libnvme(2)

💖 libnvme(2) — the API Manual, bestie edition 💖

okay so you're deep in the libnvme API manual and you landed on struct nvme_phy_rx_eom_log, aka the Physical Interface Receiver Eye Opening Measurement Log 🌸. yes the name is a whole mouthful, we're gonna get through it together, hand in hand 🫶

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✨ NAME ✨

struct nvme_phy_rx_eom_log — the Physical Interface Receiver Eye Opening Measurement Log 👁️✨ like it's literally a struct that holds the log of how wide-open your receiver's eye is. slay.

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✨ SYNOPSIS ✨

here's the whole glow-up, verbatim, no cap:

struct nvme_phy_rx_eom_log {
    __u8 lid;
    __u8 eomip;
    __le16 hsize;
    __le32 rsize;
    __u8 eomdgn;
    __u8 lr;
    __u8 odp;
    __u8 lanes;
    __u8 epl;
    __u8 lspfc;
    __u8 li;
    __u8 rsvd15[3];
    __le16 lsic;
    __le32 dsize;
    __le16 nd;
    __le16 maxtb;
    __le16 maxlr;
    __le16 etgood;
    __le16 etbetter;
    __le16 etbest;
    __u8 rsvd36[28];
    struct nvme_eom_lane_desc descs[];
};

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✨ Members ✨

the way each of these fields has a job and they're all doing it 💅 let's meet the cast:

• lid — Log Identifier. it's giving "hi, which log am I" 🎀
• eomip — EOM In Progress. is the eye-opening measurement still cooking? 👀
• hsize — Header Size.
• rsize — Result Size.
• eomdgn — EOM Data Generation Number.
• lr — Log Revision. glow-up tracking, basically.
• odp — Optional Data Present. is the optional stuff in the room with us? 🙈
• lanes — Number of lanes configured for this port. lanes! plural! iconic 🌈
• epl — Eyes Per Lane. yes bestie, every lane gets its own little eyes 👁️👁️
• lspfc — Log Specific Parameter Field Copy.
• li — Link Information. the lore 🔥
• rsvd15 — Reserved. shhh, not for us 💀
• lsic — Log Specific Identifier Copy.
• dsize — Descriptor Size.
• nd — Number of Descriptors. how many descs we got, fr fr.
• maxtb — Maximum Top Bottom.
• maxlr — Maximum Left Right. up down left right, main character energy ⭐
• etgood — Estimated Time for Good Quality.
• etbetter — Estimated Time for Better Quality. better!! we love an upgrade 🦋
• etbest — Estimated Time for Best Quality. bestie this is THE one 👑
• rsvd36 — Reserved. another reserved moment, respect the boundary 💜
• descs — EOM Lane Descriptors. the flexible-array-成员 grand finale, struct nvme_eom_lane_desc descs[] 🧚

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lowkey reminder: everything above is exactly what the page says, I'm just hyping it up. don't come for me, come for the struct 😭

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and that's the whole page, bestie! this was struct nvme_phy_rx_eom_log from the API Manual, dated July 2026, living its best life in libnvme(2). periodt. 💖✨🎀