From patchwork Wed Dec 5 09:41:46 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sasha Levin X-Patchwork-Id: 10713717 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4C39217DB for ; Wed, 5 Dec 2018 10:05:12 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3299728A89 for ; Wed, 5 Dec 2018 10:05:12 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2631828BE2; Wed, 5 Dec 2018 10:05:12 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A0FD628A89 for ; Wed, 5 Dec 2018 10:05:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728845AbeLEJnx (ORCPT ); Wed, 5 Dec 2018 04:43:53 -0500 Received: from mail.kernel.org ([198.145.29.99]:48494 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727882AbeLEJnx (ORCPT ); Wed, 5 Dec 2018 04:43:53 -0500 Received: from sasha-vm.mshome.net (unknown [213.57.143.11]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 3988C20878; Wed, 5 Dec 2018 09:43:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1544003032; bh=zduimbugKw84dodFgDaxR5P+Se0C2qoIGWxCa0dwci0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=j2rwyrUYmuWPNmJKXP3zcPf24iSkKmk3qh76MWNVqCzHMsf8H3q/8wmseRBWbOQ2J /0ochYVEJszr4vbQaEvZUxUEn3EMbvmymwCL8/PiNOoSKSGNGWqOJOaai+Lqcw2Ld1 JVGGtDgr/OAic4uYwlpB9PPkH0W6QsB00cCBFLUo= From: Sasha Levin To: stable@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Florian Westphal , Pablo Neira Ayuso , Sasha Levin , linux-kselftest@vger.kernel.org Subject: [PATCH AUTOSEL 4.14 08/69] selftests: add script to stress-test nft packet path vs. control plane Date: Wed, 5 Dec 2018 04:41:46 -0500 Message-Id: <20181205094247.6556-8-sashal@kernel.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20181205094247.6556-1-sashal@kernel.org> References: <20181205094247.6556-1-sashal@kernel.org> Sender: linux-kselftest-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Florian Westphal [ Upstream commit 25d8bcedbf4329895dbaf9dd67baa6f18dad918c ] Start flood ping for each cpu while loading/flushing rulesets to make sure we do not access already-free'd rules from nf_tables evaluation loop. Also add this to TARGETS so 'make run_tests' in selftest dir runs it automatically. This would have caught the bug fixed in previous change ("netfilter: nf_tables: do not skip inactive chains during generation update") sooner. Signed-off-by: Florian Westphal Signed-off-by: Pablo Neira Ayuso Signed-off-by: Sasha Levin --- tools/testing/selftests/Makefile | 1 + tools/testing/selftests/netfilter/Makefile | 6 ++ tools/testing/selftests/netfilter/config | 2 + .../selftests/netfilter/nft_trans_stress.sh | 78 +++++++++++++++++++ 4 files changed, 87 insertions(+) create mode 100644 tools/testing/selftests/netfilter/Makefile create mode 100644 tools/testing/selftests/netfilter/config create mode 100755 tools/testing/selftests/netfilter/nft_trans_stress.sh diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile index ea300e7818a7..10b89f5b9af7 100644 --- a/tools/testing/selftests/Makefile +++ b/tools/testing/selftests/Makefile @@ -20,6 +20,7 @@ TARGETS += memory-hotplug TARGETS += mount TARGETS += mqueue TARGETS += net +TARGETS += netfilter TARGETS += nsfs TARGETS += powerpc TARGETS += pstore diff --git a/tools/testing/selftests/netfilter/Makefile b/tools/testing/selftests/netfilter/Makefile new file mode 100644 index 000000000000..47ed6cef93fb --- /dev/null +++ b/tools/testing/selftests/netfilter/Makefile @@ -0,0 +1,6 @@ +# SPDX-License-Identifier: GPL-2.0 +# Makefile for netfilter selftests + +TEST_PROGS := nft_trans_stress.sh + +include ../lib.mk diff --git a/tools/testing/selftests/netfilter/config b/tools/testing/selftests/netfilter/config new file mode 100644 index 000000000000..1017313e41a8 --- /dev/null +++ b/tools/testing/selftests/netfilter/config @@ -0,0 +1,2 @@ +CONFIG_NET_NS=y +NF_TABLES_INET=y diff --git a/tools/testing/selftests/netfilter/nft_trans_stress.sh b/tools/testing/selftests/netfilter/nft_trans_stress.sh new file mode 100755 index 000000000000..f1affd12c4b1 --- /dev/null +++ b/tools/testing/selftests/netfilter/nft_trans_stress.sh @@ -0,0 +1,78 @@ +#!/bin/bash +# +# This test is for stress-testing the nf_tables config plane path vs. +# packet path processing: Make sure we never release rules that are +# still visible to other cpus. +# +# set -e + +# Kselftest framework requirement - SKIP code is 4. +ksft_skip=4 + +testns=testns1 +tables="foo bar baz quux" + +nft --version > /dev/null 2>&1 +if [ $? -ne 0 ];then + echo "SKIP: Could not run test without nft tool" + exit $ksft_skip +fi + +ip -Version > /dev/null 2>&1 +if [ $? -ne 0 ];then + echo "SKIP: Could not run test without ip tool" + exit $ksft_skip +fi + +tmp=$(mktemp) + +for table in $tables; do + echo add table inet "$table" >> "$tmp" + echo flush table inet "$table" >> "$tmp" + + echo "add chain inet $table INPUT { type filter hook input priority 0; }" >> "$tmp" + echo "add chain inet $table OUTPUT { type filter hook output priority 0; }" >> "$tmp" + for c in $(seq 1 400); do + chain=$(printf "chain%03u" "$c") + echo "add chain inet $table $chain" >> "$tmp" + done + + for c in $(seq 1 400); do + chain=$(printf "chain%03u" "$c") + for BASE in INPUT OUTPUT; do + echo "add rule inet $table $BASE counter jump $chain" >> "$tmp" + done + echo "add rule inet $table $chain counter return" >> "$tmp" + done +done + +ip netns add "$testns" +ip -netns "$testns" link set lo up + +lscpu | grep ^CPU\(s\): | ( read cpu cpunum ; +cpunum=$((cpunum-1)) +for i in $(seq 0 $cpunum);do + mask=$(printf 0x%x $((1<<$i))) + ip netns exec "$testns" taskset $mask ping -4 127.0.0.1 -fq > /dev/null & + ip netns exec "$testns" taskset $mask ping -6 ::1 -fq > /dev/null & +done) + +sleep 1 + +for i in $(seq 1 10) ; do ip netns exec "$testns" nft -f "$tmp" & done + +for table in $tables;do + randsleep=$((RANDOM%10)) + sleep $randsleep + ip netns exec "$testns" nft delete table inet $table 2>/dev/null +done + +randsleep=$((RANDOM%10)) +sleep $randsleep + +pkill -9 ping + +wait + +rm -f "$tmp" +ip netns del "$testns"