i40e_dbg_command_write(9)

📦 version 7.3.1, in nixpkgs unstable

💖 i40e_dbg_command_write — a Kernel API Manual moment 💖

Ok so bestie, welcome to the Kernel API Manual page for i40e_dbg_command_write(9) — and yes the name is a whole mouthful, we know, but it's giving "debugfs write handler" and honestly? Obsessed. 🦋

The NAME, per the manpage gods: i40e_dbg_command_write — write into command datum. Short. Iconic. Lowkey mysterious. Let's unpack it. ✨

✨ SYNOPSIS ✨

ssize_t i40e_dbg_command_write (struct file *filp , const char __user
*buffer , size_t count , loff_t *ppos );

That's the whole signature, no cap — ssize_t return, four args, cooked exactly like the original. Don't touch the commas, they're doing their thing. 💅

🎀 ARGUMENTS 🎀

  • filp — the opened file. It's the file that's literally open right now, main character energy, showing up to the function. 🫶
  • buffer — where to find the user's data. Yes bestie, the data lives in userspace and this is where you go looking for it. 👀
  • count — the length of the user's data. Like, how many bytes we're working with. Not vibes — actual length. 🍓
  • ppos — file position offset. The little "where are we in the file" bookmark. ⭐

🌈 SEE ALSO 🌈

The manpage points at the Kernel file:

./drivers/net/ethernet/intel/i40e/i40e_debugfs.c

And then the whole friend group shows up — every one of these, in order, fr fr:

Go read them, they're all serving in the same file and the whole i40e debugfs squad ate. 🔥

💀 Reminder to my future self: this page only documents the function signature and arguments — do not go inventing behaviour for it, bestie. Say what's here and nothing more. 😭

That's the page, periodt. 🎀 Signing off with the source/version deets and the date, exactly as the footer had them: this one comes to you from ./drivers/net/ethernet/intel/i40e, dated October 2026, manual name Kernel API Manual, and the title again for the people in the back — i40e_dbg_command_write(9). Mwah. 💜🌸

📦 where this page comes from