From patchwork Thu Oct 28 07:13:45 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tony Lu X-Patchwork-Id: 12589413 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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E72D4C433FE for ; Thu, 28 Oct 2021 07:14:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C398D6108F for ; Thu, 28 Oct 2021 07:14:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229813AbhJ1HQn (ORCPT ); Thu, 28 Oct 2021 03:16:43 -0400 Received: from out30-42.freemail.mail.aliyun.com ([115.124.30.42]:47113 "EHLO out30-42.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229626AbhJ1HQn (ORCPT ); Thu, 28 Oct 2021 03:16:43 -0400 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R251e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e04395;MF=tonylu@linux.alibaba.com;NM=1;PH=DS;RN=9;SR=0;TI=SMTPD_---0UtyxoYA_1635405254; Received: from localhost(mailfrom:tonylu@linux.alibaba.com fp:SMTPD_---0UtyxoYA_1635405254) by smtp.aliyun-inc.com(127.0.0.1); Thu, 28 Oct 2021 15:14:14 +0800 From: Tony Lu To: kgraul@linux.ibm.com, davem@davemloft.net Cc: netdev@vger.kernel.org, linux-s390@vger.kernel.org, linux-rdma@vger.kernel.org, jacob.qi@linux.alibaba.com, xuanzhuo@linux.alibaba.com, guwen@linux.alibaba.com, dust.li@linux.alibaba.com Subject: [PATCH net v2 1/2] net/smc: Fix smc_link->llc_testlink_time overflow Date: Thu, 28 Oct 2021 15:13:45 +0800 Message-Id: <20211028071344.11168-2-tonylu@linux.alibaba.com> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20211028071344.11168-1-tonylu@linux.alibaba.com> References: <20211028071344.11168-1-tonylu@linux.alibaba.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org The value of llc_testlink_time is set to the value stored in net->ipv4.sysctl_tcp_keepalive_time when linkgroup init. The value of sysctl_tcp_keepalive_time is already jiffies, so we don't need to multiply by HZ, which would cause smc_link->llc_testlink_time overflow, and test_link send flood. Signed-off-by: Tony Lu Reviewed-by: Xuan Zhuo Reviewed-by: Wen Gu --- v1->v2: - fix wrong email address. --- net/smc/smc_llc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/smc/smc_llc.c b/net/smc/smc_llc.c index 72f4b72eb175..f1d323439a2a 100644 --- a/net/smc/smc_llc.c +++ b/net/smc/smc_llc.c @@ -1822,7 +1822,7 @@ void smc_llc_link_active(struct smc_link *link) link->smcibdev->ibdev->name, link->ibport); link->state = SMC_LNK_ACTIVE; if (link->lgr->llc_testlink_time) { - link->llc_testlink_time = link->lgr->llc_testlink_time * HZ; + link->llc_testlink_time = link->lgr->llc_testlink_time; schedule_delayed_work(&link->llc_testlink_wrk, link->llc_testlink_time); }