ice_txclk_update_and_notify(9)

💅 ice_txclk_update_and_notify — like, the kernel API manual, bestie ✨

okay so this is a page from the Kernel API Manual (section 9, the kernel-functions girlies 🎀), and it's all about ice_txclk_update_and_notify. no cap, it's a whole vibe check for your TX reference clock.

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✨ NAME ✨

ice_txclk_update_and_notify — literally just validating TX reference clock switching 🕰️💖

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🌸 SYNOPSIS 🌸

void ice_txclk_update_and_notify (struct ice_pf *pf );

like, that's the whole thing. returns nothing (void), takes one pointer, done. slay.

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🦋 ARGUMENTS 🦋

• pf — pointer to the PF structure 🫶 that's it, that's the argument. she's a pointer to the PF struct and she's carrying the whole function on her back.

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🔥 DESCRIPTION 🔥

so after a link-up event happens, this function's whole job is to double-check whether the TX reference clock transition you previously requested actually went through. it's giving "did my text send or did I get left on read" energy 😭

here's the tea: the SERDES reference selector reflects the effective hardware choice — and that choice can legitimately differ from the clock you asked for, because Auto-Negotiation or the firmware can come in and apply extra policy of their own. main character behaviour, honestly. 👑

so what does she do about it?

if the hardware-selected clock differs from the one that was requested, she updates the software state to match and then stops further processing. periodt. no extra steps, we move on. 💅

but if the switch was successful? then she updates the per-PHY usage bitmaps, so the driver knows exactly which reference clock this port is currently using. keeping receipts, always. 📝✨

⚠️ real talk: this function does not initiate a clock switch. she does not start anything. she only validates the result of a transition that was already triggered, and does the cleanup of unused clocks. she's the follow-up girlie, not the initiator. 💀

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/net/ethernet/intel/ice/ice_txclk.c
• ice_txclk_get_pin(9)
• ice_txclk_enable_peer(9)
• ice_txclk_set_clk(9)

go read those too, iykyk 🧚💜

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k bye bestie!! this page is from the ./drivers/net/ethernet/intel/ice source and it's dated October 2026 ⭐ — and yes, it's still ice_txclk_update_and_notify(9) all the way down. mwah 💋🌸