i40e_read_nvm_buffer_aq(9)

📦 version 7.3.1, in nixpkgs unstable

💅 i40e_read_nvm_buffer_aq(9) — from the Kernel API Manual

okay so bestie, welcome to the glow-up of i40e_read_nvm_buffer_aq(9), straight out of the Kernel API Manual. this one's a little NIC function that reads stuff out of Shadow RAM through the AQ, and honestly? she's lowkey iconic for it. let's get into it ✨

🌸 NAME

i40e_read_nvm_buffer_aq — reads a Shadow RAM buffer via AQ. that's it, that's the whole vibe 🎀

✨ SYNOPSIS

int i40e_read_nvm_buffer_aq (struct i40e_hw *hw , u16 offset , u16
*words , u16 *data );

like, four args, one int back. she's not complicated and we love that for her 💖

🫶 ARGUMENTS

  • hw — pointer to the HW structure. yes bestie, the whole hardware situation comes through here 👑
  • offset — the offset of the Shadow RAM word to read, valid range 0x000000 – 0x001FFF. don't go outside that range fr fr, it's giving "stay in your lane" 💅
  • words — sneaky dual-purpose param, pay attention: (in) it's the number of words to read; (out) it's the number of words actually read. so she goes in with one number and comes out with another 😭 that's main character energy right there
  • data — the words that got read out of the Shadow RAM. this is where the goodies land 🍓

🔥 DESCRIPTION

so the way that this works: she reads 16 bit words (that's your data buffer, babes) out of the SR using the i40e_read_nvm_aq method. no cap, that's the mechanism.

and the order of operations? chef's kiss — the buffer read is preceded by the NVM ownership take, and followed by the release. so she takes ownership, does her little read, then gives it back like a considerate queen. graceful. polite. iconic. 🌈

ngl, the take-ownership-and-release sandwich is the whole plot here — no buffer read happens without the NVM ownership take coming first 🧚

👑 SEE ALSO

okay this list is long long, so buckle up bestie — every single one of these is a real reference, don't come for me:

Kernel file ./drivers/net/ethernet/intel/i40e/i40e_nvm.c

and that's the whole page, bestie — go read some Shadow RAM, you absolute legend 🦋

mwah 💋 this lil sign-off comes to you from the source at <code>./drivers/net/ethernet/intel/i40e</code>, dated <strong>October 2026</strong> — born in the Kernel API Manual, raised on vibes. periodt. 🌟

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