go.ligato.io/vpp-agent/v3@v3.5.0/plugins/vpp/ifplugin/vppcalls/vpp2202/vxlan_gpe_vppcalls.go (about)

     1  //  Copyright (c) 2022 Cisco and/or its affiliates.
     2  //
     3  //  Licensed under the Apache License, Version 2.0 (the "License");
     4  //  you may not use this file except in compliance with the License.
     5  //  You may obtain a copy of the License at:
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  //  Unless required by applicable law or agreed to in writing, software
    10  //  distributed under the License is distributed on an "AS IS" BASIS,
    11  //  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  //  See the License for the specific language governing permissions and
    13  //  limitations under the License.
    14  
    15  package vpp2202
    16  
    17  import (
    18  	"fmt"
    19  	"net"
    20  
    21  	"go.ligato.io/vpp-agent/v3/plugins/vpp/binapi/vpp2202/interface_types"
    22  	"go.ligato.io/vpp-agent/v3/plugins/vpp/binapi/vpp2202/ip_types"
    23  	vpp_gpe "go.ligato.io/vpp-agent/v3/plugins/vpp/binapi/vpp2202/vxlan_gpe"
    24  	ifs "go.ligato.io/vpp-agent/v3/proto/ligato/vpp/interfaces"
    25  )
    26  
    27  func (h *InterfaceVppHandler) vxLanGpeAddDelTunnel(isAdd bool, vxLan *ifs.VxlanLink, vrf, multicastIf uint32) (uint32, error) {
    28  	req := &vpp_gpe.VxlanGpeAddDelTunnel{
    29  		McastSwIfIndex: interface_types.InterfaceIndex(multicastIf),
    30  		EncapVrfID:     vrf,
    31  		DecapVrfID:     vxLan.Gpe.DecapVrfId,
    32  		Protocol:       ip_types.IPProto(vxLan.Gpe.Protocol),
    33  		Vni:            vxLan.Vni,
    34  		IsAdd:          isAdd,
    35  	}
    36  
    37  	if vxLan.SrcAddress == vxLan.DstAddress {
    38  		return 0, fmt.Errorf("source and destination addresses must not be the same")
    39  	}
    40  	srcAddr := net.ParseIP(vxLan.SrcAddress).To4()
    41  	dstAddr := net.ParseIP(vxLan.DstAddress).To4()
    42  	if srcAddr == nil && dstAddr == nil {
    43  		srcAddr = net.ParseIP(vxLan.SrcAddress).To16()
    44  		dstAddr = net.ParseIP(vxLan.DstAddress).To16()
    45  		if srcAddr == nil || dstAddr == nil {
    46  			return 0, fmt.Errorf("invalid VXLAN address, src: %s, dst: %s", srcAddr, dstAddr)
    47  		}
    48  	} else if srcAddr == nil && dstAddr != nil || srcAddr != nil && dstAddr == nil {
    49  		return 0, fmt.Errorf("IP version mismatch for VXLAN destination and source IP addresses")
    50  	}
    51  
    52  	req.Local, _ = IPToAddress(srcAddr.String())
    53  	req.Remote, _ = IPToAddress(dstAddr.String())
    54  
    55  	reply := &vpp_gpe.VxlanGpeAddDelTunnelReply{}
    56  
    57  	if err := h.callsChannel.SendRequest(req).ReceiveReply(reply); err != nil {
    58  		return 0, err
    59  	}
    60  	return uint32(reply.SwIfIndex), nil
    61  }
    62  
    63  // AddVxLanGpeTunnel adds new VxLAN-GPE interface.
    64  func (h *InterfaceVppHandler) AddVxLanGpeTunnel(ifName string, vrf, multicastIf uint32, vxLan *ifs.VxlanLink) (uint32, error) {
    65  	swIfIndex, err := h.vxLanGpeAddDelTunnel(true, vxLan, vrf, multicastIf)
    66  	if err != nil {
    67  		return 0, err
    68  	}
    69  	return swIfIndex, h.SetInterfaceTag(ifName, swIfIndex)
    70  }
    71  
    72  // DeleteVxLanGpeTunnel removes VxLAN-GPE interface.
    73  func (h *InterfaceVppHandler) DeleteVxLanGpeTunnel(ifName string, vxLan *ifs.VxlanLink) error {
    74  	swIfIndex, err := h.vxLanGpeAddDelTunnel(false, vxLan, 0, 0)
    75  	if err != nil {
    76  		return err
    77  	}
    78  	return h.RemoveInterfaceTag(ifName, swIfIndex)
    79  }