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Diffstat (limited to 'test/py/test_quiesce.py')
| -rw-r--r-- | test/py/test_quiesce.py | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/test/py/test_quiesce.py b/test/py/test_quiesce.py new file mode 100644 index 0000000..cf41e36 --- /dev/null +++ b/test/py/test_quiesce.py @@ -0,0 +1,109 @@ +# +# Copyright (c) 2021 Nutanix Inc. All rights reserved. +# +# Authors: Thanos Makatos <thanos.makatos@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 +# SERVICESLOSS 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 +from unittest.mock import patch + + +ctx = None + + +def setup_function(function): + global ctx, sock + ctx = prepare_ctx_for_dma() + assert ctx is not None + sock = connect_client(ctx) + + +def teardown_function(function): + global ctx + vfu_destroy_ctx(ctx) + + +@patch('libvfio_user.quiesce_cb') +def test_device_quiesced_no_quiesce_requested(mock_quiesce): + """ + Checks that vfu_device_quiesce returns an error if called when there is + no pending quiesce operation. + """ + + global ctx + ret = vfu_device_quiesced(ctx, 0) + assert ret == -1 + assert c.get_errno() == errno.EINVAL + assert mock_quiesce.call_count == 0 + + +@patch('libvfio_user.quiesce_cb', side_effect=fail_with_errno(errno.ENOTTY)) +def test_device_quiesce_error(mock_quiesce): + """ + Checks that if the device quiesce callback fails then the operation + that requested it also fails with the same error. + """ + + global ctx, sock + + 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=0x10000, size=0x1000) + + msg(ctx, sock, VFIO_USER_DMA_MAP, payload, errno.ENOTTY) + + +@patch('libvfio_user.dma_register') +@patch('libvfio_user.quiesce_cb', side_effect=fail_with_errno(errno.EBUSY)) +def test_device_quiesce_error_after_busy(mock_quiesce, mock_dma_register): + """ + Checks that the device fails to quiesce after it was busy quiescing. + """ + + global ctx, sock + + 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=0x10000, size=0x1000) + + msg(ctx, sock, VFIO_USER_DMA_MAP, payload, rsp=False, + expect_run_ctx_errno=errno.EBUSY) + + ret = vfu_device_quiesced(ctx, errno.ENOTTY) + assert ret == 0 + + mock_dma_register.assert_not_called() + + # check that the DMA region was NOT added + count, sgs = vfu_addr_to_sg(ctx, 0x10000, 0x1000) + assert count == -1 + assert c.get_errno() == errno.ENOENT + + +# ex: set tabstop=4 shiftwidth=4 softtabstop=4 expandtab: # |