File: route_freebsd_32bit.go

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// Copyright 2014 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 freebsd,386 freebsd,arm

package syscall

import "unsafe"

func (any *anyMessage) parseInterfaceMessage(b []byte) *InterfaceMessage {
	p := (*InterfaceMessage)(unsafe.Pointer(any))
	// FreeBSD 10 and beyond have a restructured mbuf
	// packet header view.
	// See http://svnweb.freebsd.org/base?view=revision&revision=254804.
	if freebsdVersion >= 1000000 {
		m := (*ifMsghdr)(unsafe.Pointer(any))
		p.Header.Data.Hwassist = uint32(m.Data.Hwassist)
		p.Header.Data.Epoch = m.Data.Epoch
		p.Header.Data.Lastchange = m.Data.Lastchange
		return &InterfaceMessage{Header: p.Header, Data: b[sizeofIfMsghdr:any.Msglen]}
	}
	return &InterfaceMessage{Header: p.Header, Data: b[SizeofIfMsghdr:any.Msglen]}
}