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, 2017, 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 <byteswap.h>
  39 #include <netdb.h>
  40 #include <stdio.h>
  41 #include <stdlib.h>
  42 #include <string.h>
  43 #include <unistd.h>
  44 #include <sys/ioctl.h>
  45 #include <net/if.h>
  46 #include <libcfs/util/ioctl.h>
  47 #include <linux/lnet/lnetctl.h>
  48 #include "liblnd.h"
  49 #include <sys/types.h>
  50 #include <sys/stat.h>
  51 #include <fcntl.h>
  52 #include <ifaddrs.h>
  53 #include "liblnetconfig.h"
  54
  55 #define CONFIG_CMD              "configure"
  56 #define UNCONFIG_CMD            "unconfigure"
  57 #define ADD_CMD                 "add"
  58 #define DEL_CMD                 "del"
  59 #define SHOW_CMD                "show"
  60 #define DBG_CMD                 "dbg"
  61 #define MANAGE_CMD              "manage"
  62
  63 #define MAX_NUM_IPS             128
  64
  65 #define modparam_path "/sys/module/lnet/parameters/"
  66 #define gni_nid_path "/proc/cray_xt/"
  67
  68 const char *gmsg_stat_names[] = {"sent_stats", "received_stats",
  69                                  "dropped_stats"};
  70
  71 /*
  72  * lustre_lnet_ip_range_descr
  73  *      Describes an IP range.
  74  *      Each octect is an expression
  75  */
  76 struct lustre_lnet_ip_range_descr {
  77         struct list_head ipr_entry;
  78         struct list_head ipr_expr;
  79 };
  80
  81 /*
  82  * lustre_lnet_ip2nets
  83  *      Describes an ip2nets rule. This can be on a list of rules.
  84  */
  85 struct lustre_lnet_ip2nets {
  86         struct lnet_dlc_network_descr ip2nets_net;
  87         struct list_head ip2nets_ip_ranges;
  88 };
  89
  90 int open_sysfs_file(const char *path, const char *attr, const int mode)
  91 {
  92         int fd;
  93         char filename[LNET_MAX_STR_LEN];
  94
  95         if (strlen(path) + strlen(attr) >= LNET_MAX_STR_LEN)
  96                 return -1;
  97
  98         snprintf(filename, sizeof(filename), "%s%s",
  99                  path, attr);
 100
 101         fd = open(filename, mode);
 102
 103         return fd;
 104 }
 105
 106 static int read_sysfs_file(const char *path, const char *attr,
 107                            void *val, const size_t size, const int nelem)
 108 {
 109         int fd;
 110         int rc = LUSTRE_CFG_RC_GENERIC_ERR;
 111
 112         fd = open_sysfs_file(path, attr, O_RDONLY);
 113         if (fd == -1)
 114                 return LUSTRE_CFG_RC_NO_MATCH;
 115
 116         if (read(fd, val, size * nelem) == -1)
 117                 goto close_fd;
 118
 119         rc = LUSTRE_CFG_RC_NO_ERR;
 120
 121 close_fd:
 122         close(fd);
 123         return rc;
 124 }
 125
 126 static int write_sysfs_file(const char *path, const char *attr,
 127                             void *val, const size_t size, const int nelem)
 128 {
 129         int fd;
 130         int rc = LUSTRE_CFG_RC_GENERIC_ERR;
 131
 132         fd = open_sysfs_file(path, attr, O_WRONLY | O_TRUNC);
 133         if (fd == -1)
 134                 return LUSTRE_CFG_RC_NO_MATCH;
 135
 136         if (write(fd, val, size * nelem) == -1)
 137                 goto close_fd;
 138
 139         rc = LUSTRE_CFG_RC_NO_ERR;
 140
 141 close_fd:
 142         close(fd);
 143         return rc;
 144 }
 145
 146 /*
 147  * free_intf_descr
 148  *      frees the memory allocated for an intf descriptor.
 149  */
 150 void free_intf_descr(struct lnet_dlc_intf_descr *intf_descr)
 151 {
 152         if (!intf_descr)
 153                 return;
 154
 155         if (intf_descr->cpt_expr != NULL)
 156                 cfs_expr_list_free(intf_descr->cpt_expr);
 157         free(intf_descr);
 158 }
 159
 160 /*
 161  * lustre_lnet_add_ip_range
 162  * Formatting:
 163  *      given a string of the format:
 164  *      <expr.expr.expr.expr> parse each expr into
 165  *      a lustre_lnet_ip_range_descr structure and insert on the list.
 166  *
 167  *      This function is called from
 168  *              YAML on each ip-range.
 169  *              As a result of lnetctl command
 170  *              When building a NID or P2P selection rules
 171  */
 172 int lustre_lnet_add_ip_range(struct list_head *list, char *str_ip_range)
 173 {
 174         struct lustre_lnet_ip_range_descr *ip_range;
 175         int rc;
 176
 177         ip_range = calloc(1, sizeof(*ip_range));
 178         if (ip_range == NULL)
 179                 return LUSTRE_CFG_RC_OUT_OF_MEM;
 180
 181         INIT_LIST_HEAD(&ip_range->ipr_entry);
 182         INIT_LIST_HEAD(&ip_range->ipr_expr);
 183
 184         rc = cfs_ip_addr_parse(str_ip_range, strlen(str_ip_range),
 185                                &ip_range->ipr_expr);
 186         if (rc != 0)
 187                 return LUSTRE_CFG_RC_BAD_PARAM;
 188
 189         list_add_tail(&ip_range->ipr_entry, list);
 190
 191         return LUSTRE_CFG_RC_NO_ERR;
 192 }
 193
 194 int lustre_lnet_add_intf_descr(struct list_head *list, char *intf, int len)
 195 {
 196         char *open_sq_bracket = NULL, *close_sq_bracket = NULL,
 197              *intf_name;
 198         struct lnet_dlc_intf_descr *intf_descr = NULL;
 199         int rc;
 200         char intf_string[LNET_MAX_STR_LEN];
 201
 202         if (len >= LNET_MAX_STR_LEN)
 203                 return LUSTRE_CFG_RC_BAD_PARAM;
 204
 205         strncpy(intf_string, intf, len);
 206         intf_string[len] = '\0';
 207
 208         intf_descr = calloc(1, sizeof(*intf_descr));
 209         if (intf_descr == NULL)
 210                 return LUSTRE_CFG_RC_OUT_OF_MEM;
 211
 212         INIT_LIST_HEAD(&intf_descr->intf_on_network);
 213
 214         intf_name = intf_string;
 215         open_sq_bracket = strchr(intf_string, '[');
 216         if (open_sq_bracket != NULL) {
 217                 close_sq_bracket = strchr(intf_string, ']');
 218                 if (close_sq_bracket == NULL) {
 219                         free(intf_descr);
 220                         return LUSTRE_CFG_RC_BAD_PARAM;
 221                 }
 222                 rc = cfs_expr_list_parse(open_sq_bracket,
 223                                          strlen(open_sq_bracket), 0, UINT_MAX,
 224                                          &intf_descr->cpt_expr);
 225                 if (rc < 0) {
 226                         free(intf_descr);
 227                         return LUSTRE_CFG_RC_BAD_PARAM;
 228                 }
 229                 strncpy(intf_descr->intf_name, intf_name,
 230                         open_sq_bracket - intf_name);
 231                 intf_descr->intf_name[open_sq_bracket - intf_name] = '\0';
 232         } else {
 233                 strcpy(intf_descr->intf_name, intf_name);
 234                 intf_descr->cpt_expr = NULL;
 235         }
 236
 237         list_add_tail(&intf_descr->intf_on_network, list);
 238
 239         return LUSTRE_CFG_RC_NO_ERR;
 240 }
 241
 242 void lustre_lnet_init_nw_descr(struct lnet_dlc_network_descr *nw_descr)
 243 {
 244         if (nw_descr != NULL) {
 245                 nw_descr->nw_id = 0;
 246                 INIT_LIST_HEAD(&nw_descr->network_on_rule);
 247                 INIT_LIST_HEAD(&nw_descr->nw_intflist);
 248         }
 249 }
 250
 251 static char *get_next_delimiter_in_nid(char *str, char sep)
 252 {
 253         char *at, *comma;
 254
 255         /* first find the '@' */
 256         at = strchr(str, '@');
 257         if (!at)
 258                 return str;
 259
 260         /* now that you found the at find the sep after */
 261         comma = strchr(at, sep);
 262         return comma;
 263 }
 264
 265 int lustre_lnet_parse_nids(char *nids, char **array, int size,
 266                            char ***out_array)
 267 {
 268         int num_nids = 0;
 269         char *comma = nids, *cur, *entry;
 270         char **new_array;
 271         int i, len, start = 0, finish = 0;
 272
 273         if (nids == NULL || strlen(nids) == 0)
 274                 return size;
 275
 276         /* count the number or new nids, by counting the number of comma*/
 277         while (comma) {
 278                 comma = get_next_delimiter_in_nid(comma, ',');
 279                 if (comma) {
 280                         comma++;
 281                         num_nids++;
 282                 } else {
 283                         num_nids++;
 284                 }
 285         }
 286
 287         /*
 288          * if the array is not NULL allocate a large enough array to house
 289          * the old and new entries
 290          */
 291         new_array = calloc(sizeof(char*),
 292                            (size > 0) ? size + num_nids : num_nids);
 293
 294         if (!new_array)
 295                 goto failed;
 296
 297         /* parse our the new nids and add them to the tail of the array */
 298         comma = nids;
 299         cur = nids;
 300         start = (size > 0) ? size: 0;
 301         finish = (size > 0) ? size + num_nids : num_nids;
 302         for (i = start; i < finish; i++) {
 303                 comma = get_next_delimiter_in_nid(comma, ',');
 304                 if (!comma)
 305                         /*
 306                          * the length of the string to be parsed out is
 307                          * from cur to end of string. So it's good enough
 308                          * to strlen(cur)
 309                          */
 310                         len = strlen(cur) + 1;
 311                 else
 312                         /* length of the string is comma - cur */
 313                         len = (comma - cur) + 1;
 314
 315                 entry = calloc(1, len);
 316                 if (!entry) {
 317                         finish = i > 0 ? i - 1: 0;
 318                         goto failed;
 319                 }
 320                 strncpy(entry, cur, len - 1);
 321                 entry[len] = '\0';
 322                 new_array[i] = entry;
 323                 if (comma) {
 324                         comma++;
 325                         cur = comma;
 326                 }
 327         }
 328
 329         /* add the old entries in the array and delete the old array*/
 330         for (i = 0; i < size; i++)
 331                 new_array[i] = array[i];
 332
 333         if (array)
 334                 free(array);
 335
 336         *out_array = new_array;
 337
 338         return finish;
 339
 340 failed:
 341         for (i = start; i < finish; i++)
 342                 free(new_array[i]);
 343         if (new_array)
 344                 free(new_array);
 345
 346         return size;
 347 }
 348
 349 /*
 350  * format expected:
 351  *      <intf>[<expr>], <intf>[<expr>],..
 352  */
 353 int lustre_lnet_parse_interfaces(char *intf_str,
 354                                  struct lnet_dlc_network_descr *nw_descr)
 355 {
 356         char *open_square;
 357         char *close_square;
 358         char *comma;
 359         char *cur = intf_str, *next = NULL;
 360         char *end = intf_str + strlen(intf_str);
 361         int rc, len;
 362         struct lnet_dlc_intf_descr *intf_descr, *tmp;
 363
 364         if (nw_descr == NULL)
 365                 return LUSTRE_CFG_RC_BAD_PARAM;
 366
 367         while (cur < end) {
 368                 open_square = strchr(cur, '[');
 369                 if (open_square != NULL) {
 370                         close_square = strchr(cur, ']');
 371                         if (close_square == NULL) {
 372                                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 373                                 goto failed;
 374                         }
 375
 376                         comma = strchr(cur, ',');
 377                         if (comma != NULL && comma > close_square) {
 378                                 next = comma + 1;
 379                                 len = next - close_square;
 380                         } else {
 381                                 len = strlen(cur);
 382                                 next = cur + len;
 383                         }
 384                 } else {
 385                         comma = strchr(cur, ',');
 386                         if (comma != NULL) {
 387                                 next = comma + 1;
 388                                 len = comma - cur;
 389                         } else {
 390                                 len = strlen(cur);
 391                                 next = cur + len;
 392                         }
 393                 }
 394
 395                 rc = lustre_lnet_add_intf_descr(&nw_descr->nw_intflist, cur, len);
 396                 if (rc != LUSTRE_CFG_RC_NO_ERR)
 397                         goto failed;
 398
 399                 cur = next;
 400         }
 401
 402         return LUSTRE_CFG_RC_NO_ERR;
 403
 404 failed:
 405         list_for_each_entry_safe(intf_descr, tmp, &nw_descr->nw_intflist,
 406                                  intf_on_network) {
 407                 list_del(&intf_descr->intf_on_network);
 408                 free_intf_descr(intf_descr);
 409         }
 410
 411         return rc;
 412 }
 413
 414 int lustre_lnet_config_lib_init(void)
 415 {
 416         return register_ioc_dev(LNET_DEV_ID, LNET_DEV_PATH);
 417 }
 418
 419 void lustre_lnet_config_lib_uninit(void)
 420 {
 421         unregister_ioc_dev(LNET_DEV_ID);
 422 }
 423
 424 int lustre_lnet_config_ni_system(bool up, bool load_ni_from_mod,
 425                                  int seq_no, struct cYAML **err_rc)
 426 {
 427         struct libcfs_ioctl_data data;
 428         unsigned int opc;
 429         int rc;
 430         char err_str[LNET_MAX_STR_LEN];
 431
 432         snprintf(err_str, sizeof(err_str), "\"Success\"");
 433
 434         LIBCFS_IOC_INIT(data);
 435
 436         /* Reverse logic is used here in order not to change
 437          * the lctl utility */
 438         data.ioc_flags = load_ni_from_mod ? 0 : 1;
 439
 440         opc = up ? IOC_LIBCFS_CONFIGURE : IOC_LIBCFS_UNCONFIGURE;
 441
 442         rc = l_ioctl(LNET_DEV_ID, opc, &data);
 443         if (rc != 0) {
 444                 snprintf(err_str,
 445                         sizeof(err_str),
 446                         "\"LNet %s error: %s\"", (up) ? "configure" :
 447                         "unconfigure", strerror(errno));
 448                 rc = -errno;
 449         }
 450
 451         cYAML_build_error(rc, seq_no, (up) ? CONFIG_CMD : UNCONFIG_CMD,
 452                           "lnet", err_str, err_rc);
 453
 454         return rc;
 455 }
 456
 457 static int dispatch_peer_ni_cmd(lnet_nid_t pnid, lnet_nid_t nid, __u32 cmd,
 458                                 struct lnet_ioctl_peer_cfg *data,
 459                                 char *err_str, char *cmd_str)
 460 {
 461         int rc;
 462
 463         data->prcfg_prim_nid = pnid;
 464         data->prcfg_cfg_nid = nid;
 465
 466         rc = l_ioctl(LNET_DEV_ID, cmd, data);
 467         if (rc != 0) {
 468                 rc = -errno;
 469                 snprintf(err_str,
 470                         LNET_MAX_STR_LEN,
 471                         "\"cannot %s peer ni: %s\"",
 472                         (cmd_str) ? cmd_str : "add", strerror(errno));
 473                 err_str[LNET_MAX_STR_LEN - 1] = '\0';
 474         }
 475
 476         return rc;
 477 }
 478
 479 static int infra_ping_nid(char *ping_nids, char *oper, int param, int ioc_call,
 480                           int seq_no, struct cYAML **show_rc,
 481                           struct cYAML **err_rc)
 482 {
 483         void *data = NULL;
 484         struct lnet_ioctl_ping_data ping;
 485         struct cYAML *root = NULL, *ping_node = NULL, *item = NULL,
 486                      *first_seq = NULL, *tmp = NULL, *peer_ni = NULL;
 487         struct lnet_process_id id;
 488         char err_str[LNET_MAX_STR_LEN] = {0};
 489         char *sep, *token, *end;
 490         char buf[6];
 491         size_t len;
 492         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
 493         int i;
 494         bool flag = false;
 495
 496         len = (sizeof(struct lnet_process_id) * LNET_INTERFACES_MAX_DEFAULT);
 497
 498         data = calloc(1, len);
 499         if (data == NULL)
 500                 goto out;
 501
 502         /* create struct cYAML root object */
 503         root = cYAML_create_object(NULL, NULL);
 504         if (root == NULL)
 505                 goto out;
 506
 507         ping_node = cYAML_create_seq(root, oper);
 508         if (ping_node == NULL)
 509                 goto out;
 510
 511         /* tokenise each nid in string ping_nids */
 512         token = strtok(ping_nids, ",");
 513
 514         do {
 515                 item = cYAML_create_seq_item(ping_node);
 516                 if (item == NULL)
 517                         goto out;
 518
 519                 if (first_seq == NULL)
 520                         first_seq = item;
 521
 522                 /* check if '-' is a part of NID, token */
 523                 sep = strchr(token, '-');
 524                 if (sep == NULL) {
 525                         id.pid = LNET_PID_ANY;
 526                         /* if no net is specified, libcfs_str2nid() will assume tcp */
 527                         id.nid = libcfs_str2nid(token);
 528                         if (id.nid == LNET_NID_ANY) {
 529                                 snprintf(err_str, sizeof(err_str),
 530                                          "\"cannot parse NID '%s'\"",
 531                                          token);
 532                                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 533                                 cYAML_build_error(rc, seq_no, MANAGE_CMD,
 534                                                   oper, err_str, err_rc);
 535                                 continue;
 536                         }
 537                 } else {
 538                         if (token[0] == 'u' || token[0] == 'U')
 539                                 id.pid = (strtoul(&token[1], &end, 0) |
 540                                           (LNET_PID_USERFLAG));
 541                         else
 542                                 id.pid = strtoul(token, &end, 0);
 543
 544                         /* assuming '-' is part of hostname */
 545                         if (end != sep) {
 546                                 id.pid = LNET_PID_ANY;
 547                                 id.nid = libcfs_str2nid(token);
 548                                 if (id.nid == LNET_NID_ANY) {
 549                                         snprintf(err_str, sizeof(err_str),
 550                                                  "\"cannot parse NID '%s'\"",
 551                                                  token);
 552                                         rc = LUSTRE_CFG_RC_BAD_PARAM;
 553                                         cYAML_build_error(rc, seq_no, MANAGE_CMD,
 554                                                           oper, err_str,
 555                                                           err_rc);
 556                                         continue;
 557                                 }
 558                         } else {
 559                                 id.nid = libcfs_str2nid(sep + 1);
 560                                 if (id.nid == LNET_NID_ANY) {
 561                                         snprintf(err_str, sizeof(err_str),
 562                                                  "\"cannot parse NID '%s'\"",
 563                                                  token);
 564                                         rc = LUSTRE_CFG_RC_BAD_PARAM;
 565                                         cYAML_build_error(rc, seq_no, MANAGE_CMD,
 566                                                           oper, err_str,
 567                                                           err_rc);
 568                                         continue;
 569                                 }
 570                         }
 571                 }
 572                 LIBCFS_IOC_INIT_V2(ping, ping_hdr);
 573                 ping.ping_hdr.ioc_len = sizeof(ping);
 574                 ping.ping_id          = id;
 575                 ping.op_param         = param;
 576                 ping.ping_count       = LNET_INTERFACES_MAX_DEFAULT;
 577                 ping.ping_buf         = data;
 578
 579                 rc = l_ioctl(LNET_DEV_ID, ioc_call, &ping);
 580                 if (rc != 0) {
 581                         snprintf(err_str,
 582                                  sizeof(err_str), "failed to %s %s: %s\n", oper,
 583                                  id.pid == LNET_PID_ANY ?
 584                                  libcfs_nid2str(id.nid) :
 585                                  libcfs_id2str(id), strerror(errno));
 586                         rc = LUSTRE_CFG_RC_BAD_PARAM;
 587                         cYAML_build_error(rc, seq_no, MANAGE_CMD,
 588                                           oper, err_str, err_rc);
 589                         continue;
 590                 }
 591
 592                 if (cYAML_create_string(item, "primary nid",
 593                                         libcfs_nid2str(ping.ping_id.nid)) == NULL)
 594                         goto out;
 595
 596                 if (cYAML_create_string(item, "Multi-Rail", ping.mr_info ?
 597                                         "True" : "False") == NULL)
 598                         goto out;
 599
 600                 tmp = cYAML_create_seq(item, "peer ni");
 601                 if (tmp == NULL)
 602                         goto out;
 603
 604                 for (i = 0; i < ping.ping_count; i++) {
 605                         if (!strcmp(libcfs_nid2str(ping.ping_buf[i].nid),
 606                                     "0@lo"))
 607                                 continue;
 608                         peer_ni = cYAML_create_seq_item(tmp);
 609                         if (peer_ni == NULL)
 610                                 goto out;
 611                         memset(buf, 0, sizeof buf);
 612                         snprintf(buf, sizeof buf, "nid");
 613                         if (cYAML_create_string(peer_ni, buf,
 614                                                 libcfs_nid2str(ping.ping_buf[i].nid)) == NULL)
 615                                 goto out;
 616                 }
 617
 618                 flag = true;
 619
 620         } while ((token = strtok(NULL, ",")) != NULL);
 621
 622         if (flag)
 623                 rc = LUSTRE_CFG_RC_NO_ERR;
 624
 625 out:
 626         if (data)
 627                 free(data);
 628         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR) {
 629                 cYAML_free_tree(root);
 630         } else if (show_rc != NULL && *show_rc != NULL) {
 631                 struct cYAML *show_node;
 632                 show_node = cYAML_get_object_item(*show_rc, oper);
 633                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
 634                         cYAML_insert_child(show_node, first_seq);
 635                         free(ping_node);
 636                         free(root);
 637                 } else if (show_node == NULL) {
 638                         cYAML_insert_sibling((*show_rc)->cy_child,
 639                                              ping_node);
 640                         free(root);
 641                 } else {
 642                         cYAML_free_tree(root);
 643                 }
 644         } else {
 645                 *show_rc = root;
 646         }
 647
 648         return rc;
 649 }
 650
 651 int lustre_lnet_ping_nid(char *ping_nids, int timeout, int seq_no,
 652                          struct cYAML **show_rc, struct cYAML **err_rc)
 653 {
 654         int rc;
 655
 656         rc = infra_ping_nid(ping_nids, "ping", timeout, IOC_LIBCFS_PING_PEER,
 657                             seq_no, show_rc, err_rc);
 658         return rc;
 659 }
 660
 661 int lustre_lnet_discover_nid(char *ping_nids, int force, int seq_no,
 662                          struct cYAML **show_rc, struct cYAML **err_rc)
 663 {
 664         int rc;
 665
 666         rc = infra_ping_nid(ping_nids, "discover", force, IOC_LIBCFS_DISCOVER,
 667                             seq_no, show_rc, err_rc);
 668         return rc;
 669 }
 670
 671 static void lustre_lnet_clean_ip2nets(struct lustre_lnet_ip2nets *ip2nets)
 672 {
 673         struct lustre_lnet_ip_range_descr *ipr, *tmp;
 674         struct cfs_expr_list *el, *el_tmp;
 675
 676         list_for_each_entry_safe(ipr, tmp,
 677                                  &ip2nets->ip2nets_ip_ranges,
 678                                  ipr_entry) {
 679                 list_del(&ipr->ipr_entry);
 680                 list_for_each_entry_safe(el, el_tmp, &ipr->ipr_expr,
 681                                          el_link) {
 682                         list_del(&el->el_link);
 683                         cfs_expr_list_free(el);
 684                 }
 685                 free(ipr);
 686         }
 687 }
 688
 689 /*
 690  * returns an rc < 0 if there is an error
 691  * otherwise it returns the number IPs generated
 692  *  it also has out params: net - network name
 693  */
 694 static int lnet_expr2ips(char *nidstr, __u32 *ip_list,
 695                          struct lustre_lnet_ip2nets *ip2nets,
 696                          __u32 *net, char *err_str)
 697 {
 698         struct lustre_lnet_ip_range_descr *ipr;
 699         char *comp1, *comp2;
 700         int ip_idx = MAX_NUM_IPS - 1;
 701         int ip_range_len, rc = LUSTRE_CFG_RC_NO_ERR;
 702         __u32 net_type;
 703         char ip_range[LNET_MAX_STR_LEN];
 704
 705         /* separate the two components of the NID */
 706         comp1 = nidstr;
 707         comp2 = strchr(nidstr, '@');
 708         if (comp2 == NULL) {
 709                 snprintf(err_str,
 710                         LNET_MAX_STR_LEN,
 711                         "\"cannot parse NID %s\"", nidstr);
 712                 err_str[LNET_MAX_STR_LEN - 1] = '\0';
 713                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 714                 goto out;
 715         }
 716
 717         /* length of the expected ip-range */
 718         ip_range_len = comp2 - comp1;
 719         if (ip_range_len >= LNET_MAX_STR_LEN) {
 720                 snprintf(err_str,
 721                         LNET_MAX_STR_LEN,
 722                         "\"cannot parse ip_range '%s'\"", ip_range);
 723                 err_str[LNET_MAX_STR_LEN - 1] = '\0';
 724                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 725                 goto out;
 726         }
 727
 728         /* move beyond '@' */
 729         comp2++;
 730
 731         /*
 732          * if the net component is either o2ib or tcp then we expect
 733          * an IP range which could only be a single IP address.
 734          * Parse that.
 735          */
 736         *net = libcfs_str2net(comp2);
 737         net_type = LNET_NETTYP(*net);
 738         /* expression support is for o2iblnd and socklnd only */
 739         if (net_type != O2IBLND && net_type != SOCKLND)
 740                 return LUSTRE_CFG_RC_SKIP;
 741
 742         strncpy(ip_range, comp1, ip_range_len);
 743         ip_range[ip_range_len] = '\0';
 744         ip2nets->ip2nets_net.nw_id = *net;
 745
 746         rc = lustre_lnet_add_ip_range(&ip2nets->ip2nets_ip_ranges, ip_range);
 747         if (rc != LUSTRE_CFG_RC_NO_ERR) {
 748                 snprintf(err_str,
 749                         LNET_MAX_STR_LEN,
 750                         "\"cannot parse ip_range '%s'\"", ip_range);
 751                 err_str[LNET_MAX_STR_LEN - 1] = '\0';
 752                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 753                 goto out;
 754         }
 755
 756         /*
 757         * Generate all the IP Addresses from the parsed range. For sanity
 758         * we allow only a max of MAX_NUM_IPS nids to be configured for
 759         * a single peer.
 760         */
 761         list_for_each_entry(ipr, &ip2nets->ip2nets_ip_ranges, ipr_entry)
 762                 ip_idx = cfs_ip_addr_range_gen(ip_list, MAX_NUM_IPS,
 763                                                 &ipr->ipr_expr);
 764
 765         if (ip_idx == MAX_NUM_IPS - 1) {
 766                 snprintf(err_str, LNET_MAX_STR_LEN,
 767                                 "no NIDs provided for configuration");
 768                 err_str[LNET_MAX_STR_LEN - 1] = '\0';
 769                 rc = LUSTRE_CFG_RC_NO_MATCH;
 770                 goto out;
 771         } else if (ip_idx == -1) {
 772                 rc = LUSTRE_CFG_RC_LAST_ELEM;
 773         } else {
 774                 rc = ip_idx;
 775         }
 776
 777 out:
 778         return rc;
 779 }
 780
 781 static int lustre_lnet_handle_peer_ip2nets(char **nid, int num_nids, bool mr,
 782                                            bool range, __u32 cmd,
 783                                            char *cmd_type, char *err_str)
 784 {
 785         __u32 net = LNET_NIDNET(LNET_NID_ANY);
 786         int ip_idx;
 787         int i, j, rc = LUSTRE_CFG_RC_NO_ERR;
 788         __u32 ip_list[MAX_NUM_IPS];
 789         struct lustre_lnet_ip2nets ip2nets;
 790         struct lnet_ioctl_peer_cfg data;
 791         lnet_nid_t peer_nid;
 792         lnet_nid_t prim_nid = LNET_NID_ANY;
 793
 794         /* initialize all lists */
 795         INIT_LIST_HEAD(&ip2nets.ip2nets_ip_ranges);
 796         INIT_LIST_HEAD(&ip2nets.ip2nets_net.network_on_rule);
 797         INIT_LIST_HEAD(&ip2nets.ip2nets_net.nw_intflist);
 798
 799         /* each nid entry is an expression */
 800         for (i = 0; i < num_nids; i++) {
 801                 if (!range && i == 0)
 802                         prim_nid = libcfs_str2nid(nid[0]);
 803                 else if (range)
 804                         prim_nid = LNET_NID_ANY;
 805
 806                 rc = lnet_expr2ips(nid[i], ip_list, &ip2nets, &net, err_str);
 807                 if (rc == LUSTRE_CFG_RC_SKIP)
 808                         continue;
 809                 else if (rc == LUSTRE_CFG_RC_LAST_ELEM)
 810                         rc = -1;
 811                 else if (rc < LUSTRE_CFG_RC_NO_ERR)
 812                         goto out;
 813
 814                 ip_idx = rc;
 815
 816                 for (j = MAX_NUM_IPS - 1; j > ip_idx; j--) {
 817                         peer_nid = LNET_MKNID(net, ip_list[j]);
 818                         if (peer_nid == LNET_NID_ANY) {
 819                                 snprintf(err_str,
 820                                         LNET_MAX_STR_LEN,
 821                                         "\"cannot parse NID\"");
 822                                 err_str[LNET_MAX_STR_LEN - 1] = '\0';
 823                                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 824                                 goto out;
 825                         }
 826
 827                         LIBCFS_IOC_INIT_V2(data, prcfg_hdr);
 828                         data.prcfg_mr = mr;
 829
 830                         if (prim_nid == LNET_NID_ANY && j == MAX_NUM_IPS - 1) {
 831                                 prim_nid = peer_nid;
 832                                 peer_nid = LNET_NID_ANY;
 833                         }
 834
 835                         if (!range && num_nids > 1 && i == 0 &&
 836                             cmd == IOC_LIBCFS_DEL_PEER_NI)
 837                                 continue;
 838                         else if (!range && i == 0)
 839                                 peer_nid = LNET_NID_ANY;
 840
 841                         /*
 842                         * If prim_nid is not provided then the first nid in the
 843                         * list becomes the prim_nid. First time round the loop
 844                         * use LNET_NID_ANY for the first parameter, then use
 845                         * nid[0] as the key nid after wards
 846                         */
 847                         rc = dispatch_peer_ni_cmd(prim_nid, peer_nid, cmd,
 848                                                   &data, err_str, cmd_type);
 849                         if (rc != 0)
 850                                 goto out;
 851
 852                         /*
 853                          * we just deleted the entire peer using the
 854                          * primary_nid. So don't bother iterating through
 855                          * the rest of the nids
 856                          */
 857                         if (prim_nid != LNET_NID_ANY &&
 858                             peer_nid == LNET_NID_ANY &&
 859                             cmd == IOC_LIBCFS_DEL_PEER_NI)
 860                                 goto next_nid;
 861                 }
 862 next_nid:
 863                 lustre_lnet_clean_ip2nets(&ip2nets);
 864         }
 865
 866 out:
 867         lustre_lnet_clean_ip2nets(&ip2nets);
 868         return rc;
 869 }
 870
 871 int lustre_lnet_config_peer_nid(char *pnid, char **nid, int num_nids,
 872                                 bool mr, bool ip2nets, int seq_no,
 873                                 struct cYAML **err_rc)
 874 {
 875         int rc = LUSTRE_CFG_RC_NO_ERR;
 876         char err_str[LNET_MAX_STR_LEN] = {0};
 877         char **nid_array = NULL;
 878
 879         snprintf(err_str, sizeof(err_str), "\"Success\"");
 880
 881         if (ip2nets) {
 882                 rc = lustre_lnet_handle_peer_ip2nets(nid, num_nids, mr,
 883                                                 ip2nets, IOC_LIBCFS_ADD_PEER_NI,
 884                                                 ADD_CMD, err_str);
 885                 goto out;
 886         }
 887
 888         if (pnid) {
 889                 if (libcfs_str2nid(pnid) == LNET_NID_ANY) {
 890                         snprintf(err_str, sizeof(err_str),
 891                                  "bad primary NID: '%s'",
 892                                  pnid);
 893                         rc = LUSTRE_CFG_RC_MISSING_PARAM;
 894                         goto out;
 895                 }
 896
 897                 num_nids++;
 898
 899                 nid_array = calloc(sizeof(*nid_array), num_nids);
 900                 if (!nid_array) {
 901                         snprintf(err_str, sizeof(err_str),
 902                                         "out of memory");
 903                         rc = LUSTRE_CFG_RC_OUT_OF_MEM;
 904                         goto out;
 905                 }
 906                 nid_array[0] = pnid;
 907                 memcpy(&nid_array[1], nid, sizeof(*nid) * (num_nids - 1));
 908         }
 909
 910         rc = lustre_lnet_handle_peer_ip2nets((pnid) ? nid_array : nid,
 911                                              num_nids, mr, ip2nets,
 912                                              IOC_LIBCFS_ADD_PEER_NI, ADD_CMD,
 913                                              err_str);
 914         if (rc)
 915                 goto out;
 916
 917 out:
 918         if (nid_array)
 919                 free(nid_array);
 920
 921         cYAML_build_error(rc, seq_no, ADD_CMD, "peer_ni", err_str, err_rc);
 922         return rc;
 923 }
 924
 925 int lustre_lnet_del_peer_nid(char *pnid, char **nid, int num_nids,
 926                              bool ip2nets, int seq_no, struct cYAML **err_rc)
 927 {
 928         int rc = LUSTRE_CFG_RC_NO_ERR;
 929         char err_str[LNET_MAX_STR_LEN] = {0};
 930         char **nid_array = NULL;
 931
 932         snprintf(err_str, sizeof(err_str), "\"Success\"");
 933
 934         if (ip2nets) {
 935                 rc = lustre_lnet_handle_peer_ip2nets(nid, num_nids, false,
 936                                                 ip2nets, IOC_LIBCFS_DEL_PEER_NI,
 937                                                 DEL_CMD, err_str);
 938                 goto out;
 939         }
 940
 941         if (pnid == NULL) {
 942                 snprintf(err_str, sizeof(err_str),
 943                          "\"Primary nid is not provided\"");
 944                 rc = LUSTRE_CFG_RC_MISSING_PARAM;
 945                 goto out;
 946         } else if (!ip2nets) {
 947                 if (libcfs_str2nid(pnid) == LNET_NID_ANY) {
 948                         rc = LUSTRE_CFG_RC_BAD_PARAM;
 949                         snprintf(err_str, sizeof(err_str),
 950                                  "bad key NID: '%s'",
 951                                  pnid);
 952                         goto out;
 953                 }
 954         }
 955
 956         num_nids++;
 957         nid_array = calloc(sizeof(*nid_array), num_nids);
 958         if (!nid_array) {
 959                 snprintf(err_str, sizeof(err_str),
 960                                 "out of memory");
 961                 rc = LUSTRE_CFG_RC_OUT_OF_MEM;
 962                 goto out;
 963         }
 964         nid_array[0] = pnid;
 965         memcpy(&nid_array[1], nid, sizeof(*nid) * (num_nids - 1));
 966
 967         rc = lustre_lnet_handle_peer_ip2nets(nid_array, num_nids, false,
 968                                              ip2nets, IOC_LIBCFS_DEL_PEER_NI,
 969                                              DEL_CMD, err_str);
 970         if (rc)
 971                 goto out;
 972
 973 out:
 974         if (nid_array)
 975                 free(nid_array);
 976
 977         cYAML_build_error(rc, seq_no, DEL_CMD, "peer_ni", err_str, err_rc);
 978         return rc;
 979 }
 980
 981 int lustre_lnet_config_route(char *nw, char *gw, int hops, int prio,
 982                              int seq_no, struct cYAML **err_rc)
 983 {
 984         struct lnet_ioctl_config_data data;
 985         lnet_nid_t gateway_nid;
 986         int rc = LUSTRE_CFG_RC_NO_ERR;
 987         int ip_idx, i;
 988         __u32 rnet = LNET_NIDNET(LNET_NID_ANY);
 989         __u32 net = LNET_NIDNET(LNET_NID_ANY);
 990         char err_str[LNET_MAX_STR_LEN];
 991         __u32 ip_list[MAX_NUM_IPS];
 992         struct lustre_lnet_ip2nets ip2nets;
 993
 994         /* initialize all lists */
 995         INIT_LIST_HEAD(&ip2nets.ip2nets_ip_ranges);
 996         INIT_LIST_HEAD(&ip2nets.ip2nets_net.network_on_rule);
 997         INIT_LIST_HEAD(&ip2nets.ip2nets_net.nw_intflist);
 998
 999         snprintf(err_str, sizeof(err_str), "\"Success\"");
1000
1001         if (nw == NULL || gw == NULL) {
1002                 snprintf(err_str,
1003                          sizeof(err_str),
1004                          "\"missing mandatory parameter in route config:'%s'\"",
1005                          (nw == NULL && gw == NULL) ? "network, gateway" :
1006                          (nw == NULL) ? "network" : "gateway");
1007                 rc = LUSTRE_CFG_RC_MISSING_PARAM;
1008                 goto out;
1009         }
1010
1011         rnet = libcfs_str2net(nw);
1012         if (rnet == LNET_NIDNET(LNET_NID_ANY)) {
1013                 snprintf(err_str,
1014                          sizeof(err_str),
1015                          "\"cannot parse remote net %s\"", nw);
1016                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1017                 goto out;
1018         }
1019
1020         if (hops == -1) {
1021                 /* hops is undefined */
1022                 hops = LNET_UNDEFINED_HOPS;
1023         } else if (hops < 1 || hops > 255) {
1024                 snprintf(err_str,
1025                         sizeof(err_str),
1026                         "\"invalid hop count %d, must be between 1 and 255\"",
1027                         hops);
1028                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
1029                 goto out;
1030         }
1031
1032         if (prio == -1) {
1033                 prio = 0;
1034         } else if (prio < 0) {
1035                 snprintf(err_str,
1036                          sizeof(err_str),
1037                         "\"invalid priority %d, must be greater than 0\"",
1038                         prio);
1039                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
1040                 goto out;
1041         }
1042
1043         rc = lnet_expr2ips(gw, ip_list,
1044                            &ip2nets, &net, err_str);
1045         if (rc == LUSTRE_CFG_RC_LAST_ELEM)
1046                 rc = -1;
1047         else if (rc < LUSTRE_CFG_RC_NO_ERR)
1048                 goto out;
1049
1050         ip_idx = rc;
1051
1052         LIBCFS_IOC_INIT_V2(data, cfg_hdr);
1053         data.cfg_net = rnet;
1054         data.cfg_config_u.cfg_route.rtr_hop = hops;
1055         data.cfg_config_u.cfg_route.rtr_priority = prio;
1056
1057         for (i = MAX_NUM_IPS - 1; i > ip_idx; i--) {
1058                 gateway_nid = LNET_MKNID(net, ip_list[i]);
1059                 if (gateway_nid == LNET_NID_ANY) {
1060                         snprintf(err_str,
1061                                 LNET_MAX_STR_LEN,
1062                                 "\"cannot form gateway NID: %u\"",
1063                                 ip_list[i]);
1064                         err_str[LNET_MAX_STR_LEN - 1] = '\0';
1065                         rc = LUSTRE_CFG_RC_BAD_PARAM;
1066                         goto out;
1067                 }
1068                 data.cfg_nid = gateway_nid;
1069
1070                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_ADD_ROUTE, &data);
1071                 if (rc != 0) {
1072                         rc = -errno;
1073                         snprintf(err_str,
1074                                 sizeof(err_str),
1075                                 "\"cannot add route: %s\"", strerror(errno));
1076                         goto out;
1077                 }
1078         }
1079 out:
1080         cYAML_build_error(rc, seq_no, ADD_CMD, "route", err_str, err_rc);
1081
1082         return rc;
1083 }
1084
1085 int lustre_lnet_del_route(char *nw, char *gw,
1086                           int seq_no, struct cYAML **err_rc)
1087 {
1088         struct lnet_ioctl_config_data data;
1089         lnet_nid_t gateway_nid;
1090         int rc = LUSTRE_CFG_RC_NO_ERR;
1091         __u32 rnet = LNET_NIDNET(LNET_NID_ANY);
1092         __u32 net = LNET_NIDNET(LNET_NID_ANY);
1093         char err_str[LNET_MAX_STR_LEN];
1094         int ip_idx, i;
1095         __u32 ip_list[MAX_NUM_IPS];
1096         struct lustre_lnet_ip2nets ip2nets;
1097
1098         /* initialize all lists */
1099         INIT_LIST_HEAD(&ip2nets.ip2nets_ip_ranges);
1100         INIT_LIST_HEAD(&ip2nets.ip2nets_net.network_on_rule);
1101         INIT_LIST_HEAD(&ip2nets.ip2nets_net.nw_intflist);
1102
1103         snprintf(err_str, sizeof(err_str), "\"Success\"");
1104
1105         if (nw == NULL || gw == NULL) {
1106                 snprintf(err_str,
1107                          sizeof(err_str),
1108                          "\"missing mandatory parameter in route delete: '%s'\"",
1109                          (nw == NULL && gw == NULL) ? "network, gateway" :
1110                          (nw == NULL) ? "network" : "gateway");
1111                 rc = LUSTRE_CFG_RC_MISSING_PARAM;
1112                 goto out;
1113         }
1114
1115         rnet = libcfs_str2net(nw);
1116         if (rnet == LNET_NIDNET(LNET_NID_ANY)) {
1117                 snprintf(err_str,
1118                          sizeof(err_str),
1119                          "\"cannot parse remote net '%s'\"", nw);
1120                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1121                 goto out;
1122         }
1123
1124         rc = lnet_expr2ips(gw, ip_list,
1125                            &ip2nets, &net, err_str);
1126         if (rc == LUSTRE_CFG_RC_LAST_ELEM)
1127                 rc = -1;
1128         else if (rc < LUSTRE_CFG_RC_NO_ERR)
1129                 goto out;
1130
1131         ip_idx = rc;
1132
1133         LIBCFS_IOC_INIT_V2(data, cfg_hdr);
1134         data.cfg_net = rnet;
1135
1136         for (i = MAX_NUM_IPS - 1; i > ip_idx; i--) {
1137                 gateway_nid = LNET_MKNID(net, ip_list[i]);
1138                 if (gateway_nid == LNET_NID_ANY) {
1139                         snprintf(err_str,
1140                                 LNET_MAX_STR_LEN,
1141                                 "\"cannot form gateway NID: %u\"",
1142                                 ip_list[i]);
1143                         err_str[LNET_MAX_STR_LEN - 1] = '\0';
1144                         rc = LUSTRE_CFG_RC_BAD_PARAM;
1145                         goto out;
1146                 }
1147                 data.cfg_nid = gateway_nid;
1148
1149                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_DEL_ROUTE, &data);
1150                 if (rc != 0) {
1151                         rc = -errno;
1152                         snprintf(err_str,
1153                                 sizeof(err_str),
1154                                 "\"cannot delete route: %s\"", strerror(errno));
1155                         goto out;
1156                 }
1157         }
1158 out:
1159         cYAML_build_error(rc, seq_no, DEL_CMD, "route", err_str, err_rc);
1160
1161         return rc;
1162 }
1163
1164 int lustre_lnet_show_route(char *nw, char *gw, int hops, int prio, int detail,
1165                            int seq_no, struct cYAML **show_rc,
1166                            struct cYAML **err_rc, bool backup)
1167 {
1168         struct lnet_ioctl_config_data data;
1169         lnet_nid_t gateway_nid;
1170         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
1171         int l_errno = 0;
1172         __u32 net = LNET_NIDNET(LNET_NID_ANY);
1173         int i;
1174         struct cYAML *root = NULL, *route = NULL, *item = NULL;
1175         struct cYAML *first_seq = NULL;
1176         char err_str[LNET_MAX_STR_LEN];
1177         bool exist = false;
1178
1179         snprintf(err_str, sizeof(err_str),
1180                  "\"out of memory\"");
1181
1182         if (nw != NULL) {
1183                 net = libcfs_str2net(nw);
1184                 if (net == LNET_NIDNET(LNET_NID_ANY)) {
1185                         snprintf(err_str,
1186                                  sizeof(err_str),
1187                                  "\"cannot parse net '%s'\"", nw);
1188                         rc = LUSTRE_CFG_RC_BAD_PARAM;
1189                         goto out;
1190                 }
1191
1192         } else {
1193                 /* show all routes without filtering on net */
1194                 net = LNET_NIDNET(LNET_NID_ANY);
1195         }
1196
1197         if (gw != NULL) {
1198                 gateway_nid = libcfs_str2nid(gw);
1199                 if (gateway_nid == LNET_NID_ANY) {
1200                         snprintf(err_str,
1201                                  sizeof(err_str),
1202                                  "\"cannot parse gateway NID '%s'\"", gw);
1203                         rc = LUSTRE_CFG_RC_BAD_PARAM;
1204                         goto out;
1205                 }
1206         } else
1207                 /* show all routes with out filtering on gateway */
1208                 gateway_nid = LNET_NID_ANY;
1209
1210         if ((hops < 1 && hops != -1) || hops > 255) {
1211                 snprintf(err_str,
1212                          sizeof(err_str),
1213                          "\"invalid hop count %d, must be between 0 and 256\"",
1214                          hops);
1215                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
1216                 goto out;
1217         }
1218
1219         /* create struct cYAML root object */
1220         root = cYAML_create_object(NULL, NULL);
1221         if (root == NULL)
1222                 goto out;
1223
1224         route = cYAML_create_seq(root, "route");
1225         if (route == NULL)
1226                 goto out;
1227
1228         for (i = 0;; i++) {
1229                 LIBCFS_IOC_INIT_V2(data, cfg_hdr);
1230                 data.cfg_count = i;
1231
1232                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_ROUTE, &data);
1233                 if (rc != 0) {
1234                         l_errno = errno;
1235                         break;
1236                 }
1237
1238                 /* filter on provided data */
1239                 if (net != LNET_NIDNET(LNET_NID_ANY) &&
1240                     net != data.cfg_net)
1241                         continue;
1242
1243                 if (gateway_nid != LNET_NID_ANY &&
1244                     gateway_nid != data.cfg_nid)
1245                         continue;
1246
1247                 if (hops != -1 &&
1248                     hops != data.cfg_config_u.cfg_route.rtr_hop)
1249                         continue;
1250
1251                 if (prio != -1 &&
1252                     prio != data.cfg_config_u.cfg_route.rtr_priority)
1253                         continue;
1254
1255                 /* default rc to -1 incase we hit the goto */
1256                 rc = -1;
1257                 exist = true;
1258
1259                 item = cYAML_create_seq_item(route);
1260                 if (item == NULL)
1261                         goto out;
1262
1263                 if (first_seq == NULL)
1264                         first_seq = item;
1265
1266                 if (cYAML_create_string(item, "net",
1267                                         libcfs_net2str(data.cfg_net)) == NULL)
1268                         goto out;
1269
1270                 if (cYAML_create_string(item, "gateway",
1271                                         libcfs_nid2str(data.cfg_nid)) == NULL)
1272                         goto out;
1273
1274                 if (detail) {
1275                         if (cYAML_create_number(item, "hop",
1276                                                 (int) data.cfg_config_u.
1277                                                 cfg_route.rtr_hop) ==
1278                             NULL)
1279                                 goto out;
1280
1281                         if (cYAML_create_number(item, "priority",
1282                                                 data.cfg_config_u.
1283                                                 cfg_route.rtr_priority) == NULL)
1284                                 goto out;
1285
1286                         if (!backup &&
1287                             cYAML_create_string(item, "state",
1288                                                 data.cfg_config_u.cfg_route.
1289                                                         rtr_flags ?
1290                                                 "up" : "down") == NULL)
1291                                 goto out;
1292                 }
1293         }
1294
1295         /* print output iff show_rc is not provided */
1296         if (show_rc == NULL)
1297                 cYAML_print_tree(root);
1298
1299         if (l_errno != ENOENT) {
1300                 snprintf(err_str,
1301                          sizeof(err_str),
1302                          "\"cannot get routes: %s\"",
1303                          strerror(l_errno));
1304                 rc = -l_errno;
1305                 goto out;
1306         } else
1307                 rc = LUSTRE_CFG_RC_NO_ERR;
1308
1309         snprintf(err_str, sizeof(err_str), "\"success\"");
1310 out:
1311         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR || !exist) {
1312                 cYAML_free_tree(root);
1313         } else if (show_rc != NULL && *show_rc != NULL) {
1314                 struct cYAML *show_node;
1315                 /* find the route node, if one doesn't exist then
1316                  * insert one.  Otherwise add to the one there
1317                  */
1318                 show_node = cYAML_get_object_item(*show_rc, "route");
1319                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
1320                         cYAML_insert_child(show_node, first_seq);
1321                         free(route);
1322                         free(root);
1323                 } else if (show_node == NULL) {
1324                         cYAML_insert_sibling((*show_rc)->cy_child,
1325                                                 route);
1326                         free(root);
1327                 } else {
1328                         cYAML_free_tree(root);
1329                 }
1330         } else {
1331                 *show_rc = root;
1332         }
1333
1334         cYAML_build_error(rc, seq_no, SHOW_CMD, "route", err_str, err_rc);
1335
1336         return rc;
1337 }
1338
1339 static int socket_intf_query(int request, char *intf,
1340                              struct ifreq *ifr)
1341 {
1342         int rc = 0;
1343         int sockfd;
1344
1345         if (strlen(intf) >= IFNAMSIZ || ifr == NULL)
1346                 return LUSTRE_CFG_RC_BAD_PARAM;
1347
1348         sockfd = socket(AF_INET, SOCK_DGRAM, 0);
1349         if (sockfd < 0)
1350                 return LUSTRE_CFG_RC_BAD_PARAM;
1351
1352         strcpy(ifr->ifr_name, intf);
1353         rc = ioctl(sockfd, request, ifr);
1354         if (rc != 0)
1355                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1356
1357         close(sockfd);
1358
1359         return rc;
1360 }
1361
1362 static int lustre_lnet_queryip(struct lnet_dlc_intf_descr *intf, __u32 *ip)
1363 {
1364         struct ifreq ifr;
1365         int rc;
1366
1367         memset(&ifr, 0, sizeof(ifr));
1368         rc = socket_intf_query(SIOCGIFFLAGS, intf->intf_name, &ifr);
1369         if (rc != 0)
1370                 return LUSTRE_CFG_RC_BAD_PARAM;
1371
1372         if ((ifr.ifr_flags & IFF_UP) == 0)
1373                 return LUSTRE_CFG_RC_BAD_PARAM;
1374
1375         memset(&ifr, 0, sizeof(ifr));
1376         rc = socket_intf_query(SIOCGIFADDR, intf->intf_name, &ifr);
1377         if (rc != 0)
1378                 return LUSTRE_CFG_RC_BAD_PARAM;
1379
1380         *ip = ((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr.s_addr;
1381         *ip = bswap_32(*ip);
1382
1383         return LUSTRE_CFG_RC_NO_ERR;
1384 }
1385
1386 /*
1387  * for each interface in the array of interfaces find the IP address of
1388  * that interface, create its nid and add it to an array of NIDs.
1389  * Stop if any of the interfaces is down
1390  */
1391 static int lustre_lnet_intf2nids(struct lnet_dlc_network_descr *nw,
1392                                  lnet_nid_t **nids, __u32 *nnids,
1393                                  char *err_str, size_t str_len)
1394 {
1395         int i = 0, count = 0, rc;
1396         struct lnet_dlc_intf_descr *intf;
1397         char val[LNET_MAX_STR_LEN];
1398         __u32 ip;
1399         int gni_num;
1400         char *endp;
1401         unsigned int num;
1402
1403
1404         if (nw == NULL || nids == NULL) {
1405                 snprintf(err_str, str_len,
1406                          "\"unexpected parameters to lustre_lnet_intf2nids()\"");
1407                 err_str[str_len - 1] = '\0';
1408                 return LUSTRE_CFG_RC_BAD_PARAM;
1409         }
1410
1411         if (LNET_NETTYP(nw->nw_id) == GNILND) {
1412                 count = 1;
1413         } else {
1414                 list_for_each_entry(intf, &nw->nw_intflist, intf_on_network)
1415                         count++;
1416         }
1417
1418         *nids = calloc(count, sizeof(lnet_nid_t));
1419         if (*nids == NULL) {
1420                 snprintf(err_str, str_len,
1421                          "\"out of memory\"");
1422                 err_str[str_len - 1] = '\0';
1423                 return LUSTRE_CFG_RC_OUT_OF_MEM;
1424         }
1425         /*
1426          * special case the GNI interface since it doesn't have an IP
1427          * address. The assumption is that there can only be one GNI
1428          * interface in the system. No interface name is provided.
1429          */
1430         if (LNET_NETTYP(nw->nw_id) == GNILND) {
1431                 rc = read_sysfs_file(gni_nid_path, "nid", val,
1432                                 1, sizeof(val));
1433                 if (rc) {
1434                         snprintf(err_str, str_len,
1435                                  "\"cannot read gni nid\"");
1436                         err_str[str_len - 1] = '\0';
1437                         goto failed;
1438                 }
1439                 gni_num = atoi(val);
1440
1441                 (*nids)[i] = LNET_MKNID(nw->nw_id, gni_num);
1442
1443                 goto out;
1444         }
1445
1446         /* look at the other interfaces */
1447         list_for_each_entry(intf, &nw->nw_intflist, intf_on_network) {
1448                 if (LNET_NETTYP(nw->nw_id) == PTL4LND) {
1449                         /* handle LNDs with numeric interface name */
1450                         num = strtoul(intf->intf_name, &endp, 0);
1451                         if (endp == intf->intf_name || *endp != '\0') {
1452                                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1453                                 snprintf(err_str, str_len,
1454                                          "\"couldn't query intf %s\"",
1455                                          intf->intf_name);
1456                                 err_str[str_len - 1] = '\0';
1457                                 goto failed;
1458                         }
1459                         (*nids)[i] = LNET_MKNID(nw->nw_id, num);
1460                         i++;
1461                 } else {
1462                         /* handle LNDs with ip interface name */
1463                         rc = lustre_lnet_queryip(intf, &ip);
1464                         if (rc != LUSTRE_CFG_RC_NO_ERR) {
1465                                 snprintf(err_str, str_len,
1466                                          "\"couldn't query intf %s\"",
1467                                          intf->intf_name);
1468                                 err_str[str_len - 1] = '\0';
1469                                 goto failed;
1470                         }
1471                         (*nids)[i] = LNET_MKNID(nw->nw_id, ip);
1472                         i++;
1473                 }
1474         }
1475
1476 out:
1477         *nnids = count;
1478
1479         return 0;
1480
1481 failed:
1482         free(*nids);
1483         *nids = NULL;
1484         return rc;
1485 }
1486
1487 /*
1488  * called repeatedly until a match or no more ip range
1489  * What do you have?
1490  *      ip_range expression
1491  *      interface list with all the interface names.
1492  *      all the interfaces in the system.
1493  *
1494  *      try to match the ip_range expr to one of the interfaces' IPs in
1495  *      the system. If we hit a patch for an interface. Check if that
1496  *      interface name is in the list.
1497  *
1498  *      If there are more than one interface in the list, then make sure
1499  *      that the IPs for all of these interfaces match the ip ranges
1500  *      given.
1501  *
1502  *      for each interface in intf_list
1503  *              look up the intf name in ifa
1504  *              if not there then no match
1505  *              check ip obtained from ifa against a match to any of the
1506  *              ip_ranges given.
1507  *              If no match, then fail
1508  *
1509  *      The result is that all the interfaces have to match.
1510  */
1511 int lustre_lnet_match_ip_to_intf(struct ifaddrs *ifa,
1512                                  struct list_head *intf_list,
1513                                  struct list_head *ip_ranges)
1514 {
1515         int rc;
1516         __u32 ip;
1517         struct lnet_dlc_intf_descr *intf_descr, *tmp;
1518         struct ifaddrs *ifaddr = ifa;
1519         struct lustre_lnet_ip_range_descr *ip_range;
1520         int family;
1521
1522         /*
1523          * if there are no explicit interfaces, and no ip ranges, then
1524          * configure the first tcp interface we encounter.
1525          */
1526         if (list_empty(intf_list) && list_empty(ip_ranges)) {
1527                 for (ifaddr = ifa; ifaddr != NULL; ifaddr = ifaddr->ifa_next) {
1528                         if (ifaddr->ifa_addr == NULL)
1529                                 continue;
1530
1531                         if ((ifaddr->ifa_flags & IFF_UP) == 0)
1532                                 continue;
1533
1534                         family = ifaddr->ifa_addr->sa_family;
1535                         if (family == AF_INET &&
1536                             strcmp(ifaddr->ifa_name, "lo") != 0) {
1537                                 rc = lustre_lnet_add_intf_descr
1538                                         (intf_list, ifaddr->ifa_name,
1539                                         strlen(ifaddr->ifa_name));
1540
1541                                 if (rc != LUSTRE_CFG_RC_NO_ERR)
1542                                         return rc;
1543
1544                                 return LUSTRE_CFG_RC_MATCH;
1545                         }
1546                 }
1547                 return LUSTRE_CFG_RC_NO_MATCH;
1548         }
1549
1550         /*
1551          * First interface which matches an IP pattern will be used
1552          */
1553         if (list_empty(intf_list)) {
1554                 /*
1555                  * no interfaces provided in the rule, but an ip range is
1556                  * provided, so try and match an interface to the ip
1557                  * range.
1558                  */
1559                 for (ifaddr = ifa; ifaddr != NULL; ifaddr = ifaddr->ifa_next) {
1560                         if (ifaddr->ifa_addr == NULL)
1561                                 continue;
1562
1563                         if ((ifaddr->ifa_flags & IFF_UP) == 0)
1564                                 continue;
1565
1566                         family = ifaddr->ifa_addr->sa_family;
1567                         if (family == AF_INET) {
1568                                 ip = ((struct sockaddr_in *)ifaddr->ifa_addr)->
1569                                         sin_addr.s_addr;
1570
1571                                 list_for_each_entry(ip_range, ip_ranges,
1572                                                     ipr_entry) {
1573                                         rc = cfs_ip_addr_match(bswap_32(ip),
1574                                                         &ip_range->ipr_expr);
1575                                         if (!rc)
1576                                                 continue;
1577
1578                                         rc = lustre_lnet_add_intf_descr
1579                                           (intf_list, ifaddr->ifa_name,
1580                                            strlen(ifaddr->ifa_name));
1581
1582                                         if (rc != LUSTRE_CFG_RC_NO_ERR)
1583                                                 return rc;
1584                                 }
1585                         }
1586                 }
1587
1588                 if (!list_empty(intf_list))
1589                         return LUSTRE_CFG_RC_MATCH;
1590
1591                 return LUSTRE_CFG_RC_NO_MATCH;
1592         }
1593
1594         /*
1595          * If an interface is explicitly specified the ip-range might or
1596          * might not be specified. if specified the interface needs to match the
1597          * ip-range. If no ip-range then the interfaces are
1598          * automatically matched if they are all up.
1599          * If > 1 interfaces all the interfaces must match for the NI to
1600          * be configured.
1601          */
1602         list_for_each_entry_safe(intf_descr, tmp, intf_list, intf_on_network) {
1603                 for (ifaddr = ifa; ifaddr != NULL; ifaddr = ifaddr->ifa_next) {
1604                         if (ifaddr->ifa_addr == NULL)
1605                                 continue;
1606
1607                         family = ifaddr->ifa_addr->sa_family;
1608                         if (family == AF_INET &&
1609                             strcmp(intf_descr->intf_name,
1610                                    ifaddr->ifa_name) == 0)
1611                                 break;
1612                 }
1613
1614                 if (ifaddr == NULL) {
1615                         list_del(&intf_descr->intf_on_network);
1616                         free_intf_descr(intf_descr);
1617                         continue;
1618                 }
1619
1620                 if ((ifaddr->ifa_flags & IFF_UP) == 0) {
1621                         list_del(&intf_descr->intf_on_network);
1622                         free_intf_descr(intf_descr);
1623                         continue;
1624                 }
1625
1626                 ip = ((struct sockaddr_in *)ifaddr->ifa_addr)->sin_addr.s_addr;
1627
1628                 rc = 1;
1629                 list_for_each_entry(ip_range, ip_ranges, ipr_entry) {
1630                         rc = cfs_ip_addr_match(bswap_32(ip), &ip_range->ipr_expr);
1631                         if (rc)
1632                                 break;
1633                 }
1634
1635                 if (!rc) {
1636                         /* no match for this interface */
1637                         list_del(&intf_descr->intf_on_network);
1638                         free_intf_descr(intf_descr);
1639                 }
1640         }
1641
1642         return LUSTRE_CFG_RC_MATCH;
1643 }
1644
1645 static int lustre_lnet_resolve_ip2nets_rule(struct lustre_lnet_ip2nets *ip2nets,
1646                                             lnet_nid_t **nids, __u32 *nnids,
1647                                             char *err_str, size_t str_len)
1648 {
1649         struct ifaddrs *ifa;
1650         int rc = LUSTRE_CFG_RC_NO_ERR;
1651
1652         rc = getifaddrs(&ifa);
1653         if (rc < 0) {
1654                 snprintf(err_str, str_len,
1655                          "\"failed to get interface addresses: %d\"", -errno);
1656                 err_str[str_len - 1] = '\0';
1657                 return -errno;
1658         }
1659
1660         rc = lustre_lnet_match_ip_to_intf(ifa,
1661                                           &ip2nets->ip2nets_net.nw_intflist,
1662                                           &ip2nets->ip2nets_ip_ranges);
1663         if (rc != LUSTRE_CFG_RC_MATCH) {
1664                 snprintf(err_str, str_len,
1665                          "\"couldn't match ip to existing interfaces\"");
1666                 err_str[str_len - 1] = '\0';
1667                 freeifaddrs(ifa);
1668                 return rc;
1669         }
1670
1671         rc = lustre_lnet_intf2nids(&ip2nets->ip2nets_net, nids, nnids,
1672                                    err_str, sizeof(err_str));
1673         if (rc != LUSTRE_CFG_RC_NO_ERR) {
1674                 *nids = NULL;
1675                 *nnids = 0;
1676         }
1677
1678         freeifaddrs(ifa);
1679
1680         return rc;
1681 }
1682
1683 static int
1684 lustre_lnet_ioctl_config_ni(struct list_head *intf_list,
1685                             struct lnet_ioctl_config_lnd_tunables *tunables,
1686                             struct cfs_expr_list *global_cpts,
1687                             lnet_nid_t *nids, char *err_str)
1688 {
1689         char *data;
1690         struct lnet_ioctl_config_ni *conf;
1691         struct lnet_ioctl_config_lnd_tunables *tun = NULL;
1692         int rc = LUSTRE_CFG_RC_NO_ERR, i = 0;
1693         size_t len;
1694         int count;
1695         struct lnet_dlc_intf_descr *intf_descr;
1696         __u32 *cpt_array;
1697         struct cfs_expr_list *cpt_expr;
1698
1699         list_for_each_entry(intf_descr, intf_list,
1700                             intf_on_network) {
1701                 if (tunables != NULL)
1702                         len = sizeof(struct lnet_ioctl_config_ni) +
1703                               sizeof(struct lnet_ioctl_config_lnd_tunables);
1704                 else
1705                         len = sizeof(struct lnet_ioctl_config_ni);
1706
1707                 data = calloc(1, len);
1708                 if (!data)
1709                         return LUSTRE_CFG_RC_OUT_OF_MEM;
1710                 conf = (struct lnet_ioctl_config_ni*) data;
1711                 if (tunables != NULL)
1712                         tun = (struct lnet_ioctl_config_lnd_tunables*)
1713                                 conf->lic_bulk;
1714
1715                 LIBCFS_IOC_INIT_V2(*conf, lic_cfg_hdr);
1716                 conf->lic_cfg_hdr.ioc_len = len;
1717                 conf->lic_nid = nids[i];
1718                 strncpy(conf->lic_ni_intf[0], intf_descr->intf_name,
1719                         LNET_MAX_STR_LEN);
1720
1721                 if (intf_descr->cpt_expr != NULL)
1722                         cpt_expr = intf_descr->cpt_expr;
1723                 else if (global_cpts != NULL)
1724                         cpt_expr = global_cpts;
1725                 else
1726                         cpt_expr = NULL;
1727
1728                 if (cpt_expr != NULL) {
1729                         count = cfs_expr_list_values(cpt_expr,
1730                                                      LNET_MAX_SHOW_NUM_CPT,
1731                                                      &cpt_array);
1732                         if (count > 0) {
1733                                 memcpy(conf->lic_cpts, cpt_array,
1734                                        sizeof(cpt_array[0]) * LNET_MAX_STR_LEN);
1735                                 free(cpt_array);
1736                         } else {
1737                                 count = 0;
1738                         }
1739                 } else {
1740                         count = 0;
1741                 }
1742
1743                 conf->lic_ncpts = count;
1744
1745                 if (tunables != NULL)
1746                         memcpy(tun, tunables, sizeof(*tunables));
1747
1748                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_ADD_LOCAL_NI, data);
1749                 if (rc < 0) {
1750                         rc = -errno;
1751                         snprintf(err_str,
1752                                  LNET_MAX_STR_LEN,
1753                                  "\"cannot add network: %s\"", strerror(errno));
1754                         free(data);
1755                         return rc;
1756                 }
1757                 free(data);
1758                 i++;
1759         }
1760
1761         return LUSTRE_CFG_RC_NO_ERR;
1762 }
1763
1764 int
1765 lustre_lnet_config_ip2nets(struct lustre_lnet_ip2nets *ip2nets,
1766                            struct lnet_ioctl_config_lnd_tunables *tunables,
1767                            struct cfs_expr_list *global_cpts,
1768                            int seq_no, struct cYAML **err_rc)
1769 {
1770         lnet_nid_t *nids = NULL;
1771         __u32 nnids = 0;
1772         int rc;
1773         char err_str[LNET_MAX_STR_LEN];
1774
1775         snprintf(err_str, sizeof(err_str), "\"success\"");
1776
1777         if (!ip2nets) {
1778                 snprintf(err_str,
1779                          sizeof(err_str),
1780                          "\"incomplete ip2nets information\"");
1781                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1782                 goto out;
1783         }
1784
1785         /*
1786          * call below function to resolve the rules into a list of nids.
1787          * The memory is allocated in that function then freed here when
1788          * it's no longer needed.
1789          */
1790         rc = lustre_lnet_resolve_ip2nets_rule(ip2nets, &nids, &nnids, err_str,
1791                                               sizeof(err_str));
1792         if (rc != LUSTRE_CFG_RC_NO_ERR && rc != LUSTRE_CFG_RC_MATCH)
1793                 goto out;
1794
1795         if (list_empty(&ip2nets->ip2nets_net.nw_intflist)) {
1796                 snprintf(err_str, sizeof(err_str),
1797                          "\"no interfaces match ip2nets rules\"");
1798                 goto free_nids_out;
1799         }
1800
1801         rc = lustre_lnet_ioctl_config_ni(&ip2nets->ip2nets_net.nw_intflist,
1802                                          tunables, global_cpts, nids,
1803                                          err_str);
1804
1805 free_nids_out:
1806         free(nids);
1807
1808 out:
1809         cYAML_build_error(rc, seq_no, ADD_CMD, "ip2nets", err_str, err_rc);
1810         return rc;
1811 }
1812
1813 int lustre_lnet_config_ni(struct lnet_dlc_network_descr *nw_descr,
1814                           struct cfs_expr_list *global_cpts,
1815                           char *ip2net,
1816                           struct lnet_ioctl_config_lnd_tunables *tunables,
1817                           int seq_no, struct cYAML **err_rc)
1818 {
1819         char *data = NULL;
1820         struct lnet_ioctl_config_ni *conf;
1821         struct lnet_ioctl_config_lnd_tunables *tun = NULL;
1822         char buf[LNET_MAX_STR_LEN];
1823         int rc = LUSTRE_CFG_RC_NO_ERR;
1824         char err_str[LNET_MAX_STR_LEN];
1825         lnet_nid_t *nids = NULL;
1826         __u32 nnids = 0;
1827         size_t len;
1828         int count;
1829         struct lnet_dlc_intf_descr *intf_descr, *tmp;
1830         __u32 *cpt_array;
1831
1832         snprintf(err_str, sizeof(err_str), "\"success\"");
1833
1834         if (ip2net == NULL && (nw_descr == NULL || nw_descr->nw_id == 0 ||
1835             (list_empty(&nw_descr->nw_intflist) &&
1836              LNET_NETTYP(nw_descr->nw_id) != GNILND))) {
1837                 snprintf(err_str,
1838                          sizeof(err_str),
1839                          "\"missing mandatory parameters in NI config: '%s'\"",
1840                          (nw_descr == NULL) ? "network , interface" :
1841                          (nw_descr->nw_id == 0) ? "network" : "interface");
1842                 rc = LUSTRE_CFG_RC_MISSING_PARAM;
1843                 goto out;
1844         }
1845
1846         if (ip2net != NULL && strlen(ip2net) >= sizeof(buf)) {
1847                 snprintf(err_str,
1848                          sizeof(err_str),
1849                          "\"ip2net string too long %d\"",
1850                                 (int)strlen(ip2net));
1851                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
1852                 goto out;
1853         }
1854
1855         if (ip2net != NULL) {
1856                 if (tunables != NULL)
1857                         len = sizeof(struct lnet_ioctl_config_ni) +
1858                               sizeof(struct lnet_ioctl_config_lnd_tunables);
1859                 else
1860                         len = sizeof(struct lnet_ioctl_config_ni);
1861                 data = calloc(1, len);
1862                 if (!data) {
1863                         rc = LUSTRE_CFG_RC_OUT_OF_MEM;
1864                         goto out;
1865                 }
1866                 conf = (struct lnet_ioctl_config_ni*) data;
1867                 if (tunables != NULL)
1868                         tun = (struct lnet_ioctl_config_lnd_tunables*)
1869                                 (data + sizeof(*conf));
1870
1871                 LIBCFS_IOC_INIT_V2(*conf, lic_cfg_hdr);
1872                 conf->lic_cfg_hdr.ioc_len = len;
1873                 strncpy(conf->lic_legacy_ip2nets, ip2net,
1874                         LNET_MAX_STR_LEN);
1875
1876                 if (global_cpts != NULL) {
1877                         count = cfs_expr_list_values(global_cpts,
1878                                                      LNET_MAX_SHOW_NUM_CPT,
1879                                                      &cpt_array);
1880                         if (count > 0) {
1881                                 memcpy(conf->lic_cpts, cpt_array,
1882                                        sizeof(cpt_array[0]) * LNET_MAX_STR_LEN);
1883                                 free(cpt_array);
1884                         } else {
1885                                 count = 0;
1886                         }
1887                 } else {
1888                         count = 0;
1889                 }
1890
1891                 conf->lic_ncpts = count;
1892
1893                 if (tunables != NULL)
1894                         memcpy(tun, tunables, sizeof(*tunables));
1895
1896                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_ADD_LOCAL_NI, data);
1897                 if (rc < 0) {
1898                         rc = -errno;
1899                         snprintf(err_str,
1900                                 sizeof(err_str),
1901                                 "\"cannot add network: %s\"", strerror(errno));
1902                         goto out;
1903                 }
1904
1905                 goto out;
1906         }
1907
1908         if (LNET_NETTYP(nw_descr->nw_id) == LOLND) {
1909                 rc = LUSTRE_CFG_RC_NO_ERR;
1910                 goto out;
1911         }
1912
1913         if (nw_descr->nw_id == LNET_NIDNET(LNET_NID_ANY)) {
1914                 snprintf(err_str,
1915                         sizeof(err_str),
1916                         "\"cannot parse net '%s'\"",
1917                         libcfs_net2str(nw_descr->nw_id));
1918                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1919                 goto out;
1920         }
1921
1922         /*
1923          * special case the GNI since no interface name is expected
1924          */
1925         if (list_empty(&nw_descr->nw_intflist) &&
1926             (LNET_NETTYP(nw_descr->nw_id) != GNILND)) {
1927                 snprintf(err_str,
1928                         sizeof(err_str),
1929                         "\"no interface name provided\"");
1930                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1931                 goto out;
1932         }
1933
1934         rc = lustre_lnet_intf2nids(nw_descr, &nids, &nnids,
1935                                    err_str, sizeof(err_str));
1936         if (rc != 0) {
1937                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1938                 goto out;
1939         }
1940
1941         rc = lustre_lnet_ioctl_config_ni(&nw_descr->nw_intflist,
1942                                          tunables, global_cpts, nids,
1943                                          err_str);
1944
1945 out:
1946         if (nw_descr != NULL) {
1947                 list_for_each_entry_safe(intf_descr, tmp,
1948                                          &nw_descr->nw_intflist,
1949                                          intf_on_network) {
1950                         list_del(&intf_descr->intf_on_network);
1951                         free_intf_descr(intf_descr);
1952                 }
1953         }
1954
1955         cYAML_build_error(rc, seq_no, ADD_CMD, "net", err_str, err_rc);
1956
1957         if (nids)
1958                 free(nids);
1959
1960         if (data)
1961                 free(data);
1962
1963         return rc;
1964 }
1965
1966 int lustre_lnet_del_ni(struct lnet_dlc_network_descr *nw_descr,
1967                        int seq_no, struct cYAML **err_rc)
1968 {
1969         struct lnet_ioctl_config_ni data;
1970         int rc = LUSTRE_CFG_RC_NO_ERR, i;
1971         char err_str[LNET_MAX_STR_LEN];
1972         lnet_nid_t *nids = NULL;
1973         __u32 nnids = 0;
1974         struct lnet_dlc_intf_descr *intf_descr, *tmp;
1975
1976         snprintf(err_str, sizeof(err_str), "\"success\"");
1977
1978         if (nw_descr == NULL || nw_descr->nw_id == 0) {
1979                 snprintf(err_str,
1980                          sizeof(err_str),
1981                          "\"missing mandatory parameter in deleting NI: '%s'\"",
1982                          (nw_descr == NULL) ? "network , interface" :
1983                          (nw_descr->nw_id == 0) ? "network" : "interface");
1984                 rc = LUSTRE_CFG_RC_MISSING_PARAM;
1985                 goto out;
1986         }
1987
1988         if (LNET_NETTYP(nw_descr->nw_id) == LOLND)
1989                 return LUSTRE_CFG_RC_NO_ERR;
1990
1991         if (nw_descr->nw_id == LNET_NIDNET(LNET_NID_ANY)) {
1992                 snprintf(err_str,
1993                          sizeof(err_str),
1994                          "\"cannot parse net '%s'\"",
1995                          libcfs_net2str(nw_descr->nw_id));
1996                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1997                 goto out;
1998         }
1999
2000         rc = lustre_lnet_intf2nids(nw_descr, &nids, &nnids,
2001                                    err_str, sizeof(err_str));
2002         if (rc != 0) {
2003                 rc = LUSTRE_CFG_RC_BAD_PARAM;
2004                 goto out;
2005         }
2006
2007         /*
2008          * no interfaces just the nw_id is specified
2009          */
2010         if (nnids == 0) {
2011                 nids = calloc(1, sizeof(*nids));
2012                 if (nids == NULL) {
2013                         snprintf(err_str, sizeof(err_str),
2014                                 "\"out of memory\"");
2015                         rc = LUSTRE_CFG_RC_OUT_OF_MEM;
2016                         goto out;
2017                 }
2018                 nids[0] = LNET_MKNID(nw_descr->nw_id, 0);
2019                 nnids = 1;
2020         }
2021
2022         for (i = 0; i < nnids; i++) {
2023                 LIBCFS_IOC_INIT_V2(data, lic_cfg_hdr);
2024                 data.lic_nid = nids[i];
2025
2026                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_DEL_LOCAL_NI, &data);
2027                 if (rc < 0) {
2028                         rc = -errno;
2029                         snprintf(err_str,
2030                                 sizeof(err_str),
2031                                 "\"cannot del network: %s\"", strerror(errno));
2032                 }
2033         }
2034
2035         list_for_each_entry_safe(intf_descr, tmp, &nw_descr->nw_intflist,
2036                                  intf_on_network) {
2037                 list_del(&intf_descr->intf_on_network);
2038                 free_intf_descr(intf_descr);
2039         }
2040
2041 out:
2042         cYAML_build_error(rc, seq_no, DEL_CMD, "net", err_str, err_rc);
2043
2044         if (nids != NULL)
2045                 free(nids);
2046
2047         return rc;
2048 }
2049
2050 static int
2051 lustre_lnet_config_healthv(int value, bool all, lnet_nid_t nid,
2052                            enum lnet_health_type type, char *name,
2053                            int seq_no, struct cYAML **err_rc)
2054 {
2055         struct lnet_ioctl_reset_health_cfg data;
2056         int rc = LUSTRE_CFG_RC_NO_ERR;
2057         char err_str[LNET_MAX_STR_LEN];
2058
2059         snprintf(err_str, sizeof(err_str), "\"success\"");
2060
2061         LIBCFS_IOC_INIT_V2(data, rh_hdr);
2062         data.rh_type = type;
2063         data.rh_all = all;
2064         data.rh_value = value;
2065         data.rh_nid = nid;
2066
2067         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_SET_HEALHV, &data);
2068         if (rc != 0) {
2069                 rc = -errno;
2070                 snprintf(err_str,
2071                          sizeof(err_str), "Can not configure health value: %s",
2072                          strerror(errno));
2073         }
2074
2075         cYAML_build_error(rc, seq_no, ADD_CMD, name, err_str, err_rc);
2076
2077         return rc;
2078 }
2079
2080 int lustre_lnet_config_ni_healthv(int value, bool all, char *ni_nid, int seq_no,
2081                                   struct cYAML **err_rc)
2082 {
2083         lnet_nid_t nid;
2084         if (ni_nid)
2085                 nid = libcfs_str2nid(ni_nid);
2086         else
2087                 nid = LNET_NID_ANY;
2088         return lustre_lnet_config_healthv(value, all, nid,
2089                                           LNET_HEALTH_TYPE_LOCAL_NI,
2090                                           "ni healthv", seq_no, err_rc);
2091 }
2092
2093 int lustre_lnet_config_peer_ni_healthv(int value, bool all, char *lpni_nid,
2094                                        int seq_no, struct cYAML **err_rc)
2095 {
2096         lnet_nid_t nid;
2097         if (lpni_nid)
2098                 nid = libcfs_str2nid(lpni_nid);
2099         else
2100                 nid = LNET_NID_ANY;
2101         return lustre_lnet_config_healthv(value, all, nid,
2102                                           LNET_HEALTH_TYPE_PEER_NI,
2103                                           "peer_ni healthv", seq_no, err_rc);
2104 }
2105
2106 static bool
2107 add_msg_stats_to_yaml_blk(struct cYAML *yaml,
2108                           struct lnet_ioctl_comm_count *counts)
2109 {
2110         if (cYAML_create_number(yaml, "put",
2111                                 counts->ico_put_count)
2112                                         == NULL)
2113                 return false;
2114         if (cYAML_create_number(yaml, "get",
2115                                 counts->ico_get_count)
2116                                         == NULL)
2117                 return false;
2118         if (cYAML_create_number(yaml, "reply",
2119                                 counts->ico_reply_count)
2120                                         == NULL)
2121                 return false;
2122         if (cYAML_create_number(yaml, "ack",
2123                                 counts->ico_ack_count)
2124                                         == NULL)
2125                 return false;
2126         if (cYAML_create_number(yaml, "hello",
2127                                 counts->ico_hello_count)
2128                                         == NULL)
2129                 return false;
2130
2131         return true;
2132 }
2133
2134 static struct lnet_ioctl_comm_count *
2135 get_counts(struct lnet_ioctl_element_msg_stats *msg_stats, int idx)
2136 {
2137         if (idx == 0)
2138                 return &msg_stats->im_send_stats;
2139         if (idx == 1)
2140                 return &msg_stats->im_recv_stats;
2141         if (idx == 2)
2142                 return &msg_stats->im_drop_stats;
2143
2144         return NULL;
2145 }
2146
2147 int lustre_lnet_show_net(char *nw, int detail, int seq_no,
2148                          struct cYAML **show_rc, struct cYAML **err_rc,
2149                          bool backup)
2150 {
2151         char *buf;
2152         struct lnet_ioctl_config_ni *ni_data;
2153         struct lnet_ioctl_config_lnd_tunables *lnd;
2154         struct lnet_ioctl_element_stats *stats;
2155         struct lnet_ioctl_element_msg_stats msg_stats;
2156         struct lnet_ioctl_local_ni_hstats hstats;
2157         __u32 net = LNET_NIDNET(LNET_NID_ANY);
2158         __u32 prev_net = LNET_NIDNET(LNET_NID_ANY);
2159         int rc = LUSTRE_CFG_RC_OUT_OF_MEM, i, j;
2160         int l_errno = 0;
2161         struct cYAML *root = NULL, *tunables = NULL,
2162                 *net_node = NULL, *interfaces = NULL,
2163                 *item = NULL, *first_seq = NULL,
2164                 *tmp = NULL, *statistics = NULL,
2165                 *yhstats = NULL;
2166         int str_buf_len = LNET_MAX_SHOW_NUM_CPT * 2;
2167         char str_buf[str_buf_len];
2168         char *pos;
2169         char err_str[LNET_MAX_STR_LEN];
2170         bool exist = false, new_net = true;
2171         int net_num = 0;
2172         size_t buf_size = sizeof(*ni_data) + sizeof(*lnd) + sizeof(*stats);
2173
2174         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
2175
2176         buf = calloc(1, buf_size);
2177         if (buf == NULL)
2178                 goto out;
2179
2180         ni_data = (struct lnet_ioctl_config_ni *)buf;
2181
2182         if (nw != NULL) {
2183                 net = libcfs_str2net(nw);
2184                 if (net == LNET_NIDNET(LNET_NID_ANY)) {
2185                         snprintf(err_str,
2186                                  sizeof(err_str),
2187                                  "\"cannot parse net '%s'\"", nw);
2188                         rc = LUSTRE_CFG_RC_BAD_PARAM;
2189                         goto out;
2190                 }
2191         }
2192
2193         root = cYAML_create_object(NULL, NULL);
2194         if (root == NULL)
2195                 goto out;
2196
2197         net_node = cYAML_create_seq(root, "net");
2198         if (net_node == NULL)
2199                 goto out;
2200
2201         for (i = 0;; i++) {
2202                 pos = str_buf;
2203                 __u32 rc_net;
2204
2205                 memset(buf, 0, buf_size);
2206
2207                 LIBCFS_IOC_INIT_V2(*ni_data, lic_cfg_hdr);
2208                 /*
2209                  * set the ioc_len to the proper value since INIT assumes
2210                  * size of data
2211                  */
2212                 ni_data->lic_cfg_hdr.ioc_len = buf_size;
2213                 ni_data->lic_idx = i;
2214
2215                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_LOCAL_NI, ni_data);
2216                 if (rc != 0) {
2217                         l_errno = errno;
2218                         break;
2219                 }
2220
2221                 rc_net = LNET_NIDNET(ni_data->lic_nid);
2222
2223                 /* filter on provided data */
2224                 if (net != LNET_NIDNET(LNET_NID_ANY) &&
2225                     net != rc_net)
2226                         continue;
2227
2228                 /* if we're backing up don't store lo */
2229                 if (backup && LNET_NETTYP(rc_net) == LOLND)
2230                         continue;
2231
2232                 /* default rc to -1 in case we hit the goto */
2233                 rc = -1;
2234                 exist = true;
2235
2236                 stats = (struct lnet_ioctl_element_stats *)ni_data->lic_bulk;
2237                 lnd = (struct lnet_ioctl_config_lnd_tunables *)
2238                         (ni_data->lic_bulk + sizeof(*stats));
2239
2240                 if (rc_net != prev_net) {
2241                         prev_net = rc_net;
2242                         new_net = true;
2243                         net_num++;
2244                 }
2245
2246                 if (new_net) {
2247                         if (!cYAML_create_string(net_node, "net type",
2248                                                  libcfs_net2str(rc_net)))
2249                                 goto out;
2250
2251                         tmp = cYAML_create_seq(net_node, "local NI(s)");
2252                         if (tmp == NULL)
2253                                 goto out;
2254                         new_net = false;
2255                 }
2256
2257                 /* create the tree to be printed. */
2258                 item = cYAML_create_seq_item(tmp);
2259                 if (item == NULL)
2260                         goto out;
2261
2262                 if (first_seq == NULL)
2263                         first_seq = item;
2264
2265                 if (!backup &&
2266                     cYAML_create_string(item, "nid",
2267                                         libcfs_nid2str(ni_data->lic_nid)) == NULL)
2268                         goto out;
2269
2270                 if (!backup &&
2271                     cYAML_create_string(item,
2272                                         "status",
2273                                         (ni_data->lic_status ==
2274                                           LNET_NI_STATUS_UP) ?
2275                                             "up" : "down") == NULL)
2276                         goto out;
2277
2278                 /* don't add interfaces unless there is at least one
2279                  * interface */
2280                 if (strlen(ni_data->lic_ni_intf[0]) > 0) {
2281                         interfaces = cYAML_create_object(item, "interfaces");
2282                         if (interfaces == NULL)
2283                                 goto out;
2284
2285                         for (j = 0; j < LNET_INTERFACES_NUM; j++) {
2286                                 if (strlen(ni_data->lic_ni_intf[j]) > 0) {
2287                                         snprintf(str_buf,
2288                                                  sizeof(str_buf), "%d", j);
2289                                         if (cYAML_create_string(interfaces,
2290                                                 str_buf,
2291                                                 ni_data->lic_ni_intf[j]) ==
2292                                                         NULL)
2293                                                 goto out;
2294                                 }
2295                         }
2296                 }
2297
2298                 if (detail) {
2299                         char *limit;
2300                         int k;
2301
2302                         if (backup)
2303                                 goto continue_without_msg_stats;
2304
2305                         statistics = cYAML_create_object(item, "statistics");
2306                         if (statistics == NULL)
2307                                 goto out;
2308
2309                         if (cYAML_create_number(statistics, "send_count",
2310                                                 stats->iel_send_count)
2311                                                         == NULL)
2312                                 goto out;
2313
2314                         if (cYAML_create_number(statistics, "recv_count",
2315                                                 stats->iel_recv_count)
2316                                                         == NULL)
2317                                 goto out;
2318
2319                         if (cYAML_create_number(statistics, "drop_count",
2320                                                 stats->iel_drop_count)
2321                                                         == NULL)
2322                                 goto out;
2323
2324                         if (detail < 2)
2325                                 goto continue_without_msg_stats;
2326
2327                         LIBCFS_IOC_INIT_V2(msg_stats, im_hdr);
2328                         msg_stats.im_hdr.ioc_len = sizeof(msg_stats);
2329                         msg_stats.im_idx = i;
2330
2331                         rc = l_ioctl(LNET_DEV_ID,
2332                                      IOC_LIBCFS_GET_LOCAL_NI_MSG_STATS,
2333                                      &msg_stats);
2334                         if (rc != 0) {
2335                                 l_errno = errno;
2336                                 goto continue_without_msg_stats;
2337                         }
2338
2339                         for (k = 0; k < 3; k++) {
2340                                 struct lnet_ioctl_comm_count *counts;
2341                                 struct cYAML *msg_statistics = NULL;
2342
2343                                 msg_statistics = cYAML_create_object(item,
2344                                                  (char *)gmsg_stat_names[k]);
2345                                 if (msg_statistics == NULL)
2346                                         goto out;
2347
2348                                 counts = get_counts(&msg_stats, k);
2349                                 if (counts == NULL)
2350                                         goto out;
2351
2352                                 if (!add_msg_stats_to_yaml_blk(msg_statistics,
2353                                                                counts))
2354                                         goto out;
2355                         }
2356
2357                         LIBCFS_IOC_INIT_V2(hstats, hlni_hdr);
2358                         hstats.hlni_nid = ni_data->lic_nid;
2359                         /* grab health stats */
2360                         rc = l_ioctl(LNET_DEV_ID,
2361                                      IOC_LIBCFS_GET_LOCAL_HSTATS,
2362                                      &hstats);
2363                         if (rc != 0) {
2364                                 l_errno = errno;
2365                                 goto continue_without_msg_stats;
2366                         }
2367                         yhstats = cYAML_create_object(item, "health stats");
2368                         if (!yhstats)
2369                                 goto out;
2370                         if (cYAML_create_number(yhstats, "health value",
2371                                                 hstats.hlni_health_value)
2372                                                         == NULL)
2373                                 goto out;
2374                         if (cYAML_create_number(yhstats, "interrupts",
2375                                                 hstats.hlni_local_interrupt)
2376                                                         == NULL)
2377                                 goto out;
2378                         if (cYAML_create_number(yhstats, "dropped",
2379                                                 hstats.hlni_local_dropped)
2380                                                         == NULL)
2381                                 goto out;
2382                         if (cYAML_create_number(yhstats, "aborted",
2383                                                 hstats.hlni_local_aborted)
2384                                                         == NULL)
2385                                 goto out;
2386                         if (cYAML_create_number(yhstats, "no route",
2387                                                 hstats.hlni_local_no_route)
2388                                                         == NULL)
2389                                 goto out;
2390                         if (cYAML_create_number(yhstats, "timeouts",
2391                                                 hstats.hlni_local_timeout)
2392                                                         == NULL)
2393                                 goto out;
2394                         if (cYAML_create_number(yhstats, "error",
2395                                                 hstats.hlni_local_error)
2396                                                         == NULL)
2397                                 goto out;
2398
2399 continue_without_msg_stats:
2400                         tunables = cYAML_create_object(item, "tunables");
2401                         if (!tunables)
2402                                 goto out;
2403
2404                         rc = lustre_net_show_tunables(tunables, &lnd->lt_cmn);
2405                         if (rc != LUSTRE_CFG_RC_NO_ERR)
2406                                 goto out;
2407
2408                         rc = lustre_ni_show_tunables(tunables, LNET_NETTYP(rc_net),
2409                                                      &lnd->lt_tun);
2410                         if (rc != LUSTRE_CFG_RC_NO_ERR &&
2411                             rc != LUSTRE_CFG_RC_NO_MATCH)
2412                                 goto out;
2413
2414                         if (rc != LUSTRE_CFG_RC_NO_MATCH) {
2415                                 tunables = cYAML_create_object(item,
2416                                                                "lnd tunables");
2417                                 if (tunables == NULL)
2418                                         goto out;
2419                         }
2420
2421                         if (!backup &&
2422                             cYAML_create_number(item, "dev cpt",
2423                                                 ni_data->lic_dev_cpt) == NULL)
2424                                 goto out;
2425
2426                         if (!backup &&
2427                             cYAML_create_number(item, "tcp bonding",
2428                                                 ni_data->lic_tcp_bonding)
2429                                                         == NULL)
2430                                 goto out;
2431
2432                         /* out put the CPTs in the format: "[x,x,x,...]" */
2433                         limit = str_buf + str_buf_len - 3;
2434                         pos += snprintf(pos, limit - pos, "\"[");
2435                         for (j = 0 ; ni_data->lic_ncpts >= 1 &&
2436                                 j < ni_data->lic_ncpts &&
2437                                 pos < limit; j++) {
2438                                 pos += snprintf(pos, limit - pos,
2439                                                 "%d", ni_data->lic_cpts[j]);
2440                                 if ((j + 1) < ni_data->lic_ncpts)
2441                                         pos += snprintf(pos, limit - pos, ",");
2442                         }
2443                         pos += snprintf(pos, 3, "]\"");
2444
2445                         if (ni_data->lic_ncpts >= 1 &&
2446                             cYAML_create_string(item, "CPT",
2447                                                 str_buf) == NULL)
2448                                 goto out;
2449                 }
2450         }
2451
2452         /* Print out the net information only if show_rc is not provided */
2453         if (show_rc == NULL)
2454                 cYAML_print_tree(root);
2455
2456         if (l_errno != ENOENT) {
2457                 snprintf(err_str,
2458                          sizeof(err_str),
2459                          "\"cannot get networks: %s\"",
2460                          strerror(l_errno));
2461                 rc = -l_errno;
2462                 goto out;
2463         } else
2464                 rc = LUSTRE_CFG_RC_NO_ERR;
2465
2466         snprintf(err_str, sizeof(err_str), "\"success\"");
2467 out:
2468         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR || !exist) {
2469                 cYAML_free_tree(root);
2470         } else if (show_rc != NULL && *show_rc != NULL) {
2471                 struct cYAML *show_node;
2472                 /* find the net node, if one doesn't exist
2473                  * then insert one.  Otherwise add to the one there
2474                  */
2475                 show_node = cYAML_get_object_item(*show_rc, "net");
2476                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
2477                         cYAML_insert_child(show_node, first_seq);
2478                         free(net_node);
2479                         free(root);
2480                 } else if (show_node == NULL) {
2481                         cYAML_insert_sibling((*show_rc)->cy_child,
2482                                                 net_node);
2483                         free(root);
2484                 } else {
2485                         cYAML_free_tree(root);
2486                 }
2487         } else {
2488                 *show_rc = root;
2489         }
2490
2491         cYAML_build_error(rc, seq_no, SHOW_CMD, "net", err_str, err_rc);
2492
2493         return rc;
2494 }
2495
2496 int lustre_lnet_enable_routing(int enable, int seq_no, struct cYAML **err_rc)
2497 {
2498         struct lnet_ioctl_config_data data;
2499         int rc = LUSTRE_CFG_RC_NO_ERR;
2500         char err_str[LNET_MAX_STR_LEN];
2501
2502         snprintf(err_str, sizeof(err_str), "\"success\"");
2503
2504         LIBCFS_IOC_INIT_V2(data, cfg_hdr);
2505         data.cfg_config_u.cfg_buffers.buf_enable = (enable) ? 1 : 0;
2506
2507         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_CONFIG_RTR, &data);
2508         if (rc != 0) {
2509                 rc = -errno;
2510                 snprintf(err_str,
2511                          sizeof(err_str),
2512                          "\"cannot %s routing %s\"",
2513                          (enable) ? "enable" : "disable", strerror(errno));
2514                 goto out;
2515         }
2516
2517 out:
2518         cYAML_build_error(rc, seq_no,
2519                          (enable) ? ADD_CMD : DEL_CMD,
2520                          "routing", err_str, err_rc);
2521
2522         return rc;
2523 }
2524
2525 int ioctl_set_value(__u32 val, int ioc, char *name,
2526                     int seq_no, struct cYAML **err_rc)
2527 {
2528         struct lnet_ioctl_set_value data;
2529         int rc = LUSTRE_CFG_RC_NO_ERR;
2530         char err_str[LNET_MAX_STR_LEN];
2531
2532         snprintf(err_str, sizeof(err_str), "\"success\"");
2533
2534         LIBCFS_IOC_INIT_V2(data, sv_hdr);
2535         data.sv_value = val;
2536
2537         rc = l_ioctl(LNET_DEV_ID, ioc , &data);
2538         if (rc != 0) {
2539                 rc = -errno;
2540                 snprintf(err_str,
2541                          sizeof(err_str),
2542                          "\"cannot configure %s to %d: %s\"", name,
2543                          val, strerror(errno));
2544         }
2545
2546         cYAML_build_error(rc, seq_no, ADD_CMD, name, err_str, err_rc);
2547
2548         return rc;
2549 }
2550
2551 int lustre_lnet_config_recov_intrv(int intrv, int seq_no, struct cYAML **err_rc)
2552 {
2553         int rc = LUSTRE_CFG_RC_NO_ERR;
2554         char err_str[LNET_MAX_STR_LEN];
2555         char val[LNET_MAX_STR_LEN];
2556
2557         snprintf(err_str, sizeof(err_str), "\"success\"");
2558
2559         snprintf(val, sizeof(val), "%d", intrv);
2560
2561         rc = write_sysfs_file(modparam_path, "lnet_recovery_interval", val,
2562                               1, strlen(val) + 1);
2563         if (rc)
2564                 snprintf(err_str, sizeof(err_str),
2565                          "\"cannot configure recovery interval: %s\"",
2566                          strerror(errno));
2567
2568         cYAML_build_error(rc, seq_no, ADD_CMD, "recovery_interval", err_str, err_rc);
2569
2570         return rc;
2571 }
2572
2573 int lustre_lnet_config_hsensitivity(int sen, int seq_no, struct cYAML **err_rc)
2574 {
2575         int rc = LUSTRE_CFG_RC_NO_ERR;
2576         char err_str[LNET_MAX_STR_LEN];
2577         char val[LNET_MAX_STR_LEN];
2578
2579         snprintf(err_str, sizeof(err_str), "\"success\"");
2580
2581         snprintf(val, sizeof(val), "%d", sen);
2582
2583         rc = write_sysfs_file(modparam_path, "lnet_health_sensitivity", val,
2584                               1, strlen(val) + 1);
2585         if (rc)
2586                 snprintf(err_str, sizeof(err_str),
2587                          "\"cannot configure health sensitivity: %s\"",
2588                          strerror(errno));
2589
2590         cYAML_build_error(rc, seq_no, ADD_CMD, "health_sensitivity", err_str, err_rc);
2591
2592         return rc;
2593 }
2594
2595 int lustre_lnet_config_transaction_to(int timeout, int seq_no, struct cYAML **err_rc)
2596 {
2597         int rc = LUSTRE_CFG_RC_NO_ERR;
2598         char err_str[LNET_MAX_STR_LEN];
2599         char val[LNET_MAX_STR_LEN];
2600
2601         snprintf(err_str, sizeof(err_str), "\"success\"");
2602
2603         snprintf(val, sizeof(val), "%d", timeout);
2604
2605         rc = write_sysfs_file(modparam_path, "lnet_transaction_timeout", val,
2606                               1, strlen(val) + 1);
2607         if (rc)
2608                 snprintf(err_str, sizeof(err_str),
2609                          "\"cannot configure transaction timeout: %s\"",
2610                          strerror(errno));
2611
2612         cYAML_build_error(rc, seq_no, ADD_CMD, "transaction_timeout", err_str, err_rc);
2613
2614         return rc;
2615 }
2616
2617 int lustre_lnet_config_retry_count(int count, int seq_no, struct cYAML **err_rc)
2618 {
2619         int rc = LUSTRE_CFG_RC_NO_ERR;
2620         char err_str[LNET_MAX_STR_LEN];
2621         char val[LNET_MAX_STR_LEN];
2622
2623         snprintf(err_str, sizeof(err_str), "\"success\"");
2624
2625         snprintf(val, sizeof(val), "%d", count);
2626
2627         rc = write_sysfs_file(modparam_path, "lnet_retry_count", val,
2628                               1, strlen(val) + 1);
2629         if (rc)
2630                 snprintf(err_str, sizeof(err_str),
2631                          "\"cannot configure retry count: %s\"",
2632                          strerror(errno));
2633
2634         cYAML_build_error(rc, seq_no, ADD_CMD, "retry_count", err_str, err_rc);
2635
2636         return rc;
2637 }
2638
2639 int lustre_lnet_config_max_intf(int max, int seq_no, struct cYAML **err_rc)
2640 {
2641         int rc = LUSTRE_CFG_RC_NO_ERR;
2642         char err_str[LNET_MAX_STR_LEN];
2643         char val[LNET_MAX_STR_LEN];
2644
2645         snprintf(err_str, sizeof(err_str), "\"success\"");
2646
2647         snprintf(val, sizeof(val), "%d", max);
2648
2649         rc = write_sysfs_file(modparam_path, "lnet_interfaces_max", val,
2650                               1, strlen(val) + 1);
2651         if (rc)
2652                 snprintf(err_str, sizeof(err_str),
2653                          "\"cannot configure max interfaces: %s\"",
2654                          strerror(errno));
2655
2656         cYAML_build_error(rc, seq_no, ADD_CMD, "max_interfaces", err_str, err_rc);
2657
2658         return rc;
2659 }
2660
2661 int lustre_lnet_config_discovery(int enable, int seq_no, struct cYAML **err_rc)
2662 {
2663         int rc = LUSTRE_CFG_RC_NO_ERR;
2664         char err_str[LNET_MAX_STR_LEN];
2665         char val[LNET_MAX_STR_LEN];
2666
2667         snprintf(err_str, sizeof(err_str), "\"success\"");
2668
2669         snprintf(val, sizeof(val), "%u", (enable) ? 0 : 1);
2670
2671         rc = write_sysfs_file(modparam_path, "lnet_peer_discovery_disabled", val,
2672                               1, strlen(val) + 1);
2673         if (rc)
2674                 snprintf(err_str, sizeof(err_str),
2675                          "\"cannot configure discovery: %s\"",
2676                          strerror(errno));
2677
2678         cYAML_build_error(rc, seq_no, ADD_CMD, "discovery", err_str, err_rc);
2679
2680         return rc;
2681
2682 }
2683
2684 int lustre_lnet_config_drop_asym_route(int drop, int seq_no,
2685                                        struct cYAML **err_rc)
2686 {
2687         int rc = LUSTRE_CFG_RC_NO_ERR;
2688         char err_str[LNET_MAX_STR_LEN];
2689         char val[LNET_MAX_STR_LEN];
2690
2691         snprintf(err_str, sizeof(err_str), "\"success\"");
2692
2693         snprintf(val, sizeof(val), "%u", (drop) ? 1 : 0);
2694
2695         rc = write_sysfs_file(modparam_path, "lnet_drop_asym_route", val,
2696                               1, strlen(val) + 1);
2697         if (rc)
2698                 snprintf(err_str, sizeof(err_str),
2699                          "\"cannot configure drop asym route: %s\"",
2700                          strerror(errno));
2701
2702         cYAML_build_error(rc, seq_no, ADD_CMD, "drop_asym_route",
2703                           err_str, err_rc);
2704
2705         return rc;
2706
2707 }
2708
2709 int lustre_lnet_config_numa_range(int range, int seq_no, struct cYAML **err_rc)
2710 {
2711         return ioctl_set_value(range, IOC_LIBCFS_SET_NUMA_RANGE,
2712                                "numa_range", seq_no, err_rc);
2713 }
2714
2715 int lustre_lnet_config_buffers(int tiny, int small, int large, int seq_no,
2716                                struct cYAML **err_rc)
2717 {
2718         struct lnet_ioctl_config_data data;
2719         int rc = LUSTRE_CFG_RC_NO_ERR;
2720         char err_str[LNET_MAX_STR_LEN];
2721
2722         snprintf(err_str, sizeof(err_str), "\"success\"");
2723
2724         /* -1 indicates to ignore changes to this field */
2725         if (tiny < -1 || small < -1 || large < -1) {
2726                 snprintf(err_str,
2727                          sizeof(err_str),
2728                          "\"tiny, small and large must be >= 0\"");
2729                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
2730                 goto out;
2731         }
2732
2733         LIBCFS_IOC_INIT_V2(data, cfg_hdr);
2734         data.cfg_config_u.cfg_buffers.buf_tiny = tiny;
2735         data.cfg_config_u.cfg_buffers.buf_small = small;
2736         data.cfg_config_u.cfg_buffers.buf_large = large;
2737
2738         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_ADD_BUF, &data);
2739         if (rc != 0) {
2740                 rc = -errno;
2741                 snprintf(err_str,
2742                          sizeof(err_str),
2743                          "\"cannot configure buffers: %s\"", strerror(errno));
2744                 goto out;
2745         }
2746
2747 out:
2748         cYAML_build_error(rc, seq_no, ADD_CMD, "buf", err_str, err_rc);
2749
2750         return rc;
2751 }
2752
2753 int lustre_lnet_show_routing(int seq_no, struct cYAML **show_rc,
2754                              struct cYAML **err_rc, bool backup)
2755 {
2756         struct lnet_ioctl_config_data *data;
2757         struct lnet_ioctl_pool_cfg *pool_cfg = NULL;
2758         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
2759         int l_errno = 0;
2760         char *buf;
2761         char *pools[LNET_NRBPOOLS] = {"tiny", "small", "large"};
2762         int buf_count[LNET_NRBPOOLS] = {0};
2763         struct cYAML *root = NULL, *pools_node = NULL,
2764                      *type_node = NULL, *item = NULL, *cpt = NULL,
2765                      *first_seq = NULL, *buffers = NULL;
2766         int i, j;
2767         char err_str[LNET_MAX_STR_LEN];
2768         char node_name[LNET_MAX_STR_LEN];
2769         bool exist = false;
2770
2771         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
2772
2773         buf = calloc(1, sizeof(*data) + sizeof(*pool_cfg));
2774         if (buf == NULL)
2775                 goto out;
2776
2777         data = (struct lnet_ioctl_config_data *)buf;
2778
2779         root = cYAML_create_object(NULL, NULL);
2780         if (root == NULL)
2781                 goto out;
2782
2783         if (backup)
2784                 pools_node = cYAML_create_object(root, "routing");
2785         else
2786                 pools_node = cYAML_create_seq(root, "routing");
2787         if (pools_node == NULL)
2788                 goto out;
2789
2790         for (i = 0;; i++) {
2791                 LIBCFS_IOC_INIT_V2(*data, cfg_hdr);
2792                 data->cfg_hdr.ioc_len = sizeof(struct lnet_ioctl_config_data) +
2793                                         sizeof(struct lnet_ioctl_pool_cfg);
2794                 data->cfg_count = i;
2795
2796                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_BUF, data);
2797                 if (rc != 0) {
2798                         l_errno = errno;
2799                         break;
2800                 }
2801
2802                 exist = true;
2803
2804                 pool_cfg = (struct lnet_ioctl_pool_cfg *)data->cfg_bulk;
2805
2806                 if (backup)
2807                         goto calculate_buffers;
2808
2809                 snprintf(node_name, sizeof(node_name), "cpt[%d]", i);
2810                 item = cYAML_create_seq_item(pools_node);
2811                 if (item == NULL)
2812                         goto out;
2813
2814                 if (first_seq == NULL)
2815                         first_seq = item;
2816
2817                 cpt = cYAML_create_object(item, node_name);
2818                 if (cpt == NULL)
2819                         goto out;
2820
2821 calculate_buffers:
2822                 /* create the tree  and print */
2823                 for (j = 0; j < LNET_NRBPOOLS; j++) {
2824                         if (!backup) {
2825                                 type_node = cYAML_create_object(cpt, pools[j]);
2826                                 if (type_node == NULL)
2827                                         goto out;
2828                         }
2829                         if (!backup &&
2830                             cYAML_create_number(type_node, "npages",
2831                                                 pool_cfg->pl_pools[j].pl_npages)
2832                             == NULL)
2833                                 goto out;
2834                         if (!backup &&
2835                             cYAML_create_number(type_node, "nbuffers",
2836                                                 pool_cfg->pl_pools[j].
2837                                                   pl_nbuffers) == NULL)
2838                                 goto out;
2839                         if (!backup &&
2840                             cYAML_create_number(type_node, "credits",
2841                                                 pool_cfg->pl_pools[j].
2842                                                    pl_credits) == NULL)
2843                                 goto out;
2844                         if (!backup &&
2845                             cYAML_create_number(type_node, "mincredits",
2846                                                 pool_cfg->pl_pools[j].
2847                                                    pl_mincredits) == NULL)
2848                                 goto out;
2849                         /* keep track of the total count for each of the
2850                          * tiny, small and large buffers */
2851                         buf_count[j] += pool_cfg->pl_pools[j].pl_nbuffers;
2852                 }
2853         }
2854
2855         if (pool_cfg != NULL) {
2856                 if (backup) {
2857                         if (cYAML_create_number(pools_node, "enable",
2858                                                 pool_cfg->pl_routing) ==
2859                         NULL)
2860                                 goto out;
2861
2862                         goto add_buffer_section;
2863                 }
2864
2865                 item = cYAML_create_seq_item(pools_node);
2866                 if (item == NULL)
2867                         goto out;
2868
2869                 if (cYAML_create_number(item, "enable", pool_cfg->pl_routing) ==
2870                     NULL)
2871                         goto out;
2872         }
2873
2874 add_buffer_section:
2875         /* create a buffers entry in the show. This is necessary so that
2876          * if the YAML output is used to configure a node, the buffer
2877          * configuration takes hold */
2878         buffers = cYAML_create_object(root, "buffers");
2879         if (buffers == NULL)
2880                 goto out;
2881
2882         for (i = 0; i < LNET_NRBPOOLS; i++) {
2883                 if (cYAML_create_number(buffers, pools[i], buf_count[i]) == NULL)
2884                         goto out;
2885         }
2886
2887         if (show_rc == NULL)
2888                 cYAML_print_tree(root);
2889
2890         if (l_errno != ENOENT) {
2891                 snprintf(err_str,
2892                          sizeof(err_str),
2893                          "\"cannot get routing information: %s\"",
2894                          strerror(l_errno));
2895                 rc = -l_errno;
2896                 goto out;
2897         } else
2898                 rc = LUSTRE_CFG_RC_NO_ERR;
2899
2900         snprintf(err_str, sizeof(err_str), "\"success\"");
2901         rc = LUSTRE_CFG_RC_NO_ERR;
2902
2903 out:
2904         free(buf);
2905         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR || !exist) {
2906                 cYAML_free_tree(root);
2907         } else if (show_rc != NULL && *show_rc != NULL) {
2908                 struct cYAML *routing_node;
2909                 /* there should exist only one routing block and one
2910                  * buffers block. If there already exists a previous one
2911                  * then don't add another */
2912                 routing_node = cYAML_get_object_item(*show_rc, "routing");
2913                 if (routing_node == NULL) {
2914                         cYAML_insert_sibling((*show_rc)->cy_child,
2915                                                 root->cy_child);
2916                         free(root);
2917                 } else {
2918                         cYAML_free_tree(root);
2919                 }
2920         } else {
2921                 *show_rc = root;
2922         }
2923
2924         cYAML_build_error(rc, seq_no, SHOW_CMD, "routing", err_str, err_rc);
2925
2926         return rc;
2927 }
2928
2929 int lustre_lnet_show_peer(char *knid, int detail, int seq_no,
2930                           struct cYAML **show_rc, struct cYAML **err_rc,
2931                           bool backup)
2932 {
2933         /*
2934          * TODO: This function is changing in a future patch to accommodate
2935          * PEER_LIST and proper filtering on any nid of the peer
2936          */
2937         struct lnet_ioctl_peer_cfg peer_info;
2938         struct lnet_peer_ni_credit_info *lpni_cri;
2939         struct lnet_ioctl_element_stats *lpni_stats;
2940         struct lnet_ioctl_element_msg_stats *msg_stats;
2941         struct lnet_ioctl_peer_ni_hstats *hstats;
2942         lnet_nid_t *nidp;
2943         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
2944         int i, j, k;
2945         int l_errno = 0;
2946         __u32 count;
2947         __u32 size;
2948         struct cYAML *root = NULL, *peer = NULL, *peer_ni = NULL,
2949                      *first_seq = NULL, *peer_root = NULL, *tmp = NULL,
2950                      *msg_statistics = NULL, *statistics = NULL,
2951                      *yhstats;
2952         char err_str[LNET_MAX_STR_LEN];
2953         struct lnet_process_id *list = NULL;
2954         void *data = NULL;
2955         void *lpni_data;
2956         bool exist = false;
2957
2958         snprintf(err_str, sizeof(err_str),
2959                  "\"out of memory\"");
2960
2961         /* create struct cYAML root object */
2962         root = cYAML_create_object(NULL, NULL);
2963         if (root == NULL)
2964                 goto out;
2965
2966         peer_root = cYAML_create_seq(root, "peer");
2967         if (peer_root == NULL)
2968                 goto out;
2969
2970         count = 1000;
2971         size = count * sizeof(struct lnet_process_id);
2972         list = malloc(size);
2973         if (list == NULL) {
2974                 l_errno = ENOMEM;
2975                 goto out;
2976         }
2977         if (knid != NULL) {
2978                 list[0].nid = libcfs_str2nid(knid);
2979                 count = 1;
2980         } else {
2981                 for (;;) {
2982                         memset(&peer_info, 0, sizeof(peer_info));
2983                         LIBCFS_IOC_INIT_V2(peer_info, prcfg_hdr);
2984                         peer_info.prcfg_hdr.ioc_len = sizeof(peer_info);
2985                         peer_info.prcfg_size = size;
2986                         peer_info.prcfg_bulk = list;
2987
2988                         l_errno = 0;
2989                         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_PEER_LIST,
2990                                      &peer_info);
2991                         count = peer_info.prcfg_count;
2992                         if (rc == 0)
2993                                 break;
2994                         l_errno = errno;
2995                         if (l_errno != E2BIG) {
2996                                 snprintf(err_str,
2997                                         sizeof(err_str),
2998                                         "\"cannot get peer list: %s\"",
2999                                         strerror(l_errno));
3000                                 rc = -l_errno;
3001                                 goto out;
3002                         }
3003                         free(list);
3004                         size = peer_info.prcfg_size;
3005                         list = malloc(size);
3006                         if (list == NULL) {
3007                                 l_errno = ENOMEM;
3008                                 goto out;
3009                         }
3010                 }
3011         }
3012
3013         size = 4096;
3014         data = malloc(size);
3015         if (data == NULL) {
3016                 l_errno = ENOMEM;
3017                 goto out;
3018         }
3019
3020         for (i = 0; i < count; i++) {
3021                 for (;;) {
3022                         memset(&peer_info, 0, sizeof(peer_info));
3023                         LIBCFS_IOC_INIT_V2(peer_info, prcfg_hdr);
3024                         peer_info.prcfg_hdr.ioc_len = sizeof(peer_info);
3025                         peer_info.prcfg_prim_nid = list[i].nid;
3026                         peer_info.prcfg_size = size;
3027                         peer_info.prcfg_bulk = data;
3028
3029                         l_errno = 0;
3030                         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_PEER_NI,
3031                                      &peer_info);
3032                         if (rc == 0)
3033                                 break;
3034                         l_errno = errno;
3035                         if (l_errno != E2BIG) {
3036                                 snprintf(err_str,
3037                                         sizeof(err_str),
3038                                         "\"cannot get peer information: %s\"",
3039                                         strerror(l_errno));
3040                                 rc = -l_errno;
3041                                 goto out;
3042                         }
3043                         free(data);
3044                         size = peer_info.prcfg_size;
3045                         data = malloc(size);
3046                         if (data == NULL) {
3047                                 l_errno = ENOMEM;
3048                                 goto out;
3049                         }
3050                 }
3051                 exist = true;
3052
3053                 peer = cYAML_create_seq_item(peer_root);
3054                 if (peer == NULL)
3055                         goto out;
3056
3057                 if (first_seq == NULL)
3058                         first_seq = peer;
3059
3060                 lnet_nid_t pnid = peer_info.prcfg_prim_nid;
3061                 if (cYAML_create_string(peer, "primary nid",
3062                                         libcfs_nid2str(pnid))
3063                     == NULL)
3064                         goto out;
3065                 if (cYAML_create_string(peer, "Multi-Rail",
3066                                         peer_info.prcfg_mr ? "True" : "False")
3067                     == NULL)
3068                         goto out;
3069                 /*
3070                  * print out the state of the peer only if details are
3071                  * requested
3072                  */
3073                 if (detail >= 3) {
3074                         if (!backup &&
3075                             cYAML_create_number(peer, "peer state",
3076                                                 peer_info.prcfg_state)
3077                                 == NULL)
3078                                 goto out;
3079                 }
3080
3081                 tmp = cYAML_create_seq(peer, "peer ni");
3082                 if (tmp == NULL)
3083                         goto out;
3084
3085                 lpni_data = data;
3086                 for (j = 0; j < peer_info.prcfg_count; j++) {
3087                         nidp = lpni_data;
3088                         lpni_cri = (void*)nidp + sizeof(nidp);
3089                         lpni_stats = (void *)lpni_cri + sizeof(*lpni_cri);
3090                         msg_stats = (void *)lpni_stats + sizeof(*lpni_stats);
3091                         hstats = (void *)msg_stats + sizeof(*msg_stats);
3092                         lpni_data = (void *)hstats + sizeof(*hstats);
3093
3094                         peer_ni = cYAML_create_seq_item(tmp);
3095                         if (peer_ni == NULL)
3096                                 goto out;
3097
3098                         if (cYAML_create_string(peer_ni, "nid",
3099                                                 libcfs_nid2str(*nidp))
3100                             == NULL)
3101                                 goto out;
3102
3103                         if (backup)
3104                                 continue;
3105
3106                         if (cYAML_create_string(peer_ni, "state",
3107                                                 lpni_cri->cr_aliveness)
3108                             == NULL)
3109                                 goto out;
3110
3111                         if (!detail)
3112                                 continue;
3113
3114                         if (cYAML_create_number(peer_ni, "max_ni_tx_credits",
3115                                                 lpni_cri->cr_ni_peer_tx_credits)
3116                             == NULL)
3117                                 goto out;
3118
3119                         if (cYAML_create_number(peer_ni, "available_tx_credits",
3120                                                 lpni_cri->cr_peer_tx_credits)
3121                             == NULL)
3122                                 goto out;
3123
3124                         if (cYAML_create_number(peer_ni, "min_tx_credits",
3125                                                 lpni_cri->cr_peer_min_tx_credits)
3126                             == NULL)
3127                                 goto out;
3128
3129                         if (cYAML_create_number(peer_ni, "tx_q_num_of_buf",
3130                                                 lpni_cri->cr_peer_tx_qnob)
3131                             == NULL)
3132                                 goto out;
3133
3134                         if (cYAML_create_number(peer_ni, "available_rtr_credits",
3135                                                 lpni_cri->cr_peer_rtr_credits)
3136                             == NULL)
3137                                 goto out;
3138
3139                         if (cYAML_create_number(peer_ni, "min_rtr_credits",
3140                                                 lpni_cri->cr_peer_min_rtr_credits)
3141                             == NULL)
3142                                 goto out;
3143
3144                         if (cYAML_create_number(peer_ni, "refcount",
3145                                                 lpni_cri->cr_refcount) == NULL)
3146                                 goto out;
3147
3148                         statistics = cYAML_create_object(peer_ni, "statistics");
3149                         if (statistics == NULL)
3150                                 goto out;
3151
3152                         if (cYAML_create_number(statistics, "send_count",
3153                                                 lpni_stats->iel_send_count)
3154                             == NULL)
3155                                 goto out;
3156
3157                         if (cYAML_create_number(statistics, "recv_count",
3158                                                 lpni_stats->iel_recv_count)
3159                             == NULL)
3160                                 goto out;
3161
3162                         if (cYAML_create_number(statistics, "drop_count",
3163                                                 lpni_stats->iel_drop_count)
3164                             == NULL)
3165                                 goto out;
3166
3167                         if (detail < 2)
3168                                 continue;
3169
3170                         for (k = 0; k < 3; k++) {
3171                                 struct lnet_ioctl_comm_count *counts;
3172
3173                                 msg_statistics = cYAML_create_object(peer_ni,
3174                                                  (char *) gmsg_stat_names[k]);
3175                                 if (msg_statistics == NULL)
3176                                         goto out;
3177
3178                                 counts = get_counts(msg_stats, k);
3179                                 if (counts == NULL)
3180                                         goto out;
3181
3182                                 if (!add_msg_stats_to_yaml_blk(msg_statistics,
3183                                                                counts))
3184                                         goto out;
3185                         }
3186
3187                         yhstats = cYAML_create_object(peer_ni, "health stats");
3188                         if (!yhstats)
3189                                 goto out;
3190                         if (cYAML_create_number(yhstats, "health value",
3191                                                 hstats->hlpni_health_value)
3192                                                         == NULL)
3193                                 goto out;
3194                         if (cYAML_create_number(yhstats, "dropped",
3195                                                 hstats->hlpni_remote_dropped)
3196                                                         == NULL)
3197                                 goto out;
3198                         if (cYAML_create_number(yhstats, "timeout",
3199                                                 hstats->hlpni_remote_timeout)
3200                                                         == NULL)
3201                                 goto out;
3202                         if (cYAML_create_number(yhstats, "error",
3203                                                 hstats->hlpni_remote_error)
3204                                                         == NULL)
3205                                 goto out;
3206                         if (cYAML_create_number(yhstats, "network timeout",
3207                                                 hstats->hlpni_network_timeout)
3208                                                         == NULL)
3209                                 goto out;
3210                 }
3211         }
3212
3213         /* print output iff show_rc is not provided */
3214         if (show_rc == NULL)
3215                 cYAML_print_tree(root);
3216
3217         snprintf(err_str, sizeof(err_str), "\"success\"");
3218         rc = LUSTRE_CFG_RC_NO_ERR;
3219
3220 out:
3221         free(list);
3222         free(data);
3223         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR || !exist) {
3224                 cYAML_free_tree(root);
3225         } else if (show_rc != NULL && *show_rc != NULL) {
3226                 struct cYAML *show_node;
3227                 /* find the peer node, if one doesn't exist then
3228                  * insert one.  Otherwise add to the one there
3229                  */
3230                 show_node = cYAML_get_object_item(*show_rc,
3231                                                   "peer");
3232                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
3233                         cYAML_insert_child(show_node, first_seq);
3234                         free(peer_root);
3235                         free(root);
3236                 } else if (show_node == NULL) {
3237                         cYAML_insert_sibling((*show_rc)->cy_child,
3238                                              peer_root);
3239                         free(root);
3240                 } else {
3241                         cYAML_free_tree(root);
3242                 }
3243         } else {
3244                 *show_rc = root;
3245         }
3246
3247         cYAML_build_error(rc, seq_no, SHOW_CMD, "peer", err_str,
3248                           err_rc);
3249
3250         return rc;
3251 }
3252
3253 int lustre_lnet_list_peer(int seq_no,
3254                           struct cYAML **show_rc, struct cYAML **err_rc)
3255 {
3256         struct lnet_ioctl_peer_cfg peer_info;
3257         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3258         __u32 count;
3259         __u32 size;
3260         int i = 0;
3261         int l_errno = 0;
3262         struct cYAML *root = NULL, *list_root = NULL, *first_seq = NULL;
3263         char err_str[LNET_MAX_STR_LEN];
3264         struct lnet_process_id *list = NULL;
3265
3266         snprintf(err_str, sizeof(err_str),
3267                  "\"out of memory\"");
3268
3269         memset(&peer_info, 0, sizeof(peer_info));
3270
3271         /* create struct cYAML root object */
3272         root = cYAML_create_object(NULL, NULL);
3273         if (root == NULL)
3274                 goto out;
3275
3276         list_root = cYAML_create_seq(root, "peer list");
3277         if (list_root == NULL)
3278                 goto out;
3279
3280         count = 1000;
3281         size = count * sizeof(struct lnet_process_id);
3282         list = malloc(size);
3283         if (list == NULL) {
3284                 l_errno = ENOMEM;
3285                 goto out;
3286         }
3287         for (;;) {
3288                 LIBCFS_IOC_INIT_V2(peer_info, prcfg_hdr);
3289                 peer_info.prcfg_hdr.ioc_len = sizeof(peer_info);
3290                 peer_info.prcfg_size = size;
3291                 peer_info.prcfg_bulk = list;
3292
3293                 l_errno = 0;
3294                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_PEER_LIST, &peer_info);
3295                 count = peer_info.prcfg_count;
3296                 if (rc == 0)
3297                         break;
3298                 l_errno = errno;
3299                 if (l_errno != E2BIG) {
3300                         snprintf(err_str,
3301                                 sizeof(err_str),
3302                                 "\"cannot get peer list: %s\"",
3303                                 strerror(l_errno));
3304                         rc = -l_errno;
3305                         goto out;
3306                 }
3307                 free(list);
3308                 size = peer_info.prcfg_size;
3309                 list = malloc(size);
3310                 if (list == NULL) {
3311                         l_errno = ENOMEM;
3312                         goto out;
3313                 }
3314         }
3315
3316         /* count is now the actual number of ids in the list. */
3317         for (i = 0; i < count; i++) {
3318                 if (cYAML_create_string(list_root, "nid",
3319                                         libcfs_nid2str(list[i].nid))
3320                     == NULL)
3321                         goto out;
3322         }
3323
3324         /* print output iff show_rc is not provided */
3325         if (show_rc == NULL)
3326                 cYAML_print_tree(root);
3327
3328         snprintf(err_str, sizeof(err_str), "\"success\"");
3329         rc = LUSTRE_CFG_RC_NO_ERR;
3330
3331 out:
3332         if (list != NULL)
3333                 free(list);
3334         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR) {
3335                 cYAML_free_tree(root);
3336         } else if (show_rc != NULL && *show_rc != NULL) {
3337                 struct cYAML *show_node;
3338                 /* find the peer node, if one doesn't exist then
3339                  * insert one.  Otherwise add to the one there
3340                  */
3341                 show_node = cYAML_get_object_item(*show_rc,
3342                                                   "peer");
3343                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
3344                         cYAML_insert_child(show_node, first_seq);
3345                         free(list_root);
3346                         free(root);
3347                 } else if (show_node == NULL) {
3348                         cYAML_insert_sibling((*show_rc)->cy_child,
3349                                              list_root);
3350                         free(root);
3351                 } else {
3352                         cYAML_free_tree(root);
3353                 }
3354         } else {
3355                 *show_rc = root;
3356         }
3357
3358         cYAML_build_error(rc, seq_no, SHOW_CMD, "peer", err_str,
3359                           err_rc);
3360
3361         return rc;
3362 }
3363
3364 static void add_to_global(struct cYAML *show_rc, struct cYAML *node,
3365                           struct cYAML *root)
3366 {
3367         struct cYAML *show_node;
3368
3369         show_node = cYAML_get_object_item(show_rc, "global");
3370         if (show_node != NULL)
3371                 cYAML_insert_sibling(show_node->cy_child,
3372                                      node->cy_child);
3373         else
3374                 cYAML_insert_sibling(show_rc->cy_child,
3375                                      node);
3376         free(root);
3377 }
3378
3379 static int build_global_yaml_entry(char *err_str, int err_len, int seq_no,
3380                                    char *name, __u32 value,
3381                                    struct cYAML **show_rc,
3382                                    struct cYAML **err_rc, int err)
3383 {
3384         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3385         struct cYAML *root = NULL, *global = NULL;
3386
3387         if (err) {
3388                 rc = err;
3389                 goto out;
3390         }
3391
3392         root = cYAML_create_object(NULL, NULL);
3393         if (root == NULL)
3394                 goto out;
3395
3396         global = cYAML_create_object(root, "global");
3397         if (global == NULL)
3398                 goto out;
3399
3400         if (cYAML_create_number(global, name,
3401                                 value) == NULL)
3402                 goto out;
3403
3404         if (show_rc == NULL)
3405                 cYAML_print_tree(root);
3406
3407         snprintf(err_str, err_len, "\"success\"");
3408
3409         rc = LUSTRE_CFG_RC_NO_ERR;
3410
3411 out:
3412         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR) {
3413                 cYAML_free_tree(root);
3414         } else if (show_rc != NULL && *show_rc != NULL) {
3415                 add_to_global(*show_rc, global, root);
3416         } else {
3417                 *show_rc = root;
3418         }
3419
3420         cYAML_build_error(rc, seq_no, SHOW_CMD, "global", err_str, err_rc);
3421
3422         return rc;
3423 }
3424
3425 static int ioctl_show_global_values(int ioc, int seq_no, char *name,
3426                                     struct cYAML **show_rc,
3427                                     struct cYAML **err_rc)
3428 {
3429         struct lnet_ioctl_set_value data;
3430         int rc;
3431         int l_errno = 0;
3432         char err_str[LNET_MAX_STR_LEN];
3433
3434         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
3435
3436         LIBCFS_IOC_INIT_V2(data, sv_hdr);
3437
3438         rc = l_ioctl(LNET_DEV_ID, ioc, &data);
3439         if (rc != 0) {
3440                 l_errno = -errno;
3441                 snprintf(err_str,
3442                          sizeof(err_str),
3443                          "\"cannot get %s: %s\"",
3444                          name, strerror(l_errno));
3445         }
3446
3447         return build_global_yaml_entry(err_str, sizeof(err_str), seq_no, name,
3448                                        data.sv_value, show_rc, err_rc, l_errno);
3449 }
3450
3451 int lustre_lnet_show_recov_intrv(int seq_no, struct cYAML **show_rc,
3452                                  struct cYAML **err_rc)
3453 {
3454         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3455         char val[LNET_MAX_STR_LEN];
3456         int intrv = -1, l_errno = 0;
3457         char err_str[LNET_MAX_STR_LEN];
3458
3459         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
3460
3461         rc = read_sysfs_file(modparam_path, "lnet_recovery_interval", val,
3462                              1, sizeof(val));
3463         if (rc) {
3464                 l_errno = -errno;
3465                 snprintf(err_str, sizeof(err_str),
3466                          "\"cannot get recovery interval: %d\"", rc);
3467         } else {
3468                 intrv = atoi(val);
3469         }
3470
3471         return build_global_yaml_entry(err_str, sizeof(err_str), seq_no,
3472                                        "recovery_interval", intrv, show_rc,
3473                                        err_rc, l_errno);
3474 }
3475
3476 int lustre_lnet_show_hsensitivity(int seq_no, struct cYAML **show_rc,
3477                                   struct cYAML **err_rc)
3478 {
3479         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3480         char val[LNET_MAX_STR_LEN];
3481         int sen = -1, l_errno = 0;
3482         char err_str[LNET_MAX_STR_LEN];
3483
3484         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
3485
3486         rc = read_sysfs_file(modparam_path, "lnet_health_sensitivity", val,
3487                              1, sizeof(val));
3488         if (rc) {
3489                 l_errno = -errno;
3490                 snprintf(err_str, sizeof(err_str),
3491                          "\"cannot get health sensitivity: %d\"", rc);
3492         } else {
3493                 sen = atoi(val);
3494         }
3495
3496         return build_global_yaml_entry(err_str, sizeof(err_str), seq_no,
3497                                        "health_sensitivity", sen, show_rc,
3498                                        err_rc, l_errno);
3499 }
3500
3501 int lustre_lnet_show_transaction_to(int seq_no, struct cYAML **show_rc,
3502                                     struct cYAML **err_rc)
3503 {
3504         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3505         char val[LNET_MAX_STR_LEN];
3506         int tto = -1, l_errno = 0;
3507         char err_str[LNET_MAX_STR_LEN];
3508
3509         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
3510
3511         rc = read_sysfs_file(modparam_path, "lnet_transaction_timeout", val,
3512                              1, sizeof(val));
3513         if (rc) {
3514                 l_errno = -errno;
3515                 snprintf(err_str, sizeof(err_str),
3516                          "\"cannot get transaction timeout: %d\"", rc);
3517         } else {
3518                 tto = atoi(val);
3519         }
3520
3521         return build_global_yaml_entry(err_str, sizeof(err_str), seq_no,
3522                                        "transaction_timeout", tto, show_rc,
3523                                        err_rc, l_errno);
3524 }
3525
3526 int lustre_lnet_show_retry_count(int seq_no, struct cYAML **show_rc,
3527                                  struct cYAML **err_rc)
3528 {
3529         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3530         char val[LNET_MAX_STR_LEN];
3531         int retry_count = -1, l_errno = 0;
3532         char err_str[LNET_MAX_STR_LEN];
3533
3534         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
3535
3536         rc = read_sysfs_file(modparam_path, "lnet_retry_count", val,
3537                              1, sizeof(val));
3538         if (rc) {
3539                 l_errno = -errno;
3540                 snprintf(err_str, sizeof(err_str),
3541                          "\"cannot get retry count: %d\"", rc);
3542         } else {
3543                 retry_count = atoi(val);
3544         }
3545
3546         return build_global_yaml_entry(err_str, sizeof(err_str), seq_no,
3547                                        "retry_count", retry_count, show_rc,
3548                                        err_rc, l_errno);
3549 }
3550
3551 int show_recovery_queue(enum lnet_health_type type, char *name, int seq_no,
3552                         struct cYAML **show_rc, struct cYAML **err_rc)
3553 {
3554         struct lnet_ioctl_recovery_list nid_list;
3555         struct cYAML *root = NULL, *nids = NULL;
3556         int rc, i;
3557         char err_str[LNET_MAX_STR_LEN];
3558
3559         snprintf(err_str, sizeof(err_str), "failed to print recovery queue\n");
3560
3561         LIBCFS_IOC_INIT_V2(nid_list, rlst_hdr);
3562         nid_list.rlst_type = type;
3563
3564         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_RECOVERY_QUEUE, &nid_list);
3565         if (rc) {
3566                 rc = errno;
3567                 goto out;
3568         }
3569
3570         if (nid_list.rlst_num_nids == 0)
3571                 goto out;
3572
3573         root = cYAML_create_object(NULL, NULL);
3574         if (root == NULL)
3575                 goto out;
3576
3577         nids = cYAML_create_object(root, name);
3578         if (nids == NULL)
3579                 goto out;
3580
3581         rc = -EINVAL;
3582
3583         for (i = 0; i < nid_list.rlst_num_nids; i++) {
3584                 char nidenum[LNET_MAX_STR_LEN];
3585                 snprintf(nidenum, sizeof(nidenum), "nid-%d", i);
3586                 if (!cYAML_create_string(nids, nidenum,
3587                         libcfs_nid2str(nid_list.rlst_nid_array[i])))
3588                         goto out;
3589         }
3590
3591         snprintf(err_str, sizeof(err_str), "success\n");
3592
3593         rc = 0;
3594
3595 out:
3596         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR) {
3597                 cYAML_free_tree(root);
3598         } else if (show_rc != NULL && *show_rc != NULL) {
3599                 struct cYAML *show_node;
3600                 /* find the net node, if one doesn't exist
3601                  * then insert one.  Otherwise add to the one there
3602                  */
3603                 show_node = cYAML_get_object_item(*show_rc, name);
3604                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
3605                         cYAML_insert_child(show_node, nids);
3606                         free(nids);
3607                         free(root);
3608                 } else if (show_node == NULL) {
3609                         cYAML_insert_sibling((*show_rc)->cy_child,
3610                                                 nids);
3611                         free(root);
3612                 } else {
3613                         cYAML_free_tree(root);
3614                 }
3615         } else {
3616                 *show_rc = root;
3617         }
3618
3619         cYAML_build_error(rc, seq_no, SHOW_CMD, name, err_str, err_rc);
3620
3621         return rc;
3622 }
3623
3624 int lustre_lnet_show_local_ni_recovq(int seq_no, struct cYAML **show_rc,
3625                                      struct cYAML **err_rc)
3626 {
3627         return show_recovery_queue(LNET_HEALTH_TYPE_LOCAL_NI, "local NI recovery",
3628                                    seq_no, show_rc, err_rc);
3629 }
3630
3631 int lustre_lnet_show_peer_ni_recovq(int seq_no, struct cYAML **show_rc,
3632                                     struct cYAML **err_rc)
3633 {
3634         return show_recovery_queue(LNET_HEALTH_TYPE_PEER_NI, "peer NI recovery",
3635                                    seq_no, show_rc, err_rc);
3636 }
3637
3638 int lustre_lnet_show_max_intf(int seq_no, struct cYAML **show_rc,
3639                               struct cYAML **err_rc)
3640 {
3641         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3642         char val[LNET_MAX_STR_LEN];
3643         int max_intf = -1, l_errno = 0;
3644         char err_str[LNET_MAX_STR_LEN];
3645
3646         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
3647
3648         rc = read_sysfs_file(modparam_path, "lnet_interfaces_max", val,
3649                              1, sizeof(val));
3650         if (rc) {
3651                 l_errno = -errno;
3652                 snprintf(err_str, sizeof(err_str),
3653                          "\"cannot get max interfaces: %d\"", rc);
3654         } else {
3655                 max_intf = atoi(val);
3656         }
3657
3658         return build_global_yaml_entry(err_str, sizeof(err_str), seq_no,
3659                                        "max_intf", max_intf, show_rc,
3660                                        err_rc, l_errno);
3661 }
3662
3663 int lustre_lnet_show_discovery(int seq_no, struct cYAML **show_rc,
3664                                struct cYAML **err_rc)
3665 {
3666         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3667         char val[LNET_MAX_STR_LEN];
3668         int discovery = -1, l_errno = 0;
3669         char err_str[LNET_MAX_STR_LEN];
3670
3671         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
3672
3673         rc = read_sysfs_file(modparam_path, "lnet_peer_discovery_disabled", val,
3674                              1, sizeof(val));
3675         if (rc) {
3676                 l_errno = -errno;
3677                 snprintf(err_str, sizeof(err_str),
3678                          "\"cannot get discovery setting: %d\"", rc);
3679         } else {
3680                 /*
3681                  * The kernel stores a discovery disabled value. User space
3682                  * shows whether discovery is enabled. So the value must be
3683                  * inverted.
3684                  */
3685                 discovery = !atoi(val);
3686         }
3687
3688         return build_global_yaml_entry(err_str, sizeof(err_str), seq_no,
3689                                        "discovery", discovery, show_rc,
3690                                        err_rc, l_errno);
3691 }
3692
3693 int lustre_lnet_show_drop_asym_route(int seq_no, struct cYAML **show_rc,
3694                                      struct cYAML **err_rc)
3695 {
3696         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3697         char val[LNET_MAX_STR_LEN];
3698         int drop_asym_route = -1, l_errno = 0;
3699         char err_str[LNET_MAX_STR_LEN];
3700
3701         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
3702
3703         rc = read_sysfs_file(modparam_path, "lnet_drop_asym_route", val,
3704                              1, sizeof(val));
3705         if (rc) {
3706                 l_errno = -errno;
3707                 snprintf(err_str, sizeof(err_str),
3708                          "\"cannot get drop asym route setting: %d\"", rc);
3709         } else {
3710                 drop_asym_route = atoi(val);
3711         }
3712
3713         return build_global_yaml_entry(err_str, sizeof(err_str), seq_no,
3714                                        "drop_asym_route", drop_asym_route,
3715                                        show_rc, err_rc, l_errno);
3716 }
3717
3718 int lustre_lnet_show_numa_range(int seq_no, struct cYAML **show_rc,
3719                                 struct cYAML **err_rc)
3720 {
3721         return ioctl_show_global_values(IOC_LIBCFS_GET_NUMA_RANGE, seq_no,
3722                                         "numa_range", show_rc, err_rc);
3723 }
3724
3725 int lustre_lnet_show_stats(int seq_no, struct cYAML **show_rc,
3726                            struct cYAML **err_rc)
3727 {
3728         struct lnet_ioctl_lnet_stats data;
3729         struct lnet_counters *cntrs;
3730         int rc;
3731         int l_errno;
3732         char err_str[LNET_MAX_STR_LEN];
3733         struct cYAML *root = NULL, *stats = NULL;
3734
3735         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
3736
3737         LIBCFS_IOC_INIT_V2(data, st_hdr);
3738
3739         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_LNET_STATS, &data);
3740         if (rc) {
3741                 l_errno = errno;
3742                 snprintf(err_str,
3743                          sizeof(err_str),
3744                          "\"cannot get lnet statistics: %s\"",
3745                          strerror(l_errno));
3746                 rc = -l_errno;
3747                 goto out;
3748         }
3749
3750         rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3751
3752         cntrs = &data.st_cntrs;
3753
3754         root = cYAML_create_object(NULL, NULL);
3755         if (!root)
3756                 goto out;
3757
3758         stats = cYAML_create_object(root, "statistics");
3759         if (!stats)
3760                 goto out;
3761
3762         if (!cYAML_create_number(stats, "msgs_alloc",
3763                                  cntrs->lct_common.lcc_msgs_alloc))
3764                 goto out;
3765
3766         if (!cYAML_create_number(stats, "msgs_max",
3767                                  cntrs->lct_common.lcc_msgs_max))
3768                 goto out;
3769
3770         if (!cYAML_create_number(stats, "rst_alloc",
3771                                  cntrs->lct_health.lch_rst_alloc))
3772                 goto out;
3773
3774         if (!cYAML_create_number(stats, "errors",
3775                                  cntrs->lct_common.lcc_errors))
3776                 goto out;
3777
3778         if (!cYAML_create_number(stats, "send_count",
3779                                  cntrs->lct_common.lcc_send_count))
3780                 goto out;
3781
3782         if (!cYAML_create_number(stats, "resend_count",
3783                                  cntrs->lct_health.lch_resend_count))
3784                 goto out;
3785
3786         if (!cYAML_create_number(stats, "response_timeout_count",
3787                                  cntrs->lct_health.lch_response_timeout_count))
3788                 goto out;
3789
3790         if (!cYAML_create_number(stats, "local_interrupt_count",
3791                                  cntrs->lct_health.lch_local_interrupt_count))
3792                 goto out;
3793
3794         if (!cYAML_create_number(stats, "local_dropped_count",
3795                                  cntrs->lct_health.lch_local_dropped_count))
3796                 goto out;
3797
3798         if (!cYAML_create_number(stats, "local_aborted_count",
3799                                  cntrs->lct_health.lch_local_aborted_count))
3800                 goto out;
3801
3802         if (!cYAML_create_number(stats, "local_no_route_count",
3803                                  cntrs->lct_health.lch_local_no_route_count))
3804                 goto out;
3805
3806         if (!cYAML_create_number(stats, "local_timeout_count",
3807                                  cntrs->lct_health.lch_local_timeout_count))
3808                 goto out;
3809
3810         if (!cYAML_create_number(stats, "local_error_count",
3811                                  cntrs->lct_health.lch_local_error_count))
3812                 goto out;
3813
3814         if (!cYAML_create_number(stats, "remote_dropped_count",
3815                                  cntrs->lct_health.lch_remote_dropped_count))
3816                 goto out;
3817
3818         if (!cYAML_create_number(stats, "remote_error_count",
3819                                  cntrs->lct_health.lch_remote_error_count))
3820                 goto out;
3821
3822         if (!cYAML_create_number(stats, "remote_timeout_count",
3823                                  cntrs->lct_health.lch_remote_timeout_count))
3824                 goto out;
3825
3826         if (!cYAML_create_number(stats, "network_timeout_count",
3827                                  cntrs->lct_health.lch_network_timeout_count))
3828                 goto out;
3829
3830         if (!cYAML_create_number(stats, "recv_count",
3831                                  cntrs->lct_common.lcc_recv_count))
3832                 goto out;
3833
3834         if (!cYAML_create_number(stats, "route_count",
3835                                  cntrs->lct_common.lcc_route_count))
3836                 goto out;
3837
3838         if (!cYAML_create_number(stats, "drop_count",
3839                                  cntrs->lct_common.lcc_drop_count))
3840                 goto out;
3841
3842         if (!cYAML_create_number(stats, "send_length",
3843                                  cntrs->lct_common.lcc_send_length))
3844                 goto out;
3845
3846         if (!cYAML_create_number(stats, "recv_length",
3847                                  cntrs->lct_common.lcc_recv_length))
3848                 goto out;
3849
3850         if (!cYAML_create_number(stats, "route_length",
3851                                  cntrs->lct_common.lcc_route_length))
3852                 goto out;
3853
3854         if (!cYAML_create_number(stats, "drop_length",
3855                                  cntrs->lct_common.lcc_drop_length))
3856                 goto out;
3857
3858         if (!show_rc)
3859                 cYAML_print_tree(root);
3860
3861         snprintf(err_str, sizeof(err_str), "\"success\"");
3862         rc = LUSTRE_CFG_RC_NO_ERR;
3863 out:
3864         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR) {
3865                 cYAML_free_tree(root);
3866         } else if (show_rc != NULL && *show_rc != NULL) {
3867                 cYAML_insert_sibling((*show_rc)->cy_child,
3868                                         root->cy_child);
3869                 free(root);
3870         } else {
3871                 *show_rc = root;
3872         }
3873
3874         cYAML_build_error(rc, seq_no, SHOW_CMD, "statistics", err_str, err_rc);
3875
3876         return rc;
3877 }
3878
3879 typedef int (*cmd_handler_t)(struct cYAML *tree,
3880                              struct cYAML **show_rc,
3881                              struct cYAML **err_rc);
3882
3883 static int handle_yaml_config_route(struct cYAML *tree, struct cYAML **show_rc,
3884                                     struct cYAML **err_rc)
3885 {
3886         struct cYAML *net, *gw, *hop, *prio, *seq_no;
3887
3888         net = cYAML_get_object_item(tree, "net");
3889         gw = cYAML_get_object_item(tree, "gateway");
3890         hop = cYAML_get_object_item(tree, "hop");
3891         prio = cYAML_get_object_item(tree, "priority");
3892         seq_no = cYAML_get_object_item(tree, "seq_no");
3893
3894         return lustre_lnet_config_route((net) ? net->cy_valuestring : NULL,
3895                                         (gw) ? gw->cy_valuestring : NULL,
3896                                         (hop) ? hop->cy_valueint : -1,
3897                                         (prio) ? prio->cy_valueint : -1,
3898                                         (seq_no) ? seq_no->cy_valueint : -1,
3899                                         err_rc);
3900 }
3901
3902 static void yaml_free_string_array(char **array, int num)
3903 {
3904         int i;
3905         char **sub_array = array;
3906
3907         for (i = 0; i < num; i++) {
3908                 if (*sub_array != NULL)
3909                         free(*sub_array);
3910                 sub_array++;
3911         }
3912         if (array)
3913                 free(array);
3914 }
3915
3916 /*
3917  *    interfaces:
3918  *        0: <intf_name>['['<expr>']']
3919  *        1: <intf_name>['['<expr>']']
3920  */
3921 static int yaml_copy_intf_info(struct cYAML *intf_tree,
3922                                struct lnet_dlc_network_descr *nw_descr)
3923 {
3924         struct cYAML *child = NULL;
3925         int intf_num = 0, rc = LUSTRE_CFG_RC_NO_ERR;
3926         struct lnet_dlc_intf_descr *intf_descr, *tmp;
3927
3928         if (intf_tree == NULL || nw_descr == NULL)
3929                 return LUSTRE_CFG_RC_BAD_PARAM;
3930
3931         /* now grab all the interfaces and their cpts */
3932         child = intf_tree->cy_child;
3933         while (child != NULL) {
3934                 if (child->cy_valuestring == NULL) {
3935                         child = child->cy_next;
3936                         continue;
3937                 }
3938
3939                 if (strlen(child->cy_valuestring) >= LNET_MAX_STR_LEN)
3940                         goto failed;
3941
3942                 rc = lustre_lnet_add_intf_descr(&nw_descr->nw_intflist,
3943                                                 child->cy_valuestring,
3944                                                 strlen(child->cy_valuestring));
3945                 if (rc != LUSTRE_CFG_RC_NO_ERR)
3946                         goto failed;
3947
3948                 intf_num++;
3949                 child = child->cy_next;
3950         }
3951
3952         if (intf_num == 0)
3953                 return LUSTRE_CFG_RC_MISSING_PARAM;
3954
3955         return intf_num;
3956
3957 failed:
3958         list_for_each_entry_safe(intf_descr, tmp, &nw_descr->nw_intflist,
3959                                  intf_on_network) {
3960                 list_del(&intf_descr->intf_on_network);
3961                 free_intf_descr(intf_descr);
3962         }
3963
3964         return rc;
3965 }
3966
3967 static bool
3968 yaml_extract_cmn_tunables(struct cYAML *tree,
3969                           struct lnet_ioctl_config_lnd_cmn_tunables *tunables,
3970                           struct cfs_expr_list **global_cpts)
3971 {
3972         struct cYAML *tun, *item, *smp;
3973         int rc;
3974
3975         tun = cYAML_get_object_item(tree, "tunables");
3976         if (tun != NULL) {
3977                 item = cYAML_get_object_item(tun, "peer_timeout");
3978                 if (item != NULL)
3979                         tunables->lct_peer_timeout = item->cy_valueint;
3980                 item = cYAML_get_object_item(tun, "peer_credits");
3981                 if (item != NULL)
3982                         tunables->lct_peer_tx_credits = item->cy_valueint;
3983                 item = cYAML_get_object_item(tun, "peer_buffer_credits");
3984                 if (item != NULL)
3985                         tunables->lct_peer_rtr_credits = item->cy_valueint;
3986                 item = cYAML_get_object_item(tun, "credits");
3987                 if (item != NULL)
3988                         tunables->lct_max_tx_credits = item->cy_valueint;
3989                 smp = cYAML_get_object_item(tun, "CPT");
3990                 if (smp != NULL) {
3991                         rc = cfs_expr_list_parse(smp->cy_valuestring,
3992                                                  strlen(smp->cy_valuestring),
3993                                                  0, UINT_MAX, global_cpts);
3994                         if (rc != 0)
3995                                 *global_cpts = NULL;
3996                 }
3997
3998                 return true;
3999         }
4000
4001         return false;
4002 }
4003
4004 static bool
4005 yaml_extract_tunables(struct cYAML *tree,
4006                       struct lnet_ioctl_config_lnd_tunables *tunables,
4007                       struct cfs_expr_list **global_cpts,
4008                       __u32 net_type)
4009 {
4010         bool rc;
4011
4012         rc = yaml_extract_cmn_tunables(tree, &tunables->lt_cmn,
4013                                        global_cpts);
4014
4015         if (!rc)
4016                 return rc;
4017
4018         lustre_yaml_extract_lnd_tunables(tree, net_type,
4019                                          &tunables->lt_tun);
4020
4021         return rc;
4022 }
4023
4024 /*
4025  * net:
4026  *    - net type: <net>[<NUM>]
4027   *      local NI(s):
4028  *        - nid: <ip>@<net>[<NUM>]
4029  *          status: up
4030  *          interfaces:
4031  *               0: <intf_name>['['<expr>']']
4032  *               1: <intf_name>['['<expr>']']
4033  *        tunables:
4034  *               peer_timeout: <NUM>
4035  *               peer_credits: <NUM>
4036  *               peer_buffer_credits: <NUM>
4037  *               credits: <NUM>
4038 *         lnd tunables:
4039  *               peercredits_hiw: <NUM>
4040  *               map_on_demand: <NUM>
4041  *               concurrent_sends: <NUM>
4042  *               fmr_pool_size: <NUM>
4043  *               fmr_flush_trigger: <NUM>
4044  *               fmr_cache: <NUM>
4045  *
4046  * At least one interface is required. If no interfaces are provided the
4047  * network interface can not be configured.
4048  */
4049 static int handle_yaml_config_ni(struct cYAML *tree, struct cYAML **show_rc,
4050                                  struct cYAML **err_rc)
4051 {
4052         struct cYAML *net, *intf, *seq_no, *ip2net = NULL, *local_nis = NULL,
4053                      *item = NULL;
4054         int num_entries = 0, rc;
4055         struct lnet_dlc_network_descr nw_descr;
4056         struct cfs_expr_list *global_cpts = NULL;
4057         struct lnet_ioctl_config_lnd_tunables tunables;
4058         bool found = false;
4059
4060         memset(&tunables, 0, sizeof(tunables));
4061
4062         INIT_LIST_HEAD(&nw_descr.network_on_rule);
4063         INIT_LIST_HEAD(&nw_descr.nw_intflist);
4064
4065         ip2net = cYAML_get_object_item(tree, "ip2net");
4066         net = cYAML_get_object_item(tree, "net type");
4067         if (net)
4068                 nw_descr.nw_id = libcfs_str2net(net->cy_valuestring);
4069         else
4070                 nw_descr.nw_id = LOLND;
4071
4072         /*
4073          * if neither net nor ip2nets are present, then we can not
4074          * configure the network.
4075          */
4076         if (!net && !ip2net)
4077                 return LUSTRE_CFG_RC_MISSING_PARAM;
4078
4079         local_nis = cYAML_get_object_item(tree, "local NI(s)");
4080         if (local_nis == NULL)
4081                 return LUSTRE_CFG_RC_MISSING_PARAM;
4082
4083         if (!cYAML_is_sequence(local_nis))
4084                 return LUSTRE_CFG_RC_BAD_PARAM;
4085
4086         while (cYAML_get_next_seq_item(local_nis, &item) != NULL) {
4087                 intf = cYAML_get_object_item(item, "interfaces");
4088                 if (intf == NULL)
4089                         continue;
4090                 num_entries = yaml_copy_intf_info(intf, &nw_descr);
4091                 if (num_entries <= 0) {
4092                         cYAML_build_error(num_entries, -1, "ni", "add",
4093                                         "bad interface list",
4094                                         err_rc);
4095                         return LUSTRE_CFG_RC_BAD_PARAM;
4096                 }
4097         }
4098
4099         found = yaml_extract_tunables(tree, &tunables, &global_cpts,
4100                                       LNET_NETTYP(nw_descr.nw_id));
4101         seq_no = cYAML_get_object_item(tree, "seq_no");
4102
4103         rc = lustre_lnet_config_ni(&nw_descr,
4104                                    global_cpts,
4105                                    (ip2net) ? ip2net->cy_valuestring : NULL,
4106                                    (found) ? &tunables: NULL,
4107                                    (seq_no) ? seq_no->cy_valueint : -1,
4108                                    err_rc);
4109
4110         if (global_cpts != NULL)
4111                 cfs_expr_list_free(global_cpts);
4112
4113         return rc;
4114 }
4115
4116 /*
4117  * ip2nets:
4118  *  - net-spec: <tcp|o2ib|gni>[NUM]
4119  *    interfaces:
4120  *        0: <intf name>['['<expr>']']
4121  *        1: <intf name>['['<expr>']']
4122  *    ip-range:
4123  *        0: <expr.expr.expr.expr>
4124  *        1: <expr.expr.expr.expr>
4125  */
4126 static int handle_yaml_config_ip2nets(struct cYAML *tree,
4127                                       struct cYAML **show_rc,
4128                                       struct cYAML **err_rc)
4129 {
4130         struct cYAML *net, *ip_range, *item = NULL, *intf = NULL,
4131                      *seq_no = NULL;
4132         struct lustre_lnet_ip2nets ip2nets;
4133         struct lustre_lnet_ip_range_descr *ip_range_descr = NULL,
4134                                           *tmp = NULL;
4135         int rc = LUSTRE_CFG_RC_NO_ERR;
4136         struct cfs_expr_list *global_cpts = NULL;
4137         struct cfs_expr_list *el, *el_tmp;
4138         struct lnet_ioctl_config_lnd_tunables tunables;
4139         struct lnet_dlc_intf_descr *intf_descr, *intf_tmp;
4140         bool found = false;
4141
4142         memset(&tunables, 0, sizeof(tunables));
4143
4144         /* initialize all lists */
4145         INIT_LIST_HEAD(&ip2nets.ip2nets_ip_ranges);
4146         INIT_LIST_HEAD(&ip2nets.ip2nets_net.network_on_rule);
4147         INIT_LIST_HEAD(&ip2nets.ip2nets_net.nw_intflist);
4148
4149         net = cYAML_get_object_item(tree, "net-spec");
4150         if (net == NULL)
4151                 return LUSTRE_CFG_RC_BAD_PARAM;
4152
4153         if (net != NULL && net->cy_valuestring == NULL)
4154                 return LUSTRE_CFG_RC_BAD_PARAM;
4155
4156         /* assign the network id */
4157         ip2nets.ip2nets_net.nw_id = libcfs_str2net(net->cy_valuestring);
4158         if (ip2nets.ip2nets_net.nw_id == LNET_NID_ANY)
4159                 return LUSTRE_CFG_RC_BAD_PARAM;
4160
4161         seq_no = cYAML_get_object_item(tree, "seq_no");
4162
4163         intf = cYAML_get_object_item(tree, "interfaces");
4164         if (intf != NULL) {
4165                 rc = yaml_copy_intf_info(intf, &ip2nets.ip2nets_net);
4166                 if (rc <= 0)
4167                         return LUSTRE_CFG_RC_BAD_PARAM;
4168         }
4169
4170         ip_range = cYAML_get_object_item(tree, "ip-range");
4171         if (ip_range != NULL) {
4172                 item = ip_range->cy_child;
4173                 while (item != NULL) {
4174                         if (item->cy_valuestring == NULL) {
4175                                 item = item->cy_next;
4176                                 continue;
4177                         }
4178
4179                         rc = lustre_lnet_add_ip_range(&ip2nets.ip2nets_ip_ranges,
4180                                                       item->cy_valuestring);
4181
4182                         if (rc != LUSTRE_CFG_RC_NO_ERR)
4183                                 goto out;
4184
4185                         item = item->cy_next;
4186                 }
4187         }
4188
4189         found = yaml_extract_tunables(tree, &tunables, &global_cpts,
4190                                       LNET_NETTYP(ip2nets.ip2nets_net.nw_id));
4191
4192         rc = lustre_lnet_config_ip2nets(&ip2nets,
4193                         (found) ? &tunables : NULL,
4194                         global_cpts,
4195                         (seq_no) ? seq_no->cy_valueint : -1,
4196                         err_rc);
4197
4198         /*
4199          * don't stop because there was no match. Continue processing the
4200          * rest of the rules. If non-match then nothing is configured
4201          */
4202         if (rc == LUSTRE_CFG_RC_NO_MATCH)
4203                 rc = LUSTRE_CFG_RC_NO_ERR;
4204 out:
4205         list_for_each_entry_safe(intf_descr, intf_tmp,
4206                                  &ip2nets.ip2nets_net.nw_intflist,
4207                                  intf_on_network) {
4208                 list_del(&intf_descr->intf_on_network);
4209                 free_intf_descr(intf_descr);
4210         }
4211
4212         list_for_each_entry_safe(ip_range_descr, tmp,
4213                                  &ip2nets.ip2nets_ip_ranges,
4214                                  ipr_entry) {
4215                 list_del(&ip_range_descr->ipr_entry);
4216                 list_for_each_entry_safe(el, el_tmp, &ip_range_descr->ipr_expr,
4217                                          el_link) {
4218                         list_del(&el->el_link);
4219                         cfs_expr_list_free(el);
4220                 }
4221                 free(ip_range_descr);
4222         }
4223
4224         return rc;
4225 }
4226
4227 static int handle_yaml_del_ni(struct cYAML *tree, struct cYAML **show_rc,
4228                               struct cYAML **err_rc)
4229 {
4230         struct cYAML *net = NULL, *intf = NULL, *seq_no = NULL, *item = NULL,
4231                      *local_nis = NULL;
4232         int num_entries, rc;
4233         struct lnet_dlc_network_descr nw_descr;
4234
4235         INIT_LIST_HEAD(&nw_descr.network_on_rule);
4236         INIT_LIST_HEAD(&nw_descr.nw_intflist);
4237
4238         net = cYAML_get_object_item(tree, "net type");
4239         if (net != NULL)
4240                 nw_descr.nw_id = libcfs_str2net(net->cy_valuestring);
4241
4242         local_nis = cYAML_get_object_item(tree, "local NI(s)");
4243         if (local_nis == NULL)
4244                 return LUSTRE_CFG_RC_MISSING_PARAM;
4245
4246         if (!cYAML_is_sequence(local_nis))
4247                 return LUSTRE_CFG_RC_BAD_PARAM;
4248
4249         while (cYAML_get_next_seq_item(local_nis, &item) != NULL) {
4250                 intf = cYAML_get_object_item(item, "interfaces");
4251                 if (intf == NULL)
4252                         continue;
4253                 num_entries = yaml_copy_intf_info(intf, &nw_descr);
4254                 if (num_entries <= 0) {
4255                         cYAML_build_error(num_entries, -1, "ni", "add",
4256                                         "bad interface list",
4257                                         err_rc);
4258                         return LUSTRE_CFG_RC_BAD_PARAM;
4259                 }
4260         }
4261
4262         seq_no = cYAML_get_object_item(tree, "seq_no");
4263
4264         rc = lustre_lnet_del_ni((net) ? &nw_descr : NULL,
4265                                 (seq_no) ? seq_no->cy_valueint : -1,
4266                                 err_rc);
4267
4268         return rc;
4269 }
4270
4271 static int yaml_copy_peer_nids(struct cYAML *nids_entry, char ***nidsppp,
4272                                char *prim_nid, bool del)
4273 {
4274         struct cYAML *child = NULL, *entry = NULL;
4275         char **nids = NULL;
4276         int num = 0, rc = LUSTRE_CFG_RC_NO_ERR;
4277
4278         if (cYAML_is_sequence(nids_entry)) {
4279                 while (cYAML_get_next_seq_item(nids_entry, &child)) {
4280                         entry = cYAML_get_object_item(child, "nid");
4281                         /* don't count an empty entry */
4282                         if (!entry || !entry->cy_valuestring)
4283                                 continue;
4284
4285                         if (prim_nid &&
4286                             (strcmp(entry->cy_valuestring, prim_nid)
4287                                         == 0) && del) {
4288                                 /*
4289                                  * primary nid is present in the list of
4290                                  * nids so that means we want to delete
4291                                  * the entire peer, so no need to go
4292                                  * further. Just delete the entire peer.
4293                                  */
4294                                 return 0;
4295                         }
4296
4297                         num++;
4298                 }
4299         }
4300
4301         if (num == 0)
4302                 return LUSTRE_CFG_RC_MISSING_PARAM;
4303
4304         nids = calloc(sizeof(*nids), num);
4305         if (!nids)
4306                 return LUSTRE_CFG_RC_OUT_OF_MEM;
4307
4308         /* now grab all the nids */
4309         num = 0;
4310         child = NULL;
4311         while (cYAML_get_next_seq_item(nids_entry, &child)) {
4312                 entry = cYAML_get_object_item(child, "nid");
4313                 if (!entry || !entry->cy_valuestring)
4314                         continue;
4315
4316                 nids[num] = calloc(strlen(entry->cy_valuestring) + 1, 1);
4317                 if (!nids[num]) {
4318                         rc = LUSTRE_CFG_RC_OUT_OF_MEM;
4319                         goto failed;
4320                 }
4321                 strncpy(nids[num], entry->cy_valuestring,
4322                         strlen(entry->cy_valuestring));
4323                 num++;
4324         }
4325         rc = num;
4326
4327         *nidsppp = nids;
4328         return rc;
4329
4330 failed:
4331         if (nids != NULL)
4332                 yaml_free_string_array(nids, num);
4333         *nidsppp = NULL;
4334         return rc;
4335 }
4336
4337 static int handle_yaml_config_peer(struct cYAML *tree, struct cYAML **show_rc,
4338                                    struct cYAML **err_rc)
4339 {
4340         char **nids = NULL;
4341         int num, rc;
4342         struct cYAML *seq_no, *prim_nid, *mr, *ip2nets, *peer_nis;
4343         char err_str[LNET_MAX_STR_LEN];
4344         bool mr_value;
4345
4346         seq_no = cYAML_get_object_item(tree, "seq_no");
4347         prim_nid = cYAML_get_object_item(tree, "primary nid");
4348         mr = cYAML_get_object_item(tree, "Multi-Rail");
4349         ip2nets = cYAML_get_object_item(tree, "ip2nets");
4350         peer_nis = cYAML_get_object_item(tree, "peer ni");
4351
4352         if (ip2nets && (prim_nid || peer_nis)) {
4353                 rc = LUSTRE_CFG_RC_BAD_PARAM;
4354                 snprintf(err_str, sizeof(err_str),
4355                          "ip2nets can not be specified along side prim_nid"
4356                          " or peer ni fields");
4357                 cYAML_build_error(rc, (seq_no) ? seq_no->cy_valueint : -1,
4358                                   ADD_CMD, "peer", err_str, err_rc);
4359                 return rc;
4360         }
4361
4362         if (!mr)
4363                 mr_value = true;
4364         else {
4365                 if (!mr->cy_valuestring || !strcmp(mr->cy_valuestring, "True"))
4366                         mr_value = true;
4367                 else if (!strcmp(mr->cy_valuestring, "False"))
4368                         mr_value = false;
4369                 else {
4370                         rc = LUSTRE_CFG_RC_BAD_PARAM;
4371                         snprintf(err_str, sizeof(err_str), "Bad MR value");
4372                         cYAML_build_error(rc, (seq_no) ? seq_no->cy_valueint : -1,
4373                                           ADD_CMD, "peer", err_str, err_rc);
4374                         return rc;
4375                 }
4376         }
4377
4378         num = yaml_copy_peer_nids((ip2nets) ? ip2nets : peer_nis, &nids,
4379                                   (prim_nid) ? prim_nid->cy_valuestring : NULL,
4380                                    false);
4381
4382         if (num < 0) {
4383                 snprintf(err_str, sizeof(err_str),
4384                          "error copying nids from YAML block");
4385                 cYAML_build_error(num, (seq_no) ? seq_no->cy_valueint : -1,
4386                                   ADD_CMD, "peer", err_str, err_rc);
4387                 return num;
4388         }
4389
4390         rc = lustre_lnet_config_peer_nid((prim_nid) ? prim_nid->cy_valuestring : NULL,
4391                                          nids, num, mr_value,
4392                                          (ip2nets) ? true : false,
4393                                          (seq_no) ? seq_no->cy_valueint : -1,
4394                                          err_rc);
4395
4396         yaml_free_string_array(nids, num);
4397         return rc;
4398 }
4399
4400 static int handle_yaml_del_peer(struct cYAML *tree, struct cYAML **show_rc,
4401                                 struct cYAML **err_rc)
4402 {
4403         char **nids = NULL;
4404         int num, rc;
4405         struct cYAML *seq_no, *prim_nid, *ip2nets, *peer_nis;
4406         char err_str[LNET_MAX_STR_LEN];
4407
4408         seq_no = cYAML_get_object_item(tree, "seq_no");
4409         prim_nid = cYAML_get_object_item(tree, "primary nid");
4410         ip2nets = cYAML_get_object_item(tree, "ip2nets");
4411         peer_nis = cYAML_get_object_item(tree, "peer ni");
4412
4413         if (ip2nets && (prim_nid || peer_nis)) {
4414                 rc = LUSTRE_CFG_RC_BAD_PARAM;
4415                 snprintf(err_str, sizeof(err_str),
4416                          "ip2nets can not be specified along side prim_nid"
4417                          " or peer ni fields");
4418                 cYAML_build_error(rc, (seq_no) ? seq_no->cy_valueint : -1,
4419                                   DEL_CMD, "peer", err_str, err_rc);
4420                 return rc;
4421         }
4422
4423         num = yaml_copy_peer_nids((ip2nets) ? ip2nets : peer_nis , &nids,
4424                                   (prim_nid) ? prim_nid->cy_valuestring : NULL,
4425                                   true);
4426         if (num < 0) {
4427                 snprintf(err_str, sizeof(err_str),
4428                          "error copying nids from YAML block");
4429                 cYAML_build_error(num, (seq_no) ? seq_no->cy_valueint : -1,
4430                                   ADD_CMD, "peer", err_str, err_rc);
4431                 return num;
4432         }
4433
4434         rc = lustre_lnet_del_peer_nid((prim_nid) ? prim_nid->cy_valuestring : NULL,
4435                                       nids, num, (ip2nets) ? true : false,
4436                                       (seq_no) ? seq_no->cy_valueint : -1,
4437                                       err_rc);
4438
4439         yaml_free_string_array(nids, num);
4440         return rc;
4441 }
4442
4443 static int handle_yaml_config_buffers(struct cYAML *tree,
4444                                       struct cYAML **show_rc,
4445                                       struct cYAML **err_rc)
4446 {
4447         int rc;
4448         struct cYAML *tiny, *small, *large, *seq_no;
4449
4450         tiny = cYAML_get_object_item(tree, "tiny");
4451         small = cYAML_get_object_item(tree, "small");
4452         large = cYAML_get_object_item(tree, "large");
4453         seq_no = cYAML_get_object_item(tree, "seq_no");
4454
4455         rc = lustre_lnet_config_buffers((tiny) ? tiny->cy_valueint : -1,
4456                                         (small) ? small->cy_valueint : -1,
4457                                         (large) ? large->cy_valueint : -1,
4458                                         (seq_no) ? seq_no->cy_valueint : -1,
4459                                         err_rc);
4460
4461         return rc;
4462 }
4463
4464 static int handle_yaml_config_routing(struct cYAML *tree,
4465                                       struct cYAML **show_rc,
4466                                       struct cYAML **err_rc)
4467 {
4468         int rc = LUSTRE_CFG_RC_NO_ERR;
4469         struct cYAML *seq_no, *enable;
4470
4471         seq_no = cYAML_get_object_item(tree, "seq_no");
4472         enable = cYAML_get_object_item(tree, "enable");
4473
4474         if (enable) {
4475                 rc = lustre_lnet_enable_routing(enable->cy_valueint,
4476                                                 (seq_no) ?
4477                                                     seq_no->cy_valueint : -1,
4478                                                 err_rc);
4479         }
4480
4481         return rc;
4482 }
4483
4484 static int handle_yaml_del_route(struct cYAML *tree, struct cYAML **show_rc,
4485                                  struct cYAML **err_rc)
4486 {
4487         struct cYAML *net;
4488         struct cYAML *gw;
4489         struct cYAML *seq_no;
4490
4491         net = cYAML_get_object_item(tree, "net");
4492         gw = cYAML_get_object_item(tree, "gateway");
4493         seq_no = cYAML_get_object_item(tree, "seq_no");
4494
4495         return lustre_lnet_del_route((net) ? net->cy_valuestring : NULL,
4496                                      (gw) ? gw->cy_valuestring : NULL,
4497                                      (seq_no) ? seq_no->cy_valueint : -1,
4498                                      err_rc);
4499 }
4500
4501 static int handle_yaml_del_routing(struct cYAML *tree, struct cYAML **show_rc,
4502                                    struct cYAML **err_rc)
4503 {
4504         struct cYAML *seq_no;
4505
4506         seq_no = cYAML_get_object_item(tree, "seq_no");
4507
4508         return lustre_lnet_enable_routing(0, (seq_no) ?
4509                                                 seq_no->cy_valueint : -1,
4510                                         err_rc);
4511 }
4512
4513 static int handle_yaml_show_route(struct cYAML *tree, struct cYAML **show_rc,
4514                                   struct cYAML **err_rc)
4515 {
4516         struct cYAML *net;
4517         struct cYAML *gw;
4518         struct cYAML *hop;
4519         struct cYAML *prio;
4520         struct cYAML *detail;
4521         struct cYAML *seq_no;
4522
4523         net = cYAML_get_object_item(tree, "net");
4524         gw = cYAML_get_object_item(tree, "gateway");
4525         hop = cYAML_get_object_item(tree, "hop");
4526         prio = cYAML_get_object_item(tree, "priority");
4527         detail = cYAML_get_object_item(tree, "detail");
4528         seq_no = cYAML_get_object_item(tree, "seq_no");
4529
4530         return lustre_lnet_show_route((net) ? net->cy_valuestring : NULL,
4531                                       (gw) ? gw->cy_valuestring : NULL,
4532                                       (hop) ? hop->cy_valueint : -1,
4533                                       (prio) ? prio->cy_valueint : -1,
4534                                       (detail) ? detail->cy_valueint : 0,
4535                                       (seq_no) ? seq_no->cy_valueint : -1,
4536                                       show_rc, err_rc, false);
4537 }
4538
4539 static int handle_yaml_show_net(struct cYAML *tree, struct cYAML **show_rc,
4540                                 struct cYAML **err_rc)
4541 {
4542         struct cYAML *net, *detail, *seq_no;
4543
4544         net = cYAML_get_object_item(tree, "net");
4545         detail = cYAML_get_object_item(tree, "detail");
4546         seq_no = cYAML_get_object_item(tree, "seq_no");
4547
4548         return lustre_lnet_show_net((net) ? net->cy_valuestring : NULL,
4549                                     (detail) ? detail->cy_valueint : 0,
4550                                     (seq_no) ? seq_no->cy_valueint : -1,
4551                                     show_rc, err_rc, false);
4552 }
4553
4554 static int handle_yaml_show_routing(struct cYAML *tree, struct cYAML **show_rc,
4555                                     struct cYAML **err_rc)
4556 {
4557         struct cYAML *seq_no;
4558
4559         seq_no = cYAML_get_object_item(tree, "seq_no");
4560
4561         return lustre_lnet_show_routing((seq_no) ? seq_no->cy_valueint : -1,
4562                                         show_rc, err_rc, false);
4563 }
4564
4565 static int handle_yaml_show_peers(struct cYAML *tree, struct cYAML **show_rc,
4566                                   struct cYAML **err_rc)
4567 {
4568         struct cYAML *seq_no, *nid, *detail;
4569
4570         seq_no = cYAML_get_object_item(tree, "seq_no");
4571         detail = cYAML_get_object_item(tree, "detail");
4572         nid = cYAML_get_object_item(tree, "nid");
4573
4574         return lustre_lnet_show_peer((nid) ? nid->cy_valuestring : NULL,
4575                                      (detail) ? detail->cy_valueint : 0,
4576                                      (seq_no) ? seq_no->cy_valueint : -1,
4577                                      show_rc, err_rc, false);
4578 }
4579
4580 static int handle_yaml_show_stats(struct cYAML *tree, struct cYAML **show_rc,
4581                                   struct cYAML **err_rc)
4582 {
4583         struct cYAML *seq_no;
4584
4585         seq_no = cYAML_get_object_item(tree, "seq_no");
4586
4587         return lustre_lnet_show_stats((seq_no) ? seq_no->cy_valueint : -1,
4588                                       show_rc, err_rc);
4589 }
4590
4591 static int handle_yaml_config_numa(struct cYAML *tree, struct cYAML **show_rc,
4592                                   struct cYAML **err_rc)
4593 {
4594         struct cYAML *seq_no, *range;
4595
4596         seq_no = cYAML_get_object_item(tree, "seq_no");
4597         range = cYAML_get_object_item(tree, "range");
4598
4599         return lustre_lnet_config_numa_range(range ? range->cy_valueint : -1,
4600                                              seq_no ? seq_no->cy_valueint : -1,
4601                                              err_rc);
4602 }
4603
4604 static int handle_yaml_del_numa(struct cYAML *tree, struct cYAML **show_rc,
4605                                struct cYAML **err_rc)
4606 {
4607         struct cYAML *seq_no;
4608
4609         seq_no = cYAML_get_object_item(tree, "seq_no");
4610
4611         return lustre_lnet_config_numa_range(0, seq_no ? seq_no->cy_valueint : -1,
4612                                              err_rc);
4613 }
4614
4615 static int handle_yaml_show_numa(struct cYAML *tree, struct cYAML **show_rc,
4616                                 struct cYAML **err_rc)
4617 {
4618         struct cYAML *seq_no;
4619
4620         seq_no = cYAML_get_object_item(tree, "seq_no");
4621
4622         return lustre_lnet_show_numa_range(seq_no ? seq_no->cy_valueint : -1,
4623                                            show_rc, err_rc);
4624 }
4625
4626 static int handle_yaml_config_global_settings(struct cYAML *tree,
4627                                               struct cYAML **show_rc,
4628                                               struct cYAML **err_rc)
4629 {
4630         struct cYAML *max_intf, *numa, *discovery, *retry, *tto, *seq_no,
4631                      *sen, *recov, *drop_asym_route;
4632         int rc = 0;
4633
4634         seq_no = cYAML_get_object_item(tree, "seq_no");
4635         max_intf = cYAML_get_object_item(tree, "max_intf");
4636         if (max_intf)
4637                 rc = lustre_lnet_config_max_intf(max_intf->cy_valueint,
4638                                                  seq_no ? seq_no->cy_valueint
4639                                                         : -1,
4640                                                  err_rc);
4641
4642         numa = cYAML_get_object_item(tree, "numa_range");
4643         if (numa)
4644                 rc = lustre_lnet_config_numa_range(numa->cy_valueint,
4645                                                    seq_no ? seq_no->cy_valueint
4646                                                         : -1,
4647                                                    err_rc);
4648
4649         discovery = cYAML_get_object_item(tree, "discovery");
4650         if (discovery)
4651                 rc = lustre_lnet_config_discovery(discovery->cy_valueint,
4652                                                   seq_no ? seq_no->cy_valueint
4653                                                         : -1,
4654                                                   err_rc);
4655
4656         drop_asym_route = cYAML_get_object_item(tree, "drop_asym_route");
4657         if (drop_asym_route)
4658                 rc = lustre_lnet_config_drop_asym_route(
4659                         drop_asym_route->cy_valueint,
4660                         seq_no ? seq_no->cy_valueint : -1,
4661                         err_rc);
4662
4663         retry = cYAML_get_object_item(tree, "retry_count");
4664         if (retry)
4665                 rc = lustre_lnet_config_retry_count(retry->cy_valueint,
4666                                                     seq_no ? seq_no->cy_valueint
4667                                                         : -1,
4668                                                     err_rc);
4669
4670         tto = cYAML_get_object_item(tree, "transaction_timeout");
4671         if (tto)
4672                 rc = lustre_lnet_config_transaction_to(tto->cy_valueint,
4673                                                        seq_no ? seq_no->cy_valueint
4674                                                                 : -1,
4675                                                        err_rc);
4676
4677         sen = cYAML_get_object_item(tree, "health_sensitivity");
4678         if (sen)
4679                 rc = lustre_lnet_config_hsensitivity(sen->cy_valueint,
4680                                                      seq_no ? seq_no->cy_valueint
4681                                                         : -1,
4682                                                      err_rc);
4683
4684         recov = cYAML_get_object_item(tree, "recovery_interval");
4685         if (recov)
4686                 rc = lustre_lnet_config_recov_intrv(recov->cy_valueint,
4687                                                     seq_no ? seq_no->cy_valueint
4688                                                         : -1,
4689                                                     err_rc);
4690
4691         return rc;
4692 }
4693
4694 static int handle_yaml_del_global_settings(struct cYAML *tree,
4695                                            struct cYAML **show_rc,
4696                                            struct cYAML **err_rc)
4697 {
4698         struct cYAML *max_intf, *numa, *discovery, *seq_no, *drop_asym_route;
4699         int rc = 0;
4700
4701         seq_no = cYAML_get_object_item(tree, "seq_no");
4702         max_intf = cYAML_get_object_item(tree, "max_intf");
4703         if (max_intf)
4704                 rc = lustre_lnet_config_max_intf(LNET_INTERFACES_MAX_DEFAULT,
4705                                                  seq_no ? seq_no->cy_valueint
4706                                                         : -1,
4707                                                  err_rc);
4708
4709         numa = cYAML_get_object_item(tree, "numa_range");
4710         if (numa)
4711                 rc = lustre_lnet_config_numa_range(0,
4712                                                    seq_no ? seq_no->cy_valueint
4713                                                         : -1,
4714                                                    err_rc);
4715
4716         /* peer discovery is enabled by default */
4717         discovery = cYAML_get_object_item(tree, "discovery");
4718         if (discovery)
4719                 rc = lustre_lnet_config_discovery(1,
4720                                                   seq_no ? seq_no->cy_valueint
4721                                                         : -1,
4722                                                   err_rc);
4723
4724         /* asymmetrical route messages are accepted by default */
4725         drop_asym_route = cYAML_get_object_item(tree, "drop_asym_route");
4726         if (drop_asym_route)
4727                 rc = lustre_lnet_config_drop_asym_route(
4728                         0, seq_no ? seq_no->cy_valueint : -1, err_rc);
4729
4730         return rc;
4731 }
4732
4733 static int handle_yaml_show_global_settings(struct cYAML *tree,
4734                                             struct cYAML **show_rc,
4735                                             struct cYAML **err_rc)
4736 {
4737         struct cYAML *max_intf, *numa, *discovery, *retry, *tto, *seq_no,
4738                      *sen, *recov, *drop_asym_route;
4739         int rc = 0;
4740
4741         seq_no = cYAML_get_object_item(tree, "seq_no");
4742         max_intf = cYAML_get_object_item(tree, "max_intf");
4743         if (max_intf)
4744                 rc = lustre_lnet_show_max_intf(seq_no ? seq_no->cy_valueint
4745                                                         : -1,
4746                                                 show_rc, err_rc);
4747
4748         numa = cYAML_get_object_item(tree, "numa_range");
4749         if (numa)
4750                 rc = lustre_lnet_show_numa_range(seq_no ? seq_no->cy_valueint
4751                                                         : -1,
4752                                                  show_rc, err_rc);
4753
4754         discovery = cYAML_get_object_item(tree, "discovery");
4755         if (discovery)
4756                 rc = lustre_lnet_show_discovery(seq_no ? seq_no->cy_valueint
4757                                                         : -1,
4758                                                 show_rc, err_rc);
4759
4760         drop_asym_route = cYAML_get_object_item(tree, "drop_asym_route");
4761         if (drop_asym_route)
4762                 rc = lustre_lnet_show_drop_asym_route(
4763                         seq_no ? seq_no->cy_valueint : -1,
4764                         show_rc, err_rc);
4765
4766         retry = cYAML_get_object_item(tree, "retry_count");
4767         if (retry)
4768                 rc = lustre_lnet_show_retry_count(seq_no ? seq_no->cy_valueint
4769                                                         : -1,
4770                                                   show_rc, err_rc);
4771
4772         tto = cYAML_get_object_item(tree, "transaction_timeout");
4773         if (tto)
4774                 rc = lustre_lnet_show_transaction_to(seq_no ? seq_no->cy_valueint
4775                                                         : -1,
4776                                                      show_rc, err_rc);
4777
4778         sen = cYAML_get_object_item(tree, "health_sensitivity");
4779         if (sen)
4780                 rc = lustre_lnet_show_hsensitivity(seq_no ? seq_no->cy_valueint
4781                                                         : -1,
4782                                                      show_rc, err_rc);
4783
4784         recov = cYAML_get_object_item(tree, "recovery_interval");
4785         if (recov)
4786                 rc = lustre_lnet_show_recov_intrv(seq_no ? seq_no->cy_valueint
4787                                                         : -1,
4788                                                   show_rc, err_rc);
4789
4790         return rc;
4791 }
4792
4793 static int handle_yaml_ping(struct cYAML *tree, struct cYAML **show_rc,
4794                             struct cYAML **err_rc)
4795 {
4796         struct cYAML *seq_no, *nid, *timeout;
4797
4798         seq_no = cYAML_get_object_item(tree, "seq_no");
4799         nid = cYAML_get_object_item(tree, "primary nid");
4800         timeout = cYAML_get_object_item(tree, "timeout");
4801
4802         return lustre_lnet_ping_nid((nid) ? nid->cy_valuestring : NULL,
4803                                     (timeout) ? timeout->cy_valueint : 1000,
4804                                     (seq_no) ? seq_no->cy_valueint : -1,
4805                                     show_rc, err_rc);
4806 }
4807
4808 static int handle_yaml_discover(struct cYAML *tree, struct cYAML **show_rc,
4809                                 struct cYAML **err_rc)
4810 {
4811         struct cYAML *seq_no, *nid, *force;
4812
4813         seq_no = cYAML_get_object_item(tree, "seq_no");
4814         nid = cYAML_get_object_item(tree, "primary nid");
4815         force = cYAML_get_object_item(tree, "force");
4816
4817         return lustre_lnet_discover_nid((nid) ? nid->cy_valuestring : NULL,
4818                                         (force) ? force->cy_valueint : 0,
4819                                         (seq_no) ? seq_no->cy_valueint : -1,
4820                                         show_rc, err_rc);
4821 }
4822
4823 static int handle_yaml_no_op()
4824 {
4825         return LUSTRE_CFG_RC_NO_ERR;
4826 }
4827
4828 struct lookup_cmd_hdlr_tbl {
4829         char *name;
4830         cmd_handler_t cb;
4831 };
4832
4833 static struct lookup_cmd_hdlr_tbl lookup_config_tbl[] = {
4834         { .name = "route",      .cb = handle_yaml_config_route },
4835         { .name = "net",        .cb = handle_yaml_config_ni },
4836         { .name = "ip2nets",    .cb = handle_yaml_config_ip2nets },
4837         { .name = "peer",       .cb = handle_yaml_config_peer },
4838         { .name = "routing",    .cb = handle_yaml_config_routing },
4839         { .name = "buffers",    .cb = handle_yaml_config_buffers },
4840         { .name = "statistics", .cb = handle_yaml_no_op },
4841         { .name = "global",     .cb = handle_yaml_config_global_settings},
4842         { .name = "numa",       .cb = handle_yaml_config_numa },
4843         { .name = "ping",       .cb = handle_yaml_no_op },
4844         { .name = "discover",   .cb = handle_yaml_no_op },
4845         { .name = NULL } };
4846
4847 static struct lookup_cmd_hdlr_tbl lookup_del_tbl[] = {
4848         { .name = "route",      .cb = handle_yaml_del_route },
4849         { .name = "net",        .cb = handle_yaml_del_ni },
4850         { .name = "ip2nets",    .cb = handle_yaml_no_op },
4851         { .name = "peer",       .cb = handle_yaml_del_peer },
4852         { .name = "routing",    .cb = handle_yaml_del_routing },
4853         { .name = "buffers",    .cb = handle_yaml_no_op },
4854         { .name = "statistics", .cb = handle_yaml_no_op },
4855         { .name = "global",     .cb = handle_yaml_del_global_settings},
4856         { .name = "numa",       .cb = handle_yaml_del_numa },
4857         { .name = "ping",       .cb = handle_yaml_no_op },
4858         { .name = "discover",   .cb = handle_yaml_no_op },
4859         { .name = NULL } };
4860
4861 static struct lookup_cmd_hdlr_tbl lookup_show_tbl[] = {
4862         { .name = "route",      .cb = handle_yaml_show_route },
4863         { .name = "net",        .cb = handle_yaml_show_net },
4864         { .name = "peer",       .cb = handle_yaml_show_peers },
4865         { .name = "ip2nets",    .cb = handle_yaml_no_op },
4866         { .name = "routing",    .cb = handle_yaml_show_routing },
4867         { .name = "buffers",    .cb = handle_yaml_show_routing },
4868         { .name = "statistics", .cb = handle_yaml_show_stats },
4869         { .name = "global",     .cb = handle_yaml_show_global_settings},
4870         { .name = "numa",       .cb = handle_yaml_show_numa },
4871         { .name = "ping",       .cb = handle_yaml_no_op },
4872         { .name = "discover",   .cb = handle_yaml_no_op },
4873         { .name = NULL } };
4874
4875 static struct lookup_cmd_hdlr_tbl lookup_exec_tbl[] = {
4876         { .name = "route",      .cb = handle_yaml_no_op },
4877         { .name = "net",        .cb = handle_yaml_no_op },
4878         { .name = "peer",       .cb = handle_yaml_no_op },
4879         { .name = "ip2nets",    .cb = handle_yaml_no_op },
4880         { .name = "routing",    .cb = handle_yaml_no_op },
4881         { .name = "buffers",    .cb = handle_yaml_no_op },
4882         { .name = "statistics", .cb = handle_yaml_no_op },
4883         { .name = "global",     .cb = handle_yaml_no_op },
4884         { .name = "numa",       .cb = handle_yaml_no_op },
4885         { .name = "ping",       .cb = handle_yaml_ping },
4886         { .name = "discover",   .cb = handle_yaml_discover },
4887         { .name = NULL } };
4888
4889 static cmd_handler_t lookup_fn(char *key,
4890                                struct lookup_cmd_hdlr_tbl *tbl)
4891 {
4892         int i;
4893         if (key == NULL)
4894                 return NULL;
4895
4896         for (i = 0; tbl[i].name != NULL; i++) {
4897                 if (strncmp(key, tbl[i].name, strlen(tbl[i].name)) == 0)
4898                         return tbl[i].cb;
4899         }
4900
4901         return NULL;
4902 }
4903
4904 static int lustre_yaml_cb_helper(char *f, struct lookup_cmd_hdlr_tbl *table,
4905                                  struct cYAML **show_rc, struct cYAML **err_rc)
4906 {
4907         struct cYAML *tree, *item = NULL, *head, *child;
4908         cmd_handler_t cb;
4909         char err_str[LNET_MAX_STR_LEN];
4910         int rc = LUSTRE_CFG_RC_NO_ERR, return_rc = LUSTRE_CFG_RC_NO_ERR;
4911
4912         tree = cYAML_build_tree(f, NULL, 0, err_rc, false);
4913         if (tree == NULL)
4914                 return LUSTRE_CFG_RC_BAD_PARAM;
4915
4916         child = tree->cy_child;
4917         while (child != NULL) {
4918                 cb = lookup_fn(child->cy_string, table);
4919                 if (cb == NULL) {
4920                         snprintf(err_str, sizeof(err_str),
4921                                 "\"call back for '%s' not found\"",
4922                                 child->cy_string);
4923                         cYAML_build_error(LUSTRE_CFG_RC_BAD_PARAM, -1,
4924                                         "yaml", "helper", err_str, err_rc);
4925                         goto out;
4926                 }
4927
4928                 if (cYAML_is_sequence(child)) {
4929                         while ((head = cYAML_get_next_seq_item(child, &item))
4930                                != NULL) {
4931                                 rc = cb(head, show_rc, err_rc);
4932                                 if (rc != LUSTRE_CFG_RC_NO_ERR)
4933                                         return_rc = rc;
4934                         }
4935                 } else {
4936                         rc = cb(child, show_rc, err_rc);
4937                         if (rc != LUSTRE_CFG_RC_NO_ERR)
4938                                 return_rc = rc;
4939                 }
4940                 item = NULL;
4941                 child = child->cy_next;
4942         }
4943
4944 out:
4945         cYAML_free_tree(tree);
4946
4947         return return_rc;
4948 }
4949
4950 int lustre_yaml_config(char *f, struct cYAML **err_rc)
4951 {
4952         return lustre_yaml_cb_helper(f, lookup_config_tbl,
4953                                      NULL, err_rc);
4954 }
4955
4956 int lustre_yaml_del(char *f, struct cYAML **err_rc)
4957 {
4958         return lustre_yaml_cb_helper(f, lookup_del_tbl,
4959                                      NULL, err_rc);
4960 }
4961
4962 int lustre_yaml_show(char *f, struct cYAML **show_rc, struct cYAML **err_rc)
4963 {
4964         return lustre_yaml_cb_helper(f, lookup_show_tbl,
4965                                      show_rc, err_rc);
4966 }
4967
4968 int lustre_yaml_exec(char *f, struct cYAML **show_rc, struct cYAML **err_rc)
4969 {
4970         return lustre_yaml_cb_helper(f, lookup_exec_tbl,
4971                                      show_rc, err_rc);
4972 }