コード例 #1
0
ファイル: zclient.go プロジェクト: osrg/gobgp
func newIPRouteMessage(dst []*table.Path, version uint8, vrfId uint16) *zebra.Message {
	paths := make([]*table.Path, 0, len(dst))
	for _, path := range dst {
		if path == nil || path.IsFromExternal() {
			continue
		}
		paths = append(paths, path)
	}
	if len(paths) == 0 {
		return nil
	}
	path := paths[0]

	l := strings.SplitN(path.GetNlri().String(), "/", 2)
	var command zebra.API_TYPE
	var prefix net.IP
	nexthops := make([]net.IP, 0, len(paths))
	switch path.GetRouteFamily() {
	case bgp.RF_IPv4_UC, bgp.RF_IPv4_VPN:
		if path.IsWithdraw == true {
			command = zebra.IPV4_ROUTE_DELETE
		} else {
			command = zebra.IPV4_ROUTE_ADD
		}
		if path.GetRouteFamily() == bgp.RF_IPv4_UC {
			prefix = path.GetNlri().(*bgp.IPAddrPrefix).IPAddrPrefixDefault.Prefix.To4()
		} else {
			prefix = path.GetNlri().(*bgp.LabeledVPNIPAddrPrefix).IPAddrPrefixDefault.Prefix.To4()
		}
		for _, p := range paths {
			nexthops = append(nexthops, p.GetNexthop().To4())
		}
	case bgp.RF_IPv6_UC, bgp.RF_IPv6_VPN:
		if path.IsWithdraw == true {
			command = zebra.IPV6_ROUTE_DELETE
		} else {
			command = zebra.IPV6_ROUTE_ADD
		}
		if path.GetRouteFamily() == bgp.RF_IPv6_UC {
			prefix = path.GetNlri().(*bgp.IPv6AddrPrefix).IPAddrPrefixDefault.Prefix.To16()
		} else {
			prefix = path.GetNlri().(*bgp.LabeledVPNIPv6AddrPrefix).IPAddrPrefixDefault.Prefix.To16()
		}
		for _, p := range paths {
			nexthops = append(nexthops, p.GetNexthop().To16())
		}
	default:
		return nil
	}
	flags := uint8(zebra.MESSAGE_NEXTHOP)
	plen, _ := strconv.Atoi(l[1])
	med, err := path.GetMed()
	if err == nil {
		flags |= zebra.MESSAGE_METRIC
	}
	return &zebra.Message{
		Header: zebra.Header{
			Len:     zebra.HeaderSize(version),
			Marker:  zebra.HEADER_MARKER,
			Version: version,
			Command: command,
			VrfId:   vrfId,
		},
		Body: &zebra.IPRouteBody{
			Type:         zebra.ROUTE_BGP,
			SAFI:         zebra.SAFI_UNICAST,
			Message:      flags,
			Prefix:       prefix,
			PrefixLength: uint8(plen),
			Nexthops:     nexthops,
			Metric:       med,
		},
	}
}
コード例 #2
0
ファイル: zclient_test.go プロジェクト: osrg/gobgp
func Test_createRequestFromIPRouteMessage(t *testing.T) {
	assert := assert.New(t)

	m := &zebra.Message{}
	h := &zebra.Header{
		Len:     zebra.HeaderSize(2),
		Marker:  zebra.HEADER_MARKER,
		Version: 2,
		Command: zebra.IPV4_ROUTE_ADD,
	}

	b := &zebra.IPRouteBody{
		Type:         zebra.ROUTE_TYPE(zebra.ROUTE_STATIC),
		Flags:        zebra.FLAG(zebra.FLAG_SELECTED),
		Message:      zebra.MESSAGE_NEXTHOP | zebra.MESSAGE_DISTANCE | zebra.MESSAGE_METRIC,
		SAFI:         zebra.SAFI(zebra.SAFI_UNICAST),
		Prefix:       net.ParseIP("192.168.100.0"),
		PrefixLength: uint8(24),
		Nexthops:     []net.IP{net.ParseIP("0.0.0.0")},
		Ifindexs:     []uint32{1},
		Distance:     uint8(0),
		Metric:       uint32(100),
		Api:          zebra.API_TYPE(zebra.IPV4_ROUTE_ADD),
	}

	m.Header = *h
	m.Body = b

	path := createPathFromIPRouteMessage(m)
	pp := table.NewPath(nil, path.GetNlri(), path.IsWithdraw, path.GetPathAttrs(), time.Now(), false)
	pp.SetIsFromExternal(path.IsFromExternal())
	assert.Equal("0.0.0.0", pp.GetNexthop().String())
	assert.Equal("192.168.100.0/24", pp.GetNlri().String())
	assert.True(pp.IsFromExternal())
	assert.False(pp.IsWithdraw)

	// withdraw
	h.Command = zebra.IPV4_ROUTE_DELETE
	m.Header = *h
	path = createPathFromIPRouteMessage(m)
	pp = table.NewPath(nil, path.GetNlri(), path.IsWithdraw, path.GetPathAttrs(), time.Now(), false)
	pp.SetIsFromExternal(path.IsFromExternal())
	assert.Equal("0.0.0.0", pp.GetNexthop().String())
	assert.Equal("192.168.100.0/24", pp.GetNlri().String())
	med, _ := pp.GetMed()
	assert.Equal(uint32(100), med)
	assert.True(pp.IsFromExternal())
	assert.True(pp.IsWithdraw)

	// IPv6
	h.Command = zebra.IPV6_ROUTE_ADD
	b.Prefix = net.ParseIP("2001:db8:0:f101::")
	b.PrefixLength = uint8(64)
	b.Nexthops = []net.IP{net.ParseIP("::")}
	m.Header = *h
	m.Body = b

	path = createPathFromIPRouteMessage(m)
	pp = table.NewPath(nil, path.GetNlri(), path.IsWithdraw, path.GetPathAttrs(), time.Now(), false)
	pp.SetIsFromExternal(path.IsFromExternal())
	assert.Equal("::", pp.GetNexthop().String())
	assert.Equal("2001:db8:0:f101::/64", pp.GetNlri().String())
	med, _ = pp.GetMed()
	assert.Equal(uint32(100), med)
	assert.True(pp.IsFromExternal())
	assert.False(pp.IsWithdraw)

	// withdraw
	h.Command = zebra.IPV6_ROUTE_DELETE
	m.Header = *h
	path = createPathFromIPRouteMessage(m)
	pp = table.NewPath(nil, path.GetNlri(), path.IsWithdraw, path.GetPathAttrs(), time.Now(), false)
	pp.SetIsFromExternal(path.IsFromExternal())
	assert.Equal("::", pp.GetNexthop().String())
	assert.Equal("2001:db8:0:f101::/64", pp.GetNlri().String())
	assert.True(pp.IsFromExternal())
	assert.True(pp.IsWithdraw)
}