osm_vl_arb_rcv.c revision 326169 
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 * Copyright (c) 2010 HNR Consulting. All rights reserved.
6 * Copyright (c) 2010 Sun Microsystems, Inc. All rights reserved.
7 *
8 * This software is available to you under a choice of one of two
9 * licenses.  You may choose to be licensed under the terms of the GNU
10 * General Public License (GPL) Version 2, available from the file
11 * COPYING in the main directory of this source tree, or the
12 * OpenIB.org BSD license below:
13 *
14 *     Redistribution and use in source and binary forms, with or
15 *     without modification, are permitted provided that the following
16 *     conditions are met:
17 *
18 *      - Redistributions of source code must retain the above
19 *        copyright notice, this list of conditions and the following
20 *        disclaimer.
21 *
22 *      - Redistributions in binary form must reproduce the above
23 *        copyright notice, this list of conditions and the following
24 *        disclaimer in the documentation and/or other materials
25 *        provided with the distribution.
26 *
27 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
28 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
29 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
30 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
31 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
32 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
33 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
34 * SOFTWARE.
35 *
36 */
37
38/*
39 * Abstract:
40 *    Implementation of osm_vla_rcv_t.
41 * This object represents the Vl Arbitration Receiver object.
42 * This object is part of the opensm family of objects.
43 */
44
45#if HAVE_CONFIG_H
46#  include <config.h>
47#endif				/* HAVE_CONFIG_H */
48
49#include <string.h>
50#include <iba/ib_types.h>
51#include <complib/cl_passivelock.h>
52#include <complib/cl_debug.h>
53#include <opensm/osm_file_ids.h>
54#define FILE_ID OSM_FILE_VL_ARB_RCV_C
55#include <opensm/osm_madw.h>
56#include <opensm/osm_log.h>
57#include <opensm/osm_node.h>
58#include <opensm/osm_subnet.h>
59#include <opensm/osm_helper.h>
60#include <opensm/osm_sm.h>
61
62/*
63 * WE ONLY RECEIVE GET or SET responses
64 */
65void osm_vla_rcv_process(IN void *context, IN void *data)
66{
67	osm_sm_t *sm = context;
68	osm_madw_t *p_madw = data;
69	ib_vl_arb_table_t *p_vla_tbl;
70	ib_smp_t *p_smp;
71	osm_port_t *p_port;
72	osm_physp_t *p_physp;
73	osm_node_t *p_node;
74	osm_vla_context_t *p_context;
75	ib_net64_t port_guid;
76	ib_net64_t node_guid;
77	uint8_t port_num, block_num;
78
79	CL_ASSERT(sm);
80
81	OSM_LOG_ENTER(sm->p_log);
82
83	CL_ASSERT(p_madw);
84
85	p_smp = osm_madw_get_smp_ptr(p_madw);
86
87	p_context = osm_madw_get_vla_context_ptr(p_madw);
88	p_vla_tbl = ib_smp_get_payload_ptr(p_smp);
89
90	port_guid = p_context->port_guid;
91	node_guid = p_context->node_guid;
92
93	CL_ASSERT(p_smp->attr_id == IB_MAD_ATTR_VL_ARBITRATION);
94
95	if (ib_smp_get_status(p_smp)) {
96		OSM_LOG(sm->p_log, OSM_LOG_DEBUG,
97			"MAD status 0x%x received\n",
98			cl_ntoh16(ib_smp_get_status(p_smp)));
99		goto Exit2;
100	}
101
102	cl_plock_excl_acquire(sm->p_lock);
103	p_port = osm_get_port_by_guid(sm->p_subn, port_guid);
104	if (!p_port) {
105		OSM_LOG(sm->p_log, OSM_LOG_ERROR, "ERR 3F06: "
106			"No port object for port with GUID 0x%" PRIx64
107			"\n\t\t\t\tfor parent node GUID 0x%" PRIx64
108			", TID 0x%" PRIx64 "\n", cl_ntoh64(port_guid),
109			cl_ntoh64(node_guid), cl_ntoh64(p_smp->trans_id));
110		goto Exit;
111	}
112
113	p_node = p_port->p_node;
114	CL_ASSERT(p_node);
115
116	block_num = (uint8_t) (cl_ntoh32(p_smp->attr_mod) >> 16);
117	/* in case of a non switch node the attr modifier should be ignored */
118	if (osm_node_get_type(p_node) == IB_NODE_TYPE_SWITCH) {
119		port_num = (uint8_t) (cl_ntoh32(p_smp->attr_mod) & 0x000000FF);
120		p_physp = osm_node_get_physp_ptr(p_node, port_num);
121	} else {
122		p_physp = p_port->p_physp;
123		port_num = p_physp->port_num;
124	}
125
126	/*
127	   We do not care if this is a result of a set or get -
128	   all we want is to update the subnet.
129	 */
130	OSM_LOG(sm->p_log, OSM_LOG_VERBOSE,
131		"Got GetResp(VLArb) block:%u port_num %u with GUID 0x%"
132		PRIx64 " for parent node GUID 0x%" PRIx64 ", TID 0x%"
133		PRIx64 "\n", block_num, port_num, cl_ntoh64(port_guid),
134		cl_ntoh64(node_guid), cl_ntoh64(p_smp->trans_id));
135
136	/*
137	   Determine if we encountered a new Physical Port.
138	   If so, Ignore it.
139	 */
140	if (!p_physp) {
141		OSM_LOG(sm->p_log, OSM_LOG_ERROR,
142			"Got invalid port number %u\n", port_num);
143		goto Exit;
144	}
145
146	if ((block_num < 1) || (block_num > 4)) {
147		OSM_LOG(sm->p_log, OSM_LOG_ERROR,
148			"Got invalid block number 0x%X\n", block_num);
149		goto Exit;
150	}
151
152	osm_dump_vl_arb_table_v2(sm->p_log, port_guid, block_num, port_num,
153			         p_vla_tbl, FILE_ID, OSM_LOG_DEBUG);
154	osm_physp_set_vla_tbl(p_physp, p_vla_tbl, block_num);
155
156Exit:
157	cl_plock_release(sm->p_lock);
158
159Exit2:
160	OSM_LOG_EXIT(sm->p_log);
161}
162