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 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
27 /* All Rights Reserved */
28
29
30 #pragma ident "%Z%%M% %I% %E% SMI" /* SVr4.0 */
31
32 /*
33 * Define and initialize MT client/server data.
34 */
35
36 #include <sys/types.h>
37 #include <sys/t_lock.h>
38 #include <sys/kstat.h>
39 #include <sys/systm.h>
40 #include <sys/zone.h>
41
42 #include <rpc/types.h>
43 #include <rpc/auth.h>
44 #include <rpc/clnt.h>
45
46 kmutex_t xid_lock; /* XID allocation */
47 kmutex_t clnt_pending_lock; /* for list of pending calls awaiting replies */
48 kmutex_t clnt_max_msg_lock; /* updating max message sanity check for cots */
49
50 zone_key_t rpcstat_zone_key;
51
52 /*
53 * rpcstat_zone_[init|fini]_common() ends up being nearly identical to
54 * nfsstat_zone_[init|fini]_common(). Due to them necessarily being in
55 * different modules, however, we end up needing to duplicate the code.
56 */
57 kstat_named_t *
rpcstat_zone_init_common(zoneid_t zoneid,const char * module,const char * name,const kstat_named_t * template,size_t template_size)58 rpcstat_zone_init_common(zoneid_t zoneid, const char *module, const char *name,
59 const kstat_named_t *template, size_t template_size)
60 {
61 kstat_t *ksp;
62 kstat_named_t *ks_data;
63
64
65 /*
66 * PSARC 2001/697 Contract Private Interface
67 * rpc_clts_client
68 * rpc_cots_client
69 * Changes must be reviewed by Solaris File Sharing
70 * Changes must be communicated to contract-2001-697@sun.com
71 *
72 */
73 ks_data = kmem_alloc(template_size, KM_SLEEP);
74 bcopy(template, ks_data, template_size);
75 if ((ksp = kstat_create_zone(module, 0, name, "rpc",
76 KSTAT_TYPE_NAMED, template_size / sizeof (kstat_named_t),
77 KSTAT_FLAG_VIRTUAL | KSTAT_FLAG_WRITABLE, zoneid)) != NULL) {
78 ksp->ks_data = ks_data;
79 kstat_install(ksp);
80 }
81 return (ks_data);
82 }
83
84 void
rpcstat_zone_fini_common(zoneid_t zoneid,const char * module,const char * name)85 rpcstat_zone_fini_common(zoneid_t zoneid, const char *module, const char *name)
86 {
87 kstat_delete_byname_zone(module, 0, name, zoneid);
88 }
89
90 static void *
mt_kstat_zone_init(zoneid_t zoneid)91 mt_kstat_zone_init(zoneid_t zoneid)
92 {
93 struct rpcstat *rpcstat;
94
95 rpcstat = kmem_alloc(sizeof (*rpcstat), KM_SLEEP);
96
97 clnt_clts_stats_init(zoneid, &rpcstat->rpc_clts_client);
98 svc_clts_stats_init(zoneid, &rpcstat->rpc_clts_server);
99
100 clnt_cots_stats_init(zoneid, &rpcstat->rpc_cots_client);
101 svc_cots_stats_init(zoneid, &rpcstat->rpc_cots_server);
102
103 return (rpcstat);
104 }
105
106 /*
107 * Deletes the previously allocated "rpc" kstats
108 */
109 static void
mt_kstat_zone_fini(zoneid_t zoneid,void * data)110 mt_kstat_zone_fini(zoneid_t zoneid, void *data)
111 {
112 struct rpcstat *rpcstat = data;
113
114 clnt_cots_stats_fini(zoneid, &rpcstat->rpc_cots_client);
115 svc_cots_stats_fini(zoneid, &rpcstat->rpc_cots_server);
116
117 clnt_clts_stats_fini(zoneid, &rpcstat->rpc_clts_client);
118 svc_clts_stats_fini(zoneid, &rpcstat->rpc_clts_server);
119
120 kmem_free(rpcstat, sizeof (*rpcstat));
121 }
122
123 void
mt_kstat_init(void)124 mt_kstat_init(void)
125 {
126 zone_key_create(&rpcstat_zone_key, mt_kstat_zone_init, NULL,
127 mt_kstat_zone_fini);
128 }
129
130 void
mt_kstat_fini(void)131 mt_kstat_fini(void)
132 {
133 (void) zone_key_delete(rpcstat_zone_key);
134 }
135
136 static bool_t clnt_xid_initialized = FALSE;
137 static uint32_t clnt_xid = 0; /* transaction id used by all clients */
138
139 uint32_t
alloc_xid(void)140 alloc_xid(void)
141 {
142 uint32_t xid;
143 timestruc_t now;
144
145 /*
146 * Do a one time initialzation to better utilize the number
147 * space.
148 */
149 mutex_enter(&xid_lock);
150 if (clnt_xid_initialized == FALSE) {
151 clnt_xid_initialized = TRUE;
152 gethrestime(&now);
153 clnt_xid = (uint32_t)((now.tv_sec << 20) |
154 (now.tv_nsec >> 10));
155 }
156
157 xid = clnt_xid++;
158
159 /*
160 * Don't return a zero xid. This could happen if the initialization
161 * happens to return zero or if clnt_xid wraps.
162 */
163 if (xid == 0)
164 xid = clnt_xid++;
165
166 mutex_exit(&xid_lock);
167 return (xid);
168 }
169
170 /*
171 * These functions are temporary and designed for the upgrade-workaround only.
172 * They cannot be used for general zone-crossing RPC client support, and will
173 * be removed shortly.
174 *
175 * Currently these functions route all nfs global clients to the global zone.
176 * When this upgrade-workaround is removed these function should return the
177 * correct zone or their calls should be changed (rpc_zone() to curproc->p_zone
178 * and rpc_zoneid() to getzoneid()).
179 */
180 struct zone *
rpc_zone(void)181 rpc_zone(void)
182 {
183 return (nfs_global_client_only != 0 ? global_zone : curproc->p_zone);
184 }
185
186 zoneid_t
rpc_zoneid(void)187 rpc_zoneid(void)
188 {
189 return (nfs_global_client_only != 0 ? GLOBAL_ZONEID : getzoneid());
190 }
191