STRUCT NFT_PIPAPO_FIELD(9)

💖 struct nft_pipapo_field(9) 💖

okay bestie, so this is a page from the Kernel API Manual — yes, the kernel, like, the actual kernel — and it's all about struct nft_pipapo_field. literally the lookup tables, mapping tables and all the related data for one single field. ngl it's a whole vibe of a struct. 🦋

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✨ NAME ✨

struct nft_pipapo_field — the lookup tables, the mapping tables and all the related data for a field. that's it, that's the whole thing 💅

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🌸 SYNOPSIS 🌸

struct nft_pipapo_field {
    unsigned int rules;
    unsigned int bsize;
    unsigned int rules_alloc;
    u8 groups;
    u8 bb;
    unsigned long *lt;
    union nft_pipapo_map_bucket *mt;
 };

like, look at her go 👑 every field accounted for, no notes.

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🎀 Members 🎀

okay so let's meet the whole cast, one by one, they're all main characters:

• rules — the number of inserted rules. how many rules are actually in there, fr fr.
• bsize — the size of each bucket in the lookup table, measured in longs. bucket sizes are in longs, not bytes, don't come for me, that's just how it is 💀
• rules_alloc — the number of allocated rules, and it is always >= rules. always. no exceptions, bestie, that's the rule about rules 🫶
• groups — the amount of bit groups. yep, groups of bits.
• bb — the number of bits grouped together in the lookup table buckets. bit-grouping realness ✨
• lt — the lookup table: 'groups' rows of buckets. like a little grid situation 🧚
• mt — the mapping table: exactly one bucket per rule. one rule, one bucket, periodt 💅

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🔥 SEE ALSO 🔥

go read these next, i'm obsessed with this little friend group:

• Kernel file ./net/netfilter/nft_set_pipapo.h
• union nft_pipapo_map_bucket(9)
• struct nft_pipapo_scratch(9)
• struct nft_pipapo_match(9)
• struct nft_pipapo(9)
• struct nft_pipapo_elem(9)
• pipapo_and_field_buckets_4bit(9)
• pipapo_and_field_buckets_8bit(9)
• pipapo_estimate_size(9)
• pipapo_resmap_init(9)

like, the whole pipapo cinematic universe, honestly 🌈⭐

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💜 tiny sign-off from your girl: this page lives under ./net/netfilter, it's dated October 2026, and it's officially titled struct nft_pipapo_field(9). write that down, bestie, it's giving study guide. slay 🍓💖