1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26 #ifndef _NFS4_DRC_H
27 #define _NFS4_DRC_H
28
29 #pragma ident "%Z%%M% %I% %E% SMI"
30
31 #ifdef __cplusplus
32 extern "C" {
33 #endif
34
35 /*
36 * NFSv4 Duplicate Request cache.
37 */
38 typedef struct rfs4_drc {
39 kmutex_t lock;
40 uint32_t dr_hash;
41 uint32_t max_size;
42 uint32_t in_use;
43 list_t dr_cache;
44 list_t *dr_buckets;
45 } rfs4_drc_t;
46
47 /*
48 * NFSv4 Duplicate request cache entry.
49 */
50 typedef struct rfs4_dupreq {
53 list_t *dr_bkt;
54 rfs4_drc_t *drc;
55 int dr_state;
56 uint32_t dr_xid;
57 struct netbuf dr_addr;
58 COMPOUND4res dr_res;
59 } rfs4_dupreq_t;
60
61 /*
62 * State of rfs4_dupreq.
63 */
64 #define NFS4_DUP_ERROR -1
65 #define NFS4_NOT_DUP 0
66 #define NFS4_DUP_NEW 1
67 #define NFS4_DUP_PENDING 2
68 #define NFS4_DUP_FREE 3
69
70 #define NFS4_DUP_REPLAY 4
71 #define NFS4_DUP_INUSE 5
72
73 extern rfs4_drc_t *nfs4_drc;
74 extern uint32_t nfs4_drc_max;
75 extern uint32_t nfs4_drc_hash;
76
77 rfs4_drc_t *rfs4_init_drc(uint32_t, uint32_t);
78 void rfs4_fini_drc(rfs4_drc_t *);
79 void rfs4_dr_chstate(rfs4_dupreq_t *, int);
80 rfs4_dupreq_t *rfs4_alloc_dr(rfs4_drc_t *);
81 int rfs4_find_dr(struct svc_req *, rfs4_drc_t *, rfs4_dupreq_t **);
82
83 #ifdef __cplusplus
84 }
85 #endif
86
87 #endif /* _NFS4_DRC_H */
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1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /*
28 * Copyright 2018 Nexenta Systems, Inc.
29 */
30
31 #ifndef _NFS4_DRC_H
32 #define _NFS4_DRC_H
33
34 #ifdef __cplusplus
35 extern "C" {
36 #endif
37
38 /*
39 * NFSv4 Duplicate Request cache.
40 */
41 typedef struct rfs4_drc {
42 kmutex_t lock;
43 uint32_t dr_hash;
44 uint32_t max_size;
45 uint32_t in_use;
46 list_t dr_cache;
47 list_t *dr_buckets;
48 } rfs4_drc_t;
49
50 /*
51 * NFSv4 Duplicate request cache entry.
52 */
53 typedef struct rfs4_dupreq {
56 list_t *dr_bkt;
57 rfs4_drc_t *drc;
58 int dr_state;
59 uint32_t dr_xid;
60 struct netbuf dr_addr;
61 COMPOUND4res dr_res;
62 } rfs4_dupreq_t;
63
64 /*
65 * State of rfs4_dupreq.
66 */
67 #define NFS4_DUP_ERROR -1
68 #define NFS4_NOT_DUP 0
69 #define NFS4_DUP_NEW 1
70 #define NFS4_DUP_PENDING 2
71 #define NFS4_DUP_FREE 3
72
73 #define NFS4_DUP_REPLAY 4
74 #define NFS4_DUP_INUSE 5
75
76 extern uint32_t nfs4_drc_max;
77 extern uint32_t nfs4_drc_hash;
78
79 rfs4_drc_t *rfs4_init_drc(uint32_t, uint32_t);
80 void rfs4_fini_drc(void);
81 void rfs4_dr_chstate(rfs4_dupreq_t *, int);
82 rfs4_dupreq_t *rfs4_alloc_dr(rfs4_drc_t *);
83 int rfs4_find_dr(struct svc_req *, rfs4_drc_t *, rfs4_dupreq_t **);
84
85 #ifdef __cplusplus
86 }
87 #endif
88
89 #endif /* _NFS4_DRC_H */
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