wifi: Add a method to get the max supported BA buffer size based on supported standard

src/wifi/model/wifi-mac.cc

@@ -1831,6 +1831,21 @@ WifiMac::GetEhtSupported(const Mac48Address& address) const
     return false;
 }
 
+uint16_t
+WifiMac::GetMaxBaBufferSize(std::optional<Mac48Address> address) const
+{
+    if (address ? GetEhtSupported(*address) : GetEhtSupported())
+    {
+        return 1024;
+    }
+    if (address ? GetHeSupported(*address) : GetHeSupported())
+    {
+        return 256;
+    }
+    NS_ASSERT(address ? GetHtSupported(*address) : GetHtSupported());
+    return 64;
+}
+
 void
 WifiMac::SetVoBlockAckThreshold(uint8_t threshold)
 {

src/wifi/model/wifi-mac.h

@@ -685,6 +685,15 @@ class WifiMac : public Object
      */
     BlockAckReqType GetBarTypeAsRecipient(Mac48Address originator, uint8_t tid) const;
 
+    /**
+     * Get the maximum Block Ack buffer size (in number of MPDUs) supported by the given device,
+     * if any, or by this device, otherwise, based on the supported standard.
+     *
+     * \param address the (MLD or link) address of the given device
+     * \return the maximum supported Block Ack buffer size (in number of MPDUs)
+     */
+    uint16_t GetMaxBaBufferSize(std::optional<Mac48Address> address = std::nullopt) const;
+
     /**
      * Get the TID-to-Link Mapping negotiated with the given MLD (if any) for the given direction.
      * An empty mapping indicates the default mapping.