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PCI_ENABLE_MSIX_RANG(9) Hardware Interfaces PCI_ENABLE_MSIX_RANG(9)

NAME

pci_enable_msix_range - configure device's MSI-X capability structure

SYNOPSIS

int pci_enable_msix_range(struct pci_dev * dev, struct msix_entry * entries, int minvec, int maxvec);

ARGUMENTS

dev
pointer to the pci_dev data structure of MSI-X device function

entries

pointer to an array of MSI-X entries

minvec

minimum number of MSI-X irqs requested

maxvec

maximum number of MSI-X irqs requested

DESCRIPTION

Setup the MSI-X capability structure of device function with a maximum possible number of interrupts in the range between minvec and maxvec upon its software driver call to request for MSI-X mode enabled on its hardware device function. It returns a negative errno if an error occurs. If it succeeds, it returns the actual number of interrupts allocated and indicates the successful configuration of MSI-X capability structure with new allocated MSI-X interrupts.

COPYRIGHT

April 2019 Kernel Hackers Manual 4.9.