From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Fastabend Subject: [RFC PATCH v2 09/10] net: sched: helper to sum qlen Date: Wed, 13 Jul 2016 23:23:38 -0700 Message-ID: <20160714062338.8270.69636.stgit@john-Precision-Tower-5810> References: <20160714061852.8270.66271.stgit@john-Precision-Tower-5810> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org To: fw@strlen.de, jhs@mojatatu.com, alexei.starovoitov@gmail.com, eric.dumazet@gmail.com, brouer@redhat.com Return-path: Received: from mail-pa0-f68.google.com ([209.85.220.68]:36250 "EHLO mail-pa0-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751408AbcGNGXy (ORCPT ); Thu, 14 Jul 2016 02:23:54 -0400 Received: by mail-pa0-f68.google.com with SMTP id ez1so722721pab.3 for ; Wed, 13 Jul 2016 23:23:54 -0700 (PDT) In-Reply-To: <20160714061852.8270.66271.stgit@john-Precision-Tower-5810> Sender: netdev-owner@vger.kernel.org List-ID: Reporting qlen when qlen is per cpu requires aggregating the per cpu counters. This adds a helper routine for this. Signed-off-by: John Fastabend --- include/net/sch_generic.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h index 149f079..d370fee 100644 --- a/include/net/sch_generic.h +++ b/include/net/sch_generic.h @@ -271,6 +271,21 @@ static inline int qdisc_qlen(const struct Qdisc *q) return q->q.qlen; } +static inline int qdisc_qlen_sum(const struct Qdisc *q) +{ + __u32 qlen = 0; + int i; + + if (q->flags & TCQ_F_NOLOCK) { + for_each_possible_cpu(i) + qlen += per_cpu_ptr(q->cpu_qstats, i)->qlen; + } else { + qlen = q->q.qlen; + } + + return qlen; +} + static inline struct qdisc_skb_cb *qdisc_skb_cb(const struct sk_buff *skb) { return (struct qdisc_skb_cb *)skb->cb;