mirror of
https://github.com/k3s-io/k3s.git
synced 2024-06-07 19:41:36 +00:00
108 lines
2.0 KiB
Go
108 lines
2.0 KiB
Go
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
|
|
}
|
|
|
|
type RtGenMsg struct {
|
|
unix.RtGenmsg
|
|
}
|
|
|
|
func NewRtGenMsg() *RtGenMsg {
|
|
return &RtGenMsg{
|
|
RtGenmsg: unix.RtGenmsg{
|
|
Family: unix.AF_UNSPEC,
|
|
},
|
|
}
|
|
}
|
|
|
|
func (msg *RtGenMsg) Len() int {
|
|
return rtaAlignOf(unix.SizeofRtGenmsg)
|
|
}
|
|
|
|
func DeserializeRtGenMsg(b []byte) *RtGenMsg {
|
|
return &RtGenMsg{RtGenmsg: unix.RtGenmsg{Family: b[0]}}
|
|
}
|
|
|
|
func (msg *RtGenMsg) Serialize() []byte {
|
|
out := make([]byte, msg.Len())
|
|
out[0] = msg.Family
|
|
return out
|
|
}
|