Bi-directional RPC support means code in svcrdma.ko invokes a bit of
code in xprtrdma.ko, and vice versa. To avoid loader/linker loops,
merge the server and client side modules together into a single
module.
When backchannel capabilities are added, the combined module will
register all needed transport capabilities so that Upper Layer
consumers automatically have everything needed to create a
bi-directional transport connection.
Module aliases are added for backwards compatibility with user
space, which still may expect svcrdma.ko or xprtrdma.ko to be
present.
This commit reverts commit 2e8c12e1b765 ("xprtrdma: add separate
Kconfig options for NFSoRDMA client and server support") and
provides a single CONFIG option for enabling the new module.
Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
---
net/sunrpc/Kconfig | 28 +++++++-----------------
net/sunrpc/Makefile | 3 +--
net/sunrpc/xprtrdma/Makefile | 14 +++++-------
net/sunrpc/xprtrdma/module.c | 46 +++++++++++++++++++++++++++++++++++++++
net/sunrpc/xprtrdma/svc_rdma.c | 8 +------
net/sunrpc/xprtrdma/transport.c | 13 ++---------
net/sunrpc/xprtrdma/xprt_rdma.h | 5 ++++
7 files changed, 69 insertions(+), 48 deletions(-)
create mode 100644 net/sunrpc/xprtrdma/module.c
diff --git a/net/sunrpc/Kconfig b/net/sunrpc/Kconfig
index 9068e72..04ce2c0 100644
--- a/net/sunrpc/Kconfig
+++ b/net/sunrpc/Kconfig
@@ -48,28 +48,16 @@ config SUNRPC_DEBUG
If unsure, say Y.
-config SUNRPC_XPRT_RDMA_CLIENT
- tristate "RPC over RDMA Client Support"
+config SUNRPC_XPRT_RDMA
+ tristate "RPC-over-RDMA transport"
depends on SUNRPC && INFINIBAND && INFINIBAND_ADDR_TRANS
default SUNRPC && INFINIBAND
help
- This option allows the NFS client to support an RDMA-enabled
- transport.
+ This option allows the NFS client and server to use RDMA
+ transports (InfiniBand, iWARP, or RoCE).
- To compile RPC client RDMA transport support as a module,
- choose M here: the module will be called xprtrdma.
+ To compile this support as a module, choose M. The module
+ will be called rpcrdma.ko.
- If unsure, say N.
-
-config SUNRPC_XPRT_RDMA_SERVER
- tristate "RPC over RDMA Server Support"
- depends on SUNRPC && INFINIBAND && INFINIBAND_ADDR_TRANS
- default SUNRPC && INFINIBAND
- help
- This option allows the NFS server to support an RDMA-enabled
- transport.
-
- To compile RPC server RDMA transport support as a module,
- choose M here: the module will be called svcrdma.
-
- If unsure, say N.
+ If unsure, or you know there is no RDMA capability on your
+ hardware platform, say N.
diff --git a/net/sunrpc/Makefile b/net/sunrpc/Makefile
index 1b8e68d..b512fbd 100644
--- a/net/sunrpc/Makefile
+++ b/net/sunrpc/Makefile
@@ -5,8 +5,7 @@
obj-$(CONFIG_SUNRPC) += sunrpc.o
obj-$(CONFIG_SUNRPC_GSS) += auth_gss/
-
-obj-y += xprtrdma/
+obj-$(CONFIG_SUNRPC_XPRT_RDMA) += xprtrdma/
sunrpc-y := clnt.o xprt.o socklib.o xprtsock.o sched.o \
auth.o auth_null.o auth_unix.o auth_generic.o \
diff --git a/net/sunrpc/xprtrdma/Makefile b/net/sunrpc/xprtrdma/Makefile
index 579f72b..48913de 100644
--- a/net/sunrpc/xprtrdma/Makefile
+++ b/net/sunrpc/xprtrdma/Makefile
@@ -1,9 +1,7 @@
-obj-$(CONFIG_SUNRPC_XPRT_RDMA_CLIENT) += xprtrdma.o
+obj-$(CONFIG_SUNRPC_XPRT_RDMA) += rpcrdma.o
-xprtrdma-y := transport.o rpc_rdma.o verbs.o \
- fmr_ops.o frwr_ops.o physical_ops.o
-
-obj-$(CONFIG_SUNRPC_XPRT_RDMA_SERVER) += svcrdma.o
-
-svcrdma-y := svc_rdma.o svc_rdma_transport.o \
- svc_rdma_marshal.o svc_rdma_sendto.o svc_rdma_recvfrom.o
+rpcrdma-y := transport.o rpc_rdma.o verbs.o \
+ fmr_ops.o frwr_ops.o physical_ops.o \
+ svc_rdma.o svc_rdma_transport.o \
+ svc_rdma_marshal.o svc_rdma_sendto.o svc_rdma_recvfrom.o \
+ module.o
diff --git a/net/sunrpc/xprtrdma/module.c b/net/sunrpc/xprtrdma/module.c
new file mode 100644
index 0000000..560712b
--- /dev/null
+++ b/net/sunrpc/xprtrdma/module.c
@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2015 Oracle. All rights reserved.
+ */
+
+/* rpcrdma.ko module initialization
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/sunrpc/svc_rdma.h>
+#include "xprt_rdma.h"
+
+#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
+# define RPCDBG_FACILITY RPCDBG_TRANS
+#endif
+
+MODULE_AUTHOR("Open Grid Computing and Network Appliance, Inc.");
+MODULE_DESCRIPTION("RPC/RDMA Transport");
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_ALIAS("svcrdma");
+MODULE_ALIAS("xprtrdma");
+
+static void __exit rpc_rdma_cleanup(void)
+{
+ xprt_rdma_cleanup();
+ svc_rdma_cleanup();
+}
+
+static int __init rpc_rdma_init(void)
+{
+ int rc;
+
+ rc = svc_rdma_init();
+ if (rc)
+ goto out;
+
+ rc = xprt_rdma_init();
+ if (rc)
+ svc_rdma_cleanup();
+
+out:
+ return rc;
+}
+
+module_init(rpc_rdma_init);
+module_exit(rpc_rdma_cleanup);
diff --git a/net/sunrpc/xprtrdma/svc_rdma.c b/net/sunrpc/xprtrdma/svc_rdma.c
index 7a18ae4..dc7d7a5 100644
--- a/net/sunrpc/xprtrdma/svc_rdma.c
+++ b/net/sunrpc/xprtrdma/svc_rdma.c
@@ -38,8 +38,7 @@
*
* Author: Tom Tucker <tom@xxxxxxxxxxxxxxxxxxxxx>
*/
-#include <linux/module.h>
-#include <linux/init.h>
+
#include <linux/slab.h>
#include <linux/fs.h>
#include <linux/sysctl.h>
@@ -305,8 +304,3 @@ int svc_rdma_init(void)
destroy_workqueue(svc_rdma_wq);
return -ENOMEM;
}
-MODULE_AUTHOR("Tom Tucker <tom@xxxxxxxxxxxxxxxxxxxxx>");
-MODULE_DESCRIPTION("SVC RDMA Transport");
-MODULE_LICENSE("Dual BSD/GPL");
-module_init(svc_rdma_init);
-module_exit(svc_rdma_cleanup);
diff --git a/net/sunrpc/xprtrdma/transport.c b/net/sunrpc/xprtrdma/transport.c
index 54f23b1..436da2c 100644
--- a/net/sunrpc/xprtrdma/transport.c
+++ b/net/sunrpc/xprtrdma/transport.c
@@ -48,7 +48,6 @@
*/
#include <linux/module.h>
-#include <linux/init.h>
#include <linux/slab.h>
#include <linux/seq_file.h>
#include <linux/sunrpc/addr.h>
@@ -59,11 +58,6 @@
# define RPCDBG_FACILITY RPCDBG_TRANS
#endif
-MODULE_LICENSE("Dual BSD/GPL");
-
-MODULE_DESCRIPTION("RPC/RDMA Transport for Linux kernel NFS");
-MODULE_AUTHOR("Network Appliance, Inc.");
-
/*
* tunables
*/
@@ -711,7 +705,7 @@ static struct xprt_class xprt_rdma = {
.setup = xprt_setup_rdma,
};
-static void __exit xprt_rdma_cleanup(void)
+void xprt_rdma_cleanup(void)
{
int rc;
@@ -728,7 +722,7 @@ static void __exit xprt_rdma_cleanup(void)
__func__, rc);
}
-static int __init xprt_rdma_init(void)
+int xprt_rdma_init(void)
{
int rc;
@@ -753,6 +747,3 @@ static int __init xprt_rdma_init(void)
#endif
return 0;
}
-
-module_init(xprt_rdma_init);
-module_exit(xprt_rdma_cleanup);
diff --git a/net/sunrpc/xprtrdma/xprt_rdma.h b/net/sunrpc/xprtrdma/xprt_rdma.h
index e60907b..58163b8 100644
--- a/net/sunrpc/xprtrdma/xprt_rdma.h
+++ b/net/sunrpc/xprtrdma/xprt_rdma.h
@@ -480,6 +480,11 @@ void rpcrdma_reply_handler(struct rpcrdma_rep *);
*/
int rpcrdma_marshal_req(struct rpc_rqst *);
+/* RPC/RDMA module init - xprtrdma/transport.c
+ */
+int xprt_rdma_init(void);
+void xprt_rdma_cleanup(void);
+
/* Temporary NFS request map cache. Created in svc_rdma.c */
extern struct kmem_cache *svc_rdma_map_cachep;
/* WR context cache. Created in svc_rdma.c */
--
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