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

[Paolo Abeni]

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 <pab...@redhat.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