From patchwork Thu May 16 01:13:08 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geliang Tang X-Patchwork-Id: 13665631 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 77C4510E6; Thu, 16 May 2024 01:13:48 +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=1715822028; cv=none; b=HVYa/gv3OvcJ3Ps6dqk1UiT3HBzc3D8agN4v0oRuDdpHhZXLnlFNIYVDL955ejZp+Lpsl787RL77mYUm32lLq4d5Phaqm7SDIzfZwDsq1U9gZoKW+d7yBDmBa5kchJeHxCHXrP+Y8j5gw4mROqgGfilsJjuoR0i1BUYIIceNPkc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715822028; c=relaxed/simple; bh=9RIzon2SQFRluCkM4WuVpqfZM7QKLJta1nv2UWTfiXM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Hn17x042tzZXSOq/i/mTPlAzBkGPMbeUoiJkv7F9eUtacZMPjYI1L/E73SNymOnRMAEiciq/BzeI44kYs0yD7ntSs2Buf8dhmhqqXg59lpWJ8U0Cq4i4I5K9wn0xR9IPDn7TjwSHvaTDMpThQOpXAYcEQk95bp2uuJHccQscuzY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=fm+gUajB; 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="fm+gUajB" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7B4A3C116B1; Thu, 16 May 2024 01:13:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1715822028; bh=9RIzon2SQFRluCkM4WuVpqfZM7QKLJta1nv2UWTfiXM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fm+gUajBIrXdq1jEl+IXdn6UM+bOrpU9FP5krOj+r8eFWqku/gyisAG5FaDkTiM+e Cg2hv5CbW1WhZHB1vTLXh1r8oHUYM9gXBONzdXUP+00DjMxr24b+OzeuqApZHZV/KL +CoZ38NgyrnEALo44lZb5cwHEkk8BJDl+T1AeqXIO1INqXij/SDD6PVdI9F4zzGRw8 E0/7PmRR52kFRTWzki8UTn3DpmvDkqc695sB5+fFtejZzoj2P1ppU8d0HjV2uGXtN3 SI6JyhmnILhdpWiOCkgrdjhzQfIlFSB1KzZExQwXFvI2dO5NFtw3VQkZDXNHxPprYd eOJjHwgeWTu2w== 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 Subject: [PATCH bpf-next v2 2/8] selftests/bpf: Use unshare_netns helper Date: Thu, 16 May 2024 09:13:08 +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;