go.ligato.io/vpp-agent/v3@v3.5.0/plugins/vpp/ipfixplugin/vppcalls/ipfix_vppcalls.go (about)

     1  // Copyright (c) 2020 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 vppcalls
    16  
    17  import (
    18  	govppapi "go.fd.io/govpp/api"
    19  	"go.ligato.io/cn-infra/v2/logging"
    20  
    21  	"go.ligato.io/vpp-agent/v3/plugins/vpp"
    22  	"go.ligato.io/vpp-agent/v3/plugins/vpp/ifplugin/ifaceidx"
    23  	ipfix "go.ligato.io/vpp-agent/v3/proto/ligato/vpp/ipfix"
    24  )
    25  
    26  const (
    27  	// MinPathMTU and MaxPathMTU values were copied from VPP source code.
    28  	// If something will change, please, be kind and update values here
    29  	// and also update error messages in the IPFIX descriptor.
    30  	MinPathMTU = 68
    31  	MaxPathMTU = 1450
    32  )
    33  
    34  // IpfixVppAPI provides methods for managing VPP IPFIX configuration.
    35  type IpfixVppAPI interface {
    36  	SetExporter(conf *ipfix.IPFIX) error
    37  	DumpExporters() ([]*ipfix.IPFIX, error)
    38  
    39  	SetFPParams(conf *ipfix.FlowProbeParams) error
    40  
    41  	AddFPFeature(conf *ipfix.FlowProbeFeature) error
    42  	DelFPFeature(conf *ipfix.FlowProbeFeature) error
    43  }
    44  
    45  var handler = vpp.RegisterHandler(vpp.HandlerDesc{
    46  	Name:       "ipfix",
    47  	HandlerAPI: (*IpfixVppAPI)(nil),
    48  })
    49  
    50  func AddIpfixHandlerVersion(version vpp.Version, msgs []govppapi.Message,
    51  	h func(ch govppapi.Channel, ifIdx ifaceidx.IfaceMetadataIndex, log logging.Logger) IpfixVppAPI,
    52  ) {
    53  	handler.AddVersion(vpp.HandlerVersion{
    54  		Version: version,
    55  		Check: func(c vpp.Client) error {
    56  			ch, err := c.NewAPIChannel()
    57  			if err != nil {
    58  				return err
    59  			}
    60  			return ch.CheckCompatiblity(msgs...)
    61  		},
    62  		NewHandler: func(c vpp.Client, a ...interface{}) vpp.HandlerAPI {
    63  			ch, err := c.NewAPIChannel()
    64  			if err != nil {
    65  				return err
    66  			}
    67  			return h(ch, a[0].(ifaceidx.IfaceMetadataIndex), a[1].(logging.Logger))
    68  		},
    69  	})
    70  }
    71  
    72  func CompatibleIpfixVppHandler(c vpp.Client, ifIdx ifaceidx.IfaceMetadataIndex, log logging.Logger) IpfixVppAPI {
    73  	if v := handler.FindCompatibleVersion(c); v != nil {
    74  		return v.NewHandler(c, ifIdx, log).(IpfixVppAPI)
    75  	}
    76  	return nil
    77  }