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authorChristian Trautman <ctrautma@redhat.com>2017-10-04 10:34:46 -0400
committerMartin Klozik <martinx.klozik@intel.com>2017-10-20 10:27:31 +0000
commitd126de94bea2e5d0e237dc6a3373fd3d53e3cfa3 (patch)
tree4e0139f8b8f268a63a037ae2f221d1ee7bef1c7c
parent55429d9203032fe7b5dd9ac81cec81cec4e4a17d (diff)
trex_multistream: Add multistream support to T-Rexopnfv-5.1.0opnfv-5.0.RC1opnfv-5.0.0stable/euphrates
Adds incremental source multi-stream functionality to T-Rex traffic generator code in VSPerf. JIRA: VSPERF-532 Change-Id: Ib5ba326699d89350ac1715c9a4276e5fa46a133e Signed-off-by: Christian Trautman <ctrautma@redhat.com> (cherry picked from commit d4054052bdc6d9417e27f81f2434bcf1f2149972)
-rw-r--r--conf/03_traffic.conf2
-rw-r--r--conf/10_custom.conf2
-rw-r--r--docs/testing/user/configguide/trafficgen.rst7
-rw-r--r--tools/pkt_gen/trex/trex.py43
4 files changed, 48 insertions, 6 deletions
diff --git a/conf/03_traffic.conf b/conf/03_traffic.conf
index 419ca70..b553383 100644
--- a/conf/03_traffic.conf
+++ b/conf/03_traffic.conf
@@ -441,7 +441,7 @@ TRAFFICGEN_TREX_LATENCY_PPS = 1000
# Example 10 Gbps: TRAFFICGEN_TREXINE_SPEED_GBPS = '10'
# Today only 10 Gbps is supported
TRAFFICGEN_TREX_LINE_SPEED_GBPS = '10'
-# FOR SR-IOV tests to work with T-Rex enable Promiscuous mode
+# FOR SR-IOV or multistream layer 2 tests to work with T-Rex enable Promiscuous mode
TRAFFICGEN_TREX_PROMISCUOUS=False
PATHS['trafficgen'] = {
'trex': {
diff --git a/conf/10_custom.conf b/conf/10_custom.conf
index 9dc605e..8020bb9 100644
--- a/conf/10_custom.conf
+++ b/conf/10_custom.conf
@@ -136,7 +136,7 @@ TRAFFICGEN_TREX_LATENCY_PPS = 1000
# Example 10 Gbps: TRAFFICGEN_TREXINE_SPEED_GBPS = '10'
# Today only 10 Gbps is supported
TRAFFICGEN_TREX_LINE_SPEED_GBPS = '10'
-# FOR SR-IOV tests to work with T-Rex enable Promiscuous mode
+# FOR SR-IOV or multistream layer 2 tests to work with T-Rex enable Promiscuous mode
TRAFFICGEN_TREX_PROMISCUOUS=False
# TREX Configuration and Connection Info-- END
diff --git a/docs/testing/user/configguide/trafficgen.rst b/docs/testing/user/configguide/trafficgen.rst
index 597f566..4b9eec6 100644
--- a/docs/testing/user/configguide/trafficgen.rst
+++ b/docs/testing/user/configguide/trafficgen.rst
@@ -826,14 +826,17 @@ Default value of this parameter is defined in conf/03_traffic.conf as follows:
TRAFFICGEN_TREX_RFC2544_TPUT_THRESHOLD = ''
-SR-IOV
-~~~~~~
+SR-IOV and Multistream layer 2
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
T-Rex by default only accepts packets on the receive side if the destination mac matches the
MAC address specified in the /etc/trex-cfg.yaml on the server side. For SR-IOV this creates
challenges with modifying the MAC address in the traffic profile to correctly flow packets
through specified VFs. To remove this limitation enable promiscuous mode on T-Rex to allow
all packets regardless of the destination mac to be accepted.
+This also creates problems when doing multistream at layer 2 since the source macs will be
+modified. Enable Promiscuous mode when doing multistream at layer 2 testing with T-Rex.
+
.. code-block:: console
TRAFFICGEN_TREX_PROMISCUOUS=True
diff --git a/tools/pkt_gen/trex/trex.py b/tools/pkt_gen/trex/trex.py
index 7b554ec..abae35d 100644
--- a/tools/pkt_gen/trex/trex.py
+++ b/tools/pkt_gen/trex/trex.py
@@ -21,6 +21,7 @@ import subprocess
import sys
from collections import OrderedDict
# pylint: disable=unused-import
+import netaddr
import zmq
from conf import settings
from conf import merge_spec
@@ -174,8 +175,46 @@ class Trex(ITrafficGenerator):
fsize_no_fcs = frame_size - 4
payload_a = max(0, fsize_no_fcs - len(base_pkt_a)) * 'x'
payload_b = max(0, fsize_no_fcs - len(base_pkt_b)) * 'x'
- pkt_a = STLPktBuilder(pkt=base_pkt_a/payload_a)
- pkt_b = STLPktBuilder(pkt=base_pkt_b/payload_b)
+
+ # Multistream configuration, increments source values only
+ ms_mod = list() # mod list for incrementing values to be populated based on layer
+ if traffic['multistream'] > 1:
+ if traffic['stream_type'].upper() == 'L2':
+ for _ in [base_pkt_a, base_pkt_b]:
+ ms_mod += [STLVmFlowVar(name="mac_start", min_value=0,
+ max_value=traffic['multistream'] - 1, size=4, op="inc"),
+ STLVmWrFlowVar(fv_name="mac_start", pkt_offset=7)]
+ elif traffic['stream_type'].upper() == 'L3':
+ ip_src = {"start": int(netaddr.IPAddress(traffic['l3']['srcip'])),
+ "end": int(netaddr.IPAddress(traffic['l3']['srcip'])) + traffic['multistream'] - 1}
+ ip_dst = {"start": int(netaddr.IPAddress(traffic['l3']['dstip'])),
+ "end": int(netaddr.IPAddress(traffic['l3']['dstip'])) + traffic['multistream'] - 1}
+ for ip_address in [ip_src, ip_dst]:
+ ms_mod += [STLVmFlowVar(name="ip_src", min_value=ip_address['start'],
+ max_value=ip_address['end'], size=4, op="inc"),
+ STLVmWrFlowVar(fv_name="ip_src", pkt_offset="IP.src")]
+ elif traffic['stream_type'].upper() == 'L4':
+ for udpport in [traffic['l4']['srcport'], traffic['l4']['dstport']]:
+ if udpport + (traffic['multistream'] - 1) > 65535:
+ start_port = udpport
+ # find the max/min port number based on the loop around of 65535 to 0 if needed
+ minimum_value = 65535 - (traffic['multistream'] -1)
+ maximum_value = 65535
+ else:
+ start_port, minimum_value = udpport, udpport
+ maximum_value = start_port + (traffic['multistream'] - 1)
+ ms_mod += [STLVmFlowVar(name="port_src", init_value=start_port,
+ min_value=minimum_value, max_value=maximum_value,
+ size=2, op="inc"),
+ STLVmWrFlowVar(fv_name="port_src", pkt_offset="UDP.sport"),]
+
+ if ms_mod: # multistream detected
+ pkt_a = STLPktBuilder(pkt=base_pkt_a/payload_a, vm=[ms_mod[0], ms_mod[1]])
+ pkt_b = STLPktBuilder(pkt=base_pkt_b/payload_b, vm=[ms_mod[2], ms_mod[3]])
+ else:
+ pkt_a = STLPktBuilder(pkt=base_pkt_a / payload_a)
+ pkt_b = STLPktBuilder(pkt=base_pkt_b / payload_b)
+
stream_1 = STLStream(packet=pkt_a,
name='stream_1',
mode=STLTXCont(percentage=traffic['frame_rate']))