88 lines
2.7 KiB
Go
88 lines
2.7 KiB
Go
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// 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 {
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switch typ {
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case sysNET_RT_STAT, sysNET_RT_TRASH:
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return false
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default:
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return true
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}
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}
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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.Uint32(m.raw[m.extOff+4 : m.extOff+8])),
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},
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}
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}
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// InterfaceMetrics represents interface 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: 36, bodyOff: sizeofRtMsghdrDarwin15}
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rtm.parse = rtm.parseRouteMessage
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rtm2 := &wireFormat{extOff: 36, bodyOff: sizeofRtMsghdr2Darwin15}
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rtm2.parse = rtm2.parseRouteMessage
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ifm := &wireFormat{extOff: 16, bodyOff: sizeofIfMsghdrDarwin15}
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ifm.parse = ifm.parseInterfaceMessage
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ifm2 := &wireFormat{extOff: 32, bodyOff: sizeofIfMsghdr2Darwin15}
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ifm2.parse = ifm2.parseInterfaceMessage
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ifam := &wireFormat{extOff: sizeofIfaMsghdrDarwin15, bodyOff: sizeofIfaMsghdrDarwin15}
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ifam.parse = ifam.parseInterfaceAddrMessage
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ifmam := &wireFormat{extOff: sizeofIfmaMsghdrDarwin15, bodyOff: sizeofIfmaMsghdrDarwin15}
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ifmam.parse = ifmam.parseInterfaceMulticastAddrMessage
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ifmam2 := &wireFormat{extOff: sizeofIfmaMsghdr2Darwin15, bodyOff: sizeofIfmaMsghdr2Darwin15}
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ifmam2.parse = ifmam2.parseInterfaceMulticastAddrMessage
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// Darwin kernels require 32-bit aligned access to routing facilities.
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return 4, 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_IFINFO: ifm,
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sysRTM_NEWMADDR: ifmam,
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sysRTM_DELMADDR: ifmam,
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sysRTM_IFINFO2: ifm2,
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sysRTM_NEWMADDR2: ifmam2,
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sysRTM_GET2: rtm2,
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}
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}
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