[PATCH v2 0/3] Allow dyn MSI-X vector allocation of MANA

[Shradha Gupta <shradhagupta@linux.microsoft.com>]

In this patchset we want to enable the MANA driver to be able to
allocate MSI-X vectors in PCI dynamically

The first patch exports pci_msix_prepare_desc() in PCI to be able to
correctly prepare descriptors for dynamically added MSI-X vectors

The second patch adds the support of dynamic vector allocation in
pci-hyperv PCI controller by enabling the MSI_FLAG_PCI_MSIX_ALLOC_DYN
flag and using the pci_msix_prepare_desc() exported in first patch.

The third patch has the changes in MANA driver to be able to allocate
MSI-X vectors dynamically if it is supported by the infra. If the
support does not exist it defaults to older behavior.

---
 Changes in v2
 * split the first patch into two(exporting the preapre_desc
   func and using the function and flag in pci-hyperv)
 * replace 'pci vectors' by 'MSI-X vectors'
 * Change the cover letter description to align with changes made
---

Shradha Gupta (3):
  PCI: Export pci_msix_prepare_desc() for dynamic MSI-X alloc
  PCI: hv: Allow dynamic MSI-X vector allocation
  net: mana: Allocate MSI-X vectors dynamically as required

 .../net/ethernet/microsoft/mana/gdma_main.c   | 323 ++++++++++++++----
 drivers/pci/controller/pci-hyperv.c           |   7 +-
 drivers/pci/msi/irqdomain.c                   |   5 +-
 include/linux/msi.h                           |   2 +
 include/net/mana/gdma.h                       |  11 +-
 5 files changed, 279 insertions(+), 69 deletions(-)

-- 
2.34.1