diff options
Diffstat (limited to 'vendor/github.com/safchain/ethtool/ethtool_cmd.go')
| -rw-r--r-- | vendor/github.com/safchain/ethtool/ethtool_cmd.go | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/vendor/github.com/safchain/ethtool/ethtool_cmd.go b/vendor/github.com/safchain/ethtool/ethtool_cmd.go new file mode 100644 index 000000000..d0c35e476 --- /dev/null +++ b/vendor/github.com/safchain/ethtool/ethtool_cmd.go @@ -0,0 +1,207 @@ +/* + * + * 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 ( + "math" + "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) + if speedval == math.MaxUint16 { + speedval = math.MaxUint32 + } + + 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) + if speedval == math.MaxUint16 { + speedval = math.MaxUint32 + } + + 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) +} |