[dpdk-stable] [PATCH 00/15] Introduce Virtio vDPA driver

[Maxime Coquelin]

On 8/29/19 9:59 AM, Maxime Coquelin wrote:
> vDPA allows to offload Virtio Datapath processing by supported
> NICs, like IFCVF for example.
> 
> The control path has to be handled by a dedicated vDPA driver,
> so that it can translate Vhost-user protocol requests to
> proprietary NICs registers accesses.
> 
> This driver is the vDPA driver for Virtio devices, meaning
> that Vhost-user protocol requests get translated to Virtio
> registers accesses as per defined in the Virtio spec.
> 
> Basically, it can be used within a guest with a para-virtualized
> Virtio-net device, or even with a full Virtio HW offload NIC
> directly on host.
> 
> Amongst the main features, all currently supported Virtio spec
> versions are supported (split & packed rings, but only tested
> with split ring for now) and also multiqueue support is added
> by implementing the cotnrol virtqueue in the driver.
> 
> The structure of this driver is heavily based on IFCVF vDPA.
> 
> Maxime Coquelin (15):
>   vhost: remove vhost kernel header inclusion
>   vhost: configure vDPA as soon as the device is ready
>   net/virtio: move control path fonctions in virtqueue file
>   net/virtio: add virtio PCI subsystem device ID declaration
>   net/virtio: save notify bar ID in virtio HW struct
>   net/virtio: add skeleton for virtio vDPA driver
>   net/virtio: add vDPA ops to get number of queue
>   net/virtio: add virtio vDPA op to get features
>   net/virtio: add virtio vDPA op to get protocol features
>   net/virtio: add vDPA op to configure and start the device
>   net/virtio: add vDPA op to stop and close the device
>   net/virtio: add vDPA op to set features
>   net/virtio: add vDPA ops to get VFIO FDs
>   net/virtio: add vDPA op to get notification area
>   doc: add documentation for Virtio vDPA driver
> 
>  config/common_linux                |   1 +
>  doc/guides/nics/index.rst          |   1 +
>  doc/guides/nics/virtio_vdpa.rst    |  45 ++
>  drivers/net/ifc/ifcvf_vdpa.c       |   1 +
>  drivers/net/virtio/Makefile        |   4 +
>  drivers/net/virtio/meson.build     |   3 +-
>  drivers/net/virtio/virtio_ethdev.c | 252 --------
>  drivers/net/virtio/virtio_pci.c    |   6 +-
>  drivers/net/virtio/virtio_pci.h    |   2 +
>  drivers/net/virtio/virtio_vdpa.c   | 918 +++++++++++++++++++++++++++++
>  drivers/net/virtio/virtqueue.c     | 255 ++++++++
>  drivers/net/virtio/virtqueue.h     |   5 +
>  lib/librte_vhost/rte_vdpa.h        |   1 -
>  lib/librte_vhost/rte_vhost.h       |   9 +-
>  lib/librte_vhost/vhost_user.c      |   3 +-
>  15 files changed, 1243 insertions(+), 263 deletions(-)
>  create mode 100644 doc/guides/nics/virtio_vdpa.rst
>  create mode 100644 drivers/net/virtio/virtio_vdpa.c
> 

Deferring the series to v20.02.