inet.h File Reference

#include "fmgr.h"

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Data Structures
struct	inet_struct
struct	inet
struct	macaddr
struct	macaddr8

Macros
#define	PGSQL_AF_INET   (AF_INET + 0)
#define	PGSQL_AF_INET6   (AF_INET + 1)
#define	ip_family(inetptr)    (((inet_struct *) VARDATA_ANY(inetptr))->family)
#define	ip_bits(inetptr)    (((inet_struct *) VARDATA_ANY(inetptr))->bits)
#define	ip_addr(inetptr)    (((inet_struct *) VARDATA_ANY(inetptr))->ipaddr)
#define	ip_addrsize(inetptr)    (ip_family(inetptr) == PGSQL_AF_INET ? 4 : 16)
#define	ip_maxbits(inetptr)    (ip_family(inetptr) == PGSQL_AF_INET ? 32 : 128)
#define	SET_INET_VARSIZE(dst)
#define	PG_GETARG_INET_PP(n)   DatumGetInetPP(PG_GETARG_DATUM(n))
#define	PG_RETURN_INET_P(x)   return InetPGetDatum(x)
#define	PG_GETARG_INET_P(n)   DatumGetInetP(PG_GETARG_DATUM(n))
#define	PG_GETARG_MACADDR_P(n)   DatumGetMacaddrP(PG_GETARG_DATUM(n))
#define	PG_RETURN_MACADDR_P(x)   return MacaddrPGetDatum(x)
#define	PG_GETARG_MACADDR8_P(n)   DatumGetMacaddr8P(PG_GETARG_DATUM(n))
#define	PG_RETURN_MACADDR8_P(x)   return Macaddr8PGetDatum(x)

Typedefs
typedef struct macaddr	macaddr
typedef struct macaddr8	macaddr8

Functions
static inet *	DatumGetInetPP (Datum X)
static Datum	InetPGetDatum (const inet *X)
static inet *	DatumGetInetP (Datum X)
static macaddr *	DatumGetMacaddrP (Datum X)
static Datum	MacaddrPGetDatum (const macaddr *X)
static macaddr8 *	DatumGetMacaddr8P (Datum X)
static Datum	Macaddr8PGetDatum (const macaddr8 *X)
inet *	cidr_set_masklen_internal (const inet *src, int bits)
int	bitncmp (const unsigned char *l, const unsigned char *r, int n)
int	bitncommon (const unsigned char *l, const unsigned char *r, int n)

Macro Definition Documentation

ip_addr

#define ip_addr

(

inetptr

)

(((inet_struct *) VARDATA_ANY(inetptr))->ipaddr)

Definition at line 77 of file inet.h.

                                             : 16)
 
#define ip_maxbits(inetptr) \
    (ip_family(inetptr) == PGSQL_AF_INET ? 32 : 128)
 
#define SET_INET_VARSIZE(dst) \
	SET_VARSIZE(dst, VARHDRSZ + offsetof(inet_struct, ipaddr) + \
                ip_addrsize(dst))
 
 
/*
 *  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;
 
/*
 *  This is the internal storage format for MAC8 addresses:
 */
typedef struct macaddr8
{
    unsigned char a;
    unsigned char b;
    unsigned char c;
    unsigned char d;
    unsigned char e;
    unsigned char f;
    unsigned char g;
    unsigned char h;
} macaddr8;
 
/*
 * fmgr interface macros
 */
static inline inet *
DatumGetInetPP(Datum X)
{
    return (inet *) PG_DETOAST_DATUM_PACKED(X);
}
 
static inline Datum
InetPGetDatum(const inet *X)
{
    return PointerGetDatum(X);
}
 
#define PG_GETARG_INET_PP(n) DatumGetInetPP(PG_GETARG_DATUM(n))
#define PG_RETURN_INET_P(x) return InetPGetDatum(x)
 
/* obsolescent variants */
static inline inet *
DatumGetInetP(Datum X)
{
    return (inet *) PG_DETOAST_DATUM(X);
}
#define PG_GETARG_INET_P(n) DatumGetInetP(PG_GETARG_DATUM(n))
 
/* macaddr is a fixed-length pass-by-reference datatype */
static inline macaddr *
DatumGetMacaddrP(Datum X)
{
    return (macaddr *) DatumGetPointer(X);
}
 
static inline Datum
MacaddrPGetDatum(const macaddr *X)
{
    return PointerGetDatum(X);
}
 
#define PG_GETARG_MACADDR_P(n) DatumGetMacaddrP(PG_GETARG_DATUM(n))
#define PG_RETURN_MACADDR_P(x) return MacaddrPGetDatum(x)
 
/* macaddr8 is a fixed-length pass-by-reference datatype */
static inline macaddr8 *
DatumGetMacaddr8P(Datum X)
{
    return (macaddr8 *) DatumGetPointer(X);
}
 
static inline Datum
Macaddr8PGetDatum(const macaddr8 *X)
{
    return PointerGetDatum(X);
}
 
#define PG_GETARG_MACADDR8_P(n) DatumGetMacaddr8P(PG_GETARG_DATUM(n))
#define PG_RETURN_MACADDR8_P(x) return Macaddr8PGetDatum(x)
 
/*
 * Support functions in network.c
 */
extern inet *cidr_set_masklen_internal(const inet *src, int bits);
extern int  bitncmp(const unsigned char *l, const unsigned char *r, int n);
extern int  bitncommon(const unsigned char *l, const unsigned char *r, int n);
 
#endif                          /* INET_H */

ip_addrsize

#define ip_addrsize

(

inetptr

)

(ip_family(inetptr) == PGSQL_AF_INET ? 4 : 16)

Definition at line 80 of file inet.h.

                                             : 16)

ip_bits

#define ip_bits

(

inetptr

)

(((inet_struct *) VARDATA_ANY(inetptr))->bits)

Definition at line 74 of file inet.h.

ip_family

#define ip_family

(

inetptr

)

(((inet_struct *) VARDATA_ANY(inetptr))->family)

Definition at line 71 of file inet.h.

ip_maxbits

#define ip_maxbits

(

inetptr

)

(ip_family(inetptr) == PGSQL_AF_INET ? 32 : 128)

Definition at line 83 of file inet.h.

                                              : 128)

PG_GETARG_INET_P

#define PG_GETARG_INET_P

(

n

)

DatumGetInetP(PG_GETARG_DATUM(n))

Definition at line 143 of file inet.h.

PG_GETARG_INET_PP

#define PG_GETARG_INET_PP

(

n

)

DatumGetInetPP(PG_GETARG_DATUM(n))

Definition at line 134 of file inet.h.

PG_GETARG_MACADDR8_P

#define PG_GETARG_MACADDR8_P

(

n

)

DatumGetMacaddr8P(PG_GETARG_DATUM(n))

Definition at line 174 of file inet.h.

PG_GETARG_MACADDR_P

#define PG_GETARG_MACADDR_P

(

n

)

DatumGetMacaddrP(PG_GETARG_DATUM(n))

Definition at line 158 of file inet.h.

PG_RETURN_INET_P

#define PG_RETURN_INET_P

(

x

)

return InetPGetDatum(x)

Definition at line 135 of file inet.h.

PG_RETURN_MACADDR8_P

#define PG_RETURN_MACADDR8_P

(

x

)

return Macaddr8PGetDatum(x)

Definition at line 175 of file inet.h.

PG_RETURN_MACADDR_P

#define PG_RETURN_MACADDR_P

(

x

)

return MacaddrPGetDatum(x)

Definition at line 159 of file inet.h.

PGSQL_AF_INET

#define PGSQL_AF_INET   (AF_INET + 0)

Definition at line 39 of file inet.h.

PGSQL_AF_INET6

#define PGSQL_AF_INET6   (AF_INET + 1)

Definition at line 40 of file inet.h.

SET_INET_VARSIZE

#define SET_INET_VARSIZE

(

dst

)

Value:

    SET_VARSIZE(dst, VARHDRSZ + offsetof(inet_struct, ipaddr) + \
                ip_addrsize(dst))

Definition at line 86 of file inet.h.

Typedef Documentation

macaddr

typedef struct macaddr macaddr

macaddr8

typedef struct macaddr8 macaddr8

Function Documentation

bitncmp()

int bitncmp ( const unsigned char *  l, const unsigned char *  r, int  n  )

extern

Definition at line 1502 of file network.c.

{
    unsigned int lb,
                rb;
    int         x,
                b;
 
    b = n / 8;
    x = memcmp(l, r, b);
    if (x || (n % 8) == 0)
        return x;
 
    lb = l[b];
    rb = r[b];
    for (b = n % 8; b > 0; b--)
    {
        if (IS_HIGHBIT_SET(lb) != IS_HIGHBIT_SET(rb))
        {
            if (IS_HIGHBIT_SET(lb))
                return 1;
            return -1;
        }
        lb <<= 1;
        rb <<= 1;
    }
    return 0;
}

References b, fb(), IS_HIGHBIT_SET, and x.

Referenced by inet_gist_consistent(), inet_inclusion_cmp(), inet_spg_choose(), inet_spg_consistent_bitmap(), network_cmp_internal(), network_overlap(), network_sub(), network_subeq(), network_sup(), and network_supeq().

bitncommon()

int bitncommon ( const unsigned char *  l, const unsigned char *  r, int  n  )

extern

Definition at line 1536 of file network.c.

{
    int         byte,
                nbits;
 
    /* number of bits to examine in last byte */
    nbits = n % 8;
 
    /* check whole bytes */
    for (byte = 0; byte < n / 8; byte++)
    {
        if (l[byte] != r[byte])
        {
            /* at least one bit in the last byte is not common */
            nbits = 7;
            break;
        }
    }
 
    /* check bits in last partial byte */
    if (nbits != 0)
    {
        /* calculate diff of first non-matching bytes */
        unsigned int diff = l[byte] ^ r[byte];
 
        /* compare the bits from the most to the least */
        while ((diff >> (8 - nbits)) != 0)
            nbits--;
    }
 
    return (8 * byte) + nbits;
}

References fb().

Referenced by calc_inet_union_params(), calc_inet_union_params_indexed(), inet_gist_penalty(), inet_hist_match_divider(), inet_merge(), inet_spg_choose(), and inet_spg_picksplit().

cidr_set_masklen_internal()

inet * cidr_set_masklen_internal ( const inet *  src, int  bits  )

extern

Definition at line 364 of file network.c.

{
    inet       *dst = palloc0_object(inet);
 
    ip_family(dst) = ip_family(src);
    ip_bits(dst) = bits;
 
    if (bits > 0)
    {
        Assert(bits <= ip_maxbits(dst));
 
        /* Clone appropriate bytes of the address, leaving the rest 0 */
        memcpy(ip_addr(dst), ip_addr(src), (bits + 7) / 8);
 
        /* Clear any unwanted bits in the last partial byte */
        if (bits % 8)
            ip_addr(dst)[bits / 8] &= ~(0xFF >> (bits % 8));
    }
 
    /* Set varlena header correctly */
    SET_INET_VARSIZE(dst);
 
    return dst;
}

References Assert, fb(), ip_addr, ip_bits, ip_family, ip_maxbits, palloc0_object, and SET_INET_VARSIZE.

Referenced by cidr_set_masklen(), inet_merge(), inet_spg_choose(), inet_spg_picksplit(), and inet_to_cidr().

DatumGetInetP()

static inet * DatumGetInetP ( Datum  X )

inlinestatic

Definition at line 139 of file inet.h.

{
    return (inet *) PG_DETOAST_DATUM(X);
}

References fb(), and PG_DETOAST_DATUM.

DatumGetInetPP()

static inet * DatumGetInetPP ( Datum  X )

inlinestatic

Definition at line 123 of file inet.h.

{
    return (inet *) PG_DETOAST_DATUM_PACKED(X);
}

References fb(), and PG_DETOAST_DATUM_PACKED.

Referenced by convert_network_to_scalar(), inet_gist_compress(), inet_hist_value_sel(), inet_spg_choose(), inet_spg_consistent_bitmap(), inet_spg_inner_consistent(), inet_spg_leaf_consistent(), inet_spg_picksplit(), network_abbrev_convert(), and network_fast_cmp().

DatumGetMacaddr8P()

static macaddr8 * DatumGetMacaddr8P ( Datum  X )

inlinestatic

Definition at line 163 of file inet.h.

{
    return (macaddr8 *) DatumGetPointer(X);
}

References DatumGetPointer(), and fb().

Referenced by convert_network_to_scalar().

DatumGetMacaddrP()

static macaddr * DatumGetMacaddrP ( Datum  X )

inlinestatic

Definition at line 147 of file inet.h.

{
    return (macaddr *) DatumGetPointer(X);
}

References DatumGetPointer(), and fb().

Referenced by convert_network_to_scalar(), macaddr_abbrev_convert(), and macaddr_fast_cmp().

InetPGetDatum()

static Datum InetPGetDatum ( const inet *  X )

inlinestatic

Definition at line 129 of file inet.h.

{
    return PointerGetDatum(X);
}

References fb(), and PointerGetDatum().

Referenced by inet_gist_fetch(), inet_spg_choose(), inet_spg_leaf_consistent(), and inet_spg_picksplit().

Macaddr8PGetDatum()

static Datum Macaddr8PGetDatum ( const macaddr8 *  X )

inlinestatic

Definition at line 169 of file inet.h.

{
    return PointerGetDatum(X);
}

References fb(), and PointerGetDatum().

Referenced by gbt_macad8key_cmp(), gbt_macaddr8_ssup_cmp(), and leftmostvalue_macaddr8().

MacaddrPGetDatum()

static Datum MacaddrPGetDatum ( const macaddr *  X )

inlinestatic

Definition at line 153 of file inet.h.

{
    return PointerGetDatum(X);
}

References fb(), and PointerGetDatum().

Referenced by gbt_macaddr_ssup_cmp(), gbt_macadkey_cmp(), and leftmostvalue_macaddr().