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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 1.7 2000-10-03 02:54:55 itojun Exp $ (LBL)
  22  */
  23
  24 typedef u_int8_t byte[1];               /* single byte field */
  25 typedef u_int8_t word[2];               /* 2 byte field */
  26 typedef u_int8_t longword[4];           /* 4 bytes field */
  27
  28 /*
  29  * Definitions for DECNET Phase IV protocol headers
  30  */
  31 union etheraddress {
  32         u_int8_t   dne_addr[6];         /* full ethernet address */
  33         struct {
  34                 u_int8_t dne_hiord[4];  /* DECnet HIORD prefix */
  35                 u_int8_t dne_nodeaddr[2]; /* DECnet node address */
  36         } dne_remote;
  37 };
  38
  39 typedef union etheraddress etheraddr;   /* Ethernet address */
  40
  41 #define HIORD 0x000400aa                /* high 32-bits of address (swapped) */
  42
  43 #define AREAMASK        0176000         /* mask for area field */
  44 #define AREASHIFT       10              /* bit-offset for area field */
  45 #define NODEMASK        01777           /* mask for node address field */
  46
  47 #define DN_MAXADDL      20              /* max size of DECnet address */
  48 struct dn_naddr {
  49         u_int16_t       a_len;          /* length of address */
  50         u_int8_t a_addr[DN_MAXADDL]; /* address as bytes */
  51 };
  52
  53 /*
  54  * Define long and short header formats.
  55  */
  56 struct shorthdr
  57   {
  58     byte        sh_flags;               /* route flags */
  59     word        sh_dst;                 /* destination node address */
  60     word        sh_src;                 /* source node address */
  61     byte        sh_visits;              /* visit count */
  62   };
  63
  64 struct longhdr
  65   {
  66     byte        lg_flags;               /* route flags */
  67     byte        lg_darea;               /* destination area (reserved) */
  68     byte        lg_dsarea;              /* destination subarea (reserved) */
  69     etheraddr   lg_dst;                 /* destination id */
  70     byte        lg_sarea;               /* source area (reserved) */
  71     byte        lg_ssarea;              /* source subarea (reserved) */
  72     etheraddr   lg_src;                 /* source id */
  73     byte        lg_nextl2;              /* next level 2 router (reserved) */
  74     byte        lg_visits;              /* visit count */
  75     byte        lg_service;             /* service class (reserved) */
  76     byte        lg_pt;                  /* protocol type (reserved) */
  77   };
  78
  79 union routehdr
  80   {
  81     struct shorthdr rh_short;           /* short route header */
  82     struct longhdr rh_long;             /* long route header */
  83   };
  84
  85 /*
  86  * Define the values of various fields in the protocol messages.
  87  *
  88  * 1. Data packet formats.
  89  */
  90 #define RMF_MASK        7               /* mask for message type */
  91 #define RMF_SHORT       2               /* short message format */
  92 #define RMF_LONG        6               /* long message format */
  93 #ifndef RMF_RQR
  94 #define RMF_RQR         010             /* request return to sender */
  95 #define RMF_RTS         020             /* returning to sender */
  96 #define RMF_IE          040             /* intra-ethernet packet */
  97 #endif /* RMR_RQR */
  98 #define RMF_FVER        0100            /* future version flag */
  99 #define RMF_PAD         0200            /* pad field */
 100 #define RMF_PADMASK     0177            /* pad field mask */
 101
 102 #define VIS_MASK        077             /* visit field mask */
 103
 104 /*
 105  * 2. Control packet formats.
 106  */
 107 #define RMF_CTLMASK     017             /* mask for message type */
 108 #define RMF_CTLMSG      01              /* control message indicator */
 109 #define RMF_INIT        01              /* initialization message */
 110 #define RMF_VER         03              /* verification message */
 111 #define RMF_TEST        05              /* hello and test message */
 112 #define RMF_L1ROUT      07              /* level 1 routing message */
 113 #define RMF_L2ROUT      011             /* level 2 routing message */
 114 #define RMF_RHELLO      013             /* router hello message */
 115 #define RMF_EHELLO      015             /* endnode hello message */
 116
 117 #define TI_L2ROUT       01              /* level 2 router */
 118 #define TI_L1ROUT       02              /* level 1 router */
 119 #define TI_ENDNODE      03              /* endnode */
 120 #define TI_VERIF        04              /* verification required */
 121 #define TI_BLOCK        010             /* blocking requested */
 122
 123 #define VE_VERS         2               /* version number (2) */
 124 #define VE_ECO          0               /* ECO number */
 125 #define VE_UECO         0               /* user ECO number (0) */
 126
 127 #define P3_VERS         1               /* phase III version number (1) */
 128 #define P3_ECO          3               /* ECO number (3) */
 129 #define P3_UECO         0               /* user ECO number (0) */
 130
 131 #define II_L2ROUT       01              /* level 2 router */
 132 #define II_L1ROUT       02              /* level 1 router */
 133 #define II_ENDNODE      03              /* endnode */
 134 #define II_VERIF        04              /* verification required */
 135 #define II_NOMCAST      040             /* no multicast traffic accepted */
 136 #define II_BLOCK        0100            /* blocking requested */
 137 #define II_TYPEMASK     03              /* mask for node type */
 138
 139 #define TESTDATA        0252            /* test data bytes */
 140 #define TESTLEN         1               /* length of transmitted test data */
 141
 142 /*
 143  * Define control message formats.
 144  */
 145 struct initmsgIII                       /* phase III initialization message */
 146   {
 147     byte        inIII_flags;            /* route flags */
 148     word        inIII_src;              /* source node address */
 149     byte        inIII_info;             /* routing layer information */
 150     word        inIII_blksize;          /* maximum data link block size */
 151     byte        inIII_vers;             /* version number */
 152     byte        inIII_eco;              /* ECO number */
 153     byte        inIII_ueco;             /* user ECO number */
 154     byte        inIII_rsvd;             /* reserved image field */
 155   };
 156
 157 struct initmsg                          /* initialization message */
 158   {
 159     byte        in_flags;               /* route flags */
 160     word        in_src;                 /* source node address */
 161     byte        in_info;                /* routing layer information */
 162     word        in_blksize;             /* maximum data link block size */
 163     byte        in_vers;                /* version number */
 164     byte        in_eco;                 /* ECO number */
 165     byte        in_ueco;                /* user ECO number */
 166     word        in_hello;               /* hello timer */
 167     byte        in_rsvd;                /* reserved image field */
 168   };
 169
 170 struct verifmsg                         /* verification message */
 171   {
 172     byte        ve_flags;               /* route flags */
 173     word        ve_src;                 /* source node address */
 174     byte        ve_fcnval;              /* function value image field */
 175   };
 176
 177 struct testmsg                          /* hello and test message */
 178   {
 179     byte        te_flags;               /* route flags */
 180     word        te_src;                 /* source node address */
 181     byte        te_data;                /* test data image field */
 182   };
 183
 184 struct l1rout                           /* level 1 routing message */
 185   {
 186     byte        r1_flags;               /* route flags */
 187     word        r1_src;                 /* source node address */
 188     byte        r1_rsvd;                /* reserved field */
 189   };
 190
 191 struct l2rout                           /* level 2 routing message */
 192   {
 193     byte        r2_flags;               /* route flags */
 194     word        r2_src;                 /* source node address */
 195     byte        r2_rsvd;                /* reserved field */
 196   };
 197
 198 struct rhellomsg                        /* router hello message */
 199   {
 200     byte        rh_flags;               /* route flags */
 201     byte        rh_vers;                /* version number */
 202     byte        rh_eco;                 /* ECO number */
 203     byte        rh_ueco;                /* user ECO number */
 204     etheraddr   rh_src;                 /* source id */
 205     byte        rh_info;                /* routing layer information */
 206     word        rh_blksize;             /* maximum data link block size */
 207     byte        rh_priority;            /* router's priority */
 208     byte        rh_area;                /* reserved */
 209     word        rh_hello;               /* hello timer */
 210     byte        rh_mpd;                 /* reserved */
 211   };
 212
 213 struct ehellomsg                        /* endnode hello message */
 214   {
 215     byte        eh_flags;               /* route flags */
 216     byte        eh_vers;                /* version number */
 217     byte        eh_eco;                 /* ECO number */
 218     byte        eh_ueco;                /* user ECO number */
 219     etheraddr   eh_src;                 /* source id */
 220     byte        eh_info;                /* routing layer information */
 221     word        eh_blksize;             /* maximum data link block size */
 222     byte        eh_area;                /* area (reserved) */
 223     byte        eh_seed[8];             /* verification seed */
 224     etheraddr   eh_router;              /* designated router */
 225     word        eh_hello;               /* hello timer */
 226     byte        eh_mpd;                 /* (reserved) */
 227     byte        eh_data;                /* test data image field */
 228   };
 229
 230 union controlmsg
 231   {
 232     struct initmsg      cm_init;        /* initialization message */
 233     struct verifmsg     cm_ver;         /* verification message */
 234     struct testmsg      cm_test;        /* hello and test message */
 235     struct l1rout       cm_l1rou;       /* level 1 routing message */
 236     struct l2rout       cm_l2rout;      /* level 2 routing message */
 237     struct rhellomsg    cm_rhello;      /* router hello message */
 238     struct ehellomsg    cm_ehello;      /* endnode hello message */
 239   };
 240
 241 /* Macros for decoding routing-info fields */
 242 #define RI_COST(x)      ((x)&0777)
 243 #define RI_HOPS(x)      (((x)>>10)&037)
 244 \f
 245 /*
 246  * NSP protocol fields and values.
 247  */
 248
 249 #define NSP_TYPEMASK 014                /* mask to isolate type code */
 250 #define NSP_SUBMASK 0160                /* mask to isolate subtype code */
 251 #define NSP_SUBSHFT 4                   /* shift to move subtype code */
 252
 253 #define MFT_DATA 0                      /* data message */
 254 #define MFT_ACK  04                     /* acknowledgement message */
 255 #define MFT_CTL  010                    /* control message */
 256
 257 #define MFS_ILS  020                    /* data or I/LS indicator */
 258 #define MFS_BOM  040                    /* beginning of message (data) */
 259 #define MFS_MOM  0                      /* middle of message (data) */
 260 #define MFS_EOM  0100                   /* end of message (data) */
 261 #define MFS_INT  040                    /* interrupt message */
 262
 263 #define MFS_DACK 0                      /* data acknowledgement */
 264 #define MFS_IACK 020                    /* I/LS acknowledgement */
 265 #define MFS_CACK 040                    /* connect acknowledgement */
 266
 267 #define MFS_NOP  0                      /* no operation */
 268 #define MFS_CI   020                    /* connect initiate */
 269 #define MFS_CC   040                    /* connect confirm */
 270 #define MFS_DI   060                    /* disconnect initiate */
 271 #define MFS_DC   0100                   /* disconnect confirm */
 272 #define MFS_RCI  0140                   /* retransmitted connect initiate */
 273
 274 #define SGQ_ACK  0100000                /* ack */
 275 #define SGQ_NAK  0110000                /* negative ack */
 276 #define SGQ_OACK 0120000                /* other channel ack */
 277 #define SGQ_ONAK 0130000                /* other channel negative ack */
 278 #define SGQ_MASK 07777                  /* mask to isolate seq # */
 279 #define SGQ_OTHER 020000                /* other channel qualifier */
 280 #define SGQ_DELAY 010000                /* ack delay flag */
 281
 282 #define SGQ_EOM  0100000                /* pseudo flag for end-of-message */
 283
 284 #define LSM_MASK 03                     /* mask for modifier field */
 285 #define LSM_NOCHANGE 0                  /* no change */
 286 #define LSM_DONOTSEND 1                 /* do not send data */
 287 #define LSM_SEND 2                      /* send data */
 288
 289 #define LSI_MASK 014                    /* mask for interpretation field */
 290 #define LSI_DATA 0                      /* data segment or message count */
 291 #define LSI_INTR 4                      /* interrupt request count */
 292 #define LSI_INTM 0377                   /* funny marker for int. message */
 293
 294 #define COS_MASK 014                    /* mask for flow control field */
 295 #define COS_NONE 0                      /* no flow control */
 296 #define COS_SEGMENT 04                  /* segment flow control */
 297 #define COS_MESSAGE 010                 /* message flow control */
 298 #define COS_CRYPTSER 020                /* cryptographic services requested */
 299 #define COS_DEFAULT 1                   /* default value for field */
 300
 301 #define COI_MASK 3                      /* mask for version field */
 302 #define COI_32 0                        /* version 3.2 */
 303 #define COI_31 1                        /* version 3.1 */
 304 #define COI_40 2                        /* version 4.0 */
 305 #define COI_41 3                        /* version 4.1 */
 306
 307 #define MNU_MASK 140                    /* mask for session control version */
 308 #define MNU_10 000                              /* session V1.0 */
 309 #define MNU_20 040                              /* session V2.0 */
 310 #define MNU_ACCESS 1                    /* access control present */
 311 #define MNU_USRDATA 2                   /* user data field present */
 312 #define MNU_INVKPROXY 4                 /* invoke proxy field present */
 313 #define MNU_UICPROXY 8                  /* use uic-based proxy */
 314
 315 #define DC_NORESOURCES 1                /* no resource reason code */
 316 #define DC_NOLINK 41                    /* no link terminate reason code */
 317 #define DC_COMPLETE 42                  /* disconnect complete reason code */
 318
 319 #define DI_NOERROR 0                    /* user disconnect */
 320 #define DI_SHUT 3                       /* node is shutting down */
 321 #define DI_NOUSER 4                     /* destination end user does not exist */
 322 #define DI_INVDEST 5                    /* invalid end user destination */
 323 #define DI_REMRESRC 6                   /* insufficient remote resources */
 324 #define DI_TPA 8                        /* third party abort */
 325 #define DI_PROTOCOL 7                   /* protocol error discovered */
 326 #define DI_ABORT 9                      /* user abort */
 327 #define DI_LOCALRESRC 32                /* insufficient local resources */
 328 #define DI_REMUSERRESRC 33              /* insufficient remote user resources */
 329 #define DI_BADACCESS 34                 /* bad access control information */
 330 #define DI_BADACCNT 36                  /* bad ACCOUNT information */
 331 #define DI_CONNECTABORT 38              /* connect request cancelled */
 332 #define DI_TIMEDOUT 38                  /* remote node or user crashed */
 333 #define DI_UNREACHABLE 39               /* local timers expired due to ... */
 334 #define DI_BADIMAGE 43                  /* bad image data in connect */
 335 #define DI_SERVMISMATCH 54              /* cryptographic service mismatch */
 336
 337 #define UC_OBJREJECT 0                  /* object rejected connect */
 338 #define UC_USERDISCONNECT 0             /* user disconnect */
 339 #define UC_RESOURCES 1                  /* insufficient resources (local or remote) */
 340 #define UC_NOSUCHNODE 2                 /* unrecognized node name */
 341 #define UC_REMOTESHUT 3                 /* remote node shutting down */
 342 #define UC_NOSUCHOBJ 4                  /* unrecognized object */
 343 #define UC_INVOBJFORMAT 5               /* invalid object name format */
 344 #define UC_OBJTOOBUSY 6                 /* object too busy */
 345 #define UC_NETWORKABORT 8               /* network abort */
 346 #define UC_USERABORT 9                  /* user abort */
 347 #define UC_INVNODEFORMAT 10             /* invalid node name format */
 348 #define UC_LOCALSHUT 11                 /* local node shutting down */
 349 #define UC_ACCESSREJECT 34              /* invalid access control information */
 350 #define UC_NORESPONSE 38                /* no response from object */
 351 #define UC_UNREACHABLE 39               /* node unreachable */
 352
 353 /*
 354  * NSP message formats.
 355  */
 356 struct nsphdr                           /* general nsp header */
 357   {
 358     byte        nh_flags;               /* message flags */
 359     word        nh_dst;                 /* destination link address */
 360     word        nh_src;                 /* source link address */
 361   };
 362
 363 struct seghdr                           /* data segment header */
 364   {
 365     byte        sh_flags;               /* message flags */
 366     word        sh_dst;                 /* destination link address */
 367     word        sh_src;                 /* source link address */
 368     word        sh_seq[3];              /* sequence numbers */
 369   };
 370
 371 struct minseghdr                        /* minimum data segment header */
 372   {
 373     byte        ms_flags;               /* message flags */
 374     word        ms_dst;                 /* destination link address */
 375     word        ms_src;                 /* source link address */
 376     word        ms_seq;                 /* sequence number */
 377   };
 378
 379 struct lsmsg                            /* link service message (after hdr) */
 380   {
 381     byte        ls_lsflags;             /* link service flags */
 382     byte        ls_fcval;               /* flow control value */
 383   };
 384
 385 struct ackmsg                           /* acknowledgement message */
 386   {
 387     byte        ak_flags;               /* message flags */
 388     word        ak_dst;                 /* destination link address */
 389     word        ak_src;                 /* source link address */
 390     word        ak_acknum[2];           /* acknowledgement numbers */
 391   };
 392
 393 struct minackmsg                        /* minimum acknowledgement message */
 394   {
 395     byte        mk_flags;               /* message flags */
 396     word        mk_dst;                 /* destination link address */
 397     word        mk_src;                 /* source link address */
 398     word        mk_acknum;              /* acknowledgement number */
 399   };
 400
 401 struct ciackmsg                         /* connect acknowledgement message */
 402   {
 403     byte        ck_flags;               /* message flags */
 404     word        ck_dst;                 /* destination link address */
 405   };
 406
 407 struct cimsg                            /* connect initiate message */
 408   {
 409     byte        ci_flags;               /* message flags */
 410     word        ci_dst;                 /* destination link address (0) */
 411     word        ci_src;                 /* source link address */
 412     byte        ci_services;            /* requested services */
 413     byte        ci_info;                /* information */
 414     word        ci_segsize;             /* maximum segment size */
 415   };
 416
 417 struct ccmsg                            /* connect confirm message */
 418   {
 419     byte        cc_flags;               /* message flags */
 420     word        cc_dst;                 /* destination link address */
 421     word        cc_src;                 /* source link address */
 422     byte        cc_services;            /* requested services */
 423     byte        cc_info;                /* information */
 424     word        cc_segsize;             /* maximum segment size */
 425     byte        cc_optlen;              /* optional data length */
 426   };
 427
 428 struct cnmsg                            /* generic connect message */
 429   {
 430     byte        cn_flags;               /* message flags */
 431     word        cn_dst;                 /* destination link address */
 432     word        cn_src;                 /* source link address */
 433     byte        cn_services;            /* requested services */
 434     byte        cn_info;                /* information */
 435     word        cn_segsize;             /* maximum segment size */
 436   };
 437
 438 struct dimsg                            /* disconnect initiate message */
 439   {
 440     byte        di_flags;               /* message flags */
 441     word        di_dst;                 /* destination link address */
 442     word        di_src;                 /* source link address */
 443     word        di_reason;              /* reason code */
 444     byte        di_optlen;              /* optional data length */
 445   };
 446
 447 struct dcmsg                            /* disconnect confirm message */
 448   {
 449     byte        dc_flags;               /* message flags */
 450     word        dc_dst;                 /* destination link address */
 451     word        dc_src;                 /* source link address */
 452     word        dc_reason;              /* reason code */
 453   };