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[routing-manager] persist deprecating old prefixes in Settings (#8330)

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This commit adds mechanism to save deprecating old on-link prefixes
in non-volatile `Settings`. With this, if the BR is restarted, it
will remember the old prefixes and keep deprecating them (advertising
them in emitted RA and publish them in Thread Network Data).

This commit also adds `TestSavedOnLinkPrefixes()` test case in
`test_routing_manager` to cover the behavior of the newly added
mechanism.
This commit is contained in:
Abtin Keshavarzian
2022-10-27 15:12:59 -07:00
committed by GitHub
parent b9b9c19640
commit ca8799a4b8
8 changed files with 473 additions and 21 deletions
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tests/unit/test_routing_manager.cpp
+179 -9
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@@ -856,6 +856,14 @@ void InitTest(void)
sRespondToNs = true;
}
void FinalizeTest(void)
{
SuccessOrQuit(otIp6SetEnabled(sInstance, false));
SuccessOrQuit(otThreadSetEnabled(sInstance, false));
SuccessOrQuit(otInstanceErasePersistentInfo(sInstance));
testFreeInstance(sInstance);
}
//---------------------------------------------------------------------------------------------------------------------
void TestSamePrefixesFromMultipleRouters(void)
@@ -1000,7 +1008,7 @@ void TestSamePrefixesFromMultipleRouters(void)
Log("End of TestSamePrefixesFromMultipleRouters");
testFreeInstance(sInstance);
FinalizeTest();
}
void TestOmrSelection(void)
@@ -1116,7 +1124,7 @@ void TestOmrSelection(void)
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Log("End of TestOmrSelection");
testFreeInstance(sInstance);
FinalizeTest();
}
void TestDefaultRoute(void)
@@ -1300,7 +1308,7 @@ void TestDefaultRoute(void)
Log("End of TestDefaultRoute");
testFreeInstance(sInstance);
FinalizeTest();
}
void TestLocalOnLinkPrefixDeprecation(void)
@@ -1437,7 +1445,7 @@ void TestLocalOnLinkPrefixDeprecation(void)
Log("End of TestLocalOnLinkPrefixDeprecation");
testFreeInstance(sInstance);
FinalizeTest();
}
#if OPENTHREAD_CONFIG_BACKBONE_ROUTER_ENABLE
@@ -1583,7 +1591,7 @@ void TestDomainPrefixAsOmr(void)
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Log("End of TestDomainPrefixAsOmr");
testFreeInstance(sInstance);
FinalizeTest();
}
#endif // OPENTHREAD_CONFIG_BACKBONE_ROUTER_ENABLE
@@ -2104,7 +2112,7 @@ void TestExtPanIdChange(void)
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Log("End of TestExtPanIdChange");
testFreeInstance(sInstance);
FinalizeTest();
}
void TestRouterNsProbe(void)
@@ -2252,7 +2260,7 @@ void TestRouterNsProbe(void)
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Log("End of TestRouterNsProbe");
testFreeInstance(sInstance);
FinalizeTest();
}
void TestConflictingPrefix(void)
@@ -2478,9 +2486,168 @@ void TestConflictingPrefix(void)
Log("End of TestConflictingPrefix");
testFreeInstance(sInstance);
FinalizeTest();
}
#if OPENTHREAD_CONFIG_PLATFORM_FLASH_API_ENABLE
void TestSavedOnLinkPrefixes(void)
{
static const otExtendedPanId kExtPanId1 = {{0x01, 0x02, 0x03, 0x04, 0x05, 0x6, 0x7, 0x08}};
Ip6::Prefix localOnLink;
Ip6::Prefix oldLocalOnLink;
Ip6::Prefix localOmr;
Ip6::Prefix onLinkPrefix = PrefixFromString("2000:abba:baba::", 64);
Ip6::Address routerAddressA = AddressFromString("fd00::aaaa");
otOperationalDataset dataset;
Log("--------------------------------------------------------------------------------------------");
Log("TestSavedOnLinkPrefixes");
InitTest();
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// Start Routing Manager. Check emitted RS and RA messages.
sRsEmitted = false;
sRaValidated = false;
sExpectedPio = kPioAdvertisingLocalOnLink;
sExpectedRios.Clear();
SuccessOrQuit(sInstance->Get<BorderRouter::RoutingManager>().SetEnabled(true));
SuccessOrQuit(sInstance->Get<BorderRouter::RoutingManager>().GetOnLinkPrefix(localOnLink));
SuccessOrQuit(sInstance->Get<BorderRouter::RoutingManager>().GetOmrPrefix(localOmr));
Log("Local on-link prefix is %s", localOnLink.ToString().AsCString());
Log("Local OMR prefix is %s", localOmr.ToString().AsCString());
sExpectedRios.Add(localOmr);
AdvanceTime(30000);
VerifyOrQuit(sRsEmitted);
VerifyOrQuit(sRaValidated);
VerifyOrQuit(sExpectedRios.SawAll());
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// Check Network Data to include the local OMR and on-link prefix.
VerifyOmrPrefixInNetData(localOmr);
VerifyExternalRoutesInNetData({ExternalRoute(localOnLink, NetworkData::kRoutePreferenceMedium)});
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Log("Changing ext PAN ID");
oldLocalOnLink = localOnLink;
sRaValidated = false;
sExpectedPio = kPioAdvertisingLocalOnLink;
SuccessOrQuit(otDatasetGetActive(sInstance, &dataset));
VerifyOrQuit(dataset.mComponents.mIsExtendedPanIdPresent);
dataset.mExtendedPanId = kExtPanId1;
dataset.mActiveTimestamp.mSeconds++;
SuccessOrQuit(otDatasetSetActive(sInstance, &dataset));
AdvanceTime(30000);
SuccessOrQuit(sInstance->Get<BorderRouter::RoutingManager>().GetOnLinkPrefix(localOnLink));
Log("Local on-link prefix changed to %s from %s", localOnLink.ToString().AsCString(),
oldLocalOnLink.ToString().AsCString());
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// Disable the instance and re-enable it.
Log("Disabling and re-enabling OT Instance");
testFreeInstance(sInstance);
InitTest();
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// Start Routing Manager.
SuccessOrQuit(sInstance->Get<BorderRouter::RoutingManager>().SetEnabled(true));
AdvanceTime(100);
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// Send RA from router A advertising an on-link prefix.
// This ensures the local on-link prefix is not advertised, but
// it must be deprecated since it was advertised last time and
// saved in `Settings`.
SendRouterAdvert(routerAddressA, {Pio(onLinkPrefix, kValidLitime, kPreferredLifetime)});
sRaValidated = false;
sExpectedPio = kPioDeprecatingLocalOnLink;
AdvanceTime(30000);
VerifyOrQuit(sRaValidated);
VerifyOrQuit(sDeprecatingPrefixes.GetLength() == 1);
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// Check the saved prefixes are in netdata and being
// deprecated.
VerifyExternalRoutesInNetData({ExternalRoute(localOnLink, NetworkData::kRoutePreferenceMedium),
ExternalRoute(oldLocalOnLink, NetworkData::kRoutePreferenceMedium),
ExternalRoute(onLinkPrefix, NetworkData::kRoutePreferenceMedium)});
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// Wait for more than 1800 seconds to let the deprecating
// prefixes expire (keep sending RA from router A).
for (uint16_t index = 0; index < 185; index++)
{
SendRouterAdvert(routerAddressA, {Pio(onLinkPrefix, kValidLitime, kPreferredLifetime)});
AdvanceTime(10 * 1000);
}
VerifyExternalRoutesInNetData({ExternalRoute(onLinkPrefix, NetworkData::kRoutePreferenceMedium)});
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// Disable the instance and re-enable it and restart Routing Manager.
Log("Disabling and re-enabling OT Instance again");
testFreeInstance(sInstance);
InitTest();
SuccessOrQuit(sInstance->Get<BorderRouter::RoutingManager>().SetEnabled(true));
AdvanceTime(100);
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// Send RA from router A advertising an on-link prefix.
SendRouterAdvert(routerAddressA, {Pio(onLinkPrefix, kValidLitime, kPreferredLifetime)});
sRaValidated = false;
sExpectedPio = kNoPio;
AdvanceTime(30000);
VerifyOrQuit(sRaValidated);
VerifyOrQuit(sDeprecatingPrefixes.GetLength() == 0);
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// Check that previously saved on-link prefixes are no longer
// seen in Network Data (indicating that they were removed from
// `Settings`).
VerifyExternalRoutesInNetData({ExternalRoute(onLinkPrefix, NetworkData::kRoutePreferenceMedium)});
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Log("End of TestSavedOnLinkPrefixes");
FinalizeTest();
}
#endif // OPENTHREAD_CONFIG_PLATFORM_FLASH_API_ENABLE
#if OPENTHREAD_CONFIG_SRP_SERVER_ENABLE
void TestAutoEnableOfSrpServer(void)
{
@@ -2684,7 +2851,7 @@ void TestAutoEnableOfSrpServer(void)
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Log("End of TestAutoEnableOfSrpServer");
testFreeInstance(sInstance);
FinalizeTest();
}
#endif // OPENTHREAD_CONFIG_SRP_SERVER_ENABLE
@@ -2703,6 +2870,9 @@ int main(void)
TestExtPanIdChange();
TestConflictingPrefix();
TestRouterNsProbe();
#if OPENTHREAD_CONFIG_PLATFORM_FLASH_API_ENABLE
TestSavedOnLinkPrefixes();
#endif
#if OPENTHREAD_CONFIG_SRP_SERVER_ENABLE
TestAutoEnableOfSrpServer();
#endif