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natplugin.go
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natplugin.go
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// Copyright (c) 2021 Cisco and/or its affiliates.
//
// 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.
//go:generate descriptor-adapter --descriptor-name NAT44Global --value-type *vpp_nat.Nat44Global --import "go.ligato.io/vpp-agent/v3/proto/ligato/vpp/nat" --output-dir "descriptor"
//go:generate descriptor-adapter --descriptor-name NAT44GlobalInterface --value-type *vpp_nat.Nat44Global_Interface --import "go.ligato.io/vpp-agent/v3/proto/ligato/vpp/nat" --output-dir "descriptor"
//go:generate descriptor-adapter --descriptor-name NAT44GlobalAddress --value-type *vpp_nat.Nat44Global_Address --import "go.ligato.io/vpp-agent/v3/proto/ligato/vpp/nat" --output-dir "descriptor"
//go:generate descriptor-adapter --descriptor-name DNAT44 --value-type *vpp_nat.DNat44 --import "go.ligato.io/vpp-agent/v3/proto/ligato/vpp/nat" --output-dir "descriptor"
//go:generate descriptor-adapter --descriptor-name NAT44Interface --value-type *vpp_nat.Nat44Interface --import "go.ligato.io/vpp-agent/v3/proto/ligato/vpp/nat" --output-dir "descriptor"
//go:generate descriptor-adapter --descriptor-name NAT44AddressPool --value-type *vpp_nat.Nat44AddressPool --import "go.ligato.io/vpp-agent/v3/proto/ligato/vpp/nat" --output-dir "descriptor"
package natplugin
import (
"github.com/pkg/errors"
"go.ligato.io/cn-infra/v2/health/statuscheck"
"go.ligato.io/cn-infra/v2/infra"
"go.ligato.io/vpp-agent/v3/plugins/govppmux"
kvs "go.ligato.io/vpp-agent/v3/plugins/kvscheduler/api"
"go.ligato.io/vpp-agent/v3/plugins/vpp/ifplugin"
"go.ligato.io/vpp-agent/v3/plugins/vpp/natplugin/descriptor"
"go.ligato.io/vpp-agent/v3/plugins/vpp/natplugin/vppcalls"
_ "go.ligato.io/vpp-agent/v3/plugins/vpp/natplugin/vppcalls/vpp2101"
_ "go.ligato.io/vpp-agent/v3/plugins/vpp/natplugin/vppcalls/vpp2106"
_ "go.ligato.io/vpp-agent/v3/plugins/vpp/natplugin/vppcalls/vpp2202"
_ "go.ligato.io/vpp-agent/v3/plugins/vpp/natplugin/vppcalls/vpp2210"
)
// NATPlugin configures VPP NAT.
type NATPlugin struct {
Deps
// handlers
natHandler vppcalls.NatVppAPI
}
// Deps lists dependencies of the NAT plugin.
type Deps struct {
infra.PluginDeps
KVScheduler kvs.KVScheduler
VPP govppmux.API
IfPlugin ifplugin.API
StatusCheck statuscheck.PluginStatusWriter // optional
}
// Init registers NAT-related descriptors.
func (p *NATPlugin) Init() (err error) {
if !p.VPP.IsPluginLoaded("nat") {
p.Log.Warnf("VPP plugin NAT was disabled by VPP")
return nil
}
// init handlers
p.natHandler = vppcalls.CompatibleNatVppHandler(p.VPP, p.IfPlugin.GetInterfaceIndex(), p.IfPlugin.GetDHCPIndex(), p.Log)
if p.natHandler == nil {
return errors.New("natHandler is not available")
}
// init and register descriptors
nat44GlobalCtx, nat44GlobalDescriptor := descriptor.NewNAT44GlobalDescriptor(p.natHandler, p.Log)
nat44GlobalIfaceDescriptor := descriptor.NewNAT44GlobalInterfaceDescriptor(p.natHandler, p.Log)
nat44GlobalAddrDescriptor := descriptor.NewNAT44GlobalAddressDescriptor(p.natHandler, p.Log)
dnat44Descriptor := descriptor.NewDNAT44Descriptor(p.natHandler, p.Log)
nat44IfaceDescriptor := descriptor.NewNAT44InterfaceDescriptor(nat44GlobalCtx, p.natHandler, p.Log)
nat44AddrPoolDescriptor := descriptor.NewNAT44AddressPoolDescriptor(nat44GlobalCtx, p.natHandler, p.Log)
err = p.KVScheduler.RegisterKVDescriptor(
nat44GlobalDescriptor,
nat44GlobalIfaceDescriptor, // deprecated, kept for backward compatibility
nat44GlobalAddrDescriptor, // deprecated, kept for backward compatibility
dnat44Descriptor,
nat44IfaceDescriptor,
nat44AddrPoolDescriptor,
)
if err != nil {
return err
}
return nil
}
// AfterInit registers plugin with StatusCheck.
func (p *NATPlugin) AfterInit() error {
if p.StatusCheck != nil {
p.StatusCheck.Register(p.PluginName, nil)
}
return nil
}