STRUCT PTP_DATA(9)

💅 struct ptp_data(9) — the Kernel API Manual, but make it make sense

okay so bestie, welcome to the manual page for struct ptp_data(9), literally the kernel API manual entry, and no cap this is the whole thing, every field, every time unit, every default. let's go 🫶

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🌸 NAME 🌸

struct ptp_data — PTP hardware clock data

like, it's the lil struct that holds all the PTP hardware clock data. that's the vibe. 💖

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✨ SYNOPSIS ✨

struct ptp_data {
    struct ptp_clock *ptp_clock;
    struct ptp_clock_info ptp_clock_info;
    spinlock_t lock;
    s64 delta;
    u32 scale_update_gp2;
    u64 scale_update_adj_time_ns;
    u64 scaled_freq;
    u32 last_gp2;
    u32 wrap_counter;
    struct delayed_work dwork;
 };

not me putting the whole struct up there character for character 😭 that's the layout, that's the icon, that's the main character energy. 🌈

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🎀 Members 🎀

okay now the part everyone actually came for — the member-by-member breakdown. lowkey obsessed with how organized this is. 👑

• ptp_clock — a struct ptp_clock pointer, the exact one handed back to you by the ptp_clock_register function. it's giving "receipt from the registration desk". 🧾
• ptp_clock_info — a struct ptp_clock_info that describes a PTP hardware clock. the whole personality of the clock basically. 🕰️
• lock — a spinlock_t that protects the time adjustments data. yes bestie, the adjustments data needs a bodyguard. 💅
• delta — the delta between the hardware clock and the ptp clock, measured in nanoseconds. tiny little difference, huge implications, iykyk. 🔥
• scale_update_gp2 — the GP2 time when the scale was last updated. that's it, that's the fact. ✨
• scale_update_adj_time_ns — the adjusted time when the scale was last updated, in nanoseconds. again with the nanoseconds, we love a consistent unit. 🎀
• scaled_freq — the clock frequency offset, scaled to 65536000000. not 65536, not 6553600 — 65536000000. do not come for me, that's the number in the manual, periodt. 💀
• last_gp2 — the last GP2 reading from the hardware, and it's used for tracking GP2 wraparounds. our little wrap-watcher. 🦋
• wrap_counter — the number of wraparounds since scale_update_adj_time_ns. keeping count, always keeping count. 🧮
• dwork — a struct delayed_work worker that's scheduled every 1 hour to detect workarounds. hourly check-in, very responsible, very demure. ⏰

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/net/wireless/intel/iwlwifi/mld/ptp.h — go read it, bestie, that's where the lore lives. 📖

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and that's the whole page, fr fr. this lil masterpiece is sourced from ./drivers/net/wireless/intel/i... and dated October 2026, so like… mark your calendars and stan responsibly. mwah 💋✨🍓