127 lines
4.2 KiB
Python
127 lines
4.2 KiB
Python
#
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# Copyright (c) 2021 Nutanix Inc. All rights reserved.
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#
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# Authors: 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 ctypes
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import errno
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from libvfio_user import *
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import tempfile
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ctx = None
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def test_dma_sg_size():
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size = dma_sg_size()
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assert size == len(dma_sg_t())
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def test_sgl_get_with_invalid_region():
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global ctx
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ctx = prepare_ctx_for_dma()
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assert ctx is not None
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sg = dma_sg_t()
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iovec = iovec_t()
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ret = vfu_sgl_get(ctx, sg, iovec)
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assert ret == -1
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assert ctypes.get_errno() == errno.EINVAL
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def test_sgl_get_without_fd():
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sock = connect_client(ctx)
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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=0x1000, size=4096)
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msg(ctx, sock, VFIO_USER_DMA_MAP, payload)
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sg = dma_sg_t()
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iovec = iovec_t()
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sg.region = 0
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ret = vfu_sgl_get(ctx, sg, iovec)
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assert ret == -1
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assert ctypes.get_errno() == errno.EFAULT
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disconnect_client(ctx, sock)
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def test_get_multiple_sge():
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sock = connect_client(ctx)
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regions = 4
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f = tempfile.TemporaryFile()
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f.truncate(0x1000 * regions)
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for i in range(1, regions):
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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=0x1000 * i, size=4096)
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msg(ctx, sock, VFIO_USER_DMA_MAP, payload, fds=[f.fileno()])
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ret, sg = vfu_addr_to_sgl(ctx, dma_addr=0x1000, length=4096 * 3,
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max_nr_sgs=3, prot=mmap.PROT_READ)
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assert ret == 3
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iovec = (iovec_t * 3)()
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ret = vfu_sgl_get(ctx, sg, iovec, cnt=3)
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assert ret == 0
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assert iovec[0].iov_len == 4096
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assert iovec[1].iov_len == 4096
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assert iovec[2].iov_len == 4096
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disconnect_client(ctx, sock)
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def test_sgl_put():
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sock = connect_client(ctx)
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regions = 4
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f = tempfile.TemporaryFile()
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f.truncate(0x1000 * regions)
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for i in range(1, regions):
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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=0x1000 * i, size=4096)
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msg(ctx, sock, VFIO_USER_DMA_MAP, payload, fds=[f.fileno()])
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ret, sg = vfu_addr_to_sgl(ctx, dma_addr=0x1000, length=4096 * 3,
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max_nr_sgs=3, prot=mmap.PROT_READ)
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assert ret == 3
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iovec = (iovec_t * 3)()
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ret = vfu_sgl_get(ctx, sg, iovec, cnt=3)
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assert ret == 0
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vfu_sgl_put(ctx, sg, iovec, cnt=3)
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disconnect_client(ctx, sock)
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def test_sgl_get_put_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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