1 #ifndef _XT_SCTP_H_ 2 #define _XT_SCTP_H_ 3 4 #include <linux/types.h> 5 6 #define XT_SCTP_SRC_PORTS 0x01 7 #define XT_SCTP_DEST_PORTS 0x02 8 #define XT_SCTP_CHUNK_TYPES 0x04 9 10 #define XT_SCTP_VALID_FLAGS 0x07 11 12 struct xt_sctp_flag_info { 13 __u8 chunktype; 14 __u8 flag; 15 __u8 flag_mask; 16 }; 17 18 #define XT_NUM_SCTP_FLAGS 4 19 20 struct xt_sctp_info { 21 __u16 dpts[2]; /* Min, Max */ 22 __u16 spts[2]; /* Min, Max */ 23 24 __u32 chunkmap[256 / sizeof (__u32)]; /* Bit mask of chunks to be matched according to RFC 2960 */ 25 26 #define SCTP_CHUNK_MATCH_ANY 0x01 /* Match if any of the chunk types are present */ 27 #define SCTP_CHUNK_MATCH_ALL 0x02 /* Match if all of the chunk types are present */ 28 #define SCTP_CHUNK_MATCH_ONLY 0x04 /* Match if these are the only chunk types present */ 29 30 __u32 chunk_match_type; 31 struct xt_sctp_flag_info flag_info[XT_NUM_SCTP_FLAGS]; 32 int flag_count; 33 34 __u32 flags; 35 __u32 invflags; 36 }; 37 38 #define bytes(type) (sizeof(type) * 8) 39 40 #define SCTP_CHUNKMAP_SET(chunkmap, type) \ 41 do { \ 42 (chunkmap)[type / bytes(__u32)] |= \ 43 1 << (type % bytes(__u32)); \ 44 } while (0) 45 46 #define SCTP_CHUNKMAP_CLEAR(chunkmap, type) \ 47 do { \ 48 (chunkmap)[type / bytes(__u32)] &= \ 49 ~(1 << (type % bytes(__u32))); \ 50 } while (0) 51 52 #define SCTP_CHUNKMAP_IS_SET(chunkmap, type) \ 53 ({ \ 54 ((chunkmap)[type / bytes (__u32)] & \ 55 (1 << (type % bytes (__u32)))) ? 1: 0; \ 56 }) 57 58 #define SCTP_CHUNKMAP_RESET(chunkmap) \ 59 memset((chunkmap), 0, sizeof(chunkmap)) 60 61 #define SCTP_CHUNKMAP_SET_ALL(chunkmap) \ 62 memset((chunkmap), ~0U, sizeof(chunkmap)) 63 64 #define SCTP_CHUNKMAP_COPY(destmap, srcmap) \ 65 memcpy((destmap), (srcmap), sizeof(srcmap)) 66 67 #define SCTP_CHUNKMAP_IS_CLEAR(chunkmap) \ 68 __sctp_chunkmap_is_clear((chunkmap), ARRAY_SIZE(chunkmap)) 69 static inline bool 70 __sctp_chunkmap_is_clear(const __u32 *chunkmap, unsigned int n) 71 { 72 unsigned int i; 73 for (i = 0; i < n; ++i) 74 if (chunkmap[i]) 75 return false; 76 return true; 77 } 78 79 #define SCTP_CHUNKMAP_IS_ALL_SET(chunkmap) \ 80 __sctp_chunkmap_is_all_set((chunkmap), ARRAY_SIZE(chunkmap)) 81 static inline bool 82 __sctp_chunkmap_is_all_set(const __u32 *chunkmap, unsigned int n) 83 { 84 unsigned int i; 85 for (i = 0; i < n; ++i) 86 if (chunkmap[i] != ~0U) 87 return false; 88 return true; 89 } 90 91 #endif /* _XT_SCTP_H_ */ 92 93
