| /* |
| * 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, 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)); |
| } |
| |
| static bool isKernel(unsigned major, unsigned minor) { |
| return bpf::isAtLeastKernelVersion(major, minor, 0) |
| && !bpf::isAtLeastKernelVersion(major, minor + 1, 0); |
| } |
| |
| TEST(KernelTest, TestIsLTS) { |
| ASSERT_TRUE( |
| isKernel(4, 19) || |
| isKernel(5, 4) || |
| isKernel(5, 10) || |
| isKernel(5, 15) || |
| isKernel(6, 1) || |
| isKernel(6, 6)); |
| } |
| |
| #define ifIsKernelThenMinLTS(major, minor, sub) do { \ |
| if (!isKernel((major), (minor))) GTEST_SKIP() << "Not for this kernel major/minor version."; \ |
| 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 |