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[nat64] enhance nat64 prefix unit test with prefix table check (#12091)

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This commit enhances the `TestNat64PrefixSelection` unit test by
adding more detailed verification of the RA-discovered NAT64 prefix
table managed by `RxRaTracker`.
This commit is contained in:
Yang Song
2025-11-06 00:24:10 +08:00
committed by GitHub
parent 241f6cfef0
commit 3c6097bf8f
1 changed files with 103 additions and 28 deletions
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tests/unit/test_routing_manager.cpp
+103 -28
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@@ -892,9 +892,9 @@ struct RaFlags : public Clearable<RaFlags>
bool mSnacRouterFlag;
};
struct Nat64Prefix
struct Pref64
{
Nat64Prefix(const Ip6::Prefix &aPrefix, uint32_t aLifetime)
Pref64(const Ip6::Prefix &aPrefix, uint32_t aLifetime)
: mPrefix(aPrefix)
, mLifetime(aLifetime)
{
@@ -930,8 +930,8 @@ void BuildRouterAdvert(Ip6::Nd::RouterAdvert::TxMessage &aRaMsg,
uint16_t aNumRios,
const Rdnss *aRdnsses,
uint16_t aNumRdnsses,
const Nat64Prefix *aNat64Prefixes,
uint16_t aNumNat64Prefixes,
const Pref64 *aPref64s,
uint16_t aNumPref64s,
const DefaultRoute &aDefaultRoute,
const RaFlags &aRaFlags)
{
@@ -969,9 +969,9 @@ void BuildRouterAdvert(Ip6::Nd::RouterAdvert::TxMessage &aRaMsg,
}
#if OPENTHREAD_CONFIG_NAT64_BORDER_ROUTING_ENABLE
for (; aNumNat64Prefixes > 0; aNat64Prefixes++, aNumNat64Prefixes--)
for (; aNumPref64s > 0; aPref64s++, aNumPref64s--)
{
SuccessOrQuit(aRaMsg.AppendNat64PrefixOption(aNat64Prefixes->mPrefix, aNat64Prefixes->mLifetime));
SuccessOrQuit(aRaMsg.AppendNat64PrefixOption(aPref64s->mPrefix, aPref64s->mLifetime));
}
#endif
@@ -989,15 +989,15 @@ void SendRouterAdvert(const Ip6::Address &aRouterAddress,
uint16_t aNumRios,
const Rdnss *aRdnsses,
uint16_t aNumRdnsses,
const Nat64Prefix *aNat64Prefixes,
uint16_t aNumNat64Prefixes,
const Pref64 *aPref64s,
uint16_t aNumPref64s,
const DefaultRoute &aDefaultRoute,
const RaFlags &aRaFlags)
{
Ip6::Nd::RouterAdvert::TxMessage raMsg;
Icmp6Packet packet;
BuildRouterAdvert(raMsg, aPios, aNumPios, aRios, aNumRios, aRdnsses, aNumRdnsses, aNat64Prefixes, aNumNat64Prefixes,
BuildRouterAdvert(raMsg, aPios, aNumPios, aRios, aNumRios, aRdnsses, aNumRdnsses, aPref64s, aNumPref64s,
aDefaultRoute, aRaFlags);
raMsg.GetAsPacket(packet);
@@ -1060,9 +1060,9 @@ void SendRouterAdvert(const Ip6::Address &aRouterAddress, const RaFlags &aRaFlag
DefaultRoute(0, NetworkData::kRoutePreferenceMedium), aRaFlags);
}
void SendRouterAdvert(const Ip6::Address &aRouterAddress, const Nat64Prefix &aNat64Pio)
void SendRouterAdvert(const Ip6::Address &aRouterAddress, const Pref64 &aPref64)
{
SendRouterAdvert(aRouterAddress, nullptr, 0, nullptr, 0, nullptr, 0, &aNat64Pio, 1,
SendRouterAdvert(aRouterAddress, nullptr, 0, nullptr, 0, nullptr, 0, &aPref64, 1,
DefaultRoute(0, NetworkData::kRoutePreferenceMedium), RaFlags());
}
@@ -1184,6 +1184,69 @@ void VerifyPrefixTable(const OnLinkPrefix *aOnLinkPrefixes,
void VerifyPrefixTableIsEmpty(void) { VerifyPrefixTable(nullptr, 0, nullptr, 0); }
#if OPENTHREAD_CONFIG_NAT64_BORDER_ROUTING_ENABLE
struct Nat64Prefix
{
Nat64Prefix(const Ip6::Prefix &aPrefix, uint32_t aLifetime, const Ip6::Address &aRouterAddress)
: mPrefix(aPrefix)
, mLifetime(aLifetime)
, mRouterAddress(aRouterAddress)
{
}
const Ip6::Prefix &mPrefix;
uint32_t mLifetime;
const Ip6::Address &mRouterAddress;
};
template <uint16_t kNumNat64Prefixes>
void VerifyNat64PrefixTable(const Nat64Prefix (&aNat64Prefixes)[kNumNat64Prefixes])
{
VerifyNat64PrefixTable(aNat64Prefixes, kNumNat64Prefixes);
}
void VerifyNat64PrefixTable(const Nat64Prefix *aNat64Prefixes, uint16_t aNumNat64Prefixes)
{
BorderRouter::PrefixTableIterator iter;
BorderRouter::Nat64PrefixEntry entry;
uint16_t count = 0;
Log("VerifyNat64PrefixTable()");
sInstance->Get<BorderRouter::RxRaTracker>().InitIterator(iter);
while (sInstance->Get<BorderRouter::RxRaTracker>().GetNextNat64PrefixEntry(iter, entry) == kErrorNone)
{
bool didFind = false;
Log(" nat64 prefix:%s, lifetime:%u, router:%s, age:%u", AsCoreType(&entry.mPrefix).ToString().AsCString(),
entry.mLifetime, AsCoreType(&entry.mRouter.mAddress).ToString().AsCString(),
entry.mMsecSinceLastUpdate / 1000);
count++;
for (uint16_t index = 0; index < aNumNat64Prefixes; index++)
{
const Nat64Prefix &nat64Prefix = aNat64Prefixes[index];
if ((nat64Prefix.mPrefix == AsCoreType(&entry.mPrefix)) &&
(AsCoreType(&entry.mRouter.mAddress) == nat64Prefix.mRouterAddress))
{
VerifyOrQuit(entry.mLifetime == nat64Prefix.mLifetime);
didFind = true;
break;
}
}
VerifyOrQuit(didFind);
}
VerifyOrQuit(count == aNumNat64Prefixes);
}
void VerifyNat64PrefixTableIsEmpty(void) { VerifyNat64PrefixTable(nullptr, 0); }
#endif // OPENTHREAD_CONFIG_NAT64_BORDER_ROUTING_ENABLE
struct RdnssAddress
{
RdnssAddress(const Ip6::Address &aAddress, uint32_t aLifetime, const Ip6::Address &aRouterAddress)
@@ -4619,51 +4682,63 @@ void TestNat64PrefixSelection(void)
VerifyNat64PrefixInNetData(infraIfNat64Prefix);
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// Send an RA from a router advertising a NAT64 prefix.
// Check that the RA-discovered NAT64 prefix is now favored and published.
// Send an RA from a router advertising a NAT64 prefix. Check that the RA-discovered NAT64 prefix is now favored
// and published. Check the RA-discovered NAT64 prefix table.
SendRouterAdvert(routerAddressA, Nat64Prefix(raTrackerNat64PrefixA, kValidLitime));
VerifyNat64PrefixTableIsEmpty();
SendRouterAdvert(routerAddressA, Pref64(raTrackerNat64PrefixA, kValidLitime));
AdvanceTime(20000);
VerifyOmrPrefixInNetData(omrPrefix, /* aDefaultRoute */ false);
VerifyNat64PrefixInNetData(raTrackerNat64PrefixA);
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// Send two RAs from routers B and C advertising two different NAT64 prefixes.
// Check that the numerically smallest prefix is now favored.
VerifyNat64PrefixTable({Nat64Prefix(raTrackerNat64PrefixA, kValidLitime, routerAddressA)});
SendRouterAdvert(routerAddressB, Nat64Prefix(raTrackerNat64PrefixB, kValidLitime));
SendRouterAdvert(routerAddressC, Nat64Prefix(raTrackerNat64PrefixC, kValidLitime));
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// Send two RAs from routers B and C advertising two different NAT64 prefixes. Check that the numerically smallest
// prefix is now favored. Check the RA-discovered NAT64 prefix table.
SendRouterAdvert(routerAddressB, Pref64(raTrackerNat64PrefixB, kValidLitime));
SendRouterAdvert(routerAddressC, Pref64(raTrackerNat64PrefixC, kValidLitime));
AdvanceTime(20000);
VerifyOmrPrefixInNetData(omrPrefix, /* aDefaultRoute */ false);
VerifyNat64PrefixInNetData(raTrackerNat64PrefixB);
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// Remove RA-discovered NAT64 prefix A and B from router A and B.
// Check that the remained RA-discovered prefix C is now favored.
VerifyNat64PrefixTable({Nat64Prefix(raTrackerNat64PrefixA, kValidLitime, routerAddressA),
Nat64Prefix(raTrackerNat64PrefixB, kValidLitime, routerAddressB),
Nat64Prefix(raTrackerNat64PrefixC, kValidLitime, routerAddressC)});
SendRouterAdvert(routerAddressA, Nat64Prefix(raTrackerNat64PrefixA, 0));
SendRouterAdvert(routerAddressB, Nat64Prefix(raTrackerNat64PrefixB, 0));
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// Remove RA-discovered NAT64 prefix A and B from router A and B. Check that the remained RA-discovered prefix C
// is now favored. Check the RA-discovered NAT64 prefix table.
SendRouterAdvert(routerAddressA, Pref64(raTrackerNat64PrefixA, 0));
SendRouterAdvert(routerAddressB, Pref64(raTrackerNat64PrefixB, 0));
AdvanceTime(20000);
VerifyOmrPrefixInNetData(omrPrefix, /* aDefaultRoute */ false);
VerifyNat64PrefixInNetData(raTrackerNat64PrefixC);
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// Remove RA-discovered NAT64 prefix C.
// Check that the infra-if NAT64 prefix is published again.
VerifyNat64PrefixTable({Nat64Prefix(raTrackerNat64PrefixC, kValidLitime, routerAddressC)});
SendRouterAdvert(routerAddressC, Nat64Prefix(raTrackerNat64PrefixC, 0));
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// Remove RA-discovered NAT64 prefix C. Check that the infra-if NAT64 prefix is published again. Check the
// RA-discovered NAT64 prefix table is empty.
SendRouterAdvert(routerAddressC, Pref64(raTrackerNat64PrefixC, 0));
AdvanceTime(20000);
VerifyOmrPrefixInNetData(omrPrefix, /* aDefaultRoute */ false);
VerifyNat64PrefixInNetData(infraIfNat64Prefix);
VerifyNat64PrefixTableIsEmpty();
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// InfraIf NAT64 prefix removed.
// Check local NAT64 prefix in Network Data.