diff mbox series

selftests: fib_tests: sleep after changing carrier. again.

Message ID 20190222102741.31173-1-cascardo@canonical.com (mailing list archive)
State Mainlined
Commit af548a27b158d548d41e56255e6eaca1658cc3be
Headers show
Series selftests: fib_tests: sleep after changing carrier. again. | expand

Commit Message

Thadeu Lima de Souza Cascardo Feb. 22, 2019, 10:27 a.m. UTC
Just like commit e2ba732a1681 ("selftests: fib_tests: sleep after
changing carrier"), wait one second to allow linkwatch to propagate the
carrier change to the stack.

There are two sets of carrier tests. The first slept after the carrier
was set to off, and when the second set ran, it was likely that the
linkwatch would be able to run again without much delay, reducing the
likelihood of a race. However, if you run 'fib_tests.sh -t carrier' on a
loop, you will quickly notice the failures.

Sleeping on the second set of tests make the failures go away.

Cc: David Ahern <dsahern@gmail.com>
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
---
 tools/testing/selftests/net/fib_tests.sh | 1 +
 1 file changed, 1 insertion(+)

Comments

David Ahern Feb. 22, 2019, 10:37 p.m. UTC | #1
On 2/22/19 5:27 AM, Thadeu Lima de Souza Cascardo wrote:
> Just like commit e2ba732a1681 ("selftests: fib_tests: sleep after
> changing carrier"), wait one second to allow linkwatch to propagate the
> carrier change to the stack.
> 
> There are two sets of carrier tests. The first slept after the carrier
> was set to off, and when the second set ran, it was likely that the
> linkwatch would be able to run again without much delay, reducing the
> likelihood of a race. However, if you run 'fib_tests.sh -t carrier' on a
> loop, you will quickly notice the failures.
> 
> Sleeping on the second set of tests make the failures go away.
> 
> Cc: David Ahern <dsahern@gmail.com>
> Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
> ---
>  tools/testing/selftests/net/fib_tests.sh | 1 +
>  1 file changed, 1 insertion(+)
> 

Reviewed-by: David Ahern <dsahern@gmail.com>
David Miller Feb. 24, 2019, 2:34 a.m. UTC | #2
From: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
Date: Fri, 22 Feb 2019 07:27:41 -0300

> Just like commit e2ba732a1681 ("selftests: fib_tests: sleep after
> changing carrier"), wait one second to allow linkwatch to propagate the
> carrier change to the stack.
> 
> There are two sets of carrier tests. The first slept after the carrier
> was set to off, and when the second set ran, it was likely that the
> linkwatch would be able to run again without much delay, reducing the
> likelihood of a race. However, if you run 'fib_tests.sh -t carrier' on a
> loop, you will quickly notice the failures.
> 
> Sleeping on the second set of tests make the failures go away.
> 
> Cc: David Ahern <dsahern@gmail.com>
> Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>

Applied, thanks.
diff mbox series

Patch

diff --git a/tools/testing/selftests/net/fib_tests.sh b/tools/testing/selftests/net/fib_tests.sh
index 802b4af18729..1080ff55a788 100755
--- a/tools/testing/selftests/net/fib_tests.sh
+++ b/tools/testing/selftests/net/fib_tests.sh
@@ -388,6 +388,7 @@  fib_carrier_unicast_test()
 
 	set -e
 	$IP link set dev dummy0 carrier off
+	sleep 1
 	set +e
 
 	echo "    Carrier down"