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/*-------------------------------------------------------------------------
*
* inet.h
* Declarations for operations on INET datatypes.
*
*
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: inet.h,v 1.9 2001/01/24 19:43:28 momjian Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef INET_H
#define INET_H
/*
* This is the internal storage format for IP addresses
* (both INET and CIDR datatypes):
*/
typedef struct
{
unsigned char family;
unsigned char bits;
unsigned char type;
union
{
unsigned int ipv4_addr; /* network byte order */
/* add IPV6 address type here */
} addr;
} inet_struct;
/*
* Both INET and CIDR addresses are represented within Postgres as varlena
* objects, ie, there is a varlena header (basically a length word) in front
* of the struct type depicted above.
*
* Although these types are variable-length, the maximum length
* is pretty short, so we make no provision for TOASTing them.
*/
typedef struct varlena inet;
/*
* This is the internal storage format for MAC addresses:
*/
typedef struct macaddr
{
unsigned char a;
unsigned char b;
unsigned char c;
unsigned char d;
unsigned char e;
unsigned char f;
} macaddr;
/*
* fmgr interface macros
*/
#define DatumGetInetP(X) ((inet *) DatumGetPointer(X))
#define InetPGetDatum(X) PointerGetDatum(X)
#define PG_GETARG_INET_P(n) DatumGetInetP(PG_GETARG_DATUM(n))
#define PG_RETURN_INET_P(x) return InetPGetDatum(x)
/* macaddr is a fixed-length pass-by-reference datatype */
#define DatumGetMacaddrP(X) ((macaddr *) DatumGetPointer(X))
#define MacaddrPGetDatum(X) PointerGetDatum(X)
#define PG_GETARG_MACADDR_P(n) DatumGetMacaddrP(PG_GETARG_DATUM(n))
#define PG_RETURN_MACADDR_P(x) return MacaddrPGetDatum(x)
#endif /* INET_H */
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