projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 4a8d70bf RL |
1 | /****************************************************************************** |
| 2 | ||
| 3 | (c) 2008 NetApp. All Rights Reserved. | |
| 4 | ||
| 5 | NetApp provides this source code under the GPL v2 License. | |
| 6 | The GPL v2 license is available at | |
| 7 | http://opensource.org/licenses/gpl-license.php. | |
| 8 | ||
| 9 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 10 | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 11 | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 12 | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR | |
| 13 | CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 14 | EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 15 | PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 16 | PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
| 17 | LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
| 18 | NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
| 19 | SOFTWARE, 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> | |
| 0d90ba1c | 32 | #include <linux/sunrpc/sched.h> |
| 4a8d70bf | 33 | |
| 9e00abc3 | 34 | #ifdef CONFIG_SUNRPC_BACKCHANNEL |
| 2ea24497 TM |
35 | struct rpc_rqst *xprt_lookup_bc_request(struct rpc_xprt *xprt, __be32 xid); |
| 36 | void xprt_complete_bc_request(struct rpc_rqst *req, uint32_t copied); | |
| 4a8d70bf RL |
37 | void xprt_free_bc_request(struct rpc_rqst *req); |
| 38 | int xprt_setup_backchannel(struct rpc_xprt *, unsigned int min_reqs); | |
| 09acfea5 | 39 | void xprt_destroy_backchannel(struct rpc_xprt *, unsigned int max_reqs); |
| ba17686f | 40 | |
| 42e5c3e2 CL |
41 | /* Socket backchannel transport methods */ |
| 42 | int xprt_setup_bc(struct rpc_xprt *xprt, unsigned int min_reqs); | |
| 43 | void xprt_destroy_bc(struct rpc_xprt *xprt, unsigned int max_reqs); | |
| 44 | void xprt_free_bc_rqst(struct rpc_rqst *req); | |
| 45 | ||
| ba17686f AA |
46 | /* |
| 47 | * Determine if a shared backchannel is in use | |
| 48 | */ | |
| 49 | static inline int svc_is_backchannel(const struct svc_rqst *rqstp) | |
| 50 | { | |
| 4a19de0f | 51 | if (rqstp->rq_server->sv_bc_xprt) |
| ba17686f AA |
52 | return 1; |
| 53 | return 0; | |
| 54 | } | |
| 9e00abc3 | 55 | #else /* CONFIG_SUNRPC_BACKCHANNEL */ |
| 4a8d70bf RL |
56 | static inline int xprt_setup_backchannel(struct rpc_xprt *xprt, |
| 57 | unsigned int min_reqs) | |
| 58 | { | |
| 59 | return 0; | |
| 60 | } | |
| ba17686f AA |
61 | |
| 62 | static inline int svc_is_backchannel(const struct svc_rqst *rqstp) | |
| 63 | { | |
| 64 | return 0; | |
| 65 | } | |
| c9acb42e TM |
66 | |
| 67 | static inline void xprt_free_bc_request(struct rpc_rqst *req) | |
| 68 | { | |
| 69 | } | |
| 9e00abc3 | 70 | #endif /* CONFIG_SUNRPC_BACKCHANNEL */ |
| 4a8d70bf RL |
71 | #endif /* _LINUX_SUNRPC_BC_XPRT_H */ |
| 72 |