vendor/golang.org/x/net/route/sys_openbsd.go

   1 // Copyright 2016 The Go Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 package route
   6
   7 import "unsafe"
   8
   9 func (typ RIBType) parseable() bool {
  10         switch typ {
  11         case sysNET_RT_STATS, sysNET_RT_TABLE:
  12                 return false
  13         default:
  14                 return true
  15         }
  16 }
  17
  18 // RouteMetrics represents route metrics.
  19 type RouteMetrics struct {
  20         PathMTU int // path maximum transmission unit
  21 }
  22
  23 // SysType implements the SysType method of Sys interface.
  24 func (rmx *RouteMetrics) SysType() SysType { return SysMetrics }
  25
  26 // Sys implements the Sys method of Message interface.
  27 func (m *RouteMessage) Sys() []Sys {
  28         return []Sys{
  29                 &RouteMetrics{
  30                         PathMTU: int(nativeEndian.Uint32(m.raw[60:64])),
  31                 },
  32         }
  33 }
  34
  35 // InterfaceMetrics represents interface metrics.
  36 type InterfaceMetrics struct {
  37         Type int // interface type
  38         MTU  int // maximum transmission unit
  39 }
  40
  41 // SysType implements the SysType method of Sys interface.
  42 func (imx *InterfaceMetrics) SysType() SysType { return SysMetrics }
  43
  44 // Sys implements the Sys method of Message interface.
  45 func (m *InterfaceMessage) Sys() []Sys {
  46         return []Sys{
  47                 &InterfaceMetrics{
  48                         Type: int(m.raw[24]),
  49                         MTU:  int(nativeEndian.Uint32(m.raw[28:32])),
  50                 },
  51         }
  52 }
  53
  54 func probeRoutingStack() (int, map[int]*wireFormat) {
  55         var p uintptr
  56         rtm := &wireFormat{extOff: -1, bodyOff: -1}
  57         rtm.parse = rtm.parseRouteMessage
  58         ifm := &wireFormat{extOff: -1, bodyOff: -1}
  59         ifm.parse = ifm.parseInterfaceMessage
  60         ifam := &wireFormat{extOff: -1, bodyOff: -1}
  61         ifam.parse = ifam.parseInterfaceAddrMessage
  62         ifanm := &wireFormat{extOff: -1, bodyOff: -1}
  63         ifanm.parse = ifanm.parseInterfaceAnnounceMessage
  64         return int(unsafe.Sizeof(p)), map[int]*wireFormat{
  65                 sysRTM_ADD:        rtm,
  66                 sysRTM_DELETE:     rtm,
  67                 sysRTM_CHANGE:     rtm,
  68                 sysRTM_GET:        rtm,
  69                 sysRTM_LOSING:     rtm,
  70                 sysRTM_REDIRECT:   rtm,
  71                 sysRTM_MISS:       rtm,
  72                 sysRTM_LOCK:       rtm,
  73                 sysRTM_RESOLVE:    rtm,
  74                 sysRTM_NEWADDR:    ifam,
  75                 sysRTM_DELADDR:    ifam,
  76                 sysRTM_IFINFO:     ifm,
  77                 sysRTM_IFANNOUNCE: ifanm,
  78                 sysRTM_DESYNC:     rtm,
  79         }
  80 }