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_rsp_create.c
34 *
35 * PURPOSE: Connection management
36 * Description: Interfaces in this file are completely described in
37 * the DAPL 1.1 API, Chapter 6, section 4
38 *
39 * $Id: dapl_rsp_create.c,v 1.14 2003/07/25 19:24:11 sjs2 Exp $
40 */
41
42 #include "dapl.h"
43 #include "dapl_sp_util.h"
44 #include "dapl_ia_util.h"
45 #include "dapl_ep_util.h"
46 #include "dapl_adapter_util.h"
47
48 /*
49 * dapl_rsp_create
50 *
51 * uDAPL: User Direct Access Program Library Version 1.1, 6.4.3.4.1
52 *
53 * Create a Resereved Service Point with the specified Endpoint
54 * that generates at most one Connection Request that is
55 * delivered to the specified Event Dispatcher in a notification
56 * event
57 *
58 * Input:
59 * ia_handle
60 * conn_qual
61 * ep_handle
62 * evd_handle
63 *
64 * Output:
65 * rsp_handle
66 *
67 * Returns:
68 * DAT_SUCCESS
69 * DAT_INSUFFICIENT_RESOURCES
70 * DAT_INVALID_PARAMETER
71 * DAT_INVALID_STATE
72 * DAT_CONN_QUAL_IN_USE
73 */
74 DAT_RETURN
dapl_rsp_create(IN DAT_IA_HANDLE ia_handle,IN DAT_CONN_QUAL conn_qual,IN DAT_EP_HANDLE ep_handle,IN DAT_EVD_HANDLE evd_handle,OUT DAT_RSP_HANDLE * rsp_handle)75 dapl_rsp_create(
76 IN DAT_IA_HANDLE ia_handle,
77 IN DAT_CONN_QUAL conn_qual,
78 IN DAT_EP_HANDLE ep_handle,
79 IN DAT_EVD_HANDLE evd_handle,
80 OUT DAT_RSP_HANDLE *rsp_handle)
81 {
82 DAPL_IA *ia_ptr;
83 DAPL_SP *sp_ptr;
84 DAPL_EVD *evd_ptr;
85 DAPL_EP *ep_ptr;
86 DAT_BOOLEAN sp_found;
87 DAT_RETURN dat_status;
88
89 dat_status = DAT_SUCCESS;
90 ia_ptr = (DAPL_IA *)ia_handle;
91
92 dapl_dbg_log(DAPL_DBG_TYPE_CM,
93 ">>> dapl_rsp_free conn_qual: %x EP: %p\n",
94 conn_qual, ep_handle);
95
96 if (DAPL_BAD_HANDLE(ia_ptr, DAPL_MAGIC_IA)) {
97 dat_status = DAT_ERROR(DAT_INVALID_HANDLE,
98 DAT_INVALID_HANDLE_IA);
99 goto bail;
100 }
101 if (DAPL_BAD_HANDLE(ep_handle, DAPL_MAGIC_EP)) {
102 dat_status = DAT_ERROR(DAT_INVALID_HANDLE,
103 DAT_INVALID_HANDLE_EP);
104 goto bail;
105 }
106 if (DAPL_BAD_HANDLE(evd_handle, DAPL_MAGIC_EVD)) {
107 dat_status = DAT_ERROR(DAT_INVALID_HANDLE,
108 DAT_INVALID_HANDLE_EVD_CR);
109 goto bail;
110 }
111
112 if (rsp_handle == NULL) {
113 dat_status = DAT_ERROR(DAT_INVALID_PARAMETER, DAT_INVALID_ARG5);
114 goto bail;
115 }
116
117 ep_ptr = (DAPL_EP *) ep_handle;
118 if (ep_ptr->param.ep_state != DAT_EP_STATE_UNCONNECTED) {
119 dat_status = DAT_ERROR(DAT_INVALID_STATE,
120 dapls_ep_state_subtype(ep_ptr));
121 goto bail;
122 }
123
124 evd_ptr = (DAPL_EVD *)evd_handle;
125 if (!(evd_ptr->evd_flags & DAT_EVD_CR_FLAG)) {
126 dat_status = DAT_ERROR(DAT_INVALID_HANDLE,
127 DAT_INVALID_HANDLE_EVD_CR);
128 goto bail;
129 }
130
131 sp_ptr = dapls_ia_sp_search(ia_ptr, conn_qual, DAT_FALSE);
132 sp_found = DAT_TRUE;
133 if (sp_ptr == NULL) {
134 sp_found = DAT_FALSE;
135
136 /* Allocate RSP */
137 sp_ptr = dapls_sp_alloc(ia_ptr, DAT_FALSE);
138 if (sp_ptr == NULL) {
139 dat_status = DAT_ERROR(DAT_INSUFFICIENT_RESOURCES,
140 DAT_RESOURCE_MEMORY);
141 goto bail;
142 }
143 }
144
145 /*
146 * Fill out the RSP args
147 */
148 sp_ptr->ia_handle = ia_handle;
149 sp_ptr->conn_qual = conn_qual;
150 sp_ptr->evd_handle = evd_handle;
151 sp_ptr->psp_flags = 0;
152 sp_ptr->ep_handle = ep_handle;
153
154 /*
155 * Take a reference on the EVD handle
156 */
157 dapl_os_atomic_inc(&((DAPL_EVD *)evd_handle)->evd_ref_count);
158
159 /*
160 * Update the EP state indicating the provider now owns it
161 */
162 ep_ptr->param.ep_state = DAT_EP_STATE_RESERVED;
163
164 /*
165 * Set up a listener for a connection. Connections can arrive
166 * even before this call returns!
167 */
168 sp_ptr->state = DAPL_SP_STATE_RSP_LISTENING;
169 sp_ptr->listening = DAT_TRUE;
170
171 if (sp_found == DAT_FALSE) {
172 /* Link it onto the IA */
173 dapl_ia_link_rsp(ia_ptr, sp_ptr);
174
175 dat_status = dapls_ib_setup_conn_listener(ia_ptr, conn_qual,
176 sp_ptr);
177
178 if (dat_status != DAT_SUCCESS) {
179 /*
180 * Have a problem setting up the connection, something
181 * wrong!
182 * rsp_free will decrement the EVD refcount. Set
183 * listening to * false to avoid tearing down the
184 * conn_listener which didn't * get set up.
185 */
186 sp_ptr->listening = DAT_FALSE;
187 (void) dapl_rsp_free((DAT_RSP_HANDLE) sp_ptr);
188
189 dapl_dbg_log(DAPL_DBG_TYPE_CM,
190 "--> dapl_rsp_create setup_conn_listener failed: "
191 "%x\n",
192 dat_status);
193
194 goto bail;
195 }
196 }
197
198 /*
199 * Return handle to the user
200 */
201 *rsp_handle = (DAT_RSP_HANDLE)sp_ptr;
202
203 bail:
204 return (dat_status);
205 }
206