* Copyright (c) 1989 The Regents of the University of California.
* 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 are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley. The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
* @(#)nfsrvcache.h 7.2 (Berkeley) %G%
* Definitions for the server recent request cache
#define NFSRVCACHESIZ 128
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 */
struct mbuf
*rc_repmb
; /* Reply mbuf list OR */
int rc_repstat
; /* Reply status */
#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
/* Delay time after completion that request is dropped */
#define RC_DELAY 2 /* seconds */