[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20200520195509.2215098-17-hch@lst.de>
Date: Wed, 20 May 2020 21:54:52 +0200
From: Christoph Hellwig <hch@....de>
To: "David S. Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>
Cc: Eric Dumazet <edumazet@...gle.com>,
Alexey Kuznetsov <kuznet@....inr.ac.ru>,
Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
Vlad Yasevich <vyasevich@...il.com>,
Neil Horman <nhorman@...driver.com>,
Marcelo Ricardo Leitner <marcelo.leitner@...il.com>,
Jon Maloy <jmaloy@...hat.com>,
Ying Xue <ying.xue@...driver.com>, drbd-dev@...ts.linbit.com,
linux-kernel@...r.kernel.org, linux-rdma@...r.kernel.org,
linux-nvme@...ts.infradead.org, target-devel@...r.kernel.org,
linux-afs@...ts.infradead.org, linux-cifs@...r.kernel.org,
cluster-devel@...hat.com, ocfs2-devel@....oracle.com,
netdev@...r.kernel.org, linux-sctp@...r.kernel.org,
ceph-devel@...r.kernel.org, rds-devel@....oracle.com,
linux-nfs@...r.kernel.org
Subject: [PATCH 16/33] tcp: add tcp_sock_set_user_timeout
Add a helper to directly set the TCP_USER_TIMEOUT sockopt from kernel
space without going through a fake uaccess.
Signed-off-by: Christoph Hellwig <hch@....de>
---
fs/ocfs2/cluster/tcp.c | 22 ++--------------------
include/linux/tcp.h | 1 +
net/ipv4/tcp.c | 8 ++++++++
net/sunrpc/xprtsock.c | 3 +--
4 files changed, 12 insertions(+), 22 deletions(-)
diff --git a/fs/ocfs2/cluster/tcp.c b/fs/ocfs2/cluster/tcp.c
index 4c70fe9d19ab2..79a2317194600 100644
--- a/fs/ocfs2/cluster/tcp.c
+++ b/fs/ocfs2/cluster/tcp.c
@@ -1441,14 +1441,6 @@ static void o2net_rx_until_empty(struct work_struct *work)
sc_put(sc);
}
-static int o2net_set_usertimeout(struct socket *sock)
-{
- int user_timeout = O2NET_TCP_USER_TIMEOUT;
-
- return kernel_setsockopt(sock, SOL_TCP, TCP_USER_TIMEOUT,
- (void *)&user_timeout, sizeof(user_timeout));
-}
-
static void o2net_initialize_handshake(void)
{
o2net_hand->o2hb_heartbeat_timeout_ms = cpu_to_be32(
@@ -1629,12 +1621,7 @@ static void o2net_start_connect(struct work_struct *work)
}
tcp_sock_set_nodelay(sc->sc_sock->sk);
-
- ret = o2net_set_usertimeout(sock);
- if (ret) {
- mlog(ML_ERROR, "set TCP_USER_TIMEOUT failed with %d\n", ret);
- goto out;
- }
+ tcp_sock_set_user_timeout(sock->sk, O2NET_TCP_USER_TIMEOUT);
o2net_register_callbacks(sc->sc_sock->sk, sc);
@@ -1821,12 +1808,7 @@ static int o2net_accept_one(struct socket *sock, int *more)
new_sock->sk->sk_allocation = GFP_ATOMIC;
tcp_sock_set_nodelay(new_sock->sk);
-
- ret = o2net_set_usertimeout(new_sock);
- if (ret) {
- mlog(ML_ERROR, "set TCP_USER_TIMEOUT failed with %d\n", ret);
- goto out;
- }
+ tcp_sock_set_user_timeout(new_sock->sk, O2NET_TCP_USER_TIMEOUT);
ret = new_sock->ops->getname(new_sock, (struct sockaddr *) &sin, 1);
if (ret < 0)
diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index 6aa4ae5ebf3d5..de682143efe4d 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -501,5 +501,6 @@ void tcp_sock_set_cork(struct sock *sk, bool on);
void tcp_sock_set_nodelay(struct sock *sk);
void tcp_sock_set_quickack(struct sock *sk, int val);
int tcp_sock_set_syncnt(struct sock *sk, int val);
+void tcp_sock_set_user_timeout(struct sock *sk, u32 val);
#endif /* _LINUX_TCP_H */
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index d2c67ae1da07a..0004bd9ae7b0a 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2893,6 +2893,14 @@ int tcp_sock_set_syncnt(struct sock *sk, int val)
}
EXPORT_SYMBOL(tcp_sock_set_syncnt);
+void tcp_sock_set_user_timeout(struct sock *sk, u32 val)
+{
+ lock_sock(sk);
+ inet_csk(sk)->icsk_user_timeout = val;
+ release_sock(sk);
+}
+EXPORT_SYMBOL(tcp_sock_set_user_timeout);
+
/*
* Socket option code for TCP.
*/
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index 399848c2bcb29..231fd6162f68d 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -2115,8 +2115,7 @@ static void xs_tcp_set_socket_timeouts(struct rpc_xprt *xprt,
(char *)&keepcnt, sizeof(keepcnt));
/* TCP user timeout (see RFC5482) */
- kernel_setsockopt(sock, SOL_TCP, TCP_USER_TIMEOUT,
- (char *)&timeo, sizeof(timeo));
+ tcp_sock_set_user_timeout(sock->sk, timeo);
}
static void xs_tcp_set_connect_timeout(struct rpc_xprt *xprt,
--
2.26.2
Powered by blists - more mailing lists