73 lines
2 KiB
Go
73 lines
2 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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import "unsafe"
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func (typ RIBType) parseable() bool {
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switch typ {
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case sysNET_RT_STATS, sysNET_RT_TABLE:
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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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// A 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[60:64])),
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},
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}
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}
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// A 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[24]),
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MTU: int(nativeEndian.Uint32(m.raw[28:32])),
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},
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}
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}
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func probeRoutingStack() (int, map[int]parseFn) {
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var p uintptr
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nooff := &wireFormat{extOff: -1, bodyOff: -1}
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return int(unsafe.Sizeof(p)), map[int]parseFn{
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sysRTM_ADD: nooff.parseRouteMessage,
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sysRTM_DELETE: nooff.parseRouteMessage,
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sysRTM_CHANGE: nooff.parseRouteMessage,
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sysRTM_GET: nooff.parseRouteMessage,
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sysRTM_LOSING: nooff.parseRouteMessage,
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sysRTM_REDIRECT: nooff.parseRouteMessage,
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sysRTM_MISS: nooff.parseRouteMessage,
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sysRTM_LOCK: nooff.parseRouteMessage,
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sysRTM_RESOLVE: nooff.parseRouteMessage,
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sysRTM_NEWADDR: nooff.parseInterfaceAddrMessage,
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sysRTM_DELADDR: nooff.parseInterfaceAddrMessage,
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sysRTM_IFINFO: nooff.parseInterfaceMessage,
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sysRTM_IFANNOUNCE: nooff.parseInterfaceAnnounceMessage,
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}
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}
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