1 files changed, 53 insertions, 0 deletions
diff --git a/internal/pkg/table/vrf.go b/internal/pkg/table/vrf.go
new file mode 100644
index 00000000..053f85ce
--- /dev/null
+++ b/internal/pkg/table/vrf.go
@@ -0,0 +1,53 @@
+// Copyright (C) 2014-2016 Nippon Telegraph and Telephone Corporation.
+//
+// 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 table
+
+import (
+	"github.com/osrg/gobgp/pkg/packet/bgp"
+)
+
+type Vrf struct {
+	Name     string
+	Id       uint32
+	Rd       bgp.RouteDistinguisherInterface
+	ImportRt []bgp.ExtendedCommunityInterface
+	ExportRt []bgp.ExtendedCommunityInterface
+}
+
+func (v *Vrf) Clone() *Vrf {
+	f := func(rt []bgp.ExtendedCommunityInterface) []bgp.ExtendedCommunityInterface {
+		l := make([]bgp.ExtendedCommunityInterface, 0, len(rt))
+		return append(l, rt...)
+	}
+	return &Vrf{
+		Name:     v.Name,
+		Id:       v.Id,
+		Rd:       v.Rd,
+		ImportRt: f(v.ImportRt),
+		ExportRt: f(v.ExportRt),
+	}
+}
+
+func isLastTargetUser(vrfs map[string]*Vrf, target bgp.ExtendedCommunityInterface) bool {
+	for _, vrf := range vrfs {
+		for _, rt := range vrf.ImportRt {
+			if target.String() == rt.String() {
+				return false
+			}
+		}
+	}
+	return true
+}