---
name: "pci_msix_vec_count"
section: "9"
platform: "linux"
package: "linux-manual-4.9"
version: "4.9.228-1"
release: "Debian 9 (Stretch)"
platforms: ["linux"]
url: "https://new.carta.tech/pci_msix_vec_count"
---

# pci\_msix\_vec\_count(9)

return the number of device's MSI-X table entries

## NAME

pci\_msix\_vec\_count - return the number of device's MSI-X table entries

## SYNOPSIS

**int pci\_msix\_vec\_count(struct pci\_dev \*** *dev***);**

## ARGUMENTS

*dev*

pointer to the pci\_dev data structure of MSI-X device function This function returns the number of device's MSI-X table entries and therefore the number of MSI-X vectors device is capable of sending. It returns a negative errno if the device is not capable of sending MSI-X interrupts.

## COPYRIGHT