CSIT-136 IMIX T-REX driver

Change-Id: Ife7c543d07bcac4bad82894eea0f4e0e5a8db4bb
Signed-off-by: Miroslav Miklus <mmiklus@cisco.com>

5 files changed, 263 insertions, 61 deletions

diff --git a/resources/libraries/robot/performance.robot b/resources/libraries/robot/performance.robot
index 2099deef77..f9fbfc7b5b 100644
--- a/resources/libraries/robot/performance.robot
+++ b/resources/libraries/robot/performance.robot
@@ -53,6 +53,8 @@
 | | ... |                             for 10GE with 9004B L2 Frame.
 | | ... | - 10Ge_linerate_pps_9008B - Maximum number of packet per second
 | | ... |                             for 10GE with 9008B L2 Frame.
+| | ... | - 10Ge_linerate_pps_IMIX_v4_1 - Maximum number of packet per second
+| | ... |                                 for 10GE with IMIX_v4_1 profile.
 | | ... | - 40Ge_linerate_pps_64B - Maximum number of packet per second
 | | ... |                           for 40GE with 64B L2 Frame.
 | | ... | - 40Ge_linerate_pps_68B - Maximum number of packet per second
@@ -83,6 +85,7 @@
 | | Set Suite Variable | ${10Ge_linerate_pps_9000B} | 138580
 | | Set Suite Variable | ${10Ge_linerate_pps_9004B} | 138519
 | | Set Suite Variable | ${10Ge_linerate_pps_9008B} | 138458
+| | Set Suite Variable | ${10Ge_linerate_pps_IMIX_v4_1} | 3343736
 | | Set Suite Variable | ${40Ge_linerate_pps_64B} | 59523809
 | | Set Suite Variable | ${40Ge_linerate_pps_68B} | 56818181
 | | Set Suite Variable | ${40Ge_linerate_pps_72B} | 54347826
@@ -93,6 +96,23 @@
 | | Set Suite Variable | ${40Ge_linerate_pps_9004B} | 554078
 | | Set Suite Variable | ${40Ge_linerate_pps_9008B} | 553832
 
+| Get Frame Size
+| | [Documentation]
+| | ... | Framesize can be either integer in case of a single packet
+| | ... | in stream, or set of packets in case of IMIX type or simmilar.
+| | ... | This keyword returns average framesize.
+| | ...
+| | ... | *Arguments:*
+| | ... | - framesize - Framesize. Type: integer or string
+| | ...
+| | ... | *Example:*
+| | ...
+| | ... | \| Get Frame Size \| IMIX_v4_1
+| | [Arguments] | ${framesize}
+| | Run Keyword If | '${framesize}' == 'IMIX_v4_1'
+| | ...            | Return From Keyword | 353.83333
+| | Return From Keyword | ${framesize}
+
 | Setup performance global Variables
 | | [Documentation]
 | | ... | Setup suite Variables. Variables are used across performance testing.
@@ -702,6 +722,7 @@
 | | ... | \| (0, 10/10/10) \|
 | | [Arguments] | ${rate_per_stream} | ${framesize} | ${nr_streams}
 | | ...         | ${latency}
+| | ${framesize}= | Get Frame Size | ${framesize}
 | | ${rate_total}= | Evaluate | ${rate_per_stream}*${nr_streams}
 | | ${bandwidth_total}= | Evaluate | ${rate_total}*(${framesize}+20)*8/(10**9)
 | | Set Test Message | FINAL_RATE: ${rate_total} pps
@@ -736,6 +757,7 @@
 | | ... | \| percentage \| (0, 10/10/10) \|
 | | [Arguments] | ${rate_per_stream} | ${framesize} | ${nr_streams}
 | | ...         | ${loss_acceptance} | ${loss_acceptance_type} | ${latency}
+| | ${framesize}= | Get Frame Size | ${framesize}
 | | ${rate_total}= | Evaluate | ${rate_per_stream}*${nr_streams}
 | | ${bandwidth_total}= | Evaluate | ${rate_total}*(${framesize}+20)*8/(10**9)
 | | Set Test Message | FINAL_RATE: ${rate_total} pps
diff --git a/resources/tools/t-rex/t-rex-stateless.py b/resources/tools/t-rex/t-rex-stateless.py
index 7ff4c3713c..347782b3a3 100755
--- a/resources/tools/t-rex/t-rex-stateless.py
+++ b/resources/tools/t-rex/t-rex-stateless.py
@@ -52,6 +52,10 @@ sys.path.insert(0, "/opt/trex-core-2.03/scripts/automation/"+\
                    "trex_control_plane/stl/")
 from trex_stl_lib.api import *
 
+stream_table = {'IMIX_v4_1': [{'size': 64, 'pps': 28, 'isg':0},
+                              {'size': 570, 'pps': 16, 'isg':0.1},
+                              {'size': 1518, 'pps': 4, 'isg':0.2}]
+               }
 
 def generate_payload(length):
     """Generate payload.
@@ -100,8 +104,75 @@ def get_start_end_ipv6(start_ip, end_ip):
 
     return base_p1, max_p1
 
+def create_streams_v46(base_pkt_a, base_pkt_b, vm1, vm2, frame_size):
+    """Create STLStream streams
+
+    :param base_pkt_a: Base packet a for stream_a
+    :param base_pkt_b: Base packet b for stream_b
+    :param vm1: vm for stream_a
+    :param vm2: vm for stream_b
+    :param frame_size: frame size or name of traffic profile
+    :type base_pkt_a: Eth (scapy)
+    :type base_pkt_b: Eth (scapy)
+    :type vm1: STLScVmRaw
+    :type vm2: STLScVmRaw
+    :frame_size: int or string
+    :return: stream_a, stream_b, stream_a_latency, stream_b_latency
+    :rtype: STLStream, STLStream, STLStream, STLStream
+    """
+
+    if type(frame_size) is int:
+
+        fsize_no_fcs = frame_size - 4 # no FCS
+        pkt_a = STLPktBuilder(pkt=base_pkt_a/generate_payload(
+            max(0, fsize_no_fcs-len(base_pkt_a))), vm=vm1)
+        pkt_b = STLPktBuilder(pkt=base_pkt_b/generate_payload(
+            max(0, fsize_no_fcs-len(base_pkt_b))), vm=vm2)
+        pkt_lat_a = STLPktBuilder(pkt=base_pkt_a/generate_payload(
+            max(0, fsize_no_fcs-len(base_pkt_a))))
+        pkt_lat_b = STLPktBuilder(pkt=base_pkt_b/generate_payload(
+            max(0, fsize_no_fcs-len(base_pkt_b))))
+        lat_stream1 = STLStream(packet=pkt_lat_a,
+                                flow_stats=STLFlowLatencyStats(pg_id=0),
+                                mode=STLTXCont(pps=1000))
+        # second traffic stream with a phase of 10ns (inter stream gap)
+        lat_stream2 = STLStream(packet=pkt_lat_b,
+                                isg=10.0,
+                                flow_stats=STLFlowLatencyStats(pg_id=1),
+                                mode=STLTXCont(pps=1000))
+
+        stream1 = STLStream(packet=pkt_a,
+                            mode=STLTXCont(pps=1000))
+        # second traffic stream with a phase of 10ns (inter stream gap)
+        stream2 = STLStream(packet=pkt_b,
+                            isg=10.0,
+                            mode=STLTXCont(pps=1000))
+    elif type(frame_size) is str:
+        lat_stream1 = []
+        lat_stream2 = []
+        stream1 = []
+        stream2 = []
+
+        for x in stream_table[frame_size]:
+            fsize_no_fcs = x['size'] - 4 # no FCS
+            pkt_a = STLPktBuilder(pkt=base_pkt_a/generate_payload(
+                max(0, fsize_no_fcs-len(base_pkt_a))), vm=vm1)
+            pkt_b = STLPktBuilder(pkt=base_pkt_b/generate_payload(
+                max(0, fsize_no_fcs-len(base_pkt_b))), vm=vm2)
+
+            stream1.append(STLStream(packet=pkt_a,
+                               isg=x['isg'],
+                               mode=STLTXCont(pps=x['pps'])))
+            stream2.append(STLStream(packet=pkt_b,
+                               isg=x['isg'],
+                               mode=STLTXCont(pps=x['pps'])))
 
-def create_packets(traffic_options, frame_size=64):
+    else:
+        raise ValueError("Unknown frame_size type")
+
+    return (stream1, stream2, lat_stream1, lat_stream2)
+
+def create_streams(traffic_options, frame_size=64):
     """Create two IP packets to be used in stream.
 
     :param traffic_options: Parameters for packets.
@@ -112,12 +183,10 @@ def create_packets(traffic_options, frame_size=64):
     :rtype: Tuple of STLPktBuilder
     """
 
-    if frame_size < 64:
-        print_error("Packet min. size is 64B")
+    if type(frame_size) is int and frame_size < 64:
+        print_error("Frame min. size is 64B")
         sys.exit(1)
 
-    fsize_no_fcs = frame_size - 4 # no FCS
-
     p1_src_start_ip = traffic_options['p1_src_start_ip']
     p1_src_end_ip = traffic_options['p1_src_end_ip']
     p1_dst_start_ip = traffic_options['p1_dst_start_ip']
@@ -149,19 +218,10 @@ def create_packets(traffic_options, frame_size=64):
                       STLVmFixIpv4(offset="IP"),
                      ], split_by_field="src")
 
-    pkt_a = STLPktBuilder(pkt=base_pkt_a/generate_payload(
-        max(0, fsize_no_fcs-len(base_pkt_a))), vm=vm1)
-    pkt_b = STLPktBuilder(pkt=base_pkt_b/generate_payload(
-        max(0, fsize_no_fcs-len(base_pkt_b))), vm=vm2)
-    lat_a = STLPktBuilder(pkt=base_pkt_a/generate_payload(
-        max(0, fsize_no_fcs-len(base_pkt_a))))
-    lat_b = STLPktBuilder(pkt=base_pkt_b/generate_payload(
-        max(0, fsize_no_fcs-len(base_pkt_b))))
+    return create_streams_v46(base_pkt_a, base_pkt_b, vm1, vm2, frame_size)
 
-    return(pkt_a, pkt_b, lat_a, lat_b)
 
-
-def create_packets_v6(traffic_options, frame_size=78):
+def create_streams_v6(traffic_options, frame_size=78):
     """Create two IPv6 packets to be used in stream.
 
     :param traffic_options: Parameters for packets.
@@ -172,12 +232,10 @@ def create_packets_v6(traffic_options, frame_size=78):
     :rtype: Tuple of STLPktBuilder
     """
 
-    if frame_size < 78:
-        print "Packet min. size is 78B"
+    if type(frame_size) is int and frame_size < 78:
+        print_error("Frame min. size is 78B")
         sys.exit(2)
 
-    fsize_no_fcs = frame_size - 4 # no FCS
-
     p1_src_start_ip = traffic_options['p1_src_start_ip']
     p1_src_end_ip = traffic_options['p1_src_end_ip']
     p1_dst_start_ip = traffic_options['p1_dst_start_ip']
@@ -213,19 +271,9 @@ def create_packets_v6(traffic_options, frame_size=78):
                      ]
                      , split_by_field="ipv6_src")
 
-    pkt_a = STLPktBuilder(pkt=base_pkt_a/generate_payload(
-        max(0, fsize_no_fcs-len(base_pkt_a))), vm=vm1)
-    pkt_b = STLPktBuilder(pkt=base_pkt_b/generate_payload(
-        max(0, fsize_no_fcs-len(base_pkt_b))), vm=vm2)
-    lat_a = STLPktBuilder(pkt=base_pkt_a/generate_payload(
-        max(0, fsize_no_fcs-len(base_pkt_a))))
-    lat_b = STLPktBuilder(pkt=base_pkt_b/generate_payload(
-        max(0, fsize_no_fcs-len(base_pkt_b))))
-
-    return(pkt_a, pkt_b, lat_a, lat_b)
-
+    return create_streams_v46(base_pkt_a, base_pkt_b, vm1, vm2, frame_size)
 
-def simple_burst(pkt_a, pkt_b, pkt_lat_a, pkt_lat_b, duration, rate,
+def simple_burst(stream_a, stream_b, stream_lat_a, stream_lat_b, duration, rate,
                  warmup_time, async_start, latency):
     """Run the traffic with specific parameters.
 
@@ -270,28 +318,12 @@ def simple_burst(pkt_a, pkt_b, pkt_lat_a, pkt_lat_b, duration, rate,
         # prepare our ports (my machine has 0 <--> 1 with static route)
         client.reset(ports=[0, 1])
 
-        # create two traffic streams without latency stats
-        stream1 = STLStream(packet=pkt_a,
-                            mode=STLTXCont(pps=1000))
-        # second traffic stream with a phase of 10ns (inter stream gap)
-        stream2 = STLStream(packet=pkt_b,
-                            isg=10.0,
-                            mode=STLTXCont(pps=1000))
-        client.add_streams(stream1, ports=[0])
-        client.add_streams(stream2, ports=[1])
+        client.add_streams(stream_a, ports=[0])
+        client.add_streams(stream_b, ports=[1])
 
         if latency:
-            # create two traffic streams with latency stats
-            lat_stream1 = STLStream(packet=pkt_lat_a,
-                                    flow_stats=STLFlowLatencyStats(pg_id=0),
-                                    mode=STLTXCont(pps=1000))
-            # second traffic stream with a phase of 10ns (inter stream gap)
-            lat_stream2 = STLStream(packet=pkt_lat_b,
-                                    isg=10.0,
-                                    flow_stats=STLFlowLatencyStats(pg_id=1),
-                                    mode=STLTXCont(pps=1000))
-            client.add_streams(lat_stream1, ports=[0])
-            client.add_streams(lat_stream2, ports=[1])
+            client.add_streams(stream_lat_a, ports=[0])
+            client.add_streams(stream_lat_b, ports=[1])
 
         #warmup phase
         if warmup_time > 0:
@@ -397,7 +429,7 @@ def parse_args():
     parser = argparse.ArgumentParser()
     parser.add_argument("-d", "--duration", required=True, type=int,
                         help="Duration of traffic run")
-    parser.add_argument("-s", "--frame_size", required=True, type=int,
+    parser.add_argument("-s", "--frame_size", required=True,
                         help="Size of a Frame without padding and IPG")
     parser.add_argument("-r", "--rate", required=True,
                         help="Traffic rate with included units (%, pps)")
@@ -447,11 +479,15 @@ def main():
     args = parse_args()
 
     _duration = args.duration
-    _frame_size = args.frame_size
+    _latency = args.latency
+    if args.frame_size.isdigit():
+        _frame_size = int(args.frame_size)
+    else:
+        _frame_size = args.frame_size
+        _latency = False
     _rate = args.rate
     _use_ipv6 = args.use_IPv6
     _async_call = args.async
-    _latency = args.latency
     _warmup_time = args.warmup_time
 
     _traffic_options = {}
@@ -464,14 +500,14 @@ def main():
         print_error('IPv6 latency is not supported yet. Running without lat.')
         _latency = False
 
-        pkt_a, pkt_b, lat_a, lat_b = create_packets_v6(_traffic_options,
-                                                       frame_size=_frame_size)
+        stream_a, stream_b, stream_lat_a, stream_lat_b = create_streams_v6(
+            _traffic_options, frame_size=_frame_size)
     else:
-        pkt_a, pkt_b, lat_a, lat_b = create_packets(_traffic_options,
-                                                    frame_size=_frame_size)
+        stream_a, stream_b, stream_lat_a, stream_lat_b = create_streams(
+            _traffic_options, frame_size=_frame_size)
 
-    simple_burst(pkt_a, pkt_b, lat_a, lat_b, _duration, _rate, _warmup_time,
-                 _async_call, _latency)
+    simple_burst(stream_a, stream_b, stream_lat_a, stream_lat_b,
+                 _duration, _rate, _warmup_time, _async_call, _latency)
 
 if __name__ == "__main__":
     sys.exit(main())
diff --git a/tests/perf/Long_Bridge_Domain_Intel-X520-DA2.robot b/tests/perf/Long_Bridge_Domain_Intel-X520-DA2.robot
index 9d3843b5b5..549033fbca 100644
--- a/tests/perf/Long_Bridge_Domain_Intel-X520-DA2.robot
+++ b/tests/perf/Long_Bridge_Domain_Intel-X520-DA2.robot
@@ -453,3 +453,50 @@
 | | ...                                       | ${glob_loss_acceptance}
 | | ...                                       | ${glob_loss_acceptance_type}
 
+| TC19: IMIX_v4_1 NDR binary search - DUT L2BD - 1thread 1core 1rxq
+| | [Documentation]
+| | ... | [Cfg] DUT runs L2BD switching config with 1 thread, 1 phy core, \
+| | ... | 1 receive queue per NIC port. [Ver] Find NDR for IMIX_v4_1 frame size
+| | ... | using binary search start at 10GE linerate, step 100kpps.
+| | ... | IMIX_v4_1 = (28x64B;16x570B;4x1518B)
+| | [Tags] | 1_THREAD_NOHTT_RXQUEUES_1 | SINGLE_THREAD | NDR | SKIP_PATCH
+| | ${framesize}= | Set Variable | IMIX_v4_1
+| | ${min_rate}= | Set Variable | 100000
+| | ${max_rate}= | Set Variable | ${10Ge_linerate_pps_IMIX_v4_1}
+| | ${binary_min}= | Set Variable | ${min_rate}
+| | ${binary_max}= | Set Variable | ${max_rate}
+| | ${threshold}= | Set Variable | ${min_rate}
+| | Given Add '1' worker threads and rxqueues '1' without HTT to all DUTs
+| | And   Add all PCI devices to all DUTs
+| | And   Add No Multi Seg to all DUTs
+| | And   Apply startup configuration on all VPP DUTs
+| | And   L2 bridge domain initialized in a 3-node circular topology
+| | Then Find NDR using binary search and pps | ${framesize} | ${binary_min}
+| | ...                                       | ${binary_max} | 3-node-bridge
+| | ...                                       | ${min_rate} | ${max_rate}
+| | ...                                       | ${threshold}
+
+| TC20: IMIX_v4_1 PDR binary search - DUT L2BD - 1thread 1core 1rxq
+| | [Documentation]
+| | ... | [Cfg] DUT runs L2BD switching config with 1 thread, 1 phy core, \
+| | ... | 1 receive queue per NIC port. [Ver] Find PDR for IMIX_v4_1 frame size
+| | ... | using binary search start at 10GE linerate, step 100kpps, LT=0.5%.
+| | ... | IMIX_v4_1 = (28x64B;16x570B;4x1518B)
+| | [Tags] | 1_THREAD_NOHTT_RXQUEUES_1 | SINGLE_THREAD | PDR
+| | ${framesize}= | Set Variable | IMIX_v4_1
+| | ${min_rate}= | Set Variable | 100000
+| | ${max_rate}= | Set Variable | ${10Ge_linerate_pps_IMIX_v4_1}
+| | ${binary_min}= | Set Variable | ${min_rate}
+| | ${binary_max}= | Set Variable | ${max_rate}
+| | ${threshold}= | Set Variable | ${min_rate}
+| | Given Add '1' worker threads and rxqueues '1' without HTT to all DUTs
+| | And   Add all PCI devices to all DUTs
+| | And   Add No Multi Seg to all DUTs
+| | And   Apply startup configuration on all VPP DUTs
+| | And   L2 bridge domain initialized in a 3-node circular topology
+| | Then Find PDR using binary search and pps | ${framesize} | ${binary_min}
+| | ...                                       | ${binary_max} | 3-node-bridge
+| | ...                                       | ${min_rate} | ${max_rate}
+| | ...                                       | ${threshold}
+| | ...                                       | ${glob_loss_acceptance}
+| | ...                                       | ${glob_loss_acceptance_type}
diff --git a/tests/perf/Long_IPv4_Intel-X520-DA2.robot b/tests/perf/Long_IPv4_Intel-X520-DA2.robot
index d287373cbf..3236f93c79 100644
--- a/tests/perf/Long_IPv4_Intel-X520-DA2.robot
+++ b/tests/perf/Long_IPv4_Intel-X520-DA2.robot
@@ -456,3 +456,52 @@
 | | ...                                       | ${threshold}
 | | ...                                       | ${glob_loss_acceptance}
 | | ...                                       | ${glob_loss_acceptance_type}
+
+*** Test Cases ***
+| TC19: IMIX_v4_1 NDR binary search - DUT IPv4 - 1thread 1core 1rxq
+| | [Documentation]
+| | ... | [Cfg] DUT runs IPv4 routing config with 1 thread, 1 phy core, \
+| | ... | 1 receive queue per NIC port. [Ver] Find NDR for IMIX_v4_1 frame size
+| | ... | using binary search start at 10GE linerate, step 100kpps.
+| | ... | IMIX_v4_1 = (28x64B;16x570B;4x1518B)
+| | [Tags] | 1_THREAD_NOHTT_RXQUEUES_1 | SINGLE_THREAD | NDR | SKIP_PATCH
+| | ${framesize}= | Set Variable | IMIX_v4_1
+| | ${min_rate}= | Set Variable | 100000
+| | ${max_rate}= | Set Variable | ${10Ge_linerate_pps_IMIX_v4_1}
+| | ${binary_min}= | Set Variable | ${min_rate}
+| | ${binary_max}= | Set Variable | ${max_rate}
+| | ${threshold}= | Set Variable | ${min_rate}
+| | Given Add '1' worker threads and rxqueues '1' without HTT to all DUTs
+| | And   Add all PCI devices to all DUTs
+| | And   Add No Multi Seg to all DUTs
+| | And   Apply startup configuration on all VPP DUTs
+| | And   IPv4 forwarding initialized in a 3-node circular topology
+| | Then Find NDR using binary search and pps | ${framesize} | ${binary_min}
+| | ...                                       | ${binary_max} | 3-node-IPv4
+| | ...                                       | ${min_rate} | ${max_rate}
+| | ...                                       | ${threshold}
+
+| TC20: 64B PDR binary search - DUT IPv4 - 1thread 1core 1rxq
+| | [Documentation]
+| | ... | [Cfg] DUT runs IPv4 routing config with 1 thread, 1 phy core, \
+| | ... | 1 receive queue per NIC port. [Ver] Find PDR for IMIX_v4_1 frame size
+| | ... | using binary search start at 10GE linerate, step 100kpps, LT=0.5%.
+| | ... | IMIX_v4_1 = (28x64B;16x570B;4x1518B)
+| | [Tags] | 1_THREAD_NOHTT_RXQUEUES_1 | SINGLE_THREAD | PDR
+| | ${framesize}= | Set Variable | IMIX_v4_1
+| | ${min_rate}= | Set Variable | 100000
+| | ${max_rate}= | Set Variable | ${10Ge_linerate_pps_IMIX_v4_1}
+| | ${binary_min}= | Set Variable | ${min_rate}
+| | ${binary_max}= | Set Variable | ${max_rate}
+| | ${threshold}= | Set Variable | ${min_rate}
+| | Given Add '1' worker threads and rxqueues '1' without HTT to all DUTs
+| | And   Add all PCI devices to all DUTs
+| | And   Add No Multi Seg to all DUTs
+| | And   Apply startup configuration on all VPP DUTs
+| | And   IPv4 forwarding initialized in a 3-node circular topology
+| | Then Find PDR using binary search and pps | ${framesize} | ${binary_min}
+| | ...                                       | ${binary_max} | 3-node-IPv4
+| | ...                                       | ${min_rate} | ${max_rate}
+| | ...                                       | ${threshold}
+| | ...                                       | ${glob_loss_acceptance}
+| | ...                                       | ${glob_loss_acceptance_type}
diff --git a/tests/perf/Long_Xconnect_Intel-X520-DA2.robot b/tests/perf/Long_Xconnect_Intel-X520-DA2.robot
index 8c7a3a6f89..110ff4f25c 100644
--- a/tests/perf/Long_Xconnect_Intel-X520-DA2.robot
+++ b/tests/perf/Long_Xconnect_Intel-X520-DA2.robot
@@ -452,3 +452,51 @@
 | | ...                                       | ${threshold}
 | | ...                                       | ${glob_loss_acceptance}
 | | ...                                       | ${glob_loss_acceptance_type}
+
+| TC19: IMIX_v4_1 NDR binary search - DUT L2XC - 1thread 1core 1rxq
+| | [Documentation]
+| | ... | [Cfg] DUT runs L2XC switching config with 1 thread, 1 phy core, \
+| | ... | 1 receive queue per NIC port. [Ver] Find NDR for IMIX_v4_1 frame size
+| | ... | using binary search start at 10GE linerate, step 100kpps.
+| | ... | IMIX_v4_1 = (28x64B;16x570B;4x1518B)
+| | [Tags] | 1_THREAD_NOHTT_RXQUEUES_1 | SINGLE_THREAD | NDR | SKIP_PATCH
+| | ${framesize}= | Set Variable | IMIX_v4_1
+| | ${min_rate}= | Set Variable | 100000
+| | ${max_rate}= | Set Variable | ${10Ge_linerate_pps_IMIX_v4_1}
+| | ${binary_min}= | Set Variable | ${min_rate}
+| | ${binary_max}= | Set Variable | ${max_rate}
+| | ${threshold}= | Set Variable | ${min_rate}
+| | Given Add '1' worker threads and rxqueues '1' without HTT to all DUTs
+| | And   Add all PCI devices to all DUTs
+| | And   Add No Multi Seg to all DUTs
+| | And   Apply startup configuration on all VPP DUTs
+| | And   L2 xconnect initialized in a 3-node circular topology
+| | Then Find NDR using binary search and pps | ${framesize} | ${binary_min}
+| | ...                                       | ${binary_max} | 3-node-xconnect
+| | ...                                       | ${min_rate} | ${max_rate}
+| | ...                                       | ${threshold}
+
+| TC20: IMIX_v4_1 PDR binary search - DUT L2XC - 1thread 1core 1rxq
+| | [Documentation]
+| | ... | [Cfg] DUT runs L2XC switching config with 1 thread, 1 phy core, \
+| | ... | 1 receive queue per NIC port. [Ver] Find PDR for IMIX_v4_1 frame size
+| | ... | using binary search start at 10GE linerate, step 100kpps, LT=0.5%.
+| | ... | IMIX_v4_1 = (28x64B;16x570B;4x1518B)
+| | [Tags] | 1_THREAD_NOHTT_RXQUEUES_1 | SINGLE_THREAD | PDR
+| | ${framesize}= | Set Variable | IMIX_v4_1
+| | ${min_rate}= | Set Variable | 100000
+| | ${max_rate}= | Set Variable | ${10Ge_linerate_pps_IMIX_v4_1}
+| | ${binary_min}= | Set Variable | ${min_rate}
+| | ${binary_max}= | Set Variable | ${max_rate}
+| | ${threshold}= | Set Variable | ${min_rate}
+| | Given Add '1' worker threads and rxqueues '1' without HTT to all DUTs
+| | And   Add all PCI devices to all DUTs
+| | And   Add No Multi Seg to all DUTs
+| | And   Apply startup configuration on all VPP DUTs
+| | And   L2 xconnect initialized in a 3-node circular topology
+| | Then Find PDR using binary search and pps | ${framesize} | ${binary_min}
+| | ...                                       | ${binary_max} | 3-node-xconnect
+| | ...                                       | ${min_rate} | ${max_rate}
+| | ...                                       | ${threshold}
+| | ...                                       | ${glob_loss_acceptance}
+| | ...                                       | ${glob_loss_acceptance_type}