Source file src/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	}
    72	

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