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, bool mr, 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         data.prcfg_mr = mr;
 374         if (nids[0] == LNET_NID_ANY) {
 375                 rc = dispatch_peer_ni_cmd(LNET_NID_ANY, key_nid,
 376                                           IOC_LIBCFS_ADD_PEER_NI,
 377                                           &data, err_str, "add");
 378                 goto out;
 379         }
 380
 381         while (nids[idx] != LNET_NID_ANY) {
 382                 /*
 383                  * If key_nid is not provided then the first nid in the
 384                  * list becomes the key_nid. First time round the loop use
 385                  * LNET_NID_ANY for the first parameter, then use nid[0]
 386                  * as the key nid after wards
 387                  */
 388                 rc = dispatch_peer_ni_cmd(key_nid, nids[idx],
 389                                           IOC_LIBCFS_ADD_PEER_NI, &data,
 390                                           err_str, "add");
 391
 392                 if (rc != 0)
 393                         goto out;
 394
 395                 if (idx == 0 && key_nid == LNET_NID_ANY)
 396                         key_nid = nids[0];
 397
 398                 idx++;
 399         }
 400
 401 out:
 402         if (nids != NULL)
 403                 free(nids);
 404         cYAML_build_error(rc, seq_no, ADD_CMD, "peer_ni", err_str, err_rc);
 405         return rc;
 406 }
 407
 408 int lustre_lnet_del_peer_nid(char *knid, char **nid, int seq_no,
 409                              struct cYAML **err_rc)
 410 {
 411         struct lnet_ioctl_peer_cfg data;
 412         lnet_nid_t key_nid;
 413         int rc = LUSTRE_CFG_RC_NO_ERR;
 414         int idx = 0;
 415         char err_str[LNET_MAX_STR_LEN] = {0};
 416         lnet_nid_t *nids = allocate_create_nid_array(nid, err_str);
 417
 418         if (knid == NULL) {
 419                 snprintf(err_str, sizeof(err_str),
 420                          "\"Primary nid is not provided\"");
 421                 rc = LUSTRE_CFG_RC_MISSING_PARAM;
 422                 goto out;
 423         } else {
 424                 key_nid = libcfs_str2nid(knid);
 425                 if (key_nid == LNET_NID_ANY) {
 426                         rc = LUSTRE_CFG_RC_BAD_PARAM;
 427                         snprintf(err_str, sizeof(err_str),
 428                                  "bad key NID: '%s'",
 429                                  knid);
 430                         goto out;
 431                 }
 432         }
 433
 434         snprintf(err_str, sizeof(err_str), "\"Success\"");
 435
 436         LIBCFS_IOC_INIT_V2(data, prcfg_hdr);
 437         if (nids[0] == LNET_NID_ANY) {
 438                 rc = dispatch_peer_ni_cmd(key_nid, LNET_NID_ANY,
 439                                           IOC_LIBCFS_DEL_PEER_NI,
 440                                           &data, err_str, "del");
 441                 goto out;
 442         }
 443
 444         while (nids[idx] != LNET_NID_ANY) {
 445                 rc = dispatch_peer_ni_cmd(key_nid, nids[idx],
 446                                           IOC_LIBCFS_DEL_PEER_NI, &data,
 447                                           err_str, "del");
 448
 449                 if (rc != 0)
 450                         goto out;
 451
 452                 idx++;
 453         }
 454
 455 out:
 456         if (nids != NULL)
 457                 free(nids);
 458         cYAML_build_error(rc, seq_no, DEL_CMD, "peer_ni", err_str, err_rc);
 459         return rc;
 460 }
 461
 462 int lustre_lnet_config_route(char *nw, char *gw, int hops, int prio,
 463                              int seq_no, struct cYAML **err_rc)
 464 {
 465         struct lnet_ioctl_config_data data;
 466         lnet_nid_t gateway_nid;
 467         int rc = LUSTRE_CFG_RC_NO_ERR;
 468         __u32 net = LNET_NIDNET(LNET_NID_ANY);
 469         char err_str[LNET_MAX_STR_LEN];
 470
 471         snprintf(err_str, sizeof(err_str), "\"Success\"");
 472
 473         if (nw == NULL || gw == NULL) {
 474                 snprintf(err_str,
 475                          sizeof(err_str),
 476                          "\"missing mandatory parameter(s): '%s'\"",
 477                          (nw == NULL && gw == NULL) ? "network, gateway" :
 478                          (nw == NULL) ? "network" : "gateway");
 479                 rc = LUSTRE_CFG_RC_MISSING_PARAM;
 480                 goto out;
 481         }
 482
 483         net = libcfs_str2net(nw);
 484         if (net == LNET_NIDNET(LNET_NID_ANY)) {
 485                 snprintf(err_str,
 486                          sizeof(err_str),
 487                          "\"cannot parse net %s\"", nw);
 488                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 489                 goto out;
 490         }
 491
 492         if (LNET_NETTYP(net) == CIBLND    ||
 493             LNET_NETTYP(net) == OPENIBLND ||
 494             LNET_NETTYP(net) == IIBLND    ||
 495             LNET_NETTYP(net) == VIBLND) {
 496                 snprintf(err_str,
 497                          sizeof(err_str),
 498                          "\"obselete LNet type '%s'\"", libcfs_lnd2str(net));
 499                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 500                 goto out;
 501         }
 502
 503         gateway_nid = libcfs_str2nid(gw);
 504         if (gateway_nid == LNET_NID_ANY) {
 505                 snprintf(err_str,
 506                         sizeof(err_str),
 507                         "\"cannot parse gateway NID '%s'\"", gw);
 508                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 509                 goto out;
 510         }
 511
 512         if (hops == -1) {
 513                 /* hops is undefined */
 514                 hops = LNET_UNDEFINED_HOPS;
 515         } else if (hops < 1 || hops > 255) {
 516                 snprintf(err_str,
 517                         sizeof(err_str),
 518                         "\"invalid hop count %d, must be between 1 and 255\"",
 519                         hops);
 520                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
 521                 goto out;
 522         }
 523
 524         if (prio == -1) {
 525                 prio = 0;
 526         } else if (prio < 0) {
 527                 snprintf(err_str,
 528                          sizeof(err_str),
 529                         "\"invalid priority %d, must be greater than 0\"",
 530                         prio);
 531                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
 532                 goto out;
 533         }
 534
 535         LIBCFS_IOC_INIT_V2(data, cfg_hdr);
 536         data.cfg_net = net;
 537         data.cfg_config_u.cfg_route.rtr_hop = hops;
 538         data.cfg_config_u.cfg_route.rtr_priority = prio;
 539         data.cfg_nid = gateway_nid;
 540
 541         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_ADD_ROUTE, &data);
 542         if (rc != 0) {
 543                 rc = -errno;
 544                 snprintf(err_str,
 545                          sizeof(err_str),
 546                          "\"cannot add route: %s\"", strerror(errno));
 547                 goto out;
 548         }
 549
 550 out:
 551         cYAML_build_error(rc, seq_no, ADD_CMD, "route", err_str, err_rc);
 552
 553         return rc;
 554 }
 555
 556 int lustre_lnet_del_route(char *nw, char *gw,
 557                           int seq_no, struct cYAML **err_rc)
 558 {
 559         struct lnet_ioctl_config_data data;
 560         lnet_nid_t gateway_nid;
 561         int rc = LUSTRE_CFG_RC_NO_ERR;
 562         __u32 net = LNET_NIDNET(LNET_NID_ANY);
 563         char err_str[LNET_MAX_STR_LEN];
 564
 565         snprintf(err_str, sizeof(err_str), "\"Success\"");
 566
 567         if (nw == NULL || gw == NULL) {
 568                 snprintf(err_str,
 569                          sizeof(err_str),
 570                          "\"missing mandatory parameter(s): '%s'\"",
 571                          (nw == NULL && gw == NULL) ? "network, gateway" :
 572                          (nw == NULL) ? "network" : "gateway");
 573                 rc = LUSTRE_CFG_RC_MISSING_PARAM;
 574                 goto out;
 575         }
 576
 577         net = libcfs_str2net(nw);
 578         if (net == LNET_NIDNET(LNET_NID_ANY)) {
 579                 snprintf(err_str,
 580                          sizeof(err_str),
 581                          "\"cannot parse net '%s'\"", nw);
 582                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 583                 goto out;
 584         }
 585
 586         if (LNET_NETTYP(net) == CIBLND    ||
 587             LNET_NETTYP(net) == OPENIBLND ||
 588             LNET_NETTYP(net) == IIBLND    ||
 589             LNET_NETTYP(net) == VIBLND) {
 590                 snprintf(err_str,
 591                          sizeof(err_str),
 592                          "\"obselete LNet type '%s'\"", libcfs_lnd2str(net));
 593                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 594                 goto out;
 595         }
 596
 597         gateway_nid = libcfs_str2nid(gw);
 598         if (gateway_nid == LNET_NID_ANY) {
 599                 snprintf(err_str,
 600                          sizeof(err_str),
 601                          "\"cannot parse gateway NID '%s'\"", gw);
 602                 rc = LUSTRE_CFG_RC_BAD_PARAM;
 603                 goto out;
 604         }
 605
 606         LIBCFS_IOC_INIT_V2(data, cfg_hdr);
 607         data.cfg_net = net;
 608         data.cfg_nid = gateway_nid;
 609
 610         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_DEL_ROUTE, &data);
 611         if (rc != 0) {
 612                 rc = -errno;
 613                 snprintf(err_str,
 614                          sizeof(err_str),
 615                          "\"cannot delete route: %s\"", strerror(errno));
 616                 goto out;
 617         }
 618
 619 out:
 620         cYAML_build_error(rc, seq_no, DEL_CMD, "route", err_str, err_rc);
 621
 622         return rc;
 623 }
 624
 625 int lustre_lnet_show_route(char *nw, char *gw, int hops, int prio, int detail,
 626                            int seq_no, struct cYAML **show_rc,
 627                            struct cYAML **err_rc)
 628 {
 629         struct lnet_ioctl_config_data data;
 630         lnet_nid_t gateway_nid;
 631         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
 632         int l_errno = 0;
 633         __u32 net = LNET_NIDNET(LNET_NID_ANY);
 634         int i;
 635         struct cYAML *root = NULL, *route = NULL, *item = NULL;
 636         struct cYAML *first_seq = NULL;
 637         char err_str[LNET_MAX_STR_LEN];
 638         bool exist = false;
 639
 640         snprintf(err_str, sizeof(err_str),
 641                  "\"out of memory\"");
 642
 643         if (nw != NULL) {
 644                 net = libcfs_str2net(nw);
 645                 if (net == LNET_NIDNET(LNET_NID_ANY)) {
 646                         snprintf(err_str,
 647                                  sizeof(err_str),
 648                                  "\"cannot parse net '%s'\"", nw);
 649                         rc = LUSTRE_CFG_RC_BAD_PARAM;
 650                         goto out;
 651                 }
 652
 653                 if (LNET_NETTYP(net) == CIBLND    ||
 654                     LNET_NETTYP(net) == OPENIBLND ||
 655                     LNET_NETTYP(net) == IIBLND    ||
 656                     LNET_NETTYP(net) == VIBLND) {
 657                         snprintf(err_str,
 658                                  sizeof(err_str),
 659                                  "\"obsolete LNet type '%s'\"",
 660                                  libcfs_lnd2str(net));
 661                         rc = LUSTRE_CFG_RC_BAD_PARAM;
 662                         goto out;
 663                 }
 664         } else {
 665                 /* show all routes without filtering on net */
 666                 net = LNET_NIDNET(LNET_NID_ANY);
 667         }
 668
 669         if (gw != NULL) {
 670                 gateway_nid = libcfs_str2nid(gw);
 671                 if (gateway_nid == LNET_NID_ANY) {
 672                         snprintf(err_str,
 673                                  sizeof(err_str),
 674                                  "\"cannot parse gateway NID '%s'\"", gw);
 675                         rc = LUSTRE_CFG_RC_BAD_PARAM;
 676                         goto out;
 677                 }
 678         } else
 679                 /* show all routes with out filtering on gateway */
 680                 gateway_nid = LNET_NID_ANY;
 681
 682         if ((hops < 1 && hops != -1) || hops > 255) {
 683                 snprintf(err_str,
 684                          sizeof(err_str),
 685                          "\"invalid hop count %d, must be between 0 and 256\"",
 686                          hops);
 687                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
 688                 goto out;
 689         }
 690
 691         /* create struct cYAML root object */
 692         root = cYAML_create_object(NULL, NULL);
 693         if (root == NULL)
 694                 goto out;
 695
 696         route = cYAML_create_seq(root, "route");
 697         if (route == NULL)
 698                 goto out;
 699
 700         for (i = 0;; i++) {
 701                 LIBCFS_IOC_INIT_V2(data, cfg_hdr);
 702                 data.cfg_count = i;
 703
 704                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_ROUTE, &data);
 705                 if (rc != 0) {
 706                         l_errno = errno;
 707                         break;
 708                 }
 709
 710                 /* filter on provided data */
 711                 if (net != LNET_NIDNET(LNET_NID_ANY) &&
 712                     net != data.cfg_net)
 713                         continue;
 714
 715                 if (gateway_nid != LNET_NID_ANY &&
 716                     gateway_nid != data.cfg_nid)
 717                         continue;
 718
 719                 if (hops != -1 &&
 720                     hops != data.cfg_config_u.cfg_route.rtr_hop)
 721                         continue;
 722
 723                 if (prio != -1 &&
 724                     prio != data.cfg_config_u.cfg_route.rtr_priority)
 725                         continue;
 726
 727                 /* default rc to -1 incase we hit the goto */
 728                 rc = -1;
 729                 exist = true;
 730
 731                 item = cYAML_create_seq_item(route);
 732                 if (item == NULL)
 733                         goto out;
 734
 735                 if (first_seq == NULL)
 736                         first_seq = item;
 737
 738                 if (cYAML_create_string(item, "net",
 739                                         libcfs_net2str(data.cfg_net)) == NULL)
 740                         goto out;
 741
 742                 if (cYAML_create_string(item, "gateway",
 743                                         libcfs_nid2str(data.cfg_nid)) == NULL)
 744                         goto out;
 745
 746                 if (detail) {
 747                         if (cYAML_create_number(item, "hop",
 748                                                 data.cfg_config_u.cfg_route.
 749                                                         rtr_hop) ==
 750                             NULL)
 751                                 goto out;
 752
 753                         if (cYAML_create_number(item, "priority",
 754                                                 data.cfg_config_u.
 755                                                 cfg_route.rtr_priority) == NULL)
 756                                 goto out;
 757
 758                         if (cYAML_create_string(item, "state",
 759                                                 data.cfg_config_u.cfg_route.
 760                                                         rtr_flags ?
 761                                                 "up" : "down") == NULL)
 762                                 goto out;
 763                 }
 764         }
 765
 766         /* print output iff show_rc is not provided */
 767         if (show_rc == NULL)
 768                 cYAML_print_tree(root);
 769
 770         if (l_errno != ENOENT) {
 771                 snprintf(err_str,
 772                          sizeof(err_str),
 773                          "\"cannot get routes: %s\"",
 774                          strerror(l_errno));
 775                 rc = -l_errno;
 776                 goto out;
 777         } else
 778                 rc = LUSTRE_CFG_RC_NO_ERR;
 779
 780         snprintf(err_str, sizeof(err_str), "\"success\"");
 781 out:
 782         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR || !exist) {
 783                 cYAML_free_tree(root);
 784         } else if (show_rc != NULL && *show_rc != NULL) {
 785                 struct cYAML *show_node;
 786                 /* find the route node, if one doesn't exist then
 787                  * insert one.  Otherwise add to the one there
 788                  */
 789                 show_node = cYAML_get_object_item(*show_rc, "route");
 790                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
 791                         cYAML_insert_child(show_node, first_seq);
 792                         free(route);
 793                         free(root);
 794                 } else if (show_node == NULL) {
 795                         cYAML_insert_sibling((*show_rc)->cy_child,
 796                                                 route);
 797                         free(root);
 798                 } else {
 799                         cYAML_free_tree(root);
 800                 }
 801         } else {
 802                 *show_rc = root;
 803         }
 804
 805         cYAML_build_error(rc, seq_no, SHOW_CMD, "route", err_str, err_rc);
 806
 807         return rc;
 808 }
 809
 810 static int socket_intf_query(int request, char *intf,
 811                              struct ifreq *ifr)
 812 {
 813         int rc;
 814         int sockfd;
 815
 816         if (strlen(intf) >= IFNAMSIZ || ifr == NULL)
 817                 return LUSTRE_CFG_RC_BAD_PARAM;
 818
 819         sockfd = socket(AF_INET, SOCK_DGRAM, 0);
 820         if (sockfd < 0)
 821                 return LUSTRE_CFG_RC_BAD_PARAM;
 822
 823         strcpy(ifr->ifr_name, intf);
 824         rc = ioctl(sockfd, request, ifr);
 825         if (rc != 0)
 826                 return LUSTRE_CFG_RC_BAD_PARAM;
 827
 828         return 0;
 829 }
 830
 831 /*
 832  * for each interface in the array of interfaces find the IP address of
 833  * that interface, create its nid and add it to an array of NIDs.
 834  * Stop if any of the interfaces is down
 835  */
 836 static int lustre_lnet_intf2nids(struct lnet_dlc_network_descr *nw,
 837                                  lnet_nid_t **nids, __u32 *nnids)
 838 {
 839         int i = 0, count = 0, rc;
 840         struct ifreq ifr;
 841         __u32 ip;
 842         struct lnet_dlc_intf_descr *intf;
 843
 844         if (nw == NULL || nids == NULL)
 845                 return LUSTRE_CFG_RC_BAD_PARAM;
 846
 847         list_for_each_entry(intf, &nw->nw_intflist, intf_on_network)
 848                 count++;
 849
 850         *nids = calloc(count, sizeof(lnet_nid_t));
 851         if (*nids == NULL)
 852                 return LUSTRE_CFG_RC_OUT_OF_MEM;
 853
 854         list_for_each_entry(intf, &nw->nw_intflist, intf_on_network) {
 855                 memset(&ifr, 0, sizeof(ifr));
 856                 rc = socket_intf_query(SIOCGIFFLAGS, intf->intf_name, &ifr);
 857                 if (rc != 0)
 858                         goto failed;
 859
 860                 if ((ifr.ifr_flags & IFF_UP) == 0) {
 861                         rc = LUSTRE_CFG_RC_BAD_PARAM;
 862                         goto failed;
 863                 }
 864
 865                 memset(&ifr, 0, sizeof(ifr));
 866                 rc = socket_intf_query(SIOCGIFADDR, intf->intf_name, &ifr);
 867                 if (rc != 0)
 868                         goto failed;
 869
 870                 ip = ((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr.s_addr;
 871                 ip = bswap_32(ip);
 872                 (*nids)[i] = LNET_MKNID(nw->nw_id, ip);
 873                 i++;
 874         }
 875
 876         *nnids = count;
 877
 878         return 0;
 879
 880 failed:
 881         free(*nids);
 882         *nids = NULL;
 883         return rc;
 884 }
 885
 886 /*
 887  * called repeatedly until a match or no more ip range
 888  * What do you have?
 889  *      ip_range expression
 890  *      interface list with all the interface names.
 891  *      all the interfaces in the system.
 892  *
 893  *      try to match the ip_range expr to one of the interfaces' IPs in
 894  *      the system. If we hit a patch for an interface. Check if that
 895  *      interface name is in the list.
 896  *
 897  *      If there are more than one interface in the list, then make sure
 898  *      that the IPs for all of these interfaces match the ip ranges
 899  *      given.
 900  *
 901  *      for each interface in intf_list
 902  *              look up the intf name in ifa
 903  *              if not there then no match
 904  *              check ip obtained from ifa against a match to any of the
 905  *              ip_ranges given.
 906  *              If no match, then fail
 907  *
 908  *      The result is that all the interfaces have to match.
 909  */
 910 int lustre_lnet_match_ip_to_intf(struct ifaddrs *ifa,
 911                                  struct list_head *intf_list,
 912                                  struct list_head *ip_ranges)
 913 {
 914         int rc;
 915         __u32 ip;
 916         struct lnet_dlc_intf_descr *intf_descr;
 917         struct ifaddrs *ifaddr = ifa;
 918         struct lustre_lnet_ip_range_descr *ip_range;
 919         int family;
 920
 921         /*
 922          * if there are no explicit interfaces, and no ip ranges, then
 923          * configure the first tcp interface we encounter.
 924          */
 925         if (list_empty(intf_list) && list_empty(ip_ranges)) {
 926                 for (ifaddr = ifa; ifaddr != NULL; ifaddr = ifaddr->ifa_next) {
 927                         if (ifaddr->ifa_addr == NULL)
 928                                 continue;
 929
 930                         if ((ifaddr->ifa_flags & IFF_UP) == 0)
 931                                 continue;
 932
 933                         family = ifaddr->ifa_addr->sa_family;
 934                         if (family == AF_INET) {
 935                                 rc = lustre_lnet_add_intf_descr
 936                                         (intf_list, ifaddr->ifa_name,
 937                                         strlen(ifaddr->ifa_name));
 938
 939                                 if (rc != LUSTRE_CFG_RC_NO_ERR)
 940                                         return rc;
 941
 942                                 return LUSTRE_CFG_RC_MATCH;
 943                         }
 944                 }
 945                 return LUSTRE_CFG_RC_NO_MATCH;
 946         }
 947
 948         /*
 949          * First interface which matches an IP pattern will be used
 950          */
 951         if (list_empty(intf_list)) {
 952                 /*
 953                  * no interfaces provided in the rule, but an ip range is
 954                  * provided, so try and match an interface to the ip
 955                  * range.
 956                  */
 957                 for (ifaddr = ifa; ifaddr != NULL; ifaddr = ifaddr->ifa_next) {
 958                         if (ifaddr->ifa_addr == NULL)
 959                                 continue;
 960
 961                         if ((ifaddr->ifa_flags & IFF_UP) == 0)
 962                                 continue;
 963
 964                         family = ifaddr->ifa_addr->sa_family;
 965                         if (family == AF_INET) {
 966                                 ip = ((struct sockaddr_in *)ifaddr->ifa_addr)->
 967                                         sin_addr.s_addr;
 968
 969                                 list_for_each_entry(ip_range, ip_ranges,
 970                                                     ipr_entry) {
 971                                         rc = cfs_ip_addr_match(bswap_32(ip),
 972                                                         &ip_range->ipr_expr);
 973                                         if (!rc)
 974                                                 continue;
 975
 976                                         rc = lustre_lnet_add_intf_descr
 977                                           (intf_list, ifaddr->ifa_name,
 978                                            strlen(ifaddr->ifa_name));
 979
 980                                         if (rc != LUSTRE_CFG_RC_NO_ERR)
 981                                                 return rc;
 982
 983                                         return LUSTRE_CFG_RC_MATCH;
 984                                 }
 985                         }
 986                 }
 987         }
 988
 989         /*
 990          * If an interface is explicitly specified the ip-range might or
 991          * might not be specified. if specified the interface needs to match the
 992          * ip-range. If no ip-range then the interfaces are
 993          * automatically matched if they are all up.
 994          * If > 1 interfaces all the interfaces must match for the NI to
 995          * be configured.
 996          */
 997         list_for_each_entry(intf_descr, intf_list, intf_on_network) {
 998                 for (ifaddr = ifa; ifaddr != NULL; ifaddr = ifaddr->ifa_next) {
 999                         if (ifaddr->ifa_addr == NULL)
1000                                 continue;
1001
1002                         family = ifaddr->ifa_addr->sa_family;
1003                         if (family == AF_INET &&
1004                             strcmp(intf_descr->intf_name,
1005                                    ifaddr->ifa_name) == 0)
1006                                 break;
1007                 }
1008
1009                 if (ifaddr == NULL)
1010                         return LUSTRE_CFG_RC_NO_MATCH;
1011
1012                 if ((ifaddr->ifa_flags & IFF_UP) == 0)
1013                         return LUSTRE_CFG_RC_NO_MATCH;
1014
1015                 ip = ((struct sockaddr_in *)ifaddr->ifa_addr)->sin_addr.s_addr;
1016
1017                 list_for_each_entry(ip_range, ip_ranges, ipr_entry) {
1018                         rc = cfs_ip_addr_match(bswap_32(ip), &ip_range->ipr_expr);
1019                         if (rc)
1020                                 break;
1021                         else
1022                                 return LUSTRE_CFG_RC_NO_MATCH;
1023                 }
1024         }
1025
1026         return LUSTRE_CFG_RC_MATCH;
1027 }
1028
1029 int lustre_lnet_resolve_ip2nets_rule(struct lustre_lnet_ip2nets *ip2nets,
1030                                      lnet_nid_t **nids, __u32 *nnids)
1031 {
1032         struct ifaddrs *ifa;
1033         int rc = LUSTRE_CFG_RC_NO_ERR;
1034
1035         rc = getifaddrs(&ifa);
1036         if (rc < 0)
1037                 return -errno;
1038
1039         rc = lustre_lnet_match_ip_to_intf(ifa,
1040                                           &ip2nets->ip2nets_net.nw_intflist,
1041                                           &ip2nets->ip2nets_ip_ranges);
1042         if (rc != LUSTRE_CFG_RC_MATCH) {
1043                 freeifaddrs(ifa);
1044                 return rc;
1045         }
1046
1047         rc = lustre_lnet_intf2nids(&ip2nets->ip2nets_net, nids, nnids);
1048         if (rc != LUSTRE_CFG_RC_NO_ERR) {
1049                 *nids = NULL;
1050                 *nnids = 0;
1051         }
1052
1053         freeifaddrs(ifa);
1054
1055         return rc;
1056 }
1057
1058 static int
1059 lustre_lnet_ioctl_config_ni(struct list_head *intf_list,
1060                             struct lnet_ioctl_config_lnd_tunables *tunables,
1061                             struct cfs_expr_list *global_cpts,
1062                             lnet_nid_t *nids, char *err_str)
1063 {
1064         char *data;
1065         struct lnet_ioctl_config_ni *conf;
1066         struct lnet_ioctl_config_lnd_tunables *tun = NULL;
1067         int rc = LUSTRE_CFG_RC_NO_ERR, i = 0;
1068         size_t len;
1069         int count;
1070         struct lnet_dlc_intf_descr *intf_descr;
1071         __u32 *cpt_array;
1072         struct cfs_expr_list *cpt_expr;
1073
1074         list_for_each_entry(intf_descr, intf_list,
1075                             intf_on_network) {
1076                 if (i == 0 && tunables != NULL)
1077                         len = sizeof(struct lnet_ioctl_config_ni) +
1078                               sizeof(struct lnet_ioctl_config_lnd_tunables);
1079                 else
1080                         len = sizeof(struct lnet_ioctl_config_ni);
1081
1082                 data = calloc(1, len);
1083                 conf = (struct lnet_ioctl_config_ni*) data;
1084                 if (i == 0 && tunables != NULL)
1085                         tun = (struct lnet_ioctl_config_lnd_tunables*)
1086                                 (data + sizeof(*conf));
1087
1088                 LIBCFS_IOC_INIT_V2(*conf, lic_cfg_hdr);
1089                 conf->lic_cfg_hdr.ioc_len = len;
1090                 conf->lic_nid = nids[i];
1091                 strncpy(conf->lic_ni_intf[0], intf_descr->intf_name,
1092                         LNET_MAX_STR_LEN);
1093
1094                 if (intf_descr->cpt_expr != NULL)
1095                         cpt_expr = intf_descr->cpt_expr;
1096                 else if (global_cpts != NULL)
1097                         cpt_expr = global_cpts;
1098                 else
1099                         cpt_expr = NULL;
1100
1101                 if (cpt_expr != NULL) {
1102                         count = cfs_expr_list_values(cpt_expr,
1103                                                      LNET_MAX_SHOW_NUM_CPT,
1104                                                      &cpt_array);
1105                         if (count > 0) {
1106                                 memcpy(conf->lic_cpts, cpt_array,
1107                                        sizeof(cpt_array[0]) * LNET_MAX_STR_LEN);
1108                                 free(cpt_array);
1109                         } else {
1110                                 count = 0;
1111                         }
1112                 } else {
1113                         count = 0;
1114                 }
1115
1116                 conf->lic_ncpts = count;
1117
1118                 if (i == 0 && tunables != NULL)
1119                         /* TODO put in the LND tunables */
1120                         memcpy(tun, tunables, sizeof(*tunables));
1121
1122                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_ADD_LOCAL_NI, data);
1123                 if (rc < 0) {
1124                         rc = -errno;
1125                         snprintf(err_str,
1126                                  LNET_MAX_STR_LEN,
1127                                  "\"cannot add network: %s\"", strerror(errno));
1128                         return rc;
1129                 }
1130                 i++;
1131         }
1132
1133         return LUSTRE_CFG_RC_NO_ERR;
1134 }
1135
1136 int
1137 lustre_lnet_config_ip2nets(struct lustre_lnet_ip2nets *ip2nets,
1138                            struct lnet_ioctl_config_lnd_tunables *tunables,
1139                            struct cfs_expr_list *global_cpts,
1140                            int seq_no, struct cYAML **err_rc)
1141 {
1142         lnet_nid_t *nids = NULL;
1143         __u32 nnids = 0;
1144         int rc;
1145         char err_str[LNET_MAX_STR_LEN];
1146
1147         snprintf(err_str, sizeof(err_str), "\"success\"");
1148
1149         if (ip2nets == NULL ||
1150             list_empty(&ip2nets->ip2nets_net.nw_intflist)) {
1151                 snprintf(err_str,
1152                          sizeof(err_str),
1153                          "\"incomplete ip2nets information\"");
1154                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1155                 goto out;
1156         }
1157
1158         rc = lustre_lnet_resolve_ip2nets_rule(ip2nets, &nids, &nnids);
1159         if (rc != LUSTRE_CFG_RC_NO_ERR && rc != LUSTRE_CFG_RC_MATCH) {
1160                 snprintf(err_str,
1161                          sizeof(err_str),
1162                          "\"cannot resolve ip2nets rule\"");
1163                 goto out;
1164         }
1165
1166         rc = lustre_lnet_ioctl_config_ni(&ip2nets->ip2nets_net.nw_intflist,
1167                                          tunables, global_cpts, nids,
1168                                          err_str);
1169         if (rc != LUSTRE_CFG_RC_NO_ERR)
1170                 free(nids);
1171
1172 out:
1173         cYAML_build_error(rc, seq_no, ADD_CMD, "ip2nets", err_str, err_rc);
1174         return rc;
1175 }
1176
1177 int lustre_lnet_config_ni(struct lnet_dlc_network_descr *nw_descr,
1178                           struct cfs_expr_list *global_cpts,
1179                           char *ip2net,
1180                           struct lnet_ioctl_config_lnd_tunables *tunables,
1181                           int seq_no, struct cYAML **err_rc)
1182 {
1183         char *data = NULL;
1184         struct lnet_ioctl_config_ni *conf;
1185         struct lnet_ioctl_config_lnd_tunables *tun = NULL;
1186         char buf[LNET_MAX_STR_LEN];
1187         int rc = LUSTRE_CFG_RC_NO_ERR;
1188         char err_str[LNET_MAX_STR_LEN];
1189         lnet_nid_t *nids = NULL;
1190         __u32 nnids = 0;
1191         size_t len;
1192         int count;
1193         struct lnet_dlc_intf_descr *intf_descr, *tmp;
1194         __u32 *cpt_array;
1195
1196         snprintf(err_str, sizeof(err_str), "\"success\"");
1197
1198         if (ip2net == NULL && nw_descr == NULL) {
1199                 snprintf(err_str,
1200                          sizeof(err_str),
1201                          "\"mandatory parameters not specified.\"");
1202                 rc = LUSTRE_CFG_RC_MISSING_PARAM;
1203                 goto out;
1204         }
1205
1206         if (ip2net != NULL && strlen(ip2net) >= sizeof(buf)) {
1207                 snprintf(err_str,
1208                          sizeof(err_str),
1209                          "\"ip2net string too long %d\"",
1210                                 (int)strlen(ip2net));
1211                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
1212                 goto out;
1213         }
1214
1215         if (ip2net != NULL) {
1216                 if (tunables != NULL)
1217                         len = sizeof(struct lnet_ioctl_config_ni) +
1218                               sizeof(struct lnet_ioctl_config_lnd_tunables);
1219                 else
1220                         len = sizeof(struct lnet_ioctl_config_ni);
1221                 data = calloc(1, len);
1222                 conf = (struct lnet_ioctl_config_ni*) data;
1223                 if (tunables != NULL)
1224                         tun = (struct lnet_ioctl_config_lnd_tunables*)
1225                                 (data + sizeof(*conf));
1226
1227                 LIBCFS_IOC_INIT_V2(*conf, lic_cfg_hdr);
1228                 conf->lic_cfg_hdr.ioc_len = len;
1229                 strncpy(conf->lic_legacy_ip2nets, ip2net,
1230                         LNET_MAX_STR_LEN);
1231
1232                 if (global_cpts != NULL) {
1233                         count = cfs_expr_list_values(global_cpts,
1234                                                      LNET_MAX_SHOW_NUM_CPT,
1235                                                      &cpt_array);
1236                         if (count > 0) {
1237                                 memcpy(conf->lic_cpts, cpt_array,
1238                                        sizeof(cpt_array[0]) * LNET_MAX_STR_LEN);
1239                                 free(cpt_array);
1240                         } else {
1241                                 count = 0;
1242                         }
1243                 } else {
1244                         count = 0;
1245                 }
1246
1247                 conf->lic_ncpts = count;
1248
1249                 if (tunables != NULL)
1250                         memcpy(tun, tunables, sizeof(*tunables));
1251
1252                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_ADD_LOCAL_NI, data);
1253                 if (rc < 0) {
1254                         rc = -errno;
1255                         snprintf(err_str,
1256                                 sizeof(err_str),
1257                                 "\"cannot add network: %s\"", strerror(errno));
1258                         goto out;
1259                 }
1260
1261                 goto out;
1262         }
1263
1264         if (LNET_NETTYP(nw_descr->nw_id) == LOLND)
1265                 return LUSTRE_CFG_RC_NO_ERR;
1266
1267         if (nw_descr->nw_id == LNET_NIDNET(LNET_NID_ANY)) {
1268                 snprintf(err_str,
1269                         sizeof(err_str),
1270                         "\"cannot parse net '%s'\"",
1271                         libcfs_net2str(nw_descr->nw_id));
1272                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1273                 goto out;
1274         }
1275
1276         if (list_empty(&nw_descr->nw_intflist)) {
1277                 snprintf(err_str,
1278                         sizeof(err_str),
1279                         "\"no interface name provided\"");
1280                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1281                 goto out;
1282         }
1283
1284         rc = lustre_lnet_intf2nids(nw_descr, &nids, &nnids);
1285         if (rc != 0) {
1286                 snprintf(err_str, sizeof(err_str),
1287                          "\"bad parameter\"");
1288                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1289                 goto out;
1290         }
1291
1292         rc = lustre_lnet_ioctl_config_ni(&nw_descr->nw_intflist,
1293                                          tunables, global_cpts, nids,
1294                                          err_str);
1295
1296 out:
1297         if (nw_descr != NULL) {
1298                 list_for_each_entry_safe(intf_descr, tmp,
1299                                          &nw_descr->nw_intflist,
1300                                          intf_on_network) {
1301                         if (intf_descr->cpt_expr != NULL)
1302                                 cfs_expr_list_free(intf_descr->cpt_expr);
1303                         free(intf_descr);
1304                 }
1305         }
1306
1307         cYAML_build_error(rc, seq_no, ADD_CMD, "net", err_str, err_rc);
1308
1309         if (nids)
1310                 free(nids);
1311
1312         if (data)
1313                 free(data);
1314
1315         return rc;
1316 }
1317
1318 int lustre_lnet_del_ni(struct lnet_dlc_network_descr *nw_descr,
1319                        int seq_no, struct cYAML **err_rc)
1320 {
1321         struct lnet_ioctl_config_ni data;
1322         int rc = LUSTRE_CFG_RC_NO_ERR, i;
1323         char err_str[LNET_MAX_STR_LEN];
1324         lnet_nid_t *nids = NULL;
1325         __u32 nnids = 0;
1326         struct lnet_dlc_intf_descr *intf_descr, *tmp;
1327
1328         if (LNET_NETTYP(nw_descr->nw_id) == LOLND)
1329                 return LUSTRE_CFG_RC_NO_ERR;
1330
1331         snprintf(err_str, sizeof(err_str), "\"success\"");
1332
1333         if (nw_descr == NULL) {
1334                 snprintf(err_str,
1335                          sizeof(err_str),
1336                          "\"missing mandatory parameter\"");
1337                 rc = LUSTRE_CFG_RC_MISSING_PARAM;
1338                 goto out;
1339         }
1340
1341         if (nw_descr->nw_id == LNET_NIDNET(LNET_NID_ANY)) {
1342                 snprintf(err_str,
1343                          sizeof(err_str),
1344                          "\"cannot parse net '%s'\"",
1345                          libcfs_net2str(nw_descr->nw_id));
1346                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1347                 goto out;
1348         }
1349
1350         rc = lustre_lnet_intf2nids(nw_descr, &nids, &nnids);
1351         if (rc != 0) {
1352                 snprintf(err_str, sizeof(err_str),
1353                          "\"bad parameter\"");
1354                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1355                 goto out;
1356         }
1357
1358         /*
1359          * no interfaces just the nw_id is specified
1360          */
1361         if (nnids == 0) {
1362                 nids = calloc(1, sizeof(*nids));
1363                 if (nids == NULL) {
1364                         snprintf(err_str, sizeof(err_str),
1365                                 "\"out of memory\"");
1366                         rc = LUSTRE_CFG_RC_OUT_OF_MEM;
1367                         goto out;
1368                 }
1369                 nids[0] = LNET_MKNID(nw_descr->nw_id, 0);
1370                 nnids = 1;
1371         }
1372
1373         for (i = 0; i < nnids; i++) {
1374                 LIBCFS_IOC_INIT_V2(data, lic_cfg_hdr);
1375                 data.lic_nid = nids[i];
1376
1377                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_DEL_LOCAL_NI, &data);
1378                 if (rc < 0) {
1379                         rc = -errno;
1380                         snprintf(err_str,
1381                                 sizeof(err_str),
1382                                 "\"cannot del network: %s\"", strerror(errno));
1383                 }
1384         }
1385
1386         list_for_each_entry_safe(intf_descr, tmp, &nw_descr->nw_intflist,
1387                                  intf_on_network) {
1388                 if (intf_descr->cpt_expr != NULL)
1389                         cfs_expr_list_free(intf_descr->cpt_expr);
1390                 free(intf_descr);
1391         }
1392
1393 out:
1394         cYAML_build_error(rc, seq_no, DEL_CMD, "net", err_str, err_rc);
1395
1396         if (nids != NULL)
1397                 free(nids);
1398
1399         return rc;
1400 }
1401
1402 int lustre_lnet_show_net(char *nw, int detail, int seq_no,
1403                          struct cYAML **show_rc, struct cYAML **err_rc)
1404 {
1405         char *buf;
1406         struct lnet_ioctl_config_ni *ni_data;
1407         struct lnet_ioctl_config_lnd_tunables *lnd;
1408         __u32 net = LNET_NIDNET(LNET_NID_ANY);
1409         __u32 prev_net = LNET_NIDNET(LNET_NID_ANY);
1410         int rc = LUSTRE_CFG_RC_OUT_OF_MEM, i, j;
1411         int l_errno = 0;
1412         struct cYAML *root = NULL, *tunables = NULL,
1413                 *net_node = NULL, *interfaces = NULL,
1414                 *item = NULL, *first_seq = NULL,
1415                 *tmp = NULL;
1416         int str_buf_len = LNET_MAX_SHOW_NUM_CPT * 2;
1417         char str_buf[str_buf_len];
1418         char *pos;
1419         char err_str[LNET_MAX_STR_LEN];
1420         bool exist = false, new_net = true;
1421         int net_num = 0;
1422         size_t buf_size = sizeof(*ni_data) + sizeof(*lnd);
1423
1424         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
1425
1426         buf = calloc(1, buf_size);
1427         if (buf == NULL)
1428                 goto out;
1429
1430         ni_data = (struct lnet_ioctl_config_ni *)buf;
1431
1432         if (nw != NULL) {
1433                 net = libcfs_str2net(nw);
1434                 if (net == LNET_NIDNET(LNET_NID_ANY)) {
1435                         snprintf(err_str,
1436                                  sizeof(err_str),
1437                                  "\"cannot parse net '%s'\"", nw);
1438                         rc = LUSTRE_CFG_RC_BAD_PARAM;
1439                         goto out;
1440                 }
1441         }
1442
1443         root = cYAML_create_object(NULL, NULL);
1444         if (root == NULL)
1445                 goto out;
1446
1447         net_node = cYAML_create_seq(root, "net");
1448         if (net_node == NULL)
1449                 goto out;
1450
1451         for (i = 0;; i++) {
1452                 pos = str_buf;
1453                 __u32 rc_net;
1454
1455                 memset(buf, 0, buf_size);
1456
1457                 LIBCFS_IOC_INIT_V2(*ni_data, lic_cfg_hdr);
1458                 /*
1459                  * set the ioc_len to the proper value since INIT assumes
1460                  * size of data
1461                  */
1462                 ni_data->lic_cfg_hdr.ioc_len = buf_size;
1463                 ni_data->lic_idx = i;
1464
1465                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_LOCAL_NI, ni_data);
1466                 if (rc != 0) {
1467                         l_errno = errno;
1468                         break;
1469                 }
1470
1471                 rc_net = LNET_NIDNET(ni_data->lic_nid);
1472
1473                 /* filter on provided data */
1474                 if (net != LNET_NIDNET(LNET_NID_ANY) &&
1475                     net != rc_net)
1476                         continue;
1477
1478                 /* default rc to -1 in case we hit the goto */
1479                 rc = -1;
1480                 exist = true;
1481
1482                 lnd = (struct lnet_ioctl_config_lnd_tunables *)ni_data->lic_bulk;
1483
1484                 if (rc_net != prev_net) {
1485                         prev_net = rc_net;
1486                         new_net = true;
1487                         net_num++;
1488                 }
1489
1490                 if (new_net) {
1491                         if (!cYAML_create_string(net_node, "net type",
1492                                                  libcfs_net2str(rc_net)))
1493                                 goto out;
1494
1495                         tmp = cYAML_create_seq(net_node, "local NI(s)");
1496                         if (tmp == NULL)
1497                                 goto out;
1498                         new_net = false;
1499                 }
1500
1501                 /* create the tree to be printed. */
1502                 item = cYAML_create_seq_item(tmp);
1503                 if (item == NULL)
1504                         goto out;
1505
1506                 if (first_seq == NULL)
1507                         first_seq = item;
1508
1509                 if (cYAML_create_string(item, "nid",
1510                                         libcfs_nid2str(ni_data->lic_nid)) == NULL)
1511                         goto out;
1512
1513                 if (cYAML_create_string(item,
1514                                         "status",
1515                                         (ni_data->lic_status ==
1516                                           LNET_NI_STATUS_UP) ?
1517                                             "up" : "down") == NULL)
1518                         goto out;
1519
1520                 /* don't add interfaces unless there is at least one
1521                  * interface */
1522                 if (strlen(ni_data->lic_ni_intf[0]) > 0) {
1523                         interfaces = cYAML_create_object(item, "interfaces");
1524                         if (interfaces == NULL)
1525                                 goto out;
1526
1527                         for (j = 0; j < LNET_MAX_INTERFACES; j++) {
1528                                 if (strlen(ni_data->lic_ni_intf[j]) > 0) {
1529                                         snprintf(str_buf,
1530                                                  sizeof(str_buf), "%d", j);
1531                                         if (cYAML_create_string(interfaces,
1532                                                 str_buf,
1533                                                 ni_data->lic_ni_intf[j]) ==
1534                                                         NULL)
1535                                                 goto out;
1536                                 }
1537                         }
1538                 }
1539
1540                 if (detail) {
1541                         char *limit;
1542
1543                         tunables = cYAML_create_object(item, "tunables");
1544                         if (!tunables)
1545                                 goto out;
1546
1547                         rc = lustre_net_show_tunables(tunables, &lnd->lt_cmn);
1548                         if (rc != LUSTRE_CFG_RC_NO_ERR)
1549                                 goto out;
1550
1551                         tunables = cYAML_create_object(item, "lnd tunables");
1552                         if (tunables == NULL)
1553                                 goto out;
1554
1555                         rc = lustre_ni_show_tunables(tunables, LNET_NETTYP(rc_net),
1556                                                      &lnd->lt_tun);
1557                         if (rc != LUSTRE_CFG_RC_NO_ERR)
1558                                 goto out;
1559
1560                         if (cYAML_create_number(item, "tcp bonding",
1561                                                 ni_data->lic_tcp_bonding)
1562                                                         == NULL)
1563                                 goto out;
1564
1565                         if (cYAML_create_number(item, "dev cpt",
1566                                                 ni_data->lic_dev_cpt) == NULL)
1567                                 goto out;
1568
1569                         /* out put the CPTs in the format: "[x,x,x,...]" */
1570                         limit = str_buf + str_buf_len - 3;
1571                         pos += snprintf(pos, limit - pos, "\"[");
1572                         for (j = 0 ; ni_data->lic_ncpts >= 1 &&
1573                                 j < ni_data->lic_ncpts &&
1574                                 pos < limit; j++) {
1575                                 pos += snprintf(pos, limit - pos,
1576                                                 "%d", ni_data->lic_cpts[j]);
1577                                 if ((j + 1) < ni_data->lic_ncpts)
1578                                         pos += snprintf(pos, limit - pos, ",");
1579                         }
1580                         pos += snprintf(pos, 3, "]\"");
1581
1582                         if (ni_data->lic_ncpts >= 1 &&
1583                             cYAML_create_string(item, "CPT",
1584                                                 str_buf) == NULL)
1585                                 goto out;
1586                 }
1587         }
1588
1589         /* Print out the net information only if show_rc is not provided */
1590         if (show_rc == NULL)
1591                 cYAML_print_tree(root);
1592
1593         if (l_errno != ENOENT) {
1594                 snprintf(err_str,
1595                          sizeof(err_str),
1596                          "\"cannot get networks: %s\"",
1597                          strerror(l_errno));
1598                 rc = -l_errno;
1599                 goto out;
1600         } else
1601                 rc = LUSTRE_CFG_RC_NO_ERR;
1602
1603         snprintf(err_str, sizeof(err_str), "\"success\"");
1604 out:
1605         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR || !exist) {
1606                 cYAML_free_tree(root);
1607         } else if (show_rc != NULL && *show_rc != NULL) {
1608                 struct cYAML *show_node;
1609                 /* find the net node, if one doesn't exist
1610                  * then insert one.  Otherwise add to the one there
1611                  */
1612                 show_node = cYAML_get_object_item(*show_rc, "net");
1613                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
1614                         cYAML_insert_child(show_node, first_seq);
1615                         free(net_node);
1616                         free(root);
1617                 } else if (show_node == NULL) {
1618                         cYAML_insert_sibling((*show_rc)->cy_child,
1619                                                 net_node);
1620                         free(root);
1621                 } else {
1622                         cYAML_free_tree(root);
1623                 }
1624         } else {
1625                 *show_rc = root;
1626         }
1627
1628         cYAML_build_error(rc, seq_no, SHOW_CMD, "net", err_str, err_rc);
1629
1630         return rc;
1631 }
1632
1633 int lustre_lnet_enable_routing(int enable, int seq_no, struct cYAML **err_rc)
1634 {
1635         struct lnet_ioctl_config_data data;
1636         int rc = LUSTRE_CFG_RC_NO_ERR;
1637         char err_str[LNET_MAX_STR_LEN];
1638
1639         snprintf(err_str, sizeof(err_str), "\"success\"");
1640
1641         LIBCFS_IOC_INIT_V2(data, cfg_hdr);
1642         data.cfg_config_u.cfg_buffers.buf_enable = (enable) ? 1 : 0;
1643
1644         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_CONFIG_RTR, &data);
1645         if (rc != 0) {
1646                 rc = -errno;
1647                 snprintf(err_str,
1648                          sizeof(err_str),
1649                          "\"cannot %s routing %s\"",
1650                          (enable) ? "enable" : "disable", strerror(errno));
1651                 goto out;
1652         }
1653
1654 out:
1655         cYAML_build_error(rc, seq_no,
1656                          (enable) ? ADD_CMD : DEL_CMD,
1657                          "routing", err_str, err_rc);
1658
1659         return rc;
1660 }
1661
1662 int lustre_lnet_config_numa_range(int range, int seq_no, struct cYAML **err_rc)
1663 {
1664         struct lnet_ioctl_numa_range data;
1665         int rc = LUSTRE_CFG_RC_NO_ERR;
1666         char err_str[LNET_MAX_STR_LEN];
1667
1668         snprintf(err_str, sizeof(err_str), "\"success\"");
1669
1670         if (range < 0) {
1671                 snprintf(err_str,
1672                          sizeof(err_str),
1673                          "\"range must be >= 0\"");
1674                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
1675                 goto out;
1676         }
1677
1678         LIBCFS_IOC_INIT_V2(data, nr_hdr);
1679         data.nr_range = range;
1680
1681         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_SET_NUMA_RANGE, &data);
1682         if (rc != 0) {
1683                 rc = -errno;
1684                 snprintf(err_str,
1685                          sizeof(err_str),
1686                          "\"cannot configure buffers: %s\"", strerror(errno));
1687                 goto out;
1688         }
1689
1690 out:
1691         cYAML_build_error(rc, seq_no, ADD_CMD, "numa_range", err_str, err_rc);
1692
1693         return rc;
1694 }
1695
1696 int lustre_lnet_config_buffers(int tiny, int small, int large, int seq_no,
1697                                struct cYAML **err_rc)
1698 {
1699         struct lnet_ioctl_config_data data;
1700         int rc = LUSTRE_CFG_RC_NO_ERR;
1701         char err_str[LNET_MAX_STR_LEN];
1702
1703         snprintf(err_str, sizeof(err_str), "\"success\"");
1704
1705         /* -1 indicates to ignore changes to this field */
1706         if (tiny < -1 || small < -1 || large < -1) {
1707                 snprintf(err_str,
1708                          sizeof(err_str),
1709                          "\"tiny, small and large must be >= 0\"");
1710                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
1711                 goto out;
1712         }
1713
1714         LIBCFS_IOC_INIT_V2(data, cfg_hdr);
1715         data.cfg_config_u.cfg_buffers.buf_tiny = tiny;
1716         data.cfg_config_u.cfg_buffers.buf_small = small;
1717         data.cfg_config_u.cfg_buffers.buf_large = large;
1718
1719         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_ADD_BUF, &data);
1720         if (rc != 0) {
1721                 rc = -errno;
1722                 snprintf(err_str,
1723                          sizeof(err_str),
1724                          "\"cannot configure buffers: %s\"", strerror(errno));
1725                 goto out;
1726         }
1727
1728 out:
1729         cYAML_build_error(rc, seq_no, ADD_CMD, "buf", err_str, err_rc);
1730
1731         return rc;
1732 }
1733
1734 int lustre_lnet_show_routing(int seq_no, struct cYAML **show_rc,
1735                              struct cYAML **err_rc)
1736 {
1737         struct lnet_ioctl_config_data *data;
1738         struct lnet_ioctl_pool_cfg *pool_cfg = NULL;
1739         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
1740         int l_errno = 0;
1741         char *buf;
1742         char *pools[LNET_NRBPOOLS] = {"tiny", "small", "large"};
1743         int buf_count[LNET_NRBPOOLS] = {0};
1744         struct cYAML *root = NULL, *pools_node = NULL,
1745                      *type_node = NULL, *item = NULL, *cpt = NULL,
1746                      *first_seq = NULL, *buffers = NULL;
1747         int i, j;
1748         char err_str[LNET_MAX_STR_LEN];
1749         char node_name[LNET_MAX_STR_LEN];
1750         bool exist = false;
1751
1752         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
1753
1754         buf = calloc(1, sizeof(*data) + sizeof(*pool_cfg));
1755         if (buf == NULL)
1756                 goto out;
1757
1758         data = (struct lnet_ioctl_config_data *)buf;
1759
1760         root = cYAML_create_object(NULL, NULL);
1761         if (root == NULL)
1762                 goto out;
1763
1764         pools_node = cYAML_create_seq(root, "routing");
1765         if (pools_node == NULL)
1766                 goto out;
1767
1768         for (i = 0;; i++) {
1769                 LIBCFS_IOC_INIT_V2(*data, cfg_hdr);
1770                 data->cfg_hdr.ioc_len = sizeof(struct lnet_ioctl_config_data) +
1771                                         sizeof(struct lnet_ioctl_pool_cfg);
1772                 data->cfg_count = i;
1773
1774                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_BUF, data);
1775                 if (rc != 0) {
1776                         l_errno = errno;
1777                         break;
1778                 }
1779
1780                 exist = true;
1781
1782                 pool_cfg = (struct lnet_ioctl_pool_cfg *)data->cfg_bulk;
1783
1784                 snprintf(node_name, sizeof(node_name), "cpt[%d]", i);
1785                 item = cYAML_create_seq_item(pools_node);
1786                 if (item == NULL)
1787                         goto out;
1788
1789                 if (first_seq == NULL)
1790                         first_seq = item;
1791
1792                 cpt = cYAML_create_object(item, node_name);
1793                 if (cpt == NULL)
1794                         goto out;
1795
1796                 /* create the tree  and print */
1797                 for (j = 0; j < LNET_NRBPOOLS; j++) {
1798                         type_node = cYAML_create_object(cpt, pools[j]);
1799                         if (type_node == NULL)
1800                                 goto out;
1801                         if (cYAML_create_number(type_node, "npages",
1802                                                 pool_cfg->pl_pools[j].pl_npages)
1803                             == NULL)
1804                                 goto out;
1805                         if (cYAML_create_number(type_node, "nbuffers",
1806                                                 pool_cfg->pl_pools[j].
1807                                                   pl_nbuffers) == NULL)
1808                                 goto out;
1809                         if (cYAML_create_number(type_node, "credits",
1810                                                 pool_cfg->pl_pools[j].
1811                                                    pl_credits) == NULL)
1812                                 goto out;
1813                         if (cYAML_create_number(type_node, "mincredits",
1814                                                 pool_cfg->pl_pools[j].
1815                                                    pl_mincredits) == NULL)
1816                                 goto out;
1817                         /* keep track of the total count for each of the
1818                          * tiny, small and large buffers */
1819                         buf_count[j] += pool_cfg->pl_pools[j].pl_nbuffers;
1820                 }
1821         }
1822
1823         if (pool_cfg != NULL) {
1824                 item = cYAML_create_seq_item(pools_node);
1825                 if (item == NULL)
1826                         goto out;
1827
1828                 if (cYAML_create_number(item, "enable", pool_cfg->pl_routing) ==
1829                     NULL)
1830                         goto out;
1831         }
1832
1833         /* create a buffers entry in the show. This is necessary so that
1834          * if the YAML output is used to configure a node, the buffer
1835          * configuration takes hold */
1836         buffers = cYAML_create_object(root, "buffers");
1837         if (buffers == NULL)
1838                 goto out;
1839
1840         for (i = 0; i < LNET_NRBPOOLS; i++) {
1841                 if (cYAML_create_number(buffers, pools[i], buf_count[i]) == NULL)
1842                         goto out;
1843         }
1844
1845         if (show_rc == NULL)
1846                 cYAML_print_tree(root);
1847
1848         if (l_errno != ENOENT) {
1849                 snprintf(err_str,
1850                          sizeof(err_str),
1851                          "\"cannot get routing information: %s\"",
1852                          strerror(l_errno));
1853                 rc = -l_errno;
1854                 goto out;
1855         } else
1856                 rc = LUSTRE_CFG_RC_NO_ERR;
1857
1858         snprintf(err_str, sizeof(err_str), "\"success\"");
1859         rc = LUSTRE_CFG_RC_NO_ERR;
1860
1861 out:
1862         free(buf);
1863         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR || !exist) {
1864                 cYAML_free_tree(root);
1865         } else if (show_rc != NULL && *show_rc != NULL) {
1866                 struct cYAML *routing_node;
1867                 /* there should exist only one routing block and one
1868                  * buffers block. If there already exists a previous one
1869                  * then don't add another */
1870                 routing_node = cYAML_get_object_item(*show_rc, "routing");
1871                 if (routing_node == NULL) {
1872                         cYAML_insert_sibling((*show_rc)->cy_child,
1873                                                 root->cy_child);
1874                         free(root);
1875                 } else {
1876                         cYAML_free_tree(root);
1877                 }
1878         } else {
1879                 *show_rc = root;
1880         }
1881
1882         cYAML_build_error(rc, seq_no, SHOW_CMD, "routing", err_str, err_rc);
1883
1884         return rc;
1885 }
1886
1887 int lustre_lnet_show_peer(char *knid, int seq_no, struct cYAML **show_rc,
1888                           struct cYAML **err_rc)
1889 {
1890         struct lnet_ioctl_peer_cfg *peer_info;
1891         struct lnet_peer_ni_credit_info *lpni_cri;
1892         int rc = LUSTRE_CFG_RC_OUT_OF_MEM, ncpt = 0, i = 0, j = 0;
1893         int l_errno = 0;
1894         struct cYAML *root = NULL, *peer = NULL, *peer_ni = NULL,
1895                      *first_seq = NULL, *peer_root = NULL, *tmp = NULL;
1896         char err_str[LNET_MAX_STR_LEN];
1897         lnet_nid_t prev_primary_nid = LNET_NID_ANY, primary_nid = LNET_NID_ANY;
1898         char *data = calloc(sizeof(*peer_info) + sizeof(*lpni_cri), 1);
1899         bool new_peer = true;
1900
1901         snprintf(err_str, sizeof(err_str),
1902                  "\"out of memory\"");
1903
1904         if (data == NULL)
1905                 goto out;
1906
1907         peer_info = (struct lnet_ioctl_peer_cfg *)data;
1908
1909         /* create struct cYAML root object */
1910         root = cYAML_create_object(NULL, NULL);
1911         if (root == NULL)
1912                 goto out;
1913
1914         peer_root = cYAML_create_seq(root, "peer");
1915         if (peer_root == NULL)
1916                 goto out;
1917
1918         if (knid != NULL)
1919                 primary_nid = libcfs_str2nid(knid);
1920
1921         do {
1922                 for (i = 0;; i++) {
1923                         memset(data, 0, sizeof(*peer_info) + sizeof(*lpni_cri));
1924                         LIBCFS_IOC_INIT_V2(*peer_info, prcfg_hdr);
1925                         peer_info->prcfg_hdr.ioc_len = sizeof(*peer_info) +
1926                                                        sizeof(*lpni_cri);
1927                         peer_info->prcfg_idx = i;
1928
1929                         rc = l_ioctl(LNET_DEV_ID,
1930                                      IOC_LIBCFS_GET_PEER_NI, peer_info);
1931                         if (rc != 0) {
1932                                 l_errno = errno;
1933                                 break;
1934                         }
1935
1936                         if (primary_nid != LNET_NID_ANY &&
1937                             primary_nid != peer_info->prcfg_key_nid)
1938                                         continue;
1939
1940                         lpni_cri = (struct lnet_peer_ni_credit_info*)peer_info->prcfg_bulk;
1941
1942                         peer = cYAML_create_seq_item(peer_root);
1943                         if (peer == NULL)
1944                                 goto out;
1945
1946                         if (peer_info->prcfg_key_nid != prev_primary_nid) {
1947                                 prev_primary_nid = peer_info->prcfg_key_nid;
1948                                 new_peer = true;
1949                         }
1950
1951                         if (new_peer) {
1952                                 lnet_nid_t pnid = peer_info->prcfg_key_nid;
1953                                 if (cYAML_create_string(peer, "primary nid",
1954                                                         libcfs_nid2str(pnid))
1955                                     == NULL)
1956                                         goto out;
1957                                 tmp = cYAML_create_seq(peer, "peer ni");
1958                                 if (tmp == NULL)
1959                                         goto out;
1960                                 new_peer = false;
1961                         }
1962
1963                         if (first_seq == NULL)
1964                                 first_seq = peer;
1965
1966                         peer_ni = cYAML_create_seq_item(tmp);
1967                         if (peer_ni == NULL)
1968                                 goto out;
1969
1970                         if (cYAML_create_string(peer_ni, "nid",
1971                                                 libcfs_nid2str
1972                                                  (peer_info->prcfg_cfg_nid))
1973                             == NULL)
1974                                 goto out;
1975
1976                         if (cYAML_create_string(peer_ni, "state",
1977                                                 lpni_cri->cr_aliveness)
1978                             == NULL)
1979                                 goto out;
1980
1981                         if (cYAML_create_number(peer_ni, "refcount",
1982                                                 lpni_cri->cr_refcount) == NULL)
1983                                 goto out;
1984
1985                         if (cYAML_create_number(peer_ni, "max_ni_tx_credits",
1986                                                 lpni_cri->cr_ni_peer_tx_credits)
1987                             == NULL)
1988                                 goto out;
1989
1990                         if (cYAML_create_number(peer_ni, "available_tx_credits",
1991                                                 lpni_cri->cr_peer_tx_credits)
1992                             == NULL)
1993                                 goto out;
1994
1995                         if (cYAML_create_number(peer_ni, "available_rtr_credits",
1996                                                 lpni_cri->cr_peer_rtr_credits)
1997                             == NULL)
1998                                 goto out;
1999
2000                         if (cYAML_create_number(peer_ni, "min_rtr_credits",
2001                                                 lpni_cri->cr_peer_min_rtr_credits)
2002                             == NULL)
2003                                 goto out;
2004
2005                         if (cYAML_create_number(peer_ni, "tx_q_num_of_buf",
2006                                                 lpni_cri->cr_peer_tx_qnob)
2007                             == NULL)
2008                                 goto out;
2009                 }
2010
2011                 if (l_errno != ENOENT) {
2012                         snprintf(err_str,
2013                                 sizeof(err_str),
2014                                 "\"cannot get peer information: %s\"",
2015                                 strerror(l_errno));
2016                         rc = -l_errno;
2017                         goto out;
2018                 }
2019
2020                 j++;
2021         } while (j < ncpt);
2022
2023         /* print output iff show_rc is not provided */
2024         if (show_rc == NULL)
2025                 cYAML_print_tree(root);
2026
2027         snprintf(err_str, sizeof(err_str), "\"success\"");
2028         rc = LUSTRE_CFG_RC_NO_ERR;
2029
2030 out:
2031         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR) {
2032                 cYAML_free_tree(root);
2033         } else if (show_rc != NULL && *show_rc != NULL) {
2034                 struct cYAML *show_node;
2035                 /* find the peer node, if one doesn't exist then
2036                  * insert one.  Otherwise add to the one there
2037                  */
2038                 show_node = cYAML_get_object_item(*show_rc,
2039                                                   "peer");
2040                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
2041                         cYAML_insert_child(show_node, first_seq);
2042                         free(peer_root);
2043                         free(root);
2044                 } else if (show_node == NULL) {
2045                         cYAML_insert_sibling((*show_rc)->cy_child,
2046                                              peer_root);
2047                         free(root);
2048                 } else {
2049                         cYAML_free_tree(root);
2050                 }
2051         } else {
2052                 *show_rc = root;
2053         }
2054
2055         cYAML_build_error(rc, seq_no, SHOW_CMD, "peer", err_str,
2056                           err_rc);
2057
2058         return rc;
2059 }
2060
2061 int lustre_lnet_show_numa_range(int seq_no, struct cYAML **show_rc,
2062                                 struct cYAML **err_rc)
2063 {
2064         struct lnet_ioctl_numa_range data;
2065         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
2066         int l_errno;
2067         char err_str[LNET_MAX_STR_LEN];
2068         struct cYAML *root = NULL, *range = NULL;
2069
2070         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
2071
2072         LIBCFS_IOC_INIT_V2(data, nr_hdr);
2073
2074         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_NUMA_RANGE, &data);
2075         if (rc != 0) {
2076                 l_errno = errno;
2077                 snprintf(err_str,
2078                          sizeof(err_str),
2079                          "\"cannot get numa range: %s\"",
2080                          strerror(l_errno));
2081                 rc = -l_errno;
2082                 goto out;
2083         }
2084
2085         root = cYAML_create_object(NULL, NULL);
2086         if (root == NULL)
2087                 goto out;
2088
2089         range = cYAML_create_object(root, "numa");
2090         if (range == NULL)
2091                 goto out;
2092
2093         if (cYAML_create_number(range, "range",
2094                                 data.nr_range) == NULL)
2095                 goto out;
2096
2097         if (show_rc == NULL)
2098                 cYAML_print_tree(root);
2099
2100         snprintf(err_str, sizeof(err_str), "\"success\"");
2101 out:
2102         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR) {
2103                 cYAML_free_tree(root);
2104         } else if (show_rc != NULL && *show_rc != NULL) {
2105                 cYAML_insert_sibling((*show_rc)->cy_child,
2106                                         root->cy_child);
2107                 free(root);
2108         } else {
2109                 *show_rc = root;
2110         }
2111
2112         cYAML_build_error(rc, seq_no, SHOW_CMD, "numa", err_str, err_rc);
2113
2114         return rc;
2115 }
2116
2117 int lustre_lnet_show_stats(int seq_no, struct cYAML **show_rc,
2118                            struct cYAML **err_rc)
2119 {
2120         struct lnet_ioctl_lnet_stats data;
2121         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
2122         int l_errno;
2123         char err_str[LNET_MAX_STR_LEN];
2124         struct cYAML *root = NULL, *stats = NULL;
2125
2126         snprintf(err_str, sizeof(err_str), "\"out of memory\"");
2127
2128         LIBCFS_IOC_INIT_V2(data, st_hdr);
2129
2130         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_LNET_STATS, &data);
2131         if (rc != 0) {
2132                 l_errno = errno;
2133                 snprintf(err_str,
2134                          sizeof(err_str),
2135                          "\"cannot get lnet statistics: %s\"",
2136                          strerror(l_errno));
2137                 rc = -l_errno;
2138                 goto out;
2139         }
2140
2141         root = cYAML_create_object(NULL, NULL);
2142         if (root == NULL)
2143                 goto out;
2144
2145         stats = cYAML_create_object(root, "statistics");
2146         if (stats == NULL)
2147                 goto out;
2148
2149         if (cYAML_create_number(stats, "msgs_alloc",
2150                                 data.st_cntrs.msgs_alloc) == NULL)
2151                 goto out;
2152
2153         if (cYAML_create_number(stats, "msgs_max",
2154                                 data.st_cntrs.msgs_max) == NULL)
2155                 goto out;
2156
2157         if (cYAML_create_number(stats, "errors",
2158                                 data.st_cntrs.errors) == NULL)
2159                 goto out;
2160
2161         if (cYAML_create_number(stats, "send_count",
2162                                 data.st_cntrs.send_count) == NULL)
2163                 goto out;
2164
2165         if (cYAML_create_number(stats, "recv_count",
2166                                 data.st_cntrs.recv_count) == NULL)
2167                 goto out;
2168
2169         if (cYAML_create_number(stats, "route_count",
2170                                 data.st_cntrs.route_count) == NULL)
2171                 goto out;
2172
2173         if (cYAML_create_number(stats, "drop_count",
2174                                 data.st_cntrs.drop_count) == NULL)
2175                 goto out;
2176
2177         if (cYAML_create_number(stats, "send_length",
2178                                 data.st_cntrs.send_length) == NULL)
2179                 goto out;
2180
2181         if (cYAML_create_number(stats, "recv_length",
2182                                 data.st_cntrs.recv_length) == NULL)
2183                 goto out;
2184
2185         if (cYAML_create_number(stats, "route_length",
2186                                 data.st_cntrs.route_length) == NULL)
2187                 goto out;
2188
2189         if (cYAML_create_number(stats, "drop_length",
2190                                 data.st_cntrs.drop_length) == NULL)
2191                 goto out;
2192
2193         if (show_rc == NULL)
2194                 cYAML_print_tree(root);
2195
2196         snprintf(err_str, sizeof(err_str), "\"success\"");
2197 out:
2198         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR) {
2199                 cYAML_free_tree(root);
2200         } else if (show_rc != NULL && *show_rc != NULL) {
2201                 cYAML_insert_sibling((*show_rc)->cy_child,
2202                                         root->cy_child);
2203                 free(root);
2204         } else {
2205                 *show_rc = root;
2206         }
2207
2208         cYAML_build_error(rc, seq_no, SHOW_CMD, "statistics", err_str, err_rc);
2209
2210         return rc;
2211 }
2212
2213 typedef int (*cmd_handler_t)(struct cYAML *tree,
2214                              struct cYAML **show_rc,
2215                              struct cYAML **err_rc);
2216
2217 static int handle_yaml_config_route(struct cYAML *tree, struct cYAML **show_rc,
2218                                     struct cYAML **err_rc)
2219 {
2220         struct cYAML *net, *gw, *hop, *prio, *seq_no;
2221
2222         net = cYAML_get_object_item(tree, "net");
2223         gw = cYAML_get_object_item(tree, "gateway");
2224         hop = cYAML_get_object_item(tree, "hop");
2225         prio = cYAML_get_object_item(tree, "priority");
2226         seq_no = cYAML_get_object_item(tree, "seq_no");
2227
2228         return lustre_lnet_config_route((net) ? net->cy_valuestring : NULL,
2229                                         (gw) ? gw->cy_valuestring : NULL,
2230                                         (hop) ? hop->cy_valueint : -1,
2231                                         (prio) ? prio->cy_valueint : -1,
2232                                         (seq_no) ? seq_no->cy_valueint : -1,
2233                                         err_rc);
2234 }
2235
2236 static void yaml_free_string_array(char **array, int num)
2237 {
2238         int i;
2239         char **sub_array = array;
2240
2241         for (i = 0; i < num; i++) {
2242                 if (*sub_array != NULL)
2243                         free(sub_array);
2244                 sub_array++;
2245         }
2246         free(array);
2247 }
2248
2249 /*
2250  *    interfaces:
2251  *        0: <intf_name>['['<expr>']']
2252  *        1: <intf_name>['['<expr>']']
2253  */
2254 static int yaml_copy_intf_info(struct cYAML *intf_tree,
2255                                struct lnet_dlc_network_descr *nw_descr)
2256 {
2257         struct cYAML *child = NULL;
2258         int intf_num = 0, rc = LUSTRE_CFG_RC_NO_ERR;
2259         struct lnet_dlc_intf_descr *intf_descr, *tmp;
2260
2261         if (intf_tree == NULL || nw_descr == NULL)
2262                 return LUSTRE_CFG_RC_BAD_PARAM;
2263
2264         /* now grab all the interfaces and their cpts */
2265         child = intf_tree->cy_child;
2266         while (child != NULL) {
2267                 if (child->cy_valuestring == NULL) {
2268                         child = child->cy_next;
2269                         continue;
2270                 }
2271
2272                 if (strlen(child->cy_valuestring) >= LNET_MAX_STR_LEN)
2273                         goto failed;
2274
2275                 rc = lustre_lnet_add_intf_descr(&nw_descr->nw_intflist,
2276                                                 child->cy_valuestring,
2277                                                 strlen(child->cy_valuestring));
2278                 if (rc != LUSTRE_CFG_RC_NO_ERR)
2279                         goto failed;
2280
2281                 intf_num++;
2282                 child = child->cy_next;
2283         }
2284
2285         if (intf_num == 0)
2286                 return LUSTRE_CFG_RC_MISSING_PARAM;
2287
2288         return intf_num;
2289
2290 failed:
2291         list_for_each_entry_safe(intf_descr, tmp, &nw_descr->nw_intflist,
2292                                  intf_on_network) {
2293                 if (intf_descr->cpt_expr != NULL)
2294                         cfs_expr_list_free(intf_descr->cpt_expr);
2295                 free(intf_descr);
2296         }
2297
2298         return rc;
2299 }
2300
2301 static bool
2302 yaml_extract_cmn_tunables(struct cYAML *tree,
2303                           struct lnet_ioctl_config_lnd_cmn_tunables *tunables,
2304                           int *num_global_cpts,
2305                           struct cfs_expr_list **global_cpts)
2306 {
2307         struct cYAML *tun, *item, *smp;
2308
2309         tun = cYAML_get_object_item(tree, "tunables");
2310         if (tun != NULL) {
2311                 item = cYAML_get_object_item(tun, "peer_timeout");
2312                 if (item != NULL)
2313                         tunables->lct_peer_timeout = item->cy_valueint;
2314                 item = cYAML_get_object_item(tun, "peer_credits");
2315                 if (item != NULL)
2316                         tunables->lct_peer_tx_credits = item->cy_valueint;
2317                 item = cYAML_get_object_item(tun, "peer_buffer_credits");
2318                 if (item != NULL)
2319                         tunables->lct_peer_rtr_credits = item->cy_valueint;
2320                 item = cYAML_get_object_item(tun, "credits");
2321                 if (item != NULL)
2322                         tunables->lct_max_tx_credits = item->cy_valueint;
2323                 smp = cYAML_get_object_item(tun, "CPT");
2324                 if (smp != NULL) {
2325                         *num_global_cpts =
2326                                 cfs_expr_list_parse(smp->cy_valuestring,
2327                                                  strlen(smp->cy_valuestring),
2328                                                  0, UINT_MAX, global_cpts);
2329                 }
2330
2331                 return true;
2332         }
2333
2334         return false;
2335 }
2336
2337 static bool
2338 yaml_extract_tunables(struct cYAML *tree,
2339                       struct lnet_ioctl_config_lnd_tunables *tunables,
2340                       int *num_global_cpts,
2341                       struct cfs_expr_list **global_cpts,
2342                       __u32 net_type)
2343 {
2344         bool rc;
2345
2346         rc = yaml_extract_cmn_tunables(tree, &tunables->lt_cmn,
2347                                        num_global_cpts, global_cpts);
2348
2349         if (!rc)
2350                 return rc;
2351
2352         lustre_yaml_extract_lnd_tunables(tree, net_type,
2353                                          &tunables->lt_tun);
2354
2355         return rc;
2356 }
2357
2358 /*
2359  * net:
2360  *    - net type: <net>[<NUM>]
2361   *      local NI(s):
2362  *        - nid: <ip>@<net>[<NUM>]
2363  *          status: up
2364  *          interfaces:
2365  *               0: <intf_name>['['<expr>']']
2366  *               1: <intf_name>['['<expr>']']
2367  *        tunables:
2368  *               peer_timeout: <NUM>
2369  *               peer_credits: <NUM>
2370  *               peer_buffer_credits: <NUM>
2371  *               credits: <NUM>
2372 *         lnd tunables:
2373  *               peercredits_hiw: <NUM>
2374  *               map_on_demand: <NUM>
2375  *               concurrent_sends: <NUM>
2376  *               fmr_pool_size: <NUM>
2377  *               fmr_flush_trigger: <NUM>
2378  *               fmr_cache: <NUM>
2379  *
2380  * At least one interface is required. If no interfaces are provided the
2381  * network interface can not be configured.
2382  */
2383 static int handle_yaml_config_ni(struct cYAML *tree, struct cYAML **show_rc,
2384                                  struct cYAML **err_rc)
2385 {
2386         struct cYAML *net, *intf, *seq_no, *ip2net = NULL, *local_nis = NULL,
2387                      *item = NULL;
2388         int num_entries = 0, num_global_cpts = 0, rc;
2389         struct lnet_dlc_network_descr nw_descr;
2390         struct cfs_expr_list *global_cpts = NULL;
2391         struct lnet_ioctl_config_lnd_tunables tunables;
2392         bool found = false;
2393
2394         memset(&tunables, 0, sizeof(tunables));
2395
2396         INIT_LIST_HEAD(&nw_descr.network_on_rule);
2397         INIT_LIST_HEAD(&nw_descr.nw_intflist);
2398
2399         ip2net = cYAML_get_object_item(tree, "ip2net");
2400         net = cYAML_get_object_item(tree, "net type");
2401         if (net)
2402                 nw_descr.nw_id = libcfs_str2net(net->cy_valuestring);
2403
2404         /*
2405          * if neither net nor ip2nets are present, then we can not
2406          * configure the network.
2407          */
2408         if (!net && !ip2net)
2409                 return LUSTRE_CFG_RC_MISSING_PARAM;
2410
2411         local_nis = cYAML_get_object_item(tree, "local NI(s)");
2412         if (local_nis == NULL)
2413                 return LUSTRE_CFG_RC_MISSING_PARAM;
2414
2415         if (!cYAML_is_sequence(local_nis))
2416                 return LUSTRE_CFG_RC_BAD_PARAM;
2417
2418         while (cYAML_get_next_seq_item(local_nis, &item) != NULL) {
2419                 intf = cYAML_get_object_item(item, "interfaces");
2420                 if (intf == NULL)
2421                         continue;
2422                 num_entries = yaml_copy_intf_info(intf, &nw_descr);
2423                 if (num_entries <= 0) {
2424                         cYAML_build_error(num_entries, -1, "ni", "add",
2425                                         "bad interface list",
2426                                         err_rc);
2427                         return LUSTRE_CFG_RC_BAD_PARAM;
2428                 }
2429         }
2430
2431         found = yaml_extract_tunables(tree, &tunables, &num_global_cpts,
2432                                       &global_cpts,
2433                                       LNET_NETTYP(nw_descr.nw_id));
2434         seq_no = cYAML_get_object_item(tree, "seq_no");
2435
2436         rc = lustre_lnet_config_ni(&nw_descr,
2437                                    (num_global_cpts > 0) ? global_cpts: NULL,
2438                                    (ip2net) ? ip2net->cy_valuestring : NULL,
2439                                    (found) ? &tunables: NULL,
2440                                    (seq_no) ? seq_no->cy_valueint : -1,
2441                                    err_rc);
2442
2443         if (global_cpts != NULL)
2444                 cfs_expr_list_free(global_cpts);
2445
2446         return rc;
2447 }
2448
2449 /*
2450  * ip2nets:
2451  *  - net-spec: <tcp|o2ib|gni>[NUM]
2452  *    interfaces:
2453  *        0: <intf name>['['<expr>']']
2454  *        1: <intf name>['['<expr>']']
2455  *    ip-range:
2456  *        0: <expr.expr.expr.expr>
2457  *        1: <expr.expr.expr.expr>
2458  */
2459 static int handle_yaml_config_ip2nets(struct cYAML *tree,
2460                                       struct cYAML **show_rc,
2461                                       struct cYAML **err_rc)
2462 {
2463         struct cYAML *net, *ip_range, *item = NULL, *intf = NULL,
2464                      *seq_no = NULL;
2465         struct lustre_lnet_ip2nets ip2nets;
2466         struct lustre_lnet_ip_range_descr *ip_range_descr = NULL,
2467                                           *tmp = NULL;
2468         int rc = LUSTRE_CFG_RC_NO_ERR, num_global_cpts = 0;
2469         struct cfs_expr_list *global_cpts = NULL;
2470         struct cfs_expr_list *el, *el_tmp;
2471         struct lnet_ioctl_config_lnd_tunables tunables;
2472         struct lnet_dlc_intf_descr *intf_descr, *intf_tmp;
2473         bool found = false;
2474
2475         memset(&tunables, 0, sizeof(tunables));
2476
2477         /* initialize all lists */
2478         INIT_LIST_HEAD(&ip2nets.ip2nets_ip_ranges);
2479         INIT_LIST_HEAD(&ip2nets.ip2nets_net.network_on_rule);
2480         INIT_LIST_HEAD(&ip2nets.ip2nets_net.nw_intflist);
2481
2482         net = cYAML_get_object_item(tree, "net-spec");
2483         if (net == NULL)
2484                 return LUSTRE_CFG_RC_BAD_PARAM;
2485
2486         if (net != NULL && net->cy_valuestring == NULL)
2487                 return LUSTRE_CFG_RC_BAD_PARAM;
2488
2489         /* assign the network id */
2490         ip2nets.ip2nets_net.nw_id = libcfs_str2net(net->cy_valuestring);
2491         if (ip2nets.ip2nets_net.nw_id == LNET_NID_ANY)
2492                 return LUSTRE_CFG_RC_BAD_PARAM;
2493
2494         seq_no = cYAML_get_object_item(tree, "seq_no");
2495
2496         intf = cYAML_get_object_item(tree, "interfaces");
2497         if (intf != NULL) {
2498                 rc = yaml_copy_intf_info(intf, &ip2nets.ip2nets_net);
2499                 if (rc <= 0)
2500                         return LUSTRE_CFG_RC_BAD_PARAM;
2501         }
2502
2503         ip_range = cYAML_get_object_item(tree, "ip-range");
2504         if (ip_range != NULL) {
2505                 item = ip_range->cy_child;
2506                 while (item != NULL) {
2507                         if (item->cy_valuestring == NULL) {
2508                                 item = item->cy_next;
2509                                 continue;
2510                         }
2511
2512                         rc = lustre_lnet_add_ip_range(&ip2nets.ip2nets_ip_ranges,
2513                                                       item->cy_valuestring);
2514
2515                         if (rc != LUSTRE_CFG_RC_NO_ERR)
2516                                 goto out;
2517
2518                         item = item->cy_next;
2519                 }
2520         }
2521
2522         found = yaml_extract_tunables(tree, &tunables, &num_global_cpts,
2523                                       &global_cpts,
2524                                       LNET_NETTYP(ip2nets.ip2nets_net.nw_id));
2525
2526         rc = lustre_lnet_config_ip2nets(&ip2nets,
2527                         (found) ? &tunables : NULL,
2528                         (num_global_cpts > 0) ? global_cpts : NULL,
2529                         (seq_no) ? seq_no->cy_valueint : -1,
2530                         err_rc);
2531
2532         /*
2533          * don't stop because there was no match. Continue processing the
2534          * rest of the rules. If non-match then nothing is configured
2535          */
2536         if (rc == LUSTRE_CFG_RC_NO_MATCH)
2537                 rc = LUSTRE_CFG_RC_NO_ERR;
2538 out:
2539         list_for_each_entry_safe(intf_descr, intf_tmp,
2540                                  &ip2nets.ip2nets_net.nw_intflist,
2541                                  intf_on_network) {
2542                 if (intf_descr->cpt_expr != NULL)
2543                         cfs_expr_list_free(intf_descr->cpt_expr);
2544                 free(intf_descr);
2545         }
2546
2547         list_for_each_entry_safe(ip_range_descr, tmp,
2548                                  &ip2nets.ip2nets_ip_ranges,
2549                                  ipr_entry) {
2550                 list_for_each_entry_safe(el, el_tmp, &ip_range_descr->ipr_expr,
2551                                          el_link)
2552                         cfs_expr_list_free(el);
2553                 free(ip_range_descr);
2554         }
2555
2556         return rc;
2557 }
2558
2559 static int handle_yaml_del_ni(struct cYAML *tree, struct cYAML **show_rc,
2560                               struct cYAML **err_rc)
2561 {
2562         struct cYAML *net = NULL, *intf = NULL, *seq_no = NULL, *item = NULL,
2563                      *local_nis = NULL;
2564         int num_entries, rc;
2565         struct lnet_dlc_network_descr nw_descr;
2566
2567         INIT_LIST_HEAD(&nw_descr.network_on_rule);
2568         INIT_LIST_HEAD(&nw_descr.nw_intflist);
2569
2570         net = cYAML_get_object_item(tree, "net type");
2571         if (net != NULL)
2572                 nw_descr.nw_id = libcfs_str2net(net->cy_valuestring);
2573
2574         local_nis = cYAML_get_object_item(tree, "local NI(s)");
2575         if (local_nis == NULL)
2576                 return LUSTRE_CFG_RC_MISSING_PARAM;
2577
2578         if (!cYAML_is_sequence(local_nis))
2579                 return LUSTRE_CFG_RC_BAD_PARAM;
2580
2581         while (cYAML_get_next_seq_item(local_nis, &item) != NULL) {
2582                 intf = cYAML_get_object_item(item, "interfaces");
2583                 if (intf == NULL)
2584                         continue;
2585                 num_entries = yaml_copy_intf_info(intf, &nw_descr);
2586                 if (num_entries <= 0) {
2587                         cYAML_build_error(num_entries, -1, "ni", "add",
2588                                         "bad interface list",
2589                                         err_rc);
2590                         return LUSTRE_CFG_RC_BAD_PARAM;
2591                 }
2592         }
2593
2594         seq_no = cYAML_get_object_item(tree, "seq_no");
2595
2596         rc = lustre_lnet_del_ni((net) ? &nw_descr : NULL,
2597                                 (seq_no) ? seq_no->cy_valueint : -1,
2598                                 err_rc);
2599
2600         return rc;
2601 }
2602
2603 static int yaml_copy_peer_nids(struct cYAML *tree, char ***nidsppp)
2604 {
2605         struct cYAML *nids_entry = NULL, *child;
2606         char **nids = NULL;
2607         int num = 0, rc = LUSTRE_CFG_RC_NO_ERR;
2608
2609         nids_entry = cYAML_get_object_item(tree, "nids");
2610         if (nids_entry != NULL) {
2611                 /* count */
2612                 child = nids_entry->cy_child;
2613                 while (child != NULL) {
2614                         num++;
2615                         child = child->cy_next;
2616                 }
2617
2618                 if (num == 0)
2619                         return LUSTRE_CFG_RC_MISSING_PARAM;
2620
2621                 nids = calloc(sizeof(*nids) * num, 1);
2622                 if (nids == NULL)
2623                         return LUSTRE_CFG_RC_OUT_OF_MEM;
2624
2625                 /* now grab all the nids */
2626                 child = nids_entry->cy_child;
2627                 num = 0;
2628                 while (child != NULL) {
2629                         nids[num] = calloc(strlen(child->cy_valuestring) + 1,
2630                                            1);
2631                         if (nids[num] == NULL) {
2632                                 rc = LUSTRE_CFG_RC_OUT_OF_MEM;
2633                                 goto failed;
2634                         }
2635                         strncpy(nids[num], child->cy_valuestring,
2636                                 strlen(child->cy_valuestring));
2637                         child = child->cy_next;
2638                         num++;
2639                 }
2640                 rc = num;
2641         } else {
2642                 rc = LUSTRE_CFG_RC_MISSING_PARAM;
2643                 goto failed;
2644         }
2645
2646         *nidsppp = nids;
2647         return rc;
2648
2649 failed:
2650         if (nids != NULL)
2651                 yaml_free_string_array(nids, num);
2652         *nidsppp = NULL;
2653         return rc;
2654 }
2655
2656 static int handle_yaml_config_peer(struct cYAML *tree, struct cYAML **show_rc,
2657                                    struct cYAML **err_rc)
2658 {
2659         char **nids = NULL;
2660         int num, rc;
2661         struct cYAML *seq_no, *key_nid, *non_mr;
2662
2663         num = yaml_copy_peer_nids(tree, &nids);
2664         if (num < 0)
2665                 return num;
2666
2667         seq_no = cYAML_get_object_item(tree, "seq_no");
2668         key_nid = cYAML_get_object_item(tree, "key_nid");
2669         non_mr = cYAML_get_object_item(tree, "non_mr");
2670
2671         rc = lustre_lnet_config_peer_nid((key_nid) ? key_nid->cy_valuestring : NULL,
2672                                          nids,
2673                                          (non_mr) ? false : true,
2674                                          (seq_no) ? seq_no->cy_valueint : -1,
2675                                          err_rc);
2676
2677         yaml_free_string_array(nids, num);
2678         return rc;
2679 }
2680
2681 static int handle_yaml_del_peer(struct cYAML *tree, struct cYAML **show_rc,
2682                                 struct cYAML **err_rc)
2683 {
2684         char **nids = NULL;
2685         int num, rc;
2686         struct cYAML *seq_no, *key_nid;
2687
2688         num = yaml_copy_peer_nids(tree, &nids);
2689         if (num < 0)
2690                 return num;
2691
2692         seq_no = cYAML_get_object_item(tree, "seq_no");
2693         key_nid = cYAML_get_object_item(tree, "key_nid");
2694
2695         rc = lustre_lnet_del_peer_nid((key_nid) ? key_nid->cy_valuestring : NULL,
2696                                       nids,
2697                                       (seq_no) ? seq_no->cy_valueint : -1,
2698                                       err_rc);
2699
2700         yaml_free_string_array(nids, num);
2701         return rc;
2702 }
2703
2704 static int handle_yaml_config_buffers(struct cYAML *tree,
2705                                       struct cYAML **show_rc,
2706                                       struct cYAML **err_rc)
2707 {
2708         int rc;
2709         struct cYAML *tiny, *small, *large, *seq_no;
2710
2711         tiny = cYAML_get_object_item(tree, "tiny");
2712         small = cYAML_get_object_item(tree, "small");
2713         large = cYAML_get_object_item(tree, "large");
2714         seq_no = cYAML_get_object_item(tree, "seq_no");
2715
2716         rc = lustre_lnet_config_buffers((tiny) ? tiny->cy_valueint : -1,
2717                                         (small) ? small->cy_valueint : -1,
2718                                         (large) ? large->cy_valueint : -1,
2719                                         (seq_no) ? seq_no->cy_valueint : -1,
2720                                         err_rc);
2721
2722         return rc;
2723 }
2724
2725 static int handle_yaml_config_routing(struct cYAML *tree,
2726                                       struct cYAML **show_rc,
2727                                       struct cYAML **err_rc)
2728 {
2729         int rc = LUSTRE_CFG_RC_NO_ERR;
2730         struct cYAML *seq_no, *enable;
2731
2732         seq_no = cYAML_get_object_item(tree, "seq_no");
2733         enable = cYAML_get_object_item(tree, "enable");
2734
2735         if (enable) {
2736                 rc = lustre_lnet_enable_routing(enable->cy_valueint,
2737                                                 (seq_no) ?
2738                                                     seq_no->cy_valueint : -1,
2739                                                 err_rc);
2740         }
2741
2742         return rc;
2743 }
2744
2745 static int handle_yaml_del_route(struct cYAML *tree, struct cYAML **show_rc,
2746                                  struct cYAML **err_rc)
2747 {
2748         struct cYAML *net;
2749         struct cYAML *gw;
2750         struct cYAML *seq_no;
2751
2752         net = cYAML_get_object_item(tree, "net");
2753         gw = cYAML_get_object_item(tree, "gateway");
2754         seq_no = cYAML_get_object_item(tree, "seq_no");
2755
2756         return lustre_lnet_del_route((net) ? net->cy_valuestring : NULL,
2757                                      (gw) ? gw->cy_valuestring : NULL,
2758                                      (seq_no) ? seq_no->cy_valueint : -1,
2759                                      err_rc);
2760 }
2761
2762 static int handle_yaml_del_routing(struct cYAML *tree, struct cYAML **show_rc,
2763                                    struct cYAML **err_rc)
2764 {
2765         struct cYAML *seq_no;
2766
2767         seq_no = cYAML_get_object_item(tree, "seq_no");
2768
2769         return lustre_lnet_enable_routing(0, (seq_no) ?
2770                                                 seq_no->cy_valueint : -1,
2771                                         err_rc);
2772 }
2773
2774 static int handle_yaml_show_route(struct cYAML *tree, struct cYAML **show_rc,
2775                                   struct cYAML **err_rc)
2776 {
2777         struct cYAML *net;
2778         struct cYAML *gw;
2779         struct cYAML *hop;
2780         struct cYAML *prio;
2781         struct cYAML *detail;
2782         struct cYAML *seq_no;
2783
2784         net = cYAML_get_object_item(tree, "net");
2785         gw = cYAML_get_object_item(tree, "gateway");
2786         hop = cYAML_get_object_item(tree, "hop");
2787         prio = cYAML_get_object_item(tree, "priority");
2788         detail = cYAML_get_object_item(tree, "detail");
2789         seq_no = cYAML_get_object_item(tree, "seq_no");
2790
2791         return lustre_lnet_show_route((net) ? net->cy_valuestring : NULL,
2792                                       (gw) ? gw->cy_valuestring : NULL,
2793                                       (hop) ? hop->cy_valueint : -1,
2794                                       (prio) ? prio->cy_valueint : -1,
2795                                       (detail) ? detail->cy_valueint : 0,
2796                                       (seq_no) ? seq_no->cy_valueint : -1,
2797                                       show_rc,
2798                                       err_rc);
2799 }
2800
2801 static int handle_yaml_show_net(struct cYAML *tree, struct cYAML **show_rc,
2802                                 struct cYAML **err_rc)
2803 {
2804         struct cYAML *net, *detail, *seq_no;
2805
2806         net = cYAML_get_object_item(tree, "net");
2807         detail = cYAML_get_object_item(tree, "detail");
2808         seq_no = cYAML_get_object_item(tree, "seq_no");
2809
2810         return lustre_lnet_show_net((net) ? net->cy_valuestring : NULL,
2811                                     (detail) ? detail->cy_valueint : 0,
2812                                     (seq_no) ? seq_no->cy_valueint : -1,
2813                                     show_rc,
2814                                     err_rc);
2815 }
2816
2817 static int handle_yaml_show_routing(struct cYAML *tree, struct cYAML **show_rc,
2818                                     struct cYAML **err_rc)
2819 {
2820         struct cYAML *seq_no;
2821
2822         seq_no = cYAML_get_object_item(tree, "seq_no");
2823
2824         return lustre_lnet_show_routing((seq_no) ? seq_no->cy_valueint : -1,
2825                                         show_rc, err_rc);
2826 }
2827
2828 static int handle_yaml_show_credits(struct cYAML *tree, struct cYAML **show_rc,
2829                                     struct cYAML **err_rc)
2830 {
2831         struct cYAML *seq_no, *key_nid;
2832
2833         seq_no = cYAML_get_object_item(tree, "seq_no");
2834         key_nid = cYAML_get_object_item(tree, "key_nid");
2835
2836         return lustre_lnet_show_peer((key_nid) ? key_nid->cy_valuestring : NULL,
2837                                      (seq_no) ? seq_no->cy_valueint : -1,
2838                                      show_rc, err_rc);
2839 }
2840
2841 static int handle_yaml_show_stats(struct cYAML *tree, struct cYAML **show_rc,
2842                                   struct cYAML **err_rc)
2843 {
2844         struct cYAML *seq_no;
2845
2846         seq_no = cYAML_get_object_item(tree, "seq_no");
2847
2848         return lustre_lnet_show_stats((seq_no) ? seq_no->cy_valueint : -1,
2849                                       show_rc, err_rc);
2850 }
2851
2852 struct lookup_cmd_hdlr_tbl {
2853         char *name;
2854         cmd_handler_t cb;
2855 };
2856
2857 static struct lookup_cmd_hdlr_tbl lookup_config_tbl[] = {
2858         {"route", handle_yaml_config_route},
2859         {"net", handle_yaml_config_ni},
2860         {"ip2nets", handle_yaml_config_ip2nets},
2861         {"peer", handle_yaml_config_peer},
2862         {"routing", handle_yaml_config_routing},
2863         {"buffers", handle_yaml_config_buffers},
2864         {NULL, NULL}
2865 };
2866
2867 static struct lookup_cmd_hdlr_tbl lookup_del_tbl[] = {
2868         {"route", handle_yaml_del_route},
2869         {"net", handle_yaml_del_ni},
2870         {"peer", handle_yaml_del_peer},
2871         {"routing", handle_yaml_del_routing},
2872         {NULL, NULL}
2873 };
2874
2875 static struct lookup_cmd_hdlr_tbl lookup_show_tbl[] = {
2876         {"route", handle_yaml_show_route},
2877         {"net", handle_yaml_show_net},
2878         {"buffers", handle_yaml_show_routing},
2879         {"routing", handle_yaml_show_routing},
2880         {"credits", handle_yaml_show_credits},
2881         {"statistics", handle_yaml_show_stats},
2882         {NULL, NULL}
2883 };
2884
2885 static cmd_handler_t lookup_fn(char *key,
2886                                struct lookup_cmd_hdlr_tbl *tbl)
2887 {
2888         int i;
2889         if (key == NULL)
2890                 return NULL;
2891
2892         for (i = 0; tbl[i].name != NULL; i++) {
2893                 if (strncmp(key, tbl[i].name, strlen(tbl[i].name)) == 0)
2894                         return tbl[i].cb;
2895         }
2896
2897         return NULL;
2898 }
2899
2900 static int lustre_yaml_cb_helper(char *f, struct lookup_cmd_hdlr_tbl *table,
2901                                  struct cYAML **show_rc, struct cYAML **err_rc)
2902 {
2903         struct cYAML *tree, *item = NULL, *head, *child;
2904         cmd_handler_t cb;
2905         char err_str[LNET_MAX_STR_LEN];
2906         int rc = LUSTRE_CFG_RC_NO_ERR, return_rc = LUSTRE_CFG_RC_NO_ERR;
2907
2908         tree = cYAML_build_tree(f, NULL, 0, err_rc, false);
2909         if (tree == NULL)
2910                 return LUSTRE_CFG_RC_BAD_PARAM;
2911
2912         child = tree->cy_child;
2913         while (child != NULL) {
2914                 cb = lookup_fn(child->cy_string, table);
2915                 if (cb == NULL) {
2916                         snprintf(err_str, sizeof(err_str),
2917                                 "\"call back for '%s' not found\"",
2918                                 child->cy_string);
2919                         cYAML_build_error(LUSTRE_CFG_RC_BAD_PARAM, -1,
2920                                         "yaml", "helper", err_str, err_rc);
2921                         goto out;
2922                 }
2923
2924                 if (cYAML_is_sequence(child)) {
2925                         while ((head = cYAML_get_next_seq_item(child, &item))
2926                                != NULL) {
2927                                 rc = cb(head, show_rc, err_rc);
2928                                 if (rc != LUSTRE_CFG_RC_NO_ERR)
2929                                         return_rc = rc;
2930                         }
2931                 } else {
2932                         rc = cb(child, show_rc, err_rc);
2933                         if (rc != LUSTRE_CFG_RC_NO_ERR)
2934                                 return_rc = rc;
2935                 }
2936                 item = NULL;
2937                 child = child->cy_next;
2938         }
2939
2940 out:
2941         cYAML_free_tree(tree);
2942
2943         return return_rc;
2944 }
2945
2946 int lustre_yaml_config(char *f, struct cYAML **err_rc)
2947 {
2948         return lustre_yaml_cb_helper(f, lookup_config_tbl,
2949                                      NULL, err_rc);
2950 }
2951
2952 int lustre_yaml_del(char *f, struct cYAML **err_rc)
2953 {
2954         return lustre_yaml_cb_helper(f, lookup_del_tbl,
2955                                      NULL, err_rc);
2956 }
2957
2958 int lustre_yaml_show(char *f, struct cYAML **show_rc, struct cYAML **err_rc)
2959 {
2960         return lustre_yaml_cb_helper(f, lookup_show_tbl,
2961                                      show_rc, err_rc);
2962 }
2963
2964 int lustre_lnet_send_dbg_task(enum lnet_dbg_task dbg_task,
2965                               struct lnet_dbg_task_info *dbg_info,
2966                               struct cYAML **show_rc,
2967                               struct cYAML **err_rc)
2968 {
2969         struct lnet_ioctl_dbg *dbg;
2970         struct lnet_dbg_task_info *info;
2971         int rc = LUSTRE_CFG_RC_NO_ERR;
2972         char err_str[LNET_MAX_STR_LEN];
2973
2974         snprintf(err_str, sizeof(err_str), "\"success\"");
2975
2976         dbg = calloc(1, sizeof(*dbg) + sizeof(*info));
2977         if (!dbg) {
2978                 snprintf(err_str, sizeof(err_str), "\"out of memory\"");
2979                 rc = LUSTRE_CFG_RC_OUT_OF_MEM;
2980                 goto out;
2981         }
2982
2983         info = (struct lnet_dbg_task_info *)dbg->dbg_bulk;
2984
2985         LIBCFS_IOC_INIT_V2(*dbg, dbg_hdr);
2986
2987         dbg->dbg_task = dbg_task;
2988         if (dbg_info)
2989                 memcpy(info, dbg_info, sizeof(*info));
2990
2991         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_DBG, dbg);
2992         if (rc != 0) {
2993                 rc = -errno;
2994                 snprintf(err_str,
2995                          sizeof(err_str),
2996                          "\"debug task failed %s\"", strerror(errno));
2997                 goto out;
2998         }
2999
3000 out:
3001         cYAML_build_error(rc, -1, DBG_CMD,
3002                          "debug", err_str, err_rc);
3003
3004         return rc;
3005 }
3006