contrib/ofed/management/opensm/opensm/osm_ucast_file.c

   1 /*
   2  * Copyright (c) 2006,2007 Voltaire, Inc. All rights reserved.
   3  * Copyright (c) 2008      Mellanox Technologies LTD. All rights reserved.
   4  *
   5  * This software is available to you under a choice of one of two
   6  * licenses.  You may choose to be licensed under the terms of the GNU
   7  * General Public License (GPL) Version 2, available from the file
   8  * COPYING in the main directory of this source tree, or the
   9  * OpenIB.org BSD license below:
  10  *
  11  *     Redistribution and use in source and binary forms, with or
  12  *     without modification, are permitted provided that the following
  13  *     conditions are met:
  14  *
  15  *      - Redistributions of source code must retain the above
  16  *        copyright notice, this list of conditions and the following
  17  *        disclaimer.
  18  *
  19  *      - Redistributions in binary form must reproduce the above
  20  *        copyright notice, this list of conditions and the following
  21  *        disclaimer in the documentation and/or other materials
  22  *        provided with the distribution.
  23  *
  24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  31  * SOFTWARE.
  32  *
  33  */
  34
  35 /*
  36  * Abstract:
  37  *    Implementation of OpenSM unicast routing module which loads
  38  *    routes from the dump file
  39  */
  40
  41 #if HAVE_CONFIG_H
  42 #  include <config.h>
  43 #endif                          /* HAVE_CONFIG_H */
  44
  45 #include <stdlib.h>
  46 #include <string.h>
  47 #include <ctype.h>
  48
  49 #include <iba/ib_types.h>
  50 #include <complib/cl_qmap.h>
  51 #include <complib/cl_debug.h>
  52 #include <opensm/osm_opensm.h>
  53 #include <opensm/osm_switch.h>
  54 #include <opensm/osm_log.h>
  55
  56 static uint16_t remap_lid(osm_opensm_t * p_osm, uint16_t lid, ib_net64_t guid)
  57 {
  58         osm_port_t *p_port;
  59         uint16_t min_lid, max_lid;
  60         uint8_t lmc;
  61
  62         p_port = osm_get_port_by_guid(&p_osm->subn, guid);
  63         if (!p_port) {
  64                 OSM_LOG(&p_osm->log, OSM_LOG_VERBOSE,
  65                         "cannot find port guid 0x%016" PRIx64
  66                         " , will use the same lid\n", cl_ntoh64(guid));
  67                 return lid;
  68         }
  69
  70         osm_port_get_lid_range_ho(p_port, &min_lid, &max_lid);
  71         if (min_lid <= lid && lid <= max_lid)
  72                 return lid;
  73
  74         lmc = osm_port_get_lmc(p_port);
  75         return min_lid + (lid & ((1 << lmc) - 1));
  76 }
  77
  78 static void add_path(osm_opensm_t * p_osm,
  79                      osm_switch_t * p_sw, uint16_t lid, uint8_t port_num,
  80                      ib_net64_t port_guid)
  81 {
  82         uint16_t new_lid;
  83         uint8_t old_port;
  84
  85         new_lid = port_guid ? remap_lid(p_osm, lid, port_guid) : lid;
  86         old_port = osm_switch_get_port_by_lid(p_sw, new_lid);
  87         if (old_port != OSM_NO_PATH && old_port != port_num) {
  88                 OSM_LOG(&p_osm->log, OSM_LOG_VERBOSE,
  89                         "LID collision is detected on switch "
  90                         "0x016%" PRIx64 ", will overwrite LID %u entry\n",
  91                         cl_ntoh64(osm_node_get_node_guid(p_sw->p_node)),
  92                         new_lid);
  93         }
  94
  95         p_sw->new_lft[new_lid] = port_num;
  96         if (!(p_osm->subn.opt.port_profile_switch_nodes && port_guid &&
  97               osm_get_switch_by_guid(&p_osm->subn, port_guid)))
  98                 osm_switch_count_path(p_sw, port_num);
  99
 100         OSM_LOG(&p_osm->log, OSM_LOG_DEBUG,
 101                 "route 0x%04x(was 0x%04x) %u 0x%016" PRIx64
 102                 " is added to switch 0x%016" PRIx64 "\n",
 103                 new_lid, lid, port_num, cl_ntoh64(port_guid),
 104                 cl_ntoh64(osm_node_get_node_guid(p_sw->p_node)));
 105 }
 106
 107 static void add_lid_hops(osm_opensm_t * p_osm, osm_switch_t * p_sw,
 108                          uint16_t lid, ib_net64_t guid,
 109                          uint8_t hops[], unsigned len)
 110 {
 111         uint16_t new_lid;
 112         uint8_t i;
 113
 114         new_lid = guid ? remap_lid(p_osm, lid, guid) : lid;
 115         if (len > p_sw->num_ports)
 116                 len = p_sw->num_ports;
 117
 118         for (i = 0; i < len; i++)
 119                 osm_switch_set_hops(p_sw, lid, i, hops[i]);
 120 }
 121
 122 static int do_ucast_file_load(void *context)
 123 {
 124         char line[1024];
 125         char *file_name;
 126         FILE *file;
 127         ib_net64_t sw_guid, port_guid;
 128         osm_opensm_t *p_osm = context;
 129         osm_switch_t *p_sw;
 130         uint16_t lid;
 131         uint8_t port_num;
 132         unsigned lineno;
 133
 134         file_name = p_osm->subn.opt.lfts_file;
 135         if (!file_name) {
 136                 OSM_LOG(&p_osm->log, OSM_LOG_VERBOSE,
 137                         "LFTs file name is not given; "
 138                         "using default routing algorithm\n");
 139                 return 1;
 140         }
 141
 142         file = fopen(file_name, "r");
 143         if (!file) {
 144                 OSM_LOG(&p_osm->log, OSM_LOG_ERROR | OSM_LOG_SYS, "ERR 6302: "
 145                         "cannot open ucast dump file \'%s\': %m\n", file_name);
 146                 return -1;
 147         }
 148
 149         lineno = 0;
 150         p_sw = NULL;
 151
 152         while (fgets(line, sizeof(line) - 1, file) != NULL) {
 153                 char *p, *q;
 154                 lineno++;
 155
 156                 p = line;
 157                 while (isspace(*p))
 158                         p++;
 159
 160                 if (*p == '#')
 161                         continue;
 162
 163                 if (!strncmp(p, "Multicast mlids", 15)) {
 164                         OSM_LOG(&p_osm->log, OSM_LOG_ERROR | OSM_LOG_SYS,
 165                                 "ERR 6303: "
 166                                 "Multicast dump file detected; "
 167                                 "skipping parsing. Using default "
 168                                 "routing algorithm\n");
 169                 } else if (!strncmp(p, "Unicast lids", 12)) {
 170                         if (p_sw)
 171                                 osm_ucast_mgr_set_fwd_table(&p_osm->sm.
 172                                                             ucast_mgr, p_sw);
 173                         q = strstr(p, " guid 0x");
 174                         if (!q) {
 175                                 OSM_LOG(&p_osm->log, OSM_LOG_ERROR,
 176                                         "PARSE ERROR: %s:%u: "
 177                                         "cannot parse switch definition\n",
 178                                         file_name, lineno);
 179                                 return -1;
 180                         }
 181                         p = q + 8;
 182                         sw_guid = strtoull(p, &q, 16);
 183                         if (q == p || !isspace(*q)) {
 184                                 OSM_LOG(&p_osm->log, OSM_LOG_ERROR,
 185                                         "PARSE ERROR: %s:%u: "
 186                                         "cannot parse switch guid: \'%s\'\n",
 187                                         file_name, lineno, p);
 188                                 return -1;
 189                         }
 190                         sw_guid = cl_hton64(sw_guid);
 191
 192                         p_sw = osm_get_switch_by_guid(&p_osm->subn, sw_guid);
 193                         if (!p_sw) {
 194                                 OSM_LOG(&p_osm->log, OSM_LOG_VERBOSE,
 195                                         "cannot find switch %016" PRIx64 "\n",
 196                                         cl_ntoh64(sw_guid));
 197                                 continue;
 198                         }
 199                         memset(p_sw->new_lft, OSM_NO_PATH,
 200                                IB_LID_UCAST_END_HO + 1);
 201                 } else if (p_sw && !strncmp(p, "0x", 2)) {
 202                         p += 2;
 203                         lid = (uint16_t) strtoul(p, &q, 16);
 204                         if (q == p || !isspace(*q)) {
 205                                 OSM_LOG(&p_osm->log, OSM_LOG_ERROR,
 206                                         "PARSE ERROR: %s:%u: "
 207                                         "cannot parse lid: \'%s\'\n",
 208                                         file_name, lineno, p);
 209                                 return -1;
 210                         }
 211                         p = q;
 212                         while (isspace(*p))
 213                                 p++;
 214                         port_num = (uint8_t) strtoul(p, &q, 10);
 215                         if (q == p || !isspace(*q)) {
 216                                 OSM_LOG(&p_osm->log, OSM_LOG_ERROR,
 217                                         "PARSE ERROR: %s:%u: "
 218                                         "cannot parse port: \'%s\'\n",
 219                                         file_name, lineno, p);
 220                                 return -1;
 221                         }
 222                         p = q;
 223                         /* additionally try to exract guid */
 224                         q = strstr(p, " portguid 0x");
 225                         if (!q) {
 226                                 OSM_LOG(&p_osm->log, OSM_LOG_VERBOSE,
 227                                         "PARSE WARNING: %s:%u: "
 228                                         "cannot find port guid "
 229                                         "(maybe broken dump): \'%s\'\n",
 230                                         file_name, lineno, p);
 231                                 port_guid = 0;
 232                         } else {
 233                                 p = q + 12;
 234                                 port_guid = strtoull(p, &q, 16);
 235                                 if (q == p || (!isspace(*q) && *q != ':')) {
 236                                         OSM_LOG(&p_osm->log, OSM_LOG_VERBOSE,
 237                                                 "PARSE WARNING: %s:%u: "
 238                                                 "cannot parse port guid "
 239                                                 "(maybe broken dump): \'%s\'\n",
 240                                                 file_name, lineno, p);
 241                                         port_guid = 0;
 242                                 }
 243                         }
 244                         port_guid = cl_hton64(port_guid);
 245                         add_path(p_osm, p_sw, lid, port_num, port_guid);
 246                 }
 247         }
 248
 249         if (p_sw)
 250                 osm_ucast_mgr_set_fwd_table(&p_osm->sm.ucast_mgr, p_sw);
 251
 252         fclose(file);
 253         return 0;
 254 }
 255
 256 static int do_lid_matrix_file_load(void *context)
 257 {
 258         char line[1024];
 259         uint8_t hops[256];
 260         char *file_name;
 261         FILE *file;
 262         ib_net64_t guid;
 263         osm_opensm_t *p_osm = context;
 264         osm_switch_t *p_sw;
 265         unsigned lineno;
 266         uint16_t lid;
 267
 268         file_name = p_osm->subn.opt.lid_matrix_dump_file;
 269         if (!file_name) {
 270                 OSM_LOG(&p_osm->log, OSM_LOG_VERBOSE,
 271                         "lid matrix file name is not given; "
 272                         "using default lid matrix generation algorithm\n");
 273                 return 1;
 274         }
 275
 276         file = fopen(file_name, "r");
 277         if (!file) {
 278                 OSM_LOG(&p_osm->log, OSM_LOG_ERROR | OSM_LOG_SYS, "ERR 6305: "
 279                         "cannot open lid matrix file \'%s\': %m\n", file_name);
 280                 return -1;
 281         }
 282
 283         lineno = 0;
 284         p_sw = NULL;
 285
 286         while (fgets(line, sizeof(line) - 1, file) != NULL) {
 287                 char *p, *q;
 288                 lineno++;
 289
 290                 p = line;
 291                 while (isspace(*p))
 292                         p++;
 293
 294                 if (*p == '#')
 295                         continue;
 296
 297                 if (!strncmp(p, "Switch", 6)) {
 298                         q = strstr(p, " guid 0x");
 299                         if (!q) {
 300                                 OSM_LOG(&p_osm->log, OSM_LOG_ERROR,
 301                                         "PARSE ERROR: %s:%u: "
 302                                         "cannot parse switch definition\n",
 303                                         file_name, lineno);
 304                                 return -1;
 305                         }
 306                         p = q + 8;
 307                         guid = strtoull(p, &q, 16);
 308                         if (q == p || !isspace(*q)) {
 309                                 OSM_LOG(&p_osm->log, OSM_LOG_ERROR,
 310                                         "PARSE ERROR: %s:%u: "
 311                                         "cannot parse switch guid: \'%s\'\n",
 312                                         file_name, lineno, p);
 313                                 return -1;
 314                         }
 315                         guid = cl_hton64(guid);
 316
 317                         p_sw = osm_get_switch_by_guid(&p_osm->subn, guid);
 318                         if (!p_sw) {
 319                                 OSM_LOG(&p_osm->log, OSM_LOG_VERBOSE,
 320                                         "cannot find switch %016" PRIx64 "\n",
 321                                         cl_ntoh64(guid));
 322                                 continue;
 323                         }
 324                 } else if (p_sw && !strncmp(p, "0x", 2)) {
 325                         unsigned long num;
 326                         unsigned len = 0;
 327
 328                         memset(hops, 0xff, sizeof(hops));
 329
 330                         p += 2;
 331                         num = strtoul(p, &q, 16);
 332                         if (num > 0xffff || q == p ||
 333                             (*q != ':' && !isspace(*q))) {
 334                                 OSM_LOG(&p_osm->log, OSM_LOG_ERROR,
 335                                         "PARSE ERROR: %s:%u: "
 336                                         "cannot parse lid: \'%s\'\n",
 337                                         file_name, lineno, p);
 338                                 return -1;
 339                         }
 340                         /* Just checked the range, so casting is safe */
 341                         lid = (uint16_t) num;
 342                         p = q;
 343                         while (isspace(*p) || *p == ':')
 344                                 p++;
 345                         while (len < 256 && *p && *p != '#') {
 346                                 num = strtoul(p, &q, 16);
 347                                 if (num > 0xff || q == p) {
 348                                         OSM_LOG(&p_osm->log, OSM_LOG_ERROR,
 349                                                 "PARSE ERROR: %s:%u: "
 350                                                 "cannot parse hops number: \'%s\'\n",
 351                                                 file_name, lineno, p);
 352                                         return -1;
 353                                 }
 354                                 /* Just checked the range, so casting is safe */
 355                                 hops[len++] = (uint8_t) num;
 356                                 p = q;
 357                                 while (isspace(*p))
 358                                         p++;
 359                         }
 360                         /* additionally try to extract guid */
 361                         q = strstr(p, " portguid 0x");
 362                         if (!q) {
 363                                 OSM_LOG(&p_osm->log, OSM_LOG_VERBOSE,
 364                                         "PARSE WARNING: %s:%u: "
 365                                         "cannot find port guid "
 366                                         "(maybe broken dump): \'%s\'\n",
 367                                         file_name, lineno, p);
 368                                 guid = 0;
 369                         } else {
 370                                 p = q + 12;
 371                                 guid = strtoull(p, &q, 16);
 372                                 if (q == p || !isspace(*q)) {
 373                                         OSM_LOG(&p_osm->log, OSM_LOG_VERBOSE,
 374                                                 "PARSE WARNING: %s:%u: "
 375                                                 "cannot parse port guid "
 376                                                 "(maybe broken dump): \'%s\'\n",
 377                                                 file_name, lineno, p);
 378                                         guid = 0;
 379                                 }
 380                         }
 381                         guid = cl_hton64(guid);
 382                         add_lid_hops(p_osm, p_sw, lid, guid, hops, len);
 383                 }
 384         }
 385
 386         fclose(file);
 387         return 0;
 388 }
 389
 390 int osm_ucast_file_setup(struct osm_routing_engine *r, osm_opensm_t *osm)
 391 {
 392         r->context = osm;
 393         r->build_lid_matrices = do_lid_matrix_file_load;
 394         r->ucast_build_fwd_tables = do_ucast_file_load;
 395         return 0;
 396 }