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

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This commit adds a Network Data TLV request to the MLE Child Update Request
message when trying to resynchronize with a parent after reset.  This
eliminates the need for an MLE Data Request/Response exchange following the
MLE Child Update Request/Response exchange.
This commit is contained in:
Jonathan Hui
2018-01-12 01:04:55 +00:00
committed by GitHub
parent 1b4c82c5c5
commit 87d8940abf
1 changed files with 6 additions and 2 deletions
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src/core/thread/mle.cpp
+6 -2
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@@ -1807,14 +1807,18 @@ otError Mle::SendChildUpdateRequest(void)
switch (mRole) switch (mRole)
{ {
case OT_DEVICE_ROLE_DETACHED: case OT_DEVICE_ROLE_DETACHED:
{
static const uint8_t tlvs[] = {Tlv::kNetworkData};
for (uint8_t i = 0; i < sizeof(mParentRequest.mChallenge); i++) for (uint8_t i = 0; i < sizeof(mParentRequest.mChallenge); i++)
{ {
mParentRequest.mChallenge[i] = static_cast<uint8_t>(otPlatRandomGet()); mParentRequest.mChallenge[i] = static_cast<uint8_t>(otPlatRandomGet());
} }
SuccessOrExit(error = AppendChallenge(*message, mParentRequest.mChallenge, SuccessOrExit(error = AppendChallenge(*message, mParentRequest.mChallenge, sizeof(mParentRequest.mChallenge)));
sizeof(mParentRequest.mChallenge))); SuccessOrExit(error = AppendTlvRequest(*message, tlvs, sizeof(tlvs)));
break; break;
}
case OT_DEVICE_ROLE_CHILD: case OT_DEVICE_ROLE_CHILD:
SuccessOrExit(error = AppendSourceAddress(*message)); SuccessOrExit(error = AppendSourceAddress(*message));