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conntrack_others.go
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/
conntrack_others.go
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//go:build !linux
// +build !linux
// Copyright 2020 Antrea Authors
//
// 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 connections
import (
"fmt"
"net"
"strconv"
"strings"
"antrea.io/antrea/pkg/agent/config"
"antrea.io/antrea/pkg/agent/openflow"
)
type connTrackOvsCtlWindows struct {
connTrackOvsCtl
}
func (ct *connTrackOvsCtlWindows) GetMaxConnections() (int, error) {
var zoneID int
if ct.serviceCIDRv4 != nil {
zoneID = openflow.CtZone
} else {
zoneID = openflow.CtZoneV6
}
// dpctl/ct-get-maxconns returns operation not supported on Windows node, use dpctl/ct-get-limits intead.
cmdOutput, execErr := ct.ovsctlClient.RunAppctlCmd("dpctl/ct-get-limits", false, fmt.Sprintf("zone=%d", zoneID))
if execErr != nil {
return 0, fmt.Errorf("error when executing dpctl/ct-get-limits command: %v", execErr)
}
flowSlice := strings.Split(string(cmdOutput), ",")
for _, fs := range flowSlice {
if strings.HasPrefix(fs, "limit") {
fields := strings.Split(fs, "=")
maxConns, err := strconv.Atoi(fields[len(fields)-1])
if err != nil {
return 0, fmt.Errorf("error when converting '%s' to int", fields[len(fields)-1])
}
return maxConns, nil
}
}
return 0, fmt.Errorf("couldn't find limit field in dpctl/ct-get-limits command output '%s'", cmdOutput)
}
func NewConnTrackSystem(nodeConfig *config.NodeConfig, serviceCIDRv4 *net.IPNet, serviceCIDRv6 *net.IPNet, isAntreaProxyEnabled bool) *connTrackOvsCtlWindows {
return &connTrackOvsCtlWindows{*NewConnTrackOvsAppCtl(nodeConfig, serviceCIDRv4, serviceCIDRv6, isAntreaProxyEnabled)}
}