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From: trondmy@kernel.org
To: linux-nfs@vger.kernel.org
Subject: [PATCH v3 03/11] SUNRPC: Add a helper to return the transport identifier given a netid
Date: Tue, 10 Nov 2020 18:18:58 -0500
Message-ID: <20201110231906.863446-4-trondmy@kernel.org> (raw)
In-Reply-To: <20201110231906.863446-3-trondmy@kernel.org>

From: Trond Myklebust <trond.myklebust@hammerspace.com>

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
---
 include/linux/sunrpc/xprt.h |  1 +
 net/sunrpc/xprt.c           | 25 +++++++++++++++++++++----
 2 files changed, 22 insertions(+), 4 deletions(-)

diff --git a/include/linux/sunrpc/xprt.h b/include/linux/sunrpc/xprt.h
index 3ac5037d1c3d..f7b75c72f80e 100644
--- a/include/linux/sunrpc/xprt.h
+++ b/include/linux/sunrpc/xprt.h
@@ -386,6 +386,7 @@ xprt_disable_swap(struct rpc_xprt *xprt)
 int			xprt_register_transport(struct xprt_class *type);
 int			xprt_unregister_transport(struct xprt_class *type);
 int			xprt_load_transport(const char *);
+int			xprt_find_transport_ident(const char *);
 void			xprt_wait_for_reply_request_def(struct rpc_task *task);
 void			xprt_wait_for_reply_request_rtt(struct rpc_task *task);
 void			xprt_wake_pending_tasks(struct rpc_xprt *xprt, int status);
diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c
index 29de33ea53d6..1016265d5e53 100644
--- a/net/sunrpc/xprt.c
+++ b/net/sunrpc/xprt.c
@@ -219,22 +219,39 @@ xprt_class_find_by_netid(const char *netid)
 }
 
 /**
- * xprt_load_transport - load a transport implementation
+ * xprt_find_transport_ident - convert a netid into a transport identifier
  * @netid: transport to load
  *
  * Returns:
- * 0:		transport successfully loaded
+ * > 0:		transport identifier
  * -ENOENT:	transport module not available
  */
-int xprt_load_transport(const char *netid)
+int xprt_find_transport_ident(const char *netid)
 {
 	const struct xprt_class *t;
+	int ret;
 
 	t = xprt_class_find_by_netid(netid);
 	if (!t)
 		return -ENOENT;
+	ret = t->ident;
 	xprt_class_release(t);
-	return 0;
+	return ret;
+}
+EXPORT_SYMBOL_GPL(xprt_find_transport_ident);
+
+/**
+ * xprt_load_transport - load a transport implementation
+ * @netid: transport to load
+ *
+ * Returns:
+ * 0:		transport successfully loaded
+ * -ENOENT:	transport module not available
+ */
+int xprt_load_transport(const char *netid)
+{
+	int ret = xprt_find_transport_ident(netid);
+	return ret < 0 ? ret : 0;
 }
 EXPORT_SYMBOL_GPL(xprt_load_transport);
 
-- 
2.28.0


  reply index

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-10 23:18 [PATCH v3 00/11] Add RDMA support to the pNFS file+flexfiles data channels trondmy
2020-11-10 23:18 ` [PATCH v3 01/11] SUNRPC: xprt_load_transport() needs to support the netid "rdma6" trondmy
2020-11-10 23:18   ` [PATCH v3 02/11] SUNRPC: Close a race with transport setup and module put trondmy
2020-11-10 23:18     ` trondmy [this message]
2020-11-10 23:18       ` [PATCH v3 04/11] NFS: Switch mount code to use xprt_find_transport_ident() trondmy
2020-11-10 23:19         ` [PATCH v3 05/11] SUNRPC: Remove unused function xprt_load_transport() trondmy
2020-11-10 23:19           ` [PATCH v3 06/11] NFSv4/pNFS: Use connections to a DS that are all of the same protocol family trondmy
2020-11-10 23:19             ` [PATCH v3 07/11] pNFS: Add helpers for allocation/free of struct nfs4_pnfs_ds_addr trondmy
2020-11-10 23:19               ` [PATCH v3 08/11] NFSv4/pNFS: Store the transport type in " trondmy
2020-11-10 23:19                 ` [PATCH v3 09/11] pNFS/flexfiles: Fix up layoutstats reporting for non-TCP transports trondmy
2020-11-10 23:19                   ` [PATCH v3 10/11] SUNRPC: Fix up open coded kmemdup_nul() trondmy
2020-11-10 23:19                     ` [PATCH v3 11/11] pNFS: Clean up open coded xdr string decoding trondmy
2020-11-10 23:42 ` [PATCH v3 00/11] Add RDMA support to the pNFS file+flexfiles data channels Trond Myklebust
2020-11-13 12:48   ` Mkrtchyan, Tigran
2020-11-13 21:30     ` Mkrtchyan, Tigran
2020-11-13 22:45       ` Trond Myklebust
2020-11-13 23:46         ` Mkrtchyan, Tigran
2020-11-14 14:29           ` Trond Myklebust
2020-11-16 20:55             ` Mkrtchyan, Tigran
2020-11-17 14:50               ` Mkrtchyan, Tigran
2020-11-26 17:17                 ` Mkrtchyan, Tigran
2020-12-01 10:59                   ` Mkrtchyan, Tigran
2020-12-01 14:44                     ` Mkrtchyan, Tigran

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