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syscall: add support for FreeBSD 10

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This CL tweaks syscall.InterfaceMessage to support FreeBSD 10 and
prior to 10.

See http://svnweb.freebsd.org/base?view=revision&revision=254804.

Fixes #7193.

LGTM=iant
R=golang-codereviews, rsc, minux.ma, gobot, iant
CC=golang-codereviews
https://golang.org/cl/56980043
This commit is contained in:
Mikio Hara 2014-03-04 09:26:56 +09:00
parent d30d42915a
commit 25668b9b34
3 changed files with 46 additions and 2 deletions
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10
src/pkg/syscall/route_freebsd.go
View File

@ -8,14 +8,20 @@ package syscall
import "unsafe"
// See http://www.freebsd.org/doc/en/books/porters-handbook/freebsd-versions.html.
var freebsdVersion uint32
func init() {
freebsdVersion, _ = SysctlUint32("kern.osreldate")
}
func (any *anyMessage) toRoutingMessage(b []byte) RoutingMessage {
switch any.Type {
case RTM_ADD, RTM_DELETE, RTM_CHANGE, RTM_GET, RTM_LOSING, RTM_REDIRECT, RTM_MISS, RTM_LOCK, RTM_RESOLVE:
p := (*RouteMessage)(unsafe.Pointer(any))
return &RouteMessage{Header: p.Header, Data: b[SizeofRtMsghdr:any.Msglen]}
case RTM_IFINFO:
p := (*InterfaceMessage)(unsafe.Pointer(any))
return &InterfaceMessage{Header: p.Header, Data: b[SizeofIfMsghdr:any.Msglen]}
return any.parseInterfaceMessage(b)
case RTM_IFANNOUNCE:
p := (*InterfaceAnnounceMessage)(unsafe.Pointer(any))
return &InterfaceAnnounceMessage{Header: p.Header}

24
src/pkg/syscall/route_freebsd_32bit.go Normal file
View File

@ -0,0 +1,24 @@
// 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]}
}

14
src/pkg/syscall/route_freebsd_64bit.go Normal file
View File

@ -0,0 +1,14 @@
// 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,amd64
package syscall
import "unsafe"
func (any *anyMessage) parseInterfaceMessage(b []byte) *InterfaceMessage {
p := (*InterfaceMessage)(unsafe.Pointer(any))
return &InterfaceMessage{Header: p.Header, Data: b[SizeofIfMsghdr:any.Msglen]}
}