/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Scan interface for BES2600 mac80211 driver
 *
 * Copyright (c) 2010, ST-Ericsson
 * Author: Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>
 *
 * Copyright (c) 2022, Bestechnic (Beijing) Co., Ltd.
 *
 */

#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;

struct bes2600_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;
	int status;
	atomic_t in_progress;
	/* Direct probe requests workaround */
	struct delayed_work probe_work;
	int direct_probe;
	u8 if_id;
	/*
	 * Track consecutive firmware-side WSM scan rejections so we can
	 * back off briefly instead of re-issuing the same scan on every
	 * mac80211 background-scan tick. Firmware returns WSM status != 0
	 * for a handful of transient conditions (BT A2DP active in non-
	 * FDD coex, firmware-internal busy windows) and keeps rejecting
	 * until the state clears; retrying at full cadence just floods
	 * dmesg.
	 */
	unsigned int reject_count;
	unsigned long backoff_until;
};

int bes2600_hw_scan(struct ieee80211_hw *hw,
		   struct ieee80211_vif *vif,
		   struct ieee80211_scan_request *hw_req);
#ifdef ROAM_OFFLOAD
int bes2600_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 bes2600_hw_sched_scan_stop(struct bes2600_common *priv);
void bes2600_sched_scan_work(struct work_struct *work);
#endif /*ROAM_OFFLOAD*/
void bes2600_scan_work(struct work_struct *work);
void bes2600_scan_timeout(struct work_struct *work);
void bes2600_scan_complete_cb(struct bes2600_common *priv,
				struct wsm_scan_complete *arg);
void bes2600_cancel_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif);

/* ******************************************************************** */
/* Raw probe requests TX workaround					*/
void bes2600_probe_work(struct work_struct *work);
#ifdef CONFIG_BES2600_TESTMODE
/* Advance Scan Timer							*/
void bes2600_advance_scan_timeout(struct work_struct *work);
#endif

#endif