205 lines
6.3 KiB
Python
205 lines
6.3 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 errno
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import struct
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ctx = None
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def client_version_json(expect=0, json=''):
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sock = connect_sock()
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payload = struct.pack("HH%dsc" % len(json),
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LIBVFIO_USER_MAJOR, LIBVFIO_USER_MINOR, json, b'\0')
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hdr = vfio_user_header(VFIO_USER_VERSION, size=len(payload))
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sock.send(hdr + payload)
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vfu_attach_ctx(ctx, expect=expect)
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payload = get_reply(sock, expect=expect)
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sock.close()
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return payload
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def test_server_setup():
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global ctx
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ctx = vfu_create_ctx()
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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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def test_short_write():
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sock = connect_sock()
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hdr = vfio_user_header(VFIO_USER_VERSION, size=0)
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sock.send(hdr)
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vfu_attach_ctx(ctx, expect=errno.EINVAL)
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get_reply(sock, expect=errno.EINVAL)
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def test_long_write():
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sock = connect_sock()
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hdr = vfio_user_header(VFIO_USER_VERSION, size=SERVER_MAX_MSG_SIZE + 1)
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sock.send(hdr)
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ret = vfu_attach_ctx(ctx, expect=errno.EINVAL)
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assert ret == -1
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assert c.get_errno() == errno.EINVAL
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def test_bad_command():
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sock = connect_sock()
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payload = struct.pack("HHs", LIBVFIO_USER_MAJOR, LIBVFIO_USER_MINOR, b"")
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hdr = vfio_user_header(999, size=len(payload))
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sock.send(hdr + payload)
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vfu_attach_ctx(ctx, expect=errno.EINVAL)
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get_reply(sock, expect=errno.EINVAL)
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def test_invalid_major():
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sock = connect_sock()
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payload = struct.pack("HHs", 999, LIBVFIO_USER_MINOR, b"")
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hdr = vfio_user_header(VFIO_USER_VERSION, size=len(payload))
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sock.send(hdr + payload)
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vfu_attach_ctx(ctx, expect=errno.EINVAL)
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get_reply(sock, expect=errno.EINVAL)
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def test_invalid_json_missing_NUL():
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sock = connect_sock()
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payload = struct.pack("HHcc", LIBVFIO_USER_MAJOR, LIBVFIO_USER_MINOR,
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b"{", b"}")
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hdr = vfio_user_header(VFIO_USER_VERSION, size=len(payload))
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sock.send(hdr + payload)
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vfu_attach_ctx(ctx, expect=errno.EINVAL)
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get_reply(sock, expect=errno.EINVAL)
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def test_invalid_json_missing_closing_brace():
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client_version_json(errno.EINVAL, b"{")
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def test_invalid_json_missing_closing_quote():
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client_version_json(errno.EINVAL, b'"')
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def test_invalid_json_bad_capabilities_object():
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client_version_json(errno.EINVAL, b'{ "capabilities": "23" }')
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def test_invalid_json_bad_max_fds():
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client_version_json(errno.EINVAL,
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b'{ "capabilities": { "max_msg_fds": "foo" } }')
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def test_invalid_json_bad_max_fds2():
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client_version_json(errno.EINVAL,
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b'{ "capabilities": { "max_msg_fds": -1 } }')
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def test_invalid_json_bad_max_fds3():
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client_version_json(errno.EINVAL,
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b'{ "capabilities": { "max_msg_fds": %d } }' %
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(VFIO_USER_CLIENT_MAX_FDS_LIMIT + 1))
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def test_invalid_json_bad_migration_object():
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client_version_json(errno.EINVAL,
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b'{ "capabilities": { "migration": "23" } }')
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def test_invalid_json_bad_pgsize():
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client_version_json(errno.EINVAL, b'{ "capabilities": ' +
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b'{ "migration": { "pgsize": "foo" } } }')
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#
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# FIXME: need vfu_setup_device_migration_callbacks() to be able to test this
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# failure mode.
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#
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def test_invalid_json_bad_pgsize2():
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if False:
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client_version_json(errno.EINVAL,
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b'{ "capabilities": { "migration": { "pgsize": 4095 } } }')
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def test_valid_negotiate_no_json():
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sock = connect_sock()
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payload = struct.pack("HH", LIBVFIO_USER_MAJOR, LIBVFIO_USER_MINOR)
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hdr = vfio_user_header(VFIO_USER_VERSION, size=len(payload))
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sock.send(hdr + payload)
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vfu_attach_ctx(ctx)
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payload = get_reply(sock)
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(major, minor, json_str, _) = struct.unpack("HH%dsc" % (len(payload) - 5),
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payload)
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assert major == LIBVFIO_USER_MAJOR
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assert minor == LIBVFIO_USER_MINOR
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json = parse_json(json_str)
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assert json.capabilities.max_msg_fds == SERVER_MAX_FDS
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assert json.capabilities.max_data_xfer_size == SERVER_MAX_DATA_XFER_SIZE
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# FIXME: migration object checks
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disconnect_client(ctx, sock)
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def test_valid_negotiate_empty_json():
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client_version_json(json=b'{}')
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# notice client closed connection
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vfu_run_ctx(ctx, expect=errno.ENOTCONN)
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def test_valid_negotiate_json():
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client_version_json(json=bytes(
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'{ "capabilities": { "max_msg_fds": %s, "max_data_xfer_size": %u } }' %
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(VFIO_USER_CLIENT_MAX_FDS_LIMIT, VFIO_USER_DEFAULT_MAX_DATA_XFER_SIZE),
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"utf-8"))
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# notice client closed connection
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vfu_run_ctx(ctx, expect=errno.ENOTCONN)
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def test_destroying():
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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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