vendor/golang.org/x/net/route/sys_dragonfly.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 { return true }
  10
  11 // RouteMetrics represents route metrics.
  12 type RouteMetrics struct {
  13         PathMTU int // path maximum transmission unit
  14 }
  15
  16 // SysType implements the SysType method of Sys interface.
  17 func (rmx *RouteMetrics) SysType() SysType { return SysMetrics }
  18
  19 // Sys implements the Sys method of Message interface.
  20 func (m *RouteMessage) Sys() []Sys {
  21         return []Sys{
  22                 &RouteMetrics{
  23                         PathMTU: int(nativeEndian.Uint64(m.raw[m.extOff+8 : m.extOff+16])),
  24                 },
  25         }
  26 }
  27
  28 // InterfaceMetrics represents interface metrics.
  29 type InterfaceMetrics struct {
  30         Type int // interface type
  31         MTU  int // maximum transmission unit
  32 }
  33
  34 // SysType implements the SysType method of Sys interface.
  35 func (imx *InterfaceMetrics) SysType() SysType { return SysMetrics }
  36
  37 // Sys implements the Sys method of Message interface.
  38 func (m *InterfaceMessage) Sys() []Sys {
  39         return []Sys{
  40                 &InterfaceMetrics{
  41                         Type: int(m.raw[m.extOff]),
  42                         MTU:  int(nativeEndian.Uint32(m.raw[m.extOff+8 : m.extOff+12])),
  43                 },
  44         }
  45 }
  46
  47 func probeRoutingStack() (int, map[int]*wireFormat) {
  48         var p uintptr
  49         rtm := &wireFormat{extOff: 40, bodyOff: sizeofRtMsghdrDragonFlyBSD4}
  50         rtm.parse = rtm.parseRouteMessage
  51         ifm := &wireFormat{extOff: 16, bodyOff: sizeofIfMsghdrDragonFlyBSD4}
  52         ifm.parse = ifm.parseInterfaceMessage
  53         ifam := &wireFormat{extOff: sizeofIfaMsghdrDragonFlyBSD4, bodyOff: sizeofIfaMsghdrDragonFlyBSD4}
  54         ifam.parse = ifam.parseInterfaceAddrMessage
  55         ifmam := &wireFormat{extOff: sizeofIfmaMsghdrDragonFlyBSD4, bodyOff: sizeofIfmaMsghdrDragonFlyBSD4}
  56         ifmam.parse = ifmam.parseInterfaceMulticastAddrMessage
  57         ifanm := &wireFormat{extOff: sizeofIfAnnouncemsghdrDragonFlyBSD4, bodyOff: sizeofIfAnnouncemsghdrDragonFlyBSD4}
  58         ifanm.parse = ifanm.parseInterfaceAnnounceMessage
  59         return int(unsafe.Sizeof(p)), map[int]*wireFormat{
  60                 sysRTM_ADD:        rtm,
  61                 sysRTM_DELETE:     rtm,
  62                 sysRTM_CHANGE:     rtm,
  63                 sysRTM_GET:        rtm,
  64                 sysRTM_LOSING:     rtm,
  65                 sysRTM_REDIRECT:   rtm,
  66                 sysRTM_MISS:       rtm,
  67                 sysRTM_LOCK:       rtm,
  68                 sysRTM_RESOLVE:    rtm,
  69                 sysRTM_NEWADDR:    ifam,
  70                 sysRTM_DELADDR:    ifam,
  71                 sysRTM_IFINFO:     ifm,
  72                 sysRTM_NEWMADDR:   ifmam,
  73                 sysRTM_DELMADDR:   ifmam,
  74                 sysRTM_IFANNOUNCE: ifanm,
  75         }
  76 }