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SUNRPC: Add a sysctl to control the duration of the socket linger timeout 

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
hifive-unleashed-5.1
Trond Myklebust 2009-03-11 14:38:03 -04:00
parent 7d1e8255cf
commit 25fe6142a5
1 changed files with 11 additions and 2 deletions
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13
net/sunrpc/xprtsock.c
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@ -50,6 +50,7 @@ unsigned int xprt_min_resvport = RPC_DEF_MIN_RESVPORT;
unsigned int xprt_max_resvport = RPC_DEF_MAX_RESVPORT;
#define XS_TCP_LINGER_TO (15U * HZ)
static unsigned int xs_tcp_fin_timeout __read_mostly = XS_TCP_LINGER_TO;
/*
* We can register our own files under /proc/sys/sunrpc by
@ -118,6 +119,14 @@ static ctl_table xs_tunables_table[] = {
.extra1 = &xprt_min_resvport_limit,
.extra2 = &xprt_max_resvport_limit
},
{
.procname = "tcp_fin_timeout",
.data = &xs_tcp_fin_timeout,
.maxlen = sizeof(xs_tcp_fin_timeout),
.mode = 0644,
.proc_handler = &proc_dointvec_jiffies,
.strategy = sysctl_jiffies
},
{
.ctl_name = 0,
},
@ -1222,7 +1231,7 @@ static void xs_tcp_state_change(struct sock *sk)
clear_bit(XPRT_CONNECTED, &xprt->state);
clear_bit(XPRT_CLOSE_WAIT, &xprt->state);
smp_mb__after_clear_bit();
xs_tcp_schedule_linger_timeout(xprt, XS_TCP_LINGER_TO);
xs_tcp_schedule_linger_timeout(xprt, xs_tcp_fin_timeout);
break;
case TCP_CLOSE_WAIT:
/* The server initiated a shutdown of the socket */
@ -1239,7 +1248,7 @@ static void xs_tcp_state_change(struct sock *sk)
break;
case TCP_LAST_ACK:
set_bit(XPRT_CLOSING, &xprt->state);
xs_tcp_schedule_linger_timeout(xprt, XS_TCP_LINGER_TO);
xs_tcp_schedule_linger_timeout(xprt, xs_tcp_fin_timeout);
smp_mb__before_clear_bit();
clear_bit(XPRT_CONNECTED, &xprt->state);
smp_mb__after_clear_bit();