79 lines
2 KiB
Go
79 lines
2 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 "unsafe"
|
|
|
|
func (typ RIBType) parseable() bool {
|
|
switch typ {
|
|
case sysNET_RT_STATS, sysNET_RT_TABLE:
|
|
return false
|
|
default:
|
|
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.Uint32(m.raw[60:64])),
|
|
},
|
|
}
|
|
}
|
|
|
|
// 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[24]),
|
|
MTU: int(nativeEndian.Uint32(m.raw[28:32])),
|
|
},
|
|
}
|
|
}
|
|
|
|
func probeRoutingStack() (int, map[int]*wireFormat) {
|
|
var p uintptr
|
|
rtm := &wireFormat{extOff: -1, bodyOff: -1}
|
|
rtm.parse = rtm.parseRouteMessage
|
|
ifm := &wireFormat{extOff: -1, bodyOff: -1}
|
|
ifm.parse = ifm.parseInterfaceMessage
|
|
ifam := &wireFormat{extOff: -1, bodyOff: -1}
|
|
ifam.parse = ifam.parseInterfaceAddrMessage
|
|
ifanm := &wireFormat{extOff: -1, bodyOff: -1}
|
|
ifanm.parse = ifanm.parseInterfaceAnnounceMessage
|
|
return int(unsafe.Sizeof(p)), map[int]*wireFormat{
|
|
sysRTM_ADD: rtm,
|
|
sysRTM_DELETE: rtm,
|
|
sysRTM_CHANGE: rtm,
|
|
sysRTM_GET: rtm,
|
|
sysRTM_LOSING: rtm,
|
|
sysRTM_REDIRECT: rtm,
|
|
sysRTM_MISS: rtm,
|
|
sysRTM_LOCK: rtm,
|
|
sysRTM_RESOLVE: rtm,
|
|
sysRTM_NEWADDR: ifam,
|
|
sysRTM_DELADDR: ifam,
|
|
sysRTM_IFINFO: ifm,
|
|
sysRTM_IFANNOUNCE: ifanm,
|
|
}
|
|
}
|