stmmac_init_tstamp_counter(9)

📦 version 7.3.1, in nixpkgs unstable

💅 stmmac_init_tstamp_counter(9) — like, the kernel API manual page, but make it make sense 🎀

okay bestie, welcome to the Kernel API Manual entry for stmmac_init_tstamp_counter(9) ✨ this is the one that boots up the hardware timestamping counter, and honestly? she's iconic. let's get into it 🫶

🌸 NAME 🌸

stmmac_init_tstamp_counter — init hardware timestamping counter 💖 literally what it says on the tin, no cap

✨ SYNOPSIS ✨

int stmmac_init_tstamp_counter (struct stmmac_priv *priv , u32
systime_flags );

that's the whole vibe check: takes a struct stmmac_priv * and a u32, hands you back an int 🌈

🦋 ARGUMENTS 🦋

  • priv — the driver's private structure 💅 that's your whole personality/state object, she knows everything about this driver instance
  • systime_flags — the timestamping flags 🎀 these tell the counter how to behave

👑 DESCRIPTION 👑

So the whole point: this bad boy initializes the hardware counter for packet timestamping ⭐ that's it, that's the job.

It's valid as long as the interface is open and not suspended — like, don't expect her to be doing her thing while she's asleep, okay? 😴

And here's the tea 🔥 — it will be rerun after resuming from suspend. In that case, the timestamping flags that were updated by stmmac_hwtstamp_set also need to be restored 👀 so like, don't forget to bring those back, bestie, or the whole thing is giving amnesia 💀

🧚 SEE ALSO 🧚

okay this is the part where the manpage goes absolutely feral with cross-references, and we are NOT skipping a single one, periodt 💅

the source file herself:

  • Kernel file ./drivers/net/ethernet/stmicro/stmmac/stmmac_main.c 📁

the whole friend group (yes, all of them):

like I said. the whole friend group. iykyk 😭💀

💖 reminder bestie: this counter only counts while the interface is open and not suspended, and after a suspend/resume you gotta restore those flags from stmmac_hwtstamp_set. don't leave her hanging 🫶

and that's the whole page!! source is ./drivers/net/ethernet/stmicro..., dated October 2026, and she's filed under stmmac_init_tstamp_counter(9) in the Kernel API Manual 🌸✨ mwah, go timestamp some packets, ily 💜

📦 where this page comes from