Packet throttle support
Change-Id: I6f2da5ed25f794561349013bfcbf9afa85d5e190
diff --git a/core/api/src/main/java/org/onosproject/net/packet/packetfilter/Dhcp6IndirectPacketClassifier.java b/core/api/src/main/java/org/onosproject/net/packet/packetfilter/Dhcp6IndirectPacketClassifier.java
new file mode 100644
index 0000000..afb2c31
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/packet/packetfilter/Dhcp6IndirectPacketClassifier.java
@@ -0,0 +1,67 @@
+/*
+ * 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.BasePacket;
+import org.onlab.packet.Ethernet;
+import org.onlab.packet.IPv6;
+import org.onlab.packet.Ip6Address;
+import org.onlab.packet.DHCP6;
+import org.onlab.packet.UDP;
+import org.onlab.packet.dhcp.Dhcp6RelayOption;
+import org.onosproject.net.packet.PacketContext;
+import org.onosproject.net.packet.PacketInClassifier;
+import org.slf4j.Logger;
+
+import java.util.Arrays;
+
+import static org.slf4j.LoggerFactory.getLogger;
+
+public class Dhcp6IndirectPacketClassifier implements PacketInClassifier {
+ private final Logger log = getLogger(getClass());
+
+ @Override
+ public boolean match(PacketContext packet) {
+
+ Ethernet eth = packet.inPacket().parsed();
+
+ if (eth.getEtherType() == Ethernet.TYPE_IPV6) {
+ IPv6 ipv6Packet = (IPv6) eth.getPayload();
+
+ if (ipv6Packet.getNextHeader() == IPv6.PROTOCOL_UDP) {
+ UDP udpPacket = (UDP) ipv6Packet.getPayload();
+ //Indirectly connected host
+ if (udpPacket.getDestinationPort() == UDP.DHCP_V6_SERVER_PORT &&
+ udpPacket.getSourcePort() == UDP.DHCP_V6_SERVER_PORT &&
+ Arrays.equals(ipv6Packet.getDestinationAddress(),
+ Ip6Address.valueOf("ff02::1:2").toOctets())) {
+ DHCP6 relayMessage = (DHCP6) udpPacket.getPayload();
+ DHCP6 dhcp6 = (DHCP6) relayMessage.getOptions().stream()
+ .filter(opt -> opt instanceof Dhcp6RelayOption)
+ .map(BasePacket::getPayload)
+ .map(pld -> (DHCP6) pld)
+ .findFirst()
+ .orElse(null);
+
+ if (dhcp6.getMsgType() == DHCP6.MsgType.SOLICIT.value()) {
+ return true;
+ }
+ }
+ }
+ }
+ return false;
+ }
+}