nl80211: Extend bridge add/del operations for secondary BSSes

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

/*
 * wpa_supplicant - P2P
 * Copyright (c) 2009-2010, Atheros Communications
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * Alternatively, this software may be distributed under the terms of BSD
 * license.
 *
 * See README and COPYING 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/p2p_hostapd.h"
#include "wpa_supplicant_i.h"
#include "driver_i.h"
#include "ap.h"
#include "config_ssid.h"
#include "config.h"
#include "mlme.h"
#include "notify.h"
#include "scan.h"
#include "bss.h"
#include "wps_supplicant.h"
#include "p2p_supplicant.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


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);
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);
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_scan_res_handler(struct wpa_supplicant *wpa_s,
                                      struct wpa_scan_results *scan_res)
{
        size_t i;

        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];
                if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
                                         bss->freq, bss->level,
                                         (const u8 *) (bss + 1),
                                         bss->ie_len) > 0)
                        break;
        }

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


static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq)
{
        struct wpa_supplicant *wpa_s = ctx;
        struct wpa_driver_scan_params params;
        int ret;
        struct wpabuf *wps_ie, *ies;
        int social_channels[] = { 2412, 2437, 2462, 0, 0 };

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

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

        /* P2P Wildcard SSID */
        params.num_ssids = 1;
        params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
        params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;

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

        ies = wpabuf_alloc(wpabuf_len(wps_ie) + 100);
        if (ies == NULL) {
                wpabuf_free(wps_ie);
                return -1;
        }
        wpabuf_put_buf(ies, wps_ie);
        wpabuf_free(wps_ie);

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

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

        switch (type) {
        case P2P_SCAN_SOCIAL:
                params.freqs = social_channels;
                break;
        case P2P_SCAN_FULL:
                break;
        case P2P_SCAN_SPECIFIC:
                social_channels[0] = freq;
                social_channels[1] = 0;
                params.freqs = social_channels;
                break;
        case P2P_SCAN_SOCIAL_PLUS_ONE:
                social_channels[3] = freq;
                params.freqs = social_channels;
                break;
        }

        wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
        if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
                ret = ieee80211_sta_req_scan(wpa_s, &params);
        else
                ret = wpa_drv_scan(wpa_s, &params);

        wpabuf_free(ies);

        return ret;
}


#ifdef CONFIG_CLIENT_MLME
static void p2p_rx_action_mlme(void *ctx, const u8 *buf, size_t len, int freq)
{
        struct wpa_supplicant *wpa_s = ctx;
        const struct ieee80211_mgmt *mgmt;
        size_t hdr_len;

        if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
                return;
        mgmt = (const struct ieee80211_mgmt *) buf;
        hdr_len = (const u8 *) &mgmt->u.action.u.vs_public_action.action - buf;
        if (hdr_len > len)
                return;
        p2p_rx_action(wpa_s->global->p2p, mgmt->da, mgmt->sa, mgmt->bssid,
                      mgmt->u.action.category,
                      &mgmt->u.action.u.vs_public_action.action,
                      len - hdr_len, freq);
}
#endif /* CONFIG_CLIENT_MLME */


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 wpas_p2p_group_delete(struct wpa_supplicant *wpa_s)
{
        struct wpa_ssid *ssid;
        char *gtype;
        const char *reason;

        eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);

        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.
                 */
                ssid = wpa_s->conf->ssid;
                while (ssid) {
                        if (ssid->p2p_group &&
                            (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
                             (ssid->key_mgmt & WPA_KEY_MGMT_WPS)))
                                break;
                        ssid = ssid->next;
                }
        }
        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;
                wpa_supplicant_deauthenticate(wpa_s,
                                              WLAN_REASON_DEAUTH_LEAVING);
                gtype = "client";
        } else
                gtype = "GO";
        if (wpa_s->cross_connect_in_use) {
                wpa_s->cross_connect_in_use = 0;
                wpa_msg(wpa_s->parent, MSG_INFO,
                        P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
                        wpa_s->ifname, wpa_s->cross_connect_uplink);
        }
        switch (wpa_s->removal_reason) {
        case P2P_GROUP_REMOVAL_REQUESTED:
                reason = " reason=REQUESTED";
                break;
        case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
                reason = " reason=IDLE";
                break;
        case P2P_GROUP_REMOVAL_UNAVAILABLE:
                reason = " reason=UNAVAILABLE";
                break;
        default:
                reason = "";
                break;
        }
        wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_REMOVED "%s %s%s",
                wpa_s->ifname, gtype, reason);

        if (ssid)
                wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);

        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);
                wpa_supplicant_remove_iface(wpa_s->global, wpa_s);
                wpa_s = global->ifaces;
                if (wpa_s && ifname)
                        wpa_drv_if_remove(wpa_s, type, ifname);
                os_free(ifname);
                return;
        }

        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_s->current_ssid = NULL;
                wpas_notify_network_removed(wpa_s, ssid);
                wpa_config_remove_network(wpa_s->conf, id);
                wpa_supplicant_clear_status(wpa_s);
        } else {
                wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
                           "found");
        }
        wpa_supplicant_ap_deinit(wpa_s);
}


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) {
                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) {
                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 void 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;
                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);
        }

#ifndef CONFIG_NO_CONFIG_WRITE
        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");
        }
#endif /* CONFIG_NO_CONFIG_WRITE */
}


static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
                                           int success)
{
        struct wpa_ssid *ssid;
        const char *ssid_txt;
        int client;
        int persistent;
        u8 go_dev_addr[ETH_ALEN];

        /*
         * 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;
        wpa_s->global->p2p_group_formation = NULL;
        wpa_s->p2p_in_provisioning = 0;

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

        wpa_msg(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) {
                ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
                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->parent->own_addr,
                                  ETH_ALEN);
                } else
                        persistent = wpas_p2p_persistent_group(wpa_s,
                                                               go_dev_addr,
                                                               ssid->ssid,
                                                               ssid->ssid_len);
        } else {
                ssid_txt = "";
                client = wpa_s->p2p_group_interface ==
                        P2P_GROUP_INTERFACE_CLIENT;
        }

        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 if (ssid && ssid->passphrase == NULL && ssid->psk_set) {
                char psk[65];
                wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
                wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
                        "%s GO ssid=\"%s\" freq=%d psk=%s go_dev_addr=" MACSTR
                        "%s",
                        wpa_s->ifname, ssid_txt, ssid->frequency, psk,
                        MAC2STR(go_dev_addr),
                        persistent ? " [PERSISTENT]" : "");
                wpas_p2p_cross_connect_setup(wpa_s);
                wpas_p2p_set_group_idle_timeout(wpa_s);
        } else {
                wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
                        "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
                        "go_dev_addr=" MACSTR "%s",
                        wpa_s->ifname, ssid_txt, ssid ? ssid->frequency : 0,
                        ssid && ssid->passphrase ? ssid->passphrase : "",
                        MAC2STR(go_dev_addr),
                        persistent ? " [PERSISTENT]" : "");
                wpas_p2p_cross_connect_setup(wpa_s);
                wpas_p2p_set_group_idle_timeout(wpa_s);
        }

        if (persistent)
                wpas_p2p_store_persistent_group(wpa_s->parent, ssid,
                                                go_dev_addr);
}


static struct wpa_supplicant *
wpas_get_tx_interface(struct wpa_supplicant *wpa_s, const u8 *src)
{
        struct wpa_supplicant *iface;

        if (os_memcmp(src, wpa_s->own_addr, ETH_ALEN) == 0)
                return wpa_s;

        /*
         * Try to find a group interface that matches with the source address.
         */
        iface = wpa_s->global->ifaces;
        while (iface) {
                if (os_memcmp(wpa_s->pending_action_src,
                              iface->own_addr, ETH_ALEN) == 0)
                        break;
                iface = iface->next;
        }
        if (iface) {
                wpa_printf(MSG_DEBUG, "P2P: Use group interface %s "
                           "instead of interface %s for Action TX",
                           iface->ifname, wpa_s->ifname);
                return iface;
        }

        return wpa_s;
}


static void wpas_send_action_cb(void *eloop_ctx, void *timeout_ctx)
{
        struct wpa_supplicant *wpa_s = eloop_ctx;
        struct wpa_supplicant *iface;
        int res;
        int without_roc;

        without_roc = wpa_s->pending_action_without_roc;
        wpa_s->pending_action_without_roc = 0;
        wpa_printf(MSG_DEBUG, "P2P: Send Action callback (without_roc=%d "
                   "pending_action_tx=%p)",
                   without_roc, wpa_s->pending_action_tx);

        if (wpa_s->pending_action_tx == NULL)
                return;

        /*
         * This call is likely going to be on the P2P device instance if the
         * driver uses a separate interface for that purpose. However, some
         * Action frames are actually sent within a P2P Group and when that is
         * the case, we need to follow power saving (e.g., GO buffering the
         * frame for a client in PS mode or a client following the advertised
         * NoA from its GO). To make that easier for the driver, select the
         * correct group interface here.
         */
        iface = wpas_get_tx_interface(wpa_s, wpa_s->pending_action_src);

        if (wpa_s->off_channel_freq != wpa_s->pending_action_freq &&
            wpa_s->pending_action_freq != 0 &&
            wpa_s->pending_action_freq != iface->assoc_freq) {
                wpa_printf(MSG_DEBUG, "P2P: Pending Action frame TX "
                           "waiting for another freq=%u (off_channel_freq=%u "
                           "assoc_freq=%u)",
                           wpa_s->pending_action_freq,
                           wpa_s->off_channel_freq,
                           iface->assoc_freq);
                if (without_roc && wpa_s->off_channel_freq == 0) {
                        /*
                         * We may get here if wpas_send_action() found us to be
                         * on the correct channel, but remain-on-channel cancel
                         * event was received before getting here.
                         */
                        wpa_printf(MSG_DEBUG, "P2P: Schedule "
                                   "remain-on-channel to send Action frame");
                        if (wpa_drv_remain_on_channel(
                                    wpa_s, wpa_s->pending_action_freq, 200) <
                            0) {
                                wpa_printf(MSG_DEBUG, "P2P: Failed to request "
                                           "driver to remain on channel (%u "
                                           "MHz) for Action Frame TX",
                                           wpa_s->pending_action_freq);
                        } else {
                                wpa_s->off_channel_freq = 0;
                                wpa_s->roc_waiting_drv_freq =
                                        wpa_s->pending_action_freq;
                        }
                }
                return;
        }

        wpa_printf(MSG_DEBUG, "P2P: Sending pending Action frame to "
                   MACSTR " using interface %s",
                   MAC2STR(wpa_s->pending_action_dst), iface->ifname);
        res = wpa_drv_send_action(iface, wpa_s->pending_action_freq, 0,
                                  wpa_s->pending_action_dst,
                                  wpa_s->pending_action_src,
                                  wpa_s->pending_action_bssid,
                                  wpabuf_head(wpa_s->pending_action_tx),
                                  wpabuf_len(wpa_s->pending_action_tx));
        if (res) {
                wpa_printf(MSG_DEBUG, "P2P: Failed to send the pending "
                           "Action frame");
                /*
                 * Use fake TX status event to allow P2P state machine to
                 * continue.
                 */
                wpas_send_action_tx_status(
                        wpa_s, wpa_s->pending_action_dst,
                        wpabuf_head(wpa_s->pending_action_tx),
                        wpabuf_len(wpa_s->pending_action_tx),
                        P2P_SEND_ACTION_FAILED);
        }
}


void wpas_send_action_tx_status(struct wpa_supplicant *wpa_s, const u8 *dst,
                                const u8 *data, size_t data_len,
                                enum p2p_send_action_result result)
{
        if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
                return;
        if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
                return;

        if (wpa_s->pending_action_tx == NULL) {
                wpa_printf(MSG_DEBUG, "P2P: Ignore Action TX status - no "
                           "pending operation");
                return;
        }

        if (os_memcmp(dst, wpa_s->pending_action_dst, ETH_ALEN) != 0) {
                wpa_printf(MSG_DEBUG, "P2P: Ignore Action TX status - unknown "
                           "destination address");
                return;
        }

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

        p2p_send_action_cb(wpa_s->global->p2p, wpa_s->pending_action_freq,
                           wpa_s->pending_action_dst,
                           wpa_s->pending_action_src,
                           wpa_s->pending_action_bssid,
                           result);

        if (wpa_s->pending_pd_before_join &&
            (os_memcmp(wpa_s->pending_action_dst, wpa_s->pending_join_dev_addr,
                       ETH_ALEN) == 0 ||
             os_memcmp(wpa_s->pending_action_dst,
                       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);
        }
}


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;

        wpa_printf(MSG_DEBUG, "P2P: Send action frame: freq=%d dst=" MACSTR
                   " src=" MACSTR " bssid=" MACSTR " len=%d",
                   freq, MAC2STR(dst), MAC2STR(src), MAC2STR(bssid),
                   (int) len);

        if (wpa_s->pending_action_tx) {
                wpa_printf(MSG_DEBUG, "P2P: Dropped pending Action frame TX "
                           "to " MACSTR, MAC2STR(wpa_s->pending_action_dst));
                wpabuf_free(wpa_s->pending_action_tx);
        }
        wpa_s->pending_action_tx = wpabuf_alloc(len);
        if (wpa_s->pending_action_tx == NULL) {
                wpa_printf(MSG_DEBUG, "P2P: Failed to allocate Action frame "
                           "TX buffer (len=%llu)", (unsigned long long) len);
                return -1;
        }
        wpabuf_put_data(wpa_s->pending_action_tx, buf, len);
        os_memcpy(wpa_s->pending_action_src, src, ETH_ALEN);
        os_memcpy(wpa_s->pending_action_dst, dst, ETH_ALEN);
        os_memcpy(wpa_s->pending_action_bssid, bssid, ETH_ALEN);
        wpa_s->pending_action_freq = freq;

        if (freq != 0 && wpa_s->drv_flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) {
                struct wpa_supplicant *iface;

                iface = wpas_get_tx_interface(wpa_s, wpa_s->pending_action_src);
                wpa_s->action_tx_wait_time = wait_time;

                return wpa_drv_send_action(iface, wpa_s->pending_action_freq,
                                        wait_time, wpa_s->pending_action_dst,
                                        wpa_s->pending_action_src,
                                        wpa_s->pending_action_bssid,
                                        wpabuf_head(wpa_s->pending_action_tx),
                                        wpabuf_len(wpa_s->pending_action_tx));
        }

        if (freq) {
                struct wpa_supplicant *tx_iface;
                tx_iface = wpas_get_tx_interface(wpa_s, src);
                if (tx_iface->assoc_freq == freq) {
                        wpa_printf(MSG_DEBUG, "P2P: Already on requested "
                                   "channel (TX interface operating channel)");
                        freq = 0;
                }
        }

        if (wpa_s->off_channel_freq == freq || freq == 0) {
                wpa_printf(MSG_DEBUG, "P2P: Already on requested channel; "
                           "send Action frame immediately");
                /* TODO: Would there ever be need to extend the current
                 * duration on the channel? */
                wpa_s->pending_action_without_roc = 1;
                eloop_cancel_timeout(wpas_send_action_cb, wpa_s, NULL);
                eloop_register_timeout(0, 0, wpas_send_action_cb, wpa_s, NULL);
                return 0;
        }
        wpa_s->pending_action_without_roc = 0;

        if (wpa_s->roc_waiting_drv_freq == freq) {
                wpa_printf(MSG_DEBUG, "P2P: Already waiting for driver to get "
                           "to frequency %u MHz; continue waiting to send the "
                           "Action frame", freq);
                return 0;
        }

        wpa_printf(MSG_DEBUG, "P2P: Schedule Action frame to be transmitted "
                   "once the driver gets to the requested channel");
        if (wait_time > wpa_s->max_remain_on_chan)
                wait_time = wpa_s->max_remain_on_chan;
        if (wpa_drv_remain_on_channel(wpa_s, freq, wait_time) < 0) {
                wpa_printf(MSG_DEBUG, "P2P: Failed to request driver "
                           "to remain on channel (%u MHz) for Action "
                           "Frame TX", freq);
                return -1;
        }
        wpa_s->off_channel_freq = 0;
        wpa_s->roc_waiting_drv_freq = freq;

        return 0;
}


static void wpas_send_action_done(void *ctx)
{
        struct wpa_supplicant *wpa_s = ctx;
        wpa_printf(MSG_DEBUG, "P2P: Action frame sequence done notification");
        wpabuf_free(wpa_s->pending_action_tx);
        wpa_s->pending_action_tx = NULL;
        if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) {
                if (wpa_s->action_tx_wait_time)
                        wpa_drv_send_action_cancel_wait(wpa_s);
                wpa_s->off_channel_freq = 0;
        } else 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;
        }
}


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_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR,
                   MAC2STR(res->peer_interface_addr));
        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);
        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 p2p_go_configured(void *ctx, void *data)
{
        struct wpa_supplicant *wpa_s = ctx;
        struct p2p_go_neg_results *params = data;
        struct wpa_ssid *ssid;

        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;
                wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
                        "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
                        "go_dev_addr=" MACSTR "%s",
                        wpa_s->ifname,
                        wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
                        ssid->frequency,
                        params->passphrase ? params->passphrase : "",
                        MAC2STR(wpa_s->parent->own_addr),
                        params->persistent_group ? " [PERSISTENT]" : "");
                if (params->persistent_group)
                        wpas_p2p_store_persistent_group(
                                wpa_s->parent, ssid,
                                wpa_s->parent->own_addr);
                wpas_p2p_cross_connect_setup(wpa_s);
                wpas_p2p_set_group_idle_timeout(wpa_s);
                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,
                                          NULL);
        else if (wpa_s->p2p_pin[0])
                wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
                                          wpa_s->p2p_pin, NULL, 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;

        if (wpas_copy_go_neg_results(wpa_s, params) < 0)
                return;

        ssid = wpa_config_add_network(wpa_s->conf);
        if (ssid == NULL)
                return;

        wpas_notify_network_added(wpa_s, ssid);
        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->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->passphrase = os_strdup(params->passphrase);

        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->connect_without_scan = 1;
        wpa_s->reassociate = 1;
        wpa_s->disconnected = 0;
        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(device_type);
        C(config_methods);
#undef C

        d->p2p_group_idle = s->p2p_group_idle;
        d->p2p_intra_bss = s->p2p_intra_bss;
}


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;
        }

        os_snprintf(ifname, sizeof(ifname), "p2p-%s-%d", wpa_s->ifname,
                    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, sizeof(ifname), "p2p-%d",
                            wpa_s->p2p_group_idx);
        }
        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;
        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");
        if (wpa_s->global->p2p)
                p2p_group_formation_failed(wpa_s->global->p2p);
        else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
                wpa_drv_p2p_group_formation_failed(wpa_s);
        wpas_group_formation_completed(wpa_s, 0);
}


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

        wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS);
        wpas_notify_p2p_go_neg_completed(wpa_s, P2P_SC_SUCCESS);

        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);
                        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);
}


void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id)
{
        struct wpa_supplicant *wpa_s = ctx;
        wpa_msg(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);
}


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

        wpa_msg(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",
                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);

        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;

        wpas_notify_p2p_device_lost(wpa_s, dev_addr);
}


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;

        wpa_drv_set_ap_wps_ie(wpa_s, NULL, 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");
                return -1;
        }

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

        if (wpa_drv_remain_on_channel(wpa_s, freq, duration) < 0) {
                wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
                           "to remain on channel (%u MHz) for Listen "
                           "state", freq);
                wpa_s->pending_listen_freq = 0;
                return -1;
        }
        wpa_s->off_channel_freq = 0;
        wpa_s->roc_waiting_drv_freq = freq;

        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);
}


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));
}


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 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;
        struct wpabuf buf;
        u8 *len_pos;

        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;
        }

        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);

        wpabuf_set(&buf, query, query_len);
        bsrv = wpas_p2p_service_get_bonjour(wpa_s, &buf);
        if (bsrv == NULL) {
                wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour 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);
                return;
        }

        /* 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));

        if (wpabuf_tailroom(resp) >=
            wpabuf_len(bsrv->query) + 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 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);
        }

        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);
}


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)
                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;
                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);
}


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);
}


void * wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst,
                           const struct wpabuf *tlvs)
{
        if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
                return (void *) wpa_drv_p2p_sd_request(wpa_s, dst, tlvs);
        if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
                return NULL;
        return p2p_sd_request(wpa_s->global->p2p, dst, tlvs);
}


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

        tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query));
        if (tlvs == NULL)
                return NULL;
        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;
}


int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, void *req)
{
        if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
                return wpa_drv_p2p_sd_cancel_request(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, 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->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
                wpa_drv_p2p_sd_response(wpa_s, freq, dst, dialog_token,
                                        resp_tlvs);
                return;
        }
        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->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
                wpa_drv_p2p_service_update(wpa_s);
                return;
        }
        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 = wpas_p2p_service_get_bonjour(wpa_s, query);
        if (bsrv) {
                wpabuf_free(query);
                wpabuf_free(bsrv->resp);
                bsrv->resp = resp;
                return 0;
        }

        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(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(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR "%s",
                MAC2STR(peer), params);
}


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)
{
        struct wpa_supplicant *wpa_s = ctx;
        char devtype[WPS_DEV_TYPE_BUFSIZE];
        char params[200];
        u8 empty_dev_type[8];
        unsigned int generated_pin = 0;

        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",
                    MAC2STR(dev_addr),
                    wps_dev_type_bin2str(pri_dev_type, devtype,
                                         sizeof(devtype)),
                    dev_name, supp_config_methods, dev_capab, group_capab);
        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(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ MACSTR
                        "%s", MAC2STR(peer), params);
}


void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
{
        struct wpa_supplicant *wpa_s = ctx;
        unsigned int generated_pin = 0;

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

        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);
        }
}


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)
{
        struct wpa_supplicant *wpa_s = ctx;
        struct wpa_ssid *s;
        u8 cur_bssid[ETH_ALEN];
        int res;
        struct wpa_supplicant *grp;

        if (!persistent_group) {
                wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
                           " to join an active group", MAC2STR(sa));
                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;
                }
                /*
                 * 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 (!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:
        if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, cur_bssid) == 0 &&
            wpa_s->assoc_freq) {
                wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match "
                           "the channel we are already using");
                *force_freq = wpa_s->assoc_freq;
        }

        res = wpa_drv_shared_freq(wpa_s);
        if (res > 0) {
                wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match "
                           "with the channel we are already using on a "
                           "shared interface");
                *force_freq = res;
        }

        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",
                           MAC2STR(sa), op_freq);
                if (s) {
                        wpas_p2p_group_add_persistent(
                                wpa_s, s, s->mode == WPAS_MODE_P2P_GO, 0);
                } else if (bssid) {
                        wpas_p2p_join(wpa_s, bssid, go_dev_addr,
                                      wpa_s->p2p_wps_method);
                }
                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(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(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
                                "sa=" MACSTR " go_dev_addr=" MACSTR
                                " unknown-network",
                                MAC2STR(sa), MAC2STR(go_dev_addr));
                }
                return;
        }

        wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED "sa=" MACSTR
                " persistent=%d", MAC2STR(sa), s->id);
}


static void wpas_invitation_result(void *ctx, int status, const u8 *bssid)
{
        struct wpa_supplicant *wpa_s = ctx;
        struct wpa_ssid *ssid;

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

        if (wpa_s->pending_invite_ssid_id == -1)
                return; /* Invitation to active group */

        if (status != P2P_SC_SUCCESS) {
                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;
        }

        wpas_p2p_group_add_persistent(wpa_s, ssid,
                                      ssid->mode == WPAS_MODE_P2P_GO, 0);
}


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

        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 = 11;
        for (i = 0; i < 11; i++)
                chan->reg_class[cla].channel[i] = i + 1;
        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 = 4;
        chan->reg_class[cla].channel[0] = 36;
        chan->reg_class[cla].channel[1] = 40;
        chan->reg_class[cla].channel[2] = 44;
        chan->reg_class[cla].channel[3] = 48;
        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 = 4;
        chan->reg_class[cla].channel[0] = 149;
        chan->reg_class[cla].channel[1] = 153;
        chan->reg_class[cla].channel[2] = 157;
        chan->reg_class[cla].channel[3] = 161;
        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;
}


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

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

        return 0;
}


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 } bw;
};

static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
                                   struct p2p_channels *chan)
{
        struct hostapd_hw_modes *modes, *mode;
        u16 num_modes, flags;
        int cla, op;
        struct p2p_oper_class_map op_class[] = {
                { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
                { HOSTAPD_MODE_IEEE80211G, 82, 14, 14, 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 },
                { -1, 0, 0, 0, 0, BW20 }
        };

        modes = wpa_drv_get_hw_feature_data(wpa_s, &num_modes, &flags);
        if (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);
        }

        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;

                mode = get_mode(modes, num_modes, o->mode);
                if (mode == NULL)
                        continue;
                for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
                        int flag;
                        if (!has_channel(mode, ch, &flag))
                                continue;
                        if (o->bw == BW40MINUS &&
                            (!(flag & HOSTAPD_CHAN_HT40MINUS) ||
                             !has_channel(mode, ch - 4, NULL)))
                                continue;
                        if (o->bw == BW40PLUS &&
                            (!(flag & HOSTAPD_CHAN_HT40PLUS) ||
                             !has_channel(mode, ch + 4, NULL)))
                                continue;
                        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++;
                }
                if (reg) {
                        wpa_hexdump(MSG_DEBUG, "P2P: Channels",
                                    reg->channel, reg->channels);
                }
        }

        chan->reg_classes = cla;

        ieee80211_sta_free_hw_features(modes, num_modes);

        return 0;
}


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);
}


/**
 * 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;
        unsigned int r;
        int i;

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

#ifdef CONFIG_CLIENT_MLME
        if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)) {
                wpa_s->mlme.public_action_cb = p2p_rx_action_mlme;
                wpa_s->mlme.public_action_cb_ctx = wpa_s;
        }
#endif /* CONFIG_CLIENT_MLME */

        if (wpa_drv_disable_11b_rates(wpa_s, 1) < 0) {
                wpa_printf(MSG_DEBUG, "P2P: Failed to disable 11b rates");
                /* Continue anyway; this is not really a fatal error */
        }

        if (global->p2p)
                return 0;

        if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
                struct p2p_params params;

                wpa_printf(MSG_DEBUG, "P2P: Use driver-based P2P management");
                os_memset(&params, 0, sizeof(params));
                params.dev_name = wpa_s->conf->device_name;
                if (wpa_s->conf->device_type &&
                    wps_dev_type_str2bin(wpa_s->conf->device_type,
                                         params.pri_dev_type) < 0) {
                        wpa_printf(MSG_ERROR, "P2P: Invalid device_type");
                        return -1;
                }
                for (i = 0; i < MAX_SEC_DEVICE_TYPES; i++) {
                        if (wpa_s->conf->sec_device_type[i] == NULL)
                                continue;
                        if (wps_dev_type_str2bin(
                                    wpa_s->conf->sec_device_type[i],
                                    params.sec_dev_type[
                                            params.num_sec_dev_types]) < 0) {
                                wpa_printf(MSG_ERROR, "P2P: Invalid "
                                           "sec_device_type");
                                return -1;
                        }
                        params.num_sec_dev_types++;
                        if (params.num_sec_dev_types == DRV_MAX_SEC_DEV_TYPES)
                                break;
                }
                if (wpa_drv_p2p_set_params(wpa_s, &params) < 0)
                        return -1;

                return 0;
        }

        os_memset(&p2p, 0, sizeof(p2p));
        p2p.msg_ctx = wpa_s;
        p2p.cb_ctx = wpa_s;
        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.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.invitation_process = wpas_invitation_process;
        p2p.invitation_received = wpas_invitation_received;
        p2p.invitation_result = wpas_invitation_result;
        p2p.get_noa = wpas_get_noa;

        os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
        os_memcpy(p2p.dev_addr, wpa_s->own_addr, ETH_ALEN);
        p2p.dev_name = wpa_s->conf->device_name;

        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;
        } else {
                p2p.reg_class = 81;
                /*
                 * Pick one of the social channels randomly as the listen
                 * channel.
                 */
                os_get_random((u8 *) &r, sizeof(r));
                p2p.channel = 1 + (r % 3) * 5;
        }
        wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d", 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 {
                p2p.op_reg_class = 81;
                /*
                 * Use random operation channel from (1, 6, 11) if no other
                 * preference is indicated.
                 */
                os_get_random((u8 *) &r, sizeof(r));
                p2p.op_channel = 1 + (r % 3) * 5;
                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->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);

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

        if (wpa_s->conf->device_type &&
            wps_dev_type_str2bin(wpa_s->conf->device_type, p2p.pri_dev_type) <
            0) {
                wpa_printf(MSG_ERROR, "P2P: Invalid device_type");
                return -1;
        }

        for (i = 0; i < MAX_SEC_DEVICE_TYPES; i++) {
                if (wpa_s->conf->sec_device_type[i] == NULL)
                        continue;
                if (wps_dev_type_str2bin(
                            wpa_s->conf->sec_device_type[i],
                            p2p.sec_dev_type[p2p.num_sec_dev_types]) < 0) {
                        wpa_printf(MSG_ERROR, "P2P: Invalid sec_device_type");
                        return -1;
                }
                p2p.num_sec_dev_types++;
                if (p2p.num_sec_dev_types == P2P_SEC_DEVICE_TYPES)
                        break;
        }

        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;

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

        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);
        os_free(wpa_s->go_params);
        wpa_s->go_params = NULL;
        wpabuf_free(wpa_s->pending_action_tx);
        wpa_s->pending_action_tx = NULL;
        eloop_cancel_timeout(wpas_send_action_cb, 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);

        /* 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.
 */
void wpas_p2p_deinit_global(struct wpa_global *global)
{
        struct wpa_supplicant *wpa_s, *tmp;
        char *ifname;

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

        /* Remove remaining P2P group interfaces */
        wpa_s = global->ifaces;
        if (wpa_s)
                wpas_p2p_service_flush(wpa_s);
        while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
                wpa_s = wpa_s->next;
        while (wpa_s) {
                enum wpa_driver_if_type type;
                tmp = global->ifaces;
                while (tmp &&
                       (tmp == wpa_s ||
                        tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
                        tmp = tmp->next;
                }
                if (tmp == NULL)
                        break;
                ifname = os_strdup(tmp->ifname);
                type = wpas_p2p_if_type(tmp->p2p_group_interface);
                wpa_supplicant_remove_iface(global, tmp);
                if (ifname)
                        wpa_drv_if_remove(wpa_s, type, ifname);
                os_free(ifname);
        }

        /*
         * 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;
}


static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
{
        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)
{
        if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
                return wpa_drv_p2p_connect(wpa_s, peer_addr, wps_method,
                                           go_intent, own_interface_addr,
                                           force_freq, persistent_group);
        }

        return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
                           go_intent, own_interface_addr, force_freq,
                           persistent_group);
}


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)
{
        if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
                return -1;

        return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
                             go_intent, own_interface_addr, force_freq,
                             persistent_group);
}


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);
                wpa_msg(wpa_s->parent, MSG_INFO,
                        P2P_EVENT_GROUP_FORMATION_FAILURE);
        }
}


static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
                                   struct wpa_scan_results *scan_res)
{
        struct wpa_bss *bss;
        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 join",
                   scan_res ? (int) scan_res->num : -1);

        if (scan_res)
                wpas_p2p_scan_res_handler(wpa_s, scan_res);

        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_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);
        }
        bss = wpa_bss_get_bssid(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", freq);
        }
        if (freq > 0) {
                u16 method;

                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_LABEL:
                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_prov_disc_req(wpa_s->global->p2p,
                                      wpa_s->pending_join_dev_addr, method, 1)
                    < 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;
                }

                /*
                 * Actual join operation will be started from the Action frame
                 * TX status callback.
                 */
                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);
}


static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
{
        struct wpa_supplicant *wpa_s = eloop_ctx;
        int ret;
        struct wpa_driver_scan_params params;
        struct wpabuf *wps_ie, *ies;

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

        /* P2P Wildcard SSID */
        params.num_ssids = 1;
        params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
        params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;

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

        ies = wpabuf_alloc(wpabuf_len(wps_ie) + 100);
        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);

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

        /*
         * Run a scan to update BSS table and start Provision Discovery once
         * the new scan results become available.
         */
        wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
        if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
                ret = ieee80211_sta_req_scan(wpa_s, &params);
        else
                ret = wpa_drv_scan(wpa_s, &params);

        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 int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
                         const u8 *dev_addr, enum p2p_wps_method wps_method)
{
        wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
                   MACSTR " dev " MACSTR ")",
                   MAC2STR(iface_addr), MAC2STR(dev_addr));

        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(wpa_s, NULL);
        return 0;
}


static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s)
{
        struct wpa_supplicant *group;
        struct p2p_go_neg_results res;

        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;
        }

        group->p2p_in_provisioning = 1;

        os_memset(&res, 0, sizeof(res));
        os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
                  ETH_ALEN);
        res.wps_method = wpa_s->pending_join_wps_method;
        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;
}


/**
 * 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
 * @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
 * 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 join, int auth, int go_intent,
                     int freq)
{
        int force_freq = 0, oper_freq = 0;
        u8 bssid[ETH_ALEN];
        int ret = 0;
        enum wpa_driver_if_type iftype;

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

        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;

        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) {
                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 (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method) <
                    0)
                        return -1;
                return ret;
        }

        if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
            wpa_s->assoc_freq)
                oper_freq = wpa_s->assoc_freq;
        else {
                oper_freq = wpa_drv_shared_freq(wpa_s);
                if (oper_freq < 0)
                        oper_freq = 0;
        }

        if (freq > 0) {
                if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
                        wpa_printf(MSG_DEBUG, "P2P: The forced channel "
                                   "(%u MHz) is not supported for P2P uses",
                                   freq);
                        return -3;
                }

                if (oper_freq > 0 && freq != oper_freq &&
                    !(wpa_s->drv_flags &
                      WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
                        wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
                                   "on %u MHz while connected on another "
                                   "channel (%u MHz)", freq, oper_freq);
                        return -2;
                }
                wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
                           "requested channel (%u MHz)", freq);
                force_freq = freq;
        } else if (oper_freq > 0 &&
                   !p2p_supported_freq(wpa_s->global->p2p, oper_freq)) {
                if (!(wpa_s->drv_flags &
                      WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
                        wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
                                   "while connected on non-P2P supported "
                                   "channel (%u MHz)", oper_freq);
                        return -2;
                }
                wpa_printf(MSG_DEBUG, "P2P: Current operating channel "
                           "(%u MHz) not available for P2P - try to use "
                           "another channel", oper_freq);
                force_freq = 0;
        } else if (oper_freq > 0) {
                wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
                           "channel we are already using (%u MHz) on another "
                           "interface", oper_freq);
                force_freq = oper_freq;
        }

        wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);

        if (!wpa_s->create_p2p_iface) {
                if (auth) {
                        if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
                                                 go_intent, wpa_s->own_addr,
                                                 force_freq, persistent_group)
                            < 0)
                                return -1;
                        return ret;
                }
                if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
                                          go_intent, wpa_s->own_addr,
                                          force_freq, persistent_group) < 0)
                        return -1;
                return ret;
        }

        /* Prepare to add a new interface for the group */
        iftype = WPA_IF_P2P_GROUP;
        if (join)
                iftype = WPA_IF_P2P_CLIENT;
        else 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 (auth) {
                if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
                                         go_intent,
                                         wpa_s->pending_interface_addr,
                                         force_freq, persistent_group) < 0)
                        return -1;
                return ret;
        }
        if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method, go_intent,
                                  wpa_s->pending_interface_addr,
                                  force_freq, persistent_group) < 0) {
                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;
        wpa_s->roc_waiting_drv_freq = 0;
        wpa_s->off_channel_freq = freq;
        wpas_send_action_cb(wpa_s, NULL);
        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;
        }
}


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;

        if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
                return wpa_drv_p2p_listen(wpa_s, timeout);

        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, wpa_s->pending_action_tx);
        wpa_s->off_channel_freq = 0;
        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 (wpa_s->pending_action_tx)
                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);
        }
}


/**
 * 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;

        if (os_strcmp(ifname, "*") == 0) {
                struct wpa_supplicant *prev;
                wpa_s = global->ifaces;
                while (wpa_s) {
                        prev = wpa_s;
                        wpa_s = wpa_s->next;
                        wpas_p2p_disconnect(prev);
                }
                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(wpa_s);
}


static void wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
                                    struct p2p_go_neg_results *params,
                                    int freq)
{
        u8 bssid[ETH_ALEN];
        int res;

        os_memset(params, 0, sizeof(*params));
        params->role_go = 1;
        if (freq) {
                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) {
                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 == 118) {
                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(wpa_s->global->p2p,
                                      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(wpa_s->global->p2p,
                                      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(wpa_s->global->p2p,
                                      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 {
                params->freq = 2412;
                wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference "
                           "known)", params->freq);
        }

        if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
            wpa_s->assoc_freq && !freq) {
                wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are "
                           "already using");
                params->freq = wpa_s->assoc_freq;
        }

        res = wpa_drv_shared_freq(wpa_s);
        if (res > 0 && !freq) {
                wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are "
                           "already using on a shared interface");
                params->freq = res;
        }
}


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))
                return wpa_s;

        if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
                                         WPA_IF_P2P_CLIENT) < 0)
                return NULL;
        group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
        if (group_wpa_s == NULL) {
                wpas_p2p_remove_pending_group_interface(wpa_s);
                return NULL;
        }

        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
 * 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)
{
        struct p2p_go_neg_results params;
        unsigned int r;

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

        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(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 {
                        os_get_random((u8 *) &r, sizeof(r));
                        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(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 {
                        os_get_random((u8 *) &r, sizeof(r));
                        freq = 5180 + (r % 4) * 20;
                        if (!p2p_supported_freq(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(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;
        }

        wpas_p2p_init_go_params(wpa_s, &params, freq);
        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)
{
        struct wpa_ssid *ssid;

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

        wpa_supplicant_ap_deinit(wpa_s);

        ssid = wpa_config_add_network(wpa_s->conf);
        if (ssid == NULL)
                return -1;
        wpas_notify_network_added(wpa_s, ssid);
        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) {
                wpas_notify_network_removed(wpa_s, ssid);
                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_supplicant_select_network(wpa_s, ssid);

        wpa_s->show_group_started = 1;

        return 0;
}


int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
                                  struct wpa_ssid *ssid, int addr_allocated,
                                  int freq)
{
        struct p2p_go_neg_results params;
        int go = 0;

        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;
        }

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

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

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

        wpas_p2p_init_go_params(wpa_s, &params, freq);

        params.role_go = 1;
        if (ssid->passphrase == NULL ||
            os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
                wpa_printf(MSG_DEBUG, "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;

        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 (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)
                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,
                                       int persistent_group,
                                       int group_formation)
{
        struct p2p_group *group;
        struct p2p_group_config *cfg;

        if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
                return NULL;
        if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
                return NULL;

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

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

        eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
                             NULL);
        if (wpa_s->global->p2p)
                p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
        else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
                wpa_drv_wps_success_cb(wpa_s, peer_addr);
        wpas_group_formation_completed(wpa_s, 1);
}


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

        if (os_strcmp(config_method, "display") == 0)
                config_methods = WPS_CONFIG_DISPLAY;
        else if (os_strcmp(config_method, "keypad") == 0)
                config_methods = WPS_CONFIG_KEYPAD;
        else if (os_strcmp(config_method, "pbc") == 0 ||
                 os_strcmp(config_method, "pushbutton") == 0)
                config_methods = WPS_CONFIG_PUSHBUTTON;
        else
                return -1;

        if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
                return wpa_drv_p2p_prov_disc_req(wpa_s, peer_addr,
                                                 config_methods);
        }

        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, 0);
}


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 (!wpa_s->pending_action_tx)
                return;

        wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
                   "operation request");
        wpabuf_free(wpa_s->pending_action_tx);
        wpa_s->pending_action_tx = NULL;
}


int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
                  enum p2p_discovery_type type)
{
        wpas_p2p_clear_pending_action_tx(wpa_s);
        wpa_s->p2p_long_listen = 0;

        if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
                return wpa_drv_p2p_find(wpa_s, timeout, type);

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

        return p2p_find(wpa_s->global->p2p, timeout, type);
}


void wpas_p2p_stop_find(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->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
                wpa_drv_p2p_stop_find(wpa_s);
                return;
        }

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

        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;

        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;

        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->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 *ie, size_t ie_len)
{
        if (wpa_s->global->p2p_disabled)
                return 0;
        if (wpa_s->global->p2p == NULL)
                return 0;

        return p2p_probe_req_rx(wpa_s->global->p2p, addr, ie, ie_len);
}


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);
}


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


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

        if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
                return wpa_drv_p2p_reject(wpa_s, addr);

        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)
{
        enum p2p_invite_role role;
        u8 *bssid = NULL;

        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;

        if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
                return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid,
                                          ssid->ssid, ssid->ssid_len,
                                          go_dev_addr, 1);

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

        return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
                          ssid->ssid, ssid->ssid_len, 0, go_dev_addr, 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;

        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;
        }

        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->parent->own_addr;
        } 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;
        }
        wpa_s->parent->pending_invite_ssid_id = -1;

        if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
                return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid,
                                          ssid->ssid, ssid->ssid_len,
                                          go_dev_addr, 0);

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

        return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
                          ssid->ssid, ssid->ssid_len, wpa_s->assoc_freq,
                          go_dev_addr, 0);
}


void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
{
        struct wpa_ssid *ssid = wpa_s->current_ssid;
        const char *ssid_txt;
        u8 go_dev_addr[ETH_ALEN];
        int persistent;

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

        wpa_s->show_group_started = 0;

        ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
        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;

        if (ssid->passphrase == NULL && ssid->psk_set) {
                char psk[65];
                wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
                wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
                        "%s client ssid=\"%s\" freq=%d psk=%s go_dev_addr="
                        MACSTR "%s",
                        wpa_s->ifname, ssid_txt, ssid->frequency, psk,
                        MAC2STR(go_dev_addr),
                        persistent ? " [PERSISTENT]" : "");
        } else {
                wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
                        "%s client ssid=\"%s\" freq=%d passphrase=\"%s\" "
                        "go_dev_addr=" MACSTR "%s",
                        wpa_s->ifname, ssid_txt, ssid->frequency,
                        ssid->passphrase ? ssid->passphrase : "",
                        MAC2STR(go_dev_addr),
                        persistent ? " [PERSISTENT]" : "");
        }

        if (persistent)
                wpas_p2p_store_persistent_group(wpa_s->parent, ssid,
                                                go_dev_addr);
}


int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
                          u32 interval1, u32 duration2, u32 interval2)
{
        if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
                return -1;
        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;

        return p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
                                wpa_s->own_addr, wpa_s->assoc_freq,
                                duration1, interval1, duration2, interval2);
}


int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
                        unsigned int interval)
{
        if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
                return -1;

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

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


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) {
                wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
                           "disabled");
                return;
        }

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


static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
{
        eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
        if (wpa_s->conf->p2p_group_idle == 0)
                return;

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

        wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
                   wpa_s->conf->p2p_group_idle);
        eloop_register_timeout(wpa_s->conf->p2p_group_idle, 0,
                               wpas_p2p_group_idle_timeout, wpa_s, NULL);
}


void wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
                           u16 reason_code, const u8 *ie, size_t ie_len)
{
        if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
                return;
        if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
                return;

        p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie, ie_len);
}


void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
                             u16 reason_code, const u8 *ie, size_t ie_len)
{
        if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
                return;
        if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
                return;

        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) {
                u8 pri_dev_type[8];
                if (wpa_s->conf->device_type) {
                        if (wps_dev_type_str2bin(wpa_s->conf->device_type,
                                                 pri_dev_type) < 0) {
                                wpa_printf(MSG_ERROR, "P2P: Invalid "
                                           "device_type");
                        } else
                                p2p_set_pri_dev_type(p2p, pri_dev_type);
                }
        }

        if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) {
                u8 sec_dev_type[P2P_SEC_DEVICE_TYPES][8];
                size_t num = 0;
                int i;
                for (i = 0; i < MAX_SEC_DEVICE_TYPES; i++) {
                        if (wpa_s->conf->sec_device_type[i] == NULL)
                                continue;
                        if (wps_dev_type_str2bin(
                                    wpa_s->conf->sec_device_type[i],
                                    sec_dev_type[num]) < 0) {
                                wpa_printf(MSG_ERROR, "P2P: Invalid "
                                           "sec_device_type");
                                continue;
                        }
                        num++;
                        if (num == P2P_SEC_DEVICE_TYPES)
                                break;
                }
                p2p_set_sec_dev_types(p2p, (void *) sec_dev_type, num);
        }

        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);
}


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;
        if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
                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(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(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(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);
}


void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
{
        wpas_p2p_disable_cross_connect(wpa_s);
        if (!wpa_s->ap_iface)
                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(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);

        if (wpa_s->global->p2p)
                p2p_group_formation_failed(wpa_s->global->p2p);

        eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
                             wpa_s->parent, NULL);

        wpas_group_formation_completed(wpa_s, 0);
        return 1;
}


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

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

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

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


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);
        }

        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);
                        wpas_p2p_group_delete(wpa_s);
                        break;
                }
        }

        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");
        wpa_s->removal_reason = P2P_GROUP_REMOVAL_UNAVAILABLE;
        wpas_p2p_group_delete(wpa_s);
}


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 || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT))
                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 || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT))
                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;

        wpa_s->removal_reason = P2P_GROUP_REMOVAL_REQUESTED;
        wpas_p2p_group_delete(wpa_s);

        return 0;
}