From patchwork Mon Aug 2 20:49:47 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peilin Ye X-Patchwork-Id: 12414743 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 290E2C4338F for ; Mon, 2 Aug 2021 20:50:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EEA6760F4B for ; Mon, 2 Aug 2021 20:50:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231516AbhHBUub (ORCPT ); Mon, 2 Aug 2021 16:50:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59746 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231194AbhHBUu2 (ORCPT ); Mon, 2 Aug 2021 16:50:28 -0400 Received: from mail-qt1-x82a.google.com (mail-qt1-x82a.google.com [IPv6:2607:f8b0:4864:20::82a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3E7ECC06175F; Mon, 2 Aug 2021 13:50:17 -0700 (PDT) Received: by mail-qt1-x82a.google.com with SMTP id a12so12596421qtb.2; Mon, 02 Aug 2021 13:50:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=8WYVXOVWiAw8d7j2eGAl0yg+RDALNOfe7GgbVDGVAc4=; b=VnjAFAemJq7ihtDJ7NxlEU7/0xTvyvRt2v2vVf/fRGgKpYUIFXR0YzO9miMP9XAN2N 1PAJg4Eh5bHGmtcC1QdvonNV3RXDCPPXrntjzmuwBx7LY6Re47tBJ890i1nKDAzcMu5o spBndUfPh5E1bqKQD9xUdlS4ZC0qWf8+RUZgm+kmnxRfxUPOF/GiNbA5QTBT/yV6IfbJ jFEp3XbARn6lBKzqiXeSV7mWJF+9TLqfRIc0AdYzp0MDQUHJcfO95frK2iyU9fEzTyNZ vPDUmMG6JY6Mkx636hUiJoT7wCmtt8nF1qvTK5shXGd9YJVzQxBIAG/BmCm1MgFlHN5N 8YCw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=8WYVXOVWiAw8d7j2eGAl0yg+RDALNOfe7GgbVDGVAc4=; b=OCfQOTOW7qzzlXbC+37WoCWy03IECvA41zxGQP30Ftb3M5aH3UYSACxDlPoZaPPH5r up+Gh4ho2qmvX5rQen1zVYALj6T+U+R8rOhlm7OoQPEs+frNYGmn0m9I+dtf1AM12OtD 8wf6IB8N9omtuLWijZwA2ZlPR4F4MI+bE6ntcpUvQwhU2qABTgIXLIsULaahbbQv+a/v Q1LyTE3v0uvzcKyh1YwRNSs6SIZaBTLYe2vEWaB2q+ZIvmJsmmjhK4RySGFyyy+SRrkW 07ydtxIUDTJaUJag52PkbqRzUvdRNDwvtcxTsKlVpjOEDN8FlU13fLI9DLnRX/FBu4nN byIQ== X-Gm-Message-State: AOAM533Aa1u4UOo5IHn2ineSgaGromiIcgiUjI8/Ff1MJIPHPWzvIvCF fR+q+hGK15JegBIaH7vH6Q== X-Google-Smtp-Source: ABdhPJyYmgAdgsomZUjQ8CQeLqiUjImJD46X2QTAAnsDu9RhWHw75i2rFDENdYTzO1sz9J/1157ohQ== X-Received: by 2002:ac8:66ca:: with SMTP id m10mr15318804qtp.171.1627937416360; Mon, 02 Aug 2021 13:50:16 -0700 (PDT) Received: from bytedance.attlocal.net (ec2-13-57-97-131.us-west-1.compute.amazonaws.com. [13.57.97.131]) by smtp.gmail.com with ESMTPSA id q11sm6374623qkm.56.2021.08.02.13.50.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 02 Aug 2021 13:50:15 -0700 (PDT) From: Peilin Ye To: Jamal Hadi Salim , Cong Wang , Jiri Pirko , "David S. Miller" , Jakub Kicinski , netdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Daniel Borkmann , Cong Wang , Peilin Ye , Peilin Ye Subject: [PATCH net-next 1/2] net/sched: sch_ingress: Support clsact egress mini-Qdisc option Date: Mon, 2 Aug 2021 13:49:47 -0700 Message-Id: <1931ca440b47344fe357d5438aeab4b439943d10.1627936393.git.peilin.ye@bytedance.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Peilin Ye If the ingress Qdisc is in use, currently it is not possible to add another clsact egress mini-Qdisc to the same device without taking down the ingress Qdisc, since both sch_ingress and sch_clsact use the same handle (0xFFFF0000). Add a "change" option for sch_ingress, so that users can enable or disable a clsact egress mini-Qdisc, without suffering from downtime: $ tc qdisc add dev eth0 ingress $ tc qdisc change dev eth0 ingress clsact-on Then users can add filters to the egress mini-Qdisc as usual: $ tc filter add dev eth0 egress protocol ip prio 10 \ matchall action skbmod swap mac Deleting the ingress Qdisc removes the egress mini-Qdisc as well. To remove egress mini-Qdisc only, use: $ tc qdisc change dev eth0 ingress clsact-off Finally, if the egress mini-Qdisc is enabled, the "show" command will print out a "clsact" flag to indicate it: $ tc qdisc show ingress qdisc ingress ffff: dev eth0 parent ffff:fff1 ---------------- $ tc qdisc change dev eth0 ingress clsact-on $ tc qdisc show ingress qdisc ingress ffff: dev eth0 parent ffff:fff1 ---------------- clsact Reviewed-by: Cong Wang Signed-off-by: Peilin Ye --- include/uapi/linux/pkt_sched.h | 12 +++++ net/sched/sch_ingress.c | 92 ++++++++++++++++++++++++++++++++++ 2 files changed, 104 insertions(+) diff --git a/include/uapi/linux/pkt_sched.h b/include/uapi/linux/pkt_sched.h index 79a699f106b1..cb0eb5dd848a 100644 --- a/include/uapi/linux/pkt_sched.h +++ b/include/uapi/linux/pkt_sched.h @@ -586,6 +586,18 @@ enum { #define TCA_ATM_MAX (__TCA_ATM_MAX - 1) +/* INGRESS section */ + +enum { + TCA_INGRESS_UNSPEC, + TCA_INGRESS_FLAGS, +#define TC_INGRESS_CLSACT _BITUL(0) /* enable clsact egress mini-Qdisc */ +#define TC_INGRESS_SUPPORTED_FLAGS TC_INGRESS_CLSACT + __TCA_INGRESS_MAX, +}; + +#define TCA_INGRESS_MAX (__TCA_INGRESS_MAX - 1) + /* Network emulator */ enum { diff --git a/net/sched/sch_ingress.c b/net/sched/sch_ingress.c index 84838128b9c5..96e00e9e727b 100644 --- a/net/sched/sch_ingress.c +++ b/net/sched/sch_ingress.c @@ -16,8 +16,12 @@ struct ingress_sched_data { struct tcf_block *block; + struct tcf_block *egress_block; struct tcf_block_ext_info block_info; + struct tcf_block_ext_info egress_block_info; struct mini_Qdisc_pair miniqp; + struct mini_Qdisc_pair miniqp_egress; + bool clsact; }; static struct Qdisc *ingress_leaf(struct Qdisc *sch, unsigned long arg) @@ -27,6 +31,11 @@ static struct Qdisc *ingress_leaf(struct Qdisc *sch, unsigned long arg) static unsigned long ingress_find(struct Qdisc *sch, u32 classid) { + struct ingress_sched_data *q = qdisc_priv(sch); + + if (q->clsact && TC_H_MIN(classid) == TC_H_MIN(TC_H_MIN_EGRESS)) + return TC_H_MIN(TC_H_MIN_EGRESS); + return TC_H_MIN(classid) + 1; } @@ -49,6 +58,9 @@ static struct tcf_block *ingress_tcf_block(struct Qdisc *sch, unsigned long cl, { struct ingress_sched_data *q = qdisc_priv(sch); + if (q->clsact && cl == TC_H_MIN(TC_H_MIN_EGRESS)) + return q->egress_block; + return q->block; } @@ -66,6 +78,14 @@ static void ingress_ingress_block_set(struct Qdisc *sch, u32 block_index) q->block_info.block_index = block_index; } +static void ingress_egress_block_set(struct Qdisc *sch, u32 block_index) +{ + struct ingress_sched_data *q = qdisc_priv(sch); + + if (q->clsact) + q->egress_block_info.block_index = block_index; +} + static u32 ingress_ingress_block_get(struct Qdisc *sch) { struct ingress_sched_data *q = qdisc_priv(sch); @@ -73,6 +93,13 @@ static u32 ingress_ingress_block_get(struct Qdisc *sch) return q->block_info.block_index; } +static u32 ingress_egress_block_get(struct Qdisc *sch) +{ + struct ingress_sched_data *q = qdisc_priv(sch); + + return q->clsact ? q->egress_block_info.block_index : 0; +} + static int ingress_init(struct Qdisc *sch, struct nlattr *opt, struct netlink_ext_ack *extack) { @@ -103,16 +130,78 @@ static void ingress_destroy(struct Qdisc *sch) tcf_block_put_ext(q->block, sch, &q->block_info); net_dec_ingress_queue(); + + if (q->clsact) { + tcf_block_put_ext(q->egress_block, sch, &q->egress_block_info); + net_dec_egress_queue(); + } +} + +static const struct nla_policy ingress_policy[TCA_INGRESS_MAX + 1] = { + [TCA_INGRESS_FLAGS] = NLA_POLICY_BITFIELD32(TC_INGRESS_SUPPORTED_FLAGS), +}; + +static int ingress_change(struct Qdisc *sch, struct nlattr *arg, struct netlink_ext_ack *extack) +{ + struct ingress_sched_data *q = qdisc_priv(sch); + struct net_device *dev = qdisc_dev(sch); + struct nlattr *tb[TCA_INGRESS_MAX + 1]; + struct nla_bitfield32 flags; + int err; + + err = nla_parse_nested_deprecated(tb, TCA_INGRESS_MAX, arg, ingress_policy, extack); + if (err < 0) + return err; + + if (!tb[TCA_INGRESS_FLAGS]) + return -EINVAL; + + flags = nla_get_bitfield32(tb[TCA_INGRESS_FLAGS]); + + if (flags.value & TC_INGRESS_CLSACT) { + if (q->clsact) + return -EEXIST; + + /* enable clsact egress mini-Qdisc */ + mini_qdisc_pair_init(&q->miniqp_egress, sch, &dev->miniq_egress); + + q->egress_block_info.binder_type = FLOW_BLOCK_BINDER_TYPE_CLSACT_EGRESS; + q->egress_block_info.chain_head_change = clsact_chain_head_change; + q->egress_block_info.chain_head_change_priv = &q->miniqp_egress; + + err = tcf_block_get_ext(&q->egress_block, sch, &q->egress_block_info, extack); + if (err) + return err; + + net_inc_egress_queue(); + q->clsact = true; + } else { + if (!q->clsact) + return -ENOENT; + + /* disable clsact egress mini-Qdisc */ + tcf_block_put_ext(q->egress_block, sch, &q->egress_block_info); + + net_dec_egress_queue(); + q->clsact = false; + } + + return 0; } static int ingress_dump(struct Qdisc *sch, struct sk_buff *skb) { + struct ingress_sched_data *q = qdisc_priv(sch); struct nlattr *nest; nest = nla_nest_start_noflag(skb, TCA_OPTIONS); if (nest == NULL) goto nla_put_failure; + if (nla_put_bitfield32(skb, TCA_INGRESS_FLAGS, q->clsact ? TC_INGRESS_CLSACT : 0, + TC_INGRESS_SUPPORTED_FLAGS)) + goto nla_put_failure; + return nla_nest_end(skb, nest); nla_put_failure: @@ -137,9 +226,12 @@ static struct Qdisc_ops ingress_qdisc_ops __read_mostly = { .static_flags = TCQ_F_CPUSTATS, .init = ingress_init, .destroy = ingress_destroy, + .change = ingress_change, .dump = ingress_dump, .ingress_block_set = ingress_ingress_block_set, + .egress_block_set = ingress_egress_block_set, .ingress_block_get = ingress_ingress_block_get, + .egress_block_get = ingress_egress_block_get, .owner = THIS_MODULE, }; From patchwork Mon Aug 2 20:50:36 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peilin Ye X-Patchwork-Id: 12414745 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 695FCC432BE for ; Mon, 2 Aug 2021 20:51:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4680560E97 for ; Mon, 2 Aug 2021 20:51:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232182AbhHBUvJ (ORCPT ); Mon, 2 Aug 2021 16:51:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59936 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231433AbhHBUvI (ORCPT ); Mon, 2 Aug 2021 16:51:08 -0400 Received: from mail-qt1-x82e.google.com (mail-qt1-x82e.google.com [IPv6:2607:f8b0:4864:20::82e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2B0F9C06175F; Mon, 2 Aug 2021 13:50:58 -0700 (PDT) Received: by mail-qt1-x82e.google.com with SMTP id w10so12598004qtj.3; Mon, 02 Aug 2021 13:50:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=cI3bAw8ypmiDHJdkJBXoE/YVWFtSuOmaJtoMVmodDns=; b=df+Nxs07hhZVldp5Si0NYQLfbLRt8i7Mw869Pdb/LIBoaZNpqGq8RZMVNst6CzxuXJ JPslwzdvx9RBZrHA8dcACcLvLu9/RpRXy2b+JIqBirQvw1vD2WWAZV4bDqyndC/qtLMK dCgPmROybIJ8/5fX5kT1JwdMdj4yXELSJbs1Kdv+TBw+3x8M5ZtFrYVLIuccrRTYzT6e wY3v0CTGnblF3pSsusQGAhXzqb2UwEatgSOY5S0q68UAf7nLoAFMXEW7RUTYA4GnW44F vcRcmp6ZX9ljfSSuFzcaNl+MR+eiS8vwyGUyD2z9QV+SLJChADH6sdl//hA81A1VNSu9 kchA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=cI3bAw8ypmiDHJdkJBXoE/YVWFtSuOmaJtoMVmodDns=; b=ISWqBeC8QDlGTSPpQXK5U5ie//fD9g4jfbAnoRUeESguXvAm6acI3Gfy25gqR6VpRy aG75DRFLSowMehE41TfX+wYiSdOnXXTBVbf+IF7dKns5q8u3bADkzDoQlpO+71bIgp4Y cK4uQMkdWC1ZWcUlNXIWgEtCIUCVLt7M3lHJQZmeZRZDnD+D9cqDHb4FbojuVy5nekbH QJbAxsyuww4yS+/2WcMqPkPBrj5Av7lVTojLR43KngsCiK869y1RcuSt5T822tVXfeND AlpBDhGM8zU6nNplHhwAEMz1QcH1AasClaIPm/PcFtdEr+aU9nLusIoeExmLlz9by8XH SYcg== X-Gm-Message-State: AOAM531wz/KWBBb34ThsiMNn8ZbnQzQSt+j411AbnIgsJ+UMp2tct1xc h7bqDcHyaIai3j7wnfcfjg== X-Google-Smtp-Source: ABdhPJzTB7qbhI8W9WNQjiD8aM6UxJAT1AHXEltCXm7G9PSLr8Y4uZ8p0UFPfAtH0h0pG4HpimknGg== X-Received: by 2002:ac8:7e86:: with SMTP id w6mr16025808qtj.194.1627937457370; Mon, 02 Aug 2021 13:50:57 -0700 (PDT) Received: from bytedance.attlocal.net (ec2-13-57-97-131.us-west-1.compute.amazonaws.com. [13.57.97.131]) by smtp.gmail.com with ESMTPSA id f12sm6570944qke.37.2021.08.02.13.50.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 02 Aug 2021 13:50:56 -0700 (PDT) From: Peilin Ye To: Shuah Khan , Jamal Hadi Salim , Cong Wang , Jiri Pirko , "David S. Miller" , Jakub Kicinski , netdev@vger.kernel.org Cc: linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, Daniel Borkmann , Cong Wang , Peilin Ye , Peilin Ye Subject: [PATCH net-next 2/2] tc-testing/ingress: Add control-plane selftests for clsact egress mini-Qdisc option Date: Mon, 2 Aug 2021 13:50:36 -0700 Message-Id: <165f9fb53d04c62e11f87c98ee317fb9a5aaa277.1627936393.git.peilin.ye@bytedance.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <1931ca440b47344fe357d5438aeab4b439943d10.1627936393.git.peilin.ye@bytedance.com> References: <1931ca440b47344fe357d5438aeab4b439943d10.1627936393.git.peilin.ye@bytedance.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Peilin Ye Recently we added a new clsact egress mini-Qdisc option for sch_ingress. Add a few control-plane tdc.py selftests for it. Depends on kernel patch "net/sched: sch_ingress: Support clsact egress mini-Qdisc option", as well as iproute2 patch "tc/ingress: Introduce clsact egress mini-Qdisc option". Reviewed-by: Cong Wang Signed-off-by: Peilin Ye --- .../tc-testing/tc-tests/qdiscs/ingress.json | 84 +++++++++++++++++++ 1 file changed, 84 insertions(+) diff --git a/tools/testing/selftests/tc-testing/tc-tests/qdiscs/ingress.json b/tools/testing/selftests/tc-testing/tc-tests/qdiscs/ingress.json index d99dba6e2b1a..2cde11b2ea9b 100644 --- a/tools/testing/selftests/tc-testing/tc-tests/qdiscs/ingress.json +++ b/tools/testing/selftests/tc-testing/tc-tests/qdiscs/ingress.json @@ -98,5 +98,89 @@ "teardown": [ "$IP link del dev $DUMMY type dummy" ] + }, + { + "id": "8e8c", + "name": "Enable clsact egress mini-qdisc for ingress", + "category": [ + "qdisc", + "ingress" + ], + "setup": [ + "$IP link add dev $DUMMY type dummy || /bin/true", + "$TC qdisc add dev $DUMMY ingress" + ], + "cmdUnderTest": "$TC qdisc change dev $DUMMY ingress clsact-on", + "expExitCode": "0", + "verifyCmd": "$TC qdisc show dev $DUMMY", + "matchPattern": "qdisc ingress ffff:.*clsact", + "matchCount": "1", + "teardown": [ + "$IP link del dev $DUMMY type dummy" + ] + }, + { + "id": "3a76", + "name": "Disable clsact egress mini-qdisc for ingress", + "category": [ + "qdisc", + "ingress" + ], + "setup": [ + "$IP link add dev $DUMMY type dummy || /bin/true", + "$TC qdisc add dev $DUMMY ingress", + "$TC qdisc change dev $DUMMY ingress clsact-on" + ], + "cmdUnderTest": "$TC qdisc change dev $DUMMY ingress clsact-off", + "expExitCode": "0", + "verifyCmd": "$TC qdisc show dev $DUMMY", + "matchPattern": "qdisc ingress ffff:.*clsact", + "matchCount": "0", + "teardown": [ + "$IP link del dev $DUMMY type dummy" + ] + }, + { + "id": "7b2b", + "name": "Enable clsact egress mini-qdisc for ingress twice", + "category": [ + "qdisc", + "ingress" + ], + "setup": [ + "$IP link add dev $DUMMY type dummy || /bin/true", + "$TC qdisc add dev $DUMMY ingress", + "$TC qdisc change dev $DUMMY ingress clsact-on" + ], + "cmdUnderTest": "$TC qdisc change dev $DUMMY ingress clsact-on", + "expExitCode": "2", + "verifyCmd": "$TC qdisc show dev $DUMMY", + "matchPattern": "qdisc ingress ffff:.*clsact", + "matchCount": "1", + "teardown": [ + "$IP link del dev $DUMMY type dummy" + ] + }, + { + "id": "05ab", + "name": "Disable clsact egress mini-qdisc for ingress twice", + "category": [ + "qdisc", + "ingress" + ], + "setup": [ + "$IP link add dev $DUMMY type dummy || /bin/true", + "$TC qdisc add dev $DUMMY ingress", + "$TC qdisc change dev $DUMMY ingress clsact-on", + "$TC qdisc change dev $DUMMY ingress clsact-off" + ], + "cmdUnderTest": "$TC qdisc change dev $DUMMY ingress clsact-off", + "expExitCode": "2", + "verifyCmd": "$TC qdisc show dev $DUMMY", + "matchPattern": "qdisc ingress ffff:.*clsact", + "matchCount": "0", + "teardown": [ + "$IP link del dev $DUMMY type dummy" + ] } ]