From patchwork Wed Oct 16 18:35:23 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Alexis_Lothor=C3=A9_=28eBPF_Foundation=29?= X-Patchwork-Id: 13838712 Received: from relay6-d.mail.gandi.net (relay6-d.mail.gandi.net [217.70.183.198]) (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 C66CC18C33E; Wed, 16 Oct 2024 18:35:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.198 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729103751; cv=none; b=obRH5sS942HldLo83wV6a9/oQ81zxqLfR1iNlCabtS+tyB4krX4gL0skIgm/aPLvrkL2wiiGzebrKhcsgKPAXg78kwiMP2E9DArq0xmRr1DQ6W7K4eoNSe21fVfbsvzzawMCJlN+akHlh4/fN7Gz19m+zWaXo8+TCU6lmhNei+g= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729103751; c=relaxed/simple; bh=VJuIl+avj3mIVVRSplXNtVjEq/MYsFRwopirnjoJCbM=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=G186VQsrO4FUTUwUaWGOgVdVTSqnBk2a1EKXWv/N8w8/EoQqEUP1RgP9yYCPP4XuvQCoTKKpqv2OG/iL7wZ5WYE9tYNdPtu/pufjbtjTXlDkPniS+igK5fakF6WrTBH4VCa2m0X3i6P942/cpq1UTYt0dUUJHM1fJp0t7y0exdk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=MhxcGZwi; arc=none smtp.client-ip=217.70.183.198 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="MhxcGZwi" Received: by mail.gandi.net (Postfix) with ESMTPSA id DF3A8C0006; Wed, 16 Oct 2024 18:35:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1729103747; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=zOXwSc5wYAokVZg2BYBKgISgzuQIRqta0EKOkbceqLY=; b=MhxcGZwi5dxAO1w6rYLLbXgYiC/sIhB8xXuuiZQeLnWwz+C8Qm5XfRxl26svbID0g0b8Zt OYfCbgw+WDedLx8CmnZMHtCWmLp/7cz/Bpkf95W42ZZuJe+u7Esz4GREg3QyJ1SRtJ7Nlv dYnvAvgpxlePFNlLjn+d5KDaQ64xXPgWj/yEijimuUwywxLZvO88pBrUGNFBKIp+D/KfHq LdM3MeHLu6eAB9n8+o1R0mvPGiGGOLKc0CRhkOwidEiYQbrZQ++YCfbXckhVCSVVfunxTH TZDaC1nKu2W/V8td2hBWqJrPFyYpqR82GHkitrgmIaCyovKlf+E2MDz5D7UN4g== From: =?utf-8?q?Alexis_Lothor=C3=A9_=28eBPF_Foundation=29?= Date: Wed, 16 Oct 2024 20:35:23 +0200 Subject: [PATCH bpf-next 2/6] selftests/bpf: add missing ns cleanups in btf_skc_cls_ingress Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20241016-syncookie-v1-2-3b7a0de12153@bootlin.com> References: <20241016-syncookie-v1-0-3b7a0de12153@bootlin.com> In-Reply-To: <20241016-syncookie-v1-0-3b7a0de12153@bootlin.com> To: Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Eduard Zingerman , Song Liu , Yonghong Song , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Jiri Olsa , Mykola Lysenko , Shuah Khan , "David S. Miller" , Jakub Kicinski , Jesper Dangaard Brouer Cc: ebpf@linuxfoundation.org, Thomas Petazzoni , Lorenz Bauer , bpf@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, =?utf-8?q?Alexis_Lothor=C3=A9_=28eBPF_Foundation?= =?utf-8?q?=29?= X-Mailer: b4 0.14.2 X-GND-Sasl: alexis.lothore@bootlin.com btf_skc_cls_ingress.c currently runs two subtests, and create a dedicated network namespace for each, but never cleans up the created namespace once the test has ended. Add missing namespace cleanup after each namespace to avoid accumulating namespaces for each new subtest. While at it, switch namespace management to netns_{new,free} Signed-off-by: Alexis Lothoré (eBPF Foundation) --- .../selftests/bpf/prog_tests/btf_skc_cls_ingress.c | 31 ++++++++++++++-------- 1 file changed, 20 insertions(+), 11 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 5d8d7736edc095b647ca3fbc12cac0440b60140e..8d1fa8806cdda088d264b44104f7c80726b025e2 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 @@ -17,32 +17,34 @@ #include "test_progs.h" #include "test_btf_skc_cls_ingress.skel.h" +#define TEST_NS "skc_cls_ingress" + static struct test_btf_skc_cls_ingress *skel; static struct sockaddr_in6 srv_sa6; static __u32 duration; -static int prepare_netns(void) +static struct netns_obj *prepare_netns(void) { LIBBPF_OPTS(bpf_tc_hook, qdisc_lo, .attach_point = BPF_TC_INGRESS); LIBBPF_OPTS(bpf_tc_opts, tc_attach, .prog_fd = bpf_program__fd(skel->progs.cls_ingress)); + struct netns_obj *ns = NULL; - if (CHECK(unshare(CLONE_NEWNET), "create netns", - "unshare(CLONE_NEWNET): %s (%d)", - strerror(errno), errno)) - return -1; + ns = netns_new(TEST_NS, true); + if (!ASSERT_OK_PTR(ns, "create and join netns")) + return ns; if (CHECK(system("ip link set dev lo up"), "ip link set dev lo up", "failed\n")) - return -1; + goto free_ns; qdisc_lo.ifindex = if_nametoindex("lo"); if (!ASSERT_OK(bpf_tc_hook_create(&qdisc_lo), "qdisc add dev lo clsact")) - return -1; + goto free_ns; if (!ASSERT_OK(bpf_tc_attach(&qdisc_lo, &tc_attach), "filter add dev lo ingress")) - return -1; + goto free_ns; /* Ensure 20 bytes options (i.e. in total 40 bytes tcp header) for the * bpf_tcp_gen_syncookie() helper. @@ -50,9 +52,13 @@ static int prepare_netns(void) if (write_sysctl("/proc/sys/net/ipv4/tcp_window_scaling", "1") || write_sysctl("/proc/sys/net/ipv4/tcp_timestamps", "1") || write_sysctl("/proc/sys/net/ipv4/tcp_sack", "1")) - return -1; + goto free_ns; + + return ns; - return 0; +free_ns: + netns_free(ns); + return NULL; } static void reset_test(void) @@ -169,6 +175,7 @@ void test_btf_skc_cls_ingress(void) int i; skel = test_btf_skc_cls_ingress__open_and_load(); + struct netns_obj *ns; if (CHECK(!skel, "test_btf_skc_cls_ingress__open_and_load", "failed\n")) return; @@ -176,13 +183,15 @@ void test_btf_skc_cls_ingress(void) if (!test__start_subtest(tests[i].desc)) continue; - if (prepare_netns()) + ns = prepare_netns(); + if (!ns) break; tests[i].run(); print_err_line(); reset_test(); + netns_free(ns); } test_btf_skc_cls_ingress__destroy(skel);