wx_clean_rx_irq(9)

📦 version 7.3.1, in nixpkgs unstable

💅 wx_clean_rx_irq(9) — like, the Kernel API Manual page you actually wanna read 🎀

okay bestie, buckle up, because this is wx_clean_rx_irq from the Kernel API Manual and it's honestly kind of a big deal — it's the little function that scoops finished packets out of your Rx ring. no cap. let's get into it ✨

🌸 NAME 🌸

wx_clean_rx_irq — Clean completed descriptors from Rx ring - bounce buf

(it cleans up the Rx ring, and the whole vibe is "bounce buffer." iykyk 💅)

🦋 SYNOPSIS 🦋

int wx_clean_rx_irq (struct wx_q_vector *q_vector , struct wx_ring
*rx_ring , int budget );

literally three things go in, one int comes out. it's giving "simple queen" energy 👑

🍓 ARGUMENTS 🍓

  • q_vector — the structure holding all the interrupt and ring info. it's the main character keeping everyone organized 🫶
  • rx_ring — the rx descriptor ring where we're transacting packets. this is the actual hangout spot 🌈
  • budget — the total limit on how many packets we're allowed to process. think of it as the snack budget for the session, and no, you can't go over 🍓

🔥 DESCRIPTION 🔥

so this function is doing a "bounce buffer" approach to Rx interrupt processing, and honestly? iconic. ✨

the whole flex here is that on systems where IOMMU access has expensive overhead, this gives you a way to avoid that overhead — by keeping the page's mapping to the system alive instead of redoing it constantly. it's like leaving your shoes by the door instead of digging through the closet every single time. efficiency queen 💅

and yes, it returns the amount of work completed — so the caller knows exactly how much got done. no guessing, fr fr 💖

👑 SEE ALSO 👑

the kernel file lives right here, bestie:

Kernel file ./drivers/net/ethernet/wangxun/libwx/wx_lib.c

and now the friend group — every single one of these, no skipping, we don't do that here 🫶:

like, that's the whole group chat. everyone showed up. 🎀

and that's the page!! 🧚 source file is ./drivers/net/ethernet/wangxun..., dated October 2026, and the manual is the Kernel API Manual — mwah, slay, go read your descriptor rings responsibly, ily! 💜🌈⭐

📦 where this page comes from