dapl_lmr_free.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_lmr_free.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_lmr_util.h" 42#include "dapl_adapter_util.h" 43#include "dapl_ia_util.h" 44 45/* 46 * dapl_lmr_free 47 * 48 * DAPL Requirements Version xxx, 6.6.3.2 49 * 50 * Destroy an instance of the Local Memory Region 51 * 52 * Input: 53 * lmr_handle 54 * 55 * Output: 56 * 57 * Returns: 58 * DAT_SUCCESS 59 * DAT_INVALID_HANDLE 60 * DAT_INVALID_PARAMETER 61 * DAT_INVALID_STATE 62 */ 63 64DAT_RETURN 65dapl_lmr_free(IN DAT_LMR_HANDLE lmr_handle) 66{ 67 DAPL_LMR *lmr; 68 DAT_RETURN dat_status; 69 70 dapl_dbg_log(DAPL_DBG_TYPE_API, "dapl_lmr_free (%p)\n", lmr_handle); 71 72 if (DAPL_BAD_HANDLE(lmr_handle, DAPL_MAGIC_LMR)) { 73 dat_status = DAT_ERROR(DAT_INVALID_HANDLE, 74 DAT_INVALID_HANDLE_LMR); 75 goto bail; 76 } 77 78 lmr = (DAPL_LMR *)lmr_handle; 79 80 switch (lmr->param.mem_type) { 81 case DAT_MEM_TYPE_VIRTUAL: 82 /* fall through */ 83 case DAT_MEM_TYPE_LMR: { 84 DAPL_PZ *pz; 85 86 if (0 != lmr->lmr_ref_count) { 87 return (DAT_INVALID_STATE); 88 } 89 90 dat_status = dapls_hash_remove( 91 lmr->header.owner_ia->hca_ptr->lmr_hash_table, 92 lmr->param.lmr_context, NULL); 93 if (dat_status != DAT_SUCCESS) { 94 goto bail; 95 } 96 97 dat_status = dapls_ib_mr_deregister(lmr); 98 99 if (dat_status == DAT_SUCCESS) { 100 pz = (DAPL_PZ *) lmr->param.pz_handle; 101 (void) dapl_os_atomic_dec(&pz->pz_ref_count); 102 103 dapl_lmr_dealloc(lmr); 104 } else { 105 /* 106 * Deregister failed; put it back in the 107 * hash table. 108 */ 109 (void) dapls_hash_insert(lmr->header.owner_ia-> 110 hca_ptr->lmr_hash_table, 111 lmr->param.lmr_context, lmr); 112 } 113 break; 114 } 115 case DAT_MEM_TYPE_SHARED_VIRTUAL: { 116 dat_status = DAT_ERROR(DAT_NOT_IMPLEMENTED, 0); 117 break; 118 } 119 default: 120 dat_status = DAT_ERROR(DAT_INVALID_PARAMETER, 121 DAT_INVALID_ARG1); 122 break; 123 } 124bail: 125 return (dat_status); 126} 127