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// 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,
}
}
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