23ef63882c
Here we use vfu-tgt library and emulate a virtio-blk device
as the first use case of vfu-tgt library.
Usage example with QEMU:
1. build/bin/spdk_tgt
2. scripts/rpc.py bdev_malloc_create -b malloc0 $((512)) 512
3. scripts/rpc.py vfu_virtio_create_blk_endpoint vfu.0 --bdev-name malloc0 \
--cpumask=0x1 --num-queues=2 \
--qsize=256 --packed-ring
4. Start QEMU with '-device vfio-user-pci,socket=/spdk/vfu.0'
Change-Id: I45e45360c669584583b0b8a3f83250ab6c48efec
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/12315
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Community-CI: Mellanox Build Bot
52 lines
1.2 KiB
Python
52 lines
1.2 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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