batadv_dat_...ng_arp_reply(9)

💅 NAME

batadv_dat_snoop_outgoing_arp_reply — okay so it snoops the ARP reply and then fills the DHT. That's the whole vibe. ✨

🫶 SYNOPSIS

void batadv_dat_snoop_outgoing_arp_reply (struct batadv_priv *bat_priv ,
struct sk_buff *skb );

🌸 ARGUMENTS

• bat_priv — the bat priv, bestie. It's carrying all the mesh interface information, like the group chat admin of structs.
• skb — the packet you want checked. Yes, that packet.

🎀 DESCRIPTION

⚠️ Warning, and I need you to actually read this one: this function may reallocate the skb data buffer via batadv_dat_get_vid/...

So like — any pointer into the skb data (for example, one you got from skb->data or eth_hdr) before this call? Consider it invalid afterwards. Literally invalid. You have to reacquire it. No keeping stale pointers, that's not the move. 💀

💜 SEE ALSO

Kernel file ./net/batman-adv/distributed-arp-table.c — and the whole friend group:

• enum 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_hw_dst(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_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 the whole page, go reacquire your pointers and slay 💅✨ Source/version: ./net/batman-adv — dated October 2026 — and this iconic entry is batadv_dat_...ng_arp_reply(9). Periodt. 👑🦋