207 lines
6.8 KiB
Python
207 lines
6.8 KiB
Python
#
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# Copyright (c) 2021 Nutanix Inc. All rights reserved.
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#
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# Authors: John Levon <john.levon@nutanix.com>
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# Swapnil Ingle <swapnil.ingle@nutanix.com>
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# * Neither the name of Nutanix nor the names of its contributors may be
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# used to endorse or promote products derived from this software without
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# specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
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# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
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# DAMAGE.
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#
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import errno
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from unittest.mock import patch
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from libvfio_user import *
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ctx = None
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sock = None
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def setup_function(function):
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global ctx, sock
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ctx = prepare_ctx_for_dma()
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assert ctx is not None
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ret = vfu_realize_ctx(ctx)
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assert ret == 0
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sock = connect_client(ctx)
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def teardown_function(function):
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global ctx, sock
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disconnect_client(ctx, sock)
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vfu_destroy_ctx(ctx)
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def setup_dma_regions(dma_regions=[(0x0, 0x1000)]):
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global ctx, sock
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for dma_region in dma_regions:
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payload = struct.pack("II", 0, 0)
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payload = vfio_user_dma_map(argsz=len(vfio_user_dma_map()),
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flags=(VFIO_USER_F_DMA_REGION_READ |
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VFIO_USER_F_DMA_REGION_WRITE),
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offset=0, addr=dma_region[0], size=dma_region[1])
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msg(ctx, sock, VFIO_USER_DMA_MAP, payload)
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def test_dma_unmap_short_write():
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payload = struct.pack("II", 0, 0)
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msg(ctx, sock, VFIO_USER_DMA_UNMAP, payload,
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expect=errno.EINVAL)
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def test_dma_unmap_bad_argsz():
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payload = vfio_user_dma_unmap(argsz=8, flags=0, addr=0x1000, size=4096)
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msg(ctx, sock, VFIO_USER_DMA_UNMAP, payload,
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expect=errno.EINVAL)
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def test_dma_unmap_bad_argsz2():
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payload = vfio_user_dma_unmap(argsz=SERVER_MAX_DATA_XFER_SIZE + 8, flags=0,
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addr=0x1000, size=4096)
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msg(ctx, sock, VFIO_USER_DMA_UNMAP, payload,
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expect=errno.EINVAL)
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def test_dma_unmap_dirty_bad_argsz():
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argsz = len(vfio_user_dma_unmap()) + len(vfio_user_bitmap())
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unmap = vfio_user_dma_unmap(argsz=argsz,
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flags=VFIO_DMA_UNMAP_FLAG_GET_DIRTY_BITMAP, addr=0x1000, size=4096)
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bitmap = vfio_user_bitmap(pgsize=4096, size=(UINT64_MAX - argsz) + 8)
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payload = bytes(unmap) + bytes(bitmap)
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msg(ctx, sock, VFIO_USER_DMA_UNMAP, payload,
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expect=errno.EINVAL)
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def test_dma_unmap_dirty_not_tracking():
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setup_dma_regions([(0x1000, 4096)])
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argsz = len(vfio_user_dma_unmap()) + len(vfio_user_bitmap()) + 8
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unmap = vfio_user_dma_unmap(argsz=argsz,
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flags=VFIO_DMA_UNMAP_FLAG_GET_DIRTY_BITMAP, addr=0x1000, size=4096)
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bitmap = vfio_user_bitmap(pgsize=4096, size=8)
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payload = bytes(unmap) + bytes(bitmap) + bytes(8)
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msg(ctx, sock, VFIO_USER_DMA_UNMAP, payload,
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expect=errno.EINVAL)
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def test_dma_unmap_dirty_not_mapped():
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setup_dma_regions([(0x1000, 4096)])
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vfu_setup_device_migration_callbacks(ctx, offset=0x1000)
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payload = vfio_user_dirty_pages(argsz=len(vfio_user_dirty_pages()),
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flags=VFIO_IOMMU_DIRTY_PAGES_FLAG_START)
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msg(ctx, sock, VFIO_USER_DIRTY_PAGES, payload)
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argsz = len(vfio_user_dma_unmap()) + len(vfio_user_bitmap()) + 8
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unmap = vfio_user_dma_unmap(argsz=argsz,
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flags=VFIO_DMA_UNMAP_FLAG_GET_DIRTY_BITMAP, addr=0x1000, size=4096)
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bitmap = vfio_user_bitmap(pgsize=4096, size=8)
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payload = bytes(unmap) + bytes(bitmap) + bytes(8)
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msg(ctx, sock, VFIO_USER_DMA_UNMAP, payload,
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expect=errno.EINVAL)
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def test_dma_unmap_invalid_flags():
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setup_dma_regions()
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payload = vfio_user_dma_unmap(argsz=len(vfio_user_dma_unmap()),
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flags=0x4, addr=0x1000, size=4096)
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msg(ctx, sock, VFIO_USER_DMA_UNMAP, payload,
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expect=errno.EINVAL)
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def test_dma_unmap():
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setup_dma_regions()
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payload = vfio_user_dma_unmap(argsz=len(vfio_user_dma_unmap()),
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flags=0, addr=0x0, size=0x1000)
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msg(ctx, sock, VFIO_USER_DMA_UNMAP, payload)
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def test_dma_unmap_invalid_addr():
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setup_dma_regions()
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payload = vfio_user_dma_unmap(argsz=len(vfio_user_dma_unmap()),
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addr=0x10000, size=4096)
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msg(ctx, sock, VFIO_USER_DMA_UNMAP, payload,
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expect=errno.ENOENT)
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@patch('libvfio_user.quiesce_cb')
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def test_dma_unmap_async(mock_quiesce):
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setup_dma_regions()
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mock_quiesce.side_effect = fail_with_errno(errno.EBUSY)
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payload = vfio_user_dma_unmap(argsz=len(vfio_user_dma_unmap()),
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flags=0, addr=0x0, size=0x1000)
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msg(ctx, sock, VFIO_USER_DMA_UNMAP, payload, rsp=False,
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busy=True)
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ret = vfu_device_quiesced(ctx, 0)
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assert ret == 0
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get_reply(sock)
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ret = vfu_run_ctx(ctx)
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assert ret == 0
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def test_dma_unmap_all():
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setup_dma_regions((0x1000*i, 0x1000) for i in range(MAX_DMA_REGIONS))
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payload = vfio_user_dma_unmap(argsz=len(vfio_user_dma_unmap()),
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flags=VFIO_DMA_UNMAP_FLAG_ALL, addr=0, size=0)
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msg(ctx, sock, VFIO_USER_DMA_UNMAP, payload)
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def test_dma_unmap_all_invalid_addr():
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payload = vfio_user_dma_unmap(argsz=len(vfio_user_dma_unmap()),
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flags=VFIO_DMA_UNMAP_FLAG_ALL, addr=0x10000, size=4096)
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msg(ctx, sock, VFIO_USER_DMA_UNMAP, payload,
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expect=errno.EINVAL)
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def test_dma_unmap_all_invalid_flags():
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payload = vfio_user_dma_unmap(argsz=len(vfio_user_dma_unmap()),
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flags=(VFIO_DMA_UNMAP_FLAG_ALL | VFIO_DMA_UNMAP_FLAG_GET_DIRTY_BITMAP),
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addr=0, size=0)
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msg(ctx, sock, VFIO_USER_DMA_UNMAP, payload,
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expect=errno.EINVAL)
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# FIXME need to add unit tests that test errors in get_request_header,
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# do_reply, vfu_dma_transfer
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# ex: set tabstop=4 shiftwidth=4 softtabstop=4 expandtab: #
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