forked from richardcochran/linuxptp
-
Notifications
You must be signed in to change notification settings - Fork 0
/
config.c
1157 lines (1035 loc) · 30.8 KB
/
config.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
/**
* @file config.c
* @note Copyright (C) 2011 Richard Cochran <[email protected]>
*
* This program 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 of the License, or
* (at your option) any later version.
*
* This program 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; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <ctype.h>
#include <float.h>
#include <limits.h>
#include <linux/ptp_clock.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include "as_capable.h"
#include "bmc.h"
#include "clock.h"
#include "config.h"
#include "ether.h"
#include "hash.h"
#include "print.h"
#include "util.h"
#define UDS_FILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP) /*0660*/
#define UDS_RO_FILEMODE (UDS_FILEMODE|S_IROTH|S_IWOTH) /*0666*/
struct interface {
STAILQ_ENTRY(interface) list;
};
enum config_section {
GLOBAL_SECTION,
UC_MTAB_SECTION,
PORT_SECTION,
UNKNOWN_SECTION,
};
enum config_type {
CFG_TYPE_INT,
CFG_TYPE_DOUBLE,
CFG_TYPE_ENUM,
CFG_TYPE_STRING,
};
struct config_enum {
const char *label;
int value;
};
typedef union {
int i;
double d;
char *s;
} any_t;
#define CONFIG_LABEL_SIZE 32
#define CFG_ITEM_STATIC (1 << 0) /* statically allocated, not to be freed */
#define CFG_ITEM_LOCKED (1 << 1) /* command line value, may not be changed */
#define CFG_ITEM_PORT (1 << 2) /* item may appear in port sections */
#define CFG_ITEM_DYNSTR (1 << 4) /* string value dynamically allocated */
struct config_item {
char label[CONFIG_LABEL_SIZE];
enum config_type type;
struct config_enum *tab;
unsigned int flags;
any_t val;
any_t min;
any_t max;
};
#define N_CONFIG_ITEMS (sizeof(config_tab) / sizeof(config_tab[0]))
#define CONFIG_ITEM_DBL(_label, _port, _default, _min, _max) { \
.label = _label, \
.type = CFG_TYPE_DOUBLE, \
.flags = _port ? CFG_ITEM_PORT : 0, \
.val.d = _default, \
.min.d = _min, \
.max.d = _max, \
}
#define CONFIG_ITEM_ENUM(_label, _port, _default, _table) { \
.label = _label, \
.type = CFG_TYPE_ENUM, \
.flags = _port ? CFG_ITEM_PORT : 0, \
.tab = _table, \
.val.i = _default, \
}
#define CONFIG_ITEM_INT(_label, _port, _default, _min, _max) { \
.label = _label, \
.type = CFG_TYPE_INT, \
.flags = _port ? CFG_ITEM_PORT : 0, \
.val.i = _default, \
.min.i = _min, \
.max.i = _max, \
}
#define CONFIG_ITEM_STRING(_label, _port, _default) { \
.label = _label, \
.type = CFG_TYPE_STRING, \
.flags = _port ? CFG_ITEM_PORT : 0, \
.val.s = _default, \
}
#define GLOB_ITEM_DBL(label, _default, min, max) \
CONFIG_ITEM_DBL(label, 0, _default, min, max)
#define GLOB_ITEM_ENU(label, _default, table) \
CONFIG_ITEM_ENUM(label, 0, _default, table)
#define GLOB_ITEM_INT(label, _default, min, max) \
CONFIG_ITEM_INT(label, 0, _default, min, max)
#define GLOB_ITEM_STR(label, _default) \
CONFIG_ITEM_STRING(label, 0, _default)
#define PORT_ITEM_DBL(label, _default, min, max) \
CONFIG_ITEM_DBL(label, 1, _default, min, max)
#define PORT_ITEM_ENU(label, _default, table) \
CONFIG_ITEM_ENUM(label, 1, _default, table)
#define PORT_ITEM_INT(label, _default, min, max) \
CONFIG_ITEM_INT(label, 1, _default, min, max)
#define PORT_ITEM_STR(label, _default) \
CONFIG_ITEM_STRING(label, 1, _default)
static struct config_enum clock_servo_enu[] = {
{ "pi", CLOCK_SERVO_PI },
{ "linreg", CLOCK_SERVO_LINREG },
{ "ntpshm", CLOCK_SERVO_NTPSHM },
{ "nullf", CLOCK_SERVO_NULLF },
{ NULL, 0 },
};
static struct config_enum clock_type_enu[] = {
{ "OC", CLOCK_TYPE_ORDINARY },
{ "BC", CLOCK_TYPE_BOUNDARY },
{ "P2P_TC", CLOCK_TYPE_P2P },
{ "E2E_TC", CLOCK_TYPE_E2E },
{ NULL, 0 },
};
static struct config_enum dataset_comp_enu[] = {
{ "ieee1588", DS_CMP_IEEE1588 },
{ "G.8275.x", DS_CMP_G8275 },
{ NULL, 0 },
};
static struct config_enum delay_filter_enu[] = {
{ "moving_average", FILTER_MOVING_AVERAGE },
{ "moving_median", FILTER_MOVING_MEDIAN },
{ NULL, 0 },
};
static struct config_enum delay_mech_enu[] = {
{ "Auto", DM_AUTO },
{ "E2E", DM_E2E },
{ "P2P", DM_P2P },
{ NULL, 0 },
};
static struct config_enum extts_polarity_enu[] = {
{ "rising", PTP_RISING_EDGE },
{ "falling", PTP_FALLING_EDGE },
{ "both", PTP_RISING_EDGE | PTP_FALLING_EDGE },
{ NULL, 0 },
};
static struct config_enum hwts_filter_enu[] = {
{ "normal", HWTS_FILTER_NORMAL },
{ "check", HWTS_FILTER_CHECK },
{ "full", HWTS_FILTER_FULL },
{ NULL, 0 },
};
static struct config_enum nw_trans_enu[] = {
{ "L2", TRANS_IEEE_802_3 },
{ "UDPv4", TRANS_UDP_IPV4 },
{ "UDPv6", TRANS_UDP_IPV6 },
{ NULL, 0 },
};
static struct config_enum timestamping_enu[] = {
{ "hardware", TS_HARDWARE },
{ "software", TS_SOFTWARE },
{ "legacy", TS_LEGACY_HW },
{ "onestep", TS_ONESTEP },
{ "p2p1step", TS_P2P1STEP },
{ NULL, 0 },
};
static struct config_enum tsproc_enu[] = {
{ "filter", TSPROC_FILTER },
{ "raw", TSPROC_RAW },
{ "filter_weight", TSPROC_FILTER_WEIGHT },
{ "raw_weight", TSPROC_RAW_WEIGHT },
{ NULL, 0 },
};
static struct config_enum as_capable_enu[] = {
{ "true", AS_CAPABLE_TRUE },
{ "auto", AS_CAPABLE_AUTO },
{ NULL, 0 },
};
static struct config_enum bmca_enu[] = {
{ "ptp", BMCA_PTP },
{ "noop", BMCA_NOOP },
{ NULL, 0 },
};
struct config_item config_tab[] = {
PORT_ITEM_INT("announceReceiptTimeout", 3, 2, UINT8_MAX),
PORT_ITEM_ENU("asCapable", AS_CAPABLE_AUTO, as_capable_enu),
GLOB_ITEM_INT("assume_two_step", 0, 0, 1),
PORT_ITEM_INT("boundary_clock_jbod", 0, 0, 1),
PORT_ITEM_ENU("BMCA", BMCA_PTP, bmca_enu),
GLOB_ITEM_INT("check_fup_sync", 0, 0, 1),
GLOB_ITEM_INT("clientOnly", 0, 0, 1),
GLOB_ITEM_INT("clockAccuracy", 0xfe, 0, UINT8_MAX),
GLOB_ITEM_INT("clockClass", 248, 0, UINT8_MAX),
GLOB_ITEM_STR("clockIdentity", "000000.0000.000000"),
GLOB_ITEM_INT("clock_class_threshold", CLOCK_CLASS_THRESHOLD_DEFAULT, 6, CLOCK_CLASS_THRESHOLD_DEFAULT),
GLOB_ITEM_ENU("clock_servo", CLOCK_SERVO_PI, clock_servo_enu),
GLOB_ITEM_ENU("clock_type", CLOCK_TYPE_ORDINARY, clock_type_enu),
GLOB_ITEM_ENU("dataset_comparison", DS_CMP_IEEE1588, dataset_comp_enu),
PORT_ITEM_INT("delayAsymmetry", 0, INT_MIN, INT_MAX),
PORT_ITEM_ENU("delay_filter", FILTER_MOVING_MEDIAN, delay_filter_enu),
PORT_ITEM_INT("delay_filter_length", 10, 1, INT_MAX),
PORT_ITEM_ENU("delay_mechanism", DM_E2E, delay_mech_enu),
PORT_ITEM_INT("delay_response_timeout", 0, 0, UINT8_MAX),
GLOB_ITEM_INT("dscp_event", 0, 0, 63),
GLOB_ITEM_INT("dscp_general", 0, 0, 63),
GLOB_ITEM_INT("domainNumber", 0, 0, 127),
PORT_ITEM_INT("egressLatency", 0, INT_MIN, INT_MAX),
PORT_ITEM_INT("fault_badpeernet_interval", 16, INT32_MIN, INT32_MAX),
PORT_ITEM_INT("fault_reset_interval", 4, INT8_MIN, INT8_MAX),
GLOB_ITEM_DBL("first_step_threshold", 0.00002, 0.0, DBL_MAX),
PORT_ITEM_INT("follow_up_info", 0, 0, 1),
GLOB_ITEM_INT("free_running", 0, 0, 1),
PORT_ITEM_INT("freq_est_interval", 1, 0, INT_MAX),
GLOB_ITEM_INT("G.8275.defaultDS.localPriority", 128, 1, UINT8_MAX),
PORT_ITEM_INT("G.8275.portDS.localPriority", 128, 1, UINT8_MAX),
GLOB_ITEM_INT("gmCapable", 1, 0, 1),
GLOB_ITEM_ENU("hwts_filter", HWTS_FILTER_NORMAL, hwts_filter_enu),
PORT_ITEM_INT("hybrid_e2e", 0, 0, 1),
PORT_ITEM_INT("ignore_source_id", 0, 0, 1),
PORT_ITEM_INT("ignore_transport_specific", 0, 0, 1),
PORT_ITEM_INT("ingressLatency", 0, INT_MIN, INT_MAX),
PORT_ITEM_INT("inhibit_announce", 0, 0, 1),
PORT_ITEM_INT("inhibit_delay_req", 0, 0, 1),
PORT_ITEM_INT("inhibit_multicast_service", 0, 0, 1),
GLOB_ITEM_INT("initial_delay", 0, 0, INT_MAX),
GLOB_ITEM_INT("kernel_leap", 1, 0, 1),
GLOB_ITEM_STR("leapfile", NULL),
PORT_ITEM_INT("logAnnounceInterval", 1, INT8_MIN, INT8_MAX),
PORT_ITEM_INT("logMinDelayReqInterval", 0, INT8_MIN, INT8_MAX),
PORT_ITEM_INT("logMinPdelayReqInterval", 0, INT8_MIN, INT8_MAX),
PORT_ITEM_INT("logSyncInterval", 0, INT8_MIN, INT8_MAX),
GLOB_ITEM_INT("logging_level", LOG_INFO, PRINT_LEVEL_MIN, PRINT_LEVEL_MAX),
PORT_ITEM_INT("masterOnly", 0, 0, 1), /*deprecated*/
GLOB_ITEM_INT("maxStepsRemoved", 255, 2, UINT8_MAX),
GLOB_ITEM_STR("message_tag", NULL),
GLOB_ITEM_STR("manufacturerIdentity", "00:00:00"),
GLOB_ITEM_INT("max_frequency", 900000000, 0, INT_MAX),
PORT_ITEM_INT("min_neighbor_prop_delay", -20000000, INT_MIN, -1),
PORT_ITEM_INT("msg_interval_request", 0, 0, 1),
PORT_ITEM_INT("neighborPropDelayThresh", 20000000, 0, INT_MAX),
PORT_ITEM_INT("net_sync_monitor", 0, 0, 1),
PORT_ITEM_ENU("network_transport", TRANS_UDP_IPV4, nw_trans_enu),
GLOB_ITEM_INT("ntpshm_segment", 0, INT_MIN, INT_MAX),
GLOB_ITEM_INT("offsetScaledLogVariance", 0xffff, 0, UINT16_MAX),
PORT_ITEM_INT("operLogPdelayReqInterval", 0, INT8_MIN, INT8_MAX),
PORT_ITEM_INT("operLogSyncInterval", 0, INT8_MIN, INT8_MAX),
PORT_ITEM_INT("path_trace_enabled", 0, 0, 1),
PORT_ITEM_INT("phc_index", -1, -1, INT_MAX),
GLOB_ITEM_DBL("pi_integral_const", 0.0, 0.0, DBL_MAX),
GLOB_ITEM_DBL("pi_integral_exponent", 0.4, -DBL_MAX, DBL_MAX),
GLOB_ITEM_DBL("pi_integral_norm_max", 0.3, DBL_MIN, 2.0),
GLOB_ITEM_DBL("pi_integral_scale", 0.0, 0.0, DBL_MAX),
GLOB_ITEM_DBL("pi_proportional_const", 0.0, 0.0, DBL_MAX),
GLOB_ITEM_DBL("pi_proportional_exponent", -0.3, -DBL_MAX, DBL_MAX),
GLOB_ITEM_DBL("pi_proportional_norm_max", 0.7, DBL_MIN, 1.0),
GLOB_ITEM_DBL("pi_proportional_scale", 0.0, 0.0, DBL_MAX),
GLOB_ITEM_INT("priority1", 128, 0, UINT8_MAX),
GLOB_ITEM_INT("priority2", 128, 0, UINT8_MAX),
GLOB_ITEM_STR("productDescription", ";;"),
PORT_ITEM_STR("ptp_dst_mac", "01:1B:19:00:00:00"),
PORT_ITEM_STR("p2p_dst_mac", "01:80:C2:00:00:0E"),
GLOB_ITEM_STR("revisionData", ";;"),
GLOB_ITEM_INT("sanity_freq_limit", 200000000, 0, INT_MAX),
PORT_ITEM_INT("serverOnly", 0, 0, 1),
GLOB_ITEM_INT("servo_num_offset_values", 10, 0, INT_MAX),
GLOB_ITEM_INT("servo_offset_threshold", 0, 0, INT_MAX),
GLOB_ITEM_STR("slave_event_monitor", ""),
GLOB_ITEM_INT("slaveOnly", 0, 0, 1), /*deprecated*/
GLOB_ITEM_INT("socket_priority", 0, 0, 15),
GLOB_ITEM_DBL("step_threshold", 0.0, 0.0, DBL_MAX),
GLOB_ITEM_INT("step_window", 0, 0, INT_MAX),
GLOB_ITEM_INT("summary_interval", 0, INT_MIN, INT_MAX),
PORT_ITEM_INT("syncReceiptTimeout", 0, 0, UINT8_MAX),
GLOB_ITEM_INT("tc_spanning_tree", 0, 0, 1),
GLOB_ITEM_INT("timeSource", INTERNAL_OSCILLATOR, 0x10, 0xfe),
GLOB_ITEM_ENU("time_stamping", TS_HARDWARE, timestamping_enu),
PORT_ITEM_INT("transportSpecific", 0, 0, 0x0F),
PORT_ITEM_INT("ts2phc.channel", 0, 0, INT_MAX),
PORT_ITEM_INT("ts2phc.extts_correction", 0, INT_MIN, INT_MAX),
PORT_ITEM_ENU("ts2phc.extts_polarity", PTP_RISING_EDGE, extts_polarity_enu),
PORT_ITEM_INT("ts2phc.master", 0, 0, 1),
PORT_ITEM_INT("ts2phc.nmea_baudrate", 9600, 300, INT_MAX),
GLOB_ITEM_STR("ts2phc.nmea_remote_host", ""),
GLOB_ITEM_STR("ts2phc.nmea_remote_port", ""),
GLOB_ITEM_STR("ts2phc.nmea_serialport", "/dev/ttyS0"),
PORT_ITEM_INT("ts2phc.pin_index", 0, 0, INT_MAX),
GLOB_ITEM_INT("ts2phc.pulsewidth", 500000000, 1000000, 999000000),
PORT_ITEM_ENU("tsproc_mode", TSPROC_FILTER, tsproc_enu),
GLOB_ITEM_INT("twoStepFlag", 1, 0, 1),
GLOB_ITEM_INT("tx_timestamp_timeout", 10, 1, INT_MAX),
PORT_ITEM_INT("udp_ttl", 1, 1, 255),
PORT_ITEM_INT("udp6_scope", 0x0E, 0x00, 0x0F),
GLOB_ITEM_STR("uds_address", "/var/run/ptp4l"),
PORT_ITEM_INT("uds_file_mode", UDS_FILEMODE, 0, 0777),
GLOB_ITEM_STR("uds_ro_address", "/var/run/ptp4lro"),
PORT_ITEM_INT("uds_ro_file_mode", UDS_RO_FILEMODE, 0, 0777),
PORT_ITEM_INT("unicast_listen", 0, 0, 1),
PORT_ITEM_INT("unicast_master_table", 0, 0, INT_MAX),
PORT_ITEM_INT("unicast_req_duration", 3600, 10, INT_MAX),
GLOB_ITEM_INT("use_syslog", 1, 0, 1),
GLOB_ITEM_STR("userDescription", ""),
GLOB_ITEM_INT("utc_offset", CURRENT_UTC_OFFSET, 0, INT_MAX),
GLOB_ITEM_INT("verbose", 0, 0, 1),
GLOB_ITEM_INT("write_phase_mode", 0, 0, 1),
};
static struct unicast_master_table *current_uc_mtab;
static enum parser_result
parse_fault_interval(struct config *cfg, const char *section,
const char *option, const char *value);
static struct config_item *config_section_item(struct config *cfg,
const char *section,
const char *name)
{
char buf[CONFIG_LABEL_SIZE + MAX_IFNAME_SIZE];
snprintf(buf, sizeof(buf), "%s.%s", section, name);
return hash_lookup(cfg->htab, buf);
}
static struct config_item *config_global_item(struct config *cfg,
const char *name)
{
return config_section_item(cfg, "global", name);
}
static struct config_item *config_find_item(struct config *cfg,
const char *section,
const char *name)
{
struct config_item *ci;
if (section) {
ci = config_section_item(cfg, section, name);
if (ci) {
return ci;
}
}
return config_global_item(cfg, name);
}
static struct config_item *config_item_alloc(struct config *cfg,
const char *section,
const char *name,
enum config_type type)
{
struct config_item *ci;
char buf[CONFIG_LABEL_SIZE + MAX_IFNAME_SIZE];
ci = calloc(1, sizeof(*ci));
if (!ci) {
fprintf(stderr, "low memory\n");
return NULL;
}
strncpy(ci->label, name, CONFIG_LABEL_SIZE - 1);
ci->type = type;
snprintf(buf, sizeof(buf), "%s.%s", section, ci->label);
if (hash_insert(cfg->htab, buf, ci)) {
fprintf(stderr, "low memory or duplicate item %s\n", name);
free(ci);
return NULL;
}
return ci;
}
static void config_item_free(void *ptr)
{
struct config_item *ci = ptr;
if (ci->type == CFG_TYPE_STRING && ci->flags & CFG_ITEM_DYNSTR)
free(ci->val.s);
if (ci->flags & CFG_ITEM_STATIC)
return;
free(ci);
}
static int config_switch_unicast_mtab(struct config *cfg, int idx, int line_num)
{
struct unicast_master_table *table;
if (idx < 1) {
fprintf(stderr, "line %d: table_id %d is out of range. "
"Must be in the range %d to %d\n",
line_num, idx, 1, INT_MAX);
return -1;
}
STAILQ_FOREACH(table, &cfg->unicast_master_tables, list) {
if (table->table_index == idx) {
fprintf(stderr, "line %d: table_id %d already taken\n",
line_num, idx);
return -1;
}
}
table = calloc(1, sizeof(*table));
if (!table) {
fprintf(stderr, "low memory\n");
return -1;
}
STAILQ_INIT(&table->addrs);
table->table_index = idx;
memset(&table->peer_addr.portIdentity, 0xff,
sizeof(table->peer_addr.portIdentity));
STAILQ_INSERT_TAIL(&cfg->unicast_master_tables, table, list);
current_uc_mtab = table;
return 0;
}
static int config_unicast_mtab_address(enum transport_type type, char *address,
int line_num)
{
struct unicast_master_address *item;
if (!current_uc_mtab) {
fprintf(stderr, "line %d: missing table_id\n", line_num);
return -1;
}
item = calloc(1, sizeof(*item));
if (!item) {
fprintf(stderr, "low memory\n");
return -1;
}
if (str2addr(type, address, &item->address)) {
fprintf(stderr, "line %d: bad address\n", line_num);
free(item);
return -1;
}
memset(&item->portIdentity, 0xff, sizeof(item->portIdentity));
item->type = type;
STAILQ_INSERT_TAIL(¤t_uc_mtab->addrs, item, list);
current_uc_mtab->count++;
return 0;
}
static int config_unicast_mtab_peer(char *address, int line_num)
{
if (!current_uc_mtab) {
fprintf(stderr, "line %d: missing table_id\n", line_num);
return -1;
}
if (current_uc_mtab->peer_name) {
free(current_uc_mtab->peer_name);
}
current_uc_mtab->peer_name = strdup(address);
if (!current_uc_mtab->peer_name) {
fprintf(stderr, "low memory\n");
return -1;
}
return 0;
}
static int config_unicast_mtab_query_interval(int lqi, int line_num)
{
if (!current_uc_mtab) {
fprintf(stderr, "line %d: missing table_id\n", line_num);
return -1;
}
if (lqi < INT8_MIN || lqi > INT8_MAX) {
fprintf(stderr, "line %d: logQueryInterval %d out of range\n",
line_num, lqi);
return -1;
}
current_uc_mtab->logQueryInterval = lqi;
return 0;
}
static enum parser_result parse_section_line(char *s, enum config_section *section)
{
if (!strcasecmp(s, "[global]")) {
*section = GLOBAL_SECTION;
} else if (!strcasecmp(s, "[unicast_master_table]")) {
*section = UC_MTAB_SECTION;
current_uc_mtab = NULL;
} else if (s[0] == '[') {
char c;
*section = PORT_SECTION;
/* Replace square brackets with white space. */
while (0 != (c = *s)) {
if (c == '[' || c == ']')
*s = ' ';
s++;
}
} else
return NOT_PARSED;
return PARSED_OK;
}
static enum parser_result parse_item(struct config *cfg,
int commandline,
const char *section,
const char *option,
const char *value)
{
enum parser_result r;
struct config_item *cgi, *dst;
struct config_enum *cte;
double df;
int val;
r = parse_fault_interval(cfg, section, option, value);
if (r != NOT_PARSED)
return r;
r = BAD_VALUE;
/* If there is no default value, then the option is bogus. */
cgi = config_global_item(cfg, option);
if (!cgi) {
return NOT_PARSED;
}
switch (cgi->type) {
case CFG_TYPE_INT:
r = get_ranged_int(value, &val, cgi->min.i, cgi->max.i);
break;
case CFG_TYPE_DOUBLE:
r = get_ranged_double(value, &df, cgi->min.d, cgi->max.d);
break;
case CFG_TYPE_ENUM:
for (cte = cgi->tab; cte->label; cte++) {
if (!strcasecmp(cte->label, value)) {
val = cte->value;
r = PARSED_OK;
break;
}
}
break;
case CFG_TYPE_STRING:
r = PARSED_OK;
break;
}
if (r != PARSED_OK) {
return r;
}
if (section) {
if (!(cgi->flags & CFG_ITEM_PORT)) {
return NOT_PARSED;
}
/* Create or update this port specific item. */
dst = config_section_item(cfg, section, option);
if (!dst) {
dst = config_item_alloc(cfg, section, option, cgi->type);
if (!dst) {
return NOT_PARSED;
}
}
} else if (!commandline && cgi->flags & CFG_ITEM_LOCKED) {
/* This global option was set on the command line. */
return PARSED_OK;
} else {
/* Update the global default value. */
dst = cgi;
}
switch (dst->type) {
case CFG_TYPE_INT:
case CFG_TYPE_ENUM:
dst->val.i = val;
break;
case CFG_TYPE_DOUBLE:
dst->val.d = df;
break;
case CFG_TYPE_STRING:
if (dst->flags & CFG_ITEM_DYNSTR) {
free(dst->val.s);
}
dst->val.s = strdup(value);
if (!dst->val.s) {
pr_err("low memory");
return NOT_PARSED;
}
dst->flags |= CFG_ITEM_DYNSTR;
break;
}
if (commandline) {
dst->flags |= CFG_ITEM_LOCKED;
}
return PARSED_OK;
}
static enum parser_result parse_fault_interval(struct config *cfg,
const char *section,
const char *option,
const char *value)
{
int i, val;
const char *str, *fault_options[2] = {
"fault_badpeernet_interval",
"fault_reset_interval",
};
int fault_values[2] = {
0, FRI_ASAP,
};
if (strcasecmp("ASAP", value)) {
return NOT_PARSED;
}
for (i = 0; i < 2; i++) {
str = fault_options[i];
val = fault_values[i];
if (!strcmp(option, str)) {
if (config_set_section_int(cfg, section, str, val)) {
pr_err("bug: failed to set option %s!", option);
exit(-1);
}
return PARSED_OK;
}
}
return NOT_PARSED;
}
static int parse_unicast_mtab_line(struct config *cfg, char *line, int line_num)
{
char address[64 + 1] = {0}, transport[16 + 1] = {0};
enum transport_type type = TRANS_UDS;
struct config_enum *cte;
int cnt, lqi, table_id;
cnt = sscanf(line, " table_id %d", &table_id);
if (cnt == 1) {
return config_switch_unicast_mtab(cfg, table_id, line_num);
}
cnt = sscanf(line, " logQueryInterval %d", &lqi);
if (cnt == 1) {
return config_unicast_mtab_query_interval(lqi, line_num);
}
cnt = sscanf(line, " peer_address %64s", address);
if (cnt == 1) {
return config_unicast_mtab_peer(address, line_num);
}
cnt = sscanf(line, " %16s %64s", transport, address);
if (cnt != 2) {
fprintf(stderr, "bad master table at line %d\n", line_num);
return -1;
}
for (cte = nw_trans_enu; cte->label; cte++) {
if (!strcasecmp(cte->label, transport)) {
type = cte->value;
break;
}
}
return config_unicast_mtab_address(type, address, line_num);
}
static enum parser_result parse_setting_line(char *line,
const char **option,
const char **value)
{
*option = line;
while (!isspace(line[0])) {
if (line[0] == '\0')
return NOT_PARSED;
line++;
}
while (isspace(line[0])) {
line[0] = '\0';
line++;
}
*value = line;
return PARSED_OK;
}
static void check_deprecated_options(const char **option)
{
const char *new_option = NULL;
if (!strcmp(*option, "pi_offset_const")) {
new_option = "step_threshold";
} else if (!strcmp(*option, "pi_f_offset_const")) {
new_option = "first_step_threshold";
} else if (!strcmp(*option, "pi_max_frequency")) {
new_option = "max_frequency";
} else if (!strcmp(*option, "masterOnly")) {
new_option = "serverOnly";
} else if (!strcmp(*option, "slaveOnly")) {
new_option = "clientOnly";
}
if (new_option) {
fprintf(stderr, "option %s is deprecated, please use %s instead\n",
*option, new_option);
*option = new_option;
}
}
static struct option *config_alloc_longopts(void)
{
struct config_item *ci;
struct option *opts;
int i;
opts = calloc(1, (1 + N_CONFIG_ITEMS) * sizeof(*opts));
if (!opts) {
return NULL;
}
for (i = 0; i < N_CONFIG_ITEMS; i++) {
ci = &config_tab[i];
opts[i].name = ci->label;
opts[i].has_arg = required_argument;
/* Avoid bug in detection of ambiguous options in glibc */
opts[i].flag = &opts[i].val;
}
return opts;
}
int config_read(const char *name, struct config *cfg)
{
enum config_section current_section = UNKNOWN_SECTION;
enum parser_result parser_res;
FILE *fp;
char buf[1024], *line, *c;
const char *option, *value;
struct interface *current_port = NULL;
int line_num;
fp = 0 == strncmp(name, "-", 2) ? stdin : fopen(name, "r");
if (!fp) {
fprintf(stderr, "failed to open configuration file %s: %m\n", name);
return -1;
}
for (line_num = 1; fgets(buf, sizeof(buf), fp); line_num++) {
c = buf;
/* skip whitespace characters */
while (isspace(*c))
c++;
/* ignore empty lines and comments */
if (*c == '#' || *c == '\n' || *c == '\0')
continue;
line = c;
/* remove trailing whitespace characters and \n */
c += strlen(line) - 1;
while (c > line && (*c == '\n' || isspace(*c)))
*c-- = '\0';
if (parse_section_line(line, ¤t_section) == PARSED_OK) {
if (current_section == PORT_SECTION) {
char port[17];
if (1 != sscanf(line, " %16s", port)) {
fprintf(stderr, "could not parse port name on line %d\n",
line_num);
goto parse_error;
}
current_port = config_create_interface(port, cfg);
if (!current_port)
goto parse_error;
}
continue;
}
if (current_section == UC_MTAB_SECTION) {
if (parse_unicast_mtab_line(cfg, line, line_num)) {
goto parse_error;
}
continue;
}
if (current_section == UNKNOWN_SECTION) {
fprintf(stderr, "line %d is not in a section\n", line_num);
goto parse_error;
}
if (parse_setting_line(line, &option, &value)) {
fprintf(stderr, "could not parse line %d in %s section\n",
line_num, current_section == GLOBAL_SECTION ?
"global" : interface_name(current_port));
goto parse_error;
}
check_deprecated_options(&option);
parser_res = parse_item(cfg, 0, current_section == GLOBAL_SECTION ?
NULL : interface_name(current_port),
option, value);
switch (parser_res) {
case PARSED_OK:
break;
case NOT_PARSED:
fprintf(stderr, "unknown option %s at line %d in %s section\n",
option, line_num,
current_section == GLOBAL_SECTION ? "global" :
interface_name(current_port));
goto parse_error;
case BAD_VALUE:
fprintf(stderr, "%s is a bad value for option %s at line %d\n",
value, option, line_num);
goto parse_error;
case MALFORMED:
fprintf(stderr, "%s is a malformed value for option %s at line %d\n",
value, option, line_num);
goto parse_error;
case OUT_OF_RANGE:
fprintf(stderr, "%s is an out of range value for option %s at line %d\n",
value, option, line_num);
goto parse_error;
}
}
fclose(fp);
return 0;
parse_error:
fprintf(stderr, "failed to parse configuration file %s\n", name);
fclose(fp);
return -2;
}
struct interface *config_create_interface(const char *name, struct config *cfg)
{
struct interface *iface;
const char *ifname;
/* only create each interface once (by name) */
STAILQ_FOREACH(iface, &cfg->interfaces, list) {
ifname = interface_name(iface);
if (0 == strncmp(name, ifname, MAX_IFNAME_SIZE))
return iface;
}
iface = interface_create(name);
if (!iface) {
fprintf(stderr, "cannot allocate memory for a port\n");
return NULL;
}
STAILQ_INSERT_TAIL(&cfg->interfaces, iface, list);
cfg->n_interfaces++;
return iface;
}
struct config *config_create(void)
{
char buf[CONFIG_LABEL_SIZE + 8];
struct config_item *ci;
struct config *cfg;
int i;
cfg = calloc(1, sizeof(*cfg));
if (!cfg) {
return NULL;
}
STAILQ_INIT(&cfg->interfaces);
STAILQ_INIT(&cfg->unicast_master_tables);
cfg->opts = config_alloc_longopts();
if (!cfg->opts) {
free(cfg);
return NULL;
}
cfg->htab = hash_create();
if (!cfg->htab) {
free(cfg->opts);
free(cfg);
return NULL;
}
/* Populate the hash table with global defaults. */
for (i = 0; i < N_CONFIG_ITEMS; i++) {
ci = &config_tab[i];
ci->flags |= CFG_ITEM_STATIC;
snprintf(buf, sizeof(buf), "global.%s", ci->label);
if (hash_insert(cfg->htab, buf, ci)) {
fprintf(stderr, "duplicate item %s\n", ci->label);
goto fail;
}
}
/* Perform a Built In Self Test.*/
for (i = 0; i < N_CONFIG_ITEMS; i++) {
ci = &config_tab[i];
ci = config_global_item(cfg, ci->label);
if (ci != &config_tab[i]) {
fprintf(stderr, "config BIST failed at %s\n",
config_tab[i].label);
goto fail;
}
}
return cfg;
fail:
hash_destroy(cfg->htab, NULL);
free(cfg->opts);
free(cfg);
return NULL;
}
void config_destroy(struct config *cfg)
{
struct unicast_master_address *address;
struct unicast_master_table *table;
struct interface *iface;
while ((iface = STAILQ_FIRST(&cfg->interfaces))) {
STAILQ_REMOVE_HEAD(&cfg->interfaces, list);
interface_destroy(iface);
}
while ((table = STAILQ_FIRST(&cfg->unicast_master_tables))) {
while ((address = STAILQ_FIRST(&table->addrs))) {
STAILQ_REMOVE_HEAD(&table->addrs, list);
free(address);
}
if (table->peer_name) {
free(table->peer_name);
}
STAILQ_REMOVE_HEAD(&cfg->unicast_master_tables, list);
free(table);
}
hash_destroy(cfg->htab, config_item_free);
free(cfg->opts);
free(cfg);
}
double config_get_double(struct config *cfg, const char *section,
const char *option)
{
struct config_item *ci = config_find_item(cfg, section, option);
if (!ci || ci->type != CFG_TYPE_DOUBLE) {
pr_err("bug: config option %s missing or invalid!", option);
exit(-1);
}
pr_debug("config item %s.%s is %f", section, option, ci->val.d);
return ci->val.d;
}
int config_get_int(struct config *cfg, const char *section, const char *option)
{
struct config_item *ci = config_find_item(cfg, section, option);
if (!ci) {
pr_err("bug: config option %s missing!", option);
exit(-1);
}
switch (ci->type) {
case CFG_TYPE_DOUBLE:
case CFG_TYPE_STRING:
pr_err("bug: config option %s type mismatch!", option);
exit(-1);
case CFG_TYPE_INT:
case CFG_TYPE_ENUM:
break;
}
pr_debug("config item %s.%s is %d", section, option, ci->val.i);