batadv_send_skb_to_orig(9)

📦 version 7.3.1, in nixpkgs unstable

💅 batadv_send_skb_to_orig — Kernel API Manual, bestie edition ✨

okay so real talk, this is a page from the Kernel API Manual, and it's about one little function in batman-adv that lowkey does the whole "where does this packet even GO" thing. it's giving air-traffic-controller energy 🛫 and honestly? iconic.

🌸 NAME 🌸

batadv_send_skb_to_orig — look up the next hop and transmit the skb. that's it. that's the whole job. she finds the next-hop and yeets the packet on its way 💌

✨ SYNOPSIS ✨

int batadv_send_skb_to_orig (struct sk_buff *skb , struct
       batadv_orig_node *orig_node , struct batadv_hard_iface *recv_if );

three arguments, one return value, zero drama (mostly). 🫶

🎀 ARGUMENTS 🎀

  • skb — the packet that's getting transmitted, aka the whole point of the operation. this is the main character of the function ngl 👑
  • orig_node — the final destination of the packet. not "next hop" — the actual final destination. don't get it twisted, bestie 💅
  • recv_if — the interface that was used when receiving the packet, and yes it can be NULL — more on that in a sec 🙈

🦋 DESCRIPTION 🦋

so what actually happens? she looks up the best next-hop toward the originator you passed in (orig_node, remember her?), and then hands the skb off so the MAC header can get prepared. very "i got you, i'll take it from here" of her honestly 💁‍♀️

and here's the little caveat that matters: if the packet originated from this host, you can totally pass NULL as recv_if — and in that case no interface alternating is attempted. so like, no shuffling between interfaces, no fancy footwork, we're just going. periodt. ⭐

🔥 RETURN 🔥

three possible vibes, pay attention bestie:

  • a negative errno code on a failure 😭 (something went wrong, it did not slay)
  • -EINPROGRESS if the skb is buffered for later transmit — she's not gone yet, she's waiting 🕐
  • the NET_XMIT status returned by the lower routine, if the packet has been passed down — in which case the lower routine is the one reporting back, not us 💀

🌈 SEE ALSO 🌈

buckle up, this list is LONG and we're not skipping a single one — the whole squad is here:

iykyk 🧚

quick vibe check before you go: recv_if being NULL is only fine when the packet originated from this host. don't be out here passing NULL for no reason, bestie, that's not the move 🙈

and that's the page!! 🍓 sourced from the kernel file tree at ./net/batman-adv, dated October 2026, same batadv_send_skb_to_orig(9) energy as always — catch you in the next manpage, mwah 💖🎀💜

📦 where this page comes from