80 lines
2.7 KiB
Go
80 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
|
|
|
|
func (typ RIBType) parseable() bool {
|
|
switch typ {
|
|
case sysNET_RT_STAT, sysNET_RT_TRASH:
|
|
return false
|
|
default:
|
|
return true
|
|
}
|
|
}
|
|
|
|
// A 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.Uint32(m.raw[m.extOff+4 : m.extOff+8])),
|
|
},
|
|
}
|
|
}
|
|
|
|
// A 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]parseFn) {
|
|
rtm := &wireFormat{extOff: 36, bodyOff: sizeofRtMsghdrDarwin15}
|
|
rtm2 := &wireFormat{extOff: 36, bodyOff: sizeofRtMsghdr2Darwin15}
|
|
ifm := &wireFormat{extOff: 16, bodyOff: sizeofIfMsghdrDarwin15}
|
|
ifm2 := &wireFormat{extOff: 32, bodyOff: sizeofIfMsghdr2Darwin15}
|
|
ifam := &wireFormat{extOff: sizeofIfaMsghdrDarwin15, bodyOff: sizeofIfaMsghdrDarwin15}
|
|
ifmam := &wireFormat{extOff: sizeofIfmaMsghdrDarwin15, bodyOff: sizeofIfmaMsghdrDarwin15}
|
|
ifmam2 := &wireFormat{extOff: sizeofIfmaMsghdr2Darwin15, bodyOff: sizeofIfmaMsghdr2Darwin15}
|
|
// Darwin kernels require 32-bit aligned access to routing facilities.
|
|
return 4, map[int]parseFn{
|
|
sysRTM_ADD: rtm.parseRouteMessage,
|
|
sysRTM_DELETE: rtm.parseRouteMessage,
|
|
sysRTM_CHANGE: rtm.parseRouteMessage,
|
|
sysRTM_GET: rtm.parseRouteMessage,
|
|
sysRTM_LOSING: rtm.parseRouteMessage,
|
|
sysRTM_REDIRECT: rtm.parseRouteMessage,
|
|
sysRTM_MISS: rtm.parseRouteMessage,
|
|
sysRTM_LOCK: rtm.parseRouteMessage,
|
|
sysRTM_RESOLVE: rtm.parseRouteMessage,
|
|
sysRTM_NEWADDR: ifam.parseInterfaceAddrMessage,
|
|
sysRTM_DELADDR: ifam.parseInterfaceAddrMessage,
|
|
sysRTM_IFINFO: ifm.parseInterfaceMessage,
|
|
sysRTM_NEWMADDR: ifmam.parseInterfaceMulticastAddrMessage,
|
|
sysRTM_DELMADDR: ifmam.parseInterfaceMulticastAddrMessage,
|
|
sysRTM_IFINFO2: ifm2.parseInterfaceMessage,
|
|
sysRTM_NEWMADDR2: ifmam2.parseInterfaceMulticastAddrMessage,
|
|
sysRTM_GET2: rtm2.parseRouteMessage,
|
|
}
|
|
}
|