lpfc_sli_enable_msi(9)

📦 version 7.3.1, in nixpkgs unstable

💅 lpfc_sli_enable_msi — a Kernel API Manual moment

okay bestie, welcome to the Kernel API Manual, where we talk about lpfc_sli_enable_msi and honestly? it's giving "small function, big job" energy. 🔥

✨ NAME ✨

lpfc_sli_enable_msi — Enable MSI interrupt mode on SLI-3 device. periodt. 🎀

🌸 SYNOPSIS 🌸

int lpfc_sli_enable_msi (struct lpfc_hba *phba );

like, that's the whole signature. iconic behavior honestly 💅

🦋 ARGUMENTS 🦋

  • phba — pointer to lpfc hba data structure. yes it's a pointer, yes you need it, no you can't skip it 🫶

💖 DESCRIPTION 💖

so here's the tea ☕ — this routine is invoked to enable the MSI interrupt mode to device with SLI-3 interface spec. that's the whole vibe check.

and the way it does that? the kernel function pci_enable_msi is called to enable the MSI vector. that's the main character move right there ✨

also, lowkey important: the device driver is responsible for calling the request_irq to register MSI vector with a interrupt the handler — and yes, that's done in this function. not somewhere else, not by some other girlie, right here. 🧚

return codes: 0 - successful, other values - error. so like... check your return value, bestie. 0 is a slay, anything else is a "not me crying in the club" moment 😭

👑 SEE ALSO 👑

Kernel file ./drivers/scsi/lpfc/lpfc_init.c — and now, the friend group. this list is literally the whole extended cast, no cap. every single one, in order, because we don't do leaving people out here 🫶

like, that's the whole roster and every single one of them ate 💅 go read them, iykyk 🦋

and that's the page, bestie! this one lives over in ./drivers/scsi/lpfc, dated October 2026, and it's filed under lpfc_sli_enable_msi(9) ✨ mwah, bye! 💖🎀🌸🫶

📦 where this page comes from