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37#define DEBUG_SUBSYSTEM S_LNET
38#include "../../include/linux/lnet/lib-lnet.h"
39
40typedef struct {
41 struct list_head ltb_list;
42 int ltb_size;
43 char ltb_text[0];
44} lnet_text_buf_t;
45
46static int lnet_tbnob;
47#define LNET_MAX_TEXTBUF_NOB (64<<10)
48#define LNET_SINGLE_TEXTBUF_NOB (4<<10)
49
50static void
51lnet_syntax(char *name, char *str, int offset, int width)
52{
53 static char dots[LNET_SINGLE_TEXTBUF_NOB];
54 static char dashes[LNET_SINGLE_TEXTBUF_NOB];
55
56 memset(dots, '.', sizeof(dots));
57 dots[sizeof(dots)-1] = 0;
58 memset(dashes, '-', sizeof(dashes));
59 dashes[sizeof(dashes)-1] = 0;
60
61 LCONSOLE_ERROR_MSG(0x10f, "Error parsing '%s=\"%s\"'\n", name, str);
62 LCONSOLE_ERROR_MSG(0x110, "here...........%.*s..%.*s|%.*s|\n",
63 (int)strlen(name), dots, offset, dots,
64 (width < 1) ? 0 : width - 1, dashes);
65}
66
67static int
68lnet_issep(char c)
69{
70 switch (c) {
71 case '\n':
72 case '\r':
73 case ';':
74 return 1;
75 default:
76 return 0;
77 }
78}
79
80static int
81lnet_net_unique(__u32 net, struct list_head *nilist)
82{
83 struct list_head *tmp;
84 lnet_ni_t *ni;
85
86 list_for_each(tmp, nilist) {
87 ni = list_entry(tmp, lnet_ni_t, ni_list);
88
89 if (LNET_NIDNET(ni->ni_nid) == net)
90 return 0;
91 }
92
93 return 1;
94}
95
96void
97lnet_ni_free(struct lnet_ni *ni)
98{
99 if (ni->ni_refs != NULL)
100 cfs_percpt_free(ni->ni_refs);
101
102 if (ni->ni_tx_queues != NULL)
103 cfs_percpt_free(ni->ni_tx_queues);
104
105 if (ni->ni_cpts != NULL)
106 cfs_expr_list_values_free(ni->ni_cpts, ni->ni_ncpts);
107
108 LIBCFS_FREE(ni, sizeof(*ni));
109}
110
111static lnet_ni_t *
112lnet_ni_alloc(__u32 net, struct cfs_expr_list *el, struct list_head *nilist)
113{
114 struct lnet_tx_queue *tq;
115 struct lnet_ni *ni;
116 int rc;
117 int i;
118
119 if (!lnet_net_unique(net, nilist)) {
120 LCONSOLE_ERROR_MSG(0x111, "Duplicate network specified: %s\n",
121 libcfs_net2str(net));
122 return NULL;
123 }
124
125 LIBCFS_ALLOC(ni, sizeof(*ni));
126 if (ni == NULL) {
127 CERROR("Out of memory creating network %s\n",
128 libcfs_net2str(net));
129 return NULL;
130 }
131
132 spin_lock_init(&ni->ni_lock);
133 INIT_LIST_HEAD(&ni->ni_cptlist);
134 ni->ni_refs = cfs_percpt_alloc(lnet_cpt_table(),
135 sizeof(*ni->ni_refs[0]));
136 if (ni->ni_refs == NULL)
137 goto failed;
138
139 ni->ni_tx_queues = cfs_percpt_alloc(lnet_cpt_table(),
140 sizeof(*ni->ni_tx_queues[0]));
141 if (ni->ni_tx_queues == NULL)
142 goto failed;
143
144 cfs_percpt_for_each(tq, i, ni->ni_tx_queues)
145 INIT_LIST_HEAD(&tq->tq_delayed);
146
147 if (el == NULL) {
148 ni->ni_cpts = NULL;
149 ni->ni_ncpts = LNET_CPT_NUMBER;
150 } else {
151 rc = cfs_expr_list_values(el, LNET_CPT_NUMBER, &ni->ni_cpts);
152 if (rc <= 0) {
153 CERROR("Failed to set CPTs for NI %s: %d\n",
154 libcfs_net2str(net), rc);
155 goto failed;
156 }
157
158 LASSERT(rc <= LNET_CPT_NUMBER);
159 if (rc == LNET_CPT_NUMBER) {
160 LIBCFS_FREE(ni->ni_cpts, rc * sizeof(ni->ni_cpts[0]));
161 ni->ni_cpts = NULL;
162 }
163
164 ni->ni_ncpts = rc;
165 }
166
167
168 ni->ni_nid = LNET_MKNID(net, 0);
169 ni->ni_last_alive = get_seconds();
170 list_add_tail(&ni->ni_list, nilist);
171 return ni;
172 failed:
173 lnet_ni_free(ni);
174 return NULL;
175}
176
177int
178lnet_parse_networks(struct list_head *nilist, char *networks)
179{
180 struct cfs_expr_list *el = NULL;
181 int tokensize = strlen(networks) + 1;
182 char *tokens;
183 char *str;
184 char *tmp;
185 struct lnet_ni *ni;
186 __u32 net;
187 int nnets = 0;
188
189 if (strlen(networks) > LNET_SINGLE_TEXTBUF_NOB) {
190
191 LCONSOLE_ERROR_MSG(0x112,
192 "Can't parse networks: string too long\n");
193 return -EINVAL;
194 }
195
196 LIBCFS_ALLOC(tokens, tokensize);
197 if (tokens == NULL) {
198 CERROR("Can't allocate net tokens\n");
199 return -ENOMEM;
200 }
201
202 the_lnet.ln_network_tokens = tokens;
203 the_lnet.ln_network_tokens_nob = tokensize;
204 memcpy(tokens, networks, tokensize);
205 str = tmp = tokens;
206
207
208 ni = lnet_ni_alloc(LNET_MKNET(LOLND, 0), NULL, nilist);
209 if (ni == NULL)
210 goto failed;
211
212 while (str != NULL && *str != 0) {
213 char *comma = strchr(str, ',');
214 char *bracket = strchr(str, '(');
215 char *square = strchr(str, '[');
216 char *iface;
217 int niface;
218 int rc;
219
220
221
222
223 if (square != NULL && (comma == NULL || square < comma)) {
224
225
226 if (bracket != NULL && bracket > square) {
227 tmp = square;
228 goto failed_syntax;
229 }
230
231 tmp = strchr(square, ']');
232 if (tmp == NULL) {
233 tmp = square;
234 goto failed_syntax;
235 }
236
237 rc = cfs_expr_list_parse(square, tmp - square + 1,
238 0, LNET_CPT_NUMBER - 1, &el);
239 if (rc != 0) {
240 tmp = square;
241 goto failed_syntax;
242 }
243
244 while (square <= tmp)
245 *square++ = ' ';
246 }
247
248 if (bracket == NULL ||
249 (comma != NULL && comma < bracket)) {
250
251
252
253 if (comma != NULL)
254 *comma++ = 0;
255 net = libcfs_str2net(cfs_trimwhite(str));
256
257 if (net == LNET_NIDNET(LNET_NID_ANY)) {
258 LCONSOLE_ERROR_MSG(0x113,
259 "Unrecognised network type\n");
260 tmp = str;
261 goto failed_syntax;
262 }
263
264 if (LNET_NETTYP(net) != LOLND &&
265 lnet_ni_alloc(net, el, nilist) == NULL)
266 goto failed;
267
268 if (el != NULL) {
269 cfs_expr_list_free(el);
270 el = NULL;
271 }
272
273 str = comma;
274 continue;
275 }
276
277 *bracket = 0;
278 net = libcfs_str2net(cfs_trimwhite(str));
279 if (net == LNET_NIDNET(LNET_NID_ANY)) {
280 tmp = str;
281 goto failed_syntax;
282 }
283
284 nnets++;
285 ni = lnet_ni_alloc(net, el, nilist);
286 if (ni == NULL)
287 goto failed;
288
289 if (el != NULL) {
290 cfs_expr_list_free(el);
291 el = NULL;
292 }
293
294 niface = 0;
295 iface = bracket + 1;
296
297 bracket = strchr(iface, ')');
298 if (bracket == NULL) {
299 tmp = iface;
300 goto failed_syntax;
301 }
302
303 *bracket = 0;
304 do {
305 comma = strchr(iface, ',');
306 if (comma != NULL)
307 *comma++ = 0;
308
309 iface = cfs_trimwhite(iface);
310 if (*iface == 0) {
311 tmp = iface;
312 goto failed_syntax;
313 }
314
315 if (niface == LNET_MAX_INTERFACES) {
316 LCONSOLE_ERROR_MSG(0x115,
317 "Too many interfaces for net %s\n",
318 libcfs_net2str(net));
319 goto failed;
320 }
321
322 ni->ni_interfaces[niface++] = iface;
323 iface = comma;
324 } while (iface != NULL);
325
326 str = bracket + 1;
327 comma = strchr(bracket + 1, ',');
328 if (comma != NULL) {
329 *comma = 0;
330 str = cfs_trimwhite(str);
331 if (*str != 0) {
332 tmp = str;
333 goto failed_syntax;
334 }
335 str = comma + 1;
336 continue;
337 }
338
339 str = cfs_trimwhite(str);
340 if (*str != 0) {
341 tmp = str;
342 goto failed_syntax;
343 }
344 }
345
346 LASSERT(!list_empty(nilist));
347 return 0;
348
349 failed_syntax:
350 lnet_syntax("networks", networks, (int)(tmp - tokens), strlen(tmp));
351 failed:
352 while (!list_empty(nilist)) {
353 ni = list_entry(nilist->next, lnet_ni_t, ni_list);
354
355 list_del(&ni->ni_list);
356 lnet_ni_free(ni);
357 }
358
359 if (el != NULL)
360 cfs_expr_list_free(el);
361
362 LIBCFS_FREE(tokens, tokensize);
363 the_lnet.ln_network_tokens = NULL;
364
365 return -EINVAL;
366}
367
368static lnet_text_buf_t *
369lnet_new_text_buf(int str_len)
370{
371 lnet_text_buf_t *ltb;
372 int nob;
373
374
375 nob = offsetof(lnet_text_buf_t, ltb_text[str_len + 1]);
376 if (nob > LNET_SINGLE_TEXTBUF_NOB) {
377
378 CERROR("text buffer too big\n");
379 return NULL;
380 }
381
382 if (lnet_tbnob + nob > LNET_MAX_TEXTBUF_NOB) {
383 CERROR("Too many text buffers\n");
384 return NULL;
385 }
386
387 LIBCFS_ALLOC(ltb, nob);
388 if (ltb == NULL)
389 return NULL;
390
391 ltb->ltb_size = nob;
392 ltb->ltb_text[0] = 0;
393 lnet_tbnob += nob;
394 return ltb;
395}
396
397static void
398lnet_free_text_buf(lnet_text_buf_t *ltb)
399{
400 lnet_tbnob -= ltb->ltb_size;
401 LIBCFS_FREE(ltb, ltb->ltb_size);
402}
403
404static void
405lnet_free_text_bufs(struct list_head *tbs)
406{
407 lnet_text_buf_t *ltb;
408
409 while (!list_empty(tbs)) {
410 ltb = list_entry(tbs->next, lnet_text_buf_t, ltb_list);
411
412 list_del(<b->ltb_list);
413 lnet_free_text_buf(ltb);
414 }
415}
416
417static int
418lnet_str2tbs_sep(struct list_head *tbs, char *str)
419{
420 struct list_head pending;
421 char *sep;
422 int nob;
423 int i;
424 lnet_text_buf_t *ltb;
425
426 INIT_LIST_HEAD(&pending);
427
428
429 for (;;) {
430
431 while (isspace(*str))
432 str++;
433
434
435 for (sep = str; *sep != 0; sep++)
436 if (lnet_issep(*sep) || *sep == '#')
437 break;
438
439 nob = (int)(sep - str);
440 if (nob > 0) {
441 ltb = lnet_new_text_buf(nob);
442 if (ltb == NULL) {
443 lnet_free_text_bufs(&pending);
444 return -1;
445 }
446
447 for (i = 0; i < nob; i++)
448 if (isspace(str[i]))
449 ltb->ltb_text[i] = ' ';
450 else
451 ltb->ltb_text[i] = str[i];
452
453 ltb->ltb_text[nob] = 0;
454
455 list_add_tail(<b->ltb_list, &pending);
456 }
457
458 if (*sep == '#') {
459
460 do {
461 sep++;
462 } while (*sep != 0 && !lnet_issep(*sep));
463 }
464
465 if (*sep == 0)
466 break;
467
468 str = sep + 1;
469 }
470
471 list_splice(&pending, tbs->prev);
472 return 0;
473}
474
475static int
476lnet_expand1tb(struct list_head *list,
477 char *str, char *sep1, char *sep2,
478 char *item, int itemlen)
479{
480 int len1 = (int)(sep1 - str);
481 int len2 = strlen(sep2 + 1);
482 lnet_text_buf_t *ltb;
483
484 LASSERT(*sep1 == '[');
485 LASSERT(*sep2 == ']');
486
487 ltb = lnet_new_text_buf(len1 + itemlen + len2);
488 if (ltb == NULL)
489 return -ENOMEM;
490
491 memcpy(ltb->ltb_text, str, len1);
492 memcpy(<b->ltb_text[len1], item, itemlen);
493 memcpy(<b->ltb_text[len1+itemlen], sep2 + 1, len2);
494 ltb->ltb_text[len1 + itemlen + len2] = 0;
495
496 list_add_tail(<b->ltb_list, list);
497 return 0;
498}
499
500static int
501lnet_str2tbs_expand(struct list_head *tbs, char *str)
502{
503 char num[16];
504 struct list_head pending;
505 char *sep;
506 char *sep2;
507 char *parsed;
508 char *enditem;
509 int lo;
510 int hi;
511 int stride;
512 int i;
513 int nob;
514 int scanned;
515
516 INIT_LIST_HEAD(&pending);
517
518 sep = strchr(str, '[');
519 if (sep == NULL)
520 return 0;
521
522 sep2 = strchr(sep, ']');
523 if (sep2 == NULL)
524 goto failed;
525
526 for (parsed = sep; parsed < sep2; parsed = enditem) {
527
528 enditem = ++parsed;
529 while (enditem < sep2 && *enditem != ',')
530 enditem++;
531
532 if (enditem == parsed)
533 goto failed;
534
535 if (sscanf(parsed, "%d-%d/%d%n", &lo, &hi, &stride, &scanned) < 3) {
536
537 if (sscanf(parsed, "%d-%d%n", &lo, &hi, &scanned) < 2) {
538
539
540 if (lnet_expand1tb(&pending, str, sep, sep2,
541 parsed, (int)(enditem - parsed)) != 0)
542 goto failed;
543
544 continue;
545 }
546
547 stride = 1;
548 }
549
550
551
552 if (enditem != parsed + scanned)
553 goto failed;
554
555 if (hi < 0 || lo < 0 || stride < 0 || hi < lo ||
556 (hi - lo) % stride != 0)
557 goto failed;
558
559 for (i = lo; i <= hi; i += stride) {
560
561 snprintf(num, sizeof(num), "%d", i);
562 nob = strlen(num);
563 if (nob + 1 == sizeof(num))
564 goto failed;
565
566 if (lnet_expand1tb(&pending, str, sep, sep2,
567 num, nob) != 0)
568 goto failed;
569 }
570 }
571
572 list_splice(&pending, tbs->prev);
573 return 1;
574
575 failed:
576 lnet_free_text_bufs(&pending);
577 return -1;
578}
579
580static int
581lnet_parse_hops(char *str, unsigned int *hops)
582{
583 int len = strlen(str);
584 int nob = len;
585
586 return (sscanf(str, "%u%n", hops, &nob) >= 1 &&
587 nob == len &&
588 *hops > 0 && *hops < 256);
589}
590
591#define LNET_PRIORITY_SEPARATOR (':')
592
593static int
594lnet_parse_priority(char *str, unsigned int *priority, char **token)
595{
596 int nob;
597 char *sep;
598 int len;
599
600 sep = strchr(str, LNET_PRIORITY_SEPARATOR);
601 if (sep == NULL) {
602 *priority = 0;
603 return 0;
604 }
605 len = strlen(sep + 1);
606
607 if ((sscanf((sep+1), "%u%n", priority, &nob) < 1) || (len != nob)) {
608
609
610 *token += sep - str + 1;
611 return -1;
612 }
613
614 CDEBUG(D_NET, "gateway %s, priority %d, nob %d\n", str, *priority, nob);
615
616
617
618
619 *sep = '\0';
620 return 0;
621}
622
623static int
624lnet_parse_route(char *str, int *im_a_router)
625{
626
627 static char cmd[LNET_SINGLE_TEXTBUF_NOB];
628
629 struct list_head nets;
630 struct list_head gateways;
631 struct list_head *tmp1;
632 struct list_head *tmp2;
633 __u32 net;
634 lnet_nid_t nid;
635 lnet_text_buf_t *ltb;
636 int rc;
637 char *sep;
638 char *token = str;
639 int ntokens = 0;
640 int myrc = -1;
641 unsigned int hops;
642 int got_hops = 0;
643 unsigned int priority = 0;
644
645 INIT_LIST_HEAD(&gateways);
646 INIT_LIST_HEAD(&nets);
647
648
649 strncpy(cmd, str, sizeof(cmd) - 1);
650 cmd[sizeof(cmd) - 1] = 0;
651
652 sep = str;
653 for (;;) {
654
655 while (isspace(*sep))
656 sep++;
657 if (*sep == 0) {
658 if (ntokens < (got_hops ? 3 : 2))
659 goto token_error;
660 break;
661 }
662
663 ntokens++;
664 token = sep++;
665
666
667 while (*sep != 0 && !isspace(*sep))
668 sep++;
669 if (*sep != 0)
670 *sep++ = 0;
671
672 if (ntokens == 1) {
673 tmp2 = &nets;
674 } else if (ntokens == 2 &&
675 lnet_parse_hops(token, &hops)) {
676 got_hops = 1;
677 continue;
678 } else {
679 tmp2 = &gateways;
680 }
681
682 ltb = lnet_new_text_buf(strlen(token));
683 if (ltb == NULL)
684 goto out;
685
686 strcpy(ltb->ltb_text, token);
687 tmp1 = <b->ltb_list;
688 list_add_tail(tmp1, tmp2);
689
690 while (tmp1 != tmp2) {
691 ltb = list_entry(tmp1, lnet_text_buf_t, ltb_list);
692
693 rc = lnet_str2tbs_expand(tmp1->next, ltb->ltb_text);
694 if (rc < 0)
695 goto token_error;
696
697 tmp1 = tmp1->next;
698
699 if (rc > 0) {
700 list_del(<b->ltb_list);
701 lnet_free_text_buf(ltb);
702 continue;
703 }
704
705 if (ntokens == 1) {
706 net = libcfs_str2net(ltb->ltb_text);
707 if (net == LNET_NIDNET(LNET_NID_ANY) ||
708 LNET_NETTYP(net) == LOLND)
709 goto token_error;
710 } else {
711 rc = lnet_parse_priority(ltb->ltb_text,
712 &priority, &token);
713 if (rc < 0)
714 goto token_error;
715
716 nid = libcfs_str2nid(ltb->ltb_text);
717 if (nid == LNET_NID_ANY ||
718 LNET_NETTYP(LNET_NIDNET(nid)) == LOLND)
719 goto token_error;
720 }
721 }
722 }
723
724 if (!got_hops)
725 hops = 1;
726
727 LASSERT(!list_empty(&nets));
728 LASSERT(!list_empty(&gateways));
729
730 list_for_each(tmp1, &nets) {
731 ltb = list_entry(tmp1, lnet_text_buf_t, ltb_list);
732 net = libcfs_str2net(ltb->ltb_text);
733 LASSERT(net != LNET_NIDNET(LNET_NID_ANY));
734
735 list_for_each(tmp2, &gateways) {
736 ltb = list_entry(tmp2, lnet_text_buf_t, ltb_list);
737 nid = libcfs_str2nid(ltb->ltb_text);
738 LASSERT(nid != LNET_NID_ANY);
739
740 if (lnet_islocalnid(nid)) {
741 *im_a_router = 1;
742 continue;
743 }
744
745 rc = lnet_add_route(net, hops, nid, priority);
746 if (rc != 0) {
747 CERROR("Can't create route to %s via %s\n",
748 libcfs_net2str(net),
749 libcfs_nid2str(nid));
750 goto out;
751 }
752 }
753 }
754
755 myrc = 0;
756 goto out;
757
758 token_error:
759 lnet_syntax("routes", cmd, (int)(token - str), strlen(token));
760 out:
761 lnet_free_text_bufs(&nets);
762 lnet_free_text_bufs(&gateways);
763 return myrc;
764}
765
766static int
767lnet_parse_route_tbs(struct list_head *tbs, int *im_a_router)
768{
769 lnet_text_buf_t *ltb;
770
771 while (!list_empty(tbs)) {
772 ltb = list_entry(tbs->next, lnet_text_buf_t, ltb_list);
773
774 if (lnet_parse_route(ltb->ltb_text, im_a_router) < 0) {
775 lnet_free_text_bufs(tbs);
776 return -EINVAL;
777 }
778
779 list_del(<b->ltb_list);
780 lnet_free_text_buf(ltb);
781 }
782
783 return 0;
784}
785
786int
787lnet_parse_routes(char *routes, int *im_a_router)
788{
789 struct list_head tbs;
790 int rc = 0;
791
792 *im_a_router = 0;
793
794 INIT_LIST_HEAD(&tbs);
795
796 if (lnet_str2tbs_sep(&tbs, routes) < 0) {
797 CERROR("Error parsing routes\n");
798 rc = -EINVAL;
799 } else {
800 rc = lnet_parse_route_tbs(&tbs, im_a_router);
801 }
802
803 LASSERT(lnet_tbnob == 0);
804 return rc;
805}
806
807static int
808lnet_match_network_token(char *token, int len, __u32 *ipaddrs, int nip)
809{
810 LIST_HEAD(list);
811 int rc;
812 int i;
813
814 rc = cfs_ip_addr_parse(token, len, &list);
815 if (rc != 0)
816 return rc;
817
818 for (rc = i = 0; !rc && i < nip; i++)
819 rc = cfs_ip_addr_match(ipaddrs[i], &list);
820
821 cfs_ip_addr_free(&list);
822
823 return rc;
824}
825
826static int
827lnet_match_network_tokens(char *net_entry, __u32 *ipaddrs, int nip)
828{
829 static char tokens[LNET_SINGLE_TEXTBUF_NOB];
830
831 int matched = 0;
832 int ntokens = 0;
833 int len;
834 char *net = NULL;
835 char *sep;
836 char *token;
837 int rc;
838
839 LASSERT(strlen(net_entry) < sizeof(tokens));
840
841
842 strcpy(tokens, net_entry);
843 sep = tokens;
844 for (;;) {
845
846 while (isspace(*sep))
847 sep++;
848 if (*sep == 0)
849 break;
850
851 token = sep++;
852
853
854 while (*sep != 0 && !isspace(*sep))
855 sep++;
856 if (*sep != 0)
857 *sep++ = 0;
858
859 if (ntokens++ == 0) {
860 net = token;
861 continue;
862 }
863
864 len = strlen(token);
865
866 rc = lnet_match_network_token(token, len, ipaddrs, nip);
867 if (rc < 0) {
868 lnet_syntax("ip2nets", net_entry,
869 (int)(token - tokens), len);
870 return rc;
871 }
872
873 matched |= (rc != 0);
874 }
875
876 if (!matched)
877 return 0;
878
879 strcpy(net_entry, net);
880 return 1;
881}
882
883static __u32
884lnet_netspec2net(char *netspec)
885{
886 char *bracket = strchr(netspec, '(');
887 __u32 net;
888
889 if (bracket != NULL)
890 *bracket = 0;
891
892 net = libcfs_str2net(netspec);
893
894 if (bracket != NULL)
895 *bracket = '(';
896
897 return net;
898}
899
900static int
901lnet_splitnets(char *source, struct list_head *nets)
902{
903 int offset = 0;
904 int offset2;
905 int len;
906 lnet_text_buf_t *tb;
907 lnet_text_buf_t *tb2;
908 struct list_head *t;
909 char *sep;
910 char *bracket;
911 __u32 net;
912
913 LASSERT(!list_empty(nets));
914 LASSERT(nets->next == nets->prev);
915
916 tb = list_entry(nets->next, lnet_text_buf_t, ltb_list);
917
918 for (;;) {
919 sep = strchr(tb->ltb_text, ',');
920 bracket = strchr(tb->ltb_text, '(');
921
922 if (sep != NULL &&
923 bracket != NULL &&
924 bracket < sep) {
925
926
927 offset2 = offset + (int)(bracket - tb->ltb_text);
928 len = strlen(bracket);
929
930 bracket = strchr(bracket + 1, ')');
931
932 if (bracket == NULL ||
933 !(bracket[1] == ',' || bracket[1] == 0)) {
934 lnet_syntax("ip2nets", source, offset2, len);
935 return -EINVAL;
936 }
937
938 sep = (bracket[1] == 0) ? NULL : bracket + 1;
939 }
940
941 if (sep != NULL)
942 *sep++ = 0;
943
944 net = lnet_netspec2net(tb->ltb_text);
945 if (net == LNET_NIDNET(LNET_NID_ANY)) {
946 lnet_syntax("ip2nets", source, offset,
947 strlen(tb->ltb_text));
948 return -EINVAL;
949 }
950
951 list_for_each(t, nets) {
952 tb2 = list_entry(t, lnet_text_buf_t, ltb_list);
953
954 if (tb2 == tb)
955 continue;
956
957 if (net == lnet_netspec2net(tb2->ltb_text)) {
958
959 lnet_syntax("ip2nets", source, offset,
960 strlen(tb->ltb_text));
961 return -EINVAL;
962 }
963 }
964
965 if (sep == NULL)
966 return 0;
967
968 offset += (int)(sep - tb->ltb_text);
969 tb2 = lnet_new_text_buf(strlen(sep));
970 if (tb2 == NULL)
971 return -ENOMEM;
972
973 strcpy(tb2->ltb_text, sep);
974 list_add_tail(&tb2->ltb_list, nets);
975
976 tb = tb2;
977 }
978}
979
980static int
981lnet_match_networks(char **networksp, char *ip2nets, __u32 *ipaddrs, int nip)
982{
983 static char networks[LNET_SINGLE_TEXTBUF_NOB];
984 static char source[LNET_SINGLE_TEXTBUF_NOB];
985
986 struct list_head raw_entries;
987 struct list_head matched_nets;
988 struct list_head current_nets;
989 struct list_head *t;
990 struct list_head *t2;
991 lnet_text_buf_t *tb;
992 lnet_text_buf_t *tb2;
993 __u32 net1;
994 __u32 net2;
995 int len;
996 int count;
997 int dup;
998 int rc;
999
1000 INIT_LIST_HEAD(&raw_entries);
1001 if (lnet_str2tbs_sep(&raw_entries, ip2nets) < 0) {
1002 CERROR("Error parsing ip2nets\n");
1003 LASSERT(lnet_tbnob == 0);
1004 return -EINVAL;
1005 }
1006
1007 INIT_LIST_HEAD(&matched_nets);
1008 INIT_LIST_HEAD(¤t_nets);
1009 networks[0] = 0;
1010 count = 0;
1011 len = 0;
1012 rc = 0;
1013
1014 while (!list_empty(&raw_entries)) {
1015 tb = list_entry(raw_entries.next, lnet_text_buf_t,
1016 ltb_list);
1017
1018 strncpy(source, tb->ltb_text, sizeof(source)-1);
1019 source[sizeof(source)-1] = 0;
1020
1021
1022 rc = lnet_match_network_tokens(tb->ltb_text, ipaddrs, nip);
1023 if (rc < 0)
1024 break;
1025
1026 list_del(&tb->ltb_list);
1027
1028 if (rc == 0) {
1029 lnet_free_text_buf(tb);
1030 continue;
1031 }
1032
1033
1034 INIT_LIST_HEAD(¤t_nets);
1035 list_add(&tb->ltb_list, ¤t_nets);
1036 rc = lnet_splitnets(source, ¤t_nets);
1037 if (rc < 0)
1038 break;
1039
1040 dup = 0;
1041 list_for_each(t, ¤t_nets) {
1042 tb = list_entry(t, lnet_text_buf_t, ltb_list);
1043 net1 = lnet_netspec2net(tb->ltb_text);
1044 LASSERT(net1 != LNET_NIDNET(LNET_NID_ANY));
1045
1046 list_for_each(t2, &matched_nets) {
1047 tb2 = list_entry(t2, lnet_text_buf_t,
1048 ltb_list);
1049 net2 = lnet_netspec2net(tb2->ltb_text);
1050 LASSERT(net2 != LNET_NIDNET(LNET_NID_ANY));
1051
1052 if (net1 == net2) {
1053 dup = 1;
1054 break;
1055 }
1056 }
1057
1058 if (dup)
1059 break;
1060 }
1061
1062 if (dup) {
1063 lnet_free_text_bufs(¤t_nets);
1064 continue;
1065 }
1066
1067 list_for_each_safe(t, t2, ¤t_nets) {
1068 tb = list_entry(t, lnet_text_buf_t, ltb_list);
1069
1070 list_del(&tb->ltb_list);
1071 list_add_tail(&tb->ltb_list, &matched_nets);
1072
1073 len += snprintf(networks + len, sizeof(networks) - len,
1074 "%s%s", (len == 0) ? "" : ",",
1075 tb->ltb_text);
1076
1077 if (len >= sizeof(networks)) {
1078 CERROR("Too many matched networks\n");
1079 rc = -E2BIG;
1080 goto out;
1081 }
1082 }
1083
1084 count++;
1085 }
1086
1087 out:
1088 lnet_free_text_bufs(&raw_entries);
1089 lnet_free_text_bufs(&matched_nets);
1090 lnet_free_text_bufs(¤t_nets);
1091 LASSERT(lnet_tbnob == 0);
1092
1093 if (rc < 0)
1094 return rc;
1095
1096 *networksp = networks;
1097 return count;
1098}
1099
1100static void
1101lnet_ipaddr_free_enumeration(__u32 *ipaddrs, int nip)
1102{
1103 LIBCFS_FREE(ipaddrs, nip * sizeof(*ipaddrs));
1104}
1105
1106static int
1107lnet_ipaddr_enumerate(__u32 **ipaddrsp)
1108{
1109 int up;
1110 __u32 netmask;
1111 __u32 *ipaddrs;
1112 __u32 *ipaddrs2;
1113 int nip;
1114 char **ifnames;
1115 int nif = libcfs_ipif_enumerate(&ifnames);
1116 int i;
1117 int rc;
1118
1119 if (nif <= 0)
1120 return nif;
1121
1122 LIBCFS_ALLOC(ipaddrs, nif * sizeof(*ipaddrs));
1123 if (ipaddrs == NULL) {
1124 CERROR("Can't allocate ipaddrs[%d]\n", nif);
1125 libcfs_ipif_free_enumeration(ifnames, nif);
1126 return -ENOMEM;
1127 }
1128
1129 for (i = nip = 0; i < nif; i++) {
1130 if (!strcmp(ifnames[i], "lo"))
1131 continue;
1132
1133 rc = libcfs_ipif_query(ifnames[i], &up,
1134 &ipaddrs[nip], &netmask);
1135 if (rc != 0) {
1136 CWARN("Can't query interface %s: %d\n",
1137 ifnames[i], rc);
1138 continue;
1139 }
1140
1141 if (!up) {
1142 CWARN("Ignoring interface %s: it's down\n",
1143 ifnames[i]);
1144 continue;
1145 }
1146
1147 nip++;
1148 }
1149
1150 libcfs_ipif_free_enumeration(ifnames, nif);
1151
1152 if (nip == nif) {
1153 *ipaddrsp = ipaddrs;
1154 } else {
1155 if (nip > 0) {
1156 LIBCFS_ALLOC(ipaddrs2, nip * sizeof(*ipaddrs2));
1157 if (ipaddrs2 == NULL) {
1158 CERROR("Can't allocate ipaddrs[%d]\n", nip);
1159 nip = -ENOMEM;
1160 } else {
1161 memcpy(ipaddrs2, ipaddrs,
1162 nip * sizeof(*ipaddrs));
1163 *ipaddrsp = ipaddrs2;
1164 rc = nip;
1165 }
1166 }
1167 lnet_ipaddr_free_enumeration(ipaddrs, nif);
1168 }
1169 return nip;
1170}
1171
1172int
1173lnet_parse_ip2nets(char **networksp, char *ip2nets)
1174{
1175 __u32 *ipaddrs = NULL;
1176 int nip = lnet_ipaddr_enumerate(&ipaddrs);
1177 int rc;
1178
1179 if (nip < 0) {
1180 LCONSOLE_ERROR_MSG(0x117,
1181 "Error %d enumerating local IP interfaces for ip2nets to match\n",
1182 nip);
1183 return nip;
1184 }
1185
1186 if (nip == 0) {
1187 LCONSOLE_ERROR_MSG(0x118,
1188 "No local IP interfaces for ip2nets to match\n");
1189 return -ENOENT;
1190 }
1191
1192 rc = lnet_match_networks(networksp, ip2nets, ipaddrs, nip);
1193 lnet_ipaddr_free_enumeration(ipaddrs, nip);
1194
1195 if (rc < 0) {
1196 LCONSOLE_ERROR_MSG(0x119, "Error %d parsing ip2nets\n", rc);
1197 return rc;
1198 }
1199
1200 if (rc == 0) {
1201 LCONSOLE_ERROR_MSG(0x11a,
1202 "ip2nets does not match any local IP interfaces\n");
1203 return -ENOENT;
1204 }
1205
1206 return 0;
1207}
1208
1209int
1210lnet_set_ip_niaddr(lnet_ni_t *ni)
1211{
1212 __u32 net = LNET_NIDNET(ni->ni_nid);
1213 char **names;
1214 int n;
1215 __u32 ip;
1216 __u32 netmask;
1217 int up;
1218 int i;
1219 int rc;
1220
1221
1222
1223
1224 if (ni->ni_interfaces[0] != NULL) {
1225
1226 CLASSERT(LNET_MAX_INTERFACES > 1);
1227
1228 if (ni->ni_interfaces[1] != NULL) {
1229 CERROR("Net %s doesn't support multiple interfaces\n",
1230 libcfs_net2str(net));
1231 return -EPERM;
1232 }
1233
1234 rc = libcfs_ipif_query(ni->ni_interfaces[0],
1235 &up, &ip, &netmask);
1236 if (rc != 0) {
1237 CERROR("Net %s can't query interface %s: %d\n",
1238 libcfs_net2str(net), ni->ni_interfaces[0], rc);
1239 return -EPERM;
1240 }
1241
1242 if (!up) {
1243 CERROR("Net %s can't use interface %s: it's down\n",
1244 libcfs_net2str(net), ni->ni_interfaces[0]);
1245 return -ENETDOWN;
1246 }
1247
1248 ni->ni_nid = LNET_MKNID(net, ip);
1249 return 0;
1250 }
1251
1252 n = libcfs_ipif_enumerate(&names);
1253 if (n <= 0) {
1254 CERROR("Net %s can't enumerate interfaces: %d\n",
1255 libcfs_net2str(net), n);
1256 return 0;
1257 }
1258
1259 for (i = 0; i < n; i++) {
1260 if (!strcmp(names[i], "lo"))
1261 continue;
1262
1263 rc = libcfs_ipif_query(names[i], &up, &ip, &netmask);
1264
1265 if (rc != 0) {
1266 CWARN("Net %s can't query interface %s: %d\n",
1267 libcfs_net2str(net), names[i], rc);
1268 continue;
1269 }
1270
1271 if (!up) {
1272 CWARN("Net %s ignoring interface %s (down)\n",
1273 libcfs_net2str(net), names[i]);
1274 continue;
1275 }
1276
1277 libcfs_ipif_free_enumeration(names, n);
1278 ni->ni_nid = LNET_MKNID(net, ip);
1279 return 0;
1280 }
1281
1282 CERROR("Net %s can't find any interfaces\n", libcfs_net2str(net));
1283 libcfs_ipif_free_enumeration(names, n);
1284 return -ENOENT;
1285}
1286EXPORT_SYMBOL(lnet_set_ip_niaddr);
1287
