Source file src/vendor/golang.org/x/net/route/sys_openbsd.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	import "unsafe"
     8	
     9	func (typ RIBType) parseable() bool {
    10		switch typ {
    11		case sysNET_RT_STATS, sysNET_RT_TABLE:
    12			return false
    13		default:
    14			return true
    15		}
    16	}
    17	
    18	// RouteMetrics represents route metrics.
    19	type RouteMetrics struct {
    20		PathMTU int // path maximum transmission unit
    21	}
    22	
    23	// SysType implements the SysType method of Sys interface.
    24	func (rmx *RouteMetrics) SysType() SysType { return SysMetrics }
    25	
    26	// Sys implements the Sys method of Message interface.
    27	func (m *RouteMessage) Sys() []Sys {
    28		return []Sys{
    29			&RouteMetrics{
    30				PathMTU: int(nativeEndian.Uint32(m.raw[60:64])),
    31			},
    32		}
    33	}
    34	
    35	// InterfaceMetrics represents interface metrics.
    36	type InterfaceMetrics struct {
    37		Type int // interface type
    38		MTU  int // maximum transmission unit
    39	}
    40	
    41	// SysType implements the SysType method of Sys interface.
    42	func (imx *InterfaceMetrics) SysType() SysType { return SysMetrics }
    43	
    44	// Sys implements the Sys method of Message interface.
    45	func (m *InterfaceMessage) Sys() []Sys {
    46		return []Sys{
    47			&InterfaceMetrics{
    48				Type: int(m.raw[24]),
    49				MTU:  int(nativeEndian.Uint32(m.raw[28:32])),
    50			},
    51		}
    52	}
    53	
    54	func probeRoutingStack() (int, map[int]*wireFormat) {
    55		var p uintptr
    56		rtm := &wireFormat{extOff: -1, bodyOff: -1}
    57		rtm.parse = rtm.parseRouteMessage
    58		ifm := &wireFormat{extOff: -1, bodyOff: -1}
    59		ifm.parse = ifm.parseInterfaceMessage
    60		ifam := &wireFormat{extOff: -1, bodyOff: -1}
    61		ifam.parse = ifam.parseInterfaceAddrMessage
    62		ifanm := &wireFormat{extOff: -1, bodyOff: -1}
    63		ifanm.parse = ifanm.parseInterfaceAnnounceMessage
    64		return int(unsafe.Sizeof(p)), map[int]*wireFormat{
    65			sysRTM_ADD:        rtm,
    66			sysRTM_DELETE:     rtm,
    67			sysRTM_CHANGE:     rtm,
    68			sysRTM_GET:        rtm,
    69			sysRTM_LOSING:     rtm,
    70			sysRTM_REDIRECT:   rtm,
    71			sysRTM_MISS:       rtm,
    72			sysRTM_LOCK:       rtm,
    73			sysRTM_RESOLVE:    rtm,
    74			sysRTM_NEWADDR:    ifam,
    75			sysRTM_DELADDR:    ifam,
    76			sysRTM_IFINFO:     ifm,
    77			sysRTM_IFANNOUNCE: ifanm,
    78			sysRTM_DESYNC:     rtm,
    79		}
    80	}
    81	

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