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external_node_controller_linux.go
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external_node_controller_linux.go
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// Copyright 2022 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 externalnode
import (
"fmt"
"github.com/vishvananda/netlink"
"antrea.io/antrea/pkg/agent/config"
"antrea.io/antrea/pkg/agent/util"
)
var (
linkByName = netlink.LinkByName
linkSetMTU = netlink.LinkSetMTU
linkSetUp = netlink.LinkSetUp
removeLinkIPs = util.RemoveLinkIPs
removeLinkRoutes = util.RemoveLinkRoutes
configureLinkAddresses = util.ConfigureLinkAddresses
configureLinkRoutes = util.ConfigureLinkRoutes
)
func (c *ExternalNodeController) moveIFConfigurations(adapterConfig *config.AdapterNetConfig, src string, dst string) error {
dstLink, err := linkByName(dst)
if err != nil {
return fmt.Errorf("failed to find link for destination %s, err %v", dst, err)
}
if src != "" {
srcLink, err := linkByName(src)
if err != nil {
return fmt.Errorf("failed to find link for source %s, err %v", src, err)
}
if err := linkSetMTU(dstLink, adapterConfig.MTU); err != nil {
return err
}
if err := linkSetUp(dstLink); err != nil {
return err
}
if err := removeLinkIPs(srcLink); err != nil {
return err
}
if err := removeLinkRoutes(srcLink); err != nil {
return err
}
}
dstIndex := dstLink.Attrs().Index
// Configure the source interface's IPs on the destination interface.
if err := configureLinkAddresses(dstIndex, adapterConfig.IPs); err != nil {
return err
}
// Configure the source interface's routes on the destination interface.
if err := configureLinkRoutes(dstLink, adapterConfig.Routes); err != nil {
return err
}
return nil
}
func (c *ExternalNodeController) removeExternalNodeConfig() error {
return nil
}