libnvme(2)

💖 libnvme — the manual, but make it a vibe 💖

okay bestie, so this is a page from the libnvme(2) manual — yeah, section 2, the API Manual one, we're in the C-API part of the library 💅. Sit down, hydrate, and let's talk about one very specific little enum, because that's the whole page. No cap.

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✨ NAME ✨

enum nvme_eom_optional_data_present — the EOM Optional Data Present Fields. that's it, that's the whole thing, and honestly? iconic. 👑

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🌸 SYNOPSIS 🌸

here's the enum, verbatim, character for character, don't touch it, it's perfect:

enum nvme_eom_optional_data_present {
    NVME_EOM_ODP_PEFP_SHIFT ,
    NVME_EOM_ODP_EDFP_SHIFT ,
    NVME_EOM_ODP_RSVD_SHIFT ,
    NVME_EOM_ODP_PEFP_MASK ,
    NVME_EOM_ODP_EDFP_MASK ,
    NVME_EOM_ODP_RSVD_MASK

};

look at her. six members. shifts on top, masks on the bottom. it's giving organized. 🎀

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🦋 Constants 🦋

each of these does literally one job and does it well, and we love that for them:

• NVME_EOM_ODP_PEFP_SHIFT — the shift amount you use to pull the printable eye field present out of the struct nvme_phy_rx_eom_log.odp field. slide it over, bestie ✨
• NVME_EOM_ODP_EDFP_SHIFT — the shift amount for getting the eye data field present out of that same struct nvme_phy_rx_eom_log.odp field.
• NVME_EOM_ODP_RSVD_SHIFT — shift amount to grab the reserved optional data present from struct nvme_phy_rx_eom_log.odp. yeah that field again. she's the main character fr fr 💅
• NVME_EOM_ODP_PEFP_MASK — the mask that gets you the printable eye field present from struct nvme_phy_rx_eom_log.odp. masking era 😌
• NVME_EOM_ODP_EDFP_MASK — mask for getting the eye data field present from struct nvme_phy_rx_eom_log.odp.
• NVME_EOM_ODP_RSVD_MASK — mask to get the reserved data present from struct nvme_phy_rx_eom_log.odp.

lowkey the whole page is about one .odp field inside struct nvme_phy_rx_eom_log and how to slice it up. shift then mask. that's the recipe. don't skip steps. 💀

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and that's the page, babes 🫶 that's literally all of it — no hidden options, no extra env vars, nothing lurking. shift, mask, done. go forth and parse your EOM optional data present fields with confidence, you absolute scholar 🧚💜

signing off — this was the libnvme(2) man page for enum nvme_eom_optional_data_present, dated July 2026. mwah. 💋