72 lines
2.1 KiB
Go
72 lines
2.1 KiB
Go
// Copyright 2016 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package route
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func (typ RIBType) parseable() bool { return true }
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// RouteMetrics represents route metrics.
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type RouteMetrics struct {
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PathMTU int // path maximum transmission unit
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}
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// SysType implements the SysType method of Sys interface.
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func (rmx *RouteMetrics) SysType() SysType { return SysMetrics }
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// Sys implements the Sys method of Message interface.
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func (m *RouteMessage) Sys() []Sys {
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return []Sys{
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&RouteMetrics{
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PathMTU: int(nativeEndian.Uint64(m.raw[m.extOff+8 : m.extOff+16])),
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},
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}
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}
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// RouteMetrics represents route metrics.
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type InterfaceMetrics struct {
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Type int // interface type
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MTU int // maximum transmission unit
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}
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// SysType implements the SysType method of Sys interface.
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func (imx *InterfaceMetrics) SysType() SysType { return SysMetrics }
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// Sys implements the Sys method of Message interface.
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func (m *InterfaceMessage) Sys() []Sys {
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return []Sys{
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&InterfaceMetrics{
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Type: int(m.raw[m.extOff]),
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MTU: int(nativeEndian.Uint32(m.raw[m.extOff+8 : m.extOff+12])),
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},
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}
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}
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func probeRoutingStack() (int, map[int]*wireFormat) {
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rtm := &wireFormat{extOff: 40, bodyOff: sizeofRtMsghdrNetBSD7}
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rtm.parse = rtm.parseRouteMessage
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ifm := &wireFormat{extOff: 16, bodyOff: sizeofIfMsghdrNetBSD7}
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ifm.parse = ifm.parseInterfaceMessage
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ifam := &wireFormat{extOff: sizeofIfaMsghdrNetBSD7, bodyOff: sizeofIfaMsghdrNetBSD7}
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ifam.parse = ifam.parseInterfaceAddrMessage
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ifanm := &wireFormat{extOff: sizeofIfAnnouncemsghdrNetBSD7, bodyOff: sizeofIfAnnouncemsghdrNetBSD7}
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ifanm.parse = ifanm.parseInterfaceAnnounceMessage
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// NetBSD 6 and above kernels require 64-bit aligned access to
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// routing facilities.
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return 8, map[int]*wireFormat{
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sysRTM_ADD: rtm,
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sysRTM_DELETE: rtm,
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sysRTM_CHANGE: rtm,
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sysRTM_GET: rtm,
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sysRTM_LOSING: rtm,
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sysRTM_REDIRECT: rtm,
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sysRTM_MISS: rtm,
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sysRTM_LOCK: rtm,
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sysRTM_RESOLVE: rtm,
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sysRTM_NEWADDR: ifam,
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sysRTM_DELADDR: ifam,
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sysRTM_IFANNOUNCE: ifanm,
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sysRTM_IFINFO: ifm,
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}
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}
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