1 #ifndef _IPT_SCTP_H_ 2 #define _IPT_SCTP_H_ 3 4 #define IPT_SCTP_SRC_PORTS 0x01 5 #define IPT_SCTP_DEST_PORTS 0x02 6 #define IPT_SCTP_CHUNK_TYPES 0x04 7 8 #define IPT_SCTP_VALID_FLAGS 0x07 9 10 11 struct ipt_sctp_flag_info { 12 u_int8_t chunktype; 13 u_int8_t flag; 14 u_int8_t flag_mask; 15 }; 16 17 #define IPT_NUM_SCTP_FLAGS 4 18 19 struct ipt_sctp_info { 20 u_int16_t dpts[2]; /* Min, Max */ 21 u_int16_t spts[2]; /* Min, Max */ 22 23 u_int32_t chunkmap[256 / sizeof (u_int32_t)]; /* Bit mask of chunks to be matched according to RFC 2960 */ 24 25 #define SCTP_CHUNK_MATCH_ANY 0x01 /* Match if any of the chunk types are present */ 26 #define SCTP_CHUNK_MATCH_ALL 0x02 /* Match if all of the chunk types are present */ 27 #define SCTP_CHUNK_MATCH_ONLY 0x04 /* Match if these are the only chunk types present */ 28 29 u_int32_t chunk_match_type; 30 struct ipt_sctp_flag_info flag_info[IPT_NUM_SCTP_FLAGS]; 31 int flag_count; 32 33 u_int32_t flags; 34 u_int32_t invflags; 35 }; 36 37 #define bytes(type) (sizeof(type) * 8) 38 39 #define SCTP_CHUNKMAP_SET(chunkmap, type) \ 40 do { \ 41 chunkmap[type / bytes(u_int32_t)] |= \ 42 1 << (type % bytes(u_int32_t)); \ 43 } while (0) 44 45 #define SCTP_CHUNKMAP_CLEAR(chunkmap, type) \ 46 do { \ 47 chunkmap[type / bytes(u_int32_t)] &= \ 48 ~(1 << (type % bytes(u_int32_t))); \ 49 } while (0) 50 51 #define SCTP_CHUNKMAP_IS_SET(chunkmap, type) \ 52 ({ \ 53 (chunkmap[type / bytes (u_int32_t)] & \ 54 (1 << (type % bytes (u_int32_t)))) ? 1: 0; \ 55 }) 56 57 #define SCTP_CHUNKMAP_RESET(chunkmap) \ 58 do { \ 59 int i; \ 60 for (i = 0; i < ARRAY_SIZE(chunkmap); i++) \ 61 chunkmap[i] = 0; \ 62 } while (0) 63 64 #define SCTP_CHUNKMAP_SET_ALL(chunkmap) \ 65 do { \ 66 int i; \ 67 for (i = 0; i < ARRAY_SIZE(chunkmap); i++) \ 68 chunkmap[i] = ~0; \ 69 } while (0) 70 71 #define SCTP_CHUNKMAP_COPY(destmap, srcmap) \ 72 do { \ 73 int i; \ 74 for (i = 0; i < ARRAY_SIZE(chunkmap); i++) \ 75 destmap[i] = srcmap[i]; \ 76 } while (0) 77 78 #define SCTP_CHUNKMAP_IS_CLEAR(chunkmap) \ 79 ({ \ 80 int i; \ 81 int flag = 1; \ 82 for (i = 0; i < ARRAY_SIZE(chunkmap); i++) { \ 83 if (chunkmap[i]) { \ 84 flag = 0; \ 85 break; \ 86 } \ 87 } \ 88 flag; \ 89 }) 90 91 #define SCTP_CHUNKMAP_IS_ALL_SET(chunkmap) \ 92 ({ \ 93 int i; \ 94 int flag = 1; \ 95 for (i = 0; i < ARRAY_SIZE(chunkmap); i++) { \ 96 if (chunkmap[i] != ~0) { \ 97 flag = 0; \ 98 break; \ 99 } \ 100 } \ 101 flag; \ 102 }) 103 104 #endif /* _IPT_SCTP_H_ */ 105 106
