Re: [PATCH net-next v2 4/4] selftests: drv-net: Test that NAPI ID is non-zero

On Thu, Apr 17, 2025 at 9:33 AM Joe Damato jdamato@fastly.com wrote:

[...]

diff --git a/tools/testing/selftests/drivers/net/napi_id.py b/tools/testing/selftests/drivers/net/napi_id.py new file mode 100755 index 000000000000..aee6f90be49b --- /dev/null +++ b/tools/testing/selftests/drivers/net/napi_id.py @@ -0,0 +1,24 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0

+from lib.py import ksft_run, ksft_exit +from lib.py import ksft_eq, NetDrvEpEnv +from lib.py import bkg, cmd, rand_port, NetNSEnter

+def test_napi_id(cfg) -> None:

• port = rand_port()
• listen_cmd = f'{cfg.test_dir / "napi_id_helper"} {cfg.addr_v['4']} {port}'
• with bkg(listen_cmd, ksft_wait=3) as server:

•    with NetNSEnter('net', '/proc/self/ns/'):
  

•      cmd(f"echo a | socat - TCP:{cfg.addr_v['4']}:{port}", host=cfg.remote, shell=True)
  

There's no need to reenter /proc/self/ns/net. And I think passing `host=cfg.remote` should be sufficient to run the command in the other netns.