diff options
Diffstat (limited to 'src/include/utils/inet.h')
| -rw-r--r-- | src/include/utils/inet.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/src/include/utils/inet.h b/src/include/utils/inet.h index 330f32de8f1..bd31c7169a1 100644 --- a/src/include/utils/inet.h +++ b/src/include/utils/inet.h @@ -53,6 +53,38 @@ typedef struct inet_struct inet_data; } inet; +/* + * Access macros. We use VARDATA_ANY so that we can process short-header + * varlena values without detoasting them. This requires a trick: + * VARDATA_ANY assumes the varlena header is already filled in, which is + * not the case when constructing a new value (until SET_INET_VARSIZE is + * called, which we typically can't do till the end). Therefore, we + * always initialize the newly-allocated value to zeroes (using palloc0). + * A zero length word will look like the not-1-byte case to VARDATA_ANY, + * and so we correctly construct an uncompressed value. + * + * Note that ip_addrsize(), ip_maxbits(), and SET_INET_VARSIZE() require + * the family field to be set correctly. + */ +#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) \ + SET_VARSIZE(dst, VARHDRSZ + offsetof(inet_struct, ipaddr) + \ + ip_addrsize(dst)) + /* * This is the internal storage format for MAC addresses: @@ -82,4 +114,27 @@ typedef struct macaddr #define PG_GETARG_MACADDR_P(n) DatumGetMacaddrP(PG_GETARG_DATUM(n)) #define PG_RETURN_MACADDR_P(x) return MacaddrPGetDatum(x) +/* + * Support functions in network.c + */ +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); + +/* + * GiST support functions in network_gist.c + */ +extern Datum inet_gist_consistent(PG_FUNCTION_ARGS); +extern Datum inet_gist_union(PG_FUNCTION_ARGS); +extern Datum inet_gist_compress(PG_FUNCTION_ARGS); +extern Datum inet_gist_decompress(PG_FUNCTION_ARGS); +extern Datum inet_gist_penalty(PG_FUNCTION_ARGS); +extern Datum inet_gist_picksplit(PG_FUNCTION_ARGS); +extern Datum inet_gist_same(PG_FUNCTION_ARGS); + +/* + * Estimation functions in network_selfuncs.c + */ +extern Datum networksel(PG_FUNCTION_ARGS); +extern Datum networkjoinsel(PG_FUNCTION_ARGS); + #endif /* INET_H */ |