PCI_IOV_UNINIT(9)

✨ PCI_IOV_UNINIT(9) ✨

Kernel Developer's Manual · the SR-IOV shutdown queen 💅

🌸 NAME 🌸

PCI_IOV_UNINIT — disable SR-IOV on a PF device

🎀 SYNOPSIS 🎀

#include <sys/bus.h>
#include <dev/pci/pci_iov.h>

void
PCI_IOV_UNINIT(device_t dev);

🦋 DESCRIPTION 🦋

okay bestie so PCI_IOV_UNINIT() is a method, right? And it gets called by the PCI Single-Root I/O Virtualization (SR-IOV) infrastructure whenever the user is like "okay actually turn SR-IOV off on this Physical Function (PF)". Basically the user said no more, and the infra comes knocking on your driver's door. 🚪✨

When this method gets called, the PF driver must:

• release any SR-IOV-related resources that it has allocated 🗑️
• disable any device-specific SR-IOV configuration in the device ⛔

that's it, that's the job. no cap.

💀 real talk though: this method will only be called following a successful call to PCI_IOV_INIT(9). So if init didn't slay, don't expect this one to show up.

and one more thing — it is not guaranteed that PCI_IOV_ADD_VF(9) will have been called for any Virtual Function (VF) after the call to PCI_IOV_INIT(9) and before the call to PCI_IOV_UNINIT. so like… zero VFs, one VF, who knows. you gotta be ready either way. 🫶

🌈 SEE ALSO 🌈

• pci(9)
• PCI_IOV_ADD_VF(9)
• PCI_IOV_INIT(9)

👑 AUTHORS 👑

This manual page was written by Ryan Stone <rstone@FreeBSD.org>. iconic of him honestly. 💖

okay that's the whole page bestie, go forth and uninit responsibly ✨

this lil page came from the Debian edition, dated May 28, 2015 — mwah, mwah, bye 💅🎀