[SEBA-912] IGMPv3 Support in bbsim
Change-Id: I36bad3213dcff2f910403008467968da16c6e08a
diff --git a/internal/bbsim/responders/igmp/igmp.go b/internal/bbsim/responders/igmp/igmp.go
index e5c1ad2..a57810e 100644
--- a/internal/bbsim/responders/igmp/igmp.go
+++ b/internal/bbsim/responders/igmp/igmp.go
@@ -127,6 +127,89 @@
return nil
}
+func SendIGMPMembershipReportV3(ponPortId uint32, onuId uint32, serialNumber string, portNo uint32, macAddress net.HardwareAddr, stream bbsim.Stream) error {
+ log.WithFields(log.Fields{
+ "OnuId": onuId,
+ "SerialNumber": serialNumber,
+ "PortNo": portNo,
+ }).Debugf("Entered SendIGMPMembershipReportV3")
+ igmp := createIGMPV3MembershipReportPacket()
+ pkt, err := serializeIgmpPacket(ponPortId, onuId, macAddress, igmp)
+
+ if err != nil {
+ log.WithFields(log.Fields{
+ "OnuId": onuId,
+ "IntfId": ponPortId,
+ "SerialNumber": serialNumber,
+ }).Errorf("Seriliazation of igmp packet failed : %s", err)
+ return err
+ }
+
+ gemid, err := omci.GetGemPortId(ponPortId, onuId)
+ if err != nil {
+ log.WithFields(log.Fields{
+ "OnuId": onuId,
+ "IntfId": ponPortId,
+ "SerialNumber": serialNumber,
+ }).Errorf("Can't retrieve GemPortId for IGMP: %s", err)
+ return err
+ }
+
+ data := &openolt.Indication_PktInd{
+ PktInd: &openolt.PacketIndication{
+ IntfType: "pon",
+ IntfId: ponPortId,
+ GemportId: uint32(gemid),
+ Pkt: pkt,
+ PortNo: portNo,
+ },
+ }
+ //Sending IGMP packets
+ if err := stream.Send(&openolt.Indication{Data: data}); err != nil {
+ log.Errorf("Fail to send IGMP PktInd indication for ONU: %s, IntfId: %s, SerialNumber: %s, error: %v", onuId, ponPortId, serialNumber, err)
+ return err
+ }
+ return nil
+}
+
+func createIGMPV3MembershipReportPacket() IGMP {
+
+ groupRecord1:= IGMPv3GroupRecord{
+ Type: IGMPv3GroupRecordType(IGMPIsIn),
+ AuxDataLen: 0, // this should always be 0 as per IGMPv3 spec.
+ NumberOfSources: 3,
+ MulticastAddress: net.IPv4(224, 0, 0, 22),
+ SourceAddresses: []net.IP{net.IPv4(15, 14, 20, 24), net.IPv4(15, 14, 20, 26), net.IPv4(15, 14, 20, 25)},
+ AuxData: 0, // NOT USED
+ }
+
+ groupRecord2:= IGMPv3GroupRecord{
+ Type: IGMPv3GroupRecordType(IGMPIsIn),
+ AuxDataLen: 0, // this should always be 0 as per IGMPv3 spec.
+ NumberOfSources: 2,
+ MulticastAddress: net.IPv4(224, 0, 0, 25),
+ SourceAddresses: []net.IP{net.IPv4(15, 14, 20, 30), net.IPv4(15, 14, 20, 31)},
+ AuxData: 0, // NOT USED
+ }
+
+ igmpDefault := IGMP{
+ Type: 0x22, //IGMPV3 Membership Report
+ MaxResponseTime: time.Duration(1),
+ Checksum: 0,
+ GroupAddress: net.IPv4(224, 0, 0, 22),
+ SupressRouterProcessing: false,
+ RobustnessValue: 0,
+ IntervalTime: time.Duration(1),
+ SourceAddresses: []net.IP{net.IPv4(224, 0, 0, 24)},
+ NumberOfGroupRecords: 2,
+ NumberOfSources: 1,
+ GroupRecords: []IGMPv3GroupRecord{groupRecord1, groupRecord2},
+ Version: 3,
+ }
+
+ return igmpDefault
+}
+
//func serializeIgmpPacket(intfId uint32, onuId uint32, srcMac net.HardwareAddr, igmp *layers.IGMP) ([]byte, error) {
func createIGMPV2MembershipReportPacket() IGMP {
return IGMP{
@@ -207,34 +290,96 @@
SourceAddresses []net.IP
NumberOfGroupRecords uint16
NumberOfSources uint16
+ GroupRecords []IGMPv3GroupRecord
Version uint8 // IGMP protocol version
}
+// IGMPv3GroupRecord stores individual group records for a V3 Membership Report message.
+type IGMPv3GroupRecord struct {
+ Type IGMPv3GroupRecordType
+ AuxDataLen uint8 // this should always be 0 as per IGMPv3 spec.
+ NumberOfSources uint16
+ MulticastAddress net.IP
+ SourceAddresses []net.IP
+ AuxData uint32 // NOT USED
+}
+
+type IGMPv3GroupRecordType uint8
+
+const (
+ IGMPIsIn IGMPv3GroupRecordType = 0x01 // Type MODE_IS_INCLUDE, source addresses x
+ IGMPIsEx IGMPv3GroupRecordType = 0x02 // Type MODE_IS_EXCLUDE, source addresses x
+ IGMPToIn IGMPv3GroupRecordType = 0x03 // Type CHANGE_TO_INCLUDE_MODE, source addresses x
+ IGMPToEx IGMPv3GroupRecordType = 0x04 // Type CHANGE_TO_EXCLUDE_MODE, source addresses x
+ IGMPAllow IGMPv3GroupRecordType = 0x05 // Type ALLOW_NEW_SOURCES, source addresses x
+ IGMPBlock IGMPv3GroupRecordType = 0x06 // Type BLOCK_OLD_SOURCES, source addresses x
+)
+
+func (i IGMPv3GroupRecordType) String() string {
+ switch i {
+ case IGMPIsIn:
+ return "MODE_IS_INCLUDE"
+ case IGMPIsEx:
+ return "MODE_IS_EXCLUDE"
+ case IGMPToIn:
+ return "CHANGE_TO_INCLUDE_MODE"
+ case IGMPToEx:
+ return "CHANGE_TO_EXCLUDE_MODE"
+ case IGMPAllow:
+ return "ALLOW_NEW_SOURCES"
+ case IGMPBlock:
+ return "BLOCK_OLD_SOURCES"
+ default:
+ return ""
+ }
+}
+
// SerializeTo writes the serialized form of this layer into the
// SerializationBuffer, implementing gopacket.SerializableLayer.
// See the docs for gopacket.SerializableLayer for more info.
-// SerializeTo writes the serialized form of this layer into the
-// SerializationBuffer, implementing gopacket.SerializableLayer.
-// See the docs for gopacket.SerializableLayer for more info.
func (igmp IGMP) SerializeTo(b gopacket.SerializeBuffer, opts gopacket.SerializeOptions) error {
- // func (igmp *IGMP) SerializeTo(b gopacket.SerializeBuffer, opts gopacket.SerializeOptions) error {
- log.Debugf("Serializing IGMP Packet")
- //TODO - add length check here
+ log.Debugf("Serializing IGMP Packet")
data, err := b.PrependBytes(8915)
- if err != nil {
- return err
- }
+ if err != nil {
+ return err
+ }
+ if igmp.Version == 2 {
+ data[0] = byte(igmp.Type)
+ data[1] = byte(igmp.MaxResponseTime)
+ data[2] = 0
+ data[3] = 0
+ copy(data[4:8], igmp.GroupAddress.To4())
+ if opts.ComputeChecksums {
+ igmp.Checksum = tcpipChecksum(data, 0)
+ binary.BigEndian.PutUint16(data[2:4], igmp.Checksum)
+ }
+ } else if igmp.Version ==3{
- data[0] = byte(igmp.Type)
- data[1] = byte(igmp.MaxResponseTime)
- data[2] = 0
- data[3] = 0
- copy(data[4:8], igmp.GroupAddress.To4())
- if opts.ComputeChecksums {
- igmp.Checksum = tcpipChecksum(data, 0)
- binary.BigEndian.PutUint16(data[2:4], igmp.Checksum)
- }
- return nil
+ data[0] = byte(igmp.Type)
+ data[1] = 0
+ data[2] = 0
+ data[3] = 0
+ data[4] = 0
+ data[5] = 0
+ binary.BigEndian.PutUint16(data[6:8], igmp.NumberOfGroupRecords)
+ j := 8
+ for i := uint16(0); i < igmp.NumberOfGroupRecords; i++ {
+ data[j] = byte(igmp.GroupRecords[i].Type)
+ data[j+1] = byte(0)
+ binary.BigEndian.PutUint16(data[j+2:j+4], igmp.GroupRecords[i].NumberOfSources)
+ copy(data[j+4:j+8], igmp.GroupRecords[i].MulticastAddress.To4())
+ j=j+8
+ for m := uint16(0); m < igmp.GroupRecords[i].NumberOfSources; m++ {
+ copy(data[j:(j+4)], igmp.GroupRecords[i].SourceAddresses[m].To4())
+ j=j+4
+ }
+ }
+ if opts.ComputeChecksums {
+ igmp.Checksum = tcpipChecksum(data, 0)
+ binary.BigEndian.PutUint16(data[2:4], igmp.Checksum)
+ }
+ }
+ return nil
}
// Calculate the TCP/IP checksum defined in rfc1071. The passed-in csum is any