89 lines
2.7 KiB
Go
89 lines
2.7 KiB
Go
// Copyright 2016 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.
|
|
|
|
package route
|
|
|
|
import (
|
|
"syscall"
|
|
"unsafe"
|
|
)
|
|
|
|
func (typ RIBType) parseable() bool { return true }
|
|
|
|
// RouteMetrics represents route metrics.
|
|
type RouteMetrics struct {
|
|
PathMTU int // path maximum transmission unit
|
|
}
|
|
|
|
// SysType implements the SysType method of Sys interface.
|
|
func (rmx *RouteMetrics) SysType() SysType { return SysMetrics }
|
|
|
|
// Sys implements the Sys method of Message interface.
|
|
func (m *RouteMessage) Sys() []Sys {
|
|
return []Sys{
|
|
&RouteMetrics{
|
|
PathMTU: int(nativeEndian.Uint64(m.raw[m.extOff+8 : m.extOff+16])),
|
|
},
|
|
}
|
|
}
|
|
|
|
// InterfaceMetrics represents interface metrics.
|
|
type InterfaceMetrics struct {
|
|
Type int // interface type
|
|
MTU int // maximum transmission unit
|
|
}
|
|
|
|
// SysType implements the SysType method of Sys interface.
|
|
func (imx *InterfaceMetrics) SysType() SysType { return SysMetrics }
|
|
|
|
// Sys implements the Sys method of Message interface.
|
|
func (m *InterfaceMessage) Sys() []Sys {
|
|
return []Sys{
|
|
&InterfaceMetrics{
|
|
Type: int(m.raw[m.extOff]),
|
|
MTU: int(nativeEndian.Uint32(m.raw[m.extOff+8 : m.extOff+12])),
|
|
},
|
|
}
|
|
}
|
|
|
|
func probeRoutingStack() (int, map[int]*wireFormat) {
|
|
var p uintptr
|
|
rtm := &wireFormat{extOff: 40, bodyOff: sizeofRtMsghdrDragonFlyBSD4}
|
|
rtm.parse = rtm.parseRouteMessage
|
|
ifm := &wireFormat{extOff: 16, bodyOff: sizeofIfMsghdrDragonFlyBSD4}
|
|
ifm.parse = ifm.parseInterfaceMessage
|
|
ifam := &wireFormat{extOff: sizeofIfaMsghdrDragonFlyBSD4, bodyOff: sizeofIfaMsghdrDragonFlyBSD4}
|
|
ifam.parse = ifam.parseInterfaceAddrMessage
|
|
ifmam := &wireFormat{extOff: sizeofIfmaMsghdrDragonFlyBSD4, bodyOff: sizeofIfmaMsghdrDragonFlyBSD4}
|
|
ifmam.parse = ifmam.parseInterfaceMulticastAddrMessage
|
|
ifanm := &wireFormat{extOff: sizeofIfAnnouncemsghdrDragonFlyBSD4, bodyOff: sizeofIfAnnouncemsghdrDragonFlyBSD4}
|
|
ifanm.parse = ifanm.parseInterfaceAnnounceMessage
|
|
|
|
rel, _ := syscall.SysctlUint32("kern.osreldate")
|
|
if rel >= 500705 {
|
|
// https://github.com/DragonFlyBSD/DragonFlyBSD/commit/43a373152df2d405c9940983e584e6a25e76632d
|
|
// but only the size of struct ifa_msghdr actually changed
|
|
rtmVersion = 7
|
|
ifam.bodyOff = sizeofIfaMsghdrDragonFlyBSD58
|
|
}
|
|
|
|
return int(unsafe.Sizeof(p)), map[int]*wireFormat{
|
|
syscall.RTM_ADD: rtm,
|
|
syscall.RTM_DELETE: rtm,
|
|
syscall.RTM_CHANGE: rtm,
|
|
syscall.RTM_GET: rtm,
|
|
syscall.RTM_LOSING: rtm,
|
|
syscall.RTM_REDIRECT: rtm,
|
|
syscall.RTM_MISS: rtm,
|
|
syscall.RTM_LOCK: rtm,
|
|
syscall.RTM_RESOLVE: rtm,
|
|
syscall.RTM_NEWADDR: ifam,
|
|
syscall.RTM_DELADDR: ifam,
|
|
syscall.RTM_IFINFO: ifm,
|
|
syscall.RTM_NEWMADDR: ifmam,
|
|
syscall.RTM_DELMADDR: ifmam,
|
|
syscall.RTM_IFANNOUNCE: ifanm,
|
|
}
|
|
}
|