From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 8CFDBC43603 for ; Wed, 18 Dec 2019 16:35:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 664A92053B for ; Wed, 18 Dec 2019 16:35:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727584AbfLRQfF (ORCPT ); Wed, 18 Dec 2019 11:35:05 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:7962 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727533AbfLRQfA (ORCPT ); Wed, 18 Dec 2019 11:35:00 -0500 Received: from pps.filterd (m0098414.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id xBIGYoWM091773 for ; Wed, 18 Dec 2019 11:34:59 -0500 Received: from e06smtp05.uk.ibm.com (e06smtp05.uk.ibm.com [195.75.94.101]) by mx0b-001b2d01.pphosted.com with ESMTP id 2wym9r0g2t-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Wed, 18 Dec 2019 11:34:59 -0500 Received: from localhost by e06smtp05.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Wed, 18 Dec 2019 16:34:54 -0000 Received: from d06av23.portsmouth.uk.ibm.com (d06av23.portsmouth.uk.ibm.com [9.149.105.59]) by b06cxnps4074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id xBIGYr5u46530794 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 18 Dec 2019 16:34:53 GMT Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 4E179A4055; Wed, 18 Dec 2019 16:34:53 +0000 (GMT) Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 0DE54A4051; Wed, 18 Dec 2019 16:34:53 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.152.85.9]) by d06av23.portsmouth.uk.ibm.com (Postfix) with ESMTP; Wed, 18 Dec 2019 16:34:52 +0000 (GMT) From: Julian Wiedmann To: David Miller Cc: , , Heiko Carstens , Stefan Raspl , Ursula Braun , Julian Wiedmann Subject: [PATCH net-next 5/9] s390/qeth: remove open-coded inet_make_mask() Date: Wed, 18 Dec 2019 17:34:46 +0100 X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191218163450.36731-1-jwi@linux.ibm.com> References: <20191218163450.36731-1-jwi@linux.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 19121816-0020-0000-0000-00000399938B X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19121816-0021-0000-0000-000021F0B767 Message-Id: <20191218163450.36731-6-jwi@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.95,18.0.572 definitions=2019-12-18_05:2019-12-17,2019-12-18 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 mlxlogscore=999 suspectscore=0 impostorscore=0 phishscore=0 lowpriorityscore=0 malwarescore=0 bulkscore=0 spamscore=0 clxscore=1015 priorityscore=1501 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1910280000 definitions=main-1912180136 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Use inet_make_mask() to replace some complicated bit-fiddling. Also use the right data types to replace some raw memcpy calls with proper assignments. Signed-off-by: Julian Wiedmann --- drivers/s390/net/qeth_core_mpc.h | 8 ++++---- drivers/s390/net/qeth_l3.h | 2 +- drivers/s390/net/qeth_l3_main.c | 34 ++++++++++++++------------------ 3 files changed, 20 insertions(+), 24 deletions(-) diff --git a/drivers/s390/net/qeth_core_mpc.h b/drivers/s390/net/qeth_core_mpc.h index 88f4dc140751..f13225b43781 100644 --- a/drivers/s390/net/qeth_core_mpc.h +++ b/drivers/s390/net/qeth_core_mpc.h @@ -338,14 +338,14 @@ enum qeth_card_info_port_speed { /* (SET)DELIP(M) IPA stuff ***************************************************/ struct qeth_ipacmd_setdelip4 { - __u8 ip_addr[4]; - __u8 mask[4]; + __be32 addr; + __be32 mask; __u32 flags; } __attribute__ ((packed)); struct qeth_ipacmd_setdelip6 { - __u8 ip_addr[16]; - __u8 mask[16]; + struct in6_addr addr; + struct in6_addr prefix; __u32 flags; } __attribute__ ((packed)); diff --git a/drivers/s390/net/qeth_l3.h b/drivers/s390/net/qeth_l3.h index 2383ffad0a4a..89fb91dad12e 100644 --- a/drivers/s390/net/qeth_l3.h +++ b/drivers/s390/net/qeth_l3.h @@ -35,7 +35,7 @@ struct qeth_ipaddr { union { struct { __be32 addr; - unsigned int mask; + __be32 mask; } a4; struct { struct in6_addr addr; diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c index 8db548340632..bd2273f9ca35 100644 --- a/drivers/s390/net/qeth_l3_main.c +++ b/drivers/s390/net/qeth_l3_main.c @@ -369,17 +369,16 @@ static int qeth_l3_send_setdelmc(struct qeth_card *card, return qeth_send_ipa_cmd(card, iob, qeth_l3_setdelip_cb, NULL); } -static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len) +static void qeth_l3_set_ipv6_prefix(struct in6_addr *prefix, unsigned int len) { - int i, j; - for (i = 0; i < 16; i++) { - j = (len) - (i * 8); - if (j >= 8) - netmask[i] = 0xff; - else if (j > 0) - netmask[i] = (u8)(0xFF00 >> j); - else - netmask[i] = 0; + unsigned int i = 0; + + while (len && i < 4) { + int mask_len = min_t(int, len, 32); + + prefix->s6_addr32[i] = inet_make_mask(mask_len); + len -= mask_len; + i++; } } @@ -402,7 +401,6 @@ static int qeth_l3_send_setdelip(struct qeth_card *card, { struct qeth_cmd_buffer *iob; struct qeth_ipa_cmd *cmd; - __u8 netmask[16]; u32 flags; QETH_CARD_TEXT(card, 4, "setdelip"); @@ -417,15 +415,13 @@ static int qeth_l3_send_setdelip(struct qeth_card *card, QETH_CARD_TEXT_(card, 4, "flags%02X", flags); if (addr->proto == QETH_PROT_IPV6) { - memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr, - sizeof(struct in6_addr)); - qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen); - memcpy(cmd->data.setdelip6.mask, netmask, - sizeof(struct in6_addr)); + cmd->data.setdelip6.addr = addr->u.a6.addr; + qeth_l3_set_ipv6_prefix(&cmd->data.setdelip6.prefix, + addr->u.a6.pfxlen); cmd->data.setdelip6.flags = flags; } else { - memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4); - memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4); + cmd->data.setdelip4.addr = addr->u.a4.addr; + cmd->data.setdelip4.mask = addr->u.a4.mask; cmd->data.setdelip4.flags = flags; } @@ -2436,7 +2432,7 @@ static int qeth_l3_ip_event(struct notifier_block *this, qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4); addr.u.a4.addr = ifa->ifa_address; - addr.u.a4.mask = be32_to_cpu(ifa->ifa_mask); + addr.u.a4.mask = ifa->ifa_mask; return qeth_l3_handle_ip_event(card, &addr, event); } -- 2.17.1