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dump_stn_vppcalls.go
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dump_stn_vppcalls.go
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// Copyright (c) 2019 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 vpp2001_324
import (
"net"
"github.com/ligato/vpp-agent/plugins/vpp/stnplugin/vppcalls"
"github.com/pkg/errors"
stn "github.com/ligato/vpp-agent/api/models/vpp/stn"
vpp_stn "github.com/ligato/vpp-agent/plugins/vpp/binapi/vpp2001_324/stn"
)
// DumpSTNRules implements STN handler, it returns all STN rules present on the VPP
func (h *StnVppHandler) DumpSTNRules() ([]*vppcalls.StnDetails, error) {
var stnDetails []*vppcalls.StnDetails
req := &vpp_stn.StnRulesDump{}
reqCtx := h.callsChannel.SendMultiRequest(req)
for {
msg := &vpp_stn.StnRulesDetails{}
stop, err := reqCtx.ReceiveReply(msg)
if stop {
break
}
if err != nil {
return nil, errors.Errorf("error reading STN rules from the VPP: %v", err)
}
ifName, _, found := h.ifIndexes.LookupBySwIfIndex(msg.SwIfIndex)
if !found {
h.log.Warnf("STN dump: interface name not found for index %d", msg.SwIfIndex)
}
var stnIP string
if uintToBool(msg.IsIP4) {
stnIP = net.IP(msg.IPAddress[:4]).To4().String()
} else {
stnIP = net.IP(msg.IPAddress).To16().String()
}
stnRule := &stn.Rule{
IpAddress: stnIP,
Interface: ifName,
}
stnMeta := &vppcalls.StnMeta{
IfIdx: msg.SwIfIndex,
}
stnDetails = append(stnDetails, &vppcalls.StnDetails{
Rule: stnRule,
Meta: stnMeta,
})
}
return stnDetails, nil
}
func uintToBool(value uint8) bool {
if value == 0 {
return false
}
return true
}