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#
# Copyright (c) 2021 Nutanix Inc. All rights reserved.
#
# Authors: John Levon <john.levon@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
# SERVICES; LOSS 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
import struct
ctx = None
def client_version_json(expect=0, json=''):
sock = connect_sock()
payload = struct.pack("HH%dsc" % len(json),
LIBVFIO_USER_MAJOR, LIBVFIO_USER_MINOR, json, b'\0')
hdr = vfio_user_header(VFIO_USER_VERSION, size=len(payload))
sock.send(hdr + payload)
vfu_attach_ctx(ctx, expect=expect)
payload = get_reply(sock, expect=expect)
sock.close()
return payload
def test_server_setup():
global ctx
ctx = vfu_create_ctx()
assert ctx is not None
ret = vfu_realize_ctx(ctx)
assert ret == 0
def test_short_write():
sock = connect_sock()
hdr = vfio_user_header(VFIO_USER_VERSION, size=0)
sock.send(hdr)
vfu_attach_ctx(ctx, expect=errno.EINVAL)
get_reply(sock, expect=errno.EINVAL)
def test_long_write():
sock = connect_sock()
hdr = vfio_user_header(VFIO_USER_VERSION, size=SERVER_MAX_MSG_SIZE + 1)
sock.send(hdr)
ret = vfu_attach_ctx(ctx, expect=errno.EINVAL)
assert ret == -1
assert c.get_errno() == errno.EINVAL
def test_bad_command():
sock = connect_sock()
payload = struct.pack("HHs", LIBVFIO_USER_MAJOR, LIBVFIO_USER_MINOR, b"")
hdr = vfio_user_header(999, size=len(payload))
sock.send(hdr + payload)
vfu_attach_ctx(ctx, expect=errno.EINVAL)
get_reply(sock, expect=errno.EINVAL)
def test_invalid_major():
sock = connect_sock()
payload = struct.pack("HHs", 999, LIBVFIO_USER_MINOR, b"")
hdr = vfio_user_header(VFIO_USER_VERSION, size=len(payload))
sock.send(hdr + payload)
vfu_attach_ctx(ctx, expect=errno.EINVAL)
get_reply(sock, expect=errno.EINVAL)
def test_invalid_json_missing_NUL():
sock = connect_sock()
payload = struct.pack("HHcc", LIBVFIO_USER_MAJOR, LIBVFIO_USER_MINOR,
b"{", b"}")
hdr = vfio_user_header(VFIO_USER_VERSION, size=len(payload))
sock.send(hdr + payload)
vfu_attach_ctx(ctx, expect=errno.EINVAL)
get_reply(sock, expect=errno.EINVAL)
def test_invalid_json_missing_closing_brace():
client_version_json(errno.EINVAL, b"{")
def test_invalid_json_missing_closing_quote():
client_version_json(errno.EINVAL, b'"')
def test_invalid_json_bad_capabilities_object():
client_version_json(errno.EINVAL, b'{ "capabilities": "23" }')
def test_invalid_json_bad_max_fds():
client_version_json(errno.EINVAL,
b'{ "capabilities": { "max_msg_fds": "foo" } }')
def test_invalid_json_bad_max_fds2():
client_version_json(errno.EINVAL,
b'{ "capabilities": { "max_msg_fds": -1 } }')
def test_invalid_json_bad_max_fds3():
client_version_json(errno.EINVAL,
b'{ "capabilities": { "max_msg_fds": %d } }' %
(VFIO_USER_CLIENT_MAX_FDS_LIMIT + 1))
def test_invalid_json_bad_migration_object():
client_version_json(errno.EINVAL,
b'{ "capabilities": { "migration": "23" } }')
def test_invalid_json_bad_pgsize():
client_version_json(errno.EINVAL, b'{ "capabilities": ' +
b'{ "migration": { "pgsize": "foo" } } }')
#
# FIXME: need vfu_setup_device_migration_callbacks() to be able to test this
# failure mode.
#
def test_invalid_json_bad_pgsize2():
if False:
client_version_json(errno.EINVAL,
b'{ "capabilities": { "migration": { "pgsize": 4095 } } }')
def test_valid_negotiate_no_json():
sock = connect_sock()
payload = struct.pack("HH", LIBVFIO_USER_MAJOR, LIBVFIO_USER_MINOR)
hdr = vfio_user_header(VFIO_USER_VERSION, size=len(payload))
sock.send(hdr + payload)
vfu_attach_ctx(ctx)
payload = get_reply(sock)
(major, minor, json_str, _) = struct.unpack("HH%dsc" % (len(payload) - 5),
payload)
assert major == LIBVFIO_USER_MAJOR
assert minor == LIBVFIO_USER_MINOR
json = parse_json(json_str)
assert json.capabilities.max_msg_fds == SERVER_MAX_FDS
assert json.capabilities.max_data_xfer_size == SERVER_MAX_DATA_XFER_SIZE
# FIXME: migration object checks
disconnect_client(ctx, sock)
def test_valid_negotiate_empty_json():
client_version_json(json=b'{}')
# notice client closed connection
vfu_run_ctx(ctx, expect=errno.ENOTCONN)
def test_valid_negotiate_json():
client_version_json(json=bytes(
'{ "capabilities": { "max_msg_fds": %s, "max_data_xfer_size": %u } }' %
(VFIO_USER_CLIENT_MAX_FDS_LIMIT, VFIO_USER_DEFAULT_MAX_DATA_XFER_SIZE),
"utf-8"))
# notice client closed connection
vfu_run_ctx(ctx, expect=errno.ENOTCONN)
def test_destroying():
vfu_destroy_ctx(ctx)
# ex: set tabstop=4 shiftwidth=4 softtabstop=4 expandtab:
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