Contributors: 9
Author Tokens Token Proportion Commits Commit Proportion
Patrick McHardy 415 41.21% 6 15.00%
Florian Westphal 328 32.57% 12 30.00%
Pablo Neira Ayuso 158 15.69% 14 35.00%
Liping Zhang 41 4.07% 1 2.50%
Phil Sutter 28 2.78% 2 5.00%
Stefano Brivio 17 1.69% 2 5.00%
Christian Göttsche 13 1.29% 1 2.50%
Kristian Evensen 6 0.60% 1 2.50%
Greg Kroah-Hartman 1 0.10% 1 2.50%
Total 1007 40 


/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _NET_NF_TABLES_CORE_H
#define _NET_NF_TABLES_CORE_H

#include <net/netfilter/nf_tables.h>
#include <linux/indirect_call_wrapper.h>

extern struct nft_expr_type nft_imm_type;
extern struct nft_expr_type nft_cmp_type;
extern struct nft_expr_type nft_counter_type;
extern struct nft_expr_type nft_lookup_type;
extern struct nft_expr_type nft_bitwise_type;
extern struct nft_expr_type nft_byteorder_type;
extern struct nft_expr_type nft_payload_type;
extern struct nft_expr_type nft_dynset_type;
extern struct nft_expr_type nft_range_type;
extern struct nft_expr_type nft_meta_type;
extern struct nft_expr_type nft_rt_type;
extern struct nft_expr_type nft_exthdr_type;
extern struct nft_expr_type nft_last_type;
extern struct nft_expr_type nft_objref_type;
extern struct nft_expr_type nft_inner_type;

#ifdef CONFIG_NETWORK_SECMARK
extern struct nft_object_type nft_secmark_obj_type;
#endif
extern struct nft_object_type nft_counter_obj_type;

int nf_tables_core_module_init(void);
void nf_tables_core_module_exit(void);

struct nft_bitwise_fast_expr {
	u32			mask;
	u32			xor;
	u8			sreg;
	u8			dreg;
};

struct nft_cmp_fast_expr {
	u32			data;
	u32			mask;
	u8			sreg;
	u8			len;
	bool			inv;
};

struct nft_cmp16_fast_expr {
	struct nft_data		data;
	struct nft_data		mask;
	u8			sreg;
	u8			len;
	bool			inv;
};

struct nft_immediate_expr {
	struct nft_data		data;
	u8			dreg;
	u8			dlen;
};

extern const struct nft_expr_ops nft_cmp_fast_ops;
extern const struct nft_expr_ops nft_cmp16_fast_ops;

struct nft_ct {
	enum nft_ct_keys	key:8;
	enum ip_conntrack_dir	dir:8;
	u8			len;
	union {
		u8		dreg;
		u8		sreg;
	};
};

struct nft_payload {
	enum nft_payload_bases	base:8;
	u8			offset;
	u8			len;
	u8			dreg;
};

extern const struct nft_expr_ops nft_payload_fast_ops;

extern const struct nft_expr_ops nft_bitwise_fast_ops;

extern struct static_key_false nft_counters_enabled;
extern struct static_key_false nft_trace_enabled;

extern const struct nft_set_type nft_set_rhash_type;
extern const struct nft_set_type nft_set_hash_type;
extern const struct nft_set_type nft_set_hash_fast_type;
extern const struct nft_set_type nft_set_rbtree_type;
extern const struct nft_set_type nft_set_bitmap_type;
extern const struct nft_set_type nft_set_pipapo_type;
extern const struct nft_set_type nft_set_pipapo_avx2_type;

#ifdef CONFIG_RETPOLINE
bool nft_rhash_lookup(const struct net *net, const struct nft_set *set,
		      const u32 *key, const struct nft_set_ext **ext);
bool nft_rbtree_lookup(const struct net *net, const struct nft_set *set,
		       const u32 *key, const struct nft_set_ext **ext);
bool nft_bitmap_lookup(const struct net *net, const struct nft_set *set,
		       const u32 *key, const struct nft_set_ext **ext);
bool nft_hash_lookup_fast(const struct net *net,
			  const struct nft_set *set,
			  const u32 *key, const struct nft_set_ext **ext);
bool nft_hash_lookup(const struct net *net, const struct nft_set *set,
		     const u32 *key, const struct nft_set_ext **ext);
bool nft_set_do_lookup(const struct net *net, const struct nft_set *set,
		       const u32 *key, const struct nft_set_ext **ext);
#else
static inline bool
nft_set_do_lookup(const struct net *net, const struct nft_set *set,
		  const u32 *key, const struct nft_set_ext **ext)
{
	return set->ops->lookup(net, set, key, ext);
}
#endif

/* called from nft_pipapo_avx2.c */
bool nft_pipapo_lookup(const struct net *net, const struct nft_set *set,
		       const u32 *key, const struct nft_set_ext **ext);
/* called from nft_set_pipapo.c */
bool nft_pipapo_avx2_lookup(const struct net *net, const struct nft_set *set,
			    const u32 *key, const struct nft_set_ext **ext);

void nft_counter_init_seqcount(void);

struct nft_expr;
struct nft_regs;
struct nft_pktinfo;
void nft_meta_get_eval(const struct nft_expr *expr,
		       struct nft_regs *regs, const struct nft_pktinfo *pkt);
void nft_cmp_eval(const struct nft_expr *expr,
		  struct nft_regs *regs, const struct nft_pktinfo *pkt);
void nft_lookup_eval(const struct nft_expr *expr,
		     struct nft_regs *regs, const struct nft_pktinfo *pkt);
void nft_payload_eval(const struct nft_expr *expr,
		      struct nft_regs *regs, const struct nft_pktinfo *pkt);
void nft_immediate_eval(const struct nft_expr *expr,
			struct nft_regs *regs, const struct nft_pktinfo *pkt);
void nft_bitwise_eval(const struct nft_expr *expr,
		      struct nft_regs *regs, const struct nft_pktinfo *pkt);
void nft_range_eval(const struct nft_expr *expr,
		    struct nft_regs *regs, const struct nft_pktinfo *pkt);
void nft_byteorder_eval(const struct nft_expr *expr,
			struct nft_regs *regs, const struct nft_pktinfo *pkt);
void nft_dynset_eval(const struct nft_expr *expr,
		     struct nft_regs *regs, const struct nft_pktinfo *pkt);
void nft_rt_get_eval(const struct nft_expr *expr,
		     struct nft_regs *regs, const struct nft_pktinfo *pkt);
void nft_counter_eval(const struct nft_expr *expr, struct nft_regs *regs,
                      const struct nft_pktinfo *pkt);
void nft_ct_get_fast_eval(const struct nft_expr *expr,
			  struct nft_regs *regs, const struct nft_pktinfo *pkt);

enum {
	NFT_PAYLOAD_CTX_INNER_TUN	= (1 << 0),
	NFT_PAYLOAD_CTX_INNER_LL	= (1 << 1),
	NFT_PAYLOAD_CTX_INNER_NH	= (1 << 2),
	NFT_PAYLOAD_CTX_INNER_TH	= (1 << 3),
};

struct nft_inner_tun_ctx {
	u16	type;
	u16	inner_tunoff;
	u16	inner_lloff;
	u16	inner_nhoff;
	u16	inner_thoff;
	__be16	llproto;
	u8	l4proto;
	u8      flags;
};

int nft_payload_inner_offset(const struct nft_pktinfo *pkt);
void nft_payload_inner_eval(const struct nft_expr *expr, struct nft_regs *regs,
			    const struct nft_pktinfo *pkt,
			    struct nft_inner_tun_ctx *ctx);

void nft_objref_eval(const struct nft_expr *expr, struct nft_regs *regs,
		     const struct nft_pktinfo *pkt);
void nft_objref_map_eval(const struct nft_expr *expr, struct nft_regs *regs,
			 const struct nft_pktinfo *pkt);
#endif /* _NET_NF_TABLES_CORE_H */