[PATCH 0/4] ifcvf/vDPA implement features provisioning

Zhu, Lingshan
Wed, 09 Nov 2022 08:13:32 -0000

On 11/9/2022 2:51 PM, Jason Wang wrote:
> On Mon, Nov 7, 2022 at 5:42 PM Zhu Lingshan <lingshan.zhu at
intel.com> wrote:
>> This series implements features provisioning for ifcvf.
>> By applying this series, we allow userspace to create
>> a vDPA device with selected (management device supported)
>> feature bits and mask out others.
> I don't see a direct relationship between the first 3 and the last.
> Maybe you can state the reason why the restructure is a must for the
> feature provisioning. Otherwise, we'd better split the series.
When introducing features provisioning ability to ifcvf, there is a need
to re-create vDPA devices
on a VF with different feature bits.

When remove a vDPA device, the container of struct vdpa_device (here is
ifcvf_adapter) is free-ed in
dev_del() interface, so we need to allocate ifcvf_adapter in dev_add()
than in probe(). That's
why I have re-factored the adapter/mgmt_dev code.

For re-factoring the irq related code and ifcvf_base, let them work on
struct ifcvf_hw, the
reason is that the adapter is allocated in dev_add(), if we want theses
functions to work
before dev_add(), like in probe, we need them work on ifcvf_hw than the
adapter.

Thanks
Zhu Lingshan
>
> Thanks
>
>> Please help review
>>
>> Thanks
>>
>> Zhu Lingshan (4):
>>    vDPA/ifcvf: ifcvf base layer interfaces work on struct ifcvf_hw
>>    vDPA/ifcvf: IRQ interfaces work on ifcvf_hw
>>    vDPA/ifcvf: allocate ifcvf_adapter in dev_add()
>>    vDPA/ifcvf: implement features provisioning
>>
>>   drivers/vdpa/ifcvf/ifcvf_base.c |  32 ++-----
>>   drivers/vdpa/ifcvf/ifcvf_base.h |  10 +-
>>   drivers/vdpa/ifcvf/ifcvf_main.c | 156
+++++++++++++++-----------------
>>   3 files changed, 89 insertions(+), 109 deletions(-)
>>
>> --
>> 2.31.1
>>