From patchwork Wed May 15 05:59:29 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geliang Tang X-Patchwork-Id: 797389 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2734E3C485; Wed, 15 May 2024 06:00:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715752821; cv=none; b=KvnAzkGHxONV7eu8y6KrcOHCKGHVFjQInp4/I+gdkJbQaG0oR9lPGZDWsCwMDXRLgrDMOm+U52QNWb6FBYId0YPEpUWYd/eGZMjDS4nNCTrKWs9Yhw1F4wmFT+Sqg+lOq5dswaUO0VMzi2WrPgtatNmgVMxEozVgvBbs2NEcwqM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715752821; c=relaxed/simple; bh=9RIzon2SQFRluCkM4WuVpqfZM7QKLJta1nv2UWTfiXM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=FdIbJUDmdLFfFo+g/1yADnu8VGsmDodx2kU38OQZAgoDIoocVXMLeXWSFqvNm+4dUUhZPuqsRfkH+2sT0kF21kAaW0TAhYbmt7HQ3mIgvLhLPoQgT9RQvEnRe3wLqFcMGmNKyGCJYQuuQBAWy8inVvJ9Adwa4Z9WYzhU91y5GKs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Yp8dyDSx; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Yp8dyDSx" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 01AC9C116B1; Wed, 15 May 2024 06:00:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1715752821; bh=9RIzon2SQFRluCkM4WuVpqfZM7QKLJta1nv2UWTfiXM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Yp8dyDSxZAmuZMQXPWYut6khNpgyV5wwdXWIgiP75jpxt/TKy5TpyCsogimqq15EG pJ080tfzyksAJTVRJueixlX6DZjKEcj0vjf4LgtxYABhiFecrxQDQzAFNfLqTnO2Eg OgQkmX06E7Y5u0k1JNYZzznvltVe1nrQFe7ZVo5WWvN0zUTs2sG0VyEDSXE0knUa4X hEirg7DVFyB1mskjoZ023H+nalXMr0jWWErEh7YEzceM7OB+Qxj+DCsbBxdpe1tzjI d7V/yQrdb2As485Xg1fFw65VZe9LXy6a72RJMu1mZi/SeUsrEB1tUQJ27Tcd4yb/9a KdT8bFbbMXAvQ== From: Geliang Tang To: Andrii Nakryiko , Eduard Zingerman , Mykola Lysenko , Alexei Starovoitov , Daniel Borkmann , Martin KaFai Lau , Song Liu , Yonghong Song , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Jiri Olsa , Shuah Khan Cc: Geliang Tang , bpf@vger.kernel.org, mptcp@lists.linux.dev, linux-kselftest@vger.kernel.org, Geliang Tang Subject: [PATCH bpf-next 2/9] selftests/bpf: Use unshare_netns helper Date: Wed, 15 May 2024 13:59:29 +0800 Message-ID: X-Mailer: git-send-email 2.43.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Geliang Tang The newly added helper unshare_netns() can be used to replace unshare() and "ip link set dev lo up" in sk_assign.c, btf_skc_cls_ingress.c and tcp_custom_syncookie.c to simplify the code. Signed-off-by: Geliang Tang --- .../testing/selftests/bpf/prog_tests/btf_skc_cls_ingress.c | 6 +----- tools/testing/selftests/bpf/prog_tests/sk_assign.c | 4 +--- .../testing/selftests/bpf/prog_tests/tcp_custom_syncookie.c | 5 +---- 3 files changed, 3 insertions(+), 12 deletions(-) diff --git a/tools/testing/selftests/bpf/prog_tests/btf_skc_cls_ingress.c b/tools/testing/selftests/bpf/prog_tests/btf_skc_cls_ingress.c index ef4d6a3ae423..f697397c641e 100644 --- a/tools/testing/selftests/bpf/prog_tests/btf_skc_cls_ingress.c +++ b/tools/testing/selftests/bpf/prog_tests/btf_skc_cls_ingress.c @@ -27,15 +27,11 @@ static int prepare_netns(void) LIBBPF_OPTS(bpf_tc_opts, tc_attach, .prog_fd = bpf_program__fd(skel->progs.cls_ingress)); - if (CHECK(unshare(CLONE_NEWNET), "create netns", + if (CHECK(unshare_netns(), "create netns", "unshare(CLONE_NEWNET): %s (%d)", strerror(errno), errno)) return -1; - if (CHECK(system("ip link set dev lo up"), - "ip link set dev lo up", "failed\n")) - return -1; - qdisc_lo.ifindex = if_nametoindex("lo"); if (!ASSERT_OK(bpf_tc_hook_create(&qdisc_lo), "qdisc add dev lo clsact")) return -1; diff --git a/tools/testing/selftests/bpf/prog_tests/sk_assign.c b/tools/testing/selftests/bpf/prog_tests/sk_assign.c index 0b9bd1d6f7cc..56df5861059f 100644 --- a/tools/testing/selftests/bpf/prog_tests/sk_assign.c +++ b/tools/testing/selftests/bpf/prog_tests/sk_assign.c @@ -47,12 +47,10 @@ configure_stack(void) return false; /* Move to a new networking namespace */ - if (CHECK_FAIL(unshare(CLONE_NEWNET))) + if (CHECK_FAIL(unshare_netns())) return false; /* Configure necessary links, routes */ - if (CHECK_FAIL(system("ip link set dev lo up"))) - return false; if (CHECK_FAIL(system("ip route add local default dev lo"))) return false; if (CHECK_FAIL(system("ip -6 route add local default dev lo"))) diff --git a/tools/testing/selftests/bpf/prog_tests/tcp_custom_syncookie.c b/tools/testing/selftests/bpf/prog_tests/tcp_custom_syncookie.c index eaf441dc7e79..07817d9c039c 100644 --- a/tools/testing/selftests/bpf/prog_tests/tcp_custom_syncookie.c +++ b/tools/testing/selftests/bpf/prog_tests/tcp_custom_syncookie.c @@ -32,12 +32,9 @@ static struct test_tcp_custom_syncookie_case { static int setup_netns(void) { - if (!ASSERT_OK(unshare(CLONE_NEWNET), "create netns")) + if (!ASSERT_OK(unshare_netns(), "create netns")) return -1; - if (!ASSERT_OK(system("ip link set dev lo up"), "ip")) - goto err; - if (!ASSERT_OK(write_sysctl("/proc/sys/net/ipv4/tcp_ecn", "1"), "write_sysctl")) goto err;