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This commit introduces a new vDPA driver specifically designed for managing the virtio control plane over the vDPA bus for OCTEON DPU devices. The driver consists of two layers: 1. Octep HW Layer (Octeon Endpoint): Responsible for handling hardware operations and configurations related to the DPU device. 2. Octep Main Layer: Compliant with the vDPA bus framework, this layer implements device operations for the vDPA bus. It handles device probing, bus attachment, vring operations, and other relevant tasks. Signed-off-by: Srujana Challa <schalla@marvell.com> Signed-off-by: Vamsi Attunuru <vattunuru@marvell.com> Signed-off-by: Shijith Thotton <sthotton@marvell.com> Signed-off-by: Nithin Dabilpuram <ndabilpuram@marvell.com> Acked-by: Jason Wang <jasowang@redhat.com> Message-Id: <20240614144659.1776067-1-schalla@marvell.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
141 lines
4.3 KiB
Plaintext
141 lines
4.3 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 VDPA_USER
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tristate "VDUSE (vDPA Device in Userspace) support"
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depends on EVENTFD && MMU && HAS_DMA
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select DMA_OPS
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select VHOST_IOTLB
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select IOMMU_IOVA
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help
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With VDUSE it is possible to emulate a vDPA Device
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in a userspace program.
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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 MLX5_VDPA_STEERING_DEBUG
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bool "expose steering counters on debugfs"
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select MLX5_VDPA
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help
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Expose RX steering counters in debugfs to aid in debugging. For each VLAN
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or non VLAN interface, two hardware counters are added to the RX flow
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table: one for unicast and one for multicast.
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The counters counts the number of packets and bytes and exposes them in
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debugfs. Once can read the counters using, e.g.:
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cat /sys/kernel/debug/mlx5/mlx5_core.sf.1/vdpa-0/rx/untagged/ucast/packets
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cat /sys/kernel/debug/mlx5/mlx5_core.sf.1/vdpa-0/rx/untagged/mcast/bytes
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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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config ALIBABA_ENI_VDPA
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tristate "vDPA driver for Alibaba ENI"
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select VIRTIO_PCI_LIB_LEGACY
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depends on PCI_MSI && X86
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help
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VDPA driver for Alibaba ENI (Elastic Network Interface) which is built upon
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virtio 0.9.5 specification.
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config SNET_VDPA
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tristate "SolidRun's vDPA driver for SolidNET"
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depends on PCI_MSI && PCI_IOV && (HWMON || HWMON=n)
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# This driver MAY create a HWMON device.
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# Depending on (HWMON || HWMON=n) ensures that:
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# If HWMON=n the driver can be compiled either as a module or built-in.
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# If HWMON=y the driver can be compiled either as a module or built-in.
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# If HWMON=m the driver is forced to be compiled as a module.
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# By doing so, IS_ENABLED can be used instead of IS_REACHABLE
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help
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vDPA driver for SolidNET DPU.
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With this driver, the VirtIO dataplane can be
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offloaded to a SolidNET DPU.
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This driver includes a HW monitor device that
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reads health values from the DPU.
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config PDS_VDPA
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tristate "vDPA driver for AMD/Pensando DSC devices"
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select VIRTIO_PCI_LIB
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depends on PCI_MSI
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depends on PDS_CORE
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help
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vDPA network driver for AMD/Pensando's PDS Core devices.
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With this driver, the VirtIO dataplane can be
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offloaded to an AMD/Pensando DSC device.
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config OCTEONEP_VDPA
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tristate "vDPA driver for Octeon DPU devices"
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depends on m
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depends on PCI_MSI
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help
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This is a vDPA driver designed for Marvell's Octeon DPU devices.
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This driver enables the offloading of the VirtIO dataplane to an
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Octeon DPU device.
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Please note that this driver must be built as a module and it
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cannot be loaded until the Octeon emulation software is running.
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endif # VDPA
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