atl2_sw_init(9)

📦 version 7.3.1, in nixpkgs unstable

💅 atl2_sw_init — the Kernel API Manual page, bestie edition

okay so you found atl2_sw_init(9) in the Kernel API Manual and you're like "what does this even do" — don't worry, I got you 🫶 this is the one that sets up the adapter's software brain before anything fun happens.

✨ NAME ✨

atl2_sw_init — literally "initialize general software structures", and the structure in question is struct atl2_adapter 💖 (yes bestie, the general ones — the vibes-level setup, not the hardware rings)

🌸 SYNOPSIS 🌸

int atl2_sw_init (struct atl2_adapter *adapter );

it returns an int, it takes one pointer, that's the whole flex 😌 keep it exactly like that, spaces and all, that's the signature fr fr.

🎀 ARGUMENTS 🎀

  • adapter — the board private structure you're initializing 👑 this is the main character of the whole call, so hand it over correctly.

🦋 DESCRIPTION 🦋

so atl2_sw_init initializes the Adapter private data structure. that's it, that's the job — no cap 💅

the fields get initialized based on PCI device information and OS network device settings (the MTU size 👀). so it's peeking at what the PCI layer told it about the hardware, and peeking at what the network stack decided the MTU should be, then filling in the struct accordingly. iconic behaviour, lowkey.

no drama here — this is the calm, tidy "get your struct in order" step. it's giving preparation. it's giving setup arc. 🌈

🔥 SEE ALSO 🔥

the kernel file itself lives right here, bookmark it bestie:

./drivers/net/ethernet/atheros/atlx/atl2.c

and the whole friend group 🫶:

⭐ lil sign-off: this page comes from the source path ./drivers/net/ethernet/atheros... and it's dated October 2026 💜 go forth and initialize your structs, bestie, you're gonna slay 🧚✨

📦 where this page comes from