# License for the specific language governing permissions and limitations
# under the License.
-from traffic_base import AbstractTrafficGenerator
-import traffic_utils as utils
+from nfvbench.log import LOG
+from .traffic_base import AbstractTrafficGenerator
+from . import traffic_utils as utils
class DummyTG(AbstractTrafficGenerator):
Useful for unit testing without actually generating any traffic.
"""
- def __init__(self, config):
- AbstractTrafficGenerator.__init__(self, config)
+ def __init__(self, traffic_client):
+ AbstractTrafficGenerator.__init__(self, traffic_client)
self.port_handle = []
self.rates = []
self.l2_frame_size = 0
- self.duration_sec = self.config.duration_sec
- self.intf_speed = config.generator_config.intf_speed
+ self.duration_sec = traffic_client.config.duration_sec
+ self.intf_speed = traffic_client.generator_config.intf_speed
+ self.set_response_curve()
+ self.packet_list = None
def get_version(self):
return "0.1"
- def init(self):
- pass
-
def get_tx_pps_dropped_pps(self, tx_rate):
- '''Get actual tx packets based on requested tx rate
+ """Get actual tx packets based on requested tx rate.
:param tx_rate: requested TX rate with unit ('40%', '1Mbps', '1000pps')
:return: the actual TX pps and the dropped pps corresponding to the requested TX rate
- '''
+ """
dr, tx = self.__get_dr_actual_tx(tx_rate)
actual_tx_bps = utils.load_to_bps(tx, self.intf_speed)
avg_packet_size = utils.get_average_packet_size(self.l2_frame_size)
return int(tx_packets), int(dropped)
def set_response_curve(self, lr_dr=0, ndr=100, max_actual_tx=100, max_11_tx=100):
- '''Set traffic gen response characteristics
+ """Set traffic gen response characteristics.
Specifies the drop rate curve and the actual TX curve
:param float lr_dr: The actual drop rate at TX line rate (in %, 0..100)
:param float ndr: The true NDR (0 packet drop) in % (0..100) of line rate"
:param float max_actual_tx: highest actual TX when requested TX is 100%
:param float max_11_tx: highest requested TX that results in same actual TX
- '''
+ """
self.target_ndr = ndr
if ndr < 100:
self.dr_slope = float(lr_dr) / (100 - ndr)
self.tx_slope = 0
def __get_dr_actual_tx(self, requested_tx_rate):
- '''Get drop rate at given requested tx rate
+ """Get drop rate at given requested tx rate.
+
:param float requested_tx_rate: requested tx rate in % (0..100)
:return: the drop rate and actual tx rate at that requested_tx_rate in % (0..100)
- '''
+ """
if requested_tx_rate <= self.max_11_tx:
actual_tx = requested_tx_rate
else:
return dr, actual_tx
def connect(self):
- ports = list(self.config.generator_config.ports)
+ ports = list(self.traffic_client.generator_config.ports)
self.port_handle = ports
- def is_arp_successful(self):
- return True
-
- def config_interface(self):
- pass
-
- def create_traffic(self, l2frame_size, rates, bidirectional, latency=True):
+ def create_traffic(self, l2frame_size, rates, bidirectional, latency=True, e2e=False):
self.rates = [utils.to_rate_str(rate) for rate in rates]
self.l2_frame_size = l2frame_size
pass
def get_stats(self):
- '''Get stats from current run.
+ """Get stats from current run.
The binary search mainly looks at 2 results to make the decision:
actual tx packets
From the Requested TX rate - we get the Actual TX rate and the RX drop rate
From the Run duration and actual TX rate - we get the actual total tx packets
From the Actual tx packets and RX drop rate - we get the RX dropped packets
- '''
+ """
result = {}
total_tx_pps = 0
result['total_tx_rate'] = total_tx_pps
return result
+ def get_stream_stats(self, tg_stats, if_stats, latencies, chain_idx):
+ for port in range(2):
+ if_stats[port].tx = 1000
+ if_stats[port].rx = 1000
+ latencies[port].min_usec = 10
+ latencies[port].max_usec = 100
+ latencies[port].avg_usec = 50
+
+ def get_macs(self):
+ return ['00:00:00:00:00:01', '00:00:00:00:00:02']
+
+ def get_port_speed_gbps(self):
+ """Return the local port speeds.
+
+ return: a list of speed in Gbps indexed by the port#
+ """
+ return [10, 10]
+
def clear_stats(self):
pass
def start_traffic(self):
pass
+ def fetch_capture_packets(self):
+ def _get_packet_capture(mac):
+ # convert text to binary
+ src_mac = bytearray.fromhex(mac.replace(':', '')).decode()
+ return {'binary': bytes('SSSSSS' + src_mac, 'ascii')}
+
+ # for packet capture, generate 2*scc random packets
+ # normally we should generate packets coming from the right dest macs
+ self.packet_list = []
+ for dest_macs in self.traffic_client.generator_config.get_dest_macs():
+ for mac in dest_macs:
+ self.packet_list.append(_get_packet_capture(mac))
+
def stop_traffic(self):
pass
+ def start_capture(self):
+ pass
+
+ def stop_capture(self):
+ pass
+
def cleanup(self):
pass
+
+ def set_mode(self):
+ pass
+
+ def set_service_mode(self, enabled=True):
+ pass
+
+ def resolve_arp(self):
+ """Resolve ARP sucessfully."""
+ def get_macs(port, scc):
+ return ['00:00:00:00:%02x:%02x' % (port, chain) for chain in range(scc)]
+ scc = self.traffic_client.generator_config.service_chain_count
+ res = [get_macs(port, scc) for port in range(2)]
+ LOG.info('Dummy TG ARP: %s', str(res))
+ return res
Code Review / nfvbench.git / blobdiff