wifi: Add a method to reset the backoff of all ACs

src/wifi/model/channel-access-manager.cc

@@ -995,6 +995,18 @@ ChannelAccessManager::ResetBackoff(Ptr<Txop> txop)
     txop->GetLink(m_linkId).access = Txop::NOT_REQUESTED;
 }
 
+void
+ChannelAccessManager::ResetAllBackoffs()
+{
+    NS_LOG_FUNCTION(this);
+
+    for (const auto& txop : m_txops)
+    {
+        ResetBackoff(txop);
+    }
+    m_accessTimeout.Cancel();
+}
+
 void
 ChannelAccessManager::NotifySleepNow()
 {

src/wifi/model/channel-access-manager.h

@@ -329,6 +329,11 @@ class ChannelAccessManager : public Object
      */
     void ResetBackoff(Ptr<Txop> txop);
 
+    /**
+     * Reset the backoff for all the DCF/EDCAF. Additionally, cancel the access timeout event.
+     */
+    void ResetAllBackoffs();
+
     /**
      * Notify that the given PHY is about to switch to the given operating channel, which is
      * used by the given link. This notification is sent by the EMLSR Manager when a PHY object