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