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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /include/net/netfilter/nf_tables_offload.h | |
parent | Initial commit. (diff) | |
download | linux-upstream.tar.xz linux-upstream.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'include/net/netfilter/nf_tables_offload.h')
-rw-r--r-- | include/net/netfilter/nf_tables_offload.h | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/include/net/netfilter/nf_tables_offload.h b/include/net/netfilter/nf_tables_offload.h new file mode 100644 index 000000000..1058f38e2 --- /dev/null +++ b/include/net/netfilter/nf_tables_offload.h @@ -0,0 +1,99 @@ +#ifndef _NET_NF_TABLES_OFFLOAD_H +#define _NET_NF_TABLES_OFFLOAD_H + +#include <net/flow_offload.h> +#include <net/netfilter/nf_tables.h> + +enum nft_offload_reg_flags { + NFT_OFFLOAD_F_NETWORK2HOST = (1 << 0), +}; + +struct nft_offload_reg { + u32 key; + u32 len; + u32 base_offset; + u32 offset; + u32 flags; + struct nft_data data; + 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 net *net; + 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; + struct flow_dissector_key_control control; + 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_vlan cvlan; + struct flow_dissector_key_eth_addrs eth_addrs; + struct flow_dissector_key_meta meta; +} __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; +}; + +void nft_flow_rule_set_addr_type(struct nft_flow_rule *flow, + enum flow_dissector_key_id addr_type); + +struct nft_rule; +struct nft_flow_rule *nft_flow_rule_create(struct net *net, 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_FLAGS(__key, __base, __field, __len, __reg, __flags) \ + (__reg)->base_offset = \ + offsetof(struct nft_flow_key, __base); \ + (__reg)->offset = \ + offsetof(struct nft_flow_key, __base.__field); \ + (__reg)->len = __len; \ + (__reg)->key = __key; \ + (__reg)->flags = __flags; + +#define NFT_OFFLOAD_MATCH(__key, __base, __field, __len, __reg) \ + NFT_OFFLOAD_MATCH_FLAGS(__key, __base, __field, __len, __reg, 0) + +#define NFT_OFFLOAD_MATCH_EXACT(__key, __base, __field, __len, __reg) \ + NFT_OFFLOAD_MATCH(__key, __base, __field, __len, __reg) \ + memset(&(__reg)->mask, 0xff, (__reg)->len); + +bool nft_chain_offload_support(const struct nft_base_chain *basechain); + +int nft_offload_init(void); +void nft_offload_exit(void); + +#endif |