netlbl_mgmt_protocols_cb(9)

📦 version 7.3.1, in nixpkgs unstable

💅 netlbl_mgmt_protocols_cb(9)

okay so bestie, welcome to netlbl_mgmt_protocols_cb(9) — straight outta the Kernel API Manual, and yes it's as niche and as iconic as it sounds. grab your matcha, we're writing NetLink messages 🍓

✨ NAME ✨

netlbl_mgmt_protocols_cb — literally the function that writes out one single PROTOCOL message response. that's the whole vibe. one. individual. message. 💅

🦋 SYNOPSIS 🦋

int netlbl_mgmt_protocols_cb (struct sk_buff *skb , struct
       netlink_callback *cb , u32 protocol );

yep, that's the whole signature, no cap. three args in, an int out 🎀

🌸 ARGUMENTS 🌸

  • skb — the skb you're writing to. this is the canvas, the main character, the thing that receives your art 🎨
  • cb — the NETLINK callback. it's giving "context handler energy," and it's doing the most so you don't have to ✨
  • protocol — the NetLabel protocol you want to use in the message. pick your fighter 🥊

💖 DESCRIPTION 💖

so here's the tea, bestie: this function is meant to be used in conjunction with netlbl_mgmt_protocols to answer an application's PROTOCOLS message. they're a duo, a package deal, a two-piece combo meal 🍔🍟

and what does it return? okay so:

  • on success, it returns the size of the message — slay 💅
  • on failure, you get negative values — not slay, we don't love that for you 😭
fr fr, negative return = something went wrong. check it, don't ignore it 🙈

🔥 SEE ALSO 🔥

peep the kernel file ./net/netlabel/netlabel_mgmt.c and then go stan the whole friend group:

✨ and that's the whole page, bestie ✨

this little legend came from ./net/netlabel, dated October 2026, and it's the netlbl_mgmt_protocols_cb(9) moment we all deserved. go write that PROTOCOL message, you absolute icon 👑💜🫶

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