From patchwork Thu Nov 26 20:39:09 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Karsten Graul X-Patchwork-Id: 11934743 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=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 7C918C63798 for ; Thu, 26 Nov 2020 20:42:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1DDFA21D91 for ; Thu, 26 Nov 2020 20:42:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b="gmFKDUnC" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391523AbgKZUmC (ORCPT ); Thu, 26 Nov 2020 15:42:02 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:61108 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2391431AbgKZUmB (ORCPT ); Thu, 26 Nov 2020 15:42:01 -0500 Received: from pps.filterd (m0098396.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 0AQKYFYh019683; Thu, 26 Nov 2020 15:41:59 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : in-reply-to : references; s=pp1; bh=btU64YZMlfBupi2PAU8bk1pdlvTby4GSm9PUxmSR3iQ=; b=gmFKDUnCv/kpjxW42bhiVqGD6HjGevThMytqj22vIvARauauzaKm3q4QMEJkmnuPUQK3 QF2HqeHI/32Db9lalmOjEEnjBsNBOrvdw0R6DXj2IpkO9jkKR/DzRgR3w8+beSjK/Tew RHbVzRprT/ZYNg0RZfQxorSa5wFKfZCBDC7r8+fJC1Pql3Z8VupCNK/+XehsVlOBwIbS o5Jp2ddMELnZnAH10XcW9GKT+RZgF4yx6tzTIg8oFGJ3yqDIQHs8WXoofTU0KH6NNjXq nzBx5HCKxEaqVj+vhJiA9i9r1Y1yd5LV6N72s1rObjsQ/LmH54F56xRjc0UOiNWhDWTe pQ== Received: from ppma03fra.de.ibm.com (6b.4a.5195.ip4.static.sl-reverse.com [149.81.74.107]) by mx0a-001b2d01.pphosted.com with ESMTP id 352jvm8vca-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 26 Nov 2020 15:41:59 -0500 Received: from pps.filterd (ppma03fra.de.ibm.com [127.0.0.1]) by ppma03fra.de.ibm.com (8.16.0.42/8.16.0.42) with SMTP id 0AQKWM5P025345; Thu, 26 Nov 2020 20:41:57 GMT Received: from b06cxnps4076.portsmouth.uk.ibm.com (d06relay13.portsmouth.uk.ibm.com [9.149.109.198]) by ppma03fra.de.ibm.com with ESMTP id 352jgsg28c-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 26 Nov 2020 20:41:57 +0000 Received: from d06av23.portsmouth.uk.ibm.com (d06av23.portsmouth.uk.ibm.com [9.149.105.59]) by b06cxnps4076.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 0AQKdOSf1704548 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 26 Nov 2020 20:39:24 GMT Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7A8D3A4051; Thu, 26 Nov 2020 20:39:24 +0000 (GMT) Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 45607A404D; Thu, 26 Nov 2020 20:39:24 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.152.85.9]) by d06av23.portsmouth.uk.ibm.com (Postfix) with ESMTP; Thu, 26 Nov 2020 20:39:24 +0000 (GMT) From: Karsten Graul To: David Miller , Jakub Kicinski Cc: Heiko Carstens , Stefan Raspl , netdev@vger.kernel.org, linux-s390@vger.kernel.org Subject: [PATCH net-next v6 07/14] net/smc: Refactor smc ism v2 capability handling Date: Thu, 26 Nov 2020 21:39:09 +0100 Message-Id: <20201126203916.56071-8-kgraul@linux.ibm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20201126203916.56071-1-kgraul@linux.ibm.com> References: <20201126203916.56071-1-kgraul@linux.ibm.com> X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.312,18.0.737 definitions=2020-11-26_09:2020-11-26,2020-11-26 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 impostorscore=0 spamscore=0 bulkscore=0 mlxlogscore=999 priorityscore=1501 malwarescore=0 mlxscore=0 adultscore=0 phishscore=0 lowpriorityscore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2011260128 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Guvenc Gulce Encapsulate the smc ism v2 capability boolean value in a function for better information hiding. Signed-off-by: Guvenc Gulce Signed-off-by: Karsten Graul --- net/smc/af_smc.c | 12 ++++++------ net/smc/smc_ism.c | 8 +++++++- net/smc/smc_ism.h | 5 ++--- 3 files changed, 15 insertions(+), 10 deletions(-) diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c index 13db3f260e94..f79b59a972f0 100644 --- a/net/smc/af_smc.c +++ b/net/smc/af_smc.c @@ -668,7 +668,7 @@ static int smc_find_proposal_devices(struct smc_sock *smc, ini->smc_type_v1 = SMC_TYPE_N; } /* else RDMA is supported for this connection */ } - if (smc_ism_v2_capable && smc_find_ism_v2_device_clnt(smc, ini)) + if (smc_ism_is_v2_capable() && smc_find_ism_v2_device_clnt(smc, ini)) ini->smc_type_v2 = SMC_TYPE_N; /* if neither ISM nor RDMA are supported, fallback */ @@ -920,7 +920,7 @@ static int smc_connect_check_aclc(struct smc_init_info *ini, /* perform steps before actually connecting */ static int __smc_connect(struct smc_sock *smc) { - u8 version = smc_ism_v2_capable ? SMC_V2 : SMC_V1; + u8 version = smc_ism_is_v2_capable() ? SMC_V2 : SMC_V1; struct smc_clc_msg_accept_confirm_v2 *aclc2; struct smc_clc_msg_accept_confirm *aclc; struct smc_init_info *ini = NULL; @@ -945,9 +945,9 @@ static int __smc_connect(struct smc_sock *smc) version); ini->smcd_version = SMC_V1; - ini->smcd_version |= smc_ism_v2_capable ? SMC_V2 : 0; + ini->smcd_version |= smc_ism_is_v2_capable() ? SMC_V2 : 0; ini->smc_type_v1 = SMC_TYPE_B; - ini->smc_type_v2 = smc_ism_v2_capable ? SMC_TYPE_D : SMC_TYPE_N; + ini->smc_type_v2 = smc_ism_is_v2_capable() ? SMC_TYPE_D : SMC_TYPE_N; /* get vlan id from IP device */ if (smc_vlan_by_tcpsk(smc->clcsock, ini)) { @@ -1355,7 +1355,7 @@ static int smc_listen_v2_check(struct smc_sock *new_smc, rc = SMC_CLC_DECL_PEERNOSMC; goto out; } - if (!smc_ism_v2_capable) { + if (!smc_ism_is_v2_capable()) { ini->smcd_version &= ~SMC_V2; rc = SMC_CLC_DECL_NOISM2SUPP; goto out; @@ -1681,7 +1681,7 @@ static void smc_listen_work(struct work_struct *work) { struct smc_sock *new_smc = container_of(work, struct smc_sock, smc_listen_work); - u8 version = smc_ism_v2_capable ? SMC_V2 : SMC_V1; + u8 version = smc_ism_is_v2_capable() ? SMC_V2 : SMC_V1; struct socket *newclcsock = new_smc->clcsock; struct smc_clc_msg_accept_confirm *cclc; struct smc_clc_msg_proposal_area *buf; diff --git a/net/smc/smc_ism.c b/net/smc/smc_ism.c index 6abbdd09a580..2456ee8228cd 100644 --- a/net/smc/smc_ism.c +++ b/net/smc/smc_ism.c @@ -21,7 +21,7 @@ struct smcd_dev_list smcd_dev_list = { .mutex = __MUTEX_INITIALIZER(smcd_dev_list.mutex) }; -bool smc_ism_v2_capable; +static bool smc_ism_v2_capable; /* Test if an ISM communication is possible - same CPC */ int smc_ism_cantalk(u64 peer_gid, unsigned short vlan_id, struct smcd_dev *smcd) @@ -51,6 +51,12 @@ u16 smc_ism_get_chid(struct smcd_dev *smcd) return smcd->ops->get_chid(smcd); } +/* HW supports ISM V2 and thus System EID is defined */ +bool smc_ism_is_v2_capable(void) +{ + return smc_ism_v2_capable; +} + /* Set a connection using this DMBE. */ void smc_ism_set_conn(struct smc_connection *conn) { diff --git a/net/smc/smc_ism.h b/net/smc/smc_ism.h index 8048e09ddcf8..481a4b7df30b 100644 --- a/net/smc/smc_ism.h +++ b/net/smc/smc_ism.h @@ -10,6 +10,7 @@ #define SMCD_ISM_H #include +#include #include #include "smc.h" @@ -20,9 +21,6 @@ struct smcd_dev_list { /* List of SMCD devices */ }; extern struct smcd_dev_list smcd_dev_list; /* list of smcd devices */ -extern bool smc_ism_v2_capable; /* HW supports ISM V2 and thus - * System EID is defined - */ struct smc_ism_vlanid { /* VLAN id set on ISM device */ struct list_head list; @@ -52,5 +50,6 @@ int smc_ism_write(struct smcd_dev *dev, const struct smc_ism_position *pos, int smc_ism_signal_shutdown(struct smc_link_group *lgr); void smc_ism_get_system_eid(struct smcd_dev *dev, u8 **eid); u16 smc_ism_get_chid(struct smcd_dev *dev); +bool smc_ism_is_v2_capable(void); void smc_ism_init(void); #endif