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linux/tools/testing/selftests/drivers/net/hw/devmem.py
Stanislav Fomichev 80230864b7 selftests: ncdevmem: Add automated test
Only RX side for now and small message to test the setup.
In the future, we can extend it to TX side and to testing
both sides with a couple of megs of data.

  make \
  	-C tools/testing/selftests \
  	TARGETS="drivers/hw/net" \
  	install INSTALL_PATH=~/tmp/ksft

  scp ~/tmp/ksft ${HOST}:
  scp ~/tmp/ksft ${PEER}:

  cfg+="NETIF=${DEV}\n"
  cfg+="LOCAL_V6=${HOST_IP}\n"
  cfg+="REMOTE_V6=${PEER_IP}\n"
  cfg+="REMOTE_TYPE=ssh\n"
  cfg+="REMOTE_ARGS=root@${PEER}\n"

  echo -e "$cfg" | ssh root@${HOST} "cat > ksft/drivers/net/net.config"
  ssh root@${HOST} "cd ksft && ./run_kselftest.sh -t drivers/net:devmem.py"

Reviewed-by: Mina Almasry <almasrymina@google.com>
Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Reviewed-by: Joe Damato <jdamato@fastly.com>
Link: https://patch.msgid.link/20241107181211.3934153-13-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-11 17:01:05 -08:00

46 lines
1.2 KiB
Python
Executable File

#!/usr/bin/env python3
# SPDX-License-Identifier: GPL-2.0
from lib.py import ksft_run, ksft_exit
from lib.py import ksft_eq, KsftSkipEx
from lib.py import NetDrvEpEnv
from lib.py import bkg, cmd, rand_port, wait_port_listen
from lib.py import ksft_disruptive
def require_devmem(cfg):
if not hasattr(cfg, "_devmem_probed"):
port = rand_port()
probe_command = f"./ncdevmem -f {cfg.ifname}"
cfg._devmem_supported = cmd(probe_command, fail=False, shell=True).ret == 0
cfg._devmem_probed = True
if not cfg._devmem_supported:
raise KsftSkipEx("Test requires devmem support")
@ksft_disruptive
def check_rx(cfg) -> None:
cfg.require_v6()
require_devmem(cfg)
port = rand_port()
listen_cmd = f"./ncdevmem -l -f {cfg.ifname} -s {cfg.v6} -p {port}"
with bkg(listen_cmd) as socat:
wait_port_listen(port)
cmd(f"echo -e \"hello\\nworld\"| socat -u - TCP6:[{cfg.v6}]:{port}", host=cfg.remote, shell=True)
ksft_eq(socat.stdout.strip(), "hello\nworld")
def main() -> None:
with NetDrvEpEnv(__file__) as cfg:
ksft_run([check_rx],
args=(cfg, ))
ksft_exit()
if __name__ == "__main__":
main()