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wifi: Do not schedule EMLSR switching to listening if delay is zero

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This commit is contained in:
Stefano Avallone
2023-06-27 18:50:41 +02:00
committed by Stefano Avallone
parent df7e98c5c6
commit 2dacfedaa5
1 changed files with 29 additions and 24 deletions
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53
src/wifi/model/eht/eht-frame-exchange-manager.cc
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@@ -297,36 +297,41 @@ EhtFrameExchangeManager::EmlsrSwitchToListening(const Mac48Address& address, con
auto emlCapabilities = GetWifiRemoteStationManager()->GetStationEmlCapabilities(address);
NS_ASSERT(emlCapabilities);
std::set<uint8_t> linkIds;
for (uint8_t linkId = 0; linkId < m_mac->GetNLinks(); linkId++)
{
if (m_mac->GetWifiRemoteStationManager(linkId)->GetEmlsrEnabled(*mldAddress))
{
Simulator::Schedule(delay, [=, this]() {
if (linkId != m_linkId)
{
// the reason for blocking the other EMLSR links has changed now
m_mac->UnblockUnicastTxOnLinks(WifiQueueBlockedReason::USING_OTHER_EMLSR_LINK,
*mldAddress,
{linkId});
}
// block DL transmissions on this link until transition delay elapses
m_mac->BlockUnicastTxOnLinks(WifiQueueBlockedReason::WAITING_EMLSR_TRANSITION_DELAY,
*mldAddress,
{linkId});
});
// unblock all EMLSR links when the transition delay elapses
Simulator::Schedule(delay + CommonInfoBasicMle::DecodeEmlsrTransitionDelay(
emlCapabilities->get().emlsrTransitionDelay),
[=, this]() {
m_mac->UnblockUnicastTxOnLinks(
WifiQueueBlockedReason::WAITING_EMLSR_TRANSITION_DELAY,
*mldAddress,
{linkId});
});
linkIds.insert(linkId);
}
}
auto blockLinks = [=, this]() {
// the reason for blocking the other EMLSR links has changed now
m_mac->UnblockUnicastTxOnLinks(WifiQueueBlockedReason::USING_OTHER_EMLSR_LINK,
*mldAddress,
linkIds);
// block DL transmissions on this link until transition delay elapses
m_mac->BlockUnicastTxOnLinks(WifiQueueBlockedReason::WAITING_EMLSR_TRANSITION_DELAY,
*mldAddress,
linkIds);
};
delay.IsZero() ? blockLinks() : static_cast<void>(Simulator::Schedule(delay, blockLinks));
// unblock all EMLSR links when the transition delay elapses
auto unblockLinks = [=, this]() {
m_mac->UnblockUnicastTxOnLinks(WifiQueueBlockedReason::WAITING_EMLSR_TRANSITION_DELAY,
*mldAddress,
linkIds);
};
auto endDelay = delay + CommonInfoBasicMle::DecodeEmlsrTransitionDelay(
emlCapabilities->get().emlsrTransitionDelay);
endDelay.IsZero() ? unblockLinks()
: static_cast<void>(Simulator::Schedule(endDelay, unblockLinks));
}
void