linux-kernel - [PATCH bpf-next v5 6/9] bpf: selftests: test_tunnel: Setup fresh topology for each subtest

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Message-ID: <64d0eca46fb43b089262ec96c797f56c10e494a5.1702325874.git.dxu@dxuuu.xyz>
Date:   Mon, 11 Dec 2023 13:20:10 -0700
From:   Daniel Xu <dxu@...uu.xyz>
To:     ast@...nel.org, andrii@...nel.org, shuah@...nel.org,
        daniel@...earbox.net, steffen.klassert@...unet.com,
        antony.antony@...unet.com, alexei.starovoitov@...il.com,
        yonghong.song@...ux.dev, eddyz87@...il.com, eyal.birger@...il.com
Cc:     martin.lau@...ux.dev, song@...nel.org, john.fastabend@...il.com,
        kpsingh@...nel.org, sdf@...gle.com, haoluo@...gle.com,
        jolsa@...nel.org, mykolal@...com, bpf@...r.kernel.org,
        linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org,
        devel@...ux-ipsec.org, netdev@...r.kernel.org
Subject: [PATCH bpf-next v5 6/9] bpf: selftests: test_tunnel: Setup fresh topology for each subtest

This helps with determinism b/c individual setup/teardown prevents
leaking state between different subtests.

Signed-off-by: Daniel Xu <dxu@...uu.xyz>
---
 tools/testing/selftests/bpf/prog_tests/test_tunnel.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/tools/testing/selftests/bpf/prog_tests/test_tunnel.c b/tools/testing/selftests/bpf/prog_tests/test_tunnel.c
index d149ab98798d..b57d48219d0b 100644
--- a/tools/testing/selftests/bpf/prog_tests/test_tunnel.c
+++ b/tools/testing/selftests/bpf/prog_tests/test_tunnel.c
@@ -535,23 +535,20 @@ static void test_ipip_tunnel(enum ipip_encap encap)
 #define RUN_TEST(name, ...)						\
 	({								\
 		if (test__start_subtest(#name)) {			\
+			config_device();				\
 			test_ ## name(__VA_ARGS__);			\
+			cleanup();					\
 		}							\
 	})
 
 static void *test_tunnel_run_tests(void *arg)
 {
-	cleanup();
-	config_device();
-
 	RUN_TEST(vxlan_tunnel);
 	RUN_TEST(ip6vxlan_tunnel);
 	RUN_TEST(ipip_tunnel, NONE);
 	RUN_TEST(ipip_tunnel, FOU);
 	RUN_TEST(ipip_tunnel, GUE);
 
-	cleanup();
-
 	return NULL;
 }
 
-- 
2.42.1