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
|
// SPDX-License-Identifier: GPL-2.0
/* Check what features does the kernel support (where the selftest is running).
* Somewhat inspired by CRIU kerndat/kdat kernel features detector.
*/
#include <pthread.h>
#include "aolib.h"
struct kconfig_t {
int _error; /* negative errno if not supported */
int (*check_kconfig)(int *error);
};
static int has_net_ns(int *err)
{
if (access("/proc/self/ns/net", F_OK) < 0) {
*err = errno;
if (errno == ENOENT)
return 0;
test_print("Unable to access /proc/self/ns/net: %m");
return -errno;
}
return *err = errno = 0;
}
static int has_veth(int *err)
{
int orig_netns, ns_a, ns_b;
orig_netns = open_netns();
ns_a = unshare_open_netns();
ns_b = unshare_open_netns();
*err = add_veth("check_veth", ns_a, ns_b);
switch_ns(orig_netns);
close(orig_netns);
close(ns_a);
close(ns_b);
return 0;
}
static int has_tcp_ao(int *err)
{
struct sockaddr_in addr = {
.sin_family = test_family,
};
struct tcp_ao_add tmp = {};
const char *password = DEFAULT_TEST_PASSWORD;
int sk, ret = 0;
sk = socket(test_family, SOCK_STREAM, IPPROTO_TCP);
if (sk < 0) {
test_print("socket(): %m");
return -errno;
}
tmp.sndid = 100;
tmp.rcvid = 100;
tmp.keylen = strlen(password);
memcpy(tmp.key, password, strlen(password));
strcpy(tmp.alg_name, "hmac(sha1)");
memcpy(&tmp.addr, &addr, sizeof(addr));
*err = 0;
if (setsockopt(sk, IPPROTO_TCP, TCP_AO_ADD_KEY, &tmp, sizeof(tmp)) < 0) {
*err = -errno;
if (errno != ENOPROTOOPT)
ret = -errno;
}
close(sk);
return ret;
}
static int has_tcp_md5(int *err)
{
union tcp_addr addr_any = {};
int sk, ret = 0;
sk = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (sk < 0) {
test_print("socket(): %m");
return -errno;
}
/*
* Under CONFIG_CRYPTO_FIPS=y it fails with ENOMEM, rather with
* anything more descriptive. Oh well.
*/
*err = 0;
if (test_set_md5(sk, addr_any, 0, -1, DEFAULT_TEST_PASSWORD)) {
*err = -errno;
if (errno != ENOPROTOOPT && errno == ENOMEM) {
test_print("setsockopt(TCP_MD5SIG_EXT): %m");
ret = -errno;
}
}
close(sk);
return ret;
}
static int has_vrfs(int *err)
{
int orig_netns, ns_test, ret = 0;
orig_netns = open_netns();
ns_test = unshare_open_netns();
*err = add_vrf("ksft-check", 55, 101, ns_test);
if (*err && *err != -EOPNOTSUPP) {
test_print("Failed to add a VRF: %d", *err);
ret = *err;
}
switch_ns(orig_netns);
close(orig_netns);
close(ns_test);
return ret;
}
static int has_ftrace(int *err)
{
*err = test_setup_tracing();
return 0;
}
#define KCONFIG_UNKNOWN 1
static pthread_mutex_t kconfig_lock = PTHREAD_MUTEX_INITIALIZER;
static struct kconfig_t kconfig[__KCONFIG_LAST__] = {
{ KCONFIG_UNKNOWN, has_net_ns },
{ KCONFIG_UNKNOWN, has_veth },
{ KCONFIG_UNKNOWN, has_tcp_ao },
{ KCONFIG_UNKNOWN, has_tcp_md5 },
{ KCONFIG_UNKNOWN, has_vrfs },
{ KCONFIG_UNKNOWN, has_ftrace },
};
const char *tests_skip_reason[__KCONFIG_LAST__] = {
"Tests require network namespaces support (CONFIG_NET_NS)",
"Tests require veth support (CONFIG_VETH)",
"Tests require TCP-AO support (CONFIG_TCP_AO)",
"setsockopt(TCP_MD5SIG_EXT) is not supported (CONFIG_TCP_MD5)",
"VRFs are not supported (CONFIG_NET_VRF)",
"Ftrace points are not supported (CONFIG_TRACEPOINTS)",
};
bool kernel_config_has(enum test_needs_kconfig k)
{
bool ret;
pthread_mutex_lock(&kconfig_lock);
if (kconfig[k]._error == KCONFIG_UNKNOWN) {
if (kconfig[k].check_kconfig(&kconfig[k]._error))
test_error("Failed to initialize kconfig %u", k);
}
ret = kconfig[k]._error == 0;
pthread_mutex_unlock(&kconfig_lock);
return ret;
}
|
