505 lines
14 KiB
C
505 lines
14 KiB
C
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/*++
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Copyright (c) 1996 Microsoft Corporation
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Module Name:
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marspkt.h
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Abstract:
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Definitions for MARS packets.
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Revision History:
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Who When What
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-------- -------- ----------------------------------------------
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arvindm 12-12-96 Created
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Notes:
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--*/
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#ifndef _MARS_PKT__H
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#define _MARS_PKT__H
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#include "arppkt.h"
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#include <pshpack1.h>
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//
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// LLC and OUI values for all (control and data) Multicast packets.
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//
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#define MC_LLC_SNAP_LLC0 ((UCHAR)0xAA)
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#define MC_LLC_SNAP_LLC1 ((UCHAR)0xAA)
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#define MC_LLC_SNAP_LLC2 ((UCHAR)0x03)
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#define MC_LLC_SNAP_OUI0 ((UCHAR)0x00)
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#define MC_LLC_SNAP_OUI1 ((UCHAR)0x00)
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#define MC_LLC_SNAP_OUI2 ((UCHAR)0x5E)
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//
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// "EtherType" (i.e. PID) values for MARS control and multicast data
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//
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#define AA_PKT_ETHERTYPE_MARS_CONTROL ((USHORT)0x003)
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#define AA_PKT_ETHERTYPE_MARS_CONTROL_NS ((USHORT)0x0300)
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#define AA_PKT_ETHERTYPE_MC_TYPE1 ((USHORT)0x001) // Type #1 data
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#define AA_PKT_ETHERTYPE_MC_TYPE1_NS ((USHORT)0x0100) // Type #1 data (Net format)
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#define AA_PKT_ETHERTYPE_MC_TYPE2 ((USHORT)0x004) // Type #2 data
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//
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// Address Family value for MARS control packets.
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//
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#define AA_MC_MARS_HEADER_AFN ((USHORT)0x000F)
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#define AA_MC_MARS_HEADER_AFN_NS ((USHORT)0x0F00)
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//
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// Common preamble for all packets: control, type #1 data and type #2 data.
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// This is the same as for ATMARP packets. The OUI bytes dictate whether
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// a packet is destined to a Unicast IP/ATM entity or to the Multicast IP/ATM
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// entity.
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//
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typedef AA_PKT_LLC_SNAP_HEADER AA_MC_MARS_PKT_HEADER;
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typedef AA_MC_MARS_PKT_HEADER UNALIGNED *PAA_MC_MARS_PKT_HEADER;
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//
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// Short form encapsulation for Type #1 Multicast data packets.
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//
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typedef struct _AA_MC_PKT_TYPE1_SHORT_HEADER
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{
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UCHAR LLC[3];
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UCHAR OUI[3];
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USHORT PID; // 0x001
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USHORT cmi; // Cluster Member ID
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USHORT pro; // Protocol type
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} AA_MC_PKT_TYPE1_SHORT_HEADER;
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typedef AA_MC_PKT_TYPE1_SHORT_HEADER UNALIGNED *PAA_MC_PKT_TYPE1_SHORT_HEADER;
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//
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// Long form encapsulation for Type #1 Multicast data packets.
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//
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typedef struct _AA_MC_PKT_TYPE1_LONG_HEADER
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{
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UCHAR LLC[3];
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UCHAR OUI[3];
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USHORT PID; // 0x001
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USHORT cmi; // Cluster Member ID
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USHORT pro; // Protocol type
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UCHAR snap[5];
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UCHAR padding[3];
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} AA_MC_PKT_TYPE1_LONG_HEADER;
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typedef AA_MC_PKT_TYPE1_LONG_HEADER UNALIGNED *PAA_MC_PKT_TYPE1_LONG_HEADER;
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//
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// Short form encapsulation for Type #2 Multicast data packets.
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//
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typedef struct _AA_MC_PKT_TYPE2_SHORT_HEADER
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{
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UCHAR LLC[3];
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UCHAR OUI[3];
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USHORT PID; // 0x004
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UCHAR sourceID[8]; // Ignored
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USHORT pro; // Protocol type
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UCHAR padding[2];
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} AA_MC_PKT_TYPE2_SHORT_HEADER;
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typedef AA_MC_PKT_TYPE2_SHORT_HEADER UNALIGNED *PAA_MC_PKT_TYPE2_SHORT_HEADER;
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//
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// Long form encapsulation for Type #2 Multicast data packets.
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//
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typedef struct _AA_MC_PKT_TYPE2_LONG_HEADER
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{
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UCHAR LLC[3];
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UCHAR OUI[3];
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USHORT PID; // 0x004
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UCHAR sourceID[8]; // Ignored
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USHORT pro; // Protocol type
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UCHAR snap[5];
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UCHAR padding[1];
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} AA_MC_PKT_TYPE2_LONG_HEADER;
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typedef AA_MC_PKT_TYPE2_LONG_HEADER UNALIGNED *PAA_MC_PKT_TYPE2_LONG_HEADER;
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//
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// The Fixed header part of every MARS control packet.
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//
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typedef struct _AA_MARS_PKT_FIXED_HEADER
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{
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UCHAR LLC[3];
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UCHAR OUI[3];
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USHORT PID; // 0x003
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USHORT afn; // Address Family (0x000F)
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UCHAR pro[7]; // Protocol Identification
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UCHAR hdrrsv[3]; // Reserved.
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USHORT chksum; // Checksum across entire MARS message
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USHORT extoff; // Extensions offset
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USHORT op; // Operation code
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UCHAR shtl; // Type & Length of source ATM number
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UCHAR sstl; // Type & Length of source ATM subaddress
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} AA_MARS_PKT_FIXED_HEADER;
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typedef AA_MARS_PKT_FIXED_HEADER UNALIGNED *PAA_MARS_PKT_FIXED_HEADER;
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//
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// MARS control packet types
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//
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#define AA_MARS_OP_TYPE_REQUEST ((USHORT)1)
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#define AA_MARS_OP_TYPE_MULTI ((USHORT)2)
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#define AA_MARS_OP_TYPE_JOIN ((USHORT)4)
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#define AA_MARS_OP_TYPE_LEAVE ((USHORT)5)
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#define AA_MARS_OP_TYPE_NAK ((USHORT)6)
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#define AA_MARS_OP_TYPE_GROUPLIST_REQUEST ((USHORT)10)
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#define AA_MARS_OP_TYPE_GROUPLIST_REPLY ((USHORT)11)
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#define AA_MARS_OP_TYPE_REDIRECT_MAP ((USHORT)12)
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#define AA_MARS_OP_TYPE_MIGRATE ((USHORT)13)
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//
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// Format of MARS JOIN and LEAVE message headers.
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//
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typedef struct _AA_MARS_JOIN_LEAVE_HEADER
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{
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UCHAR LLC[3];
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UCHAR OUI[3];
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USHORT PID; // 0x003
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USHORT afn; // Address Family (0x000F)
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UCHAR pro[7]; // Protocol Identification
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UCHAR hdrrsv[3]; // Reserved.
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USHORT chksum; // Checksum across entire MARS message
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USHORT extoff; // Extensions offset
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USHORT op; // Operation code (JOIN/LEAVE)
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UCHAR shtl; // Type & Length of source ATM number
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UCHAR sstl; // Type & Length of source ATM subaddress
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UCHAR spln; // Source protocol address length
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UCHAR tpln; // Length of group address
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USHORT pnum; // Number of group address pairs
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USHORT flags; // LAYER3GRP, COPY and REGISTER bits
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USHORT cmi; // Cluster Member ID
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ULONG msn; // MARS Sequence Number
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} AA_MARS_JOIN_LEAVE_HEADER;
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typedef AA_MARS_JOIN_LEAVE_HEADER UNALIGNED *PAA_MARS_JOIN_LEAVE_HEADER;
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//
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// Bit definitions for flags in JOIN/LEAVE messages
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//
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#define AA_MARS_JL_FLAG_LAYER3_GROUP NET_SHORT((USHORT)0x8000)
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#define AA_MARS_JL_FLAG_COPY NET_SHORT((USHORT)0x4000)
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#define AA_MARS_JL_FLAG_REGISTER NET_SHORT((USHORT)0x2000)
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#define AA_MARS_JL_FLAG_PUNCHED NET_SHORT((USHORT)0x1000)
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#define AA_MARS_JL_FLAG_SEQUENCE_MASK NET_SHORT((USHORT)0x00ff)
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//
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// Format of MARS REQUEST and MARS NAK message header.
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//
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typedef struct _AA_MARS_REQ_NAK_HEADER
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{
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UCHAR LLC[3];
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UCHAR OUI[3];
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USHORT PID; // 0x003
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USHORT afn; // Address Family (0x000F)
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UCHAR pro[7]; // Protocol Identification
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UCHAR hdrrsv[3]; // Reserved.
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USHORT chksum; // Checksum across entire MARS message
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USHORT extoff; // Extensions offset
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USHORT op; // Operation code (REQUEST/NAK)
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UCHAR shtl; // Type & Length of source ATM number
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UCHAR sstl; // Type & Length of source ATM subaddress
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UCHAR spln; // Source protocol address length
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UCHAR thtl; // Type & Length of target ATM number
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UCHAR tstl; // Type & Length of target ATM subaddress
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UCHAR tpln; // Length of target group address
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UCHAR pad[8];
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} AA_MARS_REQ_NAK_HEADER;
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typedef AA_MARS_REQ_NAK_HEADER UNALIGNED *PAA_MARS_REQ_NAK_HEADER;
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//
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// Format of MARS MULTI message header.
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//
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typedef struct _AA_MARS_MULTI_HEADER
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{
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UCHAR LLC[3];
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UCHAR OUI[3];
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USHORT PID; // 0x003
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USHORT afn; // Address Family (0x000F)
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UCHAR pro[7]; // Protocol Identification
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UCHAR hdrrsv[3]; // Reserved.
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USHORT chksum; // Checksum across entire MARS message
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USHORT extoff; // Extensions offset
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USHORT op; // Operation code (MULTI)
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UCHAR shtl; // Type & Length of source ATM number
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UCHAR sstl; // Type & Length of source ATM subaddress
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UCHAR spln; // Source protocol address length
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UCHAR thtl; // Type & Length of target ATM number
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UCHAR tstl; // Type & Length of target ATM subaddress
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UCHAR tpln; // Length of target group address
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USHORT tnum; // Number of target ATM addresses returned
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USHORT seqxy; // Boolean X and sequence number Y
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ULONG msn; // MARS Sequence Number
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} AA_MARS_MULTI_HEADER;
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typedef AA_MARS_MULTI_HEADER UNALIGNED *PAA_MARS_MULTI_HEADER;
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//
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// Format of MARS MIGRATE message header.
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//
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typedef struct _AA_MARS_MIGRATE_HEADER
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{
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UCHAR LLC[3];
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UCHAR OUI[3];
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USHORT PID; // 0x003
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USHORT afn; // Address Family (0x000F)
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UCHAR pro[7]; // Protocol Identification
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UCHAR hdrrsv[3]; // Reserved.
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USHORT chksum; // Checksum across entire MARS message
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USHORT extoff; // Extensions offset
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USHORT op; // Operation code (MIGRATE)
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UCHAR shtl; // Type & Length of source ATM number
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UCHAR sstl; // Type & Length of source ATM subaddress
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UCHAR spln; // Source protocol address length
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UCHAR thtl; // Type & Length of target ATM number
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UCHAR tstl; // Type & Length of target ATM subaddress
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UCHAR tpln; // Length of target group address
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USHORT tnum; // Number of Target ATM addresses returned
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USHORT resv; // Reserved
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ULONG msn; // MARS Sequence Number
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} AA_MARS_MIGRATE_HEADER;
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typedef AA_MARS_MIGRATE_HEADER UNALIGNED *PAA_MARS_MIGRATE_HEADER;
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//
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// Format of MARS REDIRECT MAP message header.
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//
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typedef struct _AA_MARS_REDIRECT_MAP_HEADER
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{
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UCHAR LLC[3];
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UCHAR OUI[3];
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USHORT PID; // 0x003
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USHORT afn; // Address Family (0x000F)
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UCHAR pro[7]; // Protocol Identification
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UCHAR hdrrsv[3]; // Reserved.
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USHORT chksum; // Checksum across entire MARS message
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USHORT extoff; // Extensions offset
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USHORT op; // Operation code (REDIRECT MAP)
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UCHAR shtl; // Type & Length of source ATM number
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UCHAR sstl; // Type & Length of source ATM subaddress
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UCHAR spln; // Source protocol address length
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UCHAR thtl; // Type & Length of target ATM number
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UCHAR tstl; // Type & Length of target ATM subaddress
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UCHAR redirf; // Flag controlling redirect behaviour
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USHORT tnum; // Number of MARS addresses returned
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USHORT seqxy; // Boolean flag x and seq number y
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ULONG msn; // MARS Sequence Number
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} AA_MARS_REDIRECT_MAP_HEADER;
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typedef AA_MARS_REDIRECT_MAP_HEADER UNALIGNED *PAA_MARS_REDIRECT_MAP_HEADER;
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//
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// Bit assignments for Boolean flag X and sequence number Y in
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// "seqxy" fields in MARS messages.
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//
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#define AA_MARS_X_MASK ((USHORT)0x8000)
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#define AA_MARS_Y_MASK ((USHORT)0x7fff)
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//
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// Initial value for sequence number Y
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//
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#define AA_MARS_INITIAL_Y ((USHORT)1)
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//
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// Structure of a MARS packet extension element (TLV = Type, Length, Value)
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//
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typedef struct _AA_MARS_TLV_HDR
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{
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USHORT Type;
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USHORT Length; // Number of significant octets in Value
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} AA_MARS_TLV_HDR;
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typedef AA_MARS_TLV_HDR UNALIGNED *PAA_MARS_TLV_HDR;
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//
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// Our experimental TLV that we use in MARS MULTI messages to
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// indicate that the returned target address is that of an MCS.
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//
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typedef struct _AA_MARS_TLV_MULTI_IS_MCS
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{
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AA_MARS_TLV_HDR;
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} AA_MARS_TLV_MULTI_IS_MCS;
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typedef AA_MARS_TLV_MULTI_IS_MCS UNALIGNED *PAA_MARS_TLV_MULTI_IS_MCS;
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#define AAMC_TLVT_MULTI_IS_MCS ((USHORT)0x3a00)
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|
|
|
||
|
|
//
|
||
|
|
// Type of a NULL TLV
|
||
|
|
//
|
||
|
|
#define AAMC_TLVT_NULL ((USHORT)0x0000)
|
||
|
|
|
||
|
|
//
|
||
|
|
// Bit definitions for the Type field in a MARS TLV.
|
||
|
|
//
|
||
|
|
//
|
||
|
|
// The Least significant 14 bits indicate the actual type.
|
||
|
|
//
|
||
|
|
#define AA_MARS_TLV_TYPE_MASK ((USHORT)0x3fff)
|
||
|
|
|
||
|
|
//
|
||
|
|
// The most significant 2 bits define the action to be taken
|
||
|
|
// when we receive a TLV type that we don't recognize.
|
||
|
|
//
|
||
|
|
#define AA_MARS_TLV_ACTION_MASK ((USHORT)0xc000)
|
||
|
|
#define AA_MARS_TLV_TA_SKIP ((USHORT)0x0000)
|
||
|
|
#define AA_MARS_TLV_TA_STOP_SILENT ((USHORT)0x1000)
|
||
|
|
#define AA_MARS_TLV_TA_STOP_LOG ((USHORT)0x2000)
|
||
|
|
#define AA_MARS_TLV_TA_RESERVED ((USHORT)0x3000)
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
#include <poppack.h>
|
||
|
|
|
||
|
|
|
||
|
|
//
|
||
|
|
// TLV List, internal representation. This stores information about
|
||
|
|
// all TLVs sent/received in a packet. For each TLV, there is a
|
||
|
|
// BOOLEAN that says whether it is present or not.
|
||
|
|
//
|
||
|
|
typedef struct _AA_MARS_TLV_LIST
|
||
|
|
{
|
||
|
|
//
|
||
|
|
// MULTI_IS_MCS TLV:
|
||
|
|
//
|
||
|
|
BOOLEAN MultiIsMCSPresent;
|
||
|
|
BOOLEAN MultiIsMCSValue;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Add other TLVs...
|
||
|
|
//
|
||
|
|
|
||
|
|
} AA_MARS_TLV_LIST, *PAA_MARS_TLV_LIST;
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/*++
|
||
|
|
BOOLEAN
|
||
|
|
AAMC_PKT_IS_TYPE1_DATA(
|
||
|
|
IN PAA_MC_PKT_TYPE1_SHORT_HEADER pH
|
||
|
|
)
|
||
|
|
--*/
|
||
|
|
#define AAMC_PKT_IS_TYPE1_DATA(pH) \
|
||
|
|
(((pH)->LLC[0] == MC_LLC_SNAP_LLC0) && \
|
||
|
|
((pH)->LLC[1] == MC_LLC_SNAP_LLC1) && \
|
||
|
|
((pH)->LLC[2] == MC_LLC_SNAP_LLC2) && \
|
||
|
|
((pH)->OUI[0] == MC_LLC_SNAP_OUI0) && \
|
||
|
|
((pH)->OUI[1] == MC_LLC_SNAP_OUI1) && \
|
||
|
|
((pH)->OUI[2] == MC_LLC_SNAP_OUI2) && \
|
||
|
|
((pH)->PID == NET_SHORT(AA_PKT_ETHERTYPE_MC_TYPE1)) && \
|
||
|
|
((pH)->pro == NET_SHORT(AA_PKT_ETHERTYPE_IP)))
|
||
|
|
|
||
|
|
/*++
|
||
|
|
BOOLEAN
|
||
|
|
AAMC_PKT_IS_TYPE2_DATA(
|
||
|
|
IN PAA_MC_PKT_TYPE2_SHORT_HEADER pH
|
||
|
|
)
|
||
|
|
--*/
|
||
|
|
#define AAMC_PKT_IS_TYPE2_DATA(pH) \
|
||
|
|
(((pH)->LLC[0] == MC_LLC_SNAP_LLC0) && \
|
||
|
|
((pH)->LLC[1] == MC_LLC_SNAP_LLC1) && \
|
||
|
|
((pH)->LLC[2] == MC_LLC_SNAP_LLC2) && \
|
||
|
|
((pH)->OUI[0] == MC_LLC_SNAP_OUI0) && \
|
||
|
|
((pH)->OUI[1] == MC_LLC_SNAP_OUI1) && \
|
||
|
|
((pH)->OUI[2] == MC_LLC_SNAP_OUI2) && \
|
||
|
|
((pH)->PID == NET_SHORT(AA_PKT_ETHERTYPE_MC_TYPE2)) && \
|
||
|
|
((pH)->pro == NET_SHORT(AA_PKT_ETHERTYPE_IP)))
|
||
|
|
|
||
|
|
|
||
|
|
/*++
|
||
|
|
BOOLEAN
|
||
|
|
AAMC_PKT_IS_CONTROL(
|
||
|
|
IN PAA_MARS_PKT_FIXED_HEADER pH
|
||
|
|
)
|
||
|
|
--*/
|
||
|
|
#define AAMC_PKT_IS_CONTROL(pH) \
|
||
|
|
(((pH)->LLC[0] == MC_LLC_SNAP_LLC0) && \
|
||
|
|
((pH)->LLC[1] == MC_LLC_SNAP_LLC1) && \
|
||
|
|
((pH)->LLC[2] == MC_LLC_SNAP_LLC2) && \
|
||
|
|
((pH)->OUI[0] == MC_LLC_SNAP_OUI0) && \
|
||
|
|
((pH)->OUI[1] == MC_LLC_SNAP_OUI1) && \
|
||
|
|
((pH)->OUI[2] == MC_LLC_SNAP_OUI2) && \
|
||
|
|
((pH)->PID == NET_SHORT(AA_PKT_ETHERTYPE_MARS_CONTROL)))
|
||
|
|
|
||
|
|
|
||
|
|
/*++
|
||
|
|
USHORT
|
||
|
|
AAMC_GET_TLV_TYPE(
|
||
|
|
IN USHORT _Type
|
||
|
|
)
|
||
|
|
--*/
|
||
|
|
#define AAMC_GET_TLV_TYPE(_Type) NET_TO_HOST_SHORT((_Type) & AA_MARS_TLV_TYPE_MASK)
|
||
|
|
|
||
|
|
|
||
|
|
/*++
|
||
|
|
USHORT
|
||
|
|
AAMC_GET_TLV_ACTION(
|
||
|
|
IN USHORT _Type
|
||
|
|
)
|
||
|
|
--*/
|
||
|
|
#define AAMC_GET_TLV_ACTION(_Type) NET_TO_HOST_SHORT((_Type) & AA_MARS_TLV_ACTION_MASK)
|
||
|
|
|
||
|
|
|
||
|
|
/*++
|
||
|
|
SHORT
|
||
|
|
AAMC_GET_TLV_TOTAL_LENGTH(
|
||
|
|
IN SHORT _TlvLength
|
||
|
|
)
|
||
|
|
Given the value stored in the Length field of a TLV, return
|
||
|
|
the total (rounded-off) length of the TLV. This is just the
|
||
|
|
length of the TLV header plus the given length rounded off
|
||
|
|
to the nearest multiple of 4.
|
||
|
|
--*/
|
||
|
|
#define AAMC_GET_TLV_TOTAL_LENGTH(_TlvLength) \
|
||
|
|
(sizeof(AA_MARS_TLV_HDR) + \
|
||
|
|
(_TlvLength) + \
|
||
|
|
((4 - ((_TlvLength) & 3)) % 4))
|
||
|
|
|
||
|
|
|
||
|
|
/*++
|
||
|
|
BOOLEAN
|
||
|
|
AAMC_IS_NULL_TLV(
|
||
|
|
IN PAA_MARS_TLV_HDR _pTlv
|
||
|
|
)
|
||
|
|
Return TRUE iff the given TLV is a NULL TLV, meaning end of list.
|
||
|
|
--*/
|
||
|
|
#define AAMC_IS_NULL_TLV(_pTlv) \
|
||
|
|
(((_pTlv)->Type == 0x0000) && ((_pTlv)->Length == 0x0000))
|
||
|
|
|
||
|
|
#endif _MARS_PKT__H
|