EthernetProtocolHeader for LinuxSLL and Ethernet

Author: hevav

src/main/java/net/elytrium/pcap/layer/Ethernet.java

@@ -24,7 +24,7 @@
 import net.elytrium.pcap.layer.exception.LayerDecodeException;
 import net.elytrium.pcap.layer.exception.LayerEncodeException;
 
-public class Ethernet implements Layer {
+public class Ethernet implements EthernetProtocolHeader {
 
   private static final int SIZE = 14;
 
@@ -83,10 +83,12 @@ public void setSrcAddress(byte[] srcAddress) {
     this.srcAddress = srcAddress;
   }
 
+  @Override
   public EthernetProtocol getProtocol() {
     return this.protocol;
   }
 
+  @Override
   public void setProtocol(EthernetProtocol protocol) {
     this.protocol = protocol;
   }

src/main/java/net/elytrium/pcap/layer/EthernetProtocolHeader.java

@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2022 Elytrium
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package net.elytrium.pcap.layer;
+
+import net.elytrium.pcap.layer.data.EthernetProtocol;
+
+public interface EthernetProtocolHeader extends Layer {
+
+  EthernetProtocol getProtocol();
+
+  void setProtocol(EthernetProtocol protocol);
+}

src/main/java/net/elytrium/pcap/layer/LinuxSLL.java

@@ -24,7 +24,7 @@
 import net.elytrium.pcap.layer.exception.LayerDecodeException;
 import net.elytrium.pcap.layer.exception.LayerEncodeException;
 
-public class LinuxSLL implements Layer {
+public class LinuxSLL implements EthernetProtocolHeader {
 
   private static final int SIZE = 16;
 
@@ -114,10 +114,12 @@ public void setAddress(byte[] address) {
     this.address = address;
   }
 
+  @Override
   public EthernetProtocol getProtocol() {
     return this.protocol;
   }
 
+  @Override
   public void setProtocol(EthernetProtocol protocol) {
     this.protocol = protocol;
   }