From: Chuck Lever <chuck.lever@oracle.com>
To: linux-rdma@vger.kernel.org, linux-nfs@vger.kernel.org
Subject: [PATCH v1 05/11] xprtrdma: Allocate Protection Domain in rpcrdma_ep_create()
Date: Fri, 21 Feb 2020 17:00:33 -0500 [thread overview]
Message-ID: <20200221220033.2072.22880.stgit@manet.1015granger.net> (raw)
In-Reply-To: <20200221214906.2072.32572.stgit@manet.1015granger.net>
Make a Protection Domain (PD) a per-connection resource rather than
a per-transport resource. In other words, when the connection
terminates, the PD is destroyed.
Thus there is one less HW resource that remains allocated to a
transport after a connection is closed.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
---
net/sunrpc/xprtrdma/verbs.c | 26 ++++++++++----------------
1 file changed, 10 insertions(+), 16 deletions(-)
diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c
index f361213a8157..36fe7baea014 100644
--- a/net/sunrpc/xprtrdma/verbs.c
+++ b/net/sunrpc/xprtrdma/verbs.c
@@ -363,14 +363,6 @@ static void rpcrdma_update_cm_private(struct rpcrdma_xprt *r_xprt,
rc = PTR_ERR(ia->ri_id);
goto out_err;
}
-
- ia->ri_pd = ib_alloc_pd(ia->ri_id->device, 0);
- if (IS_ERR(ia->ri_pd)) {
- rc = PTR_ERR(ia->ri_pd);
- pr_err("rpcrdma: ib_alloc_pd() returned %d\n", rc);
- goto out_err;
- }
-
return 0;
out_err:
@@ -403,9 +395,6 @@ static void rpcrdma_update_cm_private(struct rpcrdma_xprt *r_xprt,
rpcrdma_ep_destroy(r_xprt);
- ib_dealloc_pd(ia->ri_pd);
- ia->ri_pd = NULL;
-
/* Allow waiters to continue */
complete(&ia->ri_remove_done);
@@ -423,11 +412,6 @@ static void rpcrdma_update_cm_private(struct rpcrdma_xprt *r_xprt,
if (ia->ri_id && !IS_ERR(ia->ri_id))
rdma_destroy_id(ia->ri_id);
ia->ri_id = NULL;
-
- /* If the pd is still busy, xprtrdma missed freeing a resource */
- if (ia->ri_pd && !IS_ERR(ia->ri_pd))
- ib_dealloc_pd(ia->ri_pd);
- ia->ri_pd = NULL;
}
static int rpcrdma_ep_create(struct rpcrdma_xprt *r_xprt,
@@ -514,6 +498,12 @@ static int rpcrdma_ep_create(struct rpcrdma_xprt *r_xprt,
ep->rep_remote_cma.flow_control = 0;
ep->rep_remote_cma.rnr_retry_count = 0;
+ ia->ri_pd = ib_alloc_pd(id->device, 0);
+ if (IS_ERR(ia->ri_pd)) {
+ rc = PTR_ERR(ia->ri_pd);
+ goto out_destroy;
+ }
+
rc = rdma_create_qp(id, ia->ri_pd, &ep->rep_attr);
if (rc)
goto out_destroy;
@@ -540,6 +530,10 @@ static void rpcrdma_ep_destroy(struct rpcrdma_xprt *r_xprt)
if (ep->rep_attr.send_cq)
ib_free_cq(ep->rep_attr.send_cq);
ep->rep_attr.send_cq = NULL;
+
+ if (ia->ri_pd)
+ ib_dealloc_pd(ia->ri_pd);
+ ia->ri_pd = NULL;
}
/* Re-establish a connection after a device removal event.
next prev parent reply other threads:[~2020-02-21 22:00 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-21 22:00 [PATCH v1 00/11] NFS/RDMA client side connection overhaul Chuck Lever
2020-02-21 22:00 ` [PATCH v1 01/11] xprtrdma: Invoke rpcrdma_ep_create() in the connect worker Chuck Lever
2020-02-21 22:00 ` [PATCH v1 02/11] xprtrdma: Refactor frwr_init_mr() Chuck Lever
2020-02-21 22:00 ` [PATCH v1 03/11] xprtrdma: Clean up the post_send path Chuck Lever
2020-02-21 22:00 ` [PATCH v1 04/11] xprtrdma: Refactor rpcrdma_ep_connect() and rpcrdma_ep_disconnect() Chuck Lever
2020-02-21 22:00 ` Chuck Lever [this message]
2020-03-01 18:11 ` [PATCH v1 05/11] xprtrdma: Allocate Protection Domain in rpcrdma_ep_create() Tom Talpey
2020-03-01 18:29 ` Chuck Lever
2020-03-01 18:38 ` Tom Talpey
2020-02-21 22:00 ` [PATCH v1 06/11] xprtrdma: Invoke rpcrdma_ia_open in the connect worker Chuck Lever
2020-02-21 22:00 ` [PATCH v1 07/11] xprtrdma: Remove rpcrdma_ia::ri_flags Chuck Lever
2020-02-21 22:00 ` [PATCH v1 08/11] xprtrdma: Disconnect on flushed completion Chuck Lever
2020-02-21 22:00 ` [PATCH v1 09/11] xprtrdma: Merge struct rpcrdma_ia into struct rpcrdma_ep Chuck Lever
2020-02-21 22:01 ` [PATCH v1 10/11] xprtrdma: Extract sockaddr from struct rdma_cm_id Chuck Lever
2020-02-24 16:15 ` Anna Schumaker
2020-02-24 16:18 ` Chuck Lever
2020-02-24 16:23 ` Anna Schumaker
2020-02-21 22:01 ` [PATCH v1 11/11] xprtrdma: kmalloc rpcrdma_ep separate from rpcrdma_xprt Chuck Lever
2020-03-01 18:09 ` [PATCH v1 00/11] NFS/RDMA client side connection overhaul Tom Talpey
2020-03-01 18:12 ` Chuck Lever
2020-03-11 15:27 ` Chuck Lever
2020-03-11 17:16 ` Schumaker, Anna
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