| #ifndef _XT_SCTP_H_ |
| #define _XT_SCTP_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 { |
| u_int8_t chunktype; |
| u_int8_t flag; |
| u_int8_t flag_mask; |
| }; |
| |
| #define XT_NUM_SCTP_FLAGS 4 |
| |
| struct xt_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 xt_sctp_flag_info flag_info[XT_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) \ |
| 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 u_int32_t *chunkmap, unsigned int n) |
| { |
| unsigned int i; |
| for (i = 0; i < n; ++i) |
| if (chunkmap[i]) |
| return false; |
| return true; |
| } |
| |
| #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 u_int32_t *chunkmap, unsigned int n) |
| { |
| unsigned int i; |
| for (i = 0; i < n; ++i) |
| if (chunkmap[i] != ~0U) |
| return false; |
| return true; |
| } |
| |
| #endif /* _XT_SCTP_H_ */ |
| |