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- /*
- * Copyright (c) 1989 The Regents of the University of California.
- * All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Rick Macklem at The University of Guelph.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
- *
- * @(#)nfsrvcache.h 7.3 (Berkeley) 6/28/90
- */
-
- /*
- * Definitions for the server recent request cache
- */
-
- #define NFSRVCACHESIZ 128
- #define NFSRCHSZ 32
-
- struct nfsrvcache {
- struct nfsrvcache *rc_chain[2]; /* Hash chain links */
- struct nfsrvcache *rc_next; /* Lru list */
- struct nfsrvcache *rc_prev;
- int rc_state; /* Current state of request */
- int rc_flag; /* Flag bits */
- struct mbuf rc_nam; /* Sockaddr of requestor */
- u_long rc_xid; /* rpc id number */
- int rc_proc; /* rpc proc number */
- long rc_timestamp; /* Time stamp */
- union {
- struct mbuf *rc_repmb; /* Reply mbuf list OR */
- int rc_repstat; /* Reply status */
- } rc_un;
- };
-
- #define rc_forw rc_chain[0]
- #define rc_back rc_chain[1]
- #define rc_status rc_un.rc_repstat
- #define rc_reply rc_un.rc_repmb
-
- #define put_at_head(rp) \
- (rp)->rc_prev->rc_next = (rp)->rc_next; \
- (rp)->rc_next->rc_prev = (rp)->rc_prev; \
- (rp)->rc_next = nfsrvcachehead.rc_next; \
- (rp)->rc_next->rc_prev = (rp); \
- nfsrvcachehead.rc_next = (rp); \
- (rp)->rc_prev = &nfsrvcachehead
-
- /* Cache entry states */
- #define RC_UNUSED 0
- #define RC_INPROG 1
- #define RC_DONE 2
-
- /* Return values */
- #define RC_DROPIT 0
- #define RC_REPLY 1
- #define RC_DOIT 2
-
- /* Flag bits */
- #define RC_LOCKED 0x1
- #define RC_WANTED 0x2
- #define RC_REPSTATUS 0x4
- #define RC_REPMBUF 0x8
-
- /* Delay time after completion that request is dropped */
- #define RC_DELAY 2 /* seconds */
-
-