1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
|
#
# 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 tempfile
ctx = None
sock = None
argsz = len(vfio_region_info())
migr_region_size = 2 << PAGE_SHIFT
migr_mmap_areas = [(PAGE_SIZE, PAGE_SIZE)]
def test_device_get_region_info_setup():
global ctx, sock
ctx = vfu_create_ctx(flags=LIBVFIO_USER_FLAG_ATTACH_NB)
assert ctx is not None
ret = vfu_setup_region(ctx, index=VFU_PCI_DEV_BAR1_REGION_IDX, size=4096,
flags=(VFU_REGION_FLAG_RW | VFU_REGION_FLAG_MEM))
assert ret == 0
f = tempfile.TemporaryFile()
f.truncate(65536)
mmap_areas = [(0x2000, 0x1000), (0x4000, 0x2000)]
ret = vfu_setup_region(ctx, index=VFU_PCI_DEV_BAR2_REGION_IDX, size=0x8000,
flags=(VFU_REGION_FLAG_RW | VFU_REGION_FLAG_MEM),
mmap_areas=mmap_areas, fd=f.fileno(), offset=0x8000)
assert ret == 0
f = tempfile.TemporaryFile()
f.truncate(65536)
mmap_areas = [(0x1000, 0x1000),
(0x2000, 0x1000),
(0x3000, 0x1000),
(0x4000, 0x1000),
(0x5000, 0x1000),
(0x6000, 0x1000),
(0x7000, 0x1000),
(0x8000, 0x1000),
(0x9000, 0x1000)]
ret = vfu_setup_region(ctx, index=VFU_PCI_DEV_BAR3_REGION_IDX,
size=0x10000,
flags=(VFU_REGION_FLAG_RW | VFU_REGION_FLAG_MEM),
mmap_areas=mmap_areas, fd=f.fileno(), offset=0x0)
assert ret == 0
f = tempfile.TemporaryFile()
f.truncate(migr_region_size)
ret = vfu_setup_region(ctx, index=VFU_PCI_DEV_MIGR_REGION_IDX,
size=migr_region_size, flags=VFU_REGION_FLAG_RW,
mmap_areas=migr_mmap_areas, fd=f.fileno())
assert ret == 0
ret = vfu_realize_ctx(ctx)
assert ret == 0
sock = connect_client(ctx)
def test_device_get_region_info_short_write():
payload = struct.pack("II", 0, 0)
msg(ctx, sock, VFIO_USER_DEVICE_GET_REGION_INFO, payload,
expect=errno.EINVAL)
def test_device_get_region_info_bad_argsz():
payload = vfio_region_info(argsz=8, flags=0,
index=VFU_PCI_DEV_BAR1_REGION_IDX, cap_offset=0,
size=0, offset=0)
msg(ctx, sock, VFIO_USER_DEVICE_GET_REGION_INFO, payload,
expect=errno.EINVAL)
def test_device_get_region_info_bad_index():
payload = vfio_region_info(argsz=argsz, flags=0,
index=VFU_PCI_DEV_NUM_REGIONS, cap_offset=0,
size=0, offset=0)
msg(ctx, sock, VFIO_USER_DEVICE_GET_REGION_INFO, payload,
expect=errno.EINVAL)
def test_device_get_region_info_larger_argsz():
payload = vfio_region_info(argsz=argsz + 8, flags=0,
index=VFU_PCI_DEV_BAR1_REGION_IDX, cap_offset=0,
size=0, offset=0)
result = msg(ctx, sock, VFIO_USER_DEVICE_GET_REGION_INFO, payload)
assert len(result) == argsz
info, _ = vfio_region_info.pop_from_buffer(result)
assert info.argsz == argsz
assert info.flags == (VFIO_REGION_INFO_FLAG_READ |
VFIO_REGION_INFO_FLAG_WRITE)
assert info.index == VFU_PCI_DEV_BAR1_REGION_IDX
assert info.cap_offset == 0
assert info.size == 4096
assert info.offset == 0
def test_device_get_region_info_small_argsz_caps():
global sock
payload = vfio_region_info(argsz=argsz, flags=0,
index=VFU_PCI_DEV_BAR2_REGION_IDX, cap_offset=0,
size=0, offset=0)
result = msg(ctx, sock, VFIO_USER_DEVICE_GET_REGION_INFO, payload)
info, _ = vfio_region_info.pop_from_buffer(result)
assert info.argsz == 80
'''
There are capabilites but we do not expect VFIO_REGION_INFO_FLAG_CAPS
to be set because they do not fit in reply as argsz is small
'''
assert info.flags == (VFIO_REGION_INFO_FLAG_READ |
VFIO_REGION_INFO_FLAG_WRITE |
VFIO_REGION_INFO_FLAG_MMAP)
assert info.index == VFU_PCI_DEV_BAR2_REGION_IDX
assert info.cap_offset == 0
assert info.size == 0x8000
assert info.offset == 0x8000
# skip reading the SCM_RIGHTS
disconnect_client(ctx, sock)
def test_device_get_region_info_caps():
global sock
sock = connect_client(ctx)
payload = vfio_region_info(argsz=80, flags=0,
index=VFU_PCI_DEV_BAR2_REGION_IDX, cap_offset=0,
size=0, offset=0)
payload = bytes(payload) + b'\0' * (80 - 32)
fds, result = msg_fds(ctx, sock, VFIO_USER_DEVICE_GET_REGION_INFO, payload)
info, result = vfio_region_info.pop_from_buffer(result)
cap, result = vfio_region_info_cap_sparse_mmap.pop_from_buffer(result)
area1, result = vfio_region_sparse_mmap_area.pop_from_buffer(result)
area2, result = vfio_region_sparse_mmap_area.pop_from_buffer(result)
assert info.argsz == 80
assert info.cap_offset == 32
assert info.size == 0x8000
assert info.offset == 0x8000
assert cap.id == VFIO_REGION_INFO_CAP_SPARSE_MMAP
assert cap.version == 1
assert cap.next == 0
assert cap.nr_areas == 2
assert area1.offset == 0x2000
assert area1.size == 0x1000
assert area2.offset == 0x4000
assert area2.size == 0x2000
assert len(fds) == 1
disconnect_client(ctx, sock)
def test_device_get_region_info_migr():
global sock
sock = connect_client(ctx)
payload = vfio_region_info(argsz=80, flags=0,
index=VFU_PCI_DEV_MIGR_REGION_IDX, cap_offset=0,
size=0, offset=0)
payload = bytes(payload) + b'\0' * (80 - 32)
result = msg(ctx, sock, VFIO_USER_DEVICE_GET_REGION_INFO, payload)
info, result = vfio_region_info.pop_from_buffer(result)
mcap, result = vfio_region_info_cap_type.pop_from_buffer(result)
cap, result = vfio_region_info_cap_sparse_mmap.pop_from_buffer(result)
area, result = vfio_region_sparse_mmap_area.pop_from_buffer(result)
assert info.argsz == 80
assert info.cap_offset == 32
assert mcap.id == VFIO_REGION_INFO_CAP_TYPE
assert mcap.version == 1
assert mcap.next == 48
assert mcap.type == VFIO_REGION_TYPE_MIGRATION
assert mcap.subtype == VFIO_REGION_SUBTYPE_MIGRATION
assert cap.id == VFIO_REGION_INFO_CAP_SPARSE_MMAP
assert cap.version == 1
assert cap.next == 0
assert cap.nr_areas == len(migr_mmap_areas) == 1
assert area.offset == migr_mmap_areas[0][0]
assert area.size == migr_mmap_areas[0][1]
# skip reading the SCM_RIGHTS
disconnect_client(ctx, sock)
def test_device_get_region_info_cleanup():
vfu_destroy_ctx(ctx)
def test_device_get_pci_config_space_info_implicit_pci_init():
"""Checks that the PCI config space is implicitly configured if
vfu_pci_init() is called."""
ctx = vfu_create_ctx(flags=LIBVFIO_USER_FLAG_ATTACH_NB)
assert ctx is not None
vfu_pci_init(ctx)
ret = vfu_realize_ctx(ctx)
assert ret == 0
sock = connect_client(ctx)
payload = vfio_region_info(argsz=argsz + 8, flags=0,
index=VFU_PCI_DEV_CFG_REGION_IDX, cap_offset=0,
size=0, offset=0)
result = msg(ctx, sock, VFIO_USER_DEVICE_GET_REGION_INFO, payload)
assert len(result) == argsz
info, _ = vfio_region_info.pop_from_buffer(result)
assert info.argsz == argsz
assert info.flags == (VFIO_REGION_INFO_FLAG_READ |
VFIO_REGION_INFO_FLAG_WRITE)
assert info.index == VFU_PCI_DEV_CFG_REGION_IDX
assert info.cap_offset == 0
# libvfio-user.py default to PCI Express in vfu_pci_init()
assert info.size == PCI_CFG_SPACE_EXP_SIZE
assert info.offset == 0
disconnect_client(ctx, sock)
vfu_destroy_ctx(ctx)
def test_device_get_pci_config_space_info_implicit_no_pci_init():
"""Checks that the PCI config space is implicitly configured even if
vfu_pci_init() is not called."""
ctx = vfu_create_ctx(flags=LIBVFIO_USER_FLAG_ATTACH_NB)
assert ctx is not None
ret = vfu_realize_ctx(ctx)
assert ret == 0
sock = connect_client(ctx)
payload = vfio_region_info(argsz=argsz + 8, flags=0,
index=VFU_PCI_DEV_CFG_REGION_IDX, cap_offset=0,
size=0, offset=0)
result = msg(ctx, sock, VFIO_USER_DEVICE_GET_REGION_INFO, payload)
assert len(result) == argsz
info, _ = vfio_region_info.pop_from_buffer(result)
assert info.argsz == argsz
assert info.flags == VFU_REGION_FLAG_RW
assert info.index == VFU_PCI_DEV_CFG_REGION_IDX
assert info.cap_offset == 0
assert info.size == PCI_CFG_SPACE_SIZE
assert info.offset == 0
disconnect_client(ctx, sock)
vfu_destroy_ctx(ctx)
# ex: set tabstop=4 shiftwidth=4 softtabstop=4 expandtab: #
|
