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authorTrond Myklebust <trond.myklebust@primarydata.com>2015-06-20 15:31:54 -0400
committerTrond Myklebust <trond.myklebust@primarydata.com>2015-06-20 15:31:54 -0400
commit775f06ab49f5f9e2f6bca9292ef57efa868a0f67 (patch)
tree2196da83dff602811963b0883273c670ea602d24 /net/sunrpc
parent4876cc779ff525b9c2376d8076edf47815e71f2c (diff)
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SUNRPC: Set the TCP user timeout option on client sockets
Use the TCP_USER_TIMEOUT socket option to advertise to the server how long we will keep the connection open if there is unacknowledged data. See RFC5482. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'net/sunrpc')
-rw-r--r--net/sunrpc/xprtsock.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index ee0715dfc3c7..ee359fc7af16 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -2117,6 +2117,7 @@ static int xs_tcp_finish_connecting(struct rpc_xprt *xprt, struct socket *sock)
unsigned int keepidle = xprt->timeout->to_initval / HZ;
unsigned int keepcnt = xprt->timeout->to_retries + 1;
unsigned int opt_on = 1;
+ unsigned int timeo;
/* TCP Keepalive options */
kernel_setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE,
@@ -2128,6 +2129,12 @@ static int xs_tcp_finish_connecting(struct rpc_xprt *xprt, struct socket *sock)
kernel_setsockopt(sock, SOL_TCP, TCP_KEEPCNT,
(char *)&keepcnt, sizeof(keepcnt));
+ /* TCP user timeout (see RFC5482) */
+ timeo = jiffies_to_msecs(xprt->timeout->to_initval) *
+ (xprt->timeout->to_retries + 1);
+ kernel_setsockopt(sock, SOL_TCP, TCP_USER_TIMEOUT,
+ (char *)&timeo, sizeof(timeo));
+
write_lock_bh(&sk->sk_callback_lock);
xs_save_old_callbacks(transport, sk);