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, 2016, 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 <sys/ioctl.h>
  44 #include <net/if.h>
  45 #include <libcfs/util/ioctl.h>
  46 #include <lnet/lnetctl.h>
  47 #include <lnet/socklnd.h>
  48 #include "liblnd.h"
  49 #include <lnet/lnet.h>
  50 #include <libcfs/libcfs_string.h>
  51 #include <sys/types.h>
  52 #include <ifaddrs.h>
  53 #include "liblnetconfig.h"
  54 #include "cyaml.h"
  55
  56 #define CONFIG_CMD              "configure"
  57 #define UNCONFIG_CMD            "unconfigure"
  58 #define ADD_CMD                 "add"
  59 #define DEL_CMD                 "del"
  60 #define SHOW_CMD                "show"
  61 #define DBG_CMD                 "dbg"
  62
  63 /*
  64  * lustre_lnet_ip_range_descr
  65  *      Describes an IP range.
  66  *      Each octect is an expression
  67  */
  68 struct lustre_lnet_ip_range_descr {
  69         struct list_head ipr_entry;
  70         struct list_head ipr_expr;
  71 };
  72
  73 /*
  74  * lustre_lnet_ip2nets
  75  *      Describes an ip2nets rule. This can be on a list of rules.
  76  */
  77 struct lustre_lnet_ip2nets {
  78         struct lnet_dlc_network_descr ip2nets_net;
  79         struct list_head ip2nets_ip_ranges;
  80 };
  81
  82 /*
  83  * lustre_lnet_add_ip_range
  84  * Formatting:
  85  *      given a string of the format:
  86  *      <expr.expr.expr.expr> parse each expr into
  87  *      a lustre_lnet_ip_range_descr structure and insert on the list.
  88  *
  89  *      This function is called from
  90  *              YAML on each ip-range.
  91  *              As a result of lnetctl command
  92  *              When building a NID or P2P selection rules
  93  */
  94 int lustre_lnet_add_ip_range(struct list_head *list, char *str_ip_range)
  95 {
  96         struct lustre_lnet_ip_range_descr *ip_range;
  97         int rc;
  98
  99         ip_range = calloc(1, sizeof(*ip_range));
 100         if (ip_range == NULL)
 101                 return LUSTRE_CFG_RC_OUT_OF_MEM;
 102
 103         INIT_LIST_HEAD(&ip_range->ipr_entry);
 104         INIT_LIST_HEAD(&ip_range->ipr_expr);
 105
 106         rc = cfs_ip_addr_parse(str_ip_range, strlen(str_ip_range),
 107                                &ip_range->ipr_expr);
 108         if (rc != 0)
 109                 return LUSTRE_CFG_RC_BAD_PARAM;
 110
 111         list_add_tail(&ip_range->ipr_entry, list);
 112
 113         return LUSTRE_CFG_RC_NO_ERR;
 114 }
 115
 116 int lustre_lnet_add_intf_descr(struct list_head *list, char *intf, int len)
 117 {
 118         char *open_sq_bracket = NULL, *close_sq_bracket = NULL,
 119              *intf_name;
 120         struct lnet_dlc_intf_descr *intf_descr = NULL;
 121         int rc;
 122         char intf_string[LNET_MAX_STR_LEN];
 123
 124         if (len >= LNET_MAX_STR_LEN)
 125                 return LUSTRE_CFG_RC_BAD_PARAM;
 126
 127         strncpy(intf_string, intf, len);
 128         intf_string[len] = '\0';
 129
 130         intf_descr = calloc(1, sizeof(*intf_descr));
 131         if (intf_descr == NULL)
 132                 return LUSTRE_CFG_RC_OUT_OF_MEM;
 133
 134         INIT_LIST_HEAD(&intf_descr->intf_on_network);
 135
 136         intf_name = intf_string;
 137         open_sq_bracket = strchr(intf_string, '[');
 138         if (open_sq_bracket != NULL) {
 139                 close_sq_bracket = strchr(intf_string, ']');
 140                 if (close_sq_bracket == NULL) {
 141                         free(intf_descr);
 142                         return LUSTRE_CFG_RC_BAD_PARAM;
 143                 }
 144                 rc = cfs_expr_list_parse(open_sq_bracket,
 145                                          strlen(open_sq_bracket), 0, UINT_MAX,
 146                                          &intf_descr->cpt_expr);
 147                 if (rc < 0) {
 148                         free(intf_descr);
 149                         return LUSTRE_CFG_RC_BAD_PARAM;
 150                 }
 151                 strncpy(intf_descr->intf_name, intf_name,
 152                         open_sq_bracket - intf_name);
 153                 intf_descr->intf_name[open_sq_bracket - intf_name] = '\0';
 154         } else {
 155                 strcpy(intf_descr->intf_name, intf_name);
 156                 intf_descr->cpt_expr = NULL;
 157         }
 158
 159         list_add_tail(&intf_descr->intf_on_network, list);
 160
 161         return LUSTRE_CFG_RC_NO_ERR;
 162 }
 163
 164 void lustre_lnet_init_nw_descr(struct lnet_dlc_network_descr *nw_descr)
 165 {
 166         if (nw_descr != NULL) {
 167                 INIT_LIST_HEAD(&nw_descr->network_on_rule);
 168                 INIT_LIST_HEAD(&nw_descr->nw_intflist);
 169         }
 170 }
 171
 172 /*
 173  * format expected:
 174  *      <intf>[<expr>], <intf>[<expr>],..
 175  */
 176 int lustre_lnet_parse_interfaces(char *intf_str,
 177                                  struct lnet_dlc_network_descr *nw_descr)
 178 {
 179         char *open_square;
 180         char *close_square;
 181         char *comma;
 182         char *cur = intf_str, *next = NULL;
 183         char *end = intf_str + strlen(intf_str);
 184         int rc, len;
 185         struct lnet_dlc_intf_descr *intf_descr, *tmp;
 186
 187         if (nw_descr == NULL)
 188                 return LUSTRE_CFG_RC_BAD_PARAM;
 189
 190         while (cur < end) {
 191                 open_square = strchr(cur, '[');
 192                 if (open_square != NULL) {
 193                         close_square = strchr(cur, ']');
 194                         if (close_square == NULL) {
 195                                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 196                                 goto failed;
 197                         }
 198
 199                         comma = strchr(cur, ',');
 200                         if (comma != NULL && comma > close_square) {
 201                                 next = comma + 1;
 202                                 len = next - close_square;
 203                         } else {
 204                                 len = strlen(cur);
 205                                 next = cur + len;
 206                         }
 207                 } else {
 208                         comma = strchr(cur, ',');
 209                         if (comma != NULL) {
 210                                 next = comma + 1;
 211                                 len = comma - cur;
 212                         } else {
 213                                 len = strlen(cur);
 214                                 next = cur + len;
 215                         }
 216                 }
 217
 218                 rc = lustre_lnet_add_intf_descr(&nw_descr->nw_intflist, cur, len);
 219                 if (rc != LUSTRE_CFG_RC_NO_ERR)
 220                         goto failed;
 221
 222                 cur = next;
 223         }
 224
 225         return LUSTRE_CFG_RC_NO_ERR;
 226
 227 failed:
 228         list_for_each_entry_safe(intf_descr, tmp, &nw_descr->nw_intflist,
 229                                  intf_on_network) {
 230                 if (intf_descr->cpt_expr != NULL)
 231                         cfs_expr_list_free(intf_descr->cpt_expr);
 232                 free(intf_descr);
 233         }
 234
 235         return rc;
 236 }
 237
 238 int lustre_lnet_config_lib_init(void)
 239 {
 240         return register_ioc_dev(LNET_DEV_ID, LNET_DEV_PATH,
 241                                 LNET_DEV_MAJOR, LNET_DEV_MINOR);
 242 }
 243
 244 void lustre_lnet_config_lib_uninit(void)
 245 {
 246         unregister_ioc_dev(LNET_DEV_ID);
 247 }
 248
 249 int lustre_lnet_config_ni_system(bool up, bool load_ni_from_mod,
 250                                  int seq_no, struct cYAML **err_rc)
 251 {
 252         struct libcfs_ioctl_data data;
 253         unsigned int opc;
 254         int rc;
 255         char err_str[LNET_MAX_STR_LEN];
 256
 257         snprintf(err_str, sizeof(err_str), "\"Success\"");
 258
 259         LIBCFS_IOC_INIT(data);
 260
 261         /* Reverse logic is used here in order not to change
 262          * the lctl utility */
 263         data.ioc_flags = load_ni_from_mod ? 0 : 1;
 264
 265         opc = up ? IOC_LIBCFS_CONFIGURE : IOC_LIBCFS_UNCONFIGURE;
 266
 267         rc = l_ioctl(LNET_DEV_ID, opc, &data);
 268         if (rc != 0) {
 269                 snprintf(err_str,
 270                         sizeof(err_str),
 271                         "\"LNet %s error: %s\"", (up) ? "configure" :
 272                         "unconfigure", strerror(errno));
 273                 rc = -errno;
 274         }
 275
 276         cYAML_build_error(rc, seq_no, (up) ? CONFIG_CMD : UNCONFIG_CMD,
 277                           "lnet", err_str, err_rc);
 278
 279         return rc;
 280 }
 281
 282 static lnet_nid_t *allocate_create_nid_array(char **nids, char *err_str)
 283 {
 284         lnet_nid_t *array = NULL;
 285         int idx = 0;
 286
 287         if (!nids) {
 288                 snprintf(err_str, LNET_MAX_STR_LEN, "no NIDs to add");
 289                 return NULL;
 290         }
 291
 292         /* count the size of the array */
 293         while (nids[idx] != NULL)
 294                 idx++;
 295
 296         array = calloc(sizeof(*array) * idx + 1, 1);
 297         if (array == NULL) {
 298                 snprintf(err_str, LNET_MAX_STR_LEN, "out of memory");
 299                 return NULL;
 300         }
 301
 302         idx = 0;
 303         while (nids[idx] != NULL) {
 304                 array[idx] = libcfs_str2nid(nids[idx]);
 305                 if (array[idx] == LNET_NID_ANY) {
 306                         free(array);
 307                         snprintf(err_str, LNET_MAX_STR_LEN,
 308                                  "bad NID: '%s'",
 309                                  nids[idx]);
 310                         return NULL;
 311                 }
 312                 idx++;
 313         }
 314
 315         /* identify last entry */
 316         array[idx] = LNET_NID_ANY;
 317
 318         return array;
 319 }
 320
 321 static int dispatch_peer_ni_cmd(lnet_nid_t knid, lnet_nid_t nid, __u32 cmd,
 322                                 struct lnet_ioctl_peer_cfg *data,
 323                                 char *err_str, char *cmd_str)
 324 {
 325         int rc;
 326
 327         data->prcfg_key_nid = knid;
 328         data->prcfg_cfg_nid = nid;
 329
 330         rc = l_ioctl(LNET_DEV_ID, cmd, data);
 331         if (rc != 0) {
 332                 rc = -errno;
 333                 snprintf(err_str,
 334                         LNET_MAX_STR_LEN,
 335                         "\"cannot %s peer ni: %s\"",
 336                         (cmd_str) ? cmd_str : "add", strerror(errno));
 337         }
 338
 339         return rc;
 340 }
 341
 342 int lustre_lnet_config_peer_nid(char *knid, char **nid, int seq_no,
 343                                 struct cYAML **err_rc)
 344 {
 345         struct lnet_ioctl_peer_cfg data;
 346         lnet_nid_t key_nid = LNET_NID_ANY;
 347         int rc = LUSTRE_CFG_RC_NO_ERR;
 348         int idx = 0;
 349         char err_str[LNET_MAX_STR_LEN] = {0};
 350         lnet_nid_t *nids = allocate_create_nid_array(nid, err_str);
 351
 352         if (knid != NULL) {
 353                 key_nid = libcfs_str2nid(knid);
 354                 if (key_nid == LNET_NID_ANY) {
 355                         snprintf(err_str, sizeof(err_str),
 356                                  "bad key NID: '%s'",
 357                                  knid);
 358                         rc = LUSTRE_CFG_RC_MISSING_PARAM;
 359                         goto out;
 360                 }
 361         } else if (nids[0] == LNET_NID_ANY) {
 362                 snprintf(err_str, sizeof(err_str),
 363                          "no NIDs provided for configuration");
 364                 rc = LUSTRE_CFG_RC_MISSING_PARAM;
 365                 goto out;
 366         } else {
 367                 key_nid = LNET_NID_ANY;
 368         }
 369
 370         snprintf(err_str, sizeof(err_str), "\"Success\"");
 371
 372         LIBCFS_IOC_INIT_V2(data, prcfg_hdr);
 373         if (nids[0] == LNET_NID_ANY) {
 374                 rc = dispatch_peer_ni_cmd(LNET_NID_ANY, key_nid,
 375                                           IOC_LIBCFS_ADD_PEER_NI,
 376                                           &data, err_str, "add");
 377                 goto out;
 378         }
 379
 380         while (nids[idx] != LNET_NID_ANY) {
 381                 /*
 382                  * If key_nid is not provided then the first nid in the
 383                  * list becomes the key_nid. First time round the loop use
 384                  * LNET_NID_ANY for the first parameter, then use nid[0]
 385                  * as the key nid after wards
 386                  */
 387                 rc = dispatch_peer_ni_cmd(key_nid, nids[idx],
 388                                           IOC_LIBCFS_ADD_PEER_NI, &data,
 389                                           err_str, "add");
 390
 391                 if (rc != 0)
 392                         goto out;
 393
 394                 if (idx == 0 && key_nid == LNET_NID_ANY)
 395                         key_nid = nids[0];
 396
 397                 idx++;
 398         }
 399
 400 out:
 401         if (nids != NULL)
 402                 free(nids);
 403         cYAML_build_error(rc, seq_no, ADD_CMD, "peer_ni", err_str, err_rc);
 404         return rc;
 405 }
 406
 407 int lustre_lnet_del_peer_nid(char *knid, char **nid, int seq_no,
 408                              struct cYAML **err_rc)
 409 {
 410         struct lnet_ioctl_peer_cfg data;
 411         lnet_nid_t key_nid;
 412         int rc = LUSTRE_CFG_RC_NO_ERR;
 413         int idx = 0;
 414         char err_str[LNET_MAX_STR_LEN] = {0};
 415         lnet_nid_t *nids = allocate_create_nid_array(nid, err_str);
 416
 417         if (knid == NULL) {
 418                 snprintf(err_str, sizeof(err_str),
 419                          "\"Primary nid is not provided\"");
 420                 rc = LUSTRE_CFG_RC_MISSING_PARAM;
 421                 goto out;
 422         } else {
 423                 key_nid = libcfs_str2nid(knid);
 424                 if (key_nid == LNET_NID_ANY) {
 425                         rc = LUSTRE_CFG_RC_BAD_PARAM;
 426                         snprintf(err_str, sizeof(err_str),
 427                                  "bad key NID: '%s'",
 428                                  knid);
 429                         goto out;
 430                 }
 431         }
 432
 433         snprintf(err_str, sizeof(err_str), "\"Success\"");
 434
 435         LIBCFS_IOC_INIT_V2(data, prcfg_hdr);
 436         if (nids[0] == LNET_NID_ANY) {
 437                 rc = dispatch_peer_ni_cmd(key_nid, LNET_NID_ANY,
 438                                           IOC_LIBCFS_DEL_PEER_NI,
 439                                           &data, err_str, "del");
 440                 goto out;
 441         }
 442
 443         while (nids[idx] != LNET_NID_ANY) {
 444                 rc = dispatch_peer_ni_cmd(key_nid, nids[idx],
 445                                           IOC_LIBCFS_DEL_PEER_NI, &data,
 446                                           err_str, "del");
 447
 448                 if (rc != 0)
 449                         goto out;
 450
 451                 idx++;
 452         }
 453
 454 out:
 455         if (nids != NULL)
 456                 free(nids);
 457         cYAML_build_error(rc, seq_no, DEL_CMD, "peer_ni", err_str, err_rc);
 458         return rc;
 459 }
 460
 461 int lustre_lnet_config_route(char *nw, char *gw, int hops, int prio,
 462                              int seq_no, struct cYAML **err_rc)
 463 {
 464         struct lnet_ioctl_config_data data;
 465         lnet_nid_t gateway_nid;
 466         int rc = LUSTRE_CFG_RC_NO_ERR;
 467         __u32 net = LNET_NIDNET(LNET_NID_ANY);
 468         char err_str[LNET_MAX_STR_LEN];
 469
 470         snprintf(err_str, sizeof(err_str), "\"Success\"");
 471
 472         if (nw == NULL || gw == NULL) {
 473                 snprintf(err_str,
 474                          sizeof(err_str),
 475                          "\"missing mandatory parameter(s): '%s'\"",
 476                          (nw == NULL && gw == NULL) ? "network, gateway" :
 477                          (nw == NULL) ? "network" : "gateway");
 478                 rc = LUSTRE_CFG_RC_MISSING_PARAM;
 479                 goto out;
 480         }
 481
 482         net = libcfs_str2net(nw);
 483         if (net == LNET_NIDNET(LNET_NID_ANY)) {
 484                 snprintf(err_str,
 485                          sizeof(err_str),
 486                          "\"cannot parse net %s\"", nw);
 487                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 488                 goto out;
 489         }
 490
 491         if (LNET_NETTYP(net) == CIBLND    ||
 492             LNET_NETTYP(net) == OPENIBLND ||
 493             LNET_NETTYP(net) == IIBLND    ||
 494             LNET_NETTYP(net) == VIBLND) {
 495                 snprintf(err_str,
 496                          sizeof(err_str),
 497                          "\"obselete LNet type '%s'\"", libcfs_lnd2str(net));
 498                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 499                 goto out;
 500         }
 501
 502         gateway_nid = libcfs_str2nid(gw);
 503         if (gateway_nid == LNET_NID_ANY) {
 504                 snprintf(err_str,
 505                         sizeof(err_str),
 506                         "\"cannot parse gateway NID '%s'\"", gw);
 507                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 508                 goto out;
 509         }
 510
 511         if (hops == -1) {
 512                 /* hops is undefined */
 513                 hops = LNET_UNDEFINED_HOPS;
 514         } else if (hops < 1 || hops > 255) {
 515                 snprintf(err_str,
 516                         sizeof(err_str),
 517                         "\"invalid hop count %d, must be between 1 and 255\"",
 518                         hops);
 519                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
 520                 goto out;
 521         }
 522
 523         if (prio == -1) {
 524                 prio = 0;
 525         } else if (prio < 0) {
 526                 snprintf(err_str,
 527                          sizeof(err_str),
 528                         "\"invalid priority %d, must be greater than 0\"",
 529                         prio);
 530                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
 531                 goto out;
 532         }
 533
 534         LIBCFS_IOC_INIT_V2(data, cfg_hdr);
 535         data.cfg_net = net;
 536         data.cfg_config_u.cfg_route.rtr_hop = hops;
 537         data.cfg_config_u.cfg_route.rtr_priority = prio;
 538         data.cfg_nid = gateway_nid;
 539
 540         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_ADD_ROUTE, &data);
 541         if (rc != 0) {
 542                 rc = -errno;
 543                 snprintf(err_str,
 544                          sizeof(err_str),
 545                          "\"cannot add route: %s\"", strerror(errno));
 546                 goto out;
 547         }
 548
 549 out:
 550         cYAML_build_error(rc, seq_no, ADD_CMD, "route", err_str, err_rc);
 551
 552         return rc;
 553 }
 554
 555 int lustre_lnet_del_route(char *nw, char *gw,
 556                           int seq_no, struct cYAML **err_rc)
 557 {
 558         struct lnet_ioctl_config_data data;
 559         lnet_nid_t gateway_nid;
 560         int rc = LUSTRE_CFG_RC_NO_ERR;
 561         __u32 net = LNET_NIDNET(LNET_NID_ANY);
 562         char err_str[LNET_MAX_STR_LEN];
 563
 564         snprintf(err_str, sizeof(err_str), "\"Success\"");
 565
 566         if (nw == NULL || gw == NULL) {
 567                 snprintf(err_str,
 568                          sizeof(err_str),
 569                          "\"missing mandatory parameter(s): '%s'\"",
 570                          (nw == NULL && gw == NULL) ? "network, gateway" :
 571                          (nw == NULL) ? "network" : "gateway");
 572                 rc = LUSTRE_CFG_RC_MISSING_PARAM;
 573                 goto out;
 574         }
 575
 576         net = libcfs_str2net(nw);
 577         if (net == LNET_NIDNET(LNET_NID_ANY)) {
 578                 snprintf(err_str,
 579                          sizeof(err_str),
 580                          "\"cannot parse net '%s'\"", nw);
 581                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 582                 goto out;
 583         }
 584
 585         if (LNET_NETTYP(net) == CIBLND    ||
 586             LNET_NETTYP(net) == OPENIBLND ||
 587             LNET_NETTYP(net) == IIBLND    ||
 588             LNET_NETTYP(net) == VIBLND) {
 589                 snprintf(err_str,
 590                          sizeof(err_str),
 591                          "\"obselete LNet type '%s'\"", libcfs_lnd2str(net));
 592                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 593                 goto out;
 594         }
 595
 596         gateway_nid = libcfs_str2nid(gw);
 597         if (gateway_nid == LNET_NID_ANY) {
 598                 snprintf(err_str,
 599                          sizeof(err_str),
 600                          "\"cannot parse gateway NID '%s'\"", gw);
 601                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 602                 goto out;
 603         }
 604
 605         LIBCFS_IOC_INIT_V2(data, cfg_hdr);
 606         data.cfg_net = net;
 607         data.cfg_nid = gateway_nid;
 608
 609         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_DEL_ROUTE, &data);
 610         if (rc != 0) {
 611                 rc = -errno;
 612                 snprintf(err_str,
 613                          sizeof(err_str),
 614                          "\"cannot delete route: %s\"", strerror(errno));
 615                 goto out;
 616         }
 617
 618 out:
 619         cYAML_build_error(rc, seq_no, DEL_CMD, "route", err_str, err_rc);
 620
 621         return rc;
 622 }
 623
 624 int lustre_lnet_show_route(char *nw, char *gw, int hops, int prio, int detail,
 625                            int seq_no, struct cYAML **show_rc,
 626                            struct cYAML **err_rc)
 627 {
 628         struct lnet_ioctl_config_data data;
 629         lnet_nid_t gateway_nid;
 630         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
 631         int l_errno = 0;
 632         __u32 net = LNET_NIDNET(LNET_NID_ANY);
 633         int i;
 634         struct cYAML *root = NULL, *route = NULL, *item = NULL;
 635         struct cYAML *first_seq = NULL;
 636         char err_str[LNET_MAX_STR_LEN];
 637         bool exist = false;
 638
 639         snprintf(err_str, sizeof(err_str),
 640                  "\"out of memory\"");
 641
 642         if (nw != NULL) {
 643                 net = libcfs_str2net(nw);
 644                 if (net == LNET_NIDNET(LNET_NID_ANY)) {
 645                         snprintf(err_str,
 646                                  sizeof(err_str),
 647                                  "\"cannot parse net '%s'\"", nw);
 648                         rc = LUSTRE_CFG_RC_BAD_PARAM;
 649                         goto out;
 650                 }
 651
 652                 if (LNET_NETTYP(net) == CIBLND    ||
 653                     LNET_NETTYP(net) == OPENIBLND ||
 654                     LNET_NETTYP(net) == IIBLND    ||
 655                     LNET_NETTYP(net) == VIBLND) {
 656                         snprintf(err_str,
 657                                  sizeof(err_str),
 658                                  "\"obsolete LNet type '%s'\"",
 659                                  libcfs_lnd2str(net));
 660                         rc = LUSTRE_CFG_RC_BAD_PARAM;
 661                         goto out;
 662                 }
 663         } else {
 664                 /* show all routes without filtering on net */
 665                 net = LNET_NIDNET(LNET_NID_ANY);
 666         }
 667
 668         if (gw != NULL) {
 669                 gateway_nid = libcfs_str2nid(gw);
 670                 if (gateway_nid == LNET_NID_ANY) {
 671                         snprintf(err_str,
 672                                  sizeof(err_str),
 673                                  "\"cannot parse gateway NID '%s'\"", gw);
 674                         rc = LUSTRE_CFG_RC_BAD_PARAM;
 675                         goto out;
 676                 }
 677         } else
 678                 /* show all routes with out filtering on gateway */
 679                 gateway_nid = LNET_NID_ANY;
 680
 681         if ((hops < 1 && hops != -1) || hops > 255) {
 682                 snprintf(err_str,
 683                          sizeof(err_str),
 684                          "\"invalid hop count %d, must be between 0 and 256\"",
 685                          hops);
 686                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
 687                 goto out;
 688         }
 689
 690         /* create struct cYAML root object */
 691         root = cYAML_create_object(NULL, NULL);
 692         if (root == NULL)
 693                 goto out;
 694
 695         route = cYAML_create_seq(root, "route");
 696         if (route == NULL)
 697                 goto out;
 698
 699         for (i = 0;; i++) {
 700                 LIBCFS_IOC_INIT_V2(data, cfg_hdr);
 701                 data.cfg_count = i;
 702
 703                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_ROUTE, &data);
 704                 if (rc != 0) {
 705                         l_errno = errno;
 706                         break;
 707                 }
 708
 709                 /* filter on provided data */
 710                 if (net != LNET_NIDNET(LNET_NID_ANY) &&
 711                     net != data.cfg_net)
 712                         continue;
 713
 714                 if (gateway_nid != LNET_NID_ANY &&
 715                     gateway_nid != data.cfg_nid)
 716                         continue;
 717
 718                 if (hops != -1 &&
 719                     hops != data.cfg_config_u.cfg_route.rtr_hop)
 720                         continue;
 721
 722                 if (prio != -1 &&
 723                     prio != data.cfg_config_u.cfg_route.rtr_priority)
 724                         continue;
 725
 726                 /* default rc to -1 incase we hit the goto */
 727                 rc = -1;
 728                 exist = true;
 729
 730                 item = cYAML_create_seq_item(route);
 731                 if (item == NULL)
 732                         goto out;
 733
 734                 if (first_seq == NULL)
 735                         first_seq = item;
 736
 737                 if (cYAML_create_string(item, "net",
 738                                         libcfs_net2str(data.cfg_net)) == NULL)
 739                         goto out;
 740
 741                 if (cYAML_create_string(item, "gateway",
 742                                         libcfs_nid2str(data.cfg_nid)) == NULL)
 743                         goto out;
 744
 745                 if (detail) {
 746                         if (cYAML_create_number(item, "hop",
 747                                                 data.cfg_config_u.cfg_route.
 748                                                         rtr_hop) ==
 749                             NULL)
 750                                 goto out;
 751
 752                         if (cYAML_create_number(item, "priority",
 753                                                 data.cfg_config_u.
 754                                                 cfg_route.rtr_priority) == NULL)
 755                                 goto out;
 756
 757                         if (cYAML_create_string(item, "state",
 758                                                 data.cfg_config_u.cfg_route.
 759                                                         rtr_flags ?
 760                                                 "up" : "down") == NULL)
 761                                 goto out;
 762                 }
 763         }
 764
 765         /* print output iff show_rc is not provided */
 766         if (show_rc == NULL)
 767                 cYAML_print_tree(root);
 768
 769         if (l_errno != ENOENT) {
 770                 snprintf(err_str,
 771                          sizeof(err_str),
 772                          "\"cannot get routes: %s\"",
 773                          strerror(l_errno));
 774                 rc = -l_errno;
 775                 goto out;
 776         } else
 777                 rc = LUSTRE_CFG_RC_NO_ERR;
 778
 779         snprintf(err_str, sizeof(err_str), "\"success\"");
 780 out:
 781         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR || !exist) {
 782                 cYAML_free_tree(root);
 783         } else if (show_rc != NULL && *show_rc != NULL) {
 784                 struct cYAML *show_node;
 785                 /* find the route node, if one doesn't exist then
 786                  * insert one.  Otherwise add to the one there
 787                  */
 788                 show_node = cYAML_get_object_item(*show_rc, "route");
 789                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
 790                         cYAML_insert_child(show_node, first_seq);
 791                         free(route);
 792                         free(root);
 793                 } else if (show_node == NULL) {
 794                         cYAML_insert_sibling((*show_rc)->cy_child,
 795                                                 route);
 796                         free(root);
 797                 } else {
 798                         cYAML_free_tree(root);
 799                 }
 800         } else {
 801                 *show_rc = root;
 802         }
 803
 804         cYAML_build_error(rc, seq_no, SHOW_CMD, "route", err_str, err_rc);
 805
 806         return rc;
 807 }
 808
 809 static int socket_intf_query(int request, char *intf,
 810                              struct ifreq *ifr)
 811 {
 812         int rc;
 813         int sockfd;
 814
 815         if (strlen(intf) >= IFNAMSIZ || ifr == NULL)
 816                 return LUSTRE_CFG_RC_BAD_PARAM;
 817
 818         sockfd = socket(AF_INET, SOCK_DGRAM, 0);
 819         if (sockfd < 0)
 820                 return LUSTRE_CFG_RC_BAD_PARAM;
 821
 822         strcpy(ifr->ifr_name, intf);
 823         rc = ioctl(sockfd, request, ifr);
 824         if (rc != 0)
 825                 return LUSTRE_CFG_RC_BAD_PARAM;
 826
 827         return 0;
 828 }
 829
 830 /*
 831  * for each interface in the array of interfaces find the IP address of
 832  * that interface, create its nid and add it to an array of NIDs.
 833  * Stop if any of the interfaces is down
 834  */
 835 static int lustre_lnet_intf2nids(struct lnet_dlc_network_descr *nw,
 836                                  lnet_nid_t **nids, __u32 *nnids)
 837 {
 838         int i = 0, count = 0, rc;
 839         struct ifreq ifr;
 840         __u32 ip;
 841         struct lnet_dlc_intf_descr *intf;
 842
 843         if (nw == NULL || nids == NULL)
 844                 return LUSTRE_CFG_RC_BAD_PARAM;
 845
 846         list_for_each_entry(intf, &nw->nw_intflist, intf_on_network)
 847                 count++;
 848
 849         *nids = calloc(count, sizeof(lnet_nid_t));
 850         if (*nids == NULL)
 851                 return LUSTRE_CFG_RC_OUT_OF_MEM;
 852
 853         list_for_each_entry(intf, &nw->nw_intflist, intf_on_network) {
 854                 memset(&ifr, 0, sizeof(ifr));
 855                 rc = socket_intf_query(SIOCGIFFLAGS, intf->intf_name, &ifr);
 856                 if (rc != 0)
 857                         goto failed;
 858
 859                 if ((ifr.ifr_flags & IFF_UP) == 0) {
 860                         rc = LUSTRE_CFG_RC_BAD_PARAM;
 861                         goto failed;
 862                 }
 863
 864                 memset(&ifr, 0, sizeof(ifr));
 865                 rc = socket_intf_query(SIOCGIFADDR, intf->intf_name, &ifr);
 866                 if (rc != 0)
 867                         goto failed;
 868
 869                 ip = ((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr.s_addr;
 870                 ip = bswap_32(ip);
 871                 (*nids)[i] = LNET_MKNID(nw->nw_id, ip);
 872                 i++;
 873         }
 874
 875         *nnids = count;
 876
 877         return 0;
 878
 879 failed:
 880         free(*nids);
 881         *nids = NULL;
 882         return rc;
 883 }
 884
 885 /*
 886  * called repeatedly until a match or no more ip range
 887  * What do you have?
 888  *      ip_range expression
 889  *      interface list with all the interface names.
 890  *      all the interfaces in the system.
 891  *
 892  *      try to match the ip_range expr to one of the interfaces' IPs in
 893  *      the system. If we hit a patch for an interface. Check if that
 894  *      interface name is in the list.
 895  *
 896  *      If there are more than one interface in the list, then make sure
 897  *      that the IPs for all of these interfaces match the ip ranges
 898  *      given.
 899  *
 900  *      for each interface in intf_list
 901  *              look up the intf name in ifa
 902  *              if not there then no match
 903  *              check ip obtained from ifa against a match to any of the
 904  *              ip_ranges given.
 905  *              If no match, then fail
 906  *
 907  *      The result is that all the interfaces have to match.
 908  */
 909 int lustre_lnet_match_ip_to_intf(struct ifaddrs *ifa,
 910                                  struct list_head *intf_list,
 911                                  struct list_head *ip_ranges)
 912 {
 913         int rc;
 914         __u32 ip;
 915         struct lnet_dlc_intf_descr *intf_descr;
 916         struct ifaddrs *ifaddr = ifa;
 917         struct lustre_lnet_ip_range_descr *ip_range;
 918         int family;
 919
 920         /*
 921          * if there are no explicit interfaces, and no ip ranges, then
 922          * configure the first tcp interface we encounter.
 923          */
 924         if (list_empty(intf_list) && list_empty(ip_ranges)) {
 925                 for (ifaddr = ifa; ifaddr != NULL; ifaddr = ifaddr->ifa_next) {
 926                         if (ifaddr->ifa_addr == NULL)
 927                                 continue;
 928
 929                         if ((ifaddr->ifa_flags & IFF_UP) == 0)
 930                                 continue;
 931
 932                         family = ifaddr->ifa_addr->sa_family;
 933                         if (family == AF_INET) {
 934                                 rc = lustre_lnet_add_intf_descr
 935                                         (intf_list, ifaddr->ifa_name,
 936                                         strlen(ifaddr->ifa_name));
 937
 938                                 if (rc != LUSTRE_CFG_RC_NO_ERR)
 939                                         return rc;
 940
 941                                 return LUSTRE_CFG_RC_MATCH;
 942                         }
 943                 }
 944                 return LUSTRE_CFG_RC_NO_MATCH;
 945         }
 946
 947         /*
 948          * First interface which matches an IP pattern will be used
 949          */
 950         if (list_empty(intf_list)) {
 951                 /*
 952                  * no interfaces provided in the rule, but an ip range is
 953                  * provided, so try and match an interface to the ip
 954                  * range.
 955                  */
 956                 for (ifaddr = ifa; ifaddr != NULL; ifaddr = ifaddr->ifa_next) {
 957                         if (ifaddr->ifa_addr == NULL)
 958                                 continue;
 959
 960                         if ((ifaddr->ifa_flags & IFF_UP) == 0)
 961                                 continue;
 962
 963                         family = ifaddr->ifa_addr->sa_family;
 964                         if (family == AF_INET) {
 965                                 ip = ((struct sockaddr_in *)ifaddr->ifa_addr)->
 966                                         sin_addr.s_addr;
 967
 968                                 list_for_each_entry(ip_range, ip_ranges,
 969                                                     ipr_entry) {
 970                                         rc = cfs_ip_addr_match(bswap_32(ip),
 971                                                         &ip_range->ipr_expr);
 972                                         if (!rc)
 973                                                 continue;
 974
 975                                         rc = lustre_lnet_add_intf_descr
 976                                           (intf_list, ifaddr->ifa_name,
 977                                            strlen(ifaddr->ifa_name));
 978
 979                                         if (rc != LUSTRE_CFG_RC_NO_ERR)
 980                                                 return rc;
 981
 982                                         return LUSTRE_CFG_RC_MATCH;
 983                                 }
 984                         }
 985                 }
 986         }
 987
 988         /*
 989          * If an interface is explicitly specified the ip-range might or
 990          * might not be specified. if specified the interface needs to match the
 991          * ip-range. If no ip-range then the interfaces are
 992          * automatically matched if they are all up.
 993          * If > 1 interfaces all the interfaces must match for the NI to
 994          * be configured.
 995          */
 996         list_for_each_entry(intf_descr, intf_list, intf_on_network) {
 997                 for (ifaddr = ifa; ifaddr != NULL; ifaddr = ifaddr->ifa_next) {
 998                         if (ifaddr->ifa_addr == NULL)
 999                                 continue;
1000
1001                         family = ifaddr->ifa_addr->sa_family;
1002                         if (family == AF_INET &&
1003                             strcmp(intf_descr->intf_name,
1004                                    ifaddr->ifa_name) == 0)
1005                                 break;
1006                 }
1007
1008                 if (ifaddr == NULL)
1009                         return LUSTRE_CFG_RC_NO_MATCH;
1010
1011                 if ((ifaddr->ifa_flags & IFF_UP) == 0)
1012                         return LUSTRE_CFG_RC_NO_MATCH;
1013
1014                 ip = ((struct sockaddr_in *)ifaddr->ifa_addr)->sin_addr.s_addr;
1015
1016                 list_for_each_entry(ip_range, ip_ranges, ipr_entry) {
1017                         rc = cfs_ip_addr_match(bswap_32(ip), &ip_range->ipr_expr);
1018                         if (rc)
1019                                 break;
1020                         else
1021                                 return LUSTRE_CFG_RC_NO_MATCH;
1022                 }
1023         }
1024
1025         return LUSTRE_CFG_RC_MATCH;
1026 }
1027
1028 int lustre_lnet_resolve_ip2nets_rule(struct lustre_lnet_ip2nets *ip2nets,
1029                                      lnet_nid_t **nids, __u32 *nnids)
1030 {
1031         struct ifaddrs *ifa;
1032         int rc = LUSTRE_CFG_RC_NO_ERR;
1033
1034         rc = getifaddrs(&ifa);
1035         if (rc < 0)
1036                 return -errno;
1037
1038         rc = lustre_lnet_match_ip_to_intf(ifa,
1039                                           &ip2nets->ip2nets_net.nw_intflist,
1040                                           &ip2nets->ip2nets_ip_ranges);
1041         if (rc != LUSTRE_CFG_RC_MATCH) {
1042                 freeifaddrs(ifa);
1043                 return rc;
1044         }
1045
1046         rc = lustre_lnet_intf2nids(&ip2nets->ip2nets_net, nids, nnids);
1047         if (rc != LUSTRE_CFG_RC_NO_ERR) {
1048                 *nids = NULL;
1049                 *nnids = 0;
1050         }
1051
1052         freeifaddrs(ifa);
1053
1054         return rc;
1055 }
1056
1057 static int
1058 lustre_lnet_ioctl_config_ni(struct list_head *intf_list,
1059                             struct lnet_ioctl_config_lnd_tunables *tunables,
1060                             struct cfs_expr_list *global_cpts,
1061                             lnet_nid_t *nids, char *err_str)
1062 {
1063         char *data;
1064         struct lnet_ioctl_config_ni *conf;
1065         struct lnet_ioctl_config_lnd_tunables *tun = NULL;
1066         int rc = LUSTRE_CFG_RC_NO_ERR, i = 0;
1067         size_t len;
1068         int count;
1069         struct lnet_dlc_intf_descr *intf_descr;
1070         __u32 *cpt_array;
1071         struct cfs_expr_list *cpt_expr;
1072
1073         list_for_each_entry(intf_descr, intf_list,
1074                             intf_on_network) {
1075                 if (i == 0 && tunables != NULL)
1076                         len = sizeof(struct lnet_ioctl_config_ni) +
1077                               sizeof(struct lnet_ioctl_config_lnd_tunables);
1078                 else
1079                         len = sizeof(struct lnet_ioctl_config_ni);
1080
1081                 data = calloc(1, len);
1082                 conf = (struct lnet_ioctl_config_ni*) data;
1083                 if (i == 0 && tunables != NULL)
1084                         tun = (struct lnet_ioctl_config_lnd_tunables*)
1085                                 (data + sizeof(*conf));
1086
1087                 LIBCFS_IOC_INIT_V2(*conf, lic_cfg_hdr);
1088                 conf->lic_cfg_hdr.ioc_len = len;
1089                 conf->lic_nid = nids[i];
1090                 strncpy(conf->lic_ni_intf[0], intf_descr->intf_name,
1091                         LNET_MAX_STR_LEN);
1092
1093                 if (intf_descr->cpt_expr != NULL)
1094                         cpt_expr = intf_descr->cpt_expr;
1095                 else if (global_cpts != NULL)
1096                         cpt_expr = global_cpts;
1097                 else
1098                         cpt_expr = NULL;
1099
1100                 if (cpt_expr != NULL) {
1101                         count = cfs_expr_list_values(cpt_expr,
1102                                                      LNET_MAX_SHOW_NUM_CPT,
1103                                                      &cpt_array);
1104                         if (count > 0) {
1105                                 memcpy(conf->lic_cpts, cpt_array,
1106                                        sizeof(cpt_array[0]) * LNET_MAX_STR_LEN);
1107                                 free(cpt_array);
1108                         } else {
1109                                 count = 0;
1110                         }
1111                 } else {
1112                         count = 0;
1113                 }
1114
1115                 conf->lic_ncpts = count;
1116
1117                 if (i == 0 && tunables != NULL)
1118                         /* TODO put in the LND tunables */
1119                         memcpy(tun, tunables, sizeof(*tunables));
1120
1121                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_ADD_LOCAL_NI, data);
1122                 if (rc < 0) {
1123                         rc = -errno;
1124                         snprintf(err_str,
1125                                  LNET_MAX_STR_LEN,
1126                                  "\"cannot add network: %s\"", strerror(errno));
1127                         return rc;
1128                 }
1129                 i++;
1130         }
1131
1132         return LUSTRE_CFG_RC_NO_ERR;
1133 }
1134
1135 int
1136 lustre_lnet_config_ip2nets(struct lustre_lnet_ip2nets *ip2nets,
1137                            struct lnet_ioctl_config_lnd_tunables *tunables,
1138                            struct cfs_expr_list *global_cpts,
1139                            int seq_no, struct cYAML **err_rc)
1140 {
1141         lnet_nid_t *nids = NULL;
1142         __u32 nnids = 0;
1143         int rc;
1144         char err_str[LNET_MAX_STR_LEN];
1145
1146         snprintf(err_str, sizeof(err_str), "\"success\"");
1147
1148         if (ip2nets == NULL ||
1149             list_empty(&ip2nets->ip2nets_net.nw_intflist)) {
1150                 snprintf(err_str,
1151                          sizeof(err_str),
1152                          "\"incomplete ip2nets information\"");
1153                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1154                 goto out;
1155         }
1156
1157         rc = lustre_lnet_resolve_ip2nets_rule(ip2nets, &nids, &nnids);
1158         if (rc != LUSTRE_CFG_RC_NO_ERR && rc != LUSTRE_CFG_RC_MATCH) {
1159                 snprintf(err_str,
1160                          sizeof(err_str),
1161                          "\"cannot resolve ip2nets rule\"");
1162                 goto out;
1163         }
1164
1165         rc = lustre_lnet_ioctl_config_ni(&ip2nets->ip2nets_net.nw_intflist,
1166                                          tunables, global_cpts, nids,
1167                                          err_str);
1168         if (rc != LUSTRE_CFG_RC_NO_ERR)
1169                 free(nids);
1170
1171 out:
1172         cYAML_build_error(rc, seq_no, ADD_CMD, "ip2nets", err_str, err_rc);
1173         return rc;
1174 }
1175
1176 int lustre_lnet_config_ni(struct lnet_dlc_network_descr *nw_descr,
1177                           struct cfs_expr_list *global_cpts,
1178                           char *ip2net,
1179                           struct lnet_ioctl_config_lnd_tunables *tunables,
1180                           int seq_no, struct cYAML **err_rc)
1181 {
1182         char *data = NULL;
1183         struct lnet_ioctl_config_ni *conf;
1184         struct lnet_ioctl_config_lnd_tunables *tun = NULL;
1185         char buf[LNET_MAX_STR_LEN];
1186         int rc = LUSTRE_CFG_RC_NO_ERR;
1187         char err_str[LNET_MAX_STR_LEN];
1188         lnet_nid_t *nids = NULL;
1189         __u32 nnids = 0;
1190         size_t len;
1191         int count;
1192         struct lnet_dlc_intf_descr *intf_descr, *tmp;
1193         __u32 *cpt_array;
1194
1195         snprintf(err_str, sizeof(err_str), "\"success\"");
1196
1197         if (ip2net == NULL && nw_descr == NULL) {
1198                 snprintf(err_str,
1199                          sizeof(err_str),
1200                          "\"mandatory parameters not specified.\"");
1201                 rc = LUSTRE_CFG_RC_MISSING_PARAM;
1202                 goto out;
1203         }
1204
1205         if (ip2net != NULL && strlen(ip2net) >= sizeof(buf)) {
1206                 snprintf(err_str,
1207                          sizeof(err_str),
1208                          "\"ip2net string too long %d\"",
1209                                 (int)strlen(ip2net));
1210                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
1211                 goto out;
1212         }
1213
1214         if (ip2net != NULL) {
1215                 if (tunables != NULL)
1216                         len = sizeof(struct lnet_ioctl_config_ni) +
1217                               sizeof(struct lnet_ioctl_config_lnd_tunables);
1218                 else
1219                         len = sizeof(struct lnet_ioctl_config_ni);
1220                 data = calloc(1, len);
1221                 conf = (struct lnet_ioctl_config_ni*) data;
1222                 if (tunables != NULL)
1223                         tun = (struct lnet_ioctl_config_lnd_tunables*)
1224                                 (data + sizeof(*conf));
1225
1226                 LIBCFS_IOC_INIT_V2(*conf, lic_cfg_hdr);
1227                 conf->lic_cfg_hdr.ioc_len = len;
1228                 strncpy(conf->lic_legacy_ip2nets, ip2net,
1229                         LNET_MAX_STR_LEN);
1230
1231                 if (global_cpts != NULL) {
1232                         count = cfs_expr_list_values(global_cpts,
1233                                                      LNET_MAX_SHOW_NUM_CPT,
1234                                                      &cpt_array);
1235                         if (count > 0) {
1236                                 memcpy(conf->lic_cpts, cpt_array,
1237                                        sizeof(cpt_array[0]) * LNET_MAX_STR_LEN);
1238                                 free(cpt_array);
1239                         } else {
1240                                 count = 0;
1241                         }
1242                 } else {
1243                         count = 0;
1244                 }
1245
1246                 conf->lic_ncpts = count;
1247
1248                 if (tunables != NULL)
1249                         memcpy(tun, tunables, sizeof(*tunables));
1250
1251                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_ADD_LOCAL_NI, data);
1252                 if (rc < 0) {
1253                         rc = -errno;
1254                         snprintf(err_str,
1255                                 sizeof(err_str),
1256                                 "\"cannot add network: %s\"", strerror(errno));
1257                         goto out;
1258                 }
1259
1260                 goto out;
1261         }
1262
1263         if (LNET_NETTYP(nw_descr->nw_id) == LOLND)
1264                 return LUSTRE_CFG_RC_NO_ERR;
1265
1266         if (nw_descr->nw_id == LNET_NIDNET(LNET_NID_ANY)) {
1267                 snprintf(err_str,
1268                         sizeof(err_str),
1269                         "\"cannot parse net '%s'\"",
1270                         libcfs_net2str(nw_descr->nw_id));
1271                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1272                 goto out;
1273         }
1274
1275         if (list_empty(&nw_descr->nw_intflist)) {
1276                 snprintf(err_str,
1277                         sizeof(err_str),
1278                         "\"no interface name provided\"");
1279                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1280                 goto out;
1281         }
1282
1283         rc = lustre_lnet_intf2nids(nw_descr, &nids, &nnids);
1284         if (rc != 0) {
1285                 snprintf(err_str, sizeof(err_str),
1286                          "\"bad parameter\"");
1287                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1288                 goto out;
1289         }
1290
1291         rc = lustre_lnet_ioctl_config_ni(&nw_descr->nw_intflist,
1292                                          tunables, global_cpts, nids,
1293                                          err_str);
1294
1295 out:
1296         if (nw_descr != NULL) {
1297                 list_for_each_entry_safe(intf_descr, tmp,
1298                                          &nw_descr->nw_intflist,
1299                                          intf_on_network) {
1300                         if (intf_descr->cpt_expr != NULL)
1301                                 cfs_expr_list_free(intf_descr->cpt_expr);
1302                         free(intf_descr);
1303                 }
1304         }
1305
1306         cYAML_build_error(rc, seq_no, ADD_CMD, "net", err_str, err_rc);
1307
1308         if (nids)
1309                 free(nids);
1310
1311         if (data)
1312                 free(data);
1313
1314         return rc;
1315 }
1316
1317 int lustre_lnet_del_ni(struct lnet_dlc_network_descr *nw_descr,
1318                        int seq_no, struct cYAML **err_rc)
1319 {
1320         struct lnet_ioctl_config_ni data;
1321         int rc = LUSTRE_CFG_RC_NO_ERR, i;
1322         char err_str[LNET_MAX_STR_LEN];
1323         lnet_nid_t *nids = NULL;
1324         __u32 nnids = 0;
1325         struct lnet_dlc_intf_descr *intf_descr, *tmp;
1326
1327         if (LNET_NETTYP(nw_descr->nw_id) == LOLND)
1328                 return LUSTRE_CFG_RC_NO_ERR;
1329
1330         snprintf(err_str, sizeof(err_str), "\"success\"");
1331
1332         if (nw_descr == NULL) {
1333                 snprintf(err_str,
1334                          sizeof(err_str),
1335                          "\"missing mandatory parameter\"");
1336                 rc = LUSTRE_CFG_RC_MISSING_PARAM;
1337                 goto out;
1338         }
1339
1340         if (nw_descr->nw_id == LNET_NIDNET(LNET_NID_ANY)) {
1341                 snprintf(err_str,
1342                          sizeof(err_str),
1343                          "\"cannot parse net '%s'\"",
1344                          libcfs_net2str(nw_descr->nw_id));
1345                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1346                 goto out;
1347         }
1348
1349         rc = lustre_lnet_intf2nids(nw_descr, &nids, &nnids);
1350         if (rc != 0) {
1351                 snprintf(err_str, sizeof(err_str),
1352                          "\"bad parameter\"");
1353                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1354                 goto out;
1355         }
1356
1357         /*
1358          * no interfaces just the nw_id is specified
1359          */
1360         if (nnids == 0) {
1361                 nids = calloc(1, sizeof(*nids));
1362                 if (nids == NULL) {
1363                         snprintf(err_str, sizeof(err_str),
1364                                 "\"out of memory\"");
1365                         rc = LUSTRE_CFG_RC_OUT_OF_MEM;
1366                         goto out;
1367                 }
1368                 nids[0] = LNET_MKNID(nw_descr->nw_id, 0);
1369                 nnids = 1;
1370         }
1371
1372         for (i = 0; i < nnids; i++) {
1373                 LIBCFS_IOC_INIT_V2(data, lic_cfg_hdr);
1374                 data.lic_nid = nids[i];
1375
1376                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_DEL_LOCAL_NI, &data);
1377                 if (rc < 0) {
1378                         rc = -errno;
1379                         snprintf(err_str,
1380                                 sizeof(err_str),
1381                                 "\"cannot del network: %s\"", strerror(errno));
1382                 }
1383         }
1384
1385         list_for_each_entry_safe(intf_descr, tmp, &nw_descr->nw_intflist,
1386                                  intf_on_network) {
1387                 if (intf_descr->cpt_expr != NULL)
1388                         cfs_expr_list_free(intf_descr->cpt_expr);
1389                 free(intf_descr);
1390         }
1391
1392 out:
1393         cYAML_build_error(rc, seq_no, DEL_CMD, "net", err_str, err_rc);
1394
1395         if (nids != NULL)
1396                 free(nids);
1397
1398         return rc;
1399 }
1400
1401 int lustre_lnet_show_net(char *nw, int detail, int seq_no,
1402                          struct cYAML **show_rc, struct cYAML **err_rc)
1403 {
1404         char *buf;
1405         struct lnet_ioctl_config_ni *ni_data;
1406         struct lnet_ioctl_config_lnd_tunables *lnd;
1407         __u32 net = LNET_NIDNET(LNET_NID_ANY);
1408         __u32 prev_net = LNET_NIDNET(LNET_NID_ANY);
1409         int rc = LUSTRE_CFG_RC_OUT_OF_MEM, i, j;
1410         int l_errno = 0;
1411         struct cYAML *root = NULL, *tunables = NULL,
1412                 *net_node = NULL, *interfaces = NULL,
1413                 *item = NULL, *first_seq = NULL,
1414                 *tmp = NULL;
1415         int str_buf_len = LNET_MAX_SHOW_NUM_CPT * 2;
1416         char str_buf[str_buf_len];
1417         char *pos;
1418         char err_str[LNET_MAX_STR_LEN];
1419         bool exist = false, new_net = true;
1420         int net_num = 0;
1421         size_t buf_size = sizeof(*ni_data) + sizeof(*lnd);
1422
1423         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
1424
1425         buf = calloc(1, buf_size);
1426         if (buf == NULL)
1427                 goto out;
1428
1429         ni_data = (struct lnet_ioctl_config_ni *)buf;
1430
1431         if (nw != NULL) {
1432                 net = libcfs_str2net(nw);
1433                 if (net == LNET_NIDNET(LNET_NID_ANY)) {
1434                         snprintf(err_str,
1435                                  sizeof(err_str),
1436                                  "\"cannot parse net '%s'\"", nw);
1437                         rc = LUSTRE_CFG_RC_BAD_PARAM;
1438                         goto out;
1439                 }
1440         }
1441
1442         root = cYAML_create_object(NULL, NULL);
1443         if (root == NULL)
1444                 goto out;
1445
1446         net_node = cYAML_create_seq(root, "net");
1447         if (net_node == NULL)
1448                 goto out;
1449
1450         for (i = 0;; i++) {
1451                 pos = str_buf;
1452                 __u32 rc_net;
1453
1454                 memset(buf, 0, buf_size);
1455
1456                 LIBCFS_IOC_INIT_V2(*ni_data, lic_cfg_hdr);
1457                 /*
1458                  * set the ioc_len to the proper value since INIT assumes
1459                  * size of data
1460                  */
1461                 ni_data->lic_cfg_hdr.ioc_len = buf_size;
1462                 ni_data->lic_idx = i;
1463
1464                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_LOCAL_NI, ni_data);
1465                 if (rc != 0) {
1466                         l_errno = errno;
1467                         break;
1468                 }
1469
1470                 rc_net = LNET_NIDNET(ni_data->lic_nid);
1471
1472                 /* filter on provided data */
1473                 if (net != LNET_NIDNET(LNET_NID_ANY) &&
1474                     net != rc_net)
1475                         continue;
1476
1477                 /* default rc to -1 in case we hit the goto */
1478                 rc = -1;
1479                 exist = true;
1480
1481                 lnd = (struct lnet_ioctl_config_lnd_tunables *)ni_data->lic_bulk;
1482
1483                 if (rc_net != prev_net) {
1484                         prev_net = rc_net;
1485                         new_net = true;
1486                         net_num++;
1487                 }
1488
1489                 if (new_net) {
1490                         if (!cYAML_create_string(net_node, "net type",
1491                                                  libcfs_net2str(rc_net)))
1492                                 goto out;
1493
1494                         tmp = cYAML_create_seq(net_node, "local NI(s)");
1495                         if (tmp == NULL)
1496                                 goto out;
1497                         new_net = false;
1498                 }
1499
1500                 /* create the tree to be printed. */
1501                 item = cYAML_create_seq_item(tmp);
1502                 if (item == NULL)
1503                         goto out;
1504
1505                 if (first_seq == NULL)
1506                         first_seq = item;
1507
1508                 if (cYAML_create_string(item, "nid",
1509                                         libcfs_nid2str(ni_data->lic_nid)) == NULL)
1510                         goto out;
1511
1512                 if (cYAML_create_string(item,
1513                                         "status",
1514                                         (ni_data->lic_status ==
1515                                           LNET_NI_STATUS_UP) ?
1516                                             "up" : "down") == NULL)
1517                         goto out;
1518
1519                 /* don't add interfaces unless there is at least one
1520                  * interface */
1521                 if (strlen(ni_data->lic_ni_intf[0]) > 0) {
1522                         interfaces = cYAML_create_object(item, "interfaces");
1523                         if (interfaces == NULL)
1524                                 goto out;
1525
1526                         for (j = 0; j < LNET_MAX_INTERFACES; j++) {
1527                                 if (strlen(ni_data->lic_ni_intf[j]) > 0) {
1528                                         snprintf(str_buf,
1529                                                  sizeof(str_buf), "%d", j);
1530                                         if (cYAML_create_string(interfaces,
1531                                                 str_buf,
1532                                                 ni_data->lic_ni_intf[j]) ==
1533                                                         NULL)
1534                                                 goto out;
1535                                 }
1536                         }
1537                 }
1538
1539                 if (detail) {
1540                         char *limit;
1541
1542                         tunables = cYAML_create_object(item, "tunables");
1543                         if (!tunables)
1544                                 goto out;
1545
1546                         rc = lustre_net_show_tunables(tunables, &lnd->lt_cmn);
1547                         if (rc != LUSTRE_CFG_RC_NO_ERR)
1548                                 goto out;
1549
1550                         tunables = cYAML_create_object(item, "lnd tunables");
1551                         if (tunables == NULL)
1552                                 goto out;
1553
1554                         rc = lustre_ni_show_tunables(tunables, LNET_NETTYP(rc_net),
1555                                                      &lnd->lt_tun);
1556                         if (rc != LUSTRE_CFG_RC_NO_ERR)
1557                                 goto out;
1558
1559                         if (cYAML_create_number(item, "tcp bonding",
1560                                                 ni_data->lic_tcp_bonding)
1561                                                         == NULL)
1562                                 goto out;
1563
1564                         /* out put the CPTs in the format: "[x,x,x,...]" */
1565                         limit = str_buf + str_buf_len - 3;
1566                         pos += snprintf(pos, limit - pos, "\"[");
1567                         for (j = 0 ; ni_data->lic_ncpts >= 1 &&
1568                                 j < ni_data->lic_ncpts &&
1569                                 pos < limit; j++) {
1570                                 pos += snprintf(pos, limit - pos,
1571                                                 "%d", ni_data->lic_cpts[j]);
1572                                 if ((j + 1) < ni_data->lic_ncpts)
1573                                         pos += snprintf(pos, limit - pos, ",");
1574                         }
1575                         pos += snprintf(pos, 3, "]\"");
1576
1577                         if (ni_data->lic_ncpts >= 1 &&
1578                             cYAML_create_string(item, "CPT",
1579                                                 str_buf) == NULL)
1580                                 goto out;
1581                 }
1582         }
1583
1584         /* Print out the net information only if show_rc is not provided */
1585         if (show_rc == NULL)
1586                 cYAML_print_tree(root);
1587
1588         if (l_errno != ENOENT) {
1589                 snprintf(err_str,
1590                          sizeof(err_str),
1591                          "\"cannot get networks: %s\"",
1592                          strerror(l_errno));
1593                 rc = -l_errno;
1594                 goto out;
1595         } else
1596                 rc = LUSTRE_CFG_RC_NO_ERR;
1597
1598         snprintf(err_str, sizeof(err_str), "\"success\"");
1599 out:
1600         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR || !exist) {
1601                 cYAML_free_tree(root);
1602         } else if (show_rc != NULL && *show_rc != NULL) {
1603                 struct cYAML *show_node;
1604                 /* find the net node, if one doesn't exist
1605                  * then insert one.  Otherwise add to the one there
1606                  */
1607                 show_node = cYAML_get_object_item(*show_rc, "net");
1608                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
1609                         cYAML_insert_child(show_node, first_seq);
1610                         free(net_node);
1611                         free(root);
1612                 } else if (show_node == NULL) {
1613                         cYAML_insert_sibling((*show_rc)->cy_child,
1614                                                 net_node);
1615                         free(root);
1616                 } else {
1617                         cYAML_free_tree(root);
1618                 }
1619         } else {
1620                 *show_rc = root;
1621         }
1622
1623         cYAML_build_error(rc, seq_no, SHOW_CMD, "net", err_str, err_rc);
1624
1625         return rc;
1626 }
1627
1628 int lustre_lnet_enable_routing(int enable, int seq_no, struct cYAML **err_rc)
1629 {
1630         struct lnet_ioctl_config_data data;
1631         int rc = LUSTRE_CFG_RC_NO_ERR;
1632         char err_str[LNET_MAX_STR_LEN];
1633
1634         snprintf(err_str, sizeof(err_str), "\"success\"");
1635
1636         LIBCFS_IOC_INIT_V2(data, cfg_hdr);
1637         data.cfg_config_u.cfg_buffers.buf_enable = (enable) ? 1 : 0;
1638
1639         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_CONFIG_RTR, &data);
1640         if (rc != 0) {
1641                 rc = -errno;
1642                 snprintf(err_str,
1643                          sizeof(err_str),
1644                          "\"cannot %s routing %s\"",
1645                          (enable) ? "enable" : "disable", strerror(errno));
1646                 goto out;
1647         }
1648
1649 out:
1650         cYAML_build_error(rc, seq_no,
1651                          (enable) ? ADD_CMD : DEL_CMD,
1652                          "routing", err_str, err_rc);
1653
1654         return rc;
1655 }
1656
1657 int lustre_lnet_config_buffers(int tiny, int small, int large, int seq_no,
1658                                struct cYAML **err_rc)
1659 {
1660         struct lnet_ioctl_config_data data;
1661         int rc = LUSTRE_CFG_RC_NO_ERR;
1662         char err_str[LNET_MAX_STR_LEN];
1663
1664         snprintf(err_str, sizeof(err_str), "\"success\"");
1665
1666         /* -1 indicates to ignore changes to this field */
1667         if (tiny < -1 || small < -1 || large < -1) {
1668                 snprintf(err_str,
1669                          sizeof(err_str),
1670                          "\"tiny, small and large must be >= 0\"");
1671                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
1672                 goto out;
1673         }
1674
1675         LIBCFS_IOC_INIT_V2(data, cfg_hdr);
1676         data.cfg_config_u.cfg_buffers.buf_tiny = tiny;
1677         data.cfg_config_u.cfg_buffers.buf_small = small;
1678         data.cfg_config_u.cfg_buffers.buf_large = large;
1679
1680         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_ADD_BUF, &data);
1681         if (rc != 0) {
1682                 rc = -errno;
1683                 snprintf(err_str,
1684                          sizeof(err_str),
1685                          "\"cannot configure buffers: %s\"", strerror(errno));
1686                 goto out;
1687         }
1688
1689 out:
1690         cYAML_build_error(rc, seq_no, ADD_CMD, "buf", err_str, err_rc);
1691
1692         return rc;
1693 }
1694
1695 int lustre_lnet_show_routing(int seq_no, struct cYAML **show_rc,
1696                              struct cYAML **err_rc)
1697 {
1698         struct lnet_ioctl_config_data *data;
1699         struct lnet_ioctl_pool_cfg *pool_cfg = NULL;
1700         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
1701         int l_errno = 0;
1702         char *buf;
1703         char *pools[LNET_NRBPOOLS] = {"tiny", "small", "large"};
1704         int buf_count[LNET_NRBPOOLS] = {0};
1705         struct cYAML *root = NULL, *pools_node = NULL,
1706                      *type_node = NULL, *item = NULL, *cpt = NULL,
1707                      *first_seq = NULL, *buffers = NULL;
1708         int i, j;
1709         char err_str[LNET_MAX_STR_LEN];
1710         char node_name[LNET_MAX_STR_LEN];
1711         bool exist = false;
1712
1713         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
1714
1715         buf = calloc(1, sizeof(*data) + sizeof(*pool_cfg));
1716         if (buf == NULL)
1717                 goto out;
1718
1719         data = (struct lnet_ioctl_config_data *)buf;
1720
1721         root = cYAML_create_object(NULL, NULL);
1722         if (root == NULL)
1723                 goto out;
1724
1725         pools_node = cYAML_create_seq(root, "routing");
1726         if (pools_node == NULL)
1727                 goto out;
1728
1729         for (i = 0;; i++) {
1730                 LIBCFS_IOC_INIT_V2(*data, cfg_hdr);
1731                 data->cfg_hdr.ioc_len = sizeof(struct lnet_ioctl_config_data) +
1732                                         sizeof(struct lnet_ioctl_pool_cfg);
1733                 data->cfg_count = i;
1734
1735                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_BUF, data);
1736                 if (rc != 0) {
1737                         l_errno = errno;
1738                         break;
1739                 }
1740
1741                 exist = true;
1742
1743                 pool_cfg = (struct lnet_ioctl_pool_cfg *)data->cfg_bulk;
1744
1745                 snprintf(node_name, sizeof(node_name), "cpt[%d]", i);
1746                 item = cYAML_create_seq_item(pools_node);
1747                 if (item == NULL)
1748                         goto out;
1749
1750                 if (first_seq == NULL)
1751                         first_seq = item;
1752
1753                 cpt = cYAML_create_object(item, node_name);
1754                 if (cpt == NULL)
1755                         goto out;
1756
1757                 /* create the tree  and print */
1758                 for (j = 0; j < LNET_NRBPOOLS; j++) {
1759                         type_node = cYAML_create_object(cpt, pools[j]);
1760                         if (type_node == NULL)
1761                                 goto out;
1762                         if (cYAML_create_number(type_node, "npages",
1763                                                 pool_cfg->pl_pools[j].pl_npages)
1764                             == NULL)
1765                                 goto out;
1766                         if (cYAML_create_number(type_node, "nbuffers",
1767                                                 pool_cfg->pl_pools[j].
1768                                                   pl_nbuffers) == NULL)
1769                                 goto out;
1770                         if (cYAML_create_number(type_node, "credits",
1771                                                 pool_cfg->pl_pools[j].
1772                                                    pl_credits) == NULL)
1773                                 goto out;
1774                         if (cYAML_create_number(type_node, "mincredits",
1775                                                 pool_cfg->pl_pools[j].
1776                                                    pl_mincredits) == NULL)
1777                                 goto out;
1778                         /* keep track of the total count for each of the
1779                          * tiny, small and large buffers */
1780                         buf_count[j] += pool_cfg->pl_pools[j].pl_nbuffers;
1781                 }
1782         }
1783
1784         if (pool_cfg != NULL) {
1785                 item = cYAML_create_seq_item(pools_node);
1786                 if (item == NULL)
1787                         goto out;
1788
1789                 if (cYAML_create_number(item, "enable", pool_cfg->pl_routing) ==
1790                     NULL)
1791                         goto out;
1792         }
1793
1794         /* create a buffers entry in the show. This is necessary so that
1795          * if the YAML output is used to configure a node, the buffer
1796          * configuration takes hold */
1797         buffers = cYAML_create_object(root, "buffers");
1798         if (buffers == NULL)
1799                 goto out;
1800
1801         for (i = 0; i < LNET_NRBPOOLS; i++) {
1802                 if (cYAML_create_number(buffers, pools[i], buf_count[i]) == NULL)
1803                         goto out;
1804         }
1805
1806         if (show_rc == NULL)
1807                 cYAML_print_tree(root);
1808
1809         if (l_errno != ENOENT) {
1810                 snprintf(err_str,
1811                          sizeof(err_str),
1812                          "\"cannot get routing information: %s\"",
1813                          strerror(l_errno));
1814                 rc = -l_errno;
1815                 goto out;
1816         } else
1817                 rc = LUSTRE_CFG_RC_NO_ERR;
1818
1819         snprintf(err_str, sizeof(err_str), "\"success\"");
1820         rc = LUSTRE_CFG_RC_NO_ERR;
1821
1822 out:
1823         free(buf);
1824         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR || !exist) {
1825                 cYAML_free_tree(root);
1826         } else if (show_rc != NULL && *show_rc != NULL) {
1827                 struct cYAML *routing_node;
1828                 /* there should exist only one routing block and one
1829                  * buffers block. If there already exists a previous one
1830                  * then don't add another */
1831                 routing_node = cYAML_get_object_item(*show_rc, "routing");
1832                 if (routing_node == NULL) {
1833                         cYAML_insert_sibling((*show_rc)->cy_child,
1834                                                 root->cy_child);
1835                         free(root);
1836                 } else {
1837                         cYAML_free_tree(root);
1838                 }
1839         } else {
1840                 *show_rc = root;
1841         }
1842
1843         cYAML_build_error(rc, seq_no, SHOW_CMD, "routing", err_str, err_rc);
1844
1845         return rc;
1846 }
1847
1848 int lustre_lnet_show_peer(char *knid, int seq_no, struct cYAML **show_rc,
1849                           struct cYAML **err_rc)
1850 {
1851         struct lnet_ioctl_peer_cfg *peer_info;
1852         struct lnet_peer_ni_credit_info *lpni_cri;
1853         int rc = LUSTRE_CFG_RC_OUT_OF_MEM, ncpt = 0, i = 0, j = 0;
1854         int l_errno = 0;
1855         struct cYAML *root = NULL, *peer = NULL, *peer_ni = NULL,
1856                      *first_seq = NULL, *peer_root = NULL, *tmp = NULL;
1857         char err_str[LNET_MAX_STR_LEN];
1858         lnet_nid_t prev_primary_nid = LNET_NID_ANY, primary_nid = LNET_NID_ANY;
1859         char *data = calloc(sizeof(*peer_info) + sizeof(*lpni_cri), 1);
1860         bool new_peer = true;
1861
1862         snprintf(err_str, sizeof(err_str),
1863                  "\"out of memory\"");
1864
1865         if (data == NULL)
1866                 goto out;
1867
1868         peer_info = (struct lnet_ioctl_peer_cfg *)data;
1869
1870         /* create struct cYAML root object */
1871         root = cYAML_create_object(NULL, NULL);
1872         if (root == NULL)
1873                 goto out;
1874
1875         peer_root = cYAML_create_seq(root, "peer");
1876         if (peer_root == NULL)
1877                 goto out;
1878
1879         if (knid != NULL)
1880                 primary_nid = libcfs_str2nid(knid);
1881
1882         do {
1883                 for (i = 0;; i++) {
1884                         memset(data, 0, sizeof(*peer_info) + sizeof(*lpni_cri));
1885                         LIBCFS_IOC_INIT_V2(*peer_info, prcfg_hdr);
1886                         peer_info->prcfg_hdr.ioc_len = sizeof(*peer_info) +
1887                                                        sizeof(*lpni_cri);
1888                         peer_info->prcfg_idx = i;
1889
1890                         rc = l_ioctl(LNET_DEV_ID,
1891                                      IOC_LIBCFS_GET_PEER_NI, peer_info);
1892                         if (rc != 0) {
1893                                 l_errno = errno;
1894                                 break;
1895                         }
1896
1897                         if (primary_nid != LNET_NID_ANY &&
1898                             primary_nid != peer_info->prcfg_key_nid)
1899                                         continue;
1900
1901                         lpni_cri = (struct lnet_peer_ni_credit_info*)peer_info->prcfg_bulk;
1902
1903                         peer = cYAML_create_seq_item(peer_root);
1904                         if (peer == NULL)
1905                                 goto out;
1906
1907                         if (peer_info->prcfg_key_nid != prev_primary_nid) {
1908                                 prev_primary_nid = peer_info->prcfg_key_nid;
1909                                 new_peer = true;
1910                         }
1911
1912                         if (new_peer) {
1913                                 lnet_nid_t pnid = peer_info->prcfg_key_nid;
1914                                 if (cYAML_create_string(peer, "primary nid",
1915                                                         libcfs_nid2str(pnid))
1916                                     == NULL)
1917                                         goto out;
1918                                 tmp = cYAML_create_seq(peer, "peer ni");
1919                                 if (tmp == NULL)
1920                                         goto out;
1921                                 new_peer = false;
1922                         }
1923
1924                         if (first_seq == NULL)
1925                                 first_seq = peer;
1926
1927                         peer_ni = cYAML_create_seq_item(tmp);
1928                         if (peer_ni == NULL)
1929                                 goto out;
1930
1931                         if (cYAML_create_string(peer_ni, "nid",
1932                                                 libcfs_nid2str
1933                                                  (peer_info->prcfg_cfg_nid))
1934                             == NULL)
1935                                 goto out;
1936
1937                         if (cYAML_create_string(peer_ni, "state",
1938                                                 lpni_cri->cr_aliveness)
1939                             == NULL)
1940                                 goto out;
1941
1942                         if (cYAML_create_number(peer_ni, "refcount",
1943                                                 lpni_cri->cr_refcount) == NULL)
1944                                 goto out;
1945
1946                         if (cYAML_create_number(peer_ni, "max_ni_tx_credits",
1947                                                 lpni_cri->cr_ni_peer_tx_credits)
1948                             == NULL)
1949                                 goto out;
1950
1951                         if (cYAML_create_number(peer_ni, "available_tx_credits",
1952                                                 lpni_cri->cr_peer_tx_credits)
1953                             == NULL)
1954                                 goto out;
1955
1956                         if (cYAML_create_number(peer_ni, "available_rtr_credits",
1957                                                 lpni_cri->cr_peer_rtr_credits)
1958                             == NULL)
1959                                 goto out;
1960
1961                         if (cYAML_create_number(peer_ni, "min_rtr_credits",
1962                                                 lpni_cri->cr_peer_min_rtr_credits)
1963                             == NULL)
1964                                 goto out;
1965
1966                         if (cYAML_create_number(peer_ni, "tx_q_num_of_buf",
1967                                                 lpni_cri->cr_peer_tx_qnob)
1968                             == NULL)
1969                                 goto out;
1970                 }
1971
1972                 if (l_errno != ENOENT) {
1973                         snprintf(err_str,
1974                                 sizeof(err_str),
1975                                 "\"cannot get peer information: %s\"",
1976                                 strerror(l_errno));
1977                         rc = -l_errno;
1978                         goto out;
1979                 }
1980
1981                 j++;
1982         } while (j < ncpt);
1983
1984         /* print output iff show_rc is not provided */
1985         if (show_rc == NULL)
1986                 cYAML_print_tree(root);
1987
1988         snprintf(err_str, sizeof(err_str), "\"success\"");
1989         rc = LUSTRE_CFG_RC_NO_ERR;
1990
1991 out:
1992         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR) {
1993                 cYAML_free_tree(root);
1994         } else if (show_rc != NULL && *show_rc != NULL) {
1995                 struct cYAML *show_node;
1996                 /* find the peer node, if one doesn't exist then
1997                  * insert one.  Otherwise add to the one there
1998                  */
1999                 show_node = cYAML_get_object_item(*show_rc,
2000                                                   "peer");
2001                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
2002                         cYAML_insert_child(show_node, first_seq);
2003                         free(peer_root);
2004                         free(root);
2005                 } else if (show_node == NULL) {
2006                         cYAML_insert_sibling((*show_rc)->cy_child,
2007                                              peer_root);
2008                         free(root);
2009                 } else {
2010                         cYAML_free_tree(root);
2011                 }
2012         } else {
2013                 *show_rc = root;
2014         }
2015
2016         cYAML_build_error(rc, seq_no, SHOW_CMD, "peer", err_str,
2017                           err_rc);
2018
2019         return rc;
2020 }
2021
2022 int lustre_lnet_show_stats(int seq_no, struct cYAML **show_rc,
2023                            struct cYAML **err_rc)
2024 {
2025         struct lnet_ioctl_lnet_stats data;
2026         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
2027         int l_errno;
2028         char err_str[LNET_MAX_STR_LEN];
2029         struct cYAML *root = NULL, *stats = NULL;
2030
2031         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
2032
2033         LIBCFS_IOC_INIT_V2(data, st_hdr);
2034
2035         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_LNET_STATS, &data);
2036         if (rc != 0) {
2037                 l_errno = errno;
2038                 snprintf(err_str,
2039                          sizeof(err_str),
2040                          "\"cannot get lnet statistics: %s\"",
2041                          strerror(l_errno));
2042                 rc = -l_errno;
2043                 goto out;
2044         }
2045
2046         root = cYAML_create_object(NULL, NULL);
2047         if (root == NULL)
2048                 goto out;
2049
2050         stats = cYAML_create_object(root, "statistics");
2051         if (stats == NULL)
2052                 goto out;
2053
2054         if (cYAML_create_number(stats, "msgs_alloc",
2055                                 data.st_cntrs.msgs_alloc) == NULL)
2056                 goto out;
2057
2058         if (cYAML_create_number(stats, "msgs_max",
2059                                 data.st_cntrs.msgs_max) == NULL)
2060                 goto out;
2061
2062         if (cYAML_create_number(stats, "errors",
2063                                 data.st_cntrs.errors) == NULL)
2064                 goto out;
2065
2066         if (cYAML_create_number(stats, "send_count",
2067                                 data.st_cntrs.send_count) == NULL)
2068                 goto out;
2069
2070         if (cYAML_create_number(stats, "recv_count",
2071                                 data.st_cntrs.recv_count) == NULL)
2072                 goto out;
2073
2074         if (cYAML_create_number(stats, "route_count",
2075                                 data.st_cntrs.route_count) == NULL)
2076                 goto out;
2077
2078         if (cYAML_create_number(stats, "drop_count",
2079                                 data.st_cntrs.drop_count) == NULL)
2080                 goto out;
2081
2082         if (cYAML_create_number(stats, "send_length",
2083                                 data.st_cntrs.send_length) == NULL)
2084                 goto out;
2085
2086         if (cYAML_create_number(stats, "recv_length",
2087                                 data.st_cntrs.recv_length) == NULL)
2088                 goto out;
2089
2090         if (cYAML_create_number(stats, "route_length",
2091                                 data.st_cntrs.route_length) == NULL)
2092                 goto out;
2093
2094         if (cYAML_create_number(stats, "drop_length",
2095                                 data.st_cntrs.drop_length) == NULL)
2096                 goto out;
2097
2098         if (show_rc == NULL)
2099                 cYAML_print_tree(root);
2100
2101         snprintf(err_str, sizeof(err_str), "\"success\"");
2102 out:
2103         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR) {
2104                 cYAML_free_tree(root);
2105         } else if (show_rc != NULL && *show_rc != NULL) {
2106                 cYAML_insert_sibling((*show_rc)->cy_child,
2107                                         root->cy_child);
2108                 free(root);
2109         } else {
2110                 *show_rc = root;
2111         }
2112
2113         cYAML_build_error(rc, seq_no, SHOW_CMD, "statistics", err_str, err_rc);
2114
2115         return rc;
2116 }
2117
2118 typedef int (*cmd_handler_t)(struct cYAML *tree,
2119                              struct cYAML **show_rc,
2120                              struct cYAML **err_rc);
2121
2122 static int handle_yaml_config_route(struct cYAML *tree, struct cYAML **show_rc,
2123                                     struct cYAML **err_rc)
2124 {
2125         struct cYAML *net, *gw, *hop, *prio, *seq_no;
2126
2127         net = cYAML_get_object_item(tree, "net");
2128         gw = cYAML_get_object_item(tree, "gateway");
2129         hop = cYAML_get_object_item(tree, "hop");
2130         prio = cYAML_get_object_item(tree, "priority");
2131         seq_no = cYAML_get_object_item(tree, "seq_no");
2132
2133         return lustre_lnet_config_route((net) ? net->cy_valuestring : NULL,
2134                                         (gw) ? gw->cy_valuestring : NULL,
2135                                         (hop) ? hop->cy_valueint : -1,
2136                                         (prio) ? prio->cy_valueint : -1,
2137                                         (seq_no) ? seq_no->cy_valueint : -1,
2138                                         err_rc);
2139 }
2140
2141 static void yaml_free_string_array(char **array, int num)
2142 {
2143         int i;
2144         char **sub_array = array;
2145
2146         for (i = 0; i < num; i++) {
2147                 if (*sub_array != NULL)
2148                         free(sub_array);
2149                 sub_array++;
2150         }
2151         free(array);
2152 }
2153
2154 /*
2155  *    interfaces:
2156  *        0: <intf_name>['['<expr>']']
2157  *        1: <intf_name>['['<expr>']']
2158  */
2159 static int yaml_copy_intf_info(struct cYAML *intf_tree,
2160                                struct lnet_dlc_network_descr *nw_descr)
2161 {
2162         struct cYAML *child = NULL;
2163         int intf_num = 0, rc = LUSTRE_CFG_RC_NO_ERR;
2164         struct lnet_dlc_intf_descr *intf_descr, *tmp;
2165
2166         if (intf_tree == NULL || nw_descr == NULL)
2167                 return LUSTRE_CFG_RC_BAD_PARAM;
2168
2169         /* now grab all the interfaces and their cpts */
2170         child = intf_tree->cy_child;
2171         while (child != NULL) {
2172                 if (child->cy_valuestring == NULL) {
2173                         child = child->cy_next;
2174                         continue;
2175                 }
2176
2177                 if (strlen(child->cy_valuestring) >= LNET_MAX_STR_LEN)
2178                         goto failed;
2179
2180                 rc = lustre_lnet_add_intf_descr(&nw_descr->nw_intflist,
2181                                                 child->cy_valuestring,
2182                                                 strlen(child->cy_valuestring));
2183                 if (rc != LUSTRE_CFG_RC_NO_ERR)
2184                         goto failed;
2185
2186                 intf_num++;
2187                 child = child->cy_next;
2188         }
2189
2190         if (intf_num == 0)
2191                 return LUSTRE_CFG_RC_MISSING_PARAM;
2192
2193         return intf_num;
2194
2195 failed:
2196         list_for_each_entry_safe(intf_descr, tmp, &nw_descr->nw_intflist,
2197                                  intf_on_network) {
2198                 if (intf_descr->cpt_expr != NULL)
2199                         cfs_expr_list_free(intf_descr->cpt_expr);
2200                 free(intf_descr);
2201         }
2202
2203         return rc;
2204 }
2205
2206 static bool
2207 yaml_extract_cmn_tunables(struct cYAML *tree,
2208                           struct lnet_ioctl_config_lnd_cmn_tunables *tunables,
2209                           int *num_global_cpts,
2210                           struct cfs_expr_list **global_cpts)
2211 {
2212         struct cYAML *tun, *item, *smp;
2213
2214         tun = cYAML_get_object_item(tree, "tunables");
2215         if (tun != NULL) {
2216                 item = cYAML_get_object_item(tun, "peer_timeout");
2217                 if (item != NULL)
2218                         tunables->lct_peer_timeout = item->cy_valueint;
2219                 item = cYAML_get_object_item(tun, "peer_credits");
2220                 if (item != NULL)
2221                         tunables->lct_peer_tx_credits = item->cy_valueint;
2222                 item = cYAML_get_object_item(tun, "peer_buffer_credits");
2223                 if (item != NULL)
2224                         tunables->lct_peer_rtr_credits = item->cy_valueint;
2225                 item = cYAML_get_object_item(tun, "credits");
2226                 if (item != NULL)
2227                         tunables->lct_max_tx_credits = item->cy_valueint;
2228                 smp = cYAML_get_object_item(tun, "CPT");
2229                 if (smp != NULL) {
2230                         *num_global_cpts =
2231                                 cfs_expr_list_parse(smp->cy_valuestring,
2232                                                  strlen(smp->cy_valuestring),
2233                                                  0, UINT_MAX, global_cpts);
2234                 }
2235
2236                 return true;
2237         }
2238
2239         return false;
2240 }
2241
2242 static bool
2243 yaml_extract_tunables(struct cYAML *tree,
2244                       struct lnet_ioctl_config_lnd_tunables *tunables,
2245                       int *num_global_cpts,
2246                       struct cfs_expr_list **global_cpts,
2247                       __u32 net_type)
2248 {
2249         bool rc;
2250
2251         rc = yaml_extract_cmn_tunables(tree, &tunables->lt_cmn,
2252                                        num_global_cpts, global_cpts);
2253
2254         if (!rc)
2255                 return rc;
2256
2257         lustre_yaml_extract_lnd_tunables(tree, net_type,
2258                                          &tunables->lt_tun);
2259
2260         return rc;
2261 }
2262
2263 /*
2264  * net:
2265  *    - net type: <net>[<NUM>]
2266   *      local NI(s):
2267  *        - nid: <ip>@<net>[<NUM>]
2268  *          status: up
2269  *          interfaces:
2270  *               0: <intf_name>['['<expr>']']
2271  *               1: <intf_name>['['<expr>']']
2272  *        tunables:
2273  *               peer_timeout: <NUM>
2274  *               peer_credits: <NUM>
2275  *               peer_buffer_credits: <NUM>
2276  *               credits: <NUM>
2277 *         lnd tunables:
2278  *               peercredits_hiw: <NUM>
2279  *               map_on_demand: <NUM>
2280  *               concurrent_sends: <NUM>
2281  *               fmr_pool_size: <NUM>
2282  *               fmr_flush_trigger: <NUM>
2283  *               fmr_cache: <NUM>
2284  *
2285  * At least one interface is required. If no interfaces are provided the
2286  * network interface can not be configured.
2287  */
2288 static int handle_yaml_config_ni(struct cYAML *tree, struct cYAML **show_rc,
2289                                  struct cYAML **err_rc)
2290 {
2291         struct cYAML *net, *intf, *seq_no, *ip2net = NULL, *local_nis = NULL,
2292                      *item = NULL;
2293         int num_entries = 0, num_global_cpts = 0, rc;
2294         struct lnet_dlc_network_descr nw_descr;
2295         struct cfs_expr_list *global_cpts = NULL;
2296         struct lnet_ioctl_config_lnd_tunables tunables;
2297         bool found = false;
2298
2299         memset(&tunables, 0, sizeof(tunables));
2300
2301         INIT_LIST_HEAD(&nw_descr.network_on_rule);
2302         INIT_LIST_HEAD(&nw_descr.nw_intflist);
2303
2304         ip2net = cYAML_get_object_item(tree, "ip2net");
2305         net = cYAML_get_object_item(tree, "net type");
2306         if (net)
2307                 nw_descr.nw_id = libcfs_str2net(net->cy_valuestring);
2308
2309         /*
2310          * if neither net nor ip2nets are present, then we can not
2311          * configure the network.
2312          */
2313         if (!net && !ip2net)
2314                 return LUSTRE_CFG_RC_MISSING_PARAM;
2315
2316         local_nis = cYAML_get_object_item(tree, "local NI(s)");
2317         if (local_nis == NULL)
2318                 return LUSTRE_CFG_RC_MISSING_PARAM;
2319
2320         if (!cYAML_is_sequence(local_nis))
2321                 return LUSTRE_CFG_RC_BAD_PARAM;
2322
2323         while (cYAML_get_next_seq_item(local_nis, &item) != NULL) {
2324                 intf = cYAML_get_object_item(item, "interfaces");
2325                 if (intf == NULL)
2326                         continue;
2327                 num_entries = yaml_copy_intf_info(intf, &nw_descr);
2328                 if (num_entries <= 0) {
2329                         cYAML_build_error(num_entries, -1, "ni", "add",
2330                                         "bad interface list",
2331                                         err_rc);
2332                         return LUSTRE_CFG_RC_BAD_PARAM;
2333                 }
2334         }
2335
2336         found = yaml_extract_tunables(tree, &tunables, &num_global_cpts,
2337                                       &global_cpts,
2338                                       LNET_NETTYP(nw_descr.nw_id));
2339         seq_no = cYAML_get_object_item(tree, "seq_no");
2340
2341         rc = lustre_lnet_config_ni(&nw_descr,
2342                                    (num_global_cpts > 0) ? global_cpts: NULL,
2343                                    (ip2net) ? ip2net->cy_valuestring : NULL,
2344                                    (found) ? &tunables: NULL,
2345                                    (seq_no) ? seq_no->cy_valueint : -1,
2346                                    err_rc);
2347
2348         if (global_cpts != NULL)
2349                 cfs_expr_list_free(global_cpts);
2350
2351         return rc;
2352 }
2353
2354 /*
2355  * ip2nets:
2356  *  - net-spec: <tcp|o2ib|gni>[NUM]
2357  *    interfaces:
2358  *        0: <intf name>['['<expr>']']
2359  *        1: <intf name>['['<expr>']']
2360  *    ip-range:
2361  *        0: <expr.expr.expr.expr>
2362  *        1: <expr.expr.expr.expr>
2363  */
2364 static int handle_yaml_config_ip2nets(struct cYAML *tree,
2365                                       struct cYAML **show_rc,
2366                                       struct cYAML **err_rc)
2367 {
2368         struct cYAML *net, *ip_range, *item = NULL, *intf = NULL,
2369                      *seq_no = NULL;
2370         struct lustre_lnet_ip2nets ip2nets;
2371         struct lustre_lnet_ip_range_descr *ip_range_descr = NULL,
2372                                           *tmp = NULL;
2373         int rc = LUSTRE_CFG_RC_NO_ERR, num_global_cpts = 0;
2374         struct cfs_expr_list *global_cpts = NULL;
2375         struct cfs_expr_list *el, *el_tmp;
2376         struct lnet_ioctl_config_lnd_tunables tunables;
2377         struct lnet_dlc_intf_descr *intf_descr, *intf_tmp;
2378         bool found = false;
2379
2380         memset(&tunables, 0, sizeof(tunables));
2381
2382         /* initialize all lists */
2383         INIT_LIST_HEAD(&ip2nets.ip2nets_ip_ranges);
2384         INIT_LIST_HEAD(&ip2nets.ip2nets_net.network_on_rule);
2385         INIT_LIST_HEAD(&ip2nets.ip2nets_net.nw_intflist);
2386
2387         net = cYAML_get_object_item(tree, "net-spec");
2388         if (net == NULL)
2389                 return LUSTRE_CFG_RC_BAD_PARAM;
2390
2391         if (net != NULL && net->cy_valuestring == NULL)
2392                 return LUSTRE_CFG_RC_BAD_PARAM;
2393
2394         /* assign the network id */
2395         ip2nets.ip2nets_net.nw_id = libcfs_str2net(net->cy_valuestring);
2396         if (ip2nets.ip2nets_net.nw_id == LNET_NID_ANY)
2397                 return LUSTRE_CFG_RC_BAD_PARAM;
2398
2399         seq_no = cYAML_get_object_item(tree, "seq_no");
2400
2401         intf = cYAML_get_object_item(tree, "interfaces");
2402         if (intf != NULL) {
2403                 rc = yaml_copy_intf_info(intf, &ip2nets.ip2nets_net);
2404                 if (rc <= 0)
2405                         return LUSTRE_CFG_RC_BAD_PARAM;
2406         }
2407
2408         ip_range = cYAML_get_object_item(tree, "ip-range");
2409         if (ip_range != NULL) {
2410                 item = ip_range->cy_child;
2411                 while (item != NULL) {
2412                         if (item->cy_valuestring == NULL) {
2413                                 item = item->cy_next;
2414                                 continue;
2415                         }
2416
2417                         rc = lustre_lnet_add_ip_range(&ip2nets.ip2nets_ip_ranges,
2418                                                       item->cy_valuestring);
2419
2420                         if (rc != LUSTRE_CFG_RC_NO_ERR)
2421                                 goto out;
2422
2423                         item = item->cy_next;
2424                 }
2425         }
2426
2427         found = yaml_extract_tunables(tree, &tunables, &num_global_cpts,
2428                                       &global_cpts,
2429                                       LNET_NETTYP(ip2nets.ip2nets_net.nw_id));
2430
2431         rc = lustre_lnet_config_ip2nets(&ip2nets,
2432                         (found) ? &tunables : NULL,
2433                         (num_global_cpts > 0) ? global_cpts : NULL,
2434                         (seq_no) ? seq_no->cy_valueint : -1,
2435                         err_rc);
2436
2437         /*
2438          * don't stop because there was no match. Continue processing the
2439          * rest of the rules. If non-match then nothing is configured
2440          */
2441         if (rc == LUSTRE_CFG_RC_NO_MATCH)
2442                 rc = LUSTRE_CFG_RC_NO_ERR;
2443 out:
2444         list_for_each_entry_safe(intf_descr, intf_tmp,
2445                                  &ip2nets.ip2nets_net.nw_intflist,
2446                                  intf_on_network) {
2447                 if (intf_descr->cpt_expr != NULL)
2448                         cfs_expr_list_free(intf_descr->cpt_expr);
2449                 free(intf_descr);
2450         }
2451
2452         list_for_each_entry_safe(ip_range_descr, tmp,
2453                                  &ip2nets.ip2nets_ip_ranges,
2454                                  ipr_entry) {
2455                 list_for_each_entry_safe(el, el_tmp, &ip_range_descr->ipr_expr,
2456                                          el_link)
2457                         cfs_expr_list_free(el);
2458                 free(ip_range_descr);
2459         }
2460
2461         return rc;
2462 }
2463
2464 static int handle_yaml_del_ni(struct cYAML *tree, struct cYAML **show_rc,
2465                               struct cYAML **err_rc)
2466 {
2467         struct cYAML *net = NULL, *intf = NULL, *seq_no = NULL, *item = NULL,
2468                      *local_nis = NULL;
2469         int num_entries, rc;
2470         struct lnet_dlc_network_descr nw_descr;
2471
2472         INIT_LIST_HEAD(&nw_descr.network_on_rule);
2473         INIT_LIST_HEAD(&nw_descr.nw_intflist);
2474
2475         net = cYAML_get_object_item(tree, "net type");
2476         if (net != NULL)
2477                 nw_descr.nw_id = libcfs_str2net(net->cy_valuestring);
2478
2479         local_nis = cYAML_get_object_item(tree, "local NI(s)");
2480         if (local_nis == NULL)
2481                 return LUSTRE_CFG_RC_MISSING_PARAM;
2482
2483         if (!cYAML_is_sequence(local_nis))
2484                 return LUSTRE_CFG_RC_BAD_PARAM;
2485
2486         while (cYAML_get_next_seq_item(local_nis, &item) != NULL) {
2487                 intf = cYAML_get_object_item(item, "interfaces");
2488                 if (intf == NULL)
2489                         continue;
2490                 num_entries = yaml_copy_intf_info(intf, &nw_descr);
2491                 if (num_entries <= 0) {
2492                         cYAML_build_error(num_entries, -1, "ni", "add",
2493                                         "bad interface list",
2494                                         err_rc);
2495                         return LUSTRE_CFG_RC_BAD_PARAM;
2496                 }
2497         }
2498
2499         seq_no = cYAML_get_object_item(tree, "seq_no");
2500
2501         rc = lustre_lnet_del_ni((net) ? &nw_descr : NULL,
2502                                 (seq_no) ? seq_no->cy_valueint : -1,
2503                                 err_rc);
2504
2505         return rc;
2506 }
2507
2508 static int yaml_copy_peer_nids(struct cYAML *tree, char ***nidsppp)
2509 {
2510         struct cYAML *nids_entry = NULL, *child;
2511         char **nids = NULL;
2512         int num = 0, rc = LUSTRE_CFG_RC_NO_ERR;
2513
2514         nids_entry = cYAML_get_object_item(tree, "nids");
2515         if (nids_entry != NULL) {
2516                 /* count */
2517                 child = nids_entry->cy_child;
2518                 while (child != NULL) {
2519                         num++;
2520                         child = child->cy_next;
2521                 }
2522
2523                 if (num == 0)
2524                         return LUSTRE_CFG_RC_MISSING_PARAM;
2525
2526                 nids = calloc(sizeof(*nids) * num, 1);
2527                 if (nids == NULL)
2528                         return LUSTRE_CFG_RC_OUT_OF_MEM;
2529
2530                 /* now grab all the nids */
2531                 child = nids_entry->cy_child;
2532                 num = 0;
2533                 while (child != NULL) {
2534                         nids[num] = calloc(strlen(child->cy_valuestring) + 1,
2535                                            1);
2536                         if (nids[num] == NULL) {
2537                                 rc = LUSTRE_CFG_RC_OUT_OF_MEM;
2538                                 goto failed;
2539                         }
2540                         strncpy(nids[num], child->cy_valuestring,
2541                                 strlen(child->cy_valuestring));
2542                         child = child->cy_next;
2543                         num++;
2544                 }
2545                 rc = num;
2546         } else {
2547                 rc = LUSTRE_CFG_RC_MISSING_PARAM;
2548                 goto failed;
2549         }
2550
2551         *nidsppp = nids;
2552         return rc;
2553
2554 failed:
2555         if (nids != NULL)
2556                 yaml_free_string_array(nids, num);
2557         *nidsppp = NULL;
2558         return rc;
2559 }
2560
2561 static int handle_yaml_config_peer(struct cYAML *tree, struct cYAML **show_rc,
2562                                    struct cYAML **err_rc)
2563 {
2564         char **nids = NULL;
2565         int num, rc;
2566         struct cYAML *seq_no, *key_nid;
2567
2568         num = yaml_copy_peer_nids(tree, &nids);
2569         if (num < 0)
2570                 return num;
2571
2572         seq_no = cYAML_get_object_item(tree, "seq_no");
2573         key_nid = cYAML_get_object_item(tree, "key_nid");
2574
2575         rc = lustre_lnet_config_peer_nid((key_nid) ? key_nid->cy_valuestring : NULL,
2576                                          nids,
2577                                          (seq_no) ? seq_no->cy_valueint : -1,
2578                                          err_rc);
2579
2580         yaml_free_string_array(nids, num);
2581         return rc;
2582 }
2583
2584 static int handle_yaml_del_peer(struct cYAML *tree, struct cYAML **show_rc,
2585                                 struct cYAML **err_rc)
2586 {
2587         char **nids = NULL;
2588         int num, rc;
2589         struct cYAML *seq_no, *key_nid;
2590
2591         num = yaml_copy_peer_nids(tree, &nids);
2592         if (num < 0)
2593                 return num;
2594
2595         seq_no = cYAML_get_object_item(tree, "seq_no");
2596         key_nid = cYAML_get_object_item(tree, "key_nid");
2597
2598         rc = lustre_lnet_del_peer_nid((key_nid) ? key_nid->cy_valuestring : NULL,
2599                                       nids,
2600                                       (seq_no) ? seq_no->cy_valueint : -1,
2601                                       err_rc);
2602
2603         yaml_free_string_array(nids, num);
2604         return rc;
2605 }
2606
2607 static int handle_yaml_config_buffers(struct cYAML *tree,
2608                                       struct cYAML **show_rc,
2609                                       struct cYAML **err_rc)
2610 {
2611         int rc;
2612         struct cYAML *tiny, *small, *large, *seq_no;
2613
2614         tiny = cYAML_get_object_item(tree, "tiny");
2615         small = cYAML_get_object_item(tree, "small");
2616         large = cYAML_get_object_item(tree, "large");
2617         seq_no = cYAML_get_object_item(tree, "seq_no");
2618
2619         rc = lustre_lnet_config_buffers((tiny) ? tiny->cy_valueint : -1,
2620                                         (small) ? small->cy_valueint : -1,
2621                                         (large) ? large->cy_valueint : -1,
2622                                         (seq_no) ? seq_no->cy_valueint : -1,
2623                                         err_rc);
2624
2625         return rc;
2626 }
2627
2628 static int handle_yaml_config_routing(struct cYAML *tree,
2629                                       struct cYAML **show_rc,
2630                                       struct cYAML **err_rc)
2631 {
2632         int rc = LUSTRE_CFG_RC_NO_ERR;
2633         struct cYAML *seq_no, *enable;
2634
2635         seq_no = cYAML_get_object_item(tree, "seq_no");
2636         enable = cYAML_get_object_item(tree, "enable");
2637
2638         if (enable) {
2639                 rc = lustre_lnet_enable_routing(enable->cy_valueint,
2640                                                 (seq_no) ?
2641                                                     seq_no->cy_valueint : -1,
2642                                                 err_rc);
2643         }
2644
2645         return rc;
2646 }
2647
2648 static int handle_yaml_del_route(struct cYAML *tree, struct cYAML **show_rc,
2649                                  struct cYAML **err_rc)
2650 {
2651         struct cYAML *net;
2652         struct cYAML *gw;
2653         struct cYAML *seq_no;
2654
2655         net = cYAML_get_object_item(tree, "net");
2656         gw = cYAML_get_object_item(tree, "gateway");
2657         seq_no = cYAML_get_object_item(tree, "seq_no");
2658
2659         return lustre_lnet_del_route((net) ? net->cy_valuestring : NULL,
2660                                      (gw) ? gw->cy_valuestring : NULL,
2661                                      (seq_no) ? seq_no->cy_valueint : -1,
2662                                      err_rc);
2663 }
2664
2665 static int handle_yaml_del_routing(struct cYAML *tree, struct cYAML **show_rc,
2666                                    struct cYAML **err_rc)
2667 {
2668         struct cYAML *seq_no;
2669
2670         seq_no = cYAML_get_object_item(tree, "seq_no");
2671
2672         return lustre_lnet_enable_routing(0, (seq_no) ?
2673                                                 seq_no->cy_valueint : -1,
2674                                         err_rc);
2675 }
2676
2677 static int handle_yaml_show_route(struct cYAML *tree, struct cYAML **show_rc,
2678                                   struct cYAML **err_rc)
2679 {
2680         struct cYAML *net;
2681         struct cYAML *gw;
2682         struct cYAML *hop;
2683         struct cYAML *prio;
2684         struct cYAML *detail;
2685         struct cYAML *seq_no;
2686
2687         net = cYAML_get_object_item(tree, "net");
2688         gw = cYAML_get_object_item(tree, "gateway");
2689         hop = cYAML_get_object_item(tree, "hop");
2690         prio = cYAML_get_object_item(tree, "priority");
2691         detail = cYAML_get_object_item(tree, "detail");
2692         seq_no = cYAML_get_object_item(tree, "seq_no");
2693
2694         return lustre_lnet_show_route((net) ? net->cy_valuestring : NULL,
2695                                       (gw) ? gw->cy_valuestring : NULL,
2696                                       (hop) ? hop->cy_valueint : -1,
2697                                       (prio) ? prio->cy_valueint : -1,
2698                                       (detail) ? detail->cy_valueint : 0,
2699                                       (seq_no) ? seq_no->cy_valueint : -1,
2700                                       show_rc,
2701                                       err_rc);
2702 }
2703
2704 static int handle_yaml_show_net(struct cYAML *tree, struct cYAML **show_rc,
2705                                 struct cYAML **err_rc)
2706 {
2707         struct cYAML *net, *detail, *seq_no;
2708
2709         net = cYAML_get_object_item(tree, "net");
2710         detail = cYAML_get_object_item(tree, "detail");
2711         seq_no = cYAML_get_object_item(tree, "seq_no");
2712
2713         return lustre_lnet_show_net((net) ? net->cy_valuestring : NULL,
2714                                     (detail) ? detail->cy_valueint : 0,
2715                                     (seq_no) ? seq_no->cy_valueint : -1,
2716                                     show_rc,
2717                                     err_rc);
2718 }
2719
2720 static int handle_yaml_show_routing(struct cYAML *tree, struct cYAML **show_rc,
2721                                     struct cYAML **err_rc)
2722 {
2723         struct cYAML *seq_no;
2724
2725         seq_no = cYAML_get_object_item(tree, "seq_no");
2726
2727         return lustre_lnet_show_routing((seq_no) ? seq_no->cy_valueint : -1,
2728                                         show_rc, err_rc);
2729 }
2730
2731 static int handle_yaml_show_credits(struct cYAML *tree, struct cYAML **show_rc,
2732                                     struct cYAML **err_rc)
2733 {
2734         struct cYAML *seq_no, *key_nid;
2735
2736         seq_no = cYAML_get_object_item(tree, "seq_no");
2737         key_nid = cYAML_get_object_item(tree, "key_nid");
2738
2739         return lustre_lnet_show_peer((key_nid) ? key_nid->cy_valuestring : NULL,
2740                                      (seq_no) ? seq_no->cy_valueint : -1,
2741                                      show_rc, err_rc);
2742 }
2743
2744 static int handle_yaml_show_stats(struct cYAML *tree, struct cYAML **show_rc,
2745                                   struct cYAML **err_rc)
2746 {
2747         struct cYAML *seq_no;
2748
2749         seq_no = cYAML_get_object_item(tree, "seq_no");
2750
2751         return lustre_lnet_show_stats((seq_no) ? seq_no->cy_valueint : -1,
2752                                       show_rc, err_rc);
2753 }
2754
2755 struct lookup_cmd_hdlr_tbl {
2756         char *name;
2757         cmd_handler_t cb;
2758 };
2759
2760 static struct lookup_cmd_hdlr_tbl lookup_config_tbl[] = {
2761         {"route", handle_yaml_config_route},
2762         {"net", handle_yaml_config_ni},
2763         {"ip2nets", handle_yaml_config_ip2nets},
2764         {"peer", handle_yaml_config_peer},
2765         {"routing", handle_yaml_config_routing},
2766         {"buffers", handle_yaml_config_buffers},
2767         {NULL, NULL}
2768 };
2769
2770 static struct lookup_cmd_hdlr_tbl lookup_del_tbl[] = {
2771         {"route", handle_yaml_del_route},
2772         {"net", handle_yaml_del_ni},
2773         {"peer", handle_yaml_del_peer},
2774         {"routing", handle_yaml_del_routing},
2775         {NULL, NULL}
2776 };
2777
2778 static struct lookup_cmd_hdlr_tbl lookup_show_tbl[] = {
2779         {"route", handle_yaml_show_route},
2780         {"net", handle_yaml_show_net},
2781         {"buffers", handle_yaml_show_routing},
2782         {"routing", handle_yaml_show_routing},
2783         {"credits", handle_yaml_show_credits},
2784         {"statistics", handle_yaml_show_stats},
2785         {NULL, NULL}
2786 };
2787
2788 static cmd_handler_t lookup_fn(char *key,
2789                                struct lookup_cmd_hdlr_tbl *tbl)
2790 {
2791         int i;
2792         if (key == NULL)
2793                 return NULL;
2794
2795         for (i = 0; tbl[i].name != NULL; i++) {
2796                 if (strncmp(key, tbl[i].name, strlen(tbl[i].name)) == 0)
2797                         return tbl[i].cb;
2798         }
2799
2800         return NULL;
2801 }
2802
2803 static int lustre_yaml_cb_helper(char *f, struct lookup_cmd_hdlr_tbl *table,
2804                                  struct cYAML **show_rc, struct cYAML **err_rc)
2805 {
2806         struct cYAML *tree, *item = NULL, *head, *child;
2807         cmd_handler_t cb;
2808         char err_str[LNET_MAX_STR_LEN];
2809         int rc = LUSTRE_CFG_RC_NO_ERR, return_rc = LUSTRE_CFG_RC_NO_ERR;
2810
2811         tree = cYAML_build_tree(f, NULL, 0, err_rc, false);
2812         if (tree == NULL)
2813                 return LUSTRE_CFG_RC_BAD_PARAM;
2814
2815         child = tree->cy_child;
2816         while (child != NULL) {
2817                 cb = lookup_fn(child->cy_string, table);
2818                 if (cb == NULL) {
2819                         snprintf(err_str, sizeof(err_str),
2820                                 "\"call back for '%s' not found\"",
2821                                 child->cy_string);
2822                         cYAML_build_error(LUSTRE_CFG_RC_BAD_PARAM, -1,
2823                                         "yaml", "helper", err_str, err_rc);
2824                         goto out;
2825                 }
2826
2827                 if (cYAML_is_sequence(child)) {
2828                         while ((head = cYAML_get_next_seq_item(child, &item))
2829                                != NULL) {
2830                                 rc = cb(head, show_rc, err_rc);
2831                                 if (rc != LUSTRE_CFG_RC_NO_ERR)
2832                                         return_rc = rc;
2833                         }
2834                 } else {
2835                         rc = cb(child, show_rc, err_rc);
2836                         if (rc != LUSTRE_CFG_RC_NO_ERR)
2837                                 return_rc = rc;
2838                 }
2839                 item = NULL;
2840                 child = child->cy_next;
2841         }
2842
2843 out:
2844         cYAML_free_tree(tree);
2845
2846         return return_rc;
2847 }
2848
2849 int lustre_yaml_config(char *f, struct cYAML **err_rc)
2850 {
2851         return lustre_yaml_cb_helper(f, lookup_config_tbl,
2852                                      NULL, err_rc);
2853 }
2854
2855 int lustre_yaml_del(char *f, struct cYAML **err_rc)
2856 {
2857         return lustre_yaml_cb_helper(f, lookup_del_tbl,
2858                                      NULL, err_rc);
2859 }
2860
2861 int lustre_yaml_show(char *f, struct cYAML **show_rc, struct cYAML **err_rc)
2862 {
2863         return lustre_yaml_cb_helper(f, lookup_show_tbl,
2864                                      show_rc, err_rc);
2865 }
2866
2867 int lustre_lnet_send_dbg_task(enum lnet_dbg_task dbg_task,
2868                               struct lnet_dbg_task_info *dbg_info,
2869                               struct cYAML **show_rc,
2870                               struct cYAML **err_rc)
2871 {
2872         struct lnet_ioctl_dbg *dbg;
2873         struct lnet_dbg_task_info *info;
2874         int rc = LUSTRE_CFG_RC_NO_ERR;
2875         char err_str[LNET_MAX_STR_LEN];
2876
2877         snprintf(err_str, sizeof(err_str), "\"success\"");
2878
2879         dbg = calloc(1, sizeof(*dbg) + sizeof(*info));
2880         if (!dbg) {
2881                 snprintf(err_str, sizeof(err_str), "\"out of memory\"");
2882                 rc = LUSTRE_CFG_RC_OUT_OF_MEM;
2883                 goto out;
2884         }
2885
2886         info = (struct lnet_dbg_task_info *)dbg->dbg_bulk;
2887
2888         LIBCFS_IOC_INIT_V2(*dbg, dbg_hdr);
2889
2890         dbg->dbg_task = dbg_task;
2891         if (dbg_info)
2892                 memcpy(info, dbg_info, sizeof(*info));
2893
2894         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_DBG, dbg);
2895         if (rc != 0) {
2896                 rc = -errno;
2897                 snprintf(err_str,
2898                          sizeof(err_str),
2899                          "\"debug task failed %s\"", strerror(errno));
2900                 goto out;
2901         }
2902
2903 out:
2904         cYAML_build_error(rc, -1, DBG_CMD,
2905                          "debug", err_str, err_rc);
2906
2907         return rc;
2908 }
2909