/*
 * Scan interfaces for XRadio drivers
 *
 * Copyright (c) 2013
 * Xradio Technology Co., Ltd. <www.xradiotech.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */


#ifndef SCAN_H_INCLUDED
#define SCAN_H_INCLUDED

#include <linux/semaphore.h>
#include "wsm.h"

/* external */ struct sk_buff;
/* external */ struct cfg80211_scan_request;
/* external */ struct ieee80211_channel;
/* external */ struct ieee80211_hw;
/* external */ struct work_struct;

#define SCAN_DEFAULT_TIMEOUT (5000)   /* default scan timeout(ms)*/
#define SCAN_MAX_DELAY      (3*HZ)   /*3s delay for connect*/
#define XRADIO_SCAN_ALLOW   0
#define XRADIO_SCAN_DELAY   1

struct xradio_scan {
	struct semaphore lock;
	struct work_struct work;
#ifdef ROAM_OFFLOAD
	struct work_struct swork; /* scheduled scan work */
	struct cfg80211_sched_scan_request *sched_req;
#endif /*ROAM_OFFLOAD*/
	struct delayed_work timeout;
	struct cfg80211_scan_request *req;
	struct ieee80211_channel **begin;
	struct ieee80211_channel **curr;
	struct ieee80211_channel **end;
	struct wsm_ssid ssids[WSM_SCAN_MAX_NUM_OF_SSIDS];
	int output_power;
	int n_ssids;
	struct semaphore status_lock; /*sync scan request and result*/
	int status;
	atomic_t in_progress;
	/* Direct probe requests workaround */
	struct delayed_work probe_work;
	int direct_probe;
	u8 if_id;
#ifdef SCAN_FAILED_WORKAROUND_OF_FW_EXCEPTION
	unsigned long scan_failed_timestamp;
	u8 scan_failed_cnt;
#endif
};

int xradio_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
		   struct cfg80211_scan_request *req);
#ifdef ROAM_OFFLOAD
int xradio_hw_sched_scan_start(struct ieee80211_hw *hw,
			       struct ieee80211_vif *vif,
			       struct cfg80211_sched_scan_request *req,
			       struct ieee80211_sched_scan_ies *ies);
void xradio_hw_sched_scan_stop(struct xradio_common *priv);
void xradio_sched_scan_work(struct work_struct *work);
#endif /*ROAM_OFFLOAD*/
void xradio_scan_work(struct work_struct *work);
void xradio_scan_timeout(struct work_struct *work);
void xradio_scan_complete_cb(struct xradio_common *priv,
			     struct wsm_scan_complete *arg);

/* ******************************************************************** */
/* Raw probe requests TX workaround					*/
void xradio_probe_work(struct work_struct *work);
#ifdef CONFIG_XRADIO_TESTMODE
/* Advance Scan Timer							*/
void xradio_advance_scan_timeout(struct work_struct *work);
#endif

#endif