forked from FRRouting/frr
-
Notifications
You must be signed in to change notification settings - Fork 2
/
Copy pathisis_te.c
1207 lines (1012 loc) · 32.3 KB
/
isis_te.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*
* IS-IS Rout(e)ing protocol - isis_te.c
*
* This is an implementation of RFC5305 & RFC 7810
*
* Copyright (C) 2014 Orange Labs
* http://www.orange.com
*
* This file is part of GNU Zebra.
*
* GNU Zebra is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* GNU Zebra is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; see the file COPYING; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <zebra.h>
#include <math.h>
#include "linklist.h"
#include "thread.h"
#include "vty.h"
#include "stream.h"
#include "memory.h"
#include "log.h"
#include "prefix.h"
#include "command.h"
#include "hash.h"
#include "if.h"
#include "vrf.h"
#include "checksum.h"
#include "md5.h"
#include "sockunion.h"
#include "network.h"
#include "sbuf.h"
#include "isisd/isis_constants.h"
#include "isisd/isis_common.h"
#include "isisd/isis_flags.h"
#include "isisd/isis_circuit.h"
#include "isisd/isisd.h"
#include "isisd/isis_lsp.h"
#include "isisd/isis_pdu.h"
#include "isisd/isis_dynhn.h"
#include "isisd/isis_misc.h"
#include "isisd/isis_csm.h"
#include "isisd/isis_adjacency.h"
#include "isisd/isis_spf.h"
#include "isisd/isis_te.h"
const char *mode2text[] = {"Disable", "Area", "AS", "Emulate"};
/*------------------------------------------------------------------------*
* Followings are control functions for MPLS-TE parameters management.
*------------------------------------------------------------------------*/
/* Create new MPLS TE Circuit context */
struct mpls_te_circuit *mpls_te_circuit_new(void)
{
struct mpls_te_circuit *mtc;
zlog_debug("ISIS MPLS-TE: Create new MPLS TE Circuit context");
mtc = XCALLOC(MTYPE_ISIS_MPLS_TE, sizeof(struct mpls_te_circuit));
mtc->status = disable;
mtc->type = STD_TE;
mtc->length = 0;
return mtc;
}
/* Copy SUB TLVs parameters into a buffer - No space verification are performed
*/
/* Caller must verify before that there is enough free space in the buffer */
uint8_t add_te_subtlvs(uint8_t *buf, struct mpls_te_circuit *mtc)
{
uint8_t size, *tlvs = buf;
zlog_debug("ISIS MPLS-TE: Add TE Sub TLVs to buffer");
if (mtc == NULL) {
zlog_debug(
"ISIS MPLS-TE: Abort! No MPLS TE Circuit available has been specified");
return 0;
}
/* Create buffer if not provided */
if (buf == NULL) {
zlog_debug("ISIS MPLS-TE: Abort! No Buffer has been specified");
return 0;
}
/* TE_SUBTLV_ADMIN_GRP */
if (SUBTLV_TYPE(mtc->admin_grp) != 0) {
size = SUBTLV_SIZE(&(mtc->admin_grp.header));
memcpy(tlvs, &(mtc->admin_grp), size);
tlvs += size;
}
/* TE_SUBTLV_LLRI */
if (SUBTLV_TYPE(mtc->llri) != 0) {
size = SUBTLV_SIZE(&(mtc->llri.header));
memcpy(tlvs, &(mtc->llri), size);
tlvs += size;
}
/* TE_SUBTLV_LCLIF_IPADDR */
if (SUBTLV_TYPE(mtc->local_ipaddr) != 0) {
size = SUBTLV_SIZE(&(mtc->local_ipaddr.header));
memcpy(tlvs, &(mtc->local_ipaddr), size);
tlvs += size;
}
/* TE_SUBTLV_RMTIF_IPADDR */
if (SUBTLV_TYPE(mtc->rmt_ipaddr) != 0) {
size = SUBTLV_SIZE(&(mtc->rmt_ipaddr.header));
memcpy(tlvs, &(mtc->rmt_ipaddr), size);
tlvs += size;
}
/* TE_SUBTLV_MAX_BW */
if (SUBTLV_TYPE(mtc->max_bw) != 0) {
size = SUBTLV_SIZE(&(mtc->max_bw.header));
memcpy(tlvs, &(mtc->max_bw), size);
tlvs += size;
}
/* TE_SUBTLV_MAX_RSV_BW */
if (SUBTLV_TYPE(mtc->max_rsv_bw) != 0) {
size = SUBTLV_SIZE(&(mtc->max_rsv_bw.header));
memcpy(tlvs, &(mtc->max_rsv_bw), size);
tlvs += size;
}
/* TE_SUBTLV_UNRSV_BW */
if (SUBTLV_TYPE(mtc->unrsv_bw) != 0) {
size = SUBTLV_SIZE(&(mtc->unrsv_bw.header));
memcpy(tlvs, &(mtc->unrsv_bw), size);
tlvs += size;
}
/* TE_SUBTLV_TE_METRIC */
if (SUBTLV_TYPE(mtc->te_metric) != 0) {
size = SUBTLV_SIZE(&(mtc->te_metric.header));
memcpy(tlvs, &(mtc->te_metric), size);
tlvs += size;
}
/* TE_SUBTLV_AV_DELAY */
if (SUBTLV_TYPE(mtc->av_delay) != 0) {
size = SUBTLV_SIZE(&(mtc->av_delay.header));
memcpy(tlvs, &(mtc->av_delay), size);
tlvs += size;
}
/* TE_SUBTLV_MM_DELAY */
if (SUBTLV_TYPE(mtc->mm_delay) != 0) {
size = SUBTLV_SIZE(&(mtc->mm_delay.header));
memcpy(tlvs, &(mtc->mm_delay), size);
tlvs += size;
}
/* TE_SUBTLV_DELAY_VAR */
if (SUBTLV_TYPE(mtc->delay_var) != 0) {
size = SUBTLV_SIZE(&(mtc->delay_var.header));
memcpy(tlvs, &(mtc->delay_var), size);
tlvs += size;
}
/* TE_SUBTLV_PKT_LOSS */
if (SUBTLV_TYPE(mtc->pkt_loss) != 0) {
size = SUBTLV_SIZE(&(mtc->pkt_loss.header));
memcpy(tlvs, &(mtc->pkt_loss), size);
tlvs += size;
}
/* TE_SUBTLV_RES_BW */
if (SUBTLV_TYPE(mtc->res_bw) != 0) {
size = SUBTLV_SIZE(&(mtc->res_bw.header));
memcpy(tlvs, &(mtc->res_bw), size);
tlvs += size;
}
/* TE_SUBTLV_AVA_BW */
if (SUBTLV_TYPE(mtc->ava_bw) != 0) {
size = SUBTLV_SIZE(&(mtc->ava_bw.header));
memcpy(tlvs, &(mtc->ava_bw), size);
tlvs += size;
}
/* TE_SUBTLV_USE_BW */
if (SUBTLV_TYPE(mtc->use_bw) != 0) {
size = SUBTLV_SIZE(&(mtc->use_bw.header));
memcpy(tlvs, &(mtc->use_bw), size);
tlvs += size;
}
/* Add before this line any other parsing of TLV */
(void)tlvs;
/* Update SubTLVs length */
mtc->length = subtlvs_len(mtc);
zlog_debug("ISIS MPLS-TE: Add %d bytes length SubTLVs", mtc->length);
return mtc->length;
}
/* Compute total Sub-TLVs size */
uint8_t subtlvs_len(struct mpls_te_circuit *mtc)
{
int length = 0;
/* Sanity Check */
if (mtc == NULL)
return 0;
/* TE_SUBTLV_ADMIN_GRP */
if (SUBTLV_TYPE(mtc->admin_grp) != 0)
length += SUBTLV_SIZE(&(mtc->admin_grp.header));
/* TE_SUBTLV_LLRI */
if (SUBTLV_TYPE(mtc->llri) != 0)
length += SUBTLV_SIZE(&mtc->llri.header);
/* TE_SUBTLV_LCLIF_IPADDR */
if (SUBTLV_TYPE(mtc->local_ipaddr) != 0)
length += SUBTLV_SIZE(&mtc->local_ipaddr.header);
/* TE_SUBTLV_RMTIF_IPADDR */
if (SUBTLV_TYPE(mtc->rmt_ipaddr) != 0)
length += SUBTLV_SIZE(&mtc->rmt_ipaddr.header);
/* TE_SUBTLV_MAX_BW */
if (SUBTLV_TYPE(mtc->max_bw) != 0)
length += SUBTLV_SIZE(&mtc->max_bw.header);
/* TE_SUBTLV_MAX_RSV_BW */
if (SUBTLV_TYPE(mtc->max_rsv_bw) != 0)
length += SUBTLV_SIZE(&mtc->max_rsv_bw.header);
/* TE_SUBTLV_UNRSV_BW */
if (SUBTLV_TYPE(mtc->unrsv_bw) != 0)
length += SUBTLV_SIZE(&mtc->unrsv_bw.header);
/* TE_SUBTLV_TE_METRIC */
if (SUBTLV_TYPE(mtc->te_metric) != 0)
length += SUBTLV_SIZE(&mtc->te_metric.header);
/* TE_SUBTLV_AV_DELAY */
if (SUBTLV_TYPE(mtc->av_delay) != 0)
length += SUBTLV_SIZE(&mtc->av_delay.header);
/* TE_SUBTLV_MM_DELAY */
if (SUBTLV_TYPE(mtc->mm_delay) != 0)
length += SUBTLV_SIZE(&mtc->mm_delay.header);
/* TE_SUBTLV_DELAY_VAR */
if (SUBTLV_TYPE(mtc->delay_var) != 0)
length += SUBTLV_SIZE(&mtc->delay_var.header);
/* TE_SUBTLV_PKT_LOSS */
if (SUBTLV_TYPE(mtc->pkt_loss) != 0)
length += SUBTLV_SIZE(&mtc->pkt_loss.header);
/* TE_SUBTLV_RES_BW */
if (SUBTLV_TYPE(mtc->res_bw) != 0)
length += SUBTLV_SIZE(&mtc->res_bw.header);
/* TE_SUBTLV_AVA_BW */
if (SUBTLV_TYPE(mtc->ava_bw) != 0)
length += SUBTLV_SIZE(&mtc->ava_bw.header);
/* TE_SUBTLV_USE_BW */
if (SUBTLV_TYPE(mtc->use_bw) != 0)
length += SUBTLV_SIZE(&mtc->use_bw.header);
/* Check that length is lower than the MAXIMUM SUBTLV size i.e. 256 */
if (length > MAX_SUBTLV_SIZE) {
mtc->length = 0;
return 0;
}
mtc->length = (uint8_t)length;
return mtc->length;
}
/* Following are various functions to set MPLS TE parameters */
static void set_circuitparams_admin_grp(struct mpls_te_circuit *mtc,
uint32_t admingrp)
{
SUBTLV_TYPE(mtc->admin_grp) = TE_SUBTLV_ADMIN_GRP;
SUBTLV_LEN(mtc->admin_grp) = SUBTLV_DEF_SIZE;
mtc->admin_grp.value = htonl(admingrp);
return;
}
static void __attribute__((unused))
set_circuitparams_llri(struct mpls_te_circuit *mtc, uint32_t local,
uint32_t remote)
{
SUBTLV_TYPE(mtc->llri) = TE_SUBTLV_LLRI;
SUBTLV_LEN(mtc->llri) = TE_SUBTLV_LLRI_SIZE;
mtc->llri.local = htonl(local);
mtc->llri.remote = htonl(remote);
}
void set_circuitparams_local_ipaddr(struct mpls_te_circuit *mtc,
struct in_addr addr)
{
SUBTLV_TYPE(mtc->local_ipaddr) = TE_SUBTLV_LOCAL_IPADDR;
SUBTLV_LEN(mtc->local_ipaddr) = SUBTLV_DEF_SIZE;
mtc->local_ipaddr.value.s_addr = addr.s_addr;
return;
}
void set_circuitparams_rmt_ipaddr(struct mpls_te_circuit *mtc,
struct in_addr addr)
{
SUBTLV_TYPE(mtc->rmt_ipaddr) = TE_SUBTLV_RMT_IPADDR;
SUBTLV_LEN(mtc->rmt_ipaddr) = SUBTLV_DEF_SIZE;
mtc->rmt_ipaddr.value.s_addr = addr.s_addr;
return;
}
static void set_circuitparams_max_bw(struct mpls_te_circuit *mtc, float fp)
{
SUBTLV_TYPE(mtc->max_bw) = TE_SUBTLV_MAX_BW;
SUBTLV_LEN(mtc->max_bw) = SUBTLV_DEF_SIZE;
mtc->max_bw.value = htonf(fp);
return;
}
static void set_circuitparams_max_rsv_bw(struct mpls_te_circuit *mtc, float fp)
{
SUBTLV_TYPE(mtc->max_rsv_bw) = TE_SUBTLV_MAX_RSV_BW;
SUBTLV_LEN(mtc->max_rsv_bw) = SUBTLV_DEF_SIZE;
mtc->max_rsv_bw.value = htonf(fp);
return;
}
static void set_circuitparams_unrsv_bw(struct mpls_te_circuit *mtc,
int priority, float fp)
{
/* Note that TLV-length field is the size of array. */
SUBTLV_TYPE(mtc->unrsv_bw) = TE_SUBTLV_UNRSV_BW;
SUBTLV_LEN(mtc->unrsv_bw) = TE_SUBTLV_UNRSV_SIZE;
mtc->unrsv_bw.value[priority] = htonf(fp);
return;
}
static void set_circuitparams_te_metric(struct mpls_te_circuit *mtc,
uint32_t te_metric)
{
SUBTLV_TYPE(mtc->te_metric) = TE_SUBTLV_TE_METRIC;
SUBTLV_LEN(mtc->te_metric) = TE_SUBTLV_TE_METRIC_SIZE;
mtc->te_metric.value[0] = (te_metric >> 16) & 0xFF;
mtc->te_metric.value[1] = (te_metric >> 8) & 0xFF;
mtc->te_metric.value[2] = te_metric & 0xFF;
return;
}
static void set_circuitparams_inter_as(struct mpls_te_circuit *mtc,
struct in_addr addr, uint32_t as)
{
/* Set the Remote ASBR IP address and then the associated AS number */
SUBTLV_TYPE(mtc->rip) = TE_SUBTLV_RIP;
SUBTLV_LEN(mtc->rip) = SUBTLV_DEF_SIZE;
mtc->rip.value.s_addr = addr.s_addr;
SUBTLV_TYPE(mtc->ras) = TE_SUBTLV_RAS;
SUBTLV_LEN(mtc->ras) = SUBTLV_DEF_SIZE;
mtc->ras.value = htonl(as);
}
static void unset_circuitparams_inter_as(struct mpls_te_circuit *mtc)
{
/* Reset the Remote ASBR IP address and then the associated AS number */
SUBTLV_TYPE(mtc->rip) = 0;
SUBTLV_LEN(mtc->rip) = 0;
mtc->rip.value.s_addr = 0;
SUBTLV_TYPE(mtc->ras) = 0;
SUBTLV_LEN(mtc->ras) = 0;
mtc->ras.value = 0;
}
static void set_circuitparams_av_delay(struct mpls_te_circuit *mtc,
uint32_t delay, uint8_t anormal)
{
uint32_t tmp;
/* Note that TLV-length field is the size of array. */
SUBTLV_TYPE(mtc->av_delay) = TE_SUBTLV_AV_DELAY;
SUBTLV_LEN(mtc->av_delay) = SUBTLV_DEF_SIZE;
tmp = delay & TE_EXT_MASK;
if (anormal)
tmp |= TE_EXT_ANORMAL;
mtc->av_delay.value = htonl(tmp);
return;
}
static void set_circuitparams_mm_delay(struct mpls_te_circuit *mtc,
uint32_t low, uint32_t high,
uint8_t anormal)
{
uint32_t tmp;
/* Note that TLV-length field is the size of array. */
SUBTLV_TYPE(mtc->mm_delay) = TE_SUBTLV_MM_DELAY;
SUBTLV_LEN(mtc->mm_delay) = TE_SUBTLV_MM_DELAY_SIZE;
tmp = low & TE_EXT_MASK;
if (anormal)
tmp |= TE_EXT_ANORMAL;
mtc->mm_delay.low = htonl(tmp);
mtc->mm_delay.high = htonl(high);
return;
}
static void set_circuitparams_delay_var(struct mpls_te_circuit *mtc,
uint32_t jitter)
{
/* Note that TLV-length field is the size of array. */
SUBTLV_TYPE(mtc->delay_var) = TE_SUBTLV_DELAY_VAR;
SUBTLV_LEN(mtc->delay_var) = SUBTLV_DEF_SIZE;
mtc->delay_var.value = htonl(jitter & TE_EXT_MASK);
return;
}
static void set_circuitparams_pkt_loss(struct mpls_te_circuit *mtc,
uint32_t loss, uint8_t anormal)
{
uint32_t tmp;
/* Note that TLV-length field is the size of array. */
SUBTLV_TYPE(mtc->pkt_loss) = TE_SUBTLV_PKT_LOSS;
SUBTLV_LEN(mtc->pkt_loss) = SUBTLV_DEF_SIZE;
tmp = loss & TE_EXT_MASK;
if (anormal)
tmp |= TE_EXT_ANORMAL;
mtc->pkt_loss.value = htonl(tmp);
return;
}
static void set_circuitparams_res_bw(struct mpls_te_circuit *mtc, float fp)
{
/* Note that TLV-length field is the size of array. */
SUBTLV_TYPE(mtc->res_bw) = TE_SUBTLV_RES_BW;
SUBTLV_LEN(mtc->res_bw) = SUBTLV_DEF_SIZE;
mtc->res_bw.value = htonf(fp);
return;
}
static void set_circuitparams_ava_bw(struct mpls_te_circuit *mtc, float fp)
{
/* Note that TLV-length field is the size of array. */
SUBTLV_TYPE(mtc->ava_bw) = TE_SUBTLV_AVA_BW;
SUBTLV_LEN(mtc->ava_bw) = SUBTLV_DEF_SIZE;
mtc->ava_bw.value = htonf(fp);
return;
}
static void set_circuitparams_use_bw(struct mpls_te_circuit *mtc, float fp)
{
/* Note that TLV-length field is the size of array. */
SUBTLV_TYPE(mtc->use_bw) = TE_SUBTLV_USE_BW;
SUBTLV_LEN(mtc->use_bw) = SUBTLV_DEF_SIZE;
mtc->use_bw.value = htonf(fp);
return;
}
/* Main initialization / update function of the MPLS TE Circuit context */
/* Call when interface TE Link parameters are modified */
void isis_link_params_update(struct isis_circuit *circuit,
struct interface *ifp)
{
int i;
struct prefix_ipv4 *addr;
struct mpls_te_circuit *mtc;
/* Sanity Check */
if ((circuit == NULL) || (ifp == NULL))
return;
zlog_info("MPLS-TE: Initialize circuit parameters for interface %s",
ifp->name);
/* Check if MPLS TE Circuit context has not been already created */
if (circuit->mtc == NULL)
circuit->mtc = mpls_te_circuit_new();
mtc = circuit->mtc;
/* Fulfil MTC TLV from ifp TE Link parameters */
if (HAS_LINK_PARAMS(ifp)) {
mtc->status = enable;
/* STD_TE metrics */
if (IS_PARAM_SET(ifp->link_params, LP_ADM_GRP))
set_circuitparams_admin_grp(
mtc, ifp->link_params->admin_grp);
else
SUBTLV_TYPE(mtc->admin_grp) = 0;
/* If not already set, register local IP addr from ip_addr list
* if it exists */
if (SUBTLV_TYPE(mtc->local_ipaddr) == 0) {
if (circuit->ip_addrs != NULL
&& listcount(circuit->ip_addrs) != 0) {
addr = (struct prefix_ipv4 *)listgetdata(
(struct listnode *)listhead(
circuit->ip_addrs));
set_circuitparams_local_ipaddr(mtc,
addr->prefix);
}
}
/* If not already set, try to determine Remote IP addr if
* circuit is P2P */
if ((SUBTLV_TYPE(mtc->rmt_ipaddr) == 0)
&& (circuit->circ_type == CIRCUIT_T_P2P)) {
struct isis_adjacency *adj = circuit->u.p2p.neighbor;
if (adj && adj->adj_state == ISIS_ADJ_UP
&& adj->ipv4_address_count) {
set_circuitparams_rmt_ipaddr(
mtc, adj->ipv4_addresses[0]);
}
}
if (IS_PARAM_SET(ifp->link_params, LP_MAX_BW))
set_circuitparams_max_bw(mtc, ifp->link_params->max_bw);
else
SUBTLV_TYPE(mtc->max_bw) = 0;
if (IS_PARAM_SET(ifp->link_params, LP_MAX_RSV_BW))
set_circuitparams_max_rsv_bw(
mtc, ifp->link_params->max_rsv_bw);
else
SUBTLV_TYPE(mtc->max_rsv_bw) = 0;
if (IS_PARAM_SET(ifp->link_params, LP_UNRSV_BW))
for (i = 0; i < MAX_CLASS_TYPE; i++)
set_circuitparams_unrsv_bw(
mtc, i, ifp->link_params->unrsv_bw[i]);
else
SUBTLV_TYPE(mtc->unrsv_bw) = 0;
if (IS_PARAM_SET(ifp->link_params, LP_TE_METRIC))
set_circuitparams_te_metric(
mtc, ifp->link_params->te_metric);
else
SUBTLV_TYPE(mtc->te_metric) = 0;
/* TE metric Extensions */
if (IS_PARAM_SET(ifp->link_params, LP_DELAY))
set_circuitparams_av_delay(
mtc, ifp->link_params->av_delay, 0);
else
SUBTLV_TYPE(mtc->av_delay) = 0;
if (IS_PARAM_SET(ifp->link_params, LP_MM_DELAY))
set_circuitparams_mm_delay(
mtc, ifp->link_params->min_delay,
ifp->link_params->max_delay, 0);
else
SUBTLV_TYPE(mtc->mm_delay) = 0;
if (IS_PARAM_SET(ifp->link_params, LP_DELAY_VAR))
set_circuitparams_delay_var(
mtc, ifp->link_params->delay_var);
else
SUBTLV_TYPE(mtc->delay_var) = 0;
if (IS_PARAM_SET(ifp->link_params, LP_PKT_LOSS))
set_circuitparams_pkt_loss(
mtc, ifp->link_params->pkt_loss, 0);
else
SUBTLV_TYPE(mtc->pkt_loss) = 0;
if (IS_PARAM_SET(ifp->link_params, LP_RES_BW))
set_circuitparams_res_bw(mtc, ifp->link_params->res_bw);
else
SUBTLV_TYPE(mtc->res_bw) = 0;
if (IS_PARAM_SET(ifp->link_params, LP_AVA_BW))
set_circuitparams_ava_bw(mtc, ifp->link_params->ava_bw);
else
SUBTLV_TYPE(mtc->ava_bw) = 0;
if (IS_PARAM_SET(ifp->link_params, LP_USE_BW))
set_circuitparams_use_bw(mtc, ifp->link_params->use_bw);
else
SUBTLV_TYPE(mtc->use_bw) = 0;
/* INTER_AS */
if (IS_PARAM_SET(ifp->link_params, LP_RMT_AS))
set_circuitparams_inter_as(mtc,
ifp->link_params->rmt_ip,
ifp->link_params->rmt_as);
else
/* reset inter-as TE params */
unset_circuitparams_inter_as(mtc);
/* Compute total length of SUB TLVs */
mtc->length = subtlvs_len(mtc);
} else
mtc->status = disable;
/* Finally Update LSP */
#if 0
if (circuit->area && IS_MPLS_TE(circuit->area->mta))
lsp_regenerate_schedule (circuit->area, circuit->is_type, 0);
#endif
return;
}
void isis_mpls_te_update(struct interface *ifp)
{
struct isis_circuit *circuit;
/* Sanity Check */
if (ifp == NULL)
return;
/* Get circuit context from interface */
if ((circuit = circuit_scan_by_ifp(ifp)) == NULL)
return;
/* Update TE TLVs ... */
isis_link_params_update(circuit, ifp);
/* ... and LSP */
if (circuit->area && IS_MPLS_TE(circuit->area->mta))
lsp_regenerate_schedule(circuit->area, circuit->is_type, 0);
return;
}
/*------------------------------------------------------------------------*
* Followings are vty session control functions.
*------------------------------------------------------------------------*/
static uint8_t print_subtlv_admin_grp(struct sbuf *buf, int indent,
struct te_subtlv_admin_grp *tlv)
{
sbuf_push(buf, indent, "Administrative Group: 0x%" PRIx32 "\n",
ntohl(tlv->value));
return (SUBTLV_HDR_SIZE + SUBTLV_DEF_SIZE);
}
static uint8_t print_subtlv_llri(struct sbuf *buf, int indent,
struct te_subtlv_llri *tlv)
{
sbuf_push(buf, indent, "Link Local ID: %" PRIu32 "\n",
ntohl(tlv->local));
sbuf_push(buf, indent, "Link Remote ID: %" PRIu32 "\n",
ntohl(tlv->remote));
return (SUBTLV_HDR_SIZE + TE_SUBTLV_LLRI_SIZE);
}
static uint8_t print_subtlv_local_ipaddr(struct sbuf *buf, int indent,
struct te_subtlv_local_ipaddr *tlv)
{
sbuf_push(buf, indent, "Local Interface IP Address(es): %s\n",
inet_ntoa(tlv->value));
return (SUBTLV_HDR_SIZE + SUBTLV_DEF_SIZE);
}
static uint8_t print_subtlv_rmt_ipaddr(struct sbuf *buf, int indent,
struct te_subtlv_rmt_ipaddr *tlv)
{
sbuf_push(buf, indent, "Remote Interface IP Address(es): %s\n",
inet_ntoa(tlv->value));
return (SUBTLV_HDR_SIZE + SUBTLV_DEF_SIZE);
}
static uint8_t print_subtlv_max_bw(struct sbuf *buf, int indent,
struct te_subtlv_max_bw *tlv)
{
float fval;
fval = ntohf(tlv->value);
sbuf_push(buf, indent, "Maximum Bandwidth: %g (Bytes/sec)\n", fval);
return (SUBTLV_HDR_SIZE + SUBTLV_DEF_SIZE);
}
static uint8_t print_subtlv_max_rsv_bw(struct sbuf *buf, int indent,
struct te_subtlv_max_rsv_bw *tlv)
{
float fval;
fval = ntohf(tlv->value);
sbuf_push(buf, indent, "Maximum Reservable Bandwidth: %g (Bytes/sec)\n",
fval);
return (SUBTLV_HDR_SIZE + SUBTLV_DEF_SIZE);
}
static uint8_t print_subtlv_unrsv_bw(struct sbuf *buf, int indent,
struct te_subtlv_unrsv_bw *tlv)
{
float fval1, fval2;
int i;
sbuf_push(buf, indent, "Unreserved Bandwidth:\n");
for (i = 0; i < MAX_CLASS_TYPE; i += 2) {
fval1 = ntohf(tlv->value[i]);
fval2 = ntohf(tlv->value[i + 1]);
sbuf_push(buf, indent + 2,
"[%d]: %g (Bytes/sec),\t[%d]: %g (Bytes/sec)\n", i,
fval1, i + 1, fval2);
}
return (SUBTLV_HDR_SIZE + TE_SUBTLV_UNRSV_SIZE);
}
static uint8_t print_subtlv_te_metric(struct sbuf *buf, int indent,
struct te_subtlv_te_metric *tlv)
{
uint32_t te_metric;
te_metric = tlv->value[2] | tlv->value[1] << 8 | tlv->value[0] << 16;
sbuf_push(buf, indent, "Traffic Engineering Metric: %u\n", te_metric);
return (SUBTLV_HDR_SIZE + SUBTLV_DEF_SIZE);
}
static uint8_t print_subtlv_ras(struct sbuf *buf, int indent,
struct te_subtlv_ras *tlv)
{
sbuf_push(buf, indent, "Inter-AS TE Remote AS number: %" PRIu32 "\n",
ntohl(tlv->value));
return (SUBTLV_HDR_SIZE + SUBTLV_DEF_SIZE);
}
static uint8_t print_subtlv_rip(struct sbuf *buf, int indent,
struct te_subtlv_rip *tlv)
{
sbuf_push(buf, indent, "Inter-AS TE Remote ASBR IP address: %s\n",
inet_ntoa(tlv->value));
return (SUBTLV_HDR_SIZE + SUBTLV_DEF_SIZE);
}
static uint8_t print_subtlv_av_delay(struct sbuf *buf, int indent,
struct te_subtlv_av_delay *tlv)
{
uint32_t delay;
uint32_t A;
delay = (uint32_t)ntohl(tlv->value) & TE_EXT_MASK;
A = (uint32_t)ntohl(tlv->value) & TE_EXT_ANORMAL;
sbuf_push(buf, indent,
"%s Average Link Delay: %" PRIu32 " (micro-sec)\n",
A ? "Anomalous" : "Normal", delay);
return (SUBTLV_HDR_SIZE + SUBTLV_DEF_SIZE);
}
static uint8_t print_subtlv_mm_delay(struct sbuf *buf, int indent,
struct te_subtlv_mm_delay *tlv)
{
uint32_t low, high;
uint32_t A;
low = (uint32_t)ntohl(tlv->low) & TE_EXT_MASK;
A = (uint32_t)ntohl(tlv->low) & TE_EXT_ANORMAL;
high = (uint32_t)ntohl(tlv->high) & TE_EXT_MASK;
sbuf_push(buf, indent, "%s Min/Max Link Delay: %" PRIu32 " / %" PRIu32 " (micro-sec)\n",
A ? "Anomalous" : "Normal", low, high);
return (SUBTLV_HDR_SIZE + SUBTLV_DEF_SIZE);
}
static uint8_t print_subtlv_delay_var(struct sbuf *buf, int indent,
struct te_subtlv_delay_var *tlv)
{
uint32_t jitter;
jitter = (uint32_t)ntohl(tlv->value) & TE_EXT_MASK;
sbuf_push(buf, indent, "Delay Variation: %" PRIu32 " (micro-sec)\n",
jitter);
return (SUBTLV_HDR_SIZE + SUBTLV_DEF_SIZE);
}
static uint8_t print_subtlv_pkt_loss(struct sbuf *buf, int indent,
struct te_subtlv_pkt_loss *tlv)
{
uint32_t loss;
uint32_t A;
float fval;
loss = (uint32_t)ntohl(tlv->value) & TE_EXT_MASK;
fval = (float)(loss * LOSS_PRECISION);
A = (uint32_t)ntohl(tlv->value) & TE_EXT_ANORMAL;
sbuf_push(buf, indent, "%s Link Packet Loss: %g (%%)\n",
A ? "Anomalous" : "Normal", fval);
return (SUBTLV_HDR_SIZE + SUBTLV_DEF_SIZE);
}
static uint8_t print_subtlv_res_bw(struct sbuf *buf, int indent,
struct te_subtlv_res_bw *tlv)
{
float fval;
fval = ntohf(tlv->value);
sbuf_push(buf, indent,
"Unidirectional Residual Bandwidth: %g (Bytes/sec)\n", fval);
return (SUBTLV_HDR_SIZE + SUBTLV_DEF_SIZE);
}
static uint8_t print_subtlv_ava_bw(struct sbuf *buf, int indent,
struct te_subtlv_ava_bw *tlv)
{
float fval;
fval = ntohf(tlv->value);
sbuf_push(buf, indent,
"Unidirectional Available Bandwidth: %g (Bytes/sec)\n", fval);
return (SUBTLV_HDR_SIZE + SUBTLV_DEF_SIZE);
}
static uint8_t print_subtlv_use_bw(struct sbuf *buf, int indent,
struct te_subtlv_use_bw *tlv)
{
float fval;
fval = ntohf(tlv->value);
sbuf_push(buf, indent,
"Unidirectional Utilized Bandwidth: %g (Bytes/sec)\n", fval);
return (SUBTLV_HDR_SIZE + SUBTLV_DEF_SIZE);
}
static uint8_t print_unknown_tlv(struct sbuf *buf, int indent,
struct subtlv_header *tlvh)
{
int i, rtn;
uint8_t *v = (uint8_t *)tlvh;
if (tlvh->length != 0) {
sbuf_push(buf, indent,
"Unknown TLV: [type(%#.2x), length(%#.2x)]\n",
tlvh->type, tlvh->length);
sbuf_push(buf, indent + 2, "Dump: [00]");
rtn = 1; /* initialize end of line counter */
for (i = 0; i < tlvh->length; i++) {
sbuf_push(buf, 0, " %#.2x", v[i]);
if (rtn == 8) {
sbuf_push(buf, 0, "\n");
sbuf_push(buf, indent + 8, "[%.2x]", i + 1);
rtn = 1;
} else
rtn++;
}
sbuf_push(buf, 0, "\n");
} else {
sbuf_push(buf, indent,
"Unknown TLV: [type(%#.2x), length(%#.2x)]\n",
tlvh->type, tlvh->length);
}
return SUBTLV_SIZE(tlvh);
}
/* Main Show function */
void mpls_te_print_detail(struct sbuf *buf, int indent,
uint8_t *subtlvs, uint8_t subtlv_len)
{
struct subtlv_header *tlvh = (struct subtlv_header *)subtlvs;
uint16_t sum = 0;
for (; sum < subtlv_len;
tlvh = (struct subtlv_header *)(subtlvs + sum)) {
if (subtlv_len - sum < SUBTLV_SIZE(tlvh)) {
sbuf_push(buf, indent, "Available data %" PRIu8 " is less than TLV size %u!\n",
subtlv_len - sum, SUBTLV_SIZE(tlvh));
return;
}
switch (tlvh->type) {
case TE_SUBTLV_ADMIN_GRP:
if (tlvh->length != SUBTLV_DEF_SIZE) {
sbuf_push(buf, indent, "TLV size does not match expected size for Administrative Group!\n");
return;
}
sum += print_subtlv_admin_grp(buf, indent,
(struct te_subtlv_admin_grp *)tlvh);
break;
case TE_SUBTLV_LLRI:
if (tlvh->length != TE_SUBTLV_LLRI_SIZE) {
sbuf_push(buf, indent, "TLV size does not match expected size for Link ID!\n");
return;
}
sum += print_subtlv_llri(buf, indent,
(struct te_subtlv_llri *)tlvh);
break;
case TE_SUBTLV_LOCAL_IPADDR:
if (tlvh->length != SUBTLV_DEF_SIZE) {
sbuf_push(buf, indent, "TLV size does not match expected size for Local IP address!\n");
return;
}
sum += print_subtlv_local_ipaddr(buf, indent,
(struct te_subtlv_local_ipaddr *)tlvh);
break;
case TE_SUBTLV_RMT_IPADDR:
if (tlvh->length != SUBTLV_DEF_SIZE) {
sbuf_push(buf, indent, "TLV size does not match expected size for Remote Interface address!\n");
return;
}
sum += print_subtlv_rmt_ipaddr(buf, indent,
(struct te_subtlv_rmt_ipaddr *)tlvh);
break;
case TE_SUBTLV_MAX_BW:
if (tlvh->length != SUBTLV_DEF_SIZE) {
sbuf_push(buf, indent, "TLV size does not match expected size for Maximum Bandwidth!\n");
return;
}
sum += print_subtlv_max_bw(buf, indent,
(struct te_subtlv_max_bw *)tlvh);
break;
case TE_SUBTLV_MAX_RSV_BW:
if (tlvh->length != SUBTLV_DEF_SIZE) {
sbuf_push(buf, indent, "TLV size does not match expected size for Maximum Reservable Bandwidth!\n");
return;
}
sum += print_subtlv_max_rsv_bw(buf, indent,
(struct te_subtlv_max_rsv_bw *)tlvh);
break;
case TE_SUBTLV_UNRSV_BW:
if (tlvh->length != TE_SUBTLV_UNRSV_SIZE) {
sbuf_push(buf, indent, "TLV size does not match expected size for Unreserved Bandwidth!\n");
return;
}
sum += print_subtlv_unrsv_bw(buf, indent,
(struct te_subtlv_unrsv_bw *)tlvh);
break;
case TE_SUBTLV_TE_METRIC:
if (tlvh->length != SUBTLV_DEF_SIZE) {
sbuf_push(buf, indent, "TLV size does not match expected size for Traffic Engineering Metric!\n");
return;
}
sum += print_subtlv_te_metric(buf, indent,
(struct te_subtlv_te_metric *)tlvh);
break;
case TE_SUBTLV_RAS:
if (tlvh->length != SUBTLV_DEF_SIZE) {
sbuf_push(buf, indent, "TLV size does not match expected size for Remote AS number!\n");
return;
}
sum += print_subtlv_ras(buf, indent,
(struct te_subtlv_ras *)tlvh);
break;
case TE_SUBTLV_RIP:
if (tlvh->length != SUBTLV_DEF_SIZE) {
sbuf_push(buf, indent, "TLV size does not match expected size for Remote ASBR IP Address!\n");
return;
}
sum += print_subtlv_rip(buf, indent,
(struct te_subtlv_rip *)tlvh);
break;
case TE_SUBTLV_AV_DELAY:
if (tlvh->length != SUBTLV_DEF_SIZE) {
sbuf_push(buf, indent, "TLV size does not match expected size for Average Link Delay!\n");
return;
}
sum += print_subtlv_av_delay(buf, indent,
(struct te_subtlv_av_delay *)tlvh);
break;