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authorTom Talpey <talpey@netapp.com>2008-10-10 11:32:34 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2008-10-10 15:15:02 -0400
commit08ca0dce1eafa419059ac4cad9ed522af7052526 (patch)
tree76724d885bcfc89db261f119a6f38a8cbb1a6240 /net/sunrpc/xprtrdma
parentb3cd8d45a764e6edb06e7bd386faf99a879569b8 (diff)
downloadop-kernel-dev-08ca0dce1eafa419059ac4cad9ed522af7052526.zip
op-kernel-dev-08ca0dce1eafa419059ac4cad9ed522af7052526.tar.gz
RPC/RDMA: correct the reconnect timer backoff
The RPC/RDMA code had a constant 5-second reconnect backoff, and always performed it, even when re-establishing a connection to a server after the RPC layer closed it due to being idle. Make it an geometric backoff (up to 30 seconds), and don't delay idle reconnect. Signed-off-by: Tom Talpey <talpey@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'net/sunrpc/xprtrdma')
-rw-r--r--net/sunrpc/xprtrdma/transport.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/net/sunrpc/xprtrdma/transport.c b/net/sunrpc/xprtrdma/transport.c
index c2da680..9839c3d 100644
--- a/net/sunrpc/xprtrdma/transport.c
+++ b/net/sunrpc/xprtrdma/transport.c
@@ -463,6 +463,8 @@ xprt_rdma_close(struct rpc_xprt *xprt)
struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt);
dprintk("RPC: %s: closing\n", __func__);
+ if (r_xprt->rx_ep.rep_connected > 0)
+ xprt->reestablish_timeout = 0;
xprt_disconnect_done(xprt);
(void) rpcrdma_ep_disconnect(&r_xprt->rx_ep, &r_xprt->rx_ia);
}
@@ -490,6 +492,11 @@ xprt_rdma_connect(struct rpc_task *task)
/* Reconnect */
schedule_delayed_work(&r_xprt->rdma_connect,
xprt->reestablish_timeout);
+ xprt->reestablish_timeout <<= 1;
+ if (xprt->reestablish_timeout > (30 * HZ))
+ xprt->reestablish_timeout = (30 * HZ);
+ else if (xprt->reestablish_timeout < (5 * HZ))
+ xprt->reestablish_timeout = (5 * HZ);
} else {
schedule_delayed_work(&r_xprt->rdma_connect, 0);
if (!RPC_IS_ASYNC(task))
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