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ipsec_vppcalls.go
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ipsec_vppcalls.go
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// Copyright (c) 2018 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.
package vppcalls
import (
"errors"
govppapi "go.fd.io/govpp/api"
"go.ligato.io/cn-infra/v2/logging"
"go.ligato.io/vpp-agent/v3/plugins/vpp"
"go.ligato.io/vpp-agent/v3/plugins/vpp/ifplugin/ifaceidx"
ipsec "go.ligato.io/vpp-agent/v3/proto/ligato/vpp/ipsec"
)
var (
// ErrTunnelProtectionUnsupported error is returned if IPSec tunnel protection is not supported on given VPP version.
ErrTunnelProtectionUnsupported = errors.New("IPSec tunnel protection is not supported")
)
// IPSecSaDetails holds security association with VPP metadata
type IPSecSaDetails struct {
Sa *ipsec.SecurityAssociation
Meta *IPSecSaMeta
}
// IPSecSaMeta contains all VPP-specific metadata
type IPSecSaMeta struct {
SaID uint32
Interface string
IfIdx uint32
CryptoKeyLen uint8
IntegKeyLen uint8
Salt uint32 // not used for VPP >= 22.10
SeqOutbound uint64
LastSeqInbound uint64
ReplayWindow uint64
TotalDataSize uint64
}
// IPSecVppAPI provides methods for creating and managing of a IPsec configuration
type IPSecVppAPI interface {
IPSecVPPRead
// AddSPD adds SPD to VPP via binary API
AddSPD(spdID uint32) error
// DeleteSPD deletes SPD from VPP via binary API
DeleteSPD(spdID uint32) error
// AddSPDInterface adds SPD interface assignment to VPP via binary API
AddSPDInterface(spdID uint32, iface *ipsec.SecurityPolicyDatabase_Interface) error
// DeleteSPDInterface deletes SPD interface assignment from VPP via binary API
DeleteSPDInterface(spdID uint32, iface *ipsec.SecurityPolicyDatabase_Interface) error
// AddSP adds security policy to VPP via binary API
AddSP(sp *ipsec.SecurityPolicy) error
// DeleteSP deletes security policy from VPP via binary API
DeleteSP(sp *ipsec.SecurityPolicy) error
// AddSA adds SA to VPP via binary API
AddSA(sa *ipsec.SecurityAssociation) error
// DeleteSA deletes SA from VPP via binary API
DeleteSA(sa *ipsec.SecurityAssociation) error
// AddTunnelProtection adds a tunnel protection to VPP via binary API
AddTunnelProtection(tp *ipsec.TunnelProtection) error
// UpdateTunnelProtection updates a tunnel protection on VPP via binary API
UpdateTunnelProtection(tp *ipsec.TunnelProtection) error
// DeleteTunnelProtection deletes a tunnel protection from VPP via binary API
DeleteTunnelProtection(tp *ipsec.TunnelProtection) error
}
// IPSecVPPRead provides read methods for IPSec
type IPSecVPPRead interface {
// DumpIPSecSPD returns a list of IPSec security policy databases
DumpIPSecSPD() (spdList []*ipsec.SecurityPolicyDatabase, err error)
// DumpIPSecSP returns a list of configured security policies
DumpIPSecSP() (spList []*ipsec.SecurityPolicy, err error)
// DumpIPSecSA returns a list of configured security associations
DumpIPSecSA() (saList []*IPSecSaDetails, err error)
// DumpIPSecSAWithIndex returns a security association with provided index
DumpIPSecSAWithIndex(saID uint32) (saList []*IPSecSaDetails, err error)
// DumpTunnelProtections returns configured IPSec tunnel protections
DumpTunnelProtections() (tpList []*ipsec.TunnelProtection, err error)
}
var Handler = vpp.RegisterHandler(vpp.HandlerDesc{
Name: "ipsec",
HandlerAPI: (*IPSecVppAPI)(nil),
})
type NewHandlerFunc func(ch govppapi.Channel, ifDdx ifaceidx.IfaceMetadataIndex, log logging.Logger) IPSecVppAPI
func AddHandlerVersion(version vpp.Version, msgs []govppapi.Message, h NewHandlerFunc) {
Handler.AddVersion(vpp.HandlerVersion{
Version: version,
Check: func(c vpp.Client) error {
ch, err := c.NewAPIChannel()
if err != nil {
return err
}
return ch.CheckCompatiblity(msgs...)
},
NewHandler: func(c vpp.Client, a ...interface{}) vpp.HandlerAPI {
ch, err := c.NewAPIChannel()
if err != nil {
return err
}
return h(ch, a[0].(ifaceidx.IfaceMetadataIndex), a[1].(logging.Logger))
},
})
}
func CompatibleIPSecVppHandler(c vpp.Client, ifIdx ifaceidx.IfaceMetadataIndex, log logging.Logger) IPSecVppAPI {
if v := Handler.FindCompatibleVersion(c); v != nil {
return v.NewHandler(c, ifIdx, log).(IPSecVppAPI)
}
return nil
}