Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2018-present Open Networking Foundation |
| 3 | |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package dhcp |
| 18 | |
| 19 | import ( |
Matteo Scandolo | 40e067f | 2019-10-16 16:59:41 -0700 | [diff] [blame] | 20 | "context" |
Matteo Scandolo | 8d28137 | 2020-09-03 16:23:37 -0700 | [diff] [blame] | 21 | "encoding/hex" |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 22 | "errors" |
| 23 | "fmt" |
Elia Battiston | a966654 | 2022-03-17 15:45:45 +0100 | [diff] [blame^] | 24 | "net" |
| 25 | "reflect" |
| 26 | "strconv" |
| 27 | |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 28 | "github.com/google/gopacket" |
| 29 | "github.com/google/gopacket/layers" |
| 30 | "github.com/looplab/fsm" |
Matteo Scandolo | 40e067f | 2019-10-16 16:59:41 -0700 | [diff] [blame] | 31 | "github.com/opencord/bbsim/internal/bbsim/packetHandlers" |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 32 | bbsim "github.com/opencord/bbsim/internal/bbsim/types" |
David K. Bainbridge | c415efe | 2021-08-19 13:05:21 +0000 | [diff] [blame] | 33 | "github.com/opencord/voltha-protos/v5/go/openolt" |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 34 | log "github.com/sirupsen/logrus" |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 35 | ) |
| 36 | |
| 37 | var dhcpLogger = log.WithFields(log.Fields{ |
| 38 | "module": "DHCP", |
| 39 | }) |
| 40 | |
| 41 | var defaultParamsRequestList = []layers.DHCPOpt{ |
| 42 | layers.DHCPOptSubnetMask, |
| 43 | layers.DHCPOptBroadcastAddr, |
| 44 | layers.DHCPOptTimeOffset, |
| 45 | layers.DHCPOptRouter, |
| 46 | layers.DHCPOptDomainName, |
| 47 | layers.DHCPOptDNS, |
| 48 | layers.DHCPOptDomainSearch, |
| 49 | layers.DHCPOptHostname, |
| 50 | layers.DHCPOptNetBIOSTCPNS, |
| 51 | layers.DHCPOptNetBIOSTCPScope, |
| 52 | layers.DHCPOptInterfaceMTU, |
| 53 | layers.DHCPOptClasslessStaticRoute, |
| 54 | layers.DHCPOptNTPServers, |
| 55 | } |
| 56 | |
Matteo Scandolo | 24a88c4 | 2020-09-17 14:55:28 -0700 | [diff] [blame] | 57 | func macAddressToTxId(mac net.HardwareAddr) uint32 { |
| 58 | |
| 59 | // NOTE we want to generate a unique XID, |
| 60 | // the easiest way is to transform the macAddress (already unique) into an integer |
| 61 | str := "" |
| 62 | for _, i := range mac { |
| 63 | str = str + fmt.Sprintf("%d", i) |
| 64 | } |
| 65 | xid, err := strconv.Atoi(str) |
Matteo Scandolo | fe9ac25 | 2019-10-25 11:40:17 -0700 | [diff] [blame] | 66 | if err != nil { |
| 67 | log.Fatal("Can't generate unique XID for ONU") |
| 68 | } |
| 69 | |
Matteo Scandolo | 24a88c4 | 2020-09-17 14:55:28 -0700 | [diff] [blame] | 70 | return uint32(xid) |
| 71 | } |
| 72 | |
| 73 | func createDefaultDHCPReq(mac net.HardwareAddr) layers.DHCPv4 { |
| 74 | xid := macAddressToTxId(mac) |
| 75 | |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 76 | return layers.DHCPv4{ |
| 77 | Operation: layers.DHCPOpRequest, |
| 78 | HardwareType: layers.LinkTypeEthernet, |
| 79 | HardwareLen: 6, |
| 80 | HardwareOpts: 0, |
Matteo Scandolo | fe9ac25 | 2019-10-25 11:40:17 -0700 | [diff] [blame] | 81 | Xid: uint32(xid), |
Matteo Scandolo | 40e067f | 2019-10-16 16:59:41 -0700 | [diff] [blame] | 82 | ClientHWAddr: mac, |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 83 | } |
| 84 | } |
| 85 | |
Matteo Scandolo | bfcfbb3 | 2020-09-28 14:14:39 -0700 | [diff] [blame] | 86 | func createDefaultOpts(gemPortId uint32, intfId uint32, onuId uint32) []layers.DHCPOption { |
| 87 | hostname := []byte(fmt.Sprintf("%d.%d.%d.bbsim.onf.org", gemPortId, intfId, onuId)) |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 88 | opts := []layers.DHCPOption{} |
| 89 | opts = append(opts, layers.DHCPOption{ |
| 90 | Type: layers.DHCPOptHostname, |
| 91 | Data: hostname, |
| 92 | Length: uint8(len(hostname)), |
| 93 | }) |
| 94 | |
| 95 | bytes := []byte{} |
| 96 | for _, option := range defaultParamsRequestList { |
| 97 | bytes = append(bytes, byte(option)) |
| 98 | } |
| 99 | |
| 100 | opts = append(opts, layers.DHCPOption{ |
| 101 | Type: layers.DHCPOptParamsRequest, |
| 102 | Data: bytes, |
| 103 | Length: uint8(len(bytes)), |
| 104 | }) |
| 105 | return opts |
| 106 | } |
| 107 | |
Matteo Scandolo | 24a88c4 | 2020-09-17 14:55:28 -0700 | [diff] [blame] | 108 | func createDHCPDisc(intfId uint32, onuId uint32, gemPort uint32, macAddress net.HardwareAddr) *layers.DHCPv4 { |
| 109 | dhcpLayer := createDefaultDHCPReq(macAddress) |
Matteo Scandolo | bfcfbb3 | 2020-09-28 14:14:39 -0700 | [diff] [blame] | 110 | defaultOpts := createDefaultOpts(gemPort, intfId, onuId) |
Shrey Baid | 688b424 | 2020-07-10 20:40:10 +0530 | [diff] [blame] | 111 | dhcpLayer.Options = append([]layers.DHCPOption{{ |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 112 | Type: layers.DHCPOptMessageType, |
| 113 | Data: []byte{byte(layers.DHCPMsgTypeDiscover)}, |
| 114 | Length: 1, |
| 115 | }}, defaultOpts...) |
| 116 | |
Matteo Scandolo | bfcfbb3 | 2020-09-28 14:14:39 -0700 | [diff] [blame] | 117 | data := []byte{01} |
| 118 | data = append(data, macAddress...) |
Matteo Scandolo | fe9ac25 | 2019-10-25 11:40:17 -0700 | [diff] [blame] | 119 | dhcpLayer.Options = append(dhcpLayer.Options, layers.DHCPOption{ |
| 120 | Type: layers.DHCPOptClientID, |
| 121 | Data: data, |
| 122 | Length: uint8(len(data)), |
| 123 | }) |
Matteo Scandolo | 40e067f | 2019-10-16 16:59:41 -0700 | [diff] [blame] | 124 | |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 125 | return &dhcpLayer |
| 126 | } |
| 127 | |
Matteo Scandolo | bfcfbb3 | 2020-09-28 14:14:39 -0700 | [diff] [blame] | 128 | func createDHCPReq(intfId uint32, onuId uint32, macAddress net.HardwareAddr, offeredIp net.IP, gemPortId uint32) *layers.DHCPv4 { |
Matteo Scandolo | 24a88c4 | 2020-09-17 14:55:28 -0700 | [diff] [blame] | 129 | dhcpLayer := createDefaultDHCPReq(macAddress) |
Matteo Scandolo | bfcfbb3 | 2020-09-28 14:14:39 -0700 | [diff] [blame] | 130 | defaultOpts := createDefaultOpts(gemPortId, intfId, onuId) |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 131 | |
| 132 | dhcpLayer.Options = append(defaultOpts, layers.DHCPOption{ |
| 133 | Type: layers.DHCPOptMessageType, |
| 134 | Data: []byte{byte(layers.DHCPMsgTypeRequest)}, |
| 135 | Length: 1, |
| 136 | }) |
| 137 | |
| 138 | data := []byte{182, 21, 0, 128} |
| 139 | dhcpLayer.Options = append(dhcpLayer.Options, layers.DHCPOption{ |
| 140 | Type: layers.DHCPOptServerID, |
| 141 | Data: data, |
| 142 | Length: uint8(len(data)), |
| 143 | }) |
| 144 | |
| 145 | data = []byte{0xcd, 0x28, 0xcb, 0xcc, 0x00, 0x01, 0x00, 0x01, |
Matteo Scandolo | 40e067f | 2019-10-16 16:59:41 -0700 | [diff] [blame] | 146 | 0x23, 0xed, 0x11, 0xec, 0x4e, 0xfc, 0xcd, 0x28, byte(intfId), byte(onuId)} |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 147 | dhcpLayer.Options = append(dhcpLayer.Options, layers.DHCPOption{ |
| 148 | Type: layers.DHCPOptClientID, |
| 149 | Data: data, |
| 150 | Length: uint8(len(data)), |
| 151 | }) |
| 152 | |
Matteo Scandolo | 40e067f | 2019-10-16 16:59:41 -0700 | [diff] [blame] | 153 | // NOTE we should not request a specific IP, or we should request the one that has been offered |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 154 | dhcpLayer.Options = append(dhcpLayer.Options, layers.DHCPOption{ |
| 155 | Type: layers.DHCPOptRequestIP, |
Matteo Scandolo | 40e067f | 2019-10-16 16:59:41 -0700 | [diff] [blame] | 156 | Data: offeredIp, |
| 157 | Length: uint8(len(offeredIp)), |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 158 | }) |
| 159 | return &dhcpLayer |
| 160 | } |
| 161 | |
Elia Battiston | a966654 | 2022-03-17 15:45:45 +0100 | [diff] [blame^] | 162 | func serializeDHCPPacket(tag int, srcMac net.HardwareAddr, dhcp *layers.DHCPv4, pbit uint8) (gopacket.Packet, error) { |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 163 | buffer := gopacket.NewSerializeBuffer() |
Matteo Scandolo | e0e9b77 | 2020-02-03 14:23:43 -0800 | [diff] [blame] | 164 | |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 165 | options := gopacket.SerializeOptions{ |
| 166 | ComputeChecksums: true, |
| 167 | FixLengths: true, |
| 168 | } |
| 169 | |
| 170 | ethernetLayer := &layers.Ethernet{ |
| 171 | SrcMAC: srcMac, |
| 172 | DstMAC: net.HardwareAddr{0xff, 0xff, 0xff, 0xff, 0xff, 0xff}, |
| 173 | EthernetType: layers.EthernetTypeIPv4, |
| 174 | } |
| 175 | |
| 176 | ipLayer := &layers.IPv4{ |
| 177 | Version: 4, |
| 178 | TOS: 0x10, |
| 179 | TTL: 128, |
| 180 | SrcIP: []byte{0, 0, 0, 0}, |
| 181 | DstIP: []byte{255, 255, 255, 255}, |
| 182 | Protocol: layers.IPProtocolUDP, |
| 183 | } |
| 184 | |
| 185 | udpLayer := &layers.UDP{ |
| 186 | SrcPort: 68, |
| 187 | DstPort: 67, |
| 188 | } |
| 189 | |
Shrey Baid | 688b424 | 2020-07-10 20:40:10 +0530 | [diff] [blame] | 190 | _ = udpLayer.SetNetworkLayerForChecksum(ipLayer) |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 191 | if err := gopacket.SerializeLayers(buffer, options, ethernetLayer, ipLayer, udpLayer, dhcp); err != nil { |
Matteo Scandolo | e0e9b77 | 2020-02-03 14:23:43 -0800 | [diff] [blame] | 192 | dhcpLogger.Error("SerializeLayers") |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 193 | return nil, err |
| 194 | } |
| 195 | |
Matteo Scandolo | e0e9b77 | 2020-02-03 14:23:43 -0800 | [diff] [blame] | 196 | untaggedPkt := gopacket.NewPacket(buffer.Bytes(), layers.LayerTypeEthernet, gopacket.Default) |
| 197 | |
Elia Battiston | a966654 | 2022-03-17 15:45:45 +0100 | [diff] [blame^] | 198 | taggedPkt, err := packetHandlers.PushSingleTag(tag, untaggedPkt, pbit) |
Matteo Scandolo | e0e9b77 | 2020-02-03 14:23:43 -0800 | [diff] [blame] | 199 | if err != nil { |
| 200 | dhcpLogger.Error("TagPacket") |
| 201 | return nil, err |
| 202 | } |
| 203 | |
Matteo Scandolo | 90d08f6 | 2020-10-29 12:06:55 -0700 | [diff] [blame] | 204 | return taggedPkt, nil |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 205 | } |
| 206 | |
Matteo Scandolo | 40e067f | 2019-10-16 16:59:41 -0700 | [diff] [blame] | 207 | func GetDhcpLayer(pkt gopacket.Packet) (*layers.DHCPv4, error) { |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 208 | layerDHCP := pkt.Layer(layers.LayerTypeDHCPv4) |
| 209 | dhcp, _ := layerDHCP.(*layers.DHCPv4) |
| 210 | if dhcp == nil { |
| 211 | return nil, errors.New("Failed-to-extract-DHCP-layer") |
| 212 | } |
| 213 | return dhcp, nil |
| 214 | } |
| 215 | |
Matteo Scandolo | 40e067f | 2019-10-16 16:59:41 -0700 | [diff] [blame] | 216 | func GetDhcpMessageType(dhcp *layers.DHCPv4) (layers.DHCPMsgType, error) { |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 217 | for _, option := range dhcp.Options { |
| 218 | if option.Type == layers.DHCPOptMessageType { |
Matteo Scandolo | 40e067f | 2019-10-16 16:59:41 -0700 | [diff] [blame] | 219 | if reflect.DeepEqual(option.Data, []byte{byte(layers.DHCPMsgTypeDiscover)}) { |
| 220 | return layers.DHCPMsgTypeDiscover, nil |
| 221 | } else if reflect.DeepEqual(option.Data, []byte{byte(layers.DHCPMsgTypeOffer)}) { |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 222 | return layers.DHCPMsgTypeOffer, nil |
Matteo Scandolo | 40e067f | 2019-10-16 16:59:41 -0700 | [diff] [blame] | 223 | } else if reflect.DeepEqual(option.Data, []byte{byte(layers.DHCPMsgTypeRequest)}) { |
| 224 | return layers.DHCPMsgTypeRequest, nil |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 225 | } else if reflect.DeepEqual(option.Data, []byte{byte(layers.DHCPMsgTypeAck)}) { |
| 226 | return layers.DHCPMsgTypeAck, nil |
| 227 | } else if reflect.DeepEqual(option.Data, []byte{byte(layers.DHCPMsgTypeRelease)}) { |
| 228 | return layers.DHCPMsgTypeRelease, nil |
| 229 | } else { |
| 230 | msg := fmt.Sprintf("This type %x is not supported", option.Data) |
| 231 | return 0, errors.New(msg) |
| 232 | } |
| 233 | } |
| 234 | } |
| 235 | return 0, errors.New("Failed to extract MsgType from dhcp") |
| 236 | } |
| 237 | |
Matteo Scandolo | 40e067f | 2019-10-16 16:59:41 -0700 | [diff] [blame] | 238 | // returns the DHCP Layer type or error if it's not a DHCP Packet |
| 239 | func GetDhcpPacketType(pkt gopacket.Packet) (string, error) { |
| 240 | dhcpLayer, err := GetDhcpLayer(pkt) |
| 241 | if err != nil { |
| 242 | return "", err |
| 243 | } |
| 244 | dhcpMessageType, err := GetDhcpMessageType(dhcpLayer) |
| 245 | if err != nil { |
| 246 | return "", err |
| 247 | } |
| 248 | |
| 249 | return dhcpMessageType.String(), nil |
| 250 | } |
| 251 | |
Girish Gowdra | 62f2429 | 2021-05-12 16:28:39 -0700 | [diff] [blame] | 252 | func sendDHCPPktIn(msg bbsim.ByteMsg, portNo uint32, gemPortId uint32, uniId uint32, stream bbsim.Stream) error { |
Matteo Scandolo | eb6b5af | 2020-06-24 16:23:58 -0700 | [diff] [blame] | 253 | |
Matteo Scandolo | 8d28137 | 2020-09-03 16:23:37 -0700 | [diff] [blame] | 254 | dhcpLogger.WithFields(log.Fields{ |
Shrey Baid | 688b424 | 2020-07-10 20:40:10 +0530 | [diff] [blame] | 255 | "OnuId": msg.OnuId, |
| 256 | "IntfId": msg.IntfId, |
Matteo Scandolo | 4a03626 | 2020-08-17 15:56:13 -0700 | [diff] [blame] | 257 | "GemPort": gemPortId, |
Shrey Baid | 688b424 | 2020-07-10 20:40:10 +0530 | [diff] [blame] | 258 | "Type": "DHCP", |
Matteo Scandolo | 8d28137 | 2020-09-03 16:23:37 -0700 | [diff] [blame] | 259 | "Pkt": hex.EncodeToString(msg.Bytes), |
| 260 | }).Trace("Sending DHCP packet in") |
Matteo Scandolo | eb6b5af | 2020-06-24 16:23:58 -0700 | [diff] [blame] | 261 | |
Matteo Scandolo | 8a57481 | 2021-05-20 15:18:53 -0700 | [diff] [blame] | 262 | // TODO the adapter uses Onu, Uni and gemPort to route the packet, |
| 263 | // stop using PortNo to ensure consistent behavior |
| 264 | // requires voltha-protos:4.1.6 |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 265 | data := &openolt.Indication_PktInd{PktInd: &openolt.PacketIndication{ |
Matteo Scandolo | 2742870 | 2019-10-11 16:21:16 -0700 | [diff] [blame] | 266 | IntfType: "pon", |
| 267 | IntfId: msg.IntfId, |
Matteo Scandolo | 4a03626 | 2020-08-17 15:56:13 -0700 | [diff] [blame] | 268 | GemportId: gemPortId, |
Matteo Scandolo | 2742870 | 2019-10-11 16:21:16 -0700 | [diff] [blame] | 269 | Pkt: msg.Bytes, |
| 270 | PortNo: portNo, |
Girish Gowdra | 62f2429 | 2021-05-12 16:28:39 -0700 | [diff] [blame] | 271 | OnuId: msg.OnuId, |
| 272 | UniId: uniId, |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 273 | }} |
| 274 | |
| 275 | if err := stream.Send(&openolt.Indication{Data: data}); err != nil { |
| 276 | dhcpLogger.Errorf("Fail to send DHCP PktInd indication. %v", err) |
| 277 | return err |
| 278 | } |
| 279 | return nil |
| 280 | } |
| 281 | |
Matteo Scandolo | 24a88c4 | 2020-09-17 14:55:28 -0700 | [diff] [blame] | 282 | func sendDHCPRequest(ponPortId uint32, onuId uint32, serviceName string, serialNumber string, portNo uint32, |
Elia Battiston | a966654 | 2022-03-17 15:45:45 +0100 | [diff] [blame^] | 283 | tag int, gemPortId uint32, onuStateMachine *fsm.FSM, onuHwAddress net.HardwareAddr, |
Girish Gowdra | 62f2429 | 2021-05-12 16:28:39 -0700 | [diff] [blame] | 284 | offeredIp net.IP, pbit uint8, uniId uint32, stream bbsim.Stream) error { |
Matteo Scandolo | bfcfbb3 | 2020-09-28 14:14:39 -0700 | [diff] [blame] | 285 | dhcp := createDHCPReq(ponPortId, onuId, onuHwAddress, offeredIp, gemPortId) |
Elia Battiston | a966654 | 2022-03-17 15:45:45 +0100 | [diff] [blame^] | 286 | pkt, err := serializeDHCPPacket(tag, onuHwAddress, dhcp, pbit) |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 287 | |
| 288 | if err != nil { |
Matteo Scandolo | fe9ac25 | 2019-10-25 11:40:17 -0700 | [diff] [blame] | 289 | dhcpLogger.WithFields(log.Fields{ |
| 290 | "OnuId": onuId, |
| 291 | "IntfId": ponPortId, |
| 292 | "OnuSn": serialNumber, |
| 293 | "OfferedIp": offeredIp.String(), |
| 294 | }).Errorf("Cannot serializeDHCPPacket: %s", err) |
| 295 | if err := updateDhcpFailed(onuId, ponPortId, serialNumber, onuStateMachine); err != nil { |
| 296 | return err |
| 297 | } |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 298 | return err |
| 299 | } |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 300 | |
| 301 | msg := bbsim.ByteMsg{ |
| 302 | IntfId: ponPortId, |
| 303 | OnuId: onuId, |
Matteo Scandolo | 90d08f6 | 2020-10-29 12:06:55 -0700 | [diff] [blame] | 304 | Bytes: pkt.Data(), |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 305 | } |
| 306 | |
Girish Gowdra | 62f2429 | 2021-05-12 16:28:39 -0700 | [diff] [blame] | 307 | if err := sendDHCPPktIn(msg, portNo, gemPortId, uniId, stream); err != nil { |
Matteo Scandolo | fe9ac25 | 2019-10-25 11:40:17 -0700 | [diff] [blame] | 308 | dhcpLogger.WithFields(log.Fields{ |
| 309 | "OnuId": onuId, |
| 310 | "IntfId": ponPortId, |
| 311 | "OnuSn": serialNumber, |
| 312 | }).Errorf("Cannot sendDHCPPktIn: %s", err) |
| 313 | if err := updateDhcpFailed(onuId, ponPortId, serialNumber, onuStateMachine); err != nil { |
| 314 | return err |
| 315 | } |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 316 | return err |
| 317 | } |
Matteo Scandolo | 40e067f | 2019-10-16 16:59:41 -0700 | [diff] [blame] | 318 | |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 319 | dhcpLogger.WithFields(log.Fields{ |
Matteo Scandolo | 7f656fb | 2020-09-08 15:18:15 -0700 | [diff] [blame] | 320 | "OnuId": onuId, |
| 321 | "IntfId": ponPortId, |
| 322 | "OnuSn": serialNumber, |
| 323 | "OfferedIp": offeredIp.String(), |
| 324 | "ServiceName": serviceName, |
Matteo Scandolo | 40e067f | 2019-10-16 16:59:41 -0700 | [diff] [blame] | 325 | }).Infof("DHCPRequest Sent") |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 326 | return nil |
| 327 | } |
| 328 | |
Matteo Scandolo | 075b189 | 2019-10-07 12:11:07 -0700 | [diff] [blame] | 329 | func updateDhcpFailed(onuId uint32, ponPortId uint32, serialNumber string, onuStateMachine *fsm.FSM) error { |
| 330 | if err := onuStateMachine.Event("dhcp_failed"); err != nil { |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 331 | dhcpLogger.WithFields(log.Fields{ |
| 332 | "OnuId": onuId, |
| 333 | "IntfId": ponPortId, |
| 334 | "OnuSn": serialNumber, |
Matteo Scandolo | 075b189 | 2019-10-07 12:11:07 -0700 | [diff] [blame] | 335 | }).Errorf("Error while transitioning ONU State %v", err) |
| 336 | return err |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 337 | } |
Matteo Scandolo | 075b189 | 2019-10-07 12:11:07 -0700 | [diff] [blame] | 338 | return nil |
| 339 | } |
| 340 | |
Elia Battiston | a966654 | 2022-03-17 15:45:45 +0100 | [diff] [blame^] | 341 | func SendDHCPDiscovery(ponPortId uint32, onuId uint32, serviceName string, tag int, gemPortId uint32, |
Matteo Scandolo | 8a57481 | 2021-05-20 15:18:53 -0700 | [diff] [blame] | 342 | serialNumber string, portNo uint32, uniId uint32, stateMachine *fsm.FSM, onuHwAddress net.HardwareAddr, |
Matteo Scandolo | 8d28137 | 2020-09-03 16:23:37 -0700 | [diff] [blame] | 343 | pbit uint8, stream bbsim.Stream) error { |
| 344 | |
Matteo Scandolo | 24a88c4 | 2020-09-17 14:55:28 -0700 | [diff] [blame] | 345 | dhcp := createDHCPDisc(ponPortId, onuId, gemPortId, onuHwAddress) |
Elia Battiston | a966654 | 2022-03-17 15:45:45 +0100 | [diff] [blame^] | 346 | pkt, err := serializeDHCPPacket(tag, onuHwAddress, dhcp, pbit) |
Matteo Scandolo | e0e9b77 | 2020-02-03 14:23:43 -0800 | [diff] [blame] | 347 | |
Matteo Scandolo | 075b189 | 2019-10-07 12:11:07 -0700 | [diff] [blame] | 348 | if err != nil { |
Matteo Scandolo | fe9ac25 | 2019-10-25 11:40:17 -0700 | [diff] [blame] | 349 | dhcpLogger.WithFields(log.Fields{ |
Matteo Scandolo | 7f656fb | 2020-09-08 15:18:15 -0700 | [diff] [blame] | 350 | "OnuId": onuId, |
| 351 | "IntfId": ponPortId, |
| 352 | "OnuSn": serialNumber, |
Matteo Scandolo | 8a57481 | 2021-05-20 15:18:53 -0700 | [diff] [blame] | 353 | "PortNo": portNo, |
| 354 | "UniId": uniId, |
| 355 | "GemPortId": gemPortId, |
Matteo Scandolo | 7f656fb | 2020-09-08 15:18:15 -0700 | [diff] [blame] | 356 | "ServiceName": serviceName, |
Matteo Scandolo | fe9ac25 | 2019-10-25 11:40:17 -0700 | [diff] [blame] | 357 | }).Errorf("Cannot serializeDHCPPacket: %s", err) |
Matteo Scandolo | 4a03626 | 2020-08-17 15:56:13 -0700 | [diff] [blame] | 358 | if err := updateDhcpFailed(onuId, ponPortId, serialNumber, stateMachine); err != nil { |
Matteo Scandolo | fe9ac25 | 2019-10-25 11:40:17 -0700 | [diff] [blame] | 359 | return err |
| 360 | } |
Matteo Scandolo | 075b189 | 2019-10-07 12:11:07 -0700 | [diff] [blame] | 361 | return err |
| 362 | } |
Matteo Scandolo | 075b189 | 2019-10-07 12:11:07 -0700 | [diff] [blame] | 363 | |
| 364 | msg := bbsim.ByteMsg{ |
| 365 | IntfId: ponPortId, |
| 366 | OnuId: onuId, |
Matteo Scandolo | 90d08f6 | 2020-10-29 12:06:55 -0700 | [diff] [blame] | 367 | Bytes: pkt.Data(), |
Matteo Scandolo | 075b189 | 2019-10-07 12:11:07 -0700 | [diff] [blame] | 368 | } |
| 369 | |
Girish Gowdra | 62f2429 | 2021-05-12 16:28:39 -0700 | [diff] [blame] | 370 | if err := sendDHCPPktIn(msg, portNo, gemPortId, uniId, stream); err != nil { |
Matteo Scandolo | fe9ac25 | 2019-10-25 11:40:17 -0700 | [diff] [blame] | 371 | dhcpLogger.WithFields(log.Fields{ |
Matteo Scandolo | 7f656fb | 2020-09-08 15:18:15 -0700 | [diff] [blame] | 372 | "OnuId": onuId, |
| 373 | "IntfId": ponPortId, |
| 374 | "OnuSn": serialNumber, |
Matteo Scandolo | 8a57481 | 2021-05-20 15:18:53 -0700 | [diff] [blame] | 375 | "PortNo": portNo, |
| 376 | "UniId": uniId, |
| 377 | "GemPortId": gemPortId, |
Matteo Scandolo | 7f656fb | 2020-09-08 15:18:15 -0700 | [diff] [blame] | 378 | "ServiceName": serviceName, |
Matteo Scandolo | fe9ac25 | 2019-10-25 11:40:17 -0700 | [diff] [blame] | 379 | }).Errorf("Cannot sendDHCPPktIn: %s", err) |
Matteo Scandolo | 4a03626 | 2020-08-17 15:56:13 -0700 | [diff] [blame] | 380 | if err := updateDhcpFailed(onuId, ponPortId, serialNumber, stateMachine); err != nil { |
Matteo Scandolo | 075b189 | 2019-10-07 12:11:07 -0700 | [diff] [blame] | 381 | return err |
| 382 | } |
| 383 | return err |
| 384 | } |
| 385 | dhcpLogger.WithFields(log.Fields{ |
Matteo Scandolo | 7f656fb | 2020-09-08 15:18:15 -0700 | [diff] [blame] | 386 | "OnuId": onuId, |
| 387 | "IntfId": ponPortId, |
| 388 | "OnuSn": serialNumber, |
Matteo Scandolo | 8a57481 | 2021-05-20 15:18:53 -0700 | [diff] [blame] | 389 | "PortNo": portNo, |
| 390 | "UniId": uniId, |
| 391 | "GemPortId": gemPortId, |
Matteo Scandolo | 7f656fb | 2020-09-08 15:18:15 -0700 | [diff] [blame] | 392 | "ServiceName": serviceName, |
| 393 | }).Info("DHCPDiscovery Sent") |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 394 | |
Matteo Scandolo | 4a03626 | 2020-08-17 15:56:13 -0700 | [diff] [blame] | 395 | if err := stateMachine.Event("dhcp_discovery_sent"); err != nil { |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 396 | dhcpLogger.WithFields(log.Fields{ |
Matteo Scandolo | 7f656fb | 2020-09-08 15:18:15 -0700 | [diff] [blame] | 397 | "OnuId": onuId, |
| 398 | "IntfId": ponPortId, |
| 399 | "OnuSn": serialNumber, |
Matteo Scandolo | 8a57481 | 2021-05-20 15:18:53 -0700 | [diff] [blame] | 400 | "PortNo": portNo, |
| 401 | "UniId": uniId, |
| 402 | "GemPortId": gemPortId, |
Matteo Scandolo | 7f656fb | 2020-09-08 15:18:15 -0700 | [diff] [blame] | 403 | "ServiceName": serviceName, |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 404 | }).Errorf("Error while transitioning ONU State %v", err) |
Matteo Scandolo | adc72a8 | 2020-09-08 18:46:08 -0700 | [diff] [blame] | 405 | return err |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 406 | } |
Matteo Scandolo | 075b189 | 2019-10-07 12:11:07 -0700 | [diff] [blame] | 407 | return nil |
| 408 | } |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 409 | |
Matteo Scandolo | 24a88c4 | 2020-09-17 14:55:28 -0700 | [diff] [blame] | 410 | func HandleNextPacket(onuId uint32, ponPortId uint32, serviceName string, serialNumber string, portNo uint32, |
Elia Battiston | a966654 | 2022-03-17 15:45:45 +0100 | [diff] [blame^] | 411 | tag int, gemPortId uint32, uniId uint32, onuHwAddress net.HardwareAddr, onuStateMachine *fsm.FSM, |
Matteo Scandolo | 8d28137 | 2020-09-03 16:23:37 -0700 | [diff] [blame] | 412 | pkt gopacket.Packet, pbit uint8, stream bbsim.Stream) error { |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 413 | |
Matteo Scandolo | 40e067f | 2019-10-16 16:59:41 -0700 | [diff] [blame] | 414 | dhcpLayer, err := GetDhcpLayer(pkt) |
Matteo Scandolo | 075b189 | 2019-10-07 12:11:07 -0700 | [diff] [blame] | 415 | if err != nil { |
| 416 | dhcpLogger.WithFields(log.Fields{ |
Matteo Scandolo | 7f656fb | 2020-09-08 15:18:15 -0700 | [diff] [blame] | 417 | "OnuId": onuId, |
| 418 | "IntfId": ponPortId, |
| 419 | "OnuSn": serialNumber, |
Matteo Scandolo | 8a57481 | 2021-05-20 15:18:53 -0700 | [diff] [blame] | 420 | "PortNo": portNo, |
| 421 | "UniId": uniId, |
| 422 | "GemPortId": gemPortId, |
Matteo Scandolo | 7f656fb | 2020-09-08 15:18:15 -0700 | [diff] [blame] | 423 | "ServiceName": serviceName, |
Matteo Scandolo | 075b189 | 2019-10-07 12:11:07 -0700 | [diff] [blame] | 424 | }).Errorf("Can't get DHCP Layer from Packet: %v", err) |
| 425 | if err := updateDhcpFailed(onuId, ponPortId, serialNumber, onuStateMachine); err != nil { |
| 426 | return err |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 427 | } |
Matteo Scandolo | 075b189 | 2019-10-07 12:11:07 -0700 | [diff] [blame] | 428 | return err |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 429 | } |
Matteo Scandolo | 40e067f | 2019-10-16 16:59:41 -0700 | [diff] [blame] | 430 | dhcpMessageType, err := GetDhcpMessageType(dhcpLayer) |
Matteo Scandolo | 075b189 | 2019-10-07 12:11:07 -0700 | [diff] [blame] | 431 | if err != nil { |
| 432 | dhcpLogger.WithFields(log.Fields{ |
Matteo Scandolo | 7f656fb | 2020-09-08 15:18:15 -0700 | [diff] [blame] | 433 | "OnuId": onuId, |
| 434 | "IntfId": ponPortId, |
| 435 | "OnuSn": serialNumber, |
Matteo Scandolo | 8a57481 | 2021-05-20 15:18:53 -0700 | [diff] [blame] | 436 | "PortNo": portNo, |
| 437 | "UniId": uniId, |
| 438 | "GemPortId": gemPortId, |
Matteo Scandolo | 7f656fb | 2020-09-08 15:18:15 -0700 | [diff] [blame] | 439 | "ServiceName": serviceName, |
Matteo Scandolo | 075b189 | 2019-10-07 12:11:07 -0700 | [diff] [blame] | 440 | }).Errorf("Can't get DHCP Message Type from DHCP Layer: %v", err) |
| 441 | if err := updateDhcpFailed(onuId, ponPortId, serialNumber, onuStateMachine); err != nil { |
| 442 | return err |
| 443 | } |
| 444 | return err |
| 445 | } |
| 446 | |
| 447 | if dhcpLayer.Operation == layers.DHCPOpReply { |
| 448 | if dhcpMessageType == layers.DHCPMsgTypeOffer { |
Matteo Scandolo | 40e067f | 2019-10-16 16:59:41 -0700 | [diff] [blame] | 449 | offeredIp := dhcpLayer.YourClientIP |
Elia Battiston | a966654 | 2022-03-17 15:45:45 +0100 | [diff] [blame^] | 450 | if err := sendDHCPRequest(ponPortId, onuId, serviceName, serialNumber, portNo, tag, gemPortId, onuStateMachine, onuHwAddress, offeredIp, pbit, uniId, stream); err != nil { |
Matteo Scandolo | 075b189 | 2019-10-07 12:11:07 -0700 | [diff] [blame] | 451 | dhcpLogger.WithFields(log.Fields{ |
Matteo Scandolo | 7f656fb | 2020-09-08 15:18:15 -0700 | [diff] [blame] | 452 | "OnuId": onuId, |
| 453 | "IntfId": ponPortId, |
| 454 | "OnuSn": serialNumber, |
Matteo Scandolo | 8a57481 | 2021-05-20 15:18:53 -0700 | [diff] [blame] | 455 | "PortNo": portNo, |
| 456 | "UniId": uniId, |
| 457 | "GemPortId": gemPortId, |
Matteo Scandolo | 7f656fb | 2020-09-08 15:18:15 -0700 | [diff] [blame] | 458 | "ServiceName": serviceName, |
Matteo Scandolo | 075b189 | 2019-10-07 12:11:07 -0700 | [diff] [blame] | 459 | }).Errorf("Can't send DHCP Request: %s", err) |
| 460 | if err := updateDhcpFailed(onuId, ponPortId, serialNumber, onuStateMachine); err != nil { |
| 461 | return err |
| 462 | } |
| 463 | return err |
| 464 | } |
| 465 | if err := onuStateMachine.Event("dhcp_request_sent"); err != nil { |
| 466 | dhcpLogger.WithFields(log.Fields{ |
Matteo Scandolo | 7f656fb | 2020-09-08 15:18:15 -0700 | [diff] [blame] | 467 | "OnuId": onuId, |
| 468 | "IntfId": ponPortId, |
| 469 | "OnuSn": serialNumber, |
Matteo Scandolo | 8a57481 | 2021-05-20 15:18:53 -0700 | [diff] [blame] | 470 | "PortNo": portNo, |
| 471 | "UniId": uniId, |
| 472 | "GemPortId": gemPortId, |
Matteo Scandolo | 7f656fb | 2020-09-08 15:18:15 -0700 | [diff] [blame] | 473 | "ServiceName": serviceName, |
| 474 | }).Errorf("Error while transitioning State %v", err) |
Matteo Scandolo | 075b189 | 2019-10-07 12:11:07 -0700 | [diff] [blame] | 475 | } |
| 476 | |
| 477 | } else if dhcpMessageType == layers.DHCPMsgTypeAck { |
| 478 | // NOTE once the ack is received we don't need to do anything but change the state |
| 479 | if err := onuStateMachine.Event("dhcp_ack_received"); err != nil { |
| 480 | dhcpLogger.WithFields(log.Fields{ |
Matteo Scandolo | 7f656fb | 2020-09-08 15:18:15 -0700 | [diff] [blame] | 481 | "OnuId": onuId, |
| 482 | "IntfId": ponPortId, |
| 483 | "OnuSn": serialNumber, |
Matteo Scandolo | 8a57481 | 2021-05-20 15:18:53 -0700 | [diff] [blame] | 484 | "PortNo": portNo, |
| 485 | "UniId": uniId, |
| 486 | "GemPortId": gemPortId, |
Matteo Scandolo | 7f656fb | 2020-09-08 15:18:15 -0700 | [diff] [blame] | 487 | "ServiceName": serviceName, |
| 488 | }).Errorf("Error while transitioning State %v", err) |
Matteo Scandolo | 075b189 | 2019-10-07 12:11:07 -0700 | [diff] [blame] | 489 | } |
| 490 | dhcpLogger.WithFields(log.Fields{ |
Matteo Scandolo | 7f656fb | 2020-09-08 15:18:15 -0700 | [diff] [blame] | 491 | "OnuId": onuId, |
| 492 | "IntfId": ponPortId, |
| 493 | "OnuSn": serialNumber, |
Matteo Scandolo | 8a57481 | 2021-05-20 15:18:53 -0700 | [diff] [blame] | 494 | "PortNo": portNo, |
| 495 | "UniId": uniId, |
| 496 | "GemPortId": gemPortId, |
Matteo Scandolo | 7f656fb | 2020-09-08 15:18:15 -0700 | [diff] [blame] | 497 | "ServiceName": serviceName, |
Matteo Scandolo | 075b189 | 2019-10-07 12:11:07 -0700 | [diff] [blame] | 498 | }).Infof("DHCP State machine completed") |
| 499 | } |
| 500 | // NOTE do we need to care about DHCPMsgTypeRelease?? |
| 501 | } else { |
| 502 | dhcpLogger.WithFields(log.Fields{ |
Matteo Scandolo | 7f656fb | 2020-09-08 15:18:15 -0700 | [diff] [blame] | 503 | "OnuId": onuId, |
| 504 | "IntfId": ponPortId, |
| 505 | "OnuSn": serialNumber, |
Matteo Scandolo | 8a57481 | 2021-05-20 15:18:53 -0700 | [diff] [blame] | 506 | "PortNo": portNo, |
| 507 | "UniId": uniId, |
| 508 | "GemPortId": gemPortId, |
Matteo Scandolo | 7f656fb | 2020-09-08 15:18:15 -0700 | [diff] [blame] | 509 | "ServiceName": serviceName, |
Matteo Scandolo | 075b189 | 2019-10-07 12:11:07 -0700 | [diff] [blame] | 510 | }).Warnf("Unsupported DHCP Operation: %s", dhcpLayer.Operation.String()) |
| 511 | } |
Matteo Scandolo | fe9ac25 | 2019-10-25 11:40:17 -0700 | [diff] [blame] | 512 | |
Matteo Scandolo | 075b189 | 2019-10-07 12:11:07 -0700 | [diff] [blame] | 513 | return nil |
Matteo Scandolo | 4b3fc7e | 2019-09-17 16:49:54 -0700 | [diff] [blame] | 514 | } |
Matteo Scandolo | 40e067f | 2019-10-16 16:59:41 -0700 | [diff] [blame] | 515 | |
| 516 | // This method handle the BBR DHCP Packets |
| 517 | // BBR does not need to do anything but forward the packets in the correct direction |
Matteo Scandolo | 4a03626 | 2020-08-17 15:56:13 -0700 | [diff] [blame] | 518 | func HandleNextBbrPacket(onuId uint32, ponPortId uint32, serialNumber string, doneChannel chan bool, pkt gopacket.Packet, client openolt.OpenoltClient) error { |
Matteo Scandolo | 40e067f | 2019-10-16 16:59:41 -0700 | [diff] [blame] | 519 | |
| 520 | // check if the packet is going: |
| 521 | // - outgouing: toward the DHCP |
| 522 | // - incoming: toward the ONU |
| 523 | isIncoming := packetHandlers.IsIncomingPacket(pkt) |
Matteo Scandolo | e0e9b77 | 2020-02-03 14:23:43 -0800 | [diff] [blame] | 524 | dhcpLogger.Tracef("Is Incoming: %t", isIncoming) |
| 525 | |
| 526 | pkt, err := packetHandlers.PopSingleTag(pkt) |
| 527 | if err != nil { |
| 528 | dhcpLogger.WithFields(log.Fields{ |
| 529 | "OnuId": onuId, |
| 530 | "IntfId": ponPortId, |
| 531 | "OnuSn": serialNumber, |
| 532 | "error": err, |
| 533 | }).Fatalf("Can't untag packet") |
| 534 | } |
Matteo Scandolo | 40e067f | 2019-10-16 16:59:41 -0700 | [diff] [blame] | 535 | |
| 536 | dhcpType, err := GetDhcpPacketType(pkt) |
| 537 | if err != nil { |
Matteo Scandolo | e0e9b77 | 2020-02-03 14:23:43 -0800 | [diff] [blame] | 538 | dhcpLogger.WithFields(log.Fields{ |
| 539 | "OnuId": onuId, |
| 540 | "IntfId": ponPortId, |
| 541 | "OnuSn": serialNumber, |
| 542 | "error": err, |
Matteo Scandolo | 40e067f | 2019-10-16 16:59:41 -0700 | [diff] [blame] | 543 | }).Fatalf("Can't find DHCP type for packet") |
| 544 | } |
| 545 | |
| 546 | srcMac, _ := packetHandlers.GetSrcMacAddressFromPacket(pkt) |
| 547 | dstMac, _ := packetHandlers.GetDstMacAddressFromPacket(pkt) |
| 548 | |
Shrey Baid | 688b424 | 2020-07-10 20:40:10 +0530 | [diff] [blame] | 549 | if isIncoming { |
Matteo Scandolo | 40e067f | 2019-10-16 16:59:41 -0700 | [diff] [blame] | 550 | |
| 551 | onuPacket := openolt.OnuPacket{ |
| 552 | IntfId: ponPortId, |
| 553 | OnuId: onuId, |
| 554 | PortNo: onuId, |
| 555 | GemportId: 1, |
| 556 | Pkt: pkt.Data(), |
| 557 | } |
| 558 | |
| 559 | if _, err := client.OnuPacketOut(context.Background(), &onuPacket); err != nil { |
Matteo Scandolo | e0e9b77 | 2020-02-03 14:23:43 -0800 | [diff] [blame] | 560 | dhcpLogger.WithFields(log.Fields{ |
Matteo Scandolo | 40e067f | 2019-10-16 16:59:41 -0700 | [diff] [blame] | 561 | "OnuId": onuId, |
| 562 | "IntfId": ponPortId, |
| 563 | "OnuSn": serialNumber, |
| 564 | "Type": dhcpType, |
| 565 | "error": err, |
| 566 | }).Error("Failed to send DHCP packet to the ONU") |
| 567 | } |
| 568 | |
Matteo Scandolo | e0e9b77 | 2020-02-03 14:23:43 -0800 | [diff] [blame] | 569 | dhcpLogger.WithFields(log.Fields{ |
Matteo Scandolo | 40e067f | 2019-10-16 16:59:41 -0700 | [diff] [blame] | 570 | "OnuId": onuId, |
| 571 | "IntfId": ponPortId, |
| 572 | "OnuSn": serialNumber, |
| 573 | "Type": dhcpType, |
| 574 | "DstMac": dstMac, |
| 575 | "SrcMac": srcMac, |
Matteo Scandolo | 40e067f | 2019-10-16 16:59:41 -0700 | [diff] [blame] | 576 | }).Infof("Sent DHCP packet to the ONU") |
| 577 | |
Matteo Scandolo | 40e067f | 2019-10-16 16:59:41 -0700 | [diff] [blame] | 578 | dhcpLayer, _ := GetDhcpLayer(pkt) |
| 579 | dhcpMessageType, _ := GetDhcpMessageType(dhcpLayer) |
| 580 | if dhcpMessageType == layers.DHCPMsgTypeAck { |
| 581 | doneChannel <- true |
| 582 | } |
| 583 | |
| 584 | } else { |
| 585 | // double tag the packet and send it to the NNI |
Matteo Scandolo | 4a03626 | 2020-08-17 15:56:13 -0700 | [diff] [blame] | 586 | // we don't really care about the tags as they are stripped before |
| 587 | // the packet is sent to the DHCP server |
Matteo Scandolo | 8d28137 | 2020-09-03 16:23:37 -0700 | [diff] [blame] | 588 | // in BBR we don't care about the pBit |
| 589 | doubleTaggedPkt, err := packetHandlers.PushDoubleTag(900, 900, pkt, 0) |
Matteo Scandolo | 40e067f | 2019-10-16 16:59:41 -0700 | [diff] [blame] | 590 | if err != nil { |
Matteo Scandolo | e0e9b77 | 2020-02-03 14:23:43 -0800 | [diff] [blame] | 591 | dhcpLogger.WithFields(log.Fields{ |
| 592 | "OnuId": onuId, |
| 593 | "IntfId": ponPortId, |
| 594 | "OnuSn": serialNumber, |
| 595 | "Type": dhcpType, |
| 596 | "error": err, |
| 597 | }).Error("Failed to add double tag to packet") |
Matteo Scandolo | 40e067f | 2019-10-16 16:59:41 -0700 | [diff] [blame] | 598 | } |
| 599 | |
| 600 | pkt := openolt.UplinkPacket{ |
| 601 | IntfId: 0, // BBSim does not care about which NNI, it has only one |
| 602 | Pkt: doubleTaggedPkt.Data(), |
| 603 | } |
| 604 | if _, err := client.UplinkPacketOut(context.Background(), &pkt); err != nil { |
Matteo Scandolo | e0e9b77 | 2020-02-03 14:23:43 -0800 | [diff] [blame] | 605 | dhcpLogger.WithFields(log.Fields{ |
Matteo Scandolo | 40e067f | 2019-10-16 16:59:41 -0700 | [diff] [blame] | 606 | "OnuId": onuId, |
| 607 | "IntfId": ponPortId, |
| 608 | "OnuSn": serialNumber, |
| 609 | "Type": dhcpType, |
| 610 | "error": err, |
| 611 | }).Error("Failed to send DHCP packet out of the NNI Port") |
Matteo Scandolo | 90d08f6 | 2020-10-29 12:06:55 -0700 | [diff] [blame] | 612 | return err |
Matteo Scandolo | 40e067f | 2019-10-16 16:59:41 -0700 | [diff] [blame] | 613 | } |
Matteo Scandolo | e0e9b77 | 2020-02-03 14:23:43 -0800 | [diff] [blame] | 614 | dhcpLogger.WithFields(log.Fields{ |
Matteo Scandolo | 40e067f | 2019-10-16 16:59:41 -0700 | [diff] [blame] | 615 | "OnuId": onuId, |
| 616 | "IntfId": ponPortId, |
| 617 | "OnuSn": serialNumber, |
| 618 | "Type": dhcpType, |
| 619 | "DstMac": dstMac, |
| 620 | "SrcMac": srcMac, |
Matteo Scandolo | 40e067f | 2019-10-16 16:59:41 -0700 | [diff] [blame] | 621 | }).Infof("Sent DHCP packet out of the NNI Port") |
| 622 | } |
| 623 | return nil |
| 624 | } |