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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
# SERVICES; LOSS 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 ctypes as c
import errno
import tempfile
ctx = None
def test_device_set_irqs_setup():
global ctx
ctx = vfu_create_ctx(flags=LIBVFIO_USER_FLAG_ATTACH_NB)
assert ctx != None
def test_setup_region_bad_flags():
ret = vfu_setup_region(ctx, index=VFU_PCI_DEV_BAR2_REGION_IDX, size=0x10000,
flags=0x400)
assert ret == -1
assert c.get_errno() == errno.EINVAL
ret = vfu_setup_region(ctx, index=VFU_PCI_DEV_BAR2_REGION_IDX, size=0x10000,
flags=0)
assert ret == -1
assert c.get_errno() == errno.EINVAL
def test_setup_region_bad_mmap_areas():
f = tempfile.TemporaryFile()
f.truncate(65536)
mmap_areas = [ (0x2000, 0x1000), (0x4000, 0x2000) ]
ret = vfu_setup_region(ctx, index=VFU_PCI_DEV_BAR2_REGION_IDX, size=0x10000,
flags=(VFU_REGION_FLAG_RW | VFU_REGION_FLAG_MEM),
mmap_areas=mmap_areas, nr_mmap_areas=0,
fd=f.fileno())
assert ret == -1
assert c.get_errno() == errno.EINVAL
ret = vfu_setup_region(ctx, index=VFU_PCI_DEV_BAR2_REGION_IDX, size=0x10000,
flags=(VFU_REGION_FLAG_RW | VFU_REGION_FLAG_MEM),
mmap_areas=None, nr_mmap_areas=1, fd=f.fileno())
assert ret == -1
assert c.get_errno() == errno.EINVAL
ret = vfu_setup_region(ctx, index=VFU_PCI_DEV_BAR2_REGION_IDX, size=0x10000,
flags=(VFU_REGION_FLAG_RW | VFU_REGION_FLAG_MEM),
mmap_areas=mmap_areas, fd=-1)
assert ret == -1
assert c.get_errno() == errno.EINVAL
mmap_areas = [ (0x2000, 0x1000), (0x4000, 0x2000) ]
ret = vfu_setup_region(ctx, index=VFU_PCI_DEV_BAR2_REGION_IDX, size=0x5000,
flags=(VFU_REGION_FLAG_RW | VFU_REGION_FLAG_MEM),
mmap_areas=mmap_areas, fd=f.fileno())
assert ret == -1
assert c.get_errno() == errno.EINVAL
def test_setup_region_bad_index():
ret = vfu_setup_region(ctx, index=-2, size=0x10000,
flags=(VFU_REGION_FLAG_RW | VFU_REGION_FLAG_MEM))
assert ret == -1
assert c.get_errno() == errno.EINVAL
ret = vfu_setup_region(ctx, index=VFU_PCI_DEV_NUM_REGIONS, size=0x10000,
flags=(VFU_REGION_FLAG_RW | VFU_REGION_FLAG_MEM))
assert ret == -1
assert c.get_errno() == errno.EINVAL
def test_setup_region_bad_pci():
ret = vfu_setup_region(ctx, index=VFU_PCI_DEV_CFG_REGION_IDX, size=0x1000,
flags=(VFU_REGION_FLAG_RW | VFU_REGION_FLAG_MEM))
assert ret == -1
assert c.get_errno() == errno.EINVAL
def test_setup_region_bad_migr():
ret = vfu_setup_region(ctx, index=VFU_PCI_DEV_MIGR_REGION_IDX, size=512,
flags=(VFU_REGION_FLAG_RW | VFU_REGION_FLAG_MEM))
assert ret == -1
assert c.get_errno() == errno.EINVAL
f = tempfile.TemporaryFile()
f.truncate(0x2000)
ret = vfu_setup_region(ctx, index=VFU_PCI_DEV_MIGR_REGION_IDX, size=0x2000,
flags=(VFU_REGION_FLAG_RW | VFU_REGION_FLAG_MEM),
fd=f.fileno())
assert ret == -1
assert c.get_errno() == errno.EINVAL
mmap_areas = [ (0x0, 0x1000), (0x1000, 0x1000) ]
ret = vfu_setup_region(ctx, index=VFU_PCI_DEV_MIGR_REGION_IDX, size=0x2000,
flags=(VFU_REGION_FLAG_RW | VFU_REGION_FLAG_MEM),
mmap_areas=mmap_areas, fd=f.fileno())
assert ret == -1
assert c.get_errno() == errno.EINVAL
def test_setup_region_cfg_always_cb_nocb():
ret = vfu_setup_region(ctx, index=VFU_PCI_DEV_CFG_REGION_IDX,
size=PCI_CFG_SPACE_EXP_SIZE, cb=None,
flags=(VFU_REGION_FLAG_RW |
VFU_REGION_FLAG_ALWAYS_CB))
assert ret == -1
assert c.get_errno() == errno.EINVAL
@vfu_region_access_cb_t
def pci_cfg_region_cb(ctx, buf, count, offset, is_write):
if not is_write:
for i in range(count):
buf[i] = 0xcc
return count
def test_setup_region_cfg_always_cb():
global ctx
ret = vfu_setup_region(ctx, index=VFU_PCI_DEV_CFG_REGION_IDX,
size=PCI_CFG_SPACE_EXP_SIZE, cb=pci_cfg_region_cb,
flags=(VFU_REGION_FLAG_RW |
VFU_REGION_FLAG_ALWAYS_CB))
assert ret == 0
ret = vfu_realize_ctx(ctx)
assert ret == 0
sock = connect_client(ctx)
payload = read_region(ctx, sock, VFU_PCI_DEV_CFG_REGION_IDX, offset=0, count=2)
assert payload == b'\xcc\xcc'
disconnect_client(ctx, sock)
def test_setup_region_cleanup():
vfu_destroy_ctx(ctx)
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