contrib/ofed/management/opensm/opensm/osm_sa_lft_record.c

   1 /*
   2  * Copyright (c) 2004-2008 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_lftr_rcv_t.
  39  *   This object represents the LinearForwardingTable Receiver object.
  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 <complib/cl_qlist.h>
  51 #include <vendor/osm_vendor_api.h>
  52 #include <opensm/osm_switch.h>
  53 #include <opensm/osm_helper.h>
  54 #include <opensm/osm_pkey.h>
  55 #include <opensm/osm_sa.h>
  56
  57 typedef struct osm_lftr_item {
  58         cl_list_item_t list_item;
  59         ib_lft_record_t rec;
  60 } osm_lftr_item_t;
  61
  62 typedef struct osm_lftr_search_ctxt {
  63         const ib_lft_record_t *p_rcvd_rec;
  64         ib_net64_t comp_mask;
  65         cl_qlist_t *p_list;
  66         osm_sa_t *sa;
  67         const osm_physp_t *p_req_physp;
  68 } osm_lftr_search_ctxt_t;
  69
  70 /**********************************************************************
  71  **********************************************************************/
  72 static ib_api_status_t
  73 __osm_lftr_rcv_new_lftr(IN osm_sa_t * sa,
  74                         IN const osm_switch_t * const p_sw,
  75                         IN cl_qlist_t * const p_list,
  76                         IN ib_net16_t const lid, IN uint16_t const block)
  77 {
  78         osm_lftr_item_t *p_rec_item;
  79         ib_api_status_t status = IB_SUCCESS;
  80
  81         OSM_LOG_ENTER(sa->p_log);
  82
  83         p_rec_item = malloc(sizeof(*p_rec_item));
  84         if (p_rec_item == NULL) {
  85                 OSM_LOG(sa->p_log, OSM_LOG_ERROR, "ERR 4402: "
  86                         "rec_item alloc failed\n");
  87                 status = IB_INSUFFICIENT_RESOURCES;
  88                 goto Exit;
  89         }
  90
  91         OSM_LOG(sa->p_log, OSM_LOG_DEBUG,
  92                 "New LinearForwardingTable: sw 0x%016" PRIx64
  93                 "\n\t\t\t\tblock 0x%02X lid %u\n",
  94                 cl_ntoh64(osm_node_get_node_guid(p_sw->p_node)),
  95                 block, cl_ntoh16(lid));
  96
  97         memset(p_rec_item, 0, sizeof(*p_rec_item));
  98
  99         p_rec_item->rec.lid = lid;
 100         p_rec_item->rec.block_num = cl_hton16(block);
 101
 102         /* copy the lft block */
 103         osm_switch_get_lft_block(p_sw, block, p_rec_item->rec.lft);
 104
 105         cl_qlist_insert_tail(p_list, &p_rec_item->list_item);
 106
 107 Exit:
 108         OSM_LOG_EXIT(sa->p_log);
 109         return (status);
 110 }
 111
 112 /**********************************************************************
 113  **********************************************************************/
 114 static void
 115 __osm_lftr_rcv_by_comp_mask(IN cl_map_item_t * const p_map_item,
 116                             IN void *context)
 117 {
 118         const osm_lftr_search_ctxt_t *const p_ctxt =
 119             (osm_lftr_search_ctxt_t *) context;
 120         const osm_switch_t *const p_sw = (osm_switch_t *) p_map_item;
 121         const ib_lft_record_t *const p_rcvd_rec = p_ctxt->p_rcvd_rec;
 122         osm_sa_t *sa = p_ctxt->sa;
 123         ib_net64_t const comp_mask = p_ctxt->comp_mask;
 124         const osm_physp_t *const p_req_physp = p_ctxt->p_req_physp;
 125         osm_port_t *p_port;
 126         uint16_t min_lid_ho, max_lid_ho;
 127         uint16_t min_block, max_block, block;
 128         const osm_physp_t *p_physp;
 129
 130         /* In switches, the port guid is the node guid. */
 131         p_port = osm_get_port_by_guid(sa->p_subn,
 132                                       p_sw->p_node->node_info.port_guid);
 133         if (!p_port) {
 134                 OSM_LOG(sa->p_log, OSM_LOG_ERROR, "ERR 4405: "
 135                         "Failed to find Port by Node Guid:0x%016" PRIx64
 136                         "\n", cl_ntoh64(p_sw->p_node->node_info.node_guid));
 137                 return;
 138         }
 139
 140         /* check that the requester physp and the current physp are under
 141            the same partition. */
 142         p_physp = p_port->p_physp;
 143         if (!p_physp) {
 144                 OSM_LOG(sa->p_log, OSM_LOG_ERROR, "ERR 4406: "
 145                         "Failed to find default physical Port by Node Guid:0x%016"
 146                         PRIx64 "\n",
 147                         cl_ntoh64(p_sw->p_node->node_info.node_guid));
 148                 return;
 149         }
 150         if (!osm_physp_share_pkey(sa->p_log, p_req_physp, p_physp))
 151                 return;
 152
 153         /* get the port 0 of the switch */
 154         osm_port_get_lid_range_ho(p_port, &min_lid_ho, &max_lid_ho);
 155
 156         /* compare the lids - if required */
 157         if (comp_mask & IB_LFTR_COMPMASK_LID) {
 158                 OSM_LOG(sa->p_log, OSM_LOG_DEBUG,
 159                         "Comparing lid:%u to port lid range: %u .. %u\n",
 160                         cl_ntoh16(p_rcvd_rec->lid), min_lid_ho, max_lid_ho);
 161                 /* ok we are ready for range check */
 162                 if (min_lid_ho > cl_ntoh16(p_rcvd_rec->lid) ||
 163                     max_lid_ho < cl_ntoh16(p_rcvd_rec->lid))
 164                         return;
 165         }
 166
 167         /* now we need to decide which blocks to output */
 168         max_block = osm_switch_get_max_block_id_in_use(p_sw);
 169         if (comp_mask & IB_LFTR_COMPMASK_BLOCK) {
 170                 min_block = cl_ntoh16(p_rcvd_rec->block_num);
 171                 if (min_block > max_block)
 172                         return;
 173                 max_block = min_block;
 174         } else                  /* use as many blocks as "in use" */
 175                 min_block = 0;
 176
 177         /* so we can add these blocks one by one ... */
 178         for (block = min_block; block <= max_block; block++)
 179                 __osm_lftr_rcv_new_lftr(sa, p_sw, p_ctxt->p_list,
 180                                         osm_port_get_base_lid(p_port), block);
 181 }
 182
 183 /**********************************************************************
 184  **********************************************************************/
 185 void osm_lftr_rcv_process(IN void *ctx, IN void *data)
 186 {
 187         osm_sa_t *sa = ctx;
 188         osm_madw_t *p_madw = data;
 189         const ib_sa_mad_t *p_rcvd_mad;
 190         const ib_lft_record_t *p_rcvd_rec;
 191         cl_qlist_t rec_list;
 192         osm_lftr_search_ctxt_t context;
 193         osm_physp_t *p_req_physp;
 194
 195         CL_ASSERT(sa);
 196
 197         OSM_LOG_ENTER(sa->p_log);
 198
 199         CL_ASSERT(p_madw);
 200
 201         p_rcvd_mad = osm_madw_get_sa_mad_ptr(p_madw);
 202         p_rcvd_rec = (ib_lft_record_t *) ib_sa_mad_get_payload_ptr(p_rcvd_mad);
 203
 204         CL_ASSERT(p_rcvd_mad->attr_id == IB_MAD_ATTR_LFT_RECORD);
 205
 206         /* we only support SubnAdmGet and SubnAdmGetTable methods */
 207         if (p_rcvd_mad->method != IB_MAD_METHOD_GET &&
 208             p_rcvd_mad->method != IB_MAD_METHOD_GETTABLE) {
 209                 OSM_LOG(sa->p_log, OSM_LOG_ERROR, "ERR 4408: "
 210                         "Unsupported Method (%s)\n",
 211                         ib_get_sa_method_str(p_rcvd_mad->method));
 212                 osm_sa_send_error(sa, p_madw, IB_MAD_STATUS_UNSUP_METHOD_ATTR);
 213                 goto Exit;
 214         }
 215
 216         /* update the requester physical port. */
 217         p_req_physp = osm_get_physp_by_mad_addr(sa->p_log, sa->p_subn,
 218                                                 osm_madw_get_mad_addr_ptr
 219                                                 (p_madw));
 220         if (p_req_physp == NULL) {
 221                 OSM_LOG(sa->p_log, OSM_LOG_ERROR, "ERR 4407: "
 222                         "Cannot find requester physical port\n");
 223                 goto Exit;
 224         }
 225
 226         cl_qlist_init(&rec_list);
 227
 228         context.p_rcvd_rec = p_rcvd_rec;
 229         context.p_list = &rec_list;
 230         context.comp_mask = p_rcvd_mad->comp_mask;
 231         context.sa = sa;
 232         context.p_req_physp = p_req_physp;
 233
 234         cl_plock_acquire(sa->p_lock);
 235
 236         /* Go over all switches */
 237         cl_qmap_apply_func(&sa->p_subn->sw_guid_tbl,
 238                            __osm_lftr_rcv_by_comp_mask, &context);
 239
 240         cl_plock_release(sa->p_lock);
 241
 242         osm_sa_respond(sa, p_madw, sizeof(ib_lft_record_t), &rec_list);
 243
 244 Exit:
 245         OSM_LOG_EXIT(sa->p_log);
 246 }