From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Date: Thu, 28 May 2020 07:12:12 +0200 Subject: [Ocfs2-devel] [PATCH 04/28] net: add sock_set_sndtimeo In-Reply-To: <20200528051236.620353-1-hch@lst.de> References: <20200528051236.620353-1-hch@lst.de> Message-ID: <20200528051236.620353-5-hch@lst.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: "David S. Miller" , Jakub Kicinski Cc: Eric Dumazet , Alexey Kuznetsov , Hideaki YOSHIFUJI , Jon Maloy , Ying Xue , drbd-dev@lists.linbit.com, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, linux-nvme@lists.infradead.org, target-devel@vger.kernel.org, linux-afs@lists.infradead.org, linux-cifs@vger.kernel.org, cluster-devel@redhat.com, ocfs2-devel@oss.oracle.com, netdev@vger.kernel.org, ceph-devel@vger.kernel.org, rds-devel@oss.oracle.com, linux-nfs@vger.kernel.org, tipc-discussion@lists.sourceforge.net Add a helper to directly set the SO_SNDTIMEO_NEW sockopt from kernel space without going through a fake uaccess. The interface is simplified to only pass the seconds value, as that is the only thing needed at the moment. Signed-off-by: Christoph Hellwig --- fs/dlm/lowcomms.c | 8 ++------ include/net/sock.h | 1 + net/core/sock.c | 11 +++++++++++ 3 files changed, 14 insertions(+), 6 deletions(-) diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c index b801e77e3e596..b4d491122814b 100644 --- a/fs/dlm/lowcomms.c +++ b/fs/dlm/lowcomms.c @@ -1035,7 +1035,6 @@ static void sctp_connect_to_sock(struct connection *con) int result; int addr_len; struct socket *sock; - struct __kernel_sock_timeval tv = { .tv_sec = 5, .tv_usec = 0 }; if (con->nodeid == 0) { log_print("attempt to connect sock 0 foiled"); @@ -1087,13 +1086,10 @@ static void sctp_connect_to_sock(struct connection *con) * since O_NONBLOCK argument in connect() function does not work here, * then, we should restore the default value of this attribute. */ - kernel_setsockopt(sock, SOL_SOCKET, SO_SNDTIMEO_NEW, (char *)&tv, - sizeof(tv)); + sock_set_sndtimeo(sock->sk, 5); result = sock->ops->connect(sock, (struct sockaddr *)&daddr, addr_len, 0); - memset(&tv, 0, sizeof(tv)); - kernel_setsockopt(sock, SOL_SOCKET, SO_SNDTIMEO_NEW, (char *)&tv, - sizeof(tv)); + sock_set_sndtimeo(sock->sk, 0); if (result == -EINPROGRESS) result = 0; diff --git a/include/net/sock.h b/include/net/sock.h index a3a43141a4be2..9a7b9e98685ac 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -2691,5 +2691,6 @@ void sock_def_readable(struct sock *sk); void sock_no_linger(struct sock *sk); void sock_set_priority(struct sock *sk, u32 priority); void sock_set_reuseaddr(struct sock *sk); +void sock_set_sndtimeo(struct sock *sk, s64 secs); #endif /* _SOCK_H */ diff --git a/net/core/sock.c b/net/core/sock.c index ceda1a9248b3e..d3b1d61e4f768 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -737,6 +737,17 @@ void sock_set_priority(struct sock *sk, u32 priority) } EXPORT_SYMBOL(sock_set_priority); +void sock_set_sndtimeo(struct sock *sk, s64 secs) +{ + lock_sock(sk); + if (secs && secs < MAX_SCHEDULE_TIMEOUT / HZ - 1) + sk->sk_sndtimeo = secs * HZ; + else + sk->sk_sndtimeo = MAX_SCHEDULE_TIMEOUT; + release_sock(sk); +} +EXPORT_SYMBOL(sock_set_sndtimeo); + /* * This is meant for all protocols to use and covers goings on * at the socket level. Everything here is generic. -- 2.26.2