[dpdk-dev] [PATCH 0/3] add ifcvf driver

Maxime Coquelin maxime.coquelin at redhat.com
Sat Mar 10 19:23:50 CET 2018


Hi Xiao,

On 03/10/2018 12:08 AM, Xiao Wang wrote:
> This patch set has dependency on http://dpdk.org/dev/patchwork/patch/35635/
> (vhost: support selective datapath);
> 
> ifc VF is compatible with virtio vring operations, this driver implements
> vDPA driver ops which configures ifc VF to be a vhost data path accelerator.
> 
> ifcvf driver uses vdev as a control domain to manage ifc VFs that belong
> to it. It registers vDPA device ops to vhost lib to enable these VFs to be
> used as vhost data path accelerator.
> 
> Live migration feature is supported by ifc VF and this driver enables
> it based on vhost lib.
> 
> vDPA needs to create different containers for different devices, thus this
> patch set adds APIs in eal/vfio to support multiple container.
Thanks for this! That will avoind having to duplicate these functions
for every new offload driver.


> 
> Junjie Chen (1):
>    eal/vfio: add support for multiple container
> 
> Xiao Wang (2):
>    bus/pci: expose sysfs parsing API

Still, I'm not convinced the offload device should be a virtual device.
It is a real PCI device, why not having a new device type for offload
devices, and let the device to be probed automatically by the existing
device model?

Thanks,
Maxime


>    net/ifcvf: add ifcvf driver
> 
>   config/common_base                       |    6 +
>   config/common_linuxapp                   |    1 +
>   drivers/bus/pci/linux/pci.c              |    9 +-
>   drivers/bus/pci/linux/pci_init.h         |    8 +
>   drivers/bus/pci/rte_bus_pci_version.map  |    8 +
>   drivers/net/Makefile                     |    1 +
>   drivers/net/ifcvf/Makefile               |   40 +
>   drivers/net/ifcvf/base/ifcvf.c           |  329 ++++++++
>   drivers/net/ifcvf/base/ifcvf.h           |  156 ++++
>   drivers/net/ifcvf/base/ifcvf_osdep.h     |   52 ++
>   drivers/net/ifcvf/ifcvf_ethdev.c         | 1241 ++++++++++++++++++++++++++++++
>   drivers/net/ifcvf/rte_ifcvf_version.map  |    4 +
>   lib/librte_eal/bsdapp/eal/eal.c          |   51 +-
>   lib/librte_eal/common/include/rte_vfio.h |  117 ++-
>   lib/librte_eal/linuxapp/eal/eal_vfio.c   |  553 ++++++++++---
>   lib/librte_eal/linuxapp/eal/eal_vfio.h   |    2 +
>   lib/librte_eal/rte_eal_version.map       |    7 +
>   mk/rte.app.mk                            |    1 +
>   18 files changed, 2480 insertions(+), 106 deletions(-)
>   create mode 100644 drivers/net/ifcvf/Makefile
>   create mode 100644 drivers/net/ifcvf/base/ifcvf.c
>   create mode 100644 drivers/net/ifcvf/base/ifcvf.h
>   create mode 100644 drivers/net/ifcvf/base/ifcvf_osdep.h
>   create mode 100644 drivers/net/ifcvf/ifcvf_ethdev.c
>   create mode 100644 drivers/net/ifcvf/rte_ifcvf_version.map
> 


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