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Diffstat (limited to 'docs/userguide')
| -rwxr-xr-x | docs/userguide/testusage.rst | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/docs/userguide/testusage.rst b/docs/userguide/testusage.rst index 9ee87788..97c74721 100755 --- a/docs/userguide/testusage.rst +++ b/docs/userguide/testusage.rst @@ -438,6 +438,38 @@ multiple VM NIC pairs. **NOTE:** In case of linux_bridge, all guest NICs are connected to the same bridge inside the guest. +Selection of dpdk binding driver for tests with VMs +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +To select dpdk binding driver, which will specify which driver the vm NICs will +use for dpdk bind, the following configuration parameter should be configured: + +.. code-block:: console + + GUEST_DPDK_BIND_DRIVER = ['igb_uio_from_src'] + +The supported dpdk guest bind drivers are: + +.. code-block:: console + + 'uio_pci_generic' - Use uio_pci_generic driver + 'igb_uio_from_src' - Build and use the igb_uio driver from the dpdk src + files + 'vfio_no_iommu' - Use vfio with no iommu option. This requires custom + guest images that support this option. The default + vloop image does not support this driver. + +Note: uio_pci_generic does not support sr-iov testcases with guests attached. +This is because uio_pci_generic only supports legacy interrupts. In case +uio_pci_generic is selected with the vnf as QemuPciPassthrough it will be +modified to use igb_uio_from_src instead. + +Note: vfio_no_iommu requires kernels equal to or greater than 4.5 and dpdk +16.04 or greater. Using this option will also taint the kernel. + +Please refer to the dpdk documents at http://dpdk.org/doc/guides for more +information on these drivers. + Multi-Queue Configuration ^^^^^^^^^^^^^^^^^^^^^^^^^ |