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#
# Copyright (c) 2021 Nutanix Inc. All rights reserved.
#
# Authors: John Levon <john.levon@nutanix.com>
# Swapnil Ingle <swapnil.ingle@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.
#
import errno
from libvfio_user import *
ctx = None
sock = None
def test_dma_unmap_setup():
global ctx, sock
ctx = prepare_ctx_for_dma()
assert ctx is not None
payload = struct.pack("II", 0, 0)
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=0x1000, size=4096)
msg(ctx, sock, VFIO_USER_DMA_MAP, payload)
def test_dma_unmap_short_write():
payload = struct.pack("II", 0, 0)
msg(ctx, sock, VFIO_USER_DMA_UNMAP, payload, expect=errno.EINVAL)
def test_dma_unmap_bad_argsz():
payload = vfio_user_dma_unmap(argsz=8, flags=0, addr=0x1000, size=4096)
msg(ctx, sock, VFIO_USER_DMA_UNMAP, payload, expect=errno.EINVAL)
def test_dma_unmap_bad_argsz2():
payload = vfio_user_dma_unmap(argsz=SERVER_MAX_DATA_XFER_SIZE + 8, flags=0,
addr=0x1000, size=4096)
msg(ctx, sock, VFIO_USER_DMA_UNMAP, payload, expect=errno.EINVAL)
def test_dma_unmap_dirty_bad_argsz():
argsz = len(vfio_user_dma_unmap()) + len(vfio_user_bitmap())
unmap = vfio_user_dma_unmap(argsz=argsz,
flags=VFIO_DMA_UNMAP_FLAG_GET_DIRTY_BITMAP, addr=0x10000, size=4096)
bitmap = vfio_user_bitmap(pgsize=4096, size=(UINT64_MAX - argsz) + 8)
payload = bytes(unmap) + bytes(bitmap)
msg(ctx, sock, VFIO_USER_DMA_UNMAP, payload, expect=errno.EINVAL)
def test_dma_unmap_invalid_flags():
payload = vfio_user_dma_unmap(argsz=len(vfio_user_dma_unmap()),
flags=0x4, addr=0x1000, size=4096)
msg(ctx, sock, VFIO_USER_DMA_UNMAP, payload, expect=errno.EINVAL)
def test_dma_unmap():
payload = vfio_user_dma_unmap(argsz=len(vfio_user_dma_unmap()),
flags=0, addr=0x1000, size=4096)
msg(ctx, sock, VFIO_USER_DMA_UNMAP, payload)
def test_dma_unmap_all():
for i in range(0, MAX_DMA_REGIONS):
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)
msg(ctx, sock, VFIO_USER_DMA_MAP, payload)
payload = vfio_user_dma_unmap(argsz=len(vfio_user_dma_unmap()),
flags=VFIO_DMA_UNMAP_FLAG_ALL, addr=0, size=0)
msg(ctx, sock, VFIO_USER_DMA_UNMAP, payload)
def test_dma_unmap_all_invalid_addr():
payload = vfio_user_dma_unmap(argsz=len(vfio_user_dma_unmap()),
flags=VFIO_DMA_UNMAP_FLAG_ALL, addr=0x10000, size=4096)
msg(ctx, sock, VFIO_USER_DMA_UNMAP, payload, expect=errno.EINVAL)
def test_dma_unmap_all_invalid_flags():
payload = vfio_user_dma_unmap(argsz=len(vfio_user_dma_unmap()),
flags=(VFIO_DMA_UNMAP_FLAG_ALL | VFIO_DMA_UNMAP_FLAG_GET_DIRTY_BITMAP),
addr=0, size=0)
msg(ctx, sock, VFIO_USER_DMA_UNMAP, payload, expect=errno.EINVAL)
def test_dma_unmap_cleanup():
disconnect_client(ctx, sock)
vfu_destroy_ctx(ctx)
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