/* 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)] |= \ 1u << (type % bytes(__u32)); \ } while (0) #define SCTP_CHUNKMAP_CLEAR(chunkmap, type) \ do { \ (chunkmap)[type / bytes(__u32)] &= \ ~(1u << (type % bytes(__u32))); \ } while (0) #define SCTP_CHUNKMAP_IS_SET(chunkmap, type) \ ({ \ ((chunkmap)[type / bytes (__u32)] & \ (1u << (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_ */ SIMPAN PERUBAHAN