]>
Commit | Line | Data |
---|---|---|
1 | /* | |
2 | * iplink_can.c CAN device support | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License | |
6 | * as published by the Free Software Foundation; either version | |
7 | * 2 of the License, or (at your option) any later version. | |
8 | * | |
9 | * Authors: Wolfgang Grandegger <wg@grandegger.com> | |
10 | */ | |
11 | ||
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 | ||
22 | static 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 | ||
58 | static void usage(void) | |
59 | { | |
60 | print_usage(stderr); | |
61 | } | |
62 | ||
63 | static 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 | ||
77 | static 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 | ||
91 | static 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 | ||
114 | static 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 | ||
260 | static 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 | ||
269 | static 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 | ||
277 | static 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 | /* bittiming is irrelevant if fixed bitrate is defined */ | |
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 | /* bittiming const is irrelevant if fixed bitrate is defined */ | |
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 | /* This will keep lines below 80 signs */ | |
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 | /* data bittiming is irrelevant if fixed bitrate is defined */ | |
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 | /* data bittiming const is irrelevant if fixed bitrate is defined */ | |
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 | /* This will keep lines below 80 signs */ | |
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 | ||
560 | static 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 | ||
591 | static void can_print_help(struct link_util *lu, int argc, char **argv, | |
592 | FILE *f) | |
593 | { | |
594 | print_usage(f); | |
595 | } | |
596 | ||
597 | struct 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 | }; |