i40e_ptp_write(9)

📦 version 7.3.1, in nixpkgs unstable

💅 i40e_ptp_write(9)

okay so bestie, welcome to the Kernel API Manual, section 9 — this is the page for i40e_ptp_write, and honestly? it's a little icon. let's get into it ✨

🌸 NAME

i40e_ptp_write — write the PHC time to the device 🕰️💖

✨ SYNOPSIS

void i40e_ptp_write (struct i40e_pf *pf , const struct timespec64 *ts );

like, that's the whole vibe. returns nothing, takes two things, slays quietly. no cap. 🫶

🎀 ARGUMENTS

  • pf — the board private structure 🌈 (yes that's its whole personality, it's the board's private business, we don't pry)
  • ts — the timespec structure that holds the new time value ⏰ literally the moment in time we're about to push down to the hardware

🔥 DESCRIPTION

so here's the tea ☕: this function writes the PRTTSYN_TIME registers with the user value. that's it, that's the job, and it does it gorgeously 💅

but there's a lil twist — the way that we receive a timespec from the stack means we must convert that timespec into nanoseconds before programming the registers. so: convert first, program second. no shortcuts, no vibes-based math. 🧚✨

fr fr, the conversion isn't optional — the registers want nanoseconds, the stack hands you a timespec. do the math or the clock is gonna be off and that's not the look. 😭

🌟 SEE ALSO

the whole extended friend group 🫶 — every one of these is linked from the kernel file itself:

that's the whole page bestie, go forth and write some registers 💜

signing off from ./drivers/net/ethernet/intel/i40e, dated October 2026 — mwah, ily, see u in the next (9) page 🦋💖

📦 where this page comes from