Commit 80230864 authored by Stanislav Fomichev's avatar Stanislav Fomichev Committed by Jakub Kicinski
Browse files

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: default avatarMina Almasry <almasrymina@google.com>
Signed-off-by: default avatarStanislav Fomichev <sdf@fomichev.me>
Reviewed-by: default avatarJoe Damato <jdamato@fastly.com>
Link: https://patch.msgid.link/20241107181211.3934153-13-sdf@fomichev.me


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent be43a6b2

tools/testing/selftests/drivers/net/hw/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -3,6 +3,7 @@ 
TEST_PROGS = \

	csum.py \

	devlink_port_split.py \

	devmem.py \

	ethtool.sh \

	ethtool_extended_state.sh \

	ethtool_mm.sh \

tools/testing/selftests/drivers/net/hw/devmem.py

0 → 100755
+45 −0
Original line number Diff line number Diff line 
#!/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()