lnet/utils/lnetconfig/liblnetconfig.c

   1 /*
   2  * LGPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU Lesser General Public License as
   8  * published by the Free Software Foundation; either version 2.1 of the
   9  * License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library. If not, see <http://www.gnu.org/licenses/>.
  18  *
  19  * LGPL HEADER END
  20  *
  21  * Copyright (c) 2014, 2015, Intel Corporation.
  22  *
  23  * Author:
  24  *   Amir Shehata <amir.shehata@intel.com>
  25  */
  26
  27 /*
  28  * There are two APIs:
  29  *  1. APIs that take the actual parameters expanded.  This is for other
  30  *  entities that would like to link against the library and call the APIs
  31  *  directly without having to form an intermediate representation.
  32  *  2. APIs that take a YAML file and parses out the information there and
  33  *  calls the APIs mentioned in 1
  34  */
  35
  36 #include <errno.h>
  37 #include <limits.h>
  38 #include <netdb.h>
  39 #include <stdio.h>
  40 #include <stdlib.h>
  41 #include <string.h>
  42 #include <sys/ioctl.h>
  43 #include <libcfs/util/ioctl.h>
  44 #include <lnet/lnetctl.h>
  45 #include <lnet/socklnd.h>
  46 #include "liblnd.h"
  47 #include "liblnetconfig.h"
  48 #include "cyaml.h"
  49
  50 #define CONFIG_CMD              "configure"
  51 #define UNCONFIG_CMD            "unconfigure"
  52 #define ADD_CMD                 "add"
  53 #define DEL_CMD                 "del"
  54 #define SHOW_CMD                "show"
  55
  56 int lustre_lnet_config_lib_init(void)
  57 {
  58         return register_ioc_dev(LNET_DEV_ID, LNET_DEV_PATH,
  59                                 LNET_DEV_MAJOR, LNET_DEV_MINOR);
  60 }
  61
  62 int lustre_lnet_config_ni_system(bool up, bool load_ni_from_mod,
  63                                  int seq_no, struct cYAML **err_rc)
  64 {
  65         struct libcfs_ioctl_data data;
  66         unsigned int opc;
  67         int rc;
  68         char err_str[LNET_MAX_STR_LEN];
  69
  70         snprintf(err_str, sizeof(err_str), "\"Success\"");
  71
  72         LIBCFS_IOC_INIT(data);
  73
  74         /* Reverse logic is used here in order not to change
  75          * the lctl utility */
  76         data.ioc_flags = load_ni_from_mod ? 0 : 1;
  77
  78         opc = up ? IOC_LIBCFS_CONFIGURE : IOC_LIBCFS_UNCONFIGURE;
  79
  80         rc = l_ioctl(LNET_DEV_ID, opc, &data);
  81         if (rc != 0) {
  82                 snprintf(err_str,
  83                         sizeof(err_str),
  84                         "\"LNet %s error: %s\"", (up) ? "configure" :
  85                         "unconfigure", strerror(errno));
  86                 rc = -errno;
  87         }
  88
  89         cYAML_build_error(rc, seq_no, (up) ? CONFIG_CMD : UNCONFIG_CMD,
  90                           "lnet", err_str, err_rc);
  91
  92         return rc;
  93 }
  94
  95 int lustre_lnet_config_route(char *nw, char *gw, int hops, int prio,
  96                              int seq_no, struct cYAML **err_rc)
  97 {
  98         struct lnet_ioctl_config_data data;
  99         lnet_nid_t gateway_nid;
 100         int rc = LUSTRE_CFG_RC_NO_ERR;
 101         __u32 net = LNET_NIDNET(LNET_NID_ANY);
 102         char err_str[LNET_MAX_STR_LEN];
 103
 104         snprintf(err_str, sizeof(err_str), "\"Success\"");
 105
 106         if (nw == NULL || gw == NULL) {
 107                 snprintf(err_str,
 108                          sizeof(err_str),
 109                          "\"missing mandatory parameter(s): '%s'\"",
 110                          (nw == NULL && gw == NULL) ? "network, gateway" :
 111                          (nw == NULL) ? "network" : "gateway");
 112                 rc = LUSTRE_CFG_RC_MISSING_PARAM;
 113                 goto out;
 114         }
 115
 116         net = libcfs_str2net(nw);
 117         if (net == LNET_NIDNET(LNET_NID_ANY)) {
 118                 snprintf(err_str,
 119                          sizeof(err_str),
 120                          "\"cannot parse net %s\"", nw);
 121                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 122                 goto out;
 123         }
 124
 125         if (LNET_NETTYP(net) == CIBLND    ||
 126             LNET_NETTYP(net) == OPENIBLND ||
 127             LNET_NETTYP(net) == IIBLND    ||
 128             LNET_NETTYP(net) == VIBLND) {
 129                 snprintf(err_str,
 130                          sizeof(err_str),
 131                          "\"obselete LNet type '%s'\"", libcfs_lnd2str(net));
 132                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 133                 goto out;
 134         }
 135
 136         gateway_nid = libcfs_str2nid(gw);
 137         if (gateway_nid == LNET_NID_ANY) {
 138                 snprintf(err_str,
 139                         sizeof(err_str),
 140                         "\"cannot parse gateway NID '%s'\"", gw);
 141                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 142                 goto out;
 143         }
 144
 145         if (hops == -1) {
 146                 /* hops is undefined */
 147                 hops = LNET_UNDEFINED_HOPS;
 148         } else if (hops < 1 || hops > 255) {
 149                 snprintf(err_str,
 150                         sizeof(err_str),
 151                         "\"invalid hop count %d, must be between 1 and 255\"",
 152                         hops);
 153                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
 154                 goto out;
 155         }
 156
 157         if (prio == -1) {
 158                 prio = 0;
 159         } else if (prio < 0) {
 160                 snprintf(err_str,
 161                          sizeof(err_str),
 162                         "\"invalid priority %d, must be greater than 0\"",
 163                         prio);
 164                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
 165                 goto out;
 166         }
 167
 168         LIBCFS_IOC_INIT_V2(data, cfg_hdr);
 169         data.cfg_net = net;
 170         data.cfg_config_u.cfg_route.rtr_hop = hops;
 171         data.cfg_config_u.cfg_route.rtr_priority = prio;
 172         data.cfg_nid = gateway_nid;
 173
 174         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_ADD_ROUTE, &data);
 175         if (rc != 0) {
 176                 rc = -errno;
 177                 snprintf(err_str,
 178                          sizeof(err_str),
 179                          "\"cannot add route: %s\"", strerror(errno));
 180                 goto out;
 181         }
 182
 183 out:
 184         cYAML_build_error(rc, seq_no, ADD_CMD, "route", err_str, err_rc);
 185
 186         return rc;
 187 }
 188
 189 int lustre_lnet_del_route(char *nw, char *gw,
 190                           int seq_no, struct cYAML **err_rc)
 191 {
 192         struct lnet_ioctl_config_data data;
 193         lnet_nid_t gateway_nid;
 194         int rc = LUSTRE_CFG_RC_NO_ERR;
 195         __u32 net = LNET_NIDNET(LNET_NID_ANY);
 196         char err_str[LNET_MAX_STR_LEN];
 197
 198         snprintf(err_str, sizeof(err_str), "\"Success\"");
 199
 200         if (nw == NULL || gw == NULL) {
 201                 snprintf(err_str,
 202                          sizeof(err_str),
 203                          "\"missing mandatory parameter(s): '%s'\"",
 204                          (nw == NULL && gw == NULL) ? "network, gateway" :
 205                          (nw == NULL) ? "network" : "gateway");
 206                 rc = LUSTRE_CFG_RC_MISSING_PARAM;
 207                 goto out;
 208         }
 209
 210         net = libcfs_str2net(nw);
 211         if (net == LNET_NIDNET(LNET_NID_ANY)) {
 212                 snprintf(err_str,
 213                          sizeof(err_str),
 214                          "\"cannot parse net '%s'\"", nw);
 215                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 216                 goto out;
 217         }
 218
 219         if (LNET_NETTYP(net) == CIBLND    ||
 220             LNET_NETTYP(net) == OPENIBLND ||
 221             LNET_NETTYP(net) == IIBLND    ||
 222             LNET_NETTYP(net) == VIBLND) {
 223                 snprintf(err_str,
 224                          sizeof(err_str),
 225                          "\"obselete LNet type '%s'\"", libcfs_lnd2str(net));
 226                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 227                 goto out;
 228         }
 229
 230         gateway_nid = libcfs_str2nid(gw);
 231         if (gateway_nid == LNET_NID_ANY) {
 232                 snprintf(err_str,
 233                          sizeof(err_str),
 234                          "\"cannot parse gateway NID '%s'\"", gw);
 235                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 236                 goto out;
 237         }
 238
 239         LIBCFS_IOC_INIT_V2(data, cfg_hdr);
 240         data.cfg_net = net;
 241         data.cfg_nid = gateway_nid;
 242
 243         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_DEL_ROUTE, &data);
 244         if (rc != 0) {
 245                 rc = -errno;
 246                 snprintf(err_str,
 247                          sizeof(err_str),
 248                          "\"cannot delete route: %s\"", strerror(errno));
 249                 goto out;
 250         }
 251
 252 out:
 253         cYAML_build_error(rc, seq_no, DEL_CMD, "route", err_str, err_rc);
 254
 255         return rc;
 256 }
 257
 258 int lustre_lnet_show_route(char *nw, char *gw, int hops, int prio, int detail,
 259                            int seq_no, struct cYAML **show_rc,
 260                            struct cYAML **err_rc)
 261 {
 262         struct lnet_ioctl_config_data data;
 263         lnet_nid_t gateway_nid;
 264         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
 265         int l_errno = 0;
 266         __u32 net = LNET_NIDNET(LNET_NID_ANY);
 267         int i;
 268         struct cYAML *root = NULL, *route = NULL, *item = NULL;
 269         struct cYAML *first_seq = NULL;
 270         char err_str[LNET_MAX_STR_LEN];
 271         bool exist = false;
 272
 273         snprintf(err_str, sizeof(err_str),
 274                  "\"out of memory\"");
 275
 276         if (nw != NULL) {
 277                 net = libcfs_str2net(nw);
 278                 if (net == LNET_NIDNET(LNET_NID_ANY)) {
 279                         snprintf(err_str,
 280                                  sizeof(err_str),
 281                                  "\"cannot parse net '%s'\"", nw);
 282                         rc = LUSTRE_CFG_RC_BAD_PARAM;
 283                         goto out;
 284                 }
 285
 286                 if (LNET_NETTYP(net) == CIBLND    ||
 287                     LNET_NETTYP(net) == OPENIBLND ||
 288                     LNET_NETTYP(net) == IIBLND    ||
 289                     LNET_NETTYP(net) == VIBLND) {
 290                         snprintf(err_str,
 291                                  sizeof(err_str),
 292                                  "\"obsolete LNet type '%s'\"",
 293                                  libcfs_lnd2str(net));
 294                         rc = LUSTRE_CFG_RC_BAD_PARAM;
 295                         goto out;
 296                 }
 297         } else {
 298                 /* show all routes without filtering on net */
 299                 net = LNET_NIDNET(LNET_NID_ANY);
 300         }
 301
 302         if (gw != NULL) {
 303                 gateway_nid = libcfs_str2nid(gw);
 304                 if (gateway_nid == LNET_NID_ANY) {
 305                         snprintf(err_str,
 306                                  sizeof(err_str),
 307                                  "\"cannot parse gateway NID '%s'\"", gw);
 308                         rc = LUSTRE_CFG_RC_BAD_PARAM;
 309                         goto out;
 310                 }
 311         } else
 312                 /* show all routes with out filtering on gateway */
 313                 gateway_nid = LNET_NID_ANY;
 314
 315         if ((hops < 1 && hops != -1) || hops > 255) {
 316                 snprintf(err_str,
 317                          sizeof(err_str),
 318                          "\"invalid hop count %d, must be between 0 and 256\"",
 319                          hops);
 320                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
 321                 goto out;
 322         }
 323
 324         /* create struct cYAML root object */
 325         root = cYAML_create_object(NULL, NULL);
 326         if (root == NULL)
 327                 goto out;
 328
 329         route = cYAML_create_seq(root, "route");
 330         if (route == NULL)
 331                 goto out;
 332
 333         for (i = 0;; i++) {
 334                 LIBCFS_IOC_INIT_V2(data, cfg_hdr);
 335                 data.cfg_count = i;
 336
 337                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_ROUTE, &data);
 338                 if (rc != 0) {
 339                         l_errno = errno;
 340                         break;
 341                 }
 342
 343                 /* filter on provided data */
 344                 if (net != LNET_NIDNET(LNET_NID_ANY) &&
 345                     net != data.cfg_net)
 346                         continue;
 347
 348                 if (gateway_nid != LNET_NID_ANY &&
 349                     gateway_nid != data.cfg_nid)
 350                         continue;
 351
 352                 if (hops != -1 &&
 353                     hops != data.cfg_config_u.cfg_route.rtr_hop)
 354                         continue;
 355
 356                 if (prio != -1 &&
 357                     prio != data.cfg_config_u.cfg_route.rtr_priority)
 358                         continue;
 359
 360                 /* default rc to -1 incase we hit the goto */
 361                 rc = -1;
 362                 exist = true;
 363
 364                 item = cYAML_create_seq_item(route);
 365                 if (item == NULL)
 366                         goto out;
 367
 368                 if (first_seq == NULL)
 369                         first_seq = item;
 370
 371                 if (cYAML_create_string(item, "net",
 372                                         libcfs_net2str(data.cfg_net)) == NULL)
 373                         goto out;
 374
 375                 if (cYAML_create_string(item, "gateway",
 376                                         libcfs_nid2str(data.cfg_nid)) == NULL)
 377                         goto out;
 378
 379                 if (detail) {
 380                         if (cYAML_create_number(item, "hop",
 381                                                 data.cfg_config_u.cfg_route.
 382                                                         rtr_hop) ==
 383                             NULL)
 384                                 goto out;
 385
 386                         if (cYAML_create_number(item, "priority",
 387                                                 data.cfg_config_u.
 388                                                 cfg_route.rtr_priority) == NULL)
 389                                 goto out;
 390
 391                         if (cYAML_create_string(item, "state",
 392                                                 data.cfg_config_u.cfg_route.
 393                                                         rtr_flags ?
 394                                                 "up" : "down") == NULL)
 395                                 goto out;
 396                 }
 397         }
 398
 399         /* print output iff show_rc is not provided */
 400         if (show_rc == NULL)
 401                 cYAML_print_tree(root);
 402
 403         if (l_errno != ENOENT) {
 404                 snprintf(err_str,
 405                          sizeof(err_str),
 406                          "\"cannot get routes: %s\"",
 407                          strerror(l_errno));
 408                 rc = -l_errno;
 409                 goto out;
 410         } else
 411                 rc = LUSTRE_CFG_RC_NO_ERR;
 412
 413         snprintf(err_str, sizeof(err_str), "\"success\"");
 414 out:
 415         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR || !exist) {
 416                 cYAML_free_tree(root);
 417         } else if (show_rc != NULL && *show_rc != NULL) {
 418                 struct cYAML *show_node;
 419                 /* find the route node, if one doesn't exist then
 420                  * insert one.  Otherwise add to the one there
 421                  */
 422                 show_node = cYAML_get_object_item(*show_rc, "route");
 423                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
 424                         cYAML_insert_child(show_node, first_seq);
 425                         free(route);
 426                         free(root);
 427                 } else if (show_node == NULL) {
 428                         cYAML_insert_sibling((*show_rc)->cy_child,
 429                                                 route);
 430                         free(root);
 431                 } else {
 432                         cYAML_free_tree(root);
 433                 }
 434         } else {
 435                 *show_rc = root;
 436         }
 437
 438         cYAML_build_error(rc, seq_no, SHOW_CMD, "route", err_str, err_rc);
 439
 440         return rc;
 441 }
 442
 443 int lustre_lnet_config_net(char *net, char *intf, char *ip2net,
 444                            int peer_to, int peer_cr, int peer_buf_cr,
 445                            int credits, char *smp, int seq_no,
 446                            struct lnet_ioctl_config_lnd_tunables *lnd_tunables,
 447                            struct cYAML **err_rc)
 448 {
 449         struct lnet_ioctl_config_lnd_tunables *lnd = NULL;
 450         struct lnet_ioctl_config_data *data;
 451         size_t ioctl_size = sizeof(*data);
 452         char buf[LNET_MAX_STR_LEN];
 453         int rc = LUSTRE_CFG_RC_NO_ERR;
 454         char err_str[LNET_MAX_STR_LEN];
 455
 456         snprintf(err_str, sizeof(err_str), "\"success\"");
 457
 458         /* No need to register lo */
 459         if (net != NULL && !strcmp(net, "lo"))
 460                 return 0;
 461
 462         if (ip2net == NULL && (intf == NULL || net == NULL)) {
 463                 snprintf(err_str,
 464                          sizeof(err_str),
 465                          "\"mandatory parameter '%s' not specified."
 466                          " Optionally specify ip2net parameter\"",
 467                          (intf == NULL && net == NULL) ? "net, if" :
 468                          (intf == NULL) ? "if" : "net");
 469                 rc = LUSTRE_CFG_RC_MISSING_PARAM;
 470                 goto out;
 471         }
 472
 473         if (peer_to != -1 && peer_to <= 0) {
 474                 snprintf(err_str,
 475                          sizeof(err_str),
 476                          "\"peer timeout %d, must be greater than 0\"",
 477                          peer_to);
 478                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
 479                 goto out;
 480         }
 481
 482         if (ip2net != NULL && strlen(ip2net) >= sizeof(buf)) {
 483                 snprintf(err_str,
 484                          sizeof(err_str),
 485                          "\"ip2net string too long %d\"",
 486                                 (int)strlen(ip2net));
 487                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
 488                 goto out;
 489         }
 490
 491         if (lnd_tunables != NULL)
 492                 ioctl_size += sizeof(*lnd_tunables);
 493
 494         data = calloc(1, ioctl_size);
 495         if (data == NULL)
 496                 goto out;
 497
 498         if (ip2net == NULL)
 499                 snprintf(buf, sizeof(buf) - 1, "%s(%s)%s",
 500                         net, intf,
 501                         (smp) ? smp : "");
 502
 503         LIBCFS_IOC_INIT_V2(*data, cfg_hdr);
 504         strncpy(data->cfg_config_u.cfg_net.net_intf,
 505                 (ip2net != NULL) ? ip2net : buf, sizeof(buf));
 506         data->cfg_config_u.cfg_net.net_peer_timeout = peer_to;
 507         data->cfg_config_u.cfg_net.net_peer_tx_credits = peer_cr;
 508         data->cfg_config_u.cfg_net.net_peer_rtr_credits = peer_buf_cr;
 509         data->cfg_config_u.cfg_net.net_max_tx_credits = credits;
 510         /* Add in tunable settings if available */
 511         if (lnd_tunables != NULL) {
 512                 lnd = (struct lnet_ioctl_config_lnd_tunables *)data->cfg_bulk;
 513
 514                 data->cfg_hdr.ioc_len = ioctl_size;
 515                 memcpy(lnd, lnd_tunables, sizeof(*lnd_tunables));
 516         }
 517
 518         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_ADD_NET, data);
 519         if (rc < 0) {
 520                 rc = -errno;
 521                 snprintf(err_str,
 522                          sizeof(err_str),
 523                          "\"cannot add network: %s\"", strerror(errno));
 524         }
 525         free(data);
 526
 527 out:
 528         cYAML_build_error(rc, seq_no, ADD_CMD, "net", err_str, err_rc);
 529
 530         return rc;
 531 }
 532
 533 int lustre_lnet_del_net(char *nw, int seq_no, struct cYAML **err_rc)
 534 {
 535         struct lnet_ioctl_config_data data;
 536         __u32 net = LNET_NIDNET(LNET_NID_ANY);
 537         int rc = LUSTRE_CFG_RC_NO_ERR;
 538         char err_str[LNET_MAX_STR_LEN];
 539
 540         snprintf(err_str, sizeof(err_str), "\"success\"");
 541
 542         if (nw == NULL) {
 543                 snprintf(err_str,
 544                          sizeof(err_str),
 545                          "\"missing mandatory parameter\"");
 546                 rc = LUSTRE_CFG_RC_MISSING_PARAM;
 547                 goto out;
 548         }
 549
 550         net = libcfs_str2net(nw);
 551         if (net == LNET_NIDNET(LNET_NID_ANY)) {
 552                 snprintf(err_str,
 553                          sizeof(err_str),
 554                          "\"cannot parse net '%s'\"", nw);
 555                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 556                 goto out;
 557         }
 558
 559         LIBCFS_IOC_INIT_V2(data, cfg_hdr);
 560         data.cfg_net = net;
 561
 562         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_DEL_NET, &data);
 563         if (rc != 0) {
 564                 rc = -errno;
 565                 snprintf(err_str,
 566                          sizeof(err_str),
 567                          "\"cannot delete network: %s\"", strerror(errno));
 568                 goto out;
 569         }
 570
 571 out:
 572         cYAML_build_error(rc, seq_no, DEL_CMD, "net", err_str, err_rc);
 573
 574         return rc;
 575 }
 576
 577 int lustre_lnet_show_net(char *nw, int detail, int seq_no,
 578                          struct cYAML **show_rc, struct cYAML **err_rc)
 579 {
 580         char *buf;
 581         struct lnet_ioctl_config_lnd_tunables *lnd_cfg;
 582         struct lnet_ioctl_config_data *data;
 583         struct lnet_ioctl_net_config *net_config;
 584         __u32 net = LNET_NIDNET(LNET_NID_ANY);
 585         int rc = LUSTRE_CFG_RC_OUT_OF_MEM, i, j;
 586         int l_errno = 0;
 587         struct cYAML *root = NULL, *tunables = NULL, *net_node = NULL,
 588                 *interfaces = NULL, *item = NULL, *first_seq = NULL;
 589         int str_buf_len = LNET_MAX_SHOW_NUM_CPT * 2;
 590         char str_buf[str_buf_len];
 591         char *pos;
 592         char err_str[LNET_MAX_STR_LEN];
 593         bool exist = false;
 594         size_t buf_len;
 595
 596         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
 597
 598         buf_len = sizeof(*data) + sizeof(*net_config) + sizeof(*lnd_cfg);
 599         buf = calloc(1, buf_len);
 600         if (buf == NULL)
 601                 goto out;
 602
 603         data = (struct lnet_ioctl_config_data *)buf;
 604
 605         if (nw != NULL) {
 606                 net = libcfs_str2net(nw);
 607                 if (net == LNET_NIDNET(LNET_NID_ANY)) {
 608                         snprintf(err_str,
 609                                  sizeof(err_str),
 610                                  "\"cannot parse net '%s'\"", nw);
 611                         rc = LUSTRE_CFG_RC_BAD_PARAM;
 612                         goto out;
 613                 }
 614         }
 615
 616         root = cYAML_create_object(NULL, NULL);
 617         if (root == NULL)
 618                 goto out;
 619
 620         net_node = cYAML_create_seq(root, "net");
 621         if (net_node == NULL)
 622                 goto out;
 623
 624         for (i = 0;; i++) {
 625                 pos = str_buf;
 626
 627                 memset(buf, 0, buf_len);
 628
 629                 LIBCFS_IOC_INIT_V2(*data, cfg_hdr);
 630                 /*
 631                  * set the ioc_len to the proper value since INIT assumes
 632                  * size of data
 633                  */
 634                 data->cfg_hdr.ioc_len = buf_len;
 635                 data->cfg_count = i;
 636
 637                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_NET, data);
 638                 if (rc != 0) {
 639                         l_errno = errno;
 640                         break;
 641                 }
 642
 643                 /* filter on provided data */
 644                 if (net != LNET_NIDNET(LNET_NID_ANY) &&
 645                     net != LNET_NIDNET(data->cfg_nid))
 646                         continue;
 647
 648                 /* default rc to -1 in case we hit the goto */
 649                 rc = -1;
 650                 exist = true;
 651
 652                 net_config = (struct lnet_ioctl_net_config *)data->cfg_bulk;
 653
 654                 /* create the tree to be printed. */
 655                 item = cYAML_create_seq_item(net_node);
 656                 if (item == NULL)
 657                         goto out;
 658
 659                 if (first_seq == NULL)
 660                         first_seq = item;
 661
 662                 if (cYAML_create_string(item, "net",
 663                                         libcfs_net2str(
 664                                                 LNET_NIDNET(data->cfg_nid)))
 665                     == NULL)
 666                         goto out;
 667
 668                 if (cYAML_create_string(item, "nid",
 669                                         libcfs_nid2str(data->cfg_nid)) == NULL)
 670                         goto out;
 671
 672                 if (cYAML_create_string(item, "status",
 673                                         (net_config->ni_status ==
 674                                           LNET_NI_STATUS_UP) ?
 675                                             "up" : "down") == NULL)
 676                         goto out;
 677
 678                 /* don't add interfaces unless there is at least one
 679                  * interface */
 680                 if (strlen(net_config->ni_interfaces[0]) > 0) {
 681                         interfaces = cYAML_create_object(item, "interfaces");
 682                         if (interfaces == NULL)
 683                                 goto out;
 684
 685                         for (j = 0; j < LNET_MAX_INTERFACES; j++) {
 686                                 if (lustre_interface_show_net(interfaces, j,
 687                                                               detail, data,
 688                                                               net_config) < 0)
 689                                         goto out;
 690                         }
 691                 }
 692
 693                 if (detail) {
 694                         char *limit;
 695
 696                         tunables = cYAML_create_object(item, "tunables");
 697                         if (tunables == NULL)
 698                                 goto out;
 699
 700                         if (cYAML_create_number(tunables, "peer_timeout",
 701                                                 data->cfg_config_u.cfg_net.
 702                                                 net_peer_timeout) == NULL)
 703                                 goto out;
 704
 705                         if (cYAML_create_number(tunables, "peer_credits",
 706                                                 data->cfg_config_u.cfg_net.
 707                                                 net_peer_tx_credits) == NULL)
 708                                 goto out;
 709
 710                         if (cYAML_create_number(tunables,
 711                                                 "peer_buffer_credits",
 712                                                 data->cfg_config_u.cfg_net.
 713                                                 net_peer_rtr_credits) == NULL)
 714                                 goto out;
 715
 716                         if (cYAML_create_number(tunables, "credits",
 717                                                 data->cfg_config_u.cfg_net.
 718                                                 net_max_tx_credits) == NULL)
 719                                 goto out;
 720
 721                         /* out put the CPTs in the format: "[x,x,x,...]" */
 722                         limit = str_buf + str_buf_len - 3;
 723                         pos += snprintf(pos, limit - pos, "\"[");
 724                         for (j = 0 ; data->cfg_ncpts > 1 &&
 725                                 j < data->cfg_ncpts &&
 726                                 pos < limit; j++) {
 727                                 pos += snprintf(pos, limit - pos,
 728                                                 "%d", net_config->ni_cpts[j]);
 729                                 if ((j + 1) < data->cfg_ncpts)
 730                                         pos += snprintf(pos, limit - pos, ",");
 731                         }
 732                         pos += snprintf(pos, 3, "]\"");
 733
 734                         if (data->cfg_ncpts > 1 &&
 735                             cYAML_create_string(tunables, "CPT",
 736                                                 str_buf) == NULL)
 737                                 goto out;
 738                 }
 739         }
 740
 741         /* Print out the net information only if show_rc is not provided */
 742         if (show_rc == NULL)
 743                 cYAML_print_tree(root);
 744
 745         if (l_errno != ENOENT) {
 746                 snprintf(err_str,
 747                          sizeof(err_str),
 748                          "\"cannot get networks: %s\"",
 749                          strerror(l_errno));
 750                 rc = -l_errno;
 751                 goto out;
 752         } else
 753                 rc = LUSTRE_CFG_RC_NO_ERR;
 754
 755         snprintf(err_str, sizeof(err_str), "\"success\"");
 756 out:
 757         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR || !exist) {
 758                 cYAML_free_tree(root);
 759         } else if (show_rc != NULL && *show_rc != NULL) {
 760                 struct cYAML *show_node;
 761                 /* find the net node, if one doesn't exist
 762                  * then insert one.  Otherwise add to the one there
 763                  */
 764                 show_node = cYAML_get_object_item(*show_rc, "net");
 765                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
 766                         cYAML_insert_child(show_node, first_seq);
 767                         free(net_node);
 768                         free(root);
 769                 } else if (show_node == NULL) {
 770                         cYAML_insert_sibling((*show_rc)->cy_child,
 771                                                 net_node);
 772                         free(root);
 773                 } else {
 774                         cYAML_free_tree(root);
 775                 }
 776         } else {
 777                 *show_rc = root;
 778         }
 779
 780         cYAML_build_error(rc, seq_no, SHOW_CMD, "net", err_str, err_rc);
 781
 782         return rc;
 783 }
 784
 785 int lustre_lnet_enable_routing(int enable, int seq_no, struct cYAML **err_rc)
 786 {
 787         struct lnet_ioctl_config_data data;
 788         int rc = LUSTRE_CFG_RC_NO_ERR;
 789         char err_str[LNET_MAX_STR_LEN];
 790
 791         snprintf(err_str, sizeof(err_str), "\"success\"");
 792
 793         LIBCFS_IOC_INIT_V2(data, cfg_hdr);
 794         data.cfg_config_u.cfg_buffers.buf_enable = (enable) ? 1 : 0;
 795
 796         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_CONFIG_RTR, &data);
 797         if (rc != 0) {
 798                 rc = -errno;
 799                 snprintf(err_str,
 800                          sizeof(err_str),
 801                          "\"cannot %s routing %s\"",
 802                          (enable) ? "enable" : "disable", strerror(errno));
 803                 goto out;
 804         }
 805
 806 out:
 807         cYAML_build_error(rc, seq_no,
 808                          (enable) ? ADD_CMD : DEL_CMD,
 809                          "routing", err_str, err_rc);
 810
 811         return rc;
 812 }
 813
 814 int lustre_lnet_config_buffers(int tiny, int small, int large, int seq_no,
 815                                struct cYAML **err_rc)
 816 {
 817         struct lnet_ioctl_config_data data;
 818         int rc = LUSTRE_CFG_RC_NO_ERR;
 819         char err_str[LNET_MAX_STR_LEN];
 820
 821         snprintf(err_str, sizeof(err_str), "\"success\"");
 822
 823         /* -1 indicates to ignore changes to this field */
 824         if (tiny < -1 || small < -1 || large < -1) {
 825                 snprintf(err_str,
 826                          sizeof(err_str),
 827                          "\"tiny, small and large must be >= 0\"");
 828                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
 829                 goto out;
 830         }
 831
 832         LIBCFS_IOC_INIT_V2(data, cfg_hdr);
 833         data.cfg_config_u.cfg_buffers.buf_tiny = tiny;
 834         data.cfg_config_u.cfg_buffers.buf_small = small;
 835         data.cfg_config_u.cfg_buffers.buf_large = large;
 836
 837         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_ADD_BUF, &data);
 838         if (rc != 0) {
 839                 rc = -errno;
 840                 snprintf(err_str,
 841                          sizeof(err_str),
 842                          "\"cannot configure buffers: %s\"", strerror(errno));
 843                 goto out;
 844         }
 845
 846 out:
 847         cYAML_build_error(rc, seq_no, ADD_CMD, "buf", err_str, err_rc);
 848
 849         return rc;
 850 }
 851
 852 int lustre_lnet_show_routing(int seq_no, struct cYAML **show_rc,
 853                              struct cYAML **err_rc)
 854 {
 855         struct lnet_ioctl_config_data *data;
 856         struct lnet_ioctl_pool_cfg *pool_cfg = NULL;
 857         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
 858         int l_errno = 0;
 859         char *buf;
 860         char *pools[LNET_NRBPOOLS] = {"tiny", "small", "large"};
 861         int buf_count[LNET_NRBPOOLS] = {0};
 862         struct cYAML *root = NULL, *pools_node = NULL,
 863                      *type_node = NULL, *item = NULL, *cpt = NULL,
 864                      *first_seq = NULL, *buffers = NULL;
 865         int i, j;
 866         char err_str[LNET_MAX_STR_LEN];
 867         char node_name[LNET_MAX_STR_LEN];
 868         bool exist = false;
 869
 870         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
 871
 872         buf = calloc(1, sizeof(*data) + sizeof(*pool_cfg));
 873         if (buf == NULL)
 874                 goto out;
 875
 876         data = (struct lnet_ioctl_config_data *)buf;
 877
 878         root = cYAML_create_object(NULL, NULL);
 879         if (root == NULL)
 880                 goto out;
 881
 882         pools_node = cYAML_create_seq(root, "routing");
 883         if (pools_node == NULL)
 884                 goto out;
 885
 886         for (i = 0;; i++) {
 887                 LIBCFS_IOC_INIT_V2(*data, cfg_hdr);
 888                 data->cfg_hdr.ioc_len = sizeof(struct lnet_ioctl_config_data) +
 889                                         sizeof(struct lnet_ioctl_pool_cfg);
 890                 data->cfg_count = i;
 891
 892                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_BUF, data);
 893                 if (rc != 0) {
 894                         l_errno = errno;
 895                         break;
 896                 }
 897
 898                 exist = true;
 899
 900                 pool_cfg = (struct lnet_ioctl_pool_cfg *)data->cfg_bulk;
 901
 902                 snprintf(node_name, sizeof(node_name), "cpt[%d]", i);
 903                 item = cYAML_create_seq_item(pools_node);
 904                 if (item == NULL)
 905                         goto out;
 906
 907                 if (first_seq == NULL)
 908                         first_seq = item;
 909
 910                 cpt = cYAML_create_object(item, node_name);
 911                 if (cpt == NULL)
 912                         goto out;
 913
 914                 /* create the tree  and print */
 915                 for (j = 0; j < LNET_NRBPOOLS; j++) {
 916                         type_node = cYAML_create_object(cpt, pools[j]);
 917                         if (type_node == NULL)
 918                                 goto out;
 919                         if (cYAML_create_number(type_node, "npages",
 920                                                 pool_cfg->pl_pools[j].pl_npages)
 921                             == NULL)
 922                                 goto out;
 923                         if (cYAML_create_number(type_node, "nbuffers",
 924                                                 pool_cfg->pl_pools[j].
 925                                                   pl_nbuffers) == NULL)
 926                                 goto out;
 927                         if (cYAML_create_number(type_node, "credits",
 928                                                 pool_cfg->pl_pools[j].
 929                                                    pl_credits) == NULL)
 930                                 goto out;
 931                         if (cYAML_create_number(type_node, "mincredits",
 932                                                 pool_cfg->pl_pools[j].
 933                                                    pl_mincredits) == NULL)
 934                                 goto out;
 935                         /* keep track of the total count for each of the
 936                          * tiny, small and large buffers */
 937                         buf_count[j] += pool_cfg->pl_pools[j].pl_nbuffers;
 938                 }
 939         }
 940
 941         if (pool_cfg != NULL) {
 942                 item = cYAML_create_seq_item(pools_node);
 943                 if (item == NULL)
 944                         goto out;
 945
 946                 if (cYAML_create_number(item, "enable", pool_cfg->pl_routing) ==
 947                     NULL)
 948                         goto out;
 949         }
 950
 951         /* create a buffers entry in the show. This is necessary so that
 952          * if the YAML output is used to configure a node, the buffer
 953          * configuration takes hold */
 954         buffers = cYAML_create_object(root, "buffers");
 955         if (buffers == NULL)
 956                 goto out;
 957
 958         for (i = 0; i < LNET_NRBPOOLS; i++) {
 959                 if (cYAML_create_number(buffers, pools[i], buf_count[i]) == NULL)
 960                         goto out;
 961         }
 962
 963         if (show_rc == NULL)
 964                 cYAML_print_tree(root);
 965
 966         if (l_errno != ENOENT) {
 967                 snprintf(err_str,
 968                          sizeof(err_str),
 969                          "\"cannot get routing information: %s\"",
 970                          strerror(l_errno));
 971                 rc = -l_errno;
 972                 goto out;
 973         } else
 974                 rc = LUSTRE_CFG_RC_NO_ERR;
 975
 976         snprintf(err_str, sizeof(err_str), "\"success\"");
 977         rc = LUSTRE_CFG_RC_NO_ERR;
 978
 979 out:
 980         free(buf);
 981         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR || !exist) {
 982                 cYAML_free_tree(root);
 983         } else if (show_rc != NULL && *show_rc != NULL) {
 984                 struct cYAML *routing_node;
 985                 /* there should exist only one routing block and one
 986                  * buffers block. If there already exists a previous one
 987                  * then don't add another */
 988                 routing_node = cYAML_get_object_item(*show_rc, "routing");
 989                 if (routing_node == NULL) {
 990                         cYAML_insert_sibling((*show_rc)->cy_child,
 991                                                 root->cy_child);
 992                         free(root);
 993                 } else {
 994                         cYAML_free_tree(root);
 995                 }
 996         } else {
 997                 *show_rc = root;
 998         }
 999
1000         cYAML_build_error(rc, seq_no, SHOW_CMD, "routing", err_str, err_rc);
1001
1002         return rc;
1003 }
1004
1005 int lustre_lnet_show_peer_credits(int seq_no, struct cYAML **show_rc,
1006                                   struct cYAML **err_rc)
1007 {
1008         struct lnet_ioctl_peer peer_info;
1009         int rc = LUSTRE_CFG_RC_OUT_OF_MEM, ncpt = 0, i = 0, j = 0;
1010         int l_errno = 0;
1011         struct cYAML *root = NULL, *peer = NULL, *first_seq = NULL,
1012                      *peer_root = NULL;
1013         char err_str[LNET_MAX_STR_LEN];
1014         bool ncpt_set = false;
1015
1016         snprintf(err_str, sizeof(err_str),
1017                  "\"out of memory\"");
1018
1019         /* create struct cYAML root object */
1020         root = cYAML_create_object(NULL, NULL);
1021         if (root == NULL)
1022                 goto out;
1023
1024         peer_root = cYAML_create_seq(root, "peer");
1025         if (peer_root == NULL)
1026                 goto out;
1027
1028         do {
1029                 for (i = 0;; i++) {
1030                         LIBCFS_IOC_INIT_V2(peer_info, pr_hdr);
1031                         peer_info.pr_count = i;
1032                         peer_info.pr_lnd_u.pr_peer_credits.cr_ncpt = j;
1033                         rc = l_ioctl(LNET_DEV_ID,
1034                                      IOC_LIBCFS_GET_PEER_INFO, &peer_info);
1035                         if (rc != 0) {
1036                                 l_errno = errno;
1037                                 break;
1038                         }
1039
1040                         if (ncpt_set != 0) {
1041                                 ncpt = peer_info.pr_lnd_u.pr_peer_credits.
1042                                         cr_ncpt;
1043                                 ncpt_set = true;
1044                         }
1045
1046                         peer = cYAML_create_seq_item(peer_root);
1047                         if (peer == NULL)
1048                                 goto out;
1049
1050                         if (first_seq == NULL)
1051                                 first_seq = peer;
1052
1053                         if (cYAML_create_string(peer, "nid",
1054                                                 libcfs_nid2str
1055                                                  (peer_info.pr_nid)) == NULL)
1056                                 goto out;
1057
1058                         if (cYAML_create_string(peer, "state",
1059                                                 peer_info.pr_lnd_u.
1060                                                   pr_peer_credits.
1061                                                         cr_aliveness) ==
1062                             NULL)
1063                                 goto out;
1064
1065                         if (cYAML_create_number(peer, "refcount",
1066                                                 peer_info.pr_lnd_u.
1067                                                   pr_peer_credits.
1068                                                         cr_refcount) == NULL)
1069                                 goto out;
1070
1071                         if (cYAML_create_number(peer, "max_ni_tx_credits",
1072                                                 peer_info.pr_lnd_u.
1073                                                   pr_peer_credits.
1074                                                     cr_ni_peer_tx_credits)
1075                             == NULL)
1076                                 goto out;
1077
1078                         if (cYAML_create_number(peer, "available_tx_credits",
1079                                                 peer_info.pr_lnd_u.
1080                                                   pr_peer_credits.
1081                                                     cr_peer_tx_credits)
1082                             == NULL)
1083                                 goto out;
1084
1085                         if (cYAML_create_number(peer, "available_rtr_credits",
1086                                                 peer_info.pr_lnd_u.
1087                                                   pr_peer_credits.
1088                                                     cr_peer_rtr_credits)
1089                             == NULL)
1090                                 goto out;
1091
1092                         if (cYAML_create_number(peer, "min_rtr_credits",
1093                                                 peer_info.pr_lnd_u.
1094                                                   pr_peer_credits.
1095                                                     cr_peer_min_rtr_credits)
1096                             == NULL)
1097                                 goto out;
1098
1099                         if (cYAML_create_number(peer, "tx_q_num_of_buf",
1100                                                 peer_info.pr_lnd_u.
1101                                                   pr_peer_credits.
1102                                                     cr_peer_tx_qnob)
1103                             == NULL)
1104                                 goto out;
1105                 }
1106
1107                 if (l_errno != ENOENT) {
1108                         snprintf(err_str,
1109                                 sizeof(err_str),
1110                                 "\"cannot get peer information: %s\"",
1111                                 strerror(l_errno));
1112                         rc = -l_errno;
1113                         goto out;
1114                 }
1115
1116                 j++;
1117         } while (j < ncpt);
1118
1119         /* print output iff show_rc is not provided */
1120         if (show_rc == NULL)
1121                 cYAML_print_tree(root);
1122
1123         snprintf(err_str, sizeof(err_str), "\"success\"");
1124         rc = LUSTRE_CFG_RC_NO_ERR;
1125
1126 out:
1127         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR) {
1128                 cYAML_free_tree(root);
1129         } else if (show_rc != NULL && *show_rc != NULL) {
1130                 struct cYAML *show_node;
1131                 /* find the peer node, if one doesn't exist then
1132                  * insert one.  Otherwise add to the one there
1133                  */
1134                 show_node = cYAML_get_object_item(*show_rc,
1135                                                   "peer_credits");
1136                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
1137                         cYAML_insert_child(show_node, first_seq);
1138                         free(peer_root);
1139                         free(root);
1140                 } else if (show_node == NULL) {
1141                         cYAML_insert_sibling((*show_rc)->cy_child,
1142                                              peer_root);
1143                         free(root);
1144                 } else {
1145                         cYAML_free_tree(root);
1146                 }
1147         } else {
1148                 *show_rc = root;
1149         }
1150
1151         cYAML_build_error(rc, seq_no, SHOW_CMD, "peer_credits", err_str,
1152                           err_rc);
1153
1154         return rc;
1155 }
1156
1157 int lustre_lnet_show_stats(int seq_no, struct cYAML **show_rc,
1158                            struct cYAML **err_rc)
1159 {
1160         struct lnet_ioctl_lnet_stats data;
1161         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
1162         int l_errno;
1163         char err_str[LNET_MAX_STR_LEN];
1164         struct cYAML *root = NULL, *stats = NULL;
1165
1166         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
1167
1168         LIBCFS_IOC_INIT_V2(data, st_hdr);
1169
1170         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_LNET_STATS, &data);
1171         if (rc != 0) {
1172                 l_errno = errno;
1173                 snprintf(err_str,
1174                          sizeof(err_str),
1175                          "\"cannot get lnet statistics: %s\"",
1176                          strerror(l_errno));
1177                 rc = -l_errno;
1178                 goto out;
1179         }
1180
1181         root = cYAML_create_object(NULL, NULL);
1182         if (root == NULL)
1183                 goto out;
1184
1185         stats = cYAML_create_object(root, "statistics");
1186         if (stats == NULL)
1187                 goto out;
1188
1189         if (cYAML_create_number(stats, "msgs_alloc",
1190                                 data.st_cntrs.msgs_alloc) == NULL)
1191                 goto out;
1192
1193         if (cYAML_create_number(stats, "msgs_max",
1194                                 data.st_cntrs.msgs_max) == NULL)
1195                 goto out;
1196
1197         if (cYAML_create_number(stats, "errors",
1198                                 data.st_cntrs.errors) == NULL)
1199                 goto out;
1200
1201         if (cYAML_create_number(stats, "send_count",
1202                                 data.st_cntrs.send_count) == NULL)
1203                 goto out;
1204
1205         if (cYAML_create_number(stats, "recv_count",
1206                                 data.st_cntrs.recv_count) == NULL)
1207                 goto out;
1208
1209         if (cYAML_create_number(stats, "route_count",
1210                                 data.st_cntrs.route_count) == NULL)
1211                 goto out;
1212
1213         if (cYAML_create_number(stats, "drop_count",
1214                                 data.st_cntrs.drop_count) == NULL)
1215                 goto out;
1216
1217         if (cYAML_create_number(stats, "send_length",
1218                                 data.st_cntrs.send_length) == NULL)
1219                 goto out;
1220
1221         if (cYAML_create_number(stats, "recv_length",
1222                                 data.st_cntrs.recv_length) == NULL)
1223                 goto out;
1224
1225         if (cYAML_create_number(stats, "route_length",
1226                                 data.st_cntrs.route_length) == NULL)
1227                 goto out;
1228
1229         if (cYAML_create_number(stats, "drop_length",
1230                                 data.st_cntrs.drop_length) == NULL)
1231                 goto out;
1232
1233         if (show_rc == NULL)
1234                 cYAML_print_tree(root);
1235
1236         snprintf(err_str, sizeof(err_str), "\"success\"");
1237 out:
1238         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR) {
1239                 cYAML_free_tree(root);
1240         } else if (show_rc != NULL && *show_rc != NULL) {
1241                 cYAML_insert_sibling((*show_rc)->cy_child,
1242                                         root->cy_child);
1243                 free(root);
1244         } else {
1245                 *show_rc = root;
1246         }
1247
1248         cYAML_build_error(rc, seq_no, SHOW_CMD, "statistics", err_str, err_rc);
1249
1250         return rc;
1251 }
1252
1253 typedef int (*cmd_handler_t)(struct cYAML *tree,
1254                              struct cYAML **show_rc,
1255                              struct cYAML **err_rc);
1256
1257 static int handle_yaml_config_route(struct cYAML *tree, struct cYAML **show_rc,
1258                                     struct cYAML **err_rc)
1259 {
1260         struct cYAML *net, *gw, *hop, *prio, *seq_no;
1261
1262         net = cYAML_get_object_item(tree, "net");
1263         gw = cYAML_get_object_item(tree, "gateway");
1264         hop = cYAML_get_object_item(tree, "hop");
1265         prio = cYAML_get_object_item(tree, "priority");
1266         seq_no = cYAML_get_object_item(tree, "seq_no");
1267
1268         return lustre_lnet_config_route((net) ? net->cy_valuestring : NULL,
1269                                         (gw) ? gw->cy_valuestring : NULL,
1270                                         (hop) ? hop->cy_valueint : -1,
1271                                         (prio) ? prio->cy_valueint : -1,
1272                                         (seq_no) ? seq_no->cy_valueint : -1,
1273                                         err_rc);
1274 }
1275
1276 static int handle_yaml_config_net(struct cYAML *tree, struct cYAML **show_rc,
1277                                   struct cYAML **err_rc)
1278 {
1279         struct cYAML *net, *intf, *tunables, *seq_no,
1280               *peer_to = NULL, *peer_buf_cr = NULL, *peer_cr = NULL,
1281               *credits = NULL, *ip2net = NULL, *smp = NULL, *child;
1282         struct lnet_ioctl_config_lnd_tunables *lnd_tunables_p = NULL;
1283         struct lnet_ioctl_config_lnd_tunables lnd_tunables;
1284         char devs[LNET_MAX_STR_LEN];
1285         char *loc = devs;
1286         int size = LNET_MAX_STR_LEN;
1287         int num;
1288         bool intf_found = false;
1289
1290         ip2net = cYAML_get_object_item(tree, "ip2net");
1291         net = cYAML_get_object_item(tree, "net");
1292         intf = cYAML_get_object_item(tree, "interfaces");
1293         if (intf != NULL) {
1294                 /* grab all the interfaces */
1295                 child = intf->cy_child;
1296                 while (child != NULL && size > 0) {
1297                         struct cYAML *lnd_params;
1298
1299                         if (child->cy_valuestring == NULL)
1300                                 goto ignore_child;
1301
1302                         if (loc > devs)
1303                                 num  = snprintf(loc, size, ",%s",
1304                                                 child->cy_valuestring);
1305                         else
1306                                 num = snprintf(loc, size, "%s",
1307                                                child->cy_valuestring);
1308                         size -= num;
1309                         loc += num;
1310                         intf_found = true;
1311
1312                         lnd_params = cYAML_get_object_item(intf,
1313                                                            "lnd tunables");
1314                         if (lnd_params != NULL) {
1315                                 const char *dev_name = child->cy_valuestring;
1316                                 lnd_tunables_p = &lnd_tunables;
1317
1318                                 lustre_interface_parse(lnd_params, dev_name,
1319                                                        lnd_tunables_p);
1320                         }
1321 ignore_child:
1322                         child = child->cy_next;
1323                 }
1324         }
1325
1326         tunables = cYAML_get_object_item(tree, "tunables");
1327         if (tunables != NULL) {
1328                 peer_to = cYAML_get_object_item(tunables, "peer_timeout");
1329                 peer_cr = cYAML_get_object_item(tunables, "peer_credits");
1330                 peer_buf_cr = cYAML_get_object_item(tunables,
1331                                                     "peer_buffer_credits");
1332                 credits = cYAML_get_object_item(tunables, "credits");
1333                 smp = cYAML_get_object_item(tunables, "CPT");
1334         }
1335         seq_no = cYAML_get_object_item(tree, "seq_no");
1336
1337         return lustre_lnet_config_net((net) ? net->cy_valuestring : NULL,
1338                                       (intf_found) ? devs : NULL,
1339                                       (ip2net) ? ip2net->cy_valuestring : NULL,
1340                                       (peer_to) ? peer_to->cy_valueint : -1,
1341                                       (peer_cr) ? peer_cr->cy_valueint : -1,
1342                                       (peer_buf_cr) ?
1343                                         peer_buf_cr->cy_valueint : -1,
1344                                       (credits) ? credits->cy_valueint : -1,
1345                                       (smp) ? smp->cy_valuestring : NULL,
1346                                       (seq_no) ? seq_no->cy_valueint : -1,
1347                                       lnd_tunables_p,
1348                                       err_rc);
1349 }
1350
1351 static int handle_yaml_config_buffers(struct cYAML *tree,
1352                                       struct cYAML **show_rc,
1353                                       struct cYAML **err_rc)
1354 {
1355         int rc;
1356         struct cYAML *tiny, *small, *large, *seq_no;
1357
1358         tiny = cYAML_get_object_item(tree, "tiny");
1359         small = cYAML_get_object_item(tree, "small");
1360         large = cYAML_get_object_item(tree, "large");
1361         seq_no = cYAML_get_object_item(tree, "seq_no");
1362
1363         rc = lustre_lnet_config_buffers((tiny) ? tiny->cy_valueint : -1,
1364                                         (small) ? small->cy_valueint : -1,
1365                                         (large) ? large->cy_valueint : -1,
1366                                         (seq_no) ? seq_no->cy_valueint : -1,
1367                                         err_rc);
1368
1369         return rc;
1370 }
1371
1372 static int handle_yaml_config_routing(struct cYAML *tree,
1373                                       struct cYAML **show_rc,
1374                                       struct cYAML **err_rc)
1375 {
1376         int rc = LUSTRE_CFG_RC_NO_ERR;
1377         struct cYAML *seq_no, *enable;
1378
1379         seq_no = cYAML_get_object_item(tree, "seq_no");
1380         enable = cYAML_get_object_item(tree, "enable");
1381
1382         if (enable) {
1383                 rc = lustre_lnet_enable_routing(enable->cy_valueint,
1384                                                 (seq_no) ?
1385                                                     seq_no->cy_valueint : -1,
1386                                                 err_rc);
1387         }
1388
1389         return rc;
1390 }
1391
1392 static int handle_yaml_del_route(struct cYAML *tree, struct cYAML **show_rc,
1393                                  struct cYAML **err_rc)
1394 {
1395         struct cYAML *net;
1396         struct cYAML *gw;
1397         struct cYAML *seq_no;
1398
1399         net = cYAML_get_object_item(tree, "net");
1400         gw = cYAML_get_object_item(tree, "gateway");
1401         seq_no = cYAML_get_object_item(tree, "seq_no");
1402
1403         return lustre_lnet_del_route((net) ? net->cy_valuestring : NULL,
1404                                      (gw) ? gw->cy_valuestring : NULL,
1405                                      (seq_no) ? seq_no->cy_valueint : -1,
1406                                      err_rc);
1407 }
1408
1409 static int handle_yaml_del_net(struct cYAML *tree, struct cYAML **show_rc,
1410                                struct cYAML **err_rc)
1411 {
1412         struct cYAML *net, *seq_no;
1413
1414         net = cYAML_get_object_item(tree, "net");
1415         seq_no = cYAML_get_object_item(tree, "seq_no");
1416
1417         return lustre_lnet_del_net((net) ? net->cy_valuestring : NULL,
1418                                    (seq_no) ? seq_no->cy_valueint : -1,
1419                                    err_rc);
1420 }
1421
1422 static int handle_yaml_del_routing(struct cYAML *tree, struct cYAML **show_rc,
1423                                    struct cYAML **err_rc)
1424 {
1425         struct cYAML *seq_no;
1426
1427         seq_no = cYAML_get_object_item(tree, "seq_no");
1428
1429         return lustre_lnet_enable_routing(0, (seq_no) ?
1430                                                 seq_no->cy_valueint : -1,
1431                                         err_rc);
1432 }
1433
1434 static int handle_yaml_show_route(struct cYAML *tree, struct cYAML **show_rc,
1435                                   struct cYAML **err_rc)
1436 {
1437         struct cYAML *net;
1438         struct cYAML *gw;
1439         struct cYAML *hop;
1440         struct cYAML *prio;
1441         struct cYAML *detail;
1442         struct cYAML *seq_no;
1443
1444         net = cYAML_get_object_item(tree, "net");
1445         gw = cYAML_get_object_item(tree, "gateway");
1446         hop = cYAML_get_object_item(tree, "hop");
1447         prio = cYAML_get_object_item(tree, "priority");
1448         detail = cYAML_get_object_item(tree, "detail");
1449         seq_no = cYAML_get_object_item(tree, "seq_no");
1450
1451         return lustre_lnet_show_route((net) ? net->cy_valuestring : NULL,
1452                                       (gw) ? gw->cy_valuestring : NULL,
1453                                       (hop) ? hop->cy_valueint : -1,
1454                                       (prio) ? prio->cy_valueint : -1,
1455                                       (detail) ? detail->cy_valueint : 0,
1456                                       (seq_no) ? seq_no->cy_valueint : -1,
1457                                       show_rc,
1458                                       err_rc);
1459 }
1460
1461 static int handle_yaml_show_net(struct cYAML *tree, struct cYAML **show_rc,
1462                                 struct cYAML **err_rc)
1463 {
1464         struct cYAML *net, *detail, *seq_no;
1465
1466         net = cYAML_get_object_item(tree, "net");
1467         detail = cYAML_get_object_item(tree, "detail");
1468         seq_no = cYAML_get_object_item(tree, "seq_no");
1469
1470         return lustre_lnet_show_net((net) ? net->cy_valuestring : NULL,
1471                                     (detail) ? detail->cy_valueint : 0,
1472                                     (seq_no) ? seq_no->cy_valueint : -1,
1473                                     show_rc,
1474                                     err_rc);
1475 }
1476
1477 static int handle_yaml_show_routing(struct cYAML *tree, struct cYAML **show_rc,
1478                                     struct cYAML **err_rc)
1479 {
1480         struct cYAML *seq_no;
1481
1482         seq_no = cYAML_get_object_item(tree, "seq_no");
1483
1484         return lustre_lnet_show_routing((seq_no) ? seq_no->cy_valueint : -1,
1485                                         show_rc, err_rc);
1486 }
1487
1488 static int handle_yaml_show_credits(struct cYAML *tree, struct cYAML **show_rc,
1489                                     struct cYAML **err_rc)
1490 {
1491         struct cYAML *seq_no;
1492
1493         seq_no = cYAML_get_object_item(tree, "seq_no");
1494
1495         return lustre_lnet_show_peer_credits((seq_no) ?
1496                                                 seq_no->cy_valueint : -1,
1497                                              show_rc, err_rc);
1498 }
1499
1500 static int handle_yaml_show_stats(struct cYAML *tree, struct cYAML **show_rc,
1501                                   struct cYAML **err_rc)
1502 {
1503         struct cYAML *seq_no;
1504
1505         seq_no = cYAML_get_object_item(tree, "seq_no");
1506
1507         return lustre_lnet_show_stats((seq_no) ? seq_no->cy_valueint : -1,
1508                                       show_rc, err_rc);
1509 }
1510
1511 struct lookup_cmd_hdlr_tbl {
1512         char *name;
1513         cmd_handler_t cb;
1514 };
1515
1516 static struct lookup_cmd_hdlr_tbl lookup_config_tbl[] = {
1517         {"route", handle_yaml_config_route},
1518         {"net", handle_yaml_config_net},
1519         {"routing", handle_yaml_config_routing},
1520         {"buffers", handle_yaml_config_buffers},
1521         {NULL, NULL}
1522 };
1523
1524 static struct lookup_cmd_hdlr_tbl lookup_del_tbl[] = {
1525         {"route", handle_yaml_del_route},
1526         {"net", handle_yaml_del_net},
1527         {"routing", handle_yaml_del_routing},
1528         {NULL, NULL}
1529 };
1530
1531 static struct lookup_cmd_hdlr_tbl lookup_show_tbl[] = {
1532         {"route", handle_yaml_show_route},
1533         {"net", handle_yaml_show_net},
1534         {"buffers", handle_yaml_show_routing},
1535         {"routing", handle_yaml_show_routing},
1536         {"credits", handle_yaml_show_credits},
1537         {"statistics", handle_yaml_show_stats},
1538         {NULL, NULL}
1539 };
1540
1541 static cmd_handler_t lookup_fn(char *key,
1542                                struct lookup_cmd_hdlr_tbl *tbl)
1543 {
1544         int i;
1545         if (key == NULL)
1546                 return NULL;
1547
1548         for (i = 0; tbl[i].name != NULL; i++) {
1549                 if (strncmp(key, tbl[i].name, strlen(tbl[i].name)) == 0)
1550                         return tbl[i].cb;
1551         }
1552
1553         return NULL;
1554 }
1555
1556 static int lustre_yaml_cb_helper(char *f, struct lookup_cmd_hdlr_tbl *table,
1557                                  struct cYAML **show_rc, struct cYAML **err_rc)
1558 {
1559         struct cYAML *tree, *item = NULL, *head, *child;
1560         cmd_handler_t cb;
1561         char err_str[LNET_MAX_STR_LEN];
1562         int rc = LUSTRE_CFG_RC_NO_ERR, return_rc = LUSTRE_CFG_RC_NO_ERR;
1563
1564         tree = cYAML_build_tree(f, NULL, 0, err_rc);
1565         if (tree == NULL)
1566                 return LUSTRE_CFG_RC_BAD_PARAM;
1567
1568         child = tree->cy_child;
1569         while (child != NULL) {
1570                 cb = lookup_fn(child->cy_string, table);
1571                 if (cb == NULL) {
1572                         snprintf(err_str, sizeof(err_str),
1573                                 "\"call back for '%s' not found\"",
1574                                 child->cy_string);
1575                         cYAML_build_error(LUSTRE_CFG_RC_BAD_PARAM, -1,
1576                                         "yaml", "helper", err_str, err_rc);
1577                         goto out;
1578                 }
1579
1580                 if (cYAML_is_sequence(child)) {
1581                         while ((head = cYAML_get_next_seq_item(child, &item))
1582                                != NULL) {
1583                                 rc = cb(head, show_rc, err_rc);
1584                                 if (rc != LUSTRE_CFG_RC_NO_ERR)
1585                                         return_rc = rc;
1586                         }
1587                 } else {
1588                         rc = cb(child, show_rc, err_rc);
1589                         if (rc != LUSTRE_CFG_RC_NO_ERR)
1590                                 return_rc = rc;
1591                 }
1592                 item = NULL;
1593                 child = child->cy_next;
1594         }
1595
1596 out:
1597         cYAML_free_tree(tree);
1598
1599         return return_rc;
1600 }
1601
1602 int lustre_yaml_config(char *f, struct cYAML **err_rc)
1603 {
1604         return lustre_yaml_cb_helper(f, lookup_config_tbl,
1605                                      NULL, err_rc);
1606 }
1607
1608 int lustre_yaml_del(char *f, struct cYAML **err_rc)
1609 {
1610         return lustre_yaml_cb_helper(f, lookup_del_tbl,
1611                                      NULL, err_rc);
1612 }
1613
1614 int lustre_yaml_show(char *f, struct cYAML **show_rc, struct cYAML **err_rc)
1615 {
1616         return lustre_yaml_cb_helper(f, lookup_show_tbl,
1617                                      show_rc, err_rc);
1618 }