1*9e39c5baSBill Taylor /*
2*9e39c5baSBill Taylor * CDDL HEADER START
3*9e39c5baSBill Taylor *
4*9e39c5baSBill Taylor * The contents of this file are subject to the terms of the
5*9e39c5baSBill Taylor * Common Development and Distribution License (the "License").
6*9e39c5baSBill Taylor * You may not use this file except in compliance with the License.
7*9e39c5baSBill Taylor *
8*9e39c5baSBill Taylor * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9*9e39c5baSBill Taylor * or http://www.opensolaris.org/os/licensing.
10*9e39c5baSBill Taylor * See the License for the specific language governing permissions
11*9e39c5baSBill Taylor * and limitations under the License.
12*9e39c5baSBill Taylor *
13*9e39c5baSBill Taylor * When distributing Covered Code, include this CDDL HEADER in each
14*9e39c5baSBill Taylor * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15*9e39c5baSBill Taylor * If applicable, add the following below this CDDL HEADER, with the
16*9e39c5baSBill Taylor * fields enclosed by brackets "[]" replaced with your own identifying
17*9e39c5baSBill Taylor * information: Portions Copyright [yyyy] [name of copyright owner]
18*9e39c5baSBill Taylor *
19*9e39c5baSBill Taylor * CDDL HEADER END
20*9e39c5baSBill Taylor */
21*9e39c5baSBill Taylor
22*9e39c5baSBill Taylor /*
23*9e39c5baSBill Taylor * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
24*9e39c5baSBill Taylor * Use is subject to license terms.
25*9e39c5baSBill Taylor */
26*9e39c5baSBill Taylor
27*9e39c5baSBill Taylor /*
28*9e39c5baSBill Taylor *
29*9e39c5baSBill Taylor * MODULE: dapl_srq_util.c
30*9e39c5baSBill Taylor *
31*9e39c5baSBill Taylor * PURPOSE: Shared Receive Queue utility functions.
32*9e39c5baSBill Taylor *
33*9e39c5baSBill Taylor */
34*9e39c5baSBill Taylor
35*9e39c5baSBill Taylor #include "dapl.h"
36*9e39c5baSBill Taylor #include "dapl_cookie.h"
37*9e39c5baSBill Taylor #include "dapl_srq_util.h"
38*9e39c5baSBill Taylor
39*9e39c5baSBill Taylor /*
40*9e39c5baSBill Taylor * dapl_srq_alloc
41*9e39c5baSBill Taylor *
42*9e39c5baSBill Taylor * Allocate SRQ structure.
43*9e39c5baSBill Taylor *
44*9e39c5baSBill Taylor * Input:
45*9e39c5baSBill Taylor * IA, srq_attr
46*9e39c5baSBill Taylor *
47*9e39c5baSBill Taylor * Output:
48*9e39c5baSBill Taylor * none
49*9e39c5baSBill Taylor *
50*9e39c5baSBill Taylor * Returns:
51*9e39c5baSBill Taylor * Pointer to alloted SRQ
52*9e39c5baSBill Taylor *
53*9e39c5baSBill Taylor */
54*9e39c5baSBill Taylor DAPL_SRQ *
dapl_srq_alloc(IN DAPL_IA * ia_ptr,IN const DAT_SRQ_ATTR * srq_attr)55*9e39c5baSBill Taylor dapl_srq_alloc(IN DAPL_IA *ia_ptr, IN const DAT_SRQ_ATTR *srq_attr)
56*9e39c5baSBill Taylor {
57*9e39c5baSBill Taylor DAPL_SRQ *srq_ptr;
58*9e39c5baSBill Taylor DAT_RETURN retval;
59*9e39c5baSBill Taylor
60*9e39c5baSBill Taylor /* Allocate SRQ */
61*9e39c5baSBill Taylor srq_ptr = (DAPL_SRQ *)dapl_os_alloc(sizeof (DAPL_SRQ));
62*9e39c5baSBill Taylor if (srq_ptr == NULL) {
63*9e39c5baSBill Taylor goto bail;
64*9e39c5baSBill Taylor }
65*9e39c5baSBill Taylor
66*9e39c5baSBill Taylor /* zero the structure */
67*9e39c5baSBill Taylor (void) dapl_os_memzero(srq_ptr, sizeof (DAPL_SRQ));
68*9e39c5baSBill Taylor
69*9e39c5baSBill Taylor /*
70*9e39c5baSBill Taylor * initialize the header
71*9e39c5baSBill Taylor */
72*9e39c5baSBill Taylor srq_ptr->header.provider = ia_ptr->header.provider;
73*9e39c5baSBill Taylor srq_ptr->header.magic = DAPL_MAGIC_SRQ;
74*9e39c5baSBill Taylor srq_ptr->header.handle_type = DAT_HANDLE_TYPE_SRQ;
75*9e39c5baSBill Taylor srq_ptr->header.owner_ia = ia_ptr;
76*9e39c5baSBill Taylor srq_ptr->header.user_context.as_64 = 0;
77*9e39c5baSBill Taylor dapl_llist_init_entry(&srq_ptr->header.ia_list_entry);
78*9e39c5baSBill Taylor dapl_os_lock_init(&srq_ptr->header.lock);
79*9e39c5baSBill Taylor
80*9e39c5baSBill Taylor /* The SRQ ptr is stored in the cookies */
81*9e39c5baSBill Taylor retval = dapls_cb_create(&srq_ptr->recv_buffer, srq_ptr,
82*9e39c5baSBill Taylor DAPL_COOKIE_QUEUE_SRQ, srq_attr->max_recv_dtos);
83*9e39c5baSBill Taylor if (retval != DAT_SUCCESS) {
84*9e39c5baSBill Taylor dapl_dbg_log(DAPL_DBG_TYPE_ERR, "dapls_srq_alloc cb_create "
85*9e39c5baSBill Taylor "failed %d\n", retval);
86*9e39c5baSBill Taylor dapl_srq_dealloc(srq_ptr);
87*9e39c5baSBill Taylor srq_ptr = NULL;
88*9e39c5baSBill Taylor goto bail;
89*9e39c5baSBill Taylor }
90*9e39c5baSBill Taylor
91*9e39c5baSBill Taylor bail:
92*9e39c5baSBill Taylor return (srq_ptr);
93*9e39c5baSBill Taylor }
94*9e39c5baSBill Taylor
95*9e39c5baSBill Taylor /*
96*9e39c5baSBill Taylor * dapl_srq_dealloc
97*9e39c5baSBill Taylor *
98*9e39c5baSBill Taylor * Free the passed in SRQ structure.
99*9e39c5baSBill Taylor *
100*9e39c5baSBill Taylor * Input:
101*9e39c5baSBill Taylor * entry point pointer
102*9e39c5baSBill Taylor *
103*9e39c5baSBill Taylor * Output:
104*9e39c5baSBill Taylor * none
105*9e39c5baSBill Taylor *
106*9e39c5baSBill Taylor * Returns:
107*9e39c5baSBill Taylor * none
108*9e39c5baSBill Taylor *
109*9e39c5baSBill Taylor */
110*9e39c5baSBill Taylor void
dapl_srq_dealloc(IN DAPL_SRQ * srq_ptr)111*9e39c5baSBill Taylor dapl_srq_dealloc(IN DAPL_SRQ *srq_ptr)
112*9e39c5baSBill Taylor {
113*9e39c5baSBill Taylor dapl_os_assert(srq_ptr->header.magic == DAPL_MAGIC_SRQ);
114*9e39c5baSBill Taylor
115*9e39c5baSBill Taylor /* reset magic to prevent reuse */
116*9e39c5baSBill Taylor srq_ptr->header.magic = DAPL_MAGIC_INVALID;
117*9e39c5baSBill Taylor
118*9e39c5baSBill Taylor dapls_cb_free(&srq_ptr->recv_buffer);
119*9e39c5baSBill Taylor
120*9e39c5baSBill Taylor dapl_os_lock_destroy(&srq_ptr->header.lock);
121*9e39c5baSBill Taylor dapl_os_free(srq_ptr, sizeof (DAPL_SRQ));
122*9e39c5baSBill Taylor }
123