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Sprite 1984 - 1993
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Sprite 1984 - 1993.iso
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src
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machserver
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1.098
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include
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netInet.h
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1989-06-23
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/*
* netInet.h --
*
* Declarations of data structures and constants for the DARPA Internet
* protocol suite.
*
* Copyright 1987, 1988 Regents of the University of California
* Permission to use, copy, modify, and distribute this
* software and its documentation for any purpose and without
* fee is hereby granted, provided that the above copyright
* notice appear in all copies. The University of California
* makes no representations about the suitability of this
* software for any purpose. It is provided "as is" without
* express or implied warranty.
*
* $Header: /sprite/src/lib/include/RCS/netInet.h,v 1.6 89/06/23 11:30:13 rab Exp $ SPRITE (Berkeley)
*/
#ifndef _NETINET
#define _NETINET
#include "machparam.h"
#include "netEther.h"
/*
* Definition of the 32-bit Internet Address.
*/
typedef unsigned int Net_InetAddress;
/*
* Structure of the Ethernet Address Resolution Protocol and Reverse ARP
* packets, according to RFC826 (ARP) and RFC903 (RARP).
*/
typedef struct {
unsigned short hardwareType; /* "Hardware address space (e.g.
* Ethernet, Packet Radio Net.)"
*/
unsigned short protocolType; /* "Protocol Address Space"
* specifies format of protocol
* addresses. Value is one
* of the defined packet types
* in netEther.h. */
unsigned char hardwareAddrLen; /* length in bytes of hardware
* addresses. */
unsigned char protocolAddrLen; /* length in bytes of protocol
* addresses. */
unsigned short opcode; /* see below. */
} Net_ArpHeader;
typedef struct {
Net_EtherHdr header; /* packet header */
unsigned short hardwareType; /* "Hardware address space (e.g.
* Ethernet, Packet Radio Net.)"
*/
unsigned short protocolType; /* "Protocol Address Space"
* specifies format of protocol
* addresses. Value is one
* of the defined packet types
* in netEther.h. */
unsigned char hardwareAddrLen; /* length in bytes of hardware
* addresses. */
unsigned char protocolAddrLen; /* length in bytes of protocol
* addresses. */
unsigned short opcode; /* see below. */
Net_EtherAddress senderEtherAddr; /* hardware address of sender
* of the packet. */
Net_InetAddress senderProtAddr; /* protocol address of sender
* of the packet. */
Net_EtherAddress targetEtherAddr; /* hardware address of target
* (if known). */
Net_InetAddress targetProtAddr; /* protocol address of target.*/
} Net_ArpPacket;
/*
* Value for the hardwareType field in Net_ArpPacket.
* NET_ARP_TYPE_ETHER using ethernet hardware.
*/
#define NET_ARP_TYPE_ETHER 1
/*
* Values for the opcode field in Net_ArpPacket:
* NET_ARP_REQUEST request ethernet address for a given IP address.
* NET_ARP_REPLY answer for above request.
* NET_RARP_REQUEST request IP address for a given ethernet address.
* NET_RARP_REPLY answer for above request.
*/
#define NET_ARP_REQUEST 1
#define NET_ARP_REPLY 2
#define NET_RARP_REQUEST 3
#define NET_RARP_REPLY 4
#define NET_INET_BROADCAST_ADDR ((Net_InetAddress) 0xFFFFFFFF)
#define NET_INET_ANY_ADDR ((Net_InetAddress) 0)
#define NET_INET_CLASS_A_ADDR(addr) \
(((unsigned int)(addr) & 0x80000000) == 0)
#define NET_INET_CLASS_A_HOST_MASK 0x00FFFFFF
#define NET_INET_CLASS_A_NET_MASK 0xFF000000
#define NET_INET_CLASS_A_SHIFT 24
#define NET_INET_CLASS_B_ADDR(addr) \
(((unsigned int)(addr) & 0xC0000000) == 0x80000000)
#define NET_INET_CLASS_B_HOST_MASK 0x0000FFFF
#define NET_INET_CLASS_B_NET_MASK 0xFFFF0000
#define NET_INET_CLASS_B_SHIFT 16
#define NET_INET_CLASS_C_ADDR(addr) \
(((unsigned int)(addr) & 0xE0000000) == 0xC0000000)
#define NET_INET_CLASS_C_HOST_MASK 0x000000FF
#define NET_INET_CLASS_C_NET_MASK 0xFFFFFF00
#define NET_INET_CLASS_C_SHIFT 8
/*
* Class D: multicast addressing (see RFC988, RFC966).
*/
#define NET_INET_CLASS_D_ADDR(addr) \
(((unsigned int)(addr) & 0xF0000000) == 0xE0000000)
#define NET_INET_CLASS_D_NET_MASK 0x0FFFFFFF
/*
* Class E: reserved.
*/
#define NET_INET_CLASS_E_ADDR(addr) \
(((unsigned int)(addr) & 0xF0000000) == 0xF0000000)
/*
* Synonym address for the local host.
*/
#define NET_INET_LOCAL_HOST 0x7F000001
/*
* Structure of an Internet packet header, according to RFC791.
*/
typedef struct {
#if BYTE_ORDER == LITTLE_ENDIAN
unsigned int headerLen:4, /* Length of header in 32-bit words. */
version:4; /* Version. Defined below. */
#else
unsigned int version:4,
headerLen:4;
#endif
unsigned char typeOfService; /* See below. */
unsigned short totalLen; /* Length in bytes of the
* datagram including header and data.*/
unsigned short ident; /* Used for fragmentation reassembly. */
#if BYTE_ORDER == LITTLE_ENDIAN
unsigned int fragOffset:13, /* Offset from beginning of unfragmented
* packet. */
flags:3; /* Fragment flags. See below. */
#else
unsigned int flags:3,
fragOffset:13;
#endif
unsigned char timeToLive; /* Max. time the packet is allowed to
* be in the internet system. When TTL
* goes to 0, the packet is destroyed.*/
unsigned char protocol; /* Protocol used in the data portion.
* Defined below. */
unsigned short checksum; /* Checksum of the header. */
Net_InetAddress source; /* Source of the packet. */
Net_InetAddress dest; /* Destination of the packet. */
/*
* Options may follow at this point, before the data.
*/
} Net_IPHeader;
/*
* IP Pseudo Header is used by UDP and TCP checksums to make sure
* the packet is not mis-routed.
*/
typedef struct {
Net_InetAddress source; /* Source of the packet. */
Net_InetAddress dest; /* Destination of the packet. */
unsigned char zero; /* must be zero. */
unsigned char protocol; /* Protocol # (UDP, TCP). */
unsigned short len; /* # of bytes in header and data. */
} Net_IPPseudoHdr;
#define NET_IP_VERSION 4
#define NET_IP_MAX_HDR_SIZE 60
/*
* IP implementation parameters:
* NET_IP_MAX_TTL - Max. value for timeToLive field (in seconds).
* NET_IP_MAX_FRAG_TTL - Max. time-to-live for fragments.
* NET_IP_TTL_DECR - The value ttl is decremented by when a
* packet is forwarded.
* NET_IP_MAX_SEG_SIZE - Max. segment size.
* NET_IP_MAX_PACKET_SIZE - Largest packet size.
*/
#define NET_IP_MAX_TTL 255
#define NET_IP_MAX_FRAG_TTL 15
#define NET_IP_TTL_DECR 1
#define NET_IP_MAX_SEG_SIZE 576
#define NET_IP_MAX_PACKET_SIZE 65535
/*
* Definitions of the typeOfService flags in the Internet header.
* According to p. 12 of RFC791, the type of service field has the
* the following subfields:
* precedence: bits 0-2 (most sig. bits)
* delay bit 3
* thruput bit 4
* reliability bit 5
* reserved bit 6-7 (least sig. bits)
* The value must be composed of the OR of one flag from each of the following
* groups:
*/
#define NET_IP_SERV_PREC_NET_CTL 0xE0
#define NET_IP_SERV_PREC_INET_CTL 0xC0
#define NET_IP_SERV_PREC_CRITIC 0xA0
#define NET_IP_SERV_PREC_FLASH_OVR 0x80
#define NET_IP_SERV_PREC_FLASH 0x60
#define NET_IP_SERV_PREC_IMMED 0x40
#define NET_IP_SERV_PREC_PRIORITY 0x20
#define NET_IP_SERV_PREC_ROUTINE 0x00
#define NET_IP_SERV_NORM_DELAY 0x00
#define NET_IP_SERV_LOW_DELAY 0x10
#define NET_IP_SERV_NORM_THRUPUT 0x00
#define NET_IP_SERV_HIGH_THRUPUT 0x08
#define NET_IP_SERV_NORM_RELIABL 0x00
#define NET_IP_SERV_HIGH_RELIABL 0x04
/*
* Values for the flags field in the IP header.
* NET_IP_LAST_FRAG last fragment of the bunch. implies the
* packet can be fragmented if necessary.
* NET_IP_MORE_FRAGS expect more fragments.
* NET_IP_DONT_FRAG the can't be fragmented so discard if can't
* transmit.
*
* The high-order bit of the field must be 0.
*/
#define NET_IP_LAST_FRAG 0x0
#define NET_IP_MORE_FRAGS 0x1
#define NET_IP_DONT_FRAG 0x2
/*
* Values for the protocol field in the IP packet header from RFC990.
* The RFC does not assign a number for IP, so we use 0 (even though
* it is reserved).
*/
#define NET_IP_PROTOCOL_IP 0
#define NET_IP_PROTOCOL_ICMP 1
#define NET_IP_PROTOCOL_TCP 6
#define NET_IP_PROTOCOL_EGP 8
#define NET_IP_PROTOCOL_UDP 17
#define NET_IP_PROTOCOL_SPRITE 90
/*
* Definitions of IP options.
* There are two formats for the options:
* 1) single octet of option-type.
* 2) an option-type octet, an option length, and the actual data octets.
*
* The option type is composed of 3 fields: copied flag (1 bit),
* option class (2 bits), and an option number (5 bits).
*/
/*
* Definitions of offsets within an option for the type, length and next-
* option-offset octets. The minimum value for the next-option offset
* ("pointer") is 4. The pointer is used in the 3 routing options and
* the timestamp option.
*/
#define NET_IP_OPT_TYPE_OFFSET 0
#define NET_IP_OPT_LEN_OFFSET 1
#define NET_IP_OPT_PTR_OFFSET 2
#define NET_IP_OPT_MIN_PTR 4
#define NET_IP_OPT_MAX_LEN 40
/*
* Macros to access the option-type fields.
* NET_IP_OPT_COPIED - 0 means not copied, 1 means copied.
* NET_IP_OPT_CLASS - see below.
* NET_IP_OPT_NUMBER - see below.
*/
#define NET_IP_OPT_COPIED(opt) ((opt) & 0x80)
#define NET_IP_OPT_CLASS(opt) ((opt) & 0x60)
#define NET_IP_OPT_NUMBER(opt) ((opt) & 0x1f)
/*
* Values for NET_IP_OPT_CLASS as masks.
*/
#define NET_IP_OPT_CLASS_CONTROL 0x00
#define NET_IP_OPT_CLASS_RESERVED1 0x20
#define NET_IP_OPT_CLASS_DEBUG 0x40
#define NET_IP_OPT_CLASS_RESERVED2 0x60
/*
* Complete values for the option types, including the copied and class fields
* as well as the number field. The definitions are listed in the same
* order as described in RFC791, p. 16ff.
*/
#define NET_IP_OPT_END_OF_LIST 0x00
#define NET_IP_OPT_NOP 0x01
#define NET_IP_OPT_SECURITY 0x82
#define NET_IP_OPT_LOOSE_ROUTE 0x83
#define NET_IP_OPT_STRICT_ROUTE 0x89
#define NET_IP_OPT_REC_ROUTE 0x07
#define NET_IP_OPT_STREAM_ID 0x88
#define NET_IP_OPT_TIMESTAMP 0x44
/*
* Foramt of the timestamp option header.
*/
typedef struct {
unsigned char type;
unsigned char len; /* Total len of option. */
unsigned char pointer; /* Offset into option where
* to add t.s. */
#if BYTE_ORDER == LITTLE_ENDIAN
unsigned int flags:4, /* Defined below. */
overflow:4; /* # of hosts who weren't
* able to add a t.s. */
#else
unsigned int overflow:4,
flags:4;
#endif
} Net_IPTimestampHdr;
/*
* Values of the flags field in Net_IPTimestampHdr.
*/
#define NET_IP_OPT_TS_ONLY 0
#define NET_IP_OPT_TS_AND_ADDR 1
#define NET_IP_OPT_TS_ADDR_SPEC 3
/*
* Interet time value is a "right-justified, 32-bit" time in milliseconds
* since midnight Universal Time (UT).
*/
typedef int Net_InetTime;
/*
* Structure of an TCP packet header, according to RFC793.
*/
typedef struct {
unsigned short srcPort; /* Source port # */
unsigned short destPort; /* Destination port # */
unsigned int seqNum; /* Seq. # of 1st byte in the segment */
unsigned int ackNum; /* Next seq. # we expect */
#if BYTE_ORDER == LITTLE_ENDIAN
unsigned int reserved1:4, /* Must be zero. */
dataOffset:4, /* # of 32-bit words in this header */
flags:6, /* Control flags, define below. */
reserved2:2; /* Must be zero */
#else
unsigned int dataOffset:4,
reserved:6,
flags:6;
#endif
unsigned short window; /* # of bytes we are willing to accept*/
unsigned short checksum; /* Checksum of IP pseudo-header,
* TCP header and data. */
unsigned short urgentOffset; /* Start of urgent data as an offset
* from the seq. # of this segment. */
} Net_TCPHeader;
#define NET_TCP_MAX_HDR_SIZE 60
#define NET_TCP_TTL 30
/*
* TCP header control flags: (p. 16, rfc793)
*
* URG - Urgent Pointer field significant
* ACK - Acknowledgment field significant
* PSH - Push Function
* RST - Reset the connection
* SYN - Synchronize sequence numbers
* FIN - No more data from sender
*/
#define NET_TCP_FIN_FLAG 0x01
#define NET_TCP_SYN_FLAG 0x02
#define NET_TCP_RST_FLAG 0x04
#define NET_TCP_PSH_FLAG 0x08
#define NET_TCP_ACK_FLAG 0x10
#define NET_TCP_URG_FLAG 0x20
/*
* TCP options flags: (p. 16, rfc793)
* EOL - End of option list
* NOP - No-operation
* MAX_SEG_SIZE - Maximum segment size
*/
#define NET_TCP_OPTION_EOL 0x0
#define NET_TCP_OPTION_NOP 0x1
#define NET_TCP_OPTION_MAX_SEG_SIZE 0x2
#define NET_TCP_MAX_SEG_SIZE 512
/*
* Structure of an UDP packet header, according to RFC768.
*/
typedef struct {
unsigned short srcPort; /* Source port. */
unsigned short destPort; /* Destination port. */
unsigned short len; /* # of bytes in header and data. */
unsigned short checksum; /* Checksum of IP pseudo-header,
* UDP header and data. */
} Net_UDPHeader;
#define NET_UDP_TTL 30
/*
* Structure of various ICMP packets, according to RFC792.
* The data structures for ICMP data is broken into 2 parts:
* a 4-byte header that is common to all ICMP packet types and
* a type-dependent data part.
*
* The packets that include the IP header + the first 64 bits of data
* consist of the basic header, plus room for the header options followed
* by space for the data. Enough space to hold the maximum amount of
* header options is reserved; if the size of the options is smaller than
* maximum, the 64 bits of data will be placed immediately after the end
* of the options. Therefore the "char data[8]" field is there to reserve
* space in case of a maximum-sized header is present.
*/
typedef struct {
unsigned char type; /* Type of message, define below. */
unsigned char code; /* Type sub code, define below. */
unsigned short checksum; /* Checksum of ICMP message. */
} Net_ICMPHeader;
/*
* Data for "Destination unreachable", "Time exceeded",
* "Source Quench" messages.
*/
typedef struct {
int unused;
Net_IPHeader ipHeader;
char hdrOptions[NET_IP_MAX_HDR_SIZE - sizeof(Net_IPHeader)];
char data[8];
} Net_ICMPDataMisc;
/*
* Data for "Redirect" message.
*/
typedef struct {
Net_InetAddress gatewayAddr;
Net_IPHeader ipHeader;
char hdrOptions[NET_IP_MAX_HDR_SIZE - sizeof(Net_IPHeader)];
char data[8];
} Net_ICMPDataRedir;
/*
* Data for "Parameter Problem" message.
*/
typedef struct {
unsigned char paramOffset;
char unused1;
short unused2;
Net_IPHeader ipHeader;
char hdrOptions[NET_IP_MAX_HDR_SIZE - sizeof(Net_IPHeader)];
char data[8];
} Net_ICMPDataParam;
/*
* Data for "Information Request", "Information Reply", "Echo" and "Echo Reply"
* messages. The echo messages also have additional data following.
*/
typedef struct {
unsigned short id;
unsigned short seqNum;
} Net_ICMPDataInfoEcho;
/*
* Data for "Address Mask Request" and "Address Mask Reply" messages.
*/
typedef struct {
unsigned short id;
unsigned short seqNum;
unsigned int addrMask;
} Net_ICMPDataMask;
/*
* Data for "Timestamp" and "Timestamp Reply" message.
*/
typedef struct {
unsigned short id;
unsigned short seqNum;
unsigned int origTime;
unsigned int recvTime;
unsigned int transmitTime;
} Net_ICMPDataTime;
/*
* A complete definition of an ICMP packet.
*/
typedef struct {
Net_ICMPHeader header;
union {
Net_ICMPDataMisc overlay; /* used to format packets that
* return the IP header & data*/
Net_ICMPDataMisc unreach; /* NET_ICMP_UNREACHABLE */
Net_ICMPDataMisc timeExceed; /* NET_ICMP_TIME_EXCEED */
Net_ICMPDataMisc quench; /* NET_ICMP_SOURCE_QUENCH */
Net_ICMPDataParam param; /* NET_ICMP_PARAM_PROB */
Net_ICMPDataRedir redirect; /* NET_ICMP_REDIRECT */
Net_ICMPDataTime timeStamp; /* NET_ICMP_TIMESTAMP, _REPLY */
Net_ICMPDataMask mask; /* NET_ICMP_MASK_REQ, _REPLY */
Net_ICMPDataInfoEcho info; /* NET_ICMP_INFO_REQ , _REPLY */
Net_ICMPDataInfoEcho echo; /* NET_ICMP_ECHO, _REPLY */
} data;
} Net_ICMPPacket;
#define NET_ICMP_MIN_LEN 8
/*
* Definition of type and code field values.
*/
#define NET_ICMP_ECHO_REPLY 0 /* Echo reply */
#define NET_ICMP_UNREACHABLE 3 /* Dest unreachable, codes: */
#define NET_ICMP_UNREACH_NET 0 /* - Bad net */
#define NET_ICMP_UNREACH_HOST 1 /* - Bad host */
#define NET_ICMP_UNREACH_PROTOCOL 2 /* - Bad protocol */
#define NET_ICMP_UNREACH_PORT 3 /* - Bad port */
#define NET_ICMP_UNREACH_NEED_FRAG 4 /* - IP_DF caused drop */
#define NET_ICMP_UNREACH_SRC_ROUTE 5 /* - Source route failed */
#define NET_ICMP_SOURCE_QUENCH 4 /* Source quench */
#define NET_ICMP_REDIRECT 5 /* Shorter route, codes: */
#define NET_ICMP_REDIRECT_NET 0 /* - For network */
#define NET_ICMP_REDIRECT_HOST 1 /* - For host */
#define NET_ICMP_REDIRECT_TOS_NET 2 /* - For type of service and
* net. */
#define NET_ICMP_REDIRECT_TOS_HOST 3 /* - For type of service and
* host. */
#define NET_ICMP_ECHO 8 /* Echo service */
#define NET_ICMP_TIME_EXCEED 11 /* Time exceeded, code: */
#define NET_ICMP_TIME_EXCEED_TTL 0 /* - ttl==0 in transit */
#define NET_ICMP_TIME_EXCEED_REASS 1 /* - ttl==0 in reassembly */
#define NET_ICMP_PARAM_PROB 12 /* IP header bad */
#define NET_ICMP_TIMESTAMP 13 /* Timestamp request */
#define NET_ICMP_TIMESTAMP_REPLY 14 /* Timestamp reply */
#define NET_ICMP_INFO_REQ 15 /* Information request */
#define NET_ICMP_INFO_REPLY 16 /* Information reply */
#define NET_ICMP_MASK_REQ 17 /* Address mask request */
#define NET_ICMP_MASK_REPLY 18 /* Address mask reply */
#define NET_ICMP_MAX_TYPE 18
/*
* Definition of a socket address. To be compatible with the Unix sockaddr_in
* structure, there are address family and padding fields. They aren't used
* by the Sprite Internet server.
*/
typedef struct {
short addrFamily; /* For Unix compatibilty, == AF_INET */
unsigned short port;
Net_InetAddress address;
char padding[8]; /* Not used. */
} Net_InetSocketAddr;
#endif /* _NETINET */
