batadv_check...ement_packet(9)

📦 version 7.3.1, in nixpkgs unstable

💅 batadv_check_management_packet(9) — a Kernel API Manual moment

okay so bestie, welcome to the batadv_check_management_packet(9) page, straight out of the Kernel API Manual ✨ this one's short but she is important, so pay attention 🫶

🌸 NAME 🌸

batadv_check_management_packet — checks the preconditions for management packets, no cap 💅 she's the bouncer at the club door, vibe-checking your management packets before they get in 🎀

✨ SYNOPSIS ✨

bool batadv_check_management_packet (struct sk_buff *skb , struct
batadv_hard_iface *hard_iface , int header_len );

like, she returns a bool, takes three things, and that's the whole fit 🔥

🦋 ARGUMENTS 🦋

  • skb — the incoming packet buffer, aka the actual packet bestie is carrying 💌
  • hard_iface — the incoming hard interface, the physical-ish doorway it came through 🚪
  • header_len — the minimal header length of this packet type, like the minimum height requirement on the ride, iconic 📏

💀 DESCRIPTION 💀

⚠️ Warning: this function may reallocate the skb data buffer via skb_cow/skb_linearize/… so like, heads up, bestie 😭

Any pointer into the skb data — for example one you got from skb->data or eth_hdr — that existed before this call must be considered invalid afterwards and has to be reacquired. not me gaslighting your pointers but fr fr, they're toast after this call 💅 reacquire them, don't be weird about it 🙈

⭐ RETURN ⭐

Returns true when the management preconditions are met, and false otherwise 👑 simple as that, she ate 🌈

🧚 SEE ALSO 🧚

Kernel file ./net/batman-adv/routing.c plus the whole friend group, iykyk:

and that's the whole page, bestie 💜 this lil' cutie lives in ./net/batman-adv, dated October 2026, and she's filed under batadv_check...ement_packet(9) — mwah, go check your preconditions 🎀✨

📦 where this page comes from