netdev - [PATCH net v2] selftests: hsr: Fix "File exists" errors for hsr

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Date: Wed, 22 May 2024 18:45:04 +0800
From: Geliang Tang <geliang@...nel.org>
To: "David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Shuah Khan <shuah@...nel.org>,
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
	Lukasz Majewski <lukma@...x.de>,
	Hangbin Liu <liuhangbin@...il.com>
Cc: Geliang Tang <tanggeliang@...inos.cn>,
	netdev@...r.kernel.org,
	linux-kselftest@...r.kernel.org
Subject: [PATCH net v2] selftests: hsr: Fix "File exists" errors for hsr_ping

From: Geliang Tang <tanggeliang@...inos.cn>

The hsr_ping test reports the following errors:

 INFO: preparing interfaces for HSRv0.
 INFO: Initial validation ping.
 INFO: Longer ping test.
 INFO: Cutting one link.
 INFO: Delay the link and drop a few packages.
 INFO: All good.
 INFO: preparing interfaces for HSRv1.
 RTNETLINK answers: File exists
 RTNETLINK answers: File exists
 RTNETLINK answers: File exists
 RTNETLINK answers: File exists
 RTNETLINK answers: File exists
 RTNETLINK answers: File exists
 Error: ipv4: Address already assigned.
 Error: ipv6: address already assigned.
 Error: ipv4: Address already assigned.
 Error: ipv6: address already assigned.
 Error: ipv4: Address already assigned.
 Error: ipv6: address already assigned.
 INFO: Initial validation ping.

That is because the cleanup code for the 2nd round test before
"setup_hsr_interfaces 1" is removed incorrectly in commit 680fda4f6714
("test: hsr: Remove script code already implemented in lib.sh").

This patch fixes it by re-setup the namespaces using

	setup_ns ns1 ns2 ns3

command before "setup_hsr_interfaces 1". It deletes previous namespaces
and create new ones.

Fixes: 680fda4f6714 ("test: hsr: Remove script code already implemented in lib.sh")
Reviewed-by: Hangbin Liu <liuhangbin@...il.com>
Signed-off-by: Geliang Tang <tanggeliang@...inos.cn>
---
v2:
 - re-setup the namespaces as Hangbin suggested.
---
 tools/testing/selftests/net/hsr/hsr_ping.sh | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/testing/selftests/net/hsr/hsr_ping.sh b/tools/testing/selftests/net/hsr/hsr_ping.sh
index 790294c8af83..3684b813b0f6 100755
--- a/tools/testing/selftests/net/hsr/hsr_ping.sh
+++ b/tools/testing/selftests/net/hsr/hsr_ping.sh
@@ -174,6 +174,8 @@ trap cleanup_all_ns EXIT
 setup_hsr_interfaces 0
 do_complete_ping_test

+setup_ns ns1 ns2 ns3
+
 setup_hsr_interfaces 1
 do_complete_ping_test

-- 
2.43.0