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// 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 (
"fmt"
"github.com/osrg/gobgp/packet/bgp"
)
type Vrf struct {
Name string
Rd bgp.RouteDistinguisherInterface
ImportRt []bgp.ExtendedCommunityInterface
ExportRt []bgp.ExtendedCommunityInterface
LabelMap map[string]uint32
}
func (v *Vrf) ToGlobalPath(path *Path, label uint32) error {
nlri := path.GetNlri()
switch rf := path.GetRouteFamily(); rf {
case bgp.RF_IPv4_UC:
n := nlri.(*bgp.IPAddrPrefix)
path.OriginInfo().nlri = bgp.NewLabeledVPNIPAddrPrefix(n.Length, n.Prefix.String(), *bgp.NewMPLSLabelStack(label), v.Rd)
case bgp.RF_IPv6_UC:
n := nlri.(*bgp.IPv6AddrPrefix)
path.OriginInfo().nlri = bgp.NewLabeledVPNIPv6AddrPrefix(n.Length, n.Prefix.String(), *bgp.NewMPLSLabelStack(label), v.Rd)
case bgp.RF_EVPN:
n := nlri.(*bgp.EVPNNLRI)
switch n.RouteType {
case bgp.EVPN_ROUTE_TYPE_MAC_IP_ADVERTISEMENT:
n.RouteTypeData.(*bgp.EVPNMacIPAdvertisementRoute).RD = v.Rd
case bgp.EVPN_INCLUSIVE_MULTICAST_ETHERNET_TAG:
n.RouteTypeData.(*bgp.EVPNMulticastEthernetTagRoute).RD = v.Rd
}
default:
return fmt.Errorf("unsupported route family for vrf: %s", rf)
}
path.SetExtCommunities(v.ExportRt, false)
return nil
}
func (v *Vrf) Clone() *Vrf {
f := func(rt []bgp.ExtendedCommunityInterface) []bgp.ExtendedCommunityInterface {
l := make([]bgp.ExtendedCommunityInterface, 0, len(rt))
for _, v := range rt {
l = append(l, v)
}
return l
}
return &Vrf{
Name: v.Name,
Rd: v.Rd,
ImportRt: f(v.ImportRt),
ExportRt: f(v.ExportRt),
LabelMap: func() map[string]uint32 {
m := make(map[string]uint32)
for k, v := range v.LabelMap {
m[k] = v
}
return m
}(),
}
}
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
}
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