t4_identify_port(9)

📦 version 7.3.1, in nixpkgs unstable

🌸 t4_identify_port(9) 🌸

ok so we're in the Kernel API Manual bestie, and today's main character is t4_identify_port(9) — like, this is the page for it, and it's honestly giving "tiny function, huge friend group" energy 💅

✨ NAME ✨

t4_identify_port — identify a VI's port by blinking its LED 🎀

(yes, that's the whole bit. it blinks a light. and it slays.)

🦋 SYNOPSIS 🦋

int t4_identify_port (struct adapter *adap , unsigned int mbox ,
unsigned int viid , unsigned int nblinks );

no cap, that's the whole signature — four args, one int coming back at you 🫶

💖 ARGUMENTS 💖

okay bestie, let's do a vibe check on every single parameter, one by one:

  • adap — the adapter 👑 the actual hardware-ish thing we're talking to. main character energy.
  • mbox — mailbox to use for the FW command 📬 like, which mailbox slot we're sliding the firmware request into.
  • viid — the VI id 🌈 the specific VI whose port we're about to make all shiny and obvious.
  • nblinks — how many times to blink LED at 2.5 Hz ⭐ that's the blink count, and the rate is literally 2.5 Hz, no cap.

🌟 DESCRIPTION 🌟

Identifies a VI's port by blinking its LED ✨

that's it. that's the function. you give it the adapter, a mailbox, a VI id, and a blink count, and it makes the LED go blink-blink so you can physically point at a port and go "that one 🫵". it's giving "find my port" but with light. iconic. obsessed.

lowkey the most useful thing in a datacenter full of identical cables is a blinking light, and this function knows that 💀

🔥 SEE ALSO 🔥

okay this is the part where I need you to sit down, because the friend group is massive — like, this function knows literally everybody. first up, the source file it lives in:

  • Kernel file ./drivers/net/ethernet/chelsio/cxgb4/t4_hw.c 🎀

and now the whole squad, in order, no skipping, I promised:

see? everybody. literally the whole extended universe, iykyk 😭💜

and that's the page, bestie! 🧚 this little cutie came to you from the source ./drivers/net/ethernet/chelsio... and it's dated October 2026, filed under t4_identify_port(9) — go blink something pretty, mwah 💋🎀✨

📦 where this page comes from