[deliverable/linux.git] / include / linux / ieee80211.h

/*
 * IEEE 802.11 defines
 *
 * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
 * <jkmaline@cc.hut.fi>
 * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
 * Copyright (c) 2005, Devicescape Software, Inc.
 * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#ifndef IEEE80211_H
#define IEEE80211_H

#include <linux/types.h>
#include <asm/byteorder.h>

#define FCS_LEN 4

#define IEEE80211_FCTL_VERS		0x0003
#define IEEE80211_FCTL_FTYPE		0x000c
#define IEEE80211_FCTL_STYPE		0x00f0
#define IEEE80211_FCTL_TODS		0x0100
#define IEEE80211_FCTL_FROMDS		0x0200
#define IEEE80211_FCTL_MOREFRAGS	0x0400
#define IEEE80211_FCTL_RETRY		0x0800
#define IEEE80211_FCTL_PM		0x1000
#define IEEE80211_FCTL_MOREDATA		0x2000
#define IEEE80211_FCTL_PROTECTED	0x4000
#define IEEE80211_FCTL_ORDER		0x8000

#define IEEE80211_SCTL_FRAG		0x000F
#define IEEE80211_SCTL_SEQ		0xFFF0

#define IEEE80211_FTYPE_MGMT		0x0000
#define IEEE80211_FTYPE_CTL		0x0004
#define IEEE80211_FTYPE_DATA		0x0008

/* management */
#define IEEE80211_STYPE_ASSOC_REQ	0x0000
#define IEEE80211_STYPE_ASSOC_RESP	0x0010
#define IEEE80211_STYPE_REASSOC_REQ	0x0020
#define IEEE80211_STYPE_REASSOC_RESP	0x0030
#define IEEE80211_STYPE_PROBE_REQ	0x0040
#define IEEE80211_STYPE_PROBE_RESP	0x0050
#define IEEE80211_STYPE_BEACON		0x0080
#define IEEE80211_STYPE_ATIM		0x0090
#define IEEE80211_STYPE_DISASSOC	0x00A0
#define IEEE80211_STYPE_AUTH		0x00B0
#define IEEE80211_STYPE_DEAUTH		0x00C0
#define IEEE80211_STYPE_ACTION		0x00D0

/* control */
#define IEEE80211_STYPE_BACK_REQ	0x0080
#define IEEE80211_STYPE_BACK		0x0090
#define IEEE80211_STYPE_PSPOLL		0x00A0
#define IEEE80211_STYPE_RTS		0x00B0
#define IEEE80211_STYPE_CTS		0x00C0
#define IEEE80211_STYPE_ACK		0x00D0
#define IEEE80211_STYPE_CFEND		0x00E0
#define IEEE80211_STYPE_CFENDACK	0x00F0

/* data */
#define IEEE80211_STYPE_DATA			0x0000
#define IEEE80211_STYPE_DATA_CFACK		0x0010
#define IEEE80211_STYPE_DATA_CFPOLL		0x0020
#define IEEE80211_STYPE_DATA_CFACKPOLL		0x0030
#define IEEE80211_STYPE_NULLFUNC		0x0040
#define IEEE80211_STYPE_CFACK			0x0050
#define IEEE80211_STYPE_CFPOLL			0x0060
#define IEEE80211_STYPE_CFACKPOLL		0x0070
#define IEEE80211_STYPE_QOS_DATA		0x0080
#define IEEE80211_STYPE_QOS_DATA_CFACK		0x0090
#define IEEE80211_STYPE_QOS_DATA_CFPOLL		0x00A0
#define IEEE80211_STYPE_QOS_DATA_CFACKPOLL	0x00B0
#define IEEE80211_STYPE_QOS_NULLFUNC		0x00C0
#define IEEE80211_STYPE_QOS_CFACK		0x00D0
#define IEEE80211_STYPE_QOS_CFPOLL		0x00E0
#define IEEE80211_STYPE_QOS_CFACKPOLL		0x00F0


/* miscellaneous IEEE 802.11 constants */
#define IEEE80211_MAX_FRAG_THRESHOLD	2352
#define IEEE80211_MAX_RTS_THRESHOLD	2353
#define IEEE80211_MAX_AID		2007
#define IEEE80211_MAX_TIM_LEN		251
/* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
   6.2.1.1.2.

   802.11e clarifies the figure in section 7.1.2. The frame body is
   up to 2304 octets long (maximum MSDU size) plus any crypt overhead. */
#define IEEE80211_MAX_DATA_LEN		2304
/* 30 byte 4 addr hdr, 2 byte QoS, 2304 byte MSDU, 12 byte crypt, 4 byte FCS */
#define IEEE80211_MAX_FRAME_LEN		2352

#define IEEE80211_MAX_SSID_LEN		32
#define IEEE80211_MAX_MESH_ID_LEN	32

struct ieee80211_hdr {
	__le16 frame_control;
	__le16 duration_id;
	u8 addr1[6];
	u8 addr2[6];
	u8 addr3[6];
	__le16 seq_ctrl;
	u8 addr4[6];
} __attribute__ ((packed));


struct ieee80211s_hdr {
	u8 flags;
	u8 ttl;
	__le32 seqnum;
	u8 eaddr1[6];
	u8 eaddr2[6];
	u8 eaddr3[6];
} __attribute__ ((packed));


struct ieee80211_mgmt {
	__le16 frame_control;
	__le16 duration;
	u8 da[6];
	u8 sa[6];
	u8 bssid[6];
	__le16 seq_ctrl;
	union {
		struct {
			__le16 auth_alg;
			__le16 auth_transaction;
			__le16 status_code;
			/* possibly followed by Challenge text */
			u8 variable[0];
		} __attribute__ ((packed)) auth;
		struct {
			__le16 reason_code;
		} __attribute__ ((packed)) deauth;
		struct {
			__le16 capab_info;
			__le16 listen_interval;
			/* followed by SSID and Supported rates */
			u8 variable[0];
		} __attribute__ ((packed)) assoc_req;
		struct {
			__le16 capab_info;
			__le16 status_code;
			__le16 aid;
			/* followed by Supported rates */
			u8 variable[0];
		} __attribute__ ((packed)) assoc_resp, reassoc_resp;
		struct {
			__le16 capab_info;
			__le16 listen_interval;
			u8 current_ap[6];
			/* followed by SSID and Supported rates */
			u8 variable[0];
		} __attribute__ ((packed)) reassoc_req;
		struct {
			__le16 reason_code;
		} __attribute__ ((packed)) disassoc;
		struct {
			__le64 timestamp;
			__le16 beacon_int;
			__le16 capab_info;
			/* followed by some of SSID, Supported rates,
			 * FH Params, DS Params, CF Params, IBSS Params, TIM */
			u8 variable[0];
		} __attribute__ ((packed)) beacon;
		struct {
			/* only variable items: SSID, Supported rates */
			u8 variable[0];
		} __attribute__ ((packed)) probe_req;
		struct {
			__le64 timestamp;
			__le16 beacon_int;
			__le16 capab_info;
			/* followed by some of SSID, Supported rates,
			 * FH Params, DS Params, CF Params, IBSS Params */
			u8 variable[0];
		} __attribute__ ((packed)) probe_resp;
		struct {
			u8 category;
			union {
				struct {
					u8 action_code;
					u8 dialog_token;
					u8 status_code;
					u8 variable[0];
				} __attribute__ ((packed)) wme_action;
				struct{
					u8 action_code;
					u8 element_id;
					u8 length;
					u8 switch_mode;
					u8 new_chan;
					u8 switch_count;
				} __attribute__((packed)) chan_switch;
				struct{
					u8 action_code;
					u8 dialog_token;
					__le16 capab;
					__le16 timeout;
					__le16 start_seq_num;
				} __attribute__((packed)) addba_req;
				struct{
					u8 action_code;
					u8 dialog_token;
					__le16 status;
					__le16 capab;
					__le16 timeout;
				} __attribute__((packed)) addba_resp;
				struct{
					u8 action_code;
					__le16 params;
					__le16 reason_code;
				} __attribute__((packed)) delba;
				struct{
					u8 action_code;
					/* capab_info for open and confirm,
					 * reason for close
					 */
					__le16 aux;
					/* Followed in plink_confirm by status
					 * code, AID and supported rates,
					 * and directly by supported rates in
					 * plink_open and plink_close
					 */
					u8 variable[0];
				} __attribute__((packed)) plink_action;
				struct{
					u8 action_code;
					u8 variable[0];
				} __attribute__((packed)) mesh_action;
			} u;
		} __attribute__ ((packed)) action;
	} u;
} __attribute__ ((packed));


/* Control frames */
struct ieee80211_rts {
	__le16 frame_control;
	__le16 duration;
	u8 ra[6];
	u8 ta[6];
} __attribute__ ((packed));

struct ieee80211_cts {
	__le16 frame_control;
	__le16 duration;
	u8 ra[6];
} __attribute__ ((packed));

/**
 * struct ieee80211_bar - HT Block Ack Request
 *
 * This structure refers to "HT BlockAckReq" as
 * described in 802.11n draft section 7.2.1.7.1
 */
struct ieee80211_bar {
	__le16 frame_control;
	__le16 duration;
	__u8 ra[6];
	__u8 ta[6];
	__le16 control;
	__le16 start_seq_num;
} __attribute__((packed));

/**
 * struct ieee80211_ht_cap - HT capabilities
 *
 * This structure refers to "HT capabilities element" as
 * described in 802.11n draft section 7.3.2.52
 */
struct ieee80211_ht_cap {
	__le16 cap_info;
	u8 ampdu_params_info;
	u8 supp_mcs_set[16];
	__le16 extended_ht_cap_info;
	__le32 tx_BF_cap_info;
	u8 antenna_selection_info;
} __attribute__ ((packed));

/**
 * struct ieee80211_ht_cap - HT additional information
 *
 * This structure refers to "HT information element" as
 * described in 802.11n draft section 7.3.2.53
 */
struct ieee80211_ht_addt_info {
	u8 control_chan;
	u8 ht_param;
	__le16 operation_mode;
	__le16 stbc_param;
	u8 basic_set[16];
} __attribute__ ((packed));

/* 802.11n HT capabilities masks */
#define IEEE80211_HT_CAP_SUP_WIDTH		0x0002
#define IEEE80211_HT_CAP_MIMO_PS		0x000C
#define IEEE80211_HT_CAP_GRN_FLD		0x0010
#define IEEE80211_HT_CAP_SGI_20			0x0020
#define IEEE80211_HT_CAP_SGI_40			0x0040
#define IEEE80211_HT_CAP_DELAY_BA		0x0400
#define IEEE80211_HT_CAP_MAX_AMSDU		0x0800
/* 802.11n HT capability AMPDU settings */
#define IEEE80211_HT_CAP_AMPDU_FACTOR		0x03
#define IEEE80211_HT_CAP_AMPDU_DENSITY		0x1C
/* 802.11n HT capability MSC set */
#define IEEE80211_SUPP_MCS_SET_UEQM		4
#define IEEE80211_HT_CAP_MAX_STREAMS		4
#define IEEE80211_SUPP_MCS_SET_LEN		10
/* maximum streams the spec allows */
#define IEEE80211_HT_CAP_MCS_TX_DEFINED		0x01
#define IEEE80211_HT_CAP_MCS_TX_RX_DIFF		0x02
#define IEEE80211_HT_CAP_MCS_TX_STREAMS		0x0C
#define IEEE80211_HT_CAP_MCS_TX_UEQM		0x10
/* 802.11n HT IE masks */
#define IEEE80211_HT_IE_CHA_SEC_OFFSET		0x03
#define IEEE80211_HT_IE_CHA_SEC_ABOVE 		0x01
#define IEEE80211_HT_IE_CHA_SEC_BELOW 		0x03
#define IEEE80211_HT_IE_CHA_WIDTH		0x04
#define IEEE80211_HT_IE_HT_PROTECTION		0x0003
#define IEEE80211_HT_IE_NON_GF_STA_PRSNT	0x0004
#define IEEE80211_HT_IE_NON_HT_STA_PRSNT	0x0010

/* MIMO Power Save Modes */
#define WLAN_HT_CAP_MIMO_PS_STATIC	0
#define WLAN_HT_CAP_MIMO_PS_DYNAMIC	1
#define WLAN_HT_CAP_MIMO_PS_INVALID	2
#define WLAN_HT_CAP_MIMO_PS_DISABLED	3

/* Authentication algorithms */
#define WLAN_AUTH_OPEN 0
#define WLAN_AUTH_SHARED_KEY 1
#define WLAN_AUTH_FAST_BSS_TRANSITION 2
#define WLAN_AUTH_LEAP 128

#define WLAN_AUTH_CHALLENGE_LEN 128

#define WLAN_CAPABILITY_ESS		(1<<0)
#define WLAN_CAPABILITY_IBSS		(1<<1)
#define WLAN_CAPABILITY_CF_POLLABLE	(1<<2)
#define WLAN_CAPABILITY_CF_POLL_REQUEST	(1<<3)
#define WLAN_CAPABILITY_PRIVACY		(1<<4)
#define WLAN_CAPABILITY_SHORT_PREAMBLE	(1<<5)
#define WLAN_CAPABILITY_PBCC		(1<<6)
#define WLAN_CAPABILITY_CHANNEL_AGILITY	(1<<7)
/* 802.11h */
#define WLAN_CAPABILITY_SPECTRUM_MGMT	(1<<8)
#define WLAN_CAPABILITY_QOS		(1<<9)
#define WLAN_CAPABILITY_SHORT_SLOT_TIME	(1<<10)
#define WLAN_CAPABILITY_DSSS_OFDM	(1<<13)

/* 802.11g ERP information element */
#define WLAN_ERP_NON_ERP_PRESENT (1<<0)
#define WLAN_ERP_USE_PROTECTION (1<<1)
#define WLAN_ERP_BARKER_PREAMBLE (1<<2)

/* WLAN_ERP_BARKER_PREAMBLE values */
enum {
	WLAN_ERP_PREAMBLE_SHORT = 0,
	WLAN_ERP_PREAMBLE_LONG = 1,
};

/* Status codes */
enum ieee80211_statuscode {
	WLAN_STATUS_SUCCESS = 0,
	WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
	WLAN_STATUS_CAPS_UNSUPPORTED = 10,
	WLAN_STATUS_REASSOC_NO_ASSOC = 11,
	WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
	WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
	WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
	WLAN_STATUS_CHALLENGE_FAIL = 15,
	WLAN_STATUS_AUTH_TIMEOUT = 16,
	WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
	WLAN_STATUS_ASSOC_DENIED_RATES = 18,
	/* 802.11b */
	WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
	WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
	WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
	/* 802.11h */
	WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
	WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
	WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
	/* 802.11g */
	WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
	WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
	/* 802.11i */
	WLAN_STATUS_INVALID_IE = 40,
	WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
	WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
	WLAN_STATUS_INVALID_AKMP = 43,
	WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
	WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
	WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
	/* 802.11e */
	WLAN_STATUS_UNSPECIFIED_QOS = 32,
	WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33,
	WLAN_STATUS_ASSOC_DENIED_LOWACK = 34,
	WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35,
	WLAN_STATUS_REQUEST_DECLINED = 37,
	WLAN_STATUS_INVALID_QOS_PARAM = 38,
	WLAN_STATUS_CHANGE_TSPEC = 39,
	WLAN_STATUS_WAIT_TS_DELAY = 47,
	WLAN_STATUS_NO_DIRECT_LINK = 48,
	WLAN_STATUS_STA_NOT_PRESENT = 49,
	WLAN_STATUS_STA_NOT_QSTA = 50,
};


/* Reason codes */
enum ieee80211_reasoncode {
	WLAN_REASON_UNSPECIFIED = 1,
	WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
	WLAN_REASON_DEAUTH_LEAVING = 3,
	WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
	WLAN_REASON_DISASSOC_AP_BUSY = 5,
	WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
	WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
	WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
	WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
	/* 802.11h */
	WLAN_REASON_DISASSOC_BAD_POWER = 10,
	WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
	/* 802.11i */
	WLAN_REASON_INVALID_IE = 13,
	WLAN_REASON_MIC_FAILURE = 14,
	WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
	WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
	WLAN_REASON_IE_DIFFERENT = 17,
	WLAN_REASON_INVALID_GROUP_CIPHER = 18,
	WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
	WLAN_REASON_INVALID_AKMP = 20,
	WLAN_REASON_UNSUPP_RSN_VERSION = 21,
	WLAN_REASON_INVALID_RSN_IE_CAP = 22,
	WLAN_REASON_IEEE8021X_FAILED = 23,
	WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
	/* 802.11e */
	WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32,
	WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33,
	WLAN_REASON_DISASSOC_LOW_ACK = 34,
	WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35,
	WLAN_REASON_QSTA_LEAVE_QBSS = 36,
	WLAN_REASON_QSTA_NOT_USE = 37,
	WLAN_REASON_QSTA_REQUIRE_SETUP = 38,
	WLAN_REASON_QSTA_TIMEOUT = 39,
	WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45,
};


/* Information Element IDs */
enum ieee80211_eid {
	WLAN_EID_SSID = 0,
	WLAN_EID_SUPP_RATES = 1,
	WLAN_EID_FH_PARAMS = 2,
	WLAN_EID_DS_PARAMS = 3,
	WLAN_EID_CF_PARAMS = 4,
	WLAN_EID_TIM = 5,
	WLAN_EID_IBSS_PARAMS = 6,
	WLAN_EID_CHALLENGE = 16,
	/* 802.11d */
	WLAN_EID_COUNTRY = 7,
	WLAN_EID_HP_PARAMS = 8,
	WLAN_EID_HP_TABLE = 9,
	WLAN_EID_REQUEST = 10,
	/* 802.11e */
	WLAN_EID_QBSS_LOAD = 11,
	WLAN_EID_EDCA_PARAM_SET = 12,
	WLAN_EID_TSPEC = 13,
	WLAN_EID_TCLAS = 14,
	WLAN_EID_SCHEDULE = 15,
	WLAN_EID_TS_DELAY = 43,
	WLAN_EID_TCLAS_PROCESSING = 44,
	WLAN_EID_QOS_CAPA = 46,
	/* 802.11s
	 *
	 * All mesh EID numbers are pending IEEE 802.11 ANA approval.
	 * The numbers have been incremented from those suggested in
	 * 802.11s/D2.0 so that MESH_CONFIG does not conflict with
	 * EXT_SUPP_RATES.
	 */
	WLAN_EID_MESH_CONFIG = 51,
	WLAN_EID_MESH_ID = 52,
	WLAN_EID_PEER_LINK = 55,
	WLAN_EID_PREQ = 68,
	WLAN_EID_PREP = 69,
	WLAN_EID_PERR = 70,
	/* 802.11h */
	WLAN_EID_PWR_CONSTRAINT = 32,
	WLAN_EID_PWR_CAPABILITY = 33,
	WLAN_EID_TPC_REQUEST = 34,
	WLAN_EID_TPC_REPORT = 35,
	WLAN_EID_SUPPORTED_CHANNELS = 36,
	WLAN_EID_CHANNEL_SWITCH = 37,
	WLAN_EID_MEASURE_REQUEST = 38,
	WLAN_EID_MEASURE_REPORT = 39,
	WLAN_EID_QUIET = 40,
	WLAN_EID_IBSS_DFS = 41,
	/* 802.11g */
	WLAN_EID_ERP_INFO = 42,
	WLAN_EID_EXT_SUPP_RATES = 50,
	/* 802.11n */
	WLAN_EID_HT_CAPABILITY = 45,
	WLAN_EID_HT_EXTRA_INFO = 61,
	/* 802.11i */
	WLAN_EID_RSN = 48,
	WLAN_EID_WPA = 221,
	WLAN_EID_GENERIC = 221,
	WLAN_EID_VENDOR_SPECIFIC = 221,
	WLAN_EID_QOS_PARAMETER = 222
};

/* Action category code */
enum ieee80211_category {
	WLAN_CATEGORY_SPECTRUM_MGMT = 0,
	WLAN_CATEGORY_QOS = 1,
	WLAN_CATEGORY_DLS = 2,
	WLAN_CATEGORY_BACK = 3,
	WLAN_CATEGORY_WMM = 17,
};

/* BACK action code */
enum ieee80211_back_actioncode {
	WLAN_ACTION_ADDBA_REQ = 0,
	WLAN_ACTION_ADDBA_RESP = 1,
	WLAN_ACTION_DELBA = 2,
};

/* BACK (block-ack) parties */
enum ieee80211_back_parties {
	WLAN_BACK_RECIPIENT = 0,
	WLAN_BACK_INITIATOR = 1,
	WLAN_BACK_TIMER = 2,
};

/* A-MSDU 802.11n */
#define IEEE80211_QOS_CONTROL_A_MSDU_PRESENT 0x0080

/* cipher suite selectors */
#define WLAN_CIPHER_SUITE_USE_GROUP	0x000FAC00
#define WLAN_CIPHER_SUITE_WEP40		0x000FAC01
#define WLAN_CIPHER_SUITE_TKIP		0x000FAC02
/* reserved: 				0x000FAC03 */
#define WLAN_CIPHER_SUITE_CCMP		0x000FAC04
#define WLAN_CIPHER_SUITE_WEP104	0x000FAC05

#define WLAN_MAX_KEY_LEN		32

/**
 * ieee80211_get_SA - get pointer to SA
 *
 * Given an 802.11 frame, this function returns the offset
 * to the source address (SA). It does not verify that the
 * header is long enough to contain the address, and the
 * header must be long enough to contain the frame control
 * field.
 *
 * @hdr: the frame
 */
static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr)
{
	__le16 fc = hdr->frame_control;
	fc &= cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS);

	switch (fc) {
	case __constant_cpu_to_le16(IEEE80211_FCTL_FROMDS):
		return hdr->addr3;
	case __constant_cpu_to_le16(IEEE80211_FCTL_TODS|IEEE80211_FCTL_FROMDS):
		return hdr->addr4;
	default:
		return hdr->addr2;
	}
}

/**
 * ieee80211_get_DA - get pointer to DA
 *
 * Given an 802.11 frame, this function returns the offset
 * to the destination address (DA). It does not verify that
 * the header is long enough to contain the address, and the
 * header must be long enough to contain the frame control
 * field.
 *
 * @hdr: the frame
 */
static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr)
{
	__le16 fc = hdr->frame_control;
	fc &= cpu_to_le16(IEEE80211_FCTL_TODS);

	if (fc)
		return hdr->addr3;
	else
		return hdr->addr1;
}

/**
 * ieee80211_get_morefrag - determine whether the MOREFRAGS bit is set
 *
 * This function determines whether the "more fragments" bit is set
 * in the frame.
 *
 * @hdr: the frame
 */
static inline int ieee80211_get_morefrag(struct ieee80211_hdr *hdr)
{
	__le16 fc = hdr->frame_control;
	return !!(fc & cpu_to_le16(IEEE80211_FCTL_MOREFRAGS));
}

#endif /* IEEE80211_H */
Commit	Line	Data
a9de8ce0 JB	1	/*
	2	* IEEE 802.11 defines
	3	*
	4	* Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
	5	* <jkmaline@cc.hut.fi>
	6	* Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
	7	* Copyright (c) 2005, Devicescape Software, Inc.
	8	* Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
	9	*
	10	* This program is free software; you can redistribute it and/or modify
	11	* it under the terms of the GNU General Public License version 2 as
	12	* published by the Free Software Foundation.
	13	*/
	14
	15	#ifndef IEEE80211_H
	16	#define IEEE80211_H
	17
	18	#include <linux/types.h>
f97df02e	19	#include <asm/byteorder.h>
a9de8ce0 JB	20
	21	#define FCS_LEN 4
	22
	23	#define IEEE80211_FCTL_VERS 0x0003
	24	#define IEEE80211_FCTL_FTYPE 0x000c
	25	#define IEEE80211_FCTL_STYPE 0x00f0
	26	#define IEEE80211_FCTL_TODS 0x0100
	27	#define IEEE80211_FCTL_FROMDS 0x0200
	28	#define IEEE80211_FCTL_MOREFRAGS 0x0400
	29	#define IEEE80211_FCTL_RETRY 0x0800
	30	#define IEEE80211_FCTL_PM 0x1000
	31	#define IEEE80211_FCTL_MOREDATA 0x2000
	32	#define IEEE80211_FCTL_PROTECTED 0x4000
	33	#define IEEE80211_FCTL_ORDER 0x8000
	34
	35	#define IEEE80211_SCTL_FRAG 0x000F
	36	#define IEEE80211_SCTL_SEQ 0xFFF0
	37
	38	#define IEEE80211_FTYPE_MGMT 0x0000
	39	#define IEEE80211_FTYPE_CTL 0x0004
	40	#define IEEE80211_FTYPE_DATA 0x0008
	41
	42	/* management */
	43	#define IEEE80211_STYPE_ASSOC_REQ 0x0000
	44	#define IEEE80211_STYPE_ASSOC_RESP 0x0010
	45	#define IEEE80211_STYPE_REASSOC_REQ 0x0020
	46	#define IEEE80211_STYPE_REASSOC_RESP 0x0030
	47	#define IEEE80211_STYPE_PROBE_REQ 0x0040
	48	#define IEEE80211_STYPE_PROBE_RESP 0x0050
	49	#define IEEE80211_STYPE_BEACON 0x0080
	50	#define IEEE80211_STYPE_ATIM 0x0090
	51	#define IEEE80211_STYPE_DISASSOC 0x00A0
	52	#define IEEE80211_STYPE_AUTH 0x00B0
	53	#define IEEE80211_STYPE_DEAUTH 0x00C0
	54	#define IEEE80211_STYPE_ACTION 0x00D0
	55
	56	/* control */
6b4e3241 RR	57	#define IEEE80211_STYPE_BACK_REQ 0x0080
6b4e3241 RR	58	#define IEEE80211_STYPE_BACK 0x0090
a9de8ce0 JB	59	#define IEEE80211_STYPE_PSPOLL 0x00A0
	60	#define IEEE80211_STYPE_RTS 0x00B0
	61	#define IEEE80211_STYPE_CTS 0x00C0
	62	#define IEEE80211_STYPE_ACK 0x00D0
	63	#define IEEE80211_STYPE_CFEND 0x00E0
	64	#define IEEE80211_STYPE_CFENDACK 0x00F0
	65
	66	/* data */
	67	#define IEEE80211_STYPE_DATA 0x0000
	68	#define IEEE80211_STYPE_DATA_CFACK 0x0010
	69	#define IEEE80211_STYPE_DATA_CFPOLL 0x0020
	70	#define IEEE80211_STYPE_DATA_CFACKPOLL 0x0030
	71	#define IEEE80211_STYPE_NULLFUNC 0x0040
	72	#define IEEE80211_STYPE_CFACK 0x0050
	73	#define IEEE80211_STYPE_CFPOLL 0x0060
	74	#define IEEE80211_STYPE_CFACKPOLL 0x0070
	75	#define IEEE80211_STYPE_QOS_DATA 0x0080
	76	#define IEEE80211_STYPE_QOS_DATA_CFACK 0x0090
	77	#define IEEE80211_STYPE_QOS_DATA_CFPOLL 0x00A0
	78	#define IEEE80211_STYPE_QOS_DATA_CFACKPOLL 0x00B0
	79	#define IEEE80211_STYPE_QOS_NULLFUNC 0x00C0
	80	#define IEEE80211_STYPE_QOS_CFACK 0x00D0
	81	#define IEEE80211_STYPE_QOS_CFPOLL 0x00E0
	82	#define IEEE80211_STYPE_QOS_CFACKPOLL 0x00F0
	83
	84
	85	/* miscellaneous IEEE 802.11 constants */
c237899d MW	86	#define IEEE80211_MAX_FRAG_THRESHOLD 2352
c237899d MW	87	#define IEEE80211_MAX_RTS_THRESHOLD 2353
a9de8ce0 JB	88	#define IEEE80211_MAX_AID 2007
a9de8ce0 JB	89	#define IEEE80211_MAX_TIM_LEN 251
a9de8ce0 JB	90	/* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
	91	6.2.1.1.2.
	92
c237899d MW	93	802.11e clarifies the figure in section 7.1.2. The frame body is
	94	up to 2304 octets long (maximum MSDU size) plus any crypt overhead. */
	95	#define IEEE80211_MAX_DATA_LEN 2304
	96	/* 30 byte 4 addr hdr, 2 byte QoS, 2304 byte MSDU, 12 byte crypt, 4 byte FCS */
	97	#define IEEE80211_MAX_FRAME_LEN 2352
a9de8ce0 JB	98
a9de8ce0 JB	99	#define IEEE80211_MAX_SSID_LEN 32
37c57989	100	#define IEEE80211_MAX_MESH_ID_LEN 32
a9de8ce0 JB	101
	102	struct ieee80211_hdr {
	103	__le16 frame_control;
	104	__le16 duration_id;
	105	u8 addr1[6];
	106	u8 addr2[6];
	107	u8 addr3[6];
	108	__le16 seq_ctrl;
	109	u8 addr4[6];
	110	} __attribute__ ((packed));
	111
	112
37c57989 LCC	113	struct ieee80211s_hdr {
	114	u8 flags;
	115	u8 ttl;
51ceddad	116	__le32 seqnum;
37c57989 LCC	117	u8 eaddr1[6];
	118	u8 eaddr2[6];
	119	u8 eaddr3[6];
	120	} __attribute__ ((packed));
	121
	122
a9de8ce0 JB	123	struct ieee80211_mgmt {
	124	__le16 frame_control;
	125	__le16 duration;
	126	u8 da[6];
	127	u8 sa[6];
	128	u8 bssid[6];
	129	__le16 seq_ctrl;
	130	union {
	131	struct {
	132	__le16 auth_alg;
	133	__le16 auth_transaction;
	134	__le16 status_code;
	135	/* possibly followed by Challenge text */
	136	u8 variable[0];
	137	} __attribute__ ((packed)) auth;
	138	struct {
	139	__le16 reason_code;
	140	} __attribute__ ((packed)) deauth;
	141	struct {
	142	__le16 capab_info;
	143	__le16 listen_interval;
	144	/* followed by SSID and Supported rates */
	145	u8 variable[0];
	146	} __attribute__ ((packed)) assoc_req;
	147	struct {
	148	__le16 capab_info;
	149	__le16 status_code;
	150	__le16 aid;
	151	/* followed by Supported rates */
	152	u8 variable[0];
	153	} __attribute__ ((packed)) assoc_resp, reassoc_resp;
	154	struct {
	155	__le16 capab_info;
	156	__le16 listen_interval;
	157	u8 current_ap[6];
	158	/* followed by SSID and Supported rates */
	159	u8 variable[0];
	160	} __attribute__ ((packed)) reassoc_req;
	161	struct {
	162	__le16 reason_code;
	163	} __attribute__ ((packed)) disassoc;
	164	struct {
	165	__le64 timestamp;
	166	__le16 beacon_int;
	167	__le16 capab_info;
	168	/* followed by some of SSID, Supported rates,
	169	* FH Params, DS Params, CF Params, IBSS Params, TIM */
	170	u8 variable[0];
	171	} __attribute__ ((packed)) beacon;
	172	struct {
	173	/* only variable items: SSID, Supported rates */
	174	u8 variable[0];
	175	} __attribute__ ((packed)) probe_req;
	176	struct {
	177	__le64 timestamp;
	178	__le16 beacon_int;
	179	__le16 capab_info;
	180	/* followed by some of SSID, Supported rates,
	181	* FH Params, DS Params, CF Params, IBSS Params */
	182	u8 variable[0];
	183	} __attribute__ ((packed)) probe_resp;
	184	struct {
	185	u8 category;
	186	union {
187	struct {
188	u8 action_code;
189	u8 dialog_token;
190	u8 status_code;
191	u8 variable[0];
192	} __attribute__ ((packed)) wme_action;
193	struct{
194	u8 action_code;
195	u8 element_id;
196	u8 length;
197	u8 switch_mode;
198	u8 new_chan;
199	u8 switch_count;
200	} __attribute__((packed)) chan_switch;
6b4e3241 RR	201	struct{
	202	u8 action_code;
	203	u8 dialog_token;
	204	__le16 capab;
	205	__le16 timeout;
	206	__le16 start_seq_num;
	207	} __attribute__((packed)) addba_req;
	208	struct{
	209	u8 action_code;
	210	u8 dialog_token;
	211	__le16 status;
	212	__le16 capab;
	213	__le16 timeout;
	214	} __attribute__((packed)) addba_resp;
	215	struct{
	216	u8 action_code;
	217	__le16 params;
	218	__le16 reason_code;
	219	} __attribute__((packed)) delba;
37c57989 LCC	220	struct{
	221	u8 action_code;
	222	/* capab_info for open and confirm,
	223	* reason for close
	224	*/
	225	__le16 aux;
	226	/* Followed in plink_confirm by status
	227	* code, AID and supported rates,
	228	* and directly by supported rates in
	229	* plink_open and plink_close
	230	*/
	231	u8 variable[0];
	232	} __attribute__((packed)) plink_action;
	233	struct{
	234	u8 action_code;
	235	u8 variable[0];
	236	} __attribute__((packed)) mesh_action;
a9de8ce0 JB	237	} u;
	238	} __attribute__ ((packed)) action;
	239	} u;
	240	} __attribute__ ((packed));
	241
	242
	243	/* Control frames */
	244	struct ieee80211_rts {
	245	__le16 frame_control;
	246	__le16 duration;
	247	u8 ra[6];
	248	u8 ta[6];
	249	} __attribute__ ((packed));
	250
	251	struct ieee80211_cts {
	252	__le16 frame_control;
	253	__le16 duration;
	254	u8 ra[6];
	255	} __attribute__ ((packed));
	256
6b4e3241 RR	257	/**
	258	* struct ieee80211_bar - HT Block Ack Request
	259	*
	260	* This structure refers to "HT BlockAckReq" as
	261	* described in 802.11n draft section 7.2.1.7.1
	262	*/
	263	struct ieee80211_bar {
	264	__le16 frame_control;
	265	__le16 duration;
	266	__u8 ra[6];
	267	__u8 ta[6];
a8b47ea3 RR	268	__le16 control;
a8b47ea3 RR	269	__le16 start_seq_num;
6b4e3241 RR	270	} __attribute__((packed));
	271
	272	/**
	273	* struct ieee80211_ht_cap - HT capabilities
	274	*
	275	* This structure refers to "HT capabilities element" as
	276	* described in 802.11n draft section 7.3.2.52
	277	*/
	278	struct ieee80211_ht_cap {
	279	__le16 cap_info;
	280	u8 ampdu_params_info;
	281	u8 supp_mcs_set[16];
	282	__le16 extended_ht_cap_info;
	283	__le32 tx_BF_cap_info;
	284	u8 antenna_selection_info;
	285	} __attribute__ ((packed));
	286
	287	/**
	288	* struct ieee80211_ht_cap - HT additional information
	289	*
	290	* This structure refers to "HT information element" as
	291	* described in 802.11n draft section 7.3.2.53
	292	*/
	293	struct ieee80211_ht_addt_info {
	294	u8 control_chan;
	295	u8 ht_param;
	296	__le16 operation_mode;
	297	__le16 stbc_param;
	298	u8 basic_set[16];
	299	} __attribute__ ((packed));
	300
	301	/* 802.11n HT capabilities masks */
	302	#define IEEE80211_HT_CAP_SUP_WIDTH 0x0002
	303	#define IEEE80211_HT_CAP_MIMO_PS 0x000C
	304	#define IEEE80211_HT_CAP_GRN_FLD 0x0010
	305	#define IEEE80211_HT_CAP_SGI_20 0x0020
	306	#define IEEE80211_HT_CAP_SGI_40 0x0040
	307	#define IEEE80211_HT_CAP_DELAY_BA 0x0400
	308	#define IEEE80211_HT_CAP_MAX_AMSDU 0x0800
edcdf8b2	309	/* 802.11n HT capability AMPDU settings */
6b4e3241 RR	310	#define IEEE80211_HT_CAP_AMPDU_FACTOR 0x03
6b4e3241 RR	311	#define IEEE80211_HT_CAP_AMPDU_DENSITY 0x1C
edcdf8b2 RR	312	/* 802.11n HT capability MSC set */
	313	#define IEEE80211_SUPP_MCS_SET_UEQM 4
	314	#define IEEE80211_HT_CAP_MAX_STREAMS 4
	315	#define IEEE80211_SUPP_MCS_SET_LEN 10
	316	/* maximum streams the spec allows */
	317	#define IEEE80211_HT_CAP_MCS_TX_DEFINED 0x01
	318	#define IEEE80211_HT_CAP_MCS_TX_RX_DIFF 0x02
	319	#define IEEE80211_HT_CAP_MCS_TX_STREAMS 0x0C
	320	#define IEEE80211_HT_CAP_MCS_TX_UEQM 0x10
6b4e3241 RR	321	/* 802.11n HT IE masks */
6b4e3241 RR	322	#define IEEE80211_HT_IE_CHA_SEC_OFFSET 0x03
9306102e EG	323	#define IEEE80211_HT_IE_CHA_SEC_ABOVE 0x01
9306102e EG	324	#define IEEE80211_HT_IE_CHA_SEC_BELOW 0x03
6b4e3241 RR	325	#define IEEE80211_HT_IE_CHA_WIDTH 0x04
	326	#define IEEE80211_HT_IE_HT_PROTECTION 0x0003
	327	#define IEEE80211_HT_IE_NON_GF_STA_PRSNT 0x0004
	328	#define IEEE80211_HT_IE_NON_HT_STA_PRSNT 0x0010
a9de8ce0	329
e53cfe0e	330	/* MIMO Power Save Modes */
edcdf8b2 RR	331	#define WLAN_HT_CAP_MIMO_PS_STATIC 0
	332	#define WLAN_HT_CAP_MIMO_PS_DYNAMIC 1
	333	#define WLAN_HT_CAP_MIMO_PS_INVALID 2
	334	#define WLAN_HT_CAP_MIMO_PS_DISABLED 3
e53cfe0e	335
a9de8ce0 JB	336	/* Authentication algorithms */
	337	#define WLAN_AUTH_OPEN 0
	338	#define WLAN_AUTH_SHARED_KEY 1
	339	#define WLAN_AUTH_FAST_BSS_TRANSITION 2
	340	#define WLAN_AUTH_LEAP 128
	341
	342	#define WLAN_AUTH_CHALLENGE_LEN 128
	343
	344	#define WLAN_CAPABILITY_ESS (1<<0)
	345	#define WLAN_CAPABILITY_IBSS (1<<1)
	346	#define WLAN_CAPABILITY_CF_POLLABLE (1<<2)
	347	#define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
	348	#define WLAN_CAPABILITY_PRIVACY (1<<4)
	349	#define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5)
	350	#define WLAN_CAPABILITY_PBCC (1<<6)
	351	#define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
	352	/* 802.11h */
	353	#define WLAN_CAPABILITY_SPECTRUM_MGMT (1<<8)
	354	#define WLAN_CAPABILITY_QOS (1<<9)
	355	#define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
	356	#define WLAN_CAPABILITY_DSSS_OFDM (1<<13)
	357
5628221c DD	358	/* 802.11g ERP information element */
	359	#define WLAN_ERP_NON_ERP_PRESENT (1<<0)
	360	#define WLAN_ERP_USE_PROTECTION (1<<1)
	361	#define WLAN_ERP_BARKER_PREAMBLE (1<<2)
	362
	363	/* WLAN_ERP_BARKER_PREAMBLE values */
	364	enum {
	365	WLAN_ERP_PREAMBLE_SHORT = 0,
	366	WLAN_ERP_PREAMBLE_LONG = 1,
	367	};
	368
a9de8ce0 JB	369	/* Status codes */
	370	enum ieee80211_statuscode {
	371	WLAN_STATUS_SUCCESS = 0,
	372	WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
	373	WLAN_STATUS_CAPS_UNSUPPORTED = 10,
	374	WLAN_STATUS_REASSOC_NO_ASSOC = 11,
	375	WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
	376	WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
	377	WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
	378	WLAN_STATUS_CHALLENGE_FAIL = 15,
	379	WLAN_STATUS_AUTH_TIMEOUT = 16,
	380	WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
	381	WLAN_STATUS_ASSOC_DENIED_RATES = 18,
	382	/* 802.11b */
	383	WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
	384	WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
	385	WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
	386	/* 802.11h */
	387	WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
	388	WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
	389	WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
	390	/* 802.11g */
	391	WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
	392	WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
	393	/* 802.11i */
	394	WLAN_STATUS_INVALID_IE = 40,
	395	WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
	396	WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
	397	WLAN_STATUS_INVALID_AKMP = 43,
	398	WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
	399	WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
	400	WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
6b4e3241 RR	401	/* 802.11e */
	402	WLAN_STATUS_UNSPECIFIED_QOS = 32,
	403	WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33,
	404	WLAN_STATUS_ASSOC_DENIED_LOWACK = 34,
	405	WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35,
	406	WLAN_STATUS_REQUEST_DECLINED = 37,
	407	WLAN_STATUS_INVALID_QOS_PARAM = 38,
	408	WLAN_STATUS_CHANGE_TSPEC = 39,
	409	WLAN_STATUS_WAIT_TS_DELAY = 47,
	410	WLAN_STATUS_NO_DIRECT_LINK = 48,
	411	WLAN_STATUS_STA_NOT_PRESENT = 49,
	412	WLAN_STATUS_STA_NOT_QSTA = 50,
a9de8ce0 JB	413	};
	414
	415
	416	/* Reason codes */
	417	enum ieee80211_reasoncode {
	418	WLAN_REASON_UNSPECIFIED = 1,
	419	WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
	420	WLAN_REASON_DEAUTH_LEAVING = 3,
	421	WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
	422	WLAN_REASON_DISASSOC_AP_BUSY = 5,
	423	WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
	424	WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
	425	WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
	426	WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
	427	/* 802.11h */
	428	WLAN_REASON_DISASSOC_BAD_POWER = 10,
	429	WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
	430	/* 802.11i */
	431	WLAN_REASON_INVALID_IE = 13,
	432	WLAN_REASON_MIC_FAILURE = 14,
	433	WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
	434	WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
	435	WLAN_REASON_IE_DIFFERENT = 17,
	436	WLAN_REASON_INVALID_GROUP_CIPHER = 18,
	437	WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
	438	WLAN_REASON_INVALID_AKMP = 20,
	439	WLAN_REASON_UNSUPP_RSN_VERSION = 21,
	440	WLAN_REASON_INVALID_RSN_IE_CAP = 22,
	441	WLAN_REASON_IEEE8021X_FAILED = 23,
	442	WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
6b4e3241 RR	443	/* 802.11e */
	444	WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32,
	445	WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33,
	446	WLAN_REASON_DISASSOC_LOW_ACK = 34,
	447	WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35,
	448	WLAN_REASON_QSTA_LEAVE_QBSS = 36,
	449	WLAN_REASON_QSTA_NOT_USE = 37,
	450	WLAN_REASON_QSTA_REQUIRE_SETUP = 38,
	451	WLAN_REASON_QSTA_TIMEOUT = 39,
	452	WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45,
a9de8ce0 JB	453	};
	454
	455
	456	/* Information Element IDs */
	457	enum ieee80211_eid {
	458	WLAN_EID_SSID = 0,
	459	WLAN_EID_SUPP_RATES = 1,
	460	WLAN_EID_FH_PARAMS = 2,
	461	WLAN_EID_DS_PARAMS = 3,
	462	WLAN_EID_CF_PARAMS = 4,
	463	WLAN_EID_TIM = 5,
	464	WLAN_EID_IBSS_PARAMS = 6,
	465	WLAN_EID_CHALLENGE = 16,
	466	/* 802.11d */
	467	WLAN_EID_COUNTRY = 7,
	468	WLAN_EID_HP_PARAMS = 8,
	469	WLAN_EID_HP_TABLE = 9,
	470	WLAN_EID_REQUEST = 10,
6b4e3241 RR	471	/* 802.11e */
	472	WLAN_EID_QBSS_LOAD = 11,
	473	WLAN_EID_EDCA_PARAM_SET = 12,
	474	WLAN_EID_TSPEC = 13,
	475	WLAN_EID_TCLAS = 14,
	476	WLAN_EID_SCHEDULE = 15,
	477	WLAN_EID_TS_DELAY = 43,
	478	WLAN_EID_TCLAS_PROCESSING = 44,
	479	WLAN_EID_QOS_CAPA = 46,
d619ee08 LCC	480	/* 802.11s
	481	*
	482	* All mesh EID numbers are pending IEEE 802.11 ANA approval.
	483	* The numbers have been incremented from those suggested in
	484	* 802.11s/D2.0 so that MESH_CONFIG does not conflict with
	485	* EXT_SUPP_RATES.
	486	*/
	487	WLAN_EID_MESH_CONFIG = 51,
	488	WLAN_EID_MESH_ID = 52,
	489	WLAN_EID_PEER_LINK = 55,
	490	WLAN_EID_PREQ = 68,
	491	WLAN_EID_PREP = 69,
	492	WLAN_EID_PERR = 70,
a9de8ce0 JB	493	/* 802.11h */
	494	WLAN_EID_PWR_CONSTRAINT = 32,
	495	WLAN_EID_PWR_CAPABILITY = 33,
	496	WLAN_EID_TPC_REQUEST = 34,
	497	WLAN_EID_TPC_REPORT = 35,
	498	WLAN_EID_SUPPORTED_CHANNELS = 36,
	499	WLAN_EID_CHANNEL_SWITCH = 37,
	500	WLAN_EID_MEASURE_REQUEST = 38,
	501	WLAN_EID_MEASURE_REPORT = 39,
	502	WLAN_EID_QUIET = 40,
	503	WLAN_EID_IBSS_DFS = 41,
	504	/* 802.11g */
	505	WLAN_EID_ERP_INFO = 42,
	506	WLAN_EID_EXT_SUPP_RATES = 50,
6b4e3241 RR	507	/* 802.11n */
	508	WLAN_EID_HT_CAPABILITY = 45,
	509	WLAN_EID_HT_EXTRA_INFO = 61,
a9de8ce0 JB	510	/* 802.11i */
	511	WLAN_EID_RSN = 48,
	512	WLAN_EID_WPA = 221,
	513	WLAN_EID_GENERIC = 221,
	514	WLAN_EID_VENDOR_SPECIFIC = 221,
	515	WLAN_EID_QOS_PARAMETER = 222
	516	};
	517
6b4e3241 RR	518	/* Action category code */
	519	enum ieee80211_category {
	520	WLAN_CATEGORY_SPECTRUM_MGMT = 0,
	521	WLAN_CATEGORY_QOS = 1,
	522	WLAN_CATEGORY_DLS = 2,
	523	WLAN_CATEGORY_BACK = 3,
	524	WLAN_CATEGORY_WMM = 17,
	525	};
	526
	527	/* BACK action code */
	528	enum ieee80211_back_actioncode {
	529	WLAN_ACTION_ADDBA_REQ = 0,
	530	WLAN_ACTION_ADDBA_RESP = 1,
	531	WLAN_ACTION_DELBA = 2,
	532	};
	533
07db2183 RR	534	/* BACK (block-ack) parties */
	535	enum ieee80211_back_parties {
	536	WLAN_BACK_RECIPIENT = 0,
	537	WLAN_BACK_INITIATOR = 1,
	538	WLAN_BACK_TIMER = 2,
	539	};
	540
6b4e3241 RR	541	/* A-MSDU 802.11n */
	542	#define IEEE80211_QOS_CONTROL_A_MSDU_PRESENT 0x0080
	543
a9de8ce0 JB	544	/* cipher suite selectors */
	545	#define WLAN_CIPHER_SUITE_USE_GROUP 0x000FAC00
	546	#define WLAN_CIPHER_SUITE_WEP40 0x000FAC01
	547	#define WLAN_CIPHER_SUITE_TKIP 0x000FAC02
	548	/* reserved: 0x000FAC03 */
	549	#define WLAN_CIPHER_SUITE_CCMP 0x000FAC04
	550	#define WLAN_CIPHER_SUITE_WEP104 0x000FAC05
	551
	552	#define WLAN_MAX_KEY_LEN 32
	553
f97df02e JB	554	/**
	555	* ieee80211_get_SA - get pointer to SA
	556	*
	557	* Given an 802.11 frame, this function returns the offset
	558	* to the source address (SA). It does not verify that the
	559	* header is long enough to contain the address, and the
	560	* header must be long enough to contain the frame control
	561	* field.
	562	*
	563	* @hdr: the frame
	564	*/
	565	static inline u8 ieee80211_get_SA(struct ieee80211_hdr hdr)
	566	{
5a433b3a HH	567	__le16 fc = hdr->frame_control;
	568	fc &= cpu_to_le16(IEEE80211_FCTL_TODS \| IEEE80211_FCTL_FROMDS);
	569
	570	switch (fc) {
	571	case __constant_cpu_to_le16(IEEE80211_FCTL_FROMDS):
	572	return hdr->addr3;
	573	case __constant_cpu_to_le16(IEEE80211_FCTL_TODS\|IEEE80211_FCTL_FROMDS):
	574	return hdr->addr4;
	575	default:
	576	return hdr->addr2;
f97df02e	577	}
f97df02e JB	578	}
	579
	580	/**
	581	* ieee80211_get_DA - get pointer to DA
	582	*
	583	* Given an 802.11 frame, this function returns the offset
	584	* to the destination address (DA). It does not verify that
	585	* the header is long enough to contain the address, and the
	586	* header must be long enough to contain the frame control
	587	* field.
	588	*
	589	* @hdr: the frame
	590	*/
	591	static inline u8 ieee80211_get_DA(struct ieee80211_hdr hdr)
	592	{
5a433b3a HH	593	__le16 fc = hdr->frame_control;
5a433b3a HH	594	fc &= cpu_to_le16(IEEE80211_FCTL_TODS);
f97df02e	595
5a433b3a	596	if (fc)
f97df02e	597	return hdr->addr3;
5a433b3a HH	598	else
5a433b3a HH	599	return hdr->addr1;
f97df02e JB	600	}
	601
	602	/**
	603	* ieee80211_get_morefrag - determine whether the MOREFRAGS bit is set
	604	*
	605	* This function determines whether the "more fragments" bit is set
	606	* in the frame.
	607	*
	608	* @hdr: the frame
	609	*/
	610	static inline int ieee80211_get_morefrag(struct ieee80211_hdr *hdr)
	611	{
5a433b3a HH	612	__le16 fc = hdr->frame_control;
5a433b3a HH	613	return !!(fc & cpu_to_le16(IEEE80211_FCTL_MOREFRAGS));
f97df02e JB	614	}
f97df02e JB	615
a9de8ce0	616	#endif /* IEEE80211_H */