batadv_dat_put_dhcp(9)

📦 version 7.3.1, in nixpkgs unstable

💅 batadv_dat_put_dhcp(9)

okay so real talk bestie, we're in the Kernel API Manual today — yes, that Kernel — and the star of the show is batadv_dat_put_dhcp. It's a function, it lives in the kernel, and it's about to take your DHCP packet's addresses and yeet them directly into the DHT and the DAT cache. no cap, she does both. 🫶

✨ NAME ✨

batadv_dat_put_dhcp — puts addresses from a DHCP packet into the DHT and DAT cache 💖

like... that's literally her whole job. she takes addresses out of a DHCP packet and files them where they belong. iconic behavior, honestly.

🦋 SYNOPSIS 🦋

void batadv_dat_put_dhcp (struct batadv_priv *bat_priv , u8 *chaddr ,
       __be32 yiaddr , u8 *hw_dst , __be32 ip_dst , unsigned short vid );

returns void, so she's not giving you a return value. she just does it. main character energy fr fr ✨

🎀 ARGUMENTS 🎀

  • bat_priv — the bat priv that's holding all the mesh interface information. she's the whole context babe, everything lives in here 💜
  • chaddr — the DHCP client MAC address. the client's hardware identity, slay
  • yiaddr — the DHCP client IP address. yep, "your IP address" — that's the vibe 🌸
  • hw_dst — the DHCP server MAC address. the one handing stuff out 👑
  • ip_dst — the DHCP server IP address. her numeric bestie
  • vid — VLAN identifier. because we stay segmented and organized, periodt 🧚

🔥 DESCRIPTION 🔥

So what she actually does: she adds the given MAC/IP pairs to the local DAT cache and then propagates them further into the DHT. two destinations, one function call, we love a multitasker 💅

And for the DHT propagation specifically — listen, this part is lowkey important — the client MAC + IP will appear as the ARP Reply transmitter, and hw_dst/ip_dst will appear as the target. that's the exact framing of the thing, no cap. don't get it twisted 🙈

🌈 SEE ALSO 🌈

Kernel file ./net/batman-adv/distributed-arp-table.c — go read the source bestie, it's giving lore ⭐

And here's the full friend group, every single one, nobody left behind:

like, that's the whole squad 😭 go read every one, iykyk 💀

okay that's the page!! this one came out of ./net/batman-adv and it's dated October 2026 — so mark your calendar bestie, and remember the title the whole time: batadv_dat_put_dhcp(9). mwah 💖🎀🦋

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