[PATCH v2 00/17] vdpa: generalize vdpa simulator

[Stefano Garzarella]

This series moves the network device simulator in a new module
(vdpa_sim_net) and leaves the generic functions in the vdpa_sim core
module, allowing the possibility to add new vDPA device simulators.

For now I removed the vdpa-blk simulator patches, since I'm still working
on them and debugging the iotlb issues.

Thanks to Max that started this work! I took his patches and extended a bit.

As Jason suggested, I simplified the "vdpa: split vdpasim to core and
net modules" patch, moving some changes out in small patches.
@Max: I put your Co-developed-by and Signed-off-by tags on these patches,
let me know if it is okay for you, or if there is a better way to give
credit to your work!

v1: https://lists.linuxfoundation.org/pipermail/virtualization/2020-November/050677.html

v2:
  - moved most of the patches before the vdpa-core/net split [Jason]
  - removed unnecessary headers
  - removed 'default n' in Kconfig entries [Jason]
  - added VDPASIM_IOTLB_LIMIT macro [Jason]
  - set vringh notify callback [Jason]
  - used VIRTIO terminology for in_iov/out_iov [Stefan]
  - simplified "vdpa: split vdpasim to core and net modules" patch,
    moving some changes out in small patches
  - left batch_mapping module parameter in the core [Jason]

Max Gurtovoy (2):
  vdpa_sim: remove hard-coded virtq count
  vdpa: split vdpasim to core and net modules

Stefano Garzarella (15):
  vdpa: remove unnecessary 'default n' in Kconfig entries
  vdpa_sim: remove unnecessary headers inclusion
  vdpa_sim: remove the limit of IOTLB entries
  vdpa_sim: rename vdpasim_config_ops variables
  vdpa_sim: add struct vdpasim_dev_attr for device attributes
  vdpa_sim: add device id field in vdpasim_dev_attr
  vdpa_sim: add supported_features field in vdpasim_dev_attr
  vdpa_sim: add work_fn in vdpasim_dev_attr
  vdpa_sim: store parsed MAC address in a buffer
  vdpa_sim: make 'config' generic and usable for any device type
  vdpa_sim: add get_config callback in vdpasim_dev_attr
  vdpa_sim: set vringh notify callback
  vdpa_sim: use kvmalloc to allocate vdpasim->buffer
  vdpa_sim: make vdpasim->buffer size configurable
  vdpa_sim: split vdpasim_virtqueue's iov field in out_iov and in_iov

 drivers/vdpa/vdpa_sim/vdpa_sim.h     | 103 ++++++++++
 drivers/vdpa/vdpa_sim/vdpa_sim.c     | 290 +++++++--------------------
 drivers/vdpa/vdpa_sim/vdpa_sim_net.c | 171 ++++++++++++++++
 drivers/vdpa/Kconfig                 |  16 +-
 drivers/vdpa/vdpa_sim/Makefile       |   1 +
 5 files changed, 351 insertions(+), 230 deletions(-)
 create mode 100644 drivers/vdpa/vdpa_sim/vdpa_sim.h
 create mode 100644 drivers/vdpa/vdpa_sim/vdpa_sim_net.c

-- 
2.26.2