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#
# Copyright (c) 2021 Nutanix Inc. All rights reserved.
#
# Authors: John Levon <john.levon@nutanix.com>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the name of Nutanix nor the names of its contributors may be
# used to endorse or promote products derived from this software without
# specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICESLOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
# DAMAGE.
#
from libvfio_user import *
import errno
#
# NB: this is currently very incomplete
#
ctx = None
@vfu_dma_register_cb_t
def dma_register(ctx, info):
pass
@vfu_dma_unregister_cb_t
def dma_unregister(ctx, info):
pass
return 0
def test_dma_map_setup():
global ctx
ctx = vfu_create_ctx(flags=LIBVFIO_USER_FLAG_ATTACH_NB)
assert ctx != None
ret = vfu_pci_init(ctx)
assert ret == 0
ret = vfu_setup_device_dma(ctx, dma_register, dma_unregister)
assert ret == 0
ret = vfu_realize_ctx(ctx)
assert ret == 0
def test_dma_region_too_big():
sock = connect_client(ctx)
payload = vfio_user_dma_map(argsz=len(vfio_user_dma_map()),
flags=(VFIO_USER_F_DMA_REGION_READ |
VFIO_USER_F_DMA_REGION_WRITE),
offset=0, addr=0x10000, size=MAX_DMA_SIZE + 4096)
hdr = vfio_user_header(VFIO_USER_DMA_MAP, size=len(payload))
sock.send(hdr + payload)
vfu_run_ctx(ctx)
get_reply(sock, expect=errno.ENOSPC)
disconnect_client(ctx, sock)
def test_dma_region_too_many():
sock = connect_client(ctx)
for i in range(1, MAX_DMA_REGIONS + 2):
payload = vfio_user_dma_map(argsz=len(vfio_user_dma_map()),
flags=(VFIO_USER_F_DMA_REGION_READ |
VFIO_USER_F_DMA_REGION_WRITE),
offset=0, addr=0x1000 * i, size=4096)
hdr = vfio_user_header(VFIO_USER_DMA_MAP, size=len(payload))
sock.send(hdr + payload)
vfu_run_ctx(ctx)
if i == MAX_DMA_REGIONS + 1:
get_reply(sock, expect=errno.EINVAL)
else:
get_reply(sock)
disconnect_client(ctx, sock)
def test_dirty_pages_cleanup():
vfu_destroy_ctx(ctx)
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