batadv_arp_hw_dst(9)

💅 batadv_arp_hw_dst — the kernel API manual, bestie edition 🎀

okay so this is a page from the Kernel API Manual, and the function we're stanning today is batadv_arp_hw_dst(9). it's a tiny little icon living in ./net/batman-adv/distributed-arp-table.c and it does exactly one (1) job. main character energy, honestly.

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✨ NAME ✨

batadv_arp_hw_dst — extract the hw_dst field from an ARP packet 🫶

like, that's the whole vibe. it reaches into an ARP packet and pulls out the hardware destination field. no cap.

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🌸 SYNOPSIS 🌸

u8 * batadv_arp_hw_dst (struct sk_buff *skb , int hdr_size );

that's the signature, copied exactly, don't come for me 💀

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🦋 ARGUMENTS 🦋

• skb — the ARP packet itself, babes. this is the buffer we're snooping through 💖
• hdr_size — the size of whatever possible header sits before the ARP packet. so like, the offset we gotta skip past to find the actual ARP bits. lowkey important, don't skip it ✨

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⭐ RETURN ⭐

it hands you back the value of the hw_dst field in the ARP packet. that's it. that's the return. a u8 * pointing at the goods 👑

ngl there's no error path listed here — the page just says you get the value of hw_dst. so don't be out here inventing failure modes, bestie 🙈

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🌈 SEE ALSO 🌈

literally the entire batman-adv phonebook, fr fr. first up it name-drops the kernel file and an enum:

./net/batman-adv/distributed-arp-table.c and enum

then all of these cuties:

• batadv_bootpop(9)
• enum batadv_boothtype(9)
• enum batadv_dhcpoptioncode(9)
• enum batadv_dhcptype(9)
• struct batadv_dhcp_packet(9)
• struct batadv_dhcp_header(9)
• struct batadv_dhcp_option_header(9)
• batadv_dat_start_timer(9)
• batadv_dat_entry_release(9)
• batadv_dat_entry_put(9)
• batadv_dat_to_purge(9)
• __batadv_dat_purge(9)
• batadv_dat_purge(9)
• batadv_compare_dat(9)
• batadv_arp_hw_src(9)
• batadv_arp_ip_src(9)
• batadv_arp_ip_dst(9)
• batadv_hash_dat(9)
• batadv_dat_entry_hash_find(9)
• batadv_dat_entry_add(9)
• batadv_dbg_arp(9)
• batadv_is_orig_node_eligible(9)
• batadv_choose_next_candidate(9)
• batadv_dat_select_candidates(9)
• batadv_dat_forward_data(9)
• batadv_dat_tvlv_container_update(9)
• batadv_dat_status_update(9)
• batadv_dat_tvlv_ogm_handler_v1(9)
• batadv_dat_hash_free(9)
• batadv_dat_init(9)
• batadv_dat_free(9)
• batadv_dat_cache_dump_entry(9)
• batadv_dat_cache_dump_bucket(9)
• batadv_dat_cache_dump(9)
• batadv_arp_get_type(9)
• batadv_dat_get_vid(9)
• batadv_dat_arp_create_reply(9)
• batadv_dat_snoop_outgoing_arp_request(9)
• batadv_dat_snoop_incoming_arp_request(9)
• batadv_dat_snoop_outgoing_arp_reply(9)
• batadv_dat_snoop_incoming_arp_reply(9)
• batadv_dat_check_dhcp_ipudp(9)
• batadv_dat_check_dhcp(9)
• batadv_dat_get_dhcp_message_type(9)
• batadv_dat_dhcp_get_yiaddr(9)
• batadv_dat_get_dhcp_chaddr(9)
• batadv_dat_put_dhcp(9)
• batadv_dat_check_dhcp_ack(9)
• batadv_dat_snoop_outgoing_dhcp_ack(9)
• batadv_dat_snoop_incoming_dhcp_ack(9)
• batadv_dat_drop_broadcast_packet(9)

okay that's a lot of friends but they're all valid, i checked 💅 go read them, iykyk.

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and that's the page!! 💖✨🎀 huge shoutout to the source ./net/batman-adv and this lil snapshot dated October 2026 — mwah, love u, bye bestie 🦋💜🍓