sna_dlc.h

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/* sna_dlc.h */
/*
 * (C) Copyright Data Connection Limited 1989-1992.
 * (C) Copyright Microsoft Corporation 1991.
 * All Rights Reserved.
 */

#ifndef SNA_DLCH_INCLUDED
#pragma option push -b -a8 -pc -A- /*P_O_Push*/
#define SNA_DLCH_INCLUDED

#ifdef __cplusplus
extern "C" {
#endif

/*****************************************************************************/
/* Type definitions for message fields                                       */
/*****************************************************************************/
typedef signed long   LONGINT;
typedef signed short  INTEGER;
typedef signed char   SENUMERATED;
typedef signed short  LENUMERATED;
typedef unsigned char SUBRNG0;
typedef signed char   SUBRNG1;
typedef signed short  SUBRNG2;
typedef signed char   SET1;
typedef signed short  SET2;
typedef signed long   SET;
typedef SET2          THFORMAT;
#define VOID          void

/*****************************************************************************/
/* Element offset and length definitions                                     */
/*****************************************************************************/

#define SBCBELT1 1
#define SBCBELT3 13
#define SNANBEDA 268     /* LENGTH OF BUFFER ELEMENT */

/*****************************************************************************/
/* POINTERS TO STRUCTURES IN SBTBUFPT                                        */
/*****************************************************************************/
#ifdef WIN32_SUPPORT
#define PTRBFELT struct bufelt *
#define PTRBFHDR struct bufhdr *
#else
#define PTRBFELT struct bufelt far *
#define PTRBFHDR struct bufhdr far *
#endif

/*****************************************************************************/
/* SIZE OF BUFFER HEADER:                                                    */
/*   - 10 BYTES FOR FIXED PART                                               */
/*   - 16 BYTES FOR VARIANT PART                                             */
/*   - 2  BYTES FOR MATTERHORN EXTRA                                         */
/*****************************************************************************/
#define SVBUFSIZ 26


/*****************************************************************************/
/* OPEN MESSAGE TYPE DECLARATIONS                                            */
/*****************************************************************************/

     typedef struct tpophdr{                          /* OPEN MESSAGE HEADER */
                      CHAR     openqual;
#define REQU     1
#define RSPOK    2
#define RSPERR   3
#define CONFOK   4
#define CONFERR  5
                      CHAR     opentype;
#define LINK     16
#define STAT     17
                      CHAR     appltype;
                      CHAR     opluno;              /* INTERFACE USER NUMBER */
                      INTEGER  opresid;             /* INTERFACE USER ID     */
                      union {
                        struct {INTEGER  B03;
                                INTEGER  B04;
                                CHAR     B05;
                                CHAR     B06;}B02;
                        struct {INTEGER  B08;
                                INTEGER  B09;}B07;
                    }B01;}
#define icreditr B01.B02.B03           /* Initial Credit for Receive       */
#define icredits B01.B02.B04           /* Initial Credit for Send          */
#define opninfo1 B01.B02.B05           /* Negotiable BIND indicator (FMI)  */
#define opnpad1  B01.B02.B06           /* Open (SSCP) Force type           */
#define operr1   B01.B07.B08
#define ERINIFAIL    0x0001            /* Hardware initialisation failed   */
#define ERLKNOTOPEN  0x0003            /* Link not open                    */
#define ERSTATOPEN   0x0005            /* Station already open             */
#define ERNOCB       0x0006            /* Station control blocks depleted  */
#define ERINVINDX    0x0007            /* Invalid link index               */
#define ERMAXSTAT    0x0008            /* No more stations/link allowed    */
#define ERINVXID     0x0008            /* Invalid XID length               */
#define ERDIFADDR    0x0009            /* Address different from RQ-OP-STN */
#define ERLINKOPN    0x0009            /* Link already open                */
#define ERBADADDR    0x000A            /* Invalid DLC address              */
#define ERLCCERR     0x000A            /* LCC error; fatal hardware failure*/
#define ERBADINDX    0x000B            /* Invalid link index               */
#define ERBADOPN     0x000C            /* Open(LINK) has insufficient data */
#define ERCONNTO     0x000D            /* Link connection timeout          */
#define ERNORES      0x000E            /* No resources free                */
#define EROPNPND     0x0011            /* Close(LINK) arrived, Open pending*/
#define ERDUPREQ     0x0012            /* Duplicate request                */
#define ERNOINC      0x0A11            /* Can't accept incoming call       */
#define operr2   B01.B07.B09
                    TPOPHDR;


#define SNA          0
#define APPL         1
#define AMOD         2
#define DLC          3


/*****************************************************************************/
/* CLOSE MESSAGE TYPE DECLARATIONS                                           */
/*****************************************************************************/
     typedef struct tpclhdr{                         /* CLOSE MESSAGE HEADER */
                      CHAR     closqual;    /* Close message qualifier       */
                      CHAR     clstype;     /* Close message connection type */
                      CHAR     clsctl;      /* For Close(PLU) only           */
#define CLNORMAL 1
#define CLBIND   2
#define CLCFAERR 3
#define CLPUINAC 4
#define CLLUINAC 5
#define CLLNKERR 6
#define CLBFSHRT 7
#define CLRCVCHK 8
#define CLSLUTRM 9
                      CHAR     clspad1;
                      INTEGER  clspad2;
                      INTEGER  clserr1;
                      INTEGER  clserr2;
                    }TPCLHDR;



/*****************************************************************************/
/* DLC MESSAGE TYPE DECLARATIONS                                             */
/*****************************************************************************/



     typedef struct tpddhdr{                      /* DLC DATA MESSAGE HEADER */
                     INTEGER  ddpad1;   /* Pad                              */
                     INTEGER  ddpad2;   /* Pad                              */
                     INTEGER  ddpad3;   /* Pad                              */
                     THFORMAT ddth01;   /* TH Flags                         */
                     CHAR     dddaf;    /* DAF in the TH                    */
                     CHAR     ddoaf;    /* OAF in the TH                    */
                     INTEGER  ddseqno;  /* Sequence Number in the TH        */
                   }TPDDHDR;


     typedef struct tpdshdr{                      /* DLC DATA MESSAGE HEADER */
                     CHAR     dstype;    /* DLC-Status type                  */
#define SENDXID  0x1a
#define RESOURCE 0x04
#define OUTAGE   0x18
#define STNCTCTD 0x17
#define RQOPNSTN 0x16
                     CHAR     dsqual;    /* Status Qualifier                 */
                     /*BOOLEAN*/union {
                       /*TRUE*/struct {CHAR     B0N;
                                    CHAR     B0O;
                                    INTEGER  B0P;
                                    INTEGER  B0Q;