libnvme(2)

💖 NAME 💖

okay bestie, gather round, because this one is struct nvme_lm_controller_state_data_header — the Controller State data header structure, and it literally describes the contents of the Controller State data. that's it, that's the whole job, no cap. 💅

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✨ SYNOPSIS ✨

the whole vibe, in code, do not touch a single character of it:

struct nvme_lm_controller_state_data_header {
    __le16 ver;
    __u8 csattr;
    __u8 rsvd3[13];
    __u8 nvmecss[16];
    __u8 vss[16];
 };

look at her. immaculate field layout. the padding is giving main character energy. 🎀

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🫶 Members 🫶

so like, let's go member by member, because each one is doing its own little thing:

• ver — the Version of this data structure. yes bestie, the version number is right there at the top, iconic behavior. ⭐
• csattr — Controller state attributes. the lil' attribute byte, the moment. 🦋
• rsvd3 — Reserved. not for you, not for me, not for anyone. hands off, bestie, it's Reserved. 🙈
• nvmecss — NVMe Controller state size in dwords. this is the size in dwords, so please measure accordingly, don't get it twisted. 🔥
• vss — Vendor specific size in dowrds. yeah — dowrds — that's literally what the manpage says, i'm just the messenger, i do not make the rules and i am NOT changing a single letter. vendor specific, size in dowrds, periodt. 💀

lowkey a reminder: rsvd3 is Reserved, so don't go writing your hopes and dreams into it. it's not that kind of field. 💜

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and that's the page, bestie. written for the libnvme API Manual (that's the manual name, love her), filed under libnvme(2), and it went out into the world in July 2026. go forth and lay out your struct nvme_lm_controller_state_data_header with confidence. mwah. 💖✨🌸