wifi: Add Capability Information EHT subfields

src/wifi/model/capability-information.cc

@@ -54,6 +54,15 @@ CapabilityInformation::SetCfPollable()
     Set(2);
 }
 
+void
+CapabilityInformation::SetCriticalUpdate(bool flag)
+{
+    if (flag)
+    {
+        Set(6);
+    }
+}
+
 bool
 CapabilityInformation::IsEss() const
 {
@@ -84,6 +93,12 @@ CapabilityInformation::IsCfPollable() const
     return Is(2);
 }
 
+bool
+CapabilityInformation::IsCriticalUpdate() const
+{
+    return Is(6);
+}
+
 void
 CapabilityInformation::Set(uint8_t n)
 {

src/wifi/model/capability-information.h

@@ -56,6 +56,12 @@ class CapabilityInformation
      */
     void SetCfPollable();
 
+    /**
+     * Set Critical Update flag (see IEEE 802.11be D5.0 9.4.1.4)
+     * @param flag critical update bit
+     */
+    void SetCriticalUpdate(bool flag);
+
     /**
      * Check if the Extended Service Set (ESS) bit
      * in the capability information field is set to 1.
@@ -97,6 +103,13 @@ class CapabilityInformation
      */
     bool IsCfPollable() const;
 
+    /**
+     * Check if Critical Update bit is set to 1
+     *
+     * @return true if set to 1, false otherwise
+     */
+    bool IsCriticalUpdate() const;
+
     /**
      * Return the serialized size of capability
      * information.