nfp_cpp_area_readl(9)

📦 version 7.3.1, in nixpkgs unstable

💅 nfp_cpp_area_readl — Kernel API Manual, but make it make sense ✨

okay so bestie, listen. we're in Kernel API Manual territory today, and the function we're stanning is nfp_cpp_area_readl. it's a little guy that reads a u32 word out of an area. that's it. that's the whole vibe. but the way it does it? iconic. let's get into it 🫶

🌸 NAME 🌸

nfp_cpp_area_readl — Read a u32 word from an area

no cap, that's literally the whole job description. one (1) u32 word. from an area. slay. 💅

✨ SYNOPSIS ✨

int nfp_cpp_area_readl (struct nfp_cpp_area *area , unsigned long offset
, u32 *value );

yes the spacing is a little chaotic, but we love her anyway 🎀 copy it exactly, fr fr.

🦋 ARGUMENTS 🦋

  • area — the CPP Area handle 💖 this is your main character. the area you're reading out of.
  • offset — Offset into area 🌸 where in the area you're poking. yes, everything's relative, iykyk.
  • value — Pointer to read buffer ⭐ it's a pointer to where the read value lands. that's the whole deal.

🔥 RETURN 🔥

0 on success, or -ERRNO 😭 so like... zero means we ate. anything negative means something went sideways and the errno's got the receipts.

ngl bestie, always check the return value. 0 = good vibes, -ERRNO = go read the error code before you start spiraling 💀

🌈 SEE ALSO 🌈

okay this list is LOWKEY enormous, but every single one of these is required reading, so let's give them all their moment 👑

like I said. a whole friend group. go say hi to all of them 💜

and that's the page, bestie 🎀 source/version line was ./drivers/net/ethernet/netrono... and the date on this one is October 2026 — so yeah, she's from the future, we don't ask questions. nfp_cpp_area_readl(9) out. go read your u32. mwah 💋

📦 where this page comes from