idpf_prepare_cfg_txqs_msg(9)

📦 version 7.3.1, in nixpkgs unstable

💅 idpf_prepare_cfg_txqs_msg — the kernel API manual one, bestie

okay so you found your way into the idpf corner of the kernel, and this little helper is the one that packs up a message telling the driver how your Tx queues should be configured. no cap, it's a glow-up for a buffer. let's get into it ✨

✨ NAME ✨

idpf_prepare_cfg_txqs_msg — it prepares the message that describes how the selected Tx queues get configured 🎀

🦋 SYNOPSIS 🦋

u32 idpf_prepare_cfg_txqs_msg (u32 vport_id , void *buf , const void
       *pos , u32 num_chunks );

like, it hands you back a u32 and takes four things. that's the whole vibe check.

🌸 ARGUMENTS 🌸

  • vport_id — the ID of the virtual port that these queues are associated with. it's giving "which vport are we even talking about" energy 💜
  • buf — the buffer that's holding the message. this is where the assembled thing lives.
  • pos — a pointer to the first chunk describing the tx queue. literally the starting point, main character of the chunk lineup ⭐
  • num_chunks — how many chunks are in the message. count 'em, bestie 🔥

💖 DESCRIPTION 💖

so this is a helper function — a lil sidekick, if you will — for preparing the message that describes the configuration of Tx queues. that's it. that's the job. it doesn't configure anything itself, it just gets the message ready so somebody else can send it. lowkey humble, highkey essential 🫶

🌈 RETURN 🌈

it returns the total size of the prepared message. so, a u32, and it's the whole size. no dramatic twist, just the number 💅

👑 SEE ALSO 👑

the source lives in the kernel file ./drivers/net/ethernet/intel/idpf/idpf_virtchnl.c — and honestly the whole idpf friend group is here, so let me introduce you:

that's the whole page, bestie — that source lives over in ./drivers/net/ethernet/intel/idpf, the manual is the Kernel API Manual, and it's dated October 2026. go forth and prepare those Tx queue config messages, you absolute icon 💅✨🍓

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