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SUNRPC: Clean up bc_send()

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Clean up: Merge bc_send() into bc_svc_process().

Note: even thought this touches svc.c, it is a client-side change.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This commit is contained in:
Chuck Lever 2015-05-11 14:04:50 -04:00 committed by Trond Myklebust
parent 1193d58f75
commit 632dda833e
4 changed files with 26 additions and 73 deletions
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1
include/linux/sunrpc/bc_xprt.h
View file

@ -37,7 +37,6 @@ void xprt_complete_bc_request(struct rpc_rqst *req, uint32_t copied);
void xprt_free_bc_request(struct rpc_rqst *req);
int xprt_setup_backchannel(struct rpc_xprt *, unsigned int min_reqs);
void xprt_destroy_backchannel(struct rpc_xprt *, unsigned int max_reqs);
int bc_send(struct rpc_rqst *req);
/*
* Determine if a shared backchannel is in use

2
net/sunrpc/Makefile
View file

@ -15,6 +15,6 @@ sunrpc-y := clnt.o xprt.o socklib.o xprtsock.o sched.o \
sunrpc_syms.o cache.o rpc_pipe.o \
svc_xprt.o
sunrpc-$(CONFIG_SUNRPC_DEBUG) += debugfs.o
sunrpc-$(CONFIG_SUNRPC_BACKCHANNEL) += backchannel_rqst.o bc_svc.o
sunrpc-$(CONFIG_SUNRPC_BACKCHANNEL) += backchannel_rqst.o
sunrpc-$(CONFIG_PROC_FS) += stats.o
sunrpc-$(CONFIG_SYSCTL) += sysctl.o

63
net/sunrpc/bc_svc.c
View file

@ -1,63 +0,0 @@
/******************************************************************************
(c) 2007 Network Appliance, Inc. All Rights Reserved.
(c) 2009 NetApp. All Rights Reserved.
NetApp provides this source code under the GPL v2 License.
The GPL v2 license is available at
http://opensource.org/licenses/gpl-license.php.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
******************************************************************************/
/*
* The NFSv4.1 callback service helper routines.
* They implement the transport level processing required to send the
* reply over an existing open connection previously established by the client.
*/
#include <linux/module.h>
#include <linux/sunrpc/xprt.h>
#include <linux/sunrpc/sched.h>
#include <linux/sunrpc/bc_xprt.h>
#define RPCDBG_FACILITY RPCDBG_SVCDSP
/* Empty callback ops */
static const struct rpc_call_ops nfs41_callback_ops = {
};
/*
* Send the callback reply
*/
int bc_send(struct rpc_rqst *req)
{
struct rpc_task *task;
int ret;
dprintk("RPC: bc_send req= %p\n", req);
task = rpc_run_bc_task(req, &nfs41_callback_ops);
if (IS_ERR(task))
ret = PTR_ERR(task);
else {
WARN_ON_ONCE(atomic_read(&task->tk_count) != 1);
ret = task->tk_status;
rpc_put_task(task);
}
dprintk("RPC: bc_send ret= %d\n", ret);
return ret;
}

33
net/sunrpc/svc.c
View file

@ -1350,6 +1350,11 @@ bc_svc_process(struct svc_serv *serv, struct rpc_rqst *req,
{
struct kvec *argv = &rqstp->rq_arg.head[0];
struct kvec *resv = &rqstp->rq_res.head[0];
static const struct rpc_call_ops reply_ops = { };
struct rpc_task *task;
int error;
dprintk("svc: %s(%p)\n", __func__, req);
/* Build the svc_rqst used by the common processing routine */
rqstp->rq_xprt = serv->sv_bc_xprt;
@ -1372,21 +1377,33 @@ bc_svc_process(struct svc_serv *serv, struct rpc_rqst *req,
/*
* Skip the next two words because they've already been
* processed in the trasport
* processed in the transport
*/
svc_getu32(argv); /* XID */
svc_getnl(argv); /* CALLDIR */
/* Returns 1 for send, 0 for drop */
if (svc_process_common(rqstp, argv, resv)) {
memcpy(&req->rq_snd_buf, &rqstp->rq_res,
sizeof(req->rq_snd_buf));
return bc_send(req);
} else {
/* drop request */
/* Parse and execute the bc call */
if (!svc_process_common(rqstp, argv, resv)) {
/* Processing error: drop the request */
xprt_free_bc_request(req);
return 0;
}
/* Finally, send the reply synchronously */
memcpy(&req->rq_snd_buf, &rqstp->rq_res, sizeof(req->rq_snd_buf));
task = rpc_run_bc_task(req, &reply_ops);
if (IS_ERR(task)) {
error = PTR_ERR(task);
goto out;
}
WARN_ON_ONCE(atomic_read(&task->tk_count) != 1);
error = task->tk_status;
rpc_put_task(task);
out:
dprintk("svc: %s(), error=%d\n", __func__, error);
return error;
}
EXPORT_SYMBOL_GPL(bc_svc_process);
#endif /* CONFIG_SUNRPC_BACKCHANNEL */