func GetNameByIndex(hub *nlgo.RtHub, index int) (string, error) {
req := &syscall.NetlinkMessage{
Header: syscall.NlMsghdr{
Type: syscall.RTM_GETLINK,
Flags: syscall.NLM_F_REQUEST,
},
}
(*nlgo.IfInfoMessage)(req).Set(
syscall.IfInfomsg{
Index: int32(index),
},
nil)
if msgs, err := hub.Sync(*req); err != nil {
return "", err
} else {
for _, msg := range msgs {
switch msg.Header.Type {
case syscall.RTM_NEWLINK:
info := (nlgo.IfInfoMessage)(msg)
if info.IfInfo().Index == int32(index) {
if attrs, err := info.Attrs(); err != nil {
return "", err
} else {
return string(attrs.(nlgo.AttrMap).Get(syscall.IFLA_IFNAME).(nlgo.NulString)), nil
}
}
}
}
return "", fmt.Errorf("response empty")
}
}
func GetByName(hub *nlgo.RtHub, name string) (syscall.IfInfomsg, error) {
var ret syscall.IfInfomsg
req := &syscall.NetlinkMessage{
Header: syscall.NlMsghdr{
Type: syscall.RTM_GETLINK,
Flags: syscall.NLM_F_REQUEST,
},
}
(*nlgo.IfInfoMessage)(req).Set(
syscall.IfInfomsg{},
nlgo.AttrSlice{
nlgo.Attr{
Header: syscall.NlAttr{
Type: syscall.IFLA_IFNAME,
},
Value: nlgo.NulString(name),
},
})
if msgs, err := hub.Sync(*req); err != nil {
return ret, err
} else {
for _, msg := range msgs {
switch msg.Header.Type {
case syscall.RTM_NEWLINK:
info := (nlgo.IfInfoMessage)(msg)
if attrs, err := info.Attrs(); err != nil {
continue
} else if string(attrs.(nlgo.AttrMap).Get(syscall.IFLA_IFNAME).(nlgo.NulString)) == name {
return info.IfInfo(), nil
}
}
}
}
return ret, fmt.Errorf("response empty")
}