linux/drivers/net/wireless/mwifiex/main.h

/*
 * Marvell Wireless LAN device driver: major data structures and prototypes
 *
 * Copyright (C) 2011, Marvell International Ltd.
 *
 * This software file (the "File") is distributed by Marvell International
 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
 * (the "License").  You may use, redistribute and/or modify this File in
 * accordance with the terms and conditions of the License, a copy of which
 * is available by writing to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
 *
 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
 * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
 * this warranty disclaimer.
 */

#ifndef _MWIFIEX_MAIN_H_
#define _MWIFIEX_MAIN_H_

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/sched.h>
#include <linux/semaphore.h>
#include <linux/ip.h>
#include <linux/skbuff.h>
#include <linux/if_arp.h>
#include <linux/etherdevice.h>
#include <net/sock.h>
#include <net/lib80211.h>
#include <linux/firmware.h>
#include <linux/ctype.h>
#include <linux/of.h>

#include "decl.h"
#include "ioctl.h"
#include "util.h"
#include "fw.h"
#include "pcie.h"

extern const char driver_version[];

enum {
	MWIFIEX_ASYNC_CMD,
	MWIFIEX_SYNC_CMD
};

#define MWIFIEX_MAX_AP				64

#define MWIFIEX_DEFAULT_WATCHDOG_TIMEOUT	(5 * HZ)

#define MWIFIEX_TIMER_10S			10000
#define MWIFIEX_TIMER_1S			1000

#define MAX_TX_PENDING      100
#define LOW_TX_PENDING      80

#define MWIFIEX_UPLD_SIZE               (2312)

#define MAX_EVENT_SIZE                  2048

#define ARP_FILTER_MAX_BUF_SIZE         68

#define MWIFIEX_KEY_BUFFER_SIZE			16
#define MWIFIEX_DEFAULT_LISTEN_INTERVAL 10
#define MWIFIEX_MAX_REGION_CODE         7

#define DEFAULT_BCN_AVG_FACTOR          8
#define DEFAULT_DATA_AVG_FACTOR         8

#define FIRST_VALID_CHANNEL				0xff
#define DEFAULT_AD_HOC_CHANNEL			6
#define DEFAULT_AD_HOC_CHANNEL_A		36

#define DEFAULT_BCN_MISS_TIMEOUT		5

#define MAX_SCAN_BEACON_BUFFER			8000

#define SCAN_BEACON_ENTRY_PAD			6

#define MWIFIEX_PASSIVE_SCAN_CHAN_TIME	110
#define MWIFIEX_ACTIVE_SCAN_CHAN_TIME	30
#define MWIFIEX_SPECIFIC_SCAN_CHAN_TIME	30

#define SCAN_RSSI(RSSI)					(0x100 - ((u8)(RSSI)))

#define MWIFIEX_MAX_TOTAL_SCAN_TIME	(MWIFIEX_TIMER_10S - MWIFIEX_TIMER_1S)

#define MWIFIEX_MAX_SCAN_DELAY_CNT			50
#define MWIFIEX_MAX_EMPTY_TX_Q_CNT			10
#define MWIFIEX_SCAN_DELAY_MSEC				20

#define MWIFIEX_MIN_TX_PENDING_TO_CANCEL_SCAN		2

#define RSN_GTK_OUI_OFFSET				2

#define MWIFIEX_OUI_NOT_PRESENT			0
#define MWIFIEX_OUI_PRESENT				1

#define PKT_TYPE_MGMT	0xE5

/*
 * Do not check for data_received for USB, as data_received
 * is handled in mwifiex_usb_recv for USB
 */
#define IS_CARD_RX_RCVD(adapter) (adapter->cmd_resp_received || \
				adapter->event_received || \
				((adapter->iface_type != MWIFIEX_USB) && \
				adapter->data_received) || \
				((adapter->iface_type == MWIFIEX_USB) && \
				!skb_queue_empty(&adapter->usb_rx_data_q)))

#define MWIFIEX_TYPE_CMD				1
#define MWIFIEX_TYPE_DATA				0
#define MWIFIEX_TYPE_EVENT				3

#define MAX_BITMAP_RATES_SIZE			10

#define MAX_CHANNEL_BAND_BG     14
#define MAX_CHANNEL_BAND_A      165

#define MAX_FREQUENCY_BAND_BG   2484

#define MWIFIEX_EVENT_HEADER_LEN           4
#define MWIFIEX_UAP_EVENT_EXTRA_HEADER	   2

#define MWIFIEX_TYPE_LEN			4
#define MWIFIEX_USB_TYPE_CMD			0xF00DFACE
#define MWIFIEX_USB_TYPE_DATA			0xBEADC0DE
#define MWIFIEX_USB_TYPE_EVENT			0xBEEFFACE

/* Threshold for tx_timeout_cnt before we trigger a card reset */
#define TX_TIMEOUT_THRESHOLD	6

struct mwifiex_dbg {
	u32 num_cmd_host_to_card_failure;
	u32 num_cmd_sleep_cfm_host_to_card_failure;
	u32 num_tx_host_to_card_failure;
	u32 num_event_deauth;
	u32 num_event_disassoc;
	u32 num_event_link_lost;
	u32 num_cmd_deauth;
	u32 num_cmd_assoc_success;
	u32 num_cmd_assoc_failure;
	u32 num_tx_timeout;
	u32 num_cmd_timeout;
	u16 timeout_cmd_id;
	u16 timeout_cmd_act;
	u16 last_cmd_id[DBG_CMD_NUM];
	u16 last_cmd_act[DBG_CMD_NUM];
	u16 last_cmd_index;
	u16 last_cmd_resp_id[DBG_CMD_NUM];
	u16 last_cmd_resp_index;
	u16 last_event[DBG_CMD_NUM];
	u16 last_event_index;
};

enum MWIFIEX_HARDWARE_STATUS {
	MWIFIEX_HW_STATUS_READY,
	MWIFIEX_HW_STATUS_INITIALIZING,
	MWIFIEX_HW_STATUS_FW_READY,
	MWIFIEX_HW_STATUS_INIT_DONE,
	MWIFIEX_HW_STATUS_RESET,
	MWIFIEX_HW_STATUS_CLOSING,
	MWIFIEX_HW_STATUS_NOT_READY
};

enum MWIFIEX_802_11_POWER_MODE {
	MWIFIEX_802_11_POWER_MODE_CAM,
	MWIFIEX_802_11_POWER_MODE_PSP
};

struct mwifiex_tx_param {
	u32 next_pkt_len;
};

enum MWIFIEX_PS_STATE {
	PS_STATE_AWAKE,
	PS_STATE_PRE_SLEEP,
	PS_STATE_SLEEP_CFM,
	PS_STATE_SLEEP
};

enum mwifiex_iface_type {
	MWIFIEX_SDIO,
	MWIFIEX_PCIE,
	MWIFIEX_USB
};

struct mwifiex_add_ba_param {
	u32 tx_win_size;
	u32 rx_win_size;
	u32 timeout;
};

struct mwifiex_tx_aggr {
	u8 ampdu_user;
	u8 ampdu_ap;
	u8 amsdu;
};

struct mwifiex_ra_list_tbl {
	struct list_head list;
	struct sk_buff_head skb_head;
	u8 ra[ETH_ALEN];
	u32 is_11n_enabled;
	u16 max_amsdu;
	u16 ba_pkt_count;
	u8 ba_packet_thr;
	u16 total_pkt_count;
};

struct mwifiex_tid_tbl {
	struct list_head ra_list;
};

#define WMM_HIGHEST_PRIORITY		7
#define HIGH_PRIO_TID				7
#define LOW_PRIO_TID				0

struct mwifiex_wmm_desc {
	struct mwifiex_tid_tbl tid_tbl_ptr[MAX_NUM_TID];
	u32 packets_out[MAX_NUM_TID];
	/* spin lock to protect ra_list */
	spinlock_t ra_list_spinlock;
	struct mwifiex_wmm_ac_status ac_status[IEEE80211_NUM_ACS];
	enum mwifiex_wmm_ac_e ac_down_graded_vals[IEEE80211_NUM_ACS];
	u32 drv_pkt_delay_max;
	u8 queue_priority[IEEE80211_NUM_ACS];
	u32 user_pri_pkt_tx_ctrl[WMM_HIGHEST_PRIORITY + 1];	/* UP: 0 to 7 */
	/* Number of transmit packets queued */
	atomic_t tx_pkts_queued;
	/* Tracks highest priority with a packet queued */
	atomic_t highest_queued_prio;
};

struct mwifiex_802_11_security {
	u8 wpa_enabled;
	u8 wpa2_enabled;
	u8 wapi_enabled;
	u8 wapi_key_on;
	u8 wep_enabled;
	u32 authentication_mode;
	u8 is_authtype_auto;
	u32 encryption_mode;
};

struct ieee_types_header {
	u8 element_id;
	u8 len;
} __packed;

struct ieee_types_vendor_specific {
	struct ieee_types_vendor_header vend_hdr;
	u8 data[IEEE_MAX_IE_SIZE - sizeof(struct ieee_types_vendor_header)];
} __packed;

struct ieee_types_generic {
	struct ieee_types_header ieee_hdr;
	u8 data[IEEE_MAX_IE_SIZE - sizeof(struct ieee_types_header)];
} __packed;

struct ieee_types_bss_co_2040 {
	struct ieee_types_header ieee_hdr;
	u8 bss_2040co;
} __packed;

struct ieee_types_extcap {
	struct ieee_types_header ieee_hdr;
	u8 ext_capab[8];
} __packed;

struct mwifiex_bssdescriptor {
	u8 mac_address[ETH_ALEN];
	struct cfg80211_ssid ssid;
	u32 privacy;
	s32 rssi;
	u32 channel;
	u32 freq;
	u16 beacon_period;
	u8 erp_flags;
	u32 bss_mode;
	u8 supported_rates[MWIFIEX_SUPPORTED_RATES];
	u8 data_rates[MWIFIEX_SUPPORTED_RATES];
	/* Network band.
	 * BAND_B(0x01): 'b' band
	 * BAND_G(0x02): 'g' band
	 * BAND_A(0X04): 'a' band
	 */
	u16 bss_band;
	u64 fw_tsf;
	u64 timestamp;
	union ieee_types_phy_param_set phy_param_set;
	union ieee_types_ss_param_set ss_param_set;
	u16 cap_info_bitmap;
	struct ieee_types_wmm_parameter wmm_ie;
	u8  disable_11n;
	struct ieee80211_ht_cap *bcn_ht_cap;
	u16 ht_cap_offset;
	struct ieee80211_ht_operation *bcn_ht_oper;
	u16 ht_info_offset;
	u8 *bcn_bss_co_2040;
	u16 bss_co_2040_offset;
	u8 *bcn_ext_cap;
	u16 ext_cap_offset;
	struct ieee80211_vht_cap *bcn_vht_cap;
	u16 vht_cap_offset;
	struct ieee80211_vht_operation *bcn_vht_oper;
	u16 vht_info_offset;
	struct ieee_types_oper_mode_ntf *oper_mode;
	u16 oper_mode_offset;
	u8 disable_11ac;
	struct ieee_types_vendor_specific *bcn_wpa_ie;
	u16 wpa_offset;
	struct ieee_types_generic *bcn_rsn_ie;
	u16 rsn_offset;
	struct ieee_types_generic *bcn_wapi_ie;
	u16 wapi_offset;
	u8 *beacon_buf;
	u32 beacon_buf_size;
	u8 sensed_11h;
	u8 local_constraint;
	u8 chan_sw_ie_present;
};

struct mwifiex_current_bss_params {
	struct mwifiex_bssdescriptor bss_descriptor;
	u8 wmm_enabled;
	u8 wmm_uapsd_enabled;
	u8 band;
	u32 num_of_rates;
	u8 data_rates[MWIFIEX_SUPPORTED_RATES];
};

struct mwifiex_sleep_params {
	u16 sp_error;
	u16 sp_offset;
	u16 sp_stable_time;
	u8 sp_cal_control;
	u8 sp_ext_sleep_clk;
	u16 sp_reserved;
};

struct mwifiex_sleep_period {
	u16 period;
	u16 reserved;
};

struct mwifiex_wep_key {
	u32 length;
	u32 key_index;
	u32 key_length;
	u8 key_material[MWIFIEX_KEY_BUFFER_SIZE];
};

#define MAX_REGION_CHANNEL_NUM  2

struct mwifiex_chan_freq_power {
	u16 channel;
	u32 freq;
	u16 max_tx_power;
	u8 unsupported;
};

enum state_11d_t {
	DISABLE_11D = 0,
	ENABLE_11D = 1,
};

#define MWIFIEX_MAX_TRIPLET_802_11D		83

struct mwifiex_802_11d_domain_reg {
	u8 country_code[IEEE80211_COUNTRY_STRING_LEN];
	u8 no_of_triplet;
	struct ieee80211_country_ie_triplet
		triplet[MWIFIEX_MAX_TRIPLET_802_11D];
};

struct mwifiex_vendor_spec_cfg_ie {
	u16 mask;
	u16 flag;
	u8 ie[MWIFIEX_MAX_VSIE_LEN];
};

struct wps {
	u8 session_enable;
};

struct mwifiex_roc_cfg {
	u64 cookie;
	struct ieee80211_channel chan;
};

struct mwifiex_adapter;
struct mwifiex_private;

struct mwifiex_private {
	struct mwifiex_adapter *adapter;
	u8 bss_type;
	u8 bss_role;
	u8 bss_priority;
	u8 bss_num;
	u8 bss_started;
	u8 frame_type;
	u8 curr_addr[ETH_ALEN];
	u8 media_connected;
	u32 num_tx_timeout;
	/* track consecutive timeout */
	u8 tx_timeout_cnt;
	struct net_device *netdev;
	struct net_device_stats stats;
	u16 curr_pkt_filter;
	u32 bss_mode;
	u32 pkt_tx_ctrl;
	u16 tx_power_level;
	u8 max_tx_power_level;
	u8 min_tx_power_level;
	u8 tx_rate;
	u8 tx_htinfo;
	u8 rxpd_htinfo;
	u8 rxpd_rate;
	u16 rate_bitmap;
	u16 bitmap_rates[MAX_BITMAP_RATES_SIZE];
	u32 data_rate;
	u8 is_data_rate_auto;
	u16 bcn_avg_factor;
	u16 data_avg_factor;
	s16 data_rssi_last;
	s16 data_nf_last;
	s16 data_rssi_avg;
	s16 data_nf_avg;
	s16 bcn_rssi_last;
	s16 bcn_nf_last;
	s16 bcn_rssi_avg;
	s16 bcn_nf_avg;
	struct mwifiex_bssdescriptor *attempted_bss_desc;
	struct cfg80211_ssid prev_ssid;
	u8 prev_bssid[ETH_ALEN];
	struct mwifiex_current_bss_params curr_bss_params;
	u16 beacon_period;
	u8 dtim_period;
	u16 listen_interval;
	u16 atim_window;
	u8 adhoc_channel;
	u8 adhoc_is_link_sensed;
	u8 adhoc_state;
	struct mwifiex_802_11_security sec_info;
	struct mwifiex_wep_key wep_key[NUM_WEP_KEYS];
	u16 wep_key_curr_index;
	u8 wpa_ie[256];
	u8 wpa_ie_len;
	u8 wpa_is_gtk_set;
	struct host_cmd_ds_802_11_key_material aes_key;
	u8 wapi_ie[256];
	u8 wapi_ie_len;
	u8 *wps_ie;
	u8 wps_ie_len;
	u8 wmm_required;
	u8 wmm_enabled;
	u8 wmm_qosinfo;
	struct mwifiex_wmm_desc wmm;
	atomic_t wmm_tx_pending[IEEE80211_NUM_ACS];
	struct list_head sta_list;
	/* spin lock for associated station list */
	spinlock_t sta_list_spinlock;
	struct list_head tx_ba_stream_tbl_ptr;
	/* spin lock for tx_ba_stream_tbl_ptr queue */
	spinlock_t tx_ba_stream_tbl_lock;
	struct mwifiex_tx_aggr aggr_prio_tbl[MAX_NUM_TID];
	struct mwifiex_add_ba_param add_ba_param;
	u16 rx_seq[MAX_NUM_TID];
	u8 tos_to_tid_inv[MAX_NUM_TID];
	struct list_head rx_reorder_tbl_ptr;
	/* spin lock for rx_reorder_tbl_ptr queue */
	spinlock_t rx_reorder_tbl_lock;
	/* spin lock for Rx packets */
	spinlock_t rx_pkt_lock;

#define MWIFIEX_ASSOC_RSP_BUF_SIZE  500
	u8 assoc_rsp_buf[MWIFIEX_ASSOC_RSP_BUF_SIZE];
	u32 assoc_rsp_size;

#define MWIFIEX_GENIE_BUF_SIZE      256
	u8 gen_ie_buf[MWIFIEX_GENIE_BUF_SIZE];
	u8 gen_ie_buf_len;

	struct mwifiex_vendor_spec_cfg_ie vs_ie[MWIFIEX_MAX_VSIE_NUM];

#define MWIFIEX_ASSOC_TLV_BUF_SIZE  256
	u8 assoc_tlv_buf[MWIFIEX_ASSOC_TLV_BUF_SIZE];
	u8 assoc_tlv_buf_len;

	u8 *curr_bcn_buf;
	u32 curr_bcn_size;
	/* spin lock for beacon buffer */
	spinlock_t curr_bcn_buf_lock;
	struct wireless_dev *wdev;
	struct mwifiex_chan_freq_power cfp;
	char version_str[128];
#ifdef CONFIG_DEBUG_FS
	struct dentry *dfs_dev_dir;
#endif
	u8 nick_name[16];
	u16 current_key_index;
	struct semaphore async_sem;
	u8 report_scan_result;
	struct cfg80211_scan_request *scan_request;
	u8 cfg_bssid[6];
	struct wps wps;
	u8 scan_block;
	s32 cqm_rssi_thold;
	u32 cqm_rssi_hyst;
	u8 subsc_evt_rssi_state;
	struct mwifiex_ds_misc_subsc_evt async_subsc_evt_storage;
	struct mwifiex_ie mgmt_ie[MAX_MGMT_IE_INDEX];
	u16 beacon_idx;
	u16 proberesp_idx;
	u16 assocresp_idx;
	u16 rsn_idx;
	struct timer_list scan_delay_timer;
	u8 ap_11n_enabled;
	u8 ap_11ac_enabled;
	u32 mgmt_frame_mask;
	struct mwifiex_roc_cfg roc_cfg;
	bool scan_aborting;
	u8 csa_chan;
	unsigned long csa_expire_time;
	u8 del_list_idx;
	bool hs2_enabled;
};

enum mwifiex_ba_status {
	BA_SETUP_NONE = 0,
	BA_SETUP_INPROGRESS,
	BA_SETUP_COMPLETE
};

struct mwifiex_tx_ba_stream_tbl {
	struct list_head list;
	int tid;
	u8 ra[ETH_ALEN];
	enum mwifiex_ba_status ba_status;
};

struct mwifiex_rx_reorder_tbl;

struct reorder_tmr_cnxt {
	struct timer_list timer;
	struct mwifiex_rx_reorder_tbl *ptr;
	struct mwifiex_private *priv;
};

struct mwifiex_rx_reorder_tbl {
	struct list_head list;
	int tid;
	u8 ta[ETH_ALEN];
	int start_win;
	int win_size;
	void **rx_reorder_ptr;
	struct reorder_tmr_cnxt timer_context;
	u8 flags;
};

struct mwifiex_bss_prio_node {
	struct list_head list;
	struct mwifiex_private *priv;
};

struct mwifiex_bss_prio_tbl {
	struct list_head bss_prio_head;
	/* spin lock for bss priority  */
	spinlock_t bss_prio_lock;
	struct mwifiex_bss_prio_node *bss_prio_cur;
};

struct cmd_ctrl_node {
	struct list_head list;
	struct mwifiex_private *priv;
	u32 cmd_oid;
	u32 cmd_flag;
	struct sk_buff *cmd_skb;
	struct sk_buff *resp_skb;
	void *data_buf;
	u32 wait_q_enabled;
	struct sk_buff *skb;
	u8 *condition;
	u8 cmd_wait_q_woken;
};

struct mwifiex_bss_priv {
	u8 band;
	u64 fw_tsf;
};

struct mwifiex_tdls_capab {
	__le16 capab;
	u8 rates[32];
	u8 rates_len;
	u8 qos_info;
	u8 coex_2040;
	struct ieee80211_ht_cap ht_capb;
	struct ieee80211_ht_operation ht_oper;
	struct ieee_types_extcap extcap;
	struct ieee_types_generic rsn_ie;
};

/* This is AP/TDLS specific structure which stores information
 * about associated/peer STA
 */
struct mwifiex_sta_node {
	struct list_head list;
	u8 mac_addr[ETH_ALEN];
	u8 is_wmm_enabled;
	u8 is_11n_enabled;
	u8 ampdu_sta[MAX_NUM_TID];
	u16 rx_seq[MAX_NUM_TID];
	u16 max_amsdu;
	u8 tdls_status;
	struct mwifiex_tdls_capab tdls_cap;
};

struct mwifiex_if_ops {
	int (*init_if) (struct mwifiex_adapter *);
	void (*cleanup_if) (struct mwifiex_adapter *);
	int (*check_fw_status) (struct mwifiex_adapter *, u32);
	int (*prog_fw) (struct mwifiex_adapter *, struct mwifiex_fw_image *);
	int (*register_dev) (struct mwifiex_adapter *);
	void (*unregister_dev) (struct mwifiex_adapter *);
	int (*enable_int) (struct mwifiex_adapter *);
	void (*disable_int) (struct mwifiex_adapter *);
	int (*process_int_status) (struct mwifiex_adapter *);
	int (*host_to_card) (struct mwifiex_adapter *, u8, struct sk_buff *,
			     struct mwifiex_tx_param *);
	int (*wakeup) (struct mwifiex_adapter *);
	int (*wakeup_complete) (struct mwifiex_adapter *);

	/* Interface specific functions */
	void (*update_mp_end_port) (struct mwifiex_adapter *, u16);
	void (*cleanup_mpa_buf) (struct mwifiex_adapter *);
	int (*cmdrsp_complete) (struct mwifiex_adapter *, struct sk_buff *);
	int (*event_complete) (struct mwifiex_adapter *, struct sk_buff *);
	int (*data_complete) (struct mwifiex_adapter *);
	int (*init_fw_port) (struct mwifiex_adapter *);
	int (*dnld_fw) (struct mwifiex_adapter *, struct mwifiex_fw_image *);
	void (*card_reset) (struct mwifiex_adapter *);
	int (*clean_pcie_ring) (struct mwifiex_adapter *adapter);
};

struct mwifiex_adapter {
	u8 iface_type;
	struct mwifiex_private *priv[MWIFIEX_MAX_BSS_NUM];
	u8 priv_num;
	const struct firmware *firmware;
	char fw_name[32];
	int winner;
	struct device *dev;
	struct wiphy *wiphy;
	bool surprise_removed;
	u32 fw_release_number;
	u16 init_wait_q_woken;
	wait_queue_head_t init_wait_q;
	void *card;
	struct mwifiex_if_ops if_ops;
	atomic_t rx_pending;
	atomic_t tx_pending;
	atomic_t cmd_pending;
	struct workqueue_struct *workqueue;
	struct work_struct main_work;
	struct mwifiex_bss_prio_tbl bss_prio_tbl[MWIFIEX_MAX_BSS_NUM];
	/* spin lock for init/shutdown */
	spinlock_t mwifiex_lock;
	/* spin lock for main process */
	spinlock_t main_proc_lock;
	u32 mwifiex_processing;
	u16 tx_buf_size;
	u16 curr_tx_buf_size;
	u32 ioport;
	enum MWIFIEX_HARDWARE_STATUS hw_status;
	u16 number_of_antenna;
	u32 fw_cap_info;
	/* spin lock for interrupt handling */
	spinlock_t int_lock;
	u8 int_status;
	u32 event_cause;
	struct sk_buff *event_skb;
	u8 upld_buf[MWIFIEX_UPLD_SIZE];
	u8 data_sent;
	u8 cmd_sent;
	u8 cmd_resp_received;
	u8 event_received;
	u8 data_received;
	u16 seq_num;
	struct cmd_ctrl_node *cmd_pool;
	struct cmd_ctrl_node *curr_cmd;
	/* spin lock for command */
	spinlock_t mwifiex_cmd_lock;
	u32 num_cmd_timeout;
	u16 last_init_cmd;
	struct timer_list cmd_timer;
	struct list_head cmd_free_q;
	/* spin lock for cmd_free_q */
	spinlock_t cmd_free_q_lock;
	struct list_head cmd_pending_q;
	/* spin lock for cmd_pending_q */
	spinlock_t cmd_pending_q_lock;
	struct list_head scan_pending_q;
	/* spin lock for scan_pending_q */
	spinlock_t scan_pending_q_lock;
	struct sk_buff_head usb_rx_data_q;
	u32 scan_processing;
	u16 region_code;
	struct mwifiex_802_11d_domain_reg domain_reg;
	u16 scan_probes;
	u32 scan_mode;
	u16 specific_scan_time;
	u16 active_scan_time;
	u16 passive_scan_time;
	u8 fw_bands;
	u8 adhoc_start_band;
	u8 config_bands;
	struct mwifiex_chan_scan_param_set *scan_channels;
	u8 tx_lock_flag;
	struct mwifiex_sleep_params sleep_params;
	struct mwifiex_sleep_period sleep_period;
	u16 ps_mode;
	u32 ps_state;
	u8 need_to_wakeup;
	u16 multiple_dtim;
	u16 local_listen_interval;
	u16 null_pkt_interval;
	struct sk_buff *sleep_cfm;
	u16 bcn_miss_time_out;
	u16 adhoc_awake_period;
	u8 is_deep_sleep;
	u8 delay_null_pkt;
	u16 delay_to_ps;
	u16 enhanced_ps_mode;
	u8 pm_wakeup_card_req;
	u16 gen_null_pkt;
	u16 pps_uapsd_mode;
	u32 pm_wakeup_fw_try;
	u8 is_hs_configured;
	struct mwifiex_hs_config_param hs_cfg;
	u8 hs_activated;
	u16 hs_activate_wait_q_woken;
	wait_queue_head_t hs_activate_wait_q;
	bool is_suspended;
	u8 event_body[MAX_EVENT_SIZE];
	u32 hw_dot_11n_dev_cap;
	u8 hw_dev_mcs_support;
	u8 adhoc_11n_enabled;
	u8 sec_chan_offset;
	struct mwifiex_dbg dbg;
	u8 arp_filter[ARP_FILTER_MAX_BUF_SIZE];
	u32 arp_filter_size;
	u16 cmd_wait_q_required;
	struct mwifiex_wait_queue cmd_wait_q;
	u8 scan_wait_q_woken;
	spinlock_t queue_lock;		/* lock for tx queues */
	struct completion fw_load;
	u8 country_code[IEEE80211_COUNTRY_STRING_LEN];
	u16 max_mgmt_ie_index;
	u8 scan_delay_cnt;
	u8 empty_tx_q_cnt;
	const struct firmware *cal_data;
	struct device_node *dt_node;

	/* 11AC */
	u32 is_hw_11ac_capable;
	u32 hw_dot_11ac_dev_cap;
	u32 hw_dot_11ac_mcs_support;
	u32 usr_dot_11ac_dev_cap_bg;
	u32 usr_dot_11ac_dev_cap_a;
	u32 usr_dot_11ac_mcs_support;

	atomic_t is_tx_received;
	atomic_t pending_bridged_pkts;
	struct semaphore *card_sem;
	bool ext_scan;
};

int mwifiex_init_lock_list(struct mwifiex_adapter *adapter);

void mwifiex_set_trans_start(struct net_device *dev);

void mwifiex_stop_net_dev_queue(struct net_device *netdev,
		struct mwifiex_adapter *adapter);

void mwifiex_wake_up_net_dev_queue(struct net_device *netdev,
		struct mwifiex_adapter *adapter);

int mwifiex_init_priv(struct mwifiex_private *priv);
void mwifiex_free_priv(struct mwifiex_private *priv);

int mwifiex_init_fw(struct mwifiex_adapter *adapter);

int mwifiex_init_fw_complete(struct mwifiex_adapter *adapter);

int mwifiex_shutdown_drv(struct mwifiex_adapter *adapter);

int mwifiex_shutdown_fw_complete(struct mwifiex_adapter *adapter);

int mwifiex_dnld_fw(struct mwifiex_adapter *, struct mwifiex_fw_image *);

int mwifiex_recv_packet(struct mwifiex_private *priv, struct sk_buff *skb);

int mwifiex_process_mgmt_packet(struct mwifiex_private *priv,
				struct sk_buff *skb);

int mwifiex_process_event(struct mwifiex_adapter *adapter);

int mwifiex_complete_cmd(struct mwifiex_adapter *adapter,
			 struct cmd_ctrl_node *cmd_node);

int mwifiex_send_cmd_async(struct mwifiex_private *priv, uint16_t cmd_no,
			   u16 cmd_action, u32 cmd_oid, void *data_buf);

int mwifiex_send_cmd_sync(struct mwifiex_private *priv, uint16_t cmd_no,
			  u16 cmd_action, u32 cmd_oid, void *data_buf);

void mwifiex_cmd_timeout_func(unsigned long function_context);

int mwifiex_get_debug_info(struct mwifiex_private *,
			   struct mwifiex_debug_info *);

int mwifiex_alloc_cmd_buffer(struct mwifiex_adapter *adapter);
int mwifiex_free_cmd_buffer(struct mwifiex_adapter *adapter);
void mwifiex_cancel_all_pending_cmd(struct mwifiex_adapter *adapter);
void mwifiex_cancel_pending_ioctl(struct mwifiex_adapter *adapter);

void mwifiex_insert_cmd_to_free_q(struct mwifiex_adapter *adapter,
				  struct cmd_ctrl_node *cmd_node);
void mwifiex_recycle_cmd_node(struct mwifiex_adapter *adapter,
			      struct cmd_ctrl_node *cmd_node);

void mwifiex_insert_cmd_to_pending_q(struct mwifiex_adapter *adapter,
				     struct cmd_ctrl_node *cmd_node,
				     u32 addtail);

int mwifiex_exec_next_cmd(struct mwifiex_adapter *adapter);
int mwifiex_process_cmdresp(struct mwifiex_adapter *adapter);
int mwifiex_handle_rx_packet(struct mwifiex_adapter *adapter,
			     struct sk_buff *skb);
int mwifiex_process_tx(struct mwifiex_private *priv, struct sk_buff *skb,
		       struct mwifiex_tx_param *tx_param);
int mwifiex_send_null_packet(struct mwifiex_private *priv, u8 flags);
int mwifiex_write_data_complete(struct mwifiex_adapter *adapter,
				struct sk_buff *skb, int aggr, int status);
void mwifiex_clean_txrx(struct mwifiex_private *priv);
u8 mwifiex_check_last_packet_indication(struct mwifiex_private *priv);
void mwifiex_check_ps_cond(struct mwifiex_adapter *adapter);
void mwifiex_process_sleep_confirm_resp(struct mwifiex_adapter *, u8 *,
					u32);
int mwifiex_cmd_enh_power_mode(struct mwifiex_private *priv,
			       struct host_cmd_ds_command *cmd,
			       u16 cmd_action, uint16_t ps_bitmap,
			       struct mwifiex_ds_auto_ds *auto_ds);
int mwifiex_ret_enh_power_mode(struct mwifiex_private *priv,
			       struct host_cmd_ds_command *resp,
			       struct mwifiex_ds_pm_cfg *pm_cfg);
void mwifiex_process_hs_config(struct mwifiex_adapter *adapter);
void mwifiex_hs_activated_event(struct mwifiex_private *priv,
					u8 activated);
int mwifiex_ret_802_11_hs_cfg(struct mwifiex_private *priv,
			      struct host_cmd_ds_command *resp);
int mwifiex_process_rx_packet(struct mwifiex_private *priv,
			      struct sk_buff *skb);
int mwifiex_sta_prepare_cmd(struct mwifiex_private *, uint16_t cmd_no,
			    u16 cmd_action, u32 cmd_oid,
			    void *data_buf, void *cmd_buf);
int mwifiex_uap_prepare_cmd(struct mwifiex_private *priv, uint16_t cmd_no,
			    u16 cmd_action, u32 cmd_oid,
			    void *data_buf, void *cmd_buf);
int mwifiex_process_sta_cmdresp(struct mwifiex_private *, u16 cmdresp_no,
				struct host_cmd_ds_command *resp);
int mwifiex_process_sta_rx_packet(struct mwifiex_private *,
				  struct sk_buff *skb);
int mwifiex_process_uap_rx_packet(struct mwifiex_private *priv,
				  struct sk_buff *skb);
int mwifiex_handle_uap_rx_forward(struct mwifiex_private *priv,
				  struct sk_buff *skb);
int mwifiex_process_sta_event(struct mwifiex_private *);
int mwifiex_process_uap_event(struct mwifiex_private *);
struct mwifiex_sta_node *
mwifiex_get_sta_entry(struct mwifiex_private *priv, u8 *mac);
void mwifiex_delete_all_station_list(struct mwifiex_private *priv);
void *mwifiex_process_sta_txpd(struct mwifiex_private *, struct sk_buff *skb);
void *mwifiex_process_uap_txpd(struct mwifiex_private *, struct sk_buff *skb);
int mwifiex_sta_init_cmd(struct mwifiex_private *, u8 first_sta);
int mwifiex_cmd_802_11_scan(struct host_cmd_ds_command *cmd,
			    struct mwifiex_scan_cmd_config *scan_cfg);
void mwifiex_queue_scan_cmd(struct mwifiex_private *priv,
			    struct cmd_ctrl_node *cmd_node);
int mwifiex_ret_802_11_scan(struct mwifiex_private *priv,
			    struct host_cmd_ds_command *resp);
s32 mwifiex_ssid_cmp(struct cfg80211_ssid *ssid1, struct cfg80211_ssid *ssid2);
int mwifiex_associate(struct mwifiex_private *priv,
		      struct mwifiex_bssdescriptor *bss_desc);
int mwifiex_cmd_802_11_associate(struct mwifiex_private *priv,
				 struct host_cmd_ds_command *cmd,
				 struct mwifiex_bssdescriptor *bss_desc);
int mwifiex_ret_802_11_associate(struct mwifiex_private *priv,
				 struct host_cmd_ds_command *resp);
void mwifiex_reset_connect_state(struct mwifiex_private *priv, u16 reason);
u8 mwifiex_band_to_radio_type(u8 band);
int mwifiex_deauthenticate(struct mwifiex_private *priv, u8 *mac);
int mwifiex_adhoc_start(struct mwifiex_private *priv,
			struct cfg80211_ssid *adhoc_ssid);
int mwifiex_adhoc_join(struct mwifiex_private *priv,
		       struct mwifiex_bssdescriptor *bss_desc);
int mwifiex_cmd_802_11_ad_hoc_start(struct mwifiex_private *priv,
				    struct host_cmd_ds_command *cmd,
				    struct cfg80211_ssid *req_ssid);
int mwifiex_cmd_802_11_ad_hoc_join(struct mwifiex_private *priv,
				   struct host_cmd_ds_command *cmd,
				   struct mwifiex_bssdescriptor *bss_desc);
int mwifiex_ret_802_11_ad_hoc(struct mwifiex_private *priv,
			      struct host_cmd_ds_command *resp);
int mwifiex_cmd_802_11_bg_scan_query(struct host_cmd_ds_command *cmd);
struct mwifiex_chan_freq_power *mwifiex_get_cfp(struct mwifiex_private *priv,
						u8 band, u16 channel, u32 freq);
u32 mwifiex_index_to_data_rate(struct mwifiex_private *priv,
			       u8 index, u8 ht_info);
u32 mwifiex_index_to_acs_data_rate(struct mwifiex_private *priv,
				   u8 index, u8 ht_info);
u32 mwifiex_find_freq_from_band_chan(u8, u8);
int mwifiex_cmd_append_vsie_tlv(struct mwifiex_private *priv, u16 vsie_mask,
				u8 **buffer);
u32 mwifiex_get_active_data_rates(struct mwifiex_private *priv,
				    u8 *rates);
u32 mwifiex_get_supported_rates(struct mwifiex_private *priv, u8 *rates);
u32 mwifiex_get_rates_from_cfg80211(struct mwifiex_private *priv,
				    u8 *rates, u8 radio_type);
u8 mwifiex_is_rate_auto(struct mwifiex_private *priv);
extern u16 region_code_index[MWIFIEX_MAX_REGION_CODE];
void mwifiex_save_curr_bcn(struct mwifiex_private *priv);
void mwifiex_free_curr_bcn(struct mwifiex_private *priv);
int mwifiex_cmd_get_hw_spec(struct mwifiex_private *priv,
			    struct host_cmd_ds_command *cmd);
int mwifiex_ret_get_hw_spec(struct mwifiex_private *priv,
			    struct host_cmd_ds_command *resp);
int is_command_pending(struct mwifiex_adapter *adapter);
void mwifiex_init_priv_params(struct mwifiex_private *priv,
						struct net_device *dev);
int mwifiex_set_secure_params(struct mwifiex_private *priv,
			      struct mwifiex_uap_bss_param *bss_config,
			      struct cfg80211_ap_settings *params);
void mwifiex_set_ht_params(struct mwifiex_private *priv,
			   struct mwifiex_uap_bss_param *bss_cfg,
			   struct cfg80211_ap_settings *params);
void mwifiex_set_vht_params(struct mwifiex_private *priv,
			    struct mwifiex_uap_bss_param *bss_cfg,
			    struct cfg80211_ap_settings *params);
void mwifiex_set_uap_rates(struct mwifiex_uap_bss_param *bss_cfg,
			   struct cfg80211_ap_settings *params);
void mwifiex_set_vht_width(struct mwifiex_private *priv,
			   enum nl80211_chan_width width,
			   bool ap_11ac_disable);
void
mwifiex_set_wmm_params(struct mwifiex_private *priv,
		       struct mwifiex_uap_bss_param *bss_cfg,
		       struct cfg80211_ap_settings *params);
void mwifiex_set_ba_params(struct mwifiex_private *priv);
void mwifiex_set_11ac_ba_params(struct mwifiex_private *priv);
int mwifiex_cmd_802_11_scan_ext(struct mwifiex_private *priv,
				struct host_cmd_ds_command *cmd,
				void *data_buf);
int mwifiex_ret_802_11_scan_ext(struct mwifiex_private *priv);
int mwifiex_handle_event_ext_scan_report(struct mwifiex_private *priv,
					 void *buf);

/*
 * This function checks if the queuing is RA based or not.
 */
static inline u8
mwifiex_queuing_ra_based(struct mwifiex_private *priv)
{
	/*
	 * Currently we assume if we are in Infra, then DA=RA. This might not be
	 * true in the future
	 */
	if ((priv->bss_mode == NL80211_IFTYPE_STATION) &&
	    (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA))
		return false;

	return true;
}

/*
 * This function copies rates.
 */
static inline u32
mwifiex_copy_rates(u8 *dest, u32 pos, u8 *src, int len)
{
	int i;

	for (i = 0; i < len && src[i]; i++, pos++) {
		if (pos >= MWIFIEX_SUPPORTED_RATES)
			break;
		dest[pos] = src[i];
	}

	return pos;
}

/*
 * This function returns the correct private structure pointer based
 * upon the BSS type and BSS number.
 */
static inline struct mwifiex_private *
mwifiex_get_priv_by_id(struct mwifiex_adapter *adapter,
		       u8 bss_num, u8 bss_type)
{
	int i;

	for (i = 0; i < adapter->priv_num; i++) {
		if (adapter->priv[i]) {
			if ((adapter->priv[i]->bss_num == bss_num) &&
			    (adapter->priv[i]->bss_type == bss_type))
				break;
		}
	}
	return ((i < adapter->priv_num) ? adapter->priv[i] : NULL);
}

/*
 * This function returns the first available private structure pointer
 * based upon the BSS role.
 */
static inline struct mwifiex_private *
mwifiex_get_priv(struct mwifiex_adapter *adapter,
		 enum mwifiex_bss_role bss_role)
{
	int i;

	for (i = 0; i < adapter->priv_num; i++) {
		if (adapter->priv[i]) {
			if (bss_role == MWIFIEX_BSS_ROLE_ANY ||
			    GET_BSS_ROLE(adapter->priv[i]) == bss_role)
				break;
		}
	}

	return ((i < adapter->priv_num) ? adapter->priv[i] : NULL);
}

/*
 * This function returns the driver private structure of a network device.
 */
static inline struct mwifiex_private *
mwifiex_netdev_get_priv(struct net_device *dev)
{
	return (struct mwifiex_private *) (*(unsigned long *) netdev_priv(dev));
}

/*
 * This function checks if a skb holds a management frame.
 */
static inline bool mwifiex_is_skb_mgmt_frame(struct sk_buff *skb)
{
	return (le32_to_cpu(*(__le32 *)skb->data) == PKT_TYPE_MGMT);
}

/* This function retrieves channel closed for operation by Channel
 * Switch Announcement.
 */
static inline u8
mwifiex_11h_get_csa_closed_channel(struct mwifiex_private *priv)
{
	if (!priv->csa_chan)
		return 0;

	/* Clear csa channel, if DFS channel move time has passed */
	if (jiffies > priv->csa_expire_time) {
		priv->csa_chan = 0;
		priv->csa_expire_time = 0;
	}

	return priv->csa_chan;
}

int mwifiex_init_shutdown_fw(struct mwifiex_private *priv,
			     u32 func_init_shutdown);
int mwifiex_add_card(void *, struct semaphore *, struct mwifiex_if_ops *, u8);
int mwifiex_remove_card(struct mwifiex_adapter *, struct semaphore *);

void mwifiex_get_version(struct mwifiex_adapter *adapter, char *version,
			 int maxlen);
int mwifiex_request_set_multicast_list(struct mwifiex_private *priv,
			struct mwifiex_multicast_list *mcast_list);
int mwifiex_copy_mcast_addr(struct mwifiex_multicast_list *mlist,
			    struct net_device *dev);
int mwifiex_wait_queue_complete(struct mwifiex_adapter *adapter,
				struct cmd_ctrl_node *cmd_queued);
int mwifiex_bss_start(struct mwifiex_private *priv, struct cfg80211_bss *bss,
		      struct cfg80211_ssid *req_ssid);
int mwifiex_cancel_hs(struct mwifiex_private *priv, int cmd_type);
int mwifiex_enable_hs(struct mwifiex_adapter *adapter);
int mwifiex_disable_auto_ds(struct mwifiex_private *priv);
int mwifiex_drv_get_data_rate(struct mwifiex_private *priv, u32 *rate);
int mwifiex_request_scan(struct mwifiex_private *priv,
			 struct cfg80211_ssid *req_ssid);
int mwifiex_scan_networks(struct mwifiex_private *priv,
			  const struct mwifiex_user_scan_cfg *user_scan_in);
int mwifiex_set_radio(struct mwifiex_private *priv, u8 option);

int mwifiex_set_encode(struct mwifiex_private *priv, struct key_params *kp,
		       const u8 *key, int key_len, u8 key_index,
		       const u8 *mac_addr, int disable);

int mwifiex_set_gen_ie(struct mwifiex_private *priv, const u8 *ie, int ie_len);

int mwifiex_get_ver_ext(struct mwifiex_private *priv);

int mwifiex_remain_on_chan_cfg(struct mwifiex_private *priv, u16 action,
			       struct ieee80211_channel *chan,
			       unsigned int duration);

int mwifiex_set_bss_role(struct mwifiex_private *priv, u8 bss_role);

int mwifiex_get_stats_info(struct mwifiex_private *priv,
			   struct mwifiex_ds_get_stats *log);

int mwifiex_reg_write(struct mwifiex_private *priv, u32 reg_type,
		      u32 reg_offset, u32 reg_value);

int mwifiex_reg_read(struct mwifiex_private *priv, u32 reg_type,
		     u32 reg_offset, u32 *value);

int mwifiex_eeprom_read(struct mwifiex_private *priv, u16 offset, u16 bytes,
			u8 *value);

int mwifiex_set_11n_httx_cfg(struct mwifiex_private *priv, int data);

int mwifiex_get_11n_httx_cfg(struct mwifiex_private *priv, int *data);

int mwifiex_set_tx_rate_cfg(struct mwifiex_private *priv, int tx_rate_index);

int mwifiex_get_tx_rate_cfg(struct mwifiex_private *priv, int *tx_rate_index);

int mwifiex_drv_set_power(struct mwifiex_private *priv, u32 *ps_mode);

int mwifiex_drv_get_driver_version(struct mwifiex_adapter *adapter,
				   char *version, int max_len);

int mwifiex_set_tx_power(struct mwifiex_private *priv,
			 struct mwifiex_power_cfg *power_cfg);

int mwifiex_main_process(struct mwifiex_adapter *);

int mwifiex_queue_tx_pkt(struct mwifiex_private *priv, struct sk_buff *skb);

int mwifiex_get_bss_info(struct mwifiex_private *,
			 struct mwifiex_bss_info *);
int mwifiex_fill_new_bss_desc(struct mwifiex_private *priv,
			      struct cfg80211_bss *bss,
			      struct mwifiex_bssdescriptor *bss_desc);
int mwifiex_update_bss_desc_with_ie(struct mwifiex_adapter *adapter,
				    struct mwifiex_bssdescriptor *bss_entry);
int mwifiex_check_network_compatibility(struct mwifiex_private *priv,
					struct mwifiex_bssdescriptor *bss_desc);

u8 mwifiex_chan_type_to_sec_chan_offset(enum nl80211_channel_type chan_type);

struct wireless_dev *mwifiex_add_virtual_intf(struct wiphy *wiphy,
					      const char *name,
					      enum nl80211_iftype type,
					      u32 *flags,
					      struct vif_params *params);
int mwifiex_del_virtual_intf(struct wiphy *wiphy, struct wireless_dev *wdev);

void mwifiex_set_sys_config_invalid_data(struct mwifiex_uap_bss_param *config);

int mwifiex_add_wowlan_magic_pkt_filter(struct mwifiex_adapter *adapter);

int mwifiex_set_mgmt_ies(struct mwifiex_private *priv,
			 struct cfg80211_beacon_data *data);
int mwifiex_del_mgmt_ies(struct mwifiex_private *priv);
u8 *mwifiex_11d_code_2_region(u8 code);
void mwifiex_uap_del_sta_data(struct mwifiex_private *priv,
			      struct mwifiex_sta_node *node);

void mwifiex_11h_process_join(struct mwifiex_private *priv, u8 **buffer,
			      struct mwifiex_bssdescriptor *bss_desc);
int mwifiex_11h_handle_event_chanswann(struct mwifiex_private *priv);
int mwifiex_dnld_dt_cfgdata(struct mwifiex_private *priv,
			    struct device_node *node, const char *prefix);
void mwifiex_dnld_txpwr_table(struct mwifiex_private *priv);

extern const struct ethtool_ops mwifiex_ethtool_ops;

void mwifiex_del_all_sta_list(struct mwifiex_private *priv);
void mwifiex_del_sta_entry(struct mwifiex_private *priv, u8 *mac);
void
mwifiex_set_sta_ht_cap(struct mwifiex_private *priv, const u8 *ies,
		       int ies_len, struct mwifiex_sta_node *node);
struct mwifiex_sta_node *
mwifiex_add_sta_entry(struct mwifiex_private *priv, u8 *mac);
struct mwifiex_sta_node *
mwifiex_get_sta_entry(struct mwifiex_private *priv, u8 *mac);
int mwifiex_send_tdls_data_frame(struct mwifiex_private *priv, u8 *peer,
				 u8 action_code, u8 dialog_token,
				 u16 status_code, const u8 *extra_ies,
				 size_t extra_ies_len);
int mwifiex_send_tdls_action_frame(struct mwifiex_private *priv,
				 u8 *peer, u8 action_code, u8 dialog_token,
				 u16 status_code, const u8 *extra_ies,
				 size_t extra_ies_len);
void mwifiex_process_tdls_action_frame(struct mwifiex_private *priv,
				       u8 *buf, int len);
int mwifiex_tdls_oper(struct mwifiex_private *priv, u8 *peer, u8 action);

#ifdef CONFIG_DEBUG_FS
void mwifiex_debugfs_init(void);
void mwifiex_debugfs_remove(void);

void mwifiex_dev_debugfs_init(struct mwifiex_private *priv);
void mwifiex_dev_debugfs_remove(struct mwifiex_private *priv);
#endif
#endif /* !_MWIFIEX_MAIN_H_ */