/*
 * Linux Wireless Extensions event scan
 *
 * Copyright (C) 1999-2016, Broadcom Corporation
 *
 *      Unless you and Broadcom execute a separate written software license
 * agreement governing use of this software, this software is licensed to you
 * under the terms of the GNU General Public License version 2 (the "GPL"),
 * available at http://www.broadcom.com/licenses/GPLv2.php, with the
 * following added to such license:
 *
 *      As a special exception, the copyright holders of this software give you
 * permission to link this software with independent modules, and to copy and
 * distribute the resulting executable under terms of your choice, provided that
 * you also meet, for each linked independent module, the terms and conditions of
 * the license of that module.  An independent module is a module which is not
 * derived from this software.  The special exception does not apply to any
 * modifications of the software.
 *
 *      Notwithstanding the above, under no circumstances may you combine this
 * software in any way with any other Broadcom software provided under a license
 * other than the GPL, without Broadcom's express prior written consent.
 *
 *
 * <<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_ */