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454 lines
16 KiB
C
454 lines
16 KiB
C
/*
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* Copyright (c) 1992, 1994, 1996
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that: (1) source code distributions
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* retain the above copyright notice and this paragraph in its entirety, (2)
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* distributions including binary code include the above copyright notice and
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* this paragraph in its entirety in the documentation or other materials
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* provided with the distribution, and (3) all advertising materials mentioning
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* features or use of this software display the following acknowledgement:
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* ``This product includes software developed by the University of California,
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* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
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* the University nor the names of its contributors may be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*
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* @(#) $Header: decnet.h,v 1.6 96/07/15 18:15:19 leres Exp $ (LBL)
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*/
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typedef unsigned char byte[1]; /* single byte field */
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typedef unsigned char word[2]; /* 2 byte field */
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typedef unsigned char longword[4]; /* 4 bytes field */
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/*
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* Definitions for DECNET Phase IV protocol headers
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*/
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union etheraddress {
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unsigned char dne_addr[6]; /* full ethernet address */
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struct {
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unsigned char dne_hiord[4]; /* DECnet HIORD prefix */
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unsigned char dne_nodeaddr[2]; /* DECnet node address */
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} dne_remote;
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};
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typedef union etheraddress etheraddr; /* Ethernet address */
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#define HIORD 0x000400aa /* high 32-bits of address (swapped) */
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#define AREAMASK 0176000 /* mask for area field */
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#define AREASHIFT 10 /* bit-offset for area field */
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#define NODEMASK 01777 /* mask for node address field */
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#define DN_MAXADDL 20 /* max size of DECnet address */
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struct dn_naddr {
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unsigned short a_len; /* length of address */
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unsigned char a_addr[DN_MAXADDL]; /* address as bytes */
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};
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/*
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* Define long and short header formats.
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*/
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struct shorthdr
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{
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byte sh_flags; /* route flags */
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word sh_dst; /* destination node address */
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word sh_src; /* source node address */
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byte sh_visits; /* visit count */
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};
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struct longhdr
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{
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byte lg_flags; /* route flags */
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byte lg_darea; /* destination area (reserved) */
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byte lg_dsarea; /* destination subarea (reserved) */
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etheraddr lg_dst; /* destination id */
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byte lg_sarea; /* source area (reserved) */
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byte lg_ssarea; /* source subarea (reserved) */
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etheraddr lg_src; /* source id */
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byte lg_nextl2; /* next level 2 router (reserved) */
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byte lg_visits; /* visit count */
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byte lg_service; /* service class (reserved) */
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byte lg_pt; /* protocol type (reserved) */
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};
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union routehdr
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{
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struct shorthdr rh_short; /* short route header */
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struct longhdr rh_long; /* long route header */
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};
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/*
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* Define the values of various fields in the protocol messages.
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*
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* 1. Data packet formats.
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*/
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#define RMF_MASK 7 /* mask for message type */
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#define RMF_SHORT 2 /* short message format */
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#define RMF_LONG 6 /* long message format */
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#ifndef RMF_RQR
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#define RMF_RQR 010 /* request return to sender */
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#define RMF_RTS 020 /* returning to sender */
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#define RMF_IE 040 /* intra-ethernet packet */
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#endif /* RMR_RQR */
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#define RMF_FVER 0100 /* future version flag */
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#define RMF_PAD 0200 /* pad field */
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#define RMF_PADMASK 0177 /* pad field mask */
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#define VIS_MASK 077 /* visit field mask */
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/*
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* 2. Control packet formats.
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*/
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#define RMF_CTLMASK 017 /* mask for message type */
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#define RMF_CTLMSG 01 /* control message indicator */
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#define RMF_INIT 01 /* initialization message */
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#define RMF_VER 03 /* verification message */
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#define RMF_TEST 05 /* hello and test message */
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#define RMF_L1ROUT 07 /* level 1 routing message */
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#define RMF_L2ROUT 011 /* level 2 routing message */
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#define RMF_RHELLO 013 /* router hello message */
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#define RMF_EHELLO 015 /* endnode hello message */
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#define TI_L2ROUT 01 /* level 2 router */
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#define TI_L1ROUT 02 /* level 1 router */
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#define TI_ENDNODE 03 /* endnode */
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#define TI_VERIF 04 /* verification required */
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#define TI_BLOCK 010 /* blocking requested */
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#define VE_VERS 2 /* version number (2) */
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#define VE_ECO 0 /* ECO number */
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#define VE_UECO 0 /* user ECO number (0) */
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#define P3_VERS 1 /* phase III version number (1) */
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#define P3_ECO 3 /* ECO number (3) */
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#define P3_UECO 0 /* user ECO number (0) */
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#define II_L2ROUT 01 /* level 2 router */
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#define II_L1ROUT 02 /* level 1 router */
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#define II_ENDNODE 03 /* endnode */
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#define II_VERIF 04 /* verification required */
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#define II_NOMCAST 040 /* no multicast traffic accepted */
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#define II_BLOCK 0100 /* blocking requested */
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#define II_TYPEMASK 03 /* mask for node type */
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#define TESTDATA 0252 /* test data bytes */
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#define TESTLEN 1 /* length of transmitted test data */
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/*
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* Define control message formats.
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*/
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struct initmsgIII /* phase III initialization message */
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{
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byte inIII_flags; /* route flags */
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word inIII_src; /* source node address */
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byte inIII_info; /* routing layer information */
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word inIII_blksize; /* maximum data link block size */
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byte inIII_vers; /* version number */
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byte inIII_eco; /* ECO number */
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byte inIII_ueco; /* user ECO number */
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byte inIII_rsvd; /* reserved image field */
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};
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struct initmsg /* initialization message */
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{
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byte in_flags; /* route flags */
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word in_src; /* source node address */
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byte in_info; /* routing layer information */
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word in_blksize; /* maximum data link block size */
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byte in_vers; /* version number */
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byte in_eco; /* ECO number */
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byte in_ueco; /* user ECO number */
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word in_hello; /* hello timer */
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byte in_rsvd; /* reserved image field */
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};
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struct verifmsg /* verification message */
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{
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byte ve_flags; /* route flags */
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word ve_src; /* source node address */
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byte ve_fcnval; /* function value image field */
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};
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struct testmsg /* hello and test message */
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{
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byte te_flags; /* route flags */
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word te_src; /* source node address */
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byte te_data; /* test data image field */
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};
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struct l1rout /* level 1 routing message */
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{
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byte r1_flags; /* route flags */
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word r1_src; /* source node address */
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byte r1_rsvd; /* reserved field */
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};
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struct l2rout /* level 2 routing message */
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{
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byte r2_flags; /* route flags */
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word r2_src; /* source node address */
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byte r2_rsvd; /* reserved field */
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};
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struct rhellomsg /* router hello message */
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{
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byte rh_flags; /* route flags */
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byte rh_vers; /* version number */
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byte rh_eco; /* ECO number */
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byte rh_ueco; /* user ECO number */
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etheraddr rh_src; /* source id */
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byte rh_info; /* routing layer information */
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word rh_blksize; /* maximum data link block size */
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byte rh_priority; /* router's priority */
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byte rh_area; /* reserved */
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word rh_hello; /* hello timer */
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byte rh_mpd; /* reserved */
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};
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struct ehellomsg /* endnode hello message */
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{
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byte eh_flags; /* route flags */
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byte eh_vers; /* version number */
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byte eh_eco; /* ECO number */
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byte eh_ueco; /* user ECO number */
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etheraddr eh_src; /* source id */
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byte eh_info; /* routing layer information */
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word eh_blksize; /* maximum data link block size */
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byte eh_area; /* area (reserved) */
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byte eh_seed[8]; /* verification seed */
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etheraddr eh_router; /* designated router */
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word eh_hello; /* hello timer */
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byte eh_mpd; /* (reserved) */
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byte eh_data; /* test data image field */
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};
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union controlmsg
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{
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struct initmsg cm_init; /* initialization message */
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struct verifmsg cm_ver; /* verification message */
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struct testmsg cm_test; /* hello and test message */
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struct l1rout cm_l1rou; /* level 1 routing message */
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struct l2rout cm_l2rout; /* level 2 routing message */
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struct rhellomsg cm_rhello; /* router hello message */
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struct ehellomsg cm_ehello; /* endnode hello message */
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};
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/* Macros for decoding routing-info fields */
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#define RI_COST(x) ((x)&0777)
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#define RI_HOPS(x) (((x)>>10)&037)
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/*
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* NSP protocol fields and values.
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*/
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#define NSP_TYPEMASK 014 /* mask to isolate type code */
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#define NSP_SUBMASK 0160 /* mask to isolate subtype code */
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#define NSP_SUBSHFT 4 /* shift to move subtype code */
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#define MFT_DATA 0 /* data message */
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#define MFT_ACK 04 /* acknowledgement message */
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#define MFT_CTL 010 /* control message */
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#define MFS_ILS 020 /* data or I/LS indicator */
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#define MFS_BOM 040 /* beginning of message (data) */
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#define MFS_MOM 0 /* middle of message (data) */
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#define MFS_EOM 0100 /* end of message (data) */
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#define MFS_INT 040 /* interrupt message */
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#define MFS_DACK 0 /* data acknowledgement */
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#define MFS_IACK 020 /* I/LS acknowledgement */
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#define MFS_CACK 040 /* connect acknowledgement */
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#define MFS_NOP 0 /* no operation */
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#define MFS_CI 020 /* connect initiate */
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#define MFS_CC 040 /* connect confirm */
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#define MFS_DI 060 /* disconnect initiate */
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#define MFS_DC 0100 /* disconnect confirm */
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#define MFS_RCI 0140 /* retransmitted connect initiate */
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#define SGQ_ACK 0100000 /* ack */
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#define SGQ_NAK 0110000 /* negative ack */
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#define SGQ_OACK 0120000 /* other channel ack */
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#define SGQ_ONAK 0130000 /* other channel negative ack */
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#define SGQ_MASK 07777 /* mask to isolate seq # */
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#define SGQ_OTHER 020000 /* other channel qualifier */
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#define SGQ_DELAY 010000 /* ack delay flag */
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#define SGQ_EOM 0100000 /* pseudo flag for end-of-message */
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#define LSM_MASK 03 /* mask for modifier field */
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#define LSM_NOCHANGE 0 /* no change */
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#define LSM_DONOTSEND 1 /* do not send data */
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#define LSM_SEND 2 /* send data */
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#define LSI_MASK 014 /* mask for interpretation field */
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#define LSI_DATA 0 /* data segment or message count */
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#define LSI_INTR 4 /* interrupt request count */
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#define LSI_INTM 0377 /* funny marker for int. message */
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#define COS_MASK 014 /* mask for flow control field */
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#define COS_NONE 0 /* no flow control */
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#define COS_SEGMENT 04 /* segment flow control */
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#define COS_MESSAGE 010 /* message flow control */
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#define COS_CRYPTSER 020 /* cryptographic services requested */
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#define COS_DEFAULT 1 /* default value for field */
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#define COI_MASK 3 /* mask for version field */
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#define COI_32 0 /* version 3.2 */
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#define COI_31 1 /* version 3.1 */
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#define COI_40 2 /* version 4.0 */
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#define COI_41 3 /* version 4.1 */
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#define MNU_MASK 140 /* mask for session control version */
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#define MNU_10 000 /* session V1.0 */
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#define MNU_20 040 /* session V2.0 */
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#define MNU_ACCESS 1 /* access control present */
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#define MNU_USRDATA 2 /* user data field present */
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#define MNU_INVKPROXY 4 /* invoke proxy field present */
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#define MNU_UICPROXY 8 /* use uic-based proxy */
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#define DC_NORESOURCES 1 /* no resource reason code */
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#define DC_NOLINK 41 /* no link terminate reason code */
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#define DC_COMPLETE 42 /* disconnect complete reason code */
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#define DI_NOERROR 0 /* user disconnect */
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#define DI_SHUT 3 /* node is shutting down */
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#define DI_NOUSER 4 /* destination end user does not exist */
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#define DI_INVDEST 5 /* invalid end user destination */
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#define DI_REMRESRC 6 /* insufficient remote resources */
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#define DI_TPA 8 /* third party abort */
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#define DI_PROTOCOL 7 /* protocol error discovered */
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#define DI_ABORT 9 /* user abort */
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#define DI_LOCALRESRC 32 /* insufficient local resources */
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#define DI_REMUSERRESRC 33 /* insufficient remote user resources */
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#define DI_BADACCESS 34 /* bad access control information */
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#define DI_BADACCNT 36 /* bad ACCOUNT information */
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#define DI_CONNECTABORT 38 /* connect request cancelled */
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#define DI_TIMEDOUT 38 /* remote node or user crashed */
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#define DI_UNREACHABLE 39 /* local timers expired due to ... */
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#define DI_BADIMAGE 43 /* bad image data in connect */
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#define DI_SERVMISMATCH 54 /* cryptographic service mismatch */
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#define UC_OBJREJECT 0 /* object rejected connect */
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#define UC_USERDISCONNECT 0 /* user disconnect */
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#define UC_RESOURCES 1 /* insufficient resources (local or remote) */
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#define UC_NOSUCHNODE 2 /* unrecognized node name */
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#define UC_REMOTESHUT 3 /* remote node shutting down */
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#define UC_NOSUCHOBJ 4 /* unrecognized object */
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#define UC_INVOBJFORMAT 5 /* invalid object name format */
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#define UC_OBJTOOBUSY 6 /* object too busy */
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#define UC_NETWORKABORT 8 /* network abort */
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#define UC_USERABORT 9 /* user abort */
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#define UC_INVNODEFORMAT 10 /* invalid node name format */
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#define UC_LOCALSHUT 11 /* local node shutting down */
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#define UC_ACCESSREJECT 34 /* invalid access control information */
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#define UC_NORESPONSE 38 /* no response from object */
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#define UC_UNREACHABLE 39 /* node unreachable */
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/*
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* NSP message formats.
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*/
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struct nsphdr /* general nsp header */
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{
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byte nh_flags; /* message flags */
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word nh_dst; /* destination link address */
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word nh_src; /* source link address */
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};
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struct seghdr /* data segment header */
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{
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byte sh_flags; /* message flags */
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word sh_dst; /* destination link address */
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word sh_src; /* source link address */
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word sh_seq[3]; /* sequence numbers */
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};
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struct minseghdr /* minimum data segment header */
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{
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byte ms_flags; /* message flags */
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word ms_dst; /* destination link address */
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word ms_src; /* source link address */
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word ms_seq; /* sequence number */
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};
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struct lsmsg /* link service message (after hdr) */
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{
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byte ls_lsflags; /* link service flags */
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byte ls_fcval; /* flow control value */
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};
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struct ackmsg /* acknowledgement message */
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{
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byte ak_flags; /* message flags */
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word ak_dst; /* destination link address */
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word ak_src; /* source link address */
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word ak_acknum[2]; /* acknowledgement numbers */
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};
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struct minackmsg /* minimum acknowledgement message */
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{
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byte mk_flags; /* message flags */
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word mk_dst; /* destination link address */
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word mk_src; /* source link address */
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word mk_acknum; /* acknowledgement number */
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};
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struct ciackmsg /* connect acknowledgement message */
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{
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byte ck_flags; /* message flags */
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word ck_dst; /* destination link address */
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};
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struct cimsg /* connect initiate message */
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{
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byte ci_flags; /* message flags */
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word ci_dst; /* destination link address (0) */
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word ci_src; /* source link address */
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byte ci_services; /* requested services */
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byte ci_info; /* information */
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word ci_segsize; /* maximum segment size */
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};
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struct ccmsg /* connect confirm message */
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{
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byte cc_flags; /* message flags */
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word cc_dst; /* destination link address */
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word cc_src; /* source link address */
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byte cc_services; /* requested services */
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byte cc_info; /* information */
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word cc_segsize; /* maximum segment size */
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byte cc_optlen; /* optional data length */
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};
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struct cnmsg /* generic connect message */
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{
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byte cn_flags; /* message flags */
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word cn_dst; /* destination link address */
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word cn_src; /* source link address */
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byte cn_services; /* requested services */
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byte cn_info; /* information */
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word cn_segsize; /* maximum segment size */
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};
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struct dimsg /* disconnect initiate message */
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{
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byte di_flags; /* message flags */
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word di_dst; /* destination link address */
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word di_src; /* source link address */
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word di_reason; /* reason code */
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byte di_optlen; /* optional data length */
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};
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struct dcmsg /* disconnect confirm message */
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{
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byte dc_flags; /* message flags */
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word dc_dst; /* destination link address */
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word dc_src; /* source link address */
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word dc_reason; /* reason code */
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};
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