libnvme_mi_...mi_data_port(9)

💅 libnvme_mi_...mi_data_port(9)

okay so this is from the libnvme API manual — the page is literally called libnvme_mi_...mi_data_port(9) (yes the name is a whole vibe, we love an abbreviated queen) and it's all about pulling port data out of your NVMe-MI endpoint. bestie, let's get into it 🫶

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✨ NAME ✨

libnvme_mi_mi_read_mi_data_port — Perform a Read MI Data Structure command, retrieving port data.

like, that's the whole gig. you run this, you get port data. iconic behavior honestly 💅

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🌸 SYNOPSIS 🌸

int libnvme_mi_mi_read_mi_data_port (struct libnvme_mi_ep *ep , __u8
portid , struct nvme_mi_read_port_info *p );

three args, one function, zero drama. copy it exactly, don't freestyle it 😭

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🎀 ARGUMENTS 🎀

• ep — the endpoint for MI communication. this is your whole connection to the MI world, so like… don't lose it 💀
• portid — id of port data to retrieve. which port are we snooping on? that's the one 🔍
• p — port information to populate. you hand it over empty-ish and it comes back filled in. main character energy tbh ✨

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🦋 DESCRIPTION 🦋

Retrieves the Port information, for the specified port ID. 🔥

The subsystem data (from libnvme_mi_mi_read_mi_data_subsys) nmp field contains the allowed range of port IDs — so yes, bestie, nmp is your cheat sheet for which portid values are even legal. check it before you go picking random numbers, iykyk 🙈

See struct nvme_mi_read_port_info. that's what lands in p. go look at it, it's giving "the actual payload" 🌈

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⭐ RETURN ⭐

The nvme command status if a response was received (see enum nvme_status_field) or negative error code otherwise.

so: either a status from the nvme command (peep enum nvme_status_field for what those mean) or a negative error code if things went sideways. no cap, always check it 💀✨

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lowkey reminder: if you get a negative error code back, that's not a response — that's a situation. handle it accordingly 🫶

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and that's the page!! source is the libnvme API manual, dated October 2026 — mwah, slay, go read your port data responsibly 🎀💖🌟