![Andy Adamson](/assets/img/avatar_default.png)
The information required to find the nfs_client cooresponding to the incoming back channel request is contained in the NFS layer. Perform minimal checking in the RPC layer pg_authenticate method, and push more detailed checking into the NFS layer where the nfs_client can be found. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
68 lines
2.1 KiB
C
68 lines
2.1 KiB
C
/******************************************************************************
|
|
|
|
(c) 2008 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.
|
|
|
|
******************************************************************************/
|
|
|
|
/*
|
|
* Functions to create and manage the backchannel
|
|
*/
|
|
|
|
#ifndef _LINUX_SUNRPC_BC_XPRT_H
|
|
#define _LINUX_SUNRPC_BC_XPRT_H
|
|
|
|
#include <linux/sunrpc/svcsock.h>
|
|
#include <linux/sunrpc/xprt.h>
|
|
#include <linux/sunrpc/sched.h>
|
|
|
|
#ifdef CONFIG_NFS_V4_1
|
|
struct rpc_rqst *xprt_alloc_bc_request(struct rpc_xprt *xprt);
|
|
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 *, int max_reqs);
|
|
int bc_send(struct rpc_rqst *req);
|
|
|
|
/*
|
|
* Determine if a shared backchannel is in use
|
|
*/
|
|
static inline int svc_is_backchannel(const struct svc_rqst *rqstp)
|
|
{
|
|
if (rqstp->rq_server->sv_bc_xprt)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
#else /* CONFIG_NFS_V4_1 */
|
|
static inline int xprt_setup_backchannel(struct rpc_xprt *xprt,
|
|
unsigned int min_reqs)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int svc_is_backchannel(const struct svc_rqst *rqstp)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void xprt_free_bc_request(struct rpc_rqst *req)
|
|
{
|
|
}
|
|
#endif /* CONFIG_NFS_V4_1 */
|
|
#endif /* _LINUX_SUNRPC_BC_XPRT_H */
|
|
|