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Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
[linux-2.6-block.git] / net / core / devlink.c
CommitLineData
2874c5fd 1// SPDX-License-Identifier: GPL-2.0-or-later
bfcd3a46
JP		 2/*
3 * net/core/devlink.c - Network physical/parent device Netlink interface
4 *
5 * Heavily inspired by net/wireless/
6 * Copyright (c) 2016 Mellanox Technologies. All rights reserved.
7 * Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com>
bfcd3a46
JP		 8 */
9
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>
b8f97554 18#include <linux/spinlock.h>
b587bdaf 19#include <linux/refcount.h>
136bf27f 20#include <linux/workqueue.h>
0f420b6c
IS		 21#include <linux/u64_stats_sync.h>
22#include <linux/timekeeping.h>
bfcd3a46
JP		 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>
e5224f0f
JP		 30#define CREATE_TRACE_POINTS
31#include <trace/events/devlink.h>
32
11770091
AS		 33static struct devlink_dpipe_field devlink_dpipe_fields_ethernet[] = {
34 {
12bdc5e1 35 .name = "destination mac",
11770091
AS		 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
3fb886ec
AS		 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
1797f5b3
AS		 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
e5224f0f 84EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwmsg);
57186a5f 85EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwerr);
5b88823b 86EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_trap_report);
bfcd3a46 87
a1e8ae90
PP		 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 },
a556dded
PP		 90 [DEVLINK_PORT_FN_ATTR_STATE] =
91 NLA_POLICY_RANGE(NLA_U8, DEVLINK_PORT_FN_STATE_INACTIVE,
92 DEVLINK_PORT_FN_STATE_ACTIVE),
a1e8ae90
PP		 93};
94
bfcd3a46
JP		 95static LIST_HEAD(devlink_list);
96
97/* devlink_mutex
98 *
99 * An overall lock guarding every operation coming from userspace.
100 * It also guards devlink devices list and it is taken when
101 * driver registers/unregisters it.
102 */
103static DEFINE_MUTEX(devlink_mutex);
104
471f894f 105struct net *devlink_net(const struct devlink *devlink)
bfcd3a46
JP		 106{
107 return read_pnet(&devlink->_net);
108}
471f894f 109EXPORT_SYMBOL_GPL(devlink_net);
bfcd3a46 110
8273fd84 111static void __devlink_net_set(struct devlink *devlink, struct net *net)
bfcd3a46
JP		 112{
113 write_pnet(&devlink->_net, net);
114}
115
8273fd84
JP		 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
bfcd3a46
JP		 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
dac7c08f
PP		 137 lockdep_assert_held(&devlink_mutex);
138
bfcd3a46
JP		 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,
c7282b50 155 unsigned int port_index)
bfcd3a46
JP		 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
c7282b50
PP		 166static bool devlink_port_index_exists(struct devlink *devlink,
167 unsigned int port_index)
bfcd3a46
JP		 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
bf797471
JP		 193struct devlink_sb {
194 struct list_head list;
195 unsigned int index;
196 u32 size;
197 u16 ingress_pools_count;
198 u16 egress_pools_count;
199 u16 ingress_tc_count;
200 u16 egress_tc_count;
201};
202
203static u16 devlink_sb_pool_count(struct devlink_sb *devlink_sb)
204{
205 return devlink_sb->ingress_pools_count + devlink_sb->egress_pools_count;
206}
207
208static struct devlink_sb *devlink_sb_get_by_index(struct devlink *devlink,
209 unsigned int sb_index)
210{
211 struct devlink_sb *devlink_sb;
212
213 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
214 if (devlink_sb->index == sb_index)
215 return devlink_sb;
216 }
217 return NULL;
218}
219
220static bool devlink_sb_index_exists(struct devlink *devlink,
221 unsigned int sb_index)
222{
223 return devlink_sb_get_by_index(devlink, sb_index);
224}
225
226static struct devlink_sb *devlink_sb_get_from_attrs(struct devlink *devlink,
227 struct nlattr **attrs)
228{
229 if (attrs[DEVLINK_ATTR_SB_INDEX]) {
230 u32 sb_index = nla_get_u32(attrs[DEVLINK_ATTR_SB_INDEX]);
231 struct devlink_sb *devlink_sb;
232
233 devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
234 if (!devlink_sb)
235 return ERR_PTR(-ENODEV);
236 return devlink_sb;
237 }
238 return ERR_PTR(-EINVAL);
239}
240
241static struct devlink_sb *devlink_sb_get_from_info(struct devlink *devlink,
242 struct genl_info *info)
243{
244 return devlink_sb_get_from_attrs(devlink, info->attrs);
245}
246
247static int devlink_sb_pool_index_get_from_attrs(struct devlink_sb *devlink_sb,
248 struct nlattr **attrs,
249 u16 *p_pool_index)
250{
251 u16 val;
252
253 if (!attrs[DEVLINK_ATTR_SB_POOL_INDEX])
254 return -EINVAL;
255
256 val = nla_get_u16(attrs[DEVLINK_ATTR_SB_POOL_INDEX]);
257 if (val >= devlink_sb_pool_count(devlink_sb))
258 return -EINVAL;
259 *p_pool_index = val;
260 return 0;
261}
262
263static int devlink_sb_pool_index_get_from_info(struct devlink_sb *devlink_sb,
264 struct genl_info *info,
265 u16 *p_pool_index)
266{
267 return devlink_sb_pool_index_get_from_attrs(devlink_sb, info->attrs,
268 p_pool_index);
269}
270
271static int
272devlink_sb_pool_type_get_from_attrs(struct nlattr **attrs,
273 enum devlink_sb_pool_type *p_pool_type)
274{
275 u8 val;
276
277 if (!attrs[DEVLINK_ATTR_SB_POOL_TYPE])
278 return -EINVAL;
279
280 val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_TYPE]);
281 if (val != DEVLINK_SB_POOL_TYPE_INGRESS &&
282 val != DEVLINK_SB_POOL_TYPE_EGRESS)
283 return -EINVAL;
284 *p_pool_type = val;
285 return 0;
286}
287
288static int
289devlink_sb_pool_type_get_from_info(struct genl_info *info,
290 enum devlink_sb_pool_type *p_pool_type)
291{
292 return devlink_sb_pool_type_get_from_attrs(info->attrs, p_pool_type);
293}
294
295static int
296devlink_sb_th_type_get_from_attrs(struct nlattr **attrs,
297 enum devlink_sb_threshold_type *p_th_type)
298{
299 u8 val;
300
301 if (!attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE])
302 return -EINVAL;
303
304 val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE]);
305 if (val != DEVLINK_SB_THRESHOLD_TYPE_STATIC &&
306 val != DEVLINK_SB_THRESHOLD_TYPE_DYNAMIC)
307 return -EINVAL;
308 *p_th_type = val;
309 return 0;
310}
311
312static int
313devlink_sb_th_type_get_from_info(struct genl_info *info,
314 enum devlink_sb_threshold_type *p_th_type)
315{
316 return devlink_sb_th_type_get_from_attrs(info->attrs, p_th_type);
317}
318
319static int
320devlink_sb_tc_index_get_from_attrs(struct devlink_sb *devlink_sb,
321 struct nlattr **attrs,
322 enum devlink_sb_pool_type pool_type,
323 u16 *p_tc_index)
324{
325 u16 val;
326
327 if (!attrs[DEVLINK_ATTR_SB_TC_INDEX])
328 return -EINVAL;
329
330 val = nla_get_u16(attrs[DEVLINK_ATTR_SB_TC_INDEX]);
331 if (pool_type == DEVLINK_SB_POOL_TYPE_INGRESS &&
332 val >= devlink_sb->ingress_tc_count)
333 return -EINVAL;
334 if (pool_type == DEVLINK_SB_POOL_TYPE_EGRESS &&
335 val >= devlink_sb->egress_tc_count)
336 return -EINVAL;
337 *p_tc_index = val;
338 return 0;
339}
340
341static int
342devlink_sb_tc_index_get_from_info(struct devlink_sb *devlink_sb,
343 struct genl_info *info,
344 enum devlink_sb_pool_type pool_type,
345 u16 *p_tc_index)
346{
347 return devlink_sb_tc_index_get_from_attrs(devlink_sb, info->attrs,
348 pool_type, p_tc_index);
349}
350
b16ebe92
AV		 351struct devlink_region {
352 struct devlink *devlink;
544e7c33 353 struct devlink_port *port;
b16ebe92 354 struct list_head list;
544e7c33
AL		 355 union {
356 const struct devlink_region_ops *ops;
357 const struct devlink_port_region_ops *port_ops;
358 };
b16ebe92
AV		 359 struct list_head snapshot_list;
360 u32 max_snapshots;
361 u32 cur_snapshots;
362 u64 size;
363};
364
d7e52722
AV		 365struct devlink_snapshot {
366 struct list_head list;
367 struct devlink_region *region;
d7e52722
AV		 368 u8 *data;
369 u32 id;
370};
371
b16ebe92
AV		 372static struct devlink_region *
373devlink_region_get_by_name(struct devlink *devlink, const char *region_name)
374{
375 struct devlink_region *region;
376
377 list_for_each_entry(region, &devlink->region_list, list)
e8937681 378 if (!strcmp(region->ops->name, region_name))
b16ebe92
AV		 379 return region;
380
381 return NULL;
382}
383
544e7c33
AL		 384static struct devlink_region *
385devlink_port_region_get_by_name(struct devlink_port *port,
386 const char *region_name)
387{
388 struct devlink_region *region;
389
390 list_for_each_entry(region, &port->region_list, list)
391 if (!strcmp(region->ops->name, region_name))
392 return region;
393
394 return NULL;
395}
396
d7e52722
AV		 397static struct devlink_snapshot *
398devlink_region_snapshot_get_by_id(struct devlink_region *region, u32 id)
399{
400 struct devlink_snapshot *snapshot;
401
402 list_for_each_entry(snapshot, &region->snapshot_list, list)
403 if (snapshot->id == id)
404 return snapshot;
405
406 return NULL;
407}
408
637989b5
PP		 409#define DEVLINK_NL_FLAG_NEED_PORT BIT(0)
410#define DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT BIT(1)
2406e7e5
AS		 411
412/* The per devlink instance lock is taken by default in the pre-doit
413 * operation, yet several commands do not require this. The global
414 * devlink lock is taken and protects from disruption by user-calls.
415 */
637989b5 416#define DEVLINK_NL_FLAG_NO_LOCK BIT(2)
bfcd3a46
JP		 417
418static int devlink_nl_pre_doit(const struct genl_ops *ops,
419 struct sk_buff *skb, struct genl_info *info)
420{
f4f54166 421 struct devlink_port *devlink_port;
bfcd3a46 422 struct devlink *devlink;
2406e7e5 423 int err;
bfcd3a46
JP		 424
425 mutex_lock(&devlink_mutex);
426 devlink = devlink_get_from_info(info);
427 if (IS_ERR(devlink)) {
428 mutex_unlock(&devlink_mutex);
429 return PTR_ERR(devlink);
430 }
2406e7e5
AS		 431 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
432 mutex_lock(&devlink->lock);
637989b5
PP		 433 info->user_ptr[0] = devlink;
434 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT) {
bfcd3a46
JP		 435 devlink_port = devlink_port_get_from_info(devlink, info);
436 if (IS_ERR(devlink_port)) {
2406e7e5
AS		 437 err = PTR_ERR(devlink_port);
438 goto unlock;
bfcd3a46 439 }
637989b5 440 info->user_ptr[1] = devlink_port;
f4f54166 441 } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT) {
f4f54166
VT		 442 devlink_port = devlink_port_get_from_info(devlink, info);
443 if (!IS_ERR(devlink_port))
444 info->user_ptr[1] = devlink_port;
bfcd3a46
JP		 445 }
446 return 0;
2406e7e5
AS		 447
448unlock:
449 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
450 mutex_unlock(&devlink->lock);
451 mutex_unlock(&devlink_mutex);
452 return err;
bfcd3a46
JP		 453}
454
455static void devlink_nl_post_doit(const struct genl_ops *ops,
456 struct sk_buff *skb, struct genl_info *info)
457{
2406e7e5
AS		 458 struct devlink *devlink;
459
637989b5
PP		 460 devlink = info->user_ptr[0];
461 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
2406e7e5 462 mutex_unlock(&devlink->lock);
bfcd3a46
JP		 463 mutex_unlock(&devlink_mutex);
464}
465
489111e5 466static struct genl_family devlink_nl_family;
bfcd3a46
JP		 467
468enum devlink_multicast_groups {
469 DEVLINK_MCGRP_CONFIG,
470};
471
472static const struct genl_multicast_group devlink_nl_mcgrps[] = {
473 [DEVLINK_MCGRP_CONFIG] = { .name = DEVLINK_GENL_MCGRP_CONFIG_NAME },
474};
475
476static int devlink_nl_put_handle(struct sk_buff *msg, struct devlink *devlink)
477{
478 if (nla_put_string(msg, DEVLINK_ATTR_BUS_NAME, devlink->dev->bus->name))
479 return -EMSGSIZE;
480 if (nla_put_string(msg, DEVLINK_ATTR_DEV_NAME, dev_name(devlink->dev)))
481 return -EMSGSIZE;
482 return 0;
483}
484
dc64cc7c
MS		 485struct devlink_reload_combination {
486 enum devlink_reload_action action;
487 enum devlink_reload_limit limit;
488};
489
490static const struct devlink_reload_combination devlink_reload_invalid_combinations[] = {
491 {
492 /* can't reinitialize driver with no down time */
493 .action = DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
494 .limit = DEVLINK_RELOAD_LIMIT_NO_RESET,
495 },
496};
497
498static bool
499devlink_reload_combination_is_invalid(enum devlink_reload_action action,
500 enum devlink_reload_limit limit)
501{
502 int i;
503
504 for (i = 0; i < ARRAY_SIZE(devlink_reload_invalid_combinations); i++)
505 if (devlink_reload_invalid_combinations[i].action == action &&
506 devlink_reload_invalid_combinations[i].limit == limit)
507 return true;
508 return false;
509}
510
ccdf0721
MS		 511static bool
512devlink_reload_action_is_supported(struct devlink *devlink, enum devlink_reload_action action)
513{
514 return test_bit(action, &devlink->ops->reload_actions);
515}
516
dc64cc7c
MS		 517static bool
518devlink_reload_limit_is_supported(struct devlink *devlink, enum devlink_reload_limit limit)
519{
520 return test_bit(limit, &devlink->ops->reload_limits);
521}
522
5204bb68 523static int devlink_reload_stat_put(struct sk_buff *msg,
a254c264
MS		 524 enum devlink_reload_limit limit, u32 value)
525{
526 struct nlattr *reload_stats_entry;
527
528 reload_stats_entry = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_STATS_ENTRY);
529 if (!reload_stats_entry)
530 return -EMSGSIZE;
531
5204bb68 532 if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_STATS_LIMIT, limit) ||
a254c264
MS		 533 nla_put_u32(msg, DEVLINK_ATTR_RELOAD_STATS_VALUE, value))
534 goto nla_put_failure;
535 nla_nest_end(msg, reload_stats_entry);
536 return 0;
537
538nla_put_failure:
539 nla_nest_cancel(msg, reload_stats_entry);
540 return -EMSGSIZE;
541}
542
77069ba2 543static int devlink_reload_stats_put(struct sk_buff *msg, struct devlink *devlink, bool is_remote)
a254c264 544{
5204bb68 545 struct nlattr *reload_stats_attr, *act_info, *act_stats;
a254c264
MS		 546 int i, j, stat_idx;
547 u32 value;
548
77069ba2
MS		 549 if (!is_remote)
550 reload_stats_attr = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_STATS);
551 else
552 reload_stats_attr = nla_nest_start(msg, DEVLINK_ATTR_REMOTE_RELOAD_STATS);
a254c264
MS		 553
554 if (!reload_stats_attr)
555 return -EMSGSIZE;
556
5204bb68
MS		 557 for (i = 0; i <= DEVLINK_RELOAD_ACTION_MAX; i++) {
558 if ((!is_remote &&
559 !devlink_reload_action_is_supported(devlink, i)) ||
560 i == DEVLINK_RELOAD_ACTION_UNSPEC)
a254c264 561 continue;
5204bb68
MS		 562 act_info = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_ACTION_INFO);
563 if (!act_info)
564 goto nla_put_failure;
565
566 if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_ACTION, i))
567 goto action_info_nest_cancel;
568 act_stats = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_ACTION_STATS);
569 if (!act_stats)
570 goto action_info_nest_cancel;
571
572 for (j = 0; j <= DEVLINK_RELOAD_LIMIT_MAX; j++) {
573 /* Remote stats are shown even if not locally supported.
574 * Stats of actions with unspecified limit are shown
575 * though drivers don't need to register unspecified
576 * limit.
577 */
578 if ((!is_remote && j != DEVLINK_RELOAD_LIMIT_UNSPEC &&
579 !devlink_reload_limit_is_supported(devlink, j)) ||
a254c264
MS		 580 devlink_reload_combination_is_invalid(i, j))
581 continue;
582
583 stat_idx = j * __DEVLINK_RELOAD_ACTION_MAX + i;
77069ba2
MS		 584 if (!is_remote)
585 value = devlink->stats.reload_stats[stat_idx];
586 else
587 value = devlink->stats.remote_reload_stats[stat_idx];
5204bb68
MS		 588 if (devlink_reload_stat_put(msg, j, value))
589 goto action_stats_nest_cancel;
a254c264 590 }
5204bb68
MS		 591 nla_nest_end(msg, act_stats);
592 nla_nest_end(msg, act_info);
a254c264
MS		 593 }
594 nla_nest_end(msg, reload_stats_attr);
595 return 0;
596
5204bb68
MS		 597action_stats_nest_cancel:
598 nla_nest_cancel(msg, act_stats);
599action_info_nest_cancel:
600 nla_nest_cancel(msg, act_info);
a254c264
MS		 601nla_put_failure:
602 nla_nest_cancel(msg, reload_stats_attr);
603 return -EMSGSIZE;
604}
605
bfcd3a46
JP		 606static int devlink_nl_fill(struct sk_buff *msg, struct devlink *devlink,
607 enum devlink_command cmd, u32 portid,
608 u32 seq, int flags)
609{
a254c264 610 struct nlattr *dev_stats;
bfcd3a46
JP		 611 void *hdr;
612
613 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
614 if (!hdr)
615 return -EMSGSIZE;
616
617 if (devlink_nl_put_handle(msg, devlink))
618 goto nla_put_failure;
2670ac26
JP		 619 if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_FAILED, devlink->reload_failed))
620 goto nla_put_failure;
bfcd3a46 621
a254c264
MS		 622 dev_stats = nla_nest_start(msg, DEVLINK_ATTR_DEV_STATS);
623 if (!dev_stats)
624 goto nla_put_failure;
625
77069ba2
MS		 626 if (devlink_reload_stats_put(msg, devlink, false))
627 goto dev_stats_nest_cancel;
628 if (devlink_reload_stats_put(msg, devlink, true))
a254c264
MS		 629 goto dev_stats_nest_cancel;
630
631 nla_nest_end(msg, dev_stats);
bfcd3a46
JP		 632 genlmsg_end(msg, hdr);
633 return 0;
634
a254c264
MS		 635dev_stats_nest_cancel:
636 nla_nest_cancel(msg, dev_stats);
bfcd3a46
JP		 637nla_put_failure:
638 genlmsg_cancel(msg, hdr);
639 return -EMSGSIZE;
640}
641
642static void devlink_notify(struct devlink *devlink, enum devlink_command cmd)
643{
644 struct sk_buff *msg;
645 int err;
646
647 WARN_ON(cmd != DEVLINK_CMD_NEW && cmd != DEVLINK_CMD_DEL);
648
649 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
650 if (!msg)
651 return;
652
653 err = devlink_nl_fill(msg, devlink, cmd, 0, 0, 0);
654 if (err) {
655 nlmsg_free(msg);
656 return;
657 }
658
659 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
660 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
661}
662
b9ffcbaf
JP		 663static int devlink_nl_port_attrs_put(struct sk_buff *msg,
664 struct devlink_port *devlink_port)
665{
666 struct devlink_port_attrs *attrs = &devlink_port->attrs;
667
10a429ba 668 if (!devlink_port->attrs_set)
b9ffcbaf 669 return 0;
a21cf0a8
DR		 670 if (attrs->lanes) {
671 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_LANES, attrs->lanes))
672 return -EMSGSIZE;
673 }
a0f49b54
DR		 674 if (nla_put_u8(msg, DEVLINK_ATTR_PORT_SPLITTABLE, attrs->splittable))
675 return -EMSGSIZE;
5ec1380a
JP		 676 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_FLAVOUR, attrs->flavour))
677 return -EMSGSIZE;
58b6be41
PP		 678 switch (devlink_port->attrs.flavour) {
679 case DEVLINK_PORT_FLAVOUR_PCI_PF:
3a2d9588
PP		 680 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
681 attrs->pci_pf.controller) ||
682 nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_pf.pf))
98fd2d65 683 return -EMSGSIZE;
05b595e9
PP		 684 if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_pf.external))
685 return -EMSGSIZE;
58b6be41
PP		 686 break;
687 case DEVLINK_PORT_FLAVOUR_PCI_VF:
3a2d9588
PP		 688 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
689 attrs->pci_vf.controller) ||
690 nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_vf.pf) ||
691 nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_VF_NUMBER, attrs->pci_vf.vf))
e41b6bf3 692 return -EMSGSIZE;
05b595e9
PP		 693 if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_vf.external))
694 return -EMSGSIZE;
58b6be41 695 break;
b8288837
PP		 696 case DEVLINK_PORT_FLAVOUR_PCI_SF:
697 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
698 attrs->pci_sf.controller) ||
699 nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER,
700 attrs->pci_sf.pf) ||
701 nla_put_u32(msg, DEVLINK_ATTR_PORT_PCI_SF_NUMBER,
702 attrs->pci_sf.sf))
703 return -EMSGSIZE;
704 break;
58b6be41
PP		 705 case DEVLINK_PORT_FLAVOUR_PHYSICAL:
706 case DEVLINK_PORT_FLAVOUR_CPU:
707 case DEVLINK_PORT_FLAVOUR_DSA:
acf1ee44 708 case DEVLINK_PORT_FLAVOUR_VIRTUAL:
58b6be41
PP		 709 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_NUMBER,
710 attrs->phys.port_number))
711 return -EMSGSIZE;
712 if (!attrs->split)
713 return 0;
714 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_GROUP,
715 attrs->phys.port_number))
716 return -EMSGSIZE;
717 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_SUBPORT_NUMBER,
718 attrs->phys.split_subport_number))
719 return -EMSGSIZE;
720 break;
721 default:
722 break;
98fd2d65 723 }
b9ffcbaf
JP		 724 return 0;
725}
726
1230d948
PP		 727static int
728devlink_port_fn_hw_addr_fill(struct devlink *devlink, const struct devlink_ops *ops,
729 struct devlink_port *port, struct sk_buff *msg,
730 struct netlink_ext_ack *extack, bool *msg_updated)
731{
732 u8 hw_addr[MAX_ADDR_LEN];
733 int hw_addr_len;
734 int err;
735
736 if (!ops->port_function_hw_addr_get)
737 return 0;
738
739 err = ops->port_function_hw_addr_get(devlink, port, hw_addr, &hw_addr_len, extack);
740 if (err) {
741 if (err == -EOPNOTSUPP)
742 return 0;
743 return err;
744 }
745 err = nla_put(msg, DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR, hw_addr_len, hw_addr);
746 if (err)
747 return err;
748 *msg_updated = true;
749 return 0;
750}
751
a556dded
PP		 752static bool
753devlink_port_fn_state_valid(enum devlink_port_fn_state state)
754{
755 return state == DEVLINK_PORT_FN_STATE_INACTIVE ||
756 state == DEVLINK_PORT_FN_STATE_ACTIVE;
757}
758
759static bool
760devlink_port_fn_opstate_valid(enum devlink_port_fn_opstate opstate)
761{
762 return opstate == DEVLINK_PORT_FN_OPSTATE_DETACHED ||
763 opstate == DEVLINK_PORT_FN_OPSTATE_ATTACHED;
764}
765
766static int
767devlink_port_fn_state_fill(struct devlink *devlink,
768 const struct devlink_ops *ops,
769 struct devlink_port *port, struct sk_buff *msg,
770 struct netlink_ext_ack *extack,
771 bool *msg_updated)
772{
773 enum devlink_port_fn_opstate opstate;
774 enum devlink_port_fn_state state;
775 int err;
776
777 if (!ops->port_fn_state_get)
778 return 0;
779
780 err = ops->port_fn_state_get(devlink, port, &state, &opstate, extack);
781 if (err) {
782 if (err == -EOPNOTSUPP)
783 return 0;
784 return err;
785 }
786 if (!devlink_port_fn_state_valid(state)) {
787 WARN_ON_ONCE(1);
788 NL_SET_ERR_MSG_MOD(extack, "Invalid state read from driver");
789 return -EINVAL;
790 }
791 if (!devlink_port_fn_opstate_valid(opstate)) {
792 WARN_ON_ONCE(1);
793 NL_SET_ERR_MSG_MOD(extack,
794 "Invalid operational state read from driver");
795 return -EINVAL;
796 }
797 if (nla_put_u8(msg, DEVLINK_PORT_FN_ATTR_STATE, state) ||
798 nla_put_u8(msg, DEVLINK_PORT_FN_ATTR_OPSTATE, opstate))
799 return -EMSGSIZE;
800 *msg_updated = true;
801 return 0;
802}
803
2a916ecc
PP		 804static int
805devlink_nl_port_function_attrs_put(struct sk_buff *msg, struct devlink_port *port,
806 struct netlink_ext_ack *extack)
807{
808 struct devlink *devlink = port->devlink;
809 const struct devlink_ops *ops;
810 struct nlattr *function_attr;
1230d948
PP		 811 bool msg_updated = false;
812 int err;
2a916ecc
PP		 813
814 function_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PORT_FUNCTION);
815 if (!function_attr)
816 return -EMSGSIZE;
817
818 ops = devlink->ops;
1230d948
PP		 819 err = devlink_port_fn_hw_addr_fill(devlink, ops, port, msg,
820 extack, &msg_updated);
a556dded
PP		 821 if (err)
822 goto out;
823 err = devlink_port_fn_state_fill(devlink, ops, port, msg, extack,
824 &msg_updated);
2a916ecc 825out:
1230d948 826 if (err || !msg_updated)
2a916ecc
PP		 827 nla_nest_cancel(msg, function_attr);
828 else
829 nla_nest_end(msg, function_attr);
830 return err;
831}
832
bfcd3a46
JP		 833static int devlink_nl_port_fill(struct sk_buff *msg, struct devlink *devlink,
834 struct devlink_port *devlink_port,
835 enum devlink_command cmd, u32 portid,
a829eb0d
PP		 836 u32 seq, int flags,
837 struct netlink_ext_ack *extack)
bfcd3a46
JP		 838{
839 void *hdr;
840
841 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
842 if (!hdr)
843 return -EMSGSIZE;
844
845 if (devlink_nl_put_handle(msg, devlink))
846 goto nla_put_failure;
847 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
848 goto nla_put_failure;
b8f97554 849
b187c9b4
PP		 850 /* Hold rtnl lock while accessing port's netdev attributes. */
851 rtnl_lock();
0f420b6c 852 spin_lock_bh(&devlink_port->type_lock);
bfcd3a46 853 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_TYPE, devlink_port->type))
b8f97554 854 goto nla_put_failure_type_locked;
bfcd3a46
JP		 855 if (devlink_port->desired_type != DEVLINK_PORT_TYPE_NOTSET &&
856 nla_put_u16(msg, DEVLINK_ATTR_PORT_DESIRED_TYPE,
857 devlink_port->desired_type))
b8f97554 858 goto nla_put_failure_type_locked;
bfcd3a46 859 if (devlink_port->type == DEVLINK_PORT_TYPE_ETH) {
a7b43649 860 struct net *net = devlink_net(devlink_port->devlink);
bfcd3a46
JP		 861 struct net_device *netdev = devlink_port->type_dev;
862
a7b43649 863 if (netdev && net_eq(net, dev_net(netdev)) &&
bfcd3a46
JP		 864 (nla_put_u32(msg, DEVLINK_ATTR_PORT_NETDEV_IFINDEX,
865 netdev->ifindex) ||
866 nla_put_string(msg, DEVLINK_ATTR_PORT_NETDEV_NAME,
867 netdev->name)))
b8f97554 868 goto nla_put_failure_type_locked;
bfcd3a46
JP		 869 }
870 if (devlink_port->type == DEVLINK_PORT_TYPE_IB) {
871 struct ib_device *ibdev = devlink_port->type_dev;
872
873 if (ibdev &&
874 nla_put_string(msg, DEVLINK_ATTR_PORT_IBDEV_NAME,
875 ibdev->name))
b8f97554 876 goto nla_put_failure_type_locked;
bfcd3a46 877 }
0f420b6c 878 spin_unlock_bh(&devlink_port->type_lock);
b187c9b4 879 rtnl_unlock();
b9ffcbaf 880 if (devlink_nl_port_attrs_put(msg, devlink_port))
bfcd3a46 881 goto nla_put_failure;
2a916ecc
PP		 882 if (devlink_nl_port_function_attrs_put(msg, devlink_port, extack))
883 goto nla_put_failure;
bfcd3a46
JP		 884
885 genlmsg_end(msg, hdr);
886 return 0;
887
b8f97554 888nla_put_failure_type_locked:
0f420b6c 889 spin_unlock_bh(&devlink_port->type_lock);
b187c9b4 890 rtnl_unlock();
bfcd3a46
JP		 891nla_put_failure:
892 genlmsg_cancel(msg, hdr);
893 return -EMSGSIZE;
894}
895
896static void devlink_port_notify(struct devlink_port *devlink_port,
897 enum devlink_command cmd)
898{
899 struct devlink *devlink = devlink_port->devlink;
900 struct sk_buff *msg;
901 int err;
902
903 if (!devlink_port->registered)
904 return;
905
906 WARN_ON(cmd != DEVLINK_CMD_PORT_NEW && cmd != DEVLINK_CMD_PORT_DEL);
907
908 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
909 if (!msg)
910 return;
911
a829eb0d
PP		 912 err = devlink_nl_port_fill(msg, devlink, devlink_port, cmd, 0, 0, 0,
913 NULL);
bfcd3a46
JP		 914 if (err) {
915 nlmsg_free(msg);
916 return;
917 }
918
919 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
920 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
921}
922
923static int devlink_nl_cmd_get_doit(struct sk_buff *skb, struct genl_info *info)
924{
925 struct devlink *devlink = info->user_ptr[0];
926 struct sk_buff *msg;
927 int err;
928
929 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
930 if (!msg)
931 return -ENOMEM;
932
933 err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
934 info->snd_portid, info->snd_seq, 0);
935 if (err) {
936 nlmsg_free(msg);
937 return err;
938 }
939
940 return genlmsg_reply(msg, info);
941}
942
943static int devlink_nl_cmd_get_dumpit(struct sk_buff *msg,
944 struct netlink_callback *cb)
945{
946 struct devlink *devlink;
947 int start = cb->args[0];
948 int idx = 0;
949 int err;
950
951 mutex_lock(&devlink_mutex);
952 list_for_each_entry(devlink, &devlink_list, list) {
953 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
954 continue;
955 if (idx < start) {
956 idx++;
957 continue;
958 }
959 err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
960 NETLINK_CB(cb->skb).portid,
961 cb->nlh->nlmsg_seq, NLM_F_MULTI);
962 if (err)
963 goto out;
964 idx++;
965 }
966out:
967 mutex_unlock(&devlink_mutex);
968
969 cb->args[0] = idx;
970 return msg->len;
971}
972
973static int devlink_nl_cmd_port_get_doit(struct sk_buff *skb,
974 struct genl_info *info)
975{
637989b5 976 struct devlink_port *devlink_port = info->user_ptr[1];
1fc2257e 977 struct devlink *devlink = devlink_port->devlink;
bfcd3a46
JP		 978 struct sk_buff *msg;
979 int err;
980
981 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
982 if (!msg)
983 return -ENOMEM;
984
985 err = devlink_nl_port_fill(msg, devlink, devlink_port,
986 DEVLINK_CMD_PORT_NEW,
a829eb0d
PP		 987 info->snd_portid, info->snd_seq, 0,
988 info->extack);
bfcd3a46
JP		 989 if (err) {
990 nlmsg_free(msg);
991 return err;
992 }
993
994 return genlmsg_reply(msg, info);
995}
996
997static int devlink_nl_cmd_port_get_dumpit(struct sk_buff *msg,
998 struct netlink_callback *cb)
999{
1000 struct devlink *devlink;
1001 struct devlink_port *devlink_port;
1002 int start = cb->args[0];
1003 int idx = 0;
1004 int err;
1005
1006 mutex_lock(&devlink_mutex);
bfcd3a46
JP		 1007 list_for_each_entry(devlink, &devlink_list, list) {
1008 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
1009 continue;
2406e7e5 1010 mutex_lock(&devlink->lock);
bfcd3a46
JP		 1011 list_for_each_entry(devlink_port, &devlink->port_list, list) {
1012 if (idx < start) {
1013 idx++;
1014 continue;
1015 }
1016 err = devlink_nl_port_fill(msg, devlink, devlink_port,
1017 DEVLINK_CMD_NEW,
1018 NETLINK_CB(cb->skb).portid,
1019 cb->nlh->nlmsg_seq,
a829eb0d
PP		 1020 NLM_F_MULTI,
1021 cb->extack);
2406e7e5
AS		 1022 if (err) {
1023 mutex_unlock(&devlink->lock);
bfcd3a46 1024 goto out;
2406e7e5 1025 }
bfcd3a46
JP		 1026 idx++;
1027 }
2406e7e5 1028 mutex_unlock(&devlink->lock);
bfcd3a46
JP		 1029 }
1030out:
bfcd3a46
JP		 1031 mutex_unlock(&devlink_mutex);
1032
1033 cb->args[0] = idx;
1034 return msg->len;
1035}
1036
1037static int devlink_port_type_set(struct devlink *devlink,
1038 struct devlink_port *devlink_port,
1039 enum devlink_port_type port_type)
1040
1041{
1042 int err;
1043
be6fe1d8 1044 if (devlink->ops->port_type_set) {
6edf1017
ER		 1045 if (port_type == devlink_port->type)
1046 return 0;
bfcd3a46
JP		 1047 err = devlink->ops->port_type_set(devlink_port, port_type);
1048 if (err)
1049 return err;
1050 devlink_port->desired_type = port_type;
1051 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
1052 return 0;
1053 }
1054 return -EOPNOTSUPP;
1055}
1056
a1e8ae90
PP		 1057static int
1058devlink_port_function_hw_addr_set(struct devlink *devlink, struct devlink_port *port,
1059 const struct nlattr *attr, struct netlink_ext_ack *extack)
1060{
1061 const struct devlink_ops *ops;
1062 const u8 *hw_addr;
1063 int hw_addr_len;
a1e8ae90
PP		 1064
1065 hw_addr = nla_data(attr);
1066 hw_addr_len = nla_len(attr);
1067 if (hw_addr_len > MAX_ADDR_LEN) {
1068 NL_SET_ERR_MSG_MOD(extack, "Port function hardware address too long");
1069 return -EINVAL;
1070 }
1071 if (port->type == DEVLINK_PORT_TYPE_ETH) {
1072 if (hw_addr_len != ETH_ALEN) {
1073 NL_SET_ERR_MSG_MOD(extack, "Address must be 6 bytes for Ethernet device");
1074 return -EINVAL;
1075 }
1076 if (!is_unicast_ether_addr(hw_addr)) {
1077 NL_SET_ERR_MSG_MOD(extack, "Non-unicast hardware address unsupported");
1078 return -EINVAL;
1079 }
1080 }
1081
1082 ops = devlink->ops;
1083 if (!ops->port_function_hw_addr_set) {
1084 NL_SET_ERR_MSG_MOD(extack, "Port doesn't support function attributes");
1085 return -EOPNOTSUPP;
1086 }
1087
1230d948 1088 return ops->port_function_hw_addr_set(devlink, port, hw_addr, hw_addr_len, extack);
a1e8ae90 1089}
a1e8ae90 1090
a556dded
PP		 1091static int devlink_port_fn_state_set(struct devlink *devlink,
1092 struct devlink_port *port,
1093 const struct nlattr *attr,
1094 struct netlink_ext_ack *extack)
1095{
1096 enum devlink_port_fn_state state;
1097 const struct devlink_ops *ops;
1098
1099 state = nla_get_u8(attr);
1100 ops = devlink->ops;
1101 if (!ops->port_fn_state_set) {
1102 NL_SET_ERR_MSG_MOD(extack,
1103 "Function does not support state setting");
1104 return -EOPNOTSUPP;
1105 }
1106 return ops->port_fn_state_set(devlink, port, state, extack);
a1e8ae90
PP		 1107}
1108
1109static int
1110devlink_port_function_set(struct devlink *devlink, struct devlink_port *port,
1111 const struct nlattr *attr, struct netlink_ext_ack *extack)
1112{
1113 struct nlattr *tb[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1];
1114 int err;
1115
1116 err = nla_parse_nested(tb, DEVLINK_PORT_FUNCTION_ATTR_MAX, attr,
1117 devlink_function_nl_policy, extack);
1118 if (err < 0) {
1119 NL_SET_ERR_MSG_MOD(extack, "Fail to parse port function attributes");
1120 return err;
1121 }
1122
1123 attr = tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR];
a556dded 1124 if (attr) {
a1e8ae90 1125 err = devlink_port_function_hw_addr_set(devlink, port, attr, extack);
a556dded
PP		 1126 if (err)
1127 return err;
1128 }
1129 /* Keep this as the last function attribute set, so that when
1130 * multiple port function attributes are set along with state,
1131 * Those can be applied first before activating the state.
1132 */
1133 attr = tb[DEVLINK_PORT_FN_ATTR_STATE];
1134 if (attr)
1135 err = devlink_port_fn_state_set(devlink, port, attr, extack);
a1e8ae90 1136
1230d948
PP		 1137 if (!err)
1138 devlink_port_notify(port, DEVLINK_CMD_PORT_NEW);
a1e8ae90
PP		 1139 return err;
1140}
1141
bfcd3a46
JP		 1142static int devlink_nl_cmd_port_set_doit(struct sk_buff *skb,
1143 struct genl_info *info)
1144{
637989b5 1145 struct devlink_port *devlink_port = info->user_ptr[1];
1fc2257e 1146 struct devlink *devlink = devlink_port->devlink;
bfcd3a46
JP		 1147 int err;
1148
1149 if (info->attrs[DEVLINK_ATTR_PORT_TYPE]) {
1150 enum devlink_port_type port_type;
1151
1152 port_type = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_TYPE]);
1153 err = devlink_port_type_set(devlink, devlink_port, port_type);
1154 if (err)
1155 return err;
1156 }
a1e8ae90
PP		 1157
1158 if (info->attrs[DEVLINK_ATTR_PORT_FUNCTION]) {
1159 struct nlattr *attr = info->attrs[DEVLINK_ATTR_PORT_FUNCTION];
1160 struct netlink_ext_ack *extack = info->extack;
1161
1162 err = devlink_port_function_set(devlink, devlink_port, attr, extack);
1163 if (err)
1164 return err;
1165 }
1166
bfcd3a46
JP		 1167 return 0;
1168}
1169
ac0fc8a1
DA		 1170static int devlink_port_split(struct devlink *devlink, u32 port_index,
1171 u32 count, struct netlink_ext_ack *extack)
bfcd3a46
JP		 1172
1173{
be6fe1d8 1174 if (devlink->ops->port_split)
ac0fc8a1
DA		 1175 return devlink->ops->port_split(devlink, port_index, count,
1176 extack);
bfcd3a46
JP		 1177 return -EOPNOTSUPP;
1178}
1179
1180static int devlink_nl_cmd_port_split_doit(struct sk_buff *skb,
1181 struct genl_info *info)
1182{
1183 struct devlink *devlink = info->user_ptr[0];
82901ad1 1184 struct devlink_port *devlink_port;
bfcd3a46
JP		 1185 u32 port_index;
1186 u32 count;
1187
1188 if (!info->attrs[DEVLINK_ATTR_PORT_INDEX] ||
1189 !info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT])
1190 return -EINVAL;
1191
82901ad1 1192 devlink_port = devlink_port_get_from_info(devlink, info);
bfcd3a46
JP		 1193 port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
1194 count = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT]);
82901ad1
DR		 1195
1196 if (IS_ERR(devlink_port))
1197 return -EINVAL;
1198
1199 if (!devlink_port->attrs.splittable) {
1200 /* Split ports cannot be split. */
1201 if (devlink_port->attrs.split)
1202 NL_SET_ERR_MSG_MOD(info->extack, "Port cannot be split further");
1203 else
1204 NL_SET_ERR_MSG_MOD(info->extack, "Port cannot be split");
1205 return -EINVAL;
1206 }
1207
1208 if (count < 2 || !is_power_of_2(count) || count > devlink_port->attrs.lanes) {
1209 NL_SET_ERR_MSG_MOD(info->extack, "Invalid split count");
1210 return -EINVAL;
1211 }
1212
ac0fc8a1 1213 return devlink_port_split(devlink, port_index, count, info->extack);
bfcd3a46
JP		 1214}
1215
ac0fc8a1
DA		 1216static int devlink_port_unsplit(struct devlink *devlink, u32 port_index,
1217 struct netlink_ext_ack *extack)
bfcd3a46
JP		 1218
1219{
be6fe1d8 1220 if (devlink->ops->port_unsplit)
ac0fc8a1 1221 return devlink->ops->port_unsplit(devlink, port_index, extack);
bfcd3a46
JP		 1222 return -EOPNOTSUPP;
1223}
1224
1225static int devlink_nl_cmd_port_unsplit_doit(struct sk_buff *skb,
1226 struct genl_info *info)
1227{
1228 struct devlink *devlink = info->user_ptr[0];
1229 u32 port_index;
1230
1231 if (!info->attrs[DEVLINK_ATTR_PORT_INDEX])
1232 return -EINVAL;
1233
1234 port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
ac0fc8a1 1235 return devlink_port_unsplit(devlink, port_index, info->extack);
bfcd3a46
JP		 1236}
1237
cd76dcd6
PP		 1238static int devlink_port_new_notifiy(struct devlink *devlink,
1239 unsigned int port_index,
1240 struct genl_info *info)
1241{
1242 struct devlink_port *devlink_port;
1243 struct sk_buff *msg;
1244 int err;
1245
1246 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1247 if (!msg)
1248 return -ENOMEM;
1249
1250 mutex_lock(&devlink->lock);
1251 devlink_port = devlink_port_get_by_index(devlink, port_index);
1252 if (!devlink_port) {
1253 err = -ENODEV;
1254 goto out;
1255 }
1256
1257 err = devlink_nl_port_fill(msg, devlink, devlink_port,
1258 DEVLINK_CMD_NEW, info->snd_portid,
1259 info->snd_seq, 0, NULL);
1260 if (err)
1261 goto out;
1262
1263 err = genlmsg_reply(msg, info);
1264 mutex_unlock(&devlink->lock);
1265 return err;
1266
1267out:
1268 mutex_unlock(&devlink->lock);
1269 nlmsg_free(msg);
1270 return err;
1271}
1272
1273static int devlink_nl_cmd_port_new_doit(struct sk_buff *skb,
1274 struct genl_info *info)
1275{
1276 struct netlink_ext_ack *extack = info->extack;
1277 struct devlink_port_new_attrs new_attrs = {};
1278 struct devlink *devlink = info->user_ptr[0];
1279 unsigned int new_port_index;
1280 int err;
1281
1282 if (!devlink->ops->port_new || !devlink->ops->port_del)
1283 return -EOPNOTSUPP;
1284
1285 if (!info->attrs[DEVLINK_ATTR_PORT_FLAVOUR] ||
1286 !info->attrs[DEVLINK_ATTR_PORT_PCI_PF_NUMBER]) {
1287 NL_SET_ERR_MSG_MOD(extack, "Port flavour or PCI PF are not specified");
1288 return -EINVAL;
1289 }
1290 new_attrs.flavour = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_FLAVOUR]);
1291 new_attrs.pfnum =
1292 nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_PCI_PF_NUMBER]);
1293
1294 if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
1295 /* Port index of the new port being created by driver. */
1296 new_attrs.port_index =
1297 nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
1298 new_attrs.port_index_valid = true;
1299 }
1300 if (info->attrs[DEVLINK_ATTR_PORT_CONTROLLER_NUMBER]) {
1301 new_attrs.controller =
1302 nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_CONTROLLER_NUMBER]);
1303 new_attrs.controller_valid = true;
1304 }
1305 if (new_attrs.flavour == DEVLINK_PORT_FLAVOUR_PCI_SF &&
1306 info->attrs[DEVLINK_ATTR_PORT_PCI_SF_NUMBER]) {
1307 new_attrs.sfnum = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_PCI_SF_NUMBER]);
1308 new_attrs.sfnum_valid = true;
1309 }
1310
1311 err = devlink->ops->port_new(devlink, &new_attrs, extack,
1312 &new_port_index);
1313 if (err)
1314 return err;
1315
1316 err = devlink_port_new_notifiy(devlink, new_port_index, info);
1317 if (err && err != -ENODEV) {
1318 /* Fail to send the response; destroy newly created port. */
1319 devlink->ops->port_del(devlink, new_port_index, extack);
1320 }
1321 return err;
1322}
1323
1324static int devlink_nl_cmd_port_del_doit(struct sk_buff *skb,
1325 struct genl_info *info)
1326{
1327 struct netlink_ext_ack *extack = info->extack;
1328 struct devlink *devlink = info->user_ptr[0];
1329 unsigned int port_index;
1330
1331 if (!devlink->ops->port_del)
1332 return -EOPNOTSUPP;
1333
1334 if (!info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
1335 NL_SET_ERR_MSG_MOD(extack, "Port index is not specified");
1336 return -EINVAL;
1337 }
1338 port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
1339
1340 return devlink->ops->port_del(devlink, port_index, extack);
1341}
1342
bf797471
JP		 1343static int devlink_nl_sb_fill(struct sk_buff *msg, struct devlink *devlink,
1344 struct devlink_sb *devlink_sb,
1345 enum devlink_command cmd, u32 portid,
1346 u32 seq, int flags)
1347{
1348 void *hdr;
1349
1350 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1351 if (!hdr)
1352 return -EMSGSIZE;
1353
1354 if (devlink_nl_put_handle(msg, devlink))
1355 goto nla_put_failure;
1356 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
1357 goto nla_put_failure;
1358 if (nla_put_u32(msg, DEVLINK_ATTR_SB_SIZE, devlink_sb->size))
1359 goto nla_put_failure;
1360 if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_POOL_COUNT,
1361 devlink_sb->ingress_pools_count))
1362 goto nla_put_failure;
1363 if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_POOL_COUNT,
1364 devlink_sb->egress_pools_count))
1365 goto nla_put_failure;
1366 if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_TC_COUNT,
1367 devlink_sb->ingress_tc_count))
1368 goto nla_put_failure;
1369 if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_TC_COUNT,
1370 devlink_sb->egress_tc_count))
1371 goto nla_put_failure;
1372
1373 genlmsg_end(msg, hdr);
1374 return 0;
1375
1376nla_put_failure:
1377 genlmsg_cancel(msg, hdr);
1378 return -EMSGSIZE;
1379}
1380
1381static int devlink_nl_cmd_sb_get_doit(struct sk_buff *skb,
1382 struct genl_info *info)
1383{
1384 struct devlink *devlink = info->user_ptr[0];
637989b5 1385 struct devlink_sb *devlink_sb;
bf797471
JP		 1386 struct sk_buff *msg;
1387 int err;
1388
637989b5
PP		 1389 devlink_sb = devlink_sb_get_from_info(devlink, info);
1390 if (IS_ERR(devlink_sb))
1391 return PTR_ERR(devlink_sb);
1392
bf797471
JP		 1393 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1394 if (!msg)
1395 return -ENOMEM;
1396
1397 err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
1398 DEVLINK_CMD_SB_NEW,
1399 info->snd_portid, info->snd_seq, 0);
1400 if (err) {
1401 nlmsg_free(msg);
1402 return err;
1403 }
1404
1405 return genlmsg_reply(msg, info);
1406}
1407
1408static int devlink_nl_cmd_sb_get_dumpit(struct sk_buff *msg,
1409 struct netlink_callback *cb)
1410{
1411 struct devlink *devlink;
1412 struct devlink_sb *devlink_sb;
1413 int start = cb->args[0];
1414 int idx = 0;
1415 int err;
1416
1417 mutex_lock(&devlink_mutex);
1418 list_for_each_entry(devlink, &devlink_list, list) {
1419 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
1420 continue;
2406e7e5 1421 mutex_lock(&devlink->lock);
bf797471
JP		 1422 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
1423 if (idx < start) {
1424 idx++;
1425 continue;
1426 }
1427 err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
1428 DEVLINK_CMD_SB_NEW,
1429 NETLINK_CB(cb->skb).portid,
1430 cb->nlh->nlmsg_seq,
1431 NLM_F_MULTI);
2406e7e5
AS		 1432 if (err) {
1433 mutex_unlock(&devlink->lock);
bf797471 1434 goto out;
2406e7e5 1435 }
bf797471
JP		 1436 idx++;
1437 }
2406e7e5 1438 mutex_unlock(&devlink->lock);
bf797471
JP		 1439 }
1440out:
1441 mutex_unlock(&devlink_mutex);
1442
1443 cb->args[0] = idx;
1444 return msg->len;
1445}
1446
1447static int devlink_nl_sb_pool_fill(struct sk_buff *msg, struct devlink *devlink,
1448 struct devlink_sb *devlink_sb,
1449 u16 pool_index, enum devlink_command cmd,
1450 u32 portid, u32 seq, int flags)
1451{
1452 struct devlink_sb_pool_info pool_info;
1453 void *hdr;
1454 int err;
1455
1456 err = devlink->ops->sb_pool_get(devlink, devlink_sb->index,
1457 pool_index, &pool_info);
1458 if (err)
1459 return err;
1460
1461 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1462 if (!hdr)
1463 return -EMSGSIZE;
1464
1465 if (devlink_nl_put_handle(msg, devlink))
1466 goto nla_put_failure;
1467 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
1468 goto nla_put_failure;
1469 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
1470 goto nla_put_failure;
1471 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_info.pool_type))
1472 goto nla_put_failure;
1473 if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_SIZE, pool_info.size))
1474 goto nla_put_failure;
1475 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE,
1476 pool_info.threshold_type))
1477 goto nla_put_failure;
bff5731d
JK		 1478 if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_CELL_SIZE,
1479 pool_info.cell_size))
1480 goto nla_put_failure;
bf797471
JP		 1481
1482 genlmsg_end(msg, hdr);
1483 return 0;
1484
1485nla_put_failure:
1486 genlmsg_cancel(msg, hdr);
1487 return -EMSGSIZE;
1488}
1489
1490static int devlink_nl_cmd_sb_pool_get_doit(struct sk_buff *skb,
1491 struct genl_info *info)
1492{
1493 struct devlink *devlink = info->user_ptr[0];
637989b5 1494 struct devlink_sb *devlink_sb;
bf797471
JP		 1495 struct sk_buff *msg;
1496 u16 pool_index;
1497 int err;
1498
637989b5
PP		 1499 devlink_sb = devlink_sb_get_from_info(devlink, info);
1500 if (IS_ERR(devlink_sb))
1501 return PTR_ERR(devlink_sb);
1502
bf797471
JP		 1503 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1504 &pool_index);
1505 if (err)
1506 return err;
1507
be6fe1d8 1508 if (!devlink->ops->sb_pool_get)
bf797471
JP		 1509 return -EOPNOTSUPP;
1510
1511 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1512 if (!msg)
1513 return -ENOMEM;
1514
1515 err = devlink_nl_sb_pool_fill(msg, devlink, devlink_sb, pool_index,
1516 DEVLINK_CMD_SB_POOL_NEW,
1517 info->snd_portid, info->snd_seq, 0);
1518 if (err) {
1519 nlmsg_free(msg);
1520 return err;
1521 }
1522
1523 return genlmsg_reply(msg, info);
1524}
1525
1526static int __sb_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
1527 struct devlink *devlink,
1528 struct devlink_sb *devlink_sb,
1529 u32 portid, u32 seq)
1530{
1531 u16 pool_count = devlink_sb_pool_count(devlink_sb);
1532 u16 pool_index;
1533 int err;
1534
1535 for (pool_index = 0; pool_index < pool_count; pool_index++) {
1536 if (*p_idx < start) {
1537 (*p_idx)++;
1538 continue;
1539 }
1540 err = devlink_nl_sb_pool_fill(msg, devlink,
1541 devlink_sb,
1542 pool_index,
1543 DEVLINK_CMD_SB_POOL_NEW,
1544 portid, seq, NLM_F_MULTI);
1545 if (err)
1546 return err;
1547 (*p_idx)++;
1548 }
1549 return 0;
1550}
1551
1552static int devlink_nl_cmd_sb_pool_get_dumpit(struct sk_buff *msg,
1553 struct netlink_callback *cb)
1554{
1555 struct devlink *devlink;
1556 struct devlink_sb *devlink_sb;
1557 int start = cb->args[0];
1558 int idx = 0;
c62c2cfb 1559 int err = 0;
bf797471
JP		 1560
1561 mutex_lock(&devlink_mutex);
1562 list_for_each_entry(devlink, &devlink_list, list) {
1563 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
be6fe1d8 1564 !devlink->ops->sb_pool_get)
bf797471 1565 continue;
2406e7e5 1566 mutex_lock(&devlink->lock);
bf797471
JP		 1567 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
1568 err = __sb_pool_get_dumpit(msg, start, &idx, devlink,
1569 devlink_sb,
1570 NETLINK_CB(cb->skb).portid,
1571 cb->nlh->nlmsg_seq);
82274d07
JK		 1572 if (err == -EOPNOTSUPP) {
1573 err = 0;
1574 } else if (err) {
2406e7e5 1575 mutex_unlock(&devlink->lock);
bf797471 1576 goto out;
2406e7e5 1577 }
bf797471 1578 }
2406e7e5 1579 mutex_unlock(&devlink->lock);
bf797471
JP		 1580 }
1581out:
1582 mutex_unlock(&devlink_mutex);
1583
c62c2cfb
JP		 1584 if (err != -EMSGSIZE)
1585 return err;
1586
bf797471
JP		 1587 cb->args[0] = idx;
1588 return msg->len;
1589}
1590
1591static int devlink_sb_pool_set(struct devlink *devlink, unsigned int sb_index,
1592 u16 pool_index, u32 size,
f2ad1a52
IS		 1593 enum devlink_sb_threshold_type threshold_type,
1594 struct netlink_ext_ack *extack)
bf797471
JP		 1595
1596{
1597 const struct devlink_ops *ops = devlink->ops;
1598
be6fe1d8 1599 if (ops->sb_pool_set)
bf797471 1600 return ops->sb_pool_set(devlink, sb_index, pool_index,
f2ad1a52 1601 size, threshold_type, extack);
bf797471
JP		 1602 return -EOPNOTSUPP;
1603}
1604
1605static int devlink_nl_cmd_sb_pool_set_doit(struct sk_buff *skb,
1606 struct genl_info *info)
1607{
1608 struct devlink *devlink = info->user_ptr[0];
bf797471 1609 enum devlink_sb_threshold_type threshold_type;
637989b5 1610 struct devlink_sb *devlink_sb;
bf797471
JP		 1611 u16 pool_index;
1612 u32 size;
1613 int err;
1614
637989b5
PP		 1615 devlink_sb = devlink_sb_get_from_info(devlink, info);
1616 if (IS_ERR(devlink_sb))
1617 return PTR_ERR(devlink_sb);
1618
bf797471
JP		 1619 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1620 &pool_index);
1621 if (err)
1622 return err;
1623
1624 err = devlink_sb_th_type_get_from_info(info, &threshold_type);
1625 if (err)
1626 return err;
1627
1628 if (!info->attrs[DEVLINK_ATTR_SB_POOL_SIZE])
1629 return -EINVAL;
1630
1631 size = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_POOL_SIZE]);
1632 return devlink_sb_pool_set(devlink, devlink_sb->index,
f2ad1a52
IS		 1633 pool_index, size, threshold_type,
1634 info->extack);
bf797471
JP		 1635}
1636
1637static int devlink_nl_sb_port_pool_fill(struct sk_buff *msg,
1638 struct devlink *devlink,
1639 struct devlink_port *devlink_port,
1640 struct devlink_sb *devlink_sb,
1641 u16 pool_index,
1642 enum devlink_command cmd,
1643 u32 portid, u32 seq, int flags)
1644{
df38dafd 1645 const struct devlink_ops *ops = devlink->ops;
bf797471
JP		 1646 u32 threshold;
1647 void *hdr;
1648 int err;
1649
df38dafd
JP		 1650 err = ops->sb_port_pool_get(devlink_port, devlink_sb->index,
1651 pool_index, &threshold);
bf797471
JP		 1652 if (err)
1653 return err;
1654
1655 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1656 if (!hdr)
1657 return -EMSGSIZE;
1658
1659 if (devlink_nl_put_handle(msg, devlink))
1660 goto nla_put_failure;
1661 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
1662 goto nla_put_failure;
1663 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
1664 goto nla_put_failure;
1665 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
1666 goto nla_put_failure;
1667 if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
1668 goto nla_put_failure;
1669
df38dafd
JP		 1670 if (ops->sb_occ_port_pool_get) {
1671 u32 cur;
1672 u32 max;
1673
1674 err = ops->sb_occ_port_pool_get(devlink_port, devlink_sb->index,
1675 pool_index, &cur, &max);
1676 if (err && err != -EOPNOTSUPP)
849920c7 1677 goto sb_occ_get_failure;
df38dafd
JP		 1678 if (!err) {
1679 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
1680 goto nla_put_failure;
1681 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
1682 goto nla_put_failure;
1683 }
1684 }
1685
bf797471
JP		 1686 genlmsg_end(msg, hdr);
1687 return 0;
1688
1689nla_put_failure:
849920c7
WH		 1690 err = -EMSGSIZE;
1691sb_occ_get_failure:
bf797471 1692 genlmsg_cancel(msg, hdr);
849920c7 1693 return err;
bf797471
JP		 1694}
1695
1696static int devlink_nl_cmd_sb_port_pool_get_doit(struct sk_buff *skb,
1697 struct genl_info *info)
1698{
637989b5 1699 struct devlink_port *devlink_port = info->user_ptr[1];
bf797471 1700 struct devlink *devlink = devlink_port->devlink;
637989b5 1701 struct devlink_sb *devlink_sb;
bf797471
JP		 1702 struct sk_buff *msg;
1703 u16 pool_index;
1704 int err;
1705
637989b5
PP		 1706 devlink_sb = devlink_sb_get_from_info(devlink, info);
1707 if (IS_ERR(devlink_sb))
1708 return PTR_ERR(devlink_sb);
1709
bf797471
JP		 1710 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1711 &pool_index);
1712 if (err)
1713 return err;
1714
be6fe1d8 1715 if (!devlink->ops->sb_port_pool_get)
bf797471
JP		 1716 return -EOPNOTSUPP;
1717
1718 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1719 if (!msg)
1720 return -ENOMEM;
1721
1722 err = devlink_nl_sb_port_pool_fill(msg, devlink, devlink_port,
1723 devlink_sb, pool_index,
1724 DEVLINK_CMD_SB_PORT_POOL_NEW,
1725 info->snd_portid, info->snd_seq, 0);
1726 if (err) {
1727 nlmsg_free(msg);
1728 return err;
1729 }
1730
1731 return genlmsg_reply(msg, info);
1732}
1733
1734static int __sb_port_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
1735 struct devlink *devlink,
1736 struct devlink_sb *devlink_sb,
1737 u32 portid, u32 seq)
1738{
1739 struct devlink_port *devlink_port;
1740 u16 pool_count = devlink_sb_pool_count(devlink_sb);
1741 u16 pool_index;
1742 int err;
1743
1744 list_for_each_entry(devlink_port, &devlink->port_list, list) {
1745 for (pool_index = 0; pool_index < pool_count; pool_index++) {
1746 if (*p_idx < start) {
1747 (*p_idx)++;
1748 continue;
1749 }
1750 err = devlink_nl_sb_port_pool_fill(msg, devlink,
1751 devlink_port,
1752 devlink_sb,
1753 pool_index,
1754 DEVLINK_CMD_SB_PORT_POOL_NEW,
1755 portid, seq,
1756 NLM_F_MULTI);
1757 if (err)
1758 return err;
1759 (*p_idx)++;
1760 }
1761 }
1762 return 0;
1763}
1764
1765static int devlink_nl_cmd_sb_port_pool_get_dumpit(struct sk_buff *msg,
1766 struct netlink_callback *cb)
1767{
1768 struct devlink *devlink;
1769 struct devlink_sb *devlink_sb;
1770 int start = cb->args[0];
1771 int idx = 0;
c62c2cfb 1772 int err = 0;
bf797471
JP		 1773
1774 mutex_lock(&devlink_mutex);
bf797471
JP		 1775 list_for_each_entry(devlink, &devlink_list, list) {
1776 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
be6fe1d8 1777 !devlink->ops->sb_port_pool_get)
bf797471 1778 continue;
2406e7e5 1779 mutex_lock(&devlink->lock);
bf797471
JP		 1780 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
1781 err = __sb_port_pool_get_dumpit(msg, start, &idx,
1782 devlink, devlink_sb,
1783 NETLINK_CB(cb->skb).portid,
1784 cb->nlh->nlmsg_seq);
82274d07
JK		 1785 if (err == -EOPNOTSUPP) {
1786 err = 0;
1787 } else if (err) {
2406e7e5 1788 mutex_unlock(&devlink->lock);
bf797471 1789 goto out;
2406e7e5 1790 }
bf797471 1791 }
2406e7e5 1792 mutex_unlock(&devlink->lock);
bf797471
JP		 1793 }
1794out:
bf797471
JP		 1795 mutex_unlock(&devlink_mutex);
1796
c62c2cfb
JP		 1797 if (err != -EMSGSIZE)
1798 return err;
1799
bf797471
JP		 1800 cb->args[0] = idx;
1801 return msg->len;
1802}
1803
1804static int devlink_sb_port_pool_set(struct devlink_port *devlink_port,
1805 unsigned int sb_index, u16 pool_index,
f2ad1a52
IS		 1806 u32 threshold,
1807 struct netlink_ext_ack *extack)
bf797471
JP		 1808
1809{
1810 const struct devlink_ops *ops = devlink_port->devlink->ops;
1811
be6fe1d8 1812 if (ops->sb_port_pool_set)
bf797471 1813 return ops->sb_port_pool_set(devlink_port, sb_index,
f2ad1a52 1814 pool_index, threshold, extack);
bf797471
JP		 1815 return -EOPNOTSUPP;
1816}
1817
1818static int devlink_nl_cmd_sb_port_pool_set_doit(struct sk_buff *skb,
1819 struct genl_info *info)
1820{
637989b5
PP		 1821 struct devlink_port *devlink_port = info->user_ptr[1];
1822 struct devlink *devlink = info->user_ptr[0];
1823 struct devlink_sb *devlink_sb;
bf797471
JP		 1824 u16 pool_index;
1825 u32 threshold;
1826 int err;
1827
637989b5
PP		 1828 devlink_sb = devlink_sb_get_from_info(devlink, info);
1829 if (IS_ERR(devlink_sb))
1830 return PTR_ERR(devlink_sb);
1831
bf797471
JP		 1832 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1833 &pool_index);
1834 if (err)
1835 return err;
1836
1837 if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD])
1838 return -EINVAL;
1839
1840 threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
1841 return devlink_sb_port_pool_set(devlink_port, devlink_sb->index,
f2ad1a52 1842 pool_index, threshold, info->extack);
bf797471
JP		 1843}
1844
1845static int
1846devlink_nl_sb_tc_pool_bind_fill(struct sk_buff *msg, struct devlink *devlink,
1847 struct devlink_port *devlink_port,
1848 struct devlink_sb *devlink_sb, u16 tc_index,
1849 enum devlink_sb_pool_type pool_type,
1850 enum devlink_command cmd,
1851 u32 portid, u32 seq, int flags)
1852{
df38dafd 1853 const struct devlink_ops *ops = devlink->ops;
bf797471
JP		 1854 u16 pool_index;
1855 u32 threshold;
1856 void *hdr;
1857 int err;
1858
df38dafd
JP		 1859 err = ops->sb_tc_pool_bind_get(devlink_port, devlink_sb->index,
1860 tc_index, pool_type,
1861 &pool_index, &threshold);
bf797471
JP		 1862 if (err)
1863 return err;
1864
1865 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1866 if (!hdr)
1867 return -EMSGSIZE;
1868
1869 if (devlink_nl_put_handle(msg, devlink))
1870 goto nla_put_failure;
1871 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
1872 goto nla_put_failure;
1873 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
1874 goto nla_put_failure;
1875 if (nla_put_u16(msg, DEVLINK_ATTR_SB_TC_INDEX, tc_index))
1876 goto nla_put_failure;
1877 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_type))
1878 goto nla_put_failure;
1879 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
1880 goto nla_put_failure;
1881 if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
1882 goto nla_put_failure;
1883
df38dafd
JP		 1884 if (ops->sb_occ_tc_port_bind_get) {
1885 u32 cur;
1886 u32 max;
1887
1888 err = ops->sb_occ_tc_port_bind_get(devlink_port,
1889 devlink_sb->index,
1890 tc_index, pool_type,
1891 &cur, &max);
1892 if (err && err != -EOPNOTSUPP)
1893 return err;
1894 if (!err) {
1895 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
1896 goto nla_put_failure;
1897 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
1898 goto nla_put_failure;
1899 }
1900 }
1901
bf797471
JP		 1902 genlmsg_end(msg, hdr);
1903 return 0;
1904
1905nla_put_failure:
1906 genlmsg_cancel(msg, hdr);
1907 return -EMSGSIZE;
1908}
1909
1910static int devlink_nl_cmd_sb_tc_pool_bind_get_doit(struct sk_buff *skb,
1911 struct genl_info *info)
1912{
637989b5 1913 struct devlink_port *devlink_port = info->user_ptr[1];
bf797471 1914 struct devlink *devlink = devlink_port->devlink;
637989b5 1915 struct devlink_sb *devlink_sb;
bf797471
JP		 1916 struct sk_buff *msg;
1917 enum devlink_sb_pool_type pool_type;
1918 u16 tc_index;
1919 int err;
1920
637989b5
PP		 1921 devlink_sb = devlink_sb_get_from_info(devlink, info);
1922 if (IS_ERR(devlink_sb))
1923 return PTR_ERR(devlink_sb);
1924
bf797471
JP		 1925 err = devlink_sb_pool_type_get_from_info(info, &pool_type);
1926 if (err)
1927 return err;
1928
1929 err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
1930 pool_type, &tc_index);
1931 if (err)
1932 return err;
1933
be6fe1d8 1934 if (!devlink->ops->sb_tc_pool_bind_get)
bf797471
JP		 1935 return -EOPNOTSUPP;
1936
1937 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1938 if (!msg)
1939 return -ENOMEM;
1940
1941 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink, devlink_port,
1942 devlink_sb, tc_index, pool_type,
1943 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
1944 info->snd_portid,
1945 info->snd_seq, 0);
1946 if (err) {
1947 nlmsg_free(msg);
1948 return err;
1949 }
1950
1951 return genlmsg_reply(msg, info);
1952}
1953
1954static int __sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
1955 int start, int *p_idx,
1956 struct devlink *devlink,
1957 struct devlink_sb *devlink_sb,
1958 u32 portid, u32 seq)
1959{
1960 struct devlink_port *devlink_port;
1961 u16 tc_index;
1962 int err;
1963
1964 list_for_each_entry(devlink_port, &devlink->port_list, list) {
1965 for (tc_index = 0;
1966 tc_index < devlink_sb->ingress_tc_count; tc_index++) {
1967 if (*p_idx < start) {
1968 (*p_idx)++;
1969 continue;
1970 }
1971 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
1972 devlink_port,
1973 devlink_sb,
1974 tc_index,
1975 DEVLINK_SB_POOL_TYPE_INGRESS,
1976 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
1977 portid, seq,
1978 NLM_F_MULTI);
1979 if (err)
1980 return err;
1981 (*p_idx)++;
1982 }
1983 for (tc_index = 0;
1984 tc_index < devlink_sb->egress_tc_count; tc_index++) {
1985 if (*p_idx < start) {
1986 (*p_idx)++;
1987 continue;
1988 }
1989 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
1990 devlink_port,
1991 devlink_sb,
1992 tc_index,
1993 DEVLINK_SB_POOL_TYPE_EGRESS,
1994 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
1995 portid, seq,
1996 NLM_F_MULTI);
1997 if (err)
1998 return err;
1999 (*p_idx)++;
2000 }
2001 }
2002 return 0;
2003}
2004
2005static int
2006devlink_nl_cmd_sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
2007 struct netlink_callback *cb)
2008{
2009 struct devlink *devlink;
2010 struct devlink_sb *devlink_sb;
2011 int start = cb->args[0];
2012 int idx = 0;
c62c2cfb 2013 int err = 0;
bf797471
JP		 2014
2015 mutex_lock(&devlink_mutex);
bf797471
JP		 2016 list_for_each_entry(devlink, &devlink_list, list) {
2017 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
be6fe1d8 2018 !devlink->ops->sb_tc_pool_bind_get)
bf797471 2019 continue;
2406e7e5
AS		 2020
2021 mutex_lock(&devlink->lock);
bf797471
JP		 2022 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
2023 err = __sb_tc_pool_bind_get_dumpit(msg, start, &idx,
2024 devlink,
2025 devlink_sb,
2026 NETLINK_CB(cb->skb).portid,
2027 cb->nlh->nlmsg_seq);
82274d07
JK		 2028 if (err == -EOPNOTSUPP) {
2029 err = 0;
2030 } else if (err) {
2406e7e5 2031 mutex_unlock(&devlink->lock);
bf797471 2032 goto out;
2406e7e5 2033 }
bf797471 2034 }
2406e7e5 2035 mutex_unlock(&devlink->lock);
bf797471
JP		 2036 }
2037out:
bf797471
JP		 2038 mutex_unlock(&devlink_mutex);
2039
c62c2cfb
JP		 2040 if (err != -EMSGSIZE)
2041 return err;
2042
bf797471
JP		 2043 cb->args[0] = idx;
2044 return msg->len;
2045}
2046
2047static int devlink_sb_tc_pool_bind_set(struct devlink_port *devlink_port,
2048 unsigned int sb_index, u16 tc_index,
2049 enum devlink_sb_pool_type pool_type,
f2ad1a52
IS		 2050 u16 pool_index, u32 threshold,
2051 struct netlink_ext_ack *extack)
bf797471
JP		 2052
2053{
2054 const struct devlink_ops *ops = devlink_port->devlink->ops;
2055
be6fe1d8 2056 if (ops->sb_tc_pool_bind_set)
bf797471
JP		 2057 return ops->sb_tc_pool_bind_set(devlink_port, sb_index,
2058 tc_index, pool_type,
f2ad1a52 2059 pool_index, threshold, extack);
bf797471
JP		 2060 return -EOPNOTSUPP;
2061}
2062
2063static int devlink_nl_cmd_sb_tc_pool_bind_set_doit(struct sk_buff *skb,
2064 struct genl_info *info)
2065{
637989b5
PP		 2066 struct devlink_port *devlink_port = info->user_ptr[1];
2067 struct devlink *devlink = info->user_ptr[0];
bf797471 2068 enum devlink_sb_pool_type pool_type;
637989b5 2069 struct devlink_sb *devlink_sb;
bf797471
JP		 2070 u16 tc_index;
2071 u16 pool_index;
2072 u32 threshold;
2073 int err;
2074
637989b5
PP		 2075 devlink_sb = devlink_sb_get_from_info(devlink, info);
2076 if (IS_ERR(devlink_sb))
2077 return PTR_ERR(devlink_sb);
2078
bf797471
JP		 2079 err = devlink_sb_pool_type_get_from_info(info, &pool_type);
2080 if (err)
2081 return err;
2082
2083 err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
2084 pool_type, &tc_index);
2085 if (err)
2086 return err;
2087
2088 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
2089 &pool_index);
2090 if (err)
2091 return err;
2092
2093 if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD])
2094 return -EINVAL;
2095
2096 threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
2097 return devlink_sb_tc_pool_bind_set(devlink_port, devlink_sb->index,
2098 tc_index, pool_type,
f2ad1a52 2099 pool_index, threshold, info->extack);
bf797471
JP		 2100}
2101
df38dafd
JP		 2102static int devlink_nl_cmd_sb_occ_snapshot_doit(struct sk_buff *skb,
2103 struct genl_info *info)
2104{
2105 struct devlink *devlink = info->user_ptr[0];
df38dafd 2106 const struct devlink_ops *ops = devlink->ops;
637989b5
PP		 2107 struct devlink_sb *devlink_sb;
2108
2109 devlink_sb = devlink_sb_get_from_info(devlink, info);
2110 if (IS_ERR(devlink_sb))
2111 return PTR_ERR(devlink_sb);
df38dafd 2112
be6fe1d8 2113 if (ops->sb_occ_snapshot)
df38dafd
JP		 2114 return ops->sb_occ_snapshot(devlink, devlink_sb->index);
2115 return -EOPNOTSUPP;
2116}
2117
2118static int devlink_nl_cmd_sb_occ_max_clear_doit(struct sk_buff *skb,
2119 struct genl_info *info)
2120{
2121 struct devlink *devlink = info->user_ptr[0];
df38dafd 2122 const struct devlink_ops *ops = devlink->ops;
637989b5
PP		 2123 struct devlink_sb *devlink_sb;
2124
2125 devlink_sb = devlink_sb_get_from_info(devlink, info);
2126 if (IS_ERR(devlink_sb))
2127 return PTR_ERR(devlink_sb);
df38dafd 2128
be6fe1d8 2129 if (ops->sb_occ_max_clear)
df38dafd
JP		 2130 return ops->sb_occ_max_clear(devlink, devlink_sb->index);
2131 return -EOPNOTSUPP;
2132}
2133
21e3d2dd
JP		 2134static int devlink_nl_eswitch_fill(struct sk_buff *msg, struct devlink *devlink,
2135 enum devlink_command cmd, u32 portid,
2136 u32 seq, int flags)
08f4b591 2137{
59bfde01 2138 const struct devlink_ops *ops = devlink->ops;
98fdbea5
LR		 2139 enum devlink_eswitch_encap_mode encap_mode;
2140 u8 inline_mode;
08f4b591 2141 void *hdr;
59bfde01
RD		 2142 int err = 0;
2143 u16 mode;
08f4b591
OG		 2144
2145 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
2146 if (!hdr)
2147 return -EMSGSIZE;
2148
59bfde01
RD		 2149 err = devlink_nl_put_handle(msg, devlink);
2150 if (err)
1a6aa36b 2151 goto nla_put_failure;
08f4b591 2152
4456f61c
JP		 2153 if (ops->eswitch_mode_get) {
2154 err = ops->eswitch_mode_get(devlink, &mode);
2155 if (err)
2156 goto nla_put_failure;
2157 err = nla_put_u16(msg, DEVLINK_ATTR_ESWITCH_MODE, mode);
2158 if (err)
2159 goto nla_put_failure;
2160 }
59bfde01
RD		 2161
2162 if (ops->eswitch_inline_mode_get) {
2163 err = ops->eswitch_inline_mode_get(devlink, &inline_mode);
2164 if (err)
1a6aa36b 2165 goto nla_put_failure;
59bfde01
RD		 2166 err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_INLINE_MODE,
2167 inline_mode);
2168 if (err)
1a6aa36b 2169 goto nla_put_failure;
59bfde01 2170 }
08f4b591 2171
f43e9b06
RD		 2172 if (ops->eswitch_encap_mode_get) {
2173 err = ops->eswitch_encap_mode_get(devlink, &encap_mode);
2174 if (err)
2175 goto nla_put_failure;
2176 err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_ENCAP_MODE, encap_mode);
2177 if (err)
2178 goto nla_put_failure;
2179 }
2180
08f4b591
OG		 2181 genlmsg_end(msg, hdr);
2182 return 0;
2183
1a6aa36b 2184nla_put_failure:
08f4b591 2185 genlmsg_cancel(msg, hdr);
59bfde01 2186 return err;
08f4b591
OG		 2187}
2188
adf200f3
JP		 2189static int devlink_nl_cmd_eswitch_get_doit(struct sk_buff *skb,
2190 struct genl_info *info)
08f4b591
OG		 2191{
2192 struct devlink *devlink = info->user_ptr[0];
08f4b591 2193 struct sk_buff *msg;
08f4b591
OG		 2194 int err;
2195
08f4b591
OG		 2196 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2197 if (!msg)
2198 return -ENOMEM;
2199
21e3d2dd
JP		 2200 err = devlink_nl_eswitch_fill(msg, devlink, DEVLINK_CMD_ESWITCH_GET,
2201 info->snd_portid, info->snd_seq, 0);
08f4b591
OG		 2202
2203 if (err) {
2204 nlmsg_free(msg);
2205 return err;
2206 }
2207
2208 return genlmsg_reply(msg, info);
2209}
2210
adf200f3
JP		 2211static int devlink_nl_cmd_eswitch_set_doit(struct sk_buff *skb,
2212 struct genl_info *info)
08f4b591
OG		 2213{
2214 struct devlink *devlink = info->user_ptr[0];
2215 const struct devlink_ops *ops = devlink->ops;
98fdbea5
LR		 2216 enum devlink_eswitch_encap_mode encap_mode;
2217 u8 inline_mode;
59bfde01 2218 int err = 0;
f43e9b06 2219 u16 mode;
08f4b591 2220
59bfde01
RD		 2221 if (info->attrs[DEVLINK_ATTR_ESWITCH_MODE]) {
2222 if (!ops->eswitch_mode_set)
2223 return -EOPNOTSUPP;
2224 mode = nla_get_u16(info->attrs[DEVLINK_ATTR_ESWITCH_MODE]);
db7ff19e 2225 err = ops->eswitch_mode_set(devlink, mode, info->extack);
59bfde01
RD		 2226 if (err)
2227 return err;
2228 }
08f4b591 2229
59bfde01
RD		 2230 if (info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]) {
2231 if (!ops->eswitch_inline_mode_set)
2232 return -EOPNOTSUPP;
2233 inline_mode = nla_get_u8(
2234 info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]);
db7ff19e
EB		 2235 err = ops->eswitch_inline_mode_set(devlink, inline_mode,
2236 info->extack);
59bfde01
RD		 2237 if (err)
2238 return err;
2239 }
f43e9b06
RD		 2240
2241 if (info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]) {
2242 if (!ops->eswitch_encap_mode_set)
2243 return -EOPNOTSUPP;
2244 encap_mode = nla_get_u8(info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]);
db7ff19e
EB		 2245 err = ops->eswitch_encap_mode_set(devlink, encap_mode,
2246 info->extack);
f43e9b06
RD		 2247 if (err)
2248 return err;
2249 }
2250
1555d204
AS		 2251 return 0;
2252}
2253
2254int devlink_dpipe_match_put(struct sk_buff *skb,
2255 struct devlink_dpipe_match *match)
2256{
2257 struct devlink_dpipe_header *header = match->header;
2258 struct devlink_dpipe_field *field = &header->fields[match->field_id];
2259 struct nlattr *match_attr;
2260
ae0be8de 2261 match_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_MATCH);
1555d204
AS		 2262 if (!match_attr)
2263 return -EMSGSIZE;
2264
2265 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_MATCH_TYPE, match->type) ||
2266 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, match->header_index) ||
2267 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
2268 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
2269 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
2270 goto nla_put_failure;
2271
2272 nla_nest_end(skb, match_attr);
2273 return 0;
2274
2275nla_put_failure:
2276 nla_nest_cancel(skb, match_attr);
2277 return -EMSGSIZE;
2278}
2279EXPORT_SYMBOL_GPL(devlink_dpipe_match_put);
2280
2281static int devlink_dpipe_matches_put(struct devlink_dpipe_table *table,
2282 struct sk_buff *skb)
2283{
2284 struct nlattr *matches_attr;
2285
ae0be8de
MK		 2286 matches_attr = nla_nest_start_noflag(skb,
2287 DEVLINK_ATTR_DPIPE_TABLE_MATCHES);
1555d204
AS		 2288 if (!matches_attr)
2289 return -EMSGSIZE;
2290
2291 if (table->table_ops->matches_dump(table->priv, skb))
2292 goto nla_put_failure;
2293
2294 nla_nest_end(skb, matches_attr);
2295 return 0;
2296
2297nla_put_failure:
2298 nla_nest_cancel(skb, matches_attr);
2299 return -EMSGSIZE;
2300}
2301
2302int devlink_dpipe_action_put(struct sk_buff *skb,
2303 struct devlink_dpipe_action *action)
2304{
2305 struct devlink_dpipe_header *header = action->header;
2306 struct devlink_dpipe_field *field = &header->fields[action->field_id];
2307 struct nlattr *action_attr;
2308
ae0be8de 2309 action_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ACTION);
1555d204
AS		 2310 if (!action_attr)
2311 return -EMSGSIZE;
2312
2313 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_ACTION_TYPE, action->type) ||
2314 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, action->header_index) ||
2315 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
2316 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
2317 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
2318 goto nla_put_failure;
2319
2320 nla_nest_end(skb, action_attr);
2321 return 0;
2322
2323nla_put_failure:
2324 nla_nest_cancel(skb, action_attr);
2325 return -EMSGSIZE;
2326}
2327EXPORT_SYMBOL_GPL(devlink_dpipe_action_put);
2328
2329static int devlink_dpipe_actions_put(struct devlink_dpipe_table *table,
2330 struct sk_buff *skb)
2331{
2332 struct nlattr *actions_attr;
2333
ae0be8de
MK		 2334 actions_attr = nla_nest_start_noflag(skb,
2335 DEVLINK_ATTR_DPIPE_TABLE_ACTIONS);
1555d204
AS		 2336 if (!actions_attr)
2337 return -EMSGSIZE;
2338
2339 if (table->table_ops->actions_dump(table->priv, skb))
2340 goto nla_put_failure;
2341
2342 nla_nest_end(skb, actions_attr);
2343 return 0;
2344
2345nla_put_failure:
2346 nla_nest_cancel(skb, actions_attr);
2347 return -EMSGSIZE;
2348}
2349
2350static int devlink_dpipe_table_put(struct sk_buff *skb,
2351 struct devlink_dpipe_table *table)
2352{
2353 struct nlattr *table_attr;
ffd3cdcc 2354 u64 table_size;
1555d204 2355
ffd3cdcc 2356 table_size = table->table_ops->size_get(table->priv);
ae0be8de 2357 table_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLE);
1555d204
AS		 2358 if (!table_attr)
2359 return -EMSGSIZE;
2360
2361 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_TABLE_NAME, table->name) ||
ffd3cdcc 2362 nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_SIZE, table_size,
1555d204
AS		 2363 DEVLINK_ATTR_PAD))
2364 goto nla_put_failure;
2365 if (nla_put_u8(skb, DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED,
2366 table->counters_enabled))
2367 goto nla_put_failure;
2368
56dc7cd0 2369 if (table->resource_valid) {
3d18e4f1
AS		 2370 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_ID,
2371 table->resource_id, DEVLINK_ATTR_PAD) ||
2372 nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_UNITS,
2373 table->resource_units, DEVLINK_ATTR_PAD))
2374 goto nla_put_failure;
56dc7cd0 2375 }
1555d204
AS		 2376 if (devlink_dpipe_matches_put(table, skb))
2377 goto nla_put_failure;
2378
2379 if (devlink_dpipe_actions_put(table, skb))
2380 goto nla_put_failure;
2381
2382 nla_nest_end(skb, table_attr);
2383 return 0;
2384
2385nla_put_failure:
2386 nla_nest_cancel(skb, table_attr);
2387 return -EMSGSIZE;
2388}
2389
2390static int devlink_dpipe_send_and_alloc_skb(struct sk_buff **pskb,
2391 struct genl_info *info)
2392{
2393 int err;
2394
2395 if (*pskb) {
2396 err = genlmsg_reply(*pskb, info);
2397 if (err)
2398 return err;
2399 }
2400 *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2401 if (!*pskb)
2402 return -ENOMEM;
2403 return 0;
2404}
2405
2406static int devlink_dpipe_tables_fill(struct genl_info *info,
2407 enum devlink_command cmd, int flags,
2408 struct list_head *dpipe_tables,
2409 const char *table_name)
2410{
2411 struct devlink *devlink = info->user_ptr[0];
2412 struct devlink_dpipe_table *table;
2413 struct nlattr *tables_attr;
2414 struct sk_buff *skb = NULL;
2415 struct nlmsghdr *nlh;
2416 bool incomplete;
2417 void *hdr;
2418 int i;
2419 int err;
2420
2421 table = list_first_entry(dpipe_tables,
2422 struct devlink_dpipe_table, list);
2423start_again:
2424 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2425 if (err)
2426 return err;
2427
2428 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
2429 &devlink_nl_family, NLM_F_MULTI, cmd);
6044bd4a
HY		 2430 if (!hdr) {
2431 nlmsg_free(skb);
1555d204 2432 return -EMSGSIZE;
6044bd4a 2433 }
1555d204
AS		 2434
2435 if (devlink_nl_put_handle(skb, devlink))
2436 goto nla_put_failure;
ae0be8de 2437 tables_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLES);
1555d204
AS		 2438 if (!tables_attr)
2439 goto nla_put_failure;
2440
2441 i = 0;
2442 incomplete = false;
2443 list_for_each_entry_from(table, dpipe_tables, list) {
2444 if (!table_name) {
2445 err = devlink_dpipe_table_put(skb, table);
2446 if (err) {
2447 if (!i)
2448 goto err_table_put;
2449 incomplete = true;
2450 break;
2451 }
2452 } else {
2453 if (!strcmp(table->name, table_name)) {
2454 err = devlink_dpipe_table_put(skb, table);
2455 if (err)
2456 break;
2457 }
2458 }
2459 i++;
2460 }
2461
2462 nla_nest_end(skb, tables_attr);
2463 genlmsg_end(skb, hdr);
2464 if (incomplete)
2465 goto start_again;
2466
2467send_done:
2468 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
2469 NLMSG_DONE, 0, flags | NLM_F_MULTI);
2470 if (!nlh) {
2471 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2472 if (err)
7fe4d6dc 2473 return err;
1555d204
AS		 2474 goto send_done;
2475 }
2476
2477 return genlmsg_reply(skb, info);
2478
2479nla_put_failure:
2480 err = -EMSGSIZE;
2481err_table_put:
1555d204
AS		 2482 nlmsg_free(skb);
2483 return err;
2484}
2485
2486static int devlink_nl_cmd_dpipe_table_get(struct sk_buff *skb,
2487 struct genl_info *info)
2488{
2489 struct devlink *devlink = info->user_ptr[0];
2490 const char *table_name = NULL;
2491
2492 if (info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
2493 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
2494
2495 return devlink_dpipe_tables_fill(info, DEVLINK_CMD_DPIPE_TABLE_GET, 0,
2496 &devlink->dpipe_table_list,
2497 table_name);
2498}
2499
2500static int devlink_dpipe_value_put(struct sk_buff *skb,
2501 struct devlink_dpipe_value *value)
2502{
2503 if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE,
2504 value->value_size, value->value))
2505 return -EMSGSIZE;
2506 if (value->mask)
2507 if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE_MASK,
2508 value->value_size, value->mask))
2509 return -EMSGSIZE;
2510 if (value->mapping_valid)
2511 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_VALUE_MAPPING,
2512 value->mapping_value))
2513 return -EMSGSIZE;
2514 return 0;
2515}
2516
2517static int devlink_dpipe_action_value_put(struct sk_buff *skb,
2518 struct devlink_dpipe_value *value)
2519{
2520 if (!value->action)
2521 return -EINVAL;
2522 if (devlink_dpipe_action_put(skb, value->action))
2523 return -EMSGSIZE;
2524 if (devlink_dpipe_value_put(skb, value))
2525 return -EMSGSIZE;
2526 return 0;
2527}
2528
2529static int devlink_dpipe_action_values_put(struct sk_buff *skb,
2530 struct devlink_dpipe_value *values,
2531 unsigned int values_count)
2532{
2533 struct nlattr *action_attr;
2534 int i;
2535 int err;
2536
2537 for (i = 0; i < values_count; i++) {
ae0be8de
MK		 2538 action_attr = nla_nest_start_noflag(skb,
2539 DEVLINK_ATTR_DPIPE_ACTION_VALUE);
1555d204
AS		 2540 if (!action_attr)
2541 return -EMSGSIZE;
2542 err = devlink_dpipe_action_value_put(skb, &values[i]);
2543 if (err)
2544 goto err_action_value_put;
2545 nla_nest_end(skb, action_attr);
2546 }
2547 return 0;
2548
2549err_action_value_put:
2550 nla_nest_cancel(skb, action_attr);
2551 return err;
2552}
2553
2554static int devlink_dpipe_match_value_put(struct sk_buff *skb,
2555 struct devlink_dpipe_value *value)
2556{
2557 if (!value->match)
2558 return -EINVAL;
2559 if (devlink_dpipe_match_put(skb, value->match))
2560 return -EMSGSIZE;
2561 if (devlink_dpipe_value_put(skb, value))
2562 return -EMSGSIZE;
2563 return 0;
2564}
2565
2566static int devlink_dpipe_match_values_put(struct sk_buff *skb,
2567 struct devlink_dpipe_value *values,
2568 unsigned int values_count)
2569{
2570 struct nlattr *match_attr;
2571 int i;
2572 int err;
2573
2574 for (i = 0; i < values_count; i++) {
ae0be8de
MK		 2575 match_attr = nla_nest_start_noflag(skb,
2576 DEVLINK_ATTR_DPIPE_MATCH_VALUE);
1555d204
AS		 2577 if (!match_attr)
2578 return -EMSGSIZE;
2579 err = devlink_dpipe_match_value_put(skb, &values[i]);
2580 if (err)
2581 goto err_match_value_put;
2582 nla_nest_end(skb, match_attr);
2583 }
2584 return 0;
2585
2586err_match_value_put:
2587 nla_nest_cancel(skb, match_attr);
2588 return err;
2589}
2590
2591static int devlink_dpipe_entry_put(struct sk_buff *skb,
2592 struct devlink_dpipe_entry *entry)
2593{
2594 struct nlattr *entry_attr, *matches_attr, *actions_attr;
2595 int err;
2596
ae0be8de 2597 entry_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ENTRY);
1555d204
AS		 2598 if (!entry_attr)
2599 return -EMSGSIZE;
2600
2601 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_INDEX, entry->index,
2602 DEVLINK_ATTR_PAD))
2603 goto nla_put_failure;
2604 if (entry->counter_valid)
2605 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_COUNTER,
2606 entry->counter, DEVLINK_ATTR_PAD))
2607 goto nla_put_failure;
2608
ae0be8de
MK		 2609 matches_attr = nla_nest_start_noflag(skb,
2610 DEVLINK_ATTR_DPIPE_ENTRY_MATCH_VALUES);
1555d204
AS		 2611 if (!matches_attr)
2612 goto nla_put_failure;
2613
2614 err = devlink_dpipe_match_values_put(skb, entry->match_values,
2615 entry->match_values_count);
2616 if (err) {
2617 nla_nest_cancel(skb, matches_attr);
2618 goto err_match_values_put;
2619 }
2620 nla_nest_end(skb, matches_attr);
2621
ae0be8de
MK		 2622 actions_attr = nla_nest_start_noflag(skb,
2623 DEVLINK_ATTR_DPIPE_ENTRY_ACTION_VALUES);
1555d204
AS		 2624 if (!actions_attr)
2625 goto nla_put_failure;
2626
2627 err = devlink_dpipe_action_values_put(skb, entry->action_values,
2628 entry->action_values_count);
2629 if (err) {
2630 nla_nest_cancel(skb, actions_attr);
2631 goto err_action_values_put;
2632 }
2633 nla_nest_end(skb, actions_attr);
59bfde01 2634
1555d204 2635 nla_nest_end(skb, entry_attr);
59bfde01 2636 return 0;
1555d204
AS		 2637
2638nla_put_failure:
2639 err = -EMSGSIZE;
2640err_match_values_put:
2641err_action_values_put:
2642 nla_nest_cancel(skb, entry_attr);
2643 return err;
2644}
2645
2646static struct devlink_dpipe_table *
2647devlink_dpipe_table_find(struct list_head *dpipe_tables,
2eb51c75 2648 const char *table_name, struct devlink *devlink)
1555d204
AS		 2649{
2650 struct devlink_dpipe_table *table;
2eb51c75
MB		 2651 list_for_each_entry_rcu(table, dpipe_tables, list,
2652 lockdep_is_held(&devlink->lock)) {
1555d204
AS		 2653 if (!strcmp(table->name, table_name))
2654 return table;
2655 }
2656 return NULL;
2657}
2658
2659int devlink_dpipe_entry_ctx_prepare(struct devlink_dpipe_dump_ctx *dump_ctx)
2660{
2661 struct devlink *devlink;
2662 int err;
2663
2664 err = devlink_dpipe_send_and_alloc_skb(&dump_ctx->skb,
2665 dump_ctx->info);
2666 if (err)
2667 return err;
2668
2669 dump_ctx->hdr = genlmsg_put(dump_ctx->skb,
2670 dump_ctx->info->snd_portid,
2671 dump_ctx->info->snd_seq,
2672 &devlink_nl_family, NLM_F_MULTI,
2673 dump_ctx->cmd);
2674 if (!dump_ctx->hdr)
2675 goto nla_put_failure;
2676
2677 devlink = dump_ctx->info->user_ptr[0];
2678 if (devlink_nl_put_handle(dump_ctx->skb, devlink))
2679 goto nla_put_failure;
ae0be8de
MK		 2680 dump_ctx->nest = nla_nest_start_noflag(dump_ctx->skb,
2681 DEVLINK_ATTR_DPIPE_ENTRIES);
1555d204
AS		 2682 if (!dump_ctx->nest)
2683 goto nla_put_failure;
2684 return 0;
2685
2686nla_put_failure:
1555d204
AS		 2687 nlmsg_free(dump_ctx->skb);
2688 return -EMSGSIZE;
2689}
2690EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_prepare);
2691
2692int devlink_dpipe_entry_ctx_append(struct devlink_dpipe_dump_ctx *dump_ctx,
2693 struct devlink_dpipe_entry *entry)
2694{
2695 return devlink_dpipe_entry_put(dump_ctx->skb, entry);
2696}
2697EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_append);
2698
2699int devlink_dpipe_entry_ctx_close(struct devlink_dpipe_dump_ctx *dump_ctx)
2700{
2701 nla_nest_end(dump_ctx->skb, dump_ctx->nest);
2702 genlmsg_end(dump_ctx->skb, dump_ctx->hdr);
2703 return 0;
2704}
2705EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_close);
2706
35807324
AS		 2707void devlink_dpipe_entry_clear(struct devlink_dpipe_entry *entry)
2708
2709{
2710 unsigned int value_count, value_index;
2711 struct devlink_dpipe_value *value;
2712
2713 value = entry->action_values;
2714 value_count = entry->action_values_count;
2715 for (value_index = 0; value_index < value_count; value_index++) {
2716 kfree(value[value_index].value);
2717 kfree(value[value_index].mask);
2718 }
2719
2720 value = entry->match_values;
2721 value_count = entry->match_values_count;
2722 for (value_index = 0; value_index < value_count; value_index++) {
2723 kfree(value[value_index].value);
2724 kfree(value[value_index].mask);
2725 }
2726}
2727EXPORT_SYMBOL(devlink_dpipe_entry_clear);
2728
1555d204
AS		 2729static int devlink_dpipe_entries_fill(struct genl_info *info,
2730 enum devlink_command cmd, int flags,
2731 struct devlink_dpipe_table *table)
2732{
2733 struct devlink_dpipe_dump_ctx dump_ctx;
2734 struct nlmsghdr *nlh;
2735 int err;
2736
2737 dump_ctx.skb = NULL;
2738 dump_ctx.cmd = cmd;
2739 dump_ctx.info = info;
2740
2741 err = table->table_ops->entries_dump(table->priv,
2742 table->counters_enabled,
2743 &dump_ctx);
2744 if (err)
7fe4d6dc 2745 return err;
1555d204
AS		 2746
2747send_done:
2748 nlh = nlmsg_put(dump_ctx.skb, info->snd_portid, info->snd_seq,
2749 NLMSG_DONE, 0, flags | NLM_F_MULTI);
2750 if (!nlh) {
2751 err = devlink_dpipe_send_and_alloc_skb(&dump_ctx.skb, info);
2752 if (err)
7fe4d6dc 2753 return err;
1555d204
AS		 2754 goto send_done;
2755 }
2756 return genlmsg_reply(dump_ctx.skb, info);
1555d204
AS		 2757}
2758
2759static int devlink_nl_cmd_dpipe_entries_get(struct sk_buff *skb,
2760 struct genl_info *info)
2761{
2762 struct devlink *devlink = info->user_ptr[0];
2763 struct devlink_dpipe_table *table;
2764 const char *table_name;
2765
2766 if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
2767 return -EINVAL;
2768
2769 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
2770 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2eb51c75 2771 table_name, devlink);
1555d204
AS		 2772 if (!table)
2773 return -EINVAL;
2774
2775 if (!table->table_ops->entries_dump)
2776 return -EINVAL;
2777
2778 return devlink_dpipe_entries_fill(info, DEVLINK_CMD_DPIPE_ENTRIES_GET,
2779 0, table);
2780}
2781
2782static int devlink_dpipe_fields_put(struct sk_buff *skb,
2783 const struct devlink_dpipe_header *header)
2784{
2785 struct devlink_dpipe_field *field;
2786 struct nlattr *field_attr;
2787 int i;
2788
2789 for (i = 0; i < header->fields_count; i++) {
2790 field = &header->fields[i];
ae0be8de
MK		 2791 field_attr = nla_nest_start_noflag(skb,
2792 DEVLINK_ATTR_DPIPE_FIELD);
1555d204
AS		 2793 if (!field_attr)
2794 return -EMSGSIZE;
2795 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_FIELD_NAME, field->name) ||
2796 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
2797 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_BITWIDTH, field->bitwidth) ||
2798 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_MAPPING_TYPE, field->mapping_type))
2799 goto nla_put_failure;
2800 nla_nest_end(skb, field_attr);
2801 }
2802 return 0;
2803
2804nla_put_failure:
2805 nla_nest_cancel(skb, field_attr);
2806 return -EMSGSIZE;
2807}
2808
2809static int devlink_dpipe_header_put(struct sk_buff *skb,
2810 struct devlink_dpipe_header *header)
2811{
2812 struct nlattr *fields_attr, *header_attr;
2813 int err;
2814
ae0be8de 2815 header_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADER);
cb6bf9cf 2816 if (!header_attr)
1555d204
AS		 2817 return -EMSGSIZE;
2818
2819 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_HEADER_NAME, header->name) ||
2820 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
2821 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
2822 goto nla_put_failure;
2823
ae0be8de
MK		 2824 fields_attr = nla_nest_start_noflag(skb,
2825 DEVLINK_ATTR_DPIPE_HEADER_FIELDS);
1555d204
AS		 2826 if (!fields_attr)
2827 goto nla_put_failure;
2828
2829 err = devlink_dpipe_fields_put(skb, header);
2830 if (err) {
2831 nla_nest_cancel(skb, fields_attr);
2832 goto nla_put_failure;
2833 }
2834 nla_nest_end(skb, fields_attr);
2835 nla_nest_end(skb, header_attr);
2836 return 0;
2837
2838nla_put_failure:
2839 err = -EMSGSIZE;
2840 nla_nest_cancel(skb, header_attr);
2841 return err;
2842}
2843
2844static int devlink_dpipe_headers_fill(struct genl_info *info,
2845 enum devlink_command cmd, int flags,
2846 struct devlink_dpipe_headers *
2847 dpipe_headers)
2848{
2849 struct devlink *devlink = info->user_ptr[0];
2850 struct nlattr *headers_attr;
2851 struct sk_buff *skb = NULL;
2852 struct nlmsghdr *nlh;
2853 void *hdr;
2854 int i, j;
2855 int err;
2856
2857 i = 0;
2858start_again:
2859 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2860 if (err)
2861 return err;
2862
2863 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
2864 &devlink_nl_family, NLM_F_MULTI, cmd);
6044bd4a
HY		 2865 if (!hdr) {
2866 nlmsg_free(skb);
1555d204 2867 return -EMSGSIZE;
6044bd4a 2868 }
1555d204
AS		 2869
2870 if (devlink_nl_put_handle(skb, devlink))
2871 goto nla_put_failure;
ae0be8de 2872 headers_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADERS);
1555d204
AS		 2873 if (!headers_attr)
2874 goto nla_put_failure;
2875
2876 j = 0;
2877 for (; i < dpipe_headers->headers_count; i++) {
2878 err = devlink_dpipe_header_put(skb, dpipe_headers->headers[i]);
2879 if (err) {
2880 if (!j)
2881 goto err_table_put;
2882 break;
2883 }
2884 j++;
2885 }
2886 nla_nest_end(skb, headers_attr);
2887 genlmsg_end(skb, hdr);
2888 if (i != dpipe_headers->headers_count)
2889 goto start_again;
2890
2891send_done:
2892 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
2893 NLMSG_DONE, 0, flags | NLM_F_MULTI);
2894 if (!nlh) {
2895 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2896 if (err)
7fe4d6dc 2897 return err;
1555d204
AS		 2898 goto send_done;
2899 }
2900 return genlmsg_reply(skb, info);
2901
2902nla_put_failure:
2903 err = -EMSGSIZE;
2904err_table_put:
1555d204
AS		 2905 nlmsg_free(skb);
2906 return err;
2907}
2908
2909static int devlink_nl_cmd_dpipe_headers_get(struct sk_buff *skb,
2910 struct genl_info *info)
2911{
2912 struct devlink *devlink = info->user_ptr[0];
2913
2914 if (!devlink->dpipe_headers)
2915 return -EOPNOTSUPP;
2916 return devlink_dpipe_headers_fill(info, DEVLINK_CMD_DPIPE_HEADERS_GET,
2917 0, devlink->dpipe_headers);
2918}
2919
2920static int devlink_dpipe_table_counters_set(struct devlink *devlink,
2921 const char *table_name,
2922 bool enable)
2923{
2924 struct devlink_dpipe_table *table;
2925
2926 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2eb51c75 2927 table_name, devlink);
1555d204
AS		 2928 if (!table)
2929 return -EINVAL;
2930
2931 if (table->counter_control_extern)
2932 return -EOPNOTSUPP;
2933
2934 if (!(table->counters_enabled ^ enable))
2935 return 0;
2936
2937 table->counters_enabled = enable;
2938 if (table->table_ops->counters_set_update)
2939 table->table_ops->counters_set_update(table->priv, enable);
2940 return 0;
2941}
2942
2943static int devlink_nl_cmd_dpipe_table_counters_set(struct sk_buff *skb,
2944 struct genl_info *info)
2945{
2946 struct devlink *devlink = info->user_ptr[0];
2947 const char *table_name;
2948 bool counters_enable;
2949
2950 if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME] ||
2951 !info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED])
2952 return -EINVAL;
2953
2954 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
2955 counters_enable = !!nla_get_u8(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED]);
2956
2957 return devlink_dpipe_table_counters_set(devlink, table_name,
2958 counters_enable);
08f4b591
OG		 2959}
2960
43dd7512 2961static struct devlink_resource *
d9f9b9a4
AS		 2962devlink_resource_find(struct devlink *devlink,
2963 struct devlink_resource *resource, u64 resource_id)
2964{
2965 struct list_head *resource_list;
2966
2967 if (resource)
2968 resource_list = &resource->resource_list;
2969 else
2970 resource_list = &devlink->resource_list;
2971
2972 list_for_each_entry(resource, resource_list, list) {
2973 struct devlink_resource *child_resource;
2974
2975 if (resource->id == resource_id)
2976 return resource;
2977
2978 child_resource = devlink_resource_find(devlink, resource,
2979 resource_id);
2980 if (child_resource)
2981 return child_resource;
2982 }
2983 return NULL;
2984}
2985
43dd7512
WY		 2986static void
2987devlink_resource_validate_children(struct devlink_resource *resource)
d9f9b9a4
AS		 2988{
2989 struct devlink_resource *child_resource;
2990 bool size_valid = true;
2991 u64 parts_size = 0;
2992
2993 if (list_empty(&resource->resource_list))
2994 goto out;
2995
2996 list_for_each_entry(child_resource, &resource->resource_list, list)
2997 parts_size += child_resource->size_new;
2998
b9d17175 2999 if (parts_size > resource->size_new)
d9f9b9a4
AS		 3000 size_valid = false;
3001out:
3002 resource->size_valid = size_valid;
3003}
3004
cc944ead
AS		 3005static int
3006devlink_resource_validate_size(struct devlink_resource *resource, u64 size,
3007 struct netlink_ext_ack *extack)
3008{
3009 u64 reminder;
3010 int err = 0;
3011
0f3e9c97 3012 if (size > resource->size_params.size_max) {
cc944ead
AS		 3013 NL_SET_ERR_MSG_MOD(extack, "Size larger than maximum");
3014 err = -EINVAL;
3015 }
3016
0f3e9c97 3017 if (size < resource->size_params.size_min) {
cc944ead
AS		 3018 NL_SET_ERR_MSG_MOD(extack, "Size smaller than minimum");
3019 err = -EINVAL;
3020 }
3021
0f3e9c97 3022 div64_u64_rem(size, resource->size_params.size_granularity, &reminder);
cc944ead
AS		 3023 if (reminder) {
3024 NL_SET_ERR_MSG_MOD(extack, "Wrong granularity");
3025 err = -EINVAL;
3026 }
3027
3028 return err;
3029}
3030
d9f9b9a4
AS		 3031static int devlink_nl_cmd_resource_set(struct sk_buff *skb,
3032 struct genl_info *info)
3033{
3034 struct devlink *devlink = info->user_ptr[0];
3035 struct devlink_resource *resource;
3036 u64 resource_id;
3037 u64 size;
3038 int err;
3039
3040 if (!info->attrs[DEVLINK_ATTR_RESOURCE_ID] ||
3041 !info->attrs[DEVLINK_ATTR_RESOURCE_SIZE])
3042 return -EINVAL;
3043 resource_id = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_ID]);
3044
3045 resource = devlink_resource_find(devlink, NULL, resource_id);
3046 if (!resource)
3047 return -EINVAL;
3048
d9f9b9a4 3049 size = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_SIZE]);
cc944ead 3050 err = devlink_resource_validate_size(resource, size, info->extack);
d9f9b9a4
AS		 3051 if (err)
3052 return err;
3053
3054 resource->size_new = size;
3055 devlink_resource_validate_children(resource);
3056 if (resource->parent)
3057 devlink_resource_validate_children(resource->parent);
3058 return 0;
3059}
3060
3d18e4f1 3061static int
d9f9b9a4
AS		 3062devlink_resource_size_params_put(struct devlink_resource *resource,
3063 struct sk_buff *skb)
3064{
3065 struct devlink_resource_size_params *size_params;
3066
77d27096 3067 size_params = &resource->size_params;
3d18e4f1
AS		 3068 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_GRAN,
3069 size_params->size_granularity, DEVLINK_ATTR_PAD) ||
3070 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MAX,
3071 size_params->size_max, DEVLINK_ATTR_PAD) ||
3072 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MIN,
3073 size_params->size_min, DEVLINK_ATTR_PAD) ||
3074 nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_UNIT, size_params->unit))
3075 return -EMSGSIZE;
3076 return 0;
d9f9b9a4
AS		 3077}
3078
fc56be47
JP		 3079static int devlink_resource_occ_put(struct devlink_resource *resource,
3080 struct sk_buff *skb)
3081{
3082 if (!resource->occ_get)
3083 return 0;
3084 return nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_OCC,
3085 resource->occ_get(resource->occ_get_priv),
3086 DEVLINK_ATTR_PAD);
3087}
3088
d9f9b9a4
AS		 3089static int devlink_resource_put(struct devlink *devlink, struct sk_buff *skb,
3090 struct devlink_resource *resource)
3091{
3092 struct devlink_resource *child_resource;
3093 struct nlattr *child_resource_attr;
3094 struct nlattr *resource_attr;
3095
ae0be8de 3096 resource_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_RESOURCE);
d9f9b9a4
AS		 3097 if (!resource_attr)
3098 return -EMSGSIZE;
3099
3100 if (nla_put_string(skb, DEVLINK_ATTR_RESOURCE_NAME, resource->name) ||
3101 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE, resource->size,
3102 DEVLINK_ATTR_PAD) ||
3103 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_ID, resource->id,
3104 DEVLINK_ATTR_PAD))
3105 goto nla_put_failure;
3106 if (resource->size != resource->size_new)
3107 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_NEW,
3108 resource->size_new, DEVLINK_ATTR_PAD);
fc56be47
JP		 3109 if (devlink_resource_occ_put(resource, skb))
3110 goto nla_put_failure;
3d18e4f1
AS		 3111 if (devlink_resource_size_params_put(resource, skb))
3112 goto nla_put_failure;
d9f9b9a4
AS		 3113 if (list_empty(&resource->resource_list))
3114 goto out;
3115
3116 if (nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_SIZE_VALID,
3117 resource->size_valid))
3118 goto nla_put_failure;
3119
ae0be8de
MK		 3120 child_resource_attr = nla_nest_start_noflag(skb,
3121 DEVLINK_ATTR_RESOURCE_LIST);
d9f9b9a4
AS		 3122 if (!child_resource_attr)
3123 goto nla_put_failure;
3124
3125 list_for_each_entry(child_resource, &resource->resource_list, list) {
3126 if (devlink_resource_put(devlink, skb, child_resource))
3127 goto resource_put_failure;
3128 }
3129
3130 nla_nest_end(skb, child_resource_attr);
3131out:
3132 nla_nest_end(skb, resource_attr);
3133 return 0;
3134
3135resource_put_failure:
3136 nla_nest_cancel(skb, child_resource_attr);
3137nla_put_failure:
3138 nla_nest_cancel(skb, resource_attr);
3139 return -EMSGSIZE;
3140}
3141
3142static int devlink_resource_fill(struct genl_info *info,
3143 enum devlink_command cmd, int flags)
3144{
3145 struct devlink *devlink = info->user_ptr[0];
3146 struct devlink_resource *resource;
3147 struct nlattr *resources_attr;
3148 struct sk_buff *skb = NULL;
3149 struct nlmsghdr *nlh;
3150 bool incomplete;
3151 void *hdr;
3152 int i;
3153 int err;
3154
3155 resource = list_first_entry(&devlink->resource_list,
3156 struct devlink_resource, list);
3157start_again:
3158 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
3159 if (err)
3160 return err;
3161
3162 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
3163 &devlink_nl_family, NLM_F_MULTI, cmd);
3164 if (!hdr) {
3165 nlmsg_free(skb);
3166 return -EMSGSIZE;
3167 }
3168
3169 if (devlink_nl_put_handle(skb, devlink))
3170 goto nla_put_failure;
3171
ae0be8de
MK		 3172 resources_attr = nla_nest_start_noflag(skb,
3173 DEVLINK_ATTR_RESOURCE_LIST);
d9f9b9a4
AS		 3174 if (!resources_attr)
3175 goto nla_put_failure;
3176
3177 incomplete = false;
3178 i = 0;
3179 list_for_each_entry_from(resource, &devlink->resource_list, list) {
3180 err = devlink_resource_put(devlink, skb, resource);
3181 if (err) {
3182 if (!i)
3183 goto err_resource_put;
3184 incomplete = true;
3185 break;
3186 }
3187 i++;
3188 }
3189 nla_nest_end(skb, resources_attr);
3190 genlmsg_end(skb, hdr);
3191 if (incomplete)
3192 goto start_again;
3193send_done:
3194 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
3195 NLMSG_DONE, 0, flags | NLM_F_MULTI);
3196 if (!nlh) {
3197 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
3198 if (err)
83fe9a96 3199 return err;
d9f9b9a4
AS		 3200 goto send_done;
3201 }
3202 return genlmsg_reply(skb, info);
3203
3204nla_put_failure:
3205 err = -EMSGSIZE;
3206err_resource_put:
d9f9b9a4
AS		 3207 nlmsg_free(skb);
3208 return err;
3209}
3210
3211static int devlink_nl_cmd_resource_dump(struct sk_buff *skb,
3212 struct genl_info *info)
3213{
3214 struct devlink *devlink = info->user_ptr[0];
3215
3216 if (list_empty(&devlink->resource_list))
3217 return -EOPNOTSUPP;
3218
3219 return devlink_resource_fill(info, DEVLINK_CMD_RESOURCE_DUMP, 0);
3220}
3221
2d8dc5bb
AS		 3222static int
3223devlink_resources_validate(struct devlink *devlink,
3224 struct devlink_resource *resource,
3225 struct genl_info *info)
3226{
3227 struct list_head *resource_list;
3228 int err = 0;
3229
3230 if (resource)
3231 resource_list = &resource->resource_list;
3232 else
3233 resource_list = &devlink->resource_list;
3234
3235 list_for_each_entry(resource, resource_list, list) {
3236 if (!resource->size_valid)
3237 return -EINVAL;
3238 err = devlink_resources_validate(devlink, resource, info);
3239 if (err)
3240 return err;
3241 }
3242 return err;
3243}
3244
070c63f2
JP		 3245static struct net *devlink_netns_get(struct sk_buff *skb,
3246 struct genl_info *info)
3247{
3248 struct nlattr *netns_pid_attr = info->attrs[DEVLINK_ATTR_NETNS_PID];
3249 struct nlattr *netns_fd_attr = info->attrs[DEVLINK_ATTR_NETNS_FD];
3250 struct nlattr *netns_id_attr = info->attrs[DEVLINK_ATTR_NETNS_ID];
3251 struct net *net;
3252
3253 if (!!netns_pid_attr + !!netns_fd_attr + !!netns_id_attr > 1) {
054eae82 3254 NL_SET_ERR_MSG_MOD(info->extack, "multiple netns identifying attributes specified");
070c63f2
JP		 3255 return ERR_PTR(-EINVAL);
3256 }
3257
3258 if (netns_pid_attr) {
3259 net = get_net_ns_by_pid(nla_get_u32(netns_pid_attr));
3260 } else if (netns_fd_attr) {
3261 net = get_net_ns_by_fd(nla_get_u32(netns_fd_attr));
3262 } else if (netns_id_attr) {
3263 net = get_net_ns_by_id(sock_net(skb->sk),
3264 nla_get_u32(netns_id_attr));
3265 if (!net)
3266 net = ERR_PTR(-EINVAL);
3267 } else {
3268 WARN_ON(1);
3269 net = ERR_PTR(-EINVAL);
3270 }
3271 if (IS_ERR(net)) {
054eae82 3272 NL_SET_ERR_MSG_MOD(info->extack, "Unknown network namespace");
070c63f2
JP		 3273 return ERR_PTR(-EINVAL);
3274 }
3275 if (!netlink_ns_capable(skb, net->user_ns, CAP_NET_ADMIN)) {
3276 put_net(net);
3277 return ERR_PTR(-EPERM);
3278 }
3279 return net;
3280}
3281
3282static void devlink_param_notify(struct devlink *devlink,
3283 unsigned int port_index,
3284 struct devlink_param_item *param_item,
3285 enum devlink_command cmd);
3286
3287static void devlink_reload_netns_change(struct devlink *devlink,
3288 struct net *dest_net)
3289{
3290 struct devlink_param_item *param_item;
3291
3292 /* Userspace needs to be notified about devlink objects
3293 * removed from original and entering new network namespace.
3294 * The rest of the devlink objects are re-created during
3295 * reload process so the notifications are generated separatelly.
3296 */
3297
3298 list_for_each_entry(param_item, &devlink->param_list, list)
3299 devlink_param_notify(devlink, 0, param_item,
3300 DEVLINK_CMD_PARAM_DEL);
3301 devlink_notify(devlink, DEVLINK_CMD_DEL);
3302
8273fd84 3303 __devlink_net_set(devlink, dest_net);
070c63f2
JP		 3304
3305 devlink_notify(devlink, DEVLINK_CMD_NEW);
3306 list_for_each_entry(param_item, &devlink->param_list, list)
3307 devlink_param_notify(devlink, 0, param_item,
3308 DEVLINK_CMD_PARAM_NEW);
3309}
3310
69d56e0e 3311static bool devlink_reload_supported(const struct devlink_ops *ops)
97691069 3312{
69d56e0e 3313 return ops->reload_down && ops->reload_up;
97691069
JP		 3314}
3315
2670ac26
JP		 3316static void devlink_reload_failed_set(struct devlink *devlink,
3317 bool reload_failed)
3318{
3319 if (devlink->reload_failed == reload_failed)
3320 return;
3321 devlink->reload_failed = reload_failed;
3322 devlink_notify(devlink, DEVLINK_CMD_NEW);
3323}
3324
3325bool devlink_is_reload_failed(const struct devlink *devlink)
3326{
3327 return devlink->reload_failed;
3328}
3329EXPORT_SYMBOL_GPL(devlink_is_reload_failed);
3330
a254c264
MS		 3331static void
3332__devlink_reload_stats_update(struct devlink *devlink, u32 *reload_stats,
3333 enum devlink_reload_limit limit, u32 actions_performed)
3334{
3335 unsigned long actions = actions_performed;
3336 int stat_idx;
3337 int action;
3338
3339 for_each_set_bit(action, &actions, __DEVLINK_RELOAD_ACTION_MAX) {
3340 stat_idx = limit * __DEVLINK_RELOAD_ACTION_MAX + action;
3341 reload_stats[stat_idx]++;
3342 }
3343 devlink_notify(devlink, DEVLINK_CMD_NEW);
3344}
3345
3346static void
3347devlink_reload_stats_update(struct devlink *devlink, enum devlink_reload_limit limit,
3348 u32 actions_performed)
3349{
3350 __devlink_reload_stats_update(devlink, devlink->stats.reload_stats, limit,
3351 actions_performed);
3352}
3353
77069ba2
MS		 3354/**
3355 * devlink_remote_reload_actions_performed - Update devlink on reload actions
3356 * performed which are not a direct result of devlink reload call.
3357 *
3358 * This should be called by a driver after performing reload actions in case it was not
3359 * a result of devlink reload call. For example fw_activate was performed as a result
3360 * of devlink reload triggered fw_activate on another host.
3361 * The motivation for this function is to keep data on reload actions performed on this
3362 * function whether it was done due to direct devlink reload call or not.
3363 *
3364 * @devlink: devlink
3365 * @limit: reload limit
3366 * @actions_performed: bitmask of actions performed
3367 */
3368void devlink_remote_reload_actions_performed(struct devlink *devlink,
3369 enum devlink_reload_limit limit,
3370 u32 actions_performed)
3371{
3372 if (WARN_ON(!actions_performed ||
3373 actions_performed & BIT(DEVLINK_RELOAD_ACTION_UNSPEC) ||
3374 actions_performed >= BIT(__DEVLINK_RELOAD_ACTION_MAX) ||
3375 limit > DEVLINK_RELOAD_LIMIT_MAX))
3376 return;
3377
3378 __devlink_reload_stats_update(devlink, devlink->stats.remote_reload_stats, limit,
3379 actions_performed);
3380}
3381EXPORT_SYMBOL_GPL(devlink_remote_reload_actions_performed);
3382
070c63f2 3383static int devlink_reload(struct devlink *devlink, struct net *dest_net,
dc64cc7c
MS		 3384 enum devlink_reload_action action, enum devlink_reload_limit limit,
3385 u32 *actions_performed, struct netlink_ext_ack *extack)
070c63f2 3386{
77069ba2 3387 u32 remote_reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE];
070c63f2
JP		 3388 int err;
3389
a0c76345
JP		 3390 if (!devlink->reload_enabled)
3391 return -EOPNOTSUPP;
3392
77069ba2
MS		 3393 memcpy(remote_reload_stats, devlink->stats.remote_reload_stats,
3394 sizeof(remote_reload_stats));
dc64cc7c 3395 err = devlink->ops->reload_down(devlink, !!dest_net, action, limit, extack);
070c63f2
JP		 3396 if (err)
3397 return err;
3398
3399 if (dest_net && !net_eq(dest_net, devlink_net(devlink)))
3400 devlink_reload_netns_change(devlink, dest_net);
3401
dc64cc7c 3402 err = devlink->ops->reload_up(devlink, action, limit, actions_performed, extack);
070c63f2 3403 devlink_reload_failed_set(devlink, !!err);
ccdf0721
MS		 3404 if (err)
3405 return err;
3406
3407 WARN_ON(!(*actions_performed & BIT(action)));
77069ba2
MS		 3408 /* Catch driver on updating the remote action within devlink reload */
3409 WARN_ON(memcmp(remote_reload_stats, devlink->stats.remote_reload_stats,
3410 sizeof(remote_reload_stats)));
a254c264 3411 devlink_reload_stats_update(devlink, limit, *actions_performed);
ccdf0721
MS		 3412 return 0;
3413}
3414
3415static int
3416devlink_nl_reload_actions_performed_snd(struct devlink *devlink, u32 actions_performed,
3417 enum devlink_command cmd, struct genl_info *info)
3418{
3419 struct sk_buff *msg;
3420 void *hdr;
3421
3422 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3423 if (!msg)
3424 return -ENOMEM;
3425
3426 hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq, &devlink_nl_family, 0, cmd);
3427 if (!hdr)
3428 goto free_msg;
3429
3430 if (devlink_nl_put_handle(msg, devlink))
3431 goto nla_put_failure;
3432
3433 if (nla_put_bitfield32(msg, DEVLINK_ATTR_RELOAD_ACTIONS_PERFORMED, actions_performed,
3434 actions_performed))
3435 goto nla_put_failure;
3436 genlmsg_end(msg, hdr);
3437
3438 return genlmsg_reply(msg, info);
3439
3440nla_put_failure:
3441 genlmsg_cancel(msg, hdr);
3442free_msg:
3443 nlmsg_free(msg);
3444 return -EMSGSIZE;
070c63f2
JP		 3445}
3446
2d8dc5bb
AS		 3447static int devlink_nl_cmd_reload(struct sk_buff *skb, struct genl_info *info)
3448{
3449 struct devlink *devlink = info->user_ptr[0];
ccdf0721 3450 enum devlink_reload_action action;
dc64cc7c 3451 enum devlink_reload_limit limit;
070c63f2 3452 struct net *dest_net = NULL;
ccdf0721 3453 u32 actions_performed;
2d8dc5bb
AS		 3454 int err;
3455
69d56e0e 3456 if (!devlink_reload_supported(devlink->ops))
2d8dc5bb
AS		 3457 return -EOPNOTSUPP;
3458
3459 err = devlink_resources_validate(devlink, NULL, info);
3460 if (err) {
3461 NL_SET_ERR_MSG_MOD(info->extack, "resources size validation failed");
3462 return err;
3463 }
070c63f2
JP		 3464
3465 if (info->attrs[DEVLINK_ATTR_NETNS_PID] ||
3466 info->attrs[DEVLINK_ATTR_NETNS_FD] ||
3467 info->attrs[DEVLINK_ATTR_NETNS_ID]) {
3468 dest_net = devlink_netns_get(skb, info);
3469 if (IS_ERR(dest_net))
3470 return PTR_ERR(dest_net);
3471 }
3472
ccdf0721
MS		 3473 if (info->attrs[DEVLINK_ATTR_RELOAD_ACTION])
3474 action = nla_get_u8(info->attrs[DEVLINK_ATTR_RELOAD_ACTION]);
3475 else
3476 action = DEVLINK_RELOAD_ACTION_DRIVER_REINIT;
3477
3478 if (!devlink_reload_action_is_supported(devlink, action)) {
3479 NL_SET_ERR_MSG_MOD(info->extack,
3480 "Requested reload action is not supported by the driver");
3481 return -EOPNOTSUPP;
3482 }
3483
dc64cc7c
MS		 3484 limit = DEVLINK_RELOAD_LIMIT_UNSPEC;
3485 if (info->attrs[DEVLINK_ATTR_RELOAD_LIMITS]) {
3486 struct nla_bitfield32 limits;
3487 u32 limits_selected;
3488
3489 limits = nla_get_bitfield32(info->attrs[DEVLINK_ATTR_RELOAD_LIMITS]);
3490 limits_selected = limits.value & limits.selector;
3491 if (!limits_selected) {
3492 NL_SET_ERR_MSG_MOD(info->extack, "Invalid limit selected");
3493 return -EINVAL;
3494 }
3495 for (limit = 0 ; limit <= DEVLINK_RELOAD_LIMIT_MAX ; limit++)
3496 if (limits_selected & BIT(limit))
3497 break;
3498 /* UAPI enables multiselection, but currently it is not used */
3499 if (limits_selected != BIT(limit)) {
3500 NL_SET_ERR_MSG_MOD(info->extack,
3501 "Multiselection of limit is not supported");
3502 return -EOPNOTSUPP;
3503 }
3504 if (!devlink_reload_limit_is_supported(devlink, limit)) {
3505 NL_SET_ERR_MSG_MOD(info->extack,
3506 "Requested limit is not supported by the driver");
3507 return -EOPNOTSUPP;
3508 }
3509 if (devlink_reload_combination_is_invalid(action, limit)) {
3510 NL_SET_ERR_MSG_MOD(info->extack,
3511 "Requested limit is invalid for this action");
3512 return -EINVAL;
3513 }
3514 }
3515 err = devlink_reload(devlink, dest_net, action, limit, &actions_performed, info->extack);
070c63f2
JP		 3516
3517 if (dest_net)
3518 put_net(dest_net);
3519
ccdf0721
MS		 3520 if (err)
3521 return err;
3522 /* For backward compatibility generate reply only if attributes used by user */
dc64cc7c 3523 if (!info->attrs[DEVLINK_ATTR_RELOAD_ACTION] && !info->attrs[DEVLINK_ATTR_RELOAD_LIMITS])
ccdf0721
MS		 3524 return 0;
3525
3526 return devlink_nl_reload_actions_performed_snd(devlink, actions_performed,
3527 DEVLINK_CMD_RELOAD, info);
2d8dc5bb
AS		 3528}
3529
191ed202
JP		 3530static int devlink_nl_flash_update_fill(struct sk_buff *msg,
3531 struct devlink *devlink,
3532 enum devlink_command cmd,
6700acc5 3533 struct devlink_flash_notify *params)
191ed202
JP		 3534{
3535 void *hdr;
3536
3537 hdr = genlmsg_put(msg, 0, 0, &devlink_nl_family, 0, cmd);
3538 if (!hdr)
3539 return -EMSGSIZE;
3540
3541 if (devlink_nl_put_handle(msg, devlink))
3542 goto nla_put_failure;
3543
3544 if (cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS)
3545 goto out;
3546
6700acc5 3547 if (params->status_msg &&
191ed202 3548 nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_MSG,
6700acc5 3549 params->status_msg))
191ed202 3550 goto nla_put_failure;
6700acc5 3551 if (params->component &&
191ed202 3552 nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_COMPONENT,
6700acc5 3553 params->component))
191ed202
JP		 3554 goto nla_put_failure;
3555 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_DONE,
6700acc5 3556 params->done, DEVLINK_ATTR_PAD))
191ed202
JP		 3557 goto nla_put_failure;
3558 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TOTAL,
6700acc5 3559 params->total, DEVLINK_ATTR_PAD))
191ed202 3560 goto nla_put_failure;
f92970c6 3561 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TIMEOUT,
6700acc5 3562 params->timeout, DEVLINK_ATTR_PAD))
f92970c6 3563 goto nla_put_failure;
191ed202
JP		 3564
3565out:
3566 genlmsg_end(msg, hdr);
3567 return 0;
3568
3569nla_put_failure:
3570 genlmsg_cancel(msg, hdr);
3571 return -EMSGSIZE;
3572}
3573
3574static void __devlink_flash_update_notify(struct devlink *devlink,
3575 enum devlink_command cmd,
6700acc5 3576 struct devlink_flash_notify *params)
191ed202
JP		 3577{
3578 struct sk_buff *msg;
3579 int err;
3580
3581 WARN_ON(cmd != DEVLINK_CMD_FLASH_UPDATE &&
3582 cmd != DEVLINK_CMD_FLASH_UPDATE_END &&
3583 cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS);
3584
3585 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3586 if (!msg)
3587 return;
3588
6700acc5 3589 err = devlink_nl_flash_update_fill(msg, devlink, cmd, params);
191ed202
JP		 3590 if (err)
3591 goto out_free_msg;
3592
3593 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
3594 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
3595 return;
3596
3597out_free_msg:
3598 nlmsg_free(msg);
3599}
3600
52cc5f3a 3601static void devlink_flash_update_begin_notify(struct devlink *devlink)
191ed202 3602{
6700acc5
SN		 3603 struct devlink_flash_notify params = { 0 };
3604
191ed202
JP		 3605 __devlink_flash_update_notify(devlink,
3606 DEVLINK_CMD_FLASH_UPDATE,
6700acc5 3607 &params);
191ed202 3608}
191ed202 3609
52cc5f3a 3610static void devlink_flash_update_end_notify(struct devlink *devlink)
191ed202 3611{
6700acc5
SN		 3612 struct devlink_flash_notify params = { 0 };
3613
191ed202
JP		 3614 __devlink_flash_update_notify(devlink,
3615 DEVLINK_CMD_FLASH_UPDATE_END,
6700acc5 3616 &params);
191ed202 3617}
191ed202
JP		 3618
3619void devlink_flash_update_status_notify(struct devlink *devlink,
3620 const char *status_msg,
3621 const char *component,
3622 unsigned long done,
3623 unsigned long total)
3624{
6700acc5
SN		 3625 struct devlink_flash_notify params = {
3626 .status_msg = status_msg,
3627 .component = component,
3628 .done = done,
3629 .total = total,
3630 };
3631
191ed202
JP		 3632 __devlink_flash_update_notify(devlink,
3633 DEVLINK_CMD_FLASH_UPDATE_STATUS,
6700acc5 3634 &params);
191ed202
JP		 3635}
3636EXPORT_SYMBOL_GPL(devlink_flash_update_status_notify);
3637
f92970c6
SN		 3638void devlink_flash_update_timeout_notify(struct devlink *devlink,
3639 const char *status_msg,
3640 const char *component,
3641 unsigned long timeout)
3642{
6700acc5
SN		 3643 struct devlink_flash_notify params = {
3644 .status_msg = status_msg,
3645 .component = component,
3646 .timeout = timeout,
3647 };
3648
f92970c6
SN		 3649 __devlink_flash_update_notify(devlink,
3650 DEVLINK_CMD_FLASH_UPDATE_STATUS,
6700acc5 3651 &params);
f92970c6
SN		 3652}
3653EXPORT_SYMBOL_GPL(devlink_flash_update_timeout_notify);
3654
76726ccb
JK		 3655static int devlink_nl_cmd_flash_update(struct sk_buff *skb,
3656 struct genl_info *info)
3657{
b44cfd4f 3658 struct nlattr *nla_component, *nla_overwrite_mask, *nla_file_name;
bc75c054 3659 struct devlink_flash_update_params params = {};
76726ccb 3660 struct devlink *devlink = info->user_ptr[0];
b44cfd4f 3661 const char *file_name;
22ec3d23 3662 u32 supported_params;
b44cfd4f 3663 int ret;
76726ccb
JK		 3664
3665 if (!devlink->ops->flash_update)
3666 return -EOPNOTSUPP;
3667
3668 if (!info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME])
3669 return -EINVAL;
22ec3d23
JK		 3670
3671 supported_params = devlink->ops->supported_flash_update_params;
3672
76726ccb 3673 nla_component = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_COMPONENT];
22ec3d23
JK		 3674 if (nla_component) {
3675 if (!(supported_params & DEVLINK_SUPPORT_FLASH_UPDATE_COMPONENT)) {
3676 NL_SET_ERR_MSG_ATTR(info->extack, nla_component,
3677 "component update is not supported by this device");
3678 return -EOPNOTSUPP;
3679 }
bc75c054 3680 params.component = nla_data(nla_component);
22ec3d23 3681 }
76726ccb 3682
5d5b4128
JK		 3683 nla_overwrite_mask = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_OVERWRITE_MASK];
3684 if (nla_overwrite_mask) {
3685 struct nla_bitfield32 sections;
3686
3687 if (!(supported_params & DEVLINK_SUPPORT_FLASH_UPDATE_OVERWRITE_MASK)) {
3688 NL_SET_ERR_MSG_ATTR(info->extack, nla_overwrite_mask,
3689 "overwrite settings are not supported by this device");
3690 return -EOPNOTSUPP;
3691 }
3692 sections = nla_get_bitfield32(nla_overwrite_mask);
3693 params.overwrite_mask = sections.value & sections.selector;
3694 }
3695
b44cfd4f
JK		 3696 nla_file_name = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME];
3697 file_name = nla_data(nla_file_name);
3698 ret = request_firmware(&params.fw, file_name, devlink->dev);
3699 if (ret) {
3700 NL_SET_ERR_MSG_ATTR(info->extack, nla_file_name, "failed to locate the requested firmware file");
3701 return ret;
3702 }
3703
52cc5f3a 3704 devlink_flash_update_begin_notify(devlink);
b44cfd4f 3705 ret = devlink->ops->flash_update(devlink, &params, info->extack);
52cc5f3a 3706 devlink_flash_update_end_notify(devlink);
b44cfd4f
JK		 3707
3708 release_firmware(params.fw);
3709
3710 return ret;
76726ccb
JK		 3711}
3712
036467c3
MS		 3713static const struct devlink_param devlink_param_generic[] = {
3714 {
3715 .id = DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET,
3716 .name = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_NAME,
3717 .type = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_TYPE,
3718 },
3719 {
3720 .id = DEVLINK_PARAM_GENERIC_ID_MAX_MACS,
3721 .name = DEVLINK_PARAM_GENERIC_MAX_MACS_NAME,
3722 .type = DEVLINK_PARAM_GENERIC_MAX_MACS_TYPE,
3723 },
f567bcda
VV		 3724 {
3725 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_SRIOV,
3726 .name = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_NAME,
3727 .type = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_TYPE,
3728 },
f6a69885
AV		 3729 {
3730 .id = DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT,
3731 .name = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_NAME,
3732 .type = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_TYPE,
3733 },
e3b51061
VV		 3734 {
3735 .id = DEVLINK_PARAM_GENERIC_ID_IGNORE_ARI,
3736 .name = DEVLINK_PARAM_GENERIC_IGNORE_ARI_NAME,
3737 .type = DEVLINK_PARAM_GENERIC_IGNORE_ARI_TYPE,
3738 },
f61cba42
VV		 3739 {
3740 .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX,
3741 .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_NAME,
3742 .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_TYPE,
3743 },
16511789
VV		 3744 {
3745 .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN,
3746 .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_NAME,
3747 .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_TYPE,
3748 },
846e980a
ST		 3749 {
3750 .id = DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY,
3751 .name = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_NAME,
3752 .type = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_TYPE,
3753 },
5bbd21df
DM		 3754 {
3755 .id = DEVLINK_PARAM_GENERIC_ID_RESET_DEV_ON_DRV_PROBE,
3756 .name = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_NAME,
3757 .type = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_TYPE,
3758 },
6c7295e1
MG		 3759 {
3760 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_ROCE,
3761 .name = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_NAME,
3762 .type = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_TYPE,
3763 },
195d9dec
MS		 3764 {
3765 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_REMOTE_DEV_RESET,
3766 .name = DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_NAME,
3767 .type = DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_TYPE,
3768 },
036467c3 3769};
eabaef18
MS		 3770
3771static int devlink_param_generic_verify(const struct devlink_param *param)
3772{
3773 /* verify it match generic parameter by id and name */
3774 if (param->id > DEVLINK_PARAM_GENERIC_ID_MAX)
3775 return -EINVAL;
3776 if (strcmp(param->name, devlink_param_generic[param->id].name))
3777 return -ENOENT;
3778
3779 WARN_ON(param->type != devlink_param_generic[param->id].type);
3780
3781 return 0;
3782}
3783
3784static int devlink_param_driver_verify(const struct devlink_param *param)
3785{
3786 int i;
3787
3788 if (param->id <= DEVLINK_PARAM_GENERIC_ID_MAX)
3789 return -EINVAL;
3790 /* verify no such name in generic params */
3791 for (i = 0; i <= DEVLINK_PARAM_GENERIC_ID_MAX; i++)
3792 if (!strcmp(param->name, devlink_param_generic[i].name))
3793 return -EEXIST;
3794
3795 return 0;
3796}
3797
3798static struct devlink_param_item *
3799devlink_param_find_by_name(struct list_head *param_list,
3800 const char *param_name)
3801{
3802 struct devlink_param_item *param_item;
3803
3804 list_for_each_entry(param_item, param_list, list)
3805 if (!strcmp(param_item->param->name, param_name))
3806 return param_item;
3807 return NULL;
3808}
3809
ec01aeb1
MS		 3810static struct devlink_param_item *
3811devlink_param_find_by_id(struct list_head *param_list, u32 param_id)
3812{
3813 struct devlink_param_item *param_item;
3814
3815 list_for_each_entry(param_item, param_list, list)
3816 if (param_item->param->id == param_id)
3817 return param_item;
3818 return NULL;
3819}
3820
45f05def
MS		 3821static bool
3822devlink_param_cmode_is_supported(const struct devlink_param *param,
3823 enum devlink_param_cmode cmode)
3824{
3825 return test_bit(cmode, &param->supported_cmodes);
3826}
3827
3828static int devlink_param_get(struct devlink *devlink,
3829 const struct devlink_param *param,
3830 struct devlink_param_gset_ctx *ctx)
3831{
3832 if (!param->get)
3833 return -EOPNOTSUPP;
3834 return param->get(devlink, param->id, ctx);
3835}
3836
e3b7ca18
MS		 3837static int devlink_param_set(struct devlink *devlink,
3838 const struct devlink_param *param,
3839 struct devlink_param_gset_ctx *ctx)
3840{
3841 if (!param->set)
3842 return -EOPNOTSUPP;
3843 return param->set(devlink, param->id, ctx);
3844}
3845
45f05def
MS		 3846static int
3847devlink_param_type_to_nla_type(enum devlink_param_type param_type)
3848{
3849 switch (param_type) {
3850 case DEVLINK_PARAM_TYPE_U8:
3851 return NLA_U8;
3852 case DEVLINK_PARAM_TYPE_U16:
3853 return NLA_U16;
3854 case DEVLINK_PARAM_TYPE_U32:
3855 return NLA_U32;
3856 case DEVLINK_PARAM_TYPE_STRING:
3857 return NLA_STRING;
3858 case DEVLINK_PARAM_TYPE_BOOL:
3859 return NLA_FLAG;
3860 default:
3861 return -EINVAL;
3862 }
3863}
3864
3865static int
3866devlink_nl_param_value_fill_one(struct sk_buff *msg,
3867 enum devlink_param_type type,
3868 enum devlink_param_cmode cmode,
3869 union devlink_param_value val)
3870{
3871 struct nlattr *param_value_attr;
3872
ae0be8de
MK		 3873 param_value_attr = nla_nest_start_noflag(msg,
3874 DEVLINK_ATTR_PARAM_VALUE);
45f05def
MS		 3875 if (!param_value_attr)
3876 goto nla_put_failure;
3877
3878 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_CMODE, cmode))
3879 goto value_nest_cancel;
3880
3881 switch (type) {
3882 case DEVLINK_PARAM_TYPE_U8:
3883 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu8))
3884 goto value_nest_cancel;
3885 break;
3886 case DEVLINK_PARAM_TYPE_U16:
3887 if (nla_put_u16(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu16))
3888 goto value_nest_cancel;
3889 break;
3890 case DEVLINK_PARAM_TYPE_U32:
3891 if (nla_put_u32(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu32))
3892 goto value_nest_cancel;
3893 break;
3894 case DEVLINK_PARAM_TYPE_STRING:
3895 if (nla_put_string(msg, DEVLINK_ATTR_PARAM_VALUE_DATA,
3896 val.vstr))
3897 goto value_nest_cancel;
3898 break;
3899 case DEVLINK_PARAM_TYPE_BOOL:
3900 if (val.vbool &&
3901 nla_put_flag(msg, DEVLINK_ATTR_PARAM_VALUE_DATA))
3902 goto value_nest_cancel;
3903 break;
3904 }
3905
3906 nla_nest_end(msg, param_value_attr);
3907 return 0;
3908
3909value_nest_cancel:
3910 nla_nest_cancel(msg, param_value_attr);
3911nla_put_failure:
3912 return -EMSGSIZE;
3913}
3914
3915static int devlink_nl_param_fill(struct sk_buff *msg, struct devlink *devlink,
f4601dee 3916 unsigned int port_index,
45f05def
MS		 3917 struct devlink_param_item *param_item,
3918 enum devlink_command cmd,
3919 u32 portid, u32 seq, int flags)
3920{
3921 union devlink_param_value param_value[DEVLINK_PARAM_CMODE_MAX + 1];
7c62cfb8 3922 bool param_value_set[DEVLINK_PARAM_CMODE_MAX + 1] = {};
45f05def
MS		 3923 const struct devlink_param *param = param_item->param;
3924 struct devlink_param_gset_ctx ctx;
3925 struct nlattr *param_values_list;
3926 struct nlattr *param_attr;
3927 int nla_type;
3928 void *hdr;
3929 int err;
3930 int i;
3931
3932 /* Get value from driver part to driverinit configuration mode */
3933 for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
3934 if (!devlink_param_cmode_is_supported(param, i))
3935 continue;
3936 if (i == DEVLINK_PARAM_CMODE_DRIVERINIT) {
3937 if (!param_item->driverinit_value_valid)
3938 return -EOPNOTSUPP;
3939 param_value[i] = param_item->driverinit_value;
3940 } else {
7c62cfb8
JP		 3941 if (!param_item->published)
3942 continue;
45f05def
MS		 3943 ctx.cmode = i;
3944 err = devlink_param_get(devlink, param, &ctx);
3945 if (err)
3946 return err;
3947 param_value[i] = ctx.val;
3948 }
7c62cfb8 3949 param_value_set[i] = true;
45f05def
MS		 3950 }
3951
3952 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
3953 if (!hdr)
3954 return -EMSGSIZE;
3955
3956 if (devlink_nl_put_handle(msg, devlink))
3957 goto genlmsg_cancel;
f4601dee 3958
c1e5786d
VV		 3959 if (cmd == DEVLINK_CMD_PORT_PARAM_GET ||
3960 cmd == DEVLINK_CMD_PORT_PARAM_NEW ||
3961 cmd == DEVLINK_CMD_PORT_PARAM_DEL)
f4601dee
VV		 3962 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, port_index))
3963 goto genlmsg_cancel;
3964
ae0be8de 3965 param_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PARAM);
45f05def
MS		 3966 if (!param_attr)
3967 goto genlmsg_cancel;
3968 if (nla_put_string(msg, DEVLINK_ATTR_PARAM_NAME, param->name))
3969 goto param_nest_cancel;
3970 if (param->generic && nla_put_flag(msg, DEVLINK_ATTR_PARAM_GENERIC))
3971 goto param_nest_cancel;
3972
3973 nla_type = devlink_param_type_to_nla_type(param->type);
3974 if (nla_type < 0)
3975 goto param_nest_cancel;
3976 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_TYPE, nla_type))
3977 goto param_nest_cancel;
3978
ae0be8de
MK		 3979 param_values_list = nla_nest_start_noflag(msg,
3980 DEVLINK_ATTR_PARAM_VALUES_LIST);
45f05def
MS		 3981 if (!param_values_list)
3982 goto param_nest_cancel;
3983
3984 for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
7c62cfb8 3985 if (!param_value_set[i])
45f05def
MS		 3986 continue;
3987 err = devlink_nl_param_value_fill_one(msg, param->type,
3988 i, param_value[i]);
3989 if (err)
3990 goto values_list_nest_cancel;
3991 }
3992
3993 nla_nest_end(msg, param_values_list);
3994 nla_nest_end(msg, param_attr);
3995 genlmsg_end(msg, hdr);
3996 return 0;
3997
3998values_list_nest_cancel:
3999 nla_nest_end(msg, param_values_list);
4000param_nest_cancel:
4001 nla_nest_cancel(msg, param_attr);
4002genlmsg_cancel:
4003 genlmsg_cancel(msg, hdr);
4004 return -EMSGSIZE;
4005}
4006
ea601e17 4007static void devlink_param_notify(struct devlink *devlink,
c1e5786d 4008 unsigned int port_index,
ea601e17
MS		 4009 struct devlink_param_item *param_item,
4010 enum devlink_command cmd)
4011{
4012 struct sk_buff *msg;
4013 int err;
4014
c1e5786d
VV		 4015 WARN_ON(cmd != DEVLINK_CMD_PARAM_NEW && cmd != DEVLINK_CMD_PARAM_DEL &&
4016 cmd != DEVLINK_CMD_PORT_PARAM_NEW &&
4017 cmd != DEVLINK_CMD_PORT_PARAM_DEL);
ea601e17
MS		 4018
4019 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4020 if (!msg)
4021 return;
c1e5786d
VV		 4022 err = devlink_nl_param_fill(msg, devlink, port_index, param_item, cmd,
4023 0, 0, 0);
ea601e17
MS		 4024 if (err) {
4025 nlmsg_free(msg);
4026 return;
4027 }
4028
4029 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
4030 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
4031}
4032
45f05def
MS		 4033static int devlink_nl_cmd_param_get_dumpit(struct sk_buff *msg,
4034 struct netlink_callback *cb)
4035{
4036 struct devlink_param_item *param_item;
4037 struct devlink *devlink;
4038 int start = cb->args[0];
4039 int idx = 0;
c62c2cfb 4040 int err = 0;
45f05def
MS		 4041
4042 mutex_lock(&devlink_mutex);
4043 list_for_each_entry(devlink, &devlink_list, list) {
4044 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
4045 continue;
4046 mutex_lock(&devlink->lock);
4047 list_for_each_entry(param_item, &devlink->param_list, list) {
4048 if (idx < start) {
4049 idx++;
4050 continue;
4051 }
f4601dee 4052 err = devlink_nl_param_fill(msg, devlink, 0, param_item,
45f05def
MS		 4053 DEVLINK_CMD_PARAM_GET,
4054 NETLINK_CB(cb->skb).portid,
4055 cb->nlh->nlmsg_seq,
4056 NLM_F_MULTI);
82274d07
JK		 4057 if (err == -EOPNOTSUPP) {
4058 err = 0;
4059 } else if (err) {
45f05def
MS		 4060 mutex_unlock(&devlink->lock);
4061 goto out;
4062 }
4063 idx++;
4064 }
4065 mutex_unlock(&devlink->lock);
4066 }
4067out:
4068 mutex_unlock(&devlink_mutex);
4069
c62c2cfb
JP		 4070 if (err != -EMSGSIZE)
4071 return err;
4072
45f05def
MS		 4073 cb->args[0] = idx;
4074 return msg->len;
4075}
4076
e3b7ca18
MS		 4077static int
4078devlink_param_type_get_from_info(struct genl_info *info,
4079 enum devlink_param_type *param_type)
4080{
4081 if (!info->attrs[DEVLINK_ATTR_PARAM_TYPE])
4082 return -EINVAL;
4083
4084 switch (nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_TYPE])) {
4085 case NLA_U8:
4086 *param_type = DEVLINK_PARAM_TYPE_U8;
4087 break;
4088 case NLA_U16:
4089 *param_type = DEVLINK_PARAM_TYPE_U16;
4090 break;
4091 case NLA_U32:
4092 *param_type = DEVLINK_PARAM_TYPE_U32;
4093 break;
4094 case NLA_STRING:
4095 *param_type = DEVLINK_PARAM_TYPE_STRING;
4096 break;
4097 case NLA_FLAG:
4098 *param_type = DEVLINK_PARAM_TYPE_BOOL;
4099 break;
4100 default:
4101 return -EINVAL;
4102 }
4103
4104 return 0;
4105}
4106
4107static int
4108devlink_param_value_get_from_info(const struct devlink_param *param,
4109 struct genl_info *info,
4110 union devlink_param_value *value)
4111{
8750939b 4112 struct nlattr *param_data;
f355cfcd
MS		 4113 int len;
4114
8750939b
JK		 4115 param_data = info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA];
4116
4117 if (param->type != DEVLINK_PARAM_TYPE_BOOL && !param_data)
e3b7ca18
MS		 4118 return -EINVAL;
4119
4120 switch (param->type) {
4121 case DEVLINK_PARAM_TYPE_U8:
8750939b
JK		 4122 if (nla_len(param_data) != sizeof(u8))
4123 return -EINVAL;
4124 value->vu8 = nla_get_u8(param_data);
e3b7ca18
MS		 4125 break;
4126 case DEVLINK_PARAM_TYPE_U16:
8750939b
JK		 4127 if (nla_len(param_data) != sizeof(u16))
4128 return -EINVAL;
4129 value->vu16 = nla_get_u16(param_data);
e3b7ca18
MS		 4130 break;
4131 case DEVLINK_PARAM_TYPE_U32:
8750939b
JK		 4132 if (nla_len(param_data) != sizeof(u32))
4133 return -EINVAL;
4134 value->vu32 = nla_get_u32(param_data);
e3b7ca18
MS		 4135 break;
4136 case DEVLINK_PARAM_TYPE_STRING:
8750939b
JK		 4137 len = strnlen(nla_data(param_data), nla_len(param_data));
4138 if (len == nla_len(param_data) ||
bde74ad1 4139 len >= __DEVLINK_PARAM_MAX_STRING_VALUE)
e3b7ca18 4140 return -EINVAL;
8750939b 4141 strcpy(value->vstr, nla_data(param_data));
e3b7ca18
MS		 4142 break;
4143 case DEVLINK_PARAM_TYPE_BOOL:
8750939b
JK		 4144 if (param_data && nla_len(param_data))
4145 return -EINVAL;
4146 value->vbool = nla_get_flag(param_data);
e3b7ca18
MS		 4147 break;
4148 }
4149 return 0;
4150}
4151
45f05def 4152static struct devlink_param_item *
f4601dee 4153devlink_param_get_from_info(struct list_head *param_list,
45f05def
MS		 4154 struct genl_info *info)
4155{
4156 char *param_name;
4157
4158 if (!info->attrs[DEVLINK_ATTR_PARAM_NAME])
4159 return NULL;
4160
4161 param_name = nla_data(info->attrs[DEVLINK_ATTR_PARAM_NAME]);
f4601dee 4162 return devlink_param_find_by_name(param_list, param_name);
45f05def
MS		 4163}
4164
4165static int devlink_nl_cmd_param_get_doit(struct sk_buff *skb,
4166 struct genl_info *info)
4167{
4168 struct devlink *devlink = info->user_ptr[0];
4169 struct devlink_param_item *param_item;
4170 struct sk_buff *msg;
4171 int err;
4172
f4601dee 4173 param_item = devlink_param_get_from_info(&devlink->param_list, info);
45f05def
MS		 4174 if (!param_item)
4175 return -EINVAL;
4176
4177 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4178 if (!msg)
4179 return -ENOMEM;
4180
f4601dee 4181 err = devlink_nl_param_fill(msg, devlink, 0, param_item,
45f05def
MS		 4182 DEVLINK_CMD_PARAM_GET,
4183 info->snd_portid, info->snd_seq, 0);
4184 if (err) {
4185 nlmsg_free(msg);
4186 return err;
4187 }
4188
4189 return genlmsg_reply(msg, info);
4190}
4191
9c54873b 4192static int __devlink_nl_cmd_param_set_doit(struct devlink *devlink,
c1e5786d 4193 unsigned int port_index,
9c54873b
VV		 4194 struct list_head *param_list,
4195 struct genl_info *info,
4196 enum devlink_command cmd)
e3b7ca18 4197{
e3b7ca18
MS		 4198 enum devlink_param_type param_type;
4199 struct devlink_param_gset_ctx ctx;
4200 enum devlink_param_cmode cmode;
4201 struct devlink_param_item *param_item;
4202 const struct devlink_param *param;
4203 union devlink_param_value value;
4204 int err = 0;
4205
9c54873b 4206 param_item = devlink_param_get_from_info(param_list, info);
e3b7ca18
MS		 4207 if (!param_item)
4208 return -EINVAL;
4209 param = param_item->param;
4210 err = devlink_param_type_get_from_info(info, &param_type);
4211 if (err)
4212 return err;
4213 if (param_type != param->type)
4214 return -EINVAL;
4215 err = devlink_param_value_get_from_info(param, info, &value);
4216 if (err)
4217 return err;
4218 if (param->validate) {
4219 err = param->validate(devlink, param->id, value, info->extack);
4220 if (err)
4221 return err;
4222 }
4223
4224 if (!info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE])
4225 return -EINVAL;
4226 cmode = nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE]);
4227 if (!devlink_param_cmode_is_supported(param, cmode))
4228 return -EOPNOTSUPP;
4229
4230 if (cmode == DEVLINK_PARAM_CMODE_DRIVERINIT) {
1276534c
MS		 4231 if (param->type == DEVLINK_PARAM_TYPE_STRING)
4232 strcpy(param_item->driverinit_value.vstr, value.vstr);
4233 else
4234 param_item->driverinit_value = value;
e3b7ca18
MS		 4235 param_item->driverinit_value_valid = true;
4236 } else {
4237 if (!param->set)
4238 return -EOPNOTSUPP;
4239 ctx.val = value;
4240 ctx.cmode = cmode;
4241 err = devlink_param_set(devlink, param, &ctx);
4242 if (err)
4243 return err;
4244 }
4245
c1e5786d 4246 devlink_param_notify(devlink, port_index, param_item, cmd);
e3b7ca18
MS		 4247 return 0;
4248}
4249
9c54873b
VV		 4250static int devlink_nl_cmd_param_set_doit(struct sk_buff *skb,
4251 struct genl_info *info)
4252{
4253 struct devlink *devlink = info->user_ptr[0];
4254
c1e5786d 4255 return __devlink_nl_cmd_param_set_doit(devlink, 0, &devlink->param_list,
9c54873b
VV		 4256 info, DEVLINK_CMD_PARAM_NEW);
4257}
4258
eabaef18 4259static int devlink_param_register_one(struct devlink *devlink,
c1e5786d 4260 unsigned int port_index,
39e6160e 4261 struct list_head *param_list,
c1e5786d
VV		 4262 const struct devlink_param *param,
4263 enum devlink_command cmd)
eabaef18
MS		 4264{
4265 struct devlink_param_item *param_item;
4266
39e6160e 4267 if (devlink_param_find_by_name(param_list, param->name))
eabaef18
MS		 4268 return -EEXIST;
4269
4270 if (param->supported_cmodes == BIT(DEVLINK_PARAM_CMODE_DRIVERINIT))
4271 WARN_ON(param->get || param->set);
4272 else
4273 WARN_ON(!param->get || !param->set);
4274
4275 param_item = kzalloc(sizeof(*param_item), GFP_KERNEL);
4276 if (!param_item)
4277 return -ENOMEM;
4278 param_item->param = param;
4279
39e6160e 4280 list_add_tail(&param_item->list, param_list);
c1e5786d 4281 devlink_param_notify(devlink, port_index, param_item, cmd);
eabaef18
MS		 4282 return 0;
4283}
4284
4285static void devlink_param_unregister_one(struct devlink *devlink,
c1e5786d 4286 unsigned int port_index,
39e6160e 4287 struct list_head *param_list,
c1e5786d
VV		 4288 const struct devlink_param *param,
4289 enum devlink_command cmd)
eabaef18
MS		 4290{
4291 struct devlink_param_item *param_item;
4292
39e6160e 4293 param_item = devlink_param_find_by_name(param_list, param->name);
eabaef18 4294 WARN_ON(!param_item);
c1e5786d 4295 devlink_param_notify(devlink, port_index, param_item, cmd);
eabaef18
MS		 4296 list_del(&param_item->list);
4297 kfree(param_item);
4298}
4299
f4601dee
VV		 4300static int devlink_nl_cmd_port_param_get_dumpit(struct sk_buff *msg,
4301 struct netlink_callback *cb)
4302{
4303 struct devlink_param_item *param_item;
4304 struct devlink_port *devlink_port;
4305 struct devlink *devlink;
4306 int start = cb->args[0];
4307 int idx = 0;
c62c2cfb 4308 int err = 0;
f4601dee
VV		 4309
4310 mutex_lock(&devlink_mutex);
4311 list_for_each_entry(devlink, &devlink_list, list) {
4312 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
4313 continue;
4314 mutex_lock(&devlink->lock);
4315 list_for_each_entry(devlink_port, &devlink->port_list, list) {
4316 list_for_each_entry(param_item,
4317 &devlink_port->param_list, list) {
4318 if (idx < start) {
4319 idx++;
4320 continue;
4321 }
4322 err = devlink_nl_param_fill(msg,
4323 devlink_port->devlink,
4324 devlink_port->index, param_item,
4325 DEVLINK_CMD_PORT_PARAM_GET,
4326 NETLINK_CB(cb->skb).portid,
4327 cb->nlh->nlmsg_seq,
4328 NLM_F_MULTI);
82274d07
JK		 4329 if (err == -EOPNOTSUPP) {
4330 err = 0;
4331 } else if (err) {
f4601dee
VV		 4332 mutex_unlock(&devlink->lock);
4333 goto out;
4334 }
4335 idx++;
4336 }
4337 }
4338 mutex_unlock(&devlink->lock);
4339 }
4340out:
4341 mutex_unlock(&devlink_mutex);
4342
c62c2cfb
JP		 4343 if (err != -EMSGSIZE)
4344 return err;
4345
f4601dee
VV		 4346 cb->args[0] = idx;
4347 return msg->len;
4348}
4349
4350static int devlink_nl_cmd_port_param_get_doit(struct sk_buff *skb,
4351 struct genl_info *info)
4352{
7e238de8 4353 struct devlink_port *devlink_port = info->user_ptr[1];
f4601dee
VV		 4354 struct devlink_param_item *param_item;
4355 struct sk_buff *msg;
4356 int err;
4357
4358 param_item = devlink_param_get_from_info(&devlink_port->param_list,
4359 info);
4360 if (!param_item)
4361 return -EINVAL;
4362
4363 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4364 if (!msg)
4365 return -ENOMEM;
4366
4367 err = devlink_nl_param_fill(msg, devlink_port->devlink,
4368 devlink_port->index, param_item,
4369 DEVLINK_CMD_PORT_PARAM_GET,
4370 info->snd_portid, info->snd_seq, 0);
4371 if (err) {
4372 nlmsg_free(msg);
4373 return err;
4374 }
4375
4376 return genlmsg_reply(msg, info);
4377}
4378
9c54873b
VV		 4379static int devlink_nl_cmd_port_param_set_doit(struct sk_buff *skb,
4380 struct genl_info *info)
4381{
7e238de8 4382 struct devlink_port *devlink_port = info->user_ptr[1];
9c54873b
VV		 4383
4384 return __devlink_nl_cmd_param_set_doit(devlink_port->devlink,
c1e5786d
VV		 4385 devlink_port->index,
4386 &devlink_port->param_list, info,
4387 DEVLINK_CMD_PORT_PARAM_NEW);
9c54873b
VV		 4388}
4389
a006d467
AV		 4390static int devlink_nl_region_snapshot_id_put(struct sk_buff *msg,
4391 struct devlink *devlink,
4392 struct devlink_snapshot *snapshot)
4393{
4394 struct nlattr *snap_attr;
4395 int err;
4396
ae0be8de 4397 snap_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_SNAPSHOT);
a006d467
AV		 4398 if (!snap_attr)
4399 return -EINVAL;
4400
4401 err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID, snapshot->id);
4402 if (err)
4403 goto nla_put_failure;
4404
4405 nla_nest_end(msg, snap_attr);
4406 return 0;
4407
4408nla_put_failure:
4409 nla_nest_cancel(msg, snap_attr);
4410 return err;
4411}
4412
4413static int devlink_nl_region_snapshots_id_put(struct sk_buff *msg,
4414 struct devlink *devlink,
4415 struct devlink_region *region)
4416{
4417 struct devlink_snapshot *snapshot;
4418 struct nlattr *snapshots_attr;
4419 int err;
4420
ae0be8de
MK		 4421 snapshots_attr = nla_nest_start_noflag(msg,
4422 DEVLINK_ATTR_REGION_SNAPSHOTS);
a006d467
AV		 4423 if (!snapshots_attr)
4424 return -EINVAL;
4425
4426 list_for_each_entry(snapshot, &region->snapshot_list, list) {
4427 err = devlink_nl_region_snapshot_id_put(msg, devlink, snapshot);
4428 if (err)
4429 goto nla_put_failure;
4430 }
4431
4432 nla_nest_end(msg, snapshots_attr);
4433 return 0;
4434
4435nla_put_failure:
4436 nla_nest_cancel(msg, snapshots_attr);
4437 return err;
4438}
4439
d8db7ea5
AV		 4440static int devlink_nl_region_fill(struct sk_buff *msg, struct devlink *devlink,
4441 enum devlink_command cmd, u32 portid,
4442 u32 seq, int flags,
4443 struct devlink_region *region)
4444{
4445 void *hdr;
4446 int err;
4447
4448 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
4449 if (!hdr)
4450 return -EMSGSIZE;
4451
4452 err = devlink_nl_put_handle(msg, devlink);
4453 if (err)
4454 goto nla_put_failure;
4455
6c211809
DC		 4456 if (region->port) {
4457 err = nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
4458 region->port->index);
4459 if (err)
544e7c33 4460 goto nla_put_failure;
6c211809 4461 }
544e7c33 4462
e8937681 4463 err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME, region->ops->name);
d8db7ea5
AV		 4464 if (err)
4465 goto nla_put_failure;
4466
4467 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
4468 region->size,
4469 DEVLINK_ATTR_PAD);
4470 if (err)
4471 goto nla_put_failure;
4472
a006d467
AV		 4473 err = devlink_nl_region_snapshots_id_put(msg, devlink, region);
4474 if (err)
4475 goto nla_put_failure;
4476
d8db7ea5
AV		 4477 genlmsg_end(msg, hdr);
4478 return 0;
4479
4480nla_put_failure:
4481 genlmsg_cancel(msg, hdr);
4482 return err;
4483}
4484
dd86fec7
JK		 4485static struct sk_buff *
4486devlink_nl_region_notify_build(struct devlink_region *region,
4487 struct devlink_snapshot *snapshot,
4488 enum devlink_command cmd, u32 portid, u32 seq)
866319bb
AV		 4489{
4490 struct devlink *devlink = region->devlink;
4491 struct sk_buff *msg;
4492 void *hdr;
4493 int err;
4494
866319bb
AV		 4495
4496 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4497 if (!msg)
dd86fec7 4498 return ERR_PTR(-ENOMEM);
866319bb 4499
dd86fec7
JK		 4500 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, 0, cmd);
4501 if (!hdr) {
4502 err = -EMSGSIZE;
866319bb 4503 goto out_free_msg;
dd86fec7 4504 }
866319bb
AV		 4505
4506 err = devlink_nl_put_handle(msg, devlink);
4507 if (err)
4508 goto out_cancel_msg;
4509
6c211809
DC		 4510 if (region->port) {
4511 err = nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
4512 region->port->index);
4513 if (err)
544e7c33 4514 goto out_cancel_msg;
6c211809 4515 }
544e7c33 4516
866319bb 4517 err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME,
e8937681 4518 region->ops->name);
866319bb
AV		 4519 if (err)
4520 goto out_cancel_msg;
4521
4522 if (snapshot) {
4523 err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID,
4524 snapshot->id);
4525 if (err)
4526 goto out_cancel_msg;
4527 } else {
4528 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
4529 region->size, DEVLINK_ATTR_PAD);
4530 if (err)
4531 goto out_cancel_msg;
4532 }
4533 genlmsg_end(msg, hdr);
4534
dd86fec7 4535 return msg;
866319bb
AV		 4536
4537out_cancel_msg:
4538 genlmsg_cancel(msg, hdr);
4539out_free_msg:
4540 nlmsg_free(msg);
dd86fec7
JK		 4541 return ERR_PTR(err);
4542}
4543
4544static void devlink_nl_region_notify(struct devlink_region *region,
4545 struct devlink_snapshot *snapshot,
4546 enum devlink_command cmd)
4547{
4548 struct devlink *devlink = region->devlink;
4549 struct sk_buff *msg;
4550
4551 WARN_ON(cmd != DEVLINK_CMD_REGION_NEW && cmd != DEVLINK_CMD_REGION_DEL);
4552
4553 msg = devlink_nl_region_notify_build(region, snapshot, cmd, 0, 0);
4554 if (IS_ERR(msg))
4555 return;
4556
4557 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
4558 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
866319bb
AV		 4559}
4560
12102436
JK		 4561/**
4562 * __devlink_snapshot_id_increment - Increment number of snapshots using an id
4563 * @devlink: devlink instance
4564 * @id: the snapshot id
4565 *
4566 * Track when a new snapshot begins using an id. Load the count for the
4567 * given id from the snapshot xarray, increment it, and store it back.
4568 *
4569 * Called when a new snapshot is created with the given id.
4570 *
4571 * The id *must* have been previously allocated by
4572 * devlink_region_snapshot_id_get().
4573 *
4574 * Returns 0 on success, or an error on failure.
4575 */
4576static int __devlink_snapshot_id_increment(struct devlink *devlink, u32 id)
4577{
4578 unsigned long count;
4579 void *p;
4580
4581 lockdep_assert_held(&devlink->lock);
4582
4583 p = xa_load(&devlink->snapshot_ids, id);
4584 if (WARN_ON(!p))
4585 return -EINVAL;
4586
4587 if (WARN_ON(!xa_is_value(p)))
4588 return -EINVAL;
4589
4590 count = xa_to_value(p);
4591 count++;
4592
4593 return xa_err(xa_store(&devlink->snapshot_ids, id, xa_mk_value(count),
4594 GFP_KERNEL));
4595}
4596
4597/**
4598 * __devlink_snapshot_id_decrement - Decrease number of snapshots using an id
4599 * @devlink: devlink instance
4600 * @id: the snapshot id
4601 *
4602 * Track when a snapshot is deleted and stops using an id. Load the count
4603 * for the given id from the snapshot xarray, decrement it, and store it
4604 * back.
4605 *
4606 * If the count reaches zero, erase this id from the xarray, freeing it
4607 * up for future re-use by devlink_region_snapshot_id_get().
4608 *
4609 * Called when a snapshot using the given id is deleted, and when the
4610 * initial allocator of the id is finished using it.
4611 */
4612static void __devlink_snapshot_id_decrement(struct devlink *devlink, u32 id)
4613{
4614 unsigned long count;
4615 void *p;
4616
4617 lockdep_assert_held(&devlink->lock);
4618
4619 p = xa_load(&devlink->snapshot_ids, id);
4620 if (WARN_ON(!p))
4621 return;
4622
4623 if (WARN_ON(!xa_is_value(p)))
4624 return;
4625
4626 count = xa_to_value(p);
4627
4628 if (count > 1) {
4629 count--;
4630 xa_store(&devlink->snapshot_ids, id, xa_mk_value(count),
4631 GFP_KERNEL);
4632 } else {
4633 /* If this was the last user, we can erase this id */
4634 xa_erase(&devlink->snapshot_ids, id);
4635 }
4636}
4637
b9a17abf
JK		 4638/**
4639 * __devlink_snapshot_id_insert - Insert a specific snapshot ID
4640 * @devlink: devlink instance
4641 * @id: the snapshot id
4642 *
4643 * Mark the given snapshot id as used by inserting a zero value into the
4644 * snapshot xarray.
4645 *
4646 * This must be called while holding the devlink instance lock. Unlike
4647 * devlink_snapshot_id_get, the initial reference count is zero, not one.
4648 * It is expected that the id will immediately be used before
4649 * releasing the devlink instance lock.
4650 *
4651 * Returns zero on success, or an error code if the snapshot id could not
4652 * be inserted.
4653 */
4654static int __devlink_snapshot_id_insert(struct devlink *devlink, u32 id)
4655{
4656 lockdep_assert_held(&devlink->lock);
4657
bd71ea60 4658 if (xa_load(&devlink->snapshot_ids, id))
b9a17abf
JK		 4659 return -EEXIST;
4660
4661 return xa_err(xa_store(&devlink->snapshot_ids, id, xa_mk_value(0),
4662 GFP_KERNEL));
4663}
4664
7000108f
JK		 4665/**
4666 * __devlink_region_snapshot_id_get - get snapshot ID
4667 * @devlink: devlink instance
7ef19d3b 4668 * @id: storage to return snapshot id
7000108f 4669 *
7ef19d3b
JK		 4670 * Allocates a new snapshot id. Returns zero on success, or a negative
4671 * error on failure. Must be called while holding the devlink instance
4672 * lock.
12102436
JK		 4673 *
4674 * Snapshot IDs are tracked using an xarray which stores the number of
4675 * users of the snapshot id.
4676 *
4677 * Note that the caller of this function counts as a 'user', in order to
4678 * avoid race conditions. The caller must release its hold on the
4679 * snapshot by using devlink_region_snapshot_id_put.
7000108f 4680 */
7ef19d3b 4681static int __devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id)
7000108f
JK		 4682{
4683 lockdep_assert_held(&devlink->lock);
7ef19d3b 4684
12102436
JK		 4685 return xa_alloc(&devlink->snapshot_ids, id, xa_mk_value(1),
4686 xa_limit_32b, GFP_KERNEL);
7000108f
JK		 4687}
4688
cf80faee
JK		 4689/**
4690 * __devlink_region_snapshot_create - create a new snapshot
4691 * This will add a new snapshot of a region. The snapshot
4692 * will be stored on the region struct and can be accessed
4693 * from devlink. This is useful for future analyses of snapshots.
4694 * Multiple snapshots can be created on a region.
4695 * The @snapshot_id should be obtained using the getter function.
4696 *
4697 * Must be called only while holding the devlink instance lock.
4698 *
4699 * @region: devlink region of the snapshot
4700 * @data: snapshot data
4701 * @snapshot_id: snapshot id to be created
4702 */
4703static int
4704__devlink_region_snapshot_create(struct devlink_region *region,
4705 u8 *data, u32 snapshot_id)
4706{
4707 struct devlink *devlink = region->devlink;
4708 struct devlink_snapshot *snapshot;
12102436 4709 int err;
cf80faee
JK		 4710
4711 lockdep_assert_held(&devlink->lock);
4712
4713 /* check if region can hold one more snapshot */
4714 if (region->cur_snapshots == region->max_snapshots)
47a39f61 4715 return -ENOSPC;
cf80faee
JK		 4716
4717 if (devlink_region_snapshot_get_by_id(region, snapshot_id))
4718 return -EEXIST;
4719
4720 snapshot = kzalloc(sizeof(*snapshot), GFP_KERNEL);
4721 if (!snapshot)
4722 return -ENOMEM;
4723
12102436
JK		 4724 err = __devlink_snapshot_id_increment(devlink, snapshot_id);
4725 if (err)
4726 goto err_snapshot_id_increment;
4727
cf80faee
JK		 4728 snapshot->id = snapshot_id;
4729 snapshot->region = region;
4730 snapshot->data = data;
4731
4732 list_add_tail(&snapshot->list, &region->snapshot_list);
4733
4734 region->cur_snapshots++;
4735
4736 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_NEW);
4737 return 0;
12102436
JK		 4738
4739err_snapshot_id_increment:
4740 kfree(snapshot);
4741 return err;
cf80faee
JK		 4742}
4743
92b49822
JP		 4744static void devlink_region_snapshot_del(struct devlink_region *region,
4745 struct devlink_snapshot *snapshot)
4746{
12102436
JK		 4747 struct devlink *devlink = region->devlink;
4748
4749 lockdep_assert_held(&devlink->lock);
4750
92b49822
JP		 4751 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_DEL);
4752 region->cur_snapshots--;
4753 list_del(&snapshot->list);
a0a09f6b 4754 region->ops->destructor(snapshot->data);
12102436 4755 __devlink_snapshot_id_decrement(devlink, snapshot->id);
92b49822
JP		 4756 kfree(snapshot);
4757}
4758
d8db7ea5
AV		 4759static int devlink_nl_cmd_region_get_doit(struct sk_buff *skb,
4760 struct genl_info *info)
4761{
4762 struct devlink *devlink = info->user_ptr[0];
544e7c33 4763 struct devlink_port *port = NULL;
d8db7ea5
AV		 4764 struct devlink_region *region;
4765 const char *region_name;
4766 struct sk_buff *msg;
544e7c33 4767 unsigned int index;
d8db7ea5
AV		 4768 int err;
4769
4770 if (!info->attrs[DEVLINK_ATTR_REGION_NAME])
4771 return -EINVAL;
4772
544e7c33
AL		 4773 if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
4774 index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
4775
4776 port = devlink_port_get_by_index(devlink, index);
4777 if (!port)
4778 return -ENODEV;
4779 }
4780
d8db7ea5 4781 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
544e7c33
AL		 4782 if (port)
4783 region = devlink_port_region_get_by_name(port, region_name);
4784 else
4785 region = devlink_region_get_by_name(devlink, region_name);
4786
d8db7ea5
AV		 4787 if (!region)
4788 return -EINVAL;
4789
4790 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4791 if (!msg)
4792 return -ENOMEM;
4793
4794 err = devlink_nl_region_fill(msg, devlink, DEVLINK_CMD_REGION_GET,
4795 info->snd_portid, info->snd_seq, 0,
4796 region);
4797 if (err) {
4798 nlmsg_free(msg);
4799 return err;
4800 }
4801
4802 return genlmsg_reply(msg, info);
4803}
4804
544e7c33
AL		 4805static int devlink_nl_cmd_region_get_port_dumpit(struct sk_buff *msg,
4806 struct netlink_callback *cb,
4807 struct devlink_port *port,
4808 int *idx,
4809 int start)
4810{
4811 struct devlink_region *region;
4812 int err = 0;
4813
4814 list_for_each_entry(region, &port->region_list, list) {
4815 if (*idx < start) {
4816 (*idx)++;
4817 continue;
4818 }
4819 err = devlink_nl_region_fill(msg, port->devlink,
4820 DEVLINK_CMD_REGION_GET,
4821 NETLINK_CB(cb->skb).portid,
4822 cb->nlh->nlmsg_seq,
4823 NLM_F_MULTI, region);
4824 if (err)
4825 goto out;
4826 (*idx)++;
4827 }
4828
4829out:
4830 return err;
4831}
4832
4833static int devlink_nl_cmd_region_get_devlink_dumpit(struct sk_buff *msg,
4834 struct netlink_callback *cb,
4835 struct devlink *devlink,
4836 int *idx,
4837 int start)
4838{
4839 struct devlink_region *region;
4840 struct devlink_port *port;
4841 int err = 0;
4842
4843 mutex_lock(&devlink->lock);
4844 list_for_each_entry(region, &devlink->region_list, list) {
4845 if (*idx < start) {
4846 (*idx)++;
4847 continue;
4848 }
4849 err = devlink_nl_region_fill(msg, devlink,
4850 DEVLINK_CMD_REGION_GET,
4851 NETLINK_CB(cb->skb).portid,
4852 cb->nlh->nlmsg_seq,
4853 NLM_F_MULTI, region);
4854 if (err)
4855 goto out;
4856 (*idx)++;
4857 }
4858
4859 list_for_each_entry(port, &devlink->port_list, list) {
4860 err = devlink_nl_cmd_region_get_port_dumpit(msg, cb, port, idx,
4861 start);
4862 if (err)
4863 goto out;
4864 }
4865
4866out:
4867 mutex_unlock(&devlink->lock);
4868 return err;
4869}
4870
d8db7ea5
AV		 4871static int devlink_nl_cmd_region_get_dumpit(struct sk_buff *msg,
4872 struct netlink_callback *cb)
4873{
d8db7ea5
AV		 4874 struct devlink *devlink;
4875 int start = cb->args[0];
4876 int idx = 0;
4877 int err;
4878
4879 mutex_lock(&devlink_mutex);
4880 list_for_each_entry(devlink, &devlink_list, list) {
4881 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
4882 continue;
544e7c33
AL		 4883 err = devlink_nl_cmd_region_get_devlink_dumpit(msg, cb, devlink,
4884 &idx, start);
4885 if (err)
4886 goto out;
d8db7ea5
AV		 4887 }
4888out:
4889 mutex_unlock(&devlink_mutex);
4890 cb->args[0] = idx;
4891 return msg->len;
4892}
4893
866319bb
AV		 4894static int devlink_nl_cmd_region_del(struct sk_buff *skb,
4895 struct genl_info *info)
4896{
4897 struct devlink *devlink = info->user_ptr[0];
4898 struct devlink_snapshot *snapshot;
544e7c33 4899 struct devlink_port *port = NULL;
866319bb
AV		 4900 struct devlink_region *region;
4901 const char *region_name;
544e7c33 4902 unsigned int index;
866319bb
AV		 4903 u32 snapshot_id;
4904
4905 if (!info->attrs[DEVLINK_ATTR_REGION_NAME] ||
4906 !info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID])
4907 return -EINVAL;
4908
4909 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
4910 snapshot_id = nla_get_u32(info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
4911
544e7c33
AL		 4912 if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
4913 index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
4914
4915 port = devlink_port_get_by_index(devlink, index);
4916 if (!port)
4917 return -ENODEV;
4918 }
4919
4920 if (port)
4921 region = devlink_port_region_get_by_name(port, region_name);
4922 else
4923 region = devlink_region_get_by_name(devlink, region_name);
4924
866319bb
AV		 4925 if (!region)
4926 return -EINVAL;
4927
4928 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
4929 if (!snapshot)
4930 return -EINVAL;
4931
92b49822 4932 devlink_region_snapshot_del(region, snapshot);
866319bb
AV		 4933 return 0;
4934}
4935
b9a17abf
JK		 4936static int
4937devlink_nl_cmd_region_new(struct sk_buff *skb, struct genl_info *info)
4938{
4939 struct devlink *devlink = info->user_ptr[0];
043b3e22 4940 struct devlink_snapshot *snapshot;
544e7c33 4941 struct devlink_port *port = NULL;
043b3e22 4942 struct nlattr *snapshot_id_attr;
b9a17abf
JK		 4943 struct devlink_region *region;
4944 const char *region_name;
544e7c33 4945 unsigned int index;
b9a17abf
JK		 4946 u32 snapshot_id;
4947 u8 *data;
4948 int err;
4949
4950 if (!info->attrs[DEVLINK_ATTR_REGION_NAME]) {
4951 NL_SET_ERR_MSG_MOD(info->extack, "No region name provided");
4952 return -EINVAL;
4953 }
4954
b9a17abf 4955 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
544e7c33
AL		 4956
4957 if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
4958 index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
4959
4960 port = devlink_port_get_by_index(devlink, index);
4961 if (!port)
4962 return -ENODEV;
4963 }
4964
4965 if (port)
4966 region = devlink_port_region_get_by_name(port, region_name);
4967 else
4968 region = devlink_region_get_by_name(devlink, region_name);
4969
b9a17abf
JK		 4970 if (!region) {
4971 NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not exist");
4972 return -EINVAL;
4973 }
4974
4975 if (!region->ops->snapshot) {
4976 NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not support taking an immediate snapshot");
4977 return -EOPNOTSUPP;
4978 }
4979
4980 if (region->cur_snapshots == region->max_snapshots) {
4981 NL_SET_ERR_MSG_MOD(info->extack, "The region has reached the maximum number of stored snapshots");
4982 return -ENOSPC;
4983 }
4984
043b3e22
JK		 4985 snapshot_id_attr = info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID];
4986 if (snapshot_id_attr) {
4987 snapshot_id = nla_get_u32(snapshot_id_attr);
b9a17abf 4988
043b3e22
JK		 4989 if (devlink_region_snapshot_get_by_id(region, snapshot_id)) {
4990 NL_SET_ERR_MSG_MOD(info->extack, "The requested snapshot id is already in use");
4991 return -EEXIST;
4992 }
b9a17abf 4993
043b3e22
JK		 4994 err = __devlink_snapshot_id_insert(devlink, snapshot_id);
4995 if (err)
4996 return err;
4997 } else {
4998 err = __devlink_region_snapshot_id_get(devlink, &snapshot_id);
4999 if (err) {
5000 NL_SET_ERR_MSG_MOD(info->extack, "Failed to allocate a new snapshot id");
5001 return err;
5002 }
5003 }
b9a17abf 5004
544e7c33
AL		 5005 if (port)
5006 err = region->port_ops->snapshot(port, region->port_ops,
5007 info->extack, &data);
5008 else
5009 err = region->ops->snapshot(devlink, region->ops,
5010 info->extack, &data);
b9a17abf
JK		 5011 if (err)
5012 goto err_snapshot_capture;
5013
5014 err = __devlink_region_snapshot_create(region, data, snapshot_id);
5015 if (err)
5016 goto err_snapshot_create;
5017
043b3e22
JK		 5018 if (!snapshot_id_attr) {
5019 struct sk_buff *msg;
5020
5021 snapshot = devlink_region_snapshot_get_by_id(region,
5022 snapshot_id);
5023 if (WARN_ON(!snapshot))
5024 return -EINVAL;
5025
5026 msg = devlink_nl_region_notify_build(region, snapshot,
5027 DEVLINK_CMD_REGION_NEW,
5028 info->snd_portid,
5029 info->snd_seq);
5030 err = PTR_ERR_OR_ZERO(msg);
5031 if (err)
5032 goto err_notify;
5033
5034 err = genlmsg_reply(msg, info);
5035 if (err)
5036 goto err_notify;
5037 }
5038
b9a17abf
JK		 5039 return 0;
5040
5041err_snapshot_create:
5042 region->ops->destructor(data);
5043err_snapshot_capture:
5044 __devlink_snapshot_id_decrement(devlink, snapshot_id);
5045 return err;
043b3e22
JK		 5046
5047err_notify:
5048 devlink_region_snapshot_del(region, snapshot);
5049 return err;
b9a17abf
JK		 5050}
5051
4e54795a
AV		 5052static int devlink_nl_cmd_region_read_chunk_fill(struct sk_buff *msg,
5053 struct devlink *devlink,
5054 u8 *chunk, u32 chunk_size,
5055 u64 addr)
5056{
5057 struct nlattr *chunk_attr;
5058 int err;
5059
ae0be8de 5060 chunk_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_CHUNK);
4e54795a
AV		 5061 if (!chunk_attr)
5062 return -EINVAL;
5063
5064 err = nla_put(msg, DEVLINK_ATTR_REGION_CHUNK_DATA, chunk_size, chunk);
5065 if (err)
5066 goto nla_put_failure;
5067
5068 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_CHUNK_ADDR, addr,
5069 DEVLINK_ATTR_PAD);
5070 if (err)
5071 goto nla_put_failure;
5072
5073 nla_nest_end(msg, chunk_attr);
5074 return 0;
5075
5076nla_put_failure:
5077 nla_nest_cancel(msg, chunk_attr);
5078 return err;
5079}
5080
5081#define DEVLINK_REGION_READ_CHUNK_SIZE 256
5082
5083static int devlink_nl_region_read_snapshot_fill(struct sk_buff *skb,
5084 struct devlink *devlink,
5085 struct devlink_region *region,
5086 struct nlattr **attrs,
5087 u64 start_offset,
5088 u64 end_offset,
4e54795a
AV		 5089 u64 *new_offset)
5090{
5091 struct devlink_snapshot *snapshot;
5092 u64 curr_offset = start_offset;
5093 u32 snapshot_id;
5094 int err = 0;
5095
5096 *new_offset = start_offset;
5097
5098 snapshot_id = nla_get_u32(attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
5099 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
5100 if (!snapshot)
5101 return -EINVAL;
5102
4e54795a
AV		 5103 while (curr_offset < end_offset) {
5104 u32 data_size;
5105 u8 *data;
5106
5107 if (end_offset - curr_offset < DEVLINK_REGION_READ_CHUNK_SIZE)
5108 data_size = end_offset - curr_offset;
5109 else
5110 data_size = DEVLINK_REGION_READ_CHUNK_SIZE;
5111
5112 data = &snapshot->data[curr_offset];
5113 err = devlink_nl_cmd_region_read_chunk_fill(skb, devlink,
5114 data, data_size,
5115 curr_offset);
5116 if (err)
5117 break;
5118
5119 curr_offset += data_size;
5120 }
5121 *new_offset = curr_offset;
5122
5123 return err;
5124}
5125
5126static int devlink_nl_cmd_region_read_dumpit(struct sk_buff *skb,
5127 struct netlink_callback *cb)
5128{
ee85da53 5129 const struct genl_dumpit_info *info = genl_dumpit_info(cb);
5a46b062 5130 u64 ret_offset, start_offset, end_offset = U64_MAX;
ee85da53 5131 struct nlattr **attrs = info->attrs;
544e7c33 5132 struct devlink_port *port = NULL;
4e54795a
AV		 5133 struct devlink_region *region;
5134 struct nlattr *chunks_attr;
5135 const char *region_name;
5136 struct devlink *devlink;
544e7c33 5137 unsigned int index;
4e54795a
AV		 5138 void *hdr;
5139 int err;
5140
5141 start_offset = *((u64 *)&cb->args[0]);
5142
dac7c08f 5143 mutex_lock(&devlink_mutex);
4e54795a 5144 devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
fdd41ec2
PP		 5145 if (IS_ERR(devlink)) {
5146 err = PTR_ERR(devlink);
dac7c08f 5147 goto out_dev;
fdd41ec2 5148 }
4e54795a 5149
4e54795a
AV		 5150 mutex_lock(&devlink->lock);
5151
5152 if (!attrs[DEVLINK_ATTR_REGION_NAME] ||
fdd41ec2
PP		 5153 !attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]) {
5154 err = -EINVAL;
4e54795a 5155 goto out_unlock;
fdd41ec2 5156 }
4e54795a 5157
544e7c33
AL		 5158 if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
5159 index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
5160
5161 port = devlink_port_get_by_index(devlink, index);
0d8cb946
DC		 5162 if (!port) {
5163 err = -ENODEV;
5164 goto out_unlock;
5165 }
544e7c33
AL		 5166 }
5167
4e54795a 5168 region_name = nla_data(attrs[DEVLINK_ATTR_REGION_NAME]);
544e7c33
AL		 5169
5170 if (port)
5171 region = devlink_port_region_get_by_name(port, region_name);
5172 else
5173 region = devlink_region_get_by_name(devlink, region_name);
5174
fdd41ec2
PP		 5175 if (!region) {
5176 err = -EINVAL;
4e54795a 5177 goto out_unlock;
fdd41ec2 5178 }
4e54795a 5179
5a46b062
JK		 5180 if (attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR] &&
5181 attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]) {
5182 if (!start_offset)
5183 start_offset =
5184 nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
5185
5186 end_offset = nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
5187 end_offset += nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]);
5188 }
5189
5190 if (end_offset > region->size)
5191 end_offset = region->size;
5192
d5b90e99 5193 /* return 0 if there is no further data to read */
5a46b062 5194 if (start_offset == end_offset) {
d5b90e99
JK		 5195 err = 0;
5196 goto out_unlock;
5197 }
5198
4e54795a
AV		 5199 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
5200 &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI,
5201 DEVLINK_CMD_REGION_READ);
fdd41ec2
PP		 5202 if (!hdr) {
5203 err = -EMSGSIZE;
4e54795a 5204 goto out_unlock;
fdd41ec2 5205 }
4e54795a
AV		 5206
5207 err = devlink_nl_put_handle(skb, devlink);
5208 if (err)
5209 goto nla_put_failure;
5210
6c211809
DC		 5211 if (region->port) {
5212 err = nla_put_u32(skb, DEVLINK_ATTR_PORT_INDEX,
5213 region->port->index);
5214 if (err)
544e7c33 5215 goto nla_put_failure;
6c211809 5216 }
544e7c33 5217
4e54795a
AV		 5218 err = nla_put_string(skb, DEVLINK_ATTR_REGION_NAME, region_name);
5219 if (err)
5220 goto nla_put_failure;
5221
ae0be8de 5222 chunks_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_REGION_CHUNKS);
fdd41ec2
PP		 5223 if (!chunks_attr) {
5224 err = -EMSGSIZE;
4e54795a 5225 goto nla_put_failure;
fdd41ec2 5226 }
4e54795a 5227
4e54795a
AV		 5228 err = devlink_nl_region_read_snapshot_fill(skb, devlink,
5229 region, attrs,
5230 start_offset,
5a46b062 5231 end_offset, &ret_offset);
4e54795a
AV		 5232
5233 if (err && err != -EMSGSIZE)
5234 goto nla_put_failure;
5235
5236 /* Check if there was any progress done to prevent infinite loop */
fdd41ec2
PP		 5237 if (ret_offset == start_offset) {
5238 err = -EINVAL;
4e54795a 5239 goto nla_put_failure;
fdd41ec2 5240 }
4e54795a
AV		 5241
5242 *((u64 *)&cb->args[0]) = ret_offset;
5243
5244 nla_nest_end(skb, chunks_attr);
5245 genlmsg_end(skb, hdr);
5246 mutex_unlock(&devlink->lock);
5247 mutex_unlock(&devlink_mutex);
5248
5249 return skb->len;
5250
5251nla_put_failure:
5252 genlmsg_cancel(skb, hdr);
5253out_unlock:
5254 mutex_unlock(&devlink->lock);
dac7c08f 5255out_dev:
4e54795a 5256 mutex_unlock(&devlink_mutex);
fdd41ec2 5257 return err;
4e54795a
AV		 5258}
5259
f9cf2288
JK		 5260struct devlink_info_req {
5261 struct sk_buff *msg;
5262};
5263
5264int devlink_info_driver_name_put(struct devlink_info_req *req, const char *name)
5265{
5266 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_DRIVER_NAME, name);
5267}
5268EXPORT_SYMBOL_GPL(devlink_info_driver_name_put);
5269
5270int devlink_info_serial_number_put(struct devlink_info_req *req, const char *sn)
5271{
5272 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_SERIAL_NUMBER, sn);
5273}
5274EXPORT_SYMBOL_GPL(devlink_info_serial_number_put);
5275
b5872cd0
VV		 5276int devlink_info_board_serial_number_put(struct devlink_info_req *req,
5277 const char *bsn)
5278{
5279 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_BOARD_SERIAL_NUMBER,
5280 bsn);
5281}
5282EXPORT_SYMBOL_GPL(devlink_info_board_serial_number_put);
5283
fc6fae7d
JK		 5284static int devlink_info_version_put(struct devlink_info_req *req, int attr,
5285 const char *version_name,
5286 const char *version_value)
5287{
5288 struct nlattr *nest;
5289 int err;
5290
ae0be8de 5291 nest = nla_nest_start_noflag(req->msg, attr);
fc6fae7d
JK		 5292 if (!nest)
5293 return -EMSGSIZE;
5294
5295 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_NAME,
5296 version_name);
5297 if (err)
5298 goto nla_put_failure;
5299
5300 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_VALUE,
5301 version_value);
5302 if (err)
5303 goto nla_put_failure;
5304
5305 nla_nest_end(req->msg, nest);
5306
5307 return 0;
5308
5309nla_put_failure:
5310 nla_nest_cancel(req->msg, nest);
5311 return err;
5312}
5313
5314int devlink_info_version_fixed_put(struct devlink_info_req *req,
5315 const char *version_name,
5316 const char *version_value)
5317{
5318 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_FIXED,
5319 version_name, version_value);
5320}
5321EXPORT_SYMBOL_GPL(devlink_info_version_fixed_put);
5322
5323int devlink_info_version_stored_put(struct devlink_info_req *req,
5324 const char *version_name,
5325 const char *version_value)
5326{
5327 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_STORED,
5328 version_name, version_value);
5329}
5330EXPORT_SYMBOL_GPL(devlink_info_version_stored_put);
5331
5332int devlink_info_version_running_put(struct devlink_info_req *req,
5333 const char *version_name,
5334 const char *version_value)
5335{
5336 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_RUNNING,
5337 version_name, version_value);
5338}
5339EXPORT_SYMBOL_GPL(devlink_info_version_running_put);
5340
f9cf2288
JK		 5341static int
5342devlink_nl_info_fill(struct sk_buff *msg, struct devlink *devlink,
5343 enum devlink_command cmd, u32 portid,
5344 u32 seq, int flags, struct netlink_ext_ack *extack)
5345{
5346 struct devlink_info_req req;
5347 void *hdr;
5348 int err;
5349
5350 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
5351 if (!hdr)
5352 return -EMSGSIZE;
5353
5354 err = -EMSGSIZE;
5355 if (devlink_nl_put_handle(msg, devlink))
5356 goto err_cancel_msg;
5357
5358 req.msg = msg;
5359 err = devlink->ops->info_get(devlink, &req, extack);
5360 if (err)
5361 goto err_cancel_msg;
5362
5363 genlmsg_end(msg, hdr);
5364 return 0;
5365
5366err_cancel_msg:
5367 genlmsg_cancel(msg, hdr);
5368 return err;
5369}
5370
5371static int devlink_nl_cmd_info_get_doit(struct sk_buff *skb,
5372 struct genl_info *info)
5373{
5374 struct devlink *devlink = info->user_ptr[0];
5375 struct sk_buff *msg;
5376 int err;
5377
be6fe1d8 5378 if (!devlink->ops->info_get)
f9cf2288
JK		 5379 return -EOPNOTSUPP;
5380
5381 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5382 if (!msg)
5383 return -ENOMEM;
5384
5385 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
5386 info->snd_portid, info->snd_seq, 0,
5387 info->extack);
5388 if (err) {
5389 nlmsg_free(msg);
5390 return err;
5391 }
5392
5393 return genlmsg_reply(msg, info);
5394}
5395
5396static int devlink_nl_cmd_info_get_dumpit(struct sk_buff *msg,
5397 struct netlink_callback *cb)
5398{
5399 struct devlink *devlink;
5400 int start = cb->args[0];
5401 int idx = 0;
c62c2cfb 5402 int err = 0;
f9cf2288
JK		 5403
5404 mutex_lock(&devlink_mutex);
5405 list_for_each_entry(devlink, &devlink_list, list) {
5406 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
5407 continue;
5408 if (idx < start) {
5409 idx++;
5410 continue;
5411 }
5412
c493b09b
JP		 5413 if (!devlink->ops->info_get) {
5414 idx++;
5415 continue;
5416 }
5417
f9cf2288
JK		 5418 mutex_lock(&devlink->lock);
5419 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
5420 NETLINK_CB(cb->skb).portid,
5421 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5422 cb->extack);
5423 mutex_unlock(&devlink->lock);
82274d07
JK		 5424 if (err == -EOPNOTSUPP)
5425 err = 0;
5426 else if (err)
f9cf2288
JK		 5427 break;
5428 idx++;
5429 }
5430 mutex_unlock(&devlink_mutex);
5431
c62c2cfb
JP		 5432 if (err != -EMSGSIZE)
5433 return err;
5434
f9cf2288
JK		 5435 cb->args[0] = idx;
5436 return msg->len;
5437}
5438
1db64e87
EBE		 5439struct devlink_fmsg_item {
5440 struct list_head list;
5441 int attrtype;
5442 u8 nla_type;
5443 u16 len;
d2afb41a 5444 int value[];
1db64e87
EBE		 5445};
5446
5447struct devlink_fmsg {
5448 struct list_head item_list;
573ed90a
AL		 5449 bool putting_binary; /* This flag forces enclosing of binary data
5450 * in an array brackets. It forces using
5451 * of designated API:
5452 * devlink_fmsg_binary_pair_nest_start()
5453 * devlink_fmsg_binary_pair_nest_end()
5454 */
1db64e87
EBE		 5455};
5456
5457static struct devlink_fmsg *devlink_fmsg_alloc(void)
5458{
5459 struct devlink_fmsg *fmsg;
5460
5461 fmsg = kzalloc(sizeof(*fmsg), GFP_KERNEL);
5462 if (!fmsg)
5463 return NULL;
5464
5465 INIT_LIST_HEAD(&fmsg->item_list);
5466
5467 return fmsg;
5468}
5469
5470static void devlink_fmsg_free(struct devlink_fmsg *fmsg)
5471{
5472 struct devlink_fmsg_item *item, *tmp;
5473
5474 list_for_each_entry_safe(item, tmp, &fmsg->item_list, list) {
5475 list_del(&item->list);
5476 kfree(item);
5477 }
5478 kfree(fmsg);
5479}
5480
5481static int devlink_fmsg_nest_common(struct devlink_fmsg *fmsg,
5482 int attrtype)
5483{
5484 struct devlink_fmsg_item *item;
5485
5486 item = kzalloc(sizeof(*item), GFP_KERNEL);
5487 if (!item)
5488 return -ENOMEM;
5489
5490 item->attrtype = attrtype;
5491 list_add_tail(&item->list, &fmsg->item_list);
5492
5493 return 0;
5494}
5495
5496int devlink_fmsg_obj_nest_start(struct devlink_fmsg *fmsg)
5497{
573ed90a
AL		 5498 if (fmsg->putting_binary)
5499 return -EINVAL;
5500
1db64e87
EBE		 5501 return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_OBJ_NEST_START);
5502}
5503EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_start);
5504
5505static int devlink_fmsg_nest_end(struct devlink_fmsg *fmsg)
5506{
573ed90a
AL		 5507 if (fmsg->putting_binary)
5508 return -EINVAL;
5509
1db64e87
EBE		 5510 return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_NEST_END);
5511}
5512
5513int devlink_fmsg_obj_nest_end(struct devlink_fmsg *fmsg)
5514{
573ed90a
AL		 5515 if (fmsg->putting_binary)
5516 return -EINVAL;
5517
1db64e87
EBE		 5518 return devlink_fmsg_nest_end(fmsg);
5519}
5520EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_end);
5521
5522#define DEVLINK_FMSG_MAX_SIZE (GENLMSG_DEFAULT_SIZE - GENL_HDRLEN - NLA_HDRLEN)
5523
5524static int devlink_fmsg_put_name(struct devlink_fmsg *fmsg, const char *name)
5525{
5526 struct devlink_fmsg_item *item;
5527
573ed90a
AL		 5528 if (fmsg->putting_binary)
5529 return -EINVAL;
5530
1db64e87
EBE		 5531 if (strlen(name) + 1 > DEVLINK_FMSG_MAX_SIZE)
5532 return -EMSGSIZE;
5533
5534 item = kzalloc(sizeof(*item) + strlen(name) + 1, GFP_KERNEL);
5535 if (!item)
5536 return -ENOMEM;
5537
5538 item->nla_type = NLA_NUL_STRING;
5539 item->len = strlen(name) + 1;
5540 item->attrtype = DEVLINK_ATTR_FMSG_OBJ_NAME;
5541 memcpy(&item->value, name, item->len);
5542 list_add_tail(&item->list, &fmsg->item_list);
5543
5544 return 0;
5545}
5546
5547int devlink_fmsg_pair_nest_start(struct devlink_fmsg *fmsg, const char *name)
5548{
5549 int err;
5550
573ed90a
AL		 5551 if (fmsg->putting_binary)
5552 return -EINVAL;
5553
1db64e87
EBE		 5554 err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_PAIR_NEST_START);
5555 if (err)
5556 return err;
5557
5558 err = devlink_fmsg_put_name(fmsg, name);
5559 if (err)
5560 return err;
5561
5562 return 0;
5563}
5564EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_start);
5565
5566int devlink_fmsg_pair_nest_end(struct devlink_fmsg *fmsg)
5567{
573ed90a
AL		 5568 if (fmsg->putting_binary)
5569 return -EINVAL;
5570
1db64e87
EBE		 5571 return devlink_fmsg_nest_end(fmsg);
5572}
5573EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_end);
5574
5575int devlink_fmsg_arr_pair_nest_start(struct devlink_fmsg *fmsg,
5576 const char *name)
5577{
5578 int err;
5579
573ed90a
AL		 5580 if (fmsg->putting_binary)
5581 return -EINVAL;
5582
1db64e87
EBE		 5583 err = devlink_fmsg_pair_nest_start(fmsg, name);
5584 if (err)
5585 return err;
5586
5587 err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_ARR_NEST_START);
5588 if (err)
5589 return err;
5590
5591 return 0;
5592}
5593EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_start);
5594
5595int devlink_fmsg_arr_pair_nest_end(struct devlink_fmsg *fmsg)
5596{
5597 int err;
5598
573ed90a
AL		 5599 if (fmsg->putting_binary)
5600 return -EINVAL;
5601
1db64e87
EBE		 5602 err = devlink_fmsg_nest_end(fmsg);
5603 if (err)
5604 return err;
5605
5606 err = devlink_fmsg_nest_end(fmsg);
5607 if (err)
5608 return err;
5609
5610 return 0;
5611}
5612EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_end);
5613
573ed90a
AL		 5614int devlink_fmsg_binary_pair_nest_start(struct devlink_fmsg *fmsg,
5615 const char *name)
5616{
5617 int err;
5618
5619 err = devlink_fmsg_arr_pair_nest_start(fmsg, name);
5620 if (err)
5621 return err;
5622
5623 fmsg->putting_binary = true;
5624 return err;
5625}
5626EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_start);
5627
5628int devlink_fmsg_binary_pair_nest_end(struct devlink_fmsg *fmsg)
5629{
5630 if (!fmsg->putting_binary)
5631 return -EINVAL;
5632
5633 fmsg->putting_binary = false;
5634 return devlink_fmsg_arr_pair_nest_end(fmsg);
5635}
5636EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_end);
5637
1db64e87
EBE		 5638static int devlink_fmsg_put_value(struct devlink_fmsg *fmsg,
5639 const void *value, u16 value_len,
5640 u8 value_nla_type)
5641{
5642 struct devlink_fmsg_item *item;
5643
5644 if (value_len > DEVLINK_FMSG_MAX_SIZE)
5645 return -EMSGSIZE;
5646
5647 item = kzalloc(sizeof(*item) + value_len, GFP_KERNEL);
5648 if (!item)
5649 return -ENOMEM;
5650
5651 item->nla_type = value_nla_type;
5652 item->len = value_len;
5653 item->attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
5654 memcpy(&item->value, value, item->len);
5655 list_add_tail(&item->list, &fmsg->item_list);
5656
5657 return 0;
5658}
5659
5660int devlink_fmsg_bool_put(struct devlink_fmsg *fmsg, bool value)
5661{
573ed90a
AL		 5662 if (fmsg->putting_binary)
5663 return -EINVAL;
5664
1db64e87
EBE		 5665 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_FLAG);
5666}
5667EXPORT_SYMBOL_GPL(devlink_fmsg_bool_put);
5668
5669int devlink_fmsg_u8_put(struct devlink_fmsg *fmsg, u8 value)
5670{
573ed90a
AL		 5671 if (fmsg->putting_binary)
5672 return -EINVAL;
5673
1db64e87
EBE		 5674 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U8);
5675}
5676EXPORT_SYMBOL_GPL(devlink_fmsg_u8_put);
5677
5678int devlink_fmsg_u32_put(struct devlink_fmsg *fmsg, u32 value)
5679{
573ed90a
AL		 5680 if (fmsg->putting_binary)
5681 return -EINVAL;
5682
1db64e87
EBE		 5683 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U32);
5684}
5685EXPORT_SYMBOL_GPL(devlink_fmsg_u32_put);
5686
5687int devlink_fmsg_u64_put(struct devlink_fmsg *fmsg, u64 value)
5688{
573ed90a
AL		 5689 if (fmsg->putting_binary)
5690 return -EINVAL;
5691
1db64e87
EBE		 5692 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U64);
5693}
5694EXPORT_SYMBOL_GPL(devlink_fmsg_u64_put);
5695
5696int devlink_fmsg_string_put(struct devlink_fmsg *fmsg, const char *value)
5697{
573ed90a
AL		 5698 if (fmsg->putting_binary)
5699 return -EINVAL;
5700
1db64e87
EBE		 5701 return devlink_fmsg_put_value(fmsg, value, strlen(value) + 1,
5702 NLA_NUL_STRING);
5703}
5704EXPORT_SYMBOL_GPL(devlink_fmsg_string_put);
5705
573ed90a
AL		 5706int devlink_fmsg_binary_put(struct devlink_fmsg *fmsg, const void *value,
5707 u16 value_len)
1db64e87 5708{
573ed90a
AL		 5709 if (!fmsg->putting_binary)
5710 return -EINVAL;
5711
1db64e87
EBE		 5712 return devlink_fmsg_put_value(fmsg, value, value_len, NLA_BINARY);
5713}
573ed90a 5714EXPORT_SYMBOL_GPL(devlink_fmsg_binary_put);
1db64e87
EBE		 5715
5716int devlink_fmsg_bool_pair_put(struct devlink_fmsg *fmsg, const char *name,
5717 bool value)
5718{
5719 int err;
5720
5721 err = devlink_fmsg_pair_nest_start(fmsg, name);
5722 if (err)
5723 return err;
5724
5725 err = devlink_fmsg_bool_put(fmsg, value);
5726 if (err)
5727 return err;
5728
5729 err = devlink_fmsg_pair_nest_end(fmsg);
5730 if (err)
5731 return err;
5732
5733 return 0;
5734}
5735EXPORT_SYMBOL_GPL(devlink_fmsg_bool_pair_put);
5736
5737int devlink_fmsg_u8_pair_put(struct devlink_fmsg *fmsg, const char *name,
5738 u8 value)
5739{
5740 int err;
5741
5742 err = devlink_fmsg_pair_nest_start(fmsg, name);
5743 if (err)
5744 return err;
5745
5746 err = devlink_fmsg_u8_put(fmsg, value);
5747 if (err)
5748 return err;
5749
5750 err = devlink_fmsg_pair_nest_end(fmsg);
5751 if (err)
5752 return err;
5753
5754 return 0;
5755}
5756EXPORT_SYMBOL_GPL(devlink_fmsg_u8_pair_put);
5757
5758int devlink_fmsg_u32_pair_put(struct devlink_fmsg *fmsg, const char *name,
5759 u32 value)
5760{
5761 int err;
5762
5763 err = devlink_fmsg_pair_nest_start(fmsg, name);
5764 if (err)
5765 return err;
5766
5767 err = devlink_fmsg_u32_put(fmsg, value);
5768 if (err)
5769 return err;
5770
5771 err = devlink_fmsg_pair_nest_end(fmsg);
5772 if (err)
5773 return err;
5774
5775 return 0;
5776}
5777EXPORT_SYMBOL_GPL(devlink_fmsg_u32_pair_put);
5778
5779int devlink_fmsg_u64_pair_put(struct devlink_fmsg *fmsg, const char *name,
5780 u64 value)
5781{
5782 int err;
5783
5784 err = devlink_fmsg_pair_nest_start(fmsg, name);
5785 if (err)
5786 return err;
5787
5788 err = devlink_fmsg_u64_put(fmsg, value);
5789 if (err)
5790 return err;
5791
5792 err = devlink_fmsg_pair_nest_end(fmsg);
5793 if (err)
5794 return err;
5795
5796 return 0;
5797}
5798EXPORT_SYMBOL_GPL(devlink_fmsg_u64_pair_put);
5799
5800int devlink_fmsg_string_pair_put(struct devlink_fmsg *fmsg, const char *name,
5801 const char *value)
5802{
5803 int err;
5804
5805 err = devlink_fmsg_pair_nest_start(fmsg, name);
5806 if (err)
5807 return err;
5808
5809 err = devlink_fmsg_string_put(fmsg, value);
5810 if (err)
5811 return err;
5812
5813 err = devlink_fmsg_pair_nest_end(fmsg);
5814 if (err)
5815 return err;
5816
5817 return 0;
5818}
5819EXPORT_SYMBOL_GPL(devlink_fmsg_string_pair_put);
5820
5821int devlink_fmsg_binary_pair_put(struct devlink_fmsg *fmsg, const char *name,
e2cde864 5822 const void *value, u32 value_len)
1db64e87 5823{
e2cde864 5824 u32 data_size;
573ed90a 5825 int end_err;
e2cde864 5826 u32 offset;
1db64e87
EBE		 5827 int err;
5828
573ed90a 5829 err = devlink_fmsg_binary_pair_nest_start(fmsg, name);
1db64e87
EBE		 5830 if (err)
5831 return err;
5832
e2cde864
AL		 5833 for (offset = 0; offset < value_len; offset += data_size) {
5834 data_size = value_len - offset;
5835 if (data_size > DEVLINK_FMSG_MAX_SIZE)
5836 data_size = DEVLINK_FMSG_MAX_SIZE;
5837 err = devlink_fmsg_binary_put(fmsg, value + offset, data_size);
5838 if (err)
573ed90a
AL		 5839 break;
5840 /* Exit from loop with a break (instead of
5841 * return) to make sure putting_binary is turned off in
5842 * devlink_fmsg_binary_pair_nest_end
5843 */
e2cde864 5844 }
1db64e87 5845
573ed90a
AL		 5846 end_err = devlink_fmsg_binary_pair_nest_end(fmsg);
5847 if (end_err)
5848 err = end_err;
1db64e87 5849
573ed90a 5850 return err;
1db64e87
EBE		 5851}
5852EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_put);
5853
5854static int
5855devlink_fmsg_item_fill_type(struct devlink_fmsg_item *msg, struct sk_buff *skb)
5856{
5857 switch (msg->nla_type) {
5858 case NLA_FLAG:
5859 case NLA_U8:
5860 case NLA_U32:
5861 case NLA_U64:
5862 case NLA_NUL_STRING:
5863 case NLA_BINARY:
5864 return nla_put_u8(skb, DEVLINK_ATTR_FMSG_OBJ_VALUE_TYPE,
5865 msg->nla_type);
5866 default:
5867 return -EINVAL;
5868 }
5869}
5870
5871static int
5872devlink_fmsg_item_fill_data(struct devlink_fmsg_item *msg, struct sk_buff *skb)
5873{
5874 int attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
5875 u8 tmp;
5876
5877 switch (msg->nla_type) {
5878 case NLA_FLAG:
5879 /* Always provide flag data, regardless of its value */
5880 tmp = *(bool *) msg->value;
5881
5882 return nla_put_u8(skb, attrtype, tmp);
5883 case NLA_U8:
5884 return nla_put_u8(skb, attrtype, *(u8 *) msg->value);
5885 case NLA_U32:
5886 return nla_put_u32(skb, attrtype, *(u32 *) msg->value);
5887 case NLA_U64:
5888 return nla_put_u64_64bit(skb, attrtype, *(u64 *) msg->value,
5889 DEVLINK_ATTR_PAD);
5890 case NLA_NUL_STRING:
5891 return nla_put_string(skb, attrtype, (char *) &msg->value);
5892 case NLA_BINARY:
5893 return nla_put(skb, attrtype, msg->len, (void *) &msg->value);
5894 default:
5895 return -EINVAL;
5896 }
5897}
5898
5899static int
5900devlink_fmsg_prepare_skb(struct devlink_fmsg *fmsg, struct sk_buff *skb,
5901 int *start)
5902{
5903 struct devlink_fmsg_item *item;
5904 struct nlattr *fmsg_nlattr;
5905 int i = 0;
5906 int err;
5907
ae0be8de 5908 fmsg_nlattr = nla_nest_start_noflag(skb, DEVLINK_ATTR_FMSG);
1db64e87
EBE		 5909 if (!fmsg_nlattr)
5910 return -EMSGSIZE;
5911
5912 list_for_each_entry(item, &fmsg->item_list, list) {
5913 if (i < *start) {
5914 i++;
5915 continue;
5916 }
5917
5918 switch (item->attrtype) {
5919 case DEVLINK_ATTR_FMSG_OBJ_NEST_START:
5920 case DEVLINK_ATTR_FMSG_PAIR_NEST_START:
5921 case DEVLINK_ATTR_FMSG_ARR_NEST_START:
5922 case DEVLINK_ATTR_FMSG_NEST_END:
5923 err = nla_put_flag(skb, item->attrtype);
5924 break;
5925 case DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA:
5926 err = devlink_fmsg_item_fill_type(item, skb);
5927 if (err)
5928 break;
5929 err = devlink_fmsg_item_fill_data(item, skb);
5930 break;
5931 case DEVLINK_ATTR_FMSG_OBJ_NAME:
5932 err = nla_put_string(skb, item->attrtype,
5933 (char *) &item->value);
5934 break;
5935 default:
5936 err = -EINVAL;
5937 break;
5938 }
5939 if (!err)
5940 *start = ++i;
5941 else
5942 break;
5943 }
5944
5945 nla_nest_end(skb, fmsg_nlattr);
5946 return err;
5947}
5948
5949static int devlink_fmsg_snd(struct devlink_fmsg *fmsg,
5950 struct genl_info *info,
5951 enum devlink_command cmd, int flags)
5952{
5953 struct nlmsghdr *nlh;
5954 struct sk_buff *skb;
5955 bool last = false;
5956 int index = 0;
5957 void *hdr;
5958 int err;
5959
5960 while (!last) {
5961 int tmp_index = index;
5962
5963 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
5964 if (!skb)
5965 return -ENOMEM;
5966
5967 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
5968 &devlink_nl_family, flags | NLM_F_MULTI, cmd);
5969 if (!hdr) {
5970 err = -EMSGSIZE;
5971 goto nla_put_failure;
5972 }
5973
5974 err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
5975 if (!err)
5976 last = true;
5977 else if (err != -EMSGSIZE || tmp_index == index)
5978 goto nla_put_failure;
5979
5980 genlmsg_end(skb, hdr);
5981 err = genlmsg_reply(skb, info);
5982 if (err)
5983 return err;
5984 }
5985
5986 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
5987 if (!skb)
5988 return -ENOMEM;
5989 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
5990 NLMSG_DONE, 0, flags | NLM_F_MULTI);
5991 if (!nlh) {
5992 err = -EMSGSIZE;
5993 goto nla_put_failure;
5994 }
1db64e87 5995
fde55ea7 5996 return genlmsg_reply(skb, info);
1db64e87
EBE		 5997
5998nla_put_failure:
5999 nlmsg_free(skb);
6000 return err;
6001}
6002
e44ef4e4
AL		 6003static int devlink_fmsg_dumpit(struct devlink_fmsg *fmsg, struct sk_buff *skb,
6004 struct netlink_callback *cb,
6005 enum devlink_command cmd)
6006{
6007 int index = cb->args[0];
6008 int tmp_index = index;
6009 void *hdr;
6010 int err;
6011
6012 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
6013 &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI, cmd);
6014 if (!hdr) {
6015 err = -EMSGSIZE;
6016 goto nla_put_failure;
6017 }
6018
6019 err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
6020 if ((err && err != -EMSGSIZE) || tmp_index == index)
6021 goto nla_put_failure;
6022
6023 cb->args[0] = index;
6024 genlmsg_end(skb, hdr);
6025 return skb->len;
6026
6027nla_put_failure:
6028 genlmsg_cancel(skb, hdr);
6029 return err;
6030}
6031
a0bdcc59
EBE		 6032struct devlink_health_reporter {
6033 struct list_head list;
6034 void *priv;
6035 const struct devlink_health_reporter_ops *ops;
6036 struct devlink *devlink;
f4f54166 6037 struct devlink_port *devlink_port;
c8e1da0b
EBE		 6038 struct devlink_fmsg *dump_fmsg;
6039 struct mutex dump_lock; /* lock parallel read/write from dump buffers */
a0bdcc59
EBE		 6040 u64 graceful_period;
6041 bool auto_recover;
48bb52c8 6042 bool auto_dump;
a0bdcc59 6043 u8 health_state;
c8e1da0b 6044 u64 dump_ts;
d279505b 6045 u64 dump_real_ts;
c8e1da0b
EBE		 6046 u64 error_count;
6047 u64 recovery_count;
6048 u64 last_recovery_ts;
b587bdaf 6049 refcount_t refcount;
c8e1da0b
EBE		 6050};
6051
a0bdcc59
EBE		 6052void *
6053devlink_health_reporter_priv(struct devlink_health_reporter *reporter)
6054{
6055 return reporter->priv;
6056}
6057EXPORT_SYMBOL_GPL(devlink_health_reporter_priv);
6058
6059static struct devlink_health_reporter *
bd821005
VT		 6060__devlink_health_reporter_find_by_name(struct list_head *reporter_list,
6061 struct mutex *list_lock,
6062 const char *reporter_name)
a0bdcc59
EBE		 6063{
6064 struct devlink_health_reporter *reporter;
6065
bd821005
VT		 6066 lockdep_assert_held(list_lock);
6067 list_for_each_entry(reporter, reporter_list, list)
a0bdcc59
EBE		 6068 if (!strcmp(reporter->ops->name, reporter_name))
6069 return reporter;
6070 return NULL;
6071}
6072
bd821005
VT		 6073static struct devlink_health_reporter *
6074devlink_health_reporter_find_by_name(struct devlink *devlink,
6075 const char *reporter_name)
6076{
6077 return __devlink_health_reporter_find_by_name(&devlink->reporter_list,
6078 &devlink->reporters_lock,
6079 reporter_name);
6080}
6081
f4f54166
VT		 6082static struct devlink_health_reporter *
6083devlink_port_health_reporter_find_by_name(struct devlink_port *devlink_port,
6084 const char *reporter_name)
6085{
6086 return __devlink_health_reporter_find_by_name(&devlink_port->reporter_list,
6087 &devlink_port->reporters_lock,
6088 reporter_name);
6089}
6090
c57544b3
VT		 6091static struct devlink_health_reporter *
6092__devlink_health_reporter_create(struct devlink *devlink,
6093 const struct devlink_health_reporter_ops *ops,
6094 u64 graceful_period, void *priv)
6095{
6096 struct devlink_health_reporter *reporter;
6097
6098 if (WARN_ON(graceful_period && !ops->recover))
6099 return ERR_PTR(-EINVAL);
6100
6101 reporter = kzalloc(sizeof(*reporter), GFP_KERNEL);
6102 if (!reporter)
6103 return ERR_PTR(-ENOMEM);
6104
6105 reporter->priv = priv;
6106 reporter->ops = ops;
6107 reporter->devlink = devlink;
6108 reporter->graceful_period = graceful_period;
6109 reporter->auto_recover = !!ops->recover;
6110 reporter->auto_dump = !!ops->dump;
6111 mutex_init(&reporter->dump_lock);
6112 refcount_set(&reporter->refcount, 1);
6113 return reporter;
6114}
6115
15c724b9
VT		 6116/**
6117 * devlink_port_health_reporter_create - create devlink health reporter for
6118 * specified port instance
6119 *
6120 * @port: devlink_port which should contain the new reporter
6121 * @ops: ops
6122 * @graceful_period: to avoid recovery loops, in msecs
6123 * @priv: priv
6124 */
6125struct devlink_health_reporter *
6126devlink_port_health_reporter_create(struct devlink_port *port,
6127 const struct devlink_health_reporter_ops *ops,
6128 u64 graceful_period, void *priv)
6129{
6130 struct devlink_health_reporter *reporter;
6131
6132 mutex_lock(&port->reporters_lock);
6133 if (__devlink_health_reporter_find_by_name(&port->reporter_list,
6134 &port->reporters_lock, ops->name)) {
6135 reporter = ERR_PTR(-EEXIST);
6136 goto unlock;
6137 }
6138
6139 reporter = __devlink_health_reporter_create(port->devlink, ops,
6140 graceful_period, priv);
6141 if (IS_ERR(reporter))
6142 goto unlock;
6143
6144 reporter->devlink_port = port;
6145 list_add_tail(&reporter->list, &port->reporter_list);
6146unlock:
6147 mutex_unlock(&port->reporters_lock);
6148 return reporter;
6149}
6150EXPORT_SYMBOL_GPL(devlink_port_health_reporter_create);
6151
a0bdcc59
EBE		 6152/**
6153 * devlink_health_reporter_create - create devlink health reporter
6154 *
6155 * @devlink: devlink
6156 * @ops: ops
6157 * @graceful_period: to avoid recovery loops, in msecs
a0bdcc59
EBE		 6158 * @priv: priv
6159 */
6160struct devlink_health_reporter *
6161devlink_health_reporter_create(struct devlink *devlink,
6162 const struct devlink_health_reporter_ops *ops,
ba7d16c7 6163 u64 graceful_period, void *priv)
a0bdcc59
EBE		 6164{
6165 struct devlink_health_reporter *reporter;
6166
b587bdaf 6167 mutex_lock(&devlink->reporters_lock);
a0bdcc59
EBE		 6168 if (devlink_health_reporter_find_by_name(devlink, ops->name)) {
6169 reporter = ERR_PTR(-EEXIST);
6170 goto unlock;
6171 }
6172
c57544b3
VT		 6173 reporter = __devlink_health_reporter_create(devlink, ops,
6174 graceful_period, priv);
6175 if (IS_ERR(reporter))
a0bdcc59 6176 goto unlock;
a0bdcc59 6177
a0bdcc59
EBE		 6178 list_add_tail(&reporter->list, &devlink->reporter_list);
6179unlock:
b587bdaf 6180 mutex_unlock(&devlink->reporters_lock);
a0bdcc59
EBE		 6181 return reporter;
6182}
6183EXPORT_SYMBOL_GPL(devlink_health_reporter_create);
6184
3c5584bf
VT		 6185static void
6186devlink_health_reporter_free(struct devlink_health_reporter *reporter)
6187{
6188 mutex_destroy(&reporter->dump_lock);
6189 if (reporter->dump_fmsg)
6190 devlink_fmsg_free(reporter->dump_fmsg);
6191 kfree(reporter);
6192}
6193
6194static void
6195devlink_health_reporter_put(struct devlink_health_reporter *reporter)
6196{
6197 if (refcount_dec_and_test(&reporter->refcount))
6198 devlink_health_reporter_free(reporter);
6199}
6200
6201static void
6202__devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
6203{
6204 list_del(&reporter->list);
6205 devlink_health_reporter_put(reporter);
6206}
6207
a0bdcc59
EBE		 6208/**
6209 * devlink_health_reporter_destroy - destroy devlink health reporter
6210 *
6211 * @reporter: devlink health reporter to destroy
6212 */
6213void
6214devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
6215{
5d037b4d
IS		 6216 struct mutex *lock = &reporter->devlink->reporters_lock;
6217
6218 mutex_lock(lock);
3c5584bf 6219 __devlink_health_reporter_destroy(reporter);
5d037b4d 6220 mutex_unlock(lock);
a0bdcc59
EBE		 6221}
6222EXPORT_SYMBOL_GPL(devlink_health_reporter_destroy);
6223
15c724b9
VT		 6224/**
6225 * devlink_port_health_reporter_destroy - destroy devlink port health reporter
6226 *
6227 * @reporter: devlink health reporter to destroy
6228 */
6229void
6230devlink_port_health_reporter_destroy(struct devlink_health_reporter *reporter)
6231{
5d037b4d
IS		 6232 struct mutex *lock = &reporter->devlink_port->reporters_lock;
6233
6234 mutex_lock(lock);
15c724b9 6235 __devlink_health_reporter_destroy(reporter);
5d037b4d 6236 mutex_unlock(lock);
15c724b9
VT		 6237}
6238EXPORT_SYMBOL_GPL(devlink_port_health_reporter_destroy);
6239
6ec8b6cd
MS		 6240static int
6241devlink_nl_health_reporter_fill(struct sk_buff *msg,
6242 struct devlink *devlink,
6243 struct devlink_health_reporter *reporter,
6244 enum devlink_command cmd, u32 portid,
6245 u32 seq, int flags)
6246{
6247 struct nlattr *reporter_attr;
6248 void *hdr;
6249
6250 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
6251 if (!hdr)
6252 return -EMSGSIZE;
6253
6254 if (devlink_nl_put_handle(msg, devlink))
6255 goto genlmsg_cancel;
6256
f4f54166
VT		 6257 if (reporter->devlink_port) {
6258 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, reporter->devlink_port->index))
6259 goto genlmsg_cancel;
6260 }
6ec8b6cd
MS		 6261 reporter_attr = nla_nest_start_noflag(msg,
6262 DEVLINK_ATTR_HEALTH_REPORTER);
6263 if (!reporter_attr)
6264 goto genlmsg_cancel;
6265 if (nla_put_string(msg, DEVLINK_ATTR_HEALTH_REPORTER_NAME,
6266 reporter->ops->name))
6267 goto reporter_nest_cancel;
6268 if (nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_STATE,
6269 reporter->health_state))
6270 goto reporter_nest_cancel;
6271 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_ERR_COUNT,
6272 reporter->error_count, DEVLINK_ATTR_PAD))
6273 goto reporter_nest_cancel;
6274 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_RECOVER_COUNT,
6275 reporter->recovery_count, DEVLINK_ATTR_PAD))
6276 goto reporter_nest_cancel;
6277 if (reporter->ops->recover &&
6278 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD,
6279 reporter->graceful_period,
6280 DEVLINK_ATTR_PAD))
6281 goto reporter_nest_cancel;
6282 if (reporter->ops->recover &&
6283 nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER,
6284 reporter->auto_recover))
6285 goto reporter_nest_cancel;
6286 if (reporter->dump_fmsg &&
6287 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS,
6288 jiffies_to_msecs(reporter->dump_ts),
6289 DEVLINK_ATTR_PAD))
6290 goto reporter_nest_cancel;
6291 if (reporter->dump_fmsg &&
6292 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS_NS,
6293 reporter->dump_real_ts, DEVLINK_ATTR_PAD))
6294 goto reporter_nest_cancel;
48bb52c8
EBE		 6295 if (reporter->ops->dump &&
6296 nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP,
6297 reporter->auto_dump))
6298 goto reporter_nest_cancel;
6ec8b6cd
MS		 6299
6300 nla_nest_end(msg, reporter_attr);
6301 genlmsg_end(msg, hdr);
6302 return 0;
6303
6304reporter_nest_cancel:
6305 nla_nest_end(msg, reporter_attr);
6306genlmsg_cancel:
6307 genlmsg_cancel(msg, hdr);
6308 return -EMSGSIZE;
6309}
6310
6311static void devlink_recover_notify(struct devlink_health_reporter *reporter,
6312 enum devlink_command cmd)
6313{
6314 struct sk_buff *msg;
6315 int err;
6316
6317 WARN_ON(cmd != DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
6318
6319 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6320 if (!msg)
6321 return;
6322
6323 err = devlink_nl_health_reporter_fill(msg, reporter->devlink,
6324 reporter, cmd, 0, 0, 0);
6325 if (err) {
6326 nlmsg_free(msg);
6327 return;
6328 }
6329
6330 genlmsg_multicast_netns(&devlink_nl_family,
6331 devlink_net(reporter->devlink),
6332 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
6333}
6334
6181e5cb
VG		 6335void
6336devlink_health_reporter_recovery_done(struct devlink_health_reporter *reporter)
6337{
6338 reporter->recovery_count++;
6339 reporter->last_recovery_ts = jiffies;
6340}
6341EXPORT_SYMBOL_GPL(devlink_health_reporter_recovery_done);
6342
c8e1da0b
EBE		 6343static int
6344devlink_health_reporter_recover(struct devlink_health_reporter *reporter,
e7a98105 6345 void *priv_ctx, struct netlink_ext_ack *extack)
c8e1da0b
EBE		 6346{
6347 int err;
6348
40281820
JP		 6349 if (reporter->health_state == DEVLINK_HEALTH_REPORTER_STATE_HEALTHY)
6350 return 0;
6351
c8e1da0b
EBE		 6352 if (!reporter->ops->recover)
6353 return -EOPNOTSUPP;
6354
e7a98105 6355 err = reporter->ops->recover(reporter, priv_ctx, extack);
c8e1da0b
EBE		 6356 if (err)
6357 return err;
6358
6181e5cb 6359 devlink_health_reporter_recovery_done(reporter);
c8e1da0b 6360 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_HEALTHY;
6ec8b6cd 6361 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
c8e1da0b
EBE		 6362
6363 return 0;
6364}
6365
6366static void
6367devlink_health_dump_clear(struct devlink_health_reporter *reporter)
6368{
6369 if (!reporter->dump_fmsg)
6370 return;
6371 devlink_fmsg_free(reporter->dump_fmsg);
6372 reporter->dump_fmsg = NULL;
6373}
6374
6375static int devlink_health_do_dump(struct devlink_health_reporter *reporter,
e7a98105
JP		 6376 void *priv_ctx,
6377 struct netlink_ext_ack *extack)
c8e1da0b
EBE		 6378{
6379 int err;
6380
6381 if (!reporter->ops->dump)
6382 return 0;
6383
6384 if (reporter->dump_fmsg)
6385 return 0;
6386
6387 reporter->dump_fmsg = devlink_fmsg_alloc();
6388 if (!reporter->dump_fmsg) {
6389 err = -ENOMEM;
6390 return err;
6391 }
6392
6393 err = devlink_fmsg_obj_nest_start(reporter->dump_fmsg);
6394 if (err)
6395 goto dump_err;
6396
6397 err = reporter->ops->dump(reporter, reporter->dump_fmsg,
e7a98105 6398 priv_ctx, extack);
c8e1da0b
EBE		 6399 if (err)
6400 goto dump_err;
6401
6402 err = devlink_fmsg_obj_nest_end(reporter->dump_fmsg);
6403 if (err)
6404 goto dump_err;
6405
6406 reporter->dump_ts = jiffies;
d279505b 6407 reporter->dump_real_ts = ktime_get_real_ns();
c8e1da0b
EBE		 6408
6409 return 0;
6410
6411dump_err:
6412 devlink_health_dump_clear(reporter);
6413 return err;
6414}
6415
6416int devlink_health_report(struct devlink_health_reporter *reporter,
6417 const char *msg, void *priv_ctx)
6418{
a0a21adb 6419 enum devlink_health_reporter_state prev_health_state;
c8e1da0b 6420 struct devlink *devlink = reporter->devlink;
bea0c5c9 6421 unsigned long recover_ts_threshold;
c8e1da0b
EBE		 6422
6423 /* write a log message of the current error */
6424 WARN_ON(!msg);
6425 trace_devlink_health_report(devlink, reporter->ops->name, msg);
6426 reporter->error_count++;
a0a21adb
EBE		 6427 prev_health_state = reporter->health_state;
6428 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
6ec8b6cd 6429 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
c8e1da0b
EBE		 6430
6431 /* abort if the previous error wasn't recovered */
bea0c5c9
AL		 6432 recover_ts_threshold = reporter->last_recovery_ts +
6433 msecs_to_jiffies(reporter->graceful_period);
c8e1da0b 6434 if (reporter->auto_recover &&
a0a21adb 6435 (prev_health_state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY ||
bea0c5c9
AL		 6436 (reporter->last_recovery_ts && reporter->recovery_count &&
6437 time_is_after_jiffies(recover_ts_threshold)))) {
c8e1da0b
EBE		 6438 trace_devlink_health_recover_aborted(devlink,
6439 reporter->ops->name,
6440 reporter->health_state,
6441 jiffies -
6442 reporter->last_recovery_ts);
6443 return -ECANCELED;
6444 }
6445
6446 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
6447
48bb52c8
EBE		 6448 if (reporter->auto_dump) {
6449 mutex_lock(&reporter->dump_lock);
6450 /* store current dump of current error, for later analysis */
6451 devlink_health_do_dump(reporter, priv_ctx, NULL);
6452 mutex_unlock(&reporter->dump_lock);
6453 }
c8e1da0b
EBE		 6454
6455 if (reporter->auto_recover)
e7a98105
JP		 6456 return devlink_health_reporter_recover(reporter,
6457 priv_ctx, NULL);
c8e1da0b
EBE		 6458
6459 return 0;
6460}
6461EXPORT_SYMBOL_GPL(devlink_health_report);
6462
7afe335a 6463static struct devlink_health_reporter *
e44ef4e4
AL		 6464devlink_health_reporter_get_from_attrs(struct devlink *devlink,
6465 struct nlattr **attrs)
7afe335a 6466{
b587bdaf 6467 struct devlink_health_reporter *reporter;
f4f54166 6468 struct devlink_port *devlink_port;
7afe335a
EBE		 6469 char *reporter_name;
6470
e44ef4e4 6471 if (!attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME])
7afe335a
EBE		 6472 return NULL;
6473
e44ef4e4 6474 reporter_name = nla_data(attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME]);
f4f54166
VT		 6475 devlink_port = devlink_port_get_from_attrs(devlink, attrs);
6476 if (IS_ERR(devlink_port)) {
6477 mutex_lock(&devlink->reporters_lock);
6478 reporter = devlink_health_reporter_find_by_name(devlink, reporter_name);
6479 if (reporter)
6480 refcount_inc(&reporter->refcount);
6481 mutex_unlock(&devlink->reporters_lock);
6482 } else {
6483 mutex_lock(&devlink_port->reporters_lock);
6484 reporter = devlink_port_health_reporter_find_by_name(devlink_port, reporter_name);
6485 if (reporter)
6486 refcount_inc(&reporter->refcount);
6487 mutex_unlock(&devlink_port->reporters_lock);
6488 }
6489
b587bdaf
MS		 6490 return reporter;
6491}
6492
e44ef4e4
AL		 6493static struct devlink_health_reporter *
6494devlink_health_reporter_get_from_info(struct devlink *devlink,
6495 struct genl_info *info)
6496{
6497 return devlink_health_reporter_get_from_attrs(devlink, info->attrs);
6498}
6499
6500static struct devlink_health_reporter *
6501devlink_health_reporter_get_from_cb(struct netlink_callback *cb)
6502{
ee85da53 6503 const struct genl_dumpit_info *info = genl_dumpit_info(cb);
e44ef4e4 6504 struct devlink_health_reporter *reporter;
ee85da53 6505 struct nlattr **attrs = info->attrs;
e44ef4e4 6506 struct devlink *devlink;
e44ef4e4
AL		 6507
6508 mutex_lock(&devlink_mutex);
6509 devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
6510 if (IS_ERR(devlink))
6511 goto unlock;
6512
6513 reporter = devlink_health_reporter_get_from_attrs(devlink, attrs);
6514 mutex_unlock(&devlink_mutex);
e44ef4e4
AL		 6515 return reporter;
6516unlock:
6517 mutex_unlock(&devlink_mutex);
e44ef4e4
AL		 6518 return NULL;
6519}
6520
97ff3bd3
VG		 6521void
6522devlink_health_reporter_state_update(struct devlink_health_reporter *reporter,
6523 enum devlink_health_reporter_state state)
6524{
6525 if (WARN_ON(state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY &&
6526 state != DEVLINK_HEALTH_REPORTER_STATE_ERROR))
6527 return;
6528
6529 if (reporter->health_state == state)
6530 return;
6531
6532 reporter->health_state = state;
6533 trace_devlink_health_reporter_state_update(reporter->devlink,
6534 reporter->ops->name, state);
6535 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
6536}
6537EXPORT_SYMBOL_GPL(devlink_health_reporter_state_update);
6538
7afe335a
EBE		 6539static int devlink_nl_cmd_health_reporter_get_doit(struct sk_buff *skb,
6540 struct genl_info *info)
6541{
6542 struct devlink *devlink = info->user_ptr[0];
6543 struct devlink_health_reporter *reporter;
6544 struct sk_buff *msg;
6545 int err;
6546
6547 reporter = devlink_health_reporter_get_from_info(devlink, info);
6548 if (!reporter)
6549 return -EINVAL;
6550
6551 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
b587bdaf
MS		 6552 if (!msg) {
6553 err = -ENOMEM;
6554 goto out;
6555 }
7afe335a
EBE		 6556
6557 err = devlink_nl_health_reporter_fill(msg, devlink, reporter,
6558 DEVLINK_CMD_HEALTH_REPORTER_GET,
6559 info->snd_portid, info->snd_seq,
6560 0);
6561 if (err) {
6562 nlmsg_free(msg);
b587bdaf 6563 goto out;
7afe335a
EBE		 6564 }
6565
b587bdaf
MS		 6566 err = genlmsg_reply(msg, info);
6567out:
6568 devlink_health_reporter_put(reporter);
6569 return err;
7afe335a
EBE		 6570}
6571
6572static int
6573devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg,
6574 struct netlink_callback *cb)
6575{
6576 struct devlink_health_reporter *reporter;
f4f54166 6577 struct devlink_port *port;
7afe335a
EBE		 6578 struct devlink *devlink;
6579 int start = cb->args[0];
6580 int idx = 0;
6581 int err;
6582
6583 mutex_lock(&devlink_mutex);
6584 list_for_each_entry(devlink, &devlink_list, list) {
6585 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
6586 continue;
b587bdaf 6587 mutex_lock(&devlink->reporters_lock);
7afe335a
EBE		 6588 list_for_each_entry(reporter, &devlink->reporter_list,
6589 list) {
6590 if (idx < start) {
6591 idx++;
6592 continue;
6593 }
6594 err = devlink_nl_health_reporter_fill(msg, devlink,
6595 reporter,
6596 DEVLINK_CMD_HEALTH_REPORTER_GET,
6597 NETLINK_CB(cb->skb).portid,
6598 cb->nlh->nlmsg_seq,
6599 NLM_F_MULTI);
6600 if (err) {
b587bdaf 6601 mutex_unlock(&devlink->reporters_lock);
7afe335a
EBE		 6602 goto out;
6603 }
6604 idx++;
6605 }
b587bdaf 6606 mutex_unlock(&devlink->reporters_lock);
7afe335a 6607 }
f4f54166
VT		 6608
6609 list_for_each_entry(devlink, &devlink_list, list) {
6610 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
6611 continue;
5d080b50 6612 mutex_lock(&devlink->lock);
f4f54166
VT		 6613 list_for_each_entry(port, &devlink->port_list, list) {
6614 mutex_lock(&port->reporters_lock);
6615 list_for_each_entry(reporter, &port->reporter_list, list) {
6616 if (idx < start) {
6617 idx++;
6618 continue;
6619 }
6620 err = devlink_nl_health_reporter_fill(msg, devlink, reporter,
6621 DEVLINK_CMD_HEALTH_REPORTER_GET,
6622 NETLINK_CB(cb->skb).portid,
6623 cb->nlh->nlmsg_seq,
6624 NLM_F_MULTI);
6625 if (err) {
6626 mutex_unlock(&port->reporters_lock);
5d080b50 6627 mutex_unlock(&devlink->lock);
f4f54166
VT		 6628 goto out;
6629 }
6630 idx++;
6631 }
6632 mutex_unlock(&port->reporters_lock);
6633 }
5d080b50 6634 mutex_unlock(&devlink->lock);
f4f54166 6635 }
7afe335a
EBE		 6636out:
6637 mutex_unlock(&devlink_mutex);
6638
6639 cb->args[0] = idx;
6640 return msg->len;
6641}
6642
a1e55ec0
EBE		 6643static int
6644devlink_nl_cmd_health_reporter_set_doit(struct sk_buff *skb,
6645 struct genl_info *info)
6646{
6647 struct devlink *devlink = info->user_ptr[0];
6648 struct devlink_health_reporter *reporter;
b587bdaf 6649 int err;
a1e55ec0
EBE		 6650
6651 reporter = devlink_health_reporter_get_from_info(devlink, info);
6652 if (!reporter)
6653 return -EINVAL;
6654
6655 if (!reporter->ops->recover &&
6656 (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] ||
b587bdaf
MS		 6657 info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])) {
6658 err = -EOPNOTSUPP;
6659 goto out;
6660 }
48bb52c8
EBE		 6661 if (!reporter->ops->dump &&
6662 info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]) {
6663 err = -EOPNOTSUPP;
6664 goto out;
6665 }
a1e55ec0
EBE		 6666
6667 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD])
6668 reporter->graceful_period =
6669 nla_get_u64(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD]);
6670
6671 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])
6672 reporter->auto_recover =
6673 nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER]);
6674
48bb52c8
EBE		 6675 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP])
6676 reporter->auto_dump =
6677 nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]);
6678
b587bdaf 6679 devlink_health_reporter_put(reporter);
a1e55ec0 6680 return 0;
b587bdaf
MS		 6681out:
6682 devlink_health_reporter_put(reporter);
6683 return err;
a1e55ec0
EBE		 6684}
6685
20a0943a
EBE		 6686static int devlink_nl_cmd_health_reporter_recover_doit(struct sk_buff *skb,
6687 struct genl_info *info)
6688{
6689 struct devlink *devlink = info->user_ptr[0];
6690 struct devlink_health_reporter *reporter;
b587bdaf 6691 int err;
20a0943a
EBE		 6692
6693 reporter = devlink_health_reporter_get_from_info(devlink, info);
6694 if (!reporter)
6695 return -EINVAL;
6696
e7a98105 6697 err = devlink_health_reporter_recover(reporter, NULL, info->extack);
b587bdaf
MS		 6698
6699 devlink_health_reporter_put(reporter);
6700 return err;
20a0943a
EBE		 6701}
6702
fca42a27
EBE		 6703static int devlink_nl_cmd_health_reporter_diagnose_doit(struct sk_buff *skb,
6704 struct genl_info *info)
6705{
6706 struct devlink *devlink = info->user_ptr[0];
6707 struct devlink_health_reporter *reporter;
6708 struct devlink_fmsg *fmsg;
6709 int err;
6710
6711 reporter = devlink_health_reporter_get_from_info(devlink, info);
6712 if (!reporter)
6713 return -EINVAL;
6714
b587bdaf
MS		 6715 if (!reporter->ops->diagnose) {
6716 devlink_health_reporter_put(reporter);
fca42a27 6717 return -EOPNOTSUPP;
b587bdaf 6718 }
fca42a27
EBE		 6719
6720 fmsg = devlink_fmsg_alloc();
b587bdaf
MS		 6721 if (!fmsg) {
6722 devlink_health_reporter_put(reporter);
fca42a27 6723 return -ENOMEM;
b587bdaf 6724 }
fca42a27
EBE		 6725
6726 err = devlink_fmsg_obj_nest_start(fmsg);
6727 if (err)
6728 goto out;
6729
e7a98105 6730 err = reporter->ops->diagnose(reporter, fmsg, info->extack);
fca42a27
EBE		 6731 if (err)
6732 goto out;
6733
6734 err = devlink_fmsg_obj_nest_end(fmsg);
6735 if (err)
6736 goto out;
6737
6738 err = devlink_fmsg_snd(fmsg, info,
6739 DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE, 0);
6740
6741out:
6742 devlink_fmsg_free(fmsg);
b587bdaf 6743 devlink_health_reporter_put(reporter);
fca42a27
EBE		 6744 return err;
6745}
6746
e44ef4e4
AL		 6747static int
6748devlink_nl_cmd_health_reporter_dump_get_dumpit(struct sk_buff *skb,
6749 struct netlink_callback *cb)
35455e23 6750{
35455e23 6751 struct devlink_health_reporter *reporter;
e44ef4e4 6752 u64 start = cb->args[0];
35455e23
EBE		 6753 int err;
6754
e44ef4e4 6755 reporter = devlink_health_reporter_get_from_cb(cb);
35455e23
EBE		 6756 if (!reporter)
6757 return -EINVAL;
6758
b587bdaf 6759 if (!reporter->ops->dump) {
e44ef4e4
AL		 6760 err = -EOPNOTSUPP;
6761 goto out;
b587bdaf 6762 }
35455e23 6763 mutex_lock(&reporter->dump_lock);
e44ef4e4 6764 if (!start) {
e7a98105 6765 err = devlink_health_do_dump(reporter, NULL, cb->extack);
e44ef4e4
AL		 6766 if (err)
6767 goto unlock;
6768 cb->args[1] = reporter->dump_ts;
6769 }
6770 if (!reporter->dump_fmsg || cb->args[1] != reporter->dump_ts) {
6771 NL_SET_ERR_MSG_MOD(cb->extack, "Dump trampled, please retry");
6772 err = -EAGAIN;
6773 goto unlock;
6774 }
35455e23 6775
e44ef4e4
AL		 6776 err = devlink_fmsg_dumpit(reporter->dump_fmsg, skb, cb,
6777 DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET);
6778unlock:
35455e23 6779 mutex_unlock(&reporter->dump_lock);
e44ef4e4 6780out:
b587bdaf 6781 devlink_health_reporter_put(reporter);
35455e23
EBE		 6782 return err;
6783}
6784
6785static int
6786devlink_nl_cmd_health_reporter_dump_clear_doit(struct sk_buff *skb,
6787 struct genl_info *info)
6788{
6789 struct devlink *devlink = info->user_ptr[0];
6790 struct devlink_health_reporter *reporter;
6791
6792 reporter = devlink_health_reporter_get_from_info(devlink, info);
6793 if (!reporter)
6794 return -EINVAL;
6795
b587bdaf
MS		 6796 if (!reporter->ops->dump) {
6797 devlink_health_reporter_put(reporter);
35455e23 6798 return -EOPNOTSUPP;
b587bdaf 6799 }
35455e23
EBE		 6800
6801 mutex_lock(&reporter->dump_lock);
6802 devlink_health_dump_clear(reporter);
6803 mutex_unlock(&reporter->dump_lock);
b587bdaf 6804 devlink_health_reporter_put(reporter);
35455e23
EBE		 6805 return 0;
6806}
6807
e2ce94dc
JP		 6808static int devlink_nl_cmd_health_reporter_test_doit(struct sk_buff *skb,
6809 struct genl_info *info)
6810{
6811 struct devlink *devlink = info->user_ptr[0];
6812 struct devlink_health_reporter *reporter;
6813 int err;
6814
6815 reporter = devlink_health_reporter_get_from_info(devlink, info);
6816 if (!reporter)
6817 return -EINVAL;
6818
6819 if (!reporter->ops->test) {
6820 devlink_health_reporter_put(reporter);
6821 return -EOPNOTSUPP;
6822 }
6823
6824 err = reporter->ops->test(reporter, info->extack);
6825
6826 devlink_health_reporter_put(reporter);
6827 return err;
6828}
6829
0f420b6c
IS		 6830struct devlink_stats {
6831 u64 rx_bytes;
6832 u64 rx_packets;
6833 struct u64_stats_sync syncp;
6834};
6835
1e8c6619
IS		 6836/**
6837 * struct devlink_trap_policer_item - Packet trap policer attributes.
6838 * @policer: Immutable packet trap policer attributes.
6839 * @rate: Rate in packets / sec.
6840 * @burst: Burst size in packets.
6841 * @list: trap_policer_list member.
6842 *
6843 * Describes packet trap policer attributes. Created by devlink during trap
6844 * policer registration.
6845 */
6846struct devlink_trap_policer_item {
6847 const struct devlink_trap_policer *policer;
6848 u64 rate;
6849 u64 burst;
6850 struct list_head list;
6851};
6852
0f420b6c
IS		 6853/**
6854 * struct devlink_trap_group_item - Packet trap group attributes.
6855 * @group: Immutable packet trap group attributes.
f9f54392 6856 * @policer_item: Associated policer item. Can be NULL.
0f420b6c
IS		 6857 * @list: trap_group_list member.
6858 * @stats: Trap group statistics.
6859 *
6860 * Describes packet trap group attributes. Created by devlink during trap
a09b37fc 6861 * group registration.
0f420b6c
IS		 6862 */
6863struct devlink_trap_group_item {
6864 const struct devlink_trap_group *group;
f9f54392 6865 struct devlink_trap_policer_item *policer_item;
0f420b6c
IS		 6866 struct list_head list;
6867 struct devlink_stats __percpu *stats;
6868};
6869
6870/**
6871 * struct devlink_trap_item - Packet trap attributes.
6872 * @trap: Immutable packet trap attributes.
6873 * @group_item: Associated group item.
6874 * @list: trap_list member.
6875 * @action: Trap action.
6876 * @stats: Trap statistics.
6877 * @priv: Driver private information.
6878 *
6879 * Describes both mutable and immutable packet trap attributes. Created by
6880 * devlink during trap registration and used for all trap related operations.
6881 */
6882struct devlink_trap_item {
6883 const struct devlink_trap *trap;
6884 struct devlink_trap_group_item *group_item;
6885 struct list_head list;
6886 enum devlink_trap_action action;
6887 struct devlink_stats __percpu *stats;
6888 void *priv;
6889};
6890
1e8c6619
IS		 6891static struct devlink_trap_policer_item *
6892devlink_trap_policer_item_lookup(struct devlink *devlink, u32 id)
6893{
6894 struct devlink_trap_policer_item *policer_item;
6895
6896 list_for_each_entry(policer_item, &devlink->trap_policer_list, list) {
6897 if (policer_item->policer->id == id)
6898 return policer_item;
6899 }
6900
6901 return NULL;
6902}
6903
0f420b6c
IS		 6904static struct devlink_trap_item *
6905devlink_trap_item_lookup(struct devlink *devlink, const char *name)
6906{
6907 struct devlink_trap_item *trap_item;
6908
6909 list_for_each_entry(trap_item, &devlink->trap_list, list) {
6910 if (!strcmp(trap_item->trap->name, name))
6911 return trap_item;
6912 }
6913
6914 return NULL;
6915}
6916
6917static struct devlink_trap_item *
6918devlink_trap_item_get_from_info(struct devlink *devlink,
6919 struct genl_info *info)
6920{
6921 struct nlattr *attr;
6922
6923 if (!info->attrs[DEVLINK_ATTR_TRAP_NAME])
6924 return NULL;
6925 attr = info->attrs[DEVLINK_ATTR_TRAP_NAME];
6926
6927 return devlink_trap_item_lookup(devlink, nla_data(attr));
6928}
6929
6930static int
6931devlink_trap_action_get_from_info(struct genl_info *info,
6932 enum devlink_trap_action *p_trap_action)
6933{
6934 u8 val;
6935
6936 val = nla_get_u8(info->attrs[DEVLINK_ATTR_TRAP_ACTION]);
6937 switch (val) {
df561f66
GS		 6938 case DEVLINK_TRAP_ACTION_DROP:
6939 case DEVLINK_TRAP_ACTION_TRAP:
9eefeabe 6940 case DEVLINK_TRAP_ACTION_MIRROR:
0f420b6c
IS		 6941 *p_trap_action = val;
6942 break;
6943 default:
6944 return -EINVAL;
6945 }
6946
6947 return 0;
6948}
6949
6950static int devlink_trap_metadata_put(struct sk_buff *msg,
6951 const struct devlink_trap *trap)
6952{
6953 struct nlattr *attr;
6954
6955 attr = nla_nest_start(msg, DEVLINK_ATTR_TRAP_METADATA);
6956 if (!attr)
6957 return -EMSGSIZE;
6958
6959 if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_IN_PORT) &&
6960 nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_IN_PORT))
6961 goto nla_put_failure;
85b0589e
JP		 6962 if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_FA_COOKIE) &&
6963 nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_FA_COOKIE))
6964 goto nla_put_failure;
0f420b6c
IS		 6965
6966 nla_nest_end(msg, attr);
6967
6968 return 0;
6969
6970nla_put_failure:
6971 nla_nest_cancel(msg, attr);
6972 return -EMSGSIZE;
6973}
6974
6975static void devlink_trap_stats_read(struct devlink_stats __percpu *trap_stats,
6976 struct devlink_stats *stats)
6977{
6978 int i;
6979
6980 memset(stats, 0, sizeof(*stats));
6981 for_each_possible_cpu(i) {
6982 struct devlink_stats *cpu_stats;
6983 u64 rx_packets, rx_bytes;
6984 unsigned int start;
6985
6986 cpu_stats = per_cpu_ptr(trap_stats, i);
6987 do {
6988 start = u64_stats_fetch_begin_irq(&cpu_stats->syncp);
6989 rx_packets = cpu_stats->rx_packets;
6990 rx_bytes = cpu_stats->rx_bytes;
6991 } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start));
6992
6993 stats->rx_packets += rx_packets;
6994 stats->rx_bytes += rx_bytes;
6995 }
6996}
6997
6998static int devlink_trap_stats_put(struct sk_buff *msg,
6999 struct devlink_stats __percpu *trap_stats)
7000{
7001 struct devlink_stats stats;
7002 struct nlattr *attr;
7003
7004 devlink_trap_stats_read(trap_stats, &stats);
7005
7006 attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
7007 if (!attr)
7008 return -EMSGSIZE;
7009
7010 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_PACKETS,
7011 stats.rx_packets, DEVLINK_ATTR_PAD))
7012 goto nla_put_failure;
7013
7014 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_BYTES,
7015 stats.rx_bytes, DEVLINK_ATTR_PAD))
7016 goto nla_put_failure;
7017
7018 nla_nest_end(msg, attr);
7019
7020 return 0;
7021
7022nla_put_failure:
7023 nla_nest_cancel(msg, attr);
7024 return -EMSGSIZE;
7025}
7026
7027static int devlink_nl_trap_fill(struct sk_buff *msg, struct devlink *devlink,
7028 const struct devlink_trap_item *trap_item,
7029 enum devlink_command cmd, u32 portid, u32 seq,
7030 int flags)
7031{
7032 struct devlink_trap_group_item *group_item = trap_item->group_item;
7033 void *hdr;
7034 int err;
7035
7036 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
7037 if (!hdr)
7038 return -EMSGSIZE;
7039
7040 if (devlink_nl_put_handle(msg, devlink))
7041 goto nla_put_failure;
7042
7043 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
7044 group_item->group->name))
7045 goto nla_put_failure;
7046
7047 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_NAME, trap_item->trap->name))
7048 goto nla_put_failure;
7049
7050 if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_TYPE, trap_item->trap->type))
7051 goto nla_put_failure;
7052
7053 if (trap_item->trap->generic &&
7054 nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
7055 goto nla_put_failure;
7056
7057 if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_ACTION, trap_item->action))
7058 goto nla_put_failure;
7059
7060 err = devlink_trap_metadata_put(msg, trap_item->trap);
7061 if (err)
7062 goto nla_put_failure;
7063
7064 err = devlink_trap_stats_put(msg, trap_item->stats);
7065 if (err)
7066 goto nla_put_failure;
7067
7068 genlmsg_end(msg, hdr);
7069
7070 return 0;
7071
7072nla_put_failure:
7073 genlmsg_cancel(msg, hdr);
7074 return -EMSGSIZE;
7075}
7076
7077static int devlink_nl_cmd_trap_get_doit(struct sk_buff *skb,
7078 struct genl_info *info)
7079{
7080 struct netlink_ext_ack *extack = info->extack;
7081 struct devlink *devlink = info->user_ptr[0];
7082 struct devlink_trap_item *trap_item;
7083 struct sk_buff *msg;
7084 int err;
7085
7086 if (list_empty(&devlink->trap_list))
7087 return -EOPNOTSUPP;
7088
7089 trap_item = devlink_trap_item_get_from_info(devlink, info);
7090 if (!trap_item) {
7091 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
7092 return -ENOENT;
7093 }
7094
7095 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7096 if (!msg)
7097 return -ENOMEM;
7098
7099 err = devlink_nl_trap_fill(msg, devlink, trap_item,
7100 DEVLINK_CMD_TRAP_NEW, info->snd_portid,
7101 info->snd_seq, 0);
7102 if (err)
7103 goto err_trap_fill;
7104
7105 return genlmsg_reply(msg, info);
7106
7107err_trap_fill:
7108 nlmsg_free(msg);
7109 return err;
7110}
7111
7112static int devlink_nl_cmd_trap_get_dumpit(struct sk_buff *msg,
7113 struct netlink_callback *cb)
7114{
7115 struct devlink_trap_item *trap_item;
7116 struct devlink *devlink;
7117 int start = cb->args[0];
7118 int idx = 0;
7119 int err;
7120
7121 mutex_lock(&devlink_mutex);
7122 list_for_each_entry(devlink, &devlink_list, list) {
7123 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
7124 continue;
7125 mutex_lock(&devlink->lock);
7126 list_for_each_entry(trap_item, &devlink->trap_list, list) {
7127 if (idx < start) {
7128 idx++;
7129 continue;
7130 }
7131 err = devlink_nl_trap_fill(msg, devlink, trap_item,
7132 DEVLINK_CMD_TRAP_NEW,
7133 NETLINK_CB(cb->skb).portid,
7134 cb->nlh->nlmsg_seq,
7135 NLM_F_MULTI);
7136 if (err) {
7137 mutex_unlock(&devlink->lock);
7138 goto out;
7139 }
7140 idx++;
7141 }
7142 mutex_unlock(&devlink->lock);
7143 }
7144out:
7145 mutex_unlock(&devlink_mutex);
7146
7147 cb->args[0] = idx;
7148 return msg->len;
7149}
7150
7151static int __devlink_trap_action_set(struct devlink *devlink,
7152 struct devlink_trap_item *trap_item,
7153 enum devlink_trap_action trap_action,
7154 struct netlink_ext_ack *extack)
7155{
7156 int err;
7157
7158 if (trap_item->action != trap_action &&
7159 trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP) {
7160 NL_SET_ERR_MSG_MOD(extack, "Cannot change action of non-drop traps. Skipping");
7161 return 0;
7162 }
7163
7164 err = devlink->ops->trap_action_set(devlink, trap_item->trap,
c88e11e0 7165 trap_action, extack);
0f420b6c
IS		 7166 if (err)
7167 return err;
7168
7169 trap_item->action = trap_action;
7170
7171 return 0;
7172}
7173
7174static int devlink_trap_action_set(struct devlink *devlink,
7175 struct devlink_trap_item *trap_item,
7176 struct genl_info *info)
7177{
7178 enum devlink_trap_action trap_action;
7179 int err;
7180
7181 if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
7182 return 0;
7183
7184 err = devlink_trap_action_get_from_info(info, &trap_action);
7185 if (err) {
7186 NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
7187 return -EINVAL;
7188 }
7189
7190 return __devlink_trap_action_set(devlink, trap_item, trap_action,
7191 info->extack);
7192}
7193
7194static int devlink_nl_cmd_trap_set_doit(struct sk_buff *skb,
7195 struct genl_info *info)
7196{
7197 struct netlink_ext_ack *extack = info->extack;
7198 struct devlink *devlink = info->user_ptr[0];
7199 struct devlink_trap_item *trap_item;
0f420b6c
IS		 7200
7201 if (list_empty(&devlink->trap_list))
7202 return -EOPNOTSUPP;
7203
7204 trap_item = devlink_trap_item_get_from_info(devlink, info);
7205 if (!trap_item) {
7206 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
7207 return -ENOENT;
7208 }
7209
8daa76a5 7210 return devlink_trap_action_set(devlink, trap_item, info);
0f420b6c
IS		 7211}
7212
7213static struct devlink_trap_group_item *
7214devlink_trap_group_item_lookup(struct devlink *devlink, const char *name)
7215{
7216 struct devlink_trap_group_item *group_item;
7217
7218 list_for_each_entry(group_item, &devlink->trap_group_list, list) {
7219 if (!strcmp(group_item->group->name, name))
7220 return group_item;
7221 }
7222
7223 return NULL;
7224}
7225
107f1678
IS		 7226static struct devlink_trap_group_item *
7227devlink_trap_group_item_lookup_by_id(struct devlink *devlink, u16 id)
7228{
7229 struct devlink_trap_group_item *group_item;
7230
7231 list_for_each_entry(group_item, &devlink->trap_group_list, list) {
7232 if (group_item->group->id == id)
7233 return group_item;
7234 }
7235
7236 return NULL;
7237}
7238
0f420b6c
IS		 7239static struct devlink_trap_group_item *
7240devlink_trap_group_item_get_from_info(struct devlink *devlink,
7241 struct genl_info *info)
7242{
7243 char *name;
7244
7245 if (!info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME])
7246 return NULL;
7247 name = nla_data(info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME]);
7248
7249 return devlink_trap_group_item_lookup(devlink, name);
7250}
7251
7252static int
7253devlink_nl_trap_group_fill(struct sk_buff *msg, struct devlink *devlink,
7254 const struct devlink_trap_group_item *group_item,
7255 enum devlink_command cmd, u32 portid, u32 seq,
7256 int flags)
7257{
7258 void *hdr;
7259 int err;
7260
7261 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
7262 if (!hdr)
7263 return -EMSGSIZE;
7264
7265 if (devlink_nl_put_handle(msg, devlink))
7266 goto nla_put_failure;
7267
7268 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
7269 group_item->group->name))
7270 goto nla_put_failure;
7271
7272 if (group_item->group->generic &&
7273 nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
7274 goto nla_put_failure;
7275
f9f54392
IS		 7276 if (group_item->policer_item &&
7277 nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID,
7278 group_item->policer_item->policer->id))
7279 goto nla_put_failure;
7280
0f420b6c
IS		 7281 err = devlink_trap_stats_put(msg, group_item->stats);
7282 if (err)
7283 goto nla_put_failure;
7284
7285 genlmsg_end(msg, hdr);
7286
7287 return 0;
7288
7289nla_put_failure:
7290 genlmsg_cancel(msg, hdr);
7291 return -EMSGSIZE;
7292}
7293
7294static int devlink_nl_cmd_trap_group_get_doit(struct sk_buff *skb,
7295 struct genl_info *info)
7296{
7297 struct netlink_ext_ack *extack = info->extack;
7298 struct devlink *devlink = info->user_ptr[0];
7299 struct devlink_trap_group_item *group_item;
7300 struct sk_buff *msg;
7301 int err;
7302
7303 if (list_empty(&devlink->trap_group_list))
7304 return -EOPNOTSUPP;
7305
7306 group_item = devlink_trap_group_item_get_from_info(devlink, info);
7307 if (!group_item) {
7308 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
7309 return -ENOENT;
7310 }
7311
7312 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7313 if (!msg)
7314 return -ENOMEM;
7315
7316 err = devlink_nl_trap_group_fill(msg, devlink, group_item,
7317 DEVLINK_CMD_TRAP_GROUP_NEW,
7318 info->snd_portid, info->snd_seq, 0);
7319 if (err)
7320 goto err_trap_group_fill;
7321
7322 return genlmsg_reply(msg, info);
7323
7324err_trap_group_fill:
7325 nlmsg_free(msg);
7326 return err;
7327}
7328
7329static int devlink_nl_cmd_trap_group_get_dumpit(struct sk_buff *msg,
7330 struct netlink_callback *cb)
7331{
7332 enum devlink_command cmd = DEVLINK_CMD_TRAP_GROUP_NEW;
7333 struct devlink_trap_group_item *group_item;
7334 u32 portid = NETLINK_CB(cb->skb).portid;
7335 struct devlink *devlink;
7336 int start = cb->args[0];
7337 int idx = 0;
7338 int err;
7339
7340 mutex_lock(&devlink_mutex);
7341 list_for_each_entry(devlink, &devlink_list, list) {
7342 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
7343 continue;
7344 mutex_lock(&devlink->lock);
7345 list_for_each_entry(group_item, &devlink->trap_group_list,
7346 list) {
7347 if (idx < start) {
7348 idx++;
7349 continue;
7350 }
7351 err = devlink_nl_trap_group_fill(msg, devlink,
7352 group_item, cmd,
7353 portid,
7354 cb->nlh->nlmsg_seq,
7355 NLM_F_MULTI);
7356 if (err) {
7357 mutex_unlock(&devlink->lock);
7358 goto out;
7359 }
7360 idx++;
7361 }
7362 mutex_unlock(&devlink->lock);
7363 }
7364out:
7365 mutex_unlock(&devlink_mutex);
7366
7367 cb->args[0] = idx;
7368 return msg->len;
7369}
7370
7371static int
7372__devlink_trap_group_action_set(struct devlink *devlink,
7373 struct devlink_trap_group_item *group_item,
7374 enum devlink_trap_action trap_action,
7375 struct netlink_ext_ack *extack)
7376{
7377 const char *group_name = group_item->group->name;
7378 struct devlink_trap_item *trap_item;
7379 int err;
7380
c50bf2be
IC		 7381 if (devlink->ops->trap_group_action_set) {
7382 err = devlink->ops->trap_group_action_set(devlink, group_item->group,
7383 trap_action, extack);
7384 if (err)
7385 return err;
7386
7387 list_for_each_entry(trap_item, &devlink->trap_list, list) {
7388 if (strcmp(trap_item->group_item->group->name, group_name))
7389 continue;
7390 if (trap_item->action != trap_action &&
7391 trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP)
7392 continue;
7393 trap_item->action = trap_action;
7394 }
7395
7396 return 0;
7397 }
7398
0f420b6c 7399 list_for_each_entry(trap_item, &devlink->trap_list, list) {
107f1678 7400 if (strcmp(trap_item->group_item->group->name, group_name))
0f420b6c
IS		 7401 continue;
7402 err = __devlink_trap_action_set(devlink, trap_item,
7403 trap_action, extack);
7404 if (err)
7405 return err;
7406 }
7407
7408 return 0;
7409}
7410
7411static int
7412devlink_trap_group_action_set(struct devlink *devlink,
7413 struct devlink_trap_group_item *group_item,
c064875a 7414 struct genl_info *info, bool *p_modified)
0f420b6c
IS		 7415{
7416 enum devlink_trap_action trap_action;
7417 int err;
7418
7419 if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
7420 return 0;
7421
7422 err = devlink_trap_action_get_from_info(info, &trap_action);
7423 if (err) {
7424 NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
7425 return -EINVAL;
7426 }
7427
7428 err = __devlink_trap_group_action_set(devlink, group_item, trap_action,
7429 info->extack);
7430 if (err)
7431 return err;
7432
c064875a
IS		 7433 *p_modified = true;
7434
7435 return 0;
7436}
7437
7438static int devlink_trap_group_set(struct devlink *devlink,
7439 struct devlink_trap_group_item *group_item,
7440 struct genl_info *info)
7441{
7442 struct devlink_trap_policer_item *policer_item;
7443 struct netlink_ext_ack *extack = info->extack;
7444 const struct devlink_trap_policer *policer;
7445 struct nlattr **attrs = info->attrs;
7446 int err;
7447
7448 if (!attrs[DEVLINK_ATTR_TRAP_POLICER_ID])
7449 return 0;
7450
7451 if (!devlink->ops->trap_group_set)
7452 return -EOPNOTSUPP;
7453
7454 policer_item = group_item->policer_item;
7455 if (attrs[DEVLINK_ATTR_TRAP_POLICER_ID]) {
7456 u32 policer_id;
7457
7458 policer_id = nla_get_u32(attrs[DEVLINK_ATTR_TRAP_POLICER_ID]);
7459 policer_item = devlink_trap_policer_item_lookup(devlink,
7460 policer_id);
7461 if (policer_id && !policer_item) {
7462 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
7463 return -ENOENT;
7464 }
7465 }
7466 policer = policer_item ? policer_item->policer : NULL;
7467
c88e11e0
IS		 7468 err = devlink->ops->trap_group_set(devlink, group_item->group, policer,
7469 extack);
c064875a
IS		 7470 if (err)
7471 return err;
7472
7473 group_item->policer_item = policer_item;
7474
0f420b6c
IS		 7475 return 0;
7476}
7477
7478static int devlink_nl_cmd_trap_group_set_doit(struct sk_buff *skb,
7479 struct genl_info *info)
7480{
7481 struct netlink_ext_ack *extack = info->extack;
7482 struct devlink *devlink = info->user_ptr[0];
7483 struct devlink_trap_group_item *group_item;
c064875a 7484 bool modified = false;
0f420b6c
IS		 7485 int err;
7486
7487 if (list_empty(&devlink->trap_group_list))
7488 return -EOPNOTSUPP;
7489
7490 group_item = devlink_trap_group_item_get_from_info(devlink, info);
7491 if (!group_item) {
7492 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
7493 return -ENOENT;
7494 }
7495
c064875a
IS		 7496 err = devlink_trap_group_action_set(devlink, group_item, info,
7497 &modified);
0f420b6c
IS		 7498 if (err)
7499 return err;
7500
c064875a
IS		 7501 err = devlink_trap_group_set(devlink, group_item, info);
7502 if (err)
7503 goto err_trap_group_set;
7504
0f420b6c 7505 return 0;
c064875a
IS		 7506
7507err_trap_group_set:
7508 if (modified)
7509 NL_SET_ERR_MSG_MOD(extack, "Trap group set failed, but some changes were committed already");
7510 return err;
0f420b6c
IS		 7511}
7512
1e8c6619
IS		 7513static struct devlink_trap_policer_item *
7514devlink_trap_policer_item_get_from_info(struct devlink *devlink,
7515 struct genl_info *info)
7516{
7517 u32 id;
7518
7519 if (!info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID])
7520 return NULL;
7521 id = nla_get_u32(info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID]);
7522
7523 return devlink_trap_policer_item_lookup(devlink, id);
7524}
7525
7526static int
7527devlink_trap_policer_stats_put(struct sk_buff *msg, struct devlink *devlink,
7528 const struct devlink_trap_policer *policer)
7529{
7530 struct nlattr *attr;
7531 u64 drops;
7532 int err;
7533
7534 if (!devlink->ops->trap_policer_counter_get)
7535 return 0;
7536
7537 err = devlink->ops->trap_policer_counter_get(devlink, policer, &drops);
7538 if (err)
7539 return err;
7540
7541 attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
7542 if (!attr)
7543 return -EMSGSIZE;
7544
7545 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_DROPPED, drops,
7546 DEVLINK_ATTR_PAD))
7547 goto nla_put_failure;
7548
7549 nla_nest_end(msg, attr);
7550
7551 return 0;
7552
7553nla_put_failure:
7554 nla_nest_cancel(msg, attr);
7555 return -EMSGSIZE;
7556}
7557
7558static int
7559devlink_nl_trap_policer_fill(struct sk_buff *msg, struct devlink *devlink,
7560 const struct devlink_trap_policer_item *policer_item,
7561 enum devlink_command cmd, u32 portid, u32 seq,
7562 int flags)
7563{
7564 void *hdr;
7565 int err;
7566
7567 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
7568 if (!hdr)
7569 return -EMSGSIZE;
7570
7571 if (devlink_nl_put_handle(msg, devlink))
7572 goto nla_put_failure;
7573
7574 if (nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID,
7575 policer_item->policer->id))
7576 goto nla_put_failure;
7577
7578 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_RATE,
7579 policer_item->rate, DEVLINK_ATTR_PAD))
7580 goto nla_put_failure;
7581
7582 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_BURST,
7583 policer_item->burst, DEVLINK_ATTR_PAD))
7584 goto nla_put_failure;
7585
7586 err = devlink_trap_policer_stats_put(msg, devlink,
7587 policer_item->policer);
7588 if (err)
7589 goto nla_put_failure;
7590
7591 genlmsg_end(msg, hdr);
7592
7593 return 0;
7594
7595nla_put_failure:
7596 genlmsg_cancel(msg, hdr);
7597 return -EMSGSIZE;
7598}
7599
7600static int devlink_nl_cmd_trap_policer_get_doit(struct sk_buff *skb,
7601 struct genl_info *info)
7602{
7603 struct devlink_trap_policer_item *policer_item;
7604 struct netlink_ext_ack *extack = info->extack;
7605 struct devlink *devlink = info->user_ptr[0];
7606 struct sk_buff *msg;
7607 int err;
7608
7609 if (list_empty(&devlink->trap_policer_list))
7610 return -EOPNOTSUPP;
7611
7612 policer_item = devlink_trap_policer_item_get_from_info(devlink, info);
7613 if (!policer_item) {
7614 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
7615 return -ENOENT;
7616 }
7617
7618 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7619 if (!msg)
7620 return -ENOMEM;
7621
7622 err = devlink_nl_trap_policer_fill(msg, devlink, policer_item,
7623 DEVLINK_CMD_TRAP_POLICER_NEW,
7624 info->snd_portid, info->snd_seq, 0);
7625 if (err)
7626 goto err_trap_policer_fill;
7627
7628 return genlmsg_reply(msg, info);
7629
7630err_trap_policer_fill:
7631 nlmsg_free(msg);
7632 return err;
7633}
7634
7635static int devlink_nl_cmd_trap_policer_get_dumpit(struct sk_buff *msg,
7636 struct netlink_callback *cb)
7637{
7638 enum devlink_command cmd = DEVLINK_CMD_TRAP_POLICER_NEW;
7639 struct devlink_trap_policer_item *policer_item;
7640 u32 portid = NETLINK_CB(cb->skb).portid;
7641 struct devlink *devlink;
7642 int start = cb->args[0];
7643 int idx = 0;
7644 int err;
7645
7646 mutex_lock(&devlink_mutex);
7647 list_for_each_entry(devlink, &devlink_list, list) {
7648 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
7649 continue;
7650 mutex_lock(&devlink->lock);
7651 list_for_each_entry(policer_item, &devlink->trap_policer_list,
7652 list) {
7653 if (idx < start) {
7654 idx++;
7655 continue;
7656 }
7657 err = devlink_nl_trap_policer_fill(msg, devlink,
7658 policer_item, cmd,
7659 portid,
7660 cb->nlh->nlmsg_seq,
7661 NLM_F_MULTI);
7662 if (err) {
7663 mutex_unlock(&devlink->lock);
7664 goto out;
7665 }
7666 idx++;
7667 }
7668 mutex_unlock(&devlink->lock);
7669 }
7670out:
7671 mutex_unlock(&devlink_mutex);
7672
7673 cb->args[0] = idx;
7674 return msg->len;
7675}
7676
7677static int
7678devlink_trap_policer_set(struct devlink *devlink,
7679 struct devlink_trap_policer_item *policer_item,
7680 struct genl_info *info)
7681{
7682 struct netlink_ext_ack *extack = info->extack;
7683 struct nlattr **attrs = info->attrs;
7684 u64 rate, burst;
7685 int err;
7686
7687 rate = policer_item->rate;
7688 burst = policer_item->burst;
7689
7690 if (attrs[DEVLINK_ATTR_TRAP_POLICER_RATE])
7691 rate = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_RATE]);
7692
7693 if (attrs[DEVLINK_ATTR_TRAP_POLICER_BURST])
7694 burst = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_BURST]);
7695
7696 if (rate < policer_item->policer->min_rate) {
7697 NL_SET_ERR_MSG_MOD(extack, "Policer rate lower than limit");
7698 return -EINVAL;
7699 }
7700
7701 if (rate > policer_item->policer->max_rate) {
7702 NL_SET_ERR_MSG_MOD(extack, "Policer rate higher than limit");
7703 return -EINVAL;
7704 }
7705
7706 if (burst < policer_item->policer->min_burst) {
7707 NL_SET_ERR_MSG_MOD(extack, "Policer burst size lower than limit");
7708 return -EINVAL;
7709 }
7710
7711 if (burst > policer_item->policer->max_burst) {
7712 NL_SET_ERR_MSG_MOD(extack, "Policer burst size higher than limit");
7713 return -EINVAL;
7714 }
7715
7716 err = devlink->ops->trap_policer_set(devlink, policer_item->policer,
7717 rate, burst, info->extack);
7718 if (err)
7719 return err;
7720
7721 policer_item->rate = rate;
7722 policer_item->burst = burst;
7723
7724 return 0;
7725}
7726
7727static int devlink_nl_cmd_trap_policer_set_doit(struct sk_buff *skb,
7728 struct genl_info *info)
7729{
7730 struct devlink_trap_policer_item *policer_item;
7731 struct netlink_ext_ack *extack = info->extack;
7732 struct devlink *devlink = info->user_ptr[0];
7733
7734 if (list_empty(&devlink->trap_policer_list))
7735 return -EOPNOTSUPP;
7736
7737 if (!devlink->ops->trap_policer_set)
7738 return -EOPNOTSUPP;
7739
7740 policer_item = devlink_trap_policer_item_get_from_info(devlink, info);
7741 if (!policer_item) {
7742 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
7743 return -ENOENT;
7744 }
7745
7746 return devlink_trap_policer_set(devlink, policer_item, info);
7747}
7748
bfcd3a46 7749static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = {
1e8c6619
IS		 7750 [DEVLINK_ATTR_UNSPEC] = { .strict_start_type =
7751 DEVLINK_ATTR_TRAP_POLICER_ID },
bfcd3a46
JP		 7752 [DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING },
7753 [DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING },
7754 [DEVLINK_ATTR_PORT_INDEX] = { .type = NLA_U32 },
c49a9440
PP		 7755 [DEVLINK_ATTR_PORT_TYPE] = NLA_POLICY_RANGE(NLA_U16, DEVLINK_PORT_TYPE_AUTO,
7756 DEVLINK_PORT_TYPE_IB),
bfcd3a46 7757 [DEVLINK_ATTR_PORT_SPLIT_COUNT] = { .type = NLA_U32 },
bf797471
JP		 7758 [DEVLINK_ATTR_SB_INDEX] = { .type = NLA_U32 },
7759 [DEVLINK_ATTR_SB_POOL_INDEX] = { .type = NLA_U16 },
7760 [DEVLINK_ATTR_SB_POOL_TYPE] = { .type = NLA_U8 },
7761 [DEVLINK_ATTR_SB_POOL_SIZE] = { .type = NLA_U32 },
7762 [DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE] = { .type = NLA_U8 },
7763 [DEVLINK_ATTR_SB_THRESHOLD] = { .type = NLA_U32 },
7764 [DEVLINK_ATTR_SB_TC_INDEX] = { .type = NLA_U16 },
ba356c90
PP		 7765 [DEVLINK_ATTR_ESWITCH_MODE] = NLA_POLICY_RANGE(NLA_U16, DEVLINK_ESWITCH_MODE_LEGACY,
7766 DEVLINK_ESWITCH_MODE_SWITCHDEV),
59bfde01 7767 [DEVLINK_ATTR_ESWITCH_INLINE_MODE] = { .type = NLA_U8 },
f43e9b06 7768 [DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = { .type = NLA_U8 },
1555d204
AS		 7769 [DEVLINK_ATTR_DPIPE_TABLE_NAME] = { .type = NLA_NUL_STRING },
7770 [DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED] = { .type = NLA_U8 },
d9f9b9a4
AS		 7771 [DEVLINK_ATTR_RESOURCE_ID] = { .type = NLA_U64},
7772 [DEVLINK_ATTR_RESOURCE_SIZE] = { .type = NLA_U64},
e3b7ca18
MS		 7773 [DEVLINK_ATTR_PARAM_NAME] = { .type = NLA_NUL_STRING },
7774 [DEVLINK_ATTR_PARAM_TYPE] = { .type = NLA_U8 },
7775 [DEVLINK_ATTR_PARAM_VALUE_CMODE] = { .type = NLA_U8 },
d8db7ea5 7776 [DEVLINK_ATTR_REGION_NAME] = { .type = NLA_NUL_STRING },
866319bb 7777 [DEVLINK_ATTR_REGION_SNAPSHOT_ID] = { .type = NLA_U32 },
ff3b63b8
JK		 7778 [DEVLINK_ATTR_REGION_CHUNK_ADDR] = { .type = NLA_U64 },
7779 [DEVLINK_ATTR_REGION_CHUNK_LEN] = { .type = NLA_U64 },
7afe335a 7780 [DEVLINK_ATTR_HEALTH_REPORTER_NAME] = { .type = NLA_NUL_STRING },
a1e55ec0
EBE		 7781 [DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] = { .type = NLA_U64 },
7782 [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER] = { .type = NLA_U8 },
76726ccb
JK		 7783 [DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME] = { .type = NLA_NUL_STRING },
7784 [DEVLINK_ATTR_FLASH_UPDATE_COMPONENT] = { .type = NLA_NUL_STRING },
5d5b4128
JK		 7785 [DEVLINK_ATTR_FLASH_UPDATE_OVERWRITE_MASK] =
7786 NLA_POLICY_BITFIELD32(DEVLINK_SUPPORTED_FLASH_OVERWRITE_SECTIONS),
0f420b6c
IS		 7787 [DEVLINK_ATTR_TRAP_NAME] = { .type = NLA_NUL_STRING },
7788 [DEVLINK_ATTR_TRAP_ACTION] = { .type = NLA_U8 },
7789 [DEVLINK_ATTR_TRAP_GROUP_NAME] = { .type = NLA_NUL_STRING },
070c63f2
JP		 7790 [DEVLINK_ATTR_NETNS_PID] = { .type = NLA_U32 },
7791 [DEVLINK_ATTR_NETNS_FD] = { .type = NLA_U32 },
7792 [DEVLINK_ATTR_NETNS_ID] = { .type = NLA_U32 },
48bb52c8 7793 [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP] = { .type = NLA_U8 },
1e8c6619
IS		 7794 [DEVLINK_ATTR_TRAP_POLICER_ID] = { .type = NLA_U32 },
7795 [DEVLINK_ATTR_TRAP_POLICER_RATE] = { .type = NLA_U64 },
7796 [DEVLINK_ATTR_TRAP_POLICER_BURST] = { .type = NLA_U64 },
a1e8ae90 7797 [DEVLINK_ATTR_PORT_FUNCTION] = { .type = NLA_NESTED },
ccdf0721
MS		 7798 [DEVLINK_ATTR_RELOAD_ACTION] = NLA_POLICY_RANGE(NLA_U8, DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
7799 DEVLINK_RELOAD_ACTION_MAX),
dc64cc7c 7800 [DEVLINK_ATTR_RELOAD_LIMITS] = NLA_POLICY_BITFIELD32(DEVLINK_RELOAD_LIMITS_VALID_MASK),
cd76dcd6
PP		 7801 [DEVLINK_ATTR_PORT_FLAVOUR] = { .type = NLA_U16 },
7802 [DEVLINK_ATTR_PORT_PCI_PF_NUMBER] = { .type = NLA_U16 },
7803 [DEVLINK_ATTR_PORT_PCI_SF_NUMBER] = { .type = NLA_U32 },
7804 [DEVLINK_ATTR_PORT_CONTROLLER_NUMBER] = { .type = NLA_U32 },
bfcd3a46
JP		 7805};
7806
66a9b928 7807static const struct genl_small_ops devlink_nl_ops[] = {
bfcd3a46
JP		 7808 {
7809 .cmd = DEVLINK_CMD_GET,
ef6243ac 7810 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46
JP		 7811 .doit = devlink_nl_cmd_get_doit,
7812 .dumpit = devlink_nl_cmd_get_dumpit,
bfcd3a46
JP		 7813 /* can be retrieved by unprivileged users */
7814 },
7815 {
7816 .cmd = DEVLINK_CMD_PORT_GET,
ef6243ac 7817 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46
JP		 7818 .doit = devlink_nl_cmd_port_get_doit,
7819 .dumpit = devlink_nl_cmd_port_get_dumpit,
bfcd3a46
JP		 7820 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
7821 /* can be retrieved by unprivileged users */
7822 },
7823 {
7824 .cmd = DEVLINK_CMD_PORT_SET,
ef6243ac 7825 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46 7826 .doit = devlink_nl_cmd_port_set_doit,
bfcd3a46
JP		 7827 .flags = GENL_ADMIN_PERM,
7828 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
7829 },
7830 {
7831 .cmd = DEVLINK_CMD_PORT_SPLIT,
ef6243ac 7832 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46 7833 .doit = devlink_nl_cmd_port_split_doit,
bfcd3a46 7834 .flags = GENL_ADMIN_PERM,
637989b5 7835 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
bfcd3a46
JP		 7836 },
7837 {
7838 .cmd = DEVLINK_CMD_PORT_UNSPLIT,
ef6243ac 7839 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46 7840 .doit = devlink_nl_cmd_port_unsplit_doit,
bfcd3a46 7841 .flags = GENL_ADMIN_PERM,
637989b5 7842 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
bfcd3a46 7843 },
cd76dcd6
PP		 7844 {
7845 .cmd = DEVLINK_CMD_PORT_NEW,
7846 .doit = devlink_nl_cmd_port_new_doit,
7847 .flags = GENL_ADMIN_PERM,
7848 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
7849 },
7850 {
7851 .cmd = DEVLINK_CMD_PORT_DEL,
7852 .doit = devlink_nl_cmd_port_del_doit,
7853 .flags = GENL_ADMIN_PERM,
7854 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
7855 },
bf797471
JP		 7856 {
7857 .cmd = DEVLINK_CMD_SB_GET,
ef6243ac 7858 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471
JP		 7859 .doit = devlink_nl_cmd_sb_get_doit,
7860 .dumpit = devlink_nl_cmd_sb_get_dumpit,
bf797471
JP		 7861 /* can be retrieved by unprivileged users */
7862 },
7863 {
7864 .cmd = DEVLINK_CMD_SB_POOL_GET,
ef6243ac 7865 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471
JP		 7866 .doit = devlink_nl_cmd_sb_pool_get_doit,
7867 .dumpit = devlink_nl_cmd_sb_pool_get_dumpit,
bf797471
JP		 7868 /* can be retrieved by unprivileged users */
7869 },
7870 {
7871 .cmd = DEVLINK_CMD_SB_POOL_SET,
ef6243ac 7872 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471 7873 .doit = devlink_nl_cmd_sb_pool_set_doit,
bf797471 7874 .flags = GENL_ADMIN_PERM,
bf797471
JP		 7875 },
7876 {
7877 .cmd = DEVLINK_CMD_SB_PORT_POOL_GET,
ef6243ac 7878 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471
JP		 7879 .doit = devlink_nl_cmd_sb_port_pool_get_doit,
7880 .dumpit = devlink_nl_cmd_sb_port_pool_get_dumpit,
637989b5 7881 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
bf797471
JP		 7882 /* can be retrieved by unprivileged users */
7883 },
7884 {
7885 .cmd = DEVLINK_CMD_SB_PORT_POOL_SET,
ef6243ac 7886 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471 7887 .doit = devlink_nl_cmd_sb_port_pool_set_doit,
bf797471 7888 .flags = GENL_ADMIN_PERM,
637989b5 7889 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
bf797471
JP		 7890 },
7891 {
7892 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_GET,
ef6243ac 7893 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471
JP		 7894 .doit = devlink_nl_cmd_sb_tc_pool_bind_get_doit,
7895 .dumpit = devlink_nl_cmd_sb_tc_pool_bind_get_dumpit,
637989b5 7896 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
bf797471
JP		 7897 /* can be retrieved by unprivileged users */
7898 },
7899 {
7900 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_SET,
ef6243ac 7901 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471 7902 .doit = devlink_nl_cmd_sb_tc_pool_bind_set_doit,
bf797471 7903 .flags = GENL_ADMIN_PERM,
637989b5 7904 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
bf797471 7905 },
df38dafd
JP		 7906 {
7907 .cmd = DEVLINK_CMD_SB_OCC_SNAPSHOT,
ef6243ac 7908 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
df38dafd 7909 .doit = devlink_nl_cmd_sb_occ_snapshot_doit,
df38dafd 7910 .flags = GENL_ADMIN_PERM,
df38dafd
JP		 7911 },
7912 {
7913 .cmd = DEVLINK_CMD_SB_OCC_MAX_CLEAR,
ef6243ac 7914 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
df38dafd 7915 .doit = devlink_nl_cmd_sb_occ_max_clear_doit,
df38dafd 7916 .flags = GENL_ADMIN_PERM,
df38dafd 7917 },
08f4b591 7918 {
adf200f3 7919 .cmd = DEVLINK_CMD_ESWITCH_GET,
ef6243ac 7920 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
adf200f3 7921 .doit = devlink_nl_cmd_eswitch_get_doit,
08f4b591 7922 .flags = GENL_ADMIN_PERM,
637989b5 7923 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
08f4b591
OG		 7924 },
7925 {
adf200f3 7926 .cmd = DEVLINK_CMD_ESWITCH_SET,
ef6243ac 7927 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
adf200f3 7928 .doit = devlink_nl_cmd_eswitch_set_doit,
08f4b591 7929 .flags = GENL_ADMIN_PERM,
637989b5 7930 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
08f4b591 7931 },
1555d204
AS		 7932 {
7933 .cmd = DEVLINK_CMD_DPIPE_TABLE_GET,
ef6243ac 7934 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1555d204 7935 .doit = devlink_nl_cmd_dpipe_table_get,
67ae686b 7936 /* can be retrieved by unprivileged users */
1555d204
AS		 7937 },
7938 {
7939 .cmd = DEVLINK_CMD_DPIPE_ENTRIES_GET,
ef6243ac 7940 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1555d204 7941 .doit = devlink_nl_cmd_dpipe_entries_get,
67ae686b 7942 /* can be retrieved by unprivileged users */
1555d204
AS		 7943 },
7944 {
7945 .cmd = DEVLINK_CMD_DPIPE_HEADERS_GET,
ef6243ac 7946 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1555d204 7947 .doit = devlink_nl_cmd_dpipe_headers_get,
67ae686b 7948 /* can be retrieved by unprivileged users */
1555d204
AS		 7949 },
7950 {
7951 .cmd = DEVLINK_CMD_DPIPE_TABLE_COUNTERS_SET,
ef6243ac 7952 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1555d204 7953 .doit = devlink_nl_cmd_dpipe_table_counters_set,
1555d204 7954 .flags = GENL_ADMIN_PERM,
1555d204 7955 },
d9f9b9a4
AS		 7956 {
7957 .cmd = DEVLINK_CMD_RESOURCE_SET,
ef6243ac 7958 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
d9f9b9a4 7959 .doit = devlink_nl_cmd_resource_set,
d9f9b9a4 7960 .flags = GENL_ADMIN_PERM,
d9f9b9a4
AS		 7961 },
7962 {
7963 .cmd = DEVLINK_CMD_RESOURCE_DUMP,
ef6243ac 7964 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
d9f9b9a4 7965 .doit = devlink_nl_cmd_resource_dump,
67ae686b 7966 /* can be retrieved by unprivileged users */
d9f9b9a4 7967 },
2d8dc5bb
AS		 7968 {
7969 .cmd = DEVLINK_CMD_RELOAD,
ef6243ac 7970 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2d8dc5bb 7971 .doit = devlink_nl_cmd_reload,
2d8dc5bb 7972 .flags = GENL_ADMIN_PERM,
637989b5 7973 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
2d8dc5bb 7974 },
45f05def
MS		 7975 {
7976 .cmd = DEVLINK_CMD_PARAM_GET,
ef6243ac 7977 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
45f05def
MS		 7978 .doit = devlink_nl_cmd_param_get_doit,
7979 .dumpit = devlink_nl_cmd_param_get_dumpit,
45f05def
MS		 7980 /* can be retrieved by unprivileged users */
7981 },
e3b7ca18
MS		 7982 {
7983 .cmd = DEVLINK_CMD_PARAM_SET,
ef6243ac 7984 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
e3b7ca18 7985 .doit = devlink_nl_cmd_param_set_doit,
e3b7ca18 7986 .flags = GENL_ADMIN_PERM,
e3b7ca18 7987 },
f4601dee
VV		 7988 {
7989 .cmd = DEVLINK_CMD_PORT_PARAM_GET,
ef6243ac 7990 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
f4601dee
VV		 7991 .doit = devlink_nl_cmd_port_param_get_doit,
7992 .dumpit = devlink_nl_cmd_port_param_get_dumpit,
f4601dee
VV		 7993 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
7994 /* can be retrieved by unprivileged users */
7995 },
9c54873b
VV		 7996 {
7997 .cmd = DEVLINK_CMD_PORT_PARAM_SET,
ef6243ac 7998 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
9c54873b 7999 .doit = devlink_nl_cmd_port_param_set_doit,
9c54873b
VV		 8000 .flags = GENL_ADMIN_PERM,
8001 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
8002 },
d8db7ea5
AV		 8003 {
8004 .cmd = DEVLINK_CMD_REGION_GET,
ef6243ac 8005 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
d8db7ea5
AV		 8006 .doit = devlink_nl_cmd_region_get_doit,
8007 .dumpit = devlink_nl_cmd_region_get_dumpit,
d8db7ea5 8008 .flags = GENL_ADMIN_PERM,
d8db7ea5 8009 },
b9a17abf
JK		 8010 {
8011 .cmd = DEVLINK_CMD_REGION_NEW,
8012 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8013 .doit = devlink_nl_cmd_region_new,
8014 .flags = GENL_ADMIN_PERM,
b9a17abf 8015 },
866319bb
AV		 8016 {
8017 .cmd = DEVLINK_CMD_REGION_DEL,
ef6243ac 8018 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
866319bb 8019 .doit = devlink_nl_cmd_region_del,
866319bb 8020 .flags = GENL_ADMIN_PERM,
866319bb 8021 },
4e54795a
AV		 8022 {
8023 .cmd = DEVLINK_CMD_REGION_READ,
ee85da53
JP		 8024 .validate = GENL_DONT_VALIDATE_STRICT |
8025 GENL_DONT_VALIDATE_DUMP_STRICT,
4e54795a 8026 .dumpit = devlink_nl_cmd_region_read_dumpit,
4e54795a 8027 .flags = GENL_ADMIN_PERM,
4e54795a 8028 },
f9cf2288
JK		 8029 {
8030 .cmd = DEVLINK_CMD_INFO_GET,
ef6243ac 8031 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
f9cf2288
JK		 8032 .doit = devlink_nl_cmd_info_get_doit,
8033 .dumpit = devlink_nl_cmd_info_get_dumpit,
f9cf2288
JK		 8034 /* can be retrieved by unprivileged users */
8035 },
7afe335a
EBE		 8036 {
8037 .cmd = DEVLINK_CMD_HEALTH_REPORTER_GET,
ef6243ac 8038 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7afe335a
EBE		 8039 .doit = devlink_nl_cmd_health_reporter_get_doit,
8040 .dumpit = devlink_nl_cmd_health_reporter_get_dumpit,
f4f54166 8041 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
b587bdaf 8042 DEVLINK_NL_FLAG_NO_LOCK,
7afe335a
EBE		 8043 /* can be retrieved by unprivileged users */
8044 },
a1e55ec0
EBE		 8045 {
8046 .cmd = DEVLINK_CMD_HEALTH_REPORTER_SET,
ef6243ac 8047 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
a1e55ec0 8048 .doit = devlink_nl_cmd_health_reporter_set_doit,
a1e55ec0 8049 .flags = GENL_ADMIN_PERM,
f4f54166 8050 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
b587bdaf 8051 DEVLINK_NL_FLAG_NO_LOCK,
a1e55ec0 8052 },
20a0943a
EBE		 8053 {
8054 .cmd = DEVLINK_CMD_HEALTH_REPORTER_RECOVER,
ef6243ac 8055 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
20a0943a 8056 .doit = devlink_nl_cmd_health_reporter_recover_doit,
20a0943a 8057 .flags = GENL_ADMIN_PERM,
f4f54166 8058 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
b587bdaf 8059 DEVLINK_NL_FLAG_NO_LOCK,
20a0943a 8060 },
fca42a27
EBE		 8061 {
8062 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE,
ef6243ac 8063 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
fca42a27 8064 .doit = devlink_nl_cmd_health_reporter_diagnose_doit,
fca42a27 8065 .flags = GENL_ADMIN_PERM,
f4f54166 8066 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
b587bdaf 8067 DEVLINK_NL_FLAG_NO_LOCK,
fca42a27 8068 },
35455e23
EBE		 8069 {
8070 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET,
82a843de
JP		 8071 .validate = GENL_DONT_VALIDATE_STRICT |
8072 GENL_DONT_VALIDATE_DUMP_STRICT,
e44ef4e4 8073 .dumpit = devlink_nl_cmd_health_reporter_dump_get_dumpit,
35455e23 8074 .flags = GENL_ADMIN_PERM,
f4f54166 8075 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
35455e23
EBE		 8076 DEVLINK_NL_FLAG_NO_LOCK,
8077 },
8078 {
8079 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_CLEAR,
ef6243ac 8080 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
35455e23 8081 .doit = devlink_nl_cmd_health_reporter_dump_clear_doit,
35455e23 8082 .flags = GENL_ADMIN_PERM,
f4f54166 8083 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
35455e23
EBE		 8084 DEVLINK_NL_FLAG_NO_LOCK,
8085 },
e2ce94dc
JP		 8086 {
8087 .cmd = DEVLINK_CMD_HEALTH_REPORTER_TEST,
8088 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8089 .doit = devlink_nl_cmd_health_reporter_test_doit,
8090 .flags = GENL_ADMIN_PERM,
8091 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
8092 DEVLINK_NL_FLAG_NO_LOCK,
8093 },
76726ccb
JK		 8094 {
8095 .cmd = DEVLINK_CMD_FLASH_UPDATE,
ef6243ac 8096 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
76726ccb 8097 .doit = devlink_nl_cmd_flash_update,
76726ccb 8098 .flags = GENL_ADMIN_PERM,
76726ccb 8099 },
0f420b6c
IS		 8100 {
8101 .cmd = DEVLINK_CMD_TRAP_GET,
8102 .doit = devlink_nl_cmd_trap_get_doit,
8103 .dumpit = devlink_nl_cmd_trap_get_dumpit,
0f420b6c
IS		 8104 /* can be retrieved by unprivileged users */
8105 },
8106 {
8107 .cmd = DEVLINK_CMD_TRAP_SET,
8108 .doit = devlink_nl_cmd_trap_set_doit,
8109 .flags = GENL_ADMIN_PERM,
0f420b6c
IS		 8110 },
8111 {
8112 .cmd = DEVLINK_CMD_TRAP_GROUP_GET,
8113 .doit = devlink_nl_cmd_trap_group_get_doit,
8114 .dumpit = devlink_nl_cmd_trap_group_get_dumpit,
0f420b6c
IS		 8115 /* can be retrieved by unprivileged users */
8116 },
8117 {
8118 .cmd = DEVLINK_CMD_TRAP_GROUP_SET,
8119 .doit = devlink_nl_cmd_trap_group_set_doit,
8120 .flags = GENL_ADMIN_PERM,
0f420b6c 8121 },
1e8c6619
IS		 8122 {
8123 .cmd = DEVLINK_CMD_TRAP_POLICER_GET,
8124 .doit = devlink_nl_cmd_trap_policer_get_doit,
8125 .dumpit = devlink_nl_cmd_trap_policer_get_dumpit,
1e8c6619
IS		 8126 /* can be retrieved by unprivileged users */
8127 },
8128 {
8129 .cmd = DEVLINK_CMD_TRAP_POLICER_SET,
8130 .doit = devlink_nl_cmd_trap_policer_set_doit,
8131 .flags = GENL_ADMIN_PERM,
1e8c6619 8132 },
bfcd3a46
JP		 8133};
8134
56989f6d 8135static struct genl_family devlink_nl_family __ro_after_init = {
489111e5
JB		 8136 .name = DEVLINK_GENL_NAME,
8137 .version = DEVLINK_GENL_VERSION,
8138 .maxattr = DEVLINK_ATTR_MAX,
3b0f31f2 8139 .policy = devlink_nl_policy,
489111e5
JB		 8140 .netnsok = true,
8141 .pre_doit = devlink_nl_pre_doit,
8142 .post_doit = devlink_nl_post_doit,
8143 .module = THIS_MODULE,
66a9b928
JK		 8144 .small_ops = devlink_nl_ops,
8145 .n_small_ops = ARRAY_SIZE(devlink_nl_ops),
489111e5
JB		 8146 .mcgrps = devlink_nl_mcgrps,
8147 .n_mcgrps = ARRAY_SIZE(devlink_nl_mcgrps),
8148};
8149
ccdf0721
MS		 8150static bool devlink_reload_actions_valid(const struct devlink_ops *ops)
8151{
dc64cc7c
MS		 8152 const struct devlink_reload_combination *comb;
8153 int i;
8154
ccdf0721
MS		 8155 if (!devlink_reload_supported(ops)) {
8156 if (WARN_ON(ops->reload_actions))
8157 return false;
8158 return true;
8159 }
8160
8161 if (WARN_ON(!ops->reload_actions ||
8162 ops->reload_actions & BIT(DEVLINK_RELOAD_ACTION_UNSPEC) ||
8163 ops->reload_actions >= BIT(__DEVLINK_RELOAD_ACTION_MAX)))
8164 return false;
dc64cc7c
MS		 8165
8166 if (WARN_ON(ops->reload_limits & BIT(DEVLINK_RELOAD_LIMIT_UNSPEC) ||
8167 ops->reload_limits >= BIT(__DEVLINK_RELOAD_LIMIT_MAX)))
8168 return false;
8169
8170 for (i = 0; i < ARRAY_SIZE(devlink_reload_invalid_combinations); i++) {
8171 comb = &devlink_reload_invalid_combinations[i];
8172 if (ops->reload_actions == BIT(comb->action) &&
8173 ops->reload_limits == BIT(comb->limit))
8174 return false;
8175 }
ccdf0721
MS		 8176 return true;
8177}
8178
bfcd3a46
JP		 8179/**
8180 * devlink_alloc - Allocate new devlink instance resources
8181 *
8182 * @ops: ops
8183 * @priv_size: size of user private data
8184 *
8185 * Allocate new devlink instance resources, including devlink index
8186 * and name.
8187 */
8188struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size)
8189{
8190 struct devlink *devlink;
8191
be6fe1d8
JK		 8192 if (WARN_ON(!ops))
8193 return NULL;
8194
ccdf0721
MS		 8195 if (!devlink_reload_actions_valid(ops))
8196 return NULL;
8197
bfcd3a46
JP		 8198 devlink = kzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL);
8199 if (!devlink)
8200 return NULL;
8201 devlink->ops = ops;
12102436 8202 xa_init_flags(&devlink->snapshot_ids, XA_FLAGS_ALLOC);
8273fd84 8203 __devlink_net_set(devlink, &init_net);
bfcd3a46 8204 INIT_LIST_HEAD(&devlink->port_list);
bf797471 8205 INIT_LIST_HEAD(&devlink->sb_list);
1555d204 8206 INIT_LIST_HEAD_RCU(&devlink->dpipe_table_list);
d9f9b9a4 8207 INIT_LIST_HEAD(&devlink->resource_list);
eabaef18 8208 INIT_LIST_HEAD(&devlink->param_list);
b16ebe92 8209 INIT_LIST_HEAD(&devlink->region_list);
a0bdcc59 8210 INIT_LIST_HEAD(&devlink->reporter_list);
0f420b6c
IS		 8211 INIT_LIST_HEAD(&devlink->trap_list);
8212 INIT_LIST_HEAD(&devlink->trap_group_list);
1e8c6619 8213 INIT_LIST_HEAD(&devlink->trap_policer_list);
2406e7e5 8214 mutex_init(&devlink->lock);
b587bdaf 8215 mutex_init(&devlink->reporters_lock);
bfcd3a46
JP		 8216 return devlink;
8217}
8218EXPORT_SYMBOL_GPL(devlink_alloc);
8219
8220/**
8221 * devlink_register - Register devlink instance
8222 *
8223 * @devlink: devlink
eeaadd82 8224 * @dev: parent device
bfcd3a46
JP		 8225 */
8226int devlink_register(struct devlink *devlink, struct device *dev)
8227{
bfcd3a46 8228 devlink->dev = dev;
8273fd84 8229 devlink->registered = true;
6553e561 8230 mutex_lock(&devlink_mutex);
bfcd3a46
JP		 8231 list_add_tail(&devlink->list, &devlink_list);
8232 devlink_notify(devlink, DEVLINK_CMD_NEW);
8233 mutex_unlock(&devlink_mutex);
8234 return 0;
8235}
8236EXPORT_SYMBOL_GPL(devlink_register);
8237
8238/**
8239 * devlink_unregister - Unregister devlink instance
8240 *
8241 * @devlink: devlink
8242 */
8243void devlink_unregister(struct devlink *devlink)
8244{
8245 mutex_lock(&devlink_mutex);
69d56e0e 8246 WARN_ON(devlink_reload_supported(devlink->ops) &&
a0c76345 8247 devlink->reload_enabled);
bfcd3a46
JP		 8248 devlink_notify(devlink, DEVLINK_CMD_DEL);
8249 list_del(&devlink->list);
8250 mutex_unlock(&devlink_mutex);
8251}
8252EXPORT_SYMBOL_GPL(devlink_unregister);
8253
a0c76345
JP		 8254/**
8255 * devlink_reload_enable - Enable reload of devlink instance
8256 *
8257 * @devlink: devlink
8258 *
8259 * Should be called at end of device initialization
8260 * process when reload operation is supported.
8261 */
8262void devlink_reload_enable(struct devlink *devlink)
8263{
8264 mutex_lock(&devlink_mutex);
8265 devlink->reload_enabled = true;
8266 mutex_unlock(&devlink_mutex);
8267}
8268EXPORT_SYMBOL_GPL(devlink_reload_enable);
8269
8270/**
8271 * devlink_reload_disable - Disable reload of devlink instance
8272 *
8273 * @devlink: devlink
8274 *
8275 * Should be called at the beginning of device cleanup
8276 * process when reload operation is supported.
8277 */
8278void devlink_reload_disable(struct devlink *devlink)
8279{
8280 mutex_lock(&devlink_mutex);
8281 /* Mutex is taken which ensures that no reload operation is in
8282 * progress while setting up forbidded flag.
8283 */
8284 devlink->reload_enabled = false;
8285 mutex_unlock(&devlink_mutex);
8286}
8287EXPORT_SYMBOL_GPL(devlink_reload_disable);
8288
bfcd3a46
JP		 8289/**
8290 * devlink_free - Free devlink instance resources
8291 *
8292 * @devlink: devlink
8293 */
8294void devlink_free(struct devlink *devlink)
8295{
b587bdaf 8296 mutex_destroy(&devlink->reporters_lock);
375cf8c6 8297 mutex_destroy(&devlink->lock);
1e8c6619 8298 WARN_ON(!list_empty(&devlink->trap_policer_list));
0f420b6c
IS		 8299 WARN_ON(!list_empty(&devlink->trap_group_list));
8300 WARN_ON(!list_empty(&devlink->trap_list));
b904aada
PP		 8301 WARN_ON(!list_empty(&devlink->reporter_list));
8302 WARN_ON(!list_empty(&devlink->region_list));
8303 WARN_ON(!list_empty(&devlink->param_list));
8304 WARN_ON(!list_empty(&devlink->resource_list));
8305 WARN_ON(!list_empty(&devlink->dpipe_table_list));
8306 WARN_ON(!list_empty(&devlink->sb_list));
8307 WARN_ON(!list_empty(&devlink->port_list));
8308
12102436
JK		 8309 xa_destroy(&devlink->snapshot_ids);
8310
bfcd3a46
JP		 8311 kfree(devlink);
8312}
8313EXPORT_SYMBOL_GPL(devlink_free);
8314
136bf27f
JP		 8315static void devlink_port_type_warn(struct work_struct *work)
8316{
8317 WARN(true, "Type was not set for devlink port.");
8318}
8319
8320static bool devlink_port_type_should_warn(struct devlink_port *devlink_port)
8321{
8322 /* Ignore CPU and DSA flavours. */
8323 return devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_CPU &&
cf116634
AL		 8324 devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_DSA &&
8325 devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_UNUSED;
136bf27f
JP		 8326}
8327
4c582234 8328#define DEVLINK_PORT_TYPE_WARN_TIMEOUT (HZ * 3600)
136bf27f
JP		 8329
8330static void devlink_port_type_warn_schedule(struct devlink_port *devlink_port)
8331{
8332 if (!devlink_port_type_should_warn(devlink_port))
8333 return;
8334 /* Schedule a work to WARN in case driver does not set port
8335 * type within timeout.
8336 */
8337 schedule_delayed_work(&devlink_port->type_warn_dw,
8338 DEVLINK_PORT_TYPE_WARN_TIMEOUT);
8339}
8340
8341static void devlink_port_type_warn_cancel(struct devlink_port *devlink_port)
8342{
8343 if (!devlink_port_type_should_warn(devlink_port))
8344 return;
8345 cancel_delayed_work_sync(&devlink_port->type_warn_dw);
8346}
8347
bfcd3a46
JP		 8348/**
8349 * devlink_port_register - Register devlink port
8350 *
8351 * @devlink: devlink
8352 * @devlink_port: devlink port
eeaadd82 8353 * @port_index: driver-specific numerical identifier of the port
bfcd3a46
JP		 8354 *
8355 * Register devlink port with provided port index. User can use
8356 * any indexing, even hw-related one. devlink_port structure
8357 * is convenient to be embedded inside user driver private structure.
8358 * Note that the caller should take care of zeroing the devlink_port
8359 * structure.
8360 */
8361int devlink_port_register(struct devlink *devlink,
8362 struct devlink_port *devlink_port,
8363 unsigned int port_index)
8364{
2406e7e5 8365 mutex_lock(&devlink->lock);
bfcd3a46 8366 if (devlink_port_index_exists(devlink, port_index)) {
2406e7e5 8367 mutex_unlock(&devlink->lock);
bfcd3a46
JP		 8368 return -EEXIST;
8369 }
8370 devlink_port->devlink = devlink;
8371 devlink_port->index = port_index;
bfcd3a46 8372 devlink_port->registered = true;
b8f97554 8373 spin_lock_init(&devlink_port->type_lock);
79604c5d
PP		 8374 INIT_LIST_HEAD(&devlink_port->reporter_list);
8375 mutex_init(&devlink_port->reporters_lock);
bfcd3a46 8376 list_add_tail(&devlink_port->list, &devlink->port_list);
39e6160e 8377 INIT_LIST_HEAD(&devlink_port->param_list);
544e7c33 8378 INIT_LIST_HEAD(&devlink_port->region_list);
2406e7e5 8379 mutex_unlock(&devlink->lock);
136bf27f
JP		 8380 INIT_DELAYED_WORK(&devlink_port->type_warn_dw, &devlink_port_type_warn);
8381 devlink_port_type_warn_schedule(devlink_port);
bfcd3a46
JP		 8382 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
8383 return 0;
8384}
8385EXPORT_SYMBOL_GPL(devlink_port_register);
8386
8387/**
8388 * devlink_port_unregister - Unregister devlink port
8389 *
8390 * @devlink_port: devlink port
8391 */
8392void devlink_port_unregister(struct devlink_port *devlink_port)
8393{
2406e7e5
AS		 8394 struct devlink *devlink = devlink_port->devlink;
8395
136bf27f 8396 devlink_port_type_warn_cancel(devlink_port);
bfcd3a46 8397 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
2406e7e5 8398 mutex_lock(&devlink->lock);
bfcd3a46 8399 list_del(&devlink_port->list);
2406e7e5 8400 mutex_unlock(&devlink->lock);
79604c5d 8401 WARN_ON(!list_empty(&devlink_port->reporter_list));
544e7c33 8402 WARN_ON(!list_empty(&devlink_port->region_list));
79604c5d 8403 mutex_destroy(&devlink_port->reporters_lock);
bfcd3a46
JP		 8404}
8405EXPORT_SYMBOL_GPL(devlink_port_unregister);
8406
8407static void __devlink_port_type_set(struct devlink_port *devlink_port,
8408 enum devlink_port_type type,
8409 void *type_dev)
8410{
2b239e70
JP		 8411 if (WARN_ON(!devlink_port->registered))
8412 return;
136bf27f 8413 devlink_port_type_warn_cancel(devlink_port);
0f420b6c 8414 spin_lock_bh(&devlink_port->type_lock);
bfcd3a46
JP		 8415 devlink_port->type = type;
8416 devlink_port->type_dev = type_dev;
0f420b6c 8417 spin_unlock_bh(&devlink_port->type_lock);
bfcd3a46
JP		 8418 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
8419}
8420
3ea87ca7
JK		 8421static void devlink_port_type_netdev_checks(struct devlink_port *devlink_port,
8422 struct net_device *netdev)
bfcd3a46 8423{
119c0b57
JP		 8424 const struct net_device_ops *ops = netdev->netdev_ops;
8425
746364f2
JP		 8426 /* If driver registers devlink port, it should set devlink port
8427 * attributes accordingly so the compat functions are called
8428 * and the original ops are not used.
8429 */
119c0b57 8430 if (ops->ndo_get_phys_port_name) {
746364f2
JP		 8431 /* Some drivers use the same set of ndos for netdevs
8432 * that have devlink_port registered and also for
8433 * those who don't. Make sure that ndo_get_phys_port_name
8434 * returns -EOPNOTSUPP here in case it is defined.
8435 * Warn if not.
8436 */
746364f2
JP		 8437 char name[IFNAMSIZ];
8438 int err;
8439
8440 err = ops->ndo_get_phys_port_name(netdev, name, sizeof(name));
8441 WARN_ON(err != -EOPNOTSUPP);
8442 }
119c0b57
JP		 8443 if (ops->ndo_get_port_parent_id) {
8444 /* Some drivers use the same set of ndos for netdevs
8445 * that have devlink_port registered and also for
8446 * those who don't. Make sure that ndo_get_port_parent_id
8447 * returns -EOPNOTSUPP here in case it is defined.
8448 * Warn if not.
8449 */
8450 struct netdev_phys_item_id ppid;
8451 int err;
8452
8453 err = ops->ndo_get_port_parent_id(netdev, &ppid);
8454 WARN_ON(err != -EOPNOTSUPP);
8455 }
3ea87ca7
JK		 8456}
8457
8458/**
8459 * devlink_port_type_eth_set - Set port type to Ethernet
8460 *
8461 * @devlink_port: devlink port
8462 * @netdev: related netdevice
8463 */
8464void devlink_port_type_eth_set(struct devlink_port *devlink_port,
8465 struct net_device *netdev)
8466{
8467 if (netdev)
8468 devlink_port_type_netdev_checks(devlink_port, netdev);
8469 else
8470 dev_warn(devlink_port->devlink->dev,
8471 "devlink port type for port %d set to Ethernet without a software interface reference, device type not supported by the kernel?\n",
8472 devlink_port->index);
8473
773b1f38 8474 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH, netdev);
bfcd3a46
JP		 8475}
8476EXPORT_SYMBOL_GPL(devlink_port_type_eth_set);
8477
8478/**
8479 * devlink_port_type_ib_set - Set port type to InfiniBand
8480 *
8481 * @devlink_port: devlink port
8482 * @ibdev: related IB device
8483 */
8484void devlink_port_type_ib_set(struct devlink_port *devlink_port,
8485 struct ib_device *ibdev)
8486{
773b1f38 8487 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_IB, ibdev);
bfcd3a46
JP		 8488}
8489EXPORT_SYMBOL_GPL(devlink_port_type_ib_set);
8490
8491/**
8492 * devlink_port_type_clear - Clear port type
8493 *
8494 * @devlink_port: devlink port
8495 */
8496void devlink_port_type_clear(struct devlink_port *devlink_port)
8497{
773b1f38 8498 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET, NULL);
136bf27f 8499 devlink_port_type_warn_schedule(devlink_port);
bfcd3a46
JP		 8500}
8501EXPORT_SYMBOL_GPL(devlink_port_type_clear);
8502
378ef01b 8503static int __devlink_port_attrs_set(struct devlink_port *devlink_port,
71ad8d55 8504 enum devlink_port_flavour flavour)
378ef01b
PP		 8505{
8506 struct devlink_port_attrs *attrs = &devlink_port->attrs;
8507
10a429ba 8508 devlink_port->attrs_set = true;
378ef01b 8509 attrs->flavour = flavour;
71ad8d55 8510 if (attrs->switch_id.id_len) {
46737a19 8511 devlink_port->switch_port = true;
71ad8d55
DR		 8512 if (WARN_ON(attrs->switch_id.id_len > MAX_PHYS_ITEM_ID_LEN))
8513 attrs->switch_id.id_len = MAX_PHYS_ITEM_ID_LEN;
378ef01b 8514 } else {
46737a19 8515 devlink_port->switch_port = false;
378ef01b
PP		 8516 }
8517 return 0;
8518}
8519
bfcd3a46 8520/**
b9ffcbaf 8521 * devlink_port_attrs_set - Set port attributes
bfcd3a46
JP		 8522 *
8523 * @devlink_port: devlink port
71ad8d55 8524 * @attrs: devlink port attrs
bfcd3a46 8525 */
b9ffcbaf 8526void devlink_port_attrs_set(struct devlink_port *devlink_port,
71ad8d55 8527 struct devlink_port_attrs *attrs)
bfcd3a46 8528{
378ef01b 8529 int ret;
b9ffcbaf 8530
9f73bd1c
PP		 8531 if (WARN_ON(devlink_port->registered))
8532 return;
71ad8d55
DR		 8533 devlink_port->attrs = *attrs;
8534 ret = __devlink_port_attrs_set(devlink_port, attrs->flavour);
378ef01b 8535 if (ret)
45b86112 8536 return;
a0f49b54 8537 WARN_ON(attrs->splittable && attrs->split);
bfcd3a46 8538}
b9ffcbaf 8539EXPORT_SYMBOL_GPL(devlink_port_attrs_set);
bfcd3a46 8540
98fd2d65
PP		 8541/**
8542 * devlink_port_attrs_pci_pf_set - Set PCI PF port attributes
8543 *
8544 * @devlink_port: devlink port
3a2d9588 8545 * @controller: associated controller number for the devlink port instance
98fd2d65 8546 * @pf: associated PF for the devlink port instance
05b595e9 8547 * @external: indicates if the port is for an external controller
98fd2d65 8548 */
3a2d9588
PP		 8549void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port, u32 controller,
8550 u16 pf, bool external)
98fd2d65
PP		 8551{
8552 struct devlink_port_attrs *attrs = &devlink_port->attrs;
8553 int ret;
8554
9f73bd1c
PP		 8555 if (WARN_ON(devlink_port->registered))
8556 return;
98fd2d65 8557 ret = __devlink_port_attrs_set(devlink_port,
71ad8d55 8558 DEVLINK_PORT_FLAVOUR_PCI_PF);
98fd2d65
PP		 8559 if (ret)
8560 return;
3a2d9588 8561 attrs->pci_pf.controller = controller;
98fd2d65 8562 attrs->pci_pf.pf = pf;
05b595e9 8563 attrs->pci_pf.external = external;
98fd2d65
PP		 8564}
8565EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_pf_set);
8566
e41b6bf3
PP		 8567/**
8568 * devlink_port_attrs_pci_vf_set - Set PCI VF port attributes
8569 *
8570 * @devlink_port: devlink port
3a2d9588 8571 * @controller: associated controller number for the devlink port instance
e41b6bf3
PP		 8572 * @pf: associated PF for the devlink port instance
8573 * @vf: associated VF of a PF for the devlink port instance
05b595e9 8574 * @external: indicates if the port is for an external controller
e41b6bf3 8575 */
3a2d9588 8576void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port, u32 controller,
05b595e9 8577 u16 pf, u16 vf, bool external)
e41b6bf3
PP		 8578{
8579 struct devlink_port_attrs *attrs = &devlink_port->attrs;
8580 int ret;
8581
9f73bd1c
PP		 8582 if (WARN_ON(devlink_port->registered))
8583 return;
e41b6bf3 8584 ret = __devlink_port_attrs_set(devlink_port,
71ad8d55 8585 DEVLINK_PORT_FLAVOUR_PCI_VF);
e41b6bf3
PP		 8586 if (ret)
8587 return;
3a2d9588 8588 attrs->pci_vf.controller = controller;
e41b6bf3
PP		 8589 attrs->pci_vf.pf = pf;
8590 attrs->pci_vf.vf = vf;
05b595e9 8591 attrs->pci_vf.external = external;
e41b6bf3
PP		 8592}
8593EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_vf_set);
8594
b8288837
PP		 8595/**
8596 * devlink_port_attrs_pci_sf_set - Set PCI SF port attributes
8597 *
8598 * @devlink_port: devlink port
8599 * @controller: associated controller number for the devlink port instance
8600 * @pf: associated PF for the devlink port instance
8601 * @sf: associated SF of a PF for the devlink port instance
a1ab3e45 8602 * @external: indicates if the port is for an external controller
b8288837
PP		 8603 */
8604void devlink_port_attrs_pci_sf_set(struct devlink_port *devlink_port, u32 controller,
a1ab3e45 8605 u16 pf, u32 sf, bool external)
b8288837
PP		 8606{
8607 struct devlink_port_attrs *attrs = &devlink_port->attrs;
8608 int ret;
8609
8610 if (WARN_ON(devlink_port->registered))
8611 return;
8612 ret = __devlink_port_attrs_set(devlink_port,
8613 DEVLINK_PORT_FLAVOUR_PCI_SF);
8614 if (ret)
8615 return;
8616 attrs->pci_sf.controller = controller;
8617 attrs->pci_sf.pf = pf;
8618 attrs->pci_sf.sf = sf;
a1ab3e45 8619 attrs->pci_sf.external = external;
b8288837
PP		 8620}
8621EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_sf_set);
8622
af3836df
JP		 8623static int __devlink_port_phys_port_name_get(struct devlink_port *devlink_port,
8624 char *name, size_t len)
08474c1a
JP		 8625{
8626 struct devlink_port_attrs *attrs = &devlink_port->attrs;
8627 int n = 0;
8628
10a429ba 8629 if (!devlink_port->attrs_set)
08474c1a
JP		 8630 return -EOPNOTSUPP;
8631
8632 switch (attrs->flavour) {
8633 case DEVLINK_PORT_FLAVOUR_PHYSICAL:
acf1ee44 8634 case DEVLINK_PORT_FLAVOUR_VIRTUAL:
08474c1a 8635 if (!attrs->split)
378ef01b 8636 n = snprintf(name, len, "p%u", attrs->phys.port_number);
08474c1a 8637 else
378ef01b
PP		 8638 n = snprintf(name, len, "p%us%u",
8639 attrs->phys.port_number,
8640 attrs->phys.split_subport_number);
08474c1a
JP		 8641 break;
8642 case DEVLINK_PORT_FLAVOUR_CPU:
8643 case DEVLINK_PORT_FLAVOUR_DSA:
cf116634 8644 case DEVLINK_PORT_FLAVOUR_UNUSED:
08474c1a
JP		 8645 /* As CPU and DSA ports do not have a netdevice associated
8646 * case should not ever happen.
8647 */
8648 WARN_ON(1);
8649 return -EINVAL;
98fd2d65 8650 case DEVLINK_PORT_FLAVOUR_PCI_PF:
66b17082
PP		 8651 if (attrs->pci_pf.external) {
8652 n = snprintf(name, len, "c%u", attrs->pci_pf.controller);
8653 if (n >= len)
8654 return -EINVAL;
8655 len -= n;
8656 name += n;
8657 }
98fd2d65
PP		 8658 n = snprintf(name, len, "pf%u", attrs->pci_pf.pf);
8659 break;
e41b6bf3 8660 case DEVLINK_PORT_FLAVOUR_PCI_VF:
66b17082
PP		 8661 if (attrs->pci_vf.external) {
8662 n = snprintf(name, len, "c%u", attrs->pci_vf.controller);
8663 if (n >= len)
8664 return -EINVAL;
8665 len -= n;
8666 name += n;
8667 }
e41b6bf3
PP		 8668 n = snprintf(name, len, "pf%uvf%u",
8669 attrs->pci_vf.pf, attrs->pci_vf.vf);
8670 break;
b8288837 8671 case DEVLINK_PORT_FLAVOUR_PCI_SF:
a1ab3e45
PP		 8672 if (attrs->pci_sf.external) {
8673 n = snprintf(name, len, "c%u", attrs->pci_sf.controller);
8674 if (n >= len)
8675 return -EINVAL;
8676 len -= n;
8677 name += n;
8678 }
b8288837
PP		 8679 n = snprintf(name, len, "pf%usf%u", attrs->pci_sf.pf,
8680 attrs->pci_sf.sf);
8681 break;
08474c1a
JP		 8682 }
8683
8684 if (n >= len)
8685 return -EINVAL;
8686
8687 return 0;
8688}
af3836df 8689
bf797471
JP		 8690int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
8691 u32 size, u16 ingress_pools_count,
8692 u16 egress_pools_count, u16 ingress_tc_count,
8693 u16 egress_tc_count)
8694{
8695 struct devlink_sb *devlink_sb;
8696 int err = 0;
8697
2406e7e5 8698 mutex_lock(&devlink->lock);
bf797471
JP		 8699 if (devlink_sb_index_exists(devlink, sb_index)) {
8700 err = -EEXIST;
8701 goto unlock;
8702 }
8703
8704 devlink_sb = kzalloc(sizeof(*devlink_sb), GFP_KERNEL);
8705 if (!devlink_sb) {
8706 err = -ENOMEM;
8707 goto unlock;
8708 }
8709 devlink_sb->index = sb_index;
8710 devlink_sb->size = size;
8711 devlink_sb->ingress_pools_count = ingress_pools_count;
8712 devlink_sb->egress_pools_count = egress_pools_count;
8713 devlink_sb->ingress_tc_count = ingress_tc_count;
8714 devlink_sb->egress_tc_count = egress_tc_count;
8715 list_add_tail(&devlink_sb->list, &devlink->sb_list);
8716unlock:
2406e7e5 8717 mutex_unlock(&devlink->lock);
bf797471
JP		 8718 return err;
8719}
8720EXPORT_SYMBOL_GPL(devlink_sb_register);
8721
8722void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index)
8723{
8724 struct devlink_sb *devlink_sb;
8725
2406e7e5 8726 mutex_lock(&devlink->lock);
bf797471
JP		 8727 devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
8728 WARN_ON(!devlink_sb);
8729 list_del(&devlink_sb->list);
2406e7e5 8730 mutex_unlock(&devlink->lock);
bf797471
JP		 8731 kfree(devlink_sb);
8732}
8733EXPORT_SYMBOL_GPL(devlink_sb_unregister);
8734
1555d204
AS		 8735/**
8736 * devlink_dpipe_headers_register - register dpipe headers
8737 *
8738 * @devlink: devlink
8739 * @dpipe_headers: dpipe header array
8740 *
8741 * Register the headers supported by hardware.
8742 */
8743int devlink_dpipe_headers_register(struct devlink *devlink,
8744 struct devlink_dpipe_headers *dpipe_headers)
8745{
2406e7e5 8746 mutex_lock(&devlink->lock);
1555d204 8747 devlink->dpipe_headers = dpipe_headers;
2406e7e5 8748 mutex_unlock(&devlink->lock);
1555d204
AS		 8749 return 0;
8750}
8751EXPORT_SYMBOL_GPL(devlink_dpipe_headers_register);
8752
8753/**
8754 * devlink_dpipe_headers_unregister - unregister dpipe headers
8755 *
8756 * @devlink: devlink
8757 *
8758 * Unregister the headers supported by hardware.
8759 */
8760void devlink_dpipe_headers_unregister(struct devlink *devlink)
8761{
2406e7e5 8762 mutex_lock(&devlink->lock);
1555d204 8763 devlink->dpipe_headers = NULL;
2406e7e5 8764 mutex_unlock(&devlink->lock);
1555d204
AS		 8765}
8766EXPORT_SYMBOL_GPL(devlink_dpipe_headers_unregister);
8767
8768/**
8769 * devlink_dpipe_table_counter_enabled - check if counter allocation
8770 * required
8771 * @devlink: devlink
8772 * @table_name: tables name
8773 *
8774 * Used by driver to check if counter allocation is required.
8775 * After counter allocation is turned on the table entries
8776 * are updated to include counter statistics.
8777 *
8778 * After that point on the driver must respect the counter
8779 * state so that each entry added to the table is added
8780 * with a counter.
8781 */
8782bool devlink_dpipe_table_counter_enabled(struct devlink *devlink,
8783 const char *table_name)
8784{
8785 struct devlink_dpipe_table *table;
8786 bool enabled;
8787
8788 rcu_read_lock();
8789 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2eb51c75 8790 table_name, devlink);
1555d204
AS		 8791 enabled = false;
8792 if (table)
8793 enabled = table->counters_enabled;
8794 rcu_read_unlock();
8795 return enabled;
8796}
8797EXPORT_SYMBOL_GPL(devlink_dpipe_table_counter_enabled);
8798
8799/**
8800 * devlink_dpipe_table_register - register dpipe table
8801 *
8802 * @devlink: devlink
8803 * @table_name: table name
8804 * @table_ops: table ops
8805 * @priv: priv
1555d204
AS		 8806 * @counter_control_extern: external control for counters
8807 */
8808int devlink_dpipe_table_register(struct devlink *devlink,
8809 const char *table_name,
8810 struct devlink_dpipe_table_ops *table_ops,
ffd3cdcc 8811 void *priv, bool counter_control_extern)
1555d204
AS		 8812{
8813 struct devlink_dpipe_table *table;
6132c1d9 8814 int err = 0;
1555d204 8815
ffd3cdcc
AS		 8816 if (WARN_ON(!table_ops->size_get))
8817 return -EINVAL;
8818
6132c1d9
MB		 8819 mutex_lock(&devlink->lock);
8820
2eb51c75
MB		 8821 if (devlink_dpipe_table_find(&devlink->dpipe_table_list, table_name,
8822 devlink)) {
6132c1d9
MB		 8823 err = -EEXIST;
8824 goto unlock;
8825 }
8826
1555d204 8827 table = kzalloc(sizeof(*table), GFP_KERNEL);
6132c1d9
MB		 8828 if (!table) {
8829 err = -ENOMEM;
8830 goto unlock;
8831 }
1555d204
AS		 8832
8833 table->name = table_name;
8834 table->table_ops = table_ops;
8835 table->priv = priv;
1555d204
AS		 8836 table->counter_control_extern = counter_control_extern;
8837
1555d204 8838 list_add_tail_rcu(&table->list, &devlink->dpipe_table_list);
6132c1d9 8839unlock:
2406e7e5 8840 mutex_unlock(&devlink->lock);
6132c1d9 8841 return err;
1555d204
AS		 8842}
8843EXPORT_SYMBOL_GPL(devlink_dpipe_table_register);
8844
8845/**
8846 * devlink_dpipe_table_unregister - unregister dpipe table
8847 *
8848 * @devlink: devlink
8849 * @table_name: table name
8850 */
8851void devlink_dpipe_table_unregister(struct devlink *devlink,
8852 const char *table_name)
8853{
8854 struct devlink_dpipe_table *table;
8855
2406e7e5 8856 mutex_lock(&devlink->lock);
1555d204 8857 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2eb51c75 8858 table_name, devlink);
1555d204
AS		 8859 if (!table)
8860 goto unlock;
8861 list_del_rcu(&table->list);
2406e7e5 8862 mutex_unlock(&devlink->lock);
1555d204
AS		 8863 kfree_rcu(table, rcu);
8864 return;
8865unlock:
2406e7e5 8866 mutex_unlock(&devlink->lock);
1555d204
AS		 8867}
8868EXPORT_SYMBOL_GPL(devlink_dpipe_table_unregister);
8869
d9f9b9a4
AS		 8870/**
8871 * devlink_resource_register - devlink resource register
8872 *
8873 * @devlink: devlink
8874 * @resource_name: resource's name
d9f9b9a4
AS		 8875 * @resource_size: resource's size
8876 * @resource_id: resource's id
eeaadd82
JK		 8877 * @parent_resource_id: resource's parent id
8878 * @size_params: size parameters
321f7ab0
DR		 8879 *
8880 * Generic resources should reuse the same names across drivers.
8881 * Please see the generic resources list at:
8882 * Documentation/networking/devlink/devlink-resource.rst
d9f9b9a4
AS		 8883 */
8884int devlink_resource_register(struct devlink *devlink,
8885 const char *resource_name,
d9f9b9a4
AS		 8886 u64 resource_size,
8887 u64 resource_id,
8888 u64 parent_resource_id,
fc56be47 8889 const struct devlink_resource_size_params *size_params)
d9f9b9a4
AS		 8890{
8891 struct devlink_resource *resource;
8892 struct list_head *resource_list;
14530746 8893 bool top_hierarchy;
d9f9b9a4
AS		 8894 int err = 0;
8895
14530746
DA		 8896 top_hierarchy = parent_resource_id == DEVLINK_RESOURCE_ID_PARENT_TOP;
8897
d9f9b9a4
AS		 8898 mutex_lock(&devlink->lock);
8899 resource = devlink_resource_find(devlink, NULL, resource_id);
8900 if (resource) {
8901 err = -EINVAL;
8902 goto out;
8903 }
8904
8905 resource = kzalloc(sizeof(*resource), GFP_KERNEL);
8906 if (!resource) {
8907 err = -ENOMEM;
8908 goto out;
8909 }
8910
8911 if (top_hierarchy) {
8912 resource_list = &devlink->resource_list;
8913 } else {
8914 struct devlink_resource *parent_resource;
8915
8916 parent_resource = devlink_resource_find(devlink, NULL,
8917 parent_resource_id);
8918 if (parent_resource) {
8919 resource_list = &parent_resource->resource_list;
8920 resource->parent = parent_resource;
8921 } else {
b75703de 8922 kfree(resource);
d9f9b9a4
AS		 8923 err = -EINVAL;
8924 goto out;
8925 }
8926 }
8927
8928 resource->name = resource_name;
8929 resource->size = resource_size;
8930 resource->size_new = resource_size;
8931 resource->id = resource_id;
d9f9b9a4 8932 resource->size_valid = true;
77d27096
JP		 8933 memcpy(&resource->size_params, size_params,
8934 sizeof(resource->size_params));
d9f9b9a4
AS		 8935 INIT_LIST_HEAD(&resource->resource_list);
8936 list_add_tail(&resource->list, resource_list);
8937out:
8938 mutex_unlock(&devlink->lock);
8939 return err;
8940}
8941EXPORT_SYMBOL_GPL(devlink_resource_register);
8942
8943/**
8944 * devlink_resources_unregister - free all resources
8945 *
8946 * @devlink: devlink
8947 * @resource: resource
8948 */
8949void devlink_resources_unregister(struct devlink *devlink,
8950 struct devlink_resource *resource)
8951{
8952 struct devlink_resource *tmp, *child_resource;
8953 struct list_head *resource_list;
8954
8955 if (resource)
8956 resource_list = &resource->resource_list;
8957 else
8958 resource_list = &devlink->resource_list;
8959
8960 if (!resource)
8961 mutex_lock(&devlink->lock);
8962
8963 list_for_each_entry_safe(child_resource, tmp, resource_list, list) {
8964 devlink_resources_unregister(devlink, child_resource);
8965 list_del(&child_resource->list);
8966 kfree(child_resource);
8967 }
8968
8969 if (!resource)
8970 mutex_unlock(&devlink->lock);
8971}
8972EXPORT_SYMBOL_GPL(devlink_resources_unregister);
8973
8974/**
8975 * devlink_resource_size_get - get and update size
8976 *
8977 * @devlink: devlink
8978 * @resource_id: the requested resource id
8979 * @p_resource_size: ptr to update
8980 */
8981int devlink_resource_size_get(struct devlink *devlink,
8982 u64 resource_id,
8983 u64 *p_resource_size)
8984{
8985 struct devlink_resource *resource;
8986 int err = 0;
8987
8988 mutex_lock(&devlink->lock);
8989 resource = devlink_resource_find(devlink, NULL, resource_id);
8990 if (!resource) {
8991 err = -EINVAL;
8992 goto out;
8993 }
8994 *p_resource_size = resource->size_new;
8995 resource->size = resource->size_new;
8996out:
8997 mutex_unlock(&devlink->lock);
8998 return err;
8999}
9000EXPORT_SYMBOL_GPL(devlink_resource_size_get);
9001
56dc7cd0
AS		 9002/**
9003 * devlink_dpipe_table_resource_set - set the resource id
9004 *
9005 * @devlink: devlink
9006 * @table_name: table name
9007 * @resource_id: resource id
9008 * @resource_units: number of resource's units consumed per table's entry
9009 */
9010int devlink_dpipe_table_resource_set(struct devlink *devlink,
9011 const char *table_name, u64 resource_id,
9012 u64 resource_units)
9013{
9014 struct devlink_dpipe_table *table;
9015 int err = 0;
9016
9017 mutex_lock(&devlink->lock);
9018 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2eb51c75 9019 table_name, devlink);
56dc7cd0
AS		 9020 if (!table) {
9021 err = -EINVAL;
9022 goto out;
9023 }
9024 table->resource_id = resource_id;
9025 table->resource_units = resource_units;
9026 table->resource_valid = true;
9027out:
9028 mutex_unlock(&devlink->lock);
9029 return err;
9030}
9031EXPORT_SYMBOL_GPL(devlink_dpipe_table_resource_set);
9032
fc56be47
JP		 9033/**
9034 * devlink_resource_occ_get_register - register occupancy getter
9035 *
9036 * @devlink: devlink
9037 * @resource_id: resource id
9038 * @occ_get: occupancy getter callback
9039 * @occ_get_priv: occupancy getter callback priv
9040 */
9041void devlink_resource_occ_get_register(struct devlink *devlink,
9042 u64 resource_id,
9043 devlink_resource_occ_get_t *occ_get,
9044 void *occ_get_priv)
9045{
9046 struct devlink_resource *resource;
9047
9048 mutex_lock(&devlink->lock);
9049 resource = devlink_resource_find(devlink, NULL, resource_id);
9050 if (WARN_ON(!resource))
9051 goto out;
9052 WARN_ON(resource->occ_get);
9053
9054 resource->occ_get = occ_get;
9055 resource->occ_get_priv = occ_get_priv;
9056out:
9057 mutex_unlock(&devlink->lock);
9058}
9059EXPORT_SYMBOL_GPL(devlink_resource_occ_get_register);
9060
9061/**
9062 * devlink_resource_occ_get_unregister - unregister occupancy getter
9063 *
9064 * @devlink: devlink
9065 * @resource_id: resource id
9066 */
9067void devlink_resource_occ_get_unregister(struct devlink *devlink,
9068 u64 resource_id)
9069{
9070 struct devlink_resource *resource;
9071
9072 mutex_lock(&devlink->lock);
9073 resource = devlink_resource_find(devlink, NULL, resource_id);
9074 if (WARN_ON(!resource))
9075 goto out;
9076 WARN_ON(!resource->occ_get);
9077
9078 resource->occ_get = NULL;
9079 resource->occ_get_priv = NULL;
9080out:
9081 mutex_unlock(&devlink->lock);
9082}
9083EXPORT_SYMBOL_GPL(devlink_resource_occ_get_unregister);
9084
39e6160e
VV		 9085static int devlink_param_verify(const struct devlink_param *param)
9086{
9087 if (!param || !param->name || !param->supported_cmodes)
9088 return -EINVAL;
9089 if (param->generic)
9090 return devlink_param_generic_verify(param);
9091 else
9092 return devlink_param_driver_verify(param);
9093}
9094
9095static int __devlink_params_register(struct devlink *devlink,
c1e5786d 9096 unsigned int port_index,
39e6160e
VV		 9097 struct list_head *param_list,
9098 const struct devlink_param *params,
c1e5786d
VV		 9099 size_t params_count,
9100 enum devlink_command reg_cmd,
9101 enum devlink_command unreg_cmd)
eabaef18
MS		 9102{
9103 const struct devlink_param *param = params;
9104 int i;
9105 int err;
9106
9107 mutex_lock(&devlink->lock);
9108 for (i = 0; i < params_count; i++, param++) {
39e6160e
VV		 9109 err = devlink_param_verify(param);
9110 if (err)
eabaef18 9111 goto rollback;
39e6160e 9112
c1e5786d
VV		 9113 err = devlink_param_register_one(devlink, port_index,
9114 param_list, param, reg_cmd);
eabaef18
MS		 9115 if (err)
9116 goto rollback;
9117 }
9118
9119 mutex_unlock(&devlink->lock);
9120 return 0;
9121
9122rollback:
9123 if (!i)
9124 goto unlock;
9125 for (param--; i > 0; i--, param--)
c1e5786d
VV		 9126 devlink_param_unregister_one(devlink, port_index, param_list,
9127 param, unreg_cmd);
eabaef18
MS		 9128unlock:
9129 mutex_unlock(&devlink->lock);
9130 return err;
9131}
39e6160e
VV		 9132
9133static void __devlink_params_unregister(struct devlink *devlink,
c1e5786d 9134 unsigned int port_index,
39e6160e
VV		 9135 struct list_head *param_list,
9136 const struct devlink_param *params,
c1e5786d
VV		 9137 size_t params_count,
9138 enum devlink_command cmd)
39e6160e
VV		 9139{
9140 const struct devlink_param *param = params;
9141 int i;
9142
9143 mutex_lock(&devlink->lock);
9144 for (i = 0; i < params_count; i++, param++)
c1e5786d
VV		 9145 devlink_param_unregister_one(devlink, 0, param_list, param,
9146 cmd);
39e6160e
VV		 9147 mutex_unlock(&devlink->lock);
9148}
9149
9150/**
9151 * devlink_params_register - register configuration parameters
9152 *
9153 * @devlink: devlink
9154 * @params: configuration parameters array
9155 * @params_count: number of parameters provided
9156 *
9157 * Register the configuration parameters supported by the driver.
9158 */
9159int devlink_params_register(struct devlink *devlink,
9160 const struct devlink_param *params,
9161 size_t params_count)
9162{
c1e5786d
VV		 9163 return __devlink_params_register(devlink, 0, &devlink->param_list,
9164 params, params_count,
9165 DEVLINK_CMD_PARAM_NEW,
9166 DEVLINK_CMD_PARAM_DEL);
39e6160e 9167}
eabaef18
MS		 9168EXPORT_SYMBOL_GPL(devlink_params_register);
9169
9170/**
9171 * devlink_params_unregister - unregister configuration parameters
9172 * @devlink: devlink
9173 * @params: configuration parameters to unregister
9174 * @params_count: number of parameters provided
9175 */
9176void devlink_params_unregister(struct devlink *devlink,
9177 const struct devlink_param *params,
9178 size_t params_count)
9179{
c1e5786d
VV		 9180 return __devlink_params_unregister(devlink, 0, &devlink->param_list,
9181 params, params_count,
9182 DEVLINK_CMD_PARAM_DEL);
eabaef18
MS		 9183}
9184EXPORT_SYMBOL_GPL(devlink_params_unregister);
9185
7c62cfb8
JP		 9186/**
9187 * devlink_params_publish - publish configuration parameters
9188 *
9189 * @devlink: devlink
9190 *
9191 * Publish previously registered configuration parameters.
9192 */
9193void devlink_params_publish(struct devlink *devlink)
9194{
9195 struct devlink_param_item *param_item;
9196
9197 list_for_each_entry(param_item, &devlink->param_list, list) {
9198 if (param_item->published)
9199 continue;
9200 param_item->published = true;
9201 devlink_param_notify(devlink, 0, param_item,
9202 DEVLINK_CMD_PARAM_NEW);
9203 }
9204}
9205EXPORT_SYMBOL_GPL(devlink_params_publish);
9206
9207/**
9208 * devlink_params_unpublish - unpublish configuration parameters
9209 *
9210 * @devlink: devlink
9211 *
9212 * Unpublish previously registered configuration parameters.
9213 */
9214void devlink_params_unpublish(struct devlink *devlink)
9215{
9216 struct devlink_param_item *param_item;
9217
9218 list_for_each_entry(param_item, &devlink->param_list, list) {
9219 if (!param_item->published)
9220 continue;
9221 param_item->published = false;
9222 devlink_param_notify(devlink, 0, param_item,
9223 DEVLINK_CMD_PARAM_DEL);
9224 }
9225}
9226EXPORT_SYMBOL_GPL(devlink_params_unpublish);
9227
39e6160e
VV		 9228/**
9229 * devlink_port_params_register - register port configuration parameters
9230 *
9231 * @devlink_port: devlink port
9232 * @params: configuration parameters array
9233 * @params_count: number of parameters provided
9234 *
9235 * Register the configuration parameters supported by the port.
9236 */
9237int devlink_port_params_register(struct devlink_port *devlink_port,
9238 const struct devlink_param *params,
9239 size_t params_count)
9240{
9241 return __devlink_params_register(devlink_port->devlink,
c1e5786d 9242 devlink_port->index,
39e6160e 9243 &devlink_port->param_list, params,
c1e5786d
VV		 9244 params_count,
9245 DEVLINK_CMD_PORT_PARAM_NEW,
9246 DEVLINK_CMD_PORT_PARAM_DEL);
39e6160e
VV		 9247}
9248EXPORT_SYMBOL_GPL(devlink_port_params_register);
9249
9250/**
9251 * devlink_port_params_unregister - unregister port configuration
9252 * parameters
9253 *
9254 * @devlink_port: devlink port
9255 * @params: configuration parameters array
9256 * @params_count: number of parameters provided
9257 */
9258void devlink_port_params_unregister(struct devlink_port *devlink_port,
9259 const struct devlink_param *params,
9260 size_t params_count)
9261{
9262 return __devlink_params_unregister(devlink_port->devlink,
c1e5786d 9263 devlink_port->index,
39e6160e 9264 &devlink_port->param_list,
c1e5786d
VV		 9265 params, params_count,
9266 DEVLINK_CMD_PORT_PARAM_DEL);
39e6160e
VV		 9267}
9268EXPORT_SYMBOL_GPL(devlink_port_params_unregister);
9269
ffd19b9a
VV		 9270static int
9271__devlink_param_driverinit_value_get(struct list_head *param_list, u32 param_id,
9272 union devlink_param_value *init_val)
ec01aeb1
MS		 9273{
9274 struct devlink_param_item *param_item;
9275
ffd19b9a 9276 param_item = devlink_param_find_by_id(param_list, param_id);
ec01aeb1
MS		 9277 if (!param_item)
9278 return -EINVAL;
9279
9280 if (!param_item->driverinit_value_valid ||
9281 !devlink_param_cmode_is_supported(param_item->param,
9282 DEVLINK_PARAM_CMODE_DRIVERINIT))
9283 return -EOPNOTSUPP;
9284
1276534c
MS		 9285 if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
9286 strcpy(init_val->vstr, param_item->driverinit_value.vstr);
9287 else
9288 *init_val = param_item->driverinit_value;
ec01aeb1
MS		 9289
9290 return 0;
9291}
ffd19b9a 9292
5473a7bd
VV		 9293static int
9294__devlink_param_driverinit_value_set(struct devlink *devlink,
c1e5786d 9295 unsigned int port_index,
5473a7bd
VV		 9296 struct list_head *param_list, u32 param_id,
9297 union devlink_param_value init_val,
9298 enum devlink_command cmd)
9299{
9300 struct devlink_param_item *param_item;
9301
9302 param_item = devlink_param_find_by_id(param_list, param_id);
9303 if (!param_item)
9304 return -EINVAL;
9305
9306 if (!devlink_param_cmode_is_supported(param_item->param,
9307 DEVLINK_PARAM_CMODE_DRIVERINIT))
9308 return -EOPNOTSUPP;
9309
9310 if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
9311 strcpy(param_item->driverinit_value.vstr, init_val.vstr);
9312 else
9313 param_item->driverinit_value = init_val;
9314 param_item->driverinit_value_valid = true;
9315
c1e5786d 9316 devlink_param_notify(devlink, port_index, param_item, cmd);
5473a7bd
VV		 9317 return 0;
9318}
9319
ffd19b9a
VV		 9320/**
9321 * devlink_param_driverinit_value_get - get configuration parameter
9322 * value for driver initializing
9323 *
9324 * @devlink: devlink
9325 * @param_id: parameter ID
9326 * @init_val: value of parameter in driverinit configuration mode
9327 *
9328 * This function should be used by the driver to get driverinit
9329 * configuration for initialization after reload command.
9330 */
9331int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
9332 union devlink_param_value *init_val)
9333{
69d56e0e 9334 if (!devlink_reload_supported(devlink->ops))
ffd19b9a
VV		 9335 return -EOPNOTSUPP;
9336
9337 return __devlink_param_driverinit_value_get(&devlink->param_list,
9338 param_id, init_val);
9339}
ec01aeb1
MS		 9340EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_get);
9341
9342/**
9343 * devlink_param_driverinit_value_set - set value of configuration
9344 * parameter for driverinit
9345 * configuration mode
9346 *
9347 * @devlink: devlink
9348 * @param_id: parameter ID
9349 * @init_val: value of parameter to set for driverinit configuration mode
9350 *
9351 * This function should be used by the driver to set driverinit
9352 * configuration mode default value.
9353 */
9354int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
9355 union devlink_param_value init_val)
9356{
c1e5786d 9357 return __devlink_param_driverinit_value_set(devlink, 0,
5473a7bd
VV		 9358 &devlink->param_list,
9359 param_id, init_val,
9360 DEVLINK_CMD_PARAM_NEW);
ec01aeb1
MS		 9361}
9362EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_set);
9363
ffd19b9a
VV		 9364/**
9365 * devlink_port_param_driverinit_value_get - get configuration parameter
9366 * value for driver initializing
9367 *
9368 * @devlink_port: devlink_port
9369 * @param_id: parameter ID
9370 * @init_val: value of parameter in driverinit configuration mode
9371 *
9372 * This function should be used by the driver to get driverinit
9373 * configuration for initialization after reload command.
9374 */
9375int devlink_port_param_driverinit_value_get(struct devlink_port *devlink_port,
9376 u32 param_id,
9377 union devlink_param_value *init_val)
9378{
9379 struct devlink *devlink = devlink_port->devlink;
9380
69d56e0e 9381 if (!devlink_reload_supported(devlink->ops))
ffd19b9a
VV		 9382 return -EOPNOTSUPP;
9383
9384 return __devlink_param_driverinit_value_get(&devlink_port->param_list,
9385 param_id, init_val);
9386}
9387EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_get);
9388
5473a7bd
VV		 9389/**
9390 * devlink_port_param_driverinit_value_set - set value of configuration
9391 * parameter for driverinit
9392 * configuration mode
9393 *
9394 * @devlink_port: devlink_port
9395 * @param_id: parameter ID
9396 * @init_val: value of parameter to set for driverinit configuration mode
9397 *
9398 * This function should be used by the driver to set driverinit
9399 * configuration mode default value.
9400 */
9401int devlink_port_param_driverinit_value_set(struct devlink_port *devlink_port,
9402 u32 param_id,
9403 union devlink_param_value init_val)
9404{
9405 return __devlink_param_driverinit_value_set(devlink_port->devlink,
c1e5786d 9406 devlink_port->index,
5473a7bd 9407 &devlink_port->param_list,
c1e5786d
VV		 9408 param_id, init_val,
9409 DEVLINK_CMD_PORT_PARAM_NEW);
5473a7bd
VV		 9410}
9411EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_set);
9412
ea601e17
MS		 9413/**
9414 * devlink_param_value_changed - notify devlink on a parameter's value
9415 * change. Should be called by the driver
9416 * right after the change.
9417 *
9418 * @devlink: devlink
9419 * @param_id: parameter ID
9420 *
9421 * This function should be used by the driver to notify devlink on value
9422 * change, excluding driverinit configuration mode.
9423 * For driverinit configuration mode driver should use the function
ea601e17
MS		 9424 */
9425void devlink_param_value_changed(struct devlink *devlink, u32 param_id)
9426{
9427 struct devlink_param_item *param_item;
9428
9429 param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
9430 WARN_ON(!param_item);
9431
c1e5786d 9432 devlink_param_notify(devlink, 0, param_item, DEVLINK_CMD_PARAM_NEW);
ea601e17
MS		 9433}
9434EXPORT_SYMBOL_GPL(devlink_param_value_changed);
9435
c1e5786d
VV		 9436/**
9437 * devlink_port_param_value_changed - notify devlink on a parameter's value
9438 * change. Should be called by the driver
9439 * right after the change.
9440 *
9441 * @devlink_port: devlink_port
9442 * @param_id: parameter ID
9443 *
9444 * This function should be used by the driver to notify devlink on value
9445 * change, excluding driverinit configuration mode.
9446 * For driverinit configuration mode driver should use the function
9447 * devlink_port_param_driverinit_value_set() instead.
9448 */
9449void devlink_port_param_value_changed(struct devlink_port *devlink_port,
9450 u32 param_id)
9451{
9452 struct devlink_param_item *param_item;
9453
9454 param_item = devlink_param_find_by_id(&devlink_port->param_list,
9455 param_id);
9456 WARN_ON(!param_item);
9457
9458 devlink_param_notify(devlink_port->devlink, devlink_port->index,
9459 param_item, DEVLINK_CMD_PORT_PARAM_NEW);
9460}
9461EXPORT_SYMBOL_GPL(devlink_port_param_value_changed);
9462
bde74ad1
MS		 9463/**
9464 * devlink_param_value_str_fill - Safely fill-up the string preventing
9465 * from overflow of the preallocated buffer
9466 *
9467 * @dst_val: destination devlink_param_value
9468 * @src: source buffer
9469 */
9470void devlink_param_value_str_fill(union devlink_param_value *dst_val,
9471 const char *src)
9472{
9473 size_t len;
9474
9475 len = strlcpy(dst_val->vstr, src, __DEVLINK_PARAM_MAX_STRING_VALUE);
9476 WARN_ON(len >= __DEVLINK_PARAM_MAX_STRING_VALUE);
9477}
9478EXPORT_SYMBOL_GPL(devlink_param_value_str_fill);
9479
b16ebe92
AV		 9480/**
9481 * devlink_region_create - create a new address region
9482 *
9483 * @devlink: devlink
e8937681 9484 * @ops: region operations and name
b16ebe92
AV		 9485 * @region_max_snapshots: Maximum supported number of snapshots for region
9486 * @region_size: size of region
9487 */
e8937681
JK		 9488struct devlink_region *
9489devlink_region_create(struct devlink *devlink,
9490 const struct devlink_region_ops *ops,
9491 u32 region_max_snapshots, u64 region_size)
b16ebe92
AV		 9492{
9493 struct devlink_region *region;
9494 int err = 0;
9495
a0a09f6b
JK		 9496 if (WARN_ON(!ops) || WARN_ON(!ops->destructor))
9497 return ERR_PTR(-EINVAL);
9498
b16ebe92
AV		 9499 mutex_lock(&devlink->lock);
9500
e8937681 9501 if (devlink_region_get_by_name(devlink, ops->name)) {
b16ebe92
AV		 9502 err = -EEXIST;
9503 goto unlock;
9504 }
9505
9506 region = kzalloc(sizeof(*region), GFP_KERNEL);
9507 if (!region) {
9508 err = -ENOMEM;
9509 goto unlock;
9510 }
9511
9512 region->devlink = devlink;
9513 region->max_snapshots = region_max_snapshots;
e8937681 9514 region->ops = ops;
b16ebe92
AV		 9515 region->size = region_size;
9516 INIT_LIST_HEAD(&region->snapshot_list);
9517 list_add_tail(&region->list, &devlink->region_list);
866319bb 9518 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
b16ebe92
AV		 9519
9520 mutex_unlock(&devlink->lock);
9521 return region;
9522
9523unlock:
9524 mutex_unlock(&devlink->lock);
9525 return ERR_PTR(err);
9526}
9527EXPORT_SYMBOL_GPL(devlink_region_create);
9528
544e7c33
AL		 9529/**
9530 * devlink_port_region_create - create a new address region for a port
9531 *
9532 * @port: devlink port
9533 * @ops: region operations and name
9534 * @region_max_snapshots: Maximum supported number of snapshots for region
9535 * @region_size: size of region
9536 */
9537struct devlink_region *
9538devlink_port_region_create(struct devlink_port *port,
9539 const struct devlink_port_region_ops *ops,
9540 u32 region_max_snapshots, u64 region_size)
9541{
9542 struct devlink *devlink = port->devlink;
9543 struct devlink_region *region;
9544 int err = 0;
9545
9546 if (WARN_ON(!ops) || WARN_ON(!ops->destructor))
9547 return ERR_PTR(-EINVAL);
9548
9549 mutex_lock(&devlink->lock);
9550
9551 if (devlink_port_region_get_by_name(port, ops->name)) {
9552 err = -EEXIST;
9553 goto unlock;
9554 }
9555
9556 region = kzalloc(sizeof(*region), GFP_KERNEL);
9557 if (!region) {
9558 err = -ENOMEM;
9559 goto unlock;
9560 }
9561
9562 region->devlink = devlink;
9563 region->port = port;
9564 region->max_snapshots = region_max_snapshots;
9565 region->port_ops = ops;
9566 region->size = region_size;
9567 INIT_LIST_HEAD(&region->snapshot_list);
9568 list_add_tail(&region->list, &port->region_list);
9569 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
9570
9571 mutex_unlock(&devlink->lock);
9572 return region;
9573
9574unlock:
9575 mutex_unlock(&devlink->lock);
9576 return ERR_PTR(err);
9577}
9578EXPORT_SYMBOL_GPL(devlink_port_region_create);
9579
b16ebe92
AV		 9580/**
9581 * devlink_region_destroy - destroy address region
9582 *
9583 * @region: devlink region to destroy
9584 */
9585void devlink_region_destroy(struct devlink_region *region)
9586{
9587 struct devlink *devlink = region->devlink;
d7e52722 9588 struct devlink_snapshot *snapshot, *ts;
b16ebe92
AV		 9589
9590 mutex_lock(&devlink->lock);
d7e52722
AV		 9591
9592 /* Free all snapshots of region */
9593 list_for_each_entry_safe(snapshot, ts, &region->snapshot_list, list)
92b49822 9594 devlink_region_snapshot_del(region, snapshot);
d7e52722 9595
b16ebe92 9596 list_del(&region->list);
866319bb
AV		 9597
9598 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL);
b16ebe92
AV		 9599 mutex_unlock(&devlink->lock);
9600 kfree(region);
9601}
9602EXPORT_SYMBOL_GPL(devlink_region_destroy);
9603
ccadfa44 9604/**
b0efcae5 9605 * devlink_region_snapshot_id_get - get snapshot ID
ccadfa44
AV		 9606 *
9607 * This callback should be called when adding a new snapshot,
9608 * Driver should use the same id for multiple snapshots taken
9609 * on multiple regions at the same time/by the same trigger.
9610 *
12102436
JK		 9611 * The caller of this function must use devlink_region_snapshot_id_put
9612 * when finished creating regions using this id.
9613 *
7ef19d3b
JK		 9614 * Returns zero on success, or a negative error code on failure.
9615 *
ccadfa44 9616 * @devlink: devlink
7ef19d3b 9617 * @id: storage to return id
ccadfa44 9618 */
7ef19d3b 9619int devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id)
ccadfa44 9620{
7ef19d3b 9621 int err;
ccadfa44
AV		 9622
9623 mutex_lock(&devlink->lock);
7ef19d3b 9624 err = __devlink_region_snapshot_id_get(devlink, id);
ccadfa44
AV		 9625 mutex_unlock(&devlink->lock);
9626
7ef19d3b 9627 return err;
ccadfa44 9628}
b0efcae5 9629EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_get);
ccadfa44 9630
12102436
JK		 9631/**
9632 * devlink_region_snapshot_id_put - put snapshot ID reference
9633 *
9634 * This should be called by a driver after finishing creating snapshots
9635 * with an id. Doing so ensures that the ID can later be released in the
9636 * event that all snapshots using it have been destroyed.
9637 *
9638 * @devlink: devlink
9639 * @id: id to release reference on
9640 */
9641void devlink_region_snapshot_id_put(struct devlink *devlink, u32 id)
9642{
9643 mutex_lock(&devlink->lock);
9644 __devlink_snapshot_id_decrement(devlink, id);
9645 mutex_unlock(&devlink->lock);
9646}
9647EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_put);
9648
d7e52722
AV		 9649/**
9650 * devlink_region_snapshot_create - create a new snapshot
9651 * This will add a new snapshot of a region. The snapshot
9652 * will be stored on the region struct and can be accessed
6d82f67e 9653 * from devlink. This is useful for future analyses of snapshots.
d7e52722
AV		 9654 * Multiple snapshots can be created on a region.
9655 * The @snapshot_id should be obtained using the getter function.
9656 *
eeaadd82 9657 * @region: devlink region of the snapshot
d7e52722
AV		 9658 * @data: snapshot data
9659 * @snapshot_id: snapshot id to be created
d7e52722 9660 */
3a5e5234 9661int devlink_region_snapshot_create(struct devlink_region *region,
a0a09f6b 9662 u8 *data, u32 snapshot_id)
d7e52722
AV		 9663{
9664 struct devlink *devlink = region->devlink;
d7e52722
AV		 9665 int err;
9666
9667 mutex_lock(&devlink->lock);
cf80faee 9668 err = __devlink_region_snapshot_create(region, data, snapshot_id);
d7e52722 9669 mutex_unlock(&devlink->lock);
d7e52722 9670
d7e52722
AV		 9671 return err;
9672}
9673EXPORT_SYMBOL_GPL(devlink_region_snapshot_create);
9674
0f420b6c
IS		 9675#define DEVLINK_TRAP(_id, _type) \
9676 { \
9677 .type = DEVLINK_TRAP_TYPE_##_type, \
9678 .id = DEVLINK_TRAP_GENERIC_ID_##_id, \
9679 .name = DEVLINK_TRAP_GENERIC_NAME_##_id, \
9680 }
9681
9682static const struct devlink_trap devlink_trap_generic[] = {
391203ab
IS		 9683 DEVLINK_TRAP(SMAC_MC, DROP),
9684 DEVLINK_TRAP(VLAN_TAG_MISMATCH, DROP),
9685 DEVLINK_TRAP(INGRESS_VLAN_FILTER, DROP),
9686 DEVLINK_TRAP(INGRESS_STP_FILTER, DROP),
9687 DEVLINK_TRAP(EMPTY_TX_LIST, DROP),
9688 DEVLINK_TRAP(PORT_LOOPBACK_FILTER, DROP),
9689 DEVLINK_TRAP(BLACKHOLE_ROUTE, DROP),
9690 DEVLINK_TRAP(TTL_ERROR, EXCEPTION),
9691 DEVLINK_TRAP(TAIL_DROP, DROP),
6896cc4d
AC		 9692 DEVLINK_TRAP(NON_IP_PACKET, DROP),
9693 DEVLINK_TRAP(UC_DIP_MC_DMAC, DROP),
9694 DEVLINK_TRAP(DIP_LB, DROP),
9695 DEVLINK_TRAP(SIP_MC, DROP),
9696 DEVLINK_TRAP(SIP_LB, DROP),
9697 DEVLINK_TRAP(CORRUPTED_IP_HDR, DROP),
9698 DEVLINK_TRAP(IPV4_SIP_BC, DROP),
9699 DEVLINK_TRAP(IPV6_MC_DIP_RESERVED_SCOPE, DROP),
9700 DEVLINK_TRAP(IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE, DROP),
3b063ae5
AC		 9701 DEVLINK_TRAP(MTU_ERROR, EXCEPTION),
9702 DEVLINK_TRAP(UNRESOLVED_NEIGH, EXCEPTION),
9703 DEVLINK_TRAP(RPF, EXCEPTION),
9704 DEVLINK_TRAP(REJECT_ROUTE, EXCEPTION),
9705 DEVLINK_TRAP(IPV4_LPM_UNICAST_MISS, EXCEPTION),
9706 DEVLINK_TRAP(IPV6_LPM_UNICAST_MISS, EXCEPTION),
95f0ead8 9707 DEVLINK_TRAP(NON_ROUTABLE, DROP),
13c056ec 9708 DEVLINK_TRAP(DECAP_ERROR, EXCEPTION),
c3cae491 9709 DEVLINK_TRAP(OVERLAY_SMAC_MC, DROP),
ecd942a0
JP		 9710 DEVLINK_TRAP(INGRESS_FLOW_ACTION_DROP, DROP),
9711 DEVLINK_TRAP(EGRESS_FLOW_ACTION_DROP, DROP),
515eac67
IS		 9712 DEVLINK_TRAP(STP, CONTROL),
9713 DEVLINK_TRAP(LACP, CONTROL),
9714 DEVLINK_TRAP(LLDP, CONTROL),
9715 DEVLINK_TRAP(IGMP_QUERY, CONTROL),
9716 DEVLINK_TRAP(IGMP_V1_REPORT, CONTROL),
9717 DEVLINK_TRAP(IGMP_V2_REPORT, CONTROL),
9718 DEVLINK_TRAP(IGMP_V3_REPORT, CONTROL),
9719 DEVLINK_TRAP(IGMP_V2_LEAVE, CONTROL),
9720 DEVLINK_TRAP(MLD_QUERY, CONTROL),
9721 DEVLINK_TRAP(MLD_V1_REPORT, CONTROL),
9722 DEVLINK_TRAP(MLD_V2_REPORT, CONTROL),
9723 DEVLINK_TRAP(MLD_V1_DONE, CONTROL),
d77cfd16
IS		 9724 DEVLINK_TRAP(IPV4_DHCP, CONTROL),
9725 DEVLINK_TRAP(IPV6_DHCP, CONTROL),
9726 DEVLINK_TRAP(ARP_REQUEST, CONTROL),
9727 DEVLINK_TRAP(ARP_RESPONSE, CONTROL),
9728 DEVLINK_TRAP(ARP_OVERLAY, CONTROL),
9729 DEVLINK_TRAP(IPV6_NEIGH_SOLICIT, CONTROL),
9730 DEVLINK_TRAP(IPV6_NEIGH_ADVERT, CONTROL),
9731 DEVLINK_TRAP(IPV4_BFD, CONTROL),
9732 DEVLINK_TRAP(IPV6_BFD, CONTROL),
9733 DEVLINK_TRAP(IPV4_OSPF, CONTROL),
9734 DEVLINK_TRAP(IPV6_OSPF, CONTROL),
9735 DEVLINK_TRAP(IPV4_BGP, CONTROL),
9736 DEVLINK_TRAP(IPV6_BGP, CONTROL),
9737 DEVLINK_TRAP(IPV4_VRRP, CONTROL),
9738 DEVLINK_TRAP(IPV6_VRRP, CONTROL),
9739 DEVLINK_TRAP(IPV4_PIM, CONTROL),
9740 DEVLINK_TRAP(IPV6_PIM, CONTROL),
9741 DEVLINK_TRAP(UC_LB, CONTROL),
9742 DEVLINK_TRAP(LOCAL_ROUTE, CONTROL),
9743 DEVLINK_TRAP(EXTERNAL_ROUTE, CONTROL),
9744 DEVLINK_TRAP(IPV6_UC_DIP_LINK_LOCAL_SCOPE, CONTROL),
9745 DEVLINK_TRAP(IPV6_DIP_ALL_NODES, CONTROL),
9746 DEVLINK_TRAP(IPV6_DIP_ALL_ROUTERS, CONTROL),
9747 DEVLINK_TRAP(IPV6_ROUTER_SOLICIT, CONTROL),
9748 DEVLINK_TRAP(IPV6_ROUTER_ADVERT, CONTROL),
9749 DEVLINK_TRAP(IPV6_REDIRECT, CONTROL),
9750 DEVLINK_TRAP(IPV4_ROUTER_ALERT, CONTROL),
9751 DEVLINK_TRAP(IPV6_ROUTER_ALERT, CONTROL),
9752 DEVLINK_TRAP(PTP_EVENT, CONTROL),
9753 DEVLINK_TRAP(PTP_GENERAL, CONTROL),
5eb18a2b
IS		 9754 DEVLINK_TRAP(FLOW_ACTION_SAMPLE, CONTROL),
9755 DEVLINK_TRAP(FLOW_ACTION_TRAP, CONTROL),
08e335f6 9756 DEVLINK_TRAP(EARLY_DROP, DROP),
10c24eb2
IC		 9757 DEVLINK_TRAP(VXLAN_PARSING, DROP),
9758 DEVLINK_TRAP(LLC_SNAP_PARSING, DROP),
9759 DEVLINK_TRAP(VLAN_PARSING, DROP),
9760 DEVLINK_TRAP(PPPOE_PPP_PARSING, DROP),
9761 DEVLINK_TRAP(MPLS_PARSING, DROP),
9762 DEVLINK_TRAP(ARP_PARSING, DROP),
9763 DEVLINK_TRAP(IP_1_PARSING, DROP),
9764 DEVLINK_TRAP(IP_N_PARSING, DROP),
9765 DEVLINK_TRAP(GRE_PARSING, DROP),
9766 DEVLINK_TRAP(UDP_PARSING, DROP),
9767 DEVLINK_TRAP(TCP_PARSING, DROP),
9768 DEVLINK_TRAP(IPSEC_PARSING, DROP),
9769 DEVLINK_TRAP(SCTP_PARSING, DROP),
9770 DEVLINK_TRAP(DCCP_PARSING, DROP),
9771 DEVLINK_TRAP(GTP_PARSING, DROP),
9772 DEVLINK_TRAP(ESP_PARSING, DROP),
f0a5013e 9773 DEVLINK_TRAP(BLACKHOLE_NEXTHOP, DROP),
e78ab164 9774 DEVLINK_TRAP(DMAC_FILTER, DROP),
0f420b6c
IS		 9775};
9776
9777#define DEVLINK_TRAP_GROUP(_id) \
9778 { \
9779 .id = DEVLINK_TRAP_GROUP_GENERIC_ID_##_id, \
9780 .name = DEVLINK_TRAP_GROUP_GENERIC_NAME_##_id, \
9781 }
9782
9783static const struct devlink_trap_group devlink_trap_group_generic[] = {
391203ab
IS		 9784 DEVLINK_TRAP_GROUP(L2_DROPS),
9785 DEVLINK_TRAP_GROUP(L3_DROPS),
678eb199 9786 DEVLINK_TRAP_GROUP(L3_EXCEPTIONS),
391203ab 9787 DEVLINK_TRAP_GROUP(BUFFER_DROPS),
13c056ec 9788 DEVLINK_TRAP_GROUP(TUNNEL_DROPS),
ecd942a0 9789 DEVLINK_TRAP_GROUP(ACL_DROPS),
515eac67
IS		 9790 DEVLINK_TRAP_GROUP(STP),
9791 DEVLINK_TRAP_GROUP(LACP),
9792 DEVLINK_TRAP_GROUP(LLDP),
9793 DEVLINK_TRAP_GROUP(MC_SNOOPING),
d77cfd16
IS		 9794 DEVLINK_TRAP_GROUP(DHCP),
9795 DEVLINK_TRAP_GROUP(NEIGH_DISCOVERY),
9796 DEVLINK_TRAP_GROUP(BFD),
9797 DEVLINK_TRAP_GROUP(OSPF),
9798 DEVLINK_TRAP_GROUP(BGP),
9799 DEVLINK_TRAP_GROUP(VRRP),
9800 DEVLINK_TRAP_GROUP(PIM),
9801 DEVLINK_TRAP_GROUP(UC_LB),
9802 DEVLINK_TRAP_GROUP(LOCAL_DELIVERY),
ec4f5b36 9803 DEVLINK_TRAP_GROUP(EXTERNAL_DELIVERY),
d77cfd16
IS		 9804 DEVLINK_TRAP_GROUP(IPV6),
9805 DEVLINK_TRAP_GROUP(PTP_EVENT),
9806 DEVLINK_TRAP_GROUP(PTP_GENERAL),
5eb18a2b
IS		 9807 DEVLINK_TRAP_GROUP(ACL_SAMPLE),
9808 DEVLINK_TRAP_GROUP(ACL_TRAP),
10c24eb2 9809 DEVLINK_TRAP_GROUP(PARSER_ERROR_DROPS),
0f420b6c
IS		 9810};
9811
9812static int devlink_trap_generic_verify(const struct devlink_trap *trap)
9813{
9814 if (trap->id > DEVLINK_TRAP_GENERIC_ID_MAX)
9815 return -EINVAL;
9816
9817 if (strcmp(trap->name, devlink_trap_generic[trap->id].name))
9818 return -EINVAL;
9819
9820 if (trap->type != devlink_trap_generic[trap->id].type)
9821 return -EINVAL;
9822
9823 return 0;
9824}
9825
9826static int devlink_trap_driver_verify(const struct devlink_trap *trap)
9827{
9828 int i;
9829
9830 if (trap->id <= DEVLINK_TRAP_GENERIC_ID_MAX)
9831 return -EINVAL;
9832
9833 for (i = 0; i < ARRAY_SIZE(devlink_trap_generic); i++) {
9834 if (!strcmp(trap->name, devlink_trap_generic[i].name))
9835 return -EEXIST;
9836 }
9837
9838 return 0;
9839}
9840
9841static int devlink_trap_verify(const struct devlink_trap *trap)
9842{
107f1678 9843 if (!trap || !trap->name)
0f420b6c
IS		 9844 return -EINVAL;
9845
9846 if (trap->generic)
9847 return devlink_trap_generic_verify(trap);
9848 else
9849 return devlink_trap_driver_verify(trap);
9850}
9851
9852static int
9853devlink_trap_group_generic_verify(const struct devlink_trap_group *group)
9854{
9855 if (group->id > DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
9856 return -EINVAL;
9857
9858 if (strcmp(group->name, devlink_trap_group_generic[group->id].name))
9859 return -EINVAL;
9860
9861 return 0;
9862}
9863
9864static int
9865devlink_trap_group_driver_verify(const struct devlink_trap_group *group)
9866{
9867 int i;
9868
9869 if (group->id <= DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
9870 return -EINVAL;
9871
9872 for (i = 0; i < ARRAY_SIZE(devlink_trap_group_generic); i++) {
9873 if (!strcmp(group->name, devlink_trap_group_generic[i].name))
9874 return -EEXIST;
9875 }
9876
9877 return 0;
9878}
9879
9880static int devlink_trap_group_verify(const struct devlink_trap_group *group)
9881{
9882 if (group->generic)
9883 return devlink_trap_group_generic_verify(group);
9884 else
9885 return devlink_trap_group_driver_verify(group);
9886}
9887
9888static void
9889devlink_trap_group_notify(struct devlink *devlink,
9890 const struct devlink_trap_group_item *group_item,
9891 enum devlink_command cmd)
9892{
9893 struct sk_buff *msg;
9894 int err;
9895
9896 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_GROUP_NEW &&
9897 cmd != DEVLINK_CMD_TRAP_GROUP_DEL);
9898
9899 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9900 if (!msg)
9901 return;
9902
9903 err = devlink_nl_trap_group_fill(msg, devlink, group_item, cmd, 0, 0,
9904 0);
9905 if (err) {
9906 nlmsg_free(msg);
9907 return;
9908 }
9909
9910 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
9911 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
9912}
9913
0f420b6c
IS		 9914static int
9915devlink_trap_item_group_link(struct devlink *devlink,
9916 struct devlink_trap_item *trap_item)
9917{
107f1678 9918 u16 group_id = trap_item->trap->init_group_id;
0f420b6c
IS		 9919 struct devlink_trap_group_item *group_item;
9920
107f1678 9921 group_item = devlink_trap_group_item_lookup_by_id(devlink, group_id);
a09b37fc
IS		 9922 if (WARN_ON_ONCE(!group_item))
9923 return -EINVAL;
0f420b6c
IS		 9924
9925 trap_item->group_item = group_item;
9926
9927 return 0;
9928}
9929
0f420b6c
IS		 9930static void devlink_trap_notify(struct devlink *devlink,
9931 const struct devlink_trap_item *trap_item,
9932 enum devlink_command cmd)
9933{
9934 struct sk_buff *msg;
9935 int err;
9936
9937 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_NEW &&
9938 cmd != DEVLINK_CMD_TRAP_DEL);
9939
9940 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9941 if (!msg)
9942 return;
9943
9944 err = devlink_nl_trap_fill(msg, devlink, trap_item, cmd, 0, 0, 0);
9945 if (err) {
9946 nlmsg_free(msg);
9947 return;
9948 }
9949
9950 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
9951 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
9952}
9953
9954static int
9955devlink_trap_register(struct devlink *devlink,
9956 const struct devlink_trap *trap, void *priv)
9957{
9958 struct devlink_trap_item *trap_item;
9959 int err;
9960
9961 if (devlink_trap_item_lookup(devlink, trap->name))
9962 return -EEXIST;
9963
9964 trap_item = kzalloc(sizeof(*trap_item), GFP_KERNEL);
9965 if (!trap_item)
9966 return -ENOMEM;
9967
9968 trap_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
9969 if (!trap_item->stats) {
9970 err = -ENOMEM;
9971 goto err_stats_alloc;
9972 }
9973
9974 trap_item->trap = trap;
9975 trap_item->action = trap->init_action;
9976 trap_item->priv = priv;
9977
9978 err = devlink_trap_item_group_link(devlink, trap_item);
9979 if (err)
9980 goto err_group_link;
9981
9982 err = devlink->ops->trap_init(devlink, trap, trap_item);
9983 if (err)
9984 goto err_trap_init;
9985
9986 list_add_tail(&trap_item->list, &devlink->trap_list);
9987 devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_NEW);
9988
9989 return 0;
9990
9991err_trap_init:
0f420b6c
IS		 9992err_group_link:
9993 free_percpu(trap_item->stats);
9994err_stats_alloc:
9995 kfree(trap_item);
9996 return err;
9997}
9998
9999static void devlink_trap_unregister(struct devlink *devlink,
10000 const struct devlink_trap *trap)
10001{
10002 struct devlink_trap_item *trap_item;
10003
10004 trap_item = devlink_trap_item_lookup(devlink, trap->name);
10005 if (WARN_ON_ONCE(!trap_item))
10006 return;
10007
10008 devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_DEL);
10009 list_del(&trap_item->list);
10010 if (devlink->ops->trap_fini)
10011 devlink->ops->trap_fini(devlink, trap, trap_item);
0f420b6c
IS		 10012 free_percpu(trap_item->stats);
10013 kfree(trap_item);
10014}
10015
10016static void devlink_trap_disable(struct devlink *devlink,
10017 const struct devlink_trap *trap)
10018{
10019 struct devlink_trap_item *trap_item;
10020
10021 trap_item = devlink_trap_item_lookup(devlink, trap->name);
10022 if (WARN_ON_ONCE(!trap_item))
10023 return;
10024
c88e11e0
IS		 10025 devlink->ops->trap_action_set(devlink, trap, DEVLINK_TRAP_ACTION_DROP,
10026 NULL);
0f420b6c
IS		 10027 trap_item->action = DEVLINK_TRAP_ACTION_DROP;
10028}
10029
10030/**
10031 * devlink_traps_register - Register packet traps with devlink.
10032 * @devlink: devlink.
10033 * @traps: Packet traps.
10034 * @traps_count: Count of provided packet traps.
10035 * @priv: Driver private information.
10036 *
10037 * Return: Non-zero value on failure.
10038 */
10039int devlink_traps_register(struct devlink *devlink,
10040 const struct devlink_trap *traps,
10041 size_t traps_count, void *priv)
10042{
10043 int i, err;
10044
10045 if (!devlink->ops->trap_init || !devlink->ops->trap_action_set)
10046 return -EINVAL;
10047
10048 mutex_lock(&devlink->lock);
10049 for (i = 0; i < traps_count; i++) {
10050 const struct devlink_trap *trap = &traps[i];
10051
10052 err = devlink_trap_verify(trap);
10053 if (err)
10054 goto err_trap_verify;
10055
10056 err = devlink_trap_register(devlink, trap, priv);
10057 if (err)
10058 goto err_trap_register;
10059 }
10060 mutex_unlock(&devlink->lock);
10061
10062 return 0;
10063
10064err_trap_register:
10065err_trap_verify:
10066 for (i--; i >= 0; i--)
10067 devlink_trap_unregister(devlink, &traps[i]);
10068 mutex_unlock(&devlink->lock);
10069 return err;
10070}
10071EXPORT_SYMBOL_GPL(devlink_traps_register);
10072
10073/**
10074 * devlink_traps_unregister - Unregister packet traps from devlink.
10075 * @devlink: devlink.
10076 * @traps: Packet traps.
10077 * @traps_count: Count of provided packet traps.
10078 */
10079void devlink_traps_unregister(struct devlink *devlink,
10080 const struct devlink_trap *traps,
10081 size_t traps_count)
10082{
10083 int i;
10084
10085 mutex_lock(&devlink->lock);
10086 /* Make sure we do not have any packets in-flight while unregistering
10087 * traps by disabling all of them and waiting for a grace period.
10088 */
10089 for (i = traps_count - 1; i >= 0; i--)
10090 devlink_trap_disable(devlink, &traps[i]);
10091 synchronize_rcu();
10092 for (i = traps_count - 1; i >= 0; i--)
10093 devlink_trap_unregister(devlink, &traps[i]);
10094 mutex_unlock(&devlink->lock);
10095}
10096EXPORT_SYMBOL_GPL(devlink_traps_unregister);
10097
10098static void
10099devlink_trap_stats_update(struct devlink_stats __percpu *trap_stats,
10100 size_t skb_len)
10101{
10102 struct devlink_stats *stats;
10103
10104 stats = this_cpu_ptr(trap_stats);
10105 u64_stats_update_begin(&stats->syncp);
10106 stats->rx_bytes += skb_len;
10107 stats->rx_packets++;
10108 u64_stats_update_end(&stats->syncp);
10109}
10110
5b88823b
IS		 10111static void
10112devlink_trap_report_metadata_set(struct devlink_trap_metadata *metadata,
10113 const struct devlink_trap_item *trap_item,
10114 struct devlink_port *in_devlink_port,
10115 const struct flow_action_cookie *fa_cookie)
10116{
10117 metadata->trap_name = trap_item->trap->name;
10118 metadata->trap_group_name = trap_item->group_item->group->name;
10119 metadata->fa_cookie = fa_cookie;
93e15596 10120 metadata->trap_type = trap_item->trap->type;
5b88823b
IS		 10121
10122 spin_lock(&in_devlink_port->type_lock);
10123 if (in_devlink_port->type == DEVLINK_PORT_TYPE_ETH)
10124 metadata->input_dev = in_devlink_port->type_dev;
10125 spin_unlock(&in_devlink_port->type_lock);
10126}
10127
0f420b6c
IS		 10128/**
10129 * devlink_trap_report - Report trapped packet to drop monitor.
10130 * @devlink: devlink.
10131 * @skb: Trapped packet.
10132 * @trap_ctx: Trap context.
10133 * @in_devlink_port: Input devlink port.
5a2e106c 10134 * @fa_cookie: Flow action cookie. Could be NULL.
0f420b6c
IS		 10135 */
10136void devlink_trap_report(struct devlink *devlink, struct sk_buff *skb,
5a2e106c
JP		 10137 void *trap_ctx, struct devlink_port *in_devlink_port,
10138 const struct flow_action_cookie *fa_cookie)
10139
0f420b6c
IS		 10140{
10141 struct devlink_trap_item *trap_item = trap_ctx;
0f420b6c
IS		 10142
10143 devlink_trap_stats_update(trap_item->stats, skb->len);
10144 devlink_trap_stats_update(trap_item->group_item->stats, skb->len);
10145
5b88823b
IS		 10146 if (trace_devlink_trap_report_enabled()) {
10147 struct devlink_trap_metadata metadata = {};
10148
10149 devlink_trap_report_metadata_set(&metadata, trap_item,
10150 in_devlink_port, fa_cookie);
10151 trace_devlink_trap_report(devlink, skb, &metadata);
10152 }
0f420b6c
IS		 10153}
10154EXPORT_SYMBOL_GPL(devlink_trap_report);
10155
10156/**
10157 * devlink_trap_ctx_priv - Trap context to driver private information.
10158 * @trap_ctx: Trap context.
10159 *
10160 * Return: Driver private information passed during registration.
10161 */
10162void *devlink_trap_ctx_priv(void *trap_ctx)
10163{
10164 struct devlink_trap_item *trap_item = trap_ctx;
10165
10166 return trap_item->priv;
10167}
10168EXPORT_SYMBOL_GPL(devlink_trap_ctx_priv);
10169
f9f54392
IS		 10170static int
10171devlink_trap_group_item_policer_link(struct devlink *devlink,
10172 struct devlink_trap_group_item *group_item)
10173{
10174 u32 policer_id = group_item->group->init_policer_id;
10175 struct devlink_trap_policer_item *policer_item;
10176
10177 if (policer_id == 0)
10178 return 0;
10179
10180 policer_item = devlink_trap_policer_item_lookup(devlink, policer_id);
10181 if (WARN_ON_ONCE(!policer_item))
10182 return -EINVAL;
10183
10184 group_item->policer_item = policer_item;
10185
10186 return 0;
10187}
10188
95ad9555
IS		 10189static int
10190devlink_trap_group_register(struct devlink *devlink,
10191 const struct devlink_trap_group *group)
10192{
10193 struct devlink_trap_group_item *group_item;
10194 int err;
10195
10196 if (devlink_trap_group_item_lookup(devlink, group->name))
10197 return -EEXIST;
10198
10199 group_item = kzalloc(sizeof(*group_item), GFP_KERNEL);
10200 if (!group_item)
10201 return -ENOMEM;
10202
10203 group_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
10204 if (!group_item->stats) {
10205 err = -ENOMEM;
10206 goto err_stats_alloc;
10207 }
10208
10209 group_item->group = group;
95ad9555 10210
f9f54392
IS		 10211 err = devlink_trap_group_item_policer_link(devlink, group_item);
10212 if (err)
10213 goto err_policer_link;
10214
95ad9555
IS		 10215 if (devlink->ops->trap_group_init) {
10216 err = devlink->ops->trap_group_init(devlink, group);
10217 if (err)
10218 goto err_group_init;
10219 }
10220
10221 list_add_tail(&group_item->list, &devlink->trap_group_list);
10222 devlink_trap_group_notify(devlink, group_item,
10223 DEVLINK_CMD_TRAP_GROUP_NEW);
10224
10225 return 0;
10226
10227err_group_init:
f9f54392 10228err_policer_link:
95ad9555
IS		 10229 free_percpu(group_item->stats);
10230err_stats_alloc:
10231 kfree(group_item);
10232 return err;
10233}
10234
10235static void
10236devlink_trap_group_unregister(struct devlink *devlink,
10237 const struct devlink_trap_group *group)
10238{
10239 struct devlink_trap_group_item *group_item;
10240
10241 group_item = devlink_trap_group_item_lookup(devlink, group->name);
10242 if (WARN_ON_ONCE(!group_item))
10243 return;
10244
10245 devlink_trap_group_notify(devlink, group_item,
10246 DEVLINK_CMD_TRAP_GROUP_DEL);
10247 list_del(&group_item->list);
10248 free_percpu(group_item->stats);
10249 kfree(group_item);
10250}
10251
10252/**
10253 * devlink_trap_groups_register - Register packet trap groups with devlink.
10254 * @devlink: devlink.
10255 * @groups: Packet trap groups.
10256 * @groups_count: Count of provided packet trap groups.
10257 *
10258 * Return: Non-zero value on failure.
10259 */
10260int devlink_trap_groups_register(struct devlink *devlink,
10261 const struct devlink_trap_group *groups,
10262 size_t groups_count)
10263{
10264 int i, err;
10265
10266 mutex_lock(&devlink->lock);
10267 for (i = 0; i < groups_count; i++) {
10268 const struct devlink_trap_group *group = &groups[i];
10269
10270 err = devlink_trap_group_verify(group);
10271 if (err)
10272 goto err_trap_group_verify;
10273
10274 err = devlink_trap_group_register(devlink, group);
10275 if (err)
10276 goto err_trap_group_register;
10277 }
10278 mutex_unlock(&devlink->lock);
10279
10280 return 0;
10281
10282err_trap_group_register:
10283err_trap_group_verify:
10284 for (i--; i >= 0; i--)
10285 devlink_trap_group_unregister(devlink, &groups[i]);
10286 mutex_unlock(&devlink->lock);
10287 return err;
10288}
10289EXPORT_SYMBOL_GPL(devlink_trap_groups_register);
10290
10291/**
10292 * devlink_trap_groups_unregister - Unregister packet trap groups from devlink.
10293 * @devlink: devlink.
10294 * @groups: Packet trap groups.
10295 * @groups_count: Count of provided packet trap groups.
10296 */
10297void devlink_trap_groups_unregister(struct devlink *devlink,
10298 const struct devlink_trap_group *groups,
10299 size_t groups_count)
10300{
10301 int i;
10302
10303 mutex_lock(&devlink->lock);
10304 for (i = groups_count - 1; i >= 0; i--)
10305 devlink_trap_group_unregister(devlink, &groups[i]);
10306 mutex_unlock(&devlink->lock);
10307}
10308EXPORT_SYMBOL_GPL(devlink_trap_groups_unregister);
10309
1e8c6619
IS		 10310static void
10311devlink_trap_policer_notify(struct devlink *devlink,
10312 const struct devlink_trap_policer_item *policer_item,
10313 enum devlink_command cmd)
10314{
10315 struct sk_buff *msg;
10316 int err;
10317
10318 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_POLICER_NEW &&
10319 cmd != DEVLINK_CMD_TRAP_POLICER_DEL);
10320
10321 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10322 if (!msg)
10323 return;
10324
10325 err = devlink_nl_trap_policer_fill(msg, devlink, policer_item, cmd, 0,
10326 0, 0);
10327 if (err) {
10328 nlmsg_free(msg);
10329 return;
10330 }
10331
10332 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
10333 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
10334}
10335
10336static int
10337devlink_trap_policer_register(struct devlink *devlink,
10338 const struct devlink_trap_policer *policer)
10339{
10340 struct devlink_trap_policer_item *policer_item;
10341 int err;
10342
10343 if (devlink_trap_policer_item_lookup(devlink, policer->id))
10344 return -EEXIST;
10345
10346 policer_item = kzalloc(sizeof(*policer_item), GFP_KERNEL);
10347 if (!policer_item)
10348 return -ENOMEM;
10349
10350 policer_item->policer = policer;
10351 policer_item->rate = policer->init_rate;
10352 policer_item->burst = policer->init_burst;
10353
10354 if (devlink->ops->trap_policer_init) {
10355 err = devlink->ops->trap_policer_init(devlink, policer);
10356 if (err)
10357 goto err_policer_init;
10358 }
10359
10360 list_add_tail(&policer_item->list, &devlink->trap_policer_list);
10361 devlink_trap_policer_notify(devlink, policer_item,
10362 DEVLINK_CMD_TRAP_POLICER_NEW);
10363
10364 return 0;
10365
10366err_policer_init:
10367 kfree(policer_item);
10368 return err;
10369}
10370
10371static void
10372devlink_trap_policer_unregister(struct devlink *devlink,
10373 const struct devlink_trap_policer *policer)
10374{
10375 struct devlink_trap_policer_item *policer_item;
10376
10377 policer_item = devlink_trap_policer_item_lookup(devlink, policer->id);
10378 if (WARN_ON_ONCE(!policer_item))
10379 return;
10380
10381 devlink_trap_policer_notify(devlink, policer_item,
10382 DEVLINK_CMD_TRAP_POLICER_DEL);
10383 list_del(&policer_item->list);
10384 if (devlink->ops->trap_policer_fini)
10385 devlink->ops->trap_policer_fini(devlink, policer);
10386 kfree(policer_item);
10387}
10388
10389/**
10390 * devlink_trap_policers_register - Register packet trap policers with devlink.
10391 * @devlink: devlink.
10392 * @policers: Packet trap policers.
10393 * @policers_count: Count of provided packet trap policers.
10394 *
10395 * Return: Non-zero value on failure.
10396 */
10397int
10398devlink_trap_policers_register(struct devlink *devlink,
10399 const struct devlink_trap_policer *policers,
10400 size_t policers_count)
10401{
10402 int i, err;
10403
10404 mutex_lock(&devlink->lock);
10405 for (i = 0; i < policers_count; i++) {
10406 const struct devlink_trap_policer *policer = &policers[i];
10407
10408 if (WARN_ON(policer->id == 0 ||
10409 policer->max_rate < policer->min_rate ||
10410 policer->max_burst < policer->min_burst)) {
10411 err = -EINVAL;
10412 goto err_trap_policer_verify;
10413 }
10414
10415 err = devlink_trap_policer_register(devlink, policer);
10416 if (err)
10417 goto err_trap_policer_register;
10418 }
10419 mutex_unlock(&devlink->lock);
10420
10421 return 0;
10422
10423err_trap_policer_register:
10424err_trap_policer_verify:
10425 for (i--; i >= 0; i--)
10426 devlink_trap_policer_unregister(devlink, &policers[i]);
10427 mutex_unlock(&devlink->lock);
10428 return err;
10429}
10430EXPORT_SYMBOL_GPL(devlink_trap_policers_register);
10431
10432/**
10433 * devlink_trap_policers_unregister - Unregister packet trap policers from devlink.
10434 * @devlink: devlink.
10435 * @policers: Packet trap policers.
10436 * @policers_count: Count of provided packet trap policers.
10437 */
10438void
10439devlink_trap_policers_unregister(struct devlink *devlink,
10440 const struct devlink_trap_policer *policers,
10441 size_t policers_count)
10442{
10443 int i;
10444
10445 mutex_lock(&devlink->lock);
10446 for (i = policers_count - 1; i >= 0; i--)
10447 devlink_trap_policer_unregister(devlink, &policers[i]);
10448 mutex_unlock(&devlink->lock);
10449}
10450EXPORT_SYMBOL_GPL(devlink_trap_policers_unregister);
10451
ddb6e99e
JK		 10452static void __devlink_compat_running_version(struct devlink *devlink,
10453 char *buf, size_t len)
10454{
10455 const struct nlattr *nlattr;
10456 struct devlink_info_req req;
10457 struct sk_buff *msg;
10458 int rem, err;
10459
ddb6e99e
JK		 10460 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10461 if (!msg)
10462 return;
10463
10464 req.msg = msg;
10465 err = devlink->ops->info_get(devlink, &req, NULL);
10466 if (err)
10467 goto free_msg;
10468
10469 nla_for_each_attr(nlattr, (void *)msg->data, msg->len, rem) {
10470 const struct nlattr *kv;
10471 int rem_kv;
10472
10473 if (nla_type(nlattr) != DEVLINK_ATTR_INFO_VERSION_RUNNING)
10474 continue;
10475
10476 nla_for_each_nested(kv, nlattr, rem_kv) {
10477 if (nla_type(kv) != DEVLINK_ATTR_INFO_VERSION_VALUE)
10478 continue;
10479
10480 strlcat(buf, nla_data(kv), len);
10481 strlcat(buf, " ", len);
10482 }
10483 }
10484free_msg:
10485 nlmsg_free(msg);
10486}
10487
10488void devlink_compat_running_version(struct net_device *dev,
10489 char *buf, size_t len)
10490{
ddb6e99e
JK		 10491 struct devlink *devlink;
10492
1b45ff6c
JK		 10493 dev_hold(dev);
10494 rtnl_unlock();
10495
b473b0d2 10496 devlink = netdev_to_devlink(dev);
be6fe1d8 10497 if (!devlink || !devlink->ops->info_get)
e0dcd386 10498 goto out;
b473b0d2
JK		 10499
10500 mutex_lock(&devlink->lock);
10501 __devlink_compat_running_version(devlink, buf, len);
10502 mutex_unlock(&devlink->lock);
1b45ff6c 10503
e0dcd386 10504out:
1b45ff6c
JK		 10505 rtnl_lock();
10506 dev_put(dev);
ddb6e99e
JK		 10507}
10508
4eceba17
JK		 10509int devlink_compat_flash_update(struct net_device *dev, const char *file_name)
10510{
bc75c054 10511 struct devlink_flash_update_params params = {};
4eceba17 10512 struct devlink *devlink;
e0dcd386 10513 int ret;
4eceba17 10514
1b45ff6c
JK		 10515 dev_hold(dev);
10516 rtnl_unlock();
10517
b473b0d2 10518 devlink = netdev_to_devlink(dev);
e0dcd386
JP		 10519 if (!devlink || !devlink->ops->flash_update) {
10520 ret = -EOPNOTSUPP;
10521 goto out;
10522 }
4eceba17 10523
b44cfd4f
JK		 10524 ret = request_firmware(&params.fw, file_name, devlink->dev);
10525 if (ret)
10526 goto out;
bc75c054 10527
b473b0d2 10528 mutex_lock(&devlink->lock);
52cc5f3a 10529 devlink_flash_update_begin_notify(devlink);
bc75c054 10530 ret = devlink->ops->flash_update(devlink, &params, NULL);
52cc5f3a 10531 devlink_flash_update_end_notify(devlink);
b473b0d2 10532 mutex_unlock(&devlink->lock);
1b45ff6c 10533
b44cfd4f
JK		 10534 release_firmware(params.fw);
10535
e0dcd386 10536out:
1b45ff6c
JK		 10537 rtnl_lock();
10538 dev_put(dev);
10539
b473b0d2 10540 return ret;
4eceba17
JK		 10541}
10542
af3836df
JP		 10543int devlink_compat_phys_port_name_get(struct net_device *dev,
10544 char *name, size_t len)
10545{
10546 struct devlink_port *devlink_port;
10547
10548 /* RTNL mutex is held here which ensures that devlink_port
10549 * instance cannot disappear in the middle. No need to take
10550 * any devlink lock as only permanent values are accessed.
10551 */
10552 ASSERT_RTNL();
10553
10554 devlink_port = netdev_to_devlink_port(dev);
10555 if (!devlink_port)
10556 return -EOPNOTSUPP;
10557
10558 return __devlink_port_phys_port_name_get(devlink_port, name, len);
10559}
10560
7e1146e8
JP		 10561int devlink_compat_switch_id_get(struct net_device *dev,
10562 struct netdev_phys_item_id *ppid)
10563{
10564 struct devlink_port *devlink_port;
10565
043b8413
VB		 10566 /* Caller must hold RTNL mutex or reference to dev, which ensures that
10567 * devlink_port instance cannot disappear in the middle. No need to take
7e1146e8
JP		 10568 * any devlink lock as only permanent values are accessed.
10569 */
7e1146e8 10570 devlink_port = netdev_to_devlink_port(dev);
46737a19 10571 if (!devlink_port || !devlink_port->switch_port)
7e1146e8
JP		 10572 return -EOPNOTSUPP;
10573
10574 memcpy(ppid, &devlink_port->attrs.switch_id, sizeof(*ppid));
10575
10576 return 0;
10577}
10578
070c63f2
JP		 10579static void __net_exit devlink_pernet_pre_exit(struct net *net)
10580{
10581 struct devlink *devlink;
ccdf0721 10582 u32 actions_performed;
070c63f2
JP		 10583 int err;
10584
10585 /* In case network namespace is getting destroyed, reload
10586 * all devlink instances from this namespace into init_net.
10587 */
10588 mutex_lock(&devlink_mutex);
10589 list_for_each_entry(devlink, &devlink_list, list) {
10590 if (net_eq(devlink_net(devlink), net)) {
69d56e0e 10591 if (WARN_ON(!devlink_reload_supported(devlink->ops)))
070c63f2 10592 continue;
ccdf0721
MS		 10593 err = devlink_reload(devlink, &init_net,
10594 DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
dc64cc7c 10595 DEVLINK_RELOAD_LIMIT_UNSPEC,
ccdf0721 10596 &actions_performed, NULL);
a0c76345 10597 if (err && err != -EOPNOTSUPP)
070c63f2
JP		 10598 pr_warn("Failed to reload devlink instance into init_net\n");
10599 }
10600 }
10601 mutex_unlock(&devlink_mutex);
10602}
10603
10604static struct pernet_operations devlink_pernet_ops __net_initdata = {
10605 .pre_exit = devlink_pernet_pre_exit,
10606};
10607
f4b6bcc7 10608static int __init devlink_init(void)
bfcd3a46 10609{
070c63f2
JP		 10610 int err;
10611
10612 err = genl_register_family(&devlink_nl_family);
10613 if (err)
10614 goto out;
10615 err = register_pernet_subsys(&devlink_pernet_ops);
10616
10617out:
10618 WARN_ON(err);
10619 return err;
bfcd3a46
JP		 10620}
10621
f4b6bcc7 10622subsys_initcall(devlink_init);
Linux 6.x block layer and io_uring tree(s)