| /* |
| Copyright 2020 the original author or authors. |
| |
| Licensed under the Apache License, Version 2.0 (the "License"); |
| you may not use this file except in compliance with the License. |
| You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| */ |
| |
| package openflow |
| |
| import ( |
| "context" |
| "encoding/binary" |
| "encoding/json" |
| ofp "github.com/opencord/goloxi/of13" |
| "github.com/opencord/voltha-lib-go/v4/pkg/log" |
| "github.com/opencord/voltha-protos/v4/go/openflow_13" |
| "github.com/opencord/voltha-protos/v4/go/voltha" |
| "net" |
| ) |
| |
| var oxmMap = map[string]int32{ |
| "in_port": 0, |
| "in_phy_port": 1, |
| "metadata": 2, |
| "eth_dst": 3, |
| "eth_src": 4, |
| "eth_type": 5, |
| "vlan_vid": 6, |
| "vlan_pcp": 7, |
| "ip_dscp": 8, |
| "ip_ecn": 9, |
| "ip_proto": 10, |
| "ipv4_src": 11, |
| "ipv4_dst": 12, |
| "tcp_src": 13, |
| "tcp_dst": 14, |
| "udp_src": 15, |
| "udp_dst": 16, |
| "sctp_src": 17, |
| "sctp_dst": 18, |
| "icmpv4_type": 19, |
| "icmpv4_code": 20, |
| "arp_op": 21, |
| "arp_spa": 22, |
| "arp_tpa": 23, |
| "arp_sha": 24, |
| "arp_tha": 25, |
| "ipv6_src": 26, |
| "ipv6_dst": 27, |
| "ipv6_flabel": 28, |
| "icmpv6_type": 29, |
| "icmpv6_code": 30, |
| "ipv6_nd_target": 31, |
| "ipv6_nd_sll": 32, |
| "ipv6_nd_tll": 33, |
| "mpls_label": 34, |
| "mpls_tc": 35, |
| "mpls_bos": 36, |
| "pbb_isid": 37, |
| "tunnel_id": 38, |
| "ipv6_exthdr": 39, |
| "vlan_vid_masked": 200, //made up |
| } |
| |
| func (ofc *OFConnection) handleFlowAdd(ctx context.Context, flowAdd *ofp.FlowAdd) { |
| span, ctx := log.CreateChildSpan(ctx, "openflow-flow-add") |
| defer span.Finish() |
| |
| if logger.V(log.DebugLevel) { |
| js, _ := json.Marshal(flowAdd) |
| logger.Debugw(ctx, "handleFlowAdd called", |
| log.Fields{ |
| "device-id": ofc.DeviceID, |
| "params": js}) |
| } |
| |
| volthaClient := ofc.VolthaClient.Get() |
| if volthaClient == nil { |
| logger.Errorw(ctx, "no-voltha-connection", |
| log.Fields{"device-id": ofc.DeviceID}) |
| return |
| } |
| |
| // Construct the match |
| var oxmList []*voltha.OfpOxmField |
| for _, oxmField := range flowAdd.Match.GetOxmList() { |
| name := oxmMap[oxmField.GetOXMName()] |
| val := oxmField.GetOXMValue() |
| field := voltha.OfpOxmOfbField{Type: voltha.OxmOfbFieldTypes(name)} |
| ofpOxmField := voltha.OfpOxmField{ |
| OxmClass: ofp.OFPXMCOpenflowBasic, |
| Field: &openflow_13.OfpOxmField_OfbField{OfbField: &field}, |
| } |
| switch voltha.OxmOfbFieldTypes(name) { |
| case voltha.OxmOfbFieldTypes_OFPXMT_OFB_IN_PORT: |
| field.Value = &voltha.OfpOxmOfbField_Port{ |
| Port: uint32(val.(ofp.Port)), |
| } |
| case voltha.OxmOfbFieldTypes_OFPXMT_OFB_IN_PHY_PORT: |
| field.Value = &voltha.OfpOxmOfbField_PhysicalPort{ |
| PhysicalPort: val.(uint32), |
| } |
| case voltha.OxmOfbFieldTypes_OFPXMT_OFB_METADATA: |
| field.Value = &voltha.OfpOxmOfbField_TableMetadata{ |
| TableMetadata: val.(uint64), |
| } |
| case voltha.OxmOfbFieldTypes_OFPXMT_OFB_ETH_TYPE: |
| field.Value = &voltha.OfpOxmOfbField_EthType{ |
| EthType: uint32(val.(ofp.EthernetType)), |
| } |
| case voltha.OxmOfbFieldTypes_OFPXMT_OFB_IP_PROTO: |
| field.Value = &voltha.OfpOxmOfbField_IpProto{ |
| IpProto: uint32(val.(ofp.IpPrototype)), |
| } |
| case voltha.OxmOfbFieldTypes_OFPXMT_OFB_IPV4_DST: |
| field.Value = &voltha.OfpOxmOfbField_Ipv4Dst{ |
| Ipv4Dst: binary.BigEndian.Uint32(val.(net.IP)), |
| } |
| case voltha.OxmOfbFieldTypes_OFPXMT_OFB_ETH_DST: |
| field.Value = &voltha.OfpOxmOfbField_EthDst{ |
| EthDst: val.(net.HardwareAddr), |
| } |
| case voltha.OxmOfbFieldTypes_OFPXMT_OFB_UDP_SRC: |
| field.Value = &voltha.OfpOxmOfbField_UdpSrc{ |
| UdpSrc: uint32(val.(uint16)), |
| } |
| case voltha.OxmOfbFieldTypes_OFPXMT_OFB_UDP_DST: |
| field.Value = &voltha.OfpOxmOfbField_UdpDst{ |
| UdpDst: uint32(val.(uint16)), |
| } |
| case voltha.OxmOfbFieldTypes_OFPXMT_OFB_VLAN_VID: |
| field.Value = &voltha.OfpOxmOfbField_VlanVid{ |
| VlanVid: uint32((val.(uint16) & 0xfff) | 0x1000), |
| } |
| case voltha.OxmOfbFieldTypes_OFPXMT_OFB_VLAN_PCP: |
| field.Value = &voltha.OfpOxmOfbField_VlanPcp{ |
| VlanPcp: uint32(val.(uint8)), |
| } |
| case 200: // voltha-protos doesn't actually have a type for vlan_mask |
| field = voltha.OfpOxmOfbField{Type: voltha.OxmOfbFieldTypes(oxmMap["vlan_vid"])} |
| field.HasMask = true |
| ofpOxmField = voltha.OfpOxmField{ |
| OxmClass: ofp.OFPXMCOpenflowBasic, |
| Field: &openflow_13.OfpOxmField_OfbField{OfbField: &field}, |
| } |
| field.Value = &voltha.OfpOxmOfbField_VlanVid{ |
| VlanVid: uint32(val.(uint16)), |
| } |
| vidMask := val.(uint16) |
| field.Mask = &voltha.OfpOxmOfbField_VlanVidMask{ |
| VlanVidMask: uint32(vidMask), |
| } |
| } |
| oxmList = append(oxmList, &ofpOxmField) |
| } |
| |
| // Construct the instructions |
| var instructions []*voltha.OfpInstruction |
| for _, ofpInstruction := range flowAdd.GetInstructions() { |
| instructionType := ofpInstruction.GetType() |
| instruction := voltha.OfpInstruction{Type: uint32(instructionType)} |
| switch instructionType { |
| case ofp.OFPITGotoTable: |
| instruction.Data = &openflow_13.OfpInstruction_GotoTable{ |
| GotoTable: &openflow_13.OfpInstructionGotoTable{ |
| TableId: uint32(ofpInstruction.(ofp.IInstructionGotoTable).GetTableId()), |
| }, |
| } |
| case ofp.OFPITWriteMetadata: |
| instruction.Data = &openflow_13.OfpInstruction_WriteMetadata{ |
| WriteMetadata: &openflow_13.OfpInstructionWriteMetadata{ |
| Metadata: ofpInstruction.(ofp.IInstructionWriteMetadata).GetMetadata(), |
| MetadataMask: ofpInstruction.(ofp.IInstructionWriteMetadata).GetMetadataMask(), |
| }, |
| } |
| case ofp.OFPITWriteActions: |
| var ofpActions []*openflow_13.OfpAction |
| for _, action := range ofpInstruction.(ofp.IInstructionWriteActions).GetActions() { |
| ofpActions = append(ofpActions, extractAction(action)) |
| } |
| instruction.Data = &openflow_13.OfpInstruction_Actions{ |
| Actions: &openflow_13.OfpInstructionActions{ |
| Actions: ofpActions, |
| }, |
| } |
| case ofp.OFPITApplyActions: |
| var ofpActions []*openflow_13.OfpAction |
| for _, action := range ofpInstruction.(ofp.IInstructionApplyActions).GetActions() { |
| ofpActions = append(ofpActions, extractAction(action)) |
| } |
| instruction.Data = &openflow_13.OfpInstruction_Actions{ |
| Actions: &openflow_13.OfpInstructionActions{ |
| Actions: ofpActions, |
| }, |
| } |
| case ofp.OFPITMeter: |
| instruction.Data = &openflow_13.OfpInstruction_Meter{ |
| Meter: &openflow_13.OfpInstructionMeter{ |
| MeterId: ofpInstruction.(ofp.IInstructionMeter).GetMeterId(), |
| }, |
| } |
| } |
| instructions = append(instructions, &instruction) |
| } |
| |
| // Construct the request |
| flowUpdate := openflow_13.FlowTableUpdate{ |
| Id: ofc.DeviceID, |
| FlowMod: &voltha.OfpFlowMod{ |
| Cookie: flowAdd.Cookie, |
| CookieMask: flowAdd.CookieMask, |
| TableId: uint32(flowAdd.TableId), |
| Command: voltha.OfpFlowModCommand_OFPFC_ADD, |
| IdleTimeout: uint32(flowAdd.IdleTimeout), |
| HardTimeout: uint32(flowAdd.HardTimeout), |
| Priority: uint32(flowAdd.Priority), |
| BufferId: flowAdd.BufferId, |
| OutPort: uint32(flowAdd.OutPort), |
| OutGroup: uint32(flowAdd.OutGroup), |
| Flags: uint32(flowAdd.Flags), |
| Match: &voltha.OfpMatch{ |
| Type: voltha.OfpMatchType(flowAdd.Match.GetType()), |
| OxmFields: oxmList, |
| }, |
| |
| Instructions: instructions, |
| }, |
| } |
| if logger.V(log.DebugLevel) { |
| flowUpdateJs, _ := json.Marshal(flowUpdate) |
| logger.Debugf(ctx, "FlowAdd being sent to Voltha", |
| log.Fields{ |
| "device-id": ofc.DeviceID, |
| "flow-mod-object": flowUpdate, |
| "flow-mod-request": flowUpdateJs}) |
| } |
| if _, err := volthaClient.UpdateLogicalDeviceFlowTable(log.WithSpanFromContext(context.Background(), ctx), &flowUpdate); err != nil { |
| logger.Errorw(ctx, "Error calling FlowAdd ", |
| log.Fields{ |
| "device-id": ofc.DeviceID, |
| "error": err}) |
| // Report failure to controller |
| message := ofp.NewFlowModFailedErrorMsg() |
| message.SetXid(flowAdd.Xid) |
| message.SetCode(ofp.OFPFMFCBadCommand) |
| //OF 1.3 |
| message.SetVersion(4) |
| bs := make([]byte, 2) |
| //OF 1.3 |
| bs[0] = byte(4) |
| //Flow Mod |
| bs[1] = byte(14) |
| //Length of the message |
| length := make([]byte, 2) |
| binary.BigEndian.PutUint16(length, 56) |
| bs = append(bs, length...) |
| empty := []byte{0, 0, 0, 0} |
| bs = append(bs, empty...) |
| //Cookie of the Flow |
| cookie := make([]byte, 52) |
| binary.BigEndian.PutUint64(cookie, flowAdd.Cookie) |
| bs = append(bs, cookie...) |
| message.SetData(bs) |
| err := ofc.SendMessage(ctx, message) |
| if err != nil { |
| logger.Errorw(ctx, "Error reporting failure of FlowUpdate to controller", |
| log.Fields{ |
| "device-id": ofc.DeviceID, |
| "error": err}) |
| } |
| } |
| } |
| |
| func (ofc *OFConnection) handleFlowMod(ctx context.Context, flowMod *ofp.FlowMod) { |
| span, ctx := log.CreateChildSpan(ctx, "openflow-flow-modification") |
| defer span.Finish() |
| |
| if logger.V(log.DebugLevel) { |
| js, _ := json.Marshal(flowMod) |
| logger.Debugw(ctx, "handleFlowMod called", |
| log.Fields{ |
| "device-id": ofc.DeviceID, |
| "flow-mod": js}) |
| } |
| logger.Errorw(ctx, "handleFlowMod not implemented", |
| log.Fields{"device-id": ofc.DeviceID}) |
| } |
| |
| func (ofc *OFConnection) handleFlowModStrict(ctx context.Context, flowModStrict *ofp.FlowModifyStrict) { |
| span, ctx := log.CreateChildSpan(ctx, "openflow-flow-modification-strict") |
| defer span.Finish() |
| |
| if logger.V(log.DebugLevel) { |
| js, _ := json.Marshal(flowModStrict) |
| logger.Debugw(ctx, "handleFlowModStrict called", |
| log.Fields{ |
| "device-id": ofc.DeviceID, |
| "flow-mod-strict": js}) |
| } |
| logger.Error(ctx, "handleFlowModStrict not implemented", |
| log.Fields{"device-id": ofc.DeviceID}) |
| } |
| |
| func (ofc *OFConnection) handleFlowDelete(ctx context.Context, flowDelete *ofp.FlowDelete) { |
| span, ctx := log.CreateChildSpan(ctx, "openflow-flow-delete") |
| defer span.Finish() |
| |
| if logger.V(log.DebugLevel) { |
| js, _ := json.Marshal(flowDelete) |
| logger.Debugw(ctx, "handleFlowDelete called", |
| log.Fields{ |
| "device-id": ofc.DeviceID, |
| "flow-delete": js}) |
| } |
| logger.Error(ctx, "handleFlowDelete not implemented", |
| log.Fields{"device-id": ofc.DeviceID}) |
| |
| } |
| |
| func (ofc *OFConnection) handleFlowDeleteStrict(ctx context.Context, flowDeleteStrict *ofp.FlowDeleteStrict) { |
| span, ctx := log.CreateChildSpan(ctx, "openflow-flow-delete-strict") |
| defer span.Finish() |
| |
| if logger.V(log.DebugLevel) { |
| js, _ := json.Marshal(flowDeleteStrict) |
| logger.Debugw(ctx, "handleFlowDeleteStrict called", |
| log.Fields{ |
| "device-id": ofc.DeviceID, |
| "flow-delete-strict": js}) |
| } |
| |
| volthaClient := ofc.VolthaClient.Get() |
| if volthaClient == nil { |
| logger.Errorw(ctx, "no-voltha-connection", |
| log.Fields{"device-id": ofc.DeviceID}) |
| return |
| } |
| |
| // Construct match |
| var oxmList []*voltha.OfpOxmField |
| for _, oxmField := range flowDeleteStrict.Match.GetOxmList() { |
| name := oxmMap[oxmField.GetOXMName()] |
| val := oxmField.GetOXMValue() |
| var ofpOxmField voltha.OfpOxmField |
| ofpOxmField.OxmClass = ofp.OFPXMCOpenflowBasic |
| var field voltha.OfpOxmOfbField |
| field.Type = voltha.OxmOfbFieldTypes(name) |
| |
| var x openflow_13.OfpOxmField_OfbField |
| x.OfbField = &field |
| ofpOxmField.Field = &x |
| |
| switch voltha.OxmOfbFieldTypes(name) { |
| case voltha.OxmOfbFieldTypes_OFPXMT_OFB_IN_PORT: |
| field.Value = &voltha.OfpOxmOfbField_Port{ |
| Port: uint32(val.(ofp.Port)), |
| } |
| case voltha.OxmOfbFieldTypes_OFPXMT_OFB_IN_PHY_PORT: |
| field.Value = &voltha.OfpOxmOfbField_PhysicalPort{ |
| PhysicalPort: val.(uint32), |
| } |
| case voltha.OxmOfbFieldTypes_OFPXMT_OFB_METADATA: |
| field.Value = &voltha.OfpOxmOfbField_TableMetadata{ |
| TableMetadata: val.(uint64), |
| } |
| case voltha.OxmOfbFieldTypes_OFPXMT_OFB_ETH_TYPE: |
| field.Value = &voltha.OfpOxmOfbField_EthType{ |
| EthType: uint32(val.(ofp.EthernetType)), |
| } |
| case voltha.OxmOfbFieldTypes_OFPXMT_OFB_IP_PROTO: |
| field.Value = &voltha.OfpOxmOfbField_IpProto{ |
| IpProto: uint32(val.(ofp.IpPrototype)), |
| } |
| case voltha.OxmOfbFieldTypes_OFPXMT_OFB_IPV4_DST: |
| field.Value = &voltha.OfpOxmOfbField_Ipv4Dst{ |
| Ipv4Dst: binary.BigEndian.Uint32(val.(net.IP)), |
| } |
| case voltha.OxmOfbFieldTypes_OFPXMT_OFB_ETH_DST: |
| field.Value = &voltha.OfpOxmOfbField_EthDst{ |
| EthDst: val.(net.HardwareAddr), |
| } |
| case voltha.OxmOfbFieldTypes_OFPXMT_OFB_UDP_SRC: |
| field.Value = &voltha.OfpOxmOfbField_UdpSrc{ |
| UdpSrc: uint32(val.(uint16)), |
| } |
| case voltha.OxmOfbFieldTypes_OFPXMT_OFB_UDP_DST: |
| field.Value = &voltha.OfpOxmOfbField_UdpDst{ |
| UdpDst: uint32(val.(uint16)), |
| } |
| case voltha.OxmOfbFieldTypes_OFPXMT_OFB_VLAN_VID: |
| field.Value = &voltha.OfpOxmOfbField_VlanVid{ |
| VlanVid: uint32(val.(uint16)), |
| } |
| case voltha.OxmOfbFieldTypes_OFPXMT_OFB_VLAN_PCP: |
| field.Value = &voltha.OfpOxmOfbField_VlanPcp{ |
| VlanPcp: uint32(val.(uint8)), |
| } |
| case 200: // voltha-protos doesn't actually have a type for vlan_mask |
| field = voltha.OfpOxmOfbField{Type: voltha.OxmOfbFieldTypes(oxmMap["vlan_vid"])} |
| field.HasMask = true |
| ofpOxmField = voltha.OfpOxmField{ |
| OxmClass: ofp.OFPXMCOpenflowBasic, |
| Field: &openflow_13.OfpOxmField_OfbField{OfbField: &field}, |
| } |
| field.Value = &voltha.OfpOxmOfbField_VlanVid{ |
| VlanVid: uint32(val.(uint16)), |
| } |
| vidMask := val.(uint16) |
| field.Mask = &voltha.OfpOxmOfbField_VlanVidMask{ |
| VlanVidMask: uint32(vidMask), |
| } |
| } |
| |
| oxmList = append(oxmList, &ofpOxmField) |
| } |
| |
| responseRequired := false |
| |
| if flowDeleteStrict.GetFlags() == ofp.OFPFFSendFlowRem { |
| responseRequired = true |
| } |
| |
| // Construct request |
| flowUpdate := openflow_13.FlowTableUpdate{ |
| Id: ofc.DeviceID, |
| FlowMod: &voltha.OfpFlowMod{ |
| Cookie: flowDeleteStrict.Cookie, |
| CookieMask: flowDeleteStrict.CookieMask, |
| TableId: uint32(flowDeleteStrict.TableId), |
| Command: voltha.OfpFlowModCommand_OFPFC_DELETE_STRICT, |
| IdleTimeout: uint32(flowDeleteStrict.IdleTimeout), |
| HardTimeout: uint32(flowDeleteStrict.HardTimeout), |
| Priority: uint32(flowDeleteStrict.Priority), |
| BufferId: flowDeleteStrict.BufferId, |
| OutPort: uint32(flowDeleteStrict.OutPort), |
| OutGroup: uint32(flowDeleteStrict.OutGroup), |
| Flags: uint32(flowDeleteStrict.Flags), |
| Match: &voltha.OfpMatch{ |
| Type: voltha.OfpMatchType(flowDeleteStrict.Match.GetType()), |
| OxmFields: oxmList, |
| }, |
| }, |
| } |
| |
| if logger.V(log.DebugLevel) { |
| flowUpdateJs, _ := json.Marshal(flowUpdate) |
| logger.Debugf(ctx, "FlowDeleteStrict being sent to Voltha", |
| log.Fields{ |
| "device-id": ofc.DeviceID, |
| "flow-update": flowUpdateJs}) |
| } |
| |
| if _, err := volthaClient.UpdateLogicalDeviceFlowTable(log.WithSpanFromContext(context.Background(), ctx), &flowUpdate); err != nil { |
| logger.Errorw(ctx, "Error calling FlowDelete ", |
| log.Fields{ |
| "device-id": ofc.DeviceID, |
| "error": err}) |
| return |
| } |
| |
| if responseRequired { |
| response := ofp.NewFlowRemoved() |
| |
| response.Cookie = flowDeleteStrict.Cookie |
| response.Priority = flowDeleteStrict.Priority |
| response.Reason = ofp.OFPRRDelete |
| response.Match = flowDeleteStrict.Match |
| response.IdleTimeout = flowDeleteStrict.IdleTimeout |
| response.HardTimeout = flowDeleteStrict.HardTimeout |
| response.Xid = flowDeleteStrict.Xid |
| |
| err := ofc.SendMessage(ctx, response) |
| if err != nil { |
| logger.Errorw(ctx, "Error sending FlowRemoved to ONOS", |
| log.Fields{ |
| "device-id": ofc.DeviceID, |
| "error": err}) |
| } |
| } |
| |
| } |