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
|
// SPDX-License-Identifier: GPL-2.0
/* Author: Dmitry Safonov <dima@arista.com> */
/* This is over-simplified TCP_REPAIR for TCP_ESTABLISHED sockets
* It tests that TCP-AO enabled connection can be restored.
* For the proper socket repair see:
* https://github.com/checkpoint-restore/criu/blob/criu-dev/soccr/soccr.h
*/
#include <inttypes.h>
#include "aolib.h"
const size_t nr_packets = 20;
const size_t msg_len = 100;
const size_t quota = nr_packets * msg_len;
#define fault(type) (inj == FAULT_ ## type)
static void try_server_run(const char *tst_name, unsigned int port,
fault_t inj, test_cnt cnt_expected)
{
const char *cnt_name = "TCPAOGood";
struct tcp_ao_counters ao1, ao2;
uint64_t before_cnt, after_cnt;
int sk, lsk;
time_t timeout;
ssize_t bytes;
if (fault(TIMEOUT))
cnt_name = "TCPAOBad";
lsk = test_listen_socket(this_ip_addr, port, 1);
if (test_add_key(lsk, DEFAULT_TEST_PASSWORD, this_ip_dest, -1, 100, 100))
test_error("setsockopt(TCP_AO_ADD_KEY)");
synchronize_threads(); /* 1: MKT added => connect() */
if (test_wait_fd(lsk, TEST_TIMEOUT_SEC, 0))
test_error("test_wait_fd()");
sk = accept(lsk, NULL, NULL);
if (sk < 0)
test_error("accept()");
synchronize_threads(); /* 2: accepted => send data */
close(lsk);
bytes = test_server_run(sk, quota, TEST_TIMEOUT_SEC);
if (bytes != quota) {
test_fail("%s: server served: %zd", tst_name, bytes);
goto out;
}
before_cnt = netstat_get_one(cnt_name, NULL);
if (test_get_tcp_ao_counters(sk, &ao1))
test_error("test_get_tcp_ao_counters()");
timeout = fault(TIMEOUT) ? TEST_RETRANSMIT_SEC : TEST_TIMEOUT_SEC;
bytes = test_server_run(sk, quota, timeout);
if (fault(TIMEOUT)) {
if (bytes > 0)
test_fail("%s: server served: %zd", tst_name, bytes);
else
test_ok("%s: server couldn't serve", tst_name);
} else {
if (bytes != quota)
test_fail("%s: server served: %zd", tst_name, bytes);
else
test_ok("%s: server alive", tst_name);
}
synchronize_threads(); /* 3: counters checks */
if (test_get_tcp_ao_counters(sk, &ao2))
test_error("test_get_tcp_ao_counters()");
after_cnt = netstat_get_one(cnt_name, NULL);
test_tcp_ao_counters_cmp(tst_name, &ao1, &ao2, cnt_expected);
if (after_cnt <= before_cnt) {
test_fail("%s: %s counter did not increase: %" PRIu64 " <= %" PRIu64,
tst_name, cnt_name, after_cnt, before_cnt);
} else {
test_ok("%s: counter %s increased %" PRIu64 " => %" PRIu64,
tst_name, cnt_name, before_cnt, after_cnt);
}
/*
* Before close() as that will send FIN and move the peer in TCP_CLOSE
* and that will prevent reading AO counters from the peer's socket.
*/
synchronize_threads(); /* 4: verified => closed */
out:
close(sk);
}
static void *server_fn(void *arg)
{
unsigned int port = test_server_port;
try_server_run("TCP-AO migrate to another socket", port++,
0, TEST_CNT_GOOD);
try_server_run("TCP-AO with wrong send ISN", port++,
FAULT_TIMEOUT, TEST_CNT_BAD);
try_server_run("TCP-AO with wrong receive ISN", port++,
FAULT_TIMEOUT, TEST_CNT_BAD);
try_server_run("TCP-AO with wrong send SEQ ext number", port++,
FAULT_TIMEOUT, TEST_CNT_BAD);
try_server_run("TCP-AO with wrong receive SEQ ext number", port++,
FAULT_TIMEOUT, TEST_CNT_NS_BAD | TEST_CNT_GOOD);
synchronize_threads(); /* don't race to exit: client exits */
return NULL;
}
static void test_get_sk_checkpoint(unsigned int server_port, sockaddr_af *saddr,
struct tcp_sock_state *img,
struct tcp_ao_repair *ao_img)
{
int sk;
sk = socket(test_family, SOCK_STREAM, IPPROTO_TCP);
if (sk < 0)
test_error("socket()");
if (test_add_key(sk, DEFAULT_TEST_PASSWORD, this_ip_dest, -1, 100, 100))
test_error("setsockopt(TCP_AO_ADD_KEY)");
synchronize_threads(); /* 1: MKT added => connect() */
if (test_connect_socket(sk, this_ip_dest, server_port) <= 0)
test_error("failed to connect()");
synchronize_threads(); /* 2: accepted => send data */
if (test_client_verify(sk, msg_len, nr_packets, TEST_TIMEOUT_SEC))
test_fail("pre-migrate verify failed");
test_enable_repair(sk);
test_sock_checkpoint(sk, img, saddr);
test_ao_checkpoint(sk, ao_img);
test_kill_sk(sk);
}
static void test_sk_restore(const char *tst_name, unsigned int server_port,
sockaddr_af *saddr, struct tcp_sock_state *img,
struct tcp_ao_repair *ao_img,
fault_t inj, test_cnt cnt_expected)
{
const char *cnt_name = "TCPAOGood";
struct tcp_ao_counters ao1, ao2;
uint64_t before_cnt, after_cnt;
time_t timeout;
int sk;
if (fault(TIMEOUT))
cnt_name = "TCPAOBad";
before_cnt = netstat_get_one(cnt_name, NULL);
sk = socket(test_family, SOCK_STREAM, IPPROTO_TCP);
if (sk < 0)
test_error("socket()");
test_enable_repair(sk);
test_sock_restore(sk, img, saddr, this_ip_dest, server_port);
if (test_add_repaired_key(sk, DEFAULT_TEST_PASSWORD, 0, this_ip_dest, -1, 100, 100))
test_error("setsockopt(TCP_AO_ADD_KEY)");
test_ao_restore(sk, ao_img);
if (test_get_tcp_ao_counters(sk, &ao1))
test_error("test_get_tcp_ao_counters()");
test_disable_repair(sk);
test_sock_state_free(img);
timeout = fault(TIMEOUT) ? TEST_RETRANSMIT_SEC : TEST_TIMEOUT_SEC;
if (test_client_verify(sk, msg_len, nr_packets, timeout)) {
if (fault(TIMEOUT))
test_ok("%s: post-migrate connection is broken", tst_name);
else
test_fail("%s: post-migrate connection is working", tst_name);
} else {
if (fault(TIMEOUT))
test_fail("%s: post-migrate connection still working", tst_name);
else
test_ok("%s: post-migrate connection is alive", tst_name);
}
synchronize_threads(); /* 3: counters checks */
if (test_get_tcp_ao_counters(sk, &ao2))
test_error("test_get_tcp_ao_counters()");
after_cnt = netstat_get_one(cnt_name, NULL);
test_tcp_ao_counters_cmp(tst_name, &ao1, &ao2, cnt_expected);
if (after_cnt <= before_cnt) {
test_fail("%s: %s counter did not increase: %" PRIu64 " <= %" PRIu64,
tst_name, cnt_name, after_cnt, before_cnt);
} else {
test_ok("%s: counter %s increased %" PRIu64 " => %" PRIu64,
tst_name, cnt_name, before_cnt, after_cnt);
}
synchronize_threads(); /* 4: verified => closed */
close(sk);
}
static void *client_fn(void *arg)
{
unsigned int port = test_server_port;
struct tcp_sock_state tcp_img;
struct tcp_ao_repair ao_img;
sockaddr_af saddr;
test_get_sk_checkpoint(port, &saddr, &tcp_img, &ao_img);
test_sk_restore("TCP-AO migrate to another socket", port++,
&saddr, &tcp_img, &ao_img, 0, TEST_CNT_GOOD);
test_get_sk_checkpoint(port, &saddr, &tcp_img, &ao_img);
ao_img.snt_isn += 1;
trace_ao_event_expect(TCP_AO_MISMATCH, this_ip_addr, this_ip_dest,
-1, port, 0, -1, -1, -1, -1, -1, 100, 100, -1);
trace_ao_event_expect(TCP_AO_MISMATCH, this_ip_dest, this_ip_addr,
port, -1, 0, -1, -1, -1, -1, -1, 100, 100, -1);
test_sk_restore("TCP-AO with wrong send ISN", port++,
&saddr, &tcp_img, &ao_img, FAULT_TIMEOUT, TEST_CNT_BAD);
test_get_sk_checkpoint(port, &saddr, &tcp_img, &ao_img);
ao_img.rcv_isn += 1;
trace_ao_event_expect(TCP_AO_MISMATCH, this_ip_addr, this_ip_dest,
-1, port, 0, -1, -1, -1, -1, -1, 100, 100, -1);
trace_ao_event_expect(TCP_AO_MISMATCH, this_ip_dest, this_ip_addr,
port, -1, 0, -1, -1, -1, -1, -1, 100, 100, -1);
test_sk_restore("TCP-AO with wrong receive ISN", port++,
&saddr, &tcp_img, &ao_img, FAULT_TIMEOUT, TEST_CNT_BAD);
test_get_sk_checkpoint(port, &saddr, &tcp_img, &ao_img);
ao_img.snd_sne += 1;
trace_ao_event_expect(TCP_AO_MISMATCH, this_ip_addr, this_ip_dest,
-1, port, 0, -1, -1, -1, -1, -1, 100, 100, -1);
/* not expecting server => client mismatches as only snd sne is broken */
test_sk_restore("TCP-AO with wrong send SEQ ext number", port++,
&saddr, &tcp_img, &ao_img, FAULT_TIMEOUT,
TEST_CNT_NS_BAD | TEST_CNT_GOOD);
test_get_sk_checkpoint(port, &saddr, &tcp_img, &ao_img);
ao_img.rcv_sne += 1;
/* not expecting client => server mismatches as only rcv sne is broken */
trace_ao_event_expect(TCP_AO_MISMATCH, this_ip_dest, this_ip_addr,
port, -1, 0, -1, -1, -1, -1, -1, 100, 100, -1);
test_sk_restore("TCP-AO with wrong receive SEQ ext number", port++,
&saddr, &tcp_img, &ao_img, FAULT_TIMEOUT,
TEST_CNT_NS_GOOD | TEST_CNT_BAD);
return NULL;
}
int main(int argc, char *argv[])
{
test_init(21, server_fn, client_fn);
return 0;
}
|
