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author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-08-05 17:04:01 -0300 |
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committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-08-05 17:04:01 -0300 |
commit | 57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch) | |
tree | 5e910f0e82173f4ef4f51111366a3f1299037a7b /include/uapi/linux/netfilter/xt_sctp.h |
Initial import
Diffstat (limited to 'include/uapi/linux/netfilter/xt_sctp.h')
-rw-r--r-- | include/uapi/linux/netfilter/xt_sctp.h | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/include/uapi/linux/netfilter/xt_sctp.h b/include/uapi/linux/netfilter/xt_sctp.h new file mode 100644 index 000000000..29287be69 --- /dev/null +++ b/include/uapi/linux/netfilter/xt_sctp.h @@ -0,0 +1,92 @@ +#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 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 __u32 *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_ */ + |