mucse_write_...wait_ack_mbx(9)

📦 version 7.3.1, in nixpkgs unstable

💌 mucse_write_and_wait_ack_mbx — like, the Kernel API Manual page, bestie 💌

Okay so picture this: you're in the Kernel API Manual (yes, that's the manual name, we're being official today 🎀) and you land on mucse_write_and_wait_ack_mbx(9). Bestie. The name literally spoils the whole plot: it writes a message into the mailbox and then waits for the ack. Obsessed with a function that actually tells you what it does 💅

✨ NAME ✨

mucse_write_and_wait_ack_mbx — write a message to the mailbox, then wait for the ack. That's it, that's the whole vibe 🦋

🌸 SYNOPSIS 🌸

int mucse_write_and_wait_ack_mbx (struct mucse_hw *hw , const __le32
*msg , u16 size );

🎀 ARGUMENTS 🎀

  • hw — pointer to the HW structure 💖 like, the hardware bestie you're talking to
  • msg — the message buffer, aka the actual lil letter you're dropping in the mailbox ✉️
  • size — length of buffer, so nobody oversteps 🙈

⭐ RETURN ⭐

It returns 0 if it successfully copied message into the buffer and received an ack to that message within the delay * timeout_cnt period. Two wins, one return value, we love a clean 0 👑✨

Fr fr, no cap: 0 means both things happened — copied and acked — inside that delay * timeout_cnt window. Anything else and, well, the wait was giving… not it 💀

🦋 SEE ALSO 🦋

Kernel file ./drivers/net/ethernet/mucse/rnpgbe/rnpgbe_mbx.c — the source, go snoop 🧚

The whole mailbox friend group, all here, all iconic:

And that's the page, bestie 🫶 Signing off from ./drivers/net/ethernet/mucse/r..., dated October 2026 — same manual name, same mucse_write_...wait_ack_mbx(9) energy, periodt 💜🌈

📦 where this page comes from