STRUCT VIORTC_PTP_CLOCK(9)

💖 struct viortc_ptp_clock(9) — the Kernel API Manual glow-up 💖

okay so bestie, welcome to the struct viortc_ptp_clock(9) page from the Kernel API Manual ✨ this is the PTP clock abstraction, and honestly? it's giving "small struct, big responsibilities." let's get into it 🎀

---

🌸 NAME 🌸

struct viortc_ptp_clock — the PTP clock abstraction, aka the little bundle that keeps your Precision Time Protocol clock and your virtio_rtc device on speaking terms 🫶

---

✨ SYNOPSIS ✨

struct viortc_ptp_clock {
    struct ptp_clock *ptp_clock;
    struct viortc_dev *viortc;
    struct ptp_clock_info ptp_info;
    u16 vio_clk_id;
    bool have_cross;
 };

like, that's the whole vibe. five members. no cap. 💅

---

🦋 Members 🦋

• ptp_clock — the PTP clock handle 👑 and yeah, it's the one you hand over when you're unregistering. it's literally the "remember me so you can let me go" field 😭
• viortc — the virtio_rtc device data 🌈 your device's whole personality lives here.
• ptp_info — the PTP clock description 📝 the actual "who am I, what can I do" of the clock.
• vio_clk_id — the virtio_rtc clock id 🔥 a u16, nice and tidy, so you know exactly which clock you're talking about.
• have_cross — a bool that says whether the device supports crosststamp with an available HW counter ⭐ like, "do we have the hardware counter? yes or no, no in-between." main character energy fr fr.

---

🧚 SEE ALSO 🧚

lowkey the whole friend group is here, go say hi 💜

Kernel file ./drivers/virtio/virtio_rtc_ptp.c struct viortc_ptp_cross_ctx(9), viortc_ptp_get_time_fn(9), viortc_ptp_do_xtstamp(9), viortc_ptp_getcrosststamp(9), viortc_ptp_unregister(9), viortc_ptp_get_cross_cap(9), viortc_ptp_register(9)

bestie reminder: read the friends too, iykyk 🙈 the struct doesn't explain itself in a vacuum.

---

and that's the page!! 🍓 source/version vibes: ./drivers/virtio, dated October 2026, filed under struct viortc_ptp_clock(9) — slay, go register some clocks, periodt 💅💖