batadv_mcast...w_push_tvlvs(9)

📦 version 7.3.1, in nixpkgs unstable

💅 batadv_mcast_forw_push_tvlvs(9) — the Kernel API Manual glow-up 🎀

okay so this is a page from the Kernel API Manual (the batadv_mcast...w_push_tvlvs(9) one, yes the name is literally truncated with ..., that's just how it's filed bestie, we don't ask questions 🌸). It's a function in the batman-adv multicast forwarding saga, and it does exactly one iconic little job: it pushes a multicast tracker TVLV onto an skb. periodt.

✨ SYNOPSIS ✨

int batadv_mcast_forw_push_tvlvs (struct batadv_priv *bat_priv ,
                                  struct sk_buff *skb ,
                                  unsigned short vid ,
                                  int is_routable ,
                                  int count ,
                                  unsigned short *tvlv_len );

like literally that's the whole signature, no cap 🫶

🌈 ARGUMENTS 🌈

  • bat_priv — the bat priv holding all the mesh interface information. it's giving "main character data structure" 👑
  • skb — the skb we're pushing the tracker TVLV onto. that's the canvas, bestie 🎨
  • vid — the vlan identifier 💜
  • is_routable — indicates whether the destination is routable 🧭
  • count — the number of originators the multicast packet needs to be sent to 🔢
  • tvlv_len — stores the amount of currently pushed TVLV bytes 📏

🦋 DESCRIPTION 🦋

so what it does is: pushes a multicast tracker TVLV onto the given skb, and that includes the collected destination MAC addresses and the generic TVLV header. two-for-one slay ✨

💀 RETURN 💀

  • -ENOMEM if there is not enough skb headroom available 😭 (the skb said "no room, not today")
  • otherwise, on success, 0 💖

🔥 SEE ALSO 🔥

the kernel file itself lives at ./net/batman-adv/multicast_forw.c — go read it, iykyk 📖

and here's the whole friend group, all of them, in order, no one left out 🫶:

okay that's the whole page, you ate it up bestie 💅✨

sign-off time 🎀 this one's from ./net/batman-adv, dated October 2026, and it's filed under batadv_mcast...w_push_tvlvs(9). bye bye, drink water, go read your skb headroom 🌸🦋

📦 where this page comes from