77 lines
2.8 KiB
Python
77 lines
2.8 KiB
Python
|
# SPDX-License-Identifier: GPL-2.0
|
||
|
|
|
||
|
|
import time
|
||
|
|
|
||
|
|
from lib.py import ksft_pr, cmd, ip, rand_port, wait_port_listen, bkg
|
||
|
|
|
||
|
|
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
|
||
|
|
if not self._wait_pkts(pps=1000):
|
||
|
|
self.stop(verbose=True)
|
||
|
|
raise Exception("iperf3 traffic did not ramp up")
|
||
|
|
|
||
|
|
def run_remote_test(self, env: object, port=None, command=None):
|
||
|
|
if port is None:
|
||
|
|
port = rand_port()
|
||
|
|
try:
|
||
|
|
server_cmd = f"iperf3 -s 1 -p {port} --one-off"
|
||
|
|
with bkg(server_cmd, host=env.remote):
|
||
|
|
#iperf3 opens TCP connection as default in server
|
||
|
|
#-u to be specified in client command for UDP
|
||
|
|
wait_port_listen(port, host=env.remote)
|
||
|
|
except Exception as e:
|
||
|
|
raise Exception(f"Unexpected error occurred while running server command: {e}")
|
||
|
|
try:
|
||
|
|
client_cmd = f"iperf3 -c {env.remote_addr} -p {port} {command}"
|
||
|
|
proc = cmd(client_cmd)
|
||
|
|
return proc
|
||
|
|
except Exception as e:
|
||
|
|
raise Exception(f"Unexpected error occurred while running client command: {e}")
|
||
|
|
|
||
|
|
def _wait_pkts(self, pkt_cnt=None, pps=None):
|
||
|
|
"""
|
||
|
|
Wait until we've seen pkt_cnt or until traffic ramps up to pps.
|
||
|
|
Only one of pkt_cnt or pss can be specified.
|
||
|
|
"""
|
||
|
|
pkt_start = ip("-s link show dev " + self.env.ifname, json=True)[0]["stats64"]["rx"]["packets"]
|
||
|
|
for _ in range(50):
|
||
|
|
time.sleep(0.1)
|
||
|
|
pkt_now = ip("-s link show dev " + self.env.ifname, json=True)[0]["stats64"]["rx"]["packets"]
|
||
|
|
if pps:
|
||
|
|
if pkt_now - pkt_start > pps / 10:
|
||
|
|
return True
|
||
|
|
pkt_start = pkt_now
|
||
|
|
elif pkt_cnt:
|
||
|
|
if pkt_now - pkt_start > pkt_cnt:
|
||
|
|
return True
|
||
|
|
return False
|
||
|
|
|
||
|
|
def wait_pkts_and_stop(self, pkt_cnt):
|
||
|
|
failed = not self._wait_pkts(pkt_cnt=pkt_cnt)
|
||
|
|
self.stop(verbose=failed)
|
||
|
|
|
||
|
|
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)
|