From: Chuck Lever <chuck.lever@oracle.com>
To: anna.schumaker@netapp.com
Cc: linux-rdma@vger.kernel.org, linux-nfs@vger.kernel.org
Subject: [PATCH v5 05/30] xprtrdma: No qp_event disconnect
Date: Wed, 19 Dec 2018 10:58:35 -0500 [thread overview]
Message-ID: <20181219155835.11602.87412.stgit@manet.1015granger.net> (raw)
In-Reply-To: <20181219155152.11602.18605.stgit@manet.1015granger.net>
After thinking about this more, and auditing other kernel ULP imple-
mentations, I believe that a DISCONNECT cm_event will occur after a
fatal QP event. If that's the case, there's no need for an explicit
disconnect in the QP event handler.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
---
net/sunrpc/xprtrdma/verbs.c | 32 --------------------------------
net/sunrpc/xprtrdma/xprt_rdma.h | 1 -
2 files changed, 33 deletions(-)
diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c
index cff3a5d..9a0a765 100644
--- a/net/sunrpc/xprtrdma/verbs.c
+++ b/net/sunrpc/xprtrdma/verbs.c
@@ -100,25 +100,6 @@ static void rpcrdma_xprt_drain(struct rpcrdma_xprt *r_xprt)
}
/**
- * rpcrdma_disconnect_worker - Force a disconnect
- * @work: endpoint to be disconnected
- *
- * Provider callbacks can possibly run in an IRQ context. This function
- * is invoked in a worker thread to guarantee that disconnect wake-up
- * calls are always done in process context.
- */
-static void
-rpcrdma_disconnect_worker(struct work_struct *work)
-{
- struct rpcrdma_ep *ep = container_of(work, struct rpcrdma_ep,
- rep_disconnect_worker.work);
- struct rpcrdma_xprt *r_xprt =
- container_of(ep, struct rpcrdma_xprt, rx_ep);
-
- xprt_force_disconnect(&r_xprt->rx_xprt);
-}
-
-/**
* rpcrdma_qp_event_handler - Handle one QP event (error notification)
* @event: details of the event
* @context: ep that owns QP where event occurred
@@ -134,15 +115,6 @@ static void rpcrdma_xprt_drain(struct rpcrdma_xprt *r_xprt)
rx_ep);
trace_xprtrdma_qp_event(r_xprt, event);
- pr_err("rpcrdma: %s on device %s connected to %s:%s\n",
- ib_event_msg(event->event), event->device->name,
- rpcrdma_addrstr(r_xprt), rpcrdma_portstr(r_xprt));
-
- if (ep->rep_connected == 1) {
- ep->rep_connected = -EIO;
- schedule_delayed_work(&ep->rep_disconnect_worker, 0);
- wake_up_all(&ep->rep_connect_wait);
- }
}
/**
@@ -571,8 +543,6 @@ static void rpcrdma_xprt_drain(struct rpcrdma_xprt *r_xprt)
cdata->max_requests >> 2);
ep->rep_send_count = ep->rep_send_batch;
init_waitqueue_head(&ep->rep_connect_wait);
- INIT_DELAYED_WORK(&ep->rep_disconnect_worker,
- rpcrdma_disconnect_worker);
ep->rep_receive_count = 0;
sendcq = ib_alloc_cq(ia->ri_device, NULL,
@@ -646,8 +616,6 @@ static void rpcrdma_xprt_drain(struct rpcrdma_xprt *r_xprt)
void
rpcrdma_ep_destroy(struct rpcrdma_ep *ep, struct rpcrdma_ia *ia)
{
- cancel_delayed_work_sync(&ep->rep_disconnect_worker);
-
if (ia->ri_id && ia->ri_id->qp) {
rpcrdma_ep_disconnect(ep, ia);
rdma_destroy_qp(ia->ri_id);
diff --git a/net/sunrpc/xprtrdma/xprt_rdma.h b/net/sunrpc/xprtrdma/xprt_rdma.h
index 3f198cd..7c1b519 100644
--- a/net/sunrpc/xprtrdma/xprt_rdma.h
+++ b/net/sunrpc/xprtrdma/xprt_rdma.h
@@ -101,7 +101,6 @@ struct rpcrdma_ep {
wait_queue_head_t rep_connect_wait;
struct rpcrdma_connect_private rep_cm_private;
struct rdma_conn_param rep_remote_cma;
- struct delayed_work rep_disconnect_worker;
int rep_receive_count;
};
next prev parent reply other threads:[~2018-12-19 15:58 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-19 15:58 [PATCH v5 00/30] NFS/RDMA client for next (4.21) Chuck Lever
2018-12-19 15:58 ` [PATCH v5 01/30] xprtrdma: Yet another double DMA-unmap Chuck Lever
2018-12-19 15:58 ` [PATCH v5 02/30] xprtrdma: Ensure MRs are DMA-unmapped when posting LOCAL_INV fails Chuck Lever
2018-12-19 15:58 ` [PATCH v5 03/30] xprtrdma: Refactor Receive accounting Chuck Lever
2018-12-19 15:58 ` [PATCH v5 04/30] xprtrdma: Replace rpcrdma_receive_wq with a per-xprt workqueue Chuck Lever
2018-12-19 15:58 ` Chuck Lever [this message]
2018-12-19 15:58 ` [PATCH v5 06/30] xprtrdma: Don't wake pending tasks until disconnect is done Chuck Lever
2018-12-19 15:58 ` [PATCH v5 07/30] xprtrdma: Fix ri_max_segs and the result of ro_maxpages Chuck Lever
2018-12-19 15:58 ` [PATCH v5 08/30] xprtrdma: Reduce max_frwr_depth Chuck Lever
2018-12-19 15:58 ` [PATCH v5 09/30] xprtrdma: Remove support for FMR memory registration Chuck Lever
2018-12-19 15:59 ` [PATCH v5 10/30] xprtrdma: Remove rpcrdma_memreg_ops Chuck Lever
2018-12-19 15:59 ` [PATCH v5 11/30] xprtrdma: Plant XID in on-the-wire RDMA offset (FRWR) Chuck Lever
2018-12-19 15:59 ` [PATCH v5 12/30] NFS: Make "port=" mount option optional for RDMA mounts Chuck Lever
2018-12-19 15:59 ` [PATCH v5 13/30] xprtrdma: Recognize XDRBUF_SPARSE_PAGES Chuck Lever
2018-12-19 15:59 ` [PATCH v5 14/30] xprtrdma: Remove request_module from backchannel Chuck Lever
2018-12-19 15:59 ` [PATCH v5 15/30] xprtrdma: Expose transport header errors Chuck Lever
2018-12-19 15:59 ` [PATCH v5 16/30] xprtrdma: Simplify locking that protects the rl_allreqs list Chuck Lever
2018-12-19 15:59 ` [PATCH v5 17/30] xprtrdma: Cull dprintk() call sites Chuck Lever
2018-12-19 15:59 ` [PATCH v5 18/30] xprtrdma: Remove unused fields from rpcrdma_ia Chuck Lever
2018-12-19 15:59 ` [PATCH v5 19/30] xprtrdma: Clean up of xprtrdma chunk trace points Chuck Lever
2018-12-19 15:59 ` [PATCH v5 20/30] xprtrdma: Relocate the xprtrdma_mr_map " Chuck Lever
2018-12-19 16:00 ` [PATCH v5 21/30] xprtrdma: Add trace points for calls to transport switch methods Chuck Lever
2018-12-19 16:00 ` [PATCH v5 22/30] xprtrdma: Trace mapping, alloc, and dereg failures Chuck Lever
2018-12-19 16:00 ` [PATCH v5 23/30] NFS: Fix NFSv4 symbolic trace point output Chuck Lever
2018-12-19 16:00 ` [PATCH v5 24/30] SUNRPC: Simplify defining common RPC trace events Chuck Lever
2018-12-19 16:00 ` [PATCH v5 25/30] SUNRPC: Fix some kernel doc complaints Chuck Lever
2018-12-19 16:00 ` [PATCH v5 26/30] xprtrdma: Update comments in frwr_op_send Chuck Lever
2018-12-19 16:00 ` [PATCH v5 27/30] xprtrdma: Replace outdated comment for rpcrdma_ep_post Chuck Lever
2018-12-19 16:00 ` [PATCH v5 28/30] xprtrdma: Add documenting comment for rpcrdma_buffer_destroy Chuck Lever
2018-12-19 16:00 ` [PATCH v5 29/30] xprtrdma: Clarify comments in rpcrdma_ia_remove Chuck Lever
2018-12-19 16:00 ` [PATCH v5 30/30] xprtrdma: Don't leak freed MRs Chuck Lever
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