pipapo_resize(9)

💖 pipapo_resize(9) 💖

okay so bestie, welcome to the Kernel API Manual ✨ — today's main character energy is all about pipapo_resize, and she is literally here to handle a lookup table, a mapping table, or both 💅. no cap, if the field's tables need a resize glow-up, this is the function. fr fr.

🌸 NAME 🌸

pipapo_resize — Resize lookup or mapping table, or both. that's the vibe check, bestie 🦋.

✨ SYNOPSIS ✨

int pipapo_resize (struct nft_pipapo_field *f , unsigned int old_rules ,
       unsigned int rules );

🎀 ARGUMENTS 🎀

okay so here's the cast, and every single one matters, iykyk:

• f — Field containing lookup and mapping tables. she's the whole field, periodt.
• old_rules — Previous amount of rules in field. lowkey important context.
• rules — New amount of rules. highkey the whole point.

💅 DESCRIPTION 💅

so what does she actually do? she can increase, decrease, or maintain tables size depending on the new amount of rules, and then copy data over ✨. it's giving resize plus data migration, and honestly? iconic.

and the important bit: in case the new size is smaller, she throws away data for the highest-numbered rules 😭. literally yeeting the highest-numbered rule data, no cap. that part is super important.

🔥 RETURN 🔥

0 on success, -ENOMEM on allocation failure. that's the tea: clean 0 when it slays, sad -ENOMEM when allocation fails 😭.

👑 SEE ALSO 👑

the whole squad of related reads, iykyk 👑:

• Kernel file ./net/netfilter/nft_set_pipapo.c Theory of Operation(9)
• 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_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_map(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)

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xoxo, your Kernel API Manual bestie 💖 — source/version: ./net/netfilter; date: October 2026 ✨. slay and read your docs, periodt 💅.