4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
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17 * version 2 along with this program; if not, write to the
18 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 * Boston, MA 021110-1307, USA
24 * Copyright (c) 2012, 2013, Intel Corporation.
27 * lustre/target/tgt_main.c
29 * Lustre Unified Target main initialization code
31 * Author: Mikhail Pershin <mike.pershin@intel.com>
34 #define DEBUG_SUBSYSTEM S_CLASS
37 #include "tgt_internal.h"
39 int tgt_init(const struct lu_env *env, struct lu_target *lut,
40 struct obd_device *obd, struct dt_device *dt,
41 struct tgt_opc_slice *slice, int request_fail_id,
44 struct dt_object_format dof;
56 lut->lut_last_rcvd = NULL;
57 lut->lut_client_bitmap = NULL;
58 obd->u.obt.obt_lut = lut;
59 obd->u.obt.obt_magic = OBT_MAGIC;
61 /* set request handler slice and parameters */
62 lut->lut_slice = slice;
63 lut->lut_reply_fail_id = reply_fail_id;
64 lut->lut_request_fail_id = request_fail_id;
66 /* sptlrcp variables init */
67 rwlock_init(&lut->lut_sptlrpc_lock);
68 sptlrpc_rule_set_init(&lut->lut_sptlrpc_rset);
69 lut->lut_mds_capa = 1;
70 lut->lut_oss_capa = 1;
72 /* last_rcvd initialization is needed by replayable targets only */
73 if (!obd->obd_replayable)
76 spin_lock_init(&lut->lut_translock);
78 OBD_ALLOC(lut->lut_client_bitmap, LR_MAX_CLIENTS >> 3);
79 if (lut->lut_client_bitmap == NULL)
82 memset(&attr, 0, sizeof(attr));
83 attr.la_valid = LA_MODE;
84 attr.la_mode = S_IFREG | S_IRUGO | S_IWUSR;
85 dof.dof_type = dt_mode_to_dft(S_IFREG);
87 lu_local_obj_fid(&fid, LAST_RECV_OID);
89 o = dt_find_or_create(env, lut->lut_bottom, &fid, &dof, &attr);
91 lut->lut_last_rcvd = o;
93 OBD_FREE(lut->lut_client_bitmap, LR_MAX_CLIENTS >> 3);
94 lut->lut_client_bitmap = NULL;
96 CERROR("cannot open %s: rc = %d\n", LAST_RCVD, rc);
101 EXPORT_SYMBOL(tgt_init);
103 void tgt_fini(const struct lu_env *env, struct lu_target *lut)
107 sptlrpc_rule_set_free(&lut->lut_sptlrpc_rset);
109 if (lut->lut_client_bitmap) {
110 OBD_FREE(lut->lut_client_bitmap, LR_MAX_CLIENTS >> 3);
111 lut->lut_client_bitmap = NULL;
113 if (lut->lut_last_rcvd) {
114 lu_object_put(env, &lut->lut_last_rcvd->do_lu);
115 lut->lut_last_rcvd = NULL;
119 EXPORT_SYMBOL(tgt_fini);
121 /* context key constructor/destructor: tg_key_init, tg_key_fini */
122 LU_KEY_INIT_FINI(tgt, struct tgt_thread_info);
124 /* context key: tg_thread_key */
125 LU_CONTEXT_KEY_DEFINE(tgt, LCT_MD_THREAD | LCT_DT_THREAD);
126 EXPORT_SYMBOL(tgt_thread_key);
128 LU_KEY_INIT_GENERIC(tgt);
130 /* context key constructor/destructor: tgt_ses_key_init, tgt_ses_key_fini */
131 LU_KEY_INIT_FINI(tgt_ses, struct tgt_session_info);
133 /* context key: tgt_session_key */
134 struct lu_context_key tgt_session_key = {
135 .lct_tags = LCT_SERVER_SESSION,
136 .lct_init = tgt_ses_key_init,
137 .lct_fini = tgt_ses_key_fini,
139 EXPORT_SYMBOL(tgt_session_key);
141 LU_KEY_INIT_GENERIC(tgt_ses);
143 struct lprocfs_vars lprocfs_srv_module_vars[] = {
147 int tgt_mod_init(void)
151 tgt_key_init_generic(&tgt_thread_key, NULL);
152 lu_context_key_register_many(&tgt_thread_key, NULL);
154 tgt_ses_key_init_generic(&tgt_session_key, NULL);
155 lu_context_key_register_many(&tgt_session_key, NULL);
160 void tgt_mod_exit(void)
162 lu_context_key_degister(&tgt_thread_key);
163 lu_context_key_degister(&tgt_session_key);