diff options
| author | Trond Myklebust <trond.myklebust@primarydata.com> | 2016-08-04 00:08:45 -0400 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2016-08-05 14:12:09 -0400 |
| commit | 3851f1cdb2b8d507b10395fc110d4c37d6121285 (patch) | |
| tree | 295be3dd6dcc3874c34a6b6a86fbdb76dbfa98de /net | |
| parent | 02910177aede34d6f49e2dc14b1c5c6cd468d94f (diff) | |
| download | linux-3851f1cdb2b8d507b10395fc110d4c37d6121285.tar.bz2 | |
SUNRPC: Limit the reconnect backoff timer to the max RPC message timeout
...and ensure that we propagate it to new transports on the same
client.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/sunrpc/clnt.c | 3 | ||||
| -rw-r--r-- | net/sunrpc/xprtsock.c | 18 |
2 files changed, 15 insertions, 6 deletions
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index cb49898a5a58..faac5472d14d 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -2638,6 +2638,7 @@ int rpc_clnt_add_xprt(struct rpc_clnt *clnt, { struct rpc_xprt_switch *xps; struct rpc_xprt *xprt; + unsigned long reconnect_timeout; unsigned char resvport; int ret = 0; @@ -2649,6 +2650,7 @@ int rpc_clnt_add_xprt(struct rpc_clnt *clnt, return -EAGAIN; } resvport = xprt->resvport; + reconnect_timeout = xprt->max_reconnect_timeout; rcu_read_unlock(); xprt = xprt_create_transport(xprtargs); @@ -2657,6 +2659,7 @@ int rpc_clnt_add_xprt(struct rpc_clnt *clnt, goto out_put_switch; } xprt->resvport = resvport; + xprt->max_reconnect_timeout = reconnect_timeout; rpc_xprt_switch_set_roundrobin(xps); if (setup) { diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c index 04b0c4190dd7..8ede3bc52481 100644 --- a/net/sunrpc/xprtsock.c +++ b/net/sunrpc/xprtsock.c @@ -177,7 +177,6 @@ static struct ctl_table sunrpc_table[] = { * increase over time if the server is down or not responding. */ #define XS_TCP_INIT_REEST_TO (3U * HZ) -#define XS_TCP_MAX_REEST_TO (5U * 60 * HZ) /* * TCP idle timeout; client drops the transport socket if it is idle @@ -2396,6 +2395,15 @@ static unsigned long xs_reconnect_delay(const struct rpc_xprt *xprt) return 0; } +static void xs_reconnect_backoff(struct rpc_xprt *xprt) +{ + xprt->reestablish_timeout <<= 1; + if (xprt->reestablish_timeout > xprt->max_reconnect_timeout) + xprt->reestablish_timeout = xprt->max_reconnect_timeout; + if (xprt->reestablish_timeout < XS_TCP_INIT_REEST_TO) + xprt->reestablish_timeout = XS_TCP_INIT_REEST_TO; +} + /** * xs_connect - connect a socket to a remote endpoint * @xprt: pointer to transport structure @@ -2426,12 +2434,8 @@ static void xs_connect(struct rpc_xprt *xprt, struct rpc_task *task) xs_reset_transport(transport); delay = xs_reconnect_delay(xprt); + xs_reconnect_backoff(xprt); - xprt->reestablish_timeout <<= 1; - if (xprt->reestablish_timeout < XS_TCP_INIT_REEST_TO) - xprt->reestablish_timeout = XS_TCP_INIT_REEST_TO; - if (xprt->reestablish_timeout > XS_TCP_MAX_REEST_TO) - xprt->reestablish_timeout = XS_TCP_MAX_REEST_TO; } else dprintk("RPC: xs_connect scheduled xprt %p\n", xprt); @@ -2989,6 +2993,8 @@ static struct rpc_xprt *xs_setup_tcp(struct xprt_create *args) xprt->ops = &xs_tcp_ops; xprt->timeout = &xs_tcp_default_timeout; + xprt->max_reconnect_timeout = xprt->timeout->to_maxval; + INIT_WORK(&transport->recv_worker, xs_tcp_data_receive_workfn); INIT_DELAYED_WORK(&transport->connect_worker, xs_tcp_setup_socket); |