The Tcpdump Group git mirrors - tcpdump/blob - decnet.h

   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
  22 #ifndef WIN32
  23 typedef uint8_t byte[1];                /* single byte field */
  24 #else
  25 /*
  26  * the keyword 'byte' generates conflicts in Windows
  27  */
  28 typedef unsigned char Byte[1];          /* single byte field */
  29 #define byte Byte
  30 #endif /* WIN32 */
  31 typedef uint8_t word[2];                /* 2 byte field */
  32 typedef uint8_t longword[4];            /* 4 bytes field */
  33
  34 /*
  35  * Definitions for DECNET Phase IV protocol headers
  36  */
  37 union etheraddress {
  38         uint8_t   dne_addr[6];          /* full ethernet address */
  39         struct {
  40                 uint8_t dne_hiord[4];   /* DECnet HIORD prefix */
  41                 uint8_t dne_nodeaddr[2]; /* DECnet node address */
  42         } dne_remote;
  43 };
  44
  45 typedef union etheraddress etheraddr;   /* Ethernet address */
  46
  47 #define HIORD 0x000400aa                /* high 32-bits of address (swapped) */
  48
  49 #define AREAMASK        0176000         /* mask for area field */
  50 #define AREASHIFT       10              /* bit-offset for area field */
  51 #define NODEMASK        01777           /* mask for node address field */
  52
  53 #define DN_MAXADDL      20              /* max size of DECnet address */
  54 struct dn_naddr {
  55         uint16_t        a_len;          /* length of address */
  56         uint8_t a_addr[DN_MAXADDL]; /* address as bytes */
  57 };
  58
  59 /*
  60  * Define long and short header formats.
  61  */
  62 struct shorthdr
  63   {
  64     byte        sh_flags;               /* route flags */
  65     word        sh_dst;                 /* destination node address */
  66     word        sh_src;                 /* source node address */
  67     byte        sh_visits;              /* visit count */
  68   };
  69
  70 struct longhdr
  71   {
  72     byte        lg_flags;               /* route flags */
  73     byte        lg_darea;               /* destination area (reserved) */
  74     byte        lg_dsarea;              /* destination subarea (reserved) */
  75     etheraddr   lg_dst;                 /* destination id */
  76     byte        lg_sarea;               /* source area (reserved) */
  77     byte        lg_ssarea;              /* source subarea (reserved) */
  78     etheraddr   lg_src;                 /* source id */
  79     byte        lg_nextl2;              /* next level 2 router (reserved) */
  80     byte        lg_visits;              /* visit count */
  81     byte        lg_service;             /* service class (reserved) */
  82     byte        lg_pt;                  /* protocol type (reserved) */
  83   };
  84
  85 union routehdr
  86   {
  87     struct shorthdr rh_short;           /* short route header */
  88     struct longhdr rh_long;             /* long route header */
  89   };
  90
  91 /*
  92  * Define the values of various fields in the protocol messages.
  93  *
  94  * 1. Data packet formats.
  95  */
  96 #define RMF_MASK        7               /* mask for message type */
  97 #define RMF_SHORT       2               /* short message format */
  98 #define RMF_LONG        6               /* long message format */
  99 #ifndef RMF_RQR
 100 #define RMF_RQR         010             /* request return to sender */
 101 #define RMF_RTS         020             /* returning to sender */
 102 #define RMF_IE          040             /* intra-ethernet packet */
 103 #endif /* RMR_RQR */
 104 #define RMF_FVER        0100            /* future version flag */
 105 #define RMF_PAD         0200            /* pad field */
 106 #define RMF_PADMASK     0177            /* pad field mask */
 107
 108 #define VIS_MASK        077             /* visit field mask */
 109
 110 /*
 111  * 2. Control packet formats.
 112  */
 113 #define RMF_CTLMASK     017             /* mask for message type */
 114 #define RMF_CTLMSG      01              /* control message indicator */
 115 #define RMF_INIT        01              /* initialization message */
 116 #define RMF_VER         03              /* verification message */
 117 #define RMF_TEST        05              /* hello and test message */
 118 #define RMF_L1ROUT      07              /* level 1 routing message */
 119 #define RMF_L2ROUT      011             /* level 2 routing message */
 120 #define RMF_RHELLO      013             /* router hello message */
 121 #define RMF_EHELLO      015             /* endnode hello message */
 122
 123 #define TI_L2ROUT       01              /* level 2 router */
 124 #define TI_L1ROUT       02              /* level 1 router */
 125 #define TI_ENDNODE      03              /* endnode */
 126 #define TI_VERIF        04              /* verification required */
 127 #define TI_BLOCK        010             /* blocking requested */
 128
 129 #define VE_VERS         2               /* version number (2) */
 130 #define VE_ECO          0               /* ECO number */
 131 #define VE_UECO         0               /* user ECO number (0) */
 132
 133 #define P3_VERS         1               /* phase III version number (1) */
 134 #define P3_ECO          3               /* ECO number (3) */
 135 #define P3_UECO         0               /* user ECO number (0) */
 136
 137 #define II_L2ROUT       01              /* level 2 router */
 138 #define II_L1ROUT       02              /* level 1 router */
 139 #define II_ENDNODE      03              /* endnode */
 140 #define II_VERIF        04              /* verification required */
 141 #define II_NOMCAST      040             /* no multicast traffic accepted */
 142 #define II_BLOCK        0100            /* blocking requested */
 143 #define II_TYPEMASK     03              /* mask for node type */
 144
 145 #define TESTDATA        0252            /* test data bytes */
 146 #define TESTLEN         1               /* length of transmitted test data */
 147
 148 /*
 149  * Define control message formats.
 150  */
 151 struct initmsgIII                       /* phase III initialization message */
 152   {
 153     byte        inIII_flags;            /* route flags */
 154     word        inIII_src;              /* source node address */
 155     byte        inIII_info;             /* routing layer information */
 156     word        inIII_blksize;          /* maximum data link block size */
 157     byte        inIII_vers;             /* version number */
 158     byte        inIII_eco;              /* ECO number */
 159     byte        inIII_ueco;             /* user ECO number */
 160     byte        inIII_rsvd;             /* reserved image field */
 161   };
 162
 163 struct initmsg                          /* initialization message */
 164   {
 165     byte        in_flags;               /* route flags */
 166     word        in_src;                 /* source node address */
 167     byte        in_info;                /* routing layer information */
 168     word        in_blksize;             /* maximum data link block size */
 169     byte        in_vers;                /* version number */
 170     byte        in_eco;                 /* ECO number */
 171     byte        in_ueco;                /* user ECO number */
 172     word        in_hello;               /* hello timer */
 173     byte        in_rsvd;                /* reserved image field */
 174   };
 175
 176 struct verifmsg                         /* verification message */
 177   {
 178     byte        ve_flags;               /* route flags */
 179     word        ve_src;                 /* source node address */
 180     byte        ve_fcnval;              /* function value image field */
 181   };
 182
 183 struct testmsg                          /* hello and test message */
 184   {
 185     byte        te_flags;               /* route flags */
 186     word        te_src;                 /* source node address */
 187     byte        te_data;                /* test data image field */
 188   };
 189
 190 struct l1rout                           /* level 1 routing message */
 191   {
 192     byte        r1_flags;               /* route flags */
 193     word        r1_src;                 /* source node address */
 194     byte        r1_rsvd;                /* reserved field */
 195   };
 196
 197 struct l2rout                           /* level 2 routing message */
 198   {
 199     byte        r2_flags;               /* route flags */
 200     word        r2_src;                 /* source node address */
 201     byte        r2_rsvd;                /* reserved field */
 202   };
 203
 204 struct rhellomsg                        /* router hello message */
 205   {
 206     byte        rh_flags;               /* route flags */
 207     byte        rh_vers;                /* version number */
 208     byte        rh_eco;                 /* ECO number */
 209     byte        rh_ueco;                /* user ECO number */
 210     etheraddr   rh_src;                 /* source id */
 211     byte        rh_info;                /* routing layer information */
 212     word        rh_blksize;             /* maximum data link block size */
 213     byte        rh_priority;            /* router's priority */
 214     byte        rh_area;                /* reserved */
 215     word        rh_hello;               /* hello timer */
 216     byte        rh_mpd;                 /* reserved */
 217   };
 218
 219 struct ehellomsg                        /* endnode hello message */
 220   {
 221     byte        eh_flags;               /* route flags */
 222     byte        eh_vers;                /* version number */
 223     byte        eh_eco;                 /* ECO number */
 224     byte        eh_ueco;                /* user ECO number */
 225     etheraddr   eh_src;                 /* source id */
 226     byte        eh_info;                /* routing layer information */
 227     word        eh_blksize;             /* maximum data link block size */
 228     byte        eh_area;                /* area (reserved) */
 229     byte        eh_seed[8];             /* verification seed */
 230     etheraddr   eh_router;              /* designated router */
 231     word        eh_hello;               /* hello timer */
 232     byte        eh_mpd;                 /* (reserved) */
 233     byte        eh_data;                /* test data image field */
 234   };
 235
 236 union controlmsg
 237   {
 238     struct initmsg      cm_init;        /* initialization message */
 239     struct verifmsg     cm_ver;         /* verification message */
 240     struct testmsg      cm_test;        /* hello and test message */
 241     struct l1rout       cm_l1rou;       /* level 1 routing message */
 242     struct l2rout       cm_l2rout;      /* level 2 routing message */
 243     struct rhellomsg    cm_rhello;      /* router hello message */
 244     struct ehellomsg    cm_ehello;      /* endnode hello message */
 245   };
 246
 247 /* Macros for decoding routing-info fields */
 248 #define RI_COST(x)      ((x)&0777)
 249 #define RI_HOPS(x)      (((x)>>10)&037)
 250 \f
 251 /*
 252  * NSP protocol fields and values.
 253  */
 254
 255 #define NSP_TYPEMASK 014                /* mask to isolate type code */
 256 #define NSP_SUBMASK 0160                /* mask to isolate subtype code */
 257 #define NSP_SUBSHFT 4                   /* shift to move subtype code */
 258
 259 #define MFT_DATA 0                      /* data message */
 260 #define MFT_ACK  04                     /* acknowledgement message */
 261 #define MFT_CTL  010                    /* control message */
 262
 263 #define MFS_ILS  020                    /* data or I/LS indicator */
 264 #define MFS_BOM  040                    /* beginning of message (data) */
 265 #define MFS_MOM  0                      /* middle of message (data) */
 266 #define MFS_EOM  0100                   /* end of message (data) */
 267 #define MFS_INT  040                    /* interrupt message */
 268
 269 #define MFS_DACK 0                      /* data acknowledgement */
 270 #define MFS_IACK 020                    /* I/LS acknowledgement */
 271 #define MFS_CACK 040                    /* connect acknowledgement */
 272
 273 #define MFS_NOP  0                      /* no operation */
 274 #define MFS_CI   020                    /* connect initiate */
 275 #define MFS_CC   040                    /* connect confirm */
 276 #define MFS_DI   060                    /* disconnect initiate */
 277 #define MFS_DC   0100                   /* disconnect confirm */
 278 #define MFS_RCI  0140                   /* retransmitted connect initiate */
 279
 280 #define SGQ_ACK  0100000                /* ack */
 281 #define SGQ_NAK  0110000                /* negative ack */
 282 #define SGQ_OACK 0120000                /* other channel ack */
 283 #define SGQ_ONAK 0130000                /* other channel negative ack */
 284 #define SGQ_MASK 07777                  /* mask to isolate seq # */
 285 #define SGQ_OTHER 020000                /* other channel qualifier */
 286 #define SGQ_DELAY 010000                /* ack delay flag */
 287
 288 #define SGQ_EOM  0100000                /* pseudo flag for end-of-message */
 289
 290 #define LSM_MASK 03                     /* mask for modifier field */
 291 #define LSM_NOCHANGE 0                  /* no change */
 292 #define LSM_DONOTSEND 1                 /* do not send data */
 293 #define LSM_SEND 2                      /* send data */
 294
 295 #define LSI_MASK 014                    /* mask for interpretation field */
 296 #define LSI_DATA 0                      /* data segment or message count */
 297 #define LSI_INTR 4                      /* interrupt request count */
 298 #define LSI_INTM 0377                   /* funny marker for int. message */
 299
 300 #define COS_MASK 014                    /* mask for flow control field */
 301 #define COS_NONE 0                      /* no flow control */
 302 #define COS_SEGMENT 04                  /* segment flow control */
 303 #define COS_MESSAGE 010                 /* message flow control */
 304 #define COS_CRYPTSER 020                /* cryptographic services requested */
 305 #define COS_DEFAULT 1                   /* default value for field */
 306
 307 #define COI_MASK 3                      /* mask for version field */
 308 #define COI_32 0                        /* version 3.2 */
 309 #define COI_31 1                        /* version 3.1 */
 310 #define COI_40 2                        /* version 4.0 */
 311 #define COI_41 3                        /* version 4.1 */
 312
 313 #define MNU_MASK 140                    /* mask for session control version */
 314 #define MNU_10 000                              /* session V1.0 */
 315 #define MNU_20 040                              /* session V2.0 */
 316 #define MNU_ACCESS 1                    /* access control present */
 317 #define MNU_USRDATA 2                   /* user data field present */
 318 #define MNU_INVKPROXY 4                 /* invoke proxy field present */
 319 #define MNU_UICPROXY 8                  /* use uic-based proxy */
 320
 321 #define DC_NORESOURCES 1                /* no resource reason code */
 322 #define DC_NOLINK 41                    /* no link terminate reason code */
 323 #define DC_COMPLETE 42                  /* disconnect complete reason code */
 324
 325 #define DI_NOERROR 0                    /* user disconnect */
 326 #define DI_SHUT 3                       /* node is shutting down */
 327 #define DI_NOUSER 4                     /* destination end user does not exist */
 328 #define DI_INVDEST 5                    /* invalid end user destination */
 329 #define DI_REMRESRC 6                   /* insufficient remote resources */
 330 #define DI_TPA 8                        /* third party abort */
 331 #define DI_PROTOCOL 7                   /* protocol error discovered */
 332 #define DI_ABORT 9                      /* user abort */
 333 #define DI_LOCALRESRC 32                /* insufficient local resources */
 334 #define DI_REMUSERRESRC 33              /* insufficient remote user resources */
 335 #define DI_BADACCESS 34                 /* bad access control information */
 336 #define DI_BADACCNT 36                  /* bad ACCOUNT information */
 337 #define DI_CONNECTABORT 38              /* connect request cancelled */
 338 #define DI_TIMEDOUT 38                  /* remote node or user crashed */
 339 #define DI_UNREACHABLE 39               /* local timers expired due to ... */
 340 #define DI_BADIMAGE 43                  /* bad image data in connect */
 341 #define DI_SERVMISMATCH 54              /* cryptographic service mismatch */
 342
 343 #define UC_OBJREJECT 0                  /* object rejected connect */
 344 #define UC_USERDISCONNECT 0             /* user disconnect */
 345 #define UC_RESOURCES 1                  /* insufficient resources (local or remote) */
 346 #define UC_NOSUCHNODE 2                 /* unrecognized node name */
 347 #define UC_REMOTESHUT 3                 /* remote node shutting down */
 348 #define UC_NOSUCHOBJ 4                  /* unrecognized object */
 349 #define UC_INVOBJFORMAT 5               /* invalid object name format */
 350 #define UC_OBJTOOBUSY 6                 /* object too busy */
 351 #define UC_NETWORKABORT 8               /* network abort */
 352 #define UC_USERABORT 9                  /* user abort */
 353 #define UC_INVNODEFORMAT 10             /* invalid node name format */
 354 #define UC_LOCALSHUT 11                 /* local node shutting down */
 355 #define UC_ACCESSREJECT 34              /* invalid access control information */
 356 #define UC_NORESPONSE 38                /* no response from object */
 357 #define UC_UNREACHABLE 39               /* node unreachable */
 358
 359 /*
 360  * NSP message formats.
 361  */
 362 struct nsphdr                           /* general nsp header */
 363   {
 364     byte        nh_flags;               /* message flags */
 365     word        nh_dst;                 /* destination link address */
 366     word        nh_src;                 /* source link address */
 367   };
 368
 369 struct seghdr                           /* data segment header */
 370   {
 371     byte        sh_flags;               /* message flags */
 372     word        sh_dst;                 /* destination link address */
 373     word        sh_src;                 /* source link address */
 374     word        sh_seq[3];              /* sequence numbers */
 375   };
 376
 377 struct minseghdr                        /* minimum data segment header */
 378   {
 379     byte        ms_flags;               /* message flags */
 380     word        ms_dst;                 /* destination link address */
 381     word        ms_src;                 /* source link address */
 382     word        ms_seq;                 /* sequence number */
 383   };
 384
 385 struct lsmsg                            /* link service message (after hdr) */
 386   {
 387     byte        ls_lsflags;             /* link service flags */
 388     byte        ls_fcval;               /* flow control value */
 389   };
 390
 391 struct ackmsg                           /* acknowledgement message */
 392   {
 393     byte        ak_flags;               /* message flags */
 394     word        ak_dst;                 /* destination link address */
 395     word        ak_src;                 /* source link address */
 396     word        ak_acknum[2];           /* acknowledgement numbers */
 397   };
 398
 399 struct minackmsg                        /* minimum acknowledgement message */
 400   {
 401     byte        mk_flags;               /* message flags */
 402     word        mk_dst;                 /* destination link address */
 403     word        mk_src;                 /* source link address */
 404     word        mk_acknum;              /* acknowledgement number */
 405   };
 406
 407 struct ciackmsg                         /* connect acknowledgement message */
 408   {
 409     byte        ck_flags;               /* message flags */
 410     word        ck_dst;                 /* destination link address */
 411   };
 412
 413 struct cimsg                            /* connect initiate message */
 414   {
 415     byte        ci_flags;               /* message flags */
 416     word        ci_dst;                 /* destination link address (0) */
 417     word        ci_src;                 /* source link address */
 418     byte        ci_services;            /* requested services */
 419     byte        ci_info;                /* information */
 420     word        ci_segsize;             /* maximum segment size */
 421   };
 422
 423 struct ccmsg                            /* connect confirm message */
 424   {
 425     byte        cc_flags;               /* message flags */
 426     word        cc_dst;                 /* destination link address */
 427     word        cc_src;                 /* source link address */
 428     byte        cc_services;            /* requested services */
 429     byte        cc_info;                /* information */
 430     word        cc_segsize;             /* maximum segment size */
 431     byte        cc_optlen;              /* optional data length */
 432   };
 433
 434 struct cnmsg                            /* generic connect message */
 435   {
 436     byte        cn_flags;               /* message flags */
 437     word        cn_dst;                 /* destination link address */
 438     word        cn_src;                 /* source link address */
 439     byte        cn_services;            /* requested services */
 440     byte        cn_info;                /* information */
 441     word        cn_segsize;             /* maximum segment size */
 442   };
 443
 444 struct dimsg                            /* disconnect initiate message */
 445   {
 446     byte        di_flags;               /* message flags */
 447     word        di_dst;                 /* destination link address */
 448     word        di_src;                 /* source link address */
 449     word        di_reason;              /* reason code */
 450     byte        di_optlen;              /* optional data length */
 451   };
 452
 453 struct dcmsg                            /* disconnect confirm message */
 454   {
 455     byte        dc_flags;               /* message flags */
 456     word        dc_dst;                 /* destination link address */
 457     word        dc_src;                 /* source link address */
 458     word        dc_reason;              /* reason code */
 459   };