nft_pipapo_a...lookup_8b_16(9)

📦 version 7.3.1, in nixpkgs unstable

💜 nft_pipapo_a...lookup_8b_16 (Kernel API Manual, bestie edition)

okay so, welcome to the Kernel API Manual — yes, that's the whole manual name, we're in the kernel docs now, it's giving big-brain energy and honestly? kinda iconic ✨

🌸 NAME 🌸

nft_pipapo_avx2_lookup_8b_16 — the AVX2-based lookup for 16 eight-bit groups. that's it, that's the vibe. she does one thing and she does it fast 💅

🦋 SYNOPSIS 🦋

int nft_pipapo_avx2_lookup_8b_16 (unsigned long *map , unsigned long
*fill , const struct nft_pipapo_field *f , int offset , const u8 *pkt ,
bool first , bool last );

🎀 ARGUMENTS 🎀

  • map — previous match result, used as the initial bitmap. like, the receipts from last time 💖
  • fill — destination bitmap that gets filled with the current match result. this one's getting stuffed 🫶
  • f — the field, containing lookup and mapping tables. the whole main character of the data structure world
  • offset — ignore buckets before the given index, no bits are filled there. literally doesn't care about anything earlier, boundaries bestie 🌸
  • pkt — packet data, a pointer to the input nftables register. the actual tea ☕
  • first — if this is the first field, don't source the previous result. fresh start energy ✨
  • last — last field: stop at the first match and return the bit index. no cap, she peaces out early 💀

👑 DESCRIPTION 👑

See nft_pipapo_avx2_lookup_4b_2. (yeah, go read her sibling, the lore is real 😭)

This one is used for 128-bit fields (i.e. IPv6 addresses). so if you're out here with a v6 address, this is your girl 🦋💖

🔥 RETURN 🔥

  • -1 on no match, periodt — nothing found, we go home 😔
  • the rule index of the match if last, otherwise the first long word index to be checked next (i.e. the first filled word) 🌟

🌈 SEE ALSO 🌈

Kernel file ./net/netfilter/nft_set_pipapo_avx2.c

and the whole squad, no one left behind:

and that's the whole page, bestie 💅💖 this one lives in ./net/netfilter and the version/date stamp on it is October 2026 — so yeah, certified, dated, and absolutely slaying. go forth and look up those 16 eight-bit groups 🧚✨🍓

📦 where this page comes from