1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _NET_NF_TABLES_CORE_H
3 #define _NET_NF_TABLES_CORE_H
5 #include <net/netfilter/nf_tables.h>
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;
19 int nf_tables_core_module_init(void);
20 void nf_tables_core_module_exit(void);
22 struct nft_cmp_fast_expr {
24 enum nft_registers sreg:8;
28 struct nft_immediate_expr {
30 enum nft_registers dreg:8;
34 /* Calculate the mask for the nft_cmp_fast expression. On big endian the
35 * mask needs to include the *upper* bytes when interpreting that data as
36 * something smaller than the full u32, therefore a cpu_to_le32 is done.
38 static inline u32 nft_cmp_fast_mask(unsigned int len)
40 return cpu_to_le32(~0U >> (FIELD_SIZEOF(struct nft_cmp_fast_expr,
41 data) * BITS_PER_BYTE - len));
44 extern const struct nft_expr_ops nft_cmp_fast_ops;
47 enum nft_payload_bases base:8;
50 enum nft_registers dreg:8;
53 struct nft_payload_set {
54 enum nft_payload_bases base:8;
57 enum nft_registers sreg:8;
63 extern const struct nft_expr_ops nft_payload_fast_ops;
65 extern struct static_key_false nft_counters_enabled;
66 extern struct static_key_false nft_trace_enabled;
68 #endif /* _NET_NF_TABLES_CORE_H */