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
|
/*
* Copyright (C) 2022 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#include <gtest/gtest.h>
#include <vintf/VintfObject.h>
#include <fstream>
#include <string>
#include "bpf/KernelUtils.h"
namespace android {
namespace net {
namespace {
using ::android::vintf::RuntimeInfo;
using ::android::vintf::VintfObject;
class KernelConfigVerifier final {
public:
KernelConfigVerifier() : mRuntimeInfo(VintfObject::GetRuntimeInfo()) {}
bool hasOption(const std::string& option) const {
const auto& configMap = mRuntimeInfo->kernelConfigs();
auto it = configMap.find(option);
if (it != configMap.cend()) {
return it->second == "y";
}
return false;
}
bool hasModule(const std::string& option) const {
const auto& configMap = mRuntimeInfo->kernelConfigs();
auto it = configMap.find(option);
if (it != configMap.cend()) {
return (it->second == "y") || (it->second == "m");
}
return false;
}
private:
std::shared_ptr<const RuntimeInfo> mRuntimeInfo;
};
} // namespace
/**
* If this test fails, enable the following kernel modules in your kernel config:
* CONFIG_NET_CLS_MATCHALL=y
* CONFIG_NET_ACT_POLICE=y
* CONFIG_NET_ACT_BPF=y
* CONFIG_BPF_JIT=y
*/
TEST(KernelTest, TestRateLimitingSupport) {
KernelConfigVerifier configVerifier;
EXPECT_TRUE(configVerifier.hasOption("CONFIG_NET_CLS_MATCHALL"));
EXPECT_TRUE(configVerifier.hasOption("CONFIG_NET_ACT_POLICE"));
EXPECT_TRUE(configVerifier.hasOption("CONFIG_NET_ACT_BPF"));
EXPECT_TRUE(configVerifier.hasOption("CONFIG_BPF_JIT"));
}
TEST(KernelTest, TestRequireBpfUnprivDefaultOn) {
KernelConfigVerifier configVerifier;
EXPECT_FALSE(configVerifier.hasOption("CONFIG_BPF_UNPRIV_DEFAULT_OFF"));
}
TEST(KernelTest, TestBpfJitAlwaysOn) {
// 32-bit arm & x86 kernels aren't capable of JIT-ing all of our BPF code,
if (bpf::isKernel32Bit()) GTEST_SKIP() << "Exempt on 32-bit kernel.";
KernelConfigVerifier configVerifier;
ASSERT_TRUE(configVerifier.hasOption("CONFIG_BPF_JIT_ALWAYS_ON"));
}
/* Android 14/U should only launch on 64-bit kernels
* T launches on 5.10/5.15
* U launches on 5.15/6.1
* So >=5.16 implies isKernel64Bit()
*/
TEST(KernelTest, TestKernel64Bit) {
if (!bpf::isAtLeastKernelVersion(5, 16, 0)) GTEST_SKIP() << "Exempt on < 5.16 kernel.";
ASSERT_TRUE(bpf::isKernel64Bit());
}
// Android V requires x86 kernels to be 64-bit, as among other things
// 32-bit x86 kernels have subtly different structure layouts for XFRM
TEST(KernelTest, TestX86Kernel64Bit) {
if (!bpf::isX86()) GTEST_SKIP() << "Exempt on non-x86 architecture.";
ASSERT_TRUE(bpf::isKernel64Bit());
}
// Android V requires 4.19+
TEST(KernelTest, TestKernel419) {
ASSERT_TRUE(bpf::isAtLeastKernelVersion(4, 19, 0));
}
TEST(KernelTest, TestIsLTS) {
ASSERT_TRUE(bpf::isLtsKernel());
}
static bool isGSI() {
// From //system/gsid/libgsi.cpp IsGsiRunning()
return !access("/metadata/gsi/dsu/booted", F_OK);
}
#define ifIsKernelThenMinLTS(major, minor, sub) do { \
if (isGSI()) GTEST_SKIP() << "Test is meaningless on GSI."; \
if (!bpf::isKernelVersion((major), (minor))) GTEST_SKIP() << "Not for this LTS ver."; \
ASSERT_TRUE(bpf::isAtLeastKernelVersion((major), (minor), (sub))); \
} while (0)
TEST(KernelTest, TestMinRequiredLTS_4_19) { ifIsKernelThenMinLTS(4, 19, 236); }
TEST(KernelTest, TestMinRequiredLTS_5_4) { ifIsKernelThenMinLTS(5, 4, 186); }
TEST(KernelTest, TestMinRequiredLTS_5_10) { ifIsKernelThenMinLTS(5, 10, 199); }
TEST(KernelTest, TestMinRequiredLTS_5_15) { ifIsKernelThenMinLTS(5, 15, 136); }
TEST(KernelTest, TestMinRequiredLTS_6_1) { ifIsKernelThenMinLTS(6, 1, 57); }
TEST(KernelTest, TestMinRequiredLTS_6_6) { ifIsKernelThenMinLTS(6, 6, 0); }
TEST(KernelTest, TestSupportsCommonUsbEthernetDongles) {
KernelConfigVerifier configVerifier;
if (!configVerifier.hasModule("CONFIG_USB")) GTEST_SKIP() << "Exempt without USB support.";
EXPECT_TRUE(configVerifier.hasModule("CONFIG_USB_NET_AX8817X"));
EXPECT_TRUE(configVerifier.hasModule("CONFIG_USB_NET_AX88179_178A"));
EXPECT_TRUE(configVerifier.hasModule("CONFIG_USB_NET_CDCETHER"));
EXPECT_TRUE(configVerifier.hasModule("CONFIG_USB_NET_CDC_EEM"));
EXPECT_TRUE(configVerifier.hasModule("CONFIG_USB_NET_CDC_NCM"));
if (bpf::isAtLeastKernelVersion(5, 4, 0))
EXPECT_TRUE(configVerifier.hasModule("CONFIG_USB_NET_AQC111"));
EXPECT_TRUE(configVerifier.hasModule("CONFIG_USB_RTL8152"));
EXPECT_TRUE(configVerifier.hasModule("CONFIG_USB_RTL8150"));
if (bpf::isAtLeastKernelVersion(5, 15, 0)) {
EXPECT_TRUE(configVerifier.hasModule("CONFIG_USB_RTL8153_ECM"));
EXPECT_TRUE(configVerifier.hasModule("CONFIG_AX88796B_PHY"));
}
}
} // namespace net
} // namespace android
|
