# under the License.
import abc
+import sys
from nfvbench.log import LOG
-import traffic_utils
+from . import traffic_utils
-class TrafficGeneratorException(Exception):
- pass
+class Latency(object):
+ """A class to hold latency data."""
+
+ def __init__(self, latency_list=None):
+ """Create a latency instance.
+
+ latency_list: aggregate all latency values from list if not None
+ """
+ self.min_usec = sys.maxsize
+ self.max_usec = 0
+ self.avg_usec = 0
+ self.hdrh = None
+ if latency_list:
+ for lat in latency_list:
+ if lat.available():
+ self.min_usec = min(self.min_usec, lat.min_usec)
+ self.max_usec = max(self.max_usec, lat.max_usec)
+ self.avg_usec += lat.avg_usec
+ # round to nearest usec
+ self.avg_usec = int(round(float(self.avg_usec) / len(latency_list)))
+
+ def available(self):
+ """Return True if latency information is available."""
+ return self.min_usec != sys.maxsize
+class TrafficGeneratorException(Exception):
+ """Exception for traffic generator."""
+
class AbstractTrafficGenerator(object):
- def __init__(self, config):
- self.config = config
- self.imix_l2_sizes = [64, 594, 1518]
- self.imix_ratios = [7, 4, 1]
- self.imix_avg_l2_size = 0
- self.adjust_imix_min_size(64)
- @abc.abstractmethod
- def get_version(self):
- # Must be implemented by sub classes
- return None
+ def __init__(self, traffic_client):
+ self.traffic_client = traffic_client
+ self.generator_config = traffic_client.generator_config
+ self.config = traffic_client.config
@abc.abstractmethod
- def init(self):
+ def get_version(self):
# Must be implemented by sub classes
return None
return None
@abc.abstractmethod
- def config_interface(self):
- # Must be implemented by sub classes
- return None
-
- @abc.abstractmethod
- def create_traffic(self, l2frame_size, rates, bidirectional, latency=True):
+ def create_traffic(self, l2frame_size, rates, bidirectional, latency=True, e2e=False):
# Must be implemented by sub classes
return None
def modify_rate(self, rate, reverse):
+ """Change the rate per port.
+
+ rate: new rate in % (0 to 100)
+ reverse: 0 for port 0, 1 for port 1
+ """
port_index = int(reverse)
port = self.port_handle[port_index]
self.rates[port_index] = traffic_utils.to_rate_str(rate)
- LOG.info('Modified traffic stream for %s, new rate=%s.', port,
- traffic_utils.to_rate_str(rate))
-
- def modify_traffic(self):
- # Must be implemented by sub classes
- return None
+ LOG.info('Modified traffic stream for port %s, new rate=%s.', port, self.rates[port_index])
@abc.abstractmethod
def get_stats(self):
# Must be implemented by sub classes
return None
- def clear_traffic(self):
- # Must be implemented by sub classes
- return None
-
@abc.abstractmethod
def start_traffic(self):
# Must be implemented by sub classes
@abc.abstractmethod
def cleanup(self):
- # Must be implemented by sub classes
+ """Cleanup the traffic generator."""
return None
- def adjust_imix_min_size(self, min_size):
- # assume the min size is always the first entry
- self.imix_l2_sizes[0] = min_size
- self.imix_avg_l2_size = sum(
- [1.0 * imix[0] * imix[1] for imix in zip(self.imix_l2_sizes, self.imix_ratios)]) / sum(
- self.imix_ratios)
- traffic_utils.imix_avg_l2_size = self.imix_avg_l2_size
+ def clear_streamblock(self):
+ """Clear all streams from the traffic generator."""
+
+ @abc.abstractmethod
+ def resolve_arp(self):
+ """Resolve all configured remote IP addresses.
+
+ return: None if ARP failed to resolve for all IP addresses
+ else a dict of list of dest macs indexed by port#
+ the dest macs in the list are indexed by the chain id
+ """
+
+ @abc.abstractmethod
+ def get_macs(self):
+ """Return the local port MAC addresses.
+
+ return: a list of MAC addresses indexed by the port#
+ """
+
+ @abc.abstractmethod
+ def get_port_speed_gbps(self):
+ """Return the local port speeds.
+
+ return: a list of speed in Gbps indexed by the port#
+ """