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10#include <linux/kernel.h>
11#include <linux/module.h>
12#include <linux/types.h>
13#include <linux/slab.h>
14#include <linux/gfp.h>
15#include <linux/device.h>
16#include <linux/list.h>
17#include <linux/netdevice.h>
18#include <linux/spinlock.h>
19#include <linux/refcount.h>
20#include <linux/workqueue.h>
21#include <linux/u64_stats_sync.h>
22#include <linux/timekeeping.h>
23#include <rdma/ib_verbs.h>
24#include <net/netlink.h>
25#include <net/genetlink.h>
26#include <net/rtnetlink.h>
27#include <net/net_namespace.h>
28#include <net/sock.h>
29#include <net/devlink.h>
30#define CREATE_TRACE_POINTS
31#include <trace/events/devlink.h>
32
33static struct devlink_dpipe_field devlink_dpipe_fields_ethernet[] = {
34 {
35 .name = "destination mac",
36 .id = DEVLINK_DPIPE_FIELD_ETHERNET_DST_MAC,
37 .bitwidth = 48,
38 },
39};
40
41struct devlink_dpipe_header devlink_dpipe_header_ethernet = {
42 .name = "ethernet",
43 .id = DEVLINK_DPIPE_HEADER_ETHERNET,
44 .fields = devlink_dpipe_fields_ethernet,
45 .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ethernet),
46 .global = true,
47};
48EXPORT_SYMBOL(devlink_dpipe_header_ethernet);
49
50static struct devlink_dpipe_field devlink_dpipe_fields_ipv4[] = {
51 {
52 .name = "destination ip",
53 .id = DEVLINK_DPIPE_FIELD_IPV4_DST_IP,
54 .bitwidth = 32,
55 },
56};
57
58struct devlink_dpipe_header devlink_dpipe_header_ipv4 = {
59 .name = "ipv4",
60 .id = DEVLINK_DPIPE_HEADER_IPV4,
61 .fields = devlink_dpipe_fields_ipv4,
62 .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv4),
63 .global = true,
64};
65EXPORT_SYMBOL(devlink_dpipe_header_ipv4);
66
67static struct devlink_dpipe_field devlink_dpipe_fields_ipv6[] = {
68 {
69 .name = "destination ip",
70 .id = DEVLINK_DPIPE_FIELD_IPV6_DST_IP,
71 .bitwidth = 128,
72 },
73};
74
75struct devlink_dpipe_header devlink_dpipe_header_ipv6 = {
76 .name = "ipv6",
77 .id = DEVLINK_DPIPE_HEADER_IPV6,
78 .fields = devlink_dpipe_fields_ipv6,
79 .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv6),
80 .global = true,
81};
82EXPORT_SYMBOL(devlink_dpipe_header_ipv6);
83
84EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwmsg);
85EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwerr);
86EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_trap_report);
87
88static const struct nla_policy devlink_function_nl_policy[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1] = {
89 [DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR] = { .type = NLA_BINARY },
90 [DEVLINK_PORT_FN_ATTR_STATE] =
91 NLA_POLICY_RANGE(NLA_U8, DEVLINK_PORT_FN_STATE_INACTIVE,
92 DEVLINK_PORT_FN_STATE_ACTIVE),
93};
94
95static DEFINE_XARRAY_FLAGS(devlinks, XA_FLAGS_ALLOC);
96#define DEVLINK_REGISTERED XA_MARK_1
97
98
99
100
101
102
103
104static DEFINE_MUTEX(devlink_mutex);
105
106struct net *devlink_net(const struct devlink *devlink)
107{
108 return read_pnet(&devlink->_net);
109}
110EXPORT_SYMBOL_GPL(devlink_net);
111
112static void devlink_put(struct devlink *devlink)
113{
114 if (refcount_dec_and_test(&devlink->refcount))
115 complete(&devlink->comp);
116}
117
118static bool __must_check devlink_try_get(struct devlink *devlink)
119{
120 return refcount_inc_not_zero(&devlink->refcount);
121}
122
123static struct devlink *devlink_get_from_attrs(struct net *net,
124 struct nlattr **attrs)
125{
126 struct devlink *devlink;
127 unsigned long index;
128 bool found = false;
129 char *busname;
130 char *devname;
131
132 if (!attrs[DEVLINK_ATTR_BUS_NAME] || !attrs[DEVLINK_ATTR_DEV_NAME])
133 return ERR_PTR(-EINVAL);
134
135 busname = nla_data(attrs[DEVLINK_ATTR_BUS_NAME]);
136 devname = nla_data(attrs[DEVLINK_ATTR_DEV_NAME]);
137
138 lockdep_assert_held(&devlink_mutex);
139
140 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
141 if (strcmp(devlink->dev->bus->name, busname) == 0 &&
142 strcmp(dev_name(devlink->dev), devname) == 0 &&
143 net_eq(devlink_net(devlink), net)) {
144 found = true;
145 break;
146 }
147 }
148
149 if (!found || !devlink_try_get(devlink))
150 devlink = ERR_PTR(-ENODEV);
151
152 return devlink;
153}
154
155static struct devlink_port *devlink_port_get_by_index(struct devlink *devlink,
156 unsigned int port_index)
157{
158 struct devlink_port *devlink_port;
159
160 list_for_each_entry(devlink_port, &devlink->port_list, list) {
161 if (devlink_port->index == port_index)
162 return devlink_port;
163 }
164 return NULL;
165}
166
167static bool devlink_port_index_exists(struct devlink *devlink,
168 unsigned int port_index)
169{
170 return devlink_port_get_by_index(devlink, port_index);
171}
172
173static struct devlink_port *devlink_port_get_from_attrs(struct devlink *devlink,
174 struct nlattr **attrs)
175{
176 if (attrs[DEVLINK_ATTR_PORT_INDEX]) {
177 u32 port_index = nla_get_u32(attrs[DEVLINK_ATTR_PORT_INDEX]);
178 struct devlink_port *devlink_port;
179
180 devlink_port = devlink_port_get_by_index(devlink, port_index);
181 if (!devlink_port)
182 return ERR_PTR(-ENODEV);
183 return devlink_port;
184 }
185 return ERR_PTR(-EINVAL);
186}
187
188static struct devlink_port *devlink_port_get_from_info(struct devlink *devlink,
189 struct genl_info *info)
190{
191 return devlink_port_get_from_attrs(devlink, info->attrs);
192}
193
194static inline bool
195devlink_rate_is_leaf(struct devlink_rate *devlink_rate)
196{
197 return devlink_rate->type == DEVLINK_RATE_TYPE_LEAF;
198}
199
200static inline bool
201devlink_rate_is_node(struct devlink_rate *devlink_rate)
202{
203 return devlink_rate->type == DEVLINK_RATE_TYPE_NODE;
204}
205
206static struct devlink_rate *
207devlink_rate_leaf_get_from_info(struct devlink *devlink, struct genl_info *info)
208{
209 struct devlink_rate *devlink_rate;
210 struct devlink_port *devlink_port;
211
212 devlink_port = devlink_port_get_from_attrs(devlink, info->attrs);
213 if (IS_ERR(devlink_port))
214 return ERR_CAST(devlink_port);
215 devlink_rate = devlink_port->devlink_rate;
216 return devlink_rate ?: ERR_PTR(-ENODEV);
217}
218
219static struct devlink_rate *
220devlink_rate_node_get_by_name(struct devlink *devlink, const char *node_name)
221{
222 static struct devlink_rate *devlink_rate;
223
224 list_for_each_entry(devlink_rate, &devlink->rate_list, list) {
225 if (devlink_rate_is_node(devlink_rate) &&
226 !strcmp(node_name, devlink_rate->name))
227 return devlink_rate;
228 }
229 return ERR_PTR(-ENODEV);
230}
231
232static struct devlink_rate *
233devlink_rate_node_get_from_attrs(struct devlink *devlink, struct nlattr **attrs)
234{
235 const char *rate_node_name;
236 size_t len;
237
238 if (!attrs[DEVLINK_ATTR_RATE_NODE_NAME])
239 return ERR_PTR(-EINVAL);
240 rate_node_name = nla_data(attrs[DEVLINK_ATTR_RATE_NODE_NAME]);
241 len = strlen(rate_node_name);
242
243 if (!len || strspn(rate_node_name, "0123456789") == len)
244 return ERR_PTR(-EINVAL);
245
246 return devlink_rate_node_get_by_name(devlink, rate_node_name);
247}
248
249static struct devlink_rate *
250devlink_rate_node_get_from_info(struct devlink *devlink, struct genl_info *info)
251{
252 return devlink_rate_node_get_from_attrs(devlink, info->attrs);
253}
254
255static struct devlink_rate *
256devlink_rate_get_from_info(struct devlink *devlink, struct genl_info *info)
257{
258 struct nlattr **attrs = info->attrs;
259
260 if (attrs[DEVLINK_ATTR_PORT_INDEX])
261 return devlink_rate_leaf_get_from_info(devlink, info);
262 else if (attrs[DEVLINK_ATTR_RATE_NODE_NAME])
263 return devlink_rate_node_get_from_info(devlink, info);
264 else
265 return ERR_PTR(-EINVAL);
266}
267
268struct devlink_sb {
269 struct list_head list;
270 unsigned int index;
271 u32 size;
272 u16 ingress_pools_count;
273 u16 egress_pools_count;
274 u16 ingress_tc_count;
275 u16 egress_tc_count;
276};
277
278static u16 devlink_sb_pool_count(struct devlink_sb *devlink_sb)
279{
280 return devlink_sb->ingress_pools_count + devlink_sb->egress_pools_count;
281}
282
283static struct devlink_sb *devlink_sb_get_by_index(struct devlink *devlink,
284 unsigned int sb_index)
285{
286 struct devlink_sb *devlink_sb;
287
288 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
289 if (devlink_sb->index == sb_index)
290 return devlink_sb;
291 }
292 return NULL;
293}
294
295static bool devlink_sb_index_exists(struct devlink *devlink,
296 unsigned int sb_index)
297{
298 return devlink_sb_get_by_index(devlink, sb_index);
299}
300
301static struct devlink_sb *devlink_sb_get_from_attrs(struct devlink *devlink,
302 struct nlattr **attrs)
303{
304 if (attrs[DEVLINK_ATTR_SB_INDEX]) {
305 u32 sb_index = nla_get_u32(attrs[DEVLINK_ATTR_SB_INDEX]);
306 struct devlink_sb *devlink_sb;
307
308 devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
309 if (!devlink_sb)
310 return ERR_PTR(-ENODEV);
311 return devlink_sb;
312 }
313 return ERR_PTR(-EINVAL);
314}
315
316static struct devlink_sb *devlink_sb_get_from_info(struct devlink *devlink,
317 struct genl_info *info)
318{
319 return devlink_sb_get_from_attrs(devlink, info->attrs);
320}
321
322static int devlink_sb_pool_index_get_from_attrs(struct devlink_sb *devlink_sb,
323 struct nlattr **attrs,
324 u16 *p_pool_index)
325{
326 u16 val;
327
328 if (!attrs[DEVLINK_ATTR_SB_POOL_INDEX])
329 return -EINVAL;
330
331 val = nla_get_u16(attrs[DEVLINK_ATTR_SB_POOL_INDEX]);
332 if (val >= devlink_sb_pool_count(devlink_sb))
333 return -EINVAL;
334 *p_pool_index = val;
335 return 0;
336}
337
338static int devlink_sb_pool_index_get_from_info(struct devlink_sb *devlink_sb,
339 struct genl_info *info,
340 u16 *p_pool_index)
341{
342 return devlink_sb_pool_index_get_from_attrs(devlink_sb, info->attrs,
343 p_pool_index);
344}
345
346static int
347devlink_sb_pool_type_get_from_attrs(struct nlattr **attrs,
348 enum devlink_sb_pool_type *p_pool_type)
349{
350 u8 val;
351
352 if (!attrs[DEVLINK_ATTR_SB_POOL_TYPE])
353 return -EINVAL;
354
355 val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_TYPE]);
356 if (val != DEVLINK_SB_POOL_TYPE_INGRESS &&
357 val != DEVLINK_SB_POOL_TYPE_EGRESS)
358 return -EINVAL;
359 *p_pool_type = val;
360 return 0;
361}
362
363static int
364devlink_sb_pool_type_get_from_info(struct genl_info *info,
365 enum devlink_sb_pool_type *p_pool_type)
366{
367 return devlink_sb_pool_type_get_from_attrs(info->attrs, p_pool_type);
368}
369
370static int
371devlink_sb_th_type_get_from_attrs(struct nlattr **attrs,
372 enum devlink_sb_threshold_type *p_th_type)
373{
374 u8 val;
375
376 if (!attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE])
377 return -EINVAL;
378
379 val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE]);
380 if (val != DEVLINK_SB_THRESHOLD_TYPE_STATIC &&
381 val != DEVLINK_SB_THRESHOLD_TYPE_DYNAMIC)
382 return -EINVAL;
383 *p_th_type = val;
384 return 0;
385}
386
387static int
388devlink_sb_th_type_get_from_info(struct genl_info *info,
389 enum devlink_sb_threshold_type *p_th_type)
390{
391 return devlink_sb_th_type_get_from_attrs(info->attrs, p_th_type);
392}
393
394static int
395devlink_sb_tc_index_get_from_attrs(struct devlink_sb *devlink_sb,
396 struct nlattr **attrs,
397 enum devlink_sb_pool_type pool_type,
398 u16 *p_tc_index)
399{
400 u16 val;
401
402 if (!attrs[DEVLINK_ATTR_SB_TC_INDEX])
403 return -EINVAL;
404
405 val = nla_get_u16(attrs[DEVLINK_ATTR_SB_TC_INDEX]);
406 if (pool_type == DEVLINK_SB_POOL_TYPE_INGRESS &&
407 val >= devlink_sb->ingress_tc_count)
408 return -EINVAL;
409 if (pool_type == DEVLINK_SB_POOL_TYPE_EGRESS &&
410 val >= devlink_sb->egress_tc_count)
411 return -EINVAL;
412 *p_tc_index = val;
413 return 0;
414}
415
416static int
417devlink_sb_tc_index_get_from_info(struct devlink_sb *devlink_sb,
418 struct genl_info *info,
419 enum devlink_sb_pool_type pool_type,
420 u16 *p_tc_index)
421{
422 return devlink_sb_tc_index_get_from_attrs(devlink_sb, info->attrs,
423 pool_type, p_tc_index);
424}
425
426struct devlink_region {
427 struct devlink *devlink;
428 struct devlink_port *port;
429 struct list_head list;
430 union {
431 const struct devlink_region_ops *ops;
432 const struct devlink_port_region_ops *port_ops;
433 };
434 struct list_head snapshot_list;
435 u32 max_snapshots;
436 u32 cur_snapshots;
437 u64 size;
438};
439
440struct devlink_snapshot {
441 struct list_head list;
442 struct devlink_region *region;
443 u8 *data;
444 u32 id;
445};
446
447static struct devlink_region *
448devlink_region_get_by_name(struct devlink *devlink, const char *region_name)
449{
450 struct devlink_region *region;
451
452 list_for_each_entry(region, &devlink->region_list, list)
453 if (!strcmp(region->ops->name, region_name))
454 return region;
455
456 return NULL;
457}
458
459static struct devlink_region *
460devlink_port_region_get_by_name(struct devlink_port *port,
461 const char *region_name)
462{
463 struct devlink_region *region;
464
465 list_for_each_entry(region, &port->region_list, list)
466 if (!strcmp(region->ops->name, region_name))
467 return region;
468
469 return NULL;
470}
471
472static struct devlink_snapshot *
473devlink_region_snapshot_get_by_id(struct devlink_region *region, u32 id)
474{
475 struct devlink_snapshot *snapshot;
476
477 list_for_each_entry(snapshot, ®ion->snapshot_list, list)
478 if (snapshot->id == id)
479 return snapshot;
480
481 return NULL;
482}
483
484#define DEVLINK_NL_FLAG_NEED_PORT BIT(0)
485#define DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT BIT(1)
486#define DEVLINK_NL_FLAG_NEED_RATE BIT(2)
487#define DEVLINK_NL_FLAG_NEED_RATE_NODE BIT(3)
488
489
490
491
492
493#define DEVLINK_NL_FLAG_NO_LOCK BIT(4)
494
495static int devlink_nl_pre_doit(const struct genl_ops *ops,
496 struct sk_buff *skb, struct genl_info *info)
497{
498 struct devlink_port *devlink_port;
499 struct devlink *devlink;
500 int err;
501
502 mutex_lock(&devlink_mutex);
503 devlink = devlink_get_from_attrs(genl_info_net(info), info->attrs);
504 if (IS_ERR(devlink)) {
505 mutex_unlock(&devlink_mutex);
506 return PTR_ERR(devlink);
507 }
508 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
509 mutex_lock(&devlink->lock);
510 info->user_ptr[0] = devlink;
511 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT) {
512 devlink_port = devlink_port_get_from_info(devlink, info);
513 if (IS_ERR(devlink_port)) {
514 err = PTR_ERR(devlink_port);
515 goto unlock;
516 }
517 info->user_ptr[1] = devlink_port;
518 } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT) {
519 devlink_port = devlink_port_get_from_info(devlink, info);
520 if (!IS_ERR(devlink_port))
521 info->user_ptr[1] = devlink_port;
522 } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_RATE) {
523 struct devlink_rate *devlink_rate;
524
525 devlink_rate = devlink_rate_get_from_info(devlink, info);
526 if (IS_ERR(devlink_rate)) {
527 err = PTR_ERR(devlink_rate);
528 goto unlock;
529 }
530 info->user_ptr[1] = devlink_rate;
531 } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_RATE_NODE) {
532 struct devlink_rate *rate_node;
533
534 rate_node = devlink_rate_node_get_from_info(devlink, info);
535 if (IS_ERR(rate_node)) {
536 err = PTR_ERR(rate_node);
537 goto unlock;
538 }
539 info->user_ptr[1] = rate_node;
540 }
541 return 0;
542
543unlock:
544 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
545 mutex_unlock(&devlink->lock);
546 devlink_put(devlink);
547 mutex_unlock(&devlink_mutex);
548 return err;
549}
550
551static void devlink_nl_post_doit(const struct genl_ops *ops,
552 struct sk_buff *skb, struct genl_info *info)
553{
554 struct devlink *devlink;
555
556 devlink = info->user_ptr[0];
557 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
558 mutex_unlock(&devlink->lock);
559 devlink_put(devlink);
560 mutex_unlock(&devlink_mutex);
561}
562
563static struct genl_family devlink_nl_family;
564
565enum devlink_multicast_groups {
566 DEVLINK_MCGRP_CONFIG,
567};
568
569static const struct genl_multicast_group devlink_nl_mcgrps[] = {
570 [DEVLINK_MCGRP_CONFIG] = { .name = DEVLINK_GENL_MCGRP_CONFIG_NAME },
571};
572
573static int devlink_nl_put_handle(struct sk_buff *msg, struct devlink *devlink)
574{
575 if (nla_put_string(msg, DEVLINK_ATTR_BUS_NAME, devlink->dev->bus->name))
576 return -EMSGSIZE;
577 if (nla_put_string(msg, DEVLINK_ATTR_DEV_NAME, dev_name(devlink->dev)))
578 return -EMSGSIZE;
579 return 0;
580}
581
582struct devlink_reload_combination {
583 enum devlink_reload_action action;
584 enum devlink_reload_limit limit;
585};
586
587static const struct devlink_reload_combination devlink_reload_invalid_combinations[] = {
588 {
589
590 .action = DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
591 .limit = DEVLINK_RELOAD_LIMIT_NO_RESET,
592 },
593};
594
595static bool
596devlink_reload_combination_is_invalid(enum devlink_reload_action action,
597 enum devlink_reload_limit limit)
598{
599 int i;
600
601 for (i = 0; i < ARRAY_SIZE(devlink_reload_invalid_combinations); i++)
602 if (devlink_reload_invalid_combinations[i].action == action &&
603 devlink_reload_invalid_combinations[i].limit == limit)
604 return true;
605 return false;
606}
607
608static bool
609devlink_reload_action_is_supported(struct devlink *devlink, enum devlink_reload_action action)
610{
611 return test_bit(action, &devlink->ops->reload_actions);
612}
613
614static bool
615devlink_reload_limit_is_supported(struct devlink *devlink, enum devlink_reload_limit limit)
616{
617 return test_bit(limit, &devlink->ops->reload_limits);
618}
619
620static int devlink_reload_stat_put(struct sk_buff *msg,
621 enum devlink_reload_limit limit, u32 value)
622{
623 struct nlattr *reload_stats_entry;
624
625 reload_stats_entry = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_STATS_ENTRY);
626 if (!reload_stats_entry)
627 return -EMSGSIZE;
628
629 if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_STATS_LIMIT, limit) ||
630 nla_put_u32(msg, DEVLINK_ATTR_RELOAD_STATS_VALUE, value))
631 goto nla_put_failure;
632 nla_nest_end(msg, reload_stats_entry);
633 return 0;
634
635nla_put_failure:
636 nla_nest_cancel(msg, reload_stats_entry);
637 return -EMSGSIZE;
638}
639
640static int devlink_reload_stats_put(struct sk_buff *msg, struct devlink *devlink, bool is_remote)
641{
642 struct nlattr *reload_stats_attr, *act_info, *act_stats;
643 int i, j, stat_idx;
644 u32 value;
645
646 if (!is_remote)
647 reload_stats_attr = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_STATS);
648 else
649 reload_stats_attr = nla_nest_start(msg, DEVLINK_ATTR_REMOTE_RELOAD_STATS);
650
651 if (!reload_stats_attr)
652 return -EMSGSIZE;
653
654 for (i = 0; i <= DEVLINK_RELOAD_ACTION_MAX; i++) {
655 if ((!is_remote &&
656 !devlink_reload_action_is_supported(devlink, i)) ||
657 i == DEVLINK_RELOAD_ACTION_UNSPEC)
658 continue;
659 act_info = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_ACTION_INFO);
660 if (!act_info)
661 goto nla_put_failure;
662
663 if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_ACTION, i))
664 goto action_info_nest_cancel;
665 act_stats = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_ACTION_STATS);
666 if (!act_stats)
667 goto action_info_nest_cancel;
668
669 for (j = 0; j <= DEVLINK_RELOAD_LIMIT_MAX; j++) {
670
671
672
673
674
675 if ((!is_remote && j != DEVLINK_RELOAD_LIMIT_UNSPEC &&
676 !devlink_reload_limit_is_supported(devlink, j)) ||
677 devlink_reload_combination_is_invalid(i, j))
678 continue;
679
680 stat_idx = j * __DEVLINK_RELOAD_ACTION_MAX + i;
681 if (!is_remote)
682 value = devlink->stats.reload_stats[stat_idx];
683 else
684 value = devlink->stats.remote_reload_stats[stat_idx];
685 if (devlink_reload_stat_put(msg, j, value))
686 goto action_stats_nest_cancel;
687 }
688 nla_nest_end(msg, act_stats);
689 nla_nest_end(msg, act_info);
690 }
691 nla_nest_end(msg, reload_stats_attr);
692 return 0;
693
694action_stats_nest_cancel:
695 nla_nest_cancel(msg, act_stats);
696action_info_nest_cancel:
697 nla_nest_cancel(msg, act_info);
698nla_put_failure:
699 nla_nest_cancel(msg, reload_stats_attr);
700 return -EMSGSIZE;
701}
702
703static int devlink_nl_fill(struct sk_buff *msg, struct devlink *devlink,
704 enum devlink_command cmd, u32 portid,
705 u32 seq, int flags)
706{
707 struct nlattr *dev_stats;
708 void *hdr;
709
710 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
711 if (!hdr)
712 return -EMSGSIZE;
713
714 if (devlink_nl_put_handle(msg, devlink))
715 goto nla_put_failure;
716 if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_FAILED, devlink->reload_failed))
717 goto nla_put_failure;
718
719 dev_stats = nla_nest_start(msg, DEVLINK_ATTR_DEV_STATS);
720 if (!dev_stats)
721 goto nla_put_failure;
722
723 if (devlink_reload_stats_put(msg, devlink, false))
724 goto dev_stats_nest_cancel;
725 if (devlink_reload_stats_put(msg, devlink, true))
726 goto dev_stats_nest_cancel;
727
728 nla_nest_end(msg, dev_stats);
729 genlmsg_end(msg, hdr);
730 return 0;
731
732dev_stats_nest_cancel:
733 nla_nest_cancel(msg, dev_stats);
734nla_put_failure:
735 genlmsg_cancel(msg, hdr);
736 return -EMSGSIZE;
737}
738
739static void devlink_notify(struct devlink *devlink, enum devlink_command cmd)
740{
741 struct sk_buff *msg;
742 int err;
743
744 WARN_ON(cmd != DEVLINK_CMD_NEW && cmd != DEVLINK_CMD_DEL);
745
746 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
747 if (!msg)
748 return;
749
750 err = devlink_nl_fill(msg, devlink, cmd, 0, 0, 0);
751 if (err) {
752 nlmsg_free(msg);
753 return;
754 }
755
756 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
757 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
758}
759
760static int devlink_nl_port_attrs_put(struct sk_buff *msg,
761 struct devlink_port *devlink_port)
762{
763 struct devlink_port_attrs *attrs = &devlink_port->attrs;
764
765 if (!devlink_port->attrs_set)
766 return 0;
767 if (attrs->lanes) {
768 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_LANES, attrs->lanes))
769 return -EMSGSIZE;
770 }
771 if (nla_put_u8(msg, DEVLINK_ATTR_PORT_SPLITTABLE, attrs->splittable))
772 return -EMSGSIZE;
773 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_FLAVOUR, attrs->flavour))
774 return -EMSGSIZE;
775 switch (devlink_port->attrs.flavour) {
776 case DEVLINK_PORT_FLAVOUR_PCI_PF:
777 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
778 attrs->pci_pf.controller) ||
779 nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_pf.pf))
780 return -EMSGSIZE;
781 if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_pf.external))
782 return -EMSGSIZE;
783 break;
784 case DEVLINK_PORT_FLAVOUR_PCI_VF:
785 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
786 attrs->pci_vf.controller) ||
787 nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_vf.pf) ||
788 nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_VF_NUMBER, attrs->pci_vf.vf))
789 return -EMSGSIZE;
790 if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_vf.external))
791 return -EMSGSIZE;
792 break;
793 case DEVLINK_PORT_FLAVOUR_PCI_SF:
794 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
795 attrs->pci_sf.controller) ||
796 nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER,
797 attrs->pci_sf.pf) ||
798 nla_put_u32(msg, DEVLINK_ATTR_PORT_PCI_SF_NUMBER,
799 attrs->pci_sf.sf))
800 return -EMSGSIZE;
801 break;
802 case DEVLINK_PORT_FLAVOUR_PHYSICAL:
803 case DEVLINK_PORT_FLAVOUR_CPU:
804 case DEVLINK_PORT_FLAVOUR_DSA:
805 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_NUMBER,
806 attrs->phys.port_number))
807 return -EMSGSIZE;
808 if (!attrs->split)
809 return 0;
810 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_GROUP,
811 attrs->phys.port_number))
812 return -EMSGSIZE;
813 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_SUBPORT_NUMBER,
814 attrs->phys.split_subport_number))
815 return -EMSGSIZE;
816 break;
817 default:
818 break;
819 }
820 return 0;
821}
822
823static int devlink_port_fn_hw_addr_fill(const struct devlink_ops *ops,
824 struct devlink_port *port,
825 struct sk_buff *msg,
826 struct netlink_ext_ack *extack,
827 bool *msg_updated)
828{
829 u8 hw_addr[MAX_ADDR_LEN];
830 int hw_addr_len;
831 int err;
832
833 if (!ops->port_function_hw_addr_get)
834 return 0;
835
836 err = ops->port_function_hw_addr_get(port, hw_addr, &hw_addr_len,
837 extack);
838 if (err) {
839 if (err == -EOPNOTSUPP)
840 return 0;
841 return err;
842 }
843 err = nla_put(msg, DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR, hw_addr_len, hw_addr);
844 if (err)
845 return err;
846 *msg_updated = true;
847 return 0;
848}
849
850static int devlink_nl_rate_fill(struct sk_buff *msg,
851 struct devlink_rate *devlink_rate,
852 enum devlink_command cmd, u32 portid, u32 seq,
853 int flags, struct netlink_ext_ack *extack)
854{
855 struct devlink *devlink = devlink_rate->devlink;
856 void *hdr;
857
858 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
859 if (!hdr)
860 return -EMSGSIZE;
861
862 if (devlink_nl_put_handle(msg, devlink))
863 goto nla_put_failure;
864
865 if (nla_put_u16(msg, DEVLINK_ATTR_RATE_TYPE, devlink_rate->type))
866 goto nla_put_failure;
867
868 if (devlink_rate_is_leaf(devlink_rate)) {
869 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
870 devlink_rate->devlink_port->index))
871 goto nla_put_failure;
872 } else if (devlink_rate_is_node(devlink_rate)) {
873 if (nla_put_string(msg, DEVLINK_ATTR_RATE_NODE_NAME,
874 devlink_rate->name))
875 goto nla_put_failure;
876 }
877
878 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_RATE_TX_SHARE,
879 devlink_rate->tx_share, DEVLINK_ATTR_PAD))
880 goto nla_put_failure;
881
882 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_RATE_TX_MAX,
883 devlink_rate->tx_max, DEVLINK_ATTR_PAD))
884 goto nla_put_failure;
885
886 if (devlink_rate->parent)
887 if (nla_put_string(msg, DEVLINK_ATTR_RATE_PARENT_NODE_NAME,
888 devlink_rate->parent->name))
889 goto nla_put_failure;
890
891 genlmsg_end(msg, hdr);
892 return 0;
893
894nla_put_failure:
895 genlmsg_cancel(msg, hdr);
896 return -EMSGSIZE;
897}
898
899static bool
900devlink_port_fn_state_valid(enum devlink_port_fn_state state)
901{
902 return state == DEVLINK_PORT_FN_STATE_INACTIVE ||
903 state == DEVLINK_PORT_FN_STATE_ACTIVE;
904}
905
906static bool
907devlink_port_fn_opstate_valid(enum devlink_port_fn_opstate opstate)
908{
909 return opstate == DEVLINK_PORT_FN_OPSTATE_DETACHED ||
910 opstate == DEVLINK_PORT_FN_OPSTATE_ATTACHED;
911}
912
913static int devlink_port_fn_state_fill(const struct devlink_ops *ops,
914 struct devlink_port *port,
915 struct sk_buff *msg,
916 struct netlink_ext_ack *extack,
917 bool *msg_updated)
918{
919 enum devlink_port_fn_opstate opstate;
920 enum devlink_port_fn_state state;
921 int err;
922
923 if (!ops->port_fn_state_get)
924 return 0;
925
926 err = ops->port_fn_state_get(port, &state, &opstate, extack);
927 if (err) {
928 if (err == -EOPNOTSUPP)
929 return 0;
930 return err;
931 }
932 if (!devlink_port_fn_state_valid(state)) {
933 WARN_ON_ONCE(1);
934 NL_SET_ERR_MSG_MOD(extack, "Invalid state read from driver");
935 return -EINVAL;
936 }
937 if (!devlink_port_fn_opstate_valid(opstate)) {
938 WARN_ON_ONCE(1);
939 NL_SET_ERR_MSG_MOD(extack,
940 "Invalid operational state read from driver");
941 return -EINVAL;
942 }
943 if (nla_put_u8(msg, DEVLINK_PORT_FN_ATTR_STATE, state) ||
944 nla_put_u8(msg, DEVLINK_PORT_FN_ATTR_OPSTATE, opstate))
945 return -EMSGSIZE;
946 *msg_updated = true;
947 return 0;
948}
949
950static int
951devlink_nl_port_function_attrs_put(struct sk_buff *msg, struct devlink_port *port,
952 struct netlink_ext_ack *extack)
953{
954 const struct devlink_ops *ops;
955 struct nlattr *function_attr;
956 bool msg_updated = false;
957 int err;
958
959 function_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PORT_FUNCTION);
960 if (!function_attr)
961 return -EMSGSIZE;
962
963 ops = port->devlink->ops;
964 err = devlink_port_fn_hw_addr_fill(ops, port, msg, extack,
965 &msg_updated);
966 if (err)
967 goto out;
968 err = devlink_port_fn_state_fill(ops, port, msg, extack, &msg_updated);
969out:
970 if (err || !msg_updated)
971 nla_nest_cancel(msg, function_attr);
972 else
973 nla_nest_end(msg, function_attr);
974 return err;
975}
976
977static int devlink_nl_port_fill(struct sk_buff *msg,
978 struct devlink_port *devlink_port,
979 enum devlink_command cmd, u32 portid, u32 seq,
980 int flags, struct netlink_ext_ack *extack)
981{
982 struct devlink *devlink = devlink_port->devlink;
983 void *hdr;
984
985 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
986 if (!hdr)
987 return -EMSGSIZE;
988
989 if (devlink_nl_put_handle(msg, devlink))
990 goto nla_put_failure;
991 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
992 goto nla_put_failure;
993
994
995 rtnl_lock();
996 spin_lock_bh(&devlink_port->type_lock);
997 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_TYPE, devlink_port->type))
998 goto nla_put_failure_type_locked;
999 if (devlink_port->desired_type != DEVLINK_PORT_TYPE_NOTSET &&
1000 nla_put_u16(msg, DEVLINK_ATTR_PORT_DESIRED_TYPE,
1001 devlink_port->desired_type))
1002 goto nla_put_failure_type_locked;
1003 if (devlink_port->type == DEVLINK_PORT_TYPE_ETH) {
1004 struct net *net = devlink_net(devlink_port->devlink);
1005 struct net_device *netdev = devlink_port->type_dev;
1006
1007 if (netdev && net_eq(net, dev_net(netdev)) &&
1008 (nla_put_u32(msg, DEVLINK_ATTR_PORT_NETDEV_IFINDEX,
1009 netdev->ifindex) ||
1010 nla_put_string(msg, DEVLINK_ATTR_PORT_NETDEV_NAME,
1011 netdev->name)))
1012 goto nla_put_failure_type_locked;
1013 }
1014 if (devlink_port->type == DEVLINK_PORT_TYPE_IB) {
1015 struct ib_device *ibdev = devlink_port->type_dev;
1016
1017 if (ibdev &&
1018 nla_put_string(msg, DEVLINK_ATTR_PORT_IBDEV_NAME,
1019 ibdev->name))
1020 goto nla_put_failure_type_locked;
1021 }
1022 spin_unlock_bh(&devlink_port->type_lock);
1023 rtnl_unlock();
1024 if (devlink_nl_port_attrs_put(msg, devlink_port))
1025 goto nla_put_failure;
1026 if (devlink_nl_port_function_attrs_put(msg, devlink_port, extack))
1027 goto nla_put_failure;
1028
1029 genlmsg_end(msg, hdr);
1030 return 0;
1031
1032nla_put_failure_type_locked:
1033 spin_unlock_bh(&devlink_port->type_lock);
1034 rtnl_unlock();
1035nla_put_failure:
1036 genlmsg_cancel(msg, hdr);
1037 return -EMSGSIZE;
1038}
1039
1040static void devlink_port_notify(struct devlink_port *devlink_port,
1041 enum devlink_command cmd)
1042{
1043 struct sk_buff *msg;
1044 int err;
1045
1046 WARN_ON(cmd != DEVLINK_CMD_PORT_NEW && cmd != DEVLINK_CMD_PORT_DEL);
1047
1048 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1049 if (!msg)
1050 return;
1051
1052 err = devlink_nl_port_fill(msg, devlink_port, cmd, 0, 0, 0, NULL);
1053 if (err) {
1054 nlmsg_free(msg);
1055 return;
1056 }
1057
1058 genlmsg_multicast_netns(&devlink_nl_family,
1059 devlink_net(devlink_port->devlink), msg, 0,
1060 DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
1061}
1062
1063static void devlink_rate_notify(struct devlink_rate *devlink_rate,
1064 enum devlink_command cmd)
1065{
1066 struct sk_buff *msg;
1067 int err;
1068
1069 WARN_ON(cmd != DEVLINK_CMD_RATE_NEW && cmd != DEVLINK_CMD_RATE_DEL);
1070
1071 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1072 if (!msg)
1073 return;
1074
1075 err = devlink_nl_rate_fill(msg, devlink_rate, cmd, 0, 0, 0, NULL);
1076 if (err) {
1077 nlmsg_free(msg);
1078 return;
1079 }
1080
1081 genlmsg_multicast_netns(&devlink_nl_family,
1082 devlink_net(devlink_rate->devlink), msg, 0,
1083 DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
1084}
1085
1086static int devlink_nl_cmd_rate_get_dumpit(struct sk_buff *msg,
1087 struct netlink_callback *cb)
1088{
1089 struct devlink_rate *devlink_rate;
1090 struct devlink *devlink;
1091 int start = cb->args[0];
1092 unsigned long index;
1093 int idx = 0;
1094 int err = 0;
1095
1096 mutex_lock(&devlink_mutex);
1097 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
1098 if (!devlink_try_get(devlink))
1099 continue;
1100
1101 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
1102 goto retry;
1103
1104 mutex_lock(&devlink->lock);
1105 list_for_each_entry(devlink_rate, &devlink->rate_list, list) {
1106 enum devlink_command cmd = DEVLINK_CMD_RATE_NEW;
1107 u32 id = NETLINK_CB(cb->skb).portid;
1108
1109 if (idx < start) {
1110 idx++;
1111 continue;
1112 }
1113 err = devlink_nl_rate_fill(msg, devlink_rate, cmd, id,
1114 cb->nlh->nlmsg_seq,
1115 NLM_F_MULTI, NULL);
1116 if (err) {
1117 mutex_unlock(&devlink->lock);
1118 devlink_put(devlink);
1119 goto out;
1120 }
1121 idx++;
1122 }
1123 mutex_unlock(&devlink->lock);
1124retry:
1125 devlink_put(devlink);
1126 }
1127out:
1128 mutex_unlock(&devlink_mutex);
1129 if (err != -EMSGSIZE)
1130 return err;
1131
1132 cb->args[0] = idx;
1133 return msg->len;
1134}
1135
1136static int devlink_nl_cmd_rate_get_doit(struct sk_buff *skb,
1137 struct genl_info *info)
1138{
1139 struct devlink_rate *devlink_rate = info->user_ptr[1];
1140 struct sk_buff *msg;
1141 int err;
1142
1143 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1144 if (!msg)
1145 return -ENOMEM;
1146
1147 err = devlink_nl_rate_fill(msg, devlink_rate, DEVLINK_CMD_RATE_NEW,
1148 info->snd_portid, info->snd_seq, 0,
1149 info->extack);
1150 if (err) {
1151 nlmsg_free(msg);
1152 return err;
1153 }
1154
1155 return genlmsg_reply(msg, info);
1156}
1157
1158static bool
1159devlink_rate_is_parent_node(struct devlink_rate *devlink_rate,
1160 struct devlink_rate *parent)
1161{
1162 while (parent) {
1163 if (parent == devlink_rate)
1164 return true;
1165 parent = parent->parent;
1166 }
1167 return false;
1168}
1169
1170static int devlink_nl_cmd_get_doit(struct sk_buff *skb, struct genl_info *info)
1171{
1172 struct devlink *devlink = info->user_ptr[0];
1173 struct sk_buff *msg;
1174 int err;
1175
1176 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1177 if (!msg)
1178 return -ENOMEM;
1179
1180 err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
1181 info->snd_portid, info->snd_seq, 0);
1182 if (err) {
1183 nlmsg_free(msg);
1184 return err;
1185 }
1186
1187 return genlmsg_reply(msg, info);
1188}
1189
1190static int devlink_nl_cmd_get_dumpit(struct sk_buff *msg,
1191 struct netlink_callback *cb)
1192{
1193 struct devlink *devlink;
1194 int start = cb->args[0];
1195 unsigned long index;
1196 int idx = 0;
1197 int err;
1198
1199 mutex_lock(&devlink_mutex);
1200 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
1201 if (!devlink_try_get(devlink))
1202 continue;
1203
1204 if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) {
1205 devlink_put(devlink);
1206 continue;
1207 }
1208
1209 if (idx < start) {
1210 idx++;
1211 devlink_put(devlink);
1212 continue;
1213 }
1214
1215 err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
1216 NETLINK_CB(cb->skb).portid,
1217 cb->nlh->nlmsg_seq, NLM_F_MULTI);
1218 devlink_put(devlink);
1219 if (err)
1220 goto out;
1221 idx++;
1222 }
1223out:
1224 mutex_unlock(&devlink_mutex);
1225
1226 cb->args[0] = idx;
1227 return msg->len;
1228}
1229
1230static int devlink_nl_cmd_port_get_doit(struct sk_buff *skb,
1231 struct genl_info *info)
1232{
1233 struct devlink_port *devlink_port = info->user_ptr[1];
1234 struct sk_buff *msg;
1235 int err;
1236
1237 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1238 if (!msg)
1239 return -ENOMEM;
1240
1241 err = devlink_nl_port_fill(msg, devlink_port, DEVLINK_CMD_PORT_NEW,
1242 info->snd_portid, info->snd_seq, 0,
1243 info->extack);
1244 if (err) {
1245 nlmsg_free(msg);
1246 return err;
1247 }
1248
1249 return genlmsg_reply(msg, info);
1250}
1251
1252static int devlink_nl_cmd_port_get_dumpit(struct sk_buff *msg,
1253 struct netlink_callback *cb)
1254{
1255 struct devlink *devlink;
1256 struct devlink_port *devlink_port;
1257 int start = cb->args[0];
1258 unsigned long index;
1259 int idx = 0;
1260 int err;
1261
1262 mutex_lock(&devlink_mutex);
1263 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
1264 if (!devlink_try_get(devlink))
1265 continue;
1266
1267 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
1268 goto retry;
1269
1270 mutex_lock(&devlink->lock);
1271 list_for_each_entry(devlink_port, &devlink->port_list, list) {
1272 if (idx < start) {
1273 idx++;
1274 continue;
1275 }
1276 err = devlink_nl_port_fill(msg, devlink_port,
1277 DEVLINK_CMD_NEW,
1278 NETLINK_CB(cb->skb).portid,
1279 cb->nlh->nlmsg_seq,
1280 NLM_F_MULTI, cb->extack);
1281 if (err) {
1282 mutex_unlock(&devlink->lock);
1283 devlink_put(devlink);
1284 goto out;
1285 }
1286 idx++;
1287 }
1288 mutex_unlock(&devlink->lock);
1289retry:
1290 devlink_put(devlink);
1291 }
1292out:
1293 mutex_unlock(&devlink_mutex);
1294
1295 cb->args[0] = idx;
1296 return msg->len;
1297}
1298
1299static int devlink_port_type_set(struct devlink_port *devlink_port,
1300 enum devlink_port_type port_type)
1301
1302{
1303 int err;
1304
1305 if (!devlink_port->devlink->ops->port_type_set)
1306 return -EOPNOTSUPP;
1307
1308 if (port_type == devlink_port->type)
1309 return 0;
1310
1311 err = devlink_port->devlink->ops->port_type_set(devlink_port,
1312 port_type);
1313 if (err)
1314 return err;
1315
1316 devlink_port->desired_type = port_type;
1317 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
1318 return 0;
1319}
1320
1321static int devlink_port_function_hw_addr_set(struct devlink_port *port,
1322 const struct nlattr *attr,
1323 struct netlink_ext_ack *extack)
1324{
1325 const struct devlink_ops *ops = port->devlink->ops;
1326 const u8 *hw_addr;
1327 int hw_addr_len;
1328
1329 hw_addr = nla_data(attr);
1330 hw_addr_len = nla_len(attr);
1331 if (hw_addr_len > MAX_ADDR_LEN) {
1332 NL_SET_ERR_MSG_MOD(extack, "Port function hardware address too long");
1333 return -EINVAL;
1334 }
1335 if (port->type == DEVLINK_PORT_TYPE_ETH) {
1336 if (hw_addr_len != ETH_ALEN) {
1337 NL_SET_ERR_MSG_MOD(extack, "Address must be 6 bytes for Ethernet device");
1338 return -EINVAL;
1339 }
1340 if (!is_unicast_ether_addr(hw_addr)) {
1341 NL_SET_ERR_MSG_MOD(extack, "Non-unicast hardware address unsupported");
1342 return -EINVAL;
1343 }
1344 }
1345
1346 if (!ops->port_function_hw_addr_set) {
1347 NL_SET_ERR_MSG_MOD(extack, "Port doesn't support function attributes");
1348 return -EOPNOTSUPP;
1349 }
1350
1351 return ops->port_function_hw_addr_set(port, hw_addr, hw_addr_len,
1352 extack);
1353}
1354
1355static int devlink_port_fn_state_set(struct devlink_port *port,
1356 const struct nlattr *attr,
1357 struct netlink_ext_ack *extack)
1358{
1359 enum devlink_port_fn_state state;
1360 const struct devlink_ops *ops;
1361
1362 state = nla_get_u8(attr);
1363 ops = port->devlink->ops;
1364 if (!ops->port_fn_state_set) {
1365 NL_SET_ERR_MSG_MOD(extack,
1366 "Function does not support state setting");
1367 return -EOPNOTSUPP;
1368 }
1369 return ops->port_fn_state_set(port, state, extack);
1370}
1371
1372static int devlink_port_function_set(struct devlink_port *port,
1373 const struct nlattr *attr,
1374 struct netlink_ext_ack *extack)
1375{
1376 struct nlattr *tb[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1];
1377 int err;
1378
1379 err = nla_parse_nested(tb, DEVLINK_PORT_FUNCTION_ATTR_MAX, attr,
1380 devlink_function_nl_policy, extack);
1381 if (err < 0) {
1382 NL_SET_ERR_MSG_MOD(extack, "Fail to parse port function attributes");
1383 return err;
1384 }
1385
1386 attr = tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR];
1387 if (attr) {
1388 err = devlink_port_function_hw_addr_set(port, attr, extack);
1389 if (err)
1390 return err;
1391 }
1392
1393
1394
1395
1396 attr = tb[DEVLINK_PORT_FN_ATTR_STATE];
1397 if (attr)
1398 err = devlink_port_fn_state_set(port, attr, extack);
1399
1400 if (!err)
1401 devlink_port_notify(port, DEVLINK_CMD_PORT_NEW);
1402 return err;
1403}
1404
1405static int devlink_nl_cmd_port_set_doit(struct sk_buff *skb,
1406 struct genl_info *info)
1407{
1408 struct devlink_port *devlink_port = info->user_ptr[1];
1409 int err;
1410
1411 if (info->attrs[DEVLINK_ATTR_PORT_TYPE]) {
1412 enum devlink_port_type port_type;
1413
1414 port_type = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_TYPE]);
1415 err = devlink_port_type_set(devlink_port, port_type);
1416 if (err)
1417 return err;
1418 }
1419
1420 if (info->attrs[DEVLINK_ATTR_PORT_FUNCTION]) {
1421 struct nlattr *attr = info->attrs[DEVLINK_ATTR_PORT_FUNCTION];
1422 struct netlink_ext_ack *extack = info->extack;
1423
1424 err = devlink_port_function_set(devlink_port, attr, extack);
1425 if (err)
1426 return err;
1427 }
1428
1429 return 0;
1430}
1431
1432static int devlink_port_split(struct devlink *devlink, u32 port_index,
1433 u32 count, struct netlink_ext_ack *extack)
1434
1435{
1436 if (devlink->ops->port_split)
1437 return devlink->ops->port_split(devlink, port_index, count,
1438 extack);
1439 return -EOPNOTSUPP;
1440}
1441
1442static int devlink_nl_cmd_port_split_doit(struct sk_buff *skb,
1443 struct genl_info *info)
1444{
1445 struct devlink *devlink = info->user_ptr[0];
1446 struct devlink_port *devlink_port;
1447 u32 port_index;
1448 u32 count;
1449
1450 if (!info->attrs[DEVLINK_ATTR_PORT_INDEX] ||
1451 !info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT])
1452 return -EINVAL;
1453
1454 devlink_port = devlink_port_get_from_info(devlink, info);
1455 port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
1456 count = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT]);
1457
1458 if (IS_ERR(devlink_port))
1459 return -EINVAL;
1460
1461 if (!devlink_port->attrs.splittable) {
1462
1463 if (devlink_port->attrs.split)
1464 NL_SET_ERR_MSG_MOD(info->extack, "Port cannot be split further");
1465 else
1466 NL_SET_ERR_MSG_MOD(info->extack, "Port cannot be split");
1467 return -EINVAL;
1468 }
1469
1470 if (count < 2 || !is_power_of_2(count) || count > devlink_port->attrs.lanes) {
1471 NL_SET_ERR_MSG_MOD(info->extack, "Invalid split count");
1472 return -EINVAL;
1473 }
1474
1475 return devlink_port_split(devlink, port_index, count, info->extack);
1476}
1477
1478static int devlink_port_unsplit(struct devlink *devlink, u32 port_index,
1479 struct netlink_ext_ack *extack)
1480
1481{
1482 if (devlink->ops->port_unsplit)
1483 return devlink->ops->port_unsplit(devlink, port_index, extack);
1484 return -EOPNOTSUPP;
1485}
1486
1487static int devlink_nl_cmd_port_unsplit_doit(struct sk_buff *skb,
1488 struct genl_info *info)
1489{
1490 struct devlink *devlink = info->user_ptr[0];
1491 u32 port_index;
1492
1493 if (!info->attrs[DEVLINK_ATTR_PORT_INDEX])
1494 return -EINVAL;
1495
1496 port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
1497 return devlink_port_unsplit(devlink, port_index, info->extack);
1498}
1499
1500static int devlink_port_new_notifiy(struct devlink *devlink,
1501 unsigned int port_index,
1502 struct genl_info *info)
1503{
1504 struct devlink_port *devlink_port;
1505 struct sk_buff *msg;
1506 int err;
1507
1508 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1509 if (!msg)
1510 return -ENOMEM;
1511
1512 mutex_lock(&devlink->lock);
1513 devlink_port = devlink_port_get_by_index(devlink, port_index);
1514 if (!devlink_port) {
1515 err = -ENODEV;
1516 goto out;
1517 }
1518
1519 err = devlink_nl_port_fill(msg, devlink_port, DEVLINK_CMD_NEW,
1520 info->snd_portid, info->snd_seq, 0, NULL);
1521 if (err)
1522 goto out;
1523
1524 err = genlmsg_reply(msg, info);
1525 mutex_unlock(&devlink->lock);
1526 return err;
1527
1528out:
1529 mutex_unlock(&devlink->lock);
1530 nlmsg_free(msg);
1531 return err;
1532}
1533
1534static int devlink_nl_cmd_port_new_doit(struct sk_buff *skb,
1535 struct genl_info *info)
1536{
1537 struct netlink_ext_ack *extack = info->extack;
1538 struct devlink_port_new_attrs new_attrs = {};
1539 struct devlink *devlink = info->user_ptr[0];
1540 unsigned int new_port_index;
1541 int err;
1542
1543 if (!devlink->ops->port_new || !devlink->ops->port_del)
1544 return -EOPNOTSUPP;
1545
1546 if (!info->attrs[DEVLINK_ATTR_PORT_FLAVOUR] ||
1547 !info->attrs[DEVLINK_ATTR_PORT_PCI_PF_NUMBER]) {
1548 NL_SET_ERR_MSG_MOD(extack, "Port flavour or PCI PF are not specified");
1549 return -EINVAL;
1550 }
1551 new_attrs.flavour = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_FLAVOUR]);
1552 new_attrs.pfnum =
1553 nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_PCI_PF_NUMBER]);
1554
1555 if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
1556
1557 new_attrs.port_index =
1558 nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
1559 new_attrs.port_index_valid = true;
1560 }
1561 if (info->attrs[DEVLINK_ATTR_PORT_CONTROLLER_NUMBER]) {
1562 new_attrs.controller =
1563 nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_CONTROLLER_NUMBER]);
1564 new_attrs.controller_valid = true;
1565 }
1566 if (new_attrs.flavour == DEVLINK_PORT_FLAVOUR_PCI_SF &&
1567 info->attrs[DEVLINK_ATTR_PORT_PCI_SF_NUMBER]) {
1568 new_attrs.sfnum = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_PCI_SF_NUMBER]);
1569 new_attrs.sfnum_valid = true;
1570 }
1571
1572 err = devlink->ops->port_new(devlink, &new_attrs, extack,
1573 &new_port_index);
1574 if (err)
1575 return err;
1576
1577 err = devlink_port_new_notifiy(devlink, new_port_index, info);
1578 if (err && err != -ENODEV) {
1579
1580 devlink->ops->port_del(devlink, new_port_index, extack);
1581 }
1582 return err;
1583}
1584
1585static int devlink_nl_cmd_port_del_doit(struct sk_buff *skb,
1586 struct genl_info *info)
1587{
1588 struct netlink_ext_ack *extack = info->extack;
1589 struct devlink *devlink = info->user_ptr[0];
1590 unsigned int port_index;
1591
1592 if (!devlink->ops->port_del)
1593 return -EOPNOTSUPP;
1594
1595 if (!info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
1596 NL_SET_ERR_MSG_MOD(extack, "Port index is not specified");
1597 return -EINVAL;
1598 }
1599 port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
1600
1601 return devlink->ops->port_del(devlink, port_index, extack);
1602}
1603
1604static int
1605devlink_nl_rate_parent_node_set(struct devlink_rate *devlink_rate,
1606 struct genl_info *info,
1607 struct nlattr *nla_parent)
1608{
1609 struct devlink *devlink = devlink_rate->devlink;
1610 const char *parent_name = nla_data(nla_parent);
1611 const struct devlink_ops *ops = devlink->ops;
1612 size_t len = strlen(parent_name);
1613 struct devlink_rate *parent;
1614 int err = -EOPNOTSUPP;
1615
1616 parent = devlink_rate->parent;
1617 if (parent && len) {
1618 NL_SET_ERR_MSG_MOD(info->extack, "Rate object already has parent.");
1619 return -EBUSY;
1620 } else if (parent && !len) {
1621 if (devlink_rate_is_leaf(devlink_rate))
1622 err = ops->rate_leaf_parent_set(devlink_rate, NULL,
1623 devlink_rate->priv, NULL,
1624 info->extack);
1625 else if (devlink_rate_is_node(devlink_rate))
1626 err = ops->rate_node_parent_set(devlink_rate, NULL,
1627 devlink_rate->priv, NULL,
1628 info->extack);
1629 if (err)
1630 return err;
1631
1632 refcount_dec(&parent->refcnt);
1633 devlink_rate->parent = NULL;
1634 } else if (!parent && len) {
1635 parent = devlink_rate_node_get_by_name(devlink, parent_name);
1636 if (IS_ERR(parent))
1637 return -ENODEV;
1638
1639 if (parent == devlink_rate) {
1640 NL_SET_ERR_MSG_MOD(info->extack, "Parent to self is not allowed");
1641 return -EINVAL;
1642 }
1643
1644 if (devlink_rate_is_node(devlink_rate) &&
1645 devlink_rate_is_parent_node(devlink_rate, parent->parent)) {
1646 NL_SET_ERR_MSG_MOD(info->extack, "Node is already a parent of parent node.");
1647 return -EEXIST;
1648 }
1649
1650 if (devlink_rate_is_leaf(devlink_rate))
1651 err = ops->rate_leaf_parent_set(devlink_rate, parent,
1652 devlink_rate->priv, parent->priv,
1653 info->extack);
1654 else if (devlink_rate_is_node(devlink_rate))
1655 err = ops->rate_node_parent_set(devlink_rate, parent,
1656 devlink_rate->priv, parent->priv,
1657 info->extack);
1658 if (err)
1659 return err;
1660
1661 refcount_inc(&parent->refcnt);
1662 devlink_rate->parent = parent;
1663 }
1664
1665 return 0;
1666}
1667
1668static int devlink_nl_rate_set(struct devlink_rate *devlink_rate,
1669 const struct devlink_ops *ops,
1670 struct genl_info *info)
1671{
1672 struct nlattr *nla_parent, **attrs = info->attrs;
1673 int err = -EOPNOTSUPP;
1674 u64 rate;
1675
1676 if (attrs[DEVLINK_ATTR_RATE_TX_SHARE]) {
1677 rate = nla_get_u64(attrs[DEVLINK_ATTR_RATE_TX_SHARE]);
1678 if (devlink_rate_is_leaf(devlink_rate))
1679 err = ops->rate_leaf_tx_share_set(devlink_rate, devlink_rate->priv,
1680 rate, info->extack);
1681 else if (devlink_rate_is_node(devlink_rate))
1682 err = ops->rate_node_tx_share_set(devlink_rate, devlink_rate->priv,
1683 rate, info->extack);
1684 if (err)
1685 return err;
1686 devlink_rate->tx_share = rate;
1687 }
1688
1689 if (attrs[DEVLINK_ATTR_RATE_TX_MAX]) {
1690 rate = nla_get_u64(attrs[DEVLINK_ATTR_RATE_TX_MAX]);
1691 if (devlink_rate_is_leaf(devlink_rate))
1692 err = ops->rate_leaf_tx_max_set(devlink_rate, devlink_rate->priv,
1693 rate, info->extack);
1694 else if (devlink_rate_is_node(devlink_rate))
1695 err = ops->rate_node_tx_max_set(devlink_rate, devlink_rate->priv,
1696 rate, info->extack);
1697 if (err)
1698 return err;
1699 devlink_rate->tx_max = rate;
1700 }
1701
1702 nla_parent = attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME];
1703 if (nla_parent) {
1704 err = devlink_nl_rate_parent_node_set(devlink_rate, info,
1705 nla_parent);
1706 if (err)
1707 return err;
1708 }
1709
1710 return 0;
1711}
1712
1713static bool devlink_rate_set_ops_supported(const struct devlink_ops *ops,
1714 struct genl_info *info,
1715 enum devlink_rate_type type)
1716{
1717 struct nlattr **attrs = info->attrs;
1718
1719 if (type == DEVLINK_RATE_TYPE_LEAF) {
1720 if (attrs[DEVLINK_ATTR_RATE_TX_SHARE] && !ops->rate_leaf_tx_share_set) {
1721 NL_SET_ERR_MSG_MOD(info->extack, "TX share set isn't supported for the leafs");
1722 return false;
1723 }
1724 if (attrs[DEVLINK_ATTR_RATE_TX_MAX] && !ops->rate_leaf_tx_max_set) {
1725 NL_SET_ERR_MSG_MOD(info->extack, "TX max set isn't supported for the leafs");
1726 return false;
1727 }
1728 if (attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME] &&
1729 !ops->rate_leaf_parent_set) {
1730 NL_SET_ERR_MSG_MOD(info->extack, "Parent set isn't supported for the leafs");
1731 return false;
1732 }
1733 } else if (type == DEVLINK_RATE_TYPE_NODE) {
1734 if (attrs[DEVLINK_ATTR_RATE_TX_SHARE] && !ops->rate_node_tx_share_set) {
1735 NL_SET_ERR_MSG_MOD(info->extack, "TX share set isn't supported for the nodes");
1736 return false;
1737 }
1738 if (attrs[DEVLINK_ATTR_RATE_TX_MAX] && !ops->rate_node_tx_max_set) {
1739 NL_SET_ERR_MSG_MOD(info->extack, "TX max set isn't supported for the nodes");
1740 return false;
1741 }
1742 if (attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME] &&
1743 !ops->rate_node_parent_set) {
1744 NL_SET_ERR_MSG_MOD(info->extack, "Parent set isn't supported for the nodes");
1745 return false;
1746 }
1747 } else {
1748 WARN(1, "Unknown type of rate object");
1749 return false;
1750 }
1751
1752 return true;
1753}
1754
1755static int devlink_nl_cmd_rate_set_doit(struct sk_buff *skb,
1756 struct genl_info *info)
1757{
1758 struct devlink_rate *devlink_rate = info->user_ptr[1];
1759 struct devlink *devlink = devlink_rate->devlink;
1760 const struct devlink_ops *ops = devlink->ops;
1761 int err;
1762
1763 if (!ops || !devlink_rate_set_ops_supported(ops, info, devlink_rate->type))
1764 return -EOPNOTSUPP;
1765
1766 err = devlink_nl_rate_set(devlink_rate, ops, info);
1767
1768 if (!err)
1769 devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_NEW);
1770 return err;
1771}
1772
1773static int devlink_nl_cmd_rate_new_doit(struct sk_buff *skb,
1774 struct genl_info *info)
1775{
1776 struct devlink *devlink = info->user_ptr[0];
1777 struct devlink_rate *rate_node;
1778 const struct devlink_ops *ops;
1779 int err;
1780
1781 ops = devlink->ops;
1782 if (!ops || !ops->rate_node_new || !ops->rate_node_del) {
1783 NL_SET_ERR_MSG_MOD(info->extack, "Rate nodes aren't supported");
1784 return -EOPNOTSUPP;
1785 }
1786
1787 if (!devlink_rate_set_ops_supported(ops, info, DEVLINK_RATE_TYPE_NODE))
1788 return -EOPNOTSUPP;
1789
1790 rate_node = devlink_rate_node_get_from_attrs(devlink, info->attrs);
1791 if (!IS_ERR(rate_node))
1792 return -EEXIST;
1793 else if (rate_node == ERR_PTR(-EINVAL))
1794 return -EINVAL;
1795
1796 rate_node = kzalloc(sizeof(*rate_node), GFP_KERNEL);
1797 if (!rate_node)
1798 return -ENOMEM;
1799
1800 rate_node->devlink = devlink;
1801 rate_node->type = DEVLINK_RATE_TYPE_NODE;
1802 rate_node->name = nla_strdup(info->attrs[DEVLINK_ATTR_RATE_NODE_NAME], GFP_KERNEL);
1803 if (!rate_node->name) {
1804 err = -ENOMEM;
1805 goto err_strdup;
1806 }
1807
1808 err = ops->rate_node_new(rate_node, &rate_node->priv, info->extack);
1809 if (err)
1810 goto err_node_new;
1811
1812 err = devlink_nl_rate_set(rate_node, ops, info);
1813 if (err)
1814 goto err_rate_set;
1815
1816 refcount_set(&rate_node->refcnt, 1);
1817 list_add(&rate_node->list, &devlink->rate_list);
1818 devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_NEW);
1819 return 0;
1820
1821err_rate_set:
1822 ops->rate_node_del(rate_node, rate_node->priv, info->extack);
1823err_node_new:
1824 kfree(rate_node->name);
1825err_strdup:
1826 kfree(rate_node);
1827 return err;
1828}
1829
1830static int devlink_nl_cmd_rate_del_doit(struct sk_buff *skb,
1831 struct genl_info *info)
1832{
1833 struct devlink_rate *rate_node = info->user_ptr[1];
1834 struct devlink *devlink = rate_node->devlink;
1835 const struct devlink_ops *ops = devlink->ops;
1836 int err;
1837
1838 if (refcount_read(&rate_node->refcnt) > 1) {
1839 NL_SET_ERR_MSG_MOD(info->extack, "Node has children. Cannot delete node.");
1840 return -EBUSY;
1841 }
1842
1843 devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_DEL);
1844 err = ops->rate_node_del(rate_node, rate_node->priv, info->extack);
1845 if (rate_node->parent)
1846 refcount_dec(&rate_node->parent->refcnt);
1847 list_del(&rate_node->list);
1848 kfree(rate_node->name);
1849 kfree(rate_node);
1850 return err;
1851}
1852
1853static int devlink_nl_sb_fill(struct sk_buff *msg, struct devlink *devlink,
1854 struct devlink_sb *devlink_sb,
1855 enum devlink_command cmd, u32 portid,
1856 u32 seq, int flags)
1857{
1858 void *hdr;
1859
1860 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1861 if (!hdr)
1862 return -EMSGSIZE;
1863
1864 if (devlink_nl_put_handle(msg, devlink))
1865 goto nla_put_failure;
1866 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
1867 goto nla_put_failure;
1868 if (nla_put_u32(msg, DEVLINK_ATTR_SB_SIZE, devlink_sb->size))
1869 goto nla_put_failure;
1870 if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_POOL_COUNT,
1871 devlink_sb->ingress_pools_count))
1872 goto nla_put_failure;
1873 if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_POOL_COUNT,
1874 devlink_sb->egress_pools_count))
1875 goto nla_put_failure;
1876 if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_TC_COUNT,
1877 devlink_sb->ingress_tc_count))
1878 goto nla_put_failure;
1879 if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_TC_COUNT,
1880 devlink_sb->egress_tc_count))
1881 goto nla_put_failure;
1882
1883 genlmsg_end(msg, hdr);
1884 return 0;
1885
1886nla_put_failure:
1887 genlmsg_cancel(msg, hdr);
1888 return -EMSGSIZE;
1889}
1890
1891static int devlink_nl_cmd_sb_get_doit(struct sk_buff *skb,
1892 struct genl_info *info)
1893{
1894 struct devlink *devlink = info->user_ptr[0];
1895 struct devlink_sb *devlink_sb;
1896 struct sk_buff *msg;
1897 int err;
1898
1899 devlink_sb = devlink_sb_get_from_info(devlink, info);
1900 if (IS_ERR(devlink_sb))
1901 return PTR_ERR(devlink_sb);
1902
1903 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1904 if (!msg)
1905 return -ENOMEM;
1906
1907 err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
1908 DEVLINK_CMD_SB_NEW,
1909 info->snd_portid, info->snd_seq, 0);
1910 if (err) {
1911 nlmsg_free(msg);
1912 return err;
1913 }
1914
1915 return genlmsg_reply(msg, info);
1916}
1917
1918static int devlink_nl_cmd_sb_get_dumpit(struct sk_buff *msg,
1919 struct netlink_callback *cb)
1920{
1921 struct devlink *devlink;
1922 struct devlink_sb *devlink_sb;
1923 int start = cb->args[0];
1924 unsigned long index;
1925 int idx = 0;
1926 int err;
1927
1928 mutex_lock(&devlink_mutex);
1929 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
1930 if (!devlink_try_get(devlink))
1931 continue;
1932
1933 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
1934 goto retry;
1935
1936 mutex_lock(&devlink->lock);
1937 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
1938 if (idx < start) {
1939 idx++;
1940 continue;
1941 }
1942 err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
1943 DEVLINK_CMD_SB_NEW,
1944 NETLINK_CB(cb->skb).portid,
1945 cb->nlh->nlmsg_seq,
1946 NLM_F_MULTI);
1947 if (err) {
1948 mutex_unlock(&devlink->lock);
1949 devlink_put(devlink);
1950 goto out;
1951 }
1952 idx++;
1953 }
1954 mutex_unlock(&devlink->lock);
1955retry:
1956 devlink_put(devlink);
1957 }
1958out:
1959 mutex_unlock(&devlink_mutex);
1960
1961 cb->args[0] = idx;
1962 return msg->len;
1963}
1964
1965static int devlink_nl_sb_pool_fill(struct sk_buff *msg, struct devlink *devlink,
1966 struct devlink_sb *devlink_sb,
1967 u16 pool_index, enum devlink_command cmd,
1968 u32 portid, u32 seq, int flags)
1969{
1970 struct devlink_sb_pool_info pool_info;
1971 void *hdr;
1972 int err;
1973
1974 err = devlink->ops->sb_pool_get(devlink, devlink_sb->index,
1975 pool_index, &pool_info);
1976 if (err)
1977 return err;
1978
1979 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1980 if (!hdr)
1981 return -EMSGSIZE;
1982
1983 if (devlink_nl_put_handle(msg, devlink))
1984 goto nla_put_failure;
1985 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
1986 goto nla_put_failure;
1987 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
1988 goto nla_put_failure;
1989 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_info.pool_type))
1990 goto nla_put_failure;
1991 if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_SIZE, pool_info.size))
1992 goto nla_put_failure;
1993 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE,
1994 pool_info.threshold_type))
1995 goto nla_put_failure;
1996 if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_CELL_SIZE,
1997 pool_info.cell_size))
1998 goto nla_put_failure;
1999
2000 genlmsg_end(msg, hdr);
2001 return 0;
2002
2003nla_put_failure:
2004 genlmsg_cancel(msg, hdr);
2005 return -EMSGSIZE;
2006}
2007
2008static int devlink_nl_cmd_sb_pool_get_doit(struct sk_buff *skb,
2009 struct genl_info *info)
2010{
2011 struct devlink *devlink = info->user_ptr[0];
2012 struct devlink_sb *devlink_sb;
2013 struct sk_buff *msg;
2014 u16 pool_index;
2015 int err;
2016
2017 devlink_sb = devlink_sb_get_from_info(devlink, info);
2018 if (IS_ERR(devlink_sb))
2019 return PTR_ERR(devlink_sb);
2020
2021 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
2022 &pool_index);
2023 if (err)
2024 return err;
2025
2026 if (!devlink->ops->sb_pool_get)
2027 return -EOPNOTSUPP;
2028
2029 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2030 if (!msg)
2031 return -ENOMEM;
2032
2033 err = devlink_nl_sb_pool_fill(msg, devlink, devlink_sb, pool_index,
2034 DEVLINK_CMD_SB_POOL_NEW,
2035 info->snd_portid, info->snd_seq, 0);
2036 if (err) {
2037 nlmsg_free(msg);
2038 return err;
2039 }
2040
2041 return genlmsg_reply(msg, info);
2042}
2043
2044static int __sb_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
2045 struct devlink *devlink,
2046 struct devlink_sb *devlink_sb,
2047 u32 portid, u32 seq)
2048{
2049 u16 pool_count = devlink_sb_pool_count(devlink_sb);
2050 u16 pool_index;
2051 int err;
2052
2053 for (pool_index = 0; pool_index < pool_count; pool_index++) {
2054 if (*p_idx < start) {
2055 (*p_idx)++;
2056 continue;
2057 }
2058 err = devlink_nl_sb_pool_fill(msg, devlink,
2059 devlink_sb,
2060 pool_index,
2061 DEVLINK_CMD_SB_POOL_NEW,
2062 portid, seq, NLM_F_MULTI);
2063 if (err)
2064 return err;
2065 (*p_idx)++;
2066 }
2067 return 0;
2068}
2069
2070static int devlink_nl_cmd_sb_pool_get_dumpit(struct sk_buff *msg,
2071 struct netlink_callback *cb)
2072{
2073 struct devlink *devlink;
2074 struct devlink_sb *devlink_sb;
2075 int start = cb->args[0];
2076 unsigned long index;
2077 int idx = 0;
2078 int err = 0;
2079
2080 mutex_lock(&devlink_mutex);
2081 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
2082 if (!devlink_try_get(devlink))
2083 continue;
2084
2085 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
2086 !devlink->ops->sb_pool_get)
2087 goto retry;
2088
2089 mutex_lock(&devlink->lock);
2090 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
2091 err = __sb_pool_get_dumpit(msg, start, &idx, devlink,
2092 devlink_sb,
2093 NETLINK_CB(cb->skb).portid,
2094 cb->nlh->nlmsg_seq);
2095 if (err == -EOPNOTSUPP) {
2096 err = 0;
2097 } else if (err) {
2098 mutex_unlock(&devlink->lock);
2099 devlink_put(devlink);
2100 goto out;
2101 }
2102 }
2103 mutex_unlock(&devlink->lock);
2104retry:
2105 devlink_put(devlink);
2106 }
2107out:
2108 mutex_unlock(&devlink_mutex);
2109
2110 if (err != -EMSGSIZE)
2111 return err;
2112
2113 cb->args[0] = idx;
2114 return msg->len;
2115}
2116
2117static int devlink_sb_pool_set(struct devlink *devlink, unsigned int sb_index,
2118 u16 pool_index, u32 size,
2119 enum devlink_sb_threshold_type threshold_type,
2120 struct netlink_ext_ack *extack)
2121
2122{
2123 const struct devlink_ops *ops = devlink->ops;
2124
2125 if (ops->sb_pool_set)
2126 return ops->sb_pool_set(devlink, sb_index, pool_index,
2127 size, threshold_type, extack);
2128 return -EOPNOTSUPP;
2129}
2130
2131static int devlink_nl_cmd_sb_pool_set_doit(struct sk_buff *skb,
2132 struct genl_info *info)
2133{
2134 struct devlink *devlink = info->user_ptr[0];
2135 enum devlink_sb_threshold_type threshold_type;
2136 struct devlink_sb *devlink_sb;
2137 u16 pool_index;
2138 u32 size;
2139 int err;
2140
2141 devlink_sb = devlink_sb_get_from_info(devlink, info);
2142 if (IS_ERR(devlink_sb))
2143 return PTR_ERR(devlink_sb);
2144
2145 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
2146 &pool_index);
2147 if (err)
2148 return err;
2149
2150 err = devlink_sb_th_type_get_from_info(info, &threshold_type);
2151 if (err)
2152 return err;
2153
2154 if (!info->attrs[DEVLINK_ATTR_SB_POOL_SIZE])
2155 return -EINVAL;
2156
2157 size = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_POOL_SIZE]);
2158 return devlink_sb_pool_set(devlink, devlink_sb->index,
2159 pool_index, size, threshold_type,
2160 info->extack);
2161}
2162
2163static int devlink_nl_sb_port_pool_fill(struct sk_buff *msg,
2164 struct devlink *devlink,
2165 struct devlink_port *devlink_port,
2166 struct devlink_sb *devlink_sb,
2167 u16 pool_index,
2168 enum devlink_command cmd,
2169 u32 portid, u32 seq, int flags)
2170{
2171 const struct devlink_ops *ops = devlink->ops;
2172 u32 threshold;
2173 void *hdr;
2174 int err;
2175
2176 err = ops->sb_port_pool_get(devlink_port, devlink_sb->index,
2177 pool_index, &threshold);
2178 if (err)
2179 return err;
2180
2181 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
2182 if (!hdr)
2183 return -EMSGSIZE;
2184
2185 if (devlink_nl_put_handle(msg, devlink))
2186 goto nla_put_failure;
2187 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
2188 goto nla_put_failure;
2189 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
2190 goto nla_put_failure;
2191 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
2192 goto nla_put_failure;
2193 if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
2194 goto nla_put_failure;
2195
2196 if (ops->sb_occ_port_pool_get) {
2197 u32 cur;
2198 u32 max;
2199
2200 err = ops->sb_occ_port_pool_get(devlink_port, devlink_sb->index,
2201 pool_index, &cur, &max);
2202 if (err && err != -EOPNOTSUPP)
2203 goto sb_occ_get_failure;
2204 if (!err) {
2205 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
2206 goto nla_put_failure;
2207 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
2208 goto nla_put_failure;
2209 }
2210 }
2211
2212 genlmsg_end(msg, hdr);
2213 return 0;
2214
2215nla_put_failure:
2216 err = -EMSGSIZE;
2217sb_occ_get_failure:
2218 genlmsg_cancel(msg, hdr);
2219 return err;
2220}
2221
2222static int devlink_nl_cmd_sb_port_pool_get_doit(struct sk_buff *skb,
2223 struct genl_info *info)
2224{
2225 struct devlink_port *devlink_port = info->user_ptr[1];
2226 struct devlink *devlink = devlink_port->devlink;
2227 struct devlink_sb *devlink_sb;
2228 struct sk_buff *msg;
2229 u16 pool_index;
2230 int err;
2231
2232 devlink_sb = devlink_sb_get_from_info(devlink, info);
2233 if (IS_ERR(devlink_sb))
2234 return PTR_ERR(devlink_sb);
2235
2236 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
2237 &pool_index);
2238 if (err)
2239 return err;
2240
2241 if (!devlink->ops->sb_port_pool_get)
2242 return -EOPNOTSUPP;
2243
2244 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2245 if (!msg)
2246 return -ENOMEM;
2247
2248 err = devlink_nl_sb_port_pool_fill(msg, devlink, devlink_port,
2249 devlink_sb, pool_index,
2250 DEVLINK_CMD_SB_PORT_POOL_NEW,
2251 info->snd_portid, info->snd_seq, 0);
2252 if (err) {
2253 nlmsg_free(msg);
2254 return err;
2255 }
2256
2257 return genlmsg_reply(msg, info);
2258}
2259
2260static int __sb_port_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
2261 struct devlink *devlink,
2262 struct devlink_sb *devlink_sb,
2263 u32 portid, u32 seq)
2264{
2265 struct devlink_port *devlink_port;
2266 u16 pool_count = devlink_sb_pool_count(devlink_sb);
2267 u16 pool_index;
2268 int err;
2269
2270 list_for_each_entry(devlink_port, &devlink->port_list, list) {
2271 for (pool_index = 0; pool_index < pool_count; pool_index++) {
2272 if (*p_idx < start) {
2273 (*p_idx)++;
2274 continue;
2275 }
2276 err = devlink_nl_sb_port_pool_fill(msg, devlink,
2277 devlink_port,
2278 devlink_sb,
2279 pool_index,
2280 DEVLINK_CMD_SB_PORT_POOL_NEW,
2281 portid, seq,
2282 NLM_F_MULTI);
2283 if (err)
2284 return err;
2285 (*p_idx)++;
2286 }
2287 }
2288 return 0;
2289}
2290
2291static int devlink_nl_cmd_sb_port_pool_get_dumpit(struct sk_buff *msg,
2292 struct netlink_callback *cb)
2293{
2294 struct devlink *devlink;
2295 struct devlink_sb *devlink_sb;
2296 int start = cb->args[0];
2297 unsigned long index;
2298 int idx = 0;
2299 int err = 0;
2300
2301 mutex_lock(&devlink_mutex);
2302 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
2303 if (!devlink_try_get(devlink))
2304 continue;
2305
2306 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
2307 !devlink->ops->sb_port_pool_get)
2308 goto retry;
2309
2310 mutex_lock(&devlink->lock);
2311 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
2312 err = __sb_port_pool_get_dumpit(msg, start, &idx,
2313 devlink, devlink_sb,
2314 NETLINK_CB(cb->skb).portid,
2315 cb->nlh->nlmsg_seq);
2316 if (err == -EOPNOTSUPP) {
2317 err = 0;
2318 } else if (err) {
2319 mutex_unlock(&devlink->lock);
2320 devlink_put(devlink);
2321 goto out;
2322 }
2323 }
2324 mutex_unlock(&devlink->lock);
2325retry:
2326 devlink_put(devlink);
2327 }
2328out:
2329 mutex_unlock(&devlink_mutex);
2330
2331 if (err != -EMSGSIZE)
2332 return err;
2333
2334 cb->args[0] = idx;
2335 return msg->len;
2336}
2337
2338static int devlink_sb_port_pool_set(struct devlink_port *devlink_port,
2339 unsigned int sb_index, u16 pool_index,
2340 u32 threshold,
2341 struct netlink_ext_ack *extack)
2342
2343{
2344 const struct devlink_ops *ops = devlink_port->devlink->ops;
2345
2346 if (ops->sb_port_pool_set)
2347 return ops->sb_port_pool_set(devlink_port, sb_index,
2348 pool_index, threshold, extack);
2349 return -EOPNOTSUPP;
2350}
2351
2352static int devlink_nl_cmd_sb_port_pool_set_doit(struct sk_buff *skb,
2353 struct genl_info *info)
2354{
2355 struct devlink_port *devlink_port = info->user_ptr[1];
2356 struct devlink *devlink = info->user_ptr[0];
2357 struct devlink_sb *devlink_sb;
2358 u16 pool_index;
2359 u32 threshold;
2360 int err;
2361
2362 devlink_sb = devlink_sb_get_from_info(devlink, info);
2363 if (IS_ERR(devlink_sb))
2364 return PTR_ERR(devlink_sb);
2365
2366 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
2367 &pool_index);
2368 if (err)
2369 return err;
2370
2371 if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD])
2372 return -EINVAL;
2373
2374 threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
2375 return devlink_sb_port_pool_set(devlink_port, devlink_sb->index,
2376 pool_index, threshold, info->extack);
2377}
2378
2379static int
2380devlink_nl_sb_tc_pool_bind_fill(struct sk_buff *msg, struct devlink *devlink,
2381 struct devlink_port *devlink_port,
2382 struct devlink_sb *devlink_sb, u16 tc_index,
2383 enum devlink_sb_pool_type pool_type,
2384 enum devlink_command cmd,
2385 u32 portid, u32 seq, int flags)
2386{
2387 const struct devlink_ops *ops = devlink->ops;
2388 u16 pool_index;
2389 u32 threshold;
2390 void *hdr;
2391 int err;
2392
2393 err = ops->sb_tc_pool_bind_get(devlink_port, devlink_sb->index,
2394 tc_index, pool_type,
2395 &pool_index, &threshold);
2396 if (err)
2397 return err;
2398
2399 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
2400 if (!hdr)
2401 return -EMSGSIZE;
2402
2403 if (devlink_nl_put_handle(msg, devlink))
2404 goto nla_put_failure;
2405 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
2406 goto nla_put_failure;
2407 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
2408 goto nla_put_failure;
2409 if (nla_put_u16(msg, DEVLINK_ATTR_SB_TC_INDEX, tc_index))
2410 goto nla_put_failure;
2411 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_type))
2412 goto nla_put_failure;
2413 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
2414 goto nla_put_failure;
2415 if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
2416 goto nla_put_failure;
2417
2418 if (ops->sb_occ_tc_port_bind_get) {
2419 u32 cur;
2420 u32 max;
2421
2422 err = ops->sb_occ_tc_port_bind_get(devlink_port,
2423 devlink_sb->index,
2424 tc_index, pool_type,
2425 &cur, &max);
2426 if (err && err != -EOPNOTSUPP)
2427 return err;
2428 if (!err) {
2429 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
2430 goto nla_put_failure;
2431 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
2432 goto nla_put_failure;
2433 }
2434 }
2435
2436 genlmsg_end(msg, hdr);
2437 return 0;
2438
2439nla_put_failure:
2440 genlmsg_cancel(msg, hdr);
2441 return -EMSGSIZE;
2442}
2443
2444static int devlink_nl_cmd_sb_tc_pool_bind_get_doit(struct sk_buff *skb,
2445 struct genl_info *info)
2446{
2447 struct devlink_port *devlink_port = info->user_ptr[1];
2448 struct devlink *devlink = devlink_port->devlink;
2449 struct devlink_sb *devlink_sb;
2450 struct sk_buff *msg;
2451 enum devlink_sb_pool_type pool_type;
2452 u16 tc_index;
2453 int err;
2454
2455 devlink_sb = devlink_sb_get_from_info(devlink, info);
2456 if (IS_ERR(devlink_sb))
2457 return PTR_ERR(devlink_sb);
2458
2459 err = devlink_sb_pool_type_get_from_info(info, &pool_type);
2460 if (err)
2461 return err;
2462
2463 err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
2464 pool_type, &tc_index);
2465 if (err)
2466 return err;
2467
2468 if (!devlink->ops->sb_tc_pool_bind_get)
2469 return -EOPNOTSUPP;
2470
2471 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2472 if (!msg)
2473 return -ENOMEM;
2474
2475 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink, devlink_port,
2476 devlink_sb, tc_index, pool_type,
2477 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
2478 info->snd_portid,
2479 info->snd_seq, 0);
2480 if (err) {
2481 nlmsg_free(msg);
2482 return err;
2483 }
2484
2485 return genlmsg_reply(msg, info);
2486}
2487
2488static int __sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
2489 int start, int *p_idx,
2490 struct devlink *devlink,
2491 struct devlink_sb *devlink_sb,
2492 u32 portid, u32 seq)
2493{
2494 struct devlink_port *devlink_port;
2495 u16 tc_index;
2496 int err;
2497
2498 list_for_each_entry(devlink_port, &devlink->port_list, list) {
2499 for (tc_index = 0;
2500 tc_index < devlink_sb->ingress_tc_count; tc_index++) {
2501 if (*p_idx < start) {
2502 (*p_idx)++;
2503 continue;
2504 }
2505 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
2506 devlink_port,
2507 devlink_sb,
2508 tc_index,
2509 DEVLINK_SB_POOL_TYPE_INGRESS,
2510 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
2511 portid, seq,
2512 NLM_F_MULTI);
2513 if (err)
2514 return err;
2515 (*p_idx)++;
2516 }
2517 for (tc_index = 0;
2518 tc_index < devlink_sb->egress_tc_count; tc_index++) {
2519 if (*p_idx < start) {
2520 (*p_idx)++;
2521 continue;
2522 }
2523 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
2524 devlink_port,
2525 devlink_sb,
2526 tc_index,
2527 DEVLINK_SB_POOL_TYPE_EGRESS,
2528 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
2529 portid, seq,
2530 NLM_F_MULTI);
2531 if (err)
2532 return err;
2533 (*p_idx)++;
2534 }
2535 }
2536 return 0;
2537}
2538
2539static int
2540devlink_nl_cmd_sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
2541 struct netlink_callback *cb)
2542{
2543 struct devlink *devlink;
2544 struct devlink_sb *devlink_sb;
2545 int start = cb->args[0];
2546 unsigned long index;
2547 int idx = 0;
2548 int err = 0;
2549
2550 mutex_lock(&devlink_mutex);
2551 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
2552 if (!devlink_try_get(devlink))
2553 continue;
2554
2555 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
2556 !devlink->ops->sb_tc_pool_bind_get)
2557 goto retry;
2558
2559 mutex_lock(&devlink->lock);
2560 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
2561 err = __sb_tc_pool_bind_get_dumpit(msg, start, &idx,
2562 devlink,
2563 devlink_sb,
2564 NETLINK_CB(cb->skb).portid,
2565 cb->nlh->nlmsg_seq);
2566 if (err == -EOPNOTSUPP) {
2567 err = 0;
2568 } else if (err) {
2569 mutex_unlock(&devlink->lock);
2570 devlink_put(devlink);
2571 goto out;
2572 }
2573 }
2574 mutex_unlock(&devlink->lock);
2575retry:
2576 devlink_put(devlink);
2577 }
2578out:
2579 mutex_unlock(&devlink_mutex);
2580
2581 if (err != -EMSGSIZE)
2582 return err;
2583
2584 cb->args[0] = idx;
2585 return msg->len;
2586}
2587
2588static int devlink_sb_tc_pool_bind_set(struct devlink_port *devlink_port,
2589 unsigned int sb_index, u16 tc_index,
2590 enum devlink_sb_pool_type pool_type,
2591 u16 pool_index, u32 threshold,
2592 struct netlink_ext_ack *extack)
2593
2594{
2595 const struct devlink_ops *ops = devlink_port->devlink->ops;
2596
2597 if (ops->sb_tc_pool_bind_set)
2598 return ops->sb_tc_pool_bind_set(devlink_port, sb_index,
2599 tc_index, pool_type,
2600 pool_index, threshold, extack);
2601 return -EOPNOTSUPP;
2602}
2603
2604static int devlink_nl_cmd_sb_tc_pool_bind_set_doit(struct sk_buff *skb,
2605 struct genl_info *info)
2606{
2607 struct devlink_port *devlink_port = info->user_ptr[1];
2608 struct devlink *devlink = info->user_ptr[0];
2609 enum devlink_sb_pool_type pool_type;
2610 struct devlink_sb *devlink_sb;
2611 u16 tc_index;
2612 u16 pool_index;
2613 u32 threshold;
2614 int err;
2615
2616 devlink_sb = devlink_sb_get_from_info(devlink, info);
2617 if (IS_ERR(devlink_sb))
2618 return PTR_ERR(devlink_sb);
2619
2620 err = devlink_sb_pool_type_get_from_info(info, &pool_type);
2621 if (err)
2622 return err;
2623
2624 err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
2625 pool_type, &tc_index);
2626 if (err)
2627 return err;
2628
2629 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
2630 &pool_index);
2631 if (err)
2632 return err;
2633
2634 if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD])
2635 return -EINVAL;
2636
2637 threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
2638 return devlink_sb_tc_pool_bind_set(devlink_port, devlink_sb->index,
2639 tc_index, pool_type,
2640 pool_index, threshold, info->extack);
2641}
2642
2643static int devlink_nl_cmd_sb_occ_snapshot_doit(struct sk_buff *skb,
2644 struct genl_info *info)
2645{
2646 struct devlink *devlink = info->user_ptr[0];
2647 const struct devlink_ops *ops = devlink->ops;
2648 struct devlink_sb *devlink_sb;
2649
2650 devlink_sb = devlink_sb_get_from_info(devlink, info);
2651 if (IS_ERR(devlink_sb))
2652 return PTR_ERR(devlink_sb);
2653
2654 if (ops->sb_occ_snapshot)
2655 return ops->sb_occ_snapshot(devlink, devlink_sb->index);
2656 return -EOPNOTSUPP;
2657}
2658
2659static int devlink_nl_cmd_sb_occ_max_clear_doit(struct sk_buff *skb,
2660 struct genl_info *info)
2661{
2662 struct devlink *devlink = info->user_ptr[0];
2663 const struct devlink_ops *ops = devlink->ops;
2664 struct devlink_sb *devlink_sb;
2665
2666 devlink_sb = devlink_sb_get_from_info(devlink, info);
2667 if (IS_ERR(devlink_sb))
2668 return PTR_ERR(devlink_sb);
2669
2670 if (ops->sb_occ_max_clear)
2671 return ops->sb_occ_max_clear(devlink, devlink_sb->index);
2672 return -EOPNOTSUPP;
2673}
2674
2675static int devlink_nl_eswitch_fill(struct sk_buff *msg, struct devlink *devlink,
2676 enum devlink_command cmd, u32 portid,
2677 u32 seq, int flags)
2678{
2679 const struct devlink_ops *ops = devlink->ops;
2680 enum devlink_eswitch_encap_mode encap_mode;
2681 u8 inline_mode;
2682 void *hdr;
2683 int err = 0;
2684 u16 mode;
2685
2686 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
2687 if (!hdr)
2688 return -EMSGSIZE;
2689
2690 err = devlink_nl_put_handle(msg, devlink);
2691 if (err)
2692 goto nla_put_failure;
2693
2694 if (ops->eswitch_mode_get) {
2695 err = ops->eswitch_mode_get(devlink, &mode);
2696 if (err)
2697 goto nla_put_failure;
2698 err = nla_put_u16(msg, DEVLINK_ATTR_ESWITCH_MODE, mode);
2699 if (err)
2700 goto nla_put_failure;
2701 }
2702
2703 if (ops->eswitch_inline_mode_get) {
2704 err = ops->eswitch_inline_mode_get(devlink, &inline_mode);
2705 if (err)
2706 goto nla_put_failure;
2707 err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_INLINE_MODE,
2708 inline_mode);
2709 if (err)
2710 goto nla_put_failure;
2711 }
2712
2713 if (ops->eswitch_encap_mode_get) {
2714 err = ops->eswitch_encap_mode_get(devlink, &encap_mode);
2715 if (err)
2716 goto nla_put_failure;
2717 err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_ENCAP_MODE, encap_mode);
2718 if (err)
2719 goto nla_put_failure;
2720 }
2721
2722 genlmsg_end(msg, hdr);
2723 return 0;
2724
2725nla_put_failure:
2726 genlmsg_cancel(msg, hdr);
2727 return err;
2728}
2729
2730static int devlink_nl_cmd_eswitch_get_doit(struct sk_buff *skb,
2731 struct genl_info *info)
2732{
2733 struct devlink *devlink = info->user_ptr[0];
2734 struct sk_buff *msg;
2735 int err;
2736
2737 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2738 if (!msg)
2739 return -ENOMEM;
2740
2741 err = devlink_nl_eswitch_fill(msg, devlink, DEVLINK_CMD_ESWITCH_GET,
2742 info->snd_portid, info->snd_seq, 0);
2743
2744 if (err) {
2745 nlmsg_free(msg);
2746 return err;
2747 }
2748
2749 return genlmsg_reply(msg, info);
2750}
2751
2752static int devlink_rate_nodes_check(struct devlink *devlink, u16 mode,
2753 struct netlink_ext_ack *extack)
2754{
2755 struct devlink_rate *devlink_rate;
2756
2757
2758 mutex_lock(&devlink->lock);
2759 list_for_each_entry(devlink_rate, &devlink->rate_list, list)
2760 if (devlink_rate_is_node(devlink_rate)) {
2761 mutex_unlock(&devlink->lock);
2762 NL_SET_ERR_MSG_MOD(extack, "Rate node(s) exists.");
2763 return -EBUSY;
2764 }
2765 mutex_unlock(&devlink->lock);
2766 return 0;
2767}
2768
2769static int devlink_nl_cmd_eswitch_set_doit(struct sk_buff *skb,
2770 struct genl_info *info)
2771{
2772 struct devlink *devlink = info->user_ptr[0];
2773 const struct devlink_ops *ops = devlink->ops;
2774 enum devlink_eswitch_encap_mode encap_mode;
2775 u8 inline_mode;
2776 int err = 0;
2777 u16 mode;
2778
2779 if (info->attrs[DEVLINK_ATTR_ESWITCH_MODE]) {
2780 if (!ops->eswitch_mode_set)
2781 return -EOPNOTSUPP;
2782 mode = nla_get_u16(info->attrs[DEVLINK_ATTR_ESWITCH_MODE]);
2783 err = devlink_rate_nodes_check(devlink, mode, info->extack);
2784 if (err)
2785 return err;
2786 err = ops->eswitch_mode_set(devlink, mode, info->extack);
2787 if (err)
2788 return err;
2789 }
2790
2791 if (info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]) {
2792 if (!ops->eswitch_inline_mode_set)
2793 return -EOPNOTSUPP;
2794 inline_mode = nla_get_u8(
2795 info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]);
2796 err = ops->eswitch_inline_mode_set(devlink, inline_mode,
2797 info->extack);
2798 if (err)
2799 return err;
2800 }
2801
2802 if (info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]) {
2803 if (!ops->eswitch_encap_mode_set)
2804 return -EOPNOTSUPP;
2805 encap_mode = nla_get_u8(info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]);
2806 err = ops->eswitch_encap_mode_set(devlink, encap_mode,
2807 info->extack);
2808 if (err)
2809 return err;
2810 }
2811
2812 return 0;
2813}
2814
2815int devlink_dpipe_match_put(struct sk_buff *skb,
2816 struct devlink_dpipe_match *match)
2817{
2818 struct devlink_dpipe_header *header = match->header;
2819 struct devlink_dpipe_field *field = &header->fields[match->field_id];
2820 struct nlattr *match_attr;
2821
2822 match_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_MATCH);
2823 if (!match_attr)
2824 return -EMSGSIZE;
2825
2826 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_MATCH_TYPE, match->type) ||
2827 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, match->header_index) ||
2828 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
2829 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
2830 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
2831 goto nla_put_failure;
2832
2833 nla_nest_end(skb, match_attr);
2834 return 0;
2835
2836nla_put_failure:
2837 nla_nest_cancel(skb, match_attr);
2838 return -EMSGSIZE;
2839}
2840EXPORT_SYMBOL_GPL(devlink_dpipe_match_put);
2841
2842static int devlink_dpipe_matches_put(struct devlink_dpipe_table *table,
2843 struct sk_buff *skb)
2844{
2845 struct nlattr *matches_attr;
2846
2847 matches_attr = nla_nest_start_noflag(skb,
2848 DEVLINK_ATTR_DPIPE_TABLE_MATCHES);
2849 if (!matches_attr)
2850 return -EMSGSIZE;
2851
2852 if (table->table_ops->matches_dump(table->priv, skb))
2853 goto nla_put_failure;
2854
2855 nla_nest_end(skb, matches_attr);
2856 return 0;
2857
2858nla_put_failure:
2859 nla_nest_cancel(skb, matches_attr);
2860 return -EMSGSIZE;
2861}
2862
2863int devlink_dpipe_action_put(struct sk_buff *skb,
2864 struct devlink_dpipe_action *action)
2865{
2866 struct devlink_dpipe_header *header = action->header;
2867 struct devlink_dpipe_field *field = &header->fields[action->field_id];
2868 struct nlattr *action_attr;
2869
2870 action_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ACTION);
2871 if (!action_attr)
2872 return -EMSGSIZE;
2873
2874 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_ACTION_TYPE, action->type) ||
2875 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, action->header_index) ||
2876 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
2877 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
2878 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
2879 goto nla_put_failure;
2880
2881 nla_nest_end(skb, action_attr);
2882 return 0;
2883
2884nla_put_failure:
2885 nla_nest_cancel(skb, action_attr);
2886 return -EMSGSIZE;
2887}
2888EXPORT_SYMBOL_GPL(devlink_dpipe_action_put);
2889
2890static int devlink_dpipe_actions_put(struct devlink_dpipe_table *table,
2891 struct sk_buff *skb)
2892{
2893 struct nlattr *actions_attr;
2894
2895 actions_attr = nla_nest_start_noflag(skb,
2896 DEVLINK_ATTR_DPIPE_TABLE_ACTIONS);
2897 if (!actions_attr)
2898 return -EMSGSIZE;
2899
2900 if (table->table_ops->actions_dump(table->priv, skb))
2901 goto nla_put_failure;
2902
2903 nla_nest_end(skb, actions_attr);
2904 return 0;
2905
2906nla_put_failure:
2907 nla_nest_cancel(skb, actions_attr);
2908 return -EMSGSIZE;
2909}
2910
2911static int devlink_dpipe_table_put(struct sk_buff *skb,
2912 struct devlink_dpipe_table *table)
2913{
2914 struct nlattr *table_attr;
2915 u64 table_size;
2916
2917 table_size = table->table_ops->size_get(table->priv);
2918 table_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLE);
2919 if (!table_attr)
2920 return -EMSGSIZE;
2921
2922 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_TABLE_NAME, table->name) ||
2923 nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_SIZE, table_size,
2924 DEVLINK_ATTR_PAD))
2925 goto nla_put_failure;
2926 if (nla_put_u8(skb, DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED,
2927 table->counters_enabled))
2928 goto nla_put_failure;
2929
2930 if (table->resource_valid) {
2931 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_ID,
2932 table->resource_id, DEVLINK_ATTR_PAD) ||
2933 nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_UNITS,
2934 table->resource_units, DEVLINK_ATTR_PAD))
2935 goto nla_put_failure;
2936 }
2937 if (devlink_dpipe_matches_put(table, skb))
2938 goto nla_put_failure;
2939
2940 if (devlink_dpipe_actions_put(table, skb))
2941 goto nla_put_failure;
2942
2943 nla_nest_end(skb, table_attr);
2944 return 0;
2945
2946nla_put_failure:
2947 nla_nest_cancel(skb, table_attr);
2948 return -EMSGSIZE;
2949}
2950
2951static int devlink_dpipe_send_and_alloc_skb(struct sk_buff **pskb,
2952 struct genl_info *info)
2953{
2954 int err;
2955
2956 if (*pskb) {
2957 err = genlmsg_reply(*pskb, info);
2958 if (err)
2959 return err;
2960 }
2961 *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2962 if (!*pskb)
2963 return -ENOMEM;
2964 return 0;
2965}
2966
2967static int devlink_dpipe_tables_fill(struct genl_info *info,
2968 enum devlink_command cmd, int flags,
2969 struct list_head *dpipe_tables,
2970 const char *table_name)
2971{
2972 struct devlink *devlink = info->user_ptr[0];
2973 struct devlink_dpipe_table *table;
2974 struct nlattr *tables_attr;
2975 struct sk_buff *skb = NULL;
2976 struct nlmsghdr *nlh;
2977 bool incomplete;
2978 void *hdr;
2979 int i;
2980 int err;
2981
2982 table = list_first_entry(dpipe_tables,
2983 struct devlink_dpipe_table, list);
2984start_again:
2985 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2986 if (err)
2987 return err;
2988
2989 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
2990 &devlink_nl_family, NLM_F_MULTI, cmd);
2991 if (!hdr) {
2992 nlmsg_free(skb);
2993 return -EMSGSIZE;
2994 }
2995
2996 if (devlink_nl_put_handle(skb, devlink))
2997 goto nla_put_failure;
2998 tables_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLES);
2999 if (!tables_attr)
3000 goto nla_put_failure;
3001
3002 i = 0;
3003 incomplete = false;
3004 list_for_each_entry_from(table, dpipe_tables, list) {
3005 if (!table_name) {
3006 err = devlink_dpipe_table_put(skb, table);
3007 if (err) {
3008 if (!i)
3009 goto err_table_put;
3010 incomplete = true;
3011 break;
3012 }
3013 } else {
3014 if (!strcmp(table->name, table_name)) {
3015 err = devlink_dpipe_table_put(skb, table);
3016 if (err)
3017 break;
3018 }
3019 }
3020 i++;
3021 }
3022
3023 nla_nest_end(skb, tables_attr);
3024 genlmsg_end(skb, hdr);
3025 if (incomplete)
3026 goto start_again;
3027
3028send_done:
3029 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
3030 NLMSG_DONE, 0, flags | NLM_F_MULTI);
3031 if (!nlh) {
3032 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
3033 if (err)
3034 return err;
3035 goto send_done;
3036 }
3037
3038 return genlmsg_reply(skb, info);
3039
3040nla_put_failure:
3041 err = -EMSGSIZE;
3042err_table_put:
3043 nlmsg_free(skb);
3044 return err;
3045}
3046
3047static int devlink_nl_cmd_dpipe_table_get(struct sk_buff *skb,
3048 struct genl_info *info)
3049{
3050 struct devlink *devlink = info->user_ptr[0];
3051 const char *table_name = NULL;
3052
3053 if (info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
3054 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
3055
3056 return devlink_dpipe_tables_fill(info, DEVLINK_CMD_DPIPE_TABLE_GET, 0,
3057 &devlink->dpipe_table_list,
3058 table_name);
3059}
3060
3061static int devlink_dpipe_value_put(struct sk_buff *skb,
3062 struct devlink_dpipe_value *value)
3063{
3064 if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE,
3065 value->value_size, value->value))
3066 return -EMSGSIZE;
3067 if (value->mask)
3068 if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE_MASK,
3069 value->value_size, value->mask))
3070 return -EMSGSIZE;
3071 if (value->mapping_valid)
3072 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_VALUE_MAPPING,
3073 value->mapping_value))
3074 return -EMSGSIZE;
3075 return 0;
3076}
3077
3078static int devlink_dpipe_action_value_put(struct sk_buff *skb,
3079 struct devlink_dpipe_value *value)
3080{
3081 if (!value->action)
3082 return -EINVAL;
3083 if (devlink_dpipe_action_put(skb, value->action))
3084 return -EMSGSIZE;
3085 if (devlink_dpipe_value_put(skb, value))
3086 return -EMSGSIZE;
3087 return 0;
3088}
3089
3090static int devlink_dpipe_action_values_put(struct sk_buff *skb,
3091 struct devlink_dpipe_value *values,
3092 unsigned int values_count)
3093{
3094 struct nlattr *action_attr;
3095 int i;
3096 int err;
3097
3098 for (i = 0; i < values_count; i++) {
3099 action_attr = nla_nest_start_noflag(skb,
3100 DEVLINK_ATTR_DPIPE_ACTION_VALUE);
3101 if (!action_attr)
3102 return -EMSGSIZE;
3103 err = devlink_dpipe_action_value_put(skb, &values[i]);
3104 if (err)
3105 goto err_action_value_put;
3106 nla_nest_end(skb, action_attr);
3107 }
3108 return 0;
3109
3110err_action_value_put:
3111 nla_nest_cancel(skb, action_attr);
3112 return err;
3113}
3114
3115static int devlink_dpipe_match_value_put(struct sk_buff *skb,
3116 struct devlink_dpipe_value *value)
3117{
3118 if (!value->match)
3119 return -EINVAL;
3120 if (devlink_dpipe_match_put(skb, value->match))
3121 return -EMSGSIZE;
3122 if (devlink_dpipe_value_put(skb, value))
3123 return -EMSGSIZE;
3124 return 0;
3125}
3126
3127static int devlink_dpipe_match_values_put(struct sk_buff *skb,
3128 struct devlink_dpipe_value *values,
3129 unsigned int values_count)
3130{
3131 struct nlattr *match_attr;
3132 int i;
3133 int err;
3134
3135 for (i = 0; i < values_count; i++) {
3136 match_attr = nla_nest_start_noflag(skb,
3137 DEVLINK_ATTR_DPIPE_MATCH_VALUE);
3138 if (!match_attr)
3139 return -EMSGSIZE;
3140 err = devlink_dpipe_match_value_put(skb, &values[i]);
3141 if (err)
3142 goto err_match_value_put;
3143 nla_nest_end(skb, match_attr);
3144 }
3145 return 0;
3146
3147err_match_value_put:
3148 nla_nest_cancel(skb, match_attr);
3149 return err;
3150}
3151
3152static int devlink_dpipe_entry_put(struct sk_buff *skb,
3153 struct devlink_dpipe_entry *entry)
3154{
3155 struct nlattr *entry_attr, *matches_attr, *actions_attr;
3156 int err;
3157
3158 entry_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ENTRY);
3159 if (!entry_attr)
3160 return -EMSGSIZE;
3161
3162 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_INDEX, entry->index,
3163 DEVLINK_ATTR_PAD))
3164 goto nla_put_failure;
3165 if (entry->counter_valid)
3166 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_COUNTER,
3167 entry->counter, DEVLINK_ATTR_PAD))
3168 goto nla_put_failure;
3169
3170 matches_attr = nla_nest_start_noflag(skb,
3171 DEVLINK_ATTR_DPIPE_ENTRY_MATCH_VALUES);
3172 if (!matches_attr)
3173 goto nla_put_failure;
3174
3175 err = devlink_dpipe_match_values_put(skb, entry->match_values,
3176 entry->match_values_count);
3177 if (err) {
3178 nla_nest_cancel(skb, matches_attr);
3179 goto err_match_values_put;
3180 }
3181 nla_nest_end(skb, matches_attr);
3182
3183 actions_attr = nla_nest_start_noflag(skb,
3184 DEVLINK_ATTR_DPIPE_ENTRY_ACTION_VALUES);
3185 if (!actions_attr)
3186 goto nla_put_failure;
3187
3188 err = devlink_dpipe_action_values_put(skb, entry->action_values,
3189 entry->action_values_count);
3190 if (err) {
3191 nla_nest_cancel(skb, actions_attr);
3192 goto err_action_values_put;
3193 }
3194 nla_nest_end(skb, actions_attr);
3195
3196 nla_nest_end(skb, entry_attr);
3197 return 0;
3198
3199nla_put_failure:
3200 err = -EMSGSIZE;
3201err_match_values_put:
3202err_action_values_put:
3203 nla_nest_cancel(skb, entry_attr);
3204 return err;
3205}
3206
3207static struct devlink_dpipe_table *
3208devlink_dpipe_table_find(struct list_head *dpipe_tables,
3209 const char *table_name, struct devlink *devlink)
3210{
3211 struct devlink_dpipe_table *table;
3212 list_for_each_entry_rcu(table, dpipe_tables, list,
3213 lockdep_is_held(&devlink->lock)) {
3214 if (!strcmp(table->name, table_name))
3215 return table;
3216 }
3217 return NULL;
3218}
3219
3220int devlink_dpipe_entry_ctx_prepare(struct devlink_dpipe_dump_ctx *dump_ctx)
3221{
3222 struct devlink *devlink;
3223 int err;
3224
3225 err = devlink_dpipe_send_and_alloc_skb(&dump_ctx->skb,
3226 dump_ctx->info);
3227 if (err)
3228 return err;
3229
3230 dump_ctx->hdr = genlmsg_put(dump_ctx->skb,
3231 dump_ctx->info->snd_portid,
3232 dump_ctx->info->snd_seq,
3233 &devlink_nl_family, NLM_F_MULTI,
3234 dump_ctx->cmd);
3235 if (!dump_ctx->hdr)
3236 goto nla_put_failure;
3237
3238 devlink = dump_ctx->info->user_ptr[0];
3239 if (devlink_nl_put_handle(dump_ctx->skb, devlink))
3240 goto nla_put_failure;
3241 dump_ctx->nest = nla_nest_start_noflag(dump_ctx->skb,
3242 DEVLINK_ATTR_DPIPE_ENTRIES);
3243 if (!dump_ctx->nest)
3244 goto nla_put_failure;
3245 return 0;
3246
3247nla_put_failure:
3248 nlmsg_free(dump_ctx->skb);
3249 return -EMSGSIZE;
3250}
3251EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_prepare);
3252
3253int devlink_dpipe_entry_ctx_append(struct devlink_dpipe_dump_ctx *dump_ctx,
3254 struct devlink_dpipe_entry *entry)
3255{
3256 return devlink_dpipe_entry_put(dump_ctx->skb, entry);
3257}
3258EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_append);
3259
3260int devlink_dpipe_entry_ctx_close(struct devlink_dpipe_dump_ctx *dump_ctx)
3261{
3262 nla_nest_end(dump_ctx->skb, dump_ctx->nest);
3263 genlmsg_end(dump_ctx->skb, dump_ctx->hdr);
3264 return 0;
3265}
3266EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_close);
3267
3268void devlink_dpipe_entry_clear(struct devlink_dpipe_entry *entry)
3269
3270{
3271 unsigned int value_count, value_index;
3272 struct devlink_dpipe_value *value;
3273
3274 value = entry->action_values;
3275 value_count = entry->action_values_count;
3276 for (value_index = 0; value_index < value_count; value_index++) {
3277 kfree(value[value_index].value);
3278 kfree(value[value_index].mask);
3279 }
3280
3281 value = entry->match_values;
3282 value_count = entry->match_values_count;
3283 for (value_index = 0; value_index < value_count; value_index++) {
3284 kfree(value[value_index].value);
3285 kfree(value[value_index].mask);
3286 }
3287}
3288EXPORT_SYMBOL(devlink_dpipe_entry_clear);
3289
3290static int devlink_dpipe_entries_fill(struct genl_info *info,
3291 enum devlink_command cmd, int flags,
3292 struct devlink_dpipe_table *table)
3293{
3294 struct devlink_dpipe_dump_ctx dump_ctx;
3295 struct nlmsghdr *nlh;
3296 int err;
3297
3298 dump_ctx.skb = NULL;
3299 dump_ctx.cmd = cmd;
3300 dump_ctx.info = info;
3301
3302 err = table->table_ops->entries_dump(table->priv,
3303 table->counters_enabled,
3304 &dump_ctx);
3305 if (err)
3306 return err;
3307
3308send_done:
3309 nlh = nlmsg_put(dump_ctx.skb, info->snd_portid, info->snd_seq,
3310 NLMSG_DONE, 0, flags | NLM_F_MULTI);
3311 if (!nlh) {
3312 err = devlink_dpipe_send_and_alloc_skb(&dump_ctx.skb, info);
3313 if (err)
3314 return err;
3315 goto send_done;
3316 }
3317 return genlmsg_reply(dump_ctx.skb, info);
3318}
3319
3320static int devlink_nl_cmd_dpipe_entries_get(struct sk_buff *skb,
3321 struct genl_info *info)
3322{
3323 struct devlink *devlink = info->user_ptr[0];
3324 struct devlink_dpipe_table *table;
3325 const char *table_name;
3326
3327 if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
3328 return -EINVAL;
3329
3330 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
3331 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
3332 table_name, devlink);
3333 if (!table)
3334 return -EINVAL;
3335
3336 if (!table->table_ops->entries_dump)
3337 return -EINVAL;
3338
3339 return devlink_dpipe_entries_fill(info, DEVLINK_CMD_DPIPE_ENTRIES_GET,
3340 0, table);
3341}
3342
3343static int devlink_dpipe_fields_put(struct sk_buff *skb,
3344 const struct devlink_dpipe_header *header)
3345{
3346 struct devlink_dpipe_field *field;
3347 struct nlattr *field_attr;
3348 int i;
3349
3350 for (i = 0; i < header->fields_count; i++) {
3351 field = &header->fields[i];
3352 field_attr = nla_nest_start_noflag(skb,
3353 DEVLINK_ATTR_DPIPE_FIELD);
3354 if (!field_attr)
3355 return -EMSGSIZE;
3356 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_FIELD_NAME, field->name) ||
3357 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
3358 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_BITWIDTH, field->bitwidth) ||
3359 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_MAPPING_TYPE, field->mapping_type))
3360 goto nla_put_failure;
3361 nla_nest_end(skb, field_attr);
3362 }
3363 return 0;
3364
3365nla_put_failure:
3366 nla_nest_cancel(skb, field_attr);
3367 return -EMSGSIZE;
3368}
3369
3370static int devlink_dpipe_header_put(struct sk_buff *skb,
3371 struct devlink_dpipe_header *header)
3372{
3373 struct nlattr *fields_attr, *header_attr;
3374 int err;
3375
3376 header_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADER);
3377 if (!header_attr)
3378 return -EMSGSIZE;
3379
3380 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_HEADER_NAME, header->name) ||
3381 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
3382 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
3383 goto nla_put_failure;
3384
3385 fields_attr = nla_nest_start_noflag(skb,
3386 DEVLINK_ATTR_DPIPE_HEADER_FIELDS);
3387 if (!fields_attr)
3388 goto nla_put_failure;
3389
3390 err = devlink_dpipe_fields_put(skb, header);
3391 if (err) {
3392 nla_nest_cancel(skb, fields_attr);
3393 goto nla_put_failure;
3394 }
3395 nla_nest_end(skb, fields_attr);
3396 nla_nest_end(skb, header_attr);
3397 return 0;
3398
3399nla_put_failure:
3400 err = -EMSGSIZE;
3401 nla_nest_cancel(skb, header_attr);
3402 return err;
3403}
3404
3405static int devlink_dpipe_headers_fill(struct genl_info *info,
3406 enum devlink_command cmd, int flags,
3407 struct devlink_dpipe_headers *
3408 dpipe_headers)
3409{
3410 struct devlink *devlink = info->user_ptr[0];
3411 struct nlattr *headers_attr;
3412 struct sk_buff *skb = NULL;
3413 struct nlmsghdr *nlh;
3414 void *hdr;
3415 int i, j;
3416 int err;
3417
3418 i = 0;
3419start_again:
3420 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
3421 if (err)
3422 return err;
3423
3424 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
3425 &devlink_nl_family, NLM_F_MULTI, cmd);
3426 if (!hdr) {
3427 nlmsg_free(skb);
3428 return -EMSGSIZE;
3429 }
3430
3431 if (devlink_nl_put_handle(skb, devlink))
3432 goto nla_put_failure;
3433 headers_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADERS);
3434 if (!headers_attr)
3435 goto nla_put_failure;
3436
3437 j = 0;
3438 for (; i < dpipe_headers->headers_count; i++) {
3439 err = devlink_dpipe_header_put(skb, dpipe_headers->headers[i]);
3440 if (err) {
3441 if (!j)
3442 goto err_table_put;
3443 break;
3444 }
3445 j++;
3446 }
3447 nla_nest_end(skb, headers_attr);
3448 genlmsg_end(skb, hdr);
3449 if (i != dpipe_headers->headers_count)
3450 goto start_again;
3451
3452send_done:
3453 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
3454 NLMSG_DONE, 0, flags | NLM_F_MULTI);
3455 if (!nlh) {
3456 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
3457 if (err)
3458 return err;
3459 goto send_done;
3460 }
3461 return genlmsg_reply(skb, info);
3462
3463nla_put_failure:
3464 err = -EMSGSIZE;
3465err_table_put:
3466 nlmsg_free(skb);
3467 return err;
3468}
3469
3470static int devlink_nl_cmd_dpipe_headers_get(struct sk_buff *skb,
3471 struct genl_info *info)
3472{
3473 struct devlink *devlink = info->user_ptr[0];
3474
3475 if (!devlink->dpipe_headers)
3476 return -EOPNOTSUPP;
3477 return devlink_dpipe_headers_fill(info, DEVLINK_CMD_DPIPE_HEADERS_GET,
3478 0, devlink->dpipe_headers);
3479}
3480
3481static int devlink_dpipe_table_counters_set(struct devlink *devlink,
3482 const char *table_name,
3483 bool enable)
3484{
3485 struct devlink_dpipe_table *table;
3486
3487 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
3488 table_name, devlink);
3489 if (!table)
3490 return -EINVAL;
3491
3492 if (table->counter_control_extern)
3493 return -EOPNOTSUPP;
3494
3495 if (!(table->counters_enabled ^ enable))
3496 return 0;
3497
3498 table->counters_enabled = enable;
3499 if (table->table_ops->counters_set_update)
3500 table->table_ops->counters_set_update(table->priv, enable);
3501 return 0;
3502}
3503
3504static int devlink_nl_cmd_dpipe_table_counters_set(struct sk_buff *skb,
3505 struct genl_info *info)
3506{
3507 struct devlink *devlink = info->user_ptr[0];
3508 const char *table_name;
3509 bool counters_enable;
3510
3511 if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME] ||
3512 !info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED])
3513 return -EINVAL;
3514
3515 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
3516 counters_enable = !!nla_get_u8(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED]);
3517
3518 return devlink_dpipe_table_counters_set(devlink, table_name,
3519 counters_enable);
3520}
3521
3522static struct devlink_resource *
3523devlink_resource_find(struct devlink *devlink,
3524 struct devlink_resource *resource, u64 resource_id)
3525{
3526 struct list_head *resource_list;
3527
3528 if (resource)
3529 resource_list = &resource->resource_list;
3530 else
3531 resource_list = &devlink->resource_list;
3532
3533 list_for_each_entry(resource, resource_list, list) {
3534 struct devlink_resource *child_resource;
3535
3536 if (resource->id == resource_id)
3537 return resource;
3538
3539 child_resource = devlink_resource_find(devlink, resource,
3540 resource_id);
3541 if (child_resource)
3542 return child_resource;
3543 }
3544 return NULL;
3545}
3546
3547static void
3548devlink_resource_validate_children(struct devlink_resource *resource)
3549{
3550 struct devlink_resource *child_resource;
3551 bool size_valid = true;
3552 u64 parts_size = 0;
3553
3554 if (list_empty(&resource->resource_list))
3555 goto out;
3556
3557 list_for_each_entry(child_resource, &resource->resource_list, list)
3558 parts_size += child_resource->size_new;
3559
3560 if (parts_size > resource->size_new)
3561 size_valid = false;
3562out:
3563 resource->size_valid = size_valid;
3564}
3565
3566static int
3567devlink_resource_validate_size(struct devlink_resource *resource, u64 size,
3568 struct netlink_ext_ack *extack)
3569{
3570 u64 reminder;
3571 int err = 0;
3572
3573 if (size > resource->size_params.size_max) {
3574 NL_SET_ERR_MSG_MOD(extack, "Size larger than maximum");
3575 err = -EINVAL;
3576 }
3577
3578 if (size < resource->size_params.size_min) {
3579 NL_SET_ERR_MSG_MOD(extack, "Size smaller than minimum");
3580 err = -EINVAL;
3581 }
3582
3583 div64_u64_rem(size, resource->size_params.size_granularity, &reminder);
3584 if (reminder) {
3585 NL_SET_ERR_MSG_MOD(extack, "Wrong granularity");
3586 err = -EINVAL;
3587 }
3588
3589 return err;
3590}
3591
3592static int devlink_nl_cmd_resource_set(struct sk_buff *skb,
3593 struct genl_info *info)
3594{
3595 struct devlink *devlink = info->user_ptr[0];
3596 struct devlink_resource *resource;
3597 u64 resource_id;
3598 u64 size;
3599 int err;
3600
3601 if (!info->attrs[DEVLINK_ATTR_RESOURCE_ID] ||
3602 !info->attrs[DEVLINK_ATTR_RESOURCE_SIZE])
3603 return -EINVAL;
3604 resource_id = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_ID]);
3605
3606 resource = devlink_resource_find(devlink, NULL, resource_id);
3607 if (!resource)
3608 return -EINVAL;
3609
3610 size = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_SIZE]);
3611 err = devlink_resource_validate_size(resource, size, info->extack);
3612 if (err)
3613 return err;
3614
3615 resource->size_new = size;
3616 devlink_resource_validate_children(resource);
3617 if (resource->parent)
3618 devlink_resource_validate_children(resource->parent);
3619 return 0;
3620}
3621
3622static int
3623devlink_resource_size_params_put(struct devlink_resource *resource,
3624 struct sk_buff *skb)
3625{
3626 struct devlink_resource_size_params *size_params;
3627
3628 size_params = &resource->size_params;
3629 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_GRAN,
3630 size_params->size_granularity, DEVLINK_ATTR_PAD) ||
3631 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MAX,
3632 size_params->size_max, DEVLINK_ATTR_PAD) ||
3633 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MIN,
3634 size_params->size_min, DEVLINK_ATTR_PAD) ||
3635 nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_UNIT, size_params->unit))
3636 return -EMSGSIZE;
3637 return 0;
3638}
3639
3640static int devlink_resource_occ_put(struct devlink_resource *resource,
3641 struct sk_buff *skb)
3642{
3643 if (!resource->occ_get)
3644 return 0;
3645 return nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_OCC,
3646 resource->occ_get(resource->occ_get_priv),
3647 DEVLINK_ATTR_PAD);
3648}
3649
3650static int devlink_resource_put(struct devlink *devlink, struct sk_buff *skb,
3651 struct devlink_resource *resource)
3652{
3653 struct devlink_resource *child_resource;
3654 struct nlattr *child_resource_attr;
3655 struct nlattr *resource_attr;
3656
3657 resource_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_RESOURCE);
3658 if (!resource_attr)
3659 return -EMSGSIZE;
3660
3661 if (nla_put_string(skb, DEVLINK_ATTR_RESOURCE_NAME, resource->name) ||
3662 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE, resource->size,
3663 DEVLINK_ATTR_PAD) ||
3664 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_ID, resource->id,
3665 DEVLINK_ATTR_PAD))
3666 goto nla_put_failure;
3667 if (resource->size != resource->size_new)
3668 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_NEW,
3669 resource->size_new, DEVLINK_ATTR_PAD);
3670 if (devlink_resource_occ_put(resource, skb))
3671 goto nla_put_failure;
3672 if (devlink_resource_size_params_put(resource, skb))
3673 goto nla_put_failure;
3674 if (list_empty(&resource->resource_list))
3675 goto out;
3676
3677 if (nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_SIZE_VALID,
3678 resource->size_valid))
3679 goto nla_put_failure;
3680
3681 child_resource_attr = nla_nest_start_noflag(skb,
3682 DEVLINK_ATTR_RESOURCE_LIST);
3683 if (!child_resource_attr)
3684 goto nla_put_failure;
3685
3686 list_for_each_entry(child_resource, &resource->resource_list, list) {
3687 if (devlink_resource_put(devlink, skb, child_resource))
3688 goto resource_put_failure;
3689 }
3690
3691 nla_nest_end(skb, child_resource_attr);
3692out:
3693 nla_nest_end(skb, resource_attr);
3694 return 0;
3695
3696resource_put_failure:
3697 nla_nest_cancel(skb, child_resource_attr);
3698nla_put_failure:
3699 nla_nest_cancel(skb, resource_attr);
3700 return -EMSGSIZE;
3701}
3702
3703static int devlink_resource_fill(struct genl_info *info,
3704 enum devlink_command cmd, int flags)
3705{
3706 struct devlink *devlink = info->user_ptr[0];
3707 struct devlink_resource *resource;
3708 struct nlattr *resources_attr;
3709 struct sk_buff *skb = NULL;
3710 struct nlmsghdr *nlh;
3711 bool incomplete;
3712 void *hdr;
3713 int i;
3714 int err;
3715
3716 resource = list_first_entry(&devlink->resource_list,
3717 struct devlink_resource, list);
3718start_again:
3719 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
3720 if (err)
3721 return err;
3722
3723 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
3724 &devlink_nl_family, NLM_F_MULTI, cmd);
3725 if (!hdr) {
3726 nlmsg_free(skb);
3727 return -EMSGSIZE;
3728 }
3729
3730 if (devlink_nl_put_handle(skb, devlink))
3731 goto nla_put_failure;
3732
3733 resources_attr = nla_nest_start_noflag(skb,
3734 DEVLINK_ATTR_RESOURCE_LIST);
3735 if (!resources_attr)
3736 goto nla_put_failure;
3737
3738 incomplete = false;
3739 i = 0;
3740 list_for_each_entry_from(resource, &devlink->resource_list, list) {
3741 err = devlink_resource_put(devlink, skb, resource);
3742 if (err) {
3743 if (!i)
3744 goto err_resource_put;
3745 incomplete = true;
3746 break;
3747 }
3748 i++;
3749 }
3750 nla_nest_end(skb, resources_attr);
3751 genlmsg_end(skb, hdr);
3752 if (incomplete)
3753 goto start_again;
3754send_done:
3755 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
3756 NLMSG_DONE, 0, flags | NLM_F_MULTI);
3757 if (!nlh) {
3758 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
3759 if (err)
3760 return err;
3761 goto send_done;
3762 }
3763 return genlmsg_reply(skb, info);
3764
3765nla_put_failure:
3766 err = -EMSGSIZE;
3767err_resource_put:
3768 nlmsg_free(skb);
3769 return err;
3770}
3771
3772static int devlink_nl_cmd_resource_dump(struct sk_buff *skb,
3773 struct genl_info *info)
3774{
3775 struct devlink *devlink = info->user_ptr[0];
3776
3777 if (list_empty(&devlink->resource_list))
3778 return -EOPNOTSUPP;
3779
3780 return devlink_resource_fill(info, DEVLINK_CMD_RESOURCE_DUMP, 0);
3781}
3782
3783static int
3784devlink_resources_validate(struct devlink *devlink,
3785 struct devlink_resource *resource,
3786 struct genl_info *info)
3787{
3788 struct list_head *resource_list;
3789 int err = 0;
3790
3791 if (resource)
3792 resource_list = &resource->resource_list;
3793 else
3794 resource_list = &devlink->resource_list;
3795
3796 list_for_each_entry(resource, resource_list, list) {
3797 if (!resource->size_valid)
3798 return -EINVAL;
3799 err = devlink_resources_validate(devlink, resource, info);
3800 if (err)
3801 return err;
3802 }
3803 return err;
3804}
3805
3806static struct net *devlink_netns_get(struct sk_buff *skb,
3807 struct genl_info *info)
3808{
3809 struct nlattr *netns_pid_attr = info->attrs[DEVLINK_ATTR_NETNS_PID];
3810 struct nlattr *netns_fd_attr = info->attrs[DEVLINK_ATTR_NETNS_FD];
3811 struct nlattr *netns_id_attr = info->attrs[DEVLINK_ATTR_NETNS_ID];
3812 struct net *net;
3813
3814 if (!!netns_pid_attr + !!netns_fd_attr + !!netns_id_attr > 1) {
3815 NL_SET_ERR_MSG_MOD(info->extack, "multiple netns identifying attributes specified");
3816 return ERR_PTR(-EINVAL);
3817 }
3818
3819 if (netns_pid_attr) {
3820 net = get_net_ns_by_pid(nla_get_u32(netns_pid_attr));
3821 } else if (netns_fd_attr) {
3822 net = get_net_ns_by_fd(nla_get_u32(netns_fd_attr));
3823 } else if (netns_id_attr) {
3824 net = get_net_ns_by_id(sock_net(skb->sk),
3825 nla_get_u32(netns_id_attr));
3826 if (!net)
3827 net = ERR_PTR(-EINVAL);
3828 } else {
3829 WARN_ON(1);
3830 net = ERR_PTR(-EINVAL);
3831 }
3832 if (IS_ERR(net)) {
3833 NL_SET_ERR_MSG_MOD(info->extack, "Unknown network namespace");
3834 return ERR_PTR(-EINVAL);
3835 }
3836 if (!netlink_ns_capable(skb, net->user_ns, CAP_NET_ADMIN)) {
3837 put_net(net);
3838 return ERR_PTR(-EPERM);
3839 }
3840 return net;
3841}
3842
3843static void devlink_param_notify(struct devlink *devlink,
3844 unsigned int port_index,
3845 struct devlink_param_item *param_item,
3846 enum devlink_command cmd);
3847
3848static void devlink_ns_change_notify(struct devlink *devlink,
3849 struct net *dest_net, struct net *curr_net,
3850 bool new)
3851{
3852 struct devlink_param_item *param_item;
3853 enum devlink_command cmd;
3854
3855
3856
3857
3858
3859
3860
3861 if (!dest_net || net_eq(dest_net, curr_net))
3862 return;
3863
3864 if (new)
3865 devlink_notify(devlink, DEVLINK_CMD_NEW);
3866
3867 cmd = new ? DEVLINK_CMD_PARAM_NEW : DEVLINK_CMD_PARAM_DEL;
3868 list_for_each_entry(param_item, &devlink->param_list, list)
3869 devlink_param_notify(devlink, 0, param_item, cmd);
3870
3871 if (!new)
3872 devlink_notify(devlink, DEVLINK_CMD_DEL);
3873}
3874
3875static bool devlink_reload_supported(const struct devlink_ops *ops)
3876{
3877 return ops->reload_down && ops->reload_up;
3878}
3879
3880static void devlink_reload_failed_set(struct devlink *devlink,
3881 bool reload_failed)
3882{
3883 if (devlink->reload_failed == reload_failed)
3884 return;
3885 devlink->reload_failed = reload_failed;
3886 devlink_notify(devlink, DEVLINK_CMD_NEW);
3887}
3888
3889bool devlink_is_reload_failed(const struct devlink *devlink)
3890{
3891 return devlink->reload_failed;
3892}
3893EXPORT_SYMBOL_GPL(devlink_is_reload_failed);
3894
3895static void
3896__devlink_reload_stats_update(struct devlink *devlink, u32 *reload_stats,
3897 enum devlink_reload_limit limit, u32 actions_performed)
3898{
3899 unsigned long actions = actions_performed;
3900 int stat_idx;
3901 int action;
3902
3903 for_each_set_bit(action, &actions, __DEVLINK_RELOAD_ACTION_MAX) {
3904 stat_idx = limit * __DEVLINK_RELOAD_ACTION_MAX + action;
3905 reload_stats[stat_idx]++;
3906 }
3907 devlink_notify(devlink, DEVLINK_CMD_NEW);
3908}
3909
3910static void
3911devlink_reload_stats_update(struct devlink *devlink, enum devlink_reload_limit limit,
3912 u32 actions_performed)
3913{
3914 __devlink_reload_stats_update(devlink, devlink->stats.reload_stats, limit,
3915 actions_performed);
3916}
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932void devlink_remote_reload_actions_performed(struct devlink *devlink,
3933 enum devlink_reload_limit limit,
3934 u32 actions_performed)
3935{
3936 if (WARN_ON(!actions_performed ||
3937 actions_performed & BIT(DEVLINK_RELOAD_ACTION_UNSPEC) ||
3938 actions_performed >= BIT(__DEVLINK_RELOAD_ACTION_MAX) ||
3939 limit > DEVLINK_RELOAD_LIMIT_MAX))
3940 return;
3941
3942 __devlink_reload_stats_update(devlink, devlink->stats.remote_reload_stats, limit,
3943 actions_performed);
3944}
3945EXPORT_SYMBOL_GPL(devlink_remote_reload_actions_performed);
3946
3947static int devlink_reload(struct devlink *devlink, struct net *dest_net,
3948 enum devlink_reload_action action, enum devlink_reload_limit limit,
3949 u32 *actions_performed, struct netlink_ext_ack *extack)
3950{
3951 u32 remote_reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE];
3952 struct net *curr_net;
3953 int err;
3954
3955 if (!devlink->reload_enabled)
3956 return -EOPNOTSUPP;
3957
3958 memcpy(remote_reload_stats, devlink->stats.remote_reload_stats,
3959 sizeof(remote_reload_stats));
3960
3961 curr_net = devlink_net(devlink);
3962 devlink_ns_change_notify(devlink, dest_net, curr_net, false);
3963 err = devlink->ops->reload_down(devlink, !!dest_net, action, limit, extack);
3964 if (err)
3965 return err;
3966
3967 if (dest_net && !net_eq(dest_net, curr_net))
3968 write_pnet(&devlink->_net, dest_net);
3969
3970 err = devlink->ops->reload_up(devlink, action, limit, actions_performed, extack);
3971 devlink_reload_failed_set(devlink, !!err);
3972 if (err)
3973 return err;
3974
3975 devlink_ns_change_notify(devlink, dest_net, curr_net, true);
3976 WARN_ON(!(*actions_performed & BIT(action)));
3977
3978 WARN_ON(memcmp(remote_reload_stats, devlink->stats.remote_reload_stats,
3979 sizeof(remote_reload_stats)));
3980 devlink_reload_stats_update(devlink, limit, *actions_performed);
3981 return 0;
3982}
3983
3984static int
3985devlink_nl_reload_actions_performed_snd(struct devlink *devlink, u32 actions_performed,
3986 enum devlink_command cmd, struct genl_info *info)
3987{
3988 struct sk_buff *msg;
3989 void *hdr;
3990
3991 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3992 if (!msg)
3993 return -ENOMEM;
3994
3995 hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq, &devlink_nl_family, 0, cmd);
3996 if (!hdr)
3997 goto free_msg;
3998
3999 if (devlink_nl_put_handle(msg, devlink))
4000 goto nla_put_failure;
4001
4002 if (nla_put_bitfield32(msg, DEVLINK_ATTR_RELOAD_ACTIONS_PERFORMED, actions_performed,
4003 actions_performed))
4004 goto nla_put_failure;
4005 genlmsg_end(msg, hdr);
4006
4007 return genlmsg_reply(msg, info);
4008
4009nla_put_failure:
4010 genlmsg_cancel(msg, hdr);
4011free_msg:
4012 nlmsg_free(msg);
4013 return -EMSGSIZE;
4014}
4015
4016static int devlink_nl_cmd_reload(struct sk_buff *skb, struct genl_info *info)
4017{
4018 struct devlink *devlink = info->user_ptr[0];
4019 enum devlink_reload_action action;
4020 enum devlink_reload_limit limit;
4021 struct net *dest_net = NULL;
4022 u32 actions_performed;
4023 int err;
4024
4025 if (!devlink_reload_supported(devlink->ops))
4026 return -EOPNOTSUPP;
4027
4028 err = devlink_resources_validate(devlink, NULL, info);
4029 if (err) {
4030 NL_SET_ERR_MSG_MOD(info->extack, "resources size validation failed");
4031 return err;
4032 }
4033
4034 if (info->attrs[DEVLINK_ATTR_NETNS_PID] ||
4035 info->attrs[DEVLINK_ATTR_NETNS_FD] ||
4036 info->attrs[DEVLINK_ATTR_NETNS_ID]) {
4037 dest_net = devlink_netns_get(skb, info);
4038 if (IS_ERR(dest_net))
4039 return PTR_ERR(dest_net);
4040 }
4041
4042 if (info->attrs[DEVLINK_ATTR_RELOAD_ACTION])
4043 action = nla_get_u8(info->attrs[DEVLINK_ATTR_RELOAD_ACTION]);
4044 else
4045 action = DEVLINK_RELOAD_ACTION_DRIVER_REINIT;
4046
4047 if (!devlink_reload_action_is_supported(devlink, action)) {
4048 NL_SET_ERR_MSG_MOD(info->extack,
4049 "Requested reload action is not supported by the driver");
4050 return -EOPNOTSUPP;
4051 }
4052
4053 limit = DEVLINK_RELOAD_LIMIT_UNSPEC;
4054 if (info->attrs[DEVLINK_ATTR_RELOAD_LIMITS]) {
4055 struct nla_bitfield32 limits;
4056 u32 limits_selected;
4057
4058 limits = nla_get_bitfield32(info->attrs[DEVLINK_ATTR_RELOAD_LIMITS]);
4059 limits_selected = limits.value & limits.selector;
4060 if (!limits_selected) {
4061 NL_SET_ERR_MSG_MOD(info->extack, "Invalid limit selected");
4062 return -EINVAL;
4063 }
4064 for (limit = 0 ; limit <= DEVLINK_RELOAD_LIMIT_MAX ; limit++)
4065 if (limits_selected & BIT(limit))
4066 break;
4067
4068 if (limits_selected != BIT(limit)) {
4069 NL_SET_ERR_MSG_MOD(info->extack,
4070 "Multiselection of limit is not supported");
4071 return -EOPNOTSUPP;
4072 }
4073 if (!devlink_reload_limit_is_supported(devlink, limit)) {
4074 NL_SET_ERR_MSG_MOD(info->extack,
4075 "Requested limit is not supported by the driver");
4076 return -EOPNOTSUPP;
4077 }
4078 if (devlink_reload_combination_is_invalid(action, limit)) {
4079 NL_SET_ERR_MSG_MOD(info->extack,
4080 "Requested limit is invalid for this action");
4081 return -EINVAL;
4082 }
4083 }
4084 err = devlink_reload(devlink, dest_net, action, limit, &actions_performed, info->extack);
4085
4086 if (dest_net)
4087 put_net(dest_net);
4088
4089 if (err)
4090 return err;
4091
4092 if (!info->attrs[DEVLINK_ATTR_RELOAD_ACTION] && !info->attrs[DEVLINK_ATTR_RELOAD_LIMITS])
4093 return 0;
4094
4095 return devlink_nl_reload_actions_performed_snd(devlink, actions_performed,
4096 DEVLINK_CMD_RELOAD, info);
4097}
4098
4099static int devlink_nl_flash_update_fill(struct sk_buff *msg,
4100 struct devlink *devlink,
4101 enum devlink_command cmd,
4102 struct devlink_flash_notify *params)
4103{
4104 void *hdr;
4105
4106 hdr = genlmsg_put(msg, 0, 0, &devlink_nl_family, 0, cmd);
4107 if (!hdr)
4108 return -EMSGSIZE;
4109
4110 if (devlink_nl_put_handle(msg, devlink))
4111 goto nla_put_failure;
4112
4113 if (cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS)
4114 goto out;
4115
4116 if (params->status_msg &&
4117 nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_MSG,
4118 params->status_msg))
4119 goto nla_put_failure;
4120 if (params->component &&
4121 nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_COMPONENT,
4122 params->component))
4123 goto nla_put_failure;
4124 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_DONE,
4125 params->done, DEVLINK_ATTR_PAD))
4126 goto nla_put_failure;
4127 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TOTAL,
4128 params->total, DEVLINK_ATTR_PAD))
4129 goto nla_put_failure;
4130 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TIMEOUT,
4131 params->timeout, DEVLINK_ATTR_PAD))
4132 goto nla_put_failure;
4133
4134out:
4135 genlmsg_end(msg, hdr);
4136 return 0;
4137
4138nla_put_failure:
4139 genlmsg_cancel(msg, hdr);
4140 return -EMSGSIZE;
4141}
4142
4143static void __devlink_flash_update_notify(struct devlink *devlink,
4144 enum devlink_command cmd,
4145 struct devlink_flash_notify *params)
4146{
4147 struct sk_buff *msg;
4148 int err;
4149
4150 WARN_ON(cmd != DEVLINK_CMD_FLASH_UPDATE &&
4151 cmd != DEVLINK_CMD_FLASH_UPDATE_END &&
4152 cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS);
4153
4154 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4155 if (!msg)
4156 return;
4157
4158 err = devlink_nl_flash_update_fill(msg, devlink, cmd, params);
4159 if (err)
4160 goto out_free_msg;
4161
4162 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
4163 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
4164 return;
4165
4166out_free_msg:
4167 nlmsg_free(msg);
4168}
4169
4170static void devlink_flash_update_begin_notify(struct devlink *devlink)
4171{
4172 struct devlink_flash_notify params = {};
4173
4174 __devlink_flash_update_notify(devlink,
4175 DEVLINK_CMD_FLASH_UPDATE,
4176 ¶ms);
4177}
4178
4179static void devlink_flash_update_end_notify(struct devlink *devlink)
4180{
4181 struct devlink_flash_notify params = {};
4182
4183 __devlink_flash_update_notify(devlink,
4184 DEVLINK_CMD_FLASH_UPDATE_END,
4185 ¶ms);
4186}
4187
4188void devlink_flash_update_status_notify(struct devlink *devlink,
4189 const char *status_msg,
4190 const char *component,
4191 unsigned long done,
4192 unsigned long total)
4193{
4194 struct devlink_flash_notify params = {
4195 .status_msg = status_msg,
4196 .component = component,
4197 .done = done,
4198 .total = total,
4199 };
4200
4201 __devlink_flash_update_notify(devlink,
4202 DEVLINK_CMD_FLASH_UPDATE_STATUS,
4203 ¶ms);
4204}
4205EXPORT_SYMBOL_GPL(devlink_flash_update_status_notify);
4206
4207void devlink_flash_update_timeout_notify(struct devlink *devlink,
4208 const char *status_msg,
4209 const char *component,
4210 unsigned long timeout)
4211{
4212 struct devlink_flash_notify params = {
4213 .status_msg = status_msg,
4214 .component = component,
4215 .timeout = timeout,
4216 };
4217
4218 __devlink_flash_update_notify(devlink,
4219 DEVLINK_CMD_FLASH_UPDATE_STATUS,
4220 ¶ms);
4221}
4222EXPORT_SYMBOL_GPL(devlink_flash_update_timeout_notify);
4223
4224static int devlink_nl_cmd_flash_update(struct sk_buff *skb,
4225 struct genl_info *info)
4226{
4227 struct nlattr *nla_component, *nla_overwrite_mask, *nla_file_name;
4228 struct devlink_flash_update_params params = {};
4229 struct devlink *devlink = info->user_ptr[0];
4230 const char *file_name;
4231 u32 supported_params;
4232 int ret;
4233
4234 if (!devlink->ops->flash_update)
4235 return -EOPNOTSUPP;
4236
4237 if (!info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME])
4238 return -EINVAL;
4239
4240 supported_params = devlink->ops->supported_flash_update_params;
4241
4242 nla_component = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_COMPONENT];
4243 if (nla_component) {
4244 if (!(supported_params & DEVLINK_SUPPORT_FLASH_UPDATE_COMPONENT)) {
4245 NL_SET_ERR_MSG_ATTR(info->extack, nla_component,
4246 "component update is not supported by this device");
4247 return -EOPNOTSUPP;
4248 }
4249 params.component = nla_data(nla_component);
4250 }
4251
4252 nla_overwrite_mask = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_OVERWRITE_MASK];
4253 if (nla_overwrite_mask) {
4254 struct nla_bitfield32 sections;
4255
4256 if (!(supported_params & DEVLINK_SUPPORT_FLASH_UPDATE_OVERWRITE_MASK)) {
4257 NL_SET_ERR_MSG_ATTR(info->extack, nla_overwrite_mask,
4258 "overwrite settings are not supported by this device");
4259 return -EOPNOTSUPP;
4260 }
4261 sections = nla_get_bitfield32(nla_overwrite_mask);
4262 params.overwrite_mask = sections.value & sections.selector;
4263 }
4264
4265 nla_file_name = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME];
4266 file_name = nla_data(nla_file_name);
4267 ret = request_firmware(¶ms.fw, file_name, devlink->dev);
4268 if (ret) {
4269 NL_SET_ERR_MSG_ATTR(info->extack, nla_file_name, "failed to locate the requested firmware file");
4270 return ret;
4271 }
4272
4273 devlink_flash_update_begin_notify(devlink);
4274 ret = devlink->ops->flash_update(devlink, ¶ms, info->extack);
4275 devlink_flash_update_end_notify(devlink);
4276
4277 release_firmware(params.fw);
4278
4279 return ret;
4280}
4281
4282static const struct devlink_param devlink_param_generic[] = {
4283 {
4284 .id = DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET,
4285 .name = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_NAME,
4286 .type = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_TYPE,
4287 },
4288 {
4289 .id = DEVLINK_PARAM_GENERIC_ID_MAX_MACS,
4290 .name = DEVLINK_PARAM_GENERIC_MAX_MACS_NAME,
4291 .type = DEVLINK_PARAM_GENERIC_MAX_MACS_TYPE,
4292 },
4293 {
4294 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_SRIOV,
4295 .name = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_NAME,
4296 .type = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_TYPE,
4297 },
4298 {
4299 .id = DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT,
4300 .name = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_NAME,
4301 .type = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_TYPE,
4302 },
4303 {
4304 .id = DEVLINK_PARAM_GENERIC_ID_IGNORE_ARI,
4305 .name = DEVLINK_PARAM_GENERIC_IGNORE_ARI_NAME,
4306 .type = DEVLINK_PARAM_GENERIC_IGNORE_ARI_TYPE,
4307 },
4308 {
4309 .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX,
4310 .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_NAME,
4311 .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_TYPE,
4312 },
4313 {
4314 .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN,
4315 .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_NAME,
4316 .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_TYPE,
4317 },
4318 {
4319 .id = DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY,
4320 .name = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_NAME,
4321 .type = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_TYPE,
4322 },
4323 {
4324 .id = DEVLINK_PARAM_GENERIC_ID_RESET_DEV_ON_DRV_PROBE,
4325 .name = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_NAME,
4326 .type = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_TYPE,
4327 },
4328 {
4329 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_ROCE,
4330 .name = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_NAME,
4331 .type = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_TYPE,
4332 },
4333 {
4334 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_REMOTE_DEV_RESET,
4335 .name = DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_NAME,
4336 .type = DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_TYPE,
4337 },
4338 {
4339 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_ETH,
4340 .name = DEVLINK_PARAM_GENERIC_ENABLE_ETH_NAME,
4341 .type = DEVLINK_PARAM_GENERIC_ENABLE_ETH_TYPE,
4342 },
4343 {
4344 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_RDMA,
4345 .name = DEVLINK_PARAM_GENERIC_ENABLE_RDMA_NAME,
4346 .type = DEVLINK_PARAM_GENERIC_ENABLE_RDMA_TYPE,
4347 },
4348 {
4349 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_VNET,
4350 .name = DEVLINK_PARAM_GENERIC_ENABLE_VNET_NAME,
4351 .type = DEVLINK_PARAM_GENERIC_ENABLE_VNET_TYPE,
4352 },
4353};
4354
4355static int devlink_param_generic_verify(const struct devlink_param *param)
4356{
4357
4358 if (param->id > DEVLINK_PARAM_GENERIC_ID_MAX)
4359 return -EINVAL;
4360 if (strcmp(param->name, devlink_param_generic[param->id].name))
4361 return -ENOENT;
4362
4363 WARN_ON(param->type != devlink_param_generic[param->id].type);
4364
4365 return 0;
4366}
4367
4368static int devlink_param_driver_verify(const struct devlink_param *param)
4369{
4370 int i;
4371
4372 if (param->id <= DEVLINK_PARAM_GENERIC_ID_MAX)
4373 return -EINVAL;
4374
4375 for (i = 0; i <= DEVLINK_PARAM_GENERIC_ID_MAX; i++)
4376 if (!strcmp(param->name, devlink_param_generic[i].name))
4377 return -EEXIST;
4378
4379 return 0;
4380}
4381
4382static struct devlink_param_item *
4383devlink_param_find_by_name(struct list_head *param_list,
4384 const char *param_name)
4385{
4386 struct devlink_param_item *param_item;
4387
4388 list_for_each_entry(param_item, param_list, list)
4389 if (!strcmp(param_item->param->name, param_name))
4390 return param_item;
4391 return NULL;
4392}
4393
4394static struct devlink_param_item *
4395devlink_param_find_by_id(struct list_head *param_list, u32 param_id)
4396{
4397 struct devlink_param_item *param_item;
4398
4399 list_for_each_entry(param_item, param_list, list)
4400 if (param_item->param->id == param_id)
4401 return param_item;
4402 return NULL;
4403}
4404
4405static bool
4406devlink_param_cmode_is_supported(const struct devlink_param *param,
4407 enum devlink_param_cmode cmode)
4408{
4409 return test_bit(cmode, ¶m->supported_cmodes);
4410}
4411
4412static int devlink_param_get(struct devlink *devlink,
4413 const struct devlink_param *param,
4414 struct devlink_param_gset_ctx *ctx)
4415{
4416 if (!param->get)
4417 return -EOPNOTSUPP;
4418 return param->get(devlink, param->id, ctx);
4419}
4420
4421static int devlink_param_set(struct devlink *devlink,
4422 const struct devlink_param *param,
4423 struct devlink_param_gset_ctx *ctx)
4424{
4425 if (!param->set)
4426 return -EOPNOTSUPP;
4427 return param->set(devlink, param->id, ctx);
4428}
4429
4430static int
4431devlink_param_type_to_nla_type(enum devlink_param_type param_type)
4432{
4433 switch (param_type) {
4434 case DEVLINK_PARAM_TYPE_U8:
4435 return NLA_U8;
4436 case DEVLINK_PARAM_TYPE_U16:
4437 return NLA_U16;
4438 case DEVLINK_PARAM_TYPE_U32:
4439 return NLA_U32;
4440 case DEVLINK_PARAM_TYPE_STRING:
4441 return NLA_STRING;
4442 case DEVLINK_PARAM_TYPE_BOOL:
4443 return NLA_FLAG;
4444 default:
4445 return -EINVAL;
4446 }
4447}
4448
4449static int
4450devlink_nl_param_value_fill_one(struct sk_buff *msg,
4451 enum devlink_param_type type,
4452 enum devlink_param_cmode cmode,
4453 union devlink_param_value val)
4454{
4455 struct nlattr *param_value_attr;
4456
4457 param_value_attr = nla_nest_start_noflag(msg,
4458 DEVLINK_ATTR_PARAM_VALUE);
4459 if (!param_value_attr)
4460 goto nla_put_failure;
4461
4462 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_CMODE, cmode))
4463 goto value_nest_cancel;
4464
4465 switch (type) {
4466 case DEVLINK_PARAM_TYPE_U8:
4467 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu8))
4468 goto value_nest_cancel;
4469 break;
4470 case DEVLINK_PARAM_TYPE_U16:
4471 if (nla_put_u16(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu16))
4472 goto value_nest_cancel;
4473 break;
4474 case DEVLINK_PARAM_TYPE_U32:
4475 if (nla_put_u32(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu32))
4476 goto value_nest_cancel;
4477 break;
4478 case DEVLINK_PARAM_TYPE_STRING:
4479 if (nla_put_string(msg, DEVLINK_ATTR_PARAM_VALUE_DATA,
4480 val.vstr))
4481 goto value_nest_cancel;
4482 break;
4483 case DEVLINK_PARAM_TYPE_BOOL:
4484 if (val.vbool &&
4485 nla_put_flag(msg, DEVLINK_ATTR_PARAM_VALUE_DATA))
4486 goto value_nest_cancel;
4487 break;
4488 }
4489
4490 nla_nest_end(msg, param_value_attr);
4491 return 0;
4492
4493value_nest_cancel:
4494 nla_nest_cancel(msg, param_value_attr);
4495nla_put_failure:
4496 return -EMSGSIZE;
4497}
4498
4499static int devlink_nl_param_fill(struct sk_buff *msg, struct devlink *devlink,
4500 unsigned int port_index,
4501 struct devlink_param_item *param_item,
4502 enum devlink_command cmd,
4503 u32 portid, u32 seq, int flags)
4504{
4505 union devlink_param_value param_value[DEVLINK_PARAM_CMODE_MAX + 1];
4506 bool param_value_set[DEVLINK_PARAM_CMODE_MAX + 1] = {};
4507 const struct devlink_param *param = param_item->param;
4508 struct devlink_param_gset_ctx ctx;
4509 struct nlattr *param_values_list;
4510 struct nlattr *param_attr;
4511 int nla_type;
4512 void *hdr;
4513 int err;
4514 int i;
4515
4516
4517 for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
4518 if (!devlink_param_cmode_is_supported(param, i))
4519 continue;
4520 if (i == DEVLINK_PARAM_CMODE_DRIVERINIT) {
4521 if (!param_item->driverinit_value_valid)
4522 return -EOPNOTSUPP;
4523 param_value[i] = param_item->driverinit_value;
4524 } else {
4525 if (!param_item->published)
4526 continue;
4527 ctx.cmode = i;
4528 err = devlink_param_get(devlink, param, &ctx);
4529 if (err)
4530 return err;
4531 param_value[i] = ctx.val;
4532 }
4533 param_value_set[i] = true;
4534 }
4535
4536 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
4537 if (!hdr)
4538 return -EMSGSIZE;
4539
4540 if (devlink_nl_put_handle(msg, devlink))
4541 goto genlmsg_cancel;
4542
4543 if (cmd == DEVLINK_CMD_PORT_PARAM_GET ||
4544 cmd == DEVLINK_CMD_PORT_PARAM_NEW ||
4545 cmd == DEVLINK_CMD_PORT_PARAM_DEL)
4546 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, port_index))
4547 goto genlmsg_cancel;
4548
4549 param_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PARAM);
4550 if (!param_attr)
4551 goto genlmsg_cancel;
4552 if (nla_put_string(msg, DEVLINK_ATTR_PARAM_NAME, param->name))
4553 goto param_nest_cancel;
4554 if (param->generic && nla_put_flag(msg, DEVLINK_ATTR_PARAM_GENERIC))
4555 goto param_nest_cancel;
4556
4557 nla_type = devlink_param_type_to_nla_type(param->type);
4558 if (nla_type < 0)
4559 goto param_nest_cancel;
4560 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_TYPE, nla_type))
4561 goto param_nest_cancel;
4562
4563 param_values_list = nla_nest_start_noflag(msg,
4564 DEVLINK_ATTR_PARAM_VALUES_LIST);
4565 if (!param_values_list)
4566 goto param_nest_cancel;
4567
4568 for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
4569 if (!param_value_set[i])
4570 continue;
4571 err = devlink_nl_param_value_fill_one(msg, param->type,
4572 i, param_value[i]);
4573 if (err)
4574 goto values_list_nest_cancel;
4575 }
4576
4577 nla_nest_end(msg, param_values_list);
4578 nla_nest_end(msg, param_attr);
4579 genlmsg_end(msg, hdr);
4580 return 0;
4581
4582values_list_nest_cancel:
4583 nla_nest_end(msg, param_values_list);
4584param_nest_cancel:
4585 nla_nest_cancel(msg, param_attr);
4586genlmsg_cancel:
4587 genlmsg_cancel(msg, hdr);
4588 return -EMSGSIZE;
4589}
4590
4591static void devlink_param_notify(struct devlink *devlink,
4592 unsigned int port_index,
4593 struct devlink_param_item *param_item,
4594 enum devlink_command cmd)
4595{
4596 struct sk_buff *msg;
4597 int err;
4598
4599 WARN_ON(cmd != DEVLINK_CMD_PARAM_NEW && cmd != DEVLINK_CMD_PARAM_DEL &&
4600 cmd != DEVLINK_CMD_PORT_PARAM_NEW &&
4601 cmd != DEVLINK_CMD_PORT_PARAM_DEL);
4602
4603 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4604 if (!msg)
4605 return;
4606 err = devlink_nl_param_fill(msg, devlink, port_index, param_item, cmd,
4607 0, 0, 0);
4608 if (err) {
4609 nlmsg_free(msg);
4610 return;
4611 }
4612
4613 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
4614 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
4615}
4616
4617static int devlink_nl_cmd_param_get_dumpit(struct sk_buff *msg,
4618 struct netlink_callback *cb)
4619{
4620 struct devlink_param_item *param_item;
4621 struct devlink *devlink;
4622 int start = cb->args[0];
4623 unsigned long index;
4624 int idx = 0;
4625 int err = 0;
4626
4627 mutex_lock(&devlink_mutex);
4628 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
4629 if (!devlink_try_get(devlink))
4630 continue;
4631
4632 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
4633 goto retry;
4634
4635 mutex_lock(&devlink->lock);
4636 list_for_each_entry(param_item, &devlink->param_list, list) {
4637 if (idx < start) {
4638 idx++;
4639 continue;
4640 }
4641 err = devlink_nl_param_fill(msg, devlink, 0, param_item,
4642 DEVLINK_CMD_PARAM_GET,
4643 NETLINK_CB(cb->skb).portid,
4644 cb->nlh->nlmsg_seq,
4645 NLM_F_MULTI);
4646 if (err == -EOPNOTSUPP) {
4647 err = 0;
4648 } else if (err) {
4649 mutex_unlock(&devlink->lock);
4650 devlink_put(devlink);
4651 goto out;
4652 }
4653 idx++;
4654 }
4655 mutex_unlock(&devlink->lock);
4656retry:
4657 devlink_put(devlink);
4658 }
4659out:
4660 mutex_unlock(&devlink_mutex);
4661
4662 if (err != -EMSGSIZE)
4663 return err;
4664
4665 cb->args[0] = idx;
4666 return msg->len;
4667}
4668
4669static int
4670devlink_param_type_get_from_info(struct genl_info *info,
4671 enum devlink_param_type *param_type)
4672{
4673 if (!info->attrs[DEVLINK_ATTR_PARAM_TYPE])
4674 return -EINVAL;
4675
4676 switch (nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_TYPE])) {
4677 case NLA_U8:
4678 *param_type = DEVLINK_PARAM_TYPE_U8;
4679 break;
4680 case NLA_U16:
4681 *param_type = DEVLINK_PARAM_TYPE_U16;
4682 break;
4683 case NLA_U32:
4684 *param_type = DEVLINK_PARAM_TYPE_U32;
4685 break;
4686 case NLA_STRING:
4687 *param_type = DEVLINK_PARAM_TYPE_STRING;
4688 break;
4689 case NLA_FLAG:
4690 *param_type = DEVLINK_PARAM_TYPE_BOOL;
4691 break;
4692 default:
4693 return -EINVAL;
4694 }
4695
4696 return 0;
4697}
4698
4699static int
4700devlink_param_value_get_from_info(const struct devlink_param *param,
4701 struct genl_info *info,
4702 union devlink_param_value *value)
4703{
4704 struct nlattr *param_data;
4705 int len;
4706
4707 param_data = info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA];
4708
4709 if (param->type != DEVLINK_PARAM_TYPE_BOOL && !param_data)
4710 return -EINVAL;
4711
4712 switch (param->type) {
4713 case DEVLINK_PARAM_TYPE_U8:
4714 if (nla_len(param_data) != sizeof(u8))
4715 return -EINVAL;
4716 value->vu8 = nla_get_u8(param_data);
4717 break;
4718 case DEVLINK_PARAM_TYPE_U16:
4719 if (nla_len(param_data) != sizeof(u16))
4720 return -EINVAL;
4721 value->vu16 = nla_get_u16(param_data);
4722 break;
4723 case DEVLINK_PARAM_TYPE_U32:
4724 if (nla_len(param_data) != sizeof(u32))
4725 return -EINVAL;
4726 value->vu32 = nla_get_u32(param_data);
4727 break;
4728 case DEVLINK_PARAM_TYPE_STRING:
4729 len = strnlen(nla_data(param_data), nla_len(param_data));
4730 if (len == nla_len(param_data) ||
4731 len >= __DEVLINK_PARAM_MAX_STRING_VALUE)
4732 return -EINVAL;
4733 strcpy(value->vstr, nla_data(param_data));
4734 break;
4735 case DEVLINK_PARAM_TYPE_BOOL:
4736 if (param_data && nla_len(param_data))
4737 return -EINVAL;
4738 value->vbool = nla_get_flag(param_data);
4739 break;
4740 }
4741 return 0;
4742}
4743
4744static struct devlink_param_item *
4745devlink_param_get_from_info(struct list_head *param_list,
4746 struct genl_info *info)
4747{
4748 char *param_name;
4749
4750 if (!info->attrs[DEVLINK_ATTR_PARAM_NAME])
4751 return NULL;
4752
4753 param_name = nla_data(info->attrs[DEVLINK_ATTR_PARAM_NAME]);
4754 return devlink_param_find_by_name(param_list, param_name);
4755}
4756
4757static int devlink_nl_cmd_param_get_doit(struct sk_buff *skb,
4758 struct genl_info *info)
4759{
4760 struct devlink *devlink = info->user_ptr[0];
4761 struct devlink_param_item *param_item;
4762 struct sk_buff *msg;
4763 int err;
4764
4765 param_item = devlink_param_get_from_info(&devlink->param_list, info);
4766 if (!param_item)
4767 return -EINVAL;
4768
4769 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4770 if (!msg)
4771 return -ENOMEM;
4772
4773 err = devlink_nl_param_fill(msg, devlink, 0, param_item,
4774 DEVLINK_CMD_PARAM_GET,
4775 info->snd_portid, info->snd_seq, 0);
4776 if (err) {
4777 nlmsg_free(msg);
4778 return err;
4779 }
4780
4781 return genlmsg_reply(msg, info);
4782}
4783
4784static int __devlink_nl_cmd_param_set_doit(struct devlink *devlink,
4785 unsigned int port_index,
4786 struct list_head *param_list,
4787 struct genl_info *info,
4788 enum devlink_command cmd)
4789{
4790 enum devlink_param_type param_type;
4791 struct devlink_param_gset_ctx ctx;
4792 enum devlink_param_cmode cmode;
4793 struct devlink_param_item *param_item;
4794 const struct devlink_param *param;
4795 union devlink_param_value value;
4796 int err = 0;
4797
4798 param_item = devlink_param_get_from_info(param_list, info);
4799 if (!param_item)
4800 return -EINVAL;
4801 param = param_item->param;
4802 err = devlink_param_type_get_from_info(info, ¶m_type);
4803 if (err)
4804 return err;
4805 if (param_type != param->type)
4806 return -EINVAL;
4807 err = devlink_param_value_get_from_info(param, info, &value);
4808 if (err)
4809 return err;
4810 if (param->validate) {
4811 err = param->validate(devlink, param->id, value, info->extack);
4812 if (err)
4813 return err;
4814 }
4815
4816 if (!info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE])
4817 return -EINVAL;
4818 cmode = nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE]);
4819 if (!devlink_param_cmode_is_supported(param, cmode))
4820 return -EOPNOTSUPP;
4821
4822 if (cmode == DEVLINK_PARAM_CMODE_DRIVERINIT) {
4823 if (param->type == DEVLINK_PARAM_TYPE_STRING)
4824 strcpy(param_item->driverinit_value.vstr, value.vstr);
4825 else
4826 param_item->driverinit_value = value;
4827 param_item->driverinit_value_valid = true;
4828 } else {
4829 if (!param->set)
4830 return -EOPNOTSUPP;
4831 ctx.val = value;
4832 ctx.cmode = cmode;
4833 err = devlink_param_set(devlink, param, &ctx);
4834 if (err)
4835 return err;
4836 }
4837
4838 devlink_param_notify(devlink, port_index, param_item, cmd);
4839 return 0;
4840}
4841
4842static int devlink_nl_cmd_param_set_doit(struct sk_buff *skb,
4843 struct genl_info *info)
4844{
4845 struct devlink *devlink = info->user_ptr[0];
4846
4847 return __devlink_nl_cmd_param_set_doit(devlink, 0, &devlink->param_list,
4848 info, DEVLINK_CMD_PARAM_NEW);
4849}
4850
4851static int devlink_param_register_one(struct devlink *devlink,
4852 unsigned int port_index,
4853 struct list_head *param_list,
4854 const struct devlink_param *param,
4855 enum devlink_command cmd)
4856{
4857 struct devlink_param_item *param_item;
4858
4859 if (devlink_param_find_by_name(param_list, param->name))
4860 return -EEXIST;
4861
4862 if (param->supported_cmodes == BIT(DEVLINK_PARAM_CMODE_DRIVERINIT))
4863 WARN_ON(param->get || param->set);
4864 else
4865 WARN_ON(!param->get || !param->set);
4866
4867 param_item = kzalloc(sizeof(*param_item), GFP_KERNEL);
4868 if (!param_item)
4869 return -ENOMEM;
4870 param_item->param = param;
4871
4872 list_add_tail(¶m_item->list, param_list);
4873 devlink_param_notify(devlink, port_index, param_item, cmd);
4874 return 0;
4875}
4876
4877static void devlink_param_unregister_one(struct devlink *devlink,
4878 unsigned int port_index,
4879 struct list_head *param_list,
4880 const struct devlink_param *param,
4881 enum devlink_command cmd)
4882{
4883 struct devlink_param_item *param_item;
4884
4885 param_item = devlink_param_find_by_name(param_list, param->name);
4886 WARN_ON(!param_item);
4887 devlink_param_notify(devlink, port_index, param_item, cmd);
4888 list_del(¶m_item->list);
4889 kfree(param_item);
4890}
4891
4892static int devlink_nl_cmd_port_param_get_dumpit(struct sk_buff *msg,
4893 struct netlink_callback *cb)
4894{
4895 struct devlink_param_item *param_item;
4896 struct devlink_port *devlink_port;
4897 struct devlink *devlink;
4898 int start = cb->args[0];
4899 unsigned long index;
4900 int idx = 0;
4901 int err = 0;
4902
4903 mutex_lock(&devlink_mutex);
4904 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
4905 if (!devlink_try_get(devlink))
4906 continue;
4907
4908 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
4909 goto retry;
4910
4911 mutex_lock(&devlink->lock);
4912 list_for_each_entry(devlink_port, &devlink->port_list, list) {
4913 list_for_each_entry(param_item,
4914 &devlink_port->param_list, list) {
4915 if (idx < start) {
4916 idx++;
4917 continue;
4918 }
4919 err = devlink_nl_param_fill(msg,
4920 devlink_port->devlink,
4921 devlink_port->index, param_item,
4922 DEVLINK_CMD_PORT_PARAM_GET,
4923 NETLINK_CB(cb->skb).portid,
4924 cb->nlh->nlmsg_seq,
4925 NLM_F_MULTI);
4926 if (err == -EOPNOTSUPP) {
4927 err = 0;
4928 } else if (err) {
4929 mutex_unlock(&devlink->lock);
4930 devlink_put(devlink);
4931 goto out;
4932 }
4933 idx++;
4934 }
4935 }
4936 mutex_unlock(&devlink->lock);
4937retry:
4938 devlink_put(devlink);
4939 }
4940out:
4941 mutex_unlock(&devlink_mutex);
4942
4943 if (err != -EMSGSIZE)
4944 return err;
4945
4946 cb->args[0] = idx;
4947 return msg->len;
4948}
4949
4950static int devlink_nl_cmd_port_param_get_doit(struct sk_buff *skb,
4951 struct genl_info *info)
4952{
4953 struct devlink_port *devlink_port = info->user_ptr[1];
4954 struct devlink_param_item *param_item;
4955 struct sk_buff *msg;
4956 int err;
4957
4958 param_item = devlink_param_get_from_info(&devlink_port->param_list,
4959 info);
4960 if (!param_item)
4961 return -EINVAL;
4962
4963 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4964 if (!msg)
4965 return -ENOMEM;
4966
4967 err = devlink_nl_param_fill(msg, devlink_port->devlink,
4968 devlink_port->index, param_item,
4969 DEVLINK_CMD_PORT_PARAM_GET,
4970 info->snd_portid, info->snd_seq, 0);
4971 if (err) {
4972 nlmsg_free(msg);
4973 return err;
4974 }
4975
4976 return genlmsg_reply(msg, info);
4977}
4978
4979static int devlink_nl_cmd_port_param_set_doit(struct sk_buff *skb,
4980 struct genl_info *info)
4981{
4982 struct devlink_port *devlink_port = info->user_ptr[1];
4983
4984 return __devlink_nl_cmd_param_set_doit(devlink_port->devlink,
4985 devlink_port->index,
4986 &devlink_port->param_list, info,
4987 DEVLINK_CMD_PORT_PARAM_NEW);
4988}
4989
4990static int devlink_nl_region_snapshot_id_put(struct sk_buff *msg,
4991 struct devlink *devlink,
4992 struct devlink_snapshot *snapshot)
4993{
4994 struct nlattr *snap_attr;
4995 int err;
4996
4997 snap_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_SNAPSHOT);
4998 if (!snap_attr)
4999 return -EINVAL;
5000
5001 err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID, snapshot->id);
5002 if (err)
5003 goto nla_put_failure;
5004
5005 nla_nest_end(msg, snap_attr);
5006 return 0;
5007
5008nla_put_failure:
5009 nla_nest_cancel(msg, snap_attr);
5010 return err;
5011}
5012
5013static int devlink_nl_region_snapshots_id_put(struct sk_buff *msg,
5014 struct devlink *devlink,
5015 struct devlink_region *region)
5016{
5017 struct devlink_snapshot *snapshot;
5018 struct nlattr *snapshots_attr;
5019 int err;
5020
5021 snapshots_attr = nla_nest_start_noflag(msg,
5022 DEVLINK_ATTR_REGION_SNAPSHOTS);
5023 if (!snapshots_attr)
5024 return -EINVAL;
5025
5026 list_for_each_entry(snapshot, ®ion->snapshot_list, list) {
5027 err = devlink_nl_region_snapshot_id_put(msg, devlink, snapshot);
5028 if (err)
5029 goto nla_put_failure;
5030 }
5031
5032 nla_nest_end(msg, snapshots_attr);
5033 return 0;
5034
5035nla_put_failure:
5036 nla_nest_cancel(msg, snapshots_attr);
5037 return err;
5038}
5039
5040static int devlink_nl_region_fill(struct sk_buff *msg, struct devlink *devlink,
5041 enum devlink_command cmd, u32 portid,
5042 u32 seq, int flags,
5043 struct devlink_region *region)
5044{
5045 void *hdr;
5046 int err;
5047
5048 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
5049 if (!hdr)
5050 return -EMSGSIZE;
5051
5052 err = devlink_nl_put_handle(msg, devlink);
5053 if (err)
5054 goto nla_put_failure;
5055
5056 if (region->port) {
5057 err = nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
5058 region->port->index);
5059 if (err)
5060 goto nla_put_failure;
5061 }
5062
5063 err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME, region->ops->name);
5064 if (err)
5065 goto nla_put_failure;
5066
5067 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
5068 region->size,
5069 DEVLINK_ATTR_PAD);
5070 if (err)
5071 goto nla_put_failure;
5072
5073 err = devlink_nl_region_snapshots_id_put(msg, devlink, region);
5074 if (err)
5075 goto nla_put_failure;
5076
5077 genlmsg_end(msg, hdr);
5078 return 0;
5079
5080nla_put_failure:
5081 genlmsg_cancel(msg, hdr);
5082 return err;
5083}
5084
5085static struct sk_buff *
5086devlink_nl_region_notify_build(struct devlink_region *region,
5087 struct devlink_snapshot *snapshot,
5088 enum devlink_command cmd, u32 portid, u32 seq)
5089{
5090 struct devlink *devlink = region->devlink;
5091 struct sk_buff *msg;
5092 void *hdr;
5093 int err;
5094
5095
5096 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5097 if (!msg)
5098 return ERR_PTR(-ENOMEM);
5099
5100 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, 0, cmd);
5101 if (!hdr) {
5102 err = -EMSGSIZE;
5103 goto out_free_msg;
5104 }
5105
5106 err = devlink_nl_put_handle(msg, devlink);
5107 if (err)
5108 goto out_cancel_msg;
5109
5110 if (region->port) {
5111 err = nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
5112 region->port->index);
5113 if (err)
5114 goto out_cancel_msg;
5115 }
5116
5117 err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME,
5118 region->ops->name);
5119 if (err)
5120 goto out_cancel_msg;
5121
5122 if (snapshot) {
5123 err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID,
5124 snapshot->id);
5125 if (err)
5126 goto out_cancel_msg;
5127 } else {
5128 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
5129 region->size, DEVLINK_ATTR_PAD);
5130 if (err)
5131 goto out_cancel_msg;
5132 }
5133 genlmsg_end(msg, hdr);
5134
5135 return msg;
5136
5137out_cancel_msg:
5138 genlmsg_cancel(msg, hdr);
5139out_free_msg:
5140 nlmsg_free(msg);
5141 return ERR_PTR(err);
5142}
5143
5144static void devlink_nl_region_notify(struct devlink_region *region,
5145 struct devlink_snapshot *snapshot,
5146 enum devlink_command cmd)
5147{
5148 struct sk_buff *msg;
5149
5150 WARN_ON(cmd != DEVLINK_CMD_REGION_NEW && cmd != DEVLINK_CMD_REGION_DEL);
5151
5152 msg = devlink_nl_region_notify_build(region, snapshot, cmd, 0, 0);
5153 if (IS_ERR(msg))
5154 return;
5155
5156 genlmsg_multicast_netns(&devlink_nl_family,
5157 devlink_net(region->devlink), msg, 0,
5158 DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
5159}
5160
5161
5162
5163
5164
5165
5166
5167
5168
5169
5170
5171
5172
5173
5174
5175
5176static int __devlink_snapshot_id_increment(struct devlink *devlink, u32 id)
5177{
5178 unsigned long count;
5179 void *p;
5180
5181 lockdep_assert_held(&devlink->lock);
5182
5183 p = xa_load(&devlink->snapshot_ids, id);
5184 if (WARN_ON(!p))
5185 return -EINVAL;
5186
5187 if (WARN_ON(!xa_is_value(p)))
5188 return -EINVAL;
5189
5190 count = xa_to_value(p);
5191 count++;
5192
5193 return xa_err(xa_store(&devlink->snapshot_ids, id, xa_mk_value(count),
5194 GFP_KERNEL));
5195}
5196
5197
5198
5199
5200
5201
5202
5203
5204
5205
5206
5207
5208
5209
5210
5211
5212static void __devlink_snapshot_id_decrement(struct devlink *devlink, u32 id)
5213{
5214 unsigned long count;
5215 void *p;
5216
5217 lockdep_assert_held(&devlink->lock);
5218
5219 p = xa_load(&devlink->snapshot_ids, id);
5220 if (WARN_ON(!p))
5221 return;
5222
5223 if (WARN_ON(!xa_is_value(p)))
5224 return;
5225
5226 count = xa_to_value(p);
5227
5228 if (count > 1) {
5229 count--;
5230 xa_store(&devlink->snapshot_ids, id, xa_mk_value(count),
5231 GFP_KERNEL);
5232 } else {
5233
5234 xa_erase(&devlink->snapshot_ids, id);
5235 }
5236}
5237
5238
5239
5240
5241
5242
5243
5244
5245
5246
5247
5248
5249
5250
5251
5252
5253
5254static int __devlink_snapshot_id_insert(struct devlink *devlink, u32 id)
5255{
5256 lockdep_assert_held(&devlink->lock);
5257
5258 if (xa_load(&devlink->snapshot_ids, id))
5259 return -EEXIST;
5260
5261 return xa_err(xa_store(&devlink->snapshot_ids, id, xa_mk_value(0),
5262 GFP_KERNEL));
5263}
5264
5265
5266
5267
5268
5269
5270
5271
5272
5273
5274
5275
5276
5277
5278
5279
5280
5281static int __devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id)
5282{
5283 lockdep_assert_held(&devlink->lock);
5284
5285 return xa_alloc(&devlink->snapshot_ids, id, xa_mk_value(1),
5286 xa_limit_32b, GFP_KERNEL);
5287}
5288
5289
5290
5291
5292
5293
5294
5295
5296
5297
5298
5299
5300
5301
5302
5303static int
5304__devlink_region_snapshot_create(struct devlink_region *region,
5305 u8 *data, u32 snapshot_id)
5306{
5307 struct devlink *devlink = region->devlink;
5308 struct devlink_snapshot *snapshot;
5309 int err;
5310
5311 lockdep_assert_held(&devlink->lock);
5312
5313
5314 if (region->cur_snapshots == region->max_snapshots)
5315 return -ENOSPC;
5316
5317 if (devlink_region_snapshot_get_by_id(region, snapshot_id))
5318 return -EEXIST;
5319
5320 snapshot = kzalloc(sizeof(*snapshot), GFP_KERNEL);
5321 if (!snapshot)
5322 return -ENOMEM;
5323
5324 err = __devlink_snapshot_id_increment(devlink, snapshot_id);
5325 if (err)
5326 goto err_snapshot_id_increment;
5327
5328 snapshot->id = snapshot_id;
5329 snapshot->region = region;
5330 snapshot->data = data;
5331
5332 list_add_tail(&snapshot->list, ®ion->snapshot_list);
5333
5334 region->cur_snapshots++;
5335
5336 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_NEW);
5337 return 0;
5338
5339err_snapshot_id_increment:
5340 kfree(snapshot);
5341 return err;
5342}
5343
5344static void devlink_region_snapshot_del(struct devlink_region *region,
5345 struct devlink_snapshot *snapshot)
5346{
5347 struct devlink *devlink = region->devlink;
5348
5349 lockdep_assert_held(&devlink->lock);
5350
5351 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_DEL);
5352 region->cur_snapshots--;
5353 list_del(&snapshot->list);
5354 region->ops->destructor(snapshot->data);
5355 __devlink_snapshot_id_decrement(devlink, snapshot->id);
5356 kfree(snapshot);
5357}
5358
5359static int devlink_nl_cmd_region_get_doit(struct sk_buff *skb,
5360 struct genl_info *info)
5361{
5362 struct devlink *devlink = info->user_ptr[0];
5363 struct devlink_port *port = NULL;
5364 struct devlink_region *region;
5365 const char *region_name;
5366 struct sk_buff *msg;
5367 unsigned int index;
5368 int err;
5369
5370 if (!info->attrs[DEVLINK_ATTR_REGION_NAME])
5371 return -EINVAL;
5372
5373 if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
5374 index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
5375
5376 port = devlink_port_get_by_index(devlink, index);
5377 if (!port)
5378 return -ENODEV;
5379 }
5380
5381 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
5382 if (port)
5383 region = devlink_port_region_get_by_name(port, region_name);
5384 else
5385 region = devlink_region_get_by_name(devlink, region_name);
5386
5387 if (!region)
5388 return -EINVAL;
5389
5390 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5391 if (!msg)
5392 return -ENOMEM;
5393
5394 err = devlink_nl_region_fill(msg, devlink, DEVLINK_CMD_REGION_GET,
5395 info->snd_portid, info->snd_seq, 0,
5396 region);
5397 if (err) {
5398 nlmsg_free(msg);
5399 return err;
5400 }
5401
5402 return genlmsg_reply(msg, info);
5403}
5404
5405static int devlink_nl_cmd_region_get_port_dumpit(struct sk_buff *msg,
5406 struct netlink_callback *cb,
5407 struct devlink_port *port,
5408 int *idx,
5409 int start)
5410{
5411 struct devlink_region *region;
5412 int err = 0;
5413
5414 list_for_each_entry(region, &port->region_list, list) {
5415 if (*idx < start) {
5416 (*idx)++;
5417 continue;
5418 }
5419 err = devlink_nl_region_fill(msg, port->devlink,
5420 DEVLINK_CMD_REGION_GET,
5421 NETLINK_CB(cb->skb).portid,
5422 cb->nlh->nlmsg_seq,
5423 NLM_F_MULTI, region);
5424 if (err)
5425 goto out;
5426 (*idx)++;
5427 }
5428
5429out:
5430 return err;
5431}
5432
5433static int devlink_nl_cmd_region_get_devlink_dumpit(struct sk_buff *msg,
5434 struct netlink_callback *cb,
5435 struct devlink *devlink,
5436 int *idx,
5437 int start)
5438{
5439 struct devlink_region *region;
5440 struct devlink_port *port;
5441 int err = 0;
5442
5443 mutex_lock(&devlink->lock);
5444 list_for_each_entry(region, &devlink->region_list, list) {
5445 if (*idx < start) {
5446 (*idx)++;
5447 continue;
5448 }
5449 err = devlink_nl_region_fill(msg, devlink,
5450 DEVLINK_CMD_REGION_GET,
5451 NETLINK_CB(cb->skb).portid,
5452 cb->nlh->nlmsg_seq,
5453 NLM_F_MULTI, region);
5454 if (err)
5455 goto out;
5456 (*idx)++;
5457 }
5458
5459 list_for_each_entry(port, &devlink->port_list, list) {
5460 err = devlink_nl_cmd_region_get_port_dumpit(msg, cb, port, idx,
5461 start);
5462 if (err)
5463 goto out;
5464 }
5465
5466out:
5467 mutex_unlock(&devlink->lock);
5468 return err;
5469}
5470
5471static int devlink_nl_cmd_region_get_dumpit(struct sk_buff *msg,
5472 struct netlink_callback *cb)
5473{
5474 struct devlink *devlink;
5475 int start = cb->args[0];
5476 unsigned long index;
5477 int idx = 0;
5478 int err = 0;
5479
5480 mutex_lock(&devlink_mutex);
5481 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
5482 if (!devlink_try_get(devlink))
5483 continue;
5484
5485 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
5486 goto retry;
5487
5488 err = devlink_nl_cmd_region_get_devlink_dumpit(msg, cb, devlink,
5489 &idx, start);
5490retry:
5491 devlink_put(devlink);
5492 if (err)
5493 goto out;
5494 }
5495out:
5496 mutex_unlock(&devlink_mutex);
5497 cb->args[0] = idx;
5498 return msg->len;
5499}
5500
5501static int devlink_nl_cmd_region_del(struct sk_buff *skb,
5502 struct genl_info *info)
5503{
5504 struct devlink *devlink = info->user_ptr[0];
5505 struct devlink_snapshot *snapshot;
5506 struct devlink_port *port = NULL;
5507 struct devlink_region *region;
5508 const char *region_name;
5509 unsigned int index;
5510 u32 snapshot_id;
5511
5512 if (!info->attrs[DEVLINK_ATTR_REGION_NAME] ||
5513 !info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID])
5514 return -EINVAL;
5515
5516 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
5517 snapshot_id = nla_get_u32(info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
5518
5519 if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
5520 index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
5521
5522 port = devlink_port_get_by_index(devlink, index);
5523 if (!port)
5524 return -ENODEV;
5525 }
5526
5527 if (port)
5528 region = devlink_port_region_get_by_name(port, region_name);
5529 else
5530 region = devlink_region_get_by_name(devlink, region_name);
5531
5532 if (!region)
5533 return -EINVAL;
5534
5535 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
5536 if (!snapshot)
5537 return -EINVAL;
5538
5539 devlink_region_snapshot_del(region, snapshot);
5540 return 0;
5541}
5542
5543static int
5544devlink_nl_cmd_region_new(struct sk_buff *skb, struct genl_info *info)
5545{
5546 struct devlink *devlink = info->user_ptr[0];
5547 struct devlink_snapshot *snapshot;
5548 struct devlink_port *port = NULL;
5549 struct nlattr *snapshot_id_attr;
5550 struct devlink_region *region;
5551 const char *region_name;
5552 unsigned int index;
5553 u32 snapshot_id;
5554 u8 *data;
5555 int err;
5556
5557 if (!info->attrs[DEVLINK_ATTR_REGION_NAME]) {
5558 NL_SET_ERR_MSG_MOD(info->extack, "No region name provided");
5559 return -EINVAL;
5560 }
5561
5562 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
5563
5564 if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
5565 index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
5566
5567 port = devlink_port_get_by_index(devlink, index);
5568 if (!port)
5569 return -ENODEV;
5570 }
5571
5572 if (port)
5573 region = devlink_port_region_get_by_name(port, region_name);
5574 else
5575 region = devlink_region_get_by_name(devlink, region_name);
5576
5577 if (!region) {
5578 NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not exist");
5579 return -EINVAL;
5580 }
5581
5582 if (!region->ops->snapshot) {
5583 NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not support taking an immediate snapshot");
5584 return -EOPNOTSUPP;
5585 }
5586
5587 if (region->cur_snapshots == region->max_snapshots) {
5588 NL_SET_ERR_MSG_MOD(info->extack, "The region has reached the maximum number of stored snapshots");
5589 return -ENOSPC;
5590 }
5591
5592 snapshot_id_attr = info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID];
5593 if (snapshot_id_attr) {
5594 snapshot_id = nla_get_u32(snapshot_id_attr);
5595
5596 if (devlink_region_snapshot_get_by_id(region, snapshot_id)) {
5597 NL_SET_ERR_MSG_MOD(info->extack, "The requested snapshot id is already in use");
5598 return -EEXIST;
5599 }
5600
5601 err = __devlink_snapshot_id_insert(devlink, snapshot_id);
5602 if (err)
5603 return err;
5604 } else {
5605 err = __devlink_region_snapshot_id_get(devlink, &snapshot_id);
5606 if (err) {
5607 NL_SET_ERR_MSG_MOD(info->extack, "Failed to allocate a new snapshot id");
5608 return err;
5609 }
5610 }
5611
5612 if (port)
5613 err = region->port_ops->snapshot(port, region->port_ops,
5614 info->extack, &data);
5615 else
5616 err = region->ops->snapshot(devlink, region->ops,
5617 info->extack, &data);
5618 if (err)
5619 goto err_snapshot_capture;
5620
5621 err = __devlink_region_snapshot_create(region, data, snapshot_id);
5622 if (err)
5623 goto err_snapshot_create;
5624
5625 if (!snapshot_id_attr) {
5626 struct sk_buff *msg;
5627
5628 snapshot = devlink_region_snapshot_get_by_id(region,
5629 snapshot_id);
5630 if (WARN_ON(!snapshot))
5631 return -EINVAL;
5632
5633 msg = devlink_nl_region_notify_build(region, snapshot,
5634 DEVLINK_CMD_REGION_NEW,
5635 info->snd_portid,
5636 info->snd_seq);
5637 err = PTR_ERR_OR_ZERO(msg);
5638 if (err)
5639 goto err_notify;
5640
5641 err = genlmsg_reply(msg, info);
5642 if (err)
5643 goto err_notify;
5644 }
5645
5646 return 0;
5647
5648err_snapshot_create:
5649 region->ops->destructor(data);
5650err_snapshot_capture:
5651 __devlink_snapshot_id_decrement(devlink, snapshot_id);
5652 return err;
5653
5654err_notify:
5655 devlink_region_snapshot_del(region, snapshot);
5656 return err;
5657}
5658
5659static int devlink_nl_cmd_region_read_chunk_fill(struct sk_buff *msg,
5660 struct devlink *devlink,
5661 u8 *chunk, u32 chunk_size,
5662 u64 addr)
5663{
5664 struct nlattr *chunk_attr;
5665 int err;
5666
5667 chunk_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_CHUNK);
5668 if (!chunk_attr)
5669 return -EINVAL;
5670
5671 err = nla_put(msg, DEVLINK_ATTR_REGION_CHUNK_DATA, chunk_size, chunk);
5672 if (err)
5673 goto nla_put_failure;
5674
5675 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_CHUNK_ADDR, addr,
5676 DEVLINK_ATTR_PAD);
5677 if (err)
5678 goto nla_put_failure;
5679
5680 nla_nest_end(msg, chunk_attr);
5681 return 0;
5682
5683nla_put_failure:
5684 nla_nest_cancel(msg, chunk_attr);
5685 return err;
5686}
5687
5688#define DEVLINK_REGION_READ_CHUNK_SIZE 256
5689
5690static int devlink_nl_region_read_snapshot_fill(struct sk_buff *skb,
5691 struct devlink *devlink,
5692 struct devlink_region *region,
5693 struct nlattr **attrs,
5694 u64 start_offset,
5695 u64 end_offset,
5696 u64 *new_offset)
5697{
5698 struct devlink_snapshot *snapshot;
5699 u64 curr_offset = start_offset;
5700 u32 snapshot_id;
5701 int err = 0;
5702
5703 *new_offset = start_offset;
5704
5705 snapshot_id = nla_get_u32(attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
5706 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
5707 if (!snapshot)
5708 return -EINVAL;
5709
5710 while (curr_offset < end_offset) {
5711 u32 data_size;
5712 u8 *data;
5713
5714 if (end_offset - curr_offset < DEVLINK_REGION_READ_CHUNK_SIZE)
5715 data_size = end_offset - curr_offset;
5716 else
5717 data_size = DEVLINK_REGION_READ_CHUNK_SIZE;
5718
5719 data = &snapshot->data[curr_offset];
5720 err = devlink_nl_cmd_region_read_chunk_fill(skb, devlink,
5721 data, data_size,
5722 curr_offset);
5723 if (err)
5724 break;
5725
5726 curr_offset += data_size;
5727 }
5728 *new_offset = curr_offset;
5729
5730 return err;
5731}
5732
5733static int devlink_nl_cmd_region_read_dumpit(struct sk_buff *skb,
5734 struct netlink_callback *cb)
5735{
5736 const struct genl_dumpit_info *info = genl_dumpit_info(cb);
5737 u64 ret_offset, start_offset, end_offset = U64_MAX;
5738 struct nlattr **attrs = info->attrs;
5739 struct devlink_port *port = NULL;
5740 struct devlink_region *region;
5741 struct nlattr *chunks_attr;
5742 const char *region_name;
5743 struct devlink *devlink;
5744 unsigned int index;
5745 void *hdr;
5746 int err;
5747
5748 start_offset = *((u64 *)&cb->args[0]);
5749
5750 mutex_lock(&devlink_mutex);
5751 devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
5752 if (IS_ERR(devlink)) {
5753 err = PTR_ERR(devlink);
5754 goto out_dev;
5755 }
5756
5757 mutex_lock(&devlink->lock);
5758
5759 if (!attrs[DEVLINK_ATTR_REGION_NAME] ||
5760 !attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]) {
5761 err = -EINVAL;
5762 goto out_unlock;
5763 }
5764
5765 if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
5766 index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
5767
5768 port = devlink_port_get_by_index(devlink, index);
5769 if (!port) {
5770 err = -ENODEV;
5771 goto out_unlock;
5772 }
5773 }
5774
5775 region_name = nla_data(attrs[DEVLINK_ATTR_REGION_NAME]);
5776
5777 if (port)
5778 region = devlink_port_region_get_by_name(port, region_name);
5779 else
5780 region = devlink_region_get_by_name(devlink, region_name);
5781
5782 if (!region) {
5783 err = -EINVAL;
5784 goto out_unlock;
5785 }
5786
5787 if (attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR] &&
5788 attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]) {
5789 if (!start_offset)
5790 start_offset =
5791 nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
5792
5793 end_offset = nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
5794 end_offset += nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]);
5795 }
5796
5797 if (end_offset > region->size)
5798 end_offset = region->size;
5799
5800
5801 if (start_offset == end_offset) {
5802 err = 0;
5803 goto out_unlock;
5804 }
5805
5806 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
5807 &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI,
5808 DEVLINK_CMD_REGION_READ);
5809 if (!hdr) {
5810 err = -EMSGSIZE;
5811 goto out_unlock;
5812 }
5813
5814 err = devlink_nl_put_handle(skb, devlink);
5815 if (err)
5816 goto nla_put_failure;
5817
5818 if (region->port) {
5819 err = nla_put_u32(skb, DEVLINK_ATTR_PORT_INDEX,
5820 region->port->index);
5821 if (err)
5822 goto nla_put_failure;
5823 }
5824
5825 err = nla_put_string(skb, DEVLINK_ATTR_REGION_NAME, region_name);
5826 if (err)
5827 goto nla_put_failure;
5828
5829 chunks_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_REGION_CHUNKS);
5830 if (!chunks_attr) {
5831 err = -EMSGSIZE;
5832 goto nla_put_failure;
5833 }
5834
5835 err = devlink_nl_region_read_snapshot_fill(skb, devlink,
5836 region, attrs,
5837 start_offset,
5838 end_offset, &ret_offset);
5839
5840 if (err && err != -EMSGSIZE)
5841 goto nla_put_failure;
5842
5843
5844 if (ret_offset == start_offset) {
5845 err = -EINVAL;
5846 goto nla_put_failure;
5847 }
5848
5849 *((u64 *)&cb->args[0]) = ret_offset;
5850
5851 nla_nest_end(skb, chunks_attr);
5852 genlmsg_end(skb, hdr);
5853 mutex_unlock(&devlink->lock);
5854 devlink_put(devlink);
5855 mutex_unlock(&devlink_mutex);
5856
5857 return skb->len;
5858
5859nla_put_failure:
5860 genlmsg_cancel(skb, hdr);
5861out_unlock:
5862 mutex_unlock(&devlink->lock);
5863 devlink_put(devlink);
5864out_dev:
5865 mutex_unlock(&devlink_mutex);
5866 return err;
5867}
5868
5869struct devlink_info_req {
5870 struct sk_buff *msg;
5871};
5872
5873int devlink_info_driver_name_put(struct devlink_info_req *req, const char *name)
5874{
5875 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_DRIVER_NAME, name);
5876}
5877EXPORT_SYMBOL_GPL(devlink_info_driver_name_put);
5878
5879int devlink_info_serial_number_put(struct devlink_info_req *req, const char *sn)
5880{
5881 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_SERIAL_NUMBER, sn);
5882}
5883EXPORT_SYMBOL_GPL(devlink_info_serial_number_put);
5884
5885int devlink_info_board_serial_number_put(struct devlink_info_req *req,
5886 const char *bsn)
5887{
5888 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_BOARD_SERIAL_NUMBER,
5889 bsn);
5890}
5891EXPORT_SYMBOL_GPL(devlink_info_board_serial_number_put);
5892
5893static int devlink_info_version_put(struct devlink_info_req *req, int attr,
5894 const char *version_name,
5895 const char *version_value)
5896{
5897 struct nlattr *nest;
5898 int err;
5899
5900 nest = nla_nest_start_noflag(req->msg, attr);
5901 if (!nest)
5902 return -EMSGSIZE;
5903
5904 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_NAME,
5905 version_name);
5906 if (err)
5907 goto nla_put_failure;
5908
5909 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_VALUE,
5910 version_value);
5911 if (err)
5912 goto nla_put_failure;
5913
5914 nla_nest_end(req->msg, nest);
5915
5916 return 0;
5917
5918nla_put_failure:
5919 nla_nest_cancel(req->msg, nest);
5920 return err;
5921}
5922
5923int devlink_info_version_fixed_put(struct devlink_info_req *req,
5924 const char *version_name,
5925 const char *version_value)
5926{
5927 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_FIXED,
5928 version_name, version_value);
5929}
5930EXPORT_SYMBOL_GPL(devlink_info_version_fixed_put);
5931
5932int devlink_info_version_stored_put(struct devlink_info_req *req,
5933 const char *version_name,
5934 const char *version_value)
5935{
5936 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_STORED,
5937 version_name, version_value);
5938}
5939EXPORT_SYMBOL_GPL(devlink_info_version_stored_put);
5940
5941int devlink_info_version_running_put(struct devlink_info_req *req,
5942 const char *version_name,
5943 const char *version_value)
5944{
5945 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_RUNNING,
5946 version_name, version_value);
5947}
5948EXPORT_SYMBOL_GPL(devlink_info_version_running_put);
5949
5950static int
5951devlink_nl_info_fill(struct sk_buff *msg, struct devlink *devlink,
5952 enum devlink_command cmd, u32 portid,
5953 u32 seq, int flags, struct netlink_ext_ack *extack)
5954{
5955 struct devlink_info_req req;
5956 void *hdr;
5957 int err;
5958
5959 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
5960 if (!hdr)
5961 return -EMSGSIZE;
5962
5963 err = -EMSGSIZE;
5964 if (devlink_nl_put_handle(msg, devlink))
5965 goto err_cancel_msg;
5966
5967 req.msg = msg;
5968 err = devlink->ops->info_get(devlink, &req, extack);
5969 if (err)
5970 goto err_cancel_msg;
5971
5972 genlmsg_end(msg, hdr);
5973 return 0;
5974
5975err_cancel_msg:
5976 genlmsg_cancel(msg, hdr);
5977 return err;
5978}
5979
5980static int devlink_nl_cmd_info_get_doit(struct sk_buff *skb,
5981 struct genl_info *info)
5982{
5983 struct devlink *devlink = info->user_ptr[0];
5984 struct sk_buff *msg;
5985 int err;
5986
5987 if (!devlink->ops->info_get)
5988 return -EOPNOTSUPP;
5989
5990 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5991 if (!msg)
5992 return -ENOMEM;
5993
5994 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
5995 info->snd_portid, info->snd_seq, 0,
5996 info->extack);
5997 if (err) {
5998 nlmsg_free(msg);
5999 return err;
6000 }
6001
6002 return genlmsg_reply(msg, info);
6003}
6004
6005static int devlink_nl_cmd_info_get_dumpit(struct sk_buff *msg,
6006 struct netlink_callback *cb)
6007{
6008 struct devlink *devlink;
6009 int start = cb->args[0];
6010 unsigned long index;
6011 int idx = 0;
6012 int err = 0;
6013
6014 mutex_lock(&devlink_mutex);
6015 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
6016 if (!devlink_try_get(devlink))
6017 continue;
6018
6019 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
6020 goto retry;
6021
6022 if (idx < start || !devlink->ops->info_get)
6023 goto inc;
6024
6025 mutex_lock(&devlink->lock);
6026 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
6027 NETLINK_CB(cb->skb).portid,
6028 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6029 cb->extack);
6030 mutex_unlock(&devlink->lock);
6031 if (err == -EOPNOTSUPP)
6032 err = 0;
6033 else if (err) {
6034 devlink_put(devlink);
6035 break;
6036 }
6037inc:
6038 idx++;
6039retry:
6040 devlink_put(devlink);
6041 }
6042 mutex_unlock(&devlink_mutex);
6043
6044 if (err != -EMSGSIZE)
6045 return err;
6046
6047 cb->args[0] = idx;
6048 return msg->len;
6049}
6050
6051struct devlink_fmsg_item {
6052 struct list_head list;
6053 int attrtype;
6054 u8 nla_type;
6055 u16 len;
6056 int value[];
6057};
6058
6059struct devlink_fmsg {
6060 struct list_head item_list;
6061 bool putting_binary;
6062
6063
6064
6065
6066
6067};
6068
6069static struct devlink_fmsg *devlink_fmsg_alloc(void)
6070{
6071 struct devlink_fmsg *fmsg;
6072
6073 fmsg = kzalloc(sizeof(*fmsg), GFP_KERNEL);
6074 if (!fmsg)
6075 return NULL;
6076
6077 INIT_LIST_HEAD(&fmsg->item_list);
6078
6079 return fmsg;
6080}
6081
6082static void devlink_fmsg_free(struct devlink_fmsg *fmsg)
6083{
6084 struct devlink_fmsg_item *item, *tmp;
6085
6086 list_for_each_entry_safe(item, tmp, &fmsg->item_list, list) {
6087 list_del(&item->list);
6088 kfree(item);
6089 }
6090 kfree(fmsg);
6091}
6092
6093static int devlink_fmsg_nest_common(struct devlink_fmsg *fmsg,
6094 int attrtype)
6095{
6096 struct devlink_fmsg_item *item;
6097
6098 item = kzalloc(sizeof(*item), GFP_KERNEL);
6099 if (!item)
6100 return -ENOMEM;
6101
6102 item->attrtype = attrtype;
6103 list_add_tail(&item->list, &fmsg->item_list);
6104
6105 return 0;
6106}
6107
6108int devlink_fmsg_obj_nest_start(struct devlink_fmsg *fmsg)
6109{
6110 if (fmsg->putting_binary)
6111 return -EINVAL;
6112
6113 return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_OBJ_NEST_START);
6114}
6115EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_start);
6116
6117static int devlink_fmsg_nest_end(struct devlink_fmsg *fmsg)
6118{
6119 if (fmsg->putting_binary)
6120 return -EINVAL;
6121
6122 return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_NEST_END);
6123}
6124
6125int devlink_fmsg_obj_nest_end(struct devlink_fmsg *fmsg)
6126{
6127 if (fmsg->putting_binary)
6128 return -EINVAL;
6129
6130 return devlink_fmsg_nest_end(fmsg);
6131}
6132EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_end);
6133
6134#define DEVLINK_FMSG_MAX_SIZE (GENLMSG_DEFAULT_SIZE - GENL_HDRLEN - NLA_HDRLEN)
6135
6136static int devlink_fmsg_put_name(struct devlink_fmsg *fmsg, const char *name)
6137{
6138 struct devlink_fmsg_item *item;
6139
6140 if (fmsg->putting_binary)
6141 return -EINVAL;
6142
6143 if (strlen(name) + 1 > DEVLINK_FMSG_MAX_SIZE)
6144 return -EMSGSIZE;
6145
6146 item = kzalloc(sizeof(*item) + strlen(name) + 1, GFP_KERNEL);
6147 if (!item)
6148 return -ENOMEM;
6149
6150 item->nla_type = NLA_NUL_STRING;
6151 item->len = strlen(name) + 1;
6152 item->attrtype = DEVLINK_ATTR_FMSG_OBJ_NAME;
6153 memcpy(&item->value, name, item->len);
6154 list_add_tail(&item->list, &fmsg->item_list);
6155
6156 return 0;
6157}
6158
6159int devlink_fmsg_pair_nest_start(struct devlink_fmsg *fmsg, const char *name)
6160{
6161 int err;
6162
6163 if (fmsg->putting_binary)
6164 return -EINVAL;
6165
6166 err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_PAIR_NEST_START);
6167 if (err)
6168 return err;
6169
6170 err = devlink_fmsg_put_name(fmsg, name);
6171 if (err)
6172 return err;
6173
6174 return 0;
6175}
6176EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_start);
6177
6178int devlink_fmsg_pair_nest_end(struct devlink_fmsg *fmsg)
6179{
6180 if (fmsg->putting_binary)
6181 return -EINVAL;
6182
6183 return devlink_fmsg_nest_end(fmsg);
6184}
6185EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_end);
6186
6187int devlink_fmsg_arr_pair_nest_start(struct devlink_fmsg *fmsg,
6188 const char *name)
6189{
6190 int err;
6191
6192 if (fmsg->putting_binary)
6193 return -EINVAL;
6194
6195 err = devlink_fmsg_pair_nest_start(fmsg, name);
6196 if (err)
6197 return err;
6198
6199 err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_ARR_NEST_START);
6200 if (err)
6201 return err;
6202
6203 return 0;
6204}
6205EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_start);
6206
6207int devlink_fmsg_arr_pair_nest_end(struct devlink_fmsg *fmsg)
6208{
6209 int err;
6210
6211 if (fmsg->putting_binary)
6212 return -EINVAL;
6213
6214 err = devlink_fmsg_nest_end(fmsg);
6215 if (err)
6216 return err;
6217
6218 err = devlink_fmsg_nest_end(fmsg);
6219 if (err)
6220 return err;
6221
6222 return 0;
6223}
6224EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_end);
6225
6226int devlink_fmsg_binary_pair_nest_start(struct devlink_fmsg *fmsg,
6227 const char *name)
6228{
6229 int err;
6230
6231 err = devlink_fmsg_arr_pair_nest_start(fmsg, name);
6232 if (err)
6233 return err;
6234
6235 fmsg->putting_binary = true;
6236 return err;
6237}
6238EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_start);
6239
6240int devlink_fmsg_binary_pair_nest_end(struct devlink_fmsg *fmsg)
6241{
6242 if (!fmsg->putting_binary)
6243 return -EINVAL;
6244
6245 fmsg->putting_binary = false;
6246 return devlink_fmsg_arr_pair_nest_end(fmsg);
6247}
6248EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_end);
6249
6250static int devlink_fmsg_put_value(struct devlink_fmsg *fmsg,
6251 const void *value, u16 value_len,
6252 u8 value_nla_type)
6253{
6254 struct devlink_fmsg_item *item;
6255
6256 if (value_len > DEVLINK_FMSG_MAX_SIZE)
6257 return -EMSGSIZE;
6258
6259 item = kzalloc(sizeof(*item) + value_len, GFP_KERNEL);
6260 if (!item)
6261 return -ENOMEM;
6262
6263 item->nla_type = value_nla_type;
6264 item->len = value_len;
6265 item->attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
6266 memcpy(&item->value, value, item->len);
6267 list_add_tail(&item->list, &fmsg->item_list);
6268
6269 return 0;
6270}
6271
6272int devlink_fmsg_bool_put(struct devlink_fmsg *fmsg, bool value)
6273{
6274 if (fmsg->putting_binary)
6275 return -EINVAL;
6276
6277 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_FLAG);
6278}
6279EXPORT_SYMBOL_GPL(devlink_fmsg_bool_put);
6280
6281int devlink_fmsg_u8_put(struct devlink_fmsg *fmsg, u8 value)
6282{
6283 if (fmsg->putting_binary)
6284 return -EINVAL;
6285
6286 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U8);
6287}
6288EXPORT_SYMBOL_GPL(devlink_fmsg_u8_put);
6289
6290int devlink_fmsg_u32_put(struct devlink_fmsg *fmsg, u32 value)
6291{
6292 if (fmsg->putting_binary)
6293 return -EINVAL;
6294
6295 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U32);
6296}
6297EXPORT_SYMBOL_GPL(devlink_fmsg_u32_put);
6298
6299int devlink_fmsg_u64_put(struct devlink_fmsg *fmsg, u64 value)
6300{
6301 if (fmsg->putting_binary)
6302 return -EINVAL;
6303
6304 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U64);
6305}
6306EXPORT_SYMBOL_GPL(devlink_fmsg_u64_put);
6307
6308int devlink_fmsg_string_put(struct devlink_fmsg *fmsg, const char *value)
6309{
6310 if (fmsg->putting_binary)
6311 return -EINVAL;
6312
6313 return devlink_fmsg_put_value(fmsg, value, strlen(value) + 1,
6314 NLA_NUL_STRING);
6315}
6316EXPORT_SYMBOL_GPL(devlink_fmsg_string_put);
6317
6318int devlink_fmsg_binary_put(struct devlink_fmsg *fmsg, const void *value,
6319 u16 value_len)
6320{
6321 if (!fmsg->putting_binary)
6322 return -EINVAL;
6323
6324 return devlink_fmsg_put_value(fmsg, value, value_len, NLA_BINARY);
6325}
6326EXPORT_SYMBOL_GPL(devlink_fmsg_binary_put);
6327
6328int devlink_fmsg_bool_pair_put(struct devlink_fmsg *fmsg, const char *name,
6329 bool value)
6330{
6331 int err;
6332
6333 err = devlink_fmsg_pair_nest_start(fmsg, name);
6334 if (err)
6335 return err;
6336
6337 err = devlink_fmsg_bool_put(fmsg, value);
6338 if (err)
6339 return err;
6340
6341 err = devlink_fmsg_pair_nest_end(fmsg);
6342 if (err)
6343 return err;
6344
6345 return 0;
6346}
6347EXPORT_SYMBOL_GPL(devlink_fmsg_bool_pair_put);
6348
6349int devlink_fmsg_u8_pair_put(struct devlink_fmsg *fmsg, const char *name,
6350 u8 value)
6351{
6352 int err;
6353
6354 err = devlink_fmsg_pair_nest_start(fmsg, name);
6355 if (err)
6356 return err;
6357
6358 err = devlink_fmsg_u8_put(fmsg, value);
6359 if (err)
6360 return err;
6361
6362 err = devlink_fmsg_pair_nest_end(fmsg);
6363 if (err)
6364 return err;
6365
6366 return 0;
6367}
6368EXPORT_SYMBOL_GPL(devlink_fmsg_u8_pair_put);
6369
6370int devlink_fmsg_u32_pair_put(struct devlink_fmsg *fmsg, const char *name,
6371 u32 value)
6372{
6373 int err;
6374
6375 err = devlink_fmsg_pair_nest_start(fmsg, name);
6376 if (err)
6377 return err;
6378
6379 err = devlink_fmsg_u32_put(fmsg, value);
6380 if (err)
6381 return err;
6382
6383 err = devlink_fmsg_pair_nest_end(fmsg);
6384 if (err)
6385 return err;
6386
6387 return 0;
6388}
6389EXPORT_SYMBOL_GPL(devlink_fmsg_u32_pair_put);
6390
6391int devlink_fmsg_u64_pair_put(struct devlink_fmsg *fmsg, const char *name,
6392 u64 value)
6393{
6394 int err;
6395
6396 err = devlink_fmsg_pair_nest_start(fmsg, name);
6397 if (err)
6398 return err;
6399
6400 err = devlink_fmsg_u64_put(fmsg, value);
6401 if (err)
6402 return err;
6403
6404 err = devlink_fmsg_pair_nest_end(fmsg);
6405 if (err)
6406 return err;
6407
6408 return 0;
6409}
6410EXPORT_SYMBOL_GPL(devlink_fmsg_u64_pair_put);
6411
6412int devlink_fmsg_string_pair_put(struct devlink_fmsg *fmsg, const char *name,
6413 const char *value)
6414{
6415 int err;
6416
6417 err = devlink_fmsg_pair_nest_start(fmsg, name);
6418 if (err)
6419 return err;
6420
6421 err = devlink_fmsg_string_put(fmsg, value);
6422 if (err)
6423 return err;
6424
6425 err = devlink_fmsg_pair_nest_end(fmsg);
6426 if (err)
6427 return err;
6428
6429 return 0;
6430}
6431EXPORT_SYMBOL_GPL(devlink_fmsg_string_pair_put);
6432
6433int devlink_fmsg_binary_pair_put(struct devlink_fmsg *fmsg, const char *name,
6434 const void *value, u32 value_len)
6435{
6436 u32 data_size;
6437 int end_err;
6438 u32 offset;
6439 int err;
6440
6441 err = devlink_fmsg_binary_pair_nest_start(fmsg, name);
6442 if (err)
6443 return err;
6444
6445 for (offset = 0; offset < value_len; offset += data_size) {
6446 data_size = value_len - offset;
6447 if (data_size > DEVLINK_FMSG_MAX_SIZE)
6448 data_size = DEVLINK_FMSG_MAX_SIZE;
6449 err = devlink_fmsg_binary_put(fmsg, value + offset, data_size);
6450 if (err)
6451 break;
6452
6453
6454
6455
6456 }
6457
6458 end_err = devlink_fmsg_binary_pair_nest_end(fmsg);
6459 if (end_err)
6460 err = end_err;
6461
6462 return err;
6463}
6464EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_put);
6465
6466static int
6467devlink_fmsg_item_fill_type(struct devlink_fmsg_item *msg, struct sk_buff *skb)
6468{
6469 switch (msg->nla_type) {
6470 case NLA_FLAG:
6471 case NLA_U8:
6472 case NLA_U32:
6473 case NLA_U64:
6474 case NLA_NUL_STRING:
6475 case NLA_BINARY:
6476 return nla_put_u8(skb, DEVLINK_ATTR_FMSG_OBJ_VALUE_TYPE,
6477 msg->nla_type);
6478 default:
6479 return -EINVAL;
6480 }
6481}
6482
6483static int
6484devlink_fmsg_item_fill_data(struct devlink_fmsg_item *msg, struct sk_buff *skb)
6485{
6486 int attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
6487 u8 tmp;
6488
6489 switch (msg->nla_type) {
6490 case NLA_FLAG:
6491
6492 tmp = *(bool *) msg->value;
6493
6494 return nla_put_u8(skb, attrtype, tmp);
6495 case NLA_U8:
6496 return nla_put_u8(skb, attrtype, *(u8 *) msg->value);
6497 case NLA_U32:
6498 return nla_put_u32(skb, attrtype, *(u32 *) msg->value);
6499 case NLA_U64:
6500 return nla_put_u64_64bit(skb, attrtype, *(u64 *) msg->value,
6501 DEVLINK_ATTR_PAD);
6502 case NLA_NUL_STRING:
6503 return nla_put_string(skb, attrtype, (char *) &msg->value);
6504 case NLA_BINARY:
6505 return nla_put(skb, attrtype, msg->len, (void *) &msg->value);
6506 default:
6507 return -EINVAL;
6508 }
6509}
6510
6511static int
6512devlink_fmsg_prepare_skb(struct devlink_fmsg *fmsg, struct sk_buff *skb,
6513 int *start)
6514{
6515 struct devlink_fmsg_item *item;
6516 struct nlattr *fmsg_nlattr;
6517 int i = 0;
6518 int err;
6519
6520 fmsg_nlattr = nla_nest_start_noflag(skb, DEVLINK_ATTR_FMSG);
6521 if (!fmsg_nlattr)
6522 return -EMSGSIZE;
6523
6524 list_for_each_entry(item, &fmsg->item_list, list) {
6525 if (i < *start) {
6526 i++;
6527 continue;
6528 }
6529
6530 switch (item->attrtype) {
6531 case DEVLINK_ATTR_FMSG_OBJ_NEST_START:
6532 case DEVLINK_ATTR_FMSG_PAIR_NEST_START:
6533 case DEVLINK_ATTR_FMSG_ARR_NEST_START:
6534 case DEVLINK_ATTR_FMSG_NEST_END:
6535 err = nla_put_flag(skb, item->attrtype);
6536 break;
6537 case DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA:
6538 err = devlink_fmsg_item_fill_type(item, skb);
6539 if (err)
6540 break;
6541 err = devlink_fmsg_item_fill_data(item, skb);
6542 break;
6543 case DEVLINK_ATTR_FMSG_OBJ_NAME:
6544 err = nla_put_string(skb, item->attrtype,
6545 (char *) &item->value);
6546 break;
6547 default:
6548 err = -EINVAL;
6549 break;
6550 }
6551 if (!err)
6552 *start = ++i;
6553 else
6554 break;
6555 }
6556
6557 nla_nest_end(skb, fmsg_nlattr);
6558 return err;
6559}
6560
6561static int devlink_fmsg_snd(struct devlink_fmsg *fmsg,
6562 struct genl_info *info,
6563 enum devlink_command cmd, int flags)
6564{
6565 struct nlmsghdr *nlh;
6566 struct sk_buff *skb;
6567 bool last = false;
6568 int index = 0;
6569 void *hdr;
6570 int err;
6571
6572 while (!last) {
6573 int tmp_index = index;
6574
6575 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
6576 if (!skb)
6577 return -ENOMEM;
6578
6579 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
6580 &devlink_nl_family, flags | NLM_F_MULTI, cmd);
6581 if (!hdr) {
6582 err = -EMSGSIZE;
6583 goto nla_put_failure;
6584 }
6585
6586 err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
6587 if (!err)
6588 last = true;
6589 else if (err != -EMSGSIZE || tmp_index == index)
6590 goto nla_put_failure;
6591
6592 genlmsg_end(skb, hdr);
6593 err = genlmsg_reply(skb, info);
6594 if (err)
6595 return err;
6596 }
6597
6598 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
6599 if (!skb)
6600 return -ENOMEM;
6601 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
6602 NLMSG_DONE, 0, flags | NLM_F_MULTI);
6603 if (!nlh) {
6604 err = -EMSGSIZE;
6605 goto nla_put_failure;
6606 }
6607
6608 return genlmsg_reply(skb, info);
6609
6610nla_put_failure:
6611 nlmsg_free(skb);
6612 return err;
6613}
6614
6615static int devlink_fmsg_dumpit(struct devlink_fmsg *fmsg, struct sk_buff *skb,
6616 struct netlink_callback *cb,
6617 enum devlink_command cmd)
6618{
6619 int index = cb->args[0];
6620 int tmp_index = index;
6621 void *hdr;
6622 int err;
6623
6624 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
6625 &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI, cmd);
6626 if (!hdr) {
6627 err = -EMSGSIZE;
6628 goto nla_put_failure;
6629 }
6630
6631 err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
6632 if ((err && err != -EMSGSIZE) || tmp_index == index)
6633 goto nla_put_failure;
6634
6635 cb->args[0] = index;
6636 genlmsg_end(skb, hdr);
6637 return skb->len;
6638
6639nla_put_failure:
6640 genlmsg_cancel(skb, hdr);
6641 return err;
6642}
6643
6644struct devlink_health_reporter {
6645 struct list_head list;
6646 void *priv;
6647 const struct devlink_health_reporter_ops *ops;
6648 struct devlink *devlink;
6649 struct devlink_port *devlink_port;
6650 struct devlink_fmsg *dump_fmsg;
6651 struct mutex dump_lock;
6652 u64 graceful_period;
6653 bool auto_recover;
6654 bool auto_dump;
6655 u8 health_state;
6656 u64 dump_ts;
6657 u64 dump_real_ts;
6658 u64 error_count;
6659 u64 recovery_count;
6660 u64 last_recovery_ts;
6661 refcount_t refcount;
6662};
6663
6664void *
6665devlink_health_reporter_priv(struct devlink_health_reporter *reporter)
6666{
6667 return reporter->priv;
6668}
6669EXPORT_SYMBOL_GPL(devlink_health_reporter_priv);
6670
6671static struct devlink_health_reporter *
6672__devlink_health_reporter_find_by_name(struct list_head *reporter_list,
6673 struct mutex *list_lock,
6674 const char *reporter_name)
6675{
6676 struct devlink_health_reporter *reporter;
6677
6678 lockdep_assert_held(list_lock);
6679 list_for_each_entry(reporter, reporter_list, list)
6680 if (!strcmp(reporter->ops->name, reporter_name))
6681 return reporter;
6682 return NULL;
6683}
6684
6685static struct devlink_health_reporter *
6686devlink_health_reporter_find_by_name(struct devlink *devlink,
6687 const char *reporter_name)
6688{
6689 return __devlink_health_reporter_find_by_name(&devlink->reporter_list,
6690 &devlink->reporters_lock,
6691 reporter_name);
6692}
6693
6694static struct devlink_health_reporter *
6695devlink_port_health_reporter_find_by_name(struct devlink_port *devlink_port,
6696 const char *reporter_name)
6697{
6698 return __devlink_health_reporter_find_by_name(&devlink_port->reporter_list,
6699 &devlink_port->reporters_lock,
6700 reporter_name);
6701}
6702
6703static struct devlink_health_reporter *
6704__devlink_health_reporter_create(struct devlink *devlink,
6705 const struct devlink_health_reporter_ops *ops,
6706 u64 graceful_period, void *priv)
6707{
6708 struct devlink_health_reporter *reporter;
6709
6710 if (WARN_ON(graceful_period && !ops->recover))
6711 return ERR_PTR(-EINVAL);
6712
6713 reporter = kzalloc(sizeof(*reporter), GFP_KERNEL);
6714 if (!reporter)
6715 return ERR_PTR(-ENOMEM);
6716
6717 reporter->priv = priv;
6718 reporter->ops = ops;
6719 reporter->devlink = devlink;
6720 reporter->graceful_period = graceful_period;
6721 reporter->auto_recover = !!ops->recover;
6722 reporter->auto_dump = !!ops->dump;
6723 mutex_init(&reporter->dump_lock);
6724 refcount_set(&reporter->refcount, 1);
6725 return reporter;
6726}
6727
6728
6729
6730
6731
6732
6733
6734
6735
6736
6737struct devlink_health_reporter *
6738devlink_port_health_reporter_create(struct devlink_port *port,
6739 const struct devlink_health_reporter_ops *ops,
6740 u64 graceful_period, void *priv)
6741{
6742 struct devlink_health_reporter *reporter;
6743
6744 mutex_lock(&port->reporters_lock);
6745 if (__devlink_health_reporter_find_by_name(&port->reporter_list,
6746 &port->reporters_lock, ops->name)) {
6747 reporter = ERR_PTR(-EEXIST);
6748 goto unlock;
6749 }
6750
6751 reporter = __devlink_health_reporter_create(port->devlink, ops,
6752 graceful_period, priv);
6753 if (IS_ERR(reporter))
6754 goto unlock;
6755
6756 reporter->devlink_port = port;
6757 list_add_tail(&reporter->list, &port->reporter_list);
6758unlock:
6759 mutex_unlock(&port->reporters_lock);
6760 return reporter;
6761}
6762EXPORT_SYMBOL_GPL(devlink_port_health_reporter_create);
6763
6764
6765
6766
6767
6768
6769
6770
6771
6772struct devlink_health_reporter *
6773devlink_health_reporter_create(struct devlink *devlink,
6774 const struct devlink_health_reporter_ops *ops,
6775 u64 graceful_period, void *priv)
6776{
6777 struct devlink_health_reporter *reporter;
6778
6779 mutex_lock(&devlink->reporters_lock);
6780 if (devlink_health_reporter_find_by_name(devlink, ops->name)) {
6781 reporter = ERR_PTR(-EEXIST);
6782 goto unlock;
6783 }
6784
6785 reporter = __devlink_health_reporter_create(devlink, ops,
6786 graceful_period, priv);
6787 if (IS_ERR(reporter))
6788 goto unlock;
6789
6790 list_add_tail(&reporter->list, &devlink->reporter_list);
6791unlock:
6792 mutex_unlock(&devlink->reporters_lock);
6793 return reporter;
6794}
6795EXPORT_SYMBOL_GPL(devlink_health_reporter_create);
6796
6797static void
6798devlink_health_reporter_free(struct devlink_health_reporter *reporter)
6799{
6800 mutex_destroy(&reporter->dump_lock);
6801 if (reporter->dump_fmsg)
6802 devlink_fmsg_free(reporter->dump_fmsg);
6803 kfree(reporter);
6804}
6805
6806static void
6807devlink_health_reporter_put(struct devlink_health_reporter *reporter)
6808{
6809 if (refcount_dec_and_test(&reporter->refcount))
6810 devlink_health_reporter_free(reporter);
6811}
6812
6813static void
6814__devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
6815{
6816 list_del(&reporter->list);
6817 devlink_health_reporter_put(reporter);
6818}
6819
6820
6821
6822
6823
6824
6825void
6826devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
6827{
6828 struct mutex *lock = &reporter->devlink->reporters_lock;
6829
6830 mutex_lock(lock);
6831 __devlink_health_reporter_destroy(reporter);
6832 mutex_unlock(lock);
6833}
6834EXPORT_SYMBOL_GPL(devlink_health_reporter_destroy);
6835
6836
6837
6838
6839
6840
6841void
6842devlink_port_health_reporter_destroy(struct devlink_health_reporter *reporter)
6843{
6844 struct mutex *lock = &reporter->devlink_port->reporters_lock;
6845
6846 mutex_lock(lock);
6847 __devlink_health_reporter_destroy(reporter);
6848 mutex_unlock(lock);
6849}
6850EXPORT_SYMBOL_GPL(devlink_port_health_reporter_destroy);
6851
6852static int
6853devlink_nl_health_reporter_fill(struct sk_buff *msg,
6854 struct devlink_health_reporter *reporter,
6855 enum devlink_command cmd, u32 portid,
6856 u32 seq, int flags)
6857{
6858 struct devlink *devlink = reporter->devlink;
6859 struct nlattr *reporter_attr;
6860 void *hdr;
6861
6862 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
6863 if (!hdr)
6864 return -EMSGSIZE;
6865
6866 if (devlink_nl_put_handle(msg, devlink))
6867 goto genlmsg_cancel;
6868
6869 if (reporter->devlink_port) {
6870 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, reporter->devlink_port->index))
6871 goto genlmsg_cancel;
6872 }
6873 reporter_attr = nla_nest_start_noflag(msg,
6874 DEVLINK_ATTR_HEALTH_REPORTER);
6875 if (!reporter_attr)
6876 goto genlmsg_cancel;
6877 if (nla_put_string(msg, DEVLINK_ATTR_HEALTH_REPORTER_NAME,
6878 reporter->ops->name))
6879 goto reporter_nest_cancel;
6880 if (nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_STATE,
6881 reporter->health_state))
6882 goto reporter_nest_cancel;
6883 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_ERR_COUNT,
6884 reporter->error_count, DEVLINK_ATTR_PAD))
6885 goto reporter_nest_cancel;
6886 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_RECOVER_COUNT,
6887 reporter->recovery_count, DEVLINK_ATTR_PAD))
6888 goto reporter_nest_cancel;
6889 if (reporter->ops->recover &&
6890 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD,
6891 reporter->graceful_period,
6892 DEVLINK_ATTR_PAD))
6893 goto reporter_nest_cancel;
6894 if (reporter->ops->recover &&
6895 nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER,
6896 reporter->auto_recover))
6897 goto reporter_nest_cancel;
6898 if (reporter->dump_fmsg &&
6899 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS,
6900 jiffies_to_msecs(reporter->dump_ts),
6901 DEVLINK_ATTR_PAD))
6902 goto reporter_nest_cancel;
6903 if (reporter->dump_fmsg &&
6904 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS_NS,
6905 reporter->dump_real_ts, DEVLINK_ATTR_PAD))
6906 goto reporter_nest_cancel;
6907 if (reporter->ops->dump &&
6908 nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP,
6909 reporter->auto_dump))
6910 goto reporter_nest_cancel;
6911
6912 nla_nest_end(msg, reporter_attr);
6913 genlmsg_end(msg, hdr);
6914 return 0;
6915
6916reporter_nest_cancel:
6917 nla_nest_end(msg, reporter_attr);
6918genlmsg_cancel:
6919 genlmsg_cancel(msg, hdr);
6920 return -EMSGSIZE;
6921}
6922
6923static void devlink_recover_notify(struct devlink_health_reporter *reporter,
6924 enum devlink_command cmd)
6925{
6926 struct sk_buff *msg;
6927 int err;
6928
6929 WARN_ON(cmd != DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
6930
6931 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6932 if (!msg)
6933 return;
6934
6935 err = devlink_nl_health_reporter_fill(msg, reporter, cmd, 0, 0, 0);
6936 if (err) {
6937 nlmsg_free(msg);
6938 return;
6939 }
6940
6941 genlmsg_multicast_netns(&devlink_nl_family,
6942 devlink_net(reporter->devlink),
6943 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
6944}
6945
6946void
6947devlink_health_reporter_recovery_done(struct devlink_health_reporter *reporter)
6948{
6949 reporter->recovery_count++;
6950 reporter->last_recovery_ts = jiffies;
6951}
6952EXPORT_SYMBOL_GPL(devlink_health_reporter_recovery_done);
6953
6954static int
6955devlink_health_reporter_recover(struct devlink_health_reporter *reporter,
6956 void *priv_ctx, struct netlink_ext_ack *extack)
6957{
6958 int err;
6959
6960 if (reporter->health_state == DEVLINK_HEALTH_REPORTER_STATE_HEALTHY)
6961 return 0;
6962
6963 if (!reporter->ops->recover)
6964 return -EOPNOTSUPP;
6965
6966 err = reporter->ops->recover(reporter, priv_ctx, extack);
6967 if (err)
6968 return err;
6969
6970 devlink_health_reporter_recovery_done(reporter);
6971 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_HEALTHY;
6972 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
6973
6974 return 0;
6975}
6976
6977static void
6978devlink_health_dump_clear(struct devlink_health_reporter *reporter)
6979{
6980 if (!reporter->dump_fmsg)
6981 return;
6982 devlink_fmsg_free(reporter->dump_fmsg);
6983 reporter->dump_fmsg = NULL;
6984}
6985
6986static int devlink_health_do_dump(struct devlink_health_reporter *reporter,
6987 void *priv_ctx,
6988 struct netlink_ext_ack *extack)
6989{
6990 int err;
6991
6992 if (!reporter->ops->dump)
6993 return 0;
6994
6995 if (reporter->dump_fmsg)
6996 return 0;
6997
6998 reporter->dump_fmsg = devlink_fmsg_alloc();
6999 if (!reporter->dump_fmsg) {
7000 err = -ENOMEM;
7001 return err;
7002 }
7003
7004 err = devlink_fmsg_obj_nest_start(reporter->dump_fmsg);
7005 if (err)
7006 goto dump_err;
7007
7008 err = reporter->ops->dump(reporter, reporter->dump_fmsg,
7009 priv_ctx, extack);
7010 if (err)
7011 goto dump_err;
7012
7013 err = devlink_fmsg_obj_nest_end(reporter->dump_fmsg);
7014 if (err)
7015 goto dump_err;
7016
7017 reporter->dump_ts = jiffies;
7018 reporter->dump_real_ts = ktime_get_real_ns();
7019
7020 return 0;
7021
7022dump_err:
7023 devlink_health_dump_clear(reporter);
7024 return err;
7025}
7026
7027int devlink_health_report(struct devlink_health_reporter *reporter,
7028 const char *msg, void *priv_ctx)
7029{
7030 enum devlink_health_reporter_state prev_health_state;
7031 struct devlink *devlink = reporter->devlink;
7032 unsigned long recover_ts_threshold;
7033
7034
7035 WARN_ON(!msg);
7036 trace_devlink_health_report(devlink, reporter->ops->name, msg);
7037 reporter->error_count++;
7038 prev_health_state = reporter->health_state;
7039 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
7040 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
7041
7042
7043 recover_ts_threshold = reporter->last_recovery_ts +
7044 msecs_to_jiffies(reporter->graceful_period);
7045 if (reporter->auto_recover &&
7046 (prev_health_state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY ||
7047 (reporter->last_recovery_ts && reporter->recovery_count &&
7048 time_is_after_jiffies(recover_ts_threshold)))) {
7049 trace_devlink_health_recover_aborted(devlink,
7050 reporter->ops->name,
7051 reporter->health_state,
7052 jiffies -
7053 reporter->last_recovery_ts);
7054 return -ECANCELED;
7055 }
7056
7057 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
7058
7059 if (reporter->auto_dump) {
7060 mutex_lock(&reporter->dump_lock);
7061
7062 devlink_health_do_dump(reporter, priv_ctx, NULL);
7063 mutex_unlock(&reporter->dump_lock);
7064 }
7065
7066 if (reporter->auto_recover)
7067 return devlink_health_reporter_recover(reporter,
7068 priv_ctx, NULL);
7069
7070 return 0;
7071}
7072EXPORT_SYMBOL_GPL(devlink_health_report);
7073
7074static struct devlink_health_reporter *
7075devlink_health_reporter_get_from_attrs(struct devlink *devlink,
7076 struct nlattr **attrs)
7077{
7078 struct devlink_health_reporter *reporter;
7079 struct devlink_port *devlink_port;
7080 char *reporter_name;
7081
7082 if (!attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME])
7083 return NULL;
7084
7085 reporter_name = nla_data(attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME]);
7086 devlink_port = devlink_port_get_from_attrs(devlink, attrs);
7087 if (IS_ERR(devlink_port)) {
7088 mutex_lock(&devlink->reporters_lock);
7089 reporter = devlink_health_reporter_find_by_name(devlink, reporter_name);
7090 if (reporter)
7091 refcount_inc(&reporter->refcount);
7092 mutex_unlock(&devlink->reporters_lock);
7093 } else {
7094 mutex_lock(&devlink_port->reporters_lock);
7095 reporter = devlink_port_health_reporter_find_by_name(devlink_port, reporter_name);
7096 if (reporter)
7097 refcount_inc(&reporter->refcount);
7098 mutex_unlock(&devlink_port->reporters_lock);
7099 }
7100
7101 return reporter;
7102}
7103
7104static struct devlink_health_reporter *
7105devlink_health_reporter_get_from_info(struct devlink *devlink,
7106 struct genl_info *info)
7107{
7108 return devlink_health_reporter_get_from_attrs(devlink, info->attrs);
7109}
7110
7111static struct devlink_health_reporter *
7112devlink_health_reporter_get_from_cb(struct netlink_callback *cb)
7113{
7114 const struct genl_dumpit_info *info = genl_dumpit_info(cb);
7115 struct devlink_health_reporter *reporter;
7116 struct nlattr **attrs = info->attrs;
7117 struct devlink *devlink;
7118
7119 mutex_lock(&devlink_mutex);
7120 devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
7121 if (IS_ERR(devlink))
7122 goto unlock;
7123
7124 reporter = devlink_health_reporter_get_from_attrs(devlink, attrs);
7125 devlink_put(devlink);
7126 mutex_unlock(&devlink_mutex);
7127 return reporter;
7128unlock:
7129 mutex_unlock(&devlink_mutex);
7130 return NULL;
7131}
7132
7133void
7134devlink_health_reporter_state_update(struct devlink_health_reporter *reporter,
7135 enum devlink_health_reporter_state state)
7136{
7137 if (WARN_ON(state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY &&
7138 state != DEVLINK_HEALTH_REPORTER_STATE_ERROR))
7139 return;
7140
7141 if (reporter->health_state == state)
7142 return;
7143
7144 reporter->health_state = state;
7145 trace_devlink_health_reporter_state_update(reporter->devlink,
7146 reporter->ops->name, state);
7147 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
7148}
7149EXPORT_SYMBOL_GPL(devlink_health_reporter_state_update);
7150
7151static int devlink_nl_cmd_health_reporter_get_doit(struct sk_buff *skb,
7152 struct genl_info *info)
7153{
7154 struct devlink *devlink = info->user_ptr[0];
7155 struct devlink_health_reporter *reporter;
7156 struct sk_buff *msg;
7157 int err;
7158
7159 reporter = devlink_health_reporter_get_from_info(devlink, info);
7160 if (!reporter)
7161 return -EINVAL;
7162
7163 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7164 if (!msg) {
7165 err = -ENOMEM;
7166 goto out;
7167 }
7168
7169 err = devlink_nl_health_reporter_fill(msg, reporter,
7170 DEVLINK_CMD_HEALTH_REPORTER_GET,
7171 info->snd_portid, info->snd_seq,
7172 0);
7173 if (err) {
7174 nlmsg_free(msg);
7175 goto out;
7176 }
7177
7178 err = genlmsg_reply(msg, info);
7179out:
7180 devlink_health_reporter_put(reporter);
7181 return err;
7182}
7183
7184static int
7185devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg,
7186 struct netlink_callback *cb)
7187{
7188 struct devlink_health_reporter *reporter;
7189 struct devlink_port *port;
7190 struct devlink *devlink;
7191 int start = cb->args[0];
7192 unsigned long index;
7193 int idx = 0;
7194 int err;
7195
7196 mutex_lock(&devlink_mutex);
7197 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
7198 if (!devlink_try_get(devlink))
7199 continue;
7200
7201 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
7202 goto retry_rep;
7203
7204 mutex_lock(&devlink->reporters_lock);
7205 list_for_each_entry(reporter, &devlink->reporter_list,
7206 list) {
7207 if (idx < start) {
7208 idx++;
7209 continue;
7210 }
7211 err = devlink_nl_health_reporter_fill(
7212 msg, reporter, DEVLINK_CMD_HEALTH_REPORTER_GET,
7213 NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
7214 NLM_F_MULTI);
7215 if (err) {
7216 mutex_unlock(&devlink->reporters_lock);
7217 devlink_put(devlink);
7218 goto out;
7219 }
7220 idx++;
7221 }
7222 mutex_unlock(&devlink->reporters_lock);
7223retry_rep:
7224 devlink_put(devlink);
7225 }
7226
7227 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
7228 if (!devlink_try_get(devlink))
7229 continue;
7230
7231 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
7232 goto retry_port;
7233
7234 mutex_lock(&devlink->lock);
7235 list_for_each_entry(port, &devlink->port_list, list) {
7236 mutex_lock(&port->reporters_lock);
7237 list_for_each_entry(reporter, &port->reporter_list, list) {
7238 if (idx < start) {
7239 idx++;
7240 continue;
7241 }
7242 err = devlink_nl_health_reporter_fill(
7243 msg, reporter,
7244 DEVLINK_CMD_HEALTH_REPORTER_GET,
7245 NETLINK_CB(cb->skb).portid,
7246 cb->nlh->nlmsg_seq, NLM_F_MULTI);
7247 if (err) {
7248 mutex_unlock(&port->reporters_lock);
7249 mutex_unlock(&devlink->lock);
7250 devlink_put(devlink);
7251 goto out;
7252 }
7253 idx++;
7254 }
7255 mutex_unlock(&port->reporters_lock);
7256 }
7257 mutex_unlock(&devlink->lock);
7258retry_port:
7259 devlink_put(devlink);
7260 }
7261out:
7262 mutex_unlock(&devlink_mutex);
7263
7264 cb->args[0] = idx;
7265 return msg->len;
7266}
7267
7268static int
7269devlink_nl_cmd_health_reporter_set_doit(struct sk_buff *skb,
7270 struct genl_info *info)
7271{
7272 struct devlink *devlink = info->user_ptr[0];
7273 struct devlink_health_reporter *reporter;
7274 int err;
7275
7276 reporter = devlink_health_reporter_get_from_info(devlink, info);
7277 if (!reporter)
7278 return -EINVAL;
7279
7280 if (!reporter->ops->recover &&
7281 (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] ||
7282 info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])) {
7283 err = -EOPNOTSUPP;
7284 goto out;
7285 }
7286 if (!reporter->ops->dump &&
7287 info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]) {
7288 err = -EOPNOTSUPP;
7289 goto out;
7290 }
7291
7292 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD])
7293 reporter->graceful_period =
7294 nla_get_u64(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD]);
7295
7296 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])
7297 reporter->auto_recover =
7298 nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER]);
7299
7300 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP])
7301 reporter->auto_dump =
7302 nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]);
7303
7304 devlink_health_reporter_put(reporter);
7305 return 0;
7306out:
7307 devlink_health_reporter_put(reporter);
7308 return err;
7309}
7310
7311static int devlink_nl_cmd_health_reporter_recover_doit(struct sk_buff *skb,
7312 struct genl_info *info)
7313{
7314 struct devlink *devlink = info->user_ptr[0];
7315 struct devlink_health_reporter *reporter;
7316 int err;
7317
7318 reporter = devlink_health_reporter_get_from_info(devlink, info);
7319 if (!reporter)
7320 return -EINVAL;
7321
7322 err = devlink_health_reporter_recover(reporter, NULL, info->extack);
7323
7324 devlink_health_reporter_put(reporter);
7325 return err;
7326}
7327
7328static int devlink_nl_cmd_health_reporter_diagnose_doit(struct sk_buff *skb,
7329 struct genl_info *info)
7330{
7331 struct devlink *devlink = info->user_ptr[0];
7332 struct devlink_health_reporter *reporter;
7333 struct devlink_fmsg *fmsg;
7334 int err;
7335
7336 reporter = devlink_health_reporter_get_from_info(devlink, info);
7337 if (!reporter)
7338 return -EINVAL;
7339
7340 if (!reporter->ops->diagnose) {
7341 devlink_health_reporter_put(reporter);
7342 return -EOPNOTSUPP;
7343 }
7344
7345 fmsg = devlink_fmsg_alloc();
7346 if (!fmsg) {
7347 devlink_health_reporter_put(reporter);
7348 return -ENOMEM;
7349 }
7350
7351 err = devlink_fmsg_obj_nest_start(fmsg);
7352 if (err)
7353 goto out;
7354
7355 err = reporter->ops->diagnose(reporter, fmsg, info->extack);
7356 if (err)
7357 goto out;
7358
7359 err = devlink_fmsg_obj_nest_end(fmsg);
7360 if (err)
7361 goto out;
7362
7363 err = devlink_fmsg_snd(fmsg, info,
7364 DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE, 0);
7365
7366out:
7367 devlink_fmsg_free(fmsg);
7368 devlink_health_reporter_put(reporter);
7369 return err;
7370}
7371
7372static int
7373devlink_nl_cmd_health_reporter_dump_get_dumpit(struct sk_buff *skb,
7374 struct netlink_callback *cb)
7375{
7376 struct devlink_health_reporter *reporter;
7377 u64 start = cb->args[0];
7378 int err;
7379
7380 reporter = devlink_health_reporter_get_from_cb(cb);
7381 if (!reporter)
7382 return -EINVAL;
7383
7384 if (!reporter->ops->dump) {
7385 err = -EOPNOTSUPP;
7386 goto out;
7387 }
7388 mutex_lock(&reporter->dump_lock);
7389 if (!start) {
7390 err = devlink_health_do_dump(reporter, NULL, cb->extack);
7391 if (err)
7392 goto unlock;
7393 cb->args[1] = reporter->dump_ts;
7394 }
7395 if (!reporter->dump_fmsg || cb->args[1] != reporter->dump_ts) {
7396 NL_SET_ERR_MSG_MOD(cb->extack, "Dump trampled, please retry");
7397 err = -EAGAIN;
7398 goto unlock;
7399 }
7400
7401 err = devlink_fmsg_dumpit(reporter->dump_fmsg, skb, cb,
7402 DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET);
7403unlock:
7404 mutex_unlock(&reporter->dump_lock);
7405out:
7406 devlink_health_reporter_put(reporter);
7407 return err;
7408}
7409
7410static int
7411devlink_nl_cmd_health_reporter_dump_clear_doit(struct sk_buff *skb,
7412 struct genl_info *info)
7413{
7414 struct devlink *devlink = info->user_ptr[0];
7415 struct devlink_health_reporter *reporter;
7416
7417 reporter = devlink_health_reporter_get_from_info(devlink, info);
7418 if (!reporter)
7419 return -EINVAL;
7420
7421 if (!reporter->ops->dump) {
7422 devlink_health_reporter_put(reporter);
7423 return -EOPNOTSUPP;
7424 }
7425
7426 mutex_lock(&reporter->dump_lock);
7427 devlink_health_dump_clear(reporter);
7428 mutex_unlock(&reporter->dump_lock);
7429 devlink_health_reporter_put(reporter);
7430 return 0;
7431}
7432
7433static int devlink_nl_cmd_health_reporter_test_doit(struct sk_buff *skb,
7434 struct genl_info *info)
7435{
7436 struct devlink *devlink = info->user_ptr[0];
7437 struct devlink_health_reporter *reporter;
7438 int err;
7439
7440 reporter = devlink_health_reporter_get_from_info(devlink, info);
7441 if (!reporter)
7442 return -EINVAL;
7443
7444 if (!reporter->ops->test) {
7445 devlink_health_reporter_put(reporter);
7446 return -EOPNOTSUPP;
7447 }
7448
7449 err = reporter->ops->test(reporter, info->extack);
7450
7451 devlink_health_reporter_put(reporter);
7452 return err;
7453}
7454
7455struct devlink_stats {
7456 u64 rx_bytes;
7457 u64 rx_packets;
7458 struct u64_stats_sync syncp;
7459};
7460
7461
7462
7463
7464
7465
7466
7467
7468
7469
7470
7471struct devlink_trap_policer_item {
7472 const struct devlink_trap_policer *policer;
7473 u64 rate;
7474 u64 burst;
7475 struct list_head list;
7476};
7477
7478
7479
7480
7481
7482
7483
7484
7485
7486
7487
7488struct devlink_trap_group_item {
7489 const struct devlink_trap_group *group;
7490 struct devlink_trap_policer_item *policer_item;
7491 struct list_head list;
7492 struct devlink_stats __percpu *stats;
7493};
7494
7495
7496
7497
7498
7499
7500
7501
7502
7503
7504
7505
7506
7507struct devlink_trap_item {
7508 const struct devlink_trap *trap;
7509 struct devlink_trap_group_item *group_item;
7510 struct list_head list;
7511 enum devlink_trap_action action;
7512 struct devlink_stats __percpu *stats;
7513 void *priv;
7514};
7515
7516static struct devlink_trap_policer_item *
7517devlink_trap_policer_item_lookup(struct devlink *devlink, u32 id)
7518{
7519 struct devlink_trap_policer_item *policer_item;
7520
7521 list_for_each_entry(policer_item, &devlink->trap_policer_list, list) {
7522 if (policer_item->policer->id == id)
7523 return policer_item;
7524 }
7525
7526 return NULL;
7527}
7528
7529static struct devlink_trap_item *
7530devlink_trap_item_lookup(struct devlink *devlink, const char *name)
7531{
7532 struct devlink_trap_item *trap_item;
7533
7534 list_for_each_entry(trap_item, &devlink->trap_list, list) {
7535 if (!strcmp(trap_item->trap->name, name))
7536 return trap_item;
7537 }
7538
7539 return NULL;
7540}
7541
7542static struct devlink_trap_item *
7543devlink_trap_item_get_from_info(struct devlink *devlink,
7544 struct genl_info *info)
7545{
7546 struct nlattr *attr;
7547
7548 if (!info->attrs[DEVLINK_ATTR_TRAP_NAME])
7549 return NULL;
7550 attr = info->attrs[DEVLINK_ATTR_TRAP_NAME];
7551
7552 return devlink_trap_item_lookup(devlink, nla_data(attr));
7553}
7554
7555static int
7556devlink_trap_action_get_from_info(struct genl_info *info,
7557 enum devlink_trap_action *p_trap_action)
7558{
7559 u8 val;
7560
7561 val = nla_get_u8(info->attrs[DEVLINK_ATTR_TRAP_ACTION]);
7562 switch (val) {
7563 case DEVLINK_TRAP_ACTION_DROP:
7564 case DEVLINK_TRAP_ACTION_TRAP:
7565 case DEVLINK_TRAP_ACTION_MIRROR:
7566 *p_trap_action = val;
7567 break;
7568 default:
7569 return -EINVAL;
7570 }
7571
7572 return 0;
7573}
7574
7575static int devlink_trap_metadata_put(struct sk_buff *msg,
7576 const struct devlink_trap *trap)
7577{
7578 struct nlattr *attr;
7579
7580 attr = nla_nest_start(msg, DEVLINK_ATTR_TRAP_METADATA);
7581 if (!attr)
7582 return -EMSGSIZE;
7583
7584 if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_IN_PORT) &&
7585 nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_IN_PORT))
7586 goto nla_put_failure;
7587 if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_FA_COOKIE) &&
7588 nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_FA_COOKIE))
7589 goto nla_put_failure;
7590
7591 nla_nest_end(msg, attr);
7592
7593 return 0;
7594
7595nla_put_failure:
7596 nla_nest_cancel(msg, attr);
7597 return -EMSGSIZE;
7598}
7599
7600static void devlink_trap_stats_read(struct devlink_stats __percpu *trap_stats,
7601 struct devlink_stats *stats)
7602{
7603 int i;
7604
7605 memset(stats, 0, sizeof(*stats));
7606 for_each_possible_cpu(i) {
7607 struct devlink_stats *cpu_stats;
7608 u64 rx_packets, rx_bytes;
7609 unsigned int start;
7610
7611 cpu_stats = per_cpu_ptr(trap_stats, i);
7612 do {
7613 start = u64_stats_fetch_begin_irq(&cpu_stats->syncp);
7614 rx_packets = cpu_stats->rx_packets;
7615 rx_bytes = cpu_stats->rx_bytes;
7616 } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start));
7617
7618 stats->rx_packets += rx_packets;
7619 stats->rx_bytes += rx_bytes;
7620 }
7621}
7622
7623static int
7624devlink_trap_group_stats_put(struct sk_buff *msg,
7625 struct devlink_stats __percpu *trap_stats)
7626{
7627 struct devlink_stats stats;
7628 struct nlattr *attr;
7629
7630 devlink_trap_stats_read(trap_stats, &stats);
7631
7632 attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
7633 if (!attr)
7634 return -EMSGSIZE;
7635
7636 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_PACKETS,
7637 stats.rx_packets, DEVLINK_ATTR_PAD))
7638 goto nla_put_failure;
7639
7640 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_BYTES,
7641 stats.rx_bytes, DEVLINK_ATTR_PAD))
7642 goto nla_put_failure;
7643
7644 nla_nest_end(msg, attr);
7645
7646 return 0;
7647
7648nla_put_failure:
7649 nla_nest_cancel(msg, attr);
7650 return -EMSGSIZE;
7651}
7652
7653static int devlink_trap_stats_put(struct sk_buff *msg, struct devlink *devlink,
7654 const struct devlink_trap_item *trap_item)
7655{
7656 struct devlink_stats stats;
7657 struct nlattr *attr;
7658 u64 drops = 0;
7659 int err;
7660
7661 if (devlink->ops->trap_drop_counter_get) {
7662 err = devlink->ops->trap_drop_counter_get(devlink,
7663 trap_item->trap,
7664 &drops);
7665 if (err)
7666 return err;
7667 }
7668
7669 devlink_trap_stats_read(trap_item->stats, &stats);
7670
7671 attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
7672 if (!attr)
7673 return -EMSGSIZE;
7674
7675 if (devlink->ops->trap_drop_counter_get &&
7676 nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_DROPPED, drops,
7677 DEVLINK_ATTR_PAD))
7678 goto nla_put_failure;
7679
7680 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_PACKETS,
7681 stats.rx_packets, DEVLINK_ATTR_PAD))
7682 goto nla_put_failure;
7683
7684 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_BYTES,
7685 stats.rx_bytes, DEVLINK_ATTR_PAD))
7686 goto nla_put_failure;
7687
7688 nla_nest_end(msg, attr);
7689
7690 return 0;
7691
7692nla_put_failure:
7693 nla_nest_cancel(msg, attr);
7694 return -EMSGSIZE;
7695}
7696
7697static int devlink_nl_trap_fill(struct sk_buff *msg, struct devlink *devlink,
7698 const struct devlink_trap_item *trap_item,
7699 enum devlink_command cmd, u32 portid, u32 seq,
7700 int flags)
7701{
7702 struct devlink_trap_group_item *group_item = trap_item->group_item;
7703 void *hdr;
7704 int err;
7705
7706 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
7707 if (!hdr)
7708 return -EMSGSIZE;
7709
7710 if (devlink_nl_put_handle(msg, devlink))
7711 goto nla_put_failure;
7712
7713 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
7714 group_item->group->name))
7715 goto nla_put_failure;
7716
7717 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_NAME, trap_item->trap->name))
7718 goto nla_put_failure;
7719
7720 if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_TYPE, trap_item->trap->type))
7721 goto nla_put_failure;
7722
7723 if (trap_item->trap->generic &&
7724 nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
7725 goto nla_put_failure;
7726
7727 if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_ACTION, trap_item->action))
7728 goto nla_put_failure;
7729
7730 err = devlink_trap_metadata_put(msg, trap_item->trap);
7731 if (err)
7732 goto nla_put_failure;
7733
7734 err = devlink_trap_stats_put(msg, devlink, trap_item);
7735 if (err)
7736 goto nla_put_failure;
7737
7738 genlmsg_end(msg, hdr);
7739
7740 return 0;
7741
7742nla_put_failure:
7743 genlmsg_cancel(msg, hdr);
7744 return -EMSGSIZE;
7745}
7746
7747static int devlink_nl_cmd_trap_get_doit(struct sk_buff *skb,
7748 struct genl_info *info)
7749{
7750 struct netlink_ext_ack *extack = info->extack;
7751 struct devlink *devlink = info->user_ptr[0];
7752 struct devlink_trap_item *trap_item;
7753 struct sk_buff *msg;
7754 int err;
7755
7756 if (list_empty(&devlink->trap_list))
7757 return -EOPNOTSUPP;
7758
7759 trap_item = devlink_trap_item_get_from_info(devlink, info);
7760 if (!trap_item) {
7761 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
7762 return -ENOENT;
7763 }
7764
7765 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7766 if (!msg)
7767 return -ENOMEM;
7768
7769 err = devlink_nl_trap_fill(msg, devlink, trap_item,
7770 DEVLINK_CMD_TRAP_NEW, info->snd_portid,
7771 info->snd_seq, 0);
7772 if (err)
7773 goto err_trap_fill;
7774
7775 return genlmsg_reply(msg, info);
7776
7777err_trap_fill:
7778 nlmsg_free(msg);
7779 return err;
7780}
7781
7782static int devlink_nl_cmd_trap_get_dumpit(struct sk_buff *msg,
7783 struct netlink_callback *cb)
7784{
7785 struct devlink_trap_item *trap_item;
7786 struct devlink *devlink;
7787 int start = cb->args[0];
7788 unsigned long index;
7789 int idx = 0;
7790 int err;
7791
7792 mutex_lock(&devlink_mutex);
7793 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
7794 if (!devlink_try_get(devlink))
7795 continue;
7796
7797 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
7798 goto retry;
7799
7800 mutex_lock(&devlink->lock);
7801 list_for_each_entry(trap_item, &devlink->trap_list, list) {
7802 if (idx < start) {
7803 idx++;
7804 continue;
7805 }
7806 err = devlink_nl_trap_fill(msg, devlink, trap_item,
7807 DEVLINK_CMD_TRAP_NEW,
7808 NETLINK_CB(cb->skb).portid,
7809 cb->nlh->nlmsg_seq,
7810 NLM_F_MULTI);
7811 if (err) {
7812 mutex_unlock(&devlink->lock);
7813 devlink_put(devlink);
7814 goto out;
7815 }
7816 idx++;
7817 }
7818 mutex_unlock(&devlink->lock);
7819retry:
7820 devlink_put(devlink);
7821 }
7822out:
7823 mutex_unlock(&devlink_mutex);
7824
7825 cb->args[0] = idx;
7826 return msg->len;
7827}
7828
7829static int __devlink_trap_action_set(struct devlink *devlink,
7830 struct devlink_trap_item *trap_item,
7831 enum devlink_trap_action trap_action,
7832 struct netlink_ext_ack *extack)
7833{
7834 int err;
7835
7836 if (trap_item->action != trap_action &&
7837 trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP) {
7838 NL_SET_ERR_MSG_MOD(extack, "Cannot change action of non-drop traps. Skipping");
7839 return 0;
7840 }
7841
7842 err = devlink->ops->trap_action_set(devlink, trap_item->trap,
7843 trap_action, extack);
7844 if (err)
7845 return err;
7846
7847 trap_item->action = trap_action;
7848
7849 return 0;
7850}
7851
7852static int devlink_trap_action_set(struct devlink *devlink,
7853 struct devlink_trap_item *trap_item,
7854 struct genl_info *info)
7855{
7856 enum devlink_trap_action trap_action;
7857 int err;
7858
7859 if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
7860 return 0;
7861
7862 err = devlink_trap_action_get_from_info(info, &trap_action);
7863 if (err) {
7864 NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
7865 return -EINVAL;
7866 }
7867
7868 return __devlink_trap_action_set(devlink, trap_item, trap_action,
7869 info->extack);
7870}
7871
7872static int devlink_nl_cmd_trap_set_doit(struct sk_buff *skb,
7873 struct genl_info *info)
7874{
7875 struct netlink_ext_ack *extack = info->extack;
7876 struct devlink *devlink = info->user_ptr[0];
7877 struct devlink_trap_item *trap_item;
7878
7879 if (list_empty(&devlink->trap_list))
7880 return -EOPNOTSUPP;
7881
7882 trap_item = devlink_trap_item_get_from_info(devlink, info);
7883 if (!trap_item) {
7884 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
7885 return -ENOENT;
7886 }
7887
7888 return devlink_trap_action_set(devlink, trap_item, info);
7889}
7890
7891static struct devlink_trap_group_item *
7892devlink_trap_group_item_lookup(struct devlink *devlink, const char *name)
7893{
7894 struct devlink_trap_group_item *group_item;
7895
7896 list_for_each_entry(group_item, &devlink->trap_group_list, list) {
7897 if (!strcmp(group_item->group->name, name))
7898 return group_item;
7899 }
7900
7901 return NULL;
7902}
7903
7904static struct devlink_trap_group_item *
7905devlink_trap_group_item_lookup_by_id(struct devlink *devlink, u16 id)
7906{
7907 struct devlink_trap_group_item *group_item;
7908
7909 list_for_each_entry(group_item, &devlink->trap_group_list, list) {
7910 if (group_item->group->id == id)
7911 return group_item;
7912 }
7913
7914 return NULL;
7915}
7916
7917static struct devlink_trap_group_item *
7918devlink_trap_group_item_get_from_info(struct devlink *devlink,
7919 struct genl_info *info)
7920{
7921 char *name;
7922
7923 if (!info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME])
7924 return NULL;
7925 name = nla_data(info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME]);
7926
7927 return devlink_trap_group_item_lookup(devlink, name);
7928}
7929
7930static int
7931devlink_nl_trap_group_fill(struct sk_buff *msg, struct devlink *devlink,
7932 const struct devlink_trap_group_item *group_item,
7933 enum devlink_command cmd, u32 portid, u32 seq,
7934 int flags)
7935{
7936 void *hdr;
7937 int err;
7938
7939 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
7940 if (!hdr)
7941 return -EMSGSIZE;
7942
7943 if (devlink_nl_put_handle(msg, devlink))
7944 goto nla_put_failure;
7945
7946 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
7947 group_item->group->name))
7948 goto nla_put_failure;
7949
7950 if (group_item->group->generic &&
7951 nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
7952 goto nla_put_failure;
7953
7954 if (group_item->policer_item &&
7955 nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID,
7956 group_item->policer_item->policer->id))
7957 goto nla_put_failure;
7958
7959 err = devlink_trap_group_stats_put(msg, group_item->stats);
7960 if (err)
7961 goto nla_put_failure;
7962
7963 genlmsg_end(msg, hdr);
7964
7965 return 0;
7966
7967nla_put_failure:
7968 genlmsg_cancel(msg, hdr);
7969 return -EMSGSIZE;
7970}
7971
7972static int devlink_nl_cmd_trap_group_get_doit(struct sk_buff *skb,
7973 struct genl_info *info)
7974{
7975 struct netlink_ext_ack *extack = info->extack;
7976 struct devlink *devlink = info->user_ptr[0];
7977 struct devlink_trap_group_item *group_item;
7978 struct sk_buff *msg;
7979 int err;
7980
7981 if (list_empty(&devlink->trap_group_list))
7982 return -EOPNOTSUPP;
7983
7984 group_item = devlink_trap_group_item_get_from_info(devlink, info);
7985 if (!group_item) {
7986 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
7987 return -ENOENT;
7988 }
7989
7990 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7991 if (!msg)
7992 return -ENOMEM;
7993
7994 err = devlink_nl_trap_group_fill(msg, devlink, group_item,
7995 DEVLINK_CMD_TRAP_GROUP_NEW,
7996 info->snd_portid, info->snd_seq, 0);
7997 if (err)
7998 goto err_trap_group_fill;
7999
8000 return genlmsg_reply(msg, info);
8001
8002err_trap_group_fill:
8003 nlmsg_free(msg);
8004 return err;
8005}
8006
8007static int devlink_nl_cmd_trap_group_get_dumpit(struct sk_buff *msg,
8008 struct netlink_callback *cb)
8009{
8010 enum devlink_command cmd = DEVLINK_CMD_TRAP_GROUP_NEW;
8011 struct devlink_trap_group_item *group_item;
8012 u32 portid = NETLINK_CB(cb->skb).portid;
8013 struct devlink *devlink;
8014 int start = cb->args[0];
8015 unsigned long index;
8016 int idx = 0;
8017 int err;
8018
8019 mutex_lock(&devlink_mutex);
8020 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
8021 if (!devlink_try_get(devlink))
8022 continue;
8023
8024 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
8025 goto retry;
8026
8027 mutex_lock(&devlink->lock);
8028 list_for_each_entry(group_item, &devlink->trap_group_list,
8029 list) {
8030 if (idx < start) {
8031 idx++;
8032 continue;
8033 }
8034 err = devlink_nl_trap_group_fill(msg, devlink,
8035 group_item, cmd,
8036 portid,
8037 cb->nlh->nlmsg_seq,
8038 NLM_F_MULTI);
8039 if (err) {
8040 mutex_unlock(&devlink->lock);
8041 devlink_put(devlink);
8042 goto out;
8043 }
8044 idx++;
8045 }
8046 mutex_unlock(&devlink->lock);
8047retry:
8048 devlink_put(devlink);
8049 }
8050out:
8051 mutex_unlock(&devlink_mutex);
8052
8053 cb->args[0] = idx;
8054 return msg->len;
8055}
8056
8057static int
8058__devlink_trap_group_action_set(struct devlink *devlink,
8059 struct devlink_trap_group_item *group_item,
8060 enum devlink_trap_action trap_action,
8061 struct netlink_ext_ack *extack)
8062{
8063 const char *group_name = group_item->group->name;
8064 struct devlink_trap_item *trap_item;
8065 int err;
8066
8067 if (devlink->ops->trap_group_action_set) {
8068 err = devlink->ops->trap_group_action_set(devlink, group_item->group,
8069 trap_action, extack);
8070 if (err)
8071 return err;
8072
8073 list_for_each_entry(trap_item, &devlink->trap_list, list) {
8074 if (strcmp(trap_item->group_item->group->name, group_name))
8075 continue;
8076 if (trap_item->action != trap_action &&
8077 trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP)
8078 continue;
8079 trap_item->action = trap_action;
8080 }
8081
8082 return 0;
8083 }
8084
8085 list_for_each_entry(trap_item, &devlink->trap_list, list) {
8086 if (strcmp(trap_item->group_item->group->name, group_name))
8087 continue;
8088 err = __devlink_trap_action_set(devlink, trap_item,
8089 trap_action, extack);
8090 if (err)
8091 return err;
8092 }
8093
8094 return 0;
8095}
8096
8097static int
8098devlink_trap_group_action_set(struct devlink *devlink,
8099 struct devlink_trap_group_item *group_item,
8100 struct genl_info *info, bool *p_modified)
8101{
8102 enum devlink_trap_action trap_action;
8103 int err;
8104
8105 if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
8106 return 0;
8107
8108 err = devlink_trap_action_get_from_info(info, &trap_action);
8109 if (err) {
8110 NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
8111 return -EINVAL;
8112 }
8113
8114 err = __devlink_trap_group_action_set(devlink, group_item, trap_action,
8115 info->extack);
8116 if (err)
8117 return err;
8118
8119 *p_modified = true;
8120
8121 return 0;
8122}
8123
8124static int devlink_trap_group_set(struct devlink *devlink,
8125 struct devlink_trap_group_item *group_item,
8126 struct genl_info *info)
8127{
8128 struct devlink_trap_policer_item *policer_item;
8129 struct netlink_ext_ack *extack = info->extack;
8130 const struct devlink_trap_policer *policer;
8131 struct nlattr **attrs = info->attrs;
8132 int err;
8133
8134 if (!attrs[DEVLINK_ATTR_TRAP_POLICER_ID])
8135 return 0;
8136
8137 if (!devlink->ops->trap_group_set)
8138 return -EOPNOTSUPP;
8139
8140 policer_item = group_item->policer_item;
8141 if (attrs[DEVLINK_ATTR_TRAP_POLICER_ID]) {
8142 u32 policer_id;
8143
8144 policer_id = nla_get_u32(attrs[DEVLINK_ATTR_TRAP_POLICER_ID]);
8145 policer_item = devlink_trap_policer_item_lookup(devlink,
8146 policer_id);
8147 if (policer_id && !policer_item) {
8148 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
8149 return -ENOENT;
8150 }
8151 }
8152 policer = policer_item ? policer_item->policer : NULL;
8153
8154 err = devlink->ops->trap_group_set(devlink, group_item->group, policer,
8155 extack);
8156 if (err)
8157 return err;
8158
8159 group_item->policer_item = policer_item;
8160
8161 return 0;
8162}
8163
8164static int devlink_nl_cmd_trap_group_set_doit(struct sk_buff *skb,
8165 struct genl_info *info)
8166{
8167 struct netlink_ext_ack *extack = info->extack;
8168 struct devlink *devlink = info->user_ptr[0];
8169 struct devlink_trap_group_item *group_item;
8170 bool modified = false;
8171 int err;
8172
8173 if (list_empty(&devlink->trap_group_list))
8174 return -EOPNOTSUPP;
8175
8176 group_item = devlink_trap_group_item_get_from_info(devlink, info);
8177 if (!group_item) {
8178 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
8179 return -ENOENT;
8180 }
8181
8182 err = devlink_trap_group_action_set(devlink, group_item, info,
8183 &modified);
8184 if (err)
8185 return err;
8186
8187 err = devlink_trap_group_set(devlink, group_item, info);
8188 if (err)
8189 goto err_trap_group_set;
8190
8191 return 0;
8192
8193err_trap_group_set:
8194 if (modified)
8195 NL_SET_ERR_MSG_MOD(extack, "Trap group set failed, but some changes were committed already");
8196 return err;
8197}
8198
8199static struct devlink_trap_policer_item *
8200devlink_trap_policer_item_get_from_info(struct devlink *devlink,
8201 struct genl_info *info)
8202{
8203 u32 id;
8204
8205 if (!info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID])
8206 return NULL;
8207 id = nla_get_u32(info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID]);
8208
8209 return devlink_trap_policer_item_lookup(devlink, id);
8210}
8211
8212static int
8213devlink_trap_policer_stats_put(struct sk_buff *msg, struct devlink *devlink,
8214 const struct devlink_trap_policer *policer)
8215{
8216 struct nlattr *attr;
8217 u64 drops;
8218 int err;
8219
8220 if (!devlink->ops->trap_policer_counter_get)
8221 return 0;
8222
8223 err = devlink->ops->trap_policer_counter_get(devlink, policer, &drops);
8224 if (err)
8225 return err;
8226
8227 attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
8228 if (!attr)
8229 return -EMSGSIZE;
8230
8231 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_DROPPED, drops,
8232 DEVLINK_ATTR_PAD))
8233 goto nla_put_failure;
8234
8235 nla_nest_end(msg, attr);
8236
8237 return 0;
8238
8239nla_put_failure:
8240 nla_nest_cancel(msg, attr);
8241 return -EMSGSIZE;
8242}
8243
8244static int
8245devlink_nl_trap_policer_fill(struct sk_buff *msg, struct devlink *devlink,
8246 const struct devlink_trap_policer_item *policer_item,
8247 enum devlink_command cmd, u32 portid, u32 seq,
8248 int flags)
8249{
8250 void *hdr;
8251 int err;
8252
8253 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
8254 if (!hdr)
8255 return -EMSGSIZE;
8256
8257 if (devlink_nl_put_handle(msg, devlink))
8258 goto nla_put_failure;
8259
8260 if (nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID,
8261 policer_item->policer->id))
8262 goto nla_put_failure;
8263
8264 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_RATE,
8265 policer_item->rate, DEVLINK_ATTR_PAD))
8266 goto nla_put_failure;
8267
8268 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_BURST,
8269 policer_item->burst, DEVLINK_ATTR_PAD))
8270 goto nla_put_failure;
8271
8272 err = devlink_trap_policer_stats_put(msg, devlink,
8273 policer_item->policer);
8274 if (err)
8275 goto nla_put_failure;
8276
8277 genlmsg_end(msg, hdr);
8278
8279 return 0;
8280
8281nla_put_failure:
8282 genlmsg_cancel(msg, hdr);
8283 return -EMSGSIZE;
8284}
8285
8286static int devlink_nl_cmd_trap_policer_get_doit(struct sk_buff *skb,
8287 struct genl_info *info)
8288{
8289 struct devlink_trap_policer_item *policer_item;
8290 struct netlink_ext_ack *extack = info->extack;
8291 struct devlink *devlink = info->user_ptr[0];
8292 struct sk_buff *msg;
8293 int err;
8294
8295 if (list_empty(&devlink->trap_policer_list))
8296 return -EOPNOTSUPP;
8297
8298 policer_item = devlink_trap_policer_item_get_from_info(devlink, info);
8299 if (!policer_item) {
8300 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
8301 return -ENOENT;
8302 }
8303
8304 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8305 if (!msg)
8306 return -ENOMEM;
8307
8308 err = devlink_nl_trap_policer_fill(msg, devlink, policer_item,
8309 DEVLINK_CMD_TRAP_POLICER_NEW,
8310 info->snd_portid, info->snd_seq, 0);
8311 if (err)
8312 goto err_trap_policer_fill;
8313
8314 return genlmsg_reply(msg, info);
8315
8316err_trap_policer_fill:
8317 nlmsg_free(msg);
8318 return err;
8319}
8320
8321static int devlink_nl_cmd_trap_policer_get_dumpit(struct sk_buff *msg,
8322 struct netlink_callback *cb)
8323{
8324 enum devlink_command cmd = DEVLINK_CMD_TRAP_POLICER_NEW;
8325 struct devlink_trap_policer_item *policer_item;
8326 u32 portid = NETLINK_CB(cb->skb).portid;
8327 struct devlink *devlink;
8328 int start = cb->args[0];
8329 unsigned long index;
8330 int idx = 0;
8331 int err;
8332
8333 mutex_lock(&devlink_mutex);
8334 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
8335 if (!devlink_try_get(devlink))
8336 continue;
8337
8338 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
8339 goto retry;
8340
8341 mutex_lock(&devlink->lock);
8342 list_for_each_entry(policer_item, &devlink->trap_policer_list,
8343 list) {
8344 if (idx < start) {
8345 idx++;
8346 continue;
8347 }
8348 err = devlink_nl_trap_policer_fill(msg, devlink,
8349 policer_item, cmd,
8350 portid,
8351 cb->nlh->nlmsg_seq,
8352 NLM_F_MULTI);
8353 if (err) {
8354 mutex_unlock(&devlink->lock);
8355 devlink_put(devlink);
8356 goto out;
8357 }
8358 idx++;
8359 }
8360 mutex_unlock(&devlink->lock);
8361retry:
8362 devlink_put(devlink);
8363 }
8364out:
8365 mutex_unlock(&devlink_mutex);
8366
8367 cb->args[0] = idx;
8368 return msg->len;
8369}
8370
8371static int
8372devlink_trap_policer_set(struct devlink *devlink,
8373 struct devlink_trap_policer_item *policer_item,
8374 struct genl_info *info)
8375{
8376 struct netlink_ext_ack *extack = info->extack;
8377 struct nlattr **attrs = info->attrs;
8378 u64 rate, burst;
8379 int err;
8380
8381 rate = policer_item->rate;
8382 burst = policer_item->burst;
8383
8384 if (attrs[DEVLINK_ATTR_TRAP_POLICER_RATE])
8385 rate = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_RATE]);
8386
8387 if (attrs[DEVLINK_ATTR_TRAP_POLICER_BURST])
8388 burst = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_BURST]);
8389
8390 if (rate < policer_item->policer->min_rate) {
8391 NL_SET_ERR_MSG_MOD(extack, "Policer rate lower than limit");
8392 return -EINVAL;
8393 }
8394
8395 if (rate > policer_item->policer->max_rate) {
8396 NL_SET_ERR_MSG_MOD(extack, "Policer rate higher than limit");
8397 return -EINVAL;
8398 }
8399
8400 if (burst < policer_item->policer->min_burst) {
8401 NL_SET_ERR_MSG_MOD(extack, "Policer burst size lower than limit");
8402 return -EINVAL;
8403 }
8404
8405 if (burst > policer_item->policer->max_burst) {
8406 NL_SET_ERR_MSG_MOD(extack, "Policer burst size higher than limit");
8407 return -EINVAL;
8408 }
8409
8410 err = devlink->ops->trap_policer_set(devlink, policer_item->policer,
8411 rate, burst, info->extack);
8412 if (err)
8413 return err;
8414
8415 policer_item->rate = rate;
8416 policer_item->burst = burst;
8417
8418 return 0;
8419}
8420
8421static int devlink_nl_cmd_trap_policer_set_doit(struct sk_buff *skb,
8422 struct genl_info *info)
8423{
8424 struct devlink_trap_policer_item *policer_item;
8425 struct netlink_ext_ack *extack = info->extack;
8426 struct devlink *devlink = info->user_ptr[0];
8427
8428 if (list_empty(&devlink->trap_policer_list))
8429 return -EOPNOTSUPP;
8430
8431 if (!devlink->ops->trap_policer_set)
8432 return -EOPNOTSUPP;
8433
8434 policer_item = devlink_trap_policer_item_get_from_info(devlink, info);
8435 if (!policer_item) {
8436 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
8437 return -ENOENT;
8438 }
8439
8440 return devlink_trap_policer_set(devlink, policer_item, info);
8441}
8442
8443static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = {
8444 [DEVLINK_ATTR_UNSPEC] = { .strict_start_type =
8445 DEVLINK_ATTR_TRAP_POLICER_ID },
8446 [DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING },
8447 [DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING },
8448 [DEVLINK_ATTR_PORT_INDEX] = { .type = NLA_U32 },
8449 [DEVLINK_ATTR_PORT_TYPE] = NLA_POLICY_RANGE(NLA_U16, DEVLINK_PORT_TYPE_AUTO,
8450 DEVLINK_PORT_TYPE_IB),
8451 [DEVLINK_ATTR_PORT_SPLIT_COUNT] = { .type = NLA_U32 },
8452 [DEVLINK_ATTR_SB_INDEX] = { .type = NLA_U32 },
8453 [DEVLINK_ATTR_SB_POOL_INDEX] = { .type = NLA_U16 },
8454 [DEVLINK_ATTR_SB_POOL_TYPE] = { .type = NLA_U8 },
8455 [DEVLINK_ATTR_SB_POOL_SIZE] = { .type = NLA_U32 },
8456 [DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE] = { .type = NLA_U8 },
8457 [DEVLINK_ATTR_SB_THRESHOLD] = { .type = NLA_U32 },
8458 [DEVLINK_ATTR_SB_TC_INDEX] = { .type = NLA_U16 },
8459 [DEVLINK_ATTR_ESWITCH_MODE] = NLA_POLICY_RANGE(NLA_U16, DEVLINK_ESWITCH_MODE_LEGACY,
8460 DEVLINK_ESWITCH_MODE_SWITCHDEV),
8461 [DEVLINK_ATTR_ESWITCH_INLINE_MODE] = { .type = NLA_U8 },
8462 [DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = { .type = NLA_U8 },
8463 [DEVLINK_ATTR_DPIPE_TABLE_NAME] = { .type = NLA_NUL_STRING },
8464 [DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED] = { .type = NLA_U8 },
8465 [DEVLINK_ATTR_RESOURCE_ID] = { .type = NLA_U64},
8466 [DEVLINK_ATTR_RESOURCE_SIZE] = { .type = NLA_U64},
8467 [DEVLINK_ATTR_PARAM_NAME] = { .type = NLA_NUL_STRING },
8468 [DEVLINK_ATTR_PARAM_TYPE] = { .type = NLA_U8 },
8469 [DEVLINK_ATTR_PARAM_VALUE_CMODE] = { .type = NLA_U8 },
8470 [DEVLINK_ATTR_REGION_NAME] = { .type = NLA_NUL_STRING },
8471 [DEVLINK_ATTR_REGION_SNAPSHOT_ID] = { .type = NLA_U32 },
8472 [DEVLINK_ATTR_REGION_CHUNK_ADDR] = { .type = NLA_U64 },
8473 [DEVLINK_ATTR_REGION_CHUNK_LEN] = { .type = NLA_U64 },
8474 [DEVLINK_ATTR_HEALTH_REPORTER_NAME] = { .type = NLA_NUL_STRING },
8475 [DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] = { .type = NLA_U64 },
8476 [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER] = { .type = NLA_U8 },
8477 [DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME] = { .type = NLA_NUL_STRING },
8478 [DEVLINK_ATTR_FLASH_UPDATE_COMPONENT] = { .type = NLA_NUL_STRING },
8479 [DEVLINK_ATTR_FLASH_UPDATE_OVERWRITE_MASK] =
8480 NLA_POLICY_BITFIELD32(DEVLINK_SUPPORTED_FLASH_OVERWRITE_SECTIONS),
8481 [DEVLINK_ATTR_TRAP_NAME] = { .type = NLA_NUL_STRING },
8482 [DEVLINK_ATTR_TRAP_ACTION] = { .type = NLA_U8 },
8483 [DEVLINK_ATTR_TRAP_GROUP_NAME] = { .type = NLA_NUL_STRING },
8484 [DEVLINK_ATTR_NETNS_PID] = { .type = NLA_U32 },
8485 [DEVLINK_ATTR_NETNS_FD] = { .type = NLA_U32 },
8486 [DEVLINK_ATTR_NETNS_ID] = { .type = NLA_U32 },
8487 [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP] = { .type = NLA_U8 },
8488 [DEVLINK_ATTR_TRAP_POLICER_ID] = { .type = NLA_U32 },
8489 [DEVLINK_ATTR_TRAP_POLICER_RATE] = { .type = NLA_U64 },
8490 [DEVLINK_ATTR_TRAP_POLICER_BURST] = { .type = NLA_U64 },
8491 [DEVLINK_ATTR_PORT_FUNCTION] = { .type = NLA_NESTED },
8492 [DEVLINK_ATTR_RELOAD_ACTION] = NLA_POLICY_RANGE(NLA_U8, DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
8493 DEVLINK_RELOAD_ACTION_MAX),
8494 [DEVLINK_ATTR_RELOAD_LIMITS] = NLA_POLICY_BITFIELD32(DEVLINK_RELOAD_LIMITS_VALID_MASK),
8495 [DEVLINK_ATTR_PORT_FLAVOUR] = { .type = NLA_U16 },
8496 [DEVLINK_ATTR_PORT_PCI_PF_NUMBER] = { .type = NLA_U16 },
8497 [DEVLINK_ATTR_PORT_PCI_SF_NUMBER] = { .type = NLA_U32 },
8498 [DEVLINK_ATTR_PORT_CONTROLLER_NUMBER] = { .type = NLA_U32 },
8499 [DEVLINK_ATTR_RATE_TYPE] = { .type = NLA_U16 },
8500 [DEVLINK_ATTR_RATE_TX_SHARE] = { .type = NLA_U64 },
8501 [DEVLINK_ATTR_RATE_TX_MAX] = { .type = NLA_U64 },
8502 [DEVLINK_ATTR_RATE_NODE_NAME] = { .type = NLA_NUL_STRING },
8503 [DEVLINK_ATTR_RATE_PARENT_NODE_NAME] = { .type = NLA_NUL_STRING },
8504};
8505
8506static const struct genl_small_ops devlink_nl_ops[] = {
8507 {
8508 .cmd = DEVLINK_CMD_GET,
8509 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8510 .doit = devlink_nl_cmd_get_doit,
8511 .dumpit = devlink_nl_cmd_get_dumpit,
8512
8513 },
8514 {
8515 .cmd = DEVLINK_CMD_PORT_GET,
8516 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8517 .doit = devlink_nl_cmd_port_get_doit,
8518 .dumpit = devlink_nl_cmd_port_get_dumpit,
8519 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
8520
8521 },
8522 {
8523 .cmd = DEVLINK_CMD_PORT_SET,
8524 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8525 .doit = devlink_nl_cmd_port_set_doit,
8526 .flags = GENL_ADMIN_PERM,
8527 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
8528 },
8529 {
8530 .cmd = DEVLINK_CMD_RATE_GET,
8531 .doit = devlink_nl_cmd_rate_get_doit,
8532 .dumpit = devlink_nl_cmd_rate_get_dumpit,
8533 .internal_flags = DEVLINK_NL_FLAG_NEED_RATE,
8534
8535 },
8536 {
8537 .cmd = DEVLINK_CMD_RATE_SET,
8538 .doit = devlink_nl_cmd_rate_set_doit,
8539 .flags = GENL_ADMIN_PERM,
8540 .internal_flags = DEVLINK_NL_FLAG_NEED_RATE,
8541 },
8542 {
8543 .cmd = DEVLINK_CMD_RATE_NEW,
8544 .doit = devlink_nl_cmd_rate_new_doit,
8545 .flags = GENL_ADMIN_PERM,
8546 },
8547 {
8548 .cmd = DEVLINK_CMD_RATE_DEL,
8549 .doit = devlink_nl_cmd_rate_del_doit,
8550 .flags = GENL_ADMIN_PERM,
8551 .internal_flags = DEVLINK_NL_FLAG_NEED_RATE_NODE,
8552 },
8553 {
8554 .cmd = DEVLINK_CMD_PORT_SPLIT,
8555 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8556 .doit = devlink_nl_cmd_port_split_doit,
8557 .flags = GENL_ADMIN_PERM,
8558 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
8559 },
8560 {
8561 .cmd = DEVLINK_CMD_PORT_UNSPLIT,
8562 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8563 .doit = devlink_nl_cmd_port_unsplit_doit,
8564 .flags = GENL_ADMIN_PERM,
8565 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
8566 },
8567 {
8568 .cmd = DEVLINK_CMD_PORT_NEW,
8569 .doit = devlink_nl_cmd_port_new_doit,
8570 .flags = GENL_ADMIN_PERM,
8571 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
8572 },
8573 {
8574 .cmd = DEVLINK_CMD_PORT_DEL,
8575 .doit = devlink_nl_cmd_port_del_doit,
8576 .flags = GENL_ADMIN_PERM,
8577 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
8578 },
8579 {
8580 .cmd = DEVLINK_CMD_SB_GET,
8581 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8582 .doit = devlink_nl_cmd_sb_get_doit,
8583 .dumpit = devlink_nl_cmd_sb_get_dumpit,
8584
8585 },
8586 {
8587 .cmd = DEVLINK_CMD_SB_POOL_GET,
8588 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8589 .doit = devlink_nl_cmd_sb_pool_get_doit,
8590 .dumpit = devlink_nl_cmd_sb_pool_get_dumpit,
8591
8592 },
8593 {
8594 .cmd = DEVLINK_CMD_SB_POOL_SET,
8595 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8596 .doit = devlink_nl_cmd_sb_pool_set_doit,
8597 .flags = GENL_ADMIN_PERM,
8598 },
8599 {
8600 .cmd = DEVLINK_CMD_SB_PORT_POOL_GET,
8601 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8602 .doit = devlink_nl_cmd_sb_port_pool_get_doit,
8603 .dumpit = devlink_nl_cmd_sb_port_pool_get_dumpit,
8604 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
8605
8606 },
8607 {
8608 .cmd = DEVLINK_CMD_SB_PORT_POOL_SET,
8609 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8610 .doit = devlink_nl_cmd_sb_port_pool_set_doit,
8611 .flags = GENL_ADMIN_PERM,
8612 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
8613 },
8614 {
8615 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_GET,
8616 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8617 .doit = devlink_nl_cmd_sb_tc_pool_bind_get_doit,
8618 .dumpit = devlink_nl_cmd_sb_tc_pool_bind_get_dumpit,
8619 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
8620
8621 },
8622 {
8623 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_SET,
8624 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8625 .doit = devlink_nl_cmd_sb_tc_pool_bind_set_doit,
8626 .flags = GENL_ADMIN_PERM,
8627 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
8628 },
8629 {
8630 .cmd = DEVLINK_CMD_SB_OCC_SNAPSHOT,
8631 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8632 .doit = devlink_nl_cmd_sb_occ_snapshot_doit,
8633 .flags = GENL_ADMIN_PERM,
8634 },
8635 {
8636 .cmd = DEVLINK_CMD_SB_OCC_MAX_CLEAR,
8637 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8638 .doit = devlink_nl_cmd_sb_occ_max_clear_doit,
8639 .flags = GENL_ADMIN_PERM,
8640 },
8641 {
8642 .cmd = DEVLINK_CMD_ESWITCH_GET,
8643 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8644 .doit = devlink_nl_cmd_eswitch_get_doit,
8645 .flags = GENL_ADMIN_PERM,
8646 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
8647 },
8648 {
8649 .cmd = DEVLINK_CMD_ESWITCH_SET,
8650 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8651 .doit = devlink_nl_cmd_eswitch_set_doit,
8652 .flags = GENL_ADMIN_PERM,
8653 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
8654 },
8655 {
8656 .cmd = DEVLINK_CMD_DPIPE_TABLE_GET,
8657 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8658 .doit = devlink_nl_cmd_dpipe_table_get,
8659
8660 },
8661 {
8662 .cmd = DEVLINK_CMD_DPIPE_ENTRIES_GET,
8663 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8664 .doit = devlink_nl_cmd_dpipe_entries_get,
8665
8666 },
8667 {
8668 .cmd = DEVLINK_CMD_DPIPE_HEADERS_GET,
8669 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8670 .doit = devlink_nl_cmd_dpipe_headers_get,
8671
8672 },
8673 {
8674 .cmd = DEVLINK_CMD_DPIPE_TABLE_COUNTERS_SET,
8675 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8676 .doit = devlink_nl_cmd_dpipe_table_counters_set,
8677 .flags = GENL_ADMIN_PERM,
8678 },
8679 {
8680 .cmd = DEVLINK_CMD_RESOURCE_SET,
8681 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8682 .doit = devlink_nl_cmd_resource_set,
8683 .flags = GENL_ADMIN_PERM,
8684 },
8685 {
8686 .cmd = DEVLINK_CMD_RESOURCE_DUMP,
8687 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8688 .doit = devlink_nl_cmd_resource_dump,
8689
8690 },
8691 {
8692 .cmd = DEVLINK_CMD_RELOAD,
8693 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8694 .doit = devlink_nl_cmd_reload,
8695 .flags = GENL_ADMIN_PERM,
8696 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
8697 },
8698 {
8699 .cmd = DEVLINK_CMD_PARAM_GET,
8700 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8701 .doit = devlink_nl_cmd_param_get_doit,
8702 .dumpit = devlink_nl_cmd_param_get_dumpit,
8703
8704 },
8705 {
8706 .cmd = DEVLINK_CMD_PARAM_SET,
8707 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8708 .doit = devlink_nl_cmd_param_set_doit,
8709 .flags = GENL_ADMIN_PERM,
8710 },
8711 {
8712 .cmd = DEVLINK_CMD_PORT_PARAM_GET,
8713 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8714 .doit = devlink_nl_cmd_port_param_get_doit,
8715 .dumpit = devlink_nl_cmd_port_param_get_dumpit,
8716 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
8717
8718 },
8719 {
8720 .cmd = DEVLINK_CMD_PORT_PARAM_SET,
8721 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8722 .doit = devlink_nl_cmd_port_param_set_doit,
8723 .flags = GENL_ADMIN_PERM,
8724 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
8725 },
8726 {
8727 .cmd = DEVLINK_CMD_REGION_GET,
8728 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8729 .doit = devlink_nl_cmd_region_get_doit,
8730 .dumpit = devlink_nl_cmd_region_get_dumpit,
8731 .flags = GENL_ADMIN_PERM,
8732 },
8733 {
8734 .cmd = DEVLINK_CMD_REGION_NEW,
8735 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8736 .doit = devlink_nl_cmd_region_new,
8737 .flags = GENL_ADMIN_PERM,
8738 },
8739 {
8740 .cmd = DEVLINK_CMD_REGION_DEL,
8741 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8742 .doit = devlink_nl_cmd_region_del,
8743 .flags = GENL_ADMIN_PERM,
8744 },
8745 {
8746 .cmd = DEVLINK_CMD_REGION_READ,
8747 .validate = GENL_DONT_VALIDATE_STRICT |
8748 GENL_DONT_VALIDATE_DUMP_STRICT,
8749 .dumpit = devlink_nl_cmd_region_read_dumpit,
8750 .flags = GENL_ADMIN_PERM,
8751 },
8752 {
8753 .cmd = DEVLINK_CMD_INFO_GET,
8754 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8755 .doit = devlink_nl_cmd_info_get_doit,
8756 .dumpit = devlink_nl_cmd_info_get_dumpit,
8757
8758 },
8759 {
8760 .cmd = DEVLINK_CMD_HEALTH_REPORTER_GET,
8761 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8762 .doit = devlink_nl_cmd_health_reporter_get_doit,
8763 .dumpit = devlink_nl_cmd_health_reporter_get_dumpit,
8764 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
8765 DEVLINK_NL_FLAG_NO_LOCK,
8766
8767 },
8768 {
8769 .cmd = DEVLINK_CMD_HEALTH_REPORTER_SET,
8770 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8771 .doit = devlink_nl_cmd_health_reporter_set_doit,
8772 .flags = GENL_ADMIN_PERM,
8773 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
8774 DEVLINK_NL_FLAG_NO_LOCK,
8775 },
8776 {
8777 .cmd = DEVLINK_CMD_HEALTH_REPORTER_RECOVER,
8778 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8779 .doit = devlink_nl_cmd_health_reporter_recover_doit,
8780 .flags = GENL_ADMIN_PERM,
8781 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
8782 DEVLINK_NL_FLAG_NO_LOCK,
8783 },
8784 {
8785 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE,
8786 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8787 .doit = devlink_nl_cmd_health_reporter_diagnose_doit,
8788 .flags = GENL_ADMIN_PERM,
8789 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
8790 DEVLINK_NL_FLAG_NO_LOCK,
8791 },
8792 {
8793 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET,
8794 .validate = GENL_DONT_VALIDATE_STRICT |
8795 GENL_DONT_VALIDATE_DUMP_STRICT,
8796 .dumpit = devlink_nl_cmd_health_reporter_dump_get_dumpit,
8797 .flags = GENL_ADMIN_PERM,
8798 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
8799 DEVLINK_NL_FLAG_NO_LOCK,
8800 },
8801 {
8802 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_CLEAR,
8803 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8804 .doit = devlink_nl_cmd_health_reporter_dump_clear_doit,
8805 .flags = GENL_ADMIN_PERM,
8806 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
8807 DEVLINK_NL_FLAG_NO_LOCK,
8808 },
8809 {
8810 .cmd = DEVLINK_CMD_HEALTH_REPORTER_TEST,
8811 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8812 .doit = devlink_nl_cmd_health_reporter_test_doit,
8813 .flags = GENL_ADMIN_PERM,
8814 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
8815 DEVLINK_NL_FLAG_NO_LOCK,
8816 },
8817 {
8818 .cmd = DEVLINK_CMD_FLASH_UPDATE,
8819 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8820 .doit = devlink_nl_cmd_flash_update,
8821 .flags = GENL_ADMIN_PERM,
8822 },
8823 {
8824 .cmd = DEVLINK_CMD_TRAP_GET,
8825 .doit = devlink_nl_cmd_trap_get_doit,
8826 .dumpit = devlink_nl_cmd_trap_get_dumpit,
8827
8828 },
8829 {
8830 .cmd = DEVLINK_CMD_TRAP_SET,
8831 .doit = devlink_nl_cmd_trap_set_doit,
8832 .flags = GENL_ADMIN_PERM,
8833 },
8834 {
8835 .cmd = DEVLINK_CMD_TRAP_GROUP_GET,
8836 .doit = devlink_nl_cmd_trap_group_get_doit,
8837 .dumpit = devlink_nl_cmd_trap_group_get_dumpit,
8838
8839 },
8840 {
8841 .cmd = DEVLINK_CMD_TRAP_GROUP_SET,
8842 .doit = devlink_nl_cmd_trap_group_set_doit,
8843 .flags = GENL_ADMIN_PERM,
8844 },
8845 {
8846 .cmd = DEVLINK_CMD_TRAP_POLICER_GET,
8847 .doit = devlink_nl_cmd_trap_policer_get_doit,
8848 .dumpit = devlink_nl_cmd_trap_policer_get_dumpit,
8849
8850 },
8851 {
8852 .cmd = DEVLINK_CMD_TRAP_POLICER_SET,
8853 .doit = devlink_nl_cmd_trap_policer_set_doit,
8854 .flags = GENL_ADMIN_PERM,
8855 },
8856};
8857
8858static struct genl_family devlink_nl_family __ro_after_init = {
8859 .name = DEVLINK_GENL_NAME,
8860 .version = DEVLINK_GENL_VERSION,
8861 .maxattr = DEVLINK_ATTR_MAX,
8862 .policy = devlink_nl_policy,
8863 .netnsok = true,
8864 .pre_doit = devlink_nl_pre_doit,
8865 .post_doit = devlink_nl_post_doit,
8866 .module = THIS_MODULE,
8867 .small_ops = devlink_nl_ops,
8868 .n_small_ops = ARRAY_SIZE(devlink_nl_ops),
8869 .mcgrps = devlink_nl_mcgrps,
8870 .n_mcgrps = ARRAY_SIZE(devlink_nl_mcgrps),
8871};
8872
8873static bool devlink_reload_actions_valid(const struct devlink_ops *ops)
8874{
8875 const struct devlink_reload_combination *comb;
8876 int i;
8877
8878 if (!devlink_reload_supported(ops)) {
8879 if (WARN_ON(ops->reload_actions))
8880 return false;
8881 return true;
8882 }
8883
8884 if (WARN_ON(!ops->reload_actions ||
8885 ops->reload_actions & BIT(DEVLINK_RELOAD_ACTION_UNSPEC) ||
8886 ops->reload_actions >= BIT(__DEVLINK_RELOAD_ACTION_MAX)))
8887 return false;
8888
8889 if (WARN_ON(ops->reload_limits & BIT(DEVLINK_RELOAD_LIMIT_UNSPEC) ||
8890 ops->reload_limits >= BIT(__DEVLINK_RELOAD_LIMIT_MAX)))
8891 return false;
8892
8893 for (i = 0; i < ARRAY_SIZE(devlink_reload_invalid_combinations); i++) {
8894 comb = &devlink_reload_invalid_combinations[i];
8895 if (ops->reload_actions == BIT(comb->action) &&
8896 ops->reload_limits == BIT(comb->limit))
8897 return false;
8898 }
8899 return true;
8900}
8901
8902
8903
8904
8905
8906
8907
8908
8909
8910
8911
8912
8913
8914struct devlink *devlink_alloc_ns(const struct devlink_ops *ops,
8915 size_t priv_size, struct net *net,
8916 struct device *dev)
8917{
8918 struct devlink *devlink;
8919 static u32 last_id;
8920 int ret;
8921
8922 WARN_ON(!ops || !dev);
8923 if (!devlink_reload_actions_valid(ops))
8924 return NULL;
8925
8926 devlink = kzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL);
8927 if (!devlink)
8928 return NULL;
8929
8930 ret = xa_alloc_cyclic(&devlinks, &devlink->index, devlink, xa_limit_31b,
8931 &last_id, GFP_KERNEL);
8932 if (ret < 0) {
8933 kfree(devlink);
8934 return NULL;
8935 }
8936
8937 devlink->dev = dev;
8938 devlink->ops = ops;
8939 xa_init_flags(&devlink->snapshot_ids, XA_FLAGS_ALLOC);
8940 write_pnet(&devlink->_net, net);
8941 INIT_LIST_HEAD(&devlink->port_list);
8942 INIT_LIST_HEAD(&devlink->rate_list);
8943 INIT_LIST_HEAD(&devlink->sb_list);
8944 INIT_LIST_HEAD_RCU(&devlink->dpipe_table_list);
8945 INIT_LIST_HEAD(&devlink->resource_list);
8946 INIT_LIST_HEAD(&devlink->param_list);
8947 INIT_LIST_HEAD(&devlink->region_list);
8948 INIT_LIST_HEAD(&devlink->reporter_list);
8949 INIT_LIST_HEAD(&devlink->trap_list);
8950 INIT_LIST_HEAD(&devlink->trap_group_list);
8951 INIT_LIST_HEAD(&devlink->trap_policer_list);
8952 mutex_init(&devlink->lock);
8953 mutex_init(&devlink->reporters_lock);
8954 refcount_set(&devlink->refcount, 1);
8955 init_completion(&devlink->comp);
8956
8957 return devlink;
8958}
8959EXPORT_SYMBOL_GPL(devlink_alloc_ns);
8960
8961
8962
8963
8964
8965
8966int devlink_register(struct devlink *devlink)
8967{
8968 mutex_lock(&devlink_mutex);
8969 xa_set_mark(&devlinks, devlink->index, DEVLINK_REGISTERED);
8970 devlink_notify(devlink, DEVLINK_CMD_NEW);
8971 mutex_unlock(&devlink_mutex);
8972 return 0;
8973}
8974EXPORT_SYMBOL_GPL(devlink_register);
8975
8976
8977
8978
8979
8980
8981void devlink_unregister(struct devlink *devlink)
8982{
8983 devlink_put(devlink);
8984 wait_for_completion(&devlink->comp);
8985
8986 mutex_lock(&devlink_mutex);
8987 WARN_ON(devlink_reload_supported(devlink->ops) &&
8988 devlink->reload_enabled);
8989 devlink_notify(devlink, DEVLINK_CMD_DEL);
8990 xa_clear_mark(&devlinks, devlink->index, DEVLINK_REGISTERED);
8991 mutex_unlock(&devlink_mutex);
8992}
8993EXPORT_SYMBOL_GPL(devlink_unregister);
8994
8995
8996
8997
8998
8999
9000
9001
9002
9003void devlink_reload_enable(struct devlink *devlink)
9004{
9005 mutex_lock(&devlink_mutex);
9006 devlink->reload_enabled = true;
9007 mutex_unlock(&devlink_mutex);
9008}
9009EXPORT_SYMBOL_GPL(devlink_reload_enable);
9010
9011
9012
9013
9014
9015
9016
9017
9018
9019void devlink_reload_disable(struct devlink *devlink)
9020{
9021 mutex_lock(&devlink_mutex);
9022
9023
9024
9025 devlink->reload_enabled = false;
9026 mutex_unlock(&devlink_mutex);
9027}
9028EXPORT_SYMBOL_GPL(devlink_reload_disable);
9029
9030
9031
9032
9033
9034
9035void devlink_free(struct devlink *devlink)
9036{
9037 mutex_destroy(&devlink->reporters_lock);
9038 mutex_destroy(&devlink->lock);
9039 WARN_ON(!list_empty(&devlink->trap_policer_list));
9040 WARN_ON(!list_empty(&devlink->trap_group_list));
9041 WARN_ON(!list_empty(&devlink->trap_list));
9042 WARN_ON(!list_empty(&devlink->reporter_list));
9043 WARN_ON(!list_empty(&devlink->region_list));
9044 WARN_ON(!list_empty(&devlink->param_list));
9045 WARN_ON(!list_empty(&devlink->resource_list));
9046 WARN_ON(!list_empty(&devlink->dpipe_table_list));
9047 WARN_ON(!list_empty(&devlink->sb_list));
9048 WARN_ON(!list_empty(&devlink->rate_list));
9049 WARN_ON(!list_empty(&devlink->port_list));
9050
9051 xa_destroy(&devlink->snapshot_ids);
9052 xa_erase(&devlinks, devlink->index);
9053
9054 kfree(devlink);
9055}
9056EXPORT_SYMBOL_GPL(devlink_free);
9057
9058static void devlink_port_type_warn(struct work_struct *work)
9059{
9060 WARN(true, "Type was not set for devlink port.");
9061}
9062
9063static bool devlink_port_type_should_warn(struct devlink_port *devlink_port)
9064{
9065
9066 return devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_CPU &&
9067 devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_DSA &&
9068 devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_UNUSED;
9069}
9070
9071#define DEVLINK_PORT_TYPE_WARN_TIMEOUT (HZ * 3600)
9072
9073static void devlink_port_type_warn_schedule(struct devlink_port *devlink_port)
9074{
9075 if (!devlink_port_type_should_warn(devlink_port))
9076 return;
9077
9078
9079
9080 schedule_delayed_work(&devlink_port->type_warn_dw,
9081 DEVLINK_PORT_TYPE_WARN_TIMEOUT);
9082}
9083
9084static void devlink_port_type_warn_cancel(struct devlink_port *devlink_port)
9085{
9086 if (!devlink_port_type_should_warn(devlink_port))
9087 return;
9088 cancel_delayed_work_sync(&devlink_port->type_warn_dw);
9089}
9090
9091
9092
9093
9094
9095
9096
9097
9098
9099
9100
9101
9102
9103
9104int devlink_port_register(struct devlink *devlink,
9105 struct devlink_port *devlink_port,
9106 unsigned int port_index)
9107{
9108 mutex_lock(&devlink->lock);
9109 if (devlink_port_index_exists(devlink, port_index)) {
9110 mutex_unlock(&devlink->lock);
9111 return -EEXIST;
9112 }
9113
9114 WARN_ON(devlink_port->devlink);
9115 devlink_port->devlink = devlink;
9116 devlink_port->index = port_index;
9117 spin_lock_init(&devlink_port->type_lock);
9118 INIT_LIST_HEAD(&devlink_port->reporter_list);
9119 mutex_init(&devlink_port->reporters_lock);
9120 list_add_tail(&devlink_port->list, &devlink->port_list);
9121 INIT_LIST_HEAD(&devlink_port->param_list);
9122 INIT_LIST_HEAD(&devlink_port->region_list);
9123 mutex_unlock(&devlink->lock);
9124 INIT_DELAYED_WORK(&devlink_port->type_warn_dw, &devlink_port_type_warn);
9125 devlink_port_type_warn_schedule(devlink_port);
9126 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
9127 return 0;
9128}
9129EXPORT_SYMBOL_GPL(devlink_port_register);
9130
9131
9132
9133
9134
9135
9136void devlink_port_unregister(struct devlink_port *devlink_port)
9137{
9138 struct devlink *devlink = devlink_port->devlink;
9139
9140 devlink_port_type_warn_cancel(devlink_port);
9141 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
9142 mutex_lock(&devlink->lock);
9143 list_del(&devlink_port->list);
9144 mutex_unlock(&devlink->lock);
9145 WARN_ON(!list_empty(&devlink_port->reporter_list));
9146 WARN_ON(!list_empty(&devlink_port->region_list));
9147 mutex_destroy(&devlink_port->reporters_lock);
9148}
9149EXPORT_SYMBOL_GPL(devlink_port_unregister);
9150
9151static void __devlink_port_type_set(struct devlink_port *devlink_port,
9152 enum devlink_port_type type,
9153 void *type_dev)
9154{
9155 if (WARN_ON(!devlink_port->devlink))
9156 return;
9157 devlink_port_type_warn_cancel(devlink_port);
9158 spin_lock_bh(&devlink_port->type_lock);
9159 devlink_port->type = type;
9160 devlink_port->type_dev = type_dev;
9161 spin_unlock_bh(&devlink_port->type_lock);
9162 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
9163}
9164
9165static void devlink_port_type_netdev_checks(struct devlink_port *devlink_port,
9166 struct net_device *netdev)
9167{
9168 const struct net_device_ops *ops = netdev->netdev_ops;
9169
9170
9171
9172
9173
9174 if (ops->ndo_get_phys_port_name) {
9175
9176
9177
9178
9179
9180
9181 char name[IFNAMSIZ];
9182 int err;
9183
9184 err = ops->ndo_get_phys_port_name(netdev, name, sizeof(name));
9185 WARN_ON(err != -EOPNOTSUPP);
9186 }
9187 if (ops->ndo_get_port_parent_id) {
9188
9189
9190
9191
9192
9193
9194 struct netdev_phys_item_id ppid;
9195 int err;
9196
9197 err = ops->ndo_get_port_parent_id(netdev, &ppid);
9198 WARN_ON(err != -EOPNOTSUPP);
9199 }
9200}
9201
9202
9203
9204
9205
9206
9207
9208void devlink_port_type_eth_set(struct devlink_port *devlink_port,
9209 struct net_device *netdev)
9210{
9211 if (netdev)
9212 devlink_port_type_netdev_checks(devlink_port, netdev);
9213 else
9214 dev_warn(devlink_port->devlink->dev,
9215 "devlink port type for port %d set to Ethernet without a software interface reference, device type not supported by the kernel?\n",
9216 devlink_port->index);
9217
9218 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH, netdev);
9219}
9220EXPORT_SYMBOL_GPL(devlink_port_type_eth_set);
9221
9222
9223
9224
9225
9226
9227
9228void devlink_port_type_ib_set(struct devlink_port *devlink_port,
9229 struct ib_device *ibdev)
9230{
9231 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_IB, ibdev);
9232}
9233EXPORT_SYMBOL_GPL(devlink_port_type_ib_set);
9234
9235
9236
9237
9238
9239
9240void devlink_port_type_clear(struct devlink_port *devlink_port)
9241{
9242 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET, NULL);
9243 devlink_port_type_warn_schedule(devlink_port);
9244}
9245EXPORT_SYMBOL_GPL(devlink_port_type_clear);
9246
9247static int __devlink_port_attrs_set(struct devlink_port *devlink_port,
9248 enum devlink_port_flavour flavour)
9249{
9250 struct devlink_port_attrs *attrs = &devlink_port->attrs;
9251
9252 devlink_port->attrs_set = true;
9253 attrs->flavour = flavour;
9254 if (attrs->switch_id.id_len) {
9255 devlink_port->switch_port = true;
9256 if (WARN_ON(attrs->switch_id.id_len > MAX_PHYS_ITEM_ID_LEN))
9257 attrs->switch_id.id_len = MAX_PHYS_ITEM_ID_LEN;
9258 } else {
9259 devlink_port->switch_port = false;
9260 }
9261 return 0;
9262}
9263
9264
9265
9266
9267
9268
9269
9270void devlink_port_attrs_set(struct devlink_port *devlink_port,
9271 struct devlink_port_attrs *attrs)
9272{
9273 int ret;
9274
9275 if (WARN_ON(devlink_port->devlink))
9276 return;
9277 devlink_port->attrs = *attrs;
9278 ret = __devlink_port_attrs_set(devlink_port, attrs->flavour);
9279 if (ret)
9280 return;
9281 WARN_ON(attrs->splittable && attrs->split);
9282}
9283EXPORT_SYMBOL_GPL(devlink_port_attrs_set);
9284
9285
9286
9287
9288
9289
9290
9291
9292
9293void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port, u32 controller,
9294 u16 pf, bool external)
9295{
9296 struct devlink_port_attrs *attrs = &devlink_port->attrs;
9297 int ret;
9298
9299 if (WARN_ON(devlink_port->devlink))
9300 return;
9301 ret = __devlink_port_attrs_set(devlink_port,
9302 DEVLINK_PORT_FLAVOUR_PCI_PF);
9303 if (ret)
9304 return;
9305 attrs->pci_pf.controller = controller;
9306 attrs->pci_pf.pf = pf;
9307 attrs->pci_pf.external = external;
9308}
9309EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_pf_set);
9310
9311
9312
9313
9314
9315
9316
9317
9318
9319
9320void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port, u32 controller,
9321 u16 pf, u16 vf, bool external)
9322{
9323 struct devlink_port_attrs *attrs = &devlink_port->attrs;
9324 int ret;
9325
9326 if (WARN_ON(devlink_port->devlink))
9327 return;
9328 ret = __devlink_port_attrs_set(devlink_port,
9329 DEVLINK_PORT_FLAVOUR_PCI_VF);
9330 if (ret)
9331 return;
9332 attrs->pci_vf.controller = controller;
9333 attrs->pci_vf.pf = pf;
9334 attrs->pci_vf.vf = vf;
9335 attrs->pci_vf.external = external;
9336}
9337EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_vf_set);
9338
9339
9340
9341
9342
9343
9344
9345
9346
9347
9348void devlink_port_attrs_pci_sf_set(struct devlink_port *devlink_port, u32 controller,
9349 u16 pf, u32 sf, bool external)
9350{
9351 struct devlink_port_attrs *attrs = &devlink_port->attrs;
9352 int ret;
9353
9354 if (WARN_ON(devlink_port->devlink))
9355 return;
9356 ret = __devlink_port_attrs_set(devlink_port,
9357 DEVLINK_PORT_FLAVOUR_PCI_SF);
9358 if (ret)
9359 return;
9360 attrs->pci_sf.controller = controller;
9361 attrs->pci_sf.pf = pf;
9362 attrs->pci_sf.sf = sf;
9363 attrs->pci_sf.external = external;
9364}
9365EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_sf_set);
9366
9367
9368
9369
9370
9371
9372
9373
9374
9375
9376
9377
9378
9379
9380int
9381devlink_rate_leaf_create(struct devlink_port *devlink_port, void *priv)
9382{
9383 struct devlink *devlink = devlink_port->devlink;
9384 struct devlink_rate *devlink_rate;
9385
9386 devlink_rate = kzalloc(sizeof(*devlink_rate), GFP_KERNEL);
9387 if (!devlink_rate)
9388 return -ENOMEM;
9389
9390 mutex_lock(&devlink->lock);
9391 WARN_ON(devlink_port->devlink_rate);
9392 devlink_rate->type = DEVLINK_RATE_TYPE_LEAF;
9393 devlink_rate->devlink = devlink;
9394 devlink_rate->devlink_port = devlink_port;
9395 devlink_rate->priv = priv;
9396 list_add_tail(&devlink_rate->list, &devlink->rate_list);
9397 devlink_port->devlink_rate = devlink_rate;
9398 devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_NEW);
9399 mutex_unlock(&devlink->lock);
9400
9401 return 0;
9402}
9403EXPORT_SYMBOL_GPL(devlink_rate_leaf_create);
9404
9405
9406
9407
9408
9409
9410
9411
9412void devlink_rate_leaf_destroy(struct devlink_port *devlink_port)
9413{
9414 struct devlink_rate *devlink_rate = devlink_port->devlink_rate;
9415 struct devlink *devlink = devlink_port->devlink;
9416
9417 if (!devlink_rate)
9418 return;
9419
9420 mutex_lock(&devlink->lock);
9421 devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_DEL);
9422 if (devlink_rate->parent)
9423 refcount_dec(&devlink_rate->parent->refcnt);
9424 list_del(&devlink_rate->list);
9425 devlink_port->devlink_rate = NULL;
9426 mutex_unlock(&devlink->lock);
9427 kfree(devlink_rate);
9428}
9429EXPORT_SYMBOL_GPL(devlink_rate_leaf_destroy);
9430
9431
9432
9433
9434
9435
9436
9437
9438
9439
9440
9441void devlink_rate_nodes_destroy(struct devlink *devlink)
9442{
9443 static struct devlink_rate *devlink_rate, *tmp;
9444 const struct devlink_ops *ops = devlink->ops;
9445
9446 mutex_lock(&devlink->lock);
9447 list_for_each_entry(devlink_rate, &devlink->rate_list, list) {
9448 if (!devlink_rate->parent)
9449 continue;
9450
9451 refcount_dec(&devlink_rate->parent->refcnt);
9452 if (devlink_rate_is_leaf(devlink_rate))
9453 ops->rate_leaf_parent_set(devlink_rate, NULL, devlink_rate->priv,
9454 NULL, NULL);
9455 else if (devlink_rate_is_node(devlink_rate))
9456 ops->rate_node_parent_set(devlink_rate, NULL, devlink_rate->priv,
9457 NULL, NULL);
9458 }
9459 list_for_each_entry_safe(devlink_rate, tmp, &devlink->rate_list, list) {
9460 if (devlink_rate_is_node(devlink_rate)) {
9461 ops->rate_node_del(devlink_rate, devlink_rate->priv, NULL);
9462 list_del(&devlink_rate->list);
9463 kfree(devlink_rate->name);
9464 kfree(devlink_rate);
9465 }
9466 }
9467 mutex_unlock(&devlink->lock);
9468}
9469EXPORT_SYMBOL_GPL(devlink_rate_nodes_destroy);
9470
9471static int __devlink_port_phys_port_name_get(struct devlink_port *devlink_port,
9472 char *name, size_t len)
9473{
9474 struct devlink_port_attrs *attrs = &devlink_port->attrs;
9475 int n = 0;
9476
9477 if (!devlink_port->attrs_set)
9478 return -EOPNOTSUPP;
9479
9480 switch (attrs->flavour) {
9481 case DEVLINK_PORT_FLAVOUR_PHYSICAL:
9482 n = snprintf(name, len, "p%u", attrs->phys.port_number);
9483 if (n < len && attrs->split)
9484 n += snprintf(name + n, len - n, "s%u",
9485 attrs->phys.split_subport_number);
9486 break;
9487 case DEVLINK_PORT_FLAVOUR_CPU:
9488 case DEVLINK_PORT_FLAVOUR_DSA:
9489 case DEVLINK_PORT_FLAVOUR_UNUSED:
9490
9491
9492
9493 WARN_ON(1);
9494 return -EINVAL;
9495 case DEVLINK_PORT_FLAVOUR_PCI_PF:
9496 if (attrs->pci_pf.external) {
9497 n = snprintf(name, len, "c%u", attrs->pci_pf.controller);
9498 if (n >= len)
9499 return -EINVAL;
9500 len -= n;
9501 name += n;
9502 }
9503 n = snprintf(name, len, "pf%u", attrs->pci_pf.pf);
9504 break;
9505 case DEVLINK_PORT_FLAVOUR_PCI_VF:
9506 if (attrs->pci_vf.external) {
9507 n = snprintf(name, len, "c%u", attrs->pci_vf.controller);
9508 if (n >= len)
9509 return -EINVAL;
9510 len -= n;
9511 name += n;
9512 }
9513 n = snprintf(name, len, "pf%uvf%u",
9514 attrs->pci_vf.pf, attrs->pci_vf.vf);
9515 break;
9516 case DEVLINK_PORT_FLAVOUR_PCI_SF:
9517 if (attrs->pci_sf.external) {
9518 n = snprintf(name, len, "c%u", attrs->pci_sf.controller);
9519 if (n >= len)
9520 return -EINVAL;
9521 len -= n;
9522 name += n;
9523 }
9524 n = snprintf(name, len, "pf%usf%u", attrs->pci_sf.pf,
9525 attrs->pci_sf.sf);
9526 break;
9527 case DEVLINK_PORT_FLAVOUR_VIRTUAL:
9528 return -EOPNOTSUPP;
9529 }
9530
9531 if (n >= len)
9532 return -EINVAL;
9533
9534 return 0;
9535}
9536
9537int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
9538 u32 size, u16 ingress_pools_count,
9539 u16 egress_pools_count, u16 ingress_tc_count,
9540 u16 egress_tc_count)
9541{
9542 struct devlink_sb *devlink_sb;
9543 int err = 0;
9544
9545 mutex_lock(&devlink->lock);
9546 if (devlink_sb_index_exists(devlink, sb_index)) {
9547 err = -EEXIST;
9548 goto unlock;
9549 }
9550
9551 devlink_sb = kzalloc(sizeof(*devlink_sb), GFP_KERNEL);
9552 if (!devlink_sb) {
9553 err = -ENOMEM;
9554 goto unlock;
9555 }
9556 devlink_sb->index = sb_index;
9557 devlink_sb->size = size;
9558 devlink_sb->ingress_pools_count = ingress_pools_count;
9559 devlink_sb->egress_pools_count = egress_pools_count;
9560 devlink_sb->ingress_tc_count = ingress_tc_count;
9561 devlink_sb->egress_tc_count = egress_tc_count;
9562 list_add_tail(&devlink_sb->list, &devlink->sb_list);
9563unlock:
9564 mutex_unlock(&devlink->lock);
9565 return err;
9566}
9567EXPORT_SYMBOL_GPL(devlink_sb_register);
9568
9569void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index)
9570{
9571 struct devlink_sb *devlink_sb;
9572
9573 mutex_lock(&devlink->lock);
9574 devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
9575 WARN_ON(!devlink_sb);
9576 list_del(&devlink_sb->list);
9577 mutex_unlock(&devlink->lock);
9578 kfree(devlink_sb);
9579}
9580EXPORT_SYMBOL_GPL(devlink_sb_unregister);
9581
9582
9583
9584
9585
9586
9587
9588
9589
9590int devlink_dpipe_headers_register(struct devlink *devlink,
9591 struct devlink_dpipe_headers *dpipe_headers)
9592{
9593 mutex_lock(&devlink->lock);
9594 devlink->dpipe_headers = dpipe_headers;
9595 mutex_unlock(&devlink->lock);
9596 return 0;
9597}
9598EXPORT_SYMBOL_GPL(devlink_dpipe_headers_register);
9599
9600
9601
9602
9603
9604
9605
9606
9607void devlink_dpipe_headers_unregister(struct devlink *devlink)
9608{
9609 mutex_lock(&devlink->lock);
9610 devlink->dpipe_headers = NULL;
9611 mutex_unlock(&devlink->lock);
9612}
9613EXPORT_SYMBOL_GPL(devlink_dpipe_headers_unregister);
9614
9615
9616
9617
9618
9619
9620
9621
9622
9623
9624
9625
9626
9627
9628
9629bool devlink_dpipe_table_counter_enabled(struct devlink *devlink,
9630 const char *table_name)
9631{
9632 struct devlink_dpipe_table *table;
9633 bool enabled;
9634
9635 rcu_read_lock();
9636 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
9637 table_name, devlink);
9638 enabled = false;
9639 if (table)
9640 enabled = table->counters_enabled;
9641 rcu_read_unlock();
9642 return enabled;
9643}
9644EXPORT_SYMBOL_GPL(devlink_dpipe_table_counter_enabled);
9645
9646
9647
9648
9649
9650
9651
9652
9653
9654
9655int devlink_dpipe_table_register(struct devlink *devlink,
9656 const char *table_name,
9657 struct devlink_dpipe_table_ops *table_ops,
9658 void *priv, bool counter_control_extern)
9659{
9660 struct devlink_dpipe_table *table;
9661 int err = 0;
9662
9663 if (WARN_ON(!table_ops->size_get))
9664 return -EINVAL;
9665
9666 mutex_lock(&devlink->lock);
9667
9668 if (devlink_dpipe_table_find(&devlink->dpipe_table_list, table_name,
9669 devlink)) {
9670 err = -EEXIST;
9671 goto unlock;
9672 }
9673
9674 table = kzalloc(sizeof(*table), GFP_KERNEL);
9675 if (!table) {
9676 err = -ENOMEM;
9677 goto unlock;
9678 }
9679
9680 table->name = table_name;
9681 table->table_ops = table_ops;
9682 table->priv = priv;
9683 table->counter_control_extern = counter_control_extern;
9684
9685 list_add_tail_rcu(&table->list, &devlink->dpipe_table_list);
9686unlock:
9687 mutex_unlock(&devlink->lock);
9688 return err;
9689}
9690EXPORT_SYMBOL_GPL(devlink_dpipe_table_register);
9691
9692
9693
9694
9695
9696
9697
9698void devlink_dpipe_table_unregister(struct devlink *devlink,
9699 const char *table_name)
9700{
9701 struct devlink_dpipe_table *table;
9702
9703 mutex_lock(&devlink->lock);
9704 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
9705 table_name, devlink);
9706 if (!table)
9707 goto unlock;
9708 list_del_rcu(&table->list);
9709 mutex_unlock(&devlink->lock);
9710 kfree_rcu(table, rcu);
9711 return;
9712unlock:
9713 mutex_unlock(&devlink->lock);
9714}
9715EXPORT_SYMBOL_GPL(devlink_dpipe_table_unregister);
9716
9717
9718
9719
9720
9721
9722
9723
9724
9725
9726
9727
9728
9729
9730
9731int devlink_resource_register(struct devlink *devlink,
9732 const char *resource_name,
9733 u64 resource_size,
9734 u64 resource_id,
9735 u64 parent_resource_id,
9736 const struct devlink_resource_size_params *size_params)
9737{
9738 struct devlink_resource *resource;
9739 struct list_head *resource_list;
9740 bool top_hierarchy;
9741 int err = 0;
9742
9743 top_hierarchy = parent_resource_id == DEVLINK_RESOURCE_ID_PARENT_TOP;
9744
9745 mutex_lock(&devlink->lock);
9746 resource = devlink_resource_find(devlink, NULL, resource_id);
9747 if (resource) {
9748 err = -EINVAL;
9749 goto out;
9750 }
9751
9752 resource = kzalloc(sizeof(*resource), GFP_KERNEL);
9753 if (!resource) {
9754 err = -ENOMEM;
9755 goto out;
9756 }
9757
9758 if (top_hierarchy) {
9759 resource_list = &devlink->resource_list;
9760 } else {
9761 struct devlink_resource *parent_resource;
9762
9763 parent_resource = devlink_resource_find(devlink, NULL,
9764 parent_resource_id);
9765 if (parent_resource) {
9766 resource_list = &parent_resource->resource_list;
9767 resource->parent = parent_resource;
9768 } else {
9769 kfree(resource);
9770 err = -EINVAL;
9771 goto out;
9772 }
9773 }
9774
9775 resource->name = resource_name;
9776 resource->size = resource_size;
9777 resource->size_new = resource_size;
9778 resource->id = resource_id;
9779 resource->size_valid = true;
9780 memcpy(&resource->size_params, size_params,
9781 sizeof(resource->size_params));
9782 INIT_LIST_HEAD(&resource->resource_list);
9783 list_add_tail(&resource->list, resource_list);
9784out:
9785 mutex_unlock(&devlink->lock);
9786 return err;
9787}
9788EXPORT_SYMBOL_GPL(devlink_resource_register);
9789
9790
9791
9792
9793
9794
9795
9796void devlink_resources_unregister(struct devlink *devlink,
9797 struct devlink_resource *resource)
9798{
9799 struct devlink_resource *tmp, *child_resource;
9800 struct list_head *resource_list;
9801
9802 if (resource)
9803 resource_list = &resource->resource_list;
9804 else
9805 resource_list = &devlink->resource_list;
9806
9807 if (!resource)
9808 mutex_lock(&devlink->lock);
9809
9810 list_for_each_entry_safe(child_resource, tmp, resource_list, list) {
9811 devlink_resources_unregister(devlink, child_resource);
9812 list_del(&child_resource->list);
9813 kfree(child_resource);
9814 }
9815
9816 if (!resource)
9817 mutex_unlock(&devlink->lock);
9818}
9819EXPORT_SYMBOL_GPL(devlink_resources_unregister);
9820
9821
9822
9823
9824
9825
9826
9827
9828int devlink_resource_size_get(struct devlink *devlink,
9829 u64 resource_id,
9830 u64 *p_resource_size)
9831{
9832 struct devlink_resource *resource;
9833 int err = 0;
9834
9835 mutex_lock(&devlink->lock);
9836 resource = devlink_resource_find(devlink, NULL, resource_id);
9837 if (!resource) {
9838 err = -EINVAL;
9839 goto out;
9840 }
9841 *p_resource_size = resource->size_new;
9842 resource->size = resource->size_new;
9843out:
9844 mutex_unlock(&devlink->lock);
9845 return err;
9846}
9847EXPORT_SYMBOL_GPL(devlink_resource_size_get);
9848
9849
9850
9851
9852
9853
9854
9855
9856
9857int devlink_dpipe_table_resource_set(struct devlink *devlink,
9858 const char *table_name, u64 resource_id,
9859 u64 resource_units)
9860{
9861 struct devlink_dpipe_table *table;
9862 int err = 0;
9863
9864 mutex_lock(&devlink->lock);
9865 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
9866 table_name, devlink);
9867 if (!table) {
9868 err = -EINVAL;
9869 goto out;
9870 }
9871 table->resource_id = resource_id;
9872 table->resource_units = resource_units;
9873 table->resource_valid = true;
9874out:
9875 mutex_unlock(&devlink->lock);
9876 return err;
9877}
9878EXPORT_SYMBOL_GPL(devlink_dpipe_table_resource_set);
9879
9880
9881
9882
9883
9884
9885
9886
9887
9888void devlink_resource_occ_get_register(struct devlink *devlink,
9889 u64 resource_id,
9890 devlink_resource_occ_get_t *occ_get,
9891 void *occ_get_priv)
9892{
9893 struct devlink_resource *resource;
9894
9895 mutex_lock(&devlink->lock);
9896 resource = devlink_resource_find(devlink, NULL, resource_id);
9897 if (WARN_ON(!resource))
9898 goto out;
9899 WARN_ON(resource->occ_get);
9900
9901 resource->occ_get = occ_get;
9902 resource->occ_get_priv = occ_get_priv;
9903out:
9904 mutex_unlock(&devlink->lock);
9905}
9906EXPORT_SYMBOL_GPL(devlink_resource_occ_get_register);
9907
9908
9909
9910
9911
9912
9913
9914void devlink_resource_occ_get_unregister(struct devlink *devlink,
9915 u64 resource_id)
9916{
9917 struct devlink_resource *resource;
9918
9919 mutex_lock(&devlink->lock);
9920 resource = devlink_resource_find(devlink, NULL, resource_id);
9921 if (WARN_ON(!resource))
9922 goto out;
9923 WARN_ON(!resource->occ_get);
9924
9925 resource->occ_get = NULL;
9926 resource->occ_get_priv = NULL;
9927out:
9928 mutex_unlock(&devlink->lock);
9929}
9930EXPORT_SYMBOL_GPL(devlink_resource_occ_get_unregister);
9931
9932static int devlink_param_verify(const struct devlink_param *param)
9933{
9934 if (!param || !param->name || !param->supported_cmodes)
9935 return -EINVAL;
9936 if (param->generic)
9937 return devlink_param_generic_verify(param);
9938 else
9939 return devlink_param_driver_verify(param);
9940}
9941
9942static int __devlink_param_register_one(struct devlink *devlink,
9943 unsigned int port_index,
9944 struct list_head *param_list,
9945 const struct devlink_param *param,
9946 enum devlink_command reg_cmd)
9947{
9948 int err;
9949
9950 err = devlink_param_verify(param);
9951 if (err)
9952 return err;
9953
9954 return devlink_param_register_one(devlink, port_index,
9955 param_list, param, reg_cmd);
9956}
9957
9958static int __devlink_params_register(struct devlink *devlink,
9959 unsigned int port_index,
9960 struct list_head *param_list,
9961 const struct devlink_param *params,
9962 size_t params_count,
9963 enum devlink_command reg_cmd,
9964 enum devlink_command unreg_cmd)
9965{
9966 const struct devlink_param *param = params;
9967 int i;
9968 int err;
9969
9970 mutex_lock(&devlink->lock);
9971 for (i = 0; i < params_count; i++, param++) {
9972 err = __devlink_param_register_one(devlink, port_index,
9973 param_list, param, reg_cmd);
9974 if (err)
9975 goto rollback;
9976 }
9977
9978 mutex_unlock(&devlink->lock);
9979 return 0;
9980
9981rollback:
9982 if (!i)
9983 goto unlock;
9984 for (param--; i > 0; i--, param--)
9985 devlink_param_unregister_one(devlink, port_index, param_list,
9986 param, unreg_cmd);
9987unlock:
9988 mutex_unlock(&devlink->lock);
9989 return err;
9990}
9991
9992static void __devlink_params_unregister(struct devlink *devlink,
9993 unsigned int port_index,
9994 struct list_head *param_list,
9995 const struct devlink_param *params,
9996 size_t params_count,
9997 enum devlink_command cmd)
9998{
9999 const struct devlink_param *param = params;
10000 int i;
10001
10002 mutex_lock(&devlink->lock);
10003 for (i = 0; i < params_count; i++, param++)
10004 devlink_param_unregister_one(devlink, 0, param_list, param,
10005 cmd);
10006 mutex_unlock(&devlink->lock);
10007}
10008
10009
10010
10011
10012
10013
10014
10015
10016
10017
10018int devlink_params_register(struct devlink *devlink,
10019 const struct devlink_param *params,
10020 size_t params_count)
10021{
10022 return __devlink_params_register(devlink, 0, &devlink->param_list,
10023 params, params_count,
10024 DEVLINK_CMD_PARAM_NEW,
10025 DEVLINK_CMD_PARAM_DEL);
10026}
10027EXPORT_SYMBOL_GPL(devlink_params_register);
10028
10029
10030
10031
10032
10033
10034
10035void devlink_params_unregister(struct devlink *devlink,
10036 const struct devlink_param *params,
10037 size_t params_count)
10038{
10039 return __devlink_params_unregister(devlink, 0, &devlink->param_list,
10040 params, params_count,
10041 DEVLINK_CMD_PARAM_DEL);
10042}
10043EXPORT_SYMBOL_GPL(devlink_params_unregister);
10044
10045
10046
10047
10048
10049
10050
10051
10052
10053
10054int devlink_param_register(struct devlink *devlink,
10055 const struct devlink_param *param)
10056{
10057 int err;
10058
10059 mutex_lock(&devlink->lock);
10060 err = __devlink_param_register_one(devlink, 0, &devlink->param_list,
10061 param, DEVLINK_CMD_PARAM_NEW);
10062 mutex_unlock(&devlink->lock);
10063 return err;
10064}
10065EXPORT_SYMBOL_GPL(devlink_param_register);
10066
10067
10068
10069
10070
10071
10072void devlink_param_unregister(struct devlink *devlink,
10073 const struct devlink_param *param)
10074{
10075 mutex_lock(&devlink->lock);
10076 devlink_param_unregister_one(devlink, 0, &devlink->param_list, param,
10077 DEVLINK_CMD_PARAM_DEL);
10078 mutex_unlock(&devlink->lock);
10079}
10080EXPORT_SYMBOL_GPL(devlink_param_unregister);
10081
10082
10083
10084
10085
10086
10087
10088
10089void devlink_params_publish(struct devlink *devlink)
10090{
10091 struct devlink_param_item *param_item;
10092
10093 list_for_each_entry(param_item, &devlink->param_list, list) {
10094 if (param_item->published)
10095 continue;
10096 param_item->published = true;
10097 devlink_param_notify(devlink, 0, param_item,
10098 DEVLINK_CMD_PARAM_NEW);
10099 }
10100}
10101EXPORT_SYMBOL_GPL(devlink_params_publish);
10102
10103
10104
10105
10106
10107
10108
10109
10110void devlink_params_unpublish(struct devlink *devlink)
10111{
10112 struct devlink_param_item *param_item;
10113
10114 list_for_each_entry(param_item, &devlink->param_list, list) {
10115 if (!param_item->published)
10116 continue;
10117 param_item->published = false;
10118 devlink_param_notify(devlink, 0, param_item,
10119 DEVLINK_CMD_PARAM_DEL);
10120 }
10121}
10122EXPORT_SYMBOL_GPL(devlink_params_unpublish);
10123
10124
10125
10126
10127
10128
10129
10130
10131
10132void devlink_param_publish(struct devlink *devlink,
10133 const struct devlink_param *param)
10134{
10135 struct devlink_param_item *param_item;
10136
10137 list_for_each_entry(param_item, &devlink->param_list, list) {
10138 if (param_item->param != param || param_item->published)
10139 continue;
10140 param_item->published = true;
10141 devlink_param_notify(devlink, 0, param_item,
10142 DEVLINK_CMD_PARAM_NEW);
10143 break;
10144 }
10145}
10146EXPORT_SYMBOL_GPL(devlink_param_publish);
10147
10148
10149
10150
10151
10152
10153
10154
10155
10156void devlink_param_unpublish(struct devlink *devlink,
10157 const struct devlink_param *param)
10158{
10159 struct devlink_param_item *param_item;
10160
10161 list_for_each_entry(param_item, &devlink->param_list, list) {
10162 if (param_item->param != param || !param_item->published)
10163 continue;
10164 param_item->published = false;
10165 devlink_param_notify(devlink, 0, param_item,
10166 DEVLINK_CMD_PARAM_DEL);
10167 break;
10168 }
10169}
10170EXPORT_SYMBOL_GPL(devlink_param_unpublish);
10171
10172
10173
10174
10175
10176
10177
10178
10179
10180
10181int devlink_port_params_register(struct devlink_port *devlink_port,
10182 const struct devlink_param *params,
10183 size_t params_count)
10184{
10185 return __devlink_params_register(devlink_port->devlink,
10186 devlink_port->index,
10187 &devlink_port->param_list, params,
10188 params_count,
10189 DEVLINK_CMD_PORT_PARAM_NEW,
10190 DEVLINK_CMD_PORT_PARAM_DEL);
10191}
10192EXPORT_SYMBOL_GPL(devlink_port_params_register);
10193
10194
10195
10196
10197
10198
10199
10200
10201
10202void devlink_port_params_unregister(struct devlink_port *devlink_port,
10203 const struct devlink_param *params,
10204 size_t params_count)
10205{
10206 return __devlink_params_unregister(devlink_port->devlink,
10207 devlink_port->index,
10208 &devlink_port->param_list,
10209 params, params_count,
10210 DEVLINK_CMD_PORT_PARAM_DEL);
10211}
10212EXPORT_SYMBOL_GPL(devlink_port_params_unregister);
10213
10214static int
10215__devlink_param_driverinit_value_get(struct list_head *param_list, u32 param_id,
10216 union devlink_param_value *init_val)
10217{
10218 struct devlink_param_item *param_item;
10219
10220 param_item = devlink_param_find_by_id(param_list, param_id);
10221 if (!param_item)
10222 return -EINVAL;
10223
10224 if (!param_item->driverinit_value_valid ||
10225 !devlink_param_cmode_is_supported(param_item->param,
10226 DEVLINK_PARAM_CMODE_DRIVERINIT))
10227 return -EOPNOTSUPP;
10228
10229 if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
10230 strcpy(init_val->vstr, param_item->driverinit_value.vstr);
10231 else
10232 *init_val = param_item->driverinit_value;
10233
10234 return 0;
10235}
10236
10237static int
10238__devlink_param_driverinit_value_set(struct devlink *devlink,
10239 unsigned int port_index,
10240 struct list_head *param_list, u32 param_id,
10241 union devlink_param_value init_val,
10242 enum devlink_command cmd)
10243{
10244 struct devlink_param_item *param_item;
10245
10246 param_item = devlink_param_find_by_id(param_list, param_id);
10247 if (!param_item)
10248 return -EINVAL;
10249
10250 if (!devlink_param_cmode_is_supported(param_item->param,
10251 DEVLINK_PARAM_CMODE_DRIVERINIT))
10252 return -EOPNOTSUPP;
10253
10254 if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
10255 strcpy(param_item->driverinit_value.vstr, init_val.vstr);
10256 else
10257 param_item->driverinit_value = init_val;
10258 param_item->driverinit_value_valid = true;
10259
10260 devlink_param_notify(devlink, port_index, param_item, cmd);
10261 return 0;
10262}
10263
10264
10265
10266
10267
10268
10269
10270
10271
10272
10273
10274
10275int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
10276 union devlink_param_value *init_val)
10277{
10278 if (!devlink_reload_supported(devlink->ops))
10279 return -EOPNOTSUPP;
10280
10281 return __devlink_param_driverinit_value_get(&devlink->param_list,
10282 param_id, init_val);
10283}
10284EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_get);
10285
10286
10287
10288
10289
10290
10291
10292
10293
10294
10295
10296
10297
10298int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
10299 union devlink_param_value init_val)
10300{
10301 return __devlink_param_driverinit_value_set(devlink, 0,
10302 &devlink->param_list,
10303 param_id, init_val,
10304 DEVLINK_CMD_PARAM_NEW);
10305}
10306EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_set);
10307
10308
10309
10310
10311
10312
10313
10314
10315
10316
10317
10318
10319int devlink_port_param_driverinit_value_get(struct devlink_port *devlink_port,
10320 u32 param_id,
10321 union devlink_param_value *init_val)
10322{
10323 struct devlink *devlink = devlink_port->devlink;
10324
10325 if (!devlink_reload_supported(devlink->ops))
10326 return -EOPNOTSUPP;
10327
10328 return __devlink_param_driverinit_value_get(&devlink_port->param_list,
10329 param_id, init_val);
10330}
10331EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_get);
10332
10333
10334
10335
10336
10337
10338
10339
10340
10341
10342
10343
10344
10345int devlink_port_param_driverinit_value_set(struct devlink_port *devlink_port,
10346 u32 param_id,
10347 union devlink_param_value init_val)
10348{
10349 return __devlink_param_driverinit_value_set(devlink_port->devlink,
10350 devlink_port->index,
10351 &devlink_port->param_list,
10352 param_id, init_val,
10353 DEVLINK_CMD_PORT_PARAM_NEW);
10354}
10355EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_set);
10356
10357
10358
10359
10360
10361
10362
10363
10364
10365
10366
10367
10368
10369void devlink_param_value_changed(struct devlink *devlink, u32 param_id)
10370{
10371 struct devlink_param_item *param_item;
10372
10373 param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
10374 WARN_ON(!param_item);
10375
10376 devlink_param_notify(devlink, 0, param_item, DEVLINK_CMD_PARAM_NEW);
10377}
10378EXPORT_SYMBOL_GPL(devlink_param_value_changed);
10379
10380
10381
10382
10383
10384
10385
10386
10387
10388
10389
10390
10391
10392
10393void devlink_port_param_value_changed(struct devlink_port *devlink_port,
10394 u32 param_id)
10395{
10396 struct devlink_param_item *param_item;
10397
10398 param_item = devlink_param_find_by_id(&devlink_port->param_list,
10399 param_id);
10400 WARN_ON(!param_item);
10401
10402 devlink_param_notify(devlink_port->devlink, devlink_port->index,
10403 param_item, DEVLINK_CMD_PORT_PARAM_NEW);
10404}
10405EXPORT_SYMBOL_GPL(devlink_port_param_value_changed);
10406
10407
10408
10409
10410
10411
10412
10413
10414void devlink_param_value_str_fill(union devlink_param_value *dst_val,
10415 const char *src)
10416{
10417 size_t len;
10418
10419 len = strlcpy(dst_val->vstr, src, __DEVLINK_PARAM_MAX_STRING_VALUE);
10420 WARN_ON(len >= __DEVLINK_PARAM_MAX_STRING_VALUE);
10421}
10422EXPORT_SYMBOL_GPL(devlink_param_value_str_fill);
10423
10424
10425
10426
10427
10428
10429
10430
10431
10432struct devlink_region *
10433devlink_region_create(struct devlink *devlink,
10434 const struct devlink_region_ops *ops,
10435 u32 region_max_snapshots, u64 region_size)
10436{
10437 struct devlink_region *region;
10438 int err = 0;
10439
10440 if (WARN_ON(!ops) || WARN_ON(!ops->destructor))
10441 return ERR_PTR(-EINVAL);
10442
10443 mutex_lock(&devlink->lock);
10444
10445 if (devlink_region_get_by_name(devlink, ops->name)) {
10446 err = -EEXIST;
10447 goto unlock;
10448 }
10449
10450 region = kzalloc(sizeof(*region), GFP_KERNEL);
10451 if (!region) {
10452 err = -ENOMEM;
10453 goto unlock;
10454 }
10455
10456 region->devlink = devlink;
10457 region->max_snapshots = region_max_snapshots;
10458 region->ops = ops;
10459 region->size = region_size;
10460 INIT_LIST_HEAD(®ion->snapshot_list);
10461 list_add_tail(®ion->list, &devlink->region_list);
10462 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
10463
10464 mutex_unlock(&devlink->lock);
10465 return region;
10466
10467unlock:
10468 mutex_unlock(&devlink->lock);
10469 return ERR_PTR(err);
10470}
10471EXPORT_SYMBOL_GPL(devlink_region_create);
10472
10473
10474
10475
10476
10477
10478
10479
10480
10481struct devlink_region *
10482devlink_port_region_create(struct devlink_port *port,
10483 const struct devlink_port_region_ops *ops,
10484 u32 region_max_snapshots, u64 region_size)
10485{
10486 struct devlink *devlink = port->devlink;
10487 struct devlink_region *region;
10488 int err = 0;
10489
10490 if (WARN_ON(!ops) || WARN_ON(!ops->destructor))
10491 return ERR_PTR(-EINVAL);
10492
10493 mutex_lock(&devlink->lock);
10494
10495 if (devlink_port_region_get_by_name(port, ops->name)) {
10496 err = -EEXIST;
10497 goto unlock;
10498 }
10499
10500 region = kzalloc(sizeof(*region), GFP_KERNEL);
10501 if (!region) {
10502 err = -ENOMEM;
10503 goto unlock;
10504 }
10505
10506 region->devlink = devlink;
10507 region->port = port;
10508 region->max_snapshots = region_max_snapshots;
10509 region->port_ops = ops;
10510 region->size = region_size;
10511 INIT_LIST_HEAD(®ion->snapshot_list);
10512 list_add_tail(®ion->list, &port->region_list);
10513 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
10514
10515 mutex_unlock(&devlink->lock);
10516 return region;
10517
10518unlock:
10519 mutex_unlock(&devlink->lock);
10520 return ERR_PTR(err);
10521}
10522EXPORT_SYMBOL_GPL(devlink_port_region_create);
10523
10524
10525
10526
10527
10528
10529void devlink_region_destroy(struct devlink_region *region)
10530{
10531 struct devlink *devlink = region->devlink;
10532 struct devlink_snapshot *snapshot, *ts;
10533
10534 mutex_lock(&devlink->lock);
10535
10536
10537 list_for_each_entry_safe(snapshot, ts, ®ion->snapshot_list, list)
10538 devlink_region_snapshot_del(region, snapshot);
10539
10540 list_del(®ion->list);
10541
10542 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL);
10543 mutex_unlock(&devlink->lock);
10544 kfree(region);
10545}
10546EXPORT_SYMBOL_GPL(devlink_region_destroy);
10547
10548
10549
10550
10551
10552
10553
10554
10555
10556
10557
10558
10559
10560
10561
10562
10563int devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id)
10564{
10565 int err;
10566
10567 mutex_lock(&devlink->lock);
10568 err = __devlink_region_snapshot_id_get(devlink, id);
10569 mutex_unlock(&devlink->lock);
10570
10571 return err;
10572}
10573EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_get);
10574
10575
10576
10577
10578
10579
10580
10581
10582
10583
10584
10585void devlink_region_snapshot_id_put(struct devlink *devlink, u32 id)
10586{
10587 mutex_lock(&devlink->lock);
10588 __devlink_snapshot_id_decrement(devlink, id);
10589 mutex_unlock(&devlink->lock);
10590}
10591EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_put);
10592
10593
10594
10595
10596
10597
10598
10599
10600
10601
10602
10603
10604
10605int devlink_region_snapshot_create(struct devlink_region *region,
10606 u8 *data, u32 snapshot_id)
10607{
10608 struct devlink *devlink = region->devlink;
10609 int err;
10610
10611 mutex_lock(&devlink->lock);
10612 err = __devlink_region_snapshot_create(region, data, snapshot_id);
10613 mutex_unlock(&devlink->lock);
10614
10615 return err;
10616}
10617EXPORT_SYMBOL_GPL(devlink_region_snapshot_create);
10618
10619#define DEVLINK_TRAP(_id, _type) \
10620 { \
10621 .type = DEVLINK_TRAP_TYPE_##_type, \
10622 .id = DEVLINK_TRAP_GENERIC_ID_##_id, \
10623 .name = DEVLINK_TRAP_GENERIC_NAME_##_id, \
10624 }
10625
10626static const struct devlink_trap devlink_trap_generic[] = {
10627 DEVLINK_TRAP(SMAC_MC, DROP),
10628 DEVLINK_TRAP(VLAN_TAG_MISMATCH, DROP),
10629 DEVLINK_TRAP(INGRESS_VLAN_FILTER, DROP),
10630 DEVLINK_TRAP(INGRESS_STP_FILTER, DROP),
10631 DEVLINK_TRAP(EMPTY_TX_LIST, DROP),
10632 DEVLINK_TRAP(PORT_LOOPBACK_FILTER, DROP),
10633 DEVLINK_TRAP(BLACKHOLE_ROUTE, DROP),
10634 DEVLINK_TRAP(TTL_ERROR, EXCEPTION),
10635 DEVLINK_TRAP(TAIL_DROP, DROP),
10636 DEVLINK_TRAP(NON_IP_PACKET, DROP),
10637 DEVLINK_TRAP(UC_DIP_MC_DMAC, DROP),
10638 DEVLINK_TRAP(DIP_LB, DROP),
10639 DEVLINK_TRAP(SIP_MC, DROP),
10640 DEVLINK_TRAP(SIP_LB, DROP),
10641 DEVLINK_TRAP(CORRUPTED_IP_HDR, DROP),
10642 DEVLINK_TRAP(IPV4_SIP_BC, DROP),
10643 DEVLINK_TRAP(IPV6_MC_DIP_RESERVED_SCOPE, DROP),
10644 DEVLINK_TRAP(IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE, DROP),
10645 DEVLINK_TRAP(MTU_ERROR, EXCEPTION),
10646 DEVLINK_TRAP(UNRESOLVED_NEIGH, EXCEPTION),
10647 DEVLINK_TRAP(RPF, EXCEPTION),
10648 DEVLINK_TRAP(REJECT_ROUTE, EXCEPTION),
10649 DEVLINK_TRAP(IPV4_LPM_UNICAST_MISS, EXCEPTION),
10650 DEVLINK_TRAP(IPV6_LPM_UNICAST_MISS, EXCEPTION),
10651 DEVLINK_TRAP(NON_ROUTABLE, DROP),
10652 DEVLINK_TRAP(DECAP_ERROR, EXCEPTION),
10653 DEVLINK_TRAP(OVERLAY_SMAC_MC, DROP),
10654 DEVLINK_TRAP(INGRESS_FLOW_ACTION_DROP, DROP),
10655 DEVLINK_TRAP(EGRESS_FLOW_ACTION_DROP, DROP),
10656 DEVLINK_TRAP(STP, CONTROL),
10657 DEVLINK_TRAP(LACP, CONTROL),
10658 DEVLINK_TRAP(LLDP, CONTROL),
10659 DEVLINK_TRAP(IGMP_QUERY, CONTROL),
10660 DEVLINK_TRAP(IGMP_V1_REPORT, CONTROL),
10661 DEVLINK_TRAP(IGMP_V2_REPORT, CONTROL),
10662 DEVLINK_TRAP(IGMP_V3_REPORT, CONTROL),
10663 DEVLINK_TRAP(IGMP_V2_LEAVE, CONTROL),
10664 DEVLINK_TRAP(MLD_QUERY, CONTROL),
10665 DEVLINK_TRAP(MLD_V1_REPORT, CONTROL),
10666 DEVLINK_TRAP(MLD_V2_REPORT, CONTROL),
10667 DEVLINK_TRAP(MLD_V1_DONE, CONTROL),
10668 DEVLINK_TRAP(IPV4_DHCP, CONTROL),
10669 DEVLINK_TRAP(IPV6_DHCP, CONTROL),
10670 DEVLINK_TRAP(ARP_REQUEST, CONTROL),
10671 DEVLINK_TRAP(ARP_RESPONSE, CONTROL),
10672 DEVLINK_TRAP(ARP_OVERLAY, CONTROL),
10673 DEVLINK_TRAP(IPV6_NEIGH_SOLICIT, CONTROL),
10674 DEVLINK_TRAP(IPV6_NEIGH_ADVERT, CONTROL),
10675 DEVLINK_TRAP(IPV4_BFD, CONTROL),
10676 DEVLINK_TRAP(IPV6_BFD, CONTROL),
10677 DEVLINK_TRAP(IPV4_OSPF, CONTROL),
10678 DEVLINK_TRAP(IPV6_OSPF, CONTROL),
10679 DEVLINK_TRAP(IPV4_BGP, CONTROL),
10680 DEVLINK_TRAP(IPV6_BGP, CONTROL),
10681 DEVLINK_TRAP(IPV4_VRRP, CONTROL),
10682 DEVLINK_TRAP(IPV6_VRRP, CONTROL),
10683 DEVLINK_TRAP(IPV4_PIM, CONTROL),
10684 DEVLINK_TRAP(IPV6_PIM, CONTROL),
10685 DEVLINK_TRAP(UC_LB, CONTROL),
10686 DEVLINK_TRAP(LOCAL_ROUTE, CONTROL),
10687 DEVLINK_TRAP(EXTERNAL_ROUTE, CONTROL),
10688 DEVLINK_TRAP(IPV6_UC_DIP_LINK_LOCAL_SCOPE, CONTROL),
10689 DEVLINK_TRAP(IPV6_DIP_ALL_NODES, CONTROL),
10690 DEVLINK_TRAP(IPV6_DIP_ALL_ROUTERS, CONTROL),
10691 DEVLINK_TRAP(IPV6_ROUTER_SOLICIT, CONTROL),
10692 DEVLINK_TRAP(IPV6_ROUTER_ADVERT, CONTROL),
10693 DEVLINK_TRAP(IPV6_REDIRECT, CONTROL),
10694 DEVLINK_TRAP(IPV4_ROUTER_ALERT, CONTROL),
10695 DEVLINK_TRAP(IPV6_ROUTER_ALERT, CONTROL),
10696 DEVLINK_TRAP(PTP_EVENT, CONTROL),
10697 DEVLINK_TRAP(PTP_GENERAL, CONTROL),
10698 DEVLINK_TRAP(FLOW_ACTION_SAMPLE, CONTROL),
10699 DEVLINK_TRAP(FLOW_ACTION_TRAP, CONTROL),
10700 DEVLINK_TRAP(EARLY_DROP, DROP),
10701 DEVLINK_TRAP(VXLAN_PARSING, DROP),
10702 DEVLINK_TRAP(LLC_SNAP_PARSING, DROP),
10703 DEVLINK_TRAP(VLAN_PARSING, DROP),
10704 DEVLINK_TRAP(PPPOE_PPP_PARSING, DROP),
10705 DEVLINK_TRAP(MPLS_PARSING, DROP),
10706 DEVLINK_TRAP(ARP_PARSING, DROP),
10707 DEVLINK_TRAP(IP_1_PARSING, DROP),
10708 DEVLINK_TRAP(IP_N_PARSING, DROP),
10709 DEVLINK_TRAP(GRE_PARSING, DROP),
10710 DEVLINK_TRAP(UDP_PARSING, DROP),
10711 DEVLINK_TRAP(TCP_PARSING, DROP),
10712 DEVLINK_TRAP(IPSEC_PARSING, DROP),
10713 DEVLINK_TRAP(SCTP_PARSING, DROP),
10714 DEVLINK_TRAP(DCCP_PARSING, DROP),
10715 DEVLINK_TRAP(GTP_PARSING, DROP),
10716 DEVLINK_TRAP(ESP_PARSING, DROP),
10717 DEVLINK_TRAP(BLACKHOLE_NEXTHOP, DROP),
10718 DEVLINK_TRAP(DMAC_FILTER, DROP),
10719};
10720
10721#define DEVLINK_TRAP_GROUP(_id) \
10722 { \
10723 .id = DEVLINK_TRAP_GROUP_GENERIC_ID_##_id, \
10724 .name = DEVLINK_TRAP_GROUP_GENERIC_NAME_##_id, \
10725 }
10726
10727static const struct devlink_trap_group devlink_trap_group_generic[] = {
10728 DEVLINK_TRAP_GROUP(L2_DROPS),
10729 DEVLINK_TRAP_GROUP(L3_DROPS),
10730 DEVLINK_TRAP_GROUP(L3_EXCEPTIONS),
10731 DEVLINK_TRAP_GROUP(BUFFER_DROPS),
10732 DEVLINK_TRAP_GROUP(TUNNEL_DROPS),
10733 DEVLINK_TRAP_GROUP(ACL_DROPS),
10734 DEVLINK_TRAP_GROUP(STP),
10735 DEVLINK_TRAP_GROUP(LACP),
10736 DEVLINK_TRAP_GROUP(LLDP),
10737 DEVLINK_TRAP_GROUP(MC_SNOOPING),
10738 DEVLINK_TRAP_GROUP(DHCP),
10739 DEVLINK_TRAP_GROUP(NEIGH_DISCOVERY),
10740 DEVLINK_TRAP_GROUP(BFD),
10741 DEVLINK_TRAP_GROUP(OSPF),
10742 DEVLINK_TRAP_GROUP(BGP),
10743 DEVLINK_TRAP_GROUP(VRRP),
10744 DEVLINK_TRAP_GROUP(PIM),
10745 DEVLINK_TRAP_GROUP(UC_LB),
10746 DEVLINK_TRAP_GROUP(LOCAL_DELIVERY),
10747 DEVLINK_TRAP_GROUP(EXTERNAL_DELIVERY),
10748 DEVLINK_TRAP_GROUP(IPV6),
10749 DEVLINK_TRAP_GROUP(PTP_EVENT),
10750 DEVLINK_TRAP_GROUP(PTP_GENERAL),
10751 DEVLINK_TRAP_GROUP(ACL_SAMPLE),
10752 DEVLINK_TRAP_GROUP(ACL_TRAP),
10753 DEVLINK_TRAP_GROUP(PARSER_ERROR_DROPS),
10754};
10755
10756static int devlink_trap_generic_verify(const struct devlink_trap *trap)
10757{
10758 if (trap->id > DEVLINK_TRAP_GENERIC_ID_MAX)
10759 return -EINVAL;
10760
10761 if (strcmp(trap->name, devlink_trap_generic[trap->id].name))
10762 return -EINVAL;
10763
10764 if (trap->type != devlink_trap_generic[trap->id].type)
10765 return -EINVAL;
10766
10767 return 0;
10768}
10769
10770static int devlink_trap_driver_verify(const struct devlink_trap *trap)
10771{
10772 int i;
10773
10774 if (trap->id <= DEVLINK_TRAP_GENERIC_ID_MAX)
10775 return -EINVAL;
10776
10777 for (i = 0; i < ARRAY_SIZE(devlink_trap_generic); i++) {
10778 if (!strcmp(trap->name, devlink_trap_generic[i].name))
10779 return -EEXIST;
10780 }
10781
10782 return 0;
10783}
10784
10785static int devlink_trap_verify(const struct devlink_trap *trap)
10786{
10787 if (!trap || !trap->name)
10788 return -EINVAL;
10789
10790 if (trap->generic)
10791 return devlink_trap_generic_verify(trap);
10792 else
10793 return devlink_trap_driver_verify(trap);
10794}
10795
10796static int
10797devlink_trap_group_generic_verify(const struct devlink_trap_group *group)
10798{
10799 if (group->id > DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
10800 return -EINVAL;
10801
10802 if (strcmp(group->name, devlink_trap_group_generic[group->id].name))
10803 return -EINVAL;
10804
10805 return 0;
10806}
10807
10808static int
10809devlink_trap_group_driver_verify(const struct devlink_trap_group *group)
10810{
10811 int i;
10812
10813 if (group->id <= DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
10814 return -EINVAL;
10815
10816 for (i = 0; i < ARRAY_SIZE(devlink_trap_group_generic); i++) {
10817 if (!strcmp(group->name, devlink_trap_group_generic[i].name))
10818 return -EEXIST;
10819 }
10820
10821 return 0;
10822}
10823
10824static int devlink_trap_group_verify(const struct devlink_trap_group *group)
10825{
10826 if (group->generic)
10827 return devlink_trap_group_generic_verify(group);
10828 else
10829 return devlink_trap_group_driver_verify(group);
10830}
10831
10832static void
10833devlink_trap_group_notify(struct devlink *devlink,
10834 const struct devlink_trap_group_item *group_item,
10835 enum devlink_command cmd)
10836{
10837 struct sk_buff *msg;
10838 int err;
10839
10840 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_GROUP_NEW &&
10841 cmd != DEVLINK_CMD_TRAP_GROUP_DEL);
10842
10843 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10844 if (!msg)
10845 return;
10846
10847 err = devlink_nl_trap_group_fill(msg, devlink, group_item, cmd, 0, 0,
10848 0);
10849 if (err) {
10850 nlmsg_free(msg);
10851 return;
10852 }
10853
10854 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
10855 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
10856}
10857
10858static int
10859devlink_trap_item_group_link(struct devlink *devlink,
10860 struct devlink_trap_item *trap_item)
10861{
10862 u16 group_id = trap_item->trap->init_group_id;
10863 struct devlink_trap_group_item *group_item;
10864
10865 group_item = devlink_trap_group_item_lookup_by_id(devlink, group_id);
10866 if (WARN_ON_ONCE(!group_item))
10867 return -EINVAL;
10868
10869 trap_item->group_item = group_item;
10870
10871 return 0;
10872}
10873
10874static void devlink_trap_notify(struct devlink *devlink,
10875 const struct devlink_trap_item *trap_item,
10876 enum devlink_command cmd)
10877{
10878 struct sk_buff *msg;
10879 int err;
10880
10881 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_NEW &&
10882 cmd != DEVLINK_CMD_TRAP_DEL);
10883
10884 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10885 if (!msg)
10886 return;
10887
10888 err = devlink_nl_trap_fill(msg, devlink, trap_item, cmd, 0, 0, 0);
10889 if (err) {
10890 nlmsg_free(msg);
10891 return;
10892 }
10893
10894 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
10895 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
10896}
10897
10898static int
10899devlink_trap_register(struct devlink *devlink,
10900 const struct devlink_trap *trap, void *priv)
10901{
10902 struct devlink_trap_item *trap_item;
10903 int err;
10904
10905 if (devlink_trap_item_lookup(devlink, trap->name))
10906 return -EEXIST;
10907
10908 trap_item = kzalloc(sizeof(*trap_item), GFP_KERNEL);
10909 if (!trap_item)
10910 return -ENOMEM;
10911
10912 trap_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
10913 if (!trap_item->stats) {
10914 err = -ENOMEM;
10915 goto err_stats_alloc;
10916 }
10917
10918 trap_item->trap = trap;
10919 trap_item->action = trap->init_action;
10920 trap_item->priv = priv;
10921
10922 err = devlink_trap_item_group_link(devlink, trap_item);
10923 if (err)
10924 goto err_group_link;
10925
10926 err = devlink->ops->trap_init(devlink, trap, trap_item);
10927 if (err)
10928 goto err_trap_init;
10929
10930 list_add_tail(&trap_item->list, &devlink->trap_list);
10931 devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_NEW);
10932
10933 return 0;
10934
10935err_trap_init:
10936err_group_link:
10937 free_percpu(trap_item->stats);
10938err_stats_alloc:
10939 kfree(trap_item);
10940 return err;
10941}
10942
10943static void devlink_trap_unregister(struct devlink *devlink,
10944 const struct devlink_trap *trap)
10945{
10946 struct devlink_trap_item *trap_item;
10947
10948 trap_item = devlink_trap_item_lookup(devlink, trap->name);
10949 if (WARN_ON_ONCE(!trap_item))
10950 return;
10951
10952 devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_DEL);
10953 list_del(&trap_item->list);
10954 if (devlink->ops->trap_fini)
10955 devlink->ops->trap_fini(devlink, trap, trap_item);
10956 free_percpu(trap_item->stats);
10957 kfree(trap_item);
10958}
10959
10960static void devlink_trap_disable(struct devlink *devlink,
10961 const struct devlink_trap *trap)
10962{
10963 struct devlink_trap_item *trap_item;
10964
10965 trap_item = devlink_trap_item_lookup(devlink, trap->name);
10966 if (WARN_ON_ONCE(!trap_item))
10967 return;
10968
10969 devlink->ops->trap_action_set(devlink, trap, DEVLINK_TRAP_ACTION_DROP,
10970 NULL);
10971 trap_item->action = DEVLINK_TRAP_ACTION_DROP;
10972}
10973
10974
10975
10976
10977
10978
10979
10980
10981
10982
10983int devlink_traps_register(struct devlink *devlink,
10984 const struct devlink_trap *traps,
10985 size_t traps_count, void *priv)
10986{
10987 int i, err;
10988
10989 if (!devlink->ops->trap_init || !devlink->ops->trap_action_set)
10990 return -EINVAL;
10991
10992 mutex_lock(&devlink->lock);
10993 for (i = 0; i < traps_count; i++) {
10994 const struct devlink_trap *trap = &traps[i];
10995
10996 err = devlink_trap_verify(trap);
10997 if (err)
10998 goto err_trap_verify;
10999
11000 err = devlink_trap_register(devlink, trap, priv);
11001 if (err)
11002 goto err_trap_register;
11003 }
11004 mutex_unlock(&devlink->lock);
11005
11006 return 0;
11007
11008err_trap_register:
11009err_trap_verify:
11010 for (i--; i >= 0; i--)
11011 devlink_trap_unregister(devlink, &traps[i]);
11012 mutex_unlock(&devlink->lock);
11013 return err;
11014}
11015EXPORT_SYMBOL_GPL(devlink_traps_register);
11016
11017
11018
11019
11020
11021
11022
11023void devlink_traps_unregister(struct devlink *devlink,
11024 const struct devlink_trap *traps,
11025 size_t traps_count)
11026{
11027 int i;
11028
11029 mutex_lock(&devlink->lock);
11030
11031
11032
11033 for (i = traps_count - 1; i >= 0; i--)
11034 devlink_trap_disable(devlink, &traps[i]);
11035 synchronize_rcu();
11036 for (i = traps_count - 1; i >= 0; i--)
11037 devlink_trap_unregister(devlink, &traps[i]);
11038 mutex_unlock(&devlink->lock);
11039}
11040EXPORT_SYMBOL_GPL(devlink_traps_unregister);
11041
11042static void
11043devlink_trap_stats_update(struct devlink_stats __percpu *trap_stats,
11044 size_t skb_len)
11045{
11046 struct devlink_stats *stats;
11047
11048 stats = this_cpu_ptr(trap_stats);
11049 u64_stats_update_begin(&stats->syncp);
11050 stats->rx_bytes += skb_len;
11051 stats->rx_packets++;
11052 u64_stats_update_end(&stats->syncp);
11053}
11054
11055static void
11056devlink_trap_report_metadata_set(struct devlink_trap_metadata *metadata,
11057 const struct devlink_trap_item *trap_item,
11058 struct devlink_port *in_devlink_port,
11059 const struct flow_action_cookie *fa_cookie)
11060{
11061 metadata->trap_name = trap_item->trap->name;
11062 metadata->trap_group_name = trap_item->group_item->group->name;
11063 metadata->fa_cookie = fa_cookie;
11064 metadata->trap_type = trap_item->trap->type;
11065
11066 spin_lock(&in_devlink_port->type_lock);
11067 if (in_devlink_port->type == DEVLINK_PORT_TYPE_ETH)
11068 metadata->input_dev = in_devlink_port->type_dev;
11069 spin_unlock(&in_devlink_port->type_lock);
11070}
11071
11072
11073
11074
11075
11076
11077
11078
11079
11080void devlink_trap_report(struct devlink *devlink, struct sk_buff *skb,
11081 void *trap_ctx, struct devlink_port *in_devlink_port,
11082 const struct flow_action_cookie *fa_cookie)
11083
11084{
11085 struct devlink_trap_item *trap_item = trap_ctx;
11086
11087 devlink_trap_stats_update(trap_item->stats, skb->len);
11088 devlink_trap_stats_update(trap_item->group_item->stats, skb->len);
11089
11090 if (trace_devlink_trap_report_enabled()) {
11091 struct devlink_trap_metadata metadata = {};
11092
11093 devlink_trap_report_metadata_set(&metadata, trap_item,
11094 in_devlink_port, fa_cookie);
11095 trace_devlink_trap_report(devlink, skb, &metadata);
11096 }
11097}
11098EXPORT_SYMBOL_GPL(devlink_trap_report);
11099
11100
11101
11102
11103
11104
11105
11106void *devlink_trap_ctx_priv(void *trap_ctx)
11107{
11108 struct devlink_trap_item *trap_item = trap_ctx;
11109
11110 return trap_item->priv;
11111}
11112EXPORT_SYMBOL_GPL(devlink_trap_ctx_priv);
11113
11114static int
11115devlink_trap_group_item_policer_link(struct devlink *devlink,
11116 struct devlink_trap_group_item *group_item)
11117{
11118 u32 policer_id = group_item->group->init_policer_id;
11119 struct devlink_trap_policer_item *policer_item;
11120
11121 if (policer_id == 0)
11122 return 0;
11123
11124 policer_item = devlink_trap_policer_item_lookup(devlink, policer_id);
11125 if (WARN_ON_ONCE(!policer_item))
11126 return -EINVAL;
11127
11128 group_item->policer_item = policer_item;
11129
11130 return 0;
11131}
11132
11133static int
11134devlink_trap_group_register(struct devlink *devlink,
11135 const struct devlink_trap_group *group)
11136{
11137 struct devlink_trap_group_item *group_item;
11138 int err;
11139
11140 if (devlink_trap_group_item_lookup(devlink, group->name))
11141 return -EEXIST;
11142
11143 group_item = kzalloc(sizeof(*group_item), GFP_KERNEL);
11144 if (!group_item)
11145 return -ENOMEM;
11146
11147 group_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
11148 if (!group_item->stats) {
11149 err = -ENOMEM;
11150 goto err_stats_alloc;
11151 }
11152
11153 group_item->group = group;
11154
11155 err = devlink_trap_group_item_policer_link(devlink, group_item);
11156 if (err)
11157 goto err_policer_link;
11158
11159 if (devlink->ops->trap_group_init) {
11160 err = devlink->ops->trap_group_init(devlink, group);
11161 if (err)
11162 goto err_group_init;
11163 }
11164
11165 list_add_tail(&group_item->list, &devlink->trap_group_list);
11166 devlink_trap_group_notify(devlink, group_item,
11167 DEVLINK_CMD_TRAP_GROUP_NEW);
11168
11169 return 0;
11170
11171err_group_init:
11172err_policer_link:
11173 free_percpu(group_item->stats);
11174err_stats_alloc:
11175 kfree(group_item);
11176 return err;
11177}
11178
11179static void
11180devlink_trap_group_unregister(struct devlink *devlink,
11181 const struct devlink_trap_group *group)
11182{
11183 struct devlink_trap_group_item *group_item;
11184
11185 group_item = devlink_trap_group_item_lookup(devlink, group->name);
11186 if (WARN_ON_ONCE(!group_item))
11187 return;
11188
11189 devlink_trap_group_notify(devlink, group_item,
11190 DEVLINK_CMD_TRAP_GROUP_DEL);
11191 list_del(&group_item->list);
11192 free_percpu(group_item->stats);
11193 kfree(group_item);
11194}
11195
11196
11197
11198
11199
11200
11201
11202
11203
11204int devlink_trap_groups_register(struct devlink *devlink,
11205 const struct devlink_trap_group *groups,
11206 size_t groups_count)
11207{
11208 int i, err;
11209
11210 mutex_lock(&devlink->lock);
11211 for (i = 0; i < groups_count; i++) {
11212 const struct devlink_trap_group *group = &groups[i];
11213
11214 err = devlink_trap_group_verify(group);
11215 if (err)
11216 goto err_trap_group_verify;
11217
11218 err = devlink_trap_group_register(devlink, group);
11219 if (err)
11220 goto err_trap_group_register;
11221 }
11222 mutex_unlock(&devlink->lock);
11223
11224 return 0;
11225
11226err_trap_group_register:
11227err_trap_group_verify:
11228 for (i--; i >= 0; i--)
11229 devlink_trap_group_unregister(devlink, &groups[i]);
11230 mutex_unlock(&devlink->lock);
11231 return err;
11232}
11233EXPORT_SYMBOL_GPL(devlink_trap_groups_register);
11234
11235
11236
11237
11238
11239
11240
11241void devlink_trap_groups_unregister(struct devlink *devlink,
11242 const struct devlink_trap_group *groups,
11243 size_t groups_count)
11244{
11245 int i;
11246
11247 mutex_lock(&devlink->lock);
11248 for (i = groups_count - 1; i >= 0; i--)
11249 devlink_trap_group_unregister(devlink, &groups[i]);
11250 mutex_unlock(&devlink->lock);
11251}
11252EXPORT_SYMBOL_GPL(devlink_trap_groups_unregister);
11253
11254static void
11255devlink_trap_policer_notify(struct devlink *devlink,
11256 const struct devlink_trap_policer_item *policer_item,
11257 enum devlink_command cmd)
11258{
11259 struct sk_buff *msg;
11260 int err;
11261
11262 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_POLICER_NEW &&
11263 cmd != DEVLINK_CMD_TRAP_POLICER_DEL);
11264
11265 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11266 if (!msg)
11267 return;
11268
11269 err = devlink_nl_trap_policer_fill(msg, devlink, policer_item, cmd, 0,
11270 0, 0);
11271 if (err) {
11272 nlmsg_free(msg);
11273 return;
11274 }
11275
11276 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
11277 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
11278}
11279
11280static int
11281devlink_trap_policer_register(struct devlink *devlink,
11282 const struct devlink_trap_policer *policer)
11283{
11284 struct devlink_trap_policer_item *policer_item;
11285 int err;
11286
11287 if (devlink_trap_policer_item_lookup(devlink, policer->id))
11288 return -EEXIST;
11289
11290 policer_item = kzalloc(sizeof(*policer_item), GFP_KERNEL);
11291 if (!policer_item)
11292 return -ENOMEM;
11293
11294 policer_item->policer = policer;
11295 policer_item->rate = policer->init_rate;
11296 policer_item->burst = policer->init_burst;
11297
11298 if (devlink->ops->trap_policer_init) {
11299 err = devlink->ops->trap_policer_init(devlink, policer);
11300 if (err)
11301 goto err_policer_init;
11302 }
11303
11304 list_add_tail(&policer_item->list, &devlink->trap_policer_list);
11305 devlink_trap_policer_notify(devlink, policer_item,
11306 DEVLINK_CMD_TRAP_POLICER_NEW);
11307
11308 return 0;
11309
11310err_policer_init:
11311 kfree(policer_item);
11312 return err;
11313}
11314
11315static void
11316devlink_trap_policer_unregister(struct devlink *devlink,
11317 const struct devlink_trap_policer *policer)
11318{
11319 struct devlink_trap_policer_item *policer_item;
11320
11321 policer_item = devlink_trap_policer_item_lookup(devlink, policer->id);
11322 if (WARN_ON_ONCE(!policer_item))
11323 return;
11324
11325 devlink_trap_policer_notify(devlink, policer_item,
11326 DEVLINK_CMD_TRAP_POLICER_DEL);
11327 list_del(&policer_item->list);
11328 if (devlink->ops->trap_policer_fini)
11329 devlink->ops->trap_policer_fini(devlink, policer);
11330 kfree(policer_item);
11331}
11332
11333
11334
11335
11336
11337
11338
11339
11340
11341int
11342devlink_trap_policers_register(struct devlink *devlink,
11343 const struct devlink_trap_policer *policers,
11344 size_t policers_count)
11345{
11346 int i, err;
11347
11348 mutex_lock(&devlink->lock);
11349 for (i = 0; i < policers_count; i++) {
11350 const struct devlink_trap_policer *policer = &policers[i];
11351
11352 if (WARN_ON(policer->id == 0 ||
11353 policer->max_rate < policer->min_rate ||
11354 policer->max_burst < policer->min_burst)) {
11355 err = -EINVAL;
11356 goto err_trap_policer_verify;
11357 }
11358
11359 err = devlink_trap_policer_register(devlink, policer);
11360 if (err)
11361 goto err_trap_policer_register;
11362 }
11363 mutex_unlock(&devlink->lock);
11364
11365 return 0;
11366
11367err_trap_policer_register:
11368err_trap_policer_verify:
11369 for (i--; i >= 0; i--)
11370 devlink_trap_policer_unregister(devlink, &policers[i]);
11371 mutex_unlock(&devlink->lock);
11372 return err;
11373}
11374EXPORT_SYMBOL_GPL(devlink_trap_policers_register);
11375
11376
11377
11378
11379
11380
11381
11382void
11383devlink_trap_policers_unregister(struct devlink *devlink,
11384 const struct devlink_trap_policer *policers,
11385 size_t policers_count)
11386{
11387 int i;
11388
11389 mutex_lock(&devlink->lock);
11390 for (i = policers_count - 1; i >= 0; i--)
11391 devlink_trap_policer_unregister(devlink, &policers[i]);
11392 mutex_unlock(&devlink->lock);
11393}
11394EXPORT_SYMBOL_GPL(devlink_trap_policers_unregister);
11395
11396static void __devlink_compat_running_version(struct devlink *devlink,
11397 char *buf, size_t len)
11398{
11399 const struct nlattr *nlattr;
11400 struct devlink_info_req req;
11401 struct sk_buff *msg;
11402 int rem, err;
11403
11404 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11405 if (!msg)
11406 return;
11407
11408 req.msg = msg;
11409 err = devlink->ops->info_get(devlink, &req, NULL);
11410 if (err)
11411 goto free_msg;
11412
11413 nla_for_each_attr(nlattr, (void *)msg->data, msg->len, rem) {
11414 const struct nlattr *kv;
11415 int rem_kv;
11416
11417 if (nla_type(nlattr) != DEVLINK_ATTR_INFO_VERSION_RUNNING)
11418 continue;
11419
11420 nla_for_each_nested(kv, nlattr, rem_kv) {
11421 if (nla_type(kv) != DEVLINK_ATTR_INFO_VERSION_VALUE)
11422 continue;
11423
11424 strlcat(buf, nla_data(kv), len);
11425 strlcat(buf, " ", len);
11426 }
11427 }
11428free_msg:
11429 nlmsg_free(msg);
11430}
11431
11432void devlink_compat_running_version(struct net_device *dev,
11433 char *buf, size_t len)
11434{
11435 struct devlink *devlink;
11436
11437 dev_hold(dev);
11438 rtnl_unlock();
11439
11440 devlink = netdev_to_devlink(dev);
11441 if (!devlink || !devlink->ops->info_get)
11442 goto out;
11443
11444 mutex_lock(&devlink->lock);
11445 __devlink_compat_running_version(devlink, buf, len);
11446 mutex_unlock(&devlink->lock);
11447
11448out:
11449 rtnl_lock();
11450 dev_put(dev);
11451}
11452
11453int devlink_compat_flash_update(struct net_device *dev, const char *file_name)
11454{
11455 struct devlink_flash_update_params params = {};
11456 struct devlink *devlink;
11457 int ret;
11458
11459 dev_hold(dev);
11460 rtnl_unlock();
11461
11462 devlink = netdev_to_devlink(dev);
11463 if (!devlink || !devlink->ops->flash_update) {
11464 ret = -EOPNOTSUPP;
11465 goto out;
11466 }
11467
11468 ret = request_firmware(¶ms.fw, file_name, devlink->dev);
11469 if (ret)
11470 goto out;
11471
11472 mutex_lock(&devlink->lock);
11473 devlink_flash_update_begin_notify(devlink);
11474 ret = devlink->ops->flash_update(devlink, ¶ms, NULL);
11475 devlink_flash_update_end_notify(devlink);
11476 mutex_unlock(&devlink->lock);
11477
11478 release_firmware(params.fw);
11479
11480out:
11481 rtnl_lock();
11482 dev_put(dev);
11483
11484 return ret;
11485}
11486
11487int devlink_compat_phys_port_name_get(struct net_device *dev,
11488 char *name, size_t len)
11489{
11490 struct devlink_port *devlink_port;
11491
11492
11493
11494
11495
11496 ASSERT_RTNL();
11497
11498 devlink_port = netdev_to_devlink_port(dev);
11499 if (!devlink_port)
11500 return -EOPNOTSUPP;
11501
11502 return __devlink_port_phys_port_name_get(devlink_port, name, len);
11503}
11504
11505int devlink_compat_switch_id_get(struct net_device *dev,
11506 struct netdev_phys_item_id *ppid)
11507{
11508 struct devlink_port *devlink_port;
11509
11510
11511
11512
11513
11514 devlink_port = netdev_to_devlink_port(dev);
11515 if (!devlink_port || !devlink_port->switch_port)
11516 return -EOPNOTSUPP;
11517
11518 memcpy(ppid, &devlink_port->attrs.switch_id, sizeof(*ppid));
11519
11520 return 0;
11521}
11522
11523static void __net_exit devlink_pernet_pre_exit(struct net *net)
11524{
11525 struct devlink *devlink;
11526 u32 actions_performed;
11527 unsigned long index;
11528 int err;
11529
11530
11531
11532
11533 mutex_lock(&devlink_mutex);
11534 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
11535 if (!devlink_try_get(devlink))
11536 continue;
11537
11538 if (!net_eq(devlink_net(devlink), net))
11539 goto retry;
11540
11541 WARN_ON(!devlink_reload_supported(devlink->ops));
11542 err = devlink_reload(devlink, &init_net,
11543 DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
11544 DEVLINK_RELOAD_LIMIT_UNSPEC,
11545 &actions_performed, NULL);
11546 if (err && err != -EOPNOTSUPP)
11547 pr_warn("Failed to reload devlink instance into init_net\n");
11548retry:
11549 devlink_put(devlink);
11550 }
11551 mutex_unlock(&devlink_mutex);
11552}
11553
11554static struct pernet_operations devlink_pernet_ops __net_initdata = {
11555 .pre_exit = devlink_pernet_pre_exit,
11556};
11557
11558static int __init devlink_init(void)
11559{
11560 int err;
11561
11562 err = genl_register_family(&devlink_nl_family);
11563 if (err)
11564 goto out;
11565 err = register_pernet_subsys(&devlink_pernet_ops);
11566
11567out:
11568 WARN_ON(err);
11569 return err;
11570}
11571
11572subsys_initcall(devlink_init);
11573
