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
1401
1402         if (nw == NULL || nids == NULL) {
1403                 snprintf(err_str, str_len,
1404                          "\"unexpected parameters to lustre_lnet_intf2nids()\"");
1405                 err_str[str_len - 1] = '\0';
1406                 return LUSTRE_CFG_RC_BAD_PARAM;
1407         }
1408
1409         if (LNET_NETTYP(nw->nw_id) == GNILND) {
1410                 count = 1;
1411         } else {
1412                 list_for_each_entry(intf, &nw->nw_intflist, intf_on_network)
1413                         count++;
1414         }
1415
1416         *nids = calloc(count, sizeof(lnet_nid_t));
1417         if (*nids == NULL) {
1418                 snprintf(err_str, str_len,
1419                          "\"out of memory\"");
1420                 err_str[str_len - 1] = '\0';
1421                 return LUSTRE_CFG_RC_OUT_OF_MEM;
1422         }
1423         /*
1424          * special case the GNI interface since it doesn't have an IP
1425          * address. The assumption is that there can only be one GNI
1426          * interface in the system. No interface name is provided.
1427          */
1428         if (LNET_NETTYP(nw->nw_id) == GNILND) {
1429                 rc = read_sysfs_file(gni_nid_path, "nid", val,
1430                                 1, sizeof(val));
1431                 if (rc) {
1432                         snprintf(err_str, str_len,
1433                                  "\"cannot read gni nid\"");
1434                         err_str[str_len - 1] = '\0';
1435                         goto failed;
1436                 }
1437                 gni_num = atoi(val);
1438
1439                 (*nids)[i] = LNET_MKNID(nw->nw_id, gni_num);
1440
1441                 goto out;
1442         }
1443
1444         /* look at the other interfaces */
1445         list_for_each_entry(intf, &nw->nw_intflist, intf_on_network) {
1446                 rc = lustre_lnet_queryip(intf, &ip);
1447                 if (rc != LUSTRE_CFG_RC_NO_ERR) {
1448                         snprintf(err_str, str_len,
1449                                  "\"couldn't query intf %s\"", intf->intf_name);
1450                         err_str[str_len - 1] = '\0';
1451                         goto failed;
1452                 }
1453                 (*nids)[i] = LNET_MKNID(nw->nw_id, ip);
1454                 i++;
1455         }
1456
1457 out:
1458         *nnids = count;
1459
1460         return 0;
1461
1462 failed:
1463         free(*nids);
1464         *nids = NULL;
1465         return rc;
1466 }
1467
1468 /*
1469  * called repeatedly until a match or no more ip range
1470  * What do you have?
1471  *      ip_range expression
1472  *      interface list with all the interface names.
1473  *      all the interfaces in the system.
1474  *
1475  *      try to match the ip_range expr to one of the interfaces' IPs in
1476  *      the system. If we hit a patch for an interface. Check if that
1477  *      interface name is in the list.
1478  *
1479  *      If there are more than one interface in the list, then make sure
1480  *      that the IPs for all of these interfaces match the ip ranges
1481  *      given.
1482  *
1483  *      for each interface in intf_list
1484  *              look up the intf name in ifa
1485  *              if not there then no match
1486  *              check ip obtained from ifa against a match to any of the
1487  *              ip_ranges given.
1488  *              If no match, then fail
1489  *
1490  *      The result is that all the interfaces have to match.
1491  */
1492 int lustre_lnet_match_ip_to_intf(struct ifaddrs *ifa,
1493                                  struct list_head *intf_list,
1494                                  struct list_head *ip_ranges)
1495 {
1496         int rc;
1497         __u32 ip;
1498         struct lnet_dlc_intf_descr *intf_descr, *tmp;
1499         struct ifaddrs *ifaddr = ifa;
1500         struct lustre_lnet_ip_range_descr *ip_range;
1501         int family;
1502
1503         /*
1504          * if there are no explicit interfaces, and no ip ranges, then
1505          * configure the first tcp interface we encounter.
1506          */
1507         if (list_empty(intf_list) && list_empty(ip_ranges)) {
1508                 for (ifaddr = ifa; ifaddr != NULL; ifaddr = ifaddr->ifa_next) {
1509                         if (ifaddr->ifa_addr == NULL)
1510                                 continue;
1511
1512                         if ((ifaddr->ifa_flags & IFF_UP) == 0)
1513                                 continue;
1514
1515                         family = ifaddr->ifa_addr->sa_family;
1516                         if (family == AF_INET &&
1517                             strcmp(ifaddr->ifa_name, "lo") != 0) {
1518                                 rc = lustre_lnet_add_intf_descr
1519                                         (intf_list, ifaddr->ifa_name,
1520                                         strlen(ifaddr->ifa_name));
1521
1522                                 if (rc != LUSTRE_CFG_RC_NO_ERR)
1523                                         return rc;
1524
1525                                 return LUSTRE_CFG_RC_MATCH;
1526                         }
1527                 }
1528                 return LUSTRE_CFG_RC_NO_MATCH;
1529         }
1530
1531         /*
1532          * First interface which matches an IP pattern will be used
1533          */
1534         if (list_empty(intf_list)) {
1535                 /*
1536                  * no interfaces provided in the rule, but an ip range is
1537                  * provided, so try and match an interface to the ip
1538                  * range.
1539                  */
1540                 for (ifaddr = ifa; ifaddr != NULL; ifaddr = ifaddr->ifa_next) {
1541                         if (ifaddr->ifa_addr == NULL)
1542                                 continue;
1543
1544                         if ((ifaddr->ifa_flags & IFF_UP) == 0)
1545                                 continue;
1546
1547                         family = ifaddr->ifa_addr->sa_family;
1548                         if (family == AF_INET) {
1549                                 ip = ((struct sockaddr_in *)ifaddr->ifa_addr)->
1550                                         sin_addr.s_addr;
1551
1552                                 list_for_each_entry(ip_range, ip_ranges,
1553                                                     ipr_entry) {
1554                                         rc = cfs_ip_addr_match(bswap_32(ip),
1555                                                         &ip_range->ipr_expr);
1556                                         if (!rc)
1557                                                 continue;
1558
1559                                         rc = lustre_lnet_add_intf_descr
1560                                           (intf_list, ifaddr->ifa_name,
1561                                            strlen(ifaddr->ifa_name));
1562
1563                                         if (rc != LUSTRE_CFG_RC_NO_ERR)
1564                                                 return rc;
1565                                 }
1566                         }
1567                 }
1568
1569                 if (!list_empty(intf_list))
1570                         return LUSTRE_CFG_RC_MATCH;
1571
1572                 return LUSTRE_CFG_RC_NO_MATCH;
1573         }
1574
1575         /*
1576          * If an interface is explicitly specified the ip-range might or
1577          * might not be specified. if specified the interface needs to match the
1578          * ip-range. If no ip-range then the interfaces are
1579          * automatically matched if they are all up.
1580          * If > 1 interfaces all the interfaces must match for the NI to
1581          * be configured.
1582          */
1583         list_for_each_entry_safe(intf_descr, tmp, intf_list, intf_on_network) {
1584                 for (ifaddr = ifa; ifaddr != NULL; ifaddr = ifaddr->ifa_next) {
1585                         if (ifaddr->ifa_addr == NULL)
1586                                 continue;
1587
1588                         family = ifaddr->ifa_addr->sa_family;
1589                         if (family == AF_INET &&
1590                             strcmp(intf_descr->intf_name,
1591                                    ifaddr->ifa_name) == 0)
1592                                 break;
1593                 }
1594
1595                 if (ifaddr == NULL) {
1596                         list_del(&intf_descr->intf_on_network);
1597                         free_intf_descr(intf_descr);
1598                         continue;
1599                 }
1600
1601                 if ((ifaddr->ifa_flags & IFF_UP) == 0) {
1602                         list_del(&intf_descr->intf_on_network);
1603                         free_intf_descr(intf_descr);
1604                         continue;
1605                 }
1606
1607                 ip = ((struct sockaddr_in *)ifaddr->ifa_addr)->sin_addr.s_addr;
1608
1609                 rc = 1;
1610                 list_for_each_entry(ip_range, ip_ranges, ipr_entry) {
1611                         rc = cfs_ip_addr_match(bswap_32(ip), &ip_range->ipr_expr);
1612                         if (rc)
1613                                 break;
1614                 }
1615
1616                 if (!rc) {
1617                         /* no match for this interface */
1618                         list_del(&intf_descr->intf_on_network);
1619                         free_intf_descr(intf_descr);
1620                 }
1621         }
1622
1623         return LUSTRE_CFG_RC_MATCH;
1624 }
1625
1626 static int lustre_lnet_resolve_ip2nets_rule(struct lustre_lnet_ip2nets *ip2nets,
1627                                             lnet_nid_t **nids, __u32 *nnids,
1628                                             char *err_str, size_t str_len)
1629 {
1630         struct ifaddrs *ifa;
1631         int rc = LUSTRE_CFG_RC_NO_ERR;
1632
1633         rc = getifaddrs(&ifa);
1634         if (rc < 0) {
1635                 snprintf(err_str, str_len,
1636                          "\"failed to get interface addresses: %d\"", -errno);
1637                 err_str[str_len - 1] = '\0';
1638                 return -errno;
1639         }
1640
1641         rc = lustre_lnet_match_ip_to_intf(ifa,
1642                                           &ip2nets->ip2nets_net.nw_intflist,
1643                                           &ip2nets->ip2nets_ip_ranges);
1644         if (rc != LUSTRE_CFG_RC_MATCH) {
1645                 snprintf(err_str, str_len,
1646                          "\"couldn't match ip to existing interfaces\"");
1647                 err_str[str_len - 1] = '\0';
1648                 freeifaddrs(ifa);
1649                 return rc;
1650         }
1651
1652         rc = lustre_lnet_intf2nids(&ip2nets->ip2nets_net, nids, nnids,
1653                                    err_str, sizeof(err_str));
1654         if (rc != LUSTRE_CFG_RC_NO_ERR) {
1655                 *nids = NULL;
1656                 *nnids = 0;
1657         }
1658
1659         freeifaddrs(ifa);
1660
1661         return rc;
1662 }
1663
1664 static int
1665 lustre_lnet_ioctl_config_ni(struct list_head *intf_list,
1666                             struct lnet_ioctl_config_lnd_tunables *tunables,
1667                             struct cfs_expr_list *global_cpts,
1668                             lnet_nid_t *nids, char *err_str)
1669 {
1670         char *data;
1671         struct lnet_ioctl_config_ni *conf;
1672         struct lnet_ioctl_config_lnd_tunables *tun = NULL;
1673         int rc = LUSTRE_CFG_RC_NO_ERR, i = 0;
1674         size_t len;
1675         int count;
1676         struct lnet_dlc_intf_descr *intf_descr;
1677         __u32 *cpt_array;
1678         struct cfs_expr_list *cpt_expr;
1679
1680         list_for_each_entry(intf_descr, intf_list,
1681                             intf_on_network) {
1682                 if (tunables != NULL)
1683                         len = sizeof(struct lnet_ioctl_config_ni) +
1684                               sizeof(struct lnet_ioctl_config_lnd_tunables);
1685                 else
1686                         len = sizeof(struct lnet_ioctl_config_ni);
1687
1688                 data = calloc(1, len);
1689                 if (!data)
1690                         return LUSTRE_CFG_RC_OUT_OF_MEM;
1691                 conf = (struct lnet_ioctl_config_ni*) data;
1692                 if (tunables != NULL)
1693                         tun = (struct lnet_ioctl_config_lnd_tunables*)
1694                                 conf->lic_bulk;
1695
1696                 LIBCFS_IOC_INIT_V2(*conf, lic_cfg_hdr);
1697                 conf->lic_cfg_hdr.ioc_len = len;
1698                 conf->lic_nid = nids[i];
1699                 strncpy(conf->lic_ni_intf[0], intf_descr->intf_name,
1700                         LNET_MAX_STR_LEN);
1701
1702                 if (intf_descr->cpt_expr != NULL)
1703                         cpt_expr = intf_descr->cpt_expr;
1704                 else if (global_cpts != NULL)
1705                         cpt_expr = global_cpts;
1706                 else
1707                         cpt_expr = NULL;
1708
1709                 if (cpt_expr != NULL) {
1710                         count = cfs_expr_list_values(cpt_expr,
1711                                                      LNET_MAX_SHOW_NUM_CPT,
1712                                                      &cpt_array);
1713                         if (count > 0) {
1714                                 memcpy(conf->lic_cpts, cpt_array,
1715                                        sizeof(cpt_array[0]) * LNET_MAX_STR_LEN);
1716                                 free(cpt_array);
1717                         } else {
1718                                 count = 0;
1719                         }
1720                 } else {
1721                         count = 0;
1722                 }
1723
1724                 conf->lic_ncpts = count;
1725
1726                 if (tunables != NULL)
1727                         memcpy(tun, tunables, sizeof(*tunables));
1728
1729                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_ADD_LOCAL_NI, data);
1730                 if (rc < 0) {
1731                         rc = -errno;
1732                         snprintf(err_str,
1733                                  LNET_MAX_STR_LEN,
1734                                  "\"cannot add network: %s\"", strerror(errno));
1735                         free(data);
1736                         return rc;
1737                 }
1738                 free(data);
1739                 i++;
1740         }
1741
1742         return LUSTRE_CFG_RC_NO_ERR;
1743 }
1744
1745 int
1746 lustre_lnet_config_ip2nets(struct lustre_lnet_ip2nets *ip2nets,
1747                            struct lnet_ioctl_config_lnd_tunables *tunables,
1748                            struct cfs_expr_list *global_cpts,
1749                            int seq_no, struct cYAML **err_rc)
1750 {
1751         lnet_nid_t *nids = NULL;
1752         __u32 nnids = 0;
1753         int rc;
1754         char err_str[LNET_MAX_STR_LEN];
1755
1756         snprintf(err_str, sizeof(err_str), "\"success\"");
1757
1758         if (!ip2nets) {
1759                 snprintf(err_str,
1760                          sizeof(err_str),
1761                          "\"incomplete ip2nets information\"");
1762                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1763                 goto out;
1764         }
1765
1766         /*
1767          * call below function to resolve the rules into a list of nids.
1768          * The memory is allocated in that function then freed here when
1769          * it's no longer needed.
1770          */
1771         rc = lustre_lnet_resolve_ip2nets_rule(ip2nets, &nids, &nnids, err_str,
1772                                               sizeof(err_str));
1773         if (rc != LUSTRE_CFG_RC_NO_ERR && rc != LUSTRE_CFG_RC_MATCH)
1774                 goto out;
1775
1776         if (list_empty(&ip2nets->ip2nets_net.nw_intflist)) {
1777                 snprintf(err_str, sizeof(err_str),
1778                          "\"no interfaces match ip2nets rules\"");
1779                 goto free_nids_out;
1780         }
1781
1782         rc = lustre_lnet_ioctl_config_ni(&ip2nets->ip2nets_net.nw_intflist,
1783                                          tunables, global_cpts, nids,
1784                                          err_str);
1785
1786 free_nids_out:
1787         free(nids);
1788
1789 out:
1790         cYAML_build_error(rc, seq_no, ADD_CMD, "ip2nets", err_str, err_rc);
1791         return rc;
1792 }
1793
1794 int lustre_lnet_config_ni(struct lnet_dlc_network_descr *nw_descr,
1795                           struct cfs_expr_list *global_cpts,
1796                           char *ip2net,
1797                           struct lnet_ioctl_config_lnd_tunables *tunables,
1798                           int seq_no, struct cYAML **err_rc)
1799 {
1800         char *data = NULL;
1801         struct lnet_ioctl_config_ni *conf;
1802         struct lnet_ioctl_config_lnd_tunables *tun = NULL;
1803         char buf[LNET_MAX_STR_LEN];
1804         int rc = LUSTRE_CFG_RC_NO_ERR;
1805         char err_str[LNET_MAX_STR_LEN];
1806         lnet_nid_t *nids = NULL;
1807         __u32 nnids = 0;
1808         size_t len;
1809         int count;
1810         struct lnet_dlc_intf_descr *intf_descr, *tmp;
1811         __u32 *cpt_array;
1812
1813         snprintf(err_str, sizeof(err_str), "\"success\"");
1814
1815         if (ip2net == NULL && (nw_descr == NULL || nw_descr->nw_id == 0 ||
1816             (list_empty(&nw_descr->nw_intflist) &&
1817              LNET_NETTYP(nw_descr->nw_id) != GNILND))) {
1818                 snprintf(err_str,
1819                          sizeof(err_str),
1820                          "\"missing mandatory parameters in NI config: '%s'\"",
1821                          (nw_descr == NULL) ? "network , interface" :
1822                          (nw_descr->nw_id == 0) ? "network" : "interface");
1823                 rc = LUSTRE_CFG_RC_MISSING_PARAM;
1824                 goto out;
1825         }
1826
1827         if (ip2net != NULL && strlen(ip2net) >= sizeof(buf)) {
1828                 snprintf(err_str,
1829                          sizeof(err_str),
1830                          "\"ip2net string too long %d\"",
1831                                 (int)strlen(ip2net));
1832                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
1833                 goto out;
1834         }
1835
1836         if (ip2net != NULL) {
1837                 if (tunables != NULL)
1838                         len = sizeof(struct lnet_ioctl_config_ni) +
1839                               sizeof(struct lnet_ioctl_config_lnd_tunables);
1840                 else
1841                         len = sizeof(struct lnet_ioctl_config_ni);
1842                 data = calloc(1, len);
1843                 if (!data) {
1844                         rc = LUSTRE_CFG_RC_OUT_OF_MEM;
1845                         goto out;
1846                 }
1847                 conf = (struct lnet_ioctl_config_ni*) data;
1848                 if (tunables != NULL)
1849                         tun = (struct lnet_ioctl_config_lnd_tunables*)
1850                                 (data + sizeof(*conf));
1851
1852                 LIBCFS_IOC_INIT_V2(*conf, lic_cfg_hdr);
1853                 conf->lic_cfg_hdr.ioc_len = len;
1854                 strncpy(conf->lic_legacy_ip2nets, ip2net,
1855                         LNET_MAX_STR_LEN);
1856
1857                 if (global_cpts != NULL) {
1858                         count = cfs_expr_list_values(global_cpts,
1859                                                      LNET_MAX_SHOW_NUM_CPT,
1860                                                      &cpt_array);
1861                         if (count > 0) {
1862                                 memcpy(conf->lic_cpts, cpt_array,
1863                                        sizeof(cpt_array[0]) * LNET_MAX_STR_LEN);
1864                                 free(cpt_array);
1865                         } else {
1866                                 count = 0;
1867                         }
1868                 } else {
1869                         count = 0;
1870                 }
1871
1872                 conf->lic_ncpts = count;
1873
1874                 if (tunables != NULL)
1875                         memcpy(tun, tunables, sizeof(*tunables));
1876
1877                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_ADD_LOCAL_NI, data);
1878                 if (rc < 0) {
1879                         rc = -errno;
1880                         snprintf(err_str,
1881                                 sizeof(err_str),
1882                                 "\"cannot add network: %s\"", strerror(errno));
1883                         goto out;
1884                 }
1885
1886                 goto out;
1887         }
1888
1889         if (LNET_NETTYP(nw_descr->nw_id) == LOLND) {
1890                 rc = LUSTRE_CFG_RC_NO_ERR;
1891                 goto out;
1892         }
1893
1894         if (nw_descr->nw_id == LNET_NIDNET(LNET_NID_ANY)) {
1895                 snprintf(err_str,
1896                         sizeof(err_str),
1897                         "\"cannot parse net '%s'\"",
1898                         libcfs_net2str(nw_descr->nw_id));
1899                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1900                 goto out;
1901         }
1902
1903         /*
1904          * special case the GNI since no interface name is expected
1905          */
1906         if (list_empty(&nw_descr->nw_intflist) &&
1907             (LNET_NETTYP(nw_descr->nw_id) != GNILND)) {
1908                 snprintf(err_str,
1909                         sizeof(err_str),
1910                         "\"no interface name provided\"");
1911                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1912                 goto out;
1913         }
1914
1915         rc = lustre_lnet_intf2nids(nw_descr, &nids, &nnids,
1916                                    err_str, sizeof(err_str));
1917         if (rc != 0) {
1918                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1919                 goto out;
1920         }
1921
1922         rc = lustre_lnet_ioctl_config_ni(&nw_descr->nw_intflist,
1923                                          tunables, global_cpts, nids,
1924                                          err_str);
1925
1926 out:
1927         if (nw_descr != NULL) {
1928                 list_for_each_entry_safe(intf_descr, tmp,
1929                                          &nw_descr->nw_intflist,
1930                                          intf_on_network) {
1931                         list_del(&intf_descr->intf_on_network);
1932                         free_intf_descr(intf_descr);
1933                 }
1934         }
1935
1936         cYAML_build_error(rc, seq_no, ADD_CMD, "net", err_str, err_rc);
1937
1938         if (nids)
1939                 free(nids);
1940
1941         if (data)
1942                 free(data);
1943
1944         return rc;
1945 }
1946
1947 int lustre_lnet_del_ni(struct lnet_dlc_network_descr *nw_descr,
1948                        int seq_no, struct cYAML **err_rc)
1949 {
1950         struct lnet_ioctl_config_ni data;
1951         int rc = LUSTRE_CFG_RC_NO_ERR, i;
1952         char err_str[LNET_MAX_STR_LEN];
1953         lnet_nid_t *nids = NULL;
1954         __u32 nnids = 0;
1955         struct lnet_dlc_intf_descr *intf_descr, *tmp;
1956
1957         snprintf(err_str, sizeof(err_str), "\"success\"");
1958
1959         if (nw_descr == NULL || nw_descr->nw_id == 0) {
1960                 snprintf(err_str,
1961                          sizeof(err_str),
1962                          "\"missing mandatory parameter in deleting NI: '%s'\"",
1963                          (nw_descr == NULL) ? "network , interface" :
1964                          (nw_descr->nw_id == 0) ? "network" : "interface");
1965                 rc = LUSTRE_CFG_RC_MISSING_PARAM;
1966                 goto out;
1967         }
1968
1969         if (LNET_NETTYP(nw_descr->nw_id) == LOLND)
1970                 return LUSTRE_CFG_RC_NO_ERR;
1971
1972         if (nw_descr->nw_id == LNET_NIDNET(LNET_NID_ANY)) {
1973                 snprintf(err_str,
1974                          sizeof(err_str),
1975                          "\"cannot parse net '%s'\"",
1976                          libcfs_net2str(nw_descr->nw_id));
1977                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1978                 goto out;
1979         }
1980
1981         rc = lustre_lnet_intf2nids(nw_descr, &nids, &nnids,
1982                                    err_str, sizeof(err_str));
1983         if (rc != 0) {
1984                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1985                 goto out;
1986         }
1987
1988         /*
1989          * no interfaces just the nw_id is specified
1990          */
1991         if (nnids == 0) {
1992                 nids = calloc(1, sizeof(*nids));
1993                 if (nids == NULL) {
1994                         snprintf(err_str, sizeof(err_str),
1995                                 "\"out of memory\"");
1996                         rc = LUSTRE_CFG_RC_OUT_OF_MEM;
1997                         goto out;
1998                 }
1999                 nids[0] = LNET_MKNID(nw_descr->nw_id, 0);
2000                 nnids = 1;
2001         }
2002
2003         for (i = 0; i < nnids; i++) {
2004                 LIBCFS_IOC_INIT_V2(data, lic_cfg_hdr);
2005                 data.lic_nid = nids[i];
2006
2007                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_DEL_LOCAL_NI, &data);
2008                 if (rc < 0) {
2009                         rc = -errno;
2010                         snprintf(err_str,
2011                                 sizeof(err_str),
2012                                 "\"cannot del network: %s\"", strerror(errno));
2013                 }
2014         }
2015
2016         list_for_each_entry_safe(intf_descr, tmp, &nw_descr->nw_intflist,
2017                                  intf_on_network) {
2018                 list_del(&intf_descr->intf_on_network);
2019                 free_intf_descr(intf_descr);
2020         }
2021
2022 out:
2023         cYAML_build_error(rc, seq_no, DEL_CMD, "net", err_str, err_rc);
2024
2025         if (nids != NULL)
2026                 free(nids);
2027
2028         return rc;
2029 }
2030
2031 static int
2032 lustre_lnet_config_healthv(int value, bool all, lnet_nid_t nid,
2033                            enum lnet_health_type type, char *name,
2034                            int seq_no, struct cYAML **err_rc)
2035 {
2036         struct lnet_ioctl_reset_health_cfg data;
2037         int rc = LUSTRE_CFG_RC_NO_ERR;
2038         char err_str[LNET_MAX_STR_LEN];
2039
2040         snprintf(err_str, sizeof(err_str), "\"success\"");
2041
2042         LIBCFS_IOC_INIT_V2(data, rh_hdr);
2043         data.rh_type = type;
2044         data.rh_all = all;
2045         data.rh_value = value;
2046         data.rh_nid = nid;
2047
2048         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_SET_HEALHV, &data);
2049         if (rc != 0) {
2050                 rc = -errno;
2051                 snprintf(err_str,
2052                          sizeof(err_str), "Can not configure health value: %s",
2053                          strerror(errno));
2054         }
2055
2056         cYAML_build_error(rc, seq_no, ADD_CMD, name, err_str, err_rc);
2057
2058         return rc;
2059 }
2060
2061 int lustre_lnet_config_ni_healthv(int value, bool all, char *ni_nid, int seq_no,
2062                                   struct cYAML **err_rc)
2063 {
2064         lnet_nid_t nid;
2065         if (ni_nid)
2066                 nid = libcfs_str2nid(ni_nid);
2067         else
2068                 nid = LNET_NID_ANY;
2069         return lustre_lnet_config_healthv(value, all, nid,
2070                                           LNET_HEALTH_TYPE_LOCAL_NI,
2071                                           "ni healthv", seq_no, err_rc);
2072 }
2073
2074 int lustre_lnet_config_peer_ni_healthv(int value, bool all, char *lpni_nid,
2075                                        int seq_no, struct cYAML **err_rc)
2076 {
2077         lnet_nid_t nid;
2078         if (lpni_nid)
2079                 nid = libcfs_str2nid(lpni_nid);
2080         else
2081                 nid = LNET_NID_ANY;
2082         return lustre_lnet_config_healthv(value, all, nid,
2083                                           LNET_HEALTH_TYPE_PEER_NI,
2084                                           "peer_ni healthv", seq_no, err_rc);
2085 }
2086
2087 static bool
2088 add_msg_stats_to_yaml_blk(struct cYAML *yaml,
2089                           struct lnet_ioctl_comm_count *counts)
2090 {
2091         if (cYAML_create_number(yaml, "put",
2092                                 counts->ico_put_count)
2093                                         == NULL)
2094                 return false;
2095         if (cYAML_create_number(yaml, "get",
2096                                 counts->ico_get_count)
2097                                         == NULL)
2098                 return false;
2099         if (cYAML_create_number(yaml, "reply",
2100                                 counts->ico_reply_count)
2101                                         == NULL)
2102                 return false;
2103         if (cYAML_create_number(yaml, "ack",
2104                                 counts->ico_ack_count)
2105                                         == NULL)
2106                 return false;
2107         if (cYAML_create_number(yaml, "hello",
2108                                 counts->ico_hello_count)
2109                                         == NULL)
2110                 return false;
2111
2112         return true;
2113 }
2114
2115 static struct lnet_ioctl_comm_count *
2116 get_counts(struct lnet_ioctl_element_msg_stats *msg_stats, int idx)
2117 {
2118         if (idx == 0)
2119                 return &msg_stats->im_send_stats;
2120         if (idx == 1)
2121                 return &msg_stats->im_recv_stats;
2122         if (idx == 2)
2123                 return &msg_stats->im_drop_stats;
2124
2125         return NULL;
2126 }
2127
2128 int lustre_lnet_show_net(char *nw, int detail, int seq_no,
2129                          struct cYAML **show_rc, struct cYAML **err_rc,
2130                          bool backup)
2131 {
2132         char *buf;
2133         struct lnet_ioctl_config_ni *ni_data;
2134         struct lnet_ioctl_config_lnd_tunables *lnd;
2135         struct lnet_ioctl_element_stats *stats;
2136         struct lnet_ioctl_element_msg_stats msg_stats;
2137         struct lnet_ioctl_local_ni_hstats hstats;
2138         __u32 net = LNET_NIDNET(LNET_NID_ANY);
2139         __u32 prev_net = LNET_NIDNET(LNET_NID_ANY);
2140         int rc = LUSTRE_CFG_RC_OUT_OF_MEM, i, j;
2141         int l_errno = 0;
2142         struct cYAML *root = NULL, *tunables = NULL,
2143                 *net_node = NULL, *interfaces = NULL,
2144                 *item = NULL, *first_seq = NULL,
2145                 *tmp = NULL, *statistics = NULL,
2146                 *yhstats = NULL;
2147         int str_buf_len = LNET_MAX_SHOW_NUM_CPT * 2;
2148         char str_buf[str_buf_len];
2149         char *pos;
2150         char err_str[LNET_MAX_STR_LEN];
2151         bool exist = false, new_net = true;
2152         int net_num = 0;
2153         size_t buf_size = sizeof(*ni_data) + sizeof(*lnd) + sizeof(*stats);
2154
2155         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
2156
2157         buf = calloc(1, buf_size);
2158         if (buf == NULL)
2159                 goto out;
2160
2161         ni_data = (struct lnet_ioctl_config_ni *)buf;
2162
2163         if (nw != NULL) {
2164                 net = libcfs_str2net(nw);
2165                 if (net == LNET_NIDNET(LNET_NID_ANY)) {
2166                         snprintf(err_str,
2167                                  sizeof(err_str),
2168                                  "\"cannot parse net '%s'\"", nw);
2169                         rc = LUSTRE_CFG_RC_BAD_PARAM;
2170                         goto out;
2171                 }
2172         }
2173
2174         root = cYAML_create_object(NULL, NULL);
2175         if (root == NULL)
2176                 goto out;
2177
2178         net_node = cYAML_create_seq(root, "net");
2179         if (net_node == NULL)
2180                 goto out;
2181
2182         for (i = 0;; i++) {
2183                 pos = str_buf;
2184                 __u32 rc_net;
2185
2186                 memset(buf, 0, buf_size);
2187
2188                 LIBCFS_IOC_INIT_V2(*ni_data, lic_cfg_hdr);
2189                 /*
2190                  * set the ioc_len to the proper value since INIT assumes
2191                  * size of data
2192                  */
2193                 ni_data->lic_cfg_hdr.ioc_len = buf_size;
2194                 ni_data->lic_idx = i;
2195
2196                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_LOCAL_NI, ni_data);
2197                 if (rc != 0) {
2198                         l_errno = errno;
2199                         break;
2200                 }
2201
2202                 rc_net = LNET_NIDNET(ni_data->lic_nid);
2203
2204                 /* filter on provided data */
2205                 if (net != LNET_NIDNET(LNET_NID_ANY) &&
2206                     net != rc_net)
2207                         continue;
2208
2209                 /* if we're backing up don't store lo */
2210                 if (backup && LNET_NETTYP(rc_net) == LOLND)
2211                         continue;
2212
2213                 /* default rc to -1 in case we hit the goto */
2214                 rc = -1;
2215                 exist = true;
2216
2217                 stats = (struct lnet_ioctl_element_stats *)ni_data->lic_bulk;
2218                 lnd = (struct lnet_ioctl_config_lnd_tunables *)
2219                         (ni_data->lic_bulk + sizeof(*stats));
2220
2221                 if (rc_net != prev_net) {
2222                         prev_net = rc_net;
2223                         new_net = true;
2224                         net_num++;
2225                 }
2226
2227                 if (new_net) {
2228                         if (!cYAML_create_string(net_node, "net type",
2229                                                  libcfs_net2str(rc_net)))
2230                                 goto out;
2231
2232                         tmp = cYAML_create_seq(net_node, "local NI(s)");
2233                         if (tmp == NULL)
2234                                 goto out;
2235                         new_net = false;
2236                 }
2237
2238                 /* create the tree to be printed. */
2239                 item = cYAML_create_seq_item(tmp);
2240                 if (item == NULL)
2241                         goto out;
2242
2243                 if (first_seq == NULL)
2244                         first_seq = item;
2245
2246                 if (!backup &&
2247                     cYAML_create_string(item, "nid",
2248                                         libcfs_nid2str(ni_data->lic_nid)) == NULL)
2249                         goto out;
2250
2251                 if (!backup &&
2252                     cYAML_create_string(item,
2253                                         "status",
2254                                         (ni_data->lic_status ==
2255                                           LNET_NI_STATUS_UP) ?
2256                                             "up" : "down") == NULL)
2257                         goto out;
2258
2259                 /* don't add interfaces unless there is at least one
2260                  * interface */
2261                 if (strlen(ni_data->lic_ni_intf[0]) > 0) {
2262                         interfaces = cYAML_create_object(item, "interfaces");
2263                         if (interfaces == NULL)
2264                                 goto out;
2265
2266                         for (j = 0; j < LNET_INTERFACES_NUM; j++) {
2267                                 if (strlen(ni_data->lic_ni_intf[j]) > 0) {
2268                                         snprintf(str_buf,
2269                                                  sizeof(str_buf), "%d", j);
2270                                         if (cYAML_create_string(interfaces,
2271                                                 str_buf,
2272                                                 ni_data->lic_ni_intf[j]) ==
2273                                                         NULL)
2274                                                 goto out;
2275                                 }
2276                         }
2277                 }
2278
2279                 if (detail) {
2280                         char *limit;
2281                         int k;
2282
2283                         if (backup)
2284                                 goto continue_without_msg_stats;
2285
2286                         statistics = cYAML_create_object(item, "statistics");
2287                         if (statistics == NULL)
2288                                 goto out;
2289
2290                         if (cYAML_create_number(statistics, "send_count",
2291                                                 stats->iel_send_count)
2292                                                         == NULL)
2293                                 goto out;
2294
2295                         if (cYAML_create_number(statistics, "recv_count",
2296                                                 stats->iel_recv_count)
2297                                                         == NULL)
2298                                 goto out;
2299
2300                         if (cYAML_create_number(statistics, "drop_count",
2301                                                 stats->iel_drop_count)
2302                                                         == NULL)
2303                                 goto out;
2304
2305                         if (detail < 2)
2306                                 goto continue_without_msg_stats;
2307
2308                         LIBCFS_IOC_INIT_V2(msg_stats, im_hdr);
2309                         msg_stats.im_hdr.ioc_len = sizeof(msg_stats);
2310                         msg_stats.im_idx = i;
2311
2312                         rc = l_ioctl(LNET_DEV_ID,
2313                                      IOC_LIBCFS_GET_LOCAL_NI_MSG_STATS,
2314                                      &msg_stats);
2315                         if (rc != 0) {
2316                                 l_errno = errno;
2317                                 goto continue_without_msg_stats;
2318                         }
2319
2320                         for (k = 0; k < 3; k++) {
2321                                 struct lnet_ioctl_comm_count *counts;
2322                                 struct cYAML *msg_statistics = NULL;
2323
2324                                 msg_statistics = cYAML_create_object(item,
2325                                                  (char *)gmsg_stat_names[k]);
2326                                 if (msg_statistics == NULL)
2327                                         goto out;
2328
2329                                 counts = get_counts(&msg_stats, k);
2330                                 if (counts == NULL)
2331                                         goto out;
2332
2333                                 if (!add_msg_stats_to_yaml_blk(msg_statistics,
2334                                                                counts))
2335                                         goto out;
2336                         }
2337
2338                         LIBCFS_IOC_INIT_V2(hstats, hlni_hdr);
2339                         hstats.hlni_nid = ni_data->lic_nid;
2340                         /* grab health stats */
2341                         rc = l_ioctl(LNET_DEV_ID,
2342                                      IOC_LIBCFS_GET_LOCAL_HSTATS,
2343                                      &hstats);
2344                         if (rc != 0) {
2345                                 l_errno = errno;
2346                                 goto continue_without_msg_stats;
2347                         }
2348                         yhstats = cYAML_create_object(item, "health stats");
2349                         if (!yhstats)
2350                                 goto out;
2351                         if (cYAML_create_number(yhstats, "health value",
2352                                                 hstats.hlni_health_value)
2353                                                         == NULL)
2354                                 goto out;
2355                         if (cYAML_create_number(yhstats, "interrupts",
2356                                                 hstats.hlni_local_interrupt)
2357                                                         == NULL)
2358                                 goto out;
2359                         if (cYAML_create_number(yhstats, "dropped",
2360                                                 hstats.hlni_local_dropped)
2361                                                         == NULL)
2362                                 goto out;
2363                         if (cYAML_create_number(yhstats, "aborted",
2364                                                 hstats.hlni_local_aborted)
2365                                                         == NULL)
2366                                 goto out;
2367                         if (cYAML_create_number(yhstats, "no route",
2368                                                 hstats.hlni_local_no_route)
2369                                                         == NULL)
2370                                 goto out;
2371                         if (cYAML_create_number(yhstats, "timeouts",
2372                                                 hstats.hlni_local_timeout)
2373                                                         == NULL)
2374                                 goto out;
2375                         if (cYAML_create_number(yhstats, "error",
2376                                                 hstats.hlni_local_error)
2377                                                         == NULL)
2378                                 goto out;
2379
2380 continue_without_msg_stats:
2381                         tunables = cYAML_create_object(item, "tunables");
2382                         if (!tunables)
2383                                 goto out;
2384
2385                         rc = lustre_net_show_tunables(tunables, &lnd->lt_cmn);
2386                         if (rc != LUSTRE_CFG_RC_NO_ERR)
2387                                 goto out;
2388
2389                         rc = lustre_ni_show_tunables(tunables, LNET_NETTYP(rc_net),
2390                                                      &lnd->lt_tun);
2391                         if (rc != LUSTRE_CFG_RC_NO_ERR &&
2392                             rc != LUSTRE_CFG_RC_NO_MATCH)
2393                                 goto out;
2394
2395                         if (rc != LUSTRE_CFG_RC_NO_MATCH) {
2396                                 tunables = cYAML_create_object(item,
2397                                                                "lnd tunables");
2398                                 if (tunables == NULL)
2399                                         goto out;
2400                         }
2401
2402                         if (!backup &&
2403                             cYAML_create_number(item, "dev cpt",
2404                                                 ni_data->lic_dev_cpt) == NULL)
2405                                 goto out;
2406
2407                         if (!backup &&
2408                             cYAML_create_number(item, "tcp bonding",
2409                                                 ni_data->lic_tcp_bonding)
2410                                                         == NULL)
2411                                 goto out;
2412
2413                         /* out put the CPTs in the format: "[x,x,x,...]" */
2414                         limit = str_buf + str_buf_len - 3;
2415                         pos += snprintf(pos, limit - pos, "\"[");
2416                         for (j = 0 ; ni_data->lic_ncpts >= 1 &&
2417                                 j < ni_data->lic_ncpts &&
2418                                 pos < limit; j++) {
2419                                 pos += snprintf(pos, limit - pos,
2420                                                 "%d", ni_data->lic_cpts[j]);
2421                                 if ((j + 1) < ni_data->lic_ncpts)
2422                                         pos += snprintf(pos, limit - pos, ",");
2423                         }
2424                         pos += snprintf(pos, 3, "]\"");
2425
2426                         if (ni_data->lic_ncpts >= 1 &&
2427                             cYAML_create_string(item, "CPT",
2428                                                 str_buf) == NULL)
2429                                 goto out;
2430                 }
2431         }
2432
2433         /* Print out the net information only if show_rc is not provided */
2434         if (show_rc == NULL)
2435                 cYAML_print_tree(root);
2436
2437         if (l_errno != ENOENT) {
2438                 snprintf(err_str,
2439                          sizeof(err_str),
2440                          "\"cannot get networks: %s\"",
2441                          strerror(l_errno));
2442                 rc = -l_errno;
2443                 goto out;
2444         } else
2445                 rc = LUSTRE_CFG_RC_NO_ERR;
2446
2447         snprintf(err_str, sizeof(err_str), "\"success\"");
2448 out:
2449         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR || !exist) {
2450                 cYAML_free_tree(root);
2451         } else if (show_rc != NULL && *show_rc != NULL) {
2452                 struct cYAML *show_node;
2453                 /* find the net node, if one doesn't exist
2454                  * then insert one.  Otherwise add to the one there
2455                  */
2456                 show_node = cYAML_get_object_item(*show_rc, "net");
2457                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
2458                         cYAML_insert_child(show_node, first_seq);
2459                         free(net_node);
2460                         free(root);
2461                 } else if (show_node == NULL) {
2462                         cYAML_insert_sibling((*show_rc)->cy_child,
2463                                                 net_node);
2464                         free(root);
2465                 } else {
2466                         cYAML_free_tree(root);
2467                 }
2468         } else {
2469                 *show_rc = root;
2470         }
2471
2472         cYAML_build_error(rc, seq_no, SHOW_CMD, "net", err_str, err_rc);
2473
2474         return rc;
2475 }
2476
2477 int lustre_lnet_enable_routing(int enable, int seq_no, struct cYAML **err_rc)
2478 {
2479         struct lnet_ioctl_config_data data;
2480         int rc = LUSTRE_CFG_RC_NO_ERR;
2481         char err_str[LNET_MAX_STR_LEN];
2482
2483         snprintf(err_str, sizeof(err_str), "\"success\"");
2484
2485         LIBCFS_IOC_INIT_V2(data, cfg_hdr);
2486         data.cfg_config_u.cfg_buffers.buf_enable = (enable) ? 1 : 0;
2487
2488         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_CONFIG_RTR, &data);
2489         if (rc != 0) {
2490                 rc = -errno;
2491                 snprintf(err_str,
2492                          sizeof(err_str),
2493                          "\"cannot %s routing %s\"",
2494                          (enable) ? "enable" : "disable", strerror(errno));
2495                 goto out;
2496         }
2497
2498 out:
2499         cYAML_build_error(rc, seq_no,
2500                          (enable) ? ADD_CMD : DEL_CMD,
2501                          "routing", err_str, err_rc);
2502
2503         return rc;
2504 }
2505
2506 int ioctl_set_value(__u32 val, int ioc, char *name,
2507                     int seq_no, struct cYAML **err_rc)
2508 {
2509         struct lnet_ioctl_set_value data;
2510         int rc = LUSTRE_CFG_RC_NO_ERR;
2511         char err_str[LNET_MAX_STR_LEN];
2512
2513         snprintf(err_str, sizeof(err_str), "\"success\"");
2514
2515         LIBCFS_IOC_INIT_V2(data, sv_hdr);
2516         data.sv_value = val;
2517
2518         rc = l_ioctl(LNET_DEV_ID, ioc , &data);
2519         if (rc != 0) {
2520                 rc = -errno;
2521                 snprintf(err_str,
2522                          sizeof(err_str),
2523                          "\"cannot configure %s to %d: %s\"", name,
2524                          val, strerror(errno));
2525         }
2526
2527         cYAML_build_error(rc, seq_no, ADD_CMD, name, err_str, err_rc);
2528
2529         return rc;
2530 }
2531
2532 int lustre_lnet_config_recov_intrv(int intrv, int seq_no, struct cYAML **err_rc)
2533 {
2534         int rc = LUSTRE_CFG_RC_NO_ERR;
2535         char err_str[LNET_MAX_STR_LEN];
2536         char val[LNET_MAX_STR_LEN];
2537
2538         snprintf(err_str, sizeof(err_str), "\"success\"");
2539
2540         snprintf(val, sizeof(val), "%d", intrv);
2541
2542         rc = write_sysfs_file(modparam_path, "lnet_recovery_interval", val,
2543                               1, strlen(val) + 1);
2544         if (rc)
2545                 snprintf(err_str, sizeof(err_str),
2546                          "\"cannot configure recovery interval: %s\"",
2547                          strerror(errno));
2548
2549         cYAML_build_error(rc, seq_no, ADD_CMD, "recovery_interval", err_str, err_rc);
2550
2551         return rc;
2552 }
2553
2554 int lustre_lnet_config_hsensitivity(int sen, int seq_no, struct cYAML **err_rc)
2555 {
2556         int rc = LUSTRE_CFG_RC_NO_ERR;
2557         char err_str[LNET_MAX_STR_LEN];
2558         char val[LNET_MAX_STR_LEN];
2559
2560         snprintf(err_str, sizeof(err_str), "\"success\"");
2561
2562         snprintf(val, sizeof(val), "%d", sen);
2563
2564         rc = write_sysfs_file(modparam_path, "lnet_health_sensitivity", val,
2565                               1, strlen(val) + 1);
2566         if (rc)
2567                 snprintf(err_str, sizeof(err_str),
2568                          "\"cannot configure health sensitivity: %s\"",
2569                          strerror(errno));
2570
2571         cYAML_build_error(rc, seq_no, ADD_CMD, "health_sensitivity", err_str, err_rc);
2572
2573         return rc;
2574 }
2575
2576 int lustre_lnet_config_transaction_to(int timeout, int seq_no, struct cYAML **err_rc)
2577 {
2578         int rc = LUSTRE_CFG_RC_NO_ERR;
2579         char err_str[LNET_MAX_STR_LEN];
2580         char val[LNET_MAX_STR_LEN];
2581
2582         snprintf(err_str, sizeof(err_str), "\"success\"");
2583
2584         snprintf(val, sizeof(val), "%d", timeout);
2585
2586         rc = write_sysfs_file(modparam_path, "lnet_transaction_timeout", val,
2587                               1, strlen(val) + 1);
2588         if (rc)
2589                 snprintf(err_str, sizeof(err_str),
2590                          "\"cannot configure transaction timeout: %s\"",
2591                          strerror(errno));
2592
2593         cYAML_build_error(rc, seq_no, ADD_CMD, "transaction_timeout", err_str, err_rc);
2594
2595         return rc;
2596 }
2597
2598 int lustre_lnet_config_retry_count(int count, int seq_no, struct cYAML **err_rc)
2599 {
2600         int rc = LUSTRE_CFG_RC_NO_ERR;
2601         char err_str[LNET_MAX_STR_LEN];
2602         char val[LNET_MAX_STR_LEN];
2603
2604         snprintf(err_str, sizeof(err_str), "\"success\"");
2605
2606         snprintf(val, sizeof(val), "%d", count);
2607
2608         rc = write_sysfs_file(modparam_path, "lnet_retry_count", val,
2609                               1, strlen(val) + 1);
2610         if (rc)
2611                 snprintf(err_str, sizeof(err_str),
2612                          "\"cannot configure retry count: %s\"",
2613                          strerror(errno));
2614
2615         cYAML_build_error(rc, seq_no, ADD_CMD, "retry_count", err_str, err_rc);
2616
2617         return rc;
2618 }
2619
2620 int lustre_lnet_config_max_intf(int max, int seq_no, struct cYAML **err_rc)
2621 {
2622         int rc = LUSTRE_CFG_RC_NO_ERR;
2623         char err_str[LNET_MAX_STR_LEN];
2624         char val[LNET_MAX_STR_LEN];
2625
2626         snprintf(err_str, sizeof(err_str), "\"success\"");
2627
2628         snprintf(val, sizeof(val), "%d", max);
2629
2630         rc = write_sysfs_file(modparam_path, "lnet_interfaces_max", val,
2631                               1, strlen(val) + 1);
2632         if (rc)
2633                 snprintf(err_str, sizeof(err_str),
2634                          "\"cannot configure max interfaces: %s\"",
2635                          strerror(errno));
2636
2637         cYAML_build_error(rc, seq_no, ADD_CMD, "max_interfaces", err_str, err_rc);
2638
2639         return rc;
2640 }
2641
2642 int lustre_lnet_config_discovery(int enable, int seq_no, struct cYAML **err_rc)
2643 {
2644         int rc = LUSTRE_CFG_RC_NO_ERR;
2645         char err_str[LNET_MAX_STR_LEN];
2646         char val[LNET_MAX_STR_LEN];
2647
2648         snprintf(err_str, sizeof(err_str), "\"success\"");
2649
2650         snprintf(val, sizeof(val), "%u", (enable) ? 0 : 1);
2651
2652         rc = write_sysfs_file(modparam_path, "lnet_peer_discovery_disabled", val,
2653                               1, strlen(val) + 1);
2654         if (rc)
2655                 snprintf(err_str, sizeof(err_str),
2656                          "\"cannot configure discovery: %s\"",
2657                          strerror(errno));
2658
2659         cYAML_build_error(rc, seq_no, ADD_CMD, "discovery", err_str, err_rc);
2660
2661         return rc;
2662
2663 }
2664
2665 int lustre_lnet_config_numa_range(int range, int seq_no, struct cYAML **err_rc)
2666 {
2667         return ioctl_set_value(range, IOC_LIBCFS_SET_NUMA_RANGE,
2668                                "numa_range", seq_no, err_rc);
2669 }
2670
2671 int lustre_lnet_config_buffers(int tiny, int small, int large, int seq_no,
2672                                struct cYAML **err_rc)
2673 {
2674         struct lnet_ioctl_config_data data;
2675         int rc = LUSTRE_CFG_RC_NO_ERR;
2676         char err_str[LNET_MAX_STR_LEN];
2677
2678         snprintf(err_str, sizeof(err_str), "\"success\"");
2679
2680         /* -1 indicates to ignore changes to this field */
2681         if (tiny < -1 || small < -1 || large < -1) {
2682                 snprintf(err_str,
2683                          sizeof(err_str),
2684                          "\"tiny, small and large must be >= 0\"");
2685                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
2686                 goto out;
2687         }
2688
2689         LIBCFS_IOC_INIT_V2(data, cfg_hdr);
2690         data.cfg_config_u.cfg_buffers.buf_tiny = tiny;
2691         data.cfg_config_u.cfg_buffers.buf_small = small;
2692         data.cfg_config_u.cfg_buffers.buf_large = large;
2693
2694         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_ADD_BUF, &data);
2695         if (rc != 0) {
2696                 rc = -errno;
2697                 snprintf(err_str,
2698                          sizeof(err_str),
2699                          "\"cannot configure buffers: %s\"", strerror(errno));
2700                 goto out;
2701         }
2702
2703 out:
2704         cYAML_build_error(rc, seq_no, ADD_CMD, "buf", err_str, err_rc);
2705
2706         return rc;
2707 }
2708
2709 int lustre_lnet_show_routing(int seq_no, struct cYAML **show_rc,
2710                              struct cYAML **err_rc, bool backup)
2711 {
2712         struct lnet_ioctl_config_data *data;
2713         struct lnet_ioctl_pool_cfg *pool_cfg = NULL;
2714         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
2715         int l_errno = 0;
2716         char *buf;
2717         char *pools[LNET_NRBPOOLS] = {"tiny", "small", "large"};
2718         int buf_count[LNET_NRBPOOLS] = {0};
2719         struct cYAML *root = NULL, *pools_node = NULL,
2720                      *type_node = NULL, *item = NULL, *cpt = NULL,
2721                      *first_seq = NULL, *buffers = NULL;
2722         int i, j;
2723         char err_str[LNET_MAX_STR_LEN];
2724         char node_name[LNET_MAX_STR_LEN];
2725         bool exist = false;
2726
2727         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
2728
2729         buf = calloc(1, sizeof(*data) + sizeof(*pool_cfg));
2730         if (buf == NULL)
2731                 goto out;
2732
2733         data = (struct lnet_ioctl_config_data *)buf;
2734
2735         root = cYAML_create_object(NULL, NULL);
2736         if (root == NULL)
2737                 goto out;
2738
2739         if (backup)
2740                 pools_node = cYAML_create_object(root, "routing");
2741         else
2742                 pools_node = cYAML_create_seq(root, "routing");
2743         if (pools_node == NULL)
2744                 goto out;
2745
2746         for (i = 0;; i++) {
2747                 LIBCFS_IOC_INIT_V2(*data, cfg_hdr);
2748                 data->cfg_hdr.ioc_len = sizeof(struct lnet_ioctl_config_data) +
2749                                         sizeof(struct lnet_ioctl_pool_cfg);
2750                 data->cfg_count = i;
2751
2752                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_BUF, data);
2753                 if (rc != 0) {
2754                         l_errno = errno;
2755                         break;
2756                 }
2757
2758                 exist = true;
2759
2760                 pool_cfg = (struct lnet_ioctl_pool_cfg *)data->cfg_bulk;
2761
2762                 if (backup)
2763                         goto calculate_buffers;
2764
2765                 snprintf(node_name, sizeof(node_name), "cpt[%d]", i);
2766                 item = cYAML_create_seq_item(pools_node);
2767                 if (item == NULL)
2768                         goto out;
2769
2770                 if (first_seq == NULL)
2771                         first_seq = item;
2772
2773                 cpt = cYAML_create_object(item, node_name);
2774                 if (cpt == NULL)
2775                         goto out;
2776
2777 calculate_buffers:
2778                 /* create the tree  and print */
2779                 for (j = 0; j < LNET_NRBPOOLS; j++) {
2780                         if (!backup) {
2781                                 type_node = cYAML_create_object(cpt, pools[j]);
2782                                 if (type_node == NULL)
2783                                         goto out;
2784                         }
2785                         if (!backup &&
2786                             cYAML_create_number(type_node, "npages",
2787                                                 pool_cfg->pl_pools[j].pl_npages)
2788                             == NULL)
2789                                 goto out;
2790                         if (!backup &&
2791                             cYAML_create_number(type_node, "nbuffers",
2792                                                 pool_cfg->pl_pools[j].
2793                                                   pl_nbuffers) == NULL)
2794                                 goto out;
2795                         if (!backup &&
2796                             cYAML_create_number(type_node, "credits",
2797                                                 pool_cfg->pl_pools[j].
2798                                                    pl_credits) == NULL)
2799                                 goto out;
2800                         if (!backup &&
2801                             cYAML_create_number(type_node, "mincredits",
2802                                                 pool_cfg->pl_pools[j].
2803                                                    pl_mincredits) == NULL)
2804                                 goto out;
2805                         /* keep track of the total count for each of the
2806                          * tiny, small and large buffers */
2807                         buf_count[j] += pool_cfg->pl_pools[j].pl_nbuffers;
2808                 }
2809         }
2810
2811         if (pool_cfg != NULL) {
2812                 if (backup) {
2813                         if (cYAML_create_number(pools_node, "enable",
2814                                                 pool_cfg->pl_routing) ==
2815                         NULL)
2816                                 goto out;
2817
2818                         goto add_buffer_section;
2819                 }
2820
2821                 item = cYAML_create_seq_item(pools_node);
2822                 if (item == NULL)
2823                         goto out;
2824
2825                 if (cYAML_create_number(item, "enable", pool_cfg->pl_routing) ==
2826                     NULL)
2827                         goto out;
2828         }
2829
2830 add_buffer_section:
2831         /* create a buffers entry in the show. This is necessary so that
2832          * if the YAML output is used to configure a node, the buffer
2833          * configuration takes hold */
2834         buffers = cYAML_create_object(root, "buffers");
2835         if (buffers == NULL)
2836                 goto out;
2837
2838         for (i = 0; i < LNET_NRBPOOLS; i++) {
2839                 if (cYAML_create_number(buffers, pools[i], buf_count[i]) == NULL)
2840                         goto out;
2841         }
2842
2843         if (show_rc == NULL)
2844                 cYAML_print_tree(root);
2845
2846         if (l_errno != ENOENT) {
2847                 snprintf(err_str,
2848                          sizeof(err_str),
2849                          "\"cannot get routing information: %s\"",
2850                          strerror(l_errno));
2851                 rc = -l_errno;
2852                 goto out;
2853         } else
2854                 rc = LUSTRE_CFG_RC_NO_ERR;
2855
2856         snprintf(err_str, sizeof(err_str), "\"success\"");
2857         rc = LUSTRE_CFG_RC_NO_ERR;
2858
2859 out:
2860         free(buf);
2861         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR || !exist) {
2862                 cYAML_free_tree(root);
2863         } else if (show_rc != NULL && *show_rc != NULL) {
2864                 struct cYAML *routing_node;
2865                 /* there should exist only one routing block and one
2866                  * buffers block. If there already exists a previous one
2867                  * then don't add another */
2868                 routing_node = cYAML_get_object_item(*show_rc, "routing");
2869                 if (routing_node == NULL) {
2870                         cYAML_insert_sibling((*show_rc)->cy_child,
2871                                                 root->cy_child);
2872                         free(root);
2873                 } else {
2874                         cYAML_free_tree(root);
2875                 }
2876         } else {
2877                 *show_rc = root;
2878         }
2879
2880         cYAML_build_error(rc, seq_no, SHOW_CMD, "routing", err_str, err_rc);
2881
2882         return rc;
2883 }
2884
2885 int lustre_lnet_show_peer(char *knid, int detail, int seq_no,
2886                           struct cYAML **show_rc, struct cYAML **err_rc,
2887                           bool backup)
2888 {
2889         /*
2890          * TODO: This function is changing in a future patch to accommodate
2891          * PEER_LIST and proper filtering on any nid of the peer
2892          */
2893         struct lnet_ioctl_peer_cfg peer_info;
2894         struct lnet_peer_ni_credit_info *lpni_cri;
2895         struct lnet_ioctl_element_stats *lpni_stats;
2896         struct lnet_ioctl_element_msg_stats *msg_stats;
2897         struct lnet_ioctl_peer_ni_hstats *hstats;
2898         lnet_nid_t *nidp;
2899         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
2900         int i, j, k;
2901         int l_errno = 0;
2902         __u32 count;
2903         __u32 size;
2904         struct cYAML *root = NULL, *peer = NULL, *peer_ni = NULL,
2905                      *first_seq = NULL, *peer_root = NULL, *tmp = NULL,
2906                      *msg_statistics = NULL, *statistics = NULL,
2907                      *yhstats;
2908         char err_str[LNET_MAX_STR_LEN];
2909         struct lnet_process_id *list = NULL;
2910         void *data = NULL;
2911         void *lpni_data;
2912         bool exist = false;
2913
2914         snprintf(err_str, sizeof(err_str),
2915                  "\"out of memory\"");
2916
2917         /* create struct cYAML root object */
2918         root = cYAML_create_object(NULL, NULL);
2919         if (root == NULL)
2920                 goto out;
2921
2922         peer_root = cYAML_create_seq(root, "peer");
2923         if (peer_root == NULL)
2924                 goto out;
2925
2926         count = 1000;
2927         size = count * sizeof(struct lnet_process_id);
2928         list = malloc(size);
2929         if (list == NULL) {
2930                 l_errno = ENOMEM;
2931                 goto out;
2932         }
2933         if (knid != NULL) {
2934                 list[0].nid = libcfs_str2nid(knid);
2935                 count = 1;
2936         } else {
2937                 for (;;) {
2938                         memset(&peer_info, 0, sizeof(peer_info));
2939                         LIBCFS_IOC_INIT_V2(peer_info, prcfg_hdr);
2940                         peer_info.prcfg_hdr.ioc_len = sizeof(peer_info);
2941                         peer_info.prcfg_size = size;
2942                         peer_info.prcfg_bulk = list;
2943
2944                         l_errno = 0;
2945                         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_PEER_LIST,
2946                                      &peer_info);
2947                         count = peer_info.prcfg_count;
2948                         if (rc == 0)
2949                                 break;
2950                         l_errno = errno;
2951                         if (l_errno != E2BIG) {
2952                                 snprintf(err_str,
2953                                         sizeof(err_str),
2954                                         "\"cannot get peer list: %s\"",
2955                                         strerror(l_errno));
2956                                 rc = -l_errno;
2957                                 goto out;
2958                         }
2959                         free(list);
2960                         size = peer_info.prcfg_size;
2961                         list = malloc(size);
2962                         if (list == NULL) {
2963                                 l_errno = ENOMEM;
2964                                 goto out;
2965                         }
2966                 }
2967         }
2968
2969         size = 4096;
2970         data = malloc(size);
2971         if (data == NULL) {
2972                 l_errno = ENOMEM;
2973                 goto out;
2974         }
2975
2976         for (i = 0; i < count; i++) {
2977                 for (;;) {
2978                         memset(&peer_info, 0, sizeof(peer_info));
2979                         LIBCFS_IOC_INIT_V2(peer_info, prcfg_hdr);
2980                         peer_info.prcfg_hdr.ioc_len = sizeof(peer_info);
2981                         peer_info.prcfg_prim_nid = list[i].nid;
2982                         peer_info.prcfg_size = size;
2983                         peer_info.prcfg_bulk = data;
2984
2985                         l_errno = 0;
2986                         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_PEER_NI,
2987                                      &peer_info);
2988                         if (rc == 0)
2989                                 break;
2990                         l_errno = errno;
2991                         if (l_errno != E2BIG) {
2992                                 snprintf(err_str,
2993                                         sizeof(err_str),
2994                                         "\"cannot get peer information: %s\"",
2995                                         strerror(l_errno));
2996                                 rc = -l_errno;
2997                                 goto out;
2998                         }
2999                         free(data);
3000                         size = peer_info.prcfg_size;
3001                         data = malloc(size);
3002                         if (data == NULL) {
3003                                 l_errno = ENOMEM;
3004                                 goto out;
3005                         }
3006                 }
3007                 exist = true;
3008
3009                 peer = cYAML_create_seq_item(peer_root);
3010                 if (peer == NULL)
3011                         goto out;
3012
3013                 if (first_seq == NULL)
3014                         first_seq = peer;
3015
3016                 lnet_nid_t pnid = peer_info.prcfg_prim_nid;
3017                 if (cYAML_create_string(peer, "primary nid",
3018                                         libcfs_nid2str(pnid))
3019                     == NULL)
3020                         goto out;
3021                 if (cYAML_create_string(peer, "Multi-Rail",
3022                                         peer_info.prcfg_mr ? "True" : "False")
3023                     == NULL)
3024                         goto out;
3025                 /*
3026                  * print out the state of the peer only if details are
3027                  * requested
3028                  */
3029                 if (detail >= 3) {
3030                         if (!backup &&
3031                             cYAML_create_number(peer, "peer state",
3032                                                 peer_info.prcfg_state)
3033                                 == NULL)
3034                                 goto out;
3035                 }
3036
3037                 tmp = cYAML_create_seq(peer, "peer ni");
3038                 if (tmp == NULL)
3039                         goto out;
3040
3041                 lpni_data = data;
3042                 for (j = 0; j < peer_info.prcfg_count; j++) {
3043                         nidp = lpni_data;
3044                         lpni_cri = (void*)nidp + sizeof(nidp);
3045                         lpni_stats = (void *)lpni_cri + sizeof(*lpni_cri);
3046                         msg_stats = (void *)lpni_stats + sizeof(*lpni_stats);
3047                         hstats = (void *)msg_stats + sizeof(*msg_stats);
3048                         lpni_data = (void *)hstats + sizeof(*hstats);
3049
3050                         peer_ni = cYAML_create_seq_item(tmp);
3051                         if (peer_ni == NULL)
3052                                 goto out;
3053
3054                         if (cYAML_create_string(peer_ni, "nid",
3055                                                 libcfs_nid2str(*nidp))
3056                             == NULL)
3057                                 goto out;
3058
3059                         if (backup)
3060                                 continue;
3061
3062                         if (cYAML_create_string(peer_ni, "state",
3063                                                 lpni_cri->cr_aliveness)
3064                             == NULL)
3065                                 goto out;
3066
3067                         if (!detail)
3068                                 continue;
3069
3070                         if (cYAML_create_number(peer_ni, "max_ni_tx_credits",
3071                                                 lpni_cri->cr_ni_peer_tx_credits)
3072                             == NULL)
3073                                 goto out;
3074
3075                         if (cYAML_create_number(peer_ni, "available_tx_credits",
3076                                                 lpni_cri->cr_peer_tx_credits)
3077                             == NULL)
3078                                 goto out;
3079
3080                         if (cYAML_create_number(peer_ni, "min_tx_credits",
3081                                                 lpni_cri->cr_peer_min_tx_credits)
3082                             == NULL)
3083                                 goto out;
3084
3085                         if (cYAML_create_number(peer_ni, "tx_q_num_of_buf",
3086                                                 lpni_cri->cr_peer_tx_qnob)
3087                             == NULL)
3088                                 goto out;
3089
3090                         if (cYAML_create_number(peer_ni, "available_rtr_credits",
3091                                                 lpni_cri->cr_peer_rtr_credits)
3092                             == NULL)
3093                                 goto out;
3094
3095                         if (cYAML_create_number(peer_ni, "min_rtr_credits",
3096                                                 lpni_cri->cr_peer_min_rtr_credits)
3097                             == NULL)
3098                                 goto out;
3099
3100                         if (cYAML_create_number(peer_ni, "refcount",
3101                                                 lpni_cri->cr_refcount) == NULL)
3102                                 goto out;
3103
3104                         statistics = cYAML_create_object(peer_ni, "statistics");
3105                         if (statistics == NULL)
3106                                 goto out;
3107
3108                         if (cYAML_create_number(statistics, "send_count",
3109                                                 lpni_stats->iel_send_count)
3110                             == NULL)
3111                                 goto out;
3112
3113                         if (cYAML_create_number(statistics, "recv_count",
3114                                                 lpni_stats->iel_recv_count)
3115                             == NULL)
3116                                 goto out;
3117
3118                         if (cYAML_create_number(statistics, "drop_count",
3119                                                 lpni_stats->iel_drop_count)
3120                             == NULL)
3121                                 goto out;
3122
3123                         if (detail < 2)
3124                                 continue;
3125
3126                         for (k = 0; k < 3; k++) {
3127                                 struct lnet_ioctl_comm_count *counts;
3128
3129                                 msg_statistics = cYAML_create_object(peer_ni,
3130                                                  (char *) gmsg_stat_names[k]);
3131                                 if (msg_statistics == NULL)
3132                                         goto out;
3133
3134                                 counts = get_counts(msg_stats, k);
3135                                 if (counts == NULL)
3136                                         goto out;
3137
3138                                 if (!add_msg_stats_to_yaml_blk(msg_statistics,
3139                                                                counts))
3140                                         goto out;
3141                         }
3142
3143                         yhstats = cYAML_create_object(peer_ni, "health stats");
3144                         if (!yhstats)
3145                                 goto out;
3146                         if (cYAML_create_number(yhstats, "health value",
3147                                                 hstats->hlpni_health_value)
3148                                                         == NULL)
3149                                 goto out;
3150                         if (cYAML_create_number(yhstats, "dropped",
3151                                                 hstats->hlpni_remote_dropped)
3152                                                         == NULL)
3153                                 goto out;
3154                         if (cYAML_create_number(yhstats, "timeout",
3155                                                 hstats->hlpni_remote_timeout)
3156                                                         == NULL)
3157                                 goto out;
3158                         if (cYAML_create_number(yhstats, "error",
3159                                                 hstats->hlpni_remote_error)
3160                                                         == NULL)
3161                                 goto out;
3162                         if (cYAML_create_number(yhstats, "network timeout",
3163                                                 hstats->hlpni_network_timeout)
3164                                                         == NULL)
3165                                 goto out;
3166                 }
3167         }
3168
3169         /* print output iff show_rc is not provided */
3170         if (show_rc == NULL)
3171                 cYAML_print_tree(root);
3172
3173         snprintf(err_str, sizeof(err_str), "\"success\"");
3174         rc = LUSTRE_CFG_RC_NO_ERR;
3175
3176 out:
3177         free(list);
3178         free(data);
3179         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR || !exist) {
3180                 cYAML_free_tree(root);
3181         } else if (show_rc != NULL && *show_rc != NULL) {
3182                 struct cYAML *show_node;
3183                 /* find the peer node, if one doesn't exist then
3184                  * insert one.  Otherwise add to the one there
3185                  */
3186                 show_node = cYAML_get_object_item(*show_rc,
3187                                                   "peer");
3188                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
3189                         cYAML_insert_child(show_node, first_seq);
3190                         free(peer_root);
3191                         free(root);
3192                 } else if (show_node == NULL) {
3193                         cYAML_insert_sibling((*show_rc)->cy_child,
3194                                              peer_root);
3195                         free(root);
3196                 } else {
3197                         cYAML_free_tree(root);
3198                 }
3199         } else {
3200                 *show_rc = root;
3201         }
3202
3203         cYAML_build_error(rc, seq_no, SHOW_CMD, "peer", err_str,
3204                           err_rc);
3205
3206         return rc;
3207 }
3208
3209 int lustre_lnet_list_peer(int seq_no,
3210                           struct cYAML **show_rc, struct cYAML **err_rc)
3211 {
3212         struct lnet_ioctl_peer_cfg peer_info;
3213         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3214         __u32 count;
3215         __u32 size;
3216         int i = 0;
3217         int l_errno = 0;
3218         struct cYAML *root = NULL, *list_root = NULL, *first_seq = NULL;
3219         char err_str[LNET_MAX_STR_LEN];
3220         struct lnet_process_id *list = NULL;
3221
3222         snprintf(err_str, sizeof(err_str),
3223                  "\"out of memory\"");
3224
3225         memset(&peer_info, 0, sizeof(peer_info));
3226
3227         /* create struct cYAML root object */
3228         root = cYAML_create_object(NULL, NULL);
3229         if (root == NULL)
3230                 goto out;
3231
3232         list_root = cYAML_create_seq(root, "peer list");
3233         if (list_root == NULL)
3234                 goto out;
3235
3236         count = 1000;
3237         size = count * sizeof(struct lnet_process_id);
3238         list = malloc(size);
3239         if (list == NULL) {
3240                 l_errno = ENOMEM;
3241                 goto out;
3242         }
3243         for (;;) {
3244                 LIBCFS_IOC_INIT_V2(peer_info, prcfg_hdr);
3245                 peer_info.prcfg_hdr.ioc_len = sizeof(peer_info);
3246                 peer_info.prcfg_size = size;
3247                 peer_info.prcfg_bulk = list;
3248
3249                 l_errno = 0;
3250                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_PEER_LIST, &peer_info);
3251                 count = peer_info.prcfg_count;
3252                 if (rc == 0)
3253                         break;
3254                 l_errno = errno;
3255                 if (l_errno != E2BIG) {
3256                         snprintf(err_str,
3257                                 sizeof(err_str),
3258                                 "\"cannot get peer list: %s\"",
3259                                 strerror(l_errno));
3260                         rc = -l_errno;
3261                         goto out;
3262                 }
3263                 free(list);
3264                 size = peer_info.prcfg_size;
3265                 list = malloc(size);
3266                 if (list == NULL) {
3267                         l_errno = ENOMEM;
3268                         goto out;
3269                 }
3270         }
3271
3272         /* count is now the actual number of ids in the list. */
3273         for (i = 0; i < count; i++) {
3274                 if (cYAML_create_string(list_root, "nid",
3275                                         libcfs_nid2str(list[i].nid))
3276                     == NULL)
3277                         goto out;
3278         }
3279
3280         /* print output iff show_rc is not provided */
3281         if (show_rc == NULL)
3282                 cYAML_print_tree(root);
3283
3284         snprintf(err_str, sizeof(err_str), "\"success\"");
3285         rc = LUSTRE_CFG_RC_NO_ERR;
3286
3287 out:
3288         if (list != NULL)
3289                 free(list);
3290         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR) {
3291                 cYAML_free_tree(root);
3292         } else if (show_rc != NULL && *show_rc != NULL) {
3293                 struct cYAML *show_node;
3294                 /* find the peer node, if one doesn't exist then
3295                  * insert one.  Otherwise add to the one there
3296                  */
3297                 show_node = cYAML_get_object_item(*show_rc,
3298                                                   "peer");
3299                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
3300                         cYAML_insert_child(show_node, first_seq);
3301                         free(list_root);
3302                         free(root);
3303                 } else if (show_node == NULL) {
3304                         cYAML_insert_sibling((*show_rc)->cy_child,
3305                                              list_root);
3306                         free(root);
3307                 } else {
3308                         cYAML_free_tree(root);
3309                 }
3310         } else {
3311                 *show_rc = root;
3312         }
3313
3314         cYAML_build_error(rc, seq_no, SHOW_CMD, "peer", err_str,
3315                           err_rc);
3316
3317         return rc;
3318 }
3319
3320 static void add_to_global(struct cYAML *show_rc, struct cYAML *node,
3321                           struct cYAML *root)
3322 {
3323         struct cYAML *show_node;
3324
3325         show_node = cYAML_get_object_item(show_rc, "global");
3326         if (show_node != NULL)
3327                 cYAML_insert_sibling(show_node->cy_child,
3328                                      node->cy_child);
3329         else
3330                 cYAML_insert_sibling(show_rc->cy_child,
3331                                      node);
3332         free(root);
3333 }
3334
3335 static int build_global_yaml_entry(char *err_str, int err_len, int seq_no,
3336                                    char *name, __u32 value,
3337                                    struct cYAML **show_rc,
3338                                    struct cYAML **err_rc, int err)
3339 {
3340         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3341         struct cYAML *root = NULL, *global = NULL;
3342
3343         if (err) {
3344                 rc = err;
3345                 goto out;
3346         }
3347
3348         root = cYAML_create_object(NULL, NULL);
3349         if (root == NULL)
3350                 goto out;
3351
3352         global = cYAML_create_object(root, "global");
3353         if (global == NULL)
3354                 goto out;
3355
3356         if (cYAML_create_number(global, name,
3357                                 value) == NULL)
3358                 goto out;
3359
3360         if (show_rc == NULL)
3361                 cYAML_print_tree(root);
3362
3363         snprintf(err_str, err_len, "\"success\"");
3364
3365         rc = LUSTRE_CFG_RC_NO_ERR;
3366
3367 out:
3368         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR) {
3369                 cYAML_free_tree(root);
3370         } else if (show_rc != NULL && *show_rc != NULL) {
3371                 add_to_global(*show_rc, global, root);
3372         } else {
3373                 *show_rc = root;
3374         }
3375
3376         cYAML_build_error(rc, seq_no, SHOW_CMD, "global", err_str, err_rc);
3377
3378         return rc;
3379 }
3380
3381 static int ioctl_show_global_values(int ioc, int seq_no, char *name,
3382                                     struct cYAML **show_rc,
3383                                     struct cYAML **err_rc)
3384 {
3385         struct lnet_ioctl_set_value data;
3386         int rc;
3387         int l_errno = 0;
3388         char err_str[LNET_MAX_STR_LEN];
3389
3390         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
3391
3392         LIBCFS_IOC_INIT_V2(data, sv_hdr);
3393
3394         rc = l_ioctl(LNET_DEV_ID, ioc, &data);
3395         if (rc != 0) {
3396                 l_errno = -errno;
3397                 snprintf(err_str,
3398                          sizeof(err_str),
3399                          "\"cannot get %s: %s\"",
3400                          name, strerror(l_errno));
3401         }
3402
3403         return build_global_yaml_entry(err_str, sizeof(err_str), seq_no, name,
3404                                        data.sv_value, show_rc, err_rc, l_errno);
3405 }
3406
3407 int lustre_lnet_show_recov_intrv(int seq_no, struct cYAML **show_rc,
3408                                  struct cYAML **err_rc)
3409 {
3410         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3411         char val[LNET_MAX_STR_LEN];
3412         int intrv = -1, l_errno = 0;
3413         char err_str[LNET_MAX_STR_LEN];
3414
3415         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
3416
3417         rc = read_sysfs_file(modparam_path, "lnet_recovery_interval", val,
3418                              1, sizeof(val));
3419         if (rc) {
3420                 l_errno = -errno;
3421                 snprintf(err_str, sizeof(err_str),
3422                          "\"cannot get recovery interval: %d\"", rc);
3423         } else {
3424                 intrv = atoi(val);
3425         }
3426
3427         return build_global_yaml_entry(err_str, sizeof(err_str), seq_no,
3428                                        "recovery_interval", intrv, show_rc,
3429                                        err_rc, l_errno);
3430 }
3431
3432 int lustre_lnet_show_hsensitivity(int seq_no, struct cYAML **show_rc,
3433                                   struct cYAML **err_rc)
3434 {
3435         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3436         char val[LNET_MAX_STR_LEN];
3437         int sen = -1, l_errno = 0;
3438         char err_str[LNET_MAX_STR_LEN];
3439
3440         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
3441
3442         rc = read_sysfs_file(modparam_path, "lnet_health_sensitivity", val,
3443                              1, sizeof(val));
3444         if (rc) {
3445                 l_errno = -errno;
3446                 snprintf(err_str, sizeof(err_str),
3447                          "\"cannot get health sensitivity: %d\"", rc);
3448         } else {
3449                 sen = atoi(val);
3450         }
3451
3452         return build_global_yaml_entry(err_str, sizeof(err_str), seq_no,
3453                                        "health_sensitivity", sen, show_rc,
3454                                        err_rc, l_errno);
3455 }
3456
3457 int lustre_lnet_show_transaction_to(int seq_no, struct cYAML **show_rc,
3458                                     struct cYAML **err_rc)
3459 {
3460         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3461         char val[LNET_MAX_STR_LEN];
3462         int tto = -1, l_errno = 0;
3463         char err_str[LNET_MAX_STR_LEN];
3464
3465         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
3466
3467         rc = read_sysfs_file(modparam_path, "lnet_transaction_timeout", val,
3468                              1, sizeof(val));
3469         if (rc) {
3470                 l_errno = -errno;
3471                 snprintf(err_str, sizeof(err_str),
3472                          "\"cannot get transaction timeout: %d\"", rc);
3473         } else {
3474                 tto = atoi(val);
3475         }
3476
3477         return build_global_yaml_entry(err_str, sizeof(err_str), seq_no,
3478                                        "transaction_timeout", tto, show_rc,
3479                                        err_rc, l_errno);
3480 }
3481
3482 int lustre_lnet_show_retry_count(int seq_no, struct cYAML **show_rc,
3483                                  struct cYAML **err_rc)
3484 {
3485         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3486         char val[LNET_MAX_STR_LEN];
3487         int retry_count = -1, l_errno = 0;
3488         char err_str[LNET_MAX_STR_LEN];
3489
3490         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
3491
3492         rc = read_sysfs_file(modparam_path, "lnet_retry_count", val,
3493                              1, sizeof(val));
3494         if (rc) {
3495                 l_errno = -errno;
3496                 snprintf(err_str, sizeof(err_str),
3497                          "\"cannot get retry count: %d\"", rc);
3498         } else {
3499                 retry_count = atoi(val);
3500         }
3501
3502         return build_global_yaml_entry(err_str, sizeof(err_str), seq_no,
3503                                        "retry_count", retry_count, show_rc,
3504                                        err_rc, l_errno);
3505 }
3506
3507 int show_recovery_queue(enum lnet_health_type type, char *name, int seq_no,
3508                         struct cYAML **show_rc, struct cYAML **err_rc)
3509 {
3510         struct lnet_ioctl_recovery_list nid_list;
3511         struct cYAML *root = NULL, *nids = NULL;
3512         int rc, i;
3513         char err_str[LNET_MAX_STR_LEN];
3514
3515         snprintf(err_str, sizeof(err_str), "failed to print recovery queue\n");
3516
3517         LIBCFS_IOC_INIT_V2(nid_list, rlst_hdr);
3518         nid_list.rlst_type = type;
3519
3520         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_RECOVERY_QUEUE, &nid_list);
3521         if (rc) {
3522                 rc = errno;
3523                 goto out;
3524         }
3525
3526         if (nid_list.rlst_num_nids == 0)
3527                 goto out;
3528
3529         root = cYAML_create_object(NULL, NULL);
3530         if (root == NULL)
3531                 goto out;
3532
3533         nids = cYAML_create_object(root, name);
3534         if (nids == NULL)
3535                 goto out;
3536
3537         rc = -EINVAL;
3538
3539         for (i = 0; i < nid_list.rlst_num_nids; i++) {
3540                 char nidenum[LNET_MAX_STR_LEN];
3541                 snprintf(nidenum, sizeof(nidenum), "nid-%d", i);
3542                 if (!cYAML_create_string(nids, nidenum,
3543                         libcfs_nid2str(nid_list.rlst_nid_array[i])))
3544                         goto out;
3545         }
3546
3547         snprintf(err_str, sizeof(err_str), "success\n");
3548
3549         rc = 0;
3550
3551 out:
3552         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR) {
3553                 cYAML_free_tree(root);
3554         } else if (show_rc != NULL && *show_rc != NULL) {
3555                 struct cYAML *show_node;
3556                 /* find the net node, if one doesn't exist
3557                  * then insert one.  Otherwise add to the one there
3558                  */
3559                 show_node = cYAML_get_object_item(*show_rc, name);
3560                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
3561                         cYAML_insert_child(show_node, nids);
3562                         free(nids);
3563                         free(root);
3564                 } else if (show_node == NULL) {
3565                         cYAML_insert_sibling((*show_rc)->cy_child,
3566                                                 nids);
3567                         free(root);
3568                 } else {
3569                         cYAML_free_tree(root);
3570                 }
3571         } else {
3572                 *show_rc = root;
3573         }
3574
3575         cYAML_build_error(rc, seq_no, SHOW_CMD, name, err_str, err_rc);
3576
3577         return rc;
3578 }
3579
3580 int lustre_lnet_show_local_ni_recovq(int seq_no, struct cYAML **show_rc,
3581                                      struct cYAML **err_rc)
3582 {
3583         return show_recovery_queue(LNET_HEALTH_TYPE_LOCAL_NI, "local NI recovery",
3584                                    seq_no, show_rc, err_rc);
3585 }
3586
3587 int lustre_lnet_show_peer_ni_recovq(int seq_no, struct cYAML **show_rc,
3588                                     struct cYAML **err_rc)
3589 {
3590         return show_recovery_queue(LNET_HEALTH_TYPE_PEER_NI, "peer NI recovery",
3591                                    seq_no, show_rc, err_rc);
3592 }
3593
3594 int lustre_lnet_show_max_intf(int seq_no, struct cYAML **show_rc,
3595                               struct cYAML **err_rc)
3596 {
3597         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3598         char val[LNET_MAX_STR_LEN];
3599         int max_intf = -1, l_errno = 0;
3600         char err_str[LNET_MAX_STR_LEN];
3601
3602         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
3603
3604         rc = read_sysfs_file(modparam_path, "lnet_interfaces_max", val,
3605                              1, sizeof(val));
3606         if (rc) {
3607                 l_errno = -errno;
3608                 snprintf(err_str, sizeof(err_str),
3609                          "\"cannot get max interfaces: %d\"", rc);
3610         } else {
3611                 max_intf = atoi(val);
3612         }
3613
3614         return build_global_yaml_entry(err_str, sizeof(err_str), seq_no,
3615                                        "max_intf", max_intf, show_rc,
3616                                        err_rc, l_errno);
3617 }
3618
3619 int lustre_lnet_show_discovery(int seq_no, struct cYAML **show_rc,
3620                                struct cYAML **err_rc)
3621 {
3622         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3623         char val[LNET_MAX_STR_LEN];
3624         int discovery = -1, l_errno = 0;
3625         char err_str[LNET_MAX_STR_LEN];
3626
3627         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
3628
3629         rc = read_sysfs_file(modparam_path, "lnet_peer_discovery_disabled", val,
3630                              1, sizeof(val));
3631         if (rc) {
3632                 l_errno = -errno;
3633                 snprintf(err_str, sizeof(err_str),
3634                          "\"cannot get discovery setting: %d\"", rc);
3635         } else {
3636                 /*
3637                  * The kernel stores a discovery disabled value. User space
3638                  * shows whether discovery is enabled. So the value must be
3639                  * inverted.
3640                  */
3641                 discovery = !atoi(val);
3642         }
3643
3644         return build_global_yaml_entry(err_str, sizeof(err_str), seq_no,
3645                                        "discovery", discovery, show_rc,
3646                                        err_rc, l_errno);
3647 }
3648
3649 int lustre_lnet_show_numa_range(int seq_no, struct cYAML **show_rc,
3650                                 struct cYAML **err_rc)
3651 {
3652         return ioctl_show_global_values(IOC_LIBCFS_GET_NUMA_RANGE, seq_no,
3653                                         "numa_range", show_rc, err_rc);
3654 }
3655
3656 int lustre_lnet_show_stats(int seq_no, struct cYAML **show_rc,
3657                            struct cYAML **err_rc)
3658 {
3659         struct lnet_ioctl_lnet_stats data;
3660         struct lnet_counters *cntrs;
3661         int rc;
3662         int l_errno;
3663         char err_str[LNET_MAX_STR_LEN];
3664         struct cYAML *root = NULL, *stats = NULL;
3665
3666         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
3667
3668         LIBCFS_IOC_INIT_V2(data, st_hdr);
3669
3670         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_LNET_STATS, &data);
3671         if (rc) {
3672                 l_errno = errno;
3673                 snprintf(err_str,
3674                          sizeof(err_str),
3675                          "\"cannot get lnet statistics: %s\"",
3676                          strerror(l_errno));
3677                 rc = -l_errno;
3678                 goto out;
3679         }
3680
3681         rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3682
3683         cntrs = &data.st_cntrs;
3684
3685         root = cYAML_create_object(NULL, NULL);
3686         if (!root)
3687                 goto out;
3688
3689         stats = cYAML_create_object(root, "statistics");
3690         if (!stats)
3691                 goto out;
3692
3693         if (!cYAML_create_number(stats, "msgs_alloc",
3694                                  cntrs->lct_common.lcc_msgs_alloc))
3695                 goto out;
3696
3697         if (!cYAML_create_number(stats, "msgs_max",
3698                                  cntrs->lct_common.lcc_msgs_max))
3699                 goto out;
3700
3701         if (!cYAML_create_number(stats, "rst_alloc",
3702                                  cntrs->lct_health.lch_rst_alloc))
3703                 goto out;
3704
3705         if (!cYAML_create_number(stats, "errors",
3706                                  cntrs->lct_common.lcc_errors))
3707                 goto out;
3708
3709         if (!cYAML_create_number(stats, "send_count",
3710                                  cntrs->lct_common.lcc_send_count))
3711                 goto out;
3712
3713         if (!cYAML_create_number(stats, "resend_count",
3714                                  cntrs->lct_health.lch_resend_count))
3715                 goto out;
3716
3717         if (!cYAML_create_number(stats, "response_timeout_count",
3718                                  cntrs->lct_health.lch_response_timeout_count))
3719                 goto out;
3720
3721         if (!cYAML_create_number(stats, "local_interrupt_count",
3722                                  cntrs->lct_health.lch_local_interrupt_count))
3723                 goto out;
3724
3725         if (!cYAML_create_number(stats, "local_dropped_count",
3726                                  cntrs->lct_health.lch_local_dropped_count))
3727                 goto out;
3728
3729         if (!cYAML_create_number(stats, "local_aborted_count",
3730                                  cntrs->lct_health.lch_local_aborted_count))
3731                 goto out;
3732
3733         if (!cYAML_create_number(stats, "local_no_route_count",
3734                                  cntrs->lct_health.lch_local_no_route_count))
3735                 goto out;
3736
3737         if (!cYAML_create_number(stats, "local_timeout_count",
3738                                  cntrs->lct_health.lch_local_timeout_count))
3739                 goto out;
3740
3741         if (!cYAML_create_number(stats, "local_error_count",
3742                                  cntrs->lct_health.lch_local_error_count))
3743                 goto out;
3744
3745         if (!cYAML_create_number(stats, "remote_dropped_count",
3746                                  cntrs->lct_health.lch_remote_dropped_count))
3747                 goto out;
3748
3749         if (!cYAML_create_number(stats, "remote_error_count",
3750                                  cntrs->lct_health.lch_remote_error_count))
3751                 goto out;
3752
3753         if (!cYAML_create_number(stats, "remote_timeout_count",
3754                                  cntrs->lct_health.lch_remote_timeout_count))
3755                 goto out;
3756
3757         if (!cYAML_create_number(stats, "network_timeout_count",
3758                                  cntrs->lct_health.lch_network_timeout_count))
3759                 goto out;
3760
3761         if (!cYAML_create_number(stats, "recv_count",
3762                                  cntrs->lct_common.lcc_recv_count))
3763                 goto out;
3764
3765         if (!cYAML_create_number(stats, "route_count",
3766                                  cntrs->lct_common.lcc_route_count))
3767                 goto out;
3768
3769         if (!cYAML_create_number(stats, "drop_count",
3770                                  cntrs->lct_common.lcc_drop_count))
3771                 goto out;
3772
3773         if (!cYAML_create_number(stats, "send_length",
3774                                  cntrs->lct_common.lcc_send_length))
3775                 goto out;
3776
3777         if (!cYAML_create_number(stats, "recv_length",
3778                                  cntrs->lct_common.lcc_recv_length))
3779                 goto out;
3780
3781         if (!cYAML_create_number(stats, "route_length",
3782                                  cntrs->lct_common.lcc_route_length))
3783                 goto out;
3784
3785         if (!cYAML_create_number(stats, "drop_length",
3786                                  cntrs->lct_common.lcc_drop_length))
3787                 goto out;
3788
3789         if (!show_rc)
3790                 cYAML_print_tree(root);
3791
3792         snprintf(err_str, sizeof(err_str), "\"success\"");
3793         rc = LUSTRE_CFG_RC_NO_ERR;
3794 out:
3795         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR) {
3796                 cYAML_free_tree(root);
3797         } else if (show_rc != NULL && *show_rc != NULL) {
3798                 cYAML_insert_sibling((*show_rc)->cy_child,
3799                                         root->cy_child);
3800                 free(root);
3801         } else {
3802                 *show_rc = root;
3803         }
3804
3805         cYAML_build_error(rc, seq_no, SHOW_CMD, "statistics", err_str, err_rc);
3806
3807         return rc;
3808 }
3809
3810 typedef int (*cmd_handler_t)(struct cYAML *tree,
3811                              struct cYAML **show_rc,
3812                              struct cYAML **err_rc);
3813
3814 static int handle_yaml_config_route(struct cYAML *tree, struct cYAML **show_rc,
3815                                     struct cYAML **err_rc)
3816 {
3817         struct cYAML *net, *gw, *hop, *prio, *seq_no;
3818
3819         net = cYAML_get_object_item(tree, "net");
3820         gw = cYAML_get_object_item(tree, "gateway");
3821         hop = cYAML_get_object_item(tree, "hop");
3822         prio = cYAML_get_object_item(tree, "priority");
3823         seq_no = cYAML_get_object_item(tree, "seq_no");
3824
3825         return lustre_lnet_config_route((net) ? net->cy_valuestring : NULL,
3826                                         (gw) ? gw->cy_valuestring : NULL,
3827                                         (hop) ? hop->cy_valueint : -1,
3828                                         (prio) ? prio->cy_valueint : -1,
3829                                         (seq_no) ? seq_no->cy_valueint : -1,
3830                                         err_rc);
3831 }
3832
3833 static void yaml_free_string_array(char **array, int num)
3834 {
3835         int i;
3836         char **sub_array = array;
3837
3838         for (i = 0; i < num; i++) {
3839                 if (*sub_array != NULL)
3840                         free(*sub_array);
3841                 sub_array++;
3842         }
3843         if (array)
3844                 free(array);
3845 }
3846
3847 /*
3848  *    interfaces:
3849  *        0: <intf_name>['['<expr>']']
3850  *        1: <intf_name>['['<expr>']']
3851  */
3852 static int yaml_copy_intf_info(struct cYAML *intf_tree,
3853                                struct lnet_dlc_network_descr *nw_descr)
3854 {
3855         struct cYAML *child = NULL;
3856         int intf_num = 0, rc = LUSTRE_CFG_RC_NO_ERR;
3857         struct lnet_dlc_intf_descr *intf_descr, *tmp;
3858
3859         if (intf_tree == NULL || nw_descr == NULL)
3860                 return LUSTRE_CFG_RC_BAD_PARAM;
3861
3862         /* now grab all the interfaces and their cpts */
3863         child = intf_tree->cy_child;
3864         while (child != NULL) {
3865                 if (child->cy_valuestring == NULL) {
3866                         child = child->cy_next;
3867                         continue;
3868                 }
3869
3870                 if (strlen(child->cy_valuestring) >= LNET_MAX_STR_LEN)
3871                         goto failed;
3872
3873                 rc = lustre_lnet_add_intf_descr(&nw_descr->nw_intflist,
3874                                                 child->cy_valuestring,
3875                                                 strlen(child->cy_valuestring));
3876                 if (rc != LUSTRE_CFG_RC_NO_ERR)
3877                         goto failed;
3878
3879                 intf_num++;
3880                 child = child->cy_next;
3881         }
3882
3883         if (intf_num == 0)
3884                 return LUSTRE_CFG_RC_MISSING_PARAM;
3885
3886         return intf_num;
3887
3888 failed:
3889         list_for_each_entry_safe(intf_descr, tmp, &nw_descr->nw_intflist,
3890                                  intf_on_network) {
3891                 list_del(&intf_descr->intf_on_network);
3892                 free_intf_descr(intf_descr);
3893         }
3894
3895         return rc;
3896 }
3897
3898 static bool
3899 yaml_extract_cmn_tunables(struct cYAML *tree,
3900                           struct lnet_ioctl_config_lnd_cmn_tunables *tunables,
3901                           struct cfs_expr_list **global_cpts)
3902 {
3903         struct cYAML *tun, *item, *smp;
3904         int rc;
3905
3906         tun = cYAML_get_object_item(tree, "tunables");
3907         if (tun != NULL) {
3908                 item = cYAML_get_object_item(tun, "peer_timeout");
3909                 if (item != NULL)
3910                         tunables->lct_peer_timeout = item->cy_valueint;
3911                 item = cYAML_get_object_item(tun, "peer_credits");
3912                 if (item != NULL)
3913                         tunables->lct_peer_tx_credits = item->cy_valueint;
3914                 item = cYAML_get_object_item(tun, "peer_buffer_credits");
3915                 if (item != NULL)
3916                         tunables->lct_peer_rtr_credits = item->cy_valueint;
3917                 item = cYAML_get_object_item(tun, "credits");
3918                 if (item != NULL)
3919                         tunables->lct_max_tx_credits = item->cy_valueint;
3920                 smp = cYAML_get_object_item(tun, "CPT");
3921                 if (smp != NULL) {
3922                         rc = cfs_expr_list_parse(smp->cy_valuestring,
3923                                                  strlen(smp->cy_valuestring),
3924                                                  0, UINT_MAX, global_cpts);
3925                         if (rc != 0)
3926                                 *global_cpts = NULL;
3927                 }
3928
3929                 return true;
3930         }
3931
3932         return false;
3933 }
3934
3935 static bool
3936 yaml_extract_tunables(struct cYAML *tree,
3937                       struct lnet_ioctl_config_lnd_tunables *tunables,
3938                       struct cfs_expr_list **global_cpts,
3939                       __u32 net_type)
3940 {
3941         bool rc;
3942
3943         rc = yaml_extract_cmn_tunables(tree, &tunables->lt_cmn,
3944                                        global_cpts);
3945
3946         if (!rc)
3947                 return rc;
3948
3949         lustre_yaml_extract_lnd_tunables(tree, net_type,
3950                                          &tunables->lt_tun);
3951
3952         return rc;
3953 }
3954
3955 /*
3956  * net:
3957  *    - net type: <net>[<NUM>]
3958   *      local NI(s):
3959  *        - nid: <ip>@<net>[<NUM>]
3960  *          status: up
3961  *          interfaces:
3962  *               0: <intf_name>['['<expr>']']
3963  *               1: <intf_name>['['<expr>']']
3964  *        tunables:
3965  *               peer_timeout: <NUM>
3966  *               peer_credits: <NUM>
3967  *               peer_buffer_credits: <NUM>
3968  *               credits: <NUM>
3969 *         lnd tunables:
3970  *               peercredits_hiw: <NUM>
3971  *               map_on_demand: <NUM>
3972  *               concurrent_sends: <NUM>
3973  *               fmr_pool_size: <NUM>
3974  *               fmr_flush_trigger: <NUM>
3975  *               fmr_cache: <NUM>
3976  *
3977  * At least one interface is required. If no interfaces are provided the
3978  * network interface can not be configured.
3979  */
3980 static int handle_yaml_config_ni(struct cYAML *tree, struct cYAML **show_rc,
3981                                  struct cYAML **err_rc)
3982 {
3983         struct cYAML *net, *intf, *seq_no, *ip2net = NULL, *local_nis = NULL,
3984                      *item = NULL;
3985         int num_entries = 0, rc;
3986         struct lnet_dlc_network_descr nw_descr;
3987         struct cfs_expr_list *global_cpts = NULL;
3988         struct lnet_ioctl_config_lnd_tunables tunables;
3989         bool found = false;
3990
3991         memset(&tunables, 0, sizeof(tunables));
3992
3993         INIT_LIST_HEAD(&nw_descr.network_on_rule);
3994         INIT_LIST_HEAD(&nw_descr.nw_intflist);
3995
3996         ip2net = cYAML_get_object_item(tree, "ip2net");
3997         net = cYAML_get_object_item(tree, "net type");
3998         if (net)
3999                 nw_descr.nw_id = libcfs_str2net(net->cy_valuestring);
4000         else
4001                 nw_descr.nw_id = LOLND;
4002
4003         /*
4004          * if neither net nor ip2nets are present, then we can not
4005          * configure the network.
4006          */
4007         if (!net && !ip2net)
4008                 return LUSTRE_CFG_RC_MISSING_PARAM;
4009
4010         local_nis = cYAML_get_object_item(tree, "local NI(s)");
4011         if (local_nis == NULL)
4012                 return LUSTRE_CFG_RC_MISSING_PARAM;
4013
4014         if (!cYAML_is_sequence(local_nis))
4015                 return LUSTRE_CFG_RC_BAD_PARAM;
4016
4017         while (cYAML_get_next_seq_item(local_nis, &item) != NULL) {
4018                 intf = cYAML_get_object_item(item, "interfaces");
4019                 if (intf == NULL)
4020                         continue;
4021                 num_entries = yaml_copy_intf_info(intf, &nw_descr);
4022                 if (num_entries <= 0) {
4023                         cYAML_build_error(num_entries, -1, "ni", "add",
4024                                         "bad interface list",
4025                                         err_rc);
4026                         return LUSTRE_CFG_RC_BAD_PARAM;
4027                 }
4028         }
4029
4030         found = yaml_extract_tunables(tree, &tunables, &global_cpts,
4031                                       LNET_NETTYP(nw_descr.nw_id));
4032         seq_no = cYAML_get_object_item(tree, "seq_no");
4033
4034         rc = lustre_lnet_config_ni(&nw_descr,
4035                                    global_cpts,
4036                                    (ip2net) ? ip2net->cy_valuestring : NULL,
4037                                    (found) ? &tunables: NULL,
4038                                    (seq_no) ? seq_no->cy_valueint : -1,
4039                                    err_rc);
4040
4041         if (global_cpts != NULL)
4042                 cfs_expr_list_free(global_cpts);
4043
4044         return rc;
4045 }
4046
4047 /*
4048  * ip2nets:
4049  *  - net-spec: <tcp|o2ib|gni>[NUM]
4050  *    interfaces:
4051  *        0: <intf name>['['<expr>']']
4052  *        1: <intf name>['['<expr>']']
4053  *    ip-range:
4054  *        0: <expr.expr.expr.expr>
4055  *        1: <expr.expr.expr.expr>
4056  */
4057 static int handle_yaml_config_ip2nets(struct cYAML *tree,
4058                                       struct cYAML **show_rc,
4059                                       struct cYAML **err_rc)
4060 {
4061         struct cYAML *net, *ip_range, *item = NULL, *intf = NULL,
4062                      *seq_no = NULL;
4063         struct lustre_lnet_ip2nets ip2nets;
4064         struct lustre_lnet_ip_range_descr *ip_range_descr = NULL,
4065                                           *tmp = NULL;
4066         int rc = LUSTRE_CFG_RC_NO_ERR;
4067         struct cfs_expr_list *global_cpts = NULL;
4068         struct cfs_expr_list *el, *el_tmp;
4069         struct lnet_ioctl_config_lnd_tunables tunables;
4070         struct lnet_dlc_intf_descr *intf_descr, *intf_tmp;
4071         bool found = false;
4072
4073         memset(&tunables, 0, sizeof(tunables));
4074
4075         /* initialize all lists */
4076         INIT_LIST_HEAD(&ip2nets.ip2nets_ip_ranges);
4077         INIT_LIST_HEAD(&ip2nets.ip2nets_net.network_on_rule);
4078         INIT_LIST_HEAD(&ip2nets.ip2nets_net.nw_intflist);
4079
4080         net = cYAML_get_object_item(tree, "net-spec");
4081         if (net == NULL)
4082                 return LUSTRE_CFG_RC_BAD_PARAM;
4083
4084         if (net != NULL && net->cy_valuestring == NULL)
4085                 return LUSTRE_CFG_RC_BAD_PARAM;
4086
4087         /* assign the network id */
4088         ip2nets.ip2nets_net.nw_id = libcfs_str2net(net->cy_valuestring);
4089         if (ip2nets.ip2nets_net.nw_id == LNET_NID_ANY)
4090                 return LUSTRE_CFG_RC_BAD_PARAM;
4091
4092         seq_no = cYAML_get_object_item(tree, "seq_no");
4093
4094         intf = cYAML_get_object_item(tree, "interfaces");
4095         if (intf != NULL) {
4096                 rc = yaml_copy_intf_info(intf, &ip2nets.ip2nets_net);
4097                 if (rc <= 0)
4098                         return LUSTRE_CFG_RC_BAD_PARAM;
4099         }
4100
4101         ip_range = cYAML_get_object_item(tree, "ip-range");
4102         if (ip_range != NULL) {
4103                 item = ip_range->cy_child;
4104                 while (item != NULL) {
4105                         if (item->cy_valuestring == NULL) {
4106                                 item = item->cy_next;
4107                                 continue;
4108                         }
4109
4110                         rc = lustre_lnet_add_ip_range(&ip2nets.ip2nets_ip_ranges,
4111                                                       item->cy_valuestring);
4112
4113                         if (rc != LUSTRE_CFG_RC_NO_ERR)
4114                                 goto out;
4115
4116                         item = item->cy_next;
4117                 }
4118         }
4119
4120         found = yaml_extract_tunables(tree, &tunables, &global_cpts,
4121                                       LNET_NETTYP(ip2nets.ip2nets_net.nw_id));
4122
4123         rc = lustre_lnet_config_ip2nets(&ip2nets,
4124                         (found) ? &tunables : NULL,
4125                         global_cpts,
4126                         (seq_no) ? seq_no->cy_valueint : -1,
4127                         err_rc);
4128
4129         /*
4130          * don't stop because there was no match. Continue processing the
4131          * rest of the rules. If non-match then nothing is configured
4132          */
4133         if (rc == LUSTRE_CFG_RC_NO_MATCH)
4134                 rc = LUSTRE_CFG_RC_NO_ERR;
4135 out:
4136         list_for_each_entry_safe(intf_descr, intf_tmp,
4137                                  &ip2nets.ip2nets_net.nw_intflist,
4138                                  intf_on_network) {
4139                 list_del(&intf_descr->intf_on_network);
4140                 free_intf_descr(intf_descr);
4141         }
4142
4143         list_for_each_entry_safe(ip_range_descr, tmp,
4144                                  &ip2nets.ip2nets_ip_ranges,
4145                                  ipr_entry) {
4146                 list_del(&ip_range_descr->ipr_entry);
4147                 list_for_each_entry_safe(el, el_tmp, &ip_range_descr->ipr_expr,
4148                                          el_link) {
4149                         list_del(&el->el_link);
4150                         cfs_expr_list_free(el);
4151                 }
4152                 free(ip_range_descr);
4153         }
4154
4155         return rc;
4156 }
4157
4158 static int handle_yaml_del_ni(struct cYAML *tree, struct cYAML **show_rc,
4159                               struct cYAML **err_rc)
4160 {
4161         struct cYAML *net = NULL, *intf = NULL, *seq_no = NULL, *item = NULL,
4162                      *local_nis = NULL;
4163         int num_entries, rc;
4164         struct lnet_dlc_network_descr nw_descr;
4165
4166         INIT_LIST_HEAD(&nw_descr.network_on_rule);
4167         INIT_LIST_HEAD(&nw_descr.nw_intflist);
4168
4169         net = cYAML_get_object_item(tree, "net type");
4170         if (net != NULL)
4171                 nw_descr.nw_id = libcfs_str2net(net->cy_valuestring);
4172
4173         local_nis = cYAML_get_object_item(tree, "local NI(s)");
4174         if (local_nis == NULL)
4175                 return LUSTRE_CFG_RC_MISSING_PARAM;
4176
4177         if (!cYAML_is_sequence(local_nis))
4178                 return LUSTRE_CFG_RC_BAD_PARAM;
4179
4180         while (cYAML_get_next_seq_item(local_nis, &item) != NULL) {
4181                 intf = cYAML_get_object_item(item, "interfaces");
4182                 if (intf == NULL)
4183                         continue;
4184                 num_entries = yaml_copy_intf_info(intf, &nw_descr);
4185                 if (num_entries <= 0) {
4186                         cYAML_build_error(num_entries, -1, "ni", "add",
4187                                         "bad interface list",
4188                                         err_rc);
4189                         return LUSTRE_CFG_RC_BAD_PARAM;
4190                 }
4191         }
4192
4193         seq_no = cYAML_get_object_item(tree, "seq_no");
4194
4195         rc = lustre_lnet_del_ni((net) ? &nw_descr : NULL,
4196                                 (seq_no) ? seq_no->cy_valueint : -1,
4197                                 err_rc);
4198
4199         return rc;
4200 }
4201
4202 static int yaml_copy_peer_nids(struct cYAML *nids_entry, char ***nidsppp,
4203                                char *prim_nid, bool del)
4204 {
4205         struct cYAML *child = NULL, *entry = NULL;
4206         char **nids = NULL;
4207         int num = 0, rc = LUSTRE_CFG_RC_NO_ERR;
4208
4209         if (cYAML_is_sequence(nids_entry)) {
4210                 while (cYAML_get_next_seq_item(nids_entry, &child)) {
4211                         entry = cYAML_get_object_item(child, "nid");
4212                         /* don't count an empty entry */
4213                         if (!entry || !entry->cy_valuestring)
4214                                 continue;
4215
4216                         if (prim_nid &&
4217                             (strcmp(entry->cy_valuestring, prim_nid)
4218                                         == 0) && del) {
4219                                 /*
4220                                  * primary nid is present in the list of
4221                                  * nids so that means we want to delete
4222                                  * the entire peer, so no need to go
4223                                  * further. Just delete the entire peer.
4224                                  */
4225                                 return 0;
4226                         }
4227
4228                         num++;
4229                 }
4230         }
4231
4232         if (num == 0)
4233                 return LUSTRE_CFG_RC_MISSING_PARAM;
4234
4235         nids = calloc(sizeof(*nids), num);
4236         if (!nids)
4237                 return LUSTRE_CFG_RC_OUT_OF_MEM;
4238
4239         /* now grab all the nids */
4240         num = 0;
4241         child = NULL;
4242         while (cYAML_get_next_seq_item(nids_entry, &child)) {
4243                 entry = cYAML_get_object_item(child, "nid");
4244                 if (!entry || !entry->cy_valuestring)
4245                         continue;
4246
4247                 nids[num] = calloc(strlen(entry->cy_valuestring) + 1, 1);
4248                 if (!nids[num]) {
4249                         rc = LUSTRE_CFG_RC_OUT_OF_MEM;
4250                         goto failed;
4251                 }
4252                 strncpy(nids[num], entry->cy_valuestring,
4253                         strlen(entry->cy_valuestring));
4254                 num++;
4255         }
4256         rc = num;
4257
4258         *nidsppp = nids;
4259         return rc;
4260
4261 failed:
4262         if (nids != NULL)
4263                 yaml_free_string_array(nids, num);
4264         *nidsppp = NULL;
4265         return rc;
4266 }
4267
4268 static int handle_yaml_config_peer(struct cYAML *tree, struct cYAML **show_rc,
4269                                    struct cYAML **err_rc)
4270 {
4271         char **nids = NULL;
4272         int num, rc;
4273         struct cYAML *seq_no, *prim_nid, *mr, *ip2nets, *peer_nis;
4274         char err_str[LNET_MAX_STR_LEN];
4275         bool mr_value;
4276
4277         seq_no = cYAML_get_object_item(tree, "seq_no");
4278         prim_nid = cYAML_get_object_item(tree, "primary nid");
4279         mr = cYAML_get_object_item(tree, "Multi-Rail");
4280         ip2nets = cYAML_get_object_item(tree, "ip2nets");
4281         peer_nis = cYAML_get_object_item(tree, "peer ni");
4282
4283         if (ip2nets && (prim_nid || peer_nis)) {
4284                 rc = LUSTRE_CFG_RC_BAD_PARAM;
4285                 snprintf(err_str, sizeof(err_str),
4286                          "ip2nets can not be specified along side prim_nid"
4287                          " or peer ni fields");
4288                 cYAML_build_error(rc, (seq_no) ? seq_no->cy_valueint : -1,
4289                                   ADD_CMD, "peer", err_str, err_rc);
4290                 return rc;
4291         }
4292
4293         if (!mr)
4294                 mr_value = true;
4295         else {
4296                 if (!mr->cy_valuestring || !strcmp(mr->cy_valuestring, "True"))
4297                         mr_value = true;
4298                 else if (!strcmp(mr->cy_valuestring, "False"))
4299                         mr_value = false;
4300                 else {
4301                         rc = LUSTRE_CFG_RC_BAD_PARAM;
4302                         snprintf(err_str, sizeof(err_str), "Bad MR value");
4303                         cYAML_build_error(rc, (seq_no) ? seq_no->cy_valueint : -1,
4304                                           ADD_CMD, "peer", err_str, err_rc);
4305                         return rc;
4306                 }
4307         }
4308
4309         num = yaml_copy_peer_nids((ip2nets) ? ip2nets : peer_nis, &nids,
4310                                   (prim_nid) ? prim_nid->cy_valuestring : NULL,
4311                                    false);
4312
4313         if (num < 0) {
4314                 snprintf(err_str, sizeof(err_str),
4315                          "error copying nids from YAML block");
4316                 cYAML_build_error(num, (seq_no) ? seq_no->cy_valueint : -1,
4317                                   ADD_CMD, "peer", err_str, err_rc);
4318                 return num;
4319         }
4320
4321         rc = lustre_lnet_config_peer_nid((prim_nid) ? prim_nid->cy_valuestring : NULL,
4322                                          nids, num, mr_value,
4323                                          (ip2nets) ? true : false,
4324                                          (seq_no) ? seq_no->cy_valueint : -1,
4325                                          err_rc);
4326
4327         yaml_free_string_array(nids, num);
4328         return rc;
4329 }
4330
4331 static int handle_yaml_del_peer(struct cYAML *tree, struct cYAML **show_rc,
4332                                 struct cYAML **err_rc)
4333 {
4334         char **nids = NULL;
4335         int num, rc;
4336         struct cYAML *seq_no, *prim_nid, *ip2nets, *peer_nis;
4337         char err_str[LNET_MAX_STR_LEN];
4338
4339         seq_no = cYAML_get_object_item(tree, "seq_no");
4340         prim_nid = cYAML_get_object_item(tree, "primary nid");
4341         ip2nets = cYAML_get_object_item(tree, "ip2nets");
4342         peer_nis = cYAML_get_object_item(tree, "peer ni");
4343
4344         if (ip2nets && (prim_nid || peer_nis)) {
4345                 rc = LUSTRE_CFG_RC_BAD_PARAM;
4346                 snprintf(err_str, sizeof(err_str),
4347                          "ip2nets can not be specified along side prim_nid"
4348                          " or peer ni fields");
4349                 cYAML_build_error(rc, (seq_no) ? seq_no->cy_valueint : -1,
4350                                   DEL_CMD, "peer", err_str, err_rc);
4351                 return rc;
4352         }
4353
4354         num = yaml_copy_peer_nids((ip2nets) ? ip2nets : peer_nis , &nids,
4355                                   (prim_nid) ? prim_nid->cy_valuestring : NULL,
4356                                   true);
4357         if (num < 0) {
4358                 snprintf(err_str, sizeof(err_str),
4359                          "error copying nids from YAML block");
4360                 cYAML_build_error(num, (seq_no) ? seq_no->cy_valueint : -1,
4361                                   ADD_CMD, "peer", err_str, err_rc);
4362                 return num;
4363         }
4364
4365         rc = lustre_lnet_del_peer_nid((prim_nid) ? prim_nid->cy_valuestring : NULL,
4366                                       nids, num, (ip2nets) ? true : false,
4367                                       (seq_no) ? seq_no->cy_valueint : -1,
4368                                       err_rc);
4369
4370         yaml_free_string_array(nids, num);
4371         return rc;
4372 }
4373
4374 static int handle_yaml_config_buffers(struct cYAML *tree,
4375                                       struct cYAML **show_rc,
4376                                       struct cYAML **err_rc)
4377 {
4378         int rc;
4379         struct cYAML *tiny, *small, *large, *seq_no;
4380
4381         tiny = cYAML_get_object_item(tree, "tiny");
4382         small = cYAML_get_object_item(tree, "small");
4383         large = cYAML_get_object_item(tree, "large");
4384         seq_no = cYAML_get_object_item(tree, "seq_no");
4385
4386         rc = lustre_lnet_config_buffers((tiny) ? tiny->cy_valueint : -1,
4387                                         (small) ? small->cy_valueint : -1,
4388                                         (large) ? large->cy_valueint : -1,
4389                                         (seq_no) ? seq_no->cy_valueint : -1,
4390                                         err_rc);
4391
4392         return rc;
4393 }
4394
4395 static int handle_yaml_config_routing(struct cYAML *tree,
4396                                       struct cYAML **show_rc,
4397                                       struct cYAML **err_rc)
4398 {
4399         int rc = LUSTRE_CFG_RC_NO_ERR;
4400         struct cYAML *seq_no, *enable;
4401
4402         seq_no = cYAML_get_object_item(tree, "seq_no");
4403         enable = cYAML_get_object_item(tree, "enable");
4404
4405         if (enable) {
4406                 rc = lustre_lnet_enable_routing(enable->cy_valueint,
4407                                                 (seq_no) ?
4408                                                     seq_no->cy_valueint : -1,
4409                                                 err_rc);
4410         }
4411
4412         return rc;
4413 }
4414
4415 static int handle_yaml_del_route(struct cYAML *tree, struct cYAML **show_rc,
4416                                  struct cYAML **err_rc)
4417 {
4418         struct cYAML *net;
4419         struct cYAML *gw;
4420         struct cYAML *seq_no;
4421
4422         net = cYAML_get_object_item(tree, "net");
4423         gw = cYAML_get_object_item(tree, "gateway");
4424         seq_no = cYAML_get_object_item(tree, "seq_no");
4425
4426         return lustre_lnet_del_route((net) ? net->cy_valuestring : NULL,
4427                                      (gw) ? gw->cy_valuestring : NULL,
4428                                      (seq_no) ? seq_no->cy_valueint : -1,
4429                                      err_rc);
4430 }
4431
4432 static int handle_yaml_del_routing(struct cYAML *tree, struct cYAML **show_rc,
4433                                    struct cYAML **err_rc)
4434 {
4435         struct cYAML *seq_no;
4436
4437         seq_no = cYAML_get_object_item(tree, "seq_no");
4438
4439         return lustre_lnet_enable_routing(0, (seq_no) ?
4440                                                 seq_no->cy_valueint : -1,
4441                                         err_rc);
4442 }
4443
4444 static int handle_yaml_show_route(struct cYAML *tree, struct cYAML **show_rc,
4445                                   struct cYAML **err_rc)
4446 {
4447         struct cYAML *net;
4448         struct cYAML *gw;
4449         struct cYAML *hop;
4450         struct cYAML *prio;
4451         struct cYAML *detail;
4452         struct cYAML *seq_no;
4453
4454         net = cYAML_get_object_item(tree, "net");
4455         gw = cYAML_get_object_item(tree, "gateway");
4456         hop = cYAML_get_object_item(tree, "hop");
4457         prio = cYAML_get_object_item(tree, "priority");
4458         detail = cYAML_get_object_item(tree, "detail");
4459         seq_no = cYAML_get_object_item(tree, "seq_no");
4460
4461         return lustre_lnet_show_route((net) ? net->cy_valuestring : NULL,
4462                                       (gw) ? gw->cy_valuestring : NULL,
4463                                       (hop) ? hop->cy_valueint : -1,
4464                                       (prio) ? prio->cy_valueint : -1,
4465                                       (detail) ? detail->cy_valueint : 0,
4466                                       (seq_no) ? seq_no->cy_valueint : -1,
4467                                       show_rc, err_rc, false);
4468 }
4469
4470 static int handle_yaml_show_net(struct cYAML *tree, struct cYAML **show_rc,
4471                                 struct cYAML **err_rc)
4472 {
4473         struct cYAML *net, *detail, *seq_no;
4474
4475         net = cYAML_get_object_item(tree, "net");
4476         detail = cYAML_get_object_item(tree, "detail");
4477         seq_no = cYAML_get_object_item(tree, "seq_no");
4478
4479         return lustre_lnet_show_net((net) ? net->cy_valuestring : NULL,
4480                                     (detail) ? detail->cy_valueint : 0,
4481                                     (seq_no) ? seq_no->cy_valueint : -1,
4482                                     show_rc, err_rc, false);
4483 }
4484
4485 static int handle_yaml_show_routing(struct cYAML *tree, struct cYAML **show_rc,
4486                                     struct cYAML **err_rc)
4487 {
4488         struct cYAML *seq_no;
4489
4490         seq_no = cYAML_get_object_item(tree, "seq_no");
4491
4492         return lustre_lnet_show_routing((seq_no) ? seq_no->cy_valueint : -1,
4493                                         show_rc, err_rc, false);
4494 }
4495
4496 static int handle_yaml_show_peers(struct cYAML *tree, struct cYAML **show_rc,
4497                                   struct cYAML **err_rc)
4498 {
4499         struct cYAML *seq_no, *nid, *detail;
4500
4501         seq_no = cYAML_get_object_item(tree, "seq_no");
4502         detail = cYAML_get_object_item(tree, "detail");
4503         nid = cYAML_get_object_item(tree, "nid");
4504
4505         return lustre_lnet_show_peer((nid) ? nid->cy_valuestring : NULL,
4506                                      (detail) ? detail->cy_valueint : 0,
4507                                      (seq_no) ? seq_no->cy_valueint : -1,
4508                                      show_rc, err_rc, false);
4509 }
4510
4511 static int handle_yaml_show_stats(struct cYAML *tree, struct cYAML **show_rc,
4512                                   struct cYAML **err_rc)
4513 {
4514         struct cYAML *seq_no;
4515
4516         seq_no = cYAML_get_object_item(tree, "seq_no");
4517
4518         return lustre_lnet_show_stats((seq_no) ? seq_no->cy_valueint : -1,
4519                                       show_rc, err_rc);
4520 }
4521
4522 static int handle_yaml_config_numa(struct cYAML *tree, struct cYAML **show_rc,
4523                                   struct cYAML **err_rc)
4524 {
4525         struct cYAML *seq_no, *range;
4526
4527         seq_no = cYAML_get_object_item(tree, "seq_no");
4528         range = cYAML_get_object_item(tree, "range");
4529
4530         return lustre_lnet_config_numa_range(range ? range->cy_valueint : -1,
4531                                              seq_no ? seq_no->cy_valueint : -1,
4532                                              err_rc);
4533 }
4534
4535 static int handle_yaml_del_numa(struct cYAML *tree, struct cYAML **show_rc,
4536                                struct cYAML **err_rc)
4537 {
4538         struct cYAML *seq_no;
4539
4540         seq_no = cYAML_get_object_item(tree, "seq_no");
4541
4542         return lustre_lnet_config_numa_range(0, seq_no ? seq_no->cy_valueint : -1,
4543                                              err_rc);
4544 }
4545
4546 static int handle_yaml_show_numa(struct cYAML *tree, struct cYAML **show_rc,
4547                                 struct cYAML **err_rc)
4548 {
4549         struct cYAML *seq_no;
4550
4551         seq_no = cYAML_get_object_item(tree, "seq_no");
4552
4553         return lustre_lnet_show_numa_range(seq_no ? seq_no->cy_valueint : -1,
4554                                            show_rc, err_rc);
4555 }
4556
4557 static int handle_yaml_config_global_settings(struct cYAML *tree,
4558                                               struct cYAML **show_rc,
4559                                               struct cYAML **err_rc)
4560 {
4561         struct cYAML *max_intf, *numa, *discovery, *retry, *tto, *seq_no,
4562                      *sen, *recov;
4563         int rc = 0;
4564
4565         seq_no = cYAML_get_object_item(tree, "seq_no");
4566         max_intf = cYAML_get_object_item(tree, "max_intf");
4567         if (max_intf)
4568                 rc = lustre_lnet_config_max_intf(max_intf->cy_valueint,
4569                                                  seq_no ? seq_no->cy_valueint
4570                                                         : -1,
4571                                                  err_rc);
4572
4573         numa = cYAML_get_object_item(tree, "numa_range");
4574         if (numa)
4575                 rc = lustre_lnet_config_numa_range(numa->cy_valueint,
4576                                                    seq_no ? seq_no->cy_valueint
4577                                                         : -1,
4578                                                    err_rc);
4579
4580         discovery = cYAML_get_object_item(tree, "discovery");
4581         if (discovery)
4582                 rc = lustre_lnet_config_discovery(discovery->cy_valueint,
4583                                                   seq_no ? seq_no->cy_valueint
4584                                                         : -1,
4585                                                   err_rc);
4586
4587         retry = cYAML_get_object_item(tree, "retry_count");
4588         if (retry)
4589                 rc = lustre_lnet_config_retry_count(retry->cy_valueint,
4590                                                     seq_no ? seq_no->cy_valueint
4591                                                         : -1,
4592                                                     err_rc);
4593
4594         tto = cYAML_get_object_item(tree, "transaction_timeout");
4595         if (tto)
4596                 rc = lustre_lnet_config_transaction_to(tto->cy_valueint,
4597                                                        seq_no ? seq_no->cy_valueint
4598                                                                 : -1,
4599                                                        err_rc);
4600
4601         sen = cYAML_get_object_item(tree, "health_sensitivity");
4602         if (sen)
4603                 rc = lustre_lnet_config_hsensitivity(sen->cy_valueint,
4604                                                      seq_no ? seq_no->cy_valueint
4605                                                         : -1,
4606                                                      err_rc);
4607
4608         recov = cYAML_get_object_item(tree, "recovery_interval");
4609         if (recov)
4610                 rc = lustre_lnet_config_recov_intrv(recov->cy_valueint,
4611                                                     seq_no ? seq_no->cy_valueint
4612                                                         : -1,
4613                                                     err_rc);
4614
4615         return rc;
4616 }
4617
4618 static int handle_yaml_del_global_settings(struct cYAML *tree,
4619                                            struct cYAML **show_rc,
4620                                            struct cYAML **err_rc)
4621 {
4622         struct cYAML *max_intf, *numa, *discovery, *seq_no;
4623         int rc = 0;
4624
4625         seq_no = cYAML_get_object_item(tree, "seq_no");
4626         max_intf = cYAML_get_object_item(tree, "max_intf");
4627         if (max_intf)
4628                 rc = lustre_lnet_config_max_intf(LNET_INTERFACES_MAX_DEFAULT,
4629                                                  seq_no ? seq_no->cy_valueint
4630                                                         : -1,
4631                                                  err_rc);
4632
4633         numa = cYAML_get_object_item(tree, "numa_range");
4634         if (numa)
4635                 rc = lustre_lnet_config_numa_range(0,
4636                                                    seq_no ? seq_no->cy_valueint
4637                                                         : -1,
4638                                                    err_rc);
4639
4640         /* peer discovery is enabled by default */
4641         discovery = cYAML_get_object_item(tree, "discovery");
4642         if (discovery)
4643                 rc = lustre_lnet_config_discovery(1,
4644                                                   seq_no ? seq_no->cy_valueint
4645                                                         : -1,
4646                                                   err_rc);
4647
4648         return rc;
4649 }
4650
4651 static int handle_yaml_show_global_settings(struct cYAML *tree,
4652                                             struct cYAML **show_rc,
4653                                             struct cYAML **err_rc)
4654 {
4655         struct cYAML *max_intf, *numa, *discovery, *retry, *tto, *seq_no,
4656                      *sen, *recov;
4657         int rc = 0;
4658
4659         seq_no = cYAML_get_object_item(tree, "seq_no");
4660         max_intf = cYAML_get_object_item(tree, "max_intf");
4661         if (max_intf)
4662                 rc = lustre_lnet_show_max_intf(seq_no ? seq_no->cy_valueint
4663                                                         : -1,
4664                                                 show_rc, err_rc);
4665
4666         numa = cYAML_get_object_item(tree, "numa_range");
4667         if (numa)
4668                 rc = lustre_lnet_show_numa_range(seq_no ? seq_no->cy_valueint
4669                                                         : -1,
4670                                                  show_rc, err_rc);
4671
4672         discovery = cYAML_get_object_item(tree, "discovery");
4673         if (discovery)
4674                 rc = lustre_lnet_show_discovery(seq_no ? seq_no->cy_valueint
4675                                                         : -1,
4676                                                 show_rc, err_rc);
4677
4678         retry = cYAML_get_object_item(tree, "retry_count");
4679         if (retry)
4680                 rc = lustre_lnet_show_retry_count(seq_no ? seq_no->cy_valueint
4681                                                         : -1,
4682                                                   show_rc, err_rc);
4683
4684         tto = cYAML_get_object_item(tree, "transaction_timeout");
4685         if (tto)
4686                 rc = lustre_lnet_show_transaction_to(seq_no ? seq_no->cy_valueint
4687                                                         : -1,
4688                                                      show_rc, err_rc);
4689
4690         sen = cYAML_get_object_item(tree, "health_sensitivity");
4691         if (sen)
4692                 rc = lustre_lnet_show_hsensitivity(seq_no ? seq_no->cy_valueint
4693                                                         : -1,
4694                                                      show_rc, err_rc);
4695
4696         recov = cYAML_get_object_item(tree, "recovery_interval");
4697         if (recov)
4698                 rc = lustre_lnet_show_recov_intrv(seq_no ? seq_no->cy_valueint
4699                                                         : -1,
4700                                                   show_rc, err_rc);
4701
4702         return rc;
4703 }
4704
4705 static int handle_yaml_ping(struct cYAML *tree, struct cYAML **show_rc,
4706                             struct cYAML **err_rc)
4707 {
4708         struct cYAML *seq_no, *nid, *timeout;
4709
4710         seq_no = cYAML_get_object_item(tree, "seq_no");
4711         nid = cYAML_get_object_item(tree, "primary nid");
4712         timeout = cYAML_get_object_item(tree, "timeout");
4713
4714         return lustre_lnet_ping_nid((nid) ? nid->cy_valuestring : NULL,
4715                                     (timeout) ? timeout->cy_valueint : 1000,
4716                                     (seq_no) ? seq_no->cy_valueint : -1,
4717                                     show_rc, err_rc);
4718 }
4719
4720 static int handle_yaml_discover(struct cYAML *tree, struct cYAML **show_rc,
4721                                 struct cYAML **err_rc)
4722 {
4723         struct cYAML *seq_no, *nid, *force;
4724
4725         seq_no = cYAML_get_object_item(tree, "seq_no");
4726         nid = cYAML_get_object_item(tree, "primary nid");
4727         force = cYAML_get_object_item(tree, "force");
4728
4729         return lustre_lnet_discover_nid((nid) ? nid->cy_valuestring : NULL,
4730                                         (force) ? force->cy_valueint : 0,
4731                                         (seq_no) ? seq_no->cy_valueint : -1,
4732                                         show_rc, err_rc);
4733 }
4734
4735 static int handle_yaml_no_op()
4736 {
4737         return LUSTRE_CFG_RC_NO_ERR;
4738 }
4739
4740 struct lookup_cmd_hdlr_tbl {
4741         char *name;
4742         cmd_handler_t cb;
4743 };
4744
4745 static struct lookup_cmd_hdlr_tbl lookup_config_tbl[] = {
4746         { .name = "route",      .cb = handle_yaml_config_route },
4747         { .name = "net",        .cb = handle_yaml_config_ni },
4748         { .name = "ip2nets",    .cb = handle_yaml_config_ip2nets },
4749         { .name = "peer",       .cb = handle_yaml_config_peer },
4750         { .name = "routing",    .cb = handle_yaml_config_routing },
4751         { .name = "buffers",    .cb = handle_yaml_config_buffers },
4752         { .name = "statistics", .cb = handle_yaml_no_op },
4753         { .name = "global",     .cb = handle_yaml_config_global_settings},
4754         { .name = "numa",       .cb = handle_yaml_config_numa },
4755         { .name = "ping",       .cb = handle_yaml_no_op },
4756         { .name = "discover",   .cb = handle_yaml_no_op },
4757         { .name = NULL } };
4758
4759 static struct lookup_cmd_hdlr_tbl lookup_del_tbl[] = {
4760         { .name = "route",      .cb = handle_yaml_del_route },
4761         { .name = "net",        .cb = handle_yaml_del_ni },
4762         { .name = "ip2nets",    .cb = handle_yaml_no_op },
4763         { .name = "peer",       .cb = handle_yaml_del_peer },
4764         { .name = "routing",    .cb = handle_yaml_del_routing },
4765         { .name = "buffers",    .cb = handle_yaml_no_op },
4766         { .name = "statistics", .cb = handle_yaml_no_op },
4767         { .name = "global",     .cb = handle_yaml_del_global_settings},
4768         { .name = "numa",       .cb = handle_yaml_del_numa },
4769         { .name = "ping",       .cb = handle_yaml_no_op },
4770         { .name = "discover",   .cb = handle_yaml_no_op },
4771         { .name = NULL } };
4772
4773 static struct lookup_cmd_hdlr_tbl lookup_show_tbl[] = {
4774         { .name = "route",      .cb = handle_yaml_show_route },
4775         { .name = "net",        .cb = handle_yaml_show_net },
4776         { .name = "peer",       .cb = handle_yaml_show_peers },
4777         { .name = "ip2nets",    .cb = handle_yaml_no_op },
4778         { .name = "routing",    .cb = handle_yaml_show_routing },
4779         { .name = "buffers",    .cb = handle_yaml_show_routing },
4780         { .name = "statistics", .cb = handle_yaml_show_stats },
4781         { .name = "global",     .cb = handle_yaml_show_global_settings},
4782         { .name = "numa",       .cb = handle_yaml_show_numa },
4783         { .name = "ping",       .cb = handle_yaml_no_op },
4784         { .name = "discover",   .cb = handle_yaml_no_op },
4785         { .name = NULL } };
4786
4787 static struct lookup_cmd_hdlr_tbl lookup_exec_tbl[] = {
4788         { .name = "route",      .cb = handle_yaml_no_op },
4789         { .name = "net",        .cb = handle_yaml_no_op },
4790         { .name = "peer",       .cb = handle_yaml_no_op },
4791         { .name = "ip2nets",    .cb = handle_yaml_no_op },
4792         { .name = "routing",    .cb = handle_yaml_no_op },
4793         { .name = "buffers",    .cb = handle_yaml_no_op },
4794         { .name = "statistics", .cb = handle_yaml_no_op },
4795         { .name = "global",     .cb = handle_yaml_no_op },
4796         { .name = "numa",       .cb = handle_yaml_no_op },
4797         { .name = "ping",       .cb = handle_yaml_ping },
4798         { .name = "discover",   .cb = handle_yaml_discover },
4799         { .name = NULL } };
4800
4801 static cmd_handler_t lookup_fn(char *key,
4802                                struct lookup_cmd_hdlr_tbl *tbl)
4803 {
4804         int i;
4805         if (key == NULL)
4806                 return NULL;
4807
4808         for (i = 0; tbl[i].name != NULL; i++) {
4809                 if (strncmp(key, tbl[i].name, strlen(tbl[i].name)) == 0)
4810                         return tbl[i].cb;
4811         }
4812
4813         return NULL;
4814 }
4815
4816 static int lustre_yaml_cb_helper(char *f, struct lookup_cmd_hdlr_tbl *table,
4817                                  struct cYAML **show_rc, struct cYAML **err_rc)
4818 {
4819         struct cYAML *tree, *item = NULL, *head, *child;
4820         cmd_handler_t cb;
4821         char err_str[LNET_MAX_STR_LEN];
4822         int rc = LUSTRE_CFG_RC_NO_ERR, return_rc = LUSTRE_CFG_RC_NO_ERR;
4823
4824         tree = cYAML_build_tree(f, NULL, 0, err_rc, false);
4825         if (tree == NULL)
4826                 return LUSTRE_CFG_RC_BAD_PARAM;
4827
4828         child = tree->cy_child;
4829         while (child != NULL) {
4830                 cb = lookup_fn(child->cy_string, table);
4831                 if (cb == NULL) {
4832                         snprintf(err_str, sizeof(err_str),
4833                                 "\"call back for '%s' not found\"",
4834                                 child->cy_string);
4835                         cYAML_build_error(LUSTRE_CFG_RC_BAD_PARAM, -1,
4836                                         "yaml", "helper", err_str, err_rc);
4837                         goto out;
4838                 }
4839
4840                 if (cYAML_is_sequence(child)) {
4841                         while ((head = cYAML_get_next_seq_item(child, &item))
4842                                != NULL) {
4843                                 rc = cb(head, show_rc, err_rc);
4844                                 if (rc != LUSTRE_CFG_RC_NO_ERR)
4845                                         return_rc = rc;
4846                         }
4847                 } else {
4848                         rc = cb(child, show_rc, err_rc);
4849                         if (rc != LUSTRE_CFG_RC_NO_ERR)
4850                                 return_rc = rc;
4851                 }
4852                 item = NULL;
4853                 child = child->cy_next;
4854         }
4855
4856 out:
4857         cYAML_free_tree(tree);
4858
4859         return return_rc;
4860 }
4861
4862 int lustre_yaml_config(char *f, struct cYAML **err_rc)
4863 {
4864         return lustre_yaml_cb_helper(f, lookup_config_tbl,
4865                                      NULL, err_rc);
4866 }
4867
4868 int lustre_yaml_del(char *f, struct cYAML **err_rc)
4869 {
4870         return lustre_yaml_cb_helper(f, lookup_del_tbl,
4871                                      NULL, err_rc);
4872 }
4873
4874 int lustre_yaml_show(char *f, struct cYAML **show_rc, struct cYAML **err_rc)
4875 {
4876         return lustre_yaml_cb_helper(f, lookup_show_tbl,
4877                                      show_rc, err_rc);
4878 }
4879
4880 int lustre_yaml_exec(char *f, struct cYAML **show_rc, struct cYAML **err_rc)
4881 {
4882         return lustre_yaml_cb_helper(f, lookup_exec_tbl,
4883                                      show_rc, err_rc);
4884 }