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Merge pull request #73 from amshinde/vendor-upstream-ethtool

Browse Source 
vendor: Vendor github.com/safchain/ethtool
This commit is contained in:
Eric Ernst 2018-03-19 15:10:11 -07:00 committed by GitHub
commit cd146dfeed
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9 changed files with 911 additions and 233 deletions
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7
Gopkg.lock generated
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@ -130,6 +130,11 @@
revision = "792786c7400a136282c1664665ae0a8db921c6c2" revision = "792786c7400a136282c1664665ae0a8db921c6c2"
version = "v1.0.0" version = "v1.0.0"
[[projects]]
name = "github.com/safchain/ethtool"
packages = ["."]
revision = "79559b488d8848b53a8e34c330140c3fc37ee246"
[[projects]] [[projects]]
name = "github.com/sirupsen/logrus" name = "github.com/sirupsen/logrus"
packages = [ packages = [
@ -245,6 +250,6 @@
[solve-meta] [solve-meta]
analyzer-name = "dep" analyzer-name = "dep"
analyzer-version = 1 analyzer-version = 1
inputs-digest = "8dba9fde76331ee3c2baa2a34230f174e3ab122a6b17975c533cdfbf42b49617" inputs-digest = "a50c12d36c3881a8fdc1c46a9a2ef78edc27ae1a1ec0c448799f37c589209108"
solver-name = "gps-cdcl" solver-name = "gps-cdcl"
solver-version = 1 solver-version = 1

4
Gopkg.toml
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@ -66,6 +66,10 @@
name = "github.com/containerd/cri-containerd" name = "github.com/containerd/cri-containerd"
revision = "3d382e2f5dabe3bae62ceb9ded56bdee847008ee" revision = "3d382e2f5dabe3bae62ceb9ded56bdee847008ee"
[[constraint]]
name = "github.com/safchain/ethtool"
revision = "79559b488d8848b53a8e34c330140c3fc37ee246"
[prune] [prune]
non-go = true non-go = true
go-tests = true go-tests = true

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vendor/github.com/safchain/ethtool/LICENSE generated vendored Normal file
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385
vendor/github.com/safchain/ethtool/ethtool.go generated vendored Normal file
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@ -0,0 +1,385 @@
/*
*
* 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 (
"bytes"
"encoding/hex"
"fmt"
"syscall"
"unsafe"
)
// Maximum size of an interface name
const (
IFNAMSIZ = 16
)
// ioctl ethtool request
const (
SIOCETHTOOL = 0x8946
)
// ethtool stats related constants.
const (
ETH_GSTRING_LEN = 32
ETH_SS_STATS = 1
ETHTOOL_GDRVINFO = 0x00000003
ETHTOOL_GSTRINGS = 0x0000001b
ETHTOOL_GSTATS = 0x0000001d
// other CMDs from ethtool-copy.h of ethtool-3.5 package
ETHTOOL_GSET = 0x00000001 /* Get settings. */
ETHTOOL_SSET = 0x00000002 /* Set settings. */
ETHTOOL_GMSGLVL = 0x00000007 /* Get driver message level */
ETHTOOL_SMSGLVL = 0x00000008 /* Set driver msg level. */
ETHTOOL_GMODULEINFO = 0x00000042 /* Get plug-in module information */
ETHTOOL_GMODULEEEPROM = 0x00000043 /* Get plug-in module eeprom */
ETHTOOL_GPERMADDR = 0x00000020
)
// MAX_GSTRINGS maximum number of stats entries that ethtool can
// retrieve currently.
const (
MAX_GSTRINGS = 1000
EEPROM_LEN = 640
PERMADDR_LEN = 32
)
type ifreq struct {
ifr_name [IFNAMSIZ]byte
ifr_data uintptr
}
type ethtoolDrvInfo struct {
cmd uint32
driver [32]byte
version [32]byte
fw_version [32]byte
bus_info [32]byte
erom_version [32]byte
reserved2 [12]byte
n_priv_flags uint32
n_stats uint32
testinfo_len uint32
eedump_len uint32
regdump_len uint32
}
type ethtoolGStrings struct {
cmd uint32
string_set uint32
len uint32
data [MAX_GSTRINGS * ETH_GSTRING_LEN]byte
}
type ethtoolStats struct {
cmd uint32
n_stats uint32
data [MAX_GSTRINGS]uint64
}
type ethtoolEeprom struct {
cmd uint32
magic uint32
offset uint32
len uint32
data [EEPROM_LEN]byte
}
type ethtoolModInfo struct {
cmd uint32
tpe uint32
eeprom_len uint32
reserved [8]uint32
}
type ethtoolPermAddr struct {
cmd uint32
size uint32
data [PERMADDR_LEN]byte
}
type Ethtool struct {
fd int
}
// DriverName returns the driver name of the given interface.
func (e *Ethtool) DriverName(intf string) (string, error) {
info, err := e.getDriverInfo(intf)
if err != nil {
return "", err
}
return string(bytes.Trim(info.driver[:], "\x00")), nil
}
// BusInfo returns the bus info of the given interface.
func (e *Ethtool) BusInfo(intf string) (string, error) {
info, err := e.getDriverInfo(intf)
if err != nil {
return "", err
}
return string(bytes.Trim(info.bus_info[:], "\x00")), nil
}
func (e *Ethtool) ModuleEeprom(intf string) ([]byte, error) {
eeprom, _, err := e.getModuleEeprom(intf)
if err != nil {
return nil, err
}
return eeprom.data[:eeprom.len], nil
}
func (e *Ethtool) ModuleEepromHex(intf string) (string, error) {
eeprom, _, err := e.getModuleEeprom(intf)
if err != nil {
return "", err
}
return hex.EncodeToString(eeprom.data[:eeprom.len]), nil
}
func (e *Ethtool) DriverInfo(intf string) (ethtoolDrvInfo, error) {
drvInfo, err := e.getDriverInfo(intf)
if err != nil {
return ethtoolDrvInfo{}, err
}
return drvInfo, nil
}
func (e *Ethtool) PermAddr(intf string) (string, error) {
permAddr, err := e.getPermAddr(intf)
if err != nil {
return "", err
}
if permAddr.data[0] == 0 && permAddr.data[1] == 0 &&
permAddr.data[2] == 0 && permAddr.data[3] == 0 &&
permAddr.data[4] == 0 && permAddr.data[5] == 0 {
return "", nil
}
return fmt.Sprintf("%x:%x:%x:%x:%x:%x",
permAddr.data[0:1],
permAddr.data[1:2],
permAddr.data[2:3],
permAddr.data[3:4],
permAddr.data[4:5],
permAddr.data[5:6],
), nil
}
func (e *Ethtool) getDriverInfo(intf string) (ethtoolDrvInfo, error) {
drvinfo := ethtoolDrvInfo{
cmd: ETHTOOL_GDRVINFO,
}
var name [IFNAMSIZ]byte
copy(name[:], []byte(intf))
ifr := ifreq{
ifr_name: name,
ifr_data: uintptr(unsafe.Pointer(&drvinfo)),
}
_, _, ep := syscall.Syscall(syscall.SYS_IOCTL, uintptr(e.fd), SIOCETHTOOL, uintptr(unsafe.Pointer(&ifr)))
if ep != 0 {
return ethtoolDrvInfo{}, syscall.Errno(ep)
}
return drvinfo, nil
}
func (e *Ethtool) getPermAddr(intf string) (ethtoolPermAddr, error) {
permAddr := ethtoolPermAddr{
cmd: ETHTOOL_GPERMADDR,
size: PERMADDR_LEN,
}
var name [IFNAMSIZ]byte
copy(name[:], []byte(intf))
ifr := ifreq{
ifr_name: name,
ifr_data: uintptr(unsafe.Pointer(&permAddr)),
}
_, _, ep := syscall.Syscall(syscall.SYS_IOCTL, uintptr(e.fd), SIOCETHTOOL, uintptr(unsafe.Pointer(&ifr)))
if ep != 0 {
return ethtoolPermAddr{}, syscall.Errno(ep)
}
return permAddr, nil
}
func (e *Ethtool) getModuleEeprom(intf string) (ethtoolEeprom, ethtoolModInfo, error) {
modInfo := ethtoolModInfo{
cmd: ETHTOOL_GMODULEINFO,
}
var name [IFNAMSIZ]byte
copy(name[:], []byte(intf))
ifr := ifreq{
ifr_name: name,
ifr_data: uintptr(unsafe.Pointer(&modInfo)),
}
_, _, ep := syscall.Syscall(syscall.SYS_IOCTL, uintptr(e.fd), SIOCETHTOOL, uintptr(unsafe.Pointer(&ifr)))
if ep != 0 {
return ethtoolEeprom{}, ethtoolModInfo{}, syscall.Errno(ep)
}
eeprom := ethtoolEeprom{
cmd: ETHTOOL_GMODULEEEPROM,
len: modInfo.eeprom_len,
offset: 0,
}
if modInfo.eeprom_len > EEPROM_LEN {
return ethtoolEeprom{}, ethtoolModInfo{}, fmt.Errorf("eeprom size: %d is larger than buffer size: %d", modInfo.eeprom_len, EEPROM_LEN)
}
ifr.ifr_data = uintptr(unsafe.Pointer(&eeprom))
_, _, ep = syscall.Syscall(syscall.SYS_IOCTL, uintptr(e.fd), SIOCETHTOOL, uintptr(unsafe.Pointer(&ifr)))
if ep != 0 {
return ethtoolEeprom{}, ethtoolModInfo{}, syscall.Errno(ep)
}
return eeprom, modInfo, nil
}
// Stats retrieves stats of the given interface name.
func (e *Ethtool) Stats(intf string) (map[string]uint64, error) {
drvinfo := ethtoolDrvInfo{
cmd: ETHTOOL_GDRVINFO,
}
var name [IFNAMSIZ]byte
copy(name[:], []byte(intf))
ifr := ifreq{
ifr_name: name,
ifr_data: uintptr(unsafe.Pointer(&drvinfo)),
}
_, _, ep := syscall.Syscall(syscall.SYS_IOCTL, uintptr(e.fd), SIOCETHTOOL, uintptr(unsafe.Pointer(&ifr)))
if ep != 0 {
return nil, syscall.Errno(ep)
}
if drvinfo.n_stats*ETH_GSTRING_LEN > MAX_GSTRINGS*ETH_GSTRING_LEN {
return nil, fmt.Errorf("ethtool currently doesn't support more than %d entries, received %d", MAX_GSTRINGS, drvinfo.n_stats)
}
gstrings := ethtoolGStrings{
cmd: ETHTOOL_GSTRINGS,
string_set: ETH_SS_STATS,
len: drvinfo.n_stats,
data: [MAX_GSTRINGS * ETH_GSTRING_LEN]byte{},
}
ifr.ifr_data = uintptr(unsafe.Pointer(&gstrings))
_, _, ep = syscall.Syscall(syscall.SYS_IOCTL, uintptr(e.fd), SIOCETHTOOL, uintptr(unsafe.Pointer(&ifr)))
if ep != 0 {
return nil, syscall.Errno(ep)
}
stats := ethtoolStats{
cmd: ETHTOOL_GSTATS,
n_stats: drvinfo.n_stats,
data: [MAX_GSTRINGS]uint64{},
}
ifr.ifr_data = uintptr(unsafe.Pointer(&stats))
_, _, ep = syscall.Syscall(syscall.SYS_IOCTL, uintptr(e.fd), SIOCETHTOOL, uintptr(unsafe.Pointer(&ifr)))
if ep != 0 {
return nil, syscall.Errno(ep)
}
var result = make(map[string]uint64)
for i := 0; i != int(drvinfo.n_stats); i++ {
b := gstrings.data[i*ETH_GSTRING_LEN : i*ETH_GSTRING_LEN+ETH_GSTRING_LEN]
key := string(bytes.Trim(b, "\x00"))
result[key] = stats.data[i]
}
return result, nil
}
func (e *Ethtool) Close() {
syscall.Close(e.fd)
}
func NewEthtool() (*Ethtool, error) {
fd, err := syscall.Socket(syscall.AF_INET, syscall.SOCK_DGRAM, syscall.IPPROTO_IP)
if err != nil {
return nil, err
}
return &Ethtool{
fd: int(fd),
}, nil
}
func BusInfo(intf string) (string, error) {
e, err := NewEthtool()
if err != nil {
return "", err
}
defer e.Close()
return e.BusInfo(intf)
}
func DriverName(intf string) (string, error) {
e, err := NewEthtool()
if err != nil {
return "", err
}
defer e.Close()
return e.DriverName(intf)
}
func Stats(intf string) (map[string]uint64, error) {
e, err := NewEthtool()
if err != nil {
return nil, err
}
defer e.Close()
return e.Stats(intf)
}
func PermAddr(intf string) (string, error) {
e, err := NewEthtool()
if err != nil {
return "", err
}
defer e.Close()
return e.PermAddr(intf)
}

200
vendor/github.com/safchain/ethtool/ethtool_cmd.go generated vendored Normal file
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@ -0,0 +1,200 @@
/*
*
* 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 (
"reflect"
"syscall"
"unsafe"
)
type EthtoolCmd struct { /* ethtool.c: struct ethtool_cmd */
Cmd uint32
Supported uint32
Advertising uint32
Speed uint16
Duplex uint8
Port uint8
Phy_address uint8
Transceiver uint8
Autoneg uint8
Mdio_support uint8
Maxtxpkt uint32
Maxrxpkt uint32
Speed_hi uint16
Eth_tp_mdix uint8
Reserved2 uint8
Lp_advertising uint32
Reserved [2]uint32
}
// CmdGet returns the interface settings in the receiver struct
// and returns speed
func (ecmd *EthtoolCmd) CmdGet(intf string) (uint32, error) {
e, err := NewEthtool()
if err != nil {
return 0, err
}
defer e.Close()
return e.CmdGet(ecmd, intf)
}
// CmdSet sets and returns the settings in the receiver struct
// and returns speed
func (ecmd *EthtoolCmd) CmdSet(intf string) (uint32, error) {
e, err := NewEthtool()
if err != nil {
return 0, err
}
defer e.Close()
return e.CmdSet(ecmd, intf)
}
func (f *EthtoolCmd) reflect(retv *map[string]uint64) {
val := reflect.ValueOf(f).Elem()
for i := 0; i < val.NumField(); i++ {
valueField := val.Field(i)
typeField := val.Type().Field(i)
t := valueField.Interface()
//tt := reflect.TypeOf(t)
//fmt.Printf(" t %T %v tt %T %v\n", t, t, tt, tt)
switch t.(type) {
case uint32:
//fmt.Printf(" t is uint32\n")
(*retv)[typeField.Name] = uint64(t.(uint32))
case uint16:
(*retv)[typeField.Name] = uint64(t.(uint16))
case uint8:
(*retv)[typeField.Name] = uint64(t.(uint8))
case int32:
(*retv)[typeField.Name] = uint64(t.(int32))
case int16:
(*retv)[typeField.Name] = uint64(t.(int16))
case int8:
(*retv)[typeField.Name] = uint64(t.(int8))
default:
(*retv)[typeField.Name+"_unknown_type"] = 0
}
//tag := typeField.Tag
//fmt.Printf("Field Name: %s,\t Field Value: %v,\t Tag Value: %s\n",
// typeField.Name, valueField.Interface(), tag.Get("tag_name"))
}
}
// CmdGet returns the interface settings in the receiver struct
// and returns speed
func (e *Ethtool) CmdGet(ecmd *EthtoolCmd, intf string) (uint32, error) {
ecmd.Cmd = ETHTOOL_GSET
var name [IFNAMSIZ]byte
copy(name[:], []byte(intf))
ifr := ifreq{
ifr_name: name,
ifr_data: uintptr(unsafe.Pointer(ecmd)),
}
_, _, ep := syscall.Syscall(syscall.SYS_IOCTL, uintptr(e.fd),
SIOCETHTOOL, uintptr(unsafe.Pointer(&ifr)))
if ep != 0 {
return 0, syscall.Errno(ep)
}
var speedval uint32 = (uint32(ecmd.Speed_hi) << 16) |
(uint32(ecmd.Speed) & 0xffff)
return speedval, nil
}
// CmdSet sets and returns the settings in the receiver struct
// and returns speed
func (e *Ethtool) CmdSet(ecmd *EthtoolCmd, intf string) (uint32, error) {
ecmd.Cmd = ETHTOOL_SSET
var name [IFNAMSIZ]byte
copy(name[:], []byte(intf))
ifr := ifreq{
ifr_name: name,
ifr_data: uintptr(unsafe.Pointer(ecmd)),
}
_, _, ep := syscall.Syscall(syscall.SYS_IOCTL, uintptr(e.fd),
SIOCETHTOOL, uintptr(unsafe.Pointer(&ifr)))
if ep != 0 {
return 0, syscall.Errno(ep)
}
var speedval uint32 = (uint32(ecmd.Speed_hi) << 16) |
(uint32(ecmd.Speed) & 0xffff)
return speedval, nil
}
// CmdGetMapped returns the interface settings in a map
func (e *Ethtool) CmdGetMapped(intf string) (map[string]uint64, error) {
ecmd := EthtoolCmd{
Cmd: ETHTOOL_GSET,
}
var name [IFNAMSIZ]byte
copy(name[:], []byte(intf))
ifr := ifreq{
ifr_name: name,
ifr_data: uintptr(unsafe.Pointer(&ecmd)),
}
_, _, ep := syscall.Syscall(syscall.SYS_IOCTL, uintptr(e.fd),
SIOCETHTOOL, uintptr(unsafe.Pointer(&ifr)))
if ep != 0 {
return nil, syscall.Errno(ep)
}
var result = make(map[string]uint64)
// ref https://gist.github.com/drewolson/4771479
// Golang Reflection Example
ecmd.reflect(&result)
var speedval uint32 = (uint32(ecmd.Speed_hi) << 16) |
(uint32(ecmd.Speed) & 0xffff)
result["speed"] = uint64(speedval)
return result, nil
}
func CmdGetMapped(intf string) (map[string]uint64, error) {
e, err := NewEthtool()
if err != nil {
return nil, err
}
defer e.Close()
return e.CmdGetMapped(intf)
}

113
vendor/github.com/safchain/ethtool/ethtool_msglvl.go generated vendored Normal file
View File

@ -0,0 +1,113 @@
/*
*
* 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 (
"syscall"
"unsafe"
)
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 := syscall.Syscall(syscall.SYS_IOCTL, uintptr(e.fd),
SIOCETHTOOL, uintptr(unsafe.Pointer(&ifr)))
if ep != 0 {
return 0, syscall.Errno(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 := syscall.Syscall(syscall.SYS_IOCTL, uintptr(e.fd),
SIOCETHTOOL, uintptr(unsafe.Pointer(&ifr)))
if ep != 0 {
return 0, 0, syscall.Errno(ep)
}
readval := edata.data
edata.cmd = ETHTOOL_SMSGLVL
edata.data = valset
_, _, ep = syscall.Syscall(syscall.SYS_IOCTL, uintptr(e.fd),
SIOCETHTOOL, uintptr(unsafe.Pointer(&ifr)))
if ep != 0 {
return 0, 0, syscall.Errno(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)
}

2
virtcontainers/network.go
View File

@ -30,8 +30,8 @@ import (
"time" "time"
"github.com/containernetworking/plugins/pkg/ns" "github.com/containernetworking/plugins/pkg/ns"
"github.com/kata-containers/runtime/virtcontainers/pkg/ethtool"
"github.com/kata-containers/runtime/virtcontainers/pkg/uuid" "github.com/kata-containers/runtime/virtcontainers/pkg/uuid"
"github.com/safchain/ethtool"
"github.com/sirupsen/logrus" "github.com/sirupsen/logrus"
"github.com/vishvananda/netlink" "github.com/vishvananda/netlink"
"github.com/vishvananda/netns" "github.com/vishvananda/netns"

164
virtcontainers/pkg/ethtool/ethtool.go
View File

@ -1,164 +0,0 @@
/*
*
* 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
import (
"bytes"
"syscall"
"unsafe"
)
// Maximum size of an interface name
const (
IFNAMSIZ = 16
)
// ioctl ethtool request
const (
SIOCETHTOOL = 0x8946
)
// ethtool stats related constants.
const (
ethGstringLen = 32
ethtoolGDrvInfo = 0x00000003
)
// maxGtrings maximum number of stats entries that ethtool can
// retrieve currently.
const (
maxGstrings = 1000
)
type ifreq struct {
ifrName [IFNAMSIZ]byte
ifrData uintptr
}
type ethtoolDrvInfo struct {
cmd uint32
driver [32]byte
version [32]byte
fwVersion [32]byte
busInfo [32]byte
eromVersion [32]byte
reserved2 [12]byte
nPrivFlags uint32
nStats uint32
testinfoLen uint32
eedumpLen uint32
regdumpLen uint32
}
type ethtoolGStrings struct {
cmd uint32
stringSet uint32
len uint32
data [maxGstrings * ethGstringLen]byte
}
type ethtoolStats struct {
cmd uint32
nStats uint32
data [maxGstrings]uint64
}
// Ethtool file descriptor.
type Ethtool struct {
fd int
}
// DriverName returns the driver name of the given interface.
func (e *Ethtool) DriverName(intf string) (string, error) {
info, err := e.getDriverInfo(intf)
if err != nil {
return "", err
}
return string(bytes.Trim(info.driver[:], "\x00")), nil
}
// BusInfo returns the bus info of the given interface.
func (e *Ethtool) BusInfo(intf string) (string, error) {
info, err := e.getDriverInfo(intf)
if err != nil {
return "", err
}
return string(bytes.Trim(info.busInfo[:], "\x00")), nil
}
func (e *Ethtool) getDriverInfo(intf string) (ethtoolDrvInfo, error) {
drvinfo := ethtoolDrvInfo{
cmd: ethtoolGDrvInfo,
}
var name [IFNAMSIZ]byte
copy(name[:], []byte(intf))
ifr := ifreq{
ifrName: name,
ifrData: uintptr(unsafe.Pointer(&drvinfo)),
}
_, _, ep := syscall.Syscall(syscall.SYS_IOCTL, uintptr(e.fd), SIOCETHTOOL, uintptr(unsafe.Pointer(&ifr)))
if ep != 0 {
return ethtoolDrvInfo{}, syscall.Errno(ep)
}
return drvinfo, nil
}
// Close closes the ethtool file descriptor.
func (e *Ethtool) Close() {
syscall.Close(e.fd)
}
// NewEthtool opens a ethtool socket.
func NewEthtool() (*Ethtool, error) {
fd, _, err := syscall.RawSyscall(syscall.SYS_SOCKET, syscall.AF_INET, syscall.SOCK_DGRAM, syscall.IPPROTO_IP)
if err != 0 {
return nil, syscall.Errno(err)
}
return &Ethtool{
fd: int(fd),
}, nil
}
// BusInfo returns the bus information of the network device.
func BusInfo(intf string) (string, error) {
e, err := NewEthtool()
if err != nil {
return "", err
}
defer e.Close()
return e.BusInfo(intf)
}
// DriverName returns the driver name of the network interface.
func DriverName(intf string) (string, error) {
e, err := NewEthtool()
if err != nil {
return "", err
}
defer e.Close()
return e.DriverName(intf)
}

67
virtcontainers/pkg/ethtool/ethtool_test.go
View File

@ -1,67 +0,0 @@
/*
*
* 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
import (
"net"
"testing"
)
func TestDriverName(t *testing.T) {
intfs, err := net.Interfaces()
if err != nil {
t.Fatal(err)
}
// we expected to have at least one success
success := false
for _, intf := range intfs {
_, err := DriverName(intf.Name)
if err == nil {
success = true
}
}
if !success {
t.Fatal("Unable to retrieve driver from any interface of this system.")
}
}
func TestBusInfo(t *testing.T) {
intfs, err := net.Interfaces()
if err != nil {
t.Fatal(err)
}
// we expected to have at least one success
success := false
for _, intf := range intfs {
_, err := BusInfo(intf.Name)
if err == nil {
success = true
}
}
if !success {
t.Fatal("Unable to retrieve bus info from any interface of this system.")
}
}