netdev - [PATCH net-next 09/13] selftests: ncdevmem: Properly reset flow steering

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Message-ID: <20240912171251.937743-10-sdf@fomichev.me>
Date: Thu, 12 Sep 2024 10:12:47 -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 09/13] selftests: ncdevmem: Properly reset flow steering

ntuple off/on might be not enough to do it on all NICs.
Add a bunch of shell crap to explicitly remove the rules.

Cc: Mina Almasry <almasrymina@...gle.com>
Signed-off-by: Stanislav Fomichev <sdf@...ichev.me>
---
 tools/testing/selftests/net/ncdevmem.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/tools/testing/selftests/net/ncdevmem.c b/tools/testing/selftests/net/ncdevmem.c
index d82e550369c0..c5b4d9069a83 100644
--- a/tools/testing/selftests/net/ncdevmem.c
+++ b/tools/testing/selftests/net/ncdevmem.c
@@ -181,13 +181,12 @@ static void print_nonzero_bytes(void *ptr, size_t size)
 
 static int reset_flow_steering(void)
 {
-	int ret = 0;
-
-	ret = run_command("sudo ethtool -K %s ntuple off >&2", ifname);
-	if (ret)
-		return ret;
-
-	return run_command("sudo ethtool -K %s ntuple on >&2", ifname);
+	run_command("sudo ethtool -K %s ntuple off >&2", ifname);
+	run_command("sudo ethtool -K %s ntuple on >&2", ifname);
+	run_command(
+		"sudo ethtool -n %s | grep 'Filter:' | awk '{print $2}' | xargs -n1 ethtool -N %s delete >&2",
+		ifname, ifname);
+	return 0;
 }
 
 static int configure_headersplit(bool on)
-- 
2.46.0