mac80211.h

来自「linux 内核源代码」· C头文件 代码 · 共 1,410 行 · 第 1/4 页

};

/**
 * enum ieee80211_tx_status_flags - transmit status flags
 *
 * Status flags to indicate various transmit conditions.
 *
 * @IEEE80211_TX_STATUS_TX_FILTERED: The frame was not transmitted
 *	because the destination STA was in powersave mode.
 *
 * @IEEE80211_TX_STATUS_ACK: Frame was acknowledged
 */
enum ieee80211_tx_status_flags {
	IEEE80211_TX_STATUS_TX_FILTERED	= 1<<0,
	IEEE80211_TX_STATUS_ACK		= 1<<1,
};

/**
 * struct ieee80211_tx_status - transmit status
 *
 * As much information as possible should be provided for each transmitted
 * frame with ieee80211_tx_status().
 *
 * @control: a copy of the &struct ieee80211_tx_control passed to the driver
 *	in the tx() callback.
 *
 * @flags: transmit status flags, defined above
 *
 * @ack_signal: signal strength of the ACK frame
 *
 * @excessive_retries: set to 1 if the frame was retried many times
 *	but not acknowledged
 *
 * @retry_count: number of retries
 *
 * @queue_length: ?? REMOVE
 * @queue_number: ?? REMOVE
 */
struct ieee80211_tx_status {
	struct ieee80211_tx_control control;
	u8 flags;
	bool excessive_retries;
	u8 retry_count;
	int ack_signal;
	int queue_length;
	int queue_number;
};

/**
 * enum ieee80211_conf_flags - configuration flags
 *
 * Flags to define PHY configuration options
 *
 * @IEEE80211_CONF_SHORT_SLOT_TIME: use 802.11g short slot time
 * @IEEE80211_CONF_RADIOTAP: add radiotap header at receive time (if supported)
 *
 */
enum ieee80211_conf_flags {
	IEEE80211_CONF_SHORT_SLOT_TIME	= 1<<0,
	IEEE80211_CONF_RADIOTAP		= 1<<1,
};

/**
 * struct ieee80211_conf - configuration of the device
 *
 * This struct indicates how the driver shall configure the hardware.
 *
 * @radio_enabled: when zero, driver is required to switch off the radio.
 *	TODO make a flag
 * @channel: IEEE 802.11 channel number
 * @freq: frequency in MHz
 * @channel_val: hardware specific channel value for the channel
 * @phymode: PHY mode to activate (REMOVE)
 * @chan: channel to switch to, pointer to the channel information
 * @mode: pointer to mode definition
 * @regulatory_domain: ??
 * @beacon_int: beacon interval (TODO make interface config)
 * @flags: configuration flags defined above
 * @power_level: transmit power limit for current regulatory domain in dBm
 * @antenna_max: maximum antenna gain
 * @antenna_sel_tx: transmit antenna selection, 0: default/diversity,
 *	1/2: antenna 0/1
 * @antenna_sel_rx: receive antenna selection, like @antenna_sel_tx
 */
struct ieee80211_conf {
	int channel;			/* IEEE 802.11 channel number */
	int freq;			/* MHz */
	int channel_val;		/* hw specific value for the channel */

	enum ieee80211_phymode phymode;
	struct ieee80211_channel *chan;
	struct ieee80211_hw_mode *mode;
	unsigned int regulatory_domain;
	int radio_enabled;

	int beacon_int;
	u32 flags;
	u8 power_level;
	u8 antenna_max;
	u8 antenna_sel_tx;
	u8 antenna_sel_rx;
};

/**
 * enum ieee80211_if_types - types of 802.11 network interfaces
 *
 * @IEEE80211_IF_TYPE_INVALID: invalid interface type, not used
 *	by mac80211 itself
 * @IEEE80211_IF_TYPE_AP: interface in AP mode.
 * @IEEE80211_IF_TYPE_MGMT: special interface for communication with hostap
 *	daemon. Drivers should never see this type.
 * @IEEE80211_IF_TYPE_STA: interface in STA (client) mode.
 * @IEEE80211_IF_TYPE_IBSS: interface in IBSS (ad-hoc) mode.
 * @IEEE80211_IF_TYPE_MNTR: interface in monitor (rfmon) mode.
 * @IEEE80211_IF_TYPE_WDS: interface in WDS mode.
 * @IEEE80211_IF_TYPE_VLAN: VLAN interface bound to an AP, drivers
 *	will never see this type.
 */
enum ieee80211_if_types {
	IEEE80211_IF_TYPE_INVALID,
	IEEE80211_IF_TYPE_AP,
	IEEE80211_IF_TYPE_STA,
	IEEE80211_IF_TYPE_IBSS,
	IEEE80211_IF_TYPE_MNTR,
	IEEE80211_IF_TYPE_WDS,
	IEEE80211_IF_TYPE_VLAN,
};

/**
 * struct ieee80211_if_init_conf - initial configuration of an interface
 *
 * @if_id: internal interface ID. This number has no particular meaning to
 *	drivers and the only allowed usage is to pass it to
 *	ieee80211_beacon_get() and ieee80211_get_buffered_bc() functions.
 *	This field is not valid for monitor interfaces
 *	(interfaces of %IEEE80211_IF_TYPE_MNTR type).
 * @type: one of &enum ieee80211_if_types constants. Determines the type of
 *	added/removed interface.
 * @mac_addr: pointer to MAC address of the interface. This pointer is valid
 *	until the interface is removed (i.e. it cannot be used after
 *	remove_interface() callback was called for this interface).
 *
 * This structure is used in add_interface() and remove_interface()
 * callbacks of &struct ieee80211_hw.
 *
 * When you allow multiple interfaces to be added to your PHY, take care
 * that the hardware can actually handle multiple MAC addresses. However,
 * also take care that when there's no interface left with mac_addr != %NULL
 * you remove the MAC address from the device to avoid acknowledging packets
 * in pure monitor mode.
 */
struct ieee80211_if_init_conf {
	int if_id;
	enum ieee80211_if_types type;
	void *mac_addr;
};

/**
 * struct ieee80211_if_conf - configuration of an interface
 *
 * @type: type of the interface. This is always the same as was specified in
 *	&struct ieee80211_if_init_conf. The type of an interface never changes
 *	during the life of the interface; this field is present only for
 *	convenience.
 * @bssid: BSSID of the network we are associated to/creating.
 * @ssid: used (together with @ssid_len) by drivers for hardware that
 *	generate beacons independently. The pointer is valid only during the
 *	config_interface() call, so copy the value somewhere if you need
 *	it.
 * @ssid_len: length of the @ssid field.
 * @beacon: beacon template. Valid only if @host_gen_beacon_template in
 *	&struct ieee80211_hw is set. The driver is responsible of freeing
 *	the sk_buff.
 * @beacon_control: tx_control for the beacon template, this field is only
 *	valid when the @beacon field was set.
 *
 * This structure is passed to the config_interface() callback of
 * &struct ieee80211_hw.
 */
struct ieee80211_if_conf {
	int type;
	u8 *bssid;
	u8 *ssid;
	size_t ssid_len;
	struct sk_buff *beacon;
	struct ieee80211_tx_control *beacon_control;
};

/**
 * enum ieee80211_key_alg - key algorithm
 * @ALG_WEP: WEP40 or WEP104
 * @ALG_TKIP: TKIP
 * @ALG_CCMP: CCMP (AES)
 */
enum ieee80211_key_alg {
	ALG_WEP,
	ALG_TKIP,
	ALG_CCMP,
};


/**
 * enum ieee80211_key_flags - key flags
 *
 * These flags are used for communication about keys between the driver
 * and mac80211, with the @flags parameter of &struct ieee80211_key_conf.
 *
 * @IEEE80211_KEY_FLAG_WMM_STA: Set by mac80211, this flag indicates
 *	that the STA this key will be used with could be using QoS.
 * @IEEE80211_KEY_FLAG_GENERATE_IV: This flag should be set by the
 *	driver to indicate that it requires IV generation for this
 *	particular key.
 * @IEEE80211_KEY_FLAG_GENERATE_MMIC: This flag should be set by
 *	the driver for a TKIP key if it requires Michael MIC
 *	generation in software.
 */
enum ieee80211_key_flags {
	IEEE80211_KEY_FLAG_WMM_STA	= 1<<0,
	IEEE80211_KEY_FLAG_GENERATE_IV	= 1<<1,
	IEEE80211_KEY_FLAG_GENERATE_MMIC= 1<<2,
};

/**
 * struct ieee80211_key_conf - key information
 *
 * This key information is given by mac80211 to the driver by
 * the set_key() callback in &struct ieee80211_ops.
 *
 * @hw_key_idx: To be set by the driver, this is the key index the driver
 *	wants to be given when a frame is transmitted and needs to be
 *	encrypted in hardware.
 * @alg: The key algorithm.
 * @flags: key flags, see &enum ieee80211_key_flags.
 * @keyidx: the key index (0-3)
 * @keylen: key material length
 * @key: key material
 */
struct ieee80211_key_conf {
	enum ieee80211_key_alg alg;
	u8 hw_key_idx;
	u8 flags;
	s8 keyidx;
	u8 keylen;
	u8 key[0];
};

#define IEEE80211_SEQ_COUNTER_RX	0
#define IEEE80211_SEQ_COUNTER_TX	1

/**
 * enum set_key_cmd - key command
 *
 * Used with the set_key() callback in &struct ieee80211_ops, this
 * indicates whether a key is being removed or added.
 *
 * @SET_KEY: a key is set
 * @DISABLE_KEY: a key must be disabled
 */
enum set_key_cmd {
	SET_KEY, DISABLE_KEY,
};

/**
 * enum sta_notify_cmd - sta notify command
 *
 * Used with the sta_notify() callback in &struct ieee80211_ops, this
 * indicates addition and removal of a station to station table
 *
 * @STA_NOTIFY_ADD: a station was added to the station table
 * @STA_NOTIFY_REMOVE: a station being removed from the station table
 */
enum sta_notify_cmd {
	STA_NOTIFY_ADD, STA_NOTIFY_REMOVE
};

/**
 * enum ieee80211_hw_flags - hardware flags
 *
 * These flags are used to indicate hardware capabilities to
 * the stack. Generally, flags here should have their meaning
 * done in a way that the simplest hardware doesn't need setting
 * any particular flags. There are some exceptions to this rule,
 * however, so you are advised to review these flags carefully.
 *
 * @IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE:
 *	The device only needs to be supplied with a beacon template.
 *	If you need the host to generate each beacon then don't use
 *	this flag and call ieee80211_beacon_get() when you need the
 *	next beacon frame. Note that if you set this flag, you must
 *	implement the set_tim() callback for powersave mode to work
 *	properly.
 *	This flag is only relevant for access-point mode.
 *
 * @IEEE80211_HW_RX_INCLUDES_FCS:
 *	Indicates that received frames passed to the stack include
 *	the FCS at the end.
 *
 * @IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING:
 *	Some wireless LAN chipsets buffer broadcast/multicast frames
 *	for power saving stations in the hardware/firmware and others
 *	rely on the host system for such buffering. This option is used
 *	to configure the IEEE 802.11 upper layer to buffer broadcast and
 *	multicast frames when there are power saving stations so that
 *	the driver can fetch them with ieee80211_get_buffered_bc(). Note
 *	that not setting this flag works properly only when the
 *	%IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE is also not set because
 *	otherwise the stack will not know when the DTIM beacon was sent.
 *
 * @IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED:
 *	Channels are already configured to the default regulatory domain
 *	specified in the device's EEPROM
 */
enum ieee80211_hw_flags {
	IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE		= 1<<0,
	IEEE80211_HW_RX_INCLUDES_FCS			= 1<<1,
	IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING	= 1<<2,
	IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED	= 1<<3,
};

/**
 * struct ieee80211_hw - hardware information and state
 *
 * This structure contains the configuration and hardware
 * information for an 802.11 PHY.
 *
 * @wiphy: This points to the &struct wiphy allocated for this
 *	802.11 PHY. You must fill in the @perm_addr and @dev
 *	members of this structure using SET_IEEE80211_DEV()
 *	and SET_IEEE80211_PERM_ADDR().
 *
 * @conf: &struct ieee80211_conf, device configuration, don't use.
 *
 * @workqueue: single threaded workqueue available for driver use,
 *	allocated by mac80211 on registration and flushed on
 *	unregistration.
 *
 * @priv: pointer to private area that was allocated for driver use
 *	along with this structure.
 *
 * @flags: hardware flags, see &enum ieee80211_hw_flags.
 *
 * @extra_tx_headroom: headroom to reserve in each transmit skb
 *	for use by the driver (e.g. for transmit headers.)
 *
 * @channel_change_time: time (in microseconds) it takes to change channels.
 *
 * @max_rssi: Maximum value for ssi in RX information, use
 *	negative numbers for dBm and 0 to indicate no support.
 *
 * @max_signal: like @max_rssi, but for the signal value.
 *
 * @max_noise: like @max_rssi, but for the noise value.
 *