;

        /*
         * Stop previous find/listen operation to avoid trying to request a new
         * remain-on-channel operation while the driver is still running the
         * previous one.
         */
        if (wpa_s->global->p2p)
                p2p_stop_find(wpa_s->global->p2p);

        res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
        if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
                wpa_s->p2p_long_listen = timeout * 1000;
                eloop_register_timeout(timeout, 0,
                                       wpas_p2p_long_listen_timeout,
                                       wpa_s, NULL);
        }

        return res;
}


int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
                          u8 *buf, size_t len, int p2p_group)
{
        struct wpabuf *p2p_ie;
        int ret;

        if (wpa_s->global->p2p_disabled)
                return -1;
        if (wpa_s->conf->p2p_disabled)
                return -1;
        if (wpa_s->global->p2p == NULL)
                return -1;
        if (bss == NULL)
                return -1;

        p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
        ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
                               p2p_group, p2p_ie);
        wpabuf_free(p2p_ie);

        return ret;
}


int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
                          const u8 *dst, const u8 *bssid,
                          const u8 *ie, size_t ie_len, int ssi_signal)
{
        if (wpa_s->global->p2p_disabled)
                return 0;
        if (wpa_s->global->p2p == NULL)
                return 0;

        switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
                                 ie, ie_len)) {
        case P2P_PREQ_NOT_P2P:
                wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
                                 ssi_signal);
                /* fall through */
        case P2P_PREQ_MALFORMED:
        case P2P_PREQ_NOT_LISTEN:
        case P2P_PREQ_NOT_PROCESSED:
        default: /* make gcc happy */
                return 0;
        case P2P_PREQ_PROCESSED:
                return 1;
        }
}


void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
                        const u8 *sa, const u8 *bssid,
                        u8 category, const u8 *data, size_t len, int freq)
{
        if (wpa_s->global->p2p_disabled)
                return;
        if (wpa_s->global->p2p == NULL)
                return;

        p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
                      freq);
}


void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
{
        if (wpa_s->global->p2p_disabled)
                return;
        if (wpa_s->global->p2p == NULL)
                return;

        p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
}


static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
{
        p2p_group_deinit(wpa_s->p2p_group);
        wpa_s->p2p_group = NULL;

        wpa_s->ap_configured_cb = NULL;
        wpa_s->ap_configured_cb_ctx = NULL;
        wpa_s->ap_configured_cb_data = NULL;
        wpa_s->connect_without_scan = NULL;
}


int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
{
        wpa_s->p2p_long_listen = 0;

        if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
                return -1;

        return p2p_reject(wpa_s->global->p2p, addr);
}


/* Invite to reinvoke a persistent group */
int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
                    struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
                    int ht40, int vht, int pref_freq)
{
        enum p2p_invite_role role;
        u8 *bssid = NULL;
        int force_freq = 0;
        int res;
        int no_pref_freq_given = pref_freq == 0;

        wpa_s->global->p2p_invite_group = NULL;
        if (peer_addr)
                os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
        else
                os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);

        wpa_s->p2p_persistent_go_freq = freq;
        wpa_s->p2p_go_ht40 = !!ht40;
        if (ssid->mode == WPAS_MODE_P2P_GO) {
                role = P2P_INVITE_ROLE_GO;
                if (peer_addr == NULL) {
                        wpa_printf(MSG_DEBUG, "P2P: Missing peer "
                                   "address in invitation command");
                        return -1;
                }
                if (wpas_p2p_create_iface(wpa_s)) {
                        if (wpas_p2p_add_group_interface(wpa_s,
                                                         WPA_IF_P2P_GO) < 0) {
                                wpa_printf(MSG_ERROR, "P2P: Failed to "
                                           "allocate a new interface for the "
                                           "group");
                                return -1;
                        }
                        bssid = wpa_s->pending_interface_addr;
                } else
                        bssid = wpa_s->own_addr;
        } else {
                role = P2P_INVITE_ROLE_CLIENT;
                peer_addr = ssid->bssid;
        }
        wpa_s->pending_invite_ssid_id = ssid->id;

        res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
                                   role == P2P_INVITE_ROLE_GO);
        if (res)
                return res;

        if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
                return -1;

        if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
            no_pref_freq_given && pref_freq > 0 &&
            wpa_s->num_multichan_concurrent > 1 &&
            wpas_p2p_num_unused_channels(wpa_s) > 0) {
                wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
                           pref_freq);
                pref_freq = 0;
        }

        return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
                          ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
                          1, pref_freq, -1);
}


/* Invite to join an active group */
int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
                          const u8 *peer_addr, const u8 *go_dev_addr)
{
        struct wpa_global *global = wpa_s->global;
        enum p2p_invite_role role;
        u8 *bssid = NULL;
        struct wpa_ssid *ssid;
        int persistent;
        int freq = 0, force_freq = 0, pref_freq = 0;
        int res;

        wpa_s->p2p_persistent_go_freq = 0;
        wpa_s->p2p_go_ht40 = 0;
        wpa_s->p2p_go_vht = 0;

        for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
                if (os_strcmp(wpa_s->ifname, ifname) == 0)
                        break;
        }
        if (wpa_s == NULL) {
                wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
                return -1;
        }

        ssid = wpa_s->current_ssid;
        if (ssid == NULL) {
                wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
                           "invitation");
                return -1;
        }

        wpa_s->global->p2p_invite_group = wpa_s;
        persistent = ssid->p2p_persistent_group &&
                wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
                                        ssid->ssid, ssid->ssid_len);

        if (ssid->mode == WPAS_MODE_P2P_GO) {
                role = P2P_INVITE_ROLE_ACTIVE_GO;
                bssid = wpa_s->own_addr;
                if (go_dev_addr == NULL)
                        go_dev_addr = wpa_s->global->p2p_dev_addr;
                freq = ssid->frequency;
        } else {
                role = P2P_INVITE_ROLE_CLIENT;
                if (wpa_s->wpa_state < WPA_ASSOCIATED) {
                        wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
                                   "invite to current group");
                        return -1;
                }
                bssid = wpa_s->bssid;
                if (go_dev_addr == NULL &&
                    !is_zero_ether_addr(wpa_s->go_dev_addr))
                        go_dev_addr = wpa_s->go_dev_addr;
                freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
                        (int) wpa_s->assoc_freq;
        }
        wpa_s->parent->pending_invite_ssid_id = -1;

        if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
                return -1;

        res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
                                   role == P2P_INVITE_ROLE_ACTIVE_GO);
        if (res)
                return res;
        wpas_p2p_set_own_freq_preference(wpa_s, force_freq);

        return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
                          ssid->ssid, ssid->ssid_len, force_freq,
                          go_dev_addr, persistent, pref_freq, -1);
}


void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
{
        struct wpa_ssid *ssid = wpa_s->current_ssid;
        u8 go_dev_addr[ETH_ALEN];
        int network_id = -1;
        int persistent;
        int freq;
        u8 ip[3 * 4];
        char ip_addr[100];

        if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
                eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
                                     wpa_s->parent, NULL);
        }

        if (!wpa_s->show_group_started || !ssid)
                return;

        wpa_s->show_group_started = 0;

        os_memset(go_dev_addr, 0, ETH_ALEN);
        if (ssid->bssid_set)
                os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
        persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
                                               ssid->ssid_len);
        os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);

        if (wpa_s->global->p2p_group_formation == wpa_s)
                wpa_s->global->p2p_group_formation = NULL;

        freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
                (int) wpa_s->assoc_freq;

        ip_addr[0] = '\0';
        if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
                os_snprintf(ip_addr, sizeof(ip_addr), " ip_addr=%u.%u.%u.%u "
                            "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
                            ip[0], ip[1], ip[2], ip[3],
                            ip[4], ip[5], ip[6], ip[7],
                            ip[8], ip[9], ip[10], ip[11]);
        }

        wpas_p2p_group_started(wpa_s, 0, ssid, freq,
                               ssid->passphrase == NULL && ssid->psk_set ?
                               ssid->psk : NULL,
                               ssid->passphrase, go_dev_addr, persistent,
                               ip_addr);

        if (persistent)
                network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
                                                             ssid, go_dev_addr);
        if (network_id < 0)
                network_id = ssid->id;
        wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
}


int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
                          u32 interval1, u32 duration2, u32 interval2)
{
        int ret;

        if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
                return -1;

        if (wpa_s->wpa_state < WPA_ASSOCIATED ||
            wpa_s->current_ssid == NULL ||
            wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
                return -1;

        ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
                               wpa_s->own_addr, wpa_s->assoc_freq,
                               duration1, interval1, duration2, interval2);
        if (ret == 0)
                wpa_s->waiting_presence_resp = 1;

        return ret;
}


int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
                        unsigned int interval)
{
        if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
                return -1;

        return p2p_ext_listen(wpa_s->global->p2p, period, interval);
}


static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
{
        if (wpa_s->current_ssid == NULL) {
                /*
                 * current_ssid can be cleared when P2P client interface gets
                 * disconnected, so assume this interface was used as P2P
                 * client.
                 */
                return 1;
        }
        return wpa_s->current_ssid->p2p_group &&
                wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
}


static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
{
        struct wpa_supplicant *wpa_s = eloop_ctx;

        if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
                wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
                           "disabled");
                return;
        }

        wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
                   "group");
        wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
}


static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
{
        int timeout;

        if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
                wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");

        if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
                return;

        timeout = wpa_s->conf->p2p_group_idle;
        if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
            (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
            timeout = P2P_MAX_CLIENT_IDLE;

        if (timeout == 0)
                return;

        if (timeout < 0) {
                if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
                        timeout = 0; /* special client mode no-timeout */
                else
                        return;
        }

        if (wpa_s->p2p_in_provisioning) {
                /*
                 * Use the normal group formation timeout during the
                 * provisioning phase to avoid terminating this process too
                 * early due to group idle timeout.
                 */
                wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
                           "during provisioning");
                return;
        }

        if (wpa_s->show_group_started) {
                /*
                 * Use the normal group formation timeout between the end of
                 * the provisioning phase and completion of 4-way handshake to
                 * avoid terminating this process too early due to group idle
                 * timeout.
                 */
                wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
                           "while waiting for initial 4-way handshake to "
                           "complete");
                return;
        }

        wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
                   timeout);
        eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
                               wpa_s, NULL);
}


/* Returns 1 if the interface was removed */
int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
                          u16 reason_code, const u8 *ie, size_t ie_len,
                          int locally_generated)
{
        if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
                return 0;

        if (!locally_generated)
                p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
                                 ie_len);

        if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
            wpa_s->current_ssid &&
            wpa_s->current_ssid->p2p_group &&
            wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
                wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
                           "session is ending");
                if (wpas_p2p_group_delete(wpa_s,
                                          P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
                    > 0)
                        return 1;
        }

        return 0;
}


void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
                             u16 reason_code, const u8 *ie, size_t ie_len,
                             int locally_generated)
{
        if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
                return;

        if (!locally_generated)
                p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
                                   ie_len);
}


void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
{
        struct p2p_data *p2p = wpa_s->global->p2p;

        if (p2p == NULL)
                return;

        if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
                return;

        if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
                p2p_set_dev_name(p2p, wpa_s->conf->device_name);

        if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
                p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);

        if (wpa_s->wps &&
            (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
                p2p_set_config_methods(p2p, wpa_s->wps->config_methods);

        if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
                p2p_set_uuid(p2p, wpa_s->wps->uuid);

        if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
                p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
                p2p_set_model_name(p2p, wpa_s->conf->model_name);
                p2p_set_model_number(p2p, wpa_s->conf->model_number);
                p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
        }

        if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
                p2p_set_sec_dev_types(p2p,
                                      (void *) wpa_s->conf->sec_device_type,
                                      wpa_s->conf->num_sec_device_types);

        if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
                int i;
                p2p_remove_wps_vendor_extensions(p2p);
                for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
                        if (wpa_s->conf->wps_vendor_ext[i] == NULL)
                                continue;
                        p2p_add_wps_vendor_extension(
                                p2p, wpa_s->conf->wps_vendor_ext[i]);
                }
        }

        if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
            wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
                char country[3];
                country[0] = wpa_s->conf->country[0];
                country[1] = wpa_s->conf->country[1];
                country[2] = 0x04;
                p2p_set_country(p2p, country);
        }

        if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
                p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
                                     wpa_s->conf->p2p_ssid_postfix ?
                                     os_strlen(wpa_s->conf->p2p_ssid_postfix) :
                                     0);
        }

        if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
                p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);

        if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
                u8 reg_class, channel;
                int ret;
                unsigned int r;
                u8 channel_forced;

                if (wpa_s->conf->p2p_listen_reg_class &&
                    wpa_s->conf->p2p_listen_channel) {
                        reg_class = wpa_s->conf->p2p_listen_reg_class;
                        channel = wpa_s->conf->p2p_listen_channel;
                        channel_forced = 1;
                } else {
                        reg_class = 81;
                        /*
                         * Pick one of the social channels randomly as the
                         * listen channel.
                         */
                        if (os_get_random((u8 *) &r, sizeof(r)) < 0)
                                channel = 1;
                        else
                                channel = 1 + (r % 3) * 5;
                        channel_forced = 0;
                }
                ret = p2p_set_listen_channel(p2p, reg_class, channel,
                                             channel_forced);
                if (ret)
                        wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
                                   "failed: %d", ret);
        }
        if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
                u8 op_reg_class, op_channel, cfg_op_channel;
                int ret = 0;
                unsigned int r;
                if (wpa_s->conf->p2p_oper_reg_class &&
                    wpa_s->conf->p2p_oper_channel) {
                        op_reg_class = wpa_s->conf->p2p_oper_reg_class;
                        op_channel = wpa_s->conf->p2p_oper_channel;
                        cfg_op_channel = 1;
                } else {
                        op_reg_class = 81;
                        /*
                         * Use random operation channel from (1, 6, 11)
                         *if no other preference is indicated.
                         */
                        if (os_get_random((u8 *) &r, sizeof(r)) < 0)
                                op_channel = 1;
                        else
                                op_channel = 1 + (r % 3) * 5;
                        cfg_op_channel = 0;
                }
                ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
                                           cfg_op_channel);
                if (ret)
                        wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
                                   "failed: %d", ret);
        }

        if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
                if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
                                      wpa_s->conf->p2p_pref_chan) < 0) {
                        wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
                                   "update failed");
                }

                if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
                        wpa_printf(MSG_ERROR, "P2P: No GO channel list "
                                   "update failed");
                }
        }

        if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN)
                p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len);
}


int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
                     int duration)
{
        if (!wpa_s->ap_iface)
                return -1;
        return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
                                   duration);
}


int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
{
        if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
                return -1;

        wpa_s->global->cross_connection = enabled;
        p2p_set_cross_connect(wpa_s->global->p2p, enabled);

        if (!enabled) {
                struct wpa_supplicant *iface;

                for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
                {
                        if (iface->cross_connect_enabled == 0)
                                continue;

                        iface->cross_connect_enabled = 0;
                        iface->cross_connect_in_use = 0;
                        wpa_msg_global(iface->parent, MSG_INFO,
                                       P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
                                       iface->ifname,
                                       iface->cross_connect_uplink);
                }
        }

        return 0;
}


static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
{
        struct wpa_supplicant *iface;

        if (!uplink->global->cross_connection)
                return;

        for (iface = uplink->global->ifaces; iface; iface = iface->next) {
                if (!iface->cross_connect_enabled)
                        continue;
                if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
                    0)
                        continue;
                if (iface->ap_iface == NULL)
                        continue;
                if (iface->cross_connect_in_use)
                        continue;

                iface->cross_connect_in_use = 1;
                wpa_msg_global(iface->parent, MSG_INFO,
                               P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
                               iface->ifname, iface->cross_connect_uplink);
        }
}


static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
{
        struct wpa_supplicant *iface;

        for (iface = uplink->global->ifaces; iface; iface = iface->next) {
                if (!iface->cross_connect_enabled)
                        continue;
                if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
                    0)
                        continue;
                if (!iface->cross_connect_in_use)
                        continue;

                wpa_msg_global(iface->parent, MSG_INFO,
                               P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
                               iface->ifname, iface->cross_connect_uplink);
                iface->cross_connect_in_use = 0;
        }
}


void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
{
        if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
            wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
            wpa_s->cross_connect_disallowed)
                wpas_p2p_disable_cross_connect(wpa_s);
        else
                wpas_p2p_enable_cross_connect(wpa_s);
        if (!wpa_s->ap_iface &&
            eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
                wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
}


void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
{
        wpas_p2p_disable_cross_connect(wpa_s);
        if (!wpa_s->ap_iface &&
            !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
                                         wpa_s, NULL))
                wpas_p2p_set_group_idle_timeout(wpa_s);
}


static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
{
        struct wpa_supplicant *iface;

        if (!wpa_s->global->cross_connection)
                return;

        for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
                if (iface == wpa_s)
                        continue;
                if (iface->drv_flags &
                    WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
                        continue;
                if (iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)
                        continue;

                wpa_s->cross_connect_enabled = 1;
                os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
                           sizeof(wpa_s->cross_connect_uplink));
                wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
                           "%s to %s whenever uplink is available",
                           wpa_s->ifname, wpa_s->cross_connect_uplink);

                if (iface->ap_iface || iface->current_ssid == NULL ||
                    iface->current_ssid->mode != WPAS_MODE_INFRA ||
                    iface->cross_connect_disallowed ||
                    iface->wpa_state != WPA_COMPLETED)
                        break;

                wpa_s->cross_connect_in_use = 1;
                wpa_msg_global(wpa_s->parent, MSG_INFO,
                               P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
                               wpa_s->ifname, wpa_s->cross_connect_uplink);
                break;
        }
}


int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
{
        if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
            !wpa_s->p2p_in_provisioning)
                return 0; /* not P2P client operation */

        wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
                   "session overlap");
        if (wpa_s != wpa_s->parent)
                wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
        wpas_p2p_group_formation_failed(wpa_s);
        return 1;
}


void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
{
        struct wpa_supplicant *wpa_s = eloop_ctx;
        wpas_p2p_notif_pbc_overlap(wpa_s);
}


void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
{
        struct p2p_channels chan, cli_chan;
        struct wpa_supplicant *ifs;

        if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
                return;

        os_memset(&chan, 0, sizeof(chan));
        os_memset(&cli_chan, 0, sizeof(cli_chan));
        if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
                wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
                           "channel list");
                return;
        }

        p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);

        for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
                int freq;
                if (!ifs->current_ssid ||
                    !ifs->current_ssid->p2p_group ||
                    (ifs->current_ssid->mode != WPAS_MODE_P2P_GO &&
                     ifs->current_ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION))
                                continue;
                freq = ifs->current_ssid->frequency;
                if (freq_included(&chan, freq)) {
                        wpa_dbg(ifs, MSG_DEBUG,
                                "P2P GO operating frequency %d MHz in valid range",
                                freq);
                        continue;
                }

                wpa_dbg(ifs, MSG_DEBUG,
                        "P2P GO operating in invalid frequency %d MHz", freq);
                /* TODO: Consider using CSA or removing the group within
                 * wpa_supplicant */
                wpa_msg(ifs, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
        }
}


static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
                                     struct wpa_scan_results *scan_res)
{
        wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
}


int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
{
        struct wpa_global *global = wpa_s->global;
        int found = 0;
        const u8 *peer;

        if (global->p2p == NULL)
                return -1;

        wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");

        if (wpa_s->pending_interface_name[0] &&
            !is_zero_ether_addr(wpa_s->pending_interface_addr))
                found = 1;

        peer = p2p_get_go_neg_peer(global->p2p);
        if (peer) {
                wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
                           MACSTR, MAC2STR(peer));
                p2p_unauthorize(global->p2p, peer);
                found = 1;
        }

        if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
                wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
                wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
                found = 1;
        }

        if (wpa_s->pending_pd_before_join) {
                wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
                wpa_s->pending_pd_before_join = 0;
                found = 1;
        }

        wpas_p2p_stop_find(wpa_s);

        for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
                if (wpa_s == global->p2p_group_formation &&
                    (wpa_s->p2p_in_provisioning ||
                     wpa_s->parent->pending_interface_type ==
                     WPA_IF_P2P_CLIENT)) {
                        wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
                                   "formation found - cancelling",
                                   wpa_s->ifname);
                        found = 1;
                        eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
                                             wpa_s->parent, NULL);
                        if (wpa_s->p2p_in_provisioning) {
                                wpas_group_formation_completed(wpa_s, 0);
                                break;
                        }
                        wpas_p2p_group_delete(wpa_s,
                                              P2P_GROUP_REMOVAL_REQUESTED);
                        break;
                } else if (wpa_s->p2p_in_invitation) {
                        wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
                                   wpa_s->ifname);
                        found = 1;
                        wpas_p2p_group_formation_failed(wpa_s);
                }
        }

        if (!found) {
                wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
                return -1;
        }

        return 0;
}


void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
{
        if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
                return;

        wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
                   "being available anymore");
        wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
}


void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
                                   int freq_24, int freq_5, int freq_overall)
{
        struct p2p_data *p2p = wpa_s->global->p2p;
        if (p2p == NULL)
                return;
        p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
}


int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
{
        u8 peer[ETH_ALEN];
        struct p2p_data *p2p = wpa_s->global->p2p;

        if (p2p == NULL)
                return -1;

        if (hwaddr_aton(addr, peer))
                return -1;

        return p2p_unauthorize(p2p, peer);
}


/**
 * wpas_p2p_disconnect - Disconnect from a P2P Group
 * @wpa_s: Pointer to wpa_supplicant data
 * Returns: 0 on success, -1 on failure
 *
 * This can be used to disconnect from a group in which the local end is a P2P
 * Client or to end a P2P Group in case the local end is the Group Owner. If a
 * virtual network interface was created for this group, that interface will be
 * removed. Otherwise, only the configured P2P group network will be removed
 * from the interface.
 */
int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
{

        if (wpa_s == NULL)
                return -1;

        return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
                -1 : 0;
}


int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
{
        int ret;

        if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
                return 0;

        ret = p2p_in_progress(wpa_s->global->p2p);
        if (ret == 0) {
                /*
                 * Check whether there is an ongoing WPS provisioning step (or
                 * other parts of group formation) on another interface since
                 * p2p_in_progress() does not report this to avoid issues for
                 * scans during such provisioning step.
                 */
                if (wpa_s->global->p2p_group_formation &&
                    wpa_s->global->p2p_group_formation != wpa_s) {
                        wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
                                "in group formation",
                                wpa_s->global->p2p_group_formation->ifname);
                        ret = 1;
                }
        }

        if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
                struct os_reltime now;
                os_get_reltime(&now);
                if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
                                       P2P_MAX_INITIAL_CONN_WAIT_GO)) {
                        /* Wait for the first client has expired */
                        wpa_s->global->p2p_go_wait_client.sec = 0;
                } else {
                        wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
                        ret = 1;
                }
        }

        return ret;
}


void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
                              struct wpa_ssid *ssid)
{
        if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
            eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
                                 wpa_s->parent, NULL) > 0) {
                /**
                 * Remove the network by scheduling the group formation
                 * timeout to happen immediately. The teardown code
                 * needs to be scheduled to run asynch later so that we
                 * don't delete data from under ourselves unexpectedly.
                 * Calling wpas_p2p_group_formation_timeout directly
                 * causes a series of crashes in WPS failure scenarios.
                 */
                wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
                           "P2P group network getting removed");
                eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
                                       wpa_s->parent, NULL);
        }
}


struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
                                          const u8 *addr, const u8 *ssid,
                                          size_t ssid_len)
{
        struct wpa_ssid *s;
        size_t i;

        for (s = wpa_s->conf->ssid; s; s = s->next) {
                if (s->disabled != 2)
                        continue;
                if (ssid &&
                    (ssid_len != s->ssid_len ||
                     os_memcmp(ssid, s->ssid, ssid_len) != 0))
                        continue;
                if (addr == NULL) {
                        if (s->mode == WPAS_MODE_P2P_GO)
                                return s;
                        continue;
                }
                if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
                        return s; /* peer is GO in the persistent group */
                if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
                        continue;
                for (i = 0; i < s->num_p2p_clients; i++) {
                        if (os_memcmp(s->p2p_client_list + i * ETH_ALEN,
                                      addr, ETH_ALEN) == 0)
                                return s; /* peer is P2P client in persistent
                                           * group */
                }
        }

        return NULL;
}


void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
                                       const u8 *addr)
{
        if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
                                 wpa_s->parent, NULL) > 0) {
                /*
                 * This can happen if WPS provisioning step is not terminated
                 * cleanly (e.g., P2P Client does not send WSC_Done). Since the
                 * peer was able to connect, there is no need to time out group
                 * formation after this, though. In addition, this is used with
                 * the initial connection wait on the GO as a separate formation
                 * timeout and as such, expected to be hit after the initial WPS
                 * provisioning step.
                 */
                wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");

                if (!wpa_s->p2p_go_group_formation_completed &&
                    !wpa_s->group_formation_reported) {
                        /*
                         * GO has not yet notified group formation success since
                         * the WPS step was not completed cleanly. Do that
                         * notification now since the P2P Client was able to
                         * connect and as such, must have received the
                         * credential from the WPS step.
                         */
                        if (wpa_s->global->p2p)
                                p2p_wps_success_cb(wpa_s->global->p2p, addr);
                        wpas_group_formation_completed(wpa_s, 1);
                }
        }
        if (!wpa_s->p2p_go_group_formation_completed) {
                wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
                wpa_s->p2p_go_group_formation_completed = 1;
                wpa_s->global->p2p_group_formation = NULL;
                wpa_s->p2p_in_provisioning = 0;
                wpa_s->p2p_in_invitation = 0;
        }
        wpa_s->global->p2p_go_wait_client.sec = 0;
        if (addr == NULL)
                return;
        wpas_p2p_add_persistent_group_client(wpa_s, addr);
}


static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
                                        int group_added)
{
        struct wpa_supplicant *group = wpa_s;
        if (wpa_s->global->p2p_group_formation)
                group = wpa_s->global->p2p_group_formation;
        wpa_s = wpa_s->parent;
        offchannel_send_action_done(wpa_s);
        if (group_added)
                wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
        wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
        wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
                         wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
                         0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
                         wpa_s->p2p_persistent_id,
                         wpa_s->p2p_pd_before_go_neg,
                         wpa_s->p2p_go_ht40,
                         wpa_s->p2p_go_vht);
}


int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
{
        if (!wpa_s->p2p_fallback_to_go_neg ||
            wpa_s->p2p_in_provisioning <= 5)
                return 0;

        if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
                return 0; /* peer operating as a GO */

        wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
                "fallback to GO Negotiation");
        wpas_p2p_fallback_to_go_neg(wpa_s, 1);

        return 1;
}


unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
{
        struct wpa_supplicant *ifs;

        if (wpa_s->wpa_state > WPA_SCANNING) {
                wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
                        "concurrent operation",
                        wpa_s->conf->p2p_search_delay);
                return wpa_s->conf->p2p_search_delay;
        }

        dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
                         radio_list) {
                if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
                        wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
                                "delay due to concurrent operation on "
                                "interface %s",
                                wpa_s->conf->p2p_search_delay,
                                ifs->ifname);
                        return wpa_s->conf->p2p_search_delay;
                }
        }

        return 0;
}


static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
                                     struct wpa_ssid *s, const u8 *addr,
                                     int iface_addr)
{
        struct psk_list_entry *psk, *tmp;
        int changed = 0;

        dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
                              list) {
                if ((iface_addr && !psk->p2p &&
                     os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
                    (!iface_addr && psk->p2p &&
                     os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
                        wpa_dbg(wpa_s, MSG_DEBUG,
                                "P2P: Remove persistent group PSK list entry for "
                                MACSTR " p2p=%u",
                                MAC2STR(psk->addr), psk->p2p);
                        dl_list_del(&psk->list);
                        os_free(psk);
                        changed++;
                }
        }

        return changed;
}


void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
                         const u8 *p2p_dev_addr,
                         const u8 *psk, size_t psk_len)
{
        struct wpa_ssid *ssid = wpa_s->current_ssid;
        struct wpa_ssid *persistent;
        struct psk_list_entry *p, *last;

        if (psk_len != sizeof(p->psk))
                return;

        if (p2p_dev_addr) {
                wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
                        " p2p_dev_addr=" MACSTR,
                        MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
                if (is_zero_ether_addr(p2p_dev_addr))
                        p2p_dev_addr = NULL;
        } else {
                wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
                        MAC2STR(mac_addr));
        }

        if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
                wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
                /* To be added to persistent group once created */
                if (wpa_s->global->add_psk == NULL) {
                        wpa_s->global->add_psk = os_zalloc(sizeof(*p));
                        if (wpa_s->global->add_psk == NULL)
                                return;
                }
                p = wpa_s->global->add_psk;
                if (p2p_dev_addr) {
                        p->p2p = 1;
                        os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
                } else {
                        p->p2p = 0;
                        os_memcpy(p->addr, mac_addr, ETH_ALEN);
                }
                os_memcpy(p->psk, psk, psk_len);
                return;
        }

        if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
                wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
                return;
        }

        persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
                                             ssid->ssid_len);
        if (!persistent) {
                wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
                return;
        }

        p = os_zalloc(sizeof(*p));
        if (p == NULL)
                return;
        if (p2p_dev_addr) {
                p->p2p = 1;
                os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
        } else {
                p->p2p = 0;
                os_memcpy(p->addr, mac_addr, ETH_ALEN);
        }
        os_memcpy(p->psk, psk, psk_len);

        if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
            (last = dl_list_last(&persistent->psk_list,
                                 struct psk_list_entry, list))) {
                wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
                        MACSTR " (p2p=%u) to make room for a new one",
                        MAC2STR(last->addr), last->p2p);
                dl_list_del(&last->list);
                os_free(last);
        }

        wpas_p2p_remove_psk_entry(wpa_s->parent, persistent,
                                  p2p_dev_addr ? p2p_dev_addr : mac_addr,
                                  p2p_dev_addr == NULL);
        if (p2p_dev_addr) {
                wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
                        MACSTR, MAC2STR(p2p_dev_addr));
        } else {
                wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
                        MAC2STR(mac_addr));
        }
        dl_list_add(&persistent->psk_list, &p->list);

        if (wpa_s->parent->conf->update_config &&
            wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
                wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
}


static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
                                struct wpa_ssid *s, const u8 *addr,
                                int iface_addr)
{
        int res;

        res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
        if (res > 0 && wpa_s->conf->update_config &&
            wpa_config_write(wpa_s->confname, wpa_s->conf))
                wpa_dbg(wpa_s, MSG_DEBUG,
                        "P2P: Failed to update configuration");
}


static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
                                      const u8 *peer, int iface_addr)
{
        struct hostapd_data *hapd;
        struct hostapd_wpa_psk *psk, *prev, *rem;
        struct sta_info *sta;

        if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
            wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
                return;

        /* Remove per-station PSK entry */
        hapd = wpa_s->ap_iface->bss[0];
        prev = NULL;
        psk = hapd->conf->ssid.wpa_psk;
        while (psk) {
                if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
                    (!iface_addr &&
                     os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
                        wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
                                MACSTR " iface_addr=%d",
                                MAC2STR(peer), iface_addr);
                        if (prev)
                                prev->next = psk->next;
                        else
                                hapd->conf->ssid.wpa_psk = psk->next;
                        rem = psk;
                        psk = psk->next;
                        os_free(rem);
                } else {
                        prev = psk;
                        psk = psk->next;
                }
        }

        /* Disconnect from group */
        if (iface_addr)
                sta = ap_get_sta(hapd, peer);
        else
                sta = ap_get_sta_p2p(hapd, peer);
        if (sta) {
                wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
                        " (iface_addr=%d) from group",
                        MAC2STR(peer), iface_addr);
                hostapd_drv_sta_deauth(hapd, sta->addr,
                                       WLAN_REASON_DEAUTH_LEAVING);
                ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
        }
}


void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
                            int iface_addr)
{
        struct wpa_ssid *s;
        struct wpa_supplicant *w;

        wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));

        /* Remove from any persistent group */
        for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
                if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
                        continue;
                if (!iface_addr)
                        wpas_remove_persistent_peer(wpa_s, s, peer, 0);
                wpas_p2p_remove_psk(wpa_s->parent, s, peer, iface_addr);
        }

        /* Remove from any operating group */
        for (w = wpa_s->global->ifaces; w; w = w->next)
                wpas_p2p_remove_client_go(w, peer, iface_addr);
}


static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
{
        struct wpa_supplicant *wpa_s = eloop_ctx;
        wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
}


static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
{
        struct wpa_supplicant *wpa_s = eloop_ctx;

        wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
        wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
}


int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
                                        struct wpa_ssid *ssid)
{
        struct wpa_supplicant *iface;

        for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
                if (!iface->current_ssid ||
                    iface->current_ssid->frequency == freq ||
                    (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
                     !iface->current_ssid->p2p_group))
                        continue;

                /* Remove the connection with least priority */
                if (!wpas_is_p2p_prioritized(iface)) {
                        /* STA connection has priority over existing
                         * P2P connection, so remove the interface. */
                        wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
                        eloop_register_timeout(0, 0,
                                               wpas_p2p_group_freq_conflict,
                                               iface, NULL);
                        /* If connection in progress is P2P connection, do not
                         * proceed for the connection. */
                        if (wpa_s == iface)
                                return -1;
                        else
                                return 0;
                } else {
                        /* P2P connection has priority, disable the STA network
                         */
                        wpa_supplicant_disable_network(wpa_s->global->ifaces,
                                                       ssid);
                        wpa_msg(wpa_s->global->ifaces, MSG_INFO,
                                WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
                        os_memset(wpa_s->global->ifaces->pending_bssid, 0,
                                  ETH_ALEN);
                        /* If P2P connection is in progress, continue
                         * connecting...*/
                        if (wpa_s == iface)
                                return 0;
                        else
                                return -1;
                }
        }

        return 0;
}


int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
{
        struct wpa_ssid *ssid = wpa_s->current_ssid;

        if (ssid == NULL || !ssid->p2p_group)
                return 0;

        if (wpa_s->p2p_last_4way_hs_fail &&
            wpa_s->p2p_last_4way_hs_fail == ssid) {
                u8 go_dev_addr[ETH_ALEN];
                struct wpa_ssid *persistent;

                if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
                                              ssid->ssid,
                                              ssid->ssid_len) <= 0) {
                        wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
                        goto disconnect;
                }

                wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
                        MACSTR, MAC2STR(go_dev_addr));
                persistent = wpas_p2p_get_persistent(wpa_s->parent, go_dev_addr,
                                                     ssid->ssid,
                                                     ssid->ssid_len);
                if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
                        wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
                        goto disconnect;
                }
                wpa_msg_global(wpa_s->parent, MSG_INFO,
                               P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
                               persistent->id);
        disconnect:
                wpa_s->p2p_last_4way_hs_fail = NULL;
                /*
                 * Remove the group from a timeout to avoid issues with caller
                 * continuing to use the interface if this is on a P2P group
                 * interface.
                 */
                eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
                                       wpa_s, NULL);
                return 1;
        }

        wpa_s->p2p_last_4way_hs_fail = ssid;
        return 0;
}


#ifdef CONFIG_WPS_NFC

static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
                                             struct wpabuf *p2p)
{
        struct wpabuf *ret;
        size_t wsc_len;

        if (p2p == NULL) {
                wpabuf_free(wsc);
                wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
                return NULL;
        }

        wsc_len = wsc ? wpabuf_len(wsc) : 0;
        ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
        if (ret == NULL) {
                wpabuf_free(wsc);
                wpabuf_free(p2p);
                return NULL;
        }

        wpabuf_put_be16(ret, wsc_len);
        if (wsc)
                wpabuf_put_buf(ret, wsc);
        wpabuf_put_be16(ret, wpabuf_len(p2p));
        wpabuf_put_buf(ret, p2p);

        wpabuf_free(wsc);
        wpabuf_free(p2p);
        wpa_hexdump_buf(MSG_DEBUG,
                        "P2P: Generated NFC connection handover message", ret);

        if (ndef && ret) {
                struct wpabuf *tmp;
                tmp = ndef_build_p2p(ret);
                wpabuf_free(ret);
                if (tmp == NULL) {
                        wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
                        return NULL;
                }
                ret = tmp;
        }

        return ret;
}


static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
                             struct wpa_ssid **ssid, u8 *go_dev_addr)
{
        struct wpa_supplicant *iface;

        if (go_dev_addr)
                os_memset(go_dev_addr, 0, ETH_ALEN);
        if (ssid)
                *ssid = NULL;
        for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
                if (iface->wpa_state < WPA_ASSOCIATING ||
                    iface->current_ssid == NULL || iface->assoc_freq == 0 ||
                    !iface->current_ssid->p2p_group ||
                    iface->current_ssid->mode != WPAS_MODE_INFRA)
                        continue;
                if (ssid)
                        *ssid = iface->current_ssid;
                if (go_dev_addr)
                        os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
                return iface->assoc_freq;
        }
        return 0;
}


struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
                                          int ndef)
{
        struct wpabuf *wsc, *p2p;
        struct wpa_ssid *ssid;
        u8 go_dev_addr[ETH_ALEN];
        int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);

        if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
                wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
                return NULL;
        }

        if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
            wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
                           &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
                wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
                return NULL;
        }

        if (cli_freq == 0) {
                wsc = wps_build_nfc_handover_req_p2p(
                        wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
        } else
                wsc = NULL;
        p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
                                         go_dev_addr, ssid ? ssid->ssid : NULL,
                                         ssid ? ssid->ssid_len : 0);

        return wpas_p2p_nfc_handover(ndef, wsc, p2p);
}


struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
                                          int ndef, int tag)
{
        struct wpabuf *wsc, *p2p;
        struct wpa_ssid *ssid;
        u8 go_dev_addr[ETH_ALEN];
        int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);

        if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
                return NULL;

        if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
            wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
                           &wpa_s->conf->wps_nfc_dh_privkey) < 0)
                return NULL;

        if (cli_freq == 0) {
                wsc = wps_build_nfc_handover_sel_p2p(
                        wpa_s->parent->wps,
                        tag ? wpa_s->conf->wps_nfc_dev_pw_id :
                        DEV_PW_NFC_CONNECTION_HANDOVER,
                        wpa_s->conf->wps_nfc_dh_pubkey,
                        tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
        } else
                wsc = NULL;
        p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
                                         go_dev_addr, ssid ? ssid->ssid : NULL,
                                         ssid ? ssid->ssid_len : 0);

        return wpas_p2p_nfc_handover(ndef, wsc, p2p);
}


static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
                                   struct p2p_nfc_params *params)
{
        wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
                   "connection handover (freq=%d)",
                   params->go_freq);

        if (params->go_freq && params->go_ssid_len) {
                wpa_s->p2p_wps_method = WPS_NFC;
                wpa_s->pending_join_wps_method = WPS_NFC;
                os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
                os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
                          ETH_ALEN);
                return wpas_p2p_join_start(wpa_s, params->go_freq,
                                           params->go_ssid,
                                           params->go_ssid_len);
        }

        return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
                                WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
                                params->go_freq, -1, 0, 1, 1);
}


static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
                                  struct p2p_nfc_params *params, int tag)
{
        int res, persistent;
        struct wpa_ssid *ssid;

        wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
                   "connection handover");
        for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
                ssid = wpa_s->current_ssid;
                if (ssid == NULL)
                        continue;
                if (ssid->mode != WPAS_MODE_P2P_GO)
                        continue;
                if (wpa_s->ap_iface == NULL)
                        continue;
                break;
        }
        if (wpa_s == NULL) {
                wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
                return -1;
        }

        if (wpa_s->parent->p2p_oob_dev_pw_id !=
            DEV_PW_NFC_CONNECTION_HANDOVER &&
            !wpa_s->parent->p2p_oob_dev_pw) {
                wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
                return -1;
        }
        res = wpas_ap_wps_add_nfc_pw(
                wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
                wpa_s->parent->p2p_oob_dev_pw,
                wpa_s->parent->p2p_peer_oob_pk_hash_known ?
                wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
        if (res)
                return res;

        if (!tag) {
                wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
                return 0;
        }

        if (!params->peer ||
            !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
                return 0;

        wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
                   " to join", MAC2STR(params->peer->p2p_device_addr));

        wpa_s->global->p2p_invite_group = wpa_s;
        persistent = ssid->p2p_persistent_group &&
                wpas_p2p_get_persistent(wpa_s->parent,
                                        params->peer->p2p_device_addr,
                                        ssid->ssid, ssid->ssid_len);
        wpa_s->parent->pending_invite_ssid_id = -1;

        return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
                          P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
                          ssid->ssid, ssid->ssid_len, ssid->frequency,
                          wpa_s->global->p2p_dev_addr, persistent, 0,
                          wpa_s->parent->p2p_oob_dev_pw_id);
}


static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
                                    struct p2p_nfc_params *params,
                                    int forced_freq)
{
        wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
                   "connection handover");
        return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
                                WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
                                forced_freq, -1, 0, 1, 1);
}


static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
                                    struct p2p_nfc_params *params,
                                    int forced_freq)
{
        int res;

        wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
                   "connection handover");
        res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
                               WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
                               forced_freq, -1, 0, 1, 1);
        if (res)
                return res;

        res = wpas_p2p_listen(wpa_s, 60);
        if (res) {
                p2p_unauthorize(wpa_s->global->p2p,
                                params->peer->p2p_device_addr);
        }

        return res;
}


static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
                                            const struct wpabuf *data,
                                            int sel, int tag, int forced_freq)
{
        const u8 *pos, *end;
        u16 len, id;
        struct p2p_nfc_params params;
        int res;

        os_memset(&params, 0, sizeof(params));
        params.sel = sel;

        wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);

        pos = wpabuf_head(data);
        end = pos + wpabuf_len(data);

        if (end - pos < 2) {
                wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
                           "attributes");
                return -1;
        }
        len = WPA_GET_BE16(pos);
        pos += 2;
        if (len > end - pos) {
                wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
                           "attributes");
                return -1;
        }
        params.wsc_attr = pos;
        params.wsc_len = len;
        pos += len;

        if (end - pos < 2) {
                wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
                           "attributes");
                return -1;
        }
        len = WPA_GET_BE16(pos);
        pos += 2;
        if (len > end - pos) {
                wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
                           "attributes");
                return -1;
        }
        params.p2p_attr = pos;
        params.p2p_len = len;
        pos += len;

        wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
                    params.wsc_attr, params.wsc_len);
        wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
                    params.p2p_attr, params.p2p_len);
        if (pos < end) {
                wpa_hexdump(MSG_DEBUG,
                            "P2P: Ignored extra data after P2P attributes",
                            pos, end - pos);
        }

        res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
        if (res)
                return res;

        if (params.next_step == NO_ACTION)
                return 0;

        if (params.next_step == BOTH_GO) {
                wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
                        MAC2STR(params.peer->p2p_device_addr));
                return 0;
        }

        if (params.next_step == PEER_CLIENT) {
                if (!is_zero_ether_addr(params.go_dev_addr)) {
                        wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
                                "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
                                " ssid=\"%s\"",
                                MAC2STR(params.peer->p2p_device_addr),
                                params.go_freq,
                                MAC2STR(params.go_dev_addr),
                                wpa_ssid_txt(params.go_ssid,
                                             params.go_ssid_len));
                } else {
                        wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
                                "peer=" MACSTR " freq=%d",
                                MAC2STR(params.peer->p2p_device_addr),
                                params.go_freq);
                }
                return 0;
        }

        if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
                wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
                        MACSTR, MAC2STR(params.peer->p2p_device_addr));
                return 0;
        }

        wpabuf_free(wpa_s->p2p_oob_dev_pw);
        wpa_s->p2p_oob_dev_pw = NULL;

        if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
                wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
                           "received");
                return -1;
        }

        id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
        wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
        wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
                    params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
        os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
                  params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
        wpa_s->p2p_peer_oob_pk_hash_known = 1;

        if (tag) {
                if (id < 0x10) {
                        wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
                                   "peer OOB Device Password Id %u", id);
                        return -1;
                }
                wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
                           "Device Password Id %u", id);
                wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
                                params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
                                params.oob_dev_pw_len -
                                WPS_OOB_PUBKEY_HASH_LEN - 2);
                wpa_s->p2p_oob_dev_pw_id = id;
                wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
                        params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
                        params.oob_dev_pw_len -
                        WPS_OOB_PUBKEY_HASH_LEN - 2);
                if (wpa_s->p2p_oob_dev_pw == NULL)
                        return -1;

                if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
                    wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
                                   &wpa_s->conf->wps_nfc_dh_privkey) < 0)
                        return -1;
        } else {
                wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
                           "without Device Password");
                wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
        }

        switch (params.next_step) {
        case NO_ACTION:
        case BOTH_GO:
        case PEER_CLIENT:
                /* already covered above */
                return 0;
        case JOIN_GROUP:
                return wpas_p2p_nfc_join_group(wpa_s, &params);
        case AUTH_JOIN:
                return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
        case INIT_GO_NEG:
                return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
        case RESP_GO_NEG:
                /* TODO: use own OOB Dev Pw */
                return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
        }

        return -1;
}


int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
                             const struct wpabuf *data, int forced_freq)
{
        if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
                return -1;

        return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
}


int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
                                 const struct wpabuf *req,
                                 const struct wpabuf *sel, int forced_freq)
{
        struct wpabuf *tmp;
        int ret;

        if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
                return -1;

        wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");

        wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
                          wpabuf_head(req), wpabuf_len(req));
        wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
                          wpabuf_head(sel), wpabuf_len(sel));
        if (forced_freq)
                wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
        tmp = ndef_parse_p2p(init ? sel : req);
        if (tmp == NULL) {
                wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
                return -1;
        }

        ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
                                               forced_freq);
        wpabuf_free(tmp);

        return ret;
}


int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
{
        const u8 *if_addr;
        int go_intent = wpa_s->conf->p2p_go_intent;
        struct wpa_supplicant *iface;

        if (wpa_s->global->p2p == NULL)
                return -1;

        if (!enabled) {
                wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
                for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
                {
                        if (!iface->ap_iface)
                                continue;
                        hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
                }
                p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
                                                 0, NULL);
                if (wpa_s->p2p_nfc_tag_enabled)
                        wpas_p2p_remove_pending_group_interface(wpa_s);
                wpa_s->p2p_nfc_tag_enabled = 0;
                return 0;
        }

        if (wpa_s->global->p2p_disabled)
                return -1;

        if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
            wpa_s->conf->wps_nfc_dh_privkey == NULL ||
            wpa_s->conf->wps_nfc_dev_pw == NULL ||
            wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
                wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
                           "to allow static handover cases");
                return -1;
        }

        wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");

        wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
        wpabuf_free(wpa_s->p2p_oob_dev_pw);
        wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
        if (wpa_s->p2p_oob_dev_pw == NULL)
                return -1;
        wpa_s->p2p_peer_oob_pk_hash_known = 0;

        if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
            wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
                /*
                 * P2P Group Interface present and the command came on group
                 * interface, so enable the token for the current interface.
                 */
                wpa_s->create_p2p_iface = 0;
        } else {
                wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
        }

        if (wpa_s->create_p2p_iface) {
                enum wpa_driver_if_type iftype;
                /* Prepare to add a new interface for the group */
                iftype = WPA_IF_P2P_GROUP;
                if (go_intent == 15)
                        iftype = WPA_IF_P2P_GO;
                if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
                        wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
                                   "interface for the group");
                        return -1;
                }

                if_addr = wpa_s->pending_interface_addr;
        } else
                if_addr = wpa_s->own_addr;

        wpa_s->p2p_nfc_tag_enabled = enabled;

        for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
                struct hostapd_data *hapd;
                if (iface->ap_iface == NULL)
                        continue;
                hapd = iface->ap_iface->bss[0];
                wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
                hapd->conf->wps_nfc_dh_pubkey =
                        wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
                wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
                hapd->conf->wps_nfc_dh_privkey =
                        wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
                wpabuf_free(hapd->conf->wps_nfc_dev_pw);
                hapd->conf->wps_nfc_dev_pw =
                        wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
                hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;

                if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
                        wpa_dbg(iface, MSG_DEBUG,
                                "P2P: Failed to enable NFC Tag for GO");
                }
        }
        p2p_set_authorized_oob_dev_pw_id(
                wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
                if_addr);

        return 0;
}

#endif /* CONFIG_WPS_NFC */


static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
                                             struct wpa_used_freq_data *freqs,
                                             unsigned int num)
{
        u8 curr_chan, cand, chan;
        unsigned int i;

        curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
        for (i = 0, cand = 0; i < num; i++) {
                ieee80211_freq_to_chan(freqs[i].freq, &chan);
                if (curr_chan == chan) {
                        cand = 0;
                        break;
                }

                if (chan == 1 || chan == 6 || chan == 11)
                        cand = chan;
        }

        if (cand) {
                wpa_dbg(wpa_s, MSG_DEBUG,
                        "P2P: Update Listen channel to %u baased on operating channel",
                        cand);
                p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
        }
}


void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
{
        struct wpa_used_freq_data *freqs;
        unsigned int num = wpa_s->num_multichan_concurrent;

        if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
                return;

        /*
         * If possible, optimize the Listen channel to be a channel that is
         * already used by one of the other interfaces.
         */
        if (!wpa_s->conf->p2p_optimize_listen_chan)
                return;

        if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
                return;

        freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
        if (!freqs)
                return;

        num = get_shared_radio_freqs_data(wpa_s, freqs, num);

        wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
        os_free(freqs);
}


void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
{
        if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
                wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
                        "the management interface is being removed");
                wpas_p2p_deinit_global(wpa_s->global);
        }
}


void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
{
        if (wpa_s->ap_iface->bss)
                wpa_s->ap_iface->bss[0]->p2p_group = NULL;
        wpas_p2p_group_deinit(wpa_s);
}