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 2008 Sun Microsystems, Inc. All rights reserved. 28 * Use is subject to license terms. 29 */ 30 31 /* 32 * 33 * MODULE: dapl_evd_modify_cno.c 34 * 35 * PURPOSE: Event Management 36 * 37 * Description: Interfaces in this file are completely described in 38 * the DAPL 1.1 API, Chapter 6, section 3 39 * 40 * $Id: dapl_evd_modify_cno.c,v 1.10 2003/07/14 17:50:32 sjs2 Exp $ 41 */ 42 43 #include "dapl.h" 44 #include "dapl_adapter_util.h" 45 46 /* 47 * dapl_evd_modify_cno 48 * 49 * DAPL Requirements Version xxx, 6.3.2.4 50 * 51 * Modify the CNO associated with the EVD 52 * 53 * Input: 54 * evd_handle 55 * cno_handle 56 * 57 * Output: 58 * none 59 * 60 * Returns: 61 * DAT_SUCCSSS 62 * DAT_INVALID_HANDLE 63 */ 64 65 DAT_RETURN 66 dapl_evd_modify_cno( 67 IN DAT_EVD_HANDLE evd_handle, 68 IN DAT_CNO_HANDLE cno_handle) 69 { 70 DAPL_EVD *evd_ptr; 71 DAPL_CNO *cno_ptr; 72 DAPL_CNO *old_cno_ptr; 73 DAT_RETURN dat_status; 74 75 evd_ptr = (DAPL_EVD *)evd_handle; 76 cno_ptr = (DAPL_CNO *)cno_handle; 77 dat_status = DAT_SUCCESS; 78 79 if (DAPL_BAD_HANDLE(evd_handle, DAPL_MAGIC_EVD)) { 80 dat_status = DAT_ERROR(DAT_INVALID_HANDLE, 0); 81 goto bail; 82 } 83 84 /* cno_handle of DAT_HANDLE_NULL disassociated the EVD with any CNO */ 85 if ((cno_handle != DAT_HANDLE_NULL) && 86 DAPL_BAD_HANDLE(cno_handle, DAPL_MAGIC_CNO)) { 87 dat_status = DAT_ERROR(DAT_INVALID_HANDLE, 88 DAT_INVALID_HANDLE_CNO); 89 goto bail; 90 } 91 92 /* nothing to change */ 93 if (cno_ptr == evd_ptr->cno_ptr) { 94 dat_status = DAT_SUCCESS; 95 goto bail; 96 } 97 98 if (dapls_ib_modify_cno(evd_ptr, cno_ptr) != DAT_SUCCESS) { 99 dat_status = DAT_ERROR(DAT_INVALID_HANDLE, 0); 100 goto bail; 101 } 102 103 dapl_os_lock(&evd_ptr->header.lock); 104 old_cno_ptr = evd_ptr->cno_ptr; 105 evd_ptr->cno_ptr = cno_ptr; 106 dapl_os_unlock(&evd_ptr->header.lock); 107 108 /* 109 * We need to first remove the evd from the old CNO's list before 110 * adding it to the new CNO's list 111 */ 112 if (old_cno_ptr) { 113 dapl_os_lock(&(old_cno_ptr->header.lock)); 114 (void) dapl_llist_remove_entry(&old_cno_ptr->evd_list_head, 115 &evd_ptr->cno_list_entry); 116 dapl_os_atomic_dec(&(old_cno_ptr->cno_ref_count)); 117 dapl_os_unlock(&(old_cno_ptr->header.lock)); 118 119 } 120 121 if (cno_ptr) { 122 dapl_os_lock(&(cno_ptr->header.lock)); 123 dapl_llist_add_head(&cno_ptr->evd_list_head, 124 &evd_ptr->cno_list_entry, evd_ptr); 125 /* Take a reference count on the CNO */ 126 dapl_os_atomic_inc(&(cno_ptr->cno_ref_count)); 127 dapl_os_unlock(&cno_ptr->header.lock); 128 } 129 130 /* 131 * We need to enable the callback handler if the EVD has a CQ associated 132 * to it and is enabled. 133 */ 134 if ((evd_ptr->evd_flags & (DAT_EVD_DTO_FLAG | DAT_EVD_RMR_BIND_FLAG)) && 135 evd_ptr->evd_enabled && cno_handle != DAT_HANDLE_NULL) { 136 dat_status = DAPL_NOTIFY(evd_ptr)( 137 evd_ptr->ib_cq_handle, IB_NOTIFY_ON_NEXT_COMP, 0); 138 139 /* FIXME report error */ 140 dapl_os_assert(dat_status == DAT_SUCCESS); 141 } 142 143 bail: 144 return (dat_status); 145 } 146