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
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
|
//go:build !windows
// +build !windows
package ipvlan // import "github.com/docker/docker/integration/network/ipvlan"
import (
"context"
"os"
"os/exec"
"strings"
"sync"
"testing"
dclient "github.com/docker/docker/client"
"github.com/docker/docker/integration/internal/container"
net "github.com/docker/docker/integration/internal/network"
n "github.com/docker/docker/integration/network"
"github.com/docker/docker/testutil/daemon"
"gotest.tools/v3/assert"
"gotest.tools/v3/skip"
)
func TestDockerNetworkIpvlanPersistance(t *testing.T) {
// verify the driver automatically provisions the 802.1q link (di-dummy0.70)
skip.If(t, testEnv.IsRemoteDaemon)
skip.If(t, !ipvlanKernelSupport(t), "Kernel doesn't support ipvlan")
d := daemon.New(t)
d.StartWithBusybox(t)
defer d.Stop(t)
// master dummy interface 'di' notation represent 'docker ipvlan'
master := "di-dummy0"
n.CreateMasterDummy(t, master)
defer n.DeleteInterface(t, master)
c := d.NewClientT(t)
// create a network specifying the desired sub-interface name
netName := "di-persist"
net.CreateNoError(context.Background(), t, c, netName,
net.WithIPvlan("di-dummy0.70", ""),
)
assert.Check(t, n.IsNetworkAvailable(c, netName))
// Restart docker daemon to test the config has persisted to disk
d.Restart(t)
assert.Check(t, n.IsNetworkAvailable(c, netName))
}
func TestDockerNetworkIpvlan(t *testing.T) {
skip.If(t, testEnv.IsRemoteDaemon)
skip.If(t, !ipvlanKernelSupport(t), "Kernel doesn't support ipvlan")
for _, tc := range []struct {
name string
test func(dclient.APIClient) func(*testing.T)
}{
{
name: "Subinterface",
test: testIpvlanSubinterface,
}, {
name: "OverlapParent",
test: testIpvlanOverlapParent,
}, {
name: "L2NilParent",
test: testIpvlanL2NilParent,
}, {
name: "L2InternalMode",
test: testIpvlanL2InternalMode,
}, {
name: "L3NilParent",
test: testIpvlanL3NilParent,
}, {
name: "L3InternalMode",
test: testIpvlanL3InternalMode,
}, {
name: "L2MultiSubnet",
test: testIpvlanL2MultiSubnet,
}, {
name: "L3MultiSubnet",
test: testIpvlanL3MultiSubnet,
}, {
name: "Addressing",
test: testIpvlanAddressing,
},
} {
d := daemon.New(t)
d.StartWithBusybox(t)
c := d.NewClientT(t)
t.Run(tc.name, tc.test(c))
d.Stop(t)
// FIXME(vdemeester) clean network
}
}
func testIpvlanSubinterface(client dclient.APIClient) func(*testing.T) {
return func(t *testing.T) {
master := "di-dummy0"
n.CreateMasterDummy(t, master)
defer n.DeleteInterface(t, master)
netName := "di-subinterface"
net.CreateNoError(context.Background(), t, client, netName,
net.WithIPvlan("di-dummy0.60", ""),
)
assert.Check(t, n.IsNetworkAvailable(client, netName))
// delete the network while preserving the parent link
err := client.NetworkRemove(context.Background(), netName)
assert.NilError(t, err)
assert.Check(t, n.IsNetworkNotAvailable(client, netName))
// verify the network delete did not delete the predefined link
n.LinkExists(t, "di-dummy0")
}
}
func testIpvlanOverlapParent(client dclient.APIClient) func(*testing.T) {
return func(t *testing.T) {
// verify the same parent interface cannot be used if already in use by an existing network
master := "di-dummy0"
parent := master + ".30"
n.CreateMasterDummy(t, master)
defer n.DeleteInterface(t, master)
n.CreateVlanInterface(t, master, parent, "30")
netName := "di-subinterface"
net.CreateNoError(context.Background(), t, client, netName,
net.WithIPvlan(parent, ""),
)
assert.Check(t, n.IsNetworkAvailable(client, netName))
_, err := net.Create(context.Background(), client, netName,
net.WithIPvlan(parent, ""),
)
// verify that the overlap returns an error
assert.Check(t, err != nil)
}
}
func testIpvlanL2NilParent(client dclient.APIClient) func(*testing.T) {
return func(t *testing.T) {
// ipvlan l2 mode - dummy parent interface is provisioned dynamically
netName := "di-nil-parent"
net.CreateNoError(context.Background(), t, client, netName,
net.WithIPvlan("", ""),
)
assert.Check(t, n.IsNetworkAvailable(client, netName))
ctx := context.Background()
id1 := container.Run(ctx, t, client, container.WithNetworkMode(netName))
id2 := container.Run(ctx, t, client, container.WithNetworkMode(netName))
_, err := container.Exec(ctx, client, id2, []string{"ping", "-c", "1", id1})
assert.NilError(t, err)
}
}
func testIpvlanL2InternalMode(client dclient.APIClient) func(*testing.T) {
return func(t *testing.T) {
netName := "di-internal"
net.CreateNoError(context.Background(), t, client, netName,
net.WithIPvlan("", ""),
net.WithInternal(),
)
assert.Check(t, n.IsNetworkAvailable(client, netName))
ctx := context.Background()
id1 := container.Run(ctx, t, client, container.WithNetworkMode(netName))
id2 := container.Run(ctx, t, client, container.WithNetworkMode(netName))
result, _ := container.Exec(ctx, client, id1, []string{"ping", "-c", "1", "8.8.8.8"})
assert.Check(t, strings.Contains(result.Combined(), "Network is unreachable"))
_, err := container.Exec(ctx, client, id2, []string{"ping", "-c", "1", id1})
assert.NilError(t, err)
}
}
func testIpvlanL3NilParent(client dclient.APIClient) func(*testing.T) {
return func(t *testing.T) {
netName := "di-nil-parent-l3"
net.CreateNoError(context.Background(), t, client, netName,
net.WithIPvlan("", "l3"),
net.WithIPAM("172.28.230.0/24", ""),
net.WithIPAM("172.28.220.0/24", ""),
)
assert.Check(t, n.IsNetworkAvailable(client, netName))
ctx := context.Background()
id1 := container.Run(ctx, t, client,
container.WithNetworkMode(netName),
container.WithIPv4(netName, "172.28.220.10"),
)
id2 := container.Run(ctx, t, client,
container.WithNetworkMode(netName),
container.WithIPv4(netName, "172.28.230.10"),
)
_, err := container.Exec(ctx, client, id2, []string{"ping", "-c", "1", id1})
assert.NilError(t, err)
}
}
func testIpvlanL3InternalMode(client dclient.APIClient) func(*testing.T) {
return func(t *testing.T) {
netName := "di-internal-l3"
net.CreateNoError(context.Background(), t, client, netName,
net.WithIPvlan("", "l3"),
net.WithInternal(),
net.WithIPAM("172.28.230.0/24", ""),
net.WithIPAM("172.28.220.0/24", ""),
)
assert.Check(t, n.IsNetworkAvailable(client, netName))
ctx := context.Background()
id1 := container.Run(ctx, t, client,
container.WithNetworkMode(netName),
container.WithIPv4(netName, "172.28.220.10"),
)
id2 := container.Run(ctx, t, client,
container.WithNetworkMode(netName),
container.WithIPv4(netName, "172.28.230.10"),
)
result, _ := container.Exec(ctx, client, id1, []string{"ping", "-c", "1", "8.8.8.8"})
assert.Check(t, strings.Contains(result.Combined(), "Network is unreachable"))
_, err := container.Exec(ctx, client, id2, []string{"ping", "-c", "1", id1})
assert.NilError(t, err)
}
}
func testIpvlanL2MultiSubnet(client dclient.APIClient) func(*testing.T) {
return func(t *testing.T) {
netName := "dualstackl2"
net.CreateNoError(context.Background(), t, client, netName,
net.WithIPvlan("", ""),
net.WithIPv6(),
net.WithIPAM("172.28.200.0/24", ""),
net.WithIPAM("172.28.202.0/24", "172.28.202.254"),
net.WithIPAM("2001:db8:abc8::/64", ""),
net.WithIPAM("2001:db8:abc6::/64", "2001:db8:abc6::254"),
)
assert.Check(t, n.IsNetworkAvailable(client, netName))
// start dual stack containers and verify the user specified --ip and --ip6 addresses on subnets 172.28.100.0/24 and 2001:db8:abc2::/64
ctx := context.Background()
id1 := container.Run(ctx, t, client,
container.WithNetworkMode(netName),
container.WithIPv4(netName, "172.28.200.20"),
container.WithIPv6(netName, "2001:db8:abc8::20"),
)
id2 := container.Run(ctx, t, client,
container.WithNetworkMode(netName),
container.WithIPv4(netName, "172.28.200.21"),
container.WithIPv6(netName, "2001:db8:abc8::21"),
)
c1, err := client.ContainerInspect(ctx, id1)
assert.NilError(t, err)
// verify ipv4 connectivity to the explicit --ipv address second to first
_, err = container.Exec(ctx, client, id2, []string{"ping", "-c", "1", c1.NetworkSettings.Networks[netName].IPAddress})
assert.NilError(t, err)
// verify ipv6 connectivity to the explicit --ipv6 address second to first
_, err = container.Exec(ctx, client, id2, []string{"ping6", "-c", "1", c1.NetworkSettings.Networks[netName].GlobalIPv6Address})
assert.NilError(t, err)
// start dual stack containers and verify the user specified --ip and --ip6 addresses on subnets 172.28.102.0/24 and 2001:db8:abc4::/64
id3 := container.Run(ctx, t, client,
container.WithNetworkMode(netName),
container.WithIPv4(netName, "172.28.202.20"),
container.WithIPv6(netName, "2001:db8:abc6::20"),
)
id4 := container.Run(ctx, t, client,
container.WithNetworkMode(netName),
container.WithIPv4(netName, "172.28.202.21"),
container.WithIPv6(netName, "2001:db8:abc6::21"),
)
c3, err := client.ContainerInspect(ctx, id3)
assert.NilError(t, err)
// verify ipv4 connectivity to the explicit --ipv address from third to fourth
_, err = container.Exec(ctx, client, id4, []string{"ping", "-c", "1", c3.NetworkSettings.Networks[netName].IPAddress})
assert.NilError(t, err)
// verify ipv6 connectivity to the explicit --ipv6 address from third to fourth
_, err = container.Exec(ctx, client, id4, []string{"ping6", "-c", "1", c3.NetworkSettings.Networks[netName].GlobalIPv6Address})
assert.NilError(t, err)
// Inspect the v4 gateway to ensure the proper default GW was assigned
assert.Equal(t, c1.NetworkSettings.Networks[netName].Gateway, "172.28.200.1")
// Inspect the v6 gateway to ensure the proper default GW was assigned
assert.Equal(t, c1.NetworkSettings.Networks[netName].IPv6Gateway, "2001:db8:abc8::1")
// Inspect the v4 gateway to ensure the proper explicitly assigned default GW was assigned
assert.Equal(t, c3.NetworkSettings.Networks[netName].Gateway, "172.28.202.254")
// Inspect the v6 gateway to ensure the proper explicitly assigned default GW was assigned
assert.Equal(t, c3.NetworkSettings.Networks[netName].IPv6Gateway, "2001:db8:abc6::254")
}
}
func testIpvlanL3MultiSubnet(client dclient.APIClient) func(*testing.T) {
return func(t *testing.T) {
netName := "dualstackl3"
net.CreateNoError(context.Background(), t, client, netName,
net.WithIPvlan("", "l3"),
net.WithIPv6(),
net.WithIPAM("172.28.10.0/24", ""),
net.WithIPAM("172.28.12.0/24", "172.28.12.254"),
net.WithIPAM("2001:db8:abc9::/64", ""),
net.WithIPAM("2001:db8:abc7::/64", "2001:db8:abc7::254"),
)
assert.Check(t, n.IsNetworkAvailable(client, netName))
// start dual stack containers and verify the user specified --ip and --ip6 addresses on subnets 172.28.100.0/24 and 2001:db8:abc2::/64
ctx := context.Background()
id1 := container.Run(ctx, t, client,
container.WithNetworkMode(netName),
container.WithIPv4(netName, "172.28.10.20"),
container.WithIPv6(netName, "2001:db8:abc9::20"),
)
id2 := container.Run(ctx, t, client,
container.WithNetworkMode(netName),
container.WithIPv4(netName, "172.28.10.21"),
container.WithIPv6(netName, "2001:db8:abc9::21"),
)
c1, err := client.ContainerInspect(ctx, id1)
assert.NilError(t, err)
// verify ipv4 connectivity to the explicit --ipv address second to first
_, err = container.Exec(ctx, client, id2, []string{"ping", "-c", "1", c1.NetworkSettings.Networks[netName].IPAddress})
assert.NilError(t, err)
// verify ipv6 connectivity to the explicit --ipv6 address second to first
_, err = container.Exec(ctx, client, id2, []string{"ping6", "-c", "1", c1.NetworkSettings.Networks[netName].GlobalIPv6Address})
assert.NilError(t, err)
// start dual stack containers and verify the user specified --ip and --ip6 addresses on subnets 172.28.102.0/24 and 2001:db8:abc4::/64
id3 := container.Run(ctx, t, client,
container.WithNetworkMode(netName),
container.WithIPv4(netName, "172.28.12.20"),
container.WithIPv6(netName, "2001:db8:abc7::20"),
)
id4 := container.Run(ctx, t, client,
container.WithNetworkMode(netName),
container.WithIPv4(netName, "172.28.12.21"),
container.WithIPv6(netName, "2001:db8:abc7::21"),
)
c3, err := client.ContainerInspect(ctx, id3)
assert.NilError(t, err)
// verify ipv4 connectivity to the explicit --ipv address from third to fourth
_, err = container.Exec(ctx, client, id4, []string{"ping", "-c", "1", c3.NetworkSettings.Networks[netName].IPAddress})
assert.NilError(t, err)
// verify ipv6 connectivity to the explicit --ipv6 address from third to fourth
_, err = container.Exec(ctx, client, id4, []string{"ping6", "-c", "1", c3.NetworkSettings.Networks[netName].GlobalIPv6Address})
assert.NilError(t, err)
// Inspect the v4 gateway to ensure no next hop is assigned in L3 mode
assert.Equal(t, c1.NetworkSettings.Networks[netName].Gateway, "")
// Inspect the v6 gateway to ensure the explicitly specified default GW is ignored per L3 mode enabled
assert.Equal(t, c1.NetworkSettings.Networks[netName].IPv6Gateway, "")
// Inspect the v4 gateway to ensure no next hop is assigned in L3 mode
assert.Equal(t, c3.NetworkSettings.Networks[netName].Gateway, "")
// Inspect the v6 gateway to ensure the explicitly specified default GW is ignored per L3 mode enabled
assert.Equal(t, c3.NetworkSettings.Networks[netName].IPv6Gateway, "")
}
}
func testIpvlanAddressing(client dclient.APIClient) func(*testing.T) {
return func(t *testing.T) {
// Verify ipvlan l2 mode sets the proper default gateway routes via netlink
// for either an explicitly set route by the user or inferred via default IPAM
netNameL2 := "dualstackl2"
net.CreateNoError(context.Background(), t, client, netNameL2,
net.WithIPvlan("", "l2"),
net.WithIPv6(),
net.WithIPAM("172.28.140.0/24", "172.28.140.254"),
net.WithIPAM("2001:db8:abcb::/64", ""),
)
assert.Check(t, n.IsNetworkAvailable(client, netNameL2))
ctx := context.Background()
id1 := container.Run(ctx, t, client,
container.WithNetworkMode(netNameL2),
)
// Validate ipvlan l2 mode defaults gateway sets the default IPAM next-hop inferred from the subnet
result, err := container.Exec(ctx, client, id1, []string{"ip", "route"})
assert.NilError(t, err)
assert.Check(t, strings.Contains(result.Combined(), "default via 172.28.140.254 dev eth0"))
// Validate ipvlan l2 mode sets the v6 gateway to the user specified default gateway/next-hop
result, err = container.Exec(ctx, client, id1, []string{"ip", "-6", "route"})
assert.NilError(t, err)
assert.Check(t, strings.Contains(result.Combined(), "default via 2001:db8:abcb::1 dev eth0"))
// Validate ipvlan l3 mode sets the v4 gateway to dev eth0 and disregards any explicit or inferred next-hops
netNameL3 := "dualstackl3"
net.CreateNoError(context.Background(), t, client, netNameL3,
net.WithIPvlan("", "l3"),
net.WithIPv6(),
net.WithIPAM("172.28.160.0/24", "172.28.160.254"),
net.WithIPAM("2001:db8:abcd::/64", "2001:db8:abcd::254"),
)
assert.Check(t, n.IsNetworkAvailable(client, netNameL3))
id2 := container.Run(ctx, t, client,
container.WithNetworkMode(netNameL3),
)
// Validate ipvlan l3 mode sets the v4 gateway to dev eth0 and disregards any explicit or inferred next-hops
result, err = container.Exec(ctx, client, id2, []string{"ip", "route"})
assert.NilError(t, err)
assert.Check(t, strings.Contains(result.Combined(), "default dev eth0"))
// Validate ipvlan l3 mode sets the v6 gateway to dev eth0 and disregards any explicit or inferred next-hops
result, err = container.Exec(ctx, client, id2, []string{"ip", "-6", "route"})
assert.NilError(t, err)
assert.Check(t, strings.Contains(result.Combined(), "default dev eth0"))
}
}
var (
once sync.Once
ipvlanSupported bool
)
// figure out if ipvlan is supported by the kernel
func ipvlanKernelSupport(t *testing.T) bool {
once.Do(func() {
// this may have the side effect of enabling the ipvlan module
exec.Command("modprobe", "ipvlan").Run()
_, err := os.Stat("/sys/module/ipvlan")
if err == nil {
ipvlanSupported = true
} else if !os.IsNotExist(err) {
t.Logf("WARNING: ipvlanKernelSupport: stat failed: %v\n", err)
}
})
return ipvlanSupported
}
|
