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authorVratko Polak <vrpolak@cisco.com>2021-01-13 19:38:50 +0100
committerVratko Polak <vrpolak@cisco.com>2021-01-18 15:45:33 +0000
commiteedb7dff222d2590ac2cb5a5e67dc7d90317f05c (patch)
treee5de05f54c62de47cb85603dac85a4b895632a3a /GPL/traffic_profiles/trex/trex-stl-ethip4-ip4dst-rnd10000.py
parent69264aed8d43f3c4a8342dd7584f80336108c879 (diff)
Random flows: Use seeds again and increase limit.
TRex does mix seeds when distributing over workers, but it is multiplicative [0], so zero is the only bad value. Limit restricts the cycle length of PRNG (by resetting [1] the seed). We want the cycle as long as possible. [0] https://github.com/cisco-system-traffic-generator/trex-core/blob/v2.73/src/stx/stl/trex_stl_stream_vm.h#L1616 [1] https://github.com/cisco-system-traffic-generator/trex-core/blob/v2.73/src/stx/stl/trex_stl_stream_vm.h#L313-L314 Change-Id: I33a29496f0853ef60d592c988f81a9d1109b5878 Signed-off-by: Vratko Polak <vrpolak@cisco.com>
Diffstat (limited to 'GPL/traffic_profiles/trex/trex-stl-ethip4-ip4dst-rnd10000.py')
-rw-r--r--GPL/traffic_profiles/trex/trex-stl-ethip4-ip4dst-rnd10000.py35
1 files changed, 20 insertions, 15 deletions
diff --git a/GPL/traffic_profiles/trex/trex-stl-ethip4-ip4dst-rnd10000.py b/GPL/traffic_profiles/trex/trex-stl-ethip4-ip4dst-rnd10000.py
index 3ecf1a47d8..ef2dcde696 100644
--- a/GPL/traffic_profiles/trex/trex-stl-ethip4-ip4dst-rnd10000.py
+++ b/GPL/traffic_profiles/trex/trex-stl-ethip4-ip4dst-rnd10000.py
@@ -42,7 +42,7 @@ class TrafficStreams(TrafficStreamsBaseClass):
"""Stream profile."""
def __init__(self):
- """Initialization and setting of streams" parameters."""
+ """Initialization and setting of streams' parameters."""
super(TrafficStreamsBaseClass, self).__init__()
@@ -66,21 +66,21 @@ class TrafficStreams(TrafficStreamsBaseClass):
# Direction 0 --> 1
base_pkt_a = (
- Ether() /
- IP(
- src=self.p1_src_start_ip,
- dst=self.p1_dst_start_ip,
- proto=61
- )
+ Ether() /
+ IP(
+ src=self.p1_src_start_ip,
+ dst=self.p1_dst_start_ip,
+ proto=61
+ )
)
# Direction 1 --> 0
base_pkt_b = (
- Ether() /
- IP(
- src=self.p2_src_start_ip,
- dst=self.p2_dst_start_ip,
- proto=61
- )
+ Ether() /
+ IP(
+ src=self.p2_src_start_ip,
+ dst=self.p2_dst_start_ip,
+ proto=61
+ )
)
# Direction 0 --> 1
@@ -91,7 +91,9 @@ class TrafficStreams(TrafficStreamsBaseClass):
min_value=self.p1_dst_start_ip,
max_value=self.p1_dst_end_ip,
size=4,
- limit=10000
+ seed=1,
+ # Cycle length. TRex does not allow any higher value.
+ limit=(2**24 - 1)
),
STLVmWrFlowVar(
fv_name=u"dst",
@@ -111,7 +113,10 @@ class TrafficStreams(TrafficStreamsBaseClass):
min_value=self.p2_dst_start_ip,
max_value=self.p2_dst_end_ip,
size=4,
- limit=10000
+ # Using a different seed to be extra sure
+ # nothing useful gets cached.
+ seed=2,
+ limit=(2**24 - 1)
),
STLVmWrFlowVar(
fv_name=u"dst",