245 lines
8 KiB
Python
245 lines
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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#
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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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from libvfio_user import *
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import ctypes as c
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import errno
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import tempfile
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ctx = None
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def test_setup_region_setup():
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global ctx
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ctx = vfu_create_ctx(flags=LIBVFIO_USER_FLAG_ATTACH_NB)
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assert ctx is not None
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def test_setup_region_bad_flags():
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ret = vfu_setup_region(ctx, index=VFU_PCI_DEV_BAR2_REGION_IDX,
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size=0x10000, flags=0x400)
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assert ret == -1
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assert c.get_errno() == errno.EINVAL
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ret = vfu_setup_region(ctx, index=VFU_PCI_DEV_BAR2_REGION_IDX,
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size=0x10000, flags=0)
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assert ret == -1
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assert c.get_errno() == errno.EINVAL
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def test_setup_region_bad_mmap_areas():
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f = tempfile.TemporaryFile()
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f.truncate(65536)
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mmap_areas = [(0x2000, 0x1000), (0x4000, 0x2000)]
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ret = vfu_setup_region(ctx, index=VFU_PCI_DEV_BAR2_REGION_IDX,
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size=0x10000,
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flags=(VFU_REGION_FLAG_RW | VFU_REGION_FLAG_MEM),
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mmap_areas=mmap_areas, nr_mmap_areas=0,
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fd=f.fileno())
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assert ret == -1
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assert c.get_errno() == errno.EINVAL
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ret = vfu_setup_region(ctx, index=VFU_PCI_DEV_BAR2_REGION_IDX,
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size=0x10000,
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flags=(VFU_REGION_FLAG_RW | VFU_REGION_FLAG_MEM),
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mmap_areas=None, nr_mmap_areas=1, fd=f.fileno())
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assert ret == -1
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assert c.get_errno() == errno.EINVAL
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ret = vfu_setup_region(ctx, index=VFU_PCI_DEV_BAR2_REGION_IDX,
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size=0x10000,
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flags=(VFU_REGION_FLAG_RW | VFU_REGION_FLAG_MEM),
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mmap_areas=mmap_areas, fd=-1)
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assert ret == -1
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assert c.get_errno() == errno.EINVAL
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mmap_areas = [(0x2000, 0x1000), (0x4000, 0x2000)]
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ret = vfu_setup_region(ctx, index=VFU_PCI_DEV_BAR2_REGION_IDX, size=0x5000,
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flags=(VFU_REGION_FLAG_RW | VFU_REGION_FLAG_MEM),
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mmap_areas=mmap_areas, fd=f.fileno())
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assert ret == -1
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assert c.get_errno() == errno.EINVAL
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def test_setup_region_bad_index():
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ret = vfu_setup_region(ctx, index=-2, size=0x10000,
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flags=(VFU_REGION_FLAG_RW | VFU_REGION_FLAG_MEM))
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assert ret == -1
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assert c.get_errno() == errno.EINVAL
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ret = vfu_setup_region(ctx, index=VFU_PCI_DEV_NUM_REGIONS, size=0x10000,
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flags=(VFU_REGION_FLAG_RW | VFU_REGION_FLAG_MEM))
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assert ret == -1
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assert c.get_errno() == errno.EINVAL
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def test_setup_region_bad_pci():
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ret = vfu_setup_region(ctx, index=VFU_PCI_DEV_CFG_REGION_IDX, size=0x1000,
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flags=(VFU_REGION_FLAG_RW | VFU_REGION_FLAG_MEM))
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assert ret == -1
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assert c.get_errno() == errno.EINVAL
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def test_setup_region_bad_migr():
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ret = vfu_setup_region(ctx, index=VFU_PCI_DEV_MIGR_REGION_IDX, size=512,
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flags=(VFU_REGION_FLAG_RW | VFU_REGION_FLAG_MEM))
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assert ret == -1
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assert c.get_errno() == errno.EINVAL
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f = tempfile.TemporaryFile()
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f.truncate(0x2000)
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ret = vfu_setup_region(ctx, index=VFU_PCI_DEV_MIGR_REGION_IDX, size=0x2000,
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flags=(VFU_REGION_FLAG_RW | VFU_REGION_FLAG_MEM),
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fd=f.fileno())
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assert ret == -1
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assert c.get_errno() == errno.EINVAL
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mmap_areas = [(0x0, 0x1000), (0x1000, 0x1000)]
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ret = vfu_setup_region(ctx, index=VFU_PCI_DEV_MIGR_REGION_IDX, size=0x2000,
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flags=(VFU_REGION_FLAG_RW | VFU_REGION_FLAG_MEM),
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mmap_areas=mmap_areas, fd=f.fileno())
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assert ret == -1
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assert c.get_errno() == errno.EINVAL
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def test_setup_region_cfg_always_cb_nocb():
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ret = vfu_setup_region(ctx, index=VFU_PCI_DEV_CFG_REGION_IDX,
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size=PCI_CFG_SPACE_EXP_SIZE, cb=None,
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flags=(VFU_REGION_FLAG_RW |
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VFU_REGION_FLAG_ALWAYS_CB))
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assert ret == -1
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assert c.get_errno() == errno.EINVAL
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@vfu_region_access_cb_t
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def pci_cfg_region_cb(ctx, buf, count, offset, is_write):
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if not is_write:
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for i in range(count):
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buf[i] = 0xcc
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return count
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def test_setup_region_cfg_always_cb():
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global ctx
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ret = vfu_setup_region(ctx, index=VFU_PCI_DEV_CFG_REGION_IDX,
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size=PCI_CFG_SPACE_EXP_SIZE, cb=pci_cfg_region_cb,
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flags=(VFU_REGION_FLAG_RW |
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VFU_REGION_FLAG_ALWAYS_CB))
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assert ret == 0
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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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payload = read_region(ctx, sock, VFU_PCI_DEV_CFG_REGION_IDX,
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offset=0, count=2)
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assert payload == b'\xcc\xcc'
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disconnect_client(ctx, sock)
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def test_region_offset_overflow():
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global ctx
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ret = vfu_setup_region(ctx, index=VFU_PCI_DEV_CFG_REGION_IDX,
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size=PCI_CFG_SPACE_EXP_SIZE, cb=pci_cfg_region_cb,
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flags=(VFU_REGION_FLAG_RW))
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assert ret == 0
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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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read_region(ctx, sock, VFU_PCI_DEV_CFG_REGION_IDX,
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offset=UINT64_MAX, count=256, expect=errno.EINVAL)
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disconnect_client(ctx, sock)
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def test_access_region_zero_count():
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global ctx
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ret = vfu_setup_region(ctx, index=VFU_PCI_DEV_BAR0_REGION_IDX,
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size=0x1000, flags=VFU_REGION_FLAG_RW)
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assert ret == 0
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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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payload = read_region(ctx, sock, VFU_PCI_DEV_BAR0_REGION_IDX, offset=0,
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count=0)
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assert payload == b''
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write_region(ctx, sock, VFU_PCI_DEV_BAR0_REGION_IDX, offset=0, count=0,
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data=payload)
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disconnect_client(ctx, sock)
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def test_access_region_large_count():
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global ctx
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sock = connect_client(ctx)
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read_region(ctx, sock, VFU_PCI_DEV_CFG_REGION_IDX, offset=0,
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count=SERVER_MAX_DATA_XFER_SIZE + 8, expect=errno.EINVAL)
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disconnect_client(ctx, sock)
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def test_region_offset_too_short():
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global ctx
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sock = connect_client(ctx)
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payload = struct.pack("Q", 0)
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msg(ctx, sock, VFIO_USER_REGION_WRITE, payload,
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expect=errno.EINVAL)
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disconnect_client(ctx, sock)
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def test_setup_region_cleanup():
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vfu_destroy_ctx(ctx)
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# ex: set tabstop=4 shiftwidth=4 softtabstop=4 expandtab: #
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