From: Geliang Tang <tanggeli...@kylinos.cn>

This patch uses cleanup_netns() helper in BPF tests wide to replace
close_netns() and "ip netns del", included assign_reuse.c, crypto_sanity.c,
decap_sanity.c, fib_lookup.c, ns_current_pid_tgid.c, sock_destroy.c,
sock_iter_batch.c, xdp_dev_bound_only.c and xdp_do_redirect.c. This can
simplify the code.

Signed-off-by: Geliang Tang <tanggeli...@kylinos.cn>
---
 tools/testing/selftests/bpf/prog_tests/assign_reuse.c       | 3 +--
 tools/testing/selftests/bpf/prog_tests/crypto_sanity.c      | 3 +--
 tools/testing/selftests/bpf/prog_tests/decap_sanity.c       | 6 ++----
 tools/testing/selftests/bpf/prog_tests/fib_lookup.c         | 4 +---
 .../testing/selftests/bpf/prog_tests/ns_current_pid_tgid.c  | 4 +---
 tools/testing/selftests/bpf/prog_tests/sock_destroy.c       | 4 +---
 tools/testing/selftests/bpf/prog_tests/sock_iter_batch.c    | 3 +--
 tools/testing/selftests/bpf/prog_tests/xdp_dev_bound_only.c | 3 +--
 tools/testing/selftests/bpf/prog_tests/xdp_do_redirect.c    | 4 +---
 9 files changed, 10 insertions(+), 24 deletions(-)

diff --git a/tools/testing/selftests/bpf/prog_tests/assign_reuse.c 
b/tools/testing/selftests/bpf/prog_tests/assign_reuse.c
index 21e1549d9749..6fa08c47357c 100644
--- a/tools/testing/selftests/bpf/prog_tests/assign_reuse.c
+++ b/tools/testing/selftests/bpf/prog_tests/assign_reuse.c
@@ -189,6 +189,5 @@ void test_assign_reuse(void)
                run_assign_reuse(AF_INET6, SOCK_DGRAM, "::1", PORT);
 
 cleanup:
-       close_netns(tok);
-       SYS_NOFAIL("ip netns delete %s", NS_TEST);
+       cleanup_netns(tok);
 }
diff --git a/tools/testing/selftests/bpf/prog_tests/crypto_sanity.c 
b/tools/testing/selftests/bpf/prog_tests/crypto_sanity.c
index b1a3a49a822a..ce6ceac8a812 100644
--- a/tools/testing/selftests/bpf/prog_tests/crypto_sanity.c
+++ b/tools/testing/selftests/bpf/prog_tests/crypto_sanity.c
@@ -190,8 +190,7 @@ void test_crypto_sanity(void)
        ASSERT_OK(err, "bpf_tc_detach decrypt");
 
 fail:
-       close_netns(nstoken);
+       cleanup_netns(nstoken);
        deinit_afalg();
-       SYS_NOFAIL("ip netns del " NS_TEST " &> /dev/null");
        crypto_sanity__destroy(skel);
 }
diff --git a/tools/testing/selftests/bpf/prog_tests/decap_sanity.c 
b/tools/testing/selftests/bpf/prog_tests/decap_sanity.c
index dcb9e5070cc3..9528b039ad33 100644
--- a/tools/testing/selftests/bpf/prog_tests/decap_sanity.c
+++ b/tools/testing/selftests/bpf/prog_tests/decap_sanity.c
@@ -68,10 +68,8 @@ void test_decap_sanity(void)
        ASSERT_FALSE(skel->bss->broken_csum_start, "broken_csum_start");
 
 fail:
-       if (nstoken) {
+       if (nstoken)
                bpf_tc_hook_destroy(&qdisc_hook);
-               close_netns(nstoken);
-       }
-       SYS_NOFAIL("ip netns del " NS_TEST);
+       cleanup_netns(nstoken);
        decap_sanity__destroy(skel);
 }
diff --git a/tools/testing/selftests/bpf/prog_tests/fib_lookup.c 
b/tools/testing/selftests/bpf/prog_tests/fib_lookup.c
index b7eac1fce746..9de05603098d 100644
--- a/tools/testing/selftests/bpf/prog_tests/fib_lookup.c
+++ b/tools/testing/selftests/bpf/prog_tests/fib_lookup.c
@@ -368,8 +368,6 @@ void test_fib_lookup(void)
        }
 
 fail:
-       if (nstoken)
-               close_netns(nstoken);
-       SYS_NOFAIL("ip netns del " NS_TEST);
+       cleanup_netns(nstoken);
        fib_lookup__destroy(skel);
 }
diff --git a/tools/testing/selftests/bpf/prog_tests/ns_current_pid_tgid.c 
b/tools/testing/selftests/bpf/prog_tests/ns_current_pid_tgid.c
index 6dae14d106ac..b4af39dbc449 100644
--- a/tools/testing/selftests/bpf/prog_tests/ns_current_pid_tgid.c
+++ b/tools/testing/selftests/bpf/prog_tests/ns_current_pid_tgid.c
@@ -211,9 +211,7 @@ static void test_in_netns(int (*fn)(void *), void *arg)
        test_ns_current_pid_tgid_new_ns(fn, arg);
 
 cleanup:
-       if (nstoken)
-               close_netns(nstoken);
-       SYS_NOFAIL("ip netns del ns_current_pid_tgid");
+       cleanup_netns(nstoken);
 }
 
 /* TODO: use a different tracepoint */
diff --git a/tools/testing/selftests/bpf/prog_tests/sock_destroy.c 
b/tools/testing/selftests/bpf/prog_tests/sock_destroy.c
index c156218c7280..1d3abc7a92c4 100644
--- a/tools/testing/selftests/bpf/prog_tests/sock_destroy.c
+++ b/tools/testing/selftests/bpf/prog_tests/sock_destroy.c
@@ -209,9 +209,7 @@ void test_sock_destroy(void)
        RUN_TESTS(sock_destroy_prog_fail);
 
 cleanup:
-       if (nstoken)
-               close_netns(nstoken);
-       SYS_NOFAIL("ip netns del " TEST_NS);
+       cleanup_netns(nstoken);
        if (cgroup_fd >= 0)
                close(cgroup_fd);
        sock_destroy_prog__destroy(skel);
diff --git a/tools/testing/selftests/bpf/prog_tests/sock_iter_batch.c 
b/tools/testing/selftests/bpf/prog_tests/sock_iter_batch.c
index 6a19bfdc0677..786cf316b3fd 100644
--- a/tools/testing/selftests/bpf/prog_tests/sock_iter_batch.c
+++ b/tools/testing/selftests/bpf/prog_tests/sock_iter_batch.c
@@ -126,8 +126,7 @@ void test_sock_iter_batch(void)
                do_test(SOCK_DGRAM, true);
                do_test(SOCK_DGRAM, false);
        }
-       close_netns(nstoken);
 
 done:
-       SYS_NOFAIL("ip netns del " TEST_NS);
+       cleanup_netns(nstoken);
 }
diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_dev_bound_only.c 
b/tools/testing/selftests/bpf/prog_tests/xdp_dev_bound_only.c
index 7dd18c6d06c6..315777a4c7ce 100644
--- a/tools/testing/selftests/bpf/prog_tests/xdp_dev_bound_only.c
+++ b/tools/testing/selftests/bpf/prog_tests/xdp_dev_bound_only.c
@@ -53,9 +53,8 @@ void test_xdp_dev_bound_only_offdev(void)
 out:
        close(fd1);
        close(fd2);
-       close_netns(tok);
        /* eth42 was added inside netns, removing the netns will
         * also remove eth42 veth pair.
         */
-       SYS_NOFAIL("ip netns del " LOCAL_NETNS);
+       cleanup_netns(tok);
 }
diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_do_redirect.c 
b/tools/testing/selftests/bpf/prog_tests/xdp_do_redirect.c
index 498d3bdaa4b0..7ae93bbdbf82 100644
--- a/tools/testing/selftests/bpf/prog_tests/xdp_do_redirect.c
+++ b/tools/testing/selftests/bpf/prog_tests/xdp_do_redirect.c
@@ -241,8 +241,6 @@ void test_xdp_do_redirect(void)
 out_tc:
        bpf_tc_hook_destroy(&tc_hook);
 out:
-       if (nstoken)
-               close_netns(nstoken);
-       SYS_NOFAIL("ip netns del testns");
+       cleanup_netns(nstoken);
        test_xdp_do_redirect__destroy(skel);
 }
-- 
2.43.0


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