netdev - [PATCH net-next] selftests: net: ignore timing errors in txtimestamp if KSFT_MACHINE

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Date: Thu,  8 Feb 2024 18:57:49 +0100
From: Paolo Abeni <pabeni@...hat.com>
To: netdev@...r.kernel.org
Cc: "David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Shuah Khan <shuah@...nel.org>,
	linux-kselftest@...r.kernel.org
Subject: [PATCH net-next] selftests: net: ignore timing errors in txtimestamp if KSFT_MACHINE_SLOW

This test is time sensitive. It may fail on virtual machines and for
debug builds.

Similar to commit c41dfb0dfbec ("selftests/net: ignore timing errors in
so_txtime if KSFT_MACHINE_SLOW"), optionally suppress failure for timing
errors (only).

Signed-off-by: Paolo Abeni <pabeni@...hat.com>
---
 tools/testing/selftests/net/txtimestamp.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/net/txtimestamp.c b/tools/testing/selftests/net/txtimestamp.c
index 10f2fde3686b..ec60a16c9307 100644
--- a/tools/testing/selftests/net/txtimestamp.c
+++ b/tools/testing/selftests/net/txtimestamp.c
@@ -163,7 +163,8 @@ static void validate_timestamp(struct timespec *cur, int min_delay)
 	if (cur64 < start64 + min_delay || cur64 > start64 + max_delay) {
 		fprintf(stderr, "ERROR: %" PRId64 " us expected between %d and %d\n",
 				cur64 - start64, min_delay, max_delay);
-		test_failed = true;
+		if (!getenv("KSFT_MACHINE_SLOW"))
+			test_failed = true;
 	}
 }
 
-- 
2.43.0