projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 95f0eacd KM |
1 | /* |
| 2 | * Copyright (c) 1989 The Regents of the University of California. | |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * This code is derived from software contributed to Berkeley by | |
| 6 | * Rick Macklem at The University of Guelph. | |
| 7 | * | |
| dbf0c423 | 8 | * %sccs.include.redist.c% |
| 95f0eacd | 9 | * |
| 96964be4 | 10 | * @(#)nfsrvcache.h 7.5 (Berkeley) %G% |
| 95f0eacd KM |
11 | */ |
| 12 | ||
| 13 | /* | |
| 14 | * Definitions for the server recent request cache | |
| 15 | */ | |
| 16 | ||
| 2c5b44a2 | 17 | #define NFSRVCACHESIZ 256 |
| 95f0eacd KM |
18 | |
| 19 | struct nfsrvcache { | |
| 96964be4 KM |
20 | struct nfsrvcache *rc_forw; /* Hash chain links */ |
| 21 | struct nfsrvcache **rc_back; /* Hash chain links */ | |
| 22 | struct nfsrvcache *rc_next; /* Lru list */ | |
| 23 | struct nfsrvcache **rc_prev; /* Lru list */ | |
| 2c5b44a2 KM |
24 | u_long rc_xid; /* rpc id number */ |
| 25 | time_t rc_timestamp; /* Time stamp */ | |
| 95f0eacd | 26 | union { |
| 2c5b44a2 KM |
27 | struct mbuf *ru_repmb; /* Reply mbuf list OR */ |
| 28 | int ru_repstat; /* Reply status */ | |
| 95f0eacd | 29 | } rc_un; |
| 2c5b44a2 KM |
30 | union nethostaddr rc_haddr; /* Host address */ |
| 31 | short rc_proc; /* rpc proc number */ | |
| 32 | u_char rc_state; /* Current state of request */ | |
| 33 | u_char rc_flag; /* Flag bits */ | |
| 95f0eacd KM |
34 | }; |
| 35 | ||
| 2c5b44a2 KM |
36 | #define rc_reply rc_un.ru_repmb |
| 37 | #define rc_status rc_un.ru_repstat | |
| 38 | #define rc_inetaddr rc_haddr.had_inetaddr | |
| 39 | #define rc_nam rc_haddr.had_nam | |
| 95f0eacd KM |
40 | |
| 41 | /* Cache entry states */ | |
| 42 | #define RC_UNUSED 0 | |
| 43 | #define RC_INPROG 1 | |
| 44 | #define RC_DONE 2 | |
| 45 | ||
| 46 | /* Return values */ | |
| 47 | #define RC_DROPIT 0 | |
| 48 | #define RC_REPLY 1 | |
| 49 | #define RC_DOIT 2 | |
| 50 | ||
| 51 | /* Flag bits */ | |
| 2c5b44a2 KM |
52 | #define RC_LOCKED 0x01 |
| 53 | #define RC_WANTED 0x02 | |
| 54 | #define RC_REPSTATUS 0x04 | |
| 55 | #define RC_REPMBUF 0x08 | |
| 56 | #define RC_NQNFS 0x10 | |
| 57 | #define RC_INETADDR 0x20 | |
| 58 | #define RC_NAM 0x40 | |
| 95f0eacd KM |
59 | |
| 60 | /* Delay time after completion that request is dropped */ | |
| 61 | #define RC_DELAY 2 /* seconds */ | |
| 62 |