blob: 5965ae4f902d0428d5d0afeed485a94a925a8bce [file] [log] [blame]
Ricardo Labiaga4a8d70b2009-04-01 09:23:01 -04001/******************************************************************************
2
3(c) 2008 NetApp. All Rights Reserved.
4
5NetApp provides this source code under the GPL v2 License.
6The GPL v2 license is available at
7http://opensource.org/licenses/gpl-license.php.
8
9THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
10"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
11LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
12A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
13CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
14EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
15PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
16PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
17LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
18NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
19SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
20
21******************************************************************************/
22
23/*
24 * Functions to create and manage the backchannel
25 */
26
27#ifndef _LINUX_SUNRPC_BC_XPRT_H
28#define _LINUX_SUNRPC_BC_XPRT_H
29
30#include <linux/sunrpc/svcsock.h>
31#include <linux/sunrpc/xprt.h>
32
33#ifdef CONFIG_NFS_V4_1
34struct rpc_rqst *xprt_alloc_bc_request(struct rpc_xprt *xprt);
35void xprt_free_bc_request(struct rpc_rqst *req);
36int xprt_setup_backchannel(struct rpc_xprt *, unsigned int min_reqs);
37void xprt_destroy_backchannel(struct rpc_xprt *, int max_reqs);
38#else /* CONFIG_NFS_V4_1 */
39static inline int xprt_setup_backchannel(struct rpc_xprt *xprt,
40 unsigned int min_reqs)
41{
42 return 0;
43}
44#endif /* CONFIG_NFS_V4_1 */
45#endif /* _LINUX_SUNRPC_BC_XPRT_H */
46