pkt_gen: STC - Imix Genome Support

This patch adds Imix-Genome support to STC.
1. Imix, of type genome, is included in traffic configuration.
2. The genome is converted to appropriated weights and pkt-sizes.
3. Throughput test is run with imix-configuration.
4. genome configuration is added to results.
5. Added Reporting of Average-Frame-Size - if IMIX is configured.
6. Updated genome comments
7. Clarified the reference to RFC 6985.

JIRA: VSPERF-521

Change-Id: I813efb66338ee1d1320a01ce5e0834180461120c
Signed-off-by: Sridhar K. N. Rao <sridhar.rao@spirent.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/conf/03_traffic.conf b/conf/03_traffic.conf
index 486ab2c8..d3269078 100644
--- a/conf/03_traffic.conf
+++ b/conf/03_traffic.conf
@@ -209,6 +209,20 @@ LOG_FILE_TRAFFIC_GEN = 'traffic-gen.log'
 #        'enabled'   - Specifies if the histogram provisioning is enabled or not.
 #        'type'      - Defines how histogram is provided. Currenty only 'Default' is defined.
 #                         'Default' - Default histogram as provided by the Traffic-generator.
+#    'imix'          - A dictionary for IMIX Specification.
+#        'enabled'   - Specifies if IMIX is enabled or NOT.
+#        'type'      - The specification type - denotes how IMIX is specified.
+#                      Currently only 'genome' type is defined.
+#                      Other types (ex: table-of-proportions) can be added in future.
+#        'genome'    - The Genome Encoding of Pkt-Sizes and Ratio for IMIX.
+#                      The ratio is inferred from the number of particular geneome characters.
+#                      Genome encoding is described in RFC 6985. This specification is closest
+#                      to the method described in section 6.2 of RFC 6985.
+#                      Ex: 'aaaaaaaddddg' denotes ratio of 7:4:1 of packets sizes 64:512:1518.
+#                      Note: Exact-sequence is not maintained, only the ratio of packets
+#                      is ensured.
+#                      Data type: str
+#                      Default Value: 'aaaaaaaddddg'
 TRAFFIC = {
     'traffic_type' : 'rfc2544_throughput',
     'frame_rate' : 100,
@@ -264,6 +278,11 @@ TRAFFIC = {
         'enabled': False,
         'type': 'Default',
     },
+    'imix': {
+        'enabled': False,
+        'type': 'genome',
+        'genome': 'aaaaaaaddddg',
+    },
 }
 
 #path to traffic generators directory.