ipc_tx_send(9)

📦 version 7.3.1, in nixpkgs unstable

💌 ipc_tx_send(9) — the Kernel API Manual, bestie edition 💌

Okay so we're in the ipc_tx_send(9) page of the Kernel API Manual and honestly? It's a short one. A little snack. A lil' bite-sized function that does exactly one thing and does it well. Let's get into it 🫶

✨ NAME ✨

ipc_tx_send — the IPC tx send function, periodt 💅

Like, that's it. That's the whole name. It sends. Over IPC. Transmit-style. Iconic behaviour honestly.

🌸 SYNOPSIS 🌸

void ipc_tx_send (void *prm );

Look at her. Returns void, takes one void *. No drama, no frills, no return value to check. She just goes 💨

🎀 ARGUMENTS 🎀

  • prm — a pointer to the client device instance 💖 lowkey the main character of this whole function, ngl. It's void *, so it's giving "I trust you to know what you're doing" energy.

🦋 DESCRIPTION 🦋

So what does she actually do? She sends a message over IPC. That's the vibe check and she passes ✅

But here's the part you actually need to know, bestie: if your message size is bigger than the IPC FIFO size, the message gets split into fragments — and then all of those fragments get sent one by one. Like, in order. One at a time. Not all at once, not in a chaotic little pile, one by one 🔥

No cap, that's the whole description. Short queen. We stan a function with no unnecessary lore 💜

🌈 SEE ALSO 🌈

The kernel file lives right here, bestie — go peek at the source if you want the full tea:

Kernel file ./drivers/hid/intel-ish-hid/ishtp/client.c

And here's the whole friend group, all the siblings and cousins in the same little ishtp clique 👑:

That's twenty-one little icons in one list, and yes I counted 💀 go read them all, iykyk.

sign-off szn 🌸✨

This lil' masterpiece lives in ./drivers/hid/intel-ish-hid/ishtp, dated October 2026, and it's the ipc_tx_send(9) page of the Kernel API Manual 💖 Go forth, fragment your messages, send them one by one, and slay 💅🦋

📦 where this page comes from