dapl_rmr_create.c revision 9517:b4839b0aa7a4 
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 2003 Sun Microsystems, Inc.  All rights reserved.
28 * Use is subject to license terms.
29 */
30
31/*
32 *
33 * MODULE: dapl_rmr_create.c
34 *
35 * PURPOSE: Memory management
36 * Description: Interfaces in this file are completely described in
37 *		the DAPL 1.1 API, Chapter 6, section 6
38 *
39 */
40
41#include "dapl_rmr_util.h"
42#include "dapl_adapter_util.h"
43
44/*
45 * dapl_rmr_create
46 *
47 * DAPL Requirements Version xxx, 6.6.4.1
48 *
49 * Create a remote memory region for the specified protection zone
50 *
51 * Input:
52 * 	pz_handle
53 *
54 * Output:
55 * 	rmr_handle
56 *
57 * Returns:
58 * 	DAT_SUCCESS
59 * 	DAT_INSUFFICIENT_RESOURCES
60 * 	DAT_INVALID_PARAMETER
61 */
62DAT_RETURN
63dapl_rmr_create(IN DAT_PZ_HANDLE pz_handle,
64		OUT DAT_RMR_HANDLE * rmr_handle)
65{
66	DAPL_PZ *pz;
67	DAPL_RMR *rmr;
68	DAT_RETURN dat_status;
69
70	dat_status = DAT_SUCCESS;
71
72	if (DAPL_BAD_HANDLE(pz_handle, DAPL_MAGIC_PZ)) {
73		dat_status = DAT_ERROR(DAT_INVALID_HANDLE,
74		    DAT_INVALID_HANDLE_PZ);
75		goto bail;
76	}
77
78	pz = (DAPL_PZ *) pz_handle;
79
80	rmr = dapl_rmr_alloc(pz);
81
82	if (rmr == NULL) {
83		dat_status = DAT_ERROR(DAT_INSUFFICIENT_RESOURCES,
84		    DAT_RESOURCE_MEMORY);
85		goto bail;
86	}
87
88	dat_status = dapls_ib_mw_alloc(rmr);
89
90	if (dat_status != DAT_SUCCESS) {
91		dapl_rmr_dealloc(rmr);
92		dat_status = DAT_ERROR(DAT_INSUFFICIENT_RESOURCES,
93		    DAT_RESOURCE_MEMORY_REGION);
94		goto bail;
95	}
96
97	(void) dapl_os_atomic_inc(&pz->pz_ref_count);
98
99	*rmr_handle = rmr;
100
101bail:
102	return (dat_status);
103}
104