1PCI_ENABLE_MSIX(9)            Hardware Interfaces           PCI_ENABLE_MSIX(9)
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NAME

6       pci_enable_msix - configure device's MSI-X capability structure
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SYNOPSIS

9       int pci_enable_msix(struct pci_dev * dev, struct msix_entry * entries,
10                           int nvec);
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ARGUMENTS

13       dev
14           pointer to the pci_dev data structure of MSI-X device function
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16       entries
17           pointer to an array of MSI-X entries (optional)
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19       nvec
20           number of MSI-X irqs requested for allocation by device driver
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DESCRIPTION

23       Setup the MSI-X capability structure of device function with the number
24       of requested irqs upon its software driver call to request for MSI-X
25       mode enabled on its hardware device function. A return of zero
26       indicates the successful configuration of MSI-X capability structure
27       with new allocated MSI-X irqs. A return of < 0 indicates a failure. Or
28       a return of > 0 indicates that driver request is exceeding the number
29       of irqs or MSI-X vectors available. Driver should use the returned
30       value to re-send its request.
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33Kernel Hackers Manual 3.10         June 2019                PCI_ENABLE_MSIX(9)
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