dapl_evd_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 2004 Sun Microsystems, Inc.  All rights reserved.
28 * Use is subject to license terms.
29 */
30
31/*
32 *
33 * MODULE: dapl_evd_create.c
34 *
35 * PURPOSE: EVENT management
36 *
37 * Description: Interfaces in this file are completely defined in
38 * 		the uDAPL 1.1 API, Chapter 6, section 3
39 *
40 * $Id: dapl_evd_create.c,v 1.12 2003/08/06 14:04:27 sjs2 Exp $
41 */
42
43#include "dapl.h"
44#include "dapl_evd_util.h"
45
46/*
47 * dapl_evd_create
48 *
49 * DAPL Requirements Version xxx, 6.3.2.1
50 *
51 * Create and instance of Event Dispatcher.
52 *
53 * Input:
54 *    ia_handle
55 *    cno_handle
56 *    evd_min_qlen
57 *    evd_flags
58 *
59 * Output:
60 *    evd_handle
61 *
62 * Returns:
63 *     DAT_SUCCESS
64 *     DAT_INSUFFICIENT_RESOURCES
65 *     DAT_INVALID_PARAMETER
66 */
67
68/*
69 * ** REVISIT **
70 *
71 * Selecting the cqe handing domain must still be done.
72 * We *probably* want one per hca, but we could have one
73 * per provider or one per consumer.
74 */
75/*
76 * Note that if there already is a cq, it is not deleted
77 * even if it is not required. However, it will not be armed.
78 */
79
80DAT_RETURN dapl_evd_create(
81    IN    DAT_IA_HANDLE		ia_handle,
82    IN    DAT_COUNT		evd_min_qlen,
83    IN    DAT_CNO_HANDLE	cno_handle,
84    IN    DAT_EVD_FLAGS		evd_flags,
85    OUT   DAT_EVD_HANDLE	*evd_handle)
86{
87	DAPL_IA			*ia_ptr;
88	DAPL_EVD		*evd_ptr;
89	DAPL_CNO		*cno_ptr;
90	DAT_RETURN		dat_status;
91	DAT_PROVIDER_ATTR	provider_attr = {0};
92	int			i;
93	int			j;
94	DAT_EVD_FLAGS		mask[6] = {DAT_EVD_SOFTWARE_FLAG,
95	    DAT_EVD_CR_FLAG, DAT_EVD_DTO_FLAG, DAT_EVD_CONNECTION_FLAG,
96	    DAT_EVD_RMR_BIND_FLAG, DAT_EVD_ASYNC_FLAG};
97
98	dapl_dbg_log(DAPL_DBG_TYPE_API,
99	    "dapl_evd_create (%p, %d, %p, 0x%x, %p)\n",
100	    ia_handle,
101	    evd_min_qlen,
102	    cno_handle,
103	    evd_flags,
104	    evd_handle);
105
106	ia_ptr		= (DAPL_IA *)ia_handle;
107	cno_ptr		= (DAPL_CNO *)cno_handle;
108	evd_ptr		= NULL;
109	*evd_handle	= NULL;
110	dat_status	= DAT_SUCCESS;
111
112	if (DAPL_BAD_HANDLE(ia_handle, DAPL_MAGIC_IA)) {
113		dat_status = DAT_ERROR(DAT_INVALID_HANDLE,
114		    DAT_INVALID_HANDLE_IA);
115		goto bail;
116	}
117
118	if (evd_min_qlen <= 0) {
119		dat_status = DAT_ERROR(DAT_INVALID_PARAMETER, DAT_INVALID_ARG2);
120		goto bail;
121	}
122	if (evd_min_qlen > ia_ptr->hca_ptr->ia_attr.max_evd_qlen) {
123		dat_status = DAT_ERROR(DAT_INSUFFICIENT_RESOURCES,
124		    DAT_RESOURCE_TEVD);
125		goto bail;
126	}
127
128	if ((cno_handle != DAT_HANDLE_NULL) &&
129	    DAPL_BAD_HANDLE(cno_handle, DAPL_MAGIC_CNO)) {
130		dat_status = DAT_ERROR(DAT_INVALID_HANDLE,
131		    DAT_INVALID_HANDLE_CNO);
132		goto bail;
133	}
134
135	/*
136	 * Check the merging attributes to ensure the combination of
137	 * flags requested is supported.
138	 */
139	(void) dapl_ia_query(ia_handle, NULL,
140	    0, NULL,
141	    DAT_PROVIDER_FIELD_ALL, &provider_attr);
142
143
144	for (i = 0; i < 6; i++) {
145		if (mask[i] & evd_flags) {
146			for (j = i; j < 6; j++) {
147				if (mask[j] & evd_flags) {
148					if (provider_attr.
149					    evd_stream_merging_supported[i][j]
150					    == DAT_FALSE) {
151						dat_status = DAT_ERROR(
152						    DAT_INVALID_PARAMETER,
153						    DAT_INVALID_ARG4);
154						goto bail;
155					}
156				}
157			} /* end for j */
158		}
159	} /* end for i */
160
161	dat_status = dapls_evd_internal_create(ia_ptr,
162	    cno_ptr,
163	    evd_min_qlen,
164	    evd_flags,
165	    &evd_ptr);
166	if (dat_status != DAT_SUCCESS) {
167		goto bail;
168	}
169
170	evd_ptr->evd_state = DAPL_EVD_STATE_OPEN;
171
172	*evd_handle = (DAT_EVD_HANDLE) evd_ptr;
173
174bail:
175	if (dat_status != DAT_SUCCESS) {
176		if (evd_ptr) {
177			(void) dapl_evd_free(evd_ptr);
178		}
179	}
180
181	dapl_dbg_log(DAPL_DBG_TYPE_RTN,
182	    "dapl_evd_create () returns 0x%x\n",
183	    dat_status);
184
185	return (dat_status);
186}
187