module/vfu_device: vfu_virtio_fs introduced

This patch set implements the virtiofs vfio-user device based on SPDK fsdev +
FUSE dispatcher.

Steps to run w/QEMU:

1. Run target:

build/bin/spdk_tgt

module/vfu_device: vfu_virtio_fs introduced

This patch set implements the virtiofs vfio-user device based on SPDK fsdev +
FUSE dispatcher.

Steps to run w/QEMU:

1. Run target:

build/bin/spdk_tgt -S /tmp/vfio-sockets

2. Create an fsdev and a corresponding vfu endpoint:

spdk_rpc.py fsdev_aio_create aio0 /tmp/vfio-test
spdk_rpc.py vfu_virtio_create_fs_endpoint vfufs.0 --fsdev-name aio0 \
--tag vfu_test --cpumask=0x1 --num-queues=8 --qsize=256 --packed-ring

3. Run the QEMU with:

-device vfio-user-pci,socket=/tmp/vfio-sockets/vfufs.0

Then inside the VM:

$ mkdir /tmp/zzz
$ modprobe -v virtiofs
$ mount -t virtiofs vfu_test /tmp/zzz

NOTE: as the implementation is based upon the nutanix/libvfio-user library
([1]) similar to vfu_virtio_blk and vfu_virtio_scsi. It requires an QEMU
version that supports the vfio-virtio-pci devices. More information can be
found in the libvfio-user README ([2]).

[1] https://github.com/nutanix/libvfio-user
[2] https://github.com/nutanix/libvfio-user/blob/master/README.md

Change-Id: I182119aced0640d6f9290802d91f93b27294f468
Signed-off-by: Anton Nayshtut <anayshtut@nvidia.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/24086
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Ben Walker <ben@nvidia.com>
Reviewed-by: Jim Harris <jim.harris@samsung.com>
Community-CI: Mellanox Build Bot

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lib/fuse_dispatcher introduced

The FUSE dispatcher is an auxiliary library that manages an underlying fsdev
and implements the FUSE <=> fsdev API translation.

It provides an iovec-based API accordi

lib/fuse_dispatcher introduced

The FUSE dispatcher is an auxiliary library that manages an underlying fsdev
and implements the FUSE <=> fsdev API translation.

It provides an iovec-based API according to virtio-fs spec, where the iovecs
contain the FUSE-specific structures (IN and OUT).

So, the FUSE dispatcher:
- parses the FUSE requests
- opens and closes an fsdev upon the FUSE_INIT and FUSE_DESTROY requests
correspondingly
- translates the FUSE requests into the corresponding spdk_fsdev_op_... API
calls
- handles the FUSE responses

Change-Id: I587b9861c98531906000d23cd789be0d4f8d43be
Signed-off-by: Anton Nayshtut <anayshtut@nvidia.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/24085
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Ben Walker <ben@nvidia.com>
Reviewed-by: Jim Harris <jim.harris@samsung.com>

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check_format: For C files only, fix return type breaks

In SPDK, declarations have the return type on the same line. Definitions
have the return type on a separate line. Astyle has an option for
enfo

check_format: For C files only, fix return type breaks

In SPDK, declarations have the return type on the same line. Definitions
have the return type on a separate line. Astyle has an option for
enforcing this. Unfortunately, it seems to have two bugs:

1) It doesn't work correctly at all on C++ files.
2) It often fails on functions that return enums, or long type names

Deal with 1) by adjusting the check_format.sh script to only tell astyle
to fix return type line breaks for C files and not C++. Deal with 2) by
adding a few typedefs to work around the problem.

Change-Id: Idf28281466cab8411ce252d5f02ab384166790c6
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/13437
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Dong Yi <dongx.yi@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>

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vhost: update virtion_config.h and virtio_ring.h

Update the virtio_config.h to kernel version 5.0.
It supports more virtio flags which may be used in future
for example packed ring. Also it changed

vhost: update virtion_config.h and virtio_ring.h

Update the virtio_config.h to kernel version 5.0.
It supports more virtio flags which may be used in future
for example packed ring. Also it changed the
VIRTIO_TRANSPORT_F_END value 34 to 38.

Add the virtio_ring.h which will be used in packed ring
support.

Change-Id: If3fba1db400865eb8e09f6d2aa992b3893b65719
Signed-off-by: Jin Yu <jin.yu@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/477562
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>

show more ...