| // 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 |
| } |
| } |
| |
| // 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[60:64])), |
| }, |
| } |
| } |
| |
| // 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[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, |
| } |
| } |