[mirror_ubuntu-jammy-kernel.git] / include / net / netfilter / nf_tables_offload.h

#ifndef _NET_NF_TABLES_OFFLOAD_H
#define _NET_NF_TABLES_OFFLOAD_H

#include <net/flow_offload.h>
#include <net/netfilter/nf_tables.h>

struct nft_offload_reg {
	u32		key;
	u32		len;
	u32		base_offset;
	u32		offset;
	struct nft_data	mask;
};

enum nft_offload_dep_type {
	NFT_OFFLOAD_DEP_UNSPEC	= 0,
	NFT_OFFLOAD_DEP_NETWORK,
	NFT_OFFLOAD_DEP_TRANSPORT,
};

struct nft_offload_ctx {
	struct {
		enum nft_offload_dep_type	type;
		__be16				l3num;
		u8				protonum;
	} dep;
	unsigned int				num_actions;
	struct nft_offload_reg			regs[NFT_REG32_15 + 1];
};

void nft_offload_set_dependency(struct nft_offload_ctx *ctx,
				enum nft_offload_dep_type type);
void nft_offload_update_dependency(struct nft_offload_ctx *ctx,
				   const void *data, u32 len);

struct nft_flow_key {
	struct flow_dissector_key_basic			basic;
	union {
		struct flow_dissector_key_ipv4_addrs	ipv4;
		struct flow_dissector_key_ipv6_addrs	ipv6;
	};
	struct flow_dissector_key_ports			tp;
	struct flow_dissector_key_ip			ip;
	struct flow_dissector_key_vlan			vlan;
	struct flow_dissector_key_eth_addrs		eth_addrs;
} __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */

struct nft_flow_match {
	struct flow_dissector	dissector;
	struct nft_flow_key	key;
	struct nft_flow_key	mask;
};

struct nft_flow_rule {
	__be16			proto;
	struct nft_flow_match	match;
	struct flow_rule	*rule;
};

#define NFT_OFFLOAD_F_ACTION	(1 << 0)

struct nft_rule;
struct nft_flow_rule *nft_flow_rule_create(const struct nft_rule *rule);
void nft_flow_rule_destroy(struct nft_flow_rule *flow);
int nft_flow_rule_offload_commit(struct net *net);

#define NFT_OFFLOAD_MATCH(__key, __base, __field, __len, __reg)		\
	(__reg)->base_offset	=					\
		offsetof(struct nft_flow_key, __base);			\
	(__reg)->offset		=					\
		offsetof(struct nft_flow_key, __base.__field);		\
	(__reg)->len		= __len;				\
	(__reg)->key		= __key;				\
	memset(&(__reg)->mask, 0xff, (__reg)->len);

#endif
Commit	Line	Data
c9626a2c PNA	1	#ifndef _NET_NF_TABLES_OFFLOAD_H
	2	#define _NET_NF_TABLES_OFFLOAD_H
	3
	4	#include <net/flow_offload.h>
	5	#include <net/netfilter/nf_tables.h>
	6
	7	struct nft_offload_reg {
	8	u32 key;
	9	u32 len;
	10	u32 base_offset;
	11	u32 offset;
	12	struct nft_data mask;
	13	};
	14
	15	enum nft_offload_dep_type {
	16	NFT_OFFLOAD_DEP_UNSPEC = 0,
	17	NFT_OFFLOAD_DEP_NETWORK,
	18	NFT_OFFLOAD_DEP_TRANSPORT,
	19	};
	20
	21	struct nft_offload_ctx {
	22	struct {
	23	enum nft_offload_dep_type type;
	24	__be16 l3num;
	25	u8 protonum;
	26	} dep;
	27	unsigned int num_actions;
	28	struct nft_offload_reg regs[NFT_REG32_15 + 1];
	29	};
	30
	31	void nft_offload_set_dependency(struct nft_offload_ctx *ctx,
	32	enum nft_offload_dep_type type);
	33	void nft_offload_update_dependency(struct nft_offload_ctx *ctx,
	34	const void *data, u32 len);
	35
	36	struct nft_flow_key {
	37	struct flow_dissector_key_basic basic;
	38	union {
	39	struct flow_dissector_key_ipv4_addrs ipv4;
	40	struct flow_dissector_key_ipv6_addrs ipv6;
	41	};
	42	struct flow_dissector_key_ports tp;
	43	struct flow_dissector_key_ip ip;
	44	struct flow_dissector_key_vlan vlan;
	45	struct flow_dissector_key_eth_addrs eth_addrs;
	46	} __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */
	47
	48	struct nft_flow_match {
	49	struct flow_dissector dissector;
	50	struct nft_flow_key key;
	51	struct nft_flow_key mask;
	52	};
	53
	54	struct nft_flow_rule {
	55	__be16 proto;
	56	struct nft_flow_match match;
	57	struct flow_rule *rule;
	58	};
	59
	60	#define NFT_OFFLOAD_F_ACTION (1 << 0)
	61
	62	struct nft_rule;
	63	struct nft_flow_rule nft_flow_rule_create(const struct nft_rule rule);
	64	void nft_flow_rule_destroy(struct nft_flow_rule *flow);
65	int nft_flow_rule_offload_commit(struct net *net);
66
67	#define NFT_OFFLOAD_MATCH(__key, __base, __field, __len, __reg) \
68	(__reg)->base_offset = \
69	offsetof(struct nft_flow_key, __base); \
70	(__reg)->offset = \
71	offsetof(struct nft_flow_key, __base.__field); \
72	(__reg)->len = __len; \
73	(__reg)->key = __key; \
74	memset(&(__reg)->mask, 0xff, (__reg)->len);
75
76	#endif