ipt_sctp.h
#ifndef _IPT_SCTP_H_
#define _IPT_SCTP_H_
#define IPT_SCTP_SRC_PORTS 0x01
#define IPT_SCTP_DEST_PORTS 0x02
#define IPT_SCTP_CHUNK_TYPES 0x04
#define IPT_SCTP_VALID_FLAGS 0x07
struct ipt_sctp_flag_info {
u_int8_t chunktype;
u_int8_t flag;
u_int8_t flag_mask;
};
#define IPT_NUM_SCTP_FLAGS 4
struct ipt_sctp_info {
u_int16_t dpts[2]; /* Min, Max */
u_int16_t spts[2]; /* Min, Max */
u_int32_t chunkmap[256 / sizeof (u_int32_t)]; /* Bit mask of chunks to be matched according to RFC 2960 */
#define SCTP_CHUNK_MATCH_ANY 0x01 /* Match if any of the chunk types are present */
#define SCTP_CHUNK_MATCH_ALL 0x02 /* Match if all of the chunk types are present */
#define SCTP_CHUNK_MATCH_ONLY 0x04 /* Match if these are the only chunk types present */
u_int32_t chunk_match_type;
struct ipt_sctp_flag_info flag_info[IPT_NUM_SCTP_FLAGS];
int flag_count;
u_int32_t flags;
u_int32_t invflags;
};
#define bytes(type) (sizeof(type) * 8)
#define SCTP_CHUNKMAP_SET(chunkmap, type) \
do { \
chunkmap[type / bytes(u_int32_t)] |= \
1 << (type % bytes(u_int32_t)); \
} while (0)
#define SCTP_CHUNKMAP_CLEAR(chunkmap, type) \
do { \
chunkmap[type / bytes(u_int32_t)] &= \
~(1 << (type % bytes(u_int32_t))); \
} while (0)
#define SCTP_CHUNKMAP_IS_SET(chunkmap, type) \
({ \
(chunkmap[type / bytes (u_int32_t)] & \
(1 << (type % bytes (u_int32_t)))) ? 1: 0; \
})
#define SCTP_CHUNKMAP_RESET(chunkmap) \
do { \
int i; \
for (i = 0; i < ARRAY_SIZE(chunkmap); i++) \
chunkmap[i] = 0; \
} while (0)
#define SCTP_CHUNKMAP_SET_ALL(chunkmap) \
do { \
int i; \
for (i = 0; i < ARRAY_SIZE(chunkmap); i++) \
chunkmap[i] = ~0; \
} while (0)
#define SCTP_CHUNKMAP_COPY(destmap, srcmap) \
do { \
int i; \
for (i = 0; i < ARRAY_SIZE(chunkmap); i++) \
destmap[i] = srcmap[i]; \
} while (0)
#define SCTP_CHUNKMAP_IS_CLEAR(chunkmap) \
({ \
int i; \
int flag = 1; \
for (i = 0; i < ARRAY_SIZE(chunkmap); i++) { \
if (chunkmap[i]) { \
flag = 0; \
break; \
} \
} \
flag; \
})
#define SCTP_CHUNKMAP_IS_ALL_SET(chunkmap) \
({ \
int i; \
int flag = 1; \
for (i = 0; i < ARRAY_SIZE(chunkmap); i++) { \
if (chunkmap[i] != ~0) { \
flag = 0; \
break; \
} \
} \
flag; \
})
#endif /* _IPT_SCTP_H_ */