ixgbe_check_for_msg(9)

📦 version 7.3.1, in nixpkgs unstable

💌 ixgbe_check_for_msg(9) — from the Kernel API Manual, bestie ✨

okay so picture this: you're deep in the Linux kernel, specifically the Intel ixgbe driver situation, and you need to know whether somebody slid a message into your mailbox. that's it. that's the whole function. it's giving "did anyone leave me a note in my locker" energy and honestly? iconic. 💅

this page lives in section 9 of the Kernel API Manual, and it's all about ixgbe_check_for_msg — say it with me, it's fun once you get the rhythm 🎀

✨ SYNOPSIS ✨

int ixgbe_check_for_msg (struct ixgbe_hw *hw , u16 mbx_id );

that's the whole vibe check right there — hand it a hardware pointer and a mailbox id, and it comes back with an int. simple. clean. slay. 🌸

🫶 ARGUMENTS 🫶

  • hw — pointer to the HW structure 💖 this is your little window into the hardware, so the function knows which device it's even talking to.
  • mbx_id — id of mailbox to check 👀 because apparently one mailbox wasn't enough, and you gotta be specific about which one you're peeking into.

🔥 DESCRIPTION 🔥

so what does it actually DO. it checks to see if someone sent us mail 📬 no cap, that's the literal description and honestly it's so real of it.

if the Status bit was found, it returns SUCCESS — congratulations, you have mail, go read it bestie 🎉. otherwise it returns ERR_MBX, which is the "inbox empty, nobody loves you, no message for you today" response 💀 (affectionately).

no extra steps, no hidden behaviour, just a status check and a value. lowkey one of the easier ones in the family.

🦋 SEE ALSO 🦋

first up, the actual kernel file where this lives — because yes, you can just go read the source, we love a transparent queen 👑

  • Kernel file ./drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.c

and now the whole friend group, all of these are (9) man pages so you know they're part of the family 🧚

like, read one, read them all, they're all connected. iykyk 🌈

bestie heads-up: this one just checks. if you were hoping to actually go get the message, that's a different friend (ixgbe_read_mbx(9)), and if you wanna wait around dramatically for mail, that's ixgbe_poll_for_msg(9). match the function to the mood. ⭐

🌷 and that's the whole page, ty for coming to my ted talk 🌷

source/version: ./drivers/net/ethernet/intel/i... — dated October 2026, filed under ixgbe_check_for_msg(9). mwah, go check that mailbox, ily, bye 💜🦋

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