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[mirror_ubuntu-eoan-kernel.git] / include / net / netfilter / nf_tables_core.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _NET_NF_TABLES_CORE_H
3 #define _NET_NF_TABLES_CORE_H
4
5 #include <net/netfilter/nf_tables.h>
6
7 extern struct nft_expr_type nft_imm_type;
8 extern struct nft_expr_type nft_cmp_type;
9 extern struct nft_expr_type nft_lookup_type;
10 extern struct nft_expr_type nft_bitwise_type;
11 extern struct nft_expr_type nft_byteorder_type;
12 extern struct nft_expr_type nft_payload_type;
13 extern struct nft_expr_type nft_dynset_type;
14 extern struct nft_expr_type nft_range_type;
15 extern struct nft_expr_type nft_meta_type;
16 extern struct nft_expr_type nft_rt_type;
17 extern struct nft_expr_type nft_exthdr_type;
18
19 #ifdef CONFIG_NETWORK_SECMARK
20 extern struct nft_object_type nft_secmark_obj_type;
21 #endif
22
23 int nf_tables_core_module_init(void);
24 void nf_tables_core_module_exit(void);
25
26 struct nft_cmp_fast_expr {
27 u32 data;
28 enum nft_registers sreg:8;
29 u8 len;
30 };
31
32 struct nft_immediate_expr {
33 struct nft_data data;
34 enum nft_registers dreg:8;
35 u8 dlen;
36 };
37
38 /* Calculate the mask for the nft_cmp_fast expression. On big endian the
39 * mask needs to include the *upper* bytes when interpreting that data as
40 * something smaller than the full u32, therefore a cpu_to_le32 is done.
41 */
42 static inline u32 nft_cmp_fast_mask(unsigned int len)
43 {
44 return cpu_to_le32(~0U >> (FIELD_SIZEOF(struct nft_cmp_fast_expr,
45 data) * BITS_PER_BYTE - len));
46 }
47
48 extern const struct nft_expr_ops nft_cmp_fast_ops;
49
50 struct nft_payload {
51 enum nft_payload_bases base:8;
52 u8 offset;
53 u8 len;
54 enum nft_registers dreg:8;
55 };
56
57 struct nft_payload_set {
58 enum nft_payload_bases base:8;
59 u8 offset;
60 u8 len;
61 enum nft_registers sreg:8;
62 u8 csum_type;
63 u8 csum_offset;
64 u8 csum_flags;
65 };
66
67 extern const struct nft_expr_ops nft_payload_fast_ops;
68
69 extern struct static_key_false nft_counters_enabled;
70 extern struct static_key_false nft_trace_enabled;
71
72 extern struct nft_set_type nft_set_rhash_type;
73 extern struct nft_set_type nft_set_hash_type;
74 extern struct nft_set_type nft_set_hash_fast_type;
75 extern struct nft_set_type nft_set_rbtree_type;
76 extern struct nft_set_type nft_set_bitmap_type;
77
78 struct nft_expr;
79 struct nft_regs;
80 struct nft_pktinfo;
81 void nft_meta_get_eval(const struct nft_expr *expr,
82 struct nft_regs *regs, const struct nft_pktinfo *pkt);
83 void nft_cmp_eval(const struct nft_expr *expr,
84 struct nft_regs *regs, const struct nft_pktinfo *pkt);
85 void nft_lookup_eval(const struct nft_expr *expr,
86 struct nft_regs *regs, const struct nft_pktinfo *pkt);
87 void nft_payload_eval(const struct nft_expr *expr,
88 struct nft_regs *regs, const struct nft_pktinfo *pkt);
89 void nft_immediate_eval(const struct nft_expr *expr,
90 struct nft_regs *regs, const struct nft_pktinfo *pkt);
91 void nft_bitwise_eval(const struct nft_expr *expr,
92 struct nft_regs *regs, const struct nft_pktinfo *pkt);
93 void nft_range_eval(const struct nft_expr *expr,
94 struct nft_regs *regs, const struct nft_pktinfo *pkt);
95 void nft_byteorder_eval(const struct nft_expr *expr,
96 struct nft_regs *regs, const struct nft_pktinfo *pkt);
97 void nft_dynset_eval(const struct nft_expr *expr,
98 struct nft_regs *regs, const struct nft_pktinfo *pkt);
99 void nft_rt_get_eval(const struct nft_expr *expr,
100 struct nft_regs *regs, const struct nft_pktinfo *pkt);
101 #endif /* _NET_NF_TABLES_CORE_H */