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| Dir : //proc/thread-self/root/proc/self/root/proc/self/root/usr/include/linux/netfilter/xt_sctp.h |
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _XT_SCTP_H_
#define _XT_SCTP_H_
#include <linux/types.h>
#define XT_SCTP_SRC_PORTS 0x01
#define XT_SCTP_DEST_PORTS 0x02
#define XT_SCTP_CHUNK_TYPES 0x04
#define XT_SCTP_VALID_FLAGS 0x07
struct xt_sctp_flag_info {
__u8 chunktype;
__u8 flag;
__u8 flag_mask;
};
#define XT_NUM_SCTP_FLAGS 4
struct xt_sctp_info {
__u16 dpts[2]; /* Min, Max */
__u16 spts[2]; /* Min, Max */
__u32 chunkmap[256 / sizeof (__u32)]; /* 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 */
__u32 chunk_match_type;
struct xt_sctp_flag_info flag_info[XT_NUM_SCTP_FLAGS];
int flag_count;
__u32 flags;
__u32 invflags;
};
#define bytes(type) (sizeof(type) * 8)
#define SCTP_CHUNKMAP_SET(chunkmap, type) \
do { \
(chunkmap)[type / bytes(__u32)] |= \
1 << (type % bytes(__u32)); \
} while (0)
#define SCTP_CHUNKMAP_CLEAR(chunkmap, type) \
do { \
(chunkmap)[type / bytes(__u32)] &= \
~(1 << (type % bytes(__u32))); \
} while (0)
#define SCTP_CHUNKMAP_IS_SET(chunkmap, type) \
({ \
((chunkmap)[type / bytes (__u32)] & \
(1 << (type % bytes (__u32)))) ? 1: 0; \
})
#define SCTP_CHUNKMAP_RESET(chunkmap) \
memset((chunkmap), 0, sizeof(chunkmap))
#define SCTP_CHUNKMAP_SET_ALL(chunkmap) \
memset((chunkmap), ~0U, sizeof(chunkmap))
#define SCTP_CHUNKMAP_COPY(destmap, srcmap) \
memcpy((destmap), (srcmap), sizeof(srcmap))
#define SCTP_CHUNKMAP_IS_CLEAR(chunkmap) \
__sctp_chunkmap_is_clear((chunkmap), ARRAY_SIZE(chunkmap))
static __inline__ _Bool
__sctp_chunkmap_is_clear(const __u32 *chunkmap, unsigned int n)
{
unsigned int i;
for (i = 0; i < n; ++i)
if (chunkmap[i])
return 0;
return 1;
}
#define SCTP_CHUNKMAP_IS_ALL_SET(chunkmap) \
__sctp_chunkmap_is_all_set((chunkmap), ARRAY_SIZE(chunkmap))
static __inline__ _Bool
__sctp_chunkmap_is_all_set(const __u32 *chunkmap, unsigned int n)
{
unsigned int i;
for (i = 0; i < n; ++i)
if (chunkmap[i] != ~0U)
return 0;
return 1;
}
#endif /* _XT_SCTP_H_ */