licenses: Dedicated directory for non Apache files

All files, which do not comply to Apache 2.0 license,
are moved into dedicated 3rd_party directory. This will
simplify license checks performed on vsperf code.
It is not required to move l2fwd module from its
current location.

JIRA: VSPERF-413

Change-Id: I6b4bd6bb5542e6db9a7ef91ee3f5f2907f93e9b8
Signed-off-by: Martin Klozik <martinx.klozik@intel.com>
Reviewed-by: Maryam Tahhan <maryam.tahhan@intel.com>
Reviewed-by: Al Morton <acmorton@att.com>
Reviewed-by: Christian Trautman <ctrautma@redhat.com>
Reviewed-by: Bill Michalowski <bmichalo@redhat.com>

1 files changed, 760 insertions, 0 deletions

diff --git a/3rd_party/ixia/pass_fail.tcl b/3rd_party/ixia/pass_fail.tcl
new file mode 100755
index 00000000..79b7f10d
--- /dev/null
+++ b/3rd_party/ixia/pass_fail.tcl
@@ -0,0 +1,760 @@
+#!/usr/bin/env tclsh
+
+# Copyright (c) 2014, Ixia
+# Copyright (c) 2015-2016, Intel Corporation
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+#
+# 3. Neither the name of the copyright holder nor the names of its
+# contributors may be used to endorse or promote products derived
+# from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+
+# This file is a modified version of a script generated by Ixia
+# IxExplorer.
+
+lappend auto_path [list $lib_path]
+
+package req IxTclHal
+
+###################################################################
+########################## Configuration ##########################
+###################################################################
+
+# Verify that the IXIA chassis spec is given
+
+set reqVars [list "host" "card" "port1" "port2"]
+
+foreach var $reqVars {
+    set var_ns [namespace which -variable "$var"]
+    if { [string compare $var_ns ""] == 0 } {
+        errorMsg "The '$var' variable is undefined. Did you set it?"
+        return -1
+    }
+}
+
+# constants
+
+set fullHex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
+set hexToC5                             "000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F202122232425262728292A2B2C2D2E2F303132333435363738393A3B3C3D3E3F404142434445464748494A4B4C4D4E4F505152535455565758595A5B5C5D5E5F606162636465666768696A6B6C6D6E6F707172737475767778797A7B7C7D7E7F808182838485868788898A8B8C8D8E8F909192939495969798999A9B9C9D9E9FA0A1A2A3A4A5A6A7A8A9AAABACADAEAFB0B1B2B3B4B5B6B7B8B9BABBBCBDBEBFC0C1C2C3C4C5"
+
+#set payloadLookup(64)                   [string range $fullHex 0 11]
+set payloadLookup(64)                   "000102030405"
+set payloadLookup(128)                  "000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F202122232425262728292A2B2C2D2E2F303132333435363738393A3B3C3D3E3F404142434445"
+set payloadLookup(256)                  "$hexToC5"
+set payloadLookup(512)                  "$fullHex$hexToC5"
+set payloadLookup(1024)                 "$fullHex$fullHex$fullHex$hexToC5"
+
+###################################################################
+###################### Chassis Configuration ######################
+###################################################################
+
+if {[isUNIX]} {
+    if {[ixConnectToTclServer $host]} {
+        errorMsg "Error connecting to Tcl Server $host"
+        return $::TCL_ERROR
+    }
+}
+
+######### Chassis #########
+
+# Now connect to the chassis
+if [ixConnectToChassis $host] {
+    ixPuts $::ixErrorInfo
+    return 1
+}
+
+# Get the chassis ID to use in port lists
+set chassis [ixGetChassisID $host]
+
+#########  Ports #########
+
+set portList [list [list $chassis $card $port1] \
+                   [list $chassis $card $port2]]
+
+# Clear ownership of the ports we’ll use
+if [ixClearOwnership $portList force] {
+    ixPuts $::ixErrorInfo
+    return 1
+}
+
+# Take ownership of the ports we’ll use
+if [ixTakeOwnership $portList] {
+    ixPuts $::ixErrorInfo
+    return 1
+}
+
+foreach portElem $portList {
+    set chasNum [lindex $portElem 0]
+    set cardNum [lindex $portElem 1]
+    set portNum [lindex $portElem 2]
+
+    port setFactoryDefaults $chasNum $cardNum $portNum
+    port config -speed                                10000
+    port config -flowControl                          true
+    port config -transmitMode                         portTxModeAdvancedScheduler
+    port config -receiveMode                          [expr $::portCapture|$::portRxModeWidePacketGroup]
+    port config -advertise100FullDuplex               false
+    port config -advertise100HalfDuplex               false
+    port config -advertise10FullDuplex                false
+    port config -advertise10HalfDuplex                false
+    port config -portMode                             port10GigLanMode
+    port config -enableTxRxSyncStatsMode              true
+    port config -txRxSyncInterval                     2000
+    port config -enableTransparentDynamicRateChange   true
+    port config -enableDynamicMPLSMode                true
+    if {[port set $chasNum $cardNum $portNum]} {
+        errorMsg "Error calling port set $chasNum $cardNum $portNum"
+    }
+
+    packetGroup setDefault
+    packetGroup config -numTimeBins                   1
+    if {[packetGroup setRx $chasNum $cardNum $portNum]} {
+        errorMsg "Error calling packetGroup setRx $chasNum $cardNum $portNum"
+    }
+
+    sfpPlus setDefault
+    sfpPlus config -enableAutomaticDetect             false
+    sfpPlus config -txPreTapControlValue              1
+    sfpPlus config -txMainTapControlValue             63
+    sfpPlus config -txPostTapControlValue             2
+    sfpPlus config -rxEqualizerControlValue           0
+    if {[sfpPlus set $chasNum $cardNum $portNum]} {
+        errorMsg "Error calling sfpPlus set $chasNum $cardNum $portNum"
+    }
+
+    filter setDefault
+    filter config -captureTriggerFrameSizeFrom        48
+    filter config -captureTriggerFrameSizeTo          48
+    filter config -captureFilterFrameSizeFrom         48
+    filter config -captureFilterFrameSizeTo           48
+    filter config -userDefinedStat1FrameSizeFrom      48
+    filter config -userDefinedStat1FrameSizeTo        48
+    filter config -userDefinedStat2FrameSizeFrom      48
+    filter config -userDefinedStat2FrameSizeTo        48
+    filter config -asyncTrigger1FrameSizeFrom         48
+    filter config -asyncTrigger1FrameSizeTo           48
+    filter config -asyncTrigger2FrameSizeFrom         48
+    filter config -asyncTrigger2FrameSizeTo           48
+    filter config -userDefinedStat1Enable             true
+    filter config -userDefinedStat2Enable             true
+    filter config -asyncTrigger1Enable                true
+    filter config -asyncTrigger2Enable                true
+    if {[filter set $chasNum $cardNum $portNum]} {
+        errorMsg "Error calling filter set $chasNum $cardNum $portNum"
+    }
+
+    filterPallette setDefault
+    filterPallette config -pattern1                   00
+    filterPallette config -patternMask1               00
+    filterPallette config -patternOffset1             20
+    filterPallette config -patternOffset2             20
+    if {[filterPallette set $chasNum $cardNum $portNum]} {
+        errorMsg "Error calling filterPallette set $chasNum $cardNum $portNum"
+    }
+
+    capture setDefault
+    capture config -sliceSize                         65536
+    if {[capture set $chasNum $cardNum $portNum]} {
+        errorMsg "Error calling capture set $chasNum $cardNum $portNum"
+    }
+
+    if {[interfaceTable select $chasNum $cardNum $portNum]} {
+        errorMsg "Error calling interfaceTable select $chasNum $cardNum $portNum"
+    }
+
+    interfaceTable setDefault
+    if {[interfaceTable set]} {
+        errorMsg "Error calling interfaceTable set"
+    }
+
+    interfaceTable clearAllInterfaces
+    if {[interfaceTable write]} {
+        errorMsg "Error calling interfaceTable write"
+    }
+
+    ixEnablePortIntrinsicLatencyAdjustment $chasNum $cardNum $portNum true
+}
+
+ixWritePortsToHardware portList
+
+if {[ixCheckLinkState $portList] != 0} {
+    errorMsg "One or more port links are down"
+}
+
+proc sendTraffic { flowSpec trafficSpec } {
+    # Send traffic from IXIA.
+    #
+    # Transmits traffic from Rx port (port1), and captures traffic at
+    # Tx port (port2).
+    #
+    # Parameters:
+    #   flowSpec - a dict detailing how the packet should be sent. Should be
+    #     of format:
+    #         {type, numpkts, duration, framerate}
+    #   trafficSpec - a dict describing the packet to be sent. Should be
+    #     of format:
+    #         { l2, vlan, l3}
+    #     where each item is in turn a dict detailing the configuration of each
+    #     layer of the packet
+    # Returns:
+    #   Output from Rx end of Ixia if duration != 0, else 0
+
+    ##################################################
+    ################# Initialisation #################
+    ##################################################
+
+    # Configure global variables. See documentation on 'global' for more
+    # information on why this is necessary
+    #   https://www.tcl.tk/man/tcl8.5/tutorial/Tcl13.html
+    global portList
+
+    # Extract the provided dictionaries to local variables to simplify the
+    # rest of the script
+
+    # flow spec
+
+    set streamType              [dict get $flowSpec type]
+    set numPkts                 [dict get $flowSpec numpkts]
+    set duration                [expr {[dict get $flowSpec duration] * 1000}]
+    set frameRate               [dict get $flowSpec framerate]
+
+    # traffic spec
+
+    # extract nested dictionaries
+    set trafficSpec_l2          [dict get $trafficSpec l2]
+    set trafficSpec_l3          [dict get $trafficSpec l3]
+    set trafficSpec_l4          [dict get $trafficSpec l4]
+    set trafficSpec_vlan        [dict get $trafficSpec vlan]
+
+    set frameSize               [dict get $trafficSpec_l2 framesize]
+    set srcMac                  [dict get $trafficSpec_l2 srcmac]
+    set dstMac                  [dict get $trafficSpec_l2 dstmac]
+    set srcPort                 [dict get $trafficSpec_l4 srcport]
+    set dstPort                 [dict get $trafficSpec_l4 dstport]
+
+    set proto                   [dict get $trafficSpec_l3 proto]
+    set srcIp                   [dict get $trafficSpec_l3 srcip]
+    set dstIp                   [dict get $trafficSpec_l3 dstip]
+
+    if {[dict exists $trafficSpec_l3 protocolpadbytes]} {
+        set protocolPad             [dict get $trafficSpec_l4 protocolpad]
+        set protocolPadBytes        [dict get $trafficSpec_l4 protocolpadbytes]
+    }
+
+    set vlanEnabled             [dict get $trafficSpec_vlan enabled]
+    if {$vlanEnabled == 1 } {
+        # these keys won't exist if vlan wasn't enabled
+        set vlanId                  [dict get $trafficSpec_vlan id]
+        set vlanUserPrio            [dict get $trafficSpec_vlan priority]
+        set vlanCfi                 [dict get $trafficSpec_vlan cfi]
+    }
+
+    ##################################################
+    ##################### Streams ####################
+    ##################################################
+
+    streamRegion get $::chassis $::card $::port1
+    if {[streamRegion enableGenerateWarningList $::chassis $::card $::port1 false]} {
+        errorMsg "Error calling streamRegion enableGenerateWarningList  $::chassis $::card $::port1 false"
+    }
+
+    set streamId 1
+
+    stream setDefault
+    stream config -ifg                                9.6
+    stream config -ifgMIN                             19.2
+    stream config -ifgMAX                             25.6
+    stream config -ibg                                9.6
+    stream config -isg                                9.6
+    stream config -rateMode                           streamRateModePercentRate
+    stream config -percentPacketRate                  $frameRate
+    stream config -framesize                          $frameSize
+    stream config -frameType                          "08 00"
+    stream config -sa                                 $srcMac
+    stream config -da                                 $dstMac
+    stream config -numSA                              16
+    stream config -numDA                              16
+    stream config -asyncIntEnable                     true
+    stream config -dma                                $streamType
+    stream config -numBursts                          1
+    stream config -numFrames                          $numPkts
+    stream config -patternType                        incrByte
+    stream config -dataPattern                        x00010203
+    stream config -pattern                            "00 01 02 03"
+
+    protocol setDefault
+    protocol config -name                             ipV4
+    protocol config -ethernetType                     ethernetII
+    if {$vlanEnabled == 1} {
+        protocol config -enable802dot1qTag            vlanSingle
+    }
+
+    if {[info exists protocolPad]} {
+        protocol config -enableProtocolPad                $protocolPad
+    }
+
+    ip setDefault
+    ip config -ipProtocol                             ipV4Protocol[string totitle $proto]
+    ip config -checksum                               "f6 75"
+    ip config -sourceIpAddr                           $srcIp
+    ip config -sourceIpAddrRepeatCount                10
+    ip config -sourceClass                            classA
+    ip config -destIpAddr                             $dstIp
+    ip config -destIpAddrRepeatCount                  10
+    ip config -destClass                              classA
+    ip config -destMacAddr                            $dstMac
+    ip config -destDutIpAddr                          0.0.0.0
+    ip config -ttl                                    64
+    if {[ip set $::chassis $::card $::port1]} {
+        errorMsg "Error calling ip set $::chassis $::card $::port1"
+    }
+
+    "$proto" setDefault
+    "$proto" config -checksum                         "25 81"
+    if {["$proto" set $::chassis $::card $::port1]} {
+        errorMsg "Error calling $proto set $::chassis $::card $::port"
+    }
+
+    if {[info exists protocolPad]} {
+        protocolPad setDefault
+        # VxLAN header with VNI 99 (0x63)
+        # Inner SRC 01:02:03:04:05:06
+        # Inner DST 06:05:04:03:02:01
+        # IP SRC 192.168.0.2
+        # IP DST 192.168.240.9
+        # SRC port 3000 (0x0BB8)
+        # DST port 3001 (0x0BB9)
+        # length 26
+        # UDP Checksum 0x2E93
+
+        # From encap case capture
+        protocolPad config -dataBytes "$protocolPadBytes"
+        if {[protocolPad set $::chassis $::card $::port1]} {
+            errorMsg "Error calling protocolPad set $::chassis $::card $::port"
+            set retCode $::TCL_ERROR
+        }
+    }
+
+    if {$vlanEnabled == 1 } {
+        vlan setDefault
+        vlan config -vlanID                               $vlanId
+        vlan config -userPriority                         $vlanUserPrio
+        vlan config -cfi                                  $vlanCfi
+        vlan config -mode                                 vIdle
+        vlan config -repeat                               10
+        vlan config -step                                 1
+        vlan config -maskval                              "0000XXXXXXXXXXXX"
+        vlan config -protocolTagId                        vlanProtocolTag8100
+    }
+
+    if {[vlan set $::chassis $::card $::port1]} {
+        errorMsg "Error calling vlan set $::chassis $::card $::port1"
+    }
+
+    if {[port isValidFeature $::chassis $::card $::port1 $::portFeatureTableUdf]} {
+        tableUdf setDefault
+        tableUdf clearColumns
+        if {[tableUdf set $::chassis $::card $::port1]} {
+            errorMsg "Error calling tableUdf set $::chassis $::card $::port1"
+        }
+    }
+
+    if {[port isValidFeature $::chassis $::card $::port1 $::portFeatureRandomFrameSizeWeightedPair]} {
+        weightedRandomFramesize setDefault
+        if {[weightedRandomFramesize set $::chassis $::card $::port1]} {
+            errorMsg "Error calling weightedRandomFramesize set $::chassis $::card $::port1"
+        }
+    }
+
+    if {$proto == "tcp"} {
+        tcp setDefault
+        tcp config -sourcePort                            $srcPort
+        tcp config -destPort                              $dstPort
+        if {[tcp set $::chassis $::card $::port1 ]} {
+            errorMsg "Error setting tcp on port $::chassis.$::card.$::port1"
+        }
+
+        if {$vlanEnabled != 1} {
+            udf setDefault
+            udf config -repeat                                1
+            udf config -continuousCount                       true
+            udf config -initval                               {00 00 00 01}
+            udf config -updown                                uuuu
+            udf config -cascadeType                           udfCascadeNone
+            udf config -step                                  1
+
+            packetGroup setDefault
+            packetGroup config -insertSequenceSignature       true
+            packetGroup config -sequenceNumberOffset          38
+            packetGroup config -signatureOffset               42
+            packetGroup config -signature                     "08 71 18 05"
+            packetGroup config -groupIdOffset                 52
+            packetGroup config -groupId                       $streamId
+            packetGroup config -allocateUdf                   true
+            if {[packetGroup setTx $::chassis $::card $::port1 $streamId]} {
+                errorMsg "Error calling packetGroup setTx $::chassis $::card $::port1 $streamId"
+            }
+        }
+    } elseif {$proto == "udp"} {
+        udp setDefault
+        udp config -sourcePort                            $srcPort
+        udp config -destPort                              $dstPort
+        set packetSize               [dict get $trafficSpec_l3 packetsize]
+        stream config -framesize                          $packetSize
+        if {[udp set $::chassis $::card $::port1]} {
+            errorMsg "Error setting udp on port $::chassis.$::card.$::port1"
+        }
+        errorMsg "frameSize: $frameSize, packetSize: $packetSize, srcMac: $srcMac, dstMac: $dstMac, srcPort: $srcPort, dstPort: $dstPort"
+        if {[info exists protocolPad]} {
+            errorMsg "protocolPad: $protocolPad, protocolPadBytes: $protocolPadBytes"
+        }
+    }
+
+    if {[stream set $::chassis $::card $::port1 $streamId]} {
+        errorMsg "Error calling stream set $::chassis $::card $::port1 $streamId"
+    }
+
+    incr streamId
+    streamRegion generateWarningList $::chassis $::card $::port1
+    ixWriteConfigToHardware portList -noProtocolServer
+
+    if {[packetGroup getRx $::chassis $::card $::port2]} {
+        errorMsg "Error calling packetGroup getRx $::chassis $::card $::port2"
+    }
+
+    ##################################################
+    ######### Traffic Transmit and Results ###########
+    ##################################################
+
+    # Transmit traffic
+
+    logMsg "Clearing stats for all ports"
+    ixClearStats portList
+
+    logMsg "Starting packet groups on port $::port2"
+    ixStartPortPacketGroups $::chassis $::card $::port2
+
+    logMsg "Starting Capture on port $::port2"
+    ixStartPortCapture $::chassis $::card $::port2
+
+    logMsg "Starting transmit on port $::port1"
+    ixStartPortTransmit $::chassis $::card $::port1
+
+    # If duration=0 is passed, exit after starting transmit
+
+    if {$duration == 0} {
+        logMsg "Sending traffic until interrupted"
+        return
+    }
+
+    logMsg "Waiting for $duration ms"
+
+    # Wait for duration - 1 second to get traffic rate
+
+    after [expr "$duration - 1"]
+
+    # Get result
+
+    set result                                        [stopTraffic]
+
+    if {$streamType == "contPacket"} {
+        return $result
+    } elseif {$streamType == "stopStream"} {
+        set payError 0
+        set seqError 0
+        set captureLimit 3000
+
+        # explode results from 'stopTraffic' for ease of use later
+        set framesSent [lindex $result 0]
+        set framesRecv [lindex $result 1]
+        set bytesSent [lindex $result 2]
+        set bytesRecv [lindex $result 3]
+
+        if {$framesSent <= $captureLimit} {
+            captureBuffer get $::chassis $::card $::port2 1 $framesSent
+            set capturedFrames [captureBuffer cget -numFrames]
+
+            set notCaptured [expr "$framesRecv - $capturedFrames"]
+            if {$notCaptured != 0} {
+                errorMsg "'$notCaptured' frames were not captured"
+            }
+
+            if {$proto == "tcp"} {
+                for {set z 1} {$z <= $capturedFrames} {incr z} {
+                    captureBuffer getframe $z
+                    set capFrame [captureBuffer cget -frame]
+                    regsub -all " " $capFrame "" frameNoSpaces
+                    set frameNoSpaces
+
+                    set startPayload 108
+                    set endPayload [expr "[expr "$frameSize * 2"] - 9"]
+                    set payload [string range $frameNoSpaces $startPayload $endPayload]
+
+                    if {$vlanEnabled != 1} {
+                        set startSequence 76
+                        set endSequence 83
+                        set sequence [string range $frameNoSpaces $startSequence $endSequence]
+                        scan $sequence %x seqDecimal
+                        set seqDecimal
+                        if {"$payload" != $::payloadLookup($frameSize)} {
+                            errorMsg "frame '$z' payload: invalid payload"
+                            incr payError
+                        }
+                        # variable z increments from 1 to total number of packets
+                        # captured TCP sequence numbers start at 0, not 1. When
+                        # comparing sequence numbers for captured frames, reduce
+                        # variable z by 1 i.e. frame 1 with sequence 0 is compared
+                        # to expected sequence 0.
+                        if {$seqDecimal != $z-1} {
+                            errorMsg "frame '$z' sequence number: Found '$seqDecimal'. Expected '$z'"
+                            incr seqError
+                        }
+                    }
+                }
+            }
+            logMsg "Sequence Errors: $seqError"
+            logMsg "Payload Errors:  $payError\n"
+        } else {
+            errorMsg "Too many packets for capture."
+        }
+
+        set result [list $framesSent $framesRecv $bytesSent $bytesRecv $payError $seqError]
+        return $result
+    } else {
+        errorMsg "streamtype is not supported: '$streamType'"
+    }
+}
+
+proc stopTraffic {} {
+    # Stop sending traffic from IXIA.
+    #
+    # Stops Transmit of traffic from Rx port.
+    #
+    # Returns:
+    #   Output from Rx end of Ixia.
+
+    ##################################################
+    ################# Initialisation #################
+    ##################################################
+
+    # Configure global variables. See documentation on 'global' for more
+    # information on why this is necessary
+    #   https://www.tcl.tk/man/tcl8.5/tutorial/Tcl13.html
+    global portList
+
+    ##################################################
+    ####### Stop Traffic Transmit and Results ########
+    ##################################################
+
+     # Read frame rate of transmission
+
+    if {[stat getRate statAllStats $::chassis $::card $::port1]} {
+        errorMsg "Error reading stat rate on port $::chassis $::card $::port1"
+        return $::TCL_ERROR
+    }
+
+    set sendRate [stat cget -framesSent]
+    set sendRateBytes [stat cget -bytesSent]
+
+    if {[stat getRate statAllStats $::chassis $::card $::port2]} {
+        errorMsg "Error reading stat rate on port $::chassis $::card $::port2"
+        return $::TCL_ERROR
+    }
+
+    set recvRate [stat cget -framesReceived]
+    set recvRateBytes [stat cget -bytesReceived]
+
+    # Wait for a second, else we get funny framerate statistics
+    after 1
+
+    # Stop transmission of traffic
+    ixStopTransmit portList
+
+    if {[ixCheckTransmitDone portList] == $::TCL_ERROR} {
+        return -code error
+    } else {
+        logMsg "Transmission is complete.\n"
+    }
+
+    ixStopPacketGroups portList
+    ixStopCapture portList
+
+    # Get statistics
+
+    if {[stat get statAllStats $::chassis $::card $::port1]} {
+        errorMsg "Error reading stat on port $::chassis $::card $::port1"
+        return $::TCL_ERROR
+    }
+
+    set bytesSent [stat cget -bytesSent]
+    set framesSent [stat cget -framesSent]
+
+    if {[stat get statAllStats $::chassis $::card $::port2]} {
+        errorMsg "Error reading stat on port $::chassis $::card $::port2"
+        return $::TCL_ERROR
+    }
+
+    set bytesRecv [stat cget -bytesReceived]
+    set framesRecv [stat cget -framesReceived]
+
+    set bytesDropped [expr "$bytesSent - $bytesRecv"]
+    set framesDropped [expr "$framesSent - $framesRecv"]
+
+    logMsg "Frames Sent:       $framesSent"
+    logMsg "Frames Recv:       $framesRecv"
+    logMsg "Frames Dropped:    $framesDropped\n"
+
+    logMsg "Bytes Sent:        $bytesSent"
+    logMsg "Bytes Recv:        $bytesRecv"
+    logMsg "Bytes Dropped:     $bytesDropped\n"
+
+    logMsg "Frame Rate Sent:   $sendRate"
+    logMsg "Frame Rate Recv:   $recvRate\n"
+
+    set result [list $framesSent $framesRecv $bytesSent $bytesRecv $sendRate $recvRate $sendRateBytes $recvRateBytes]
+
+    return $result
+}
+
+proc rfcThroughputTest { testSpec trafficSpec } {
+    # Execute RFC tests from IXIA.
+    #
+    # Wraps the sendTraffic proc, repeatedly calling it, storing the result and
+    # performing an iterative binary search to find the highest possible RFC
+    # transmission rate. Abides by the specification of RFC2544 as given by the
+    # IETF:
+    #
+    #   https://www.ietf.org/rfc/rfc2544.txt
+    #
+    # Parameters:
+    #   testSpec - a dict detailing how the test should be run. Should be
+    #     of format:
+    #         {numtrials, duration, lossrate}
+    #   trafficSpec - a dict describing the packet to be sent. Should be
+    #     of format:
+    #         { l2, l3}
+    #     where each item is in turn a dict detailing the configuration of each
+    #     layer of the packet
+    # Returns:
+    #   Highest rate with acceptable packet loss.
+
+    ##################################################
+    ################# Initialisation #################
+    ##################################################
+
+    # Configure global variables. See documentation on 'global' for more
+    # information on why this is necessary
+    #   https://www.tcl.tk/man/tcl8.5/tutorial/Tcl13.html
+    global portList
+
+    # Extract the provided dictionaries to local variables to simplify the
+    # rest of the script
+
+    # testSpec
+
+    # RFC2544 to IXIA terminology mapping (it affects Ixia configuration below):
+    # Test    => Trial
+    # Trial   => Iteration
+    set numTrials               [dict get $testSpec tests]  ;# we don't use this yet
+    set duration                [dict get $testSpec duration]
+    set lossRate                [dict get $testSpec lossrate]
+    set multipleStream          [dict get $testSpec multipleStreams]  ;# we don't use this yet
+
+    # variables used for binary search of results
+    set min 1
+    set max 100
+    set diff [expr "$max - $min"]
+
+    set result [list 0 0 0 0 0 0 0 0]  ;# best result found so far
+    set percentRate 100  ;# starting throughput percentage rate
+
+    ##################################################
+    ######### Traffic Transmit and Results ###########
+    ##################################################
+
+    # iterate a maximum of 20 times, sending packets at a set  rate to
+    # find fastest possible rate with acceptable packetloss
+    #
+    # As a reminder, the binary search works something like this:
+    #
+    #   percentRate < idealValue --> min = percentRate
+    #   percentRate > idealValue --> max = percentRate
+    #   percentRate = idealValue --> max = min = percentRate
+    #
+    for {set i 0} {$i < 20} {incr i} {
+        dict set flowSpec type                        "contPacket"
+        dict set flowSpec numpkts                     100 ;# this can be bypassed
+        dict set flowSpec duration                    $duration
+        dict set flowSpec framerate                   $percentRate
+
+        set flowStats [sendTraffic $flowSpec $trafficSpec]
+
+        # explode results from 'sendTraffic' for ease of use later
+        set framesSent [lindex $flowStats 0]
+        set framesRecv [lindex $flowStats 1]
+        set sendRate [lindex $flowStats 4]
+
+        set framesDropped [expr "$framesSent - $framesRecv"]
+        if {$framesSent > 0} {
+            set framesDroppedRate [expr "double($framesDropped) / $framesSent"]
+        } else {
+            set framesDroppedRate 100
+        }
+
+        # check if we've already found the rate before 10 iterations, i.e.
+        # 'percentRate = idealValue'. This is as accurate as we can get with
+        # integer values.
+        if {[expr "$max - $min"] <= 0.5 } {
+            break
+        }
+
+        # handle 'percentRate <= idealValue' case
+        if {$framesDroppedRate <= $lossRate} {
+            logMsg "Frame sendRate of '$sendRate' pps succeeded ('$framesDropped' frames dropped)"
+
+            set result $flowStats
+            set min $percentRate
+
+            set percentRate [expr "$percentRate + ([expr "$max - $min"] * 0.5)"]
+        # handle the 'percentRate > idealValue' case
+        } else {
+            if {$framesDropped == $framesSent} {
+                errorMsg "Dropped all frames!"
+            }
+
+            errorMsg "Frame sendRate of '$sendRate' pps failed ('$framesDropped' frames dropped)"
+
+            set max $percentRate
+            set percentRate [expr "$percentRate - ([expr "$max - $min"] * 0.5)"]
+        }
+    }
+
+    set bestRate [lindex $result 4]
+
+    logMsg "$lossRate% packet loss rate: $bestRate"
+
+    return $result
+}