megasas_make_sgl_fusion(9)

📦 version 7.3.1, in nixpkgs unstable

💅 megasas_make_sgl_fusion — from the Kernel API Manual, bestie ✨

Okay so picture this: we're deep in the kernel, right? And this little icon, megasas_make_sgl_fusion, has one whole job — prepping a 32-bit SGL. That's it. That's the gig. SGL stands for scatter-gather list, and if you don't know what that is, don't worry, we're gonna get you there 🫶. This page lives in the Kernel API Manual, so it's giving very much "internal kernel function, handle with care" energy.

🌸 NAME 🌸

megasas_make_sgl_fusion — Prepares 32-bit SGL. Lowkey her whole personality. Periodt.

✨ SYNOPSIS ✨

void megasas_make_sgl_fusion (struct megasas_instance *instance , struct
scsi_cmnd *scp , struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr , struct
megasas_cmd_fusion *cmd , int sge_count );

It returns void, meaning it gives you nothing back — no return value, no little treat, no "good job" 😭. She does the work and dips. Iconic behavior honestly.

🎀 ARGUMENTS 🎀

Five arguments, five vibes, let's go bestie:

  • instance — the adapter soft state 💖. Think of it as the main character of this whole operation; everything you need to know about the adapter lives in here.
  • scp — the SCSI command from the mid-layer 🦋. It's the actual command the mid-layer handed down to us, and we're just here to help it along.
  • sgl_ptr — the SGL to be filled in ✨. Notice the phrasing: to be filled in. This bad boy shows up empty and it's our job to fill it. No pressure or anything 💅.
  • cmd — the cmd we are working on 🔥. Yep, that's the one. Right there. The command of the hour.
  • sge_count — the sge count 🌸. Exactly what it says on the label — the count of the sges. We love a self-describing parameter.
Ngl, this is a fill-in-the-blanks type function, not a return-a-value type function. sgl_ptr comes back different than it arrived. That's the whole plot 🧚.

💜 SEE ALSO 💜

So you wanna go down the rabbit hole? Say less. Here's the whole friend group 👑:

First up, the kernel file where this lives:

./drivers/scsi/megaraid/megaraid_sas_fusion.c

And the rest of the crew, all section (9):

Like, that's a lot of siblings 😭 but they're all family, and honestly? Every single one of them is worth a read. Iykyk.

Okay that's the whole page, bestie 🍓 — and before you close the tab: this one came out of ./drivers/scsi/megaraid and it's dated October 2026, so jot that down in your notes app because it's lowkey important. Slay, go fill in some SGLs, and remember: no cap, the details matter 💅✨👑

📦 where this page comes from