Make vRouter components into separate apps.
This allows us to leverage the ONOS app subsystem for selecting which
components to load.
CORD-710
Change-Id: Ibd7c4c1afd2caa137b44c085e7b6b5b4a1082521
diff --git a/apps/routing/fpm/src/main/java/org/onosproject/routing/fpm/protocol/Netlink.java b/apps/routing/fpm/src/main/java/org/onosproject/routing/fpm/protocol/Netlink.java
new file mode 100644
index 0000000..79c23ab
--- /dev/null
+++ b/apps/routing/fpm/src/main/java/org/onosproject/routing/fpm/protocol/Netlink.java
@@ -0,0 +1,171 @@
+/*
+ * Copyright 2017-present Open Networking Laboratory
+ *
+ * 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.routing.fpm.protocol;
+
+import com.google.common.base.MoreObjects;
+import org.onlab.packet.DeserializationException;
+
+import java.nio.ByteBuffer;
+
+import static org.onlab.packet.PacketUtils.checkInput;
+
+/**
+ * Netlink header.
+ * <p>
+ * Taken from struct nlmsghdr in linux/netlink.h
+ * </p>
+ */
+public final class Netlink {
+
+ public static final int NETLINK_HEADER_LENGTH = 16;
+
+ private final long length;
+ private final NetlinkMessageType type;
+ private final int flags;
+ private final long sequence;
+ private final long processPortId;
+
+ private final RtNetlink rtNetlink;
+
+ /**
+ * Class constructor.
+ *
+ * @param length message length
+ * @param type type
+ * @param flags flags
+ * @param sequence sequence number
+ * @param processPortId port ID
+ * @param rtNetlink netlink routing message
+ */
+ private Netlink(long length, NetlinkMessageType type, int flags, long sequence,
+ long processPortId, RtNetlink rtNetlink) {
+ this.length = length;
+ this.type = type;
+ this.flags = flags;
+ this.sequence = sequence;
+ this.processPortId = processPortId;
+ this.rtNetlink = rtNetlink;
+ }
+
+ /**
+ * Returns the message length.
+ *
+ * @return length
+ */
+ public long length() {
+ return length;
+ }
+
+ /**
+ * Returns the message type.
+ *
+ * @return message type
+ */
+ public NetlinkMessageType type() {
+ return type;
+ }
+
+ /**
+ * Returns the flags.
+ *
+ * @return flags
+ */
+ public int flags() {
+ return flags;
+ }
+
+ /**
+ * Returns the sequence number.
+ *
+ * @return sequence number
+ */
+ public long sequence() {
+ return sequence;
+ }
+
+ /**
+ * Returns the port ID.
+ *
+ * @return port ID
+ */
+ public long processPortId() {
+ return processPortId;
+ }
+
+ /**
+ * Returns the netlink routing message.
+ *
+ * @return netlink routing message
+ */
+ public RtNetlink rtNetlink() {
+ return rtNetlink;
+ }
+
+ @Override
+ public String toString() {
+ return MoreObjects.toStringHelper(getClass())
+ .add("length", length)
+ .add("type", type)
+ .add("flags", flags)
+ .add("sequence", sequence)
+ .add("processPortId", processPortId)
+ .add("rtNetlink", rtNetlink)
+ .toString();
+ }
+
+ /**
+ * Decodes a netlink header from an input buffer.
+ *
+ * @param buffer input buffer
+ * @param start starting position the netlink header
+ * @param length length of the message
+ * @return netlink header
+ * @throws DeserializationException if a netlink header could not be
+ * decoded from the input buffer
+ */
+ public static Netlink decode(byte[] buffer, int start, int length) throws
+ DeserializationException {
+ checkInput(buffer, start, length, NETLINK_HEADER_LENGTH);
+
+ ByteBuffer bb = ByteBuffer.wrap(buffer, start, length);
+
+ long messageLength = Integer.reverseBytes(bb.getInt());
+ int type = Short.reverseBytes(bb.getShort());
+ int flags = Short.reverseBytes(bb.getShort());
+ long sequence = Integer.reverseBytes(bb.getInt());
+ long processPortId = Integer.reverseBytes(bb.getInt());
+
+ NetlinkMessageType messageType = NetlinkMessageType.get(type);
+ if (messageType == null) {
+ throw new DeserializationException(
+ "Unsupported Netlink message type: " + type);
+ }
+
+ // Netlink messages from Quagga's FPM protocol are always in the
+ // netlink route family (family 0).
+ RtNetlink rtNetlink = RtNetlink.decode(buffer, bb.position(),
+ bb.limit() - bb.position());
+
+ return new Netlink(messageLength,
+ messageType,
+ flags,
+ sequence,
+ processPortId,
+ rtNetlink);
+ }
+
+}