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Traffic profile modules
=======================
TRex STLProfile profile include a list of STLStream. The profile is a ``program`` of streams with a relation betwean the streams.
Each stream can trigger another stream. Stream can be given a name for a full examples see here Manual_.
.. _Manual: ../draft_trex_stateless1.html
for example::
def create_stream (self):
# create a base packet and pad it to size
size = self.fsize - 4; # no FCS
base_pkt = Ether()/IP(src="16.0.0.1",dst="48.0.0.1")/UDP(dport=12,sport=1025)
base_pkt1 = Ether()/IP(src="16.0.0.2",dst="48.0.0.1")/UDP(dport=12,sport=1025)
base_pkt2 = Ether()/IP(src="16.0.0.3",dst="48.0.0.1")/UDP(dport=12,sport=1025)
pad = max(0, size - len(base_pkt)) * 'x'
return STLProfile( [ STLStream( isg = 1.0, # star in delay in usec
packet = STLPktBuilder(pkt = base_pkt/pad),
mode = STLTXCont( pps = 10),
),
STLStream( isg = 2.0,
packet = STLPktBuilder(pkt = base_pkt1/pad),
mode = STLTXCont( pps = 20),
),
STLStream( isg = 3.0,
packet = STLPktBuilder(pkt = base_pkt2/pad),
mode = STLTXCont( pps = 30)
)
]).get_streams()
STLProfile class
----------------
.. autoclass:: trex_stl_lib.trex_stl_streams.STLProfile
:members:
:member-order: bysource
STLStream
---------
.. autoclass:: trex_stl_lib.trex_stl_streams.STLStream
:members:
:member-order: bysource
STLStream modes
----------------
.. autoclass:: trex_stl_lib.trex_stl_streams.STLTXMode
:members:
:member-order: bysource
.. autoclass:: trex_stl_lib.trex_stl_streams.STLTXCont
:members:
:member-order: bysource
.. autoclass:: trex_stl_lib.trex_stl_streams.STLTXSingleBurst
:members:
:member-order: bysource
.. autoclass:: trex_stl_lib.trex_stl_streams.STLTXMultiBurst
:members:
:member-order: bysource
.. autoclass:: trex_stl_lib.trex_stl_streams.STLFlowStats
:members:
:member-order: bysource
STLProfile snippet
------------------
Example1::
size = self.fsize - 4; # no FCS
base_pkt = Ether()/IP(src="16.0.0.1",dst="48.0.0.1")/UDP(dport=12,sport=1025)
base_pkt1 = Ether()/IP(src="16.0.0.2",dst="48.0.0.1")/UDP(dport=12,sport=1025)
base_pkt2 = Ether()/IP(src="16.0.0.3",dst="48.0.0.1")/UDP(dport=12,sport=1025)
pad = max(0, size - len(base_pkt)) * 'x'
return STLProfile( [ STLStream( isg = 10.0, # star in delay
name ='S0',
packet = STLPktBuilder(pkt = base_pkt/pad),
mode = STLTXSingleBurst( pps = 10, total_pkts = 10),
next = 'S1'), # point to next stream
STLStream( self_start = False, # stream is disabled enable trow S0
name ='S1',
packet = STLPktBuilder(pkt = base_pkt1/pad),
mode = STLTXSingleBurst( pps = 10, total_pkts = 20),
next = 'S2' ),
STLStream( self_start = False, # stream is disabled enable trow S0
name ='S2',
packet = STLPktBuilder(pkt = base_pkt2/pad),
mode = STLTXSingleBurst( pps = 10, total_pkts = 30 )
)
]).get_streams()
Example2::
class STLS1(object):
def get_streams (self, direction = 0):
return [STLStream(packet = STLPktBuilder(pkt ="stl/yaml/udp_64B_no_crc.pcap"),
mode = STLTXCont(pps=1000),
flow_stats = STLFlowStats(pg_id = 7)),
STLStream(packet = STLPktBuilder(pkt ="stl/yaml/udp_594B_no_crc.pcap"),
mode = STLTXCont(pps=5000),
flow_stats = STLFlowStats(pg_id = 12))
]
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