emac_poll(9)

📦 version 7.3.1, in nixpkgs unstable

✨ emac_poll — the Kernel API Manual glow-up ✨

Okay bestie, so this one's from the Kernel API Manual section nine, and it's literally all about emac_poll 💅

🌸 NAME 🌸

emac_poll — the EMAC NAPI Poll function, and yes that's the whole name, she's concise 👑

🦋 SYNOPSIS 🦋

int emac_poll (struct napi_struct *napi , int budget );

🎀 ARGUMENTS 🎀

  • napi — a pointer to the napi_struct that contains The DaVinci EMAC network adapter. Yes, "The" is capitalized, it's giving main character energy 🫶
  • budget — the number of receive packets to process, as told by the NAPI layer. You don't get to pick this, NAPI hands it to you, respect the assignment 💀

🔥 DESCRIPTION 🔥

So this is a NAPI Poll function, and it's implemented to process packets as per budget — like, the budget is sacred, no cap.

The way it works: we check the type of interrupt on the device 👀 and accordingly call the TX or RX packet processing functions. We follow the budget for RX processing, and we also put a cap on the number of TX pkts processed through a config param. Iconic multitasking honestly.

The NAPI schedule function is called if more packets are pending — because she never leaves packets hanging, periodt ✨

And what does it return? The number of packets received (in most cases; else TX pkts — rarely). "Rarely" is doing a lot of work in that sentence but ok we love a mysterious queen 🙈

💜 SEE ALSO 💜

Kernel file ./drivers/net/ethernet/ti/davinci_emac.c — start there, bestie, that's the source of truth 🍓

Then we got the whole friend group, no one gets left behind:

💖 that's the whole page, go read the kernel source and slay 💖

This little beauty lives in ./drivers/net/ethernet/ti and the version footprint says October 2026 — so yeah, from the future, obviously 🌈⭐ stay hydrated and happy polling, bestie 🧚‍♀️👑

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