batadv_mcas...ant_all_rtr6(9)

📦 version 7.3.1, in nixpkgs unstable

💖 batadv_mcast_forw_want_all_rtr6 💖

okay bestie, welcome to batadv_mcas...ant_all_rtr6(9) — that's the Kernel API Manual page for this one very specific mcast forwarding function, and yes the title is truncated like that, it's not a typo, it's just how the manpage generator woke up that morning 💅

✨ NAME ✨

batadv_mcast_forw_want_all_rtr6 — forward to nodes with want-all-rtr6

🦋 SYNOPSIS 🦋

int batadv_mcast_forw_want_all_rtr6 (struct batadv_priv *bat_priv ,
struct sk_buff *skb , unsigned short vid );

that's the whole signature, no cap. three args, one int return, iconic behavior 👑

🎀 ARGUMENTS 🎀

  • bat_priv — the bat priv with all the mesh interface information. it's literally the main character of the whole file, it knows everything about your mesh interfaces 🫶
  • skb — The multicast packet to transmit. this is the actual frame going out the door, so please treat it nicely 🍓
  • vid — the vlan identifier. yep, just the vlan id, keeping it cute and short 🌸

🌈 DESCRIPTION 🌈

so what does it actually do. it sends copies of a frame with multicast destination to any node with a BATADV_MCAST_WANT_NO_RTR6 flag unset. that's the lowkey important bit: the flag has to be unset for a node to get a copy — we're looking for the nodes that haven't said "no rtr6 pls" 🙈

and for each one of those destination nodes, a transmission is performed via a batman-adv unicast packet. so it's one unicast packet per destination node, fr fr — multicast frame in, a whole bunch of unicast transmissions out, that's the vibe 💫

🔥 RETURN 🔥

  • NET_XMIT_DROP — happens on memory allocation failure 😭 (rip, no memory, no packet)
  • NET_XMIT_SUCCESS — otherwise 💖

🧚 SEE ALSO 🧚

the kernel file itself lives at ./net/batman-adv/multicast.c, and here's the entire friend group, every single one, no skipping, we don't do that here ✨

like, the whole batadv_mcast_* family tree showed up to the group chat and honestly? obsessed 💜

and that's the page!! this little beauty lives in ./net/batman-adv, dated October 2026, and you found it under the name batadv_mcas...ant_all_rtr6(9) — mwah, go read the source bestie, ily, bye 🎀💖✨

📦 where this page comes from