[ONOS-4424] Tag LLDP/BDDP source address with fingerprint
Link probes incorporate cluster fingerprint in source
MAC address. This removes the need for an additional TLV and the
complexity associated with it, and also adds fingerprinting to
BDDPs for free.
- fingerprint in Ethernet source address. The old default MAC
value is only used when the CusterMetadata service isn't ready.
- remove support for TLV fingerprint field and associated config
knobs.
- links at control domain boundary are classified as EDGE type links.
Change-Id: Idb07dd06fbeee25e9fcee3fbdddec7a7dbb2c397
diff --git a/core/api/src/main/java/org/onosproject/net/link/ProbedLinkProvider.java b/core/api/src/main/java/org/onosproject/net/link/ProbedLinkProvider.java
new file mode 100644
index 0000000..6a04f83
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/link/ProbedLinkProvider.java
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2014-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.net.link;
+
+import com.google.common.hash.HashFunction;
+import com.google.common.hash.HashCode;
+import com.google.common.hash.Hashing;
+
+import org.onosproject.cluster.ClusterMetadata;
+
+/**
+ * Abstraction for an entity that provides information about infrastructure
+ * links that are discovered or verified using probe messages.
+ */
+public interface ProbedLinkProvider extends LinkProvider {
+
+ static final String DEFAULT_MAC = "DE:AD:BE:EF:BA:11";
+
+ static String defaultMac() {
+ return DEFAULT_MAC;
+ }
+
+ /**
+ * Build a stringified MAC address using the ClusterMetadata hash for uniqueness.
+ * Form of MAC is "02:eb" followed by four bytes of clusterMetadata hash.
+ */
+ static String fingerprintMac(ClusterMetadata cm) {
+ if (cm == null) {
+ return DEFAULT_MAC;
+ }
+
+ HashFunction hf = Hashing.murmur3_32();
+ HashCode hc = hf.newHasher().putObject(cm, ClusterMetadata.HASH_FUNNEL).hash();
+ int unqf = hc.asInt();
+
+ StringBuilder sb = new StringBuilder();
+ sb.append("02:eb");
+ for (int i = 0; i < 4; i++) {
+ byte b = (byte) (unqf >> i * 8);
+ sb.append(String.format(":%02X", b));
+ }
+ return sb.toString();
+ }
+}