forked from cilium/cilium
/
datapath.go
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/
datapath.go
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// Copyright 2019 Authors of Cilium
//
// 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 linux
import (
"github.com/cilium/cilium/pkg/datapath"
"github.com/cilium/cilium/pkg/endpoint/connector"
"github.com/cilium/cilium/pkg/logging/logfields"
)
// DatapathConfiguration is the static configuration of the datapath. The
// configuration cannot change throughout the lifetime of a datapath object.
type DatapathConfiguration struct {
// HostDevice is the name of the device to be used to access the host.
HostDevice string
// EncryptInterface is the name of the device to be used for direct ruoting encryption
EncryptInterface string
}
type rulesManager interface {
InstallProxyRules(proxyPort uint16, ingress bool, name string) error
RemoveProxyRules(proxyPort uint16, ingress bool, name string) error
SupportsOriginalSourceAddr() bool
}
type linuxDatapath struct {
node datapath.NodeHandler
nodeAddressing datapath.NodeAddressing
config DatapathConfiguration
ruleManager rulesManager
}
// NewDatapath creates a new Linux datapath
func NewDatapath(config DatapathConfiguration, ruleManager rulesManager) datapath.Datapath {
dp := &linuxDatapath{
nodeAddressing: NewNodeAddressing(),
config: config,
ruleManager: ruleManager,
}
dp.node = NewNodeHandler(config, dp.nodeAddressing)
if config.EncryptInterface != "" {
if err := connector.DisableRpFilter(config.EncryptInterface); err != nil {
log.WithField(logfields.Interface, config.EncryptInterface).Warn("Rpfilter could not be disabled, node to node encryption may fail")
}
}
return dp
}
// Node returns the handler for node events
func (l *linuxDatapath) Node() datapath.NodeHandler {
return l.node
}
// LocalNodeAddressing returns the node addressing implementation of the local
// node
func (l *linuxDatapath) LocalNodeAddressing() datapath.NodeAddressing {
return l.nodeAddressing
}
func (l *linuxDatapath) InstallProxyRules(proxyPort uint16, ingress bool, name string) error {
return l.ruleManager.InstallProxyRules(proxyPort, ingress, name)
}
func (l *linuxDatapath) RemoveProxyRules(proxyPort uint16, ingress bool, name string) error {
return l.ruleManager.RemoveProxyRules(proxyPort, ingress, name)
}
func (l *linuxDatapath) SupportsOriginalSourceAddr() bool {
return l.ruleManager.SupportsOriginalSourceAddr()
}