Packet throttle support
Change-Id: I6f2da5ed25f794561349013bfcbf9afa85d5e190
diff --git a/core/api/src/main/java/org/onosproject/net/packet/packetfilter/DhcpPacketClassifier.java b/core/api/src/main/java/org/onosproject/net/packet/packetfilter/DhcpPacketClassifier.java
new file mode 100644
index 0000000..1389c8c
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/packet/packetfilter/DhcpPacketClassifier.java
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2019-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.net.packet.packetfilter;
+
+import org.onlab.packet.DHCP;
+import org.onlab.packet.Ethernet;
+import org.onlab.packet.IPv4;
+import org.onlab.packet.UDP;
+import org.onosproject.net.packet.PacketContext;
+import org.onosproject.net.packet.PacketInClassifier;
+
+public class DhcpPacketClassifier implements PacketInClassifier {
+
+ @Override
+ public boolean match(PacketContext packet) {
+
+ Ethernet eth = packet.inPacket().parsed();
+
+ if (eth.getEtherType() == Ethernet.TYPE_IPV4) {
+ IPv4 ipv4Packet = (IPv4) eth.getPayload();
+
+ if (ipv4Packet.getProtocol() == IPv4.PROTOCOL_UDP) {
+ UDP udpPacket = (UDP) ipv4Packet.getPayload();
+
+ if (udpPacket.getDestinationPort() == UDP.DHCP_SERVER_PORT &&
+ udpPacket.getSourcePort() == UDP.DHCP_CLIENT_PORT) {
+ DHCP dhcp = (DHCP) udpPacket.getPayload();
+ if (dhcp.getPacketType() == DHCP.MsgType.DHCPDISCOVER) {
+ return true;
+ }
+ }
+ }
+ }
+ return false;
+ }
+
+
+}