5004d7b8e8
Here we use vfu_tgt library and emulate a virtio-scsi device
as the next use case.
Compared with vhost-user-scsi, the packed ring is supported with this
patch.
Example usage method:
1. scripts/rpc.py bdev_malloc_create -b malloc0 $((512)) 512
2. scripts/rpc.py vfu_virtio_create_scsi_endpoint vfu.0 --cpumask 0x1 --num-io-queues=4 \
--qsize=128 --packed-ring
3. scripts/rpc.py vfu_virtio_scsi_add_target vfu.0 --scsi-target-num=0 --bdev-name malloc0
4. Start QEMU with '-device vfio-user-pci,socket=/spdk/vfu.0'
Change-Id: I8f35d1d21aaec34844d6ddb59dc997a64f141179
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/12673
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
109 lines
2.7 KiB
Python
109 lines
2.7 KiB
Python
def vfu_tgt_set_base_path(client, path):
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"""Set socket base path.
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Args:
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path: base path
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"""
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params = {
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'path': path
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}
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return client.call('vfu_tgt_set_base_path', params)
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def vfu_virtio_delete_endpoint(client, name):
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"""Delete specified endpoint name.
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Args:
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name: endpoint name
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"""
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params = {
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'name': name
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}
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return client.call('vfu_virtio_delete_endpoint', params)
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def vfu_virtio_create_blk_endpoint(client, name, bdev_name, cpumask, num_queues, qsize, packed_ring):
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"""Create virtio-blk endpoint.
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Args:
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name: endpoint name
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bdev_name: name of block device
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cpumask: CPU core mask
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num_queues: number of vrings
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qsize: number of element of each vring
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packed_ring: enable packed ring
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"""
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params = {
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'name': name,
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'bdev_name': bdev_name
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}
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if cpumask:
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params['cpumask'] = cpumask
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if num_queues:
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params['num_queues'] = num_queues
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if qsize:
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params['qsize'] = qsize
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if packed_ring:
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params['packed_ring'] = packed_ring
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return client.call('vfu_virtio_create_blk_endpoint', params)
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def vfu_virtio_scsi_add_target(client, name, scsi_target_num, bdev_name):
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"""Attach a block device to the specified SCSI target.
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Args:
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name: endpoint name
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scsi_target_num: SCSI target number
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bdev_name: name of block device
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"""
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params = {
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'name': name,
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'scsi_target_num': scsi_target_num,
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'bdev_name': bdev_name
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}
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return client.call('vfu_virtio_scsi_add_target', params)
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def vfu_virtio_scsi_remove_target(client, name, scsi_target_num):
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"""Remove specified SCSI target of socket endpoint.
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Args:
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name: endpoint name
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scsi_target_num: SCSI target number
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"""
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params = {
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'name': name,
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'scsi_target_num': scsi_target_num
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}
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return client.call('vfu_virtio_scsi_remove_target', params)
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def vfu_virtio_create_scsi_endpoint(client, name, cpumask, num_io_queues, qsize, packed_ring):
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"""Create virtio-scsi endpoint.
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Args:
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name: endpoint name
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cpumask: CPU core mask
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num_io_queues: number of IO vrings
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qsize: number of element of each vring
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packed_ring: enable packed ring
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"""
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params = {
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'name': name,
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}
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if cpumask:
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params['cpumask'] = cpumask
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if num_io_queues:
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params['num_io_queues'] = num_io_queues
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if qsize:
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params['qsize'] = qsize
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if packed_ring:
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params['packed_ring'] = packed_ring
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return client.call('vfu_virtio_create_scsi_endpoint', params)
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