#ifndef _NET_NF_TABLES_OFFLOAD_H
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#define _NET_NF_TABLES_OFFLOAD_H
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#include <net/flow_offload.h>
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#include <net/netfilter/nf_tables.h>
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enum nft_offload_reg_flags {
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NFT_OFFLOAD_F_NETWORK2HOST = (1 << 0),
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};
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struct nft_offload_reg {
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u32 key;
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u32 len;
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u32 base_offset;
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u32 offset;
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u32 flags;
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struct nft_data data;
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struct nft_data mask;
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};
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enum nft_offload_dep_type {
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NFT_OFFLOAD_DEP_UNSPEC = 0,
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NFT_OFFLOAD_DEP_NETWORK,
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NFT_OFFLOAD_DEP_TRANSPORT,
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};
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struct nft_offload_ctx {
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struct {
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enum nft_offload_dep_type type;
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__be16 l3num;
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u8 protonum;
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} dep;
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unsigned int num_actions;
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struct net *net;
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struct nft_offload_reg regs[NFT_REG32_15 + 1];
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};
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void nft_offload_set_dependency(struct nft_offload_ctx *ctx,
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enum nft_offload_dep_type type);
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void nft_offload_update_dependency(struct nft_offload_ctx *ctx,
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const void *data, u32 len);
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struct nft_flow_key {
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struct flow_dissector_key_basic basic;
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struct flow_dissector_key_control control;
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union {
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struct flow_dissector_key_ipv4_addrs ipv4;
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struct flow_dissector_key_ipv6_addrs ipv6;
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};
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struct flow_dissector_key_ports tp;
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struct flow_dissector_key_ip ip;
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struct flow_dissector_key_vlan vlan;
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struct flow_dissector_key_vlan cvlan;
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struct flow_dissector_key_eth_addrs eth_addrs;
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struct flow_dissector_key_meta meta;
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} __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */
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struct nft_flow_match {
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struct flow_dissector dissector;
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struct nft_flow_key key;
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struct nft_flow_key mask;
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};
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struct nft_flow_rule {
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__be16 proto;
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struct nft_flow_match match;
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struct flow_rule *rule;
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};
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void nft_flow_rule_set_addr_type(struct nft_flow_rule *flow,
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enum flow_dissector_key_id addr_type);
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struct nft_rule;
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struct nft_flow_rule *nft_flow_rule_create(struct net *net, const struct nft_rule *rule);
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void nft_flow_rule_destroy(struct nft_flow_rule *flow);
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int nft_flow_rule_offload_commit(struct net *net);
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#define NFT_OFFLOAD_MATCH_FLAGS(__key, __base, __field, __len, __reg, __flags) \
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(__reg)->base_offset = \
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offsetof(struct nft_flow_key, __base); \
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(__reg)->offset = \
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offsetof(struct nft_flow_key, __base.__field); \
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(__reg)->len = __len; \
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(__reg)->key = __key; \
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(__reg)->flags = __flags;
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#define NFT_OFFLOAD_MATCH(__key, __base, __field, __len, __reg) \
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NFT_OFFLOAD_MATCH_FLAGS(__key, __base, __field, __len, __reg, 0)
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#define NFT_OFFLOAD_MATCH_EXACT(__key, __base, __field, __len, __reg) \
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NFT_OFFLOAD_MATCH(__key, __base, __field, __len, __reg) \
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memset(&(__reg)->mask, 0xff, (__reg)->len);
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bool nft_chain_offload_support(const struct nft_base_chain *basechain);
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int nft_offload_init(void);
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void nft_offload_exit(void);
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#endif
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