115 lines
2.8 KiB
Go
115 lines
2.8 KiB
Go
|
/*
|
||
|
|
*
|
||
|
|
* Licensed to the Apache Software Foundation (ASF) under one
|
||
|
|
* or more contributor license agreements. See the NOTICE file
|
||
|
|
* distributed with this work for additional information
|
||
|
|
* regarding copyright ownership. The ASF licenses this file
|
||
|
|
* to you 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 ethtool aims to provide a library giving a simple access to the
|
||
|
|
// Linux SIOCETHTOOL ioctl operations. It can be used to retrieve informations
|
||
|
|
// from a network device like statistics, driver related informations or
|
||
|
|
// even the peer of a VETH interface.
|
||
|
|
package ethtool
|
||
|
|
|
||
|
|
import (
|
||
|
|
"unsafe"
|
||
|
|
|
||
|
|
"golang.org/x/sys/unix"
|
||
|
|
)
|
||
|
|
|
||
|
|
type ethtoolValue struct { /* ethtool.c: struct ethtool_value */
|
||
|
|
cmd uint32
|
||
|
|
data uint32
|
||
|
|
}
|
||
|
|
|
||
|
|
// MsglvlGet returns the msglvl of the given interface.
|
||
|
|
func (e *Ethtool) MsglvlGet(intf string) (uint32, error) {
|
||
|
|
edata := ethtoolValue{
|
||
|
|
cmd: ETHTOOL_GMSGLVL,
|
||
|
|
}
|
||
|
|
|
||
|
|
var name [IFNAMSIZ]byte
|
||
|
|
copy(name[:], []byte(intf))
|
||
|
|
|
||
|
|
ifr := ifreq{
|
||
|
|
ifr_name: name,
|
||
|
|
ifr_data: uintptr(unsafe.Pointer(&edata)),
|
||
|
|
}
|
||
|
|
|
||
|
|
_, _, ep := unix.Syscall(unix.SYS_IOCTL, uintptr(e.fd),
|
||
|
|
SIOCETHTOOL, uintptr(unsafe.Pointer(&ifr)))
|
||
|
|
if ep != 0 {
|
||
|
|
return 0, ep
|
||
|
|
}
|
||
|
|
|
||
|
|
return edata.data, nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// MsglvlSet returns the read-msglvl, post-set-msglvl of the given interface.
|
||
|
|
func (e *Ethtool) MsglvlSet(intf string, valset uint32) (uint32, uint32, error) {
|
||
|
|
edata := ethtoolValue{
|
||
|
|
cmd: ETHTOOL_GMSGLVL,
|
||
|
|
}
|
||
|
|
|
||
|
|
var name [IFNAMSIZ]byte
|
||
|
|
copy(name[:], []byte(intf))
|
||
|
|
|
||
|
|
ifr := ifreq{
|
||
|
|
ifr_name: name,
|
||
|
|
ifr_data: uintptr(unsafe.Pointer(&edata)),
|
||
|
|
}
|
||
|
|
|
||
|
|
_, _, ep := unix.Syscall(unix.SYS_IOCTL, uintptr(e.fd),
|
||
|
|
SIOCETHTOOL, uintptr(unsafe.Pointer(&ifr)))
|
||
|
|
if ep != 0 {
|
||
|
|
return 0, 0, ep
|
||
|
|
}
|
||
|
|
|
||
|
|
readval := edata.data
|
||
|
|
|
||
|
|
edata.cmd = ETHTOOL_SMSGLVL
|
||
|
|
edata.data = valset
|
||
|
|
|
||
|
|
_, _, ep = unix.Syscall(unix.SYS_IOCTL, uintptr(e.fd),
|
||
|
|
SIOCETHTOOL, uintptr(unsafe.Pointer(&ifr)))
|
||
|
|
if ep != 0 {
|
||
|
|
return 0, 0, ep
|
||
|
|
}
|
||
|
|
|
||
|
|
return readval, edata.data, nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// MsglvlGet returns the msglvl of the given interface.
|
||
|
|
func MsglvlGet(intf string) (uint32, error) {
|
||
|
|
e, err := NewEthtool()
|
||
|
|
if err != nil {
|
||
|
|
return 0, err
|
||
|
|
}
|
||
|
|
defer e.Close()
|
||
|
|
return e.MsglvlGet(intf)
|
||
|
|
}
|
||
|
|
|
||
|
|
// MsglvlSet returns the read-msglvl, post-set-msglvl of the given interface.
|
||
|
|
func MsglvlSet(intf string, valset uint32) (uint32, uint32, error) {
|
||
|
|
e, err := NewEthtool()
|
||
|
|
if err != nil {
|
||
|
|
return 0, 0, err
|
||
|
|
}
|
||
|
|
defer e.Close()
|
||
|
|
return e.MsglvlSet(intf, valset)
|
||
|
|
}
|