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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 errno
import tempfile
ctx = None
sock = None
argsz = len(vfio_region_info())
def test_device_get_region_info_setup():
global ctx, sock
ctx = vfu_create_ctx(flags=LIBVFIO_USER_FLAG_ATTACH_NB)
assert ctx is not None
ret = vfu_setup_region(ctx, index=VFU_PCI_DEV_BAR1_REGION_IDX, size=4096,
flags=(VFU_REGION_FLAG_RW | VFU_REGION_FLAG_MEM))
assert ret == 0
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=0x8000,
flags=(VFU_REGION_FLAG_RW | VFU_REGION_FLAG_MEM),
mmap_areas=mmap_areas, fd=f.fileno(), offset=0x8000)
assert ret == 0
f = tempfile.TemporaryFile()
f.truncate(0x2000)
mmap_areas = [(0x1000, 0x1000)]
ret = vfu_setup_region(ctx, index=VFU_PCI_DEV_MIGR_REGION_IDX, size=0x2000,
flags=VFU_REGION_FLAG_RW, mmap_areas=mmap_areas,
fd=f.fileno())
assert ret == 0
ret = vfu_realize_ctx(ctx)
assert ret == 0
sock = connect_client(ctx)
def test_device_get_region_info_short_write():
payload = struct.pack("II", 0, 0)
msg(ctx, sock, VFIO_USER_DEVICE_GET_REGION_INFO, payload,
expect=errno.EINVAL)
def test_device_get_region_info_bad_argsz():
payload = vfio_region_info(argsz=8, flags=0,
index=VFU_PCI_DEV_BAR1_REGION_IDX, cap_offset=0,
size=0, offset=0)
msg(ctx, sock, VFIO_USER_DEVICE_GET_REGION_INFO, payload,
expect=errno.EINVAL)
def test_device_get_region_info_bad_index():
payload = vfio_region_info(argsz=argsz, flags=0,
index=VFU_PCI_DEV_NUM_REGIONS, cap_offset=0,
size=0, offset=0)
msg(ctx, sock, VFIO_USER_DEVICE_GET_REGION_INFO, payload,
expect=errno.EINVAL)
def test_device_get_region_info_larger_argsz():
payload = vfio_region_info(argsz=argsz + 8, flags=0,
index=VFU_PCI_DEV_BAR1_REGION_IDX, cap_offset=0,
size=0, offset=0)
result = msg(ctx, sock, VFIO_USER_DEVICE_GET_REGION_INFO, payload)
assert(len(result) == argsz)
info, _ = vfio_region_info.pop_from_buffer(result)
assert info.argsz == argsz
assert info.flags == (VFIO_REGION_INFO_FLAG_READ |
VFIO_REGION_INFO_FLAG_WRITE)
assert info.index == VFU_PCI_DEV_BAR1_REGION_IDX
assert info.cap_offset == 0
assert info.size == 4096
assert info.offset == 0
def test_device_get_region_info_small_argsz_caps():
global sock
payload = vfio_region_info(argsz=argsz, flags=0,
index=VFU_PCI_DEV_BAR2_REGION_IDX, cap_offset=0,
size=0, offset=0)
result = msg(ctx, sock, VFIO_USER_DEVICE_GET_REGION_INFO, payload)
info, _ = vfio_region_info.pop_from_buffer(result)
assert info.argsz == 80
'''
There are capabilites but we do not expect VFIO_REGION_INFO_FLAG_CAPS
to be set because they do not fit in reply as argsz is small
'''
assert info.flags == (VFIO_REGION_INFO_FLAG_READ |
VFIO_REGION_INFO_FLAG_WRITE |
VFIO_REGION_INFO_FLAG_MMAP)
assert info.index == VFU_PCI_DEV_BAR2_REGION_IDX
assert info.cap_offset == 0
assert info.size == 0x8000
assert info.offset == 0x8000
# skip reading the SCM_RIGHTS
disconnect_client(ctx, sock)
def test_device_get_region_info_caps():
global sock
sock = connect_client(ctx)
payload = vfio_region_info(argsz=80, flags=0,
index=VFU_PCI_DEV_BAR2_REGION_IDX, cap_offset=0,
size=0, offset=0)
payload = bytes(payload) + b'\0' * (80 - 32)
result = msg(ctx, sock, VFIO_USER_DEVICE_GET_REGION_INFO, payload)
info, result = vfio_region_info.pop_from_buffer(result)
cap, result = vfio_region_info_cap_sparse_mmap.pop_from_buffer(result)
area1, result = vfio_region_sparse_mmap_area.pop_from_buffer(result)
area2, result = vfio_region_sparse_mmap_area.pop_from_buffer(result)
assert info.argsz == 80
assert info.cap_offset == 32
assert info.size == 0x8000
assert info.offset == 0x8000
assert cap.id == VFIO_REGION_INFO_CAP_SPARSE_MMAP
assert cap.version == 1
assert cap.next == 0
assert cap.nr_areas == 2
assert area1.offset == 0x2000
assert area1.size == 0x1000
assert area2.offset == 0x4000
assert area2.size == 0x2000
# skip reading the SCM_RIGHTS
disconnect_client(ctx, sock)
def test_device_get_region_info_migr():
global sock
sock = connect_client(ctx)
payload = vfio_region_info(argsz=80, flags=0,
index=VFU_PCI_DEV_MIGR_REGION_IDX, cap_offset=0,
size=0, offset=0)
payload = bytes(payload) + b'\0' * (80 - 32)
result = msg(ctx, sock, VFIO_USER_DEVICE_GET_REGION_INFO, payload)
info, result = vfio_region_info.pop_from_buffer(result)
mcap, result = vfio_region_info_cap_type.pop_from_buffer(result)
cap, result = vfio_region_info_cap_sparse_mmap.pop_from_buffer(result)
area, result = vfio_region_sparse_mmap_area.pop_from_buffer(result)
assert info.argsz == 80
assert info.cap_offset == 32
assert mcap.id == VFIO_REGION_INFO_CAP_TYPE
assert mcap.version == 1
assert mcap.next == 48
assert mcap.type == VFIO_REGION_TYPE_MIGRATION
assert mcap.subtype == VFIO_REGION_SUBTYPE_MIGRATION
assert cap.id == VFIO_REGION_INFO_CAP_SPARSE_MMAP
assert cap.version == 1
assert cap.next == 0
assert cap.nr_areas == 1
assert area.offset == 0x1000
assert area.size == 0x1000
# skip reading the SCM_RIGHTS
disconnect_client(ctx, sock)
def test_device_get_region_info_cleanup():
vfu_destroy_ctx(ctx)
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