/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
*
* MODULE: dapl_srq_util.c
*
* PURPOSE: Shared Receive Queue utility functions.
*
*/
#include "dapl.h"
#include "dapl_cookie.h"
#include "dapl_srq_util.h"
/*
* dapl_srq_alloc
*
* Allocate SRQ structure.
*
* Input:
* IA, srq_attr
*
* Output:
* none
*
* Returns:
* Pointer to alloted SRQ
*
*/
DAPL_SRQ *
dapl_srq_alloc(IN DAPL_IA *ia_ptr, IN const DAT_SRQ_ATTR *srq_attr)
{
DAPL_SRQ *srq_ptr;
DAT_RETURN retval;
/* Allocate SRQ */
srq_ptr = (DAPL_SRQ *)dapl_os_alloc(sizeof (DAPL_SRQ));
if (srq_ptr == NULL) {
goto bail;
}
/* zero the structure */
(void) dapl_os_memzero(srq_ptr, sizeof (DAPL_SRQ));
/*
* initialize the header
*/
srq_ptr->header.provider = ia_ptr->header.provider;
srq_ptr->header.magic = DAPL_MAGIC_SRQ;
srq_ptr->header.handle_type = DAT_HANDLE_TYPE_SRQ;
srq_ptr->header.owner_ia = ia_ptr;
srq_ptr->header.user_context.as_64 = 0;
dapl_llist_init_entry(&srq_ptr->header.ia_list_entry);
dapl_os_lock_init(&srq_ptr->header.lock);
/* The SRQ ptr is stored in the cookies */
retval = dapls_cb_create(&srq_ptr->recv_buffer, srq_ptr,
DAPL_COOKIE_QUEUE_SRQ, srq_attr->max_recv_dtos);
if (retval != DAT_SUCCESS) {
dapl_dbg_log(DAPL_DBG_TYPE_ERR, "dapls_srq_alloc cb_create "
"failed %d\n", retval);
dapl_srq_dealloc(srq_ptr);
srq_ptr = NULL;
goto bail;
}
bail:
return (srq_ptr);
}
/*
* dapl_srq_dealloc
*
* Free the passed in SRQ structure.
*
* Input:
* entry point pointer
*
* Output:
* none
*
* Returns:
* none
*
*/
void
dapl_srq_dealloc(IN DAPL_SRQ *srq_ptr)
{
dapl_os_assert(srq_ptr->header.magic == DAPL_MAGIC_SRQ);
/* reset magic to prevent reuse */
srq_ptr->header.magic = DAPL_MAGIC_INVALID;
dapls_cb_free(&srq_ptr->recv_buffer);
dapl_os_lock_destroy(&srq_ptr->header.lock);
dapl_os_free(srq_ptr, sizeof (DAPL_SRQ));
}