projects/linux·blob v6.6 · refs

1375 lines · 36.1 KiB

1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright (c) 2016 Mellanox Technologies. All rights reserved.
4 * Copyright (c) 2016 Jiri Pirko <[email protected]>
5 */
6
7#include <net/genetlink.h>
8#include <net/sock.h>
9#include "devl_internal.h"
10
11struct devlink_info_req {
12 struct sk_buff *msg;
13 void (*version_cb)(const char *version_name,
14 enum devlink_info_version_type version_type,
15 void *version_cb_priv);
16 void *version_cb_priv;
17};
18
19struct devlink_reload_combination {
20 enum devlink_reload_action action;
21 enum devlink_reload_limit limit;
22};
23
24static const struct devlink_reload_combination devlink_reload_invalid_combinations[] = {
25 {
26 /* can't reinitialize driver with no down time */
27 .action = DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
28 .limit = DEVLINK_RELOAD_LIMIT_NO_RESET,
29 },
30};
31
32static bool
33devlink_reload_combination_is_invalid(enum devlink_reload_action action,
34 enum devlink_reload_limit limit)
35{
36 int i;
37
38 for (i = 0; i < ARRAY_SIZE(devlink_reload_invalid_combinations); i++)
39 if (devlink_reload_invalid_combinations[i].action == action &&
40 devlink_reload_invalid_combinations[i].limit == limit)
41 return true;
42 return false;
43}
44
45static bool
46devlink_reload_action_is_supported(struct devlink *devlink, enum devlink_reload_action action)
47{
48 return test_bit(action, &devlink->ops->reload_actions);
49}
50
51static bool
52devlink_reload_limit_is_supported(struct devlink *devlink, enum devlink_reload_limit limit)
53{
54 return test_bit(limit, &devlink->ops->reload_limits);
55}
56
57static int devlink_reload_stat_put(struct sk_buff *msg,
58 enum devlink_reload_limit limit, u32 value)
59{
60 struct nlattr *reload_stats_entry;
61
62 reload_stats_entry = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_STATS_ENTRY);
63 if (!reload_stats_entry)
64 return -EMSGSIZE;
65
66 if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_STATS_LIMIT, limit) ||
67 nla_put_u32(msg, DEVLINK_ATTR_RELOAD_STATS_VALUE, value))
68 goto nla_put_failure;
69 nla_nest_end(msg, reload_stats_entry);
70 return 0;
71
72nla_put_failure:
73 nla_nest_cancel(msg, reload_stats_entry);
74 return -EMSGSIZE;
75}
76
77static int
78devlink_reload_stats_put(struct sk_buff *msg, struct devlink *devlink, bool is_remote)
79{
80 struct nlattr *reload_stats_attr, *act_info, *act_stats;
81 int i, j, stat_idx;
82 u32 value;
83
84 if (!is_remote)
85 reload_stats_attr = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_STATS);
86 else
87 reload_stats_attr = nla_nest_start(msg, DEVLINK_ATTR_REMOTE_RELOAD_STATS);
88
89 if (!reload_stats_attr)
90 return -EMSGSIZE;
91
92 for (i = 0; i <= DEVLINK_RELOAD_ACTION_MAX; i++) {
93 if ((!is_remote &&
94 !devlink_reload_action_is_supported(devlink, i)) ||
95 i == DEVLINK_RELOAD_ACTION_UNSPEC)
96 continue;
97 act_info = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_ACTION_INFO);
98 if (!act_info)
99 goto nla_put_failure;
100
101 if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_ACTION, i))
102 goto action_info_nest_cancel;
103 act_stats = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_ACTION_STATS);
104 if (!act_stats)
105 goto action_info_nest_cancel;
106
107 for (j = 0; j <= DEVLINK_RELOAD_LIMIT_MAX; j++) {
108 /* Remote stats are shown even if not locally supported.
109 * Stats of actions with unspecified limit are shown
110 * though drivers don't need to register unspecified
111 * limit.
112 */
113 if ((!is_remote && j != DEVLINK_RELOAD_LIMIT_UNSPEC &&
114 !devlink_reload_limit_is_supported(devlink, j)) ||
115 devlink_reload_combination_is_invalid(i, j))
116 continue;
117
118 stat_idx = j * __DEVLINK_RELOAD_ACTION_MAX + i;
119 if (!is_remote)
120 value = devlink->stats.reload_stats[stat_idx];
121 else
122 value = devlink->stats.remote_reload_stats[stat_idx];
123 if (devlink_reload_stat_put(msg, j, value))
124 goto action_stats_nest_cancel;
125 }
126 nla_nest_end(msg, act_stats);
127 nla_nest_end(msg, act_info);
128 }
129 nla_nest_end(msg, reload_stats_attr);
130 return 0;
131
132action_stats_nest_cancel:
133 nla_nest_cancel(msg, act_stats);
134action_info_nest_cancel:
135 nla_nest_cancel(msg, act_info);
136nla_put_failure:
137 nla_nest_cancel(msg, reload_stats_attr);
138 return -EMSGSIZE;
139}
140
141static int devlink_nl_fill(struct sk_buff *msg, struct devlink *devlink,
142 enum devlink_command cmd, u32 portid,
143 u32 seq, int flags)
144{
145 struct nlattr *dev_stats;
146 void *hdr;
147
148 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
149 if (!hdr)
150 return -EMSGSIZE;
151
152 if (devlink_nl_put_handle(msg, devlink))
153 goto nla_put_failure;
154 if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_FAILED, devlink->reload_failed))
155 goto nla_put_failure;
156
157 dev_stats = nla_nest_start(msg, DEVLINK_ATTR_DEV_STATS);
158 if (!dev_stats)
159 goto nla_put_failure;
160
161 if (devlink_reload_stats_put(msg, devlink, false))
162 goto dev_stats_nest_cancel;
163 if (devlink_reload_stats_put(msg, devlink, true))
164 goto dev_stats_nest_cancel;
165
166 nla_nest_end(msg, dev_stats);
167 genlmsg_end(msg, hdr);
168 return 0;
169
170dev_stats_nest_cancel:
171 nla_nest_cancel(msg, dev_stats);
172nla_put_failure:
173 genlmsg_cancel(msg, hdr);
174 return -EMSGSIZE;
175}
176
177static void devlink_notify(struct devlink *devlink, enum devlink_command cmd)
178{
179 struct sk_buff *msg;
180 int err;
181
182 WARN_ON(cmd != DEVLINK_CMD_NEW && cmd != DEVLINK_CMD_DEL);
183 WARN_ON(!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED));
184
185 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
186 if (!msg)
187 return;
188
189 err = devlink_nl_fill(msg, devlink, cmd, 0, 0, 0);
190 if (err) {
191 nlmsg_free(msg);
192 return;
193 }
194
195 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
196 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
197}
198
199int devlink_nl_get_doit(struct sk_buff *skb, struct genl_info *info)
200{
201 struct devlink *devlink = info->user_ptr[0];
202 struct sk_buff *msg;
203 int err;
204
205 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
206 if (!msg)
207 return -ENOMEM;
208
209 err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
210 info->snd_portid, info->snd_seq, 0);
211 if (err) {
212 nlmsg_free(msg);
213 return err;
214 }
215
216 return genlmsg_reply(msg, info);
217}
218
219static int
220devlink_nl_get_dump_one(struct sk_buff *msg, struct devlink *devlink,
221 struct netlink_callback *cb, int flags)
222{
223 return devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
224 NETLINK_CB(cb->skb).portid,
225 cb->nlh->nlmsg_seq, flags);
226}
227
228int devlink_nl_get_dumpit(struct sk_buff *msg, struct netlink_callback *cb)
229{
230 return devlink_nl_dumpit(msg, cb, devlink_nl_get_dump_one);
231}
232
233void devlink_notify_register(struct devlink *devlink)
234{
235 devlink_notify(devlink, DEVLINK_CMD_NEW);
236 devlink_linecards_notify_register(devlink);
237 devlink_ports_notify_register(devlink);
238 devlink_trap_policers_notify_register(devlink);
239 devlink_trap_groups_notify_register(devlink);
240 devlink_traps_notify_register(devlink);
241 devlink_rates_notify_register(devlink);
242 devlink_regions_notify_register(devlink);
243 devlink_params_notify_register(devlink);
244}
245
246void devlink_notify_unregister(struct devlink *devlink)
247{
248 devlink_params_notify_unregister(devlink);
249 devlink_regions_notify_unregister(devlink);
250 devlink_rates_notify_unregister(devlink);
251 devlink_traps_notify_unregister(devlink);
252 devlink_trap_groups_notify_unregister(devlink);
253 devlink_trap_policers_notify_unregister(devlink);
254 devlink_ports_notify_unregister(devlink);
255 devlink_linecards_notify_unregister(devlink);
256 devlink_notify(devlink, DEVLINK_CMD_DEL);
257}
258
259static void devlink_reload_failed_set(struct devlink *devlink,
260 bool reload_failed)
261{
262 if (devlink->reload_failed == reload_failed)
263 return;
264 devlink->reload_failed = reload_failed;
265 devlink_notify(devlink, DEVLINK_CMD_NEW);
266}
267
268bool devlink_is_reload_failed(const struct devlink *devlink)
269{
270 return devlink->reload_failed;
271}
272EXPORT_SYMBOL_GPL(devlink_is_reload_failed);
273
274static void
275__devlink_reload_stats_update(struct devlink *devlink, u32 *reload_stats,
276 enum devlink_reload_limit limit, u32 actions_performed)
277{
278 unsigned long actions = actions_performed;
279 int stat_idx;
280 int action;
281
282 for_each_set_bit(action, &actions, __DEVLINK_RELOAD_ACTION_MAX) {
283 stat_idx = limit * __DEVLINK_RELOAD_ACTION_MAX + action;
284 reload_stats[stat_idx]++;
285 }
286 devlink_notify(devlink, DEVLINK_CMD_NEW);
287}
288
289static void
290devlink_reload_stats_update(struct devlink *devlink, enum devlink_reload_limit limit,
291 u32 actions_performed)
292{
293 __devlink_reload_stats_update(devlink, devlink->stats.reload_stats, limit,
294 actions_performed);
295}
296
297/**
298 * devlink_remote_reload_actions_performed - Update devlink on reload actions
299 * performed which are not a direct result of devlink reload call.
300 *
301 * This should be called by a driver after performing reload actions in case it was not
302 * a result of devlink reload call. For example fw_activate was performed as a result
303 * of devlink reload triggered fw_activate on another host.
304 * The motivation for this function is to keep data on reload actions performed on this
305 * function whether it was done due to direct devlink reload call or not.
306 *
307 * @devlink: devlink
308 * @limit: reload limit
309 * @actions_performed: bitmask of actions performed
310 */
311void devlink_remote_reload_actions_performed(struct devlink *devlink,
312 enum devlink_reload_limit limit,
313 u32 actions_performed)
314{
315 if (WARN_ON(!actions_performed ||
316 actions_performed & BIT(DEVLINK_RELOAD_ACTION_UNSPEC) ||
317 actions_performed >= BIT(__DEVLINK_RELOAD_ACTION_MAX) ||
318 limit > DEVLINK_RELOAD_LIMIT_MAX))
319 return;
320
321 __devlink_reload_stats_update(devlink, devlink->stats.remote_reload_stats, limit,
322 actions_performed);
323}
324EXPORT_SYMBOL_GPL(devlink_remote_reload_actions_performed);
325
326static struct net *devlink_netns_get(struct sk_buff *skb,
327 struct genl_info *info)
328{
329 struct nlattr *netns_pid_attr = info->attrs[DEVLINK_ATTR_NETNS_PID];
330 struct nlattr *netns_fd_attr = info->attrs[DEVLINK_ATTR_NETNS_FD];
331 struct nlattr *netns_id_attr = info->attrs[DEVLINK_ATTR_NETNS_ID];
332 struct net *net;
333
334 if (!!netns_pid_attr + !!netns_fd_attr + !!netns_id_attr > 1) {
335 NL_SET_ERR_MSG(info->extack, "multiple netns identifying attributes specified");
336 return ERR_PTR(-EINVAL);
337 }
338
339 if (netns_pid_attr) {
340 net = get_net_ns_by_pid(nla_get_u32(netns_pid_attr));
341 } else if (netns_fd_attr) {
342 net = get_net_ns_by_fd(nla_get_u32(netns_fd_attr));
343 } else if (netns_id_attr) {
344 net = get_net_ns_by_id(sock_net(skb->sk),
345 nla_get_u32(netns_id_attr));
346 if (!net)
347 net = ERR_PTR(-EINVAL);
348 } else {
349 WARN_ON(1);
350 net = ERR_PTR(-EINVAL);
351 }
352 if (IS_ERR(net)) {
353 NL_SET_ERR_MSG(info->extack, "Unknown network namespace");
354 return ERR_PTR(-EINVAL);
355 }
356 if (!netlink_ns_capable(skb, net->user_ns, CAP_NET_ADMIN)) {
357 put_net(net);
358 return ERR_PTR(-EPERM);
359 }
360 return net;
361}
362
363static void devlink_reload_netns_change(struct devlink *devlink,
364 struct net *curr_net,
365 struct net *dest_net)
366{
367 /* Userspace needs to be notified about devlink objects
368 * removed from original and entering new network namespace.
369 * The rest of the devlink objects are re-created during
370 * reload process so the notifications are generated separatelly.
371 */
372 devlink_notify_unregister(devlink);
373 write_pnet(&devlink->_net, dest_net);
374 devlink_notify_register(devlink);
375}
376
377int devlink_reload(struct devlink *devlink, struct net *dest_net,
378 enum devlink_reload_action action,
379 enum devlink_reload_limit limit,
380 u32 *actions_performed, struct netlink_ext_ack *extack)
381{
382 u32 remote_reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE];
383 struct net *curr_net;
384 int err;
385
386 memcpy(remote_reload_stats, devlink->stats.remote_reload_stats,
387 sizeof(remote_reload_stats));
388
389 err = devlink->ops->reload_down(devlink, !!dest_net, action, limit, extack);
390 if (err)
391 return err;
392
393 curr_net = devlink_net(devlink);
394 if (dest_net && !net_eq(dest_net, curr_net))
395 devlink_reload_netns_change(devlink, curr_net, dest_net);
396
397 if (action == DEVLINK_RELOAD_ACTION_DRIVER_REINIT)
398 devlink_params_driverinit_load_new(devlink);
399
400 err = devlink->ops->reload_up(devlink, action, limit, actions_performed, extack);
401 devlink_reload_failed_set(devlink, !!err);
402 if (err)
403 return err;
404
405 WARN_ON(!(*actions_performed & BIT(action)));
406 /* Catch driver on updating the remote action within devlink reload */
407 WARN_ON(memcmp(remote_reload_stats, devlink->stats.remote_reload_stats,
408 sizeof(remote_reload_stats)));
409 devlink_reload_stats_update(devlink, limit, *actions_performed);
410 return 0;
411}
412
413static int
414devlink_nl_reload_actions_performed_snd(struct devlink *devlink, u32 actions_performed,
415 enum devlink_command cmd, struct genl_info *info)
416{
417 struct sk_buff *msg;
418 void *hdr;
419
420 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
421 if (!msg)
422 return -ENOMEM;
423
424 hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq, &devlink_nl_family, 0, cmd);
425 if (!hdr)
426 goto free_msg;
427
428 if (devlink_nl_put_handle(msg, devlink))
429 goto nla_put_failure;
430
431 if (nla_put_bitfield32(msg, DEVLINK_ATTR_RELOAD_ACTIONS_PERFORMED, actions_performed,
432 actions_performed))
433 goto nla_put_failure;
434 genlmsg_end(msg, hdr);
435
436 return genlmsg_reply(msg, info);
437
438nla_put_failure:
439 genlmsg_cancel(msg, hdr);
440free_msg:
441 nlmsg_free(msg);
442 return -EMSGSIZE;
443}
444
445int devlink_nl_cmd_reload(struct sk_buff *skb, struct genl_info *info)
446{
447 struct devlink *devlink = info->user_ptr[0];
448 enum devlink_reload_action action;
449 enum devlink_reload_limit limit;
450 struct net *dest_net = NULL;
451 u32 actions_performed;
452 int err;
453
454 err = devlink_resources_validate(devlink, NULL, info);
455 if (err) {
456 NL_SET_ERR_MSG(info->extack, "resources size validation failed");
457 return err;
458 }
459
460 if (info->attrs[DEVLINK_ATTR_RELOAD_ACTION])
461 action = nla_get_u8(info->attrs[DEVLINK_ATTR_RELOAD_ACTION]);
462 else
463 action = DEVLINK_RELOAD_ACTION_DRIVER_REINIT;
464
465 if (!devlink_reload_action_is_supported(devlink, action)) {
466 NL_SET_ERR_MSG(info->extack, "Requested reload action is not supported by the driver");
467 return -EOPNOTSUPP;
468 }
469
470 limit = DEVLINK_RELOAD_LIMIT_UNSPEC;
471 if (info->attrs[DEVLINK_ATTR_RELOAD_LIMITS]) {
472 struct nla_bitfield32 limits;
473 u32 limits_selected;
474
475 limits = nla_get_bitfield32(info->attrs[DEVLINK_ATTR_RELOAD_LIMITS]);
476 limits_selected = limits.value & limits.selector;
477 if (!limits_selected) {
478 NL_SET_ERR_MSG(info->extack, "Invalid limit selected");
479 return -EINVAL;
480 }
481 for (limit = 0 ; limit <= DEVLINK_RELOAD_LIMIT_MAX ; limit++)
482 if (limits_selected & BIT(limit))
483 break;
484 /* UAPI enables multiselection, but currently it is not used */
485 if (limits_selected != BIT(limit)) {
486 NL_SET_ERR_MSG(info->extack, "Multiselection of limit is not supported");
487 return -EOPNOTSUPP;
488 }
489 if (!devlink_reload_limit_is_supported(devlink, limit)) {
490 NL_SET_ERR_MSG(info->extack, "Requested limit is not supported by the driver");
491 return -EOPNOTSUPP;
492 }
493 if (devlink_reload_combination_is_invalid(action, limit)) {
494 NL_SET_ERR_MSG(info->extack, "Requested limit is invalid for this action");
495 return -EINVAL;
496 }
497 }
498 if (info->attrs[DEVLINK_ATTR_NETNS_PID] ||
499 info->attrs[DEVLINK_ATTR_NETNS_FD] ||
500 info->attrs[DEVLINK_ATTR_NETNS_ID]) {
501 dest_net = devlink_netns_get(skb, info);
502 if (IS_ERR(dest_net))
503 return PTR_ERR(dest_net);
504 if (!net_eq(dest_net, devlink_net(devlink)) &&
505 action != DEVLINK_RELOAD_ACTION_DRIVER_REINIT) {
506 NL_SET_ERR_MSG_MOD(info->extack,
507 "Changing namespace is only supported for reinit action");
508 return -EOPNOTSUPP;
509 }
510 }
511
512 err = devlink_reload(devlink, dest_net, action, limit, &actions_performed, info->extack);
513
514 if (dest_net)
515 put_net(dest_net);
516
517 if (err)
518 return err;
519 /* For backward compatibility generate reply only if attributes used by user */
520 if (!info->attrs[DEVLINK_ATTR_RELOAD_ACTION] && !info->attrs[DEVLINK_ATTR_RELOAD_LIMITS])
521 return 0;
522
523 return devlink_nl_reload_actions_performed_snd(devlink, actions_performed,
524 DEVLINK_CMD_RELOAD, info);
525}
526
527bool devlink_reload_actions_valid(const struct devlink_ops *ops)
528{
529 const struct devlink_reload_combination *comb;
530 int i;
531
532 if (!devlink_reload_supported(ops)) {
533 if (WARN_ON(ops->reload_actions))
534 return false;
535 return true;
536 }
537
538 if (WARN_ON(!ops->reload_actions ||
539 ops->reload_actions & BIT(DEVLINK_RELOAD_ACTION_UNSPEC) ||
540 ops->reload_actions >= BIT(__DEVLINK_RELOAD_ACTION_MAX)))
541 return false;
542
543 if (WARN_ON(ops->reload_limits & BIT(DEVLINK_RELOAD_LIMIT_UNSPEC) ||
544 ops->reload_limits >= BIT(__DEVLINK_RELOAD_LIMIT_MAX)))
545 return false;
546
547 for (i = 0; i < ARRAY_SIZE(devlink_reload_invalid_combinations); i++) {
548 comb = &devlink_reload_invalid_combinations[i];
549 if (ops->reload_actions == BIT(comb->action) &&
550 ops->reload_limits == BIT(comb->limit))
551 return false;
552 }
553 return true;
554}
555
556static int devlink_nl_eswitch_fill(struct sk_buff *msg, struct devlink *devlink,
557 enum devlink_command cmd, u32 portid,
558 u32 seq, int flags)
559{
560 const struct devlink_ops *ops = devlink->ops;
561 enum devlink_eswitch_encap_mode encap_mode;
562 u8 inline_mode;
563 void *hdr;
564 int err = 0;
565 u16 mode;
566
567 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
568 if (!hdr)
569 return -EMSGSIZE;
570
571 err = devlink_nl_put_handle(msg, devlink);
572 if (err)
573 goto nla_put_failure;
574
575 if (ops->eswitch_mode_get) {
576 err = ops->eswitch_mode_get(devlink, &mode);
577 if (err)
578 goto nla_put_failure;
579 err = nla_put_u16(msg, DEVLINK_ATTR_ESWITCH_MODE, mode);
580 if (err)
581 goto nla_put_failure;
582 }
583
584 if (ops->eswitch_inline_mode_get) {
585 err = ops->eswitch_inline_mode_get(devlink, &inline_mode);
586 if (err)
587 goto nla_put_failure;
588 err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_INLINE_MODE,
589 inline_mode);
590 if (err)
591 goto nla_put_failure;
592 }
593
594 if (ops->eswitch_encap_mode_get) {
595 err = ops->eswitch_encap_mode_get(devlink, &encap_mode);
596 if (err)
597 goto nla_put_failure;
598 err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_ENCAP_MODE, encap_mode);
599 if (err)
600 goto nla_put_failure;
601 }
602
603 genlmsg_end(msg, hdr);
604 return 0;
605
606nla_put_failure:
607 genlmsg_cancel(msg, hdr);
608 return err;
609}
610
611int devlink_nl_cmd_eswitch_get_doit(struct sk_buff *skb, struct genl_info *info)
612{
613 struct devlink *devlink = info->user_ptr[0];
614 struct sk_buff *msg;
615 int err;
616
617 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
618 if (!msg)
619 return -ENOMEM;
620
621 err = devlink_nl_eswitch_fill(msg, devlink, DEVLINK_CMD_ESWITCH_GET,
622 info->snd_portid, info->snd_seq, 0);
623
624 if (err) {
625 nlmsg_free(msg);
626 return err;
627 }
628
629 return genlmsg_reply(msg, info);
630}
631
632int devlink_nl_cmd_eswitch_set_doit(struct sk_buff *skb, struct genl_info *info)
633{
634 struct devlink *devlink = info->user_ptr[0];
635 const struct devlink_ops *ops = devlink->ops;
636 enum devlink_eswitch_encap_mode encap_mode;
637 u8 inline_mode;
638 int err = 0;
639 u16 mode;
640
641 if (info->attrs[DEVLINK_ATTR_ESWITCH_MODE]) {
642 if (!ops->eswitch_mode_set)
643 return -EOPNOTSUPP;
644 mode = nla_get_u16(info->attrs[DEVLINK_ATTR_ESWITCH_MODE]);
645 err = devlink_rate_nodes_check(devlink, mode, info->extack);
646 if (err)
647 return err;
648 err = ops->eswitch_mode_set(devlink, mode, info->extack);
649 if (err)
650 return err;
651 }
652
653 if (info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]) {
654 if (!ops->eswitch_inline_mode_set)
655 return -EOPNOTSUPP;
656 inline_mode = nla_get_u8(info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]);
657 err = ops->eswitch_inline_mode_set(devlink, inline_mode,
658 info->extack);
659 if (err)
660 return err;
661 }
662
663 if (info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]) {
664 if (!ops->eswitch_encap_mode_set)
665 return -EOPNOTSUPP;
666 encap_mode = nla_get_u8(info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]);
667 err = ops->eswitch_encap_mode_set(devlink, encap_mode,
668 info->extack);
669 if (err)
670 return err;
671 }
672
673 return 0;
674}
675
676int devlink_info_serial_number_put(struct devlink_info_req *req, const char *sn)
677{
678 if (!req->msg)
679 return 0;
680 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_SERIAL_NUMBER, sn);
681}
682EXPORT_SYMBOL_GPL(devlink_info_serial_number_put);
683
684int devlink_info_board_serial_number_put(struct devlink_info_req *req,
685 const char *bsn)
686{
687 if (!req->msg)
688 return 0;
689 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_BOARD_SERIAL_NUMBER,
690 bsn);
691}
692EXPORT_SYMBOL_GPL(devlink_info_board_serial_number_put);
693
694static int devlink_info_version_put(struct devlink_info_req *req, int attr,
695 const char *version_name,
696 const char *version_value,
697 enum devlink_info_version_type version_type)
698{
699 struct nlattr *nest;
700 int err;
701
702 if (req->version_cb)
703 req->version_cb(version_name, version_type,
704 req->version_cb_priv);
705
706 if (!req->msg)
707 return 0;
708
709 nest = nla_nest_start_noflag(req->msg, attr);
710 if (!nest)
711 return -EMSGSIZE;
712
713 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_NAME,
714 version_name);
715 if (err)
716 goto nla_put_failure;
717
718 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_VALUE,
719 version_value);
720 if (err)
721 goto nla_put_failure;
722
723 nla_nest_end(req->msg, nest);
724
725 return 0;
726
727nla_put_failure:
728 nla_nest_cancel(req->msg, nest);
729 return err;
730}
731
732int devlink_info_version_fixed_put(struct devlink_info_req *req,
733 const char *version_name,
734 const char *version_value)
735{
736 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_FIXED,
737 version_name, version_value,
738 DEVLINK_INFO_VERSION_TYPE_NONE);
739}
740EXPORT_SYMBOL_GPL(devlink_info_version_fixed_put);
741
742int devlink_info_version_stored_put(struct devlink_info_req *req,
743 const char *version_name,
744 const char *version_value)
745{
746 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_STORED,
747 version_name, version_value,
748 DEVLINK_INFO_VERSION_TYPE_NONE);
749}
750EXPORT_SYMBOL_GPL(devlink_info_version_stored_put);
751
752int devlink_info_version_stored_put_ext(struct devlink_info_req *req,
753 const char *version_name,
754 const char *version_value,
755 enum devlink_info_version_type version_type)
756{
757 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_STORED,
758 version_name, version_value,
759 version_type);
760}
761EXPORT_SYMBOL_GPL(devlink_info_version_stored_put_ext);
762
763int devlink_info_version_running_put(struct devlink_info_req *req,
764 const char *version_name,
765 const char *version_value)
766{
767 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_RUNNING,
768 version_name, version_value,
769 DEVLINK_INFO_VERSION_TYPE_NONE);
770}
771EXPORT_SYMBOL_GPL(devlink_info_version_running_put);
772
773int devlink_info_version_running_put_ext(struct devlink_info_req *req,
774 const char *version_name,
775 const char *version_value,
776 enum devlink_info_version_type version_type)
777{
778 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_RUNNING,
779 version_name, version_value,
780 version_type);
781}
782EXPORT_SYMBOL_GPL(devlink_info_version_running_put_ext);
783
784static int devlink_nl_driver_info_get(struct device_driver *drv,
785 struct devlink_info_req *req)
786{
787 if (!drv)
788 return 0;
789
790 if (drv->name[0])
791 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_DRIVER_NAME,
792 drv->name);
793
794 return 0;
795}
796
797static int
798devlink_nl_info_fill(struct sk_buff *msg, struct devlink *devlink,
799 enum devlink_command cmd, u32 portid,
800 u32 seq, int flags, struct netlink_ext_ack *extack)
801{
802 struct device *dev = devlink_to_dev(devlink);
803 struct devlink_info_req req = {};
804 void *hdr;
805 int err;
806
807 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
808 if (!hdr)
809 return -EMSGSIZE;
810
811 err = -EMSGSIZE;
812 if (devlink_nl_put_handle(msg, devlink))
813 goto err_cancel_msg;
814
815 req.msg = msg;
816 if (devlink->ops->info_get) {
817 err = devlink->ops->info_get(devlink, &req, extack);
818 if (err)
819 goto err_cancel_msg;
820 }
821
822 err = devlink_nl_driver_info_get(dev->driver, &req);
823 if (err)
824 goto err_cancel_msg;
825
826 genlmsg_end(msg, hdr);
827 return 0;
828
829err_cancel_msg:
830 genlmsg_cancel(msg, hdr);
831 return err;
832}
833
834int devlink_nl_info_get_doit(struct sk_buff *skb, struct genl_info *info)
835{
836 struct devlink *devlink = info->user_ptr[0];
837 struct sk_buff *msg;
838 int err;
839
840 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
841 if (!msg)
842 return -ENOMEM;
843
844 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
845 info->snd_portid, info->snd_seq, 0,
846 info->extack);
847 if (err) {
848 nlmsg_free(msg);
849 return err;
850 }
851
852 return genlmsg_reply(msg, info);
853}
854
855static int
856devlink_nl_info_get_dump_one(struct sk_buff *msg, struct devlink *devlink,
857 struct netlink_callback *cb, int flags)
858{
859 int err;
860
861 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
862 NETLINK_CB(cb->skb).portid,
863 cb->nlh->nlmsg_seq, flags,
864 cb->extack);
865 if (err == -EOPNOTSUPP)
866 err = 0;
867 return err;
868}
869
870int devlink_nl_info_get_dumpit(struct sk_buff *msg, struct netlink_callback *cb)
871{
872 return devlink_nl_dumpit(msg, cb, devlink_nl_info_get_dump_one);
873}
874
875static int devlink_nl_flash_update_fill(struct sk_buff *msg,
876 struct devlink *devlink,
877 enum devlink_command cmd,
878 struct devlink_flash_notify *params)
879{
880 void *hdr;
881
882 hdr = genlmsg_put(msg, 0, 0, &devlink_nl_family, 0, cmd);
883 if (!hdr)
884 return -EMSGSIZE;
885
886 if (devlink_nl_put_handle(msg, devlink))
887 goto nla_put_failure;
888
889 if (cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS)
890 goto out;
891
892 if (params->status_msg &&
893 nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_MSG,
894 params->status_msg))
895 goto nla_put_failure;
896 if (params->component &&
897 nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_COMPONENT,
898 params->component))
899 goto nla_put_failure;
900 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_DONE,
901 params->done, DEVLINK_ATTR_PAD))
902 goto nla_put_failure;
903 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TOTAL,
904 params->total, DEVLINK_ATTR_PAD))
905 goto nla_put_failure;
906 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TIMEOUT,
907 params->timeout, DEVLINK_ATTR_PAD))
908 goto nla_put_failure;
909
910out:
911 genlmsg_end(msg, hdr);
912 return 0;
913
914nla_put_failure:
915 genlmsg_cancel(msg, hdr);
916 return -EMSGSIZE;
917}
918
919static void __devlink_flash_update_notify(struct devlink *devlink,
920 enum devlink_command cmd,
921 struct devlink_flash_notify *params)
922{
923 struct sk_buff *msg;
924 int err;
925
926 WARN_ON(cmd != DEVLINK_CMD_FLASH_UPDATE &&
927 cmd != DEVLINK_CMD_FLASH_UPDATE_END &&
928 cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS);
929
930 if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
931 return;
932
933 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
934 if (!msg)
935 return;
936
937 err = devlink_nl_flash_update_fill(msg, devlink, cmd, params);
938 if (err)
939 goto out_free_msg;
940
941 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
942 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
943 return;
944
945out_free_msg:
946 nlmsg_free(msg);
947}
948
949static void devlink_flash_update_begin_notify(struct devlink *devlink)
950{
951 struct devlink_flash_notify params = {};
952
953 __devlink_flash_update_notify(devlink,
954 DEVLINK_CMD_FLASH_UPDATE,
955 &params);
956}
957
958static void devlink_flash_update_end_notify(struct devlink *devlink)
959{
960 struct devlink_flash_notify params = {};
961
962 __devlink_flash_update_notify(devlink,
963 DEVLINK_CMD_FLASH_UPDATE_END,
964 &params);
965}
966
967void devlink_flash_update_status_notify(struct devlink *devlink,
968 const char *status_msg,
969 const char *component,
970 unsigned long done,
971 unsigned long total)
972{
973 struct devlink_flash_notify params = {
974 .status_msg = status_msg,
975 .component = component,
976 .done = done,
977 .total = total,
978 };
979
980 __devlink_flash_update_notify(devlink,
981 DEVLINK_CMD_FLASH_UPDATE_STATUS,
982 &params);
983}
984EXPORT_SYMBOL_GPL(devlink_flash_update_status_notify);
985
986void devlink_flash_update_timeout_notify(struct devlink *devlink,
987 const char *status_msg,
988 const char *component,
989 unsigned long timeout)
990{
991 struct devlink_flash_notify params = {
992 .status_msg = status_msg,
993 .component = component,
994 .timeout = timeout,
995 };
996
997 __devlink_flash_update_notify(devlink,
998 DEVLINK_CMD_FLASH_UPDATE_STATUS,
999 &params);
1000}
1001EXPORT_SYMBOL_GPL(devlink_flash_update_timeout_notify);
1002
1003struct devlink_flash_component_lookup_ctx {
1004 const char *lookup_name;
1005 bool lookup_name_found;
1006};
1007
1008static void
1009devlink_flash_component_lookup_cb(const char *version_name,
1010 enum devlink_info_version_type version_type,
1011 void *version_cb_priv)
1012{
1013 struct devlink_flash_component_lookup_ctx *lookup_ctx = version_cb_priv;
1014
1015 if (version_type != DEVLINK_INFO_VERSION_TYPE_COMPONENT ||
1016 lookup_ctx->lookup_name_found)
1017 return;
1018
1019 lookup_ctx->lookup_name_found =
1020 !strcmp(lookup_ctx->lookup_name, version_name);
1021}
1022
1023static int devlink_flash_component_get(struct devlink *devlink,
1024 struct nlattr *nla_component,
1025 const char **p_component,
1026 struct netlink_ext_ack *extack)
1027{
1028 struct devlink_flash_component_lookup_ctx lookup_ctx = {};
1029 struct devlink_info_req req = {};
1030 const char *component;
1031 int ret;
1032
1033 if (!nla_component)
1034 return 0;
1035
1036 component = nla_data(nla_component);
1037
1038 if (!devlink->ops->info_get) {
1039 NL_SET_ERR_MSG_ATTR(extack, nla_component,
1040 "component update is not supported by this device");
1041 return -EOPNOTSUPP;
1042 }
1043
1044 lookup_ctx.lookup_name = component;
1045 req.version_cb = devlink_flash_component_lookup_cb;
1046 req.version_cb_priv = &lookup_ctx;
1047
1048 ret = devlink->ops->info_get(devlink, &req, NULL);
1049 if (ret)
1050 return ret;
1051
1052 if (!lookup_ctx.lookup_name_found) {
1053 NL_SET_ERR_MSG_ATTR(extack, nla_component,
1054 "selected component is not supported by this device");
1055 return -EINVAL;
1056 }
1057 *p_component = component;
1058 return 0;
1059}
1060
1061int devlink_nl_cmd_flash_update(struct sk_buff *skb, struct genl_info *info)
1062{
1063 struct nlattr *nla_overwrite_mask, *nla_file_name;
1064 struct devlink_flash_update_params params = {};
1065 struct devlink *devlink = info->user_ptr[0];
1066 const char *file_name;
1067 u32 supported_params;
1068 int ret;
1069
1070 if (!devlink->ops->flash_update)
1071 return -EOPNOTSUPP;
1072
1073 if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME))
1074 return -EINVAL;
1075
1076 ret = devlink_flash_component_get(devlink,
1077 info->attrs[DEVLINK_ATTR_FLASH_UPDATE_COMPONENT],
1078 &params.component, info->extack);
1079 if (ret)
1080 return ret;
1081
1082 supported_params = devlink->ops->supported_flash_update_params;
1083
1084 nla_overwrite_mask = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_OVERWRITE_MASK];
1085 if (nla_overwrite_mask) {
1086 struct nla_bitfield32 sections;
1087
1088 if (!(supported_params & DEVLINK_SUPPORT_FLASH_UPDATE_OVERWRITE_MASK)) {
1089 NL_SET_ERR_MSG_ATTR(info->extack, nla_overwrite_mask,
1090 "overwrite settings are not supported by this device");
1091 return -EOPNOTSUPP;
1092 }
1093 sections = nla_get_bitfield32(nla_overwrite_mask);
1094 params.overwrite_mask = sections.value & sections.selector;
1095 }
1096
1097 nla_file_name = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME];
1098 file_name = nla_data(nla_file_name);
1099 ret = request_firmware(&params.fw, file_name, devlink->dev);
1100 if (ret) {
1101 NL_SET_ERR_MSG_ATTR(info->extack, nla_file_name,
1102 "failed to locate the requested firmware file");
1103 return ret;
1104 }
1105
1106 devlink_flash_update_begin_notify(devlink);
1107 ret = devlink->ops->flash_update(devlink, &params, info->extack);
1108 devlink_flash_update_end_notify(devlink);
1109
1110 release_firmware(params.fw);
1111
1112 return ret;
1113}
1114
1115static void __devlink_compat_running_version(struct devlink *devlink,
1116 char *buf, size_t len)
1117{
1118 struct devlink_info_req req = {};
1119 const struct nlattr *nlattr;
1120 struct sk_buff *msg;
1121 int rem, err;
1122
1123 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1124 if (!msg)
1125 return;
1126
1127 req.msg = msg;
1128 err = devlink->ops->info_get(devlink, &req, NULL);
1129 if (err)
1130 goto free_msg;
1131
1132 nla_for_each_attr(nlattr, (void *)msg->data, msg->len, rem) {
1133 const struct nlattr *kv;
1134 int rem_kv;
1135
1136 if (nla_type(nlattr) != DEVLINK_ATTR_INFO_VERSION_RUNNING)
1137 continue;
1138
1139 nla_for_each_nested(kv, nlattr, rem_kv) {
1140 if (nla_type(kv) != DEVLINK_ATTR_INFO_VERSION_VALUE)
1141 continue;
1142
1143 strlcat(buf, nla_data(kv), len);
1144 strlcat(buf, " ", len);
1145 }
1146 }
1147free_msg:
1148 nlmsg_free(msg);
1149}
1150
1151void devlink_compat_running_version(struct devlink *devlink,
1152 char *buf, size_t len)
1153{
1154 if (!devlink->ops->info_get)
1155 return;
1156
1157 devl_lock(devlink);
1158 if (devl_is_registered(devlink))
1159 __devlink_compat_running_version(devlink, buf, len);
1160 devl_unlock(devlink);
1161}
1162
1163int devlink_compat_flash_update(struct devlink *devlink, const char *file_name)
1164{
1165 struct devlink_flash_update_params params = {};
1166 int ret;
1167
1168 devl_lock(devlink);
1169 if (!devl_is_registered(devlink)) {
1170 ret = -ENODEV;
1171 goto out_unlock;
1172 }
1173
1174 if (!devlink->ops->flash_update) {
1175 ret = -EOPNOTSUPP;
1176 goto out_unlock;
1177 }
1178
1179 ret = request_firmware(&params.fw, file_name, devlink->dev);
1180 if (ret)
1181 goto out_unlock;
1182
1183 devlink_flash_update_begin_notify(devlink);
1184 ret = devlink->ops->flash_update(devlink, &params, NULL);
1185 devlink_flash_update_end_notify(devlink);
1186
1187 release_firmware(params.fw);
1188out_unlock:
1189 devl_unlock(devlink);
1190
1191 return ret;
1192}
1193
1194static int
1195devlink_nl_selftests_fill(struct sk_buff *msg, struct devlink *devlink,
1196 u32 portid, u32 seq, int flags,
1197 struct netlink_ext_ack *extack)
1198{
1199 struct nlattr *selftests;
1200 void *hdr;
1201 int err;
1202 int i;
1203
1204 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags,
1205 DEVLINK_CMD_SELFTESTS_GET);
1206 if (!hdr)
1207 return -EMSGSIZE;
1208
1209 err = -EMSGSIZE;
1210 if (devlink_nl_put_handle(msg, devlink))
1211 goto err_cancel_msg;
1212
1213 selftests = nla_nest_start(msg, DEVLINK_ATTR_SELFTESTS);
1214 if (!selftests)
1215 goto err_cancel_msg;
1216
1217 for (i = DEVLINK_ATTR_SELFTEST_ID_UNSPEC + 1;
1218 i <= DEVLINK_ATTR_SELFTEST_ID_MAX; i++) {
1219 if (devlink->ops->selftest_check(devlink, i, extack)) {
1220 err = nla_put_flag(msg, i);
1221 if (err)
1222 goto err_cancel_msg;
1223 }
1224 }
1225
1226 nla_nest_end(msg, selftests);
1227 genlmsg_end(msg, hdr);
1228 return 0;
1229
1230err_cancel_msg:
1231 genlmsg_cancel(msg, hdr);
1232 return err;
1233}
1234
1235int devlink_nl_selftests_get_doit(struct sk_buff *skb, struct genl_info *info)
1236{
1237 struct devlink *devlink = info->user_ptr[0];
1238 struct sk_buff *msg;
1239 int err;
1240
1241 if (!devlink->ops->selftest_check)
1242 return -EOPNOTSUPP;
1243
1244 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1245 if (!msg)
1246 return -ENOMEM;
1247
1248 err = devlink_nl_selftests_fill(msg, devlink, info->snd_portid,
1249 info->snd_seq, 0, info->extack);
1250 if (err) {
1251 nlmsg_free(msg);
1252 return err;
1253 }
1254
1255 return genlmsg_reply(msg, info);
1256}
1257
1258static int devlink_nl_selftests_get_dump_one(struct sk_buff *msg,
1259 struct devlink *devlink,
1260 struct netlink_callback *cb,
1261 int flags)
1262{
1263 if (!devlink->ops->selftest_check)
1264 return 0;
1265
1266 return devlink_nl_selftests_fill(msg, devlink,
1267 NETLINK_CB(cb->skb).portid,
1268 cb->nlh->nlmsg_seq, flags,
1269 cb->extack);
1270}
1271
1272int devlink_nl_selftests_get_dumpit(struct sk_buff *skb,
1273 struct netlink_callback *cb)
1274{
1275 return devlink_nl_dumpit(skb, cb, devlink_nl_selftests_get_dump_one);
1276}
1277
1278static int devlink_selftest_result_put(struct sk_buff *skb, unsigned int id,
1279 enum devlink_selftest_status test_status)
1280{
1281 struct nlattr *result_attr;
1282
1283 result_attr = nla_nest_start(skb, DEVLINK_ATTR_SELFTEST_RESULT);
1284 if (!result_attr)
1285 return -EMSGSIZE;
1286
1287 if (nla_put_u32(skb, DEVLINK_ATTR_SELFTEST_RESULT_ID, id) ||
1288 nla_put_u8(skb, DEVLINK_ATTR_SELFTEST_RESULT_STATUS,
1289 test_status))
1290 goto nla_put_failure;
1291
1292 nla_nest_end(skb, result_attr);
1293 return 0;
1294
1295nla_put_failure:
1296 nla_nest_cancel(skb, result_attr);
1297 return -EMSGSIZE;
1298}
1299
1300static const struct nla_policy devlink_selftest_nl_policy[DEVLINK_ATTR_SELFTEST_ID_MAX + 1] = {
1301 [DEVLINK_ATTR_SELFTEST_ID_FLASH] = { .type = NLA_FLAG },
1302};
1303
1304int devlink_nl_cmd_selftests_run(struct sk_buff *skb, struct genl_info *info)
1305{
1306 struct nlattr *tb[DEVLINK_ATTR_SELFTEST_ID_MAX + 1];
1307 struct devlink *devlink = info->user_ptr[0];
1308 struct nlattr *attrs, *selftests;
1309 struct sk_buff *msg;
1310 void *hdr;
1311 int err;
1312 int i;
1313
1314 if (!devlink->ops->selftest_run || !devlink->ops->selftest_check)
1315 return -EOPNOTSUPP;
1316
1317 if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_SELFTESTS))
1318 return -EINVAL;
1319
1320 attrs = info->attrs[DEVLINK_ATTR_SELFTESTS];
1321
1322 err = nla_parse_nested(tb, DEVLINK_ATTR_SELFTEST_ID_MAX, attrs,
1323 devlink_selftest_nl_policy, info->extack);
1324 if (err < 0)
1325 return err;
1326
1327 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1328 if (!msg)
1329 return -ENOMEM;
1330
1331 err = -EMSGSIZE;
1332 hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq,
1333 &devlink_nl_family, 0, DEVLINK_CMD_SELFTESTS_RUN);
1334 if (!hdr)
1335 goto free_msg;
1336
1337 if (devlink_nl_put_handle(msg, devlink))
1338 goto genlmsg_cancel;
1339
1340 selftests = nla_nest_start(msg, DEVLINK_ATTR_SELFTESTS);
1341 if (!selftests)
1342 goto genlmsg_cancel;
1343
1344 for (i = DEVLINK_ATTR_SELFTEST_ID_UNSPEC + 1;
1345 i <= DEVLINK_ATTR_SELFTEST_ID_MAX; i++) {
1346 enum devlink_selftest_status test_status;
1347
1348 if (nla_get_flag(tb[i])) {
1349 if (!devlink->ops->selftest_check(devlink, i,
1350 info->extack)) {
1351 if (devlink_selftest_result_put(msg, i,
1352 DEVLINK_SELFTEST_STATUS_SKIP))
1353 goto selftests_nest_cancel;
1354 continue;
1355 }
1356
1357 test_status = devlink->ops->selftest_run(devlink, i,
1358 info->extack);
1359 if (devlink_selftest_result_put(msg, i, test_status))
1360 goto selftests_nest_cancel;
1361 }
1362 }
1363
1364 nla_nest_end(msg, selftests);
1365 genlmsg_end(msg, hdr);
1366 return genlmsg_reply(msg, info);
1367
1368selftests_nest_cancel:
1369 nla_nest_cancel(msg, selftests);
1370genlmsg_cancel:
1371 genlmsg_cancel(msg, hdr);
1372free_msg:
1373 nlmsg_free(msg);
1374 return err;
1375}