From patchwork Thu Jan 28 11:41:05 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Julian Wiedmann X-Patchwork-Id: 373129 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 4B5F7C433E0 for ; Thu, 28 Jan 2021 11:42:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0E89E64DDA for ; Thu, 28 Jan 2021 11:42:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231528AbhA1LmO (ORCPT ); Thu, 28 Jan 2021 06:42:14 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:31326 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231462AbhA1Ll6 (ORCPT ); Thu, 28 Jan 2021 06:41:58 -0500 Received: from pps.filterd (m0098410.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 10SBVaHL049752; Thu, 28 Jan 2021 06:41:16 -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=HgBY0lzqAJW7PwV0iMzNACC7aJ3+keM5Iqz7N2wgfx4=; b=j6LczzMWjSR1jZYE7agkWbhZwcU4hVJK/YsqA0mOmzud6N1MZndQtAcv/8aMR2X5X4NS sg+8BBqudPUPmDstunCXrFxVrqq/pOnxCi95+s3yXsxxWt33Gi0pTwDC2MwRyyjXzIq7 nsblZjdR50BcOSos20OpontzQoS4vTXGdI0b4zmGsmSuVDnIaD+NRM8LFH5y8bVjKY+u BLxWK7GImYreNQA+MJG3jxwB3fzo9noTURkHm0d3Ei7IOCN2m1zCIMO5Rh+XGZRm2oOL 56e+rOIuxGCLbk35WFQCQh7l5mNogik7swDXPvtCDqGR/PL7ePsIBI/AIJP4N7ry35F6 HA== Received: from ppma02fra.de.ibm.com (47.49.7a9f.ip4.static.sl-reverse.com [159.122.73.71]) by mx0a-001b2d01.pphosted.com with ESMTP id 36bre47pvp-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 28 Jan 2021 06:41:16 -0500 Received: from pps.filterd (ppma02fra.de.ibm.com [127.0.0.1]) by ppma02fra.de.ibm.com (8.16.0.42/8.16.0.42) with SMTP id 10SBcK6A012492; Thu, 28 Jan 2021 11:41:14 GMT Received: from b06cxnps3075.portsmouth.uk.ibm.com (d06relay10.portsmouth.uk.ibm.com [9.149.109.195]) by ppma02fra.de.ibm.com with ESMTP id 368be8ag25-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 28 Jan 2021 11:41:14 +0000 Received: from d06av22.portsmouth.uk.ibm.com (d06av22.portsmouth.uk.ibm.com [9.149.105.58]) by b06cxnps3075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 10SBfBCD50594264 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 28 Jan 2021 11:41:11 GMT Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 6B48E4C044; Thu, 28 Jan 2021 11:41:11 +0000 (GMT) Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 0E6054C040; Thu, 28 Jan 2021 11:41:11 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.152.85.9]) by d06av22.portsmouth.uk.ibm.com (Postfix) with ESMTP; Thu, 28 Jan 2021 11:41:10 +0000 (GMT) From: Julian Wiedmann To: David Miller , Jakub Kicinski Cc: linux-netdev , linux-s390 , Heiko Carstens , Karsten Graul , Julian Wiedmann Subject: [PATCH net-next 2/5] net/af_iucv: don't lookup the socket on TX notification Date: Thu, 28 Jan 2021 12:41:05 +0100 Message-Id: <20210128114108.39409-3-jwi@linux.ibm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210128114108.39409-1-jwi@linux.ibm.com> References: <20210128114108.39409-1-jwi@linux.ibm.com> X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.343, 18.0.737 definitions=2021-01-28_05:2021-01-27,2021-01-28 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=999 malwarescore=0 bulkscore=0 clxscore=1015 lowpriorityscore=0 priorityscore=1501 mlxscore=0 adultscore=0 spamscore=0 phishscore=0 suspectscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2101280055 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Whoever called iucv_sk(sk)->sk_txnotify() must already know that they're dealing with an af_iucv socket. Signed-off-by: Julian Wiedmann --- net/iucv/af_iucv.c | 15 +++------------ 1 file changed, 3 insertions(+), 12 deletions(-) diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c index 427a1abce0a8..8683b6939f45 100644 --- a/net/iucv/af_iucv.c +++ b/net/iucv/af_iucv.c @@ -2134,23 +2134,14 @@ static int afiucv_hs_rcv(struct sk_buff *skb, struct net_device *dev, static void afiucv_hs_callback_txnotify(struct sk_buff *skb, enum iucv_tx_notify n) { - struct sock *isk = skb->sk; - struct sock *sk = NULL; - struct iucv_sock *iucv = NULL; + struct iucv_sock *iucv = iucv_sk(skb->sk); + struct sock *sk = skb->sk; struct sk_buff_head *list; struct sk_buff *list_skb; struct sk_buff *nskb; unsigned long flags; - read_lock_irqsave(&iucv_sk_list.lock, flags); - sk_for_each(sk, &iucv_sk_list.head) - if (sk == isk) { - iucv = iucv_sk(sk); - break; - } - read_unlock_irqrestore(&iucv_sk_list.lock, flags); - - if (!iucv || sock_flag(sk, SOCK_ZAPPED)) + if (sock_flag(sk, SOCK_ZAPPED)) return; list = &iucv->send_skb_q;