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1 | // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB | |
2 | /* | |
3 | * utils.c RDMA tool | |
4 | * Authors: Leon Romanovsky <leonro@mellanox.com> | |
5 | */ | |
6 | ||
7 | #include "rdma.h" | |
8 | #include <ctype.h> | |
9 | #include <inttypes.h> | |
10 | ||
11 | int rd_argc(struct rd *rd) | |
12 | { | |
13 | return rd->argc; | |
14 | } | |
15 | ||
16 | char *rd_argv(struct rd *rd) | |
17 | { | |
18 | if (!rd_argc(rd)) | |
19 | return NULL; | |
20 | return *rd->argv; | |
21 | } | |
22 | ||
23 | int strcmpx(const char *str1, const char *str2) | |
24 | { | |
25 | if (strlen(str1) > strlen(str2)) | |
26 | return -1; | |
27 | return strncmp(str1, str2, strlen(str1)); | |
28 | } | |
29 | ||
30 | static bool rd_argv_match(struct rd *rd, const char *pattern) | |
31 | { | |
32 | if (!rd_argc(rd)) | |
33 | return false; | |
34 | return strcmpx(rd_argv(rd), pattern) == 0; | |
35 | } | |
36 | ||
37 | void rd_arg_inc(struct rd *rd) | |
38 | { | |
39 | if (!rd_argc(rd)) | |
40 | return; | |
41 | rd->argc--; | |
42 | rd->argv++; | |
43 | } | |
44 | ||
45 | bool rd_no_arg(struct rd *rd) | |
46 | { | |
47 | return rd_argc(rd) == 0; | |
48 | } | |
49 | ||
50 | /* | |
51 | * Possible input:output | |
52 | * dev/port | first port | is_dump_all | |
53 | * mlx5_1 | 0 | true | |
54 | * mlx5_1/ | 0 | true | |
55 | * mlx5_1/0 | 0 | false | |
56 | * mlx5_1/1 | 1 | false | |
57 | * mlx5_1/- | 0 | false | |
58 | * | |
59 | * In strict port mode, a non-0 port must be provided | |
60 | */ | |
61 | static int get_port_from_argv(struct rd *rd, uint32_t *port, | |
62 | bool *is_dump_all, bool strict_port) | |
63 | { | |
64 | char *slash; | |
65 | ||
66 | *port = 0; | |
67 | *is_dump_all = strict_port ? false : true; | |
68 | ||
69 | slash = strchr(rd_argv(rd), '/'); | |
70 | /* if no port found, return 0 */ | |
71 | if (slash++) { | |
72 | if (*slash == '-') { | |
73 | if (strict_port) | |
74 | return -EINVAL; | |
75 | *is_dump_all = false; | |
76 | return 0; | |
77 | } | |
78 | ||
79 | if (isdigit(*slash)) { | |
80 | *is_dump_all = false; | |
81 | *port = atoi(slash); | |
82 | } | |
83 | if (!*port && strlen(slash)) | |
84 | return -EINVAL; | |
85 | } | |
86 | if (strict_port && (*port == 0)) | |
87 | return -EINVAL; | |
88 | ||
89 | return 0; | |
90 | } | |
91 | ||
92 | static struct dev_map *dev_map_alloc(const char *dev_name) | |
93 | { | |
94 | struct dev_map *dev_map; | |
95 | ||
96 | dev_map = calloc(1, sizeof(*dev_map)); | |
97 | if (!dev_map) | |
98 | return NULL; | |
99 | dev_map->dev_name = strdup(dev_name); | |
100 | if (!dev_map->dev_name) { | |
101 | free(dev_map); | |
102 | return NULL; | |
103 | } | |
104 | ||
105 | return dev_map; | |
106 | } | |
107 | ||
108 | static void dev_map_cleanup(struct rd *rd) | |
109 | { | |
110 | struct dev_map *dev_map, *tmp; | |
111 | ||
112 | list_for_each_entry_safe(dev_map, tmp, | |
113 | &rd->dev_map_list, list) { | |
114 | list_del(&dev_map->list); | |
115 | free(dev_map->dev_name); | |
116 | free(dev_map); | |
117 | } | |
118 | } | |
119 | ||
120 | static int add_filter(struct rd *rd, char *key, char *value, | |
121 | const struct filters valid_filters[]) | |
122 | { | |
123 | char cset[] = "1234567890,-"; | |
124 | struct filter_entry *fe; | |
125 | bool key_found = false; | |
126 | int idx = 0; | |
127 | char *endp; | |
128 | int ret; | |
129 | ||
130 | fe = calloc(1, sizeof(*fe)); | |
131 | if (!fe) | |
132 | return -ENOMEM; | |
133 | ||
134 | while (idx < MAX_NUMBER_OF_FILTERS && valid_filters[idx].name) { | |
135 | if (!strcmpx(key, valid_filters[idx].name)) { | |
136 | key_found = true; | |
137 | break; | |
138 | } | |
139 | idx++; | |
140 | } | |
141 | if (!key_found) { | |
142 | pr_err("Unsupported filter option: %s\n", key); | |
143 | ret = -EINVAL; | |
144 | goto err; | |
145 | } | |
146 | ||
147 | /* | |
148 | * Check the filter validity, not optimal, but works | |
149 | * | |
150 | * Actually, there are three types of filters | |
151 | * numeric - for example PID or QPN | |
152 | * string - for example states | |
153 | * link - user requested to filter on specific link | |
154 | * e.g. mlx5_1/1, mlx5_1/-, mlx5_1 ... | |
155 | */ | |
156 | if (valid_filters[idx].is_number && | |
157 | strspn(value, cset) != strlen(value)) { | |
158 | pr_err("%s filter accepts \"%s\" characters only\n", key, cset); | |
159 | ret = -EINVAL; | |
160 | goto err; | |
161 | } | |
162 | ||
163 | fe->key = strdup(key); | |
164 | fe->value = strdup(value); | |
165 | if (!fe->key || !fe->value) { | |
166 | ret = -ENOMEM; | |
167 | goto err_alloc; | |
168 | } | |
169 | ||
170 | errno = 0; | |
171 | strtol(fe->value, &endp, 10); | |
172 | if (valid_filters[idx].is_doit && !errno && *endp == '\0') | |
173 | fe->is_doit = true; | |
174 | ||
175 | for (idx = 0; idx < strlen(fe->value); idx++) | |
176 | fe->value[idx] = tolower(fe->value[idx]); | |
177 | ||
178 | list_add_tail(&fe->list, &rd->filter_list); | |
179 | return 0; | |
180 | ||
181 | err_alloc: | |
182 | free(fe->value); | |
183 | free(fe->key); | |
184 | err: | |
185 | free(fe); | |
186 | return ret; | |
187 | } | |
188 | ||
189 | bool rd_doit_index(struct rd *rd, uint32_t *idx) | |
190 | { | |
191 | struct filter_entry *fe; | |
192 | ||
193 | list_for_each_entry(fe, &rd->filter_list, list) { | |
194 | if (fe->is_doit) { | |
195 | *idx = atoi(fe->value); | |
196 | return true; | |
197 | } | |
198 | } | |
199 | ||
200 | return false; | |
201 | } | |
202 | ||
203 | int rd_build_filter(struct rd *rd, const struct filters valid_filters[]) | |
204 | { | |
205 | int ret = 0; | |
206 | int idx = 0; | |
207 | ||
208 | if (!valid_filters || !rd_argc(rd)) | |
209 | goto out; | |
210 | ||
211 | if (rd_argc(rd) == 1) { | |
212 | pr_err("No filter data was supplied to filter option %s\n", rd_argv(rd)); | |
213 | ret = -EINVAL; | |
214 | goto out; | |
215 | } | |
216 | ||
217 | if (rd_argc(rd) % 2) { | |
218 | pr_err("There is filter option without data\n"); | |
219 | ret = -EINVAL; | |
220 | goto out; | |
221 | } | |
222 | ||
223 | while (idx != rd_argc(rd)) { | |
224 | /* | |
225 | * We can do micro-optimization and skip "dev" | |
226 | * and "link" filters, but it is not worth of it. | |
227 | */ | |
228 | ret = add_filter(rd, *(rd->argv + idx), | |
229 | *(rd->argv + idx + 1), valid_filters); | |
230 | if (ret) | |
231 | goto out; | |
232 | idx += 2; | |
233 | } | |
234 | ||
235 | out: | |
236 | return ret; | |
237 | } | |
238 | ||
239 | static bool rd_check_is_key_exist(struct rd *rd, const char *key) | |
240 | { | |
241 | struct filter_entry *fe; | |
242 | ||
243 | list_for_each_entry(fe, &rd->filter_list, list) { | |
244 | if (!strcmpx(fe->key, key)) | |
245 | return true; | |
246 | } | |
247 | ||
248 | return false; | |
249 | } | |
250 | ||
251 | /* | |
252 | * Check if string entry is filtered: | |
253 | * * key doesn't exist -> user didn't request -> not filtered | |
254 | */ | |
255 | static bool rd_check_is_string_filtered(struct rd *rd, const char *key, | |
256 | const char *val) | |
257 | { | |
258 | bool key_is_filtered = false; | |
259 | struct filter_entry *fe; | |
260 | char *p = NULL; | |
261 | char *str; | |
262 | ||
263 | list_for_each_entry(fe, &rd->filter_list, list) { | |
264 | if (!strcmpx(fe->key, key)) { | |
265 | /* We found the key */ | |
266 | p = strdup(fe->value); | |
267 | key_is_filtered = true; | |
268 | if (!p) { | |
269 | /* | |
270 | * Something extremely wrong if we fail | |
271 | * to allocate small amount of bytes. | |
272 | */ | |
273 | pr_err("Found key, but failed to allocate memory to store value\n"); | |
274 | return key_is_filtered; | |
275 | } | |
276 | ||
277 | /* | |
278 | * Need to check if value in range | |
279 | * It can come in the following formats | |
280 | * and their permutations: | |
281 | * str | |
282 | * str1,str2 | |
283 | */ | |
284 | str = strtok(p, ","); | |
285 | while (str) { | |
286 | if (strlen(str) == strlen(val) && | |
287 | !strcasecmp(str, val)) { | |
288 | key_is_filtered = false; | |
289 | goto out; | |
290 | } | |
291 | str = strtok(NULL, ","); | |
292 | } | |
293 | goto out; | |
294 | } | |
295 | } | |
296 | ||
297 | out: | |
298 | free(p); | |
299 | return key_is_filtered; | |
300 | } | |
301 | ||
302 | /* | |
303 | * Check if key is filtered: | |
304 | * key doesn't exist -> user didn't request -> not filtered | |
305 | */ | |
306 | static bool rd_check_is_filtered(struct rd *rd, const char *key, uint32_t val) | |
307 | { | |
308 | bool key_is_filtered = false; | |
309 | struct filter_entry *fe; | |
310 | ||
311 | list_for_each_entry(fe, &rd->filter_list, list) { | |
312 | uint32_t left_val = 0, fe_value = 0; | |
313 | bool range_check = false; | |
314 | char *p = fe->value; | |
315 | ||
316 | if (!strcmpx(fe->key, key)) { | |
317 | /* We found the key */ | |
318 | key_is_filtered = true; | |
319 | /* | |
320 | * Need to check if value in range | |
321 | * It can come in the following formats | |
322 | * (and their permutations): | |
323 | * numb | |
324 | * numb1,numb2 | |
325 | * ,numb1,numb2 | |
326 | * numb1-numb2 | |
327 | * numb1,numb2-numb3,numb4-numb5 | |
328 | */ | |
329 | while (*p) { | |
330 | if (isdigit(*p)) { | |
331 | fe_value = strtol(p, &p, 10); | |
332 | if (fe_value == val || | |
333 | (range_check && left_val < val && | |
334 | val < fe_value)) { | |
335 | key_is_filtered = false; | |
336 | goto out; | |
337 | } | |
338 | range_check = false; | |
339 | } else { | |
340 | if (*p == '-') { | |
341 | left_val = fe_value; | |
342 | range_check = true; | |
343 | } | |
344 | p++; | |
345 | } | |
346 | } | |
347 | goto out; | |
348 | } | |
349 | } | |
350 | ||
351 | out: | |
352 | return key_is_filtered; | |
353 | } | |
354 | ||
355 | bool rd_is_filtered_attr(struct rd *rd, const char *key, uint32_t val, | |
356 | struct nlattr *attr) | |
357 | { | |
358 | if (!attr) | |
359 | return rd_check_is_key_exist(rd, key); | |
360 | ||
361 | return rd_check_is_filtered(rd, key, val); | |
362 | } | |
363 | ||
364 | bool rd_is_string_filtered_attr(struct rd *rd, const char *key, const char *val, | |
365 | struct nlattr *attr) | |
366 | { | |
367 | if (!attr) | |
368 | rd_check_is_key_exist(rd, key); | |
369 | ||
370 | return rd_check_is_string_filtered(rd, key, val); | |
371 | } | |
372 | ||
373 | static void filters_cleanup(struct rd *rd) | |
374 | { | |
375 | struct filter_entry *fe, *tmp; | |
376 | ||
377 | list_for_each_entry_safe(fe, tmp, | |
378 | &rd->filter_list, list) { | |
379 | list_del(&fe->list); | |
380 | free(fe->key); | |
381 | free(fe->value); | |
382 | free(fe); | |
383 | } | |
384 | } | |
385 | ||
386 | static const enum mnl_attr_data_type nldev_policy[RDMA_NLDEV_ATTR_MAX] = { | |
387 | [RDMA_NLDEV_ATTR_DEV_INDEX] = MNL_TYPE_U32, | |
388 | [RDMA_NLDEV_ATTR_DEV_NAME] = MNL_TYPE_NUL_STRING, | |
389 | [RDMA_NLDEV_ATTR_PORT_INDEX] = MNL_TYPE_U32, | |
390 | [RDMA_NLDEV_ATTR_CAP_FLAGS] = MNL_TYPE_U64, | |
391 | [RDMA_NLDEV_ATTR_FW_VERSION] = MNL_TYPE_NUL_STRING, | |
392 | [RDMA_NLDEV_ATTR_NODE_GUID] = MNL_TYPE_U64, | |
393 | [RDMA_NLDEV_ATTR_SYS_IMAGE_GUID] = MNL_TYPE_U64, | |
394 | [RDMA_NLDEV_ATTR_LID] = MNL_TYPE_U32, | |
395 | [RDMA_NLDEV_ATTR_SM_LID] = MNL_TYPE_U32, | |
396 | [RDMA_NLDEV_ATTR_LMC] = MNL_TYPE_U8, | |
397 | [RDMA_NLDEV_ATTR_PORT_STATE] = MNL_TYPE_U8, | |
398 | [RDMA_NLDEV_ATTR_PORT_PHYS_STATE] = MNL_TYPE_U8, | |
399 | [RDMA_NLDEV_ATTR_DEV_NODE_TYPE] = MNL_TYPE_U8, | |
400 | [RDMA_NLDEV_ATTR_RES_SUMMARY] = MNL_TYPE_NESTED, | |
401 | [RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY] = MNL_TYPE_NESTED, | |
402 | [RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_NAME] = MNL_TYPE_NUL_STRING, | |
403 | [RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_CURR] = MNL_TYPE_U64, | |
404 | [RDMA_NLDEV_ATTR_RES_QP] = MNL_TYPE_NESTED, | |
405 | [RDMA_NLDEV_ATTR_RES_QP_ENTRY] = MNL_TYPE_NESTED, | |
406 | [RDMA_NLDEV_ATTR_RES_LQPN] = MNL_TYPE_U32, | |
407 | [RDMA_NLDEV_ATTR_RES_RQPN] = MNL_TYPE_U32, | |
408 | [RDMA_NLDEV_ATTR_RES_RQ_PSN] = MNL_TYPE_U32, | |
409 | [RDMA_NLDEV_ATTR_RES_SQ_PSN] = MNL_TYPE_U32, | |
410 | [RDMA_NLDEV_ATTR_RES_PATH_MIG_STATE] = MNL_TYPE_U8, | |
411 | [RDMA_NLDEV_ATTR_RES_TYPE] = MNL_TYPE_U8, | |
412 | [RDMA_NLDEV_ATTR_RES_STATE] = MNL_TYPE_U8, | |
413 | [RDMA_NLDEV_ATTR_RES_PID] = MNL_TYPE_U32, | |
414 | [RDMA_NLDEV_ATTR_RES_KERN_NAME] = MNL_TYPE_NUL_STRING, | |
415 | [RDMA_NLDEV_ATTR_RES_CM_ID] = MNL_TYPE_NESTED, | |
416 | [RDMA_NLDEV_ATTR_RES_CM_ID_ENTRY] = MNL_TYPE_NESTED, | |
417 | [RDMA_NLDEV_ATTR_RES_PS] = MNL_TYPE_U32, | |
418 | [RDMA_NLDEV_ATTR_RES_SRC_ADDR] = MNL_TYPE_UNSPEC, | |
419 | [RDMA_NLDEV_ATTR_RES_DST_ADDR] = MNL_TYPE_UNSPEC, | |
420 | [RDMA_NLDEV_ATTR_RES_CQ] = MNL_TYPE_NESTED, | |
421 | [RDMA_NLDEV_ATTR_RES_CQ_ENTRY] = MNL_TYPE_NESTED, | |
422 | [RDMA_NLDEV_ATTR_RES_CQE] = MNL_TYPE_U32, | |
423 | [RDMA_NLDEV_ATTR_RES_USECNT] = MNL_TYPE_U64, | |
424 | [RDMA_NLDEV_ATTR_RES_POLL_CTX] = MNL_TYPE_U8, | |
425 | [RDMA_NLDEV_ATTR_RES_MR] = MNL_TYPE_NESTED, | |
426 | [RDMA_NLDEV_ATTR_RES_MR_ENTRY] = MNL_TYPE_NESTED, | |
427 | [RDMA_NLDEV_ATTR_RES_RKEY] = MNL_TYPE_U32, | |
428 | [RDMA_NLDEV_ATTR_RES_LKEY] = MNL_TYPE_U32, | |
429 | [RDMA_NLDEV_ATTR_RES_IOVA] = MNL_TYPE_U64, | |
430 | [RDMA_NLDEV_ATTR_RES_MRLEN] = MNL_TYPE_U64, | |
431 | [RDMA_NLDEV_ATTR_NDEV_INDEX] = MNL_TYPE_U32, | |
432 | [RDMA_NLDEV_ATTR_NDEV_NAME] = MNL_TYPE_NUL_STRING, | |
433 | [RDMA_NLDEV_ATTR_DRIVER] = MNL_TYPE_NESTED, | |
434 | [RDMA_NLDEV_ATTR_DRIVER_ENTRY] = MNL_TYPE_NESTED, | |
435 | [RDMA_NLDEV_ATTR_DRIVER_STRING] = MNL_TYPE_NUL_STRING, | |
436 | [RDMA_NLDEV_ATTR_DRIVER_PRINT_TYPE] = MNL_TYPE_U8, | |
437 | [RDMA_NLDEV_ATTR_DRIVER_S32] = MNL_TYPE_U32, | |
438 | [RDMA_NLDEV_ATTR_DRIVER_U32] = MNL_TYPE_U32, | |
439 | [RDMA_NLDEV_ATTR_DRIVER_S64] = MNL_TYPE_U64, | |
440 | [RDMA_NLDEV_ATTR_DRIVER_U64] = MNL_TYPE_U64, | |
441 | [RDMA_NLDEV_SYS_ATTR_NETNS_MODE] = MNL_TYPE_U8, | |
442 | [RDMA_NLDEV_ATTR_STAT_COUNTER] = MNL_TYPE_NESTED, | |
443 | [RDMA_NLDEV_ATTR_STAT_COUNTER_ENTRY] = MNL_TYPE_NESTED, | |
444 | [RDMA_NLDEV_ATTR_STAT_COUNTER_ID] = MNL_TYPE_U32, | |
445 | [RDMA_NLDEV_ATTR_STAT_HWCOUNTERS] = MNL_TYPE_NESTED, | |
446 | [RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY] = MNL_TYPE_NESTED, | |
447 | [RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_NAME] = MNL_TYPE_NUL_STRING, | |
448 | [RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_VALUE] = MNL_TYPE_U64, | |
449 | [RDMA_NLDEV_ATTR_STAT_MODE] = MNL_TYPE_U32, | |
450 | [RDMA_NLDEV_ATTR_STAT_RES] = MNL_TYPE_U32, | |
451 | [RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK] = MNL_TYPE_U32, | |
452 | [RDMA_NLDEV_ATTR_DEV_DIM] = MNL_TYPE_U8, | |
453 | }; | |
454 | ||
455 | int rd_attr_check(const struct nlattr *attr, int *typep) | |
456 | { | |
457 | int type; | |
458 | ||
459 | if (mnl_attr_type_valid(attr, RDMA_NLDEV_ATTR_MAX) < 0) | |
460 | return MNL_CB_ERROR; | |
461 | ||
462 | type = mnl_attr_get_type(attr); | |
463 | ||
464 | if (mnl_attr_validate(attr, nldev_policy[type]) < 0) | |
465 | return MNL_CB_ERROR; | |
466 | ||
467 | *typep = nldev_policy[type]; | |
468 | return MNL_CB_OK; | |
469 | } | |
470 | ||
471 | int rd_attr_cb(const struct nlattr *attr, void *data) | |
472 | { | |
473 | const struct nlattr **tb = data; | |
474 | int type; | |
475 | ||
476 | if (mnl_attr_type_valid(attr, RDMA_NLDEV_ATTR_MAX - 1) < 0) | |
477 | /* We received unknown attribute */ | |
478 | return MNL_CB_OK; | |
479 | ||
480 | type = mnl_attr_get_type(attr); | |
481 | ||
482 | if (mnl_attr_validate(attr, nldev_policy[type]) < 0) | |
483 | return MNL_CB_ERROR; | |
484 | ||
485 | tb[type] = attr; | |
486 | return MNL_CB_OK; | |
487 | } | |
488 | ||
489 | int rd_dev_init_cb(const struct nlmsghdr *nlh, void *data) | |
490 | { | |
491 | struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {}; | |
492 | struct dev_map *dev_map; | |
493 | struct rd *rd = data; | |
494 | const char *dev_name; | |
495 | ||
496 | mnl_attr_parse(nlh, 0, rd_attr_cb, tb); | |
497 | if (!tb[RDMA_NLDEV_ATTR_DEV_NAME] || !tb[RDMA_NLDEV_ATTR_DEV_INDEX]) | |
498 | return MNL_CB_ERROR; | |
499 | if (!tb[RDMA_NLDEV_ATTR_PORT_INDEX]) { | |
500 | pr_err("This tool doesn't support switches yet\n"); | |
501 | return MNL_CB_ERROR; | |
502 | } | |
503 | ||
504 | dev_name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]); | |
505 | ||
506 | dev_map = dev_map_alloc(dev_name); | |
507 | if (!dev_map) | |
508 | /* The main function will cleanup the allocations */ | |
509 | return MNL_CB_ERROR; | |
510 | list_add_tail(&dev_map->list, &rd->dev_map_list); | |
511 | ||
512 | dev_map->num_ports = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); | |
513 | dev_map->idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); | |
514 | return MNL_CB_OK; | |
515 | } | |
516 | ||
517 | void rd_free(struct rd *rd) | |
518 | { | |
519 | if (!rd) | |
520 | return; | |
521 | free(rd->buff); | |
522 | dev_map_cleanup(rd); | |
523 | filters_cleanup(rd); | |
524 | } | |
525 | ||
526 | int rd_set_arg_to_devname(struct rd *rd) | |
527 | { | |
528 | int ret = 0; | |
529 | ||
530 | while (!rd_no_arg(rd)) { | |
531 | if (rd_argv_match(rd, "dev") || rd_argv_match(rd, "link")) { | |
532 | rd_arg_inc(rd); | |
533 | if (rd_no_arg(rd)) { | |
534 | pr_err("No device name was supplied\n"); | |
535 | ret = -EINVAL; | |
536 | } | |
537 | goto out; | |
538 | } | |
539 | rd_arg_inc(rd); | |
540 | } | |
541 | out: | |
542 | return ret; | |
543 | } | |
544 | ||
545 | int rd_exec_link(struct rd *rd, int (*cb)(struct rd *rd), bool strict_port) | |
546 | { | |
547 | struct dev_map *dev_map; | |
548 | uint32_t port; | |
549 | int ret = 0; | |
550 | ||
551 | if (rd->json_output) | |
552 | jsonw_start_array(rd->jw); | |
553 | if (rd_no_arg(rd)) { | |
554 | list_for_each_entry(dev_map, &rd->dev_map_list, list) { | |
555 | rd->dev_idx = dev_map->idx; | |
556 | port = (strict_port) ? 1 : 0; | |
557 | for (; port < dev_map->num_ports + 1; port++) { | |
558 | rd->port_idx = port; | |
559 | ret = cb(rd); | |
560 | if (ret) | |
561 | goto out; | |
562 | } | |
563 | } | |
564 | ||
565 | } else { | |
566 | bool is_dump_all; | |
567 | ||
568 | dev_map = dev_map_lookup(rd, true); | |
569 | ret = get_port_from_argv(rd, &port, &is_dump_all, strict_port); | |
570 | if (!dev_map || port > dev_map->num_ports || (!port && ret)) { | |
571 | pr_err("Wrong device name\n"); | |
572 | ret = -ENOENT; | |
573 | goto out; | |
574 | } | |
575 | rd_arg_inc(rd); | |
576 | rd->dev_idx = dev_map->idx; | |
577 | rd->port_idx = port; | |
578 | for (; rd->port_idx < dev_map->num_ports + 1; rd->port_idx++) { | |
579 | ret = cb(rd); | |
580 | if (ret) | |
581 | goto out; | |
582 | if (!is_dump_all) | |
583 | /* | |
584 | * We got request to show link for devname | |
585 | * with port index. | |
586 | */ | |
587 | break; | |
588 | } | |
589 | } | |
590 | ||
591 | out: | |
592 | if (rd->json_output) | |
593 | jsonw_end_array(rd->jw); | |
594 | return ret; | |
595 | } | |
596 | ||
597 | int rd_exec_dev(struct rd *rd, int (*cb)(struct rd *rd)) | |
598 | { | |
599 | struct dev_map *dev_map; | |
600 | int ret = 0; | |
601 | ||
602 | if (rd->json_output) | |
603 | jsonw_start_array(rd->jw); | |
604 | if (rd_no_arg(rd)) { | |
605 | list_for_each_entry(dev_map, &rd->dev_map_list, list) { | |
606 | rd->dev_idx = dev_map->idx; | |
607 | ret = cb(rd); | |
608 | if (ret) | |
609 | goto out; | |
610 | } | |
611 | } else { | |
612 | dev_map = dev_map_lookup(rd, false); | |
613 | if (!dev_map) { | |
614 | pr_err("Wrong device name - %s\n", rd_argv(rd)); | |
615 | ret = -ENOENT; | |
616 | goto out; | |
617 | } | |
618 | rd_arg_inc(rd); | |
619 | rd->dev_idx = dev_map->idx; | |
620 | ret = cb(rd); | |
621 | } | |
622 | out: | |
623 | if (rd->json_output) | |
624 | jsonw_end_array(rd->jw); | |
625 | return ret; | |
626 | } | |
627 | ||
628 | int rd_exec_require_dev(struct rd *rd, int (*cb)(struct rd *rd)) | |
629 | { | |
630 | if (rd_no_arg(rd)) { | |
631 | pr_err("Please provide device name.\n"); | |
632 | return -EINVAL; | |
633 | } | |
634 | ||
635 | return rd_exec_dev(rd, cb); | |
636 | } | |
637 | ||
638 | int rd_exec_cmd(struct rd *rd, const struct rd_cmd *cmds, const char *str) | |
639 | { | |
640 | const struct rd_cmd *c; | |
641 | ||
642 | /* First argument in objs table is default variant */ | |
643 | if (rd_no_arg(rd)) | |
644 | return cmds->func(rd); | |
645 | ||
646 | for (c = cmds + 1; c->cmd; ++c) { | |
647 | if (rd_argv_match(rd, c->cmd)) { | |
648 | /* Move to next argument */ | |
649 | rd_arg_inc(rd); | |
650 | return c->func(rd); | |
651 | } | |
652 | } | |
653 | ||
654 | pr_err("Unknown %s '%s'.\n", str, rd_argv(rd)); | |
655 | return 0; | |
656 | } | |
657 | ||
658 | void rd_prepare_msg(struct rd *rd, uint32_t cmd, uint32_t *seq, uint16_t flags) | |
659 | { | |
660 | *seq = time(NULL); | |
661 | ||
662 | rd->nlh = mnl_nlmsg_put_header(rd->buff); | |
663 | rd->nlh->nlmsg_type = RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, cmd); | |
664 | rd->nlh->nlmsg_seq = *seq; | |
665 | rd->nlh->nlmsg_flags = flags; | |
666 | } | |
667 | ||
668 | int rd_send_msg(struct rd *rd) | |
669 | { | |
670 | int ret; | |
671 | ||
672 | rd->nl = mnl_socket_open(NETLINK_RDMA); | |
673 | if (!rd->nl) { | |
674 | pr_err("Failed to open NETLINK_RDMA socket\n"); | |
675 | return -ENODEV; | |
676 | } | |
677 | ||
678 | ret = mnl_socket_bind(rd->nl, 0, MNL_SOCKET_AUTOPID); | |
679 | if (ret < 0) { | |
680 | pr_err("Failed to bind socket with err %d\n", ret); | |
681 | goto err; | |
682 | } | |
683 | ||
684 | ret = mnl_socket_sendto(rd->nl, rd->nlh, rd->nlh->nlmsg_len); | |
685 | if (ret < 0) { | |
686 | pr_err("Failed to send to socket with err %d\n", ret); | |
687 | goto err; | |
688 | } | |
689 | return 0; | |
690 | ||
691 | err: | |
692 | mnl_socket_close(rd->nl); | |
693 | return ret; | |
694 | } | |
695 | ||
696 | int rd_recv_msg(struct rd *rd, mnl_cb_t callback, void *data, unsigned int seq) | |
697 | { | |
698 | int ret; | |
699 | unsigned int portid; | |
700 | char buf[MNL_SOCKET_BUFFER_SIZE]; | |
701 | ||
702 | portid = mnl_socket_get_portid(rd->nl); | |
703 | do { | |
704 | ret = mnl_socket_recvfrom(rd->nl, buf, sizeof(buf)); | |
705 | if (ret <= 0) | |
706 | break; | |
707 | ||
708 | ret = mnl_cb_run(buf, ret, seq, portid, callback, data); | |
709 | } while (ret > 0); | |
710 | ||
711 | if (ret < 0 && !rd->suppress_errors) | |
712 | perror("error"); | |
713 | ||
714 | mnl_socket_close(rd->nl); | |
715 | return ret; | |
716 | } | |
717 | ||
718 | static int null_cb(const struct nlmsghdr *nlh, void *data) | |
719 | { | |
720 | return MNL_CB_OK; | |
721 | } | |
722 | ||
723 | int rd_sendrecv_msg(struct rd *rd, unsigned int seq) | |
724 | { | |
725 | int ret; | |
726 | ||
727 | ret = rd_send_msg(rd); | |
728 | if (!ret) | |
729 | ret = rd_recv_msg(rd, null_cb, rd, seq); | |
730 | return ret; | |
731 | } | |
732 | ||
733 | static struct dev_map *_dev_map_lookup(struct rd *rd, const char *dev_name) | |
734 | { | |
735 | struct dev_map *dev_map; | |
736 | ||
737 | list_for_each_entry(dev_map, &rd->dev_map_list, list) | |
738 | if (strcmp(dev_name, dev_map->dev_name) == 0) | |
739 | return dev_map; | |
740 | ||
741 | return NULL; | |
742 | } | |
743 | ||
744 | struct dev_map *dev_map_lookup(struct rd *rd, bool allow_port_index) | |
745 | { | |
746 | struct dev_map *dev_map; | |
747 | char *dev_name; | |
748 | char *slash; | |
749 | ||
750 | if (rd_no_arg(rd)) | |
751 | return NULL; | |
752 | ||
753 | dev_name = strdup(rd_argv(rd)); | |
754 | if (allow_port_index) { | |
755 | slash = strrchr(dev_name, '/'); | |
756 | if (slash) | |
757 | *slash = '\0'; | |
758 | } | |
759 | ||
760 | dev_map = _dev_map_lookup(rd, dev_name); | |
761 | free(dev_name); | |
762 | return dev_map; | |
763 | } | |
764 | ||
765 | #define nla_type(attr) ((attr)->nla_type & NLA_TYPE_MASK) | |
766 | ||
767 | void newline(struct rd *rd) | |
768 | { | |
769 | if (rd->json_output) | |
770 | jsonw_end_array(rd->jw); | |
771 | else | |
772 | pr_out("\n"); | |
773 | } | |
774 | ||
775 | void newline_indent(struct rd *rd) | |
776 | { | |
777 | newline(rd); | |
778 | if (!rd->json_output) | |
779 | pr_out(" "); | |
780 | } | |
781 | ||
782 | static int print_driver_string(struct rd *rd, const char *key_str, | |
783 | const char *val_str) | |
784 | { | |
785 | if (rd->json_output) { | |
786 | jsonw_string_field(rd->jw, key_str, val_str); | |
787 | return 0; | |
788 | } else { | |
789 | return pr_out("%s %s ", key_str, val_str); | |
790 | } | |
791 | } | |
792 | ||
793 | void print_on_off(struct rd *rd, const char *key_str, bool on) | |
794 | { | |
795 | print_driver_string(rd, key_str, (on) ? "on":"off"); | |
796 | } | |
797 | ||
798 | static int print_driver_s32(struct rd *rd, const char *key_str, int32_t val, | |
799 | enum rdma_nldev_print_type print_type) | |
800 | { | |
801 | if (rd->json_output) { | |
802 | jsonw_int_field(rd->jw, key_str, val); | |
803 | return 0; | |
804 | } | |
805 | switch (print_type) { | |
806 | case RDMA_NLDEV_PRINT_TYPE_UNSPEC: | |
807 | return pr_out("%s %d ", key_str, val); | |
808 | case RDMA_NLDEV_PRINT_TYPE_HEX: | |
809 | return pr_out("%s 0x%x ", key_str, val); | |
810 | default: | |
811 | return -EINVAL; | |
812 | } | |
813 | } | |
814 | ||
815 | static int print_driver_u32(struct rd *rd, const char *key_str, uint32_t val, | |
816 | enum rdma_nldev_print_type print_type) | |
817 | { | |
818 | if (rd->json_output) { | |
819 | jsonw_int_field(rd->jw, key_str, val); | |
820 | return 0; | |
821 | } | |
822 | switch (print_type) { | |
823 | case RDMA_NLDEV_PRINT_TYPE_UNSPEC: | |
824 | return pr_out("%s %u ", key_str, val); | |
825 | case RDMA_NLDEV_PRINT_TYPE_HEX: | |
826 | return pr_out("%s 0x%x ", key_str, val); | |
827 | default: | |
828 | return -EINVAL; | |
829 | } | |
830 | } | |
831 | ||
832 | static int print_driver_s64(struct rd *rd, const char *key_str, int64_t val, | |
833 | enum rdma_nldev_print_type print_type) | |
834 | { | |
835 | if (rd->json_output) { | |
836 | jsonw_int_field(rd->jw, key_str, val); | |
837 | return 0; | |
838 | } | |
839 | switch (print_type) { | |
840 | case RDMA_NLDEV_PRINT_TYPE_UNSPEC: | |
841 | return pr_out("%s %" PRId64 " ", key_str, val); | |
842 | case RDMA_NLDEV_PRINT_TYPE_HEX: | |
843 | return pr_out("%s 0x%" PRIx64 " ", key_str, val); | |
844 | default: | |
845 | return -EINVAL; | |
846 | } | |
847 | } | |
848 | ||
849 | static int print_driver_u64(struct rd *rd, const char *key_str, uint64_t val, | |
850 | enum rdma_nldev_print_type print_type) | |
851 | { | |
852 | if (rd->json_output) { | |
853 | jsonw_int_field(rd->jw, key_str, val); | |
854 | return 0; | |
855 | } | |
856 | switch (print_type) { | |
857 | case RDMA_NLDEV_PRINT_TYPE_UNSPEC: | |
858 | return pr_out("%s %" PRIu64 " ", key_str, val); | |
859 | case RDMA_NLDEV_PRINT_TYPE_HEX: | |
860 | return pr_out("%s 0x%" PRIx64 " ", key_str, val); | |
861 | default: | |
862 | return -EINVAL; | |
863 | } | |
864 | } | |
865 | ||
866 | static int print_driver_entry(struct rd *rd, struct nlattr *key_attr, | |
867 | struct nlattr *val_attr, | |
868 | enum rdma_nldev_print_type print_type) | |
869 | { | |
870 | int attr_type = nla_type(val_attr); | |
871 | int ret = -EINVAL; | |
872 | char *key_str; | |
873 | ||
874 | if (asprintf(&key_str, "drv_%s", mnl_attr_get_str(key_attr)) == -1) | |
875 | return -ENOMEM; | |
876 | ||
877 | switch (attr_type) { | |
878 | case RDMA_NLDEV_ATTR_DRIVER_STRING: | |
879 | ret = print_driver_string(rd, key_str, | |
880 | mnl_attr_get_str(val_attr)); | |
881 | break; | |
882 | case RDMA_NLDEV_ATTR_DRIVER_S32: | |
883 | ret = print_driver_s32(rd, key_str, mnl_attr_get_u32(val_attr), | |
884 | print_type); | |
885 | break; | |
886 | case RDMA_NLDEV_ATTR_DRIVER_U32: | |
887 | ret = print_driver_u32(rd, key_str, mnl_attr_get_u32(val_attr), | |
888 | print_type); | |
889 | break; | |
890 | case RDMA_NLDEV_ATTR_DRIVER_S64: | |
891 | ret = print_driver_s64(rd, key_str, mnl_attr_get_u64(val_attr), | |
892 | print_type); | |
893 | break; | |
894 | case RDMA_NLDEV_ATTR_DRIVER_U64: | |
895 | ret = print_driver_u64(rd, key_str, mnl_attr_get_u64(val_attr), | |
896 | print_type); | |
897 | break; | |
898 | } | |
899 | free(key_str); | |
900 | return ret; | |
901 | } | |
902 | ||
903 | void print_driver_table(struct rd *rd, struct nlattr *tb) | |
904 | { | |
905 | int print_type = RDMA_NLDEV_PRINT_TYPE_UNSPEC; | |
906 | struct nlattr *tb_entry, *key = NULL, *val; | |
907 | int type, cc = 0; | |
908 | int ret; | |
909 | ||
910 | if (!rd->show_driver_details || !tb) | |
911 | return; | |
912 | ||
913 | if (rd->pretty_output) | |
914 | newline_indent(rd); | |
915 | ||
916 | /* | |
917 | * Driver attrs are tuples of {key, [print-type], value}. | |
918 | * The key must be a string. If print-type is present, it | |
919 | * defines an alternate printf format type vs the native format | |
920 | * for the attribute. And the value can be any available | |
921 | * driver type. | |
922 | */ | |
923 | mnl_attr_for_each_nested(tb_entry, tb) { | |
924 | ||
925 | if (cc > MAX_LINE_LENGTH) { | |
926 | if (rd->pretty_output) | |
927 | newline_indent(rd); | |
928 | cc = 0; | |
929 | } | |
930 | if (rd_attr_check(tb_entry, &type) != MNL_CB_OK) | |
931 | return; | |
932 | if (!key) { | |
933 | if (type != MNL_TYPE_NUL_STRING) | |
934 | return; | |
935 | key = tb_entry; | |
936 | } else if (type == MNL_TYPE_U8) { | |
937 | print_type = mnl_attr_get_u8(tb_entry); | |
938 | } else { | |
939 | val = tb_entry; | |
940 | ret = print_driver_entry(rd, key, val, print_type); | |
941 | if (ret < 0) | |
942 | return; | |
943 | cc += ret; | |
944 | print_type = RDMA_NLDEV_PRINT_TYPE_UNSPEC; | |
945 | key = NULL; | |
946 | } | |
947 | } | |
948 | return; | |
949 | } |