nft_dump_register(9)

✨ nft_dump_register(9) ✨

okay so bestie, this little icon is from the Kernel API Manual, and its whole vibe is: dump a register value to a netlink attribute. no cap, that’s the NAME. 💅

🌸 SYNOPSIS 🌸

int nft_dump_register (struct sk_buff *skb , unsigned int attr ,
       unsigned int reg );

🎀 ARGUMENTS 🎀

• skb — socket buffer 🫶
• attr — attribute number ✨
• reg — register number 💖

🦋 DESCRIPTION 🦋

Sooo it constructs a netlink attribute containing the register number. iconic behavior, honestly.

For compatibility reasons, register numbers that are a multiple of 4 get translated to the corresponding 128 bit register numbers. yes bestie, that’s the whole compatibility moment, and it ate. 🔥

💜 SEE ALSO 💜

Kernel file ./net/netfilter/nf_tables_api.c — and the little friend group is:

• nft_register_expr(9)
• nft_unregister_expr(9)
• nft_data_hold(9)
• nft_register_obj(9)
• nft_unregister_obj(9)
• nft_parse_u32_check(9)
• nft_data_init(9)
• nft_data_release(9)

mwah 💋 this page is dated October 2026, lives under ./net/netfilter, and is serving Kernel API Manual energy. bye bestie, go read the kernel file 🫶✨