1 /* 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Rick Macklem at The University of Guelph. 7 * 8 * %sccs.include.redist.c% 9 * 10 * @(#)nfsrvcache.h 8.3 (Berkeley) 03/30/95 11 */ 12 13 14 #ifndef _NFS_NFSRVCACHE_H_ 15 #define _NFS_NFSRVCACHE_H_ 16 17 /* 18 * Definitions for the server recent request cache 19 */ 20 21 #define NFSRVCACHESIZ 64 22 23 struct nfsrvcache { 24 TAILQ_ENTRY(nfsrvcache) rc_lru; /* LRU chain */ 25 LIST_ENTRY(nfsrvcache) rc_hash; /* Hash chain */ 26 u_long rc_xid; /* rpc id number */ 27 union { 28 struct mbuf *ru_repmb; /* Reply mbuf list OR */ 29 int ru_repstat; /* Reply status */ 30 } rc_un; 31 union nethostaddr rc_haddr; /* Host address */ 32 short rc_proc; /* rpc proc number */ 33 u_char rc_state; /* Current state of request */ 34 u_char rc_flag; /* Flag bits */ 35 }; 36 37 #define rc_reply rc_un.ru_repmb 38 #define rc_status rc_un.ru_repstat 39 #define rc_inetaddr rc_haddr.had_inetaddr 40 #define rc_nam rc_haddr.had_nam 41 42 /* Cache entry states */ 43 #define RC_UNUSED 0 44 #define RC_INPROG 1 45 #define RC_DONE 2 46 47 /* Return values */ 48 #define RC_DROPIT 0 49 #define RC_REPLY 1 50 #define RC_DOIT 2 51 #define RC_CHECKIT 3 52 53 /* Flag bits */ 54 #define RC_LOCKED 0x01 55 #define RC_WANTED 0x02 56 #define RC_REPSTATUS 0x04 57 #define RC_REPMBUF 0x08 58 #define RC_NQNFS 0x10 59 #define RC_INETADDR 0x20 60 #define RC_NAM 0x40 61 62 #endif 63