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.
Examples:
a)The management device supported features:
$ vdpa mgmtdev show pci/0000:01:00.5
pci/0000:01:00.5:
supported_classes net
max_supported_vqs 9
dev_features MTU MAC MRG_RXBUF CTRL_VQ MQ ANY_LAYOUT VERSION_1 ACCESS_PLATFORM
b)Provision a vDPA device with all supported features:
$ vdpa dev add name vdpa0 mgmtdev pci/0000:01:00.5
$ vdpa/vdpa dev config show vdpa0
vdpa0: mac 00:e8:ca:11:be:05 link up link_announce false max_vq_pairs 4 mtu 1500
negotiated_features MRG_RXBUF CTRL_VQ MQ VERSION_1 ACCESS_PLATFORM
c)Provision a vDPA device with a subset of the supported features:
$ vdpa dev add name vdpa0 mgmtdev pci/0000:01:00.5 device_features 0x300020020
$ vdpa dev config show vdpa0
mac 00:e8:ca:11:be:05 link up link_announce false
negotiated_features CTRL_VQ VERSION_1 ACCESS_PLATFORM
Please help review
Thanks
Changes from V1:
split original patch 1 ~ patch 3 to small patches that are less
than 100 lines, so they can be applied to stalbe kernel(Jason)
Zhu Lingshan (12):
vDPA/ifcvf: decouple hw features manipulators from the adapter
vDPA/ifcvf: decouple config space ops from the adapter
vDPA/ifcvf: alloc the mgmt_dev before the adapter
vDPA/ifcvf: decouple vq IRQ releasers from the adapter
vDPA/ifcvf: decouple config IRQ releaser from the adapter
vDPA/ifcvf: decouple vq irq requester from the adapter
vDPA/ifcvf: decouple config/dev IRQ requester and vectors allocator
from the adapter
vDPA/ifcvf: ifcvf_request_irq works on ifcvf_hw
vDPA/ifcvf: manage ifcvf_hw in the mgmt_dev
vDPA/ifcvf: allocate the adapter in dev_add()
vDPA/ifcvf: retire ifcvf_private_to_vf
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 | 162 +++++++++++++++-----------------
3 files changed, 91 insertions(+), 113 deletions(-)
--
2.31.1
