[PATCH net-next v1 1/2] selftests: drv-net: devmem: fix 5-tuple flow steering

From: Mina Almasry

Date: Sat Aug 01 2026 - 09:12:35 EST


When configuring traffic for the devmem tests, 5-tuple flow steering may
be required if the environment does not provide network namespaces.
Pass the correct remote address parameter and fall back to 5-tuple flow
steering if netns is not available.

Signed-off-by: Mina Almasry <almasrymina@xxxxxxxxxx>
---
tools/testing/selftests/drivers/net/hw/devmem_lib.py | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/drivers/net/hw/devmem_lib.py b/tools/testing/selftests/drivers/net/hw/devmem_lib.py
index 0921ff03eb81c..3ede6fd426929 100644
--- a/tools/testing/selftests/drivers/net/hw/devmem_lib.py
+++ b/tools/testing/selftests/drivers/net/hw/devmem_lib.py
@@ -111,7 +111,7 @@ def ncdevmem_tx(cfg, port, chunk_size=0):
else:
ifname = cfg.ifname
addr = cfg.remote_addr
- extras = []
+ extras = [f"-c {cfg.addr}"]

if chunk_size:
extras.append(f"-z {chunk_size}")
@@ -212,7 +212,7 @@ def run_rx_hds(cfg):
port = rand_port()

listen_cmd = ncdevmem_rx(cfg, port, verify=False,
- fail_on_linear=True)
+ fail_on_linear=True, flow_steer=not hasattr(cfg, 'netns'))
socat = socat_send(cfg, port, buf_size=size)

with bkg(listen_cmd, exit_wait=True, ns=netns) as ncdevmem:
--
2.55.0.571.g244d577d93-goog