1 # Copyright 2016 Cisco Systems, Inc. All rights reserved.
3 # Licensed under the Apache License, Version 2.0 (the "License"); you may
4 # not use this file except in compliance with the License. You may obtain
5 # a copy of the License at
7 # http://www.apache.org/licenses/LICENSE-2.0
9 # Unless required by applicable law or agreed to in writing, software
10 # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
11 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
12 # License for the specific language governing permissions and limitations
17 from nfvbench.log import LOG
21 class TrafficGeneratorException(Exception):
25 class AbstractTrafficGenerator(object):
26 # src_mac (6) + dst_mac (6) + mac_type (2) + frame_check (4) = 18
29 imix_l2_sizes = [64, 594, 1518]
30 imix_l3_sizes = [size - l2_header_size for size in imix_l2_sizes]
31 imix_ratios = [7, 4, 1]
33 imix_avg_l2_size = sum(
34 [1.0 * imix[0] * imix[1] for imix in zip(imix_l2_sizes, imix_ratios)]) / sum(imix_ratios)
36 traffic_utils.imix_avg_l2_sizes = imix_avg_l2_size
38 def __init__(self, config):
42 def get_version(self):
43 # Must be implemented by sub classes
48 # Must be implemented by sub classes
53 # Must be implemented by sub classes
57 def config_interface(self):
58 # Must be implemented by sub classes
62 def create_traffic(self):
63 # Must be implemented by sub classes
66 def modify_rate(self, rate, reverse):
67 port_index = int(reverse)
68 port = self.port_handle[port_index]
69 self.rates[port_index] = traffic_utils.to_rate_str(rate)
70 LOG.info('Modified traffic stream for %s, new rate=%s.', port,
71 traffic_utils.to_rate_str(rate))
73 def modify_traffic(self):
74 # Must be implemented by sub classes
79 # Must be implemented by sub classes
82 def clear_traffic(self):
83 # Must be implemented by sub classes
87 def start_traffic(self):
88 # Must be implemented by sub classes
92 def stop_traffic(self):
93 # Must be implemented by sub classes
98 # Must be implemented by sub classes