[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / net / wireless / ath / carl9170 / carl9170.h

/*
 * Atheros CARL9170 driver
 *
 * Driver specific definitions
 *
 * Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
 * Copyright 2009, 2010, Christian Lamparter <chunkeey@googlemail.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; see the file COPYING.  If not, see
 * http://www.gnu.org/licenses/.
 *
 * This file incorporates work covered by the following copyright and
 * permission notice:
 *    Copyright (c) 2007-2008 Atheros Communications, Inc.
 *
 *    Permission to use, copy, modify, and/or distribute this software for any
 *    purpose with or without fee is hereby granted, provided that the above
 *    copyright notice and this permission notice appear in all copies.
 *
 *    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 *    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 *    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 *    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 *    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 *    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 *    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
#ifndef __CARL9170_H
#define __CARL9170_H

#include <linux/kernel.h>
#include <linux/firmware.h>
#include <linux/completion.h>
#include <linux/spinlock.h>
#include <net/cfg80211.h>
#include <net/mac80211.h>
#include <linux/usb.h>
#ifdef CONFIG_CARL9170_LEDS
#include <linux/leds.h>
#endif /* CONFIG_CARL9170_LEDS */
#ifdef CONFIG_CARL9170_WPC
#include <linux/input.h>
#endif /* CONFIG_CARL9170_WPC */
#include "eeprom.h"
#include "wlan.h"
#include "hw.h"
#include "fwdesc.h"
#include "fwcmd.h"
#include "../regd.h"

#ifdef CONFIG_CARL9170_DEBUGFS
#include "debug.h"
#endif /* CONFIG_CARL9170_DEBUGFS */

#define CARL9170FW_NAME	"carl9170-1.fw"

#define PAYLOAD_MAX	(CARL9170_MAX_CMD_LEN / 4 - 1)

enum carl9170_rf_init_mode {
	CARL9170_RFI_NONE,
	CARL9170_RFI_WARM,
	CARL9170_RFI_COLD,
};

#define CARL9170_MAX_RX_BUFFER_SIZE		8192

enum carl9170_device_state {
	CARL9170_UNKNOWN_STATE,
	CARL9170_STOPPED,
	CARL9170_IDLE,
	CARL9170_STARTED,
};

#define CARL9170_NUM_TID		16
#define WME_BA_BMP_SIZE			64
#define CARL9170_TX_USER_RATE_TRIES	3

#define WME_AC_BE   2
#define WME_AC_BK   3
#define WME_AC_VI   1
#define WME_AC_VO   0

#define TID_TO_WME_AC(_tid)				\
	((((_tid) == 0) || ((_tid) == 3)) ? WME_AC_BE :	\
	 (((_tid) == 1) || ((_tid) == 2)) ? WME_AC_BK :	\
	 (((_tid) == 4) || ((_tid) == 5)) ? WME_AC_VI :	\
	 WME_AC_VO)

#define SEQ_DIFF(_start, _seq) \
	(((_start) - (_seq)) & 0x0fff)
#define SEQ_PREV(_seq) \
	(((_seq) - 1) & 0x0fff)
#define SEQ_NEXT(_seq) \
	(((_seq) + 1) & 0x0fff)
#define BAW_WITHIN(_start, _bawsz, _seqno) \
	((((_seqno) - (_start)) & 0xfff) < (_bawsz))

enum carl9170_tid_state {
	CARL9170_TID_STATE_INVALID,
	CARL9170_TID_STATE_KILLED,
	CARL9170_TID_STATE_SHUTDOWN,
	CARL9170_TID_STATE_SUSPEND,
	CARL9170_TID_STATE_PROGRESS,
	CARL9170_TID_STATE_IDLE,
	CARL9170_TID_STATE_XMIT,
};

#define CARL9170_BAW_BITS (2 * WME_BA_BMP_SIZE)
#define CARL9170_BAW_SIZE (BITS_TO_LONGS(CARL9170_BAW_BITS))
#define CARL9170_BAW_LEN (DIV_ROUND_UP(CARL9170_BAW_BITS, BITS_PER_BYTE))

struct carl9170_sta_tid {
	/* must be the first entry! */
	struct list_head list;

	/* temporary list for RCU unlink procedure */
	struct list_head tmp_list;

	/* lock for the following data structures */
	spinlock_t lock;

	unsigned int counter;
	enum carl9170_tid_state state;
	u8 tid;		/* TID number ( 0 - 15 ) */
	u16 max;	/* max. AMPDU size */

	u16 snx;	/* awaiting _next_ frame */
	u16 hsn;	/* highest _queued_ sequence */
	u16 bsn;	/* base of the tx/agg bitmap */
	unsigned long bitmap[CARL9170_BAW_SIZE];

	/* Preaggregation reorder queue */
	struct sk_buff_head queue;
};

#define CARL9170_QUEUE_TIMEOUT		256
#define CARL9170_BUMP_QUEUE		1000
#define CARL9170_TX_TIMEOUT		2500
#define CARL9170_JANITOR_DELAY		128
#define CARL9170_QUEUE_STUCK_TIMEOUT	5500

#define CARL9170_NUM_TX_AGG_MAX		30

/*
 * Tradeoff between stability/latency and speed.
 *
 * AR9170_TXQ_DEPTH is devised by dividing the amount of available
 * tx buffers with the size of a full ethernet frame + overhead.
 *
 * Naturally: The higher the limit, the faster the device CAN send.
 * However, even a slight over-commitment at the wrong time and the
 * hardware is doomed to send all already-queued frames at suboptimal
 * rates. This in turn leads to an enormous amount of unsuccessful
 * retries => Latency goes up, whereas the throughput goes down. CRASH!
 */
#define CARL9170_NUM_TX_LIMIT_HARD	((AR9170_TXQ_DEPTH * 3) / 2)
#define CARL9170_NUM_TX_LIMIT_SOFT	(AR9170_TXQ_DEPTH)

struct carl9170_tx_queue_stats {
	unsigned int count;
	unsigned int limit;
	unsigned int len;
};

struct carl9170_vif {
	unsigned int id;
	struct ieee80211_vif *vif;
};

struct carl9170_vif_info {
	struct list_head list;
	bool active;
	unsigned int id;
	struct sk_buff *beacon;
	bool enable_beacon;
};

#define AR9170_NUM_RX_URBS	16
#define AR9170_NUM_RX_URBS_MUL	2
#define AR9170_NUM_TX_URBS	8
#define AR9170_NUM_RX_URBS_POOL (AR9170_NUM_RX_URBS_MUL * AR9170_NUM_RX_URBS)

enum carl9170_device_features {
	CARL9170_WPS_BUTTON		= BIT(0),
	CARL9170_ONE_LED		= BIT(1),
};

#ifdef CONFIG_CARL9170_LEDS
struct ar9170;

struct carl9170_led {
	struct ar9170 *ar;
	struct led_classdev l;
	char name[32];
	unsigned int toggled;
	bool last_state;
	bool registered;
};
#endif /* CONFIG_CARL9170_LEDS */

enum carl9170_restart_reasons {
	CARL9170_RR_NO_REASON = 0,
	CARL9170_RR_FATAL_FIRMWARE_ERROR,
	CARL9170_RR_TOO_MANY_FIRMWARE_ERRORS,
	CARL9170_RR_WATCHDOG,
	CARL9170_RR_STUCK_TX,
	CARL9170_RR_UNRESPONSIVE_DEVICE,
	CARL9170_RR_COMMAND_TIMEOUT,
	CARL9170_RR_TOO_MANY_PHY_ERRORS,
	CARL9170_RR_LOST_RSP,
	CARL9170_RR_INVALID_RSP,
	CARL9170_RR_USER_REQUEST,

	__CARL9170_RR_LAST,
};

enum carl9170_erp_modes {
	CARL9170_ERP_INVALID,
	CARL9170_ERP_AUTO,
	CARL9170_ERP_MAC80211,
	CARL9170_ERP_OFF,
	CARL9170_ERP_CTS,
	CARL9170_ERP_RTS,
	__CARL9170_ERP_NUM,
};

struct ar9170 {
	struct ath_common common;
	struct ieee80211_hw *hw;
	struct mutex mutex;
	enum carl9170_device_state state;
	spinlock_t state_lock;
	enum carl9170_restart_reasons last_reason;
	bool registered;

	/* USB */
	struct usb_device *udev;
	struct usb_interface *intf;
	struct usb_anchor rx_anch;
	struct usb_anchor rx_work;
	struct usb_anchor rx_pool;
	struct usb_anchor tx_wait;
	struct usb_anchor tx_anch;
	struct usb_anchor tx_cmd;
	struct usb_anchor tx_err;
	struct tasklet_struct usb_tasklet;
	atomic_t tx_cmd_urbs;
	atomic_t tx_anch_urbs;
	atomic_t rx_anch_urbs;
	atomic_t rx_work_urbs;
	atomic_t rx_pool_urbs;
	kernel_ulong_t features;

	/* firmware settings */
	struct completion fw_load_wait;
	struct completion fw_boot_wait;
	struct {
		const struct carl9170fw_desc_head *desc;
		const struct firmware *fw;
		unsigned int offset;
		unsigned int address;
		unsigned int cmd_bufs;
		unsigned int api_version;
		unsigned int vif_num;
		unsigned int err_counter;
		unsigned int bug_counter;
		u32 beacon_addr;
		unsigned int beacon_max_len;
		bool rx_stream;
		bool tx_stream;
		bool rx_filter;
		unsigned int mem_blocks;
		unsigned int mem_block_size;
		unsigned int rx_size;
		unsigned int tx_seq_table;
	} fw;

	/* reset / stuck frames/queue detection */
	struct work_struct restart_work;
	struct work_struct ping_work;
	unsigned int restart_counter;
	unsigned long queue_stop_timeout[__AR9170_NUM_TXQ];
	unsigned long max_queue_stop_timeout[__AR9170_NUM_TXQ];
	bool needs_full_reset;
	atomic_t pending_restarts;

	/* interface mode settings */
	struct list_head vif_list;
	unsigned long vif_bitmap;
	unsigned int vifs;
	struct carl9170_vif vif_priv[AR9170_MAX_VIRTUAL_MAC];

	/* beaconing */
	spinlock_t beacon_lock;
	unsigned int global_pretbtt;
	unsigned int global_beacon_int;
	struct carl9170_vif_info *beacon_iter;
	unsigned int beacon_enabled;

	/* cryptographic engine */
	u64 usedkeys;
	bool rx_software_decryption;
	bool disable_offload;

	/* filter settings */
	u64 cur_mc_hash;
	u32 cur_filter;
	unsigned int filter_state;
	unsigned int rx_filter_caps;
	bool sniffer_enabled;

	/* MAC */
	enum carl9170_erp_modes erp_mode;

	/* PHY */
	struct ieee80211_channel *channel;
	int noise[4];
	unsigned int chan_fail;
	unsigned int total_chan_fail;
	u8 heavy_clip;
	u8 ht_settings;

	/* power calibration data */
	u8 power_5G_leg[4];
	u8 power_2G_cck[4];
	u8 power_2G_ofdm[4];
	u8 power_5G_ht20[8];
	u8 power_5G_ht40[8];
	u8 power_2G_ht20[8];
	u8 power_2G_ht40[8];

#ifdef CONFIG_CARL9170_LEDS
	/* LED */
	struct delayed_work led_work;
	struct carl9170_led leds[AR9170_NUM_LEDS];
#endif /* CONFIG_CARL9170_LEDS */

	/* qos queue settings */
	spinlock_t tx_stats_lock;
	struct carl9170_tx_queue_stats tx_stats[__AR9170_NUM_TXQ];
	struct ieee80211_tx_queue_params edcf[5];
	struct completion tx_flush;

	/* CMD */
	int cmd_seq;
	int readlen;
	u8 *readbuf;
	spinlock_t cmd_lock;
	struct completion cmd_wait;
	union {
		__le32 cmd_buf[PAYLOAD_MAX + 1];
		struct carl9170_cmd cmd;
		struct carl9170_rsp rsp;
	};

	/* statistics */
	unsigned int tx_dropped;
	unsigned int tx_ack_failures;
	unsigned int tx_fcs_errors;
	unsigned int rx_dropped;

	/* EEPROM */
	struct ar9170_eeprom eeprom;

	/* tx queuing */
	struct sk_buff_head tx_pending[__AR9170_NUM_TXQ];
	struct sk_buff_head tx_status[__AR9170_NUM_TXQ];
	struct delayed_work tx_janitor;
	unsigned long tx_janitor_last_run;
	bool tx_schedule;

	/* tx ampdu */
	struct work_struct ampdu_work;
	spinlock_t tx_ampdu_list_lock;
	struct carl9170_sta_tid *tx_ampdu_iter;
	struct list_head tx_ampdu_list;
	atomic_t tx_ampdu_upload;
	atomic_t tx_ampdu_scheduler;
	atomic_t tx_total_pending;
	atomic_t tx_total_queued;
	unsigned int tx_ampdu_list_len;
	int current_density;
	int current_factor;
	bool tx_ampdu_schedule;

	/* internal memory management */
	spinlock_t mem_lock;
	unsigned long *mem_bitmap;
	atomic_t mem_free_blocks;
	atomic_t mem_allocs;

	/* rxstream mpdu merge */
	struct ar9170_rx_head rx_plcp;
	bool rx_has_plcp;
	struct sk_buff *rx_failover;
	int rx_failover_missing;

#ifdef CONFIG_CARL9170_WPC
	struct {
		bool pbc_state;
		struct input_dev *pbc;
		char name[32];
		char phys[32];
	} wps;
#endif /* CONFIG_CARL9170_WPC */

#ifdef CONFIG_CARL9170_DEBUGFS
	struct carl9170_debug debug;
	struct dentry *debug_dir;
#endif /* CONFIG_CARL9170_DEBUGFS */

	/* PSM */
	struct work_struct ps_work;
	struct {
		unsigned int dtim_counter;
		unsigned long last_beacon;
		unsigned long last_action;
		unsigned long last_slept;
		unsigned int sleep_ms;
		unsigned int off_override;
		bool state;
	} ps;
};

enum carl9170_ps_off_override_reasons {
	PS_OFF_VIF	= BIT(0),
	PS_OFF_BCN	= BIT(1),
	PS_OFF_5GHZ	= BIT(2),
};

struct carl9170_ba_stats {
	u8 ampdu_len;
	u8 ampdu_ack_len;
	bool clear;
};

struct carl9170_sta_info {
	bool ht_sta;
	unsigned int ampdu_max_len;
	struct carl9170_sta_tid *agg[CARL9170_NUM_TID];
	struct carl9170_ba_stats stats[CARL9170_NUM_TID];
};

struct carl9170_tx_info {
	unsigned long timeout;
	struct ar9170 *ar;
	struct kref ref;
};

#define CHK_DEV_STATE(a, s)	(((struct ar9170 *)a)->state >= (s))
#define IS_INITIALIZED(a)	(CHK_DEV_STATE(a, CARL9170_STOPPED))
#define IS_ACCEPTING_CMD(a)	(CHK_DEV_STATE(a, CARL9170_IDLE))
#define IS_STARTED(a)		(CHK_DEV_STATE(a, CARL9170_STARTED))

static inline void __carl9170_set_state(struct ar9170 *ar,
	enum carl9170_device_state newstate)
{
	ar->state = newstate;
}

static inline void carl9170_set_state(struct ar9170 *ar,
	enum carl9170_device_state newstate)
{
	unsigned long flags;

	spin_lock_irqsave(&ar->state_lock, flags);
	__carl9170_set_state(ar, newstate);
	spin_unlock_irqrestore(&ar->state_lock, flags);
}

static inline void carl9170_set_state_when(struct ar9170 *ar,
	enum carl9170_device_state min, enum carl9170_device_state newstate)
{
	unsigned long flags;

	spin_lock_irqsave(&ar->state_lock, flags);
	if (CHK_DEV_STATE(ar, min))
		__carl9170_set_state(ar, newstate);
	spin_unlock_irqrestore(&ar->state_lock, flags);
}

/* exported interface */
void *carl9170_alloc(size_t priv_size);
int carl9170_register(struct ar9170 *ar);
void carl9170_unregister(struct ar9170 *ar);
void carl9170_free(struct ar9170 *ar);
void carl9170_restart(struct ar9170 *ar, const enum carl9170_restart_reasons r);
void carl9170_ps_check(struct ar9170 *ar);

/* USB back-end */
int carl9170_usb_open(struct ar9170 *ar);
void carl9170_usb_stop(struct ar9170 *ar);
void carl9170_usb_tx(struct ar9170 *ar, struct sk_buff *skb);
void carl9170_usb_handle_tx_err(struct ar9170 *ar);
int carl9170_exec_cmd(struct ar9170 *ar, const enum carl9170_cmd_oids,
		      u32 plen, void *payload, u32 rlen, void *resp);
int __carl9170_exec_cmd(struct ar9170 *ar, struct carl9170_cmd *cmd,
			const bool free_buf);
int carl9170_usb_restart(struct ar9170 *ar);
void carl9170_usb_reset(struct ar9170 *ar);

/* MAC */
int carl9170_init_mac(struct ar9170 *ar);
int carl9170_set_qos(struct ar9170 *ar);
int carl9170_update_multicast(struct ar9170 *ar, const u64 mc_hast);
int carl9170_mod_virtual_mac(struct ar9170 *ar, const unsigned int id,
			     const u8 *mac);
int carl9170_set_operating_mode(struct ar9170 *ar);
int carl9170_set_beacon_timers(struct ar9170 *ar);
int carl9170_set_dyn_sifs_ack(struct ar9170 *ar);
int carl9170_set_rts_cts_rate(struct ar9170 *ar);
int carl9170_set_ampdu_settings(struct ar9170 *ar);
int carl9170_set_slot_time(struct ar9170 *ar);
int carl9170_set_mac_rates(struct ar9170 *ar);
int carl9170_set_hwretry_limit(struct ar9170 *ar, const u32 max_retry);
int carl9170_update_beacon(struct ar9170 *ar, const bool submit);
int carl9170_upload_key(struct ar9170 *ar, const u8 id, const u8 *mac,
	const u8 ktype, const u8 keyidx, const u8 *keydata, const int keylen);
int carl9170_disable_key(struct ar9170 *ar, const u8 id);

/* RX */
void carl9170_rx(struct ar9170 *ar, void *buf, unsigned int len);
void carl9170_handle_command_response(struct ar9170 *ar, void *buf, u32 len);

/* TX */
void carl9170_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb);
void carl9170_tx_janitor(struct work_struct *work);
void carl9170_tx_process_status(struct ar9170 *ar,
				const struct carl9170_rsp *cmd);
void carl9170_tx_status(struct ar9170 *ar, struct sk_buff *skb,
			const bool success);
void carl9170_tx_callback(struct ar9170 *ar, struct sk_buff *skb);
void carl9170_tx_drop(struct ar9170 *ar, struct sk_buff *skb);
void carl9170_tx_scheduler(struct ar9170 *ar);
void carl9170_tx_get_skb(struct sk_buff *skb);
int carl9170_tx_put_skb(struct sk_buff *skb);

/* LEDs */
#ifdef CONFIG_CARL9170_LEDS
int carl9170_led_register(struct ar9170 *ar);
void carl9170_led_unregister(struct ar9170 *ar);
#endif /* CONFIG_CARL9170_LEDS */
int carl9170_led_init(struct ar9170 *ar);
int carl9170_led_set_state(struct ar9170 *ar, const u32 led_state);

/* PHY / RF */
int carl9170_set_channel(struct ar9170 *ar, struct ieee80211_channel *channel,
	enum nl80211_channel_type bw, enum carl9170_rf_init_mode rfi);
int carl9170_get_noisefloor(struct ar9170 *ar);

/* FW */
int carl9170_parse_firmware(struct ar9170 *ar);
int carl9170_fw_fix_eeprom(struct ar9170 *ar);

extern struct ieee80211_rate __carl9170_ratetable[];
extern int modparam_noht;

static inline struct ar9170 *carl9170_get_priv(struct carl9170_vif *carl_vif)
{
	return container_of(carl_vif, struct ar9170,
			    vif_priv[carl_vif->id]);
}

static inline struct ieee80211_hdr *carl9170_get_hdr(struct sk_buff *skb)
{
	return (void *)((struct _carl9170_tx_superframe *)
		skb->data)->frame_data;
}

static inline u16 get_seq_h(struct ieee80211_hdr *hdr)
{
	return le16_to_cpu(hdr->seq_ctrl) >> 4;
}

static inline u16 carl9170_get_seq(struct sk_buff *skb)
{
	return get_seq_h(carl9170_get_hdr(skb));
}

static inline u16 get_tid_h(struct ieee80211_hdr *hdr)
{
	return (ieee80211_get_qos_ctl(hdr))[0] & IEEE80211_QOS_CTL_TID_MASK;
}

static inline u16 carl9170_get_tid(struct sk_buff *skb)
{
	return get_tid_h(carl9170_get_hdr(skb));
}

static inline struct ieee80211_vif *
carl9170_get_vif(struct carl9170_vif_info *priv)
{
	return container_of((void *)priv, struct ieee80211_vif, drv_priv);
}

/* Protected by ar->mutex or RCU */
static inline struct ieee80211_vif *carl9170_get_main_vif(struct ar9170 *ar)
{
	struct carl9170_vif_info *cvif;

	list_for_each_entry_rcu(cvif, &ar->vif_list, list) {
		if (cvif->active)
			return carl9170_get_vif(cvif);
	}

	return NULL;
}

static inline bool is_main_vif(struct ar9170 *ar, struct ieee80211_vif *vif)
{
	bool ret;

	rcu_read_lock();
	ret = (carl9170_get_main_vif(ar) == vif);
	rcu_read_unlock();
	return ret;
}

#endif /* __CARL9170_H */
Commit	Line	Data
fe8ee9ad CL	1	/*
	2	* Atheros CARL9170 driver
	3	*
	4	* Driver specific definitions
	5	*
	6	* Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
	7	* Copyright 2009, 2010, Christian Lamparter <chunkeey@googlemail.com>
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License as published by
	11	* the Free Software Foundation; either version 2 of the License, or
	12	* (at your option) any later version.
	13	*
	14	* This program is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	* GNU General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU General Public License
	20	* along with this program; see the file COPYING. If not, see
	21	* http://www.gnu.org/licenses/.
	22	*
	23	* This file incorporates work covered by the following copyright and
	24	* permission notice:
	25	* Copyright (c) 2007-2008 Atheros Communications, Inc.
	26	*
	27	* Permission to use, copy, modify, and/or distribute this software for any
	28	* purpose with or without fee is hereby granted, provided that the above
	29	* copyright notice and this permission notice appear in all copies.
	30	*
	31	* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
	32	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
	33	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
	34	* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
	35	* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
	36	* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
	37	* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
	38	*/
	39	#ifndef __CARL9170_H
	40	#define __CARL9170_H
	41
	42	#include <linux/kernel.h>
	43	#include <linux/firmware.h>
	44	#include <linux/completion.h>
	45	#include <linux/spinlock.h>
	46	#include <net/cfg80211.h>
	47	#include <net/mac80211.h>
	48	#include <linux/usb.h>
	49	#ifdef CONFIG_CARL9170_LEDS
	50	#include <linux/leds.h>
8e7ce893	51	#endif /* CONFIG_CARL9170_LEDS */
fe8ee9ad CL	52	#ifdef CONFIG_CARL9170_WPC
	53	#include <linux/input.h>
	54	#endif /* CONFIG_CARL9170_WPC */
	55	#include "eeprom.h"
	56	#include "wlan.h"
	57	#include "hw.h"
	58	#include "fwdesc.h"
	59	#include "fwcmd.h"
	60	#include "../regd.h"
	61
	62	#ifdef CONFIG_CARL9170_DEBUGFS
	63	#include "debug.h"
	64	#endif /* CONFIG_CARL9170_DEBUGFS */
	65
	66	#define CARL9170FW_NAME "carl9170-1.fw"
	67
	68	#define PAYLOAD_MAX (CARL9170_MAX_CMD_LEN / 4 - 1)
	69
	70	enum carl9170_rf_init_mode {
	71	CARL9170_RFI_NONE,
	72	CARL9170_RFI_WARM,
	73	CARL9170_RFI_COLD,
	74	};
	75
	76	#define CARL9170_MAX_RX_BUFFER_SIZE 8192
	77
	78	enum carl9170_device_state {
	79	CARL9170_UNKNOWN_STATE,
	80	CARL9170_STOPPED,
	81	CARL9170_IDLE,
	82	CARL9170_STARTED,
	83	};
	84
	85	#define CARL9170_NUM_TID 16
	86	#define WME_BA_BMP_SIZE 64
	87	#define CARL9170_TX_USER_RATE_TRIES 3
	88
	89	#define WME_AC_BE 2
	90	#define WME_AC_BK 3
	91	#define WME_AC_VI 1
	92	#define WME_AC_VO 0
	93
	94	#define TID_TO_WME_AC(_tid) \
	95	((((_tid) == 0) \|\| ((_tid) == 3)) ? WME_AC_BE : \
	96	(((_tid) == 1) \|\| ((_tid) == 2)) ? WME_AC_BK : \
	97	(((_tid) == 4) \|\| ((_tid) == 5)) ? WME_AC_VI : \
	98	WME_AC_VO)
	99
	100	#define SEQ_DIFF(_start, _seq) \
	101	(((_start) - (_seq)) & 0x0fff)
	102	#define SEQ_PREV(_seq) \
	103	(((_seq) - 1) & 0x0fff)
	104	#define SEQ_NEXT(_seq) \
	105	(((_seq) + 1) & 0x0fff)
	106	#define BAW_WITHIN(_start, _bawsz, _seqno) \
	107	((((_seqno) - (_start)) & 0xfff) < (_bawsz))
	108
	109	enum carl9170_tid_state {
	110	CARL9170_TID_STATE_INVALID,
	111	CARL9170_TID_STATE_KILLED,
	112	CARL9170_TID_STATE_SHUTDOWN,
	113	CARL9170_TID_STATE_SUSPEND,
	114	CARL9170_TID_STATE_PROGRESS,
	115	CARL9170_TID_STATE_IDLE,
116	CARL9170_TID_STATE_XMIT,
117	};
118
119	#define CARL9170_BAW_BITS (2 * WME_BA_BMP_SIZE)
120	#define CARL9170_BAW_SIZE (BITS_TO_LONGS(CARL9170_BAW_BITS))
121	#define CARL9170_BAW_LEN (DIV_ROUND_UP(CARL9170_BAW_BITS, BITS_PER_BYTE))
122
123	struct carl9170_sta_tid {
124	/* must be the first entry! */
125	struct list_head list;
126
127	/* temporary list for RCU unlink procedure */
128	struct list_head tmp_list;
129
130	/* lock for the following data structures */
131	spinlock_t lock;
132
133	unsigned int counter;
134	enum carl9170_tid_state state;
135	u8 tid; /* TID number ( 0 - 15 ) */
136	u16 max; /* max. AMPDU size */
137
138	u16 snx; /* awaiting _next_ frame */
139	u16 hsn; /* highest _queued_ sequence */
140	u16 bsn; /* base of the tx/agg bitmap */
141	unsigned long bitmap[CARL9170_BAW_SIZE];
142
143	/* Preaggregation reorder queue */
144	struct sk_buff_head queue;
145	};
146
147	#define CARL9170_QUEUE_TIMEOUT 256
148	#define CARL9170_BUMP_QUEUE 1000
149	#define CARL9170_TX_TIMEOUT 2500
150	#define CARL9170_JANITOR_DELAY 128
151	#define CARL9170_QUEUE_STUCK_TIMEOUT 5500
152
153	#define CARL9170_NUM_TX_AGG_MAX 30
154
155	/*
156	* Tradeoff between stability/latency and speed.
157	*
158	* AR9170_TXQ_DEPTH is devised by dividing the amount of available
159	* tx buffers with the size of a full ethernet frame + overhead.
160	*
161	* Naturally: The higher the limit, the faster the device CAN send.
162	* However, even a slight over-commitment at the wrong time and the
163	* hardware is doomed to send all already-queued frames at suboptimal
25985edc	164	* rates. This in turn leads to an enormous amount of unsuccessful
fe8ee9ad CL	165	* retries => Latency goes up, whereas the throughput goes down. CRASH!
	166	*/
	167	#define CARL9170_NUM_TX_LIMIT_HARD ((AR9170_TXQ_DEPTH * 3) / 2)
	168	#define CARL9170_NUM_TX_LIMIT_SOFT (AR9170_TXQ_DEPTH)
	169
	170	struct carl9170_tx_queue_stats {
	171	unsigned int count;
	172	unsigned int limit;
	173	unsigned int len;
	174	};
	175
	176	struct carl9170_vif {
	177	unsigned int id;
	178	struct ieee80211_vif *vif;
	179	};
	180
	181	struct carl9170_vif_info {
	182	struct list_head list;
	183	bool active;
	184	unsigned int id;
	185	struct sk_buff *beacon;
	186	bool enable_beacon;
	187	};
	188
	189	#define AR9170_NUM_RX_URBS 16
	190	#define AR9170_NUM_RX_URBS_MUL 2
	191	#define AR9170_NUM_TX_URBS 8
	192	#define AR9170_NUM_RX_URBS_POOL (AR9170_NUM_RX_URBS_MUL * AR9170_NUM_RX_URBS)
	193
	194	enum carl9170_device_features {
	195	CARL9170_WPS_BUTTON = BIT(0),
	196	CARL9170_ONE_LED = BIT(1),
	197	};
	198
	199	#ifdef CONFIG_CARL9170_LEDS
	200	struct ar9170;
	201
	202	struct carl9170_led {
	203	struct ar9170 *ar;
	204	struct led_classdev l;
	205	char name[32];
	206	unsigned int toggled;
	207	bool last_state;
	208	bool registered;
	209	};
	210	#endif /* CONFIG_CARL9170_LEDS */
	211
	212	enum carl9170_restart_reasons {
	213	CARL9170_RR_NO_REASON = 0,
	214	CARL9170_RR_FATAL_FIRMWARE_ERROR,
	215	CARL9170_RR_TOO_MANY_FIRMWARE_ERRORS,
	216	CARL9170_RR_WATCHDOG,
	217	CARL9170_RR_STUCK_TX,
e4a668c5	218	CARL9170_RR_UNRESPONSIVE_DEVICE,
fe8ee9ad CL	219	CARL9170_RR_COMMAND_TIMEOUT,
	220	CARL9170_RR_TOO_MANY_PHY_ERRORS,
	221	CARL9170_RR_LOST_RSP,
	222	CARL9170_RR_INVALID_RSP,
	223	CARL9170_RR_USER_REQUEST,
	224
	225	__CARL9170_RR_LAST,
	226	};
	227
	228	enum carl9170_erp_modes {
	229	CARL9170_ERP_INVALID,
	230	CARL9170_ERP_AUTO,
	231	CARL9170_ERP_MAC80211,
	232	CARL9170_ERP_OFF,
	233	CARL9170_ERP_CTS,
	234	CARL9170_ERP_RTS,
	235	__CARL9170_ERP_NUM,
	236	};
	237
	238	struct ar9170 {
	239	struct ath_common common;
	240	struct ieee80211_hw *hw;
	241	struct mutex mutex;
	242	enum carl9170_device_state state;
	243	spinlock_t state_lock;
	244	enum carl9170_restart_reasons last_reason;
	245	bool registered;
	246
	247	/* USB */
	248	struct usb_device *udev;
	249	struct usb_interface *intf;
	250	struct usb_anchor rx_anch;
	251	struct usb_anchor rx_work;
	252	struct usb_anchor rx_pool;
	253	struct usb_anchor tx_wait;
	254	struct usb_anchor tx_anch;
	255	struct usb_anchor tx_cmd;
	256	struct usb_anchor tx_err;
	257	struct tasklet_struct usb_tasklet;
	258	atomic_t tx_cmd_urbs;
	259	atomic_t tx_anch_urbs;
	260	atomic_t rx_anch_urbs;
	261	atomic_t rx_work_urbs;
	262	atomic_t rx_pool_urbs;
	263	kernel_ulong_t features;
	264
	265	/* firmware settings */
	266	struct completion fw_load_wait;
	267	struct completion fw_boot_wait;
	268	struct {
	269	const struct carl9170fw_desc_head *desc;
	270	const struct firmware *fw;
	271	unsigned int offset;
	272	unsigned int address;
	273	unsigned int cmd_bufs;
	274	unsigned int api_version;
	275	unsigned int vif_num;
	276	unsigned int err_counter;
	277	unsigned int bug_counter;
	278	u32 beacon_addr;
	279	unsigned int beacon_max_len;
	280	bool rx_stream;
	281	bool tx_stream;
5c895691	282	bool rx_filter;
fe8ee9ad CL	283	unsigned int mem_blocks;
	284	unsigned int mem_block_size;
	285	unsigned int rx_size;
aa32452d	286	unsigned int tx_seq_table;
fe8ee9ad CL	287	} fw;
	288
	289	/* reset / stuck frames/queue detection */
	290	struct work_struct restart_work;
e4a668c5	291	struct work_struct ping_work;
fe8ee9ad CL	292	unsigned int restart_counter;
	293	unsigned long queue_stop_timeout[__AR9170_NUM_TXQ];
	294	unsigned long max_queue_stop_timeout[__AR9170_NUM_TXQ];
	295	bool needs_full_reset;
	296	atomic_t pending_restarts;
	297
	298	/* interface mode settings */
	299	struct list_head vif_list;
	300	unsigned long vif_bitmap;
	301	unsigned int vifs;
	302	struct carl9170_vif vif_priv[AR9170_MAX_VIRTUAL_MAC];
	303
	304	/* beaconing */
	305	spinlock_t beacon_lock;
	306	unsigned int global_pretbtt;
	307	unsigned int global_beacon_int;
	308	struct carl9170_vif_info *beacon_iter;
	309	unsigned int beacon_enabled;
	310
	311	/* cryptographic engine */
	312	u64 usedkeys;
	313	bool rx_software_decryption;
	314	bool disable_offload;
	315
	316	/* filter settings */
	317	u64 cur_mc_hash;
	318	u32 cur_filter;
	319	unsigned int filter_state;
5c895691	320	unsigned int rx_filter_caps;
fe8ee9ad CL	321	bool sniffer_enabled;
	322
	323	/* MAC */
	324	enum carl9170_erp_modes erp_mode;
	325
	326	/* PHY */
	327	struct ieee80211_channel *channel;
9adc9e0f	328	int noise[4];
fe8ee9ad CL	329	unsigned int chan_fail;
	330	unsigned int total_chan_fail;
	331	u8 heavy_clip;
73576110	332	u8 ht_settings;
fe8ee9ad CL	333
	334	/* power calibration data */
	335	u8 power_5G_leg[4];
	336	u8 power_2G_cck[4];
	337	u8 power_2G_ofdm[4];
	338	u8 power_5G_ht20[8];
	339	u8 power_5G_ht40[8];
	340	u8 power_2G_ht20[8];
	341	u8 power_2G_ht40[8];
	342
	343	#ifdef CONFIG_CARL9170_LEDS
	344	/* LED */
	345	struct delayed_work led_work;
	346	struct carl9170_led leds[AR9170_NUM_LEDS];
	347	#endif /* CONFIG_CARL9170_LEDS */
	348
	349	/* qos queue settings */
	350	spinlock_t tx_stats_lock;
	351	struct carl9170_tx_queue_stats tx_stats[__AR9170_NUM_TXQ];
	352	struct ieee80211_tx_queue_params edcf[5];
	353	struct completion tx_flush;
	354
	355	/* CMD */
	356	int cmd_seq;
	357	int readlen;
	358	u8 *readbuf;
	359	spinlock_t cmd_lock;
	360	struct completion cmd_wait;
	361	union {
	362	__le32 cmd_buf[PAYLOAD_MAX + 1];
	363	struct carl9170_cmd cmd;
	364	struct carl9170_rsp rsp;
	365	};
	366
	367	/* statistics */
	368	unsigned int tx_dropped;
	369	unsigned int tx_ack_failures;
	370	unsigned int tx_fcs_errors;
fe8ee9ad CL	371	unsigned int rx_dropped;
	372
	373	/* EEPROM */
	374	struct ar9170_eeprom eeprom;
	375
	376	/* tx queuing */
	377	struct sk_buff_head tx_pending[__AR9170_NUM_TXQ];
	378	struct sk_buff_head tx_status[__AR9170_NUM_TXQ];
	379	struct delayed_work tx_janitor;
	380	unsigned long tx_janitor_last_run;
	381	bool tx_schedule;
	382
	383	/* tx ampdu */
	384	struct work_struct ampdu_work;
	385	spinlock_t tx_ampdu_list_lock;
	386	struct carl9170_sta_tid *tx_ampdu_iter;
	387	struct list_head tx_ampdu_list;
	388	atomic_t tx_ampdu_upload;
	389	atomic_t tx_ampdu_scheduler;
	390	atomic_t tx_total_pending;
	391	atomic_t tx_total_queued;
	392	unsigned int tx_ampdu_list_len;
	393	int current_density;
	394	int current_factor;
	395	bool tx_ampdu_schedule;
	396
	397	/* internal memory management */
	398	spinlock_t mem_lock;
	399	unsigned long *mem_bitmap;
	400	atomic_t mem_free_blocks;
	401	atomic_t mem_allocs;
	402
	403	/* rxstream mpdu merge */
	404	struct ar9170_rx_head rx_plcp;
	405	bool rx_has_plcp;
	406	struct sk_buff *rx_failover;
	407	int rx_failover_missing;
	408
	409	#ifdef CONFIG_CARL9170_WPC
	410	struct {
	411	bool pbc_state;
	412	struct input_dev *pbc;
	413	char name[32];
	414	char phys[32];
	415	} wps;
	416	#endif /* CONFIG_CARL9170_WPC */
	417
	418	#ifdef CONFIG_CARL9170_DEBUGFS
	419	struct carl9170_debug debug;
	420	struct dentry *debug_dir;
	421	#endif /* CONFIG_CARL9170_DEBUGFS */
	422
	423	/* PSM */
	424	struct work_struct ps_work;
	425	struct {
	426	unsigned int dtim_counter;
	427	unsigned long last_beacon;
	428	unsigned long last_action;
	429	unsigned long last_slept;
	430	unsigned int sleep_ms;
	431	unsigned int off_override;
	432	bool state;
	433	} ps;
	434	};
435
436	enum carl9170_ps_off_override_reasons {
437	PS_OFF_VIF = BIT(0),
438	PS_OFF_BCN = BIT(1),
439	PS_OFF_5GHZ = BIT(2),
440	};
441
442	struct carl9170_ba_stats {
443	u8 ampdu_len;
444	u8 ampdu_ack_len;
445	bool clear;
446	};
447
448	struct carl9170_sta_info {
449	bool ht_sta;
450	unsigned int ampdu_max_len;
451	struct carl9170_sta_tid *agg[CARL9170_NUM_TID];
452	struct carl9170_ba_stats stats[CARL9170_NUM_TID];
453	};
454
455	struct carl9170_tx_info {
456	unsigned long timeout;
457	struct ar9170 *ar;
458	struct kref ref;
459	};
460
461	#define CHK_DEV_STATE(a, s) (((struct ar9170 *)a)->state >= (s))
462	#define IS_INITIALIZED(a) (CHK_DEV_STATE(a, CARL9170_STOPPED))
463	#define IS_ACCEPTING_CMD(a) (CHK_DEV_STATE(a, CARL9170_IDLE))
464	#define IS_STARTED(a) (CHK_DEV_STATE(a, CARL9170_STARTED))
465
466	static inline void __carl9170_set_state(struct ar9170 *ar,
467	enum carl9170_device_state newstate)
468	{
469	ar->state = newstate;
470	}
471
472	static inline void carl9170_set_state(struct ar9170 *ar,
473	enum carl9170_device_state newstate)
474	{
475	unsigned long flags;
476
477	spin_lock_irqsave(&ar->state_lock, flags);
478	__carl9170_set_state(ar, newstate);
479	spin_unlock_irqrestore(&ar->state_lock, flags);
480	}
481
482	static inline void carl9170_set_state_when(struct ar9170 *ar,
483	enum carl9170_device_state min, enum carl9170_device_state newstate)
484	{
485	unsigned long flags;
486
487	spin_lock_irqsave(&ar->state_lock, flags);
488	if (CHK_DEV_STATE(ar, min))
489	__carl9170_set_state(ar, newstate);
490	spin_unlock_irqrestore(&ar->state_lock, flags);
491	}
492
493	/* exported interface */
494	void *carl9170_alloc(size_t priv_size);
495	int carl9170_register(struct ar9170 *ar);
496	void carl9170_unregister(struct ar9170 *ar);
497	void carl9170_free(struct ar9170 *ar);
498	void carl9170_restart(struct ar9170 *ar, const enum carl9170_restart_reasons r);
499	void carl9170_ps_check(struct ar9170 *ar);
500
501	/* USB back-end */
502	int carl9170_usb_open(struct ar9170 *ar);
503	void carl9170_usb_stop(struct ar9170 *ar);
504	void carl9170_usb_tx(struct ar9170 ar, struct sk_buff skb);
505	void carl9170_usb_handle_tx_err(struct ar9170 *ar);
506	int carl9170_exec_cmd(struct ar9170 *ar, const enum carl9170_cmd_oids,
507	u32 plen, void payload, u32 rlen, void resp);
508	int __carl9170_exec_cmd(struct ar9170 ar, struct carl9170_cmd cmd,
509	const bool free_buf);
510	int carl9170_usb_restart(struct ar9170 *ar);
511	void carl9170_usb_reset(struct ar9170 *ar);
512
513	/* MAC */
514	int carl9170_init_mac(struct ar9170 *ar);
515	int carl9170_set_qos(struct ar9170 *ar);
516	int carl9170_update_multicast(struct ar9170 *ar, const u64 mc_hast);
517	int carl9170_mod_virtual_mac(struct ar9170 *ar, const unsigned int id,
518	const u8 *mac);
519	int carl9170_set_operating_mode(struct ar9170 *ar);
520	int carl9170_set_beacon_timers(struct ar9170 *ar);
521	int carl9170_set_dyn_sifs_ack(struct ar9170 *ar);
522	int carl9170_set_rts_cts_rate(struct ar9170 *ar);
523	int carl9170_set_ampdu_settings(struct ar9170 *ar);
524	int carl9170_set_slot_time(struct ar9170 *ar);
525	int carl9170_set_mac_rates(struct ar9170 *ar);
526	int carl9170_set_hwretry_limit(struct ar9170 *ar, const u32 max_retry);
527	int carl9170_update_beacon(struct ar9170 *ar, const bool submit);
528	int carl9170_upload_key(struct ar9170 ar, const u8 id, const u8 mac,
529	const u8 ktype, const u8 keyidx, const u8 *keydata, const int keylen);
530	int carl9170_disable_key(struct ar9170 *ar, const u8 id);
531
532	/* RX */
533	void carl9170_rx(struct ar9170 ar, void buf, unsigned int len);
534	void carl9170_handle_command_response(struct ar9170 ar, void buf, u32 len);
535
536	/* TX */
7bb45683	537	void carl9170_op_tx(struct ieee80211_hw hw, struct sk_buff skb);
fe8ee9ad CL	538	void carl9170_tx_janitor(struct work_struct *work);
	539	void carl9170_tx_process_status(struct ar9170 *ar,
	540	const struct carl9170_rsp *cmd);
	541	void carl9170_tx_status(struct ar9170 ar, struct sk_buff skb,
	542	const bool success);
	543	void carl9170_tx_callback(struct ar9170 ar, struct sk_buff skb);
	544	void carl9170_tx_drop(struct ar9170 ar, struct sk_buff skb);
	545	void carl9170_tx_scheduler(struct ar9170 *ar);
	546	void carl9170_tx_get_skb(struct sk_buff *skb);
	547	int carl9170_tx_put_skb(struct sk_buff *skb);
	548
	549	/* LEDs */
	550	#ifdef CONFIG_CARL9170_LEDS
	551	int carl9170_led_register(struct ar9170 *ar);
	552	void carl9170_led_unregister(struct ar9170 *ar);
	553	#endif /* CONFIG_CARL9170_LEDS */
	554	int carl9170_led_init(struct ar9170 *ar);
	555	int carl9170_led_set_state(struct ar9170 *ar, const u32 led_state);
	556
	557	/* PHY / RF */
	558	int carl9170_set_channel(struct ar9170 ar, struct ieee80211_channel channel,
	559	enum nl80211_channel_type bw, enum carl9170_rf_init_mode rfi);
	560	int carl9170_get_noisefloor(struct ar9170 *ar);
	561
	562	/* FW */
	563	int carl9170_parse_firmware(struct ar9170 *ar);
	564	int carl9170_fw_fix_eeprom(struct ar9170 *ar);
	565
	566	extern struct ieee80211_rate __carl9170_ratetable[];
	567	extern int modparam_noht;
	568
	569	static inline struct ar9170 carl9170_get_priv(struct carl9170_vif carl_vif)
	570	{
	571	return container_of(carl_vif, struct ar9170,
	572	vif_priv[carl_vif->id]);
	573	}
	574
	575	static inline struct ieee80211_hdr carl9170_get_hdr(struct sk_buff skb)
	576	{
	577	return (void )((struct _carl9170_tx_superframe )
	578	skb->data)->frame_data;
	579	}
	580
	581	static inline u16 get_seq_h(struct ieee80211_hdr *hdr)
	582	{
	583	return le16_to_cpu(hdr->seq_ctrl) >> 4;
	584	}
	585
	586	static inline u16 carl9170_get_seq(struct sk_buff *skb)
	587	{
	588	return get_seq_h(carl9170_get_hdr(skb));
	589	}
	590
	591	static inline u16 get_tid_h(struct ieee80211_hdr *hdr)
	592	{
	593	return (ieee80211_get_qos_ctl(hdr))[0] & IEEE80211_QOS_CTL_TID_MASK;
	594	}
	595
	596	static inline u16 carl9170_get_tid(struct sk_buff *skb)
	597	{
	598	return get_tid_h(carl9170_get_hdr(skb));
	599	}
	600
	601	static inline struct ieee80211_vif *
602	carl9170_get_vif(struct carl9170_vif_info *priv)
603	{
604	return container_of((void *)priv, struct ieee80211_vif, drv_priv);
605	}
606
607	/* Protected by ar->mutex or RCU */
608	static inline struct ieee80211_vif carl9170_get_main_vif(struct ar9170 ar)
609	{
610	struct carl9170_vif_info *cvif;
611
612	list_for_each_entry_rcu(cvif, &ar->vif_list, list) {
613	if (cvif->active)
614	return carl9170_get_vif(cvif);
615	}
616
617	return NULL;
618	}
619
620	static inline bool is_main_vif(struct ar9170 ar, struct ieee80211_vif vif)
621	{
622	bool ret;
623
624	rcu_read_lock();
625	ret = (carl9170_get_main_vif(ar) == vif);
626	rcu_read_unlock();
627	return ret;
628	}
629
630	#endif /* __CARL9170_H */