pipapo_map(9)

💅 NAME

okay so bestie, pipapo_map is literally the function that inserts rules in mapping tables, mapping them between fields. that's it, that's the whole gig — she takes ya rules and files them into the mapping table, field by field. no cap. 🎀

✨ SYNOPSIS

void pipapo_map (struct nft_pipapo_match *m , union
nft_pipapo_map_bucket map[NFT_PIPAPO_MAX_FIELDS] , struct
nft_pipapo_elem *e );

she returns void — no little return value to obsess over, she just does the thing. icon behavior honestly. ⭐

🦋 ARGUMENTS

• m — the matching data, and yes the mapping table is chillin' inside her too. she's the whole package, not just one thing 💖
• map — the table of rule maps: an array of the first rule and the amount of rules in the next field that a given rule maps to, for each field. that's the max, NFT_PIPAPO_MAX_FIELDS worth of entries — one little map-y bucket per field 🗺️✨
• e — for the last field, this is the nft_set_ext pointer that the matching rules map to. she only shows up at the end, main character energy fr 💅

🌈 SEE ALSO

like, go read all of these, i'm not kidding, they're all connected:

• the kernel file ./net/netfilter/nft_set_pipapo.c + Theory of Operation(9) — start here bestie, it's the lore 🔥
• pipapo_refill(9)
• pipapo_get_slow(9)
• pipapo_get(9)
• nft_pipapo_lookup(9)
• nft_pipapo_get(9)
• pipapo_realloc_mt(9)
• lt_calculate_size(9)
• pipapo_resize(9)
• pipapo_bucket_set(9)
• pipapo_lt_4b_to_8b(9)
• pipapo_lt_8b_to_4b(9)
• pipapo_lt_bits_adjust(9)
• pipapo_insert(9)
• pipapo_step_diff(9)
• pipapo_step_after_end(9)
• pipapo_base_sum(9)
• pipapo_expand(9)
• pipapo_free_scratch(9)
• pipapo_realloc_scratch(9)
• pipapo_maybe_clone(9)
• nft_pipapo_insert(9)
• pipapo_clone(9)
• pipapo_rules_same_key(9)
• pipapo_unmap(9)
• pipapo_drop(9)
• pipapo_gc_scan(9)
• pipapo_gc_queue(9)
• pipapo_free_fields(9)
• pipapo_reclaim_match(9)
• nft_pipapo_commit(9)
• nft_pipapo_activate(9)
• nft_pipapo_deactivate(9)
• nft_pipapo_flush(9)
• pipapo_get_boundaries(9)
• pipapo_match_field(9)
• nft_pipapo_remove(9)
• nft_pipapo_do_walk(9)
• nft_pipapo_walk(9)
• nft_pipapo_privsize(9)
• nft_pipapo_estimate(9)
• nft_pipapo_init(9)
• nft_set_pipapo_match_destroy(9)
• nft_pipapo_destroy(9)
• nft_pipapo_gc_init(9)

ngl if you got here by grepping the source, you're already doing amazing — this one lives in ./net/netfilter and it's October 2026 energy, so go be a kernel girlie 🫶

🌸 mwah, that's the whole page, go insert some rules bestie 💜