// Copyright 2016 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. package route import "unsafe" func (typ RIBType) parseable() bool { switch typ { case sysNET_RT_STATS, sysNET_RT_TABLE: return false default: return true } } // A RouteMetrics represents route metrics. type RouteMetrics struct { PathMTU int // path maximum transmission unit } // SysType implements the SysType method of Sys interface. func (rmx *RouteMetrics) SysType() SysType { return SysMetrics } // Sys implements the Sys method of Message interface. func (m *RouteMessage) Sys() []Sys { return []Sys{ &RouteMetrics{ PathMTU: int(nativeEndian.Uint32(m.raw[60:64])), }, } } // A InterfaceMetrics represents interface metrics. type InterfaceMetrics struct { Type int // interface type MTU int // maximum transmission unit } // SysType implements the SysType method of Sys interface. func (imx *InterfaceMetrics) SysType() SysType { return SysMetrics } // Sys implements the Sys method of Message interface. func (m *InterfaceMessage) Sys() []Sys { return []Sys{ &InterfaceMetrics{ Type: int(m.raw[24]), MTU: int(nativeEndian.Uint32(m.raw[28:32])), }, } } func probeRoutingStack() (int, map[int]parseFn) { var p uintptr nooff := &wireFormat{extOff: -1, bodyOff: -1} return int(unsafe.Sizeof(p)), map[int]parseFn{ sysRTM_ADD: nooff.parseRouteMessage, sysRTM_DELETE: nooff.parseRouteMessage, sysRTM_CHANGE: nooff.parseRouteMessage, sysRTM_GET: nooff.parseRouteMessage, sysRTM_LOSING: nooff.parseRouteMessage, sysRTM_REDIRECT: nooff.parseRouteMessage, sysRTM_MISS: nooff.parseRouteMessage, sysRTM_LOCK: nooff.parseRouteMessage, sysRTM_RESOLVE: nooff.parseRouteMessage, sysRTM_NEWADDR: nooff.parseInterfaceAddrMessage, sysRTM_DELADDR: nooff.parseInterfaceAddrMessage, sysRTM_IFINFO: nooff.parseInterfaceMessage, sysRTM_IFANNOUNCE: nooff.parseInterfaceAnnounceMessage, } }