fm10k_sm_mbx_init(9)

📦 version 7.3.1, in nixpkgs unstable

💖 NAME 💖

fm10k_sm_mbx_init — bestie, this is the one that initializes mailbox memory for the PF/SM mailbox ✨ (and yes, we're in the Kernel API Manual, pull up a chair 🎀)

✨ SYNOPSIS ✨

s32 fm10k_sm_mbx_init (struct fm10k_hw *hw , struct fm10k_mbx_info *mbx
, const struct fm10k_msg_data *msg_data );

🎀 ARGUMENTS 🎀

  • hw — pointer to hardware structure 👑
  • mbx — pointer to mailbox 💌
  • msg_data — handlers for mailbox events 🫶

🦋 DESCRIPTION 🦋

Okay so picture this: fm10k_sm_mbx_init initializes the PF/SM mailbox for use. That's the whole vibe. 🦋

The way it works is it takes the buffer you hand it and splits it — then uses that split to populate both the Tx and Rx FIFO by evenly splitting it between them. Fair and square, no cap. 💅

And here's the detail you can't skip, bestie: to allow for easy masking of head/tail, the value reported in size must be a power of 2, and it's reported in DWORDs, not bytes. Read that again. DWORDs. Not bytes. 😭

Any invalid values will cause the mailbox to return error. So, like, don't do that. 🫠

🌸 SEE ALSO 🌸

Kernel file ./drivers/net/ethernet/intel/fm10k/fm10k_mbx.c 🧚

That's the whole page, bestie — and for the cute sign-off: this one lives at ./drivers/net/ethernet/intel/f... (the source/version line, truncated exactly like that, no cap 🙈) and it's dated October 2026. Go slay your mailbox init 💜🌈⭐

📦 where this page comes from