1 #ifndef _XT_SCTP_H_ 2 #define _XT_SCTP_H_ 3 4 #define XT_SCTP_SRC_PORTS 0x01 5 #define XT_SCTP_DEST_PORTS 0x02 6 #define XT_SCTP_CHUNK_TYPES 0x04 7 8 #define XT_SCTP_VALID_FLAGS 0x07 9 10 struct xt_sctp_flag_info { 11 u_int8_t chunktype; 12 u_int8_t flag; 13 u_int8_t flag_mask; 14 }; 15 16 #define XT_NUM_SCTP_FLAGS 4 17 18 struct xt_sctp_info { 19 u_int16_t dpts[2]; /* Min, Max */ 20 u_int16_t spts[2]; /* Min, Max */ 21 22 u_int32_t chunkmap[256 / sizeof (u_int32_t)]; /* Bit mask of chunks to be matched according to RFC 2960 */ 23 24 #define SCTP_CHUNK_MATCH_ANY 0x01 /* Match if any of the chunk types are present */ 25 #define SCTP_CHUNK_MATCH_ALL 0x02 /* Match if all of the chunk types are present */ 26 #define SCTP_CHUNK_MATCH_ONLY 0x04 /* Match if these are the only chunk types present */ 27 28 u_int32_t chunk_match_type; 29 struct xt_sctp_flag_info flag_info[XT_NUM_SCTP_FLAGS]; 30 int flag_count; 31 32 u_int32_t flags; 33 u_int32_t invflags; 34 }; 35 36 #define bytes(type) (sizeof(type) * 8) 37 38 #define SCTP_CHUNKMAP_SET(chunkmap, type) \ 39 do { \ 40 chunkmap[type / bytes(u_int32_t)] |= \ 41 1 << (type % bytes(u_int32_t)); \ 42 } while (0) 43 44 #define SCTP_CHUNKMAP_CLEAR(chunkmap, type) \ 45 do { \ 46 chunkmap[type / bytes(u_int32_t)] &= \ 47 ~(1 << (type % bytes(u_int32_t))); \ 48 } while (0) 49 50 #define SCTP_CHUNKMAP_IS_SET(chunkmap, type) \ 51 ({ \ 52 (chunkmap[type / bytes (u_int32_t)] & \ 53 (1 << (type % bytes (u_int32_t)))) ? 1: 0; \ 54 }) 55 56 #define SCTP_CHUNKMAP_RESET(chunkmap) \ 57 do { \ 58 int i; \ 59 for (i = 0; i < ARRAY_SIZE(chunkmap); i++) \ 60 chunkmap[i] = 0; \ 61 } while (0) 62 63 #define SCTP_CHUNKMAP_SET_ALL(chunkmap) \ 64 do { \ 65 int i; \ 66 for (i = 0; i < ARRAY_SIZE(chunkmap); i++) \ 67 chunkmap[i] = ~0; \ 68 } while (0) 69 70 #define SCTP_CHUNKMAP_COPY(destmap, srcmap) \ 71 do { \ 72 int i; \ 73 for (i = 0; i < ARRAY_SIZE(srcmap); i++) \ 74 destmap[i] = srcmap[i]; \ 75 } while (0) 76 77 #define SCTP_CHUNKMAP_IS_CLEAR(chunkmap) \ 78 ({ \ 79 int i; \ 80 int flag = 1; \ 81 for (i = 0; i < ARRAY_SIZE(chunkmap); i++) { \ 82 if (chunkmap[i]) { \ 83 flag = 0; \ 84 break; \ 85 } \ 86 } \ 87 flag; \ 88 }) 89 90 #define SCTP_CHUNKMAP_IS_ALL_SET(chunkmap) \ 91 ({ \ 92 int i; \ 93 int flag = 1; \ 94 for (i = 0; i < ARRAY_SIZE(chunkmap); i++) { \ 95 if (chunkmap[i] != ~0) { \ 96 flag = 0; \ 97 break; \ 98 } \ 99 } \ 100 flag; \ 101 }) 102 103 #endif /* _XT_SCTP_H_ */ 104 105
