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package nl
import (
"unsafe"
"golang.org/x/sys/unix"
)
type RtMsg struct {
unix.RtMsg
}
func NewRtMsg() *RtMsg {
return &RtMsg{
RtMsg: unix.RtMsg{
Table: unix.RT_TABLE_MAIN,
Scope: unix.RT_SCOPE_UNIVERSE,
Protocol: unix.RTPROT_BOOT,
Type: unix.RTN_UNICAST,
},
}
}
func NewRtDelMsg() *RtMsg {
return &RtMsg{
RtMsg: unix.RtMsg{
Table: unix.RT_TABLE_MAIN,
Scope: unix.RT_SCOPE_NOWHERE,
},
}
}
func (msg *RtMsg) Len() int {
return unix.SizeofRtMsg
}
func DeserializeRtMsg(b []byte) *RtMsg {
return (*RtMsg)(unsafe.Pointer(&b[0:unix.SizeofRtMsg][0]))
}
func (msg *RtMsg) Serialize() []byte {
return (*(*[unix.SizeofRtMsg]byte)(unsafe.Pointer(msg)))[:]
}
type RtNexthop struct {
unix.RtNexthop
Children []NetlinkRequestData
}
func DeserializeRtNexthop(b []byte) *RtNexthop {
return (*RtNexthop)(unsafe.Pointer(&b[0:unix.SizeofRtNexthop][0]))
}
func (msg *RtNexthop) Len() int {
if len(msg.Children) == 0 {
return unix.SizeofRtNexthop
}
l := 0
for _, child := range msg.Children {
l += rtaAlignOf(child.Len())
}
l += unix.SizeofRtNexthop
return rtaAlignOf(l)
}
func (msg *RtNexthop) Serialize() []byte {
length := msg.Len()
msg.RtNexthop.Len = uint16(length)
buf := make([]byte, length)
copy(buf, (*(*[unix.SizeofRtNexthop]byte)(unsafe.Pointer(msg)))[:])
next := rtaAlignOf(unix.SizeofRtNexthop)
if len(msg.Children) > 0 {
for _, child := range msg.Children {
childBuf := child.Serialize()
copy(buf[next:], childBuf)
next += rtaAlignOf(len(childBuf))
}
}
return buf
}
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