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12#include <stdio.h>
13#include <stdlib.h>
14#include <string.h>
15
16#include <linux/can/netlink.h>
17
18#include "rt_names.h"
19#include "utils.h"
20#include "ip_common.h"
21
22static void print_usage(FILE *f)
23{
24 fprintf(f,
25 "Usage: ip link set DEVICE type can\n"
26 "\t[ bitrate BITRATE [ sample-point SAMPLE-POINT] ] |\n"
27 "\t[ tq TQ prop-seg PROP_SEG phase-seg1 PHASE-SEG1\n \t phase-seg2 PHASE-SEG2 [ sjw SJW ] ]\n"
28 "\n"
29 "\t[ dbitrate BITRATE [ dsample-point SAMPLE-POINT] ] |\n"
30 "\t[ dtq TQ dprop-seg PROP_SEG dphase-seg1 PHASE-SEG1\n \t dphase-seg2 PHASE-SEG2 [ dsjw SJW ] ]\n"
31 "\n"
32 "\t[ loopback { on | off } ]\n"
33 "\t[ listen-only { on | off } ]\n"
34 "\t[ triple-sampling { on | off } ]\n"
35 "\t[ one-shot { on | off } ]\n"
36 "\t[ berr-reporting { on | off } ]\n"
37 "\t[ fd { on | off } ]\n"
38 "\t[ fd-non-iso { on | off } ]\n"
39 "\t[ presume-ack { on | off } ]\n"
40 "\t[ cc-len8-dlc { on | off } ]\n"
41 "\n"
42 "\t[ restart-ms TIME-MS ]\n"
43 "\t[ restart ]\n"
44 "\n"
45 "\t[ termination { 0..65535 } ]\n"
46 "\n"
47 "\tWhere: BITRATE := { 1..1000000 }\n"
48 "\t SAMPLE-POINT := { 0.000..0.999 }\n"
49 "\t TQ := { NUMBER }\n"
50 "\t PROP-SEG := { 1..8 }\n"
51 "\t PHASE-SEG1 := { 1..8 }\n"
52 "\t PHASE-SEG2 := { 1..8 }\n"
53 "\t SJW := { 1..4 }\n"
54 "\t RESTART-MS := { 0 | NUMBER }\n"
55 );
56}
57
58static void usage(void)
59{
60 print_usage(stderr);
61}
62
63static int get_float(float *val, const char *arg)
64{
65 float res;
66 char *ptr;
67
68 if (!arg || !*arg)
69 return -1;
70 res = strtof(arg, &ptr);
71 if (!ptr || ptr == arg || *ptr)
72 return -1;
73 *val = res;
74 return 0;
75}
76
77static void set_ctrlmode(char *name, char *arg,
78 struct can_ctrlmode *cm, __u32 flags)
79{
80 if (strcmp(arg, "on") == 0) {
81 cm->flags |= flags;
82 } else if (strcmp(arg, "off") != 0) {
83 fprintf(stderr,
84 "Error: argument of \"%s\" must be \"on\" or \"off\", not \"%s\"\n",
85 name, arg);
86 exit(-1);
87 }
88 cm->mask |= flags;
89}
90
91static void print_ctrlmode(FILE *f, __u32 cm)
92{
93 open_json_array(PRINT_ANY, is_json_context() ? "ctrlmode" : "<");
94#define _PF(cmflag, cmname) \
95 if (cm & cmflag) { \
96 cm &= ~cmflag; \
97 print_string(PRINT_ANY, NULL, cm ? "%s," : "%s", cmname); \
98 }
99 _PF(CAN_CTRLMODE_LOOPBACK, "LOOPBACK");
100 _PF(CAN_CTRLMODE_LISTENONLY, "LISTEN-ONLY");
101 _PF(CAN_CTRLMODE_3_SAMPLES, "TRIPLE-SAMPLING");
102 _PF(CAN_CTRLMODE_ONE_SHOT, "ONE-SHOT");
103 _PF(CAN_CTRLMODE_BERR_REPORTING, "BERR-REPORTING");
104 _PF(CAN_CTRLMODE_FD, "FD");
105 _PF(CAN_CTRLMODE_FD_NON_ISO, "FD-NON-ISO");
106 _PF(CAN_CTRLMODE_PRESUME_ACK, "PRESUME-ACK");
107 _PF(CAN_CTRLMODE_CC_LEN8_DLC, "CC-LEN8-DLC");
108#undef _PF
109 if (cm)
110 print_hex(PRINT_ANY, NULL, "%x", cm);
111 close_json_array(PRINT_ANY, "> ");
112}
113
114static int can_parse_opt(struct link_util *lu, int argc, char **argv,
115 struct nlmsghdr *n)
116{
117 struct can_bittiming bt = {}, dbt = {};
118 struct can_ctrlmode cm = {0, 0};
119
120 while (argc > 0) {
121 if (matches(*argv, "bitrate") == 0) {
122 NEXT_ARG();
123 if (get_u32(&bt.bitrate, *argv, 0))
124 invarg("invalid \"bitrate\" value\n", *argv);
125 } else if (matches(*argv, "sample-point") == 0) {
126 float sp;
127
128 NEXT_ARG();
129 if (get_float(&sp, *argv))
130 invarg("invalid \"sample-point\" value\n",
131 *argv);
132 bt.sample_point = (__u32)(sp * 1000);
133 } else if (matches(*argv, "tq") == 0) {
134 NEXT_ARG();
135 if (get_u32(&bt.tq, *argv, 0))
136 invarg("invalid \"tq\" value\n", *argv);
137 } else if (matches(*argv, "prop-seg") == 0) {
138 NEXT_ARG();
139 if (get_u32(&bt.prop_seg, *argv, 0))
140 invarg("invalid \"prop-seg\" value\n", *argv);
141 } else if (matches(*argv, "phase-seg1") == 0) {
142 NEXT_ARG();
143 if (get_u32(&bt.phase_seg1, *argv, 0))
144 invarg("invalid \"phase-seg1\" value\n", *argv);
145 } else if (matches(*argv, "phase-seg2") == 0) {
146 NEXT_ARG();
147 if (get_u32(&bt.phase_seg2, *argv, 0))
148 invarg("invalid \"phase-seg2\" value\n", *argv);
149 } else if (matches(*argv, "sjw") == 0) {
150 NEXT_ARG();
151 if (get_u32(&bt.sjw, *argv, 0))
152 invarg("invalid \"sjw\" value\n", *argv);
153 } else if (matches(*argv, "dbitrate") == 0) {
154 NEXT_ARG();
155 if (get_u32(&dbt.bitrate, *argv, 0))
156 invarg("invalid \"dbitrate\" value\n", *argv);
157 } else if (matches(*argv, "dsample-point") == 0) {
158 float sp;
159
160 NEXT_ARG();
161 if (get_float(&sp, *argv))
162 invarg("invalid \"dsample-point\" value\n", *argv);
163 dbt.sample_point = (__u32)(sp * 1000);
164 } else if (matches(*argv, "dtq") == 0) {
165 NEXT_ARG();
166 if (get_u32(&dbt.tq, *argv, 0))
167 invarg("invalid \"dtq\" value\n", *argv);
168 } else if (matches(*argv, "dprop-seg") == 0) {
169 NEXT_ARG();
170 if (get_u32(&dbt.prop_seg, *argv, 0))
171 invarg("invalid \"dprop-seg\" value\n", *argv);
172 } else if (matches(*argv, "dphase-seg1") == 0) {
173 NEXT_ARG();
174 if (get_u32(&dbt.phase_seg1, *argv, 0))
175 invarg("invalid \"dphase-seg1\" value\n", *argv);
176 } else if (matches(*argv, "dphase-seg2") == 0) {
177 NEXT_ARG();
178 if (get_u32(&dbt.phase_seg2, *argv, 0))
179 invarg("invalid \"dphase-seg2\" value\n", *argv);
180 } else if (matches(*argv, "dsjw") == 0) {
181 NEXT_ARG();
182 if (get_u32(&dbt.sjw, *argv, 0))
183 invarg("invalid \"dsjw\" value\n", *argv);
184 } else if (matches(*argv, "loopback") == 0) {
185 NEXT_ARG();
186 set_ctrlmode("loopback", *argv, &cm,
187 CAN_CTRLMODE_LOOPBACK);
188 } else if (matches(*argv, "listen-only") == 0) {
189 NEXT_ARG();
190 set_ctrlmode("listen-only", *argv, &cm,
191 CAN_CTRLMODE_LISTENONLY);
192 } else if (matches(*argv, "triple-sampling") == 0) {
193 NEXT_ARG();
194 set_ctrlmode("triple-sampling", *argv, &cm,
195 CAN_CTRLMODE_3_SAMPLES);
196 } else if (matches(*argv, "one-shot") == 0) {
197 NEXT_ARG();
198 set_ctrlmode("one-shot", *argv, &cm,
199 CAN_CTRLMODE_ONE_SHOT);
200 } else if (matches(*argv, "berr-reporting") == 0) {
201 NEXT_ARG();
202 set_ctrlmode("berr-reporting", *argv, &cm,
203 CAN_CTRLMODE_BERR_REPORTING);
204 } else if (matches(*argv, "fd") == 0) {
205 NEXT_ARG();
206 set_ctrlmode("fd", *argv, &cm,
207 CAN_CTRLMODE_FD);
208 } else if (matches(*argv, "fd-non-iso") == 0) {
209 NEXT_ARG();
210 set_ctrlmode("fd-non-iso", *argv, &cm,
211 CAN_CTRLMODE_FD_NON_ISO);
212 } else if (matches(*argv, "presume-ack") == 0) {
213 NEXT_ARG();
214 set_ctrlmode("presume-ack", *argv, &cm,
215 CAN_CTRLMODE_PRESUME_ACK);
216 } else if (matches(*argv, "cc-len8-dlc") == 0) {
217 NEXT_ARG();
218 set_ctrlmode("cc-len8-dlc", *argv, &cm,
219 CAN_CTRLMODE_CC_LEN8_DLC);
220 } else if (matches(*argv, "restart") == 0) {
221 __u32 val = 1;
222
223 addattr32(n, 1024, IFLA_CAN_RESTART, val);
224 } else if (matches(*argv, "restart-ms") == 0) {
225 __u32 val;
226
227 NEXT_ARG();
228 if (get_u32(&val, *argv, 0))
229 invarg("invalid \"restart-ms\" value\n", *argv);
230 addattr32(n, 1024, IFLA_CAN_RESTART_MS, val);
231 } else if (matches(*argv, "termination") == 0) {
232 __u16 val;
233
234 NEXT_ARG();
235 if (get_u16(&val, *argv, 0))
236 invarg("invalid \"termination\" value\n",
237 *argv);
238 addattr16(n, 1024, IFLA_CAN_TERMINATION, val);
239 } else if (matches(*argv, "help") == 0) {
240 usage();
241 return -1;
242 } else {
243 fprintf(stderr, "can: unknown option \"%s\"\n", *argv);
244 usage();
245 return -1;
246 }
247 argc--, argv++;
248 }
249
250 if (bt.bitrate || bt.tq)
251 addattr_l(n, 1024, IFLA_CAN_BITTIMING, &bt, sizeof(bt));
252 if (dbt.bitrate || dbt.tq)
253 addattr_l(n, 1024, IFLA_CAN_DATA_BITTIMING, &dbt, sizeof(dbt));
254 if (cm.mask)
255 addattr_l(n, 1024, IFLA_CAN_CTRLMODE, &cm, sizeof(cm));
256
257 return 0;
258}
259
260static const char *can_state_names[CAN_STATE_MAX] = {
261 [CAN_STATE_ERROR_ACTIVE] = "ERROR-ACTIVE",
262 [CAN_STATE_ERROR_WARNING] = "ERROR-WARNING",
263 [CAN_STATE_ERROR_PASSIVE] = "ERROR-PASSIVE",
264 [CAN_STATE_BUS_OFF] = "BUS-OFF",
265 [CAN_STATE_STOPPED] = "STOPPED",
266 [CAN_STATE_SLEEPING] = "SLEEPING"
267};
268
269static void can_print_json_timing_min_max(const char *attr, int min, int max)
270{
271 open_json_object(attr);
272 print_int(PRINT_JSON, "min", NULL, min);
273 print_int(PRINT_JSON, "max", NULL, max);
274 close_json_object();
275}
276
277static void can_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
278{
279 if (!tb)
280 return;
281
282 if (tb[IFLA_CAN_CTRLMODE]) {
283 struct can_ctrlmode *cm = RTA_DATA(tb[IFLA_CAN_CTRLMODE]);
284
285 if (cm->flags)
286 print_ctrlmode(f, cm->flags);
287 }
288
289 if (tb[IFLA_CAN_STATE]) {
290 uint32_t state = rta_getattr_u32(tb[IFLA_CAN_STATE]);
291
292 print_string(PRINT_ANY, "state", "state %s ", state < CAN_STATE_MAX ?
293 can_state_names[state] : "UNKNOWN");
294 }
295
296 if (tb[IFLA_CAN_BERR_COUNTER]) {
297 struct can_berr_counter *bc =
298 RTA_DATA(tb[IFLA_CAN_BERR_COUNTER]);
299
300 if (is_json_context()) {
301 open_json_object("berr_counter");
302 print_int(PRINT_JSON, "tx", NULL, bc->txerr);
303 print_int(PRINT_JSON, "rx", NULL, bc->rxerr);
304 close_json_object();
305 } else {
306 fprintf(f, "(berr-counter tx %d rx %d) ",
307 bc->txerr, bc->rxerr);
308 }
309 }
310
311 if (tb[IFLA_CAN_RESTART_MS]) {
312 __u32 *restart_ms = RTA_DATA(tb[IFLA_CAN_RESTART_MS]);
313
314 print_int(PRINT_ANY,
315 "restart_ms",
316 "restart-ms %d ",
317 *restart_ms);
318 }
319
320
321 if (tb[IFLA_CAN_BITTIMING] && !tb[IFLA_CAN_BITRATE_CONST]) {
322 struct can_bittiming *bt = RTA_DATA(tb[IFLA_CAN_BITTIMING]);
323
324 if (is_json_context()) {
325 json_writer_t *jw;
326
327 open_json_object("bittiming");
328 print_int(PRINT_ANY, "bitrate", NULL, bt->bitrate);
329 jw = get_json_writer();
330 jsonw_name(jw, "sample_point");
331 jsonw_printf(jw, "%.3f",
332 (float) bt->sample_point / 1000);
333 print_int(PRINT_ANY, "tq", NULL, bt->tq);
334 print_int(PRINT_ANY, "prop_seg", NULL, bt->prop_seg);
335 print_int(PRINT_ANY, "phase_seg1",
336 NULL, bt->phase_seg1);
337 print_int(PRINT_ANY, "phase_seg2",
338 NULL, bt->phase_seg2);
339 print_int(PRINT_ANY, "sjw", NULL, bt->sjw);
340 close_json_object();
341 } else {
342 fprintf(f, "\n bitrate %d sample-point %.3f ",
343 bt->bitrate, (float) bt->sample_point / 1000.);
344 fprintf(f,
345 "\n tq %d prop-seg %d phase-seg1 %d phase-seg2 %d sjw %d",
346 bt->tq, bt->prop_seg,
347 bt->phase_seg1, bt->phase_seg2,
348 bt->sjw);
349 }
350 }
351
352
353 if (tb[IFLA_CAN_BITTIMING_CONST] && !tb[IFLA_CAN_BITRATE_CONST]) {
354 struct can_bittiming_const *btc =
355 RTA_DATA(tb[IFLA_CAN_BITTIMING_CONST]);
356
357 if (is_json_context()) {
358 open_json_object("bittiming_const");
359 print_string(PRINT_JSON, "name", NULL, btc->name);
360 can_print_json_timing_min_max("tseg1",
361 btc->tseg1_min,
362 btc->tseg1_max);
363 can_print_json_timing_min_max("tseg2",
364 btc->tseg2_min,
365 btc->tseg2_max);
366 can_print_json_timing_min_max("sjw", 1, btc->sjw_max);
367 can_print_json_timing_min_max("brp",
368 btc->brp_min,
369 btc->brp_max);
370 print_int(PRINT_JSON, "brp_inc", NULL, btc->brp_inc);
371 close_json_object();
372 } else {
373 fprintf(f, "\n %s: tseg1 %d..%d tseg2 %d..%d "
374 "sjw 1..%d brp %d..%d brp-inc %d",
375 btc->name, btc->tseg1_min, btc->tseg1_max,
376 btc->tseg2_min, btc->tseg2_max, btc->sjw_max,
377 btc->brp_min, btc->brp_max, btc->brp_inc);
378 }
379 }
380
381 if (tb[IFLA_CAN_BITRATE_CONST]) {
382 __u32 *bitrate_const = RTA_DATA(tb[IFLA_CAN_BITRATE_CONST]);
383 int bitrate_cnt = RTA_PAYLOAD(tb[IFLA_CAN_BITRATE_CONST]) /
384 sizeof(*bitrate_const);
385 int i;
386 __u32 bitrate = 0;
387
388 if (tb[IFLA_CAN_BITTIMING]) {
389 struct can_bittiming *bt =
390 RTA_DATA(tb[IFLA_CAN_BITTIMING]);
391 bitrate = bt->bitrate;
392 }
393
394 if (is_json_context()) {
395 print_uint(PRINT_JSON,
396 "bittiming_bitrate",
397 NULL, bitrate);
398 open_json_array(PRINT_JSON, "bitrate_const");
399 for (i = 0; i < bitrate_cnt; ++i)
400 print_uint(PRINT_JSON, NULL, NULL,
401 bitrate_const[i]);
402 close_json_array(PRINT_JSON, NULL);
403 } else {
404 fprintf(f, "\n bitrate %u", bitrate);
405 fprintf(f, "\n [");
406
407 for (i = 0; i < bitrate_cnt - 1; ++i) {
408
409 if (!(i % 6) && i)
410 fprintf(f, "\n ");
411
412 fprintf(f, "%8u, ", bitrate_const[i]);
413 }
414
415 if (!(i % 6) && i)
416 fprintf(f, "\n ");
417 fprintf(f, "%8u ]", bitrate_const[i]);
418 }
419 }
420
421
422 if (tb[IFLA_CAN_DATA_BITTIMING] && !tb[IFLA_CAN_DATA_BITRATE_CONST]) {
423 struct can_bittiming *dbt =
424 RTA_DATA(tb[IFLA_CAN_DATA_BITTIMING]);
425
426 if (is_json_context()) {
427 json_writer_t *jw;
428
429 open_json_object("data_bittiming");
430 print_int(PRINT_JSON, "bitrate", NULL, dbt->bitrate);
431 jw = get_json_writer();
432 jsonw_name(jw, "sample_point");
433 jsonw_printf(jw, "%.3f",
434 (float) dbt->sample_point / 1000.);
435 print_int(PRINT_JSON, "tq", NULL, dbt->tq);
436 print_int(PRINT_JSON, "prop_seg", NULL, dbt->prop_seg);
437 print_int(PRINT_JSON, "phase_seg1",
438 NULL, dbt->phase_seg1);
439 print_int(PRINT_JSON, "phase_seg2",
440 NULL, dbt->phase_seg2);
441 print_int(PRINT_JSON, "sjw", NULL, dbt->sjw);
442 close_json_object();
443 } else {
444 fprintf(f, "\n dbitrate %d dsample-point %.3f ",
445 dbt->bitrate,
446 (float) dbt->sample_point / 1000.);
447 fprintf(f, "\n dtq %d dprop-seg %d dphase-seg1 %d "
448 "dphase-seg2 %d dsjw %d",
449 dbt->tq, dbt->prop_seg, dbt->phase_seg1,
450 dbt->phase_seg2, dbt->sjw);
451 }
452 }
453
454
455 if (tb[IFLA_CAN_DATA_BITTIMING_CONST] &&
456 !tb[IFLA_CAN_DATA_BITRATE_CONST]) {
457 struct can_bittiming_const *dbtc =
458 RTA_DATA(tb[IFLA_CAN_DATA_BITTIMING_CONST]);
459
460 if (is_json_context()) {
461 open_json_object("data_bittiming_const");
462 print_string(PRINT_JSON, "name", NULL, dbtc->name);
463 can_print_json_timing_min_max("tseg1",
464 dbtc->tseg1_min,
465 dbtc->tseg1_max);
466 can_print_json_timing_min_max("tseg2",
467 dbtc->tseg2_min,
468 dbtc->tseg2_max);
469 can_print_json_timing_min_max("sjw", 1, dbtc->sjw_max);
470 can_print_json_timing_min_max("brp",
471 dbtc->brp_min,
472 dbtc->brp_max);
473
474 print_int(PRINT_JSON, "brp_inc", NULL, dbtc->brp_inc);
475 close_json_object();
476 } else {
477 fprintf(f, "\n %s: dtseg1 %d..%d dtseg2 %d..%d "
478 "dsjw 1..%d dbrp %d..%d dbrp-inc %d",
479 dbtc->name, dbtc->tseg1_min, dbtc->tseg1_max,
480 dbtc->tseg2_min, dbtc->tseg2_max, dbtc->sjw_max,
481 dbtc->brp_min, dbtc->brp_max, dbtc->brp_inc);
482 }
483 }
484
485 if (tb[IFLA_CAN_DATA_BITRATE_CONST]) {
486 __u32 *dbitrate_const =
487 RTA_DATA(tb[IFLA_CAN_DATA_BITRATE_CONST]);
488 int dbitrate_cnt =
489 RTA_PAYLOAD(tb[IFLA_CAN_DATA_BITRATE_CONST]) /
490 sizeof(*dbitrate_const);
491 int i;
492 __u32 dbitrate = 0;
493
494 if (tb[IFLA_CAN_DATA_BITTIMING]) {
495 struct can_bittiming *dbt =
496 RTA_DATA(tb[IFLA_CAN_DATA_BITTIMING]);
497 dbitrate = dbt->bitrate;
498 }
499
500 if (is_json_context()) {
501 print_uint(PRINT_JSON, "data_bittiming_bitrate",
502 NULL, dbitrate);
503 open_json_array(PRINT_JSON, "data_bitrate_const");
504 for (i = 0; i < dbitrate_cnt; ++i)
505 print_uint(PRINT_JSON, NULL, NULL,
506 dbitrate_const[i]);
507 close_json_array(PRINT_JSON, NULL);
508 } else {
509 fprintf(f, "\n dbitrate %u", dbitrate);
510 fprintf(f, "\n [");
511
512 for (i = 0; i < dbitrate_cnt - 1; ++i) {
513
514 if (!(i % 6) && i)
515 fprintf(f, "\n ");
516
517 fprintf(f, "%8u, ", dbitrate_const[i]);
518 }
519
520 if (!(i % 6) && i)
521 fprintf(f, "\n ");
522 fprintf(f, "%8u ]", dbitrate_const[i]);
523 }
524 }
525
526 if (tb[IFLA_CAN_TERMINATION_CONST] && tb[IFLA_CAN_TERMINATION]) {
527 __u16 *trm = RTA_DATA(tb[IFLA_CAN_TERMINATION]);
528 __u16 *trm_const = RTA_DATA(tb[IFLA_CAN_TERMINATION_CONST]);
529 int trm_cnt = RTA_PAYLOAD(tb[IFLA_CAN_TERMINATION_CONST]) /
530 sizeof(*trm_const);
531 int i;
532
533 if (is_json_context()) {
534 print_hu(PRINT_JSON, "termination", NULL, *trm);
535 open_json_array(PRINT_JSON, "termination_const");
536 for (i = 0; i < trm_cnt; ++i)
537 print_hu(PRINT_JSON, NULL, NULL, trm_const[i]);
538 close_json_array(PRINT_JSON, NULL);
539 } else {
540 fprintf(f, "\n termination %hu [ ", *trm);
541
542 for (i = 0; i < trm_cnt - 1; ++i)
543 fprintf(f, "%hu, ", trm_const[i]);
544
545 fprintf(f, "%hu ]", trm_const[i]);
546 }
547 }
548
549 if (tb[IFLA_CAN_CLOCK]) {
550 struct can_clock *clock = RTA_DATA(tb[IFLA_CAN_CLOCK]);
551
552 print_int(PRINT_ANY,
553 "clock",
554 "\n clock %d ",
555 clock->freq);
556 }
557
558}
559
560static void can_print_xstats(struct link_util *lu,
561 FILE *f, struct rtattr *xstats)
562{
563 struct can_device_stats *stats;
564
565 if (xstats && RTA_PAYLOAD(xstats) == sizeof(*stats)) {
566 stats = RTA_DATA(xstats);
567
568 if (is_json_context()) {
569 print_int(PRINT_JSON, "restarts",
570 NULL, stats->restarts);
571 print_int(PRINT_JSON, "bus_error",
572 NULL, stats->bus_error);
573 print_int(PRINT_JSON, "arbitration_lost",
574 NULL, stats->arbitration_lost);
575 print_int(PRINT_JSON, "error_warning",
576 NULL, stats->error_warning);
577 print_int(PRINT_JSON, "error_passive",
578 NULL, stats->error_passive);
579 print_int(PRINT_JSON, "bus_off", NULL, stats->bus_off);
580 } else {
581 fprintf(f, "\n re-started bus-errors arbit-lost "
582 "error-warn error-pass bus-off");
583 fprintf(f, "\n %-10d %-10d %-10d %-10d %-10d %-10d",
584 stats->restarts, stats->bus_error,
585 stats->arbitration_lost, stats->error_warning,
586 stats->error_passive, stats->bus_off);
587 }
588 }
589}
590
591static void can_print_help(struct link_util *lu, int argc, char **argv,
592 FILE *f)
593{
594 print_usage(f);
595}
596
597struct link_util can_link_util = {
598 .id = "can",
599 .maxattr = IFLA_CAN_MAX,
600 .parse_opt = can_parse_opt,
601 .print_opt = can_print_opt,
602 .print_xstats = can_print_xstats,
603 .print_help = can_print_help,
604};
605
