108 lines
3.4 KiB
C
108 lines
3.4 KiB
C
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/*-
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Rick Macklem at The University of Guelph.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _NFS_NFSRVCACHE_H_
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#define _NFS_NFSRVCACHE_H_
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/*
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* Definitions for the server recent request cache
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*/
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#define NFSRVCACHE_MAX_SIZE 2048
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#define NFSRVCACHE_MIN_SIZE 64
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#define NFSRVCACHE_HASHSIZE 20
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struct nfsrvcache {
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LIST_ENTRY(nfsrvcache) rc_hash; /* Hash chain */
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TAILQ_ENTRY(nfsrvcache) rc_lru; /* UDP lru chain */
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u_int32_t rc_xid; /* rpc id number */
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time_t rc_timestamp; /* Time done */
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union {
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mbuf_t repmb; /* Reply mbuf list OR */
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int repstat; /* Reply status */
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} rc_un;
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union {
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struct {
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union nethostaddr haddr; /* Host address */
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} udp;
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struct {
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u_int64_t sockref;
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u_int32_t len;
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u_int32_t tcpseq;
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int16_t refcnt;
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u_int16_t cksum;
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time_t cachetime;
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} ot;
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} rc_un2;
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u_int16_t rc_proc; /* rpc proc number */
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u_int16_t rc_flag; /* Flag bits */
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};
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#define rc_reply rc_un.repmb
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#define rc_status rc_un.repstat
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#define rc_inet rc_un2.udp.haddr.had_inet.s_addr
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#define rc_inet6 rc_un2.udp.haddr.had_inet6
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#define rc_haddr rc_un2.udp.haddr
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#define rc_sockref rc_un2.ot.sockref
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#define rc_tcpseq rc_un2.ot.tcpseq
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#define rc_refcnt rc_un2.ot.refcnt
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#define rc_reqlen rc_un2.ot.len
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#define rc_cksum rc_un2.ot.cksum
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#define rc_cachetime rc_un2.ot.cachetime
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/* Return values */
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#define RC_DROPIT 0
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#define RC_REPLY 1
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#define RC_DOIT 2
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/* Flag bits */
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#define RC_LOCKED 0x0001
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#define RC_WANTED 0x0002
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#define RC_REPSTATUS 0x0004
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#define RC_REPMBUF 0x0008
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#define RC_UDP 0x0010
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#define RC_INETIPV6 0x0020
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#define RC_INPROG 0x0040
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#define RC_TCPSEQ 0x0080
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#define RC_NFSV2 0x0100
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#define RC_NFSV3 0x0200
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#define RC_NFSV4 0x0400
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#define RC_NFSVERS (RC_NFSV2 | RC_NFSV3 | RC_NFSV4)
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#define RC_REFCNT 0x0800
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#define RC_SAMETCPCONN 0x1000
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LIST_HEAD(nfsrvhashhead, nfsrvcache);
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#endif /* _NFS_NFSRVCACHE_H_ */
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