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

     1  //  Copyright (c) 2019 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 vpp2101
    16  
    17  import (
    18  	"fmt"
    19  	"net"
    20  
    21  	govppapi "go.fd.io/govpp/api"
    22  	"go.ligato.io/cn-infra/v2/logging"
    23  
    24  	core_vppcalls "go.ligato.io/vpp-agent/v3/plugins/govppmux/vppcalls"
    25  	core_vpp2101 "go.ligato.io/vpp-agent/v3/plugins/govppmux/vppcalls/vpp2101"
    26  	"go.ligato.io/vpp-agent/v3/plugins/vpp"
    27  	vpp2101 "go.ligato.io/vpp-agent/v3/plugins/vpp/binapi/vpp2101"
    28  	"go.ligato.io/vpp-agent/v3/plugins/vpp/binapi/vpp2101/ip_types"
    29  	"go.ligato.io/vpp-agent/v3/plugins/vpp/binapi/vpp2101/sr"
    30  	"go.ligato.io/vpp-agent/v3/plugins/vpp/binapi/vpp2101/vpe"
    31  	"go.ligato.io/vpp-agent/v3/plugins/vpp/ifplugin/ifaceidx"
    32  	"go.ligato.io/vpp-agent/v3/plugins/vpp/srplugin/vppcalls"
    33  )
    34  
    35  func init() {
    36  	msgs := vpp.Messages(
    37  		sr.AllMessages,
    38  		vpe.AllMessages, // using also vpe -> need to have correct vpp version also for vpe
    39  	)
    40  	vppcalls.AddHandlerVersion(vpp2101.Version, msgs.AllMessages(), NewSRv6VppHandler)
    41  }
    42  
    43  // SRv6VppHandler is accessor for SRv6-related vppcalls methods
    44  type SRv6VppHandler struct {
    45  	core_vppcalls.VppCoreAPI
    46  
    47  	log          logging.Logger
    48  	callsChannel govppapi.Channel
    49  	ifIndexes    ifaceidx.IfaceMetadataIndex
    50  }
    51  
    52  // NewSRv6VppHandler creates new instance of SRv6 vppcalls handler
    53  func NewSRv6VppHandler(c vpp.Client, ifIdx ifaceidx.IfaceMetadataIndex, log logging.Logger) vppcalls.SRv6VppAPI {
    54  	vppChan, err := c.NewAPIChannel()
    55  	if err != nil {
    56  		logging.Warnf("failed to create API channel")
    57  		return nil
    58  	}
    59  	return &SRv6VppHandler{
    60  		callsChannel: vppChan,
    61  		ifIndexes:    ifIdx,
    62  		log:          log,
    63  		VppCoreAPI:   core_vpp2101.NewVpeHandler(c),
    64  	}
    65  }
    66  
    67  func addressToIP(address ip_types.Address) net.IP {
    68  	if address.Af == ip_types.ADDRESS_IP6 {
    69  		ipAddr := address.Un.GetIP6()
    70  		return net.IP(ipAddr[:]).To16()
    71  	}
    72  	ipAddr := address.Un.GetIP4()
    73  	return net.IP(ipAddr[:]).To4()
    74  }
    75  
    76  // parseIPv6 parses string <str> to IPv6 address (including IPv4 address converted to IPv6 address)
    77  func parseIPv6(str string) (net.IP, error) {
    78  	ip := net.ParseIP(str)
    79  	if ip == nil {
    80  		return nil, fmt.Errorf(" %q is not ip address", str)
    81  	}
    82  	ipv6 := ip.To16()
    83  	if ipv6 == nil {
    84  		return nil, fmt.Errorf(" %q is not ipv6 address", str)
    85  	}
    86  	return ipv6, nil
    87  }
    88  
    89  func IPToAddress(ipstr string) (addr ip_types.Address, err error) {
    90  	netIP := net.ParseIP(ipstr)
    91  	if netIP == nil {
    92  		return ip_types.Address{}, fmt.Errorf("invalid IP: %q", ipstr)
    93  	}
    94  	if ip4 := netIP.To4(); ip4 == nil {
    95  		addr.Af = ip_types.ADDRESS_IP6
    96  		var ip6addr ip_types.IP6Address
    97  		copy(ip6addr[:], netIP.To16())
    98  		addr.Un.SetIP6(ip6addr)
    99  	} else {
   100  		addr.Af = ip_types.ADDRESS_IP4
   101  		var ip4addr ip_types.IP4Address
   102  		copy(ip4addr[:], ip4.To4())
   103  		addr.Un.SetIP4(ip4addr)
   104  	}
   105  	return
   106  }