From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Julian Wiedmann Subject: [PATCH net-next 8/8] s390/qeth: trust non-IP cast type in qeth_l3_fill_header() Date: Thu, 25 Apr 2019 18:26:01 +0200 In-Reply-To: <20190425162601.91997-1-jwi@linux.ibm.com> References: <20190425162601.91997-1-jwi@linux.ibm.com> Message-Id: <20190425162601.91997-9-jwi@linux.ibm.com> Sender: netdev-owner@vger.kernel.org List-Archive: List-Post: To: David Miller Cc: netdev@vger.kernel.org, linux-s390@vger.kernel.org, Martin Schwidefsky , Heiko Carstens , Stefan Raspl , Ursula Braun , Julian Wiedmann List-ID: When building the L3 HW header for non-IP packets, trust the cast type that was passed as parameter. qeth_l3_get_cast_type() has most likely also used h_dest to determine the cast type, so we get the same result, and can remove that duplicated code. In the unlikely case that we would get a _different_ cast type, then that's based off a route lookup and should be considered authoritative. Signed-off-by: Julian Wiedmann --- drivers/s390/net/qeth_l3_main.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c index b5d76ebb488a..0271833da6a2 100644 --- a/drivers/s390/net/qeth_l3_main.c +++ b/drivers/s390/net/qeth_l3_main.c @@ -1976,19 +1976,14 @@ static void qeth_l3_fill_header(struct qeth_qdio_out_q *queue, hdr->hdr.l3.vlan_id = ntohs(veth->h_vlan_TCI); } + l3_hdr->flags = qeth_l3_cast_type_to_flag(cast_type); + /* OSA only: */ if (!ipv) { - hdr->hdr.l3.flags = QETH_HDR_PASSTHRU; - if (ether_addr_equal_64bits(eth_hdr(skb)->h_dest, - skb->dev->broadcast)) - hdr->hdr.l3.flags |= QETH_CAST_BROADCAST; - else - hdr->hdr.l3.flags |= (cast_type == RTN_MULTICAST) ? - QETH_CAST_MULTICAST : QETH_CAST_UNICAST; + l3_hdr->flags |= QETH_HDR_PASSTHRU; return; } - hdr->hdr.l3.flags = qeth_l3_cast_type_to_flag(cast_type); rcu_read_lock(); if (ipv == 4) { struct rtable *rt = skb_rtable(skb); -- 2.16.4 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=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 C3C38C43218 for ; Thu, 25 Apr 2019 16:26:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 305FC2088F for ; Thu, 25 Apr 2019 16:26:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729961AbfDYQ00 (ORCPT ); Thu, 25 Apr 2019 12:26:26 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:39280 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729906AbfDYQ0S (ORCPT ); Thu, 25 Apr 2019 12:26:18 -0400 Received: from pps.filterd (m0098396.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x3PGMPmE049219 for ; Thu, 25 Apr 2019 12:26:17 -0400 Received: from e06smtp07.uk.ibm.com (e06smtp07.uk.ibm.com [195.75.94.103]) by mx0a-001b2d01.pphosted.com with ESMTP id 2s3d8khnya-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Thu, 25 Apr 2019 12:26:16 -0400 Received: from localhost by e06smtp07.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 25 Apr 2019 17:26:14 +0100 Received: from b06cxnps4075.portsmouth.uk.ibm.com (9.149.109.197) by e06smtp07.uk.ibm.com (192.168.101.137) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Thu, 25 Apr 2019 17:26:12 +0100 Received: from d06av24.portsmouth.uk.ibm.com (mk.ibm.com [9.149.105.60]) by b06cxnps4075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x3PGQBRt41222184 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 25 Apr 2019 16:26:11 GMT Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 1FAC04203F; Thu, 25 Apr 2019 16:26:11 +0000 (GMT) Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id BDC6842042; Thu, 25 Apr 2019 16:26:10 +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 Apr 2019 16:26:10 +0000 (GMT) From: Julian Wiedmann To: David Miller Cc: , , Martin Schwidefsky , Heiko Carstens , Stefan Raspl , Ursula Braun , Julian Wiedmann Subject: [PATCH net-next 8/8] s390/qeth: trust non-IP cast type in qeth_l3_fill_header() Date: Thu, 25 Apr 2019 18:26:01 +0200 X-Mailer: git-send-email 2.16.4 In-Reply-To: <20190425162601.91997-1-jwi@linux.ibm.com> References: <20190425162601.91997-1-jwi@linux.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 19042516-0028-0000-0000-00000366C020 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19042516-0029-0000-0000-00002426178C Message-Id: <20190425162601.91997-9-jwi@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-04-25_13:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1904250100 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org When building the L3 HW header for non-IP packets, trust the cast type that was passed as parameter. qeth_l3_get_cast_type() has most likely also used h_dest to determine the cast type, so we get the same result, and can remove that duplicated code. In the unlikely case that we would get a _different_ cast type, then that's based off a route lookup and should be considered authoritative. Signed-off-by: Julian Wiedmann --- drivers/s390/net/qeth_l3_main.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c index b5d76ebb488a..0271833da6a2 100644 --- a/drivers/s390/net/qeth_l3_main.c +++ b/drivers/s390/net/qeth_l3_main.c @@ -1976,19 +1976,14 @@ static void qeth_l3_fill_header(struct qeth_qdio_out_q *queue, hdr->hdr.l3.vlan_id = ntohs(veth->h_vlan_TCI); } + l3_hdr->flags = qeth_l3_cast_type_to_flag(cast_type); + /* OSA only: */ if (!ipv) { - hdr->hdr.l3.flags = QETH_HDR_PASSTHRU; - if (ether_addr_equal_64bits(eth_hdr(skb)->h_dest, - skb->dev->broadcast)) - hdr->hdr.l3.flags |= QETH_CAST_BROADCAST; - else - hdr->hdr.l3.flags |= (cast_type == RTN_MULTICAST) ? - QETH_CAST_MULTICAST : QETH_CAST_UNICAST; + l3_hdr->flags |= QETH_HDR_PASSTHRU; return; } - hdr->hdr.l3.flags = qeth_l3_cast_type_to_flag(cast_type); rcu_read_lock(); if (ipv == 4) { struct rtable *rt = skb_rtable(skb); -- 2.16.4