From patchwork Wed May 20 19:54:57 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11561469 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id CF47914C0 for ; Wed, 20 May 2020 20:00:52 +0000 (UTC) Received: from userp2120.oracle.com (userp2120.oracle.com [156.151.31.85]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A53A1207D8 for ; Wed, 20 May 2020 20:00:52 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A53A1207D8 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=ocfs2-devel-bounces@oss.oracle.com Received: from pps.filterd (userp2120.oracle.com [127.0.0.1]) by userp2120.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 04KJvRlw163290; Wed, 20 May 2020 20:00:38 GMT Received: from userp3020.oracle.com (userp3020.oracle.com [156.151.31.79]) by userp2120.oracle.com with ESMTP id 31501rbnwv-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Wed, 20 May 2020 20:00:38 +0000 Received: from pps.filterd (userp3020.oracle.com [127.0.0.1]) by userp3020.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 04KJxC6x089573; Wed, 20 May 2020 20:00:37 GMT Received: from oss.oracle.com (oss-old-reserved.oracle.com [137.254.22.2]) by userp3020.oracle.com with ESMTP id 315020wkjw-1 (version=TLSv1 cipher=AES256-SHA bits=256 verify=NO); Wed, 20 May 2020 20:00:37 +0000 Received: from localhost ([127.0.0.1] helo=lb-oss.oracle.com) by oss.oracle.com with esmtp (Exim 4.63) (envelope-from ) id 1jbUqF-0000gB-Ox; Wed, 20 May 2020 12:57:27 -0700 Received: from userp3030.oracle.com ([156.151.31.80]) by oss.oracle.com with esmtp (Exim 4.63) (envelope-from ) id 1jbUpk-0000Dr-2n; Wed, 20 May 2020 12:56:56 -0700 Received: from pps.filterd (userp3030.oracle.com [127.0.0.1]) by userp3030.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 04KJmgKg072157; Wed, 20 May 2020 19:56:55 GMT Received: from userp2040.oracle.com (userp2040.oracle.com [156.151.31.90]) by userp3030.oracle.com with ESMTP id 314gm7pdav-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 20 May 2020 19:56:55 +0000 Received: from pps.filterd (userp2040.oracle.com [127.0.0.1]) by userp2040.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 04KJWft4005426; Wed, 20 May 2020 19:56:55 GMT Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) by userp2040.oracle.com with ESMTP id 314w4n8604-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Wed, 20 May 2020 19:56:55 +0000 Received: from [2001:4bb8:188:1506:c70:4a89:bc61:2] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1jbUp0-0002zZ-TE; Wed, 20 May 2020 19:56:11 +0000 From: Christoph Hellwig To: "David S. Miller" , Jakub Kicinski Date: Wed, 20 May 2020 21:54:57 +0200 Message-Id: <20200520195509.2215098-22-hch@lst.de> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200520195509.2215098-1-hch@lst.de> References: <20200520195509.2215098-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html X-PDR: PASS X-Source-IP: 198.137.202.133 X-ServerName: bombadil.infradead.org X-Proofpoint-SPF-Result: None X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9627 signatures=668686 X-Proofpoint-Spam-Details: rule=tap_notspam policy=tap score=0 priorityscore=0 mlxscore=0 mlxlogscore=999 spamscore=0 lowpriorityscore=0 clxscore=237 suspectscore=0 phishscore=0 impostorscore=0 malwarescore=0 bulkscore=0 cotscore=-2147483648 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2005200155 X-Spam: Clean X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 malwarescore=0 mlxlogscore=999 adultscore=0 phishscore=0 mlxscore=0 spamscore=0 suspectscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2005200156 Cc: Marcelo Ricardo Leitner , Eric Dumazet , linux-nvme@lists.infradead.org, linux-sctp@vger.kernel.org, target-devel@vger.kernel.org, linux-afs@lists.infradead.org, drbd-dev@lists.linbit.com, linux-cifs@vger.kernel.org, rds-devel@oss.oracle.com, linux-rdma@vger.kernel.org, cluster-devel@redhat.com, Alexey Kuznetsov , ceph-devel@vger.kernel.org, linux-nfs@vger.kernel.org, Neil Horman , Hideaki YOSHIFUJI , netdev@vger.kernel.org, Vlad Yasevich , linux-kernel@vger.kernel.org, Jon Maloy , Ying Xue , ocfs2-devel@oss.oracle.com Subject: [Ocfs2-devel] [PATCH 21/33] ipv4: add ip_sock_set_freebind X-BeenThere: ocfs2-devel@oss.oracle.com X-Mailman-Version: 2.1.9 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: ocfs2-devel-bounces@oss.oracle.com Errors-To: ocfs2-devel-bounces@oss.oracle.com X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9627 signatures=668686 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 mlxscore=0 mlxlogscore=999 adultscore=0 bulkscore=0 suspectscore=0 phishscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2005200157 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9627 signatures=668686 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 lowpriorityscore=0 spamscore=0 mlxlogscore=999 clxscore=1034 priorityscore=1501 cotscore=-2147483648 impostorscore=0 bulkscore=0 adultscore=0 malwarescore=0 phishscore=0 mlxscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2005200157 Add a helper to directly set the IP_FREEBIND sockopt from kernel space without going through a fake uaccess. Signed-off-by: Christoph Hellwig --- drivers/target/iscsi/iscsi_target_login.c | 13 +++---------- include/net/ip.h | 1 + net/ipv4/ip_sockglue.c | 8 ++++++++ 3 files changed, 12 insertions(+), 10 deletions(-) diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_login.c index b561b07a869a0..85748e3388582 100644 --- a/drivers/target/iscsi/iscsi_target_login.c +++ b/drivers/target/iscsi/iscsi_target_login.c @@ -15,6 +15,7 @@ #include #include #include /* TCP_NODELAY */ +#include #include /* ipv6_addr_v4mapped() */ #include #include @@ -855,7 +856,7 @@ int iscsit_setup_np( struct sockaddr_storage *sockaddr) { struct socket *sock = NULL; - int backlog = ISCSIT_TCP_BACKLOG, ret, opt = 0, len; + int backlog = ISCSIT_TCP_BACKLOG, ret, len; switch (np->np_network_transport) { case ISCSI_TCP: @@ -900,15 +901,7 @@ int iscsit_setup_np( if (np->np_network_transport == ISCSI_TCP) tcp_sock_set_nodelay(sock->sk); sock_set_reuseaddr(sock->sk); - - opt = 1; - ret = kernel_setsockopt(sock, IPPROTO_IP, IP_FREEBIND, - (char *)&opt, sizeof(opt)); - if (ret < 0) { - pr_err("kernel_setsockopt() for IP_FREEBIND" - " failed\n"); - goto fail; - } + ip_sock_set_freebind(sock->sk); ret = kernel_bind(sock, (struct sockaddr *)&np->np_sockaddr, len); if (ret < 0) { diff --git a/include/net/ip.h b/include/net/ip.h index 2fc52e26fa88b..5f5d8226b6abc 100644 --- a/include/net/ip.h +++ b/include/net/ip.h @@ -765,6 +765,7 @@ static inline bool inetdev_valid_mtu(unsigned int mtu) return likely(mtu >= IPV4_MIN_MTU); } +void ip_sock_set_freebind(struct sock *sk); void ip_sock_set_tos(struct sock *sk, int val); #endif /* _IP_H */ diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c index 1733ac78c21aa..62e642ab80126 100644 --- a/net/ipv4/ip_sockglue.c +++ b/net/ipv4/ip_sockglue.c @@ -581,6 +581,14 @@ void ip_sock_set_tos(struct sock *sk, int val) } EXPORT_SYMBOL(ip_sock_set_tos); +void ip_sock_set_freebind(struct sock *sk) +{ + lock_sock(sk); + inet_sk(sk)->freebind = true; + release_sock(sk); +} +EXPORT_SYMBOL(ip_sock_set_freebind); + /* * Socket option code for IP. This is the end of the line after any * TCP,UDP etc options on an IP socket.