STRUCT NFT_SET_ESTIMATE(9)

💖 struct nft_set_estimate(9) — the Kernel API Manual era 💖

okay so welcome to the group chat bestie, this is a page straight outta the Kernel API Manual and it's all about struct nft_set_estimate 🎀 — literally the receipts for how much memory a set is gonna eat and how fast it's gonna go. ngl it's a short one, we love a low-effort icon ✨

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🌸 NAME 🌸

struct nft_set_estimate — estimation of memory and performance characteristics

like, it's giving "how much RAM is this vibe gonna cost me and is it gonna be fast" 💅

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🦋 SYNOPSIS 🦋

struct nft_set_estimate {
    u64 size;
    enum nft_set_class      lookup;
    enum nft_set_class      space;
 };

no cap, that's the whole struct. three members. main character energy in a tiny package 😭

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🎀 Members 🎀

• size — the required memory, fr fr. this is the actual amount of memory needed. 🍓
• lookup — the lookup performance class. iykyk, it tells you how speedy the lookups are gonna be. ⭐
• space — the memory class. the vibe check on how much space this thing is taking up. 🌈

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👑 SEE ALSO 👑

it lives in the kernel file ./include/net/netfilter/nf_tables.h, and honestly the friend group is huge — here's literally every single one of them, bestie, I would never leave anyone out 🫶

• struct nft_verdict(9)
• struct nft_regs(9)
• struct nft_ctx(9)
• struct nft_userdata(9)
• struct nft_set_elem(9)
• enum nft_iter_type(9)
• struct nft_set_desc(9)
• enum nft_set_class(9)
• struct nft_expr(9)
• struct nft_set_ops(9)
• struct nft_set_type(9)
• struct nft_set(9)
• struct nft_set_binding(9)
• enum nft_set_extensions(9)
• struct nft_set_ext_type(9)
• struct nft_set_ext_tmpl(9)
• struct nft_set_ext(9)
• struct nft_expr_type(9)
• struct nft_expr_ops(9)
• struct nft_rule(9)
• struct nft_chain_validate_state(9)
• struct nft_chain(9)
• struct nft_chain_type(9)
• struct nft_base_chain(9)
• struct nft_table(9)
• struct nft_object_hash_key(9)
• struct nft_object(9)
• struct nft_object_type(9)
• struct nft_object_ops(9)
• struct nft_flowtable(9)
• struct nft_traceinfo(9)
• struct nft_trans(9)
• struct nft_trans_hook(9)
• struct nft_trans_binding(9)

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bestie reminder: it's a struct page, so there's no exit status, no signals, no environment variables, no flags to memorize. just the three members above. we ate and left no crumbs 💀✨

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mwah, that's a wrap! sending you off with a cute lil sign-off — this one's from ./include/net/netfilter, dated October 2026, and it's the struct nft_set_estimate(9) page. stay iconic, stay estimated 💜🧚