[VOL-1349] EPON OLT adapter (package B)

Change-Id: I634ef62c53813dcf4456f54948f13e06358e263c
diff --git a/internal/pkg/core/l2oam/msg_set_hbtx_template.go b/internal/pkg/core/l2oam/msg_set_hbtx_template.go
new file mode 100644
index 0000000..f319e52
--- /dev/null
+++ b/internal/pkg/core/l2oam/msg_set_hbtx_template.go
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2020-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 l2oam
+
+import (
+	"github.com/google/gopacket"
+)
+
+//GenerateSetHbtxTemplate generates "OAM/HBTx Template" message
+func GenerateSetHbtxTemplate() gopacket.SerializableLayer {
+
+	tibitData := &TOAMSetRequest{
+		// IEEE 1904.2
+		Opcode: 0x03,
+		// OAM Protocol
+		Flags:      0x0050,
+		OAMPDUCode: 0xfe,
+		OUId:       []byte{0x2a, 0xea, 0x15},
+		// TiBit OLT Management Interface
+		TOMIOpcode: 0x03,
+		// Correlation Tag
+		CTBranch:   0x0c,
+		CTType:     0x0c7a,
+		CTLength:   4,
+		CTInstance: getOltInstance(),
+		// Object Context
+		OCBranch:   0x0c,
+		OCType:     0x0007,
+		OCLength:   4,
+		OCInstance: 0x00000000,
+		// Vc
+		VcBranch: 0x0a,
+		VcLeaf:   0x0003,
+		VcLength: 35,
+		// EC
+		ECLength: 34,
+		ECValue: []byte{
+			0x01, 0x80, 0xc2, 0x00, 0x00, 0x02, 0xe8, 0xb4,
+			0x70, 0x70, 0x04, 0x07, 0x88, 0x09, 0x03, 0x00,
+			0x50, 0x00, 0x01, 0x10, 0x01, 0x00, 0x00, 0x00,
+			0x1b, 0x04, 0xb0, 0x2a, 0xea, 0x15, 0x00, 0x00,
+			0x00, 0x23},
+		// End
+		EndBranch: 0x00,
+	}
+
+	return tibitData
+}