libnvme(2)

💖 NAME 💖

okok so bestie, this one is all about enum nvme_id_ctrl_cqes — aka the thing that defines the required and maximum Completion Queue entry size when you're rolling with the NVM Command Set. that's it, that's the whole vibe. it lives in the libnvme manual (section 2, API girlies rise 🫶), and it's giving very "small enum, big responsibility" energy ngl.

---

✨ SYNOPSIS ✨

the way this thing is literally just two constants sitting in a struct-y little enum?? iconic. here's the exact shape of it, no notes:

enum nvme_id_ctrl_cqes {
    NVME_CTRL_CQES_MIN ,
    NVME_CTRL_CQES_MAX

};

notice the little space before that comma in NVME_CTRL_CQES_MIN ,? yeah that's just how it's written fr fr, we don't touch it, we don't fix it, we respect it 💅

🎀 Constants 🎀

two constants. both of them masks. both of them obsessed with the NVM Command Set. let's go:

• NVME_CTRL_CQES_MIN — okay so this is the mask to get the value of the required Completion Queue Entry size when using the NVM Command Set. the required one. the bare minimum. the "you must at least have this" queen 👑
• NVME_CTRL_CQES_MAX — and this one is the mask to get the value of the maximum Completion Queue entry size when using the NVM Command Set… wait, I already used mint, let's go this — the maximum one. as big as it gets for the NVM Command Set. the upper bound bestie, the ceiling, the limit 🦋

lowkey important note: both of these are masks, so you're masking a value out, not just reading a plain number. that's the whole point, that's the assignment, periodt.

---

💜 and that's the page!! no cap, that's genuinely everything — two constants and a whole lot of completion queue entry sizing lore.

kisses, this was the enum nvme_id_ctrl_cqes page from libnvme(2), dated July 2026 — go mask responsibly bestie, ily, bye!! 🌸💖✨