WSL2-Linux-Kernel/include/linux/nl80211.h

#ifndef __LINUX_NL80211_H
#define __LINUX_NL80211_H
/*
 * 802.11 netlink interface public header
 *
 * Copyright 2006, 2007, 2008 Johannes Berg <johannes@sipsolutions.net>
 * Copyright 2008 Michael Wu <flamingice@sourmilk.net>
 * Copyright 2008 Luis Carlos Cobo <luisca@cozybit.com>
 * Copyright 2008 Michael Buesch <mb@bu3sch.de>
 * Copyright 2008, 2009 Luis R. Rodriguez <lrodriguez@atheros.com>
 * Copyright 2008 Jouni Malinen <jouni.malinen@atheros.com>
 * Copyright 2008 Colin McCabe <colin@cozybit.com>
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 *
 */

#include <linux/types.h>

/**
 * DOC: Station handling
 *
 * Stations are added per interface, but a special case exists with VLAN
 * interfaces. When a station is bound to an AP interface, it may be moved
 * into a VLAN identified by a VLAN interface index (%NL80211_ATTR_STA_VLAN).
 * The station is still assumed to belong to the AP interface it was added
 * to.
 *
 * TODO: need more info?
 */

/**
 * enum nl80211_commands - supported nl80211 commands
 *
 * @NL80211_CMD_UNSPEC: unspecified command to catch errors
 *
 * @NL80211_CMD_GET_WIPHY: request information about a wiphy or dump request
 *	to get a list of all present wiphys.
 * @NL80211_CMD_SET_WIPHY: set wiphy parameters, needs %NL80211_ATTR_WIPHY or
 *	%NL80211_ATTR_IFINDEX; can be used to set %NL80211_ATTR_WIPHY_NAME,
 *	%NL80211_ATTR_WIPHY_TXQ_PARAMS, %NL80211_ATTR_WIPHY_FREQ,
 *	%NL80211_ATTR_WIPHY_CHANNEL_TYPE, %NL80211_ATTR_WIPHY_RETRY_SHORT,
 *	%NL80211_ATTR_WIPHY_RETRY_LONG, %NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
 *	and/or %NL80211_ATTR_WIPHY_RTS_THRESHOLD.
 * @NL80211_CMD_NEW_WIPHY: Newly created wiphy, response to get request
 *	or rename notification. Has attributes %NL80211_ATTR_WIPHY and
 *	%NL80211_ATTR_WIPHY_NAME.
 * @NL80211_CMD_DEL_WIPHY: Wiphy deleted. Has attributes
 *	%NL80211_ATTR_WIPHY and %NL80211_ATTR_WIPHY_NAME.
 *
 * @NL80211_CMD_GET_INTERFACE: Request an interface's configuration;
 *	either a dump request on a %NL80211_ATTR_WIPHY or a specific get
 *	on an %NL80211_ATTR_IFINDEX is supported.
 * @NL80211_CMD_SET_INTERFACE: Set type of a virtual interface, requires
 *	%NL80211_ATTR_IFINDEX and %NL80211_ATTR_IFTYPE.
 * @NL80211_CMD_NEW_INTERFACE: Newly created virtual interface or response
 *	to %NL80211_CMD_GET_INTERFACE. Has %NL80211_ATTR_IFINDEX,
 *	%NL80211_ATTR_WIPHY and %NL80211_ATTR_IFTYPE attributes. Can also
 *	be sent from userspace to request creation of a new virtual interface,
 *	then requires attributes %NL80211_ATTR_WIPHY, %NL80211_ATTR_IFTYPE and
 *	%NL80211_ATTR_IFNAME.
 * @NL80211_CMD_DEL_INTERFACE: Virtual interface was deleted, has attributes
 *	%NL80211_ATTR_IFINDEX and %NL80211_ATTR_WIPHY. Can also be sent from
 *	userspace to request deletion of a virtual interface, then requires
 *	attribute %NL80211_ATTR_IFINDEX.
 *
 * @NL80211_CMD_GET_KEY: Get sequence counter information for a key specified
 *	by %NL80211_ATTR_KEY_IDX and/or %NL80211_ATTR_MAC.
 * @NL80211_CMD_SET_KEY: Set key attributes %NL80211_ATTR_KEY_DEFAULT,
 *	%NL80211_ATTR_KEY_DEFAULT_MGMT, or %NL80211_ATTR_KEY_THRESHOLD.
 * @NL80211_CMD_NEW_KEY: add a key with given %NL80211_ATTR_KEY_DATA,
 *	%NL80211_ATTR_KEY_IDX, %NL80211_ATTR_MAC, %NL80211_ATTR_KEY_CIPHER,
 *	and %NL80211_ATTR_KEY_SEQ attributes.
 * @NL80211_CMD_DEL_KEY: delete a key identified by %NL80211_ATTR_KEY_IDX
 *	or %NL80211_ATTR_MAC.
 *
 * @NL80211_CMD_GET_BEACON: retrieve beacon information (returned in a
 *	%NL80222_CMD_NEW_BEACON message)
 * @NL80211_CMD_SET_BEACON: set the beacon on an access point interface
 *	using the %NL80211_ATTR_BEACON_INTERVAL, %NL80211_ATTR_DTIM_PERIOD,
 *	%NL80211_ATTR_BEACON_HEAD and %NL80211_ATTR_BEACON_TAIL attributes.
 * @NL80211_CMD_NEW_BEACON: add a new beacon to an access point interface,
 *	parameters are like for %NL80211_CMD_SET_BEACON.
 * @NL80211_CMD_DEL_BEACON: remove the beacon, stop sending it
 *
 * @NL80211_CMD_GET_STATION: Get station attributes for station identified by
 *	%NL80211_ATTR_MAC on the interface identified by %NL80211_ATTR_IFINDEX.
 * @NL80211_CMD_SET_STATION: Set station attributes for station identified by
 *	%NL80211_ATTR_MAC on the interface identified by %NL80211_ATTR_IFINDEX.
 * @NL80211_CMD_NEW_STATION: Add a station with given attributes to the
 *	the interface identified by %NL80211_ATTR_IFINDEX.
 * @NL80211_CMD_DEL_STATION: Remove a station identified by %NL80211_ATTR_MAC
 *	or, if no MAC address given, all stations, on the interface identified
 *	by %NL80211_ATTR_IFINDEX.
 *
 * @NL80211_CMD_GET_MPATH: Get mesh path attributes for mesh path to
 * 	destination %NL80211_ATTR_MAC on the interface identified by
 * 	%NL80211_ATTR_IFINDEX.
 * @NL80211_CMD_SET_MPATH:  Set mesh path attributes for mesh path to
 * 	destination %NL80211_ATTR_MAC on the interface identified by
 * 	%NL80211_ATTR_IFINDEX.
 * @NL80211_CMD_NEW_PATH: Add a mesh path with given attributes to the
 *	the interface identified by %NL80211_ATTR_IFINDEX.
 * @NL80211_CMD_DEL_PATH: Remove a mesh path identified by %NL80211_ATTR_MAC
 *	or, if no MAC address given, all mesh paths, on the interface identified
 *	by %NL80211_ATTR_IFINDEX.
 * @NL80211_CMD_SET_BSS: Set BSS attributes for BSS identified by
 *	%NL80211_ATTR_IFINDEX.
 *
 * @NL80211_CMD_GET_REG: ask the wireless core to send us its currently set
 * 	regulatory domain.
 * @NL80211_CMD_SET_REG: Set current regulatory domain. CRDA sends this command
 *	after being queried by the kernel. CRDA replies by sending a regulatory
 *	domain structure which consists of %NL80211_ATTR_REG_ALPHA set to our
 *	current alpha2 if it found a match. It also provides
 * 	NL80211_ATTR_REG_RULE_FLAGS, and a set of regulatory rules. Each
 * 	regulatory rule is a nested set of attributes  given by
 * 	%NL80211_ATTR_REG_RULE_FREQ_[START|END] and
 * 	%NL80211_ATTR_FREQ_RANGE_MAX_BW with an attached power rule given by
 * 	%NL80211_ATTR_REG_RULE_POWER_MAX_ANT_GAIN and
 * 	%NL80211_ATTR_REG_RULE_POWER_MAX_EIRP.
 * @NL80211_CMD_REQ_SET_REG: ask the wireless core to set the regulatory domain
 * 	to the the specified ISO/IEC 3166-1 alpha2 country code. The core will
 * 	store this as a valid request and then query userspace for it.
 *
 * @NL80211_CMD_GET_MESH_PARAMS: Get mesh networking properties for the
 *	interface identified by %NL80211_ATTR_IFINDEX
 *
 * @NL80211_CMD_SET_MESH_PARAMS: Set mesh networking properties for the
 *      interface identified by %NL80211_ATTR_IFINDEX
 *
 * @NL80211_CMD_SET_MGMT_EXTRA_IE: Set extra IEs for management frames. The
 *	interface is identified with %NL80211_ATTR_IFINDEX and the management
 *	frame subtype with %NL80211_ATTR_MGMT_SUBTYPE. The extra IE data to be
 *	added to the end of the specified management frame is specified with
 *	%NL80211_ATTR_IE. If the command succeeds, the requested data will be
 *	added to all specified management frames generated by
 *	kernel/firmware/driver.
 *	Note: This command has been removed and it is only reserved at this
 *	point to avoid re-using existing command number. The functionality this
 *	command was planned for has been provided with cleaner design with the
 *	option to specify additional IEs in NL80211_CMD_TRIGGER_SCAN,
 *	NL80211_CMD_AUTHENTICATE, NL80211_CMD_ASSOCIATE,
 *	NL80211_CMD_DEAUTHENTICATE, and NL80211_CMD_DISASSOCIATE.
 *
 * @NL80211_CMD_GET_SCAN: get scan results
 * @NL80211_CMD_TRIGGER_SCAN: trigger a new scan with the given parameters
 * @NL80211_CMD_NEW_SCAN_RESULTS: scan notification (as a reply to
 *	NL80211_CMD_GET_SCAN and on the "scan" multicast group)
 * @NL80211_CMD_SCAN_ABORTED: scan was aborted, for unspecified reasons,
 *	partial scan results may be available
 *
 * @NL80211_CMD_REG_CHANGE: indicates to userspace the regulatory domain
 * 	has been changed and provides details of the request information
 * 	that caused the change such as who initiated the regulatory request
 * 	(%NL80211_ATTR_REG_INITIATOR), the wiphy_idx
 * 	(%NL80211_ATTR_REG_ALPHA2) on which the request was made from if
 * 	the initiator was %NL80211_REGDOM_SET_BY_COUNTRY_IE or
 * 	%NL80211_REGDOM_SET_BY_DRIVER, the type of regulatory domain
 * 	set (%NL80211_ATTR_REG_TYPE), if the type of regulatory domain is
 * 	%NL80211_REG_TYPE_COUNTRY the alpha2 to which we have moved on
 * 	to (%NL80211_ATTR_REG_ALPHA2).
 * @NL80211_CMD_REG_BEACON_HINT: indicates to userspace that an AP beacon
 * 	has been found while world roaming thus enabling active scan or
 * 	any mode of operation that initiates TX (beacons) on a channel
 * 	where we would not have been able to do either before. As an example
 * 	if you are world roaming (regulatory domain set to world or if your
 * 	driver is using a custom world roaming regulatory domain) and while
 * 	doing a passive scan on the 5 GHz band you find an AP there (if not
 * 	on a DFS channel) you will now be able to actively scan for that AP
 * 	or use AP mode on your card on that same channel. Note that this will
 * 	never be used for channels 1-11 on the 2 GHz band as they are always
 * 	enabled world wide. This beacon hint is only sent if your device had
 * 	either disabled active scanning or beaconing on a channel. We send to
 * 	userspace the wiphy on which we removed a restriction from
 * 	(%NL80211_ATTR_WIPHY) and the channel on which this occurred
 * 	before (%NL80211_ATTR_FREQ_BEFORE) and after (%NL80211_ATTR_FREQ_AFTER)
 * 	the beacon hint was processed.
 *
 * @NL80211_CMD_AUTHENTICATE: authentication request and notification.
 *	This command is used both as a command (request to authenticate) and
 *	as an event on the "mlme" multicast group indicating completion of the
 *	authentication process.
 *	When used as a command, %NL80211_ATTR_IFINDEX is used to identify the
 *	interface. %NL80211_ATTR_MAC is used to specify PeerSTAAddress (and
 *	BSSID in case of station mode). %NL80211_ATTR_SSID is used to specify
 *	the SSID (mainly for association, but is included in authentication
 *	request, too, to help BSS selection. %NL80211_ATTR_WIPHY_FREQ is used
 *	to specify the frequence of the channel in MHz. %NL80211_ATTR_AUTH_TYPE
 *	is used to specify the authentication type. %NL80211_ATTR_IE is used to
 *	define IEs (VendorSpecificInfo, but also including RSN IE and FT IEs)
 *	to be added to the frame.
 *	When used as an event, this reports reception of an Authentication
 *	frame in station and IBSS modes when the local MLME processed the
 *	frame, i.e., it was for the local STA and was received in correct
 *	state. This is similar to MLME-AUTHENTICATE.confirm primitive in the
 *	MLME SAP interface (kernel providing MLME, userspace SME). The
 *	included %NL80211_ATTR_FRAME attribute contains the management frame
 *	(including both the header and frame body, but not FCS). This event is
 *	also used to indicate if the authentication attempt timed out. In that
 *	case the %NL80211_ATTR_FRAME attribute is replaced with a
 *	%NL80211_ATTR_TIMED_OUT flag (and %NL80211_ATTR_MAC to indicate which
 *	pending authentication timed out).
 * @NL80211_CMD_ASSOCIATE: association request and notification; like
 *	NL80211_CMD_AUTHENTICATE but for Association and Reassociation
 *	(similar to MLME-ASSOCIATE.request, MLME-REASSOCIATE.request,
 *	MLME-ASSOCIATE.confirm or MLME-REASSOCIATE.confirm primitives).
 * @NL80211_CMD_DEAUTHENTICATE: deauthentication request and notification; like
 *	NL80211_CMD_AUTHENTICATE but for Deauthentication frames (similar to
 *	MLME-DEAUTHENTICATION.request and MLME-DEAUTHENTICATE.indication
 *	primitives).
 * @NL80211_CMD_DISASSOCIATE: disassociation request and notification; like
 *	NL80211_CMD_AUTHENTICATE but for Disassociation frames (similar to
 *	MLME-DISASSOCIATE.request and MLME-DISASSOCIATE.indication primitives).
 *
 * @NL80211_CMD_MICHAEL_MIC_FAILURE: notification of a locally detected Michael
 *	MIC (part of TKIP) failure; sent on the "mlme" multicast group; the
 *	event includes %NL80211_ATTR_MAC to describe the source MAC address of
 *	the frame with invalid MIC, %NL80211_ATTR_KEY_TYPE to show the key
 *	type, %NL80211_ATTR_KEY_IDX to indicate the key identifier, and
 *	%NL80211_ATTR_KEY_SEQ to indicate the TSC value of the frame; this
 *	event matches with MLME-MICHAELMICFAILURE.indication() primitive
 *
 * @NL80211_CMD_JOIN_IBSS: Join a new IBSS -- given at least an SSID and a
 *	FREQ attribute (for the initial frequency if no peer can be found)
 *	and optionally a MAC (as BSSID) and FREQ_FIXED attribute if those
 *	should be fixed rather than automatically determined. Can only be
 *	executed on a network interface that is UP, and fixed BSSID/FREQ
 *	may be rejected. Another optional parameter is the beacon interval,
 *	given in the %NL80211_ATTR_BEACON_INTERVAL attribute, which if not
 *	given defaults to 100 TU (102.4ms).
 * @NL80211_CMD_LEAVE_IBSS: Leave the IBSS -- no special arguments, the IBSS is
 *	determined by the network interface.
 *
 * @NL80211_CMD_TESTMODE: testmode command, takes a wiphy (or ifindex) attribute
 *	to identify the device, and the TESTDATA blob attribute to pass through
 *	to the driver.
 *
 * @NL80211_CMD_CONNECT: connection request and notification; this command
 *	requests to connect to a specified network but without separating
 *	auth and assoc steps. For this, you need to specify the SSID in a
 *	%NL80211_ATTR_SSID attribute, and can optionally specify the association
 *	IEs in %NL80211_ATTR_IE, %NL80211_ATTR_AUTH_TYPE, %NL80211_ATTR_MAC,
 *	%NL80211_ATTR_WIPHY_FREQ and %NL80211_ATTR_CONTROL_PORT.
 *	It is also sent as an event, with the BSSID and response IEs when the
 *	connection is established or failed to be established. This can be
 *	determined by the STATUS_CODE attribute.
 * @NL80211_CMD_ROAM: request that the card roam (currently not implemented),
 *	sent as an event when the card/driver roamed by itself.
 * @NL80211_CMD_DISCONNECT: drop a given connection; also used to notify
 *	userspace that a connection was dropped by the AP or due to other
 *	reasons, for this the %NL80211_ATTR_DISCONNECTED_BY_AP and
 *	%NL80211_ATTR_REASON_CODE attributes are used.
 *
 * @NL80211_CMD_SET_WIPHY_NETNS: Set a wiphy's netns. Note that all devices
 *	associated with this wiphy must be down and will follow.
 *
 * @NL80211_CMD_MAX: highest used command number
 * @__NL80211_CMD_AFTER_LAST: internal use
 */
enum nl80211_commands {
/* don't change the order or add anything inbetween, this is ABI! */
	NL80211_CMD_UNSPEC,

	NL80211_CMD_GET_WIPHY,		/* can dump */
	NL80211_CMD_SET_WIPHY,
	NL80211_CMD_NEW_WIPHY,
	NL80211_CMD_DEL_WIPHY,

	NL80211_CMD_GET_INTERFACE,	/* can dump */
	NL80211_CMD_SET_INTERFACE,
	NL80211_CMD_NEW_INTERFACE,
	NL80211_CMD_DEL_INTERFACE,

	NL80211_CMD_GET_KEY,
	NL80211_CMD_SET_KEY,
	NL80211_CMD_NEW_KEY,
	NL80211_CMD_DEL_KEY,

	NL80211_CMD_GET_BEACON,
	NL80211_CMD_SET_BEACON,
	NL80211_CMD_NEW_BEACON,
	NL80211_CMD_DEL_BEACON,

	NL80211_CMD_GET_STATION,
	NL80211_CMD_SET_STATION,
	NL80211_CMD_NEW_STATION,
	NL80211_CMD_DEL_STATION,

	NL80211_CMD_GET_MPATH,
	NL80211_CMD_SET_MPATH,
	NL80211_CMD_NEW_MPATH,
	NL80211_CMD_DEL_MPATH,

	NL80211_CMD_SET_BSS,

	NL80211_CMD_SET_REG,
	NL80211_CMD_REQ_SET_REG,

	NL80211_CMD_GET_MESH_PARAMS,
	NL80211_CMD_SET_MESH_PARAMS,

	NL80211_CMD_SET_MGMT_EXTRA_IE /* reserved; not used */,

	NL80211_CMD_GET_REG,

	NL80211_CMD_GET_SCAN,
	NL80211_CMD_TRIGGER_SCAN,
	NL80211_CMD_NEW_SCAN_RESULTS,
	NL80211_CMD_SCAN_ABORTED,

	NL80211_CMD_REG_CHANGE,

	NL80211_CMD_AUTHENTICATE,
	NL80211_CMD_ASSOCIATE,
	NL80211_CMD_DEAUTHENTICATE,
	NL80211_CMD_DISASSOCIATE,

	NL80211_CMD_MICHAEL_MIC_FAILURE,

	NL80211_CMD_REG_BEACON_HINT,

	NL80211_CMD_JOIN_IBSS,
	NL80211_CMD_LEAVE_IBSS,

	NL80211_CMD_TESTMODE,

	NL80211_CMD_CONNECT,
	NL80211_CMD_ROAM,
	NL80211_CMD_DISCONNECT,

	NL80211_CMD_SET_WIPHY_NETNS,

	/* add new commands above here */

	/* used to define NL80211_CMD_MAX below */
	__NL80211_CMD_AFTER_LAST,
	NL80211_CMD_MAX = __NL80211_CMD_AFTER_LAST - 1
};

/*
 * Allow user space programs to use #ifdef on new commands by defining them
 * here
 */
#define NL80211_CMD_SET_BSS NL80211_CMD_SET_BSS
#define NL80211_CMD_SET_MGMT_EXTRA_IE NL80211_CMD_SET_MGMT_EXTRA_IE
#define NL80211_CMD_REG_CHANGE NL80211_CMD_REG_CHANGE
#define NL80211_CMD_AUTHENTICATE NL80211_CMD_AUTHENTICATE
#define NL80211_CMD_ASSOCIATE NL80211_CMD_ASSOCIATE
#define NL80211_CMD_DEAUTHENTICATE NL80211_CMD_DEAUTHENTICATE
#define NL80211_CMD_DISASSOCIATE NL80211_CMD_DISASSOCIATE
#define NL80211_CMD_REG_BEACON_HINT NL80211_CMD_REG_BEACON_HINT

/**
 * enum nl80211_attrs - nl80211 netlink attributes
 *
 * @NL80211_ATTR_UNSPEC: unspecified attribute to catch errors
 *
 * @NL80211_ATTR_WIPHY: index of wiphy to operate on, cf.
 *	/sys/class/ieee80211/<phyname>/index
 * @NL80211_ATTR_WIPHY_NAME: wiphy name (used for renaming)
 * @NL80211_ATTR_WIPHY_TXQ_PARAMS: a nested array of TX queue parameters
 * @NL80211_ATTR_WIPHY_FREQ: frequency of the selected channel in MHz
 * @NL80211_ATTR_WIPHY_CHANNEL_TYPE: included with NL80211_ATTR_WIPHY_FREQ
 *	if HT20 or HT40 are allowed (i.e., 802.11n disabled if not included):
 *	NL80211_CHAN_NO_HT = HT not allowed (i.e., same as not including
 *		this attribute)
 *	NL80211_CHAN_HT20 = HT20 only
 *	NL80211_CHAN_HT40MINUS = secondary channel is below the primary channel
 *	NL80211_CHAN_HT40PLUS = secondary channel is above the primary channel
 * @NL80211_ATTR_WIPHY_RETRY_SHORT: TX retry limit for frames whose length is
 *	less than or equal to the RTS threshold; allowed range: 1..255;
 *	dot11ShortRetryLimit; u8
 * @NL80211_ATTR_WIPHY_RETRY_LONG: TX retry limit for frames whose length is
 *	greater than the RTS threshold; allowed range: 1..255;
 *	dot11ShortLongLimit; u8
 * @NL80211_ATTR_WIPHY_FRAG_THRESHOLD: fragmentation threshold, i.e., maximum
 *	length in octets for frames; allowed range: 256..8000, disable
 *	fragmentation with (u32)-1; dot11FragmentationThreshold; u32
 * @NL80211_ATTR_WIPHY_RTS_THRESHOLD: RTS threshold (TX frames with length
 *	larger than or equal to this use RTS/CTS handshake); allowed range:
 *	0..65536, disable with (u32)-1; dot11RTSThreshold; u32
 *
 * @NL80211_ATTR_IFINDEX: network interface index of the device to operate on
 * @NL80211_ATTR_IFNAME: network interface name
 * @NL80211_ATTR_IFTYPE: type of virtual interface, see &enum nl80211_iftype
 *
 * @NL80211_ATTR_MAC: MAC address (various uses)
 *
 * @NL80211_ATTR_KEY_DATA: (temporal) key data; for TKIP this consists of
 *	16 bytes encryption key followed by 8 bytes each for TX and RX MIC
 *	keys
 * @NL80211_ATTR_KEY_IDX: key ID (u8, 0-3)
 * @NL80211_ATTR_KEY_CIPHER: key cipher suite (u32, as defined by IEEE 802.11
 *	section 7.3.2.25.1, e.g. 0x000FAC04)
 * @NL80211_ATTR_KEY_SEQ: transmit key sequence number (IV/PN) for TKIP and
 *	CCMP keys, each six bytes in little endian
 *
 * @NL80211_ATTR_BEACON_INTERVAL: beacon interval in TU
 * @NL80211_ATTR_DTIM_PERIOD: DTIM period for beaconing
 * @NL80211_ATTR_BEACON_HEAD: portion of the beacon before the TIM IE
 * @NL80211_ATTR_BEACON_TAIL: portion of the beacon after the TIM IE
 *
 * @NL80211_ATTR_STA_AID: Association ID for the station (u16)
 * @NL80211_ATTR_STA_FLAGS: flags, nested element with NLA_FLAG attributes of
 *	&enum nl80211_sta_flags (deprecated, use %NL80211_ATTR_STA_FLAGS2)
 * @NL80211_ATTR_STA_LISTEN_INTERVAL: listen interval as defined by
 *	IEEE 802.11 7.3.1.6 (u16).
 * @NL80211_ATTR_STA_SUPPORTED_RATES: supported rates, array of supported
 *	rates as defined by IEEE 802.11 7.3.2.2 but without the length
 *	restriction (at most %NL80211_MAX_SUPP_RATES).
 * @NL80211_ATTR_STA_VLAN: interface index of VLAN interface to move station
 *	to, or the AP interface the station was originally added to to.
 * @NL80211_ATTR_STA_INFO: information about a station, part of station info
 *	given for %NL80211_CMD_GET_STATION, nested attribute containing
 *	info as possible, see &enum nl80211_sta_info.
 *
 * @NL80211_ATTR_WIPHY_BANDS: Information about an operating bands,
 *	consisting of a nested array.
 *
 * @NL80211_ATTR_MESH_ID: mesh id (1-32 bytes).
 * @NL80211_ATTR_PLINK_ACTION: action to perform on the mesh peer link.
 * @NL80211_ATTR_MPATH_NEXT_HOP: MAC address of the next hop for a mesh path.
 * @NL80211_ATTR_MPATH_INFO: information about a mesh_path, part of mesh path
 * 	info given for %NL80211_CMD_GET_MPATH, nested attribute described at
 *	&enum nl80211_mpath_info.
 *
 * @NL80211_ATTR_MNTR_FLAGS: flags, nested element with NLA_FLAG attributes of
 *      &enum nl80211_mntr_flags.
 *
 * @NL80211_ATTR_REG_ALPHA2: an ISO-3166-alpha2 country code for which the
 * 	current regulatory domain should be set to or is already set to.
 * 	For example, 'CR', for Costa Rica. This attribute is used by the kernel
 * 	to query the CRDA to retrieve one regulatory domain. This attribute can
 * 	also be used by userspace to query the kernel for the currently set
 * 	regulatory domain. We chose an alpha2 as that is also used by the
 * 	IEEE-802.11d country information element to identify a country.
 * 	Users can also simply ask the wireless core to set regulatory domain
 * 	to a specific alpha2.
 * @NL80211_ATTR_REG_RULES: a nested array of regulatory domain regulatory
 *	rules.
 *
 * @NL80211_ATTR_BSS_CTS_PROT: whether CTS protection is enabled (u8, 0 or 1)
 * @NL80211_ATTR_BSS_SHORT_PREAMBLE: whether short preamble is enabled
 *	(u8, 0 or 1)
 * @NL80211_ATTR_BSS_SHORT_SLOT_TIME: whether short slot time enabled
 *	(u8, 0 or 1)
 * @NL80211_ATTR_BSS_BASIC_RATES: basic rates, array of basic
 *	rates in format defined by IEEE 802.11 7.3.2.2 but without the length
 *	restriction (at most %NL80211_MAX_SUPP_RATES).
 *
 * @NL80211_ATTR_HT_CAPABILITY: HT Capability information element (from
 *	association request when used with NL80211_CMD_NEW_STATION)
 *
 * @NL80211_ATTR_SUPPORTED_IFTYPES: nested attribute containing all
 *	supported interface types, each a flag attribute with the number
 *	of the interface mode.
 *
 * @NL80211_ATTR_MGMT_SUBTYPE: Management frame subtype for
 *	%NL80211_CMD_SET_MGMT_EXTRA_IE.
 *
 * @NL80211_ATTR_IE: Information element(s) data (used, e.g., with
 *	%NL80211_CMD_SET_MGMT_EXTRA_IE).
 *
 * @NL80211_ATTR_MAX_NUM_SCAN_SSIDS: number of SSIDs you can scan with
 *	a single scan request, a wiphy attribute.
 * @NL80211_ATTR_MAX_SCAN_IE_LEN: maximum length of information elements
 *	that can be added to a scan request
 *
 * @NL80211_ATTR_SCAN_FREQUENCIES: nested attribute with frequencies (in MHz)
 * @NL80211_ATTR_SCAN_SSIDS: nested attribute with SSIDs, leave out for passive
 *	scanning and include a zero-length SSID (wildcard) for wildcard scan
 * @NL80211_ATTR_BSS: scan result BSS
 *
 * @NL80211_ATTR_REG_INITIATOR: indicates who requested the regulatory domain
 * 	currently in effect. This could be any of the %NL80211_REGDOM_SET_BY_*
 * @NL80211_ATTR_REG_TYPE: indicates the type of the regulatory domain currently
 * 	set. This can be one of the nl80211_reg_type (%NL80211_REGDOM_TYPE_*)
 *
 * @NL80211_ATTR_SUPPORTED_COMMANDS: wiphy attribute that specifies
 *	an array of command numbers (i.e. a mapping index to command number)
 *	that the driver for the given wiphy supports.
 *
 * @NL80211_ATTR_FRAME: frame data (binary attribute), including frame header
 *	and body, but not FCS; used, e.g., with NL80211_CMD_AUTHENTICATE and
 *	NL80211_CMD_ASSOCIATE events
 * @NL80211_ATTR_SSID: SSID (binary attribute, 0..32 octets)
 * @NL80211_ATTR_AUTH_TYPE: AuthenticationType, see &enum nl80211_auth_type,
 *	represented as a u32
 * @NL80211_ATTR_REASON_CODE: ReasonCode for %NL80211_CMD_DEAUTHENTICATE and
 *	%NL80211_CMD_DISASSOCIATE, u16
 *
 * @NL80211_ATTR_KEY_TYPE: Key Type, see &enum nl80211_key_type, represented as
 *	a u32
 *
 * @NL80211_ATTR_FREQ_BEFORE: A channel which has suffered a regulatory change
 * 	due to considerations from a beacon hint. This attribute reflects
 * 	the state of the channel _before_ the beacon hint processing. This
 * 	attributes consists of a nested attribute containing
 * 	NL80211_FREQUENCY_ATTR_*
 * @NL80211_ATTR_FREQ_AFTER: A channel which has suffered a regulatory change
 * 	due to considerations from a beacon hint. This attribute reflects
 * 	the state of the channel _after_ the beacon hint processing. This
 * 	attributes consists of a nested attribute containing
 * 	NL80211_FREQUENCY_ATTR_*
 *
 * @NL80211_ATTR_CIPHER_SUITES: a set of u32 values indicating the supported
 *	cipher suites
 *
 * @NL80211_ATTR_FREQ_FIXED: a flag indicating the IBSS should not try to look
 *	for other networks on different channels
 *
 * @NL80211_ATTR_TIMED_OUT: a flag indicating than an operation timed out; this
 *	is used, e.g., with %NL80211_CMD_AUTHENTICATE event
 *
 * @NL80211_ATTR_USE_MFP: Whether management frame protection (IEEE 802.11w) is
 *	used for the association (&enum nl80211_mfp, represented as a u32);
 *	this attribute can be used
 *	with %NL80211_CMD_ASSOCIATE request
 *
 * @NL80211_ATTR_STA_FLAGS2: Attribute containing a
 *	&struct nl80211_sta_flag_update.
 *
 * @NL80211_ATTR_CONTROL_PORT: A flag indicating whether user space controls
 *	IEEE 802.1X port, i.e., sets/clears %NL80211_STA_FLAG_AUTHORIZED, in
 *	station mode. If the flag is included in %NL80211_CMD_ASSOCIATE
 *	request, the driver will assume that the port is unauthorized until
 *	authorized by user space. Otherwise, port is marked authorized by
 *	default in station mode.
 *
 * @NL80211_ATTR_TESTDATA: Testmode data blob, passed through to the driver.
 *	We recommend using nested, driver-specific attributes within this.
 *
 * @NL80211_ATTR_DISCONNECTED_BY_AP: A flag indicating that the DISCONNECT
 *	event was due to the AP disconnecting the station, and not due to
 *	a local disconnect request.
 * @NL80211_ATTR_STATUS_CODE: StatusCode for the %NL80211_CMD_CONNECT
 *	event (u16)
 * @NL80211_ATTR_PRIVACY: Flag attribute, used with connect(), indicating
 *	that protected APs should be used.
 *
 * @NL80211_ATTR_CIPHERS_PAIRWISE: Used with CONNECT and ASSOCIATE to
 *	indicate which unicast key ciphers will be used with the connection
 *	(an array of u32).
 * @NL80211_ATTR_CIPHER_GROUP: Used with CONNECT and ASSOCIATE to indicate
 *	which group key cipher will be used with the connection (a u32).
 * @NL80211_ATTR_WPA_VERSIONS: Used with CONNECT and ASSOCIATE to indicate
 *	which WPA version(s) the AP we want to associate with is using
 *	(a u32 with flags from &enum nl80211_wpa_versions).
 * @NL80211_ATTR_AKM_SUITES: Used with CONNECT and ASSOCIATE to indicate
 *	which key management algorithm(s) to use (an array of u32).
 *
 * @NL80211_ATTR_REQ_IE: (Re)association request information elements as
 *	sent out by the card, for ROAM and successful CONNECT events.
 * @NL80211_ATTR_RESP_IE: (Re)association response information elements as
 *	sent by peer, for ROAM and successful CONNECT events.
 *
 * @NL80211_ATTR_PREV_BSSID: previous BSSID, to be used by in ASSOCIATE
 *	commands to specify using a reassociate frame
 *
 * @NL80211_ATTR_KEY: key information in a nested attribute with
 *	%NL80211_KEY_* sub-attributes
 * @NL80211_ATTR_KEYS: array of keys for static WEP keys for connect()
 *	and join_ibss(), key information is in a nested attribute each
 *	with %NL80211_KEY_* sub-attributes
 *
 * @NL80211_ATTR_PID: Process ID of a network namespace.
 *
 * @NL80211_ATTR_GENERATION: Used to indicate consistent snapshots for
 *	dumps. This number increases whenever the object list being
 *	dumped changes, and as such userspace can verify that it has
 *	obtained a complete and consistent snapshot by verifying that
 *	all dump messages contain the same generation number. If it
 *	changed then the list changed and the dump should be repeated
 *	completely from scratch.
 *
 * @NL80211_ATTR_MAX: highest attribute number currently defined
 * @__NL80211_ATTR_AFTER_LAST: internal use
 */
enum nl80211_attrs {
/* don't change the order or add anything inbetween, this is ABI! */
	NL80211_ATTR_UNSPEC,

	NL80211_ATTR_WIPHY,
	NL80211_ATTR_WIPHY_NAME,

	NL80211_ATTR_IFINDEX,
	NL80211_ATTR_IFNAME,
	NL80211_ATTR_IFTYPE,

	NL80211_ATTR_MAC,

	NL80211_ATTR_KEY_DATA,
	NL80211_ATTR_KEY_IDX,
	NL80211_ATTR_KEY_CIPHER,
	NL80211_ATTR_KEY_SEQ,
	NL80211_ATTR_KEY_DEFAULT,

	NL80211_ATTR_BEACON_INTERVAL,
	NL80211_ATTR_DTIM_PERIOD,
	NL80211_ATTR_BEACON_HEAD,
	NL80211_ATTR_BEACON_TAIL,

	NL80211_ATTR_STA_AID,
	NL80211_ATTR_STA_FLAGS,
	NL80211_ATTR_STA_LISTEN_INTERVAL,
	NL80211_ATTR_STA_SUPPORTED_RATES,
	NL80211_ATTR_STA_VLAN,
	NL80211_ATTR_STA_INFO,

	NL80211_ATTR_WIPHY_BANDS,

	NL80211_ATTR_MNTR_FLAGS,

	NL80211_ATTR_MESH_ID,
	NL80211_ATTR_STA_PLINK_ACTION,
	NL80211_ATTR_MPATH_NEXT_HOP,
	NL80211_ATTR_MPATH_INFO,

	NL80211_ATTR_BSS_CTS_PROT,
	NL80211_ATTR_BSS_SHORT_PREAMBLE,
	NL80211_ATTR_BSS_SHORT_SLOT_TIME,

	NL80211_ATTR_HT_CAPABILITY,

	NL80211_ATTR_SUPPORTED_IFTYPES,

	NL80211_ATTR_REG_ALPHA2,
	NL80211_ATTR_REG_RULES,

	NL80211_ATTR_MESH_PARAMS,

	NL80211_ATTR_BSS_BASIC_RATES,

	NL80211_ATTR_WIPHY_TXQ_PARAMS,
	NL80211_ATTR_WIPHY_FREQ,
	NL80211_ATTR_WIPHY_CHANNEL_TYPE,

	NL80211_ATTR_KEY_DEFAULT_MGMT,

	NL80211_ATTR_MGMT_SUBTYPE,
	NL80211_ATTR_IE,

	NL80211_ATTR_MAX_NUM_SCAN_SSIDS,

	NL80211_ATTR_SCAN_FREQUENCIES,
	NL80211_ATTR_SCAN_SSIDS,
	NL80211_ATTR_GENERATION, /* replaces old SCAN_GENERATION */
	NL80211_ATTR_BSS,

	NL80211_ATTR_REG_INITIATOR,
	NL80211_ATTR_REG_TYPE,

	NL80211_ATTR_SUPPORTED_COMMANDS,

	NL80211_ATTR_FRAME,
	NL80211_ATTR_SSID,
	NL80211_ATTR_AUTH_TYPE,
	NL80211_ATTR_REASON_CODE,

	NL80211_ATTR_KEY_TYPE,

	NL80211_ATTR_MAX_SCAN_IE_LEN,
	NL80211_ATTR_CIPHER_SUITES,

	NL80211_ATTR_FREQ_BEFORE,
	NL80211_ATTR_FREQ_AFTER,

	NL80211_ATTR_FREQ_FIXED,


	NL80211_ATTR_WIPHY_RETRY_SHORT,
	NL80211_ATTR_WIPHY_RETRY_LONG,
	NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
	NL80211_ATTR_WIPHY_RTS_THRESHOLD,

	NL80211_ATTR_TIMED_OUT,

	NL80211_ATTR_USE_MFP,

	NL80211_ATTR_STA_FLAGS2,

	NL80211_ATTR_CONTROL_PORT,

	NL80211_ATTR_TESTDATA,

	NL80211_ATTR_PRIVACY,

	NL80211_ATTR_DISCONNECTED_BY_AP,
	NL80211_ATTR_STATUS_CODE,

	NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
	NL80211_ATTR_CIPHER_SUITE_GROUP,
	NL80211_ATTR_WPA_VERSIONS,
	NL80211_ATTR_AKM_SUITES,

	NL80211_ATTR_REQ_IE,
	NL80211_ATTR_RESP_IE,

	NL80211_ATTR_PREV_BSSID,

	NL80211_ATTR_KEY,
	NL80211_ATTR_KEYS,

	NL80211_ATTR_PID,

	/* add attributes here, update the policy in nl80211.c */

	__NL80211_ATTR_AFTER_LAST,
	NL80211_ATTR_MAX = __NL80211_ATTR_AFTER_LAST - 1
};

/* source-level API compatibility */
#define NL80211_ATTR_SCAN_GENERATION NL80211_ATTR_GENERATION

/*
 * Allow user space programs to use #ifdef on new attributes by defining them
 * here
 */
#define NL80211_CMD_CONNECT NL80211_CMD_CONNECT
#define NL80211_ATTR_HT_CAPABILITY NL80211_ATTR_HT_CAPABILITY
#define NL80211_ATTR_BSS_BASIC_RATES NL80211_ATTR_BSS_BASIC_RATES
#define NL80211_ATTR_WIPHY_TXQ_PARAMS NL80211_ATTR_WIPHY_TXQ_PARAMS
#define NL80211_ATTR_WIPHY_FREQ NL80211_ATTR_WIPHY_FREQ
#define NL80211_ATTR_WIPHY_CHANNEL_TYPE NL80211_ATTR_WIPHY_CHANNEL_TYPE
#define NL80211_ATTR_MGMT_SUBTYPE NL80211_ATTR_MGMT_SUBTYPE
#define NL80211_ATTR_IE NL80211_ATTR_IE
#define NL80211_ATTR_REG_INITIATOR NL80211_ATTR_REG_INITIATOR
#define NL80211_ATTR_REG_TYPE NL80211_ATTR_REG_TYPE
#define NL80211_ATTR_FRAME NL80211_ATTR_FRAME
#define NL80211_ATTR_SSID NL80211_ATTR_SSID
#define NL80211_ATTR_AUTH_TYPE NL80211_ATTR_AUTH_TYPE
#define NL80211_ATTR_REASON_CODE NL80211_ATTR_REASON_CODE
#define NL80211_ATTR_CIPHER_SUITES_PAIRWISE NL80211_ATTR_CIPHER_SUITES_PAIRWISE
#define NL80211_ATTR_CIPHER_SUITE_GROUP NL80211_ATTR_CIPHER_SUITE_GROUP
#define NL80211_ATTR_WPA_VERSIONS NL80211_ATTR_WPA_VERSIONS
#define NL80211_ATTR_AKM_SUITES NL80211_ATTR_AKM_SUITES
#define NL80211_ATTR_KEY NL80211_ATTR_KEY
#define NL80211_ATTR_KEYS NL80211_ATTR_KEYS

#define NL80211_MAX_SUPP_RATES			32
#define NL80211_MAX_SUPP_REG_RULES		32
#define NL80211_TKIP_DATA_OFFSET_ENCR_KEY	0
#define NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY	16
#define NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY	24
#define NL80211_HT_CAPABILITY_LEN		26

#define NL80211_MAX_NR_CIPHER_SUITES		5
#define NL80211_MAX_NR_AKM_SUITES		2

/**
 * enum nl80211_iftype - (virtual) interface types
 *
 * @NL80211_IFTYPE_UNSPECIFIED: unspecified type, driver decides
 * @NL80211_IFTYPE_ADHOC: independent BSS member
 * @NL80211_IFTYPE_STATION: managed BSS member
 * @NL80211_IFTYPE_AP: access point
 * @NL80211_IFTYPE_AP_VLAN: VLAN interface for access points
 * @NL80211_IFTYPE_WDS: wireless distribution interface
 * @NL80211_IFTYPE_MONITOR: monitor interface receiving all frames
 * @NL80211_IFTYPE_MESH_POINT: mesh point
 * @NL80211_IFTYPE_MAX: highest interface type number currently defined
 * @__NL80211_IFTYPE_AFTER_LAST: internal use
 *
 * These values are used with the %NL80211_ATTR_IFTYPE
 * to set the type of an interface.
 *
 */
enum nl80211_iftype {
	NL80211_IFTYPE_UNSPECIFIED,
	NL80211_IFTYPE_ADHOC,
	NL80211_IFTYPE_STATION,
	NL80211_IFTYPE_AP,
	NL80211_IFTYPE_AP_VLAN,
	NL80211_IFTYPE_WDS,
	NL80211_IFTYPE_MONITOR,
	NL80211_IFTYPE_MESH_POINT,

	/* keep last */
	__NL80211_IFTYPE_AFTER_LAST,
	NL80211_IFTYPE_MAX = __NL80211_IFTYPE_AFTER_LAST - 1
};

/**
 * enum nl80211_sta_flags - station flags
 *
 * Station flags. When a station is added to an AP interface, it is
 * assumed to be already associated (and hence authenticated.)
 *
 * @NL80211_STA_FLAG_AUTHORIZED: station is authorized (802.1X)
 * @NL80211_STA_FLAG_SHORT_PREAMBLE: station is capable of receiving frames
 *	with short barker preamble
 * @NL80211_STA_FLAG_WME: station is WME/QoS capable
 * @NL80211_STA_FLAG_MFP: station uses management frame protection
 */
enum nl80211_sta_flags {
	__NL80211_STA_FLAG_INVALID,
	NL80211_STA_FLAG_AUTHORIZED,
	NL80211_STA_FLAG_SHORT_PREAMBLE,
	NL80211_STA_FLAG_WME,
	NL80211_STA_FLAG_MFP,

	/* keep last */
	__NL80211_STA_FLAG_AFTER_LAST,
	NL80211_STA_FLAG_MAX = __NL80211_STA_FLAG_AFTER_LAST - 1
};

/**
 * struct nl80211_sta_flag_update - station flags mask/set
 * @mask: mask of station flags to set
 * @set: which values to set them to
 *
 * Both mask and set contain bits as per &enum nl80211_sta_flags.
 */
struct nl80211_sta_flag_update {
	__u32 mask;
	__u32 set;
} __attribute__((packed));

/**
 * enum nl80211_rate_info - bitrate information
 *
 * These attribute types are used with %NL80211_STA_INFO_TXRATE
 * when getting information about the bitrate of a station.
 *
 * @__NL80211_RATE_INFO_INVALID: attribute number 0 is reserved
 * @NL80211_RATE_INFO_BITRATE: total bitrate (u16, 100kbit/s)
 * @NL80211_RATE_INFO_MCS: mcs index for 802.11n (u8)
 * @NL80211_RATE_INFO_40_MHZ_WIDTH: 40 Mhz dualchannel bitrate
 * @NL80211_RATE_INFO_SHORT_GI: 400ns guard interval
 * @NL80211_RATE_INFO_MAX: highest rate_info number currently defined
 * @__NL80211_RATE_INFO_AFTER_LAST: internal use
 */
enum nl80211_rate_info {
	__NL80211_RATE_INFO_INVALID,
	NL80211_RATE_INFO_BITRATE,
	NL80211_RATE_INFO_MCS,
	NL80211_RATE_INFO_40_MHZ_WIDTH,
	NL80211_RATE_INFO_SHORT_GI,

	/* keep last */
	__NL80211_RATE_INFO_AFTER_LAST,
	NL80211_RATE_INFO_MAX = __NL80211_RATE_INFO_AFTER_LAST - 1
};

/**
 * enum nl80211_sta_info - station information
 *
 * These attribute types are used with %NL80211_ATTR_STA_INFO
 * when getting information about a station.
 *
 * @__NL80211_STA_INFO_INVALID: attribute number 0 is reserved
 * @NL80211_STA_INFO_INACTIVE_TIME: time since last activity (u32, msecs)
 * @NL80211_STA_INFO_RX_BYTES: total received bytes (u32, from this station)
 * @NL80211_STA_INFO_TX_BYTES: total transmitted bytes (u32, to this station)
 * @__NL80211_STA_INFO_AFTER_LAST: internal
 * @NL80211_STA_INFO_MAX: highest possible station info attribute
 * @NL80211_STA_INFO_SIGNAL: signal strength of last received PPDU (u8, dBm)
 * @NL80211_STA_INFO_TX_BITRATE: current unicast tx rate, nested attribute
 * 	containing info as possible, see &enum nl80211_sta_info_txrate.
 * @NL80211_STA_INFO_RX_PACKETS: total received packet (u32, from this station)
 * @NL80211_STA_INFO_TX_PACKETS: total transmitted packets (u32, to this
 *	station)
 */
enum nl80211_sta_info {
	__NL80211_STA_INFO_INVALID,
	NL80211_STA_INFO_INACTIVE_TIME,
	NL80211_STA_INFO_RX_BYTES,
	NL80211_STA_INFO_TX_BYTES,
	NL80211_STA_INFO_LLID,
	NL80211_STA_INFO_PLID,
	NL80211_STA_INFO_PLINK_STATE,
	NL80211_STA_INFO_SIGNAL,
	NL80211_STA_INFO_TX_BITRATE,
	NL80211_STA_INFO_RX_PACKETS,
	NL80211_STA_INFO_TX_PACKETS,

	/* keep last */
	__NL80211_STA_INFO_AFTER_LAST,
	NL80211_STA_INFO_MAX = __NL80211_STA_INFO_AFTER_LAST - 1
};

/**
 * enum nl80211_mpath_flags - nl80211 mesh path flags
 *
 * @NL80211_MPATH_FLAG_ACTIVE: the mesh path is active
 * @NL80211_MPATH_FLAG_RESOLVING: the mesh path discovery process is running
 * @NL80211_MPATH_FLAG_DSN_VALID: the mesh path contains a valid DSN
 * @NL80211_MPATH_FLAG_FIXED: the mesh path has been manually set
 * @NL80211_MPATH_FLAG_RESOLVED: the mesh path discovery process succeeded
 */
enum nl80211_mpath_flags {
	NL80211_MPATH_FLAG_ACTIVE =	1<<0,
	NL80211_MPATH_FLAG_RESOLVING =	1<<1,
	NL80211_MPATH_FLAG_DSN_VALID =	1<<2,
	NL80211_MPATH_FLAG_FIXED =	1<<3,
	NL80211_MPATH_FLAG_RESOLVED =	1<<4,
};

/**
 * enum nl80211_mpath_info - mesh path information
 *
 * These attribute types are used with %NL80211_ATTR_MPATH_INFO when getting
 * information about a mesh path.
 *
 * @__NL80211_MPATH_INFO_INVALID: attribute number 0 is reserved
 * @NL80211_ATTR_MPATH_FRAME_QLEN: number of queued frames for this destination
 * @NL80211_ATTR_MPATH_DSN: destination sequence number
 * @NL80211_ATTR_MPATH_METRIC: metric (cost) of this mesh path
 * @NL80211_ATTR_MPATH_EXPTIME: expiration time for the path, in msec from now
 * @NL80211_ATTR_MPATH_FLAGS: mesh path flags, enumerated in
 * 	&enum nl80211_mpath_flags;
 * @NL80211_ATTR_MPATH_DISCOVERY_TIMEOUT: total path discovery timeout, in msec
 * @NL80211_ATTR_MPATH_DISCOVERY_RETRIES: mesh path discovery retries
 */
enum nl80211_mpath_info {
	__NL80211_MPATH_INFO_INVALID,
	NL80211_MPATH_INFO_FRAME_QLEN,
	NL80211_MPATH_INFO_DSN,
	NL80211_MPATH_INFO_METRIC,
	NL80211_MPATH_INFO_EXPTIME,
	NL80211_MPATH_INFO_FLAGS,
	NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
	NL80211_MPATH_INFO_DISCOVERY_RETRIES,

	/* keep last */
	__NL80211_MPATH_INFO_AFTER_LAST,
	NL80211_MPATH_INFO_MAX = __NL80211_MPATH_INFO_AFTER_LAST - 1
};

/**
 * enum nl80211_band_attr - band attributes
 * @__NL80211_BAND_ATTR_INVALID: attribute number 0 is reserved
 * @NL80211_BAND_ATTR_FREQS: supported frequencies in this band,
 *	an array of nested frequency attributes
 * @NL80211_BAND_ATTR_RATES: supported bitrates in this band,
 *	an array of nested bitrate attributes
 * @NL80211_BAND_ATTR_HT_MCS_SET: 16-byte attribute containing the MCS set as
 *	defined in 802.11n
 * @NL80211_BAND_ATTR_HT_CAPA: HT capabilities, as in the HT information IE
 * @NL80211_BAND_ATTR_HT_AMPDU_FACTOR: A-MPDU factor, as in 11n
 * @NL80211_BAND_ATTR_HT_AMPDU_DENSITY: A-MPDU density, as in 11n
 */
enum nl80211_band_attr {
	__NL80211_BAND_ATTR_INVALID,
	NL80211_BAND_ATTR_FREQS,
	NL80211_BAND_ATTR_RATES,

	NL80211_BAND_ATTR_HT_MCS_SET,
	NL80211_BAND_ATTR_HT_CAPA,
	NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
	NL80211_BAND_ATTR_HT_AMPDU_DENSITY,

	/* keep last */
	__NL80211_BAND_ATTR_AFTER_LAST,
	NL80211_BAND_ATTR_MAX = __NL80211_BAND_ATTR_AFTER_LAST - 1
};

#define NL80211_BAND_ATTR_HT_CAPA NL80211_BAND_ATTR_HT_CAPA

/**
 * enum nl80211_frequency_attr - frequency attributes
 * @NL80211_FREQUENCY_ATTR_FREQ: Frequency in MHz
 * @NL80211_FREQUENCY_ATTR_DISABLED: Channel is disabled in current
 *	regulatory domain.
 * @NL80211_FREQUENCY_ATTR_PASSIVE_SCAN: Only passive scanning is
 *	permitted on this channel in current regulatory domain.
 * @NL80211_FREQUENCY_ATTR_NO_IBSS: IBSS networks are not permitted
 *	on this channel in current regulatory domain.
 * @NL80211_FREQUENCY_ATTR_RADAR: Radar detection is mandatory
 *	on this channel in current regulatory domain.
 * @NL80211_FREQUENCY_ATTR_MAX_TX_POWER: Maximum transmission power in mBm
 *	(100 * dBm).
 */
enum nl80211_frequency_attr {
	__NL80211_FREQUENCY_ATTR_INVALID,
	NL80211_FREQUENCY_ATTR_FREQ,
	NL80211_FREQUENCY_ATTR_DISABLED,
	NL80211_FREQUENCY_ATTR_PASSIVE_SCAN,
	NL80211_FREQUENCY_ATTR_NO_IBSS,
	NL80211_FREQUENCY_ATTR_RADAR,
	NL80211_FREQUENCY_ATTR_MAX_TX_POWER,

	/* keep last */
	__NL80211_FREQUENCY_ATTR_AFTER_LAST,
	NL80211_FREQUENCY_ATTR_MAX = __NL80211_FREQUENCY_ATTR_AFTER_LAST - 1
};

#define NL80211_FREQUENCY_ATTR_MAX_TX_POWER NL80211_FREQUENCY_ATTR_MAX_TX_POWER

/**
 * enum nl80211_bitrate_attr - bitrate attributes
 * @NL80211_BITRATE_ATTR_RATE: Bitrate in units of 100 kbps
 * @NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE: Short preamble supported
 *	in 2.4 GHz band.
 */
enum nl80211_bitrate_attr {
	__NL80211_BITRATE_ATTR_INVALID,
	NL80211_BITRATE_ATTR_RATE,
	NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE,

	/* keep last */
	__NL80211_BITRATE_ATTR_AFTER_LAST,
	NL80211_BITRATE_ATTR_MAX = __NL80211_BITRATE_ATTR_AFTER_LAST - 1
};

/**
 * enum nl80211_initiator - Indicates the initiator of a reg domain request
 * @NL80211_REGDOM_SET_BY_CORE: Core queried CRDA for a dynamic world
 * 	regulatory domain.
 * @NL80211_REGDOM_SET_BY_USER: User asked the wireless core to set the
 * 	regulatory domain.
 * @NL80211_REGDOM_SET_BY_DRIVER: a wireless drivers has hinted to the
 * 	wireless core it thinks its knows the regulatory domain we should be in.
 * @NL80211_REGDOM_SET_BY_COUNTRY_IE: the wireless core has received an
 * 	802.11 country information element with regulatory information it
 * 	thinks we should consider.
 */
enum nl80211_reg_initiator {
	NL80211_REGDOM_SET_BY_CORE,
	NL80211_REGDOM_SET_BY_USER,
	NL80211_REGDOM_SET_BY_DRIVER,
	NL80211_REGDOM_SET_BY_COUNTRY_IE,
};

/**
 * enum nl80211_reg_type - specifies the type of regulatory domain
 * @NL80211_REGDOM_TYPE_COUNTRY: the regulatory domain set is one that pertains
 *	to a specific country. When this is set you can count on the
 *	ISO / IEC 3166 alpha2 country code being valid.
 * @NL80211_REGDOM_TYPE_WORLD: the regulatory set domain is the world regulatory
 * 	domain.
 * @NL80211_REGDOM_TYPE_CUSTOM_WORLD: the regulatory domain set is a custom
 * 	driver specific world regulatory domain. These do not apply system-wide
 * 	and are only applicable to the individual devices which have requested
 * 	them to be applied.
 * @NL80211_REGDOM_TYPE_INTERSECTION: the regulatory domain set is the product
 *	of an intersection between two regulatory domains -- the previously
 *	set regulatory domain on the system and the last accepted regulatory
 *	domain request to be processed.
 */
enum nl80211_reg_type {
	NL80211_REGDOM_TYPE_COUNTRY,
	NL80211_REGDOM_TYPE_WORLD,
	NL80211_REGDOM_TYPE_CUSTOM_WORLD,
	NL80211_REGDOM_TYPE_INTERSECTION,
};

/**
 * enum nl80211_reg_rule_attr - regulatory rule attributes
 * @NL80211_ATTR_REG_RULE_FLAGS: a set of flags which specify additional
 * 	considerations for a given frequency range. These are the
 * 	&enum nl80211_reg_rule_flags.
 * @NL80211_ATTR_FREQ_RANGE_START: starting frequencry for the regulatory
 * 	rule in KHz. This is not a center of frequency but an actual regulatory
 * 	band edge.
 * @NL80211_ATTR_FREQ_RANGE_END: ending frequency for the regulatory rule
 * 	in KHz. This is not a center a frequency but an actual regulatory
 * 	band edge.
 * @NL80211_ATTR_FREQ_RANGE_MAX_BW: maximum allowed bandwidth for this
 * 	frequency range, in KHz.
 * @NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN: the maximum allowed antenna gain
 * 	for a given frequency range. The value is in mBi (100 * dBi).
 * 	If you don't have one then don't send this.
 * @NL80211_ATTR_POWER_RULE_MAX_EIRP: the maximum allowed EIRP for
 * 	a given frequency range. The value is in mBm (100 * dBm).
 */
enum nl80211_reg_rule_attr {
	__NL80211_REG_RULE_ATTR_INVALID,
	NL80211_ATTR_REG_RULE_FLAGS,

	NL80211_ATTR_FREQ_RANGE_START,
	NL80211_ATTR_FREQ_RANGE_END,
	NL80211_ATTR_FREQ_RANGE_MAX_BW,

	NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
	NL80211_ATTR_POWER_RULE_MAX_EIRP,

	/* keep last */
	__NL80211_REG_RULE_ATTR_AFTER_LAST,
	NL80211_REG_RULE_ATTR_MAX = __NL80211_REG_RULE_ATTR_AFTER_LAST - 1
};

/**
 * enum nl80211_reg_rule_flags - regulatory rule flags
 *
 * @NL80211_RRF_NO_OFDM: OFDM modulation not allowed
 * @NL80211_RRF_NO_CCK: CCK modulation not allowed
 * @NL80211_RRF_NO_INDOOR: indoor operation not allowed
 * @NL80211_RRF_NO_OUTDOOR: outdoor operation not allowed
 * @NL80211_RRF_DFS: DFS support is required to be used
 * @NL80211_RRF_PTP_ONLY: this is only for Point To Point links
 * @NL80211_RRF_PTMP_ONLY: this is only for Point To Multi Point links
 * @NL80211_RRF_PASSIVE_SCAN: passive scan is required
 * @NL80211_RRF_NO_IBSS: no IBSS is allowed
 */
enum nl80211_reg_rule_flags {
	NL80211_RRF_NO_OFDM		= 1<<0,
	NL80211_RRF_NO_CCK		= 1<<1,
	NL80211_RRF_NO_INDOOR		= 1<<2,
	NL80211_RRF_NO_OUTDOOR		= 1<<3,
	NL80211_RRF_DFS			= 1<<4,
	NL80211_RRF_PTP_ONLY		= 1<<5,
	NL80211_RRF_PTMP_ONLY		= 1<<6,
	NL80211_RRF_PASSIVE_SCAN	= 1<<7,
	NL80211_RRF_NO_IBSS		= 1<<8,
};

/**
 * enum nl80211_mntr_flags - monitor configuration flags
 *
 * Monitor configuration flags.
 *
 * @__NL80211_MNTR_FLAG_INVALID: reserved
 *
 * @NL80211_MNTR_FLAG_FCSFAIL: pass frames with bad FCS
 * @NL80211_MNTR_FLAG_PLCPFAIL: pass frames with bad PLCP
 * @NL80211_MNTR_FLAG_CONTROL: pass control frames
 * @NL80211_MNTR_FLAG_OTHER_BSS: disable BSSID filtering
 * @NL80211_MNTR_FLAG_COOK_FRAMES: report frames after processing.
 *	overrides all other flags.
 *
 * @__NL80211_MNTR_FLAG_AFTER_LAST: internal use
 * @NL80211_MNTR_FLAG_MAX: highest possible monitor flag
 */
enum nl80211_mntr_flags {
	__NL80211_MNTR_FLAG_INVALID,
	NL80211_MNTR_FLAG_FCSFAIL,
	NL80211_MNTR_FLAG_PLCPFAIL,
	NL80211_MNTR_FLAG_CONTROL,
	NL80211_MNTR_FLAG_OTHER_BSS,
	NL80211_MNTR_FLAG_COOK_FRAMES,

	/* keep last */
	__NL80211_MNTR_FLAG_AFTER_LAST,
	NL80211_MNTR_FLAG_MAX = __NL80211_MNTR_FLAG_AFTER_LAST - 1
};

/**
 * enum nl80211_meshconf_params - mesh configuration parameters
 *
 * Mesh configuration parameters
 *
 * @__NL80211_MESHCONF_INVALID: internal use
 *
 * @NL80211_MESHCONF_RETRY_TIMEOUT: specifies the initial retry timeout in
 * millisecond units, used by the Peer Link Open message
 *
 * @NL80211_MESHCONF_CONFIRM_TIMEOUT: specifies the inital confirm timeout, in
 * millisecond units, used by the peer link management to close a peer link
 *
 * @NL80211_MESHCONF_HOLDING_TIMEOUT: specifies the holding timeout, in
 * millisecond units
 *
 * @NL80211_MESHCONF_MAX_PEER_LINKS: maximum number of peer links allowed
 * on this mesh interface
 *
 * @NL80211_MESHCONF_MAX_RETRIES: specifies the maximum number of peer link
 * open retries that can be sent to establish a new peer link instance in a
 * mesh
 *
 * @NL80211_MESHCONF_TTL: specifies the value of TTL field set at a source mesh
 * point.
 *
 * @NL80211_MESHCONF_AUTO_OPEN_PLINKS: whether we should automatically
 * open peer links when we detect compatible mesh peers.
 *
 * @NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES: the number of action frames
 * containing a PREQ that an MP can send to a particular destination (path
 * target)
 *
 * @NL80211_MESHCONF_PATH_REFRESH_TIME: how frequently to refresh mesh paths
 * (in milliseconds)
 *
 * @NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT: minimum length of time to wait
 * until giving up on a path discovery (in milliseconds)
 *
 * @NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT: The time (in TUs) for which mesh
 * points receiving a PREQ shall consider the forwarding information from the
 * root to be valid. (TU = time unit)
 *
 * @NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL: The minimum interval of time (in
 * TUs) during which an MP can send only one action frame containing a PREQ
 * reference element
 *
 * @NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME: The interval of time (in TUs)
 * that it takes for an HWMP information element to propagate across the mesh
 *
 * @NL80211_MESHCONF_ATTR_MAX: highest possible mesh configuration attribute
 *
 * @__NL80211_MESHCONF_ATTR_AFTER_LAST: internal use
 */
enum nl80211_meshconf_params {
	__NL80211_MESHCONF_INVALID,
	NL80211_MESHCONF_RETRY_TIMEOUT,
	NL80211_MESHCONF_CONFIRM_TIMEOUT,
	NL80211_MESHCONF_HOLDING_TIMEOUT,
	NL80211_MESHCONF_MAX_PEER_LINKS,
	NL80211_MESHCONF_MAX_RETRIES,
	NL80211_MESHCONF_TTL,
	NL80211_MESHCONF_AUTO_OPEN_PLINKS,
	NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
	NL80211_MESHCONF_PATH_REFRESH_TIME,
	NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
	NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
	NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
	NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,

	/* keep last */
	__NL80211_MESHCONF_ATTR_AFTER_LAST,
	NL80211_MESHCONF_ATTR_MAX = __NL80211_MESHCONF_ATTR_AFTER_LAST - 1
};

/**
 * enum nl80211_txq_attr - TX queue parameter attributes
 * @__NL80211_TXQ_ATTR_INVALID: Attribute number 0 is reserved
 * @NL80211_TXQ_ATTR_QUEUE: TX queue identifier (NL80211_TXQ_Q_*)
 * @NL80211_TXQ_ATTR_TXOP: Maximum burst time in units of 32 usecs, 0 meaning
 *	disabled
 * @NL80211_TXQ_ATTR_CWMIN: Minimum contention window [a value of the form
 *	2^n-1 in the range 1..32767]
 * @NL80211_TXQ_ATTR_CWMAX: Maximum contention window [a value of the form
 *	2^n-1 in the range 1..32767]
 * @NL80211_TXQ_ATTR_AIFS: Arbitration interframe space [0..255]
 * @__NL80211_TXQ_ATTR_AFTER_LAST: Internal
 * @NL80211_TXQ_ATTR_MAX: Maximum TXQ attribute number
 */
enum nl80211_txq_attr {
	__NL80211_TXQ_ATTR_INVALID,
	NL80211_TXQ_ATTR_QUEUE,
	NL80211_TXQ_ATTR_TXOP,
	NL80211_TXQ_ATTR_CWMIN,
	NL80211_TXQ_ATTR_CWMAX,
	NL80211_TXQ_ATTR_AIFS,

	/* keep last */
	__NL80211_TXQ_ATTR_AFTER_LAST,
	NL80211_TXQ_ATTR_MAX = __NL80211_TXQ_ATTR_AFTER_LAST - 1
};

enum nl80211_txq_q {
	NL80211_TXQ_Q_VO,
	NL80211_TXQ_Q_VI,
	NL80211_TXQ_Q_BE,
	NL80211_TXQ_Q_BK
};

enum nl80211_channel_type {
	NL80211_CHAN_NO_HT,
	NL80211_CHAN_HT20,
	NL80211_CHAN_HT40MINUS,
	NL80211_CHAN_HT40PLUS
};

/**
 * enum nl80211_bss - netlink attributes for a BSS
 *
 * @__NL80211_BSS_INVALID: invalid
 * @NL80211_BSS_FREQUENCY: frequency in MHz (u32)
 * @NL80211_BSS_TSF: TSF of the received probe response/beacon (u64)
 * @NL80211_BSS_BEACON_INTERVAL: beacon interval of the (I)BSS (u16)
 * @NL80211_BSS_CAPABILITY: capability field (CPU order, u16)
 * @NL80211_BSS_INFORMATION_ELEMENTS: binary attribute containing the
 *	raw information elements from the probe response/beacon (bin)
 * @NL80211_BSS_SIGNAL_MBM: signal strength of probe response/beacon
 *	in mBm (100 * dBm) (s32)
 * @NL80211_BSS_SIGNAL_UNSPEC: signal strength of the probe response/beacon
 *	in unspecified units, scaled to 0..100 (u8)
 * @NL80211_BSS_STATUS: status, if this BSS is "used"
 * @__NL80211_BSS_AFTER_LAST: internal
 * @NL80211_BSS_MAX: highest BSS attribute
 */
enum nl80211_bss {
	__NL80211_BSS_INVALID,
	NL80211_BSS_BSSID,
	NL80211_BSS_FREQUENCY,
	NL80211_BSS_TSF,
	NL80211_BSS_BEACON_INTERVAL,
	NL80211_BSS_CAPABILITY,
	NL80211_BSS_INFORMATION_ELEMENTS,
	NL80211_BSS_SIGNAL_MBM,
	NL80211_BSS_SIGNAL_UNSPEC,
	NL80211_BSS_STATUS,

	/* keep last */
	__NL80211_BSS_AFTER_LAST,
	NL80211_BSS_MAX = __NL80211_BSS_AFTER_LAST - 1
};

/**
 * enum nl80211_bss_status - BSS "status"
 */
enum nl80211_bss_status {
	NL80211_BSS_STATUS_AUTHENTICATED,
	NL80211_BSS_STATUS_ASSOCIATED,
	NL80211_BSS_STATUS_IBSS_JOINED,
};

/**
 * enum nl80211_auth_type - AuthenticationType
 *
 * @NL80211_AUTHTYPE_OPEN_SYSTEM: Open System authentication
 * @NL80211_AUTHTYPE_SHARED_KEY: Shared Key authentication (WEP only)
 * @NL80211_AUTHTYPE_FT: Fast BSS Transition (IEEE 802.11r)
 * @NL80211_AUTHTYPE_NETWORK_EAP: Network EAP (some Cisco APs and mainly LEAP)
 * @__NL80211_AUTHTYPE_NUM: internal
 * @NL80211_AUTHTYPE_MAX: maximum valid auth algorithm
 * @NL80211_AUTHTYPE_AUTOMATIC: determine automatically (if necessary by
 *	trying multiple times); this is invalid in netlink -- leave out
 *	the attribute for this on CONNECT commands.
 */
enum nl80211_auth_type {
	NL80211_AUTHTYPE_OPEN_SYSTEM,
	NL80211_AUTHTYPE_SHARED_KEY,
	NL80211_AUTHTYPE_FT,
	NL80211_AUTHTYPE_NETWORK_EAP,

	/* keep last */
	__NL80211_AUTHTYPE_NUM,
	NL80211_AUTHTYPE_MAX = __NL80211_AUTHTYPE_NUM - 1,
	NL80211_AUTHTYPE_AUTOMATIC
};

/**
 * enum nl80211_key_type - Key Type
 * @NL80211_KEYTYPE_GROUP: Group (broadcast/multicast) key
 * @NL80211_KEYTYPE_PAIRWISE: Pairwise (unicast/individual) key
 * @NL80211_KEYTYPE_PEERKEY: PeerKey (DLS)
 */
enum nl80211_key_type {
	NL80211_KEYTYPE_GROUP,
	NL80211_KEYTYPE_PAIRWISE,
	NL80211_KEYTYPE_PEERKEY,
};

/**
 * enum nl80211_mfp - Management frame protection state
 * @NL80211_MFP_NO: Management frame protection not used
 * @NL80211_MFP_REQUIRED: Management frame protection required
 */
enum nl80211_mfp {
	NL80211_MFP_NO,
	NL80211_MFP_REQUIRED,
};

enum nl80211_wpa_versions {
	NL80211_WPA_VERSION_1 = 1 << 0,
	NL80211_WPA_VERSION_2 = 1 << 1,
};

/**
 * enum nl80211_key_attributes - key attributes
 * @__NL80211_KEY_INVALID: invalid
 * @NL80211_KEY_DATA: (temporal) key data; for TKIP this consists of
 *	16 bytes encryption key followed by 8 bytes each for TX and RX MIC
 *	keys
 * @NL80211_KEY_IDX: key ID (u8, 0-3)
 * @NL80211_KEY_CIPHER: key cipher suite (u32, as defined by IEEE 802.11
 *	section 7.3.2.25.1, e.g. 0x000FAC04)
 * @NL80211_KEY_SEQ: transmit key sequence number (IV/PN) for TKIP and
 *	CCMP keys, each six bytes in little endian
 * @NL80211_KEY_DEFAULT: flag indicating default key
 * @NL80211_KEY_DEFAULT_MGMT: flag indicating default management key
 * @__NL80211_KEY_AFTER_LAST: internal
 * @NL80211_KEY_MAX: highest key attribute
 */
enum nl80211_key_attributes {
	__NL80211_KEY_INVALID,
	NL80211_KEY_DATA,
	NL80211_KEY_IDX,
	NL80211_KEY_CIPHER,
	NL80211_KEY_SEQ,
	NL80211_KEY_DEFAULT,
	NL80211_KEY_DEFAULT_MGMT,

	/* keep last */
	__NL80211_KEY_AFTER_LAST,
	NL80211_KEY_MAX = __NL80211_KEY_AFTER_LAST - 1
};

#endif /* __LINUX_NL80211_H */