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/*
* 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 (voltha "github.com/opencord/voltha-go/protos/voltha");
/*=====================================================================
Flow id
Identifies a flow within a single OLT
Flow Id is unique per OLT
Multiple GEM ports can map to same flow id
13 11 4 0
+--------+--------------+------+
| pon id | onu id | Flow |
| | | idx |
+--------+--------------+------+
14 bits = 16384 flows (per OLT).
pon id = 4 bits = 16 PON ports
onu id = 7 bits = 128 ONUss per PON port
Flow index = 3 bits = 4 bi-directional flows per ONU
= 8 uni-directional flows per ONU
Logical (OF) UNI port number
OpenFlow port number corresponding to PON UNI
15 11 4 0
+--+--------+--------------+------+
|0 | pon id | onu id | 0 |
+--+--------+--------------+------+
pon id = 4 bits = 16 PON ports
onu id = 7 bits = 128 ONUs per PON port
Logical (OF) NNI port number
OpenFlow port number corresponding to PON UNI
16 0
+--+----------------------------+
|1 | intf_id |
+--+----------------------------+
No overlap with UNI port number space
PON OLT (OF) port number
OpenFlow port number corresponding to PON OLT ports
31 28 0
+--------+------------------------~~~------+
| 0x2 | pon intf id |
+--------+------------------------~~~------+
*/
var MAX_ONUS_PER_PON = 32;
var MIN_UPSTREAM_PORT_ID = 0xfffd;
var MAX_UPSTREAM_PORT_ID = 0xfffffffd;
func MkUniPortNum(intfId uint32, onuId uint32, uniId uint32) uint32 {
/* TODO: Add checks */
return ((intfId << 11) | (onuId << 4) | uniId)
}
func MkFlowId(intfId uint32, onuId uint32, idx uint32) uint32 {
return (((intfId << 9) | (onuId << 4)) | idx)
}
func OnuIdFromPortNum(portNum uint32) uint32 {
return ((portNum >> 4) & 127)
}
func IntfIdFromUniPortNum(portNum uint32) uint32 {
return ((portNum >> 11) & 15)
}
func UniIdFromPortNum(portNum uint32) uint32 {
return ((portNum) & 0xF)
}
func IntfIdFromPonPortNo(portNo uint32) uint32 {
return (portNo & 15)
}
func IntfIdToPortNo(intfId uint32, intfType voltha.Port_PortType) uint32 {
if (( intfType ) == voltha.Port_ETHERNET_NNI) {
return ((1 << 16) | intfId)
} else {
if (( intfType ) == voltha.Port_PON_OLT) {
return ((2 << 28) | intfId)
} else {
return 0
}
}
}
func IntfIdFromNniPortNum(portNum uint32) uint32 {
return (portNum & 0xFFFF)
}
func IntfIdToPortTypeName(intfId uint32) voltha.Port_PortType {
if (( ((2 << 28) ^ intfId) ) < 16) {
return voltha.Port_PON_OLT
} else {
if ( (intfId & (1 << 16)) ) == ( (1 << 16) ) {
return voltha.Port_ETHERNET_NNI
} else {
return voltha.Port_UNKNOWN
}
}
}
func PortTypeNameByPortIndex(portIndex int32) string {
return voltha.Port_PortType_name[portIndex]
}
func ExtractAccessFromFlow(inPort uint32, outPort uint32) (uint32, uint32, uint32, uint32) {
if (IsUpstream(outPort)) {
return inPort, IntfIdFromUniPortNum(inPort), OnuIdFromPortNum(inPort), UniIdFromPortNum(inPort)
} else {
return outPort, IntfIdFromUniPortNum(outPort), OnuIdFromPortNum(outPort), UniIdFromPortNum(outPort)
}
}
func IsUpstream(outPort uint32) bool {
if ((outPort >= uint32(MIN_UPSTREAM_PORT_ID)) && (outPort <= uint32(MAX_UPSTREAM_PORT_ID))) {
return true
}
if ( (outPort & (1 << 16)) ) == ( (1 << 16) ) {
return true
}
return false
}