/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
// MAC_Structures.h
//
// This file contains the definitions and data structures used by SW-MAC.
//
// Revision Histoy
//=================
// 0.1      2002        UN00
// 0.2      20021004    PD43 CCLiu6
//          20021018    PD43 CCLiu6
//                      Add enum_TxRate type
//                      Modify enum_STAState type
// 0.3      20021023    PE23 CYLiu update MAC session struct
//          20021108
//          20021122    PD43 Austin
//                      Deleted some unused.
//          20021129    PD43 Austin
//			20030617	increase the 802.11g definition
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/

#ifndef _MAC_Structures_H_
#define _MAC_Structures_H_

#include <linux/skbuff.h>

/*=========================================================
// Some miscellaneous definitions
//-----*/
#define MAX_CHANNELS                        30
#define MAC_ADDR_LENGTH                     6
#define MAX_WEP_KEY_SIZE                    16  /* 128 bits */
#define	MAX_802_11_FRAGMENT_NUMBER		10 /* By spec */

/* ========================================================
// 802.11 Frame define
//----- */
#define MASK_PROTOCOL_VERSION_TYPE	0x0F
#define MASK_FRAGMENT_NUMBER		0x000F
#define SEQUENCE_NUMBER_SHIFT		4
#define DIFFER_11_TO_3				18
#define DOT_11_MAC_HEADER_SIZE		24
#define DOT_11_SNAP_SIZE			6
#define DOT_11_DURATION_OFFSET		2
/* Sequence control offset */
#define DOT_11_SEQUENCE_OFFSET		22
/* The start offset of 802.11 Frame// */
#define DOT_11_TYPE_OFFSET			30
#define DOT_11_DATA_OFFSET          24
#define DOT_11_DA_OFFSET			4
#define DOT_3_TYPE_ARP				0x80F3
#define DOT_3_TYPE_IPX				0x8137
#define DOT_3_TYPE_OFFSET			12


#define ETHERNET_HEADER_SIZE			14
#define MAX_ETHERNET_PACKET_SIZE		1514


/* -----  management : Type of Bits (2, 3) and Subtype of Bits (4, 5, 6, 7) */
#define MAC_SUBTYPE_MNGMNT_ASSOC_REQUEST    0x00
#define MAC_SUBTYPE_MNGMNT_ASSOC_RESPONSE   0x10
#define MAC_SUBTYPE_MNGMNT_REASSOC_REQUEST  0x20
#define MAC_SUBTYPE_MNGMNT_REASSOC_RESPONSE 0x30
#define MAC_SUBTYPE_MNGMNT_PROBE_REQUEST    0x40
#define MAC_SUBTYPE_MNGMNT_PROBE_RESPONSE   0x50
#define MAC_SUBTYPE_MNGMNT_BEACON           0x80
#define MAC_SUBTYPE_MNGMNT_ATIM             0x90
#define MAC_SUBTYPE_MNGMNT_DISASSOCIATION   0xA0
#define MAC_SUBTYPE_MNGMNT_AUTHENTICATION   0xB0
#define MAC_SUBTYPE_MNGMNT_DEAUTHENTICATION 0xC0

/* -----  control : Type of Bits (2, 3) and Subtype of Bits (4, 5, 6, 7) */
#define MAC_SUBTYPE_CONTROL_PSPOLL          0xA4
#define MAC_SUBTYPE_CONTROL_RTS             0xB4
#define MAC_SUBTYPE_CONTROL_CTS             0xC4
#define MAC_SUBTYPE_CONTROL_ACK             0xD4
#define MAC_SUBTYPE_CONTROL_CFEND           0xE4
#define MAC_SUBTYPE_CONTROL_CFEND_CFACK     0xF4

/* -----  data : Type of Bits (2, 3) and Subtype of Bits (4, 5, 6, 7) */
#define MAC_SUBTYPE_DATA                    0x08
#define MAC_SUBTYPE_DATA_CFACK              0x18
#define MAC_SUBTYPE_DATA_CFPOLL             0x28
#define MAC_SUBTYPE_DATA_CFACK_CFPOLL       0x38
#define MAC_SUBTYPE_DATA_NULL               0x48
#define MAC_SUBTYPE_DATA_CFACK_NULL         0x58
#define MAC_SUBTYPE_DATA_CFPOLL_NULL        0x68
#define MAC_SUBTYPE_DATA_CFACK_CFPOLL_NULL  0x78

/* -----  Frame Type of Bits (2, 3) */
#define MAC_TYPE_MANAGEMENT                 0x00
#define MAC_TYPE_CONTROL                    0x04
#define MAC_TYPE_DATA                       0x08

/* ----- definitions for Management Frame Element ID (1 BYTE) */
#define ELEMENT_ID_SSID                     0
#define ELEMENT_ID_SUPPORTED_RATES          1
#define ELEMENT_ID_FH_PARAMETER_SET         2
#define ELEMENT_ID_DS_PARAMETER_SET         3
#define ELEMENT_ID_CF_PARAMETER_SET         4
#define ELEMENT_ID_TIM                      5
#define ELEMENT_ID_IBSS_PARAMETER_SET       6
/* 7~15 reserverd */
#define ELEMENT_ID_CHALLENGE_TEXT           16
/* 17~31 reserved for challenge text extension */
/* 32~255 reserved */
/*--  11G  -- */
#define ELEMENT_ID_ERP_INFORMATION			42
#define ELEMENT_ID_EXTENDED_SUPPORTED_RATES 50

/* --  WPA  -- */

#define ELEMENT_ID_RSN_WPA					221
#ifdef _WPA2_
#define ELEMENT_ID_RSN_WPA2				    48
#endif /* endif WPA2 */

#define WLAN_MAX_PAIRWISE_CIPHER_SUITE_COUNT    ((u16) 6)
#define WLAN_MAX_AUTH_KEY_MGT_SUITE_LIST_COUNT  ((u16) 2)

/* ===================================================================
*  Reason Code (Table 18): indicate the reason of DisAssoc, DeAuthen
*  length of ReasonCode is 2 Octs.
* =================================================================== */
#define REASON_REASERED             0
#define REASON_UNSPECIDIED          1
#define REASON_PREAUTH_INVALID      2
#define DEAUTH_REASON_LEFT_BSS      3
#define DISASS_REASON_AP_INACTIVE   4
#define DISASS_REASON_AP_BUSY       5
#define REASON_CLASS2_FRAME_FROM_NONAUTH_STA    6
#define REASON_CLASS3_FRAME_FROM_NONASSO_STA    7
#define DISASS_REASON_LEFT_BSS      8
#define REASON_NOT_AUTH_YET         9
/* 802.11i define */
#define REASON_INVALID_IE						13
#define REASON_MIC_ERROR						14
#define REASON_4WAY_HANDSHAKE_TIMEOUT			15
#define REASON_GROUPKEY_UPDATE_TIMEOUT			16
#define REASON_IE_DIFF_4WAY_ASSOC				17
#define REASON_INVALID_MULTICAST_CIPHER			18
#define REASON_INVALID_UNICAST_CIPHER			19
#define REASON_INVALID_AKMP						20
#define REASON_UNSUPPORTED_RSNIE_VERSION		21
#define REASON_INVALID_RSNIE_CAPABILITY			22
#define REASON_802_1X_AUTH_FAIL					23
#define	REASON_CIPHER_REJECT_PER_SEC_POLICY		14

/*
//===========================================================
// enum_MMPDUResultCode --
//   Status code (2 Octs) in the MMPDU's frame body. Table.19
//
//===========================================================
enum enum_MMPDUResultCode
{
//    SUCCESS   = 0,      // Redefined
    UNSPECIFIED_FAILURE                         = 1,

    // 2 - 9 Reserved

    NOT_SUPPROT_CAPABILITIES                    = 10,

    //REASSOCIATION_DENIED
    //
    REASSOC_DENIED_UNABLE_CFM_ASSOC_EXIST       = 11,

    //ASSOCIATION_DENIED_NOT_IN_STANDARD
    //
    ASSOC_DENIED_REASON_NOT_IN_STANDARD         = 12,
    PEER_NOT_SUPPORT_AUTH_ALGORITHM             = 13,
    AUTH_SEQNUM_OUT_OF_EXPECT                   = 14,
    AUTH_REJECT_REASON_CHALLENGE_FAIL           = 15,
    AUTH_REJECT_REASON_WAIT_TIMEOUT             = 16,
    ASSOC_DENIED_REASON_AP_BUSY                 = 17,
    ASSOC_DENIED_REASON_NOT_SUPPORT_BASIC_RATE  = 18
} WB_MMPDURESULTCODE, *PWB_MMPDURESULTCODE;
*/

#define	RATE_BITMAP_1M				1
#define	RATE_BITMAP_2M				2
#define	RATE_BITMAP_5dot5M			5
#define RATE_BITMAP_6M				6
#define RATE_BITMAP_9M				9
#define RATE_BITMAP_11M				11
#define RATE_BITMAP_12M				12
#define RATE_BITMAP_18M				18
#define RATE_BITMAP_22M				22
#define RATE_BITMAP_24M				24
#define RATE_BITMAP_33M				17
#define RATE_BITMAP_36M				19
#define RATE_BITMAP_48M				25
#define RATE_BITMAP_54M				28

#define RATE_AUTO					0
#define RATE_1M						2
#define RATE_2M						4
#define RATE_5dot5M					11
#define RATE_6M						12
#define RATE_9M						18
#define RATE_11M					22
#define RATE_12M					24
#define RATE_18M					36
#define RATE_22M					44
#define RATE_24M					48
#define RATE_33M					66
#define RATE_36M					72
#define RATE_48M					96
#define RATE_54M					108
#define RATE_MAX					255

/* CAPABILITY */
#define CAPABILITY_ESS_BIT				0x0001
#define CAPABILITY_IBSS_BIT				0x0002
#define CAPABILITY_CF_POLL_BIT			0x0004
#define CAPABILITY_CF_POLL_REQ_BIT		0x0008
#define CAPABILITY_PRIVACY_BIT			0x0010
#define CAPABILITY_SHORT_PREAMBLE_BIT	0x0020
#define CAPABILITY_PBCC_BIT				0x0040
#define CAPABILITY_CHAN_AGILITY_BIT		0x0080
#define CAPABILITY_SHORT_SLOT_TIME_BIT	0x0400
#define CAPABILITY_DSSS_OFDM_BIT		0x2000


struct Capability_Information_Element {
  union {
	u16 __attribute__ ((packed)) wValue;
    #ifdef _BIG_ENDIAN_  /* 20060926 add by anson's endian */
    struct _Capability {
	/* --  11G  -- */
	u8	Reserved3:2;
	u8	DSSS_OFDM:1;
	u8	Reserved2:2;
	u8	Short_Slot_Time:1;
	u8    Reserved1:2;
	u8    Channel_Agility:1;
	u8    PBCC:1;
	u8    ShortPreamble:1;
	u8    CF_Privacy:1;
	u8    CF_Poll_Request:1;
	u8    CF_Pollable:1;
	u8    IBSS:1;
	u8    ESS:1;
    } __attribute__ ((packed)) Capability;
    #else
    struct _Capability {
	u8    ESS:1;
	u8    IBSS:1;
	u8    CF_Pollable:1;
	u8    CF_Poll_Request:1;
	u8    CF_Privacy:1;
	u8    ShortPreamble:1;
	u8    PBCC:1;
	u8    Channel_Agility:1;
	u8    Reserved1:2;
		/* --  11G  -- */
		u8	Short_Slot_Time:1;
		u8	Reserved2:2;
		u8	DSSS_OFDM:1;
		u8	Reserved3:2;
    } __attribute__ ((packed)) Capability;
    #endif
  } __attribute__ ((packed)) ;
} __attribute__ ((packed));

struct FH_Parameter_Set_Element {
    u8    Element_ID;
    u8    Length;
    u8    Dwell_Time[2];
    u8    Hop_Set;
    u8    Hop_Pattern;
    u8    Hop_Index;
};

struct DS_Parameter_Set_Element {
    u8    Element_ID;
    u8    Length;
    u8    Current_Channel;
};

struct Supported_Rates_Element {
    u8    Element_ID;
    u8    Length;
    u8    SupportedRates[8];
} __attribute__ ((packed));

struct SSID_Element {
    u8    Element_ID;
    u8    Length;
    u8    SSID[32];
} __attribute__ ((packed)) ;

struct CF_Parameter_Set_Element {
    u8    Element_ID;
    u8    Length;
    u8    CFP_Count;
    u8    CFP_Period;
    u8    CFP_MaxDuration[2];     /* in Time Units */
    u8    CFP_DurRemaining[2];    /* in time units */
};

struct TIM_Element {
    u8    Element_ID;
    u8    Length;
    u8    DTIM_Count;
    u8    DTIM_Period;
    u8    Bitmap_Control;
    u8    Partial_Virtual_Bitmap[251];
};

struct IBSS_Parameter_Set_Element {
    u8    Element_ID;
    u8    Length;
    u8    ATIM_Window[2];
};

struct Challenge_Text_Element {
    u8    Element_ID;
    u8    Length;
    u8    Challenge_Text[253];
};

struct PHY_Parameter_Set_Element {
/*  int     aSlotTime; */
/*  int     aSifsTime; */
    s32     aCCATime;
    s32     aRxTxTurnaroundTime;
    s32     aTxPLCPDelay;
    s32     RxPLCPDelay;
    s32     aRxTxSwitchTime;
    s32     aTxRampOntime;
    s32     aTxRampOffTime;
    s32     aTxRFDelay;
    s32     aRxRFDelay;
    s32     aAirPropagationTime;
    s32     aMACProcessingDelay;
    s32     aPreambleLength;
    s32     aPLCPHeaderLength;
    s32     aMPDUDurationFactor;
    s32     aMPDUMaxLength;
/*  int     aCWmin; */
/*  int     aCWmax; */
};

/* --  11G  -- */
struct ERP_Information_Element {
    u8	Element_ID;
    u8	Length;
    #ifdef _BIG_ENDIAN_ /* 20060926 add by anson's endian */
	u8	Reserved:5;   /* 20060926 add by anson */
	u8	Barker_Preamble_Mode:1;
	u8	Use_Protection:1;
       u8	NonERP_Present:1;
    #else
	u8	NonERP_Present:1;
	u8	Use_Protection:1;
	u8	Barker_Preamble_Mode:1;
	u8	Reserved:5;
    #endif
};

struct Extended_Supported_Rates_Element {
    u8	Element_ID;
    u8	Length;
    u8	ExtendedSupportedRates[255];
} __attribute__ ((packed));

/* WPA(802.11i draft 3.0) */
#define VERSION_WPA				1
#ifdef _WPA2_
#define VERSION_WPA2            1
#endif /* end def  _WPA2_ */
/* WPA2.0 OUI=00:50:F2, the MSB is reserved for suite type */
#define OUI_WPA					0x00F25000
#ifdef _WPA2_
/* for wpa2 change to 0x00ACOF04 by Ws 26/04/04 */
#define OUI_WPA2				0x00AC0F00
#endif /* end def _WPA2_ */

#define OUI_WPA_ADDITIONAL		0x01
#define WLAN_MIN_RSN_WPA_LENGTH                 6 /* added by ws 09/10/04 */
#ifdef _WPA2_
#define WLAN_MIN_RSN_WPA2_LENGTH                2 /* Fix to 2 09/14/05 */
#endif /* end def _WPA2_ */

#define oui_wpa                  (u32)(OUI_WPA|OUI_WPA_ADDITIONAL)

#define WPA_OUI_BIG    ((u32) 0x01F25000)/* added by ws 09/23/04 */
#define WPA_OUI_LITTLE  ((u32) 0x01F25001)/* added by ws 09/23/04 */
/* 20061108 For WPS. It's little endian. Big endian is 0x0050F204 */
#define WPA_WPS_OUI				cpu_to_le32(0x04F25000)

/* -----WPA2----- */
#ifdef _WPA2_
#define WPA2_OUI_BIG    ((u32)0x01AC0F00)
#define WPA2_OUI_LITTLE ((u32)0x01AC0F01)
#endif /* end def _WPA2_ */

/* Authentication suite */
#define OUI_AUTH_WPA_NONE           0x00 /* for WPA_NONE */
#define OUI_AUTH_8021X				0x01
#define OUI_AUTH_PSK				0x02
/* Cipher suite */
#define OUI_CIPHER_GROUP_KEY        0x00  /* added by ws 05/21/04 */
#define OUI_CIPHER_WEP_40			0x01
#define OUI_CIPHER_TKIP				0x02
#define OUI_CIPHER_CCMP				0x04
#define OUI_CIPHER_WEP_104			0x05

struct suite_selector{
	union{
		u8	Value[4];
		struct _SUIT_ {
			u8	OUI[3];
			u8	Type;
		} SuitSelector;
	};
};

/* --  WPA  -- */
struct	RSN_Information_Element{
	u8					Element_ID;
	u8					Length;
 /* WPA version 2.0 additional field, and should be 00:50:F2:01 */
	struct suite_selector	OuiWPAAdditional;
	u16					Version;
	struct suite_selector		GroupKeySuite;
	u16					PairwiseKeySuiteCount;
	struct suite_selector		PairwiseKeySuite[1];
} __attribute__ ((packed));
struct RSN_Auth_Sub_Information_Element {
	u16				AuthKeyMngtSuiteCount;
	struct suite_selector	AuthKeyMngtSuite[1];
} __attribute__ ((packed));

/* --  WPA2  -- */
struct RSN_Capability_Element {
  union {
	u16	__attribute__ ((packed))	wValue;
    #ifdef _BIG_ENDIAN_	 /* 20060927 add by anson's endian */
    struct _RSN_Capability {
	u16   __attribute__ ((packed))  Reserved2:8; /* 20051201 */
	u16   __attribute__ ((packed))  Reserved1:2;
	u16   __attribute__ ((packed))  GTK_Replay_Counter:2;
	u16   __attribute__ ((packed))  PTK_Replay_Counter:2;
	u16   __attribute__ ((packed))  No_Pairwise:1;
	u16   __attribute__ ((packed))  Pre_Auth:1;
    } __attribute__ ((packed))  RSN_Capability;
    #else
    struct _RSN_Capability {
	u16   __attribute__ ((packed))  Pre_Auth:1;
	u16   __attribute__ ((packed))  No_Pairwise:1;
	u16   __attribute__ ((packed))  PTK_Replay_Counter:2;
	u16   __attribute__ ((packed))  GTK_Replay_Counter:2;
	u16   __attribute__ ((packed))  Reserved1:2;
	u16   __attribute__ ((packed))  Reserved2:8; /* 20051201 */
    } __attribute__ ((packed))  RSN_Capability;
    #endif

  } __attribute__ ((packed)) ;
} __attribute__ ((packed)) ;

#ifdef _WPA2_
struct pmkid {
  u8 pValue[16];
};

struct	WPA2_RSN_Information_Element {
	u8					Element_ID;
	u8					Length;
	u16					Version;
	struct suite_selector		GroupKeySuite;
	u16					PairwiseKeySuiteCount;
	struct suite_selector		PairwiseKeySuite[1];

} __attribute__ ((packed));

struct WPA2_RSN_Auth_Sub_Information_Element {
	u16				AuthKeyMngtSuiteCount;
	struct suite_selector	AuthKeyMngtSuite[1];
} __attribute__ ((packed));


struct PMKID_Information_Element {
	u16				PMKID_Count;
	struct pmkid pmkid[16];
} __attribute__ ((packed));

#endif /* enddef _WPA2_ */
/*============================================================
// MAC Frame structure (different type) and subfield structure
//============================================================*/
struct MAC_frame_control {
/* a combination of the [Protocol Version, Control Type, Control Subtype]*/
    u8    mac_frame_info;
/* 20060927 add by anson's endian */
    #ifdef _BIG_ENDIAN_
    u8    order:1;
    u8    WEP:1;
    u8    more_data:1;
    u8    pwr_mgt:1;
    u8    retry:1;
    u8    more_frag:1;
    u8    from_ds:1;
    u8    to_ds:1;
    #else
    u8    to_ds:1;
    u8    from_ds:1;
    u8    more_frag:1;
    u8    retry:1;
    u8    pwr_mgt:1;
    u8    more_data:1;
    u8    WEP:1;
    u8    order:1;
    #endif
} __attribute__ ((packed));

struct Management_Frame {
/* 2B, ToDS,FromDS,MoreFrag,MoreData,Order=0 */
    struct MAC_frame_control frame_control;
    u16		duration;
    u8		DA[MAC_ADDR_LENGTH];			/* Addr1 */
    u8		SA[MAC_ADDR_LENGTH];			/* Addr2 */
    u8		BSSID[MAC_ADDR_LENGTH];			/* Addr3 */
    u16		Sequence_Control;
    /* Management Frame Body <= 325 bytes */
    /* FCS 4 bytes */
} __attribute__ ((packed));

/* SW-MAC don't Tx/Rx Control-Frame, HW-MAC do it. */
struct Control_Frame {
/* ToDS,FromDS,MoreFrag,Retry,MoreData,WEP,Order=0 */
    struct MAC_frame_control frame_control;
    u16		duration;
    u8		RA[MAC_ADDR_LENGTH];
    u8		TA[MAC_ADDR_LENGTH];
    u16		FCS;
} __attribute__ ((packed));

struct Data_Frame {
    struct MAC_frame_control frame_control;
    u16		duration;
    u8		Addr1[MAC_ADDR_LENGTH];
    u8		Addr2[MAC_ADDR_LENGTH];
    u8		Addr3[MAC_ADDR_LENGTH];
    u16		Sequence_Control;
    u8		Addr4[MAC_ADDR_LENGTH]; /* only exist when ToDS=FromDS=1 */
    /* Data Frame Body <= 2312 */
    /* FCS */
} __attribute__ ((packed));

struct Disassociation_Frame_Body {
    u16    reasonCode;
} __attribute__ ((packed));

struct Association_Request_Frame_Body {
    u16    capability_information;
    u16    listenInterval;
    u8     Current_AP_Address[MAC_ADDR_LENGTH];/* for reassociation only */
    /*  SSID (2+32 bytes) */
    /*  Supported_Rates (2+8 bytes) */
} __attribute__ ((packed));

struct Association_Response_Frame_Body {
    u16    capability_information;
    u16    statusCode;
    u16    Association_ID;
    struct Supported_Rates_Element supportedRates;
} __attribute__ ((packed));

/*struct Reassociation_Request_Frame_Body
{
    u16    capability_information;
    u16    listenInterval;
    u8     Current_AP_Address[MAC_ADDR_LENGTH];
    // SSID (2+32 bytes)
    // Supported_Rates (2+8 bytes)
};*/
/* eliminated by WS 07/22/04 comboined with associateion request frame. */

struct Reassociation_Response_Frame_Body {
    u16    capability_information;
    u16    statusCode;
    u16    Association_ID;
    struct Supported_Rates_Element supportedRates;
} __attribute__ ((packed));

struct Deauthentication_Frame_Body {
    u16    reasonCode;
} __attribute__ ((packed));


struct Probe_Response_Frame_Body {
    u16    Timestamp;
    u16    Beacon_Interval;
    u16    Capability_Information;
    /* SSID
    // Supported_Rates
    // PHY parameter Set (DS Parameters)
    // CF parameter Set
    // IBSS parameter Set */
} __attribute__ ((packed));

struct Authentication_Frame_Body {
    u16    algorithmNumber;
    u16    sequenceNumber;
    u16    statusCode;
	/* NB: don't include ChallengeText in this structure
	// struct Challenge_Text_Element sChallengeTextElement;
	// wkchen added */
} __attribute__ ((packed));


#endif /* _MAC_Structure_H_ */