fbnic_fw_disable_mbx(9)

💖 fbnic_fw_disable_mbx(9) 💖

okay so this is a page from the Kernel API Manual — yes, that Kernel API Manual — and it's all about fbnic_fw_disable_mbx, bestie. it's a tiny little function but it does a whole lot of tidying up. let's get into it 🫶

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✨ NAME ✨

fbnic_fw_disable_mbx — puts the mailbox into standby state temporarily (emphasis on temporarily, she's coming back)

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🎀 SYNOPSIS 🎀

void fbnic_fw_disable_mbx (struct fbnic_dev *fbd );

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🌸 ARGUMENTS 🌸

• fbd — a pointer to the device. that's it. that's the whole vibe check. she just needs to know which device we're talking about 💅

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🦋 DESCRIPTION 🦋

okay so picture this: the mailbox is out here living its best life, and we need it to chill for a sec. so what happens is —

1. we shut the mailbox down by notifying the firmware to stop sending us logs 📭
2. we mask and synchronize the IRQ (yes, mask then synchronize, in that order, don't come for her) 🔇
3. and then we clean up the rings ✨

and that's the whole glow-up. mailbox: standby mode. iconic behavior, no cap 👑

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🔥 SEE ALSO 🔥

• Kernel file ./drivers/net/ethernet/meta/fbnic/fbnic_irq.c — go read the source, iykyk 📂
• fbnic_fw_request_mbx(9)
• fbnic_fw_free_mbx(9)
• fbnic_mac_request_irq(9)
• fbnic_mac_free_irq(9)
• fbnic_msix_test(9)

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ngl the whole friend group is here — if you liked this one you're gonna be obsessed with the rest of the fbnic crew 💜

okay that's the page!! mwah 💋 this little writeup lives in ./drivers/net/ethernet/meta/fbnic, it's dated October 2026, and it's literally page fbnic_fw_disable_mbx(9) of the Kernel API Manual. go be great, bestie 🌈⭐🎀