ice_mbx_vf_state_handler(9)

📦 version 7.3.1, in nixpkgs unstable

💅 ice_mbx_vf_state_handler(9) — the Kernel API Manual glow-up 🎀

okay so this is ice_mbx_vf_state_handler(9) from the Kernel API Manual, and she is literally the bouncer at the door of the malicious VF detection algorithm ✨ bestie, let's get into it.

✨ SYNOPSIS ✨

int ice_mbx_vf_state_handler (struct ice_hw *hw , struct ice_mbx_data
*mbx_data , struct ice_mbx_vf_info *vf_info , bool *report_malvf );

like, four args, one int return, no cap 🫶

🌸 ARGUMENTS 🌸

  • hw — pointer to the HW struct, the whole hardware vibe check 💖
  • mbx_data — pointer to the structure containing the mailbox data 📬
  • vf_info — the mailbox tracking structure for the VF in question 👀
  • report_malvf — a boolean output that tells you whether this VF should be reported 🚨 (yes, it's an output, she writes back to you, main character energy)

🦋 DESCRIPTION 🦋

so this function is the entry point for the malicious VF detection algorithm 🕵️‍♀️ — she handles the different states and the state transitions of the algorithm, and honestly the way she does it? iconic. here's the state tour:

💫 New snapshot

This state is entered when you're creating a new static snapshot. The data from any previous mailbox snapshot gets cleared 🧹 and a fresh capture of the mailbox head and tail is logged. This becomes the new static snapshot, and its whole job is detecting asynchronous messages sent by VFs.

On capturing the snapshot, depending on whether the number of pending messages in that snapshot exceed the watermark value, the state machine slides into either the traverse state or the detect state. like she literally chooses her path based on the watermark, periodt 💅

🧚 Traverse

If the pending message count is below the watermark, then she just iterates through the snapshot without doing any action on the VF. no drama, no flags, just vibes 🌈

🔥 Detect

If the pending message count exceeds the watermark, she traverses the static snapshot and goes looking for a malicious VF. full detective mode, magnifying glass out 🔍

👑 SEE ALSO 👑

Kernel file ./drivers/net/ethernet/intel/ice/ice_vf_mbx.c — go read her 📖

ngl bestie, this is kernel networking — read the source before you poke it, fr fr 🙈

💀 and that's the whole page!! mwah 💋 this one came from ./drivers/net/ethernet/intel/ice, dated October 2026, and yes the page name is ice_mbx_vf_state_handler(9) in case you forgot already 🎀✨🦋💜

📦 where this page comes from