go.ligato.io/vpp-agent/v3@v3.5.0/plugins/vpp/l3plugin/vppcalls/vpp2101/dhcpproxy_dump.go (about)

     1  // Copyright (c) 2019 PANTHEON.tech
     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 vpp2101
    16  
    17  import (
    18  	"net"
    19  
    20  	vpp_dhcp "go.ligato.io/vpp-agent/v3/plugins/vpp/binapi/vpp2101/dhcp"
    21  	"go.ligato.io/vpp-agent/v3/plugins/vpp/binapi/vpp2101/ip_types"
    22  	"go.ligato.io/vpp-agent/v3/plugins/vpp/l3plugin/vppcalls"
    23  	l3 "go.ligato.io/vpp-agent/v3/proto/ligato/vpp/l3"
    24  )
    25  
    26  func (h *DHCPProxyHandler) DumpDHCPProxy() (entry []*vppcalls.DHCPProxyDetails, err error) {
    27  	ipv4Entries, err := h.dumpDHCPProxyForIPVersion(false)
    28  	if err != nil {
    29  		return nil, err
    30  	}
    31  	entry = append(entry, ipv4Entries...)
    32  	ipv6Entries, err := h.dumpDHCPProxyForIPVersion(true)
    33  	if err != nil {
    34  		return nil, err
    35  	}
    36  
    37  	entry = append(entry, ipv6Entries...)
    38  	return entry, nil
    39  }
    40  
    41  func (h *DHCPProxyHandler) dumpDHCPProxyForIPVersion(isIPv6 bool) (entry []*vppcalls.DHCPProxyDetails, err error) {
    42  	reqCtx := h.callsChannel.SendMultiRequest(&vpp_dhcp.DHCPProxyDump{IsIP6: isIPv6})
    43  	for {
    44  		dhcpProxyDetails := &vpp_dhcp.DHCPProxyDetails{}
    45  		stop, err := reqCtx.ReceiveReply(dhcpProxyDetails)
    46  		if stop {
    47  			break
    48  		}
    49  		if err != nil {
    50  			h.log.Error(err)
    51  			return nil, err
    52  		}
    53  		proxy := &l3.DHCPProxy{
    54  			RxVrfId:         dhcpProxyDetails.RxVrfID,
    55  			SourceIpAddress: addressToString(dhcpProxyDetails.DHCPSrcAddress),
    56  		}
    57  
    58  		for _, server := range dhcpProxyDetails.Servers {
    59  			proxyServer := &l3.DHCPProxy_DHCPServer{
    60  				IpAddress: addressToString(server.DHCPServer),
    61  				VrfId:     server.ServerVrfID,
    62  			}
    63  			proxy.Servers = append(proxy.Servers, proxyServer)
    64  		}
    65  
    66  		entry = append(entry, &vppcalls.DHCPProxyDetails{
    67  			DHCPProxy: proxy,
    68  		})
    69  	}
    70  	return
    71  }
    72  
    73  func addressToString(address ip_types.Address) string {
    74  	if address.Af == ip_types.ADDRESS_IP6 {
    75  		ipAddr := address.Un.GetIP6()
    76  		return net.IP(ipAddr[:]).To16().String()
    77  	}
    78  	ipAddr := address.Un.GetIP4()
    79  	return net.IP(ipAddr[:]).To4().String()
    80  }