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 | * |
| dbf0c423 | 10 | * @(#)nfsrvcache.h 7.3 (Berkeley) %G% |
| 95f0eacd KM |
11 | */ |
| 12 | ||
| 13 | /* | |
| 14 | * Definitions for the server recent request cache | |
| 15 | */ | |
| 16 | ||
| 17 | #define NFSRVCACHESIZ 128 | |
| 18 | #define NFSRCHSZ 32 | |
| 19 | ||
| 20 | struct nfsrvcache { | |
| 21 | struct nfsrvcache *rc_chain[2]; /* Hash chain links */ | |
| 22 | struct nfsrvcache *rc_next; /* Lru list */ | |
| 23 | struct nfsrvcache *rc_prev; | |
| 24 | int rc_state; /* Current state of request */ | |
| 25 | int rc_flag; /* Flag bits */ | |
| f0f1cbaa | 26 | struct mbuf rc_nam; /* Sockaddr of requestor */ |
| 95f0eacd KM |
27 | u_long rc_xid; /* rpc id number */ |
| 28 | int rc_proc; /* rpc proc number */ | |
| 29 | long rc_timestamp; /* Time stamp */ | |
| 30 | union { | |
| 31 | struct mbuf *rc_repmb; /* Reply mbuf list OR */ | |
| 32 | int rc_repstat; /* Reply status */ | |
| 33 | } rc_un; | |
| 34 | }; | |
| 35 | ||
| 36 | #define rc_forw rc_chain[0] | |
| 37 | #define rc_back rc_chain[1] | |
| 38 | #define rc_status rc_un.rc_repstat | |
| 39 | #define rc_reply rc_un.rc_repmb | |
| 40 | ||
| 41 | #define put_at_head(rp) \ | |
| 42 | (rp)->rc_prev->rc_next = (rp)->rc_next; \ | |
| 43 | (rp)->rc_next->rc_prev = (rp)->rc_prev; \ | |
| 44 | (rp)->rc_next = nfsrvcachehead.rc_next; \ | |
| 45 | (rp)->rc_next->rc_prev = (rp); \ | |
| 46 | nfsrvcachehead.rc_next = (rp); \ | |
| 47 | (rp)->rc_prev = &nfsrvcachehead | |
| 48 | ||
| 49 | /* Cache entry states */ | |
| 50 | #define RC_UNUSED 0 | |
| 51 | #define RC_INPROG 1 | |
| 52 | #define RC_DONE 2 | |
| 53 | ||
| 54 | /* Return values */ | |
| 55 | #define RC_DROPIT 0 | |
| 56 | #define RC_REPLY 1 | |
| 57 | #define RC_DOIT 2 | |
| 58 | ||
| 59 | /* Flag bits */ | |
| 60 | #define RC_LOCKED 0x1 | |
| 61 | #define RC_WANTED 0x2 | |
| 62 | #define RC_REPSTATUS 0x4 | |
| 63 | #define RC_REPMBUF 0x8 | |
| 64 | ||
| 65 | /* Delay time after completion that request is dropped */ | |
| 66 | #define RC_DELAY 2 /* seconds */ | |
| 67 |