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//-------------------------------------------------------------------------- 
// IP Stack Utility Programs 
//-------------------------------------------------------------------------- 
// NATIF.H 
// 
// Interface to the tools available in NETTOOL.LIB 
// 
// Copyright 1999, 2000 by Texas Instruments Inc. 
//------------------------------------------------------------------------- 
 
#ifndef _NATIF_H_ 
#define _NATIF_H_ 
 
// 
// DHCP NAT SERVICE 
// 
 
// 
// NAT Parameter Structure 
// 
typedef struct _ntparam_nat { 
        IPN     IPVirt;         // Virtual IP address 
        IPN     IPMask;         // Mask of virtual subnet 
        uint    MTU;            // NAT packet MTU (normally 1500 or 1492) 
        } NTPARAM_NAT; 
 
// 
// NATOpen() 
// 
// This function is called to initiate NAT control of the system. The 
// interface specified to NAT is the IF of the EXTERNAL network. 
// 
// Compatible with NT_MODE_IFIDX only. 
// 
// Returns a pseudo-HANDLE of "1" on success, or NULL on failure. The 
// pseudo-HANDLE can used with NATClose(). 
// 
_extern HANDLE NATOpen( NTARGS *pNTA, NTPARAM_NAT *pNTP ); 
 
// 
// NATClose() 
// 
// This function terminates NAT control 
// 
_extern void NATClose( HANDLE hNAT ); 
 
#endif