234 lines
5.9 KiB
C
234 lines
5.9 KiB
C
/*++
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Copyright (c) 1996 Microsoft Corporation
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Module Name:
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arppkt.h
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Abstract:
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Definitions for ATMARP packets
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Revision History:
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Who When What
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-------- -------- ----------------------------------------------
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arvindm 07-29-96 Created
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Notes:
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--*/
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#ifndef _ARP_PKT__H
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#define _ARP_PKT__H
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//
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// Rounded-off size of generic Q.2931 IE header
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//
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#define ROUND_OFF(_size) (((_size) + 3) & ~0x3)
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#define SIZEOF_Q2931_IE ROUND_OFF(sizeof(Q2931_IE))
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#define SIZEOF_AAL_PARAMETERS_IE ROUND_OFF(sizeof(AAL_PARAMETERS_IE))
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#define SIZEOF_ATM_TRAFFIC_DESCR_IE ROUND_OFF(sizeof(ATM_TRAFFIC_DESCRIPTOR_IE))
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#define SIZEOF_ATM_BBC_IE ROUND_OFF(sizeof(ATM_BROADBAND_BEARER_CAPABILITY_IE))
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#define SIZEOF_ATM_BLLI_IE ROUND_OFF(sizeof(ATM_BLLI_IE))
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#define SIZEOF_ATM_QOS_IE ROUND_OFF(sizeof(ATM_QOS_CLASS_IE))
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//
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// Total space required for Information Elements in an outgoing call.
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//
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#define ATMARP_MAKE_CALL_IE_SPACE ( \
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SIZEOF_Q2931_IE + SIZEOF_AAL_PARAMETERS_IE + \
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SIZEOF_Q2931_IE + SIZEOF_ATM_TRAFFIC_DESCR_IE + \
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SIZEOF_Q2931_IE + SIZEOF_ATM_BBC_IE + \
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SIZEOF_Q2931_IE + SIZEOF_ATM_BLLI_IE + \
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SIZEOF_Q2931_IE + SIZEOF_ATM_QOS_IE )
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//
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// Total space required for Information Elements in an outgoing AddParty.
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//
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#define ATMARP_ADD_PARTY_IE_SPACE ( \
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SIZEOF_Q2931_IE + SIZEOF_AAL_PARAMETERS_IE + \
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SIZEOF_Q2931_IE + SIZEOF_ATM_BLLI_IE )
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#define AA_IPV4_ADDRESS_LENGTH 4
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#define CLASSA_MASK 0x000000ff
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#define CLASSB_MASK 0x0000ffff
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#define CLASSC_MASK 0x00ffffff
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#define CLASSD_MASK 0x000000e0
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#define CLASSE_MASK 0xffffffff
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//
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// Standard values
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//
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#define AA_PKT_ATM_FORUM_AF 19
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#define AA_PKT_PRO_IP ((USHORT)0x800)
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//
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// Values for the LLC SNAP header
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//
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#define LLC_SNAP_LLC0 ((UCHAR)0xAA)
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#define LLC_SNAP_LLC1 ((UCHAR)0xAA)
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#define LLC_SNAP_LLC2 ((UCHAR)0x03)
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#define LLC_SNAP_OUI0 ((UCHAR)0x00)
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#define LLC_SNAP_OUI1 ((UCHAR)0x00)
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#define LLC_SNAP_OUI2 ((UCHAR)0x00)
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//
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// Values for EtherType
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//
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#define AA_PKT_ETHERTYPE_IP_NS ((USHORT)0x0008)
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#define AA_PKT_ETHERTYPE_IP ((USHORT)0x800)
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#define AA_PKT_ETHERTYPE_ARP ((USHORT)0x806)
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#include <pshpack1.h>
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//
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// LLC SNAP Header
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//
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typedef struct _AA_PKT_LLC_SNAP_HEADER
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{
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UCHAR LLC[3];
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UCHAR OUI[3];
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USHORT EtherType;
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} AA_PKT_LLC_SNAP_HEADER;
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typedef AA_PKT_LLC_SNAP_HEADER UNALIGNED *PAA_PKT_LLC_SNAP_HEADER;
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//
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// ATMARP Packet Common Header format
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//
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typedef struct _AA_ARP_PKT_HEADER
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{
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AA_PKT_LLC_SNAP_HEADER LLCSNAPHeader;
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USHORT hrd; // Hardware Type
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USHORT pro; // Protocol Type
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UCHAR shtl; // Source HW Addr Type+Length
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UCHAR sstl; // Source HW SubAddr Type+Length
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USHORT op; // Operation Code
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UCHAR spln; // Source Protocol Addr Length
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UCHAR thtl; // Target HW Addr Type+Length
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UCHAR tstl; // Target HW SubAddr Type+Length
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UCHAR tpln; // Target Protocol Addr Length
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UCHAR Variable[1]; // Start of the variable part
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} AA_ARP_PKT_HEADER;
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typedef AA_ARP_PKT_HEADER UNALIGNED *PAA_ARP_PKT_HEADER;
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#define AA_PKT_LLC_SNAP_HEADER_LENGTH (sizeof(AA_PKT_LLC_SNAP_HEADER))
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#define AA_ARP_PKT_HEADER_LENGTH (sizeof(AA_ARP_PKT_HEADER)-1)
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#include <poppack.h>
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//
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// Values for fields in an ARP packet header
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//
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#define AA_PKT_HRD ((USHORT)0x0013)
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#define AA_PKT_PRO ((USHORT)0x0800)
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#define AA_PKT_OP_TYPE_ARP_REQUEST ((USHORT)1)
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#define AA_PKT_OP_TYPE_ARP_REPLY ((USHORT)2)
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#define AA_PKT_OP_TYPE_INARP_REQUEST ((USHORT)8)
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#define AA_PKT_OP_TYPE_INARP_REPLY ((USHORT)9)
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#define AA_PKT_OP_TYPE_ARP_NAK ((USHORT)10)
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#define AA_PKT_ATM_ADDRESS_NSAP ((UCHAR)0x00)
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#define AA_PKT_ATM_ADDRESS_E164 ((UCHAR)0x40)
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#define AA_PKT_ATM_ADDRESS_BIT ((UCHAR)0x40)
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//
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// Internal representation of the contents of an
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// ARP packet:
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//
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typedef struct _AA_ARP_PKT_CONTENTS
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{
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UCHAR SrcAtmNumberTypeLen;
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UCHAR SrcAtmSubaddrTypeLen;
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UCHAR DstAtmNumberTypeLen;
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UCHAR DstAtmSubaddrTypeLen;
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UCHAR UNALIGNED * pSrcAtmNumber;
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UCHAR UNALIGNED * pSrcAtmSubaddress;
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UCHAR UNALIGNED * pDstAtmNumber;
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UCHAR UNALIGNED * pDstAtmSubaddress;
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UCHAR UNALIGNED * pSrcIPAddress;
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UCHAR UNALIGNED * pDstIPAddress;
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} AA_ARP_PKT_CONTENTS, *PAA_ARP_PKT_CONTENTS;
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/*++
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BOOLEAN
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AA_PKT_LLC_SNAP_HEADER_OK(
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IN PAA_PKT_LLC_SNAP_HEADER pPktHeader
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)
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Check if a received LLC/SNAP header is valid.
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--*/
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#define AA_PKT_LLC_SNAP_HEADER_OK(pH) \
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(((pH)->LLC[0] == LLC_SNAP_LLC0) && \
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((pH)->LLC[1] == LLC_SNAP_LLC1) && \
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((pH)->LLC[2] == LLC_SNAP_LLC2) && \
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((pH)->OUI[0] == LLC_SNAP_OUI0) && \
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((pH)->OUI[1] == LLC_SNAP_OUI1) && \
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((pH)->OUI[2] == LLC_SNAP_OUI2))
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/*++
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UCHAR
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AA_PKT_ATM_ADDRESS_TO_TYPE_LEN(
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IN PATM_ADDRESS pAtmAddress
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)
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Return a one-byte Type+Length field corresponding to an ATM Address
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--*/
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#define AA_PKT_ATM_ADDRESS_TO_TYPE_LEN(pAtmAddress) \
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((UCHAR)((pAtmAddress)->NumberOfDigits) | \
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(((pAtmAddress)->AddressType == ATM_E164) ? \
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AA_PKT_ATM_ADDRESS_E164 : AA_PKT_ATM_ADDRESS_NSAP))
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/*++
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VOID
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AA_PKT_TYPE_LEN_TO_ATM_ADDRESS(
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IN UCHAR TypeLen,
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IN ATM_ADDRESSTYPE * pAtmAddressType,
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IN ULONG * pAtmAddressLength
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)
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Convert a Type+Length field in an ATMARP packet to Type, Length
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values in an ATM_ADDRESS structure
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--*/
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#define AA_PKT_TYPE_LEN_TO_ATM_ADDRESS(TypeLen, pAtmType, pAtmLen) \
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{ \
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*(pAtmType) = \
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((((TypeLen) & AA_PKT_ATM_ADDRESS_BIT) == \
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AA_PKT_ATM_ADDRESS_E164)? ATM_E164: ATM_NSAP); \
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*(pAtmLen) = \
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(ULONG)((TypeLen) & ~AA_PKT_ATM_ADDRESS_BIT); \
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}
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//
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// ATM Address ESI length, and offset from the beginning.
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//
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#define AA_ATM_ESI_LEN 6
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#define AA_ATM_ESI_OFFSET 13
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//
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// DHCP constants
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//
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#define AA_DEST_DHCP_PORT_OFFSET 2
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#define AA_DHCP_SERVER_PORT 0x4300
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#define AA_DHCP_CLIENT_PORT 0x4400
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#define AA_DHCP_MIN_LENGTH 44
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#define AA_DHCP_ESI_OFFSET 28
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#endif // _ARP_PKT__H
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