void ChildSupervisor::SendMessage(Child &aChild)
{
Message *message = NULL;
uint8_t childIndex;
VerifyOrExit(aChild.GetIndirectMessageCount() == 0);
message = Get<MessagePool>().New(Message::kTypeSupervision, sizeof(uint8_t));
VerifyOrExit(message != NULL);
// Supervision message is an empty payload 15.4 data frame.
// The child index is stored here in the message content to allow
// the destination of the message to be later retrieved using
// `ChildSupervisor::GetDestination(message)`.
childIndex = Get<ChildTable>().GetChildIndex(aChild);
SuccessOrExit(message->Append(&childIndex, sizeof(childIndex)));
SuccessOrExit(Get<ThreadNetif>().SendMessage(*message));
message = NULL;
otLogInfoUtil("Sending supervision message to child 0x%04x", aChild.GetRloc16());
exit:
if (message != NULL)
{
message->Free();
}
}
void ChildSupervisor::SendMessage(Child &aChild)
{
ThreadNetif &netif = GetNetif();
Message *message = NULL;
otError error = OT_ERROR_NONE;
uint8_t childIndex;
VerifyOrExit(aChild.GetIndirectMessageCount() == 0);
message = netif.GetInstance().mMessagePool.New(Message::kTypeSupervision, sizeof(uint8_t));
VerifyOrExit(message != NULL);
// Supervision message is an empty payload 15.4 data frame.
// The child index is stored here in the message content to allow
// the destination of the message to be later retrieved using
// `ChildSupervisor::GetDestination(message)`.
childIndex = netif.GetMle().GetChildIndex(aChild);
SuccessOrExit(error = message->Append(&childIndex, sizeof(childIndex)));
SuccessOrExit(error = netif.SendMessage(*message));
message = NULL;
otLogInfoMle(GetInstance(), "Sending supervision message to child 0x%04x", aChild.GetRloc16());
exit:
if (message != NULL)
{
message->Free();
}
}
void SourceMatchController::IncrementMessageCount(Child &aChild)
{
if (aChild.GetIndirectMessageCount() == 0)
{
AddEntry(aChild);
}
aChild.IncrementIndirectMessageCount();
}
void SourceMatchController::DecrementMessageCount(Child &aChild)
{
if (aChild.GetIndirectMessageCount() == 0)
{
otLogWarnMac(GetInstance(), "DecrementMessageCount(child 0x%04x) called when already at zero count.",
aChild.GetRloc16());
ExitNow();
}
aChild.DecrementIndirectMessageCount();
if (aChild.GetIndirectMessageCount() == 0)
{
ClearEntry(aChild);
}
exit:
return;
}
void SourceMatchController::SetSrcMatchAsShort(Child &aChild, bool aUseShortAddress)
{
VerifyOrExit(aChild.IsIndirectSourceMatchShort() != aUseShortAddress);
if (aChild.GetIndirectMessageCount() > 0)
{
ClearEntry(aChild);
aChild.SetIndirectSourceMatchShort(aUseShortAddress);
AddEntry(aChild);
}
else
{
aChild.SetIndirectSourceMatchShort(aUseShortAddress);
}
exit:
return;
}