t4_get_scfg_version(9)

📦 version 7.3.1, in nixpkgs unstable

🌸 t4_get_scfg_version — Kernel API Manual, bestie edition 🌸

Okay so this is t4_get_scfg_version(9) from the Kernel API Manual, and it's genuinely one of the shorter ones, so grab a lil snack and let's go 🍓

✨ NAME ✨

t4_get_scfg_version — returns the Serial Configuration version, that's the whole vibe 💅

🦋 SYNOPSIS 🦋

int t4_get_scfg_version (struct adapter *adapter , u32 *vers );

🎀 ARGUMENTS 🎀

  • adapter — the adapter, aka your lil hardware bestie in question 🫶
  • vers — where to place the version. it's a pointer, so like, that's where the answer goes ✨

💖 DESCRIPTION 💖

So what it does: it reads the Serial Configuration Version via the Firmware interface. And because it's going through firmware, you literally cannot call this until you're ready to issue Firmware commands — that's the gate, no cap 🚪

The format of the Serial Configuration version is adapter specific, so don't come in expecting one universal shape, because there isn't one 🙈 It returns 0 on success, and an error on failure. classic.

heads up bestie: early versions of the Firmware didn't include the ability to retrieve the Serial Configuration version at all. so in that case it zeroes out the return-value parameter, specifically so it doesn't just leave garbage sitting in there. thoughtful icon behaviour honestly 💀

Also also — and this one's important — the Firmware will return its cached copy of the Serial Initialization Revision ID, not the actual Revision ID as written in the Serial EEPROM 😭 This only bites you if a new VPD has been written and the Firmware/Chip haven't yet gone through a RESET sequence. So the move is: defer calling this routine until after a FW_RESET_CMD has been issued, if the Host Driver is going to be performing a full adapter initialization. literally just wait, it's giving patience 🧘‍♀️

🌈 SEE ALSO 🌈

Kernel file ./drivers/net/ethernet/chelsio/cxgb4/t4_hw.c — go read the source, it's iconic 👑

The full squad roll-call, no one left out 🫡

and that's the whole page, bestie, you ate that 🫶 this little beauty comes from the source path ./drivers/net/ethernet/chelsio... and it's dated October 2026, so like, future vibes only ✨ mwah, go read some more manpages 💜

📦 where this page comes from