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No Child Update Response for timed-out sleepy child (#1387)

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This commit is contained in:
rongli
2017-02-24 09:19:47 -08:00
committed by Jonathan Hui
parent 0fc8ab9810
commit 66eb5aae97
1 changed files with 22 additions and 15 deletions
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src/core/thread/mle_router.cpp
+22 -15
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@@ -2197,27 +2197,34 @@ ThreadError MleRouter::HandleChildUpdateRequest(const Message &aMessage, const I
otLogInfoMle("Received Child Update Request from child");
// Find Child
macAddr.Set(aMessageInfo.GetPeerAddr());
child = FindChild(macAddr);
if ((child == NULL) || (child->mState != Neighbor::kStateValid))
{
tlvs[tlvslength++] = Tlv::kStatus;
SendChildUpdateResponse(NULL, aMessageInfo, tlvs, tlvslength, NULL);
ExitNow();
}
tlvs[tlvslength++] = Tlv::kSourceAddress;
tlvs[tlvslength++] = Tlv::kLeaderData;
// Mode
SuccessOrExit(error = Tlv::GetTlv(aMessage, Tlv::kMode, sizeof(mode), mode));
VerifyOrExit(mode.IsValid(), error = kThreadError_Parse);
// Find Child
macAddr.Set(aMessageInfo.GetPeerAddr());
child = FindChild(macAddr);
tlvs[tlvslength++] = Tlv::kSourceAddress;
if ((child == NULL) || (child->mState != Neighbor::kStateValid))
{
// Send Child Update Response with status TLV(error) for invalid non-sleepy child
// No Child Update Response for invalid sleepy child
if (mode.GetMode() & ModeTlv::kModeRxOnWhenIdle)
{
tlvs[tlvslength++] = Tlv::kStatus;
SendChildUpdateResponse(NULL, aMessageInfo, tlvs, tlvslength, NULL);
}
ExitNow();
}
child->mMode = mode.GetMode();
tlvs[tlvslength++] = Tlv::kMode;
tlvs[tlvslength++] = Tlv::kLeaderData;
// Challenge
if (Tlv::GetTlv(aMessage, Tlv::kChallenge, sizeof(challenge), challenge) == kThreadError_None)
{