[PATCH v4 0/3] Show statistics for a vdpa device

[Eli Cohen <elic@nvidia.com>]

The following three patch series adds support to read vendor statistics
for a vdpa device.

The first patch is just a cleanup fix.
The second patch lays the ground to allow an upstream driver to provide
statistics in the form of an attribute name/attribute value pairs.

The third patch implements this for mlx5_vdpa which gives received
descriptors and completed descriptors information for all the
virtqueues. 

Jason, I removed your ack from the mlx5 patch since I modified it a bit.
I am sending the userspace patch I was using following this series.

Eli Cohen (3):
  vdpa: Fix error logic in vdpa_nl_cmd_dev_get_doit
  vdpa: Add support for querying vendor statistics
  vdpa/mlx5: Add support for reading descriptor statistics

v3 -> v4:
Add a small cleanup fix patch
Only return statistics if feature negotiation is complete. 

 drivers/vdpa/mlx5/core/mlx5_vdpa.h |   2 +
 drivers/vdpa/mlx5/net/mlx5_vnet.c  | 171 +++++++++++++++++++++++++++++
 drivers/vdpa/vdpa.c                | 143 +++++++++++++++++++++++-
 include/linux/mlx5/mlx5_ifc.h      |   1 +
 include/linux/mlx5/mlx5_ifc_vdpa.h |  39 +++++++
 include/linux/vdpa.h               |   5 +
 include/uapi/linux/vdpa.h          |   6 +
 7 files changed, 363 insertions(+), 4 deletions(-)

-- 
2.35.1