1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
#ifndef NFTABLES_TCPOPT_H
#define NFTABLES_TCPOPT_H
#include <proto.h>
#include <exthdr.h>
#include <statement.h>
extern struct expr *tcpopt_expr_alloc(const struct location *loc,
unsigned int kind, unsigned int field);
extern void tcpopt_init_raw(struct expr *expr, uint8_t type,
unsigned int offset, unsigned int len,
uint32_t flags);
extern bool tcpopt_find_template(struct expr *expr, unsigned int offset,
unsigned int len);
/* TCP option numbers used on wire */
enum tcpopt_kind {
TCPOPT_KIND_EOL = 0,
TCPOPT_KIND_NOP = 1,
TCPOPT_KIND_MAXSEG = 2,
TCPOPT_KIND_WINDOW = 3,
TCPOPT_KIND_SACK_PERMITTED = 4,
TCPOPT_KIND_SACK = 5,
TCPOPT_KIND_TIMESTAMP = 8,
TCPOPT_KIND_ECHO = 8,
TCPOPT_KIND_MD5SIG = 19,
TCPOPT_KIND_MPTCP = 30,
TCPOPT_KIND_FASTOPEN = 34,
__TCPOPT_KIND_MAX,
/* extra oob info, internal to nft */
TCPOPT_KIND_SACK1 = 256,
TCPOPT_KIND_SACK2 = 257,
TCPOPT_KIND_SACK3 = 258,
};
/* Internal identifiers */
enum tcpopt_common {
TCPOPT_COMMON_KIND,
TCPOPT_COMMON_LENGTH,
};
enum tcpopt_maxseg {
TCPOPT_MAXSEG_KIND,
TCPOPT_MAXSEG_LENGTH,
TCPOPT_MAXSEG_SIZE,
};
enum tcpopt_timestamp {
TCPOPT_TS_KIND,
TCPOPT_TS_LENGTH,
TCPOPT_TS_TSVAL,
TCPOPT_TS_TSECR,
};
enum tcpopt_windowscale {
TCPOPT_WINDOW_KIND,
TCPOPT_WINDOW_LENGTH,
TCPOPT_WINDOW_COUNT,
};
enum tcpopt_hdr_field_sack {
TCPOPT_SACK_KIND,
TCPOPT_SACK_LENGTH,
TCPOPT_SACK_LEFT,
TCPOPT_SACK_RIGHT,
TCPOPT_SACK_LEFT1,
TCPOPT_SACK_RIGHT1,
TCPOPT_SACK_LEFT2,
TCPOPT_SACK_RIGHT2,
TCPOPT_SACK_LEFT3,
TCPOPT_SACK_RIGHT3,
};
enum tcpopt_hdr_mptcp_common {
TCPOPT_MPTCP_KIND,
TCPOPT_MPTCP_LENGTH,
TCPOPT_MPTCP_SUBTYPE,
};
extern const struct exthdr_desc *tcpopt_protocols[__TCPOPT_KIND_MAX];
#endif /* NFTABLES_TCPOPT_H */
|
