Why is CONFIG_IP_MULTICAST not enabled in kernel?

Participate Development
1

Does FP2 not support multicast ? Does it have any H/W related limitations ?

2

What do you need it for? :slight_smile:
Chris

1 Like
3

I don’t know why people are posting here once and then disappear. @prityaa
Chris

2 Likes
4

Hello,

I think I know for what he would be needing it, e.g. it can be used in WiFi-Direct connections or for smartphone to multiple embedded device communication, or for any server application packed onto the Android stack, that needs this feature.

BR Erdinc

5

This topic was automatically closed 182 days after the last reply. New replies are no longer allowed.

7

@chrmhoffmann, this is in continuation with the following topic: https://forum.fairphone.com/t/why-is-config-ip-multicast-not-enabled-in-kernel/50855

We were trying to run CTS and were facing three failures related to CtsKernelConfigTestCases module.

kernel_config#CONFIG_IP_MULTICAST fail system/extras/tests/kernel.config/multicast_test.cpp:25: Failure
kernel_config#NOT_CONFIG_ANDROID_LOGGER fail system/extras/tests/kernel.config/logger_test.cpp:22: Failure
kernel_config#NOT_CONFIG_SYSVIPC fail system/extras/tests/kernel.config/sysvipc_test.cpp:44: Failure

Just wanted to know why we have CONFIG_IP_MULTICAST disabled in LOS 16 defconfig?
Any help/suggestion would be appreciated.

Thanks.

8

Well, I can add it.

Was just curious why it’s needed. It also seems that it was not enabled initially in the 3.4 series:
https://android.googlesource.com/kernel/common/+/refs/heads/deprecated/android-3.4/android/configs

While it seems to be recommended in more recent android (or kernel) versions:
https://android.googlesource.com/kernel/configs/+/refs/heads/master/android-4.14/android-base.config

9

https://review.lineageos.org/c/LineageOS/android_kernel_fairphone_msm8974/+/274535

1 Like
10

Thanks a lot @chrmhoffmann .
It’s working perfectly and CTS is passing.

11

@chrmhoffmann, there’s one more issue related to Kernel Hardening and Stackprotector Strong which is a new feature introduced in Oreo. As per Google’s recommendation I added those configs but CTS testcase related to stackprotector strong is failing.
I feel it’s not implemented.

Can you please help with this?

I am editing this post as I am not allowed to create more than 3 posts. @chrmhoffmann please look into this.

You want the complete file?
It’s not allowing me to upload the file.

In the mean time, this is the issue I was talking about;
<Test result=“fail” name=“testConfigStackProtectorStrong”
<Failure message=“java.lang.Exception”
java.lang.Exception
at android.security.cts.KernelConfigTest.getDeviceConfig(KernelConfigTest.java:84)
at android.security.cts.KernelConfigTest.setUp(KernelConfigTest.java:73)
at junit.framework.TestCase.runBare(TestCase.java:139)
at com.android.tradefed.testtype.DeviceTestResult$1.protect(DeviceTestResult.java:90)
at com.android.tradefed.testtype.DeviceTestResult.runProtected(DeviceTestResult.java:65)
at com.android.tradefed.testtype.DeviceTestResult.run(DeviceTestResult.java:94)
at junit.framework.TestCase.run(TestCase.java:129)
at com.android.tradefed.testtype.DeviceTestCase.run(DeviceTestCase.java:183)
at com.android.tradefed.testtype.JUnitRunUtil.runTest(JUnitRunUtil.java:55)
at com.android.tradefed.testtype.JUnitRunUtil.runTest(JUnitRunUtil.java:38)
at com.android.tradefed.testtype.DeviceTestCase.run(DeviceTestCase.java:148)
at com.android.tradefed.testtype.HostTest.runRemoteTest(HostTest.java:522)
at com.android.tradefed.testtype.HostTest.runTestClasses(HostTest.java:465)
at com.android.tradefed.testtype.HostTest.run(HostTest.java:455)
at com.android.compatibility.common.tradefed.testtype.JarHostTest.run(JarHostTest.java:53)
at com.android.tradefed.testtype.suite.GranularRetriableTestWrapper.intraModuleRun(GranularRetriableTestWrapper.java:276)
at com.android.tradefed.testtype.suite.GranularRetriableTestWrapper.run(GranularRetriableTestWrapper.java:222)
at com.android.tradefed.testtype.suite.ModuleDefinition.run(ModuleDefinition.java:397)
at com.android.tradefed.testtype.suite.ITestSuite.runSingleModule(ITestSuite.java:519)
at com.android.tradefed.testtype.suite.ITestSuite.run(ITestSuite.java:448)
at com.android.compatibility.common.tradefed.testtype.retry.RetryFactoryTest.run(RetryFactoryTest.java:177)
at com.android.tradefed.invoker.InvocationExecution.runTests(InvocationExecution.java:384)
at com.android.tradefed.invoker.TestInvocation.prepareAndRun(TestInvocation.java:358)
at com.android.tradefed.invoker.TestInvocation.performInvocation(TestInvocation.java:205)
at com.android.tradefed.invoker.TestInvocation.invoke(TestInvocation.java:667)
at com.android.tradefed.command.CommandScheduler$InvocationThread.run(CommandScheduler.java:566)


12

Could you please publish the cts result xml file?

Chris