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");
2053         }
2054
2055         cYAML_build_error(rc, seq_no, ADD_CMD, name, err_str, err_rc);
2056
2057         return rc;
2058 }
2059
2060 int lustre_lnet_config_ni_healthv(int value, bool all, char *ni_nid, int seq_no,
2061                                   struct cYAML **err_rc)
2062 {
2063         lnet_nid_t nid;
2064         if (ni_nid)
2065                 nid = libcfs_str2nid(ni_nid);
2066         else
2067                 nid = LNET_NID_ANY;
2068         return lustre_lnet_config_healthv(value, all, nid,
2069                                           LNET_HEALTH_TYPE_LOCAL_NI,
2070                                           "ni healthv", seq_no, err_rc);
2071 }
2072
2073 int lustre_lnet_config_peer_ni_healthv(int value, bool all, char *lpni_nid,
2074                                        int seq_no, struct cYAML **err_rc)
2075 {
2076         lnet_nid_t nid;
2077         if (lpni_nid)
2078                 nid = libcfs_str2nid(lpni_nid);
2079         else
2080                 nid = LNET_NID_ANY;
2081         return lustre_lnet_config_healthv(value, all, nid,
2082                                           LNET_HEALTH_TYPE_PEER_NI,
2083                                           "peer_ni healthv", seq_no, err_rc);
2084 }
2085
2086 static bool
2087 add_msg_stats_to_yaml_blk(struct cYAML *yaml,
2088                           struct lnet_ioctl_comm_count *counts)
2089 {
2090         if (cYAML_create_number(yaml, "put",
2091                                 counts->ico_put_count)
2092                                         == NULL)
2093                 return false;
2094         if (cYAML_create_number(yaml, "get",
2095                                 counts->ico_get_count)
2096                                         == NULL)
2097                 return false;
2098         if (cYAML_create_number(yaml, "reply",
2099                                 counts->ico_reply_count)
2100                                         == NULL)
2101                 return false;
2102         if (cYAML_create_number(yaml, "ack",
2103                                 counts->ico_ack_count)
2104                                         == NULL)
2105                 return false;
2106         if (cYAML_create_number(yaml, "hello",
2107                                 counts->ico_hello_count)
2108                                         == NULL)
2109                 return false;
2110
2111         return true;
2112 }
2113
2114 static struct lnet_ioctl_comm_count *
2115 get_counts(struct lnet_ioctl_element_msg_stats *msg_stats, int idx)
2116 {
2117         if (idx == 0)
2118                 return &msg_stats->im_send_stats;
2119         if (idx == 1)
2120                 return &msg_stats->im_recv_stats;
2121         if (idx == 2)
2122                 return &msg_stats->im_drop_stats;
2123
2124         return NULL;
2125 }
2126
2127 int lustre_lnet_show_net(char *nw, int detail, int seq_no,
2128                          struct cYAML **show_rc, struct cYAML **err_rc,
2129                          bool backup)
2130 {
2131         char *buf;
2132         struct lnet_ioctl_config_ni *ni_data;
2133         struct lnet_ioctl_config_lnd_tunables *lnd;
2134         struct lnet_ioctl_element_stats *stats;
2135         struct lnet_ioctl_element_msg_stats msg_stats;
2136         struct lnet_ioctl_local_ni_hstats hstats;
2137         __u32 net = LNET_NIDNET(LNET_NID_ANY);
2138         __u32 prev_net = LNET_NIDNET(LNET_NID_ANY);
2139         int rc = LUSTRE_CFG_RC_OUT_OF_MEM, i, j;
2140         int l_errno = 0;
2141         struct cYAML *root = NULL, *tunables = NULL,
2142                 *net_node = NULL, *interfaces = NULL,
2143                 *item = NULL, *first_seq = NULL,
2144                 *tmp = NULL, *statistics = NULL,
2145                 *yhstats = NULL;
2146         int str_buf_len = LNET_MAX_SHOW_NUM_CPT * 2;
2147         char str_buf[str_buf_len];
2148         char *pos;
2149         char err_str[LNET_MAX_STR_LEN];
2150         bool exist = false, new_net = true;
2151         int net_num = 0;
2152         size_t buf_size = sizeof(*ni_data) + sizeof(*lnd) + sizeof(*stats);
2153
2154         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
2155
2156         buf = calloc(1, buf_size);
2157         if (buf == NULL)
2158                 goto out;
2159
2160         ni_data = (struct lnet_ioctl_config_ni *)buf;
2161
2162         if (nw != NULL) {
2163                 net = libcfs_str2net(nw);
2164                 if (net == LNET_NIDNET(LNET_NID_ANY)) {
2165                         snprintf(err_str,
2166                                  sizeof(err_str),
2167                                  "\"cannot parse net '%s'\"", nw);
2168                         rc = LUSTRE_CFG_RC_BAD_PARAM;
2169                         goto out;
2170                 }
2171         }
2172
2173         root = cYAML_create_object(NULL, NULL);
2174         if (root == NULL)
2175                 goto out;
2176
2177         net_node = cYAML_create_seq(root, "net");
2178         if (net_node == NULL)
2179                 goto out;
2180
2181         for (i = 0;; i++) {
2182                 pos = str_buf;
2183                 __u32 rc_net;
2184
2185                 memset(buf, 0, buf_size);
2186
2187                 LIBCFS_IOC_INIT_V2(*ni_data, lic_cfg_hdr);
2188                 /*
2189                  * set the ioc_len to the proper value since INIT assumes
2190                  * size of data
2191                  */
2192                 ni_data->lic_cfg_hdr.ioc_len = buf_size;
2193                 ni_data->lic_idx = i;
2194
2195                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_LOCAL_NI, ni_data);
2196                 if (rc != 0) {
2197                         l_errno = errno;
2198                         break;
2199                 }
2200
2201                 rc_net = LNET_NIDNET(ni_data->lic_nid);
2202
2203                 /* filter on provided data */
2204                 if (net != LNET_NIDNET(LNET_NID_ANY) &&
2205                     net != rc_net)
2206                         continue;
2207
2208                 /* if we're backing up don't store lo */
2209                 if (backup && LNET_NETTYP(rc_net) == LOLND)
2210                         continue;
2211
2212                 /* default rc to -1 in case we hit the goto */
2213                 rc = -1;
2214                 exist = true;
2215
2216                 stats = (struct lnet_ioctl_element_stats *)ni_data->lic_bulk;
2217                 lnd = (struct lnet_ioctl_config_lnd_tunables *)
2218                         (ni_data->lic_bulk + sizeof(*stats));
2219
2220                 if (rc_net != prev_net) {
2221                         prev_net = rc_net;
2222                         new_net = true;
2223                         net_num++;
2224                 }
2225
2226                 if (new_net) {
2227                         if (!cYAML_create_string(net_node, "net type",
2228                                                  libcfs_net2str(rc_net)))
2229                                 goto out;
2230
2231                         tmp = cYAML_create_seq(net_node, "local NI(s)");
2232                         if (tmp == NULL)
2233                                 goto out;
2234                         new_net = false;
2235                 }
2236
2237                 /* create the tree to be printed. */
2238                 item = cYAML_create_seq_item(tmp);
2239                 if (item == NULL)
2240                         goto out;
2241
2242                 if (first_seq == NULL)
2243                         first_seq = item;
2244
2245                 if (!backup &&
2246                     cYAML_create_string(item, "nid",
2247                                         libcfs_nid2str(ni_data->lic_nid)) == NULL)
2248                         goto out;
2249
2250                 if (!backup &&
2251                     cYAML_create_string(item,
2252                                         "status",
2253                                         (ni_data->lic_status ==
2254                                           LNET_NI_STATUS_UP) ?
2255                                             "up" : "down") == NULL)
2256                         goto out;
2257
2258                 /* don't add interfaces unless there is at least one
2259                  * interface */
2260                 if (strlen(ni_data->lic_ni_intf[0]) > 0) {
2261                         interfaces = cYAML_create_object(item, "interfaces");
2262                         if (interfaces == NULL)
2263                                 goto out;
2264
2265                         for (j = 0; j < LNET_INTERFACES_NUM; j++) {
2266                                 if (strlen(ni_data->lic_ni_intf[j]) > 0) {
2267                                         snprintf(str_buf,
2268                                                  sizeof(str_buf), "%d", j);
2269                                         if (cYAML_create_string(interfaces,
2270                                                 str_buf,
2271                                                 ni_data->lic_ni_intf[j]) ==
2272                                                         NULL)
2273                                                 goto out;
2274                                 }
2275                         }
2276                 }
2277
2278                 if (detail) {
2279                         char *limit;
2280                         int k;
2281
2282                         if (backup)
2283                                 goto continue_without_msg_stats;
2284
2285                         statistics = cYAML_create_object(item, "statistics");
2286                         if (statistics == NULL)
2287                                 goto out;
2288
2289                         if (cYAML_create_number(statistics, "send_count",
2290                                                 stats->iel_send_count)
2291                                                         == NULL)
2292                                 goto out;
2293
2294                         if (cYAML_create_number(statistics, "recv_count",
2295                                                 stats->iel_recv_count)
2296                                                         == NULL)
2297                                 goto out;
2298
2299                         if (cYAML_create_number(statistics, "drop_count",
2300                                                 stats->iel_drop_count)
2301                                                         == NULL)
2302                                 goto out;
2303
2304                         if (detail < 2)
2305                                 goto continue_without_msg_stats;
2306
2307                         LIBCFS_IOC_INIT_V2(msg_stats, im_hdr);
2308                         msg_stats.im_hdr.ioc_len = sizeof(msg_stats);
2309                         msg_stats.im_idx = i;
2310
2311                         rc = l_ioctl(LNET_DEV_ID,
2312                                      IOC_LIBCFS_GET_LOCAL_NI_MSG_STATS,
2313                                      &msg_stats);
2314                         if (rc != 0) {
2315                                 l_errno = errno;
2316                                 goto continue_without_msg_stats;
2317                         }
2318
2319                         for (k = 0; k < 3; k++) {
2320                                 struct lnet_ioctl_comm_count *counts;
2321                                 struct cYAML *msg_statistics = NULL;
2322
2323                                 msg_statistics = cYAML_create_object(item,
2324                                                  (char *)gmsg_stat_names[k]);
2325                                 if (msg_statistics == NULL)
2326                                         goto out;
2327
2328                                 counts = get_counts(&msg_stats, k);
2329                                 if (counts == NULL)
2330                                         goto out;
2331
2332                                 if (!add_msg_stats_to_yaml_blk(msg_statistics,
2333                                                                counts))
2334                                         goto out;
2335                         }
2336
2337                         LIBCFS_IOC_INIT_V2(hstats, hlni_hdr);
2338                         hstats.hlni_nid = ni_data->lic_nid;
2339                         /* grab health stats */
2340                         rc = l_ioctl(LNET_DEV_ID,
2341                                      IOC_LIBCFS_GET_LOCAL_HSTATS,
2342                                      &hstats);
2343                         if (rc != 0) {
2344                                 l_errno = errno;
2345                                 goto continue_without_msg_stats;
2346                         }
2347                         yhstats = cYAML_create_object(item, "health stats");
2348                         if (!yhstats)
2349                                 goto out;
2350                         if (cYAML_create_number(yhstats, "health value",
2351                                                 hstats.hlni_health_value)
2352                                                         == NULL)
2353                                 goto out;
2354                         if (cYAML_create_number(yhstats, "interrupts",
2355                                                 hstats.hlni_local_interrupt)
2356                                                         == NULL)
2357                                 goto out;
2358                         if (cYAML_create_number(yhstats, "dropped",
2359                                                 hstats.hlni_local_dropped)
2360                                                         == NULL)
2361                                 goto out;
2362                         if (cYAML_create_number(yhstats, "aborted",
2363                                                 hstats.hlni_local_aborted)
2364                                                         == NULL)
2365                                 goto out;
2366                         if (cYAML_create_number(yhstats, "no route",
2367                                                 hstats.hlni_local_no_route)
2368                                                         == NULL)
2369                                 goto out;
2370                         if (cYAML_create_number(yhstats, "timeouts",
2371                                                 hstats.hlni_local_timeout)
2372                                                         == NULL)
2373                                 goto out;
2374                         if (cYAML_create_number(yhstats, "error",
2375                                                 hstats.hlni_local_error)
2376                                                         == NULL)
2377                                 goto out;
2378
2379 continue_without_msg_stats:
2380                         tunables = cYAML_create_object(item, "tunables");
2381                         if (!tunables)
2382                                 goto out;
2383
2384                         rc = lustre_net_show_tunables(tunables, &lnd->lt_cmn);
2385                         if (rc != LUSTRE_CFG_RC_NO_ERR)
2386                                 goto out;
2387
2388                         rc = lustre_ni_show_tunables(tunables, LNET_NETTYP(rc_net),
2389                                                      &lnd->lt_tun);
2390                         if (rc != LUSTRE_CFG_RC_NO_ERR &&
2391                             rc != LUSTRE_CFG_RC_NO_MATCH)
2392                                 goto out;
2393
2394                         if (rc != LUSTRE_CFG_RC_NO_MATCH) {
2395                                 tunables = cYAML_create_object(item,
2396                                                                "lnd tunables");
2397                                 if (tunables == NULL)
2398                                         goto out;
2399                         }
2400
2401                         if (!backup &&
2402                             cYAML_create_number(item, "dev cpt",
2403                                                 ni_data->lic_dev_cpt) == NULL)
2404                                 goto out;
2405
2406                         if (!backup &&
2407                             cYAML_create_number(item, "tcp bonding",
2408                                                 ni_data->lic_tcp_bonding)
2409                                                         == NULL)
2410                                 goto out;
2411
2412                         /* out put the CPTs in the format: "[x,x,x,...]" */
2413                         limit = str_buf + str_buf_len - 3;
2414                         pos += snprintf(pos, limit - pos, "\"[");
2415                         for (j = 0 ; ni_data->lic_ncpts >= 1 &&
2416                                 j < ni_data->lic_ncpts &&
2417                                 pos < limit; j++) {
2418                                 pos += snprintf(pos, limit - pos,
2419                                                 "%d", ni_data->lic_cpts[j]);
2420                                 if ((j + 1) < ni_data->lic_ncpts)
2421                                         pos += snprintf(pos, limit - pos, ",");
2422                         }
2423                         pos += snprintf(pos, 3, "]\"");
2424
2425                         if (ni_data->lic_ncpts >= 1 &&
2426                             cYAML_create_string(item, "CPT",
2427                                                 str_buf) == NULL)
2428                                 goto out;
2429                 }
2430         }
2431
2432         /* Print out the net information only if show_rc is not provided */
2433         if (show_rc == NULL)
2434                 cYAML_print_tree(root);
2435
2436         if (l_errno != ENOENT) {
2437                 snprintf(err_str,
2438                          sizeof(err_str),
2439                          "\"cannot get networks: %s\"",
2440                          strerror(l_errno));
2441                 rc = -l_errno;
2442                 goto out;
2443         } else
2444                 rc = LUSTRE_CFG_RC_NO_ERR;
2445
2446         snprintf(err_str, sizeof(err_str), "\"success\"");
2447 out:
2448         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR || !exist) {
2449                 cYAML_free_tree(root);
2450         } else if (show_rc != NULL && *show_rc != NULL) {
2451                 struct cYAML *show_node;
2452                 /* find the net node, if one doesn't exist
2453                  * then insert one.  Otherwise add to the one there
2454                  */
2455                 show_node = cYAML_get_object_item(*show_rc, "net");
2456                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
2457                         cYAML_insert_child(show_node, first_seq);
2458                         free(net_node);
2459                         free(root);
2460                 } else if (show_node == NULL) {
2461                         cYAML_insert_sibling((*show_rc)->cy_child,
2462                                                 net_node);
2463                         free(root);
2464                 } else {
2465                         cYAML_free_tree(root);
2466                 }
2467         } else {
2468                 *show_rc = root;
2469         }
2470
2471         cYAML_build_error(rc, seq_no, SHOW_CMD, "net", err_str, err_rc);
2472
2473         return rc;
2474 }
2475
2476 int lustre_lnet_enable_routing(int enable, int seq_no, struct cYAML **err_rc)
2477 {
2478         struct lnet_ioctl_config_data data;
2479         int rc = LUSTRE_CFG_RC_NO_ERR;
2480         char err_str[LNET_MAX_STR_LEN];
2481
2482         snprintf(err_str, sizeof(err_str), "\"success\"");
2483
2484         LIBCFS_IOC_INIT_V2(data, cfg_hdr);
2485         data.cfg_config_u.cfg_buffers.buf_enable = (enable) ? 1 : 0;
2486
2487         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_CONFIG_RTR, &data);
2488         if (rc != 0) {
2489                 rc = -errno;
2490                 snprintf(err_str,
2491                          sizeof(err_str),
2492                          "\"cannot %s routing %s\"",
2493                          (enable) ? "enable" : "disable", strerror(errno));
2494                 goto out;
2495         }
2496
2497 out:
2498         cYAML_build_error(rc, seq_no,
2499                          (enable) ? ADD_CMD : DEL_CMD,
2500                          "routing", err_str, err_rc);
2501
2502         return rc;
2503 }
2504
2505 int ioctl_set_value(__u32 val, int ioc, char *name,
2506                     int seq_no, struct cYAML **err_rc)
2507 {
2508         struct lnet_ioctl_set_value data;
2509         int rc = LUSTRE_CFG_RC_NO_ERR;
2510         char err_str[LNET_MAX_STR_LEN];
2511
2512         snprintf(err_str, sizeof(err_str), "\"success\"");
2513
2514         LIBCFS_IOC_INIT_V2(data, sv_hdr);
2515         data.sv_value = val;
2516
2517         rc = l_ioctl(LNET_DEV_ID, ioc , &data);
2518         if (rc != 0) {
2519                 rc = -errno;
2520                 snprintf(err_str,
2521                          sizeof(err_str),
2522                          "\"cannot configure %s to %d: %s\"", name,
2523                          val, strerror(errno));
2524         }
2525
2526         cYAML_build_error(rc, seq_no, ADD_CMD, name, err_str, err_rc);
2527
2528         return rc;
2529 }
2530
2531 int lustre_lnet_config_hsensitivity(int sen, int seq_no, struct cYAML **err_rc)
2532 {
2533         int rc = LUSTRE_CFG_RC_NO_ERR;
2534         char err_str[LNET_MAX_STR_LEN];
2535         char val[LNET_MAX_STR_LEN];
2536
2537         snprintf(err_str, sizeof(err_str), "\"success\"");
2538
2539         snprintf(val, sizeof(val), "%d", sen);
2540
2541         rc = write_sysfs_file(modparam_path, "lnet_health_sensitivity", val,
2542                               1, strlen(val) + 1);
2543         if (rc)
2544                 snprintf(err_str, sizeof(err_str),
2545                          "\"cannot configure health sensitivity: %s\"",
2546                          strerror(errno));
2547
2548         cYAML_build_error(rc, seq_no, ADD_CMD, "health_sensitivity", err_str, err_rc);
2549
2550         return rc;
2551 }
2552
2553 int lustre_lnet_config_transaction_to(int timeout, int seq_no, struct cYAML **err_rc)
2554 {
2555         int rc = LUSTRE_CFG_RC_NO_ERR;
2556         char err_str[LNET_MAX_STR_LEN];
2557         char val[LNET_MAX_STR_LEN];
2558
2559         snprintf(err_str, sizeof(err_str), "\"success\"");
2560
2561         snprintf(val, sizeof(val), "%d", timeout);
2562
2563         rc = write_sysfs_file(modparam_path, "lnet_transaction_timeout", val,
2564                               1, strlen(val) + 1);
2565         if (rc)
2566                 snprintf(err_str, sizeof(err_str),
2567                          "\"cannot configure transaction timeout: %s\"",
2568                          strerror(errno));
2569
2570         cYAML_build_error(rc, seq_no, ADD_CMD, "transaction_timeout", err_str, err_rc);
2571
2572         return rc;
2573 }
2574
2575 int lustre_lnet_config_retry_count(int count, int seq_no, struct cYAML **err_rc)
2576 {
2577         int rc = LUSTRE_CFG_RC_NO_ERR;
2578         char err_str[LNET_MAX_STR_LEN];
2579         char val[LNET_MAX_STR_LEN];
2580
2581         snprintf(err_str, sizeof(err_str), "\"success\"");
2582
2583         snprintf(val, sizeof(val), "%d", count);
2584
2585         rc = write_sysfs_file(modparam_path, "lnet_retry_count", val,
2586                               1, strlen(val) + 1);
2587         if (rc)
2588                 snprintf(err_str, sizeof(err_str),
2589                          "\"cannot configure retry count: %s\"",
2590                          strerror(errno));
2591
2592         cYAML_build_error(rc, seq_no, ADD_CMD, "retry_count", err_str, err_rc);
2593
2594         return rc;
2595 }
2596
2597 int lustre_lnet_config_max_intf(int max, int seq_no, struct cYAML **err_rc)
2598 {
2599         int rc = LUSTRE_CFG_RC_NO_ERR;
2600         char err_str[LNET_MAX_STR_LEN];
2601         char val[LNET_MAX_STR_LEN];
2602
2603         snprintf(err_str, sizeof(err_str), "\"success\"");
2604
2605         snprintf(val, sizeof(val), "%d", max);
2606
2607         rc = write_sysfs_file(modparam_path, "lnet_interfaces_max", val,
2608                               1, strlen(val) + 1);
2609         if (rc)
2610                 snprintf(err_str, sizeof(err_str),
2611                          "\"cannot configure max interfaces: %s\"",
2612                          strerror(errno));
2613
2614         cYAML_build_error(rc, seq_no, ADD_CMD, "max_interfaces", err_str, err_rc);
2615
2616         return rc;
2617 }
2618
2619 int lustre_lnet_config_discovery(int enable, int seq_no, struct cYAML **err_rc)
2620 {
2621         int rc = LUSTRE_CFG_RC_NO_ERR;
2622         char err_str[LNET_MAX_STR_LEN];
2623         char val[LNET_MAX_STR_LEN];
2624
2625         snprintf(err_str, sizeof(err_str), "\"success\"");
2626
2627         snprintf(val, sizeof(val), "%u", (enable) ? 0 : 1);
2628
2629         rc = write_sysfs_file(modparam_path, "lnet_peer_discovery_disabled", val,
2630                               1, strlen(val) + 1);
2631         if (rc)
2632                 snprintf(err_str, sizeof(err_str),
2633                          "\"cannot configure discovery: %s\"",
2634                          strerror(errno));
2635
2636         cYAML_build_error(rc, seq_no, ADD_CMD, "discovery", err_str, err_rc);
2637
2638         return rc;
2639
2640 }
2641
2642 int lustre_lnet_config_numa_range(int range, int seq_no, struct cYAML **err_rc)
2643 {
2644         return ioctl_set_value(range, IOC_LIBCFS_SET_NUMA_RANGE,
2645                                "numa_range", seq_no, err_rc);
2646 }
2647
2648 int lustre_lnet_config_buffers(int tiny, int small, int large, int seq_no,
2649                                struct cYAML **err_rc)
2650 {
2651         struct lnet_ioctl_config_data data;
2652         int rc = LUSTRE_CFG_RC_NO_ERR;
2653         char err_str[LNET_MAX_STR_LEN];
2654
2655         snprintf(err_str, sizeof(err_str), "\"success\"");
2656
2657         /* -1 indicates to ignore changes to this field */
2658         if (tiny < -1 || small < -1 || large < -1) {
2659                 snprintf(err_str,
2660                          sizeof(err_str),
2661                          "\"tiny, small and large must be >= 0\"");
2662                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
2663                 goto out;
2664         }
2665
2666         LIBCFS_IOC_INIT_V2(data, cfg_hdr);
2667         data.cfg_config_u.cfg_buffers.buf_tiny = tiny;
2668         data.cfg_config_u.cfg_buffers.buf_small = small;
2669         data.cfg_config_u.cfg_buffers.buf_large = large;
2670
2671         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_ADD_BUF, &data);
2672         if (rc != 0) {
2673                 rc = -errno;
2674                 snprintf(err_str,
2675                          sizeof(err_str),
2676                          "\"cannot configure buffers: %s\"", strerror(errno));
2677                 goto out;
2678         }
2679
2680 out:
2681         cYAML_build_error(rc, seq_no, ADD_CMD, "buf", err_str, err_rc);
2682
2683         return rc;
2684 }
2685
2686 int lustre_lnet_show_routing(int seq_no, struct cYAML **show_rc,
2687                              struct cYAML **err_rc, bool backup)
2688 {
2689         struct lnet_ioctl_config_data *data;
2690         struct lnet_ioctl_pool_cfg *pool_cfg = NULL;
2691         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
2692         int l_errno = 0;
2693         char *buf;
2694         char *pools[LNET_NRBPOOLS] = {"tiny", "small", "large"};
2695         int buf_count[LNET_NRBPOOLS] = {0};
2696         struct cYAML *root = NULL, *pools_node = NULL,
2697                      *type_node = NULL, *item = NULL, *cpt = NULL,
2698                      *first_seq = NULL, *buffers = NULL;
2699         int i, j;
2700         char err_str[LNET_MAX_STR_LEN];
2701         char node_name[LNET_MAX_STR_LEN];
2702         bool exist = false;
2703
2704         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
2705
2706         buf = calloc(1, sizeof(*data) + sizeof(*pool_cfg));
2707         if (buf == NULL)
2708                 goto out;
2709
2710         data = (struct lnet_ioctl_config_data *)buf;
2711
2712         root = cYAML_create_object(NULL, NULL);
2713         if (root == NULL)
2714                 goto out;
2715
2716         if (backup)
2717                 pools_node = cYAML_create_object(root, "routing");
2718         else
2719                 pools_node = cYAML_create_seq(root, "routing");
2720         if (pools_node == NULL)
2721                 goto out;
2722
2723         for (i = 0;; i++) {
2724                 LIBCFS_IOC_INIT_V2(*data, cfg_hdr);
2725                 data->cfg_hdr.ioc_len = sizeof(struct lnet_ioctl_config_data) +
2726                                         sizeof(struct lnet_ioctl_pool_cfg);
2727                 data->cfg_count = i;
2728
2729                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_BUF, data);
2730                 if (rc != 0) {
2731                         l_errno = errno;
2732                         break;
2733                 }
2734
2735                 exist = true;
2736
2737                 pool_cfg = (struct lnet_ioctl_pool_cfg *)data->cfg_bulk;
2738
2739                 if (backup)
2740                         goto calculate_buffers;
2741
2742                 snprintf(node_name, sizeof(node_name), "cpt[%d]", i);
2743                 item = cYAML_create_seq_item(pools_node);
2744                 if (item == NULL)
2745                         goto out;
2746
2747                 if (first_seq == NULL)
2748                         first_seq = item;
2749
2750                 cpt = cYAML_create_object(item, node_name);
2751                 if (cpt == NULL)
2752                         goto out;
2753
2754 calculate_buffers:
2755                 /* create the tree  and print */
2756                 for (j = 0; j < LNET_NRBPOOLS; j++) {
2757                         if (!backup) {
2758                                 type_node = cYAML_create_object(cpt, pools[j]);
2759                                 if (type_node == NULL)
2760                                         goto out;
2761                         }
2762                         if (!backup &&
2763                             cYAML_create_number(type_node, "npages",
2764                                                 pool_cfg->pl_pools[j].pl_npages)
2765                             == NULL)
2766                                 goto out;
2767                         if (!backup &&
2768                             cYAML_create_number(type_node, "nbuffers",
2769                                                 pool_cfg->pl_pools[j].
2770                                                   pl_nbuffers) == NULL)
2771                                 goto out;
2772                         if (!backup &&
2773                             cYAML_create_number(type_node, "credits",
2774                                                 pool_cfg->pl_pools[j].
2775                                                    pl_credits) == NULL)
2776                                 goto out;
2777                         if (!backup &&
2778                             cYAML_create_number(type_node, "mincredits",
2779                                                 pool_cfg->pl_pools[j].
2780                                                    pl_mincredits) == NULL)
2781                                 goto out;
2782                         /* keep track of the total count for each of the
2783                          * tiny, small and large buffers */
2784                         buf_count[j] += pool_cfg->pl_pools[j].pl_nbuffers;
2785                 }
2786         }
2787
2788         if (pool_cfg != NULL) {
2789                 if (backup) {
2790                         if (cYAML_create_number(pools_node, "enable",
2791                                                 pool_cfg->pl_routing) ==
2792                         NULL)
2793                                 goto out;
2794
2795                         goto add_buffer_section;
2796                 }
2797
2798                 item = cYAML_create_seq_item(pools_node);
2799                 if (item == NULL)
2800                         goto out;
2801
2802                 if (cYAML_create_number(item, "enable", pool_cfg->pl_routing) ==
2803                     NULL)
2804                         goto out;
2805         }
2806
2807 add_buffer_section:
2808         /* create a buffers entry in the show. This is necessary so that
2809          * if the YAML output is used to configure a node, the buffer
2810          * configuration takes hold */
2811         buffers = cYAML_create_object(root, "buffers");
2812         if (buffers == NULL)
2813                 goto out;
2814
2815         for (i = 0; i < LNET_NRBPOOLS; i++) {
2816                 if (cYAML_create_number(buffers, pools[i], buf_count[i]) == NULL)
2817                         goto out;
2818         }
2819
2820         if (show_rc == NULL)
2821                 cYAML_print_tree(root);
2822
2823         if (l_errno != ENOENT) {
2824                 snprintf(err_str,
2825                          sizeof(err_str),
2826                          "\"cannot get routing information: %s\"",
2827                          strerror(l_errno));
2828                 rc = -l_errno;
2829                 goto out;
2830         } else
2831                 rc = LUSTRE_CFG_RC_NO_ERR;
2832
2833         snprintf(err_str, sizeof(err_str), "\"success\"");
2834         rc = LUSTRE_CFG_RC_NO_ERR;
2835
2836 out:
2837         free(buf);
2838         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR || !exist) {
2839                 cYAML_free_tree(root);
2840         } else if (show_rc != NULL && *show_rc != NULL) {
2841                 struct cYAML *routing_node;
2842                 /* there should exist only one routing block and one
2843                  * buffers block. If there already exists a previous one
2844                  * then don't add another */
2845                 routing_node = cYAML_get_object_item(*show_rc, "routing");
2846                 if (routing_node == NULL) {
2847                         cYAML_insert_sibling((*show_rc)->cy_child,
2848                                                 root->cy_child);
2849                         free(root);
2850                 } else {
2851                         cYAML_free_tree(root);
2852                 }
2853         } else {
2854                 *show_rc = root;
2855         }
2856
2857         cYAML_build_error(rc, seq_no, SHOW_CMD, "routing", err_str, err_rc);
2858
2859         return rc;
2860 }
2861
2862 int lustre_lnet_show_peer(char *knid, int detail, int seq_no,
2863                           struct cYAML **show_rc, struct cYAML **err_rc,
2864                           bool backup)
2865 {
2866         /*
2867          * TODO: This function is changing in a future patch to accommodate
2868          * PEER_LIST and proper filtering on any nid of the peer
2869          */
2870         struct lnet_ioctl_peer_cfg peer_info;
2871         struct lnet_peer_ni_credit_info *lpni_cri;
2872         struct lnet_ioctl_element_stats *lpni_stats;
2873         struct lnet_ioctl_element_msg_stats *msg_stats;
2874         struct lnet_ioctl_peer_ni_hstats *hstats;
2875         lnet_nid_t *nidp;
2876         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
2877         int i, j, k;
2878         int l_errno = 0;
2879         __u32 count;
2880         __u32 size;
2881         struct cYAML *root = NULL, *peer = NULL, *peer_ni = NULL,
2882                      *first_seq = NULL, *peer_root = NULL, *tmp = NULL,
2883                      *msg_statistics = NULL, *statistics = NULL,
2884                      *yhstats;
2885         char err_str[LNET_MAX_STR_LEN];
2886         struct lnet_process_id *list = NULL;
2887         void *data = NULL;
2888         void *lpni_data;
2889
2890         snprintf(err_str, sizeof(err_str),
2891                  "\"out of memory\"");
2892
2893         /* create struct cYAML root object */
2894         root = cYAML_create_object(NULL, NULL);
2895         if (root == NULL)
2896                 goto out;
2897
2898         peer_root = cYAML_create_seq(root, "peer");
2899         if (peer_root == NULL)
2900                 goto out;
2901
2902         count = 1000;
2903         size = count * sizeof(struct lnet_process_id);
2904         list = malloc(size);
2905         if (list == NULL) {
2906                 l_errno = ENOMEM;
2907                 goto out;
2908         }
2909         if (knid != NULL) {
2910                 list[0].nid = libcfs_str2nid(knid);
2911                 count = 1;
2912         } else {
2913                 for (;;) {
2914                         memset(&peer_info, 0, sizeof(peer_info));
2915                         LIBCFS_IOC_INIT_V2(peer_info, prcfg_hdr);
2916                         peer_info.prcfg_hdr.ioc_len = sizeof(peer_info);
2917                         peer_info.prcfg_size = size;
2918                         peer_info.prcfg_bulk = list;
2919
2920                         l_errno = 0;
2921                         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_PEER_LIST,
2922                                      &peer_info);
2923                         count = peer_info.prcfg_count;
2924                         if (rc == 0)
2925                                 break;
2926                         l_errno = errno;
2927                         if (l_errno != E2BIG) {
2928                                 snprintf(err_str,
2929                                         sizeof(err_str),
2930                                         "\"cannot get peer list: %s\"",
2931                                         strerror(l_errno));
2932                                 rc = -l_errno;
2933                                 goto out;
2934                         }
2935                         free(list);
2936                         size = peer_info.prcfg_size;
2937                         list = malloc(size);
2938                         if (list == NULL) {
2939                                 l_errno = ENOMEM;
2940                                 goto out;
2941                         }
2942                 }
2943         }
2944
2945         size = 4096;
2946         data = malloc(size);
2947         if (data == NULL) {
2948                 l_errno = ENOMEM;
2949                 goto out;
2950         }
2951         for (i = 0; i < count; i++) {
2952                 for (;;) {
2953                         memset(&peer_info, 0, sizeof(peer_info));
2954                         LIBCFS_IOC_INIT_V2(peer_info, prcfg_hdr);
2955                         peer_info.prcfg_hdr.ioc_len = sizeof(peer_info);
2956                         peer_info.prcfg_prim_nid = list[i].nid;
2957                         peer_info.prcfg_size = size;
2958                         peer_info.prcfg_bulk = data;
2959
2960                         l_errno = 0;
2961                         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_PEER_NI,
2962                                      &peer_info);
2963                         if (rc == 0)
2964                                 break;
2965                         l_errno = errno;
2966                         if (l_errno != E2BIG) {
2967                                 snprintf(err_str,
2968                                         sizeof(err_str),
2969                                         "\"cannot get peer information: %s\"",
2970                                         strerror(l_errno));
2971                                 rc = -l_errno;
2972                                 goto out;
2973                         }
2974                         free(data);
2975                         size = peer_info.prcfg_size;
2976                         data = malloc(size);
2977                         if (data == NULL) {
2978                                 l_errno = ENOMEM;
2979                                 goto out;
2980                         }
2981                 }
2982
2983                 peer = cYAML_create_seq_item(peer_root);
2984                 if (peer == NULL)
2985                         goto out;
2986
2987                 if (first_seq == NULL)
2988                         first_seq = peer;
2989
2990                 lnet_nid_t pnid = peer_info.prcfg_prim_nid;
2991                 if (cYAML_create_string(peer, "primary nid",
2992                                         libcfs_nid2str(pnid))
2993                     == NULL)
2994                         goto out;
2995                 if (cYAML_create_string(peer, "Multi-Rail",
2996                                         peer_info.prcfg_mr ? "True" : "False")
2997                     == NULL)
2998                         goto out;
2999                 /*
3000                  * print out the state of the peer only if details are
3001                  * requested
3002                  */
3003                 if (detail >= 3) {
3004                         if (!backup &&
3005                             cYAML_create_number(peer, "peer state",
3006                                                 peer_info.prcfg_state)
3007                                 == NULL)
3008                                 goto out;
3009                 }
3010
3011                 tmp = cYAML_create_seq(peer, "peer ni");
3012                 if (tmp == NULL)
3013                         goto out;
3014
3015                 lpni_data = data;
3016                 for (j = 0; j < peer_info.prcfg_count; j++) {
3017                         nidp = lpni_data;
3018                         lpni_cri = (void*)nidp + sizeof(nidp);
3019                         lpni_stats = (void *)lpni_cri + sizeof(*lpni_cri);
3020                         msg_stats = (void *)lpni_stats + sizeof(*lpni_stats);
3021                         hstats = (void *)msg_stats + sizeof(*msg_stats);
3022                         lpni_data = (void *)hstats + sizeof(*hstats);
3023
3024                         peer_ni = cYAML_create_seq_item(tmp);
3025                         if (peer_ni == NULL)
3026                                 goto out;
3027
3028                         if (cYAML_create_string(peer_ni, "nid",
3029                                                 libcfs_nid2str(*nidp))
3030                             == NULL)
3031                                 goto out;
3032
3033                         if (backup)
3034                                 continue;
3035
3036                         if (cYAML_create_string(peer_ni, "state",
3037                                                 lpni_cri->cr_aliveness)
3038                             == NULL)
3039                                 goto out;
3040
3041                         if (!detail)
3042                                 continue;
3043
3044                         if (cYAML_create_number(peer_ni, "max_ni_tx_credits",
3045                                                 lpni_cri->cr_ni_peer_tx_credits)
3046                             == NULL)
3047                                 goto out;
3048
3049                         if (cYAML_create_number(peer_ni, "available_tx_credits",
3050                                                 lpni_cri->cr_peer_tx_credits)
3051                             == NULL)
3052                                 goto out;
3053
3054                         if (cYAML_create_number(peer_ni, "min_tx_credits",
3055                                                 lpni_cri->cr_peer_min_tx_credits)
3056                             == NULL)
3057                                 goto out;
3058
3059                         if (cYAML_create_number(peer_ni, "tx_q_num_of_buf",
3060                                                 lpni_cri->cr_peer_tx_qnob)
3061                             == NULL)
3062                                 goto out;
3063
3064                         if (cYAML_create_number(peer_ni, "available_rtr_credits",
3065                                                 lpni_cri->cr_peer_rtr_credits)
3066                             == NULL)
3067                                 goto out;
3068
3069                         if (cYAML_create_number(peer_ni, "min_rtr_credits",
3070                                                 lpni_cri->cr_peer_min_rtr_credits)
3071                             == NULL)
3072                                 goto out;
3073
3074                         if (cYAML_create_number(peer_ni, "refcount",
3075                                                 lpni_cri->cr_refcount) == NULL)
3076                                 goto out;
3077
3078                         statistics = cYAML_create_object(peer_ni, "statistics");
3079                         if (statistics == NULL)
3080                                 goto out;
3081
3082                         if (cYAML_create_number(statistics, "send_count",
3083                                                 lpni_stats->iel_send_count)
3084                             == NULL)
3085                                 goto out;
3086
3087                         if (cYAML_create_number(statistics, "recv_count",
3088                                                 lpni_stats->iel_recv_count)
3089                             == NULL)
3090                                 goto out;
3091
3092                         if (cYAML_create_number(statistics, "drop_count",
3093                                                 lpni_stats->iel_drop_count)
3094                             == NULL)
3095                                 goto out;
3096
3097                         if (detail < 2)
3098                                 continue;
3099
3100                         for (k = 0; k < 3; k++) {
3101                                 struct lnet_ioctl_comm_count *counts;
3102
3103                                 msg_statistics = cYAML_create_object(peer_ni,
3104                                                  (char *) gmsg_stat_names[k]);
3105                                 if (msg_statistics == NULL)
3106                                         goto out;
3107
3108                                 counts = get_counts(msg_stats, k);
3109                                 if (counts == NULL)
3110                                         goto out;
3111
3112                                 if (!add_msg_stats_to_yaml_blk(msg_statistics,
3113                                                                counts))
3114                                         goto out;
3115                         }
3116
3117                         yhstats = cYAML_create_object(peer_ni, "health stats");
3118                         if (!yhstats)
3119                                 goto out;
3120                         if (cYAML_create_number(yhstats, "health value",
3121                                                 hstats->hlpni_health_value)
3122                                                         == NULL)
3123                                 goto out;
3124                         if (cYAML_create_number(yhstats, "dropped",
3125                                                 hstats->hlpni_remote_dropped)
3126                                                         == NULL)
3127                                 goto out;
3128                         if (cYAML_create_number(yhstats, "timeout",
3129                                                 hstats->hlpni_remote_timeout)
3130                                                         == NULL)
3131                                 goto out;
3132                         if (cYAML_create_number(yhstats, "error",
3133                                                 hstats->hlpni_remote_error)
3134                                                         == NULL)
3135                                 goto out;
3136                         if (cYAML_create_number(yhstats, "network timeout",
3137                                                 hstats->hlpni_network_timeout)
3138                                                         == NULL)
3139                                 goto out;
3140                 }
3141         }
3142
3143         /* print output iff show_rc is not provided */
3144         if (show_rc == NULL)
3145                 cYAML_print_tree(root);
3146
3147         snprintf(err_str, sizeof(err_str), "\"success\"");
3148         rc = LUSTRE_CFG_RC_NO_ERR;
3149
3150 out:
3151         free(list);
3152         free(data);
3153         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR) {
3154                 cYAML_free_tree(root);
3155         } else if (show_rc != NULL && *show_rc != NULL) {
3156                 struct cYAML *show_node;
3157                 /* find the peer node, if one doesn't exist then
3158                  * insert one.  Otherwise add to the one there
3159                  */
3160                 show_node = cYAML_get_object_item(*show_rc,
3161                                                   "peer");
3162                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
3163                         cYAML_insert_child(show_node, first_seq);
3164                         free(peer_root);
3165                         free(root);
3166                 } else if (show_node == NULL) {
3167                         cYAML_insert_sibling((*show_rc)->cy_child,
3168                                              peer_root);
3169                         free(root);
3170                 } else {
3171                         cYAML_free_tree(root);
3172                 }
3173         } else {
3174                 *show_rc = root;
3175         }
3176
3177         cYAML_build_error(rc, seq_no, SHOW_CMD, "peer", err_str,
3178                           err_rc);
3179
3180         return rc;
3181 }
3182
3183 int lustre_lnet_list_peer(int seq_no,
3184                           struct cYAML **show_rc, struct cYAML **err_rc)
3185 {
3186         struct lnet_ioctl_peer_cfg peer_info;
3187         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3188         __u32 count;
3189         __u32 size;
3190         int i = 0;
3191         int l_errno = 0;
3192         struct cYAML *root = NULL, *list_root = NULL, *first_seq = NULL;
3193         char err_str[LNET_MAX_STR_LEN];
3194         struct lnet_process_id *list = NULL;
3195
3196         snprintf(err_str, sizeof(err_str),
3197                  "\"out of memory\"");
3198
3199         memset(&peer_info, 0, sizeof(peer_info));
3200
3201         /* create struct cYAML root object */
3202         root = cYAML_create_object(NULL, NULL);
3203         if (root == NULL)
3204                 goto out;
3205
3206         list_root = cYAML_create_seq(root, "peer list");
3207         if (list_root == NULL)
3208                 goto out;
3209
3210         count = 1000;
3211         size = count * sizeof(struct lnet_process_id);
3212         list = malloc(size);
3213         if (list == NULL) {
3214                 l_errno = ENOMEM;
3215                 goto out;
3216         }
3217         for (;;) {
3218                 LIBCFS_IOC_INIT_V2(peer_info, prcfg_hdr);
3219                 peer_info.prcfg_hdr.ioc_len = sizeof(peer_info);
3220                 peer_info.prcfg_size = size;
3221                 peer_info.prcfg_bulk = list;
3222
3223                 l_errno = 0;
3224                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_PEER_LIST, &peer_info);
3225                 count = peer_info.prcfg_count;
3226                 if (rc == 0)
3227                         break;
3228                 l_errno = errno;
3229                 if (l_errno != E2BIG) {
3230                         snprintf(err_str,
3231                                 sizeof(err_str),
3232                                 "\"cannot get peer list: %s\"",
3233                                 strerror(l_errno));
3234                         rc = -l_errno;
3235                         goto out;
3236                 }
3237                 free(list);
3238                 size = peer_info.prcfg_size;
3239                 list = malloc(size);
3240                 if (list == NULL) {
3241                         l_errno = ENOMEM;
3242                         goto out;
3243                 }
3244         }
3245
3246         /* count is now the actual number of ids in the list. */
3247         for (i = 0; i < count; i++) {
3248                 if (cYAML_create_string(list_root, "nid",
3249                                         libcfs_nid2str(list[i].nid))
3250                     == NULL)
3251                         goto out;
3252         }
3253
3254         /* print output iff show_rc is not provided */
3255         if (show_rc == NULL)
3256                 cYAML_print_tree(root);
3257
3258         snprintf(err_str, sizeof(err_str), "\"success\"");
3259         rc = LUSTRE_CFG_RC_NO_ERR;
3260
3261 out:
3262         if (list != NULL)
3263                 free(list);
3264         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR) {
3265                 cYAML_free_tree(root);
3266         } else if (show_rc != NULL && *show_rc != NULL) {
3267                 struct cYAML *show_node;
3268                 /* find the peer node, if one doesn't exist then
3269                  * insert one.  Otherwise add to the one there
3270                  */
3271                 show_node = cYAML_get_object_item(*show_rc,
3272                                                   "peer");
3273                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
3274                         cYAML_insert_child(show_node, first_seq);
3275                         free(list_root);
3276                         free(root);
3277                 } else if (show_node == NULL) {
3278                         cYAML_insert_sibling((*show_rc)->cy_child,
3279                                              list_root);
3280                         free(root);
3281                 } else {
3282                         cYAML_free_tree(root);
3283                 }
3284         } else {
3285                 *show_rc = root;
3286         }
3287
3288         cYAML_build_error(rc, seq_no, SHOW_CMD, "peer", err_str,
3289                           err_rc);
3290
3291         return rc;
3292 }
3293
3294 static void add_to_global(struct cYAML *show_rc, struct cYAML *node,
3295                           struct cYAML *root)
3296 {
3297         struct cYAML *show_node;
3298
3299         show_node = cYAML_get_object_item(show_rc, "global");
3300         if (show_node != NULL)
3301                 cYAML_insert_sibling(show_node->cy_child,
3302                                      node->cy_child);
3303         else
3304                 cYAML_insert_sibling(show_rc->cy_child,
3305                                      node);
3306         free(root);
3307 }
3308
3309 static int build_global_yaml_entry(char *err_str, int err_len, int seq_no,
3310                                    char *name, __u32 value,
3311                                    struct cYAML **show_rc,
3312                                    struct cYAML **err_rc, int err)
3313 {
3314         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3315         struct cYAML *root = NULL, *global = NULL;
3316
3317         if (err) {
3318                 rc = err;
3319                 goto out;
3320         }
3321
3322         root = cYAML_create_object(NULL, NULL);
3323         if (root == NULL)
3324                 goto out;
3325
3326         global = cYAML_create_object(root, "global");
3327         if (global == NULL)
3328                 goto out;
3329
3330         if (cYAML_create_number(global, name,
3331                                 value) == NULL)
3332                 goto out;
3333
3334         if (show_rc == NULL)
3335                 cYAML_print_tree(root);
3336
3337         snprintf(err_str, err_len, "\"success\"");
3338
3339         rc = LUSTRE_CFG_RC_NO_ERR;
3340
3341 out:
3342         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR) {
3343                 cYAML_free_tree(root);
3344         } else if (show_rc != NULL && *show_rc != NULL) {
3345                 add_to_global(*show_rc, global, root);
3346         } else {
3347                 *show_rc = root;
3348         }
3349
3350         cYAML_build_error(rc, seq_no, SHOW_CMD, "global", err_str, err_rc);
3351
3352         return rc;
3353 }
3354
3355 static int ioctl_show_global_values(int ioc, int seq_no, char *name,
3356                                     struct cYAML **show_rc,
3357                                     struct cYAML **err_rc)
3358 {
3359         struct lnet_ioctl_set_value data;
3360         int rc;
3361         int l_errno = 0;
3362         char err_str[LNET_MAX_STR_LEN];
3363
3364         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
3365
3366         LIBCFS_IOC_INIT_V2(data, sv_hdr);
3367
3368         rc = l_ioctl(LNET_DEV_ID, ioc, &data);
3369         if (rc != 0) {
3370                 l_errno = -errno;
3371                 snprintf(err_str,
3372                          sizeof(err_str),
3373                          "\"cannot get %s: %s\"",
3374                          name, strerror(l_errno));
3375         }
3376
3377         return build_global_yaml_entry(err_str, sizeof(err_str), seq_no, name,
3378                                        data.sv_value, show_rc, err_rc, l_errno);
3379 }
3380
3381 int lustre_lnet_show_hsensitivity(int seq_no, struct cYAML **show_rc,
3382                                   struct cYAML **err_rc)
3383 {
3384         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3385         char val[LNET_MAX_STR_LEN];
3386         int sen = -1, l_errno = 0;
3387         char err_str[LNET_MAX_STR_LEN];
3388
3389         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
3390
3391         rc = read_sysfs_file(modparam_path, "lnet_health_sensitivity", val,
3392                              1, sizeof(val));
3393         if (rc) {
3394                 l_errno = -errno;
3395                 snprintf(err_str, sizeof(err_str),
3396                          "\"cannot get health sensitivity: %d\"", rc);
3397         } else {
3398                 sen = atoi(val);
3399         }
3400
3401         return build_global_yaml_entry(err_str, sizeof(err_str), seq_no,
3402                                        "health_sensitivity", sen, show_rc,
3403                                        err_rc, l_errno);
3404 }
3405
3406 int lustre_lnet_show_transaction_to(int seq_no, struct cYAML **show_rc,
3407                                     struct cYAML **err_rc)
3408 {
3409         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3410         char val[LNET_MAX_STR_LEN];
3411         int tto = -1, l_errno = 0;
3412         char err_str[LNET_MAX_STR_LEN];
3413
3414         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
3415
3416         rc = read_sysfs_file(modparam_path, "lnet_transaction_timeout", val,
3417                              1, sizeof(val));
3418         if (rc) {
3419                 l_errno = -errno;
3420                 snprintf(err_str, sizeof(err_str),
3421                          "\"cannot get transaction timeout: %d\"", rc);
3422         } else {
3423                 tto = atoi(val);
3424         }
3425
3426         return build_global_yaml_entry(err_str, sizeof(err_str), seq_no,
3427                                        "transaction_timeout", tto, show_rc,
3428                                        err_rc, l_errno);
3429 }
3430
3431 int lustre_lnet_show_retry_count(int seq_no, struct cYAML **show_rc,
3432                                  struct cYAML **err_rc)
3433 {
3434         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3435         char val[LNET_MAX_STR_LEN];
3436         int retry_count = -1, l_errno = 0;
3437         char err_str[LNET_MAX_STR_LEN];
3438
3439         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
3440
3441         rc = read_sysfs_file(modparam_path, "lnet_retry_count", val,
3442                              1, sizeof(val));
3443         if (rc) {
3444                 l_errno = -errno;
3445                 snprintf(err_str, sizeof(err_str),
3446                          "\"cannot get retry count: %d\"", rc);
3447         } else {
3448                 retry_count = atoi(val);
3449         }
3450
3451         return build_global_yaml_entry(err_str, sizeof(err_str), seq_no,
3452                                        "retry_count", retry_count, show_rc,
3453                                        err_rc, l_errno);
3454 }
3455
3456 int show_recovery_queue(enum lnet_health_type type, char *name, int seq_no,
3457                         struct cYAML **show_rc, struct cYAML **err_rc)
3458 {
3459         struct lnet_ioctl_recovery_list nid_list;
3460         struct cYAML *root = NULL, *nids = NULL;
3461         int rc, i;
3462         char err_str[LNET_MAX_STR_LEN];
3463
3464         snprintf(err_str, sizeof(err_str), "failed to print recovery queue\n");
3465
3466         LIBCFS_IOC_INIT_V2(nid_list, rlst_hdr);
3467         nid_list.rlst_type = type;
3468
3469         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_RECOVERY_QUEUE, &nid_list);
3470         if (rc) {
3471                 rc = errno;
3472                 goto out;
3473         }
3474
3475         root = cYAML_create_object(NULL, NULL);
3476         if (root == NULL)
3477                 goto out;
3478
3479         nids = cYAML_create_object(root, name);
3480         if (nids == NULL)
3481                 goto out;
3482
3483         rc = -EINVAL;
3484
3485         for (i = 0; i < nid_list.rlst_num_nids; i++) {
3486                 char nidenum[LNET_MAX_STR_LEN];
3487                 snprintf(nidenum, sizeof(nidenum), "nid-%d", i);
3488                 if (!cYAML_create_string(nids, nidenum,
3489                         libcfs_nid2str(nid_list.rlst_nid_array[i])))
3490                         goto out;
3491         }
3492
3493         snprintf(err_str, sizeof(err_str), "success\n");
3494
3495         rc = 0;
3496
3497 out:
3498         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR) {
3499                 cYAML_free_tree(root);
3500         } else if (show_rc != NULL && *show_rc != NULL) {
3501                 struct cYAML *show_node;
3502                 /* find the net node, if one doesn't exist
3503                  * then insert one.  Otherwise add to the one there
3504                  */
3505                 show_node = cYAML_get_object_item(*show_rc, name);
3506                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
3507                         cYAML_insert_child(show_node, nids);
3508                         free(nids);
3509                         free(root);
3510                 } else if (show_node == NULL) {
3511                         cYAML_insert_sibling((*show_rc)->cy_child,
3512                                                 nids);
3513                         free(root);
3514                 } else {
3515                         cYAML_free_tree(root);
3516                 }
3517         } else {
3518                 *show_rc = root;
3519         }
3520
3521         cYAML_build_error(rc, seq_no, SHOW_CMD, name, err_str, err_rc);
3522
3523         return rc;
3524 }
3525
3526 int lustre_lnet_show_local_ni_recovq(int seq_no, struct cYAML **show_rc,
3527                                      struct cYAML **err_rc)
3528 {
3529         return show_recovery_queue(LNET_HEALTH_TYPE_LOCAL_NI, "local NI recovery",
3530                                    seq_no, show_rc, err_rc);
3531 }
3532
3533 int lustre_lnet_show_peer_ni_recovq(int seq_no, struct cYAML **show_rc,
3534                                     struct cYAML **err_rc)
3535 {
3536         return show_recovery_queue(LNET_HEALTH_TYPE_PEER_NI, "peer NI recovery",
3537                                    seq_no, show_rc, err_rc);
3538 }
3539
3540 int lustre_lnet_show_max_intf(int seq_no, struct cYAML **show_rc,
3541                               struct cYAML **err_rc)
3542 {
3543         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3544         char val[LNET_MAX_STR_LEN];
3545         int max_intf = -1, l_errno = 0;
3546         char err_str[LNET_MAX_STR_LEN];
3547
3548         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
3549
3550         rc = read_sysfs_file(modparam_path, "lnet_interfaces_max", val,
3551                              1, sizeof(val));
3552         if (rc) {
3553                 l_errno = -errno;
3554                 snprintf(err_str, sizeof(err_str),
3555                          "\"cannot get max interfaces: %d\"", rc);
3556         } else {
3557                 max_intf = atoi(val);
3558         }
3559
3560         return build_global_yaml_entry(err_str, sizeof(err_str), seq_no,
3561                                        "max_intf", max_intf, show_rc,
3562                                        err_rc, l_errno);
3563 }
3564
3565 int lustre_lnet_show_discovery(int seq_no, struct cYAML **show_rc,
3566                                struct cYAML **err_rc)
3567 {
3568         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3569         char val[LNET_MAX_STR_LEN];
3570         int discovery = -1, l_errno = 0;
3571         char err_str[LNET_MAX_STR_LEN];
3572
3573         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
3574
3575         rc = read_sysfs_file(modparam_path, "lnet_peer_discovery_disabled", val,
3576                              1, sizeof(val));
3577         if (rc) {
3578                 l_errno = -errno;
3579                 snprintf(err_str, sizeof(err_str),
3580                          "\"cannot get discovery setting: %d\"", rc);
3581         } else {
3582                 /*
3583                  * The kernel stores a discovery disabled value. User space
3584                  * shows whether discovery is enabled. So the value must be
3585                  * inverted.
3586                  */
3587                 discovery = !atoi(val);
3588         }
3589
3590         return build_global_yaml_entry(err_str, sizeof(err_str), seq_no,
3591                                        "discovery", discovery, show_rc,
3592                                        err_rc, l_errno);
3593 }
3594
3595 int lustre_lnet_show_numa_range(int seq_no, struct cYAML **show_rc,
3596                                 struct cYAML **err_rc)
3597 {
3598         return ioctl_show_global_values(IOC_LIBCFS_GET_NUMA_RANGE, seq_no,
3599                                         "numa_range", show_rc, err_rc);
3600 }
3601
3602 int lustre_lnet_show_stats(int seq_no, struct cYAML **show_rc,
3603                            struct cYAML **err_rc)
3604 {
3605         struct lnet_ioctl_lnet_stats data;
3606         int rc;
3607         int l_errno;
3608         char err_str[LNET_MAX_STR_LEN];
3609         struct cYAML *root = NULL, *stats = NULL;
3610
3611         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
3612
3613         LIBCFS_IOC_INIT_V2(data, st_hdr);
3614
3615         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_LNET_STATS, &data);
3616         if (rc != 0) {
3617                 l_errno = errno;
3618                 snprintf(err_str,
3619                          sizeof(err_str),
3620                          "\"cannot get lnet statistics: %s\"",
3621                          strerror(l_errno));
3622                 rc = -l_errno;
3623                 goto out;
3624         }
3625
3626         rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3627
3628         root = cYAML_create_object(NULL, NULL);
3629         if (root == NULL)
3630                 goto out;
3631
3632         stats = cYAML_create_object(root, "statistics");
3633         if (stats == NULL)
3634                 goto out;
3635
3636         if (cYAML_create_number(stats, "msgs_alloc",
3637                                 data.st_cntrs.msgs_alloc) == NULL)
3638                 goto out;
3639
3640         if (cYAML_create_number(stats, "msgs_max",
3641                                 data.st_cntrs.msgs_max) == NULL)
3642                 goto out;
3643
3644         if (cYAML_create_number(stats, "rst_alloc",
3645                                 data.st_cntrs.rst_alloc) == NULL)
3646                 goto out;
3647
3648         if (cYAML_create_number(stats, "errors",
3649                                 data.st_cntrs.errors) == NULL)
3650                 goto out;
3651
3652         if (cYAML_create_number(stats, "send_count",
3653                                 data.st_cntrs.send_count) == NULL)
3654                 goto out;
3655
3656         if (cYAML_create_number(stats, "resend_count",
3657                                 data.st_cntrs.resend_count) == NULL)
3658                 goto out;
3659
3660         if (cYAML_create_number(stats, "response_timeout_count",
3661                                 data.st_cntrs.response_timeout_count) == NULL)
3662                 goto out;
3663
3664         if (cYAML_create_number(stats, "local_interrupt_count",
3665                                 data.st_cntrs.local_interrupt_count) == NULL)
3666                 goto out;
3667
3668         if (cYAML_create_number(stats, "local_dropped_count",
3669                                 data.st_cntrs.local_dropped_count) == NULL)
3670                 goto out;
3671
3672         if (cYAML_create_number(stats, "local_aborted_count",
3673                                 data.st_cntrs.local_aborted_count) == NULL)
3674                 goto out;
3675
3676         if (cYAML_create_number(stats, "local_no_route_count",
3677                                 data.st_cntrs.local_no_route_count) == NULL)
3678                 goto out;
3679
3680         if (cYAML_create_number(stats, "local_timeout_count",
3681                                 data.st_cntrs.local_timeout_count) == NULL)
3682                 goto out;
3683
3684         if (cYAML_create_number(stats, "local_error_count",
3685                                 data.st_cntrs.local_error_count) == NULL)
3686                 goto out;
3687
3688         if (cYAML_create_number(stats, "remote_dropped_count",
3689                                 data.st_cntrs.remote_dropped_count) == NULL)
3690                 goto out;
3691
3692         if (cYAML_create_number(stats, "remote_error_count",
3693                                 data.st_cntrs.remote_error_count) == NULL)
3694                 goto out;
3695
3696         if (cYAML_create_number(stats, "remote_timeout_count",
3697                                 data.st_cntrs.remote_timeout_count) == NULL)
3698                 goto out;
3699
3700         if (cYAML_create_number(stats, "network_timeout_count",
3701                                 data.st_cntrs.network_timeout_count) == NULL)
3702                 goto out;
3703
3704         if (cYAML_create_number(stats, "recv_count",
3705                                 data.st_cntrs.recv_count) == NULL)
3706                 goto out;
3707
3708         if (cYAML_create_number(stats, "route_count",
3709                                 data.st_cntrs.route_count) == NULL)
3710                 goto out;
3711
3712         if (cYAML_create_number(stats, "drop_count",
3713                                 data.st_cntrs.drop_count) == NULL)
3714                 goto out;
3715
3716         if (cYAML_create_number(stats, "send_length",
3717                                 data.st_cntrs.send_length) == NULL)
3718                 goto out;
3719
3720         if (cYAML_create_number(stats, "recv_length",
3721                                 data.st_cntrs.recv_length) == NULL)
3722                 goto out;
3723
3724         if (cYAML_create_number(stats, "route_length",
3725                                 data.st_cntrs.route_length) == NULL)
3726                 goto out;
3727
3728         if (cYAML_create_number(stats, "drop_length",
3729                                 data.st_cntrs.drop_length) == NULL)
3730                 goto out;
3731
3732         if (show_rc == NULL)
3733                 cYAML_print_tree(root);
3734
3735         snprintf(err_str, sizeof(err_str), "\"success\"");
3736         rc = LUSTRE_CFG_RC_NO_ERR;
3737 out:
3738         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR) {
3739                 cYAML_free_tree(root);
3740         } else if (show_rc != NULL && *show_rc != NULL) {
3741                 cYAML_insert_sibling((*show_rc)->cy_child,
3742                                         root->cy_child);
3743                 free(root);
3744         } else {
3745                 *show_rc = root;
3746         }
3747
3748         cYAML_build_error(rc, seq_no, SHOW_CMD, "statistics", err_str, err_rc);
3749
3750         return rc;
3751 }
3752
3753 typedef int (*cmd_handler_t)(struct cYAML *tree,
3754                              struct cYAML **show_rc,
3755                              struct cYAML **err_rc);
3756
3757 static int handle_yaml_config_route(struct cYAML *tree, struct cYAML **show_rc,
3758                                     struct cYAML **err_rc)
3759 {
3760         struct cYAML *net, *gw, *hop, *prio, *seq_no;
3761
3762         net = cYAML_get_object_item(tree, "net");
3763         gw = cYAML_get_object_item(tree, "gateway");
3764         hop = cYAML_get_object_item(tree, "hop");
3765         prio = cYAML_get_object_item(tree, "priority");
3766         seq_no = cYAML_get_object_item(tree, "seq_no");
3767
3768         return lustre_lnet_config_route((net) ? net->cy_valuestring : NULL,
3769                                         (gw) ? gw->cy_valuestring : NULL,
3770                                         (hop) ? hop->cy_valueint : -1,
3771                                         (prio) ? prio->cy_valueint : -1,
3772                                         (seq_no) ? seq_no->cy_valueint : -1,
3773                                         err_rc);
3774 }
3775
3776 static void yaml_free_string_array(char **array, int num)
3777 {
3778         int i;
3779         char **sub_array = array;
3780
3781         for (i = 0; i < num; i++) {
3782                 if (*sub_array != NULL)
3783                         free(*sub_array);
3784                 sub_array++;
3785         }
3786         if (array)
3787                 free(array);
3788 }
3789
3790 /*
3791  *    interfaces:
3792  *        0: <intf_name>['['<expr>']']
3793  *        1: <intf_name>['['<expr>']']
3794  */
3795 static int yaml_copy_intf_info(struct cYAML *intf_tree,
3796                                struct lnet_dlc_network_descr *nw_descr)
3797 {
3798         struct cYAML *child = NULL;
3799         int intf_num = 0, rc = LUSTRE_CFG_RC_NO_ERR;
3800         struct lnet_dlc_intf_descr *intf_descr, *tmp;
3801
3802         if (intf_tree == NULL || nw_descr == NULL)
3803                 return LUSTRE_CFG_RC_BAD_PARAM;
3804
3805         /* now grab all the interfaces and their cpts */
3806         child = intf_tree->cy_child;
3807         while (child != NULL) {
3808                 if (child->cy_valuestring == NULL) {
3809                         child = child->cy_next;
3810                         continue;
3811                 }
3812
3813                 if (strlen(child->cy_valuestring) >= LNET_MAX_STR_LEN)
3814                         goto failed;
3815
3816                 rc = lustre_lnet_add_intf_descr(&nw_descr->nw_intflist,
3817                                                 child->cy_valuestring,
3818                                                 strlen(child->cy_valuestring));
3819                 if (rc != LUSTRE_CFG_RC_NO_ERR)
3820                         goto failed;
3821
3822                 intf_num++;
3823                 child = child->cy_next;
3824         }
3825
3826         if (intf_num == 0)
3827                 return LUSTRE_CFG_RC_MISSING_PARAM;
3828
3829         return intf_num;
3830
3831 failed:
3832         list_for_each_entry_safe(intf_descr, tmp, &nw_descr->nw_intflist,
3833                                  intf_on_network) {
3834                 list_del(&intf_descr->intf_on_network);
3835                 free_intf_descr(intf_descr);
3836         }
3837
3838         return rc;
3839 }
3840
3841 static bool
3842 yaml_extract_cmn_tunables(struct cYAML *tree,
3843                           struct lnet_ioctl_config_lnd_cmn_tunables *tunables,
3844                           struct cfs_expr_list **global_cpts)
3845 {
3846         struct cYAML *tun, *item, *smp;
3847         int rc;
3848
3849         tun = cYAML_get_object_item(tree, "tunables");
3850         if (tun != NULL) {
3851                 item = cYAML_get_object_item(tun, "peer_timeout");
3852                 if (item != NULL)
3853                         tunables->lct_peer_timeout = item->cy_valueint;
3854                 item = cYAML_get_object_item(tun, "peer_credits");
3855                 if (item != NULL)
3856                         tunables->lct_peer_tx_credits = item->cy_valueint;
3857                 item = cYAML_get_object_item(tun, "peer_buffer_credits");
3858                 if (item != NULL)
3859                         tunables->lct_peer_rtr_credits = item->cy_valueint;
3860                 item = cYAML_get_object_item(tun, "credits");
3861                 if (item != NULL)
3862                         tunables->lct_max_tx_credits = item->cy_valueint;
3863                 smp = cYAML_get_object_item(tun, "CPT");
3864                 if (smp != NULL) {
3865                         rc = cfs_expr_list_parse(smp->cy_valuestring,
3866                                                  strlen(smp->cy_valuestring),
3867                                                  0, UINT_MAX, global_cpts);
3868                         if (rc != 0)
3869                                 *global_cpts = NULL;
3870                 }
3871
3872                 return true;
3873         }
3874
3875         return false;
3876 }
3877
3878 static bool
3879 yaml_extract_tunables(struct cYAML *tree,
3880                       struct lnet_ioctl_config_lnd_tunables *tunables,
3881                       struct cfs_expr_list **global_cpts,
3882                       __u32 net_type)
3883 {
3884         bool rc;
3885
3886         rc = yaml_extract_cmn_tunables(tree, &tunables->lt_cmn,
3887                                        global_cpts);
3888
3889         if (!rc)
3890                 return rc;
3891
3892         lustre_yaml_extract_lnd_tunables(tree, net_type,
3893                                          &tunables->lt_tun);
3894
3895         return rc;
3896 }
3897
3898 /*
3899  * net:
3900  *    - net type: <net>[<NUM>]
3901   *      local NI(s):
3902  *        - nid: <ip>@<net>[<NUM>]
3903  *          status: up
3904  *          interfaces:
3905  *               0: <intf_name>['['<expr>']']
3906  *               1: <intf_name>['['<expr>']']
3907  *        tunables:
3908  *               peer_timeout: <NUM>
3909  *               peer_credits: <NUM>
3910  *               peer_buffer_credits: <NUM>
3911  *               credits: <NUM>
3912 *         lnd tunables:
3913  *               peercredits_hiw: <NUM>
3914  *               map_on_demand: <NUM>
3915  *               concurrent_sends: <NUM>
3916  *               fmr_pool_size: <NUM>
3917  *               fmr_flush_trigger: <NUM>
3918  *               fmr_cache: <NUM>
3919  *
3920  * At least one interface is required. If no interfaces are provided the
3921  * network interface can not be configured.
3922  */
3923 static int handle_yaml_config_ni(struct cYAML *tree, struct cYAML **show_rc,
3924                                  struct cYAML **err_rc)
3925 {
3926         struct cYAML *net, *intf, *seq_no, *ip2net = NULL, *local_nis = NULL,
3927                      *item = NULL;
3928         int num_entries = 0, rc;
3929         struct lnet_dlc_network_descr nw_descr;
3930         struct cfs_expr_list *global_cpts = NULL;
3931         struct lnet_ioctl_config_lnd_tunables tunables;
3932         bool found = false;
3933
3934         memset(&tunables, 0, sizeof(tunables));
3935
3936         INIT_LIST_HEAD(&nw_descr.network_on_rule);
3937         INIT_LIST_HEAD(&nw_descr.nw_intflist);
3938
3939         ip2net = cYAML_get_object_item(tree, "ip2net");
3940         net = cYAML_get_object_item(tree, "net type");
3941         if (net)
3942                 nw_descr.nw_id = libcfs_str2net(net->cy_valuestring);
3943         else
3944                 nw_descr.nw_id = LOLND;
3945
3946         /*
3947          * if neither net nor ip2nets are present, then we can not
3948          * configure the network.
3949          */
3950         if (!net && !ip2net)
3951                 return LUSTRE_CFG_RC_MISSING_PARAM;
3952
3953         local_nis = cYAML_get_object_item(tree, "local NI(s)");
3954         if (local_nis == NULL)
3955                 return LUSTRE_CFG_RC_MISSING_PARAM;
3956
3957         if (!cYAML_is_sequence(local_nis))
3958                 return LUSTRE_CFG_RC_BAD_PARAM;
3959
3960         while (cYAML_get_next_seq_item(local_nis, &item) != NULL) {
3961                 intf = cYAML_get_object_item(item, "interfaces");
3962                 if (intf == NULL)
3963                         continue;
3964                 num_entries = yaml_copy_intf_info(intf, &nw_descr);
3965                 if (num_entries <= 0) {
3966                         cYAML_build_error(num_entries, -1, "ni", "add",
3967                                         "bad interface list",
3968                                         err_rc);
3969                         return LUSTRE_CFG_RC_BAD_PARAM;
3970                 }
3971         }
3972
3973         found = yaml_extract_tunables(tree, &tunables, &global_cpts,
3974                                       LNET_NETTYP(nw_descr.nw_id));
3975         seq_no = cYAML_get_object_item(tree, "seq_no");
3976
3977         rc = lustre_lnet_config_ni(&nw_descr,
3978                                    global_cpts,
3979                                    (ip2net) ? ip2net->cy_valuestring : NULL,
3980                                    (found) ? &tunables: NULL,
3981                                    (seq_no) ? seq_no->cy_valueint : -1,
3982                                    err_rc);
3983
3984         if (global_cpts != NULL)
3985                 cfs_expr_list_free(global_cpts);
3986
3987         return rc;
3988 }
3989
3990 /*
3991  * ip2nets:
3992  *  - net-spec: <tcp|o2ib|gni>[NUM]
3993  *    interfaces:
3994  *        0: <intf name>['['<expr>']']
3995  *        1: <intf name>['['<expr>']']
3996  *    ip-range:
3997  *        0: <expr.expr.expr.expr>
3998  *        1: <expr.expr.expr.expr>
3999  */
4000 static int handle_yaml_config_ip2nets(struct cYAML *tree,
4001                                       struct cYAML **show_rc,
4002                                       struct cYAML **err_rc)
4003 {
4004         struct cYAML *net, *ip_range, *item = NULL, *intf = NULL,
4005                      *seq_no = NULL;
4006         struct lustre_lnet_ip2nets ip2nets;
4007         struct lustre_lnet_ip_range_descr *ip_range_descr = NULL,
4008                                           *tmp = NULL;
4009         int rc = LUSTRE_CFG_RC_NO_ERR;
4010         struct cfs_expr_list *global_cpts = NULL;
4011         struct cfs_expr_list *el, *el_tmp;
4012         struct lnet_ioctl_config_lnd_tunables tunables;
4013         struct lnet_dlc_intf_descr *intf_descr, *intf_tmp;
4014         bool found = false;
4015
4016         memset(&tunables, 0, sizeof(tunables));
4017
4018         /* initialize all lists */
4019         INIT_LIST_HEAD(&ip2nets.ip2nets_ip_ranges);
4020         INIT_LIST_HEAD(&ip2nets.ip2nets_net.network_on_rule);
4021         INIT_LIST_HEAD(&ip2nets.ip2nets_net.nw_intflist);
4022
4023         net = cYAML_get_object_item(tree, "net-spec");
4024         if (net == NULL)
4025                 return LUSTRE_CFG_RC_BAD_PARAM;
4026
4027         if (net != NULL && net->cy_valuestring == NULL)
4028                 return LUSTRE_CFG_RC_BAD_PARAM;
4029
4030         /* assign the network id */
4031         ip2nets.ip2nets_net.nw_id = libcfs_str2net(net->cy_valuestring);
4032         if (ip2nets.ip2nets_net.nw_id == LNET_NID_ANY)
4033                 return LUSTRE_CFG_RC_BAD_PARAM;
4034
4035         seq_no = cYAML_get_object_item(tree, "seq_no");
4036
4037         intf = cYAML_get_object_item(tree, "interfaces");
4038         if (intf != NULL) {
4039                 rc = yaml_copy_intf_info(intf, &ip2nets.ip2nets_net);
4040                 if (rc <= 0)
4041                         return LUSTRE_CFG_RC_BAD_PARAM;
4042         }
4043
4044         ip_range = cYAML_get_object_item(tree, "ip-range");
4045         if (ip_range != NULL) {
4046                 item = ip_range->cy_child;
4047                 while (item != NULL) {
4048                         if (item->cy_valuestring == NULL) {
4049                                 item = item->cy_next;
4050                                 continue;
4051                         }
4052
4053                         rc = lustre_lnet_add_ip_range(&ip2nets.ip2nets_ip_ranges,
4054                                                       item->cy_valuestring);
4055
4056                         if (rc != LUSTRE_CFG_RC_NO_ERR)
4057                                 goto out;
4058
4059                         item = item->cy_next;
4060                 }
4061         }
4062
4063         found = yaml_extract_tunables(tree, &tunables, &global_cpts,
4064                                       LNET_NETTYP(ip2nets.ip2nets_net.nw_id));
4065
4066         rc = lustre_lnet_config_ip2nets(&ip2nets,
4067                         (found) ? &tunables : NULL,
4068                         global_cpts,
4069                         (seq_no) ? seq_no->cy_valueint : -1,
4070                         err_rc);
4071
4072         /*
4073          * don't stop because there was no match. Continue processing the
4074          * rest of the rules. If non-match then nothing is configured
4075          */
4076         if (rc == LUSTRE_CFG_RC_NO_MATCH)
4077                 rc = LUSTRE_CFG_RC_NO_ERR;
4078 out:
4079         list_for_each_entry_safe(intf_descr, intf_tmp,
4080                                  &ip2nets.ip2nets_net.nw_intflist,
4081                                  intf_on_network) {
4082                 list_del(&intf_descr->intf_on_network);
4083                 free_intf_descr(intf_descr);
4084         }
4085
4086         list_for_each_entry_safe(ip_range_descr, tmp,
4087                                  &ip2nets.ip2nets_ip_ranges,
4088                                  ipr_entry) {
4089                 list_del(&ip_range_descr->ipr_entry);
4090                 list_for_each_entry_safe(el, el_tmp, &ip_range_descr->ipr_expr,
4091                                          el_link) {
4092                         list_del(&el->el_link);
4093                         cfs_expr_list_free(el);
4094                 }
4095                 free(ip_range_descr);
4096         }
4097
4098         return rc;
4099 }
4100
4101 static int handle_yaml_del_ni(struct cYAML *tree, struct cYAML **show_rc,
4102                               struct cYAML **err_rc)
4103 {
4104         struct cYAML *net = NULL, *intf = NULL, *seq_no = NULL, *item = NULL,
4105                      *local_nis = NULL;
4106         int num_entries, rc;
4107         struct lnet_dlc_network_descr nw_descr;
4108
4109         INIT_LIST_HEAD(&nw_descr.network_on_rule);
4110         INIT_LIST_HEAD(&nw_descr.nw_intflist);
4111
4112         net = cYAML_get_object_item(tree, "net type");
4113         if (net != NULL)
4114                 nw_descr.nw_id = libcfs_str2net(net->cy_valuestring);
4115
4116         local_nis = cYAML_get_object_item(tree, "local NI(s)");
4117         if (local_nis == NULL)
4118                 return LUSTRE_CFG_RC_MISSING_PARAM;
4119
4120         if (!cYAML_is_sequence(local_nis))
4121                 return LUSTRE_CFG_RC_BAD_PARAM;
4122
4123         while (cYAML_get_next_seq_item(local_nis, &item) != NULL) {
4124                 intf = cYAML_get_object_item(item, "interfaces");
4125                 if (intf == NULL)
4126                         continue;
4127                 num_entries = yaml_copy_intf_info(intf, &nw_descr);
4128                 if (num_entries <= 0) {
4129                         cYAML_build_error(num_entries, -1, "ni", "add",
4130                                         "bad interface list",
4131                                         err_rc);
4132                         return LUSTRE_CFG_RC_BAD_PARAM;
4133                 }
4134         }
4135
4136         seq_no = cYAML_get_object_item(tree, "seq_no");
4137
4138         rc = lustre_lnet_del_ni((net) ? &nw_descr : NULL,
4139                                 (seq_no) ? seq_no->cy_valueint : -1,
4140                                 err_rc);
4141
4142         return rc;
4143 }
4144
4145 static int yaml_copy_peer_nids(struct cYAML *nids_entry, char ***nidsppp,
4146                                char *prim_nid, bool del)
4147 {
4148         struct cYAML *child = NULL, *entry = NULL;
4149         char **nids = NULL;
4150         int num = 0, rc = LUSTRE_CFG_RC_NO_ERR;
4151
4152         if (cYAML_is_sequence(nids_entry)) {
4153                 while (cYAML_get_next_seq_item(nids_entry, &child)) {
4154                         entry = cYAML_get_object_item(child, "nid");
4155                         /* don't count an empty entry */
4156                         if (!entry || !entry->cy_valuestring)
4157                                 continue;
4158
4159                         if (prim_nid &&
4160                             (strcmp(entry->cy_valuestring, prim_nid)
4161                                         == 0) && del) {
4162                                 /*
4163                                  * primary nid is present in the list of
4164                                  * nids so that means we want to delete
4165                                  * the entire peer, so no need to go
4166                                  * further. Just delete the entire peer.
4167                                  */
4168                                 return 0;
4169                         }
4170
4171                         num++;
4172                 }
4173         }
4174
4175         if (num == 0)
4176                 return LUSTRE_CFG_RC_MISSING_PARAM;
4177
4178         nids = calloc(sizeof(*nids), num);
4179         if (!nids)
4180                 return LUSTRE_CFG_RC_OUT_OF_MEM;
4181
4182         /* now grab all the nids */
4183         num = 0;
4184         child = NULL;
4185         while (cYAML_get_next_seq_item(nids_entry, &child)) {
4186                 entry = cYAML_get_object_item(child, "nid");
4187                 if (!entry || !entry->cy_valuestring)
4188                         continue;
4189
4190                 nids[num] = calloc(strlen(entry->cy_valuestring) + 1, 1);
4191                 if (!nids[num]) {
4192                         rc = LUSTRE_CFG_RC_OUT_OF_MEM;
4193                         goto failed;
4194                 }
4195                 strncpy(nids[num], entry->cy_valuestring,
4196                         strlen(entry->cy_valuestring));
4197                 num++;
4198         }
4199         rc = num;
4200
4201         *nidsppp = nids;
4202         return rc;
4203
4204 failed:
4205         if (nids != NULL)
4206                 yaml_free_string_array(nids, num);
4207         *nidsppp = NULL;
4208         return rc;
4209 }
4210
4211 static int handle_yaml_config_peer(struct cYAML *tree, struct cYAML **show_rc,
4212                                    struct cYAML **err_rc)
4213 {
4214         char **nids = NULL;
4215         int num, rc;
4216         struct cYAML *seq_no, *prim_nid, *non_mr, *ip2nets, *peer_nis;
4217         char err_str[LNET_MAX_STR_LEN];
4218
4219         seq_no = cYAML_get_object_item(tree, "seq_no");
4220         prim_nid = cYAML_get_object_item(tree, "primary nid");
4221         non_mr = cYAML_get_object_item(tree, "non_mr");
4222         ip2nets = cYAML_get_object_item(tree, "ip2nets");
4223         peer_nis = cYAML_get_object_item(tree, "peer ni");
4224
4225         if (ip2nets && (prim_nid || peer_nis)) {
4226                 rc = LUSTRE_CFG_RC_BAD_PARAM;
4227                 snprintf(err_str, sizeof(err_str),
4228                          "ip2nets can not be specified along side prim_nid"
4229                          " or peer ni fields");
4230                 cYAML_build_error(rc, (seq_no) ? seq_no->cy_valueint : -1,
4231                                   ADD_CMD, "peer", err_str, err_rc);
4232                 return rc;
4233         }
4234
4235         num = yaml_copy_peer_nids((ip2nets) ? ip2nets : peer_nis, &nids,
4236                                   (prim_nid) ? prim_nid->cy_valuestring : NULL,
4237                                    false);
4238
4239         if (num < 0) {
4240                 snprintf(err_str, sizeof(err_str),
4241                          "error copying nids from YAML block");
4242                 cYAML_build_error(num, (seq_no) ? seq_no->cy_valueint : -1,
4243                                   ADD_CMD, "peer", err_str, err_rc);
4244                 return num;
4245         }
4246
4247         rc = lustre_lnet_config_peer_nid((prim_nid) ? prim_nid->cy_valuestring : NULL,
4248                                          nids, num,
4249                                          (non_mr) ? false : true,
4250                                          (ip2nets) ? true : false,
4251                                          (seq_no) ? seq_no->cy_valueint : -1,
4252                                          err_rc);
4253
4254         yaml_free_string_array(nids, num);
4255         return rc;
4256 }
4257
4258 static int handle_yaml_del_peer(struct cYAML *tree, struct cYAML **show_rc,
4259                                 struct cYAML **err_rc)
4260 {
4261         char **nids = NULL;
4262         int num, rc;
4263         struct cYAML *seq_no, *prim_nid, *ip2nets, *peer_nis;
4264         char err_str[LNET_MAX_STR_LEN];
4265
4266         seq_no = cYAML_get_object_item(tree, "seq_no");
4267         prim_nid = cYAML_get_object_item(tree, "primary nid");
4268         ip2nets = cYAML_get_object_item(tree, "ip2nets");
4269         peer_nis = cYAML_get_object_item(tree, "peer ni");
4270
4271         if (ip2nets && (prim_nid || peer_nis)) {
4272                 rc = LUSTRE_CFG_RC_BAD_PARAM;
4273                 snprintf(err_str, sizeof(err_str),
4274                          "ip2nets can not be specified along side prim_nid"
4275                          " or peer ni fields");
4276                 cYAML_build_error(rc, (seq_no) ? seq_no->cy_valueint : -1,
4277                                   DEL_CMD, "peer", err_str, err_rc);
4278                 return rc;
4279         }
4280
4281         num = yaml_copy_peer_nids((ip2nets) ? ip2nets : peer_nis , &nids,
4282                                   (prim_nid) ? prim_nid->cy_valuestring : NULL,
4283                                   true);
4284         if (num < 0) {
4285                 snprintf(err_str, sizeof(err_str),
4286                          "error copying nids from YAML block");
4287                 cYAML_build_error(num, (seq_no) ? seq_no->cy_valueint : -1,
4288                                   ADD_CMD, "peer", err_str, err_rc);
4289                 return num;
4290         }
4291
4292         rc = lustre_lnet_del_peer_nid((prim_nid) ? prim_nid->cy_valuestring : NULL,
4293                                       nids, num, (ip2nets) ? true : false,
4294                                       (seq_no) ? seq_no->cy_valueint : -1,
4295                                       err_rc);
4296
4297         yaml_free_string_array(nids, num);
4298         return rc;
4299 }
4300
4301 static int handle_yaml_config_buffers(struct cYAML *tree,
4302                                       struct cYAML **show_rc,
4303                                       struct cYAML **err_rc)
4304 {
4305         int rc;
4306         struct cYAML *tiny, *small, *large, *seq_no;
4307
4308         tiny = cYAML_get_object_item(tree, "tiny");
4309         small = cYAML_get_object_item(tree, "small");
4310         large = cYAML_get_object_item(tree, "large");
4311         seq_no = cYAML_get_object_item(tree, "seq_no");
4312
4313         rc = lustre_lnet_config_buffers((tiny) ? tiny->cy_valueint : -1,
4314                                         (small) ? small->cy_valueint : -1,
4315                                         (large) ? large->cy_valueint : -1,
4316                                         (seq_no) ? seq_no->cy_valueint : -1,
4317                                         err_rc);
4318
4319         return rc;
4320 }
4321
4322 static int handle_yaml_config_routing(struct cYAML *tree,
4323                                       struct cYAML **show_rc,
4324                                       struct cYAML **err_rc)
4325 {
4326         int rc = LUSTRE_CFG_RC_NO_ERR;
4327         struct cYAML *seq_no, *enable;
4328
4329         seq_no = cYAML_get_object_item(tree, "seq_no");
4330         enable = cYAML_get_object_item(tree, "enable");
4331
4332         if (enable) {
4333                 rc = lustre_lnet_enable_routing(enable->cy_valueint,
4334                                                 (seq_no) ?
4335                                                     seq_no->cy_valueint : -1,
4336                                                 err_rc);
4337         }
4338
4339         return rc;
4340 }
4341
4342 static int handle_yaml_del_route(struct cYAML *tree, struct cYAML **show_rc,
4343                                  struct cYAML **err_rc)
4344 {
4345         struct cYAML *net;
4346         struct cYAML *gw;
4347         struct cYAML *seq_no;
4348
4349         net = cYAML_get_object_item(tree, "net");
4350         gw = cYAML_get_object_item(tree, "gateway");
4351         seq_no = cYAML_get_object_item(tree, "seq_no");
4352
4353         return lustre_lnet_del_route((net) ? net->cy_valuestring : NULL,
4354                                      (gw) ? gw->cy_valuestring : NULL,
4355                                      (seq_no) ? seq_no->cy_valueint : -1,
4356                                      err_rc);
4357 }
4358
4359 static int handle_yaml_del_routing(struct cYAML *tree, struct cYAML **show_rc,
4360                                    struct cYAML **err_rc)
4361 {
4362         struct cYAML *seq_no;
4363
4364         seq_no = cYAML_get_object_item(tree, "seq_no");
4365
4366         return lustre_lnet_enable_routing(0, (seq_no) ?
4367                                                 seq_no->cy_valueint : -1,
4368                                         err_rc);
4369 }
4370
4371 static int handle_yaml_show_route(struct cYAML *tree, struct cYAML **show_rc,
4372                                   struct cYAML **err_rc)
4373 {
4374         struct cYAML *net;
4375         struct cYAML *gw;
4376         struct cYAML *hop;
4377         struct cYAML *prio;
4378         struct cYAML *detail;
4379         struct cYAML *seq_no;
4380
4381         net = cYAML_get_object_item(tree, "net");
4382         gw = cYAML_get_object_item(tree, "gateway");
4383         hop = cYAML_get_object_item(tree, "hop");
4384         prio = cYAML_get_object_item(tree, "priority");
4385         detail = cYAML_get_object_item(tree, "detail");
4386         seq_no = cYAML_get_object_item(tree, "seq_no");
4387
4388         return lustre_lnet_show_route((net) ? net->cy_valuestring : NULL,
4389                                       (gw) ? gw->cy_valuestring : NULL,
4390                                       (hop) ? hop->cy_valueint : -1,
4391                                       (prio) ? prio->cy_valueint : -1,
4392                                       (detail) ? detail->cy_valueint : 0,
4393                                       (seq_no) ? seq_no->cy_valueint : -1,
4394                                       show_rc, err_rc, false);
4395 }
4396
4397 static int handle_yaml_show_net(struct cYAML *tree, struct cYAML **show_rc,
4398                                 struct cYAML **err_rc)
4399 {
4400         struct cYAML *net, *detail, *seq_no;
4401
4402         net = cYAML_get_object_item(tree, "net");
4403         detail = cYAML_get_object_item(tree, "detail");
4404         seq_no = cYAML_get_object_item(tree, "seq_no");
4405
4406         return lustre_lnet_show_net((net) ? net->cy_valuestring : NULL,
4407                                     (detail) ? detail->cy_valueint : 0,
4408                                     (seq_no) ? seq_no->cy_valueint : -1,
4409                                     show_rc, err_rc, false);
4410 }
4411
4412 static int handle_yaml_show_routing(struct cYAML *tree, struct cYAML **show_rc,
4413                                     struct cYAML **err_rc)
4414 {
4415         struct cYAML *seq_no;
4416
4417         seq_no = cYAML_get_object_item(tree, "seq_no");
4418
4419         return lustre_lnet_show_routing((seq_no) ? seq_no->cy_valueint : -1,
4420                                         show_rc, err_rc, false);
4421 }
4422
4423 static int handle_yaml_show_peers(struct cYAML *tree, struct cYAML **show_rc,
4424                                   struct cYAML **err_rc)
4425 {
4426         struct cYAML *seq_no, *nid, *detail;
4427
4428         seq_no = cYAML_get_object_item(tree, "seq_no");
4429         detail = cYAML_get_object_item(tree, "detail");
4430         nid = cYAML_get_object_item(tree, "nid");
4431
4432         return lustre_lnet_show_peer((nid) ? nid->cy_valuestring : NULL,
4433                                      (detail) ? detail->cy_valueint : 0,
4434                                      (seq_no) ? seq_no->cy_valueint : -1,
4435                                      show_rc, err_rc, false);
4436 }
4437
4438 static int handle_yaml_show_stats(struct cYAML *tree, struct cYAML **show_rc,
4439                                   struct cYAML **err_rc)
4440 {
4441         struct cYAML *seq_no;
4442
4443         seq_no = cYAML_get_object_item(tree, "seq_no");
4444
4445         return lustre_lnet_show_stats((seq_no) ? seq_no->cy_valueint : -1,
4446                                       show_rc, err_rc);
4447 }
4448
4449 static int handle_yaml_config_numa(struct cYAML *tree, struct cYAML **show_rc,
4450                                   struct cYAML **err_rc)
4451 {
4452         struct cYAML *seq_no, *range;
4453
4454         seq_no = cYAML_get_object_item(tree, "seq_no");
4455         range = cYAML_get_object_item(tree, "range");
4456
4457         return lustre_lnet_config_numa_range(range ? range->cy_valueint : -1,
4458                                              seq_no ? seq_no->cy_valueint : -1,
4459                                              err_rc);
4460 }
4461
4462 static int handle_yaml_del_numa(struct cYAML *tree, struct cYAML **show_rc,
4463                                struct cYAML **err_rc)
4464 {
4465         struct cYAML *seq_no;
4466
4467         seq_no = cYAML_get_object_item(tree, "seq_no");
4468
4469         return lustre_lnet_config_numa_range(0, seq_no ? seq_no->cy_valueint : -1,
4470                                              err_rc);
4471 }
4472
4473 static int handle_yaml_show_numa(struct cYAML *tree, struct cYAML **show_rc,
4474                                 struct cYAML **err_rc)
4475 {
4476         struct cYAML *seq_no;
4477
4478         seq_no = cYAML_get_object_item(tree, "seq_no");
4479
4480         return lustre_lnet_show_numa_range(seq_no ? seq_no->cy_valueint : -1,
4481                                            show_rc, err_rc);
4482 }
4483
4484 static int handle_yaml_config_global_settings(struct cYAML *tree,
4485                                               struct cYAML **show_rc,
4486                                               struct cYAML **err_rc)
4487 {
4488         struct cYAML *max_intf, *numa, *discovery, *retry, *tto, *seq_no,
4489                      *sen;
4490         int rc = 0;
4491
4492         seq_no = cYAML_get_object_item(tree, "seq_no");
4493         max_intf = cYAML_get_object_item(tree, "max_intf");
4494         if (max_intf)
4495                 rc = lustre_lnet_config_max_intf(max_intf->cy_valueint,
4496                                                  seq_no ? seq_no->cy_valueint
4497                                                         : -1,
4498                                                  err_rc);
4499
4500         numa = cYAML_get_object_item(tree, "numa_range");
4501         if (numa)
4502                 rc = lustre_lnet_config_numa_range(numa->cy_valueint,
4503                                                    seq_no ? seq_no->cy_valueint
4504                                                         : -1,
4505                                                    err_rc);
4506
4507         discovery = cYAML_get_object_item(tree, "discovery");
4508         if (discovery)
4509                 rc = lustre_lnet_config_discovery(discovery->cy_valueint,
4510                                                   seq_no ? seq_no->cy_valueint
4511                                                         : -1,
4512                                                   err_rc);
4513
4514         retry = cYAML_get_object_item(tree, "retry_count");
4515         if (retry)
4516                 rc = lustre_lnet_config_retry_count(retry->cy_valueint,
4517                                                     seq_no ? seq_no->cy_valueint
4518                                                         : -1,
4519                                                     err_rc);
4520
4521         tto = cYAML_get_object_item(tree, "transaction_timeout");
4522         if (tto)
4523                 rc = lustre_lnet_config_transaction_to(tto->cy_valueint,
4524                                                        seq_no ? seq_no->cy_valueint
4525                                                                 : -1,
4526                                                        err_rc);
4527
4528         sen = cYAML_get_object_item(tree, "health_sensitivity");
4529         if (sen)
4530                 rc = lustre_lnet_config_hsensitivity(sen->cy_valueint,
4531                                                      seq_no ? seq_no->cy_valueint
4532                                                         : -1,
4533                                                      err_rc);
4534
4535         return rc;
4536 }
4537
4538 static int handle_yaml_del_global_settings(struct cYAML *tree,
4539                                            struct cYAML **show_rc,
4540                                            struct cYAML **err_rc)
4541 {
4542         struct cYAML *max_intf, *numa, *discovery, *seq_no;
4543         int rc = 0;
4544
4545         seq_no = cYAML_get_object_item(tree, "seq_no");
4546         max_intf = cYAML_get_object_item(tree, "max_intf");
4547         if (max_intf)
4548                 rc = lustre_lnet_config_max_intf(LNET_INTERFACES_MAX_DEFAULT,
4549                                                  seq_no ? seq_no->cy_valueint
4550                                                         : -1,
4551                                                  err_rc);
4552
4553         numa = cYAML_get_object_item(tree, "numa_range");
4554         if (numa)
4555                 rc = lustre_lnet_config_numa_range(0,
4556                                                    seq_no ? seq_no->cy_valueint
4557                                                         : -1,
4558                                                    err_rc);
4559
4560         /* peer discovery is enabled by default */
4561         discovery = cYAML_get_object_item(tree, "discovery");
4562         if (discovery)
4563                 rc = lustre_lnet_config_discovery(1,
4564                                                   seq_no ? seq_no->cy_valueint
4565                                                         : -1,
4566                                                   err_rc);
4567
4568         return rc;
4569 }
4570
4571 static int handle_yaml_show_global_settings(struct cYAML *tree,
4572                                             struct cYAML **show_rc,
4573                                             struct cYAML **err_rc)
4574 {
4575         struct cYAML *max_intf, *numa, *discovery, *retry, *tto, *seq_no,
4576                      *sen;
4577         int rc = 0;
4578
4579         seq_no = cYAML_get_object_item(tree, "seq_no");
4580         max_intf = cYAML_get_object_item(tree, "max_intf");
4581         if (max_intf)
4582                 rc = lustre_lnet_show_max_intf(seq_no ? seq_no->cy_valueint
4583                                                         : -1,
4584                                                 show_rc, err_rc);
4585
4586         numa = cYAML_get_object_item(tree, "numa_range");
4587         if (numa)
4588                 rc = lustre_lnet_show_numa_range(seq_no ? seq_no->cy_valueint
4589                                                         : -1,
4590                                                  show_rc, err_rc);
4591
4592         discovery = cYAML_get_object_item(tree, "discovery");
4593         if (discovery)
4594                 rc = lustre_lnet_show_discovery(seq_no ? seq_no->cy_valueint
4595                                                         : -1,
4596                                                 show_rc, err_rc);
4597
4598         retry = cYAML_get_object_item(tree, "retry_count");
4599         if (retry)
4600                 rc = lustre_lnet_show_retry_count(seq_no ? seq_no->cy_valueint
4601                                                         : -1,
4602                                                   show_rc, err_rc);
4603
4604         tto = cYAML_get_object_item(tree, "transaction_timeout");
4605         if (tto)
4606                 rc = lustre_lnet_show_transaction_to(seq_no ? seq_no->cy_valueint
4607                                                         : -1,
4608                                                      show_rc, err_rc);
4609
4610         sen = cYAML_get_object_item(tree, "health_sensitivity");
4611         if (sen)
4612                 rc = lustre_lnet_show_hsensitivity(seq_no ? seq_no->cy_valueint
4613                                                         : -1,
4614                                                      show_rc, err_rc);
4615
4616         return rc;
4617 }
4618
4619 static int handle_yaml_ping(struct cYAML *tree, struct cYAML **show_rc,
4620                             struct cYAML **err_rc)
4621 {
4622         struct cYAML *seq_no, *nid, *timeout;
4623
4624         seq_no = cYAML_get_object_item(tree, "seq_no");
4625         nid = cYAML_get_object_item(tree, "primary nid");
4626         timeout = cYAML_get_object_item(tree, "timeout");
4627
4628         return lustre_lnet_ping_nid((nid) ? nid->cy_valuestring : NULL,
4629                                     (timeout) ? timeout->cy_valueint : 1000,
4630                                     (seq_no) ? seq_no->cy_valueint : -1,
4631                                     show_rc, err_rc);
4632 }
4633
4634 static int handle_yaml_discover(struct cYAML *tree, struct cYAML **show_rc,
4635                                 struct cYAML **err_rc)
4636 {
4637         struct cYAML *seq_no, *nid, *force;
4638
4639         seq_no = cYAML_get_object_item(tree, "seq_no");
4640         nid = cYAML_get_object_item(tree, "primary nid");
4641         force = cYAML_get_object_item(tree, "force");
4642
4643         return lustre_lnet_discover_nid((nid) ? nid->cy_valuestring : NULL,
4644                                         (force) ? force->cy_valueint : 0,
4645                                         (seq_no) ? seq_no->cy_valueint : -1,
4646                                         show_rc, err_rc);
4647 }
4648
4649 static int handle_yaml_no_op()
4650 {
4651         return LUSTRE_CFG_RC_NO_ERR;
4652 }
4653
4654 struct lookup_cmd_hdlr_tbl {
4655         char *name;
4656         cmd_handler_t cb;
4657 };
4658
4659 static struct lookup_cmd_hdlr_tbl lookup_config_tbl[] = {
4660         { .name = "route",      .cb = handle_yaml_config_route },
4661         { .name = "net",        .cb = handle_yaml_config_ni },
4662         { .name = "ip2nets",    .cb = handle_yaml_config_ip2nets },
4663         { .name = "peer",       .cb = handle_yaml_config_peer },
4664         { .name = "routing",    .cb = handle_yaml_config_routing },
4665         { .name = "buffers",    .cb = handle_yaml_config_buffers },
4666         { .name = "statistics", .cb = handle_yaml_no_op },
4667         { .name = "global",     .cb = handle_yaml_config_global_settings},
4668         { .name = "numa",       .cb = handle_yaml_config_numa },
4669         { .name = "ping",       .cb = handle_yaml_no_op },
4670         { .name = "discover",   .cb = handle_yaml_no_op },
4671         { .name = NULL } };
4672
4673 static struct lookup_cmd_hdlr_tbl lookup_del_tbl[] = {
4674         { .name = "route",      .cb = handle_yaml_del_route },
4675         { .name = "net",        .cb = handle_yaml_del_ni },
4676         { .name = "ip2nets",    .cb = handle_yaml_no_op },
4677         { .name = "peer",       .cb = handle_yaml_del_peer },
4678         { .name = "routing",    .cb = handle_yaml_del_routing },
4679         { .name = "buffers",    .cb = handle_yaml_no_op },
4680         { .name = "statistics", .cb = handle_yaml_no_op },
4681         { .name = "global",     .cb = handle_yaml_del_global_settings},
4682         { .name = "numa",       .cb = handle_yaml_del_numa },
4683         { .name = "ping",       .cb = handle_yaml_no_op },
4684         { .name = "discover",   .cb = handle_yaml_no_op },
4685         { .name = NULL } };
4686
4687 static struct lookup_cmd_hdlr_tbl lookup_show_tbl[] = {
4688         { .name = "route",      .cb = handle_yaml_show_route },
4689         { .name = "net",        .cb = handle_yaml_show_net },
4690         { .name = "peer",       .cb = handle_yaml_show_peers },
4691         { .name = "ip2nets",    .cb = handle_yaml_no_op },
4692         { .name = "routing",    .cb = handle_yaml_show_routing },
4693         { .name = "buffers",    .cb = handle_yaml_show_routing },
4694         { .name = "statistics", .cb = handle_yaml_show_stats },
4695         { .name = "global",     .cb = handle_yaml_show_global_settings},
4696         { .name = "numa",       .cb = handle_yaml_show_numa },
4697         { .name = "ping",       .cb = handle_yaml_no_op },
4698         { .name = "discover",   .cb = handle_yaml_no_op },
4699         { .name = NULL } };
4700
4701 static struct lookup_cmd_hdlr_tbl lookup_exec_tbl[] = {
4702         { .name = "route",      .cb = handle_yaml_no_op },
4703         { .name = "net",        .cb = handle_yaml_no_op },
4704         { .name = "peer",       .cb = handle_yaml_no_op },
4705         { .name = "ip2nets",    .cb = handle_yaml_no_op },
4706         { .name = "routing",    .cb = handle_yaml_no_op },
4707         { .name = "buffers",    .cb = handle_yaml_no_op },
4708         { .name = "statistics", .cb = handle_yaml_no_op },
4709         { .name = "global",     .cb = handle_yaml_no_op },
4710         { .name = "numa",       .cb = handle_yaml_no_op },
4711         { .name = "ping",       .cb = handle_yaml_ping },
4712         { .name = "discover",   .cb = handle_yaml_discover },
4713         { .name = NULL } };
4714
4715 static cmd_handler_t lookup_fn(char *key,
4716                                struct lookup_cmd_hdlr_tbl *tbl)
4717 {
4718         int i;
4719         if (key == NULL)
4720                 return NULL;
4721
4722         for (i = 0; tbl[i].name != NULL; i++) {
4723                 if (strncmp(key, tbl[i].name, strlen(tbl[i].name)) == 0)
4724                         return tbl[i].cb;
4725         }
4726
4727         return NULL;
4728 }
4729
4730 static int lustre_yaml_cb_helper(char *f, struct lookup_cmd_hdlr_tbl *table,
4731                                  struct cYAML **show_rc, struct cYAML **err_rc)
4732 {
4733         struct cYAML *tree, *item = NULL, *head, *child;
4734         cmd_handler_t cb;
4735         char err_str[LNET_MAX_STR_LEN];
4736         int rc = LUSTRE_CFG_RC_NO_ERR, return_rc = LUSTRE_CFG_RC_NO_ERR;
4737
4738         tree = cYAML_build_tree(f, NULL, 0, err_rc, false);
4739         if (tree == NULL)
4740                 return LUSTRE_CFG_RC_BAD_PARAM;
4741
4742         child = tree->cy_child;
4743         while (child != NULL) {
4744                 cb = lookup_fn(child->cy_string, table);
4745                 if (cb == NULL) {
4746                         snprintf(err_str, sizeof(err_str),
4747                                 "\"call back for '%s' not found\"",
4748                                 child->cy_string);
4749                         cYAML_build_error(LUSTRE_CFG_RC_BAD_PARAM, -1,
4750                                         "yaml", "helper", err_str, err_rc);
4751                         goto out;
4752                 }
4753
4754                 if (cYAML_is_sequence(child)) {
4755                         while ((head = cYAML_get_next_seq_item(child, &item))
4756                                != NULL) {
4757                                 rc = cb(head, show_rc, err_rc);
4758                                 if (rc != LUSTRE_CFG_RC_NO_ERR)
4759                                         return_rc = rc;
4760                         }
4761                 } else {
4762                         rc = cb(child, show_rc, err_rc);
4763                         if (rc != LUSTRE_CFG_RC_NO_ERR)
4764                                 return_rc = rc;
4765                 }
4766                 item = NULL;
4767                 child = child->cy_next;
4768         }
4769
4770 out:
4771         cYAML_free_tree(tree);
4772
4773         return return_rc;
4774 }
4775
4776 int lustre_yaml_config(char *f, struct cYAML **err_rc)
4777 {
4778         return lustre_yaml_cb_helper(f, lookup_config_tbl,
4779                                      NULL, err_rc);
4780 }
4781
4782 int lustre_yaml_del(char *f, struct cYAML **err_rc)
4783 {
4784         return lustre_yaml_cb_helper(f, lookup_del_tbl,
4785                                      NULL, err_rc);
4786 }
4787
4788 int lustre_yaml_show(char *f, struct cYAML **show_rc, struct cYAML **err_rc)
4789 {
4790         return lustre_yaml_cb_helper(f, lookup_show_tbl,
4791                                      show_rc, err_rc);
4792 }
4793
4794 int lustre_yaml_exec(char *f, struct cYAML **show_rc, struct cYAML **err_rc)
4795 {
4796         return lustre_yaml_cb_helper(f, lookup_exec_tbl,
4797                                      show_rc, err_rc);
4798 }