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[mle] revert request network data on child reattach after reboot (#2466) (#2486)

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This reverts commit 87d8940abf.

Adding Network Data to the MLE Child Update Response message increases the
message size beyond what can fit in a single IEEE 802.15.4 frame.  The
Thread specification requires all fragmented MLE message to have MAC
security enabled.
This commit is contained in:
Jonathan Hui
2018-01-18 00:24:02 +00:00
committed by GitHub
parent 5028d2f71b
commit c59da516ae
1 changed files with 2 additions and 6 deletions
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src/core/thread/mle.cpp
+2 -6
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@@ -1806,18 +1806,14 @@ otError Mle::SendChildUpdateRequest(void)
switch (mRole)
{
case OT_DEVICE_ROLE_DETACHED:
{
static const uint8_t tlvs[] = {Tlv::kNetworkData};
for (uint8_t i = 0; i < sizeof(mParentRequest.mChallenge); i++)
{
mParentRequest.mChallenge[i] = static_cast<uint8_t>(otPlatRandomGet());
}
SuccessOrExit(error = AppendChallenge(*message, mParentRequest.mChallenge, sizeof(mParentRequest.mChallenge)));
SuccessOrExit(error = AppendTlvRequest(*message, tlvs, sizeof(tlvs)));
SuccessOrExit(error = AppendChallenge(*message, mParentRequest.mChallenge,
sizeof(mParentRequest.mChallenge)));
break;
}
case OT_DEVICE_ROLE_CHILD:
SuccessOrExit(error = AppendSourceAddress(*message));