batadv_backbone_hash_find(9)

💅 batadv_backbone_hash_find — the Kernel API Manual page, but make it make sense ✨

okay so this is batadv_backbone_hash_find(9) from the Kernel API Manual, and bestie, it's a whole little function that goes digging in a hash table for you. Let's get into it 🫶

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🌸 NAME 🌸

batadv_backbone_hash_find — literally just looks for a backbone gateway in the hash 🔍

No cap, that's the whole job description.

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✨ SYNOPSIS ✨

struct batadv_bla_backbone_gw * batadv_backbone_hash_find (struct
batadv_priv *bat_priv , const u8 *addr , unsigned short vid );

it's giving "give me three things and I'll give you a pointer (maybe)". 👑

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🎀 ARGUMENTS 🎀

• bat_priv — the bat priv 💖 this is the one carrying all the mesh interface information, so like, the main character of the struct world.
• addr — the address of the originator ✨ yes that address, the one you're hunting for.
• vid — the VLAN ID 🌈 because nothing in networking is ever complete without a VLAN ID, apparently.

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💅 RETURN 💅

backbone gateway if found, or NULL otherwise 🫠

that's it. that's the return value. found = a gateway, not found = NULL, and honestly the NULL case is the vibe check failing 😭

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🔥 SEE ALSO 🔥

first up, the source file you should absolutely go read:

• Kernel file ./net/batman-adv/bridge_loop_avoidance.c 📂

and then the entire friend group 🧚 (yes, all of them, don't skip, iykwim):

• batadv_choose_claim(9), batadv_choose_backbone_gw(9), batadv_compare_backbone_gw(9), batadv_compare_claim(9)
• batadv_backbone_gw_release(9), batadv_backbone_gw_put(9), batadv_claim_release(9), batadv_claim_put(9)
• batadv_claim_hash_find(9)
• batadv_bla_del_backbone_claims(9), batadv_bla_send_claim(9), batadv_bla_loopdetect_report(9)
• batadv_bla_get_backbone_gw(9), batadv_bla_update_own_backbone_gw(9)
• batadv_bla_answer_request(9), batadv_bla_send_request(9), batadv_bla_send_announce(9)
• batadv_bla_add_claim(9), batadv_bla_claim_get_backbone_gw(9), batadv_bla_del_claim(9)
• batadv_handle_announce(9), batadv_handle_request(9), batadv_handle_unclaim(9), batadv_handle_claim(9)
• batadv_check_claim_group(9), batadv_bla_process_claim(9)
• batadv_bla_purge_backbone_gw(9), batadv_bla_purge_claims(9)
• batadv_bla_update_orig_address(9), batadv_bla_send_loopdetect(9), batadv_bla_status_update(9)
• batadv_bla_periodic_work(9), batadv_bla_init(9)
• batadv_bla_check_duplist(9), batadv_bla_check_ucast_duplist(9), batadv_bla_check_bcast_duplist(9)
• batadv_bla_is_backbone_gw_orig(9), batadv_bla_is_backbone_gw(9)
• batadv_bla_free(9), batadv_bla_loopdetect_check(9)
• batadv_bla_rx(9), batadv_bla_tx(9)
• batadv_bla_claim_dump_entry(9), batadv_bla_claim_dump_bucket(9), batadv_bla_claim_dump(9)
• batadv_bla_backbone_dump_entry(9), batadv_bla_backbone_dump_bucket(9), batadv_bla_backbone_dump(9)
• batadv_bla_check_claim(9)

like, that's the whole bridge_loop_avoidance extended universe and you will be reading it 💀 (affectionate)

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ngl, if you came here looking for flags or config options — there are none. this is a plain C function, bestie. options are for man pages of the userland variety 🙈

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and that's the page!! shipped from ./net/batman-adv, dated October 2026 — go forth and find those backbone gateways, you absolute icon 🌟💜