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>
6 #include <linux/indirect_call_wrapper.h>
8 extern struct nft_expr_type nft_imm_type;
9 extern struct nft_expr_type nft_cmp_type;
10 extern struct nft_expr_type nft_counter_type;
11 extern struct nft_expr_type nft_lookup_type;
12 extern struct nft_expr_type nft_bitwise_type;
13 extern struct nft_expr_type nft_byteorder_type;
14 extern struct nft_expr_type nft_payload_type;
15 extern struct nft_expr_type nft_dynset_type;
16 extern struct nft_expr_type nft_range_type;
17 extern struct nft_expr_type nft_meta_type;
18 extern struct nft_expr_type nft_rt_type;
19 extern struct nft_expr_type nft_exthdr_type;
20 extern struct nft_expr_type nft_last_type;
22 #ifdef CONFIG_NETWORK_SECMARK
23 extern struct nft_object_type nft_secmark_obj_type;
25 extern struct nft_object_type nft_counter_obj_type;
27 int nf_tables_core_module_init(void);
28 void nf_tables_core_module_exit(void);
30 struct nft_bitwise_fast_expr {
37 struct nft_cmp_fast_expr {
45 struct nft_cmp16_fast_expr {
53 struct nft_immediate_expr {
59 /* Calculate the mask for the nft_cmp_fast expression. On big endian the
60 * mask needs to include the *upper* bytes when interpreting that data as
61 * something smaller than the full u32, therefore a cpu_to_le32 is done.
63 static inline u32 nft_cmp_fast_mask(unsigned int len)
65 return cpu_to_le32(~0U >> (sizeof_field(struct nft_cmp_fast_expr,
66 data) * BITS_PER_BYTE - len));
69 extern const struct nft_expr_ops nft_cmp_fast_ops;
70 extern const struct nft_expr_ops nft_cmp16_fast_ops;
73 enum nft_payload_bases base:8;
79 struct nft_payload_set {
80 enum nft_payload_bases base:8;
89 extern const struct nft_expr_ops nft_payload_fast_ops;
91 extern const struct nft_expr_ops nft_bitwise_fast_ops;
93 extern struct static_key_false nft_counters_enabled;
94 extern struct static_key_false nft_trace_enabled;
96 extern const struct nft_set_type nft_set_rhash_type;
97 extern const struct nft_set_type nft_set_hash_type;
98 extern const struct nft_set_type nft_set_hash_fast_type;
99 extern const struct nft_set_type nft_set_rbtree_type;
100 extern const struct nft_set_type nft_set_bitmap_type;
101 extern const struct nft_set_type nft_set_pipapo_type;
102 extern const struct nft_set_type nft_set_pipapo_avx2_type;
104 #ifdef CONFIG_RETPOLINE
105 bool nft_rhash_lookup(const struct net *net, const struct nft_set *set,
106 const u32 *key, const struct nft_set_ext **ext);
107 bool nft_rbtree_lookup(const struct net *net, const struct nft_set *set,
108 const u32 *key, const struct nft_set_ext **ext);
109 bool nft_bitmap_lookup(const struct net *net, const struct nft_set *set,
110 const u32 *key, const struct nft_set_ext **ext);
111 bool nft_hash_lookup_fast(const struct net *net,
112 const struct nft_set *set,
113 const u32 *key, const struct nft_set_ext **ext);
114 bool nft_hash_lookup(const struct net *net, const struct nft_set *set,
115 const u32 *key, const struct nft_set_ext **ext);
116 bool nft_set_do_lookup(const struct net *net, const struct nft_set *set,
117 const u32 *key, const struct nft_set_ext **ext);
120 nft_set_do_lookup(const struct net *net, const struct nft_set *set,
121 const u32 *key, const struct nft_set_ext **ext)
123 return set->ops->lookup(net, set, key, ext);
127 /* called from nft_pipapo_avx2.c */
128 bool nft_pipapo_lookup(const struct net *net, const struct nft_set *set,
129 const u32 *key, const struct nft_set_ext **ext);
130 /* called from nft_set_pipapo.c */
131 bool nft_pipapo_avx2_lookup(const struct net *net, const struct nft_set *set,
132 const u32 *key, const struct nft_set_ext **ext);
134 void nft_counter_init_seqcount(void);
139 void nft_meta_get_eval(const struct nft_expr *expr,
140 struct nft_regs *regs, const struct nft_pktinfo *pkt);
141 void nft_cmp_eval(const struct nft_expr *expr,
142 struct nft_regs *regs, const struct nft_pktinfo *pkt);
143 void nft_lookup_eval(const struct nft_expr *expr,
144 struct nft_regs *regs, const struct nft_pktinfo *pkt);
145 void nft_payload_eval(const struct nft_expr *expr,
146 struct nft_regs *regs, const struct nft_pktinfo *pkt);
147 void nft_immediate_eval(const struct nft_expr *expr,
148 struct nft_regs *regs, const struct nft_pktinfo *pkt);
149 void nft_bitwise_eval(const struct nft_expr *expr,
150 struct nft_regs *regs, const struct nft_pktinfo *pkt);
151 void nft_range_eval(const struct nft_expr *expr,
152 struct nft_regs *regs, const struct nft_pktinfo *pkt);
153 void nft_byteorder_eval(const struct nft_expr *expr,
154 struct nft_regs *regs, const struct nft_pktinfo *pkt);
155 void nft_dynset_eval(const struct nft_expr *expr,
156 struct nft_regs *regs, const struct nft_pktinfo *pkt);
157 void nft_rt_get_eval(const struct nft_expr *expr,
158 struct nft_regs *regs, const struct nft_pktinfo *pkt);
159 void nft_counter_eval(const struct nft_expr *expr, struct nft_regs *regs,
160 const struct nft_pktinfo *pkt);
161 #endif /* _NET_NF_TABLES_CORE_H */