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Annotation of 43BSDReno/sys/netiso/tp_tpdu.h, revision 1.1

1.1     ! root        1: /***********************************************************
        !             2:                Copyright IBM Corporation 1987
        !             3: 
        !             4:                       All Rights Reserved
        !             5: 
        !             6: Permission to use, copy, modify, and distribute this software and its 
        !             7: documentation for any purpose and without fee is hereby granted, 
        !             8: provided that the above copyright notice appear in all copies and that
        !             9: both that copyright notice and this permission notice appear in 
        !            10: supporting documentation, and that the name of IBM not be
        !            11: used in advertising or publicity pertaining to distribution of the
        !            12: software without specific, written prior permission.  
        !            13: 
        !            14: IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
        !            15: ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
        !            16: IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
        !            17: ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
        !            18: WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
        !            19: ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
        !            20: SOFTWARE.
        !            21: 
        !            22: ******************************************************************/
        !            23: 
        !            24: /*
        !            25:  * ARGO Project, Computer Sciences Dept., University of Wisconsin - Madison
        !            26:  */
        !            27: /* 
        !            28:  * ARGO TP
        !            29:  *
        !            30:  * $Header: tp_tpdu.h,v 4.4 88/07/26 16:45:40 nhall Exp $
        !            31:  * $Source: /usr/argo/sys/netiso/RCS/tp_tpdu.h,v $
        !            32:  *     @(#)tp_tpdu.h   7.3 (Berkeley) 8/29/89 *
        !            33:  *
        !            34:  * This ghastly set of macros makes it possible to
        !            35:  * refer to tpdu structures without going mad.
        !            36:  */
        !            37: 
        !            38: #ifndef __TP_TPDU__
        !            39: #define __TP_TPDU__
        !            40: 
        !            41: #ifndef BYTE_ORDER
        !            42: /*
        !            43:  * Definitions for byte order,
        !            44:  * according to byte significance from low address to high.
        !            45:  */
        !            46: #define        LITTLE_ENDIAN   1234    /* least-significant byte first (vax) */
        !            47: #define        BIG_ENDIAN      4321    /* most-significant byte first (IBM, net) */
        !            48: #define        PDP_ENDIAN      3412    /* LSB first in word, MSW first in long (pdp) */
        !            49: 
        !            50: #ifdef vax
        !            51: #define        BYTE_ORDER      LITTLE_ENDIAN
        !            52: #else
        !            53: #define        BYTE_ORDER      BIG_ENDIAN      /* mc68000, tahoe, most others */
        !            54: #endif
        !            55: #endif BYTE_ORDER
        !            56: 
        !            57: /* This much of a tpdu is the same for all types of tpdus  (except
        !            58:  * DT tpdus in class 0; their exceptions are handled by the data
        !            59:  * structure below
        !            60:  */
        !            61: struct tpdu_fixed {
        !            62:        u_char                  _tpduf_li:8,            /* length indicator */
        !            63: #if BYTE_ORDER == LITTLE_ENDIAN
        !            64:                                _tpduf_cdt: 4,          /* credit */
        !            65:                                _tpduf_type: 4;         /* type of tpdu (DT, CR, etc.) */
        !            66: #endif
        !            67: #if BYTE_ORDER == BIG_ENDIAN
        !            68:                                _tpduf_type: 4,         /* type of tpdu (DT, CR, etc.) */
        !            69:                                _tpduf_cdt: 4;          /* credit */
        !            70: #endif
        !            71:        u_short                 _tpduf_dref;            /* destination ref; not in DT in class 0 */
        !            72: };
        !            73: 
        !            74: #define tpdu_li _tpduf._tpduf_li
        !            75: #define tpdu_type _tpduf._tpduf_type
        !            76: #define tpdu_cdt _tpduf._tpduf_cdt
        !            77: #define tpdu_dref _tpduf._tpduf_dref
        !            78:                        
        !            79: struct tp0du {
        !            80:        u_char          _tp0_li,
        !            81:                                _tp0_cdt_type,          /* same as in tpdu_fixed */
        !            82: #if BYTE_ORDER == BIG_ENDIAN
        !            83:                                _tp0_eot: 1,            /* eot */
        !            84:                                _tp0_mbz: 7,            /* must be zero */
        !            85: #endif
        !            86: #if BYTE_ORDER == LITTLE_ENDIAN
        !            87:                                _tp0_mbz: 7,            /* must be zero */
        !            88:                                _tp0_eot: 1,            /* eot */
        !            89: #endif
        !            90:                                _tp0_notused: 8;        /* data begins on this octet */
        !            91: };
        !            92: 
        !            93: #define tp0du_eot _tp0_eot
        !            94: #define tp0du_mbz _tp0_mbz
        !            95:                        
        !            96: /*
        !            97:  * This is used when the extended format seqence numbers are
        !            98:  * being sent and received. 
        !            99:  */
        !           100:                                /*
        !           101:                                 * the seqeot field is an int that overlays the seq
        !           102:                                 * and eot fields, this allows the htonl operation
        !           103:                                 * to be applied to the entire 32 bit quantity, and
        !           104:                                 * simplifies the structure definitions.
        !           105:                                 */
        !           106: union seq_type {
        !           107:        struct {
        !           108: #if BYTE_ORDER == BIG_ENDIAN
        !           109:                unsigned int    st_eot:1,               /* end-of-tsdu */
        !           110:                                                st_seq:31;              /* 31 bit sequence number */
        !           111: #endif
        !           112: #if BYTE_ORDER == LITTLE_ENDIAN
        !           113:                unsigned int    st_seq:31,              /* 31 bit sequence number */
        !           114:                                                st_eot:1;               /* end-of-tsdu */
        !           115: #endif
        !           116:        } st;
        !           117:        unsigned int s_seqeot;
        !           118: #define s_eot  st.st_eot
        !           119: #define s_seq  st.st_seq
        !           120: };
        !           121: 
        !           122: /* Then most tpdu types have a portion that is always present but
        !           123:  * differs among the tpdu types :
        !           124:  */
        !           125: union  tpdu_fixed_rest {
        !           126: 
        !           127:                struct {
        !           128:                        u_short         _tpdufr_sref,           /* source reference */
        !           129: #if BYTE_ORDER == BIG_ENDIAN
        !           130:                                                _tpdufr_class: 4,       /* class [ ISO 8073 13.3.3.e ] */
        !           131:                                                _tpdufr_opt: 4,         /* options [ ISO 8073 13.3.3.e ] */
        !           132: #endif
        !           133: #if BYTE_ORDER == LITTLE_ENDIAN
        !           134:                                                _tpdufr_opt: 4,         /* options [ ISO 8073 13.3.3.e ] */
        !           135:                                                _tpdufr_class: 4,       /* class [ ISO 8073 13.3.3.e ] */
        !           136: #endif
        !           137:                                                _tpdufr_xx: 8;          /* unused */
        !           138:                } CRCC;
        !           139: 
        !           140: #define tpdu_CRli _tpduf._tpduf_li
        !           141: #define tpdu_CRtype _tpduf._tpduf_type
        !           142: #define tpdu_CRcdt _tpduf._tpduf_cdt
        !           143: #define tpdu_CRdref_0 _tpduf._tpduf_dref
        !           144: #define tpdu_CRsref _tpdufr.CRCC._tpdufr_sref
        !           145: #define tpdu_sref _tpdufr.CRCC._tpdufr_sref
        !           146: #define tpdu_CRclass _tpdufr.CRCC._tpdufr_class
        !           147: #define tpdu_CRoptions _tpdufr.CRCC._tpdufr_opt
        !           148: 
        !           149: #define tpdu_CCli _tpduf._tpduf_li
        !           150: #define tpdu_CCtype _tpduf._tpduf_type
        !           151: #define tpdu_CCcdt _tpduf._tpduf_cdt
        !           152: #define tpdu_CCdref _tpduf._tpduf_dref
        !           153: #define tpdu_CCsref _tpdufr.CRCC._tpdufr_sref
        !           154: #define tpdu_CCclass _tpdufr.CRCC._tpdufr_class
        !           155: #define tpdu_CCoptions _tpdufr.CRCC._tpdufr_opt
        !           156: 
        !           157: /* OPTIONS and ADDL OPTIONS bits */
        !           158: #define TPO_USE_EFC                            0x1
        !           159: #define TPO_XTD_FMT                            0x2
        !           160: #define TPAO_USE_TXPD                  0x1
        !           161: #define TPAO_NO_CSUM                   0x2
        !           162: #define TPAO_USE_RCC                   0x4
        !           163: #define TPAO_USE_NXPD                  0x8
        !           164: 
        !           165:                struct {
        !           166:                        unsigned short _tpdufr_sref;    /* source reference */
        !           167:                        unsigned char  _tpdufr_reason;  /* [ ISO 8073 13.5.3.d ] */
        !           168:                } DR;
        !           169: #define tpdu_DRli _tpduf._tpduf_li
        !           170: #define tpdu_DRtype _tpduf._tpduf_type
        !           171: #define tpdu_DRdref _tpduf._tpduf_dref
        !           172: #define tpdu_DRsref _tpdufr.DR._tpdufr_sref
        !           173: #define tpdu_DRreason _tpdufr.DR._tpdufr_reason
        !           174: 
        !           175:                unsigned short _tpdufr_sref;    /* source reference */
        !           176: 
        !           177: #define tpdu_DCli _tpduf._tpduf_li
        !           178: #define tpdu_DCtype _tpduf._tpduf_type
        !           179: #define tpdu_DCdref _tpduf._tpduf_dref
        !           180: #define tpdu_DCsref _tpdufr._tpdufr_sref
        !           181: 
        !           182:                struct {
        !           183: #if BYTE_ORDER == BIG_ENDIAN
        !           184:                        unsigned char _tpdufr_eot:1,    /* end-of-tsdu */
        !           185:                                                  _tpdufr_seq:7;        /* 7 bit sequence number */
        !           186: #endif
        !           187: #if BYTE_ORDER == LITTLE_ENDIAN
        !           188:                        unsigned char   _tpdufr_seq:7,  /* 7 bit sequence number */
        !           189:                                                        _tpdufr_eot:1;  /* end-of-tsdu */
        !           190: #endif
        !           191:                }SEQEOT;
        !           192:                struct {
        !           193: #if BYTE_ORDER == BIG_ENDIAN
        !           194:                        unsigned int    _tpdufr_Xeot:1,         /* end-of-tsdu */
        !           195:                                                        _tpdufr_Xseq:31;        /* 31 bit sequence number */
        !           196: #endif
        !           197: #if BYTE_ORDER == LITTLE_ENDIAN
        !           198:                        unsigned int    _tpdufr_Xseq:31,        /* 31 bit sequence number */
        !           199:                                                        _tpdufr_Xeot:1;         /* end-of-tsdu */
        !           200: #endif
        !           201:                }SEQEOT31;
        !           202:                unsigned int _tpdufr_Xseqeot;
        !           203: #define tpdu_seqeotX _tpdufr._tpdufr_Xseqeot
        !           204: 
        !           205: #define tpdu_DTli _tpduf._tpduf_li
        !           206: #define tpdu_DTtype _tpduf._tpduf_type
        !           207: #define tpdu_DTdref _tpduf._tpduf_dref
        !           208: #define tpdu_DTseq _tpdufr.SEQEOT._tpdufr_seq
        !           209: #define tpdu_DTeot _tpdufr.SEQEOT._tpdufr_eot
        !           210: #define tpdu_DTseqX _tpdufr.SEQEOT31._tpdufr_Xseq
        !           211: #define tpdu_DTeotX _tpdufr.SEQEOT31._tpdufr_Xeot
        !           212: 
        !           213: #define tpdu_XPDli _tpduf._tpduf_li
        !           214: #define tpdu_XPDtype _tpduf._tpduf_type
        !           215: #define tpdu_XPDdref _tpduf._tpduf_dref
        !           216: #define tpdu_XPDseq _tpdufr.SEQEOT._tpdufr_seq
        !           217: #define tpdu_XPDeot _tpdufr.SEQEOT._tpdufr_eot
        !           218: #define tpdu_XPDseqX _tpdufr.SEQEOT31._tpdufr_Xseq
        !           219: #define tpdu_XPDeotX _tpdufr.SEQEOT31._tpdufr_Xeot
        !           220: 
        !           221:                struct {
        !           222: #if BYTE_ORDER == BIG_ENDIAN
        !           223:                        unsigned        _tpdufr_yrseq0:1,       /* always zero */
        !           224:                                                _tpdufr_yrseq:31;       /* [ ISO 8073 13.9.3.d ] */
        !           225: #endif
        !           226: #if BYTE_ORDER == LITTLE_ENDIAN
        !           227:                        unsigned        _tpdufr_yrseq:31,       /* [ ISO 8073 13.9.3.d ] */
        !           228:                                                _tpdufr_yrseq0:1;       /* always zero */
        !           229: #endif
        !           230:                        unsigned short _tpdufr_cdt; /* [ ISO 8073 13.9.3.b ] */
        !           231:                } AK31;
        !           232: 
        !           233: #define tpdu_AKli _tpduf._tpduf_li
        !           234: #define tpdu_AKtype _tpduf._tpduf_type
        !           235: #define tpdu_AKdref _tpduf._tpduf_dref
        !           236: #define tpdu_AKseq _tpdufr.SEQEOT._tpdufr_seq
        !           237: #define tpdu_AKseqX _tpdufr.AK31._tpdufr_yrseq
        !           238: /* location of cdt depends on size of seq. numbers */
        !           239: #define tpdu_AKcdt _tpduf._tpduf_cdt
        !           240: #define tpdu_AKcdtX _tpdufr.AK31._tpdufr_cdt
        !           241: 
        !           242: #define tpdu_XAKli _tpduf._tpduf_li
        !           243: #define tpdu_XAKtype _tpduf._tpduf_type
        !           244: #define tpdu_XAKdref _tpduf._tpduf_dref
        !           245: #define tpdu_XAKseq _tpdufr.SEQEOT._tpdufr_seq
        !           246: #define tpdu_XAKseqX _tpdufr.SEQEOT31._tpdufr_Xseq
        !           247: 
        !           248:                unsigned char _tpdu_ERreason;   /* [ ISO 8073 13.12.3.c ] */
        !           249: 
        !           250: #define tpdu_ERli _tpduf._tpduf_li
        !           251: #define tpdu_ERtype _tpduf._tpduf_type
        !           252: #define tpdu_ERdref _tpduf._tpduf_dref
        !           253: #define tpdu_ERreason _tpdufr._tpdu_ERreason
        !           254: 
        !           255: };
        !           256: 
        !           257: struct tpdu {
        !           258:        struct  tpdu_fixed              _tpduf;
        !           259:        union   tpdu_fixed_rest _tpdufr;
        !           260: };
        !           261: 
        !           262: #endif __TP_TPDU__

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