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228565100d
linux/drivers/vdpa
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Zhu Lingshan 228565100d vDPA: allow userspace to query features of a vDPA device 
This commit adds a new vDPA netlink attribution
VDPA_ATTR_VDPA_DEV_SUPPORTED_FEATURES. Userspace can query
features of vDPA devices through this new attr.

This commit invokes vdpa_config_ops.get_config()
rather than vdpa_get_config_unlocked() to read
the device config spcae, so no races in
vdpa_set_features_unlocked()

Userspace tool iproute2 example:
$ 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
  dev_features MTU MAC MRG_RXBUF CTRL_VQ MQ ANY_LAYOUT VERSION_1 ACCESS_PLATFORM

Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com>
Message-Id: <20220929014555.112323-2-lingshan.zhu@intel.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2022-10-07 20:00:42 -04:00
..
alibaba vdpa: multiple address spaces support 2022-05-31 12:44:27 -04:00
ifcvf vdpa/ifcvf: fix the calculation of queuepair 2022-09-27 18:30:48 -04:00
mlx5 vdpa/mlx5: Fix MQ to support non power of two num queues 2022-09-27 18:32:45 -04:00
vdpa_sim vdpa_sim_net: support feature provisioning 2022-10-07 09:32:40 -04:00
vdpa_user vduse: prevent uninitialized memory accesses 2022-09-27 18:32:45 -04:00
virtio_pci vp_vdpa: support feature provisioning 2022-10-07 09:32:41 -04:00
Kconfig eni_vdpa: add vDPA driver for Alibaba ENI 2021-11-01 05:23:41 -04:00
Makefile eni_vdpa: add vDPA driver for Alibaba ENI 2021-11-01 05:23:41 -04:00
vdpa.c vDPA: allow userspace to query features of a vDPA device 2022-10-07 20:00:42 -04:00