MIRRORS/linux-yocto
1
0
Fork 0
mirror of git://git.yoctoproject.org/linux-yocto.git synced 2025-10-22 15:03:53 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity

selftests: drv-net: wait for iperf client to stop sending

Browse Source 
A few packets may still be sent out during the termination of iperf
processes. These late packets cause failures in rss_ctx.py when they
arrive on queues expected to be empty.

Example failure observed:

  Check failed 2 != 0 traffic on inactive queues (context 1):
    [0, 0, 1, 1, 386385, 397196, 0, 0, 0, 0, ...]

  Check failed 4 != 0 traffic on inactive queues (context 2):
    [0, 0, 0, 0, 2, 2, 247152, 253013, 0, 0, ...]

  Check failed 2 != 0 traffic on inactive queues (context 3):
    [0, 0, 0, 0, 0, 0, 1, 1, 282434, 283070, ...]

To avoid such failures, wait until all client sockets for the requested
port are either closed or in the TIME_WAIT state.

Fixes: 847aa551fa ("selftests: drv-net: rss_ctx: factor out send traffic and check")
Signed-off-by: Nimrod Oren <noren@nvidia.com>
Reviewed-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Carolina Jubran <cjubran@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250722122655.3194442-1-noren@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Nimrod Oren 2025-07-22 15:26:55 +03:00 committed by Jakub Kicinski
parent 14822f7827
commit 8694138250
1 changed files with 18 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
tools/testing/selftests/drivers/net/lib/py/load.py
View File

@ -1,5 +1,6 @@
# SPDX-License-Identifier: GPL-2.0
import re
import time
from lib.py import ksft_pr, cmd, ip, rand_port, wait_port_listen
@ -10,12 +11,11 @@ class GenerateTraffic:
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)
self.port = rand_port() if port is None else port
self._iperf_server = cmd(f"iperf3 -s -1 -p {self.port}", background=True)
wait_port_listen(self.port)
time.sleep(0.1)
self._iperf_client = cmd(f"iperf3 -c {env.addr} -P 16 -p {port} -t 86400",
self._iperf_client = cmd(f"iperf3 -c {env.addr} -P 16 -p {self.port} -t 86400",
background=True, host=env.remote)
# Wait for traffic to ramp up
@ -56,3 +56,16 @@ class GenerateTraffic:
ksft_pr(">> Server:")
ksft_pr(self._iperf_server.stdout)
ksft_pr(self._iperf_server.stderr)
self._wait_client_stopped()
def _wait_client_stopped(self, sleep=0.005, timeout=5):
end = time.monotonic() + timeout
live_port_pattern = re.compile(fr":{self.port:04X} 0[^6] ")
while time.monotonic() < end:
data = cmd("cat /proc/net/tcp*", host=self.env.remote).stdout
if not live_port_pattern.search(data):
return
time.sleep(sleep)
raise Exception(f"Waiting for client to stop timed out after {timeout}s")