[PATCH v5 0/4] vduse: add support for networking devices

[Maxime Coquelin]

This small series enables virtio-net device type in VDUSE.
With it, basic operation have been tested, both with
virtio-vdpa and vhost-vdpa using DPDK Vhost library series
adding VDUSE support using split rings layout (merged in
DPDK v23.07-rc1).

Control queue support (and so multiqueue) has also been
tested, but requires a Kernel series from Jason Wang
relaxing control queue polling [1] to function reliably,
so while Jason rework is done, a patch is added to disable
CVQ and features that depend on it (tested also with DPDK
v23.07-rc1).

In this v5, LSM hooks introduced in previous revision are
unified into a single hook that covers below operations:
- VDUSE_CREATE_DEV ioctl on VDUSE control file,
- VDUSE_DESTROY_DEV ioctl on VDUSE control file,
- open() on VDUSE device file.

In combination with the operations permission, a device type
permission has to be associated:
- block: Virtio block device type,
- net: Virtio networking device type.

Changes in v5:
==============
- Move control queue disablement patch before Net
  devices enablement (Jason).
- Unify operations LSM hooks into a single hook.
- Rebase on latest master.

Maxime Coquelin (4):
  vduse: validate block features only with block devices
  vduse: Temporarily disable control queue features
  vduse: enable Virtio-net device type
  vduse: Add LSM hook to check Virtio device type

 MAINTAINERS                         |  1 +
 drivers/vdpa/vdpa_user/vduse_dev.c  | 65 +++++++++++++++++++++++++++--
 include/linux/lsm_hook_defs.h       |  2 +
 include/linux/security.h            |  6 +++
 include/linux/vduse.h               | 14 +++++++
 security/security.c                 | 15 +++++++
 security/selinux/hooks.c            | 32 ++++++++++++++
 security/selinux/include/classmap.h |  2 +
 8 files changed, 133 insertions(+), 4 deletions(-)
 create mode 100644 include/linux/vduse.h

-- 
2.43.0