From patchwork Thu Jan 25 10:15:32 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ursula Braun X-Patchwork-Id: 865807 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3zRybv3pHqz9s7s for ; Thu, 25 Jan 2018 21:15:55 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751206AbeAYKPt (ORCPT ); Thu, 25 Jan 2018 05:15:49 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:58884 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1750851AbeAYKPq (ORCPT ); Thu, 25 Jan 2018 05:15:46 -0500 Received: from pps.filterd (m0098419.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w0PAFF54130000 for ; Thu, 25 Jan 2018 05:15:46 -0500 Received: from e06smtp14.uk.ibm.com (e06smtp14.uk.ibm.com [195.75.94.110]) by mx0b-001b2d01.pphosted.com with ESMTP id 2fqb115w0q-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Thu, 25 Jan 2018 05:15:45 -0500 Received: from localhost by e06smtp14.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 25 Jan 2018 10:15:43 -0000 Received: from b06cxnps4074.portsmouth.uk.ibm.com (9.149.109.196) by e06smtp14.uk.ibm.com (192.168.101.144) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; Thu, 25 Jan 2018 10:15:41 -0000 Received: from d06av24.portsmouth.uk.ibm.com (mk.ibm.com [9.149.105.60]) by b06cxnps4074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w0PAFfV150004002; Thu, 25 Jan 2018 10:15:41 GMT Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 2DCA842042; Thu, 25 Jan 2018 10:08:56 +0000 (GMT) Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id DCD9B4203F; Thu, 25 Jan 2018 10:08:55 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.152.85.9]) by d06av24.portsmouth.uk.ibm.com (Postfix) with ESMTPS; Thu, 25 Jan 2018 10:08:55 +0000 (GMT) From: Ursula Braun To: davem@davemloft.net Cc: netdev@vger.kernel.org, linux-s390@vger.kernel.org, jwi@linux.vnet.ibm.com, schwidefsky@de.ibm.com, heiko.carstens@de.ibm.com, raspl@linux.vnet.ibm.com, ubraun@linux.vnet.ibm.com Subject: [PATCH net-next 2/6] net/smc: handle state SMC_PEERFINCLOSEWAIT correctly Date: Thu, 25 Jan 2018 11:15:32 +0100 X-Mailer: git-send-email 2.13.5 In-Reply-To: <20180125101536.15727-1-ubraun@linux.vnet.ibm.com> References: <20180125101536.15727-1-ubraun@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 18012510-0016-0000-0000-0000051BA7DE X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18012510-0017-0000-0000-0000285834E8 Message-Id: <20180125101536.15727-3-ubraun@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2018-01-25_03:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1709140000 definitions=main-1801250141 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org A state transition from closing state SMC_PEERFINCLOSEWAIT to closing state SMC_APPFINCLOSEWAIT is not allowed. Once a closing indication from the peer has been received, the socket reaches state SMC_CLOSED. And receiving a peer_conn_abort just changes the state of the socket into one of the states SMC_PROCESSABORT or SMC_CLOSED; sending a peer_conn_abort occurs in smc_close_active() for state SMC_PROCESSABORT only. Signed-off-by: Ursula Braun --- net/smc/smc_close.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/net/smc/smc_close.c b/net/smc/smc_close.c index 6de909612bd0..3dc109f5db56 100644 --- a/net/smc/smc_close.c +++ b/net/smc/smc_close.c @@ -280,7 +280,6 @@ static void smc_close_passive_abort_received(struct smc_sock *smc) case SMC_APPFINCLOSEWAIT: case SMC_APPCLOSEWAIT1: case SMC_APPCLOSEWAIT2: - smc_close_abort(&smc->conn); sk->sk_state = SMC_PROCESSABORT; break; case SMC_PEERCLOSEWAIT1: @@ -288,7 +287,6 @@ static void smc_close_passive_abort_received(struct smc_sock *smc) if (txflags->peer_done_writing && !smc_close_sent_any_close(&smc->conn)) { /* just shutdown, but not yet closed locally */ - smc_close_abort(&smc->conn); sk->sk_state = SMC_PROCESSABORT; } else { sk->sk_state = SMC_CLOSED; @@ -354,7 +352,6 @@ static void smc_close_passive_work(struct work_struct *work) /* fall through */ /* to check for closing */ case SMC_PEERCLOSEWAIT2: - case SMC_PEERFINCLOSEWAIT: if (!smc_cdc_rxed_any_close(conn)) break; if (sock_flag(sk, SOCK_DEAD) && @@ -366,6 +363,10 @@ static void smc_close_passive_work(struct work_struct *work) sk->sk_state = SMC_APPFINCLOSEWAIT; } break; + case SMC_PEERFINCLOSEWAIT: + if (smc_cdc_rxed_any_close(conn)) + sk->sk_state = SMC_CLOSED; + break; case SMC_APPCLOSEWAIT1: case SMC_APPCLOSEWAIT2: case SMC_APPFINCLOSEWAIT: