From patchwork Fri Nov 20 09:09:37 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Julian Wiedmann X-Patchwork-Id: 329755 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 DACD2C63798 for ; Fri, 20 Nov 2020 09:10:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 69DD32224C for ; Fri, 20 Nov 2020 09:10:14 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b="E48yPKLq" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727373AbgKTJJy (ORCPT ); Fri, 20 Nov 2020 04:09:54 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:47536 "EHLO mx0b-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727076AbgKTJJu (ORCPT ); Fri, 20 Nov 2020 04:09:50 -0500 Received: from pps.filterd (m0098417.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 0AK92sDU083705; Fri, 20 Nov 2020 04:09:45 -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=W4KBMexQPjUWj2cBMMYs4RkAMaVyQzVmG3fLg/yUmug=; b=E48yPKLqcEccwdugiWHgkdty02nHXOg60IKI1AcOTvUfhuewCmYY/I/iJoZ8Pkbcc3h1 LTcWNTyY0DtS5G23Qde3ez/WV3VpXIPsAHe2u6hersDMczuuJskMOQhkaFf4heD0vQzq rU/Gn07mB7fi17t9O2N6CG72WLXjB6cAu5oOyOcwxJppBDSvsGN1umBzAgFm046Pf057 vVf1bLhg1yxwOa+XKdzoibRwDvLMOfGwXZXbntukHZjmhuf+nGDZPLzFumeqLSsy26L4 +EuWCV8F+KnRnTR9JHdOsmmHcZUxfFUVK7TvwB3heZeQjtasyKpn9ApB0jcrfbGxcikB hw== 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 34x5v1fnvn-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 20 Nov 2020 04:09:45 -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 0AK993oI002018; Fri, 20 Nov 2020 09:09:44 GMT Received: from b06cxnps4075.portsmouth.uk.ibm.com (d06relay12.portsmouth.uk.ibm.com [9.149.109.197]) by ppma03fra.de.ibm.com with ESMTP id 34t6v835h9-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 20 Nov 2020 09:09:43 +0000 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 0AK99fWK852612 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 20 Nov 2020 09:09:41 GMT Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 01A954203F; Fri, 20 Nov 2020 09:09:41 +0000 (GMT) Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A734342045; Fri, 20 Nov 2020 09:09:40 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.152.85.9]) by d06av24.portsmouth.uk.ibm.com (Postfix) with ESMTP; Fri, 20 Nov 2020 09:09:40 +0000 (GMT) From: Julian Wiedmann To: David Miller , Jakub Kicinski Cc: linux-netdev , linux-s390 , Heiko Carstens , Karsten Graul , Julian Wiedmann Subject: [PATCH net 2/4] s390/qeth: make af_iucv TX notification call more robust Date: Fri, 20 Nov 2020 10:09:37 +0100 Message-Id: <20201120090939.101406-3-jwi@linux.ibm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20201120090939.101406-1-jwi@linux.ibm.com> References: <20201120090939.101406-1-jwi@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=2020-11-20_03:2020-11-19,2020-11-20 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 impostorscore=0 clxscore=1015 malwarescore=0 phishscore=0 spamscore=0 mlxscore=0 lowpriorityscore=0 adultscore=0 suspectscore=0 mlxlogscore=999 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2011200056 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Calling into socket code is ugly already, at least check whether we are dealing with the expected sk_family. Only looking at skb->protocol is bound to cause troubles (consider eg. af_packet). Fixes: b333293058aa ("qeth: add support for af_iucv HiperSockets transport") Signed-off-by: Julian Wiedmann --- drivers/s390/net/qeth_core_main.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index 93c9b30ab17a..715f440bdc7c 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -33,6 +33,7 @@ #include #include +#include #include #include @@ -1405,7 +1406,7 @@ static void qeth_notify_skbs(struct qeth_qdio_out_q *q, skb_queue_walk(&buf->skb_list, skb) { QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification); QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb); - if (skb->protocol == htons(ETH_P_AF_IUCV) && skb->sk) + if (skb->sk && skb->sk->sk_family == PF_IUCV) iucv_sk(skb->sk)->sk_txnotify(skb, notification); } }