vendor/golang.org/x/net/route/sys_netbsd.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 func (typ RIBType) parseable() bool { return true }
   8
   9 // RouteMetrics represents route metrics.
  10 type RouteMetrics struct {
  11         PathMTU int // path maximum transmission unit
  12 }
  13
  14 // SysType implements the SysType method of Sys interface.
  15 func (rmx *RouteMetrics) SysType() SysType { return SysMetrics }
  16
  17 // Sys implements the Sys method of Message interface.
  18 func (m *RouteMessage) Sys() []Sys {
  19         return []Sys{
  20                 &RouteMetrics{
  21                         PathMTU: int(nativeEndian.Uint64(m.raw[m.extOff+8 : m.extOff+16])),
  22                 },
  23         }
  24 }
  25
  26 // RouteMetrics represents route metrics.
  27 type InterfaceMetrics struct {
  28         Type int // interface type
  29         MTU  int // maximum transmission unit
  30 }
  31
  32 // SysType implements the SysType method of Sys interface.
  33 func (imx *InterfaceMetrics) SysType() SysType { return SysMetrics }
  34
  35 // Sys implements the Sys method of Message interface.
  36 func (m *InterfaceMessage) Sys() []Sys {
  37         return []Sys{
  38                 &InterfaceMetrics{
  39                         Type: int(m.raw[m.extOff]),
  40                         MTU:  int(nativeEndian.Uint32(m.raw[m.extOff+8 : m.extOff+12])),
  41                 },
  42         }
  43 }
  44
  45 func probeRoutingStack() (int, map[int]*wireFormat) {
  46         rtm := &wireFormat{extOff: 40, bodyOff: sizeofRtMsghdrNetBSD7}
  47         rtm.parse = rtm.parseRouteMessage
  48         ifm := &wireFormat{extOff: 16, bodyOff: sizeofIfMsghdrNetBSD7}
  49         ifm.parse = ifm.parseInterfaceMessage
  50         ifam := &wireFormat{extOff: sizeofIfaMsghdrNetBSD7, bodyOff: sizeofIfaMsghdrNetBSD7}
  51         ifam.parse = ifam.parseInterfaceAddrMessage
  52         ifanm := &wireFormat{extOff: sizeofIfAnnouncemsghdrNetBSD7, bodyOff: sizeofIfAnnouncemsghdrNetBSD7}
  53         ifanm.parse = ifanm.parseInterfaceAnnounceMessage
  54         // NetBSD 6 and above kernels require 64-bit aligned access to
  55         // routing facilities.
  56         return 8, map[int]*wireFormat{
  57                 sysRTM_ADD:        rtm,
  58                 sysRTM_DELETE:     rtm,
  59                 sysRTM_CHANGE:     rtm,
  60                 sysRTM_GET:        rtm,
  61                 sysRTM_LOSING:     rtm,
  62                 sysRTM_REDIRECT:   rtm,
  63                 sysRTM_MISS:       rtm,
  64                 sysRTM_LOCK:       rtm,
  65                 sysRTM_RESOLVE:    rtm,
  66                 sysRTM_NEWADDR:    ifam,
  67                 sysRTM_DELADDR:    ifam,
  68                 sysRTM_IFANNOUNCE: ifanm,
  69                 sysRTM_IFINFO:     ifm,
  70         }
  71 }