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authorChristoph Hellwig <hch@lst.de>2020-05-28 08:12:22 +0300
committerDavid S. Miller <davem@davemloft.net>2020-05-28 21:11:45 +0300
commitc488aeadcbd002a992593e6090d54e8ac27c4310 (patch)
tree88fa0208206176037a7bd7fba3784e92c00e6988
parent557eadfcc5ee8f8fa98a795e05ed21db58a65db5 (diff)
downloadlinux-c488aeadcbd002a992593e6090d54e8ac27c4310.tar.xz
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@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--fs/ocfs2/cluster/tcp.c22
-rw-r--r--include/linux/tcp.h1
-rw-r--r--net/ipv4/tcp.c8
-rw-r--r--net/sunrpc/xprtsock.c3
4 files changed, 12 insertions, 22 deletions
diff --git a/fs/ocfs2/cluster/tcp.c b/fs/ocfs2/cluster/tcp.c
index 4c70fe9d19ab..79a231719460 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 6aa4ae5ebf3d..de682143efe4 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 d2c67ae1da07..0004bd9ae7b0 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 399848c2bcb2..231fd6162f68 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,