osm_resp.c revision 329564 
1/*
2 * Copyright (c) 2004-2009 Voltaire, Inc. All rights reserved.
3 * Copyright (c) 2002-2005 Mellanox Technologies LTD. All rights reserved.
4 * Copyright (c) 1996-2003 Intel Corporation. All rights reserved.
5 *
6 * This software is available to you under a choice of one of two
7 * licenses.  You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
11 *
12 *     Redistribution and use in source and binary forms, with or
13 *     without modification, are permitted provided that the following
14 *     conditions are met:
15 *
16 *      - Redistributions of source code must retain the above
17 *        copyright notice, this list of conditions and the following
18 *        disclaimer.
19 *
20 *      - Redistributions in binary form must reproduce the above
21 *        copyright notice, this list of conditions and the following
22 *        disclaimer in the documentation and/or other materials
23 *        provided with the distribution.
24 *
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 * SOFTWARE.
33 *
34 */
35
36/*
37 * Abstract:
38 *    Implementation of osm_resp_t.
39 * This object represents the generic attribute responder.
40 * This object is part of the opensm family of objects.
41 */
42
43#if HAVE_CONFIG_H
44#  include <config.h>
45#endif				/* HAVE_CONFIG_H */
46
47#include <string.h>
48#include <iba/ib_types.h>
49#include <complib/cl_debug.h>
50#include <opensm/osm_file_ids.h>
51#define FILE_ID OSM_FILE_RESP_C
52#include <opensm/osm_madw.h>
53#include <opensm/osm_attrib_req.h>
54#include <opensm/osm_log.h>
55#include <opensm/osm_helper.h>
56#include <opensm/osm_mad_pool.h>
57#include <opensm/osm_vl15intf.h>
58#include <opensm/osm_msgdef.h>
59#include <opensm/osm_opensm.h>
60
61static void resp_make_resp_smp(IN osm_sm_t * sm, IN const ib_smp_t * p_src_smp,
62			       IN ib_net16_t status,
63			       IN const uint8_t * p_payload,
64			       OUT ib_smp_t * p_dest_smp)
65{
66	OSM_LOG_ENTER(sm->p_log);
67
68	CL_ASSERT(p_dest_smp);
69	CL_ASSERT(p_src_smp);
70	CL_ASSERT(!ib_smp_is_response(p_src_smp));
71
72	*p_dest_smp = *p_src_smp;
73	if (p_src_smp->method == IB_MAD_METHOD_GET ||
74	    p_src_smp->method == IB_MAD_METHOD_SET) {
75		p_dest_smp->method = IB_MAD_METHOD_GET_RESP;
76		p_dest_smp->status = status;
77	} else if (p_src_smp->method == IB_MAD_METHOD_TRAP) {
78		p_dest_smp->method = IB_MAD_METHOD_TRAP_REPRESS;
79		p_dest_smp->status = 0;
80	} else {
81		OSM_LOG(sm->p_log, OSM_LOG_ERROR, "ERR 1302: "
82			"src smp method unsupported 0x%X\n", p_src_smp->method);
83		goto Exit;
84	}
85
86	if (p_src_smp->mgmt_class == IB_MCLASS_SUBN_DIR)
87		p_dest_smp->status |= IB_SMP_DIRECTION;
88
89	p_dest_smp->dr_dlid = p_dest_smp->dr_slid;
90	p_dest_smp->dr_slid = p_dest_smp->dr_dlid;
91	memcpy(&p_dest_smp->data, p_payload, IB_SMP_DATA_SIZE);
92
93Exit:
94	OSM_LOG_EXIT(sm->p_log);
95}
96
97ib_api_status_t osm_resp_send(IN osm_sm_t * sm,
98			      IN const osm_madw_t * p_req_madw,
99			      IN ib_net16_t mad_status,
100			      IN const uint8_t * p_payload)
101{
102	const ib_smp_t *p_req_smp;
103	ib_smp_t *p_smp;
104	osm_madw_t *p_madw;
105	ib_api_status_t status = IB_SUCCESS;
106
107	OSM_LOG_ENTER(sm->p_log);
108
109	CL_ASSERT(p_req_madw);
110	CL_ASSERT(p_payload);
111
112	/* do nothing if we are exiting ... */
113	if (osm_exit_flag)
114		goto Exit;
115
116	p_madw = osm_mad_pool_get(sm->p_mad_pool,
117				  osm_madw_get_bind_handle(p_req_madw),
118				  MAD_BLOCK_SIZE, NULL);
119
120	if (p_madw == NULL) {
121		OSM_LOG(sm->p_log, OSM_LOG_ERROR,
122			"ERR 1301: Unable to acquire MAD\n");
123		status = IB_INSUFFICIENT_RESOURCES;
124		goto Exit;
125	}
126
127	/*
128	   Copy the request smp to the response smp, then just
129	   update the necessary fields.
130	 */
131	p_smp = osm_madw_get_smp_ptr(p_madw);
132	p_req_smp = osm_madw_get_smp_ptr(p_req_madw);
133	resp_make_resp_smp(sm, p_req_smp, mad_status, p_payload, p_smp);
134	p_madw->mad_addr.dest_lid =
135	    p_req_madw->mad_addr.addr_type.smi.source_lid;
136	p_madw->mad_addr.addr_type.smi.source_lid =
137	    p_req_madw->mad_addr.dest_lid;
138
139	p_madw->resp_expected = FALSE;
140	p_madw->fail_msg = CL_DISP_MSGID_NONE;
141
142	OSM_LOG(sm->p_log, OSM_LOG_DEBUG, "Responding to %s (0x%X)"
143		"\n\t\t\t\tattribute modifier 0x%X, TID 0x%" PRIx64 "\n",
144		ib_get_sm_attr_str(p_smp->attr_id), cl_ntoh16(p_smp->attr_id),
145		cl_ntoh32(p_smp->attr_mod), cl_ntoh64(p_smp->trans_id));
146
147	osm_vl15_post(sm->p_vl15, p_madw);
148
149Exit:
150	OSM_LOG_EXIT(sm->p_log);
151	return status;
152}
153