From patchwork Sat Sep 17 05:02:17 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: shaozhengchao X-Patchwork-Id: 12979032 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 383AFC6FA82 for ; Sat, 17 Sep 2022 05:00:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229450AbiIQFAj (ORCPT ); Sat, 17 Sep 2022 01:00:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51282 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229558AbiIQFAh (ORCPT ); Sat, 17 Sep 2022 01:00:37 -0400 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D2BA65A3F4; Fri, 16 Sep 2022 22:00:36 -0700 (PDT) Received: from dggpeml500026.china.huawei.com (unknown [172.30.72.55]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4MTzG66MwWzpStq; Sat, 17 Sep 2022 12:57:50 +0800 (CST) Received: from huawei.com (10.175.101.6) by dggpeml500026.china.huawei.com (7.185.36.106) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Sat, 17 Sep 2022 13:00:34 +0800 From: Zhengchao Shao To: , , , , , , , , , , , , , , CC: , , , Subject: [PATCH net-next,v2 01/18] net/sched: sch_api: add helper for tc qdisc walker stats dump Date: Sat, 17 Sep 2022 13:02:17 +0800 Message-ID: <20220917050217.127342-1-shaozhengchao@huawei.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 X-Originating-IP: [10.175.101.6] X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To dggpeml500026.china.huawei.com (7.185.36.106) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org The walk implementation of most qdisc class modules is basically the same. That is, the values of count and skip are checked first. If count is greater than or equal to skip, the registered fn function is executed. Otherwise, increase the value of count. So we can reconstruct them. Signed-off-by: Zhengchao Shao --- include/net/pkt_sched.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/include/net/pkt_sched.h b/include/net/pkt_sched.h index 29f65632ebc5..243e8b0cb7ea 100644 --- a/include/net/pkt_sched.h +++ b/include/net/pkt_sched.h @@ -222,4 +222,17 @@ static inline struct tc_skb_cb *tc_skb_cb(const struct sk_buff *skb) return cb; } +static inline bool tc_qdisc_stats_dump(struct Qdisc *sch, + struct qdisc_walker *arg, + unsigned long cl) +{ + if (arg->count >= arg->skip && arg->fn(sch, cl, arg) < 0) { + arg->stop = 1; + return false; + } + + arg->count++; + return true; +} + #endif