Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 1 | #ifndef _XT_SCTP_H_ |
| 2 | #define _XT_SCTP_H_ |
| 3 | |
Arnd Bergmann | 60c195c | 2009-02-26 00:51:43 +0100 | [diff] [blame] | 4 | #include <linux/types.h> |
| 5 | |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 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 | |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 12 | struct xt_sctp_flag_info { |
Arnd Bergmann | 60c195c | 2009-02-26 00:51:43 +0100 | [diff] [blame] | 13 | __u8 chunktype; |
| 14 | __u8 flag; |
| 15 | __u8 flag_mask; |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 16 | }; |
| 17 | |
| 18 | #define XT_NUM_SCTP_FLAGS 4 |
| 19 | |
| 20 | struct xt_sctp_info { |
Arnd Bergmann | 60c195c | 2009-02-26 00:51:43 +0100 | [diff] [blame] | 21 | __u16 dpts[2]; /* Min, Max */ |
| 22 | __u16 spts[2]; /* Min, Max */ |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 23 | |
Arnd Bergmann | 60c195c | 2009-02-26 00:51:43 +0100 | [diff] [blame] | 24 | __u32 chunkmap[256 / sizeof (__u32)]; /* Bit mask of chunks to be matched according to RFC 2960 */ |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 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 | |
Arnd Bergmann | 60c195c | 2009-02-26 00:51:43 +0100 | [diff] [blame] | 30 | __u32 chunk_match_type; |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 31 | struct xt_sctp_flag_info flag_info[XT_NUM_SCTP_FLAGS]; |
| 32 | int flag_count; |
| 33 | |
Arnd Bergmann | 60c195c | 2009-02-26 00:51:43 +0100 | [diff] [blame] | 34 | __u32 flags; |
| 35 | __u32 invflags; |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 36 | }; |
| 37 | |
| 38 | #define bytes(type) (sizeof(type) * 8) |
| 39 | |
| 40 | #define SCTP_CHUNKMAP_SET(chunkmap, type) \ |
| 41 | do { \ |
Arnd Bergmann | 60c195c | 2009-02-26 00:51:43 +0100 | [diff] [blame] | 42 | (chunkmap)[type / bytes(__u32)] |= \ |
| 43 | 1 << (type % bytes(__u32)); \ |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 44 | } while (0) |
| 45 | |
| 46 | #define SCTP_CHUNKMAP_CLEAR(chunkmap, type) \ |
| 47 | do { \ |
Arnd Bergmann | 60c195c | 2009-02-26 00:51:43 +0100 | [diff] [blame] | 48 | (chunkmap)[type / bytes(__u32)] &= \ |
| 49 | ~(1 << (type % bytes(__u32))); \ |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 50 | } while (0) |
| 51 | |
| 52 | #define SCTP_CHUNKMAP_IS_SET(chunkmap, type) \ |
| 53 | ({ \ |
Arnd Bergmann | 60c195c | 2009-02-26 00:51:43 +0100 | [diff] [blame] | 54 | ((chunkmap)[type / bytes (__u32)] & \ |
| 55 | (1 << (type % bytes (__u32)))) ? 1: 0; \ |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 56 | }) |
| 57 | |
Jan Engelhardt | b9f61b1 | 2008-04-14 09:56:04 +0200 | [diff] [blame] | 58 | #define SCTP_CHUNKMAP_RESET(chunkmap) \ |
| 59 | memset((chunkmap), 0, sizeof(chunkmap)) |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 60 | |
Jan Engelhardt | b9f61b1 | 2008-04-14 09:56:04 +0200 | [diff] [blame] | 61 | #define SCTP_CHUNKMAP_SET_ALL(chunkmap) \ |
| 62 | memset((chunkmap), ~0U, sizeof(chunkmap)) |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 63 | |
Jan Engelhardt | b9f61b1 | 2008-04-14 09:56:04 +0200 | [diff] [blame] | 64 | #define SCTP_CHUNKMAP_COPY(destmap, srcmap) \ |
| 65 | memcpy((destmap), (srcmap), sizeof(srcmap)) |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 66 | |
Jan Engelhardt | b9f61b1 | 2008-04-14 09:56:04 +0200 | [diff] [blame] | 67 | #define SCTP_CHUNKMAP_IS_CLEAR(chunkmap) \ |
| 68 | __sctp_chunkmap_is_clear((chunkmap), ARRAY_SIZE(chunkmap)) |
| 69 | static inline bool |
Arnd Bergmann | 60c195c | 2009-02-26 00:51:43 +0100 | [diff] [blame] | 70 | __sctp_chunkmap_is_clear(const __u32 *chunkmap, unsigned int n) |
Jan Engelhardt | b9f61b1 | 2008-04-14 09:56:04 +0200 | [diff] [blame] | 71 | { |
| 72 | unsigned int i; |
| 73 | for (i = 0; i < n; ++i) |
| 74 | if (chunkmap[i]) |
| 75 | return false; |
| 76 | return true; |
| 77 | } |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 78 | |
Jan Engelhardt | b9f61b1 | 2008-04-14 09:56:04 +0200 | [diff] [blame] | 79 | #define SCTP_CHUNKMAP_IS_ALL_SET(chunkmap) \ |
| 80 | __sctp_chunkmap_is_all_set((chunkmap), ARRAY_SIZE(chunkmap)) |
| 81 | static inline bool |
Arnd Bergmann | 60c195c | 2009-02-26 00:51:43 +0100 | [diff] [blame] | 82 | __sctp_chunkmap_is_all_set(const __u32 *chunkmap, unsigned int n) |
Jan Engelhardt | b9f61b1 | 2008-04-14 09:56:04 +0200 | [diff] [blame] | 83 | { |
| 84 | unsigned int i; |
| 85 | for (i = 0; i < n; ++i) |
| 86 | if (chunkmap[i] != ~0U) |
| 87 | return false; |
| 88 | return true; |
| 89 | } |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 90 | |
| 91 | #endif /* _XT_SCTP_H_ */ |
| 92 | |