]>
Commit | Line | Data |
---|---|---|
6f52b16c | 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
2e4e6a17 HW |
2 | #ifndef _XT_SCTP_H_ |
3 | #define _XT_SCTP_H_ | |
4 | ||
60c195c7 AB |
5 | #include <linux/types.h> |
6 | ||
2e4e6a17 HW |
7 | #define XT_SCTP_SRC_PORTS 0x01 |
8 | #define XT_SCTP_DEST_PORTS 0x02 | |
9 | #define XT_SCTP_CHUNK_TYPES 0x04 | |
10 | ||
11 | #define XT_SCTP_VALID_FLAGS 0x07 | |
12 | ||
2e4e6a17 | 13 | struct xt_sctp_flag_info { |
60c195c7 AB |
14 | __u8 chunktype; |
15 | __u8 flag; | |
16 | __u8 flag_mask; | |
2e4e6a17 HW |
17 | }; |
18 | ||
19 | #define XT_NUM_SCTP_FLAGS 4 | |
20 | ||
21 | struct xt_sctp_info { | |
60c195c7 AB |
22 | __u16 dpts[2]; /* Min, Max */ |
23 | __u16 spts[2]; /* Min, Max */ | |
2e4e6a17 | 24 | |
60c195c7 | 25 | __u32 chunkmap[256 / sizeof (__u32)]; /* Bit mask of chunks to be matched according to RFC 2960 */ |
2e4e6a17 HW |
26 | |
27 | #define SCTP_CHUNK_MATCH_ANY 0x01 /* Match if any of the chunk types are present */ | |
28 | #define SCTP_CHUNK_MATCH_ALL 0x02 /* Match if all of the chunk types are present */ | |
29 | #define SCTP_CHUNK_MATCH_ONLY 0x04 /* Match if these are the only chunk types present */ | |
30 | ||
60c195c7 | 31 | __u32 chunk_match_type; |
2e4e6a17 HW |
32 | struct xt_sctp_flag_info flag_info[XT_NUM_SCTP_FLAGS]; |
33 | int flag_count; | |
34 | ||
60c195c7 AB |
35 | __u32 flags; |
36 | __u32 invflags; | |
2e4e6a17 HW |
37 | }; |
38 | ||
39 | #define bytes(type) (sizeof(type) * 8) | |
40 | ||
41 | #define SCTP_CHUNKMAP_SET(chunkmap, type) \ | |
42 | do { \ | |
60c195c7 AB |
43 | (chunkmap)[type / bytes(__u32)] |= \ |
44 | 1 << (type % bytes(__u32)); \ | |
2e4e6a17 HW |
45 | } while (0) |
46 | ||
47 | #define SCTP_CHUNKMAP_CLEAR(chunkmap, type) \ | |
48 | do { \ | |
60c195c7 AB |
49 | (chunkmap)[type / bytes(__u32)] &= \ |
50 | ~(1 << (type % bytes(__u32))); \ | |
2e4e6a17 HW |
51 | } while (0) |
52 | ||
53 | #define SCTP_CHUNKMAP_IS_SET(chunkmap, type) \ | |
54 | ({ \ | |
60c195c7 AB |
55 | ((chunkmap)[type / bytes (__u32)] & \ |
56 | (1 << (type % bytes (__u32)))) ? 1: 0; \ | |
2e4e6a17 HW |
57 | }) |
58 | ||
b9f61b16 JE |
59 | #define SCTP_CHUNKMAP_RESET(chunkmap) \ |
60 | memset((chunkmap), 0, sizeof(chunkmap)) | |
61 | ||
62 | #define SCTP_CHUNKMAP_SET_ALL(chunkmap) \ | |
63 | memset((chunkmap), ~0U, sizeof(chunkmap)) | |
64 | ||
65 | #define SCTP_CHUNKMAP_COPY(destmap, srcmap) \ | |
66 | memcpy((destmap), (srcmap), sizeof(srcmap)) | |
67 | ||
68 | #define SCTP_CHUNKMAP_IS_CLEAR(chunkmap) \ | |
69 | __sctp_chunkmap_is_clear((chunkmap), ARRAY_SIZE(chunkmap)) | |
1ffad83d | 70 | static inline _Bool |
60c195c7 | 71 | __sctp_chunkmap_is_clear(const __u32 *chunkmap, unsigned int n) |
b9f61b16 JE |
72 | { |
73 | unsigned int i; | |
74 | for (i = 0; i < n; ++i) | |
75 | if (chunkmap[i]) | |
1ffad83d MR |
76 | return 0; |
77 | return 1; | |
b9f61b16 JE |
78 | } |
79 | ||
80 | #define SCTP_CHUNKMAP_IS_ALL_SET(chunkmap) \ | |
81 | __sctp_chunkmap_is_all_set((chunkmap), ARRAY_SIZE(chunkmap)) | |
1ffad83d | 82 | static inline _Bool |
60c195c7 | 83 | __sctp_chunkmap_is_all_set(const __u32 *chunkmap, unsigned int n) |
b9f61b16 JE |
84 | { |
85 | unsigned int i; | |
86 | for (i = 0; i < n; ++i) | |
87 | if (chunkmap[i] != ~0U) | |
1ffad83d MR |
88 | return 0; |
89 | return 1; | |
b9f61b16 | 90 | } |
2e4e6a17 HW |
91 | |
92 | #endif /* _XT_SCTP_H_ */ | |
93 |