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_evd_qp_async_error_callback.c
34 *
35 * PURPOSE: implements QP callbacks from verbs
36 *
37 * $Id: dapl_evd_qp_async_error_callb.c,v 1.17 2003/07/31 13:55:18 hobie16 Exp $
38 */
39
40 #include "dapl.h"
41 #include "dapl_evd_util.h"
42 #include "dapl_adapter_util.h"
43
44 /*
45 * dapl_evd_qp_async_error_callback
46 *
47 * The callback function registered with verbs for qp async erros
48 *
49 * Input:
50 * ib_cm_handle,
51 * ib_cm_event
52 * cause_ptr
53 * context (evd)
54 *
55 * Output:
56 * None
57 *
58 */
59
60 void
dapl_evd_qp_async_error_callback(IN ib_hca_handle_t ib_hca_handle,IN ib_qp_handle_t ib_qp_handle,IN ib_error_record_t * cause_ptr,IN void * context)61 dapl_evd_qp_async_error_callback(
62 IN ib_hca_handle_t ib_hca_handle,
63 IN ib_qp_handle_t ib_qp_handle,
64 IN ib_error_record_t *cause_ptr,
65 IN void *context) /* ARGSUSED */
66
67 {
68 /*
69 * This is an affiliated error and hence should be able to
70 * supply us with exact information on the error type and QP.
71 *
72 * However the Mellanox and IBM APIs for registering this callback
73 * are different.
74 *
75 * The IBM API allows consumers to register the callback with
76 *
77 * ib_int32_t
78 * ib_set_qp_async_error_eh_us (
79 * ib_hca_handle_t hca_handle,
80 * ib_qp_async_handler_t handler )
81 *
82 * Notice that this function does not take a context. The context is
83 * specified per QP in the call to ib_qp_create_us().
84 *
85 * In contrast the Mellanox API requires that the context be specified
86 * when the funciton is registered:
87 *
88 * VAPI_ret_t
89 * VAPI_set_async_event_handler (
90 * IN VAPI_hca_hndl_t hca_hndl,
91 * IN VAPI_async_event_handler_t handler,
92 * IN void* private_data )
93 *
94 * Therefore we always specify the context as the asyncronous EVD
95 * to be compatible with both APIs.
96 */
97
98 DAPL_IA *ia_ptr;
99 DAPL_EP *ep_ptr;
100 DAPL_EVD *async_evd;
101 DAT_EVENT_NUMBER async_event;
102 DAT_RETURN dat_status;
103
104 ep_ptr = (DAPL_EP *) context;
105 ia_ptr = ep_ptr->header.owner_ia;
106 async_evd = (DAPL_EVD *) ia_ptr->async_error_evd;
107
108 dapl_dbg_log(DAPL_DBG_TYPE_CALLBACK | DAPL_DBG_TYPE_EXCEPTION,
109 "--> dapl_evd_qp_async_error_callback: ep %p qp %p (%x) state %d\n",
110 ep_ptr,
111 ep_ptr->qp_handle,
112 ep_ptr->qpn,
113 ep_ptr->param.ep_state);
114
115 /*
116 * Transition to ERROR if we are connected; other states need to
117 * complete first (e.g. pending states)
118 */
119 if (ep_ptr->param.ep_state == DAT_EP_STATE_CONNECTED) {
120 ep_ptr->param.ep_state = DAT_EP_STATE_ERROR;
121 }
122
123 dapl_os_assert(async_evd != NULL);
124
125 dat_status = dapls_ib_get_async_event(cause_ptr, &async_event);
126 if (dat_status == DAT_SUCCESS) {
127 /*
128 * If dapls_ib_get_async_event is not successful,
129 * an event has been generated by the provide that
130 * we are not interested in.
131 */
132 (void) dapls_evd_post_async_error_event(async_evd,
133 async_event,
134 async_evd->header.owner_ia);
135 }
136 dapl_dbg_log(DAPL_DBG_TYPE_CALLBACK | DAPL_DBG_TYPE_EXCEPTION,
137 "dapl_evd_qp_async_error_callback () returns\n");
138 }
139
140 /*
141 * Local variables:
142 * c-indent-level: 4
143 * c-basic-offset: 4
144 * tab-width: 8
145 * End:
146 */
147