text: /*
   * Driver interface definition
   * Copyright (c) 2003-2017, Jouni Malinen <j@w1.fi>
   *
   * This software may be distributed under the terms of the BSD license.
   * See README for more details.
   *
   * This file defines a driver interface used by both %wpa_supplicant and
   * hostapd. The first part of the file defines data structures used in various
   * driver operations. This is followed by the struct wpa_driver_ops that each
   * driver wrapper will beed to define with callback functions for requesting
   * driver operations. After this, there are definitions for driver event
   * reporting with wpa_supplicant_event() and some convenience helper functions
   * that can be used to report events.
   */
  
  #ifndef DRIVER_H
  #define DRIVER_H
  
  #define WPA_SUPPLICANT_DRIVER_VERSION 4
  
  #include "common/defs.h"
  #include "common/ieee802_11_defs.h"
  #include "common/wpa_common.h"
  #ifdef CONFIG_MACSEC
  #include "pae/ieee802_1x_kay.h"
  #endif /* CONFIG_MACSEC */
  #include "utils/list.h"
  
  #define HOSTAPD_CHAN_DISABLED 0x00000001
  #define HOSTAPD_CHAN_NO_IR 0x00000002
  #define HOSTAPD_CHAN_RADAR 0x00000008
  #define HOSTAPD_CHAN_HT40PLUS 0x00000010
  #define HOSTAPD_CHAN_HT40MINUS 0x00000020
  #define HOSTAPD_CHAN_HT40 0x00000040
  #define HOSTAPD_CHAN_SURVEY_LIST_INITIALIZED 0x00000080
  
  #define HOSTAPD_CHAN_DFS_UNKNOWN 0x00000000
  #define HOSTAPD_CHAN_DFS_USABLE 0x00000100
  #define HOSTAPD_CHAN_DFS_UNAVAILABLE 0x00000200
  #define HOSTAPD_CHAN_DFS_AVAILABLE 0x00000300
  #define HOSTAPD_CHAN_DFS_MASK 0x00000300
  
  #define HOSTAPD_CHAN_VHT_10_70 0x00000800
  #define HOSTAPD_CHAN_VHT_30_50 0x00001000
  #define HOSTAPD_CHAN_VHT_50_30 0x00002000
  #define HOSTAPD_CHAN_VHT_70_10 0x00004000
  
  #define HOSTAPD_CHAN_INDOOR_ONLY 0x00010000
  #define HOSTAPD_CHAN_GO_CONCURRENT 0x00020000
  
  #define HOSTAPD_CHAN_VHT_10_150 0x00100000
  #define HOSTAPD_CHAN_VHT_30_130 0x00200000
  #define HOSTAPD_CHAN_VHT_50_110 0x00400000
  #define HOSTAPD_CHAN_VHT_70_90  0x00800000
  #define HOSTAPD_CHAN_VHT_90_70  0x01000000
  #define HOSTAPD_CHAN_VHT_110_50 0x02000000
  #define HOSTAPD_CHAN_VHT_130_30 0x04000000
  #define HOSTAPD_CHAN_VHT_150_10 0x08000000
  
  /* Allowed bandwidth mask */
  enum hostapd_chan_width_attr {
  	HOSTAPD_CHAN_WIDTH_10   = BIT(0),
  	HOSTAPD_CHAN_WIDTH_20   = BIT(1),
  	HOSTAPD_CHAN_WIDTH_40P  = BIT(2),
  	HOSTAPD_CHAN_WIDTH_40M  = BIT(3),
  	HOSTAPD_CHAN_WIDTH_80   = BIT(4),
  	HOSTAPD_CHAN_WIDTH_160  = BIT(5),
  };
  
  /* Filter gratuitous ARP */
  #define WPA_DATA_FRAME_FILTER_FLAG_ARP BIT(0)
  /* Filter unsolicited Neighbor Advertisement */
  #define WPA_DATA_FRAME_FILTER_FLAG_NA BIT(1)
  /* Filter unicast IP packets encrypted using the GTK */
  #define WPA_DATA_FRAME_FILTER_FLAG_GTK BIT(2)
  
  #define HOSTAPD_DFS_REGION_FCC	1
  #define HOSTAPD_DFS_REGION_ETSI	2
  #define HOSTAPD_DFS_REGION_JP	3
  
  /**
   * enum reg_change_initiator - Regulatory change initiator
   */
  enum reg_change_initiator {
  	REGDOM_SET_BY_CORE,
  	REGDOM_SET_BY_USER,
  	REGDOM_SET_BY_DRIVER,
  	REGDOM_SET_BY_COUNTRY_IE,
  	REGDOM_BEACON_HINT,
  };
  
  /**
   * enum reg_type - Regulatory change types
   */
  enum reg_type {
  	REGDOM_TYPE_UNKNOWN,
  	REGDOM_TYPE_COUNTRY,
  	REGDOM_TYPE_WORLD,
  	REGDOM_TYPE_CUSTOM_WORLD,
  	REGDOM_TYPE_INTERSECTION,
  };
  
  /**
   * struct hostapd_wmm_rule - WMM regulatory rule
   * @min_cwmin: Lower bound of CW_min value
   * @min_cwmax: Lower bound of CW_max value
   * @min_aifs: Lower bound of AIFS value
   * @max_txop: Upper bound of TXOP, value in units of 32 usec
   */
  struct hostapd_wmm_rule {
  	int min_cwmin;
  	int min_cwmax;
  	int min_aifs;
  	int max_txop;
  };
  
  /**
   * struct hostapd_channel_data - Channel information
   */
  struct hostapd_channel_data {
  	/**
  	 * chan - Channel number (IEEE 802.11)
  	 */
  	short chan;
  
  	/**
  	 * freq - Frequency in MHz
  	 */
  	int freq;
  
  	/**
  	 * flag - Channel flags (HOSTAPD_CHAN_*)
  	 */
  	int flag;
  
  	/**
  	 * allowed_bw - Allowed channel width bitmask
  	 *
  	 * See enum hostapd_chan_width_attr.
  	 */
  	u32 allowed_bw;
  
  	/**
  	 * max_tx_power - Regulatory transmit power limit in dBm
  	 */
  	u8 max_tx_power;
  
  	/**
  	 * survey_list - Linked list of surveys (struct freq_survey)
  	 */
  	struct dl_list survey_list;
  
  	/**
  	 * min_nf - Minimum observed noise floor, in dBm, based on all
  	 * surveyed channel data
  	 */
  	s8 min_nf;
  
  #ifdef CONFIG_ACS
  	/**
  	 * interference_factor - Computed interference factor on this
  	 * channel (used internally in src/ap/acs.c; driver wrappers do not
  	 * need to set this)
  	 */
  	long double interference_factor;
  #endif /* CONFIG_ACS */
  
  	/**
  	 * dfs_cac_ms - DFS CAC time in milliseconds
  	 */
  	unsigned int dfs_cac_ms;
  
  	/**
  	 * wmm_rules_valid - Indicates wmm_rules state
  	 */
  	int wmm_rules_valid;
  
  	/**
  	 * wmm_rules - WMM regulatory rules
  	 */
  	struct hostapd_wmm_rule wmm_rules[WMM_AC_NUM];
  };
  
  #define HE_MAC_CAPAB_0		0
  #define HE_MAX_MAC_CAPAB_SIZE	6
  #define HE_MAX_PHY_CAPAB_SIZE	11
  #define HE_MAX_MCS_CAPAB_SIZE	12
  #define HE_MAX_PPET_CAPAB_SIZE	25
  
  /**
   * struct he_capabilities - IEEE 802.11ax HE capabilities
   */
  struct he_capabilities {
  	u8 he_supported;
  	u8 phy_cap[HE_MAX_PHY_CAPAB_SIZE];
  	u8 mac_cap[HE_MAX_MAC_CAPAB_SIZE];
  	u8 mcs[HE_MAX_MCS_CAPAB_SIZE];
  	u8 ppet[HE_MAX_PPET_CAPAB_SIZE];
  };
  
  #define HOSTAPD_MODE_FLAG_HT_INFO_KNOWN BIT(0)
  #define HOSTAPD_MODE_FLAG_VHT_INFO_KNOWN BIT(1)
  
  
  enum ieee80211_op_mode {
  	IEEE80211_MODE_INFRA = 0,
  	IEEE80211_MODE_IBSS = 1,
  	IEEE80211_MODE_AP = 2,
  	IEEE80211_MODE_MESH = 5,
  
  	/* only add new entries before IEEE80211_MODE_NUM */
  	IEEE80211_MODE_NUM
  };
  
  /**
   * struct ieee80211_edmg_config - EDMG configuration
   *
   * This structure describes most essential parameters needed
   * for IEEE 802.11ay EDMG configuration
   *
   * @channels: Bitmap that indicates the 2.16 GHz channel(s)
   *	that are allowed to be used for transmissions.
   *	Bit 0 indicates channel 1, bit 1 indicates channel 2, etc.
   *	Set to 0 to indicate EDMG not supported.
   * @bw_config: Channel BW Configuration subfield encodes
   *	the allowed channel bandwidth configurations
   */
  struct ieee80211_edmg_config {
  	u8 channels;
  	enum edmg_bw_config bw_config;
  };
  
  /**
   * struct hostapd_hw_modes - Supported hardware mode information
   */
  struct hostapd_hw_modes {
  	/**
  	 * mode - Hardware mode
  	 */
  	enum hostapd_hw_mode mode;
  
  	/**
  	 * num_channels - Number of entries in the channels array
  	 */
  	int num_channels;
  
  	/**
  	 * channels - Array of supported channels
  	 */
  	struct hostapd_channel_data *channels;
  
  	/**
  	 * num_rates - Number of entries in the rates array
  	 */
  	int num_rates;
  
  	/**
  	 * rates - Array of supported rates in 100 kbps units
  	 */
  	int *rates;
  
  	/**
  	 * ht_capab - HT (IEEE 802.11n) capabilities
  	 */
  	u16 ht_capab;
  
  	/**
  	 * conf_tx_ant - Configured TX Antenna mask
  	 * 0 means not reported by driver.
  	 */
  	u32 conf_tx_ant;
  
  	/**
  	 * conf_rx_ant - Configured RX Antenna mask
  	 * 0 means not reported by driver
  	 */
  	u32 conf_rx_ant;
  
  	/**
  	 * mcs_set - MCS (IEEE 802.11n) rate parameters
  	 */
  	u8 mcs_set[16];
  
  	/**
  	 * a_mpdu_params - A-MPDU (IEEE 802.11n) parameters
  	 */
  	u8 a_mpdu_params;
  
  	/**
  	 * vht_capab - VHT (IEEE 802.11ac) capabilities
  	 */
  	u32 vht_capab;
  
  	/**
  	 * vht_mcs_set - VHT MCS (IEEE 802.11ac) rate parameters
  	 */
  	u8 vht_mcs_set[8];
  
  	unsigned int flags; /* HOSTAPD_MODE_FLAG_* */
  
  	/**
  	 * he_capab - HE (IEEE 802.11ax) capabilities
  	 */
  	struct he_capabilities he_capab[IEEE80211_MODE_NUM];
  
  	/**
  	 * This structure describes the most essential parameters needed
  	 * for IEEE 802.11ay EDMG configuration.
  	 */
  	struct ieee80211_edmg_config edmg;
  };
  
  
  #define IEEE80211_CAP_ESS	0x0001
  #define IEEE80211_CAP_IBSS	0x0002
  #define IEEE80211_CAP_PRIVACY	0x0010
  #define IEEE80211_CAP_RRM	0x1000
  
  /* DMG (60 GHz) IEEE 802.11ad */
  /* type - bits 0..1 */
  #define IEEE80211_CAP_DMG_MASK	0x0003
  #define IEEE80211_CAP_DMG_IBSS	0x0001 /* Tx by: STA */
  #define IEEE80211_CAP_DMG_PBSS	0x0002 /* Tx by: PCP */
  #define IEEE80211_CAP_DMG_AP	0x0003 /* Tx by: AP */
  
  #define WPA_SCAN_QUAL_INVALID		BIT(0)
  #define WPA_SCAN_NOISE_INVALID		BIT(1)
  #define WPA_SCAN_LEVEL_INVALID		BIT(2)
  #define WPA_SCAN_LEVEL_DBM		BIT(3)
  #define WPA_SCAN_ASSOCIATED		BIT(5)
  
  /**
   * struct wpa_scan_res - Scan result for an BSS/IBSS
   * @flags: information flags about the BSS/IBSS (WPA_SCAN_*)
   * @bssid: BSSID
   * @freq: frequency of the channel in MHz (e.g., 2412 = channel 1)
   * @beacon_int: beacon interval in TUs (host byte order)
   * @caps: capability information field in host byte order
   * @qual: signal quality
   * @noise: noise level
   * @level: signal level
   * @tsf: Timestamp
   * @age: Age of the information in milliseconds (i.e., how many milliseconds
   * ago the last Beacon or Probe Response frame was received)
   * @est_throughput: Estimated throughput in kbps (this is calculated during
   * scan result processing if left zero by the driver wrapper)
   * @snr: Signal-to-noise ratio in dB (calculated during scan result processing)
   * @parent_tsf: Time when the Beacon/Probe Response frame was received in terms
   * of TSF of the BSS specified by %tsf_bssid.
   * @tsf_bssid: The BSS that %parent_tsf TSF time refers to.
   * @ie_len: length of the following IE field in octets
   * @beacon_ie_len: length of the following Beacon IE field in octets
   *
   * This structure is used as a generic format for scan results from the
   * driver. Each driver interface implementation is responsible for converting
   * the driver or OS specific scan results into this format.
   *
   * If the driver does not support reporting all IEs, the IE data structure is
   * constructed of the IEs that are available. This field will also need to
   * include SSID in IE format. All drivers are encouraged to be extended to
   * report all IEs to make it easier to support future additions.
   *
   * This structure data is followed by ie_len octets of IEs from Probe Response
   * frame (or if the driver does not indicate source of IEs, these may also be
   * from Beacon frame). After the first set of IEs, another set of IEs may follow
   * (with beacon_ie_len octets of data) if the driver provides both IE sets.
   */
  struct wpa_scan_res {
  	unsigned int flags;
  	u8 bssid[ETH_ALEN];
  	int freq;
  	u16 beacon_int;
  	u16 caps;
  	int qual;
  	int noise;
  	int level;
  	u64 tsf;
  	unsigned int age;
  	unsigned int est_throughput;
  	int snr;
  	u64 parent_tsf;
  	u8 tsf_bssid[ETH_ALEN];
  	size_t ie_len;
  	size_t beacon_ie_len;
  	/* Followed by ie_len + beacon_ie_len octets of IE data */
  };
  
  /**
   * struct wpa_scan_results - Scan results
   * @res: Array of pointers to allocated variable length scan result entries
   * @num: Number of entries in the scan result array
   * @fetch_time: Time when the results were fetched from the driver
   */
  struct wpa_scan_results {
  	struct wpa_scan_res **res;
  	size_t num;
  	struct os_reltime fetch_time;
  };
  
  /**
   * struct wpa_interface_info - Network interface information
   * @next: Pointer to the next interface or NULL if this is the last one
   * @ifname: Interface name that can be used with init() or init2()
   * @desc: Human readable adapter description (e.g., vendor/model) or NULL if
   *	not available
   * @drv_name: struct wpa_driver_ops::name (note: unlike other strings, this one
   *	is not an allocated copy, i.e., get_interfaces() caller will not free
   *	this)
   */
  struct wpa_interface_info {
  	struct wpa_interface_info *next;
  	char *ifname;
  	char *desc;
  	const char *drv_name;
  };
  
  #define WPAS_MAX_SCAN_SSIDS 16
  
  /**
   * struct wpa_driver_scan_ssid - SSIDs to scan for
   * @ssid - specific SSID to scan for (ProbeReq)
   *	%NULL or zero-length SSID is used to indicate active scan
   *	with wildcard SSID.
   * @ssid_len - Length of the SSID in octets
   */
  struct wpa_driver_scan_ssid {
  	const u8 *ssid;
  	size_t ssid_len;
  };
  
  /**
   * struct wpa_driver_scan_params - Scan parameters
   * Data for struct wpa_driver_ops::scan2().
   */
  struct wpa_driver_scan_params {
  	/**
  	 * ssids - SSIDs to scan for
  	 */
  	struct wpa_driver_scan_ssid ssids[WPAS_MAX_SCAN_SSIDS];
  
  	/**
  	 * num_ssids - Number of entries in ssids array
  	 * Zero indicates a request for a passive scan.
  	 */
  	size_t num_ssids;
  
  	/**
  	 * extra_ies - Extra IE(s) to add into Probe Request or %NULL
  	 */
  	const u8 *extra_ies;
  
  	/**
  	 * extra_ies_len - Length of extra_ies in octets
  	 */
  	size_t extra_ies_len;
  
  	/**
  	 * freqs - Array of frequencies to scan or %NULL for all frequencies
  	 *
  	 * The frequency is set in MHz. The array is zero-terminated.
  	 */
  	int *freqs;
  
  	/**
  	 * filter_ssids - Filter for reporting SSIDs
  	 *
  	 * This optional parameter can be used to request the driver wrapper to
  	 * filter scan results to include only the specified SSIDs. %NULL
  	 * indicates that no filtering is to be done. This can be used to
  	 * reduce memory needs for scan results in environments that have large
  	 * number of APs with different SSIDs.
  	 *
  	 * The driver wrapper is allowed to take this allocated buffer into its
  	 * own use by setting the pointer to %NULL. In that case, the driver
  	 * wrapper is responsible for freeing the buffer with os_free() once it
  	 * is not needed anymore.
  	 */
  	struct wpa_driver_scan_filter {
  		u8 ssid[SSID_MAX_LEN];
  		size_t ssid_len;
  	} *filter_ssids;
  
  	/**
  	 * num_filter_ssids - Number of entries in filter_ssids array
  	 */
  	size_t num_filter_ssids;
  
  	/**
  	 * filter_rssi - Filter by RSSI
  	 *
  	 * The driver may filter scan results in firmware to reduce host
  	 * wakeups and thereby save power. Specify the RSSI threshold in s32
  	 * dBm.
  	 */
  	s32 filter_rssi;
  
  	/**
  	 * p2p_probe - Used to disable CCK (802.11b) rates for P2P probes
  	 *
  	 * When set, the driver is expected to remove rates 1, 2, 5.5, and 11
  	 * Mbps from the support rates element(s) in the Probe Request frames
  	 * and not to transmit the frames at any of those rates.
  	 */
  	unsigned int p2p_probe:1;
  
  	/**
  	 * only_new_results - Request driver to report only new results
  	 *
  	 * This is used to request the driver to report only BSSes that have
  	 * been detected after this scan request has been started, i.e., to
  	 * flush old cached BSS entries.
  	 */
  	unsigned int only_new_results:1;
  
  	/**
  	 * low_priority - Requests driver to use a lower scan priority
  	 *
  	 * This is used to request the driver to use a lower scan priority
  	 * if it supports such a thing.
  	 */
  	unsigned int low_priority:1;
  
  	/**
  	 * mac_addr_rand - Requests driver to randomize MAC address
  	 */
  	unsigned int mac_addr_rand:1;
  
  	/**
  	 * mac_addr - MAC address used with randomization. The address cannot be
  	 * a multicast one, i.e., bit 0 of byte 0 should not be set.
  	 */
  	u8 *mac_addr;
  
  	/**
  	 * mac_addr_mask - MAC address mask used with randomization.
  	 *
  	 * Bits that are 0 in the mask should be randomized. Bits that are 1 in
  	 * the mask should be taken as is from mac_addr. The mask should not
  	 * allow the generation of a multicast address, i.e., bit 0 of byte 0
  	 * must be set.
  	 */
  	const u8 *mac_addr_mask;
  
  	/**
  	 * sched_scan_plans - Scan plans for scheduled scan
  	 *
  	 * Each scan plan consists of the number of iterations to scan and the
  	 * interval between scans. When a scan plan finishes (i.e., it was run
  	 * for the specified number of iterations), the next scan plan is
  	 * executed. The scan plans are executed in the order they appear in
  	 * the array (lower index first). The last scan plan will run infinitely
  	 * (until requested to stop), thus must not specify the number of
  	 * iterations. All other scan plans must specify the number of
  	 * iterations.
  	 */
  	struct sched_scan_plan {
  		 u32 interval; /* In seconds */
  		 u32 iterations; /* Zero to run infinitely */
  	 } *sched_scan_plans;
  
  	/**
  	 * sched_scan_plans_num - Number of scan plans in sched_scan_plans array
  	 */
  	 unsigned int sched_scan_plans_num;
  
  	/**
  	 * sched_scan_start_delay - Delay to use before starting the first scan
  	 *
  	 * Delay (in seconds) before scheduling first scan plan cycle. The
  	 * driver may ignore this parameter and start immediately (or at any
  	 * other time), if this feature is not supported.
  	 */
  	 u32 sched_scan_start_delay;
  
  	/**
  	 * bssid - Specific BSSID to scan for
  	 *
  	 * This optional parameter can be used to replace the default wildcard
  	 * BSSID with a specific BSSID to scan for if results are needed from
  	 * only a single BSS.
  	 */
  	const u8 *bssid;
  
  	/**
  	 * scan_cookie - Unique identification representing the scan request
  	 *
  	 * This scan_cookie carries a unique identification representing the
  	 * scan request if the host driver/kernel supports concurrent scan
  	 * requests. This cookie is returned from the corresponding driver
  	 * interface.
  	 *
  	 * Note: Unlike other parameters in this structure, scan_cookie is used
  	 * only to return information instead of setting parameters for the
  	 * scan.
  	 */
  	u64 scan_cookie;
  
  	 /**
  	  * duration - Dwell time on each channel
  	  *
  	  * This optional parameter can be used to set the dwell time on each
  	  * channel. In TUs.
  	  */
  	 u16 duration;
  
  	 /**
  	  * duration_mandatory - Whether the specified duration is mandatory
  	  *
  	  * If this is set, the duration specified by the %duration field is
  	  * mandatory (and the driver should reject the scan request if it is
  	  * unable to comply with the specified duration), otherwise it is the
  	  * maximum duration and the actual duration may be shorter.
  	  */
  	 unsigned int duration_mandatory:1;
  	/**
  	 * scan_width - Specify scan bandwidth.
  	 *
  	 * Specify a bandwidth at which to scan (5, 10, 20).  Zero means default.
  	 */
  	int scan_width;
  
  	/**
  	 * relative_rssi_set - Whether relative RSSI parameters are set
  	 */
  	unsigned int relative_rssi_set:1;
  
  	/**
  	 * relative_rssi - Relative RSSI for reporting better BSSs
  	 *
  	 * Amount of RSSI by which a BSS should be better than the current
  	 * connected BSS to report the new BSS to user space.
  	 */
  	s8 relative_rssi;
  
  	/**
  	 * relative_adjust_band - Band to which RSSI should be adjusted
  	 *
  	 * The relative_adjust_rssi should be added to the band specified
  	 * by relative_adjust_band.
  	 */
  	enum set_band relative_adjust_band;
  
  	/**
  	 * relative_adjust_rssi - RSSI to be added to relative_adjust_band
  	 *
  	 * An amount of relative_band_rssi should be added to the BSSs that
  	 * belong to the band specified by relative_adjust_band while comparing
  	 * with other bands for BSS reporting.
  	 */
  	s8 relative_adjust_rssi;
  
  	/**
  	 * oce_scan
  	 *
  	 * Enable the following OCE scan features: (WFA OCE TechSpec v1.0)
  	 * - Accept broadcast Probe Response frame.
  	 * - Probe Request frame deferral and suppression.
  	 * - Max Channel Time - driver fills FILS request params IE with
  	 *   Maximum Channel Time.
  	 * - Send 1st Probe Request frame in rate of minimum 5.5 Mbps.
  	 */
  	unsigned int oce_scan:1;
  
  	/*
  	 * NOTE: Whenever adding new parameters here, please make sure
  	 * wpa_scan_clone_params() and wpa_scan_free_params() get updated with
  	 * matching changes.
  	 */
  };
  
  /**
   * struct wpa_driver_auth_params - Authentication parameters
   * Data for struct wpa_driver_ops::authenticate().
   */
  struct wpa_driver_auth_params {
  	int freq;
  	const u8 *bssid;
  	const u8 *ssid;
  	size_t ssid_len;
  	int auth_alg;
  	const u8 *ie;
  	size_t ie_len;
  	const u8 *wep_key[4];
  	size_t wep_key_len[4];
  	int wep_tx_keyidx;
  	int local_state_change;
  
  	/**
  	 * p2p - Whether this connection is a P2P group
  	 */
  	int p2p;
  
  	/**
  	 * auth_data - Additional elements for Authentication frame
  	 *
  	 * This buffer starts with the Authentication transaction sequence
  	 * number field. If no special handling of such elements is needed, this
  	 * pointer is %NULL. This is used with SAE and FILS.
  	 */
  	const u8 *auth_data;
  
  	/**
  	 * auth_data_len - Length of auth_data buffer in octets
  	 */
  	size_t auth_data_len;
  };
  
  /**
   * enum wps_mode - WPS mode
   */
  enum wps_mode {
  	/**
  	 * WPS_MODE_NONE - No WPS provisioning being used
  	 */
  	WPS_MODE_NONE,
  
  	/**
  	 * WPS_MODE_OPEN - WPS provisioning with AP that is in open mode
  	 */
  	WPS_MODE_OPEN,
  
  	/**
  	 * WPS_MODE_PRIVACY - WPS provisioning with AP that is using protection
  	 */
  	WPS_MODE_PRIVACY
  };
  
  /**
   * struct hostapd_freq_params - Channel parameters
   */
  struct hostapd_freq_params {
  	/**
  	 * mode - Mode/band (HOSTAPD_MODE_IEEE80211A, ..)
  	 */
  	enum hostapd_hw_mode mode;
  
  	/**
  	 * freq - Primary channel center frequency in MHz
  	 */
  	int freq;
  
  	/**
  	 * channel - Channel number
  	 */
  	int channel;
  
  	/**
  	 * ht_enabled - Whether HT is enabled
  	 */
  	int ht_enabled;
  
  	/**
  	 * sec_channel_offset - Secondary channel offset for HT40
  	 *
  	 * 0 = HT40 disabled,
  	 * -1 = HT40 enabled, secondary channel below primary,
  	 * 1 = HT40 enabled, secondary channel above primary
  	 */
  	int sec_channel_offset;
  
  	/**
  	 * vht_enabled - Whether VHT is enabled
  	 */
  	int vht_enabled;
  
  	/**
  	 * he_enabled - Whether HE is enabled
  	 */
  	int he_enabled;
  
  	/**
  	 * center_freq1 - Segment 0 center frequency in MHz
  	 *
  	 * Valid for both HT and VHT.
  	 */
  	int center_freq1;
  
  	/**
  	 * center_freq2 - Segment 1 center frequency in MHz
  	 *
  	 * Non-zero only for bandwidth 80 and an 80+80 channel
  	 */
  	int center_freq2;
  
  	/**
  	 * bandwidth - Channel bandwidth in MHz (20, 40, 80, 160)
  	 */
  	int bandwidth;
  
  	/**
  	 * This structure describes the most essential parameters needed
  	 * for IEEE 802.11ay EDMG configuration.
  	 */
  	struct ieee80211_edmg_config edmg;
  };
  
  /**
   * struct wpa_driver_sta_auth_params - Authentication parameters
   * Data for struct wpa_driver_ops::sta_auth().
   */
  struct wpa_driver_sta_auth_params {
  
  	/**
  	 * own_addr - Source address and BSSID for authentication frame
  	 */
  	const u8 *own_addr;
  
  	/**
  	 * addr - MAC address of the station to associate
  	 */
  	const u8 *addr;
  
  	/**
  	 * seq - authentication sequence number
  	 */
  	u16 seq;
  
  	/**
  	 * status - authentication response status code
  	 */
  	u16 status;
  
  	/**
  	 * ie - authentication frame ie buffer
  	 */
  	const u8 *ie;
  
  	/**
  	 * len - ie buffer length
  	 */
  	size_t len;
  
  	/**
  	 * fils_auth - Indicates whether FILS authentication is being performed
  	 */
  	int fils_auth;
  
  	/**
  	 * fils_anonce - ANonce (required for FILS)
  	 */
  	u8 fils_anonce[WPA_NONCE_LEN];
  
  	/**
  	 * fils_snonce - SNonce (required for FILS)
  	*/
  	u8 fils_snonce[WPA_NONCE_LEN];
  
  	/**
  	 * fils_kek - key for encryption (required for FILS)
  	 */
  	u8 fils_kek[WPA_KEK_MAX_LEN];
  
  	/**
  	 * fils_kek_len - Length of the fils_kek in octets (required for FILS)
  	 */
  	size_t fils_kek_len;
  };
  
  /**
   * struct wpa_driver_associate_params - Association parameters
   * Data for struct wpa_driver_ops::associate().
   */
  struct wpa_driver_associate_params {
  	/**
  	 * bssid - BSSID of the selected AP
  	 * This can be %NULL, if ap_scan=2 mode is used and the driver is
  	 * responsible for selecting with which BSS to associate. */
  	const u8 *bssid;
  
  	/**
  	 * bssid_hint - BSSID of a proposed AP
  	 *
  	 * This indicates which BSS has been found a suitable candidate for
  	 * initial association for drivers that use driver/firmwate-based BSS
  	 * selection. Unlike the @bssid parameter, @bssid_hint does not limit
  	 * the driver from selecting other BSSes in the ESS.
  	 */
  	const u8 *bssid_hint;
  
  	/**
  	 * ssid - The selected SSID
  	 */
  	const u8 *ssid;
  
  	/**
  	 * ssid_len - Length of the SSID (1..32)
  	 */
  	size_t ssid_len;
  
  	/**
  	 * freq - channel parameters
  	 */
  	struct hostapd_freq_params freq;
  
  	/**
  	 * freq_hint - Frequency of the channel the proposed AP is using
  	 *
  	 * This provides a channel on which a suitable BSS has been found as a
  	 * hint for the driver. Unlike the @freq parameter, @freq_hint does not
  	 * limit the driver from selecting other channels for
  	 * driver/firmware-based BSS selection.
  	 */
  	int freq_hint;
  
  	/**
  	 * bg_scan_period - Background scan period in seconds, 0 to disable
  	 * background scan, or -1 to indicate no change to default driver
  	 * configuration
  	 */
  	int bg_scan_period;
  
  	/**
  	 * beacon_int - Beacon interval for IBSS or 0 to use driver default
  	 */
  	int beacon_int;
  
  	/**
  	 * wpa_ie - WPA information element for (Re)Association Request
  	 * WPA information element to be included in (Re)Association
  	 * Request (including information element id and length). Use
  	 * of this WPA IE is optional. If the driver generates the WPA
  	 * IE, it can use pairwise_suite, group_suite, group_mgmt_suite, and
  	 * key_mgmt_suite to select proper algorithms. In this case,
  	 * the driver has to notify wpa_supplicant about the used WPA
  	 * IE by generating an event that the interface code will
  	 * convert into EVENT_ASSOCINFO data (see below).
  	 *
  	 * When using WPA2/IEEE 802.11i, wpa_ie is used for RSN IE
  	 * instead. The driver can determine which version is used by
  	 * looking at the first byte of the IE (0xdd for WPA, 0x30 for
  	 * WPA2/RSN).
  	 *
  	 * When using WPS, wpa_ie is used for WPS IE instead of WPA/RSN IE.
  	 */
  	const u8 *wpa_ie;
  
  	/**
  	 * wpa_ie_len - length of the wpa_ie
  	 */
  	size_t wpa_ie_len;
  
  	/**
  	 * wpa_proto - Bitfield of WPA_PROTO_* values to indicate WPA/WPA2
  	 */
  	unsigned int wpa_proto;
  
  	/**
  	 * pairwise_suite - Selected pairwise cipher suite (WPA_CIPHER_*)
  	 *
  	 * This is usually ignored if @wpa_ie is used.
  	 */
  	unsigned int pairwise_suite;
  
  	/**
  	 * group_suite - Selected group cipher suite (WPA_CIPHER_*)
  	 *
  	 * This is usually ignored if @wpa_ie is used.
  	 */
  	unsigned int group_suite;
  
  	/**
  	 * mgmt_group_suite - Selected group management cipher suite (WPA_CIPHER_*)
  	 *
  	 * This is usually ignored if @wpa_ie is used.
  	 */
  	unsigned int mgmt_group_suite;
  
  	/**
  	 * key_mgmt_suite - Selected key management suite (WPA_KEY_MGMT_*)
  	 *
  	 * This is usually ignored if @wpa_ie is used.
  	 */
  	unsigned int key_mgmt_suite;
  
  	/**
  	 * auth_alg - Allowed authentication algorithms
  	 * Bit field of WPA_AUTH_ALG_*
  	 */
  	int auth_alg;
  
  	/**
  	 * mode - Operation mode (infra/ibss) IEEE80211_MODE_*
  	 */
  	int mode;
  
  	/**
  	 * wep_key - WEP keys for static WEP configuration
  	 */
  	const u8 *wep_key[4];
  
  	/**
  	 * wep_key_len - WEP key length for static WEP configuration
  	 */
  	size_t wep_key_len[4];
  
  	/**
  	 * wep_tx_keyidx - WEP TX key index for static WEP configuration
  	 */
  	int wep_tx_keyidx;
  
  	/**
  	 * mgmt_frame_protection - IEEE 802.11w management frame protection
  	 */
  	enum mfp_options mgmt_frame_protection;
  
  	/**
  	 * passphrase - RSN passphrase for PSK
  	 *
  	 * This value is made available only for WPA/WPA2-Personal (PSK) and
  	 * only for drivers that set WPA_DRIVER_FLAGS_4WAY_HANDSHAKE_PSK. This
  	 * is the 8..63 character ASCII passphrase, if available. Please note
  	 * that this can be %NULL if passphrase was not used to generate the
  	 * PSK. In that case, the psk field must be used to fetch the PSK.
  	 */
  	const char *passphrase;
  
  	/**
  	 * psk - RSN PSK (alternative for passphrase for PSK)
  	 *
  	 * This value is made available only for WPA/WPA2-Personal (PSK) and
  	 * only for drivers that set WPA_DRIVER_FLAGS_4WAY_HANDSHAKE_PSK. This
  	 * is the 32-octet (256-bit) PSK, if available. The driver wrapper
  	 * should be prepared to handle %NULL value as an error.
  	 */
  	const u8 *psk;
  
  	/**
  	 * drop_unencrypted - Enable/disable unencrypted frame filtering
  	 *
  	 * Configure the driver to drop all non-EAPOL frames (both receive and
  	 * transmit paths). Unencrypted EAPOL frames (ethertype 0x888e) must
  	 * still be allowed for key negotiation.
  	 */
  	int drop_unencrypted;
  
  	/**
  	 * prev_bssid - Previously used BSSID in this ESS
  	 *
  	 * When not %NULL, this is a request to use reassociation instead of
  	 * association.
  	 */
  	const u8 *prev_bssid;
  
  	/**
  	 * wps - WPS mode
  	 *
  	 * If the driver needs to do special configuration for WPS association,
  	 * this variable provides more information on what type of association
  	 * is being requested. Most drivers should not need ot use this.
  	 */
  	enum wps_mode wps;
  
  	/**
  	 * p2p - Whether this connection is a P2P group
  	 */
  	int p2p;
  
  	/**
  	 * uapsd - UAPSD parameters for the network
  	 * -1 = do not change defaults
  	 * AP mode: 1 = enabled, 0 = disabled
  	 * STA mode: bits 0..3 UAPSD enabled for VO,VI,BK,BE
  	 */
  	int uapsd;
  
  	/**
  	 * fixed_bssid - Whether to force this BSSID in IBSS mode
  	 * 1 = Fix this BSSID and prevent merges.
  	 * 0 = Do not fix BSSID.
  	 */
  	int fixed_bssid;
  
  	/**
  	 * fixed_freq - Fix control channel in IBSS mode
  	 * 0 = don't fix control channel (default)
  	 * 1 = fix control channel; this prevents IBSS merging with another
  	 *	channel
  	 */
  	int fixed_freq;
  
  	/**
  	 * disable_ht - Disable HT (IEEE 802.11n) for this connection
  	 */
  	int disable_ht;
  
  	/**
  	 * htcaps - HT Capabilities over-rides
  	 *
  	 * Only bits set in the mask will be used, and not all values are used
  	 * by the kernel anyway. Currently, MCS, MPDU and MSDU fields are used.
  	 *
  	 * Pointer to struct ieee80211_ht_capabilities.
  	 */
  	const u8 *htcaps;
  
  	/**
  	 * htcaps_mask - HT Capabilities over-rides mask
  	 *
  	 * Pointer to struct ieee80211_ht_capabilities.
  	 */
  	const u8 *htcaps_mask;
  
  #ifdef CONFIG_VHT_OVERRIDES
  	/**
  	 * disable_vht - Disable VHT for this connection
  	 */
  	int disable_vht;
  
  	/**
  	 * VHT capability overrides.
  	 */
  	const struct ieee80211_vht_capabilities *vhtcaps;
  	const struct ieee80211_vht_capabilities *vhtcaps_mask;
  #endif /* CONFIG_VHT_OVERRIDES */
  
  #ifdef CONFIG_HE_OVERRIDES
  	/**
  	 * disable_he - Disable HE for this connection
  	 */
  	int disable_he;
  #endif /* CONFIG_HE_OVERRIDES */
  
  	/**
  	 * req_key_mgmt_offload - Request key management offload for connection
  	 *
  	 * Request key management offload for this connection if the device
  	 * supports it.
  	 */
  	int req_key_mgmt_offload;
  
  	/**
  	 * req_handshake_offload - Request EAPOL handshake offload
  	 *
  	 * Request EAPOL handshake offload for this connection if the device
  	 * supports it.
  	 */
  	int req_handshake_offload;
  
  	/**
  	 * Flag for indicating whether this association includes support for
  	 * RRM (Radio Resource Measurements)
  	 */
  	int rrm_used;
  
  	/**
  	 * pbss - If set, connect to a PCP in a PBSS. Otherwise, connect to an
  	 * AP as usual. Valid for DMG network only.
  	 */
  	int pbss;
  
  	/**
  	 * fils_kek - KEK for FILS association frame protection (AES-SIV)
  	 */
  	const u8 *fils_kek;
  
  	/**
  	 * fils_kek_len: Length of fils_kek in bytes
  	 */
  	size_t fils_kek_len;
  
  	/**
  	 * fils_nonces - Nonces for FILS association frame protection
  	 * (AES-SIV AAD)
  	 */
  	const u8 *fils_nonces;
  
  	/**
  	 * fils_nonces_len: Length of fils_nonce in bytes
  	 */
  	size_t fils_nonces_len;
  
  	/**
  	 * fils_erp_username - Username part of keyName-NAI
  	 */
  	const u8 *fils_erp_username;
  
  	/**
  	 * fils_erp_username_len - Length of fils_erp_username in bytes
  	 */
  	size_t fils_erp_username_len;
  
  	/**
  	 * fils_erp_realm - Realm/domain name to use in FILS ERP
  	 */
  	const u8 *fils_erp_realm;
  
  	/**
  	 * fils_erp_realm_len - Length of fils_erp_realm in bytes
  	 */
  	size_t fils_erp_realm_len;
  
  	/**
  	 * fils_erp_next_seq_num - The next sequence number to use in FILS ERP
  	 * messages
  	 */
  	u16 fils_erp_next_seq_num;
  
  	/**
  	 * fils_erp_rrk - Re-authentication root key (rRK) for the keyName-NAI
  	 * specified by fils_erp_username@fils_erp_realm.
  	 */
  	const u8 *fils_erp_rrk;
  
  	/**
  	 * fils_erp_rrk_len - Length of fils_erp_rrk in bytes
  	 */
  	size_t fils_erp_rrk_len;
  };
  
  enum hide_ssid {
  	NO_SSID_HIDING,
  	HIDDEN_SSID_ZERO_LEN,
  	HIDDEN_SSID_ZERO_CONTENTS
  };
  
  enum ch_switch_state {
  	CH_SW_STARTED,
  	CH_SW_FINISHED
  };
  
  struct wowlan_triggers {
  	u8 any;
  	u8 disconnect;
  	u8 magic_pkt;
  	u8 gtk_rekey_failure;
  	u8 eap_identity_req;
  	u8 four_way_handshake;
  	u8 rfkill_release;
  };
  
  struct wpa_driver_ap_params {
  	/**
  	 * head - Beacon head from IEEE 802.11 header to IEs before TIM IE
  	 */
  	u8 *head;
  
  	/**
  	 * head_len - Length of the head buffer in octets
  	 */
  	size_t head_len;
  
  	/**
  	 * tail - Beacon tail following TIM IE
  	 */
  	u8 *tail;
  
  	/**
  	 * tail_len - Length of the tail buffer in octets
  	 */
  	size_t tail_len;
  
  	/**
  	 * dtim_period - DTIM period
  	 */
  	int dtim_period;
  
  	/**
  	 * beacon_int - Beacon interval
  	 */
  	int beacon_int;
  
  	/**
  	 * basic_rates: -1 terminated array of basic rates in 100 kbps
  	 *
  	 * This parameter can be used to set a specific basic rate set for the
  	 * BSS. If %NULL, default basic rate set is used.
  	 */
  	int *basic_rates;
  
  	/**
  	 * beacon_rate: Beacon frame data rate
  	 *
  	 * This parameter can be used to set a specific Beacon frame data rate
  	 * for the BSS. The interpretation of this value depends on the
  	 * rate_type (legacy: in 100 kbps units, HT: HT-MCS, VHT: VHT-MCS). If
  	 * beacon_rate == 0 and rate_type == 0 (BEACON_RATE_LEGACY), the default
  	 * Beacon frame data rate is used.
  	 */
  	unsigned int beacon_rate;
  
  	/**
  	 * beacon_rate_type: Beacon data rate type (legacy/HT/VHT)
  	 */
  	enum beacon_rate_type rate_type;
  
  	/**
  	 * proberesp - Probe Response template
  	 *
  	 * This is used by drivers that reply to Probe Requests internally in
  	 * AP mode and require the full Probe Response template.
  	 */
  	u8 *proberesp;
  
  	/**
  	 * proberesp_len - Length of the proberesp buffer in octets
  	 */
  	size_t proberesp_len;
  
  	/**
  	 * ssid - The SSID to use in Beacon/Probe Response frames
  	 */
  	const u8 *ssid;
  
  	/**
  	 * ssid_len - Length of the SSID (1..32)
  	 */
  	size_t ssid_len;
  
  	/**
  	 * hide_ssid - Whether to hide the SSID
  	 */
  	enum hide_ssid hide_ssid;
  
  	/**
  	 * pairwise_ciphers - WPA_CIPHER_* bitfield
  	 */
  	unsigned int pairwise_ciphers;
  
  	/**
  	 * group_cipher - WPA_CIPHER_*
  	 */
  	unsigned int group_cipher;
  
  	/**
  	 * key_mgmt_suites - WPA_KEY_MGMT_* bitfield
  	 */
  	unsigned int key_mgmt_suites;
  
  	/**
  	 * auth_algs - WPA_AUTH_ALG_* bitfield
  	 */
  	unsigned int auth_algs;
  
  	/**
  	 * wpa_version - WPA_PROTO_* bitfield
  	 */
  	unsigned int wpa_version;
  
  	/**
  	 * privacy - Whether privacy is used in the BSS
  	 */
  	int privacy;
  
  	/**
  	 * beacon_ies - WPS/P2P IE(s) for Beacon frames
  	 *
  	 * This is used to add IEs like WPS IE and P2P IE by drivers that do
  	 * not use the full Beacon template.
  	 */
  	const struct wpabuf *beacon_ies;
  
  	/**
  	 * proberesp_ies - P2P/WPS IE(s) for Probe Response frames
  	 *
  	 * This is used to add IEs like WPS IE and P2P IE by drivers that
  	 * reply to Probe Request frames internally.
  	 */
  	const struct wpabuf *proberesp_ies;
  
  	/**
  	 * assocresp_ies - WPS IE(s) for (Re)Association Response frames
  	 *
  	 * This is used to add IEs like WPS IE by drivers that reply to
  	 * (Re)Association Request frames internally.
  	 */
  	const struct wpabuf *assocresp_ies;
  
  	/**
  	 * isolate - Whether to isolate frames between associated stations
  	 *
  	 * If this is non-zero, the AP is requested to disable forwarding of
  	 * frames between associated stations.
  	 */
  	int isolate;
  
  	/**
  	 * cts_protect - Whether CTS protection is enabled
  	 */
  	int cts_protect;
  
  	/**
  	 * preamble - Whether short preamble is enabled
  	 */
  	int preamble;
  
  	/**
  	 * short_slot_time - Whether short slot time is enabled
  	 *
  	 * 0 = short slot time disable, 1 = short slot time enabled, -1 = do
  	 * not set (e.g., when 802.11g mode is not in use)
  	 */
  	int short_slot_time;
  
  	/**
  	 * ht_opmode - HT operation mode or -1 if HT not in use
  	 */
  	int ht_opmode;
  
  	/**
  	 * interworking - Whether Interworking is enabled
  	 */
  	int interworking;
  
  	/**
  	 * hessid - Homogeneous ESS identifier or %NULL if not set
  	 */
  	const u8 *hessid;
  
  	/**
  	 * access_network_type - Access Network Type (0..15)
  	 *
  	 * This is used for filtering Probe Request frames when Interworking is
  	 * enabled.
  	 */
  	u8 access_network_type;
  
  	/**
  	 * ap_max_inactivity - Timeout in seconds to detect STA's inactivity
  	 *
  	 * This is used by driver which advertises this capability.
  	 */
  	int ap_max_inactivity;
  
  	/**
  	 * ctwindow - Client Traffic Window (in TUs)
  	 */
  	u8 p2p_go_ctwindow;
  
  	/**
  	 * disable_dgaf - Whether group-addressed frames are disabled
  	 */
  	int disable_dgaf;
  
  	/**
  	 * osen - Whether OSEN security is enabled
  	 */
  	int osen;
  
  	/**
  	 * freq - Channel parameters for dynamic bandwidth changes
  	 */
  	struct hostapd_freq_params *freq;
  
  	/**
  	 * reenable - Whether this is to re-enable beaconing
  	 */
  	int reenable;
  
  	/**
  	 * pbss - Whether to start a PCP (in PBSS) instead of an AP in
  	 * infrastructure BSS. Valid only for DMG network.
  	 */
  	int pbss;
  
  	/**
  	 * multicast_to_unicast - Whether to use multicast_to_unicast
  	 *
  	 * If this is non-zero, the AP is requested to perform multicast to
  	 * unicast conversion for ARP, IPv4, and IPv6 frames (possibly within
  	 * 802.1Q). If enabled, such frames are to be sent to each station
  	 * separately, with the DA replaced by their own MAC address rather
  	 * than the group address.
  	 *
  	 * Note that this may break certain expectations of the receiver, such
  	 * as the ability to drop unicast IP packets received within multicast
  	 * L2 frames, or the ability to not send ICMP destination unreachable
  	 * messages for packets received in L2 multicast (which is required,
  	 * but the receiver can't tell the difference if this new option is
  	 * enabled.)
  	 *
  	 * This also doesn't implement the 802.11 DMS (directed multicast
  	 * service).
  	 */
  	int multicast_to_unicast;
  
  	/**
  	 * ftm_responder - Whether FTM responder is enabled
  	 */
  	int ftm_responder;
  
  	/**
  	 * lci - Binary data, the content of an LCI report IE with type 8 as
  	 * defined in IEEE Std 802.11-2016, 9.4.2.22.10
  	 */
  	const struct wpabuf *lci;
  
  	/**
  	 * civic - Binary data, the content of a measurement report IE with
  	 * type 11 as defined in IEEE Std 802.11-2016, 9.4.2.22.13
  	 */
  	const struct wpabuf *civic;
  
  	/**
  	 * he_spr - Whether Spatial Reuse is enabled
  	 */
  	 int he_spr;
  
  	/**
  	 * he_spr_srg_obss_pd_min_offset - Minimum TX power offset
  	 */
  	 int he_spr_srg_obss_pd_min_offset;
  
  	/**
  	 * he_spr_srg_obss_pd_max_offset - Maximum TX power offset
  	 */
  	 int he_spr_srg_obss_pd_max_offset;
  
  	/**
  	 * he_bss_color - Whether the BSS Color is disabled
  	 */
  	int he_bss_color_disabled;
  
  	/**
  	 * he_bss_color_partial - The BSS Color AID equation
  	 */
  	int he_bss_color_partial;
  
  	/**
  	 * he_bss_color - The BSS Color of the AP
  	 */
  	int he_bss_color;
  
  	/**
  	 * twt_responder - Whether Target Wait Time responder is enabled
  	 */
  	int twt_responder;
  };
  
  struct wpa_driver_mesh_bss_params {
  #define WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS		0x00000001
  #define WPA_DRIVER_MESH_CONF_FLAG_PEER_LINK_TIMEOUT	0x00000002
  #define WPA_DRIVER_MESH_CONF_FLAG_MAX_PEER_LINKS	0x00000004
  #define WPA_DRIVER_MESH_CONF_FLAG_HT_OP_MODE		0x00000008
  #define WPA_DRIVER_MESH_CONF_FLAG_RSSI_THRESHOLD	0x00000010
  	/*
  	 * TODO: Other mesh configuration parameters would go here.
  	 * See NL80211_MESHCONF_* for all the mesh config parameters.
  	 */
  	unsigned int flags;
  	int auto_plinks;
  	int peer_link_timeout;
  	int max_peer_links;
  	int rssi_threshold;
  	u16 ht_opmode;
  };
  
  struct wpa_driver_mesh_join_params {
  	const u8 *meshid;
  	int meshid_len;
  	const int *basic_rates;
  	const u8 *ies;
  	int ie_len;
  	struct hostapd_freq_params freq;
  	int beacon_int;
  	int dtim_period;
  	struct wpa_driver_mesh_bss_params conf;
  #define WPA_DRIVER_MESH_FLAG_USER_MPM	0x00000001
  #define WPA_DRIVER_MESH_FLAG_DRIVER_MPM	0x00000002
  #define WPA_DRIVER_MESH_FLAG_SAE_AUTH	0x00000004
  #define WPA_DRIVER_MESH_FLAG_AMPE	0x00000008
  	unsigned int flags;
  };
  
  struct wpa_driver_set_key_params {
  	/**
  	 * ifname - Interface name (for multi-SSID/VLAN support) */
  	const char *ifname;
  
  	/**
  	 * alg - Encryption algorithm
  	 *
  	 * (%WPA_ALG_NONE, %WPA_ALG_WEP, %WPA_ALG_TKIP, %WPA_ALG_CCMP,
  	 * %WPA_ALG_BIP_AES_CMAC_128, %WPA_ALG_GCMP, %WPA_ALG_GCMP_256,
  	 * %WPA_ALG_CCMP_256, %WPA_ALG_BIP_GMAC_128, %WPA_ALG_BIP_GMAC_256,
  	 * %WPA_ALG_BIP_CMAC_256);
  	 * %WPA_ALG_NONE clears the key. */
  	enum wpa_alg alg;
  
  	/**
  	 * addr - Address of the peer STA
  	 *
  	 * (BSSID of the current AP when setting pairwise key in station mode),
  	 * ff:ff:ff:ff:ff:ff for broadcast keys, %NULL for default keys that
  	 * are used both for broadcast and unicast; when clearing keys, %NULL
  	 * is used to indicate that both the broadcast-only and default key of
  	 * the specified key index is to be cleared */
  	const u8 *addr;
  
  	/**
  	 * key_idx - Key index
  	 *
  	 * (0..3), usually 0 for unicast keys; 4..5 for IGTK; 6..7 for BIGTK */
  	int key_idx;
  
  	/**
  	 * set_tx - Configure this key as the default Tx key
  	 *
  	 * Only used when driver does not support separate unicast/individual
  	 * key */
  	int set_tx;
  
  	/**
  	 * seq - Sequence number/packet number
  	 *
  	 * seq_len octets, the next packet number to be used for in replay
  	 * protection; configured for Rx keys (in most cases, this is only used
  	 * with broadcast keys and set to zero for unicast keys); %NULL if not
  	 * set */
  	const u8 *seq;
  
  	/**
  	 * seq_len - Length of the seq, depends on the algorithm
  	 *
  	 * TKIP: 6 octets, CCMP/GCMP: 6 octets, IGTK: 6 octets */
  	size_t seq_len;
  
  	/**
  	 * key - Key buffer
  	 *
  	 * TKIP: 16-byte temporal key, 8-byte Tx Mic key, 8-byte Rx Mic Key */
  	const u8 *key;
  
  	/**
  	 * key_len - Length of the key buffer in octets
  	 *
  	 * WEP: 5 or 13, TKIP: 32, CCMP/GCMP: 16, IGTK: 16 */
  	size_t key_len;
  
  	/**
  	 * vlan_id - VLAN index (0..4095) for VLAN offload cases */
  	int vlan_id;
  
  	/**
  	 * key_flag - Additional key flags
  	 *
  	 * %KEY_FLAG_MODIFY
  	 *  Set when an already installed key must be updated.
  	 *  So far the only use-case is changing RX/TX status for
  	 *  pairwise keys. Must not be set when deleting a key.
  	 * %KEY_FLAG_DEFAULT
  	 *  Set when the key is also a default key. Must not be set when
  	 *  deleting a key.
  	 * %KEY_FLAG_RX
  	 *  The key is valid for RX. Must not be set when deleting a key.
  	 * %KEY_FLAG_TX
  	 *  The key is valid for TX. Must not be set when deleting a key.
  	 * %KEY_FLAG_GROUP
  	 *  The key is a broadcast or group key.
  	 * %KEY_FLAG_PAIRWISE
  	 *  The key is a pairwise key.
  	 * %KEY_FLAG_PMK
  	 *  The key is a Pairwise Master Key (PMK).
  	 *
  	 * Valid and pre-defined combinations are:
  	 * %KEY_FLAG_GROUP_RX_TX
  	 *  WEP key not to be installed as default key.
  	 * %KEY_FLAG_GROUP_RX_TX_DEFAULT
  	 *  Default WEP or WPA-NONE key.
  	 * %KEY_FLAG_GROUP_RX
  	 *  GTK key valid for RX only.
  	 * %KEY_FLAG_GROUP_TX_DEFAULT
  	 *  GTK key valid for TX only, immediately taking over TX.
  	 * %KEY_FLAG_PAIRWISE_RX_TX
  	 *  Pairwise key immediately becoming the active pairwise key.
  	 * %KEY_FLAG_PAIRWISE_RX
  	 *  Pairwise key not yet valid for TX. (Only usable when Extended
  	 *  Key ID is supported by the driver.)
  	 * %KEY_FLAG_PAIRWISE_RX_TX_MODIFY
  	 *  Enable TX for a pairwise key installed with
  	 *  KEY_FLAG_PAIRWISE_RX.
  	 *
  	 * Not a valid standalone key type but pre-defined to be combined
  	 * with other key_flags:
  	 * %KEY_FLAG_RX_TX
  	 *  RX/TX key. */
  	enum key_flag key_flag;
  };
  
  enum wpa_driver_if_type {
  	/**
  	 * WPA_IF_STATION - Station mode interface
  	 */
  	WPA_IF_STATION,
  
  	/**
  	 * WPA_IF_AP_VLAN - AP mode VLAN interface
  	 *
  	 * This interface shares its address and Beacon frame with the main
  	 * BSS.
  	 */
  	WPA_IF_AP_VLAN,
  
  	/**
  	 * WPA_IF_AP_BSS - AP mode BSS interface
  	 *
  	 * This interface has its own address and Beacon frame.
  	 */
  	WPA_IF_AP_BSS,
  
  	/**
  	 * WPA_IF_P2P_GO - P2P Group Owner
  	 */
  	WPA_IF_P2P_GO,
  
  	/**
  	 * WPA_IF_P2P_CLIENT - P2P Client
  	 */
  	WPA_IF_P2P_CLIENT,
  
  	/**
  	 * WPA_IF_P2P_GROUP - P2P Group interface (will become either
  	 * WPA_IF_P2P_GO or WPA_IF_P2P_CLIENT, but the role is not yet known)
  	 */
  	WPA_IF_P2P_GROUP,
  
  	/**
  	 * WPA_IF_P2P_DEVICE - P2P Device interface is used to indentify the
  	 * abstracted P2P Device function in the driver
  	 */
  	WPA_IF_P2P_DEVICE,
  
  	/*
  	 * WPA_IF_MESH - Mesh interface
  	 */
  	WPA_IF_MESH,
  
  	/*
  	 * WPA_IF_TDLS - TDLS offchannel interface (used for pref freq only)
  	 */
  	WPA_IF_TDLS,
  
  	/*
  	 * WPA_IF_IBSS - IBSS interface (used for pref freq only)
  	 */
  	WPA_IF_IBSS,
  
  	/*
  	 * WPA_IF_NAN - NAN Device
  	 */
  	WPA_IF_NAN,
  
  	/* keep last */
  	WPA_IF_MAX
  };
  
  /**
   * struct wpa_driver_capa - Driver capability information
   */
  struct wpa_driver_capa {
  #define WPA_DRIVER_CAPA_KEY_MGMT_WPA		0x00000001
  #define WPA_DRIVER_CAPA_KEY_MGMT_WPA2		0x00000002
  #define WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK	0x00000004
  #define WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK	0x00000008
  #define WPA_DRIVER_CAPA_KEY_MGMT_WPA_NONE	0x00000010
  #define WPA_DRIVER_CAPA_KEY_MGMT_FT		0x00000020
  #define WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK		0x00000040
  #define WPA_DRIVER_CAPA_KEY_MGMT_WAPI_PSK	0x00000080
  #define WPA_DRIVER_CAPA_KEY_MGMT_SUITE_B	0x00000100
  #define WPA_DRIVER_CAPA_KEY_MGMT_SUITE_B_192	0x00000200
  #define WPA_DRIVER_CAPA_KEY_MGMT_OWE		0x00000400
  #define WPA_DRIVER_CAPA_KEY_MGMT_DPP		0x00000800
  #define WPA_DRIVER_CAPA_KEY_MGMT_FILS_SHA256    0x00001000
  #define WPA_DRIVER_CAPA_KEY_MGMT_FILS_SHA384    0x00002000
  #define WPA_DRIVER_CAPA_KEY_MGMT_FT_FILS_SHA256 0x00004000
  #define WPA_DRIVER_CAPA_KEY_MGMT_FT_FILS_SHA384 0x00008000
  #define WPA_DRIVER_CAPA_KEY_MGMT_SAE 		0x00010000
  	/** Bitfield of supported key management suites */
  	unsigned int key_mgmt;
  	unsigned int key_mgmt_iftype[WPA_IF_MAX];
  
  #define WPA_DRIVER_CAPA_ENC_WEP40	0x00000001
  #define WPA_DRIVER_CAPA_ENC_WEP104	0x00000002
  #define WPA_DRIVER_CAPA_ENC_TKIP	0x00000004
  #define WPA_DRIVER_CAPA_ENC_CCMP	0x00000008
  #define WPA_DRIVER_CAPA_ENC_WEP128	0x00000010
  #define WPA_DRIVER_CAPA_ENC_GCMP	0x00000020
  #define WPA_DRIVER_CAPA_ENC_GCMP_256	0x00000040
  #define WPA_DRIVER_CAPA_ENC_CCMP_256	0x00000080
  #define WPA_DRIVER_CAPA_ENC_BIP		0x00000100
  #define WPA_DRIVER_CAPA_ENC_BIP_GMAC_128	0x00000200
  #define WPA_DRIVER_CAPA_ENC_BIP_GMAC_256	0x00000400
  #define WPA_DRIVER_CAPA_ENC_BIP_CMAC_256	0x00000800
  #define WPA_DRIVER_CAPA_ENC_GTK_NOT_USED	0x00001000
  	/** Bitfield of supported cipher suites */
  	unsigned int enc;
  
  #define WPA_DRIVER_AUTH_OPEN		0x00000001
  #define WPA_DRIVER_AUTH_SHARED		0x00000002
  #define WPA_DRIVER_AUTH_LEAP		0x00000004
  	/** Bitfield of supported IEEE 802.11 authentication algorithms */
  	unsigned int auth;
  
  /** Driver generated WPA/RSN IE */
  #define WPA_DRIVER_FLAGS_DRIVER_IE	0x00000001
  /** Driver needs static WEP key setup after association command */
  #define WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC 0x00000002
  /** Driver takes care of all DFS operations */
  #define WPA_DRIVER_FLAGS_DFS_OFFLOAD			0x00000004
  /** Driver takes care of RSN 4-way handshake internally; PMK is configured with
   * struct wpa_driver_ops::set_key using key_flag = KEY_FLAG_PMK */
  #define WPA_DRIVER_FLAGS_4WAY_HANDSHAKE_8021X		0x00000008
  /** Driver is for a wired Ethernet interface */
  #define WPA_DRIVER_FLAGS_WIRED		0x00000010
  /** Driver provides separate commands for authentication and association (SME in
   * wpa_supplicant). */
  #define WPA_DRIVER_FLAGS_SME		0x00000020
  /** Driver supports AP mode */
  #define WPA_DRIVER_FLAGS_AP		0x00000040
  /** Driver needs static WEP key setup after association has been completed */
  #define WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE	0x00000080
  /** Driver supports dynamic HT 20/40 MHz channel changes during BSS lifetime */
  #define WPA_DRIVER_FLAGS_HT_2040_COEX			0x00000100
  /** Driver supports concurrent P2P operations */
  #define WPA_DRIVER_FLAGS_P2P_CONCURRENT	0x00000200
  /**
   * Driver uses the initial interface as a dedicated management interface, i.e.,
   * it cannot be used for P2P group operations or non-P2P purposes.
   */
  #define WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE	0x00000400
  /** This interface is P2P capable (P2P GO or P2P Client) */
  #define WPA_DRIVER_FLAGS_P2P_CAPABLE	0x00000800
  /** Driver supports station and key removal when stopping an AP */
  #define WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT		0x00001000
  /**
   * Driver uses the initial interface for P2P management interface and non-P2P
   * purposes (e.g., connect to infra AP), but this interface cannot be used for
   * P2P group operations.
   */
  #define WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P		0x00002000
  /**
   * Driver is known to use sane error codes, i.e., when it indicates that
   * something (e.g., association) fails, there was indeed a failure and the
   * operation does not end up getting completed successfully later.
   */
  #define WPA_DRIVER_FLAGS_SANE_ERROR_CODES		0x00004000
  /** Driver supports off-channel TX */
  #define WPA_DRIVER_FLAGS_OFFCHANNEL_TX			0x00008000
  /** Driver indicates TX status events for EAPOL Data frames */
  #define WPA_DRIVER_FLAGS_EAPOL_TX_STATUS		0x00010000
  /** Driver indicates TX status events for Deauth/Disassoc frames */
  #define WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS		0x00020000
  /** Driver supports roaming (BSS selection) in firmware */
  #define WPA_DRIVER_FLAGS_BSS_SELECTION			0x00040000
  /** Driver supports operating as a TDLS peer */
  #define WPA_DRIVER_FLAGS_TDLS_SUPPORT			0x00080000
  /** Driver requires external TDLS setup/teardown/discovery */
  #define WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP		0x00100000
  /** Driver indicates support for Probe Response offloading in AP mode */
  #define WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD		0x00200000
  /** Driver supports U-APSD in AP mode */
  #define WPA_DRIVER_FLAGS_AP_UAPSD			0x00400000
  /** Driver supports inactivity timer in AP mode */
  #define WPA_DRIVER_FLAGS_INACTIVITY_TIMER		0x00800000
  /** Driver expects user space implementation of MLME in AP mode */
  #define WPA_DRIVER_FLAGS_AP_MLME			0x01000000
  /** Driver supports SAE with user space SME */
  #define WPA_DRIVER_FLAGS_SAE				0x02000000
  /** Driver makes use of OBSS scan mechanism in wpa_supplicant */
  #define WPA_DRIVER_FLAGS_OBSS_SCAN			0x04000000
  /** Driver supports IBSS (Ad-hoc) mode */
  #define WPA_DRIVER_FLAGS_IBSS				0x08000000
  /** Driver supports radar detection */
  #define WPA_DRIVER_FLAGS_RADAR				0x10000000
  /** Driver supports a dedicated interface for P2P Device */
  #define WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE		0x20000000
  /** Driver supports QoS Mapping */
  #define WPA_DRIVER_FLAGS_QOS_MAPPING			0x40000000
  /** Driver supports CSA in AP mode */
  #define WPA_DRIVER_FLAGS_AP_CSA				0x80000000
  /** Driver supports mesh */
  #define WPA_DRIVER_FLAGS_MESH			0x0000000100000000ULL
  /** Driver support ACS offload */
  #define WPA_DRIVER_FLAGS_ACS_OFFLOAD		0x0000000200000000ULL
  /** Driver supports key management offload */
  #define WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD	0x0000000400000000ULL
  /** Driver supports TDLS channel switching */
  #define WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH	0x0000000800000000ULL
  /** Driver supports IBSS with HT datarates */
  #define WPA_DRIVER_FLAGS_HT_IBSS		0x0000001000000000ULL
  /** Driver supports IBSS with VHT datarates */
  #define WPA_DRIVER_FLAGS_VHT_IBSS		0x0000002000000000ULL
  /** Driver supports automatic band selection */
  #define WPA_DRIVER_FLAGS_SUPPORT_HW_MODE_ANY	0x0000004000000000ULL
  /** Driver supports simultaneous off-channel operations */
  #define WPA_DRIVER_FLAGS_OFFCHANNEL_SIMULTANEOUS	0x0000008000000000ULL
  /** Driver supports full AP client state */
  #define WPA_DRIVER_FLAGS_FULL_AP_CLIENT_STATE	0x0000010000000000ULL
  /** Driver supports P2P Listen offload */
  #define WPA_DRIVER_FLAGS_P2P_LISTEN_OFFLOAD     0x0000020000000000ULL
  /** Driver supports FILS */
  #define WPA_DRIVER_FLAGS_SUPPORT_FILS		0x0000040000000000ULL
  /** Driver supports Beacon frame TX rate configuration (legacy rates) */
  #define WPA_DRIVER_FLAGS_BEACON_RATE_LEGACY	0x0000080000000000ULL
  /** Driver supports Beacon frame TX rate configuration (HT rates) */
  #define WPA_DRIVER_FLAGS_BEACON_RATE_HT		0x0000100000000000ULL
  /** Driver supports Beacon frame TX rate configuration (VHT rates) */
  #define WPA_DRIVER_FLAGS_BEACON_RATE_VHT	0x0000200000000000ULL
  /** Driver supports mgmt_tx with random TX address in non-connected state */
  #define WPA_DRIVER_FLAGS_MGMT_TX_RANDOM_TA	0x0000400000000000ULL
  /** Driver supports mgmt_tx with random TX addr in connected state */
  #define WPA_DRIVER_FLAGS_MGMT_TX_RANDOM_TA_CONNECTED	0x0000800000000000ULL
  /** Driver supports better BSS reporting with sched_scan in connected mode */
  #define WPA_DRIVER_FLAGS_SCHED_SCAN_RELATIVE_RSSI	0x0001000000000000ULL
  /** Driver supports HE capabilities */
  #define WPA_DRIVER_FLAGS_HE_CAPABILITIES	0x0002000000000000ULL
  /** Driver supports FILS shared key offload */
  #define WPA_DRIVER_FLAGS_FILS_SK_OFFLOAD	0x0004000000000000ULL
  /** Driver supports all OCE STA specific mandatory features */
  #define WPA_DRIVER_FLAGS_OCE_STA		0x0008000000000000ULL
  /** Driver supports all OCE AP specific mandatory features */
  #define WPA_DRIVER_FLAGS_OCE_AP			0x0010000000000000ULL
  /**
   * Driver supports all OCE STA-CFON specific mandatory features only.
   * If a driver sets this bit but not the %WPA_DRIVER_FLAGS_OCE_AP, the
   * userspace shall assume that this driver may not support all OCE AP
   * functionality but can support only OCE STA-CFON functionality.
   */
  #define WPA_DRIVER_FLAGS_OCE_STA_CFON		0x0020000000000000ULL
  /** Driver supports MFP-optional in the connect command */
  #define WPA_DRIVER_FLAGS_MFP_OPTIONAL		0x0040000000000000ULL
  /** Driver is a self-managed regulatory device */
  #define WPA_DRIVER_FLAGS_SELF_MANAGED_REGULATORY       0x0080000000000000ULL
  /** Driver supports FTM responder functionality */
  #define WPA_DRIVER_FLAGS_FTM_RESPONDER		0x0100000000000000ULL
  /** Driver support 4-way handshake offload for WPA-Personal */
  #define WPA_DRIVER_FLAGS_4WAY_HANDSHAKE_PSK	0x0200000000000000ULL
  /** Driver supports a separate control port TX for EAPOL frames */
  #define WPA_DRIVER_FLAGS_CONTROL_PORT		0x0400000000000000ULL
  /** Driver supports VLAN offload */
  #define WPA_DRIVER_FLAGS_VLAN_OFFLOAD		0x0800000000000000ULL
  /** Driver supports UPDATE_FT_IES command */
  #define WPA_DRIVER_FLAGS_UPDATE_FT_IES		0x1000000000000000ULL
  /** Driver can correctly rekey PTKs without Extended Key ID */
  #define WPA_DRIVER_FLAGS_SAFE_PTK0_REKEYS	0x2000000000000000ULL
  /** Driver supports Beacon protection */
  #define WPA_DRIVER_FLAGS_BEACON_PROTECTION	0x4000000000000000ULL
  /** Driver supports Extended Key ID */
  #define WPA_DRIVER_FLAGS_EXTENDED_KEY_ID	0x8000000000000000ULL
  	u64 flags;
  
  /** Driver supports a separate control port RX for EAPOL frames */
  #define WPA_DRIVER_FLAGS2_CONTROL_PORT_RX	0x0000000000000001ULL
  	u64 flags2;
  
  #define FULL_AP_CLIENT_STATE_SUPP(drv_flags) \
  	(drv_flags & WPA_DRIVER_FLAGS_FULL_AP_CLIENT_STATE)
  
  	unsigned int wmm_ac_supported:1;
  
  	unsigned int mac_addr_rand_scan_supported:1;
  	unsigned int mac_addr_rand_sched_scan_supported:1;
  
  	/** Maximum number of supported active probe SSIDs */
  	int max_scan_ssids;
  
  	/** Maximum number of supported active probe SSIDs for sched_scan */
  	int max_sched_scan_ssids;
  
  	/** Maximum number of supported scan plans for scheduled scan */
  	unsigned int max_sched_scan_plans;
  
  	/** Maximum interval in a scan plan. In seconds */
  	u32 max_sched_scan_plan_interval;
  
  	/** Maximum number of iterations in a single scan plan */
  	u32 max_sched_scan_plan_iterations;
  
  	/** Whether sched_scan (offloaded scanning) is supported */
  	int sched_scan_supported;
  
  	/** Maximum number of supported match sets for sched_scan */
  	int max_match_sets;
  
  	/**
  	 * max_remain_on_chan - Maximum remain-on-channel duration in msec
  	 */
  	unsigned int max_remain_on_chan;
  
  	/**
  	 * max_stations - Maximum number of associated stations the driver
  	 * supports in AP mode
  	 */
  	unsigned int max_stations;
  
  	unsigned int bands_mask; /* What bands does this radio support? */
  
  	/**
  	 * probe_resp_offloads - Bitmap of supported protocols by the driver
  	 * for Probe Response offloading.
  	 */
  /** Driver Probe Response offloading support for WPS ver. 1 */
  #define WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS		0x00000001
  /** Driver Probe Response offloading support for WPS ver. 2 */
  #define WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2		0x00000002
  /** Driver Probe Response offloading support for P2P */
  #define WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P		0x00000004
  /** Driver Probe Response offloading support for IEEE 802.11u (Interworking) */
  #define WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING	0x00000008
  	unsigned int probe_resp_offloads;
  
  	unsigned int max_acl_mac_addrs;
  
  	/**
  	 * Number of supported concurrent channels
  	 */
  	unsigned int num_multichan_concurrent;
  
  	/**
  	 * extended_capa - extended capabilities in driver/device
  	 *
  	 * Must be allocated and freed by driver and the pointers must be
  	 * valid for the lifetime of the driver, i.e., freed in deinit()
  	 */
  	const u8 *extended_capa, *extended_capa_mask;
  	unsigned int extended_capa_len;
  
  	struct wowlan_triggers wowlan_triggers;
  
  /** Driver adds the DS Params Set IE in Probe Request frames */
  #define WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES	0x00000001
  /** Driver adds the WFA TPC IE in Probe Request frames */
  #define WPA_DRIVER_FLAGS_WFA_TPC_IE_IN_PROBES		0x00000002
  /** Driver handles quiet period requests */
  #define WPA_DRIVER_FLAGS_QUIET				0x00000004
  /**
   * Driver is capable of inserting the current TX power value into the body of
   * transmitted frames.
   * Background: Some Action frames include a TPC Report IE. This IE contains a
   * TX power field, which has to be updated by lower layers. One such Action
   * frame is Link Measurement Report (part of RRM). Another is TPC Report (part
   * of spectrum management). Note that this insertion takes place at a fixed
   * offset, namely the 6th byte in the Action frame body.
   */
  #define WPA_DRIVER_FLAGS_TX_POWER_INSERTION		0x00000008
  /**
   * Driver supports RRM. With this support, the driver will accept to use RRM in
   * (Re)Association Request frames, without supporting quiet period.
   */
  #define WPA_DRIVER_FLAGS_SUPPORT_RRM			0x00000010
  
  /** Driver supports setting the scan dwell time */
  #define WPA_DRIVER_FLAGS_SUPPORT_SET_SCAN_DWELL		0x00000020
  /** Driver supports Beacon Report Measurement */
  #define WPA_DRIVER_FLAGS_SUPPORT_BEACON_REPORT		0x00000040
  
  	u32 rrm_flags;
  
  	/* Driver concurrency capabilities */
  	unsigned int conc_capab;
  	/* Maximum number of concurrent channels on 2.4 GHz */
  	unsigned int max_conc_chan_2_4;
  	/* Maximum number of concurrent channels on 5 GHz */
  	unsigned int max_conc_chan_5_0;
  
  	/* Maximum number of supported CSA counters */
  	u16 max_csa_counters;
  };
  
  
  struct hostapd_data;
  
  #define STA_DRV_DATA_TX_MCS BIT(0)
  #define STA_DRV_DATA_RX_MCS BIT(1)
  #define STA_DRV_DATA_TX_VHT_MCS BIT(2)
  #define STA_DRV_DATA_RX_VHT_MCS BIT(3)
  #define STA_DRV_DATA_TX_VHT_NSS BIT(4)
  #define STA_DRV_DATA_RX_VHT_NSS BIT(5)
  #define STA_DRV_DATA_TX_SHORT_GI BIT(6)
  #define STA_DRV_DATA_RX_SHORT_GI BIT(7)
  #define STA_DRV_DATA_LAST_ACK_RSSI BIT(8)
  
  struct hostap_sta_driver_data {
  	unsigned long rx_packets, tx_packets;
  	unsigned long long rx_bytes, tx_bytes;
  	unsigned long long rx_airtime, tx_airtime;
  	int bytes_64bit; /* whether 64-bit byte counters are supported */
  	unsigned long current_tx_rate;
  	unsigned long current_rx_rate;
  	unsigned long inactive_msec;
  	unsigned long flags; /* bitfield of STA_DRV_DATA_* */
  	unsigned long num_ps_buf_frames;
  	unsigned long tx_retry_failed;
  	unsigned long tx_retry_count;
  	s8 last_ack_rssi;
  	unsigned long backlog_packets;
  	unsigned long backlog_bytes;
  	s8 signal;
  	u8 rx_vhtmcs;
  	u8 tx_vhtmcs;
  	u8 rx_mcs;
  	u8 tx_mcs;
  	u8 rx_vht_nss;
  	u8 tx_vht_nss;
  };
  
  struct hostapd_sta_add_params {
  	const u8 *addr;
  	u16 aid;
  	u16 capability;
  	const u8 *supp_rates;
  	size_t supp_rates_len;
  	u16 listen_interval;
  	const struct ieee80211_ht_capabilities *ht_capabilities;
  	const struct ieee80211_vht_capabilities *vht_capabilities;
  	int vht_opmode_enabled;
  	u8 vht_opmode;
  	const struct ieee80211_he_capabilities *he_capab;
  	size_t he_capab_len;
  	const struct ieee80211_he_6ghz_band_cap *he_6ghz_capab;
  	u32 flags; /* bitmask of WPA_STA_* flags */
  	u32 flags_mask; /* unset bits in flags */
  #ifdef CONFIG_MESH
  	enum mesh_plink_state plink_state;
  	u16 peer_aid;
  #endif /* CONFIG_MESH */
  	int set; /* Set STA parameters instead of add */
  	u8 qosinfo;
  	const u8 *ext_capab;
  	size_t ext_capab_len;
  	const u8 *supp_channels;
  	size_t supp_channels_len;
  	const u8 *supp_oper_classes;
  	size_t supp_oper_classes_len;
  	int support_p2p_ps;
  };
  
  struct mac_address {
  	u8 addr[ETH_ALEN];
  };
  
  struct hostapd_acl_params {
  	u8 acl_policy;
  	unsigned int num_mac_acl;
  	struct mac_address mac_acl[0];
  };
  
  struct wpa_init_params {
  	void *global_priv;
  	const u8 *bssid;
  	const char *ifname;
  	const char *driver_params;
  	int use_pae_group_addr;
  	char **bridge;
  	size_t num_bridge;
  
  	/* Advertise legacy rate mask, 12 bits for legacy rates, (1<<31) to
  	 * enable use of this mask.  This determines what rates should be
  	 * advertised as supported in probe requests and so forth.
  	 */
  	unsigned int adv_legacy_rates;
  
  	/* TX legacy rate mask, 12 bits for legacy rates, (1<<31) to
  	 * enable use of this mask.  This will be used to configure the
  	 * kernel's tx-rate-ctrl logic for this interface.
  	 */
  	unsigned int tx_legacy_rates;
  
  	u8 *own_addr; /* buffer for writing own MAC address */
  };
  
  
  struct wpa_bss_params {
  	/** Interface name (for multi-SSID/VLAN support) */
  	const char *ifname;
  	/** Whether IEEE 802.1X or WPA/WPA2 is enabled */
  	int enabled;
  
  	int wpa;
  	int ieee802_1x;
  	int wpa_group;
  	int wpa_pairwise;
  	int wpa_key_mgmt;
  	int rsn_preauth;
  	enum mfp_options ieee80211w;
  };
  
  #define WPA_STA_AUTHORIZED BIT(0)
  #define WPA_STA_WMM BIT(1)
  #define WPA_STA_SHORT_PREAMBLE BIT(2)
  #define WPA_STA_MFP BIT(3)
  #define WPA_STA_TDLS_PEER BIT(4)
  #define WPA_STA_AUTHENTICATED BIT(5)
  #define WPA_STA_ASSOCIATED BIT(6)
  
  enum tdls_oper {
  	TDLS_DISCOVERY_REQ,
  	TDLS_SETUP,
  	TDLS_TEARDOWN,
  	TDLS_ENABLE_LINK,
  	TDLS_DISABLE_LINK,
  	TDLS_ENABLE,
  	TDLS_DISABLE
  };
  
  enum wnm_oper {
  	WNM_SLEEP_ENTER_CONFIRM,
  	WNM_SLEEP_ENTER_FAIL,
  	WNM_SLEEP_EXIT_CONFIRM,
  	WNM_SLEEP_EXIT_FAIL,
  	WNM_SLEEP_TFS_REQ_IE_ADD,   /* STA requests driver to add TFS req IE */
  	WNM_SLEEP_TFS_REQ_IE_NONE,  /* STA requests empty TFS req IE */
  	WNM_SLEEP_TFS_REQ_IE_SET,   /* AP requests driver to set TFS req IE for
  				     * a STA */
  	WNM_SLEEP_TFS_RESP_IE_ADD,  /* AP requests driver to add TFS resp IE
  				     * for a STA */
  	WNM_SLEEP_TFS_RESP_IE_NONE, /* AP requests empty TFS resp IE */
  	WNM_SLEEP_TFS_RESP_IE_SET,  /* AP requests driver to set TFS resp IE
  				     * for a STA */
  	WNM_SLEEP_TFS_IE_DEL        /* AP delete the TFS IE */
  };
  
  /* enum smps_mode - SMPS mode definitions */
  enum smps_mode {
  	SMPS_AUTOMATIC,
  	SMPS_OFF,
  	SMPS_DYNAMIC,
  	SMPS_STATIC,
  
  	/* Keep last */
  	SMPS_INVALID,
  };
  
  #define WPA_INVALID_NOISE 9999
  
  /**
   * struct wpa_signal_info - Information about channel signal quality
   * @frequency: control frequency
   * @above_threshold: true if the above threshold was crossed
   *	(relevant for a CQM event)
   * @current_signal: in dBm
   * @avg_signal: in dBm
   * @avg_beacon_signal: in dBm
   * @current_noise: %WPA_INVALID_NOISE if not supported
   * @current_txrate: current TX rate
   * @chanwidth: channel width
   * @center_frq1: center frequency for the first segment
   * @center_frq2: center frequency for the second segment (if relevant)
   */
  struct wpa_signal_info {
  	u32 frequency;
  	int above_threshold;
  	int current_signal;
  	int avg_signal;
  	int avg_beacon_signal;
  	int current_noise;
  	int current_txrate;
  	enum chan_width chanwidth;
  	int center_frq1;
  	int center_frq2;
  };
  
  /**
   * struct wpa_channel_info - Information about the current channel
   * @frequency: Center frequency of the primary 20 MHz channel
   * @chanwidth: Width of the current operating channel
   * @sec_channel: Location of the secondary 20 MHz channel (either +1 or -1).
   *	This field is only filled in when using a 40 MHz channel.
   * @center_frq1: Center frequency of frequency segment 0
   * @center_frq2: Center frequency of frequency segment 1 (for 80+80 channels)
   * @seg1_idx: Frequency segment 1 index when using a 80+80 channel. This is
   *	derived from center_frq2 for convenience.
   */
  struct wpa_channel_info {
  	u32 frequency;
  	enum chan_width chanwidth;
  	int sec_channel;
  	int center_frq1;
  	int center_frq2;
  	u8 seg1_idx;
  };
  
  /**
   * struct beacon_data - Beacon data
   * @head: Head portion of Beacon frame (before TIM IE)
   * @tail: Tail portion of Beacon frame (after TIM IE)
   * @beacon_ies: Extra information element(s) to add into Beacon frames or %NULL
   * @proberesp_ies: Extra information element(s) to add into Probe Response
   *	frames or %NULL
   * @assocresp_ies: Extra information element(s) to add into (Re)Association
   *	Response frames or %NULL
   * @probe_resp: Probe Response frame template
   * @head_len: Length of @head
   * @tail_len: Length of @tail
   * @beacon_ies_len: Length of beacon_ies in octets
   * @proberesp_ies_len: Length of proberesp_ies in octets
   * @proberesp_ies_len: Length of proberesp_ies in octets
   * @probe_resp_len: Length of probe response template (@probe_resp)
   */
  struct beacon_data {
  	u8 *head, *tail;
  	u8 *beacon_ies;
  	u8 *proberesp_ies;
  	u8 *assocresp_ies;
  	u8 *probe_resp;
  
  	size_t head_len, tail_len;
  	size_t beacon_ies_len;
  	size_t proberesp_ies_len;
  	size_t assocresp_ies_len;
  	size_t probe_resp_len;
  };
  
  /**
   * struct csa_settings - Settings for channel switch command
   * @cs_count: Count in Beacon frames (TBTT) to perform the switch
   * @block_tx: 1 - block transmission for CSA period
   * @freq_params: Next channel frequency parameter
   * @beacon_csa: Beacon/probe resp/asooc resp info for CSA period
   * @beacon_after: Next beacon/probe resp/asooc resp info
   * @counter_offset_beacon: Offset to the count field in beacon's tail
   * @counter_offset_presp: Offset to the count field in probe resp.
   */
  struct csa_settings {
  	u8 cs_count;
  	u8 block_tx;
  
  	struct hostapd_freq_params freq_params;
  	struct beacon_data beacon_csa;
  	struct beacon_data beacon_after;
  
  	u16 counter_offset_beacon[2];
  	u16 counter_offset_presp[2];
  };
  
  /* TDLS peer capabilities for send_tdls_mgmt() */
  enum tdls_peer_capability {
  	TDLS_PEER_HT = BIT(0),
  	TDLS_PEER_VHT = BIT(1),
  	TDLS_PEER_WMM = BIT(2),
  };
  
  /* valid info in the wmm_params struct */
  enum wmm_params_valid_info {
  	WMM_PARAMS_UAPSD_QUEUES_INFO = BIT(0),
  };
  
  /**
   * struct wmm_params - WMM parameterss configured for this association
   * @info_bitmap: Bitmap of valid wmm_params info; indicates what fields
   *	of the struct contain valid information.
   * @uapsd_queues: Bitmap of ACs configured for uapsd (valid only if
   *	%WMM_PARAMS_UAPSD_QUEUES_INFO is set)
   */
  struct wmm_params {
  	u8 info_bitmap;
  	u8 uapsd_queues;
  };
  
  #ifdef CONFIG_MACSEC
  struct macsec_init_params {
  	bool always_include_sci;
  	bool use_es;
  	bool use_scb;
  };
  #endif /* CONFIG_MACSEC */
  
  enum drv_br_port_attr {
  	DRV_BR_PORT_ATTR_PROXYARP,
  	DRV_BR_PORT_ATTR_HAIRPIN_MODE,
  };
  
  enum drv_br_net_param {
  	DRV_BR_NET_PARAM_GARP_ACCEPT,
  	DRV_BR_MULTICAST_SNOOPING,
  };
  
  struct drv_acs_params {
  	/* Selected mode (HOSTAPD_MODE_*) */
  	enum hostapd_hw_mode hw_mode;
  
  	/* Indicates whether HT is enabled */
  	int ht_enabled;
  
  	/* Indicates whether HT40 is enabled */
  	int ht40_enabled;
  
  	/* Indicates whether VHT is enabled */
  	int vht_enabled;
  
  	/* Configured ACS channel width */
  	u16 ch_width;
  
  	/* ACS frequency list info */
  	const int *freq_list;
  
  	/* Indicates whether EDMG is enabled */
  	int edmg_enabled;
  };
  
  struct wpa_bss_trans_info {
  	u8 mbo_transition_reason;
  	u8 n_candidates;
  	u8 *bssid;
  };
  
  struct wpa_bss_candidate_info {
  	u8 num;
  	struct candidate_list {
  		u8 bssid[ETH_ALEN];
  		u8 is_accept;
  		u32 reject_reason;
  	} *candidates;
  };
  
  struct wpa_pmkid_params {
  	const u8 *bssid;
  	const u8 *ssid;
  	size_t ssid_len;
  	const u8 *fils_cache_id;
  	const u8 *pmkid;
  	const u8 *pmk;
  	size_t pmk_len;
  	u32 pmk_lifetime;
  	u8 pmk_reauth_threshold;
  };
  
  /* Mask used to specify which connection parameters have to be updated */
  enum wpa_drv_update_connect_params_mask {
  	WPA_DRV_UPDATE_ASSOC_IES	= BIT(0),
  	WPA_DRV_UPDATE_FILS_ERP_INFO	= BIT(1),
  	WPA_DRV_UPDATE_AUTH_TYPE	= BIT(2),
  };
  
  /**
   * struct external_auth - External authentication trigger parameters
   *
   * These are used across the external authentication request and event
   * interfaces.
   * @action: Action type / trigger for external authentication. Only significant
   *	for the event interface.
   * @bssid: BSSID of the peer with which the authentication has to happen. Used
   *	by both the request and event interface.
   * @ssid: SSID of the AP. Used by both the request and event interface.
   * @ssid_len: SSID length in octets.
   * @key_mgmt_suite: AKM suite of the respective authentication. Optional for
   *	the request interface.
   * @status: Status code, %WLAN_STATUS_SUCCESS for successful authentication,
   *	use %WLAN_STATUS_UNSPECIFIED_FAILURE if wpa_supplicant cannot give
   *	the real status code for failures. Used only for the request interface
   *	from user space to the driver.
   * @pmkid: Generated PMKID as part of external auth exchange (e.g., SAE).
   */
  struct external_auth {
  	enum {
  		EXT_AUTH_START,
  		EXT_AUTH_ABORT,
  	} action;
  	const u8 *bssid;
  	const u8 *ssid;
  	size_t ssid_len;
  	unsigned int key_mgmt_suite;
  	u16 status;
  	const u8 *pmkid;
  };
  
  /**
   * struct wpa_driver_ops - Driver interface API definition
   *
   * This structure defines the API that each driver interface needs to implement
   * for core wpa_supplicant code. All driver specific functionality is captured
   * in this wrapper.
   */
  struct wpa_driver_ops {
  	/** Name of the driver interface */
  	const char *name;
  	/** One line description of the driver interface */
  	const char *desc;
  
  	/**
  	 * get_bssid - Get the current BSSID
  	 * @priv: private driver interface data
  	 * @bssid: buffer for BSSID (ETH_ALEN = 6 bytes)
  	 *
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * Query kernel driver for the current BSSID and copy it to bssid.
  	 * Setting bssid to 00:00:00:00:00:00 is recommended if the STA is not
  	 * associated.
  	 */
  	int (*get_bssid)(void *priv, u8 *bssid);
  
  	/**
  	 * get_ssid - Get the current SSID
  	 * @priv: private driver interface data
  	 * @ssid: buffer for SSID (at least 32 bytes)
  	 *
  	 * Returns: Length of the SSID on success, -1 on failure
  	 *
  	 * Query kernel driver for the current SSID and copy it to ssid.
  	 * Returning zero is recommended if the STA is not associated.
  	 *
  	 * Note: SSID is an array of octets, i.e., it is not nul terminated and
  	 * can, at least in theory, contain control characters (including nul)
  	 * and as such, should be processed as binary data, not a printable
  	 * string.
  	 */
  	int (*get_ssid)(void *priv, u8 *ssid);
  
  	/**
  	 * set_key - Configure encryption key
  	 * @priv: private driver interface data
  	 * @params: Key parameters
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * Configure the given key for the kernel driver. If the driver
  	 * supports separate individual keys (4 default keys + 1 individual),
  	 * addr can be used to determine whether the key is default or
  	 * individual. If only 4 keys are supported, the default key with key
  	 * index 0 is used as the individual key. STA must be configured to use
  	 * it as the default Tx key (set_tx is set) and accept Rx for all the
  	 * key indexes. In most cases, WPA uses only key indexes 1 and 2 for
  	 * broadcast keys, so key index 0 is available for this kind of
  	 * configuration.
  	 *
  	 * Please note that TKIP keys include separate TX and RX MIC keys and
  	 * some drivers may expect them in different order than wpa_supplicant
  	 * is using. If the TX/RX keys are swapped, all TKIP encrypted packets
  	 * will trigger Michael MIC errors. This can be fixed by changing the
  	 * order of MIC keys by swapping te bytes 16..23 and 24..31 of the key
  	 * in driver_*.c set_key() implementation, see driver_ndis.c for an
  	 * example on how this can be done.
  	 */
  	int (*set_key)(void *priv, struct wpa_driver_set_key_params *params);
  
  	/**
  	 * init - Initialize driver interface
  	 * @ctx: context to be used when calling wpa_supplicant functions,
  	 * e.g., wpa_supplicant_event()
  	 * @ifname: interface name, e.g., wlan0
  	 *
  	 * Returns: Pointer to private data, %NULL on failure
  	 *
  	 * Initialize driver interface, including event processing for kernel
  	 * driver events (e.g., associated, scan results, Michael MIC failure).
  	 * This function can allocate a private configuration data area for
  	 * @ctx, file descriptor, interface name, etc. information that may be
  	 * needed in future driver operations. If this is not used, non-NULL
  	 * value will need to be returned because %NULL is used to indicate
  	 * failure. The returned value will be used as 'void *priv' data for
  	 * all other driver_ops functions.
  	 *
  	 * The main event loop (eloop.c) of wpa_supplicant can be used to
  	 * register callback for read sockets (eloop_register_read_sock()).
  	 *
  	 * See below for more information about events and
  	 * wpa_supplicant_event() function.
  	 */
  	void * (*init)(void *ctx, const char *ifname);
  
  	/**
  	 * deinit - Deinitialize driver interface
  	 * @priv: private driver interface data from init()
  	 *
  	 * Shut down driver interface and processing of driver events. Free
  	 * private data buffer if one was allocated in init() handler.
  	 */
  	void (*deinit)(void *priv);
  
  	/**
  	 * set_param - Set driver configuration parameters
  	 * @priv: private driver interface data from init()
  	 * @param: driver specific configuration parameters
  	 *
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * Optional handler for notifying driver interface about configuration
  	 * parameters (driver_param).
  	 */
  	int (*set_param)(void *priv, const char *param);
  
  	/**
  	 * set_countermeasures - Enable/disable TKIP countermeasures
  	 * @priv: private driver interface data
  	 * @enabled: 1 = countermeasures enabled, 0 = disabled
  	 *
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * Configure TKIP countermeasures. When these are enabled, the driver
  	 * should drop all received and queued frames that are using TKIP.
  	 */
  	int (*set_countermeasures)(void *priv, int enabled);
  
  	/**
  	 * deauthenticate - Request driver to deauthenticate
  	 * @priv: private driver interface data
  	 * @addr: peer address (BSSID of the AP)
  	 * @reason_code: 16-bit reason code to be sent in the deauthentication
  	 *	frame
  	 *
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*deauthenticate)(void *priv, const u8 *addr, u16 reason_code);
  
  	/**
  	 * associate - Request driver to associate
  	 * @priv: private driver interface data
  	 * @params: association parameters
  	 *
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*associate)(void *priv,
  			 struct wpa_driver_associate_params *params);
  
  	/**
  	 * add_pmkid - Add PMKSA cache entry to the driver
  	 * @priv: private driver interface data
  	 * @params: PMKSA parameters
  	 *
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * This function is called when a new PMK is received, as a result of
  	 * either normal authentication or RSN pre-authentication. The PMKSA
  	 * parameters are either a set of bssid, pmkid, and pmk; or a set of
  	 * ssid, fils_cache_id, pmkid, and pmk.
  	 *
  	 * If the driver generates RSN IE, i.e., it does not use wpa_ie in
  	 * associate(), add_pmkid() can be used to add new PMKSA cache entries
  	 * in the driver. If the driver uses wpa_ie from wpa_supplicant, this
  	 * driver_ops function does not need to be implemented. Likewise, if
  	 * the driver does not support WPA, this function is not needed.
  	 */
  	int (*add_pmkid)(void *priv, struct wpa_pmkid_params *params);
  
  	/**
  	 * remove_pmkid - Remove PMKSA cache entry to the driver
  	 * @priv: private driver interface data
  	 * @params: PMKSA parameters
  	 *
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * This function is called when the supplicant drops a PMKSA cache
  	 * entry for any reason. The PMKSA parameters are either a set of
  	 * bssid and pmkid; or a set of ssid, fils_cache_id, and pmkid.
  	 *
  	 * If the driver generates RSN IE, i.e., it does not use wpa_ie in
  	 * associate(), remove_pmkid() can be used to synchronize PMKSA caches
  	 * between the driver and wpa_supplicant. If the driver uses wpa_ie
  	 * from wpa_supplicant, this driver_ops function does not need to be
  	 * implemented. Likewise, if the driver does not support WPA, this
  	 * function is not needed.
  	 */
  	int (*remove_pmkid)(void *priv, struct wpa_pmkid_params *params);
  
  	/**
  	 * flush_pmkid - Flush PMKSA cache
  	 * @priv: private driver interface data
  	 *
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * This function is called when the supplicant drops all PMKSA cache
  	 * entries for any reason.
  	 *
  	 * If the driver generates RSN IE, i.e., it does not use wpa_ie in
  	 * associate(), remove_pmkid() can be used to synchronize PMKSA caches
  	 * between the driver and wpa_supplicant. If the driver uses wpa_ie
  	 * from wpa_supplicant, this driver_ops function does not need to be
  	 * implemented. Likewise, if the driver does not support WPA, this
  	 * function is not needed.
  	 */
  	int (*flush_pmkid)(void *priv);
  
  	/**
  	 * get_capa - Get driver capabilities
  	 * @priv: private driver interface data
  	 *
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * Get driver/firmware/hardware capabilities.
  	 */
  	int (*get_capa)(void *priv, struct wpa_driver_capa *capa);
  
  	/**
  	 * poll - Poll driver for association information
  	 * @priv: private driver interface data
  	 *
  	 * This is an option callback that can be used when the driver does not
  	 * provide event mechanism for association events. This is called when
  	 * receiving WPA EAPOL-Key messages that require association
  	 * information. The driver interface is supposed to generate associnfo
  	 * event before returning from this callback function. In addition, the
  	 * driver interface should generate an association event after having
  	 * sent out associnfo.
  	 */
  	void (*poll)(void *priv);
  
  	/**
  	 * get_ifindex - Get interface index
  	 * @priv: private driver interface data
  	 *
  	 * Returns: Interface index
  	 */
  	unsigned int (*get_ifindex)(void *priv);
  
  	/**
  	 * get_ifname - Get interface name
  	 * @priv: private driver interface data
  	 *
  	 * Returns: Pointer to the interface name. This can differ from the
  	 * interface name used in init() call. Init() is called first.
  	 *
  	 * This optional function can be used to allow the driver interface to
  	 * replace the interface name with something else, e.g., based on an
  	 * interface mapping from a more descriptive name.
  	 */
  	const char * (*get_ifname)(void *priv);
  
  	/**
  	 * get_mac_addr - Get own MAC address
  	 * @priv: private driver interface data
  	 *
  	 * Returns: Pointer to own MAC address or %NULL on failure
  	 *
  	 * This optional function can be used to get the own MAC address of the
  	 * device from the driver interface code. This is only needed if the
  	 * l2_packet implementation for the OS does not provide easy access to
  	 * a MAC address. */
  	const u8 * (*get_mac_addr)(void *priv);
  
  	/**
  	 * set_operstate - Sets device operating state to DORMANT or UP
  	 * @priv: private driver interface data
  	 * @state: 0 = dormant, 1 = up
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * This is an optional function that can be used on operating systems
  	 * that support a concept of controlling network device state from user
  	 * space applications. This function, if set, gets called with
  	 * state = 1 when authentication has been completed and with state = 0
  	 * when connection is lost.
  	 */
  	int (*set_operstate)(void *priv, int state);
  
  	/**
  	 * mlme_setprotection - MLME-SETPROTECTION.request primitive
  	 * @priv: Private driver interface data
  	 * @addr: Address of the station for which to set protection (may be
  	 * %NULL for group keys)
  	 * @protect_type: MLME_SETPROTECTION_PROTECT_TYPE_*
  	 * @key_type: MLME_SETPROTECTION_KEY_TYPE_*
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * This is an optional function that can be used to set the driver to
  	 * require protection for Tx and/or Rx frames. This uses the layer
  	 * interface defined in IEEE 802.11i-2004 clause 10.3.22.1
  	 * (MLME-SETPROTECTION.request). Many drivers do not use explicit
  	 * set protection operation; instead, they set protection implicitly
  	 * based on configured keys.
  	 */
  	int (*mlme_setprotection)(void *priv, const u8 *addr, int protect_type,
  				  int key_type);
  
  	/**
  	 * get_hw_feature_data - Get hardware support data (channels and rates)
  	 * @priv: Private driver interface data
  	 * @num_modes: Variable for returning the number of returned modes
  	 * flags: Variable for returning hardware feature flags
  	 * @dfs: Variable for returning DFS region (HOSTAPD_DFS_REGION_*)
  	 * Returns: Pointer to allocated hardware data on success or %NULL on
  	 * failure. Caller is responsible for freeing this.
  	 */
  	struct hostapd_hw_modes * (*get_hw_feature_data)(void *priv,
  							 u16 *num_modes,
  							 u16 *flags, u8 *dfs);
  
  	/**
  	 * send_mlme - Send management frame from MLME
  	 * @priv: Private driver interface data
  	 * @data: IEEE 802.11 management frame with IEEE 802.11 header
  	 * @data_len: Size of the management frame
  	 * @noack: Do not wait for this frame to be acked (disable retries)
  	 * @freq: Frequency (in MHz) to send the frame on, or 0 to let the
  	 * driver decide
  	 * @csa_offs: Array of CSA offsets or %NULL
  	 * @csa_offs_len: Number of elements in csa_offs
  	 * @no_encrypt: Do not encrypt frame even if appropriate key exists
  	 *	(used only for testing purposes)
  	 * @wait: Time to wait off-channel for a response (in ms), or zero
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*send_mlme)(void *priv, const u8 *data, size_t data_len,
  			 int noack, unsigned int freq, const u16 *csa_offs,
  			 size_t csa_offs_len, int no_encrypt,
  			 unsigned int wait);
  
  	/**
  	 * update_ft_ies - Update FT (IEEE 802.11r) IEs
  	 * @priv: Private driver interface data
  	 * @md: Mobility domain (2 octets) (also included inside ies)
  	 * @ies: FT IEs (MDIE, FTIE, ...) or %NULL to remove IEs
  	 * @ies_len: Length of FT IEs in bytes
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * The supplicant uses this callback to let the driver know that keying
  	 * material for FT is available and that the driver can use the
  	 * provided IEs in the next message in FT authentication sequence.
  	 *
  	 * This function is only needed for driver that support IEEE 802.11r
  	 * (Fast BSS Transition).
  	 */
  	int (*update_ft_ies)(void *priv, const u8 *md, const u8 *ies,
  			     size_t ies_len);
  
  	/**
  	 * get_scan_results2 - Fetch the latest scan results
  	 * @priv: private driver interface data
  	 *
  	 * Returns: Allocated buffer of scan results (caller is responsible for
  	 * freeing the data structure) on success, NULL on failure
  	 */
  	 struct wpa_scan_results * (*get_scan_results2)(void *priv);
  
  	/**
  	 * set_country - Set country
  	 * @priv: Private driver interface data
  	 * @alpha2: country to which to switch to
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * This function is for drivers which support some form
  	 * of setting a regulatory domain.
  	 */
  	int (*set_country)(void *priv, const char *alpha2);
  
  	/**
  	 * get_country - Get country
  	 * @priv: Private driver interface data
  	 * @alpha2: Buffer for returning country code (at least 3 octets)
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*get_country)(void *priv, char *alpha2);
  
  	/**
  	 * global_init - Global driver initialization
  	 * @ctx: wpa_global pointer
  	 * Returns: Pointer to private data (global), %NULL on failure
  	 *
  	 * This optional function is called to initialize the driver wrapper
  	 * for global data, i.e., data that applies to all interfaces. If this
  	 * function is implemented, global_deinit() will also need to be
  	 * implemented to free the private data. The driver will also likely
  	 * use init2() function instead of init() to get the pointer to global
  	 * data available to per-interface initializer.
  	 */
  	void * (*global_init)(void *ctx);
  
  	/**
  	 * global_deinit - Global driver deinitialization
  	 * @priv: private driver global data from global_init()
  	 *
  	 * Terminate any global driver related functionality and free the
  	 * global data structure.
  	 */
  	void (*global_deinit)(void *priv);
  
  	/**
  	 * init2 - Initialize driver interface (with global data)
  	 * @ctx: context to be used when calling wpa_supplicant functions,
  	 * e.g., wpa_supplicant_event()
  	 * @ifname: interface name, e.g., wlan0
  	 * @global_priv: private driver global data from global_init()
  	 * Returns: Pointer to private data, %NULL on failure
  	 *
  	 * This function can be used instead of init() if the driver wrapper
  	 * uses global data.
  	 */
  	void * (*init2)(void *ctx, const char *ifname, void *global_priv);
  
  	/**
  	 * get_interfaces - Get information about available interfaces
  	 * @global_priv: private driver global data from global_init()
  	 * Returns: Allocated buffer of interface information (caller is
  	 * responsible for freeing the data structure) on success, NULL on
  	 * failure
  	 */
  	struct wpa_interface_info * (*get_interfaces)(void *global_priv);
  
  	/**
  	 * scan2 - Request the driver to initiate scan
  	 * @priv: private driver interface data
  	 * @params: Scan parameters
  	 *
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * Once the scan results are ready, the driver should report scan
  	 * results event for wpa_supplicant which will eventually request the
  	 * results with wpa_driver_get_scan_results2().
  	 */
  	int (*scan2)(void *priv, struct wpa_driver_scan_params *params);
  
  	/**
  	 * authenticate - Request driver to authenticate
  	 * @priv: private driver interface data
  	 * @params: authentication parameters
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * This is an optional function that can be used with drivers that
  	 * support separate authentication and association steps, i.e., when
  	 * wpa_supplicant can act as the SME. If not implemented, associate()
  	 * function is expected to take care of IEEE 802.11 authentication,
  	 * too.
  	 */
  	int (*authenticate)(void *priv,
  			    struct wpa_driver_auth_params *params);
  
  	/**
  	 * set_ap - Set Beacon and Probe Response information for AP mode
  	 * @priv: Private driver interface data
  	 * @params: Parameters to use in AP mode
  	 *
  	 * This function is used to configure Beacon template and/or extra IEs
  	 * to add for Beacon and Probe Response frames for the driver in
  	 * AP mode. The driver is responsible for building the full Beacon
  	 * frame by concatenating the head part with TIM IE generated by the
  	 * driver/firmware and finishing with the tail part. Depending on the
  	 * driver architectue, this can be done either by using the full
  	 * template or the set of additional IEs (e.g., WPS and P2P IE).
  	 * Similarly, Probe Response processing depends on the driver design.
  	 * If the driver (or firmware) takes care of replying to Probe Request
  	 * frames, the extra IEs provided here needs to be added to the Probe
  	 * Response frames.
  	 *
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*set_ap)(void *priv, struct wpa_driver_ap_params *params);
  
  	/**
  	 * set_acl - Set ACL in AP mode
  	 * @priv: Private driver interface data
  	 * @params: Parameters to configure ACL
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * This is used only for the drivers which support MAC address ACL.
  	 */
  	int (*set_acl)(void *priv, struct hostapd_acl_params *params);
  
  	/**
  	 * hapd_init - Initialize driver interface (hostapd only)
  	 * @hapd: Pointer to hostapd context
  	 * @params: Configuration for the driver wrapper
  	 * Returns: Pointer to private data, %NULL on failure
  	 *
  	 * This function is used instead of init() or init2() when the driver
  	 * wrapper is used with hostapd.
  	 */
  	void * (*hapd_init)(struct hostapd_data *hapd,
  			    struct wpa_init_params *params);
  
  	/**
  	 * hapd_deinit - Deinitialize driver interface (hostapd only)
  	 * @priv: Private driver interface data from hapd_init()
  	 */
  	void (*hapd_deinit)(void *priv);
  
  	/**
  	 * set_ieee8021x - Enable/disable IEEE 802.1X support (AP only)
  	 * @priv: Private driver interface data
  	 * @params: BSS parameters
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * This is an optional function to configure the kernel driver to
  	 * enable/disable IEEE 802.1X support and set WPA/WPA2 parameters. This
  	 * can be left undefined (set to %NULL) if IEEE 802.1X support is
  	 * always enabled and the driver uses set_ap() to set WPA/RSN IE
  	 * for Beacon frames.
  	 *
  	 * DEPRECATED - use set_ap() instead
  	 */
  	int (*set_ieee8021x)(void *priv, struct wpa_bss_params *params);
  
  	/**
  	 * set_privacy - Enable/disable privacy (AP only)
  	 * @priv: Private driver interface data
  	 * @enabled: 1 = privacy enabled, 0 = disabled
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * This is an optional function to configure privacy field in the
  	 * kernel driver for Beacon frames. This can be left undefined (set to
  	 * %NULL) if the driver uses the Beacon template from set_ap().
  	 *
  	 * DEPRECATED - use set_ap() instead
  	 */
  	int (*set_privacy)(void *priv, int enabled);
  
  	/**
  	 * get_seqnum - Fetch the current TSC/packet number (AP only)
  	 * @ifname: The interface name (main or virtual)
  	 * @priv: Private driver interface data
  	 * @addr: MAC address of the station or %NULL for group keys
  	 * @idx: Key index
  	 * @seq: Buffer for returning the latest used TSC/packet number
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * This function is used to fetch the last used TSC/packet number for
  	 * a TKIP, CCMP, GCMP, or BIP/IGTK key. It is mainly used with group
  	 * keys, so there is no strict requirement on implementing support for
  	 * unicast keys (i.e., addr != %NULL).
  	 */
  	int (*get_seqnum)(const char *ifname, void *priv, const u8 *addr,
  			  int idx, u8 *seq);
  
  	/**
  	 * flush - Flush all association stations (AP only)
  	 * @priv: Private driver interface data
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * This function requests the driver to disassociate all associated
  	 * stations. This function does not need to be implemented if the
  	 * driver does not process association frames internally.
  	 */
  	int (*flush)(void *priv);
  
  	/**
  	 * set_generic_elem - Add IEs into Beacon/Probe Response frames (AP)
  	 * @priv: Private driver interface data
  	 * @elem: Information elements
  	 * @elem_len: Length of the elem buffer in octets
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * This is an optional function to add information elements in the
  	 * kernel driver for Beacon and Probe Response frames. This can be left
  	 * undefined (set to %NULL) if the driver uses the Beacon template from
  	 * set_ap().
  	 *
  	 * DEPRECATED - use set_ap() instead
  	 */
  	int (*set_generic_elem)(void *priv, const u8 *elem, size_t elem_len);
  
  	/**
  	 * read_sta_data - Fetch station data
  	 * @priv: Private driver interface data
  	 * @data: Buffer for returning station information
  	 * @addr: MAC address of the station
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*read_sta_data)(void *priv, struct hostap_sta_driver_data *data,
  			     const u8 *addr);
  
  	/**
  	 * tx_control_port - Send a frame over the 802.1X controlled port
  	 * @priv: Private driver interface data
  	 * @dest: Destination MAC address
  	 * @proto: Ethertype in host byte order
  	 * @buf: Frame payload starting from IEEE 802.1X header
  	 * @len: Frame payload length
  	 * @no_encrypt: Do not encrypt frame
  	 *
  	 * Returns 0 on success, else an error
  	 *
  	 * This is like a normal Ethernet send except that the driver is aware
  	 * (by other means than the Ethertype) that this frame is special,
  	 * and more importantly it gains an ordering between the transmission of
  	 * the frame and other driver management operations such as key
  	 * installations. This can be used to work around known limitations in
  	 * IEEE 802.11 protocols such as race conditions between rekeying 4-way
  	 * handshake message 4/4 and a PTK being overwritten.
  	 *
  	 * This function is only used for a given interface if the driver
  	 * instance reports WPA_DRIVER_FLAGS_CONTROL_PORT capability. Otherwise,
  	 * API users will fall back to sending the frame via a normal socket.
  	 */
  	int (*tx_control_port)(void *priv, const u8 *dest,
  			       u16 proto, const u8 *buf, size_t len,
  			       int no_encrypt);
  
  	/**
  	 * hapd_send_eapol - Send an EAPOL packet (AP only)
  	 * @priv: private driver interface data
  	 * @addr: Destination MAC address
  	 * @data: EAPOL packet starting with IEEE 802.1X header
  	 * @data_len: Length of the EAPOL packet in octets
  	 * @encrypt: Whether the frame should be encrypted
  	 * @own_addr: Source MAC address
  	 * @flags: WPA_STA_* flags for the destination station
  	 *
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*hapd_send_eapol)(void *priv, const u8 *addr, const u8 *data,
  			       size_t data_len, int encrypt,
  			       const u8 *own_addr, u32 flags);
  
  	/**
  	 * Supports data tx status?
  	 */
  	int (*supports_data_tx_status)(void *priv);
  
  	/**
  	 * send_eapol - Send an EAPOL packet (STA only)
  	 * @priv: private driver interface data
  	 * @addr: Destination MAC address
  	 * @data: EAPOL packet starting with IEEE 802.1X header
  	 * @data_len: Length of the EAPOL packet in octets
  	 *
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*send_eapol)(void *priv, const u8 *addr, const u8 *data,
  			       size_t data_len);
  
  	/**
  	 * sta_deauth - Deauthenticate a station (AP only)
  	 * @priv: Private driver interface data
  	 * @own_addr: Source address and BSSID for the Deauthentication frame
  	 * @addr: MAC address of the station to deauthenticate
  	 * @reason: Reason code for the Deauthentiation frame
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * This function requests a specific station to be deauthenticated and
  	 * a Deauthentication frame to be sent to it.
  	 */
  	int (*sta_deauth)(void *priv, const u8 *own_addr, const u8 *addr,
  			  u16 reason);
  
  	/**
  	 * sta_disassoc - Disassociate a station (AP only)
  	 * @priv: Private driver interface data
  	 * @own_addr: Source address and BSSID for the Disassociation frame
  	 * @addr: MAC address of the station to disassociate
  	 * @reason: Reason code for the Disassociation frame
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * This function requests a specific station to be disassociated and
  	 * a Disassociation frame to be sent to it.
  	 */
  	int (*sta_disassoc)(void *priv, const u8 *own_addr, const u8 *addr,
  			    u16 reason);
  
  	/**
  	 * sta_remove - Remove a station entry (AP only)
  	 * @priv: Private driver interface data
  	 * @addr: MAC address of the station to be removed
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*sta_remove)(void *priv, const u8 *addr);
  
  	/**
  	 * hapd_get_ssid - Get the current SSID (AP only)
  	 * @priv: Private driver interface data
  	 * @buf: Buffer for returning the SSID
  	 * @len: Maximum length of the buffer
  	 * Returns: Length of the SSID on success, -1 on failure
  	 *
  	 * This function need not be implemented if the driver uses Beacon
  	 * template from set_ap() and does not reply to Probe Request frames.
  	 */
  	int (*hapd_get_ssid)(void *priv, u8 *buf, int len);
  
  	/**
  	 * hapd_set_ssid - Set SSID (AP only)
  	 * @priv: Private driver interface data
  	 * @buf: SSID
  	 * @len: Length of the SSID in octets
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * DEPRECATED - use set_ap() instead
  	 */
  	int (*hapd_set_ssid)(void *priv, const u8 *buf, int len);
  
  	/**
  	 * hapd_set_countermeasures - Enable/disable TKIP countermeasures (AP)
  	 * @priv: Private driver interface data
  	 * @enabled: 1 = countermeasures enabled, 0 = disabled
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * This need not be implemented if the driver does not take care of
  	 * association processing.
  	 */
  	int (*hapd_set_countermeasures)(void *priv, int enabled);
  
  	/**
  	 * sta_add - Add a station entry
  	 * @priv: Private driver interface data
  	 * @params: Station parameters
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * This function is used to add or set (params->set 1) a station
  	 * entry in the driver. Adding STA entries is used only if the driver
  	 * does not take care of association processing.
  	 *
  	 * With drivers that don't support full AP client state, this function
  	 * is used to add a station entry to the driver once the station has
  	 * completed association.
  	 *
  	 * With TDLS, this function is used to add or set (params->set 1)
  	 * TDLS peer entries (even with drivers that do not support full AP
  	 * client state).
  	 */
  	int (*sta_add)(void *priv, struct hostapd_sta_add_params *params);
  
  	/**
  	 * get_inact_sec - Get station inactivity duration (AP only)
  	 * @priv: Private driver interface data
  	 * @addr: Station address
  	 * Returns: Number of seconds station has been inactive, -1 on failure
  	 */
  	int (*get_inact_sec)(void *priv, const u8 *addr);
  
  	/**
  	 * sta_clear_stats - Clear station statistics (AP only)
  	 * @priv: Private driver interface data
  	 * @addr: Station address
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*sta_clear_stats)(void *priv, const u8 *addr);
  
  	/**
  	 * set_freq - Set channel/frequency (AP only)
  	 * @priv: Private driver interface data
  	 * @freq: Channel parameters
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*set_freq)(void *priv, struct hostapd_freq_params *freq);
  
  	/**
  	 * set_rts - Set RTS threshold
  	 * @priv: Private driver interface data
  	 * @rts: RTS threshold in octets
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*set_rts)(void *priv, int rts);
  
  	/**
  	 * set_frag - Set fragmentation threshold
  	 * @priv: Private driver interface data
  	 * @frag: Fragmentation threshold in octets
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*set_frag)(void *priv, int frag);
  
  	/**
  	 * sta_set_flags - Set station flags (AP only)
  	 * @priv: Private driver interface data
  	 * @addr: Station address
  	 * @total_flags: Bitmap of all WPA_STA_* flags currently set
  	 * @flags_or: Bitmap of WPA_STA_* flags to add
  	 * @flags_and: Bitmap of WPA_STA_* flags to us as a mask
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*sta_set_flags)(void *priv, const u8 *addr,
  			     unsigned int total_flags, unsigned int flags_or,
  			     unsigned int flags_and);
  
  	/**
  	 * sta_set_airtime_weight - Set station airtime weight (AP only)
  	 * @priv: Private driver interface data
  	 * @addr: Station address
  	 * @weight: New weight for station airtime assignment
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*sta_set_airtime_weight)(void *priv, const u8 *addr,
  				      unsigned int weight);
  
  	/**
  	 * set_tx_queue_params - Set TX queue parameters
  	 * @priv: Private driver interface data
  	 * @queue: Queue number (0 = VO, 1 = VI, 2 = BE, 3 = BK)
  	 * @aifs: AIFS
  	 * @cw_min: cwMin
  	 * @cw_max: cwMax
  	 * @burst_time: Maximum length for bursting in 0.1 msec units
  	 */
  	int (*set_tx_queue_params)(void *priv, int queue, int aifs, int cw_min,
  				   int cw_max, int burst_time);
  
  	/**
  	 * if_add - Add a virtual interface
  	 * @priv: Private driver interface data
  	 * @type: Interface type
  	 * @ifname: Interface name for the new virtual interface
  	 * @addr: Local address to use for the interface or %NULL to use the
  	 *	parent interface address
  	 * @bss_ctx: BSS context for %WPA_IF_AP_BSS interfaces
  	 * @drv_priv: Pointer for overwriting the driver context or %NULL if
  	 *	not allowed (applies only to %WPA_IF_AP_BSS type)
  	 * @force_ifname: Buffer for returning an interface name that the
  	 *	driver ended up using if it differs from the requested ifname
  	 * @if_addr: Buffer for returning the allocated interface address
  	 *	(this may differ from the requested addr if the driver cannot
  	 *	change interface address)
  	 * @bridge: Bridge interface to use or %NULL if no bridge configured
  	 * @use_existing: Whether to allow existing interface to be used
  	 * @setup_ap: Whether to setup AP for %WPA_IF_AP_BSS interfaces
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*if_add)(void *priv, enum wpa_driver_if_type type,
  		      const char *ifname, const u8 *addr, void *bss_ctx,
  		      void **drv_priv, char *force_ifname, u8 *if_addr,
  		      const char *bridge, int use_existing, int setup_ap);
  
  	/**
  	 * if_remove - Remove a virtual interface
  	 * @priv: Private driver interface data
  	 * @type: Interface type
  	 * @ifname: Interface name of the virtual interface to be removed
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*if_remove)(void *priv, enum wpa_driver_if_type type,
  			 const char *ifname);
  
  	/**
  	 * set_sta_vlan - Bind a station into a specific interface (AP only)
  	 * @priv: Private driver interface data
  	 * @ifname: Interface (main or virtual BSS or VLAN)
  	 * @addr: MAC address of the associated station
  	 * @vlan_id: VLAN ID
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * This function is used to bind a station to a specific virtual
  	 * interface. It is only used if when virtual interfaces are supported,
  	 * e.g., to assign stations to different VLAN interfaces based on
  	 * information from a RADIUS server. This allows separate broadcast
  	 * domains to be used with a single BSS.
  	 */
  	int (*set_sta_vlan)(void *priv, const u8 *addr, const char *ifname,
  			    int vlan_id);
  
  	/**
  	 * commit - Optional commit changes handler (AP only)
  	 * @priv: driver private data
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * This optional handler function can be registered if the driver
  	 * interface implementation needs to commit changes (e.g., by setting
  	 * network interface up) at the end of initial configuration. If set,
  	 * this handler will be called after initial setup has been completed.
  	 */
  	int (*commit)(void *priv);
  
  	/**
  	 * set_radius_acl_auth - Notification of RADIUS ACL change
  	 * @priv: Private driver interface data
  	 * @mac: MAC address of the station
  	 * @accepted: Whether the station was accepted
  	 * @session_timeout: Session timeout for the station
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*set_radius_acl_auth)(void *priv, const u8 *mac, int accepted,
  				   u32 session_timeout);
  
  	/**
  	 * set_radius_acl_expire - Notification of RADIUS ACL expiration
  	 * @priv: Private driver interface data
  	 * @mac: MAC address of the station
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*set_radius_acl_expire)(void *priv, const u8 *mac);
  
  	/**
  	 * set_ap_wps_ie - Add WPS IE(s) into Beacon/Probe Response frames (AP)
  	 * @priv: Private driver interface data
  	 * @beacon: WPS IE(s) for Beacon frames or %NULL to remove extra IE(s)
  	 * @proberesp: WPS IE(s) for Probe Response frames or %NULL to remove
  	 *	extra IE(s)
  	 * @assocresp: WPS IE(s) for (Re)Association Response frames or %NULL
  	 *	to remove extra IE(s)
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * This is an optional function to add WPS IE in the kernel driver for
  	 * Beacon and Probe Response frames. This can be left undefined (set
  	 * to %NULL) if the driver uses the Beacon template from set_ap()
  	 * and does not process Probe Request frames. If the driver takes care
  	 * of (Re)Association frame processing, the assocresp buffer includes
  	 * WPS IE(s) that need to be added to (Re)Association Response frames
  	 * whenever a (Re)Association Request frame indicated use of WPS.
  	 *
  	 * This will also be used to add P2P IE(s) into Beacon/Probe Response
  	 * frames when operating as a GO. The driver is responsible for adding
  	 * timing related attributes (e.g., NoA) in addition to the IEs
  	 * included here by appending them after these buffers. This call is
  	 * also used to provide Probe Response IEs for P2P Listen state
  	 * operations for drivers that generate the Probe Response frames
  	 * internally.
  	 *
  	 * DEPRECATED - use set_ap() instead
  	 */
  	int (*set_ap_wps_ie)(void *priv, const struct wpabuf *beacon,
  			     const struct wpabuf *proberesp,
  			     const struct wpabuf *assocresp);
  
  	/**
  	 * set_supp_port - Set IEEE 802.1X Supplicant Port status
  	 * @priv: Private driver interface data
  	 * @authorized: Whether the port is authorized
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*set_supp_port)(void *priv, int authorized);
  
  	/**
  	 * set_wds_sta - Bind a station into a 4-address WDS (AP only)
  	 * @priv: Private driver interface data
  	 * @addr: MAC address of the associated station
  	 * @aid: Association ID
  	 * @val: 1 = bind to 4-address WDS; 0 = unbind
  	 * @bridge_ifname: Bridge interface to use for the WDS station or %NULL
  	 *	to indicate that bridge is not to be used
  	 * @ifname_wds: Buffer to return the interface name for the new WDS
  	 *	station or %NULL to indicate name is not returned.
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*set_wds_sta)(void *priv, const u8 *addr, int aid, int val,
  			   const char *bridge_ifname, char *ifname_wds);
  
  	/**
  	 * send_action - Transmit an Action frame
  	 * @priv: Private driver interface data
  	 * @freq: Frequency (in MHz) of the channel
  	 * @wait: Time to wait off-channel for a response (in ms), or zero
  	 * @dst: Destination MAC address (Address 1)
  	 * @src: Source MAC address (Address 2)
  	 * @bssid: BSSID (Address 3)
  	 * @data: Frame body
  	 * @data_len: data length in octets
  	 @ @no_cck: Whether CCK rates must not be used to transmit this frame
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * This command can be used to request the driver to transmit an action
  	 * frame to the specified destination.
  	 *
  	 * If the %WPA_DRIVER_FLAGS_OFFCHANNEL_TX flag is set, the frame will
  	 * be transmitted on the given channel and the device will wait for a
  	 * response on that channel for the given wait time.
  	 *
  	 * If the flag is not set, the wait time will be ignored. In this case,
  	 * if a remain-on-channel duration is in progress, the frame must be
  	 * transmitted on that channel; alternatively the frame may be sent on
  	 * the current operational channel (if in associated state in station
  	 * mode or while operating as an AP.)
  	 *
  	 * If @src differs from the device MAC address, use of a random
  	 * transmitter address is requested for this message exchange.
  	 */
  	int (*send_action)(void *priv, unsigned int freq, unsigned int wait,
  			   const u8 *dst, const u8 *src, const u8 *bssid,
  			   const u8 *data, size_t data_len, int no_cck);
  
  	/**
  	 * send_action_cancel_wait - Cancel action frame TX wait
  	 * @priv: Private driver interface data
  	 *
  	 * This command cancels the wait time associated with sending an action
  	 * frame. It is only available when %WPA_DRIVER_FLAGS_OFFCHANNEL_TX is
  	 * set in the driver flags.
  	 */
  	void (*send_action_cancel_wait)(void *priv);
  
  	/**
  	 * remain_on_channel - Remain awake on a channel
  	 * @priv: Private driver interface data
  	 * @freq: Frequency (in MHz) of the channel
  	 * @duration: Duration in milliseconds
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * This command is used to request the driver to remain awake on the
  	 * specified channel for the specified duration and report received
  	 * Action frames with EVENT_RX_MGMT events. Optionally, received
  	 * Probe Request frames may also be requested to be reported by calling
  	 * probe_req_report(). These will be reported with EVENT_RX_PROBE_REQ.
  	 *
  	 * The driver may not be at the requested channel when this function
  	 * returns, i.e., the return code is only indicating whether the
  	 * request was accepted. The caller will need to wait until the
  	 * EVENT_REMAIN_ON_CHANNEL event indicates that the driver has
  	 * completed the channel change. This may take some time due to other
  	 * need for the radio and the caller should be prepared to timing out
  	 * its wait since there are no guarantees on when this request can be
  	 * executed.
  	 */
  	int (*remain_on_channel)(void *priv, unsigned int freq,
  				 unsigned int duration);
  
  	/**
  	 * cancel_remain_on_channel - Cancel remain-on-channel operation
  	 * @priv: Private driver interface data
  	 *
  	 * This command can be used to cancel a remain-on-channel operation
  	 * before its originally requested duration has passed. This could be
  	 * used, e.g., when remain_on_channel() is used to request extra time
  	 * to receive a response to an Action frame and the response is
  	 * received when there is still unneeded time remaining on the
  	 * remain-on-channel operation.
  	 */
  	int (*cancel_remain_on_channel)(void *priv);
  
  	/**
  	 * probe_req_report - Request Probe Request frames to be indicated
  	 * @priv: Private driver interface data
  	 * @report: Whether to report received Probe Request frames
  	 * Returns: 0 on success, -1 on failure (or if not supported)
  	 *
  	 * This command can be used to request the driver to indicate when
  	 * Probe Request frames are received with EVENT_RX_PROBE_REQ events.
  	 * Since this operation may require extra resources, e.g., due to less
  	 * optimal hardware/firmware RX filtering, many drivers may disable
  	 * Probe Request reporting at least in station mode. This command is
  	 * used to notify the driver when the Probe Request frames need to be
  	 * reported, e.g., during remain-on-channel operations.
  	 */
  	int (*probe_req_report)(void *priv, int report);
  
  	/**
  	 * deinit_ap - Deinitialize AP mode
  	 * @priv: Private driver interface data
  	 * Returns: 0 on success, -1 on failure (or if not supported)
  	 *
  	 * This optional function can be used to disable AP mode related
  	 * configuration. If the interface was not dynamically added,
  	 * change the driver mode to station mode to allow normal station
  	 * operations like scanning to be completed.
  	 */
  	int (*deinit_ap)(void *priv);
  
  	/**
  	 * deinit_p2p_cli - Deinitialize P2P client mode
  	 * @priv: Private driver interface data
  	 * Returns: 0 on success, -1 on failure (or if not supported)
  	 *
  	 * This optional function can be used to disable P2P client mode. If the
  	 * interface was not dynamically added, change the interface type back
  	 * to station mode.
  	 */
  	int (*deinit_p2p_cli)(void *priv);
  
  	/**
  	 * suspend - Notification on system suspend/hibernate event
  	 * @priv: Private driver interface data
  	 */
  	void (*suspend)(void *priv);
  
  	/**
  	 * resume - Notification on system resume/thaw event
  	 * @priv: Private driver interface data
  	 */
  	void (*resume)(void *priv);
  
  	/**
  	 * signal_monitor - Set signal monitoring parameters
  	 * @priv: Private driver interface data
  	 * @threshold: Threshold value for signal change events; 0 = disabled
  	 * @hysteresis: Minimum change in signal strength before indicating a
  	 *	new event
  	 * Returns: 0 on success, -1 on failure (or if not supported)
  	 *
  	 * This function can be used to configure monitoring of signal strength
  	 * with the current AP. Whenever signal strength drops below the
  	 * %threshold value or increases above it, EVENT_SIGNAL_CHANGE event
  	 * should be generated assuming the signal strength has changed at
  	 * least %hysteresis from the previously indicated signal change event.
  	 */
  	int (*signal_monitor)(void *priv, int threshold, int hysteresis);
  
  	/**
  	 * get_noa - Get current Notice of Absence attribute payload
  	 * @priv: Private driver interface data
  	 * @buf: Buffer for returning NoA
  	 * @buf_len: Buffer length in octets
  	 * Returns: Number of octets used in buf, 0 to indicate no NoA is being
  	 * advertized, or -1 on failure
  	 *
  	 * This function is used to fetch the current Notice of Absence
  	 * attribute value from GO.
  	 */
  	int (*get_noa)(void *priv, u8 *buf, size_t buf_len);
  
  	/**
  	 * set_noa - Set Notice of Absence parameters for GO (testing)
  	 * @priv: Private driver interface data
  	 * @count: Count
  	 * @start: Start time in ms from next TBTT
  	 * @duration: Duration in ms
  	 * Returns: 0 on success or -1 on failure
  	 *
  	 * This function is used to set Notice of Absence parameters for GO. It
  	 * is used only for testing. To disable NoA, all parameters are set to
  	 * 0.
  	 */
  	int (*set_noa)(void *priv, u8 count, int start, int duration);
  
  	/**
  	 * set_p2p_powersave - Set P2P power save options
  	 * @priv: Private driver interface data
  	 * @legacy_ps: 0 = disable, 1 = enable, 2 = maximum PS, -1 = no change
  	 * @opp_ps: 0 = disable, 1 = enable, -1 = no change
  	 * @ctwindow: 0.. = change (msec), -1 = no change
  	 * Returns: 0 on success or -1 on failure
  	 */
  	int (*set_p2p_powersave)(void *priv, int legacy_ps, int opp_ps,
  				 int ctwindow);
  
  	/**
  	 * ampdu - Enable/disable aggregation
  	 * @priv: Private driver interface data
  	 * @ampdu: 1/0 = enable/disable A-MPDU aggregation
  	 * Returns: 0 on success or -1 on failure
  	 */
  	int (*ampdu)(void *priv, int ampdu);
  
  	/**
  	 * get_radio_name - Get physical radio name for the device
  	 * @priv: Private driver interface data
  	 * Returns: Radio name or %NULL if not known
  	 *
  	 * The returned data must not be modified by the caller. It is assumed
  	 * that any interface that has the same radio name as another is
  	 * sharing the same physical radio. This information can be used to
  	 * share scan results etc. information between the virtual interfaces
  	 * to speed up various operations.
  	 */
  	const char * (*get_radio_name)(void *priv);
  
  	/**
  	 * send_tdls_mgmt - for sending TDLS management packets
  	 * @priv: private driver interface data
  	 * @dst: Destination (peer) MAC address
  	 * @action_code: TDLS action code for the mssage
  	 * @dialog_token: Dialog Token to use in the message (if needed)
  	 * @status_code: Status Code or Reason Code to use (if needed)
  	 * @peer_capab: TDLS peer capability (TDLS_PEER_* bitfield)
  	 * @initiator: Is the current end the TDLS link initiator
  	 * @buf: TDLS IEs to add to the message
  	 * @len: Length of buf in octets
  	 * Returns: 0 on success, negative (<0) on failure
  	 *
  	 * This optional function can be used to send packet to driver which is
  	 * responsible for receiving and sending all TDLS packets.
  	 */
  	int (*send_tdls_mgmt)(void *priv, const u8 *dst, u8 action_code,
  			      u8 dialog_token, u16 status_code, u32 peer_capab,
  			      int initiator, const u8 *buf, size_t len);
  
  	/**
  	 * tdls_oper - Ask the driver to perform high-level TDLS operations
  	 * @priv: Private driver interface data
  	 * @oper: TDLS high-level operation. See %enum tdls_oper
  	 * @peer: Destination (peer) MAC address
  	 * Returns: 0 on success, negative (<0) on failure
  	 *
  	 * This optional function can be used to send high-level TDLS commands
  	 * to the driver.
  	 */
  	int (*tdls_oper)(void *priv, enum tdls_oper oper, const u8 *peer);
  
  	/**
  	 * wnm_oper - Notify driver of the WNM frame reception
  	 * @priv: Private driver interface data
  	 * @oper: WNM operation. See %enum wnm_oper
  	 * @peer: Destination (peer) MAC address
  	 * @buf: Buffer for the driver to fill in (for getting IE)
  	 * @buf_len: Return the len of buf
  	 * Returns: 0 on success, negative (<0) on failure
  	 */
  	int (*wnm_oper)(void *priv, enum wnm_oper oper, const u8 *peer,
  			u8 *buf, u16 *buf_len);
  
  	/**
  	 * set_qos_map - Set QoS Map
  	 * @priv: Private driver interface data
  	 * @qos_map_set: QoS Map
  	 * @qos_map_set_len: Length of QoS Map
  	 */
  	int (*set_qos_map)(void *priv, const u8 *qos_map_set,
  			   u8 qos_map_set_len);
  
  	/**
  	 * br_add_ip_neigh - Add a neigh to the bridge ip neigh table
  	 * @priv: Private driver interface data
  	 * @version: IP version of the IP address, 4 or 6
  	 * @ipaddr: IP address for the neigh entry
  	 * @prefixlen: IP address prefix length
  	 * @addr: Corresponding MAC address
  	 * Returns: 0 on success, negative (<0) on failure
  	 */
  	int (*br_add_ip_neigh)(void *priv, u8 version, const u8 *ipaddr,
  			       int prefixlen, const u8 *addr);
  
  	/**
  	 * br_delete_ip_neigh - Remove a neigh from the bridge ip neigh table
  	 * @priv: Private driver interface data
  	 * @version: IP version of the IP address, 4 or 6
  	 * @ipaddr: IP address for the neigh entry
  	 * Returns: 0 on success, negative (<0) on failure
  	 */
  	int (*br_delete_ip_neigh)(void *priv, u8 version, const u8 *ipaddr);
  
  	/**
  	 * br_port_set_attr - Set a bridge port attribute
  	 * @attr: Bridge port attribute to set
  	 * @val: Value to be set
  	 * Returns: 0 on success, negative (<0) on failure
  	 */
  	int (*br_port_set_attr)(void *priv, enum drv_br_port_attr attr,
  				unsigned int val);
  
  	/**
  	 * br_port_set_attr - Set a bridge network parameter
  	 * @param: Bridge parameter to set
  	 * @val: Value to be set
  	 * Returns: 0 on success, negative (<0) on failure
  	 */
  	int (*br_set_net_param)(void *priv, enum drv_br_net_param param,
  				unsigned int val);
  
  	/**
  	 * get_wowlan - Get wake-on-wireless status
  	 * @priv: Private driver interface data
  	 */
  	int (*get_wowlan)(void *priv);
  
  	/**
  	 * set_wowlan - Set wake-on-wireless triggers
  	 * @priv: Private driver interface data
  	 * @triggers: wowlan triggers
  	 */
  	int (*set_wowlan)(void *priv, const struct wowlan_triggers *triggers);
  
  	/**
  	 * signal_poll - Get current connection information
  	 * @priv: Private driver interface data
  	 * @signal_info: Connection info structure
  	 */
  	int (*signal_poll)(void *priv, struct wpa_signal_info *signal_info);
  
  	/**
  	 * channel_info - Get parameters of the current operating channel
  	 * @priv: Private driver interface data
  	 * @channel_info: Channel info structure
  	 * Returns: 0 on success, negative (<0) on failure
  	 */
  	int (*channel_info)(void *priv, struct wpa_channel_info *channel_info);
  
  	/**
  	 * set_authmode - Set authentication algorithm(s) for static WEP
  	 * @priv: Private driver interface data
  	 * @authmode: 1=Open System, 2=Shared Key, 3=both
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * This function can be used to set authentication algorithms for AP
  	 * mode when static WEP is used. If the driver uses user space MLME/SME
  	 * implementation, there is no need to implement this function.
  	 *
  	 * DEPRECATED - use set_ap() instead
  	 */
  	int (*set_authmode)(void *priv, int authmode);
  
  #ifdef ANDROID
  	/**
  	 * driver_cmd - Execute driver-specific command
  	 * @priv: Private driver interface data
  	 * @cmd: Command to execute
  	 * @buf: Return buffer
  	 * @buf_len: Buffer length
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*driver_cmd)(void *priv, char *cmd, char *buf, size_t buf_len);
  #endif /* ANDROID */
  
  	/**
  	 * vendor_cmd - Execute vendor specific command
  	 * @priv: Private driver interface data
  	 * @vendor_id: Vendor id
  	 * @subcmd: Vendor command id
  	 * @data: Vendor command parameters (%NULL if no parameters)
  	 * @data_len: Data length
  	 * @buf: Return buffer (%NULL to ignore reply)
  	 * Returns: 0 on success, negative (<0) on failure
  	 *
  	 * This function handles vendor specific commands that are passed to
  	 * the driver/device. The command is identified by vendor id and
  	 * command id. Parameters can be passed as argument to the command
  	 * in the data buffer. Reply (if any) will be filled in the supplied
  	 * return buffer.
  	 *
  	 * The exact driver behavior is driver interface and vendor specific. As
  	 * an example, this will be converted to a vendor specific cfg80211
  	 * command in case of the nl80211 driver interface.
  	 */
  	int (*vendor_cmd)(void *priv, unsigned int vendor_id,
  			  unsigned int subcmd, const u8 *data, size_t data_len,
  			  struct wpabuf *buf);
  
  	/**
  	 * set_rekey_info - Set rekey information
  	 * @priv: Private driver interface data
  	 * @kek: Current KEK
  	 * @kek_len: KEK length in octets
  	 * @kck: Current KCK
  	 * @kck_len: KCK length in octets
  	 * @replay_ctr: Current EAPOL-Key Replay Counter
  	 *
  	 * This optional function can be used to provide information for the
  	 * driver/firmware to process EAPOL-Key frames in Group Key Handshake
  	 * while the host (including wpa_supplicant) is sleeping.
  	 */
  	void (*set_rekey_info)(void *priv, const u8 *kek, size_t kek_len,
  			       const u8 *kck, size_t kck_len,
  			       const u8 *replay_ctr);
  
  	/**
  	 * sta_assoc - Station association indication
  	 * @priv: Private driver interface data
  	 * @own_addr: Source address and BSSID for association frame
  	 * @addr: MAC address of the station to associate
  	 * @reassoc: flag to indicate re-association
  	 * @status: association response status code
  	 * @ie: assoc response ie buffer
  	 * @len: ie buffer length
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * This function indicates the driver to send (Re)Association
  	 * Response frame to the station.
  	 */
  	 int (*sta_assoc)(void *priv, const u8 *own_addr, const u8 *addr,
  			  int reassoc, u16 status, const u8 *ie, size_t len);
  
  	/**
  	 * sta_auth - Station authentication indication
  	 * @priv: private driver interface data
  	 * @params: Station authentication parameters
  	 *
  	 * Returns: 0 on success, -1 on failure
  	 */
  	 int (*sta_auth)(void *priv,
  			 struct wpa_driver_sta_auth_params *params);
  
  	/**
  	 * add_tspec - Add traffic stream
  	 * @priv: Private driver interface data
  	 * @addr: MAC address of the station to associate
  	 * @tspec_ie: tspec ie buffer
  	 * @tspec_ielen: tspec ie length
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * This function adds the traffic steam for the station
  	 * and fills the medium_time in tspec_ie.
  	 */
  	 int (*add_tspec)(void *priv, const u8 *addr, u8 *tspec_ie,
  			  size_t tspec_ielen);
  
  	/**
  	 * add_sta_node - Add a station node in the driver
  	 * @priv: Private driver interface data
  	 * @addr: MAC address of the station to add
  	 * @auth_alg: authentication algorithm used by the station
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * This function adds the station node in the driver, when
  	 * the station gets added by FT-over-DS.
  	 */
  	int (*add_sta_node)(void *priv, const u8 *addr, u16 auth_alg);
  
  	/**
  	 * sched_scan - Request the driver to initiate scheduled scan
  	 * @priv: Private driver interface data
  	 * @params: Scan parameters
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * This operation should be used for scheduled scan offload to
  	 * the hardware. Every time scan results are available, the
  	 * driver should report scan results event for wpa_supplicant
  	 * which will eventually request the results with
  	 * wpa_driver_get_scan_results2(). This operation is optional
  	 * and if not provided or if it returns -1, we fall back to
  	 * normal host-scheduled scans.
  	 */
  	int (*sched_scan)(void *priv, struct wpa_driver_scan_params *params);
  
  	/**
  	 * stop_sched_scan - Request the driver to stop a scheduled scan
  	 * @priv: Private driver interface data
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * This should cause the scheduled scan to be stopped and
  	 * results should stop being sent. Must be supported if
  	 * sched_scan is supported.
  	 */
  	int (*stop_sched_scan)(void *priv);
  
  	/**
  	 * Set the legacy rates.  User would have previously configured the
  	 * ratemask through other means.  This just tells the kernel to apply
  	 * it.
  	 */
  	int (*set_legacy_rates)(void *priv);
  
  	/**
  	 * poll_client - Probe (null data or such) the given station
  	 * @priv: Private driver interface data
  	 * @own_addr: MAC address of sending interface
  	 * @addr: MAC address of the station to probe
  	 * @qos: Indicates whether station is QoS station
  	 *
  	 * This function is used to verify whether an associated station is
  	 * still present. This function does not need to be implemented if the
  	 * driver provides such inactivity polling mechanism.
  	 */
  	void (*poll_client)(void *priv, const u8 *own_addr,
  			    const u8 *addr, int qos);
  
  	/**
  	 * radio_disable - Disable/enable radio
  	 * @priv: Private driver interface data
  	 * @disabled: 1=disable 0=enable radio
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * This optional command is for testing purposes. It can be used to
  	 * disable the radio on a testbed device to simulate out-of-radio-range
  	 * conditions.
  	 */
  	int (*radio_disable)(void *priv, int disabled);
  
  	/**
  	 * switch_channel - Announce channel switch and migrate the GO to the
  	 * given frequency
  	 * @priv: Private driver interface data
  	 * @settings: Settings for CSA period and new channel
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * This function is used to move the GO to the legacy STA channel to
  	 * avoid frequency conflict in single channel concurrency.
  	 */
  	int (*switch_channel)(void *priv, struct csa_settings *settings);
  
  	/**
  	 * add_tx_ts - Add traffic stream
  	 * @priv: Private driver interface data
  	 * @tsid: Traffic stream ID
  	 * @addr: Receiver address
  	 * @user_prio: User priority of the traffic stream
  	 * @admitted_time: Admitted time for this TS in units of
  	 *	32 microsecond periods (per second).
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*add_tx_ts)(void *priv, u8 tsid, const u8 *addr, u8 user_prio,
  			 u16 admitted_time);
  
  	/**
  	 * del_tx_ts - Delete traffic stream
  	 * @priv: Private driver interface data
  	 * @tsid: Traffic stream ID
  	 * @addr: Receiver address
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*del_tx_ts)(void *priv, u8 tsid, const u8 *addr);
  
  	/**
  	 * Enable channel-switching with TDLS peer
  	 * @priv: Private driver interface data
  	 * @addr: MAC address of the TDLS peer
  	 * @oper_class: Operating class of the switch channel
  	 * @params: Channel specification
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * The function indicates to driver that it can start switching to a
  	 * different channel with a specified TDLS peer. The switching is
  	 * assumed on until canceled with tdls_disable_channel_switch().
  	 */
  	int (*tdls_enable_channel_switch)(
  		void *priv, const u8 *addr, u8 oper_class,
  		const struct hostapd_freq_params *params);
  
  	/**
  	 * Disable channel switching with TDLS peer
  	 * @priv: Private driver interface data
  	 * @addr: MAC address of the TDLS peer
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * This function indicates to the driver that it should stop switching
  	 * with a given TDLS peer.
  	 */
  	int (*tdls_disable_channel_switch)(void *priv, const u8 *addr);
  
  	/**
  	 * start_dfs_cac - Listen for radar interference on the channel
  	 * @priv: Private driver interface data
  	 * @freq: Channel parameters
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*start_dfs_cac)(void *priv, struct hostapd_freq_params *freq);
  
  	/**
  	 * stop_ap - Removes beacon from AP
  	 * @priv: Private driver interface data
  	 * Returns: 0 on success, -1 on failure (or if not supported)
  	 *
  	 * This optional function can be used to disable AP mode related
  	 * configuration. Unlike deinit_ap, it does not change to station
  	 * mode.
  	 */
  	int (*stop_ap)(void *priv);
  
  	/**
  	 * get_survey - Retrieve survey data
  	 * @priv: Private driver interface data
  	 * @freq: If set, survey data for the specified frequency is only
  	 *	being requested. If not set, all survey data is requested.
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * Use this to retrieve:
  	 *
  	 * - the observed channel noise floor
  	 * - the amount of time we have spent on the channel
  	 * - the amount of time during which we have spent on the channel that
  	 *   the radio has determined the medium is busy and we cannot
  	 *   transmit
  	 * - the amount of time we have spent receiving data
  	 * - the amount of time we have spent transmitting data
  	 *
  	 * This data can be used for spectrum heuristics. One example is
  	 * Automatic Channel Selection (ACS). The channel survey data is
  	 * kept on a linked list on the channel data, one entry is added
  	 * for each survey. The min_nf of the channel is updated for each
  	 * survey.
  	 */
  	int (*get_survey)(void *priv, unsigned int freq);
  
  	/**
  	 * status - Get driver interface status information
  	 * @priv: Private driver interface data
  	 * @buf: Buffer for printing the status information
  	 * @buflen: Maximum length of the buffer
  	 * Returns: Length of written status information or -1 on failure
  	 */
  	int (*status)(void *priv, char *buf, size_t buflen);
  
  	/**
  	 * roaming - Set roaming policy for driver-based BSS selection
  	 * @priv: Private driver interface data
  	 * @allowed: Whether roaming within ESS is allowed
  	 * @bssid: Forced BSSID if roaming is disabled or %NULL if not set
  	 * Returns: Length of written status information or -1 on failure
  	 *
  	 * This optional callback can be used to update roaming policy from the
  	 * associate() command (bssid being set there indicates that the driver
  	 * should not roam before getting this roaming() call to allow roaming.
  	 * If the driver does not indicate WPA_DRIVER_FLAGS_BSS_SELECTION
  	 * capability, roaming policy is handled within wpa_supplicant and there
  	 * is no need to implement or react to this callback.
  	 */
  	int (*roaming)(void *priv, int allowed, const u8 *bssid);
  
  	/**
  	 * disable_fils - Enable/disable FILS feature
  	 * @priv: Private driver interface data
  	 * @disable: 0-enable and 1-disable FILS feature
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * This callback can be used to configure driver and below layers to
  	 * enable/disable all FILS features.
  	 */
  	int (*disable_fils)(void *priv, int disable);
  
  	/**
  	 * set_mac_addr - Set MAC address
  	 * @priv: Private driver interface data
  	 * @addr: MAC address to use or %NULL for setting back to permanent
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*set_mac_addr)(void *priv, const u8 *addr);
  
  #ifdef CONFIG_MACSEC
  	int (*macsec_init)(void *priv, struct macsec_init_params *params);
  
  	int (*macsec_deinit)(void *priv);
  
  	/**
  	 * macsec_get_capability - Inform MKA of this driver's capability
  	 * @priv: Private driver interface data
  	 * @cap: Driver's capability
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*macsec_get_capability)(void *priv, enum macsec_cap *cap);
  
  	/**
  	 * enable_protect_frames - Set protect frames status
  	 * @priv: Private driver interface data
  	 * @enabled: true = protect frames enabled
  	 *           false = protect frames disabled
  	 * Returns: 0 on success, -1 on failure (or if not supported)
  	 */
  	int (*enable_protect_frames)(void *priv, bool enabled);
  
  	/**
  	 * enable_encrypt - Set encryption status
  	 * @priv: Private driver interface data
  	 * @enabled: true = encrypt outgoing traffic
  	 *           false = integrity-only protection on outgoing traffic
  	 * Returns: 0 on success, -1 on failure (or if not supported)
  	 */
  	int (*enable_encrypt)(void *priv, bool enabled);
  
  	/**
  	 * set_replay_protect - Set replay protect status and window size
  	 * @priv: Private driver interface data
  	 * @enabled: true = replay protect enabled
  	 *           false = replay protect disabled
  	 * @window: replay window size, valid only when replay protect enabled
  	 * Returns: 0 on success, -1 on failure (or if not supported)
  	 */
  	int (*set_replay_protect)(void *priv, bool enabled, u32 window);
  
  	/**
  	 * set_current_cipher_suite - Set current cipher suite
  	 * @priv: Private driver interface data
  	 * @cs: EUI64 identifier
  	 * Returns: 0 on success, -1 on failure (or if not supported)
  	 */
  	int (*set_current_cipher_suite)(void *priv, u64 cs);
  
  	/**
  	 * enable_controlled_port - Set controlled port status
  	 * @priv: Private driver interface data
  	 * @enabled: true = controlled port enabled
  	 *           false = controlled port disabled
  	 * Returns: 0 on success, -1 on failure (or if not supported)
  	 */
  	int (*enable_controlled_port)(void *priv, bool enabled);
  
  	/**
  	 * get_receive_lowest_pn - Get receive lowest pn
  	 * @priv: Private driver interface data
  	 * @sa: secure association
  	 * Returns: 0 on success, -1 on failure (or if not supported)
  	 */
  	int (*get_receive_lowest_pn)(void *priv, struct receive_sa *sa);
  
  	/**
  	 * get_transmit_next_pn - Get transmit next pn
  	 * @priv: Private driver interface data
  	 * @sa: secure association
  	 * Returns: 0 on success, -1 on failure (or if not supported)
  	 */
  	int (*get_transmit_next_pn)(void *priv, struct transmit_sa *sa);
  
  	/**
  	 * set_transmit_next_pn - Set transmit next pn
  	 * @priv: Private driver interface data
  	 * @sa: secure association
  	 * Returns: 0 on success, -1 on failure (or if not supported)
  	 */
  	int (*set_transmit_next_pn)(void *priv, struct transmit_sa *sa);
  
  	/**
  	 * set_receive_lowest_pn - Set receive lowest PN
  	 * @priv: Private driver interface data
  	 * @sa: secure association
  	 * Returns: 0 on success, -1 on failure (or if not supported)
  	 */
  	int (*set_receive_lowest_pn)(void *priv, struct receive_sa *sa);
  
  	/**
  	 * create_receive_sc - create secure channel for receiving
  	 * @priv: Private driver interface data
  	 * @sc: secure channel
  	 * @conf_offset: confidentiality offset (0, 30, or 50)
  	 * @validation: frame validation policy (0 = Disabled, 1 = Checked,
  	 *	2 = Strict)
  	 * Returns: 0 on success, -1 on failure (or if not supported)
  	 */
  	int (*create_receive_sc)(void *priv, struct receive_sc *sc,
  				 unsigned int conf_offset,
  				 int validation);
  
  	/**
  	 * delete_receive_sc - delete secure connection for receiving
  	 * @priv: private driver interface data from init()
  	 * @sc: secure channel
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*delete_receive_sc)(void *priv, struct receive_sc *sc);
  
  	/**
  	 * create_receive_sa - create secure association for receive
  	 * @priv: private driver interface data from init()
  	 * @sa: secure association
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*create_receive_sa)(void *priv, struct receive_sa *sa);
  
  	/**
  	 * delete_receive_sa - Delete secure association for receive
  	 * @priv: Private driver interface data from init()
  	 * @sa: Secure association
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*delete_receive_sa)(void *priv, struct receive_sa *sa);
  
  	/**
  	 * enable_receive_sa - enable the SA for receive
  	 * @priv: private driver interface data from init()
  	 * @sa: secure association
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*enable_receive_sa)(void *priv, struct receive_sa *sa);
  
  	/**
  	 * disable_receive_sa - disable SA for receive
  	 * @priv: private driver interface data from init()
  	 * @sa: secure association
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*disable_receive_sa)(void *priv, struct receive_sa *sa);
  
  	/**
  	 * create_transmit_sc - create secure connection for transmit
  	 * @priv: private driver interface data from init()
  	 * @sc: secure channel
  	 * @conf_offset: confidentiality offset (0, 30, or 50)
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*create_transmit_sc)(void *priv, struct transmit_sc *sc,
  				  unsigned int conf_offset);
  
  	/**
  	 * delete_transmit_sc - delete secure connection for transmit
  	 * @priv: private driver interface data from init()
  	 * @sc: secure channel
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*delete_transmit_sc)(void *priv, struct transmit_sc *sc);
  
  	/**
  	 * create_transmit_sa - create secure association for transmit
  	 * @priv: private driver interface data from init()
  	 * @sa: secure association
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*create_transmit_sa)(void *priv, struct transmit_sa *sa);
  
  	/**
  	 * delete_transmit_sa - Delete secure association for transmit
  	 * @priv: Private driver interface data from init()
  	 * @sa: Secure association
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*delete_transmit_sa)(void *priv, struct transmit_sa *sa);
  
  	/**
  	 * enable_transmit_sa - enable SA for transmit
  	 * @priv: private driver interface data from init()
  	 * @sa: secure association
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*enable_transmit_sa)(void *priv, struct transmit_sa *sa);
  
  	/**
  	 * disable_transmit_sa - disable SA for transmit
  	 * @priv: private driver interface data from init()
  	 * @sa: secure association
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*disable_transmit_sa)(void *priv, struct transmit_sa *sa);
  #endif /* CONFIG_MACSEC */
  
  	/**
  	 * init_mesh - Driver specific initialization for mesh
  	 * @priv: Private driver interface data
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*init_mesh)(void *priv);
  
  	/**
  	 * join_mesh - Join a mesh network
  	 * @priv: Private driver interface data
  	 * @params: Mesh configuration parameters
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*join_mesh)(void *priv,
  			 struct wpa_driver_mesh_join_params *params);
  
  	/**
  	 * leave_mesh - Leave a mesh network
  	 * @priv: Private driver interface data
  	 * Returns 0 on success, -1 on failure
  	 */
  	int (*leave_mesh)(void *priv);
  
  	/**
  	 * probe_mesh_link - Inject a frame over direct mesh link to a given
  	 *	peer skipping the next_hop lookup from mpath table.
  	 * @priv: Private driver interface data
  	 * @addr: Peer MAC address
  	 * @eth: Ethernet frame to be sent
  	 * @len: Ethernet frame lengtn in bytes
  	 * Returns 0 on success, -1 on failure
  	 */
  	int (*probe_mesh_link)(void *priv, const u8 *addr, const u8 *eth,
  			       size_t len);
  
  	/**
  	 * do_acs - Automatically select channel
  	 * @priv: Private driver interface data
  	 * @params: Parameters for ACS
  	 * Returns 0 on success, -1 on failure
  	 *
  	 * This command can be used to offload ACS to the driver if the driver
  	 * indicates support for such offloading (WPA_DRIVER_FLAGS_ACS_OFFLOAD).
  	 */
  	int (*do_acs)(void *priv, struct drv_acs_params *params);
  
  	/**
  	 * set_band - Notify driver of band selection
  	 * @priv: Private driver interface data
  	 * @band: The selected band(s)
  	 * Returns 0 on success, -1 on failure
  	 */
  	int (*set_band)(void *priv, enum set_band band);
  
  	/**
  	 * get_pref_freq_list - Get preferred frequency list for an interface
  	 * @priv: Private driver interface data
  	 * @if_type: Interface type
  	 * @num: Number of channels
  	 * @freq_list: Preferred channel frequency list encoded in MHz values
  	 * Returns 0 on success, -1 on failure
  	 *
  	 * This command can be used to query the preferred frequency list from
  	 * the driver specific to a particular interface type.
  	 */
  	int (*get_pref_freq_list)(void *priv, enum wpa_driver_if_type if_type,
  				  unsigned int *num, unsigned int *freq_list);
  
  	/**
  	 * set_prob_oper_freq - Indicate probable P2P operating channel
  	 * @priv: Private driver interface data
  	 * @freq: Channel frequency in MHz
  	 * Returns 0 on success, -1 on failure
  	 *
  	 * This command can be used to inform the driver of the operating
  	 * frequency that an ongoing P2P group formation is likely to come up
  	 * on. Local device is assuming P2P Client role.
  	 */
  	int (*set_prob_oper_freq)(void *priv, unsigned int freq);
  
  	/**
  	 * abort_scan - Request the driver to abort an ongoing scan
  	 * @priv: Private driver interface data
  	 * @scan_cookie: Cookie identifying the scan request. This is used only
  	 *	when the vendor interface QCA_NL80211_VENDOR_SUBCMD_TRIGGER_SCAN
  	 *	was used to trigger scan. Otherwise, 0 is used.
  	 * Returns 0 on success, -1 on failure
  	 */
  	int (*abort_scan)(void *priv, u64 scan_cookie);
  
  	/**
  	 * configure_data_frame_filters - Request to configure frame filters
  	 * @priv: Private driver interface data
  	 * @filter_flags: The type of frames to filter (bitfield of
  	 * WPA_DATA_FRAME_FILTER_FLAG_*)
  	 * Returns: 0 on success or -1 on failure
  	 */
  	int (*configure_data_frame_filters)(void *priv, u32 filter_flags);
  
  	/**
  	 * get_ext_capab - Get extended capabilities for the specified interface
  	 * @priv: Private driver interface data
  	 * @type: Interface type for which to get extended capabilities
  	 * @ext_capab: Extended capabilities fetched
  	 * @ext_capab_mask: Extended capabilities mask
  	 * @ext_capab_len: Length of the extended capabilities
  	 * Returns: 0 on success or -1 on failure
  	 */
  	int (*get_ext_capab)(void *priv, enum wpa_driver_if_type type,
  			     const u8 **ext_capab, const u8 **ext_capab_mask,
  			     unsigned int *ext_capab_len);
  
  	/**
  	 * p2p_lo_start - Start offloading P2P listen to device
  	 * @priv: Private driver interface data
  	 * @freq: Listening frequency (MHz) for P2P listen
  	 * @period: Length of the listen operation in milliseconds
  	 * @interval: Interval for running the listen operation in milliseconds
  	 * @count: Number of times to run the listen operation
  	 * @device_types: Device primary and secondary types
  	 * @dev_types_len: Number of bytes for device_types
  	 * @ies: P2P IE and WSC IE for Probe Response frames
  	 * @ies_len: Length of ies in bytes
  	 * Returns: 0 on success or -1 on failure
  	 */
  	int (*p2p_lo_start)(void *priv, unsigned int freq,
  			    unsigned int period, unsigned int interval,
  			    unsigned int count,
  			    const u8 *device_types, size_t dev_types_len,
  			    const u8 *ies, size_t ies_len);
  
  	/**
  	 * p2p_lo_stop - Stop P2P listen offload
  	 * @priv: Private driver interface data
  	 * Returns: 0 on success or -1 on failure
  	 */
  	int (*p2p_lo_stop)(void *priv);
  
  	/**
  	 * set_default_scan_ies - Set default scan IEs
  	 * @priv: Private driver interface data
  	 * @ies: Scan default IEs buffer
  	 * @ies_len: Length of IEs in bytes
  	 * Returns: 0 on success or -1 on failure
  	 *
  	 * The driver can use these by default when there are no scan IEs coming
  	 * in the subsequent scan requests. Also in case of one or more of IEs
  	 * given in set_default_scan_ies() are missing in the subsequent scan
  	 * request, the driver should merge the missing scan IEs in the scan
  	 * request from the IEs set by set_default_scan_ies() in the Probe
  	 * Request frames sent.
  	 */
  	int (*set_default_scan_ies)(void *priv, const u8 *ies, size_t ies_len);
  
  	/**
  	 * set_tdls_mode - Set TDLS trigger mode to the host driver
  	 * @priv: Private driver interface data
  	 * @tdls_external_control: Represents if TDLS external trigger control
  	 *  mode is enabled/disabled.
  	 *
  	 * This optional callback can be used to configure the TDLS external
  	 * trigger control mode to the host driver.
  	 */
  	int (*set_tdls_mode)(void *priv, int tdls_external_control);
  
  	/**
  	 * get_bss_transition_status - Get candidate BSS's transition status
  	 * @priv: Private driver interface data
  	 * @params: Candidate BSS list
  	 *
  	 * Get the accept or reject reason code for a list of BSS transition
  	 * candidates.
  	 */
  	struct wpa_bss_candidate_info *
  	(*get_bss_transition_status)(void *priv,
  				     struct wpa_bss_trans_info *params);
  	/**
  	 * ignore_assoc_disallow - Configure driver to ignore assoc_disallow
  	 * @priv: Private driver interface data
  	 * @ignore_disallow: 0 to not ignore, 1 to ignore
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*ignore_assoc_disallow)(void *priv, int ignore_disallow);
  
  	/**
  	 * set_bssid_blacklist - Set blacklist of BSSIDs to the driver
  	 * @priv: Private driver interface data
  	 * @num_bssid: Number of blacklist BSSIDs
  	 * @bssids: List of blacklisted BSSIDs
  	 */
  	int (*set_bssid_blacklist)(void *priv, unsigned int num_bssid,
  				   const u8 *bssid);
  
  	/**
  	 * update_connect_params - Update the connection parameters
  	 * @priv: Private driver interface data
  	 * @params: Association parameters
  	 * @mask: Bit mask indicating which parameters in @params have to be
  	 *	updated
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * Update the connection parameters when in connected state so that the
  	 * driver uses the updated parameters for subsequent roaming. This is
  	 * used only with drivers that implement internal BSS selection and
  	 * roaming.
  	 */
  	int (*update_connect_params)(
  		void *priv, struct wpa_driver_associate_params *params,
  		enum wpa_drv_update_connect_params_mask mask);
  
  	/**
  	 * send_external_auth_status - Indicate the status of external
  	 * authentication processing to the host driver.
  	 * @priv: Private driver interface data
  	 * @params: Status of authentication processing.
  	 * Returns: 0 on success, -1 on failure
  	 */
  	int (*send_external_auth_status)(void *priv,
  					 struct external_auth *params);
  
  	/**
  	 * set_4addr_mode - Set 4-address mode
  	 * @priv: Private driver interface data
  	 * @bridge_ifname: Bridge interface name
  	 * @val: 0 - disable 4addr mode, 1 - enable 4addr mode
  	 * Returns: 0 on success, < 0 on failure
  	 */
  	int (*set_4addr_mode)(void *priv, const char *bridge_ifname, int val);
  
  	/**
  	 * update_dh_ie - Update DH IE
  	 * @priv: Private driver interface data
  	 * @peer_mac: Peer MAC address
  	 * @reason_code: Reacon code
  	 * @ie: DH IE
  	 * @ie_len: DH IE length in bytes
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * This callback is used to let the driver know the DH processing result
  	 * and DH IE for a pending association.
  	 */
  	int (*update_dh_ie)(void *priv, const u8 *peer_mac, u16 reason_code,
  			    const u8 *ie, size_t ie_len);
  
  	/**
  	 * dpp_listen - Notify driver about start/stop of DPP listen
  	 * @priv: Private driver interface data
  	 * @enable: Whether listen state is enabled (or disabled)
  	 * Returns: 0 on success, -1 on failure
  	 *
  	 * This optional callback can be used to update RX frame filtering to
  	 * explicitly allow reception of broadcast Public Action frames.
  	 */
  	int (*dpp_listen)(void *priv, bool enable);
  };
  
  /**
   * enum wpa_event_type - Event type for wpa_supplicant_event() calls
   */
  enum wpa_event_type {
  	/**
  	 * EVENT_ASSOC - Association completed
  	 *
  	 * This event needs to be delivered when the driver completes IEEE
  	 * 802.11 association or reassociation successfully.
  	 * wpa_driver_ops::get_bssid() is expected to provide the current BSSID
  	 * after this event has been generated. In addition, optional
  	 * EVENT_ASSOCINFO may be generated just before EVENT_ASSOC to provide
  	 * more information about the association. If the driver interface gets
  	 * both of these events at the same time, it can also include the
  	 * assoc_info data in EVENT_ASSOC call.
  	 */
  	EVENT_ASSOC,
  
  	/**
  	 * EVENT_DISASSOC - Association lost
  	 *
  	 * This event should be called when association is lost either due to
  	 * receiving deauthenticate or disassociate frame from the AP or when
  	 * sending either of these frames to the current AP. If the driver
  	 * supports separate deauthentication event, EVENT_DISASSOC should only
  	 * be used for disassociation and EVENT_DEAUTH for deauthentication.
  	 * In AP mode, union wpa_event_data::disassoc_info is required.
  	 */
  	EVENT_DISASSOC,
  
  	/**
  	 * EVENT_MICHAEL_MIC_FAILURE - Michael MIC (TKIP) detected
  	 *
  	 * This event must be delivered when a Michael MIC error is detected by
  	 * the local driver. Additional data for event processing is
  	 * provided with union wpa_event_data::michael_mic_failure. This
  	 * information is used to request new encyption key and to initiate
  	 * TKIP countermeasures if needed.
  	 */
  	EVENT_MICHAEL_MIC_FAILURE,
  
  	/**
  	 * EVENT_SCAN_RESULTS - Scan results available
  	 *
  	 * This event must be called whenever scan results are available to be
  	 * fetched with struct wpa_driver_ops::get_scan_results(). This event
  	 * is expected to be used some time after struct wpa_driver_ops::scan()
  	 * is called. If the driver provides an unsolicited event when the scan
  	 * has been completed, this event can be used to trigger
  	 * EVENT_SCAN_RESULTS call. If such event is not available from the
  	 * driver, the driver wrapper code is expected to use a registered
  	 * timeout to generate EVENT_SCAN_RESULTS call after the time that the
  	 * scan is expected to be completed. Optional information about
  	 * completed scan can be provided with union wpa_event_data::scan_info.
  	 */
  	EVENT_SCAN_RESULTS,
  
  	/**
  	 * EVENT_ASSOCINFO - Report optional extra information for association
  	 *
  	 * This event can be used to report extra association information for
  	 * EVENT_ASSOC processing. This extra information includes IEs from
  	 * association frames and Beacon/Probe Response frames in union
  	 * wpa_event_data::assoc_info. EVENT_ASSOCINFO must be send just before
  	 * EVENT_ASSOC. Alternatively, the driver interface can include
  	 * assoc_info data in the EVENT_ASSOC call if it has all the
  	 * information available at the same point.
  	 */
  	EVENT_ASSOCINFO,
  
  	/**
  	 * EVENT_INTERFACE_STATUS - Report interface status changes
  	 *
  	 * This optional event can be used to report changes in interface
  	 * status (interface added/removed) using union
  	 * wpa_event_data::interface_status. This can be used to trigger
  	 * wpa_supplicant to stop and re-start processing for the interface,
  	 * e.g., when a cardbus card is ejected/inserted.
  	 */
  	EVENT_INTERFACE_STATUS,
  
  	/**
  	 * EVENT_PMKID_CANDIDATE - Report a candidate AP for pre-authentication
  	 *
  	 * This event can be used to inform wpa_supplicant about candidates for
  	 * RSN (WPA2) pre-authentication. If wpa_supplicant is not responsible
  	 * for scan request (ap_scan=2 mode), this event is required for
  	 * pre-authentication. If wpa_supplicant is performing scan request
  	 * (ap_scan=1), this event is optional since scan results can be used
  	 * to add pre-authentication candidates. union
  	 * wpa_event_data::pmkid_candidate is used to report the BSSID of the
  	 * candidate and priority of the candidate, e.g., based on the signal
  	 * strength, in order to try to pre-authenticate first with candidates
  	 * that are most likely targets for re-association.
  	 *
  	 * EVENT_PMKID_CANDIDATE can be called whenever the driver has updates
  	 * on the candidate list. In addition, it can be called for the current
  	 * AP and APs that have existing PMKSA cache entries. wpa_supplicant
  	 * will automatically skip pre-authentication in cases where a valid
  	 * PMKSA exists. When more than one candidate exists, this event should
  	 * be generated once for each candidate.
  	 *
  	 * Driver will be notified about successful pre-authentication with
  	 * struct wpa_driver_ops::add_pmkid() calls.
  	 */
  	EVENT_PMKID_CANDIDATE,
  
  	/**
  	 * EVENT_TDLS - Request TDLS operation
  	 *
  	 * This event can be used to request a TDLS operation to be performed.
  	 */
  	EVENT_TDLS,
  
  	/**
  	 * EVENT_FT_RESPONSE - Report FT (IEEE 802.11r) response IEs
  	 *
  	 * The driver is expected to report the received FT IEs from
  	 * FT authentication sequence from the AP. The FT IEs are included in
  	 * the extra information in union wpa_event_data::ft_ies.
  	 */
  	EVENT_FT_RESPONSE,
  
  	/**
  	 * EVENT_IBSS_RSN_START - Request RSN authentication in IBSS
  	 *
  	 * The driver can use this event to inform wpa_supplicant about a STA
  	 * in an IBSS with which protected frames could be exchanged. This
  	 * event starts RSN authentication with the other STA to authenticate
  	 * the STA and set up encryption keys with it.
  	 */
  	EVENT_IBSS_RSN_START,
  
  	/**
  	 * EVENT_AUTH - Authentication result
  	 *
  	 * This event should be called when authentication attempt has been
  	 * completed. This is only used if the driver supports separate
  	 * authentication step (struct wpa_driver_ops::authenticate).
  	 * Information about authentication result is included in
  	 * union wpa_event_data::auth.
  	 */
  	EVENT_AUTH,
  
  	/**
  	 * EVENT_DEAUTH - Authentication lost
  	 *
  	 * This event should be called when authentication is lost either due
  	 * to receiving deauthenticate frame from the AP or when sending that
  	 * frame to the current AP.
  	 * In AP mode, union wpa_event_data::deauth_info is required.
  	 */
  	EVENT_DEAUTH,
  
  	/**
  	 * EVENT_ASSOC_REJECT - Association rejected
  	 *
  	 * This event should be called when (re)association attempt has been
  	 * rejected by the AP. Information about the association response is
  	 * included in union wpa_event_data::assoc_reject.
  	 */
  	EVENT_ASSOC_REJECT,
  
  	/**
  	 * EVENT_AUTH_TIMED_OUT - Authentication timed out
  	 */
  	EVENT_AUTH_TIMED_OUT,
  
  	/**
  	 * EVENT_ASSOC_TIMED_OUT - Association timed out
  	 */
  	EVENT_ASSOC_TIMED_OUT,
  
  	/**
  	 * EVENT_WPS_BUTTON_PUSHED - Report hardware push button press for WPS
  	 */
  	EVENT_WPS_BUTTON_PUSHED,
  
  	/**
  	 * EVENT_TX_STATUS - Report TX status
  	 */
  	EVENT_TX_STATUS,
  
  	/**
  	 * EVENT_RX_FROM_UNKNOWN - Report RX from unknown STA
  	 */
  	EVENT_RX_FROM_UNKNOWN,
  
  	/**
  	 * EVENT_RX_MGMT - Report RX of a management frame
  	 */
  	EVENT_RX_MGMT,
  
  	/**
  	 * EVENT_REMAIN_ON_CHANNEL - Remain-on-channel duration started
  	 *
  	 * This event is used to indicate when the driver has started the
  	 * requested remain-on-channel duration. Information about the
  	 * operation is included in union wpa_event_data::remain_on_channel.
  	 */
  	EVENT_REMAIN_ON_CHANNEL,
  
  	/**
  	 * EVENT_CANCEL_REMAIN_ON_CHANNEL - Remain-on-channel timed out
  	 *
  	 * This event is used to indicate when the driver has completed
  	 * remain-on-channel duration, i.e., may noot be available on the
  	 * requested channel anymore. Information about the
  	 * operation is included in union wpa_event_data::remain_on_channel.
  	 */
  	EVENT_CANCEL_REMAIN_ON_CHANNEL,
  
  	/**
  	 * EVENT_RX_PROBE_REQ - Indicate received Probe Request frame
  	 *
  	 * This event is used to indicate when a Probe Request frame has been
  	 * received. Information about the received frame is included in
  	 * union wpa_event_data::rx_probe_req. The driver is required to report
  	 * these events only after successfully completed probe_req_report()
  	 * commands to request the events (i.e., report parameter is non-zero)
  	 * in station mode. In AP mode, Probe Request frames should always be
  	 * reported.
  	 */
  	EVENT_RX_PROBE_REQ,
  
  	/**
  	 * EVENT_NEW_STA - New wired device noticed
  	 *
  	 * This event is used to indicate that a new device has been detected
  	 * in a network that does not use association-like functionality (i.e.,
  	 * mainly wired Ethernet). This can be used to start EAPOL
  	 * authenticator when receiving a frame from a device. The address of
  	 * the device is included in union wpa_event_data::new_sta.
  	 */
  	EVENT_NEW_STA,
  
  	/**
  	 * EVENT_EAPOL_RX - Report received EAPOL frame
  	 *
  	 * When in AP mode with hostapd, this event is required to be used to
  	 * deliver the receive EAPOL frames from the driver.
  	 */
  	EVENT_EAPOL_RX,
  
  	/**
  	 * EVENT_SIGNAL_CHANGE - Indicate change in signal strength
  	 *
  	 * This event is used to indicate changes in the signal strength
  	 * observed in frames received from the current AP if signal strength
  	 * monitoring has been enabled with signal_monitor().
  	 */
  	EVENT_SIGNAL_CHANGE,
  
  	/**
  	 * EVENT_INTERFACE_ENABLED - Notify that interface was enabled
  	 *
  	 * This event is used to indicate that the interface was enabled after
  	 * having been previously disabled, e.g., due to rfkill.
  	 */
  	EVENT_INTERFACE_ENABLED,
  
  	/**
  	 * EVENT_INTERFACE_DISABLED - Notify that interface was disabled
  	 *
  	 * This event is used to indicate that the interface was disabled,
  	 * e.g., due to rfkill.
  	 */
  	EVENT_INTERFACE_DISABLED,
  
  	/**
  	 * EVENT_CHANNEL_LIST_CHANGED - Channel list changed
  	 *
  	 * This event is used to indicate that the channel list has changed,
  	 * e.g., because of a regulatory domain change triggered by scan
  	 * results including an AP advertising a country code.
  	 */
  	EVENT_CHANNEL_LIST_CHANGED,
  
  	/**
  	 * EVENT_INTERFACE_UNAVAILABLE - Notify that interface is unavailable
  	 *
  	 * This event is used to indicate that the driver cannot maintain this
  	 * interface in its operation mode anymore. The most likely use for
  	 * this is to indicate that AP mode operation is not available due to
  	 * operating channel would need to be changed to a DFS channel when
  	 * the driver does not support radar detection and another virtual
  	 * interfaces caused the operating channel to change. Other similar
  	 * resource conflicts could also trigger this for station mode
  	 * interfaces. This event can be propagated when channel switching
  	 * fails.
  	 */
  	EVENT_INTERFACE_UNAVAILABLE,
  
  	/**
  	 * EVENT_BEST_CHANNEL
  	 *
  	 * Driver generates this event whenever it detects a better channel
  	 * (e.g., based on RSSI or channel use). This information can be used
  	 * to improve channel selection for a new AP/P2P group.
  	 */
  	EVENT_BEST_CHANNEL,
  
  	/**
  	 * EVENT_UNPROT_DEAUTH - Unprotected Deauthentication frame received
  	 *
  	 * This event should be called when a Deauthentication frame is dropped
  	 * due to it not being protected (MFP/IEEE 802.11w).
  	 * union wpa_event_data::unprot_deauth is required to provide more
  	 * details of the frame.
  	 */
  	EVENT_UNPROT_DEAUTH,
  
  	/**
  	 * EVENT_UNPROT_DISASSOC - Unprotected Disassociation frame received
  	 *
  	 * This event should be called when a Disassociation frame is dropped
  	 * due to it not being protected (MFP/IEEE 802.11w).
  	 * union wpa_event_data::unprot_disassoc is required to provide more
  	 * details of the frame.
  	 */
  	EVENT_UNPROT_DISASSOC,
  
  	/**
  	 * EVENT_STATION_LOW_ACK
  	 *
  	 * Driver generates this event whenever it detected that a particular
  	 * station was lost. Detection can be through massive transmission
  	 * failures for example.
  	 */
  	EVENT_STATION_LOW_ACK,
  
  	/**
  	 * EVENT_IBSS_PEER_LOST - IBSS peer not reachable anymore
  	 */
  	EVENT_IBSS_PEER_LOST,
  
  	/**
  	 * EVENT_DRIVER_GTK_REKEY - Device/driver did GTK rekey
  	 *
  	 * This event carries the new replay counter to notify wpa_supplicant
  	 * of the current EAPOL-Key Replay Counter in case the driver/firmware
  	 * completed Group Key Handshake while the host (including
  	 * wpa_supplicant was sleeping).
  	 */
  	EVENT_DRIVER_GTK_REKEY,
  
  	/**
  	 * EVENT_SCHED_SCAN_STOPPED - Scheduled scan was stopped
  	 */
  	EVENT_SCHED_SCAN_STOPPED,
  
  	/**
  	 * EVENT_DRIVER_CLIENT_POLL_OK - Station responded to poll
  	 *
  	 * This event indicates that the station responded to the poll
  	 * initiated with @poll_client.
  	 */
  	EVENT_DRIVER_CLIENT_POLL_OK,
  
  	/**
  	 * EVENT_EAPOL_TX_STATUS - notify of EAPOL TX status
  	 */
  	EVENT_EAPOL_TX_STATUS,
  
  	/**
  	 * EVENT_CH_SWITCH - AP or GO decided to switch channels
  	 *
  	 * Described in wpa_event_data.ch_switch
  	 * */
  	EVENT_CH_SWITCH,
  
  	/**
  	 * EVENT_CH_SWITCH_STARTED - AP or GO started to switch channels
  	 *
  	 * This is a pre-switch event indicating the shortly following switch
  	 * of operating channels.
  	 *
  	 * Described in wpa_event_data.ch_switch
  	 */
  	EVENT_CH_SWITCH_STARTED,
  	/**
  	 * EVENT_WNM - Request WNM operation
  	 *
  	 * This event can be used to request a WNM operation to be performed.
  	 */
  	EVENT_WNM,
  
  	/**
  	 * EVENT_CONNECT_FAILED_REASON - Connection failure reason in AP mode
  	 *
  	 * This event indicates that the driver reported a connection failure
  	 * with the specified client (for example, max client reached, etc.) in
  	 * AP mode.
  	 */
  	EVENT_CONNECT_FAILED_REASON,
  
  	/**
  	 * EVENT_DFS_RADAR_DETECTED - Notify of radar detection
  	 *
  	 * A radar has been detected on the supplied frequency, hostapd should
  	 * react accordingly (e.g., change channel).
  	 */
  	EVENT_DFS_RADAR_DETECTED,
  
  	/**
  	 * EVENT_DFS_CAC_FINISHED - Notify that channel availability check has been completed
  	 *
  	 * After a successful CAC, the channel can be marked clear and used.
  	 */
  	EVENT_DFS_CAC_FINISHED,
  
  	/**
  	 * EVENT_DFS_CAC_ABORTED - Notify that channel availability check has been aborted
  	 *
  	 * The CAC was not successful, and the channel remains in the previous
  	 * state. This may happen due to a radar being detected or other
  	 * external influences.
  	 */
  	EVENT_DFS_CAC_ABORTED,
  
  	/**
  	 * EVENT_DFS_NOP_FINISHED - Notify that non-occupancy period is over
  	 *
  	 * The channel which was previously unavailable is now available again.
  	 */
  	EVENT_DFS_NOP_FINISHED,
  
  	/**
  	 * EVENT_SURVEY - Received survey data
  	 *
  	 * This event gets triggered when a driver query is issued for survey
  	 * data and the requested data becomes available. The returned data is
  	 * stored in struct survey_results. The results provide at most one
  	 * survey entry for each frequency and at minimum will provide one
  	 * survey entry for one frequency. The survey data can be os_malloc()'d
  	 * and then os_free()'d, so the event callback must only copy data.
  	 */
  	EVENT_SURVEY,
  
  	/**
  	 * EVENT_SCAN_STARTED - Scan started
  	 *
  	 * This indicates that driver has started a scan operation either based
  	 * on a request from wpa_supplicant/hostapd or from another application.
  	 * EVENT_SCAN_RESULTS is used to indicate when the scan has been
  	 * completed (either successfully or by getting cancelled).
  	 */
  	EVENT_SCAN_STARTED,
  
  	/**
  	 * EVENT_AVOID_FREQUENCIES - Received avoid frequency range
  	 *
  	 * This event indicates a set of frequency ranges that should be avoided
  	 * to reduce issues due to interference or internal co-existence
  	 * information in the driver.
  	 */
  	EVENT_AVOID_FREQUENCIES,
  
  	/**
  	 * EVENT_NEW_PEER_CANDIDATE - new (unknown) mesh peer notification
  	 */
  	EVENT_NEW_PEER_CANDIDATE,
  
  	/**
  	 * EVENT_ACS_CHANNEL_SELECTED - Received selected channels by ACS
  	 *
  	 * Indicates a pair of primary and secondary channels chosen by ACS
  	 * in device.
  	 */
  	EVENT_ACS_CHANNEL_SELECTED,
  
  	/**
  	 * EVENT_DFS_CAC_STARTED - Notify that channel availability check has
  	 * been started.
  	 *
  	 * This event indicates that channel availability check has been started
  	 * on a DFS frequency by a driver that supports DFS Offload.
  	 */
  	EVENT_DFS_CAC_STARTED,
  
  	/**
  	 * EVENT_P2P_LO_STOP - Notify that P2P listen offload is stopped
  	 */
  	EVENT_P2P_LO_STOP,
  
  	/**
  	 * EVENT_BEACON_LOSS - Beacon loss detected
  	 *
  	 * This event indicates that no Beacon frames has been received from
  	 * the current AP. This may indicate that the AP is not anymore in
  	 * range.
  	 */
  	EVENT_BEACON_LOSS,
  
  	/**
  	 * EVENT_DFS_PRE_CAC_EXPIRED - Notify that channel availability check
  	 * done previously (Pre-CAC) on the channel has expired. This would
  	 * normally be on a non-ETSI DFS regulatory domain. DFS state of the
  	 * channel will be moved from available to usable. A new CAC has to be
  	 * performed before start operating on this channel.
  	 */
  	EVENT_DFS_PRE_CAC_EXPIRED,
  
  	/**
  	 * EVENT_EXTERNAL_AUTH - This event interface is used by host drivers
  	 * that do not define separate commands for authentication and
  	 * association (~WPA_DRIVER_FLAGS_SME) but offload the 802.11
  	 * authentication to wpa_supplicant. This event carries all the
  	 * necessary information from the host driver for the authentication to
  	 * happen.
  	 */
  	EVENT_EXTERNAL_AUTH,
  
  	/**
  	 * EVENT_PORT_AUTHORIZED - Notification that a connection is authorized
  	 *
  	 * This event should be indicated when the driver completes the 4-way
  	 * handshake. This event should be preceded by an EVENT_ASSOC that
  	 * indicates the completion of IEEE 802.11 association.
  	 */
  	EVENT_PORT_AUTHORIZED,
  
  	/**
  	 * EVENT_STATION_OPMODE_CHANGED - Notify STA's HT/VHT operation mode
  	 * change event.
  	 */
  	EVENT_STATION_OPMODE_CHANGED,
  
  	/**
  	 * EVENT_INTERFACE_MAC_CHANGED - Notify that interface MAC changed
  	 *
  	 * This event is emitted when the MAC changes while the interface is
  	 * enabled. When an interface was disabled and becomes enabled, it
  	 * must be always assumed that the MAC possibly changed.
  	 */
  	EVENT_INTERFACE_MAC_CHANGED,
  
  	/**
  	 * EVENT_WDS_STA_INTERFACE_STATUS - Notify WDS STA interface status
  	 *
  	 * This event is emitted when an interface is added/removed for WDS STA.
  	 */
  	EVENT_WDS_STA_INTERFACE_STATUS,
  
  	/**
  	  * EVENT_UPDATE_DH - Notification of updated DH information
  	  */
  	EVENT_UPDATE_DH,
  
  	/**
  	 * EVENT_UNPROT_BEACON - Unprotected Beacon frame received
  	 *
  	 * This event should be called when a Beacon frame is dropped due to it
  	 * not being protected correctly. union wpa_event_data::unprot_beacon
  	 * is required to provide more details of the frame.
  	 */
  	EVENT_UNPROT_BEACON,
  };
  
  
  /**
   * struct freq_survey - Channel survey info
   *
   * @ifidx: Interface index in which this survey was observed
   * @freq: Center of frequency of the surveyed channel
   * @nf: Channel noise floor in dBm
   * @channel_time: Amount of time in ms the radio spent on the channel
   * @channel_time_busy: Amount of time in ms the radio detected some signal
   *     that indicated to the radio the channel was not clear
   * @channel_time_rx: Amount of time the radio spent receiving data
   * @channel_time_tx: Amount of time the radio spent transmitting data
   * @filled: bitmask indicating which fields have been reported, see
   *     SURVEY_HAS_* defines.
   * @list: Internal list pointers
   */
  struct freq_survey {
  	u32 ifidx;
  	unsigned int freq;
  	s8 nf;
  	u64 channel_time;
  	u64 channel_time_busy;
  	u64 channel_time_rx;
  	u64 channel_time_tx;
  	unsigned int filled;
  	struct dl_list list;
  };
  
  #define SURVEY_HAS_NF BIT(0)
  #define SURVEY_HAS_CHAN_TIME BIT(1)
  #define SURVEY_HAS_CHAN_TIME_BUSY BIT(2)
  #define SURVEY_HAS_CHAN_TIME_RX BIT(3)
  #define SURVEY_HAS_CHAN_TIME_TX BIT(4)
  
  
  /**
   * union wpa_event_data - Additional data for wpa_supplicant_event() calls
   */
  union wpa_event_data {
  	/**
  	 * struct assoc_info - Data for EVENT_ASSOC and EVENT_ASSOCINFO events
  	 *
  	 * This structure is optional for EVENT_ASSOC calls and required for
  	 * EVENT_ASSOCINFO calls. By using EVENT_ASSOC with this data, the
  	 * driver interface does not need to generate separate EVENT_ASSOCINFO
  	 * calls.
  	 */
  	struct assoc_info {
  		/**
  		 * reassoc - Flag to indicate association or reassociation
  		 */
  		int reassoc;
  
  		/**
  		 * req_ies - (Re)Association Request IEs
  		 *
  		 * If the driver generates WPA/RSN IE, this event data must be
  		 * returned for WPA handshake to have needed information. If
  		 * wpa_supplicant-generated WPA/RSN IE is used, this
  		 * information event is optional.
  		 *
  		 * This should start with the first IE (fixed fields before IEs
  		 * are not included).
  		 */
  		const u8 *req_ies;
  
  		/**
  		 * req_ies_len - Length of req_ies in bytes
  		 */
  		size_t req_ies_len;
  
  		/**
  		 * resp_ies - (Re)Association Response IEs
  		 *
  		 * Optional association data from the driver. This data is not
  		 * required WPA, but may be useful for some protocols and as
  		 * such, should be reported if this is available to the driver
  		 * interface.
  		 *
  		 * This should start with the first IE (fixed fields before IEs
  		 * are not included).
  		 */
  		const u8 *resp_ies;
  
  		/**
  		 * resp_ies_len - Length of resp_ies in bytes
  		 */
  		size_t resp_ies_len;
  
  		/**
  		 * resp_frame - (Re)Association Response frame
  		 */
  		const u8 *resp_frame;
  
  		/**
  		 * resp_frame_len - (Re)Association Response frame length
  		 */
  		size_t resp_frame_len;
  
  		/**
  		 * beacon_ies - Beacon or Probe Response IEs
  		 *
  		 * Optional Beacon/ProbeResp data: IEs included in Beacon or
  		 * Probe Response frames from the current AP (i.e., the one
  		 * that the client just associated with). This information is
  		 * used to update WPA/RSN IE for the AP. If this field is not
  		 * set, the results from previous scan will be used. If no
  		 * data for the new AP is found, scan results will be requested
  		 * again (without scan request). At this point, the driver is
  		 * expected to provide WPA/RSN IE for the AP (if WPA/WPA2 is
  		 * used).
  		 *
  		 * This should start with the first IE (fixed fields before IEs
  		 * are not included).
  		 */
  		const u8 *beacon_ies;
  
  		/**
  		 * beacon_ies_len - Length of beacon_ies */
  		size_t beacon_ies_len;
  
  		/**
  		 * freq - Frequency of the operational channel in MHz
  		 */
  		unsigned int freq;
  
  		/**
  		 * wmm_params - WMM parameters used in this association.
  		 */
  		struct wmm_params wmm_params;
  
  		/**
  		 * addr - Station address (for AP mode)
  		 */
  		const u8 *addr;
  
  		/**
  		 * The following is the key management offload information
  		 * @authorized
  		 * @key_replay_ctr
  		 * @key_replay_ctr_len
  		 * @ptk_kck
  		 * @ptk_kek_len
  		 * @ptk_kek
  		 * @ptk_kek_len
  		 */
  
  		/**
  		 * authorized - Status of key management offload,
  		 * 1 = successful
  		 */
  		int authorized;
  
  		/**
  		 * key_replay_ctr - Key replay counter value last used
  		 * in a valid EAPOL-Key frame
  		 */
  		const u8 *key_replay_ctr;
  
  		/**
  		 * key_replay_ctr_len - The length of key_replay_ctr
  		 */
  		size_t key_replay_ctr_len;
  
  		/**
  		 * ptk_kck - The derived PTK KCK
  		 */
  		const u8 *ptk_kck;
  
  		/**
  		 * ptk_kek_len - The length of ptk_kck
  		 */
  		size_t ptk_kck_len;
  
  		/**
  		 * ptk_kek - The derived PTK KEK
  		 * This is used in key management offload and also in FILS SK
  		 * offload.
  		 */
  		const u8 *ptk_kek;
  
  		/**
  		 * ptk_kek_len - The length of ptk_kek
  		 */
  		size_t ptk_kek_len;
  
  		/**
  		 * subnet_status - The subnet status:
  		 * 0 = unknown, 1 = unchanged, 2 = changed
  		 */
  		u8 subnet_status;
  
  		/**
  		 * The following information is used in FILS SK offload
  		 * @fils_erp_next_seq_num
  		 * @fils_pmk
  		 * @fils_pmk_len
  		 * @fils_pmkid
  		 */
  
  		/**
  		 * fils_erp_next_seq_num - The next sequence number to use in
  		 * FILS ERP messages
  		 */
  		u16 fils_erp_next_seq_num;
  
  		/**
  		 * fils_pmk - A new PMK if generated in case of FILS
  		 * authentication
  		 */
  		const u8 *fils_pmk;
  
  		/**
  		 * fils_pmk_len - Length of fils_pmk
  		 */
  		size_t fils_pmk_len;
  
  		/**
  		 * fils_pmkid - PMKID used or generated in FILS authentication
  		 */
  		const u8 *fils_pmkid;
  	} assoc_info;
  
  	/**
  	 * struct disassoc_info - Data for EVENT_DISASSOC events
  	 */
  	struct disassoc_info {
  		/**
  		 * addr - Station address (for AP mode)
  		 */
  		const u8 *addr;
  
  		/**
  		 * reason_code - Reason Code (host byte order) used in
  		 *	Deauthentication frame
  		 */
  		u16 reason_code;
  
  		/**
  		 * ie - Optional IE(s) in Disassociation frame
  		 */
  		const u8 *ie;
  
  		/**
  		 * ie_len - Length of ie buffer in octets
  		 */
  		size_t ie_len;
  
  		/**
  		 * locally_generated - Whether the frame was locally generated
  		 */
  		int locally_generated;
  	} disassoc_info;
  
  	/**
  	 * struct deauth_info - Data for EVENT_DEAUTH events
  	 */
  	struct deauth_info {
  		/**
  		 * addr - Station address (for AP mode)
  		 */
  		const u8 *addr;
  
  		/**
  		 * reason_code - Reason Code (host byte order) used in
  		 *	Deauthentication frame
  		 */
  		u16 reason_code;
  
  		/**
  		 * ie - Optional IE(s) in Deauthentication frame
  		 */
  		const u8 *ie;
  
  		/**
  		 * ie_len - Length of ie buffer in octets
  		 */
  		size_t ie_len;
  
  		/**
  		 * locally_generated - Whether the frame was locally generated
  		 */
  		int locally_generated;
  	} deauth_info;
  
  	/**
  	 * struct michael_mic_failure - Data for EVENT_MICHAEL_MIC_FAILURE
  	 */
  	struct michael_mic_failure {
  		int unicast;
  		const u8 *src;
  	} michael_mic_failure;
  
  	/**
  	 * struct interface_status - Data for EVENT_INTERFACE_STATUS
  	 */
  	struct interface_status {
  		unsigned int ifindex;
  		char ifname[100];
  		enum {
  			EVENT_INTERFACE_ADDED, EVENT_INTERFACE_REMOVED
  		} ievent;
  	} interface_status;
  
  	/**
  	 * struct pmkid_candidate - Data for EVENT_PMKID_CANDIDATE
  	 */
  	struct pmkid_candidate {
  		/** BSSID of the PMKID candidate */
  		u8 bssid[ETH_ALEN];
  		/** Smaller the index, higher the priority */
  		int index;
  		/** Whether RSN IE includes pre-authenticate flag */
  		int preauth;
  	} pmkid_candidate;
  
  	/**
  	 * struct tdls - Data for EVENT_TDLS
  	 */
  	struct tdls {
  		u8 peer[ETH_ALEN];
  		enum {
  			TDLS_REQUEST_SETUP,
  			TDLS_REQUEST_TEARDOWN,
  			TDLS_REQUEST_DISCOVER,
  		} oper;
  		u16 reason_code; /* for teardown */
  	} tdls;
  
  	/**
  	 * struct wnm - Data for EVENT_WNM
  	 */
  	struct wnm {
  		u8 addr[ETH_ALEN];
  		enum {
  			WNM_OPER_SLEEP,
  		} oper;
  		enum {
  			WNM_SLEEP_ENTER,
  			WNM_SLEEP_EXIT
  		} sleep_action;
  		int sleep_intval;
  		u16 reason_code;
  		u8 *buf;
  		u16 buf_len;
  	} wnm;
  
  	/**
  	 * struct ft_ies - FT information elements (EVENT_FT_RESPONSE)
  	 *
  	 * During FT (IEEE 802.11r) authentication sequence, the driver is
  	 * expected to use this event to report received FT IEs (MDIE, FTIE,
  	 * RSN IE, TIE, possible resource request) to the supplicant. The FT
  	 * IEs for the next message will be delivered through the
  	 * struct wpa_driver_ops::update_ft_ies() callback.
  	 */
  	struct ft_ies {
  		const u8 *ies;
  		size_t ies_len;
  		int ft_action;
  		u8 target_ap[ETH_ALEN];
  		/** Optional IE(s), e.g., WMM TSPEC(s), for RIC-Request */
  		const u8 *ric_ies;
  		/** Length of ric_ies buffer in octets */
  		size_t ric_ies_len;
  	} ft_ies;
  
  	/**
  	 * struct ibss_rsn_start - Data for EVENT_IBSS_RSN_START
  	 */
  	struct ibss_rsn_start {
  		u8 peer[ETH_ALEN];
  	} ibss_rsn_start;
  
  	/**
  	 * struct auth_info - Data for EVENT_AUTH events
  	 */
  	struct auth_info {
  		u8 peer[ETH_ALEN];
  		u8 bssid[ETH_ALEN];
  		u16 auth_type;
  		u16 auth_transaction;
  		u16 status_code;
  		const u8 *ies;
  		size_t ies_len;
  	} auth;
  
  	/**
  	 * struct assoc_reject - Data for EVENT_ASSOC_REJECT events
  	 */
  	struct assoc_reject {
  		/**
  		 * bssid - BSSID of the AP that rejected association
  		 */
  		const u8 *bssid;
  
  		/**
  		 * resp_ies - (Re)Association Response IEs
  		 *
  		 * Optional association data from the driver. This data is not
  		 * required WPA, but may be useful for some protocols and as
  		 * such, should be reported if this is available to the driver
  		 * interface.
  		 *
  		 * This should start with the first IE (fixed fields before IEs
  		 * are not included).
  		 */
  		const u8 *resp_ies;
  
  		/**
  		 * resp_ies_len - Length of resp_ies in bytes
  		 */
  		size_t resp_ies_len;
  
  		/**
  		 * status_code - Status Code from (Re)association Response
  		 */
  		u16 status_code;
  
  		/**
  		 * timed_out - Whether failure is due to timeout (etc.) rather
  		 * than explicit rejection response from the AP.
  		 */
  		int timed_out;
  
  		/**
  		 * timeout_reason - Reason for the timeout
  		 */
  		const char *timeout_reason;
  
  		/**
  		 * fils_erp_next_seq_num - The next sequence number to use in
  		 * FILS ERP messages
  		 */
  		u16 fils_erp_next_seq_num;
  	} assoc_reject;
  
  	struct timeout_event {
  		u8 addr[ETH_ALEN];
  	} timeout_event;
  
  	/**
  	 * struct tx_status - Data for EVENT_TX_STATUS events
  	 */
  	struct tx_status {
  		u16 type;
  		u16 stype;
  		const u8 *dst;
  		const u8 *data;
  		size_t data_len;
  		int ack;
  	} tx_status;
  
  	/**
  	 * struct rx_from_unknown - Data for EVENT_RX_FROM_UNKNOWN events
  	 */
  	struct rx_from_unknown {
  		const u8 *bssid;
  		const u8 *addr;
  		int wds;
  	} rx_from_unknown;
  
  	/**
  	 * struct rx_mgmt - Data for EVENT_RX_MGMT events
  	 */
  	struct rx_mgmt {
  		const u8 *frame;
  		size_t frame_len;
  		u32 datarate;
  
  		/**
  		 * drv_priv - Pointer to store driver private BSS information
  		 *
  		 * If not set to NULL, this is used for comparison with
  		 * hostapd_data->drv_priv to determine which BSS should process
  		 * the frame.
  		 */
  		void *drv_priv;
  
  		/**
  		 * freq - Frequency (in MHz) on which the frame was received
  		 */
  		int freq;
  
  		/**
  		 * ssi_signal - Signal strength in dBm (or 0 if not available)
  		 */
  		int ssi_signal;
  	} rx_mgmt;
  
  	/**
  	 * struct remain_on_channel - Data for EVENT_REMAIN_ON_CHANNEL events
  	 *
  	 * This is also used with EVENT_CANCEL_REMAIN_ON_CHANNEL events.
  	 */
  	struct remain_on_channel {
  		/**
  		 * freq - Channel frequency in MHz
  		 */
  		unsigned int freq;
  
  		/**
  		 * duration - Duration to remain on the channel in milliseconds
  		 */
  		unsigned int duration;
  	} remain_on_channel;
  
  	/**
  	 * struct scan_info - Optional data for EVENT_SCAN_RESULTS events
  	 * @aborted: Whether the scan was aborted
  	 * @freqs: Scanned frequencies in MHz (%NULL = all channels scanned)
  	 * @num_freqs: Number of entries in freqs array
  	 * @ssids: Scanned SSIDs (%NULL or zero-length SSID indicates wildcard
  	 *	SSID)
  	 * @num_ssids: Number of entries in ssids array
  	 * @external_scan: Whether the scan info is for an external scan
  	 * @nl_scan_event: 1 if the source of this scan event is a normal scan,
  	 * 	0 if the source of the scan event is a vendor scan
  	 * @scan_start_tsf: Time when the scan started in terms of TSF of the
  	 *	BSS that the interface that requested the scan is connected to
  	 *	(if available).
  	 * @scan_start_tsf_bssid: The BSSID according to which %scan_start_tsf
  	 *	is set.
  	 */
  	struct scan_info {
  		int aborted;
  		const int *freqs;
  		size_t num_freqs;
  		struct wpa_driver_scan_ssid ssids[WPAS_MAX_SCAN_SSIDS];
  		size_t num_ssids;
  		int external_scan;
  		int nl_scan_event;
  		u64 scan_start_tsf;
  		u8 scan_start_tsf_bssid[ETH_ALEN];
  	} scan_info;
  
  	/**
  	 * struct rx_probe_req - Data for EVENT_RX_PROBE_REQ events
  	 */
  	struct rx_probe_req {
  		/**
  		 * sa - Source address of the received Probe Request frame
  		 */
  		const u8 *sa;
  
  		/**
  		 * da - Destination address of the received Probe Request frame
  		 *	or %NULL if not available
  		 */
  		const u8 *da;
  
  		/**
  		 * bssid - BSSID of the received Probe Request frame or %NULL
  		 *	if not available
  		 */
  		const u8 *bssid;
  
  		/**
  		 * ie - IEs from the Probe Request body
  		 */
  		const u8 *ie;
  
  		/**
  		 * ie_len - Length of ie buffer in octets
  		 */
  		size_t ie_len;
  
  		/**
  		 * signal - signal strength in dBm (or 0 if not available)
  		 */
  		int ssi_signal;
  	} rx_probe_req;
  
  	/**
  	 * struct new_sta - Data for EVENT_NEW_STA events
  	 */
  	struct new_sta {
  		const u8 *addr;
  	} new_sta;
  
  	/**
  	 * struct eapol_rx - Data for EVENT_EAPOL_RX events
  	 */
  	struct eapol_rx {
  		const u8 *src;
  		const u8 *data;
  		size_t data_len;
  	} eapol_rx;
  
  	/**
  	 * signal_change - Data for EVENT_SIGNAL_CHANGE events
  	 */
  	struct wpa_signal_info signal_change;
  
  	/**
  	 * struct best_channel - Data for EVENT_BEST_CHANNEL events
  	 * @freq_24: Best 2.4 GHz band channel frequency in MHz
  	 * @freq_5: Best 5 GHz band channel frequency in MHz
  	 * @freq_overall: Best channel frequency in MHz
  	 *
  	 * 0 can be used to indicate no preference in either band.
  	 */
  	struct best_channel {
  		int freq_24;
  		int freq_5;
  		int freq_overall;
  	} best_chan;
  
  	struct unprot_deauth {
  		const u8 *sa;
  		const u8 *da;
  		u16 reason_code;
  	} unprot_deauth;
  
  	struct unprot_disassoc {
  		const u8 *sa;
  		const u8 *da;
  		u16 reason_code;
  	} unprot_disassoc;
  
  	/**
  	 * struct low_ack - Data for EVENT_STATION_LOW_ACK events
  	 * @addr: station address
  	 * @num_packets: Number of packets lost (consecutive packets not
  	 * acknowledged)
  	 */
  	struct low_ack {
  		u8 addr[ETH_ALEN];
  		u32 num_packets;
  	} low_ack;
  
  	/**
  	 * struct ibss_peer_lost - Data for EVENT_IBSS_PEER_LOST
  	 */
  	struct ibss_peer_lost {
  		u8 peer[ETH_ALEN];
  	} ibss_peer_lost;
  
  	/**
  	 * struct driver_gtk_rekey - Data for EVENT_DRIVER_GTK_REKEY
  	 */
  	struct driver_gtk_rekey {
  		const u8 *bssid;
  		const u8 *replay_ctr;
  	} driver_gtk_rekey;
  
  	/**
  	 * struct client_poll - Data for EVENT_DRIVER_CLIENT_POLL_OK events
  	 * @addr: station address
  	 */
  	struct client_poll {
  		u8 addr[ETH_ALEN];
  	} client_poll;
  
  	/**
  	 * struct eapol_tx_status
  	 * @dst: Original destination
  	 * @data: Data starting with IEEE 802.1X header (!)
  	 * @data_len: Length of data
  	 * @ack: Indicates ack or lost frame
  	 *
  	 * This corresponds to hapd_send_eapol if the frame sent
  	 * there isn't just reported as EVENT_TX_STATUS.
  	 */
  	struct eapol_tx_status {
  		const u8 *dst;
  		const u8 *data;
  		int data_len;
  		int ack;
  	} eapol_tx_status;
  
  	/**
  	 * struct ch_switch
  	 * @freq: Frequency of new channel in MHz
  	 * @ht_enabled: Whether this is an HT channel
  	 * @ch_offset: Secondary channel offset
  	 * @ch_width: Channel width
  	 * @cf1: Center frequency 1
  	 * @cf2: Center frequency 2
  	 */
  	struct ch_switch {
  		int freq;
  		int ht_enabled;
  		int ch_offset;
  		enum chan_width ch_width;
  		int cf1;
  		int cf2;
  	} ch_switch;
  
  	/**
  	 * struct connect_failed - Data for EVENT_CONNECT_FAILED_REASON
  	 * @addr: Remote client address
  	 * @code: Reason code for connection failure
  	 */
  	struct connect_failed_reason {
  		u8 addr[ETH_ALEN];
  		enum {
  			MAX_CLIENT_REACHED,
  			BLOCKED_CLIENT
  		} code;
  	} connect_failed_reason;
  
  	/**
  	 * struct dfs_event - Data for radar detected events
  	 * @freq: Frequency of the channel in MHz
  	 */
  	struct dfs_event {
  		int freq;
  		int ht_enabled;
  		int chan_offset;
  		enum chan_width chan_width;
  		int cf1;
  		int cf2;
  	} dfs_event;
  
  	/**
  	 * survey_results - Survey result data for EVENT_SURVEY
  	 * @freq_filter: Requested frequency survey filter, 0 if request
  	 *	was for all survey data
  	 * @survey_list: Linked list of survey data (struct freq_survey)
  	 */
  	struct survey_results {
  		unsigned int freq_filter;
  		struct dl_list survey_list; /* struct freq_survey */
  	} survey_results;
  
  	/**
  	 * channel_list_changed - Data for EVENT_CHANNEL_LIST_CHANGED
  	 * @initiator: Initiator of the regulatory change
  	 * @type: Regulatory change type
  	 * @alpha2: Country code (or "" if not available)
  	 */
  	struct channel_list_changed {
  		enum reg_change_initiator initiator;
  		enum reg_type type;
  		char alpha2[3];
  	} channel_list_changed;
  
  	/**
  	 * freq_range - List of frequency ranges
  	 *
  	 * This is used as the data with EVENT_AVOID_FREQUENCIES.
  	 */
  	struct wpa_freq_range_list freq_range;
  
  	/**
  	 * struct mesh_peer
  	 *
  	 * @peer: Peer address
  	 * @ies: Beacon IEs
  	 * @ie_len: Length of @ies
  	 *
  	 * Notification of new candidate mesh peer.
  	 */
  	struct mesh_peer {
  		const u8 *peer;
  		const u8 *ies;
  		size_t ie_len;
  	} mesh_peer;
  
  	/**
  	 * struct acs_selected_channels - Data for EVENT_ACS_CHANNEL_SELECTED
  	 * @pri_freq: Selected primary frequency
  	 * @sec_freq: Selected secondary frequency
  	 * @edmg_channel: Selected EDMG channel
  	 * @vht_seg0_center_ch: VHT mode Segment0 center channel
  	 *	The value is the index of the channel center frequency for
  	 *	20 MHz, 40 MHz, and 80 MHz channels. The value is the center
  	 *	frequency index of the primary 80 MHz segment for 160 MHz and
  	 *	80+80 MHz channels.
  	 * @vht_seg1_center_ch: VHT mode Segment1 center channel
  	 *	The value is zero for 20 MHz, 40 MHz, and 80 MHz channels. The
  	 *	value is the index of the channel center frequency for 160 MHz
  	 *	channels and the center frequency index of the secondary 80 MHz
  	 *	segment for 80+80 MHz channels.
  	 * @ch_width: Selected Channel width by driver. Driver may choose to
  	 *	change hostapd configured ACS channel width due driver internal
  	 *	channel restrictions.
  	 * hw_mode: Selected band (used with hw_mode=any)
  	 */
  	struct acs_selected_channels {
  		unsigned int pri_freq;
  		unsigned int sec_freq;
  		u8 edmg_channel;
  		u8 vht_seg0_center_ch;
  		u8 vht_seg1_center_ch;
  		u16 ch_width;
  		enum hostapd_hw_mode hw_mode;
  	} acs_selected_channels;
  
  	/**
  	 * struct p2p_lo_stop - Reason code for P2P Listen offload stop event
  	 * @reason_code: Reason for stopping offload
  	 *	P2P_LO_STOPPED_REASON_COMPLETE: Listen offload finished as
  	 *	scheduled.
  	 *	P2P_LO_STOPPED_REASON_RECV_STOP_CMD: Host requested offload to
  	 *	be stopped.
  	 *	P2P_LO_STOPPED_REASON_INVALID_PARAM: Invalid listen offload
  	 *	parameters.
  	 *	P2P_LO_STOPPED_REASON_NOT_SUPPORTED: Listen offload not
  	 *	supported by device.
  	 */
  	struct p2p_lo_stop {
  		enum {
  			P2P_LO_STOPPED_REASON_COMPLETE = 0,
  			P2P_LO_STOPPED_REASON_RECV_STOP_CMD,
  			P2P_LO_STOPPED_REASON_INVALID_PARAM,
  			P2P_LO_STOPPED_REASON_NOT_SUPPORTED,
  		} reason_code;
  	} p2p_lo_stop;
  
  	/* For EVENT_EXTERNAL_AUTH */
  	struct external_auth external_auth;
  
  	/**
  	 * struct sta_opmode - Station's operation mode change event
  	 * @addr: The station MAC address
  	 * @smps_mode: SMPS mode of the station
  	 * @chan_width: Channel width of the station
  	 * @rx_nss: RX_NSS of the station
  	 *
  	 * This is used as data with EVENT_STATION_OPMODE_CHANGED.
  	 */
  	struct sta_opmode {
  		const u8 *addr;
  		enum smps_mode smps_mode;
  		enum chan_width chan_width;
  		u8 rx_nss;
  	} sta_opmode;
  
  	/**
  	 * struct wds_sta_interface - Data for EVENT_WDS_STA_INTERFACE_STATUS.
  	 */
  	struct wds_sta_interface {
  		const u8 *sta_addr;
  		const char *ifname;
  		enum {
  			INTERFACE_ADDED,
  			INTERFACE_REMOVED
  		} istatus;
  	} wds_sta_interface;
  
  	/**
  	 * struct update_dh - Data for EVENT_UPDATE_DH
  	 */
  	struct update_dh {
  		const u8 *peer;
  		const u8 *ie;
  		size_t ie_len;
  	} update_dh;
  
  	/**
  	 * struct unprot_beacon - Data for EVENT_UNPROT_BEACON
  	 */
  	struct unprot_beacon {
  		const u8 *sa;
  	} unprot_beacon;
  };
  
  /**
   * wpa_supplicant_event - Report a driver event for wpa_supplicant
   * @ctx: Context pointer (wpa_s); this is the ctx variable registered
   *	with struct wpa_driver_ops::init()
   * @event: event type (defined above)
   * @data: possible extra data for the event
   *
   * Driver wrapper code should call this function whenever an event is received
   * from the driver.
   */
  void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
  			  union wpa_event_data *data);
  
  /**
   * wpa_supplicant_event_global - Report a driver event for wpa_supplicant
   * @ctx: Context pointer (wpa_s); this is the ctx variable registered
   *	with struct wpa_driver_ops::init()
   * @event: event type (defined above)
   * @data: possible extra data for the event
   *
   * Same as wpa_supplicant_event(), but we search for the interface in
   * wpa_global.
   */
  void wpa_supplicant_event_global(void *ctx, enum wpa_event_type event,
  				 union wpa_event_data *data);
  
  /*
   * The following inline functions are provided for convenience to simplify
   * event indication for some of the common events.
   */
  
  static inline void drv_event_assoc(void *ctx, const u8 *addr, const u8 *ie,
  				   size_t ielen, int reassoc)
  {
  	union wpa_event_data event;
  	os_memset(&event, 0, sizeof(event));
  	event.assoc_info.reassoc = reassoc;
  	event.assoc_info.req_ies = ie;
  	event.assoc_info.req_ies_len = ielen;
  	event.assoc_info.addr = addr;
  	wpa_supplicant_event(ctx, EVENT_ASSOC, &event);
  }
  
  static inline void drv_event_disassoc(void *ctx, const u8 *addr)
  {
  	union wpa_event_data event;
  	os_memset(&event, 0, sizeof(event));
  	event.disassoc_info.addr = addr;
  	wpa_supplicant_event(ctx, EVENT_DISASSOC, &event);
  }
  
  static inline void drv_event_eapol_rx(void *ctx, const u8 *src, const u8 *data,
  				      size_t data_len)
  {
  	union wpa_event_data event;
  	os_memset(&event, 0, sizeof(event));
  	event.eapol_rx.src = src;
  	event.eapol_rx.data = data;
  	event.eapol_rx.data_len = data_len;
  	wpa_supplicant_event(ctx, EVENT_EAPOL_RX, &event);
  }
  
  /* driver_common.c */
  void wpa_scan_results_free(struct wpa_scan_results *res);
  
  /* Convert wpa_event_type to a string for logging */
  const char * event_to_string(enum wpa_event_type event);
  
  /* Convert chan_width to a string for logging and control interfaces */
  const char * channel_width_to_string(enum chan_width width);
  
  int channel_width_to_int(enum chan_width width);
  
  int ht_supported(const struct hostapd_hw_modes *mode);
  int vht_supported(const struct hostapd_hw_modes *mode);
  
  struct wowlan_triggers *
  wpa_get_wowlan_triggers(const char *wowlan_triggers,
  			const struct wpa_driver_capa *capa);
  /* Convert driver flag to string */
  const char * driver_flag_to_string(u64 flag);
  const char * driver_flag2_to_string(u64 flag2);
  
  /* NULL terminated array of linked in driver wrappers */
  extern const struct wpa_driver_ops *const wpa_drivers[];
  
  
  /* Available drivers */
  
  #ifdef CONFIG_DRIVER_WEXT
  extern const struct wpa_driver_ops wpa_driver_wext_ops; /* driver_wext.c */
  #endif /* CONFIG_DRIVER_WEXT */
  #ifdef CONFIG_DRIVER_NL80211
  /* driver_nl80211.c */
  extern const struct wpa_driver_ops wpa_driver_nl80211_ops;
  #endif /* CONFIG_DRIVER_NL80211 */
  #ifdef CONFIG_DRIVER_HOSTAP
  extern const struct wpa_driver_ops wpa_driver_hostap_ops; /* driver_hostap.c */
  #endif /* CONFIG_DRIVER_HOSTAP */
  #ifdef CONFIG_DRIVER_BSD
  extern const struct wpa_driver_ops wpa_driver_bsd_ops; /* driver_bsd.c */
  #endif /* CONFIG_DRIVER_BSD */
  #ifdef CONFIG_DRIVER_OPENBSD
  /* driver_openbsd.c */
  extern const struct wpa_driver_ops wpa_driver_openbsd_ops;
  #endif /* CONFIG_DRIVER_OPENBSD */
  #ifdef CONFIG_DRIVER_NDIS
  extern struct wpa_driver_ops wpa_driver_ndis_ops; /* driver_ndis.c */
  #endif /* CONFIG_DRIVER_NDIS */
  #ifdef CONFIG_DRIVER_WIRED
  extern const struct wpa_driver_ops wpa_driver_wired_ops; /* driver_wired.c */
  #endif /* CONFIG_DRIVER_WIRED */
  #ifdef CONFIG_DRIVER_MACSEC_QCA
  /* driver_macsec_qca.c */
  extern const struct wpa_driver_ops wpa_driver_macsec_qca_ops;
  #endif /* CONFIG_DRIVER_MACSEC_QCA */
  #ifdef CONFIG_DRIVER_MACSEC_LINUX
  /* driver_macsec_linux.c */
  extern const struct wpa_driver_ops wpa_driver_macsec_linux_ops;
  #endif /* CONFIG_DRIVER_MACSEC_LINUX */
  #ifdef CONFIG_DRIVER_ROBOSWITCH
  /* driver_roboswitch.c */
  extern const struct wpa_driver_ops wpa_driver_roboswitch_ops;
  #endif /* CONFIG_DRIVER_ROBOSWITCH */
  #ifdef CONFIG_DRIVER_ATHEROS
  /* driver_atheros.c */
  extern const struct wpa_driver_ops wpa_driver_atheros_ops;
  #endif /* CONFIG_DRIVER_ATHEROS */
  #ifdef CONFIG_DRIVER_NONE
  extern const struct wpa_driver_ops wpa_driver_none_ops; /* driver_none.c */
  #endif /* CONFIG_DRIVER_NONE */
  
  #endif /* DRIVER_H */
  