88 lines
3.4 KiB
C
88 lines
3.4 KiB
C
|
|
//
|
|
// The LLC struct in the Link Data :
|
|
//
|
|
typdef union _LLC_HDR {
|
|
struct _LLC_I {
|
|
// C compilers should allocate the bits from lo to high
|
|
UINT fDSAP:7; // Destination SAP
|
|
UINT fGI:1; // Group / Indivual SAP
|
|
UINT fSSAP:7; // Source SAP
|
|
UINT fCr:1; // Command/Response
|
|
UINT fNs:7; // Transmitter send sequence number
|
|
UINT fType:1; // Set always to 0
|
|
UINT fNr:7; // Transmitter receive sequence number
|
|
UINT fPF:1; // Poll/Final Bit
|
|
} I; // Information frame
|
|
struct LLC_S {
|
|
UINT fDSAP:7; // Destination SAP
|
|
UINT fGI:1; // Group / Indivual SAP
|
|
UINT fSSAP:7; // Source SAP
|
|
UINT fCr:1; // Command/Response
|
|
UINT fCmd:8; // 0x80, 0x90, 0xA0, 0xB0
|
|
UINT fNr:7; // Transmitter receive sequence number
|
|
UINT fPF:1; // Poll/Final Bit
|
|
} S; // Supervisory frame
|
|
struct _LLC_U {
|
|
UINT fDSAP:7; // Destination SAP
|
|
UINT fGI:1; // Group / Indivual SAP
|
|
UINT fSSAP:7; // Source SAP
|
|
UINT fCr:1; // Command/Response
|
|
UINT fCmd1:3; // U- commands
|
|
UINT fPF:1; // Poll/Final Bit
|
|
UINT fCmd2:2; // U- commands
|
|
UINT fRes:2; // the topmouts bits are always 11
|
|
} U; // U command frame
|
|
struct _LLC_U_RAW {
|
|
UINT fDSAP:7; // Destination SAP
|
|
UINT fGI:1; // Group / Indivual SAP
|
|
UINT fSSAP:7; // Source SAP
|
|
UINT fCr:1; // Command/Response
|
|
UINT fCmd:8; // U- command (OR THIS!!!)
|
|
UINT fPadding:8; // this is already data
|
|
} rawU; // U command frame
|
|
//
|
|
struct _LLC_TYPE {
|
|
UINT fDSAP:7; // Destination SAP
|
|
UINT fGI:1; // Group / Indivual SAP
|
|
UINT fSSAP:7; // Source SAP
|
|
UINT fCr:1; // Command/Response
|
|
UINT fCmd:6; // the command or Ns bits
|
|
UINT fIsUFrame:1; // 1 => U, 0 => S frame (if not I frame)
|
|
UINT fIsNotI:1; // 0 => I frame
|
|
UINT fNr:7; // Transmitter receive seq number for I/S
|
|
UINT fPF:1; // Poll/Final Bit for I/S frames
|
|
} type;
|
|
ULONG ulRawLLc;
|
|
} LLC_HDR;
|
|
|
|
// ... somewhere in the link struct
|
|
LLCHDR xmtLcc; // the next transmitted frame, set to 0 when done
|
|
LLCHDR rvcLcc; // the last received frame
|
|
|
|
//
|
|
// The first index select the conditon, usActionId is returned if the
|
|
// condition is true, otherwise the next element is executed
|
|
typedef struct _COND_ACTS {
|
|
USHORT usConditionId;
|
|
USHORT usActionId;
|
|
} COND_ACTS, FAR *PCOND_ACTS;
|
|
|
|
//
|
|
// Structure includes all
|
|
typedef struct _FSM {
|
|
{
|
|
PCOND_ACTS pActionSelectIds; // condition-action pairs
|
|
PUSHORT pusActionPrimtives; // action primitive procedures
|
|
(USHORT *ActionSelect)(VOID *, PUSHORT, USHORT); // selects the action
|
|
(UINT *ExecPrimitives)(VOID *, PUSHORT, USHORT); // execs selected action
|
|
struct {
|
|
BOOL boolStateProcExists;
|
|
(UINT * StateProcedure)( VOID *pContext, USHORT );
|
|
PUSHORT pusInputs; // returns action selection id
|
|
#if sizeof(INT) == 4
|
|
INT iReserved; // makes element 16 bytes even if 32 bit word
|
|
#endif
|
|
} aStates[1]; // for all states
|
|
} FSM, FAR *PFSM;
|