ENUM NFT_META_ATTRIBUTES(9)

okay so bestie, welcome to enum nft_meta_attributes(9) — yes that's the whole title, and yes it's from the Kernel API Manual, section 9, no cap. This is the netlink attribute enum for the nf_tables meta expression, and we're gonna read it together like it's the group chat 💅

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🌸 NAME 🌸

enum nft_meta_attributes — nf_tables meta expression netlink attributes ✨

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✨ SYNOPSIS ✨

enum nft_meta_attributes {
    NFTA_META_UNSPEC ,
    NFTA_META_DREG ,
    NFTA_META_KEY ,
    NFTA_META_SREG ,
    __NFTA_META_MAX

};

like, that's the whole struct, and it is giving "short but iconic" 🎀

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💅 CONSTANTS 💅

the constants are literally the main character here, so let's go one by one 🫶

• NFTA_META_UNSPEC — the source just hits you with -- undescribed -- 😭 that's it, that's the description, we know nothing and we respect it
• NFTA_META_DREG — the destination register, typed NLA_U32 🎯
• NFTA_META_KEY — the meta data item to load, and it's an NLA_U32, specifically a nft_meta_keys situation, iykyk 🔥
• NFTA_META_SREG — the source register, also NLA_U32 📥
• __NFTA_META_MAX — another -- undescribed -- bestie, the lore is simply not there 🙈

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🦋 SEE ALSO 🦋

first up, the kernel file itself, and yes it's exactly this:

Kernel file ./include/uapi/linux/netfilter/nf_tables.h enum

then the whole extended friend group of enums, and we are not skipping a single one, bestie, not one 👑

• nft_registers(9)
• nft_verdicts(9)
• nf_tables_msg_types(9)
• nft_list_attributes(9)
• nft_hook_attributes(9)
• nft_table_flags(9)
• nft_table_attributes(9)
• nft_chain_attributes(9)
• nft_rule_attributes(9)
• nft_rule_compat_flags(9)
• nft_rule_compat_attributes(9)
• nft_set_flags(9)
• nft_set_policies(9)
• nft_set_desc_attributes(9)
• nft_set_field_attributes(9)
• nft_set_attributes(9)
• nft_set_elem_flags(9)
• nft_set_elem_attributes(9)
• nft_set_elem_list_attributes(9)
• nft_data_types(9)
• nft_data_attributes(9)
• nft_verdict_attributes(9)
• nft_expr_attributes(9)
• nft_immediate_attributes(9)
• nft_bitwise_ops(9)
• nft_bitwise_attributes(9)
• nft_byteorder_ops(9)
• nft_byteorder_attributes(9)
• nft_cmp_ops(9)
• nft_cmp_attributes(9)
• nft_range_ops(9)
• nft_range_attributes(9)
• nft_lookup_attributes(9)
• nft_dynset_attributes(9)
• nft_payload_bases(9)
• nft_payload_csum_types(9)
• nft_payload_attributes(9)
• nft_exthdr_op(9)
• nft_exthdr_attributes(9)
• nft_meta_keys(9)
• nft_rt_keys(9)
• nft_hash_types(9)
• nft_hash_attributes(9)
• nft_rt_attributes(9)
• nft_socket_attributes(9)
• nft_ct_keys(9)
• nft_ct_attributes(9)
• nft_offload_attributes(9)
• nft_limit_attributes(9)
• nft_connlimit_attributes(9)
• nft_counter_attributes(9)
• nft_last_attributes(9)
• nft_log_attributes(9)
• nft_log_level(9)
• nft_queue_attributes(9)
• nft_quota_attributes(9)
• nft_secmark_attributes(9)
• nft_reject_types(9)
• nft_reject_inet_code(9)
• nft_reject_attributes(9)
• nft_nat_types(9)
• nft_nat_attributes(9)
• nft_tproxy_attributes(9)
• nft_masq_attributes(9)
• nft_redir_attributes(9)
• nft_dup_attributes(9)
• nft_fwd_attributes(9)
• nft_objref_attributes(9)
• nft_gen_attributes(9)
• nft_object_attributes(9)
• nft_flowtable_flags(9)
• nft_flowtable_attributes(9)
• nft_flowtable_hook_attributes(9)
• nft_osf_attributes(9)
• nft_synproxy_attributes(9)
• nft_devices_attributes(9)
• nft_trace_attributes(9)
• nft_ng_attributes(9)

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that's the whole thing, bestie, we ate and left zero crumbs 💖 source vibes come from ./include/uapi/linux/netfilter, dated October 2026, and that's the enum nft_meta_attributes(9) page — periodt 🎀✨