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wifi: No PHY may be operating on an EMLSR link when watchdog expires

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This commit is contained in:
Stefano Avallone
2023-09-11 15:54:06 +02:00
parent 0d39d4643e
commit 03e241866f
1 changed files with 5 additions and 4 deletions
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9
src/wifi/model/sta-wifi-mac.cc
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@@ -846,13 +846,14 @@ StaWifiMac::MissedBeacons()
return;
}
NS_LOG_DEBUG("beacon missed");
// We need to switch to the UNASSOCIATED state. However, if we are receiving
// a frame, wait until the RX is completed (otherwise, crashes may occur if
// we are receiving a MU frame because its reception requires the STA-ID)
// We need to switch to the UNASSOCIATED state. However, if we are receiving a frame, wait
// until the RX is completed (otherwise, crashes may occur if we are receiving a MU frame
// because its reception requires the STA-ID). We need to check that a PHY is operating on
// the given link, because this may (temporarily) not be the case for EMLSR clients.
Time delay = Seconds(0);
for (const auto& [id, link] : GetLinks())
{
if (link->phy->IsStateRx())
if (link->phy && link->phy->IsStateRx())
{
delay = std::max(delay, link->phy->GetDelayUntilIdle());
}