P2P: Use 500 ms search delay by default during concurrent operations

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

/*
 * wpa_supplicant - P2P
 * Copyright (c) 2009-2010, Atheros Communications
 *
 * This software may be distributed under the terms of the BSD license.
 * See README for more details.
 */

#include "includes.h"

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


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

#define P2P_AUTO_PD_SCAN_ATTEMPTS 5

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

#ifndef P2P_MAX_INITIAL_CONN_WAIT
/*
 * How many seconds to wait for initial 4-way handshake to get completed after
 * WPS provisioning step.
 */
#define P2P_MAX_INITIAL_CONN_WAIT 10
#endif /* P2P_MAX_INITIAL_CONN_WAIT */

#ifndef P2P_CONCURRENT_SEARCH_DELAY
#define P2P_CONCURRENT_SEARCH_DELAY 500
#endif /* P2P_CONCURRENT_SEARCH_DELAY */

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


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_req(struct wpa_supplicant *wpa_s, int freq);
static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
                         const u8 *dev_addr, enum p2p_wps_method wps_method,
                         int auto_join);
static void wpas_p2p_pd_before_join_timeout(void *eloop_ctx,
                                            void *timeout_ctx);
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_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
                                        int group_added);


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,
                         unsigned int num_req_dev_types,
                         const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
{
        struct wpa_supplicant *wpa_s = ctx;
        struct wpa_driver_scan_params params;
        int ret;
        struct wpabuf *wps_ie, *ies;
        int social_channels[] = { 2412, 2437, 2462, 0, 0 };
        size_t ielen;

        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(pw_id, &wpa_s->wps->dev,
                                        wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
                                        num_req_dev_types, req_dev_types);
        if (wps_ie == NULL)
                return -1;

        ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
        ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
        if (ies == NULL) {
                wpabuf_free(wps_ie);
                return -1;
        }
        wpabuf_put_buf(ies, wps_ie);
        wpabuf_free(wps_ie);

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

        params.p2p_probe = 1;
        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_SOCIAL_PLUS_ONE:
                social_channels[3] = freq;
                params.freqs = social_channels;
                break;
        }

        ret = wpa_drv_scan(wpa_s, &params);

        wpabuf_free(ies);

        if (ret) {
                if (wpa_s->scanning ||
                    wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
                        wpa_s->p2p_cb_on_scan_complete = 1;
                        ret = 1;
                }
        } else
                wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;

        return ret;
}


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

        ssid = wpa_s->current_ssid;
        if (ssid == NULL) {
                /*
                 * The current SSID was not known, but there may still be a
                 * pending P2P group interface waiting for provisioning.
                 */
                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 (ssid == NULL) {
                        wpa_printf(MSG_ERROR, "P2P: P2P group interface "
                                   "not found");
                        return -1;
                }
        }
        if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
                gtype = "GO";
        else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
                 (ssid && ssid->mode == WPAS_MODE_INFRA)) {
                wpa_s->reassociate = 0;
                wpa_s->disconnected = 1;
                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 (removal_reason) {
        case P2P_GROUP_REMOVAL_REQUESTED:
                reason = " reason=REQUESTED";
                break;
        case P2P_GROUP_REMOVAL_FORMATION_FAILED:
                reason = " reason=FORMATION_FAILED";
                break;
        case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
                reason = " reason=IDLE";
                break;
        case P2P_GROUP_REMOVAL_UNAVAILABLE:
                reason = " reason=UNAVAILABLE";
                break;
        case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
                reason = " reason=GO_ENDING_SESSION";
                break;
        default:
                reason = "";
                break;
        }
        if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
                wpa_msg(wpa_s->parent, MSG_INFO,
                        P2P_EVENT_GROUP_REMOVED "%s %s%s",
                        wpa_s->ifname, gtype, reason);
        }

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

        if (removal_reason != P2P_GROUP_REMOVAL_SILENT && 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, 0);
                wpa_s = global->ifaces;
                if (wpa_s && ifname)
                        wpa_drv_if_remove(wpa_s, type, ifname);
                os_free(ifname);
                return 0;
        }

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

        return 0;
}


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

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

        bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
        if (bss == NULL) {
                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 int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
                                           struct wpa_ssid *ssid,
                                           const u8 *go_dev_addr)
{
        struct wpa_ssid *s;
        int changed = 0;

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

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

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

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

#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 */

        return s->id;
}


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

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

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

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

        if (s == NULL)
                return;

        for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
                if (os_memcmp(s->p2p_client_list + i * ETH_ALEN, addr,
                              ETH_ALEN) == 0)
                        return; /* already in list */
        }

        n = os_realloc_array(s->p2p_client_list, s->num_p2p_clients + 1,
                             ETH_ALEN);
        if (n == NULL)
                return;
        os_memcpy(n + s->num_p2p_clients * ETH_ALEN, addr, ETH_ALEN);
        s->p2p_client_list = n;
        s->num_p2p_clients++;

#ifndef CONFIG_NO_CONFIG_WRITE
        if (wpa_s->parent->conf->update_config &&
            wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
                wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
#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];
        int network_id = -1;

        /*
         * This callback is likely called for the main interface. Update wpa_s
         * to use the group interface if a new interface was created for the
         * group.
         */
        if (wpa_s->global->p2p_group_formation)
                wpa_s = wpa_s->global->p2p_group_formation;
        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,
                                      P2P_GROUP_REMOVAL_FORMATION_FAILED);
                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->global->p2p_dev_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;
                os_memset(go_dev_addr, 0, ETH_ALEN);
        }

        wpa_s->show_group_started = 0;
        if (client) {
                /*
                 * Indicate event only after successfully completed 4-way
                 * handshake, i.e., when the interface is ready for data
                 * packets.
                 */
                wpa_s->show_group_started = 1;
        } else 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)
                network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
                                                             ssid, go_dev_addr);
        if (network_id < 0 && ssid)
                network_id = ssid->id;
        if (!client)
                wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
}


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

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

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

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

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

                wpa_printf(MSG_DEBUG, "P2P: Starting pending "
                           "join-existing-group operation (no ACK for PD "
                           "Req)");
                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;
        return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
                                      wait_time,
                                      wpas_p2p_send_action_tx_status, 1);
}


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


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


static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
                                    struct p2p_go_neg_results *res)
{
        wpa_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;
        int network_id = -1;

        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->global->p2p_dev_addr),
                        params->persistent_group ? " [PERSISTENT]" : "");

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

        wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
        if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
                                              params->peer_interface_addr)) {
                wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
                           "filtering");
                return;
        }
        if (params->wps_method == WPS_PBC)
                wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
                                          params->peer_device_addr);
        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;

        wpa_s->show_group_started = 0;

        wpa_config_set_network_defaults(ssid);
        ssid->temporary = 1;
        ssid->p2p_group = 1;
        ssid->p2p_persistent_group = params->persistent_group;
        ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
                WPAS_MODE_P2P_GO;
        ssid->frequency = params->freq;
        ssid->ht40 = params->ht40;
        ssid->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);
        ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;

        wpa_s->ap_configured_cb = p2p_go_configured;
        wpa_s->ap_configured_cb_ctx = wpa_s;
        wpa_s->ap_configured_cb_data = wpa_s->go_params;
        wpa_s->connect_without_scan = ssid;
        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(config_methods);
#undef C

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

        d->p2p_group_idle = s->p2p_group_idle;
        d->p2p_intra_bss = s->p2p_intra_bss;
        d->persistent_reconnect = s->persistent_reconnect;
        d->max_num_sta = s->max_num_sta;
        d->pbc_in_m1 = s->pbc_in_m1;
}


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);
                wpas_p2p_remove_pending_group_interface(wpa_s);
                return;
        }

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

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

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

        if (wpa_s->create_p2p_iface) {
                struct wpa_supplicant *group_wpa_s =
                        wpas_p2p_init_group_interface(wpa_s, res->role_go);
                if (group_wpa_s == NULL) {
                        wpas_p2p_remove_pending_group_interface(wpa_s);
                        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)
{
#ifndef CONFIG_NO_STDOUT_DEBUG
        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);
#endif /* CONFIG_NO_STDOUT_DEBUG */

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


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

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

        wpas_notify_p2p_device_lost(wpa_s, dev_addr);
}


static 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), 1);
}


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);
        }
        os_free(str);

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

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


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

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

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

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

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

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

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


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

                switch (srv_proto) {
                case P2P_SERV_ALL_SERVICES:
                        wpa_printf(MSG_DEBUG, "P2P: Service Discovery Request "
                                   "for all services");
                        if (dl_list_empty(&wpa_s->global->p2p_srv_upnp) &&
                            dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
                                wpa_printf(MSG_DEBUG, "P2P: No service "
                                           "discovery protocols available");
                                wpas_sd_add_proto_not_avail(
                                        resp, P2P_SERV_ALL_SERVICES,
                                        srv_trans_id);
                                break;
                        }
                        wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
                        wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
                        break;
                case P2P_SERV_BONJOUR:
                        wpas_sd_req_bonjour(wpa_s, resp, srv_trans_id,
                                            pos, tlv_end - pos);
                        break;
                case P2P_SERV_UPNP:
                        wpas_sd_req_upnp(wpa_s, resp, srv_trans_id,
                                         pos, tlv_end - pos);
                        break;
                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);
}


u64 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 wpa_drv_p2p_sd_request(wpa_s, dst, tlvs);
        if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
                return 0;
        return (uintptr_t) p2p_sd_request(wpa_s->global->p2p, dst, tlvs);
}


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

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


int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, u64 req)
{
        if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
                return wpa_drv_p2p_sd_cancel_request(wpa_s, req);
        if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
                return -1;
        return p2p_sd_cancel_request(wpa_s->global->p2p,
                                     (void *) (uintptr_t) req);
}


void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq,
                          const u8 *dst, u8 dialog_token,
                          const struct wpabuf *resp_tlvs)
{
        if (wpa_s->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, const u8 *group_id,
                        size_t group_id_len)
{
        struct wpa_supplicant *wpa_s = ctx;
        char devtype[WPS_DEV_TYPE_BUFSIZE];
        char params[300];
        u8 empty_dev_type[8];
        unsigned int generated_pin = 0;
        struct wpa_supplicant *group = NULL;

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

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

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

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


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

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

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

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

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


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

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

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

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


static 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, 0);
                } else if (bssid) {
                        wpas_p2p_join(wpa_s, bssid, go_dev_addr,
                                      wpa_s->p2p_wps_method, 0);
                }
                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, 0);
}


static int wpas_p2p_disallowed_freq(struct wpa_global *global,
                                    unsigned int freq)
{
        unsigned int i;

        if (global->p2p_disallow_freq == NULL)
                return 0;

        for (i = 0; i < global->num_p2p_disallow_freq; i++) {
                if (freq >= global->p2p_disallow_freq[i].min &&
                    freq <= global->p2p_disallow_freq[i].max)
                        return 1;
        }

        return 0;
}


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


static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
                                     struct p2p_channels *chan)
{
        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 = 0;
        for (i = 0; i < 11; i++) {
                if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
                        wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
        }
        if (chan->reg_class[cla].channels)
                cla++;

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

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

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

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

        chan->reg_classes = cla;
        return 0;
}


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

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

        return NULL;
}


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

        freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
                chan * 5;
        if (wpas_p2p_disallowed_freq(global, freq))
                return 0;

        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 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 }
};


static int wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
                                   struct hostapd_hw_modes *mode,
                                   u8 channel, u8 bw)
{
        int flag;

        if (!has_channel(wpa_s->global, mode, channel, &flag))
                return -1;
        if (bw == BW40MINUS &&
            (!(flag & HOSTAPD_CHAN_HT40MINUS) ||
             !has_channel(wpa_s->global, mode, channel - 4, NULL)))
                return 0;
        if (bw == BW40PLUS &&
            (!(flag & HOSTAPD_CHAN_HT40PLUS) ||
             !has_channel(wpa_s->global, mode, channel + 4, NULL)))
                return 0;
        return 1;
}


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

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

        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(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
                if (mode == NULL)
                        continue;
                for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
                        if (wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw) < 1)
                                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;

        return 0;
}


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

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

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


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

        for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
                struct wpa_ssid *ssid = wpa_s->current_ssid;
                if (ssid == NULL)
                        continue;
                if (ssid->mode != WPAS_MODE_INFRA)
                        continue;
                if (wpa_s->wpa_state != WPA_COMPLETED &&
                    wpa_s->wpa_state != WPA_GROUP_HANDSHAKE)
                        continue;
                if (os_memcmp(wpa_s->go_dev_addr, dev_addr, ETH_ALEN) == 0)
                        return 1;
        }

        return 0;
}


/**
 * 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;

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

                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.prov_disc_fail = wpas_prov_disc_fail;
        p2p.invitation_process = wpas_invitation_process;
        p2p.invitation_received = wpas_invitation_received;
        p2p.invitation_result = wpas_invitation_result;
        p2p.get_noa = wpas_get_noa;
        p2p.go_connected = wpas_go_connected;

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

        if (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;
        }

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

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

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

        p2p.max_peers = 100;

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

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

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

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

        return 0;
}


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

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

        os_free(wpa_s->go_params);
        wpa_s->go_params = NULL;
        eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
        eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
        eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, 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;

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

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

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


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


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

        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);
        }

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

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


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

        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, ssid ? ssid->ssid : NULL,
                             ssid ? ssid->ssid_len : 0);
}


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


static void wpas_p2p_pd_before_join_timeout(void *eloop_ctx, void *timeout_ctx)
{
        struct wpa_supplicant *wpa_s = eloop_ctx;
        if (!wpa_s->pending_pd_before_join)
                return;
        /*
         * Provision Discovery Response may have been lost - try to connect
         * anyway since we do not need any information from this PD.
         */
        wpa_printf(MSG_DEBUG, "P2P: PD timeout for join-existing-group - "
                   "try to connect anyway");
        wpas_p2p_join_start(wpa_s);
}


static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
{
        struct wpa_supplicant *iface;
        int shared_freq;
        u8 bssid[ETH_ALEN];

        if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)
                return 0;

        for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
                if (!wpas_p2p_create_iface(wpa_s) && iface == wpa_s)
                        continue;
                if (iface->current_ssid == NULL || iface->assoc_freq == 0)
                        continue;
                if (iface->current_ssid->mode == WPAS_MODE_AP ||
                    iface->current_ssid->mode == WPAS_MODE_P2P_GO)
                        shared_freq = iface->current_ssid->frequency;
                else if (wpa_drv_get_bssid(iface, bssid) == 0)
                        shared_freq = iface->assoc_freq;
                else
                        shared_freq = 0;

                if (shared_freq && freq != shared_freq) {
                        wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - %s "
                                   "connected on %d MHz - new connection on "
                                   "%d MHz", iface->ifname, shared_freq, freq);
                        return 1;
                }
        }

        shared_freq = wpa_drv_shared_freq(wpa_s);
        if (shared_freq > 0 && shared_freq != freq) {
                wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - shared "
                           "virtual interface connected on %d MHz - new "
                           "connection on %d MHz", shared_freq, freq);
                return 1;
        }

        return 0;
}


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

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

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

        return updated;
}


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

        eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);

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

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

        if (scan_res)
                wpas_p2p_scan_res_handler(wpa_s, scan_res);

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

                if (join < 0)
                        join = 0;

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

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

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

        freq = p2p_get_oper_freq(wpa_s->global->p2p,
                                 wpa_s->pending_join_iface_addr);
        if (freq < 0 &&
            p2p_get_interface_addr(wpa_s->global->p2p,
                                   wpa_s->pending_join_dev_addr,
                                   iface_addr) == 0 &&
            os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0)
        {
                wpa_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;

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

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

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

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

                if (p2p_prov_disc_req(wpa_s->global->p2p,
                                      wpa_s->pending_join_dev_addr, method, 1,
                                      freq) < 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 (if no ACK is received) or when the
                 * Provision Discovery Response is received. Use a short
                 * timeout as a backup mechanism should the Provision Discovery
                 * Response be lost for any reason.
                 */
                eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s,
                                     NULL);
                eloop_register_timeout(2, 0, wpas_p2p_pd_before_join_timeout,
                                       wpa_s, NULL);
                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_req(struct wpa_supplicant *wpa_s, int freq)
{
        int ret;
        struct wpa_driver_scan_params params;
        struct wpabuf *wps_ie, *ies;
        size_t ielen;
        int freqs[2] = { 0, 0 };

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

        /* P2P Wildcard SSID */
        params.num_ssids = 1;
        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(DEV_PW_DEFAULT, &wpa_s->wps->dev,
                                        wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
                                        NULL);
        if (wps_ie == NULL) {
                wpas_p2p_scan_res_join(wpa_s, NULL);
                return;
        }

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

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

        params.p2p_probe = 1;
        params.extra_ies = wpabuf_head(ies);
        params.extra_ies_len = wpabuf_len(ies);
        if (freq > 0) {
                freqs[0] = freq;
                params.freqs = freqs;
        }

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

        wpabuf_free(ies);

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


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


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

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

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

        wpa_s->p2p_join_scan_count = 0;
        wpas_p2p_join_scan(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;
        struct wpa_bss *bss;

        eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, NULL);
        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;
        group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;

        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;
        bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr);
        if (bss) {
                res.freq = bss->freq;
                res.ssid_len = bss->ssid_len;
                os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
        }

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

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

        return 0;
}


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

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

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

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

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

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

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

        if (join || auto_join) {
                u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
                if (auth) {
                        wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
                                   "connect a running group from " MACSTR,
                                   MAC2STR(peer_addr));
                        os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
                        return ret;
                }
                os_memcpy(dev_addr, peer_addr, ETH_ALEN);
                if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
                                           iface_addr) < 0) {
                        os_memcpy(iface_addr, peer_addr, ETH_ALEN);
                        p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
                                         dev_addr);
                }
                if (auto_join) {
                        os_get_time(&wpa_s->p2p_auto_started);
                        wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
                                   "%ld.%06ld",
                                   wpa_s->p2p_auto_started.sec,
                                   wpa_s->p2p_auto_started.usec);
                }
                if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
                                  auto_join) < 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) {
                /* Prepare to add a new interface for the group */
                iftype = WPA_IF_P2P_GROUP;
                if (go_intent == 15)
                        iftype = WPA_IF_P2P_GO;
                if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
                        wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
                                   "interface for the group");
                        return -1;
                }

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

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

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


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


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);
        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 int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
                                   struct p2p_go_neg_results *params,
                                   int freq, int ht40)
{
        u8 bssid[ETH_ALEN];
        int res;

        os_memset(params, 0, sizeof(*params));
        params->role_go = 1;
        params->ht40 = ht40;
        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 == 124) {
                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 {
                int chan;
                for (chan = 0; chan < 11; chan++) {
                        params->freq = 2412 + chan * 5;
                        if (!wpas_p2p_disallowed_freq(wpa_s->global,
                                                      params->freq))
                                break;
                }
                if (chan == 11) {
                        wpa_printf(MSG_DEBUG, "P2P: No 2.4 GHz channel "
                                   "allowed");
                        return -1;
                }
                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;
        } else if (res > 0 && freq != res &&
                   !(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, res);
                return -1;
        }

        return 0;
}


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

        if (!wpas_p2p_create_iface(wpa_s))
                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, int ht40)
{
        struct p2p_go_neg_results params;
        unsigned int r;

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

        /* Make sure we are not running find during connection establishment */
        wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
        wpas_p2p_stop_find(wpa_s);

        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;
        }

        if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40))
                return -1;
        if (params.freq &&
            !p2p_supported_freq(wpa_s->global->p2p, params.freq)) {
                wpa_printf(MSG_DEBUG, "P2P: The selected channel for GO "
                           "(%u MHz) is not supported for P2P uses",
                           params.freq);
                return -1;
        }
        p2p_go_params(wpa_s->global->p2p, &params);
        params.persistent_group = persistent_group;

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

        return 0;
}


static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
                                 struct wpa_ssid *params, int addr_allocated)
{
        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;
        wpa_config_set_network_defaults(ssid);
        ssid->temporary = 1;
        ssid->proto = WPA_PROTO_RSN;
        ssid->pairwise_cipher = WPA_CIPHER_CCMP;
        ssid->group_cipher = WPA_CIPHER_CCMP;
        ssid->key_mgmt = WPA_KEY_MGMT_PSK;
        ssid->ssid = os_malloc(params->ssid_len);
        if (ssid->ssid == NULL) {
                wpa_config_remove_network(wpa_s->conf, ssid->id);
                return -1;
        }
        os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
        ssid->ssid_len = params->ssid_len;
        ssid->p2p_group = 1;
        ssid->export_keys = 1;
        if (params->psk_set) {
                os_memcpy(ssid->psk, params->psk, 32);
                ssid->psk_set = 1;
        }
        if (params->passphrase)
                ssid->passphrase = os_strdup(params->passphrase);

        wpa_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, int ht40)
{
        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);

        wpa_s->p2p_fallback_to_go_neg = 0;

        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;

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

        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 (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
                        wpabuf_free(beacon_ies);
                        wpabuf_free(proberesp_ies);
                        return;
                }
                if (beacon_ies) {
                        wpabuf_free(hapd->p2p_beacon_ie);
                        hapd->p2p_beacon_ie = beacon_ies;
                }
                wpabuf_free(hapd->p2p_probe_resp_ie);
                hapd->p2p_probe_resp_ie = proberesp_ies;
        } else {
                wpabuf_free(beacon_ies);
                wpabuf_free(proberesp_ies);
        }
        wpa_supplicant_ap_update_beacon(wpa_s);
}


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


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

        if (wpa_s->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;

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

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


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

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

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

        eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
                             NULL);
        if (ssid && ssid->mode == WPAS_MODE_INFRA) {
                /*
                 * Use a separate timeout for initial data connection to
                 * complete to allow the group to be removed automatically if
                 * something goes wrong in this step before the P2P group idle
                 * timeout mechanism is taken into use.
                 */
                eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
                                       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);
}


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

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

        wpas_notify_p2p_wps_failed(wpa_s, fail);
}


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

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

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

        if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
                return wpa_drv_p2p_prov_disc_req(wpa_s, peer_addr,
                                                 config_methods,
                                                 use == WPAS_P2P_PD_FOR_JOIN);
        }

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

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


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,
                  unsigned int num_req_dev_types, const u8 *req_dev_types,
                  const u8 *dev_id, unsigned int search_delay)
{
        wpas_p2p_clear_pending_action_tx(wpa_s);
        wpa_s->p2p_long_listen = 0;

        if (wpa_s->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 ||
            wpa_s->p2p_in_provisioning)
                return -1;

        wpa_supplicant_cancel_sched_scan(wpa_s);

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


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);
        wpa_s->p2p_cb_on_scan_complete = 0;

        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;

        wpa_supplicant_cancel_sched_scan(wpa_s);
        wpas_p2p_clear_pending_action_tx(wpa_s);

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

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

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

        return res;
}


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

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

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

        return ret;
}


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

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


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

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


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

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


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

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


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

        if (wpa_s->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;
        int persistent;

        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;
        }

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

        if (ssid->mode == WPAS_MODE_P2P_GO) {
                role = P2P_INVITE_ROLE_ACTIVE_GO;
                bssid = wpa_s->own_addr;
                if (go_dev_addr == NULL)
                        go_dev_addr = wpa_s->global->p2p_dev_addr;
        } 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, persistent);

        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, persistent);
}


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 network_id = -1;
        int persistent;
        int freq;

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

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

        wpa_s->show_group_started = 0;

        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;

        freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
                (int) wpa_s->assoc_freq;
        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, freq, 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, freq,
                        ssid->passphrase ? ssid->passphrase : "",
                        MAC2STR(go_dev_addr),
                        persistent ? " [PERSISTENT]" : "");
        }

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


int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
                          u32 interval1, u32 duration2, u32 interval2)
{
        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 int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
{
        return wpa_s->current_ssid != NULL &&
                wpa_s->current_ssid->p2p_group &&
                wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
}


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

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

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


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

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

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

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

        if (timeout == 0)
                return;

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

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

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

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


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

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

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


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

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


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

        if (p2p == NULL)
                return;

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

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

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

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

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

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

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

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

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

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

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

        if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
                u8 reg_class, channel;
                int ret;
                unsigned int r;
                if (wpa_s->conf->p2p_listen_reg_class &&
                    wpa_s->conf->p2p_listen_channel) {
                        reg_class = wpa_s->conf->p2p_listen_reg_class;
                        channel = wpa_s->conf->p2p_listen_channel;
                } else {
                        reg_class = 81;
                        /*
                         * Pick one of the social channels randomly as the
                         * listen channel.
                         */
                        os_get_random((u8 *) &r, sizeof(r));
                        channel = 1 + (r % 3) * 5;
                }
                ret = p2p_set_listen_channel(p2p, reg_class, channel);
                if (ret)
                        wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
                                   "failed: %d", ret);
        }
        if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
                u8 op_reg_class, op_channel, cfg_op_channel;
                int ret = 0;
                unsigned int r;
                if (wpa_s->conf->p2p_oper_reg_class &&
                    wpa_s->conf->p2p_oper_channel) {
                        op_reg_class = wpa_s->conf->p2p_oper_reg_class;
                        op_channel = wpa_s->conf->p2p_oper_channel;
                        cfg_op_channel = 1;
                } else {
                        op_reg_class = 81;
                        /*
                         * Use random operation channel from (1, 6, 11)
                         *if no other preference is indicated.
                         */
                        os_get_random((u8 *) &r, sizeof(r));
                        op_channel = 1 + (r % 3) * 5;
                        cfg_op_channel = 0;
                }
                ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
                                           cfg_op_channel);
                if (ret)
                        wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
                                   "failed: %d", ret);
        }

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


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) > 0)
                wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
}


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


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

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

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

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

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

                wpa_s->cross_connect_in_use = 1;
                wpa_msg(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);
                found = 1;
        }

        wpas_p2p_stop_find(wpa_s);

        for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
                if (wpa_s == global->p2p_group_formation &&
                    (wpa_s->p2p_in_provisioning ||
                     wpa_s->parent->pending_interface_type ==
                     WPA_IF_P2P_CLIENT)) {
                        wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
                                   "formation found - cancelling",
                                   wpa_s->ifname);
                        found = 1;
                        eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
                                             wpa_s->parent, NULL);
                        wpas_p2p_group_delete(wpa_s,
                                              P2P_GROUP_REMOVAL_REQUESTED);
                        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");
        wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
}


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

        return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED);
}


int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
{
        if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
                return 0;

        return p2p_in_progress(wpa_s->global->p2p);
}


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


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

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

        return NULL;
}


void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
                                       const u8 *addr)
{
        if (addr == NULL)
                return;
        wpas_p2p_add_persistent_group_client(wpa_s, addr);
}


static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
                                        int group_added)
{
        struct wpa_supplicant *group = wpa_s;
        eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, NULL);
        if (wpa_s->global->p2p_group_formation)
                group = wpa_s->global->p2p_group_formation;
        wpa_s = wpa_s->parent;
        offchannel_send_action_done(wpa_s);
        if (group_added)
                wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
        wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
        wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
                         wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
                         0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
                         wpa_s->p2p_persistent_id,
                         wpa_s->p2p_pd_before_go_neg,
                         wpa_s->p2p_go_ht40);
}


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

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

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

        return 1;
}


unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
{
        const char *rn, *rn2;
        struct wpa_supplicant *ifs;

        if (wpa_s->wpa_state > WPA_SCANNING) {
                wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
                        "concurrent operation",
                        P2P_CONCURRENT_SEARCH_DELAY);
                return P2P_CONCURRENT_SEARCH_DELAY;
        }

        if (!wpa_s->driver->get_radio_name)
                return 0;
        rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
        if (rn == NULL || rn[0] == '\0')
                return 0;

        for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
                if (ifs == wpa_s || !ifs->driver->get_radio_name)
                        continue;

                rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
                if (!rn2 || os_strcmp(rn, rn2) != 0)
                        continue;
                if (ifs->wpa_state > WPA_SCANNING) {
                        wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
                                "delay due to concurrent operation on "
                                "interface %s",
                                P2P_CONCURRENT_SEARCH_DELAY, ifs->ifname);
                        return P2P_CONCURRENT_SEARCH_DELAY;
                }
        }

        return 0;
}