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 <rdma/rdma_user_cm.h>
  54 #include "liblnetconfig.h"
  55 #include <glob.h>
  56 #include <libcfs/util/param.h>
  57
  58 #ifndef HAVE_USRSPC_RDMA_PS_TCP
  59 #define RDMA_PS_TCP 0x0106
  60 #endif
  61
  62 const char *gmsg_stat_names[] = {"sent_stats", "received_stats",
  63                                  "dropped_stats"};
  64
  65 /*
  66  * lustre_lnet_ip_range_descr
  67  *      Describes an IP range.
  68  *      Each octect is an expression
  69  */
  70 struct lustre_lnet_ip_range_descr {
  71         struct list_head ipr_entry;
  72         struct list_head ipr_expr;
  73 };
  74
  75 /*
  76  * lustre_lnet_ip2nets
  77  *      Describes an ip2nets rule. This can be on a list of rules.
  78  */
  79 struct lustre_lnet_ip2nets {
  80         struct lnet_dlc_network_descr ip2nets_net;
  81         struct list_head ip2nets_ip_ranges;
  82 };
  83
  84 int open_sysfs_file(const char *path, const char *attr, const int mode)
  85 {
  86         int fd;
  87         char filename[LNET_MAX_STR_LEN];
  88
  89         if (strlen(path) + strlen(attr) >= LNET_MAX_STR_LEN)
  90                 return -1;
  91
  92         snprintf(filename, sizeof(filename), "%s%s",
  93                  path, attr);
  94
  95         fd = open(filename, mode);
  96
  97         return fd;
  98 }
  99
 100 static int read_sysfs_file(const char *path, const char *attr,
 101                            void *val, const size_t size, const int nelem)
 102 {
 103         int fd;
 104         int rc = LUSTRE_CFG_RC_GENERIC_ERR;
 105
 106         fd = open_sysfs_file(path, attr, O_RDONLY);
 107         if (fd == -1)
 108                 return LUSTRE_CFG_RC_NO_MATCH;
 109
 110         if (read(fd, val, size * nelem) == -1)
 111                 goto close_fd;
 112
 113         rc = LUSTRE_CFG_RC_NO_ERR;
 114
 115 close_fd:
 116         close(fd);
 117         return rc;
 118 }
 119
 120 static int write_sysfs_file(const char *path, const char *attr,
 121                             void *val, const size_t size, const int nelem)
 122 {
 123         int fd;
 124         int rc = LUSTRE_CFG_RC_GENERIC_ERR;
 125
 126         fd = open_sysfs_file(path, attr, O_WRONLY | O_TRUNC);
 127         if (fd == -1)
 128                 return LUSTRE_CFG_RC_NO_MATCH;
 129
 130         if (write(fd, val, size * nelem) == -1)
 131                 goto close_fd;
 132
 133         rc = LUSTRE_CFG_RC_NO_ERR;
 134
 135 close_fd:
 136         close(fd);
 137         return rc;
 138 }
 139
 140 /*
 141  * free_intf_descr
 142  *      frees the memory allocated for an intf descriptor.
 143  */
 144 void free_intf_descr(struct lnet_dlc_intf_descr *intf_descr)
 145 {
 146         if (!intf_descr)
 147                 return;
 148
 149         if (intf_descr->cpt_expr != NULL)
 150                 cfs_expr_list_free(intf_descr->cpt_expr);
 151         free(intf_descr);
 152 }
 153
 154 /*
 155  * lustre_lnet_add_ip_range
 156  * Formatting:
 157  *      given a string of the format:
 158  *      <expr.expr.expr.expr> parse each expr into
 159  *      a lustre_lnet_ip_range_descr structure and insert on the list.
 160  *
 161  *      This function is called from
 162  *              YAML on each ip-range.
 163  *              As a result of lnetctl command
 164  *              When building a NID or P2P selection rules
 165  */
 166 int lustre_lnet_add_ip_range(struct list_head *list, char *str_ip_range)
 167 {
 168         struct lustre_lnet_ip_range_descr *ip_range;
 169         int rc;
 170
 171         ip_range = calloc(1, sizeof(*ip_range));
 172         if (ip_range == NULL)
 173                 return LUSTRE_CFG_RC_OUT_OF_MEM;
 174
 175         INIT_LIST_HEAD(&ip_range->ipr_entry);
 176         INIT_LIST_HEAD(&ip_range->ipr_expr);
 177
 178         rc = cfs_ip_addr_parse(str_ip_range, strlen(str_ip_range),
 179                                &ip_range->ipr_expr);
 180         if (rc != 0)
 181                 return LUSTRE_CFG_RC_BAD_PARAM;
 182
 183         list_add_tail(&ip_range->ipr_entry, list);
 184
 185         return LUSTRE_CFG_RC_NO_ERR;
 186 }
 187
 188 int lustre_lnet_add_intf_descr(struct list_head *list, char *intf, int len)
 189 {
 190         char *open_sq_bracket = NULL, *close_sq_bracket = NULL,
 191              *intf_name;
 192         struct lnet_dlc_intf_descr *intf_descr = NULL;
 193         int rc;
 194         char intf_string[LNET_MAX_STR_LEN];
 195
 196         if (len >= LNET_MAX_STR_LEN)
 197                 return LUSTRE_CFG_RC_BAD_PARAM;
 198
 199         strncpy(intf_string, intf, len);
 200         intf_string[len] = '\0';
 201
 202         intf_descr = calloc(1, sizeof(*intf_descr));
 203         if (intf_descr == NULL)
 204                 return LUSTRE_CFG_RC_OUT_OF_MEM;
 205
 206         INIT_LIST_HEAD(&intf_descr->intf_on_network);
 207
 208         intf_name = intf_string;
 209         open_sq_bracket = strchr(intf_string, '[');
 210         if (open_sq_bracket != NULL) {
 211                 close_sq_bracket = strchr(intf_string, ']');
 212                 if (close_sq_bracket == NULL) {
 213                         free(intf_descr);
 214                         return LUSTRE_CFG_RC_BAD_PARAM;
 215                 }
 216                 rc = cfs_expr_list_parse(open_sq_bracket,
 217                                          strlen(open_sq_bracket), 0, UINT_MAX,
 218                                          &intf_descr->cpt_expr);
 219                 if (rc < 0) {
 220                         free(intf_descr);
 221                         return LUSTRE_CFG_RC_BAD_PARAM;
 222                 }
 223                 strncpy(intf_descr->intf_name, intf_name,
 224                         open_sq_bracket - intf_name);
 225                 intf_descr->intf_name[open_sq_bracket - intf_name] = '\0';
 226         } else {
 227                 strcpy(intf_descr->intf_name, intf_name);
 228                 intf_descr->cpt_expr = NULL;
 229         }
 230
 231         list_add_tail(&intf_descr->intf_on_network, list);
 232
 233         return LUSTRE_CFG_RC_NO_ERR;
 234 }
 235
 236 void lustre_lnet_init_nw_descr(struct lnet_dlc_network_descr *nw_descr)
 237 {
 238         if (nw_descr != NULL) {
 239                 nw_descr->nw_id = 0;
 240                 INIT_LIST_HEAD(&nw_descr->network_on_rule);
 241                 INIT_LIST_HEAD(&nw_descr->nw_intflist);
 242         }
 243 }
 244
 245 int lustre_lnet_parse_nidstr(char *nidstr, lnet_nid_t *lnet_nidlist,
 246                              int max_nids, char *err_str)
 247 {
 248         int rc, num_nids = 0;
 249         struct list_head nidlist;
 250
 251         if (!nidstr) {
 252                 snprintf(err_str, LNET_MAX_STR_LEN, "supplied nidstr is NULL");
 253                 return LUSTRE_CFG_RC_BAD_PARAM;
 254         }
 255
 256         if (strchr(nidstr, '*')) {
 257                 snprintf(err_str, LNET_MAX_STR_LEN,
 258                          "asterisk not allowed in nidstring \"%s\"", nidstr);
 259                 return LUSTRE_CFG_RC_BAD_PARAM;
 260         }
 261
 262         INIT_LIST_HEAD(&nidlist);
 263         rc = cfs_parse_nidlist(nidstr, strlen(nidstr), &nidlist);
 264         if (rc == 0) {
 265                 snprintf(err_str, LNET_MAX_STR_LEN,
 266                          "Unable to parse nidlist from: %s\n", nidstr);
 267                 return LUSTRE_CFG_RC_BAD_PARAM;
 268         }
 269
 270         if (list_empty(&nidlist)) {
 271                 snprintf(err_str, LNET_MAX_STR_LEN,
 272                          "\"%s\" does not specify any valid nid lists", nidstr);
 273                 return LUSTRE_CFG_RC_BAD_PARAM;
 274         }
 275
 276         num_nids = cfs_expand_nidlist(&nidlist, lnet_nidlist, max_nids);
 277         cfs_free_nidlist(&nidlist);
 278
 279         if (num_nids == -1) {
 280                 snprintf(err_str, LNET_MAX_STR_LEN,
 281                          "\"%s\" specifies more than the %d NIDs allowed by this operation.",
 282                          nidstr, max_nids);
 283                 return LUSTRE_CFG_RC_BAD_PARAM;
 284         }
 285
 286         if (num_nids < 0) {
 287                 snprintf(err_str, LNET_MAX_STR_LEN,
 288                          "Failed to expand nidstr: %s", strerror(num_nids));
 289                 return LUSTRE_CFG_RC_OUT_OF_MEM;
 290         }
 291
 292         if (num_nids == 0) {
 293                 snprintf(err_str, LNET_MAX_STR_LEN,
 294                          "\"%s\" did not expand to any nids", nidstr);
 295                 return LUSTRE_CFG_RC_BAD_PARAM;
 296         }
 297
 298         return num_nids;
 299 }
 300
 301 /*
 302  * format expected:
 303  *      <intf>[<expr>], <intf>[<expr>],..
 304  */
 305 int lustre_lnet_parse_interfaces(char *intf_str,
 306                                  struct lnet_dlc_network_descr *nw_descr)
 307 {
 308         char *open_square;
 309         char *close_square;
 310         char *comma;
 311         char *cur = intf_str, *next = NULL;
 312         char *end = intf_str + strlen(intf_str);
 313         int rc, len;
 314         struct lnet_dlc_intf_descr *intf_descr, *tmp;
 315
 316         if (nw_descr == NULL)
 317                 return LUSTRE_CFG_RC_BAD_PARAM;
 318
 319         while (cur < end) {
 320                 open_square = strchr(cur, '[');
 321                 if (open_square != NULL) {
 322                         close_square = strchr(cur, ']');
 323                         if (close_square == NULL) {
 324                                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 325                                 goto failed;
 326                         }
 327
 328                         comma = strchr(cur, ',');
 329                         if (comma != NULL && comma > close_square) {
 330                                 next = comma + 1;
 331                                 len = next - close_square;
 332                         } else {
 333                                 len = strlen(cur);
 334                                 next = cur + len;
 335                         }
 336                 } else {
 337                         comma = strchr(cur, ',');
 338                         if (comma != NULL) {
 339                                 next = comma + 1;
 340                                 len = comma - cur;
 341                         } else {
 342                                 len = strlen(cur);
 343                                 next = cur + len;
 344                         }
 345                 }
 346
 347                 rc = lustre_lnet_add_intf_descr(&nw_descr->nw_intflist, cur, len);
 348                 if (rc != LUSTRE_CFG_RC_NO_ERR)
 349                         goto failed;
 350
 351                 cur = next;
 352         }
 353
 354         return LUSTRE_CFG_RC_NO_ERR;
 355
 356 failed:
 357         list_for_each_entry_safe(intf_descr, tmp, &nw_descr->nw_intflist,
 358                                  intf_on_network) {
 359                 list_del(&intf_descr->intf_on_network);
 360                 free_intf_descr(intf_descr);
 361         }
 362
 363         return rc;
 364 }
 365
 366 int lustre_lnet_config_lib_init(void)
 367 {
 368         return register_ioc_dev(LNET_DEV_ID, LNET_DEV_PATH);
 369 }
 370
 371 void lustre_lnet_config_lib_uninit(void)
 372 {
 373         unregister_ioc_dev(LNET_DEV_ID);
 374 }
 375
 376 int lustre_lnet_config_ni_system(bool up, bool load_ni_from_mod,
 377                                  int seq_no, struct cYAML **err_rc)
 378 {
 379         struct libcfs_ioctl_data data;
 380         unsigned int opc;
 381         int rc;
 382         char err_str[LNET_MAX_STR_LEN] = "\"Success\"";
 383
 384         LIBCFS_IOC_INIT(data);
 385
 386         /* Reverse logic is used here in order not to change
 387          * the lctl utility */
 388         data.ioc_flags = load_ni_from_mod ? 0 : 1;
 389
 390         opc = up ? IOC_LIBCFS_CONFIGURE : IOC_LIBCFS_UNCONFIGURE;
 391
 392         rc = l_ioctl(LNET_DEV_ID, opc, &data);
 393         if (rc != 0) {
 394                 snprintf(err_str,
 395                         sizeof(err_str),
 396                         "\"LNet %s error: %s\"", (up) ? "configure" :
 397                         "unconfigure", strerror(errno));
 398                 rc = -errno;
 399         }
 400
 401         cYAML_build_error(rc, seq_no, (up) ? CONFIG_CMD : UNCONFIG_CMD,
 402                           "lnet", err_str, err_rc);
 403
 404         return rc;
 405 }
 406
 407 static int dispatch_peer_ni_cmd(__u32 cmd, struct lnet_ioctl_peer_cfg *data,
 408                                 char *err_str, char *cmd_str)
 409 {
 410         int rc;
 411
 412         rc = l_ioctl(LNET_DEV_ID, cmd, data);
 413         if (rc) {
 414                 rc = -errno;
 415                 snprintf(err_str, LNET_MAX_STR_LEN,
 416                          "\"%s peer ni operation failed: %s\"",
 417                          cmd_str, strerror(errno));
 418         }
 419
 420         return rc;
 421 }
 422
 423 static int infra_ping_nid(char *ping_nids, char *oper, int param, int ioc_call,
 424                           int seq_no, struct cYAML **show_rc,
 425                           struct cYAML **err_rc)
 426 {
 427         void *data = NULL;
 428         struct lnet_ioctl_ping_data ping;
 429         struct cYAML *root = NULL, *ping_node = NULL, *item = NULL,
 430                      *first_seq = NULL, *tmp = NULL, *peer_ni = NULL;
 431         struct lnet_process_id id;
 432         char err_str[LNET_MAX_STR_LEN] = {0};
 433         char *sep, *token, *end;
 434         char buf[6];
 435         size_t len;
 436         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
 437         int i;
 438         bool flag = false;
 439
 440         len = (sizeof(struct lnet_process_id) * LNET_INTERFACES_MAX_DEFAULT);
 441
 442         data = calloc(1, len);
 443         if (data == NULL)
 444                 goto out;
 445
 446         /* create struct cYAML root object */
 447         root = cYAML_create_object(NULL, NULL);
 448         if (root == NULL)
 449                 goto out;
 450
 451         ping_node = cYAML_create_seq(root, oper);
 452         if (ping_node == NULL)
 453                 goto out;
 454
 455         /* tokenise each nid in string ping_nids */
 456         token = strtok(ping_nids, ",");
 457
 458         do {
 459                 item = cYAML_create_seq_item(ping_node);
 460                 if (item == NULL)
 461                         goto out;
 462
 463                 if (first_seq == NULL)
 464                         first_seq = item;
 465
 466                 /* check if '-' is a part of NID, token */
 467                 sep = strchr(token, '-');
 468                 if (sep == NULL) {
 469                         id.pid = LNET_PID_ANY;
 470                         /* if no net is specified, libcfs_str2nid() will assume tcp */
 471                         id.nid = libcfs_str2nid(token);
 472                         if (id.nid == LNET_NID_ANY) {
 473                                 snprintf(err_str, sizeof(err_str),
 474                                          "\"cannot parse NID '%s'\"",
 475                                          token);
 476                                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 477                                 cYAML_build_error(rc, seq_no, MANAGE_CMD,
 478                                                   oper, err_str, err_rc);
 479                                 continue;
 480                         }
 481                 } else {
 482                         if (token[0] == 'u' || token[0] == 'U')
 483                                 id.pid = (strtoul(&token[1], &end, 0) |
 484                                           (LNET_PID_USERFLAG));
 485                         else
 486                                 id.pid = strtoul(token, &end, 0);
 487
 488                         /* assuming '-' is part of hostname */
 489                         if (end != sep) {
 490                                 id.pid = LNET_PID_ANY;
 491                                 id.nid = libcfs_str2nid(token);
 492                                 if (id.nid == LNET_NID_ANY) {
 493                                         snprintf(err_str, sizeof(err_str),
 494                                                  "\"cannot parse NID '%s'\"",
 495                                                  token);
 496                                         rc = LUSTRE_CFG_RC_BAD_PARAM;
 497                                         cYAML_build_error(rc, seq_no, MANAGE_CMD,
 498                                                           oper, err_str,
 499                                                           err_rc);
 500                                         continue;
 501                                 }
 502                         } else {
 503                                 id.nid = libcfs_str2nid(sep + 1);
 504                                 if (id.nid == LNET_NID_ANY) {
 505                                         snprintf(err_str, sizeof(err_str),
 506                                                  "\"cannot parse NID '%s'\"",
 507                                                  token);
 508                                         rc = LUSTRE_CFG_RC_BAD_PARAM;
 509                                         cYAML_build_error(rc, seq_no, MANAGE_CMD,
 510                                                           oper, err_str,
 511                                                           err_rc);
 512                                         continue;
 513                                 }
 514                         }
 515                 }
 516                 LIBCFS_IOC_INIT_V2(ping, ping_hdr);
 517                 ping.ping_hdr.ioc_len = sizeof(ping);
 518                 ping.ping_id          = id;
 519                 ping.op_param         = param;
 520                 ping.ping_count       = LNET_INTERFACES_MAX_DEFAULT;
 521                 ping.ping_buf         = data;
 522
 523                 rc = l_ioctl(LNET_DEV_ID, ioc_call, &ping);
 524                 if (rc != 0) {
 525                         snprintf(err_str,
 526                                  sizeof(err_str), "failed to %s %s: %s\n", oper,
 527                                  id.pid == LNET_PID_ANY ?
 528                                  libcfs_nid2str(id.nid) :
 529                                  libcfs_id2str(id), strerror(errno));
 530                         rc = LUSTRE_CFG_RC_BAD_PARAM;
 531                         cYAML_build_error(rc, seq_no, MANAGE_CMD,
 532                                           oper, err_str, err_rc);
 533                         continue;
 534                 }
 535
 536                 if (cYAML_create_string(item, "primary nid",
 537                                         libcfs_nid2str(ping.ping_id.nid)) == NULL)
 538                         goto out;
 539
 540                 if (cYAML_create_string(item, "Multi-Rail", ping.mr_info ?
 541                                         "True" : "False") == NULL)
 542                         goto out;
 543
 544                 tmp = cYAML_create_seq(item, "peer ni");
 545                 if (tmp == NULL)
 546                         goto out;
 547
 548                 for (i = 0; i < ping.ping_count; i++) {
 549                         if (ping.ping_buf[i].nid == LNET_NID_LO_0)
 550                                 continue;
 551                         peer_ni = cYAML_create_seq_item(tmp);
 552                         if (peer_ni == NULL)
 553                                 goto out;
 554                         memset(buf, 0, sizeof buf);
 555                         snprintf(buf, sizeof buf, "nid");
 556                         if (cYAML_create_string(peer_ni, buf,
 557                                                 libcfs_nid2str(ping.ping_buf[i].nid)) == NULL)
 558                                 goto out;
 559                 }
 560
 561                 flag = true;
 562
 563         } while ((token = strtok(NULL, ",")) != NULL);
 564
 565         if (flag)
 566                 rc = LUSTRE_CFG_RC_NO_ERR;
 567
 568 out:
 569         if (data)
 570                 free(data);
 571         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR) {
 572                 cYAML_free_tree(root);
 573         } else if (show_rc != NULL && *show_rc != NULL) {
 574                 struct cYAML *show_node;
 575                 show_node = cYAML_get_object_item(*show_rc, oper);
 576                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
 577                         cYAML_insert_child(show_node, first_seq);
 578                         free(ping_node);
 579                         free(root);
 580                 } else if (show_node == NULL) {
 581                         cYAML_insert_sibling((*show_rc)->cy_child,
 582                                              ping_node);
 583                         free(root);
 584                 } else {
 585                         cYAML_free_tree(root);
 586                 }
 587         } else {
 588                 *show_rc = root;
 589         }
 590
 591         return rc;
 592 }
 593
 594 int lustre_lnet_ping_nid(char *ping_nids, int timeout, int seq_no,
 595                          struct cYAML **show_rc, struct cYAML **err_rc)
 596 {
 597         int rc;
 598
 599         rc = infra_ping_nid(ping_nids, "ping", timeout, IOC_LIBCFS_PING_PEER,
 600                             seq_no, show_rc, err_rc);
 601         return rc;
 602 }
 603
 604 int lustre_lnet_discover_nid(char *ping_nids, int force, int seq_no,
 605                          struct cYAML **show_rc, struct cYAML **err_rc)
 606 {
 607         int rc;
 608
 609         rc = infra_ping_nid(ping_nids, "discover", force, IOC_LIBCFS_DISCOVER,
 610                             seq_no, show_rc, err_rc);
 611         return rc;
 612 }
 613
 614 static int lustre_lnet_handle_peer_nidlist(lnet_nid_t *nidlist, int num_nids,
 615                                            bool is_mr, __u32 cmd,
 616                                            char *cmd_type, char *err_str)
 617 {
 618         struct lnet_ioctl_peer_cfg data;
 619         int rc, nid_idx;
 620
 621         if (cmd == IOC_LIBCFS_ADD_PEER_NI) {
 622                 /* When adding a peer we first need to create the peer using the
 623                  * specified (or implied) primary nid. Then we can add
 624                  * additional nids to this peer using the primary nid as a key
 625                  */
 626                 LIBCFS_IOC_INIT_V2(data, prcfg_hdr);
 627                 data.prcfg_mr = is_mr;
 628                 data.prcfg_prim_nid = nidlist[0];
 629                 data.prcfg_cfg_nid = LNET_NID_ANY;
 630
 631                 rc = dispatch_peer_ni_cmd(cmd, &data, err_str, cmd_type);
 632
 633                 if (rc)
 634                         return rc;
 635         }
 636
 637         /* Add or delete any specified NIs associated with the specified
 638          * (or implied) primary nid
 639          */
 640         for (nid_idx = 1; nid_idx < num_nids; nid_idx++) {
 641                 LIBCFS_IOC_INIT_V2(data, prcfg_hdr);
 642                 data.prcfg_mr = is_mr;
 643                 data.prcfg_prim_nid = nidlist[0];
 644                 data.prcfg_cfg_nid = nidlist[nid_idx];
 645
 646                 rc = dispatch_peer_ni_cmd(cmd, &data, err_str, cmd_type);
 647
 648                 if (rc)
 649                         return rc;
 650         }
 651
 652         if (cmd == IOC_LIBCFS_DEL_PEER_NI && num_nids == 1) {
 653                 /* In the delete case we may have been given just the
 654                  * primary nid of the peer. This tells us to delete the peer
 655                  * completely (rather than just delete some of its NIs)
 656                  */
 657                 LIBCFS_IOC_INIT_V2(data, prcfg_hdr);
 658                 data.prcfg_prim_nid = nidlist[0];
 659                 data.prcfg_cfg_nid = LNET_NID_ANY;
 660
 661                 rc = dispatch_peer_ni_cmd(cmd, &data, err_str, cmd_type);
 662         }
 663
 664         return rc;
 665 }
 666
 667 static int
 668 lustre_lnet_mod_peer_nidlist(lnet_nid_t pnid, lnet_nid_t *lnet_nidlist,
 669                              int cmd, int num_nids, bool is_mr, int seq_no,
 670                              struct cYAML **err_rc)
 671 {
 672         int rc = LUSTRE_CFG_RC_NO_ERR;
 673         char err_str[LNET_MAX_STR_LEN];
 674         lnet_nid_t *lnet_nidlist2 = NULL;
 675         int ioc_cmd = (cmd == LNETCTL_ADD_CMD) ? IOC_LIBCFS_ADD_PEER_NI :
 676                 IOC_LIBCFS_DEL_PEER_NI;
 677         char *cmd_str = (cmd == LNETCTL_ADD_CMD) ? ADD_CMD : DEL_CMD;
 678
 679         num_nids++;
 680         lnet_nidlist2 = calloc(sizeof(*lnet_nidlist2), num_nids);
 681         if (!lnet_nidlist2) {
 682                 snprintf(err_str, LNET_MAX_STR_LEN, "out of memory");
 683                 rc = LUSTRE_CFG_RC_OUT_OF_MEM;
 684                 goto out;
 685         }
 686         lnet_nidlist2[0] = pnid;
 687         memcpy(&lnet_nidlist2[1], lnet_nidlist, sizeof(*lnet_nidlist) *
 688                                                 (num_nids - 1));
 689
 690         rc = lustre_lnet_handle_peer_nidlist(lnet_nidlist2,
 691                                              num_nids, is_mr, ioc_cmd,
 692                                              cmd_str, err_str);
 693 out:
 694         if (lnet_nidlist2)
 695                 free(lnet_nidlist2);
 696
 697         cYAML_build_error(rc, seq_no, cmd_str, "peer_ni", err_str, err_rc);
 698         return rc;
 699 }
 700
 701 static void
 702 replace_sep(char *str, char sep, char newsep)
 703 {
 704         int bracket = 0;
 705         int i;
 706         if (!str)
 707                 return;
 708         for (i = 0; i < strlen(str); i++) {
 709                 /* don't replace ',' within [] */
 710                 if (str[i] == '[')
 711                         bracket++;
 712                 else if (str[i] == ']')
 713                         bracket--;
 714                 else if (str[i] == sep && bracket == 0)
 715                         str[i] = newsep;
 716         }
 717 }
 718
 719 int lustre_lnet_modify_peer(char *prim_nid, char *nids, bool is_mr,
 720                             int cmd, int seq_no, struct cYAML **err_rc)
 721 {
 722         int num_nids, rc;
 723         char err_str[LNET_MAX_STR_LEN] = "Error";
 724         lnet_nid_t lnet_nidlist[LNET_MAX_NIDS_PER_PEER];
 725         lnet_nid_t pnid = LNET_NID_ANY;
 726
 727         if (!prim_nid) {
 728                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 729                 snprintf(err_str, LNET_MAX_STR_LEN,
 730                          "--prim_nid must be specified");
 731                 goto out;
 732         }
 733
 734         pnid = libcfs_str2nid(prim_nid);
 735         if (pnid == LNET_NID_ANY) {
 736                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 737                 snprintf(err_str, LNET_MAX_STR_LEN,
 738                         "badly formatted primary NID: %s", prim_nid);
 739                 goto out;
 740         }
 741
 742         num_nids = 0;
 743         if (nids) {
 744                 /*
 745                 * if there is no primary nid we need to make the first nid in the
 746                 * nids list the primary nid
 747                 */
 748                 replace_sep(nids, ',', ' ');
 749                 rc = lustre_lnet_parse_nidstr(nids, lnet_nidlist,
 750                                         LNET_MAX_NIDS_PER_PEER, err_str);
 751                 if (rc < 0)
 752                         goto out;
 753
 754                 num_nids = rc;
 755         }
 756
 757         rc = lustre_lnet_mod_peer_nidlist(pnid, lnet_nidlist,
 758                                           cmd, num_nids, is_mr,
 759                                           -1, err_rc);
 760
 761 out:
 762         if (rc != LUSTRE_CFG_RC_NO_ERR)
 763                 cYAML_build_error(rc, -1, "peer",
 764                                 cmd == LNETCTL_ADD_CMD ? "add" : "del",
 765                                 err_str, err_rc);
 766
 767         return rc;
 768 }
 769
 770 int lustre_lnet_route_common(char *nw, char *nidstr, int hops, int prio,
 771                              int sen, int seq_no, struct cYAML **err_rc,
 772                              int cmd)
 773 {
 774         int rc, num_nids, idx;
 775         __u32 rnet;
 776         char err_str[LNET_MAX_STR_LEN] = "\"generic error\"";
 777         struct lnet_ioctl_config_data data;
 778         lnet_nid_t lnet_nidlist[LNET_MAX_NIDS_PER_PEER];
 779
 780         if (nw == NULL || nidstr == NULL) {
 781                 snprintf(err_str, LNET_MAX_STR_LEN,
 782                          "\"missing mandatory parameter:'%s'\"",
 783                          (nw == NULL && nidstr == NULL) ? "network, gateway" :
 784                          (nw == NULL) ? "network" : "gateway");
 785                 rc = LUSTRE_CFG_RC_MISSING_PARAM;
 786                 goto out;
 787         }
 788
 789         rnet = libcfs_str2net(nw);
 790         if (rnet == LNET_NET_ANY) {
 791                 snprintf(err_str, LNET_MAX_STR_LEN,
 792                          "\"cannot parse remote net %s\"", nw);
 793                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 794                 goto out;
 795         }
 796
 797         replace_sep(nidstr, ',', ' ');
 798         rc = lustre_lnet_parse_nidstr(nidstr, lnet_nidlist,
 799                                       LNET_MAX_NIDS_PER_PEER, err_str);
 800         if (rc < 0)
 801                 goto out;
 802
 803         num_nids = rc;
 804
 805         for (idx = 0; idx < num_nids; idx++) {
 806                 LIBCFS_IOC_INIT_V2(data, cfg_hdr);
 807                 data.cfg_net = rnet;
 808                 if (cmd == LNETCTL_ADD_CMD) {
 809                         data.cfg_config_u.cfg_route.rtr_hop = hops;
 810                         data.cfg_config_u.cfg_route.rtr_priority = prio;
 811                         data.cfg_config_u.cfg_route.rtr_sensitivity = sen;
 812                 }
 813
 814                 data.cfg_nid = lnet_nidlist[idx];
 815
 816                 if (cmd == LNETCTL_ADD_CMD)
 817                         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_ADD_ROUTE,
 818                                         &data);
 819                 else
 820                         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_DEL_ROUTE,
 821                                         &data);
 822
 823                 if (rc != 0 && errno != EEXIST &&
 824                         errno != EHOSTUNREACH) {
 825                         rc = -errno;
 826                         snprintf(err_str, LNET_MAX_STR_LEN,
 827                                         "route operation failed: %s",
 828                                         strerror(errno));
 829                         goto out;
 830                 } else if (errno == EEXIST) {
 831                         /*
 832                          * continue chugging along if one of the
 833                          * routes already exists
 834                          */
 835                         rc = 0;
 836                 }
 837         }
 838
 839 out:
 840         cYAML_build_error(rc, seq_no,
 841                           cmd == LNETCTL_ADD_CMD ? ADD_CMD : DEL_CMD, "route",
 842                           err_str, err_rc);
 843
 844         return rc;
 845 }
 846
 847 int lustre_lnet_config_route(char *nw, char *nidstr, int hops, int prio,
 848                              int sen, int seq_no, struct cYAML **err_rc)
 849 {
 850         int rc;
 851         char err_str[LNET_MAX_STR_LEN] = "\"generic error\"";
 852
 853         if (hops == -1) {
 854                 hops = LNET_UNDEFINED_HOPS;
 855         } else if (hops < 1 || hops > 255) {
 856                 snprintf(err_str, LNET_MAX_STR_LEN,
 857                          "\"invalid hop count %d, must be between 1 and 255\"",
 858                          hops);
 859                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
 860                 goto out;
 861         }
 862
 863         if (prio == -1) {
 864                 prio = 0;
 865         } else if (prio < 0) {
 866                 snprintf(err_str, LNET_MAX_STR_LEN,
 867                          "\"invalid priority %d, must be greater than 0\"",
 868                          prio);
 869                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
 870                 goto out;
 871         }
 872
 873         if (sen == -1) {
 874                 sen = 1;
 875         } else if (sen < 1) {
 876                 snprintf(err_str, LNET_MAX_STR_LEN,
 877                          "\"invalid health sensitivity %d, must be 1 or greater\"",
 878                          sen);
 879                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
 880                 goto out;
 881         }
 882
 883         rc = lustre_lnet_route_common(nw, nidstr, hops, prio, sen, seq_no,
 884                                       err_rc, LNETCTL_ADD_CMD);
 885         return rc;
 886 out:
 887         cYAML_build_error(rc, seq_no, ADD_CMD, "route", err_str, err_rc);
 888
 889         return rc;
 890 }
 891
 892 int lustre_lnet_del_route(char *nw, char *nidstr, int seq_no,
 893                           struct cYAML **err_rc)
 894 {
 895         return lustre_lnet_route_common(nw, nidstr, 0, 0, 0, seq_no, err_rc,
 896                                         LNETCTL_DEL_CMD);
 897 }
 898
 899 int lustre_lnet_show_route(char *nw, char *gw, int hops, int prio, int detail,
 900                            int seq_no, struct cYAML **show_rc,
 901                            struct cYAML **err_rc, bool backup)
 902 {
 903         struct lnet_ioctl_config_data data;
 904         lnet_nid_t gateway_nid;
 905         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
 906         int l_errno = 0;
 907         __u32 net = LNET_NET_ANY;
 908         int i;
 909         struct cYAML *root = NULL, *route = NULL, *item = NULL;
 910         struct cYAML *first_seq = NULL;
 911         char err_str[LNET_MAX_STR_LEN] = "\"out of memory\"";
 912         bool exist = false;
 913
 914         if (nw != NULL) {
 915                 net = libcfs_str2net(nw);
 916                 if (net == LNET_NET_ANY) {
 917                         snprintf(err_str,
 918                                  sizeof(err_str),
 919                                  "\"cannot parse net '%s'\"", nw);
 920                         rc = LUSTRE_CFG_RC_BAD_PARAM;
 921                         goto out;
 922                 }
 923
 924         } else {
 925                 /* show all routes without filtering on net */
 926                 net = LNET_NET_ANY;
 927         }
 928
 929         if (gw != NULL) {
 930                 gateway_nid = libcfs_str2nid(gw);
 931                 if (gateway_nid == LNET_NID_ANY) {
 932                         snprintf(err_str,
 933                                  sizeof(err_str),
 934                                  "\"cannot parse gateway NID '%s'\"", gw);
 935                         rc = LUSTRE_CFG_RC_BAD_PARAM;
 936                         goto out;
 937                 }
 938         } else
 939                 /* show all routes with out filtering on gateway */
 940                 gateway_nid = LNET_NID_ANY;
 941
 942         if ((hops < 1 && hops != -1) || hops > 255) {
 943                 snprintf(err_str,
 944                          sizeof(err_str),
 945                          "\"invalid hop count %d, must be between 0 and 256\"",
 946                          hops);
 947                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
 948                 goto out;
 949         }
 950
 951         /* create struct cYAML root object */
 952         root = cYAML_create_object(NULL, NULL);
 953         if (root == NULL)
 954                 goto out;
 955
 956         route = cYAML_create_seq(root, "route");
 957         if (route == NULL)
 958                 goto out;
 959
 960         for (i = 0;; i++) {
 961                 __u32 rt_alive;
 962                 __u32 rt_multi_hop;
 963
 964                 LIBCFS_IOC_INIT_V2(data, cfg_hdr);
 965                 data.cfg_count = i;
 966
 967                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_ROUTE, &data);
 968                 if (rc != 0) {
 969                         l_errno = errno;
 970                         break;
 971                 }
 972
 973                 /* filter on provided data */
 974                 if (net != LNET_NET_ANY &&
 975                     net != data.cfg_net)
 976                         continue;
 977
 978                 if (gateway_nid != LNET_NID_ANY &&
 979                     gateway_nid != data.cfg_nid)
 980                         continue;
 981
 982                 if (hops != -1 &&
 983                     hops != data.cfg_config_u.cfg_route.rtr_hop)
 984                         continue;
 985
 986                 if (prio != -1 &&
 987                     prio != data.cfg_config_u.cfg_route.rtr_priority)
 988                         continue;
 989
 990                 /* default rc to -1 incase we hit the goto */
 991                 rc = -1;
 992                 exist = true;
 993
 994                 item = cYAML_create_seq_item(route);
 995                 if (item == NULL)
 996                         goto out;
 997
 998                 if (first_seq == NULL)
 999                         first_seq = item;
1000
1001                 if (cYAML_create_string(item, "net",
1002                                         libcfs_net2str(data.cfg_net)) == NULL)
1003                         goto out;
1004
1005                 if (cYAML_create_string(item, "gateway",
1006                                         libcfs_nid2str(data.cfg_nid)) == NULL)
1007                         goto out;
1008
1009                 if (detail) {
1010                         if (cYAML_create_number(item, "hop",
1011                                                 (int) data.cfg_config_u.
1012                                                 cfg_route.rtr_hop) ==
1013                             NULL)
1014                                 goto out;
1015
1016                         if (cYAML_create_number(item, "priority",
1017                                                 data.cfg_config_u.
1018                                                 cfg_route.rtr_priority) == NULL)
1019                                 goto out;
1020
1021                         if (cYAML_create_number(item, "health_sensitivity",
1022                                                 data.cfg_config_u.
1023                                                 cfg_route.rtr_sensitivity) == NULL)
1024                                 goto out;
1025
1026                         rt_alive = data.cfg_config_u.cfg_route.rtr_flags &
1027                                         LNET_RT_ALIVE;
1028                         rt_multi_hop = data.cfg_config_u.cfg_route.rtr_flags &
1029                                         LNET_RT_MULTI_HOP;
1030
1031                         if (!backup &&
1032                             cYAML_create_string(item, "state",
1033                                                 rt_alive ?
1034                                                 "up" : "down") == NULL)
1035                                 goto out;
1036
1037                         if (!backup &&
1038                             cYAML_create_string(item, "type",
1039                                                 rt_multi_hop?
1040                                                 "multi-hop" : "single-hop") == NULL)
1041                                 goto out;
1042                 }
1043         }
1044
1045         /* print output iff show_rc is not provided */
1046         if (show_rc == NULL)
1047                 cYAML_print_tree(root);
1048
1049         if (l_errno != ENOENT) {
1050                 snprintf(err_str,
1051                          sizeof(err_str),
1052                          "\"cannot get routes: %s\"",
1053                          strerror(l_errno));
1054                 rc = -l_errno;
1055                 goto out;
1056         } else
1057                 rc = LUSTRE_CFG_RC_NO_ERR;
1058
1059         snprintf(err_str, sizeof(err_str), "\"success\"");
1060 out:
1061         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR || !exist) {
1062                 cYAML_free_tree(root);
1063         } else if (show_rc != NULL && *show_rc != NULL) {
1064                 struct cYAML *show_node;
1065                 /* find the route node, if one doesn't exist then
1066                  * insert one.  Otherwise add to the one there
1067                  */
1068                 show_node = cYAML_get_object_item(*show_rc, "route");
1069                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
1070                         cYAML_insert_child(show_node, first_seq);
1071                         free(route);
1072                         free(root);
1073                 } else if (show_node == NULL) {
1074                         cYAML_insert_sibling((*show_rc)->cy_child,
1075                                                 route);
1076                         free(root);
1077                 } else {
1078                         cYAML_free_tree(root);
1079                 }
1080         } else {
1081                 *show_rc = root;
1082         }
1083
1084         cYAML_build_error(rc, seq_no, SHOW_CMD, "route", err_str, err_rc);
1085
1086         return rc;
1087 }
1088
1089 static int socket_intf_query(int request, char *intf,
1090                              struct ifreq *ifr)
1091 {
1092         int rc = 0;
1093         int sockfd;
1094
1095         if (strlen(intf) >= IFNAMSIZ || ifr == NULL)
1096                 return LUSTRE_CFG_RC_BAD_PARAM;
1097
1098         sockfd = socket(AF_INET, SOCK_DGRAM, 0);
1099         if (sockfd < 0)
1100                 return LUSTRE_CFG_RC_BAD_PARAM;
1101
1102         strcpy(ifr->ifr_name, intf);
1103         rc = ioctl(sockfd, request, ifr);
1104         if (rc != 0)
1105                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1106
1107         close(sockfd);
1108
1109         return rc;
1110 }
1111
1112 static int lustre_lnet_queryip(struct lnet_dlc_intf_descr *intf, __u32 *ip)
1113 {
1114         struct ifreq ifr;
1115         int rc;
1116
1117         memset(&ifr, 0, sizeof(ifr));
1118         rc = socket_intf_query(SIOCGIFFLAGS, intf->intf_name, &ifr);
1119         if (rc != 0)
1120                 return LUSTRE_CFG_RC_BAD_PARAM;
1121
1122         if ((ifr.ifr_flags & IFF_UP) == 0)
1123                 return LUSTRE_CFG_RC_BAD_PARAM;
1124
1125         memset(&ifr, 0, sizeof(ifr));
1126         rc = socket_intf_query(SIOCGIFADDR, intf->intf_name, &ifr);
1127         if (rc != 0)
1128                 return LUSTRE_CFG_RC_BAD_PARAM;
1129
1130         *ip = ((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr.s_addr;
1131         *ip = bswap_32(*ip);
1132
1133         return LUSTRE_CFG_RC_NO_ERR;
1134 }
1135
1136 /*
1137  * for each interface in the array of interfaces find the IP address of
1138  * that interface, create its nid and add it to an array of NIDs.
1139  * Stop if any of the interfaces is down
1140  */
1141 static int lustre_lnet_intf2nids(struct lnet_dlc_network_descr *nw,
1142                                  lnet_nid_t **nids, __u32 *nnids,
1143                                  char *err_str, size_t str_len)
1144 {
1145         int i = 0, count = 0, rc;
1146         struct lnet_dlc_intf_descr *intf;
1147         char val[LNET_MAX_STR_LEN];
1148         __u32 ip;
1149         int gni_num;
1150         char *endp;
1151         unsigned int num;
1152
1153
1154         if (nw == NULL || nids == NULL) {
1155                 snprintf(err_str, str_len,
1156                          "\"unexpected parameters to lustre_lnet_intf2nids()\"");
1157                 return LUSTRE_CFG_RC_BAD_PARAM;
1158         }
1159
1160         if (LNET_NETTYP(nw->nw_id) == GNILND) {
1161                 count = 1;
1162         } else {
1163                 list_for_each_entry(intf, &nw->nw_intflist, intf_on_network)
1164                         count++;
1165         }
1166
1167         *nids = calloc(count, sizeof(lnet_nid_t));
1168         if (*nids == NULL) {
1169                 snprintf(err_str, str_len,
1170                          "\"out of memory\"");
1171                 return LUSTRE_CFG_RC_OUT_OF_MEM;
1172         }
1173         /*
1174          * special case the GNI interface since it doesn't have an IP
1175          * address. The assumption is that there can only be one GNI
1176          * interface in the system. No interface name is provided.
1177          */
1178         if (LNET_NETTYP(nw->nw_id) == GNILND) {
1179                 rc = read_sysfs_file(gni_nid_path, "nid", val,
1180                                 1, sizeof(val));
1181                 if (rc) {
1182                         snprintf(err_str, str_len,
1183                                  "\"cannot read gni nid\"");
1184                         goto failed;
1185                 }
1186                 gni_num = atoi(val);
1187
1188                 (*nids)[i] = LNET_MKNID(nw->nw_id, gni_num);
1189
1190                 goto out;
1191         }
1192
1193         /* look at the other interfaces */
1194         list_for_each_entry(intf, &nw->nw_intflist, intf_on_network) {
1195                 if (LNET_NETTYP(nw->nw_id) == PTL4LND) {
1196                         /* handle LNDs with numeric interface name */
1197                         num = strtoul(intf->intf_name, &endp, 0);
1198                         if (endp == intf->intf_name || *endp != '\0') {
1199                                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1200                                 snprintf(err_str, str_len,
1201                                          "\"couldn't query intf %s\"",
1202                                          intf->intf_name);
1203                                 goto failed;
1204                         }
1205                         (*nids)[i] = LNET_MKNID(nw->nw_id, num);
1206                         i++;
1207                 } else {
1208                         /* handle LNDs with ip interface name */
1209                         rc = lustre_lnet_queryip(intf, &ip);
1210                         if (rc != LUSTRE_CFG_RC_NO_ERR) {
1211                                 snprintf(err_str, str_len,
1212                                          "\"couldn't query intf %s\"",
1213                                          intf->intf_name);
1214                                 goto failed;
1215                         }
1216                         (*nids)[i] = LNET_MKNID(nw->nw_id, ip);
1217                         i++;
1218                 }
1219         }
1220
1221 out:
1222         *nnids = count;
1223
1224         return 0;
1225
1226 failed:
1227         free(*nids);
1228         *nids = NULL;
1229         return rc;
1230 }
1231
1232 /*
1233  * called repeatedly until a match or no more ip range
1234  * What do you have?
1235  *      ip_range expression
1236  *      interface list with all the interface names.
1237  *      all the interfaces in the system.
1238  *
1239  *      try to match the ip_range expr to one of the interfaces' IPs in
1240  *      the system. If we hit a patch for an interface. Check if that
1241  *      interface name is in the list.
1242  *
1243  *      If there are more than one interface in the list, then make sure
1244  *      that the IPs for all of these interfaces match the ip ranges
1245  *      given.
1246  *
1247  *      for each interface in intf_list
1248  *              look up the intf name in ifa
1249  *              if not there then no match
1250  *              check ip obtained from ifa against a match to any of the
1251  *              ip_ranges given.
1252  *              If no match, then fail
1253  *
1254  *      The result is that all the interfaces have to match.
1255  */
1256 int lustre_lnet_match_ip_to_intf(struct ifaddrs *ifa,
1257                                  struct list_head *intf_list,
1258                                  struct list_head *ip_ranges)
1259 {
1260         int rc;
1261         __u32 ip;
1262         struct lnet_dlc_intf_descr *intf_descr, *tmp;
1263         struct ifaddrs *ifaddr = ifa;
1264         struct lustre_lnet_ip_range_descr *ip_range;
1265         int family;
1266
1267         /*
1268          * if there are no explicit interfaces, and no ip ranges, then
1269          * configure the first tcp interface we encounter.
1270          */
1271         if (list_empty(intf_list) && list_empty(ip_ranges)) {
1272                 for (ifaddr = ifa; ifaddr != NULL; ifaddr = ifaddr->ifa_next) {
1273                         if (ifaddr->ifa_addr == NULL)
1274                                 continue;
1275
1276                         if ((ifaddr->ifa_flags & IFF_UP) == 0)
1277                                 continue;
1278
1279                         family = ifaddr->ifa_addr->sa_family;
1280                         if (family == AF_INET &&
1281                             strcmp(ifaddr->ifa_name, "lo") != 0) {
1282                                 rc = lustre_lnet_add_intf_descr
1283                                         (intf_list, ifaddr->ifa_name,
1284                                         strlen(ifaddr->ifa_name));
1285
1286                                 if (rc != LUSTRE_CFG_RC_NO_ERR)
1287                                         return rc;
1288
1289                                 return LUSTRE_CFG_RC_MATCH;
1290                         }
1291                 }
1292                 return LUSTRE_CFG_RC_NO_MATCH;
1293         }
1294
1295         /*
1296          * First interface which matches an IP pattern will be used
1297          */
1298         if (list_empty(intf_list)) {
1299                 /*
1300                  * no interfaces provided in the rule, but an ip range is
1301                  * provided, so try and match an interface to the ip
1302                  * range.
1303                  */
1304                 for (ifaddr = ifa; ifaddr != NULL; ifaddr = ifaddr->ifa_next) {
1305                         if (ifaddr->ifa_addr == NULL)
1306                                 continue;
1307
1308                         if ((ifaddr->ifa_flags & IFF_UP) == 0)
1309                                 continue;
1310
1311                         family = ifaddr->ifa_addr->sa_family;
1312                         if (family == AF_INET) {
1313                                 ip = ((struct sockaddr_in *)ifaddr->ifa_addr)->
1314                                         sin_addr.s_addr;
1315
1316                                 list_for_each_entry(ip_range, ip_ranges,
1317                                                     ipr_entry) {
1318                                         rc = cfs_ip_addr_match(bswap_32(ip),
1319                                                         &ip_range->ipr_expr);
1320                                         if (!rc)
1321                                                 continue;
1322
1323                                         rc = lustre_lnet_add_intf_descr
1324                                           (intf_list, ifaddr->ifa_name,
1325                                            strlen(ifaddr->ifa_name));
1326
1327                                         if (rc != LUSTRE_CFG_RC_NO_ERR)
1328                                                 return rc;
1329                                 }
1330                         }
1331                 }
1332
1333                 if (!list_empty(intf_list))
1334                         return LUSTRE_CFG_RC_MATCH;
1335
1336                 return LUSTRE_CFG_RC_NO_MATCH;
1337         }
1338
1339         /*
1340          * If an interface is explicitly specified the ip-range might or
1341          * might not be specified. if specified the interface needs to match the
1342          * ip-range. If no ip-range then the interfaces are
1343          * automatically matched if they are all up.
1344          * If > 1 interfaces all the interfaces must match for the NI to
1345          * be configured.
1346          */
1347         list_for_each_entry_safe(intf_descr, tmp, intf_list, intf_on_network) {
1348                 for (ifaddr = ifa; ifaddr != NULL; ifaddr = ifaddr->ifa_next) {
1349                         if (ifaddr->ifa_addr == NULL)
1350                                 continue;
1351
1352                         family = ifaddr->ifa_addr->sa_family;
1353                         if (family == AF_INET &&
1354                             strcmp(intf_descr->intf_name,
1355                                    ifaddr->ifa_name) == 0)
1356                                 break;
1357                 }
1358
1359                 if (ifaddr == NULL) {
1360                         list_del(&intf_descr->intf_on_network);
1361                         free_intf_descr(intf_descr);
1362                         continue;
1363                 }
1364
1365                 if ((ifaddr->ifa_flags & IFF_UP) == 0) {
1366                         list_del(&intf_descr->intf_on_network);
1367                         free_intf_descr(intf_descr);
1368                         continue;
1369                 }
1370
1371                 ip = ((struct sockaddr_in *)ifaddr->ifa_addr)->sin_addr.s_addr;
1372
1373                 rc = 1;
1374                 list_for_each_entry(ip_range, ip_ranges, ipr_entry) {
1375                         rc = cfs_ip_addr_match(bswap_32(ip), &ip_range->ipr_expr);
1376                         if (rc)
1377                                 break;
1378                 }
1379
1380                 if (!rc) {
1381                         /* no match for this interface */
1382                         list_del(&intf_descr->intf_on_network);
1383                         free_intf_descr(intf_descr);
1384                 }
1385         }
1386
1387         return LUSTRE_CFG_RC_MATCH;
1388 }
1389
1390 static int lustre_lnet_resolve_ip2nets_rule(struct lustre_lnet_ip2nets *ip2nets,
1391                                             lnet_nid_t **nids, __u32 *nnids,
1392                                             char *err_str, size_t str_len)
1393 {
1394         struct ifaddrs *ifa;
1395         int rc = LUSTRE_CFG_RC_NO_ERR;
1396
1397         rc = getifaddrs(&ifa);
1398         if (rc < 0) {
1399                 snprintf(err_str, str_len,
1400                          "\"failed to get interface addresses: %d\"", -errno);
1401                 return -errno;
1402         }
1403
1404         rc = lustre_lnet_match_ip_to_intf(ifa,
1405                                           &ip2nets->ip2nets_net.nw_intflist,
1406                                           &ip2nets->ip2nets_ip_ranges);
1407         if (rc != LUSTRE_CFG_RC_MATCH) {
1408                 snprintf(err_str, str_len,
1409                          "\"couldn't match ip to existing interfaces\"");
1410                 freeifaddrs(ifa);
1411                 return rc;
1412         }
1413
1414         rc = lustre_lnet_intf2nids(&ip2nets->ip2nets_net, nids, nnids,
1415                                    err_str, str_len);
1416         if (rc != LUSTRE_CFG_RC_NO_ERR) {
1417                 *nids = NULL;
1418                 *nnids = 0;
1419         }
1420
1421         freeifaddrs(ifa);
1422
1423         return rc;
1424 }
1425
1426 static int
1427 lustre_lnet_ioctl_config_ni(struct list_head *intf_list,
1428                             struct lnet_ioctl_config_lnd_tunables *tunables,
1429                             struct cfs_expr_list *global_cpts,
1430                             lnet_nid_t *nids, char *err_str)
1431 {
1432         char *data;
1433         struct lnet_ioctl_config_ni *conf;
1434         struct lnet_ioctl_config_lnd_tunables *tun = NULL;
1435         int rc = LUSTRE_CFG_RC_NO_ERR, i = 0;
1436         size_t len;
1437         int count;
1438         struct lnet_dlc_intf_descr *intf_descr;
1439         __u32 *cpt_array;
1440         struct cfs_expr_list *cpt_expr;
1441
1442         list_for_each_entry(intf_descr, intf_list,
1443                             intf_on_network) {
1444                 if (tunables != NULL)
1445                         len = sizeof(struct lnet_ioctl_config_ni) +
1446                               sizeof(struct lnet_ioctl_config_lnd_tunables);
1447                 else
1448                         len = sizeof(struct lnet_ioctl_config_ni);
1449
1450                 data = calloc(1, len);
1451                 if (!data)
1452                         return LUSTRE_CFG_RC_OUT_OF_MEM;
1453                 conf = (struct lnet_ioctl_config_ni*) data;
1454                 if (tunables != NULL)
1455                         tun = (struct lnet_ioctl_config_lnd_tunables*)
1456                                 conf->lic_bulk;
1457
1458                 LIBCFS_IOC_INIT_V2(*conf, lic_cfg_hdr);
1459                 conf->lic_cfg_hdr.ioc_len = len;
1460                 conf->lic_nid = nids[i];
1461                 strncpy(conf->lic_ni_intf, intf_descr->intf_name,
1462                         LNET_MAX_STR_LEN);
1463
1464                 if (intf_descr->cpt_expr != NULL)
1465                         cpt_expr = intf_descr->cpt_expr;
1466                 else if (global_cpts != NULL)
1467                         cpt_expr = global_cpts;
1468                 else
1469                         cpt_expr = NULL;
1470
1471                 if (cpt_expr != NULL) {
1472                         count = cfs_expr_list_values(cpt_expr,
1473                                                      LNET_MAX_SHOW_NUM_CPT,
1474                                                      &cpt_array);
1475                         if (count > 0) {
1476                                 memcpy(conf->lic_cpts, cpt_array,
1477                                        sizeof(cpt_array[0]) * LNET_MAX_STR_LEN);
1478                                 free(cpt_array);
1479                         } else {
1480                                 count = 0;
1481                         }
1482                 } else {
1483                         count = 0;
1484                 }
1485
1486                 conf->lic_ncpts = count;
1487
1488                 if (tunables != NULL)
1489                         memcpy(tun, tunables, sizeof(*tunables));
1490
1491                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_ADD_LOCAL_NI, data);
1492                 if (rc < 0) {
1493                         rc = -errno;
1494                         snprintf(err_str,
1495                                  LNET_MAX_STR_LEN,
1496                                  "\"cannot add network: %s\"", strerror(errno));
1497                         free(data);
1498                         return rc;
1499                 }
1500                 free(data);
1501                 i++;
1502         }
1503
1504         return LUSTRE_CFG_RC_NO_ERR;
1505 }
1506
1507 int
1508 lustre_lnet_config_ip2nets(struct lustre_lnet_ip2nets *ip2nets,
1509                            struct lnet_ioctl_config_lnd_tunables *tunables,
1510                            struct cfs_expr_list *global_cpts,
1511                            int seq_no, struct cYAML **err_rc)
1512 {
1513         lnet_nid_t *nids = NULL;
1514         __u32 nnids = 0;
1515         int rc;
1516         char err_str[LNET_MAX_STR_LEN] = "\"success\"";
1517
1518         if (!ip2nets) {
1519                 snprintf(err_str,
1520                          sizeof(err_str),
1521                          "\"incomplete ip2nets information\"");
1522                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1523                 goto out;
1524         }
1525
1526         /*
1527          * call below function to resolve the rules into a list of nids.
1528          * The memory is allocated in that function then freed here when
1529          * it's no longer needed.
1530          */
1531         rc = lustre_lnet_resolve_ip2nets_rule(ip2nets, &nids, &nnids, err_str,
1532                                               sizeof(err_str));
1533         if (rc != LUSTRE_CFG_RC_NO_ERR && rc != LUSTRE_CFG_RC_MATCH)
1534                 goto out;
1535
1536         if (list_empty(&ip2nets->ip2nets_net.nw_intflist)) {
1537                 snprintf(err_str, sizeof(err_str),
1538                          "\"no interfaces match ip2nets rules\"");
1539                 goto free_nids_out;
1540         }
1541
1542         rc = lustre_lnet_ioctl_config_ni(&ip2nets->ip2nets_net.nw_intflist,
1543                                          tunables, global_cpts, nids,
1544                                          err_str);
1545
1546 free_nids_out:
1547         free(nids);
1548
1549 out:
1550         cYAML_build_error(rc, seq_no, ADD_CMD, "ip2nets", err_str, err_rc);
1551         return rc;
1552 }
1553
1554 int lustre_lnet_config_ni(struct lnet_dlc_network_descr *nw_descr,
1555                           struct cfs_expr_list *global_cpts,
1556                           char *ip2net,
1557                           struct lnet_ioctl_config_lnd_tunables *tunables,
1558                           int seq_no, struct cYAML **err_rc)
1559 {
1560         char *data = NULL;
1561         struct lnet_ioctl_config_ni *conf;
1562         struct lnet_ioctl_config_lnd_tunables *tun = NULL;
1563         char buf[LNET_MAX_STR_LEN];
1564         int rc = LUSTRE_CFG_RC_NO_ERR;
1565         char err_str[LNET_MAX_STR_LEN] = "\"success\"";
1566         lnet_nid_t *nids = NULL;
1567         __u32 nnids = 0;
1568         size_t len;
1569         int count;
1570         struct lnet_dlc_intf_descr *intf_descr, *tmp;
1571         __u32 *cpt_array;
1572
1573         if (ip2net == NULL && (nw_descr == NULL || nw_descr->nw_id == 0 ||
1574             (list_empty(&nw_descr->nw_intflist) &&
1575              LNET_NETTYP(nw_descr->nw_id) != GNILND))) {
1576                 snprintf(err_str,
1577                          sizeof(err_str),
1578                          "\"missing mandatory parameters in NI config: '%s'\"",
1579                          (nw_descr == NULL) ? "network , interface" :
1580                          (nw_descr->nw_id == 0) ? "network" : "interface");
1581                 rc = LUSTRE_CFG_RC_MISSING_PARAM;
1582                 goto out;
1583         }
1584
1585         if (ip2net != NULL && strlen(ip2net) >= sizeof(buf)) {
1586                 snprintf(err_str,
1587                          sizeof(err_str),
1588                          "\"ip2net string too long %d\"",
1589                                 (int)strlen(ip2net));
1590                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
1591                 goto out;
1592         }
1593
1594         if (ip2net != NULL) {
1595                 if (tunables != NULL)
1596                         len = sizeof(struct lnet_ioctl_config_ni) +
1597                               sizeof(struct lnet_ioctl_config_lnd_tunables);
1598                 else
1599                         len = sizeof(struct lnet_ioctl_config_ni);
1600                 data = calloc(1, len);
1601                 if (!data) {
1602                         rc = LUSTRE_CFG_RC_OUT_OF_MEM;
1603                         goto out;
1604                 }
1605                 conf = (struct lnet_ioctl_config_ni*) data;
1606                 if (tunables != NULL)
1607                         tun = (struct lnet_ioctl_config_lnd_tunables*)
1608                                 (data + sizeof(*conf));
1609
1610                 LIBCFS_IOC_INIT_V2(*conf, lic_cfg_hdr);
1611                 conf->lic_cfg_hdr.ioc_len = len;
1612                 strncpy(conf->lic_legacy_ip2nets, ip2net,
1613                         LNET_MAX_STR_LEN);
1614
1615                 if (global_cpts != NULL) {
1616                         count = cfs_expr_list_values(global_cpts,
1617                                                      LNET_MAX_SHOW_NUM_CPT,
1618                                                      &cpt_array);
1619                         if (count > 0) {
1620                                 memcpy(conf->lic_cpts, cpt_array,
1621                                        sizeof(cpt_array[0]) * LNET_MAX_STR_LEN);
1622                                 free(cpt_array);
1623                         } else {
1624                                 count = 0;
1625                         }
1626                 } else {
1627                         count = 0;
1628                 }
1629
1630                 conf->lic_ncpts = count;
1631
1632                 if (tunables != NULL)
1633                         memcpy(tun, tunables, sizeof(*tunables));
1634
1635                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_ADD_LOCAL_NI, data);
1636                 if (rc < 0) {
1637                         rc = -errno;
1638                         snprintf(err_str,
1639                                 sizeof(err_str),
1640                                 "\"cannot add network: %s\"", strerror(errno));
1641                         goto out;
1642                 }
1643
1644                 goto out;
1645         }
1646
1647         if (LNET_NETTYP(nw_descr->nw_id) == LOLND) {
1648                 rc = LUSTRE_CFG_RC_NO_ERR;
1649                 goto out;
1650         }
1651
1652         if (nw_descr->nw_id == LNET_NET_ANY) {
1653                 snprintf(err_str,
1654                         sizeof(err_str),
1655                         "\"cannot parse net '%s'\"",
1656                         libcfs_net2str(nw_descr->nw_id));
1657                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1658                 goto out;
1659         }
1660
1661         /*
1662          * special case the GNI since no interface name is expected
1663          */
1664         if (list_empty(&nw_descr->nw_intflist) &&
1665             (LNET_NETTYP(nw_descr->nw_id) != GNILND)) {
1666                 snprintf(err_str,
1667                         sizeof(err_str),
1668                         "\"no interface name provided\"");
1669                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1670                 goto out;
1671         }
1672
1673         rc = lustre_lnet_intf2nids(nw_descr, &nids, &nnids,
1674                                    err_str, sizeof(err_str));
1675         if (rc != 0) {
1676                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1677                 goto out;
1678         }
1679
1680         rc = lustre_lnet_ioctl_config_ni(&nw_descr->nw_intflist,
1681                                          tunables, global_cpts, nids,
1682                                          err_str);
1683
1684 out:
1685         if (nw_descr != NULL) {
1686                 list_for_each_entry_safe(intf_descr, tmp,
1687                                          &nw_descr->nw_intflist,
1688                                          intf_on_network) {
1689                         list_del(&intf_descr->intf_on_network);
1690                         free_intf_descr(intf_descr);
1691                 }
1692         }
1693
1694         cYAML_build_error(rc, seq_no, ADD_CMD, "net", err_str, err_rc);
1695
1696         if (nids)
1697                 free(nids);
1698
1699         if (data)
1700                 free(data);
1701
1702         return rc;
1703 }
1704
1705 int lustre_lnet_del_ni(struct lnet_dlc_network_descr *nw_descr,
1706                        int seq_no, struct cYAML **err_rc)
1707 {
1708         struct lnet_ioctl_config_ni data;
1709         int rc = LUSTRE_CFG_RC_NO_ERR, i;
1710         char err_str[LNET_MAX_STR_LEN] = "\"success\"";
1711         lnet_nid_t *nids = NULL;
1712         __u32 nnids = 0;
1713         struct lnet_dlc_intf_descr *intf_descr, *tmp;
1714
1715         if (nw_descr == NULL || nw_descr->nw_id == 0) {
1716                 snprintf(err_str,
1717                          sizeof(err_str),
1718                          "\"missing mandatory parameter in deleting NI: '%s'\"",
1719                          (nw_descr == NULL) ? "network , interface" :
1720                          (nw_descr->nw_id == 0) ? "network" : "interface");
1721                 rc = LUSTRE_CFG_RC_MISSING_PARAM;
1722                 goto out;
1723         }
1724
1725         if (LNET_NETTYP(nw_descr->nw_id) == LOLND)
1726                 return LUSTRE_CFG_RC_NO_ERR;
1727
1728         if (nw_descr->nw_id == LNET_NET_ANY) {
1729                 snprintf(err_str,
1730                          sizeof(err_str),
1731                          "\"cannot parse net '%s'\"",
1732                          libcfs_net2str(nw_descr->nw_id));
1733                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1734                 goto out;
1735         }
1736
1737         rc = lustre_lnet_intf2nids(nw_descr, &nids, &nnids,
1738                                    err_str, sizeof(err_str));
1739         if (rc != 0) {
1740                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1741                 goto out;
1742         }
1743
1744         /*
1745          * no interfaces just the nw_id is specified
1746          */
1747         if (nnids == 0) {
1748                 nids = calloc(1, sizeof(*nids));
1749                 if (nids == NULL) {
1750                         snprintf(err_str, sizeof(err_str),
1751                                 "\"out of memory\"");
1752                         rc = LUSTRE_CFG_RC_OUT_OF_MEM;
1753                         goto out;
1754                 }
1755                 nids[0] = LNET_MKNID(nw_descr->nw_id, 0);
1756                 nnids = 1;
1757         }
1758
1759         for (i = 0; i < nnids; i++) {
1760                 LIBCFS_IOC_INIT_V2(data, lic_cfg_hdr);
1761                 data.lic_nid = nids[i];
1762
1763                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_DEL_LOCAL_NI, &data);
1764                 if (rc < 0) {
1765                         rc = -errno;
1766                         snprintf(err_str,
1767                                 sizeof(err_str),
1768                                 "\"cannot del network: %s\"", strerror(errno));
1769                 }
1770         }
1771
1772         list_for_each_entry_safe(intf_descr, tmp, &nw_descr->nw_intflist,
1773                                  intf_on_network) {
1774                 list_del(&intf_descr->intf_on_network);
1775                 free_intf_descr(intf_descr);
1776         }
1777
1778 out:
1779         cYAML_build_error(rc, seq_no, DEL_CMD, "net", err_str, err_rc);
1780
1781         if (nids != NULL)
1782                 free(nids);
1783
1784         return rc;
1785 }
1786
1787 static int
1788 lustre_lnet_config_healthv(int value, bool all, lnet_nid_t nid,
1789                            enum lnet_health_type type, char *name,
1790                            int seq_no, struct cYAML **err_rc)
1791 {
1792         struct lnet_ioctl_reset_health_cfg data;
1793         int rc = LUSTRE_CFG_RC_NO_ERR;
1794         char err_str[LNET_MAX_STR_LEN] = "\"success\"";
1795
1796         LIBCFS_IOC_INIT_V2(data, rh_hdr);
1797         data.rh_type = type;
1798         data.rh_all = all;
1799         data.rh_value = value;
1800         data.rh_nid = nid;
1801
1802         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_SET_HEALHV, &data);
1803         if (rc != 0) {
1804                 rc = -errno;
1805                 snprintf(err_str,
1806                          sizeof(err_str), "Can not configure health value: %s",
1807                          strerror(errno));
1808         }
1809
1810         cYAML_build_error(rc, seq_no, ADD_CMD, name, err_str, err_rc);
1811
1812         return rc;
1813 }
1814
1815 int lustre_lnet_config_ni_healthv(int value, bool all, char *ni_nid, int seq_no,
1816                                   struct cYAML **err_rc)
1817 {
1818         lnet_nid_t nid;
1819         if (ni_nid)
1820                 nid = libcfs_str2nid(ni_nid);
1821         else
1822                 nid = LNET_NID_ANY;
1823         return lustre_lnet_config_healthv(value, all, nid,
1824                                           LNET_HEALTH_TYPE_LOCAL_NI,
1825                                           "ni healthv", seq_no, err_rc);
1826 }
1827
1828 int lustre_lnet_config_peer_ni_healthv(int value, bool all, char *lpni_nid,
1829                                        int seq_no, struct cYAML **err_rc)
1830 {
1831         lnet_nid_t nid;
1832         if (lpni_nid)
1833                 nid = libcfs_str2nid(lpni_nid);
1834         else
1835                 nid = LNET_NID_ANY;
1836         return lustre_lnet_config_healthv(value, all, nid,
1837                                           LNET_HEALTH_TYPE_PEER_NI,
1838                                           "peer_ni healthv", seq_no, err_rc);
1839 }
1840
1841 static bool
1842 add_msg_stats_to_yaml_blk(struct cYAML *yaml,
1843                           struct lnet_ioctl_comm_count *counts)
1844 {
1845         if (cYAML_create_number(yaml, "put",
1846                                 counts->ico_put_count)
1847                                         == NULL)
1848                 return false;
1849         if (cYAML_create_number(yaml, "get",
1850                                 counts->ico_get_count)
1851                                         == NULL)
1852                 return false;
1853         if (cYAML_create_number(yaml, "reply",
1854                                 counts->ico_reply_count)
1855                                         == NULL)
1856                 return false;
1857         if (cYAML_create_number(yaml, "ack",
1858                                 counts->ico_ack_count)
1859                                         == NULL)
1860                 return false;
1861         if (cYAML_create_number(yaml, "hello",
1862                                 counts->ico_hello_count)
1863                                         == NULL)
1864                 return false;
1865
1866         return true;
1867 }
1868
1869 static struct lnet_ioctl_comm_count *
1870 get_counts(struct lnet_ioctl_element_msg_stats *msg_stats, int idx)
1871 {
1872         if (idx == 0)
1873                 return &msg_stats->im_send_stats;
1874         if (idx == 1)
1875                 return &msg_stats->im_recv_stats;
1876         if (idx == 2)
1877                 return &msg_stats->im_drop_stats;
1878
1879         return NULL;
1880 }
1881
1882 static int
1883 create_local_udsp_info(struct lnet_ioctl_construct_udsp_info *udsp_info,
1884                        struct cYAML *net_node)
1885 {
1886         char tmp[LNET_MAX_STR_LEN];
1887         struct cYAML *udsp_net;
1888         bool created = false;
1889         struct cYAML *pref;
1890         int i;
1891
1892         /* add the UDSP info */
1893         udsp_net = cYAML_create_object(net_node, "udsp info");
1894         if (!udsp_net)
1895                 return LUSTRE_CFG_RC_OUT_OF_MEM;
1896
1897         if (!cYAML_create_number(udsp_net, "net priority",
1898                                  (int) udsp_info->cud_net_priority))
1899                 return LUSTRE_CFG_RC_OUT_OF_MEM;
1900
1901         if (!cYAML_create_number(udsp_net, "nid priority",
1902                                  (int)udsp_info->cud_nid_priority))
1903                 return LUSTRE_CFG_RC_OUT_OF_MEM;
1904
1905         pref = udsp_net;
1906
1907         for (i = 0; i < LNET_MAX_SHOW_NUM_NID; i++) {
1908                 memset(tmp, 0, LNET_MAX_STR_LEN);
1909                 if (udsp_info->cud_pref_rtr_nid[i] == 0)
1910                         break;
1911                 if (!created) {
1912                         pref = cYAML_create_object(udsp_net,
1913                                         "Preferred gateway NIDs");
1914                         if (!pref)
1915                                 return LUSTRE_CFG_RC_OUT_OF_MEM;
1916                         created = true;
1917                 }
1918                 snprintf(tmp, sizeof(tmp), "NID-%d", i);
1919                 if (!cYAML_create_string(pref, tmp,
1920                         libcfs_nid2str(udsp_info->cud_pref_rtr_nid[i])))
1921                         return LUSTRE_CFG_RC_OUT_OF_MEM;
1922         }
1923
1924         return LUSTRE_CFG_RC_NO_ERR;
1925 }
1926
1927 static int
1928 create_remote_udsp_info(struct lnet_ioctl_construct_udsp_info *udsp_info,
1929                         struct cYAML *nid_node)
1930 {
1931         char tmp[LNET_MAX_STR_LEN];
1932         struct cYAML *udsp_nid;
1933         bool created = false;
1934         struct cYAML *pref;
1935         int i;
1936
1937         /* add the UDSP info */
1938         udsp_nid = cYAML_create_object(nid_node, "udsp info");
1939         if (!udsp_nid)
1940                 return LUSTRE_CFG_RC_OUT_OF_MEM;
1941
1942         if (!cYAML_create_number(udsp_nid, "net priority",
1943                                  (int) udsp_info->cud_net_priority))
1944                 return LUSTRE_CFG_RC_OUT_OF_MEM;
1945
1946         if (!cYAML_create_number(udsp_nid, "nid priority",
1947                                  (int) udsp_info->cud_nid_priority))
1948                 return LUSTRE_CFG_RC_OUT_OF_MEM;
1949
1950         pref = udsp_nid;
1951         for (i = 0; i < LNET_MAX_SHOW_NUM_NID; i++) {
1952                 memset(tmp, 0, LNET_MAX_STR_LEN);
1953                 if (udsp_info->cud_pref_rtr_nid[i] == 0)
1954                         break;
1955                 if (!created) {
1956                         pref = cYAML_create_object(udsp_nid,
1957                                         "Preferred gateway NIDs");
1958                         if (!pref)
1959                                 return LUSTRE_CFG_RC_OUT_OF_MEM;
1960                         created = true;
1961                 }
1962                 snprintf(tmp, sizeof(tmp), "NID-%d", i);
1963                 if (!cYAML_create_string(pref, tmp,
1964                         libcfs_nid2str(udsp_info->cud_pref_rtr_nid[i])))
1965                         return LUSTRE_CFG_RC_OUT_OF_MEM;
1966         }
1967
1968         pref = udsp_nid;
1969         created = false;
1970         for (i = 0; i < LNET_MAX_SHOW_NUM_NID; i++) {
1971                 memset(tmp, 0, LNET_MAX_STR_LEN);
1972                 if (udsp_info->cud_pref_nid[i] == 0)
1973                         break;
1974                 if (!created) {
1975                         pref = cYAML_create_object(udsp_nid,
1976                                         "Preferred source NIDs");
1977                         if (!pref)
1978                                 return LUSTRE_CFG_RC_OUT_OF_MEM;
1979                         created = true;
1980                 }
1981                 snprintf(tmp, sizeof(tmp), "NID-%d", i);
1982                 if (!cYAML_create_string(pref, tmp,
1983                         libcfs_nid2str(udsp_info->cud_pref_nid[i])))
1984                         return LUSTRE_CFG_RC_OUT_OF_MEM;
1985         }
1986
1987         return LUSTRE_CFG_RC_NO_ERR;
1988 }
1989
1990 int lustre_lnet_show_net(char *nw, int detail, int seq_no,
1991                          struct cYAML **show_rc, struct cYAML **err_rc,
1992                          bool backup)
1993 {
1994         char *buf;
1995         struct lnet_ioctl_config_ni *ni_data;
1996         struct lnet_ioctl_config_lnd_tunables *lnd;
1997         struct lnet_ioctl_element_stats *stats;
1998         struct lnet_ioctl_element_msg_stats msg_stats;
1999         struct lnet_ioctl_local_ni_hstats hstats;
2000         struct lnet_ioctl_construct_udsp_info udsp_info;
2001         __u32 net = LNET_NET_ANY;
2002         __u32 prev_net = LNET_NET_ANY;
2003         int rc = LUSTRE_CFG_RC_OUT_OF_MEM, i, j;
2004         int l_errno = 0;
2005         struct cYAML *root = NULL, *tunables = NULL,
2006                 *net_node = NULL, *interfaces = NULL,
2007                 *item = NULL, *first_seq = NULL,
2008                 *tmp = NULL, *statistics = NULL,
2009                 *yhstats = NULL;
2010         int str_buf_len = LNET_MAX_SHOW_NUM_CPT * 2;
2011         char str_buf[str_buf_len];
2012         char *pos;
2013         char err_str[LNET_MAX_STR_LEN] = "\"out of memory\"";
2014         bool exist = false, new_net = true;
2015         int net_num = 0;
2016         size_t buf_size = sizeof(*ni_data) + sizeof(*lnd) + sizeof(*stats);
2017
2018         buf = calloc(1, buf_size);
2019         if (buf == NULL)
2020                 goto out;
2021
2022         ni_data = (struct lnet_ioctl_config_ni *)buf;
2023
2024         if (nw != NULL) {
2025                 net = libcfs_str2net(nw);
2026                 if (net == LNET_NET_ANY) {
2027                         snprintf(err_str,
2028                                  sizeof(err_str),
2029                                  "\"cannot parse net '%s'\"", nw);
2030                         rc = LUSTRE_CFG_RC_BAD_PARAM;
2031                         goto out;
2032                 }
2033         }
2034
2035         root = cYAML_create_object(NULL, NULL);
2036         if (root == NULL)
2037                 goto out;
2038
2039         net_node = cYAML_create_seq(root, "net");
2040         if (net_node == NULL)
2041                 goto out;
2042
2043         for (i = 0;; i++) {
2044                 __u32 rc_net;
2045
2046                 memset(buf, 0, buf_size);
2047
2048                 LIBCFS_IOC_INIT_V2(*ni_data, lic_cfg_hdr);
2049                 /*
2050                  * set the ioc_len to the proper value since INIT assumes
2051                  * size of data
2052                  */
2053                 ni_data->lic_cfg_hdr.ioc_len = buf_size;
2054                 ni_data->lic_idx = i;
2055
2056                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_LOCAL_NI, ni_data);
2057                 if (rc != 0) {
2058                         l_errno = errno;
2059                         break;
2060                 }
2061
2062                 rc_net = LNET_NIDNET(ni_data->lic_nid);
2063
2064                 /* filter on provided data */
2065                 if (net != LNET_NET_ANY &&
2066                     net != rc_net)
2067                         continue;
2068
2069                 /* if we're backing up don't store lo */
2070                 if (backup && LNET_NETTYP(rc_net) == LOLND)
2071                         continue;
2072
2073                 /* default rc to -1 in case we hit the goto */
2074                 rc = -1;
2075                 exist = true;
2076
2077                 stats = (struct lnet_ioctl_element_stats *)ni_data->lic_bulk;
2078                 lnd = (struct lnet_ioctl_config_lnd_tunables *)
2079                         (ni_data->lic_bulk + sizeof(*stats));
2080
2081                 if (rc_net != prev_net) {
2082                         prev_net = rc_net;
2083                         new_net = true;
2084                         net_num++;
2085                 }
2086
2087                 if (new_net) {
2088                         if (!cYAML_create_string(net_node, "net type",
2089                                                  libcfs_net2str(rc_net)))
2090                                 goto out;
2091
2092                         tmp = cYAML_create_seq(net_node, "local NI(s)");
2093                         if (tmp == NULL)
2094                                 goto out;
2095                         new_net = false;
2096                 }
2097
2098                 /* create the tree to be printed. */
2099                 item = cYAML_create_seq_item(tmp);
2100                 if (item == NULL)
2101                         goto out;
2102
2103                 if (first_seq == NULL)
2104                         first_seq = item;
2105
2106                 if (!backup &&
2107                     cYAML_create_string(item, "nid",
2108                                         libcfs_nid2str(ni_data->lic_nid)) == NULL)
2109                         goto out;
2110
2111                 if (!backup &&
2112                     cYAML_create_string(item,
2113                                         "status",
2114                                         (ni_data->lic_status ==
2115                                           LNET_NI_STATUS_UP) ?
2116                                             "up" : "down") == NULL)
2117                         goto out;
2118
2119                 /* don't add interfaces unless there is at least one
2120                  * interface */
2121                 if (strlen(ni_data->lic_ni_intf) > 0) {
2122                         interfaces = cYAML_create_object(item, "interfaces");
2123                         if (interfaces == NULL)
2124                                 goto out;
2125
2126                         snprintf(str_buf, sizeof(str_buf), "%d", 0);
2127                         if (cYAML_create_string(interfaces, str_buf,
2128                                                 ni_data->lic_ni_intf) == NULL)
2129                                 goto out;
2130                 }
2131
2132                 if (detail) {
2133                         char *limit;
2134                         int k;
2135
2136                         if (backup)
2137                                 goto continue_without_msg_stats;
2138
2139                         statistics = cYAML_create_object(item, "statistics");
2140                         if (statistics == NULL)
2141                                 goto out;
2142
2143                         if (cYAML_create_number(statistics, "send_count",
2144                                                 stats->iel_send_count)
2145                                                         == NULL)
2146                                 goto out;
2147
2148                         if (cYAML_create_number(statistics, "recv_count",
2149                                                 stats->iel_recv_count)
2150                                                         == NULL)
2151                                 goto out;
2152
2153                         if (cYAML_create_number(statistics, "drop_count",
2154                                                 stats->iel_drop_count)
2155                                                         == NULL)
2156                                 goto out;
2157
2158                         if (detail < 4)
2159                                 goto continue_without_udsp_info;
2160
2161                         LIBCFS_IOC_INIT_V2(udsp_info, cud_hdr);
2162                         udsp_info.cud_nid = ni_data->lic_nid;
2163                         udsp_info.cud_peer = false;
2164                         rc = l_ioctl(LNET_DEV_ID,
2165                                      IOC_LIBCFS_GET_CONST_UDSP_INFO,
2166                                      &udsp_info);
2167                         if (rc != 0) {
2168                                 l_errno = errno;
2169                                 goto continue_without_udsp_info;
2170                         }
2171
2172                         rc = create_local_udsp_info(&udsp_info, item);
2173                         if (rc) {
2174                                 l_errno = errno;
2175                                 goto out;
2176                         }
2177
2178 continue_without_udsp_info:
2179                         if (detail < 2)
2180                                 goto continue_without_msg_stats;
2181
2182                         LIBCFS_IOC_INIT_V2(msg_stats, im_hdr);
2183                         msg_stats.im_hdr.ioc_len = sizeof(msg_stats);
2184                         msg_stats.im_idx = i;
2185
2186                         rc = l_ioctl(LNET_DEV_ID,
2187                                      IOC_LIBCFS_GET_LOCAL_NI_MSG_STATS,
2188                                      &msg_stats);
2189                         if (rc != 0) {
2190                                 l_errno = errno;
2191                                 goto continue_without_msg_stats;
2192                         }
2193
2194                         for (k = 0; k < 3; k++) {
2195                                 struct lnet_ioctl_comm_count *counts;
2196                                 struct cYAML *msg_statistics = NULL;
2197
2198                                 msg_statistics = cYAML_create_object(item,
2199                                                  (char *)gmsg_stat_names[k]);
2200                                 if (msg_statistics == NULL)
2201                                         goto out;
2202
2203                                 counts = get_counts(&msg_stats, k);
2204                                 if (counts == NULL)
2205                                         goto out;
2206
2207                                 if (!add_msg_stats_to_yaml_blk(msg_statistics,
2208                                                                counts))
2209                                         goto out;
2210                         }
2211
2212                         LIBCFS_IOC_INIT_V2(hstats, hlni_hdr);
2213                         hstats.hlni_nid = ni_data->lic_nid;
2214                         /* grab health stats */
2215                         rc = l_ioctl(LNET_DEV_ID,
2216                                      IOC_LIBCFS_GET_LOCAL_HSTATS,
2217                                      &hstats);
2218                         if (rc != 0) {
2219                                 l_errno = errno;
2220                                 goto continue_without_msg_stats;
2221                         }
2222                         yhstats = cYAML_create_object(item, "health stats");
2223                         if (!yhstats)
2224                                 goto out;
2225                         if (cYAML_create_number(yhstats, "health value",
2226                                                 hstats.hlni_health_value)
2227                                                         == NULL)
2228                                 goto out;
2229                         if (cYAML_create_number(yhstats, "interrupts",
2230                                                 hstats.hlni_local_interrupt)
2231                                                         == NULL)
2232                                 goto out;
2233                         if (cYAML_create_number(yhstats, "dropped",
2234                                                 hstats.hlni_local_dropped)
2235                                                         == NULL)
2236                                 goto out;
2237                         if (cYAML_create_number(yhstats, "aborted",
2238                                                 hstats.hlni_local_aborted)
2239                                                         == NULL)
2240                                 goto out;
2241                         if (cYAML_create_number(yhstats, "no route",
2242                                                 hstats.hlni_local_no_route)
2243                                                         == NULL)
2244                                 goto out;
2245                         if (cYAML_create_number(yhstats, "timeouts",
2246                                                 hstats.hlni_local_timeout)
2247                                                         == NULL)
2248                                 goto out;
2249                         if (cYAML_create_number(yhstats, "error",
2250                                                 hstats.hlni_local_error)
2251                                                         == NULL)
2252                                 goto out;
2253                         if (cYAML_create_number(yhstats, "ping_count",
2254                                                 hstats.hlni_ping_count)
2255                                                         == NULL)
2256                                 goto out;
2257                         if (cYAML_create_number(yhstats, "next_ping",
2258                                                 hstats.hlni_next_ping)
2259                                                         == NULL)
2260                                 goto out;
2261
2262 continue_without_msg_stats:
2263                         tunables = cYAML_create_object(item, "tunables");
2264                         if (!tunables)
2265                                 goto out;
2266
2267                         rc = lustre_net_show_tunables(tunables, &lnd->lt_cmn);
2268                         if (rc != LUSTRE_CFG_RC_NO_ERR)
2269                                 goto out;
2270
2271                         rc = lustre_ni_show_tunables(tunables, LNET_NETTYP(rc_net),
2272                                                      &lnd->lt_tun);
2273                         if (rc != LUSTRE_CFG_RC_NO_ERR &&
2274                             rc != LUSTRE_CFG_RC_NO_MATCH)
2275                                 goto out;
2276
2277                         if (rc != LUSTRE_CFG_RC_NO_MATCH) {
2278                                 tunables = cYAML_create_object(item,
2279                                                                "lnd tunables");
2280                                 if (tunables == NULL)
2281                                         goto out;
2282                         }
2283
2284                         if (!backup &&
2285                             cYAML_create_number(item, "dev cpt",
2286                                                 ni_data->lic_dev_cpt) == NULL)
2287                                 goto out;
2288
2289                         /* out put the CPTs in the format: "[x,x,x,...]" */
2290                         pos = str_buf;
2291                         limit = str_buf + str_buf_len - 3;
2292                         pos += scnprintf(pos, limit - pos, "\"[");
2293                         for (j = 0 ; ni_data->lic_ncpts >= 1 &&
2294                                 j < ni_data->lic_ncpts &&
2295                                 pos < limit; j++) {
2296                                 pos += scnprintf(pos, limit - pos,
2297                                                  "%d", ni_data->lic_cpts[j]);
2298                                 if ((j + 1) < ni_data->lic_ncpts)
2299                                         pos += scnprintf(pos, limit - pos, ",");
2300                         }
2301                         snprintf(pos, 3, "]\"");
2302
2303                         if (ni_data->lic_ncpts >= 1 &&
2304                             cYAML_create_string(item, "CPT",
2305                                                 str_buf) == NULL)
2306                                 goto out;
2307                 }
2308         }
2309
2310         /* Print out the net information only if show_rc is not provided */
2311         if (show_rc == NULL)
2312                 cYAML_print_tree(root);
2313
2314         if (l_errno != ENOENT) {
2315                 snprintf(err_str,
2316                          sizeof(err_str),
2317                          "\"cannot get networks: %s\"",
2318                          strerror(l_errno));
2319                 rc = -l_errno;
2320                 goto out;
2321         } else
2322                 rc = LUSTRE_CFG_RC_NO_ERR;
2323
2324         snprintf(err_str, sizeof(err_str), "\"success\"");
2325 out:
2326         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR || !exist) {
2327                 cYAML_free_tree(root);
2328         } else if (show_rc != NULL && *show_rc != NULL) {
2329                 struct cYAML *show_node;
2330                 /* find the net node, if one doesn't exist
2331                  * then insert one.  Otherwise add to the one there
2332                  */
2333                 show_node = cYAML_get_object_item(*show_rc, "net");
2334                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
2335                         cYAML_insert_child(show_node, first_seq);
2336                         free(net_node);
2337                         free(root);
2338                 } else if (show_node == NULL) {
2339                         cYAML_insert_sibling((*show_rc)->cy_child,
2340                                                 net_node);
2341                         free(root);
2342                 } else {
2343                         cYAML_free_tree(root);
2344                 }
2345         } else {
2346                 *show_rc = root;
2347         }
2348
2349         cYAML_build_error(rc, seq_no, SHOW_CMD, "net", err_str, err_rc);
2350
2351         return rc;
2352 }
2353
2354 int lustre_lnet_enable_routing(int enable, int seq_no, struct cYAML **err_rc)
2355 {
2356         struct lnet_ioctl_config_data data;
2357         int rc = LUSTRE_CFG_RC_NO_ERR;
2358         char err_str[LNET_MAX_STR_LEN] = "\"success\"";
2359
2360         LIBCFS_IOC_INIT_V2(data, cfg_hdr);
2361         data.cfg_config_u.cfg_buffers.buf_enable = (enable) ? 1 : 0;
2362
2363         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_CONFIG_RTR, &data);
2364         if (rc != 0) {
2365                 rc = -errno;
2366                 snprintf(err_str,
2367                          sizeof(err_str),
2368                          "\"cannot %s routing %s\"",
2369                          (enable) ? "enable" : "disable", strerror(errno));
2370                 goto out;
2371         }
2372
2373 out:
2374         cYAML_build_error(rc, seq_no,
2375                          (enable) ? ADD_CMD : DEL_CMD,
2376                          "routing", err_str, err_rc);
2377
2378         return rc;
2379 }
2380
2381 int ioctl_set_value(__u32 val, int ioc, char *name,
2382                     int seq_no, struct cYAML **err_rc)
2383 {
2384         struct lnet_ioctl_set_value data;
2385         int rc = LUSTRE_CFG_RC_NO_ERR;
2386         char err_str[LNET_MAX_STR_LEN] = "\"success\"";
2387
2388         LIBCFS_IOC_INIT_V2(data, sv_hdr);
2389         data.sv_value = val;
2390
2391         rc = l_ioctl(LNET_DEV_ID, ioc , &data);
2392         if (rc != 0) {
2393                 rc = -errno;
2394                 snprintf(err_str,
2395                          sizeof(err_str),
2396                          "\"cannot configure %s to %d: %s\"", name,
2397                          val, strerror(errno));
2398         }
2399
2400         cYAML_build_error(rc, seq_no, ADD_CMD, name, err_str, err_rc);
2401
2402         return rc;
2403 }
2404
2405 int lustre_lnet_config_recov_intrv(int intrv, int seq_no, struct cYAML **err_rc)
2406 {
2407         int rc = LUSTRE_CFG_RC_NO_ERR;
2408         char err_str[LNET_MAX_STR_LEN] = "\"success\"";
2409         char val[LNET_MAX_STR_LEN];
2410
2411         snprintf(val, sizeof(val), "%d", intrv);
2412
2413         rc = write_sysfs_file(modparam_path, "lnet_recovery_interval", val,
2414                               1, strlen(val) + 1);
2415         if (rc)
2416                 snprintf(err_str, sizeof(err_str),
2417                          "\"cannot configure recovery interval: %s\"",
2418                          strerror(errno));
2419
2420         cYAML_build_error(rc, seq_no, ADD_CMD, "recovery_interval", err_str, err_rc);
2421
2422         return rc;
2423 }
2424
2425 int lustre_lnet_config_rtr_sensitivity(int sen, int seq_no, struct cYAML **err_rc)
2426 {
2427         int rc = LUSTRE_CFG_RC_NO_ERR;
2428         char err_str[LNET_MAX_STR_LEN] = "\"success\"";
2429         char val[LNET_MAX_STR_LEN];
2430
2431         snprintf(val, sizeof(val), "%d", sen);
2432
2433         rc = write_sysfs_file(modparam_path, "router_sensitivity_percentage", val,
2434                               1, strlen(val) + 1);
2435         if (rc)
2436                 snprintf(err_str, sizeof(err_str),
2437                          "\"cannot configure router health sensitivity: %s\"",
2438                          strerror(errno));
2439
2440         cYAML_build_error(rc, seq_no, ADD_CMD, "router_sensitivity", err_str, err_rc);
2441
2442         return rc;
2443 }
2444
2445 int lustre_lnet_config_hsensitivity(int sen, int seq_no, struct cYAML **err_rc)
2446 {
2447         int rc = LUSTRE_CFG_RC_NO_ERR;
2448         char err_str[LNET_MAX_STR_LEN] = "\"success\"";
2449         char val[LNET_MAX_STR_LEN];
2450
2451         snprintf(val, sizeof(val), "%d", sen);
2452
2453         rc = write_sysfs_file(modparam_path, "lnet_health_sensitivity", val,
2454                               1, strlen(val) + 1);
2455         if (rc)
2456                 snprintf(err_str, sizeof(err_str),
2457                          "\"cannot configure health sensitivity: %s\"",
2458                          strerror(errno));
2459
2460         cYAML_build_error(rc, seq_no, ADD_CMD, "health_sensitivity", err_str, err_rc);
2461
2462         return rc;
2463 }
2464
2465 int lustre_lnet_config_transaction_to(int timeout, int seq_no, struct cYAML **err_rc)
2466 {
2467         int rc = LUSTRE_CFG_RC_NO_ERR;
2468         char err_str[LNET_MAX_STR_LEN] = "\"success\"";
2469         char val[LNET_MAX_STR_LEN];
2470
2471         snprintf(val, sizeof(val), "%d", timeout);
2472
2473         rc = write_sysfs_file(modparam_path, "lnet_transaction_timeout", val,
2474                               1, strlen(val) + 1);
2475         if (rc)
2476                 snprintf(err_str, sizeof(err_str),
2477                          "\"cannot configure transaction timeout: %s\"",
2478                          strerror(errno));
2479
2480         cYAML_build_error(rc, seq_no, ADD_CMD, "transaction_timeout", err_str, err_rc);
2481
2482         return rc;
2483 }
2484
2485 int lustre_lnet_config_retry_count(int count, int seq_no, struct cYAML **err_rc)
2486 {
2487         int rc = LUSTRE_CFG_RC_NO_ERR;
2488         char err_str[LNET_MAX_STR_LEN] = "\"success\"";
2489         char val[LNET_MAX_STR_LEN];
2490
2491         snprintf(val, sizeof(val), "%d", count);
2492
2493         rc = write_sysfs_file(modparam_path, "lnet_retry_count", val,
2494                               1, strlen(val) + 1);
2495         if (rc)
2496                 snprintf(err_str, sizeof(err_str),
2497                          "\"cannot configure retry count: %s\"",
2498                          strerror(errno));
2499
2500         cYAML_build_error(rc, seq_no, ADD_CMD, "retry_count", err_str, err_rc);
2501
2502         return rc;
2503 }
2504
2505 int lustre_lnet_config_response_tracking(int val, int seq_no,
2506                                          struct cYAML **err_rc)
2507 {
2508         int rc = LUSTRE_CFG_RC_NO_ERR;
2509         char err_str[LNET_MAX_STR_LEN];
2510         char val_str[LNET_MAX_STR_LEN];
2511
2512         if (val < 0 || val > 3) {
2513                 rc = LUSTRE_CFG_RC_BAD_PARAM;
2514                 snprintf(err_str, sizeof(err_str),
2515                          "\"Valid values are: 0, 1, 2, or 3\"");
2516         } else {
2517                 snprintf(err_str, sizeof(err_str), "\"success\"");
2518
2519                 snprintf(val_str, sizeof(val_str), "%d", val);
2520
2521                 rc = write_sysfs_file(modparam_path, "lnet_response_tracking",
2522                                       val_str, 1, strlen(val_str) + 1);
2523                 if (rc)
2524                         snprintf(err_str, sizeof(err_str),
2525                                  "\"cannot configure response tracking: %s\"",
2526                                  strerror(errno));
2527         }
2528
2529         cYAML_build_error(rc, seq_no, ADD_CMD, "response_tracking", err_str,
2530                           err_rc);
2531
2532         return rc;
2533 }
2534
2535 int lustre_lnet_config_recovery_limit(int val, int seq_no,
2536                                       struct cYAML **err_rc)
2537 {
2538         int rc = LUSTRE_CFG_RC_NO_ERR;
2539         char err_str[LNET_MAX_STR_LEN];
2540         char val_str[LNET_MAX_STR_LEN];
2541
2542         if (val < 0) {
2543                 rc = LUSTRE_CFG_RC_BAD_PARAM;
2544                 snprintf(err_str, sizeof(err_str),
2545                          "\"Must be greater than or equal to 0\"");
2546         } else {
2547                 snprintf(err_str, sizeof(err_str), "\"success\"");
2548
2549                 snprintf(val_str, sizeof(val_str), "%d", val);
2550
2551                 rc = write_sysfs_file(modparam_path, "lnet_recovery_limit",
2552                                       val_str, 1, strlen(val_str) + 1);
2553                 if (rc)
2554                         snprintf(err_str, sizeof(err_str),
2555                                  "\"cannot configure recovery limit: %s\"",
2556                                  strerror(errno));
2557         }
2558
2559         cYAML_build_error(rc, seq_no, ADD_CMD, "recovery_limit", err_str,
2560                           err_rc);
2561
2562         return rc;
2563 }
2564
2565 int lustre_lnet_config_max_intf(int max, int seq_no, struct cYAML **err_rc)
2566 {
2567         int rc = LUSTRE_CFG_RC_NO_ERR;
2568         char err_str[LNET_MAX_STR_LEN] = "\"success\"";
2569         char val[LNET_MAX_STR_LEN];
2570
2571         snprintf(val, sizeof(val), "%d", max);
2572
2573         rc = write_sysfs_file(modparam_path, "lnet_interfaces_max", val,
2574                               1, strlen(val) + 1);
2575         if (rc)
2576                 snprintf(err_str, sizeof(err_str),
2577                          "\"cannot configure max interfaces: %s\"",
2578                          strerror(errno));
2579
2580         cYAML_build_error(rc, seq_no, ADD_CMD, "max_interfaces", err_str, err_rc);
2581
2582         return rc;
2583 }
2584
2585 int lustre_lnet_config_discovery(int enable, int seq_no, struct cYAML **err_rc)
2586 {
2587         int rc = LUSTRE_CFG_RC_NO_ERR;
2588         char err_str[LNET_MAX_STR_LEN] = "\"success\"";
2589         char val[LNET_MAX_STR_LEN];
2590
2591         snprintf(val, sizeof(val), "%u", (enable) ? 0 : 1);
2592
2593         rc = write_sysfs_file(modparam_path, "lnet_peer_discovery_disabled", val,
2594                               1, strlen(val) + 1);
2595         if (rc)
2596                 snprintf(err_str, sizeof(err_str),
2597                          "\"cannot configure discovery: %s\"",
2598                          strerror(errno));
2599
2600         cYAML_build_error(rc, seq_no, ADD_CMD, "discovery", err_str, err_rc);
2601
2602         return rc;
2603
2604 }
2605
2606 int lustre_lnet_config_drop_asym_route(int drop, int seq_no,
2607                                        struct cYAML **err_rc)
2608 {
2609         int rc = LUSTRE_CFG_RC_NO_ERR;
2610         char err_str[LNET_MAX_STR_LEN] = "\"success\"";
2611         char val[LNET_MAX_STR_LEN];
2612
2613         snprintf(val, sizeof(val), "%u", (drop) ? 1 : 0);
2614
2615         rc = write_sysfs_file(modparam_path, "lnet_drop_asym_route", val,
2616                               1, strlen(val) + 1);
2617         if (rc)
2618                 snprintf(err_str, sizeof(err_str),
2619                          "\"cannot configure drop asym route: %s\"",
2620                          strerror(errno));
2621
2622         cYAML_build_error(rc, seq_no, ADD_CMD, "drop_asym_route",
2623                           err_str, err_rc);
2624
2625         return rc;
2626
2627 }
2628
2629 int lustre_lnet_config_numa_range(int range, int seq_no, struct cYAML **err_rc)
2630 {
2631         return ioctl_set_value(range, IOC_LIBCFS_SET_NUMA_RANGE,
2632                                "numa_range", seq_no, err_rc);
2633 }
2634
2635 int lustre_lnet_config_buffers(int tiny, int small, int large, int seq_no,
2636                                struct cYAML **err_rc)
2637 {
2638         struct lnet_ioctl_config_data data;
2639         int rc = LUSTRE_CFG_RC_NO_ERR;
2640         char err_str[LNET_MAX_STR_LEN] = "\"success\"";
2641
2642         /* -1 indicates to ignore changes to this field */
2643         if (tiny < -1 || small < -1 || large < -1) {
2644                 snprintf(err_str,
2645                          sizeof(err_str),
2646                          "\"tiny, small and large must be >= 0\"");
2647                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
2648                 goto out;
2649         }
2650
2651         LIBCFS_IOC_INIT_V2(data, cfg_hdr);
2652         data.cfg_config_u.cfg_buffers.buf_tiny = tiny;
2653         data.cfg_config_u.cfg_buffers.buf_small = small;
2654         data.cfg_config_u.cfg_buffers.buf_large = large;
2655
2656         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_ADD_BUF, &data);
2657         if (rc != 0) {
2658                 rc = -errno;
2659                 snprintf(err_str,
2660                          sizeof(err_str),
2661                          "\"cannot configure buffers: %s\"", strerror(errno));
2662                 goto out;
2663         }
2664
2665 out:
2666         cYAML_build_error(rc, seq_no, ADD_CMD, "buf", err_str, err_rc);
2667
2668         return rc;
2669 }
2670
2671 int lustre_lnet_show_routing(int seq_no, struct cYAML **show_rc,
2672                              struct cYAML **err_rc, bool backup)
2673 {
2674         struct lnet_ioctl_config_data *data;
2675         struct lnet_ioctl_pool_cfg *pool_cfg = NULL;
2676         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
2677         int l_errno = 0;
2678         char *buf;
2679         char *pools[LNET_NRBPOOLS] = {"tiny", "small", "large"};
2680         int buf_count[LNET_NRBPOOLS] = {0};
2681         struct cYAML *root = NULL, *pools_node = NULL,
2682                      *type_node = NULL, *item = NULL, *cpt = NULL,
2683                      *first_seq = NULL, *buffers = NULL;
2684         int i, j;
2685         char err_str[LNET_MAX_STR_LEN] = "\"out of memory\"";
2686         char node_name[LNET_MAX_STR_LEN];
2687         bool exist = false;
2688
2689         buf = calloc(1, sizeof(*data) + sizeof(*pool_cfg));
2690         if (buf == NULL)
2691                 goto out;
2692
2693         data = (struct lnet_ioctl_config_data *)buf;
2694
2695         root = cYAML_create_object(NULL, NULL);
2696         if (root == NULL)
2697                 goto out;
2698
2699         if (backup)
2700                 pools_node = cYAML_create_object(root, "routing");
2701         else
2702                 pools_node = cYAML_create_seq(root, "routing");
2703         if (pools_node == NULL)
2704                 goto out;
2705
2706         for (i = 0;; i++) {
2707                 LIBCFS_IOC_INIT_V2(*data, cfg_hdr);
2708                 data->cfg_hdr.ioc_len = sizeof(struct lnet_ioctl_config_data) +
2709                                         sizeof(struct lnet_ioctl_pool_cfg);
2710                 data->cfg_count = i;
2711
2712                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_BUF, data);
2713                 if (rc != 0) {
2714                         l_errno = errno;
2715                         break;
2716                 }
2717
2718                 exist = true;
2719
2720                 pool_cfg = (struct lnet_ioctl_pool_cfg *)data->cfg_bulk;
2721
2722                 if (backup)
2723                         goto calculate_buffers;
2724
2725                 snprintf(node_name, sizeof(node_name), "cpt[%d]", i);
2726                 item = cYAML_create_seq_item(pools_node);
2727                 if (item == NULL)
2728                         goto out;
2729
2730                 if (first_seq == NULL)
2731                         first_seq = item;
2732
2733                 cpt = cYAML_create_object(item, node_name);
2734                 if (cpt == NULL)
2735                         goto out;
2736
2737 calculate_buffers:
2738                 /* create the tree  and print */
2739                 for (j = 0; j < LNET_NRBPOOLS; j++) {
2740                         if (!backup) {
2741                                 type_node = cYAML_create_object(cpt, pools[j]);
2742                                 if (type_node == NULL)
2743                                         goto out;
2744                         }
2745                         if (!backup &&
2746                             cYAML_create_number(type_node, "npages",
2747                                                 pool_cfg->pl_pools[j].pl_npages)
2748                             == NULL)
2749                                 goto out;
2750                         if (!backup &&
2751                             cYAML_create_number(type_node, "nbuffers",
2752                                                 pool_cfg->pl_pools[j].
2753                                                   pl_nbuffers) == NULL)
2754                                 goto out;
2755                         if (!backup &&
2756                             cYAML_create_number(type_node, "credits",
2757                                                 pool_cfg->pl_pools[j].
2758                                                    pl_credits) == NULL)
2759                                 goto out;
2760                         if (!backup &&
2761                             cYAML_create_number(type_node, "mincredits",
2762                                                 pool_cfg->pl_pools[j].
2763                                                    pl_mincredits) == NULL)
2764                                 goto out;
2765                         /* keep track of the total count for each of the
2766                          * tiny, small and large buffers */
2767                         buf_count[j] += pool_cfg->pl_pools[j].pl_nbuffers;
2768                 }
2769         }
2770
2771         if (pool_cfg != NULL) {
2772                 if (backup) {
2773                         if (cYAML_create_number(pools_node, "enable",
2774                                                 pool_cfg->pl_routing) ==
2775                         NULL)
2776                                 goto out;
2777
2778                         goto add_buffer_section;
2779                 }
2780
2781                 item = cYAML_create_seq_item(pools_node);
2782                 if (item == NULL)
2783                         goto out;
2784
2785                 if (cYAML_create_number(item, "enable", pool_cfg->pl_routing) ==
2786                     NULL)
2787                         goto out;
2788         }
2789
2790 add_buffer_section:
2791         /* create a buffers entry in the show. This is necessary so that
2792          * if the YAML output is used to configure a node, the buffer
2793          * configuration takes hold */
2794         buffers = cYAML_create_object(root, "buffers");
2795         if (buffers == NULL)
2796                 goto out;
2797
2798         for (i = 0; i < LNET_NRBPOOLS; i++) {
2799                 if (cYAML_create_number(buffers, pools[i], buf_count[i]) == NULL)
2800                         goto out;
2801         }
2802
2803         if (show_rc == NULL)
2804                 cYAML_print_tree(root);
2805
2806         if (l_errno != ENOENT) {
2807                 snprintf(err_str,
2808                          sizeof(err_str),
2809                          "\"cannot get routing information: %s\"",
2810                          strerror(l_errno));
2811                 rc = -l_errno;
2812                 goto out;
2813         } else
2814                 rc = LUSTRE_CFG_RC_NO_ERR;
2815
2816         snprintf(err_str, sizeof(err_str), "\"success\"");
2817         rc = LUSTRE_CFG_RC_NO_ERR;
2818
2819 out:
2820         free(buf);
2821         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR || !exist) {
2822                 cYAML_free_tree(root);
2823         } else if (show_rc != NULL && *show_rc != NULL) {
2824                 struct cYAML *routing_node;
2825                 /* there should exist only one routing block and one
2826                  * buffers block. If there already exists a previous one
2827                  * then don't add another */
2828                 routing_node = cYAML_get_object_item(*show_rc, "routing");
2829                 if (routing_node == NULL) {
2830                         cYAML_insert_sibling((*show_rc)->cy_child,
2831                                                 root->cy_child);
2832                         free(root);
2833                 } else {
2834                         cYAML_free_tree(root);
2835                 }
2836         } else {
2837                 *show_rc = root;
2838         }
2839
2840         cYAML_build_error(rc, seq_no, SHOW_CMD, "routing", err_str, err_rc);
2841
2842         return rc;
2843 }
2844
2845 int lustre_lnet_show_peer(char *knid, int detail, int seq_no,
2846                           struct cYAML **show_rc, struct cYAML **err_rc,
2847                           bool backup)
2848 {
2849         /*
2850          * TODO: This function is changing in a future patch to accommodate
2851          * PEER_LIST and proper filtering on any nid of the peer
2852          */
2853         struct lnet_ioctl_peer_cfg peer_info;
2854         struct lnet_peer_ni_credit_info *lpni_cri;
2855         struct lnet_ioctl_element_stats *lpni_stats;
2856         struct lnet_ioctl_element_msg_stats *msg_stats;
2857         struct lnet_ioctl_peer_ni_hstats *hstats;
2858         struct lnet_ioctl_construct_udsp_info udsp_info;
2859         lnet_nid_t *nidp;
2860         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
2861         int i, j, k;
2862         int l_errno = 0;
2863         __u32 count;
2864         __u32 size;
2865         struct cYAML *root = NULL, *peer = NULL, *peer_ni = NULL,
2866                      *first_seq = NULL, *peer_root = NULL, *tmp = NULL,
2867                      *msg_statistics = NULL, *statistics = NULL,
2868                      *yhstats;
2869         char err_str[LNET_MAX_STR_LEN] = "\"out of memory\"";
2870         struct lnet_process_id *list = NULL;
2871         void *data = NULL;
2872         void *lpni_data;
2873         bool exist = false;
2874
2875         /* create struct cYAML root object */
2876         root = cYAML_create_object(NULL, NULL);
2877         if (root == NULL)
2878                 goto out;
2879
2880         peer_root = cYAML_create_seq(root, "peer");
2881         if (peer_root == NULL)
2882                 goto out;
2883
2884         count = 1000;
2885         size = count * sizeof(struct lnet_process_id);
2886         list = malloc(size);
2887         if (list == NULL) {
2888                 l_errno = ENOMEM;
2889                 goto out;
2890         }
2891         if (knid != NULL) {
2892                 list[0].nid = libcfs_str2nid(knid);
2893                 count = 1;
2894         } else {
2895                 for (;;) {
2896                         memset(&peer_info, 0, sizeof(peer_info));
2897                         LIBCFS_IOC_INIT_V2(peer_info, prcfg_hdr);
2898                         peer_info.prcfg_hdr.ioc_len = sizeof(peer_info);
2899                         peer_info.prcfg_size = size;
2900                         peer_info.prcfg_bulk = list;
2901
2902                         l_errno = 0;
2903                         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_PEER_LIST,
2904                                      &peer_info);
2905                         count = peer_info.prcfg_count;
2906                         if (rc == 0)
2907                                 break;
2908                         l_errno = errno;
2909                         if (l_errno != E2BIG) {
2910                                 snprintf(err_str,
2911                                         sizeof(err_str),
2912                                         "\"cannot get peer list: %s\"",
2913                                         strerror(l_errno));
2914                                 rc = -l_errno;
2915                                 goto out;
2916                         }
2917                         free(list);
2918                         size = peer_info.prcfg_size;
2919                         list = malloc(size);
2920                         if (list == NULL) {
2921                                 l_errno = ENOMEM;
2922                                 goto out;
2923                         }
2924                 }
2925         }
2926
2927         size = 4096;
2928         data = malloc(size);
2929         if (data == NULL) {
2930                 l_errno = ENOMEM;
2931                 goto out;
2932         }
2933
2934         for (i = 0; i < count; i++) {
2935                 for (;;) {
2936                         memset(&peer_info, 0, sizeof(peer_info));
2937                         LIBCFS_IOC_INIT_V2(peer_info, prcfg_hdr);
2938                         peer_info.prcfg_hdr.ioc_len = sizeof(peer_info);
2939                         peer_info.prcfg_prim_nid = list[i].nid;
2940                         peer_info.prcfg_size = size;
2941                         peer_info.prcfg_bulk = data;
2942
2943                         l_errno = 0;
2944                         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_PEER_NI,
2945                                      &peer_info);
2946                         if (rc == 0)
2947                                 break;
2948                         l_errno = errno;
2949                         if (l_errno != E2BIG) {
2950                                 snprintf(err_str,
2951                                         sizeof(err_str),
2952                                         "\"cannot get peer information: %s\"",
2953                                         strerror(l_errno));
2954                                 rc = -l_errno;
2955                                 goto out;
2956                         }
2957                         free(data);
2958                         size = peer_info.prcfg_size;
2959                         data = malloc(size);
2960                         if (data == NULL) {
2961                                 l_errno = ENOMEM;
2962                                 goto out;
2963                         }
2964                 }
2965                 exist = true;
2966
2967                 peer = cYAML_create_seq_item(peer_root);
2968                 if (peer == NULL)
2969                         goto out;
2970
2971                 if (first_seq == NULL)
2972                         first_seq = peer;
2973
2974                 lnet_nid_t pnid = peer_info.prcfg_prim_nid;
2975                 if (cYAML_create_string(peer, "primary nid",
2976                                         libcfs_nid2str(pnid))
2977                     == NULL)
2978                         goto out;
2979                 if (cYAML_create_string(peer, "Multi-Rail",
2980                                         peer_info.prcfg_mr ? "True" : "False")
2981                     == NULL)
2982                         goto out;
2983                 /*
2984                  * print out the state of the peer only if details are
2985                  * requested
2986                  */
2987                 if (detail >= 3) {
2988                         if (!backup &&
2989                             cYAML_create_number(peer, "peer state",
2990                                                 peer_info.prcfg_state)
2991                                 == NULL)
2992                                 goto out;
2993                 }
2994
2995                 tmp = cYAML_create_seq(peer, "peer ni");
2996                 if (tmp == NULL)
2997                         goto out;
2998
2999                 lpni_data = data;
3000                 for (j = 0; j < peer_info.prcfg_count; j++) {
3001                         nidp = lpni_data;
3002                         lpni_cri = (void*)nidp + sizeof(nidp);
3003                         lpni_stats = (void *)lpni_cri + sizeof(*lpni_cri);
3004                         msg_stats = (void *)lpni_stats + sizeof(*lpni_stats);
3005                         hstats = (void *)msg_stats + sizeof(*msg_stats);
3006                         lpni_data = (void *)hstats + sizeof(*hstats);
3007
3008                         peer_ni = cYAML_create_seq_item(tmp);
3009                         if (peer_ni == NULL)
3010                                 goto out;
3011
3012                         if (cYAML_create_string(peer_ni, "nid",
3013                                                 libcfs_nid2str(*nidp))
3014                             == NULL)
3015                                 goto out;
3016
3017                         if (backup)
3018                                 continue;
3019
3020                         if (detail < 4)
3021                                 goto continue_without_udsp_info;
3022
3023                         LIBCFS_IOC_INIT_V2(udsp_info, cud_hdr);
3024                         udsp_info.cud_nid = *nidp;
3025                         udsp_info.cud_peer = true;
3026                         rc = l_ioctl(LNET_DEV_ID,
3027                                         IOC_LIBCFS_GET_CONST_UDSP_INFO,
3028                                         &udsp_info);
3029                         if (rc != 0) {
3030                                 l_errno = errno;
3031                                 goto continue_without_udsp_info;
3032                         }
3033
3034                         rc = create_remote_udsp_info(&udsp_info, peer_ni);
3035                         if (rc) {
3036                                 l_errno = errno;
3037                                 goto out;
3038                         }
3039
3040 continue_without_udsp_info:
3041                         if (cYAML_create_string(peer_ni, "state",
3042                                                 lpni_cri->cr_aliveness)
3043                             == NULL)
3044                                 goto out;
3045
3046                         if (!detail)
3047                                 continue;
3048
3049                         if (cYAML_create_number(peer_ni, "max_ni_tx_credits",
3050                                                 lpni_cri->cr_ni_peer_tx_credits)
3051                             == NULL)
3052                                 goto out;
3053
3054                         if (cYAML_create_number(peer_ni, "available_tx_credits",
3055                                                 lpni_cri->cr_peer_tx_credits)
3056                             == NULL)
3057                                 goto out;
3058
3059                         if (cYAML_create_number(peer_ni, "min_tx_credits",
3060                                                 lpni_cri->cr_peer_min_tx_credits)
3061                             == NULL)
3062                                 goto out;
3063
3064                         if (cYAML_create_number(peer_ni, "tx_q_num_of_buf",
3065                                                 lpni_cri->cr_peer_tx_qnob)
3066                             == NULL)
3067                                 goto out;
3068
3069                         if (cYAML_create_number(peer_ni, "available_rtr_credits",
3070                                                 lpni_cri->cr_peer_rtr_credits)
3071                             == NULL)
3072                                 goto out;
3073
3074                         if (cYAML_create_number(peer_ni, "min_rtr_credits",
3075                                                 lpni_cri->cr_peer_min_rtr_credits)
3076                             == NULL)
3077                                 goto out;
3078
3079                         if (cYAML_create_number(peer_ni, "refcount",
3080                                                 lpni_cri->cr_refcount) == NULL)
3081                                 goto out;
3082
3083                         statistics = cYAML_create_object(peer_ni, "statistics");
3084                         if (statistics == NULL)
3085                                 goto out;
3086
3087                         if (cYAML_create_number(statistics, "send_count",
3088                                                 lpni_stats->iel_send_count)
3089                             == NULL)
3090                                 goto out;
3091
3092                         if (cYAML_create_number(statistics, "recv_count",
3093                                                 lpni_stats->iel_recv_count)
3094                             == NULL)
3095                                 goto out;
3096
3097                         if (cYAML_create_number(statistics, "drop_count",
3098                                                 lpni_stats->iel_drop_count)
3099                             == NULL)
3100                                 goto out;
3101
3102                         if (detail < 2)
3103                                 continue;
3104
3105                         for (k = 0; k < 3; k++) {
3106                                 struct lnet_ioctl_comm_count *counts;
3107
3108                                 msg_statistics = cYAML_create_object(peer_ni,
3109                                                  (char *) gmsg_stat_names[k]);
3110                                 if (msg_statistics == NULL)
3111                                         goto out;
3112
3113                                 counts = get_counts(msg_stats, k);
3114                                 if (counts == NULL)
3115                                         goto out;
3116
3117                                 if (!add_msg_stats_to_yaml_blk(msg_statistics,
3118                                                                counts))
3119                                         goto out;
3120                         }
3121
3122                         yhstats = cYAML_create_object(peer_ni, "health stats");
3123                         if (!yhstats)
3124                                 goto out;
3125                         if (cYAML_create_number(yhstats, "health value",
3126                                                 hstats->hlpni_health_value)
3127                                                         == NULL)
3128                                 goto out;
3129                         if (cYAML_create_number(yhstats, "dropped",
3130                                                 hstats->hlpni_remote_dropped)
3131                                                         == NULL)
3132                                 goto out;
3133                         if (cYAML_create_number(yhstats, "timeout",
3134                                                 hstats->hlpni_remote_timeout)
3135                                                         == NULL)
3136                                 goto out;
3137                         if (cYAML_create_number(yhstats, "error",
3138                                                 hstats->hlpni_remote_error)
3139                                                         == NULL)
3140                                 goto out;
3141                         if (cYAML_create_number(yhstats, "network timeout",
3142                                                 hstats->hlpni_network_timeout)
3143                                                         == NULL)
3144                                 goto out;
3145                         if (cYAML_create_number(yhstats, "ping_count",
3146                                                 hstats->hlpni_ping_count)
3147                                                         == NULL)
3148                                 goto out;
3149
3150                         if (cYAML_create_number(yhstats, "next_ping",
3151                                                 hstats->hlpni_next_ping)
3152                                                         == NULL)
3153                                 goto out;
3154
3155                 }
3156         }
3157
3158         /* print output iff show_rc is not provided */
3159         if (show_rc == NULL)
3160                 cYAML_print_tree(root);
3161
3162         snprintf(err_str, sizeof(err_str), "\"success\"");
3163         rc = LUSTRE_CFG_RC_NO_ERR;
3164
3165 out:
3166         free(list);
3167         free(data);
3168         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR || !exist) {
3169                 cYAML_free_tree(root);
3170         } else if (show_rc != NULL && *show_rc != NULL) {
3171                 struct cYAML *show_node;
3172                 /* find the peer node, if one doesn't exist then
3173                  * insert one.  Otherwise add to the one there
3174                  */
3175                 show_node = cYAML_get_object_item(*show_rc,
3176                                                   "peer");
3177                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
3178                         cYAML_insert_child(show_node, first_seq);
3179                         free(peer_root);
3180                         free(root);
3181                 } else if (show_node == NULL) {
3182                         cYAML_insert_sibling((*show_rc)->cy_child,
3183                                              peer_root);
3184                         free(root);
3185                 } else {
3186                         cYAML_free_tree(root);
3187                 }
3188         } else {
3189                 *show_rc = root;
3190         }
3191
3192         cYAML_build_error(rc, seq_no, SHOW_CMD, "peer", err_str,
3193                           err_rc);
3194
3195         return rc;
3196 }
3197
3198 int lustre_lnet_list_peer(int seq_no,
3199                           struct cYAML **show_rc, struct cYAML **err_rc)
3200 {
3201         struct lnet_ioctl_peer_cfg peer_info;
3202         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3203         __u32 count;
3204         __u32 size;
3205         int i = 0;
3206         int l_errno = 0;
3207         struct cYAML *root = NULL, *list_root = NULL, *first_seq = NULL;
3208         char err_str[LNET_MAX_STR_LEN] = "\"out of memory\"";
3209         struct lnet_process_id *list = NULL;
3210
3211         memset(&peer_info, 0, sizeof(peer_info));
3212
3213         /* create struct cYAML root object */
3214         root = cYAML_create_object(NULL, NULL);
3215         if (root == NULL)
3216                 goto out;
3217
3218         list_root = cYAML_create_seq(root, "peer list");
3219         if (list_root == NULL)
3220                 goto out;
3221
3222         count = 1000;
3223         size = count * sizeof(struct lnet_process_id);
3224         list = malloc(size);
3225         if (list == NULL) {
3226                 l_errno = ENOMEM;
3227                 goto out;
3228         }
3229         for (;;) {
3230                 LIBCFS_IOC_INIT_V2(peer_info, prcfg_hdr);
3231                 peer_info.prcfg_hdr.ioc_len = sizeof(peer_info);
3232                 peer_info.prcfg_size = size;
3233                 peer_info.prcfg_bulk = list;
3234
3235                 l_errno = 0;
3236                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_PEER_LIST, &peer_info);
3237                 count = peer_info.prcfg_count;
3238                 if (rc == 0)
3239                         break;
3240                 l_errno = errno;
3241                 if (l_errno != E2BIG) {
3242                         snprintf(err_str,
3243                                 sizeof(err_str),
3244                                 "\"cannot get peer list: %s\"",
3245                                 strerror(l_errno));
3246                         rc = -l_errno;
3247                         goto out;
3248                 }
3249                 free(list);
3250                 size = peer_info.prcfg_size;
3251                 list = malloc(size);
3252                 if (list == NULL) {
3253                         l_errno = ENOMEM;
3254                         goto out;
3255                 }
3256         }
3257
3258         /* count is now the actual number of ids in the list. */
3259         for (i = 0; i < count; i++) {
3260                 if (cYAML_create_string(list_root, "nid",
3261                                         libcfs_nid2str(list[i].nid))
3262                     == NULL)
3263                         goto out;
3264         }
3265
3266         /* print output iff show_rc is not provided */
3267         if (show_rc == NULL)
3268                 cYAML_print_tree(root);
3269
3270         snprintf(err_str, sizeof(err_str), "\"success\"");
3271         rc = LUSTRE_CFG_RC_NO_ERR;
3272
3273 out:
3274         if (list != NULL)
3275                 free(list);
3276         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR) {
3277                 cYAML_free_tree(root);
3278         } else if (show_rc != NULL && *show_rc != NULL) {
3279                 struct cYAML *show_node;
3280                 /* find the peer node, if one doesn't exist then
3281                  * insert one.  Otherwise add to the one there
3282                  */
3283                 show_node = cYAML_get_object_item(*show_rc,
3284                                                   "peer");
3285                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
3286                         cYAML_insert_child(show_node, first_seq);
3287                         free(list_root);
3288                         free(root);
3289                 } else if (show_node == NULL) {
3290                         cYAML_insert_sibling((*show_rc)->cy_child,
3291                                              list_root);
3292                         free(root);
3293                 } else {
3294                         cYAML_free_tree(root);
3295                 }
3296         } else {
3297                 *show_rc = root;
3298         }
3299
3300         cYAML_build_error(rc, seq_no, SHOW_CMD, "peer", err_str,
3301                           err_rc);
3302
3303         return rc;
3304 }
3305
3306 static void add_to_global(struct cYAML *show_rc, struct cYAML *node,
3307                           struct cYAML *root)
3308 {
3309         struct cYAML *show_node;
3310
3311         show_node = cYAML_get_object_item(show_rc, "global");
3312         if (show_node != NULL)
3313                 cYAML_insert_sibling(show_node->cy_child,
3314                                      node->cy_child);
3315         else
3316                 cYAML_insert_sibling(show_rc->cy_child,
3317                                      node);
3318         free(root);
3319 }
3320
3321 static int build_global_yaml_entry(char *err_str, int err_len, int seq_no,
3322                                    char *name, __u64 value,
3323                                    struct cYAML **show_rc,
3324                                    struct cYAML **err_rc, int err)
3325 {
3326         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3327         struct cYAML *root = NULL, *global = NULL;
3328
3329         if (err) {
3330                 rc = err;
3331                 goto out;
3332         }
3333
3334         root = cYAML_create_object(NULL, NULL);
3335         if (root == NULL)
3336                 goto out;
3337
3338         global = cYAML_create_object(root, "global");
3339         if (global == NULL)
3340                 goto out;
3341
3342         if (cYAML_create_number(global, name,
3343                                 value) == NULL)
3344                 goto out;
3345
3346         if (show_rc == NULL)
3347                 cYAML_print_tree(root);
3348
3349         snprintf(err_str, err_len, "\"success\"");
3350
3351         rc = LUSTRE_CFG_RC_NO_ERR;
3352
3353 out:
3354         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR) {
3355                 cYAML_free_tree(root);
3356         } else if (show_rc != NULL && *show_rc != NULL) {
3357                 add_to_global(*show_rc, global, root);
3358         } else {
3359                 *show_rc = root;
3360         }
3361
3362         cYAML_build_error(rc, seq_no, SHOW_CMD, "global", err_str, err_rc);
3363
3364         return rc;
3365 }
3366
3367 static int ioctl_show_global_values(int ioc, int seq_no, char *name,
3368                                     struct cYAML **show_rc,
3369                                     struct cYAML **err_rc)
3370 {
3371         struct lnet_ioctl_set_value data;
3372         int rc;
3373         int l_errno = 0;
3374         char err_str[LNET_MAX_STR_LEN] = "\"out of memory\"";
3375
3376         LIBCFS_IOC_INIT_V2(data, sv_hdr);
3377
3378         rc = l_ioctl(LNET_DEV_ID, ioc, &data);
3379         if (rc != 0) {
3380                 l_errno = -errno;
3381                 snprintf(err_str,
3382                          sizeof(err_str),
3383                          "\"cannot get %s: %s\"",
3384                          name, strerror(l_errno));
3385         }
3386
3387         return build_global_yaml_entry(err_str, sizeof(err_str), seq_no, name,
3388                                        data.sv_value, show_rc, err_rc, l_errno);
3389 }
3390
3391 int lustre_lnet_show_recov_intrv(int seq_no, struct cYAML **show_rc,
3392                                  struct cYAML **err_rc)
3393 {
3394         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3395         char val[LNET_MAX_STR_LEN];
3396         int intrv = -1, l_errno = 0;
3397         char err_str[LNET_MAX_STR_LEN] = "\"out of memory\"";
3398
3399         rc = read_sysfs_file(modparam_path, "lnet_recovery_interval", val,
3400                              1, sizeof(val));
3401         if (rc) {
3402                 l_errno = -errno;
3403                 snprintf(err_str, sizeof(err_str),
3404                          "\"cannot get recovery interval: %d\"", rc);
3405         } else {
3406                 intrv = atoi(val);
3407         }
3408
3409         return build_global_yaml_entry(err_str, sizeof(err_str), seq_no,
3410                                        "recovery_interval", intrv, show_rc,
3411                                        err_rc, l_errno);
3412 }
3413
3414 int lustre_lnet_show_hsensitivity(int seq_no, struct cYAML **show_rc,
3415                                   struct cYAML **err_rc)
3416 {
3417         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3418         char val[LNET_MAX_STR_LEN];
3419         int sen = -1, l_errno = 0;
3420         char err_str[LNET_MAX_STR_LEN] = "\"out of memory\"";
3421
3422         rc = read_sysfs_file(modparam_path, "lnet_health_sensitivity", val,
3423                              1, sizeof(val));
3424         if (rc) {
3425                 l_errno = -errno;
3426                 snprintf(err_str, sizeof(err_str),
3427                          "\"cannot get health sensitivity: %d\"", rc);
3428         } else {
3429                 sen = atoi(val);
3430         }
3431
3432         return build_global_yaml_entry(err_str, sizeof(err_str), seq_no,
3433                                        "health_sensitivity", sen, show_rc,
3434                                        err_rc, l_errno);
3435 }
3436
3437 int lustre_lnet_show_rtr_sensitivity(int seq_no, struct cYAML **show_rc,
3438                                      struct cYAML **err_rc)
3439 {
3440         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3441         char val[LNET_MAX_STR_LEN];
3442         int sen = -1, l_errno = 0;
3443         char err_str[LNET_MAX_STR_LEN] = "\"out of memory\"";
3444
3445         rc = read_sysfs_file(modparam_path, "router_sensitivity_percentage", val,
3446                              1, sizeof(val));
3447         if (rc) {
3448                 l_errno = -errno;
3449                 snprintf(err_str, sizeof(err_str),
3450                          "\"cannot get router sensitivity percentage: %d\"", rc);
3451         } else {
3452                 sen = atoi(val);
3453         }
3454
3455         return build_global_yaml_entry(err_str, sizeof(err_str), seq_no,
3456                                        "router_sensitivity", sen, show_rc,
3457                                        err_rc, l_errno);
3458 }
3459
3460 int lustre_lnet_show_lnd_timeout(int seq_no, struct cYAML **show_rc,
3461                                  struct cYAML **err_rc)
3462 {
3463         char val[LNET_MAX_STR_LEN];
3464         char err_str[LNET_MAX_STR_LEN] = "\"out of memory\"";
3465         int lnd_to = -1;
3466         int l_errno = 0;
3467         int rc;
3468         int fd;
3469         glob_t path;
3470
3471         rc = cfs_get_param_paths(&path, "lnet_lnd_timeout");
3472         if (rc < 0) {
3473                 l_errno = -errno;
3474                 snprintf(err_str, sizeof(err_str),
3475                          "\"cannot get LND timeout: %d\"", rc);
3476                 return build_global_yaml_entry(err_str, sizeof(err_str), seq_no,
3477                                                "lnd_timeout", lnd_to, show_rc,
3478                                                err_rc, l_errno);
3479         }
3480
3481         fd = open(path.gl_pathv[0], O_RDONLY);
3482         if (fd < 0) {
3483                 l_errno = -errno;
3484                 snprintf(err_str, sizeof(err_str),
3485                          "\"error opening %s\"", path.gl_pathv[0]);
3486                 goto failed;
3487         }
3488
3489         rc = read(fd, val, sizeof(val));
3490         if (rc < 0)
3491                 l_errno = -errno;
3492
3493         close(fd);
3494
3495         if (rc < 0) {
3496                 snprintf(err_str, sizeof(err_str),
3497                          "\"error reading %s\"", path.gl_pathv[0]);
3498                 goto failed;
3499         }
3500
3501         lnd_to = atoi(val);
3502
3503 failed:
3504         cfs_free_param_data(&path);
3505
3506         return build_global_yaml_entry(err_str, sizeof(err_str), seq_no,
3507                                        "lnd_timeout", lnd_to, show_rc,
3508                                        err_rc, l_errno);
3509 }
3510
3511 int lustre_lnet_show_transaction_to(int seq_no, struct cYAML **show_rc,
3512                                     struct cYAML **err_rc)
3513 {
3514         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3515         char val[LNET_MAX_STR_LEN];
3516         int tto = -1, l_errno = 0;
3517         char err_str[LNET_MAX_STR_LEN] = "\"out of memory\"";
3518
3519         rc = read_sysfs_file(modparam_path, "lnet_transaction_timeout", val,
3520                              1, sizeof(val));
3521         if (rc) {
3522                 l_errno = -errno;
3523                 snprintf(err_str, sizeof(err_str),
3524                          "\"cannot get transaction timeout: %d\"", rc);
3525         } else {
3526                 tto = atoi(val);
3527         }
3528
3529         return build_global_yaml_entry(err_str, sizeof(err_str), seq_no,
3530                                        "transaction_timeout", tto, show_rc,
3531                                        err_rc, l_errno);
3532 }
3533
3534 int lustre_lnet_show_retry_count(int seq_no, struct cYAML **show_rc,
3535                                  struct cYAML **err_rc)
3536 {
3537         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3538         char val[LNET_MAX_STR_LEN];
3539         int retry_count = -1, l_errno = 0;
3540         char err_str[LNET_MAX_STR_LEN] = "\"out of memory\"";
3541
3542         rc = read_sysfs_file(modparam_path, "lnet_retry_count", val,
3543                              1, sizeof(val));
3544         if (rc) {
3545                 l_errno = -errno;
3546                 snprintf(err_str, sizeof(err_str),
3547                          "\"cannot get retry count: %d\"", rc);
3548         } else {
3549                 retry_count = atoi(val);
3550         }
3551
3552         return build_global_yaml_entry(err_str, sizeof(err_str), seq_no,
3553                                        "retry_count", retry_count, show_rc,
3554                                        err_rc, l_errno);
3555 }
3556
3557 int lustre_lnet_calc_service_id(__u64 *service_id)
3558 {
3559         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3560         char val[LNET_MAX_STR_LEN];
3561         int service_port = -1, l_errno = 0;
3562
3563         rc = read_sysfs_file(o2ib_modparam_path, "service", val,
3564                              1, sizeof(val));
3565         if (rc) {
3566                 l_errno = errno;
3567                 fprintf(stderr, "error:\n    msg: \"cannot get service port: %s (%d)\"\n",
3568                         strerror(l_errno), -l_errno);
3569                 return rc;
3570         } else {
3571                 service_port = atoi(val);
3572         }
3573
3574         *service_id = htobe64(((__u64)RDMA_PS_TCP << 16) + service_port);
3575
3576         return LUSTRE_CFG_RC_NO_ERR;
3577 }
3578
3579 int show_recovery_queue(enum lnet_health_type type, char *name, int seq_no,
3580                         struct cYAML **show_rc, struct cYAML **err_rc)
3581 {
3582         struct lnet_ioctl_recovery_list nid_list;
3583         struct cYAML *root = NULL, *nids = NULL;
3584         int rc, i;
3585         char err_str[LNET_MAX_STR_LEN] = "failed to print recovery queue\n";
3586
3587         LIBCFS_IOC_INIT_V2(nid_list, rlst_hdr);
3588         nid_list.rlst_type = type;
3589
3590         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_RECOVERY_QUEUE, &nid_list);
3591         if (rc) {
3592                 rc = errno;
3593                 goto out;
3594         }
3595
3596         if (nid_list.rlst_num_nids == 0)
3597                 goto out;
3598
3599         root = cYAML_create_object(NULL, NULL);
3600         if (root == NULL)
3601                 goto out;
3602
3603         nids = cYAML_create_object(root, name);
3604         if (nids == NULL)
3605                 goto out;
3606
3607         rc = -EINVAL;
3608
3609         for (i = 0; i < nid_list.rlst_num_nids; i++) {
3610                 char nidenum[LNET_MAX_STR_LEN];
3611                 snprintf(nidenum, sizeof(nidenum), "nid-%d", i);
3612                 if (!cYAML_create_string(nids, nidenum,
3613                         libcfs_nid2str(nid_list.rlst_nid_array[i])))
3614                         goto out;
3615         }
3616
3617         snprintf(err_str, sizeof(err_str), "success\n");
3618
3619         rc = 0;
3620
3621 out:
3622         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR) {
3623                 cYAML_free_tree(root);
3624         } else if (show_rc != NULL && *show_rc != NULL) {
3625                 struct cYAML *show_node;
3626                 /* find the net node, if one doesn't exist
3627                  * then insert one.  Otherwise add to the one there
3628                  */
3629                 show_node = cYAML_get_object_item(*show_rc, name);
3630                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
3631                         cYAML_insert_child(show_node, nids);
3632                         free(nids);
3633                         free(root);
3634                 } else if (show_node == NULL) {
3635                         cYAML_insert_sibling((*show_rc)->cy_child,
3636                                                 nids);
3637                         free(root);
3638                 } else {
3639                         cYAML_free_tree(root);
3640                 }
3641         } else {
3642                 *show_rc = root;
3643         }
3644
3645         cYAML_build_error(rc, seq_no, SHOW_CMD, name, err_str, err_rc);
3646
3647         return rc;
3648 }
3649
3650 int lustre_lnet_show_local_ni_recovq(int seq_no, struct cYAML **show_rc,
3651                                      struct cYAML **err_rc)
3652 {
3653         return show_recovery_queue(LNET_HEALTH_TYPE_LOCAL_NI, "local NI recovery",
3654                                    seq_no, show_rc, err_rc);
3655 }
3656
3657 int lustre_lnet_show_peer_ni_recovq(int seq_no, struct cYAML **show_rc,
3658                                     struct cYAML **err_rc)
3659 {
3660         return show_recovery_queue(LNET_HEALTH_TYPE_PEER_NI, "peer NI recovery",
3661                                    seq_no, show_rc, err_rc);
3662 }
3663
3664 int lustre_lnet_show_response_tracking(int seq_no, struct cYAML **show_rc,
3665                                        struct cYAML **err_rc)
3666 {
3667         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3668         char val[LNET_MAX_STR_LEN];
3669         int rsp_tracking = -1, l_errno = 0;
3670         char err_str[LNET_MAX_STR_LEN] = "\"out of memory\"";
3671
3672         rc = read_sysfs_file(modparam_path, "lnet_response_tracking", val,
3673                              1, sizeof(val));
3674         if (rc) {
3675                 l_errno = -errno;
3676                 snprintf(err_str, sizeof(err_str),
3677                          "\"cannot get lnet_response_tracking value: %d\"", rc);
3678         } else {
3679                 rsp_tracking = atoi(val);
3680         }
3681
3682         return build_global_yaml_entry(err_str, sizeof(err_str), seq_no,
3683                                        "response_tracking", rsp_tracking,
3684                                        show_rc, err_rc, l_errno);
3685 }
3686
3687 int lustre_lnet_show_recovery_limit(int seq_no, struct cYAML **show_rc,
3688                                     struct cYAML **err_rc)
3689 {
3690         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3691         char val[LNET_MAX_STR_LEN];
3692         int recov_limit = -1, l_errno = 0;
3693         char err_str[LNET_MAX_STR_LEN];
3694
3695         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
3696
3697         rc = read_sysfs_file(modparam_path, "lnet_recovery_limit", val,
3698                              1, sizeof(val));
3699         if (rc) {
3700                 l_errno = -errno;
3701                 snprintf(err_str, sizeof(err_str),
3702                          "\"cannot get lnet_recovery_limit value: %d\"", rc);
3703         } else {
3704                 recov_limit = atoi(val);
3705         }
3706
3707         return build_global_yaml_entry(err_str, sizeof(err_str), seq_no,
3708                                        "recovery_limit", recov_limit,
3709                                        show_rc, err_rc, l_errno);
3710 }
3711
3712 int lustre_lnet_show_max_intf(int seq_no, struct cYAML **show_rc,
3713                               struct cYAML **err_rc)
3714 {
3715         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3716         char val[LNET_MAX_STR_LEN];
3717         int max_intf = -1, l_errno = 0;
3718         char err_str[LNET_MAX_STR_LEN] = "\"out of memory\"";
3719
3720         rc = read_sysfs_file(modparam_path, "lnet_interfaces_max", val,
3721                              1, sizeof(val));
3722         if (rc) {
3723                 l_errno = -errno;
3724                 snprintf(err_str, sizeof(err_str),
3725                          "\"cannot get max interfaces: %d\"", rc);
3726         } else {
3727                 max_intf = atoi(val);
3728         }
3729
3730         return build_global_yaml_entry(err_str, sizeof(err_str), seq_no,
3731                                        "max_interfaces", max_intf, show_rc,
3732                                        err_rc, l_errno);
3733 }
3734
3735 int lustre_lnet_show_discovery(int seq_no, struct cYAML **show_rc,
3736                                struct cYAML **err_rc)
3737 {
3738         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3739         char val[LNET_MAX_STR_LEN];
3740         int discovery = -1, l_errno = 0;
3741         char err_str[LNET_MAX_STR_LEN]  = "\"out of memory\"";
3742
3743         rc = read_sysfs_file(modparam_path, "lnet_peer_discovery_disabled", val,
3744                              1, sizeof(val));
3745         if (rc) {
3746                 l_errno = -errno;
3747                 snprintf(err_str, sizeof(err_str),
3748                          "\"cannot get discovery setting: %d\"", rc);
3749         } else {
3750                 /*
3751                  * The kernel stores a discovery disabled value. User space
3752                  * shows whether discovery is enabled. So the value must be
3753                  * inverted.
3754                  */
3755                 discovery = !atoi(val);
3756         }
3757
3758         return build_global_yaml_entry(err_str, sizeof(err_str), seq_no,
3759                                        "discovery", discovery, show_rc,
3760                                        err_rc, l_errno);
3761 }
3762
3763 int lustre_lnet_show_drop_asym_route(int seq_no, struct cYAML **show_rc,
3764                                      struct cYAML **err_rc)
3765 {
3766         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3767         char val[LNET_MAX_STR_LEN];
3768         int drop_asym_route = -1, l_errno = 0;
3769         char err_str[LNET_MAX_STR_LEN] = "\"out of memory\"";
3770
3771         rc = read_sysfs_file(modparam_path, "lnet_drop_asym_route", val,
3772                              1, sizeof(val));
3773         if (rc) {
3774                 l_errno = -errno;
3775                 snprintf(err_str, sizeof(err_str),
3776                          "\"cannot get drop asym route setting: %d\"", rc);
3777         } else {
3778                 drop_asym_route = atoi(val);
3779         }
3780
3781         return build_global_yaml_entry(err_str, sizeof(err_str), seq_no,
3782                                        "drop_asym_route", drop_asym_route,
3783                                        show_rc, err_rc, l_errno);
3784 }
3785
3786 int lustre_lnet_show_numa_range(int seq_no, struct cYAML **show_rc,
3787                                 struct cYAML **err_rc)
3788 {
3789         return ioctl_show_global_values(IOC_LIBCFS_GET_NUMA_RANGE, seq_no,
3790                                         "numa_range", show_rc, err_rc);
3791 }
3792
3793 int lustre_lnet_show_stats(int seq_no, struct cYAML **show_rc,
3794                            struct cYAML **err_rc)
3795 {
3796         struct lnet_ioctl_lnet_stats data;
3797         struct lnet_counters *cntrs;
3798         int rc;
3799         int l_errno;
3800         char err_str[LNET_MAX_STR_LEN] = "\"out of memory\"";
3801         struct cYAML *root = NULL, *stats = NULL;
3802
3803         LIBCFS_IOC_INIT_V2(data, st_hdr);
3804
3805         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_LNET_STATS, &data);
3806         if (rc) {
3807                 l_errno = errno;
3808                 snprintf(err_str,
3809                          sizeof(err_str),
3810                          "\"cannot get lnet statistics: %s\"",
3811                          strerror(l_errno));
3812                 rc = -l_errno;
3813                 goto out;
3814         }
3815
3816         rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3817
3818         cntrs = &data.st_cntrs;
3819
3820         root = cYAML_create_object(NULL, NULL);
3821         if (!root)
3822                 goto out;
3823
3824         stats = cYAML_create_object(root, "statistics");
3825         if (!stats)
3826                 goto out;
3827
3828         if (!cYAML_create_number(stats, "msgs_alloc",
3829                                  cntrs->lct_common.lcc_msgs_alloc))
3830                 goto out;
3831
3832         if (!cYAML_create_number(stats, "msgs_max",
3833                                  cntrs->lct_common.lcc_msgs_max))
3834                 goto out;
3835
3836         if (!cYAML_create_number(stats, "rst_alloc",
3837                                  cntrs->lct_health.lch_rst_alloc))
3838                 goto out;
3839
3840         if (!cYAML_create_number(stats, "errors",
3841                                  cntrs->lct_common.lcc_errors))
3842                 goto out;
3843
3844         if (!cYAML_create_number(stats, "send_count",
3845                                  cntrs->lct_common.lcc_send_count))
3846                 goto out;
3847
3848         if (!cYAML_create_number(stats, "resend_count",
3849                                  cntrs->lct_health.lch_resend_count))
3850                 goto out;
3851
3852         if (!cYAML_create_number(stats, "response_timeout_count",
3853                                  cntrs->lct_health.lch_response_timeout_count))
3854                 goto out;
3855
3856         if (!cYAML_create_number(stats, "local_interrupt_count",
3857                                  cntrs->lct_health.lch_local_interrupt_count))
3858                 goto out;
3859
3860         if (!cYAML_create_number(stats, "local_dropped_count",
3861                                  cntrs->lct_health.lch_local_dropped_count))
3862                 goto out;
3863
3864         if (!cYAML_create_number(stats, "local_aborted_count",
3865                                  cntrs->lct_health.lch_local_aborted_count))
3866                 goto out;
3867
3868         if (!cYAML_create_number(stats, "local_no_route_count",
3869                                  cntrs->lct_health.lch_local_no_route_count))
3870                 goto out;
3871
3872         if (!cYAML_create_number(stats, "local_timeout_count",
3873                                  cntrs->lct_health.lch_local_timeout_count))
3874                 goto out;
3875
3876         if (!cYAML_create_number(stats, "local_error_count",
3877                                  cntrs->lct_health.lch_local_error_count))
3878                 goto out;
3879
3880         if (!cYAML_create_number(stats, "remote_dropped_count",
3881                                  cntrs->lct_health.lch_remote_dropped_count))
3882                 goto out;
3883
3884         if (!cYAML_create_number(stats, "remote_error_count",
3885                                  cntrs->lct_health.lch_remote_error_count))
3886                 goto out;
3887
3888         if (!cYAML_create_number(stats, "remote_timeout_count",
3889                                  cntrs->lct_health.lch_remote_timeout_count))
3890                 goto out;
3891
3892         if (!cYAML_create_number(stats, "network_timeout_count",
3893                                  cntrs->lct_health.lch_network_timeout_count))
3894                 goto out;
3895
3896         if (!cYAML_create_number(stats, "recv_count",
3897                                  cntrs->lct_common.lcc_recv_count))
3898                 goto out;
3899
3900         if (!cYAML_create_number(stats, "route_count",
3901                                  cntrs->lct_common.lcc_route_count))
3902                 goto out;
3903
3904         if (!cYAML_create_number(stats, "drop_count",
3905                                  cntrs->lct_common.lcc_drop_count))
3906                 goto out;
3907
3908         if (!cYAML_create_number(stats, "send_length",
3909                                  cntrs->lct_common.lcc_send_length))
3910                 goto out;
3911
3912         if (!cYAML_create_number(stats, "recv_length",
3913                                  cntrs->lct_common.lcc_recv_length))
3914                 goto out;
3915
3916         if (!cYAML_create_number(stats, "route_length",
3917                                  cntrs->lct_common.lcc_route_length))
3918                 goto out;
3919
3920         if (!cYAML_create_number(stats, "drop_length",
3921                                  cntrs->lct_common.lcc_drop_length))
3922                 goto out;
3923
3924         if (!show_rc)
3925                 cYAML_print_tree(root);
3926
3927         snprintf(err_str, sizeof(err_str), "\"success\"");
3928         rc = LUSTRE_CFG_RC_NO_ERR;
3929 out:
3930         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR) {
3931                 cYAML_free_tree(root);
3932         } else if (show_rc != NULL && *show_rc != NULL) {
3933                 cYAML_insert_sibling((*show_rc)->cy_child,
3934                                         root->cy_child);
3935                 free(root);
3936         } else {
3937                 *show_rc = root;
3938         }
3939
3940         cYAML_build_error(rc, seq_no, SHOW_CMD, "statistics", err_str, err_rc);
3941
3942         return rc;
3943 }
3944
3945 typedef int (*cmd_handler_t)(struct cYAML *tree,
3946                              struct cYAML **show_rc,
3947                              struct cYAML **err_rc);
3948
3949 static int handle_yaml_config_route(struct cYAML *tree, struct cYAML **show_rc,
3950                                     struct cYAML **err_rc)
3951 {
3952         struct cYAML *net, *gw, *hop, *prio, *sen, *seq_no;
3953
3954         net = cYAML_get_object_item(tree, "net");
3955         gw = cYAML_get_object_item(tree, "gateway");
3956         hop = cYAML_get_object_item(tree, "hop");
3957         prio = cYAML_get_object_item(tree, "priority");
3958         sen = cYAML_get_object_item(tree, "health_sensitivity");
3959         seq_no = cYAML_get_object_item(tree, "seq_no");
3960
3961         return lustre_lnet_config_route((net) ? net->cy_valuestring : NULL,
3962                                         (gw) ? gw->cy_valuestring : NULL,
3963                                         (hop) ? hop->cy_valueint : -1,
3964                                         (prio) ? prio->cy_valueint : -1,
3965                                         (sen) ? sen->cy_valueint : -1,
3966                                         (seq_no) ? seq_no->cy_valueint : -1,
3967                                         err_rc);
3968 }
3969
3970 /*
3971  *    interfaces:
3972  *        0: <intf_name>['['<expr>']']
3973  *        1: <intf_name>['['<expr>']']
3974  */
3975 static int yaml_copy_intf_info(struct cYAML *intf_tree,
3976                                struct lnet_dlc_network_descr *nw_descr)
3977 {
3978         struct cYAML *child = NULL;
3979         int intf_num = 0, rc = LUSTRE_CFG_RC_NO_ERR;
3980         struct lnet_dlc_intf_descr *intf_descr, *tmp;
3981
3982         if (intf_tree == NULL || nw_descr == NULL)
3983                 return LUSTRE_CFG_RC_BAD_PARAM;
3984
3985         /* now grab all the interfaces and their cpts */
3986         child = intf_tree->cy_child;
3987         while (child != NULL) {
3988                 if (child->cy_valuestring == NULL) {
3989                         child = child->cy_next;
3990                         continue;
3991                 }
3992
3993                 if (strlen(child->cy_valuestring) >= LNET_MAX_STR_LEN)
3994                         goto failed;
3995
3996                 rc = lustre_lnet_add_intf_descr(&nw_descr->nw_intflist,
3997                                                 child->cy_valuestring,
3998                                                 strlen(child->cy_valuestring));
3999                 if (rc != LUSTRE_CFG_RC_NO_ERR)
4000                         goto failed;
4001
4002                 intf_num++;
4003                 child = child->cy_next;
4004         }
4005
4006         if (intf_num == 0)
4007                 return LUSTRE_CFG_RC_MISSING_PARAM;
4008
4009         return intf_num;
4010
4011 failed:
4012         list_for_each_entry_safe(intf_descr, tmp, &nw_descr->nw_intflist,
4013                                  intf_on_network) {
4014                 list_del(&intf_descr->intf_on_network);
4015                 free_intf_descr(intf_descr);
4016         }
4017
4018         return rc;
4019 }
4020
4021 static bool
4022 yaml_extract_cmn_tunables(struct cYAML *tree,
4023                           struct lnet_ioctl_config_lnd_cmn_tunables *tunables,
4024                           struct cfs_expr_list **global_cpts)
4025 {
4026         struct cYAML *tun, *item, *smp;
4027         int rc;
4028
4029         tun = cYAML_get_object_item(tree, "tunables");
4030         if (tun != NULL) {
4031                 item = cYAML_get_object_item(tun, "peer_timeout");
4032                 if (item != NULL)
4033                         tunables->lct_peer_timeout = item->cy_valueint;
4034                 item = cYAML_get_object_item(tun, "peer_credits");
4035                 if (item != NULL)
4036                         tunables->lct_peer_tx_credits = item->cy_valueint;
4037                 item = cYAML_get_object_item(tun, "peer_buffer_credits");
4038                 if (item != NULL)
4039                         tunables->lct_peer_rtr_credits = item->cy_valueint;
4040                 item = cYAML_get_object_item(tun, "credits");
4041                 if (item != NULL)
4042                         tunables->lct_max_tx_credits = item->cy_valueint;
4043                 smp = cYAML_get_object_item(tun, "CPT");
4044                 if (smp != NULL) {
4045                         rc = cfs_expr_list_parse(smp->cy_valuestring,
4046                                                  strlen(smp->cy_valuestring),
4047                                                  0, UINT_MAX, global_cpts);
4048                         if (rc != 0)
4049                                 *global_cpts = NULL;
4050                 }
4051
4052                 return true;
4053         }
4054
4055         return false;
4056 }
4057
4058 static bool
4059 yaml_extract_tunables(struct cYAML *tree,
4060                       struct lnet_ioctl_config_lnd_tunables *tunables,
4061                       struct cfs_expr_list **global_cpts,
4062                       __u32 net_type)
4063 {
4064         bool rc;
4065
4066         rc = yaml_extract_cmn_tunables(tree, &tunables->lt_cmn,
4067                                        global_cpts);
4068
4069         if (!rc)
4070                 return rc;
4071
4072         lustre_yaml_extract_lnd_tunables(tree, net_type,
4073                                          &tunables->lt_tun);
4074
4075         return rc;
4076 }
4077
4078 /*
4079  * net:
4080  *    - net type: <net>[<NUM>]
4081   *      local NI(s):
4082  *        - nid: <ip>@<net>[<NUM>]
4083  *          status: up
4084  *          interfaces:
4085  *               0: <intf_name>['['<expr>']']
4086  *               1: <intf_name>['['<expr>']']
4087  *        tunables:
4088  *               peer_timeout: <NUM>
4089  *               peer_credits: <NUM>
4090  *               peer_buffer_credits: <NUM>
4091  *               credits: <NUM>
4092 *         lnd tunables:
4093  *               peercredits_hiw: <NUM>
4094  *               map_on_demand: <NUM>
4095  *               concurrent_sends: <NUM>
4096  *               fmr_pool_size: <NUM>
4097  *               fmr_flush_trigger: <NUM>
4098  *               fmr_cache: <NUM>
4099  *
4100  * At least one interface is required. If no interfaces are provided the
4101  * network interface can not be configured.
4102  */
4103 static int handle_yaml_config_ni(struct cYAML *tree, struct cYAML **show_rc,
4104                                  struct cYAML **err_rc)
4105 {
4106         struct cYAML *net, *intf, *seq_no, *ip2net = NULL, *local_nis = NULL,
4107                      *item = NULL;
4108         int num_entries = 0, rc;
4109         struct lnet_dlc_network_descr nw_descr;
4110         struct cfs_expr_list *global_cpts = NULL;
4111         struct lnet_ioctl_config_lnd_tunables tunables;
4112         bool found = false;
4113
4114         memset(&tunables, 0, sizeof(tunables));
4115
4116         INIT_LIST_HEAD(&nw_descr.network_on_rule);
4117         INIT_LIST_HEAD(&nw_descr.nw_intflist);
4118
4119         ip2net = cYAML_get_object_item(tree, "ip2net");
4120         net = cYAML_get_object_item(tree, "net type");
4121         if (net)
4122                 nw_descr.nw_id = libcfs_str2net(net->cy_valuestring);
4123         else
4124                 nw_descr.nw_id = LOLND;
4125
4126         /*
4127          * if neither net nor ip2nets are present, then we can not
4128          * configure the network.
4129          */
4130         if (!net && !ip2net)
4131                 return LUSTRE_CFG_RC_MISSING_PARAM;
4132
4133         local_nis = cYAML_get_object_item(tree, "local NI(s)");
4134         if (local_nis == NULL)
4135                 return LUSTRE_CFG_RC_MISSING_PARAM;
4136
4137         if (!cYAML_is_sequence(local_nis))
4138                 return LUSTRE_CFG_RC_BAD_PARAM;
4139
4140         while (cYAML_get_next_seq_item(local_nis, &item) != NULL) {
4141                 intf = cYAML_get_object_item(item, "interfaces");
4142                 if (intf == NULL)
4143                         continue;
4144                 num_entries = yaml_copy_intf_info(intf, &nw_descr);
4145                 if (num_entries <= 0) {
4146                         cYAML_build_error(num_entries, -1, "ni", "add",
4147                                         "bad interface list",
4148                                         err_rc);
4149                         return LUSTRE_CFG_RC_BAD_PARAM;
4150                 }
4151         }
4152
4153         found = yaml_extract_tunables(tree, &tunables, &global_cpts,
4154                                       LNET_NETTYP(nw_descr.nw_id));
4155         seq_no = cYAML_get_object_item(tree, "seq_no");
4156
4157         rc = lustre_lnet_config_ni(&nw_descr,
4158                                    global_cpts,
4159                                    (ip2net) ? ip2net->cy_valuestring : NULL,
4160                                    (found) ? &tunables: NULL,
4161                                    (seq_no) ? seq_no->cy_valueint : -1,
4162                                    err_rc);
4163
4164         if (global_cpts != NULL)
4165                 cfs_expr_list_free(global_cpts);
4166
4167         return rc;
4168 }
4169
4170 /*
4171  * ip2nets:
4172  *  - net-spec: <tcp|o2ib|gni>[NUM]
4173  *    interfaces:
4174  *        0: <intf name>['['<expr>']']
4175  *        1: <intf name>['['<expr>']']
4176  *    ip-range:
4177  *        0: <expr.expr.expr.expr>
4178  *        1: <expr.expr.expr.expr>
4179  */
4180 static int handle_yaml_config_ip2nets(struct cYAML *tree,
4181                                       struct cYAML **show_rc,
4182                                       struct cYAML **err_rc)
4183 {
4184         struct cYAML *net, *ip_range, *item = NULL, *intf = NULL,
4185                      *seq_no = NULL;
4186         struct lustre_lnet_ip2nets ip2nets;
4187         struct lustre_lnet_ip_range_descr *ip_range_descr = NULL,
4188                                           *tmp = NULL;
4189         int rc = LUSTRE_CFG_RC_NO_ERR;
4190         struct cfs_expr_list *global_cpts = NULL;
4191         struct cfs_expr_list *el, *el_tmp;
4192         struct lnet_ioctl_config_lnd_tunables tunables;
4193         struct lnet_dlc_intf_descr *intf_descr, *intf_tmp;
4194         bool found = false;
4195
4196         memset(&tunables, 0, sizeof(tunables));
4197
4198         /* initialize all lists */
4199         INIT_LIST_HEAD(&ip2nets.ip2nets_ip_ranges);
4200         INIT_LIST_HEAD(&ip2nets.ip2nets_net.network_on_rule);
4201         INIT_LIST_HEAD(&ip2nets.ip2nets_net.nw_intflist);
4202
4203         net = cYAML_get_object_item(tree, "net-spec");
4204         if (net == NULL)
4205                 return LUSTRE_CFG_RC_BAD_PARAM;
4206
4207         if (net != NULL && net->cy_valuestring == NULL)
4208                 return LUSTRE_CFG_RC_BAD_PARAM;
4209
4210         /* assign the network id */
4211         ip2nets.ip2nets_net.nw_id = libcfs_str2net(net->cy_valuestring);
4212         if (ip2nets.ip2nets_net.nw_id == LNET_NID_ANY)
4213                 return LUSTRE_CFG_RC_BAD_PARAM;
4214
4215         seq_no = cYAML_get_object_item(tree, "seq_no");
4216
4217         intf = cYAML_get_object_item(tree, "interfaces");
4218         if (intf != NULL) {
4219                 rc = yaml_copy_intf_info(intf, &ip2nets.ip2nets_net);
4220                 if (rc <= 0)
4221                         return LUSTRE_CFG_RC_BAD_PARAM;
4222         }
4223
4224         ip_range = cYAML_get_object_item(tree, "ip-range");
4225         if (ip_range != NULL) {
4226                 item = ip_range->cy_child;
4227                 while (item != NULL) {
4228                         if (item->cy_valuestring == NULL) {
4229                                 item = item->cy_next;
4230                                 continue;
4231                         }
4232
4233                         rc = lustre_lnet_add_ip_range(&ip2nets.ip2nets_ip_ranges,
4234                                                       item->cy_valuestring);
4235
4236                         if (rc != LUSTRE_CFG_RC_NO_ERR)
4237                                 goto out;
4238
4239                         item = item->cy_next;
4240                 }
4241         }
4242
4243         found = yaml_extract_tunables(tree, &tunables, &global_cpts,
4244                                       LNET_NETTYP(ip2nets.ip2nets_net.nw_id));
4245
4246         rc = lustre_lnet_config_ip2nets(&ip2nets,
4247                         (found) ? &tunables : NULL,
4248                         global_cpts,
4249                         (seq_no) ? seq_no->cy_valueint : -1,
4250                         err_rc);
4251
4252         /*
4253          * don't stop because there was no match. Continue processing the
4254          * rest of the rules. If non-match then nothing is configured
4255          */
4256         if (rc == LUSTRE_CFG_RC_NO_MATCH)
4257                 rc = LUSTRE_CFG_RC_NO_ERR;
4258 out:
4259         list_for_each_entry_safe(intf_descr, intf_tmp,
4260                                  &ip2nets.ip2nets_net.nw_intflist,
4261                                  intf_on_network) {
4262                 list_del(&intf_descr->intf_on_network);
4263                 free_intf_descr(intf_descr);
4264         }
4265
4266         list_for_each_entry_safe(ip_range_descr, tmp,
4267                                  &ip2nets.ip2nets_ip_ranges,
4268                                  ipr_entry) {
4269                 list_del(&ip_range_descr->ipr_entry);
4270                 list_for_each_entry_safe(el, el_tmp, &ip_range_descr->ipr_expr,
4271                                          el_link) {
4272                         list_del(&el->el_link);
4273                         cfs_expr_list_free(el);
4274                 }
4275                 free(ip_range_descr);
4276         }
4277
4278         return rc;
4279 }
4280
4281 static int handle_yaml_del_ni(struct cYAML *tree, struct cYAML **show_rc,
4282                               struct cYAML **err_rc)
4283 {
4284         struct cYAML *net = NULL, *intf = NULL, *seq_no = NULL, *item = NULL,
4285                      *local_nis = NULL;
4286         int num_entries, rc;
4287         struct lnet_dlc_network_descr nw_descr;
4288
4289         INIT_LIST_HEAD(&nw_descr.network_on_rule);
4290         INIT_LIST_HEAD(&nw_descr.nw_intflist);
4291
4292         net = cYAML_get_object_item(tree, "net type");
4293         if (net != NULL)
4294                 nw_descr.nw_id = libcfs_str2net(net->cy_valuestring);
4295
4296         local_nis = cYAML_get_object_item(tree, "local NI(s)");
4297         if (local_nis == NULL)
4298                 return LUSTRE_CFG_RC_MISSING_PARAM;
4299
4300         if (!cYAML_is_sequence(local_nis))
4301                 return LUSTRE_CFG_RC_BAD_PARAM;
4302
4303         while (cYAML_get_next_seq_item(local_nis, &item) != NULL) {
4304                 intf = cYAML_get_object_item(item, "interfaces");
4305                 if (intf == NULL)
4306                         continue;
4307                 num_entries = yaml_copy_intf_info(intf, &nw_descr);
4308                 if (num_entries <= 0) {
4309                         cYAML_build_error(num_entries, -1, "ni", "add",
4310                                         "bad interface list",
4311                                         err_rc);
4312                         return LUSTRE_CFG_RC_BAD_PARAM;
4313                 }
4314         }
4315
4316         seq_no = cYAML_get_object_item(tree, "seq_no");
4317
4318         rc = lustre_lnet_del_ni((net) ? &nw_descr : NULL,
4319                                 (seq_no) ? seq_no->cy_valueint : -1,
4320                                 err_rc);
4321
4322         return rc;
4323 }
4324
4325 /* Create a nidstring parseable by the nidstrings library from the nid
4326  * information encoded in the CYAML structure.
4327  * NOTE: Caller must free memory allocated to nidstr
4328  */
4329 static int yaml_nids2nidstr(struct cYAML *nids_entry, char **nidstr,
4330                             char *prim_nid, int cmd)
4331 {
4332         int num_strs = 0, rc;
4333         size_t buf_size, buf_pos, nidstr_len = 0;
4334         char *buffer;
4335         struct cYAML *child = NULL, *entry = NULL;
4336
4337         if (cYAML_is_sequence(nids_entry)) {
4338                 while (cYAML_get_next_seq_item(nids_entry, &child)) {
4339                         entry = cYAML_get_object_item(child, "nid");
4340                         /* don't count an empty entry */
4341                         if (!entry || !entry->cy_valuestring)
4342                                 continue;
4343
4344                         if (prim_nid &&
4345                             (strcmp(entry->cy_valuestring, prim_nid) == 0)) {
4346                                 if (cmd == LNETCTL_DEL_CMD) {
4347                                         /*
4348                                          * primary nid is present in the list of
4349                                          * nids so that means we want to delete
4350                                          * the entire peer, so no need to go
4351                                          * further. Just delete the entire peer.
4352                                          */
4353                                         return LUSTRE_CFG_RC_NO_ERR;
4354                                 } else {
4355                                         continue;
4356                                 }
4357                         }
4358
4359                         /*
4360                          * + 1 for the space separating each string, and
4361                          * accounts for the terminating null char
4362                          */
4363                         nidstr_len += strlen(entry->cy_valuestring) + 1;
4364                         num_strs++;
4365                 }
4366         }
4367
4368         if (num_strs == 0 && !prim_nid)
4369                 return LUSTRE_CFG_RC_MISSING_PARAM;
4370         else if (num_strs == 0) /* Only the primary nid was given to add/del */
4371                 return LUSTRE_CFG_RC_NO_ERR;
4372
4373         buffer = malloc(nidstr_len);
4374         if (!buffer)
4375                 return LUSTRE_CFG_RC_OUT_OF_MEM;
4376
4377         /* now grab all the nids */
4378         rc = 0;
4379         buf_pos = 0;
4380         buf_size = nidstr_len;
4381         child = NULL;
4382         while (cYAML_get_next_seq_item(nids_entry, &child)) {
4383                 entry = cYAML_get_object_item(child, "nid");
4384                 if (!entry || !entry->cy_valuestring)
4385                         continue;
4386
4387                 if (prim_nid &&
4388                     (strcmp(entry->cy_valuestring, prim_nid) == 0))
4389                         continue;
4390
4391                 if (buf_pos) {
4392                         rc = snprintf(buffer + buf_pos, buf_size, " ");
4393                         buf_pos += (rc < buf_size) ? rc : buf_size;
4394                         buf_size = nidstr_len - buf_pos;
4395                 }
4396
4397                 rc = snprintf(buffer + buf_pos, buf_size, "%s",
4398                               entry->cy_valuestring);
4399                 buf_pos += (rc < buf_size) ? rc : buf_size;
4400                 buf_size = nidstr_len - buf_pos;
4401         }
4402
4403         *nidstr = buffer;
4404
4405         return LUSTRE_CFG_RC_NO_ERR;
4406 }
4407
4408 static int handle_yaml_peer_common(struct cYAML *tree, struct cYAML **show_rc,
4409                                    struct cYAML **err_rc, int cmd)
4410 {
4411         int rc, num_nids = 0, seqn;
4412         bool mr_value = false;
4413         char *nidstr = NULL, *prim_nidstr;
4414         char err_str[LNET_MAX_STR_LEN];
4415         struct cYAML *seq_no, *prim_nid, *mr, *peer_nis;
4416         lnet_nid_t lnet_nidlist[LNET_MAX_NIDS_PER_PEER];
4417         lnet_nid_t pnid = LNET_NID_ANY;
4418
4419         seq_no = cYAML_get_object_item(tree, "seq_no");
4420         seqn = seq_no ? seq_no->cy_valueint : -1;
4421
4422         prim_nid = cYAML_get_object_item(tree, "primary nid");
4423         peer_nis = cYAML_get_object_item(tree, "peer ni");
4424         if (!prim_nid) {
4425                 rc = LUSTRE_CFG_RC_BAD_PARAM;
4426                 snprintf(err_str, LNET_MAX_STR_LEN,
4427                          "\"primary nid\" must be specified");
4428                 goto failed;
4429         }
4430
4431         prim_nidstr = prim_nid->cy_valuestring;
4432
4433         /* if the provided primary NID is bad, no need to go any further */
4434         pnid = libcfs_str2nid(prim_nidstr);
4435         if (pnid == LNET_NID_ANY) {
4436                 rc = LUSTRE_CFG_RC_BAD_PARAM;
4437                 snprintf(err_str, LNET_MAX_STR_LEN,
4438                         "badly formatted primary NID: %s", prim_nidstr);
4439                 goto failed;
4440         }
4441
4442         rc = yaml_nids2nidstr(peer_nis, &nidstr, prim_nidstr, cmd);
4443         if (rc == LUSTRE_CFG_RC_MISSING_PARAM) {
4444                 snprintf(err_str, LNET_MAX_STR_LEN,
4445                          "No nids defined in YAML block");
4446                 goto failed;
4447         } else if (rc == LUSTRE_CFG_RC_OUT_OF_MEM) {
4448                 snprintf(err_str, LNET_MAX_STR_LEN, "out of memory");
4449                 goto failed;
4450         } else if (rc != LUSTRE_CFG_RC_NO_ERR) {
4451                 snprintf(err_str, LNET_MAX_STR_LEN,
4452                          "Unrecognized error %d", rc);
4453                 goto failed;
4454         }
4455
4456         num_nids = 0;
4457         if (nidstr) {
4458                 num_nids = lustre_lnet_parse_nidstr(nidstr, lnet_nidlist,
4459                                                     LNET_MAX_NIDS_PER_PEER,
4460                                                     err_str);
4461                 if (num_nids < 0) {
4462                         rc = num_nids;
4463                         goto failed;
4464                 }
4465         }
4466
4467         if (cmd == LNETCTL_ADD_CMD) {
4468                 mr = cYAML_get_object_item(tree, "Multi-Rail");
4469                 mr_value = true;
4470                 if (mr && mr->cy_valuestring) {
4471                         if (strcmp(mr->cy_valuestring, "False") == 0)
4472                                 mr_value = false;
4473                         else if (strcmp(mr->cy_valuestring, "True") != 0) {
4474                                 rc = LUSTRE_CFG_RC_BAD_PARAM;
4475                                 snprintf(err_str, LNET_MAX_STR_LEN,
4476                                          "Multi-Rail must be set to \"True\" or \"False\" found \"%s\"",
4477                                          mr->cy_valuestring);
4478                                 goto failed;
4479                         }
4480                 }
4481         }
4482
4483         rc = lustre_lnet_mod_peer_nidlist(pnid, lnet_nidlist, cmd,
4484                                           num_nids, mr_value, seqn,
4485                                           err_rc);
4486
4487 failed:
4488         if (nidstr)
4489                 free(nidstr);
4490
4491         if (rc != LUSTRE_CFG_RC_NO_ERR)
4492                 cYAML_build_error(rc, seqn, "peer",
4493                                   cmd == LNETCTL_ADD_CMD ? ADD_CMD : DEL_CMD,
4494                                   err_str, err_rc);
4495
4496         return rc;
4497 }
4498
4499 static int handle_yaml_config_peer(struct cYAML *tree, struct cYAML **show_rc,
4500                                    struct cYAML **err_rc)
4501 {
4502         return handle_yaml_peer_common(tree, show_rc, err_rc, LNETCTL_ADD_CMD);
4503 }
4504
4505 static int handle_yaml_del_peer(struct cYAML *tree, struct cYAML **show_rc,
4506                                 struct cYAML **err_rc)
4507 {
4508         return handle_yaml_peer_common(tree, show_rc, err_rc, LNETCTL_DEL_CMD);
4509 }
4510
4511 static int handle_yaml_config_buffers(struct cYAML *tree,
4512                                       struct cYAML **show_rc,
4513                                       struct cYAML **err_rc)
4514 {
4515         int rc;
4516         struct cYAML *tiny, *small, *large, *seq_no;
4517
4518         tiny = cYAML_get_object_item(tree, "tiny");
4519         small = cYAML_get_object_item(tree, "small");
4520         large = cYAML_get_object_item(tree, "large");
4521         seq_no = cYAML_get_object_item(tree, "seq_no");
4522
4523         rc = lustre_lnet_config_buffers((tiny) ? tiny->cy_valueint : -1,
4524                                         (small) ? small->cy_valueint : -1,
4525                                         (large) ? large->cy_valueint : -1,
4526                                         (seq_no) ? seq_no->cy_valueint : -1,
4527                                         err_rc);
4528
4529         return rc;
4530 }
4531
4532 static int handle_yaml_config_routing(struct cYAML *tree,
4533                                       struct cYAML **show_rc,
4534                                       struct cYAML **err_rc)
4535 {
4536         int rc = LUSTRE_CFG_RC_NO_ERR;
4537         struct cYAML *seq_no, *enable;
4538
4539         seq_no = cYAML_get_object_item(tree, "seq_no");
4540         enable = cYAML_get_object_item(tree, "enable");
4541
4542         if (enable) {
4543                 rc = lustre_lnet_enable_routing(enable->cy_valueint,
4544                                                 (seq_no) ?
4545                                                     seq_no->cy_valueint : -1,
4546                                                 err_rc);
4547         }
4548
4549         return rc;
4550 }
4551
4552 static int handle_yaml_del_route(struct cYAML *tree, struct cYAML **show_rc,
4553                                  struct cYAML **err_rc)
4554 {
4555         struct cYAML *net;
4556         struct cYAML *gw;
4557         struct cYAML *seq_no;
4558
4559         net = cYAML_get_object_item(tree, "net");
4560         gw = cYAML_get_object_item(tree, "gateway");
4561         seq_no = cYAML_get_object_item(tree, "seq_no");
4562
4563         return lustre_lnet_del_route((net) ? net->cy_valuestring : NULL,
4564                                      (gw) ? gw->cy_valuestring : NULL,
4565                                      (seq_no) ? seq_no->cy_valueint : -1,
4566                                      err_rc);
4567 }
4568
4569 static int handle_yaml_del_routing(struct cYAML *tree, struct cYAML **show_rc,
4570                                    struct cYAML **err_rc)
4571 {
4572         struct cYAML *seq_no;
4573
4574         seq_no = cYAML_get_object_item(tree, "seq_no");
4575
4576         return lustre_lnet_enable_routing(0, (seq_no) ?
4577                                                 seq_no->cy_valueint : -1,
4578                                         err_rc);
4579 }
4580
4581 static int handle_yaml_show_route(struct cYAML *tree, struct cYAML **show_rc,
4582                                   struct cYAML **err_rc)
4583 {
4584         struct cYAML *net;
4585         struct cYAML *gw;
4586         struct cYAML *hop;
4587         struct cYAML *prio;
4588         struct cYAML *detail;
4589         struct cYAML *seq_no;
4590
4591         net = cYAML_get_object_item(tree, "net");
4592         gw = cYAML_get_object_item(tree, "gateway");
4593         hop = cYAML_get_object_item(tree, "hop");
4594         prio = cYAML_get_object_item(tree, "priority");
4595         detail = cYAML_get_object_item(tree, "detail");
4596         seq_no = cYAML_get_object_item(tree, "seq_no");
4597
4598         return lustre_lnet_show_route((net) ? net->cy_valuestring : NULL,
4599                                       (gw) ? gw->cy_valuestring : NULL,
4600                                       (hop) ? hop->cy_valueint : -1,
4601                                       (prio) ? prio->cy_valueint : -1,
4602                                       (detail) ? detail->cy_valueint : 0,
4603                                       (seq_no) ? seq_no->cy_valueint : -1,
4604                                       show_rc, err_rc, false);
4605 }
4606
4607 static int handle_yaml_show_net(struct cYAML *tree, struct cYAML **show_rc,
4608                                 struct cYAML **err_rc)
4609 {
4610         struct cYAML *net, *detail, *seq_no;
4611
4612         net = cYAML_get_object_item(tree, "net");
4613         detail = cYAML_get_object_item(tree, "detail");
4614         seq_no = cYAML_get_object_item(tree, "seq_no");
4615
4616         return lustre_lnet_show_net((net) ? net->cy_valuestring : NULL,
4617                                     (detail) ? detail->cy_valueint : 0,
4618                                     (seq_no) ? seq_no->cy_valueint : -1,
4619                                     show_rc, err_rc, false);
4620 }
4621
4622 static int handle_yaml_show_routing(struct cYAML *tree, struct cYAML **show_rc,
4623                                     struct cYAML **err_rc)
4624 {
4625         struct cYAML *seq_no;
4626
4627         seq_no = cYAML_get_object_item(tree, "seq_no");
4628
4629         return lustre_lnet_show_routing((seq_no) ? seq_no->cy_valueint : -1,
4630                                         show_rc, err_rc, false);
4631 }
4632
4633 static int handle_yaml_show_peers(struct cYAML *tree, struct cYAML **show_rc,
4634                                   struct cYAML **err_rc)
4635 {
4636         struct cYAML *seq_no, *nid, *detail;
4637
4638         seq_no = cYAML_get_object_item(tree, "seq_no");
4639         detail = cYAML_get_object_item(tree, "detail");
4640         nid = cYAML_get_object_item(tree, "nid");
4641
4642         return lustre_lnet_show_peer((nid) ? nid->cy_valuestring : NULL,
4643                                      (detail) ? detail->cy_valueint : 0,
4644                                      (seq_no) ? seq_no->cy_valueint : -1,
4645                                      show_rc, err_rc, false);
4646 }
4647
4648 static int handle_yaml_show_stats(struct cYAML *tree, struct cYAML **show_rc,
4649                                   struct cYAML **err_rc)
4650 {
4651         struct cYAML *seq_no;
4652
4653         seq_no = cYAML_get_object_item(tree, "seq_no");
4654
4655         return lustre_lnet_show_stats((seq_no) ? seq_no->cy_valueint : -1,
4656                                       show_rc, err_rc);
4657 }
4658
4659 static int handle_yaml_config_numa(struct cYAML *tree, struct cYAML **show_rc,
4660                                   struct cYAML **err_rc)
4661 {
4662         struct cYAML *seq_no, *range;
4663
4664         seq_no = cYAML_get_object_item(tree, "seq_no");
4665         range = cYAML_get_object_item(tree, "range");
4666
4667         return lustre_lnet_config_numa_range(range ? range->cy_valueint : -1,
4668                                              seq_no ? seq_no->cy_valueint : -1,
4669                                              err_rc);
4670 }
4671
4672 static int handle_yaml_del_numa(struct cYAML *tree, struct cYAML **show_rc,
4673                                struct cYAML **err_rc)
4674 {
4675         struct cYAML *seq_no;
4676
4677         seq_no = cYAML_get_object_item(tree, "seq_no");
4678
4679         return lustre_lnet_config_numa_range(0, seq_no ? seq_no->cy_valueint : -1,
4680                                              err_rc);
4681 }
4682
4683 static int handle_yaml_show_numa(struct cYAML *tree, struct cYAML **show_rc,
4684                                 struct cYAML **err_rc)
4685 {
4686         struct cYAML *seq_no;
4687
4688         seq_no = cYAML_get_object_item(tree, "seq_no");
4689
4690         return lustre_lnet_show_numa_range(seq_no ? seq_no->cy_valueint : -1,
4691                                            show_rc, err_rc);
4692 }
4693
4694 static int handle_yaml_del_udsp(struct cYAML *tree, struct cYAML **show_rc,
4695                                 struct cYAML **err_rc)
4696 {
4697         struct cYAML *seq_no, *idx;
4698
4699         seq_no = cYAML_get_object_item(tree, "seq_no");
4700         idx = cYAML_get_object_item(tree, "idx");
4701
4702         return lustre_lnet_del_udsp(idx ? idx->cy_valueint : -1,
4703                                     seq_no ? seq_no->cy_valueint : -1,
4704                                     err_rc);
4705 }
4706
4707 static int handle_yaml_config_udsp(struct cYAML *tree, struct cYAML **show_rc,
4708                                    struct cYAML **err_rc)
4709 {
4710         struct cYAML *seq_no, *src, *rte, *dst, *prio, *idx;
4711         union lnet_udsp_action action;
4712
4713         seq_no = cYAML_get_object_item(tree, "seq_no");
4714         src = cYAML_get_object_item(tree, "src");
4715         rte = cYAML_get_object_item(tree, "rte");
4716         dst = cYAML_get_object_item(tree, "dst");
4717         prio = cYAML_get_object_item(tree, "priority");
4718         idx = cYAML_get_object_item(tree, "idx");
4719
4720         action.udsp_priority = prio ? prio->cy_valueint : -1;
4721
4722         return lustre_lnet_add_udsp(src ? src->cy_valuestring : NULL,
4723                                     dst ? dst->cy_valuestring : NULL,
4724                                     rte ? rte->cy_valuestring : NULL,
4725                                     prio ? "priority" : "",
4726                                     &action,
4727                                     idx ? idx->cy_valueint : -1,
4728                                     seq_no ? seq_no->cy_valueint : -1,
4729                                     err_rc);
4730 }
4731
4732 static int handle_yaml_show_udsp(struct cYAML *tree, struct cYAML **show_rc,
4733                                  struct cYAML **err_rc)
4734 {
4735         struct cYAML *seq_no;
4736         struct cYAML *idx;
4737
4738         seq_no = cYAML_get_object_item(tree, "seq_no");
4739         idx = cYAML_get_object_item(tree, "idx");
4740
4741         return lustre_lnet_show_udsp(idx ? idx->cy_valueint : -1,
4742                                      seq_no ? seq_no->cy_valueint : -1,
4743                                      show_rc, err_rc);
4744 }
4745
4746 static int handle_yaml_config_global_settings(struct cYAML *tree,
4747                                               struct cYAML **show_rc,
4748                                               struct cYAML **err_rc)
4749 {
4750         struct cYAML *max_intf, *numa, *discovery, *retry, *tto, *seq_no,
4751                      *sen, *recov, *rsen, *drop_asym_route, *rsp_tracking,
4752                      *recov_limit;
4753         int rc = 0;
4754
4755         seq_no = cYAML_get_object_item(tree, "seq_no");
4756         max_intf = cYAML_get_object_item(tree, "max_interfaces");
4757         if (!max_intf) /* try legacy name */
4758                 max_intf = cYAML_get_object_item(tree, "max_intf");
4759         if (max_intf)
4760                 rc = lustre_lnet_config_max_intf(max_intf->cy_valueint,
4761                                                  seq_no ? seq_no->cy_valueint
4762                                                         : -1,
4763                                                  err_rc);
4764
4765         numa = cYAML_get_object_item(tree, "numa_range");
4766         if (numa)
4767                 rc = lustre_lnet_config_numa_range(numa->cy_valueint,
4768                                                    seq_no ? seq_no->cy_valueint
4769                                                         : -1,
4770                                                    err_rc);
4771
4772         discovery = cYAML_get_object_item(tree, "discovery");
4773         if (discovery)
4774                 rc = lustre_lnet_config_discovery(discovery->cy_valueint,
4775                                                   seq_no ? seq_no->cy_valueint
4776                                                         : -1,
4777                                                   err_rc);
4778
4779         drop_asym_route = cYAML_get_object_item(tree, "drop_asym_route");
4780         if (drop_asym_route)
4781                 rc = lustre_lnet_config_drop_asym_route(
4782                         drop_asym_route->cy_valueint,
4783                         seq_no ? seq_no->cy_valueint : -1,
4784                         err_rc);
4785
4786         retry = cYAML_get_object_item(tree, "retry_count");
4787         if (retry)
4788                 rc = lustre_lnet_config_retry_count(retry->cy_valueint,
4789                                                     seq_no ? seq_no->cy_valueint
4790                                                         : -1,
4791                                                     err_rc);
4792
4793         tto = cYAML_get_object_item(tree, "transaction_timeout");
4794         if (tto)
4795                 rc = lustre_lnet_config_transaction_to(tto->cy_valueint,
4796                                                        seq_no ? seq_no->cy_valueint
4797                                                                 : -1,
4798                                                        err_rc);
4799
4800         sen = cYAML_get_object_item(tree, "health_sensitivity");
4801         if (sen)
4802                 rc = lustre_lnet_config_hsensitivity(sen->cy_valueint,
4803                                                      seq_no ? seq_no->cy_valueint
4804                                                         : -1,
4805                                                      err_rc);
4806
4807         recov = cYAML_get_object_item(tree, "recovery_interval");
4808         if (recov)
4809                 rc = lustre_lnet_config_recov_intrv(recov->cy_valueint,
4810                                                     seq_no ? seq_no->cy_valueint
4811                                                         : -1,
4812                                                     err_rc);
4813
4814         rsen = cYAML_get_object_item(tree, "router_sensitivity");
4815         if (rsen)
4816                 rc = lustre_lnet_config_rtr_sensitivity(rsen->cy_valueint,
4817                                                      seq_no ? seq_no->cy_valueint
4818                                                         : -1,
4819                                                      err_rc);
4820
4821         rsp_tracking = cYAML_get_object_item(tree, "response_tracking");
4822         if (rsp_tracking)
4823                 rc = lustre_lnet_config_response_tracking(rsp_tracking->cy_valueint,
4824                                                      seq_no ? seq_no->cy_valueint
4825                                                         : -1,
4826                                                      err_rc);
4827
4828         recov_limit = cYAML_get_object_item(tree, "recovery_limit");
4829         if (recov_limit)
4830                 rc = lustre_lnet_config_recovery_limit(recov_limit->cy_valueint,
4831                                                        seq_no ? seq_no->cy_valueint
4832                                                         : -1,
4833                                                        err_rc);
4834
4835         return rc;
4836 }
4837
4838 static int handle_yaml_del_global_settings(struct cYAML *tree,
4839                                            struct cYAML **show_rc,
4840                                            struct cYAML **err_rc)
4841 {
4842         struct cYAML *max_intf, *numa, *discovery, *seq_no, *drop_asym_route;
4843         int rc = 0;
4844
4845         seq_no = cYAML_get_object_item(tree, "seq_no");
4846         max_intf = cYAML_get_object_item(tree, "max_interfaces");
4847         if (!max_intf) /* try legacy name */
4848                 max_intf = cYAML_get_object_item(tree, "max_intf");
4849         if (max_intf)
4850                 rc = lustre_lnet_config_max_intf(LNET_INTERFACES_MAX_DEFAULT,
4851                                                  seq_no ? seq_no->cy_valueint
4852                                                         : -1,
4853                                                  err_rc);
4854
4855         numa = cYAML_get_object_item(tree, "numa_range");
4856         if (numa)
4857                 rc = lustre_lnet_config_numa_range(0,
4858                                                    seq_no ? seq_no->cy_valueint
4859                                                         : -1,
4860                                                    err_rc);
4861
4862         /* peer discovery is enabled by default */
4863         discovery = cYAML_get_object_item(tree, "discovery");
4864         if (discovery)
4865                 rc = lustre_lnet_config_discovery(1,
4866                                                   seq_no ? seq_no->cy_valueint
4867                                                         : -1,
4868                                                   err_rc);
4869
4870         /* asymmetrical route messages are accepted by default */
4871         drop_asym_route = cYAML_get_object_item(tree, "drop_asym_route");
4872         if (drop_asym_route)
4873                 rc = lustre_lnet_config_drop_asym_route(
4874                         0, seq_no ? seq_no->cy_valueint : -1, err_rc);
4875
4876         return rc;
4877 }
4878
4879 static int handle_yaml_show_global_settings(struct cYAML *tree,
4880                                             struct cYAML **show_rc,
4881                                             struct cYAML **err_rc)
4882 {
4883         struct cYAML *max_intf, *numa, *discovery, *retry, *tto, *seq_no,
4884                      *sen, *recov, *rsen, *drop_asym_route, *rsp_tracking,
4885                      *recov_limit;
4886         int rc = 0;
4887
4888         seq_no = cYAML_get_object_item(tree, "seq_no");
4889         max_intf = cYAML_get_object_item(tree, "max_interfaces");
4890         if (!max_intf) /* try legacy name */
4891                 max_intf = cYAML_get_object_item(tree, "max_intf");
4892         if (max_intf)
4893                 rc = lustre_lnet_show_max_intf(seq_no ? seq_no->cy_valueint
4894                                                         : -1,
4895                                                 show_rc, err_rc);
4896
4897         numa = cYAML_get_object_item(tree, "numa_range");
4898         if (numa)
4899                 rc = lustre_lnet_show_numa_range(seq_no ? seq_no->cy_valueint
4900                                                         : -1,
4901                                                  show_rc, err_rc);
4902
4903         discovery = cYAML_get_object_item(tree, "discovery");
4904         if (discovery)
4905                 rc = lustre_lnet_show_discovery(seq_no ? seq_no->cy_valueint
4906                                                         : -1,
4907                                                 show_rc, err_rc);
4908
4909         drop_asym_route = cYAML_get_object_item(tree, "drop_asym_route");
4910         if (drop_asym_route)
4911                 rc = lustre_lnet_show_drop_asym_route(
4912                         seq_no ? seq_no->cy_valueint : -1,
4913                         show_rc, err_rc);
4914
4915         retry = cYAML_get_object_item(tree, "retry_count");
4916         if (retry)
4917                 rc = lustre_lnet_show_retry_count(seq_no ? seq_no->cy_valueint
4918                                                         : -1,
4919                                                   show_rc, err_rc);
4920
4921         tto = cYAML_get_object_item(tree, "transaction_timeout");
4922         if (tto)
4923                 rc = lustre_lnet_show_transaction_to(seq_no ? seq_no->cy_valueint
4924                                                         : -1,
4925                                                      show_rc, err_rc);
4926
4927         sen = cYAML_get_object_item(tree, "health_sensitivity");
4928         if (sen)
4929                 rc = lustre_lnet_show_hsensitivity(seq_no ? seq_no->cy_valueint
4930                                                         : -1,
4931                                                      show_rc, err_rc);
4932
4933         recov = cYAML_get_object_item(tree, "recovery_interval");
4934         if (recov)
4935                 rc = lustre_lnet_show_recov_intrv(seq_no ? seq_no->cy_valueint
4936                                                         : -1,
4937                                                   show_rc, err_rc);
4938
4939         rsen = cYAML_get_object_item(tree, "router_sensitivity");
4940         if (rsen)
4941                 rc = lustre_lnet_show_hsensitivity(seq_no ? seq_no->cy_valueint
4942                                                         : -1,
4943                                                      show_rc, err_rc);
4944
4945         rsp_tracking = cYAML_get_object_item(tree, "response_tracking");
4946         if (rsp_tracking)
4947                 rc = lustre_lnet_show_response_tracking(seq_no ?
4948                                                         seq_no->cy_valueint :
4949                                                         -1,
4950                                                         show_rc, err_rc);
4951
4952         recov_limit = cYAML_get_object_item(tree, "recovery_limit");
4953         if (recov_limit)
4954                 rc = lustre_lnet_show_recovery_limit(seq_no ?
4955                                                      seq_no->cy_valueint :
4956                                                      -1,
4957                                                      show_rc, err_rc);
4958
4959         return rc;
4960 }
4961
4962 static int handle_yaml_ping(struct cYAML *tree, struct cYAML **show_rc,
4963                             struct cYAML **err_rc)
4964 {
4965         struct cYAML *seq_no, *nid, *timeout;
4966
4967         seq_no = cYAML_get_object_item(tree, "seq_no");
4968         nid = cYAML_get_object_item(tree, "primary nid");
4969         timeout = cYAML_get_object_item(tree, "timeout");
4970
4971         return lustre_lnet_ping_nid((nid) ? nid->cy_valuestring : NULL,
4972                                     (timeout) ? timeout->cy_valueint : 1000,
4973                                     (seq_no) ? seq_no->cy_valueint : -1,
4974                                     show_rc, err_rc);
4975 }
4976
4977 static int handle_yaml_discover(struct cYAML *tree, struct cYAML **show_rc,
4978                                 struct cYAML **err_rc)
4979 {
4980         struct cYAML *seq_no, *nid, *force;
4981
4982         seq_no = cYAML_get_object_item(tree, "seq_no");
4983         nid = cYAML_get_object_item(tree, "primary nid");
4984         force = cYAML_get_object_item(tree, "force");
4985
4986         return lustre_lnet_discover_nid((nid) ? nid->cy_valuestring : NULL,
4987                                         (force) ? force->cy_valueint : 0,
4988                                         (seq_no) ? seq_no->cy_valueint : -1,
4989                                         show_rc, err_rc);
4990 }
4991
4992 static int handle_yaml_no_op()
4993 {
4994         return LUSTRE_CFG_RC_NO_ERR;
4995 }
4996
4997 struct lookup_cmd_hdlr_tbl {
4998         char *name;
4999         cmd_handler_t cb;
5000 };
5001
5002 static struct lookup_cmd_hdlr_tbl lookup_config_tbl[] = {
5003         { .name = "route",      .cb = handle_yaml_config_route },
5004         { .name = "net",        .cb = handle_yaml_config_ni },
5005         { .name = "ip2nets",    .cb = handle_yaml_config_ip2nets },
5006         { .name = "peer",       .cb = handle_yaml_config_peer },
5007         { .name = "routing",    .cb = handle_yaml_config_routing },
5008         { .name = "buffers",    .cb = handle_yaml_config_buffers },
5009         { .name = "statistics", .cb = handle_yaml_no_op },
5010         { .name = "global",     .cb = handle_yaml_config_global_settings},
5011         { .name = "numa",       .cb = handle_yaml_config_numa },
5012         { .name = "ping",       .cb = handle_yaml_no_op },
5013         { .name = "discover",   .cb = handle_yaml_no_op },
5014         { .name = "udsp",       .cb = handle_yaml_config_udsp },
5015         { .name = NULL } };
5016
5017 static struct lookup_cmd_hdlr_tbl lookup_del_tbl[] = {
5018         { .name = "route",      .cb = handle_yaml_del_route },
5019         { .name = "net",        .cb = handle_yaml_del_ni },
5020         { .name = "ip2nets",    .cb = handle_yaml_no_op },
5021         { .name = "peer",       .cb = handle_yaml_del_peer },
5022         { .name = "routing",    .cb = handle_yaml_del_routing },
5023         { .name = "buffers",    .cb = handle_yaml_no_op },
5024         { .name = "statistics", .cb = handle_yaml_no_op },
5025         { .name = "global",     .cb = handle_yaml_del_global_settings},
5026         { .name = "numa",       .cb = handle_yaml_del_numa },
5027         { .name = "ping",       .cb = handle_yaml_no_op },
5028         { .name = "discover",   .cb = handle_yaml_no_op },
5029         { .name = "udsp",       .cb = handle_yaml_del_udsp },
5030         { .name = NULL } };
5031
5032 static struct lookup_cmd_hdlr_tbl lookup_show_tbl[] = {
5033         { .name = "route",      .cb = handle_yaml_show_route },
5034         { .name = "net",        .cb = handle_yaml_show_net },
5035         { .name = "peer",       .cb = handle_yaml_show_peers },
5036         { .name = "ip2nets",    .cb = handle_yaml_no_op },
5037         { .name = "routing",    .cb = handle_yaml_show_routing },
5038         { .name = "buffers",    .cb = handle_yaml_show_routing },
5039         { .name = "statistics", .cb = handle_yaml_show_stats },
5040         { .name = "global",     .cb = handle_yaml_show_global_settings},
5041         { .name = "numa",       .cb = handle_yaml_show_numa },
5042         { .name = "ping",       .cb = handle_yaml_no_op },
5043         { .name = "discover",   .cb = handle_yaml_no_op },
5044         { .name = "udsp",       .cb = handle_yaml_show_udsp },
5045         { .name = NULL } };
5046
5047 static struct lookup_cmd_hdlr_tbl lookup_exec_tbl[] = {
5048         { .name = "route",      .cb = handle_yaml_no_op },
5049         { .name = "net",        .cb = handle_yaml_no_op },
5050         { .name = "peer",       .cb = handle_yaml_no_op },
5051         { .name = "ip2nets",    .cb = handle_yaml_no_op },
5052         { .name = "routing",    .cb = handle_yaml_no_op },
5053         { .name = "buffers",    .cb = handle_yaml_no_op },
5054         { .name = "statistics", .cb = handle_yaml_no_op },
5055         { .name = "global",     .cb = handle_yaml_no_op },
5056         { .name = "numa",       .cb = handle_yaml_no_op },
5057         { .name = "ping",       .cb = handle_yaml_ping },
5058         { .name = "discover",   .cb = handle_yaml_discover },
5059         { .name = NULL } };
5060
5061 static cmd_handler_t lookup_fn(char *key,
5062                                struct lookup_cmd_hdlr_tbl *tbl)
5063 {
5064         int i;
5065         if (key == NULL)
5066                 return NULL;
5067
5068         for (i = 0; tbl[i].name != NULL; i++) {
5069                 if (strncmp(key, tbl[i].name, strlen(tbl[i].name)) == 0)
5070                         return tbl[i].cb;
5071         }
5072
5073         return NULL;
5074 }
5075
5076 static int lustre_yaml_cb_helper(char *f, struct lookup_cmd_hdlr_tbl *table,
5077                                  struct cYAML **show_rc, struct cYAML **err_rc)
5078 {
5079         struct cYAML *tree, *item = NULL, *head, *child;
5080         cmd_handler_t cb;
5081         char err_str[LNET_MAX_STR_LEN];
5082         int rc = LUSTRE_CFG_RC_NO_ERR, return_rc = LUSTRE_CFG_RC_NO_ERR;
5083
5084         tree = cYAML_build_tree(f, NULL, 0, err_rc, false);
5085         if (tree == NULL)
5086                 return LUSTRE_CFG_RC_BAD_PARAM;
5087
5088         child = tree->cy_child;
5089         while (child != NULL) {
5090                 cb = lookup_fn(child->cy_string, table);
5091                 if (cb == NULL) {
5092                         snprintf(err_str, sizeof(err_str),
5093                                 "\"call back for '%s' not found\"",
5094                                 child->cy_string);
5095                         cYAML_build_error(LUSTRE_CFG_RC_BAD_PARAM, -1,
5096                                         "yaml", "helper", err_str, err_rc);
5097                         goto out;
5098                 }
5099
5100                 if (cYAML_is_sequence(child)) {
5101                         while ((head = cYAML_get_next_seq_item(child, &item))
5102                                != NULL) {
5103                                 rc = cb(head, show_rc, err_rc);
5104                                 if (rc != LUSTRE_CFG_RC_NO_ERR)
5105                                         return_rc = rc;
5106                         }
5107                 } else {
5108                         rc = cb(child, show_rc, err_rc);
5109                         if (rc != LUSTRE_CFG_RC_NO_ERR)
5110                                 return_rc = rc;
5111                 }
5112                 item = NULL;
5113                 child = child->cy_next;
5114         }
5115
5116 out:
5117         cYAML_free_tree(tree);
5118
5119         return return_rc;
5120 }
5121
5122 int lustre_yaml_config(char *f, struct cYAML **err_rc)
5123 {
5124         return lustre_yaml_cb_helper(f, lookup_config_tbl,
5125                                      NULL, err_rc);
5126 }
5127
5128 int lustre_yaml_del(char *f, struct cYAML **err_rc)
5129 {
5130         return lustre_yaml_cb_helper(f, lookup_del_tbl,
5131                                      NULL, err_rc);
5132 }
5133
5134 int lustre_yaml_show(char *f, struct cYAML **show_rc, struct cYAML **err_rc)
5135 {
5136         return lustre_yaml_cb_helper(f, lookup_show_tbl,
5137                                      show_rc, err_rc);
5138 }
5139
5140 int lustre_yaml_exec(char *f, struct cYAML **show_rc, struct cYAML **err_rc)
5141 {
5142         return lustre_yaml_cb_helper(f, lookup_exec_tbl,
5143                                      show_rc, err_rc);
5144 }