dpaa2_io_service_acquire(9)

📦 version 7.3.1, in nixpkgs unstable

👑 dpaa2_io_service_acquire(9) — the Kernel API Manual glow-up ✨

okay so this is a page from the Kernel API Manual, bestie — it's dpaa2_io_service_acquire(9) and it's literally about scooping buffers out of a buffer pool. short page, but we're gonna treat it with the respect it deserves 🫶

🌸 NAME 🌸

dpaa2_io_service_acquire — acquire buffers from a buffer pool. that's it. that's the whole job. girl is a buffer pool robber 💅

🎀 SYNOPSIS 🎀

int dpaa2_io_service_acquire (struct dpaa2_io *d , u16 bpid , u64
*buffers , unsigned int num_buffers );

like, she takes a DPIO object, a pool id, a place to stash the addresses, and a count. and she returns an int. simple. iconic. no notes. ✨

🦋 ARGUMENTS 🦋

  • d — the given DPIO object. this is your main character, the whole reason we're here 👑
  • bpid — the buffer pool id. it's a u16, so you know, small and mighty 🌈
  • buffers — the buffer addresses for acquired buffers. this is where the goodies land, u64 * style 💖
  • num_buffers — the expected number of the buffers to acquire. an unsigned int, because we're being optimistic 🍓

⭐ DESCRIPTION ⭐

so here's the vibe check on the return value, and it's giving two different meanings, so pay attention bestie 👀

  • return a negative error code if the command failed. bad day. we don't love that 😭
  • otherwise, it returns the number of buffers acquired, which may be less than the number requested — like, she tried her best, okay??
fr fr: if the buffer pool is empty, this will return zero. not an error, just zero. empty pool, empty hands, no drama 💀

💜 SEE ALSO 💜

first up, the actual kernel file this lives in — go read it, iykyk:

Kernel file ./drivers/soc/fsl/dpio/dpio-service.c

and then the whole friend group 🫶 these are all (9) pages, all suspended-core royalty:

go read them all, bestie. collect the whole set, it's giving pokémon but for kernel networking 🧚

and that's the page!! mwah 💋 sign-off time: this one comes from ./drivers/soc/fsl/dpio, dated October 2026, and it's — say it with me — dpaa2_io_service_acquire(9). periodt. 🌟

📦 where this page comes from