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LU-13569 lnet: Add health ping stats
[fs/lustre-release.git] / lnet / utils / lnetconfig / liblnetconfig.c
1 /*
2  * LGPL HEADER START
3  *
4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU Lesser General Public License as
8  * published by the Free Software Foundation; either version 2.1 of the
9  * License, or (at your option) any later version.
10  *
11  * This library is distributed in the hope that it will be useful, but
12  * WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with this library. If not, see <http://www.gnu.org/licenses/>.
18  *
19  * LGPL HEADER END
20  *
21  * Copyright (c) 2014, 2017, Intel Corporation.
22  *
23  * Author:
24  *   Amir Shehata <amir.shehata@intel.com>
25  */
26
27 /*
28  * There are two APIs:
29  *  1. APIs that take the actual parameters expanded.  This is for other
30  *  entities that would like to link against the library and call the APIs
31  *  directly without having to form an intermediate representation.
32  *  2. APIs that take a YAML file and parses out the information there and
33  *  calls the APIs mentioned in 1
34  */
35
36 #include <errno.h>
37 #include <limits.h>
38 #include <byteswap.h>
39 #include <netdb.h>
40 #include <stdio.h>
41 #include <stdlib.h>
42 #include <string.h>
43 #include <unistd.h>
44 #include <sys/ioctl.h>
45 #include <net/if.h>
46 #include <libcfs/util/ioctl.h>
47 #include <linux/lnet/lnetctl.h>
48 #include "liblnd.h"
49 #include <sys/types.h>
50 #include <sys/stat.h>
51 #include <fcntl.h>
52 #include <ifaddrs.h>
53 #include <rdma/rdma_user_cm.h>
54 #include "liblnetconfig.h"
55 #include <glob.h>
56 #include <libcfs/util/param.h>
57
58 #ifndef HAVE_USRSPC_RDMA_PS_TCP
59 #define RDMA_PS_TCP 0x0106
60 #endif
61
62 const char *gmsg_stat_names[] = {"sent_stats", "received_stats",
63                                  "dropped_stats"};
64
65 /*
66  * lustre_lnet_ip_range_descr
67  *      Describes an IP range.
68  *      Each octect is an expression
69  */
70 struct lustre_lnet_ip_range_descr {
71         struct list_head ipr_entry;
72         struct list_head ipr_expr;
73 };
74
75 /*
76  * lustre_lnet_ip2nets
77  *      Describes an ip2nets rule. This can be on a list of rules.
78  */
79 struct lustre_lnet_ip2nets {
80         struct lnet_dlc_network_descr ip2nets_net;
81         struct list_head ip2nets_ip_ranges;
82 };
83
84 int open_sysfs_file(const char *path, const char *attr, const int mode)
85 {
86         int fd;
87         char filename[LNET_MAX_STR_LEN];
88
89         if (strlen(path) + strlen(attr) >= LNET_MAX_STR_LEN)
90                 return -1;
91
92         snprintf(filename, sizeof(filename), "%s%s",
93                  path, attr);
94
95         fd = open(filename, mode);
96
97         return fd;
98 }
99
100 static int read_sysfs_file(const char *path, const char *attr,
101                            void *val, const size_t size, const int nelem)
102 {
103         int fd;
104         int rc = LUSTRE_CFG_RC_GENERIC_ERR;
105
106         fd = open_sysfs_file(path, attr, O_RDONLY);
107         if (fd == -1)
108                 return LUSTRE_CFG_RC_NO_MATCH;
109
110         if (read(fd, val, size * nelem) == -1)
111                 goto close_fd;
112
113         rc = LUSTRE_CFG_RC_NO_ERR;
114
115 close_fd:
116         close(fd);
117         return rc;
118 }
119
120 static int write_sysfs_file(const char *path, const char *attr,
121                             void *val, const size_t size, const int nelem)
122 {
123         int fd;
124         int rc = LUSTRE_CFG_RC_GENERIC_ERR;
125
126         fd = open_sysfs_file(path, attr, O_WRONLY | O_TRUNC);
127         if (fd == -1)
128                 return LUSTRE_CFG_RC_NO_MATCH;
129
130         if (write(fd, val, size * nelem) == -1)
131                 goto close_fd;
132
133         rc = LUSTRE_CFG_RC_NO_ERR;
134
135 close_fd:
136         close(fd);
137         return rc;
138 }
139
140 /*
141  * free_intf_descr
142  *      frees the memory allocated for an intf descriptor.
143  */
144 void free_intf_descr(struct lnet_dlc_intf_descr *intf_descr)
145 {
146         if (!intf_descr)
147                 return;
148
149         if (intf_descr->cpt_expr != NULL)
150                 cfs_expr_list_free(intf_descr->cpt_expr);
151         free(intf_descr);
152 }
153
154 /*
155  * lustre_lnet_add_ip_range
156  * Formatting:
157  *      given a string of the format:
158  *      <expr.expr.expr.expr> parse each expr into
159  *      a lustre_lnet_ip_range_descr structure and insert on the list.
160  *
161  *      This function is called from
162  *              YAML on each ip-range.
163  *              As a result of lnetctl command
164  *              When building a NID or P2P selection rules
165  */
166 int lustre_lnet_add_ip_range(struct list_head *list, char *str_ip_range)
167 {
168         struct lustre_lnet_ip_range_descr *ip_range;
169         int rc;
170
171         ip_range = calloc(1, sizeof(*ip_range));
172         if (ip_range == NULL)
173                 return LUSTRE_CFG_RC_OUT_OF_MEM;
174
175         INIT_LIST_HEAD(&ip_range->ipr_entry);
176         INIT_LIST_HEAD(&ip_range->ipr_expr);
177
178         rc = cfs_ip_addr_parse(str_ip_range, strlen(str_ip_range),
179                                &ip_range->ipr_expr);
180         if (rc != 0)
181                 return LUSTRE_CFG_RC_BAD_PARAM;
182
183         list_add_tail(&ip_range->ipr_entry, list);
184
185         return LUSTRE_CFG_RC_NO_ERR;
186 }
187
188 int lustre_lnet_add_intf_descr(struct list_head *list, char *intf, int len)
189 {
190         char *open_sq_bracket = NULL, *close_sq_bracket = NULL,
191              *intf_name;
192         struct lnet_dlc_intf_descr *intf_descr = NULL;
193         int rc;
194         char intf_string[LNET_MAX_STR_LEN];
195
196         if (len >= LNET_MAX_STR_LEN)
197                 return LUSTRE_CFG_RC_BAD_PARAM;
198
199         strncpy(intf_string, intf, len);
200         intf_string[len] = '\0';
201
202         intf_descr = calloc(1, sizeof(*intf_descr));
203         if (intf_descr == NULL)
204                 return LUSTRE_CFG_RC_OUT_OF_MEM;
205
206         INIT_LIST_HEAD(&intf_descr->intf_on_network);
207
208         intf_name = intf_string;
209         open_sq_bracket = strchr(intf_string, '[');
210         if (open_sq_bracket != NULL) {
211                 close_sq_bracket = strchr(intf_string, ']');
212                 if (close_sq_bracket == NULL) {
213                         free(intf_descr);
214                         return LUSTRE_CFG_RC_BAD_PARAM;
215                 }
216                 rc = cfs_expr_list_parse(open_sq_bracket,
217                                          strlen(open_sq_bracket), 0, UINT_MAX,
218                                          &intf_descr->cpt_expr);
219                 if (rc < 0) {
220                         free(intf_descr);
221                         return LUSTRE_CFG_RC_BAD_PARAM;
222                 }
223                 strncpy(intf_descr->intf_name, intf_name,
224                         open_sq_bracket - intf_name);
225                 intf_descr->intf_name[open_sq_bracket - intf_name] = '\0';
226         } else {
227                 strcpy(intf_descr->intf_name, intf_name);
228                 intf_descr->cpt_expr = NULL;
229         }
230
231         list_add_tail(&intf_descr->intf_on_network, list);
232
233         return LUSTRE_CFG_RC_NO_ERR;
234 }
235
236 void lustre_lnet_init_nw_descr(struct lnet_dlc_network_descr *nw_descr)
237 {
238         if (nw_descr != NULL) {
239                 nw_descr->nw_id = 0;
240                 INIT_LIST_HEAD(&nw_descr->network_on_rule);
241                 INIT_LIST_HEAD(&nw_descr->nw_intflist);
242         }
243 }
244
245 int lustre_lnet_parse_nidstr(char *nidstr, lnet_nid_t *lnet_nidlist,
246                              int max_nids, char *err_str)
247 {
248         int rc, num_nids = 0;
249         struct list_head nidlist;
250
251         if (!nidstr) {
252                 snprintf(err_str, LNET_MAX_STR_LEN, "supplied nidstr is NULL");
253                 return LUSTRE_CFG_RC_BAD_PARAM;
254         }
255
256         if (strchr(nidstr, '*')) {
257                 snprintf(err_str, LNET_MAX_STR_LEN,
258                          "asterisk not allowed in nidstring \"%s\"", nidstr);
259                 return LUSTRE_CFG_RC_BAD_PARAM;
260         }
261
262         INIT_LIST_HEAD(&nidlist);
263         rc = cfs_parse_nidlist(nidstr, strlen(nidstr), &nidlist);
264         if (rc == 0) {
265                 snprintf(err_str, LNET_MAX_STR_LEN,
266                          "Unable to parse nidlist from: %s\n", nidstr);
267                 return LUSTRE_CFG_RC_BAD_PARAM;
268         }
269
270         if (list_empty(&nidlist)) {
271                 snprintf(err_str, LNET_MAX_STR_LEN,
272                          "\"%s\" does not specify any valid nid lists", nidstr);
273                 return LUSTRE_CFG_RC_BAD_PARAM;
274         }
275
276         num_nids = cfs_expand_nidlist(&nidlist, lnet_nidlist, max_nids);
277         cfs_free_nidlist(&nidlist);
278
279         if (num_nids == -1) {
280                 snprintf(err_str, LNET_MAX_STR_LEN,
281                          "\"%s\" specifies more than the %d NIDs allowed by this operation.",
282                          nidstr, max_nids);
283                 return LUSTRE_CFG_RC_BAD_PARAM;
284         }
285
286         if (num_nids < 0) {
287                 snprintf(err_str, LNET_MAX_STR_LEN,
288                          "Failed to expand nidstr: %s", strerror(num_nids));
289                 return LUSTRE_CFG_RC_OUT_OF_MEM;
290         }
291
292         if (num_nids == 0) {
293                 snprintf(err_str, LNET_MAX_STR_LEN,
294                          "\"%s\" did not expand to any nids", nidstr);
295                 return LUSTRE_CFG_RC_BAD_PARAM;
296         }
297
298         return num_nids;
299 }
300
301 /*
302  * format expected:
303  *      <intf>[<expr>], <intf>[<expr>],..
304  */
305 int lustre_lnet_parse_interfaces(char *intf_str,
306                                  struct lnet_dlc_network_descr *nw_descr)
307 {
308         char *open_square;
309         char *close_square;
310         char *comma;
311         char *cur = intf_str, *next = NULL;
312         char *end = intf_str + strlen(intf_str);
313         int rc, len;
314         struct lnet_dlc_intf_descr *intf_descr, *tmp;
315
316         if (nw_descr == NULL)
317                 return LUSTRE_CFG_RC_BAD_PARAM;
318
319         while (cur < end) {
320                 open_square = strchr(cur, '[');
321                 if (open_square != NULL) {
322                         close_square = strchr(cur, ']');
323                         if (close_square == NULL) {
324                                 rc = LUSTRE_CFG_RC_BAD_PARAM;
325                                 goto failed;
326                         }
327
328                         comma = strchr(cur, ',');
329                         if (comma != NULL && comma > close_square) {
330                                 next = comma + 1;
331                                 len = next - close_square;
332                         } else {
333                                 len = strlen(cur);
334                                 next = cur + len;
335                         }
336                 } else {
337                         comma = strchr(cur, ',');
338                         if (comma != NULL) {
339                                 next = comma + 1;
340                                 len = comma - cur;
341                         } else {
342                                 len = strlen(cur);
343                                 next = cur + len;
344                         }
345                 }
346
347                 rc = lustre_lnet_add_intf_descr(&nw_descr->nw_intflist, cur, len);
348                 if (rc != LUSTRE_CFG_RC_NO_ERR)
349                         goto failed;
350
351                 cur = next;
352         }
353
354         return LUSTRE_CFG_RC_NO_ERR;
355
356 failed:
357         list_for_each_entry_safe(intf_descr, tmp, &nw_descr->nw_intflist,
358                                  intf_on_network) {
359                 list_del(&intf_descr->intf_on_network);
360                 free_intf_descr(intf_descr);
361         }
362
363         return rc;
364 }
365
366 int lustre_lnet_config_lib_init(void)
367 {
368         return register_ioc_dev(LNET_DEV_ID, LNET_DEV_PATH);
369 }
370
371 void lustre_lnet_config_lib_uninit(void)
372 {
373         unregister_ioc_dev(LNET_DEV_ID);
374 }
375
376 int lustre_lnet_config_ni_system(bool up, bool load_ni_from_mod,
377                                  int seq_no, struct cYAML **err_rc)
378 {
379         struct libcfs_ioctl_data data;
380         unsigned int opc;
381         int rc;
382         char err_str[LNET_MAX_STR_LEN] = "\"Success\"";
383
384         LIBCFS_IOC_INIT(data);
385
386         /* Reverse logic is used here in order not to change
387          * the lctl utility */
388         data.ioc_flags = load_ni_from_mod ? 0 : 1;
389
390         opc = up ? IOC_LIBCFS_CONFIGURE : IOC_LIBCFS_UNCONFIGURE;
391
392         rc = l_ioctl(LNET_DEV_ID, opc, &data);
393         if (rc != 0) {
394                 snprintf(err_str,
395                         sizeof(err_str),
396                         "\"LNet %s error: %s\"", (up) ? "configure" :
397                         "unconfigure", strerror(errno));
398                 rc = -errno;
399         }
400
401         cYAML_build_error(rc, seq_no, (up) ? CONFIG_CMD : UNCONFIG_CMD,
402                           "lnet", err_str, err_rc);
403
404         return rc;
405 }
406
407 static int dispatch_peer_ni_cmd(__u32 cmd, struct lnet_ioctl_peer_cfg *data,
408                                 char *err_str, char *cmd_str)
409 {
410         int rc;
411
412         rc = l_ioctl(LNET_DEV_ID, cmd, data);
413         if (rc) {
414                 rc = -errno;
415                 snprintf(err_str, LNET_MAX_STR_LEN,
416                          "\"%s peer ni operation failed: %s\"",
417                          cmd_str, strerror(errno));
418         }
419
420         return rc;
421 }
422
423 static int infra_ping_nid(char *ping_nids, char *oper, int param, int ioc_call,
424                           int seq_no, struct cYAML **show_rc,
425                           struct cYAML **err_rc)
426 {
427         void *data = NULL;
428         struct lnet_ioctl_ping_data ping;
429         struct cYAML *root = NULL, *ping_node = NULL, *item = NULL,
430                      *first_seq = NULL, *tmp = NULL, *peer_ni = NULL;
431         struct lnet_process_id id;
432         char err_str[LNET_MAX_STR_LEN] = {0};
433         char *sep, *token, *end;
434         char buf[6];
435         size_t len;
436         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
437         int i;
438         bool flag = false;
439
440         len = (sizeof(struct lnet_process_id) * LNET_INTERFACES_MAX_DEFAULT);
441
442         data = calloc(1, len);
443         if (data == NULL)
444                 goto out;
445
446         /* create struct cYAML root object */
447         root = cYAML_create_object(NULL, NULL);
448         if (root == NULL)
449                 goto out;
450
451         ping_node = cYAML_create_seq(root, oper);
452         if (ping_node == NULL)
453                 goto out;
454
455         /* tokenise each nid in string ping_nids */
456         token = strtok(ping_nids, ",");
457
458         do {
459                 item = cYAML_create_seq_item(ping_node);
460                 if (item == NULL)
461                         goto out;
462
463                 if (first_seq == NULL)
464                         first_seq = item;
465
466                 /* check if '-' is a part of NID, token */
467                 sep = strchr(token, '-');
468                 if (sep == NULL) {
469                         id.pid = LNET_PID_ANY;
470                         /* if no net is specified, libcfs_str2nid() will assume tcp */
471                         id.nid = libcfs_str2nid(token);
472                         if (id.nid == LNET_NID_ANY) {
473                                 snprintf(err_str, sizeof(err_str),
474                                          "\"cannot parse NID '%s'\"",
475                                          token);
476                                 rc = LUSTRE_CFG_RC_BAD_PARAM;
477                                 cYAML_build_error(rc, seq_no, MANAGE_CMD,
478                                                   oper, err_str, err_rc);
479                                 continue;
480                         }
481                 } else {
482                         if (token[0] == 'u' || token[0] == 'U')
483                                 id.pid = (strtoul(&token[1], &end, 0) |
484                                           (LNET_PID_USERFLAG));
485                         else
486                                 id.pid = strtoul(token, &end, 0);
487
488                         /* assuming '-' is part of hostname */
489                         if (end != sep) {
490                                 id.pid = LNET_PID_ANY;
491                                 id.nid = libcfs_str2nid(token);
492                                 if (id.nid == LNET_NID_ANY) {
493                                         snprintf(err_str, sizeof(err_str),
494                                                  "\"cannot parse NID '%s'\"",
495                                                  token);
496                                         rc = LUSTRE_CFG_RC_BAD_PARAM;
497                                         cYAML_build_error(rc, seq_no, MANAGE_CMD,
498                                                           oper, err_str,
499                                                           err_rc);
500                                         continue;
501                                 }
502                         } else {
503                                 id.nid = libcfs_str2nid(sep + 1);
504                                 if (id.nid == LNET_NID_ANY) {
505                                         snprintf(err_str, sizeof(err_str),
506                                                  "\"cannot parse NID '%s'\"",
507                                                  token);
508                                         rc = LUSTRE_CFG_RC_BAD_PARAM;
509                                         cYAML_build_error(rc, seq_no, MANAGE_CMD,
510                                                           oper, err_str,
511                                                           err_rc);
512                                         continue;
513                                 }
514                         }
515                 }
516                 LIBCFS_IOC_INIT_V2(ping, ping_hdr);
517                 ping.ping_hdr.ioc_len = sizeof(ping);
518                 ping.ping_id          = id;
519                 ping.op_param         = param;
520                 ping.ping_count       = LNET_INTERFACES_MAX_DEFAULT;
521                 ping.ping_buf         = data;
522
523                 rc = l_ioctl(LNET_DEV_ID, ioc_call, &ping);
524                 if (rc != 0) {
525                         snprintf(err_str,
526                                  sizeof(err_str), "failed to %s %s: %s\n", oper,
527                                  id.pid == LNET_PID_ANY ?
528                                  libcfs_nid2str(id.nid) :
529                                  libcfs_id2str(id), strerror(errno));
530                         rc = LUSTRE_CFG_RC_BAD_PARAM;
531                         cYAML_build_error(rc, seq_no, MANAGE_CMD,
532                                           oper, err_str, err_rc);
533                         continue;
534                 }
535
536                 if (cYAML_create_string(item, "primary nid",
537                                         libcfs_nid2str(ping.ping_id.nid)) == NULL)
538                         goto out;
539
540                 if (cYAML_create_string(item, "Multi-Rail", ping.mr_info ?
541                                         "True" : "False") == NULL)
542                         goto out;
543
544                 tmp = cYAML_create_seq(item, "peer ni");
545                 if (tmp == NULL)
546                         goto out;
547
548                 for (i = 0; i < ping.ping_count; i++) {
549                         if (ping.ping_buf[i].nid == LNET_NID_LO_0)
550                                 continue;
551                         peer_ni = cYAML_create_seq_item(tmp);
552                         if (peer_ni == NULL)
553                                 goto out;
554                         memset(buf, 0, sizeof buf);
555                         snprintf(buf, sizeof buf, "nid");
556                         if (cYAML_create_string(peer_ni, buf,
557                                                 libcfs_nid2str(ping.ping_buf[i].nid)) == NULL)
558                                 goto out;
559                 }
560
561                 flag = true;
562
563         } while ((token = strtok(NULL, ",")) != NULL);
564
565         if (flag)
566                 rc = LUSTRE_CFG_RC_NO_ERR;
567
568 out:
569         if (data)
570                 free(data);
571         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR) {
572                 cYAML_free_tree(root);
573         } else if (show_rc != NULL && *show_rc != NULL) {
574                 struct cYAML *show_node;
575                 show_node = cYAML_get_object_item(*show_rc, oper);
576                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
577                         cYAML_insert_child(show_node, first_seq);
578                         free(ping_node);
579                         free(root);
580                 } else if (show_node == NULL) {
581                         cYAML_insert_sibling((*show_rc)->cy_child,
582                                              ping_node);
583                         free(root);
584                 } else {
585                         cYAML_free_tree(root);
586                 }
587         } else {
588                 *show_rc = root;
589         }
590
591         return rc;
592 }
593
594 int lustre_lnet_ping_nid(char *ping_nids, int timeout, int seq_no,
595                          struct cYAML **show_rc, struct cYAML **err_rc)
596 {
597         int rc;
598
599         rc = infra_ping_nid(ping_nids, "ping", timeout, IOC_LIBCFS_PING_PEER,
600                             seq_no, show_rc, err_rc);
601         return rc;
602 }
603
604 int lustre_lnet_discover_nid(char *ping_nids, int force, int seq_no,
605                          struct cYAML **show_rc, struct cYAML **err_rc)
606 {
607         int rc;
608
609         rc = infra_ping_nid(ping_nids, "discover", force, IOC_LIBCFS_DISCOVER,
610                             seq_no, show_rc, err_rc);
611         return rc;
612 }
613
614 static int lustre_lnet_handle_peer_nidlist(lnet_nid_t *nidlist, int num_nids,
615                                            bool is_mr, __u32 cmd,
616                                            char *cmd_type, char *err_str)
617 {
618         struct lnet_ioctl_peer_cfg data;
619         int rc, nid_idx;
620
621         if (cmd == IOC_LIBCFS_ADD_PEER_NI) {
622                 /* When adding a peer we first need to create the peer using the
623                  * specified (or implied) primary nid. Then we can add
624                  * additional nids to this peer using the primary nid as a key
625                  */
626                 LIBCFS_IOC_INIT_V2(data, prcfg_hdr);
627                 data.prcfg_mr = is_mr;
628                 data.prcfg_prim_nid = nidlist[0];
629                 data.prcfg_cfg_nid = LNET_NID_ANY;
630
631                 rc = dispatch_peer_ni_cmd(cmd, &data, err_str, cmd_type);
632
633                 if (rc)
634                         return rc;
635         }
636
637         /* Add or delete any specified NIs associated with the specified
638          * (or implied) primary nid
639          */
640         for (nid_idx = 1; nid_idx < num_nids; nid_idx++) {
641                 LIBCFS_IOC_INIT_V2(data, prcfg_hdr);
642                 data.prcfg_mr = is_mr;
643                 data.prcfg_prim_nid = nidlist[0];
644                 data.prcfg_cfg_nid = nidlist[nid_idx];
645
646                 rc = dispatch_peer_ni_cmd(cmd, &data, err_str, cmd_type);
647
648                 if (rc)
649                         return rc;
650         }
651
652         if (cmd == IOC_LIBCFS_DEL_PEER_NI && num_nids == 1) {
653                 /* In the delete case we may have been given just the
654                  * primary nid of the peer. This tells us to delete the peer
655                  * completely (rather than just delete some of its NIs)
656                  */
657                 LIBCFS_IOC_INIT_V2(data, prcfg_hdr);
658                 data.prcfg_prim_nid = nidlist[0];
659                 data.prcfg_cfg_nid = LNET_NID_ANY;
660
661                 rc = dispatch_peer_ni_cmd(cmd, &data, err_str, cmd_type);
662         }
663
664         return rc;
665 }
666
667 static int
668 lustre_lnet_mod_peer_nidlist(lnet_nid_t pnid, lnet_nid_t *lnet_nidlist,
669                              int cmd, int num_nids, bool is_mr, int seq_no,
670                              struct cYAML **err_rc)
671 {
672         int rc = LUSTRE_CFG_RC_NO_ERR;
673         char err_str[LNET_MAX_STR_LEN];
674         lnet_nid_t *lnet_nidlist2 = NULL;
675         int ioc_cmd = (cmd == LNETCTL_ADD_CMD) ? IOC_LIBCFS_ADD_PEER_NI :
676                 IOC_LIBCFS_DEL_PEER_NI;
677         char *cmd_str = (cmd == LNETCTL_ADD_CMD) ? ADD_CMD : DEL_CMD;
678
679         num_nids++;
680         lnet_nidlist2 = calloc(sizeof(*lnet_nidlist2), num_nids);
681         if (!lnet_nidlist2) {
682                 snprintf(err_str, LNET_MAX_STR_LEN, "out of memory");
683                 rc = LUSTRE_CFG_RC_OUT_OF_MEM;
684                 goto out;
685         }
686         lnet_nidlist2[0] = pnid;
687         memcpy(&lnet_nidlist2[1], lnet_nidlist, sizeof(*lnet_nidlist) *
688                                                 (num_nids - 1));
689
690         rc = lustre_lnet_handle_peer_nidlist(lnet_nidlist2,
691                                              num_nids, is_mr, ioc_cmd,
692                                              cmd_str, err_str);
693 out:
694         if (lnet_nidlist2)
695                 free(lnet_nidlist2);
696
697         cYAML_build_error(rc, seq_no, cmd_str, "peer_ni", err_str, err_rc);
698         return rc;
699 }
700
701 static void
702 replace_sep(char *str, char sep, char newsep)
703 {
704         int bracket = 0;
705         int i;
706         if (!str)
707                 return;
708         for (i = 0; i < strlen(str); i++) {
709                 /* don't replace ',' within [] */
710                 if (str[i] == '[')
711                         bracket++;
712                 else if (str[i] == ']')
713                         bracket--;
714                 else if (str[i] == sep && bracket == 0)
715                         str[i] = newsep;
716         }
717 }
718
719 int lustre_lnet_modify_peer(char *prim_nid, char *nids, bool is_mr,
720                             int cmd, int seq_no, struct cYAML **err_rc)
721 {
722         int num_nids, rc;
723         char err_str[LNET_MAX_STR_LEN] = "Error";
724         lnet_nid_t lnet_nidlist[LNET_MAX_NIDS_PER_PEER];
725         lnet_nid_t pnid = LNET_NID_ANY;
726
727         if (!prim_nid) {
728                 rc = LUSTRE_CFG_RC_BAD_PARAM;
729                 snprintf(err_str, LNET_MAX_STR_LEN,
730                          "--prim_nid must be specified");
731                 goto out;
732         }
733
734         pnid = libcfs_str2nid(prim_nid);
735         if (pnid == LNET_NID_ANY) {
736                 rc = LUSTRE_CFG_RC_BAD_PARAM;
737                 snprintf(err_str, LNET_MAX_STR_LEN,
738                         "badly formatted primary NID: %s", prim_nid);
739                 goto out;
740         }
741
742         num_nids = 0;
743         if (nids) {
744                 /*
745                 * if there is no primary nid we need to make the first nid in the
746                 * nids list the primary nid
747                 */
748                 replace_sep(nids, ',', ' ');
749                 rc = lustre_lnet_parse_nidstr(nids, lnet_nidlist,
750                                         LNET_MAX_NIDS_PER_PEER, err_str);
751                 if (rc < 0)
752                         goto out;
753
754                 num_nids = rc;
755         }
756
757         rc = lustre_lnet_mod_peer_nidlist(pnid, lnet_nidlist,
758                                           cmd, num_nids, is_mr,
759                                           -1, err_rc);
760
761 out:
762         if (rc != LUSTRE_CFG_RC_NO_ERR)
763                 cYAML_build_error(rc, -1, "peer",
764                                 cmd == LNETCTL_ADD_CMD ? "add" : "del",
765                                 err_str, err_rc);
766
767         return rc;
768 }
769
770 int lustre_lnet_route_common(char *nw, char *nidstr, int hops, int prio,
771                              int sen, int seq_no, struct cYAML **err_rc,
772                              int cmd)
773 {
774         int rc, num_nids, idx;
775         __u32 rnet;
776         char err_str[LNET_MAX_STR_LEN] = "\"generic error\"";
777         struct lnet_ioctl_config_data data;
778         lnet_nid_t lnet_nidlist[LNET_MAX_NIDS_PER_PEER];
779
780         if (nw == NULL || nidstr == NULL) {
781                 snprintf(err_str, LNET_MAX_STR_LEN,
782                          "\"missing mandatory parameter:'%s'\"",
783                          (nw == NULL && nidstr == NULL) ? "network, gateway" :
784                          (nw == NULL) ? "network" : "gateway");
785                 rc = LUSTRE_CFG_RC_MISSING_PARAM;
786                 goto out;
787         }
788
789         rnet = libcfs_str2net(nw);
790         if (rnet == LNET_NET_ANY) {
791                 snprintf(err_str, LNET_MAX_STR_LEN,
792                          "\"cannot parse remote net %s\"", nw);
793                 rc = LUSTRE_CFG_RC_BAD_PARAM;
794                 goto out;
795         }
796
797         replace_sep(nidstr, ',', ' ');
798         rc = lustre_lnet_parse_nidstr(nidstr, lnet_nidlist,
799                                       LNET_MAX_NIDS_PER_PEER, err_str);
800         if (rc < 0)
801                 goto out;
802
803         num_nids = rc;
804
805         for (idx = 0; idx < num_nids; idx++) {
806                 LIBCFS_IOC_INIT_V2(data, cfg_hdr);
807                 data.cfg_net = rnet;
808                 if (cmd == LNETCTL_ADD_CMD) {
809                         data.cfg_config_u.cfg_route.rtr_hop = hops;
810                         data.cfg_config_u.cfg_route.rtr_priority = prio;
811                         data.cfg_config_u.cfg_route.rtr_sensitivity = sen;
812                 }
813
814                 data.cfg_nid = lnet_nidlist[idx];
815
816                 if (cmd == LNETCTL_ADD_CMD)
817                         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_ADD_ROUTE,
818                                         &data);
819                 else
820                         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_DEL_ROUTE,
821                                         &data);
822
823                 if (rc != 0 && errno != EEXIST &&
824                         errno != EHOSTUNREACH) {
825                         rc = -errno;
826                         snprintf(err_str, LNET_MAX_STR_LEN,
827                                         "route operation failed: %s",
828                                         strerror(errno));
829                         goto out;
830                 } else if (errno == EEXIST) {
831                         /*
832                          * continue chugging along if one of the
833                          * routes already exists
834                          */
835                         rc = 0;
836                 }
837         }
838
839 out:
840         cYAML_build_error(rc, seq_no,
841                           cmd == LNETCTL_ADD_CMD ? ADD_CMD : DEL_CMD, "route",
842                           err_str, err_rc);
843
844         return rc;
845 }
846
847 int lustre_lnet_config_route(char *nw, char *nidstr, int hops, int prio,
848                              int sen, int seq_no, struct cYAML **err_rc)
849 {
850         int rc;
851         char err_str[LNET_MAX_STR_LEN] = "\"generic error\"";
852
853         if (hops == -1) {
854                 hops = LNET_UNDEFINED_HOPS;
855         } else if (hops < 1 || hops > 255) {
856                 snprintf(err_str, LNET_MAX_STR_LEN,
857                          "\"invalid hop count %d, must be between 1 and 255\"",
858                          hops);
859                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
860                 goto out;
861         }
862
863         if (prio == -1) {
864                 prio = 0;
865         } else if (prio < 0) {
866                 snprintf(err_str, LNET_MAX_STR_LEN,
867                          "\"invalid priority %d, must be greater than 0\"",
868                          prio);
869                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
870                 goto out;
871         }
872
873         if (sen == -1) {
874                 sen = 1;
875         } else if (sen < 1) {
876                 snprintf(err_str, LNET_MAX_STR_LEN,
877                          "\"invalid health sensitivity %d, must be 1 or greater\"",
878                          sen);
879                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
880                 goto out;
881         }
882
883         rc = lustre_lnet_route_common(nw, nidstr, hops, prio, sen, seq_no,
884                                       err_rc, LNETCTL_ADD_CMD);
885         return rc;
886 out:
887         cYAML_build_error(rc, seq_no, ADD_CMD, "route", err_str, err_rc);
888
889         return rc;
890 }
891
892 int lustre_lnet_del_route(char *nw, char *nidstr, int seq_no,
893                           struct cYAML **err_rc)
894 {
895         return lustre_lnet_route_common(nw, nidstr, 0, 0, 0, seq_no, err_rc,
896                                         LNETCTL_DEL_CMD);
897 }
898
899 int lustre_lnet_show_route(char *nw, char *gw, int hops, int prio, int detail,
900                            int seq_no, struct cYAML **show_rc,
901                            struct cYAML **err_rc, bool backup)
902 {
903         struct lnet_ioctl_config_data data;
904         lnet_nid_t gateway_nid;
905         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
906         int l_errno = 0;
907         __u32 net = LNET_NET_ANY;
908         int i;
909         struct cYAML *root = NULL, *route = NULL, *item = NULL;
910         struct cYAML *first_seq = NULL;
911         char err_str[LNET_MAX_STR_LEN] = "\"out of memory\"";
912         bool exist = false;
913
914         if (nw != NULL) {
915                 net = libcfs_str2net(nw);
916                 if (net == LNET_NET_ANY) {
917                         snprintf(err_str,
918                                  sizeof(err_str),
919                                  "\"cannot parse net '%s'\"", nw);
920                         rc = LUSTRE_CFG_RC_BAD_PARAM;
921                         goto out;
922                 }
923
924         } else {
925                 /* show all routes without filtering on net */
926                 net = LNET_NET_ANY;
927         }
928
929         if (gw != NULL) {
930                 gateway_nid = libcfs_str2nid(gw);
931                 if (gateway_nid == LNET_NID_ANY) {
932                         snprintf(err_str,
933                                  sizeof(err_str),
934                                  "\"cannot parse gateway NID '%s'\"", gw);
935                         rc = LUSTRE_CFG_RC_BAD_PARAM;
936                         goto out;
937                 }
938         } else
939                 /* show all routes with out filtering on gateway */
940                 gateway_nid = LNET_NID_ANY;
941
942         if ((hops < 1 && hops != -1) || hops > 255) {
943                 snprintf(err_str,
944                          sizeof(err_str),
945                          "\"invalid hop count %d, must be between 0 and 256\"",
946                          hops);
947                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
948                 goto out;
949         }
950
951         /* create struct cYAML root object */
952         root = cYAML_create_object(NULL, NULL);
953         if (root == NULL)
954                 goto out;
955
956         route = cYAML_create_seq(root, "route");
957         if (route == NULL)
958                 goto out;
959
960         for (i = 0;; i++) {
961                 __u32 rt_alive;
962                 __u32 rt_multi_hop;
963
964                 LIBCFS_IOC_INIT_V2(data, cfg_hdr);
965                 data.cfg_count = i;
966
967                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_ROUTE, &data);
968                 if (rc != 0) {
969                         l_errno = errno;
970                         break;
971                 }
972
973                 /* filter on provided data */
974                 if (net != LNET_NET_ANY &&
975                     net != data.cfg_net)
976                         continue;
977
978                 if (gateway_nid != LNET_NID_ANY &&
979                     gateway_nid != data.cfg_nid)
980                         continue;
981
982                 if (hops != -1 &&
983                     hops != data.cfg_config_u.cfg_route.rtr_hop)
984                         continue;
985
986                 if (prio != -1 &&
987                     prio != data.cfg_config_u.cfg_route.rtr_priority)
988                         continue;
989
990                 /* default rc to -1 incase we hit the goto */
991                 rc = -1;
992                 exist = true;
993
994                 item = cYAML_create_seq_item(route);
995                 if (item == NULL)
996                         goto out;
997
998                 if (first_seq == NULL)
999                         first_seq = item;
1000
1001                 if (cYAML_create_string(item, "net",
1002                                         libcfs_net2str(data.cfg_net)) == NULL)
1003                         goto out;
1004
1005                 if (cYAML_create_string(item, "gateway",
1006                                         libcfs_nid2str(data.cfg_nid)) == NULL)
1007                         goto out;
1008
1009                 if (detail) {
1010                         if (cYAML_create_number(item, "hop",
1011                                                 (int) data.cfg_config_u.
1012                                                 cfg_route.rtr_hop) ==
1013                             NULL)
1014                                 goto out;
1015
1016                         if (cYAML_create_number(item, "priority",
1017                                                 data.cfg_config_u.
1018                                                 cfg_route.rtr_priority) == NULL)
1019                                 goto out;
1020
1021                         if (cYAML_create_number(item, "health_sensitivity",
1022                                                 data.cfg_config_u.
1023                                                 cfg_route.rtr_sensitivity) == NULL)
1024                                 goto out;
1025
1026                         rt_alive = data.cfg_config_u.cfg_route.rtr_flags &
1027                                         LNET_RT_ALIVE;
1028                         rt_multi_hop = data.cfg_config_u.cfg_route.rtr_flags &
1029                                         LNET_RT_MULTI_HOP;
1030
1031                         if (!backup &&
1032                             cYAML_create_string(item, "state",
1033                                                 rt_alive ?
1034                                                 "up" : "down") == NULL)
1035                                 goto out;
1036
1037                         if (!backup &&
1038                             cYAML_create_string(item, "type",
1039                                                 rt_multi_hop?
1040                                                 "multi-hop" : "single-hop") == NULL)
1041                                 goto out;
1042                 }
1043         }
1044
1045         /* print output iff show_rc is not provided */
1046         if (show_rc == NULL)
1047                 cYAML_print_tree(root);
1048
1049         if (l_errno != ENOENT) {
1050                 snprintf(err_str,
1051                          sizeof(err_str),
1052                          "\"cannot get routes: %s\"",
1053                          strerror(l_errno));
1054                 rc = -l_errno;
1055                 goto out;
1056         } else
1057                 rc = LUSTRE_CFG_RC_NO_ERR;
1058
1059         snprintf(err_str, sizeof(err_str), "\"success\"");
1060 out:
1061         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR || !exist) {
1062                 cYAML_free_tree(root);
1063         } else if (show_rc != NULL && *show_rc != NULL) {
1064                 struct cYAML *show_node;
1065                 /* find the route node, if one doesn't exist then
1066                  * insert one.  Otherwise add to the one there
1067                  */
1068                 show_node = cYAML_get_object_item(*show_rc, "route");
1069                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
1070                         cYAML_insert_child(show_node, first_seq);
1071                         free(route);
1072                         free(root);
1073                 } else if (show_node == NULL) {
1074                         cYAML_insert_sibling((*show_rc)->cy_child,
1075                                                 route);
1076                         free(root);
1077                 } else {
1078                         cYAML_free_tree(root);
1079                 }
1080         } else {
1081                 *show_rc = root;
1082         }
1083
1084         cYAML_build_error(rc, seq_no, SHOW_CMD, "route", err_str, err_rc);
1085
1086         return rc;
1087 }
1088
1089 static int socket_intf_query(int request, char *intf,
1090                              struct ifreq *ifr)
1091 {
1092         int rc = 0;
1093         int sockfd;
1094
1095         if (strlen(intf) >= IFNAMSIZ || ifr == NULL)
1096                 return LUSTRE_CFG_RC_BAD_PARAM;
1097
1098         sockfd = socket(AF_INET, SOCK_DGRAM, 0);
1099         if (sockfd < 0)
1100                 return LUSTRE_CFG_RC_BAD_PARAM;
1101
1102         strcpy(ifr->ifr_name, intf);
1103         rc = ioctl(sockfd, request, ifr);
1104         if (rc != 0)
1105                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1106
1107         close(sockfd);
1108
1109         return rc;
1110 }
1111
1112 static int lustre_lnet_queryip(struct lnet_dlc_intf_descr *intf, __u32 *ip)
1113 {
1114         struct ifreq ifr;
1115         int rc;
1116
1117         memset(&ifr, 0, sizeof(ifr));
1118         rc = socket_intf_query(SIOCGIFFLAGS, intf->intf_name, &ifr);
1119         if (rc != 0)
1120                 return LUSTRE_CFG_RC_BAD_PARAM;
1121
1122         if ((ifr.ifr_flags & IFF_UP) == 0)
1123                 return LUSTRE_CFG_RC_BAD_PARAM;
1124
1125         memset(&ifr, 0, sizeof(ifr));
1126         rc = socket_intf_query(SIOCGIFADDR, intf->intf_name, &ifr);
1127         if (rc != 0)
1128                 return LUSTRE_CFG_RC_BAD_PARAM;
1129
1130         *ip = ((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr.s_addr;
1131         *ip = bswap_32(*ip);
1132
1133         return LUSTRE_CFG_RC_NO_ERR;
1134 }
1135
1136 /*
1137  * for each interface in the array of interfaces find the IP address of
1138  * that interface, create its nid and add it to an array of NIDs.
1139  * Stop if any of the interfaces is down
1140  */
1141 static int lustre_lnet_intf2nids(struct lnet_dlc_network_descr *nw,
1142                                  lnet_nid_t **nids, __u32 *nnids,
1143                                  char *err_str, size_t str_len)
1144 {
1145         int i = 0, count = 0, rc;
1146         struct lnet_dlc_intf_descr *intf;
1147         char val[LNET_MAX_STR_LEN];
1148         __u32 ip;
1149         int gni_num;
1150         char *endp;
1151         unsigned int num;
1152
1153
1154         if (nw == NULL || nids == NULL) {
1155                 snprintf(err_str, str_len,
1156                          "\"unexpected parameters to lustre_lnet_intf2nids()\"");
1157                 return LUSTRE_CFG_RC_BAD_PARAM;
1158         }
1159
1160         if (LNET_NETTYP(nw->nw_id) == GNILND) {
1161                 count = 1;
1162         } else {
1163                 list_for_each_entry(intf, &nw->nw_intflist, intf_on_network)
1164                         count++;
1165         }
1166
1167         *nids = calloc(count, sizeof(lnet_nid_t));
1168         if (*nids == NULL) {
1169                 snprintf(err_str, str_len,
1170                          "\"out of memory\"");
1171                 return LUSTRE_CFG_RC_OUT_OF_MEM;
1172         }
1173         /*
1174          * special case the GNI interface since it doesn't have an IP
1175          * address. The assumption is that there can only be one GNI
1176          * interface in the system. No interface name is provided.
1177          */
1178         if (LNET_NETTYP(nw->nw_id) == GNILND) {
1179                 rc = read_sysfs_file(gni_nid_path, "nid", val,
1180                                 1, sizeof(val));
1181                 if (rc) {
1182                         snprintf(err_str, str_len,
1183                                  "\"cannot read gni nid\"");
1184                         goto failed;
1185                 }
1186                 gni_num = atoi(val);
1187
1188                 (*nids)[i] = LNET_MKNID(nw->nw_id, gni_num);
1189
1190                 goto out;
1191         }
1192
1193         /* look at the other interfaces */
1194         list_for_each_entry(intf, &nw->nw_intflist, intf_on_network) {
1195                 if (LNET_NETTYP(nw->nw_id) == PTL4LND) {
1196                         /* handle LNDs with numeric interface name */
1197                         num = strtoul(intf->intf_name, &endp, 0);
1198                         if (endp == intf->intf_name || *endp != '\0') {
1199                                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1200                                 snprintf(err_str, str_len,
1201                                          "\"couldn't query intf %s\"",
1202                                          intf->intf_name);
1203                                 goto failed;
1204                         }
1205                         (*nids)[i] = LNET_MKNID(nw->nw_id, num);
1206                         i++;
1207                 } else {
1208                         /* handle LNDs with ip interface name */
1209                         rc = lustre_lnet_queryip(intf, &ip);
1210                         if (rc != LUSTRE_CFG_RC_NO_ERR) {
1211                                 snprintf(err_str, str_len,
1212                                          "\"couldn't query intf %s\"",
1213                                          intf->intf_name);
1214                                 goto failed;
1215                         }
1216                         (*nids)[i] = LNET_MKNID(nw->nw_id, ip);
1217                         i++;
1218                 }
1219         }
1220
1221 out:
1222         *nnids = count;
1223
1224         return 0;
1225
1226 failed:
1227         free(*nids);
1228         *nids = NULL;
1229         return rc;
1230 }
1231
1232 /*
1233  * called repeatedly until a match or no more ip range
1234  * What do you have?
1235  *      ip_range expression
1236  *      interface list with all the interface names.
1237  *      all the interfaces in the system.
1238  *
1239  *      try to match the ip_range expr to one of the interfaces' IPs in
1240  *      the system. If we hit a patch for an interface. Check if that
1241  *      interface name is in the list.
1242  *
1243  *      If there are more than one interface in the list, then make sure
1244  *      that the IPs for all of these interfaces match the ip ranges
1245  *      given.
1246  *
1247  *      for each interface in intf_list
1248  *              look up the intf name in ifa
1249  *              if not there then no match
1250  *              check ip obtained from ifa against a match to any of the
1251  *              ip_ranges given.
1252  *              If no match, then fail
1253  *
1254  *      The result is that all the interfaces have to match.
1255  */
1256 int lustre_lnet_match_ip_to_intf(struct ifaddrs *ifa,
1257                                  struct list_head *intf_list,
1258                                  struct list_head *ip_ranges)
1259 {
1260         int rc;
1261         __u32 ip;
1262         struct lnet_dlc_intf_descr *intf_descr, *tmp;
1263         struct ifaddrs *ifaddr = ifa;
1264         struct lustre_lnet_ip_range_descr *ip_range;
1265         int family;
1266
1267         /*
1268          * if there are no explicit interfaces, and no ip ranges, then
1269          * configure the first tcp interface we encounter.
1270          */
1271         if (list_empty(intf_list) && list_empty(ip_ranges)) {
1272                 for (ifaddr = ifa; ifaddr != NULL; ifaddr = ifaddr->ifa_next) {
1273                         if (ifaddr->ifa_addr == NULL)
1274                                 continue;
1275
1276                         if ((ifaddr->ifa_flags & IFF_UP) == 0)
1277                                 continue;
1278
1279                         family = ifaddr->ifa_addr->sa_family;
1280                         if (family == AF_INET &&
1281                             strcmp(ifaddr->ifa_name, "lo") != 0) {
1282                                 rc = lustre_lnet_add_intf_descr
1283                                         (intf_list, ifaddr->ifa_name,
1284                                         strlen(ifaddr->ifa_name));
1285
1286                                 if (rc != LUSTRE_CFG_RC_NO_ERR)
1287                                         return rc;
1288
1289                                 return LUSTRE_CFG_RC_MATCH;
1290                         }
1291                 }
1292                 return LUSTRE_CFG_RC_NO_MATCH;
1293         }
1294
1295         /*
1296          * First interface which matches an IP pattern will be used
1297          */
1298         if (list_empty(intf_list)) {
1299                 /*
1300                  * no interfaces provided in the rule, but an ip range is
1301                  * provided, so try and match an interface to the ip
1302                  * range.
1303                  */
1304                 for (ifaddr = ifa; ifaddr != NULL; ifaddr = ifaddr->ifa_next) {
1305                         if (ifaddr->ifa_addr == NULL)
1306                                 continue;
1307
1308                         if ((ifaddr->ifa_flags & IFF_UP) == 0)
1309                                 continue;
1310
1311                         family = ifaddr->ifa_addr->sa_family;
1312                         if (family == AF_INET) {
1313                                 ip = ((struct sockaddr_in *)ifaddr->ifa_addr)->
1314                                         sin_addr.s_addr;
1315
1316                                 list_for_each_entry(ip_range, ip_ranges,
1317                                                     ipr_entry) {
1318                                         rc = cfs_ip_addr_match(bswap_32(ip),
1319                                                         &ip_range->ipr_expr);
1320                                         if (!rc)
1321                                                 continue;
1322
1323                                         rc = lustre_lnet_add_intf_descr
1324                                           (intf_list, ifaddr->ifa_name,
1325                                            strlen(ifaddr->ifa_name));
1326
1327                                         if (rc != LUSTRE_CFG_RC_NO_ERR)
1328                                                 return rc;
1329                                 }
1330                         }
1331                 }
1332
1333                 if (!list_empty(intf_list))
1334                         return LUSTRE_CFG_RC_MATCH;
1335
1336                 return LUSTRE_CFG_RC_NO_MATCH;
1337         }
1338
1339         /*
1340          * If an interface is explicitly specified the ip-range might or
1341          * might not be specified. if specified the interface needs to match the
1342          * ip-range. If no ip-range then the interfaces are
1343          * automatically matched if they are all up.
1344          * If > 1 interfaces all the interfaces must match for the NI to
1345          * be configured.
1346          */
1347         list_for_each_entry_safe(intf_descr, tmp, intf_list, intf_on_network) {
1348                 for (ifaddr = ifa; ifaddr != NULL; ifaddr = ifaddr->ifa_next) {
1349                         if (ifaddr->ifa_addr == NULL)
1350                                 continue;
1351
1352                         family = ifaddr->ifa_addr->sa_family;
1353                         if (family == AF_INET &&
1354                             strcmp(intf_descr->intf_name,
1355                                    ifaddr->ifa_name) == 0)
1356                                 break;
1357                 }
1358
1359                 if (ifaddr == NULL) {
1360                         list_del(&intf_descr->intf_on_network);
1361                         free_intf_descr(intf_descr);
1362                         continue;
1363                 }
1364
1365                 if ((ifaddr->ifa_flags & IFF_UP) == 0) {
1366                         list_del(&intf_descr->intf_on_network);
1367                         free_intf_descr(intf_descr);
1368                         continue;
1369                 }
1370
1371                 ip = ((struct sockaddr_in *)ifaddr->ifa_addr)->sin_addr.s_addr;
1372
1373                 rc = 1;
1374                 list_for_each_entry(ip_range, ip_ranges, ipr_entry) {
1375                         rc = cfs_ip_addr_match(bswap_32(ip), &ip_range->ipr_expr);
1376                         if (rc)
1377                                 break;
1378                 }
1379
1380                 if (!rc) {
1381                         /* no match for this interface */
1382                         list_del(&intf_descr->intf_on_network);
1383                         free_intf_descr(intf_descr);
1384                 }
1385         }
1386
1387         return LUSTRE_CFG_RC_MATCH;
1388 }
1389
1390 static int lustre_lnet_resolve_ip2nets_rule(struct lustre_lnet_ip2nets *ip2nets,
1391                                             lnet_nid_t **nids, __u32 *nnids,
1392                                             char *err_str, size_t str_len)
1393 {
1394         struct ifaddrs *ifa;
1395         int rc = LUSTRE_CFG_RC_NO_ERR;
1396
1397         rc = getifaddrs(&ifa);
1398         if (rc < 0) {
1399                 snprintf(err_str, str_len,
1400                          "\"failed to get interface addresses: %d\"", -errno);
1401                 return -errno;
1402         }
1403
1404         rc = lustre_lnet_match_ip_to_intf(ifa,
1405                                           &ip2nets->ip2nets_net.nw_intflist,
1406                                           &ip2nets->ip2nets_ip_ranges);
1407         if (rc != LUSTRE_CFG_RC_MATCH) {
1408                 snprintf(err_str, str_len,
1409                          "\"couldn't match ip to existing interfaces\"");
1410                 freeifaddrs(ifa);
1411                 return rc;
1412         }
1413
1414         rc = lustre_lnet_intf2nids(&ip2nets->ip2nets_net, nids, nnids,
1415                                    err_str, str_len);
1416         if (rc != LUSTRE_CFG_RC_NO_ERR) {
1417                 *nids = NULL;
1418                 *nnids = 0;
1419         }
1420
1421         freeifaddrs(ifa);
1422
1423         return rc;
1424 }
1425
1426 static int
1427 lustre_lnet_ioctl_config_ni(struct list_head *intf_list,
1428                             struct lnet_ioctl_config_lnd_tunables *tunables,
1429                             struct cfs_expr_list *global_cpts,
1430                             lnet_nid_t *nids, char *err_str)
1431 {
1432         char *data;
1433         struct lnet_ioctl_config_ni *conf;
1434         struct lnet_ioctl_config_lnd_tunables *tun = NULL;
1435         int rc = LUSTRE_CFG_RC_NO_ERR, i = 0;
1436         size_t len;
1437         int count;
1438         struct lnet_dlc_intf_descr *intf_descr;
1439         __u32 *cpt_array;
1440         struct cfs_expr_list *cpt_expr;
1441
1442         list_for_each_entry(intf_descr, intf_list,
1443                             intf_on_network) {
1444                 if (tunables != NULL)
1445                         len = sizeof(struct lnet_ioctl_config_ni) +
1446                               sizeof(struct lnet_ioctl_config_lnd_tunables);
1447                 else
1448                         len = sizeof(struct lnet_ioctl_config_ni);
1449
1450                 data = calloc(1, len);
1451                 if (!data)
1452                         return LUSTRE_CFG_RC_OUT_OF_MEM;
1453                 conf = (struct lnet_ioctl_config_ni*) data;
1454                 if (tunables != NULL)
1455                         tun = (struct lnet_ioctl_config_lnd_tunables*)
1456                                 conf->lic_bulk;
1457
1458                 LIBCFS_IOC_INIT_V2(*conf, lic_cfg_hdr);
1459                 conf->lic_cfg_hdr.ioc_len = len;
1460                 conf->lic_nid = nids[i];
1461                 strncpy(conf->lic_ni_intf, intf_descr->intf_name,
1462                         LNET_MAX_STR_LEN);
1463
1464                 if (intf_descr->cpt_expr != NULL)
1465                         cpt_expr = intf_descr->cpt_expr;
1466                 else if (global_cpts != NULL)
1467                         cpt_expr = global_cpts;
1468                 else
1469                         cpt_expr = NULL;
1470
1471                 if (cpt_expr != NULL) {
1472                         count = cfs_expr_list_values(cpt_expr,
1473                                                      LNET_MAX_SHOW_NUM_CPT,
1474                                                      &cpt_array);
1475                         if (count > 0) {
1476                                 memcpy(conf->lic_cpts, cpt_array,
1477                                        sizeof(cpt_array[0]) * LNET_MAX_STR_LEN);
1478                                 free(cpt_array);
1479                         } else {
1480                                 count = 0;
1481                         }
1482                 } else {
1483                         count = 0;
1484                 }
1485
1486                 conf->lic_ncpts = count;
1487
1488                 if (tunables != NULL)
1489                         memcpy(tun, tunables, sizeof(*tunables));
1490
1491                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_ADD_LOCAL_NI, data);
1492                 if (rc < 0) {
1493                         rc = -errno;
1494                         snprintf(err_str,
1495                                  LNET_MAX_STR_LEN,
1496                                  "\"cannot add network: %s\"", strerror(errno));
1497                         free(data);
1498                         return rc;
1499                 }
1500                 free(data);
1501                 i++;
1502         }
1503
1504         return LUSTRE_CFG_RC_NO_ERR;
1505 }
1506
1507 int
1508 lustre_lnet_config_ip2nets(struct lustre_lnet_ip2nets *ip2nets,
1509                            struct lnet_ioctl_config_lnd_tunables *tunables,
1510                            struct cfs_expr_list *global_cpts,
1511                            int seq_no, struct cYAML **err_rc)
1512 {
1513         lnet_nid_t *nids = NULL;
1514         __u32 nnids = 0;
1515         int rc;
1516         char err_str[LNET_MAX_STR_LEN] = "\"success\"";
1517
1518         if (!ip2nets) {
1519                 snprintf(err_str,
1520                          sizeof(err_str),
1521                          "\"incomplete ip2nets information\"");
1522                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1523                 goto out;
1524         }
1525
1526         /*
1527          * call below function to resolve the rules into a list of nids.
1528          * The memory is allocated in that function then freed here when
1529          * it's no longer needed.
1530          */
1531         rc = lustre_lnet_resolve_ip2nets_rule(ip2nets, &nids, &nnids, err_str,
1532                                               sizeof(err_str));
1533         if (rc != LUSTRE_CFG_RC_NO_ERR && rc != LUSTRE_CFG_RC_MATCH)
1534                 goto out;
1535
1536         if (list_empty(&ip2nets->ip2nets_net.nw_intflist)) {
1537                 snprintf(err_str, sizeof(err_str),
1538                          "\"no interfaces match ip2nets rules\"");
1539                 goto free_nids_out;
1540         }
1541
1542         rc = lustre_lnet_ioctl_config_ni(&ip2nets->ip2nets_net.nw_intflist,
1543                                          tunables, global_cpts, nids,
1544                                          err_str);
1545
1546 free_nids_out:
1547         free(nids);
1548
1549 out:
1550         cYAML_build_error(rc, seq_no, ADD_CMD, "ip2nets", err_str, err_rc);
1551         return rc;
1552 }
1553
1554 int lustre_lnet_config_ni(struct lnet_dlc_network_descr *nw_descr,
1555                           struct cfs_expr_list *global_cpts,
1556                           char *ip2net,
1557                           struct lnet_ioctl_config_lnd_tunables *tunables,
1558                           int seq_no, struct cYAML **err_rc)
1559 {
1560         char *data = NULL;
1561         struct lnet_ioctl_config_ni *conf;
1562         struct lnet_ioctl_config_lnd_tunables *tun = NULL;
1563         char buf[LNET_MAX_STR_LEN];
1564         int rc = LUSTRE_CFG_RC_NO_ERR;
1565         char err_str[LNET_MAX_STR_LEN] = "\"success\"";
1566         lnet_nid_t *nids = NULL;
1567         __u32 nnids = 0;
1568         size_t len;
1569         int count;
1570         struct lnet_dlc_intf_descr *intf_descr, *tmp;
1571         __u32 *cpt_array;
1572
1573         if (ip2net == NULL && (nw_descr == NULL || nw_descr->nw_id == 0 ||
1574             (list_empty(&nw_descr->nw_intflist) &&
1575              LNET_NETTYP(nw_descr->nw_id) != GNILND))) {
1576                 snprintf(err_str,
1577                          sizeof(err_str),
1578                          "\"missing mandatory parameters in NI config: '%s'\"",
1579                          (nw_descr == NULL) ? "network , interface" :
1580                          (nw_descr->nw_id == 0) ? "network" : "interface");
1581                 rc = LUSTRE_CFG_RC_MISSING_PARAM;
1582                 goto out;
1583         }
1584
1585         if (ip2net != NULL && strlen(ip2net) >= sizeof(buf)) {
1586                 snprintf(err_str,
1587                          sizeof(err_str),
1588                          "\"ip2net string too long %d\"",
1589                                 (int)strlen(ip2net));
1590                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
1591                 goto out;
1592         }
1593
1594         if (ip2net != NULL) {
1595                 if (tunables != NULL)
1596                         len = sizeof(struct lnet_ioctl_config_ni) +
1597                               sizeof(struct lnet_ioctl_config_lnd_tunables);
1598                 else
1599                         len = sizeof(struct lnet_ioctl_config_ni);
1600                 data = calloc(1, len);
1601                 if (!data) {
1602                         rc = LUSTRE_CFG_RC_OUT_OF_MEM;
1603                         goto out;
1604                 }
1605                 conf = (struct lnet_ioctl_config_ni*) data;
1606                 if (tunables != NULL)
1607                         tun = (struct lnet_ioctl_config_lnd_tunables*)
1608                                 (data + sizeof(*conf));
1609
1610                 LIBCFS_IOC_INIT_V2(*conf, lic_cfg_hdr);
1611                 conf->lic_cfg_hdr.ioc_len = len;
1612                 strncpy(conf->lic_legacy_ip2nets, ip2net,
1613                         LNET_MAX_STR_LEN);
1614
1615                 if (global_cpts != NULL) {
1616                         count = cfs_expr_list_values(global_cpts,
1617                                                      LNET_MAX_SHOW_NUM_CPT,
1618                                                      &cpt_array);
1619                         if (count > 0) {
1620                                 memcpy(conf->lic_cpts, cpt_array,
1621                                        sizeof(cpt_array[0]) * LNET_MAX_STR_LEN);
1622                                 free(cpt_array);
1623                         } else {
1624                                 count = 0;
1625                         }
1626                 } else {
1627                         count = 0;
1628                 }
1629
1630                 conf->lic_ncpts = count;
1631
1632                 if (tunables != NULL)
1633                         memcpy(tun, tunables, sizeof(*tunables));
1634
1635                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_ADD_LOCAL_NI, data);
1636                 if (rc < 0) {
1637                         rc = -errno;
1638                         snprintf(err_str,
1639                                 sizeof(err_str),
1640                                 "\"cannot add network: %s\"", strerror(errno));
1641                         goto out;
1642                 }
1643
1644                 goto out;
1645         }
1646
1647         if (LNET_NETTYP(nw_descr->nw_id) == LOLND) {
1648                 rc = LUSTRE_CFG_RC_NO_ERR;
1649                 goto out;
1650         }
1651
1652         if (nw_descr->nw_id == LNET_NET_ANY) {
1653                 snprintf(err_str,
1654                         sizeof(err_str),
1655                         "\"cannot parse net '%s'\"",
1656                         libcfs_net2str(nw_descr->nw_id));
1657                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1658                 goto out;
1659         }
1660
1661         /*
1662          * special case the GNI since no interface name is expected
1663          */
1664         if (list_empty(&nw_descr->nw_intflist) &&
1665             (LNET_NETTYP(nw_descr->nw_id) != GNILND)) {
1666                 snprintf(err_str,
1667                         sizeof(err_str),
1668                         "\"no interface name provided\"");
1669                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1670                 goto out;
1671         }
1672
1673         rc = lustre_lnet_intf2nids(nw_descr, &nids, &nnids,
1674                                    err_str, sizeof(err_str));
1675         if (rc != 0) {
1676                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1677                 goto out;
1678         }
1679
1680         rc = lustre_lnet_ioctl_config_ni(&nw_descr->nw_intflist,
1681                                          tunables, global_cpts, nids,
1682                                          err_str);
1683
1684 out:
1685         if (nw_descr != NULL) {
1686                 list_for_each_entry_safe(intf_descr, tmp,
1687                                          &nw_descr->nw_intflist,
1688                                          intf_on_network) {
1689                         list_del(&intf_descr->intf_on_network);
1690                         free_intf_descr(intf_descr);
1691                 }
1692         }
1693
1694         cYAML_build_error(rc, seq_no, ADD_CMD, "net", err_str, err_rc);
1695
1696         if (nids)
1697                 free(nids);
1698
1699         if (data)
1700                 free(data);
1701
1702         return rc;
1703 }
1704
1705 int lustre_lnet_del_ni(struct lnet_dlc_network_descr *nw_descr,
1706                        int seq_no, struct cYAML **err_rc)
1707 {
1708         struct lnet_ioctl_config_ni data;
1709         int rc = LUSTRE_CFG_RC_NO_ERR, i;
1710         char err_str[LNET_MAX_STR_LEN] = "\"success\"";
1711         lnet_nid_t *nids = NULL;
1712         __u32 nnids = 0;
1713         struct lnet_dlc_intf_descr *intf_descr, *tmp;
1714
1715         if (nw_descr == NULL || nw_descr->nw_id == 0) {
1716                 snprintf(err_str,
1717                          sizeof(err_str),
1718                          "\"missing mandatory parameter in deleting NI: '%s'\"",
1719                          (nw_descr == NULL) ? "network , interface" :
1720                          (nw_descr->nw_id == 0) ? "network" : "interface");
1721                 rc = LUSTRE_CFG_RC_MISSING_PARAM;
1722                 goto out;
1723         }
1724
1725         if (LNET_NETTYP(nw_descr->nw_id) == LOLND)
1726                 return LUSTRE_CFG_RC_NO_ERR;
1727
1728         if (nw_descr->nw_id == LNET_NET_ANY) {
1729                 snprintf(err_str,
1730                          sizeof(err_str),
1731                          "\"cannot parse net '%s'\"",
1732                          libcfs_net2str(nw_descr->nw_id));
1733                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1734                 goto out;
1735         }
1736
1737         rc = lustre_lnet_intf2nids(nw_descr, &nids, &nnids,
1738                                    err_str, sizeof(err_str));
1739         if (rc != 0) {
1740                 rc = LUSTRE_CFG_RC_BAD_PARAM;
1741                 goto out;
1742         }
1743
1744         /*
1745          * no interfaces just the nw_id is specified
1746          */
1747         if (nnids == 0) {
1748                 nids = calloc(1, sizeof(*nids));
1749                 if (nids == NULL) {
1750                         snprintf(err_str, sizeof(err_str),
1751                                 "\"out of memory\"");
1752                         rc = LUSTRE_CFG_RC_OUT_OF_MEM;
1753                         goto out;
1754                 }
1755                 nids[0] = LNET_MKNID(nw_descr->nw_id, 0);
1756                 nnids = 1;
1757         }
1758
1759         for (i = 0; i < nnids; i++) {
1760                 LIBCFS_IOC_INIT_V2(data, lic_cfg_hdr);
1761                 data.lic_nid = nids[i];
1762
1763                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_DEL_LOCAL_NI, &data);
1764                 if (rc < 0) {
1765                         rc = -errno;
1766                         snprintf(err_str,
1767                                 sizeof(err_str),
1768                                 "\"cannot del network: %s\"", strerror(errno));
1769                 }
1770         }
1771
1772         list_for_each_entry_safe(intf_descr, tmp, &nw_descr->nw_intflist,
1773                                  intf_on_network) {
1774                 list_del(&intf_descr->intf_on_network);
1775                 free_intf_descr(intf_descr);
1776         }
1777
1778 out:
1779         cYAML_build_error(rc, seq_no, DEL_CMD, "net", err_str, err_rc);
1780
1781         if (nids != NULL)
1782                 free(nids);
1783
1784         return rc;
1785 }
1786
1787 static int
1788 lustre_lnet_config_healthv(int value, bool all, lnet_nid_t nid,
1789                            enum lnet_health_type type, char *name,
1790                            int seq_no, struct cYAML **err_rc)
1791 {
1792         struct lnet_ioctl_reset_health_cfg data;
1793         int rc = LUSTRE_CFG_RC_NO_ERR;
1794         char err_str[LNET_MAX_STR_LEN] = "\"success\"";
1795
1796         LIBCFS_IOC_INIT_V2(data, rh_hdr);
1797         data.rh_type = type;
1798         data.rh_all = all;
1799         data.rh_value = value;
1800         data.rh_nid = nid;
1801
1802         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_SET_HEALHV, &data);
1803         if (rc != 0) {
1804                 rc = -errno;
1805                 snprintf(err_str,
1806                          sizeof(err_str), "Can not configure health value: %s",
1807                          strerror(errno));
1808         }
1809
1810         cYAML_build_error(rc, seq_no, ADD_CMD, name, err_str, err_rc);
1811
1812         return rc;
1813 }
1814
1815 int lustre_lnet_config_ni_healthv(int value, bool all, char *ni_nid, int seq_no,
1816                                   struct cYAML **err_rc)
1817 {
1818         lnet_nid_t nid;
1819         if (ni_nid)
1820                 nid = libcfs_str2nid(ni_nid);
1821         else
1822                 nid = LNET_NID_ANY;
1823         return lustre_lnet_config_healthv(value, all, nid,
1824                                           LNET_HEALTH_TYPE_LOCAL_NI,
1825                                           "ni healthv", seq_no, err_rc);
1826 }
1827
1828 int lustre_lnet_config_peer_ni_healthv(int value, bool all, char *lpni_nid,
1829                                        int seq_no, struct cYAML **err_rc)
1830 {
1831         lnet_nid_t nid;
1832         if (lpni_nid)
1833                 nid = libcfs_str2nid(lpni_nid);
1834         else
1835                 nid = LNET_NID_ANY;
1836         return lustre_lnet_config_healthv(value, all, nid,
1837                                           LNET_HEALTH_TYPE_PEER_NI,
1838                                           "peer_ni healthv", seq_no, err_rc);
1839 }
1840
1841 static bool
1842 add_msg_stats_to_yaml_blk(struct cYAML *yaml,
1843                           struct lnet_ioctl_comm_count *counts)
1844 {
1845         if (cYAML_create_number(yaml, "put",
1846                                 counts->ico_put_count)
1847                                         == NULL)
1848                 return false;
1849         if (cYAML_create_number(yaml, "get",
1850                                 counts->ico_get_count)
1851                                         == NULL)
1852                 return false;
1853         if (cYAML_create_number(yaml, "reply",
1854                                 counts->ico_reply_count)
1855                                         == NULL)
1856                 return false;
1857         if (cYAML_create_number(yaml, "ack",
1858                                 counts->ico_ack_count)
1859                                         == NULL)
1860                 return false;
1861         if (cYAML_create_number(yaml, "hello",
1862                                 counts->ico_hello_count)
1863                                         == NULL)
1864                 return false;
1865
1866         return true;
1867 }
1868
1869 static struct lnet_ioctl_comm_count *
1870 get_counts(struct lnet_ioctl_element_msg_stats *msg_stats, int idx)
1871 {
1872         if (idx == 0)
1873                 return &msg_stats->im_send_stats;
1874         if (idx == 1)
1875                 return &msg_stats->im_recv_stats;
1876         if (idx == 2)
1877                 return &msg_stats->im_drop_stats;
1878
1879         return NULL;
1880 }
1881
1882 static int
1883 create_local_udsp_info(struct lnet_ioctl_construct_udsp_info *udsp_info,
1884                        struct cYAML *net_node)
1885 {
1886         char tmp[LNET_MAX_STR_LEN];
1887         struct cYAML *udsp_net;
1888         bool created = false;
1889         struct cYAML *pref;
1890         int i;
1891
1892         /* add the UDSP info */
1893         udsp_net = cYAML_create_object(net_node, "udsp info");
1894         if (!udsp_net)
1895                 return LUSTRE_CFG_RC_OUT_OF_MEM;
1896
1897         if (!cYAML_create_number(udsp_net, "net priority",
1898                                  (int) udsp_info->cud_net_priority))
1899                 return LUSTRE_CFG_RC_OUT_OF_MEM;
1900
1901         if (!cYAML_create_number(udsp_net, "nid priority",
1902                                  (int)udsp_info->cud_nid_priority))
1903                 return LUSTRE_CFG_RC_OUT_OF_MEM;
1904
1905         pref = udsp_net;
1906
1907         for (i = 0; i < LNET_MAX_SHOW_NUM_NID; i++) {
1908                 memset(tmp, 0, LNET_MAX_STR_LEN);
1909                 if (udsp_info->cud_pref_rtr_nid[i] == 0)
1910                         break;
1911                 if (!created) {
1912                         pref = cYAML_create_object(udsp_net,
1913                                         "Preferred gateway NIDs");
1914                         if (!pref)
1915                                 return LUSTRE_CFG_RC_OUT_OF_MEM;
1916                         created = true;
1917                 }
1918                 snprintf(tmp, sizeof(tmp), "NID-%d", i);
1919                 if (!cYAML_create_string(pref, tmp,
1920                         libcfs_nid2str(udsp_info->cud_pref_rtr_nid[i])))
1921                         return LUSTRE_CFG_RC_OUT_OF_MEM;
1922         }
1923
1924         return LUSTRE_CFG_RC_NO_ERR;
1925 }
1926
1927 static int
1928 create_remote_udsp_info(struct lnet_ioctl_construct_udsp_info *udsp_info,
1929                         struct cYAML *nid_node)
1930 {
1931         char tmp[LNET_MAX_STR_LEN];
1932         struct cYAML *udsp_nid;
1933         bool created = false;
1934         struct cYAML *pref;
1935         int i;
1936
1937         /* add the UDSP info */
1938         udsp_nid = cYAML_create_object(nid_node, "udsp info");
1939         if (!udsp_nid)
1940                 return LUSTRE_CFG_RC_OUT_OF_MEM;
1941
1942         if (!cYAML_create_number(udsp_nid, "net priority",
1943                                  (int) udsp_info->cud_net_priority))
1944                 return LUSTRE_CFG_RC_OUT_OF_MEM;
1945
1946         if (!cYAML_create_number(udsp_nid, "nid priority",
1947                                  (int) udsp_info->cud_nid_priority))
1948                 return LUSTRE_CFG_RC_OUT_OF_MEM;
1949
1950         pref = udsp_nid;
1951         for (i = 0; i < LNET_MAX_SHOW_NUM_NID; i++) {
1952                 memset(tmp, 0, LNET_MAX_STR_LEN);
1953                 if (udsp_info->cud_pref_rtr_nid[i] == 0)
1954                         break;
1955                 if (!created) {
1956                         pref = cYAML_create_object(udsp_nid,
1957                                         "Preferred gateway NIDs");
1958                         if (!pref)
1959                                 return LUSTRE_CFG_RC_OUT_OF_MEM;
1960                         created = true;
1961                 }
1962                 snprintf(tmp, sizeof(tmp), "NID-%d", i);
1963                 if (!cYAML_create_string(pref, tmp,
1964                         libcfs_nid2str(udsp_info->cud_pref_rtr_nid[i])))
1965                         return LUSTRE_CFG_RC_OUT_OF_MEM;
1966         }
1967
1968         pref = udsp_nid;
1969         created = false;
1970         for (i = 0; i < LNET_MAX_SHOW_NUM_NID; i++) {
1971                 memset(tmp, 0, LNET_MAX_STR_LEN);
1972                 if (udsp_info->cud_pref_nid[i] == 0)
1973                         break;
1974                 if (!created) {
1975                         pref = cYAML_create_object(udsp_nid,
1976                                         "Preferred source NIDs");
1977                         if (!pref)
1978                                 return LUSTRE_CFG_RC_OUT_OF_MEM;
1979                         created = true;
1980                 }
1981                 snprintf(tmp, sizeof(tmp), "NID-%d", i);
1982                 if (!cYAML_create_string(pref, tmp,
1983                         libcfs_nid2str(udsp_info->cud_pref_nid[i])))
1984                         return LUSTRE_CFG_RC_OUT_OF_MEM;
1985         }
1986
1987         return LUSTRE_CFG_RC_NO_ERR;
1988 }
1989
1990 int lustre_lnet_show_net(char *nw, int detail, int seq_no,
1991                          struct cYAML **show_rc, struct cYAML **err_rc,
1992                          bool backup)
1993 {
1994         char *buf;
1995         struct lnet_ioctl_config_ni *ni_data;
1996         struct lnet_ioctl_config_lnd_tunables *lnd;
1997         struct lnet_ioctl_element_stats *stats;
1998         struct lnet_ioctl_element_msg_stats msg_stats;
1999         struct lnet_ioctl_local_ni_hstats hstats;
2000         struct lnet_ioctl_construct_udsp_info udsp_info;
2001         __u32 net = LNET_NET_ANY;
2002         __u32 prev_net = LNET_NET_ANY;
2003         int rc = LUSTRE_CFG_RC_OUT_OF_MEM, i, j;
2004         int l_errno = 0;
2005         struct cYAML *root = NULL, *tunables = NULL,
2006                 *net_node = NULL, *interfaces = NULL,
2007                 *item = NULL, *first_seq = NULL,
2008                 *tmp = NULL, *statistics = NULL,
2009                 *yhstats = NULL;
2010         int str_buf_len = LNET_MAX_SHOW_NUM_CPT * 2;
2011         char str_buf[str_buf_len];
2012         char *pos;
2013         char err_str[LNET_MAX_STR_LEN] = "\"out of memory\"";
2014         bool exist = false, new_net = true;
2015         int net_num = 0;
2016         size_t buf_size = sizeof(*ni_data) + sizeof(*lnd) + sizeof(*stats);
2017
2018         buf = calloc(1, buf_size);
2019         if (buf == NULL)
2020                 goto out;
2021
2022         ni_data = (struct lnet_ioctl_config_ni *)buf;
2023
2024         if (nw != NULL) {
2025                 net = libcfs_str2net(nw);
2026                 if (net == LNET_NET_ANY) {
2027                         snprintf(err_str,
2028                                  sizeof(err_str),
2029                                  "\"cannot parse net '%s'\"", nw);
2030                         rc = LUSTRE_CFG_RC_BAD_PARAM;
2031                         goto out;
2032                 }
2033         }
2034
2035         root = cYAML_create_object(NULL, NULL);
2036         if (root == NULL)
2037                 goto out;
2038
2039         net_node = cYAML_create_seq(root, "net");
2040         if (net_node == NULL)
2041                 goto out;
2042
2043         for (i = 0;; i++) {
2044                 __u32 rc_net;
2045
2046                 memset(buf, 0, buf_size);
2047
2048                 LIBCFS_IOC_INIT_V2(*ni_data, lic_cfg_hdr);
2049                 /*
2050                  * set the ioc_len to the proper value since INIT assumes
2051                  * size of data
2052                  */
2053                 ni_data->lic_cfg_hdr.ioc_len = buf_size;
2054                 ni_data->lic_idx = i;
2055
2056                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_LOCAL_NI, ni_data);
2057                 if (rc != 0) {
2058                         l_errno = errno;
2059                         break;
2060                 }
2061
2062                 rc_net = LNET_NIDNET(ni_data->lic_nid);
2063
2064                 /* filter on provided data */
2065                 if (net != LNET_NET_ANY &&
2066                     net != rc_net)
2067                         continue;
2068
2069                 /* if we're backing up don't store lo */
2070                 if (backup && LNET_NETTYP(rc_net) == LOLND)
2071                         continue;
2072
2073                 /* default rc to -1 in case we hit the goto */
2074                 rc = -1;
2075                 exist = true;
2076
2077                 stats = (struct lnet_ioctl_element_stats *)ni_data->lic_bulk;
2078                 lnd = (struct lnet_ioctl_config_lnd_tunables *)
2079                         (ni_data->lic_bulk + sizeof(*stats));
2080
2081                 if (rc_net != prev_net) {
2082                         prev_net = rc_net;
2083                         new_net = true;
2084                         net_num++;
2085                 }
2086
2087                 if (new_net) {
2088                         if (!cYAML_create_string(net_node, "net type",
2089                                                  libcfs_net2str(rc_net)))
2090                                 goto out;
2091
2092                         tmp = cYAML_create_seq(net_node, "local NI(s)");
2093                         if (tmp == NULL)
2094                                 goto out;
2095                         new_net = false;
2096                 }
2097
2098                 /* create the tree to be printed. */
2099                 item = cYAML_create_seq_item(tmp);
2100                 if (item == NULL)
2101                         goto out;
2102
2103                 if (first_seq == NULL)
2104                         first_seq = item;
2105
2106                 if (!backup &&
2107                     cYAML_create_string(item, "nid",
2108                                         libcfs_nid2str(ni_data->lic_nid)) == NULL)
2109                         goto out;
2110
2111                 if (!backup &&
2112                     cYAML_create_string(item,
2113                                         "status",
2114                                         (ni_data->lic_status ==
2115                                           LNET_NI_STATUS_UP) ?
2116                                             "up" : "down") == NULL)
2117                         goto out;
2118
2119                 /* don't add interfaces unless there is at least one
2120                  * interface */
2121                 if (strlen(ni_data->lic_ni_intf) > 0) {
2122                         interfaces = cYAML_create_object(item, "interfaces");
2123                         if (interfaces == NULL)
2124                                 goto out;
2125
2126                         snprintf(str_buf, sizeof(str_buf), "%d", 0);
2127                         if (cYAML_create_string(interfaces, str_buf,
2128                                                 ni_data->lic_ni_intf) == NULL)
2129                                 goto out;
2130                 }
2131
2132                 if (detail) {
2133                         char *limit;
2134                         int k;
2135
2136                         if (backup)
2137                                 goto continue_without_msg_stats;
2138
2139                         statistics = cYAML_create_object(item, "statistics");
2140                         if (statistics == NULL)
2141                                 goto out;
2142
2143                         if (cYAML_create_number(statistics, "send_count",
2144                                                 stats->iel_send_count)
2145                                                         == NULL)
2146                                 goto out;
2147
2148                         if (cYAML_create_number(statistics, "recv_count",
2149                                                 stats->iel_recv_count)
2150                                                         == NULL)
2151                                 goto out;
2152
2153                         if (cYAML_create_number(statistics, "drop_count",
2154                                                 stats->iel_drop_count)
2155                                                         == NULL)
2156                                 goto out;
2157
2158                         if (detail < 4)
2159                                 goto continue_without_udsp_info;
2160
2161                         LIBCFS_IOC_INIT_V2(udsp_info, cud_hdr);
2162                         udsp_info.cud_nid = ni_data->lic_nid;
2163                         udsp_info.cud_peer = false;
2164                         rc = l_ioctl(LNET_DEV_ID,
2165                                      IOC_LIBCFS_GET_CONST_UDSP_INFO,
2166                                      &udsp_info);
2167                         if (rc != 0) {
2168                                 l_errno = errno;
2169                                 goto continue_without_udsp_info;
2170                         }
2171
2172                         rc = create_local_udsp_info(&udsp_info, item);
2173                         if (rc) {
2174                                 l_errno = errno;
2175                                 goto out;
2176                         }
2177
2178 continue_without_udsp_info:
2179                         if (detail < 2)
2180                                 goto continue_without_msg_stats;
2181
2182                         LIBCFS_IOC_INIT_V2(msg_stats, im_hdr);
2183                         msg_stats.im_hdr.ioc_len = sizeof(msg_stats);
2184                         msg_stats.im_idx = i;
2185
2186                         rc = l_ioctl(LNET_DEV_ID,
2187                                      IOC_LIBCFS_GET_LOCAL_NI_MSG_STATS,
2188                                      &msg_stats);
2189                         if (rc != 0) {
2190                                 l_errno = errno;
2191                                 goto continue_without_msg_stats;
2192                         }
2193
2194                         for (k = 0; k < 3; k++) {
2195                                 struct lnet_ioctl_comm_count *counts;
2196                                 struct cYAML *msg_statistics = NULL;
2197
2198                                 msg_statistics = cYAML_create_object(item,
2199                                                  (char *)gmsg_stat_names[k]);
2200                                 if (msg_statistics == NULL)
2201                                         goto out;
2202
2203                                 counts = get_counts(&msg_stats, k);
2204                                 if (counts == NULL)
2205                                         goto out;
2206
2207                                 if (!add_msg_stats_to_yaml_blk(msg_statistics,
2208                                                                counts))
2209                                         goto out;
2210                         }
2211
2212                         LIBCFS_IOC_INIT_V2(hstats, hlni_hdr);
2213                         hstats.hlni_nid = ni_data->lic_nid;
2214                         /* grab health stats */
2215                         rc = l_ioctl(LNET_DEV_ID,
2216                                      IOC_LIBCFS_GET_LOCAL_HSTATS,
2217                                      &hstats);
2218                         if (rc != 0) {
2219                                 l_errno = errno;
2220                                 goto continue_without_msg_stats;
2221                         }
2222                         yhstats = cYAML_create_object(item, "health stats");
2223                         if (!yhstats)
2224                                 goto out;
2225                         if (cYAML_create_number(yhstats, "health value",
2226                                                 hstats.hlni_health_value)
2227                                                         == NULL)
2228                                 goto out;
2229                         if (cYAML_create_number(yhstats, "interrupts",
2230                                                 hstats.hlni_local_interrupt)
2231                                                         == NULL)
2232                                 goto out;
2233                         if (cYAML_create_number(yhstats, "dropped",
2234                                                 hstats.hlni_local_dropped)
2235                                                         == NULL)
2236                                 goto out;
2237                         if (cYAML_create_number(yhstats, "aborted",
2238                                                 hstats.hlni_local_aborted)
2239                                                         == NULL)
2240                                 goto out;
2241                         if (cYAML_create_number(yhstats, "no route",
2242                                                 hstats.hlni_local_no_route)
2243                                                         == NULL)
2244                                 goto out;
2245                         if (cYAML_create_number(yhstats, "timeouts",
2246                                                 hstats.hlni_local_timeout)
2247                                                         == NULL)
2248                                 goto out;
2249                         if (cYAML_create_number(yhstats, "error",
2250                                                 hstats.hlni_local_error)
2251                                                         == NULL)
2252                                 goto out;
2253                         if (cYAML_create_number(yhstats, "ping_count",
2254                                                 hstats.hlni_ping_count)
2255                                                         == NULL)
2256                                 goto out;
2257                         if (cYAML_create_number(yhstats, "next_ping",
2258                                                 hstats.hlni_next_ping)
2259                                                         == NULL)
2260                                 goto out;
2261
2262 continue_without_msg_stats:
2263                         tunables = cYAML_create_object(item, "tunables");
2264                         if (!tunables)
2265                                 goto out;
2266
2267                         rc = lustre_net_show_tunables(tunables, &lnd->lt_cmn);
2268                         if (rc != LUSTRE_CFG_RC_NO_ERR)
2269                                 goto out;
2270
2271                         rc = lustre_ni_show_tunables(tunables, LNET_NETTYP(rc_net),
2272                                                      &lnd->lt_tun);
2273                         if (rc != LUSTRE_CFG_RC_NO_ERR &&
2274                             rc != LUSTRE_CFG_RC_NO_MATCH)
2275                                 goto out;
2276
2277                         if (rc != LUSTRE_CFG_RC_NO_MATCH) {
2278                                 tunables = cYAML_create_object(item,
2279                                                                "lnd tunables");
2280                                 if (tunables == NULL)
2281                                         goto out;
2282                         }
2283
2284                         if (!backup &&
2285                             cYAML_create_number(item, "dev cpt",
2286                                                 ni_data->lic_dev_cpt) == NULL)
2287                                 goto out;
2288
2289                         /* out put the CPTs in the format: "[x,x,x,...]" */
2290                         pos = str_buf;
2291                         limit = str_buf + str_buf_len - 3;
2292                         pos += scnprintf(pos, limit - pos, "\"[");
2293                         for (j = 0 ; ni_data->lic_ncpts >= 1 &&
2294                                 j < ni_data->lic_ncpts &&
2295                                 pos < limit; j++) {
2296                                 pos += scnprintf(pos, limit - pos,
2297                                                  "%d", ni_data->lic_cpts[j]);
2298                                 if ((j + 1) < ni_data->lic_ncpts)
2299                                         pos += scnprintf(pos, limit - pos, ",");
2300                         }
2301                         snprintf(pos, 3, "]\"");
2302
2303                         if (ni_data->lic_ncpts >= 1 &&
2304                             cYAML_create_string(item, "CPT",
2305                                                 str_buf) == NULL)
2306                                 goto out;
2307                 }
2308         }
2309
2310         /* Print out the net information only if show_rc is not provided */
2311         if (show_rc == NULL)
2312                 cYAML_print_tree(root);
2313
2314         if (l_errno != ENOENT) {
2315                 snprintf(err_str,
2316                          sizeof(err_str),
2317                          "\"cannot get networks: %s\"",
2318                          strerror(l_errno));
2319                 rc = -l_errno;
2320                 goto out;
2321         } else
2322                 rc = LUSTRE_CFG_RC_NO_ERR;
2323
2324         snprintf(err_str, sizeof(err_str), "\"success\"");
2325 out:
2326         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR || !exist) {
2327                 cYAML_free_tree(root);
2328         } else if (show_rc != NULL && *show_rc != NULL) {
2329                 struct cYAML *show_node;
2330                 /* find the net node, if one doesn't exist
2331                  * then insert one.  Otherwise add to the one there
2332                  */
2333                 show_node = cYAML_get_object_item(*show_rc, "net");
2334                 if (show_node != NULL && cYAML_is_sequence(show_node)) {
2335                         cYAML_insert_child(show_node, first_seq);
2336                         free(net_node);
2337                         free(root);
2338                 } else if (show_node == NULL) {
2339                         cYAML_insert_sibling((*show_rc)->cy_child,
2340                                                 net_node);
2341                         free(root);
2342                 } else {
2343                         cYAML_free_tree(root);
2344                 }
2345         } else {
2346                 *show_rc = root;
2347         }
2348
2349         cYAML_build_error(rc, seq_no, SHOW_CMD, "net", err_str, err_rc);
2350
2351         return rc;
2352 }
2353
2354 int lustre_lnet_enable_routing(int enable, int seq_no, struct cYAML **err_rc)
2355 {
2356         struct lnet_ioctl_config_data data;
2357         int rc = LUSTRE_CFG_RC_NO_ERR;
2358         char err_str[LNET_MAX_STR_LEN] = "\"success\"";
2359
2360         LIBCFS_IOC_INIT_V2(data, cfg_hdr);
2361         data.cfg_config_u.cfg_buffers.buf_enable = (enable) ? 1 : 0;
2362
2363         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_CONFIG_RTR, &data);
2364         if (rc != 0) {
2365                 rc = -errno;
2366                 snprintf(err_str,
2367                          sizeof(err_str),
2368                          "\"cannot %s routing %s\"",
2369                          (enable) ? "enable" : "disable", strerror(errno));
2370                 goto out;
2371         }
2372
2373 out:
2374         cYAML_build_error(rc, seq_no,
2375                          (enable) ? ADD_CMD : DEL_CMD,
2376                          "routing", err_str, err_rc);
2377
2378         return rc;
2379 }
2380
2381 int ioctl_set_value(__u32 val, int ioc, char *name,
2382                     int seq_no, struct cYAML **err_rc)
2383 {
2384         struct lnet_ioctl_set_value data;
2385         int rc = LUSTRE_CFG_RC_NO_ERR;
2386         char err_str[LNET_MAX_STR_LEN] = "\"success\"";
2387
2388         LIBCFS_IOC_INIT_V2(data, sv_hdr);
2389         data.sv_value = val;
2390
2391         rc = l_ioctl(LNET_DEV_ID, ioc , &data);
2392         if (rc != 0) {
2393                 rc = -errno;
2394                 snprintf(err_str,
2395                          sizeof(err_str),
2396                          "\"cannot configure %s to %d: %s\"", name,
2397                          val, strerror(errno));
2398         }
2399
2400         cYAML_build_error(rc, seq_no, ADD_CMD, name, err_str, err_rc);
2401
2402         return rc;
2403 }
2404
2405 int lustre_lnet_config_recov_intrv(int intrv, int seq_no, struct cYAML **err_rc)
2406 {
2407         int rc = LUSTRE_CFG_RC_NO_ERR;
2408         char err_str[LNET_MAX_STR_LEN] = "\"success\"";
2409         char val[LNET_MAX_STR_LEN];
2410
2411         snprintf(val, sizeof(val), "%d", intrv);
2412
2413         rc = write_sysfs_file(modparam_path, "lnet_recovery_interval", val,
2414                               1, strlen(val) + 1);
2415         if (rc)
2416                 snprintf(err_str, sizeof(err_str),
2417                          "\"cannot configure recovery interval: %s\"",
2418                          strerror(errno));
2419
2420         cYAML_build_error(rc, seq_no, ADD_CMD, "recovery_interval", err_str, err_rc);
2421
2422         return rc;
2423 }
2424
2425 int lustre_lnet_config_rtr_sensitivity(int sen, int seq_no, struct cYAML **err_rc)
2426 {
2427         int rc = LUSTRE_CFG_RC_NO_ERR;
2428         char err_str[LNET_MAX_STR_LEN] = "\"success\"";
2429         char val[LNET_MAX_STR_LEN];
2430
2431         snprintf(val, sizeof(val), "%d", sen);
2432
2433         rc = write_sysfs_file(modparam_path, "router_sensitivity_percentage", val,
2434                               1, strlen(val) + 1);
2435         if (rc)
2436                 snprintf(err_str, sizeof(err_str),
2437                          "\"cannot configure router health sensitivity: %s\"",
2438                          strerror(errno));
2439
2440         cYAML_build_error(rc, seq_no, ADD_CMD, "router_sensitivity", err_str, err_rc);
2441
2442         return rc;
2443 }
2444
2445 int lustre_lnet_config_hsensitivity(int sen, int seq_no, struct cYAML **err_rc)
2446 {
2447         int rc = LUSTRE_CFG_RC_NO_ERR;
2448         char err_str[LNET_MAX_STR_LEN] = "\"success\"";
2449         char val[LNET_MAX_STR_LEN];
2450
2451         snprintf(val, sizeof(val), "%d", sen);
2452
2453         rc = write_sysfs_file(modparam_path, "lnet_health_sensitivity", val,
2454                               1, strlen(val) + 1);
2455         if (rc)
2456                 snprintf(err_str, sizeof(err_str),
2457                          "\"cannot configure health sensitivity: %s\"",
2458                          strerror(errno));
2459
2460         cYAML_build_error(rc, seq_no, ADD_CMD, "health_sensitivity", err_str, err_rc);
2461
2462         return rc;
2463 }
2464
2465 int lustre_lnet_config_transaction_to(int timeout, int seq_no, struct cYAML **err_rc)
2466 {
2467         int rc = LUSTRE_CFG_RC_NO_ERR;
2468         char err_str[LNET_MAX_STR_LEN] = "\"success\"";
2469         char val[LNET_MAX_STR_LEN];
2470
2471         snprintf(val, sizeof(val), "%d", timeout);
2472
2473         rc = write_sysfs_file(modparam_path, "lnet_transaction_timeout", val,
2474                               1, strlen(val) + 1);
2475         if (rc)
2476                 snprintf(err_str, sizeof(err_str),
2477                          "\"cannot configure transaction timeout: %s\"",
2478                          strerror(errno));
2479
2480         cYAML_build_error(rc, seq_no, ADD_CMD, "transaction_timeout", err_str, err_rc);
2481
2482         return rc;
2483 }
2484
2485 int lustre_lnet_config_retry_count(int count, int seq_no, struct cYAML **err_rc)
2486 {
2487         int rc = LUSTRE_CFG_RC_NO_ERR;
2488         char err_str[LNET_MAX_STR_LEN] = "\"success\"";
2489         char val[LNET_MAX_STR_LEN];
2490
2491         snprintf(val, sizeof(val), "%d", count);
2492
2493         rc = write_sysfs_file(modparam_path, "lnet_retry_count", val,
2494                               1, strlen(val) + 1);
2495         if (rc)
2496                 snprintf(err_str, sizeof(err_str),
2497                          "\"cannot configure retry count: %s\"",
2498                          strerror(errno));
2499
2500         cYAML_build_error(rc, seq_no, ADD_CMD, "retry_count", err_str, err_rc);
2501
2502         return rc;
2503 }
2504
2505 int lustre_lnet_config_response_tracking(int val, int seq_no,
2506                                          struct cYAML **err_rc)
2507 {
2508         int rc = LUSTRE_CFG_RC_NO_ERR;
2509         char err_str[LNET_MAX_STR_LEN];
2510         char val_str[LNET_MAX_STR_LEN];
2511
2512         if (val < 0 || val > 3) {
2513                 rc = LUSTRE_CFG_RC_BAD_PARAM;
2514                 snprintf(err_str, sizeof(err_str),
2515                          "\"Valid values are: 0, 1, 2, or 3\"");
2516         } else {
2517                 snprintf(err_str, sizeof(err_str), "\"success\"");
2518
2519                 snprintf(val_str, sizeof(val_str), "%d", val);
2520
2521                 rc = write_sysfs_file(modparam_path, "lnet_response_tracking",
2522                                       val_str, 1, strlen(val_str) + 1);
2523                 if (rc)
2524                         snprintf(err_str, sizeof(err_str),
2525                                  "\"cannot configure response tracking: %s\"",
2526                                  strerror(errno));
2527         }
2528
2529         cYAML_build_error(rc, seq_no, ADD_CMD, "response_tracking", err_str,
2530                           err_rc);
2531
2532         return rc;
2533 }
2534
2535 int lustre_lnet_config_recovery_limit(int val, int seq_no,
2536                                       struct cYAML **err_rc)
2537 {
2538         int rc = LUSTRE_CFG_RC_NO_ERR;
2539         char err_str[LNET_MAX_STR_LEN];
2540         char val_str[LNET_MAX_STR_LEN];
2541
2542         if (val < 0) {
2543                 rc = LUSTRE_CFG_RC_BAD_PARAM;
2544                 snprintf(err_str, sizeof(err_str),
2545                          "\"Must be greater than or equal to 0\"");
2546         } else {
2547                 snprintf(err_str, sizeof(err_str), "\"success\"");
2548
2549                 snprintf(val_str, sizeof(val_str), "%d", val);
2550
2551                 rc = write_sysfs_file(modparam_path, "lnet_recovery_limit",
2552                                       val_str, 1, strlen(val_str) + 1);
2553                 if (rc)
2554                         snprintf(err_str, sizeof(err_str),
2555                                  "\"cannot configure recovery limit: %s\"",
2556                                  strerror(errno));
2557         }
2558
2559         cYAML_build_error(rc, seq_no, ADD_CMD, "recovery_limit", err_str,
2560                           err_rc);
2561
2562         return rc;
2563 }
2564
2565 int lustre_lnet_config_max_intf(int max, int seq_no, struct cYAML **err_rc)
2566 {
2567         int rc = LUSTRE_CFG_RC_NO_ERR;
2568         char err_str[LNET_MAX_STR_LEN] = "\"success\"";
2569         char val[LNET_MAX_STR_LEN];
2570
2571         snprintf(val, sizeof(val), "%d", max);
2572
2573         rc = write_sysfs_file(modparam_path, "lnet_interfaces_max", val,
2574                               1, strlen(val) + 1);
2575         if (rc)
2576                 snprintf(err_str, sizeof(err_str),
2577                          "\"cannot configure max interfaces: %s\"",
2578                          strerror(errno));
2579
2580         cYAML_build_error(rc, seq_no, ADD_CMD, "max_interfaces", err_str, err_rc);
2581
2582         return rc;
2583 }
2584
2585 int lustre_lnet_config_discovery(int enable, int seq_no, struct cYAML **err_rc)
2586 {
2587         int rc = LUSTRE_CFG_RC_NO_ERR;
2588         char err_str[LNET_MAX_STR_LEN] = "\"success\"";
2589         char val[LNET_MAX_STR_LEN];
2590
2591         snprintf(val, sizeof(val), "%u", (enable) ? 0 : 1);
2592
2593         rc = write_sysfs_file(modparam_path, "lnet_peer_discovery_disabled", val,
2594                               1, strlen(val) + 1);
2595         if (rc)
2596                 snprintf(err_str, sizeof(err_str),
2597                          "\"cannot configure discovery: %s\"",
2598                          strerror(errno));
2599
2600         cYAML_build_error(rc, seq_no, ADD_CMD, "discovery", err_str, err_rc);
2601
2602         return rc;
2603
2604 }
2605
2606 int lustre_lnet_config_drop_asym_route(int drop, int seq_no,
2607                                        struct cYAML **err_rc)
2608 {
2609         int rc = LUSTRE_CFG_RC_NO_ERR;
2610         char err_str[LNET_MAX_STR_LEN] = "\"success\"";
2611         char val[LNET_MAX_STR_LEN];
2612
2613         snprintf(val, sizeof(val), "%u", (drop) ? 1 : 0);
2614
2615         rc = write_sysfs_file(modparam_path, "lnet_drop_asym_route", val,
2616                               1, strlen(val) + 1);
2617         if (rc)
2618                 snprintf(err_str, sizeof(err_str),
2619                          "\"cannot configure drop asym route: %s\"",
2620                          strerror(errno));
2621
2622         cYAML_build_error(rc, seq_no, ADD_CMD, "drop_asym_route",
2623                           err_str, err_rc);
2624
2625         return rc;
2626
2627 }
2628
2629 int lustre_lnet_config_numa_range(int range, int seq_no, struct cYAML **err_rc)
2630 {
2631         return ioctl_set_value(range, IOC_LIBCFS_SET_NUMA_RANGE,
2632                                "numa_range", seq_no, err_rc);
2633 }
2634
2635 int lustre_lnet_config_buffers(int tiny, int small, int large, int seq_no,
2636                                struct cYAML **err_rc)
2637 {
2638         struct lnet_ioctl_config_data data;
2639         int rc = LUSTRE_CFG_RC_NO_ERR;
2640         char err_str[LNET_MAX_STR_LEN] = "\"success\"";
2641
2642         /* -1 indicates to ignore changes to this field */
2643         if (tiny < -1 || small < -1 || large < -1) {
2644                 snprintf(err_str,
2645                          sizeof(err_str),
2646                          "\"tiny, small and large must be >= 0\"");
2647                 rc = LUSTRE_CFG_RC_OUT_OF_RANGE_PARAM;
2648                 goto out;
2649         }
2650
2651         LIBCFS_IOC_INIT_V2(data, cfg_hdr);
2652         data.cfg_config_u.cfg_buffers.buf_tiny = tiny;
2653         data.cfg_config_u.cfg_buffers.buf_small = small;
2654         data.cfg_config_u.cfg_buffers.buf_large = large;
2655
2656         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_ADD_BUF, &data);
2657         if (rc != 0) {
2658                 rc = -errno;
2659                 snprintf(err_str,
2660                          sizeof(err_str),
2661                          "\"cannot configure buffers: %s\"", strerror(errno));
2662                 goto out;
2663         }
2664
2665 out:
2666         cYAML_build_error(rc, seq_no, ADD_CMD, "buf", err_str, err_rc);
2667
2668         return rc;
2669 }
2670
2671 int lustre_lnet_show_routing(int seq_no, struct cYAML **show_rc,
2672                              struct cYAML **err_rc, bool backup)
2673 {
2674         struct lnet_ioctl_config_data *data;
2675         struct lnet_ioctl_pool_cfg *pool_cfg = NULL;
2676         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
2677         int l_errno = 0;
2678         char *buf;
2679         char *pools[LNET_NRBPOOLS] = {"tiny", "small", "large"};
2680         int buf_count[LNET_NRBPOOLS] = {0};
2681         struct cYAML *root = NULL, *pools_node = NULL,
2682                      *type_node = NULL, *item = NULL, *cpt = NULL,
2683                      *first_seq = NULL, *buffers = NULL;
2684         int i, j;
2685         char err_str[LNET_MAX_STR_LEN] = "\"out of memory\"";
2686         char node_name[LNET_MAX_STR_LEN];
2687         bool exist = false;
2688
2689         buf = calloc(1, sizeof(*data) + sizeof(*pool_cfg));
2690         if (buf == NULL)
2691                 goto out;
2692
2693         data = (struct lnet_ioctl_config_data *)buf;
2694
2695         root = cYAML_create_object(NULL, NULL);
2696         if (root == NULL)
2697                 goto out;
2698
2699         if (backup)
2700                 pools_node = cYAML_create_object(root, "routing");
2701         else
2702                 pools_node = cYAML_create_seq(root, "routing");
2703         if (pools_node == NULL)
2704                 goto out;
2705
2706         for (i = 0;; i++) {
2707                 LIBCFS_IOC_INIT_V2(*data, cfg_hdr);
2708                 data->cfg_hdr.ioc_len = sizeof(struct lnet_ioctl_config_data) +
2709                                         sizeof(struct lnet_ioctl_pool_cfg);
2710                 data->cfg_count = i;
2711
2712                 rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_BUF, data);
2713                 if (rc != 0) {
2714                         l_errno = errno;
2715                         break;
2716                 }
2717
2718                 exist = true;
2719
2720                 pool_cfg = (struct lnet_ioctl_pool_cfg *)data->cfg_bulk;
2721
2722                 if (backup)
2723                         goto calculate_buffers;
2724
2725                 snprintf(node_name, sizeof(node_name), "cpt[%d]", i);
2726                 item = cYAML_create_seq_item(pools_node);
2727                 if (item == NULL)
2728                         goto out;
2729
2730                 if (first_seq == NULL)
2731                         first_seq = item;
2732
2733                 cpt = cYAML_create_object(item, node_name);
2734                 if (cpt == NULL)
2735                         goto out;
2736
2737 calculate_buffers:
2738                 /* create the tree  and print */
2739                 for (j = 0; j < LNET_NRBPOOLS; j++) {
2740                         if (!backup) {
2741                                 type_node = cYAML_create_object(cpt, pools[j]);
2742                                 if (type_node == NULL)
2743                                         goto out;
2744                         }
2745                         if (!backup &&
2746                             cYAML_create_number(type_node, "npages",
2747                                                 pool_cfg->pl_pools[j].pl_npages)
2748                             == NULL)
2749                                 goto out;
2750                         if (!backup &&
2751                             cYAML_create_number(type_node, "nbuffers",
2752                                                 pool_cfg->pl_pools[j].
2753                                                   pl_nbuffers) == NULL)
2754                                 goto out;
2755                         if (!backup &&
2756                             cYAML_create_number(type_node, "credits",
2757                                                 pool_cfg->pl_pools[j].
2758                                                    pl_credits) == NULL)
2759                                 goto out;
2760                         if (!backup &&
2761                             cYAML_create_number(type_node, "mincredits",
2762                                                 pool_cfg->pl_pools[j].
2763                                                    pl_mincredits) == NULL)
2764                                 goto out;
2765                         /* keep track of the total count for each of the
2766                          * tiny, small and large buffers */
2767                         buf_count[j] += pool_cfg->pl_pools[j].pl_nbuffers;
2768                 }
2769         }
2770
2771         if (pool_cfg != NULL) {
2772                 if (backup) {
2773                         if (cYAML_create_number(pools_node, "enable",
2774                                                 pool_cfg->pl_routing) ==
2775                         NULL)
2776                                 goto out;
2777
2778                         goto add_buffer_section;
2779                 }
2780
2781                 item = cYAML_create_seq_item(pools_node);
2782                 if (item == NULL)
2783                         goto out;
2784
2785                 if (cYAML_create_number(item, "enable", pool_cfg->pl_routing) ==
2786                     NULL)
2787                         goto out;
2788         }
2789
2790 add_buffer_section:
2791         /* create a buffers entry in the show. This is necessary so that
2792          * if the YAML output is used to configure a node, the buffer
2793          * configuration takes hold */
2794         buffers = cYAML_create_object(root, "buffers");
2795         if (buffers == NULL)
2796                 goto out;
2797
2798         for (i = 0; i < LNET_NRBPOOLS; i++) {
2799                 if (cYAML_create_number(buffers, pools[i], buf_count[i]) == NULL)
2800                         goto out;
2801         }
2802
2803         if (show_rc == NULL)
2804                 cYAML_print_tree(root);
2805
2806         if (l_errno != ENOENT) {
2807                 snprintf(err_str,
2808                          sizeof(err_str),
2809                          "\"cannot get routing information: %s\"",
2810                          strerror(l_errno));
2811                 rc = -l_errno;
2812                 goto out;
2813         } else
2814                 rc = LUSTRE_CFG_RC_NO_ERR;
2815
2816         snprintf(err_str, sizeof(err_str), "\"success\"");
2817         rc = LUSTRE_CFG_RC_NO_ERR;
2818
2819 out:
2820         free(buf);
2821         if (show_rc == NULL || rc != LUSTRE_CFG_RC_NO_ERR || !exist) {
2822                 cYAML_free_tree(root);
2823         } else if (show_rc != NULL && *show_rc != NULL) {
2824                 struct cYAML *routing_node;
2825                 /* there should exist only one routing block and one
2826                  * buffers block. If there already exists a previous one
2827                  * then don't add another */
2828                 routing_node = cYAML_get_object_item(*show_rc, "routing");
2829                 if (routing_node == NULL) {
2830                         cYAML_insert_sibling((*show_rc)->cy_child,
2831                                                 root->cy_child);
2832                         free(root);
2833                 } else {
2834                         cYAML_free_tree(root);
2835                 }
2836         } else {
2837                 *show_rc = root;
2838         }
2839
2840         cYAML_build_error(rc, seq_no, SHOW_CMD, "routing", err_str, err_rc);
2841
2842         return rc;
2843 }
2844
2845 int lustre_lnet_show_peer(char *knid, int detail, int seq_no,
2846                           struct cYAML **show_rc, struct cYAML **err_rc,
2847                           bool backup)
2848 {
2849         /*
2850          * TODO: This function is changing in a future patch to accommodate
2851          * PEER_LIST and proper filtering on any nid of the peer
2852          */
2853         struct lnet_ioctl_peer_cfg peer_info;
2854         struct lnet_peer_ni_credit_info *lpni_cri;
2855         struct lnet_ioctl_element_stats *lpni_stats;
2856         struct lnet_ioctl_element_msg_stats *msg_stats;
2857         struct lnet_ioctl_peer_ni_hstats *hstats;
2858         struct lnet_ioctl_construct_udsp_info udsp_info;
2859         lnet_nid_t *nidp;
2860         int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
2861         int i, j, k;
2862         int l_errno = 0;
2863         __u32 count;
2864         __u32 size;
2865         struct cYAML *root = NULL, *peer = NULL, *peer_ni = NULL,
2866                      *first_seq = NULL, *peer_root = NULL, *tmp = NULL,
2867                      *msg_statistics = NULL, *statistics = NULL,
2868                      *yhstats;
2869         char err_str[LNET_MAX_STR_LEN] = "\"out of memory\"";
2870         struct lnet_process_id *list = NULL;
2871         void *data = NULL;
2872         void *lpni_data;
2873         bool exist = false;
2874
2875         /* create struct cYAML root object */
2876         root = cYAML_create_object(NULL, NULL);
2877         if (root == NULL)
2878                 goto out;
2879
2880         peer_root = cYAML_create_seq(root, "peer");
2881         if (peer_root == NULL)
2882                 goto out;
2883
2884         count = 1000;
2885         size = count * sizeof(struct lnet_process_id);
2886         list = malloc(size);
2887         if (list == NULL) {
2888                 l_errno = ENOMEM;
2889                 goto out;
2890         }
2891         if (knid != NULL) {
2892                 list[0].nid = libcfs_str2nid(knid);
2893                 count = 1;
2894         } else {
2895                 for (;;) {
2896                         memset(&peer_info, 0, sizeof(peer_info));
2897                         LIBCFS_IOC_INIT_V2(peer_info, prcfg_hdr);
2898                         peer_info.prcfg_hdr.ioc_len = sizeof(peer_info);
2899                         peer_info.prcfg_size = size;
2900                         peer_info.prcfg_bulk = list;
2901
2902                         l_errno = 0;
2903                         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_PEER_LIST,
2904                                      &peer_info);
2905                         count = peer_info.prcfg_count;
2906                         if (rc == 0)
2907                                 break;
2908                         l_errno = errno;
2909                         if (l_errno != E2BIG) {
2910                                 snprintf(err_str,
2911                                         sizeof(err_str),
2912                                         "\"cannot get peer list: %s\"",
2913                                         strerror(l_errno));
2914                                 rc = -l_errno;
2915                                 goto out;
2916                         }
2917                         free(list);
2918                         size = peer_info.prcfg_size;
2919                         list = malloc(size);
2920                         if (list == NULL) {
2921                                 l_errno = ENOMEM;
2922                                 goto out;
2923                         }
2924                 }
2925         }
2926
2927         size = 4096;
2928         data = malloc(size);
2929         if (data == NULL) {
2930                 l_errno = ENOMEM;
2931                 goto out;
2932         }
2933
2934         for (i = 0; i < count; i++) {
2935                 for (;;) {
2936                         memset(&peer_info, 0, sizeof(peer_info));
2937                         LIBCFS_IOC_INIT_V2(peer_info, prcfg_hdr);
2938                         peer_info.prcfg_hdr.ioc_len = sizeof(peer_info);
2939                         peer_info.prcfg_prim_nid = list[i].nid;
2940                         peer_info.prcfg_size = size;
2941                         peer_info.prcfg_bulk = data;
2942
2943                         l_errno = 0;
2944                         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_GET_PEER_NI,
2945                                      &peer_info);
2946                         if (rc == 0)
2947                                 break;
2948                         l_errno = errno;
2949                         if (l_errno != E2BIG) {
2950                                 snprintf(err_str,
2951                                         sizeof(err_str),
2952                                         "\"cannot get peer information: %s\"",
2953                                         strerror(l_errno));
2954                                 rc = -l_errno;
2955                                 goto out;
2956                         }
2957                         free(data);
2958                         size = peer_info.prcfg_size;
2959                         data = malloc(size);
2960                         if (data == NULL) {
2961                                 l_errno = ENOMEM;
2962                                 goto out;
2963                         }
2964     &