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 (c) 2002-2003, Network Appliance, Inc. All rights reserved.
24 */
25
26 /*
27 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
28 * Use is subject to license terms.
29 */
30
31
32 /*
33 *
34 * MODULE: dapl_lmr_util.c
35 *
36 * PURPOSE: Memory management support routines
37 * Description: Support routines for LMR functions
38 *
39 */
40
41 #include <sys/ib/ibtl/ibtl_types.h>
42 #include "dapl_lmr_util.h"
43 #include "dapl_ia_util.h"
44
45 DAPL_LMR *
dapl_lmr_alloc(IN DAPL_IA * ia,IN DAT_MEM_TYPE mem_type,IN DAT_REGION_DESCRIPTION region_desc,IN DAT_VLEN length,IN DAT_PZ_HANDLE pz_handle,IN DAT_MEM_PRIV_FLAGS mem_priv)46 dapl_lmr_alloc(IN DAPL_IA *ia,
47 IN DAT_MEM_TYPE mem_type,
48 IN DAT_REGION_DESCRIPTION region_desc,
49 IN DAT_VLEN length,
50 IN DAT_PZ_HANDLE pz_handle,
51 IN DAT_MEM_PRIV_FLAGS mem_priv)
52 {
53 DAPL_LMR *lmr;
54
55 /* Allocate LMR */
56 lmr = (DAPL_LMR *)dapl_os_alloc(sizeof (DAPL_LMR));
57 if (NULL == lmr) {
58 return (NULL);
59 }
60
61 /* zero the structure */
62 (void) dapl_os_memzero(lmr, sizeof (DAPL_LMR));
63
64 /*
65 * initialize the header
66 */
67 lmr->header.provider = ia->header.provider;
68 lmr->header.magic = DAPL_MAGIC_LMR;
69 lmr->header.handle_type = DAT_HANDLE_TYPE_LMR;
70 lmr->header.owner_ia = ia;
71 lmr->header.user_context.as_64 = 0;
72 lmr->header.user_context.as_ptr = NULL;
73 dapl_llist_init_entry(&lmr->header.ia_list_entry);
74 dapl_ia_link_lmr(ia, lmr);
75 dapl_os_lock_init(&lmr->header.lock);
76
77 /*
78 * initialize the body
79 */
80 lmr->param.ia_handle = (DAT_IA_HANDLE)ia;
81 lmr->param.mem_type = mem_type;
82 lmr->param.region_desc = region_desc;
83 lmr->param.length = length;
84 lmr->param.pz_handle = pz_handle;
85 lmr->param.mem_priv = mem_priv;
86 lmr->lmr_ref_count = 0;
87
88 return (lmr);
89 }
90
91 void
dapl_lmr_dealloc(IN DAPL_LMR * lmr)92 dapl_lmr_dealloc(IN DAPL_LMR *lmr)
93 {
94 /* reset magic to prevent reuse */
95 lmr->header.magic = DAPL_MAGIC_INVALID;
96 dapl_ia_unlink_lmr(lmr->header.owner_ia, lmr);
97 dapl_os_lock_destroy(&lmr->header.lock);
98
99 dapl_os_free((void *) lmr, sizeof (DAPL_LMR));
100 }
101
102 int32_t
dapl_lmr_convert_privileges(IN DAT_MEM_PRIV_FLAGS privileges)103 dapl_lmr_convert_privileges(IN DAT_MEM_PRIV_FLAGS privileges)
104 {
105 int32_t value = 0;
106
107 /*
108 * if (DAT_MEM_PRIV_LOCAL_READ_FLAG & privileges)
109 * do nothing
110 */
111 if (DAT_MEM_PRIV_LOCAL_WRITE_FLAG & privileges) {
112 value |= IB_ACCESS_LOCAL_WRITE;
113 }
114 if (DAT_MEM_PRIV_REMOTE_READ_FLAG & privileges) {
115 value |= IB_ACCESS_REMOTE_READ;
116 }
117 if (DAT_MEM_PRIV_REMOTE_WRITE_FLAG & privileges) {
118 value |= IB_ACCESS_REMOTE_WRITE;
119 }
120 if (DAT_MEM_PRIV_RO_DISABLE_FLAG & privileges) {
121 value |= IBT_MR_DISABLE_RO;
122 }
123 return (value);
124 }
125