forked from Minki/linux
5262912ef3
Add support to handle control virtqueue configurations per virtio specification. The control virtqueue is implemented in software and no hardware offloading is involved. Control VQ configuration need task context, therefore all configurations are handled in a workqueue created for the purpose. Modifications are made to the memory registration code to allow for saving a copy of itolb to be used by the control VQ to access the vring. The max number of data virtqueus supported by the driver has been updated to 2 since multiqueue is not supported at this stage and we need to ensure consistency of VQ indices mapping to either data or control VQ. Signed-off-by: Eli Cohen <elic@nvidia.com> Link: https://lore.kernel.org/r/20210823052123.14909-6-elic@nvidia.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
72 lines
1.9 KiB
Plaintext
72 lines
1.9 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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menuconfig VDPA
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tristate "vDPA drivers"
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depends on NET
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help
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Enable this module to support vDPA device that uses a
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datapath which complies with virtio specifications with
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vendor specific control path.
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if VDPA
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config VDPA_SIM
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tristate "vDPA device simulator core"
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depends on RUNTIME_TESTING_MENU && HAS_DMA
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select DMA_OPS
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select VHOST_RING
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select IOMMU_IOVA
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help
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Enable this module to support vDPA device simulators. These devices
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are used for testing, prototyping and development of vDPA.
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config VDPA_SIM_NET
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tristate "vDPA simulator for networking device"
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depends on VDPA_SIM
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select GENERIC_NET_UTILS
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help
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vDPA networking device simulator which loops TX traffic back to RX.
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config VDPA_SIM_BLOCK
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tristate "vDPA simulator for block device"
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depends on VDPA_SIM
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help
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vDPA block device simulator which terminates IO request in a
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memory buffer.
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config IFCVF
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tristate "Intel IFC VF vDPA driver"
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depends on PCI_MSI
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help
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This kernel module can drive Intel IFC VF NIC to offload
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virtio dataplane traffic to hardware.
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To compile this driver as a module, choose M here: the module will
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be called ifcvf.
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config MLX5_VDPA
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bool
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select VHOST_IOTLB
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help
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Support library for Mellanox VDPA drivers. Provides code that is
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common for all types of VDPA drivers. The following drivers are planned:
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net, block.
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config MLX5_VDPA_NET
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tristate "vDPA driver for ConnectX devices"
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select MLX5_VDPA
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select VHOST_RING
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depends on MLX5_CORE
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help
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VDPA network driver for ConnectX6 and newer. Provides offloading
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of virtio net datapath such that descriptors put on the ring will
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be executed by the hardware. It also supports a variety of stateless
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offloads depending on the actual device used and firmware version.
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config VP_VDPA
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tristate "Virtio PCI bridge vDPA driver"
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select VIRTIO_PCI_LIB
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depends on PCI_MSI
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help
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This kernel module bridges virtio PCI device to vDPA bus.
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endif # VDPA
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