/*
 * Linux Wireless Extensions event scan
 *
 * Copyright 1999-2016, Broadcom Corporation
 * All rights reserved,
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *    1. Redistributions of source code must retain the above copyright notice,
 *       this list of conditions and the following disclaimer.
 *    2. Redistributions in binary form must reproduce the above copyright notice,
 *       this list of conditions and the following disclaimer in the documentation
 *       and/or other materials provided with the distribution.
 *
 * This software is provided by the copyright holder "as is" and any express or
 * implied warranties, including, but not limited to, the implied warranties of
 * merchantability and fitness for a particular purpose are disclaimed. In no event
 * shall copyright holder be liable for any direct, indirect, incidental, special,
 * exemplary, or consequential damages (including, but not limited to, procurement
 * of substitute goods or services; loss of use, data, or profits; or business
 * interruption) however caused and on any theory of liability, whether in
 * contract, strict liability, or tort (including negligence or otherwise) arising
 * in any way out of the use of this software, even if advised of the possibility
 * of such damage
 *
 *
 * <<Broadcom-WL-IPTag/Open:>>
 *
 * $Id: wl_escan.h 591286 2015-10-07 11:59:26Z $
 */

#ifndef _wl_escan_
#define _wl_escan_

#include <linux/wireless.h>
#include <wl_iw.h>
#include <dngl_stats.h>
#include <dhd.h>
#include <linux/time.h>


#ifdef DHD_MAX_IFS
#define WL_MAX_IFS DHD_MAX_IFS
#else
#define WL_MAX_IFS 16
#endif

#define ESCAN_BUF_SIZE (64 * 1024)

#define WL_ESCAN_TIMER_INTERVAL_MS	10000 /* Scan timeout */

/* event queue for cfg80211 main event */
struct escan_event_q {
	struct list_head eq_list;
	u32 etype;
	wl_event_msg_t emsg;
	s8 edata[1];
};

/* donlge escan state */
enum escan_state {
	ESCAN_STATE_IDLE,
	ESCAN_STATE_SCANING
};

struct wl_escan_info;

typedef s32(*ESCAN_EVENT_HANDLER) (struct wl_escan_info *escan,
                            const wl_event_msg_t *e, void *data);

typedef struct wl_escan_info {
	struct net_device *dev;
	dhd_pub_t *pub;
	struct timer_list scan_timeout;   /* Timer for catch scan event timeout */
	int    escan_state;
	int ioctl_ver;

	char ioctlbuf[WLC_IOCTL_SMLEN];
	u8 escan_buf[ESCAN_BUF_SIZE];
	struct wl_scan_results *bss_list;
	struct wl_scan_results *scan_results;
	struct ether_addr disconnected_bssid;
	u8 *escan_ioctl_buf;
	spinlock_t eq_lock;	/* for event queue synchronization */
	struct list_head eq_list;	/* used for event queue */
	tsk_ctl_t event_tsk;  		/* task of main event handler thread */
	ESCAN_EVENT_HANDLER evt_handler[WLC_E_LAST];
	struct mutex usr_sync;	/* maily for up/down synchronization */
} wl_escan_info_t;

void wl_escan_event(struct net_device *ndev, const wl_event_msg_t * e, void *data);

int wl_escan_set_scan(
	struct net_device *dev,
	struct iw_request_info *info,
	union iwreq_data *wrqu,
	char *extra
);
int wl_escan_get_scan(struct net_device *dev,	struct iw_request_info *info,
	struct iw_point *dwrq, char *extra);
int wl_escan_attach(struct net_device *dev, void * dhdp);
void wl_escan_detach(void);

#endif /* _wl_escan_ */