blob: 9d4ac6a3c824aa95029f862b87c07ce1c4c26bd7 [file] [log] [blame]
/*
* Copyright 2018-present Open Networking Foundation
* 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 adaptercore
import (
"context"
"crypto/md5"
"encoding/json"
"errors"
"fmt"
"github.com/opencord/voltha-go/common/log"
tp "github.com/opencord/voltha-go/common/techprofile"
"github.com/opencord/voltha-go/rw_core/utils"
rsrcMgr "github.com/opencord/voltha-openolt-adapter/adaptercore/resourcemanager"
ic "github.com/opencord/voltha-protos/go/inter_container"
ofp "github.com/opencord/voltha-protos/go/openflow_13"
openolt_pb2 "github.com/opencord/voltha-protos/go/openolt"
voltha "github.com/opencord/voltha-protos/go/voltha"
"math/big"
)
const (
// Flow categories
HSIA_FLOW = "HSIA_FLOW"
EAPOL_FLOW = "EAPOL_FLOW"
IP_PROTO_DHCP = 17
IP_PROTO_IGMP = 2
EAP_ETH_TYPE = 0x888e
LLDP_ETH_TYPE = 0x88cc
IGMP_PROTO = 2
//FIXME - see also BRDCM_DEFAULT_VLAN in broadcom_onu.py
DEFAULT_MGMT_VLAN = 4091
DEFAULT_NETWORK_INTERFACE_ID = 0
// Openolt Flow
UPSTREAM = "upstream"
DOWNSTREAM = "downstream"
PACKET_TAG_TYPE = "pkt_tag_type"
UNTAGGED = "untagged"
SINGLE_TAG = "single_tag"
DOUBLE_TAG = "double_tag"
// classifierInfo
ETH_TYPE = "eth_type"
TPID = "tpid"
IP_PROTO = "ip_proto"
IN_PORT = "in_port"
VLAN_VID = "vlan_vid"
VLAN_PCP = "vlan_pcp"
UDP_DST = "udp_dst"
UDP_SRC = "udp_src"
IPV4_DST = "ipv4_dst"
IPV4_SRC = "ipv4_src"
METADATA = "metadata"
TUNNEL_ID = "tunnel_id"
OUTPUT = "output"
// Action
POP_VLAN = "pop_vlan"
PUSH_VLAN = "push_vlan"
TRAP_TO_HOST = "trap_to_host"
)
type onuInfo struct {
intfId uint32
onuId uint32
serialNumber string
}
type onuIdKey struct {
intfId uint32
onuId uint32
}
type gemPortKey struct {
intfId uint32
gemPort uint32
}
type packetInInfoKey struct {
intfId uint32
onuId uint32
logicalPort uint32
}
type OpenOltFlowMgr struct {
techprofile []*tp.TechProfileMgr
deviceHandler *DeviceHandler
resourceMgr *rsrcMgr.OpenOltResourceMgr
onuIds map[onuIdKey]onuInfo //OnuId -> OnuInfo
onuSerialNumbers map[string]onuInfo //onu serial_number (string) -> OnuInfo
onuGemPortIds map[gemPortKey]onuInfo //GemPortId -> OnuInfo
packetInGemPort map[packetInInfoKey]uint32 //packet in gem port
}
func NewFlowManager(dh *DeviceHandler, rsrcMgr *rsrcMgr.OpenOltResourceMgr) *OpenOltFlowMgr {
log.Info("Initializing flow manager")
var flowMgr OpenOltFlowMgr
flowMgr.deviceHandler = dh
flowMgr.resourceMgr = rsrcMgr
if err := flowMgr.populateTechProfilePerPonPort(); err != nil {
log.Error("Error while populating tech profile mgr\n")
return nil
}
flowMgr.onuIds = make(map[onuIdKey]onuInfo)
flowMgr.onuSerialNumbers = make(map[string]onuInfo)
flowMgr.onuGemPortIds = make(map[gemPortKey]onuInfo)
flowMgr.packetInGemPort = make(map[packetInInfoKey]uint32)
log.Info("Initialization of flow manager success!!")
return &flowMgr
}
func (f *OpenOltFlowMgr) divideAndAddFlow(intfId uint32, onuId uint32, uniId uint32, portNo uint32, classifierInfo map[string]interface{}, actionInfo map[string]interface{}, flow *ofp.OfpFlowStats) {
var allocId []uint32
var gemPorts []uint32
log.Infow("Dividing flow", log.Fields{"intfId": intfId, "onuId": onuId, "uniId": uniId, "portNo": portNo, "classifier": classifierInfo, "action": actionInfo})
log.Infow("sorting flow", log.Fields{"intfId": intfId, "onuId": onuId, "uniId": uniId, "portNo": portNo,
"classifierInfo": classifierInfo, "actionInfo": actionInfo})
uni := getUniPortPath(intfId, onuId, uniId)
log.Debugw("Uni port name", log.Fields{"uni": uni})
allocId, gemPorts = f.createTcontGemports(intfId, onuId, uniId, uni, portNo, flow.GetTableId())
if allocId == nil || gemPorts == nil {
log.Error("alloc-id-gem-ports-unavailable")
return
}
/* Flows can't be added specific to gemport unless p-bits are received.
* Hence adding flows for all gemports
*/
for _, gemPort := range gemPorts {
if ipProto, ok := classifierInfo[IP_PROTO]; ok {
if ipProto.(uint32) == IP_PROTO_DHCP {
log.Info("Adding DHCP flow")
f.addDHCPTrapFlow(intfId, onuId, uniId, portNo, classifierInfo, actionInfo, flow, allocId[0], gemPort)
} else if ipProto == IP_PROTO_IGMP {
log.Info("igmp flow add ignored, not implemented yet")
} else {
log.Errorw("Invalid-Classifier-to-handle", log.Fields{"classifier": classifierInfo, "action": actionInfo})
//return errors.New("Invalid-Classifier-to-handle")
}
} else if ethType, ok := classifierInfo[ETH_TYPE]; ok {
if ethType.(uint32) == EAP_ETH_TYPE {
log.Info("Adding EAPOL flow")
f.addEAPOLFlow(intfId, onuId, uniId, portNo, flow, allocId[0], gemPort, DEFAULT_MGMT_VLAN)
if vlan := getSubscriberVlan(utils.GetInPort(flow)); vlan != 0 {
f.addEAPOLFlow(intfId, onuId, uniId, portNo, flow, allocId[0], gemPort, vlan)
}
// Send Techprofile download event to child device in go routine as it takes time
go f.sendTPDownloadMsgToChild(intfId, onuId, uniId, uni)
}
if ethType == LLDP_ETH_TYPE {
log.Info("Adding LLDP flow")
addLLDPFlow(flow, portNo)
}
} else if _, ok := actionInfo[PUSH_VLAN]; ok {
log.Info("Adding upstream data rule")
f.addUpstreamDataFlow(intfId, onuId, uniId, portNo, classifierInfo, actionInfo, flow, allocId[0], gemPort)
} else if _, ok := actionInfo[POP_VLAN]; ok {
log.Info("Adding Downstream data rule")
f.addDownstreamDataFlow(intfId, onuId, uniId, portNo, classifierInfo, actionInfo, flow, allocId[0], gemPort)
} else {
log.Errorw("Invalid-flow-type-to-handle", log.Fields{"classifier": classifierInfo, "action": actionInfo, "flow": flow})
}
}
}
// This function allocates tconts and GEM ports for an ONU, currently one TCONT is supported per ONU
func (f *OpenOltFlowMgr) createTcontGemports(intfId uint32, onuId uint32, uniId uint32, uni string, uniPort uint32, tableID uint32) ([]uint32, []uint32) {
var allocID []uint32
var gemPortIDs []uint32
//If we already have allocated earlier for this onu, render them
if tcontId := f.resourceMgr.GetCurrentAllocIDForOnu(intfId, onuId, uniId); tcontId != 0 {
allocID = append(allocID, tcontId)
}
gemPortIDs = f.resourceMgr.GetCurrentGEMPortIDsForOnu(intfId, onuId, uniId)
if len(allocID) != 0 && len(gemPortIDs) != 0 {
log.Debug("Rendered Tcont and GEM ports from resource manager", log.Fields{"intfId": intfId, "onuId": onuId, "uniPort": uniId,
"allocID": allocID, "gemPortIDs": gemPortIDs})
return allocID, gemPortIDs
}
log.Debug("Creating New TConts and Gem ports", log.Fields{"pon": intfId, "onu": onuId, "uni": uniId})
//FIXME: If table id is <= 63 using 64 as table id
if tableID < tp.DEFAULT_TECH_PROFILE_TABLE_ID {
tableID = tp.DEFAULT_TECH_PROFILE_TABLE_ID
}
tpPath := f.getTPpath(intfId, uni)
// Check tech profile instance already exists for derived port name
tech_profile_instance, err := f.techprofile[intfId].GetTPInstanceFromKVStore(tableID, tpPath)
if err != nil { // This should not happen, something wrong in KV backend transaction
log.Errorw("Error in fetching tech profile instance from KV store", log.Fields{"tableID": tableID, "path": tpPath})
return nil, nil
}
if tech_profile_instance == nil {
log.Info("Creating tech profile instance", log.Fields{"path": tpPath})
tech_profile_instance = f.techprofile[intfId].CreateTechProfInstance(tableID, uni, intfId)
if tech_profile_instance == nil {
log.Error("Tech-profile-instance-creation-failed")
return nil, nil
}
} else {
log.Debugw("Tech-profile-instance-already-exist-for-given port-name", log.Fields{"uni": uni})
}
// Get upstream and downstream scheduler protos
us_scheduler := f.techprofile[intfId].GetUsScheduler(tech_profile_instance)
ds_scheduler := f.techprofile[intfId].GetDsScheduler(tech_profile_instance)
// Get TCONTS protos
tconts := f.techprofile[intfId].GetTconts(tech_profile_instance, us_scheduler, ds_scheduler)
if len(tconts) == 0 {
log.Error("TCONTS not found ")
return nil, nil
}
log.Debugw("Sending Create tcont to device",
log.Fields{"onu": onuId, "uni": uniId, "portNo": "", "tconts": tconts})
if _, err := f.deviceHandler.Client.CreateTconts(context.Background(),
&openolt_pb2.Tconts{IntfId: intfId,
OnuId: onuId,
UniId: uniId,
PortNo: uniPort,
Tconts: tconts}); err != nil {
log.Errorw("Error while creating TCONT in device", log.Fields{"error": err})
return nil, nil
}
allocID = append(allocID, tech_profile_instance.UsScheduler.AllocID)
for _, gem := range tech_profile_instance.UpstreamGemPortAttributeList {
gemPortIDs = append(gemPortIDs, gem.GemportID)
}
log.Debugw("Allocated Tcont and GEM ports", log.Fields{"allocID": allocID, "gemports": gemPortIDs})
// Send Tconts and GEM ports to KV store
f.storeTcontsGEMPortsIntoKVStore(intfId, onuId, uniId, allocID, gemPortIDs)
return allocID, gemPortIDs
}
func (f *OpenOltFlowMgr) storeTcontsGEMPortsIntoKVStore(intfId uint32, onuId uint32, uniId uint32, allocID []uint32, gemPortIDs []uint32) {
log.Debugw("Storing allocated Tconts and GEM ports into KV store",
log.Fields{"intfId": intfId, "onuId": onuId, "uniId": uniId, "allocID": allocID, "gemPortIDs": gemPortIDs})
/* Update the allocated alloc_id and gem_port_id for the ONU/UNI to KV store */
if err := f.resourceMgr.UpdateAllocIdsForOnu(intfId, onuId, uniId, allocID); err != nil {
log.Error("Errow while uploading allocID to KV store")
}
if err := f.resourceMgr.UpdateGEMPortIDsForOnu(intfId, onuId, uniId, gemPortIDs); err != nil {
log.Error("Errow while uploading GEMports to KV store")
}
if err := f.resourceMgr.UpdateGEMportsPonportToOnuMapOnKVStore(gemPortIDs, intfId, onuId, uniId); err != nil {
log.Error("Errow while uploading gemtopon map to KV store")
}
log.Debug("Stored tconts and GEM into KV store successfully")
for _, gemPort := range gemPortIDs {
f.addGemPortToOnuInfoMap(intfId, onuId, gemPort)
}
}
func (f *OpenOltFlowMgr) populateTechProfilePerPonPort() error {
for _, techRange := range f.resourceMgr.DevInfo.Ranges {
for intfId := range techRange.IntfIds {
f.techprofile = append(f.techprofile, f.resourceMgr.ResourceMgrs[uint32(intfId)].TechProfileMgr)
}
}
//Make sure we have as many tech_profiles as there are pon ports on the device
if len(f.techprofile) != int(f.resourceMgr.DevInfo.GetPonPorts()) {
log.Errorw("Error while populating techprofile",
log.Fields{"numofTech": len(f.techprofile), "numPonPorts": f.resourceMgr.DevInfo.GetPonPorts()})
return errors.New("Error while populating techprofile mgrs")
}
log.Infow("Populated techprofile per ponport successfully",
log.Fields{"numofTech": len(f.techprofile), "numPonPorts": f.resourceMgr.DevInfo.GetPonPorts()})
return nil
}
func (f *OpenOltFlowMgr) addUpstreamDataFlow(intfId uint32, onuId uint32, uniId uint32,
portNo uint32, uplinkClassifier map[string]interface{},
uplinkAction map[string]interface{}, logicalFlow *ofp.OfpFlowStats,
allocId uint32, gemportId uint32) {
uplinkClassifier[PACKET_TAG_TYPE] = SINGLE_TAG
log.Debugw("Adding upstream data flow", log.Fields{"uplinkClassifier": uplinkClassifier, "uplinkAction": uplinkAction})
f.addHSIAFlow(intfId, onuId, uniId, portNo, uplinkClassifier, uplinkAction,
UPSTREAM, logicalFlow, allocId, gemportId)
/* TODO: Install Secondary EAP on the subscriber vlan */
}
func (f *OpenOltFlowMgr) addDownstreamDataFlow(intfId uint32, onuId uint32, uniId uint32,
portNo uint32, downlinkClassifier map[string]interface{},
downlinkAction map[string]interface{}, logicalFlow *ofp.OfpFlowStats,
allocId uint32, gemportId uint32) {
downlinkClassifier[PACKET_TAG_TYPE] = DOUBLE_TAG
log.Debugw("Adding downstream data flow", log.Fields{"downlinkClassifier": downlinkClassifier,
"downlinkAction": downlinkAction})
// Ignore private VLAN flow given by decomposer, cannot do anything with this flow
if uint32(downlinkClassifier[METADATA].(uint64)) == MkUniPortNum(intfId, onuId, uniId) &&
downlinkClassifier[VLAN_VID] == (uint32(ofp.OfpVlanId_OFPVID_PRESENT)|4000) {
log.Infow("EAPOL DL flow , Already added ,ignoring it", log.Fields{"downlinkClassifier": downlinkClassifier,
"downlinkAction": downlinkAction})
return
}
/* Already this info available classifier? */
downlinkAction[POP_VLAN] = true
downlinkAction[VLAN_VID] = downlinkClassifier[VLAN_VID]
f.addHSIAFlow(intfId, onuId, uniId, portNo, downlinkClassifier, downlinkAction,
DOWNSTREAM, logicalFlow, allocId, gemportId)
}
func (f *OpenOltFlowMgr) addHSIAFlow(intfId uint32, onuId uint32, uniId uint32, portNo uint32, classifier map[string]interface{},
action map[string]interface{}, direction string, logicalFlow *ofp.OfpFlowStats,
allocId uint32, gemPortId uint32) {
/* One of the OLT platform (Broadcom BAL) requires that symmetric
flows require the same flow_id to be used across UL and DL.
Since HSIA flow is the only symmetric flow currently, we need to
re-use the flow_id across both direction. The 'flow_category'
takes priority over flow_cookie to find any available HSIA_FLOW
id for the ONU.
*/
log.Debugw("Adding HSIA flow", log.Fields{"intfId": intfId, "onuId": onuId, "uniId": uniId, "classifier": classifier,
"action": action, "direction": direction, "allocId": allocId, "gemPortId": gemPortId,
"logicalFlow": *logicalFlow})
flowStoreCookie := getFlowStoreCookie(classifier, gemPortId)
flowId, err := f.resourceMgr.GetFlowID(intfId, onuId, uniId, flowStoreCookie, "HSIA")
if err != nil {
log.Errorw("Flow id unavailable for HSIA flow", log.Fields{"direction": direction})
return
}
var classifierProto *openolt_pb2.Classifier
var actionProto *openolt_pb2.Action
if classifierProto = makeOpenOltClassifierField(classifier); classifierProto == nil {
log.Error("Error in making classifier protobuf for hsia flow")
return
}
log.Debugw("Created classifier proto", log.Fields{"classifier": *classifierProto})
if actionProto = makeOpenOltActionField(action); actionProto == nil {
log.Errorw("Error in making action protobuf for hsia flow", log.Fields{"direction": direction})
return
}
log.Debugw("Created action proto", log.Fields{"action": *actionProto})
flow := openolt_pb2.Flow{AccessIntfId: int32(intfId),
OnuId: int32(onuId),
UniId: int32(uniId),
FlowId: flowId,
FlowType: direction,
AllocId: int32(allocId),
NetworkIntfId: DEFAULT_NETWORK_INTERFACE_ID, // one NNI port is supported now
GemportId: int32(gemPortId),
Classifier: classifierProto,
Action: actionProto,
Priority: int32(logicalFlow.Priority),
Cookie: logicalFlow.Cookie,
PortNo: portNo}
if ok := f.addFlowToDevice(&flow); ok {
log.Debug("HSIA flow added to device successfully", log.Fields{"direction": direction})
flowsToKVStore := f.getUpdatedFlowInfo(&flow, flowStoreCookie, "HSIA")
if err := f.updateFlowInfoToKVStore(flow.AccessIntfId,
flow.OnuId,
flow.UniId,
flow.FlowId, flowsToKVStore); err != nil {
log.Errorw("Error uploading HSIA flow into KV store", log.Fields{"flow": flow, "direction": direction, "error": err})
return
}
}
}
func (f *OpenOltFlowMgr) addDHCPTrapFlow(intfId uint32, onuId uint32, uniId uint32, portNo uint32, classifier map[string]interface{}, action map[string]interface{}, logicalFlow *ofp.OfpFlowStats, allocId uint32, gemPortId uint32) {
var dhcpFlow openolt_pb2.Flow
var actionProto *openolt_pb2.Action
var classifierProto *openolt_pb2.Classifier
// Clear the action map
for k := range action {
delete(action, k)
}
action[TRAP_TO_HOST] = true
classifier[UDP_SRC] = uint32(68)
classifier[UDP_DST] = uint32(67)
classifier[PACKET_TAG_TYPE] = SINGLE_TAG
delete(classifier, VLAN_VID)
flowStoreCookie := getFlowStoreCookie(classifier, gemPortId)
flowID, err := f.resourceMgr.GetFlowID(intfId, onuId, uniId, flowStoreCookie, "")
if err != nil {
log.Errorw("flowId unavailable for UL EAPOL", log.Fields{"intfId": intfId, "onuId": onuId, "flowStoreCookie": flowStoreCookie})
return
}
log.Debugw("Creating UL DHCP flow", log.Fields{"ul_classifier": classifier, "ul_action": action, "uplinkFlowId": flowID})
if classifierProto = makeOpenOltClassifierField(classifier); classifierProto == nil {
log.Error("Error in making classifier protobuf for ul flow")
return
}
log.Debugw("Created classifier proto", log.Fields{"classifier": *classifierProto})
if actionProto = makeOpenOltActionField(action); actionProto == nil {
log.Error("Error in making action protobuf for ul flow")
return
}
dhcpFlow = openolt_pb2.Flow{AccessIntfId: int32(intfId),
OnuId: int32(onuId),
UniId: int32(uniId),
FlowId: flowID,
FlowType: UPSTREAM,
AllocId: int32(allocId),
NetworkIntfId: DEFAULT_NETWORK_INTERFACE_ID, // one NNI port is supported now
GemportId: int32(gemPortId),
Classifier: classifierProto,
Action: actionProto,
Priority: int32(logicalFlow.Priority),
Cookie: logicalFlow.Cookie,
PortNo: portNo}
if ok := f.addFlowToDevice(&dhcpFlow); ok {
log.Debug("DHCP UL flow added to device successfully")
flowsToKVStore := f.getUpdatedFlowInfo(&dhcpFlow, flowStoreCookie, "DHCP")
if err := f.updateFlowInfoToKVStore(dhcpFlow.AccessIntfId,
dhcpFlow.OnuId,
dhcpFlow.UniId,
dhcpFlow.FlowId, flowsToKVStore); err != nil {
log.Errorw("Error uploading DHCP UL flow into KV store", log.Fields{"flow": dhcpFlow, "error": err})
return
}
}
return
}
// Add EAPOL to device
func (f *OpenOltFlowMgr) addEAPOLFlow(intfId uint32, onuId uint32, uniId uint32, portNo uint32, logicalFlow *ofp.OfpFlowStats, allocId uint32, gemPortId uint32, vlanId uint32) {
log.Debugw("Adding EAPOL to device", log.Fields{"intfId": intfId, "onuId": onuId, "portNo": portNo, "allocId": allocId, "gemPortId": gemPortId, "vlanId": vlanId, "flow": logicalFlow})
uplinkClassifier := make(map[string]interface{})
uplinkAction := make(map[string]interface{})
downlinkClassifier := make(map[string]interface{})
downlinkAction := make(map[string]interface{})
var upstreamFlow openolt_pb2.Flow
var downstreamFlow openolt_pb2.Flow
// Fill Classfier
uplinkClassifier[ETH_TYPE] = uint32(EAP_ETH_TYPE)
uplinkClassifier[PACKET_TAG_TYPE] = SINGLE_TAG
uplinkClassifier[VLAN_VID] = vlanId
// Fill action
uplinkAction[TRAP_TO_HOST] = true
flowStoreCookie := getFlowStoreCookie(uplinkClassifier, gemPortId)
//Add Uplink EAPOL Flow
uplinkFlowId, err := f.resourceMgr.GetFlowID(intfId, onuId, uniId, flowStoreCookie, "")
if err != nil {
log.Errorw("flowId unavailable for UL EAPOL", log.Fields{"intfId": intfId, "onuId": onuId, "flowStoreCookie": flowStoreCookie})
return
}
var classifierProto *openolt_pb2.Classifier
var actionProto *openolt_pb2.Action
log.Debugw("Creating UL EAPOL flow", log.Fields{"ul_classifier": uplinkClassifier, "ul_action": uplinkAction, "uplinkFlowId": uplinkFlowId})
if classifierProto = makeOpenOltClassifierField(uplinkClassifier); classifierProto == nil {
log.Error("Error in making classifier protobuf for ul flow")
return
}
log.Debugw("Created classifier proto", log.Fields{"classifier": *classifierProto})
if actionProto = makeOpenOltActionField(uplinkAction); actionProto == nil {
log.Error("Error in making action protobuf for ul flow")
return
}
log.Debugw("Created action proto", log.Fields{"action": *actionProto})
upstreamFlow = openolt_pb2.Flow{AccessIntfId: int32(intfId),
OnuId: int32(onuId),
UniId: int32(uniId),
FlowId: uplinkFlowId,
FlowType: UPSTREAM,
AllocId: int32(allocId),
NetworkIntfId: DEFAULT_NETWORK_INTERFACE_ID, // one NNI port is supported now
GemportId: int32(gemPortId),
Classifier: classifierProto,
Action: actionProto,
Priority: int32(logicalFlow.Priority),
Cookie: logicalFlow.Cookie,
PortNo: portNo}
if ok := f.addFlowToDevice(&upstreamFlow); ok {
log.Debug("EAPOL UL flow added to device successfully")
flowsToKVStore := f.getUpdatedFlowInfo(&upstreamFlow, flowStoreCookie, "EAPOL")
if err := f.updateFlowInfoToKVStore(upstreamFlow.AccessIntfId,
upstreamFlow.OnuId,
upstreamFlow.UniId,
upstreamFlow.FlowId, flowsToKVStore); err != nil {
log.Errorw("Error uploading EAPOL UL flow into KV store", log.Fields{"flow": upstreamFlow, "error": err})
return
}
}
if vlanId == DEFAULT_MGMT_VLAN {
/* Add Downstream EAPOL Flow, Only for first EAP flow (BAL
# requirement)
# On one of the platforms (Broadcom BAL), when same DL classifier
# vlan was used across multiple ONUs, eapol flow re-adds after
# flow delete (cases of onu reboot/disable) fails.
# In order to generate unique vlan, a combination of intf_id
# onu_id and uniId is used.
# uniId defaults to 0, so add 1 to it.
*/
log.Debugw("Creating DL EAPOL flow with default vlan", log.Fields{"vlan": vlanId})
specialVlanDlFlow := 4090 - intfId*onuId*(uniId+1)
// Assert that we do not generate invalid vlans under no condition
if specialVlanDlFlow <= 2 {
log.Fatalw("invalid-vlan-generated", log.Fields{"vlan": specialVlanDlFlow})
return
}
log.Debugw("specialVlanEAPOLDlFlow:", log.Fields{"dl_vlan": specialVlanDlFlow})
// Fill Classfier
downlinkClassifier[PACKET_TAG_TYPE] = SINGLE_TAG
downlinkClassifier[VLAN_VID] = uint32(specialVlanDlFlow)
// Fill action
downlinkAction[PUSH_VLAN] = true
downlinkAction[VLAN_VID] = vlanId
flowStoreCookie := getFlowStoreCookie(downlinkClassifier, gemPortId)
downlinkFlowId, err := f.resourceMgr.GetFlowID(intfId, onuId, uniId, flowStoreCookie, "")
if err != nil {
log.Errorw("flowId unavailable for DL EAPOL",
log.Fields{"intfId": intfId, "onuId": onuId, "flowStoreCookie": flowStoreCookie})
return
}
log.Debugw("Creating DL EAPOL flow",
log.Fields{"dl_classifier": downlinkClassifier, "dl_action": downlinkAction, "downlinkFlowId": downlinkFlowId})
if classifierProto = makeOpenOltClassifierField(downlinkClassifier); classifierProto == nil {
log.Error("Error in making classifier protobuf for downlink flow")
return
}
if actionProto = makeOpenOltActionField(downlinkAction); actionProto == nil {
log.Error("Error in making action protobuf for dl flow")
return
}
// Downstream flow in grpc protobuf
downstreamFlow = openolt_pb2.Flow{AccessIntfId: int32(intfId),
OnuId: int32(onuId),
UniId: int32(uniId),
FlowId: downlinkFlowId,
FlowType: DOWNSTREAM,
AllocId: int32(allocId),
NetworkIntfId: DEFAULT_NETWORK_INTERFACE_ID,
GemportId: int32(gemPortId),
Classifier: classifierProto,
Action: actionProto,
Priority: int32(logicalFlow.Priority),
Cookie: logicalFlow.Cookie,
PortNo: portNo}
if ok := f.addFlowToDevice(&downstreamFlow); ok {
log.Debug("EAPOL DL flow added to device successfully")
flowsToKVStore := f.getUpdatedFlowInfo(&downstreamFlow, flowStoreCookie, "")
if err := f.updateFlowInfoToKVStore(downstreamFlow.AccessIntfId,
downstreamFlow.OnuId,
downstreamFlow.UniId,
downstreamFlow.FlowId, flowsToKVStore); err != nil {
log.Errorw("Error uploading EAPOL DL flow into KV store", log.Fields{"flow": upstreamFlow, "error": err})
return
}
}
} else {
log.Infow("EAPOL flow with non-default mgmt vlan is not supported", log.Fields{"vlanId": vlanId})
return
}
log.Debugw("Added EAPOL flows to device successfully", log.Fields{"flow": logicalFlow})
}
func makeOpenOltClassifierField(classifierInfo map[string]interface{}) *openolt_pb2.Classifier {
var classifier openolt_pb2.Classifier
if etherType, ok := classifierInfo[ETH_TYPE]; ok {
classifier.EthType = etherType.(uint32)
}
if ipProto, ok := classifierInfo[IP_PROTO]; ok {
classifier.IpProto = ipProto.(uint32)
}
if vlanId, ok := classifierInfo[VLAN_VID]; ok {
classifier.OVid = (vlanId.(uint32)) & 0xFFF
}
if metadata, ok := classifierInfo[METADATA]; ok { // TODO: Revisit
classifier.IVid = uint32(metadata.(uint64))
}
if vlanPcp, ok := classifierInfo[VLAN_PCP]; ok {
classifier.OPbits = vlanPcp.(uint32)
}
if udpSrc, ok := classifierInfo[UDP_SRC]; ok {
classifier.SrcPort = udpSrc.(uint32)
}
if udpDst, ok := classifierInfo[UDP_DST]; ok {
classifier.DstPort = udpDst.(uint32)
}
if ipv4Dst, ok := classifierInfo[IPV4_DST]; ok {
classifier.DstIp = ipv4Dst.(uint32)
}
if ipv4Src, ok := classifierInfo[IPV4_SRC]; ok {
classifier.SrcIp = ipv4Src.(uint32)
}
if pktTagType, ok := classifierInfo[PACKET_TAG_TYPE]; ok {
if pktTagType.(string) == SINGLE_TAG {
classifier.PktTagType = SINGLE_TAG
} else if pktTagType.(string) == DOUBLE_TAG {
classifier.PktTagType = DOUBLE_TAG
} else if pktTagType.(string) == UNTAGGED {
classifier.PktTagType = UNTAGGED
} else {
log.Error("Invalid tag type in classifier") // should not hit
return nil
}
}
return &classifier
}
func makeOpenOltActionField(actionInfo map[string]interface{}) *openolt_pb2.Action {
var actionCmd openolt_pb2.ActionCmd
var action openolt_pb2.Action
action.Cmd = &actionCmd
if _, ok := actionInfo[POP_VLAN]; ok {
action.OVid = actionInfo[VLAN_VID].(uint32)
action.Cmd.RemoveOuterTag = true
} else if _, ok := actionInfo[PUSH_VLAN]; ok {
action.OVid = actionInfo[VLAN_VID].(uint32)
action.Cmd.AddOuterTag = true
} else if _, ok := actionInfo[TRAP_TO_HOST]; ok {
action.Cmd.TrapToHost = actionInfo[TRAP_TO_HOST].(bool)
} else {
log.Errorw("Invalid-action-field", log.Fields{"action": actionInfo})
return nil
}
return &action
}
func (f *OpenOltFlowMgr) getTPpath(intfId uint32, uni string) string {
/*
FIXME
Should get Table id form the flow, as of now hardcoded to DEFAULT_TECH_PROFILE_TABLE_ID (64)
'tp_path' contains the suffix part of the tech_profile_instance path. The prefix to the 'tp_path' should be set to
TechProfile.KV_STORE_TECH_PROFILE_PATH_PREFIX by the ONU adapter.
*/
return f.techprofile[intfId].GetTechProfileInstanceKVPath(tp.DEFAULT_TECH_PROFILE_TABLE_ID, uni)
}
func getFlowStoreCookie(classifier map[string]interface{}, gemPortId uint32) uint64 {
if len(classifier) == 0 { // should never happen
log.Error("Invalid classfier object")
return 0
}
var jsonData []byte
var flowString string
var err error
// TODO: Do we need to marshall ??
if jsonData, err = json.Marshal(classifier); err != nil {
log.Error("Failed to encode classifier")
return 0
}
flowString = string(jsonData)
if gemPortId != 0 {
flowString = fmt.Sprintf("%s%s", string(jsonData), string(gemPortId))
}
h := md5.New()
h.Write([]byte(flowString))
hash := big.NewInt(0)
hash.SetBytes(h.Sum(nil))
return hash.Uint64()
}
func (f *OpenOltFlowMgr) getUpdatedFlowInfo(flow *openolt_pb2.Flow, flowStoreCookie uint64, flowCategory string) *[]rsrcMgr.FlowInfo {
var flows []rsrcMgr.FlowInfo = []rsrcMgr.FlowInfo{rsrcMgr.FlowInfo{Flow: flow, FlowCategory: flowCategory, FlowStoreCookie: flowStoreCookie}}
var intfId uint32
/* For flows which trap out of the NNI, the AccessIntfId is invalid
(set to -1). In such cases, we need to refer to the NetworkIntfId .
*/
if flow.AccessIntfId != -1 {
intfId = uint32(flow.AccessIntfId)
} else {
intfId = uint32(flow.NetworkIntfId)
}
// Get existing flows matching flowid for given subscriber from KV store
existingFlows := f.resourceMgr.GetFlowIDInfo(intfId, uint32(flow.OnuId), uint32(flow.UniId), flow.FlowId)
if existingFlows != nil {
log.Debugw("Flow exists for given flowID, appending it to current flow", log.Fields{"flowID": flow.FlowId})
for _, f := range *existingFlows {
flows = append(flows, f)
}
}
log.Debugw("Updated flows for given flowID and onuid", log.Fields{"updatedflow": flows, "flowid": flow.FlowId, "onu": flow.OnuId})
return &flows
}
func (f *OpenOltFlowMgr) updateFlowInfoToKVStore(intfId int32, onuId int32, uniId int32, flowId uint32, flows *[]rsrcMgr.FlowInfo) error {
log.Debugw("Storing flow(s) into KV store", log.Fields{"flows": *flows})
if err := f.resourceMgr.UpdateFlowIDInfo(intfId, onuId, uniId, flowId, flows); err != nil {
log.Debug("Error while Storing flow into KV store")
return err
}
log.Info("Stored flow(s) into KV store successfully!")
return nil
}
func (f *OpenOltFlowMgr) addFlowToDevice(deviceFlow *openolt_pb2.Flow) bool {
log.Debugw("Sending flow to device via grpc", log.Fields{"flow": *deviceFlow})
_, err := f.deviceHandler.Client.FlowAdd(context.Background(), deviceFlow)
if err != nil {
log.Errorw("Failed to Add flow to device", log.Fields{"err": err, "deviceFlow": deviceFlow})
return false
}
log.Debugw("Flow added to device successfuly ", log.Fields{"flow": *deviceFlow})
return true
}
/*func register_flow(deviceFlow *openolt_pb2.Flow, logicalFlow *ofp.OfpFlowStats){
//update core flows_proxy : flows_proxy.update('/', flows)
}
func generateStoredId(flowId uint32, direction string)uint32{
if direction == UPSTREAM{
log.Debug("Upstream flow shifting flowid")
return ((0x1 << 15) | flowId)
}else if direction == DOWNSTREAM{
log.Debug("Downstream flow not shifting flowid")
return flowId
}else{
log.Errorw("Unrecognized direction",log.Fields{"direction": direction})
return flowId
}
}
*/
func addLLDPFlow(flow *ofp.OfpFlowStats, portNo uint32) {
log.Info("Unimplemented")
}
func getUniPortPath(intfId uint32, onuId uint32, uniId uint32) string {
return fmt.Sprintf("pon-{%d}/onu-{%d}/uni-{%d}", intfId, onuId, uniId)
}
func (f *OpenOltFlowMgr) getOnuChildDevice(intfId uint32, onuId uint32) (*voltha.Device, error) {
log.Debugw("GetChildDevice", log.Fields{"pon port": intfId, "onuId": onuId})
parentPortNo := IntfIdToPortNo(intfId, voltha.Port_PON_OLT)
onuDevice := f.deviceHandler.GetChildDevice(parentPortNo, onuId)
if onuDevice == nil {
log.Errorw("onu not found", log.Fields{"intfId": parentPortNo, "onuId": onuId})
return nil, errors.New("onu not found")
}
log.Debugw("Successfully received child device from core", log.Fields{"child_device": *onuDevice})
return onuDevice, nil
}
func findNextFlow(flow *ofp.OfpFlowStats) *ofp.OfpFlowStats {
log.Info("Unimplemented")
return nil
}
func getSubscriberVlan(inPort uint32) uint32 {
/* For EAPOL case we will use default VLAN , so will implement later if required */
log.Info("Unimplemented")
return 0
}
func (f *OpenOltFlowMgr) clear_flows_and_scheduler_for_logical_port(childDevice *voltha.Device, logicalPort *voltha.LogicalPort) {
log.Info("Unimplemented")
}
func (f *OpenOltFlowMgr) AddFlow(flow *ofp.OfpFlowStats) {
classifierInfo := make(map[string]interface{}, 0)
actionInfo := make(map[string]interface{}, 0)
log.Debug("Adding Flow", log.Fields{"flow": flow})
for _, field := range utils.GetOfbFields(flow) {
if field.Type == utils.ETH_TYPE {
classifierInfo[ETH_TYPE] = field.GetEthType()
log.Debug("field-type-eth-type", log.Fields{"classifierInfo[ETH_TYPE]": classifierInfo[ETH_TYPE].(uint32)})
} else if field.Type == utils.IP_PROTO {
classifierInfo[IP_PROTO] = field.GetIpProto()
log.Debug("field-type-ip-proto", log.Fields{"classifierInfo[IP_PROTO]": classifierInfo[IP_PROTO].(uint32)})
} else if field.Type == utils.IN_PORT {
classifierInfo[IN_PORT] = field.GetPort()
log.Debug("field-type-in-port", log.Fields{"classifierInfo[IN_PORT]": classifierInfo[IN_PORT].(uint32)})
} else if field.Type == utils.VLAN_VID {
classifierInfo[VLAN_VID] = field.GetVlanVid()
log.Debug("field-type-vlan-vid", log.Fields{"classifierInfo[VLAN_VID]": classifierInfo[VLAN_VID].(uint32)})
} else if field.Type == utils.VLAN_PCP {
classifierInfo[VLAN_PCP] = field.GetVlanPcp()
log.Debug("field-type-vlan-pcp", log.Fields{"classifierInfo[VLAN_PCP]": classifierInfo[VLAN_PCP].(uint32)})
} else if field.Type == utils.UDP_DST {
classifierInfo[UDP_DST] = field.GetUdpDst()
log.Debug("field-type-udp-dst", log.Fields{"classifierInfo[UDP_DST]": classifierInfo[UDP_DST].(uint32)})
} else if field.Type == utils.UDP_SRC {
classifierInfo[UDP_SRC] = field.GetUdpSrc()
log.Debug("field-type-udp-src", log.Fields{"classifierInfo[UDP_SRC]": classifierInfo[UDP_SRC].(uint32)})
} else if field.Type == utils.IPV4_DST {
classifierInfo[IPV4_DST] = field.GetIpv4Dst()
log.Debug("field-type-ipv4-dst", log.Fields{"classifierInfo[IPV4_DST]": classifierInfo[IPV4_DST].(uint32)})
} else if field.Type == utils.IPV4_SRC {
classifierInfo[IPV4_SRC] = field.GetIpv4Src()
log.Debug("field-type-ipv4-src", log.Fields{"classifierInfo[IPV4_SRC]": classifierInfo[IPV4_SRC].(uint32)})
} else if field.Type == utils.METADATA {
classifierInfo[METADATA] = field.GetTableMetadata()
log.Debug("field-type-metadata", log.Fields{"classifierInfo[METADATA]": classifierInfo[METADATA].(uint64)})
} else if field.Type == utils.TUNNEL_ID {
classifierInfo[TUNNEL_ID] = field.GetTunnelId()
log.Debug("field-type-tunnelId", log.Fields{"classifierInfo[TUNNEL_ID]": classifierInfo[TUNNEL_ID].(uint64)})
} else {
log.Errorw("Un supported field type", log.Fields{"type": field.Type})
return
}
}
for _, action := range utils.GetActions(flow) {
if action.Type == utils.OUTPUT {
if out := action.GetOutput(); out != nil {
actionInfo[OUTPUT] = out.GetPort()
log.Debugw("action-type-output", log.Fields{"out_port": actionInfo[OUTPUT].(uint32)})
} else {
log.Error("Invalid output port in action")
return
}
} else if action.Type == utils.POP_VLAN {
actionInfo[POP_VLAN] = true
log.Debugw("action-type-pop-vlan", log.Fields{"in_port": classifierInfo[IN_PORT].(uint32)})
} else if action.Type == utils.PUSH_VLAN {
if out := action.GetPush(); out != nil {
if tpid := out.GetEthertype(); tpid != 0x8100 {
log.Errorw("Invalid ethertype in push action", log.Fields{"ethertype": actionInfo[PUSH_VLAN].(int32)})
} else {
actionInfo[PUSH_VLAN] = true
actionInfo[TPID] = tpid
log.Debugw("action-type-push-vlan",
log.Fields{"push_tpid": actionInfo[TPID].(uint32), "in_port": classifierInfo[IN_PORT].(uint32)})
}
}
} else if action.Type == utils.SET_FIELD {
if out := action.GetSetField(); out != nil {
if field := out.GetField(); field != nil {
if ofClass := field.GetOxmClass(); ofClass != ofp.OfpOxmClass_OFPXMC_OPENFLOW_BASIC {
log.Errorw("Invalid openflow class", log.Fields{"class": ofClass})
return
}
/*log.Debugw("action-type-set-field",log.Fields{"field": field, "in_port": classifierInfo[IN_PORT].(uint32)})*/
if ofbField := field.GetOfbField(); ofbField != nil {
if fieldtype := ofbField.GetType(); fieldtype == ofp.OxmOfbFieldTypes_OFPXMT_OFB_VLAN_VID {
if vlan := ofbField.GetVlanVid(); vlan != 0 {
actionInfo[VLAN_VID] = vlan & 0xfff
log.Debugw("action-set-vlan-vid", log.Fields{"actionInfo[VLAN_VID]": actionInfo[VLAN_VID].(uint32)})
} else {
log.Error("No Invalid vlan id in set vlan-vid action")
}
} else {
log.Errorw("unsupported-action-set-field-type", log.Fields{"type": fieldtype})
}
}
}
}
} else {
log.Errorw("Un supported action type", log.Fields{"type": action.Type})
return
}
}
/* Controller bound trap flows */
if isControllerFlow := IsControllerBoundFlow(actionInfo[OUTPUT].(uint32)); isControllerFlow {
log.Debug("Controller bound trap flows, getting inport from tunnelid")
/* Get UNI port/ IN Port from tunnel ID field for upstream controller bound flows */
if portType := IntfIdToPortTypeName(classifierInfo[IN_PORT].(uint32)); portType == voltha.Port_PON_OLT {
if uniPort := utils.GetChildPortFromTunnelId(flow); uniPort != 0 {
classifierInfo[IN_PORT] = uniPort
log.Debugw("upstream pon-to-controller-flow,inport-in-tunnelid", log.Fields{"newInPort": classifierInfo[IN_PORT].(uint32), "outPort": actionInfo[OUTPUT].(uint32)})
} else {
log.Error("upstream pon-to-controller-flow, NO-inport-in-tunnelid")
return
}
}
} else {
log.Debug("Non-Controller flows, getting uniport from tunnelid")
// Downstream flow from NNI to PON port , Use tunnel ID as new OUT port / UNI port
if portType := IntfIdToPortTypeName(actionInfo[OUTPUT].(uint32)); portType == voltha.Port_PON_OLT {
if uniPort := utils.GetChildPortFromTunnelId(flow); uniPort != 0 {
actionInfo[OUTPUT] = uniPort
log.Debugw("downstream-nni-to-pon-port-flow, outport-in-tunnelid", log.Fields{"newOutPort": actionInfo[OUTPUT].(uint32), "outPort": actionInfo[OUTPUT].(uint32)})
} else {
log.Debug("downstream-nni-to-pon-port-flow, no-outport-in-tunnelid", log.Fields{"InPort": classifierInfo[IN_PORT].(uint32), "outPort": actionInfo[OUTPUT].(uint32)})
return
}
// Upstream flow from PON to NNI port , Use tunnel ID as new IN port / UNI port
} else if portType := IntfIdToPortTypeName(classifierInfo[IN_PORT].(uint32)); portType == voltha.Port_PON_OLT {
if uniPort := utils.GetChildPortFromTunnelId(flow); uniPort != 0 {
classifierInfo[IN_PORT] = uniPort
log.Debugw("upstream-pon-to-nni-port-flow, inport-in-tunnelid", log.Fields{"newInPort": actionInfo[OUTPUT].(uint32),
"outport": actionInfo[OUTPUT].(uint32)})
} else {
log.Debug("upstream-pon-to-nni-port-flow, no-inport-in-tunnelid", log.Fields{"InPort": classifierInfo[IN_PORT].(uint32),
"outPort": actionInfo[OUTPUT].(uint32)})
return
}
}
}
log.Infow("Flow ports", log.Fields{"classifierInfo_inport": classifierInfo[IN_PORT], "action_output": actionInfo[OUTPUT]})
portNo, intfId, onuId, uniId := ExtractAccessFromFlow(classifierInfo[IN_PORT].(uint32), actionInfo[OUTPUT].(uint32))
if ipProto, ok := classifierInfo[IP_PROTO]; ok {
if ipProto.(uint32) == IP_PROTO_DHCP {
if udpSrc, ok := classifierInfo[UDP_SRC]; ok {
if udpSrc.(uint32) == uint32(67) {
log.Debug("trap-dhcp-from-nni-flow")
f.addDHCPTrapFlowOnNNI(flow, classifierInfo, portNo)
return
}
}
}
}
f.divideAndAddFlow(intfId, onuId, uniId, portNo, classifierInfo, actionInfo, flow)
}
func (f *OpenOltFlowMgr) sendTPDownloadMsgToChild(intfId uint32, onuId uint32, uniId uint32, uni string) error {
onuDevice, err := f.getOnuChildDevice(intfId, onuId)
if err != nil {
log.Errorw("Error while fetching Child device from core", log.Fields{"onuId": onuId})
return err
}
log.Debugw("Got child device from OLT device handler", log.Fields{"device": *onuDevice})
tpPath := f.getTPpath(intfId, uni)
tpDownloadMsg := &ic.InterAdapterTechProfileDownloadMessage{UniId: uniId, Path: tpPath}
log.Infow("Sending Load-tech-profile-request-to-brcm-onu-adapter", log.Fields{"msg": *tpDownloadMsg})
sendErr := f.deviceHandler.AdapterProxy.SendInterAdapterMessage(context.Background(),
tpDownloadMsg,
ic.InterAdapterMessageType_TECH_PROFILE_DOWNLOAD_REQUEST,
f.deviceHandler.deviceType,
onuDevice.Type,
onuDevice.Id,
onuDevice.ProxyAddress.DeviceId, "")
if sendErr != nil {
log.Errorw("send techprofile-download request error", log.Fields{"fromAdapter": f.deviceHandler.deviceType,
"toAdapter": onuDevice.Type, "onuId": onuDevice.Id,
"proxyDeviceId": onuDevice.ProxyAddress.DeviceId})
return sendErr
}
log.Debugw("success Sending Load-tech-profile-request-to-brcm-onu-adapter", log.Fields{"msg": tpDownloadMsg})
return nil
}
// This function adds onu info to cache
func (f *OpenOltFlowMgr) UpdateOnuInfo(intfID uint32, onuID uint32, serialNum string) {
onu := onuInfo{intfId: intfID, onuId: onuID, serialNumber: serialNum}
onuIDkey := onuIdKey{intfId: intfID, onuId: onuID}
f.onuIds[onuIDkey] = onu
log.Debugw("Updated onuinfo", log.Fields{"intfID": intfID, "onuID": onuID, "serialNum": serialNum})
}
// This function stores adds GEMport to ONU map
func (f *OpenOltFlowMgr) addGemPortToOnuInfoMap(intfId uint32, onuId uint32, gemPort uint32) {
onuIDkey := onuIdKey{intfId: intfId, onuId: onuId}
if val, ok := f.onuIds[onuIDkey]; ok {
onuInfo := val
gemPortKey := gemPortKey{intfId: intfId, gemPort: gemPort}
f.onuGemPortIds[gemPortKey] = onuInfo
log.Debugw("Cached Gemport to Onuinfo map", log.Fields{"GemPort": gemPort, "intfId": onuInfo.intfId, "onuId": onuInfo.onuId})
return
}
log.Errorw("OnuInfo not found", log.Fields{"intfId": intfId, "onuId": onuId, "gemPort": gemPort})
}
// This function Lookup maps by serialNumber or (intfId, gemPort)
// Returns OnuID,nil if found or set 0,error if no onuId is found for serialNumber or (intfId, gemPort)
func (f *OpenOltFlowMgr) getOnuIdfromGemPortMap(serialNumber string, intfId uint32, gemPortId uint32) (uint32, error) {
log.Debugw("Getting ONU ID from GEM port and PON port", log.Fields{"serialNumber": serialNumber, "intfId": intfId, "gemPortId": gemPortId})
if serialNumber != "" {
if onuInfo, ok := f.onuSerialNumbers[serialNumber]; ok {
return onuInfo.onuId, nil
}
} else {
gemPortKey := gemPortKey{intfId: intfId, gemPort: gemPortId}
if onuInfo, ok := f.onuGemPortIds[gemPortKey]; ok {
log.Debugw("Retrived onu info from access", log.Fields{"intfId": intfId, "gemPortId": gemPortId, "onuId": onuInfo.onuId})
return onuInfo.onuId, nil
}
}
log.Errorw("ONU ID is not found", log.Fields{"serialNumber": serialNumber, "intfId": intfId, "gemPort": gemPortId})
return uint32(0), errors.New("Key Error ,ONU ID is not found") // ONU ID 0 is not a valid one
}
// This function computes logical port UNI/NNI port from packet-in indication and returns the same
func (f *OpenOltFlowMgr) GetLogicalPortFromPacketIn(packetIn *openolt_pb2.PacketIndication) (uint32, error) {
var logicalPortNum uint32
var onuId uint32
var err error
if packetIn.IntfType == "pon" {
// packet indication does not have serial number , so sending as nil
if onuId, err = f.getOnuIdfromGemPortMap("", packetIn.IntfId, packetIn.GemportId); err != nil {
log.Errorw("Unable to get ONU ID from GEM/PON port", log.Fields{"pon port": packetIn.IntfId, "gemport": packetIn.GemportId})
return logicalPortNum, err
}
if packetIn.PortNo != 0 {
logicalPortNum = packetIn.PortNo
} else {
uniId := uint32(0) // FIXME - multi-uni support
logicalPortNum = MkUniPortNum(packetIn.IntfId, onuId, uniId)
}
// Store the gem port through which the packet_in came. Use the same gem port for packet_out
pktInkey := packetInInfoKey{intfId: packetIn.IntfId, onuId: onuId, logicalPort: logicalPortNum}
f.packetInGemPort[pktInkey] = packetIn.GemportId
} else if packetIn.IntfType == "nni" {
logicalPortNum = IntfIdToPortNo(packetIn.IntfId, voltha.Port_ETHERNET_NNI)
}
log.Debugw("Retrieved logicalport from packet-in", log.Fields{"logicalPortNum": logicalPortNum, "IntfType": packetIn.IntfType})
return logicalPortNum, nil
}
func (f *OpenOltFlowMgr) GetPacketOutGemPortId(intfId uint32, onuId uint32, portNum uint32) (uint32, error) {
var gemPortId uint32
var err error
key := packetInInfoKey{intfId: intfId, onuId: onuId, logicalPort: portNum}
if val, ok := f.packetInGemPort[key]; ok {
gemPortId = val
} else {
log.Errorw("Key-Error while fetching packet-out GEM port", log.Fields{"key": key})
err = errors.New("Key-Error while fetching packet-out GEM port")
}
return gemPortId, err
}
func (f *OpenOltFlowMgr) addDHCPTrapFlowOnNNI(logicalFlow *ofp.OfpFlowStats, classifier map[string]interface{}, portNo uint32) {
log.Debug("Adding trap-dhcp-of-nni-flow")
action := make(map[string]interface{})
classifier[PACKET_TAG_TYPE] = DOUBLE_TAG
action[TRAP_TO_HOST] = true
/* We manage flowId resource pool on per PON port basis.
Since this situation is tricky, as a hack, we pass the NNI port
index (network_intf_id) as PON port Index for the flowId resource
pool. Also, there is no ONU Id available for trapping DHCP packets
on NNI port, use onu_id as -1 (invalid)
****************** CAVEAT *******************
This logic works if the NNI Port Id falls within the same valid
range of PON Port Ids. If this doesn't work for some OLT Vendor
we need to have a re-look at this.
*********************************************
*/
onuId := -1
uniId := -1
gemPortId := -1
allocId := -1
networkInterfaceId := DEFAULT_NETWORK_INTERFACE_ID
flowStoreCookie := getFlowStoreCookie(classifier, uint32(0))
if present := f.resourceMgr.IsFlowCookieOnKVStore(uint32(networkInterfaceId), uint32(onuId), uint32(uniId), flowStoreCookie); present {
log.Debug("Flow-exists--not-re-adding")
return
}
flowId, err := f.resourceMgr.GetFlowID(uint32(networkInterfaceId), uint32(onuId), uint32(uniId), flowStoreCookie, "")
if err != nil {
log.Errorw("Flow id unavailable for DHCP traponNNI flow", log.Fields{"error": err})
return
}
var classifierProto *openolt_pb2.Classifier
var actionProto *openolt_pb2.Action
if classifierProto = makeOpenOltClassifierField(classifier); classifierProto == nil {
log.Error("Error in making classifier protobuf for dhcp trap on nni flow")
return
}
log.Debugw("Created classifier proto", log.Fields{"classifier": *classifierProto})
if actionProto = makeOpenOltActionField(action); actionProto == nil {
log.Error("Error in making action protobuf for dhcp trap on nni flow")
return
}
log.Debugw("Created action proto", log.Fields{"action": *actionProto})
downstreamflow := openolt_pb2.Flow{AccessIntfId: int32(-1), // AccessIntfId not required
OnuId: int32(onuId), // OnuId not required
UniId: int32(uniId), // UniId not used
FlowId: flowId,
FlowType: DOWNSTREAM,
AllocId: int32(allocId), // AllocId not used
NetworkIntfId: DEFAULT_NETWORK_INTERFACE_ID, // one NNI port is supported now
GemportId: int32(gemPortId), // GemportId not used
Classifier: classifierProto,
Action: actionProto,
Priority: int32(logicalFlow.Priority),
Cookie: logicalFlow.Cookie,
PortNo: portNo}
if ok := f.addFlowToDevice(&downstreamflow); ok {
log.Debug("DHCP trap on NNI flow added to device successfully")
flowsToKVStore := f.getUpdatedFlowInfo(&downstreamflow, flowStoreCookie, "")
if err := f.updateFlowInfoToKVStore(int32(networkInterfaceId),
int32(onuId),
int32(uniId),
flowId, flowsToKVStore); err != nil {
log.Errorw("Error uploading DHCP DL flow into KV store", log.Fields{"flow": downstreamflow, "error": err})
}
}
return
}