github.com/elfadel/cilium@v1.6.12/pkg/datapath/link/link.go (about)

     1  // Copyright 2016-2017 Authors of Cilium
     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 link
    16  
    17  import (
    18  	"fmt"
    19  
    20  	"github.com/vishvananda/netlink"
    21  )
    22  
    23  // DeleteByName deletes the interface with the name ifName.
    24  func DeleteByName(ifName string) error {
    25  	iface, err := netlink.LinkByName(ifName)
    26  	if err != nil {
    27  		return fmt.Errorf("failed to lookup %q: %v", ifName, err)
    28  	}
    29  
    30  	if err = netlink.LinkDel(iface); err != nil {
    31  		return fmt.Errorf("failed to delete %q: %v", ifName, err)
    32  	}
    33  
    34  	return nil
    35  }
    36  
    37  // Rename renames a network link
    38  func Rename(curName, newName string) error {
    39  	link, err := netlink.LinkByName(curName)
    40  	if err != nil {
    41  		return err
    42  	}
    43  
    44  	return netlink.LinkSetName(link, newName)
    45  }