i40e_update_nvm_checksum(9)

📦 version 7.3.1, in nixpkgs unstable

🎀 i40e_update_nvm_checksum 💅

okay bestie, so this is a page from the Kernel API Manual (yes, the kernel has lore too) and it's all about one lil function: i40e_update_nvm_checksum. Let's get into it ✨

🌸 NAME 🌸

i40e_update_nvm_checksum — it updates the NVM checksum. that's it. that's the whole vibe. short, sweet, does exactly what it says on the tin 🫶

✨ SYNOPSIS ✨

int i40e_update_nvm_checksum (struct i40e_hw *hw );

it returns an int (classic) and takes exactly one argument. no surprises, no drama 💅

🦋 ARGUMENTS 🦋

  • hw — a pointer to the hardware structure. like, the actual hardware representation you're working with. hand it over and let the function cook 🔥

💖 DESCRIPTION 💖

okay so this is the important part, pay attention bestie:

NVM ownership must be acquired before calling this function — like, you literally cannot skip this step — and it must be released on ARQ completion event reception by caller. so you, the caller, are on release duty. no ghosting the NVM 👑

and what does the function itself do? it will commit SR to NVM. periodt. that's the whole job 🌟

ngl, if you skip the ownership acquisition step you're gonna have a bad time — the docs are extremely clear that it has to happen first 🙈

🌈 SEE ALSO 🌈

so there's a lot of sibling functions here, and honestly they're all giving family reunion energy. the kernel file lives at ./drivers/net/ethernet/intel/i40e/i40e_nvm.c — go say hi to the source code if you want the deep lore 📖

like, the whole nvmupd squad is here. iconic. main character energy from every single one of them honestly 👑

and that's the page!! 🎀 it came out of the kernel source tree at ./drivers/net/ethernet/intel/i40e, dated October 2026 — so mark your calendars, bestie, and go update those checksums responsibly 💜✨🦋

📦 where this page comes from