xref: /illumos-gate/usr/src/lib/udapl/udapl_tavor/common/dapl_rmr_util.c (revision 9e39c5ba00a55fa05777cc94b148296af305e135)
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 2004 Sun Microsystems, Inc.  All rights reserved.
28  * Use is subject to license terms.
29  */
30 
31 #include "dapl_rmr_util.h"
32 #include "dapl_ia_util.h"
33 
34 DAPL_RMR *
dapl_rmr_alloc(IN DAPL_PZ * pz)35 dapl_rmr_alloc(IN DAPL_PZ * pz)
36 {
37 	DAPL_RMR *rmr;
38 
39 	/* Allocate LMR */
40 	rmr = (DAPL_RMR *)dapl_os_alloc(sizeof (DAPL_RMR));
41 	if (NULL == rmr) {
42 		return (NULL);
43 	}
44 
45 	/* zero the structure */
46 	(void) dapl_os_memzero(rmr, sizeof (DAPL_RMR));
47 
48 	/*
49 	 * initialize the header
50 	 */
51 	rmr->header.provider = pz->header.provider;
52 	rmr->header.magic = DAPL_MAGIC_RMR;
53 	rmr->header.handle_type = DAT_HANDLE_TYPE_RMR;
54 	rmr->header.owner_ia = pz->header.owner_ia;
55 	rmr->header.user_context.as_64 = 0;
56 	rmr->header.user_context.as_ptr = 0;
57 	dapl_llist_init_entry(&rmr->header.ia_list_entry);
58 	dapl_ia_link_rmr(rmr->header.owner_ia, rmr);
59 	dapl_os_lock_init(&rmr->header.lock);
60 
61 	/*
62 	 * initialize the body
63 	 */
64 	rmr->param.ia_handle = (DAT_IA_HANDLE)pz->header.owner_ia;
65 	rmr->param.pz_handle = (DAT_PZ_HANDLE)pz;
66 	rmr->param.lmr_triplet.lmr_context = 0;
67 	rmr->param.lmr_triplet.pad = 0;
68 	rmr->param.lmr_triplet.virtual_address = 0;
69 	rmr->param.lmr_triplet.segment_length = 0;
70 
71 	rmr->param.mem_priv = 0;
72 	rmr->pz = pz;
73 	rmr->lmr = NULL;
74 
75 	return (rmr);
76 }
77 
78 void
dapl_rmr_dealloc(IN DAPL_RMR * rmr)79 dapl_rmr_dealloc(IN DAPL_RMR *rmr)
80 {
81 	/* reset magic to prevent reuse */
82 	rmr->header.magic = DAPL_MAGIC_INVALID;
83 
84 	dapl_ia_unlink_rmr(rmr->header.owner_ia, rmr);
85 	dapl_os_lock_destroy(&rmr->header.lock);
86 
87 	dapl_os_free((void *) rmr, sizeof (DAPL_RMR));
88 }
89 
90 DAT_BOOLEAN
dapl_rmr_validate_completion_flag(IN DAT_COMPLETION_FLAGS mask,IN DAT_COMPLETION_FLAGS allow,IN DAT_COMPLETION_FLAGS request)91 dapl_rmr_validate_completion_flag(IN DAT_COMPLETION_FLAGS mask,
92 	IN DAT_COMPLETION_FLAGS allow,
93 	IN DAT_COMPLETION_FLAGS request)
94 {
95 	if ((mask & request) && !(mask & allow)) {
96 		return (DAT_FALSE);
97 	} else {
98 		return (DAT_TRUE);
99 	}
100 }
101 
102 int32_t
dapl_rmr_convert_privileges(IN DAT_MEM_PRIV_FLAGS privileges)103 dapl_rmr_convert_privileges(IN DAT_MEM_PRIV_FLAGS privileges)
104 {
105 	int32_t value = 0;
106 
107 	if (DAT_MEM_PRIV_REMOTE_READ_FLAG & privileges) {
108 		value |= IB_BIND_ACCESS_REMOTE_READ;
109 	}
110 	if (DAT_MEM_PRIV_REMOTE_WRITE_FLAG & privileges) {
111 		value |= IB_BIND_ACCESS_REMOTE_WRITE;
112 	}
113 	return (value);
114 }
115