batadv_hash_remove(9)

💅 batadv_hash_remove(9) — like, the Kernel API Manual page, bestie 🎀

okay so this is batadv_hash_remove(9) from the Kernel API Manual, and honestly? it's giving "small but mighty". it takes stuff out of a hash table. that's the whole gig. let's get into it ✨

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✨ SYNOPSIS ✨

void * batadv_hash_remove (struct batadv_hashtable *hash ,
batadv_hashdata_compare_cb compare , batadv_hashdata_choose_cb choose ,
void *data );

literally just four things going in, and you get a void * coming back out. we love a function with main character energy 👑

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🌸 ARGUMENTS 🌸

• hash — the hash table. the vibe container. your whole situation lives in here 💖
• compare — a callback that decides whether two hash elements are identical. like, are you the same person? vibe check 🦋
• choose — a callback that calculates the hash index. it picks where things go. the matchmaker of the operation 💫
• data — the data you pass to the aforementioned callbacks as an argument. yeah, both of them. it gets handed to compare and choose, no cap 🫶

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💜 DESCRIPTION 💜

so here's the cute little hack that makes this whole thing work: data can literally be the structure you use with just the key filled in. that's it. that's enough.

we just need the key for comparing — the rest of the struct can be an empty little shell and it's still iconic. no need to fill everything out, bestie, the key is doing all the heavy lifting 💅

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⭐ RETURN ⭐

on success, it returns a pointer to the data — so you get to remove the used structure yourself, main character energy, the cleanup is yours 🧚

on error? NULL. that's it. NULL means things did not slay 😭

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🌈 SEE ALSO 🌈

Kernel file ./net/batman-adv/hash.h — go read it, iykyk

• batadv_hashdata_compare_cb(9)
• batadv_hashdata_choose_cb(9)
• batadv_hashdata_free_cb(9)
• struct batadv_hashtable(9)
• batadv_hash_add(9)

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and that's the page!! mwah 💋 huge shoutout to ./net/batman-adv for bringing us this banger, dated October 2026 — mark your calendars, periodt 🔥👑🌸