From patchwork Fri Oct 30 11:16:03 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paolo Abeni X-Patchwork-Id: 11869243 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4D3CB14B2 for ; Fri, 30 Oct 2020 11:16:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 228AC20731 for ; Fri, 30 Oct 2020 11:16:57 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="bVkl2wiO" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725948AbgJ3LQl (ORCPT ); Fri, 30 Oct 2020 07:16:41 -0400 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:22626 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726394AbgJ3LQi (ORCPT ); Fri, 30 Oct 2020 07:16:38 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1604056597; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=k0gzXhHE7P+/Znh/4h5WiQrXY+vG1ikRCGJmtVHd0No=; b=bVkl2wiOPaaF30s7IXb/FXE3Fbyiy5v/hCtopI1URCNpd1G36UbaakBQH4J844lgMG1Dfd YKSNOKYyoidLfiCLZXrzOqwwBMMhK1pCYX4DscWGUrBS3tlQFCvbukF22+f0SfIo8A4skJ gcegvAcnG0g3hHaVYIf+2FZns8dSs34= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-156-ICrIW7KTN52hZYh9--nuxw-1; Fri, 30 Oct 2020 07:16:32 -0400 X-MC-Unique: ICrIW7KTN52hZYh9--nuxw-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id B4B55393B2; Fri, 30 Oct 2020 11:16:30 +0000 (UTC) Received: from gerbillo.redhat.com (ovpn-114-14.ams2.redhat.com [10.36.114.14]) by smtp.corp.redhat.com (Postfix) with ESMTP id C7C8B10027AA; Fri, 30 Oct 2020 11:16:28 +0000 (UTC) From: Paolo Abeni To: netdev@vger.kernel.org Cc: Jonathan Corbet , "David S. Miller" , Jakub Kicinski , Shuah Khan , linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org, Marcelo Tosatti Subject: [PATCH net-next v2 3/3] self-tests: introduce self-tests for RPS default mask Date: Fri, 30 Oct 2020 12:16:03 +0100 Message-Id: <7dd9925be21e8b09c73a18d05fae69914177eab4.1604055792.git.pabeni@redhat.com> In-Reply-To: References: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Ensure that RPS default mask changes take place on all newly created netns/devices and don't affect existing ones. Signed-off-by: Paolo Abeni --- tools/testing/selftests/net/Makefile | 1 + tools/testing/selftests/net/config | 3 + .../testing/selftests/net/rps_default_mask.sh | 57 +++++++++++++++++++ 3 files changed, 61 insertions(+) create mode 100755 tools/testing/selftests/net/rps_default_mask.sh diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile index ef352477cac6..2531ec3e5027 100644 --- a/tools/testing/selftests/net/Makefile +++ b/tools/testing/selftests/net/Makefile @@ -21,6 +21,7 @@ TEST_PROGS += rxtimestamp.sh TEST_PROGS += devlink_port_split.py TEST_PROGS += drop_monitor_tests.sh TEST_PROGS += vrf_route_leaking.sh +TEST_PROGS += rps_default_mask.sh TEST_PROGS_EXTENDED := in_netns.sh TEST_GEN_FILES = socket nettest TEST_GEN_FILES += psock_fanout psock_tpacket msg_zerocopy reuseport_addr_any diff --git a/tools/testing/selftests/net/config b/tools/testing/selftests/net/config index 4d5df8e1eee7..5d467364f082 100644 --- a/tools/testing/selftests/net/config +++ b/tools/testing/selftests/net/config @@ -34,3 +34,6 @@ CONFIG_TRACEPOINTS=y CONFIG_NET_DROP_MONITOR=m CONFIG_NETDEVSIM=m CONFIG_NET_FOU=m +CONFIG_RPS=y +CONFIG_SYSFS=y +CONFIG_PROC_SYSCTL=y diff --git a/tools/testing/selftests/net/rps_default_mask.sh b/tools/testing/selftests/net/rps_default_mask.sh new file mode 100755 index 000000000000..c81c0ac7ddfe --- /dev/null +++ b/tools/testing/selftests/net/rps_default_mask.sh @@ -0,0 +1,57 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 + +readonly ksft_skip=4 +readonly cpus=$(nproc) +ret=0 + +[ $cpus -gt 2 ] || exit $ksft_skip + +readonly INITIAL_RPS_DEFAULT_MASK=$(cat /proc/sys/net/core/rps_default_mask) +readonly NETNS="ns-$(mktemp -u XXXXXX)" + +setup() { + ip netns add "${NETNS}" + ip -netns "${NETNS}" link set lo up +} + +cleanup() { + echo $INITIAL_RPS_DEFAULT_MASK > /proc/sys/net/core/rps_default_mask + ip netns del $NETNS +} + +chk_rps() { + local rps_mask expected_rps_mask=$3 + local dev_name=$2 + local msg=$1 + + rps_mask=$(ip netns exec $NETNS cat /sys/class/net/$dev_name/queues/rx-0/rps_cpus) + printf "%-60s" "$msg" + if [ $rps_mask -eq $expected_rps_mask ]; then + echo "[ ok ]" + else + echo "[fail] expected $expected_rps_mask found $rps_mask" + ret=1 + fi +} + +trap cleanup EXIT + +echo 0 > /proc/sys/net/core/rps_default_mask +setup +chk_rps "empty rps_default_mask" lo 0 +cleanup + +echo 1 > /proc/sys/net/core/rps_default_mask +setup +chk_rps "non zero rps_default_mask" lo 1 + +echo 3 > /proc/sys/net/core/rps_default_mask +chk_rps "changing rps_default_mask dont affect existing netns" lo 1 + +ip -n $NETNS link add type veth +ip -n $NETNS link set dev veth0 up +ip -n $NETNS link set dev veth1 up +chk_rps "changing rps_default_mask affect newly created devices" veth0 3 +chk_rps "changing rps_default_mask affect newly created devices[II]" veth1 3 +exit $ret