From patchwork Wed Oct 11 19:49:38 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aaron Conole X-Patchwork-Id: 732319 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 89163C41513 for ; Wed, 11 Oct 2023 19:51:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235053AbjJKTvX (ORCPT ); Wed, 11 Oct 2023 15:51:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60932 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233119AbjJKTvW (ORCPT ); Wed, 11 Oct 2023 15:51:22 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CB639C9 for ; Wed, 11 Oct 2023 12:49:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1697053787; 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=Iw1db1f9U7DoYdHPvbNT3gp9obI4+XkIvnwgO5EvR7c=; b=BBWDv44lrWVLKNZQi5h8/W3/5dJZaXXjZ7Udv3OY8RdEMKlsfVZQdMEc0rT1ziRxuWKgf8 ZwNHJveWtirvHsHnXtoPoSVNKYkYfymAiyKD7hq8QDQ9lrje3+QwW+2n7jIe6wcQ2yZntI mHu8tU4tzavVQ9MEVGpGEALNskRnqYs= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-115-7XB-f4rcMai1ZDVvhylk9A-1; Wed, 11 Oct 2023 15:49:44 -0400 X-MC-Unique: 7XB-f4rcMai1ZDVvhylk9A-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.rdu2.redhat.com [10.11.54.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id DAAD6185A79C; Wed, 11 Oct 2023 19:49:43 +0000 (UTC) Received: from RHTPC1VM0NT.lan (unknown [10.22.34.140]) by smtp.corp.redhat.com (Postfix) with ESMTP id 433551C060B5; Wed, 11 Oct 2023 19:49:42 +0000 (UTC) From: Aaron Conole To: netdev@vger.kernel.org Cc: dev@openvswitch.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, Pravin B Shelar , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Adrian Moreno , Eelco Chaudron , shuah@kernel.org Subject: [PATCH net v2 3/4] selftests: openvswitch: Skip drop testing on older kernels Date: Wed, 11 Oct 2023 15:49:38 -0400 Message-ID: <20231011194939.704565-4-aconole@redhat.com> In-Reply-To: <20231011194939.704565-1-aconole@redhat.com> References: <20231011194939.704565-1-aconole@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.7 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Kernels that don't have support for openvswitch drop reasons also won't have the drop counter reasons, so we should skip the test completely. It previously wasn't possible to build a test case for this without polluting the datapath, so we introduce a mechanism to clear all the flows from a datapath allowing us to test for explicit drop actions, and then clear the flows to build the original test case. Fixes: 4242029164d6 ("selftests: openvswitch: add explicit drop testcase") Signed-off-by: Aaron Conole --- v2: Address intermingled tabs vs. spaces .../selftests/net/openvswitch/openvswitch.sh | 17 ++++++++++ .../selftests/net/openvswitch/ovs-dpctl.py | 34 +++++++++++++++++++ 2 files changed, 51 insertions(+) diff --git a/tools/testing/selftests/net/openvswitch/openvswitch.sh b/tools/testing/selftests/net/openvswitch/openvswitch.sh index 2a0112be7ead5..f8499d4c87f3f 100755 --- a/tools/testing/selftests/net/openvswitch/openvswitch.sh +++ b/tools/testing/selftests/net/openvswitch/openvswitch.sh @@ -144,6 +144,12 @@ ovs_add_flow () { return 0 } +ovs_del_flows () { + info "Deleting all flows from DP: sbx:$1 br:$2" + ovs_sbx "$1" python3 $ovs_base/ovs-dpctl.py del-flows "$2" + return 0 +} + ovs_drop_record_and_run () { local sbx=$1 shift @@ -200,6 +206,17 @@ test_drop_reason() { ip netns exec server ip addr add 172.31.110.20/24 dev s1 ip netns exec server ip link set s1 up + # Check if drop reasons can be sent + ovs_add_flow "test_drop_reason" dropreason \ + 'in_port(1),eth(),eth_type(0x0806),arp()' 'drop(10)' 2>/dev/null + if [ $? == 1 ]; then + info "no support for drop reasons - skipping" + ovs_exit_sig + return $ksft_skip + fi + + ovs_del_flows "test_drop_reason" dropreason + # Allow ARP ovs_add_flow "test_drop_reason" dropreason \ 'in_port(1),eth(),eth_type(0x0806),arp()' '2' || return 1 diff --git a/tools/testing/selftests/net/openvswitch/ovs-dpctl.py b/tools/testing/selftests/net/openvswitch/ovs-dpctl.py index e4c24d5edf20c..10b8f31548f84 100644 --- a/tools/testing/selftests/net/openvswitch/ovs-dpctl.py +++ b/tools/testing/selftests/net/openvswitch/ovs-dpctl.py @@ -1906,6 +1906,32 @@ class OvsFlow(GenericNetlinkSocket): raise ne return reply + def del_flows(self, dpifindex): + """ + Send a del message to the kernel that will drop all flows. + + dpifindex should be a valid datapath obtained by calling + into the OvsDatapath lookup + """ + + flowmsg = OvsFlow.ovs_flow_msg() + flowmsg["cmd"] = OVS_FLOW_CMD_DEL + flowmsg["version"] = OVS_DATAPATH_VERSION + flowmsg["reserved"] = 0 + flowmsg["dpifindex"] = dpifindex + + try: + reply = self.nlm_request( + flowmsg, + msg_type=self.prid, + msg_flags=NLM_F_REQUEST | NLM_F_ACK, + ) + reply = reply[0] + except NetlinkError as ne: + print(flowmsg) + raise ne + return reply + def dump(self, dpifindex, flowspec=None): """ Returns a list of messages containing flows. @@ -2068,6 +2094,9 @@ def main(argv): addflcmd.add_argument("flow", help="Flow specification") addflcmd.add_argument("acts", help="Flow actions") + delfscmd = subparsers.add_parser("del-flows") + delfscmd.add_argument("flsbr", help="Datapath name") + args = parser.parse_args() if args.verbose > 0: @@ -2151,6 +2180,11 @@ def main(argv): flow = OvsFlow.ovs_flow_msg() flow.parse(args.flow, args.acts, rep["dpifindex"]) ovsflow.add_flow(rep["dpifindex"], flow) + elif hasattr(args, "flsbr"): + rep = ovsdp.info(args.flsbr, 0) + if rep is None: + print("DP '%s' not found." % args.flsbr) + ovsflow.del_flows(rep["dpifindex"]) return 0