blob: 77e7ad5bed76bec1b5f3d3d0fa75d6e5db04821a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
|
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build darwin dragonfly freebsd netbsd openbsd
package ipv4
import (
"net"
"syscall"
"unsafe"
"golang.org/x/net/internal/iana"
"golang.org/x/net/internal/socket"
)
func marshalDst(b []byte, cm *ControlMessage) []byte {
m := socket.ControlMessage(b)
m.MarshalHeader(iana.ProtocolIP, sysIP_RECVDSTADDR, net.IPv4len)
return m.Next(net.IPv4len)
}
func parseDst(cm *ControlMessage, b []byte) {
if len(cm.Dst) < net.IPv4len {
cm.Dst = make(net.IP, net.IPv4len)
}
copy(cm.Dst, b[:net.IPv4len])
}
func marshalInterface(b []byte, cm *ControlMessage) []byte {
m := socket.ControlMessage(b)
m.MarshalHeader(iana.ProtocolIP, sysIP_RECVIF, syscall.SizeofSockaddrDatalink)
return m.Next(syscall.SizeofSockaddrDatalink)
}
func parseInterface(cm *ControlMessage, b []byte) {
sadl := (*syscall.SockaddrDatalink)(unsafe.Pointer(&b[0]))
cm.IfIndex = int(sadl.Index)
}
|
