43 lines
1.4 KiB
Python
43 lines
1.4 KiB
Python
# SPDX-License-Identifier: GPL-2.0
|
|
|
|
import time
|
|
|
|
from lib.py import ksft_pr, cmd, ip, rand_port, wait_port_listen
|
|
|
|
class GenerateTraffic:
|
|
def __init__(self, env, port=None):
|
|
env.require_cmd("iperf3", remote=True)
|
|
|
|
self.env = env
|
|
|
|
if port is None:
|
|
port = rand_port()
|
|
self._iperf_server = cmd(f"iperf3 -s -1 -p {port}", background=True)
|
|
wait_port_listen(port)
|
|
time.sleep(0.1)
|
|
self._iperf_client = cmd(f"iperf3 -c {env.addr} -P 16 -p {port} -t 86400",
|
|
background=True, host=env.remote)
|
|
|
|
# Wait for traffic to ramp up
|
|
pkt = ip("-s link show dev " + env.ifname, json=True)[0]["stats64"]["rx"]["packets"]
|
|
for _ in range(50):
|
|
time.sleep(0.1)
|
|
now = ip("-s link show dev " + env.ifname, json=True)[0]["stats64"]["rx"]["packets"]
|
|
if now - pkt > 1000:
|
|
return
|
|
pkt = now
|
|
self.stop(verbose=True)
|
|
raise Exception("iperf3 traffic did not ramp up")
|
|
|
|
def stop(self, verbose=None):
|
|
self._iperf_client.process(terminate=True)
|
|
if verbose:
|
|
ksft_pr(">> Client:")
|
|
ksft_pr(self._iperf_client.stdout)
|
|
ksft_pr(self._iperf_client.stderr)
|
|
self._iperf_server.process(terminate=True)
|
|
if verbose:
|
|
ksft_pr(">> Server:")
|
|
ksft_pr(self._iperf_server.stdout)
|
|
ksft_pr(self._iperf_server.stderr)
|