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1  /*
2   * Copyright (c) 1992, 1994, 1996
3   *	The Regents of the University of California.  All rights reserved.
4   *
5   * Redistribution and use in source and binary forms, with or without
6   * modification, are permitted provided that: (1) source code distributions
7   * retain the above copyright notice and this paragraph in its entirety, (2)
8   * distributions including binary code include the above copyright notice and
9   * this paragraph in its entirety in the documentation or other materials
10   * provided with the distribution, and (3) all advertising materials mentioning
11   * features or use of this software display the following acknowledgement:
12   * ``This product includes software developed by the University of California,
13   * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
14   * the University nor the names of its contributors may be used to endorse
15   * or promote products derived from this software without specific prior
16   * written permission.
17   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
18   * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
19   * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
20   *
21   * @(#) $Header: /tcpdump/master/tcpdump/decnet.h,v 1.11 2002-12-11 07:13:50 guy Exp $ (LBL)
22   */
23  
24  #ifndef WIN32
25  typedef u_int8_t byte[1];		/* single byte field */
26  #else
27  /*
28   * the keyword 'byte' generates conflicts in Windows
29   */
30  typedef unsigned char Byte[1];		/* single byte field */
31  #define byte Byte
32  #endif /* WIN32 */
33  typedef u_int8_t word[2];		/* 2 byte field */
34  typedef u_int8_t longword[4];		/* 4 bytes field */
35  
36  /*
37   * Definitions for DECNET Phase IV protocol headers
38   */
39  union etheraddress {
40  	u_int8_t   dne_addr[6];		/* full ethernet address */
41  	struct {
42  		u_int8_t dne_hiord[4];	/* DECnet HIORD prefix */
43  		u_int8_t dne_nodeaddr[2]; /* DECnet node address */
44  	} dne_remote;
45  };
46  
47  typedef union etheraddress etheraddr;	/* Ethernet address */
48  
49  #define HIORD 0x000400aa		/* high 32-bits of address (swapped) */
50  
51  #define AREAMASK	0176000		/* mask for area field */
52  #define	AREASHIFT	10		/* bit-offset for area field */
53  #define NODEMASK	01777		/* mask for node address field */
54  
55  #define DN_MAXADDL	20		/* max size of DECnet address */
56  struct dn_naddr {
57  	u_int16_t	a_len;		/* length of address */
58  	u_int8_t a_addr[DN_MAXADDL]; /* address as bytes */
59  };
60  
61  /*
62   * Define long and short header formats.
63   */
64  struct shorthdr
65    {
66      byte	sh_flags;		/* route flags */
67      word	sh_dst;			/* destination node address */
68      word	sh_src;			/* source node address */
69      byte	sh_visits;		/* visit count */
70    };
71  
72  struct longhdr
73    {
74      byte	lg_flags;		/* route flags */
75      byte	lg_darea;		/* destination area (reserved) */
76      byte	lg_dsarea;		/* destination subarea (reserved) */
77      etheraddr	lg_dst;			/* destination id */
78      byte	lg_sarea;		/* source area (reserved) */
79      byte	lg_ssarea;		/* source subarea (reserved) */
80      etheraddr	lg_src;			/* source id */
81      byte	lg_nextl2;		/* next level 2 router (reserved) */
82      byte	lg_visits;		/* visit count */
83      byte	lg_service;		/* service class (reserved) */
84      byte	lg_pt;			/* protocol type (reserved) */
85    };
86  
87  union routehdr
88    {
89      struct shorthdr rh_short;		/* short route header */
90      struct longhdr rh_long;		/* long route header */
91    };
92  
93  /*
94   * Define the values of various fields in the protocol messages.
95   *
96   * 1. Data packet formats.
97   */
98  #define RMF_MASK	7		/* mask for message type */
99  #define RMF_SHORT	2		/* short message format */
100  #define RMF_LONG	6		/* long message format */
101  #ifndef RMF_RQR
102  #define RMF_RQR		010		/* request return to sender */
103  #define RMF_RTS		020		/* returning to sender */
104  #define RMF_IE		040		/* intra-ethernet packet */
105  #endif /* RMR_RQR */
106  #define RMF_FVER	0100		/* future version flag */
107  #define RMF_PAD		0200		/* pad field */
108  #define RMF_PADMASK	0177		/* pad field mask */
109  
110  #define VIS_MASK	077		/* visit field mask */
111  
112  /*
113   * 2. Control packet formats.
114   */
115  #define RMF_CTLMASK	017		/* mask for message type */
116  #define RMF_CTLMSG	01		/* control message indicator */
117  #define RMF_INIT	01		/* initialization message */
118  #define RMF_VER		03		/* verification message */
119  #define RMF_TEST	05		/* hello and test message */
120  #define RMF_L1ROUT	07		/* level 1 routing message */
121  #define RMF_L2ROUT	011		/* level 2 routing message */
122  #define RMF_RHELLO	013		/* router hello message */
123  #define RMF_EHELLO	015		/* endnode hello message */
124  
125  #define TI_L2ROUT	01		/* level 2 router */
126  #define TI_L1ROUT	02		/* level 1 router */
127  #define TI_ENDNODE	03		/* endnode */
128  #define TI_VERIF	04		/* verification required */
129  #define TI_BLOCK	010		/* blocking requested */
130  
131  #define VE_VERS		2		/* version number (2) */
132  #define VE_ECO		0		/* ECO number */
133  #define VE_UECO		0		/* user ECO number (0) */
134  
135  #define P3_VERS		1		/* phase III version number (1) */
136  #define P3_ECO		3		/* ECO number (3) */
137  #define P3_UECO		0		/* user ECO number (0) */
138  
139  #define II_L2ROUT	01		/* level 2 router */
140  #define II_L1ROUT	02		/* level 1 router */
141  #define II_ENDNODE	03		/* endnode */
142  #define II_VERIF	04		/* verification required */
143  #define II_NOMCAST	040		/* no multicast traffic accepted */
144  #define II_BLOCK	0100		/* blocking requested */
145  #define II_TYPEMASK	03		/* mask for node type */
146  
147  #define TESTDATA	0252		/* test data bytes */
148  #define TESTLEN		1		/* length of transmitted test data */
149  
150  /*
151   * Define control message formats.
152   */
153  struct initmsgIII			/* phase III initialization message */
154    {
155      byte	inIII_flags;		/* route flags */
156      word	inIII_src;		/* source node address */
157      byte	inIII_info;		/* routing layer information */
158      word	inIII_blksize;		/* maximum data link block size */
159      byte	inIII_vers;		/* version number */
160      byte	inIII_eco;		/* ECO number */
161      byte	inIII_ueco;		/* user ECO number */
162      byte	inIII_rsvd;		/* reserved image field */
163    };
164  
165  struct initmsg				/* initialization message */
166    {
167      byte	in_flags;		/* route flags */
168      word	in_src;			/* source node address */
169      byte	in_info;		/* routing layer information */
170      word	in_blksize;		/* maximum data link block size */
171      byte	in_vers;		/* version number */
172      byte	in_eco;			/* ECO number */
173      byte	in_ueco;		/* user ECO number */
174      word	in_hello;		/* hello timer */
175      byte	in_rsvd;		/* reserved image field */
176    };
177  
178  struct verifmsg				/* verification message */
179    {
180      byte	ve_flags;		/* route flags */
181      word	ve_src;			/* source node address */
182      byte	ve_fcnval;		/* function value image field */
183    };
184  
185  struct testmsg				/* hello and test message */
186    {
187      byte	te_flags;		/* route flags */
188      word	te_src;			/* source node address */
189      byte	te_data;		/* test data image field */
190    };
191  
192  struct l1rout				/* level 1 routing message */
193    {
194      byte	r1_flags;		/* route flags */
195      word	r1_src;			/* source node address */
196      byte	r1_rsvd;		/* reserved field */
197    };
198  
199  struct l2rout				/* level 2 routing message */
200    {
201      byte	r2_flags;		/* route flags */
202      word	r2_src;			/* source node address */
203      byte	r2_rsvd;		/* reserved field */
204    };
205  
206  struct rhellomsg			/* router hello message */
207    {
208      byte	rh_flags;		/* route flags */
209      byte	rh_vers;		/* version number */
210      byte	rh_eco;			/* ECO number */
211      byte	rh_ueco;		/* user ECO number */
212      etheraddr	rh_src;			/* source id */
213      byte	rh_info;		/* routing layer information */
214      word	rh_blksize;		/* maximum data link block size */
215      byte	rh_priority;		/* router's priority */
216      byte	rh_area;		/* reserved */
217      word	rh_hello;		/* hello timer */
218      byte	rh_mpd;			/* reserved */
219    };
220  
221  struct ehellomsg			/* endnode hello message */
222    {
223      byte	eh_flags;		/* route flags */
224      byte	eh_vers;		/* version number */
225      byte	eh_eco;			/* ECO number */
226      byte	eh_ueco;		/* user ECO number */
227      etheraddr	eh_src;			/* source id */
228      byte	eh_info;		/* routing layer information */
229      word	eh_blksize;		/* maximum data link block size */
230      byte	eh_area;		/* area (reserved) */
231      byte	eh_seed[8];		/* verification seed */
232      etheraddr	eh_router;		/* designated router */
233      word	eh_hello;		/* hello timer */
234      byte	eh_mpd;			/* (reserved) */
235      byte	eh_data;		/* test data image field */
236    };
237  
238  union controlmsg
239    {
240      struct initmsg	cm_init;	/* initialization message */
241      struct verifmsg	cm_ver;		/* verification message */
242      struct testmsg	cm_test;	/* hello and test message */
243      struct l1rout	cm_l1rou;	/* level 1 routing message */
244      struct l2rout	cm_l2rout;	/* level 2 routing message */
245      struct rhellomsg	cm_rhello;	/* router hello message */
246      struct ehellomsg	cm_ehello;	/* endnode hello message */
247    };
248  
249  /* Macros for decoding routing-info fields */
250  #define	RI_COST(x)	((x)&0777)
251  #define	RI_HOPS(x)	(((x)>>10)&037)
252  
253  /*
254   * NSP protocol fields and values.
255   */
256  
257  #define NSP_TYPEMASK 014		/* mask to isolate type code */
258  #define NSP_SUBMASK 0160		/* mask to isolate subtype code */
259  #define NSP_SUBSHFT 4			/* shift to move subtype code */
260  
261  #define MFT_DATA 0			/* data message */
262  #define MFT_ACK  04			/* acknowledgement message */
263  #define MFT_CTL  010			/* control message */
264  
265  #define MFS_ILS  020			/* data or I/LS indicator */
266  #define MFS_BOM  040			/* beginning of message (data) */
267  #define MFS_MOM  0			/* middle of message (data) */
268  #define MFS_EOM  0100			/* end of message (data) */
269  #define MFS_INT  040			/* interrupt message */
270  
271  #define MFS_DACK 0			/* data acknowledgement */
272  #define MFS_IACK 020			/* I/LS acknowledgement */
273  #define MFS_CACK 040			/* connect acknowledgement */
274  
275  #define MFS_NOP  0			/* no operation */
276  #define MFS_CI   020			/* connect initiate */
277  #define MFS_CC   040			/* connect confirm */
278  #define MFS_DI   060			/* disconnect initiate */
279  #define MFS_DC   0100			/* disconnect confirm */
280  #define MFS_RCI  0140			/* retransmitted connect initiate */
281  
282  #define SGQ_ACK  0100000		/* ack */
283  #define SGQ_NAK  0110000		/* negative ack */
284  #define SGQ_OACK 0120000		/* other channel ack */
285  #define SGQ_ONAK 0130000		/* other channel negative ack */
286  #define SGQ_MASK 07777			/* mask to isolate seq # */
287  #define SGQ_OTHER 020000		/* other channel qualifier */
288  #define SGQ_DELAY 010000		/* ack delay flag */
289  
290  #define SGQ_EOM  0100000		/* pseudo flag for end-of-message */
291  
292  #define LSM_MASK 03			/* mask for modifier field */
293  #define LSM_NOCHANGE 0			/* no change */
294  #define LSM_DONOTSEND 1			/* do not send data */
295  #define LSM_SEND 2			/* send data */
296  
297  #define LSI_MASK 014			/* mask for interpretation field */
298  #define LSI_DATA 0			/* data segment or message count */
299  #define LSI_INTR 4			/* interrupt request count */
300  #define LSI_INTM 0377			/* funny marker for int. message */
301  
302  #define COS_MASK 014			/* mask for flow control field */
303  #define COS_NONE 0			/* no flow control */
304  #define COS_SEGMENT 04			/* segment flow control */
305  #define COS_MESSAGE 010			/* message flow control */
306  #define COS_CRYPTSER 020		/* cryptographic services requested */
307  #define COS_DEFAULT 1			/* default value for field */
308  
309  #define COI_MASK 3			/* mask for version field */
310  #define COI_32 0			/* version 3.2 */
311  #define COI_31 1			/* version 3.1 */
312  #define COI_40 2			/* version 4.0 */
313  #define COI_41 3			/* version 4.1 */
314  
315  #define MNU_MASK 140			/* mask for session control version */
316  #define MNU_10 000				/* session V1.0 */
317  #define MNU_20 040				/* session V2.0 */
318  #define MNU_ACCESS 1			/* access control present */
319  #define MNU_USRDATA 2			/* user data field present */
320  #define MNU_INVKPROXY 4			/* invoke proxy field present */
321  #define MNU_UICPROXY 8			/* use uic-based proxy */
322  
323  #define DC_NORESOURCES 1		/* no resource reason code */
324  #define DC_NOLINK 41			/* no link terminate reason code */
325  #define DC_COMPLETE 42			/* disconnect complete reason code */
326  
327  #define DI_NOERROR 0			/* user disconnect */
328  #define DI_SHUT 3			/* node is shutting down */
329  #define DI_NOUSER 4			/* destination end user does not exist */
330  #define DI_INVDEST 5			/* invalid end user destination */
331  #define DI_REMRESRC 6			/* insufficient remote resources */
332  #define DI_TPA 8			/* third party abort */
333  #define DI_PROTOCOL 7			/* protocol error discovered */
334  #define DI_ABORT 9			/* user abort */
335  #define DI_LOCALRESRC 32		/* insufficient local resources */
336  #define DI_REMUSERRESRC 33		/* insufficient remote user resources */
337  #define DI_BADACCESS 34			/* bad access control information */
338  #define DI_BADACCNT 36			/* bad ACCOUNT information */
339  #define DI_CONNECTABORT 38		/* connect request cancelled */
340  #define DI_TIMEDOUT 38			/* remote node or user crashed */
341  #define DI_UNREACHABLE 39		/* local timers expired due to ... */
342  #define DI_BADIMAGE 43			/* bad image data in connect */
343  #define DI_SERVMISMATCH 54		/* cryptographic service mismatch */
344  
345  #define UC_OBJREJECT 0			/* object rejected connect */
346  #define UC_USERDISCONNECT 0		/* user disconnect */
347  #define UC_RESOURCES 1			/* insufficient resources (local or remote) */
348  #define UC_NOSUCHNODE 2			/* unrecognized node name */
349  #define UC_REMOTESHUT 3			/* remote node shutting down */
350  #define UC_NOSUCHOBJ 4			/* unrecognized object */
351  #define UC_INVOBJFORMAT 5		/* invalid object name format */
352  #define UC_OBJTOOBUSY 6			/* object too busy */
353  #define UC_NETWORKABORT 8		/* network abort */
354  #define UC_USERABORT 9			/* user abort */
355  #define UC_INVNODEFORMAT 10		/* invalid node name format */
356  #define UC_LOCALSHUT 11			/* local node shutting down */
357  #define UC_ACCESSREJECT 34		/* invalid access control information */
358  #define UC_NORESPONSE 38		/* no response from object */
359  #define UC_UNREACHABLE 39		/* node unreachable */
360  
361  /*
362   * NSP message formats.
363   */
364  struct nsphdr				/* general nsp header */
365    {
366      byte	nh_flags;		/* message flags */
367      word	nh_dst;			/* destination link address */
368      word	nh_src;			/* source link address */
369    };
370  
371  struct seghdr				/* data segment header */
372    {
373      byte	sh_flags;		/* message flags */
374      word	sh_dst;			/* destination link address */
375      word	sh_src;			/* source link address */
376      word	sh_seq[3];		/* sequence numbers */
377    };
378  
379  struct minseghdr			/* minimum data segment header */
380    {
381      byte	ms_flags;		/* message flags */
382      word	ms_dst;			/* destination link address */
383      word	ms_src;			/* source link address */
384      word	ms_seq;			/* sequence number */
385    };
386  
387  struct lsmsg				/* link service message (after hdr) */
388    {
389      byte	ls_lsflags;		/* link service flags */
390      byte	ls_fcval;		/* flow control value */
391    };
392  
393  struct ackmsg				/* acknowledgement message */
394    {
395      byte	ak_flags;		/* message flags */
396      word	ak_dst;			/* destination link address */
397      word	ak_src;			/* source link address */
398      word	ak_acknum[2];		/* acknowledgement numbers */
399    };
400  
401  struct minackmsg			/* minimum acknowledgement message */
402    {
403      byte	mk_flags;		/* message flags */
404      word	mk_dst;			/* destination link address */
405      word	mk_src;			/* source link address */
406      word	mk_acknum;		/* acknowledgement number */
407    };
408  
409  struct ciackmsg				/* connect acknowledgement message */
410    {
411      byte	ck_flags;		/* message flags */
412      word	ck_dst;			/* destination link address */
413    };
414  
415  struct cimsg				/* connect initiate message */
416    {
417      byte	ci_flags;		/* message flags */
418      word	ci_dst;			/* destination link address (0) */
419      word	ci_src;			/* source link address */
420      byte	ci_services;		/* requested services */
421      byte	ci_info;		/* information */
422      word	ci_segsize;		/* maximum segment size */
423    };
424  
425  struct ccmsg				/* connect confirm message */
426    {
427      byte	cc_flags;		/* message flags */
428      word	cc_dst;			/* destination link address */
429      word	cc_src;			/* source link address */
430      byte	cc_services;		/* requested services */
431      byte	cc_info;		/* information */
432      word	cc_segsize;		/* maximum segment size */
433      byte	cc_optlen;		/* optional data length */
434    };
435  
436  struct cnmsg				/* generic connect message */
437    {
438      byte	cn_flags;		/* message flags */
439      word	cn_dst;			/* destination link address */
440      word	cn_src;			/* source link address */
441      byte	cn_services;		/* requested services */
442      byte	cn_info;		/* information */
443      word	cn_segsize;		/* maximum segment size */
444    };
445  
446  struct dimsg				/* disconnect initiate message */
447    {
448      byte	di_flags;		/* message flags */
449      word	di_dst;			/* destination link address */
450      word	di_src;			/* source link address */
451      word	di_reason;		/* reason code */
452      byte	di_optlen;		/* optional data length */
453    };
454  
455  struct dcmsg				/* disconnect confirm message */
456    {
457      byte	dc_flags;		/* message flags */
458      word	dc_dst;			/* destination link address */
459      word	dc_src;			/* source link address */
460      word	dc_reason;		/* reason code */
461    };
462