contrib/ofed/opensm/opensm/osm_resp.c

   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
  61 static 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
  93 Exit:
  94         OSM_LOG_EXIT(sm->p_log);
  95 }
  96
  97 ib_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
 149 Exit:
 150         OSM_LOG_EXIT(sm->p_log);
 151         return status;
 152 }