lnet/utils/lnetconfig/liblnetconfig.c

   1 /*
   2  * LGPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU Lesser General Public License as
   8  * published by the Free Software Foundation; either version 2.1 of the
   9  * License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library. If not, see <http://www.gnu.org/licenses/>.
  18  *
  19  * LGPL HEADER END
  20  *
  21  * Copyright (c) 2014, 2017, Intel Corporation.
  22  *
  23  * Author:
  24  *   Amir Shehata <amir.shehata@intel.com>
  25  */
  26
  27 /*
  28  * There are two APIs:
  29  *  1. APIs that take the actual parameters expanded.  This is for other
  30  *  entities that would like to link against the library and call the APIs
  31  *  directly without having to form an intermediate representation.
  32  *  2. APIs that take a YAML file and parses out the information there and
  33  *  calls the APIs mentioned in 1
  34  */
  35
  36 #include <errno.h>
  37 #include <limits.h>
  38 #include <byteswap.h>
  39 #include <netdb.h>
  40 #include <stdio.h>
  41 #include <stdlib.h>
  42 #include <string.h>
  43 #include <unistd.h>
  44 #include <sys/ioctl.h>
  45 #include <net/if.h>
  46 #include <libcfs/util/ioctl.h>
  47 #include <linux/lnet/lnetctl.h>
  48 #include "liblnd.h"
  49 #include <sys/types.h>
  50 #include <sys/stat.h>
  51 #include <fcntl.h>
  52 #include <ifaddrs.h>
  53 #include "liblnetconfig.h"
  54
  55 #define CONFIG_CMD              "configure"
  56 #define UNCONFIG_CMD            "unconfigure"
  57 #define ADD_CMD                 "add"
  58 #define DEL_CMD                 "del"
  59 #define SHOW_CMD                "show"
  60 #define DBG_CMD                 "dbg"
  61 #define MANAGE_CMD              "manage"
  62
  63 #define modparam_path "/sys/module/lnet/parameters/"
  64 #define gni_nid_path "/proc/cray_xt/"
  65
  66 const char *gmsg_stat_names[] = {"sent_stats", "received_stats",
  67                                  "dropped_stats"};
  68
  69 /*
  70  * lustre_lnet_ip_range_descr
  71  *      Describes an IP range.
  72  *      Each octect is an expression
  73  */
  74 struct lustre_lnet_ip_range_descr {
  75         struct list_head ipr_entry;
  76         struct list_head ipr_expr;
  77 };
  78
  79 /*
  80  * lustre_lnet_ip2nets
  81  *      Describes an ip2nets rule. This can be on a list of rules.
  82  */
  83 struct lustre_lnet_ip2nets {
  84         struct lnet_dlc_network_descr ip2nets_net;
  85         struct list_head ip2nets_ip_ranges;
  86 };
  87
  88 int open_sysfs_file(const char *path, const char *attr, const int mode)
  89 {
  90         int fd;
  91         char filename[LNET_MAX_STR_LEN];
  92
  93         if (strlen(path) + strlen(attr) >= LNET_MAX_STR_LEN)
  94                 return -1;
  95
  96         snprintf(filename, sizeof(filename), "%s%s",
  97                  path, attr);
  98
  99         fd = open(filename, mode);
 100
 101         return fd;
 102 }
 103
 104 static int read_sysfs_file(const char *path, const char *attr,
 105                            void *val, const size_t size, const int nelem)
 106 {
 107         int fd;
 108         int rc = LUSTRE_CFG_RC_GENERIC_ERR;
 109
 110         fd = open_sysfs_file(path, attr, O_RDONLY);
 111         if (fd == -1)
 112                 return LUSTRE_CFG_RC_NO_MATCH;
 113
 114         if (read(fd, val, size * nelem) == -1)
 115                 goto close_fd;
 116
 117         rc = LUSTRE_CFG_RC_NO_ERR;
 118
 119 close_fd:
 120         close(fd);
 121         return rc;
 122 }
 123
 124 static int write_sysfs_file(const char *path, const char *attr,
 125                             void *val, const size_t size, const int nelem)
 126 {
 127         int fd;
 128         int rc = LUSTRE_CFG_RC_GENERIC_ERR;
 129
 130         fd = open_sysfs_file(path, attr, O_WRONLY | O_TRUNC);
 131         if (fd == -1)
 132                 return LUSTRE_CFG_RC_NO_MATCH;
 133
 134         if (write(fd, val, size * nelem) == -1)
 135                 goto close_fd;
 136
 137         rc = LUSTRE_CFG_RC_NO_ERR;
 138
 139 close_fd:
 140         close(fd);
 141         return rc;
 142 }
 143
 144 /*
 145  * free_intf_descr
 146  *      frees the memory allocated for an intf descriptor.
 147  */
 148 void free_intf_descr(struct lnet_dlc_intf_descr *intf_descr)
 149 {
 150         if (!intf_descr)
 151                 return;
 152
 153         if (intf_descr->cpt_expr != NULL)
 154                 cfs_expr_list_free(intf_descr->cpt_expr);
 155         free(intf_descr);
 156 }
 157
 158 /*
 159  * lustre_lnet_add_ip_range
 160  * Formatting:
 161  *      given a string of the format:
 162  *      <expr.expr.expr.expr> parse each expr into
 163  *      a lustre_lnet_ip_range_descr structure and insert on the list.
 164  *
 165  *      This function is called from
 166  *              YAML on each ip-range.
 167  *              As a result of lnetctl command
 168  *              When building a NID or P2P selection rules
 169  */
 170 int lustre_lnet_add_ip_range(struct list_head *list, char *str_ip_range)
 171 {
 172         struct lustre_lnet_ip_range_descr *ip_range;
 173         int rc;
 174
 175         ip_range = calloc(1, sizeof(*ip_range));
 176         if (ip_range == NULL)
 177                 return LUSTRE_CFG_RC_OUT_OF_MEM;
 178
 179         INIT_LIST_HEAD(&ip_range->ipr_entry);
 180         INIT_LIST_HEAD(&ip_range->ipr_expr);
 181
 182         rc = cfs_ip_addr_parse(str_ip_range, strlen(str_ip_range),
 183                                &ip_range->ipr_expr);
 184         if (rc != 0)
 185                 return LUSTRE_CFG_RC_BAD_PARAM;
 186
 187         list_add_tail(&ip_range->ipr_entry, list);
 188
 189         return LUSTRE_CFG_RC_NO_ERR;
 190 }
 191
 192 int lustre_lnet_add_intf_descr(struct list_head *list, char *intf, int len)
 193 {
 194         char *open_sq_bracket = NULL, *close_sq_bracket = NULL,
 195              *intf_name;
 196         struct lnet_dlc_intf_descr *intf_descr = NULL;
 197         int rc;
 198         char intf_string[LNET_MAX_STR_LEN];
 199
 200         if (len >= LNET_MAX_STR_LEN)
 201                 return LUSTRE_CFG_RC_BAD_PARAM;
 202
 203         strncpy(intf_string, intf, len);
 204         intf_string[len] = '\0';
 205
 206         intf_descr = calloc(1, sizeof(*intf_descr));
 207         if (intf_descr == NULL)
 208                 return LUSTRE_CFG_RC_OUT_OF_MEM;
 209
 210         INIT_LIST_HEAD(&intf_descr->intf_on_network);
 211
 212         intf_name = intf_string;
 213         open_sq_bracket = strchr(intf_string, '[');
 214         if (open_sq_bracket != NULL) {
 215                 close_sq_bracket = strchr(intf_string, ']');
 216                 if (close_sq_bracket == NULL) {
 217                         free(intf_descr);
 218                         return LUSTRE_CFG_RC_BAD_PARAM;
 219                 }
 220                 rc = cfs_expr_list_parse(open_sq_bracket,
 221                                          strlen(open_sq_bracket), 0, UINT_MAX,
 222                                          &intf_descr->cpt_expr);
 223                 if (rc < 0) {
 224                         free(intf_descr);
 225                         return LUSTRE_CFG_RC_BAD_PARAM;
 226                 }
 227                 strncpy(intf_descr->intf_name, intf_name,
 228                         open_sq_bracket - intf_name);
 229                 intf_descr->intf_name[open_sq_bracket - intf_name] = '\0';
 230         } else {
 231                 strcpy(intf_descr->intf_name, intf_name);
 232                 intf_descr->cpt_expr = NULL;
 233         }
 234
 235         list_add_tail(&intf_descr->intf_on_network, list);
 236
 237         return LUSTRE_CFG_RC_NO_ERR;
 238 }
 239
 240 void lustre_lnet_init_nw_descr(struct lnet_dlc_network_descr *nw_descr)
 241 {
 242         if (nw_descr != NULL) {
 243                 nw_descr->nw_id = 0;
 244                 INIT_LIST_HEAD(&nw_descr->network_on_rule);
 245                 INIT_LIST_HEAD(&nw_descr->nw_intflist);
 246         }
 247 }
 248
 249 int lustre_lnet_parse_nids(char *nids, char **array, int size,
 250                            char ***out_array)
 251 {
 252         int num_nids = 0;
 253         char *comma = nids, *cur, *entry;
 254         char **new_array;
 255         int i, len, start = 0, finish = 0;
 256
 257         if (nids == NULL || strlen(nids) == 0)
 258                 return size;
 259
 260         /* count the number or new nids, by counting the number of commas */
 261         while (comma) {
 262                 comma = strchr(comma, ',');
 263                 if (comma) {
 264                         comma++;
 265                         num_nids++;
 266                 } else {
 267                         num_nids++;
 268                 }
 269         }
 270
 271         /*
 272          * if the array is not NULL allocate a large enough array to house
 273          * the old and new entries
 274          */
 275         new_array = calloc(sizeof(char*),
 276                            (size > 0) ? size + num_nids : num_nids);
 277
 278         if (!new_array)
 279                 goto failed;
 280
 281         /* parse our the new nids and add them to the tail of the array */
 282         comma = nids;
 283         cur = nids;
 284         start = (size > 0) ? size: 0;
 285         finish = (size > 0) ? size + num_nids : num_nids;
 286         for (i = start; i < finish; i++) {
 287                 comma = strchr(comma, ',');
 288                 if (!comma)
 289                         /*
 290                          * the length of the string to be parsed out is
 291                          * from cur to end of string. So it's good enough
 292                          * to strlen(cur)
 293                          */
 294                         len = strlen(cur) + 1;
 295                 else
 296                         /* length of the string is comma - cur */
 297                         len = (comma - cur) + 1;
 298
 299                 entry = calloc(1, len);
 300                 if (!entry) {
 301                         finish = i > 0 ? i - 1: 0;
 302                         goto failed;
 303                 }
 304                 strncpy(entry, cur, len - 1);
 305                 entry[len] = '\0';
 306                 new_array[i] = entry;
 307                 if (comma) {
 308                         comma++;
 309                         cur = comma;
 310                 }
 311         }
 312
 313         /* add the old entries in the array and delete the old array*/
 314         for (i = 0; i < size; i++)
 315                 new_array[i] = array[i];
 316
 317         if (array)
 318                 free(array);
 319
 320         *out_array = new_array;
 321
 322         return finish;
 323
 324 failed:
 325         for (i = start; i < finish; i++)
 326                 free(new_array[i]);
 327         if (new_array)
 328                 free(new_array);
 329
 330         return size;
 331 }
 332
 333 /*
 334  * format expected:
 335  *      <intf>[<expr>], <intf>[<expr>],..
 336  */
 337 int lustre_lnet_parse_interfaces(char *intf_str,
 338                                  struct lnet_dlc_network_descr *nw_descr)
 339 {
 340         char *open_square;
 341         char *close_square;
 342         char *comma;
 343         char *cur = intf_str, *next = NULL;
 344         char *end = intf_str + strlen(intf_str);
 345         int rc, len;
 346         struct lnet_dlc_intf_descr *intf_descr, *tmp;
 347
 348         if (nw_descr == NULL)
 349                 return LUSTRE_CFG_RC_BAD_PARAM;
 350
 351         while (cur < end) {
 352                 open_square = strchr(cur, '[');
 353                 if (open_square != NULL) {
 354                         close_square = strchr(cur, ']');
 355                         if (close_square == NULL) {
 356                                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 357                                 goto failed;
 358                         }
 359
 360                         comma = strchr(cur, ',');
 361                         if (comma != NULL && comma > close_square) {
 362                                 next = comma + 1;
 363                                 len = next - close_square;
 364                         } else {
 365                                 len = strlen(cur);
 366                                 next = cur + len;
 367                         }
 368                 } else {
 369                         comma = strchr(cur, ',');
 370                         if (comma != NULL) {
 371                                 next = comma + 1;
 372                                 len = comma - cur;
 373                         } else {
 374                                 len = strlen(cur);
 375                                 next = cur + len;
 376                         }
 377                 }
 378
 379                 rc = lustre_lnet_add_intf_descr(&nw_descr->nw_intflist, cur, len);
 380                 if (rc != LUSTRE_CFG_RC_NO_ERR)
 381                         goto failed;
 382
 383                 cur = next;
 384         }
 385
 386         return LUSTRE_CFG_RC_NO_ERR;
 387
 388 failed:
 389         list_for_each_entry_safe(intf_descr, tmp, &nw_descr->nw_intflist,
 390                                  intf_on_network) {
 391                 list_del(&intf_descr->intf_on_network);
 392                 free_intf_descr(intf_descr);
 393         }
 394
 395         return rc;
 396 }
 397
 398 int lustre_lnet_config_lib_init(void)
 399 {
 400         return register_ioc_dev(LNET_DEV_ID, LNET_DEV_PATH);
 401 }
 402
 403 void lustre_lnet_config_lib_uninit(void)
 404 {
 405         unregister_ioc_dev(LNET_DEV_ID);
 406 }
 407
 408 int lustre_lnet_config_ni_system(bool up, bool load_ni_from_mod,
 409                                  int seq_no, struct cYAML **err_rc)
 410 {
 411         struct libcfs_ioctl_data data;
 412         unsigned int opc;
 413         int rc;
 414         char err_str[LNET_MAX_STR_LEN];
 415
 416         snprintf(err_str, sizeof(err_str), "\"Success\"");
 417
 418         LIBCFS_IOC_INIT(data);
 419
 420         /* Reverse logic is used here in order not to change
 421          * the lctl utility */
 422         data.ioc_flags = load_ni_from_mod ? 0 : 1;
 423
 424         opc = up ? IOC_LIBCFS_CONFIGURE : IOC_LIBCFS_UNCONFIGURE;
 425
 426         rc = l_ioctl(LNET_DEV_ID, opc, &data);
 427         if (rc != 0) {
 428                 snprintf(err_str,
 429                         sizeof(err_str),
 430                         "\"LNet %s error: %s\"", (up) ? "configure" :
 431                         "unconfigure", strerror(errno));
 432                 rc = -errno;
 433         }
 434
 435         cYAML_build_error(rc, seq_no, (up) ? CONFIG_CMD : UNCONFIG_CMD,
 436                           "lnet", err_str, err_rc);
 437
 438         return rc;
 439 }
 440
 441 static lnet_nid_t *allocate_create_nid_array(char **nids, __u32 num_nids,
 442                                              char *err_str)
 443 {
 444         lnet_nid_t *array = NULL;
 445         __u32 i;
 446
 447         if (!nids || num_nids == 0) {
 448                 snprintf(err_str, LNET_MAX_STR_LEN, "no NIDs to add");
 449                 return NULL;
 450         }
 451
 452         array = calloc(sizeof(*array) * num_nids, 1);
 453         if (array == NULL) {
 454                 snprintf(err_str, LNET_MAX_STR_LEN, "out of memory");
 455                 return NULL;
 456         }
 457
 458         for (i = 0; i < num_nids; i++) {
 459                 array[i] = libcfs_str2nid(nids[i]);
 460                 if (array[i] == LNET_NID_ANY) {
 461                         free(array);
 462                         snprintf(err_str, LNET_MAX_STR_LEN,
 463                                  "bad NID: '%s'",
 464                                  nids[i]);
 465                         return NULL;
 466                 }
 467         }
 468
 469         return array;
 470 }
 471
 472 static int dispatch_peer_ni_cmd(lnet_nid_t pnid, lnet_nid_t nid, __u32 cmd,
 473                                 struct lnet_ioctl_peer_cfg *data,
 474                                 char *err_str, char *cmd_str)
 475 {
 476         int rc;
 477
 478         data->prcfg_prim_nid = pnid;
 479         data->prcfg_cfg_nid = nid;
 480
 481         rc = l_ioctl(LNET_DEV_ID, cmd, data);
 482         if (rc != 0) {
 483                 rc = -errno;
 484                 snprintf(err_str,
 485                         LNET_MAX_STR_LEN,
 486                         "\"cannot %s peer ni: %s\"",
 487                         (cmd_str) ? cmd_str : "add", strerror(errno));
 488         }
 489
 490         return rc;
 491 }
 492
 493 static int infra_ping_nid(char *ping_nids, char *oper, int param, int ioc_call,
 494                           int seq_no, struct cYAML **show_rc,
 495                           struct cYAML **err_rc)
 496 {
 497         void *data = NULL;
 498         struct lnet_ioctl_ping_data ping;
 499         struct cYAML *root = NULL, *ping_node = NULL, *item = NULL,
 500                      *first_seq = NULL, *tmp = NULL, *peer_ni = NULL;
 501         struct lnet_process_id id;
 502         char err_str[LNET_MAX_STR_LEN] = {0};
 503         char *sep, *token, *end;
 504         char buf[6];
 505         size_t len;
 506         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
 507         int i;
 508         bool flag = false;
 509
 510         len = (sizeof(struct lnet_process_id) * LNET_INTERFACES_MAX_DEFAULT);
 511
 512         data = calloc(1, len);
 513         if (data == NULL)
 514                 goto out;
 515
 516         /* create struct cYAML root object */
 517         root = cYAML_create_object(NULL, NULL);
 518         if (root == NULL)
 519                 goto out;
 520
 521         ping_node = cYAML_create_seq(root, oper);
 522         if (ping_node == NULL)
 523                 goto out;
 524
 525         /* tokenise each nid in string ping_nids */
 526         token = strtok(ping_nids, ",");
 527
 528         do {
 529                 item = cYAML_create_seq_item(ping_node);
 530                 if (item == NULL)
 531                         goto out;
 532
 533                 if (first_seq == NULL)
 534                         first_seq = item;
 535
 536                 /* check if '-' is a part of NID, token */
 537                 sep = strchr(token, '-');
 538                 if (sep == NULL) {
 539                         id.pid = LNET_PID_ANY;
 540                         /* if no net is specified, libcfs_str2nid() will assume tcp */
 541                         id.nid = libcfs_str2nid(token);
 542                         if (id.nid == LNET_NID_ANY) {
 543                                 snprintf(err_str, sizeof(err_str),
 544                                          "\"cannot parse NID '%s'\"",
 545                                          token);
 546                                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 547                                 cYAML_build_error(rc, seq_no, MANAGE_CMD,
 548                                                   oper, err_str, err_rc);
 549                                 continue;
 550                         }
 551                 } else {
 552                         if (token[0] == 'u' || token[0] == 'U')
 553                                 id.pid = (strtoul(&token[1], &end, 0) |
 554                                           (LNET_PID_USERFLAG));
 555                         else
 556                                 id.pid = strtoul(token, &end, 0);
 557
 558                         /* assuming '-' is part of hostname */
 559                         if (end != sep) {
 560                                 id.pid = LNET_PID_ANY;
 561                                 id.nid = libcfs_str2nid(token);
 562                                 if (id.nid == LNET_NID_ANY) {
 563                                         snprintf(err_str, sizeof(err_str),
 564                                                  "\"cannot parse NID '%s'\"",
 565                                                  token);
 566                                         rc = LUSTRE_CFG_RC_BAD_PARAM;
 567                                         cYAML_build_error(rc, seq_no, MANAGE_CMD,
 568                                                           oper, err_str,
 569                                                           err_rc);
 570                                         continue;
 571                                 }
 572                         } else {
 573                                 id.nid = libcfs_str2nid(sep + 1);
 574                                 if (id.nid == LNET_NID_ANY) {
 575                                         snprintf(err_str, sizeof(err_str),
 576                                                  "\"cannot parse NID '%s'\"",
 577                                                  token);
 578                                         rc = LUSTRE_CFG_RC_BAD_PARAM;
 579                                         cYAML_build_error(rc, seq_no, MANAGE_CMD,
 580                                                           oper, err_str,
 581                                                           err_rc);
 582                                         continue;
 583                                 }
 584                         }
 585                 }
 586                 LIBCFS_IOC_INIT_V2(ping, ping_hdr);
 587                 ping.ping_hdr.ioc_len = sizeof(ping);
 588                 ping.ping_id          = id;
 589                 ping.op_param         = param;
 590                 ping.ping_count       = LNET_INTERFACES_MAX_DEFAULT;
 591                 ping.ping_buf         = data;
 592
 593                 rc = l_ioctl(LNET_DEV_ID, ioc_call, &ping);
 594                 if (rc != 0) {
 595                         snprintf(err_str,
 596                                  sizeof(err_str), "failed to %s %s: %s\n", oper,
 597                                  id.pid == LNET_PID_ANY ?
 598                                  libcfs_nid2str(id.nid) :
 599                                  libcfs_id2str(id), strerror(errno));
 600                         rc = LUSTRE_CFG_RC_BAD_PARAM;
 601                         cYAML_build_error(rc, seq_no, MANAGE_CMD,
 602                                           oper, err_str, err_rc);
 603                         continue;
 604                 }
 605
 606                 if (cYAML_create_string(item, "primary nid",
 607                                         libcfs_nid2str(ping.ping_id.nid)) == NULL)
 608                         goto out;
 609
 610                 if (cYAML_create_string(item, "Multi-Rail", ping.mr_info ?
 611                                         "True" : "False") == NULL)
 612                         goto out;
 613
 614                 tmp = cYAML_create_seq(item, "peer ni");
 615                 if (tmp == NULL)
 616                         goto out;
 617
 618                 for (i = 0; i < ping.ping_count; i++) {
 619                         if (!strcmp(libcfs_nid2str(ping.ping_buf[i].nid),
 620                                     "0@lo"))
 621                                 continue;
 622                         peer_ni = cYAML_create_seq_item(tmp);
 623                         if (peer_ni == NULL)
 624                                 goto out;
 625                         memset(buf, 0, sizeof buf);
 626                         snprintf(buf, sizeof buf, "nid");
 627                         if (cYAML_create_string(peer_ni, buf,
 628                                                 libcfs_nid2str(ping.ping_buf[i].nid)) == NULL)
 629                                 goto out;
 630                 }
 631
 632                 flag = true;
 633
 634         } while ((token = strtok(NULL, ",")) != NULL);
 635
 636         if (flag)
 637                 rc = LUSTRE_CFG_RC_NO_ERR;
 638
 639 out:
 640         if (data)
 641                 free(data);
 642         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR) {
 643                 cYAML_free_tree(root);
 644         } else if (show_rc != NULL && *show_rc != NULL) {
 645                 struct cYAML *show_node;
 646                 show_node = cYAML_get_object_item(*show_rc, oper);
 647                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
 648                         cYAML_insert_child(show_node, first_seq);
 649                         free(ping_node);
 650                         free(root);
 651                 } else if (show_node == NULL) {
 652                         cYAML_insert_sibling((*show_rc)->cy_child,
 653                                              ping_node);
 654                         free(root);
 655                 } else {
 656                         cYAML_free_tree(root);
 657                 }
 658         } else {
 659                 *show_rc = root;
 660         }
 661
 662         return rc;
 663 }
 664
 665 int lustre_lnet_ping_nid(char *ping_nids, int timeout, int seq_no,
 666                          struct cYAML **show_rc, struct cYAML **err_rc)
 667 {
 668         int rc;
 669
 670         rc = infra_ping_nid(ping_nids, "ping", timeout, IOC_LIBCFS_PING_PEER,
 671                             seq_no, show_rc, err_rc);
 672         return rc;
 673 }
 674
 675 int lustre_lnet_discover_nid(char *ping_nids, int force, int seq_no,
 676                          struct cYAML **show_rc, struct cYAML **err_rc)
 677 {
 678         int rc;
 679
 680         rc = infra_ping_nid(ping_nids, "discover", force, IOC_LIBCFS_DISCOVER,
 681                             seq_no, show_rc, err_rc);
 682         return rc;
 683 }
 684
 685 int lustre_lnet_config_peer_nid(char *pnid, char **nid, int num_nids,
 686                                 bool mr, int seq_no, struct cYAML **err_rc)
 687 {
 688         struct lnet_ioctl_peer_cfg data;
 689         lnet_nid_t prim_nid = LNET_NID_ANY;
 690         int rc = LUSTRE_CFG_RC_NO_ERR;
 691         int idx = 0;
 692         bool nid0_used = false;
 693         char err_str[LNET_MAX_STR_LEN] = {0};
 694         lnet_nid_t *nids = allocate_create_nid_array(nid, num_nids, err_str);
 695
 696         if (pnid) {
 697                 prim_nid = libcfs_str2nid(pnid);
 698                 if (prim_nid == LNET_NID_ANY) {
 699                         snprintf(err_str, sizeof(err_str),
 700                                  "bad key NID: '%s'",
 701                                  pnid);
 702                         rc = LUSTRE_CFG_RC_MISSING_PARAM;
 703                         goto out;
 704                 }
 705         } else if (!nids || nids[0] == LNET_NID_ANY) {
 706                 snprintf(err_str, sizeof(err_str),
 707                          "no NIDs provided for configuration");
 708                 rc = LUSTRE_CFG_RC_MISSING_PARAM;
 709                 goto out;
 710         } else {
 711                 prim_nid = LNET_NID_ANY;
 712         }
 713
 714         snprintf(err_str, sizeof(err_str), "\"Success\"");
 715
 716         LIBCFS_IOC_INIT_V2(data, prcfg_hdr);
 717         data.prcfg_mr = mr;
 718
 719         /*
 720          * if prim_nid is not specified use the first nid in the list of
 721          * nids provided as the prim_nid. NOTE: on entering 'if' we must
 722          * have at least 1 NID
 723          */
 724         if (prim_nid == LNET_NID_ANY) {
 725                 nid0_used = true;
 726                 prim_nid = nids[0];
 727         }
 728
 729         /* Create the prim_nid first */
 730         rc = dispatch_peer_ni_cmd(prim_nid, LNET_NID_ANY,
 731                                   IOC_LIBCFS_ADD_PEER_NI,
 732                                   &data, err_str, "add");
 733
 734         if (rc != 0)
 735                 goto out;
 736
 737         /* add the rest of the nids to the key nid if any are available */
 738         for (idx = nid0_used ? 1 : 0 ; nids && idx < num_nids; idx++) {
 739                 /*
 740                  * If prim_nid is not provided then the first nid in the
 741                  * list becomes the prim_nid. First time round the loop use
 742                  * LNET_NID_ANY for the first parameter, then use nid[0]
 743                  * as the key nid after wards
 744                  */
 745                 rc = dispatch_peer_ni_cmd(prim_nid, nids[idx],
 746                                           IOC_LIBCFS_ADD_PEER_NI, &data,
 747                                           err_str, "add");
 748
 749                 if (rc != 0)
 750                         goto out;
 751         }
 752
 753 out:
 754         if (nids != NULL)
 755                 free(nids);
 756         cYAML_build_error(rc, seq_no, ADD_CMD, "peer_ni", err_str, err_rc);
 757         return rc;
 758 }
 759
 760 int lustre_lnet_del_peer_nid(char *pnid, char **nid, int num_nids,
 761                              int seq_no, struct cYAML **err_rc)
 762 {
 763         struct lnet_ioctl_peer_cfg data;
 764         lnet_nid_t prim_nid;
 765         int rc = LUSTRE_CFG_RC_NO_ERR;
 766         int idx = 0;
 767         char err_str[LNET_MAX_STR_LEN] = {0};
 768         lnet_nid_t *nids = allocate_create_nid_array(nid, num_nids, err_str);
 769
 770         if (pnid == NULL) {
 771                 snprintf(err_str, sizeof(err_str),
 772                          "\"Primary nid is not provided\"");
 773                 rc = LUSTRE_CFG_RC_MISSING_PARAM;
 774                 goto out;
 775         } else {
 776                 prim_nid = libcfs_str2nid(pnid);
 777                 if (prim_nid == LNET_NID_ANY) {
 778                         rc = LUSTRE_CFG_RC_BAD_PARAM;
 779                         snprintf(err_str, sizeof(err_str),
 780                                  "bad key NID: '%s'",
 781                                  pnid);
 782                         goto out;
 783                 }
 784         }
 785
 786         snprintf(err_str, sizeof(err_str), "\"Success\"");
 787
 788         LIBCFS_IOC_INIT_V2(data, prcfg_hdr);
 789         if (!nids || nids[0] == LNET_NID_ANY) {
 790                 rc = dispatch_peer_ni_cmd(prim_nid, LNET_NID_ANY,
 791                                           IOC_LIBCFS_DEL_PEER_NI,
 792                                           &data, err_str, "del");
 793                 goto out;
 794         }
 795
 796         for (idx = 0; nids && idx < num_nids; idx++) {
 797                 rc = dispatch_peer_ni_cmd(prim_nid, nids[idx],
 798                                           IOC_LIBCFS_DEL_PEER_NI, &data,
 799                                           err_str, "del");
 800
 801                 if (rc != 0)
 802                         goto out;
 803         }
 804
 805 out:
 806         if (nids != NULL)
 807                 free(nids);
 808         cYAML_build_error(rc, seq_no, DEL_CMD, "peer_ni", err_str, err_rc);
 809         return rc;
 810 }
 811
 812 int lustre_lnet_config_route(char *nw, char *gw, int hops, int prio,
 813                              int seq_no, struct cYAML **err_rc)
 814 {
 815         struct lnet_ioctl_config_data data;
 816         lnet_nid_t gateway_nid;
 817         int rc = LUSTRE_CFG_RC_NO_ERR;
 818         __u32 net = LNET_NIDNET(LNET_NID_ANY);
 819         char err_str[LNET_MAX_STR_LEN];
 820
 821         snprintf(err_str, sizeof(err_str), "\"Success\"");
 822
 823         if (nw == NULL || gw == NULL) {
 824                 snprintf(err_str,
 825                          sizeof(err_str),
 826                          "\"missing mandatory parameter in route config:'%s'\"",
 827                          (nw == NULL && gw == NULL) ? "network, gateway" :
 828                          (nw == NULL) ? "network" : "gateway");
 829                 rc = LUSTRE_CFG_RC_MISSING_PARAM;
 830                 goto out;
 831         }
 832
 833         net = libcfs_str2net(nw);
 834         if (net == LNET_NIDNET(LNET_NID_ANY)) {
 835                 snprintf(err_str,
 836                          sizeof(err_str),
 837                          "\"cannot parse net %s\"", nw);
 838                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 839                 goto out;
 840         }
 841
 842         gateway_nid = libcfs_str2nid(gw);
 843         if (gateway_nid == LNET_NID_ANY) {
 844                 snprintf(err_str,
 845                         sizeof(err_str),
 846                         "\"cannot parse gateway NID '%s'\"", gw);
 847                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 848                 goto out;
 849         }
 850
 851         if (hops == -1) {
 852                 /* hops is undefined */
 853                 hops = LNET_UNDEFINED_HOPS;
 854         } else if (hops < 1 || hops > 255) {
 855                 snprintf(err_str,
 856                         sizeof(err_str),
 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,
 867                          sizeof(err_str),
 868                         "\"invalid priority %d, must be greater than 0\"",
 869                         prio);
 870                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
 871                 goto out;
 872         }
 873
 874         LIBCFS_IOC_INIT_V2(data, cfg_hdr);
 875         data.cfg_net = net;
 876         data.cfg_config_u.cfg_route.rtr_hop = hops;
 877         data.cfg_config_u.cfg_route.rtr_priority = prio;
 878         data.cfg_nid = gateway_nid;
 879
 880         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_ADD_ROUTE, &data);
 881         if (rc != 0) {
 882                 rc = -errno;
 883                 snprintf(err_str,
 884                          sizeof(err_str),
 885                          "\"cannot add route: %s\"", strerror(errno));
 886                 goto out;
 887         }
 888
 889 out:
 890         cYAML_build_error(rc, seq_no, ADD_CMD, "route", err_str, err_rc);
 891
 892         return rc;
 893 }
 894
 895 int lustre_lnet_del_route(char *nw, char *gw,
 896                           int seq_no, struct cYAML **err_rc)
 897 {
 898         struct lnet_ioctl_config_data data;
 899         lnet_nid_t gateway_nid;
 900         int rc = LUSTRE_CFG_RC_NO_ERR;
 901         __u32 net = LNET_NIDNET(LNET_NID_ANY);
 902         char err_str[LNET_MAX_STR_LEN];
 903
 904         snprintf(err_str, sizeof(err_str), "\"Success\"");
 905
 906         if (nw == NULL || gw == NULL) {
 907                 snprintf(err_str,
 908                          sizeof(err_str),
 909                          "\"missing mandatory parameter in route delete: '%s'\"",
 910                          (nw == NULL && gw == NULL) ? "network, gateway" :
 911                          (nw == NULL) ? "network" : "gateway");
 912                 rc = LUSTRE_CFG_RC_MISSING_PARAM;
 913                 goto out;
 914         }
 915
 916         net = libcfs_str2net(nw);
 917         if (net == LNET_NIDNET(LNET_NID_ANY)) {
 918                 snprintf(err_str,
 919                          sizeof(err_str),
 920                          "\"cannot parse net '%s'\"", nw);
 921                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 922                 goto out;
 923         }
 924
 925         gateway_nid = libcfs_str2nid(gw);
 926         if (gateway_nid == LNET_NID_ANY) {
 927                 snprintf(err_str,
 928                          sizeof(err_str),
 929                          "\"cannot parse gateway NID '%s'\"", gw);
 930                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 931                 goto out;
 932         }
 933
 934         LIBCFS_IOC_INIT_V2(data, cfg_hdr);
 935         data.cfg_net = net;
 936         data.cfg_nid = gateway_nid;
 937
 938         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_DEL_ROUTE, &data);
 939         if (rc != 0) {
 940                 rc = -errno;
 941                 snprintf(err_str,
 942                          sizeof(err_str),
 943                          "\"cannot delete route: %s\"", strerror(errno));
 944                 goto out;
 945         }
 946
 947 out:
 948         cYAML_build_error(rc, seq_no, DEL_CMD, "route", err_str, err_rc);
 949
 950         return rc;
 951 }
 952
 953 int lustre_lnet_show_route(char *nw, char *gw, int hops, int prio, int detail,
 954                            int seq_no, struct cYAML **show_rc,
 955                            struct cYAML **err_rc, bool backup)
 956 {
 957         struct lnet_ioctl_config_data data;
 958         lnet_nid_t gateway_nid;
 959         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
 960         int l_errno = 0;
 961         __u32 net = LNET_NIDNET(LNET_NID_ANY);
 962         int i;
 963         struct cYAML *root = NULL, *route = NULL, *item = NULL;
 964         struct cYAML *first_seq = NULL;
 965         char err_str[LNET_MAX_STR_LEN];
 966         bool exist = false;
 967
 968         snprintf(err_str, sizeof(err_str),
 969                  "\"out of memory\"");
 970
 971         if (nw != NULL) {
 972                 net = libcfs_str2net(nw);
 973                 if (net == LNET_NIDNET(LNET_NID_ANY)) {
 974                         snprintf(err_str,
 975                                  sizeof(err_str),
 976                                  "\"cannot parse net '%s'\"", nw);
 977                         rc = LUSTRE_CFG_RC_BAD_PARAM;
 978                         goto out;
 979                 }
 980
 981         } else {
 982                 /* show all routes without filtering on net */
 983                 net = LNET_NIDNET(LNET_NID_ANY);
 984         }
 985
 986         if (gw != NULL) {
 987                 gateway_nid = libcfs_str2nid(gw);
 988                 if (gateway_nid == LNET_NID_ANY) {
 989                         snprintf(err_str,
 990                                  sizeof(err_str),
 991                                  "\"cannot parse gateway NID '%s'\"", gw);
 992                         rc = LUSTRE_CFG_RC_BAD_PARAM;
 993                         goto out;
 994                 }
 995         } else
 996                 /* show all routes with out filtering on gateway */
 997                 gateway_nid = LNET_NID_ANY;
 998
 999         if ((hops < 1 && hops != -1) || hops > 255) {
1000                 snprintf(err_str,
1001                          sizeof(err_str),
1002                          "\"invalid hop count %d, must be between 0 and 256\"",
1003                          hops);
1004                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
1005                 goto out;
1006         }
1007
1008         /* create struct cYAML root object */
1009         root = cYAML_create_object(NULL, NULL);
1010         if (root == NULL)
1011                 goto out;
1012
1013         route = cYAML_create_seq(root, "route");
1014         if (route == NULL)
1015                 goto out;
1016
1017         for (i = 0;; i++) {
1018                 LIBCFS_IOC_INIT_V2(data, cfg_hdr);
1019                 data.cfg_count = i;
1020
1021                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_ROUTE, &data);
1022                 if (rc != 0) {
1023                         l_errno = errno;
1024                         break;
1025                 }
1026
1027                 /* filter on provided data */
1028                 if (net != LNET_NIDNET(LNET_NID_ANY) &&
1029                     net != data.cfg_net)
1030                         continue;
1031
1032                 if (gateway_nid != LNET_NID_ANY &&
1033                     gateway_nid != data.cfg_nid)
1034                         continue;
1035
1036                 if (hops != -1 &&
1037                     hops != data.cfg_config_u.cfg_route.rtr_hop)
1038                         continue;
1039
1040                 if (prio != -1 &&
1041                     prio != data.cfg_config_u.cfg_route.rtr_priority)
1042                         continue;
1043
1044                 /* default rc to -1 incase we hit the goto */
1045                 rc = -1;
1046                 exist = true;
1047
1048                 item = cYAML_create_seq_item(route);
1049                 if (item == NULL)
1050                         goto out;
1051
1052                 if (first_seq == NULL)
1053                         first_seq = item;
1054
1055                 if (cYAML_create_string(item, "net",
1056                                         libcfs_net2str(data.cfg_net)) == NULL)
1057                         goto out;
1058
1059                 if (cYAML_create_string(item, "gateway",
1060                                         libcfs_nid2str(data.cfg_nid)) == NULL)
1061                         goto out;
1062
1063                 if (detail) {
1064                         if (cYAML_create_number(item, "hop",
1065                                                 (int) data.cfg_config_u.
1066                                                 cfg_route.rtr_hop) ==
1067                             NULL)
1068                                 goto out;
1069
1070                         if (cYAML_create_number(item, "priority",
1071                                                 data.cfg_config_u.
1072                                                 cfg_route.rtr_priority) == NULL)
1073                                 goto out;
1074
1075                         if (!backup &&
1076                             cYAML_create_string(item, "state",
1077                                                 data.cfg_config_u.cfg_route.
1078                                                         rtr_flags ?
1079                                                 "up" : "down") == NULL)
1080                                 goto out;
1081                 }
1082         }
1083
1084         /* print output iff show_rc is not provided */
1085         if (show_rc == NULL)
1086                 cYAML_print_tree(root);
1087
1088         if (l_errno != ENOENT) {
1089                 snprintf(err_str,
1090                          sizeof(err_str),
1091                          "\"cannot get routes: %s\"",
1092                          strerror(l_errno));
1093                 rc = -l_errno;
1094                 goto out;
1095         } else
1096                 rc = LUSTRE_CFG_RC_NO_ERR;
1097
1098         snprintf(err_str, sizeof(err_str), "\"success\"");
1099 out:
1100         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR || !exist) {
1101                 cYAML_free_tree(root);
1102         } else if (show_rc != NULL && *show_rc != NULL) {
1103                 struct cYAML *show_node;
1104                 /* find the route node, if one doesn't exist then
1105                  * insert one.  Otherwise add to the one there
1106                  */
1107                 show_node = cYAML_get_object_item(*show_rc, "route");
1108                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
1109                         cYAML_insert_child(show_node, first_seq);
1110                         free(route);
1111                         free(root);
1112                 } else if (show_node == NULL) {
1113                         cYAML_insert_sibling((*show_rc)->cy_child,
1114                                                 route);
1115                         free(root);
1116                 } else {
1117                         cYAML_free_tree(root);
1118                 }
1119         } else {
1120                 *show_rc = root;
1121         }
1122
1123         cYAML_build_error(rc, seq_no, SHOW_CMD, "route", err_str, err_rc);
1124
1125         return rc;
1126 }
1127
1128 static int socket_intf_query(int request, char *intf,
1129                              struct ifreq *ifr)
1130 {
1131         int rc = 0;
1132         int sockfd;
1133
1134         if (strlen(intf) >= IFNAMSIZ || ifr == NULL)
1135                 return LUSTRE_CFG_RC_BAD_PARAM;
1136
1137         sockfd = socket(AF_INET, SOCK_DGRAM, 0);
1138         if (sockfd < 0)
1139                 return LUSTRE_CFG_RC_BAD_PARAM;
1140
1141         strcpy(ifr->ifr_name, intf);
1142         rc = ioctl(sockfd, request, ifr);
1143         if (rc != 0)
1144                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1145
1146         close(sockfd);
1147
1148         return rc;
1149 }
1150
1151 static int lustre_lnet_queryip(struct lnet_dlc_intf_descr *intf, __u32 *ip)
1152 {
1153         struct ifreq ifr;
1154         int rc;
1155
1156         memset(&ifr, 0, sizeof(ifr));
1157         rc = socket_intf_query(SIOCGIFFLAGS, intf->intf_name, &ifr);
1158         if (rc != 0)
1159                 return LUSTRE_CFG_RC_BAD_PARAM;
1160
1161         if ((ifr.ifr_flags & IFF_UP) == 0)
1162                 return LUSTRE_CFG_RC_BAD_PARAM;
1163
1164         memset(&ifr, 0, sizeof(ifr));
1165         rc = socket_intf_query(SIOCGIFADDR, intf->intf_name, &ifr);
1166         if (rc != 0)
1167                 return LUSTRE_CFG_RC_BAD_PARAM;
1168
1169         *ip = ((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr.s_addr;
1170         *ip = bswap_32(*ip);
1171
1172         return LUSTRE_CFG_RC_NO_ERR;
1173 }
1174
1175 /*
1176  * for each interface in the array of interfaces find the IP address of
1177  * that interface, create its nid and add it to an array of NIDs.
1178  * Stop if any of the interfaces is down
1179  */
1180 static int lustre_lnet_intf2nids(struct lnet_dlc_network_descr *nw,
1181                                  lnet_nid_t **nids, __u32 *nnids,
1182                                  char *err_str, size_t str_len)
1183 {
1184         int i = 0, count = 0, rc;
1185         struct lnet_dlc_intf_descr *intf;
1186         char val[LNET_MAX_STR_LEN];
1187         __u32 ip;
1188         int gni_num;
1189
1190
1191         if (nw == NULL || nids == NULL) {
1192                 snprintf(err_str, str_len,
1193                          "\"unexpected parameters to lustre_lnet_intf2nids()\"");
1194                 err_str[str_len - 1] = '\0';
1195                 return LUSTRE_CFG_RC_BAD_PARAM;
1196         }
1197
1198         if (LNET_NETTYP(nw->nw_id) == GNILND) {
1199                 count = 1;
1200         } else {
1201                 list_for_each_entry(intf, &nw->nw_intflist, intf_on_network)
1202                         count++;
1203         }
1204
1205         *nids = calloc(count, sizeof(lnet_nid_t));
1206         if (*nids == NULL) {
1207                 snprintf(err_str, str_len,
1208                          "\"out of memory\"");
1209                 err_str[str_len - 1] = '\0';
1210                 return LUSTRE_CFG_RC_OUT_OF_MEM;
1211         }
1212         /*
1213          * special case the GNI interface since it doesn't have an IP
1214          * address. The assumption is that there can only be one GNI
1215          * interface in the system. No interface name is provided.
1216          */
1217         if (LNET_NETTYP(nw->nw_id) == GNILND) {
1218                 rc = read_sysfs_file(gni_nid_path, "nid", val,
1219                                 1, sizeof(val));
1220                 if (rc) {
1221                         snprintf(err_str, str_len,
1222                                  "\"cannot read gni nid\"");
1223                         err_str[str_len - 1] = '\0';
1224                         goto failed;
1225                 }
1226                 gni_num = atoi(val);
1227
1228                 (*nids)[i] = LNET_MKNID(nw->nw_id, gni_num);
1229
1230                 goto out;
1231         }
1232
1233         /* look at the other interfaces */
1234         list_for_each_entry(intf, &nw->nw_intflist, intf_on_network) {
1235                 rc = lustre_lnet_queryip(intf, &ip);
1236                 if (rc != LUSTRE_CFG_RC_NO_ERR) {
1237                         snprintf(err_str, str_len,
1238                                  "\"couldn't query intf %s\"", intf->intf_name);
1239                         err_str[str_len - 1] = '\0';
1240                         goto failed;
1241                 }
1242                 (*nids)[i] = LNET_MKNID(nw->nw_id, ip);
1243                 i++;
1244         }
1245
1246 out:
1247         *nnids = count;
1248
1249         return 0;
1250
1251 failed:
1252         free(*nids);
1253         *nids = NULL;
1254         return rc;
1255 }
1256
1257 /*
1258  * called repeatedly until a match or no more ip range
1259  * What do you have?
1260  *      ip_range expression
1261  *      interface list with all the interface names.
1262  *      all the interfaces in the system.
1263  *
1264  *      try to match the ip_range expr to one of the interfaces' IPs in
1265  *      the system. If we hit a patch for an interface. Check if that
1266  *      interface name is in the list.
1267  *
1268  *      If there are more than one interface in the list, then make sure
1269  *      that the IPs for all of these interfaces match the ip ranges
1270  *      given.
1271  *
1272  *      for each interface in intf_list
1273  *              look up the intf name in ifa
1274  *              if not there then no match
1275  *              check ip obtained from ifa against a match to any of the
1276  *              ip_ranges given.
1277  *              If no match, then fail
1278  *
1279  *      The result is that all the interfaces have to match.
1280  */
1281 int lustre_lnet_match_ip_to_intf(struct ifaddrs *ifa,
1282                                  struct list_head *intf_list,
1283                                  struct list_head *ip_ranges)
1284 {
1285         int rc;
1286         __u32 ip;
1287         struct lnet_dlc_intf_descr *intf_descr, *tmp;
1288         struct ifaddrs *ifaddr = ifa;
1289         struct lustre_lnet_ip_range_descr *ip_range;
1290         int family;
1291
1292         /*
1293          * if there are no explicit interfaces, and no ip ranges, then
1294          * configure the first tcp interface we encounter.
1295          */
1296         if (list_empty(intf_list) && list_empty(ip_ranges)) {
1297                 for (ifaddr = ifa; ifaddr != NULL; ifaddr = ifaddr->ifa_next) {
1298                         if (ifaddr->ifa_addr == NULL)
1299                                 continue;
1300
1301                         if ((ifaddr->ifa_flags & IFF_UP) == 0)
1302                                 continue;
1303
1304                         family = ifaddr->ifa_addr->sa_family;
1305                         if (family == AF_INET &&
1306                             strcmp(ifaddr->ifa_name, "lo") != 0) {
1307                                 rc = lustre_lnet_add_intf_descr
1308                                         (intf_list, ifaddr->ifa_name,
1309                                         strlen(ifaddr->ifa_name));
1310
1311                                 if (rc != LUSTRE_CFG_RC_NO_ERR)
1312                                         return rc;
1313
1314                                 return LUSTRE_CFG_RC_MATCH;
1315                         }
1316                 }
1317                 return LUSTRE_CFG_RC_NO_MATCH;
1318         }
1319
1320         /*
1321          * First interface which matches an IP pattern will be used
1322          */
1323         if (list_empty(intf_list)) {
1324                 /*
1325                  * no interfaces provided in the rule, but an ip range is
1326                  * provided, so try and match an interface to the ip
1327                  * range.
1328                  */
1329                 for (ifaddr = ifa; ifaddr != NULL; ifaddr = ifaddr->ifa_next) {
1330                         if (ifaddr->ifa_addr == NULL)
1331                                 continue;
1332
1333                         if ((ifaddr->ifa_flags & IFF_UP) == 0)
1334                                 continue;
1335
1336                         family = ifaddr->ifa_addr->sa_family;
1337                         if (family == AF_INET) {
1338                                 ip = ((struct sockaddr_in *)ifaddr->ifa_addr)->
1339                                         sin_addr.s_addr;
1340
1341                                 list_for_each_entry(ip_range, ip_ranges,
1342                                                     ipr_entry) {
1343                                         rc = cfs_ip_addr_match(bswap_32(ip),
1344                                                         &ip_range->ipr_expr);
1345                                         if (!rc)
1346                                                 continue;
1347
1348                                         rc = lustre_lnet_add_intf_descr
1349                                           (intf_list, ifaddr->ifa_name,
1350                                            strlen(ifaddr->ifa_name));
1351
1352                                         if (rc != LUSTRE_CFG_RC_NO_ERR)
1353                                                 return rc;
1354                                 }
1355                         }
1356                 }
1357
1358                 if (!list_empty(intf_list))
1359                         return LUSTRE_CFG_RC_MATCH;
1360
1361                 return LUSTRE_CFG_RC_NO_MATCH;
1362         }
1363
1364         /*
1365          * If an interface is explicitly specified the ip-range might or
1366          * might not be specified. if specified the interface needs to match the
1367          * ip-range. If no ip-range then the interfaces are
1368          * automatically matched if they are all up.
1369          * If > 1 interfaces all the interfaces must match for the NI to
1370          * be configured.
1371          */
1372         list_for_each_entry_safe(intf_descr, tmp, intf_list, intf_on_network) {
1373                 for (ifaddr = ifa; ifaddr != NULL; ifaddr = ifaddr->ifa_next) {
1374                         if (ifaddr->ifa_addr == NULL)
1375                                 continue;
1376
1377                         family = ifaddr->ifa_addr->sa_family;
1378                         if (family == AF_INET &&
1379                             strcmp(intf_descr->intf_name,
1380                                    ifaddr->ifa_name) == 0)
1381                                 break;
1382                 }
1383
1384                 if (ifaddr == NULL) {
1385                         list_del(&intf_descr->intf_on_network);
1386                         free_intf_descr(intf_descr);
1387                         continue;
1388                 }
1389
1390                 if ((ifaddr->ifa_flags & IFF_UP) == 0) {
1391                         list_del(&intf_descr->intf_on_network);
1392                         free_intf_descr(intf_descr);
1393                         continue;
1394                 }
1395
1396                 ip = ((struct sockaddr_in *)ifaddr->ifa_addr)->sin_addr.s_addr;
1397
1398                 rc = 1;
1399                 list_for_each_entry(ip_range, ip_ranges, ipr_entry) {
1400                         rc = cfs_ip_addr_match(bswap_32(ip), &ip_range->ipr_expr);
1401                         if (rc)
1402                                 break;
1403                 }
1404
1405                 if (!rc) {
1406                         /* no match for this interface */
1407                         list_del(&intf_descr->intf_on_network);
1408                         free_intf_descr(intf_descr);
1409                 }
1410         }
1411
1412         return LUSTRE_CFG_RC_MATCH;
1413 }
1414
1415 static int lustre_lnet_resolve_ip2nets_rule(struct lustre_lnet_ip2nets *ip2nets,
1416                                             lnet_nid_t **nids, __u32 *nnids,
1417                                             char *err_str, size_t str_len)
1418 {
1419         struct ifaddrs *ifa;
1420         int rc = LUSTRE_CFG_RC_NO_ERR;
1421
1422         rc = getifaddrs(&ifa);
1423         if (rc < 0) {
1424                 snprintf(err_str, str_len,
1425                          "\"failed to get interface addresses: %d\"", -errno);
1426                 err_str[str_len - 1] = '\0';
1427                 return -errno;
1428         }
1429
1430         rc = lustre_lnet_match_ip_to_intf(ifa,
1431                                           &ip2nets->ip2nets_net.nw_intflist,
1432                                           &ip2nets->ip2nets_ip_ranges);
1433         if (rc != LUSTRE_CFG_RC_MATCH) {
1434                 snprintf(err_str, str_len,
1435                          "\"couldn't match ip to existing interfaces\"");
1436                 err_str[str_len - 1] = '\0';
1437                 freeifaddrs(ifa);
1438                 return rc;
1439         }
1440
1441         rc = lustre_lnet_intf2nids(&ip2nets->ip2nets_net, nids, nnids,
1442                                    err_str, sizeof(err_str));
1443         if (rc != LUSTRE_CFG_RC_NO_ERR) {
1444                 *nids = NULL;
1445                 *nnids = 0;
1446         }
1447
1448         freeifaddrs(ifa);
1449
1450         return rc;
1451 }
1452
1453 static int
1454 lustre_lnet_ioctl_config_ni(struct list_head *intf_list,
1455                             struct lnet_ioctl_config_lnd_tunables *tunables,
1456                             struct cfs_expr_list *global_cpts,
1457                             lnet_nid_t *nids, char *err_str)
1458 {
1459         char *data;
1460         struct lnet_ioctl_config_ni *conf;
1461         struct lnet_ioctl_config_lnd_tunables *tun = NULL;
1462         int rc = LUSTRE_CFG_RC_NO_ERR, i = 0;
1463         size_t len;
1464         int count;
1465         struct lnet_dlc_intf_descr *intf_descr;
1466         __u32 *cpt_array;
1467         struct cfs_expr_list *cpt_expr;
1468
1469         list_for_each_entry(intf_descr, intf_list,
1470                             intf_on_network) {
1471                 if (tunables != NULL)
1472                         len = sizeof(struct lnet_ioctl_config_ni) +
1473                               sizeof(struct lnet_ioctl_config_lnd_tunables);
1474                 else
1475                         len = sizeof(struct lnet_ioctl_config_ni);
1476
1477                 data = calloc(1, len);
1478                 if (!data)
1479                         return LUSTRE_CFG_RC_OUT_OF_MEM;
1480                 conf = (struct lnet_ioctl_config_ni*) data;
1481                 if (tunables != NULL)
1482                         tun = (struct lnet_ioctl_config_lnd_tunables*)
1483                                 conf->lic_bulk;
1484
1485                 LIBCFS_IOC_INIT_V2(*conf, lic_cfg_hdr);
1486                 conf->lic_cfg_hdr.ioc_len = len;
1487                 conf->lic_nid = nids[i];
1488                 strncpy(conf->lic_ni_intf[0], intf_descr->intf_name,
1489                         LNET_MAX_STR_LEN);
1490
1491                 if (intf_descr->cpt_expr != NULL)
1492                         cpt_expr = intf_descr->cpt_expr;
1493                 else if (global_cpts != NULL)
1494                         cpt_expr = global_cpts;
1495                 else
1496                         cpt_expr = NULL;
1497
1498                 if (cpt_expr != NULL) {
1499                         count = cfs_expr_list_values(cpt_expr,
1500                                                      LNET_MAX_SHOW_NUM_CPT,
1501                                                      &cpt_array);
1502                         if (count > 0) {
1503                                 memcpy(conf->lic_cpts, cpt_array,
1504                                        sizeof(cpt_array[0]) * LNET_MAX_STR_LEN);
1505                                 free(cpt_array);
1506                         } else {
1507                                 count = 0;
1508                         }
1509                 } else {
1510                         count = 0;
1511                 }
1512
1513                 conf->lic_ncpts = count;
1514
1515                 if (tunables != NULL)
1516                         memcpy(tun, tunables, sizeof(*tunables));
1517
1518                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_ADD_LOCAL_NI, data);
1519                 if (rc < 0) {
1520                         rc = -errno;
1521                         snprintf(err_str,
1522                                  LNET_MAX_STR_LEN,
1523                                  "\"cannot add network: %s\"", strerror(errno));
1524                         free(data);
1525                         return rc;
1526                 }
1527                 free(data);
1528                 i++;
1529         }
1530
1531         return LUSTRE_CFG_RC_NO_ERR;
1532 }
1533
1534 int
1535 lustre_lnet_config_ip2nets(struct lustre_lnet_ip2nets *ip2nets,
1536                            struct lnet_ioctl_config_lnd_tunables *tunables,
1537                            struct cfs_expr_list *global_cpts,
1538                            int seq_no, struct cYAML **err_rc)
1539 {
1540         lnet_nid_t *nids = NULL;
1541         __u32 nnids = 0;
1542         int rc;
1543         char err_str[LNET_MAX_STR_LEN];
1544
1545         snprintf(err_str, sizeof(err_str), "\"success\"");
1546
1547         if (!ip2nets) {
1548                 snprintf(err_str,
1549                          sizeof(err_str),
1550                          "\"incomplete ip2nets information\"");
1551                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1552                 goto out;
1553         }
1554
1555         /*
1556          * call below function to resolve the rules into a list of nids.
1557          * The memory is allocated in that function then freed here when
1558          * it's no longer needed.
1559          */
1560         rc = lustre_lnet_resolve_ip2nets_rule(ip2nets, &nids, &nnids, err_str,
1561                                               sizeof(err_str));
1562         if (rc != LUSTRE_CFG_RC_NO_ERR && rc != LUSTRE_CFG_RC_MATCH)
1563                 goto out;
1564
1565         if (list_empty(&ip2nets->ip2nets_net.nw_intflist)) {
1566                 snprintf(err_str, sizeof(err_str),
1567                          "\"no interfaces match ip2nets rules\"");
1568                 goto free_nids_out;
1569         }
1570
1571         rc = lustre_lnet_ioctl_config_ni(&ip2nets->ip2nets_net.nw_intflist,
1572                                          tunables, global_cpts, nids,
1573                                          err_str);
1574
1575 free_nids_out:
1576         free(nids);
1577
1578 out:
1579         cYAML_build_error(rc, seq_no, ADD_CMD, "ip2nets", err_str, err_rc);
1580         return rc;
1581 }
1582
1583 int lustre_lnet_config_ni(struct lnet_dlc_network_descr *nw_descr,
1584                           struct cfs_expr_list *global_cpts,
1585                           char *ip2net,
1586                           struct lnet_ioctl_config_lnd_tunables *tunables,
1587                           int seq_no, struct cYAML **err_rc)
1588 {
1589         char *data = NULL;
1590         struct lnet_ioctl_config_ni *conf;
1591         struct lnet_ioctl_config_lnd_tunables *tun = NULL;
1592         char buf[LNET_MAX_STR_LEN];
1593         int rc = LUSTRE_CFG_RC_NO_ERR;
1594         char err_str[LNET_MAX_STR_LEN];
1595         lnet_nid_t *nids = NULL;
1596         __u32 nnids = 0;
1597         size_t len;
1598         int count;
1599         struct lnet_dlc_intf_descr *intf_descr, *tmp;
1600         __u32 *cpt_array;
1601
1602         snprintf(err_str, sizeof(err_str), "\"success\"");
1603
1604         if (ip2net == NULL && (nw_descr == NULL || nw_descr->nw_id == 0 ||
1605             (list_empty(&nw_descr->nw_intflist) &&
1606              LNET_NETTYP(nw_descr->nw_id) != GNILND))) {
1607                 snprintf(err_str,
1608                          sizeof(err_str),
1609                          "\"missing mandatory parameters in NI config: '%s'\"",
1610                          (nw_descr == NULL) ? "network , interface" :
1611                          (nw_descr->nw_id == 0) ? "network" : "interface");
1612                 rc = LUSTRE_CFG_RC_MISSING_PARAM;
1613                 goto out;
1614         }
1615
1616         if (ip2net != NULL && strlen(ip2net) >= sizeof(buf)) {
1617                 snprintf(err_str,
1618                          sizeof(err_str),
1619                          "\"ip2net string too long %d\"",
1620                                 (int)strlen(ip2net));
1621                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
1622                 goto out;
1623         }
1624
1625         if (ip2net != NULL) {
1626                 if (tunables != NULL)
1627                         len = sizeof(struct lnet_ioctl_config_ni) +
1628                               sizeof(struct lnet_ioctl_config_lnd_tunables);
1629                 else
1630                         len = sizeof(struct lnet_ioctl_config_ni);
1631                 data = calloc(1, len);
1632                 if (!data) {
1633                         rc = LUSTRE_CFG_RC_OUT_OF_MEM;
1634                         goto out;
1635                 }
1636                 conf = (struct lnet_ioctl_config_ni*) data;
1637                 if (tunables != NULL)
1638                         tun = (struct lnet_ioctl_config_lnd_tunables*)
1639                                 (data + sizeof(*conf));
1640
1641                 LIBCFS_IOC_INIT_V2(*conf, lic_cfg_hdr);
1642                 conf->lic_cfg_hdr.ioc_len = len;
1643                 strncpy(conf->lic_legacy_ip2nets, ip2net,
1644                         LNET_MAX_STR_LEN);
1645
1646                 if (global_cpts != NULL) {
1647                         count = cfs_expr_list_values(global_cpts,
1648                                                      LNET_MAX_SHOW_NUM_CPT,
1649                                                      &cpt_array);
1650                         if (count > 0) {
1651                                 memcpy(conf->lic_cpts, cpt_array,
1652                                        sizeof(cpt_array[0]) * LNET_MAX_STR_LEN);
1653                                 free(cpt_array);
1654                         } else {
1655                                 count = 0;
1656                         }
1657                 } else {
1658                         count = 0;
1659                 }
1660
1661                 conf->lic_ncpts = count;
1662
1663                 if (tunables != NULL)
1664                         memcpy(tun, tunables, sizeof(*tunables));
1665
1666                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_ADD_LOCAL_NI, data);
1667                 if (rc < 0) {
1668                         rc = -errno;
1669                         snprintf(err_str,
1670                                 sizeof(err_str),
1671                                 "\"cannot add network: %s\"", strerror(errno));
1672                         goto out;
1673                 }
1674
1675                 goto out;
1676         }
1677
1678         if (LNET_NETTYP(nw_descr->nw_id) == LOLND) {
1679                 rc = LUSTRE_CFG_RC_NO_ERR;
1680                 goto out;
1681         }
1682
1683         if (nw_descr->nw_id == LNET_NIDNET(LNET_NID_ANY)) {
1684                 snprintf(err_str,
1685                         sizeof(err_str),
1686                         "\"cannot parse net '%s'\"",
1687                         libcfs_net2str(nw_descr->nw_id));
1688                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1689                 goto out;
1690         }
1691
1692         /*
1693          * special case the GNI since no interface name is expected
1694          */
1695         if (list_empty(&nw_descr->nw_intflist) &&
1696             (LNET_NETTYP(nw_descr->nw_id) != GNILND)) {
1697                 snprintf(err_str,
1698                         sizeof(err_str),
1699                         "\"no interface name provided\"");
1700                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1701                 goto out;
1702         }
1703
1704         rc = lustre_lnet_intf2nids(nw_descr, &nids, &nnids,
1705                                    err_str, sizeof(err_str));
1706         if (rc != 0) {
1707                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1708                 goto out;
1709         }
1710
1711         rc = lustre_lnet_ioctl_config_ni(&nw_descr->nw_intflist,
1712                                          tunables, global_cpts, nids,
1713                                          err_str);
1714
1715 out:
1716         if (nw_descr != NULL) {
1717                 list_for_each_entry_safe(intf_descr, tmp,
1718                                          &nw_descr->nw_intflist,
1719                                          intf_on_network) {
1720                         list_del(&intf_descr->intf_on_network);
1721                         free_intf_descr(intf_descr);
1722                 }
1723         }
1724
1725         cYAML_build_error(rc, seq_no, ADD_CMD, "net", err_str, err_rc);
1726
1727         if (nids)
1728                 free(nids);
1729
1730         if (data)
1731                 free(data);
1732
1733         return rc;
1734 }
1735
1736 int lustre_lnet_del_ni(struct lnet_dlc_network_descr *nw_descr,
1737                        int seq_no, struct cYAML **err_rc)
1738 {
1739         struct lnet_ioctl_config_ni data;
1740         int rc = LUSTRE_CFG_RC_NO_ERR, i;
1741         char err_str[LNET_MAX_STR_LEN];
1742         lnet_nid_t *nids = NULL;
1743         __u32 nnids = 0;
1744         struct lnet_dlc_intf_descr *intf_descr, *tmp;
1745
1746         snprintf(err_str, sizeof(err_str), "\"success\"");
1747
1748         if (nw_descr == NULL || nw_descr->nw_id == 0) {
1749                 snprintf(err_str,
1750                          sizeof(err_str),
1751                          "\"missing mandatory parameter in deleting NI: '%s'\"",
1752                          (nw_descr == NULL) ? "network , interface" :
1753                          (nw_descr->nw_id == 0) ? "network" : "interface");
1754                 rc = LUSTRE_CFG_RC_MISSING_PARAM;
1755                 goto out;
1756         }
1757
1758         if (LNET_NETTYP(nw_descr->nw_id) == LOLND)
1759                 return LUSTRE_CFG_RC_NO_ERR;
1760
1761         if (nw_descr->nw_id == LNET_NIDNET(LNET_NID_ANY)) {
1762                 snprintf(err_str,
1763                          sizeof(err_str),
1764                          "\"cannot parse net '%s'\"",
1765                          libcfs_net2str(nw_descr->nw_id));
1766                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1767                 goto out;
1768         }
1769
1770         rc = lustre_lnet_intf2nids(nw_descr, &nids, &nnids,
1771                                    err_str, sizeof(err_str));
1772         if (rc != 0) {
1773                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1774                 goto out;
1775         }
1776
1777         /*
1778          * no interfaces just the nw_id is specified
1779          */
1780         if (nnids == 0) {
1781                 nids = calloc(1, sizeof(*nids));
1782                 if (nids == NULL) {
1783                         snprintf(err_str, sizeof(err_str),
1784                                 "\"out of memory\"");
1785                         rc = LUSTRE_CFG_RC_OUT_OF_MEM;
1786                         goto out;
1787                 }
1788                 nids[0] = LNET_MKNID(nw_descr->nw_id, 0);
1789                 nnids = 1;
1790         }
1791
1792         for (i = 0; i < nnids; i++) {
1793                 LIBCFS_IOC_INIT_V2(data, lic_cfg_hdr);
1794                 data.lic_nid = nids[i];
1795
1796                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_DEL_LOCAL_NI, &data);
1797                 if (rc < 0) {
1798                         rc = -errno;
1799                         snprintf(err_str,
1800                                 sizeof(err_str),
1801                                 "\"cannot del network: %s\"", strerror(errno));
1802                 }
1803         }
1804
1805         list_for_each_entry_safe(intf_descr, tmp, &nw_descr->nw_intflist,
1806                                  intf_on_network) {
1807                 list_del(&intf_descr->intf_on_network);
1808                 free_intf_descr(intf_descr);
1809         }
1810
1811 out:
1812         cYAML_build_error(rc, seq_no, DEL_CMD, "net", err_str, err_rc);
1813
1814         if (nids != NULL)
1815                 free(nids);
1816
1817         return rc;
1818 }
1819
1820 static bool
1821 add_msg_stats_to_yaml_blk(struct cYAML *yaml,
1822                           struct lnet_ioctl_comm_count *counts)
1823 {
1824         if (cYAML_create_number(yaml, "put",
1825                                 counts->ico_put_count)
1826                                         == NULL)
1827                 return false;
1828         if (cYAML_create_number(yaml, "get",
1829                                 counts->ico_get_count)
1830                                         == NULL)
1831                 return false;
1832         if (cYAML_create_number(yaml, "reply",
1833                                 counts->ico_reply_count)
1834                                         == NULL)
1835                 return false;
1836         if (cYAML_create_number(yaml, "ack",
1837                                 counts->ico_ack_count)
1838                                         == NULL)
1839                 return false;
1840         if (cYAML_create_number(yaml, "hello",
1841                                 counts->ico_hello_count)
1842                                         == NULL)
1843                 return false;
1844
1845         return true;
1846 }
1847
1848 static struct lnet_ioctl_comm_count *
1849 get_counts(struct lnet_ioctl_element_msg_stats *msg_stats, int idx)
1850 {
1851         if (idx == 0)
1852                 return &msg_stats->im_send_stats;
1853         if (idx == 1)
1854                 return &msg_stats->im_recv_stats;
1855         if (idx == 2)
1856                 return &msg_stats->im_drop_stats;
1857
1858         return NULL;
1859 }
1860
1861 int lustre_lnet_show_net(char *nw, int detail, int seq_no,
1862                          struct cYAML **show_rc, struct cYAML **err_rc,
1863                          bool backup)
1864 {
1865         char *buf;
1866         struct lnet_ioctl_config_ni *ni_data;
1867         struct lnet_ioctl_config_lnd_tunables *lnd;
1868         struct lnet_ioctl_element_stats *stats;
1869         struct lnet_ioctl_element_msg_stats msg_stats;
1870         __u32 net = LNET_NIDNET(LNET_NID_ANY);
1871         __u32 prev_net = LNET_NIDNET(LNET_NID_ANY);
1872         int rc = LUSTRE_CFG_RC_OUT_OF_MEM, i, j;
1873         int l_errno = 0;
1874         struct cYAML *root = NULL, *tunables = NULL,
1875                 *net_node = NULL, *interfaces = NULL,
1876                 *item = NULL, *first_seq = NULL,
1877                 *tmp = NULL, *statistics = NULL;
1878         int str_buf_len = LNET_MAX_SHOW_NUM_CPT * 2;
1879         char str_buf[str_buf_len];
1880         char *pos;
1881         char err_str[LNET_MAX_STR_LEN];
1882         bool exist = false, new_net = true;
1883         int net_num = 0;
1884         size_t buf_size = sizeof(*ni_data) + sizeof(*lnd) + sizeof(*stats);
1885
1886         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
1887
1888         buf = calloc(1, buf_size);
1889         if (buf == NULL)
1890                 goto out;
1891
1892         ni_data = (struct lnet_ioctl_config_ni *)buf;
1893
1894         if (nw != NULL) {
1895                 net = libcfs_str2net(nw);
1896                 if (net == LNET_NIDNET(LNET_NID_ANY)) {
1897                         snprintf(err_str,
1898                                  sizeof(err_str),
1899                                  "\"cannot parse net '%s'\"", nw);
1900                         rc = LUSTRE_CFG_RC_BAD_PARAM;
1901                         goto out;
1902                 }
1903         }
1904
1905         root = cYAML_create_object(NULL, NULL);
1906         if (root == NULL)
1907                 goto out;
1908
1909         net_node = cYAML_create_seq(root, "net");
1910         if (net_node == NULL)
1911                 goto out;
1912
1913         for (i = 0;; i++) {
1914                 pos = str_buf;
1915                 __u32 rc_net;
1916
1917                 memset(buf, 0, buf_size);
1918
1919                 LIBCFS_IOC_INIT_V2(*ni_data, lic_cfg_hdr);
1920                 /*
1921                  * set the ioc_len to the proper value since INIT assumes
1922                  * size of data
1923                  */
1924                 ni_data->lic_cfg_hdr.ioc_len = buf_size;
1925                 ni_data->lic_idx = i;
1926
1927                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_LOCAL_NI, ni_data);
1928                 if (rc != 0) {
1929                         l_errno = errno;
1930                         break;
1931                 }
1932
1933                 rc_net = LNET_NIDNET(ni_data->lic_nid);
1934
1935                 /* filter on provided data */
1936                 if (net != LNET_NIDNET(LNET_NID_ANY) &&
1937                     net != rc_net)
1938                         continue;
1939
1940                 /* if we're backing up don't store lo */
1941                 if (backup && LNET_NETTYP(rc_net) == LOLND)
1942                         continue;
1943
1944                 /* default rc to -1 in case we hit the goto */
1945                 rc = -1;
1946                 exist = true;
1947
1948                 stats = (struct lnet_ioctl_element_stats *)ni_data->lic_bulk;
1949                 lnd = (struct lnet_ioctl_config_lnd_tunables *)
1950                         (ni_data->lic_bulk + sizeof(*stats));
1951
1952                 if (rc_net != prev_net) {
1953                         prev_net = rc_net;
1954                         new_net = true;
1955                         net_num++;
1956                 }
1957
1958                 if (new_net) {
1959                         if (!cYAML_create_string(net_node, "net type",
1960                                                  libcfs_net2str(rc_net)))
1961                                 goto out;
1962
1963                         tmp = cYAML_create_seq(net_node, "local NI(s)");
1964                         if (tmp == NULL)
1965                                 goto out;
1966                         new_net = false;
1967                 }
1968
1969                 /* create the tree to be printed. */
1970                 item = cYAML_create_seq_item(tmp);
1971                 if (item == NULL)
1972                         goto out;
1973
1974                 if (first_seq == NULL)
1975                         first_seq = item;
1976
1977                 if (!backup &&
1978                     cYAML_create_string(item, "nid",
1979                                         libcfs_nid2str(ni_data->lic_nid)) == NULL)
1980                         goto out;
1981
1982                 if (!backup &&
1983                     cYAML_create_string(item,
1984                                         "status",
1985                                         (ni_data->lic_status ==
1986                                           LNET_NI_STATUS_UP) ?
1987                                             "up" : "down") == NULL)
1988                         goto out;
1989
1990                 /* don't add interfaces unless there is at least one
1991                  * interface */
1992                 if (strlen(ni_data->lic_ni_intf[0]) > 0) {
1993                         interfaces = cYAML_create_object(item, "interfaces");
1994                         if (interfaces == NULL)
1995                                 goto out;
1996
1997                         for (j = 0; j < LNET_INTERFACES_NUM; j++) {
1998                                 if (strlen(ni_data->lic_ni_intf[j]) > 0) {
1999                                         snprintf(str_buf,
2000                                                  sizeof(str_buf), "%d", j);
2001                                         if (cYAML_create_string(interfaces,
2002                                                 str_buf,
2003                                                 ni_data->lic_ni_intf[j]) ==
2004                                                         NULL)
2005                                                 goto out;
2006                                 }
2007                         }
2008                 }
2009
2010                 if (detail) {
2011                         char *limit;
2012                         int k;
2013
2014                         if (backup)
2015                                 goto continue_without_msg_stats;
2016
2017                         statistics = cYAML_create_object(item, "statistics");
2018                         if (statistics == NULL)
2019                                 goto out;
2020
2021                         if (cYAML_create_number(statistics, "send_count",
2022                                                 stats->iel_send_count)
2023                                                         == NULL)
2024                                 goto out;
2025
2026                         if (cYAML_create_number(statistics, "recv_count",
2027                                                 stats->iel_recv_count)
2028                                                         == NULL)
2029                                 goto out;
2030
2031                         if (cYAML_create_number(statistics, "drop_count",
2032                                                 stats->iel_drop_count)
2033                                                         == NULL)
2034                                 goto out;
2035
2036                         if (detail < 2)
2037                                 goto continue_without_msg_stats;
2038
2039                         LIBCFS_IOC_INIT_V2(msg_stats, im_hdr);
2040                         msg_stats.im_hdr.ioc_len = sizeof(msg_stats);
2041                         msg_stats.im_idx = i;
2042
2043                         rc = l_ioctl(LNET_DEV_ID,
2044                                      IOC_LIBCFS_GET_LOCAL_NI_MSG_STATS,
2045                                      &msg_stats);
2046                         if (rc != 0) {
2047                                 l_errno = errno;
2048                                 goto continue_without_msg_stats;
2049                         }
2050
2051                         for (k = 0; k < 3; k++) {
2052                                 struct lnet_ioctl_comm_count *counts;
2053                                 struct cYAML *msg_statistics = NULL;
2054
2055                                 msg_statistics = cYAML_create_object(item,
2056                                                  (char *)gmsg_stat_names[k]);
2057                                 if (msg_statistics == NULL)
2058                                         goto out;
2059
2060                                 counts = get_counts(&msg_stats, k);
2061                                 if (counts == NULL)
2062                                         goto out;
2063
2064                                 if (!add_msg_stats_to_yaml_blk(msg_statistics,
2065                                                                counts))
2066                                         goto out;
2067                         }
2068
2069 continue_without_msg_stats:
2070                         tunables = cYAML_create_object(item, "tunables");
2071                         if (!tunables)
2072                                 goto out;
2073
2074                         rc = lustre_net_show_tunables(tunables, &lnd->lt_cmn);
2075                         if (rc != LUSTRE_CFG_RC_NO_ERR)
2076                                 goto out;
2077
2078                         rc = lustre_ni_show_tunables(tunables, LNET_NETTYP(rc_net),
2079                                                      &lnd->lt_tun);
2080                         if (rc != LUSTRE_CFG_RC_NO_ERR &&
2081                             rc != LUSTRE_CFG_RC_NO_MATCH)
2082                                 goto out;
2083
2084                         if (rc != LUSTRE_CFG_RC_NO_MATCH) {
2085                                 tunables = cYAML_create_object(item,
2086                                                                "lnd tunables");
2087                                 if (tunables == NULL)
2088                                         goto out;
2089                         }
2090
2091                         if (!backup &&
2092                             cYAML_create_number(item, "dev cpt",
2093                                                 ni_data->lic_dev_cpt) == NULL)
2094                                 goto out;
2095
2096                         if (!backup &&
2097                             cYAML_create_number(item, "tcp bonding",
2098                                                 ni_data->lic_tcp_bonding)
2099                                                         == NULL)
2100                                 goto out;
2101
2102                         /* out put the CPTs in the format: "[x,x,x,...]" */
2103                         limit = str_buf + str_buf_len - 3;
2104                         pos += snprintf(pos, limit - pos, "\"[");
2105                         for (j = 0 ; ni_data->lic_ncpts >= 1 &&
2106                                 j < ni_data->lic_ncpts &&
2107                                 pos < limit; j++) {
2108                                 pos += snprintf(pos, limit - pos,
2109                                                 "%d", ni_data->lic_cpts[j]);
2110                                 if ((j + 1) < ni_data->lic_ncpts)
2111                                         pos += snprintf(pos, limit - pos, ",");
2112                         }
2113                         pos += snprintf(pos, 3, "]\"");
2114
2115                         if (ni_data->lic_ncpts >= 1 &&
2116                             cYAML_create_string(item, "CPT",
2117                                                 str_buf) == NULL)
2118                                 goto out;
2119                 }
2120         }
2121
2122         /* Print out the net information only if show_rc is not provided */
2123         if (show_rc == NULL)
2124                 cYAML_print_tree(root);
2125
2126         if (l_errno != ENOENT) {
2127                 snprintf(err_str,
2128                          sizeof(err_str),
2129                          "\"cannot get networks: %s\"",
2130                          strerror(l_errno));
2131                 rc = -l_errno;
2132                 goto out;
2133         } else
2134                 rc = LUSTRE_CFG_RC_NO_ERR;
2135
2136         snprintf(err_str, sizeof(err_str), "\"success\"");
2137 out:
2138         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR || !exist) {
2139                 cYAML_free_tree(root);
2140         } else if (show_rc != NULL && *show_rc != NULL) {
2141                 struct cYAML *show_node;
2142                 /* find the net node, if one doesn't exist
2143                  * then insert one.  Otherwise add to the one there
2144                  */
2145                 show_node = cYAML_get_object_item(*show_rc, "net");
2146                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
2147                         cYAML_insert_child(show_node, first_seq);
2148                         free(net_node);
2149                         free(root);
2150                 } else if (show_node == NULL) {
2151                         cYAML_insert_sibling((*show_rc)->cy_child,
2152                                                 net_node);
2153                         free(root);
2154                 } else {
2155                         cYAML_free_tree(root);
2156                 }
2157         } else {
2158                 *show_rc = root;
2159         }
2160
2161         cYAML_build_error(rc, seq_no, SHOW_CMD, "net", err_str, err_rc);
2162
2163         return rc;
2164 }
2165
2166 int lustre_lnet_enable_routing(int enable, int seq_no, struct cYAML **err_rc)
2167 {
2168         struct lnet_ioctl_config_data data;
2169         int rc = LUSTRE_CFG_RC_NO_ERR;
2170         char err_str[LNET_MAX_STR_LEN];
2171
2172         snprintf(err_str, sizeof(err_str), "\"success\"");
2173
2174         LIBCFS_IOC_INIT_V2(data, cfg_hdr);
2175         data.cfg_config_u.cfg_buffers.buf_enable = (enable) ? 1 : 0;
2176
2177         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_CONFIG_RTR, &data);
2178         if (rc != 0) {
2179                 rc = -errno;
2180                 snprintf(err_str,
2181                          sizeof(err_str),
2182                          "\"cannot %s routing %s\"",
2183                          (enable) ? "enable" : "disable", strerror(errno));
2184                 goto out;
2185         }
2186
2187 out:
2188         cYAML_build_error(rc, seq_no,
2189                          (enable) ? ADD_CMD : DEL_CMD,
2190                          "routing", err_str, err_rc);
2191
2192         return rc;
2193 }
2194
2195 int ioctl_set_value(__u32 val, int ioc, char *name,
2196                     int seq_no, struct cYAML **err_rc)
2197 {
2198         struct lnet_ioctl_set_value data;
2199         int rc = LUSTRE_CFG_RC_NO_ERR;
2200         char err_str[LNET_MAX_STR_LEN];
2201
2202         snprintf(err_str, sizeof(err_str), "\"success\"");
2203
2204         LIBCFS_IOC_INIT_V2(data, sv_hdr);
2205         data.sv_value = val;
2206
2207         rc = l_ioctl(LNET_DEV_ID, ioc , &data);
2208         if (rc != 0) {
2209                 rc = -errno;
2210                 snprintf(err_str,
2211                          sizeof(err_str),
2212                          "\"cannot configure %s to %d: %s\"", name,
2213                          val, strerror(errno));
2214         }
2215
2216         cYAML_build_error(rc, seq_no, ADD_CMD, name, err_str, err_rc);
2217
2218         return rc;
2219 }
2220
2221 int lustre_lnet_config_max_intf(int max, int seq_no, struct cYAML **err_rc)
2222 {
2223         int rc = LUSTRE_CFG_RC_NO_ERR;
2224         char err_str[LNET_MAX_STR_LEN];
2225         char val[LNET_MAX_STR_LEN];
2226
2227         snprintf(err_str, sizeof(err_str), "\"success\"");
2228
2229         snprintf(val, sizeof(val), "%d", max);
2230
2231         rc = write_sysfs_file(modparam_path, "lnet_interfaces_max", val,
2232                               1, strlen(val) + 1);
2233         if (rc)
2234                 snprintf(err_str, sizeof(err_str),
2235                          "\"cannot configure max interfaces: %s\"",
2236                          strerror(errno));
2237
2238         cYAML_build_error(rc, seq_no, ADD_CMD, "max_interfaces", err_str, err_rc);
2239
2240         return rc;
2241 }
2242
2243 int lustre_lnet_config_discovery(int enable, int seq_no, struct cYAML **err_rc)
2244 {
2245         int rc = LUSTRE_CFG_RC_NO_ERR;
2246         char err_str[LNET_MAX_STR_LEN];
2247         char val[LNET_MAX_STR_LEN];
2248
2249         snprintf(err_str, sizeof(err_str), "\"success\"");
2250
2251         snprintf(val, sizeof(val), "%u", (enable) ? 0 : 1);
2252
2253         rc = write_sysfs_file(modparam_path, "lnet_peer_discovery_disabled", val,
2254                               1, strlen(val) + 1);
2255         if (rc)
2256                 snprintf(err_str, sizeof(err_str),
2257                          "\"cannot configure discovery: %s\"",
2258                          strerror(errno));
2259
2260         cYAML_build_error(rc, seq_no, ADD_CMD, "discovery", err_str, err_rc);
2261
2262         return rc;
2263
2264 }
2265
2266 int lustre_lnet_config_numa_range(int range, int seq_no, struct cYAML **err_rc)
2267 {
2268         return ioctl_set_value(range, IOC_LIBCFS_SET_NUMA_RANGE,
2269                                "numa_range", seq_no, err_rc);
2270 }
2271
2272 int lustre_lnet_config_buffers(int tiny, int small, int large, int seq_no,
2273                                struct cYAML **err_rc)
2274 {
2275         struct lnet_ioctl_config_data data;
2276         int rc = LUSTRE_CFG_RC_NO_ERR;
2277         char err_str[LNET_MAX_STR_LEN];
2278
2279         snprintf(err_str, sizeof(err_str), "\"success\"");
2280
2281         /* -1 indicates to ignore changes to this field */
2282         if (tiny < -1 || small < -1 || large < -1) {
2283                 snprintf(err_str,
2284                          sizeof(err_str),
2285                          "\"tiny, small and large must be >= 0\"");
2286                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
2287                 goto out;
2288         }
2289
2290         LIBCFS_IOC_INIT_V2(data, cfg_hdr);
2291         data.cfg_config_u.cfg_buffers.buf_tiny = tiny;
2292         data.cfg_config_u.cfg_buffers.buf_small = small;
2293         data.cfg_config_u.cfg_buffers.buf_large = large;
2294
2295         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_ADD_BUF, &data);
2296         if (rc != 0) {
2297                 rc = -errno;
2298                 snprintf(err_str,
2299                          sizeof(err_str),
2300                          "\"cannot configure buffers: %s\"", strerror(errno));
2301                 goto out;
2302         }
2303
2304 out:
2305         cYAML_build_error(rc, seq_no, ADD_CMD, "buf", err_str, err_rc);
2306
2307         return rc;
2308 }
2309
2310 int lustre_lnet_show_routing(int seq_no, struct cYAML **show_rc,
2311                              struct cYAML **err_rc, bool backup)
2312 {
2313         struct lnet_ioctl_config_data *data;
2314         struct lnet_ioctl_pool_cfg *pool_cfg = NULL;
2315         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
2316         int l_errno = 0;
2317         char *buf;
2318         char *pools[LNET_NRBPOOLS] = {"tiny", "small", "large"};
2319         int buf_count[LNET_NRBPOOLS] = {0};
2320         struct cYAML *root = NULL, *pools_node = NULL,
2321                      *type_node = NULL, *item = NULL, *cpt = NULL,
2322                      *first_seq = NULL, *buffers = NULL;
2323         int i, j;
2324         char err_str[LNET_MAX_STR_LEN];
2325         char node_name[LNET_MAX_STR_LEN];
2326         bool exist = false;
2327
2328         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
2329
2330         buf = calloc(1, sizeof(*data) + sizeof(*pool_cfg));
2331         if (buf == NULL)
2332                 goto out;
2333
2334         data = (struct lnet_ioctl_config_data *)buf;
2335
2336         root = cYAML_create_object(NULL, NULL);
2337         if (root == NULL)
2338                 goto out;
2339
2340         if (backup)
2341                 pools_node = cYAML_create_object(root, "routing");
2342         else
2343                 pools_node = cYAML_create_seq(root, "routing");
2344         if (pools_node == NULL)
2345                 goto out;
2346
2347         for (i = 0;; i++) {
2348                 LIBCFS_IOC_INIT_V2(*data, cfg_hdr);
2349                 data->cfg_hdr.ioc_len = sizeof(struct lnet_ioctl_config_data) +
2350                                         sizeof(struct lnet_ioctl_pool_cfg);
2351                 data->cfg_count = i;
2352
2353                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_BUF, data);
2354                 if (rc != 0) {
2355                         l_errno = errno;
2356                         break;
2357                 }
2358
2359                 exist = true;
2360
2361                 pool_cfg = (struct lnet_ioctl_pool_cfg *)data->cfg_bulk;
2362
2363                 if (backup)
2364                         goto calculate_buffers;
2365
2366                 snprintf(node_name, sizeof(node_name), "cpt[%d]", i);
2367                 item = cYAML_create_seq_item(pools_node);
2368                 if (item == NULL)
2369                         goto out;
2370
2371                 if (first_seq == NULL)
2372                         first_seq = item;
2373
2374                 cpt = cYAML_create_object(item, node_name);
2375                 if (cpt == NULL)
2376                         goto out;
2377
2378 calculate_buffers:
2379                 /* create the tree  and print */
2380                 for (j = 0; j < LNET_NRBPOOLS; j++) {
2381                         if (!backup) {
2382                                 type_node = cYAML_create_object(cpt, pools[j]);
2383                                 if (type_node == NULL)
2384                                         goto out;
2385                         }
2386                         if (!backup &&
2387                             cYAML_create_number(type_node, "npages",
2388                                                 pool_cfg->pl_pools[j].pl_npages)
2389                             == NULL)
2390                                 goto out;
2391                         if (!backup &&
2392                             cYAML_create_number(type_node, "nbuffers",
2393                                                 pool_cfg->pl_pools[j].
2394                                                   pl_nbuffers) == NULL)
2395                                 goto out;
2396                         if (!backup &&
2397                             cYAML_create_number(type_node, "credits",
2398                                                 pool_cfg->pl_pools[j].
2399                                                    pl_credits) == NULL)
2400                                 goto out;
2401                         if (!backup &&
2402                             cYAML_create_number(type_node, "mincredits",
2403                                                 pool_cfg->pl_pools[j].
2404                                                    pl_mincredits) == NULL)
2405                                 goto out;
2406                         /* keep track of the total count for each of the
2407                          * tiny, small and large buffers */
2408                         buf_count[j] += pool_cfg->pl_pools[j].pl_nbuffers;
2409                 }
2410         }
2411
2412         if (pool_cfg != NULL) {
2413                 if (backup) {
2414                         if (cYAML_create_number(pools_node, "enable",
2415                                                 pool_cfg->pl_routing) ==
2416                         NULL)
2417                                 goto out;
2418
2419                         goto add_buffer_section;
2420                 }
2421
2422                 item = cYAML_create_seq_item(pools_node);
2423                 if (item == NULL)
2424                         goto out;
2425
2426                 if (cYAML_create_number(item, "enable", pool_cfg->pl_routing) ==
2427                     NULL)
2428                         goto out;
2429         }
2430
2431 add_buffer_section:
2432         /* create a buffers entry in the show. This is necessary so that
2433          * if the YAML output is used to configure a node, the buffer
2434          * configuration takes hold */
2435         buffers = cYAML_create_object(root, "buffers");
2436         if (buffers == NULL)
2437                 goto out;
2438
2439         for (i = 0; i < LNET_NRBPOOLS; i++) {
2440                 if (cYAML_create_number(buffers, pools[i], buf_count[i]) == NULL)
2441                         goto out;
2442         }
2443
2444         if (show_rc == NULL)
2445                 cYAML_print_tree(root);
2446
2447         if (l_errno != ENOENT) {
2448                 snprintf(err_str,
2449                          sizeof(err_str),
2450                          "\"cannot get routing information: %s\"",
2451                          strerror(l_errno));
2452                 rc = -l_errno;
2453                 goto out;
2454         } else
2455                 rc = LUSTRE_CFG_RC_NO_ERR;
2456
2457         snprintf(err_str, sizeof(err_str), "\"success\"");
2458         rc = LUSTRE_CFG_RC_NO_ERR;
2459
2460 out:
2461         free(buf);
2462         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR || !exist) {
2463                 cYAML_free_tree(root);
2464         } else if (show_rc != NULL && *show_rc != NULL) {
2465                 struct cYAML *routing_node;
2466                 /* there should exist only one routing block and one
2467                  * buffers block. If there already exists a previous one
2468                  * then don't add another */
2469                 routing_node = cYAML_get_object_item(*show_rc, "routing");
2470                 if (routing_node == NULL) {
2471                         cYAML_insert_sibling((*show_rc)->cy_child,
2472                                                 root->cy_child);
2473                         free(root);
2474                 } else {
2475                         cYAML_free_tree(root);
2476                 }
2477         } else {
2478                 *show_rc = root;
2479         }
2480
2481         cYAML_build_error(rc, seq_no, SHOW_CMD, "routing", err_str, err_rc);
2482
2483         return rc;
2484 }
2485
2486 int lustre_lnet_show_peer(char *knid, int detail, int seq_no,
2487                           struct cYAML **show_rc, struct cYAML **err_rc,
2488                           bool backup)
2489 {
2490         /*
2491          * TODO: This function is changing in a future patch to accommodate
2492          * PEER_LIST and proper filtering on any nid of the peer
2493          */
2494         struct lnet_ioctl_peer_cfg peer_info;
2495         struct lnet_peer_ni_credit_info *lpni_cri;
2496         struct lnet_ioctl_element_stats *lpni_stats;
2497         struct lnet_ioctl_element_msg_stats *msg_stats;
2498         lnet_nid_t *nidp;
2499         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
2500         int i, j, k;
2501         int l_errno = 0;
2502         __u32 count;
2503         __u32 size;
2504         struct cYAML *root = NULL, *peer = NULL, *peer_ni = NULL,
2505                      *first_seq = NULL, *peer_root = NULL, *tmp = NULL,
2506                      *msg_statistics = NULL, *statistics = NULL;
2507         char err_str[LNET_MAX_STR_LEN];
2508         struct lnet_process_id *list = NULL;
2509         void *data = NULL;
2510         void *lpni_data;
2511
2512         snprintf(err_str, sizeof(err_str),
2513                  "\"out of memory\"");
2514
2515         /* create struct cYAML root object */
2516         root = cYAML_create_object(NULL, NULL);
2517         if (root == NULL)
2518                 goto out;
2519
2520         peer_root = cYAML_create_seq(root, "peer");
2521         if (peer_root == NULL)
2522                 goto out;
2523
2524         count = 1000;
2525         size = count * sizeof(struct lnet_process_id);
2526         list = malloc(size);
2527         if (list == NULL) {
2528                 l_errno = ENOMEM;
2529                 goto out;
2530         }
2531         if (knid != NULL) {
2532                 list[0].nid = libcfs_str2nid(knid);
2533                 count = 1;
2534         } else {
2535                 for (;;) {
2536                         memset(&peer_info, 0, sizeof(peer_info));
2537                         LIBCFS_IOC_INIT_V2(peer_info, prcfg_hdr);
2538                         peer_info.prcfg_hdr.ioc_len = sizeof(peer_info);
2539                         peer_info.prcfg_size = size;
2540                         peer_info.prcfg_bulk = list;
2541
2542                         l_errno = 0;
2543                         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_PEER_LIST,
2544                                      &peer_info);
2545                         count = peer_info.prcfg_count;
2546                         if (rc == 0)
2547                                 break;
2548                         l_errno = errno;
2549                         if (l_errno != E2BIG) {
2550                                 snprintf(err_str,
2551                                         sizeof(err_str),
2552                                         "\"cannot get peer list: %s\"",
2553                                         strerror(l_errno));
2554                                 rc = -l_errno;
2555                                 goto out;
2556                         }
2557                         free(list);
2558                         size = peer_info.prcfg_size;
2559                         list = malloc(size);
2560                         if (list == NULL) {
2561                                 l_errno = ENOMEM;
2562                                 goto out;
2563                         }
2564                 }
2565         }
2566
2567         size = 4096;
2568         data = malloc(size);
2569         if (data == NULL) {
2570                 l_errno = ENOMEM;
2571                 goto out;
2572         }
2573         for (i = 0; i < count; i++) {
2574                 for (;;) {
2575                         memset(&peer_info, 0, sizeof(peer_info));
2576                         LIBCFS_IOC_INIT_V2(peer_info, prcfg_hdr);
2577                         peer_info.prcfg_hdr.ioc_len = sizeof(peer_info);
2578                         peer_info.prcfg_prim_nid = list[i].nid;
2579                         peer_info.prcfg_size = size;
2580                         peer_info.prcfg_bulk = data;
2581
2582                         l_errno = 0;
2583                         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_PEER_NI,
2584                                      &peer_info);
2585                         if (rc == 0)
2586                                 break;
2587                         l_errno = errno;
2588                         if (l_errno != E2BIG) {
2589                                 snprintf(err_str,
2590                                         sizeof(err_str),
2591                                         "\"cannot get peer information: %s\"",
2592                                         strerror(l_errno));
2593                                 rc = -l_errno;
2594                                 goto out;
2595                         }
2596                         free(data);
2597                         size = peer_info.prcfg_size;
2598                         data = malloc(size);
2599                         if (data == NULL) {
2600                                 l_errno = ENOMEM;
2601                                 goto out;
2602                         }
2603                 }
2604
2605                 peer = cYAML_create_seq_item(peer_root);
2606                 if (peer == NULL)
2607                         goto out;
2608
2609                 if (first_seq == NULL)
2610                         first_seq = peer;
2611
2612                 lnet_nid_t pnid = peer_info.prcfg_prim_nid;
2613                 if (cYAML_create_string(peer, "primary nid",
2614                                         libcfs_nid2str(pnid))
2615                     == NULL)
2616                         goto out;
2617                 if (cYAML_create_string(peer, "Multi-Rail",
2618                                         peer_info.prcfg_mr ? "True" : "False")
2619                     == NULL)
2620                         goto out;
2621                 /*
2622                  * print out the state of the peer only if details are
2623                  * requested
2624                  */
2625                 if (detail >= 3) {
2626                         if (!backup &&
2627                             cYAML_create_number(peer, "peer state",
2628                                                 peer_info.prcfg_state)
2629                                 == NULL)
2630                                 goto out;
2631                 }
2632
2633                 tmp = cYAML_create_seq(peer, "peer ni");
2634                 if (tmp == NULL)
2635                         goto out;
2636
2637                 lpni_data = data;
2638                 for (j = 0; j < peer_info.prcfg_count; j++) {
2639                         nidp = lpni_data;
2640                         lpni_cri = (void*)nidp + sizeof(nidp);
2641                         lpni_stats = (void *)lpni_cri + sizeof(*lpni_cri);
2642                         msg_stats = (void *)lpni_stats + sizeof(*lpni_stats);
2643                         lpni_data = (void *)msg_stats + sizeof(*msg_stats);
2644
2645                         peer_ni = cYAML_create_seq_item(tmp);
2646                         if (peer_ni == NULL)
2647                                 goto out;
2648
2649                         if (cYAML_create_string(peer_ni, "nid",
2650                                                 libcfs_nid2str(*nidp))
2651                             == NULL)
2652                                 goto out;
2653
2654                         if (backup)
2655                                 continue;
2656
2657                         if (cYAML_create_string(peer_ni, "state",
2658                                                 lpni_cri->cr_aliveness)
2659                             == NULL)
2660                                 goto out;
2661
2662                         if (!detail)
2663                                 continue;
2664
2665                         if (cYAML_create_number(peer_ni, "max_ni_tx_credits",
2666                                                 lpni_cri->cr_ni_peer_tx_credits)
2667                             == NULL)
2668                                 goto out;
2669
2670                         if (cYAML_create_number(peer_ni, "available_tx_credits",
2671                                                 lpni_cri->cr_peer_tx_credits)
2672                             == NULL)
2673                                 goto out;
2674
2675                         if (cYAML_create_number(peer_ni, "min_tx_credits",
2676                                                 lpni_cri->cr_peer_min_tx_credits)
2677                             == NULL)
2678                                 goto out;
2679
2680                         if (cYAML_create_number(peer_ni, "tx_q_num_of_buf",
2681                                                 lpni_cri->cr_peer_tx_qnob)
2682                             == NULL)
2683                                 goto out;
2684
2685                         if (cYAML_create_number(peer_ni, "available_rtr_credits",
2686                                                 lpni_cri->cr_peer_rtr_credits)
2687                             == NULL)
2688                                 goto out;
2689
2690                         if (cYAML_create_number(peer_ni, "min_rtr_credits",
2691                                                 lpni_cri->cr_peer_min_rtr_credits)
2692                             == NULL)
2693                                 goto out;
2694
2695                         if (cYAML_create_number(peer_ni, "refcount",
2696                                                 lpni_cri->cr_refcount) == NULL)
2697                                 goto out;
2698
2699                         statistics = cYAML_create_object(peer_ni, "statistics");
2700                         if (statistics == NULL)
2701                                 goto out;
2702
2703                         if (cYAML_create_number(statistics, "send_count",
2704                                                 lpni_stats->iel_send_count)
2705                             == NULL)
2706                                 goto out;
2707
2708                         if (cYAML_create_number(statistics, "recv_count",
2709                                                 lpni_stats->iel_recv_count)
2710                             == NULL)
2711                                 goto out;
2712
2713                         if (cYAML_create_number(statistics, "drop_count",
2714                                                 lpni_stats->iel_drop_count)
2715                             == NULL)
2716                                 goto out;
2717
2718                         if (detail < 2)
2719                                 continue;
2720
2721                         for (k = 0; k < 3; k++) {
2722                                 struct lnet_ioctl_comm_count *counts;
2723
2724                                 msg_statistics = cYAML_create_object(peer_ni,
2725                                                  (char *) gmsg_stat_names[k]);
2726                                 if (msg_statistics == NULL)
2727                                         goto out;
2728
2729                                 counts = get_counts(msg_stats, k);
2730                                 if (counts == NULL)
2731                                         goto out;
2732
2733                                 if (!add_msg_stats_to_yaml_blk(msg_statistics,
2734                                                                counts))
2735                                         goto out;
2736                         }
2737
2738                 }
2739         }
2740
2741         /* print output iff show_rc is not provided */
2742         if (show_rc == NULL)
2743                 cYAML_print_tree(root);
2744
2745         snprintf(err_str, sizeof(err_str), "\"success\"");
2746         rc = LUSTRE_CFG_RC_NO_ERR;
2747
2748 out:
2749         free(list);
2750         free(data);
2751         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR) {
2752                 cYAML_free_tree(root);
2753         } else if (show_rc != NULL && *show_rc != NULL) {
2754                 struct cYAML *show_node;
2755                 /* find the peer node, if one doesn't exist then
2756                  * insert one.  Otherwise add to the one there
2757                  */
2758                 show_node = cYAML_get_object_item(*show_rc,
2759                                                   "peer");
2760                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
2761                         cYAML_insert_child(show_node, first_seq);
2762                         free(peer_root);
2763                         free(root);
2764                 } else if (show_node == NULL) {
2765                         cYAML_insert_sibling((*show_rc)->cy_child,
2766                                              peer_root);
2767                         free(root);
2768                 } else {
2769                         cYAML_free_tree(root);
2770                 }
2771         } else {
2772                 *show_rc = root;
2773         }
2774
2775         cYAML_build_error(rc, seq_no, SHOW_CMD, "peer", err_str,
2776                           err_rc);
2777
2778         return rc;
2779 }
2780
2781 int lustre_lnet_list_peer(int seq_no,
2782                           struct cYAML **show_rc, struct cYAML **err_rc)
2783 {
2784         struct lnet_ioctl_peer_cfg peer_info;
2785         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
2786         __u32 count;
2787         __u32 size;
2788         int i = 0;
2789         int l_errno = 0;
2790         struct cYAML *root = NULL, *list_root = NULL, *first_seq = NULL;
2791         char err_str[LNET_MAX_STR_LEN];
2792         struct lnet_process_id *list = NULL;
2793
2794         snprintf(err_str, sizeof(err_str),
2795                  "\"out of memory\"");
2796
2797         memset(&peer_info, 0, sizeof(peer_info));
2798
2799         /* create struct cYAML root object */
2800         root = cYAML_create_object(NULL, NULL);
2801         if (root == NULL)
2802                 goto out;
2803
2804         list_root = cYAML_create_seq(root, "peer list");
2805         if (list_root == NULL)
2806                 goto out;
2807
2808         count = 1000;
2809         size = count * sizeof(struct lnet_process_id);
2810         list = malloc(size);
2811         if (list == NULL) {
2812                 l_errno = ENOMEM;
2813                 goto out;
2814         }
2815         for (;;) {
2816                 LIBCFS_IOC_INIT_V2(peer_info, prcfg_hdr);
2817                 peer_info.prcfg_hdr.ioc_len = sizeof(peer_info);
2818                 peer_info.prcfg_size = size;
2819                 peer_info.prcfg_bulk = list;
2820
2821                 l_errno = 0;
2822                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_PEER_LIST, &peer_info);
2823                 count = peer_info.prcfg_count;
2824                 if (rc == 0)
2825                         break;
2826                 l_errno = errno;
2827                 if (l_errno != E2BIG) {
2828                         snprintf(err_str,
2829                                 sizeof(err_str),
2830                                 "\"cannot get peer list: %s\"",
2831                                 strerror(l_errno));
2832                         rc = -l_errno;
2833                         goto out;
2834                 }
2835                 free(list);
2836                 size = peer_info.prcfg_size;
2837                 list = malloc(size);
2838                 if (list == NULL) {
2839                         l_errno = ENOMEM;
2840                         goto out;
2841                 }
2842         }
2843
2844         /* count is now the actual number of ids in the list. */
2845         for (i = 0; i < count; i++) {
2846                 if (cYAML_create_string(list_root, "nid",
2847                                         libcfs_nid2str(list[i].nid))
2848                     == NULL)
2849                         goto out;
2850         }
2851
2852         /* print output iff show_rc is not provided */
2853         if (show_rc == NULL)
2854                 cYAML_print_tree(root);
2855
2856         snprintf(err_str, sizeof(err_str), "\"success\"");
2857         rc = LUSTRE_CFG_RC_NO_ERR;
2858
2859 out:
2860         if (list != NULL)
2861                 free(list);
2862         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR) {
2863                 cYAML_free_tree(root);
2864         } else if (show_rc != NULL && *show_rc != NULL) {
2865                 struct cYAML *show_node;
2866                 /* find the peer node, if one doesn't exist then
2867                  * insert one.  Otherwise add to the one there
2868                  */
2869                 show_node = cYAML_get_object_item(*show_rc,
2870                                                   "peer");
2871                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
2872                         cYAML_insert_child(show_node, first_seq);
2873                         free(list_root);
2874                         free(root);
2875                 } else if (show_node == NULL) {
2876                         cYAML_insert_sibling((*show_rc)->cy_child,
2877                                              list_root);
2878                         free(root);
2879                 } else {
2880                         cYAML_free_tree(root);
2881                 }
2882         } else {
2883                 *show_rc = root;
2884         }
2885
2886         cYAML_build_error(rc, seq_no, SHOW_CMD, "peer", err_str,
2887                           err_rc);
2888
2889         return rc;
2890 }
2891
2892 static void add_to_global(struct cYAML *show_rc, struct cYAML *node,
2893                           struct cYAML *root)
2894 {
2895         struct cYAML *show_node;
2896
2897         show_node = cYAML_get_object_item(show_rc, "global");
2898         if (show_node != NULL)
2899                 cYAML_insert_sibling(show_node->cy_child,
2900                                      node->cy_child);
2901         else
2902                 cYAML_insert_sibling(show_rc->cy_child,
2903                                      node);
2904         free(root);
2905 }
2906
2907 static int build_global_yaml_entry(char *err_str, int err_len, int seq_no,
2908                                    char *name, __u32 value,
2909                                    struct cYAML **show_rc,
2910                                    struct cYAML **err_rc, int err)
2911 {
2912         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
2913         struct cYAML *root = NULL, *global = NULL;
2914
2915         if (err) {
2916                 rc = err;
2917                 goto out;
2918         }
2919
2920         root = cYAML_create_object(NULL, NULL);
2921         if (root == NULL)
2922                 goto out;
2923
2924         global = cYAML_create_object(root, "global");
2925         if (global == NULL)
2926                 goto out;
2927
2928         if (cYAML_create_number(global, name,
2929                                 value) == NULL)
2930                 goto out;
2931
2932         if (show_rc == NULL)
2933                 cYAML_print_tree(root);
2934
2935         snprintf(err_str, err_len, "\"success\"");
2936
2937         rc = LUSTRE_CFG_RC_NO_ERR;
2938
2939 out:
2940         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR) {
2941                 cYAML_free_tree(root);
2942         } else if (show_rc != NULL && *show_rc != NULL) {
2943                 add_to_global(*show_rc, global, root);
2944         } else {
2945                 *show_rc = root;
2946         }
2947
2948         cYAML_build_error(rc, seq_no, SHOW_CMD, "global", err_str, err_rc);
2949
2950         return rc;
2951 }
2952
2953 static int ioctl_show_global_values(int ioc, int seq_no, char *name,
2954                                     struct cYAML **show_rc,
2955                                     struct cYAML **err_rc)
2956 {
2957         struct lnet_ioctl_set_value data;
2958         int rc;
2959         int l_errno = 0;
2960         char err_str[LNET_MAX_STR_LEN];
2961
2962         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
2963
2964         LIBCFS_IOC_INIT_V2(data, sv_hdr);
2965
2966         rc = l_ioctl(LNET_DEV_ID, ioc, &data);
2967         if (rc != 0) {
2968                 l_errno = -errno;
2969                 snprintf(err_str,
2970                          sizeof(err_str),
2971                          "\"cannot get %s: %s\"",
2972                          name, strerror(l_errno));
2973         }
2974
2975         return build_global_yaml_entry(err_str, sizeof(err_str), seq_no, name,
2976                                        data.sv_value, show_rc, err_rc, l_errno);
2977 }
2978
2979 int lustre_lnet_show_max_intf(int seq_no, struct cYAML **show_rc,
2980                               struct cYAML **err_rc)
2981 {
2982         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
2983         char val[LNET_MAX_STR_LEN];
2984         int max_intf = -1, l_errno = 0;
2985         char err_str[LNET_MAX_STR_LEN];
2986
2987         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
2988
2989         rc = read_sysfs_file(modparam_path, "lnet_interfaces_max", val,
2990                              1, sizeof(val));
2991         if (rc) {
2992                 l_errno = -errno;
2993                 snprintf(err_str, sizeof(err_str),
2994                          "\"cannot get max interfaces: %d\"", rc);
2995         } else {
2996                 max_intf = atoi(val);
2997         }
2998
2999         return build_global_yaml_entry(err_str, sizeof(err_str), seq_no,
3000                                        "max_intf", max_intf, show_rc,
3001                                        err_rc, l_errno);
3002 }
3003
3004 int lustre_lnet_show_discovery(int seq_no, struct cYAML **show_rc,
3005                                struct cYAML **err_rc)
3006 {
3007         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3008         char val[LNET_MAX_STR_LEN];
3009         int discovery = -1, l_errno = 0;
3010         char err_str[LNET_MAX_STR_LEN];
3011
3012         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
3013
3014         rc = read_sysfs_file(modparam_path, "lnet_peer_discovery_disabled", val,
3015                              1, sizeof(val));
3016         if (rc) {
3017                 l_errno = -errno;
3018                 snprintf(err_str, sizeof(err_str),
3019                          "\"cannot get discovery setting: %d\"", rc);
3020         } else {
3021                 /*
3022                  * The kernel stores a discovery disabled value. User space
3023                  * shows whether discovery is enabled. So the value must be
3024                  * inverted.
3025                  */
3026                 discovery = !atoi(val);
3027         }
3028
3029         return build_global_yaml_entry(err_str, sizeof(err_str), seq_no,
3030                                        "discovery", discovery, show_rc,
3031                                        err_rc, l_errno);
3032 }
3033
3034 int lustre_lnet_show_numa_range(int seq_no, struct cYAML **show_rc,
3035                                 struct cYAML **err_rc)
3036 {
3037         return ioctl_show_global_values(IOC_LIBCFS_GET_NUMA_RANGE, seq_no,
3038                                         "numa_range", show_rc, err_rc);
3039 }
3040
3041 int lustre_lnet_show_stats(int seq_no, struct cYAML **show_rc,
3042                            struct cYAML **err_rc)
3043 {
3044         struct lnet_ioctl_lnet_stats data;
3045         int rc;
3046         int l_errno;
3047         char err_str[LNET_MAX_STR_LEN];
3048         struct cYAML *root = NULL, *stats = NULL;
3049
3050         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
3051
3052         LIBCFS_IOC_INIT_V2(data, st_hdr);
3053
3054         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_LNET_STATS, &data);
3055         if (rc != 0) {
3056                 l_errno = errno;
3057                 snprintf(err_str,
3058                          sizeof(err_str),
3059                          "\"cannot get lnet statistics: %s\"",
3060                          strerror(l_errno));
3061                 rc = -l_errno;
3062                 goto out;
3063         }
3064
3065         rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3066
3067         root = cYAML_create_object(NULL, NULL);
3068         if (root == NULL)
3069                 goto out;
3070
3071         stats = cYAML_create_object(root, "statistics");
3072         if (stats == NULL)
3073                 goto out;
3074
3075         if (cYAML_create_number(stats, "msgs_alloc",
3076                                 data.st_cntrs.msgs_alloc) == NULL)
3077                 goto out;
3078
3079         if (cYAML_create_number(stats, "msgs_max",
3080                                 data.st_cntrs.msgs_max) == NULL)
3081                 goto out;
3082
3083         if (cYAML_create_number(stats, "errors",
3084                                 data.st_cntrs.errors) == NULL)
3085                 goto out;
3086
3087         if (cYAML_create_number(stats, "send_count",
3088                                 data.st_cntrs.send_count) == NULL)
3089                 goto out;
3090
3091         if (cYAML_create_number(stats, "recv_count",
3092                                 data.st_cntrs.recv_count) == NULL)
3093                 goto out;
3094
3095         if (cYAML_create_number(stats, "route_count",
3096                                 data.st_cntrs.route_count) == NULL)
3097                 goto out;
3098
3099         if (cYAML_create_number(stats, "drop_count",
3100                                 data.st_cntrs.drop_count) == NULL)
3101                 goto out;
3102
3103         if (cYAML_create_number(stats, "send_length",
3104                                 data.st_cntrs.send_length) == NULL)
3105                 goto out;
3106
3107         if (cYAML_create_number(stats, "recv_length",
3108                                 data.st_cntrs.recv_length) == NULL)
3109                 goto out;
3110
3111         if (cYAML_create_number(stats, "route_length",
3112                                 data.st_cntrs.route_length) == NULL)
3113                 goto out;
3114
3115         if (cYAML_create_number(stats, "drop_length",
3116                                 data.st_cntrs.drop_length) == NULL)
3117                 goto out;
3118
3119         if (show_rc == NULL)
3120                 cYAML_print_tree(root);
3121
3122         snprintf(err_str, sizeof(err_str), "\"success\"");
3123         rc = LUSTRE_CFG_RC_NO_ERR;
3124 out:
3125         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR) {
3126                 cYAML_free_tree(root);
3127         } else if (show_rc != NULL && *show_rc != NULL) {
3128                 cYAML_insert_sibling((*show_rc)->cy_child,
3129                                         root->cy_child);
3130                 free(root);
3131         } else {
3132                 *show_rc = root;
3133         }
3134
3135         cYAML_build_error(rc, seq_no, SHOW_CMD, "statistics", err_str, err_rc);
3136
3137         return rc;
3138 }
3139
3140 typedef int (*cmd_handler_t)(struct cYAML *tree,
3141                              struct cYAML **show_rc,
3142                              struct cYAML **err_rc);
3143
3144 static int handle_yaml_config_route(struct cYAML *tree, struct cYAML **show_rc,
3145                                     struct cYAML **err_rc)
3146 {
3147         struct cYAML *net, *gw, *hop, *prio, *seq_no;
3148
3149         net = cYAML_get_object_item(tree, "net");
3150         gw = cYAML_get_object_item(tree, "gateway");
3151         hop = cYAML_get_object_item(tree, "hop");
3152         prio = cYAML_get_object_item(tree, "priority");
3153         seq_no = cYAML_get_object_item(tree, "seq_no");
3154
3155         return lustre_lnet_config_route((net) ? net->cy_valuestring : NULL,
3156                                         (gw) ? gw->cy_valuestring : NULL,
3157                                         (hop) ? hop->cy_valueint : -1,
3158                                         (prio) ? prio->cy_valueint : -1,
3159                                         (seq_no) ? seq_no->cy_valueint : -1,
3160                                         err_rc);
3161 }
3162
3163 static void yaml_free_string_array(char **array, int num)
3164 {
3165         int i;
3166         char **sub_array = array;
3167
3168         for (i = 0; i < num; i++) {
3169                 if (*sub_array != NULL)
3170                         free(*sub_array);
3171                 sub_array++;
3172         }
3173         if (array)
3174                 free(array);
3175 }
3176
3177 /*
3178  *    interfaces:
3179  *        0: <intf_name>['['<expr>']']
3180  *        1: <intf_name>['['<expr>']']
3181  */
3182 static int yaml_copy_intf_info(struct cYAML *intf_tree,
3183                                struct lnet_dlc_network_descr *nw_descr)
3184 {
3185         struct cYAML *child = NULL;
3186         int intf_num = 0, rc = LUSTRE_CFG_RC_NO_ERR;
3187         struct lnet_dlc_intf_descr *intf_descr, *tmp;
3188
3189         if (intf_tree == NULL || nw_descr == NULL)
3190                 return LUSTRE_CFG_RC_BAD_PARAM;
3191
3192         /* now grab all the interfaces and their cpts */
3193         child = intf_tree->cy_child;
3194         while (child != NULL) {
3195                 if (child->cy_valuestring == NULL) {
3196                         child = child->cy_next;
3197                         continue;
3198                 }
3199
3200                 if (strlen(child->cy_valuestring) >= LNET_MAX_STR_LEN)
3201                         goto failed;
3202
3203                 rc = lustre_lnet_add_intf_descr(&nw_descr->nw_intflist,
3204                                                 child->cy_valuestring,
3205                                                 strlen(child->cy_valuestring));
3206                 if (rc != LUSTRE_CFG_RC_NO_ERR)
3207                         goto failed;
3208
3209                 intf_num++;
3210                 child = child->cy_next;
3211         }
3212
3213         if (intf_num == 0)
3214                 return LUSTRE_CFG_RC_MISSING_PARAM;
3215
3216         return intf_num;
3217
3218 failed:
3219         list_for_each_entry_safe(intf_descr, tmp, &nw_descr->nw_intflist,
3220                                  intf_on_network) {
3221                 list_del(&intf_descr->intf_on_network);
3222                 free_intf_descr(intf_descr);
3223         }
3224
3225         return rc;
3226 }
3227
3228 static bool
3229 yaml_extract_cmn_tunables(struct cYAML *tree,
3230                           struct lnet_ioctl_config_lnd_cmn_tunables *tunables,
3231                           struct cfs_expr_list **global_cpts)
3232 {
3233         struct cYAML *tun, *item, *smp;
3234         int rc;
3235
3236         tun = cYAML_get_object_item(tree, "tunables");
3237         if (tun != NULL) {
3238                 item = cYAML_get_object_item(tun, "peer_timeout");
3239                 if (item != NULL)
3240                         tunables->lct_peer_timeout = item->cy_valueint;
3241                 item = cYAML_get_object_item(tun, "peer_credits");
3242                 if (item != NULL)
3243                         tunables->lct_peer_tx_credits = item->cy_valueint;
3244                 item = cYAML_get_object_item(tun, "peer_buffer_credits");
3245                 if (item != NULL)
3246                         tunables->lct_peer_rtr_credits = item->cy_valueint;
3247                 item = cYAML_get_object_item(tun, "credits");
3248                 if (item != NULL)
3249                         tunables->lct_max_tx_credits = item->cy_valueint;
3250                 smp = cYAML_get_object_item(tun, "CPT");
3251                 if (smp != NULL) {
3252                         rc = cfs_expr_list_parse(smp->cy_valuestring,
3253                                                  strlen(smp->cy_valuestring),
3254                                                  0, UINT_MAX, global_cpts);
3255                         if (rc != 0)
3256                                 *global_cpts = NULL;
3257                 }
3258
3259                 return true;
3260         }
3261
3262         return false;
3263 }
3264
3265 static bool
3266 yaml_extract_tunables(struct cYAML *tree,
3267                       struct lnet_ioctl_config_lnd_tunables *tunables,
3268                       struct cfs_expr_list **global_cpts,
3269                       __u32 net_type)
3270 {
3271         bool rc;
3272
3273         rc = yaml_extract_cmn_tunables(tree, &tunables->lt_cmn,
3274                                        global_cpts);
3275
3276         if (!rc)
3277                 return rc;
3278
3279         lustre_yaml_extract_lnd_tunables(tree, net_type,
3280                                          &tunables->lt_tun);
3281
3282         return rc;
3283 }
3284
3285 /*
3286  * net:
3287  *    - net type: <net>[<NUM>]
3288   *      local NI(s):
3289  *        - nid: <ip>@<net>[<NUM>]
3290  *          status: up
3291  *          interfaces:
3292  *               0: <intf_name>['['<expr>']']
3293  *               1: <intf_name>['['<expr>']']
3294  *        tunables:
3295  *               peer_timeout: <NUM>
3296  *               peer_credits: <NUM>
3297  *               peer_buffer_credits: <NUM>
3298  *               credits: <NUM>
3299 *         lnd tunables:
3300  *               peercredits_hiw: <NUM>
3301  *               map_on_demand: <NUM>
3302  *               concurrent_sends: <NUM>
3303  *               fmr_pool_size: <NUM>
3304  *               fmr_flush_trigger: <NUM>
3305  *               fmr_cache: <NUM>
3306  *
3307  * At least one interface is required. If no interfaces are provided the
3308  * network interface can not be configured.
3309  */
3310 static int handle_yaml_config_ni(struct cYAML *tree, struct cYAML **show_rc,
3311                                  struct cYAML **err_rc)
3312 {
3313         struct cYAML *net, *intf, *seq_no, *ip2net = NULL, *local_nis = NULL,
3314                      *item = NULL;
3315         int num_entries = 0, rc;
3316         struct lnet_dlc_network_descr nw_descr;
3317         struct cfs_expr_list *global_cpts = NULL;
3318         struct lnet_ioctl_config_lnd_tunables tunables;
3319         bool found = false;
3320
3321         memset(&tunables, 0, sizeof(tunables));
3322
3323         INIT_LIST_HEAD(&nw_descr.network_on_rule);
3324         INIT_LIST_HEAD(&nw_descr.nw_intflist);
3325
3326         ip2net = cYAML_get_object_item(tree, "ip2net");
3327         net = cYAML_get_object_item(tree, "net type");
3328         if (net)
3329                 nw_descr.nw_id = libcfs_str2net(net->cy_valuestring);
3330         else
3331                 nw_descr.nw_id = LOLND;
3332
3333         /*
3334          * if neither net nor ip2nets are present, then we can not
3335          * configure the network.
3336          */
3337         if (!net && !ip2net)
3338                 return LUSTRE_CFG_RC_MISSING_PARAM;
3339
3340         local_nis = cYAML_get_object_item(tree, "local NI(s)");
3341         if (local_nis == NULL)
3342                 return LUSTRE_CFG_RC_MISSING_PARAM;
3343
3344         if (!cYAML_is_sequence(local_nis))
3345                 return LUSTRE_CFG_RC_BAD_PARAM;
3346
3347         while (cYAML_get_next_seq_item(local_nis, &item) != NULL) {
3348                 intf = cYAML_get_object_item(item, "interfaces");
3349                 if (intf == NULL)
3350                         continue;
3351                 num_entries = yaml_copy_intf_info(intf, &nw_descr);
3352                 if (num_entries <= 0) {
3353                         cYAML_build_error(num_entries, -1, "ni", "add",
3354                                         "bad interface list",
3355                                         err_rc);
3356                         return LUSTRE_CFG_RC_BAD_PARAM;
3357                 }
3358         }
3359
3360         found = yaml_extract_tunables(tree, &tunables, &global_cpts,
3361                                       LNET_NETTYP(nw_descr.nw_id));
3362         seq_no = cYAML_get_object_item(tree, "seq_no");
3363
3364         rc = lustre_lnet_config_ni(&nw_descr,
3365                                    global_cpts,
3366                                    (ip2net) ? ip2net->cy_valuestring : NULL,
3367                                    (found) ? &tunables: NULL,
3368                                    (seq_no) ? seq_no->cy_valueint : -1,
3369                                    err_rc);
3370
3371         if (global_cpts != NULL)
3372                 cfs_expr_list_free(global_cpts);
3373
3374         return rc;
3375 }
3376
3377 /*
3378  * ip2nets:
3379  *  - net-spec: <tcp|o2ib|gni>[NUM]
3380  *    interfaces:
3381  *        0: <intf name>['['<expr>']']
3382  *        1: <intf name>['['<expr>']']
3383  *    ip-range:
3384  *        0: <expr.expr.expr.expr>
3385  *        1: <expr.expr.expr.expr>
3386  */
3387 static int handle_yaml_config_ip2nets(struct cYAML *tree,
3388                                       struct cYAML **show_rc,
3389                                       struct cYAML **err_rc)
3390 {
3391         struct cYAML *net, *ip_range, *item = NULL, *intf = NULL,
3392                      *seq_no = NULL;
3393         struct lustre_lnet_ip2nets ip2nets;
3394         struct lustre_lnet_ip_range_descr *ip_range_descr = NULL,
3395                                           *tmp = NULL;
3396         int rc = LUSTRE_CFG_RC_NO_ERR;
3397         struct cfs_expr_list *global_cpts = NULL;
3398         struct cfs_expr_list *el, *el_tmp;
3399         struct lnet_ioctl_config_lnd_tunables tunables;
3400         struct lnet_dlc_intf_descr *intf_descr, *intf_tmp;
3401         bool found = false;
3402
3403         memset(&tunables, 0, sizeof(tunables));
3404
3405         /* initialize all lists */
3406         INIT_LIST_HEAD(&ip2nets.ip2nets_ip_ranges);
3407         INIT_LIST_HEAD(&ip2nets.ip2nets_net.network_on_rule);
3408         INIT_LIST_HEAD(&ip2nets.ip2nets_net.nw_intflist);
3409
3410         net = cYAML_get_object_item(tree, "net-spec");
3411         if (net == NULL)
3412                 return LUSTRE_CFG_RC_BAD_PARAM;
3413
3414         if (net != NULL && net->cy_valuestring == NULL)
3415                 return LUSTRE_CFG_RC_BAD_PARAM;
3416
3417         /* assign the network id */
3418         ip2nets.ip2nets_net.nw_id = libcfs_str2net(net->cy_valuestring);
3419         if (ip2nets.ip2nets_net.nw_id == LNET_NID_ANY)
3420                 return LUSTRE_CFG_RC_BAD_PARAM;
3421
3422         seq_no = cYAML_get_object_item(tree, "seq_no");
3423
3424         intf = cYAML_get_object_item(tree, "interfaces");
3425         if (intf != NULL) {
3426                 rc = yaml_copy_intf_info(intf, &ip2nets.ip2nets_net);
3427                 if (rc <= 0)
3428                         return LUSTRE_CFG_RC_BAD_PARAM;
3429         }
3430
3431         ip_range = cYAML_get_object_item(tree, "ip-range");
3432         if (ip_range != NULL) {
3433                 item = ip_range->cy_child;
3434                 while (item != NULL) {
3435                         if (item->cy_valuestring == NULL) {
3436                                 item = item->cy_next;
3437                                 continue;
3438                         }
3439
3440                         rc = lustre_lnet_add_ip_range(&ip2nets.ip2nets_ip_ranges,
3441                                                       item->cy_valuestring);
3442
3443                         if (rc != LUSTRE_CFG_RC_NO_ERR)
3444                                 goto out;
3445
3446                         item = item->cy_next;
3447                 }
3448         }
3449
3450         found = yaml_extract_tunables(tree, &tunables, &global_cpts,
3451                                       LNET_NETTYP(ip2nets.ip2nets_net.nw_id));
3452
3453         rc = lustre_lnet_config_ip2nets(&ip2nets,
3454                         (found) ? &tunables : NULL,
3455                         global_cpts,
3456                         (seq_no) ? seq_no->cy_valueint : -1,
3457                         err_rc);
3458
3459         /*
3460          * don't stop because there was no match. Continue processing the
3461          * rest of the rules. If non-match then nothing is configured
3462          */
3463         if (rc == LUSTRE_CFG_RC_NO_MATCH)
3464                 rc = LUSTRE_CFG_RC_NO_ERR;
3465 out:
3466         list_for_each_entry_safe(intf_descr, intf_tmp,
3467                                  &ip2nets.ip2nets_net.nw_intflist,
3468                                  intf_on_network) {
3469                 list_del(&intf_descr->intf_on_network);
3470                 free_intf_descr(intf_descr);
3471         }
3472
3473         list_for_each_entry_safe(ip_range_descr, tmp,
3474                                  &ip2nets.ip2nets_ip_ranges,
3475                                  ipr_entry) {
3476                 list_del(&ip_range_descr->ipr_entry);
3477                 list_for_each_entry_safe(el, el_tmp, &ip_range_descr->ipr_expr,
3478                                          el_link) {
3479                         list_del(&el->el_link);
3480                         cfs_expr_list_free(el);
3481                 }
3482                 free(ip_range_descr);
3483         }
3484
3485         return rc;
3486 }
3487
3488 static int handle_yaml_del_ni(struct cYAML *tree, struct cYAML **show_rc,
3489                               struct cYAML **err_rc)
3490 {
3491         struct cYAML *net = NULL, *intf = NULL, *seq_no = NULL, *item = NULL,
3492                      *local_nis = NULL;
3493         int num_entries, rc;
3494         struct lnet_dlc_network_descr nw_descr;
3495
3496         INIT_LIST_HEAD(&nw_descr.network_on_rule);
3497         INIT_LIST_HEAD(&nw_descr.nw_intflist);
3498
3499         net = cYAML_get_object_item(tree, "net type");
3500         if (net != NULL)
3501                 nw_descr.nw_id = libcfs_str2net(net->cy_valuestring);
3502
3503         local_nis = cYAML_get_object_item(tree, "local NI(s)");
3504         if (local_nis == NULL)
3505                 return LUSTRE_CFG_RC_MISSING_PARAM;
3506
3507         if (!cYAML_is_sequence(local_nis))
3508                 return LUSTRE_CFG_RC_BAD_PARAM;
3509
3510         while (cYAML_get_next_seq_item(local_nis, &item) != NULL) {
3511                 intf = cYAML_get_object_item(item, "interfaces");
3512                 if (intf == NULL)
3513                         continue;
3514                 num_entries = yaml_copy_intf_info(intf, &nw_descr);
3515                 if (num_entries <= 0) {
3516                         cYAML_build_error(num_entries, -1, "ni", "add",
3517                                         "bad interface list",
3518                                         err_rc);
3519                         return LUSTRE_CFG_RC_BAD_PARAM;
3520                 }
3521         }
3522
3523         seq_no = cYAML_get_object_item(tree, "seq_no");
3524
3525         rc = lustre_lnet_del_ni((net) ? &nw_descr : NULL,
3526                                 (seq_no) ? seq_no->cy_valueint : -1,
3527                                 err_rc);
3528
3529         return rc;
3530 }
3531
3532 static int yaml_copy_peer_nids(struct cYAML *tree, char ***nidsppp, bool del)
3533 {
3534         struct cYAML *nids_entry = NULL, *child = NULL, *entry = NULL,
3535                      *prim_nid = NULL;
3536         char **nids = NULL;
3537         int num = 0, rc = LUSTRE_CFG_RC_NO_ERR;
3538
3539         prim_nid = cYAML_get_object_item(tree, "primary nid");
3540         if (!prim_nid || !prim_nid->cy_valuestring)
3541                 return LUSTRE_CFG_RC_MISSING_PARAM;
3542
3543         nids_entry = cYAML_get_object_item(tree, "peer ni");
3544         if (cYAML_is_sequence(nids_entry)) {
3545                 while (cYAML_get_next_seq_item(nids_entry, &child)) {
3546                         entry = cYAML_get_object_item(child, "nid");
3547                         /* don't count an empty entry */
3548                         if (!entry || !entry->cy_valuestring)
3549                                 continue;
3550
3551                         if ((strcmp(entry->cy_valuestring, prim_nid->cy_valuestring)
3552                                         == 0) && del) {
3553                                 /*
3554                                  * primary nid is present in the list of
3555                                  * nids so that means we want to delete
3556                                  * the entire peer, so no need to go
3557                                  * further. Just delete the entire peer.
3558                                  */
3559                                 return 0;
3560                         }
3561
3562                         num++;
3563                 }
3564         }
3565
3566         if (num == 0)
3567                 return LUSTRE_CFG_RC_MISSING_PARAM;
3568
3569         nids = calloc(sizeof(*nids) * num, 1);
3570         if (nids == NULL)
3571                 return LUSTRE_CFG_RC_OUT_OF_MEM;
3572
3573         /* now grab all the nids */
3574         num = 0;
3575         child = NULL;
3576         while (cYAML_get_next_seq_item(nids_entry, &child)) {
3577                 entry = cYAML_get_object_item(child, "nid");
3578                 if (!entry || !entry->cy_valuestring)
3579                         continue;
3580
3581                 nids[num] = calloc(strlen(entry->cy_valuestring) + 1, 1);
3582                 if (!nids[num]) {
3583                         rc = LUSTRE_CFG_RC_OUT_OF_MEM;
3584                         goto failed;
3585                 }
3586                 strncpy(nids[num], entry->cy_valuestring,
3587                         strlen(entry->cy_valuestring));
3588                 num++;
3589         }
3590         rc = num;
3591
3592         *nidsppp = nids;
3593         return rc;
3594
3595 failed:
3596         if (nids != NULL)
3597                 yaml_free_string_array(nids, num);
3598         *nidsppp = NULL;
3599         return rc;
3600 }
3601
3602 static int handle_yaml_config_peer(struct cYAML *tree, struct cYAML **show_rc,
3603                                    struct cYAML **err_rc)
3604 {
3605         char **nids = NULL;
3606         int num, rc;
3607         struct cYAML *seq_no, *prim_nid, *non_mr;
3608
3609         num = yaml_copy_peer_nids(tree, &nids, false);
3610         if (num < 0)
3611                 return num;
3612
3613         seq_no = cYAML_get_object_item(tree, "seq_no");
3614         prim_nid = cYAML_get_object_item(tree, "primary nid");
3615         non_mr = cYAML_get_object_item(tree, "non_mr");
3616
3617         rc = lustre_lnet_config_peer_nid((prim_nid) ? prim_nid->cy_valuestring : NULL,
3618                                          nids, num,
3619                                          (non_mr) ? false : true,
3620                                          (seq_no) ? seq_no->cy_valueint : -1,
3621                                          err_rc);
3622
3623         yaml_free_string_array(nids, num);
3624         return rc;
3625 }
3626
3627 static int handle_yaml_del_peer(struct cYAML *tree, struct cYAML **show_rc,
3628                                 struct cYAML **err_rc)
3629 {
3630         char **nids = NULL;
3631         int num, rc;
3632         struct cYAML *seq_no, *prim_nid;
3633
3634         num = yaml_copy_peer_nids(tree, &nids, true);
3635         if (num < 0)
3636                 return num;
3637
3638         seq_no = cYAML_get_object_item(tree, "seq_no");
3639         prim_nid = cYAML_get_object_item(tree, "primary nid");
3640
3641         rc = lustre_lnet_del_peer_nid((prim_nid) ? prim_nid->cy_valuestring : NULL,
3642                                       nids, num,
3643                                       (seq_no) ? seq_no->cy_valueint : -1,
3644                                       err_rc);
3645
3646         yaml_free_string_array(nids, num);
3647         return rc;
3648 }
3649
3650 static int handle_yaml_config_buffers(struct cYAML *tree,
3651                                       struct cYAML **show_rc,
3652                                       struct cYAML **err_rc)
3653 {
3654         int rc;
3655         struct cYAML *tiny, *small, *large, *seq_no;
3656
3657         tiny = cYAML_get_object_item(tree, "tiny");
3658         small = cYAML_get_object_item(tree, "small");
3659         large = cYAML_get_object_item(tree, "large");
3660         seq_no = cYAML_get_object_item(tree, "seq_no");
3661
3662         rc = lustre_lnet_config_buffers((tiny) ? tiny->cy_valueint : -1,
3663                                         (small) ? small->cy_valueint : -1,
3664                                         (large) ? large->cy_valueint : -1,
3665                                         (seq_no) ? seq_no->cy_valueint : -1,
3666                                         err_rc);
3667
3668         return rc;
3669 }
3670
3671 static int handle_yaml_config_routing(struct cYAML *tree,
3672                                       struct cYAML **show_rc,
3673                                       struct cYAML **err_rc)
3674 {
3675         int rc = LUSTRE_CFG_RC_NO_ERR;
3676         struct cYAML *seq_no, *enable;
3677
3678         seq_no = cYAML_get_object_item(tree, "seq_no");
3679         enable = cYAML_get_object_item(tree, "enable");
3680
3681         if (enable) {
3682                 rc = lustre_lnet_enable_routing(enable->cy_valueint,
3683                                                 (seq_no) ?
3684                                                     seq_no->cy_valueint : -1,
3685                                                 err_rc);
3686         }
3687
3688         return rc;
3689 }
3690
3691 static int handle_yaml_del_route(struct cYAML *tree, struct cYAML **show_rc,
3692                                  struct cYAML **err_rc)
3693 {
3694         struct cYAML *net;
3695         struct cYAML *gw;
3696         struct cYAML *seq_no;
3697
3698         net = cYAML_get_object_item(tree, "net");
3699         gw = cYAML_get_object_item(tree, "gateway");
3700         seq_no = cYAML_get_object_item(tree, "seq_no");
3701
3702         return lustre_lnet_del_route((net) ? net->cy_valuestring : NULL,
3703                                      (gw) ? gw->cy_valuestring : NULL,
3704                                      (seq_no) ? seq_no->cy_valueint : -1,
3705                                      err_rc);
3706 }
3707
3708 static int handle_yaml_del_routing(struct cYAML *tree, struct cYAML **show_rc,
3709                                    struct cYAML **err_rc)
3710 {
3711         struct cYAML *seq_no;
3712
3713         seq_no = cYAML_get_object_item(tree, "seq_no");
3714
3715         return lustre_lnet_enable_routing(0, (seq_no) ?
3716                                                 seq_no->cy_valueint : -1,
3717                                         err_rc);
3718 }
3719
3720 static int handle_yaml_show_route(struct cYAML *tree, struct cYAML **show_rc,
3721                                   struct cYAML **err_rc)
3722 {
3723         struct cYAML *net;
3724         struct cYAML *gw;
3725         struct cYAML *hop;
3726         struct cYAML *prio;
3727         struct cYAML *detail;
3728         struct cYAML *seq_no;
3729
3730         net = cYAML_get_object_item(tree, "net");
3731         gw = cYAML_get_object_item(tree, "gateway");
3732         hop = cYAML_get_object_item(tree, "hop");
3733         prio = cYAML_get_object_item(tree, "priority");
3734         detail = cYAML_get_object_item(tree, "detail");
3735         seq_no = cYAML_get_object_item(tree, "seq_no");
3736
3737         return lustre_lnet_show_route((net) ? net->cy_valuestring : NULL,
3738                                       (gw) ? gw->cy_valuestring : NULL,
3739                                       (hop) ? hop->cy_valueint : -1,
3740                                       (prio) ? prio->cy_valueint : -1,
3741                                       (detail) ? detail->cy_valueint : 0,
3742                                       (seq_no) ? seq_no->cy_valueint : -1,
3743                                       show_rc, err_rc, false);
3744 }
3745
3746 static int handle_yaml_show_net(struct cYAML *tree, struct cYAML **show_rc,
3747                                 struct cYAML **err_rc)
3748 {
3749         struct cYAML *net, *detail, *seq_no;
3750
3751         net = cYAML_get_object_item(tree, "net");
3752         detail = cYAML_get_object_item(tree, "detail");
3753         seq_no = cYAML_get_object_item(tree, "seq_no");
3754
3755         return lustre_lnet_show_net((net) ? net->cy_valuestring : NULL,
3756                                     (detail) ? detail->cy_valueint : 0,
3757                                     (seq_no) ? seq_no->cy_valueint : -1,
3758                                     show_rc, err_rc, false);
3759 }
3760
3761 static int handle_yaml_show_routing(struct cYAML *tree, struct cYAML **show_rc,
3762                                     struct cYAML **err_rc)
3763 {
3764         struct cYAML *seq_no;
3765
3766         seq_no = cYAML_get_object_item(tree, "seq_no");
3767
3768         return lustre_lnet_show_routing((seq_no) ? seq_no->cy_valueint : -1,
3769                                         show_rc, err_rc, false);
3770 }
3771
3772 static int handle_yaml_show_peers(struct cYAML *tree, struct cYAML **show_rc,
3773                                   struct cYAML **err_rc)
3774 {
3775         struct cYAML *seq_no, *nid, *detail;
3776
3777         seq_no = cYAML_get_object_item(tree, "seq_no");
3778         detail = cYAML_get_object_item(tree, "detail");
3779         nid = cYAML_get_object_item(tree, "nid");
3780
3781         return lustre_lnet_show_peer((nid) ? nid->cy_valuestring : NULL,
3782                                      (detail) ? detail->cy_valueint : 0,
3783                                      (seq_no) ? seq_no->cy_valueint : -1,
3784                                      show_rc, err_rc, false);
3785 }
3786
3787 static int handle_yaml_show_stats(struct cYAML *tree, struct cYAML **show_rc,
3788                                   struct cYAML **err_rc)
3789 {
3790         struct cYAML *seq_no;
3791
3792         seq_no = cYAML_get_object_item(tree, "seq_no");
3793
3794         return lustre_lnet_show_stats((seq_no) ? seq_no->cy_valueint : -1,
3795                                       show_rc, err_rc);
3796 }
3797
3798 static int handle_yaml_config_numa(struct cYAML *tree, struct cYAML **show_rc,
3799                                   struct cYAML **err_rc)
3800 {
3801         struct cYAML *seq_no, *range;
3802
3803         seq_no = cYAML_get_object_item(tree, "seq_no");
3804         range = cYAML_get_object_item(tree, "range");
3805
3806         return lustre_lnet_config_numa_range(range ? range->cy_valueint : -1,
3807                                              seq_no ? seq_no->cy_valueint : -1,
3808                                              err_rc);
3809 }
3810
3811 static int handle_yaml_del_numa(struct cYAML *tree, struct cYAML **show_rc,
3812                                struct cYAML **err_rc)
3813 {
3814         struct cYAML *seq_no;
3815
3816         seq_no = cYAML_get_object_item(tree, "seq_no");
3817
3818         return lustre_lnet_config_numa_range(0, seq_no ? seq_no->cy_valueint : -1,
3819                                              err_rc);
3820 }
3821
3822 static int handle_yaml_show_numa(struct cYAML *tree, struct cYAML **show_rc,
3823                                 struct cYAML **err_rc)
3824 {
3825         struct cYAML *seq_no;
3826
3827         seq_no = cYAML_get_object_item(tree, "seq_no");
3828
3829         return lustre_lnet_show_numa_range(seq_no ? seq_no->cy_valueint : -1,
3830                                            show_rc, err_rc);
3831 }
3832
3833 static int handle_yaml_config_global_settings(struct cYAML *tree,
3834                                               struct cYAML **show_rc,
3835                                               struct cYAML **err_rc)
3836 {
3837         struct cYAML *max_intf, *numa, *discovery, *seq_no;
3838         int rc = 0;
3839
3840         seq_no = cYAML_get_object_item(tree, "seq_no");
3841         max_intf = cYAML_get_object_item(tree, "max_intf");
3842         if (max_intf)
3843                 rc = lustre_lnet_config_max_intf(max_intf->cy_valueint,
3844                                                  seq_no ? seq_no->cy_valueint
3845                                                         : -1,
3846                                                  err_rc);
3847
3848         numa = cYAML_get_object_item(tree, "numa_range");
3849         if (numa)
3850                 rc = lustre_lnet_config_numa_range(numa->cy_valueint,
3851                                                    seq_no ? seq_no->cy_valueint
3852                                                         : -1,
3853                                                    err_rc);
3854
3855         discovery = cYAML_get_object_item(tree, "discovery");
3856         if (discovery)
3857                 rc = lustre_lnet_config_discovery(discovery->cy_valueint,
3858                                                   seq_no ? seq_no->cy_valueint
3859                                                         : -1,
3860                                                   err_rc);
3861
3862         return rc;
3863 }
3864
3865 static int handle_yaml_del_global_settings(struct cYAML *tree,
3866                                            struct cYAML **show_rc,
3867                                            struct cYAML **err_rc)
3868 {
3869         struct cYAML *max_intf, *numa, *discovery, *seq_no;
3870         int rc = 0;
3871
3872         seq_no = cYAML_get_object_item(tree, "seq_no");
3873         max_intf = cYAML_get_object_item(tree, "max_intf");
3874         if (max_intf)
3875                 rc = lustre_lnet_config_max_intf(LNET_INTERFACES_MAX_DEFAULT,
3876                                                  seq_no ? seq_no->cy_valueint
3877                                                         : -1,
3878                                                  err_rc);
3879
3880         numa = cYAML_get_object_item(tree, "numa_range");
3881         if (numa)
3882                 rc = lustre_lnet_config_numa_range(0,
3883                                                    seq_no ? seq_no->cy_valueint
3884                                                         : -1,
3885                                                    err_rc);
3886
3887         /* peer discovery is enabled by default */
3888         discovery = cYAML_get_object_item(tree, "discovery");
3889         if (discovery)
3890                 rc = lustre_lnet_config_discovery(1,
3891                                                   seq_no ? seq_no->cy_valueint
3892                                                         : -1,
3893                                                   err_rc);
3894
3895         return rc;
3896 }
3897
3898 static int handle_yaml_show_global_settings(struct cYAML *tree,
3899                                             struct cYAML **show_rc,
3900                                             struct cYAML **err_rc)
3901 {
3902         struct cYAML *max_intf, *numa, *discovery, *seq_no;
3903         int rc = 0;
3904
3905         seq_no = cYAML_get_object_item(tree, "seq_no");
3906         max_intf = cYAML_get_object_item(tree, "max_intf");
3907         if (max_intf)
3908                 rc = lustre_lnet_show_max_intf(seq_no ? seq_no->cy_valueint
3909                                                         : -1,
3910                                                 show_rc, err_rc);
3911
3912         numa = cYAML_get_object_item(tree, "numa_range");
3913         if (numa)
3914                 rc = lustre_lnet_show_numa_range(seq_no ? seq_no->cy_valueint
3915                                                         : -1,
3916                                                  show_rc, err_rc);
3917
3918         discovery = cYAML_get_object_item(tree, "discovery");
3919         if (discovery)
3920                 rc = lustre_lnet_show_discovery(seq_no ? seq_no->cy_valueint
3921                                                         : -1,
3922                                                 show_rc, err_rc);
3923
3924         return rc;
3925 }
3926
3927 static int handle_yaml_ping(struct cYAML *tree, struct cYAML **show_rc,
3928                             struct cYAML **err_rc)
3929 {
3930         struct cYAML *seq_no, *nid, *timeout;
3931
3932         seq_no = cYAML_get_object_item(tree, "seq_no");
3933         nid = cYAML_get_object_item(tree, "primary nid");
3934         timeout = cYAML_get_object_item(tree, "timeout");
3935
3936         return lustre_lnet_ping_nid((nid) ? nid->cy_valuestring : NULL,
3937                                     (timeout) ? timeout->cy_valueint : 1000,
3938                                     (seq_no) ? seq_no->cy_valueint : -1,
3939                                     show_rc, err_rc);
3940 }
3941
3942 static int handle_yaml_discover(struct cYAML *tree, struct cYAML **show_rc,
3943                                 struct cYAML **err_rc)
3944 {
3945         struct cYAML *seq_no, *nid, *force;
3946
3947         seq_no = cYAML_get_object_item(tree, "seq_no");
3948         nid = cYAML_get_object_item(tree, "primary nid");
3949         force = cYAML_get_object_item(tree, "force");
3950
3951         return lustre_lnet_discover_nid((nid) ? nid->cy_valuestring : NULL,
3952                                         (force) ? force->cy_valueint : 0,
3953                                         (seq_no) ? seq_no->cy_valueint : -1,
3954                                         show_rc, err_rc);
3955 }
3956
3957 static int handle_yaml_no_op()
3958 {
3959         return LUSTRE_CFG_RC_NO_ERR;
3960 }
3961
3962 struct lookup_cmd_hdlr_tbl {
3963         char *name;
3964         cmd_handler_t cb;
3965 };
3966
3967 static struct lookup_cmd_hdlr_tbl lookup_config_tbl[] = {
3968         { .name = "route",      .cb = handle_yaml_config_route },
3969         { .name = "net",        .cb = handle_yaml_config_ni },
3970         { .name = "ip2nets",    .cb = handle_yaml_config_ip2nets },
3971         { .name = "peer",       .cb = handle_yaml_config_peer },
3972         { .name = "routing",    .cb = handle_yaml_config_routing },
3973         { .name = "buffers",    .cb = handle_yaml_config_buffers },
3974         { .name = "statistics", .cb = handle_yaml_no_op },
3975         { .name = "global",     .cb = handle_yaml_config_global_settings},
3976         { .name = "numa",       .cb = handle_yaml_config_numa },
3977         { .name = "ping",       .cb = handle_yaml_no_op },
3978         { .name = "discover",   .cb = handle_yaml_no_op },
3979         { .name = NULL } };
3980
3981 static struct lookup_cmd_hdlr_tbl lookup_del_tbl[] = {
3982         { .name = "route",      .cb = handle_yaml_del_route },
3983         { .name = "net",        .cb = handle_yaml_del_ni },
3984         { .name = "ip2nets",    .cb = handle_yaml_no_op },
3985         { .name = "peer",       .cb = handle_yaml_del_peer },
3986         { .name = "routing",    .cb = handle_yaml_del_routing },
3987         { .name = "buffers",    .cb = handle_yaml_no_op },
3988         { .name = "statistics", .cb = handle_yaml_no_op },
3989         { .name = "global",     .cb = handle_yaml_del_global_settings},
3990         { .name = "numa",       .cb = handle_yaml_del_numa },
3991         { .name = "ping",       .cb = handle_yaml_no_op },
3992         { .name = "discover",   .cb = handle_yaml_no_op },
3993         { .name = NULL } };
3994
3995 static struct lookup_cmd_hdlr_tbl lookup_show_tbl[] = {
3996         { .name = "route",      .cb = handle_yaml_show_route },
3997         { .name = "net",        .cb = handle_yaml_show_net },
3998         { .name = "peer",       .cb = handle_yaml_show_peers },
3999         { .name = "ip2nets",    .cb = handle_yaml_no_op },
4000         { .name = "routing",    .cb = handle_yaml_show_routing },
4001         { .name = "buffers",    .cb = handle_yaml_show_routing },
4002         { .name = "statistics", .cb = handle_yaml_show_stats },
4003         { .name = "global",     .cb = handle_yaml_show_global_settings},
4004         { .name = "numa",       .cb = handle_yaml_show_numa },
4005         { .name = "ping",       .cb = handle_yaml_no_op },
4006         { .name = "discover",   .cb = handle_yaml_no_op },
4007         { .name = NULL } };
4008
4009 static struct lookup_cmd_hdlr_tbl lookup_exec_tbl[] = {
4010         { .name = "route",      .cb = handle_yaml_no_op },
4011         { .name = "net",        .cb = handle_yaml_no_op },
4012         { .name = "peer",       .cb = handle_yaml_no_op },
4013         { .name = "ip2nets",    .cb = handle_yaml_no_op },
4014         { .name = "routing",    .cb = handle_yaml_no_op },
4015         { .name = "buffers",    .cb = handle_yaml_no_op },
4016         { .name = "statistics", .cb = handle_yaml_no_op },
4017         { .name = "global",     .cb = handle_yaml_no_op },
4018         { .name = "numa",       .cb = handle_yaml_no_op },
4019         { .name = "ping",       .cb = handle_yaml_ping },
4020         { .name = "discover",   .cb = handle_yaml_discover },
4021         { .name = NULL } };
4022
4023 static cmd_handler_t lookup_fn(char *key,
4024                                struct lookup_cmd_hdlr_tbl *tbl)
4025 {
4026         int i;
4027         if (key == NULL)
4028                 return NULL;
4029
4030         for (i = 0; tbl[i].name != NULL; i++) {
4031                 if (strncmp(key, tbl[i].name, strlen(tbl[i].name)) == 0)
4032                         return tbl[i].cb;
4033         }
4034
4035         return NULL;
4036 }
4037
4038 static int lustre_yaml_cb_helper(char *f, struct lookup_cmd_hdlr_tbl *table,
4039                                  struct cYAML **show_rc, struct cYAML **err_rc)
4040 {
4041         struct cYAML *tree, *item = NULL, *head, *child;
4042         cmd_handler_t cb;
4043         char err_str[LNET_MAX_STR_LEN];
4044         int rc = LUSTRE_CFG_RC_NO_ERR, return_rc = LUSTRE_CFG_RC_NO_ERR;
4045
4046         tree = cYAML_build_tree(f, NULL, 0, err_rc, false);
4047         if (tree == NULL)
4048                 return LUSTRE_CFG_RC_BAD_PARAM;
4049
4050         child = tree->cy_child;
4051         while (child != NULL) {
4052                 cb = lookup_fn(child->cy_string, table);
4053                 if (cb == NULL) {
4054                         snprintf(err_str, sizeof(err_str),
4055                                 "\"call back for '%s' not found\"",
4056                                 child->cy_string);
4057                         cYAML_build_error(LUSTRE_CFG_RC_BAD_PARAM, -1,
4058                                         "yaml", "helper", err_str, err_rc);
4059                         goto out;
4060                 }
4061
4062                 if (cYAML_is_sequence(child)) {
4063                         while ((head = cYAML_get_next_seq_item(child, &item))
4064                                != NULL) {
4065                                 rc = cb(head, show_rc, err_rc);
4066                                 if (rc != LUSTRE_CFG_RC_NO_ERR)
4067                                         return_rc = rc;
4068                         }
4069                 } else {
4070                         rc = cb(child, show_rc, err_rc);
4071                         if (rc != LUSTRE_CFG_RC_NO_ERR)
4072                                 return_rc = rc;
4073                 }
4074                 item = NULL;
4075                 child = child->cy_next;
4076         }
4077
4078 out:
4079         cYAML_free_tree(tree);
4080
4081         return return_rc;
4082 }
4083
4084 int lustre_yaml_config(char *f, struct cYAML **err_rc)
4085 {
4086         return lustre_yaml_cb_helper(f, lookup_config_tbl,
4087                                      NULL, err_rc);
4088 }
4089
4090 int lustre_yaml_del(char *f, struct cYAML **err_rc)
4091 {
4092         return lustre_yaml_cb_helper(f, lookup_del_tbl,
4093                                      NULL, err_rc);
4094 }
4095
4096 int lustre_yaml_show(char *f, struct cYAML **show_rc, struct cYAML **err_rc)
4097 {
4098         return lustre_yaml_cb_helper(f, lookup_show_tbl,
4099                                      show_rc, err_rc);
4100 }
4101
4102 int lustre_yaml_exec(char *f, struct cYAML **show_rc, struct cYAML **err_rc)
4103 {
4104         return lustre_yaml_cb_helper(f, lookup_exec_tbl,
4105                                      show_rc, err_rc);
4106 }