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Miller" , Jakub Kicinski Date: Wed, 13 May 2020 08:26:43 +0200 Message-Id: <20200513062649.2100053-29-hch@lst.de> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200513062649.2100053-1-hch@lst.de> References: <20200513062649.2100053-1-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=9619 signatures=668687 X-Proofpoint-Spam-Details: rule=tap_notspam policy=tap score=0 suspectscore=0 phishscore=0 mlxscore=0 clxscore=225 bulkscore=0 impostorscore=0 priorityscore=156 mlxlogscore=931 adultscore=0 cotscore=-2147483648 lowpriorityscore=0 malwarescore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2005130057 X-Spam: Clean X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 bulkscore=0 malwarescore=0 phishscore=0 adultscore=0 suspectscore=0 mlxscore=0 mlxlogscore=999 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2005130058 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 , linux-block@vger.kernel.org, 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 28/33] sctp: add sctp_sock_set_nodelay 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=9619 signatures=668687 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxlogscore=999 adultscore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 suspectscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2005130058 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9619 signatures=668687 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 cotscore=-2147483648 bulkscore=0 phishscore=0 adultscore=0 mlxlogscore=999 lowpriorityscore=0 impostorscore=0 spamscore=0 malwarescore=0 priorityscore=1501 mlxscore=0 suspectscore=0 clxscore=1034 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2005130058 Add a helper to directly set the SCTP_NODELAY sockopt from kernel space without going through a fake uaccess. Signed-off-by: Christoph Hellwig --- fs/dlm/lowcomms.c | 10 ++-------- include/net/sctp/sctp.h | 1 + net/sctp/socket.c | 8 ++++++++ 3 files changed, 11 insertions(+), 8 deletions(-) diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c index e4939d770df53..6fa45365666a8 100644 --- a/fs/dlm/lowcomms.c +++ b/fs/dlm/lowcomms.c @@ -1034,7 +1034,6 @@ static int sctp_bind_addrs(struct connection *con, uint16_t port) static void sctp_connect_to_sock(struct connection *con) { struct sockaddr_storage daddr; - int one = 1; int result; int addr_len; struct socket *sock; @@ -1081,8 +1080,7 @@ static void sctp_connect_to_sock(struct connection *con) log_print("connecting to %d", con->nodeid); /* Turn off Nagle's algorithm */ - kernel_setsockopt(sock, SOL_SCTP, SCTP_NODELAY, (char *)&one, - sizeof(one)); + sctp_sock_set_nodelay(sock->sk, true); /* * Make sock->ops->connect() function return in specified time, @@ -1296,7 +1294,6 @@ static int sctp_listen_for_all(void) struct socket *sock = NULL; int result = -EINVAL; struct connection *con = nodeid2con(0, GFP_NOFS); - int one = 1; if (!con) return -ENOMEM; @@ -1311,10 +1308,7 @@ static int sctp_listen_for_all(void) } sock_set_rcvbuf(sock->sk, NEEDED_RMEM); - result = kernel_setsockopt(sock, SOL_SCTP, SCTP_NODELAY, (char *)&one, - sizeof(one)); - if (result < 0) - log_print("Could not set SCTP NODELAY error %d\n", result); + sctp_sock_set_nodelay(sock->sk, true); write_lock_bh(&sock->sk->sk_callback_lock); /* Init con struct */ diff --git a/include/net/sctp/sctp.h b/include/net/sctp/sctp.h index f702b14d768ba..b505fa082f254 100644 --- a/include/net/sctp/sctp.h +++ b/include/net/sctp/sctp.h @@ -617,5 +617,6 @@ static inline bool sctp_newsk_ready(const struct sock *sk) int sctp_setsockopt_bindx(struct sock *sk, struct sockaddr *kaddrs, int addrs_size, int op); +void sctp_sock_set_nodelay(struct sock *sk, bool val); #endif /* __net_sctp_h__ */ diff --git a/net/sctp/socket.c b/net/sctp/socket.c index 30c981d9f6158..64c395f7a86d5 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -3066,6 +3066,14 @@ static int sctp_setsockopt_nodelay(struct sock *sk, char __user *optval, return 0; } +void sctp_sock_set_nodelay(struct sock *sk, bool val) +{ + lock_sock(sk); + sctp_sk(sk)->nodelay = val; + release_sock(sk); +} +EXPORT_SYMBOL(sctp_sock_set_nodelay); + /* * * 7.1.1 SCTP_RTOINFO