The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

FreeBSD/Linux Kernel Cross Reference
sys/rpc/replay.h

Version: -  FREEBSD  -  FREEBSD-13-STABLE  -  FREEBSD-13-0  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  l41  -  OPENBSD  -  linux-2.6  -  MK84  -  PLAN9  -  xnu-8792 
SearchContext: -  none  -  3  -  10 

    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2008 Isilon Inc http://www.isilon.com/
    5  * Authors: Doug Rabson <dfr@rabson.org>
    6  * Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org>
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  *
   29  * $FreeBSD$
   30  */
   31 
   32 #ifndef _RPC_REPLAY_H
   33 #define _RPC_REPLAY_H
   34 
   35 enum replay_state {
   36         RS_NEW,                 /* new request - caller should execute */
   37         RS_DONE,                /* request was executed and reply sent */
   38         RS_INPROGRESS,          /* request is being executed now */
   39         RS_ERROR                /* allocation or other failure */
   40 };
   41 
   42 struct replay_cache;
   43 
   44 /*
   45  * Create a new replay cache.
   46  */
   47 struct replay_cache     *replay_newcache(size_t);
   48 
   49 /*
   50  * Set the replay cache size.
   51  */
   52 void                    replay_setsize(struct replay_cache *, size_t);
   53 
   54 /*
   55  * Free a replay cache. Caller must ensure that no cache entries are
   56  * in-progress.
   57  */
   58 void                    replay_freecache(struct replay_cache *rc);
   59 
   60 /*
   61  * Check a replay cache for a message from a given address.
   62  *
   63  * If this is a new request, RS_NEW is returned. Caller should call
   64  * replay_setreply with the results of the request.
   65  *
   66  * If this is a request which is currently executing
   67  * (i.e. replay_setreply hasn't been called for it yet), RS_INPROGRESS
   68  * is returned. The caller should silently drop the request.
   69  *
   70  * If a reply to this message already exists, *repmsg and *mp are set
   71  * to point at the reply and, RS_DONE is returned. The caller should
   72  * re-send this reply.
   73  *
   74  * If the attempt to update the replay cache or copy a replay failed
   75  * for some reason (typically memory shortage), RS_ERROR is returned.
   76  */
   77 enum replay_state       replay_find(struct replay_cache *rc,
   78     struct rpc_msg *msg, struct sockaddr *addr,
   79     struct rpc_msg *repmsg, struct mbuf **mp);
   80 
   81 /*
   82  * Call this after executing a request to record the reply.
   83  */
   84 void                    replay_setreply(struct replay_cache *rc,
   85     struct rpc_msg *repmsg,  struct sockaddr *addr, struct mbuf *m);
   86 
   87 #endif /* !_RPC_REPLAY_H */

Cache object: d1478a900c7f4fee5e8e2171aad7c89c


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.