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trex-txrx-profile.py
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trex-txrx-profile.py
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from __future__ import print_function
import sys, getopt
sys.path.append('/opt/trex/current/automation/trex_control_plane/interactive')
import argparse
import string
import datetime
import math
import threading
import uuid
from decimal import *
from trex.stl.api import *
from trex_tg_lib import *
class t_global(object):
args=None
constants=None
variables=None
def myprint(*args, **kwargs):
stderr_only = False
if 'stderr_only' in kwargs:
stderr_only = kwargs['stderr_only']
del kwargs['stderr_only']
if not stderr_only:
print(*args, **kwargs)
if stderr_only or t_global.args.mirrored_log:
print(*args, file = sys.stderr, **kwargs)
return
def setup_global_constants ():
forward_direction = '->'
reverse_direction = '<-'
t_global.constants = { 'forward_direction': forward_direction,
'reverse_direction': reverse_direction,
'both_directions': "%s%s" % (reverse_direction, forward_direction),
'directions': [ forward_direction,
reverse_direction ],
}
def setup_global_variables ():
t_global.variables = { 'packet_resources': { 'ips': { 'dynamic_streams': { 'octet_1': 10,
'octet_2': { 'start': 2,
'stop': 255,
'current': 2 },
'octet_3': 0,
'octet_4': 0 },
'static_streams': { 'octet_1': 10,
'octet_2': { 'A': 0,
'B': 1 },
'octet_3': { 'A': { 'start': 0,
'stop': 255,
'current': 0 },
'B': { 'start': 0,
'stop': 255,
'current': 0 } },
'octet_4': { 'A': { 'start': 0,
'stop': 255,
'current': 0 },
'B': { 'start': 0,
'stop': 255,
'current': 0 } } } },
'ports': { 'src': 32768,
'dst': 49152 },
'mac_prefixes': [],
'stream_ids': {},
'vlan': None },
'uuids': [] }
def process_options ():
parser = argparse.ArgumentParser(usage="generate network traffic and report packet loss")
parser.add_argument('--trex-host',
dest='trex_host',
help='Hostname/IP address of the server where TRex is running',
default='localhost',
type = str
)
parser.add_argument('--debug',
dest='debug',
help='Should debugging be enabled',
action = 'store_true'
)
parser.add_argument('--mirrored-log',
dest='mirrored_log',
help='Should the logging sent to STDOUT be mirrored on STDERR',
action = 'store_true',
)
parser.add_argument('--enable-profiler',
dest='enable_profiler',
help='Should the TRex profiler be enabled',
action = 'store_true',
)
parser.add_argument('--device-pairs',
dest='device_pairs',
help='List of device pairs in the for A:B[,C:D][,E:F][,...]',
default="0:1",
)
parser.add_argument('--active-device-pairs',
dest='active_device_pairs',
help='List of active device pairs in the for A:B[,C:D][,E:F][,...]',
default="--",
)
parser.add_argument('--runtime',
dest='runtime',
help='trial period in seconds',
default=30,
type = int,
)
parser.add_argument('--runtime-tolerance',
dest='runtime_tolerance',
help='The percentage of time that the test is allowed in excess of the requested runtime before it is stopped',
default=5,
type = float,
)
parser.add_argument('--rate-modifier',
dest='rate_modifier',
help='Percentage to modifiy the traffic profile\'s specified rates by',
default = 100.0,
type = float
)
parser.add_argument('--measure-latency',
dest='measure_latency',
help='Collect latency statistics or not',
action = 'store_true'
)
parser.add_argument('--latency-rate',
dest='latency_rate',
help='Rate to send latency packets per second',
default = 1000,
type = int
)
parser.add_argument('--max-loss-pct',
dest='max_loss_pct',
help='Maximum percentage of packet loss',
default=0.002,
type = float
)
parser.add_argument('--disable-flow-cache',
dest='enable_flow_cache',
help='Force disablement of the flow cache',
action = 'store_false',
)
parser.add_argument('--teaching-measurement-interval',
dest='teaching_measurement_interval',
help='Interval to send teaching packets on from the receiving port during the measurement phase in seconds',
default = 10.0,
type = float
)
parser.add_argument('--teaching-warmup-packet-rate',
dest='teaching_warmup_packet_rate',
help='Rate to send teaching packets at from the receiving port in packets per second (pps) during the warmup',
default = 1000,
type = int
)
parser.add_argument('--teaching-measurement-packet-rate',
dest='teaching_measurement_packet_rate',
help='Rate to send teaching packets at from the receiving port in packets per second (pps) during the measurement phase',
default = 1000,
type = int
)
parser.add_argument('--traffic-profile',
dest='traffic_profile',
help='Name of the file containing traffic profiles to load',
default = '',
type = str
)
parser.add_argument('--random-seed',
dest='random_seed',
help='Specify a fixed random seed for repeatable results (defaults to not repeatable)',
default = None,
type = float
)
parser.add_argument('--profiler-interval',
dest='profiler_interval',
help='What interval (in seconds) should the TRex profiler collect data',
default = 3.0,
type = float
)
parser.add_argument('--profiler-logfile',
dest='profiler_logfile',
help='Name of the file to log the profiler to',
default = 'trex-profiler.log',
type = str
)
parser.add_argument('--no-promisc',
dest='no_promisc',
help='Do not use promiscuous mode for network interfaces (usually needed for virtual-functions)',
action = 'store_true'
)
parser.add_argument('--binary-search-synchronize',
dest='binary_search_synchronize',
help='Enable synchronization through binary-search.py. Used to coordinate with other traffic generators.',
action='store_true'
)
t_global.args = parser.parse_args()
if t_global.args.active_device_pairs == '--':
t_global.args.active_device_pairs = t_global.args.device_pairs
random.seed(t_global.args.random_seed)
myprint(t_global.args)
def get_stream_ip (stream, port_id):
ip = ""
if stream['flow_mods']['ip']['dst'] or stream['flow_mods']['ip']['src']:
if t_global.variables['packet_resources']['ips']['dynamic_streams']['octet_2']['current'] > t_global.variables['packet_resources']['ips']['dynamic_streams']['octet_2']['stop']:
raise ValueError("Exhausted dynamic stream IP address pool")
ip = "%d.%d.%d.%d" % (t_global.variables['packet_resources']['ips']['dynamic_streams']['octet_1'],
t_global.variables['packet_resources']['ips']['dynamic_streams']['octet_2']['current'],
t_global.variables['packet_resources']['ips']['dynamic_streams']['octet_3'],
t_global.variables['packet_resources']['ips']['dynamic_streams']['octet_4'])
t_global.variables['packet_resources']['ips']['dynamic_streams']['octet_2']['current'] += 1
else:
if t_global.variables['packet_resources']['ips']['static_streams']['octet_4'][port_id]['current'] > t_global.variables['packet_resources']['ips']['static_streams']['octet_4'][port_id]['stop'] and t_global.variables['packet_resources']['ips']['static_streams']['octet_3'][port_id]['current'] > t_global.variables['packet_resources']['ips']['static_streams']['octet_3'][port_id]['stop']:
raise ValueError("Exhausted static stream IP address pool")
ip = "%d.%d.%d.%d" % (t_global.variables['packet_resources']['ips']['static_streams']['octet_1'],
t_global.variables['packet_resources']['ips']['static_streams']['octet_2'][port_id],
t_global.variables['packet_resources']['ips']['static_streams']['octet_3'][port_id]['current'],
t_global.variables['packet_resources']['ips']['static_streams']['octet_4'][port_id]['current'])
t_global.variables['packet_resources']['ips']['static_streams']['octet_4'][port_id]['current'] += 1
if t_global.variables['packet_resources']['ips']['static_streams']['octet_4'][port_id]['current'] > t_global.variables['packet_resources']['ips']['static_streams']['octet_4'][port_id]['stop']:
t_global.variables['packet_resources']['ips']['static_streams']['octet_4'][port_id]['current'] = t_global.variables['packet_resources']['ips']['static_streams']['octet_4'][port_id]['start']
t_global.variables['packet_resources']['ips']['static_streams']['octet_3'][port_id]['current'] += 1
return ip
def generate_random_mac ():
# ensure that we generate a unique prefix (first 4 octets) so
# that no two streams ever generate the same mac address
while True:
mac_prefix = "%02x:%02x:%02x:%02x" % (0x0,
0x16,
0x3e,
random.randint(0, 255))
if not mac_prefix in t_global.variables['packet_resources']['mac_prefixes']:
t_global.variables['packet_resources']['mac_prefixes'].append(mac_prefix)
break
return "%s:%02x:%02x" % (mac_prefix,
random.randint(0, 255),
random.randint(0, 255))
def setup_stream_packet_values (stream):
if not stream['the_packet'] is None:
if not 'packet_values' in stream:
stream['packet_values'] = { 'vlan': { 'A': t_global.variables['packet_resources']['vlan'],
'B': t_global.variables['packet_resources']['vlan'] },
'ports': { 'A': { 'src': t_global.variables['packet_resources']['ports']['src'],
'dst': t_global.variables['packet_resources']['ports']['dst'] },
'B': { 'src': t_global.variables['packet_resources']['ports']['src'],
'dst': t_global.variables['packet_resources']['ports']['dst'] } } }
layer_counter=0
while True:
layer = stream['the_packet'].getlayer(layer_counter)
if not layer is None:
#myprint("Layer %d is '%s'" % (layer_counter, layer.name))
if layer.name == 'Ethernet':
stream['packet_values']['macs'] = { 'A': layer.src,
'B': layer.dst }
elif layer.name == 'Dot1Q':
stream['packet_values']['vlan'] = { 'A': layer.vlan,
'B': layer.vlan }
elif layer.name == 'IP':
stream['packet_values']['ips'] = { 'A': layer.src,
'B': layer.dst }
elif layer.name == 'TCP' or layer.name == 'UDP':
stream['packet_values']['ports'] = { 'A': { 'src': layer.sport,
'dst': layer.dport },
'B': { 'src': layer.sport,
'dst': layer.dport } }
else:
break
layer_counter += 1
if stream['stream_id']:
t_global.variables['packet_resources']['stream_ids'][stream['stream_id']] = stream['packet_values']
else:
if stream['stream_id'] and stream['stream_id'] in t_global.variables['packet_resources']['stream_ids']:
stream['packet_values'] = t_global.variables['packet_resources']['stream_ids'][stream['stream_id']]
else:
if not 'packet_values' in stream:
stream['packet_values'] = { 'ports': { 'A': { 'src': t_global.variables['packet_resources']['ports']['src'],
'dst': t_global.variables['packet_resources']['ports']['dst'] },
'B': { 'src': t_global.variables['packet_resources']['ports']['src'],
'dst': t_global.variables['packet_resources']['ports']['dst'] } },
'ips': { 'A': get_stream_ip(stream, 'A'),
'B': get_stream_ip(stream, 'B') },
'macs': { 'A': generate_random_mac(),
'B': generate_random_mac() },
'vlan': { 'A': t_global.variables['packet_resources']['vlan'],
'B': t_global.variables['packet_resources']['vlan'] } }
if stream['stream_id']:
t_global.variables['packet_resources']['stream_ids'][stream['stream_id']] = stream['packet_values']
return
def get_uuid ():
while True:
my_uuid = str(uuid.uuid4())
if not my_uuid in t_global.variables['uuids']:
t_global.variables['uuids'].append(my_uuid)
return(my_uuid)
class stl_stream:
def __init__(self,
direction = '',
uuid = None,
mode_uuid = None,
segment_id = -1,
segment_part = -1,
packet = None,
flow_stats_type = None,
flow_stats_pg_id = 0,
mode = None,
name = '',
next_name = '',
dummy = True,
isg = 0.0,
self_start = True,
packet_protocol = 'UDP',
pps = 0.0,
duration = 0,
flow_count = 0,
packet_count = 0,
frame_size = 64,
offset = 0,
substream = False,
packets_per_burst = 0,
ibg = 0.0,
intervals = 0,
standard = False,
teaching = False,
stream_type = ''):
self.direction = direction
self.uuid = uuid
self.mode_uuid = mode_uuid
self.segment_id = segment_id
self.segment_part = segment_part
self.packet = packet
self.flow_stats_type = flow_stats_type
self.flow_stats_pg_id = flow_stats_pg_id
self.mode = mode
self.name = name
self.next_name = next_name
self.dummy = dummy
self.isg = isg
self.self_start = self_start
self.packet_protocol = packet_protocol
self.pps = pps
self.duration = duration
self.flow_count = flow_count
self.packet_count = packet_count
self.frame_size = frame_size
self.offset = offset
self.substream = substream
self.packets_per_burst = packets_per_burst
self.ibg = ibg
self.intervals = intervals
self.standard = standard
self.teaching = teaching
self.stream_type = stream_type
def to_dictionary(self):
return({ 'direction': self.direction,
'uuid': self.uuid,
'mode_uuid': self.mode_uuid,
'segment_id': self.segment_id,
'segment_part': self.segment_part,
'packet': self.packet,
'flow_stats_type': self.flow_stats_type,
'flow_stats_pg_id': self.flow_stats_pg_id,
'mode': self.mode,
'name': self.name,
'next_name': self.next_name,
'dummy': self.dummy,
'isg': self.isg,
'self_start': self.self_start,
'packet_protocol': self.packet_protocol,
'pps': self.pps,
'duration': self.duration,
'flow_count': self.flow_count,
'packet_count': self.packet_count,
'frame_size': self.frame_size,
'offset': self.offset,
'substream': self.substream,
'packets_per_burst': self.packets_per_burst,
'ibg': self.ibg,
'intervals': self.intervals,
'standard': self.standard,
'teaching': self.teaching,
'stream_type': self.stream_type })
def create_stream(self):
stream_control = None
if self.mode == 'burst':
if self.dummy:
# there is no reason to fake traffic at a high
# rate because that just adds overhead, so fake it
# slowly while adjusting accordingly
dummy_pps = 1.0
dummy_pps_ratio = dummy_pps/self.pps
self.packet_count = int(math.ceil(self.packet_count * dummy_pps_ratio))
self.pps = dummy_pps
stream_control = STLTXSingleBurst(pps = self.pps, total_pkts = self.packet_count)
elif self.mode == 'multiburst':
stream_control = STLTXMultiBurst(pkts_per_burst = self.packets_per_burst, ibg = sec_to_usec(self.ibg), count = int(self.intervals), pps = self.pps)
flow_stats = None
my_pg_id = self.flow_stats_pg_id
if self.dummy:
my_pg_id = 0
if self.flow_stats_type == 'default':
flow_stats = STLFlowStats(pg_id = int(my_pg_id))
elif self.flow_stats_type == 'latency':
flow_stats = STLFlowLatencyStats(pg_id = int(my_pg_id))
return(STLStream(packet = self.packet,
flow_stats = flow_stats,
mode = stream_control,
name = self.name,
next = self.next_name,
dummy_stream = self.dummy,
isg = sec_to_usec(self.isg),
self_start = self.self_start))
def append_config(self, device_pair):
if not self.dummy and not self.teaching:
device_pair[self.direction]['traffic_profile'][self.flow_stats_type]['protocol'].append(self.packet_protocol)
device_pair[self.direction]['traffic_profile'][self.flow_stats_type]['pps'].append(self.pps)
device_pair[self.direction]['traffic_profile'][self.flow_stats_type]['pg_ids'].append(self.flow_stats_pg_id)
device_pair[self.direction]['traffic_profile'][self.flow_stats_type]['names'].append(self.name)
device_pair[self.direction]['traffic_profile'][self.flow_stats_type]['next_stream_names'].append(self.next_name)
device_pair[self.direction]['traffic_profile'][self.flow_stats_type]['frame_sizes'].append(self.frame_size)
device_pair[self.direction]['traffic_profile'][self.flow_stats_type]['traffic_shares'].append(None)
device_pair[self.direction]['traffic_profile'][self.flow_stats_type]['self_starts'].append(self.self_start)
device_pair[self.direction]['traffic_profile'][self.flow_stats_type]['runtime'].append(self.duration)
device_pair[self.direction]['traffic_profile'][self.flow_stats_type]['stream_modes'].append(self.mode)
device_pair[self.direction]['traffic_profile'][self.flow_stats_type]['flows'].append(self.flow_count)
device_pair[self.direction]['traffic_profile'][self.flow_stats_type]['offset'].append(self.offset)
device_pair[self.direction]['traffic_profile'][self.flow_stats_type]['isg'].append(self.isg)
device_pair[self.direction]['traffic_profile'][self.flow_stats_type]['traffic_type'].append(self.stream_type)
return
class segment_object:
def __init__(self,
stage,
segment_type,
duration,
offset,
isg = 0.0,
skip = False,
standard = False):
self.stage = stage
self.type = segment_type
self.duration = duration
self.offset = offset
self.isg = isg
self.skip = skip
self.standard = standard
def to_dictionary(self):
return({ 'stage': self.stage,
'type': self.type,
'duration': self.duration,
'offset': self.offset,
'isg': self.isg,
'skip': self.skip,
'standard': self.standard })
def build_stream_segments(stream):
segments = []
segments_total_time = 0
stream_runtime = stream['duration']
if stream_runtime is None:
stream_runtime = t_global.args.runtime
else:
if stream_runtime > t_global.args.runtime:
stream_runtime = t_global.args.runtime
# build the initial list of segments, this is a very verbose list
if stream['offset']:
segments.append(segment_object(0, 'null', stream['offset'], segments_total_time))
segments_total_time += stream['offset']
if (stream_runtime + stream['offset']) > t_global.args.runtime:
stream_runtime = t_global.args.runtime - stream['offset']
if stream['repeat']:
remaining_time = t_global.args.runtime - segments_total_time
while segments_total_time < t_global.args.runtime:
if remaining_time >= stream_runtime:
segments.append(segment_object(1, 'tx', stream_runtime, segments_total_time))
segments_total_time += stream_runtime
remaining_time -= stream_runtime
if remaining_time >= stream['repeat_delay']:
segments.append(segment_object(2, 'null', stream['repeat_delay'], segments_total_time))
segments_total_time += stream['repeat_delay']
remaining_time -= stream['repeat_delay']
else:
if remaining_time:
segments.append(segment_object(3, 'null', remaining_time, segments_total_time))
segments_total_time += remaining_time
else:
if remaining_time:
segments.append(segment_object(4, 'tx', remaining_time, segments_total_time))
segments_total_time += remaining_time
else:
segments.append(segment_object(5, 'tx', stream_runtime, segments_total_time))
segments_total_time += stream_runtime
if segments_total_time < t_global.args.runtime:
remaining_time = t_global.args.runtime - segments_total_time
segments.append(segment_object(6, 'null', remaining_time, segments_total_time))
#myprint("stream segments")
#myprint(dump_json_readable(segments))
return(segments)
def build_measurement_segments(segments):
measurement_segments = copy.deepcopy(segments)
if len(measurement_segments) > 1:
# since there are multiple segments try and reduce them
trim_segments = False
for segment_idx in range(0, len(measurement_segments)-1):
# we can eliminate a dummy stream by replacing it with ISG on the following real stream
# this should produce fewer streams and use fewer pg_id resources
if measurement_segments[segment_idx].type == 'null' and measurement_segments[segment_idx+1].type == 'tx':
measurement_segments[segment_idx+1].isg += (measurement_segments[segment_idx].isg + measurement_segments[segment_idx].duration)
measurement_segments[segment_idx+1].offset -= (measurement_segments[segment_idx].isg + measurement_segments[segment_idx].duration)
measurement_segments[segment_idx].stage = 7
measurement_segments[segment_idx+1].stage = 7
measurement_segments[segment_idx].skip = True
trim_segments = True
if trim_segments:
# get rid of all segments marked to be skipped
tmp_segments = []
for segment in measurement_segments:
if not segment.skip:
# merge the isg and duration if the segment is null
if segment.type == 'null' and segment.isg:
segment.duration += segment.isg
segment.isg = 0
tmp_segments.append(segment)
measurement_segments = tmp_segments
# determine if this is a 'standard' stream -- meaning it is the
# first segment and has no ISG and no offset
if len(measurement_segments) == 1:
for segment in measurement_segments:
if segment.isg == segment.offset == 0:
segment.standard = True
#myprint("measurement segments")
#myprint(dump_json_readable(measurement_segments))
return(measurement_segments)
def build_warmup_segments(segments, rate, flows):
warmup_segments = copy.deepcopy(segments)
warmup_duration = float(flows) / float(rate)
warmup_gap = 1.0
if len(warmup_segments) > 1:
# since there are multiple segments try and reduce them
trim_segments = False
for segment_idx in range(0, len(warmup_segments)-1):
if segment_idx == 0 and warmup_segments[segment_idx].type == 'tx' and warmup_segments[segment_idx].isg == 0 and warmup_segments[segment_idx].offset == 0:
warmup_segments[segment_idx].standard = True
elif warmup_segments[segment_idx].type == 'null' and warmup_segments[segment_idx+1].type == 'tx':
warmup_segments[segment_idx].type = 'tx'
warmup_segments[segment_idx+1].type = 'null'
warmup_segments[segment_idx].isg = warmup_segments[segment_idx].duration - warmup_duration - warmup_gap
warmup_segments[segment_idx].duration = warmup_duration
warmup_segments[segment_idx+1].duration += warmup_gap
warmup_segments[segment_idx+1].isg = 0
warmup_segments[segment_idx+1].offset -= (warmup_duration + warmup_gap)
# determine if this is a 'standard' stream -- meaning it is the
# first segment and has no ISG and no offset
if len(warmup_segments) == 1:
for segment in warmup_segments:
if segment.isg == segment.offset == 0:
segment.standard = True
#myprint("warmup segments")
#myprint(dump_json_readable(warmup_segments))
return(warmup_segments)
def create_stream (stream, device_pair, direction, other_direction, flow_scaler):
if not stream['enabled']:
myprint("")
myprint("\tSkipping stream %d for '%s' due to explicit disablement in the profile" % (stream['profile_id'], device_pair[direction]['id_string']))
return
if stream['offset'] >= t_global.args.runtime:
myprint("")
myprint("\tSkipping stream %d for '%s' due to offset >= runtime" % (stream['profile_id'], device_pair[direction]['id_string']))
return
segments = build_stream_segments(stream)
if not stream['repeat_flows'] and stream['repeat']:
for segment in segments:
if segment.type == 'tx':
new_stream = copy.deepcopy(stream)
new_stream['repeat'] = False
new_stream['duration'] = segment.duration
new_stream['offset'] = segment.offset + segment.isg
new_stream['isg'] = 0
new_stream['repeat_delay'] = None
new_stream['repeat_flows'] = True
create_stream(new_stream, device_pair, direction, other_direction, flow_scaler)
return
# assume direction == t_global.constants['forward_direction']
src_port = 'A'
dst_port = 'B'
if direction == t_global.constants['reverse_direction']:
src_port = 'B'
dst_port = 'A'
protocols = [ stream['protocol'] ]
latency = stream['latency']
if not t_global.args.measure_latency:
latency = False
if stream['flow_mods']['protocol']:
if protocols[0] == 'UDP':
protocols.append('TCP')
elif protocols[0] == 'TCP':
protocols.append('UDP')
stream_modes = [ 'default' ]
if stream['latency_only']:
if latency:
stream_modes = [ 'latency' ]
else:
stream_modes = []
elif latency:
stream_modes.append('latency')
stream_flows = int(stream['flows'] * flow_scaler)
stream_packets = { 'measurement': [],
'teaching': [] }
flow_stats = None
if not stream['the_packet'] is None:
stream_packets['teaching'].append({ 'protocol': "user-pkt",
'packet': load_user_pkt(stream['the_packet'],
stream['frame_size'],
stream['packet_values']['macs'][dst_port],
stream['packet_values']['macs'][src_port],
stream['packet_values']['ips'][dst_port],
stream['packet_values']['ips'][src_port],
stream['packet_values']['ports'][dst_port]['src'],
stream['packet_values']['ports'][src_port]['dst'],
stream['flow_mods'],
stream_flows,
t_global.args.enable_flow_cache,
flow_offset = stream['flow_offset'],
old_mac_flow = False) })
stream_packets['measurement'].append({ 'protocol': "user-pkt",
'packet': load_user_pkt(stream['the_packet'],
stream['frame_size'],
stream['packet_values']['macs'][src_port],
stream['packet_values']['macs'][dst_port],
stream['packet_values']['ips'][src_port],
stream['packet_values']['ips'][dst_port],
stream['packet_values']['ports'][src_port]['src'],
stream['packet_values']['ports'][dst_port]['dst'],
stream['flow_mods'],
stream_flows,
t_global.args.enable_flow_cache,
flow_offset = stream['flow_offset'],
old_mac_flow = False) })
else:
if stream['frame_type'] == 'generic':
# teaching packets don't need to cover all the protocols; they just need to cover all the MAC addresses
stream_packets['teaching'].append({ 'protocol': "%s-%s" % (stream['frame_type'], protocols[0]),
'packet': create_generic_pkt(stream['frame_size'],
stream['packet_values']['macs'][dst_port],
stream['packet_values']['macs'][src_port],
stream['packet_values']['ips'][dst_port],
stream['packet_values']['ips'][src_port],
stream['packet_values']['ports'][dst_port]['src'],
stream['packet_values']['ports'][src_port]['dst'],
protocols[0],
stream['packet_values']['vlan'][dst_port],
stream['flow_mods'],
stream_flows,
t_global.args.enable_flow_cache,
flow_offset = stream['flow_offset'],
old_mac_flow = False) })
for protocol in protocols:
stream_packets['measurement'].append({ 'protocol': "%s-%s" % (stream['frame_type'], protocol),
'packet': create_generic_pkt(stream['frame_size'],
stream['packet_values']['macs'][src_port],
stream['packet_values']['macs'][dst_port],
stream['packet_values']['ips'][src_port],
stream['packet_values']['ips'][dst_port],
stream['packet_values']['ports'][src_port]['src'],
stream['packet_values']['ports'][dst_port]['dst'],
protocol,
stream['packet_values']['vlan'][src_port],
stream['flow_mods'],
stream_flows,
t_global.args.enable_flow_cache,
flow_offset = stream['flow_offset'],
old_mac_flow = False) })
elif stream['frame_type'] == 'garp':
# GARP packet types: 0x1=request, 0x2=reply
garp_packets = [ { 'name': 'request',
'opcode': 0x1 },
{ 'name': 'response',
'opcode': 0x2 } ]
for garp_packet in garp_packets:
stream_packets['measurement'].append({ 'protocol': "%s-%s" % (stream['frame_type'], garp_packet['name']),
'packet': create_garp_pkt(stream['packet_values']['macs'][src_port],
stream['packet_values']['ips'][src_port],
stream['packet_values']['vlan'][src_port],
garp_packet['opcode'],
stream['flow_mods'],
stream_flows,
t_global.args.enable_flow_cache,
flow_offset = stream['flow_offset'],
old_mac_flow = False) })
stream_packets['teaching'].append({ 'protocol': "%s-%s" % (stream['frame_type'], garp_packet['name']),
'packet': create_garp_pkt(stream['packet_values']['macs'][dst_port],
stream['packet_values']['ips'][dst_port],
stream['packet_values']['vlan'][dst_port],
garp_packet['opcode'],
stream['flow_mods'],
stream_flows,
t_global.args.enable_flow_cache,
flow_offset = stream['flow_offset'],
old_mac_flow = False) })
elif stream['frame_type'] == 'icmp':
stream_packets['measurement'].append({ 'protocol': stream['frame_type'],
'packet': create_icmp_pkt(stream['frame_size'],
stream['packet_values']['macs'][src_port],
stream['packet_values']['macs'][dst_port],
stream['packet_values']['ips'][src_port],
stream['packet_values']['ips'][dst_port],
stream['packet_values']['vlan'][src_port],
stream['flow_mods'],
stream_flows,
t_global.args.enable_flow_cache,
flow_offset = stream['flow_offset'],
old_mac_flow = False) })
stream_packets['teaching'].append({ 'protocol': stream['frame_type'],
'packet': create_icmp_pkt(stream['frame_size'],
stream['packet_values']['macs'][dst_port],
stream['packet_values']['macs'][src_port],
stream['packet_values']['ips'][dst_port],
stream['packet_values']['ips'][src_port],
stream['packet_values']['vlan'][dst_port],
stream['flow_mods'],
stream_flows,
t_global.args.enable_flow_cache,
flow_offset = stream['flow_offset'],
old_mac_flow = False) })
else:
raise ValueError("Invalid frame_type: %s" % (stream['frame_type']))
stream_rate = stream['rate']
measurement_segments = build_measurement_segments(segments)
if not len(measurement_segments):
raise ValueError("Hmm, for some reason there are no measurement segments.")
stl_stream_types = [ 'traffic_streams', 'teaching_measurement_traffic_streams', 'teaching_warmup_traffic_streams', 'teaching_warmup_standard_traffic_streams' ]
stl_streams = { }
for stl_stream_type in stl_stream_types:
stl_streams[stl_stream_type] = []
# generate a uuid to represent this measurement stream
stream_uuid = get_uuid()
for stream_type in stream['stream_types']:
if stream_type != 'measurement' and stream_type != 'teaching_warmup' and stream_type != 'teaching_measurement' and stream_type != 'ddos':
raise ValueError("Invalid stream_type: %s" % (stream_type))
# 'measurement' and 'ddos' (Distributed Denial-of-Service)
# packets are exactly the same -- except we don't expect to
# get any 'ddos' packets back because they should be filtered
# by the DUT
if stream_type == 'measurement' or stream_type == 'ddos':
for stream_mode in stream_modes:
# generate a uuid to represent this measurement stream's mode
stream_mode_uuid = get_uuid()
stream_rate = stream['rate']
if len(stream_packets['measurement']) > 1:
stream_rate /= len(protocols)
if 'latency' in stream_modes and stream_mode == 'default':
stream_rate -= t_global.args.latency_rate
if stream_rate <= 0:
continue
elif stream_mode == 'latency' and stream_rate > t_global.args.latency_rate:
stream_rate = t_global.args.latency_rate
for stream_packet in stream_packets['measurement']:
stream_pg_id = None
myprint("")
myprint("\t'%s' stream for '%s' with uuid=%s, mode_uuid=%s, flows=%s, frame size=%s, rate=%s, and mode=%s" % (stream_type,
device_pair[direction]['id_string'],
stream_uuid,
stream_mode_uuid,
commify(stream_flows),
commify(stream['frame_size']),
commify(stream_rate),
stream_mode))
myprint("\t\tSegments:")
segment_auto_start = True
base_stream_name = ""
segment_part_counter = 1
for segment_idx in range(0, len(measurement_segments)):
if measurement_segments[segment_idx].type == 'tx' and (stream_pg_id is None or stream_mode == 'latency'):
if device_pair[direction]['pg_ids'][stream_mode]['available']:
stream_pg_id = device_pair[direction]['pg_ids'][stream_mode]['start_index'] + (device_pair[direction]['pg_ids'][stream_mode]['total'] - device_pair[direction]['pg_ids'][stream_mode]['available'])
device_pair[direction]['pg_ids'][stream_mode]['available'] -= 1
else:
raise RuntimeError("Not enough available pg_ids for the requested stream configuration")
base_stream_name = "stream-%s_mode-%s_%s_%s" % (stream_uuid, stream_mode_uuid, stream_mode, stream_packet['protocol'])
if stream['stream_id']:
base_stream_name = "%s_%s" % (base_stream_name, stream['stream_id'])
stream_name = "%s_part-%d" % (base_stream_name, segment_part_counter)
next_stream_name = "%s_part-%d" % (base_stream_name, segment_part_counter+1)
dummy = True
flow_stats = None
tmp_stream_pg_id = None
if measurement_segments[segment_idx].type == 'tx':
dummy = False
tmp_stream_pg_id = stream_pg_id
else:
tmp_stream_pg_id = 'null'
myprint("\t\t\t%d: name=%s, pg_id=%s, type=%s, duration=%s, offset=%s, and isg=%s" % (segment_idx+1,
stream_name,
tmp_stream_pg_id,
measurement_segments[segment_idx].type,
commify(measurement_segments[segment_idx].duration),
commify(measurement_segments[segment_idx].offset),
commify(measurement_segments[segment_idx].isg)))
if (len(measurement_segments) == 1) or (segment_idx == (len(measurement_segments) - 1)):
next_stream_name = None
if segment_idx > 0:
segment_auto_start = False
stream_total_pkts = int(stream_rate * measurement_segments[segment_idx].duration)
# check if the total number of packets to TX is greater than can be held in an uint32 (API limit)
max_uint32 = int(4294967295)
if stream_total_pkts > max_uint32:
stream_loop_remainder = stream_total_pkts % max_uint32
stream_loops = int(((stream_total_pkts - stream_loop_remainder) / max_uint32))
if stream_loop_remainder == 0:
stream_loops -= 1
stream_loops_remainder = max_uint32
substream_self_start = segment_auto_start
substream_isg = measurement_segments[segment_idx].isg
for loop_idx in range(1, stream_loops+1):
substream_name = "%s_part-%d" % (base_stream_name, segment_part_counter)
substream_next_name = "%s_part-%d" % (base_stream_name, segment_part_counter+1)
myprint("\t\t\t\tSubstream %d with name=%s" % (loop_idx, substream_name))
stl_streams['traffic_streams'].append(stl_stream(direction = direction,
uuid = stream_uuid,
mode_uuid = stream_mode_uuid,
segment_id = segment_idx,
segment_part = segment_part_counter,
packet = stream_packet['packet'],
flow_stats_type = stream_mode,
flow_stats_pg_id = stream_pg_id,
mode = 'burst',
name = substream_name,
next_name = substream_next_name,
dummy = dummy,
isg = substream_isg,
self_start = substream_self_start,
packet_protocol = stream_packet['protocol'],
pps = stream_rate,
duration = (max_uint32 / stream_rate),
offset = 0, # fix me
flow_count = stream_flows,
frame_size = stream['frame_size'],
packet_count = max_uint32,
substream = True,
standard = False,
stream_type = stream_type))
substream_self_start = False
substream_isg = 0.0
segment_part_counter += 1
substream_name = "%s_part-%d" % (base_stream_name, segment_part_counter)
if not next_stream_name is None:
next_stream_name = "%s_part-%d" % (base_stream_name, segment_part_counter+1)
myprint("\t\t\t\tSubstream %d with name=%s" % (stream_loops+1, substream_name))
stl_streams['traffic_streams'].append(stl_stream(direction = direction,
uuid = stream_uuid,
mode_uuid = stream_mode_uuid,
segment_id = segment_idx,
segment_part = segment_part_counter,
packet = stream_packet['packet'],
flow_stats_type = stream_mode,
flow_stats_pg_id = stream_pg_id,
mode = 'burst',
name = substream_name,
next_name = next_stream_name,
dummy = dummy,
isg = substream_isg,
self_start = substream_self_start,
packet_protocol = stream_packet['protocol'],
pps = stream_rate,
duration = (stream_loop_remainder / stream_rate),
offset = 0, # fix me
flow_count = stream_flows,
frame_size = stream['frame_size'],
packet_count = stream_loop_remainder,
substream = True,
standard = False,
stream_type = stream_type))
else:
stl_streams['traffic_streams'].append(stl_stream(direction = direction,
uuid = stream_uuid,
mode_uuid = stream_mode_uuid,
segment_id = segment_idx,
segment_part = segment_part_counter,
packet = stream_packet['packet'],
flow_stats_type = stream_mode,
flow_stats_pg_id = stream_pg_id,
mode = 'burst',
name = stream_name,
next_name = next_stream_name,
dummy = dummy,
isg = measurement_segments[segment_idx].isg,
self_start = segment_auto_start,
packet_protocol = stream_packet['protocol'],
pps = stream_rate,
duration = measurement_segments[segment_idx].duration,
offset = measurement_segments[segment_idx].offset,
flow_count = stream_flows,
frame_size = stream['frame_size'],
packet_count = stream_total_pkts,
standard = measurement_segments[segment_idx].standard,
stream_type = stream_type))
segment_part_counter += 1
elif stream_type == 'teaching_warmup':
# if teaching_warmup is the only type for this stream, use the stream's configured rate
# otherwise use the global default for teaching warmup rate
if len(stream['stream_types']) != 1:
stream_rate = t_global.args.teaching_warmup_packet_rate
warmup_segments = build_warmup_segments(segments, stream_rate, stream_flows)
if not len(warmup_segments):
raise ValueError("Hmm, for some reason there are no warmup segments.")
device_pair[direction]['teaching_warmup_max_runtime'] = max(device_pair[direction]['teaching_warmup_max_runtime'],
(stream_flows / stream_rate))
for stream_packet in stream_packets['teaching']:
myprint("")
myprint("\tTeaching warmup stream for '%s' with uuid=%s, flows=%s, frame size=%s, rate=%s, and protocol=%s" % (device_pair[direction]['id_string'],
stream_uuid,
commify(stream_flows),