netdev - [PATCH net-next 13/13] selftests: ncdevmem: Add automated test

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20240912171251.937743-14-sdf@fomichev.me>
Date: Thu, 12 Sep 2024 10:12:51 -0700
From: Stanislav Fomichev <sdf@...ichev.me>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	Mina Almasry <almasrymina@...gle.com>
Subject: [PATCH net-next 13/13] 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/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@...EER}\n"

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

Cc: Mina Almasry <almasrymina@...gle.com>
Signed-off-by: Stanislav Fomichev <sdf@...ichev.me>
---
 tools/testing/selftests/drivers/net/Makefile  |  1 +
 tools/testing/selftests/drivers/net/devmem.py | 46 +++++++++++++++++++
 2 files changed, 47 insertions(+)
 create mode 100755 tools/testing/selftests/drivers/net/devmem.py

diff --git a/tools/testing/selftests/drivers/net/Makefile b/tools/testing/selftests/drivers/net/Makefile
index bb8f7374942e..00da59970a76 100644
--- a/tools/testing/selftests/drivers/net/Makefile
+++ b/tools/testing/selftests/drivers/net/Makefile
@@ -5,6 +5,7 @@ TEST_INCLUDES := $(wildcard lib/py/*.py) \
 		 ../../net/lib.sh \
 
 TEST_PROGS := \
+	devmem.py \
 	netcons_basic.sh \
 	ping.py \
 	queues.py \
diff --git a/tools/testing/selftests/drivers/net/devmem.py b/tools/testing/selftests/drivers/net/devmem.py
new file mode 100755
index 000000000000..bbd32e0b0fe2
--- /dev/null
+++ b/tools/testing/selftests/drivers/net/devmem.py
@@ -0,0 +1,46 @@
+#!/usr/bin/env python3
+# SPDX-License-Identifier: GPL-2.0
+
+import errno
+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 -P -f {cfg.ifname} -s {cfg.v6} -p {port}"
+        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")
+
+
+@...t_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 nc:
+        wait_port_listen(port)
+        cmd(f"echo -e \"hello\\nworld\"| nc {cfg.v6} {port}", host=cfg.remote, shell=True)
+
+    ksft_eq(nc.stdout.strip(), "hello\nworld")
+
+
+def main() -> None:
+    with NetDrvEpEnv(__file__) as cfg:
+        ksft_run([check_rx],
+                 args=(cfg, ))
+    ksft_exit()
+
+
+if __name__ == "__main__":
+    main()
-- 
2.46.0