projects/linux·blob v7.0 · refs

1443 lines · 37.8 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 <linux/device.h>
8#include <net/genetlink.h>
9#include <net/sock.h>
10#include "devl_internal.h"
11
12struct devlink_info_req {
13 struct sk_buff *msg;
14 void (*version_cb)(const char *version_name,
15 enum devlink_info_version_type version_type,
16 void *version_cb_priv);
17 void *version_cb_priv;
18};
19
20struct devlink_reload_combination {
21 enum devlink_reload_action action;
22 enum devlink_reload_limit limit;
23};
24
25static const struct devlink_reload_combination devlink_reload_invalid_combinations[] = {
26 {
27 /* can't reinitialize driver with no down time */
28 .action = DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
29 .limit = DEVLINK_RELOAD_LIMIT_NO_RESET,
30 },
31};
32
33static bool
34devlink_reload_combination_is_invalid(enum devlink_reload_action action,
35 enum devlink_reload_limit limit)
36{
37 int i;
38
39 for (i = 0; i < ARRAY_SIZE(devlink_reload_invalid_combinations); i++)
40 if (devlink_reload_invalid_combinations[i].action == action &&
41 devlink_reload_invalid_combinations[i].limit == limit)
42 return true;
43 return false;
44}
45
46static bool
47devlink_reload_action_is_supported(struct devlink *devlink, enum devlink_reload_action action)
48{
49 return test_bit(action, &devlink->ops->reload_actions);
50}
51
52static bool
53devlink_reload_limit_is_supported(struct devlink *devlink, enum devlink_reload_limit limit)
54{
55 return test_bit(limit, &devlink->ops->reload_limits);
56}
57
58static int devlink_reload_stat_put(struct sk_buff *msg,
59 enum devlink_reload_limit limit, u32 value)
60{
61 struct nlattr *reload_stats_entry;
62
63 reload_stats_entry = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_STATS_ENTRY);
64 if (!reload_stats_entry)
65 return -EMSGSIZE;
66
67 if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_STATS_LIMIT, limit) ||
68 nla_put_u32(msg, DEVLINK_ATTR_RELOAD_STATS_VALUE, value))
69 goto nla_put_failure;
70 nla_nest_end(msg, reload_stats_entry);
71 return 0;
72
73nla_put_failure:
74 nla_nest_cancel(msg, reload_stats_entry);
75 return -EMSGSIZE;
76}
77
78static int
79devlink_reload_stats_put(struct sk_buff *msg, struct devlink *devlink, bool is_remote)
80{
81 struct nlattr *reload_stats_attr, *act_info, *act_stats;
82 int i, j, stat_idx;
83 u32 value;
84
85 if (!is_remote)
86 reload_stats_attr = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_STATS);
87 else
88 reload_stats_attr = nla_nest_start(msg, DEVLINK_ATTR_REMOTE_RELOAD_STATS);
89
90 if (!reload_stats_attr)
91 return -EMSGSIZE;
92
93 for (i = 0; i <= DEVLINK_RELOAD_ACTION_MAX; i++) {
94 if ((!is_remote &&
95 !devlink_reload_action_is_supported(devlink, i)) ||
96 i == DEVLINK_RELOAD_ACTION_UNSPEC)
97 continue;
98 act_info = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_ACTION_INFO);
99 if (!act_info)
100 goto nla_put_failure;
101
102 if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_ACTION, i))
103 goto action_info_nest_cancel;
104 act_stats = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_ACTION_STATS);
105 if (!act_stats)
106 goto action_info_nest_cancel;
107
108 for (j = 0; j <= DEVLINK_RELOAD_LIMIT_MAX; j++) {
109 /* Remote stats are shown even if not locally supported.
110 * Stats of actions with unspecified limit are shown
111 * though drivers don't need to register unspecified
112 * limit.
113 */
114 if ((!is_remote && j != DEVLINK_RELOAD_LIMIT_UNSPEC &&
115 !devlink_reload_limit_is_supported(devlink, j)) ||
116 devlink_reload_combination_is_invalid(i, j))
117 continue;
118
119 stat_idx = j * __DEVLINK_RELOAD_ACTION_MAX + i;
120 if (!is_remote)
121 value = devlink->stats.reload_stats[stat_idx];
122 else
123 value = devlink->stats.remote_reload_stats[stat_idx];
124 if (devlink_reload_stat_put(msg, j, value))
125 goto action_stats_nest_cancel;
126 }
127 nla_nest_end(msg, act_stats);
128 nla_nest_end(msg, act_info);
129 }
130 nla_nest_end(msg, reload_stats_attr);
131 return 0;
132
133action_stats_nest_cancel:
134 nla_nest_cancel(msg, act_stats);
135action_info_nest_cancel:
136 nla_nest_cancel(msg, act_info);
137nla_put_failure:
138 nla_nest_cancel(msg, reload_stats_attr);
139 return -EMSGSIZE;
140}
141
142static int devlink_nl_nested_fill(struct sk_buff *msg, struct devlink *devlink)
143{
144 unsigned long rel_index;
145 void *unused;
146 int err;
147
148 xa_for_each(&devlink->nested_rels, rel_index, unused) {
149 err = devlink_rel_devlink_handle_put(msg, devlink,
150 rel_index,
151 DEVLINK_ATTR_NESTED_DEVLINK,
152 NULL);
153 if (err)
154 return err;
155 }
156 return 0;
157}
158
159static int devlink_nl_fill(struct sk_buff *msg, struct devlink *devlink,
160 enum devlink_command cmd, u32 portid,
161 u32 seq, int flags)
162{
163 struct nlattr *dev_stats;
164 void *hdr;
165
166 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
167 if (!hdr)
168 return -EMSGSIZE;
169
170 if (devlink_nl_put_handle(msg, devlink))
171 goto nla_put_failure;
172 if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_FAILED, devlink->reload_failed))
173 goto nla_put_failure;
174
175 dev_stats = nla_nest_start(msg, DEVLINK_ATTR_DEV_STATS);
176 if (!dev_stats)
177 goto nla_put_failure;
178
179 if (devlink_reload_stats_put(msg, devlink, false))
180 goto dev_stats_nest_cancel;
181 if (devlink_reload_stats_put(msg, devlink, true))
182 goto dev_stats_nest_cancel;
183
184 nla_nest_end(msg, dev_stats);
185
186 if (devlink_nl_nested_fill(msg, devlink))
187 goto nla_put_failure;
188
189 genlmsg_end(msg, hdr);
190 return 0;
191
192dev_stats_nest_cancel:
193 nla_nest_cancel(msg, dev_stats);
194nla_put_failure:
195 genlmsg_cancel(msg, hdr);
196 return -EMSGSIZE;
197}
198
199static void devlink_notify(struct devlink *devlink, enum devlink_command cmd)
200{
201 struct sk_buff *msg;
202 int err;
203
204 WARN_ON(cmd != DEVLINK_CMD_NEW && cmd != DEVLINK_CMD_DEL);
205 WARN_ON(!devl_is_registered(devlink));
206
207 if (!devlink_nl_notify_need(devlink))
208 return;
209
210 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
211 if (!msg)
212 return;
213
214 err = devlink_nl_fill(msg, devlink, cmd, 0, 0, 0);
215 if (err) {
216 nlmsg_free(msg);
217 return;
218 }
219
220 devlink_nl_notify_send(devlink, msg);
221}
222
223int devlink_nl_get_doit(struct sk_buff *skb, struct genl_info *info)
224{
225 struct devlink *devlink = info->user_ptr[0];
226 struct sk_buff *msg;
227 int err;
228
229 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
230 if (!msg)
231 return -ENOMEM;
232
233 err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
234 info->snd_portid, info->snd_seq, 0);
235 if (err) {
236 nlmsg_free(msg);
237 return err;
238 }
239
240 return genlmsg_reply(msg, info);
241}
242
243static int
244devlink_nl_get_dump_one(struct sk_buff *msg, struct devlink *devlink,
245 struct netlink_callback *cb, int flags)
246{
247 return devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
248 NETLINK_CB(cb->skb).portid,
249 cb->nlh->nlmsg_seq, flags);
250}
251
252int devlink_nl_get_dumpit(struct sk_buff *msg, struct netlink_callback *cb)
253{
254 return devlink_nl_dumpit(msg, cb, devlink_nl_get_dump_one);
255}
256
257static void devlink_rel_notify_cb(struct devlink *devlink, u32 obj_index)
258{
259 devlink_notify(devlink, DEVLINK_CMD_NEW);
260}
261
262static void devlink_rel_cleanup_cb(struct devlink *devlink, u32 obj_index,
263 u32 rel_index)
264{
265 xa_erase(&devlink->nested_rels, rel_index);
266}
267
268int devl_nested_devlink_set(struct devlink *devlink,
269 struct devlink *nested_devlink)
270{
271 u32 rel_index;
272 int err;
273
274 err = devlink_rel_nested_in_add(&rel_index, devlink->index, 0,
275 devlink_rel_notify_cb,
276 devlink_rel_cleanup_cb,
277 nested_devlink);
278 if (err)
279 return err;
280 return xa_insert(&devlink->nested_rels, rel_index,
281 xa_mk_value(0), GFP_KERNEL);
282}
283EXPORT_SYMBOL_GPL(devl_nested_devlink_set);
284
285void devlink_notify_register(struct devlink *devlink)
286{
287 devlink_notify(devlink, DEVLINK_CMD_NEW);
288 devlink_linecards_notify_register(devlink);
289 devlink_ports_notify_register(devlink);
290 devlink_trap_policers_notify_register(devlink);
291 devlink_trap_groups_notify_register(devlink);
292 devlink_traps_notify_register(devlink);
293 devlink_rates_notify_register(devlink);
294 devlink_regions_notify_register(devlink);
295 devlink_params_notify_register(devlink);
296}
297
298void devlink_notify_unregister(struct devlink *devlink)
299{
300 devlink_params_notify_unregister(devlink);
301 devlink_regions_notify_unregister(devlink);
302 devlink_rates_notify_unregister(devlink);
303 devlink_traps_notify_unregister(devlink);
304 devlink_trap_groups_notify_unregister(devlink);
305 devlink_trap_policers_notify_unregister(devlink);
306 devlink_ports_notify_unregister(devlink);
307 devlink_linecards_notify_unregister(devlink);
308 devlink_notify(devlink, DEVLINK_CMD_DEL);
309}
310
311static void devlink_reload_failed_set(struct devlink *devlink,
312 bool reload_failed)
313{
314 if (devlink->reload_failed == reload_failed)
315 return;
316 devlink->reload_failed = reload_failed;
317 devlink_notify(devlink, DEVLINK_CMD_NEW);
318}
319
320bool devlink_is_reload_failed(const struct devlink *devlink)
321{
322 return devlink->reload_failed;
323}
324EXPORT_SYMBOL_GPL(devlink_is_reload_failed);
325
326static void
327__devlink_reload_stats_update(struct devlink *devlink, u32 *reload_stats,
328 enum devlink_reload_limit limit, u32 actions_performed)
329{
330 unsigned long actions = actions_performed;
331 int stat_idx;
332 int action;
333
334 for_each_set_bit(action, &actions, __DEVLINK_RELOAD_ACTION_MAX) {
335 stat_idx = limit * __DEVLINK_RELOAD_ACTION_MAX + action;
336 reload_stats[stat_idx]++;
337 }
338 devlink_notify(devlink, DEVLINK_CMD_NEW);
339}
340
341static void
342devlink_reload_stats_update(struct devlink *devlink, enum devlink_reload_limit limit,
343 u32 actions_performed)
344{
345 __devlink_reload_stats_update(devlink, devlink->stats.reload_stats, limit,
346 actions_performed);
347}
348
349/**
350 * devlink_remote_reload_actions_performed - Update devlink on reload actions
351 * performed which are not a direct result of devlink reload call.
352 *
353 * This should be called by a driver after performing reload actions in case it was not
354 * a result of devlink reload call. For example fw_activate was performed as a result
355 * of devlink reload triggered fw_activate on another host.
356 * The motivation for this function is to keep data on reload actions performed on this
357 * function whether it was done due to direct devlink reload call or not.
358 *
359 * @devlink: devlink
360 * @limit: reload limit
361 * @actions_performed: bitmask of actions performed
362 */
363void devlink_remote_reload_actions_performed(struct devlink *devlink,
364 enum devlink_reload_limit limit,
365 u32 actions_performed)
366{
367 if (WARN_ON(!actions_performed ||
368 actions_performed & BIT(DEVLINK_RELOAD_ACTION_UNSPEC) ||
369 actions_performed >= BIT(__DEVLINK_RELOAD_ACTION_MAX) ||
370 limit > DEVLINK_RELOAD_LIMIT_MAX))
371 return;
372
373 __devlink_reload_stats_update(devlink, devlink->stats.remote_reload_stats, limit,
374 actions_performed);
375}
376EXPORT_SYMBOL_GPL(devlink_remote_reload_actions_performed);
377
378static struct net *devlink_netns_get(struct sk_buff *skb,
379 struct genl_info *info)
380{
381 struct nlattr *netns_pid_attr = info->attrs[DEVLINK_ATTR_NETNS_PID];
382 struct nlattr *netns_fd_attr = info->attrs[DEVLINK_ATTR_NETNS_FD];
383 struct nlattr *netns_id_attr = info->attrs[DEVLINK_ATTR_NETNS_ID];
384 struct net *net;
385
386 if (!!netns_pid_attr + !!netns_fd_attr + !!netns_id_attr > 1) {
387 NL_SET_ERR_MSG(info->extack, "multiple netns identifying attributes specified");
388 return ERR_PTR(-EINVAL);
389 }
390
391 if (netns_pid_attr) {
392 net = get_net_ns_by_pid(nla_get_u32(netns_pid_attr));
393 } else if (netns_fd_attr) {
394 net = get_net_ns_by_fd(nla_get_u32(netns_fd_attr));
395 } else if (netns_id_attr) {
396 net = get_net_ns_by_id(sock_net(skb->sk),
397 nla_get_u32(netns_id_attr));
398 if (!net)
399 net = ERR_PTR(-EINVAL);
400 } else {
401 WARN_ON(1);
402 net = ERR_PTR(-EINVAL);
403 }
404 if (IS_ERR(net)) {
405 NL_SET_ERR_MSG(info->extack, "Unknown network namespace");
406 return ERR_PTR(-EINVAL);
407 }
408 if (!netlink_ns_capable(skb, net->user_ns, CAP_NET_ADMIN)) {
409 put_net(net);
410 return ERR_PTR(-EPERM);
411 }
412 return net;
413}
414
415static void devlink_reload_netns_change(struct devlink *devlink,
416 struct net *curr_net,
417 struct net *dest_net)
418{
419 /* Userspace needs to be notified about devlink objects
420 * removed from original and entering new network namespace.
421 * The rest of the devlink objects are re-created during
422 * reload process so the notifications are generated separatelly.
423 */
424 devlink_notify_unregister(devlink);
425 write_pnet(&devlink->_net, dest_net);
426 devlink_notify_register(devlink);
427 devlink_rel_nested_in_notify(devlink);
428}
429
430static void devlink_reload_reinit_sanity_check(struct devlink *devlink)
431{
432 WARN_ON(!list_empty(&devlink->trap_policer_list));
433 WARN_ON(!list_empty(&devlink->trap_group_list));
434 WARN_ON(!list_empty(&devlink->trap_list));
435 WARN_ON(!list_empty(&devlink->dpipe_table_list));
436 WARN_ON(!list_empty(&devlink->sb_list));
437 WARN_ON(devlink_rates_check(devlink, NULL, NULL));
438 WARN_ON(!list_empty(&devlink->linecard_list));
439 WARN_ON(!xa_empty(&devlink->ports));
440}
441
442int devlink_reload(struct devlink *devlink, struct net *dest_net,
443 enum devlink_reload_action action,
444 enum devlink_reload_limit limit,
445 u32 *actions_performed, struct netlink_ext_ack *extack)
446{
447 u32 remote_reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE];
448 struct net *curr_net;
449 int err;
450
451 /* Make sure the reload operations are invoked with the device lock
452 * held to allow drivers to trigger functionality that expects it
453 * (e.g., PCI reset) and to close possible races between these
454 * operations and probe/remove.
455 */
456 device_lock_assert(devlink->dev);
457
458 memcpy(remote_reload_stats, devlink->stats.remote_reload_stats,
459 sizeof(remote_reload_stats));
460
461 err = devlink->ops->reload_down(devlink, !!dest_net, action, limit, extack);
462 if (err)
463 return err;
464
465 curr_net = devlink_net(devlink);
466 if (dest_net && !net_eq(dest_net, curr_net))
467 devlink_reload_netns_change(devlink, curr_net, dest_net);
468
469 if (action == DEVLINK_RELOAD_ACTION_DRIVER_REINIT) {
470 devlink_params_driverinit_load_new(devlink);
471 devlink_reload_reinit_sanity_check(devlink);
472 }
473
474 err = devlink->ops->reload_up(devlink, action, limit, actions_performed, extack);
475 devlink_reload_failed_set(devlink, !!err);
476 if (err)
477 return err;
478
479 WARN_ON(!(*actions_performed & BIT(action)));
480 /* Catch driver on updating the remote action within devlink reload */
481 WARN_ON(memcmp(remote_reload_stats, devlink->stats.remote_reload_stats,
482 sizeof(remote_reload_stats)));
483 devlink_reload_stats_update(devlink, limit, *actions_performed);
484 return 0;
485}
486
487static int
488devlink_nl_reload_actions_performed_snd(struct devlink *devlink, u32 actions_performed,
489 enum devlink_command cmd, struct genl_info *info)
490{
491 struct sk_buff *msg;
492 void *hdr;
493
494 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
495 if (!msg)
496 return -ENOMEM;
497
498 hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq, &devlink_nl_family, 0, cmd);
499 if (!hdr)
500 goto free_msg;
501
502 if (devlink_nl_put_handle(msg, devlink))
503 goto nla_put_failure;
504
505 if (nla_put_bitfield32(msg, DEVLINK_ATTR_RELOAD_ACTIONS_PERFORMED, actions_performed,
506 actions_performed))
507 goto nla_put_failure;
508 genlmsg_end(msg, hdr);
509
510 return genlmsg_reply(msg, info);
511
512nla_put_failure:
513 genlmsg_cancel(msg, hdr);
514free_msg:
515 nlmsg_free(msg);
516 return -EMSGSIZE;
517}
518
519int devlink_nl_reload_doit(struct sk_buff *skb, struct genl_info *info)
520{
521 struct devlink *devlink = info->user_ptr[0];
522 enum devlink_reload_action action;
523 enum devlink_reload_limit limit;
524 struct net *dest_net = NULL;
525 u32 actions_performed;
526 int err;
527
528 err = devlink_resources_validate(devlink, NULL, info);
529 if (err) {
530 NL_SET_ERR_MSG(info->extack, "resources size validation failed");
531 return err;
532 }
533
534 action = nla_get_u8_default(info->attrs[DEVLINK_ATTR_RELOAD_ACTION],
535 DEVLINK_RELOAD_ACTION_DRIVER_REINIT);
536
537 if (!devlink_reload_action_is_supported(devlink, action)) {
538 NL_SET_ERR_MSG(info->extack, "Requested reload action is not supported by the driver");
539 return -EOPNOTSUPP;
540 }
541
542 limit = DEVLINK_RELOAD_LIMIT_UNSPEC;
543 if (info->attrs[DEVLINK_ATTR_RELOAD_LIMITS]) {
544 struct nla_bitfield32 limits;
545 u32 limits_selected;
546
547 limits = nla_get_bitfield32(info->attrs[DEVLINK_ATTR_RELOAD_LIMITS]);
548 limits_selected = limits.value & limits.selector;
549 if (!limits_selected) {
550 NL_SET_ERR_MSG(info->extack, "Invalid limit selected");
551 return -EINVAL;
552 }
553 for (limit = 0 ; limit <= DEVLINK_RELOAD_LIMIT_MAX ; limit++)
554 if (limits_selected & BIT(limit))
555 break;
556 /* UAPI enables multiselection, but currently it is not used */
557 if (limits_selected != BIT(limit)) {
558 NL_SET_ERR_MSG(info->extack, "Multiselection of limit is not supported");
559 return -EOPNOTSUPP;
560 }
561 if (!devlink_reload_limit_is_supported(devlink, limit)) {
562 NL_SET_ERR_MSG(info->extack, "Requested limit is not supported by the driver");
563 return -EOPNOTSUPP;
564 }
565 if (devlink_reload_combination_is_invalid(action, limit)) {
566 NL_SET_ERR_MSG(info->extack, "Requested limit is invalid for this action");
567 return -EINVAL;
568 }
569 }
570 if (info->attrs[DEVLINK_ATTR_NETNS_PID] ||
571 info->attrs[DEVLINK_ATTR_NETNS_FD] ||
572 info->attrs[DEVLINK_ATTR_NETNS_ID]) {
573 dest_net = devlink_netns_get(skb, info);
574 if (IS_ERR(dest_net))
575 return PTR_ERR(dest_net);
576 if (!net_eq(dest_net, devlink_net(devlink)) &&
577 action != DEVLINK_RELOAD_ACTION_DRIVER_REINIT) {
578 NL_SET_ERR_MSG_MOD(info->extack,
579 "Changing namespace is only supported for reinit action");
580 return -EOPNOTSUPP;
581 }
582 }
583
584 err = devlink_reload(devlink, dest_net, action, limit, &actions_performed, info->extack);
585
586 if (dest_net)
587 put_net(dest_net);
588
589 if (err)
590 return err;
591 /* For backward compatibility generate reply only if attributes used by user */
592 if (!info->attrs[DEVLINK_ATTR_RELOAD_ACTION] && !info->attrs[DEVLINK_ATTR_RELOAD_LIMITS])
593 return 0;
594
595 return devlink_nl_reload_actions_performed_snd(devlink, actions_performed,
596 DEVLINK_CMD_RELOAD, info);
597}
598
599bool devlink_reload_actions_valid(const struct devlink_ops *ops)
600{
601 const struct devlink_reload_combination *comb;
602 int i;
603
604 if (!devlink_reload_supported(ops)) {
605 if (WARN_ON(ops->reload_actions))
606 return false;
607 return true;
608 }
609
610 if (WARN_ON(!ops->reload_actions ||
611 ops->reload_actions & BIT(DEVLINK_RELOAD_ACTION_UNSPEC) ||
612 ops->reload_actions >= BIT(__DEVLINK_RELOAD_ACTION_MAX)))
613 return false;
614
615 if (WARN_ON(ops->reload_limits & BIT(DEVLINK_RELOAD_LIMIT_UNSPEC) ||
616 ops->reload_limits >= BIT(__DEVLINK_RELOAD_LIMIT_MAX)))
617 return false;
618
619 for (i = 0; i < ARRAY_SIZE(devlink_reload_invalid_combinations); i++) {
620 comb = &devlink_reload_invalid_combinations[i];
621 if (ops->reload_actions == BIT(comb->action) &&
622 ops->reload_limits == BIT(comb->limit))
623 return false;
624 }
625 return true;
626}
627
628static int devlink_nl_eswitch_fill(struct sk_buff *msg, struct devlink *devlink,
629 enum devlink_command cmd, u32 portid,
630 u32 seq, int flags)
631{
632 const struct devlink_ops *ops = devlink->ops;
633 enum devlink_eswitch_encap_mode encap_mode;
634 u8 inline_mode;
635 void *hdr;
636 int err = 0;
637 u16 mode;
638
639 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
640 if (!hdr)
641 return -EMSGSIZE;
642
643 err = devlink_nl_put_handle(msg, devlink);
644 if (err)
645 goto nla_put_failure;
646
647 if (ops->eswitch_mode_get) {
648 err = ops->eswitch_mode_get(devlink, &mode);
649 if (err)
650 goto nla_put_failure;
651 err = nla_put_u16(msg, DEVLINK_ATTR_ESWITCH_MODE, mode);
652 if (err)
653 goto nla_put_failure;
654 }
655
656 if (ops->eswitch_inline_mode_get) {
657 err = ops->eswitch_inline_mode_get(devlink, &inline_mode);
658 if (err)
659 goto nla_put_failure;
660 err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_INLINE_MODE,
661 inline_mode);
662 if (err)
663 goto nla_put_failure;
664 }
665
666 if (ops->eswitch_encap_mode_get) {
667 err = ops->eswitch_encap_mode_get(devlink, &encap_mode);
668 if (err)
669 goto nla_put_failure;
670 err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_ENCAP_MODE, encap_mode);
671 if (err)
672 goto nla_put_failure;
673 }
674
675 genlmsg_end(msg, hdr);
676 return 0;
677
678nla_put_failure:
679 genlmsg_cancel(msg, hdr);
680 return err;
681}
682
683int devlink_nl_eswitch_get_doit(struct sk_buff *skb, struct genl_info *info)
684{
685 struct devlink *devlink = info->user_ptr[0];
686 struct sk_buff *msg;
687 int err;
688
689 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
690 if (!msg)
691 return -ENOMEM;
692
693 err = devlink_nl_eswitch_fill(msg, devlink, DEVLINK_CMD_ESWITCH_GET,
694 info->snd_portid, info->snd_seq, 0);
695
696 if (err) {
697 nlmsg_free(msg);
698 return err;
699 }
700
701 return genlmsg_reply(msg, info);
702}
703
704int devlink_nl_eswitch_set_doit(struct sk_buff *skb, struct genl_info *info)
705{
706 struct devlink *devlink = info->user_ptr[0];
707 const struct devlink_ops *ops = devlink->ops;
708 enum devlink_eswitch_encap_mode encap_mode;
709 u8 inline_mode;
710 int err = 0;
711 u16 mode;
712
713 if (info->attrs[DEVLINK_ATTR_ESWITCH_MODE]) {
714 if (!ops->eswitch_mode_set)
715 return -EOPNOTSUPP;
716 err = devlink_rates_check(devlink, devlink_rate_is_node,
717 info->extack);
718 if (err)
719 return err;
720 mode = nla_get_u16(info->attrs[DEVLINK_ATTR_ESWITCH_MODE]);
721 err = ops->eswitch_mode_set(devlink, mode, info->extack);
722 if (err)
723 return err;
724 }
725
726 if (info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]) {
727 if (!ops->eswitch_inline_mode_set)
728 return -EOPNOTSUPP;
729 inline_mode = nla_get_u8(info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]);
730 err = ops->eswitch_inline_mode_set(devlink, inline_mode,
731 info->extack);
732 if (err)
733 return err;
734 }
735
736 if (info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]) {
737 if (!ops->eswitch_encap_mode_set)
738 return -EOPNOTSUPP;
739 encap_mode = nla_get_u8(info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]);
740 err = ops->eswitch_encap_mode_set(devlink, encap_mode,
741 info->extack);
742 if (err)
743 return err;
744 }
745
746 return 0;
747}
748
749int devlink_info_serial_number_put(struct devlink_info_req *req, const char *sn)
750{
751 if (!req->msg)
752 return 0;
753 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_SERIAL_NUMBER, sn);
754}
755EXPORT_SYMBOL_GPL(devlink_info_serial_number_put);
756
757int devlink_info_board_serial_number_put(struct devlink_info_req *req,
758 const char *bsn)
759{
760 if (!req->msg)
761 return 0;
762 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_BOARD_SERIAL_NUMBER,
763 bsn);
764}
765EXPORT_SYMBOL_GPL(devlink_info_board_serial_number_put);
766
767static int devlink_info_version_put(struct devlink_info_req *req, int attr,
768 const char *version_name,
769 const char *version_value,
770 enum devlink_info_version_type version_type)
771{
772 struct nlattr *nest;
773 int err;
774
775 if (req->version_cb)
776 req->version_cb(version_name, version_type,
777 req->version_cb_priv);
778
779 if (!req->msg || !*version_value)
780 return 0;
781
782 nest = nla_nest_start_noflag(req->msg, attr);
783 if (!nest)
784 return -EMSGSIZE;
785
786 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_NAME,
787 version_name);
788 if (err)
789 goto nla_put_failure;
790
791 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_VALUE,
792 version_value);
793 if (err)
794 goto nla_put_failure;
795
796 nla_nest_end(req->msg, nest);
797
798 return 0;
799
800nla_put_failure:
801 nla_nest_cancel(req->msg, nest);
802 return err;
803}
804
805int devlink_info_version_fixed_put(struct devlink_info_req *req,
806 const char *version_name,
807 const char *version_value)
808{
809 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_FIXED,
810 version_name, version_value,
811 DEVLINK_INFO_VERSION_TYPE_NONE);
812}
813EXPORT_SYMBOL_GPL(devlink_info_version_fixed_put);
814
815int devlink_info_version_stored_put(struct devlink_info_req *req,
816 const char *version_name,
817 const char *version_value)
818{
819 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_STORED,
820 version_name, version_value,
821 DEVLINK_INFO_VERSION_TYPE_NONE);
822}
823EXPORT_SYMBOL_GPL(devlink_info_version_stored_put);
824
825int devlink_info_version_stored_put_ext(struct devlink_info_req *req,
826 const char *version_name,
827 const char *version_value,
828 enum devlink_info_version_type version_type)
829{
830 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_STORED,
831 version_name, version_value,
832 version_type);
833}
834EXPORT_SYMBOL_GPL(devlink_info_version_stored_put_ext);
835
836int devlink_info_version_running_put(struct devlink_info_req *req,
837 const char *version_name,
838 const char *version_value)
839{
840 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_RUNNING,
841 version_name, version_value,
842 DEVLINK_INFO_VERSION_TYPE_NONE);
843}
844EXPORT_SYMBOL_GPL(devlink_info_version_running_put);
845
846int devlink_info_version_running_put_ext(struct devlink_info_req *req,
847 const char *version_name,
848 const char *version_value,
849 enum devlink_info_version_type version_type)
850{
851 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_RUNNING,
852 version_name, version_value,
853 version_type);
854}
855EXPORT_SYMBOL_GPL(devlink_info_version_running_put_ext);
856
857static int devlink_nl_driver_info_get(struct device_driver *drv,
858 struct devlink_info_req *req)
859{
860 if (!drv)
861 return 0;
862
863 if (drv->name[0])
864 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_DRIVER_NAME,
865 drv->name);
866
867 return 0;
868}
869
870static int
871devlink_nl_info_fill(struct sk_buff *msg, struct devlink *devlink,
872 enum devlink_command cmd, u32 portid,
873 u32 seq, int flags, struct netlink_ext_ack *extack)
874{
875 struct device *dev = devlink_to_dev(devlink);
876 struct devlink_info_req req = {};
877 void *hdr;
878 int err;
879
880 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
881 if (!hdr)
882 return -EMSGSIZE;
883
884 err = -EMSGSIZE;
885 if (devlink_nl_put_handle(msg, devlink))
886 goto err_cancel_msg;
887
888 req.msg = msg;
889 if (devlink->ops->info_get) {
890 err = devlink->ops->info_get(devlink, &req, extack);
891 if (err)
892 goto err_cancel_msg;
893 }
894
895 err = devlink_nl_driver_info_get(dev->driver, &req);
896 if (err)
897 goto err_cancel_msg;
898
899 genlmsg_end(msg, hdr);
900 return 0;
901
902err_cancel_msg:
903 genlmsg_cancel(msg, hdr);
904 return err;
905}
906
907int devlink_nl_info_get_doit(struct sk_buff *skb, struct genl_info *info)
908{
909 struct devlink *devlink = info->user_ptr[0];
910 struct sk_buff *msg;
911 int err;
912
913 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
914 if (!msg)
915 return -ENOMEM;
916
917 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
918 info->snd_portid, info->snd_seq, 0,
919 info->extack);
920 if (err) {
921 nlmsg_free(msg);
922 return err;
923 }
924
925 return genlmsg_reply(msg, info);
926}
927
928static int
929devlink_nl_info_get_dump_one(struct sk_buff *msg, struct devlink *devlink,
930 struct netlink_callback *cb, int flags)
931{
932 int err;
933
934 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
935 NETLINK_CB(cb->skb).portid,
936 cb->nlh->nlmsg_seq, flags,
937 cb->extack);
938 if (err == -EOPNOTSUPP)
939 err = 0;
940 return err;
941}
942
943int devlink_nl_info_get_dumpit(struct sk_buff *msg, struct netlink_callback *cb)
944{
945 return devlink_nl_dumpit(msg, cb, devlink_nl_info_get_dump_one);
946}
947
948static int devlink_nl_flash_update_fill(struct sk_buff *msg,
949 struct devlink *devlink,
950 enum devlink_command cmd,
951 struct devlink_flash_notify *params)
952{
953 void *hdr;
954
955 hdr = genlmsg_put(msg, 0, 0, &devlink_nl_family, 0, cmd);
956 if (!hdr)
957 return -EMSGSIZE;
958
959 if (devlink_nl_put_handle(msg, devlink))
960 goto nla_put_failure;
961
962 if (cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS)
963 goto out;
964
965 if (params->status_msg &&
966 nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_MSG,
967 params->status_msg))
968 goto nla_put_failure;
969 if (params->component &&
970 nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_COMPONENT,
971 params->component))
972 goto nla_put_failure;
973 if (devlink_nl_put_u64(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_DONE,
974 params->done))
975 goto nla_put_failure;
976 if (devlink_nl_put_u64(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TOTAL,
977 params->total))
978 goto nla_put_failure;
979 if (devlink_nl_put_u64(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TIMEOUT,
980 params->timeout))
981 goto nla_put_failure;
982
983out:
984 genlmsg_end(msg, hdr);
985 return 0;
986
987nla_put_failure:
988 genlmsg_cancel(msg, hdr);
989 return -EMSGSIZE;
990}
991
992static void __devlink_flash_update_notify(struct devlink *devlink,
993 enum devlink_command cmd,
994 struct devlink_flash_notify *params)
995{
996 struct sk_buff *msg;
997 int err;
998
999 WARN_ON(cmd != DEVLINK_CMD_FLASH_UPDATE &&
1000 cmd != DEVLINK_CMD_FLASH_UPDATE_END &&
1001 cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS);
1002
1003 if (!devl_is_registered(devlink) || !devlink_nl_notify_need(devlink))
1004 return;
1005
1006 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1007 if (!msg)
1008 return;
1009
1010 err = devlink_nl_flash_update_fill(msg, devlink, cmd, params);
1011 if (err)
1012 goto out_free_msg;
1013
1014 devlink_nl_notify_send(devlink, msg);
1015 return;
1016
1017out_free_msg:
1018 nlmsg_free(msg);
1019}
1020
1021static void devlink_flash_update_begin_notify(struct devlink *devlink)
1022{
1023 struct devlink_flash_notify params = {};
1024
1025 __devlink_flash_update_notify(devlink,
1026 DEVLINK_CMD_FLASH_UPDATE,
1027 &params);
1028}
1029
1030static void devlink_flash_update_end_notify(struct devlink *devlink)
1031{
1032 struct devlink_flash_notify params = {};
1033
1034 __devlink_flash_update_notify(devlink,
1035 DEVLINK_CMD_FLASH_UPDATE_END,
1036 &params);
1037}
1038
1039void devlink_flash_update_status_notify(struct devlink *devlink,
1040 const char *status_msg,
1041 const char *component,
1042 unsigned long done,
1043 unsigned long total)
1044{
1045 struct devlink_flash_notify params = {
1046 .status_msg = status_msg,
1047 .component = component,
1048 .done = done,
1049 .total = total,
1050 };
1051
1052 __devlink_flash_update_notify(devlink,
1053 DEVLINK_CMD_FLASH_UPDATE_STATUS,
1054 &params);
1055}
1056EXPORT_SYMBOL_GPL(devlink_flash_update_status_notify);
1057
1058void devlink_flash_update_timeout_notify(struct devlink *devlink,
1059 const char *status_msg,
1060 const char *component,
1061 unsigned long timeout)
1062{
1063 struct devlink_flash_notify params = {
1064 .status_msg = status_msg,
1065 .component = component,
1066 .timeout = timeout,
1067 };
1068
1069 __devlink_flash_update_notify(devlink,
1070 DEVLINK_CMD_FLASH_UPDATE_STATUS,
1071 &params);
1072}
1073EXPORT_SYMBOL_GPL(devlink_flash_update_timeout_notify);
1074
1075struct devlink_flash_component_lookup_ctx {
1076 const char *lookup_name;
1077 bool lookup_name_found;
1078};
1079
1080static void
1081devlink_flash_component_lookup_cb(const char *version_name,
1082 enum devlink_info_version_type version_type,
1083 void *version_cb_priv)
1084{
1085 struct devlink_flash_component_lookup_ctx *lookup_ctx = version_cb_priv;
1086
1087 if (version_type != DEVLINK_INFO_VERSION_TYPE_COMPONENT ||
1088 lookup_ctx->lookup_name_found)
1089 return;
1090
1091 lookup_ctx->lookup_name_found =
1092 !strcmp(lookup_ctx->lookup_name, version_name);
1093}
1094
1095static int devlink_flash_component_get(struct devlink *devlink,
1096 struct nlattr *nla_component,
1097 const char **p_component,
1098 struct netlink_ext_ack *extack)
1099{
1100 struct devlink_flash_component_lookup_ctx lookup_ctx = {};
1101 struct devlink_info_req req = {};
1102 const char *component;
1103 int ret;
1104
1105 if (!nla_component)
1106 return 0;
1107
1108 component = nla_data(nla_component);
1109
1110 if (!devlink->ops->info_get) {
1111 NL_SET_ERR_MSG_ATTR(extack, nla_component,
1112 "component update is not supported by this device");
1113 return -EOPNOTSUPP;
1114 }
1115
1116 lookup_ctx.lookup_name = component;
1117 req.version_cb = devlink_flash_component_lookup_cb;
1118 req.version_cb_priv = &lookup_ctx;
1119
1120 ret = devlink->ops->info_get(devlink, &req, NULL);
1121 if (ret)
1122 return ret;
1123
1124 if (!lookup_ctx.lookup_name_found) {
1125 NL_SET_ERR_MSG_ATTR(extack, nla_component,
1126 "selected component is not supported by this device");
1127 return -EINVAL;
1128 }
1129 *p_component = component;
1130 return 0;
1131}
1132
1133int devlink_nl_flash_update_doit(struct sk_buff *skb, struct genl_info *info)
1134{
1135 struct nlattr *nla_overwrite_mask, *nla_file_name;
1136 struct devlink_flash_update_params params = {};
1137 struct devlink *devlink = info->user_ptr[0];
1138 const char *file_name;
1139 u32 supported_params;
1140 int ret;
1141
1142 if (!devlink->ops->flash_update)
1143 return -EOPNOTSUPP;
1144
1145 if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME))
1146 return -EINVAL;
1147
1148 ret = devlink_flash_component_get(devlink,
1149 info->attrs[DEVLINK_ATTR_FLASH_UPDATE_COMPONENT],
1150 &params.component, info->extack);
1151 if (ret)
1152 return ret;
1153
1154 supported_params = devlink->ops->supported_flash_update_params;
1155
1156 nla_overwrite_mask = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_OVERWRITE_MASK];
1157 if (nla_overwrite_mask) {
1158 struct nla_bitfield32 sections;
1159
1160 if (!(supported_params & DEVLINK_SUPPORT_FLASH_UPDATE_OVERWRITE_MASK)) {
1161 NL_SET_ERR_MSG_ATTR(info->extack, nla_overwrite_mask,
1162 "overwrite settings are not supported by this device");
1163 return -EOPNOTSUPP;
1164 }
1165 sections = nla_get_bitfield32(nla_overwrite_mask);
1166 params.overwrite_mask = sections.value & sections.selector;
1167 }
1168
1169 nla_file_name = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME];
1170 file_name = nla_data(nla_file_name);
1171 ret = request_firmware(&params.fw, file_name, devlink->dev);
1172 if (ret) {
1173 NL_SET_ERR_MSG_ATTR(info->extack, nla_file_name,
1174 "failed to locate the requested firmware file");
1175 return ret;
1176 }
1177
1178 devlink_flash_update_begin_notify(devlink);
1179 ret = devlink->ops->flash_update(devlink, &params, info->extack);
1180 devlink_flash_update_end_notify(devlink);
1181
1182 release_firmware(params.fw);
1183
1184 return ret;
1185}
1186
1187static void __devlink_compat_running_version(struct devlink *devlink,
1188 char *buf, size_t len)
1189{
1190 struct devlink_info_req req = {};
1191 const struct nlattr *nlattr;
1192 struct sk_buff *msg;
1193 int rem, err;
1194
1195 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1196 if (!msg)
1197 return;
1198
1199 req.msg = msg;
1200 err = devlink->ops->info_get(devlink, &req, NULL);
1201 if (err)
1202 goto free_msg;
1203
1204 nla_for_each_attr_type(nlattr, DEVLINK_ATTR_INFO_VERSION_RUNNING,
1205 (void *)msg->data, msg->len, rem) {
1206 const struct nlattr *kv;
1207 int rem_kv;
1208
1209 nla_for_each_nested_type(kv, DEVLINK_ATTR_INFO_VERSION_VALUE,
1210 nlattr, rem_kv) {
1211 strlcat(buf, nla_data(kv), len);
1212 strlcat(buf, " ", len);
1213 }
1214 }
1215free_msg:
1216 nlmsg_consume(msg);
1217}
1218
1219void devlink_compat_running_version(struct devlink *devlink,
1220 char *buf, size_t len)
1221{
1222 if (!devlink->ops->info_get)
1223 return;
1224
1225 devl_lock(devlink);
1226 if (devl_is_registered(devlink))
1227 __devlink_compat_running_version(devlink, buf, len);
1228 devl_unlock(devlink);
1229}
1230
1231int devlink_compat_flash_update(struct devlink *devlink, const char *file_name)
1232{
1233 struct devlink_flash_update_params params = {};
1234 int ret;
1235
1236 devl_lock(devlink);
1237 if (!devl_is_registered(devlink)) {
1238 ret = -ENODEV;
1239 goto out_unlock;
1240 }
1241
1242 if (!devlink->ops->flash_update) {
1243 ret = -EOPNOTSUPP;
1244 goto out_unlock;
1245 }
1246
1247 ret = request_firmware(&params.fw, file_name, devlink->dev);
1248 if (ret)
1249 goto out_unlock;
1250
1251 devlink_flash_update_begin_notify(devlink);
1252 ret = devlink->ops->flash_update(devlink, &params, NULL);
1253 devlink_flash_update_end_notify(devlink);
1254
1255 release_firmware(params.fw);
1256out_unlock:
1257 devl_unlock(devlink);
1258
1259 return ret;
1260}
1261
1262static int
1263devlink_nl_selftests_fill(struct sk_buff *msg, struct devlink *devlink,
1264 u32 portid, u32 seq, int flags,
1265 struct netlink_ext_ack *extack)
1266{
1267 struct nlattr *selftests;
1268 void *hdr;
1269 int err;
1270 int i;
1271
1272 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags,
1273 DEVLINK_CMD_SELFTESTS_GET);
1274 if (!hdr)
1275 return -EMSGSIZE;
1276
1277 err = -EMSGSIZE;
1278 if (devlink_nl_put_handle(msg, devlink))
1279 goto err_cancel_msg;
1280
1281 selftests = nla_nest_start(msg, DEVLINK_ATTR_SELFTESTS);
1282 if (!selftests)
1283 goto err_cancel_msg;
1284
1285 for (i = DEVLINK_ATTR_SELFTEST_ID_UNSPEC + 1;
1286 i <= DEVLINK_ATTR_SELFTEST_ID_MAX; i++) {
1287 if (devlink->ops->selftest_check(devlink, i, extack)) {
1288 err = nla_put_flag(msg, i);
1289 if (err)
1290 goto err_cancel_msg;
1291 }
1292 }
1293
1294 nla_nest_end(msg, selftests);
1295 genlmsg_end(msg, hdr);
1296 return 0;
1297
1298err_cancel_msg:
1299 genlmsg_cancel(msg, hdr);
1300 return err;
1301}
1302
1303int devlink_nl_selftests_get_doit(struct sk_buff *skb, struct genl_info *info)
1304{
1305 struct devlink *devlink = info->user_ptr[0];
1306 struct sk_buff *msg;
1307 int err;
1308
1309 if (!devlink->ops->selftest_check)
1310 return -EOPNOTSUPP;
1311
1312 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1313 if (!msg)
1314 return -ENOMEM;
1315
1316 err = devlink_nl_selftests_fill(msg, devlink, info->snd_portid,
1317 info->snd_seq, 0, info->extack);
1318 if (err) {
1319 nlmsg_free(msg);
1320 return err;
1321 }
1322
1323 return genlmsg_reply(msg, info);
1324}
1325
1326static int devlink_nl_selftests_get_dump_one(struct sk_buff *msg,
1327 struct devlink *devlink,
1328 struct netlink_callback *cb,
1329 int flags)
1330{
1331 if (!devlink->ops->selftest_check)
1332 return 0;
1333
1334 return devlink_nl_selftests_fill(msg, devlink,
1335 NETLINK_CB(cb->skb).portid,
1336 cb->nlh->nlmsg_seq, flags,
1337 cb->extack);
1338}
1339
1340int devlink_nl_selftests_get_dumpit(struct sk_buff *skb,
1341 struct netlink_callback *cb)
1342{
1343 return devlink_nl_dumpit(skb, cb, devlink_nl_selftests_get_dump_one);
1344}
1345
1346static int devlink_selftest_result_put(struct sk_buff *skb, unsigned int id,
1347 enum devlink_selftest_status test_status)
1348{
1349 struct nlattr *result_attr;
1350
1351 result_attr = nla_nest_start(skb, DEVLINK_ATTR_SELFTEST_RESULT);
1352 if (!result_attr)
1353 return -EMSGSIZE;
1354
1355 if (nla_put_u32(skb, DEVLINK_ATTR_SELFTEST_RESULT_ID, id) ||
1356 nla_put_u8(skb, DEVLINK_ATTR_SELFTEST_RESULT_STATUS,
1357 test_status))
1358 goto nla_put_failure;
1359
1360 nla_nest_end(skb, result_attr);
1361 return 0;
1362
1363nla_put_failure:
1364 nla_nest_cancel(skb, result_attr);
1365 return -EMSGSIZE;
1366}
1367
1368static const struct nla_policy devlink_selftest_nl_policy[DEVLINK_ATTR_SELFTEST_ID_MAX + 1] = {
1369 [DEVLINK_ATTR_SELFTEST_ID_FLASH] = { .type = NLA_FLAG },
1370};
1371
1372int devlink_nl_selftests_run_doit(struct sk_buff *skb, struct genl_info *info)
1373{
1374 struct nlattr *tb[DEVLINK_ATTR_SELFTEST_ID_MAX + 1];
1375 struct devlink *devlink = info->user_ptr[0];
1376 struct nlattr *attrs, *selftests;
1377 struct sk_buff *msg;
1378 void *hdr;
1379 int err;
1380 int i;
1381
1382 if (!devlink->ops->selftest_run || !devlink->ops->selftest_check)
1383 return -EOPNOTSUPP;
1384
1385 if (GENL_REQ_ATTR_CHECK(info, DEVLINK_ATTR_SELFTESTS))
1386 return -EINVAL;
1387
1388 attrs = info->attrs[DEVLINK_ATTR_SELFTESTS];
1389
1390 err = nla_parse_nested(tb, DEVLINK_ATTR_SELFTEST_ID_MAX, attrs,
1391 devlink_selftest_nl_policy, info->extack);
1392 if (err < 0)
1393 return err;
1394
1395 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1396 if (!msg)
1397 return -ENOMEM;
1398
1399 err = -EMSGSIZE;
1400 hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq,
1401 &devlink_nl_family, 0, DEVLINK_CMD_SELFTESTS_RUN);
1402 if (!hdr)
1403 goto free_msg;
1404
1405 if (devlink_nl_put_handle(msg, devlink))
1406 goto genlmsg_cancel;
1407
1408 selftests = nla_nest_start(msg, DEVLINK_ATTR_SELFTESTS);
1409 if (!selftests)
1410 goto genlmsg_cancel;
1411
1412 for (i = DEVLINK_ATTR_SELFTEST_ID_UNSPEC + 1;
1413 i <= DEVLINK_ATTR_SELFTEST_ID_MAX; i++) {
1414 enum devlink_selftest_status test_status;
1415
1416 if (nla_get_flag(tb[i])) {
1417 if (!devlink->ops->selftest_check(devlink, i,
1418 info->extack)) {
1419 if (devlink_selftest_result_put(msg, i,
1420 DEVLINK_SELFTEST_STATUS_SKIP))
1421 goto selftests_nest_cancel;
1422 continue;
1423 }
1424
1425 test_status = devlink->ops->selftest_run(devlink, i,
1426 info->extack);
1427 if (devlink_selftest_result_put(msg, i, test_status))
1428 goto selftests_nest_cancel;
1429 }
1430 }
1431
1432 nla_nest_end(msg, selftests);
1433 genlmsg_end(msg, hdr);
1434 return genlmsg_reply(msg, info);
1435
1436selftests_nest_cancel:
1437 nla_nest_cancel(msg, selftests);
1438genlmsg_cancel:
1439 genlmsg_cancel(msg, hdr);
1440free_msg:
1441 nlmsg_free(msg);
1442 return err;
1443}