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 | * | |
| 8 | * Redistribution and use in source and binary forms are permitted | |
| 9 | * provided that the above copyright notice and this paragraph are | |
| 10 | * duplicated in all such forms and that any documentation, | |
| 11 | * advertising materials, and other materials related to such | |
| 12 | * distribution and use acknowledge that the software was developed | |
| 13 | * by the University of California, Berkeley. The name of the | |
| 14 | * University may not be used to endorse or promote products derived | |
| 15 | * from this software without specific prior written permission. | |
| 16 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
| 17 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
| 18 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
| 19 | * | |
| f0f1cbaa | 20 | * @(#)nfsrvcache.h 7.2 (Berkeley) %G% |
| 95f0eacd KM |
21 | */ |
| 22 | ||
| 23 | /* | |
| 24 | * Definitions for the server recent request cache | |
| 25 | */ | |
| 26 | ||
| 27 | #define NFSRVCACHESIZ 128 | |
| 28 | #define NFSRCHSZ 32 | |
| 29 | ||
| 30 | struct nfsrvcache { | |
| 31 | struct nfsrvcache *rc_chain[2]; /* Hash chain links */ | |
| 32 | struct nfsrvcache *rc_next; /* Lru list */ | |
| 33 | struct nfsrvcache *rc_prev; | |
| 34 | int rc_state; /* Current state of request */ | |
| 35 | int rc_flag; /* Flag bits */ | |
| f0f1cbaa | 36 | struct mbuf rc_nam; /* Sockaddr of requestor */ |
| 95f0eacd KM |
37 | u_long rc_xid; /* rpc id number */ |
| 38 | int rc_proc; /* rpc proc number */ | |
| 39 | long rc_timestamp; /* Time stamp */ | |
| 40 | union { | |
| 41 | struct mbuf *rc_repmb; /* Reply mbuf list OR */ | |
| 42 | int rc_repstat; /* Reply status */ | |
| 43 | } rc_un; | |
| 44 | }; | |
| 45 | ||
| 46 | #define rc_forw rc_chain[0] | |
| 47 | #define rc_back rc_chain[1] | |
| 48 | #define rc_status rc_un.rc_repstat | |
| 49 | #define rc_reply rc_un.rc_repmb | |
| 50 | ||
| 51 | #define put_at_head(rp) \ | |
| 52 | (rp)->rc_prev->rc_next = (rp)->rc_next; \ | |
| 53 | (rp)->rc_next->rc_prev = (rp)->rc_prev; \ | |
| 54 | (rp)->rc_next = nfsrvcachehead.rc_next; \ | |
| 55 | (rp)->rc_next->rc_prev = (rp); \ | |
| 56 | nfsrvcachehead.rc_next = (rp); \ | |
| 57 | (rp)->rc_prev = &nfsrvcachehead | |
| 58 | ||
| 59 | /* Cache entry states */ | |
| 60 | #define RC_UNUSED 0 | |
| 61 | #define RC_INPROG 1 | |
| 62 | #define RC_DONE 2 | |
| 63 | ||
| 64 | /* Return values */ | |
| 65 | #define RC_DROPIT 0 | |
| 66 | #define RC_REPLY 1 | |
| 67 | #define RC_DOIT 2 | |
| 68 | ||
| 69 | /* Flag bits */ | |
| 70 | #define RC_LOCKED 0x1 | |
| 71 | #define RC_WANTED 0x2 | |
| 72 | #define RC_REPSTATUS 0x4 | |
| 73 | #define RC_REPMBUF 0x8 | |
| 74 | ||
| 75 | /* Delay time after completion that request is dropped */ | |
| 76 | #define RC_DELAY 2 /* seconds */ | |
| 77 |