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Merge branch 'mediatek-next'
[linux-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
b6459415 10#include <linux/etherdevice.h>
bfcd3a46
JP		 11#include <linux/kernel.h>
12#include <linux/module.h>
13#include <linux/types.h>
14#include <linux/slab.h>
15#include <linux/gfp.h>
16#include <linux/device.h>
17#include <linux/list.h>
18#include <linux/netdevice.h>
b8f97554 19#include <linux/spinlock.h>
b587bdaf 20#include <linux/refcount.h>
136bf27f 21#include <linux/workqueue.h>
0f420b6c
IS		 22#include <linux/u64_stats_sync.h>
23#include <linux/timekeeping.h>
bfcd3a46
JP		 24#include <rdma/ib_verbs.h>
25#include <net/netlink.h>
26#include <net/genetlink.h>
27#include <net/rtnetlink.h>
28#include <net/net_namespace.h>
29#include <net/sock.h>
30#include <net/devlink.h>
e5224f0f
JP		 31#define CREATE_TRACE_POINTS
32#include <trace/events/devlink.h>
33
21314638
LR		 34#define DEVLINK_RELOAD_STATS_ARRAY_SIZE \
35 (__DEVLINK_RELOAD_LIMIT_MAX * __DEVLINK_RELOAD_ACTION_MAX)
36
37struct devlink_dev_stats {
38 u32 reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE];
39 u32 remote_reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE];
40};
41
42struct devlink {
43 u32 index;
44 struct list_head port_list;
45 struct list_head rate_list;
46 struct list_head sb_list;
47 struct list_head dpipe_table_list;
48 struct list_head resource_list;
49 struct list_head param_list;
50 struct list_head region_list;
51 struct list_head reporter_list;
52 struct mutex reporters_lock; /* protects reporter_list */
53 struct devlink_dpipe_headers *dpipe_headers;
54 struct list_head trap_list;
55 struct list_head trap_group_list;
56 struct list_head trap_policer_list;
57 const struct devlink_ops *ops;
bd032e35 58 u64 features;
21314638
LR		 59 struct xarray snapshot_ids;
60 struct devlink_dev_stats stats;
61 struct device *dev;
62 possible_net_t _net;
63 /* Serializes access to devlink instance specific objects such as
64 * port, sb, dpipe, resource, params, region, traps and more.
65 */
66 struct mutex lock;
82465bec 67 u8 reload_failed:1;
21314638
LR		 68 refcount_t refcount;
69 struct completion comp;
96d0c9be 70 char priv[] __aligned(NETDEV_ALIGN);
21314638
LR		 71};
72
4c897cfc
LR		 73/**
74 * struct devlink_resource - devlink resource
75 * @name: name of the resource
76 * @id: id, per devlink instance
77 * @size: size of the resource
78 * @size_new: updated size of the resource, reload is needed
79 * @size_valid: valid in case the total size of the resource is valid
80 * including its children
81 * @parent: parent resource
82 * @size_params: size parameters
83 * @list: parent list
84 * @resource_list: list of child resources
85 * @occ_get: occupancy getter callback
86 * @occ_get_priv: occupancy getter callback priv
87 */
88struct devlink_resource {
89 const char *name;
90 u64 id;
91 u64 size;
92 u64 size_new;
93 bool size_valid;
94 struct devlink_resource *parent;
95 struct devlink_resource_size_params size_params;
96 struct list_head list;
97 struct list_head resource_list;
98 devlink_resource_occ_get_t *occ_get;
99 void *occ_get_priv;
100};
101
21314638
LR		 102void *devlink_priv(struct devlink *devlink)
103{
104 return &devlink->priv;
105}
106EXPORT_SYMBOL_GPL(devlink_priv);
107
108struct devlink *priv_to_devlink(void *priv)
109{
110 return container_of(priv, struct devlink, priv);
111}
112EXPORT_SYMBOL_GPL(priv_to_devlink);
113
114struct device *devlink_to_dev(const struct devlink *devlink)
115{
116 return devlink->dev;
117}
118EXPORT_SYMBOL_GPL(devlink_to_dev);
119
11770091
AS		 120static struct devlink_dpipe_field devlink_dpipe_fields_ethernet[] = {
121 {
12bdc5e1 122 .name = "destination mac",
11770091
AS		 123 .id = DEVLINK_DPIPE_FIELD_ETHERNET_DST_MAC,
124 .bitwidth = 48,
125 },
126};
127
128struct devlink_dpipe_header devlink_dpipe_header_ethernet = {
129 .name = "ethernet",
130 .id = DEVLINK_DPIPE_HEADER_ETHERNET,
131 .fields = devlink_dpipe_fields_ethernet,
132 .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ethernet),
133 .global = true,
134};
c52ef04d 135EXPORT_SYMBOL_GPL(devlink_dpipe_header_ethernet);
11770091 136
3fb886ec
AS		 137static struct devlink_dpipe_field devlink_dpipe_fields_ipv4[] = {
138 {
139 .name = "destination ip",
140 .id = DEVLINK_DPIPE_FIELD_IPV4_DST_IP,
141 .bitwidth = 32,
142 },
143};
144
145struct devlink_dpipe_header devlink_dpipe_header_ipv4 = {
146 .name = "ipv4",
147 .id = DEVLINK_DPIPE_HEADER_IPV4,
148 .fields = devlink_dpipe_fields_ipv4,
149 .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv4),
150 .global = true,
151};
c52ef04d 152EXPORT_SYMBOL_GPL(devlink_dpipe_header_ipv4);
3fb886ec 153
1797f5b3
AS		 154static struct devlink_dpipe_field devlink_dpipe_fields_ipv6[] = {
155 {
156 .name = "destination ip",
157 .id = DEVLINK_DPIPE_FIELD_IPV6_DST_IP,
158 .bitwidth = 128,
159 },
160};
161
162struct devlink_dpipe_header devlink_dpipe_header_ipv6 = {
163 .name = "ipv6",
164 .id = DEVLINK_DPIPE_HEADER_IPV6,
165 .fields = devlink_dpipe_fields_ipv6,
166 .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv6),
167 .global = true,
168};
c52ef04d 169EXPORT_SYMBOL_GPL(devlink_dpipe_header_ipv6);
1797f5b3 170
e5224f0f 171EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwmsg);
57186a5f 172EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwerr);
5b88823b 173EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_trap_report);
bfcd3a46 174
a1e8ae90
PP		 175static const struct nla_policy devlink_function_nl_policy[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1] = {
176 [DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR] = { .type = NLA_BINARY },
a556dded
PP		 177 [DEVLINK_PORT_FN_ATTR_STATE] =
178 NLA_POLICY_RANGE(NLA_U8, DEVLINK_PORT_FN_STATE_INACTIVE,
179 DEVLINK_PORT_FN_STATE_ACTIVE),
a1e8ae90
PP		 180};
181
11a861d7
LR		 182static DEFINE_XARRAY_FLAGS(devlinks, XA_FLAGS_ALLOC);
183#define DEVLINK_REGISTERED XA_MARK_1
bfcd3a46 184
b88f7b12
LR		 185/* devlink instances are open to the access from the user space after
186 * devlink_register() call. Such logical barrier allows us to have certain
187 * expectations related to locking.
188 *
189 * Before *_register() - we are in initialization stage and no parallel
190 * access possible to the devlink instance. All drivers perform that phase
191 * by implicitly holding device_lock.
192 *
193 * After *_register() - users and driver can access devlink instance at
194 * the same time.
195 */
196#define ASSERT_DEVLINK_REGISTERED(d) \
197 WARN_ON_ONCE(!xa_get_mark(&devlinks, (d)->index, DEVLINK_REGISTERED))
198#define ASSERT_DEVLINK_NOT_REGISTERED(d) \
199 WARN_ON_ONCE(xa_get_mark(&devlinks, (d)->index, DEVLINK_REGISTERED))
200
bfcd3a46
JP		 201/* devlink_mutex
202 *
203 * An overall lock guarding every operation coming from userspace.
204 * It also guards devlink devices list and it is taken when
205 * driver registers/unregisters it.
206 */
207static DEFINE_MUTEX(devlink_mutex);
208
471f894f 209struct net *devlink_net(const struct devlink *devlink)
bfcd3a46
JP		 210{
211 return read_pnet(&devlink->_net);
212}
471f894f 213EXPORT_SYMBOL_GPL(devlink_net);
bfcd3a46 214
46db1b77 215void devlink_put(struct devlink *devlink)
437ebfd9
LR		 216{
217 if (refcount_dec_and_test(&devlink->refcount))
218 complete(&devlink->comp);
219}
220
46db1b77 221struct devlink *__must_check devlink_try_get(struct devlink *devlink)
437ebfd9 222{
46db1b77
JK		 223 if (refcount_inc_not_zero(&devlink->refcount))
224 return devlink;
225 return NULL;
437ebfd9
LR		 226}
227
bfcd3a46
JP		 228static struct devlink *devlink_get_from_attrs(struct net *net,
229 struct nlattr **attrs)
230{
231 struct devlink *devlink;
11a861d7 232 unsigned long index;
437ebfd9 233 bool found = false;
bfcd3a46
JP		 234 char *busname;
235 char *devname;
236
237 if (!attrs[DEVLINK_ATTR_BUS_NAME] || !attrs[DEVLINK_ATTR_DEV_NAME])
238 return ERR_PTR(-EINVAL);
239
240 busname = nla_data(attrs[DEVLINK_ATTR_BUS_NAME]);
241 devname = nla_data(attrs[DEVLINK_ATTR_DEV_NAME]);
242
dac7c08f
PP		 243 lockdep_assert_held(&devlink_mutex);
244
11a861d7 245 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
bfcd3a46
JP		 246 if (strcmp(devlink->dev->bus->name, busname) == 0 &&
247 strcmp(dev_name(devlink->dev), devname) == 0 &&
437ebfd9
LR		 248 net_eq(devlink_net(devlink), net)) {
249 found = true;
250 break;
251 }
bfcd3a46
JP		 252 }
253
437ebfd9
LR		 254 if (!found || !devlink_try_get(devlink))
255 devlink = ERR_PTR(-ENODEV);
bfcd3a46 256
437ebfd9 257 return devlink;
bfcd3a46
JP		 258}
259
260static struct devlink_port *devlink_port_get_by_index(struct devlink *devlink,
c7282b50 261 unsigned int port_index)
bfcd3a46
JP		 262{
263 struct devlink_port *devlink_port;
264
265 list_for_each_entry(devlink_port, &devlink->port_list, list) {
266 if (devlink_port->index == port_index)
267 return devlink_port;
268 }
269 return NULL;
270}
271
c7282b50
PP		 272static bool devlink_port_index_exists(struct devlink *devlink,
273 unsigned int port_index)
bfcd3a46
JP		 274{
275 return devlink_port_get_by_index(devlink, port_index);
276}
277
278static struct devlink_port *devlink_port_get_from_attrs(struct devlink *devlink,
279 struct nlattr **attrs)
280{
281 if (attrs[DEVLINK_ATTR_PORT_INDEX]) {
282 u32 port_index = nla_get_u32(attrs[DEVLINK_ATTR_PORT_INDEX]);
283 struct devlink_port *devlink_port;
284
285 devlink_port = devlink_port_get_by_index(devlink, port_index);
286 if (!devlink_port)
287 return ERR_PTR(-ENODEV);
288 return devlink_port;
289 }
290 return ERR_PTR(-EINVAL);
291}
292
293static struct devlink_port *devlink_port_get_from_info(struct devlink *devlink,
294 struct genl_info *info)
295{
296 return devlink_port_get_from_attrs(devlink, info->attrs);
297}
298
4677efc4
DL		 299static inline bool
300devlink_rate_is_leaf(struct devlink_rate *devlink_rate)
301{
302 return devlink_rate->type == DEVLINK_RATE_TYPE_LEAF;
303}
304
a8ecb93e
DL		 305static inline bool
306devlink_rate_is_node(struct devlink_rate *devlink_rate)
307{
308 return devlink_rate->type == DEVLINK_RATE_TYPE_NODE;
309}
310
4677efc4
DL		 311static struct devlink_rate *
312devlink_rate_leaf_get_from_info(struct devlink *devlink, struct genl_info *info)
313{
314 struct devlink_rate *devlink_rate;
315 struct devlink_port *devlink_port;
316
317 devlink_port = devlink_port_get_from_attrs(devlink, info->attrs);
318 if (IS_ERR(devlink_port))
319 return ERR_CAST(devlink_port);
320 devlink_rate = devlink_port->devlink_rate;
321 return devlink_rate ?: ERR_PTR(-ENODEV);
322}
323
a8ecb93e
DL		 324static struct devlink_rate *
325devlink_rate_node_get_by_name(struct devlink *devlink, const char *node_name)
326{
327 static struct devlink_rate *devlink_rate;
328
329 list_for_each_entry(devlink_rate, &devlink->rate_list, list) {
330 if (devlink_rate_is_node(devlink_rate) &&
331 !strcmp(node_name, devlink_rate->name))
332 return devlink_rate;
333 }
334 return ERR_PTR(-ENODEV);
335}
336
337static struct devlink_rate *
338devlink_rate_node_get_from_attrs(struct devlink *devlink, struct nlattr **attrs)
339{
340 const char *rate_node_name;
341 size_t len;
342
343 if (!attrs[DEVLINK_ATTR_RATE_NODE_NAME])
344 return ERR_PTR(-EINVAL);
345 rate_node_name = nla_data(attrs[DEVLINK_ATTR_RATE_NODE_NAME]);
346 len = strlen(rate_node_name);
347 /* Name cannot be empty or decimal number */
348 if (!len || strspn(rate_node_name, "0123456789") == len)
349 return ERR_PTR(-EINVAL);
350
351 return devlink_rate_node_get_by_name(devlink, rate_node_name);
352}
353
354static struct devlink_rate *
355devlink_rate_node_get_from_info(struct devlink *devlink, struct genl_info *info)
356{
357 return devlink_rate_node_get_from_attrs(devlink, info->attrs);
358}
359
360static struct devlink_rate *
361devlink_rate_get_from_info(struct devlink *devlink, struct genl_info *info)
362{
363 struct nlattr **attrs = info->attrs;
364
365 if (attrs[DEVLINK_ATTR_PORT_INDEX])
366 return devlink_rate_leaf_get_from_info(devlink, info);
367 else if (attrs[DEVLINK_ATTR_RATE_NODE_NAME])
368 return devlink_rate_node_get_from_info(devlink, info);
369 else
370 return ERR_PTR(-EINVAL);
371}
372
bf797471
JP		 373struct devlink_sb {
374 struct list_head list;
375 unsigned int index;
376 u32 size;
377 u16 ingress_pools_count;
378 u16 egress_pools_count;
379 u16 ingress_tc_count;
380 u16 egress_tc_count;
381};
382
383static u16 devlink_sb_pool_count(struct devlink_sb *devlink_sb)
384{
385 return devlink_sb->ingress_pools_count + devlink_sb->egress_pools_count;
386}
387
388static struct devlink_sb *devlink_sb_get_by_index(struct devlink *devlink,
389 unsigned int sb_index)
390{
391 struct devlink_sb *devlink_sb;
392
393 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
394 if (devlink_sb->index == sb_index)
395 return devlink_sb;
396 }
397 return NULL;
398}
399
400static bool devlink_sb_index_exists(struct devlink *devlink,
401 unsigned int sb_index)
402{
403 return devlink_sb_get_by_index(devlink, sb_index);
404}
405
406static struct devlink_sb *devlink_sb_get_from_attrs(struct devlink *devlink,
407 struct nlattr **attrs)
408{
409 if (attrs[DEVLINK_ATTR_SB_INDEX]) {
410 u32 sb_index = nla_get_u32(attrs[DEVLINK_ATTR_SB_INDEX]);
411 struct devlink_sb *devlink_sb;
412
413 devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
414 if (!devlink_sb)
415 return ERR_PTR(-ENODEV);
416 return devlink_sb;
417 }
418 return ERR_PTR(-EINVAL);
419}
420
421static struct devlink_sb *devlink_sb_get_from_info(struct devlink *devlink,
422 struct genl_info *info)
423{
424 return devlink_sb_get_from_attrs(devlink, info->attrs);
425}
426
427static int devlink_sb_pool_index_get_from_attrs(struct devlink_sb *devlink_sb,
428 struct nlattr **attrs,
429 u16 *p_pool_index)
430{
431 u16 val;
432
433 if (!attrs[DEVLINK_ATTR_SB_POOL_INDEX])
434 return -EINVAL;
435
436 val = nla_get_u16(attrs[DEVLINK_ATTR_SB_POOL_INDEX]);
437 if (val >= devlink_sb_pool_count(devlink_sb))
438 return -EINVAL;
439 *p_pool_index = val;
440 return 0;
441}
442
443static int devlink_sb_pool_index_get_from_info(struct devlink_sb *devlink_sb,
444 struct genl_info *info,
445 u16 *p_pool_index)
446{
447 return devlink_sb_pool_index_get_from_attrs(devlink_sb, info->attrs,
448 p_pool_index);
449}
450
451static int
452devlink_sb_pool_type_get_from_attrs(struct nlattr **attrs,
453 enum devlink_sb_pool_type *p_pool_type)
454{
455 u8 val;
456
457 if (!attrs[DEVLINK_ATTR_SB_POOL_TYPE])
458 return -EINVAL;
459
460 val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_TYPE]);
461 if (val != DEVLINK_SB_POOL_TYPE_INGRESS &&
462 val != DEVLINK_SB_POOL_TYPE_EGRESS)
463 return -EINVAL;
464 *p_pool_type = val;
465 return 0;
466}
467
468static int
469devlink_sb_pool_type_get_from_info(struct genl_info *info,
470 enum devlink_sb_pool_type *p_pool_type)
471{
472 return devlink_sb_pool_type_get_from_attrs(info->attrs, p_pool_type);
473}
474
475static int
476devlink_sb_th_type_get_from_attrs(struct nlattr **attrs,
477 enum devlink_sb_threshold_type *p_th_type)
478{
479 u8 val;
480
481 if (!attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE])
482 return -EINVAL;
483
484 val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE]);
485 if (val != DEVLINK_SB_THRESHOLD_TYPE_STATIC &&
486 val != DEVLINK_SB_THRESHOLD_TYPE_DYNAMIC)
487 return -EINVAL;
488 *p_th_type = val;
489 return 0;
490}
491
492static int
493devlink_sb_th_type_get_from_info(struct genl_info *info,
494 enum devlink_sb_threshold_type *p_th_type)
495{
496 return devlink_sb_th_type_get_from_attrs(info->attrs, p_th_type);
497}
498
499static int
500devlink_sb_tc_index_get_from_attrs(struct devlink_sb *devlink_sb,
501 struct nlattr **attrs,
502 enum devlink_sb_pool_type pool_type,
503 u16 *p_tc_index)
504{
505 u16 val;
506
507 if (!attrs[DEVLINK_ATTR_SB_TC_INDEX])
508 return -EINVAL;
509
510 val = nla_get_u16(attrs[DEVLINK_ATTR_SB_TC_INDEX]);
511 if (pool_type == DEVLINK_SB_POOL_TYPE_INGRESS &&
512 val >= devlink_sb->ingress_tc_count)
513 return -EINVAL;
514 if (pool_type == DEVLINK_SB_POOL_TYPE_EGRESS &&
515 val >= devlink_sb->egress_tc_count)
516 return -EINVAL;
517 *p_tc_index = val;
518 return 0;
519}
520
521static int
522devlink_sb_tc_index_get_from_info(struct devlink_sb *devlink_sb,
523 struct genl_info *info,
524 enum devlink_sb_pool_type pool_type,
525 u16 *p_tc_index)
526{
527 return devlink_sb_tc_index_get_from_attrs(devlink_sb, info->attrs,
528 pool_type, p_tc_index);
529}
530
b16ebe92
AV		 531struct devlink_region {
532 struct devlink *devlink;
544e7c33 533 struct devlink_port *port;
b16ebe92 534 struct list_head list;
544e7c33
AL		 535 union {
536 const struct devlink_region_ops *ops;
537 const struct devlink_port_region_ops *port_ops;
538 };
b16ebe92
AV		 539 struct list_head snapshot_list;
540 u32 max_snapshots;
541 u32 cur_snapshots;
542 u64 size;
543};
544
d7e52722
AV		 545struct devlink_snapshot {
546 struct list_head list;
547 struct devlink_region *region;
d7e52722
AV		 548 u8 *data;
549 u32 id;
550};
551
b16ebe92
AV		 552static struct devlink_region *
553devlink_region_get_by_name(struct devlink *devlink, const char *region_name)
554{
555 struct devlink_region *region;
556
557 list_for_each_entry(region, &devlink->region_list, list)
e8937681 558 if (!strcmp(region->ops->name, region_name))
b16ebe92
AV		 559 return region;
560
561 return NULL;
562}
563
544e7c33
AL		 564static struct devlink_region *
565devlink_port_region_get_by_name(struct devlink_port *port,
566 const char *region_name)
567{
568 struct devlink_region *region;
569
570 list_for_each_entry(region, &port->region_list, list)
571 if (!strcmp(region->ops->name, region_name))
572 return region;
573
574 return NULL;
575}
576
d7e52722
AV		 577static struct devlink_snapshot *
578devlink_region_snapshot_get_by_id(struct devlink_region *region, u32 id)
579{
580 struct devlink_snapshot *snapshot;
581
582 list_for_each_entry(snapshot, &region->snapshot_list, list)
583 if (snapshot->id == id)
584 return snapshot;
585
586 return NULL;
587}
588
637989b5
PP		 589#define DEVLINK_NL_FLAG_NEED_PORT BIT(0)
590#define DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT BIT(1)
4677efc4 591#define DEVLINK_NL_FLAG_NEED_RATE BIT(2)
a8ecb93e 592#define DEVLINK_NL_FLAG_NEED_RATE_NODE BIT(3)
2406e7e5
AS		 593
594/* The per devlink instance lock is taken by default in the pre-doit
595 * operation, yet several commands do not require this. The global
596 * devlink lock is taken and protects from disruption by user-calls.
597 */
a8ecb93e 598#define DEVLINK_NL_FLAG_NO_LOCK BIT(4)
bfcd3a46
JP		 599
600static int devlink_nl_pre_doit(const struct genl_ops *ops,
601 struct sk_buff *skb, struct genl_info *info)
602{
f4f54166 603 struct devlink_port *devlink_port;
bfcd3a46 604 struct devlink *devlink;
2406e7e5 605 int err;
bfcd3a46
JP		 606
607 mutex_lock(&devlink_mutex);
437ebfd9 608 devlink = devlink_get_from_attrs(genl_info_net(info), info->attrs);
bfcd3a46
JP		 609 if (IS_ERR(devlink)) {
610 mutex_unlock(&devlink_mutex);
611 return PTR_ERR(devlink);
612 }
2406e7e5
AS		 613 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
614 mutex_lock(&devlink->lock);
637989b5
PP		 615 info->user_ptr[0] = devlink;
616 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT) {
bfcd3a46
JP		 617 devlink_port = devlink_port_get_from_info(devlink, info);
618 if (IS_ERR(devlink_port)) {
2406e7e5
AS		 619 err = PTR_ERR(devlink_port);
620 goto unlock;
bfcd3a46 621 }
637989b5 622 info->user_ptr[1] = devlink_port;
f4f54166 623 } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT) {
f4f54166
VT		 624 devlink_port = devlink_port_get_from_info(devlink, info);
625 if (!IS_ERR(devlink_port))
626 info->user_ptr[1] = devlink_port;
4677efc4
DL		 627 } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_RATE) {
628 struct devlink_rate *devlink_rate;
629
a8ecb93e 630 devlink_rate = devlink_rate_get_from_info(devlink, info);
4677efc4
DL		 631 if (IS_ERR(devlink_rate)) {
632 err = PTR_ERR(devlink_rate);
633 goto unlock;
634 }
635 info->user_ptr[1] = devlink_rate;
a8ecb93e
DL		 636 } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_RATE_NODE) {
637 struct devlink_rate *rate_node;
638
639 rate_node = devlink_rate_node_get_from_info(devlink, info);
640 if (IS_ERR(rate_node)) {
641 err = PTR_ERR(rate_node);
642 goto unlock;
643 }
644 info->user_ptr[1] = rate_node;
bfcd3a46
JP		 645 }
646 return 0;
2406e7e5
AS		 647
648unlock:
649 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
650 mutex_unlock(&devlink->lock);
437ebfd9 651 devlink_put(devlink);
2406e7e5
AS		 652 mutex_unlock(&devlink_mutex);
653 return err;
bfcd3a46
JP		 654}
655
656static void devlink_nl_post_doit(const struct genl_ops *ops,
657 struct sk_buff *skb, struct genl_info *info)
658{
2406e7e5
AS		 659 struct devlink *devlink;
660
637989b5
PP		 661 devlink = info->user_ptr[0];
662 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
2406e7e5 663 mutex_unlock(&devlink->lock);
437ebfd9 664 devlink_put(devlink);
bfcd3a46
JP		 665 mutex_unlock(&devlink_mutex);
666}
667
489111e5 668static struct genl_family devlink_nl_family;
bfcd3a46
JP		 669
670enum devlink_multicast_groups {
671 DEVLINK_MCGRP_CONFIG,
672};
673
674static const struct genl_multicast_group devlink_nl_mcgrps[] = {
675 [DEVLINK_MCGRP_CONFIG] = { .name = DEVLINK_GENL_MCGRP_CONFIG_NAME },
676};
677
678static int devlink_nl_put_handle(struct sk_buff *msg, struct devlink *devlink)
679{
680 if (nla_put_string(msg, DEVLINK_ATTR_BUS_NAME, devlink->dev->bus->name))
681 return -EMSGSIZE;
682 if (nla_put_string(msg, DEVLINK_ATTR_DEV_NAME, dev_name(devlink->dev)))
683 return -EMSGSIZE;
684 return 0;
685}
686
dc64cc7c
MS		 687struct devlink_reload_combination {
688 enum devlink_reload_action action;
689 enum devlink_reload_limit limit;
690};
691
692static const struct devlink_reload_combination devlink_reload_invalid_combinations[] = {
693 {
694 /* can't reinitialize driver with no down time */
695 .action = DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
696 .limit = DEVLINK_RELOAD_LIMIT_NO_RESET,
697 },
698};
699
700static bool
701devlink_reload_combination_is_invalid(enum devlink_reload_action action,
702 enum devlink_reload_limit limit)
703{
704 int i;
705
706 for (i = 0; i < ARRAY_SIZE(devlink_reload_invalid_combinations); i++)
707 if (devlink_reload_invalid_combinations[i].action == action &&
708 devlink_reload_invalid_combinations[i].limit == limit)
709 return true;
710 return false;
711}
712
ccdf0721
MS		 713static bool
714devlink_reload_action_is_supported(struct devlink *devlink, enum devlink_reload_action action)
715{
716 return test_bit(action, &devlink->ops->reload_actions);
717}
718
dc64cc7c
MS		 719static bool
720devlink_reload_limit_is_supported(struct devlink *devlink, enum devlink_reload_limit limit)
721{
722 return test_bit(limit, &devlink->ops->reload_limits);
723}
724
5204bb68 725static int devlink_reload_stat_put(struct sk_buff *msg,
a254c264
MS		 726 enum devlink_reload_limit limit, u32 value)
727{
728 struct nlattr *reload_stats_entry;
729
730 reload_stats_entry = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_STATS_ENTRY);
731 if (!reload_stats_entry)
732 return -EMSGSIZE;
733
5204bb68 734 if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_STATS_LIMIT, limit) ||
a254c264
MS		 735 nla_put_u32(msg, DEVLINK_ATTR_RELOAD_STATS_VALUE, value))
736 goto nla_put_failure;
737 nla_nest_end(msg, reload_stats_entry);
738 return 0;
739
740nla_put_failure:
741 nla_nest_cancel(msg, reload_stats_entry);
742 return -EMSGSIZE;
743}
744
77069ba2 745static int devlink_reload_stats_put(struct sk_buff *msg, struct devlink *devlink, bool is_remote)
a254c264 746{
5204bb68 747 struct nlattr *reload_stats_attr, *act_info, *act_stats;
a254c264
MS		 748 int i, j, stat_idx;
749 u32 value;
750
77069ba2
MS		 751 if (!is_remote)
752 reload_stats_attr = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_STATS);
753 else
754 reload_stats_attr = nla_nest_start(msg, DEVLINK_ATTR_REMOTE_RELOAD_STATS);
a254c264
MS		 755
756 if (!reload_stats_attr)
757 return -EMSGSIZE;
758
5204bb68
MS		 759 for (i = 0; i <= DEVLINK_RELOAD_ACTION_MAX; i++) {
760 if ((!is_remote &&
761 !devlink_reload_action_is_supported(devlink, i)) ||
762 i == DEVLINK_RELOAD_ACTION_UNSPEC)
a254c264 763 continue;
5204bb68
MS		 764 act_info = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_ACTION_INFO);
765 if (!act_info)
766 goto nla_put_failure;
767
768 if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_ACTION, i))
769 goto action_info_nest_cancel;
770 act_stats = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_ACTION_STATS);
771 if (!act_stats)
772 goto action_info_nest_cancel;
773
774 for (j = 0; j <= DEVLINK_RELOAD_LIMIT_MAX; j++) {
775 /* Remote stats are shown even if not locally supported.
776 * Stats of actions with unspecified limit are shown
777 * though drivers don't need to register unspecified
778 * limit.
779 */
780 if ((!is_remote && j != DEVLINK_RELOAD_LIMIT_UNSPEC &&
781 !devlink_reload_limit_is_supported(devlink, j)) ||
a254c264
MS		 782 devlink_reload_combination_is_invalid(i, j))
783 continue;
784
785 stat_idx = j * __DEVLINK_RELOAD_ACTION_MAX + i;
77069ba2
MS		 786 if (!is_remote)
787 value = devlink->stats.reload_stats[stat_idx];
788 else
789 value = devlink->stats.remote_reload_stats[stat_idx];
5204bb68
MS		 790 if (devlink_reload_stat_put(msg, j, value))
791 goto action_stats_nest_cancel;
a254c264 792 }
5204bb68
MS		 793 nla_nest_end(msg, act_stats);
794 nla_nest_end(msg, act_info);
a254c264
MS		 795 }
796 nla_nest_end(msg, reload_stats_attr);
797 return 0;
798
5204bb68
MS		 799action_stats_nest_cancel:
800 nla_nest_cancel(msg, act_stats);
801action_info_nest_cancel:
802 nla_nest_cancel(msg, act_info);
a254c264
MS		 803nla_put_failure:
804 nla_nest_cancel(msg, reload_stats_attr);
805 return -EMSGSIZE;
806}
807
bfcd3a46
JP		 808static int devlink_nl_fill(struct sk_buff *msg, struct devlink *devlink,
809 enum devlink_command cmd, u32 portid,
810 u32 seq, int flags)
811{
a254c264 812 struct nlattr *dev_stats;
bfcd3a46
JP		 813 void *hdr;
814
815 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
816 if (!hdr)
817 return -EMSGSIZE;
818
819 if (devlink_nl_put_handle(msg, devlink))
820 goto nla_put_failure;
2670ac26
JP		 821 if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_FAILED, devlink->reload_failed))
822 goto nla_put_failure;
bfcd3a46 823
a254c264
MS		 824 dev_stats = nla_nest_start(msg, DEVLINK_ATTR_DEV_STATS);
825 if (!dev_stats)
826 goto nla_put_failure;
827
77069ba2
MS		 828 if (devlink_reload_stats_put(msg, devlink, false))
829 goto dev_stats_nest_cancel;
830 if (devlink_reload_stats_put(msg, devlink, true))
a254c264
MS		 831 goto dev_stats_nest_cancel;
832
833 nla_nest_end(msg, dev_stats);
bfcd3a46
JP		 834 genlmsg_end(msg, hdr);
835 return 0;
836
a254c264
MS		 837dev_stats_nest_cancel:
838 nla_nest_cancel(msg, dev_stats);
bfcd3a46
JP		 839nla_put_failure:
840 genlmsg_cancel(msg, hdr);
841 return -EMSGSIZE;
842}
843
844static void devlink_notify(struct devlink *devlink, enum devlink_command cmd)
845{
846 struct sk_buff *msg;
847 int err;
848
849 WARN_ON(cmd != DEVLINK_CMD_NEW && cmd != DEVLINK_CMD_DEL);
cf530217 850 WARN_ON(!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED));
bfcd3a46
JP		 851
852 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
853 if (!msg)
854 return;
855
856 err = devlink_nl_fill(msg, devlink, cmd, 0, 0, 0);
857 if (err) {
858 nlmsg_free(msg);
859 return;
860 }
861
862 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
863 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
864}
865
b9ffcbaf
JP		 866static int devlink_nl_port_attrs_put(struct sk_buff *msg,
867 struct devlink_port *devlink_port)
868{
869 struct devlink_port_attrs *attrs = &devlink_port->attrs;
870
10a429ba 871 if (!devlink_port->attrs_set)
b9ffcbaf 872 return 0;
a21cf0a8
DR		 873 if (attrs->lanes) {
874 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_LANES, attrs->lanes))
875 return -EMSGSIZE;
876 }
a0f49b54
DR		 877 if (nla_put_u8(msg, DEVLINK_ATTR_PORT_SPLITTABLE, attrs->splittable))
878 return -EMSGSIZE;
5ec1380a
JP		 879 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_FLAVOUR, attrs->flavour))
880 return -EMSGSIZE;
58b6be41
PP		 881 switch (devlink_port->attrs.flavour) {
882 case DEVLINK_PORT_FLAVOUR_PCI_PF:
3a2d9588
PP		 883 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
884 attrs->pci_pf.controller) ||
885 nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_pf.pf))
98fd2d65 886 return -EMSGSIZE;
05b595e9
PP		 887 if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_pf.external))
888 return -EMSGSIZE;
58b6be41
PP		 889 break;
890 case DEVLINK_PORT_FLAVOUR_PCI_VF:
3a2d9588
PP		 891 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
892 attrs->pci_vf.controller) ||
893 nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_vf.pf) ||
894 nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_VF_NUMBER, attrs->pci_vf.vf))
e41b6bf3 895 return -EMSGSIZE;
05b595e9
PP		 896 if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_vf.external))
897 return -EMSGSIZE;
58b6be41 898 break;
b8288837
PP		 899 case DEVLINK_PORT_FLAVOUR_PCI_SF:
900 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
901 attrs->pci_sf.controller) ||
902 nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER,
903 attrs->pci_sf.pf) ||
904 nla_put_u32(msg, DEVLINK_ATTR_PORT_PCI_SF_NUMBER,
905 attrs->pci_sf.sf))
906 return -EMSGSIZE;
907 break;
58b6be41
PP		 908 case DEVLINK_PORT_FLAVOUR_PHYSICAL:
909 case DEVLINK_PORT_FLAVOUR_CPU:
910 case DEVLINK_PORT_FLAVOUR_DSA:
911 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_NUMBER,
912 attrs->phys.port_number))
913 return -EMSGSIZE;
914 if (!attrs->split)
915 return 0;
916 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_GROUP,
917 attrs->phys.port_number))
918 return -EMSGSIZE;
919 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_SUBPORT_NUMBER,
920 attrs->phys.split_subport_number))
921 return -EMSGSIZE;
922 break;
923 default:
924 break;
98fd2d65 925 }
b9ffcbaf
JP		 926 return 0;
927}
928
82564f6c
LR		 929static int devlink_port_fn_hw_addr_fill(const struct devlink_ops *ops,
930 struct devlink_port *port,
931 struct sk_buff *msg,
932 struct netlink_ext_ack *extack,
933 bool *msg_updated)
1230d948
PP		 934{
935 u8 hw_addr[MAX_ADDR_LEN];
936 int hw_addr_len;
937 int err;
938
939 if (!ops->port_function_hw_addr_get)
940 return 0;
941
82564f6c
LR		 942 err = ops->port_function_hw_addr_get(port, hw_addr, &hw_addr_len,
943 extack);
1230d948
PP		 944 if (err) {
945 if (err == -EOPNOTSUPP)
946 return 0;
947 return err;
948 }
949 err = nla_put(msg, DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR, hw_addr_len, hw_addr);
950 if (err)
951 return err;
952 *msg_updated = true;
953 return 0;
954}
955
4677efc4 956static int devlink_nl_rate_fill(struct sk_buff *msg,
4677efc4 957 struct devlink_rate *devlink_rate,
7ca973dc
LR		 958 enum devlink_command cmd, u32 portid, u32 seq,
959 int flags, struct netlink_ext_ack *extack)
4677efc4 960{
7ca973dc 961 struct devlink *devlink = devlink_rate->devlink;
4677efc4
DL		 962 void *hdr;
963
964 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
965 if (!hdr)
966 return -EMSGSIZE;
967
968 if (devlink_nl_put_handle(msg, devlink))
969 goto nla_put_failure;
970
971 if (nla_put_u16(msg, DEVLINK_ATTR_RATE_TYPE, devlink_rate->type))
972 goto nla_put_failure;
973
974 if (devlink_rate_is_leaf(devlink_rate)) {
975 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
976 devlink_rate->devlink_port->index))
977 goto nla_put_failure;
a8ecb93e
DL		 978 } else if (devlink_rate_is_node(devlink_rate)) {
979 if (nla_put_string(msg, DEVLINK_ATTR_RATE_NODE_NAME,
980 devlink_rate->name))
981 goto nla_put_failure;
4677efc4
DL		 982 }
983
1897db2e
DL		 984 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_RATE_TX_SHARE,
985 devlink_rate->tx_share, DEVLINK_ATTR_PAD))
986 goto nla_put_failure;
987
988 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_RATE_TX_MAX,
989 devlink_rate->tx_max, DEVLINK_ATTR_PAD))
990 goto nla_put_failure;
991
d7555984
DL		 992 if (devlink_rate->parent)
993 if (nla_put_string(msg, DEVLINK_ATTR_RATE_PARENT_NODE_NAME,
994 devlink_rate->parent->name))
995 goto nla_put_failure;
996
4677efc4
DL		 997 genlmsg_end(msg, hdr);
998 return 0;
999
1000nla_put_failure:
1001 genlmsg_cancel(msg, hdr);
1002 return -EMSGSIZE;
1003}
1004
a556dded
PP		 1005static bool
1006devlink_port_fn_state_valid(enum devlink_port_fn_state state)
1007{
1008 return state == DEVLINK_PORT_FN_STATE_INACTIVE ||
1009 state == DEVLINK_PORT_FN_STATE_ACTIVE;
1010}
1011
1012static bool
1013devlink_port_fn_opstate_valid(enum devlink_port_fn_opstate opstate)
1014{
1015 return opstate == DEVLINK_PORT_FN_OPSTATE_DETACHED ||
1016 opstate == DEVLINK_PORT_FN_OPSTATE_ATTACHED;
1017}
1018
82564f6c
LR		 1019static int devlink_port_fn_state_fill(const struct devlink_ops *ops,
1020 struct devlink_port *port,
1021 struct sk_buff *msg,
1022 struct netlink_ext_ack *extack,
1023 bool *msg_updated)
a556dded
PP		 1024{
1025 enum devlink_port_fn_opstate opstate;
1026 enum devlink_port_fn_state state;
1027 int err;
1028
1029 if (!ops->port_fn_state_get)
1030 return 0;
1031
82564f6c 1032 err = ops->port_fn_state_get(port, &state, &opstate, extack);
a556dded
PP		 1033 if (err) {
1034 if (err == -EOPNOTSUPP)
1035 return 0;
1036 return err;
1037 }
1038 if (!devlink_port_fn_state_valid(state)) {
1039 WARN_ON_ONCE(1);
1040 NL_SET_ERR_MSG_MOD(extack, "Invalid state read from driver");
1041 return -EINVAL;
1042 }
1043 if (!devlink_port_fn_opstate_valid(opstate)) {
1044 WARN_ON_ONCE(1);
1045 NL_SET_ERR_MSG_MOD(extack,
1046 "Invalid operational state read from driver");
1047 return -EINVAL;
1048 }
1049 if (nla_put_u8(msg, DEVLINK_PORT_FN_ATTR_STATE, state) ||
1050 nla_put_u8(msg, DEVLINK_PORT_FN_ATTR_OPSTATE, opstate))
1051 return -EMSGSIZE;
1052 *msg_updated = true;
1053 return 0;
1054}
1055
2a916ecc
PP		 1056static int
1057devlink_nl_port_function_attrs_put(struct sk_buff *msg, struct devlink_port *port,
1058 struct netlink_ext_ack *extack)
1059{
2a916ecc
PP		 1060 const struct devlink_ops *ops;
1061 struct nlattr *function_attr;
1230d948
PP		 1062 bool msg_updated = false;
1063 int err;
2a916ecc
PP		 1064
1065 function_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PORT_FUNCTION);
1066 if (!function_attr)
1067 return -EMSGSIZE;
1068
82564f6c
LR		 1069 ops = port->devlink->ops;
1070 err = devlink_port_fn_hw_addr_fill(ops, port, msg, extack,
1071 &msg_updated);
a556dded
PP		 1072 if (err)
1073 goto out;
82564f6c 1074 err = devlink_port_fn_state_fill(ops, port, msg, extack, &msg_updated);
2a916ecc 1075out:
1230d948 1076 if (err || !msg_updated)
2a916ecc
PP		 1077 nla_nest_cancel(msg, function_attr);
1078 else
1079 nla_nest_end(msg, function_attr);
1080 return err;
1081}
1082
7ca973dc 1083static int devlink_nl_port_fill(struct sk_buff *msg,
bfcd3a46 1084 struct devlink_port *devlink_port,
7ca973dc
LR		 1085 enum devlink_command cmd, u32 portid, u32 seq,
1086 int flags, struct netlink_ext_ack *extack)
bfcd3a46 1087{
7ca973dc 1088 struct devlink *devlink = devlink_port->devlink;
bfcd3a46
JP		 1089 void *hdr;
1090
1091 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1092 if (!hdr)
1093 return -EMSGSIZE;
1094
1095 if (devlink_nl_put_handle(msg, devlink))
1096 goto nla_put_failure;
1097 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
1098 goto nla_put_failure;
b8f97554 1099
b187c9b4
PP		 1100 /* Hold rtnl lock while accessing port's netdev attributes. */
1101 rtnl_lock();
0f420b6c 1102 spin_lock_bh(&devlink_port->type_lock);
bfcd3a46 1103 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_TYPE, devlink_port->type))
b8f97554 1104 goto nla_put_failure_type_locked;
bfcd3a46
JP		 1105 if (devlink_port->desired_type != DEVLINK_PORT_TYPE_NOTSET &&
1106 nla_put_u16(msg, DEVLINK_ATTR_PORT_DESIRED_TYPE,
1107 devlink_port->desired_type))
b8f97554 1108 goto nla_put_failure_type_locked;
bfcd3a46 1109 if (devlink_port->type == DEVLINK_PORT_TYPE_ETH) {
a7b43649 1110 struct net *net = devlink_net(devlink_port->devlink);
bfcd3a46
JP		 1111 struct net_device *netdev = devlink_port->type_dev;
1112
a7b43649 1113 if (netdev && net_eq(net, dev_net(netdev)) &&
bfcd3a46
JP		 1114 (nla_put_u32(msg, DEVLINK_ATTR_PORT_NETDEV_IFINDEX,
1115 netdev->ifindex) ||
1116 nla_put_string(msg, DEVLINK_ATTR_PORT_NETDEV_NAME,
1117 netdev->name)))
b8f97554 1118 goto nla_put_failure_type_locked;
bfcd3a46
JP		 1119 }
1120 if (devlink_port->type == DEVLINK_PORT_TYPE_IB) {
1121 struct ib_device *ibdev = devlink_port->type_dev;
1122
1123 if (ibdev &&
1124 nla_put_string(msg, DEVLINK_ATTR_PORT_IBDEV_NAME,
1125 ibdev->name))
b8f97554 1126 goto nla_put_failure_type_locked;
bfcd3a46 1127 }
0f420b6c 1128 spin_unlock_bh(&devlink_port->type_lock);
b187c9b4 1129 rtnl_unlock();
b9ffcbaf 1130 if (devlink_nl_port_attrs_put(msg, devlink_port))
bfcd3a46 1131 goto nla_put_failure;
2a916ecc
PP		 1132 if (devlink_nl_port_function_attrs_put(msg, devlink_port, extack))
1133 goto nla_put_failure;
bfcd3a46
JP		 1134
1135 genlmsg_end(msg, hdr);
1136 return 0;
1137
b8f97554 1138nla_put_failure_type_locked:
0f420b6c 1139 spin_unlock_bh(&devlink_port->type_lock);
b187c9b4 1140 rtnl_unlock();
bfcd3a46
JP		 1141nla_put_failure:
1142 genlmsg_cancel(msg, hdr);
1143 return -EMSGSIZE;
1144}
1145
1146static void devlink_port_notify(struct devlink_port *devlink_port,
1147 enum devlink_command cmd)
1148{
cf530217 1149 struct devlink *devlink = devlink_port->devlink;
bfcd3a46
JP		 1150 struct sk_buff *msg;
1151 int err;
1152
bfcd3a46
JP		 1153 WARN_ON(cmd != DEVLINK_CMD_PORT_NEW && cmd != DEVLINK_CMD_PORT_DEL);
1154
cf530217
LR		 1155 if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
1156 return;
1157
bfcd3a46
JP		 1158 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1159 if (!msg)
1160 return;
1161
7ca973dc 1162 err = devlink_nl_port_fill(msg, devlink_port, cmd, 0, 0, 0, NULL);
bfcd3a46
JP		 1163 if (err) {
1164 nlmsg_free(msg);
1165 return;
1166 }
1167
cf530217
LR		 1168 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
1169 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
bfcd3a46
JP		 1170}
1171
4677efc4
DL		 1172static void devlink_rate_notify(struct devlink_rate *devlink_rate,
1173 enum devlink_command cmd)
1174{
cf530217 1175 struct devlink *devlink = devlink_rate->devlink;
4677efc4
DL		 1176 struct sk_buff *msg;
1177 int err;
1178
7ca973dc 1179 WARN_ON(cmd != DEVLINK_CMD_RATE_NEW && cmd != DEVLINK_CMD_RATE_DEL);
ef91abfb
LR		 1180
1181 if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
1182 return;
4677efc4
DL		 1183
1184 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1185 if (!msg)
1186 return;
1187
7ca973dc 1188 err = devlink_nl_rate_fill(msg, devlink_rate, cmd, 0, 0, 0, NULL);
4677efc4
DL		 1189 if (err) {
1190 nlmsg_free(msg);
1191 return;
1192 }
1193
cf530217
LR		 1194 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
1195 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
4677efc4
DL		 1196}
1197
1198static int devlink_nl_cmd_rate_get_dumpit(struct sk_buff *msg,
1199 struct netlink_callback *cb)
1200{
1201 struct devlink_rate *devlink_rate;
1202 struct devlink *devlink;
1203 int start = cb->args[0];
11a861d7 1204 unsigned long index;
4677efc4
DL		 1205 int idx = 0;
1206 int err = 0;
1207
1208 mutex_lock(&devlink_mutex);
11a861d7 1209 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
437ebfd9 1210 if (!devlink_try_get(devlink))
4677efc4 1211 continue;
437ebfd9
LR		 1212
1213 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
1214 goto retry;
1215
4677efc4
DL		 1216 mutex_lock(&devlink->lock);
1217 list_for_each_entry(devlink_rate, &devlink->rate_list, list) {
1218 enum devlink_command cmd = DEVLINK_CMD_RATE_NEW;
1219 u32 id = NETLINK_CB(cb->skb).portid;
1220
1221 if (idx < start) {
1222 idx++;
1223 continue;
1224 }
7ca973dc 1225 err = devlink_nl_rate_fill(msg, devlink_rate, cmd, id,
4677efc4
DL		 1226 cb->nlh->nlmsg_seq,
1227 NLM_F_MULTI, NULL);
1228 if (err) {
1229 mutex_unlock(&devlink->lock);
437ebfd9 1230 devlink_put(devlink);
4677efc4
DL		 1231 goto out;
1232 }
1233 idx++;
1234 }
1235 mutex_unlock(&devlink->lock);
437ebfd9
LR		 1236retry:
1237 devlink_put(devlink);
4677efc4
DL		 1238 }
1239out:
1240 mutex_unlock(&devlink_mutex);
1241 if (err != -EMSGSIZE)
1242 return err;
1243
1244 cb->args[0] = idx;
1245 return msg->len;
1246}
1247
1248static int devlink_nl_cmd_rate_get_doit(struct sk_buff *skb,
1249 struct genl_info *info)
1250{
1251 struct devlink_rate *devlink_rate = info->user_ptr[1];
4677efc4
DL		 1252 struct sk_buff *msg;
1253 int err;
1254
1255 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1256 if (!msg)
1257 return -ENOMEM;
1258
7ca973dc 1259 err = devlink_nl_rate_fill(msg, devlink_rate, DEVLINK_CMD_RATE_NEW,
4677efc4
DL		 1260 info->snd_portid, info->snd_seq, 0,
1261 info->extack);
1262 if (err) {
1263 nlmsg_free(msg);
1264 return err;
1265 }
1266
1267 return genlmsg_reply(msg, info);
1268}
1269
d7555984
DL		 1270static bool
1271devlink_rate_is_parent_node(struct devlink_rate *devlink_rate,
1272 struct devlink_rate *parent)
1273{
1274 while (parent) {
1275 if (parent == devlink_rate)
1276 return true;
1277 parent = parent->parent;
1278 }
1279 return false;
1280}
1281
bfcd3a46
JP		 1282static int devlink_nl_cmd_get_doit(struct sk_buff *skb, struct genl_info *info)
1283{
1284 struct devlink *devlink = info->user_ptr[0];
1285 struct sk_buff *msg;
1286 int err;
1287
1288 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1289 if (!msg)
1290 return -ENOMEM;
1291
1292 err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
1293 info->snd_portid, info->snd_seq, 0);
1294 if (err) {
1295 nlmsg_free(msg);
1296 return err;
1297 }
1298
1299 return genlmsg_reply(msg, info);
1300}
1301
1302static int devlink_nl_cmd_get_dumpit(struct sk_buff *msg,
1303 struct netlink_callback *cb)
1304{
1305 struct devlink *devlink;
1306 int start = cb->args[0];
11a861d7 1307 unsigned long index;
bfcd3a46
JP		 1308 int idx = 0;
1309 int err;
1310
1311 mutex_lock(&devlink_mutex);
11a861d7 1312 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
437ebfd9 1313 if (!devlink_try_get(devlink))
bfcd3a46 1314 continue;
437ebfd9
LR		 1315
1316 if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) {
1317 devlink_put(devlink);
1318 continue;
1319 }
1320
bfcd3a46
JP		 1321 if (idx < start) {
1322 idx++;
437ebfd9 1323 devlink_put(devlink);
bfcd3a46
JP		 1324 continue;
1325 }
437ebfd9 1326
bfcd3a46
JP		 1327 err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
1328 NETLINK_CB(cb->skb).portid,
1329 cb->nlh->nlmsg_seq, NLM_F_MULTI);
437ebfd9 1330 devlink_put(devlink);
bfcd3a46
JP		 1331 if (err)
1332 goto out;
1333 idx++;
1334 }
1335out:
1336 mutex_unlock(&devlink_mutex);
1337
1338 cb->args[0] = idx;
1339 return msg->len;
1340}
1341
1342static int devlink_nl_cmd_port_get_doit(struct sk_buff *skb,
1343 struct genl_info *info)
1344{
637989b5 1345 struct devlink_port *devlink_port = info->user_ptr[1];
bfcd3a46
JP		 1346 struct sk_buff *msg;
1347 int err;
1348
1349 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1350 if (!msg)
1351 return -ENOMEM;
1352
7ca973dc 1353 err = devlink_nl_port_fill(msg, devlink_port, DEVLINK_CMD_PORT_NEW,
a829eb0d
PP		 1354 info->snd_portid, info->snd_seq, 0,
1355 info->extack);
bfcd3a46
JP		 1356 if (err) {
1357 nlmsg_free(msg);
1358 return err;
1359 }
1360
1361 return genlmsg_reply(msg, info);
1362}
1363
1364static int devlink_nl_cmd_port_get_dumpit(struct sk_buff *msg,
1365 struct netlink_callback *cb)
1366{
1367 struct devlink *devlink;
1368 struct devlink_port *devlink_port;
1369 int start = cb->args[0];
11a861d7 1370 unsigned long index;
bfcd3a46
JP		 1371 int idx = 0;
1372 int err;
1373
1374 mutex_lock(&devlink_mutex);
11a861d7 1375 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
437ebfd9 1376 if (!devlink_try_get(devlink))
bfcd3a46 1377 continue;
437ebfd9
LR		 1378
1379 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
1380 goto retry;
1381
2406e7e5 1382 mutex_lock(&devlink->lock);
bfcd3a46
JP		 1383 list_for_each_entry(devlink_port, &devlink->port_list, list) {
1384 if (idx < start) {
1385 idx++;
1386 continue;
1387 }
7ca973dc 1388 err = devlink_nl_port_fill(msg, devlink_port,
bfcd3a46
JP		 1389 DEVLINK_CMD_NEW,
1390 NETLINK_CB(cb->skb).portid,
1391 cb->nlh->nlmsg_seq,
7ca973dc 1392 NLM_F_MULTI, cb->extack);
2406e7e5
AS		 1393 if (err) {
1394 mutex_unlock(&devlink->lock);
437ebfd9 1395 devlink_put(devlink);
bfcd3a46 1396 goto out;
2406e7e5 1397 }
bfcd3a46
JP		 1398 idx++;
1399 }
2406e7e5 1400 mutex_unlock(&devlink->lock);
437ebfd9
LR		 1401retry:
1402 devlink_put(devlink);
bfcd3a46
JP		 1403 }
1404out:
bfcd3a46
JP		 1405 mutex_unlock(&devlink_mutex);
1406
1407 cb->args[0] = idx;
1408 return msg->len;
1409}
1410
82564f6c 1411static int devlink_port_type_set(struct devlink_port *devlink_port,
bfcd3a46
JP		 1412 enum devlink_port_type port_type)
1413
1414{
1415 int err;
1416
2a2b6e36 1417 if (!devlink_port->devlink->ops->port_type_set)
82564f6c
LR		 1418 return -EOPNOTSUPP;
1419
1420 if (port_type == devlink_port->type)
bfcd3a46 1421 return 0;
82564f6c
LR		 1422
1423 err = devlink_port->devlink->ops->port_type_set(devlink_port,
1424 port_type);
1425 if (err)
1426 return err;
1427
1428 devlink_port->desired_type = port_type;
1429 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
1430 return 0;
bfcd3a46
JP		 1431}
1432
82564f6c
LR		 1433static int devlink_port_function_hw_addr_set(struct devlink_port *port,
1434 const struct nlattr *attr,
1435 struct netlink_ext_ack *extack)
a1e8ae90 1436{
82564f6c 1437 const struct devlink_ops *ops = port->devlink->ops;
a1e8ae90
PP		 1438 const u8 *hw_addr;
1439 int hw_addr_len;
a1e8ae90
PP		 1440
1441 hw_addr = nla_data(attr);
1442 hw_addr_len = nla_len(attr);
1443 if (hw_addr_len > MAX_ADDR_LEN) {
1444 NL_SET_ERR_MSG_MOD(extack, "Port function hardware address too long");
1445 return -EINVAL;
1446 }
1447 if (port->type == DEVLINK_PORT_TYPE_ETH) {
1448 if (hw_addr_len != ETH_ALEN) {
1449 NL_SET_ERR_MSG_MOD(extack, "Address must be 6 bytes for Ethernet device");
1450 return -EINVAL;
1451 }
1452 if (!is_unicast_ether_addr(hw_addr)) {
1453 NL_SET_ERR_MSG_MOD(extack, "Non-unicast hardware address unsupported");
1454 return -EINVAL;
1455 }
1456 }
1457
a1e8ae90
PP		 1458 if (!ops->port_function_hw_addr_set) {
1459 NL_SET_ERR_MSG_MOD(extack, "Port doesn't support function attributes");
1460 return -EOPNOTSUPP;
1461 }
1462
82564f6c
LR		 1463 return ops->port_function_hw_addr_set(port, hw_addr, hw_addr_len,
1464 extack);
a1e8ae90 1465}
a1e8ae90 1466
82564f6c 1467static int devlink_port_fn_state_set(struct devlink_port *port,
a556dded
PP		 1468 const struct nlattr *attr,
1469 struct netlink_ext_ack *extack)
1470{
1471 enum devlink_port_fn_state state;
1472 const struct devlink_ops *ops;
1473
1474 state = nla_get_u8(attr);
82564f6c 1475 ops = port->devlink->ops;
a556dded
PP		 1476 if (!ops->port_fn_state_set) {
1477 NL_SET_ERR_MSG_MOD(extack,
1478 "Function does not support state setting");
1479 return -EOPNOTSUPP;
1480 }
82564f6c 1481 return ops->port_fn_state_set(port, state, extack);
a1e8ae90
PP		 1482}
1483
82564f6c
LR		 1484static int devlink_port_function_set(struct devlink_port *port,
1485 const struct nlattr *attr,
1486 struct netlink_ext_ack *extack)
a1e8ae90
PP		 1487{
1488 struct nlattr *tb[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1];
1489 int err;
1490
1491 err = nla_parse_nested(tb, DEVLINK_PORT_FUNCTION_ATTR_MAX, attr,
1492 devlink_function_nl_policy, extack);
1493 if (err < 0) {
1494 NL_SET_ERR_MSG_MOD(extack, "Fail to parse port function attributes");
1495 return err;
1496 }
1497
1498 attr = tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR];
a556dded 1499 if (attr) {
82564f6c 1500 err = devlink_port_function_hw_addr_set(port, attr, extack);
a556dded
PP		 1501 if (err)
1502 return err;
1503 }
1504 /* Keep this as the last function attribute set, so that when
1505 * multiple port function attributes are set along with state,
1506 * Those can be applied first before activating the state.
1507 */
1508 attr = tb[DEVLINK_PORT_FN_ATTR_STATE];
1509 if (attr)
82564f6c 1510 err = devlink_port_fn_state_set(port, attr, extack);
a1e8ae90 1511
1230d948
PP		 1512 if (!err)
1513 devlink_port_notify(port, DEVLINK_CMD_PORT_NEW);
a1e8ae90
PP		 1514 return err;
1515}
1516
bfcd3a46
JP		 1517static int devlink_nl_cmd_port_set_doit(struct sk_buff *skb,
1518 struct genl_info *info)
1519{
637989b5 1520 struct devlink_port *devlink_port = info->user_ptr[1];
bfcd3a46
JP		 1521 int err;
1522
1523 if (info->attrs[DEVLINK_ATTR_PORT_TYPE]) {
1524 enum devlink_port_type port_type;
1525
1526 port_type = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_TYPE]);
82564f6c 1527 err = devlink_port_type_set(devlink_port, port_type);
bfcd3a46
JP		 1528 if (err)
1529 return err;
1530 }
a1e8ae90
PP		 1531
1532 if (info->attrs[DEVLINK_ATTR_PORT_FUNCTION]) {
1533 struct nlattr *attr = info->attrs[DEVLINK_ATTR_PORT_FUNCTION];
1534 struct netlink_ext_ack *extack = info->extack;
1535
82564f6c 1536 err = devlink_port_function_set(devlink_port, attr, extack);
a1e8ae90
PP		 1537 if (err)
1538 return err;
1539 }
1540
bfcd3a46
JP		 1541 return 0;
1542}
1543
ac0fc8a1
DA		 1544static int devlink_port_split(struct devlink *devlink, u32 port_index,
1545 u32 count, struct netlink_ext_ack *extack)
bfcd3a46
JP		 1546
1547{
be6fe1d8 1548 if (devlink->ops->port_split)
ac0fc8a1
DA		 1549 return devlink->ops->port_split(devlink, port_index, count,
1550 extack);
bfcd3a46
JP		 1551 return -EOPNOTSUPP;
1552}
1553
1554static int devlink_nl_cmd_port_split_doit(struct sk_buff *skb,
1555 struct genl_info *info)
1556{
1557 struct devlink *devlink = info->user_ptr[0];
82901ad1 1558 struct devlink_port *devlink_port;
bfcd3a46
JP		 1559 u32 port_index;
1560 u32 count;
1561
1562 if (!info->attrs[DEVLINK_ATTR_PORT_INDEX] ||
1563 !info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT])
1564 return -EINVAL;
1565
82901ad1 1566 devlink_port = devlink_port_get_from_info(devlink, info);
bfcd3a46
JP		 1567 port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
1568 count = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT]);
82901ad1
DR		 1569
1570 if (IS_ERR(devlink_port))
1571 return -EINVAL;
1572
1573 if (!devlink_port->attrs.splittable) {
1574 /* Split ports cannot be split. */
1575 if (devlink_port->attrs.split)
1576 NL_SET_ERR_MSG_MOD(info->extack, "Port cannot be split further");
1577 else
1578 NL_SET_ERR_MSG_MOD(info->extack, "Port cannot be split");
1579 return -EINVAL;
1580 }
1581
1582 if (count < 2 || !is_power_of_2(count) || count > devlink_port->attrs.lanes) {
1583 NL_SET_ERR_MSG_MOD(info->extack, "Invalid split count");
1584 return -EINVAL;
1585 }
1586
ac0fc8a1 1587 return devlink_port_split(devlink, port_index, count, info->extack);
bfcd3a46
JP		 1588}
1589
ac0fc8a1
DA		 1590static int devlink_port_unsplit(struct devlink *devlink, u32 port_index,
1591 struct netlink_ext_ack *extack)
bfcd3a46
JP		 1592
1593{
be6fe1d8 1594 if (devlink->ops->port_unsplit)
ac0fc8a1 1595 return devlink->ops->port_unsplit(devlink, port_index, extack);
bfcd3a46
JP		 1596 return -EOPNOTSUPP;
1597}
1598
1599static int devlink_nl_cmd_port_unsplit_doit(struct sk_buff *skb,
1600 struct genl_info *info)
1601{
1602 struct devlink *devlink = info->user_ptr[0];
1603 u32 port_index;
1604
1605 if (!info->attrs[DEVLINK_ATTR_PORT_INDEX])
1606 return -EINVAL;
1607
1608 port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
ac0fc8a1 1609 return devlink_port_unsplit(devlink, port_index, info->extack);
bfcd3a46
JP		 1610}
1611
cd76dcd6
PP		 1612static int devlink_port_new_notifiy(struct devlink *devlink,
1613 unsigned int port_index,
1614 struct genl_info *info)
1615{
1616 struct devlink_port *devlink_port;
1617 struct sk_buff *msg;
1618 int err;
1619
1620 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1621 if (!msg)
1622 return -ENOMEM;
1623
1624 mutex_lock(&devlink->lock);
1625 devlink_port = devlink_port_get_by_index(devlink, port_index);
1626 if (!devlink_port) {
1627 err = -ENODEV;
1628 goto out;
1629 }
1630
7ca973dc
LR		 1631 err = devlink_nl_port_fill(msg, devlink_port, DEVLINK_CMD_NEW,
1632 info->snd_portid, info->snd_seq, 0, NULL);
cd76dcd6
PP		 1633 if (err)
1634 goto out;
1635
1636 err = genlmsg_reply(msg, info);
1637 mutex_unlock(&devlink->lock);
1638 return err;
1639
1640out:
1641 mutex_unlock(&devlink->lock);
1642 nlmsg_free(msg);
1643 return err;
1644}
1645
1646static int devlink_nl_cmd_port_new_doit(struct sk_buff *skb,
1647 struct genl_info *info)
1648{
1649 struct netlink_ext_ack *extack = info->extack;
1650 struct devlink_port_new_attrs new_attrs = {};
1651 struct devlink *devlink = info->user_ptr[0];
1652 unsigned int new_port_index;
1653 int err;
1654
1655 if (!devlink->ops->port_new || !devlink->ops->port_del)
1656 return -EOPNOTSUPP;
1657
1658 if (!info->attrs[DEVLINK_ATTR_PORT_FLAVOUR] ||
1659 !info->attrs[DEVLINK_ATTR_PORT_PCI_PF_NUMBER]) {
1660 NL_SET_ERR_MSG_MOD(extack, "Port flavour or PCI PF are not specified");
1661 return -EINVAL;
1662 }
1663 new_attrs.flavour = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_FLAVOUR]);
1664 new_attrs.pfnum =
1665 nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_PCI_PF_NUMBER]);
1666
1667 if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
1668 /* Port index of the new port being created by driver. */
1669 new_attrs.port_index =
1670 nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
1671 new_attrs.port_index_valid = true;
1672 }
1673 if (info->attrs[DEVLINK_ATTR_PORT_CONTROLLER_NUMBER]) {
1674 new_attrs.controller =
1675 nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_CONTROLLER_NUMBER]);
1676 new_attrs.controller_valid = true;
1677 }
1678 if (new_attrs.flavour == DEVLINK_PORT_FLAVOUR_PCI_SF &&
1679 info->attrs[DEVLINK_ATTR_PORT_PCI_SF_NUMBER]) {
1680 new_attrs.sfnum = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_PCI_SF_NUMBER]);
1681 new_attrs.sfnum_valid = true;
1682 }
1683
1684 err = devlink->ops->port_new(devlink, &new_attrs, extack,
1685 &new_port_index);
1686 if (err)
1687 return err;
1688
1689 err = devlink_port_new_notifiy(devlink, new_port_index, info);
1690 if (err && err != -ENODEV) {
1691 /* Fail to send the response; destroy newly created port. */
1692 devlink->ops->port_del(devlink, new_port_index, extack);
1693 }
1694 return err;
1695}
1696
1697static int devlink_nl_cmd_port_del_doit(struct sk_buff *skb,
1698 struct genl_info *info)
1699{
1700 struct netlink_ext_ack *extack = info->extack;
1701 struct devlink *devlink = info->user_ptr[0];
1702 unsigned int port_index;
1703
1704 if (!devlink->ops->port_del)
1705 return -EOPNOTSUPP;
1706
1707 if (!info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
1708 NL_SET_ERR_MSG_MOD(extack, "Port index is not specified");
1709 return -EINVAL;
1710 }
1711 port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
1712
1713 return devlink->ops->port_del(devlink, port_index, extack);
1714}
1715
d7555984
DL		 1716static int
1717devlink_nl_rate_parent_node_set(struct devlink_rate *devlink_rate,
1718 struct genl_info *info,
1719 struct nlattr *nla_parent)
1720{
1721 struct devlink *devlink = devlink_rate->devlink;
1722 const char *parent_name = nla_data(nla_parent);
1723 const struct devlink_ops *ops = devlink->ops;
1724 size_t len = strlen(parent_name);
1725 struct devlink_rate *parent;
1726 int err = -EOPNOTSUPP;
1727
1728 parent = devlink_rate->parent;
1729 if (parent && len) {
1730 NL_SET_ERR_MSG_MOD(info->extack, "Rate object already has parent.");
1731 return -EBUSY;
1732 } else if (parent && !len) {
1733 if (devlink_rate_is_leaf(devlink_rate))
1734 err = ops->rate_leaf_parent_set(devlink_rate, NULL,
1735 devlink_rate->priv, NULL,
1736 info->extack);
1737 else if (devlink_rate_is_node(devlink_rate))
1738 err = ops->rate_node_parent_set(devlink_rate, NULL,
1739 devlink_rate->priv, NULL,
1740 info->extack);
1741 if (err)
1742 return err;
1743
1744 refcount_dec(&parent->refcnt);
1745 devlink_rate->parent = NULL;
1746 } else if (!parent && len) {
1747 parent = devlink_rate_node_get_by_name(devlink, parent_name);
1748 if (IS_ERR(parent))
1749 return -ENODEV;
1750
1751 if (parent == devlink_rate) {
1752 NL_SET_ERR_MSG_MOD(info->extack, "Parent to self is not allowed");
1753 return -EINVAL;
1754 }
1755
1756 if (devlink_rate_is_node(devlink_rate) &&
1757 devlink_rate_is_parent_node(devlink_rate, parent->parent)) {
1758 NL_SET_ERR_MSG_MOD(info->extack, "Node is already a parent of parent node.");
1759 return -EEXIST;
1760 }
1761
1762 if (devlink_rate_is_leaf(devlink_rate))
1763 err = ops->rate_leaf_parent_set(devlink_rate, parent,
1764 devlink_rate->priv, parent->priv,
1765 info->extack);
1766 else if (devlink_rate_is_node(devlink_rate))
1767 err = ops->rate_node_parent_set(devlink_rate, parent,
1768 devlink_rate->priv, parent->priv,
1769 info->extack);
1770 if (err)
1771 return err;
1772
1773 refcount_inc(&parent->refcnt);
1774 devlink_rate->parent = parent;
1775 }
1776
1777 return 0;
1778}
1779
1897db2e
DL		 1780static int devlink_nl_rate_set(struct devlink_rate *devlink_rate,
1781 const struct devlink_ops *ops,
1782 struct genl_info *info)
1783{
d7555984 1784 struct nlattr *nla_parent, **attrs = info->attrs;
a8ecb93e 1785 int err = -EOPNOTSUPP;
1897db2e 1786 u64 rate;
1897db2e
DL		 1787
1788 if (attrs[DEVLINK_ATTR_RATE_TX_SHARE]) {
1789 rate = nla_get_u64(attrs[DEVLINK_ATTR_RATE_TX_SHARE]);
a8ecb93e
DL		 1790 if (devlink_rate_is_leaf(devlink_rate))
1791 err = ops->rate_leaf_tx_share_set(devlink_rate, devlink_rate->priv,
1792 rate, info->extack);
1793 else if (devlink_rate_is_node(devlink_rate))
1794 err = ops->rate_node_tx_share_set(devlink_rate, devlink_rate->priv,
1795 rate, info->extack);
1897db2e
DL		 1796 if (err)
1797 return err;
1798 devlink_rate->tx_share = rate;
1799 }
1800
1801 if (attrs[DEVLINK_ATTR_RATE_TX_MAX]) {
1802 rate = nla_get_u64(attrs[DEVLINK_ATTR_RATE_TX_MAX]);
a8ecb93e
DL		 1803 if (devlink_rate_is_leaf(devlink_rate))
1804 err = ops->rate_leaf_tx_max_set(devlink_rate, devlink_rate->priv,
1805 rate, info->extack);
1806 else if (devlink_rate_is_node(devlink_rate))
1807 err = ops->rate_node_tx_max_set(devlink_rate, devlink_rate->priv,
1808 rate, info->extack);
1897db2e
DL		 1809 if (err)
1810 return err;
1811 devlink_rate->tx_max = rate;
1812 }
1813
d7555984
DL		 1814 nla_parent = attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME];
1815 if (nla_parent) {
1816 err = devlink_nl_rate_parent_node_set(devlink_rate, info,
1817 nla_parent);
1818 if (err)
1819 return err;
1820 }
1821
1897db2e
DL		 1822 return 0;
1823}
1824
1825static bool devlink_rate_set_ops_supported(const struct devlink_ops *ops,
1826 struct genl_info *info,
1827 enum devlink_rate_type type)
1828{
1829 struct nlattr **attrs = info->attrs;
1830
1831 if (type == DEVLINK_RATE_TYPE_LEAF) {
1832 if (attrs[DEVLINK_ATTR_RATE_TX_SHARE] && !ops->rate_leaf_tx_share_set) {
1833 NL_SET_ERR_MSG_MOD(info->extack, "TX share set isn't supported for the leafs");
1834 return false;
1835 }
1836 if (attrs[DEVLINK_ATTR_RATE_TX_MAX] && !ops->rate_leaf_tx_max_set) {
1837 NL_SET_ERR_MSG_MOD(info->extack, "TX max set isn't supported for the leafs");
1838 return false;
1839 }
d7555984
DL		 1840 if (attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME] &&
1841 !ops->rate_leaf_parent_set) {
1842 NL_SET_ERR_MSG_MOD(info->extack, "Parent set isn't supported for the leafs");
1843 return false;
1844 }
a8ecb93e
DL		 1845 } else if (type == DEVLINK_RATE_TYPE_NODE) {
1846 if (attrs[DEVLINK_ATTR_RATE_TX_SHARE] && !ops->rate_node_tx_share_set) {
1847 NL_SET_ERR_MSG_MOD(info->extack, "TX share set isn't supported for the nodes");
1848 return false;
1849 }
1850 if (attrs[DEVLINK_ATTR_RATE_TX_MAX] && !ops->rate_node_tx_max_set) {
1851 NL_SET_ERR_MSG_MOD(info->extack, "TX max set isn't supported for the nodes");
1852 return false;
1853 }
d7555984
DL		 1854 if (attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME] &&
1855 !ops->rate_node_parent_set) {
1856 NL_SET_ERR_MSG_MOD(info->extack, "Parent set isn't supported for the nodes");
1857 return false;
1858 }
1897db2e 1859 } else {
711d1dee 1860 WARN(1, "Unknown type of rate object");
1897db2e
DL		 1861 return false;
1862 }
1863
1864 return true;
1865}
1866
1867static int devlink_nl_cmd_rate_set_doit(struct sk_buff *skb,
1868 struct genl_info *info)
1869{
1870 struct devlink_rate *devlink_rate = info->user_ptr[1];
1871 struct devlink *devlink = devlink_rate->devlink;
1872 const struct devlink_ops *ops = devlink->ops;
1873 int err;
1874
1875 if (!ops || !devlink_rate_set_ops_supported(ops, info, devlink_rate->type))
1876 return -EOPNOTSUPP;
1877
1878 err = devlink_nl_rate_set(devlink_rate, ops, info);
1879
1880 if (!err)
1881 devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_NEW);
1882 return err;
1883}
1884
a8ecb93e
DL		 1885static int devlink_nl_cmd_rate_new_doit(struct sk_buff *skb,
1886 struct genl_info *info)
1887{
1888 struct devlink *devlink = info->user_ptr[0];
1889 struct devlink_rate *rate_node;
1890 const struct devlink_ops *ops;
1891 int err;
1892
1893 ops = devlink->ops;
1894 if (!ops || !ops->rate_node_new || !ops->rate_node_del) {
1895 NL_SET_ERR_MSG_MOD(info->extack, "Rate nodes aren't supported");
1896 return -EOPNOTSUPP;
1897 }
1898
1899 if (!devlink_rate_set_ops_supported(ops, info, DEVLINK_RATE_TYPE_NODE))
1900 return -EOPNOTSUPP;
1901
1902 rate_node = devlink_rate_node_get_from_attrs(devlink, info->attrs);
1903 if (!IS_ERR(rate_node))
1904 return -EEXIST;
1905 else if (rate_node == ERR_PTR(-EINVAL))
1906 return -EINVAL;
1907
1908 rate_node = kzalloc(sizeof(*rate_node), GFP_KERNEL);
1909 if (!rate_node)
1910 return -ENOMEM;
1911
1912 rate_node->devlink = devlink;
1913 rate_node->type = DEVLINK_RATE_TYPE_NODE;
1914 rate_node->name = nla_strdup(info->attrs[DEVLINK_ATTR_RATE_NODE_NAME], GFP_KERNEL);
1915 if (!rate_node->name) {
1916 err = -ENOMEM;
1917 goto err_strdup;
1918 }
1919
1920 err = ops->rate_node_new(rate_node, &rate_node->priv, info->extack);
1921 if (err)
1922 goto err_node_new;
1923
1924 err = devlink_nl_rate_set(rate_node, ops, info);
1925 if (err)
1926 goto err_rate_set;
1927
d7555984 1928 refcount_set(&rate_node->refcnt, 1);
a8ecb93e
DL		 1929 list_add(&rate_node->list, &devlink->rate_list);
1930 devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_NEW);
1931 return 0;
1932
1933err_rate_set:
1934 ops->rate_node_del(rate_node, rate_node->priv, info->extack);
1935err_node_new:
1936 kfree(rate_node->name);
1937err_strdup:
1938 kfree(rate_node);
1939 return err;
1940}
1941
1942static int devlink_nl_cmd_rate_del_doit(struct sk_buff *skb,
1943 struct genl_info *info)
1944{
1945 struct devlink_rate *rate_node = info->user_ptr[1];
1946 struct devlink *devlink = rate_node->devlink;
1947 const struct devlink_ops *ops = devlink->ops;
1948 int err;
1949
d7555984
DL		 1950 if (refcount_read(&rate_node->refcnt) > 1) {
1951 NL_SET_ERR_MSG_MOD(info->extack, "Node has children. Cannot delete node.");
1952 return -EBUSY;
1953 }
1954
a8ecb93e
DL		 1955 devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_DEL);
1956 err = ops->rate_node_del(rate_node, rate_node->priv, info->extack);
d7555984
DL		 1957 if (rate_node->parent)
1958 refcount_dec(&rate_node->parent->refcnt);
a8ecb93e
DL		 1959 list_del(&rate_node->list);
1960 kfree(rate_node->name);
1961 kfree(rate_node);
1962 return err;
1963}
1964
bf797471
JP		 1965static int devlink_nl_sb_fill(struct sk_buff *msg, struct devlink *devlink,
1966 struct devlink_sb *devlink_sb,
1967 enum devlink_command cmd, u32 portid,
1968 u32 seq, int flags)
1969{
1970 void *hdr;
1971
1972 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1973 if (!hdr)
1974 return -EMSGSIZE;
1975
1976 if (devlink_nl_put_handle(msg, devlink))
1977 goto nla_put_failure;
1978 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
1979 goto nla_put_failure;
1980 if (nla_put_u32(msg, DEVLINK_ATTR_SB_SIZE, devlink_sb->size))
1981 goto nla_put_failure;
1982 if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_POOL_COUNT,
1983 devlink_sb->ingress_pools_count))
1984 goto nla_put_failure;
1985 if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_POOL_COUNT,
1986 devlink_sb->egress_pools_count))
1987 goto nla_put_failure;
1988 if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_TC_COUNT,
1989 devlink_sb->ingress_tc_count))
1990 goto nla_put_failure;
1991 if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_TC_COUNT,
1992 devlink_sb->egress_tc_count))
1993 goto nla_put_failure;
1994
1995 genlmsg_end(msg, hdr);
1996 return 0;
1997
1998nla_put_failure:
1999 genlmsg_cancel(msg, hdr);
2000 return -EMSGSIZE;
2001}
2002
2003static int devlink_nl_cmd_sb_get_doit(struct sk_buff *skb,
2004 struct genl_info *info)
2005{
2006 struct devlink *devlink = info->user_ptr[0];
637989b5 2007 struct devlink_sb *devlink_sb;
bf797471
JP		 2008 struct sk_buff *msg;
2009 int err;
2010
637989b5
PP		 2011 devlink_sb = devlink_sb_get_from_info(devlink, info);
2012 if (IS_ERR(devlink_sb))
2013 return PTR_ERR(devlink_sb);
2014
bf797471
JP		 2015 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2016 if (!msg)
2017 return -ENOMEM;
2018
2019 err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
2020 DEVLINK_CMD_SB_NEW,
2021 info->snd_portid, info->snd_seq, 0);
2022 if (err) {
2023 nlmsg_free(msg);
2024 return err;
2025 }
2026
2027 return genlmsg_reply(msg, info);
2028}
2029
2030static int devlink_nl_cmd_sb_get_dumpit(struct sk_buff *msg,
2031 struct netlink_callback *cb)
2032{
2033 struct devlink *devlink;
2034 struct devlink_sb *devlink_sb;
2035 int start = cb->args[0];
11a861d7 2036 unsigned long index;
bf797471
JP		 2037 int idx = 0;
2038 int err;
2039
2040 mutex_lock(&devlink_mutex);
11a861d7 2041 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
437ebfd9 2042 if (!devlink_try_get(devlink))
bf797471 2043 continue;
437ebfd9
LR		 2044
2045 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
2046 goto retry;
2047
2406e7e5 2048 mutex_lock(&devlink->lock);
bf797471
JP		 2049 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
2050 if (idx < start) {
2051 idx++;
2052 continue;
2053 }
2054 err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
2055 DEVLINK_CMD_SB_NEW,
2056 NETLINK_CB(cb->skb).portid,
2057 cb->nlh->nlmsg_seq,
2058 NLM_F_MULTI);
2406e7e5
AS		 2059 if (err) {
2060 mutex_unlock(&devlink->lock);
437ebfd9 2061 devlink_put(devlink);
bf797471 2062 goto out;
2406e7e5 2063 }
bf797471
JP		 2064 idx++;
2065 }
2406e7e5 2066 mutex_unlock(&devlink->lock);
437ebfd9
LR		 2067retry:
2068 devlink_put(devlink);
bf797471
JP		 2069 }
2070out:
2071 mutex_unlock(&devlink_mutex);
2072
2073 cb->args[0] = idx;
2074 return msg->len;
2075}
2076
2077static int devlink_nl_sb_pool_fill(struct sk_buff *msg, struct devlink *devlink,
2078 struct devlink_sb *devlink_sb,
2079 u16 pool_index, enum devlink_command cmd,
2080 u32 portid, u32 seq, int flags)
2081{
2082 struct devlink_sb_pool_info pool_info;
2083 void *hdr;
2084 int err;
2085
2086 err = devlink->ops->sb_pool_get(devlink, devlink_sb->index,
2087 pool_index, &pool_info);
2088 if (err)
2089 return err;
2090
2091 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
2092 if (!hdr)
2093 return -EMSGSIZE;
2094
2095 if (devlink_nl_put_handle(msg, devlink))
2096 goto nla_put_failure;
2097 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
2098 goto nla_put_failure;
2099 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
2100 goto nla_put_failure;
2101 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_info.pool_type))
2102 goto nla_put_failure;
2103 if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_SIZE, pool_info.size))
2104 goto nla_put_failure;
2105 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE,
2106 pool_info.threshold_type))
2107 goto nla_put_failure;
bff5731d
JK		 2108 if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_CELL_SIZE,
2109 pool_info.cell_size))
2110 goto nla_put_failure;
bf797471
JP		 2111
2112 genlmsg_end(msg, hdr);
2113 return 0;
2114
2115nla_put_failure:
2116 genlmsg_cancel(msg, hdr);
2117 return -EMSGSIZE;
2118}
2119
2120static int devlink_nl_cmd_sb_pool_get_doit(struct sk_buff *skb,
2121 struct genl_info *info)
2122{
2123 struct devlink *devlink = info->user_ptr[0];
637989b5 2124 struct devlink_sb *devlink_sb;
bf797471
JP		 2125 struct sk_buff *msg;
2126 u16 pool_index;
2127 int err;
2128
637989b5
PP		 2129 devlink_sb = devlink_sb_get_from_info(devlink, info);
2130 if (IS_ERR(devlink_sb))
2131 return PTR_ERR(devlink_sb);
2132
bf797471
JP		 2133 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
2134 &pool_index);
2135 if (err)
2136 return err;
2137
be6fe1d8 2138 if (!devlink->ops->sb_pool_get)
bf797471
JP		 2139 return -EOPNOTSUPP;
2140
2141 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2142 if (!msg)
2143 return -ENOMEM;
2144
2145 err = devlink_nl_sb_pool_fill(msg, devlink, devlink_sb, pool_index,
2146 DEVLINK_CMD_SB_POOL_NEW,
2147 info->snd_portid, info->snd_seq, 0);
2148 if (err) {
2149 nlmsg_free(msg);
2150 return err;
2151 }
2152
2153 return genlmsg_reply(msg, info);
2154}
2155
2156static int __sb_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
2157 struct devlink *devlink,
2158 struct devlink_sb *devlink_sb,
2159 u32 portid, u32 seq)
2160{
2161 u16 pool_count = devlink_sb_pool_count(devlink_sb);
2162 u16 pool_index;
2163 int err;
2164
2165 for (pool_index = 0; pool_index < pool_count; pool_index++) {
2166 if (*p_idx < start) {
2167 (*p_idx)++;
2168 continue;
2169 }
2170 err = devlink_nl_sb_pool_fill(msg, devlink,
2171 devlink_sb,
2172 pool_index,
2173 DEVLINK_CMD_SB_POOL_NEW,
2174 portid, seq, NLM_F_MULTI);
2175 if (err)
2176 return err;
2177 (*p_idx)++;
2178 }
2179 return 0;
2180}
2181
2182static int devlink_nl_cmd_sb_pool_get_dumpit(struct sk_buff *msg,
2183 struct netlink_callback *cb)
2184{
2185 struct devlink *devlink;
2186 struct devlink_sb *devlink_sb;
2187 int start = cb->args[0];
11a861d7 2188 unsigned long index;
bf797471 2189 int idx = 0;
c62c2cfb 2190 int err = 0;
bf797471
JP		 2191
2192 mutex_lock(&devlink_mutex);
11a861d7 2193 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
437ebfd9
LR		 2194 if (!devlink_try_get(devlink))
2195 continue;
2196
bf797471 2197 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
be6fe1d8 2198 !devlink->ops->sb_pool_get)
437ebfd9
LR		 2199 goto retry;
2200
2406e7e5 2201 mutex_lock(&devlink->lock);
bf797471
JP		 2202 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
2203 err = __sb_pool_get_dumpit(msg, start, &idx, devlink,
2204 devlink_sb,
2205 NETLINK_CB(cb->skb).portid,
2206 cb->nlh->nlmsg_seq);
82274d07
JK		 2207 if (err == -EOPNOTSUPP) {
2208 err = 0;
2209 } else if (err) {
2406e7e5 2210 mutex_unlock(&devlink->lock);
437ebfd9 2211 devlink_put(devlink);
bf797471 2212 goto out;
2406e7e5 2213 }
bf797471 2214 }
2406e7e5 2215 mutex_unlock(&devlink->lock);
437ebfd9
LR		 2216retry:
2217 devlink_put(devlink);
bf797471
JP		 2218 }
2219out:
2220 mutex_unlock(&devlink_mutex);
2221
c62c2cfb
JP		 2222 if (err != -EMSGSIZE)
2223 return err;
2224
bf797471
JP		 2225 cb->args[0] = idx;
2226 return msg->len;
2227}
2228
2229static int devlink_sb_pool_set(struct devlink *devlink, unsigned int sb_index,
2230 u16 pool_index, u32 size,
f2ad1a52
IS		 2231 enum devlink_sb_threshold_type threshold_type,
2232 struct netlink_ext_ack *extack)
bf797471
JP		 2233
2234{
2235 const struct devlink_ops *ops = devlink->ops;
2236
be6fe1d8 2237 if (ops->sb_pool_set)
bf797471 2238 return ops->sb_pool_set(devlink, sb_index, pool_index,
f2ad1a52 2239 size, threshold_type, extack);
bf797471
JP		 2240 return -EOPNOTSUPP;
2241}
2242
2243static int devlink_nl_cmd_sb_pool_set_doit(struct sk_buff *skb,
2244 struct genl_info *info)
2245{
2246 struct devlink *devlink = info->user_ptr[0];
bf797471 2247 enum devlink_sb_threshold_type threshold_type;
637989b5 2248 struct devlink_sb *devlink_sb;
bf797471
JP		 2249 u16 pool_index;
2250 u32 size;
2251 int err;
2252
637989b5
PP		 2253 devlink_sb = devlink_sb_get_from_info(devlink, info);
2254 if (IS_ERR(devlink_sb))
2255 return PTR_ERR(devlink_sb);
2256
bf797471
JP		 2257 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
2258 &pool_index);
2259 if (err)
2260 return err;
2261
2262 err = devlink_sb_th_type_get_from_info(info, &threshold_type);
2263 if (err)
2264 return err;
2265
2266 if (!info->attrs[DEVLINK_ATTR_SB_POOL_SIZE])
2267 return -EINVAL;
2268
2269 size = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_POOL_SIZE]);
2270 return devlink_sb_pool_set(devlink, devlink_sb->index,
f2ad1a52
IS		 2271 pool_index, size, threshold_type,
2272 info->extack);
bf797471
JP		 2273}
2274
2275static int devlink_nl_sb_port_pool_fill(struct sk_buff *msg,
2276 struct devlink *devlink,
2277 struct devlink_port *devlink_port,
2278 struct devlink_sb *devlink_sb,
2279 u16 pool_index,
2280 enum devlink_command cmd,
2281 u32 portid, u32 seq, int flags)
2282{
df38dafd 2283 const struct devlink_ops *ops = devlink->ops;
bf797471
JP		 2284 u32 threshold;
2285 void *hdr;
2286 int err;
2287
df38dafd
JP		 2288 err = ops->sb_port_pool_get(devlink_port, devlink_sb->index,
2289 pool_index, &threshold);
bf797471
JP		 2290 if (err)
2291 return err;
2292
2293 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
2294 if (!hdr)
2295 return -EMSGSIZE;
2296
2297 if (devlink_nl_put_handle(msg, devlink))
2298 goto nla_put_failure;
2299 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
2300 goto nla_put_failure;
2301 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
2302 goto nla_put_failure;
2303 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
2304 goto nla_put_failure;
2305 if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
2306 goto nla_put_failure;
2307
df38dafd
JP		 2308 if (ops->sb_occ_port_pool_get) {
2309 u32 cur;
2310 u32 max;
2311
2312 err = ops->sb_occ_port_pool_get(devlink_port, devlink_sb->index,
2313 pool_index, &cur, &max);
2314 if (err && err != -EOPNOTSUPP)
849920c7 2315 goto sb_occ_get_failure;
df38dafd
JP		 2316 if (!err) {
2317 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
2318 goto nla_put_failure;
2319 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
2320 goto nla_put_failure;
2321 }
2322 }
2323
bf797471
JP		 2324 genlmsg_end(msg, hdr);
2325 return 0;
2326
2327nla_put_failure:
849920c7
WH		 2328 err = -EMSGSIZE;
2329sb_occ_get_failure:
bf797471 2330 genlmsg_cancel(msg, hdr);
849920c7 2331 return err;
bf797471
JP		 2332}
2333
2334static int devlink_nl_cmd_sb_port_pool_get_doit(struct sk_buff *skb,
2335 struct genl_info *info)
2336{
637989b5 2337 struct devlink_port *devlink_port = info->user_ptr[1];
bf797471 2338 struct devlink *devlink = devlink_port->devlink;
637989b5 2339 struct devlink_sb *devlink_sb;
bf797471
JP		 2340 struct sk_buff *msg;
2341 u16 pool_index;
2342 int err;
2343
637989b5
PP		 2344 devlink_sb = devlink_sb_get_from_info(devlink, info);
2345 if (IS_ERR(devlink_sb))
2346 return PTR_ERR(devlink_sb);
2347
bf797471
JP		 2348 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
2349 &pool_index);
2350 if (err)
2351 return err;
2352
be6fe1d8 2353 if (!devlink->ops->sb_port_pool_get)
bf797471
JP		 2354 return -EOPNOTSUPP;
2355
2356 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2357 if (!msg)
2358 return -ENOMEM;
2359
2360 err = devlink_nl_sb_port_pool_fill(msg, devlink, devlink_port,
2361 devlink_sb, pool_index,
2362 DEVLINK_CMD_SB_PORT_POOL_NEW,
2363 info->snd_portid, info->snd_seq, 0);
2364 if (err) {
2365 nlmsg_free(msg);
2366 return err;
2367 }
2368
2369 return genlmsg_reply(msg, info);
2370}
2371
2372static int __sb_port_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
2373 struct devlink *devlink,
2374 struct devlink_sb *devlink_sb,
2375 u32 portid, u32 seq)
2376{
2377 struct devlink_port *devlink_port;
2378 u16 pool_count = devlink_sb_pool_count(devlink_sb);
2379 u16 pool_index;
2380 int err;
2381
2382 list_for_each_entry(devlink_port, &devlink->port_list, list) {
2383 for (pool_index = 0; pool_index < pool_count; pool_index++) {
2384 if (*p_idx < start) {
2385 (*p_idx)++;
2386 continue;
2387 }
2388 err = devlink_nl_sb_port_pool_fill(msg, devlink,
2389 devlink_port,
2390 devlink_sb,
2391 pool_index,
2392 DEVLINK_CMD_SB_PORT_POOL_NEW,
2393 portid, seq,
2394 NLM_F_MULTI);
2395 if (err)
2396 return err;
2397 (*p_idx)++;
2398 }
2399 }
2400 return 0;
2401}
2402
2403static int devlink_nl_cmd_sb_port_pool_get_dumpit(struct sk_buff *msg,
2404 struct netlink_callback *cb)
2405{
2406 struct devlink *devlink;
2407 struct devlink_sb *devlink_sb;
2408 int start = cb->args[0];
11a861d7 2409 unsigned long index;
bf797471 2410 int idx = 0;
c62c2cfb 2411 int err = 0;
bf797471
JP		 2412
2413 mutex_lock(&devlink_mutex);
11a861d7 2414 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
437ebfd9
LR		 2415 if (!devlink_try_get(devlink))
2416 continue;
2417
bf797471 2418 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
be6fe1d8 2419 !devlink->ops->sb_port_pool_get)
437ebfd9
LR		 2420 goto retry;
2421
2406e7e5 2422 mutex_lock(&devlink->lock);
bf797471
JP		 2423 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
2424 err = __sb_port_pool_get_dumpit(msg, start, &idx,
2425 devlink, devlink_sb,
2426 NETLINK_CB(cb->skb).portid,
2427 cb->nlh->nlmsg_seq);
82274d07
JK		 2428 if (err == -EOPNOTSUPP) {
2429 err = 0;
2430 } else if (err) {
2406e7e5 2431 mutex_unlock(&devlink->lock);
437ebfd9 2432 devlink_put(devlink);
bf797471 2433 goto out;
2406e7e5 2434 }
bf797471 2435 }
2406e7e5 2436 mutex_unlock(&devlink->lock);
437ebfd9
LR		 2437retry:
2438 devlink_put(devlink);
bf797471
JP		 2439 }
2440out:
bf797471
JP		 2441 mutex_unlock(&devlink_mutex);
2442
c62c2cfb
JP		 2443 if (err != -EMSGSIZE)
2444 return err;
2445
bf797471
JP		 2446 cb->args[0] = idx;
2447 return msg->len;
2448}
2449
2450static int devlink_sb_port_pool_set(struct devlink_port *devlink_port,
2451 unsigned int sb_index, u16 pool_index,
f2ad1a52
IS		 2452 u32 threshold,
2453 struct netlink_ext_ack *extack)
bf797471
JP		 2454
2455{
2456 const struct devlink_ops *ops = devlink_port->devlink->ops;
2457
be6fe1d8 2458 if (ops->sb_port_pool_set)
bf797471 2459 return ops->sb_port_pool_set(devlink_port, sb_index,
f2ad1a52 2460 pool_index, threshold, extack);
bf797471
JP		 2461 return -EOPNOTSUPP;
2462}
2463
2464static int devlink_nl_cmd_sb_port_pool_set_doit(struct sk_buff *skb,
2465 struct genl_info *info)
2466{
637989b5
PP		 2467 struct devlink_port *devlink_port = info->user_ptr[1];
2468 struct devlink *devlink = info->user_ptr[0];
2469 struct devlink_sb *devlink_sb;
bf797471
JP		 2470 u16 pool_index;
2471 u32 threshold;
2472 int err;
2473
637989b5
PP		 2474 devlink_sb = devlink_sb_get_from_info(devlink, info);
2475 if (IS_ERR(devlink_sb))
2476 return PTR_ERR(devlink_sb);
2477
bf797471
JP		 2478 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
2479 &pool_index);
2480 if (err)
2481 return err;
2482
2483 if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD])
2484 return -EINVAL;
2485
2486 threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
2487 return devlink_sb_port_pool_set(devlink_port, devlink_sb->index,
f2ad1a52 2488 pool_index, threshold, info->extack);
bf797471
JP		 2489}
2490
2491static int
2492devlink_nl_sb_tc_pool_bind_fill(struct sk_buff *msg, struct devlink *devlink,
2493 struct devlink_port *devlink_port,
2494 struct devlink_sb *devlink_sb, u16 tc_index,
2495 enum devlink_sb_pool_type pool_type,
2496 enum devlink_command cmd,
2497 u32 portid, u32 seq, int flags)
2498{
df38dafd 2499 const struct devlink_ops *ops = devlink->ops;
bf797471
JP		 2500 u16 pool_index;
2501 u32 threshold;
2502 void *hdr;
2503 int err;
2504
df38dafd
JP		 2505 err = ops->sb_tc_pool_bind_get(devlink_port, devlink_sb->index,
2506 tc_index, pool_type,
2507 &pool_index, &threshold);
bf797471
JP		 2508 if (err)
2509 return err;
2510
2511 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
2512 if (!hdr)
2513 return -EMSGSIZE;
2514
2515 if (devlink_nl_put_handle(msg, devlink))
2516 goto nla_put_failure;
2517 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
2518 goto nla_put_failure;
2519 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
2520 goto nla_put_failure;
2521 if (nla_put_u16(msg, DEVLINK_ATTR_SB_TC_INDEX, tc_index))
2522 goto nla_put_failure;
2523 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_type))
2524 goto nla_put_failure;
2525 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
2526 goto nla_put_failure;
2527 if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
2528 goto nla_put_failure;
2529
df38dafd
JP		 2530 if (ops->sb_occ_tc_port_bind_get) {
2531 u32 cur;
2532 u32 max;
2533
2534 err = ops->sb_occ_tc_port_bind_get(devlink_port,
2535 devlink_sb->index,
2536 tc_index, pool_type,
2537 &cur, &max);
2538 if (err && err != -EOPNOTSUPP)
2539 return err;
2540 if (!err) {
2541 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
2542 goto nla_put_failure;
2543 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
2544 goto nla_put_failure;
2545 }
2546 }
2547
bf797471
JP		 2548 genlmsg_end(msg, hdr);
2549 return 0;
2550
2551nla_put_failure:
2552 genlmsg_cancel(msg, hdr);
2553 return -EMSGSIZE;
2554}
2555
2556static int devlink_nl_cmd_sb_tc_pool_bind_get_doit(struct sk_buff *skb,
2557 struct genl_info *info)
2558{
637989b5 2559 struct devlink_port *devlink_port = info->user_ptr[1];
bf797471 2560 struct devlink *devlink = devlink_port->devlink;
637989b5 2561 struct devlink_sb *devlink_sb;
bf797471
JP		 2562 struct sk_buff *msg;
2563 enum devlink_sb_pool_type pool_type;
2564 u16 tc_index;
2565 int err;
2566
637989b5
PP		 2567 devlink_sb = devlink_sb_get_from_info(devlink, info);
2568 if (IS_ERR(devlink_sb))
2569 return PTR_ERR(devlink_sb);
2570
bf797471
JP		 2571 err = devlink_sb_pool_type_get_from_info(info, &pool_type);
2572 if (err)
2573 return err;
2574
2575 err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
2576 pool_type, &tc_index);
2577 if (err)
2578 return err;
2579
be6fe1d8 2580 if (!devlink->ops->sb_tc_pool_bind_get)
bf797471
JP		 2581 return -EOPNOTSUPP;
2582
2583 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2584 if (!msg)
2585 return -ENOMEM;
2586
2587 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink, devlink_port,
2588 devlink_sb, tc_index, pool_type,
2589 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
2590 info->snd_portid,
2591 info->snd_seq, 0);
2592 if (err) {
2593 nlmsg_free(msg);
2594 return err;
2595 }
2596
2597 return genlmsg_reply(msg, info);
2598}
2599
2600static int __sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
2601 int start, int *p_idx,
2602 struct devlink *devlink,
2603 struct devlink_sb *devlink_sb,
2604 u32 portid, u32 seq)
2605{
2606 struct devlink_port *devlink_port;
2607 u16 tc_index;
2608 int err;
2609
2610 list_for_each_entry(devlink_port, &devlink->port_list, list) {
2611 for (tc_index = 0;
2612 tc_index < devlink_sb->ingress_tc_count; tc_index++) {
2613 if (*p_idx < start) {
2614 (*p_idx)++;
2615 continue;
2616 }
2617 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
2618 devlink_port,
2619 devlink_sb,
2620 tc_index,
2621 DEVLINK_SB_POOL_TYPE_INGRESS,
2622 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
2623 portid, seq,
2624 NLM_F_MULTI);
2625 if (err)
2626 return err;
2627 (*p_idx)++;
2628 }
2629 for (tc_index = 0;
2630 tc_index < devlink_sb->egress_tc_count; tc_index++) {
2631 if (*p_idx < start) {
2632 (*p_idx)++;
2633 continue;
2634 }
2635 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
2636 devlink_port,
2637 devlink_sb,
2638 tc_index,
2639 DEVLINK_SB_POOL_TYPE_EGRESS,
2640 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
2641 portid, seq,
2642 NLM_F_MULTI);
2643 if (err)
2644 return err;
2645 (*p_idx)++;
2646 }
2647 }
2648 return 0;
2649}
2650
2651static int
2652devlink_nl_cmd_sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
2653 struct netlink_callback *cb)
2654{
2655 struct devlink *devlink;
2656 struct devlink_sb *devlink_sb;
2657 int start = cb->args[0];
11a861d7 2658 unsigned long index;
bf797471 2659 int idx = 0;
c62c2cfb 2660 int err = 0;
bf797471
JP		 2661
2662 mutex_lock(&devlink_mutex);
11a861d7 2663 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
437ebfd9
LR		 2664 if (!devlink_try_get(devlink))
2665 continue;
2666
bf797471 2667 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
be6fe1d8 2668 !devlink->ops->sb_tc_pool_bind_get)
437ebfd9 2669 goto retry;
2406e7e5
AS		 2670
2671 mutex_lock(&devlink->lock);
bf797471
JP		 2672 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
2673 err = __sb_tc_pool_bind_get_dumpit(msg, start, &idx,
2674 devlink,
2675 devlink_sb,
2676 NETLINK_CB(cb->skb).portid,
2677 cb->nlh->nlmsg_seq);
82274d07
JK		 2678 if (err == -EOPNOTSUPP) {
2679 err = 0;
2680 } else if (err) {
2406e7e5 2681 mutex_unlock(&devlink->lock);
437ebfd9 2682 devlink_put(devlink);
bf797471 2683 goto out;
2406e7e5 2684 }
bf797471 2685 }
2406e7e5 2686 mutex_unlock(&devlink->lock);
437ebfd9
LR		 2687retry:
2688 devlink_put(devlink);
bf797471
JP		 2689 }
2690out:
bf797471
JP		 2691 mutex_unlock(&devlink_mutex);
2692
c62c2cfb
JP		 2693 if (err != -EMSGSIZE)
2694 return err;
2695
bf797471
JP		 2696 cb->args[0] = idx;
2697 return msg->len;
2698}
2699
2700static int devlink_sb_tc_pool_bind_set(struct devlink_port *devlink_port,
2701 unsigned int sb_index, u16 tc_index,
2702 enum devlink_sb_pool_type pool_type,
f2ad1a52
IS		 2703 u16 pool_index, u32 threshold,
2704 struct netlink_ext_ack *extack)
bf797471
JP		 2705
2706{
2707 const struct devlink_ops *ops = devlink_port->devlink->ops;
2708
be6fe1d8 2709 if (ops->sb_tc_pool_bind_set)
bf797471
JP		 2710 return ops->sb_tc_pool_bind_set(devlink_port, sb_index,
2711 tc_index, pool_type,
f2ad1a52 2712 pool_index, threshold, extack);
bf797471
JP		 2713 return -EOPNOTSUPP;
2714}
2715
2716static int devlink_nl_cmd_sb_tc_pool_bind_set_doit(struct sk_buff *skb,
2717 struct genl_info *info)
2718{
637989b5
PP		 2719 struct devlink_port *devlink_port = info->user_ptr[1];
2720 struct devlink *devlink = info->user_ptr[0];
bf797471 2721 enum devlink_sb_pool_type pool_type;
637989b5 2722 struct devlink_sb *devlink_sb;
bf797471
JP		 2723 u16 tc_index;
2724 u16 pool_index;
2725 u32 threshold;
2726 int err;
2727
637989b5
PP		 2728 devlink_sb = devlink_sb_get_from_info(devlink, info);
2729 if (IS_ERR(devlink_sb))
2730 return PTR_ERR(devlink_sb);
2731
bf797471
JP		 2732 err = devlink_sb_pool_type_get_from_info(info, &pool_type);
2733 if (err)
2734 return err;
2735
2736 err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
2737 pool_type, &tc_index);
2738 if (err)
2739 return err;
2740
2741 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
2742 &pool_index);
2743 if (err)
2744 return err;
2745
2746 if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD])
2747 return -EINVAL;
2748
2749 threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
2750 return devlink_sb_tc_pool_bind_set(devlink_port, devlink_sb->index,
2751 tc_index, pool_type,
f2ad1a52 2752 pool_index, threshold, info->extack);
bf797471
JP		 2753}
2754
df38dafd
JP		 2755static int devlink_nl_cmd_sb_occ_snapshot_doit(struct sk_buff *skb,
2756 struct genl_info *info)
2757{
2758 struct devlink *devlink = info->user_ptr[0];
df38dafd 2759 const struct devlink_ops *ops = devlink->ops;
637989b5
PP		 2760 struct devlink_sb *devlink_sb;
2761
2762 devlink_sb = devlink_sb_get_from_info(devlink, info);
2763 if (IS_ERR(devlink_sb))
2764 return PTR_ERR(devlink_sb);
df38dafd 2765
be6fe1d8 2766 if (ops->sb_occ_snapshot)
df38dafd
JP		 2767 return ops->sb_occ_snapshot(devlink, devlink_sb->index);
2768 return -EOPNOTSUPP;
2769}
2770
2771static int devlink_nl_cmd_sb_occ_max_clear_doit(struct sk_buff *skb,
2772 struct genl_info *info)
2773{
2774 struct devlink *devlink = info->user_ptr[0];
df38dafd 2775 const struct devlink_ops *ops = devlink->ops;
637989b5
PP		 2776 struct devlink_sb *devlink_sb;
2777
2778 devlink_sb = devlink_sb_get_from_info(devlink, info);
2779 if (IS_ERR(devlink_sb))
2780 return PTR_ERR(devlink_sb);
df38dafd 2781
be6fe1d8 2782 if (ops->sb_occ_max_clear)
df38dafd
JP		 2783 return ops->sb_occ_max_clear(devlink, devlink_sb->index);
2784 return -EOPNOTSUPP;
2785}
2786
21e3d2dd
JP		 2787static int devlink_nl_eswitch_fill(struct sk_buff *msg, struct devlink *devlink,
2788 enum devlink_command cmd, u32 portid,
2789 u32 seq, int flags)
08f4b591 2790{
59bfde01 2791 const struct devlink_ops *ops = devlink->ops;
98fdbea5
LR		 2792 enum devlink_eswitch_encap_mode encap_mode;
2793 u8 inline_mode;
08f4b591 2794 void *hdr;
59bfde01
RD		 2795 int err = 0;
2796 u16 mode;
08f4b591
OG		 2797
2798 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
2799 if (!hdr)
2800 return -EMSGSIZE;
2801
59bfde01
RD		 2802 err = devlink_nl_put_handle(msg, devlink);
2803 if (err)
1a6aa36b 2804 goto nla_put_failure;
08f4b591 2805
4456f61c
JP		 2806 if (ops->eswitch_mode_get) {
2807 err = ops->eswitch_mode_get(devlink, &mode);
2808 if (err)
2809 goto nla_put_failure;
2810 err = nla_put_u16(msg, DEVLINK_ATTR_ESWITCH_MODE, mode);
2811 if (err)
2812 goto nla_put_failure;
2813 }
59bfde01
RD		 2814
2815 if (ops->eswitch_inline_mode_get) {
2816 err = ops->eswitch_inline_mode_get(devlink, &inline_mode);
2817 if (err)
1a6aa36b 2818 goto nla_put_failure;
59bfde01
RD		 2819 err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_INLINE_MODE,
2820 inline_mode);
2821 if (err)
1a6aa36b 2822 goto nla_put_failure;
59bfde01 2823 }
08f4b591 2824
f43e9b06
RD		 2825 if (ops->eswitch_encap_mode_get) {
2826 err = ops->eswitch_encap_mode_get(devlink, &encap_mode);
2827 if (err)
2828 goto nla_put_failure;
2829 err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_ENCAP_MODE, encap_mode);
2830 if (err)
2831 goto nla_put_failure;
2832 }
2833
08f4b591
OG		 2834 genlmsg_end(msg, hdr);
2835 return 0;
2836
1a6aa36b 2837nla_put_failure:
08f4b591 2838 genlmsg_cancel(msg, hdr);
59bfde01 2839 return err;
08f4b591
OG		 2840}
2841
adf200f3
JP		 2842static int devlink_nl_cmd_eswitch_get_doit(struct sk_buff *skb,
2843 struct genl_info *info)
08f4b591
OG		 2844{
2845 struct devlink *devlink = info->user_ptr[0];
08f4b591 2846 struct sk_buff *msg;
08f4b591
OG		 2847 int err;
2848
08f4b591
OG		 2849 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2850 if (!msg)
2851 return -ENOMEM;
2852
21e3d2dd
JP		 2853 err = devlink_nl_eswitch_fill(msg, devlink, DEVLINK_CMD_ESWITCH_GET,
2854 info->snd_portid, info->snd_seq, 0);
08f4b591
OG		 2855
2856 if (err) {
2857 nlmsg_free(msg);
2858 return err;
2859 }
2860
2861 return genlmsg_reply(msg, info);
2862}
2863
a8ecb93e
DL		 2864static int devlink_rate_nodes_check(struct devlink *devlink, u16 mode,
2865 struct netlink_ext_ack *extack)
2866{
2867 struct devlink_rate *devlink_rate;
a8ecb93e 2868
a3e5e579
DL		 2869 /* Take the lock to sync with devlink_rate_nodes_destroy() */
2870 mutex_lock(&devlink->lock);
a8ecb93e
DL		 2871 list_for_each_entry(devlink_rate, &devlink->rate_list, list)
2872 if (devlink_rate_is_node(devlink_rate)) {
a3e5e579 2873 mutex_unlock(&devlink->lock);
a8ecb93e
DL		 2874 NL_SET_ERR_MSG_MOD(extack, "Rate node(s) exists.");
2875 return -EBUSY;
2876 }
a3e5e579 2877 mutex_unlock(&devlink->lock);
a8ecb93e
DL		 2878 return 0;
2879}
2880
adf200f3
JP		 2881static int devlink_nl_cmd_eswitch_set_doit(struct sk_buff *skb,
2882 struct genl_info *info)
08f4b591
OG		 2883{
2884 struct devlink *devlink = info->user_ptr[0];
2885 const struct devlink_ops *ops = devlink->ops;
98fdbea5
LR		 2886 enum devlink_eswitch_encap_mode encap_mode;
2887 u8 inline_mode;
59bfde01 2888 int err = 0;
f43e9b06 2889 u16 mode;
08f4b591 2890
59bfde01
RD		 2891 if (info->attrs[DEVLINK_ATTR_ESWITCH_MODE]) {
2892 if (!ops->eswitch_mode_set)
2893 return -EOPNOTSUPP;
2894 mode = nla_get_u16(info->attrs[DEVLINK_ATTR_ESWITCH_MODE]);
a8ecb93e
DL		 2895 err = devlink_rate_nodes_check(devlink, mode, info->extack);
2896 if (err)
2897 return err;
db7ff19e 2898 err = ops->eswitch_mode_set(devlink, mode, info->extack);
59bfde01
RD		 2899 if (err)
2900 return err;
2901 }
08f4b591 2902
59bfde01
RD		 2903 if (info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]) {
2904 if (!ops->eswitch_inline_mode_set)
2905 return -EOPNOTSUPP;
2906 inline_mode = nla_get_u8(
2907 info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]);
db7ff19e
EB		 2908 err = ops->eswitch_inline_mode_set(devlink, inline_mode,
2909 info->extack);
59bfde01
RD		 2910 if (err)
2911 return err;
2912 }
f43e9b06
RD		 2913
2914 if (info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]) {
2915 if (!ops->eswitch_encap_mode_set)
2916 return -EOPNOTSUPP;
2917 encap_mode = nla_get_u8(info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]);
db7ff19e
EB		 2918 err = ops->eswitch_encap_mode_set(devlink, encap_mode,
2919 info->extack);
f43e9b06
RD		 2920 if (err)
2921 return err;
2922 }
2923
1555d204
AS		 2924 return 0;
2925}
2926
2927int devlink_dpipe_match_put(struct sk_buff *skb,
2928 struct devlink_dpipe_match *match)
2929{
2930 struct devlink_dpipe_header *header = match->header;
2931 struct devlink_dpipe_field *field = &header->fields[match->field_id];
2932 struct nlattr *match_attr;
2933
ae0be8de 2934 match_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_MATCH);
1555d204
AS		 2935 if (!match_attr)
2936 return -EMSGSIZE;
2937
2938 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_MATCH_TYPE, match->type) ||
2939 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, match->header_index) ||
2940 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
2941 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
2942 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
2943 goto nla_put_failure;
2944
2945 nla_nest_end(skb, match_attr);
2946 return 0;
2947
2948nla_put_failure:
2949 nla_nest_cancel(skb, match_attr);
2950 return -EMSGSIZE;
2951}
2952EXPORT_SYMBOL_GPL(devlink_dpipe_match_put);
2953
2954static int devlink_dpipe_matches_put(struct devlink_dpipe_table *table,
2955 struct sk_buff *skb)
2956{
2957 struct nlattr *matches_attr;
2958
ae0be8de
MK		 2959 matches_attr = nla_nest_start_noflag(skb,
2960 DEVLINK_ATTR_DPIPE_TABLE_MATCHES);
1555d204
AS		 2961 if (!matches_attr)
2962 return -EMSGSIZE;
2963
2964 if (table->table_ops->matches_dump(table->priv, skb))
2965 goto nla_put_failure;
2966
2967 nla_nest_end(skb, matches_attr);
2968 return 0;
2969
2970nla_put_failure:
2971 nla_nest_cancel(skb, matches_attr);
2972 return -EMSGSIZE;
2973}
2974
2975int devlink_dpipe_action_put(struct sk_buff *skb,
2976 struct devlink_dpipe_action *action)
2977{
2978 struct devlink_dpipe_header *header = action->header;
2979 struct devlink_dpipe_field *field = &header->fields[action->field_id];
2980 struct nlattr *action_attr;
2981
ae0be8de 2982 action_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ACTION);
1555d204
AS		 2983 if (!action_attr)
2984 return -EMSGSIZE;
2985
2986 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_ACTION_TYPE, action->type) ||
2987 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, action->header_index) ||
2988 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
2989 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
2990 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
2991 goto nla_put_failure;
2992
2993 nla_nest_end(skb, action_attr);
2994 return 0;
2995
2996nla_put_failure:
2997 nla_nest_cancel(skb, action_attr);
2998 return -EMSGSIZE;
2999}
3000EXPORT_SYMBOL_GPL(devlink_dpipe_action_put);
3001
3002static int devlink_dpipe_actions_put(struct devlink_dpipe_table *table,
3003 struct sk_buff *skb)
3004{
3005 struct nlattr *actions_attr;
3006
ae0be8de
MK		 3007 actions_attr = nla_nest_start_noflag(skb,
3008 DEVLINK_ATTR_DPIPE_TABLE_ACTIONS);
1555d204
AS		 3009 if (!actions_attr)
3010 return -EMSGSIZE;
3011
3012 if (table->table_ops->actions_dump(table->priv, skb))
3013 goto nla_put_failure;
3014
3015 nla_nest_end(skb, actions_attr);
3016 return 0;
3017
3018nla_put_failure:
3019 nla_nest_cancel(skb, actions_attr);
3020 return -EMSGSIZE;
3021}
3022
3023static int devlink_dpipe_table_put(struct sk_buff *skb,
3024 struct devlink_dpipe_table *table)
3025{
3026 struct nlattr *table_attr;
ffd3cdcc 3027 u64 table_size;
1555d204 3028
ffd3cdcc 3029 table_size = table->table_ops->size_get(table->priv);
ae0be8de 3030 table_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLE);
1555d204
AS		 3031 if (!table_attr)
3032 return -EMSGSIZE;
3033
3034 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_TABLE_NAME, table->name) ||
ffd3cdcc 3035 nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_SIZE, table_size,
1555d204
AS		 3036 DEVLINK_ATTR_PAD))
3037 goto nla_put_failure;
3038 if (nla_put_u8(skb, DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED,
3039 table->counters_enabled))
3040 goto nla_put_failure;
3041
56dc7cd0 3042 if (table->resource_valid) {
3d18e4f1
AS		 3043 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_ID,
3044 table->resource_id, DEVLINK_ATTR_PAD) ||
3045 nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_UNITS,
3046 table->resource_units, DEVLINK_ATTR_PAD))
3047 goto nla_put_failure;
56dc7cd0 3048 }
1555d204
AS		 3049 if (devlink_dpipe_matches_put(table, skb))
3050 goto nla_put_failure;
3051
3052 if (devlink_dpipe_actions_put(table, skb))
3053 goto nla_put_failure;
3054
3055 nla_nest_end(skb, table_attr);
3056 return 0;
3057
3058nla_put_failure:
3059 nla_nest_cancel(skb, table_attr);
3060 return -EMSGSIZE;
3061}
3062
3063static int devlink_dpipe_send_and_alloc_skb(struct sk_buff **pskb,
3064 struct genl_info *info)
3065{
3066 int err;
3067
3068 if (*pskb) {
3069 err = genlmsg_reply(*pskb, info);
3070 if (err)
3071 return err;
3072 }
3073 *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
3074 if (!*pskb)
3075 return -ENOMEM;
3076 return 0;
3077}
3078
3079static int devlink_dpipe_tables_fill(struct genl_info *info,
3080 enum devlink_command cmd, int flags,
3081 struct list_head *dpipe_tables,
3082 const char *table_name)
3083{
3084 struct devlink *devlink = info->user_ptr[0];
3085 struct devlink_dpipe_table *table;
3086 struct nlattr *tables_attr;
3087 struct sk_buff *skb = NULL;
3088 struct nlmsghdr *nlh;
3089 bool incomplete;
3090 void *hdr;
3091 int i;
3092 int err;
3093
3094 table = list_first_entry(dpipe_tables,
3095 struct devlink_dpipe_table, list);
3096start_again:
3097 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
3098 if (err)
3099 return err;
3100
3101 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
3102 &devlink_nl_family, NLM_F_MULTI, cmd);
6044bd4a
HY		 3103 if (!hdr) {
3104 nlmsg_free(skb);
1555d204 3105 return -EMSGSIZE;
6044bd4a 3106 }
1555d204
AS		 3107
3108 if (devlink_nl_put_handle(skb, devlink))
3109 goto nla_put_failure;
ae0be8de 3110 tables_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLES);
1555d204
AS		 3111 if (!tables_attr)
3112 goto nla_put_failure;
3113
3114 i = 0;
3115 incomplete = false;
3116 list_for_each_entry_from(table, dpipe_tables, list) {
3117 if (!table_name) {
3118 err = devlink_dpipe_table_put(skb, table);
3119 if (err) {
3120 if (!i)
3121 goto err_table_put;
3122 incomplete = true;
3123 break;
3124 }
3125 } else {
3126 if (!strcmp(table->name, table_name)) {
3127 err = devlink_dpipe_table_put(skb, table);
3128 if (err)
3129 break;
3130 }
3131 }
3132 i++;
3133 }
3134
3135 nla_nest_end(skb, tables_attr);
3136 genlmsg_end(skb, hdr);
3137 if (incomplete)
3138 goto start_again;
3139
3140send_done:
3141 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
3142 NLMSG_DONE, 0, flags | NLM_F_MULTI);
3143 if (!nlh) {
3144 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
3145 if (err)
7fe4d6dc 3146 return err;
1555d204
AS		 3147 goto send_done;
3148 }
3149
3150 return genlmsg_reply(skb, info);
3151
3152nla_put_failure:
3153 err = -EMSGSIZE;
3154err_table_put:
1555d204
AS		 3155 nlmsg_free(skb);
3156 return err;
3157}
3158
3159static int devlink_nl_cmd_dpipe_table_get(struct sk_buff *skb,
3160 struct genl_info *info)
3161{
3162 struct devlink *devlink = info->user_ptr[0];
3163 const char *table_name = NULL;
3164
3165 if (info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
3166 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
3167
3168 return devlink_dpipe_tables_fill(info, DEVLINK_CMD_DPIPE_TABLE_GET, 0,
3169 &devlink->dpipe_table_list,
3170 table_name);
3171}
3172
3173static int devlink_dpipe_value_put(struct sk_buff *skb,
3174 struct devlink_dpipe_value *value)
3175{
3176 if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE,
3177 value->value_size, value->value))
3178 return -EMSGSIZE;
3179 if (value->mask)
3180 if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE_MASK,
3181 value->value_size, value->mask))
3182 return -EMSGSIZE;
3183 if (value->mapping_valid)
3184 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_VALUE_MAPPING,
3185 value->mapping_value))
3186 return -EMSGSIZE;
3187 return 0;
3188}
3189
3190static int devlink_dpipe_action_value_put(struct sk_buff *skb,
3191 struct devlink_dpipe_value *value)
3192{
3193 if (!value->action)
3194 return -EINVAL;
3195 if (devlink_dpipe_action_put(skb, value->action))
3196 return -EMSGSIZE;
3197 if (devlink_dpipe_value_put(skb, value))
3198 return -EMSGSIZE;
3199 return 0;
3200}
3201
3202static int devlink_dpipe_action_values_put(struct sk_buff *skb,
3203 struct devlink_dpipe_value *values,
3204 unsigned int values_count)
3205{
3206 struct nlattr *action_attr;
3207 int i;
3208 int err;
3209
3210 for (i = 0; i < values_count; i++) {
ae0be8de
MK		 3211 action_attr = nla_nest_start_noflag(skb,
3212 DEVLINK_ATTR_DPIPE_ACTION_VALUE);
1555d204
AS		 3213 if (!action_attr)
3214 return -EMSGSIZE;
3215 err = devlink_dpipe_action_value_put(skb, &values[i]);
3216 if (err)
3217 goto err_action_value_put;
3218 nla_nest_end(skb, action_attr);
3219 }
3220 return 0;
3221
3222err_action_value_put:
3223 nla_nest_cancel(skb, action_attr);
3224 return err;
3225}
3226
3227static int devlink_dpipe_match_value_put(struct sk_buff *skb,
3228 struct devlink_dpipe_value *value)
3229{
3230 if (!value->match)
3231 return -EINVAL;
3232 if (devlink_dpipe_match_put(skb, value->match))
3233 return -EMSGSIZE;
3234 if (devlink_dpipe_value_put(skb, value))
3235 return -EMSGSIZE;
3236 return 0;
3237}
3238
3239static int devlink_dpipe_match_values_put(struct sk_buff *skb,
3240 struct devlink_dpipe_value *values,
3241 unsigned int values_count)
3242{
3243 struct nlattr *match_attr;
3244 int i;
3245 int err;
3246
3247 for (i = 0; i < values_count; i++) {
ae0be8de
MK		 3248 match_attr = nla_nest_start_noflag(skb,
3249 DEVLINK_ATTR_DPIPE_MATCH_VALUE);
1555d204
AS		 3250 if (!match_attr)
3251 return -EMSGSIZE;
3252 err = devlink_dpipe_match_value_put(skb, &values[i]);
3253 if (err)
3254 goto err_match_value_put;
3255 nla_nest_end(skb, match_attr);
3256 }
3257 return 0;
3258
3259err_match_value_put:
3260 nla_nest_cancel(skb, match_attr);
3261 return err;
3262}
3263
3264static int devlink_dpipe_entry_put(struct sk_buff *skb,
3265 struct devlink_dpipe_entry *entry)
3266{
3267 struct nlattr *entry_attr, *matches_attr, *actions_attr;
3268 int err;
3269
ae0be8de 3270 entry_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ENTRY);
1555d204
AS		 3271 if (!entry_attr)
3272 return -EMSGSIZE;
3273
3274 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_INDEX, entry->index,
3275 DEVLINK_ATTR_PAD))
3276 goto nla_put_failure;
3277 if (entry->counter_valid)
3278 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_COUNTER,
3279 entry->counter, DEVLINK_ATTR_PAD))
3280 goto nla_put_failure;
3281
ae0be8de
MK		 3282 matches_attr = nla_nest_start_noflag(skb,
3283 DEVLINK_ATTR_DPIPE_ENTRY_MATCH_VALUES);
1555d204
AS		 3284 if (!matches_attr)
3285 goto nla_put_failure;
3286
3287 err = devlink_dpipe_match_values_put(skb, entry->match_values,
3288 entry->match_values_count);
3289 if (err) {
3290 nla_nest_cancel(skb, matches_attr);
3291 goto err_match_values_put;
3292 }
3293 nla_nest_end(skb, matches_attr);
3294
ae0be8de
MK		 3295 actions_attr = nla_nest_start_noflag(skb,
3296 DEVLINK_ATTR_DPIPE_ENTRY_ACTION_VALUES);
1555d204
AS		 3297 if (!actions_attr)
3298 goto nla_put_failure;
3299
3300 err = devlink_dpipe_action_values_put(skb, entry->action_values,
3301 entry->action_values_count);
3302 if (err) {
3303 nla_nest_cancel(skb, actions_attr);
3304 goto err_action_values_put;
3305 }
3306 nla_nest_end(skb, actions_attr);
59bfde01 3307
1555d204 3308 nla_nest_end(skb, entry_attr);
59bfde01 3309 return 0;
1555d204
AS		 3310
3311nla_put_failure:
3312 err = -EMSGSIZE;
3313err_match_values_put:
3314err_action_values_put:
3315 nla_nest_cancel(skb, entry_attr);
3316 return err;
3317}
3318
3319static struct devlink_dpipe_table *
3320devlink_dpipe_table_find(struct list_head *dpipe_tables,
2eb51c75 3321 const char *table_name, struct devlink *devlink)
1555d204
AS		 3322{
3323 struct devlink_dpipe_table *table;
2eb51c75
MB		 3324 list_for_each_entry_rcu(table, dpipe_tables, list,
3325 lockdep_is_held(&devlink->lock)) {
1555d204
AS		 3326 if (!strcmp(table->name, table_name))
3327 return table;
3328 }
3329 return NULL;
3330}
3331
3332int devlink_dpipe_entry_ctx_prepare(struct devlink_dpipe_dump_ctx *dump_ctx)
3333{
3334 struct devlink *devlink;
3335 int err;
3336
3337 err = devlink_dpipe_send_and_alloc_skb(&dump_ctx->skb,
3338 dump_ctx->info);
3339 if (err)
3340 return err;
3341
3342 dump_ctx->hdr = genlmsg_put(dump_ctx->skb,
3343 dump_ctx->info->snd_portid,
3344 dump_ctx->info->snd_seq,
3345 &devlink_nl_family, NLM_F_MULTI,
3346 dump_ctx->cmd);
3347 if (!dump_ctx->hdr)
3348 goto nla_put_failure;
3349
3350 devlink = dump_ctx->info->user_ptr[0];
3351 if (devlink_nl_put_handle(dump_ctx->skb, devlink))
3352 goto nla_put_failure;
ae0be8de
MK		 3353 dump_ctx->nest = nla_nest_start_noflag(dump_ctx->skb,
3354 DEVLINK_ATTR_DPIPE_ENTRIES);
1555d204
AS		 3355 if (!dump_ctx->nest)
3356 goto nla_put_failure;
3357 return 0;
3358
3359nla_put_failure:
1555d204
AS		 3360 nlmsg_free(dump_ctx->skb);
3361 return -EMSGSIZE;
3362}
3363EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_prepare);
3364
3365int devlink_dpipe_entry_ctx_append(struct devlink_dpipe_dump_ctx *dump_ctx,
3366 struct devlink_dpipe_entry *entry)
3367{
3368 return devlink_dpipe_entry_put(dump_ctx->skb, entry);
3369}
3370EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_append);
3371
3372int devlink_dpipe_entry_ctx_close(struct devlink_dpipe_dump_ctx *dump_ctx)
3373{
3374 nla_nest_end(dump_ctx->skb, dump_ctx->nest);
3375 genlmsg_end(dump_ctx->skb, dump_ctx->hdr);
3376 return 0;
3377}
3378EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_close);
3379
35807324
AS		 3380void devlink_dpipe_entry_clear(struct devlink_dpipe_entry *entry)
3381
3382{
3383 unsigned int value_count, value_index;
3384 struct devlink_dpipe_value *value;
3385
3386 value = entry->action_values;
3387 value_count = entry->action_values_count;
3388 for (value_index = 0; value_index < value_count; value_index++) {
3389 kfree(value[value_index].value);
3390 kfree(value[value_index].mask);
3391 }
3392
3393 value = entry->match_values;
3394 value_count = entry->match_values_count;
3395 for (value_index = 0; value_index < value_count; value_index++) {
3396 kfree(value[value_index].value);
3397 kfree(value[value_index].mask);
3398 }
3399}
c52ef04d 3400EXPORT_SYMBOL_GPL(devlink_dpipe_entry_clear);
35807324 3401
1555d204
AS		 3402static int devlink_dpipe_entries_fill(struct genl_info *info,
3403 enum devlink_command cmd, int flags,
3404 struct devlink_dpipe_table *table)
3405{
3406 struct devlink_dpipe_dump_ctx dump_ctx;
3407 struct nlmsghdr *nlh;
3408 int err;
3409
3410 dump_ctx.skb = NULL;
3411 dump_ctx.cmd = cmd;
3412 dump_ctx.info = info;
3413
3414 err = table->table_ops->entries_dump(table->priv,
3415 table->counters_enabled,
3416 &dump_ctx);
3417 if (err)
7fe4d6dc 3418 return err;
1555d204
AS		 3419
3420send_done:
3421 nlh = nlmsg_put(dump_ctx.skb, info->snd_portid, info->snd_seq,
3422 NLMSG_DONE, 0, flags | NLM_F_MULTI);
3423 if (!nlh) {
3424 err = devlink_dpipe_send_and_alloc_skb(&dump_ctx.skb, info);
3425 if (err)
7fe4d6dc 3426 return err;
1555d204
AS		 3427 goto send_done;
3428 }
3429 return genlmsg_reply(dump_ctx.skb, info);
1555d204
AS		 3430}
3431
3432static int devlink_nl_cmd_dpipe_entries_get(struct sk_buff *skb,
3433 struct genl_info *info)
3434{
3435 struct devlink *devlink = info->user_ptr[0];
3436 struct devlink_dpipe_table *table;
3437 const char *table_name;
3438
3439 if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
3440 return -EINVAL;
3441
3442 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
3443 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2eb51c75 3444 table_name, devlink);
1555d204
AS		 3445 if (!table)
3446 return -EINVAL;
3447
3448 if (!table->table_ops->entries_dump)
3449 return -EINVAL;
3450
3451 return devlink_dpipe_entries_fill(info, DEVLINK_CMD_DPIPE_ENTRIES_GET,
3452 0, table);
3453}
3454
3455static int devlink_dpipe_fields_put(struct sk_buff *skb,
3456 const struct devlink_dpipe_header *header)
3457{
3458 struct devlink_dpipe_field *field;
3459 struct nlattr *field_attr;
3460 int i;
3461
3462 for (i = 0; i < header->fields_count; i++) {
3463 field = &header->fields[i];
ae0be8de
MK		 3464 field_attr = nla_nest_start_noflag(skb,
3465 DEVLINK_ATTR_DPIPE_FIELD);
1555d204
AS		 3466 if (!field_attr)
3467 return -EMSGSIZE;
3468 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_FIELD_NAME, field->name) ||
3469 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
3470 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_BITWIDTH, field->bitwidth) ||
3471 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_MAPPING_TYPE, field->mapping_type))
3472 goto nla_put_failure;
3473 nla_nest_end(skb, field_attr);
3474 }
3475 return 0;
3476
3477nla_put_failure:
3478 nla_nest_cancel(skb, field_attr);
3479 return -EMSGSIZE;
3480}
3481
3482static int devlink_dpipe_header_put(struct sk_buff *skb,
3483 struct devlink_dpipe_header *header)
3484{
3485 struct nlattr *fields_attr, *header_attr;
3486 int err;
3487
ae0be8de 3488 header_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADER);
cb6bf9cf 3489 if (!header_attr)
1555d204
AS		 3490 return -EMSGSIZE;
3491
3492 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_HEADER_NAME, header->name) ||
3493 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
3494 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
3495 goto nla_put_failure;
3496
ae0be8de
MK		 3497 fields_attr = nla_nest_start_noflag(skb,
3498 DEVLINK_ATTR_DPIPE_HEADER_FIELDS);
1555d204
AS		 3499 if (!fields_attr)
3500 goto nla_put_failure;
3501
3502 err = devlink_dpipe_fields_put(skb, header);
3503 if (err) {
3504 nla_nest_cancel(skb, fields_attr);
3505 goto nla_put_failure;
3506 }
3507 nla_nest_end(skb, fields_attr);
3508 nla_nest_end(skb, header_attr);
3509 return 0;
3510
3511nla_put_failure:
3512 err = -EMSGSIZE;
3513 nla_nest_cancel(skb, header_attr);
3514 return err;
3515}
3516
3517static int devlink_dpipe_headers_fill(struct genl_info *info,
3518 enum devlink_command cmd, int flags,
3519 struct devlink_dpipe_headers *
3520 dpipe_headers)
3521{
3522 struct devlink *devlink = info->user_ptr[0];
3523 struct nlattr *headers_attr;
3524 struct sk_buff *skb = NULL;
3525 struct nlmsghdr *nlh;
3526 void *hdr;
3527 int i, j;
3528 int err;
3529
3530 i = 0;
3531start_again:
3532 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
3533 if (err)
3534 return err;
3535
3536 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
3537 &devlink_nl_family, NLM_F_MULTI, cmd);
6044bd4a
HY		 3538 if (!hdr) {
3539 nlmsg_free(skb);
1555d204 3540 return -EMSGSIZE;
6044bd4a 3541 }
1555d204
AS		 3542
3543 if (devlink_nl_put_handle(skb, devlink))
3544 goto nla_put_failure;
ae0be8de 3545 headers_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADERS);
1555d204
AS		 3546 if (!headers_attr)
3547 goto nla_put_failure;
3548
3549 j = 0;
3550 for (; i < dpipe_headers->headers_count; i++) {
3551 err = devlink_dpipe_header_put(skb, dpipe_headers->headers[i]);
3552 if (err) {
3553 if (!j)
3554 goto err_table_put;
3555 break;
3556 }
3557 j++;
3558 }
3559 nla_nest_end(skb, headers_attr);
3560 genlmsg_end(skb, hdr);
3561 if (i != dpipe_headers->headers_count)
3562 goto start_again;
3563
3564send_done:
3565 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
3566 NLMSG_DONE, 0, flags | NLM_F_MULTI);
3567 if (!nlh) {
3568 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
3569 if (err)
7fe4d6dc 3570 return err;
1555d204
AS		 3571 goto send_done;
3572 }
3573 return genlmsg_reply(skb, info);
3574
3575nla_put_failure:
3576 err = -EMSGSIZE;
3577err_table_put:
1555d204
AS		 3578 nlmsg_free(skb);
3579 return err;
3580}
3581
3582static int devlink_nl_cmd_dpipe_headers_get(struct sk_buff *skb,
3583 struct genl_info *info)
3584{
3585 struct devlink *devlink = info->user_ptr[0];
3586
3587 if (!devlink->dpipe_headers)
3588 return -EOPNOTSUPP;
3589 return devlink_dpipe_headers_fill(info, DEVLINK_CMD_DPIPE_HEADERS_GET,
3590 0, devlink->dpipe_headers);
3591}
3592
3593static int devlink_dpipe_table_counters_set(struct devlink *devlink,
3594 const char *table_name,
3595 bool enable)
3596{
3597 struct devlink_dpipe_table *table;
3598
3599 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2eb51c75 3600 table_name, devlink);
1555d204
AS		 3601 if (!table)
3602 return -EINVAL;
3603
3604 if (table->counter_control_extern)
3605 return -EOPNOTSUPP;
3606
3607 if (!(table->counters_enabled ^ enable))
3608 return 0;
3609
3610 table->counters_enabled = enable;
3611 if (table->table_ops->counters_set_update)
3612 table->table_ops->counters_set_update(table->priv, enable);
3613 return 0;
3614}
3615
3616static int devlink_nl_cmd_dpipe_table_counters_set(struct sk_buff *skb,
3617 struct genl_info *info)
3618{
3619 struct devlink *devlink = info->user_ptr[0];
3620 const char *table_name;
3621 bool counters_enable;
3622
3623 if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME] ||
3624 !info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED])
3625 return -EINVAL;
3626
3627 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
3628 counters_enable = !!nla_get_u8(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED]);
3629
3630 return devlink_dpipe_table_counters_set(devlink, table_name,
3631 counters_enable);
08f4b591
OG		 3632}
3633
43dd7512 3634static struct devlink_resource *
d9f9b9a4
AS		 3635devlink_resource_find(struct devlink *devlink,
3636 struct devlink_resource *resource, u64 resource_id)
3637{
3638 struct list_head *resource_list;
3639
3640 if (resource)
3641 resource_list = &resource->resource_list;
3642 else
3643 resource_list = &devlink->resource_list;
3644
3645 list_for_each_entry(resource, resource_list, list) {
3646 struct devlink_resource *child_resource;
3647
3648 if (resource->id == resource_id)
3649 return resource;
3650
3651 child_resource = devlink_resource_find(devlink, resource,
3652 resource_id);
3653 if (child_resource)
3654 return child_resource;
3655 }
3656 return NULL;
3657}
3658
43dd7512
WY		 3659static void
3660devlink_resource_validate_children(struct devlink_resource *resource)
d9f9b9a4
AS		 3661{
3662 struct devlink_resource *child_resource;
3663 bool size_valid = true;
3664 u64 parts_size = 0;
3665
3666 if (list_empty(&resource->resource_list))
3667 goto out;
3668
3669 list_for_each_entry(child_resource, &resource->resource_list, list)
3670 parts_size += child_resource->size_new;
3671
b9d17175 3672 if (parts_size > resource->size_new)
d9f9b9a4
AS		 3673 size_valid = false;
3674out:
3675 resource->size_valid = size_valid;
3676}
3677
cc944ead
AS		 3678static int
3679devlink_resource_validate_size(struct devlink_resource *resource, u64 size,
3680 struct netlink_ext_ack *extack)
3681{
3682 u64 reminder;
3683 int err = 0;
3684
0f3e9c97 3685 if (size > resource->size_params.size_max) {
cc944ead
AS		 3686 NL_SET_ERR_MSG_MOD(extack, "Size larger than maximum");
3687 err = -EINVAL;
3688 }
3689
0f3e9c97 3690 if (size < resource->size_params.size_min) {
cc944ead
AS		 3691 NL_SET_ERR_MSG_MOD(extack, "Size smaller than minimum");
3692 err = -EINVAL;
3693 }
3694
0f3e9c97 3695 div64_u64_rem(size, resource->size_params.size_granularity, &reminder);
cc944ead
AS		 3696 if (reminder) {
3697 NL_SET_ERR_MSG_MOD(extack, "Wrong granularity");
3698 err = -EINVAL;
3699 }
3700
3701 return err;
3702}
3703
d9f9b9a4
AS		 3704static int devlink_nl_cmd_resource_set(struct sk_buff *skb,
3705 struct genl_info *info)
3706{
3707 struct devlink *devlink = info->user_ptr[0];
3708 struct devlink_resource *resource;
3709 u64 resource_id;
3710 u64 size;
3711 int err;
3712
3713 if (!info->attrs[DEVLINK_ATTR_RESOURCE_ID] ||
3714 !info->attrs[DEVLINK_ATTR_RESOURCE_SIZE])
3715 return -EINVAL;
3716 resource_id = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_ID]);
3717
3718 resource = devlink_resource_find(devlink, NULL, resource_id);
3719 if (!resource)
3720 return -EINVAL;
3721
d9f9b9a4 3722 size = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_SIZE]);
cc944ead 3723 err = devlink_resource_validate_size(resource, size, info->extack);
d9f9b9a4
AS		 3724 if (err)
3725 return err;
3726
3727 resource->size_new = size;
3728 devlink_resource_validate_children(resource);
3729 if (resource->parent)
3730 devlink_resource_validate_children(resource->parent);
3731 return 0;
3732}
3733
3d18e4f1 3734static int
d9f9b9a4
AS		 3735devlink_resource_size_params_put(struct devlink_resource *resource,
3736 struct sk_buff *skb)
3737{
3738 struct devlink_resource_size_params *size_params;
3739
77d27096 3740 size_params = &resource->size_params;
3d18e4f1
AS		 3741 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_GRAN,
3742 size_params->size_granularity, DEVLINK_ATTR_PAD) ||
3743 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MAX,
3744 size_params->size_max, DEVLINK_ATTR_PAD) ||
3745 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MIN,
3746 size_params->size_min, DEVLINK_ATTR_PAD) ||
3747 nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_UNIT, size_params->unit))
3748 return -EMSGSIZE;
3749 return 0;
d9f9b9a4
AS		 3750}
3751
fc56be47
JP		 3752static int devlink_resource_occ_put(struct devlink_resource *resource,
3753 struct sk_buff *skb)
3754{
3755 if (!resource->occ_get)
3756 return 0;
3757 return nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_OCC,
3758 resource->occ_get(resource->occ_get_priv),
3759 DEVLINK_ATTR_PAD);
3760}
3761
d9f9b9a4
AS		 3762static int devlink_resource_put(struct devlink *devlink, struct sk_buff *skb,
3763 struct devlink_resource *resource)
3764{
3765 struct devlink_resource *child_resource;
3766 struct nlattr *child_resource_attr;
3767 struct nlattr *resource_attr;
3768
ae0be8de 3769 resource_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_RESOURCE);
d9f9b9a4
AS		 3770 if (!resource_attr)
3771 return -EMSGSIZE;
3772
3773 if (nla_put_string(skb, DEVLINK_ATTR_RESOURCE_NAME, resource->name) ||
3774 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE, resource->size,
3775 DEVLINK_ATTR_PAD) ||
3776 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_ID, resource->id,
3777 DEVLINK_ATTR_PAD))
3778 goto nla_put_failure;
3779 if (resource->size != resource->size_new)
3780 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_NEW,
3781 resource->size_new, DEVLINK_ATTR_PAD);
fc56be47
JP		 3782 if (devlink_resource_occ_put(resource, skb))
3783 goto nla_put_failure;
3d18e4f1
AS		 3784 if (devlink_resource_size_params_put(resource, skb))
3785 goto nla_put_failure;
d9f9b9a4
AS		 3786 if (list_empty(&resource->resource_list))
3787 goto out;
3788
3789 if (nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_SIZE_VALID,
3790 resource->size_valid))
3791 goto nla_put_failure;
3792
ae0be8de
MK		 3793 child_resource_attr = nla_nest_start_noflag(skb,
3794 DEVLINK_ATTR_RESOURCE_LIST);
d9f9b9a4
AS		 3795 if (!child_resource_attr)
3796 goto nla_put_failure;
3797
3798 list_for_each_entry(child_resource, &resource->resource_list, list) {
3799 if (devlink_resource_put(devlink, skb, child_resource))
3800 goto resource_put_failure;
3801 }
3802
3803 nla_nest_end(skb, child_resource_attr);
3804out:
3805 nla_nest_end(skb, resource_attr);
3806 return 0;
3807
3808resource_put_failure:
3809 nla_nest_cancel(skb, child_resource_attr);
3810nla_put_failure:
3811 nla_nest_cancel(skb, resource_attr);
3812 return -EMSGSIZE;
3813}
3814
3815static int devlink_resource_fill(struct genl_info *info,
3816 enum devlink_command cmd, int flags)
3817{
3818 struct devlink *devlink = info->user_ptr[0];
3819 struct devlink_resource *resource;
3820 struct nlattr *resources_attr;
3821 struct sk_buff *skb = NULL;
3822 struct nlmsghdr *nlh;
3823 bool incomplete;
3824 void *hdr;
3825 int i;
3826 int err;
3827
3828 resource = list_first_entry(&devlink->resource_list,
3829 struct devlink_resource, list);
3830start_again:
3831 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
3832 if (err)
3833 return err;
3834
3835 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
3836 &devlink_nl_family, NLM_F_MULTI, cmd);
3837 if (!hdr) {
3838 nlmsg_free(skb);
3839 return -EMSGSIZE;
3840 }
3841
3842 if (devlink_nl_put_handle(skb, devlink))
3843 goto nla_put_failure;
3844
ae0be8de
MK		 3845 resources_attr = nla_nest_start_noflag(skb,
3846 DEVLINK_ATTR_RESOURCE_LIST);
d9f9b9a4
AS		 3847 if (!resources_attr)
3848 goto nla_put_failure;
3849
3850 incomplete = false;
3851 i = 0;
3852 list_for_each_entry_from(resource, &devlink->resource_list, list) {
3853 err = devlink_resource_put(devlink, skb, resource);
3854 if (err) {
3855 if (!i)
3856 goto err_resource_put;
3857 incomplete = true;
3858 break;
3859 }
3860 i++;
3861 }
3862 nla_nest_end(skb, resources_attr);
3863 genlmsg_end(skb, hdr);
3864 if (incomplete)
3865 goto start_again;
3866send_done:
3867 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
3868 NLMSG_DONE, 0, flags | NLM_F_MULTI);
3869 if (!nlh) {
3870 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
3871 if (err)
83fe9a96 3872 return err;
d9f9b9a4
AS		 3873 goto send_done;
3874 }
3875 return genlmsg_reply(skb, info);
3876
3877nla_put_failure:
3878 err = -EMSGSIZE;
3879err_resource_put:
d9f9b9a4
AS		 3880 nlmsg_free(skb);
3881 return err;
3882}
3883
3884static int devlink_nl_cmd_resource_dump(struct sk_buff *skb,
3885 struct genl_info *info)
3886{
3887 struct devlink *devlink = info->user_ptr[0];
3888
3889 if (list_empty(&devlink->resource_list))
3890 return -EOPNOTSUPP;
3891
3892 return devlink_resource_fill(info, DEVLINK_CMD_RESOURCE_DUMP, 0);
3893}
3894
2d8dc5bb
AS		 3895static int
3896devlink_resources_validate(struct devlink *devlink,
3897 struct devlink_resource *resource,
3898 struct genl_info *info)
3899{
3900 struct list_head *resource_list;
3901 int err = 0;
3902
3903 if (resource)
3904 resource_list = &resource->resource_list;
3905 else
3906 resource_list = &devlink->resource_list;
3907
3908 list_for_each_entry(resource, resource_list, list) {
3909 if (!resource->size_valid)
3910 return -EINVAL;
3911 err = devlink_resources_validate(devlink, resource, info);
3912 if (err)
3913 return err;
3914 }
3915 return err;
3916}
3917
070c63f2
JP		 3918static struct net *devlink_netns_get(struct sk_buff *skb,
3919 struct genl_info *info)
3920{
3921 struct nlattr *netns_pid_attr = info->attrs[DEVLINK_ATTR_NETNS_PID];
3922 struct nlattr *netns_fd_attr = info->attrs[DEVLINK_ATTR_NETNS_FD];
3923 struct nlattr *netns_id_attr = info->attrs[DEVLINK_ATTR_NETNS_ID];
3924 struct net *net;
3925
3926 if (!!netns_pid_attr + !!netns_fd_attr + !!netns_id_attr > 1) {
054eae82 3927 NL_SET_ERR_MSG_MOD(info->extack, "multiple netns identifying attributes specified");
070c63f2
JP		 3928 return ERR_PTR(-EINVAL);
3929 }
3930
3931 if (netns_pid_attr) {
3932 net = get_net_ns_by_pid(nla_get_u32(netns_pid_attr));
3933 } else if (netns_fd_attr) {
3934 net = get_net_ns_by_fd(nla_get_u32(netns_fd_attr));
3935 } else if (netns_id_attr) {
3936 net = get_net_ns_by_id(sock_net(skb->sk),
3937 nla_get_u32(netns_id_attr));
3938 if (!net)
3939 net = ERR_PTR(-EINVAL);
3940 } else {
3941 WARN_ON(1);
3942 net = ERR_PTR(-EINVAL);
3943 }
3944 if (IS_ERR(net)) {
054eae82 3945 NL_SET_ERR_MSG_MOD(info->extack, "Unknown network namespace");
070c63f2
JP		 3946 return ERR_PTR(-EINVAL);
3947 }
3948 if (!netlink_ns_capable(skb, net->user_ns, CAP_NET_ADMIN)) {
3949 put_net(net);
3950 return ERR_PTR(-EPERM);
3951 }
3952 return net;
3953}
3954
3955static void devlink_param_notify(struct devlink *devlink,
3956 unsigned int port_index,
3957 struct devlink_param_item *param_item,
3958 enum devlink_command cmd);
3959
05a7f4a8
LR		 3960static void devlink_ns_change_notify(struct devlink *devlink,
3961 struct net *dest_net, struct net *curr_net,
3962 bool new)
070c63f2
JP		 3963{
3964 struct devlink_param_item *param_item;
05a7f4a8 3965 enum devlink_command cmd;
070c63f2
JP		 3966
3967 /* Userspace needs to be notified about devlink objects
3968 * removed from original and entering new network namespace.
3969 * The rest of the devlink objects are re-created during
3970 * reload process so the notifications are generated separatelly.
3971 */
3972
05a7f4a8
LR		 3973 if (!dest_net || net_eq(dest_net, curr_net))
3974 return;
070c63f2 3975
05a7f4a8
LR		 3976 if (new)
3977 devlink_notify(devlink, DEVLINK_CMD_NEW);
070c63f2 3978
05a7f4a8 3979 cmd = new ? DEVLINK_CMD_PARAM_NEW : DEVLINK_CMD_PARAM_DEL;
070c63f2 3980 list_for_each_entry(param_item, &devlink->param_list, list)
05a7f4a8
LR		 3981 devlink_param_notify(devlink, 0, param_item, cmd);
3982
3983 if (!new)
3984 devlink_notify(devlink, DEVLINK_CMD_DEL);
070c63f2
JP		 3985}
3986
69d56e0e 3987static bool devlink_reload_supported(const struct devlink_ops *ops)
97691069 3988{
69d56e0e 3989 return ops->reload_down && ops->reload_up;
97691069
JP		 3990}
3991
2670ac26
JP		 3992static void devlink_reload_failed_set(struct devlink *devlink,
3993 bool reload_failed)
3994{
3995 if (devlink->reload_failed == reload_failed)
3996 return;
3997 devlink->reload_failed = reload_failed;
3998 devlink_notify(devlink, DEVLINK_CMD_NEW);
3999}
4000
4001bool devlink_is_reload_failed(const struct devlink *devlink)
4002{
4003 return devlink->reload_failed;
4004}
4005EXPORT_SYMBOL_GPL(devlink_is_reload_failed);
4006
a254c264
MS		 4007static void
4008__devlink_reload_stats_update(struct devlink *devlink, u32 *reload_stats,
4009 enum devlink_reload_limit limit, u32 actions_performed)
4010{
4011 unsigned long actions = actions_performed;
4012 int stat_idx;
4013 int action;
4014
4015 for_each_set_bit(action, &actions, __DEVLINK_RELOAD_ACTION_MAX) {
4016 stat_idx = limit * __DEVLINK_RELOAD_ACTION_MAX + action;
4017 reload_stats[stat_idx]++;
4018 }
4019 devlink_notify(devlink, DEVLINK_CMD_NEW);
4020}
4021
4022static void
4023devlink_reload_stats_update(struct devlink *devlink, enum devlink_reload_limit limit,
4024 u32 actions_performed)
4025{
4026 __devlink_reload_stats_update(devlink, devlink->stats.reload_stats, limit,
4027 actions_performed);
4028}
4029
77069ba2
MS		 4030/**
4031 * devlink_remote_reload_actions_performed - Update devlink on reload actions
4032 * performed which are not a direct result of devlink reload call.
4033 *
4034 * This should be called by a driver after performing reload actions in case it was not
4035 * a result of devlink reload call. For example fw_activate was performed as a result
4036 * of devlink reload triggered fw_activate on another host.
4037 * The motivation for this function is to keep data on reload actions performed on this
4038 * function whether it was done due to direct devlink reload call or not.
4039 *
4040 * @devlink: devlink
4041 * @limit: reload limit
4042 * @actions_performed: bitmask of actions performed
4043 */
4044void devlink_remote_reload_actions_performed(struct devlink *devlink,
4045 enum devlink_reload_limit limit,
4046 u32 actions_performed)
4047{
4048 if (WARN_ON(!actions_performed ||
4049 actions_performed & BIT(DEVLINK_RELOAD_ACTION_UNSPEC) ||
4050 actions_performed >= BIT(__DEVLINK_RELOAD_ACTION_MAX) ||
4051 limit > DEVLINK_RELOAD_LIMIT_MAX))
4052 return;
4053
4054 __devlink_reload_stats_update(devlink, devlink->stats.remote_reload_stats, limit,
4055 actions_performed);
4056}
4057EXPORT_SYMBOL_GPL(devlink_remote_reload_actions_performed);
4058
070c63f2 4059static int devlink_reload(struct devlink *devlink, struct net *dest_net,
dc64cc7c
MS		 4060 enum devlink_reload_action action, enum devlink_reload_limit limit,
4061 u32 *actions_performed, struct netlink_ext_ack *extack)
070c63f2 4062{
77069ba2 4063 u32 remote_reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE];
05a7f4a8 4064 struct net *curr_net;
070c63f2
JP		 4065 int err;
4066
77069ba2
MS		 4067 memcpy(remote_reload_stats, devlink->stats.remote_reload_stats,
4068 sizeof(remote_reload_stats));
05a7f4a8
LR		 4069
4070 curr_net = devlink_net(devlink);
4071 devlink_ns_change_notify(devlink, dest_net, curr_net, false);
dc64cc7c 4072 err = devlink->ops->reload_down(devlink, !!dest_net, action, limit, extack);
070c63f2
JP		 4073 if (err)
4074 return err;
4075
05a7f4a8 4076 if (dest_net && !net_eq(dest_net, curr_net))
26713455 4077 write_pnet(&devlink->_net, dest_net);
070c63f2 4078
dc64cc7c 4079 err = devlink->ops->reload_up(devlink, action, limit, actions_performed, extack);
070c63f2 4080 devlink_reload_failed_set(devlink, !!err);
ccdf0721
MS		 4081 if (err)
4082 return err;
4083
05a7f4a8 4084 devlink_ns_change_notify(devlink, dest_net, curr_net, true);
ccdf0721 4085 WARN_ON(!(*actions_performed & BIT(action)));
77069ba2
MS		 4086 /* Catch driver on updating the remote action within devlink reload */
4087 WARN_ON(memcmp(remote_reload_stats, devlink->stats.remote_reload_stats,
4088 sizeof(remote_reload_stats)));
a254c264 4089 devlink_reload_stats_update(devlink, limit, *actions_performed);
ccdf0721
MS		 4090 return 0;
4091}
4092
4093static int
4094devlink_nl_reload_actions_performed_snd(struct devlink *devlink, u32 actions_performed,
4095 enum devlink_command cmd, struct genl_info *info)
4096{
4097 struct sk_buff *msg;
4098 void *hdr;
4099
4100 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4101 if (!msg)
4102 return -ENOMEM;
4103
4104 hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq, &devlink_nl_family, 0, cmd);
4105 if (!hdr)
4106 goto free_msg;
4107
4108 if (devlink_nl_put_handle(msg, devlink))
4109 goto nla_put_failure;
4110
4111 if (nla_put_bitfield32(msg, DEVLINK_ATTR_RELOAD_ACTIONS_PERFORMED, actions_performed,
4112 actions_performed))
4113 goto nla_put_failure;
4114 genlmsg_end(msg, hdr);
4115
4116 return genlmsg_reply(msg, info);
4117
4118nla_put_failure:
4119 genlmsg_cancel(msg, hdr);
4120free_msg:
4121 nlmsg_free(msg);
4122 return -EMSGSIZE;
070c63f2
JP		 4123}
4124
2d8dc5bb
AS		 4125static int devlink_nl_cmd_reload(struct sk_buff *skb, struct genl_info *info)
4126{
4127 struct devlink *devlink = info->user_ptr[0];
ccdf0721 4128 enum devlink_reload_action action;
dc64cc7c 4129 enum devlink_reload_limit limit;
070c63f2 4130 struct net *dest_net = NULL;
ccdf0721 4131 u32 actions_performed;
2d8dc5bb
AS		 4132 int err;
4133
82465bec 4134 if (!(devlink->features & DEVLINK_F_RELOAD))
2d8dc5bb
AS		 4135 return -EOPNOTSUPP;
4136
4137 err = devlink_resources_validate(devlink, NULL, info);
4138 if (err) {
4139 NL_SET_ERR_MSG_MOD(info->extack, "resources size validation failed");
4140 return err;
4141 }
070c63f2 4142
ccdf0721
MS		 4143 if (info->attrs[DEVLINK_ATTR_RELOAD_ACTION])
4144 action = nla_get_u8(info->attrs[DEVLINK_ATTR_RELOAD_ACTION]);
4145 else
4146 action = DEVLINK_RELOAD_ACTION_DRIVER_REINIT;
4147
4148 if (!devlink_reload_action_is_supported(devlink, action)) {
4149 NL_SET_ERR_MSG_MOD(info->extack,
4150 "Requested reload action is not supported by the driver");
4151 return -EOPNOTSUPP;
4152 }
4153
dc64cc7c
MS		 4154 limit = DEVLINK_RELOAD_LIMIT_UNSPEC;
4155 if (info->attrs[DEVLINK_ATTR_RELOAD_LIMITS]) {
4156 struct nla_bitfield32 limits;
4157 u32 limits_selected;
4158
4159 limits = nla_get_bitfield32(info->attrs[DEVLINK_ATTR_RELOAD_LIMITS]);
4160 limits_selected = limits.value & limits.selector;
4161 if (!limits_selected) {
4162 NL_SET_ERR_MSG_MOD(info->extack, "Invalid limit selected");
4163 return -EINVAL;
4164 }
4165 for (limit = 0 ; limit <= DEVLINK_RELOAD_LIMIT_MAX ; limit++)
4166 if (limits_selected & BIT(limit))
4167 break;
4168 /* UAPI enables multiselection, but currently it is not used */
4169 if (limits_selected != BIT(limit)) {
4170 NL_SET_ERR_MSG_MOD(info->extack,
4171 "Multiselection of limit is not supported");
4172 return -EOPNOTSUPP;
4173 }
4174 if (!devlink_reload_limit_is_supported(devlink, limit)) {
4175 NL_SET_ERR_MSG_MOD(info->extack,
4176 "Requested limit is not supported by the driver");
4177 return -EOPNOTSUPP;
4178 }
4179 if (devlink_reload_combination_is_invalid(action, limit)) {
4180 NL_SET_ERR_MSG_MOD(info->extack,
4181 "Requested limit is invalid for this action");
4182 return -EINVAL;
4183 }
4184 }
4dbb0dad
ED		 4185 if (info->attrs[DEVLINK_ATTR_NETNS_PID] ||
4186 info->attrs[DEVLINK_ATTR_NETNS_FD] ||
4187 info->attrs[DEVLINK_ATTR_NETNS_ID]) {
4188 dest_net = devlink_netns_get(skb, info);
4189 if (IS_ERR(dest_net))
4190 return PTR_ERR(dest_net);
4191 }
4192
dc64cc7c 4193 err = devlink_reload(devlink, dest_net, action, limit, &actions_performed, info->extack);
070c63f2
JP		 4194
4195 if (dest_net)
4196 put_net(dest_net);
4197
ccdf0721
MS		 4198 if (err)
4199 return err;
4200 /* For backward compatibility generate reply only if attributes used by user */
dc64cc7c 4201 if (!info->attrs[DEVLINK_ATTR_RELOAD_ACTION] && !info->attrs[DEVLINK_ATTR_RELOAD_LIMITS])
ccdf0721
MS		 4202 return 0;
4203
4204 return devlink_nl_reload_actions_performed_snd(devlink, actions_performed,
4205 DEVLINK_CMD_RELOAD, info);
2d8dc5bb
AS		 4206}
4207
191ed202
JP		 4208static int devlink_nl_flash_update_fill(struct sk_buff *msg,
4209 struct devlink *devlink,
4210 enum devlink_command cmd,
6700acc5 4211 struct devlink_flash_notify *params)
191ed202
JP		 4212{
4213 void *hdr;
4214
4215 hdr = genlmsg_put(msg, 0, 0, &devlink_nl_family, 0, cmd);
4216 if (!hdr)
4217 return -EMSGSIZE;
4218
4219 if (devlink_nl_put_handle(msg, devlink))
4220 goto nla_put_failure;
4221
4222 if (cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS)
4223 goto out;
4224
6700acc5 4225 if (params->status_msg &&
191ed202 4226 nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_MSG,
6700acc5 4227 params->status_msg))
191ed202 4228 goto nla_put_failure;
6700acc5 4229 if (params->component &&
191ed202 4230 nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_COMPONENT,
6700acc5 4231 params->component))
191ed202
JP		 4232 goto nla_put_failure;
4233 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_DONE,
6700acc5 4234 params->done, DEVLINK_ATTR_PAD))
191ed202
JP		 4235 goto nla_put_failure;
4236 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TOTAL,
6700acc5 4237 params->total, DEVLINK_ATTR_PAD))
191ed202 4238 goto nla_put_failure;
f92970c6 4239 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TIMEOUT,
6700acc5 4240 params->timeout, DEVLINK_ATTR_PAD))
f92970c6 4241 goto nla_put_failure;
191ed202
JP		 4242
4243out:
4244 genlmsg_end(msg, hdr);
4245 return 0;
4246
4247nla_put_failure:
4248 genlmsg_cancel(msg, hdr);
4249 return -EMSGSIZE;
4250}
4251
4252static void __devlink_flash_update_notify(struct devlink *devlink,
4253 enum devlink_command cmd,
6700acc5 4254 struct devlink_flash_notify *params)
191ed202
JP		 4255{
4256 struct sk_buff *msg;
4257 int err;
4258
4259 WARN_ON(cmd != DEVLINK_CMD_FLASH_UPDATE &&
4260 cmd != DEVLINK_CMD_FLASH_UPDATE_END &&
4261 cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS);
fec1faf2
LR		 4262
4263 if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
4264 return;
191ed202
JP		 4265
4266 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4267 if (!msg)
4268 return;
4269
6700acc5 4270 err = devlink_nl_flash_update_fill(msg, devlink, cmd, params);
191ed202
JP		 4271 if (err)
4272 goto out_free_msg;
4273
4274 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
4275 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
4276 return;
4277
4278out_free_msg:
4279 nlmsg_free(msg);
4280}
4281
52cc5f3a 4282static void devlink_flash_update_begin_notify(struct devlink *devlink)
191ed202 4283{
ed43fbac 4284 struct devlink_flash_notify params = {};
6700acc5 4285
191ed202
JP		 4286 __devlink_flash_update_notify(devlink,
4287 DEVLINK_CMD_FLASH_UPDATE,
6700acc5 4288 &params);
191ed202 4289}
191ed202 4290
52cc5f3a 4291static void devlink_flash_update_end_notify(struct devlink *devlink)
191ed202 4292{
ed43fbac 4293 struct devlink_flash_notify params = {};
6700acc5 4294
191ed202
JP		 4295 __devlink_flash_update_notify(devlink,
4296 DEVLINK_CMD_FLASH_UPDATE_END,
6700acc5 4297 &params);
191ed202 4298}
191ed202
JP		 4299
4300void devlink_flash_update_status_notify(struct devlink *devlink,
4301 const char *status_msg,
4302 const char *component,
4303 unsigned long done,
4304 unsigned long total)
4305{
6700acc5
SN		 4306 struct devlink_flash_notify params = {
4307 .status_msg = status_msg,
4308 .component = component,
4309 .done = done,
4310 .total = total,
4311 };
4312
191ed202
JP		 4313 __devlink_flash_update_notify(devlink,
4314 DEVLINK_CMD_FLASH_UPDATE_STATUS,
6700acc5 4315 &params);
191ed202
JP		 4316}
4317EXPORT_SYMBOL_GPL(devlink_flash_update_status_notify);
4318
f92970c6
SN		 4319void devlink_flash_update_timeout_notify(struct devlink *devlink,
4320 const char *status_msg,
4321 const char *component,
4322 unsigned long timeout)
4323{
6700acc5
SN		 4324 struct devlink_flash_notify params = {
4325 .status_msg = status_msg,
4326 .component = component,
4327 .timeout = timeout,
4328 };
4329
f92970c6
SN		 4330 __devlink_flash_update_notify(devlink,
4331 DEVLINK_CMD_FLASH_UPDATE_STATUS,
6700acc5 4332 &params);
f92970c6
SN		 4333}
4334EXPORT_SYMBOL_GPL(devlink_flash_update_timeout_notify);
4335
76726ccb
JK		 4336static int devlink_nl_cmd_flash_update(struct sk_buff *skb,
4337 struct genl_info *info)
4338{
b44cfd4f 4339 struct nlattr *nla_component, *nla_overwrite_mask, *nla_file_name;
bc75c054 4340 struct devlink_flash_update_params params = {};
76726ccb 4341 struct devlink *devlink = info->user_ptr[0];
b44cfd4f 4342 const char *file_name;
22ec3d23 4343 u32 supported_params;
b44cfd4f 4344 int ret;
76726ccb
JK		 4345
4346 if (!devlink->ops->flash_update)
4347 return -EOPNOTSUPP;
4348
4349 if (!info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME])
4350 return -EINVAL;
22ec3d23
JK		 4351
4352 supported_params = devlink->ops->supported_flash_update_params;
4353
76726ccb 4354 nla_component = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_COMPONENT];
22ec3d23
JK		 4355 if (nla_component) {
4356 if (!(supported_params & DEVLINK_SUPPORT_FLASH_UPDATE_COMPONENT)) {
4357 NL_SET_ERR_MSG_ATTR(info->extack, nla_component,
4358 "component update is not supported by this device");
4359 return -EOPNOTSUPP;
4360 }
bc75c054 4361 params.component = nla_data(nla_component);
22ec3d23 4362 }
76726ccb 4363
5d5b4128
JK		 4364 nla_overwrite_mask = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_OVERWRITE_MASK];
4365 if (nla_overwrite_mask) {
4366 struct nla_bitfield32 sections;
4367
4368 if (!(supported_params & DEVLINK_SUPPORT_FLASH_UPDATE_OVERWRITE_MASK)) {
4369 NL_SET_ERR_MSG_ATTR(info->extack, nla_overwrite_mask,
4370 "overwrite settings are not supported by this device");
4371 return -EOPNOTSUPP;
4372 }
4373 sections = nla_get_bitfield32(nla_overwrite_mask);
4374 params.overwrite_mask = sections.value & sections.selector;
4375 }
4376
b44cfd4f
JK		 4377 nla_file_name = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME];
4378 file_name = nla_data(nla_file_name);
4379 ret = request_firmware(&params.fw, file_name, devlink->dev);
4380 if (ret) {
4381 NL_SET_ERR_MSG_ATTR(info->extack, nla_file_name, "failed to locate the requested firmware file");
4382 return ret;
4383 }
4384
52cc5f3a 4385 devlink_flash_update_begin_notify(devlink);
b44cfd4f 4386 ret = devlink->ops->flash_update(devlink, &params, info->extack);
52cc5f3a 4387 devlink_flash_update_end_notify(devlink);
b44cfd4f
JK		 4388
4389 release_firmware(params.fw);
4390
4391 return ret;
76726ccb
JK		 4392}
4393
036467c3
MS		 4394static const struct devlink_param devlink_param_generic[] = {
4395 {
4396 .id = DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET,
4397 .name = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_NAME,
4398 .type = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_TYPE,
4399 },
4400 {
4401 .id = DEVLINK_PARAM_GENERIC_ID_MAX_MACS,
4402 .name = DEVLINK_PARAM_GENERIC_MAX_MACS_NAME,
4403 .type = DEVLINK_PARAM_GENERIC_MAX_MACS_TYPE,
4404 },
f567bcda
VV		 4405 {
4406 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_SRIOV,
4407 .name = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_NAME,
4408 .type = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_TYPE,
4409 },
f6a69885
AV		 4410 {
4411 .id = DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT,
4412 .name = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_NAME,
4413 .type = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_TYPE,
4414 },
e3b51061
VV		 4415 {
4416 .id = DEVLINK_PARAM_GENERIC_ID_IGNORE_ARI,
4417 .name = DEVLINK_PARAM_GENERIC_IGNORE_ARI_NAME,
4418 .type = DEVLINK_PARAM_GENERIC_IGNORE_ARI_TYPE,
4419 },
f61cba42
VV		 4420 {
4421 .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX,
4422 .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_NAME,
4423 .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_TYPE,
4424 },
16511789
VV		 4425 {
4426 .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN,
4427 .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_NAME,
4428 .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_TYPE,
4429 },
846e980a
ST		 4430 {
4431 .id = DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY,
4432 .name = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_NAME,
4433 .type = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_TYPE,
4434 },
5bbd21df
DM		 4435 {
4436 .id = DEVLINK_PARAM_GENERIC_ID_RESET_DEV_ON_DRV_PROBE,
4437 .name = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_NAME,
4438 .type = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_TYPE,
4439 },
6c7295e1
MG		 4440 {
4441 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_ROCE,
4442 .name = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_NAME,
4443 .type = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_TYPE,
4444 },
195d9dec
MS		 4445 {
4446 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_REMOTE_DEV_RESET,
4447 .name = DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_NAME,
4448 .type = DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_TYPE,
4449 },
f13a5ad8
PP		 4450 {
4451 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_ETH,
4452 .name = DEVLINK_PARAM_GENERIC_ENABLE_ETH_NAME,
4453 .type = DEVLINK_PARAM_GENERIC_ENABLE_ETH_TYPE,
4454 },
8ddaabee
PP		 4455 {
4456 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_RDMA,
4457 .name = DEVLINK_PARAM_GENERIC_ENABLE_RDMA_NAME,
4458 .type = DEVLINK_PARAM_GENERIC_ENABLE_RDMA_TYPE,
4459 },
076b2a9d
PP		 4460 {
4461 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_VNET,
4462 .name = DEVLINK_PARAM_GENERIC_ENABLE_VNET_NAME,
4463 .type = DEVLINK_PARAM_GENERIC_ENABLE_VNET_TYPE,
4464 },
325e0d0a
SS		 4465 {
4466 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_IWARP,
4467 .name = DEVLINK_PARAM_GENERIC_ENABLE_IWARP_NAME,
4468 .type = DEVLINK_PARAM_GENERIC_ENABLE_IWARP_TYPE,
4469 },
47402385
SD		 4470 {
4471 .id = DEVLINK_PARAM_GENERIC_ID_IO_EQ_SIZE,
4472 .name = DEVLINK_PARAM_GENERIC_IO_EQ_SIZE_NAME,
4473 .type = DEVLINK_PARAM_GENERIC_IO_EQ_SIZE_TYPE,
4474 },
0b5705eb
SD		 4475 {
4476 .id = DEVLINK_PARAM_GENERIC_ID_EVENT_EQ_SIZE,
4477 .name = DEVLINK_PARAM_GENERIC_EVENT_EQ_SIZE_NAME,
4478 .type = DEVLINK_PARAM_GENERIC_EVENT_EQ_SIZE_TYPE,
4479 },
036467c3 4480};
eabaef18
MS		 4481
4482static int devlink_param_generic_verify(const struct devlink_param *param)
4483{
4484 /* verify it match generic parameter by id and name */
4485 if (param->id > DEVLINK_PARAM_GENERIC_ID_MAX)
4486 return -EINVAL;
4487 if (strcmp(param->name, devlink_param_generic[param->id].name))
4488 return -ENOENT;
4489
4490 WARN_ON(param->type != devlink_param_generic[param->id].type);
4491
4492 return 0;
4493}
4494
4495static int devlink_param_driver_verify(const struct devlink_param *param)
4496{
4497 int i;
4498
4499 if (param->id <= DEVLINK_PARAM_GENERIC_ID_MAX)
4500 return -EINVAL;
4501 /* verify no such name in generic params */
4502 for (i = 0; i <= DEVLINK_PARAM_GENERIC_ID_MAX; i++)
4503 if (!strcmp(param->name, devlink_param_generic[i].name))
4504 return -EEXIST;
4505
4506 return 0;
4507}
4508
4509static struct devlink_param_item *
4510devlink_param_find_by_name(struct list_head *param_list,
4511 const char *param_name)
4512{
4513 struct devlink_param_item *param_item;
4514
4515 list_for_each_entry(param_item, param_list, list)
4516 if (!strcmp(param_item->param->name, param_name))
4517 return param_item;
4518 return NULL;
4519}
4520
ec01aeb1
MS		 4521static struct devlink_param_item *
4522devlink_param_find_by_id(struct list_head *param_list, u32 param_id)
4523{
4524 struct devlink_param_item *param_item;
4525
4526 list_for_each_entry(param_item, param_list, list)
4527 if (param_item->param->id == param_id)
4528 return param_item;
4529 return NULL;
4530}
4531
45f05def
MS		 4532static bool
4533devlink_param_cmode_is_supported(const struct devlink_param *param,
4534 enum devlink_param_cmode cmode)
4535{
4536 return test_bit(cmode, &param->supported_cmodes);
4537}
4538
4539static int devlink_param_get(struct devlink *devlink,
4540 const struct devlink_param *param,
4541 struct devlink_param_gset_ctx *ctx)
4542{
4543 if (!param->get)
4544 return -EOPNOTSUPP;
4545 return param->get(devlink, param->id, ctx);
4546}
4547
e3b7ca18
MS		 4548static int devlink_param_set(struct devlink *devlink,
4549 const struct devlink_param *param,
4550 struct devlink_param_gset_ctx *ctx)
4551{
4552 if (!param->set)
4553 return -EOPNOTSUPP;
4554 return param->set(devlink, param->id, ctx);
4555}
4556
45f05def
MS		 4557static int
4558devlink_param_type_to_nla_type(enum devlink_param_type param_type)
4559{
4560 switch (param_type) {
4561 case DEVLINK_PARAM_TYPE_U8:
4562 return NLA_U8;
4563 case DEVLINK_PARAM_TYPE_U16:
4564 return NLA_U16;
4565 case DEVLINK_PARAM_TYPE_U32:
4566 return NLA_U32;
4567 case DEVLINK_PARAM_TYPE_STRING:
4568 return NLA_STRING;
4569 case DEVLINK_PARAM_TYPE_BOOL:
4570 return NLA_FLAG;
4571 default:
4572 return -EINVAL;
4573 }
4574}
4575
4576static int
4577devlink_nl_param_value_fill_one(struct sk_buff *msg,
4578 enum devlink_param_type type,
4579 enum devlink_param_cmode cmode,
4580 union devlink_param_value val)
4581{
4582 struct nlattr *param_value_attr;
4583
ae0be8de
MK		 4584 param_value_attr = nla_nest_start_noflag(msg,
4585 DEVLINK_ATTR_PARAM_VALUE);
45f05def
MS		 4586 if (!param_value_attr)
4587 goto nla_put_failure;
4588
4589 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_CMODE, cmode))
4590 goto value_nest_cancel;
4591
4592 switch (type) {
4593 case DEVLINK_PARAM_TYPE_U8:
4594 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu8))
4595 goto value_nest_cancel;
4596 break;
4597 case DEVLINK_PARAM_TYPE_U16:
4598 if (nla_put_u16(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu16))
4599 goto value_nest_cancel;
4600 break;
4601 case DEVLINK_PARAM_TYPE_U32:
4602 if (nla_put_u32(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu32))
4603 goto value_nest_cancel;
4604 break;
4605 case DEVLINK_PARAM_TYPE_STRING:
4606 if (nla_put_string(msg, DEVLINK_ATTR_PARAM_VALUE_DATA,
4607 val.vstr))
4608 goto value_nest_cancel;
4609 break;
4610 case DEVLINK_PARAM_TYPE_BOOL:
4611 if (val.vbool &&
4612 nla_put_flag(msg, DEVLINK_ATTR_PARAM_VALUE_DATA))
4613 goto value_nest_cancel;
4614 break;
4615 }
4616
4617 nla_nest_end(msg, param_value_attr);
4618 return 0;
4619
4620value_nest_cancel:
4621 nla_nest_cancel(msg, param_value_attr);
4622nla_put_failure:
4623 return -EMSGSIZE;
4624}
4625
4626static int devlink_nl_param_fill(struct sk_buff *msg, struct devlink *devlink,
f4601dee 4627 unsigned int port_index,
45f05def
MS		 4628 struct devlink_param_item *param_item,
4629 enum devlink_command cmd,
4630 u32 portid, u32 seq, int flags)
4631{
4632 union devlink_param_value param_value[DEVLINK_PARAM_CMODE_MAX + 1];
7c62cfb8 4633 bool param_value_set[DEVLINK_PARAM_CMODE_MAX + 1] = {};
45f05def
MS		 4634 const struct devlink_param *param = param_item->param;
4635 struct devlink_param_gset_ctx ctx;
4636 struct nlattr *param_values_list;
4637 struct nlattr *param_attr;
4638 int nla_type;
4639 void *hdr;
4640 int err;
4641 int i;
4642
4643 /* Get value from driver part to driverinit configuration mode */
4644 for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
4645 if (!devlink_param_cmode_is_supported(param, i))
4646 continue;
4647 if (i == DEVLINK_PARAM_CMODE_DRIVERINIT) {
4648 if (!param_item->driverinit_value_valid)
4649 return -EOPNOTSUPP;
4650 param_value[i] = param_item->driverinit_value;
4651 } else {
4652 ctx.cmode = i;
4653 err = devlink_param_get(devlink, param, &ctx);
4654 if (err)
4655 return err;
4656 param_value[i] = ctx.val;
4657 }
7c62cfb8 4658 param_value_set[i] = true;
45f05def
MS		 4659 }
4660
4661 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
4662 if (!hdr)
4663 return -EMSGSIZE;
4664
4665 if (devlink_nl_put_handle(msg, devlink))
4666 goto genlmsg_cancel;
f4601dee 4667
c1e5786d
VV		 4668 if (cmd == DEVLINK_CMD_PORT_PARAM_GET ||
4669 cmd == DEVLINK_CMD_PORT_PARAM_NEW ||
4670 cmd == DEVLINK_CMD_PORT_PARAM_DEL)
f4601dee
VV		 4671 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, port_index))
4672 goto genlmsg_cancel;
4673
ae0be8de 4674 param_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PARAM);
45f05def
MS		 4675 if (!param_attr)
4676 goto genlmsg_cancel;
4677 if (nla_put_string(msg, DEVLINK_ATTR_PARAM_NAME, param->name))
4678 goto param_nest_cancel;
4679 if (param->generic && nla_put_flag(msg, DEVLINK_ATTR_PARAM_GENERIC))
4680 goto param_nest_cancel;
4681
4682 nla_type = devlink_param_type_to_nla_type(param->type);
4683 if (nla_type < 0)
4684 goto param_nest_cancel;
4685 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_TYPE, nla_type))
4686 goto param_nest_cancel;
4687
ae0be8de
MK		 4688 param_values_list = nla_nest_start_noflag(msg,
4689 DEVLINK_ATTR_PARAM_VALUES_LIST);
45f05def
MS		 4690 if (!param_values_list)
4691 goto param_nest_cancel;
4692
4693 for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
7c62cfb8 4694 if (!param_value_set[i])
45f05def
MS		 4695 continue;
4696 err = devlink_nl_param_value_fill_one(msg, param->type,
4697 i, param_value[i]);
4698 if (err)
4699 goto values_list_nest_cancel;
4700 }
4701
4702 nla_nest_end(msg, param_values_list);
4703 nla_nest_end(msg, param_attr);
4704 genlmsg_end(msg, hdr);
4705 return 0;
4706
4707values_list_nest_cancel:
4708 nla_nest_end(msg, param_values_list);
4709param_nest_cancel:
4710 nla_nest_cancel(msg, param_attr);
4711genlmsg_cancel:
4712 genlmsg_cancel(msg, hdr);
4713 return -EMSGSIZE;
4714}
4715
ea601e17 4716static void devlink_param_notify(struct devlink *devlink,
c1e5786d 4717 unsigned int port_index,
ea601e17
MS		 4718 struct devlink_param_item *param_item,
4719 enum devlink_command cmd)
4720{
4721 struct sk_buff *msg;
4722 int err;
4723
c1e5786d
VV		 4724 WARN_ON(cmd != DEVLINK_CMD_PARAM_NEW && cmd != DEVLINK_CMD_PARAM_DEL &&
4725 cmd != DEVLINK_CMD_PORT_PARAM_NEW &&
4726 cmd != DEVLINK_CMD_PORT_PARAM_DEL);
7a690ad4 4727 ASSERT_DEVLINK_REGISTERED(devlink);
ea601e17
MS		 4728
4729 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4730 if (!msg)
4731 return;
c1e5786d
VV		 4732 err = devlink_nl_param_fill(msg, devlink, port_index, param_item, cmd,
4733 0, 0, 0);
ea601e17
MS		 4734 if (err) {
4735 nlmsg_free(msg);
4736 return;
4737 }
4738
4739 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
4740 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
4741}
4742
45f05def
MS		 4743static int devlink_nl_cmd_param_get_dumpit(struct sk_buff *msg,
4744 struct netlink_callback *cb)
4745{
4746 struct devlink_param_item *param_item;
4747 struct devlink *devlink;
4748 int start = cb->args[0];
11a861d7 4749 unsigned long index;
45f05def 4750 int idx = 0;
c62c2cfb 4751 int err = 0;
45f05def
MS		 4752
4753 mutex_lock(&devlink_mutex);
11a861d7 4754 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
437ebfd9 4755 if (!devlink_try_get(devlink))
45f05def 4756 continue;
437ebfd9
LR		 4757
4758 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
4759 goto retry;
4760
45f05def
MS		 4761 mutex_lock(&devlink->lock);
4762 list_for_each_entry(param_item, &devlink->param_list, list) {
4763 if (idx < start) {
4764 idx++;
4765 continue;
4766 }
f4601dee 4767 err = devlink_nl_param_fill(msg, devlink, 0, param_item,
45f05def
MS		 4768 DEVLINK_CMD_PARAM_GET,
4769 NETLINK_CB(cb->skb).portid,
4770 cb->nlh->nlmsg_seq,
4771 NLM_F_MULTI);
82274d07
JK		 4772 if (err == -EOPNOTSUPP) {
4773 err = 0;
4774 } else if (err) {
45f05def 4775 mutex_unlock(&devlink->lock);
437ebfd9 4776 devlink_put(devlink);
45f05def
MS		 4777 goto out;
4778 }
4779 idx++;
4780 }
4781 mutex_unlock(&devlink->lock);
437ebfd9
LR		 4782retry:
4783 devlink_put(devlink);
45f05def
MS		 4784 }
4785out:
4786 mutex_unlock(&devlink_mutex);
4787
c62c2cfb
JP		 4788 if (err != -EMSGSIZE)
4789 return err;
4790
45f05def
MS		 4791 cb->args[0] = idx;
4792 return msg->len;
4793}
4794
e3b7ca18
MS		 4795static int
4796devlink_param_type_get_from_info(struct genl_info *info,
4797 enum devlink_param_type *param_type)
4798{
4799 if (!info->attrs[DEVLINK_ATTR_PARAM_TYPE])
4800 return -EINVAL;
4801
4802 switch (nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_TYPE])) {
4803 case NLA_U8:
4804 *param_type = DEVLINK_PARAM_TYPE_U8;
4805 break;
4806 case NLA_U16:
4807 *param_type = DEVLINK_PARAM_TYPE_U16;
4808 break;
4809 case NLA_U32:
4810 *param_type = DEVLINK_PARAM_TYPE_U32;
4811 break;
4812 case NLA_STRING:
4813 *param_type = DEVLINK_PARAM_TYPE_STRING;
4814 break;
4815 case NLA_FLAG:
4816 *param_type = DEVLINK_PARAM_TYPE_BOOL;
4817 break;
4818 default:
4819 return -EINVAL;
4820 }
4821
4822 return 0;
4823}
4824
4825static int
4826devlink_param_value_get_from_info(const struct devlink_param *param,
4827 struct genl_info *info,
4828 union devlink_param_value *value)
4829{
8750939b 4830 struct nlattr *param_data;
f355cfcd
MS		 4831 int len;
4832
8750939b
JK		 4833 param_data = info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA];
4834
4835 if (param->type != DEVLINK_PARAM_TYPE_BOOL && !param_data)
e3b7ca18
MS		 4836 return -EINVAL;
4837
4838 switch (param->type) {
4839 case DEVLINK_PARAM_TYPE_U8:
8750939b
JK		 4840 if (nla_len(param_data) != sizeof(u8))
4841 return -EINVAL;
4842 value->vu8 = nla_get_u8(param_data);
e3b7ca18
MS		 4843 break;
4844 case DEVLINK_PARAM_TYPE_U16:
8750939b
JK		 4845 if (nla_len(param_data) != sizeof(u16))
4846 return -EINVAL;
4847 value->vu16 = nla_get_u16(param_data);
e3b7ca18
MS		 4848 break;
4849 case DEVLINK_PARAM_TYPE_U32:
8750939b
JK		 4850 if (nla_len(param_data) != sizeof(u32))
4851 return -EINVAL;
4852 value->vu32 = nla_get_u32(param_data);
e3b7ca18
MS		 4853 break;
4854 case DEVLINK_PARAM_TYPE_STRING:
8750939b
JK		 4855 len = strnlen(nla_data(param_data), nla_len(param_data));
4856 if (len == nla_len(param_data) ||
bde74ad1 4857 len >= __DEVLINK_PARAM_MAX_STRING_VALUE)
e3b7ca18 4858 return -EINVAL;
8750939b 4859 strcpy(value->vstr, nla_data(param_data));
e3b7ca18
MS		 4860 break;
4861 case DEVLINK_PARAM_TYPE_BOOL:
8750939b
JK		 4862 if (param_data && nla_len(param_data))
4863 return -EINVAL;
4864 value->vbool = nla_get_flag(param_data);
e3b7ca18
MS		 4865 break;
4866 }
4867 return 0;
4868}
4869
45f05def 4870static struct devlink_param_item *
f4601dee 4871devlink_param_get_from_info(struct list_head *param_list,
45f05def
MS		 4872 struct genl_info *info)
4873{
4874 char *param_name;
4875
4876 if (!info->attrs[DEVLINK_ATTR_PARAM_NAME])
4877 return NULL;
4878
4879 param_name = nla_data(info->attrs[DEVLINK_ATTR_PARAM_NAME]);
f4601dee 4880 return devlink_param_find_by_name(param_list, param_name);
45f05def
MS		 4881}
4882
4883static int devlink_nl_cmd_param_get_doit(struct sk_buff *skb,
4884 struct genl_info *info)
4885{
4886 struct devlink *devlink = info->user_ptr[0];
4887 struct devlink_param_item *param_item;
4888 struct sk_buff *msg;
4889 int err;
4890
f4601dee 4891 param_item = devlink_param_get_from_info(&devlink->param_list, info);
45f05def
MS		 4892 if (!param_item)
4893 return -EINVAL;
4894
4895 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4896 if (!msg)
4897 return -ENOMEM;
4898
f4601dee 4899 err = devlink_nl_param_fill(msg, devlink, 0, param_item,
45f05def
MS		 4900 DEVLINK_CMD_PARAM_GET,
4901 info->snd_portid, info->snd_seq, 0);
4902 if (err) {
4903 nlmsg_free(msg);
4904 return err;
4905 }
4906
4907 return genlmsg_reply(msg, info);
4908}
4909
9c54873b 4910static int __devlink_nl_cmd_param_set_doit(struct devlink *devlink,
c1e5786d 4911 unsigned int port_index,
9c54873b
VV		 4912 struct list_head *param_list,
4913 struct genl_info *info,
4914 enum devlink_command cmd)
e3b7ca18 4915{
e3b7ca18
MS		 4916 enum devlink_param_type param_type;
4917 struct devlink_param_gset_ctx ctx;
4918 enum devlink_param_cmode cmode;
4919 struct devlink_param_item *param_item;
4920 const struct devlink_param *param;
4921 union devlink_param_value value;
4922 int err = 0;
4923
9c54873b 4924 param_item = devlink_param_get_from_info(param_list, info);
e3b7ca18
MS		 4925 if (!param_item)
4926 return -EINVAL;
4927 param = param_item->param;
4928 err = devlink_param_type_get_from_info(info, &param_type);
4929 if (err)
4930 return err;
4931 if (param_type != param->type)
4932 return -EINVAL;
4933 err = devlink_param_value_get_from_info(param, info, &value);
4934 if (err)
4935 return err;
4936 if (param->validate) {
4937 err = param->validate(devlink, param->id, value, info->extack);
4938 if (err)
4939 return err;
4940 }
4941
4942 if (!info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE])
4943 return -EINVAL;
4944 cmode = nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE]);
4945 if (!devlink_param_cmode_is_supported(param, cmode))
4946 return -EOPNOTSUPP;
4947
4948 if (cmode == DEVLINK_PARAM_CMODE_DRIVERINIT) {
1276534c
MS		 4949 if (param->type == DEVLINK_PARAM_TYPE_STRING)
4950 strcpy(param_item->driverinit_value.vstr, value.vstr);
4951 else
4952 param_item->driverinit_value = value;
e3b7ca18
MS		 4953 param_item->driverinit_value_valid = true;
4954 } else {
4955 if (!param->set)
4956 return -EOPNOTSUPP;
4957 ctx.val = value;
4958 ctx.cmode = cmode;
4959 err = devlink_param_set(devlink, param, &ctx);
4960 if (err)
4961 return err;
4962 }
4963
c1e5786d 4964 devlink_param_notify(devlink, port_index, param_item, cmd);
e3b7ca18
MS		 4965 return 0;
4966}
4967
9c54873b
VV		 4968static int devlink_nl_cmd_param_set_doit(struct sk_buff *skb,
4969 struct genl_info *info)
4970{
4971 struct devlink *devlink = info->user_ptr[0];
4972
c1e5786d 4973 return __devlink_nl_cmd_param_set_doit(devlink, 0, &devlink->param_list,
9c54873b
VV		 4974 info, DEVLINK_CMD_PARAM_NEW);
4975}
4976
f4601dee
VV		 4977static int devlink_nl_cmd_port_param_get_dumpit(struct sk_buff *msg,
4978 struct netlink_callback *cb)
4979{
4980 struct devlink_param_item *param_item;
4981 struct devlink_port *devlink_port;
4982 struct devlink *devlink;
4983 int start = cb->args[0];
11a861d7 4984 unsigned long index;
f4601dee 4985 int idx = 0;
c62c2cfb 4986 int err = 0;
f4601dee
VV		 4987
4988 mutex_lock(&devlink_mutex);
11a861d7 4989 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
437ebfd9 4990 if (!devlink_try_get(devlink))
f4601dee 4991 continue;
437ebfd9
LR		 4992
4993 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
4994 goto retry;
4995
f4601dee
VV		 4996 mutex_lock(&devlink->lock);
4997 list_for_each_entry(devlink_port, &devlink->port_list, list) {
4998 list_for_each_entry(param_item,
4999 &devlink_port->param_list, list) {
5000 if (idx < start) {
5001 idx++;
5002 continue;
5003 }
5004 err = devlink_nl_param_fill(msg,
5005 devlink_port->devlink,
5006 devlink_port->index, param_item,
5007 DEVLINK_CMD_PORT_PARAM_GET,
5008 NETLINK_CB(cb->skb).portid,
5009 cb->nlh->nlmsg_seq,
5010 NLM_F_MULTI);
82274d07
JK		 5011 if (err == -EOPNOTSUPP) {
5012 err = 0;
5013 } else if (err) {
f4601dee 5014 mutex_unlock(&devlink->lock);
437ebfd9 5015 devlink_put(devlink);
f4601dee
VV		 5016 goto out;
5017 }
5018 idx++;
5019 }
5020 }
5021 mutex_unlock(&devlink->lock);
437ebfd9
LR		 5022retry:
5023 devlink_put(devlink);
f4601dee
VV		 5024 }
5025out:
5026 mutex_unlock(&devlink_mutex);
5027
c62c2cfb
JP		 5028 if (err != -EMSGSIZE)
5029 return err;
5030
f4601dee
VV		 5031 cb->args[0] = idx;
5032 return msg->len;
5033}
5034
5035static int devlink_nl_cmd_port_param_get_doit(struct sk_buff *skb,
5036 struct genl_info *info)
5037{
7e238de8 5038 struct devlink_port *devlink_port = info->user_ptr[1];
f4601dee
VV		 5039 struct devlink_param_item *param_item;
5040 struct sk_buff *msg;
5041 int err;
5042
5043 param_item = devlink_param_get_from_info(&devlink_port->param_list,
5044 info);
5045 if (!param_item)
5046 return -EINVAL;
5047
5048 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5049 if (!msg)
5050 return -ENOMEM;
5051
5052 err = devlink_nl_param_fill(msg, devlink_port->devlink,
5053 devlink_port->index, param_item,
5054 DEVLINK_CMD_PORT_PARAM_GET,
5055 info->snd_portid, info->snd_seq, 0);
5056 if (err) {
5057 nlmsg_free(msg);
5058 return err;
5059 }
5060
5061 return genlmsg_reply(msg, info);
5062}
5063
9c54873b
VV		 5064static int devlink_nl_cmd_port_param_set_doit(struct sk_buff *skb,
5065 struct genl_info *info)
5066{
7e238de8 5067 struct devlink_port *devlink_port = info->user_ptr[1];
9c54873b
VV		 5068
5069 return __devlink_nl_cmd_param_set_doit(devlink_port->devlink,
c1e5786d
VV		 5070 devlink_port->index,
5071 &devlink_port->param_list, info,
5072 DEVLINK_CMD_PORT_PARAM_NEW);
9c54873b
VV		 5073}
5074
a006d467
AV		 5075static int devlink_nl_region_snapshot_id_put(struct sk_buff *msg,
5076 struct devlink *devlink,
5077 struct devlink_snapshot *snapshot)
5078{
5079 struct nlattr *snap_attr;
5080 int err;
5081
ae0be8de 5082 snap_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_SNAPSHOT);
a006d467
AV		 5083 if (!snap_attr)
5084 return -EINVAL;
5085
5086 err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID, snapshot->id);
5087 if (err)
5088 goto nla_put_failure;
5089
5090 nla_nest_end(msg, snap_attr);
5091 return 0;
5092
5093nla_put_failure:
5094 nla_nest_cancel(msg, snap_attr);
5095 return err;
5096}
5097
5098static int devlink_nl_region_snapshots_id_put(struct sk_buff *msg,
5099 struct devlink *devlink,
5100 struct devlink_region *region)
5101{
5102 struct devlink_snapshot *snapshot;
5103 struct nlattr *snapshots_attr;
5104 int err;
5105
ae0be8de
MK		 5106 snapshots_attr = nla_nest_start_noflag(msg,
5107 DEVLINK_ATTR_REGION_SNAPSHOTS);
a006d467
AV		 5108 if (!snapshots_attr)
5109 return -EINVAL;
5110
5111 list_for_each_entry(snapshot, &region->snapshot_list, list) {
5112 err = devlink_nl_region_snapshot_id_put(msg, devlink, snapshot);
5113 if (err)
5114 goto nla_put_failure;
5115 }
5116
5117 nla_nest_end(msg, snapshots_attr);
5118 return 0;
5119
5120nla_put_failure:
5121 nla_nest_cancel(msg, snapshots_attr);
5122 return err;
5123}
5124
d8db7ea5
AV		 5125static int devlink_nl_region_fill(struct sk_buff *msg, struct devlink *devlink,
5126 enum devlink_command cmd, u32 portid,
5127 u32 seq, int flags,
5128 struct devlink_region *region)
5129{
5130 void *hdr;
5131 int err;
5132
5133 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
5134 if (!hdr)
5135 return -EMSGSIZE;
5136
5137 err = devlink_nl_put_handle(msg, devlink);
5138 if (err)
5139 goto nla_put_failure;
5140
6c211809
DC		 5141 if (region->port) {
5142 err = nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
5143 region->port->index);
5144 if (err)
544e7c33 5145 goto nla_put_failure;
6c211809 5146 }
544e7c33 5147
e8937681 5148 err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME, region->ops->name);
d8db7ea5
AV		 5149 if (err)
5150 goto nla_put_failure;
5151
5152 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
5153 region->size,
5154 DEVLINK_ATTR_PAD);
5155 if (err)
5156 goto nla_put_failure;
5157
a70e3f02
JK		 5158 err = nla_put_u32(msg, DEVLINK_ATTR_REGION_MAX_SNAPSHOTS,
5159 region->max_snapshots);
5160 if (err)
5161 goto nla_put_failure;
5162
a006d467
AV		 5163 err = devlink_nl_region_snapshots_id_put(msg, devlink, region);
5164 if (err)
5165 goto nla_put_failure;
5166
d8db7ea5
AV		 5167 genlmsg_end(msg, hdr);
5168 return 0;
5169
5170nla_put_failure:
5171 genlmsg_cancel(msg, hdr);
5172 return err;
5173}
5174
dd86fec7
JK		 5175static struct sk_buff *
5176devlink_nl_region_notify_build(struct devlink_region *region,
5177 struct devlink_snapshot *snapshot,
5178 enum devlink_command cmd, u32 portid, u32 seq)
866319bb
AV		 5179{
5180 struct devlink *devlink = region->devlink;
5181 struct sk_buff *msg;
5182 void *hdr;
5183 int err;
5184
866319bb
AV		 5185
5186 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5187 if (!msg)
dd86fec7 5188 return ERR_PTR(-ENOMEM);
866319bb 5189
dd86fec7
JK		 5190 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, 0, cmd);
5191 if (!hdr) {
5192 err = -EMSGSIZE;
866319bb 5193 goto out_free_msg;
dd86fec7 5194 }
866319bb
AV		 5195
5196 err = devlink_nl_put_handle(msg, devlink);
5197 if (err)
5198 goto out_cancel_msg;
5199
6c211809
DC		 5200 if (region->port) {
5201 err = nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
5202 region->port->index);
5203 if (err)
544e7c33 5204 goto out_cancel_msg;
6c211809 5205 }
544e7c33 5206
866319bb 5207 err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME,
e8937681 5208 region->ops->name);
866319bb
AV		 5209 if (err)
5210 goto out_cancel_msg;
5211
5212 if (snapshot) {
5213 err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID,
5214 snapshot->id);
5215 if (err)
5216 goto out_cancel_msg;
5217 } else {
5218 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
5219 region->size, DEVLINK_ATTR_PAD);
5220 if (err)
5221 goto out_cancel_msg;
5222 }
5223 genlmsg_end(msg, hdr);
5224
dd86fec7 5225 return msg;
866319bb
AV		 5226
5227out_cancel_msg:
5228 genlmsg_cancel(msg, hdr);
5229out_free_msg:
5230 nlmsg_free(msg);
dd86fec7
JK		 5231 return ERR_PTR(err);
5232}
5233
5234static void devlink_nl_region_notify(struct devlink_region *region,
5235 struct devlink_snapshot *snapshot,
5236 enum devlink_command cmd)
5237{
cf530217 5238 struct devlink *devlink = region->devlink;
dd86fec7
JK		 5239 struct sk_buff *msg;
5240
5241 WARN_ON(cmd != DEVLINK_CMD_REGION_NEW && cmd != DEVLINK_CMD_REGION_DEL);
ef91abfb
LR		 5242 if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
5243 return;
dd86fec7
JK		 5244
5245 msg = devlink_nl_region_notify_build(region, snapshot, cmd, 0, 0);
5246 if (IS_ERR(msg))
5247 return;
5248
cf530217
LR		 5249 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
5250 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
866319bb
AV		 5251}
5252
12102436
JK		 5253/**
5254 * __devlink_snapshot_id_increment - Increment number of snapshots using an id
5255 * @devlink: devlink instance
5256 * @id: the snapshot id
5257 *
5258 * Track when a new snapshot begins using an id. Load the count for the
5259 * given id from the snapshot xarray, increment it, and store it back.
5260 *
5261 * Called when a new snapshot is created with the given id.
5262 *
5263 * The id *must* have been previously allocated by
5264 * devlink_region_snapshot_id_get().
5265 *
5266 * Returns 0 on success, or an error on failure.
5267 */
5268static int __devlink_snapshot_id_increment(struct devlink *devlink, u32 id)
5269{
5270 unsigned long count;
5271 void *p;
5272
5273 lockdep_assert_held(&devlink->lock);
5274
5275 p = xa_load(&devlink->snapshot_ids, id);
5276 if (WARN_ON(!p))
5277 return -EINVAL;
5278
5279 if (WARN_ON(!xa_is_value(p)))
5280 return -EINVAL;
5281
5282 count = xa_to_value(p);
5283 count++;
5284
5285 return xa_err(xa_store(&devlink->snapshot_ids, id, xa_mk_value(count),
5286 GFP_KERNEL));
5287}
5288
5289/**
5290 * __devlink_snapshot_id_decrement - Decrease number of snapshots using an id
5291 * @devlink: devlink instance
5292 * @id: the snapshot id
5293 *
5294 * Track when a snapshot is deleted and stops using an id. Load the count
5295 * for the given id from the snapshot xarray, decrement it, and store it
5296 * back.
5297 *
5298 * If the count reaches zero, erase this id from the xarray, freeing it
5299 * up for future re-use by devlink_region_snapshot_id_get().
5300 *
5301 * Called when a snapshot using the given id is deleted, and when the
5302 * initial allocator of the id is finished using it.
5303 */
5304static void __devlink_snapshot_id_decrement(struct devlink *devlink, u32 id)
5305{
5306 unsigned long count;
5307 void *p;
5308
5309 lockdep_assert_held(&devlink->lock);
5310
5311 p = xa_load(&devlink->snapshot_ids, id);
5312 if (WARN_ON(!p))
5313 return;
5314
5315 if (WARN_ON(!xa_is_value(p)))
5316 return;
5317
5318 count = xa_to_value(p);
5319
5320 if (count > 1) {
5321 count--;
5322 xa_store(&devlink->snapshot_ids, id, xa_mk_value(count),
5323 GFP_KERNEL);
5324 } else {
5325 /* If this was the last user, we can erase this id */
5326 xa_erase(&devlink->snapshot_ids, id);
5327 }
5328}
5329
b9a17abf
JK		 5330/**
5331 * __devlink_snapshot_id_insert - Insert a specific snapshot ID
5332 * @devlink: devlink instance
5333 * @id: the snapshot id
5334 *
5335 * Mark the given snapshot id as used by inserting a zero value into the
5336 * snapshot xarray.
5337 *
5338 * This must be called while holding the devlink instance lock. Unlike
5339 * devlink_snapshot_id_get, the initial reference count is zero, not one.
5340 * It is expected that the id will immediately be used before
5341 * releasing the devlink instance lock.
5342 *
5343 * Returns zero on success, or an error code if the snapshot id could not
5344 * be inserted.
5345 */
5346static int __devlink_snapshot_id_insert(struct devlink *devlink, u32 id)
5347{
5348 lockdep_assert_held(&devlink->lock);
5349
bd71ea60 5350 if (xa_load(&devlink->snapshot_ids, id))
b9a17abf
JK		 5351 return -EEXIST;
5352
5353 return xa_err(xa_store(&devlink->snapshot_ids, id, xa_mk_value(0),
5354 GFP_KERNEL));
5355}
5356
7000108f
JK		 5357/**
5358 * __devlink_region_snapshot_id_get - get snapshot ID
5359 * @devlink: devlink instance
7ef19d3b 5360 * @id: storage to return snapshot id
7000108f 5361 *
7ef19d3b
JK		 5362 * Allocates a new snapshot id. Returns zero on success, or a negative
5363 * error on failure. Must be called while holding the devlink instance
5364 * lock.
12102436
JK		 5365 *
5366 * Snapshot IDs are tracked using an xarray which stores the number of
5367 * users of the snapshot id.
5368 *
5369 * Note that the caller of this function counts as a 'user', in order to
5370 * avoid race conditions. The caller must release its hold on the
5371 * snapshot by using devlink_region_snapshot_id_put.
7000108f 5372 */
7ef19d3b 5373static int __devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id)
7000108f
JK		 5374{
5375 lockdep_assert_held(&devlink->lock);
7ef19d3b 5376
12102436
JK		 5377 return xa_alloc(&devlink->snapshot_ids, id, xa_mk_value(1),
5378 xa_limit_32b, GFP_KERNEL);
7000108f
JK		 5379}
5380
cf80faee
JK		 5381/**
5382 * __devlink_region_snapshot_create - create a new snapshot
5383 * This will add a new snapshot of a region. The snapshot
5384 * will be stored on the region struct and can be accessed
5385 * from devlink. This is useful for future analyses of snapshots.
5386 * Multiple snapshots can be created on a region.
5387 * The @snapshot_id should be obtained using the getter function.
5388 *
5389 * Must be called only while holding the devlink instance lock.
5390 *
5391 * @region: devlink region of the snapshot
5392 * @data: snapshot data
5393 * @snapshot_id: snapshot id to be created
5394 */
5395static int
5396__devlink_region_snapshot_create(struct devlink_region *region,
5397 u8 *data, u32 snapshot_id)
5398{
5399 struct devlink *devlink = region->devlink;
5400 struct devlink_snapshot *snapshot;
12102436 5401 int err;
cf80faee
JK		 5402
5403 lockdep_assert_held(&devlink->lock);
5404
5405 /* check if region can hold one more snapshot */
5406 if (region->cur_snapshots == region->max_snapshots)
47a39f61 5407 return -ENOSPC;
cf80faee
JK		 5408
5409 if (devlink_region_snapshot_get_by_id(region, snapshot_id))
5410 return -EEXIST;
5411
5412 snapshot = kzalloc(sizeof(*snapshot), GFP_KERNEL);
5413 if (!snapshot)
5414 return -ENOMEM;
5415
12102436
JK		 5416 err = __devlink_snapshot_id_increment(devlink, snapshot_id);
5417 if (err)
5418 goto err_snapshot_id_increment;
5419
cf80faee
JK		 5420 snapshot->id = snapshot_id;
5421 snapshot->region = region;
5422 snapshot->data = data;
5423
5424 list_add_tail(&snapshot->list, &region->snapshot_list);
5425
5426 region->cur_snapshots++;
5427
5428 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_NEW);
5429 return 0;
12102436
JK		 5430
5431err_snapshot_id_increment:
5432 kfree(snapshot);
5433 return err;
cf80faee
JK		 5434}
5435
92b49822
JP		 5436static void devlink_region_snapshot_del(struct devlink_region *region,
5437 struct devlink_snapshot *snapshot)
5438{
12102436
JK		 5439 struct devlink *devlink = region->devlink;
5440
5441 lockdep_assert_held(&devlink->lock);
5442
92b49822
JP		 5443 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_DEL);
5444 region->cur_snapshots--;
5445 list_del(&snapshot->list);
a0a09f6b 5446 region->ops->destructor(snapshot->data);
12102436 5447 __devlink_snapshot_id_decrement(devlink, snapshot->id);
92b49822
JP		 5448 kfree(snapshot);
5449}
5450
d8db7ea5
AV		 5451static int devlink_nl_cmd_region_get_doit(struct sk_buff *skb,
5452 struct genl_info *info)
5453{
5454 struct devlink *devlink = info->user_ptr[0];
544e7c33 5455 struct devlink_port *port = NULL;
d8db7ea5
AV		 5456 struct devlink_region *region;
5457 const char *region_name;
5458 struct sk_buff *msg;
544e7c33 5459 unsigned int index;
d8db7ea5
AV		 5460 int err;
5461
5462 if (!info->attrs[DEVLINK_ATTR_REGION_NAME])
5463 return -EINVAL;
5464
544e7c33
AL		 5465 if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
5466 index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
5467
5468 port = devlink_port_get_by_index(devlink, index);
5469 if (!port)
5470 return -ENODEV;
5471 }
5472
d8db7ea5 5473 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
544e7c33
AL		 5474 if (port)
5475 region = devlink_port_region_get_by_name(port, region_name);
5476 else
5477 region = devlink_region_get_by_name(devlink, region_name);
5478
d8db7ea5
AV		 5479 if (!region)
5480 return -EINVAL;
5481
5482 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5483 if (!msg)
5484 return -ENOMEM;
5485
5486 err = devlink_nl_region_fill(msg, devlink, DEVLINK_CMD_REGION_GET,
5487 info->snd_portid, info->snd_seq, 0,
5488 region);
5489 if (err) {
5490 nlmsg_free(msg);
5491 return err;
5492 }
5493
5494 return genlmsg_reply(msg, info);
5495}
5496
544e7c33
AL		 5497static int devlink_nl_cmd_region_get_port_dumpit(struct sk_buff *msg,
5498 struct netlink_callback *cb,
5499 struct devlink_port *port,
5500 int *idx,
5501 int start)
5502{
5503 struct devlink_region *region;
5504 int err = 0;
5505
5506 list_for_each_entry(region, &port->region_list, list) {
5507 if (*idx < start) {
5508 (*idx)++;
5509 continue;
5510 }
5511 err = devlink_nl_region_fill(msg, port->devlink,
5512 DEVLINK_CMD_REGION_GET,
5513 NETLINK_CB(cb->skb).portid,
5514 cb->nlh->nlmsg_seq,
5515 NLM_F_MULTI, region);
5516 if (err)
5517 goto out;
5518 (*idx)++;
5519 }
5520
5521out:
5522 return err;
5523}
5524
5525static int devlink_nl_cmd_region_get_devlink_dumpit(struct sk_buff *msg,
5526 struct netlink_callback *cb,
5527 struct devlink *devlink,
5528 int *idx,
5529 int start)
5530{
5531 struct devlink_region *region;
5532 struct devlink_port *port;
5533 int err = 0;
5534
5535 mutex_lock(&devlink->lock);
5536 list_for_each_entry(region, &devlink->region_list, list) {
5537 if (*idx < start) {
5538 (*idx)++;
5539 continue;
5540 }
5541 err = devlink_nl_region_fill(msg, devlink,
5542 DEVLINK_CMD_REGION_GET,
5543 NETLINK_CB(cb->skb).portid,
5544 cb->nlh->nlmsg_seq,
5545 NLM_F_MULTI, region);
5546 if (err)
5547 goto out;
5548 (*idx)++;
5549 }
5550
5551 list_for_each_entry(port, &devlink->port_list, list) {
5552 err = devlink_nl_cmd_region_get_port_dumpit(msg, cb, port, idx,
5553 start);
5554 if (err)
5555 goto out;
5556 }
5557
5558out:
5559 mutex_unlock(&devlink->lock);
5560 return err;
5561}
5562
d8db7ea5
AV		 5563static int devlink_nl_cmd_region_get_dumpit(struct sk_buff *msg,
5564 struct netlink_callback *cb)
5565{
d8db7ea5
AV		 5566 struct devlink *devlink;
5567 int start = cb->args[0];
11a861d7 5568 unsigned long index;
d8db7ea5 5569 int idx = 0;
437ebfd9 5570 int err = 0;
d8db7ea5
AV		 5571
5572 mutex_lock(&devlink_mutex);
11a861d7 5573 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
437ebfd9 5574 if (!devlink_try_get(devlink))
d8db7ea5 5575 continue;
437ebfd9
LR		 5576
5577 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
5578 goto retry;
5579
544e7c33
AL		 5580 err = devlink_nl_cmd_region_get_devlink_dumpit(msg, cb, devlink,
5581 &idx, start);
437ebfd9
LR		 5582retry:
5583 devlink_put(devlink);
544e7c33
AL		 5584 if (err)
5585 goto out;
d8db7ea5
AV		 5586 }
5587out:
5588 mutex_unlock(&devlink_mutex);
5589 cb->args[0] = idx;
5590 return msg->len;
5591}
5592
866319bb
AV		 5593static int devlink_nl_cmd_region_del(struct sk_buff *skb,
5594 struct genl_info *info)
5595{
5596 struct devlink *devlink = info->user_ptr[0];
5597 struct devlink_snapshot *snapshot;
544e7c33 5598 struct devlink_port *port = NULL;
866319bb
AV		 5599 struct devlink_region *region;
5600 const char *region_name;
544e7c33 5601 unsigned int index;
866319bb
AV		 5602 u32 snapshot_id;
5603
5604 if (!info->attrs[DEVLINK_ATTR_REGION_NAME] ||
5605 !info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID])
5606 return -EINVAL;
5607
5608 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
5609 snapshot_id = nla_get_u32(info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
5610
544e7c33
AL		 5611 if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
5612 index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
5613
5614 port = devlink_port_get_by_index(devlink, index);
5615 if (!port)
5616 return -ENODEV;
5617 }
5618
5619 if (port)
5620 region = devlink_port_region_get_by_name(port, region_name);
5621 else
5622 region = devlink_region_get_by_name(devlink, region_name);
5623
866319bb
AV		 5624 if (!region)
5625 return -EINVAL;
5626
5627 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
5628 if (!snapshot)
5629 return -EINVAL;
5630
92b49822 5631 devlink_region_snapshot_del(region, snapshot);
866319bb
AV		 5632 return 0;
5633}
5634
b9a17abf
JK		 5635static int
5636devlink_nl_cmd_region_new(struct sk_buff *skb, struct genl_info *info)
5637{
5638 struct devlink *devlink = info->user_ptr[0];
043b3e22 5639 struct devlink_snapshot *snapshot;
544e7c33 5640 struct devlink_port *port = NULL;
043b3e22 5641 struct nlattr *snapshot_id_attr;
b9a17abf
JK		 5642 struct devlink_region *region;
5643 const char *region_name;
544e7c33 5644 unsigned int index;
b9a17abf
JK		 5645 u32 snapshot_id;
5646 u8 *data;
5647 int err;
5648
5649 if (!info->attrs[DEVLINK_ATTR_REGION_NAME]) {
5650 NL_SET_ERR_MSG_MOD(info->extack, "No region name provided");
5651 return -EINVAL;
5652 }
5653
b9a17abf 5654 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
544e7c33
AL		 5655
5656 if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
5657 index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
5658
5659 port = devlink_port_get_by_index(devlink, index);
5660 if (!port)
5661 return -ENODEV;
5662 }
5663
5664 if (port)
5665 region = devlink_port_region_get_by_name(port, region_name);
5666 else
5667 region = devlink_region_get_by_name(devlink, region_name);
5668
b9a17abf
JK		 5669 if (!region) {
5670 NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not exist");
5671 return -EINVAL;
5672 }
5673
5674 if (!region->ops->snapshot) {
5675 NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not support taking an immediate snapshot");
5676 return -EOPNOTSUPP;
5677 }
5678
5679 if (region->cur_snapshots == region->max_snapshots) {
5680 NL_SET_ERR_MSG_MOD(info->extack, "The region has reached the maximum number of stored snapshots");
5681 return -ENOSPC;
5682 }
5683
043b3e22
JK		 5684 snapshot_id_attr = info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID];
5685 if (snapshot_id_attr) {
5686 snapshot_id = nla_get_u32(snapshot_id_attr);
b9a17abf 5687
043b3e22
JK		 5688 if (devlink_region_snapshot_get_by_id(region, snapshot_id)) {
5689 NL_SET_ERR_MSG_MOD(info->extack, "The requested snapshot id is already in use");
5690 return -EEXIST;
5691 }
b9a17abf 5692
043b3e22
JK		 5693 err = __devlink_snapshot_id_insert(devlink, snapshot_id);
5694 if (err)
5695 return err;
5696 } else {
5697 err = __devlink_region_snapshot_id_get(devlink, &snapshot_id);
5698 if (err) {
5699 NL_SET_ERR_MSG_MOD(info->extack, "Failed to allocate a new snapshot id");
5700 return err;
5701 }
5702 }
b9a17abf 5703
544e7c33
AL		 5704 if (port)
5705 err = region->port_ops->snapshot(port, region->port_ops,
5706 info->extack, &data);
5707 else
5708 err = region->ops->snapshot(devlink, region->ops,
5709 info->extack, &data);
b9a17abf
JK		 5710 if (err)
5711 goto err_snapshot_capture;
5712
5713 err = __devlink_region_snapshot_create(region, data, snapshot_id);
5714 if (err)
5715 goto err_snapshot_create;
5716
043b3e22
JK		 5717 if (!snapshot_id_attr) {
5718 struct sk_buff *msg;
5719
5720 snapshot = devlink_region_snapshot_get_by_id(region,
5721 snapshot_id);
5722 if (WARN_ON(!snapshot))
5723 return -EINVAL;
5724
5725 msg = devlink_nl_region_notify_build(region, snapshot,
5726 DEVLINK_CMD_REGION_NEW,
5727 info->snd_portid,
5728 info->snd_seq);
5729 err = PTR_ERR_OR_ZERO(msg);
5730 if (err)
5731 goto err_notify;
5732
5733 err = genlmsg_reply(msg, info);
5734 if (err)
5735 goto err_notify;
5736 }
5737
b9a17abf
JK		 5738 return 0;
5739
5740err_snapshot_create:
5741 region->ops->destructor(data);
5742err_snapshot_capture:
5743 __devlink_snapshot_id_decrement(devlink, snapshot_id);
5744 return err;
043b3e22
JK		 5745
5746err_notify:
5747 devlink_region_snapshot_del(region, snapshot);
5748 return err;
b9a17abf
JK		 5749}
5750
4e54795a
AV		 5751static int devlink_nl_cmd_region_read_chunk_fill(struct sk_buff *msg,
5752 struct devlink *devlink,
5753 u8 *chunk, u32 chunk_size,
5754 u64 addr)
5755{
5756 struct nlattr *chunk_attr;
5757 int err;
5758
ae0be8de 5759 chunk_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_CHUNK);
4e54795a
AV		 5760 if (!chunk_attr)
5761 return -EINVAL;
5762
5763 err = nla_put(msg, DEVLINK_ATTR_REGION_CHUNK_DATA, chunk_size, chunk);
5764 if (err)
5765 goto nla_put_failure;
5766
5767 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_CHUNK_ADDR, addr,
5768 DEVLINK_ATTR_PAD);
5769 if (err)
5770 goto nla_put_failure;
5771
5772 nla_nest_end(msg, chunk_attr);
5773 return 0;
5774
5775nla_put_failure:
5776 nla_nest_cancel(msg, chunk_attr);
5777 return err;
5778}
5779
5780#define DEVLINK_REGION_READ_CHUNK_SIZE 256
5781
5782static int devlink_nl_region_read_snapshot_fill(struct sk_buff *skb,
5783 struct devlink *devlink,
5784 struct devlink_region *region,
5785 struct nlattr **attrs,
5786 u64 start_offset,
5787 u64 end_offset,
4e54795a
AV		 5788 u64 *new_offset)
5789{
5790 struct devlink_snapshot *snapshot;
5791 u64 curr_offset = start_offset;
5792 u32 snapshot_id;
5793 int err = 0;
5794
5795 *new_offset = start_offset;
5796
5797 snapshot_id = nla_get_u32(attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
5798 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
5799 if (!snapshot)
5800 return -EINVAL;
5801
4e54795a
AV		 5802 while (curr_offset < end_offset) {
5803 u32 data_size;
5804 u8 *data;
5805
5806 if (end_offset - curr_offset < DEVLINK_REGION_READ_CHUNK_SIZE)
5807 data_size = end_offset - curr_offset;
5808 else
5809 data_size = DEVLINK_REGION_READ_CHUNK_SIZE;
5810
5811 data = &snapshot->data[curr_offset];
5812 err = devlink_nl_cmd_region_read_chunk_fill(skb, devlink,
5813 data, data_size,
5814 curr_offset);
5815 if (err)
5816 break;
5817
5818 curr_offset += data_size;
5819 }
5820 *new_offset = curr_offset;
5821
5822 return err;
5823}
5824
5825static int devlink_nl_cmd_region_read_dumpit(struct sk_buff *skb,
5826 struct netlink_callback *cb)
5827{
ee85da53 5828 const struct genl_dumpit_info *info = genl_dumpit_info(cb);
5a46b062 5829 u64 ret_offset, start_offset, end_offset = U64_MAX;
ee85da53 5830 struct nlattr **attrs = info->attrs;
544e7c33 5831 struct devlink_port *port = NULL;
4e54795a
AV		 5832 struct devlink_region *region;
5833 struct nlattr *chunks_attr;
5834 const char *region_name;
5835 struct devlink *devlink;
544e7c33 5836 unsigned int index;
4e54795a
AV		 5837 void *hdr;
5838 int err;
5839
5840 start_offset = *((u64 *)&cb->args[0]);
5841
dac7c08f 5842 mutex_lock(&devlink_mutex);
4e54795a 5843 devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
fdd41ec2
PP		 5844 if (IS_ERR(devlink)) {
5845 err = PTR_ERR(devlink);
dac7c08f 5846 goto out_dev;
fdd41ec2 5847 }
4e54795a 5848
4e54795a
AV		 5849 mutex_lock(&devlink->lock);
5850
5851 if (!attrs[DEVLINK_ATTR_REGION_NAME] ||
fdd41ec2
PP		 5852 !attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]) {
5853 err = -EINVAL;
4e54795a 5854 goto out_unlock;
fdd41ec2 5855 }
4e54795a 5856
544e7c33
AL		 5857 if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
5858 index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
5859
5860 port = devlink_port_get_by_index(devlink, index);
0d8cb946
DC		 5861 if (!port) {
5862 err = -ENODEV;
5863 goto out_unlock;
5864 }
544e7c33
AL		 5865 }
5866
4e54795a 5867 region_name = nla_data(attrs[DEVLINK_ATTR_REGION_NAME]);
544e7c33
AL		 5868
5869 if (port)
5870 region = devlink_port_region_get_by_name(port, region_name);
5871 else
5872 region = devlink_region_get_by_name(devlink, region_name);
5873
fdd41ec2
PP		 5874 if (!region) {
5875 err = -EINVAL;
4e54795a 5876 goto out_unlock;
fdd41ec2 5877 }
4e54795a 5878
5a46b062
JK		 5879 if (attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR] &&
5880 attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]) {
5881 if (!start_offset)
5882 start_offset =
5883 nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
5884
5885 end_offset = nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
5886 end_offset += nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]);
5887 }
5888
5889 if (end_offset > region->size)
5890 end_offset = region->size;
5891
d5b90e99 5892 /* return 0 if there is no further data to read */
5a46b062 5893 if (start_offset == end_offset) {
d5b90e99
JK		 5894 err = 0;
5895 goto out_unlock;
5896 }
5897
4e54795a
AV		 5898 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
5899 &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI,
5900 DEVLINK_CMD_REGION_READ);
fdd41ec2
PP		 5901 if (!hdr) {
5902 err = -EMSGSIZE;
4e54795a 5903 goto out_unlock;
fdd41ec2 5904 }
4e54795a
AV		 5905
5906 err = devlink_nl_put_handle(skb, devlink);
5907 if (err)
5908 goto nla_put_failure;
5909
6c211809
DC		 5910 if (region->port) {
5911 err = nla_put_u32(skb, DEVLINK_ATTR_PORT_INDEX,
5912 region->port->index);
5913 if (err)
544e7c33 5914 goto nla_put_failure;
6c211809 5915 }
544e7c33 5916
4e54795a
AV		 5917 err = nla_put_string(skb, DEVLINK_ATTR_REGION_NAME, region_name);
5918 if (err)
5919 goto nla_put_failure;
5920
ae0be8de 5921 chunks_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_REGION_CHUNKS);
fdd41ec2
PP		 5922 if (!chunks_attr) {
5923 err = -EMSGSIZE;
4e54795a 5924 goto nla_put_failure;
fdd41ec2 5925 }
4e54795a 5926
4e54795a
AV		 5927 err = devlink_nl_region_read_snapshot_fill(skb, devlink,
5928 region, attrs,
5929 start_offset,
5a46b062 5930 end_offset, &ret_offset);
4e54795a
AV		 5931
5932 if (err && err != -EMSGSIZE)
5933 goto nla_put_failure;
5934
5935 /* Check if there was any progress done to prevent infinite loop */
fdd41ec2
PP		 5936 if (ret_offset == start_offset) {
5937 err = -EINVAL;
4e54795a 5938 goto nla_put_failure;
fdd41ec2 5939 }
4e54795a
AV		 5940
5941 *((u64 *)&cb->args[0]) = ret_offset;
5942
5943 nla_nest_end(skb, chunks_attr);
5944 genlmsg_end(skb, hdr);
5945 mutex_unlock(&devlink->lock);
437ebfd9 5946 devlink_put(devlink);
4e54795a
AV		 5947 mutex_unlock(&devlink_mutex);
5948
5949 return skb->len;
5950
5951nla_put_failure:
5952 genlmsg_cancel(skb, hdr);
5953out_unlock:
5954 mutex_unlock(&devlink->lock);
437ebfd9 5955 devlink_put(devlink);
dac7c08f 5956out_dev:
4e54795a 5957 mutex_unlock(&devlink_mutex);
fdd41ec2 5958 return err;
4e54795a
AV		 5959}
5960
f9cf2288
JK		 5961struct devlink_info_req {
5962 struct sk_buff *msg;
5963};
5964
5965int devlink_info_driver_name_put(struct devlink_info_req *req, const char *name)
5966{
5967 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_DRIVER_NAME, name);
5968}
5969EXPORT_SYMBOL_GPL(devlink_info_driver_name_put);
5970
5971int devlink_info_serial_number_put(struct devlink_info_req *req, const char *sn)
5972{
5973 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_SERIAL_NUMBER, sn);
5974}
5975EXPORT_SYMBOL_GPL(devlink_info_serial_number_put);
5976
b5872cd0
VV		 5977int devlink_info_board_serial_number_put(struct devlink_info_req *req,
5978 const char *bsn)
5979{
5980 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_BOARD_SERIAL_NUMBER,
5981 bsn);
5982}
5983EXPORT_SYMBOL_GPL(devlink_info_board_serial_number_put);
5984
fc6fae7d
JK		 5985static int devlink_info_version_put(struct devlink_info_req *req, int attr,
5986 const char *version_name,
5987 const char *version_value)
5988{
5989 struct nlattr *nest;
5990 int err;
5991
ae0be8de 5992 nest = nla_nest_start_noflag(req->msg, attr);
fc6fae7d
JK		 5993 if (!nest)
5994 return -EMSGSIZE;
5995
5996 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_NAME,
5997 version_name);
5998 if (err)
5999 goto nla_put_failure;
6000
6001 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_VALUE,
6002 version_value);
6003 if (err)
6004 goto nla_put_failure;
6005
6006 nla_nest_end(req->msg, nest);
6007
6008 return 0;
6009
6010nla_put_failure:
6011 nla_nest_cancel(req->msg, nest);
6012 return err;
6013}
6014
6015int devlink_info_version_fixed_put(struct devlink_info_req *req,
6016 const char *version_name,
6017 const char *version_value)
6018{
6019 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_FIXED,
6020 version_name, version_value);
6021}
6022EXPORT_SYMBOL_GPL(devlink_info_version_fixed_put);
6023
6024int devlink_info_version_stored_put(struct devlink_info_req *req,
6025 const char *version_name,
6026 const char *version_value)
6027{
6028 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_STORED,
6029 version_name, version_value);
6030}
6031EXPORT_SYMBOL_GPL(devlink_info_version_stored_put);
6032
6033int devlink_info_version_running_put(struct devlink_info_req *req,
6034 const char *version_name,
6035 const char *version_value)
6036{
6037 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_RUNNING,
6038 version_name, version_value);
6039}
6040EXPORT_SYMBOL_GPL(devlink_info_version_running_put);
6041
f9cf2288
JK		 6042static int
6043devlink_nl_info_fill(struct sk_buff *msg, struct devlink *devlink,
6044 enum devlink_command cmd, u32 portid,
6045 u32 seq, int flags, struct netlink_ext_ack *extack)
6046{
6047 struct devlink_info_req req;
6048 void *hdr;
6049 int err;
6050
6051 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
6052 if (!hdr)
6053 return -EMSGSIZE;
6054
6055 err = -EMSGSIZE;
6056 if (devlink_nl_put_handle(msg, devlink))
6057 goto err_cancel_msg;
6058
6059 req.msg = msg;
6060 err = devlink->ops->info_get(devlink, &req, extack);
6061 if (err)
6062 goto err_cancel_msg;
6063
6064 genlmsg_end(msg, hdr);
6065 return 0;
6066
6067err_cancel_msg:
6068 genlmsg_cancel(msg, hdr);
6069 return err;
6070}
6071
6072static int devlink_nl_cmd_info_get_doit(struct sk_buff *skb,
6073 struct genl_info *info)
6074{
6075 struct devlink *devlink = info->user_ptr[0];
6076 struct sk_buff *msg;
6077 int err;
6078
be6fe1d8 6079 if (!devlink->ops->info_get)
f9cf2288
JK		 6080 return -EOPNOTSUPP;
6081
6082 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6083 if (!msg)
6084 return -ENOMEM;
6085
6086 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
6087 info->snd_portid, info->snd_seq, 0,
6088 info->extack);
6089 if (err) {
6090 nlmsg_free(msg);
6091 return err;
6092 }
6093
6094 return genlmsg_reply(msg, info);
6095}
6096
6097static int devlink_nl_cmd_info_get_dumpit(struct sk_buff *msg,
6098 struct netlink_callback *cb)
6099{
6100 struct devlink *devlink;
6101 int start = cb->args[0];
11a861d7 6102 unsigned long index;
f9cf2288 6103 int idx = 0;
c62c2cfb 6104 int err = 0;
f9cf2288
JK		 6105
6106 mutex_lock(&devlink_mutex);
11a861d7 6107 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
437ebfd9 6108 if (!devlink_try_get(devlink))
f9cf2288 6109 continue;
f9cf2288 6110
437ebfd9
LR		 6111 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
6112 goto retry;
6113
6114 if (idx < start || !devlink->ops->info_get)
6115 goto inc;
c493b09b 6116
f9cf2288
JK		 6117 mutex_lock(&devlink->lock);
6118 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
6119 NETLINK_CB(cb->skb).portid,
6120 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6121 cb->extack);
6122 mutex_unlock(&devlink->lock);
82274d07
JK		 6123 if (err == -EOPNOTSUPP)
6124 err = 0;
437ebfd9
LR		 6125 else if (err) {
6126 devlink_put(devlink);
f9cf2288 6127 break;
437ebfd9
LR		 6128 }
6129inc:
f9cf2288 6130 idx++;
437ebfd9
LR		 6131retry:
6132 devlink_put(devlink);
f9cf2288
JK		 6133 }
6134 mutex_unlock(&devlink_mutex);
6135
c62c2cfb
JP		 6136 if (err != -EMSGSIZE)
6137 return err;
6138
f9cf2288
JK		 6139 cb->args[0] = idx;
6140 return msg->len;
6141}
6142
1db64e87
EBE		 6143struct devlink_fmsg_item {
6144 struct list_head list;
6145 int attrtype;
6146 u8 nla_type;
6147 u16 len;
d2afb41a 6148 int value[];
1db64e87
EBE		 6149};
6150
6151struct devlink_fmsg {
6152 struct list_head item_list;
573ed90a
AL		 6153 bool putting_binary; /* This flag forces enclosing of binary data
6154 * in an array brackets. It forces using
6155 * of designated API:
6156 * devlink_fmsg_binary_pair_nest_start()
6157 * devlink_fmsg_binary_pair_nest_end()
6158 */
1db64e87
EBE		 6159};
6160
6161static struct devlink_fmsg *devlink_fmsg_alloc(void)
6162{
6163 struct devlink_fmsg *fmsg;
6164
6165 fmsg = kzalloc(sizeof(*fmsg), GFP_KERNEL);
6166 if (!fmsg)
6167 return NULL;
6168
6169 INIT_LIST_HEAD(&fmsg->item_list);
6170
6171 return fmsg;
6172}
6173
6174static void devlink_fmsg_free(struct devlink_fmsg *fmsg)
6175{
6176 struct devlink_fmsg_item *item, *tmp;
6177
6178 list_for_each_entry_safe(item, tmp, &fmsg->item_list, list) {
6179 list_del(&item->list);
6180 kfree(item);
6181 }
6182 kfree(fmsg);
6183}
6184
6185static int devlink_fmsg_nest_common(struct devlink_fmsg *fmsg,
6186 int attrtype)
6187{
6188 struct devlink_fmsg_item *item;
6189
6190 item = kzalloc(sizeof(*item), GFP_KERNEL);
6191 if (!item)
6192 return -ENOMEM;
6193
6194 item->attrtype = attrtype;
6195 list_add_tail(&item->list, &fmsg->item_list);
6196
6197 return 0;
6198}
6199
6200int devlink_fmsg_obj_nest_start(struct devlink_fmsg *fmsg)
6201{
573ed90a
AL		 6202 if (fmsg->putting_binary)
6203 return -EINVAL;
6204
1db64e87
EBE		 6205 return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_OBJ_NEST_START);
6206}
6207EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_start);
6208
6209static int devlink_fmsg_nest_end(struct devlink_fmsg *fmsg)
6210{
573ed90a
AL		 6211 if (fmsg->putting_binary)
6212 return -EINVAL;
6213
1db64e87
EBE		 6214 return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_NEST_END);
6215}
6216
6217int devlink_fmsg_obj_nest_end(struct devlink_fmsg *fmsg)
6218{
573ed90a
AL		 6219 if (fmsg->putting_binary)
6220 return -EINVAL;
6221
1db64e87
EBE		 6222 return devlink_fmsg_nest_end(fmsg);
6223}
6224EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_end);
6225
6226#define DEVLINK_FMSG_MAX_SIZE (GENLMSG_DEFAULT_SIZE - GENL_HDRLEN - NLA_HDRLEN)
6227
6228static int devlink_fmsg_put_name(struct devlink_fmsg *fmsg, const char *name)
6229{
6230 struct devlink_fmsg_item *item;
6231
573ed90a
AL		 6232 if (fmsg->putting_binary)
6233 return -EINVAL;
6234
1db64e87
EBE		 6235 if (strlen(name) + 1 > DEVLINK_FMSG_MAX_SIZE)
6236 return -EMSGSIZE;
6237
6238 item = kzalloc(sizeof(*item) + strlen(name) + 1, GFP_KERNEL);
6239 if (!item)
6240 return -ENOMEM;
6241
6242 item->nla_type = NLA_NUL_STRING;
6243 item->len = strlen(name) + 1;
6244 item->attrtype = DEVLINK_ATTR_FMSG_OBJ_NAME;
6245 memcpy(&item->value, name, item->len);
6246 list_add_tail(&item->list, &fmsg->item_list);
6247
6248 return 0;
6249}
6250
6251int devlink_fmsg_pair_nest_start(struct devlink_fmsg *fmsg, const char *name)
6252{
6253 int err;
6254
573ed90a
AL		 6255 if (fmsg->putting_binary)
6256 return -EINVAL;
6257
1db64e87
EBE		 6258 err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_PAIR_NEST_START);
6259 if (err)
6260 return err;
6261
6262 err = devlink_fmsg_put_name(fmsg, name);
6263 if (err)
6264 return err;
6265
6266 return 0;
6267}
6268EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_start);
6269
6270int devlink_fmsg_pair_nest_end(struct devlink_fmsg *fmsg)
6271{
573ed90a
AL		 6272 if (fmsg->putting_binary)
6273 return -EINVAL;
6274
1db64e87
EBE		 6275 return devlink_fmsg_nest_end(fmsg);
6276}
6277EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_end);
6278
6279int devlink_fmsg_arr_pair_nest_start(struct devlink_fmsg *fmsg,
6280 const char *name)
6281{
6282 int err;
6283
573ed90a
AL		 6284 if (fmsg->putting_binary)
6285 return -EINVAL;
6286
1db64e87
EBE		 6287 err = devlink_fmsg_pair_nest_start(fmsg, name);
6288 if (err)
6289 return err;
6290
6291 err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_ARR_NEST_START);
6292 if (err)
6293 return err;
6294
6295 return 0;
6296}
6297EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_start);
6298
6299int devlink_fmsg_arr_pair_nest_end(struct devlink_fmsg *fmsg)
6300{
6301 int err;
6302
573ed90a
AL		 6303 if (fmsg->putting_binary)
6304 return -EINVAL;
6305
1db64e87
EBE		 6306 err = devlink_fmsg_nest_end(fmsg);
6307 if (err)
6308 return err;
6309
6310 err = devlink_fmsg_nest_end(fmsg);
6311 if (err)
6312 return err;
6313
6314 return 0;
6315}
6316EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_end);
6317
573ed90a
AL		 6318int devlink_fmsg_binary_pair_nest_start(struct devlink_fmsg *fmsg,
6319 const char *name)
6320{
6321 int err;
6322
6323 err = devlink_fmsg_arr_pair_nest_start(fmsg, name);
6324 if (err)
6325 return err;
6326
6327 fmsg->putting_binary = true;
6328 return err;
6329}
6330EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_start);
6331
6332int devlink_fmsg_binary_pair_nest_end(struct devlink_fmsg *fmsg)
6333{
6334 if (!fmsg->putting_binary)
6335 return -EINVAL;
6336
6337 fmsg->putting_binary = false;
6338 return devlink_fmsg_arr_pair_nest_end(fmsg);
6339}
6340EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_end);
6341
1db64e87
EBE		 6342static int devlink_fmsg_put_value(struct devlink_fmsg *fmsg,
6343 const void *value, u16 value_len,
6344 u8 value_nla_type)
6345{
6346 struct devlink_fmsg_item *item;
6347
6348 if (value_len > DEVLINK_FMSG_MAX_SIZE)
6349 return -EMSGSIZE;
6350
6351 item = kzalloc(sizeof(*item) + value_len, GFP_KERNEL);
6352 if (!item)
6353 return -ENOMEM;
6354
6355 item->nla_type = value_nla_type;
6356 item->len = value_len;
6357 item->attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
6358 memcpy(&item->value, value, item->len);
6359 list_add_tail(&item->list, &fmsg->item_list);
6360
6361 return 0;
6362}
6363
6db9350a 6364static int devlink_fmsg_bool_put(struct devlink_fmsg *fmsg, bool value)
1db64e87 6365{
573ed90a
AL		 6366 if (fmsg->putting_binary)
6367 return -EINVAL;
6368
1db64e87
EBE		 6369 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_FLAG);
6370}
1db64e87 6371
6db9350a 6372static int devlink_fmsg_u8_put(struct devlink_fmsg *fmsg, u8 value)
1db64e87 6373{
573ed90a
AL		 6374 if (fmsg->putting_binary)
6375 return -EINVAL;
6376
1db64e87
EBE		 6377 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U8);
6378}
1db64e87
EBE		 6379
6380int devlink_fmsg_u32_put(struct devlink_fmsg *fmsg, u32 value)
6381{
573ed90a
AL		 6382 if (fmsg->putting_binary)
6383 return -EINVAL;
6384
1db64e87
EBE		 6385 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U32);
6386}
6387EXPORT_SYMBOL_GPL(devlink_fmsg_u32_put);
6388
6db9350a 6389static int devlink_fmsg_u64_put(struct devlink_fmsg *fmsg, u64 value)
1db64e87 6390{
573ed90a
AL		 6391 if (fmsg->putting_binary)
6392 return -EINVAL;
6393
1db64e87
EBE		 6394 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U64);
6395}
1db64e87
EBE		 6396
6397int devlink_fmsg_string_put(struct devlink_fmsg *fmsg, const char *value)
6398{
573ed90a
AL		 6399 if (fmsg->putting_binary)
6400 return -EINVAL;
6401
1db64e87
EBE		 6402 return devlink_fmsg_put_value(fmsg, value, strlen(value) + 1,
6403 NLA_NUL_STRING);
6404}
6405EXPORT_SYMBOL_GPL(devlink_fmsg_string_put);
6406
573ed90a
AL		 6407int devlink_fmsg_binary_put(struct devlink_fmsg *fmsg, const void *value,
6408 u16 value_len)
1db64e87 6409{
573ed90a
AL		 6410 if (!fmsg->putting_binary)
6411 return -EINVAL;
6412
1db64e87
EBE		 6413 return devlink_fmsg_put_value(fmsg, value, value_len, NLA_BINARY);
6414}
573ed90a 6415EXPORT_SYMBOL_GPL(devlink_fmsg_binary_put);
1db64e87
EBE		 6416
6417int devlink_fmsg_bool_pair_put(struct devlink_fmsg *fmsg, const char *name,
6418 bool value)
6419{
6420 int err;
6421
6422 err = devlink_fmsg_pair_nest_start(fmsg, name);
6423 if (err)
6424 return err;
6425
6426 err = devlink_fmsg_bool_put(fmsg, value);
6427 if (err)
6428 return err;
6429
6430 err = devlink_fmsg_pair_nest_end(fmsg);
6431 if (err)
6432 return err;
6433
6434 return 0;
6435}
6436EXPORT_SYMBOL_GPL(devlink_fmsg_bool_pair_put);
6437
6438int devlink_fmsg_u8_pair_put(struct devlink_fmsg *fmsg, const char *name,
6439 u8 value)
6440{
6441 int err;
6442
6443 err = devlink_fmsg_pair_nest_start(fmsg, name);
6444 if (err)
6445 return err;
6446
6447 err = devlink_fmsg_u8_put(fmsg, value);
6448 if (err)
6449 return err;
6450
6451 err = devlink_fmsg_pair_nest_end(fmsg);
6452 if (err)
6453 return err;
6454
6455 return 0;
6456}
6457EXPORT_SYMBOL_GPL(devlink_fmsg_u8_pair_put);
6458
6459int devlink_fmsg_u32_pair_put(struct devlink_fmsg *fmsg, const char *name,
6460 u32 value)
6461{
6462 int err;
6463
6464 err = devlink_fmsg_pair_nest_start(fmsg, name);
6465 if (err)
6466 return err;
6467
6468 err = devlink_fmsg_u32_put(fmsg, value);
6469 if (err)
6470 return err;
6471
6472 err = devlink_fmsg_pair_nest_end(fmsg);
6473 if (err)
6474 return err;
6475
6476 return 0;
6477}
6478EXPORT_SYMBOL_GPL(devlink_fmsg_u32_pair_put);
6479
6480int devlink_fmsg_u64_pair_put(struct devlink_fmsg *fmsg, const char *name,
6481 u64 value)
6482{
6483 int err;
6484
6485 err = devlink_fmsg_pair_nest_start(fmsg, name);
6486 if (err)
6487 return err;
6488
6489 err = devlink_fmsg_u64_put(fmsg, value);
6490 if (err)
6491 return err;
6492
6493 err = devlink_fmsg_pair_nest_end(fmsg);
6494 if (err)
6495 return err;
6496
6497 return 0;
6498}
6499EXPORT_SYMBOL_GPL(devlink_fmsg_u64_pair_put);
6500
6501int devlink_fmsg_string_pair_put(struct devlink_fmsg *fmsg, const char *name,
6502 const char *value)
6503{
6504 int err;
6505
6506 err = devlink_fmsg_pair_nest_start(fmsg, name);
6507 if (err)
6508 return err;
6509
6510 err = devlink_fmsg_string_put(fmsg, value);
6511 if (err)
6512 return err;
6513
6514 err = devlink_fmsg_pair_nest_end(fmsg);
6515 if (err)
6516 return err;
6517
6518 return 0;
6519}
6520EXPORT_SYMBOL_GPL(devlink_fmsg_string_pair_put);
6521
6522int devlink_fmsg_binary_pair_put(struct devlink_fmsg *fmsg, const char *name,
e2cde864 6523 const void *value, u32 value_len)
1db64e87 6524{
e2cde864 6525 u32 data_size;
573ed90a 6526 int end_err;
e2cde864 6527 u32 offset;
1db64e87
EBE		 6528 int err;
6529
573ed90a 6530 err = devlink_fmsg_binary_pair_nest_start(fmsg, name);
1db64e87
EBE		 6531 if (err)
6532 return err;
6533
e2cde864
AL		 6534 for (offset = 0; offset < value_len; offset += data_size) {
6535 data_size = value_len - offset;
6536 if (data_size > DEVLINK_FMSG_MAX_SIZE)
6537 data_size = DEVLINK_FMSG_MAX_SIZE;
6538 err = devlink_fmsg_binary_put(fmsg, value + offset, data_size);
6539 if (err)
573ed90a
AL		 6540 break;
6541 /* Exit from loop with a break (instead of
6542 * return) to make sure putting_binary is turned off in
6543 * devlink_fmsg_binary_pair_nest_end
6544 */
e2cde864 6545 }
1db64e87 6546
573ed90a
AL		 6547 end_err = devlink_fmsg_binary_pair_nest_end(fmsg);
6548 if (end_err)
6549 err = end_err;
1db64e87 6550
573ed90a 6551 return err;
1db64e87
EBE		 6552}
6553EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_put);
6554
6555static int
6556devlink_fmsg_item_fill_type(struct devlink_fmsg_item *msg, struct sk_buff *skb)
6557{
6558 switch (msg->nla_type) {
6559 case NLA_FLAG:
6560 case NLA_U8:
6561 case NLA_U32:
6562 case NLA_U64:
6563 case NLA_NUL_STRING:
6564 case NLA_BINARY:
6565 return nla_put_u8(skb, DEVLINK_ATTR_FMSG_OBJ_VALUE_TYPE,
6566 msg->nla_type);
6567 default:
6568 return -EINVAL;
6569 }
6570}
6571
6572static int
6573devlink_fmsg_item_fill_data(struct devlink_fmsg_item *msg, struct sk_buff *skb)
6574{
6575 int attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
6576 u8 tmp;
6577
6578 switch (msg->nla_type) {
6579 case NLA_FLAG:
6580 /* Always provide flag data, regardless of its value */
6581 tmp = *(bool *) msg->value;
6582
6583 return nla_put_u8(skb, attrtype, tmp);
6584 case NLA_U8:
6585 return nla_put_u8(skb, attrtype, *(u8 *) msg->value);
6586 case NLA_U32:
6587 return nla_put_u32(skb, attrtype, *(u32 *) msg->value);
6588 case NLA_U64:
6589 return nla_put_u64_64bit(skb, attrtype, *(u64 *) msg->value,
6590 DEVLINK_ATTR_PAD);
6591 case NLA_NUL_STRING:
6592 return nla_put_string(skb, attrtype, (char *) &msg->value);
6593 case NLA_BINARY:
6594 return nla_put(skb, attrtype, msg->len, (void *) &msg->value);
6595 default:
6596 return -EINVAL;
6597 }
6598}
6599
6600static int
6601devlink_fmsg_prepare_skb(struct devlink_fmsg *fmsg, struct sk_buff *skb,
6602 int *start)
6603{
6604 struct devlink_fmsg_item *item;
6605 struct nlattr *fmsg_nlattr;
6606 int i = 0;
6607 int err;
6608
ae0be8de 6609 fmsg_nlattr = nla_nest_start_noflag(skb, DEVLINK_ATTR_FMSG);
1db64e87
EBE		 6610 if (!fmsg_nlattr)
6611 return -EMSGSIZE;
6612
6613 list_for_each_entry(item, &fmsg->item_list, list) {
6614 if (i < *start) {
6615 i++;
6616 continue;
6617 }
6618
6619 switch (item->attrtype) {
6620 case DEVLINK_ATTR_FMSG_OBJ_NEST_START:
6621 case DEVLINK_ATTR_FMSG_PAIR_NEST_START:
6622 case DEVLINK_ATTR_FMSG_ARR_NEST_START:
6623 case DEVLINK_ATTR_FMSG_NEST_END:
6624 err = nla_put_flag(skb, item->attrtype);
6625 break;
6626 case DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA:
6627 err = devlink_fmsg_item_fill_type(item, skb);
6628 if (err)
6629 break;
6630 err = devlink_fmsg_item_fill_data(item, skb);
6631 break;
6632 case DEVLINK_ATTR_FMSG_OBJ_NAME:
6633 err = nla_put_string(skb, item->attrtype,
6634 (char *) &item->value);
6635 break;
6636 default:
6637 err = -EINVAL;
6638 break;
6639 }
6640 if (!err)
6641 *start = ++i;
6642 else
6643 break;
6644 }
6645
6646 nla_nest_end(skb, fmsg_nlattr);
6647 return err;
6648}
6649
6650static int devlink_fmsg_snd(struct devlink_fmsg *fmsg,
6651 struct genl_info *info,
6652 enum devlink_command cmd, int flags)
6653{
6654 struct nlmsghdr *nlh;
6655 struct sk_buff *skb;
6656 bool last = false;
6657 int index = 0;
6658 void *hdr;
6659 int err;
6660
6661 while (!last) {
6662 int tmp_index = index;
6663
6664 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
6665 if (!skb)
6666 return -ENOMEM;
6667
6668 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
6669 &devlink_nl_family, flags | NLM_F_MULTI, cmd);
6670 if (!hdr) {
6671 err = -EMSGSIZE;
6672 goto nla_put_failure;
6673 }
6674
6675 err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
6676 if (!err)
6677 last = true;
6678 else if (err != -EMSGSIZE || tmp_index == index)
6679 goto nla_put_failure;
6680
6681 genlmsg_end(skb, hdr);
6682 err = genlmsg_reply(skb, info);
6683 if (err)
6684 return err;
6685 }
6686
6687 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
6688 if (!skb)
6689 return -ENOMEM;
6690 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
6691 NLMSG_DONE, 0, flags | NLM_F_MULTI);
6692 if (!nlh) {
6693 err = -EMSGSIZE;
6694 goto nla_put_failure;
6695 }
1db64e87 6696
fde55ea7 6697 return genlmsg_reply(skb, info);
1db64e87
EBE		 6698
6699nla_put_failure:
6700 nlmsg_free(skb);
6701 return err;
6702}
6703
e44ef4e4
AL		 6704static int devlink_fmsg_dumpit(struct devlink_fmsg *fmsg, struct sk_buff *skb,
6705 struct netlink_callback *cb,
6706 enum devlink_command cmd)
6707{
6708 int index = cb->args[0];
6709 int tmp_index = index;
6710 void *hdr;
6711 int err;
6712
6713 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
6714 &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI, cmd);
6715 if (!hdr) {
6716 err = -EMSGSIZE;
6717 goto nla_put_failure;
6718 }
6719
6720 err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
6721 if ((err && err != -EMSGSIZE) || tmp_index == index)
6722 goto nla_put_failure;
6723
6724 cb->args[0] = index;
6725 genlmsg_end(skb, hdr);
6726 return skb->len;
6727
6728nla_put_failure:
6729 genlmsg_cancel(skb, hdr);
6730 return err;
6731}
6732
a0bdcc59
EBE		 6733struct devlink_health_reporter {
6734 struct list_head list;
6735 void *priv;
6736 const struct devlink_health_reporter_ops *ops;
6737 struct devlink *devlink;
f4f54166 6738 struct devlink_port *devlink_port;
c8e1da0b
EBE		 6739 struct devlink_fmsg *dump_fmsg;
6740 struct mutex dump_lock; /* lock parallel read/write from dump buffers */
a0bdcc59
EBE		 6741 u64 graceful_period;
6742 bool auto_recover;
48bb52c8 6743 bool auto_dump;
a0bdcc59 6744 u8 health_state;
c8e1da0b 6745 u64 dump_ts;
d279505b 6746 u64 dump_real_ts;
c8e1da0b
EBE		 6747 u64 error_count;
6748 u64 recovery_count;
6749 u64 last_recovery_ts;
b587bdaf 6750 refcount_t refcount;
c8e1da0b
EBE		 6751};
6752
a0bdcc59
EBE		 6753void *
6754devlink_health_reporter_priv(struct devlink_health_reporter *reporter)
6755{
6756 return reporter->priv;
6757}
6758EXPORT_SYMBOL_GPL(devlink_health_reporter_priv);
6759
6760static struct devlink_health_reporter *
bd821005
VT		 6761__devlink_health_reporter_find_by_name(struct list_head *reporter_list,
6762 struct mutex *list_lock,
6763 const char *reporter_name)
a0bdcc59
EBE		 6764{
6765 struct devlink_health_reporter *reporter;
6766
bd821005
VT		 6767 lockdep_assert_held(list_lock);
6768 list_for_each_entry(reporter, reporter_list, list)
a0bdcc59
EBE		 6769 if (!strcmp(reporter->ops->name, reporter_name))
6770 return reporter;
6771 return NULL;
6772}
6773
bd821005
VT		 6774static struct devlink_health_reporter *
6775devlink_health_reporter_find_by_name(struct devlink *devlink,
6776 const char *reporter_name)
6777{
6778 return __devlink_health_reporter_find_by_name(&devlink->reporter_list,
6779 &devlink->reporters_lock,
6780 reporter_name);
6781}
6782
f4f54166
VT		 6783static struct devlink_health_reporter *
6784devlink_port_health_reporter_find_by_name(struct devlink_port *devlink_port,
6785 const char *reporter_name)
6786{
6787 return __devlink_health_reporter_find_by_name(&devlink_port->reporter_list,
6788 &devlink_port->reporters_lock,
6789 reporter_name);
6790}
6791
c57544b3
VT		 6792static struct devlink_health_reporter *
6793__devlink_health_reporter_create(struct devlink *devlink,
6794 const struct devlink_health_reporter_ops *ops,
6795 u64 graceful_period, void *priv)
6796{
6797 struct devlink_health_reporter *reporter;
6798
6799 if (WARN_ON(graceful_period && !ops->recover))
6800 return ERR_PTR(-EINVAL);
6801
6802 reporter = kzalloc(sizeof(*reporter), GFP_KERNEL);
6803 if (!reporter)
6804 return ERR_PTR(-ENOMEM);
6805
6806 reporter->priv = priv;
6807 reporter->ops = ops;
6808 reporter->devlink = devlink;
6809 reporter->graceful_period = graceful_period;
6810 reporter->auto_recover = !!ops->recover;
6811 reporter->auto_dump = !!ops->dump;
6812 mutex_init(&reporter->dump_lock);
6813 refcount_set(&reporter->refcount, 1);
6814 return reporter;
6815}
6816
15c724b9
VT		 6817/**
6818 * devlink_port_health_reporter_create - create devlink health reporter for
6819 * specified port instance
6820 *
6821 * @port: devlink_port which should contain the new reporter
6822 * @ops: ops
6823 * @graceful_period: to avoid recovery loops, in msecs
6824 * @priv: priv
6825 */
6826struct devlink_health_reporter *
6827devlink_port_health_reporter_create(struct devlink_port *port,
6828 const struct devlink_health_reporter_ops *ops,
6829 u64 graceful_period, void *priv)
6830{
6831 struct devlink_health_reporter *reporter;
6832
6833 mutex_lock(&port->reporters_lock);
6834 if (__devlink_health_reporter_find_by_name(&port->reporter_list,
6835 &port->reporters_lock, ops->name)) {
6836 reporter = ERR_PTR(-EEXIST);
6837 goto unlock;
6838 }
6839
6840 reporter = __devlink_health_reporter_create(port->devlink, ops,
6841 graceful_period, priv);
6842 if (IS_ERR(reporter))
6843 goto unlock;
6844
6845 reporter->devlink_port = port;
6846 list_add_tail(&reporter->list, &port->reporter_list);
6847unlock:
6848 mutex_unlock(&port->reporters_lock);
6849 return reporter;
6850}
6851EXPORT_SYMBOL_GPL(devlink_port_health_reporter_create);
6852
a0bdcc59
EBE		 6853/**
6854 * devlink_health_reporter_create - create devlink health reporter
6855 *
6856 * @devlink: devlink
6857 * @ops: ops
6858 * @graceful_period: to avoid recovery loops, in msecs
a0bdcc59
EBE		 6859 * @priv: priv
6860 */
6861struct devlink_health_reporter *
6862devlink_health_reporter_create(struct devlink *devlink,
6863 const struct devlink_health_reporter_ops *ops,
ba7d16c7 6864 u64 graceful_period, void *priv)
a0bdcc59
EBE		 6865{
6866 struct devlink_health_reporter *reporter;
6867
b587bdaf 6868 mutex_lock(&devlink->reporters_lock);
a0bdcc59
EBE		 6869 if (devlink_health_reporter_find_by_name(devlink, ops->name)) {
6870 reporter = ERR_PTR(-EEXIST);
6871 goto unlock;
6872 }
6873
c57544b3
VT		 6874 reporter = __devlink_health_reporter_create(devlink, ops,
6875 graceful_period, priv);
6876 if (IS_ERR(reporter))
a0bdcc59 6877 goto unlock;
a0bdcc59 6878
a0bdcc59
EBE		 6879 list_add_tail(&reporter->list, &devlink->reporter_list);
6880unlock:
b587bdaf 6881 mutex_unlock(&devlink->reporters_lock);
a0bdcc59
EBE		 6882 return reporter;
6883}
6884EXPORT_SYMBOL_GPL(devlink_health_reporter_create);
6885
3c5584bf
VT		 6886static void
6887devlink_health_reporter_free(struct devlink_health_reporter *reporter)
6888{
6889 mutex_destroy(&reporter->dump_lock);
6890 if (reporter->dump_fmsg)
6891 devlink_fmsg_free(reporter->dump_fmsg);
6892 kfree(reporter);
6893}
6894
6895static void
6896devlink_health_reporter_put(struct devlink_health_reporter *reporter)
6897{
6898 if (refcount_dec_and_test(&reporter->refcount))
6899 devlink_health_reporter_free(reporter);
6900}
6901
6902static void
6903__devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
6904{
6905 list_del(&reporter->list);
6906 devlink_health_reporter_put(reporter);
6907}
6908
a0bdcc59
EBE		 6909/**
6910 * devlink_health_reporter_destroy - destroy devlink health reporter
6911 *
6912 * @reporter: devlink health reporter to destroy
6913 */
6914void
6915devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
6916{
5d037b4d
IS		 6917 struct mutex *lock = &reporter->devlink->reporters_lock;
6918
6919 mutex_lock(lock);
3c5584bf 6920 __devlink_health_reporter_destroy(reporter);
5d037b4d 6921 mutex_unlock(lock);
a0bdcc59
EBE		 6922}
6923EXPORT_SYMBOL_GPL(devlink_health_reporter_destroy);
6924
15c724b9
VT		 6925/**
6926 * devlink_port_health_reporter_destroy - destroy devlink port health reporter
6927 *
6928 * @reporter: devlink health reporter to destroy
6929 */
6930void
6931devlink_port_health_reporter_destroy(struct devlink_health_reporter *reporter)
6932{
5d037b4d
IS		 6933 struct mutex *lock = &reporter->devlink_port->reporters_lock;
6934
6935 mutex_lock(lock);
15c724b9 6936 __devlink_health_reporter_destroy(reporter);
5d037b4d 6937 mutex_unlock(lock);
15c724b9
VT		 6938}
6939EXPORT_SYMBOL_GPL(devlink_port_health_reporter_destroy);
6940
6ec8b6cd
MS		 6941static int
6942devlink_nl_health_reporter_fill(struct sk_buff *msg,
6ec8b6cd
MS		 6943 struct devlink_health_reporter *reporter,
6944 enum devlink_command cmd, u32 portid,
6945 u32 seq, int flags)
6946{
7ca973dc 6947 struct devlink *devlink = reporter->devlink;
6ec8b6cd
MS		 6948 struct nlattr *reporter_attr;
6949 void *hdr;
6950
6951 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
6952 if (!hdr)
6953 return -EMSGSIZE;
6954
6955 if (devlink_nl_put_handle(msg, devlink))
6956 goto genlmsg_cancel;
6957
f4f54166
VT		 6958 if (reporter->devlink_port) {
6959 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, reporter->devlink_port->index))
6960 goto genlmsg_cancel;
6961 }
6ec8b6cd
MS		 6962 reporter_attr = nla_nest_start_noflag(msg,
6963 DEVLINK_ATTR_HEALTH_REPORTER);
6964 if (!reporter_attr)
6965 goto genlmsg_cancel;
6966 if (nla_put_string(msg, DEVLINK_ATTR_HEALTH_REPORTER_NAME,
6967 reporter->ops->name))
6968 goto reporter_nest_cancel;
6969 if (nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_STATE,
6970 reporter->health_state))
6971 goto reporter_nest_cancel;
6972 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_ERR_COUNT,
6973 reporter->error_count, DEVLINK_ATTR_PAD))
6974 goto reporter_nest_cancel;
6975 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_RECOVER_COUNT,
6976 reporter->recovery_count, DEVLINK_ATTR_PAD))
6977 goto reporter_nest_cancel;
6978 if (reporter->ops->recover &&
6979 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD,
6980 reporter->graceful_period,
6981 DEVLINK_ATTR_PAD))
6982 goto reporter_nest_cancel;
6983 if (reporter->ops->recover &&
6984 nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER,
6985 reporter->auto_recover))
6986 goto reporter_nest_cancel;
6987 if (reporter->dump_fmsg &&
6988 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS,
6989 jiffies_to_msecs(reporter->dump_ts),
6990 DEVLINK_ATTR_PAD))
6991 goto reporter_nest_cancel;
6992 if (reporter->dump_fmsg &&
6993 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS_NS,
6994 reporter->dump_real_ts, DEVLINK_ATTR_PAD))
6995 goto reporter_nest_cancel;
48bb52c8
EBE		 6996 if (reporter->ops->dump &&
6997 nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP,
6998 reporter->auto_dump))
6999 goto reporter_nest_cancel;
6ec8b6cd
MS		 7000
7001 nla_nest_end(msg, reporter_attr);
7002 genlmsg_end(msg, hdr);
7003 return 0;
7004
7005reporter_nest_cancel:
7006 nla_nest_end(msg, reporter_attr);
7007genlmsg_cancel:
7008 genlmsg_cancel(msg, hdr);
7009 return -EMSGSIZE;
7010}
7011
7012static void devlink_recover_notify(struct devlink_health_reporter *reporter,
7013 enum devlink_command cmd)
7014{
cf530217 7015 struct devlink *devlink = reporter->devlink;
6ec8b6cd
MS		 7016 struct sk_buff *msg;
7017 int err;
7018
7019 WARN_ON(cmd != DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
cf530217 7020 WARN_ON(!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED));
6ec8b6cd
MS		 7021
7022 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7023 if (!msg)
7024 return;
7025
7ca973dc 7026 err = devlink_nl_health_reporter_fill(msg, reporter, cmd, 0, 0, 0);
6ec8b6cd
MS		 7027 if (err) {
7028 nlmsg_free(msg);
7029 return;
7030 }
7031
cf530217
LR		 7032 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
7033 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
6ec8b6cd
MS		 7034}
7035
6181e5cb
VG		 7036void
7037devlink_health_reporter_recovery_done(struct devlink_health_reporter *reporter)
7038{
7039 reporter->recovery_count++;
7040 reporter->last_recovery_ts = jiffies;
7041}
7042EXPORT_SYMBOL_GPL(devlink_health_reporter_recovery_done);
7043
c8e1da0b
EBE		 7044static int
7045devlink_health_reporter_recover(struct devlink_health_reporter *reporter,
e7a98105 7046 void *priv_ctx, struct netlink_ext_ack *extack)
c8e1da0b
EBE		 7047{
7048 int err;
7049
40281820
JP		 7050 if (reporter->health_state == DEVLINK_HEALTH_REPORTER_STATE_HEALTHY)
7051 return 0;
7052
c8e1da0b
EBE		 7053 if (!reporter->ops->recover)
7054 return -EOPNOTSUPP;
7055
e7a98105 7056 err = reporter->ops->recover(reporter, priv_ctx, extack);
c8e1da0b
EBE		 7057 if (err)
7058 return err;
7059
6181e5cb 7060 devlink_health_reporter_recovery_done(reporter);
c8e1da0b 7061 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_HEALTHY;
6ec8b6cd 7062 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
c8e1da0b
EBE		 7063
7064 return 0;
7065}
7066
7067static void
7068devlink_health_dump_clear(struct devlink_health_reporter *reporter)
7069{
7070 if (!reporter->dump_fmsg)
7071 return;
7072 devlink_fmsg_free(reporter->dump_fmsg);
7073 reporter->dump_fmsg = NULL;
7074}
7075
7076static int devlink_health_do_dump(struct devlink_health_reporter *reporter,
e7a98105
JP		 7077 void *priv_ctx,
7078 struct netlink_ext_ack *extack)
c8e1da0b
EBE		 7079{
7080 int err;
7081
7082 if (!reporter->ops->dump)
7083 return 0;
7084
7085 if (reporter->dump_fmsg)
7086 return 0;
7087
7088 reporter->dump_fmsg = devlink_fmsg_alloc();
7089 if (!reporter->dump_fmsg) {
7090 err = -ENOMEM;
7091 return err;
7092 }
7093
7094 err = devlink_fmsg_obj_nest_start(reporter->dump_fmsg);
7095 if (err)
7096 goto dump_err;
7097
7098 err = reporter->ops->dump(reporter, reporter->dump_fmsg,
e7a98105 7099 priv_ctx, extack);
c8e1da0b
EBE		 7100 if (err)
7101 goto dump_err;
7102
7103 err = devlink_fmsg_obj_nest_end(reporter->dump_fmsg);
7104 if (err)
7105 goto dump_err;
7106
7107 reporter->dump_ts = jiffies;
d279505b 7108 reporter->dump_real_ts = ktime_get_real_ns();
c8e1da0b
EBE		 7109
7110 return 0;
7111
7112dump_err:
7113 devlink_health_dump_clear(reporter);
7114 return err;
7115}
7116
7117int devlink_health_report(struct devlink_health_reporter *reporter,
7118 const char *msg, void *priv_ctx)
7119{
a0a21adb 7120 enum devlink_health_reporter_state prev_health_state;
c8e1da0b 7121 struct devlink *devlink = reporter->devlink;
bea0c5c9 7122 unsigned long recover_ts_threshold;
c8e1da0b
EBE		 7123
7124 /* write a log message of the current error */
7125 WARN_ON(!msg);
7126 trace_devlink_health_report(devlink, reporter->ops->name, msg);
7127 reporter->error_count++;
a0a21adb
EBE		 7128 prev_health_state = reporter->health_state;
7129 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
6ec8b6cd 7130 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
c8e1da0b
EBE		 7131
7132 /* abort if the previous error wasn't recovered */
bea0c5c9
AL		 7133 recover_ts_threshold = reporter->last_recovery_ts +
7134 msecs_to_jiffies(reporter->graceful_period);
c8e1da0b 7135 if (reporter->auto_recover &&
a0a21adb 7136 (prev_health_state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY ||
bea0c5c9
AL		 7137 (reporter->last_recovery_ts && reporter->recovery_count &&
7138 time_is_after_jiffies(recover_ts_threshold)))) {
c8e1da0b
EBE		 7139 trace_devlink_health_recover_aborted(devlink,
7140 reporter->ops->name,
7141 reporter->health_state,
7142 jiffies -
7143 reporter->last_recovery_ts);
7144 return -ECANCELED;
7145 }
7146
7147 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
7148
48bb52c8
EBE		 7149 if (reporter->auto_dump) {
7150 mutex_lock(&reporter->dump_lock);
7151 /* store current dump of current error, for later analysis */
7152 devlink_health_do_dump(reporter, priv_ctx, NULL);
7153 mutex_unlock(&reporter->dump_lock);
7154 }
c8e1da0b
EBE		 7155
7156 if (reporter->auto_recover)
e7a98105
JP		 7157 return devlink_health_reporter_recover(reporter,
7158 priv_ctx, NULL);
c8e1da0b
EBE		 7159
7160 return 0;
7161}
7162EXPORT_SYMBOL_GPL(devlink_health_report);
7163
7afe335a 7164static struct devlink_health_reporter *
e44ef4e4
AL		 7165devlink_health_reporter_get_from_attrs(struct devlink *devlink,
7166 struct nlattr **attrs)
7afe335a 7167{
b587bdaf 7168 struct devlink_health_reporter *reporter;
f4f54166 7169 struct devlink_port *devlink_port;
7afe335a
EBE		 7170 char *reporter_name;
7171
e44ef4e4 7172 if (!attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME])
7afe335a
EBE		 7173 return NULL;
7174
e44ef4e4 7175 reporter_name = nla_data(attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME]);
f4f54166
VT		 7176 devlink_port = devlink_port_get_from_attrs(devlink, attrs);
7177 if (IS_ERR(devlink_port)) {
7178 mutex_lock(&devlink->reporters_lock);
7179 reporter = devlink_health_reporter_find_by_name(devlink, reporter_name);
7180 if (reporter)
7181 refcount_inc(&reporter->refcount);
7182 mutex_unlock(&devlink->reporters_lock);
7183 } else {
7184 mutex_lock(&devlink_port->reporters_lock);
7185 reporter = devlink_port_health_reporter_find_by_name(devlink_port, reporter_name);
7186 if (reporter)
7187 refcount_inc(&reporter->refcount);
7188 mutex_unlock(&devlink_port->reporters_lock);
7189 }
7190
b587bdaf
MS		 7191 return reporter;
7192}
7193
e44ef4e4
AL		 7194static struct devlink_health_reporter *
7195devlink_health_reporter_get_from_info(struct devlink *devlink,
7196 struct genl_info *info)
7197{
7198 return devlink_health_reporter_get_from_attrs(devlink, info->attrs);
7199}
7200
7201static struct devlink_health_reporter *
7202devlink_health_reporter_get_from_cb(struct netlink_callback *cb)
7203{
ee85da53 7204 const struct genl_dumpit_info *info = genl_dumpit_info(cb);
e44ef4e4 7205 struct devlink_health_reporter *reporter;
ee85da53 7206 struct nlattr **attrs = info->attrs;
e44ef4e4 7207 struct devlink *devlink;
e44ef4e4
AL		 7208
7209 mutex_lock(&devlink_mutex);
7210 devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
7211 if (IS_ERR(devlink))
7212 goto unlock;
7213
7214 reporter = devlink_health_reporter_get_from_attrs(devlink, attrs);
437ebfd9 7215 devlink_put(devlink);
e44ef4e4 7216 mutex_unlock(&devlink_mutex);
e44ef4e4
AL		 7217 return reporter;
7218unlock:
7219 mutex_unlock(&devlink_mutex);
e44ef4e4
AL		 7220 return NULL;
7221}
7222
97ff3bd3
VG		 7223void
7224devlink_health_reporter_state_update(struct devlink_health_reporter *reporter,
7225 enum devlink_health_reporter_state state)
7226{
7227 if (WARN_ON(state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY &&
7228 state != DEVLINK_HEALTH_REPORTER_STATE_ERROR))
7229 return;
7230
7231 if (reporter->health_state == state)
7232 return;
7233
7234 reporter->health_state = state;
7235 trace_devlink_health_reporter_state_update(reporter->devlink,
7236 reporter->ops->name, state);
7237 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
7238}
7239EXPORT_SYMBOL_GPL(devlink_health_reporter_state_update);
7240
7afe335a
EBE		 7241static int devlink_nl_cmd_health_reporter_get_doit(struct sk_buff *skb,
7242 struct genl_info *info)
7243{
7244 struct devlink *devlink = info->user_ptr[0];
7245 struct devlink_health_reporter *reporter;
7246 struct sk_buff *msg;
7247 int err;
7248
7249 reporter = devlink_health_reporter_get_from_info(devlink, info);
7250 if (!reporter)
7251 return -EINVAL;
7252
7253 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
b587bdaf
MS		 7254 if (!msg) {
7255 err = -ENOMEM;
7256 goto out;
7257 }
7afe335a 7258
7ca973dc 7259 err = devlink_nl_health_reporter_fill(msg, reporter,
7afe335a
EBE		 7260 DEVLINK_CMD_HEALTH_REPORTER_GET,
7261 info->snd_portid, info->snd_seq,
7262 0);
7263 if (err) {
7264 nlmsg_free(msg);
b587bdaf 7265 goto out;
7afe335a
EBE		 7266 }
7267
b587bdaf
MS		 7268 err = genlmsg_reply(msg, info);
7269out:
7270 devlink_health_reporter_put(reporter);
7271 return err;
7afe335a
EBE		 7272}
7273
7274static int
7275devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg,
7276 struct netlink_callback *cb)
7277{
7278 struct devlink_health_reporter *reporter;
f4f54166 7279 struct devlink_port *port;
7afe335a
EBE		 7280 struct devlink *devlink;
7281 int start = cb->args[0];
11a861d7 7282 unsigned long index;
7afe335a
EBE		 7283 int idx = 0;
7284 int err;
7285
7286 mutex_lock(&devlink_mutex);
11a861d7 7287 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
437ebfd9 7288 if (!devlink_try_get(devlink))
7afe335a 7289 continue;
437ebfd9
LR		 7290
7291 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
7292 goto retry_rep;
7293
b587bdaf 7294 mutex_lock(&devlink->reporters_lock);
7afe335a
EBE		 7295 list_for_each_entry(reporter, &devlink->reporter_list,
7296 list) {
7297 if (idx < start) {
7298 idx++;
7299 continue;
7300 }
7ca973dc
LR		 7301 err = devlink_nl_health_reporter_fill(
7302 msg, reporter, DEVLINK_CMD_HEALTH_REPORTER_GET,
7303 NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
7304 NLM_F_MULTI);
7afe335a 7305 if (err) {
b587bdaf 7306 mutex_unlock(&devlink->reporters_lock);
437ebfd9 7307 devlink_put(devlink);
7afe335a
EBE		 7308 goto out;
7309 }
7310 idx++;
7311 }
b587bdaf 7312 mutex_unlock(&devlink->reporters_lock);
437ebfd9
LR		 7313retry_rep:
7314 devlink_put(devlink);
7afe335a 7315 }
f4f54166 7316
11a861d7 7317 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
437ebfd9 7318 if (!devlink_try_get(devlink))
f4f54166 7319 continue;
437ebfd9
LR		 7320
7321 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
7322 goto retry_port;
7323
5d080b50 7324 mutex_lock(&devlink->lock);
f4f54166
VT		 7325 list_for_each_entry(port, &devlink->port_list, list) {
7326 mutex_lock(&port->reporters_lock);
7327 list_for_each_entry(reporter, &port->reporter_list, list) {
7328 if (idx < start) {
7329 idx++;
7330 continue;
7331 }
7ca973dc
LR		 7332 err = devlink_nl_health_reporter_fill(
7333 msg, reporter,
7334 DEVLINK_CMD_HEALTH_REPORTER_GET,
7335 NETLINK_CB(cb->skb).portid,
7336 cb->nlh->nlmsg_seq, NLM_F_MULTI);
f4f54166
VT		 7337 if (err) {
7338 mutex_unlock(&port->reporters_lock);
5d080b50 7339 mutex_unlock(&devlink->lock);
437ebfd9 7340 devlink_put(devlink);
f4f54166
VT		 7341 goto out;
7342 }
7343 idx++;
7344 }
7345 mutex_unlock(&port->reporters_lock);
7346 }
5d080b50 7347 mutex_unlock(&devlink->lock);
437ebfd9
LR		 7348retry_port:
7349 devlink_put(devlink);
f4f54166 7350 }
7afe335a
EBE		 7351out:
7352 mutex_unlock(&devlink_mutex);
7353
7354 cb->args[0] = idx;
7355 return msg->len;
7356}
7357
a1e55ec0
EBE		 7358static int
7359devlink_nl_cmd_health_reporter_set_doit(struct sk_buff *skb,
7360 struct genl_info *info)
7361{
7362 struct devlink *devlink = info->user_ptr[0];
7363 struct devlink_health_reporter *reporter;
b587bdaf 7364 int err;
a1e55ec0
EBE		 7365
7366 reporter = devlink_health_reporter_get_from_info(devlink, info);
7367 if (!reporter)
7368 return -EINVAL;
7369
7370 if (!reporter->ops->recover &&
7371 (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] ||
b587bdaf
MS		 7372 info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])) {
7373 err = -EOPNOTSUPP;
7374 goto out;
7375 }
48bb52c8
EBE		 7376 if (!reporter->ops->dump &&
7377 info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]) {
7378 err = -EOPNOTSUPP;
7379 goto out;
7380 }
a1e55ec0
EBE		 7381
7382 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD])
7383 reporter->graceful_period =
7384 nla_get_u64(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD]);
7385
7386 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])
7387 reporter->auto_recover =
7388 nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER]);
7389
48bb52c8
EBE		 7390 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP])
7391 reporter->auto_dump =
7392 nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]);
7393
b587bdaf 7394 devlink_health_reporter_put(reporter);
a1e55ec0 7395 return 0;
b587bdaf
MS		 7396out:
7397 devlink_health_reporter_put(reporter);
7398 return err;
a1e55ec0
EBE		 7399}
7400
20a0943a
EBE		 7401static int devlink_nl_cmd_health_reporter_recover_doit(struct sk_buff *skb,
7402 struct genl_info *info)
7403{
7404 struct devlink *devlink = info->user_ptr[0];
7405 struct devlink_health_reporter *reporter;
b587bdaf 7406 int err;
20a0943a
EBE		 7407
7408 reporter = devlink_health_reporter_get_from_info(devlink, info);
7409 if (!reporter)
7410 return -EINVAL;
7411
e7a98105 7412 err = devlink_health_reporter_recover(reporter, NULL, info->extack);
b587bdaf
MS		 7413
7414 devlink_health_reporter_put(reporter);
7415 return err;
20a0943a
EBE		 7416}
7417
fca42a27
EBE		 7418static int devlink_nl_cmd_health_reporter_diagnose_doit(struct sk_buff *skb,
7419 struct genl_info *info)
7420{
7421 struct devlink *devlink = info->user_ptr[0];
7422 struct devlink_health_reporter *reporter;
7423 struct devlink_fmsg *fmsg;
7424 int err;
7425
7426 reporter = devlink_health_reporter_get_from_info(devlink, info);
7427 if (!reporter)
7428 return -EINVAL;
7429
b587bdaf
MS		 7430 if (!reporter->ops->diagnose) {
7431 devlink_health_reporter_put(reporter);
fca42a27 7432 return -EOPNOTSUPP;
b587bdaf 7433 }
fca42a27
EBE		 7434
7435 fmsg = devlink_fmsg_alloc();
b587bdaf
MS		 7436 if (!fmsg) {
7437 devlink_health_reporter_put(reporter);
fca42a27 7438 return -ENOMEM;
b587bdaf 7439 }
fca42a27
EBE		 7440
7441 err = devlink_fmsg_obj_nest_start(fmsg);
7442 if (err)
7443 goto out;
7444
e7a98105 7445 err = reporter->ops->diagnose(reporter, fmsg, info->extack);
fca42a27
EBE		 7446 if (err)
7447 goto out;
7448
7449 err = devlink_fmsg_obj_nest_end(fmsg);
7450 if (err)
7451 goto out;
7452
7453 err = devlink_fmsg_snd(fmsg, info,
7454 DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE, 0);
7455
7456out:
7457 devlink_fmsg_free(fmsg);
b587bdaf 7458 devlink_health_reporter_put(reporter);
fca42a27
EBE		 7459 return err;
7460}
7461
e44ef4e4
AL		 7462static int
7463devlink_nl_cmd_health_reporter_dump_get_dumpit(struct sk_buff *skb,
7464 struct netlink_callback *cb)
35455e23 7465{
35455e23 7466 struct devlink_health_reporter *reporter;
e44ef4e4 7467 u64 start = cb->args[0];
35455e23
EBE		 7468 int err;
7469
e44ef4e4 7470 reporter = devlink_health_reporter_get_from_cb(cb);
35455e23
EBE		 7471 if (!reporter)
7472 return -EINVAL;
7473
b587bdaf 7474 if (!reporter->ops->dump) {
e44ef4e4
AL		 7475 err = -EOPNOTSUPP;
7476 goto out;
b587bdaf 7477 }
35455e23 7478 mutex_lock(&reporter->dump_lock);
e44ef4e4 7479 if (!start) {
e7a98105 7480 err = devlink_health_do_dump(reporter, NULL, cb->extack);
e44ef4e4
AL		 7481 if (err)
7482 goto unlock;
7483 cb->args[1] = reporter->dump_ts;
7484 }
7485 if (!reporter->dump_fmsg || cb->args[1] != reporter->dump_ts) {
7486 NL_SET_ERR_MSG_MOD(cb->extack, "Dump trampled, please retry");
7487 err = -EAGAIN;
7488 goto unlock;
7489 }
35455e23 7490
e44ef4e4
AL		 7491 err = devlink_fmsg_dumpit(reporter->dump_fmsg, skb, cb,
7492 DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET);
7493unlock:
35455e23 7494 mutex_unlock(&reporter->dump_lock);
e44ef4e4 7495out:
b587bdaf 7496 devlink_health_reporter_put(reporter);
35455e23
EBE		 7497 return err;
7498}
7499
7500static int
7501devlink_nl_cmd_health_reporter_dump_clear_doit(struct sk_buff *skb,
7502 struct genl_info *info)
7503{
7504 struct devlink *devlink = info->user_ptr[0];
7505 struct devlink_health_reporter *reporter;
7506
7507 reporter = devlink_health_reporter_get_from_info(devlink, info);
7508 if (!reporter)
7509 return -EINVAL;
7510
b587bdaf
MS		 7511 if (!reporter->ops->dump) {
7512 devlink_health_reporter_put(reporter);
35455e23 7513 return -EOPNOTSUPP;
b587bdaf 7514 }
35455e23
EBE		 7515
7516 mutex_lock(&reporter->dump_lock);
7517 devlink_health_dump_clear(reporter);
7518 mutex_unlock(&reporter->dump_lock);
b587bdaf 7519 devlink_health_reporter_put(reporter);
35455e23
EBE		 7520 return 0;
7521}
7522
e2ce94dc
JP		 7523static int devlink_nl_cmd_health_reporter_test_doit(struct sk_buff *skb,
7524 struct genl_info *info)
7525{
7526 struct devlink *devlink = info->user_ptr[0];
7527 struct devlink_health_reporter *reporter;
7528 int err;
7529
7530 reporter = devlink_health_reporter_get_from_info(devlink, info);
7531 if (!reporter)
7532 return -EINVAL;
7533
7534 if (!reporter->ops->test) {
7535 devlink_health_reporter_put(reporter);
7536 return -EOPNOTSUPP;
7537 }
7538
7539 err = reporter->ops->test(reporter, info->extack);
7540
7541 devlink_health_reporter_put(reporter);
7542 return err;
7543}
7544
0f420b6c
IS		 7545struct devlink_stats {
7546 u64 rx_bytes;
7547 u64 rx_packets;
7548 struct u64_stats_sync syncp;
7549};
7550
1e8c6619
IS		 7551/**
7552 * struct devlink_trap_policer_item - Packet trap policer attributes.
7553 * @policer: Immutable packet trap policer attributes.
7554 * @rate: Rate in packets / sec.
7555 * @burst: Burst size in packets.
7556 * @list: trap_policer_list member.
7557 *
7558 * Describes packet trap policer attributes. Created by devlink during trap
7559 * policer registration.
7560 */
7561struct devlink_trap_policer_item {
7562 const struct devlink_trap_policer *policer;
7563 u64 rate;
7564 u64 burst;
7565 struct list_head list;
7566};
7567
0f420b6c
IS		 7568/**
7569 * struct devlink_trap_group_item - Packet trap group attributes.
7570 * @group: Immutable packet trap group attributes.
f9f54392 7571 * @policer_item: Associated policer item. Can be NULL.
0f420b6c
IS		 7572 * @list: trap_group_list member.
7573 * @stats: Trap group statistics.
7574 *
7575 * Describes packet trap group attributes. Created by devlink during trap
a09b37fc 7576 * group registration.
0f420b6c
IS		 7577 */
7578struct devlink_trap_group_item {
7579 const struct devlink_trap_group *group;
f9f54392 7580 struct devlink_trap_policer_item *policer_item;
0f420b6c
IS		 7581 struct list_head list;
7582 struct devlink_stats __percpu *stats;
7583};
7584
7585/**
7586 * struct devlink_trap_item - Packet trap attributes.
7587 * @trap: Immutable packet trap attributes.
7588 * @group_item: Associated group item.
7589 * @list: trap_list member.
7590 * @action: Trap action.
7591 * @stats: Trap statistics.
7592 * @priv: Driver private information.
7593 *
7594 * Describes both mutable and immutable packet trap attributes. Created by
7595 * devlink during trap registration and used for all trap related operations.
7596 */
7597struct devlink_trap_item {
7598 const struct devlink_trap *trap;
7599 struct devlink_trap_group_item *group_item;
7600 struct list_head list;
7601 enum devlink_trap_action action;
7602 struct devlink_stats __percpu *stats;
7603 void *priv;
7604};
7605
1e8c6619
IS		 7606static struct devlink_trap_policer_item *
7607devlink_trap_policer_item_lookup(struct devlink *devlink, u32 id)
7608{
7609 struct devlink_trap_policer_item *policer_item;
7610
7611 list_for_each_entry(policer_item, &devlink->trap_policer_list, list) {
7612 if (policer_item->policer->id == id)
7613 return policer_item;
7614 }
7615
7616 return NULL;
7617}
7618
0f420b6c
IS		 7619static struct devlink_trap_item *
7620devlink_trap_item_lookup(struct devlink *devlink, const char *name)
7621{
7622 struct devlink_trap_item *trap_item;
7623
7624 list_for_each_entry(trap_item, &devlink->trap_list, list) {
7625 if (!strcmp(trap_item->trap->name, name))
7626 return trap_item;
7627 }
7628
7629 return NULL;
7630}
7631
7632static struct devlink_trap_item *
7633devlink_trap_item_get_from_info(struct devlink *devlink,
7634 struct genl_info *info)
7635{
7636 struct nlattr *attr;
7637
7638 if (!info->attrs[DEVLINK_ATTR_TRAP_NAME])
7639 return NULL;
7640 attr = info->attrs[DEVLINK_ATTR_TRAP_NAME];
7641
7642 return devlink_trap_item_lookup(devlink, nla_data(attr));
7643}
7644
7645static int
7646devlink_trap_action_get_from_info(struct genl_info *info,
7647 enum devlink_trap_action *p_trap_action)
7648{
7649 u8 val;
7650
7651 val = nla_get_u8(info->attrs[DEVLINK_ATTR_TRAP_ACTION]);
7652 switch (val) {
df561f66
GS		 7653 case DEVLINK_TRAP_ACTION_DROP:
7654 case DEVLINK_TRAP_ACTION_TRAP:
9eefeabe 7655 case DEVLINK_TRAP_ACTION_MIRROR:
0f420b6c
IS		 7656 *p_trap_action = val;
7657 break;
7658 default:
7659 return -EINVAL;
7660 }
7661
7662 return 0;
7663}
7664
7665static int devlink_trap_metadata_put(struct sk_buff *msg,
7666 const struct devlink_trap *trap)
7667{
7668 struct nlattr *attr;
7669
7670 attr = nla_nest_start(msg, DEVLINK_ATTR_TRAP_METADATA);
7671 if (!attr)
7672 return -EMSGSIZE;
7673
7674 if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_IN_PORT) &&
7675 nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_IN_PORT))
7676 goto nla_put_failure;
85b0589e
JP		 7677 if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_FA_COOKIE) &&
7678 nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_FA_COOKIE))
7679 goto nla_put_failure;
0f420b6c
IS		 7680
7681 nla_nest_end(msg, attr);
7682
7683 return 0;
7684
7685nla_put_failure:
7686 nla_nest_cancel(msg, attr);
7687 return -EMSGSIZE;
7688}
7689
7690static void devlink_trap_stats_read(struct devlink_stats __percpu *trap_stats,
7691 struct devlink_stats *stats)
7692{
7693 int i;
7694
7695 memset(stats, 0, sizeof(*stats));
7696 for_each_possible_cpu(i) {
7697 struct devlink_stats *cpu_stats;
7698 u64 rx_packets, rx_bytes;
7699 unsigned int start;
7700
7701 cpu_stats = per_cpu_ptr(trap_stats, i);
7702 do {
7703 start = u64_stats_fetch_begin_irq(&cpu_stats->syncp);
7704 rx_packets = cpu_stats->rx_packets;
7705 rx_bytes = cpu_stats->rx_bytes;
7706 } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start));
7707
7708 stats->rx_packets += rx_packets;
7709 stats->rx_bytes += rx_bytes;
7710 }
7711}
7712
ddee9dbc
OM		 7713static int
7714devlink_trap_group_stats_put(struct sk_buff *msg,
7715 struct devlink_stats __percpu *trap_stats)
0f420b6c
IS		 7716{
7717 struct devlink_stats stats;
7718 struct nlattr *attr;
7719
7720 devlink_trap_stats_read(trap_stats, &stats);
7721
7722 attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
7723 if (!attr)
7724 return -EMSGSIZE;
7725
7726 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_PACKETS,
7727 stats.rx_packets, DEVLINK_ATTR_PAD))
7728 goto nla_put_failure;
7729
7730 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_BYTES,
7731 stats.rx_bytes, DEVLINK_ATTR_PAD))
7732 goto nla_put_failure;
7733
7734 nla_nest_end(msg, attr);
7735
7736 return 0;
7737
7738nla_put_failure:
7739 nla_nest_cancel(msg, attr);
7740 return -EMSGSIZE;
7741}
7742
ddee9dbc
OM		 7743static int devlink_trap_stats_put(struct sk_buff *msg, struct devlink *devlink,
7744 const struct devlink_trap_item *trap_item)
7745{
7746 struct devlink_stats stats;
7747 struct nlattr *attr;
7748 u64 drops = 0;
7749 int err;
7750
7751 if (devlink->ops->trap_drop_counter_get) {
7752 err = devlink->ops->trap_drop_counter_get(devlink,
7753 trap_item->trap,
7754 &drops);
7755 if (err)
7756 return err;
7757 }
7758
7759 devlink_trap_stats_read(trap_item->stats, &stats);
7760
7761 attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
7762 if (!attr)
7763 return -EMSGSIZE;
7764
7765 if (devlink->ops->trap_drop_counter_get &&
7766 nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_DROPPED, drops,
7767 DEVLINK_ATTR_PAD))
7768 goto nla_put_failure;
7769
7770 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_PACKETS,
7771 stats.rx_packets, DEVLINK_ATTR_PAD))
7772 goto nla_put_failure;
7773
7774 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_BYTES,
7775 stats.rx_bytes, DEVLINK_ATTR_PAD))
7776 goto nla_put_failure;
7777
7778 nla_nest_end(msg, attr);
7779
7780 return 0;
7781
7782nla_put_failure:
7783 nla_nest_cancel(msg, attr);
7784 return -EMSGSIZE;
7785}
7786
0f420b6c
IS		 7787static int devlink_nl_trap_fill(struct sk_buff *msg, struct devlink *devlink,
7788 const struct devlink_trap_item *trap_item,
7789 enum devlink_command cmd, u32 portid, u32 seq,
7790 int flags)
7791{
7792 struct devlink_trap_group_item *group_item = trap_item->group_item;
7793 void *hdr;
7794 int err;
7795
7796 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
7797 if (!hdr)
7798 return -EMSGSIZE;
7799
7800 if (devlink_nl_put_handle(msg, devlink))
7801 goto nla_put_failure;
7802
7803 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
7804 group_item->group->name))
7805 goto nla_put_failure;
7806
7807 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_NAME, trap_item->trap->name))
7808 goto nla_put_failure;
7809
7810 if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_TYPE, trap_item->trap->type))
7811 goto nla_put_failure;
7812
7813 if (trap_item->trap->generic &&
7814 nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
7815 goto nla_put_failure;
7816
7817 if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_ACTION, trap_item->action))
7818 goto nla_put_failure;
7819
7820 err = devlink_trap_metadata_put(msg, trap_item->trap);
7821 if (err)
7822 goto nla_put_failure;
7823
ddee9dbc 7824 err = devlink_trap_stats_put(msg, devlink, trap_item);
0f420b6c
IS		 7825 if (err)
7826 goto nla_put_failure;
7827
7828 genlmsg_end(msg, hdr);
7829
7830 return 0;
7831
7832nla_put_failure:
7833 genlmsg_cancel(msg, hdr);
7834 return -EMSGSIZE;
7835}
7836
7837static int devlink_nl_cmd_trap_get_doit(struct sk_buff *skb,
7838 struct genl_info *info)
7839{
7840 struct netlink_ext_ack *extack = info->extack;
7841 struct devlink *devlink = info->user_ptr[0];
7842 struct devlink_trap_item *trap_item;
7843 struct sk_buff *msg;
7844 int err;
7845
7846 if (list_empty(&devlink->trap_list))
7847 return -EOPNOTSUPP;
7848
7849 trap_item = devlink_trap_item_get_from_info(devlink, info);
7850 if (!trap_item) {
7851 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
7852 return -ENOENT;
7853 }
7854
7855 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7856 if (!msg)
7857 return -ENOMEM;
7858
7859 err = devlink_nl_trap_fill(msg, devlink, trap_item,
7860 DEVLINK_CMD_TRAP_NEW, info->snd_portid,
7861 info->snd_seq, 0);
7862 if (err)
7863 goto err_trap_fill;
7864
7865 return genlmsg_reply(msg, info);
7866
7867err_trap_fill:
7868 nlmsg_free(msg);
7869 return err;
7870}
7871
7872static int devlink_nl_cmd_trap_get_dumpit(struct sk_buff *msg,
7873 struct netlink_callback *cb)
7874{
7875 struct devlink_trap_item *trap_item;
7876 struct devlink *devlink;
7877 int start = cb->args[0];
11a861d7 7878 unsigned long index;
0f420b6c
IS		 7879 int idx = 0;
7880 int err;
7881
7882 mutex_lock(&devlink_mutex);
11a861d7 7883 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
437ebfd9 7884 if (!devlink_try_get(devlink))
0f420b6c 7885 continue;
437ebfd9
LR		 7886
7887 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
7888 goto retry;
7889
0f420b6c
IS		 7890 mutex_lock(&devlink->lock);
7891 list_for_each_entry(trap_item, &devlink->trap_list, list) {
7892 if (idx < start) {
7893 idx++;
7894 continue;
7895 }
7896 err = devlink_nl_trap_fill(msg, devlink, trap_item,
7897 DEVLINK_CMD_TRAP_NEW,
7898 NETLINK_CB(cb->skb).portid,
7899 cb->nlh->nlmsg_seq,
7900 NLM_F_MULTI);
7901 if (err) {
7902 mutex_unlock(&devlink->lock);
437ebfd9 7903 devlink_put(devlink);
0f420b6c
IS		 7904 goto out;
7905 }
7906 idx++;
7907 }
7908 mutex_unlock(&devlink->lock);
437ebfd9
LR		 7909retry:
7910 devlink_put(devlink);
0f420b6c
IS		 7911 }
7912out:
7913 mutex_unlock(&devlink_mutex);
7914
7915 cb->args[0] = idx;
7916 return msg->len;
7917}
7918
7919static int __devlink_trap_action_set(struct devlink *devlink,
7920 struct devlink_trap_item *trap_item,
7921 enum devlink_trap_action trap_action,
7922 struct netlink_ext_ack *extack)
7923{
7924 int err;
7925
7926 if (trap_item->action != trap_action &&
7927 trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP) {
7928 NL_SET_ERR_MSG_MOD(extack, "Cannot change action of non-drop traps. Skipping");
7929 return 0;
7930 }
7931
7932 err = devlink->ops->trap_action_set(devlink, trap_item->trap,
c88e11e0 7933 trap_action, extack);
0f420b6c
IS		 7934 if (err)
7935 return err;
7936
7937 trap_item->action = trap_action;
7938
7939 return 0;
7940}
7941
7942static int devlink_trap_action_set(struct devlink *devlink,
7943 struct devlink_trap_item *trap_item,
7944 struct genl_info *info)
7945{
7946 enum devlink_trap_action trap_action;
7947 int err;
7948
7949 if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
7950 return 0;
7951
7952 err = devlink_trap_action_get_from_info(info, &trap_action);
7953 if (err) {
7954 NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
7955 return -EINVAL;
7956 }
7957
7958 return __devlink_trap_action_set(devlink, trap_item, trap_action,
7959 info->extack);
7960}
7961
7962static int devlink_nl_cmd_trap_set_doit(struct sk_buff *skb,
7963 struct genl_info *info)
7964{
7965 struct netlink_ext_ack *extack = info->extack;
7966 struct devlink *devlink = info->user_ptr[0];
7967 struct devlink_trap_item *trap_item;
0f420b6c
IS		 7968
7969 if (list_empty(&devlink->trap_list))
7970 return -EOPNOTSUPP;
7971
7972 trap_item = devlink_trap_item_get_from_info(devlink, info);
7973 if (!trap_item) {
7974 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
7975 return -ENOENT;
7976 }
7977
8daa76a5 7978 return devlink_trap_action_set(devlink, trap_item, info);
0f420b6c
IS		 7979}
7980
7981static struct devlink_trap_group_item *
7982devlink_trap_group_item_lookup(struct devlink *devlink, const char *name)
7983{
7984 struct devlink_trap_group_item *group_item;
7985
7986 list_for_each_entry(group_item, &devlink->trap_group_list, list) {
7987 if (!strcmp(group_item->group->name, name))
7988 return group_item;
7989 }
7990
7991 return NULL;
7992}
7993
107f1678
IS		 7994static struct devlink_trap_group_item *
7995devlink_trap_group_item_lookup_by_id(struct devlink *devlink, u16 id)
7996{
7997 struct devlink_trap_group_item *group_item;
7998
7999 list_for_each_entry(group_item, &devlink->trap_group_list, list) {
8000 if (group_item->group->id == id)
8001 return group_item;
8002 }
8003
8004 return NULL;
8005}
8006
0f420b6c
IS		 8007static struct devlink_trap_group_item *
8008devlink_trap_group_item_get_from_info(struct devlink *devlink,
8009 struct genl_info *info)
8010{
8011 char *name;
8012
8013 if (!info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME])
8014 return NULL;
8015 name = nla_data(info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME]);
8016
8017 return devlink_trap_group_item_lookup(devlink, name);
8018}
8019
8020static int
8021devlink_nl_trap_group_fill(struct sk_buff *msg, struct devlink *devlink,
8022 const struct devlink_trap_group_item *group_item,
8023 enum devlink_command cmd, u32 portid, u32 seq,
8024 int flags)
8025{
8026 void *hdr;
8027 int err;
8028
8029 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
8030 if (!hdr)
8031 return -EMSGSIZE;
8032
8033 if (devlink_nl_put_handle(msg, devlink))
8034 goto nla_put_failure;
8035
8036 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
8037 group_item->group->name))
8038 goto nla_put_failure;
8039
8040 if (group_item->group->generic &&
8041 nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
8042 goto nla_put_failure;
8043
f9f54392
IS		 8044 if (group_item->policer_item &&
8045 nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID,
8046 group_item->policer_item->policer->id))
8047 goto nla_put_failure;
8048
ddee9dbc 8049 err = devlink_trap_group_stats_put(msg, group_item->stats);
0f420b6c
IS		 8050 if (err)
8051 goto nla_put_failure;
8052
8053 genlmsg_end(msg, hdr);
8054
8055 return 0;
8056
8057nla_put_failure:
8058 genlmsg_cancel(msg, hdr);
8059 return -EMSGSIZE;
8060}
8061
8062static int devlink_nl_cmd_trap_group_get_doit(struct sk_buff *skb,
8063 struct genl_info *info)
8064{
8065 struct netlink_ext_ack *extack = info->extack;
8066 struct devlink *devlink = info->user_ptr[0];
8067 struct devlink_trap_group_item *group_item;
8068 struct sk_buff *msg;
8069 int err;
8070
8071 if (list_empty(&devlink->trap_group_list))
8072 return -EOPNOTSUPP;
8073
8074 group_item = devlink_trap_group_item_get_from_info(devlink, info);
8075 if (!group_item) {
8076 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
8077 return -ENOENT;
8078 }
8079
8080 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8081 if (!msg)
8082 return -ENOMEM;
8083
8084 err = devlink_nl_trap_group_fill(msg, devlink, group_item,
8085 DEVLINK_CMD_TRAP_GROUP_NEW,
8086 info->snd_portid, info->snd_seq, 0);
8087 if (err)
8088 goto err_trap_group_fill;
8089
8090 return genlmsg_reply(msg, info);
8091
8092err_trap_group_fill:
8093 nlmsg_free(msg);
8094 return err;
8095}
8096
8097static int devlink_nl_cmd_trap_group_get_dumpit(struct sk_buff *msg,
8098 struct netlink_callback *cb)
8099{
8100 enum devlink_command cmd = DEVLINK_CMD_TRAP_GROUP_NEW;
8101 struct devlink_trap_group_item *group_item;
8102 u32 portid = NETLINK_CB(cb->skb).portid;
8103 struct devlink *devlink;
8104 int start = cb->args[0];
11a861d7 8105 unsigned long index;
0f420b6c
IS		 8106 int idx = 0;
8107 int err;
8108
8109 mutex_lock(&devlink_mutex);
11a861d7 8110 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
437ebfd9 8111 if (!devlink_try_get(devlink))
0f420b6c 8112 continue;
437ebfd9
LR		 8113
8114 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
8115 goto retry;
8116
0f420b6c
IS		 8117 mutex_lock(&devlink->lock);
8118 list_for_each_entry(group_item, &devlink->trap_group_list,
8119 list) {
8120 if (idx < start) {
8121 idx++;
8122 continue;
8123 }
8124 err = devlink_nl_trap_group_fill(msg, devlink,
8125 group_item, cmd,
8126 portid,
8127 cb->nlh->nlmsg_seq,
8128 NLM_F_MULTI);
8129 if (err) {
8130 mutex_unlock(&devlink->lock);
437ebfd9 8131 devlink_put(devlink);
0f420b6c
IS		 8132 goto out;
8133 }
8134 idx++;
8135 }
8136 mutex_unlock(&devlink->lock);
437ebfd9
LR		 8137retry:
8138 devlink_put(devlink);
0f420b6c
IS		 8139 }
8140out:
8141 mutex_unlock(&devlink_mutex);
8142
8143 cb->args[0] = idx;
8144 return msg->len;
8145}
8146
8147static int
8148__devlink_trap_group_action_set(struct devlink *devlink,
8149 struct devlink_trap_group_item *group_item,
8150 enum devlink_trap_action trap_action,
8151 struct netlink_ext_ack *extack)
8152{
8153 const char *group_name = group_item->group->name;
8154 struct devlink_trap_item *trap_item;
8155 int err;
8156
c50bf2be
IC		 8157 if (devlink->ops->trap_group_action_set) {
8158 err = devlink->ops->trap_group_action_set(devlink, group_item->group,
8159 trap_action, extack);
8160 if (err)
8161 return err;
8162
8163 list_for_each_entry(trap_item, &devlink->trap_list, list) {
8164 if (strcmp(trap_item->group_item->group->name, group_name))
8165 continue;
8166 if (trap_item->action != trap_action &&
8167 trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP)
8168 continue;
8169 trap_item->action = trap_action;
8170 }
8171
8172 return 0;
8173 }
8174
0f420b6c 8175 list_for_each_entry(trap_item, &devlink->trap_list, list) {
107f1678 8176 if (strcmp(trap_item->group_item->group->name, group_name))
0f420b6c
IS		 8177 continue;
8178 err = __devlink_trap_action_set(devlink, trap_item,
8179 trap_action, extack);
8180 if (err)
8181 return err;
8182 }
8183
8184 return 0;
8185}
8186
8187static int
8188devlink_trap_group_action_set(struct devlink *devlink,
8189 struct devlink_trap_group_item *group_item,
c064875a 8190 struct genl_info *info, bool *p_modified)
0f420b6c
IS		 8191{
8192 enum devlink_trap_action trap_action;
8193 int err;
8194
8195 if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
8196 return 0;
8197
8198 err = devlink_trap_action_get_from_info(info, &trap_action);
8199 if (err) {
8200 NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
8201 return -EINVAL;
8202 }
8203
8204 err = __devlink_trap_group_action_set(devlink, group_item, trap_action,
8205 info->extack);
8206 if (err)
8207 return err;
8208
c064875a
IS		 8209 *p_modified = true;
8210
8211 return 0;
8212}
8213
8214static int devlink_trap_group_set(struct devlink *devlink,
8215 struct devlink_trap_group_item *group_item,
8216 struct genl_info *info)
8217{
8218 struct devlink_trap_policer_item *policer_item;
8219 struct netlink_ext_ack *extack = info->extack;
8220 const struct devlink_trap_policer *policer;
8221 struct nlattr **attrs = info->attrs;
8222 int err;
8223
8224 if (!attrs[DEVLINK_ATTR_TRAP_POLICER_ID])
8225 return 0;
8226
8227 if (!devlink->ops->trap_group_set)
8228 return -EOPNOTSUPP;
8229
8230 policer_item = group_item->policer_item;
8231 if (attrs[DEVLINK_ATTR_TRAP_POLICER_ID]) {
8232 u32 policer_id;
8233
8234 policer_id = nla_get_u32(attrs[DEVLINK_ATTR_TRAP_POLICER_ID]);
8235 policer_item = devlink_trap_policer_item_lookup(devlink,
8236 policer_id);
8237 if (policer_id && !policer_item) {
8238 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
8239 return -ENOENT;
8240 }
8241 }
8242 policer = policer_item ? policer_item->policer : NULL;
8243
c88e11e0
IS		 8244 err = devlink->ops->trap_group_set(devlink, group_item->group, policer,
8245 extack);
c064875a
IS		 8246 if (err)
8247 return err;
8248
8249 group_item->policer_item = policer_item;
8250
0f420b6c
IS		 8251 return 0;
8252}
8253
8254static int devlink_nl_cmd_trap_group_set_doit(struct sk_buff *skb,
8255 struct genl_info *info)
8256{
8257 struct netlink_ext_ack *extack = info->extack;
8258 struct devlink *devlink = info->user_ptr[0];
8259 struct devlink_trap_group_item *group_item;
c064875a 8260 bool modified = false;
0f420b6c
IS		 8261 int err;
8262
8263 if (list_empty(&devlink->trap_group_list))
8264 return -EOPNOTSUPP;
8265
8266 group_item = devlink_trap_group_item_get_from_info(devlink, info);
8267 if (!group_item) {
8268 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
8269 return -ENOENT;
8270 }
8271
c064875a
IS		 8272 err = devlink_trap_group_action_set(devlink, group_item, info,
8273 &modified);
0f420b6c
IS		 8274 if (err)
8275 return err;
8276
c064875a
IS		 8277 err = devlink_trap_group_set(devlink, group_item, info);
8278 if (err)
8279 goto err_trap_group_set;
8280
0f420b6c 8281 return 0;
c064875a
IS		 8282
8283err_trap_group_set:
8284 if (modified)
8285 NL_SET_ERR_MSG_MOD(extack, "Trap group set failed, but some changes were committed already");
8286 return err;
0f420b6c
IS		 8287}
8288
1e8c6619
IS		 8289static struct devlink_trap_policer_item *
8290devlink_trap_policer_item_get_from_info(struct devlink *devlink,
8291 struct genl_info *info)
8292{
8293 u32 id;
8294
8295 if (!info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID])
8296 return NULL;
8297 id = nla_get_u32(info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID]);
8298
8299 return devlink_trap_policer_item_lookup(devlink, id);
8300}
8301
8302static int
8303devlink_trap_policer_stats_put(struct sk_buff *msg, struct devlink *devlink,
8304 const struct devlink_trap_policer *policer)
8305{
8306 struct nlattr *attr;
8307 u64 drops;
8308 int err;
8309
8310 if (!devlink->ops->trap_policer_counter_get)
8311 return 0;
8312
8313 err = devlink->ops->trap_policer_counter_get(devlink, policer, &drops);
8314 if (err)
8315 return err;
8316
8317 attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
8318 if (!attr)
8319 return -EMSGSIZE;
8320
8321 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_DROPPED, drops,
8322 DEVLINK_ATTR_PAD))
8323 goto nla_put_failure;
8324
8325 nla_nest_end(msg, attr);
8326
8327 return 0;
8328
8329nla_put_failure:
8330 nla_nest_cancel(msg, attr);
8331 return -EMSGSIZE;
8332}
8333
8334static int
8335devlink_nl_trap_policer_fill(struct sk_buff *msg, struct devlink *devlink,
8336 const struct devlink_trap_policer_item *policer_item,
8337 enum devlink_command cmd, u32 portid, u32 seq,
8338 int flags)
8339{
8340 void *hdr;
8341 int err;
8342
8343 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
8344 if (!hdr)
8345 return -EMSGSIZE;
8346
8347 if (devlink_nl_put_handle(msg, devlink))
8348 goto nla_put_failure;
8349
8350 if (nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID,
8351 policer_item->policer->id))
8352 goto nla_put_failure;
8353
8354 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_RATE,
8355 policer_item->rate, DEVLINK_ATTR_PAD))
8356 goto nla_put_failure;
8357
8358 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_BURST,
8359 policer_item->burst, DEVLINK_ATTR_PAD))
8360 goto nla_put_failure;
8361
8362 err = devlink_trap_policer_stats_put(msg, devlink,
8363 policer_item->policer);
8364 if (err)
8365 goto nla_put_failure;
8366
8367 genlmsg_end(msg, hdr);
8368
8369 return 0;
8370
8371nla_put_failure:
8372 genlmsg_cancel(msg, hdr);
8373 return -EMSGSIZE;
8374}
8375
8376static int devlink_nl_cmd_trap_policer_get_doit(struct sk_buff *skb,
8377 struct genl_info *info)
8378{
8379 struct devlink_trap_policer_item *policer_item;
8380 struct netlink_ext_ack *extack = info->extack;
8381 struct devlink *devlink = info->user_ptr[0];
8382 struct sk_buff *msg;
8383 int err;
8384
8385 if (list_empty(&devlink->trap_policer_list))
8386 return -EOPNOTSUPP;
8387
8388 policer_item = devlink_trap_policer_item_get_from_info(devlink, info);
8389 if (!policer_item) {
8390 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
8391 return -ENOENT;
8392 }
8393
8394 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8395 if (!msg)
8396 return -ENOMEM;
8397
8398 err = devlink_nl_trap_policer_fill(msg, devlink, policer_item,
8399 DEVLINK_CMD_TRAP_POLICER_NEW,
8400 info->snd_portid, info->snd_seq, 0);
8401 if (err)
8402 goto err_trap_policer_fill;
8403
8404 return genlmsg_reply(msg, info);
8405
8406err_trap_policer_fill:
8407 nlmsg_free(msg);
8408 return err;
8409}
8410
8411static int devlink_nl_cmd_trap_policer_get_dumpit(struct sk_buff *msg,
8412 struct netlink_callback *cb)
8413{
8414 enum devlink_command cmd = DEVLINK_CMD_TRAP_POLICER_NEW;
8415 struct devlink_trap_policer_item *policer_item;
8416 u32 portid = NETLINK_CB(cb->skb).portid;
8417 struct devlink *devlink;
8418 int start = cb->args[0];
11a861d7 8419 unsigned long index;
1e8c6619
IS		 8420 int idx = 0;
8421 int err;
8422
8423 mutex_lock(&devlink_mutex);
11a861d7 8424 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
437ebfd9 8425 if (!devlink_try_get(devlink))
1e8c6619 8426 continue;
437ebfd9
LR		 8427
8428 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
8429 goto retry;
8430
1e8c6619
IS		 8431 mutex_lock(&devlink->lock);
8432 list_for_each_entry(policer_item, &devlink->trap_policer_list,
8433 list) {
8434 if (idx < start) {
8435 idx++;
8436 continue;
8437 }
8438 err = devlink_nl_trap_policer_fill(msg, devlink,
8439 policer_item, cmd,
8440 portid,
8441 cb->nlh->nlmsg_seq,
8442 NLM_F_MULTI);
8443 if (err) {
8444 mutex_unlock(&devlink->lock);
437ebfd9 8445 devlink_put(devlink);
1e8c6619
IS		 8446 goto out;
8447 }
8448 idx++;
8449 }
8450 mutex_unlock(&devlink->lock);
437ebfd9
LR		 8451retry:
8452 devlink_put(devlink);
1e8c6619
IS		 8453 }
8454out:
8455 mutex_unlock(&devlink_mutex);
8456
8457 cb->args[0] = idx;
8458 return msg->len;
8459}
8460
8461static int
8462devlink_trap_policer_set(struct devlink *devlink,
8463 struct devlink_trap_policer_item *policer_item,
8464 struct genl_info *info)
8465{
8466 struct netlink_ext_ack *extack = info->extack;
8467 struct nlattr **attrs = info->attrs;
8468 u64 rate, burst;
8469 int err;
8470
8471 rate = policer_item->rate;
8472 burst = policer_item->burst;
8473
8474 if (attrs[DEVLINK_ATTR_TRAP_POLICER_RATE])
8475 rate = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_RATE]);
8476
8477 if (attrs[DEVLINK_ATTR_TRAP_POLICER_BURST])
8478 burst = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_BURST]);
8479
8480 if (rate < policer_item->policer->min_rate) {
8481 NL_SET_ERR_MSG_MOD(extack, "Policer rate lower than limit");
8482 return -EINVAL;
8483 }
8484
8485 if (rate > policer_item->policer->max_rate) {
8486 NL_SET_ERR_MSG_MOD(extack, "Policer rate higher than limit");
8487 return -EINVAL;
8488 }
8489
8490 if (burst < policer_item->policer->min_burst) {
8491 NL_SET_ERR_MSG_MOD(extack, "Policer burst size lower than limit");
8492 return -EINVAL;
8493 }
8494
8495 if (burst > policer_item->policer->max_burst) {
8496 NL_SET_ERR_MSG_MOD(extack, "Policer burst size higher than limit");
8497 return -EINVAL;
8498 }
8499
8500 err = devlink->ops->trap_policer_set(devlink, policer_item->policer,
8501 rate, burst, info->extack);
8502 if (err)
8503 return err;
8504
8505 policer_item->rate = rate;
8506 policer_item->burst = burst;
8507
8508 return 0;
8509}
8510
8511static int devlink_nl_cmd_trap_policer_set_doit(struct sk_buff *skb,
8512 struct genl_info *info)
8513{
8514 struct devlink_trap_policer_item *policer_item;
8515 struct netlink_ext_ack *extack = info->extack;
8516 struct devlink *devlink = info->user_ptr[0];
8517
8518 if (list_empty(&devlink->trap_policer_list))
8519 return -EOPNOTSUPP;
8520
8521 if (!devlink->ops->trap_policer_set)
8522 return -EOPNOTSUPP;
8523
8524 policer_item = devlink_trap_policer_item_get_from_info(devlink, info);
8525 if (!policer_item) {
8526 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
8527 return -ENOENT;
8528 }
8529
8530 return devlink_trap_policer_set(devlink, policer_item, info);
8531}
8532
bfcd3a46 8533static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = {
1e8c6619
IS		 8534 [DEVLINK_ATTR_UNSPEC] = { .strict_start_type =
8535 DEVLINK_ATTR_TRAP_POLICER_ID },
bfcd3a46
JP		 8536 [DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING },
8537 [DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING },
8538 [DEVLINK_ATTR_PORT_INDEX] = { .type = NLA_U32 },
c49a9440
PP		 8539 [DEVLINK_ATTR_PORT_TYPE] = NLA_POLICY_RANGE(NLA_U16, DEVLINK_PORT_TYPE_AUTO,
8540 DEVLINK_PORT_TYPE_IB),
bfcd3a46 8541 [DEVLINK_ATTR_PORT_SPLIT_COUNT] = { .type = NLA_U32 },
bf797471
JP		 8542 [DEVLINK_ATTR_SB_INDEX] = { .type = NLA_U32 },
8543 [DEVLINK_ATTR_SB_POOL_INDEX] = { .type = NLA_U16 },
8544 [DEVLINK_ATTR_SB_POOL_TYPE] = { .type = NLA_U8 },
8545 [DEVLINK_ATTR_SB_POOL_SIZE] = { .type = NLA_U32 },
8546 [DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE] = { .type = NLA_U8 },
8547 [DEVLINK_ATTR_SB_THRESHOLD] = { .type = NLA_U32 },
8548 [DEVLINK_ATTR_SB_TC_INDEX] = { .type = NLA_U16 },
ba356c90
PP		 8549 [DEVLINK_ATTR_ESWITCH_MODE] = NLA_POLICY_RANGE(NLA_U16, DEVLINK_ESWITCH_MODE_LEGACY,
8550 DEVLINK_ESWITCH_MODE_SWITCHDEV),
59bfde01 8551 [DEVLINK_ATTR_ESWITCH_INLINE_MODE] = { .type = NLA_U8 },
f43e9b06 8552 [DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = { .type = NLA_U8 },
1555d204
AS		 8553 [DEVLINK_ATTR_DPIPE_TABLE_NAME] = { .type = NLA_NUL_STRING },
8554 [DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED] = { .type = NLA_U8 },
d9f9b9a4
AS		 8555 [DEVLINK_ATTR_RESOURCE_ID] = { .type = NLA_U64},
8556 [DEVLINK_ATTR_RESOURCE_SIZE] = { .type = NLA_U64},
e3b7ca18
MS		 8557 [DEVLINK_ATTR_PARAM_NAME] = { .type = NLA_NUL_STRING },
8558 [DEVLINK_ATTR_PARAM_TYPE] = { .type = NLA_U8 },
8559 [DEVLINK_ATTR_PARAM_VALUE_CMODE] = { .type = NLA_U8 },
d8db7ea5 8560 [DEVLINK_ATTR_REGION_NAME] = { .type = NLA_NUL_STRING },
866319bb 8561 [DEVLINK_ATTR_REGION_SNAPSHOT_ID] = { .type = NLA_U32 },
ff3b63b8
JK		 8562 [DEVLINK_ATTR_REGION_CHUNK_ADDR] = { .type = NLA_U64 },
8563 [DEVLINK_ATTR_REGION_CHUNK_LEN] = { .type = NLA_U64 },
7afe335a 8564 [DEVLINK_ATTR_HEALTH_REPORTER_NAME] = { .type = NLA_NUL_STRING },
a1e55ec0
EBE		 8565 [DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] = { .type = NLA_U64 },
8566 [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER] = { .type = NLA_U8 },
76726ccb
JK		 8567 [DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME] = { .type = NLA_NUL_STRING },
8568 [DEVLINK_ATTR_FLASH_UPDATE_COMPONENT] = { .type = NLA_NUL_STRING },
5d5b4128
JK		 8569 [DEVLINK_ATTR_FLASH_UPDATE_OVERWRITE_MASK] =
8570 NLA_POLICY_BITFIELD32(DEVLINK_SUPPORTED_FLASH_OVERWRITE_SECTIONS),
0f420b6c
IS		 8571 [DEVLINK_ATTR_TRAP_NAME] = { .type = NLA_NUL_STRING },
8572 [DEVLINK_ATTR_TRAP_ACTION] = { .type = NLA_U8 },
8573 [DEVLINK_ATTR_TRAP_GROUP_NAME] = { .type = NLA_NUL_STRING },
070c63f2
JP		 8574 [DEVLINK_ATTR_NETNS_PID] = { .type = NLA_U32 },
8575 [DEVLINK_ATTR_NETNS_FD] = { .type = NLA_U32 },
8576 [DEVLINK_ATTR_NETNS_ID] = { .type = NLA_U32 },
48bb52c8 8577 [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP] = { .type = NLA_U8 },
1e8c6619
IS		 8578 [DEVLINK_ATTR_TRAP_POLICER_ID] = { .type = NLA_U32 },
8579 [DEVLINK_ATTR_TRAP_POLICER_RATE] = { .type = NLA_U64 },
8580 [DEVLINK_ATTR_TRAP_POLICER_BURST] = { .type = NLA_U64 },
a1e8ae90 8581 [DEVLINK_ATTR_PORT_FUNCTION] = { .type = NLA_NESTED },
ccdf0721
MS		 8582 [DEVLINK_ATTR_RELOAD_ACTION] = NLA_POLICY_RANGE(NLA_U8, DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
8583 DEVLINK_RELOAD_ACTION_MAX),
dc64cc7c 8584 [DEVLINK_ATTR_RELOAD_LIMITS] = NLA_POLICY_BITFIELD32(DEVLINK_RELOAD_LIMITS_VALID_MASK),
cd76dcd6
PP		 8585 [DEVLINK_ATTR_PORT_FLAVOUR] = { .type = NLA_U16 },
8586 [DEVLINK_ATTR_PORT_PCI_PF_NUMBER] = { .type = NLA_U16 },
8587 [DEVLINK_ATTR_PORT_PCI_SF_NUMBER] = { .type = NLA_U32 },
8588 [DEVLINK_ATTR_PORT_CONTROLLER_NUMBER] = { .type = NLA_U32 },
4677efc4 8589 [DEVLINK_ATTR_RATE_TYPE] = { .type = NLA_U16 },
1897db2e
DL		 8590 [DEVLINK_ATTR_RATE_TX_SHARE] = { .type = NLA_U64 },
8591 [DEVLINK_ATTR_RATE_TX_MAX] = { .type = NLA_U64 },
a8ecb93e 8592 [DEVLINK_ATTR_RATE_NODE_NAME] = { .type = NLA_NUL_STRING },
d7555984 8593 [DEVLINK_ATTR_RATE_PARENT_NODE_NAME] = { .type = NLA_NUL_STRING },
bfcd3a46
JP		 8594};
8595
66a9b928 8596static const struct genl_small_ops devlink_nl_ops[] = {
bfcd3a46
JP		 8597 {
8598 .cmd = DEVLINK_CMD_GET,
ef6243ac 8599 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46
JP		 8600 .doit = devlink_nl_cmd_get_doit,
8601 .dumpit = devlink_nl_cmd_get_dumpit,
bfcd3a46
JP		 8602 /* can be retrieved by unprivileged users */
8603 },
8604 {
8605 .cmd = DEVLINK_CMD_PORT_GET,
ef6243ac 8606 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46
JP		 8607 .doit = devlink_nl_cmd_port_get_doit,
8608 .dumpit = devlink_nl_cmd_port_get_dumpit,
bfcd3a46
JP		 8609 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
8610 /* can be retrieved by unprivileged users */
8611 },
8612 {
8613 .cmd = DEVLINK_CMD_PORT_SET,
ef6243ac 8614 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46 8615 .doit = devlink_nl_cmd_port_set_doit,
bfcd3a46
JP		 8616 .flags = GENL_ADMIN_PERM,
8617 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
8618 },
4677efc4
DL		 8619 {
8620 .cmd = DEVLINK_CMD_RATE_GET,
8621 .doit = devlink_nl_cmd_rate_get_doit,
8622 .dumpit = devlink_nl_cmd_rate_get_dumpit,
8623 .internal_flags = DEVLINK_NL_FLAG_NEED_RATE,
8624 /* can be retrieved by unprivileged users */
8625 },
1897db2e
DL		 8626 {
8627 .cmd = DEVLINK_CMD_RATE_SET,
8628 .doit = devlink_nl_cmd_rate_set_doit,
8629 .flags = GENL_ADMIN_PERM,
8630 .internal_flags = DEVLINK_NL_FLAG_NEED_RATE,
8631 },
a8ecb93e
DL		 8632 {
8633 .cmd = DEVLINK_CMD_RATE_NEW,
8634 .doit = devlink_nl_cmd_rate_new_doit,
8635 .flags = GENL_ADMIN_PERM,
8636 },
8637 {
8638 .cmd = DEVLINK_CMD_RATE_DEL,
8639 .doit = devlink_nl_cmd_rate_del_doit,
8640 .flags = GENL_ADMIN_PERM,
8641 .internal_flags = DEVLINK_NL_FLAG_NEED_RATE_NODE,
8642 },
bfcd3a46
JP		 8643 {
8644 .cmd = DEVLINK_CMD_PORT_SPLIT,
ef6243ac 8645 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46 8646 .doit = devlink_nl_cmd_port_split_doit,
bfcd3a46 8647 .flags = GENL_ADMIN_PERM,
637989b5 8648 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
bfcd3a46
JP		 8649 },
8650 {
8651 .cmd = DEVLINK_CMD_PORT_UNSPLIT,
ef6243ac 8652 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46 8653 .doit = devlink_nl_cmd_port_unsplit_doit,
bfcd3a46 8654 .flags = GENL_ADMIN_PERM,
637989b5 8655 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
bfcd3a46 8656 },
cd76dcd6
PP		 8657 {
8658 .cmd = DEVLINK_CMD_PORT_NEW,
8659 .doit = devlink_nl_cmd_port_new_doit,
8660 .flags = GENL_ADMIN_PERM,
8661 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
8662 },
8663 {
8664 .cmd = DEVLINK_CMD_PORT_DEL,
8665 .doit = devlink_nl_cmd_port_del_doit,
8666 .flags = GENL_ADMIN_PERM,
8667 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
8668 },
bf797471
JP		 8669 {
8670 .cmd = DEVLINK_CMD_SB_GET,
ef6243ac 8671 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471
JP		 8672 .doit = devlink_nl_cmd_sb_get_doit,
8673 .dumpit = devlink_nl_cmd_sb_get_dumpit,
bf797471
JP		 8674 /* can be retrieved by unprivileged users */
8675 },
8676 {
8677 .cmd = DEVLINK_CMD_SB_POOL_GET,
ef6243ac 8678 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471
JP		 8679 .doit = devlink_nl_cmd_sb_pool_get_doit,
8680 .dumpit = devlink_nl_cmd_sb_pool_get_dumpit,
bf797471
JP		 8681 /* can be retrieved by unprivileged users */
8682 },
8683 {
8684 .cmd = DEVLINK_CMD_SB_POOL_SET,
ef6243ac 8685 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471 8686 .doit = devlink_nl_cmd_sb_pool_set_doit,
bf797471 8687 .flags = GENL_ADMIN_PERM,
bf797471
JP		 8688 },
8689 {
8690 .cmd = DEVLINK_CMD_SB_PORT_POOL_GET,
ef6243ac 8691 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471
JP		 8692 .doit = devlink_nl_cmd_sb_port_pool_get_doit,
8693 .dumpit = devlink_nl_cmd_sb_port_pool_get_dumpit,
637989b5 8694 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
bf797471
JP		 8695 /* can be retrieved by unprivileged users */
8696 },
8697 {
8698 .cmd = DEVLINK_CMD_SB_PORT_POOL_SET,
ef6243ac 8699 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471 8700 .doit = devlink_nl_cmd_sb_port_pool_set_doit,
bf797471 8701 .flags = GENL_ADMIN_PERM,
637989b5 8702 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
bf797471
JP		 8703 },
8704 {
8705 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_GET,
ef6243ac 8706 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471
JP		 8707 .doit = devlink_nl_cmd_sb_tc_pool_bind_get_doit,
8708 .dumpit = devlink_nl_cmd_sb_tc_pool_bind_get_dumpit,
637989b5 8709 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
bf797471
JP		 8710 /* can be retrieved by unprivileged users */
8711 },
8712 {
8713 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_SET,
ef6243ac 8714 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471 8715 .doit = devlink_nl_cmd_sb_tc_pool_bind_set_doit,
bf797471 8716 .flags = GENL_ADMIN_PERM,
637989b5 8717 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
bf797471 8718 },
df38dafd
JP		 8719 {
8720 .cmd = DEVLINK_CMD_SB_OCC_SNAPSHOT,
ef6243ac 8721 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
df38dafd 8722 .doit = devlink_nl_cmd_sb_occ_snapshot_doit,
df38dafd 8723 .flags = GENL_ADMIN_PERM,
df38dafd
JP		 8724 },
8725 {
8726 .cmd = DEVLINK_CMD_SB_OCC_MAX_CLEAR,
ef6243ac 8727 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
df38dafd 8728 .doit = devlink_nl_cmd_sb_occ_max_clear_doit,
df38dafd 8729 .flags = GENL_ADMIN_PERM,
df38dafd 8730 },
08f4b591 8731 {
adf200f3 8732 .cmd = DEVLINK_CMD_ESWITCH_GET,
ef6243ac 8733 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
adf200f3 8734 .doit = devlink_nl_cmd_eswitch_get_doit,
08f4b591 8735 .flags = GENL_ADMIN_PERM,
637989b5 8736 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
08f4b591
OG		 8737 },
8738 {
adf200f3 8739 .cmd = DEVLINK_CMD_ESWITCH_SET,
ef6243ac 8740 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
adf200f3 8741 .doit = devlink_nl_cmd_eswitch_set_doit,
08f4b591 8742 .flags = GENL_ADMIN_PERM,
637989b5 8743 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
08f4b591 8744 },
1555d204
AS		 8745 {
8746 .cmd = DEVLINK_CMD_DPIPE_TABLE_GET,
ef6243ac 8747 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1555d204 8748 .doit = devlink_nl_cmd_dpipe_table_get,
67ae686b 8749 /* can be retrieved by unprivileged users */
1555d204
AS		 8750 },
8751 {
8752 .cmd = DEVLINK_CMD_DPIPE_ENTRIES_GET,
ef6243ac 8753 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1555d204 8754 .doit = devlink_nl_cmd_dpipe_entries_get,
67ae686b 8755 /* can be retrieved by unprivileged users */
1555d204
AS		 8756 },
8757 {
8758 .cmd = DEVLINK_CMD_DPIPE_HEADERS_GET,
ef6243ac 8759 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1555d204 8760 .doit = devlink_nl_cmd_dpipe_headers_get,
67ae686b 8761 /* can be retrieved by unprivileged users */
1555d204
AS		 8762 },
8763 {
8764 .cmd = DEVLINK_CMD_DPIPE_TABLE_COUNTERS_SET,
ef6243ac 8765 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1555d204 8766 .doit = devlink_nl_cmd_dpipe_table_counters_set,
1555d204 8767 .flags = GENL_ADMIN_PERM,
1555d204 8768 },
d9f9b9a4
AS		 8769 {
8770 .cmd = DEVLINK_CMD_RESOURCE_SET,
ef6243ac 8771 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
d9f9b9a4 8772 .doit = devlink_nl_cmd_resource_set,
d9f9b9a4 8773 .flags = GENL_ADMIN_PERM,
d9f9b9a4
AS		 8774 },
8775 {
8776 .cmd = DEVLINK_CMD_RESOURCE_DUMP,
ef6243ac 8777 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
d9f9b9a4 8778 .doit = devlink_nl_cmd_resource_dump,
67ae686b 8779 /* can be retrieved by unprivileged users */
d9f9b9a4 8780 },
2d8dc5bb
AS		 8781 {
8782 .cmd = DEVLINK_CMD_RELOAD,
ef6243ac 8783 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2d8dc5bb 8784 .doit = devlink_nl_cmd_reload,
2d8dc5bb 8785 .flags = GENL_ADMIN_PERM,
637989b5 8786 .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
2d8dc5bb 8787 },
45f05def
MS		 8788 {
8789 .cmd = DEVLINK_CMD_PARAM_GET,
ef6243ac 8790 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
45f05def
MS		 8791 .doit = devlink_nl_cmd_param_get_doit,
8792 .dumpit = devlink_nl_cmd_param_get_dumpit,
45f05def
MS		 8793 /* can be retrieved by unprivileged users */
8794 },
e3b7ca18
MS		 8795 {
8796 .cmd = DEVLINK_CMD_PARAM_SET,
ef6243ac 8797 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
e3b7ca18 8798 .doit = devlink_nl_cmd_param_set_doit,
e3b7ca18 8799 .flags = GENL_ADMIN_PERM,
e3b7ca18 8800 },
f4601dee
VV		 8801 {
8802 .cmd = DEVLINK_CMD_PORT_PARAM_GET,
ef6243ac 8803 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
f4601dee
VV		 8804 .doit = devlink_nl_cmd_port_param_get_doit,
8805 .dumpit = devlink_nl_cmd_port_param_get_dumpit,
f4601dee
VV		 8806 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
8807 /* can be retrieved by unprivileged users */
8808 },
9c54873b
VV		 8809 {
8810 .cmd = DEVLINK_CMD_PORT_PARAM_SET,
ef6243ac 8811 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
9c54873b 8812 .doit = devlink_nl_cmd_port_param_set_doit,
9c54873b
VV		 8813 .flags = GENL_ADMIN_PERM,
8814 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
8815 },
d8db7ea5
AV		 8816 {
8817 .cmd = DEVLINK_CMD_REGION_GET,
ef6243ac 8818 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
d8db7ea5
AV		 8819 .doit = devlink_nl_cmd_region_get_doit,
8820 .dumpit = devlink_nl_cmd_region_get_dumpit,
d8db7ea5 8821 .flags = GENL_ADMIN_PERM,
d8db7ea5 8822 },
b9a17abf
JK		 8823 {
8824 .cmd = DEVLINK_CMD_REGION_NEW,
8825 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8826 .doit = devlink_nl_cmd_region_new,
8827 .flags = GENL_ADMIN_PERM,
b9a17abf 8828 },
866319bb
AV		 8829 {
8830 .cmd = DEVLINK_CMD_REGION_DEL,
ef6243ac 8831 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
866319bb 8832 .doit = devlink_nl_cmd_region_del,
866319bb 8833 .flags = GENL_ADMIN_PERM,
866319bb 8834 },
4e54795a
AV		 8835 {
8836 .cmd = DEVLINK_CMD_REGION_READ,
ee85da53
JP		 8837 .validate = GENL_DONT_VALIDATE_STRICT |
8838 GENL_DONT_VALIDATE_DUMP_STRICT,
4e54795a 8839 .dumpit = devlink_nl_cmd_region_read_dumpit,
4e54795a 8840 .flags = GENL_ADMIN_PERM,
4e54795a 8841 },
f9cf2288
JK		 8842 {
8843 .cmd = DEVLINK_CMD_INFO_GET,
ef6243ac 8844 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
f9cf2288
JK		 8845 .doit = devlink_nl_cmd_info_get_doit,
8846 .dumpit = devlink_nl_cmd_info_get_dumpit,
f9cf2288
JK		 8847 /* can be retrieved by unprivileged users */
8848 },
7afe335a
EBE		 8849 {
8850 .cmd = DEVLINK_CMD_HEALTH_REPORTER_GET,
ef6243ac 8851 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7afe335a
EBE		 8852 .doit = devlink_nl_cmd_health_reporter_get_doit,
8853 .dumpit = devlink_nl_cmd_health_reporter_get_dumpit,
f4f54166 8854 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
b587bdaf 8855 DEVLINK_NL_FLAG_NO_LOCK,
7afe335a
EBE		 8856 /* can be retrieved by unprivileged users */
8857 },
a1e55ec0
EBE		 8858 {
8859 .cmd = DEVLINK_CMD_HEALTH_REPORTER_SET,
ef6243ac 8860 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
a1e55ec0 8861 .doit = devlink_nl_cmd_health_reporter_set_doit,
a1e55ec0 8862 .flags = GENL_ADMIN_PERM,
f4f54166 8863 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
b587bdaf 8864 DEVLINK_NL_FLAG_NO_LOCK,
a1e55ec0 8865 },
20a0943a
EBE		 8866 {
8867 .cmd = DEVLINK_CMD_HEALTH_REPORTER_RECOVER,
ef6243ac 8868 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
20a0943a 8869 .doit = devlink_nl_cmd_health_reporter_recover_doit,
20a0943a 8870 .flags = GENL_ADMIN_PERM,
f4f54166 8871 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
b587bdaf 8872 DEVLINK_NL_FLAG_NO_LOCK,
20a0943a 8873 },
fca42a27
EBE		 8874 {
8875 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE,
ef6243ac 8876 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
fca42a27 8877 .doit = devlink_nl_cmd_health_reporter_diagnose_doit,
fca42a27 8878 .flags = GENL_ADMIN_PERM,
f4f54166 8879 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
b587bdaf 8880 DEVLINK_NL_FLAG_NO_LOCK,
fca42a27 8881 },
35455e23
EBE		 8882 {
8883 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET,
82a843de
JP		 8884 .validate = GENL_DONT_VALIDATE_STRICT |
8885 GENL_DONT_VALIDATE_DUMP_STRICT,
e44ef4e4 8886 .dumpit = devlink_nl_cmd_health_reporter_dump_get_dumpit,
35455e23 8887 .flags = GENL_ADMIN_PERM,
35455e23
EBE		 8888 },
8889 {
8890 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_CLEAR,
ef6243ac 8891 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
35455e23 8892 .doit = devlink_nl_cmd_health_reporter_dump_clear_doit,
35455e23 8893 .flags = GENL_ADMIN_PERM,
f4f54166 8894 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
35455e23
EBE		 8895 DEVLINK_NL_FLAG_NO_LOCK,
8896 },
e2ce94dc
JP		 8897 {
8898 .cmd = DEVLINK_CMD_HEALTH_REPORTER_TEST,
8899 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
8900 .doit = devlink_nl_cmd_health_reporter_test_doit,
8901 .flags = GENL_ADMIN_PERM,
8902 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
8903 DEVLINK_NL_FLAG_NO_LOCK,
8904 },
76726ccb
JK		 8905 {
8906 .cmd = DEVLINK_CMD_FLASH_UPDATE,
ef6243ac 8907 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
76726ccb 8908 .doit = devlink_nl_cmd_flash_update,
76726ccb 8909 .flags = GENL_ADMIN_PERM,
76726ccb 8910 },
0f420b6c
IS		 8911 {
8912 .cmd = DEVLINK_CMD_TRAP_GET,
8913 .doit = devlink_nl_cmd_trap_get_doit,
8914 .dumpit = devlink_nl_cmd_trap_get_dumpit,
0f420b6c
IS		 8915 /* can be retrieved by unprivileged users */
8916 },
8917 {
8918 .cmd = DEVLINK_CMD_TRAP_SET,
8919 .doit = devlink_nl_cmd_trap_set_doit,
8920 .flags = GENL_ADMIN_PERM,
0f420b6c
IS		 8921 },
8922 {
8923 .cmd = DEVLINK_CMD_TRAP_GROUP_GET,
8924 .doit = devlink_nl_cmd_trap_group_get_doit,
8925 .dumpit = devlink_nl_cmd_trap_group_get_dumpit,
0f420b6c
IS		 8926 /* can be retrieved by unprivileged users */
8927 },
8928 {
8929 .cmd = DEVLINK_CMD_TRAP_GROUP_SET,
8930 .doit = devlink_nl_cmd_trap_group_set_doit,
8931 .flags = GENL_ADMIN_PERM,
0f420b6c 8932 },
1e8c6619
IS		 8933 {
8934 .cmd = DEVLINK_CMD_TRAP_POLICER_GET,
8935 .doit = devlink_nl_cmd_trap_policer_get_doit,
8936 .dumpit = devlink_nl_cmd_trap_policer_get_dumpit,
1e8c6619
IS		 8937 /* can be retrieved by unprivileged users */
8938 },
8939 {
8940 .cmd = DEVLINK_CMD_TRAP_POLICER_SET,
8941 .doit = devlink_nl_cmd_trap_policer_set_doit,
8942 .flags = GENL_ADMIN_PERM,
1e8c6619 8943 },
bfcd3a46
JP		 8944};
8945
56989f6d 8946static struct genl_family devlink_nl_family __ro_after_init = {
489111e5
JB		 8947 .name = DEVLINK_GENL_NAME,
8948 .version = DEVLINK_GENL_VERSION,
8949 .maxattr = DEVLINK_ATTR_MAX,
3b0f31f2 8950 .policy = devlink_nl_policy,
489111e5
JB		 8951 .netnsok = true,
8952 .pre_doit = devlink_nl_pre_doit,
8953 .post_doit = devlink_nl_post_doit,
8954 .module = THIS_MODULE,
66a9b928
JK		 8955 .small_ops = devlink_nl_ops,
8956 .n_small_ops = ARRAY_SIZE(devlink_nl_ops),
489111e5
JB		 8957 .mcgrps = devlink_nl_mcgrps,
8958 .n_mcgrps = ARRAY_SIZE(devlink_nl_mcgrps),
8959};
8960
ccdf0721
MS		 8961static bool devlink_reload_actions_valid(const struct devlink_ops *ops)
8962{
dc64cc7c
MS		 8963 const struct devlink_reload_combination *comb;
8964 int i;
8965
ccdf0721
MS		 8966 if (!devlink_reload_supported(ops)) {
8967 if (WARN_ON(ops->reload_actions))
8968 return false;
8969 return true;
8970 }
8971
8972 if (WARN_ON(!ops->reload_actions ||
8973 ops->reload_actions & BIT(DEVLINK_RELOAD_ACTION_UNSPEC) ||
8974 ops->reload_actions >= BIT(__DEVLINK_RELOAD_ACTION_MAX)))
8975 return false;
dc64cc7c
MS		 8976
8977 if (WARN_ON(ops->reload_limits & BIT(DEVLINK_RELOAD_LIMIT_UNSPEC) ||
8978 ops->reload_limits >= BIT(__DEVLINK_RELOAD_LIMIT_MAX)))
8979 return false;
8980
8981 for (i = 0; i < ARRAY_SIZE(devlink_reload_invalid_combinations); i++) {
8982 comb = &devlink_reload_invalid_combinations[i];
8983 if (ops->reload_actions == BIT(comb->action) &&
8984 ops->reload_limits == BIT(comb->limit))
8985 return false;
8986 }
ccdf0721
MS		 8987 return true;
8988}
8989
bd032e35
LR		 8990/**
8991 * devlink_set_features - Set devlink supported features
8992 *
8993 * @devlink: devlink
8994 * @features: devlink support features
8995 *
8996 * This interface allows us to set reload ops separatelly from
8997 * the devlink_alloc.
8998 */
8999void devlink_set_features(struct devlink *devlink, u64 features)
9000{
9001 ASSERT_DEVLINK_NOT_REGISTERED(devlink);
9002
9003 WARN_ON(features & DEVLINK_F_RELOAD &&
9004 !devlink_reload_supported(devlink->ops));
9005 devlink->features = features;
9006}
9007EXPORT_SYMBOL_GPL(devlink_set_features);
9008
bfcd3a46 9009/**
26713455
LR		 9010 * devlink_alloc_ns - Allocate new devlink instance resources
9011 * in specific namespace
bfcd3a46
JP		 9012 *
9013 * @ops: ops
9014 * @priv_size: size of user private data
26713455 9015 * @net: net namespace
919d13a7 9016 * @dev: parent device
bfcd3a46
JP		 9017 *
9018 * Allocate new devlink instance resources, including devlink index
9019 * and name.
9020 */
26713455 9021struct devlink *devlink_alloc_ns(const struct devlink_ops *ops,
919d13a7
LR		 9022 size_t priv_size, struct net *net,
9023 struct device *dev)
bfcd3a46
JP		 9024{
9025 struct devlink *devlink;
11a861d7
LR		 9026 static u32 last_id;
9027 int ret;
bfcd3a46 9028
919d13a7 9029 WARN_ON(!ops || !dev);
ccdf0721
MS		 9030 if (!devlink_reload_actions_valid(ops))
9031 return NULL;
9032
bfcd3a46
JP		 9033 devlink = kzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL);
9034 if (!devlink)
9035 return NULL;
919d13a7 9036
11a861d7
LR		 9037 ret = xa_alloc_cyclic(&devlinks, &devlink->index, devlink, xa_limit_31b,
9038 &last_id, GFP_KERNEL);
9039 if (ret < 0) {
9040 kfree(devlink);
9041 return NULL;
9042 }
9043
919d13a7 9044 devlink->dev = dev;
bfcd3a46 9045 devlink->ops = ops;
12102436 9046 xa_init_flags(&devlink->snapshot_ids, XA_FLAGS_ALLOC);
26713455 9047 write_pnet(&devlink->_net, net);
bfcd3a46 9048 INIT_LIST_HEAD(&devlink->port_list);
4677efc4 9049 INIT_LIST_HEAD(&devlink->rate_list);
bf797471 9050 INIT_LIST_HEAD(&devlink->sb_list);
1555d204 9051 INIT_LIST_HEAD_RCU(&devlink->dpipe_table_list);
d9f9b9a4 9052 INIT_LIST_HEAD(&devlink->resource_list);
eabaef18 9053 INIT_LIST_HEAD(&devlink->param_list);
b16ebe92 9054 INIT_LIST_HEAD(&devlink->region_list);
a0bdcc59 9055 INIT_LIST_HEAD(&devlink->reporter_list);
0f420b6c
IS		 9056 INIT_LIST_HEAD(&devlink->trap_list);
9057 INIT_LIST_HEAD(&devlink->trap_group_list);
1e8c6619 9058 INIT_LIST_HEAD(&devlink->trap_policer_list);
2406e7e5 9059 mutex_init(&devlink->lock);
b587bdaf 9060 mutex_init(&devlink->reporters_lock);
437ebfd9
LR		 9061 refcount_set(&devlink->refcount, 1);
9062 init_completion(&devlink->comp);
9063
bfcd3a46
JP		 9064 return devlink;
9065}
26713455 9066EXPORT_SYMBOL_GPL(devlink_alloc_ns);
bfcd3a46 9067
cf530217
LR		 9068static void
9069devlink_trap_policer_notify(struct devlink *devlink,
9070 const struct devlink_trap_policer_item *policer_item,
9071 enum devlink_command cmd);
9072static void
9073devlink_trap_group_notify(struct devlink *devlink,
9074 const struct devlink_trap_group_item *group_item,
9075 enum devlink_command cmd);
9076static void devlink_trap_notify(struct devlink *devlink,
9077 const struct devlink_trap_item *trap_item,
9078 enum devlink_command cmd);
9079
9080static void devlink_notify_register(struct devlink *devlink)
9081{
9082 struct devlink_trap_policer_item *policer_item;
9083 struct devlink_trap_group_item *group_item;
99ad92ef 9084 struct devlink_param_item *param_item;
cf530217
LR		 9085 struct devlink_trap_item *trap_item;
9086 struct devlink_port *devlink_port;
ef91abfb
LR		 9087 struct devlink_rate *rate_node;
9088 struct devlink_region *region;
cf530217
LR		 9089
9090 devlink_notify(devlink, DEVLINK_CMD_NEW);
9091 list_for_each_entry(devlink_port, &devlink->port_list, list)
9092 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
9093
9094 list_for_each_entry(policer_item, &devlink->trap_policer_list, list)
9095 devlink_trap_policer_notify(devlink, policer_item,
9096 DEVLINK_CMD_TRAP_POLICER_NEW);
9097
9098 list_for_each_entry(group_item, &devlink->trap_group_list, list)
9099 devlink_trap_group_notify(devlink, group_item,
9100 DEVLINK_CMD_TRAP_GROUP_NEW);
9101
9102 list_for_each_entry(trap_item, &devlink->trap_list, list)
9103 devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_NEW);
9104
ef91abfb
LR		 9105 list_for_each_entry(rate_node, &devlink->rate_list, list)
9106 devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_NEW);
9107
9108 list_for_each_entry(region, &devlink->region_list, list)
9109 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
9110
99ad92ef
LR		 9111 list_for_each_entry(param_item, &devlink->param_list, list)
9112 devlink_param_notify(devlink, 0, param_item,
9113 DEVLINK_CMD_PARAM_NEW);
cf530217
LR		 9114}
9115
9116static void devlink_notify_unregister(struct devlink *devlink)
9117{
9118 struct devlink_trap_policer_item *policer_item;
9119 struct devlink_trap_group_item *group_item;
99ad92ef 9120 struct devlink_param_item *param_item;
cf530217
LR		 9121 struct devlink_trap_item *trap_item;
9122 struct devlink_port *devlink_port;
ef91abfb
LR		 9123 struct devlink_rate *rate_node;
9124 struct devlink_region *region;
cf530217 9125
99ad92ef
LR		 9126 list_for_each_entry_reverse(param_item, &devlink->param_list, list)
9127 devlink_param_notify(devlink, 0, param_item,
9128 DEVLINK_CMD_PARAM_DEL);
cf530217 9129
ef91abfb
LR		 9130 list_for_each_entry_reverse(region, &devlink->region_list, list)
9131 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL);
9132
9133 list_for_each_entry_reverse(rate_node, &devlink->rate_list, list)
9134 devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_DEL);
9135
cf530217
LR		 9136 list_for_each_entry_reverse(trap_item, &devlink->trap_list, list)
9137 devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_DEL);
9138
9139 list_for_each_entry_reverse(group_item, &devlink->trap_group_list, list)
9140 devlink_trap_group_notify(devlink, group_item,
9141 DEVLINK_CMD_TRAP_GROUP_DEL);
9142 list_for_each_entry_reverse(policer_item, &devlink->trap_policer_list,
9143 list)
9144 devlink_trap_policer_notify(devlink, policer_item,
9145 DEVLINK_CMD_TRAP_POLICER_DEL);
9146
9147 list_for_each_entry_reverse(devlink_port, &devlink->port_list, list)
9148 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
9149 devlink_notify(devlink, DEVLINK_CMD_DEL);
9150}
9151
bfcd3a46
JP		 9152/**
9153 * devlink_register - Register devlink instance
9154 *
9155 * @devlink: devlink
9156 */
db4278c5 9157void devlink_register(struct devlink *devlink)
bfcd3a46 9158{
b88f7b12
LR		 9159 ASSERT_DEVLINK_NOT_REGISTERED(devlink);
9160 /* Make sure that we are in .probe() routine */
b88f7b12 9161
6553e561 9162 mutex_lock(&devlink_mutex);
11a861d7 9163 xa_set_mark(&devlinks, devlink->index, DEVLINK_REGISTERED);
cf530217 9164 devlink_notify_register(devlink);
bfcd3a46 9165 mutex_unlock(&devlink_mutex);
bfcd3a46
JP		 9166}
9167EXPORT_SYMBOL_GPL(devlink_register);
9168
9169/**
9170 * devlink_unregister - Unregister devlink instance
9171 *
9172 * @devlink: devlink
9173 */
9174void devlink_unregister(struct devlink *devlink)
9175{
b88f7b12
LR		 9176 ASSERT_DEVLINK_REGISTERED(devlink);
9177 /* Make sure that we are in .remove() routine */
b88f7b12 9178
437ebfd9
LR		 9179 devlink_put(devlink);
9180 wait_for_completion(&devlink->comp);
9181
bfcd3a46 9182 mutex_lock(&devlink_mutex);
cf530217 9183 devlink_notify_unregister(devlink);
11a861d7 9184 xa_clear_mark(&devlinks, devlink->index, DEVLINK_REGISTERED);
bfcd3a46
JP		 9185 mutex_unlock(&devlink_mutex);
9186}
9187EXPORT_SYMBOL_GPL(devlink_unregister);
9188
9189/**
9190 * devlink_free - Free devlink instance resources
9191 *
9192 * @devlink: devlink
9193 */
9194void devlink_free(struct devlink *devlink)
9195{
b88f7b12
LR		 9196 ASSERT_DEVLINK_NOT_REGISTERED(devlink);
9197
b587bdaf 9198 mutex_destroy(&devlink->reporters_lock);
375cf8c6 9199 mutex_destroy(&devlink->lock);
1e8c6619 9200 WARN_ON(!list_empty(&devlink->trap_policer_list));
0f420b6c
IS		 9201 WARN_ON(!list_empty(&devlink->trap_group_list));
9202 WARN_ON(!list_empty(&devlink->trap_list));
b904aada
PP		 9203 WARN_ON(!list_empty(&devlink->reporter_list));
9204 WARN_ON(!list_empty(&devlink->region_list));
9205 WARN_ON(!list_empty(&devlink->param_list));
9206 WARN_ON(!list_empty(&devlink->resource_list));
9207 WARN_ON(!list_empty(&devlink->dpipe_table_list));
9208 WARN_ON(!list_empty(&devlink->sb_list));
4677efc4 9209 WARN_ON(!list_empty(&devlink->rate_list));
b904aada
PP		 9210 WARN_ON(!list_empty(&devlink->port_list));
9211
12102436 9212 xa_destroy(&devlink->snapshot_ids);
11a861d7 9213 xa_erase(&devlinks, devlink->index);
12102436 9214
bfcd3a46
JP		 9215 kfree(devlink);
9216}
9217EXPORT_SYMBOL_GPL(devlink_free);
9218
136bf27f
JP		 9219static void devlink_port_type_warn(struct work_struct *work)
9220{
9221 WARN(true, "Type was not set for devlink port.");
9222}
9223
9224static bool devlink_port_type_should_warn(struct devlink_port *devlink_port)
9225{
9226 /* Ignore CPU and DSA flavours. */
9227 return devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_CPU &&
cf116634
AL		 9228 devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_DSA &&
9229 devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_UNUSED;
136bf27f
JP		 9230}
9231
4c582234 9232#define DEVLINK_PORT_TYPE_WARN_TIMEOUT (HZ * 3600)
136bf27f
JP		 9233
9234static void devlink_port_type_warn_schedule(struct devlink_port *devlink_port)
9235{
9236 if (!devlink_port_type_should_warn(devlink_port))
9237 return;
9238 /* Schedule a work to WARN in case driver does not set port
9239 * type within timeout.
9240 */
9241 schedule_delayed_work(&devlink_port->type_warn_dw,
9242 DEVLINK_PORT_TYPE_WARN_TIMEOUT);
9243}
9244
9245static void devlink_port_type_warn_cancel(struct devlink_port *devlink_port)
9246{
9247 if (!devlink_port_type_should_warn(devlink_port))
9248 return;
9249 cancel_delayed_work_sync(&devlink_port->type_warn_dw);
9250}
9251
bfcd3a46
JP		 9252/**
9253 * devlink_port_register - Register devlink port
9254 *
9255 * @devlink: devlink
9256 * @devlink_port: devlink port
eeaadd82 9257 * @port_index: driver-specific numerical identifier of the port
bfcd3a46
JP		 9258 *
9259 * Register devlink port with provided port index. User can use
9260 * any indexing, even hw-related one. devlink_port structure
9261 * is convenient to be embedded inside user driver private structure.
9262 * Note that the caller should take care of zeroing the devlink_port
9263 * structure.
9264 */
9265int devlink_port_register(struct devlink *devlink,
9266 struct devlink_port *devlink_port,
9267 unsigned int port_index)
9268{
2406e7e5 9269 mutex_lock(&devlink->lock);
bfcd3a46 9270 if (devlink_port_index_exists(devlink, port_index)) {
2406e7e5 9271 mutex_unlock(&devlink->lock);
bfcd3a46
JP		 9272 return -EEXIST;
9273 }
d7907a2b
LR		 9274
9275 WARN_ON(devlink_port->devlink);
bfcd3a46
JP		 9276 devlink_port->devlink = devlink;
9277 devlink_port->index = port_index;
b8f97554 9278 spin_lock_init(&devlink_port->type_lock);
79604c5d
PP		 9279 INIT_LIST_HEAD(&devlink_port->reporter_list);
9280 mutex_init(&devlink_port->reporters_lock);
bfcd3a46 9281 list_add_tail(&devlink_port->list, &devlink->port_list);
39e6160e 9282 INIT_LIST_HEAD(&devlink_port->param_list);
544e7c33 9283 INIT_LIST_HEAD(&devlink_port->region_list);
2406e7e5 9284 mutex_unlock(&devlink->lock);
136bf27f
JP		 9285 INIT_DELAYED_WORK(&devlink_port->type_warn_dw, &devlink_port_type_warn);
9286 devlink_port_type_warn_schedule(devlink_port);
bfcd3a46
JP		 9287 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
9288 return 0;
9289}
9290EXPORT_SYMBOL_GPL(devlink_port_register);
9291
9292/**
9293 * devlink_port_unregister - Unregister devlink port
9294 *
9295 * @devlink_port: devlink port
9296 */
9297void devlink_port_unregister(struct devlink_port *devlink_port)
9298{
2406e7e5
AS		 9299 struct devlink *devlink = devlink_port->devlink;
9300
136bf27f 9301 devlink_port_type_warn_cancel(devlink_port);
bfcd3a46 9302 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
2406e7e5 9303 mutex_lock(&devlink->lock);
bfcd3a46 9304 list_del(&devlink_port->list);
2406e7e5 9305 mutex_unlock(&devlink->lock);
79604c5d 9306 WARN_ON(!list_empty(&devlink_port->reporter_list));
544e7c33 9307 WARN_ON(!list_empty(&devlink_port->region_list));
79604c5d 9308 mutex_destroy(&devlink_port->reporters_lock);
bfcd3a46
JP		 9309}
9310EXPORT_SYMBOL_GPL(devlink_port_unregister);
9311
9312static void __devlink_port_type_set(struct devlink_port *devlink_port,
9313 enum devlink_port_type type,
9314 void *type_dev)
9315{
d7907a2b 9316 if (WARN_ON(!devlink_port->devlink))
2b239e70 9317 return;
136bf27f 9318 devlink_port_type_warn_cancel(devlink_port);
0f420b6c 9319 spin_lock_bh(&devlink_port->type_lock);
bfcd3a46
JP		 9320 devlink_port->type = type;
9321 devlink_port->type_dev = type_dev;
0f420b6c 9322 spin_unlock_bh(&devlink_port->type_lock);
bfcd3a46
JP		 9323 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
9324}
9325
3ea87ca7
JK		 9326static void devlink_port_type_netdev_checks(struct devlink_port *devlink_port,
9327 struct net_device *netdev)
bfcd3a46 9328{
119c0b57
JP		 9329 const struct net_device_ops *ops = netdev->netdev_ops;
9330
746364f2
JP		 9331 /* If driver registers devlink port, it should set devlink port
9332 * attributes accordingly so the compat functions are called
9333 * and the original ops are not used.
9334 */
119c0b57 9335 if (ops->ndo_get_phys_port_name) {
746364f2
JP		 9336 /* Some drivers use the same set of ndos for netdevs
9337 * that have devlink_port registered and also for
9338 * those who don't. Make sure that ndo_get_phys_port_name
9339 * returns -EOPNOTSUPP here in case it is defined.
9340 * Warn if not.
9341 */
746364f2
JP		 9342 char name[IFNAMSIZ];
9343 int err;
9344
9345 err = ops->ndo_get_phys_port_name(netdev, name, sizeof(name));
9346 WARN_ON(err != -EOPNOTSUPP);
9347 }
119c0b57
JP		 9348 if (ops->ndo_get_port_parent_id) {
9349 /* Some drivers use the same set of ndos for netdevs
9350 * that have devlink_port registered and also for
9351 * those who don't. Make sure that ndo_get_port_parent_id
9352 * returns -EOPNOTSUPP here in case it is defined.
9353 * Warn if not.
9354 */
9355 struct netdev_phys_item_id ppid;
9356 int err;
9357
9358 err = ops->ndo_get_port_parent_id(netdev, &ppid);
9359 WARN_ON(err != -EOPNOTSUPP);
9360 }
3ea87ca7
JK		 9361}
9362
9363/**
9364 * devlink_port_type_eth_set - Set port type to Ethernet
9365 *
9366 * @devlink_port: devlink port
9367 * @netdev: related netdevice
9368 */
9369void devlink_port_type_eth_set(struct devlink_port *devlink_port,
9370 struct net_device *netdev)
9371{
9372 if (netdev)
9373 devlink_port_type_netdev_checks(devlink_port, netdev);
9374 else
9375 dev_warn(devlink_port->devlink->dev,
9376 "devlink port type for port %d set to Ethernet without a software interface reference, device type not supported by the kernel?\n",
9377 devlink_port->index);
9378
773b1f38 9379 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH, netdev);
bfcd3a46
JP		 9380}
9381EXPORT_SYMBOL_GPL(devlink_port_type_eth_set);
9382
9383/**
9384 * devlink_port_type_ib_set - Set port type to InfiniBand
9385 *
9386 * @devlink_port: devlink port
9387 * @ibdev: related IB device
9388 */
9389void devlink_port_type_ib_set(struct devlink_port *devlink_port,
9390 struct ib_device *ibdev)
9391{
773b1f38 9392 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_IB, ibdev);
bfcd3a46
JP		 9393}
9394EXPORT_SYMBOL_GPL(devlink_port_type_ib_set);
9395
9396/**
9397 * devlink_port_type_clear - Clear port type
9398 *
9399 * @devlink_port: devlink port
9400 */
9401void devlink_port_type_clear(struct devlink_port *devlink_port)
9402{
773b1f38 9403 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET, NULL);
136bf27f 9404 devlink_port_type_warn_schedule(devlink_port);
bfcd3a46
JP		 9405}
9406EXPORT_SYMBOL_GPL(devlink_port_type_clear);
9407
378ef01b 9408static int __devlink_port_attrs_set(struct devlink_port *devlink_port,
71ad8d55 9409 enum devlink_port_flavour flavour)
378ef01b
PP		 9410{
9411 struct devlink_port_attrs *attrs = &devlink_port->attrs;
9412
10a429ba 9413 devlink_port->attrs_set = true;
378ef01b 9414 attrs->flavour = flavour;
71ad8d55 9415 if (attrs->switch_id.id_len) {
46737a19 9416 devlink_port->switch_port = true;
71ad8d55
DR		 9417 if (WARN_ON(attrs->switch_id.id_len > MAX_PHYS_ITEM_ID_LEN))
9418 attrs->switch_id.id_len = MAX_PHYS_ITEM_ID_LEN;
378ef01b 9419 } else {
46737a19 9420 devlink_port->switch_port = false;
378ef01b
PP		 9421 }
9422 return 0;
9423}
9424
bfcd3a46 9425/**
b9ffcbaf 9426 * devlink_port_attrs_set - Set port attributes
bfcd3a46
JP		 9427 *
9428 * @devlink_port: devlink port
71ad8d55 9429 * @attrs: devlink port attrs
bfcd3a46 9430 */
b9ffcbaf 9431void devlink_port_attrs_set(struct devlink_port *devlink_port,
71ad8d55 9432 struct devlink_port_attrs *attrs)
bfcd3a46 9433{
378ef01b 9434 int ret;
b9ffcbaf 9435
d7907a2b 9436 if (WARN_ON(devlink_port->devlink))
9f73bd1c 9437 return;
71ad8d55
DR		 9438 devlink_port->attrs = *attrs;
9439 ret = __devlink_port_attrs_set(devlink_port, attrs->flavour);
378ef01b 9440 if (ret)
45b86112 9441 return;
a0f49b54 9442 WARN_ON(attrs->splittable && attrs->split);
bfcd3a46 9443}
b9ffcbaf 9444EXPORT_SYMBOL_GPL(devlink_port_attrs_set);
bfcd3a46 9445
98fd2d65
PP		 9446/**
9447 * devlink_port_attrs_pci_pf_set - Set PCI PF port attributes
9448 *
9449 * @devlink_port: devlink port
3a2d9588 9450 * @controller: associated controller number for the devlink port instance
98fd2d65 9451 * @pf: associated PF for the devlink port instance
05b595e9 9452 * @external: indicates if the port is for an external controller
98fd2d65 9453 */
3a2d9588
PP		 9454void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port, u32 controller,
9455 u16 pf, bool external)
98fd2d65
PP		 9456{
9457 struct devlink_port_attrs *attrs = &devlink_port->attrs;
9458 int ret;
9459
d7907a2b 9460 if (WARN_ON(devlink_port->devlink))
9f73bd1c 9461 return;
98fd2d65 9462 ret = __devlink_port_attrs_set(devlink_port,
71ad8d55 9463 DEVLINK_PORT_FLAVOUR_PCI_PF);
98fd2d65
PP		 9464 if (ret)
9465 return;
3a2d9588 9466 attrs->pci_pf.controller = controller;
98fd2d65 9467 attrs->pci_pf.pf = pf;
05b595e9 9468 attrs->pci_pf.external = external;
98fd2d65
PP		 9469}
9470EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_pf_set);
9471
e41b6bf3
PP		 9472/**
9473 * devlink_port_attrs_pci_vf_set - Set PCI VF port attributes
9474 *
9475 * @devlink_port: devlink port
3a2d9588 9476 * @controller: associated controller number for the devlink port instance
e41b6bf3
PP		 9477 * @pf: associated PF for the devlink port instance
9478 * @vf: associated VF of a PF for the devlink port instance
05b595e9 9479 * @external: indicates if the port is for an external controller
e41b6bf3 9480 */
3a2d9588 9481void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port, u32 controller,
05b595e9 9482 u16 pf, u16 vf, bool external)
e41b6bf3
PP		 9483{
9484 struct devlink_port_attrs *attrs = &devlink_port->attrs;
9485 int ret;
9486
d7907a2b 9487 if (WARN_ON(devlink_port->devlink))
9f73bd1c 9488 return;
e41b6bf3 9489 ret = __devlink_port_attrs_set(devlink_port,
71ad8d55 9490 DEVLINK_PORT_FLAVOUR_PCI_VF);
e41b6bf3
PP		 9491 if (ret)
9492 return;
3a2d9588 9493 attrs->pci_vf.controller = controller;
e41b6bf3
PP		 9494 attrs->pci_vf.pf = pf;
9495 attrs->pci_vf.vf = vf;
05b595e9 9496 attrs->pci_vf.external = external;
e41b6bf3
PP		 9497}
9498EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_vf_set);
9499
b8288837
PP		 9500/**
9501 * devlink_port_attrs_pci_sf_set - Set PCI SF port attributes
9502 *
9503 * @devlink_port: devlink port
9504 * @controller: associated controller number for the devlink port instance
9505 * @pf: associated PF for the devlink port instance
9506 * @sf: associated SF of a PF for the devlink port instance
a1ab3e45 9507 * @external: indicates if the port is for an external controller
b8288837
PP		 9508 */
9509void devlink_port_attrs_pci_sf_set(struct devlink_port *devlink_port, u32 controller,
a1ab3e45 9510 u16 pf, u32 sf, bool external)
b8288837
PP		 9511{
9512 struct devlink_port_attrs *attrs = &devlink_port->attrs;
9513 int ret;
9514
d7907a2b 9515 if (WARN_ON(devlink_port->devlink))
b8288837
PP		 9516 return;
9517 ret = __devlink_port_attrs_set(devlink_port,
9518 DEVLINK_PORT_FLAVOUR_PCI_SF);
9519 if (ret)
9520 return;
9521 attrs->pci_sf.controller = controller;
9522 attrs->pci_sf.pf = pf;
9523 attrs->pci_sf.sf = sf;
a1ab3e45 9524 attrs->pci_sf.external = external;
b8288837
PP		 9525}
9526EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_sf_set);
9527
4677efc4
DL		 9528/**
9529 * devlink_rate_leaf_create - create devlink rate leaf
9530 *
9531 * @devlink_port: devlink port object to create rate object on
9532 * @priv: driver private data
9533 *
9534 * Create devlink rate object of type leaf on provided @devlink_port.
9535 * Throws call trace if @devlink_port already has a devlink rate object.
9536 *
9537 * Context: Takes and release devlink->lock <mutex>.
9538 *
9539 * Return: -ENOMEM if failed to allocate rate object, 0 otherwise.
9540 */
9541int
9542devlink_rate_leaf_create(struct devlink_port *devlink_port, void *priv)
9543{
9544 struct devlink *devlink = devlink_port->devlink;
9545 struct devlink_rate *devlink_rate;
9546
9547 devlink_rate = kzalloc(sizeof(*devlink_rate), GFP_KERNEL);
9548 if (!devlink_rate)
9549 return -ENOMEM;
9550
9551 mutex_lock(&devlink->lock);
9552 WARN_ON(devlink_port->devlink_rate);
9553 devlink_rate->type = DEVLINK_RATE_TYPE_LEAF;
9554 devlink_rate->devlink = devlink;
9555 devlink_rate->devlink_port = devlink_port;
9556 devlink_rate->priv = priv;
9557 list_add_tail(&devlink_rate->list, &devlink->rate_list);
9558 devlink_port->devlink_rate = devlink_rate;
9559 devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_NEW);
9560 mutex_unlock(&devlink->lock);
9561
9562 return 0;
9563}
9564EXPORT_SYMBOL_GPL(devlink_rate_leaf_create);
9565
9566/**
9567 * devlink_rate_leaf_destroy - destroy devlink rate leaf
9568 *
9569 * @devlink_port: devlink port linked to the rate object
9570 *
9571 * Context: Takes and release devlink->lock <mutex>.
9572 */
9573void devlink_rate_leaf_destroy(struct devlink_port *devlink_port)
9574{
9575 struct devlink_rate *devlink_rate = devlink_port->devlink_rate;
9576 struct devlink *devlink = devlink_port->devlink;
9577
9578 if (!devlink_rate)
9579 return;
9580
9581 mutex_lock(&devlink->lock);
9582 devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_DEL);
1321ed5e
DL		 9583 if (devlink_rate->parent)
9584 refcount_dec(&devlink_rate->parent->refcnt);
4677efc4
DL		 9585 list_del(&devlink_rate->list);
9586 devlink_port->devlink_rate = NULL;
9587 mutex_unlock(&devlink->lock);
9588 kfree(devlink_rate);
9589}
9590EXPORT_SYMBOL_GPL(devlink_rate_leaf_destroy);
9591
a8ecb93e
DL		 9592/**
9593 * devlink_rate_nodes_destroy - destroy all devlink rate nodes on device
9594 *
9595 * @devlink: devlink instance
9596 *
d7555984
DL		 9597 * Unset parent for all rate objects and destroy all rate nodes
9598 * on specified device.
a8ecb93e
DL		 9599 *
9600 * Context: Takes and release devlink->lock <mutex>.
9601 */
9602void devlink_rate_nodes_destroy(struct devlink *devlink)
9603{
9604 static struct devlink_rate *devlink_rate, *tmp;
9605 const struct devlink_ops *ops = devlink->ops;
9606
9607 mutex_lock(&devlink->lock);
d7555984
DL		 9608 list_for_each_entry(devlink_rate, &devlink->rate_list, list) {
9609 if (!devlink_rate->parent)
9610 continue;
9611
9612 refcount_dec(&devlink_rate->parent->refcnt);
9613 if (devlink_rate_is_leaf(devlink_rate))
9614 ops->rate_leaf_parent_set(devlink_rate, NULL, devlink_rate->priv,
9615 NULL, NULL);
9616 else if (devlink_rate_is_node(devlink_rate))
9617 ops->rate_node_parent_set(devlink_rate, NULL, devlink_rate->priv,
9618 NULL, NULL);
9619 }
a8ecb93e
DL		 9620 list_for_each_entry_safe(devlink_rate, tmp, &devlink->rate_list, list) {
9621 if (devlink_rate_is_node(devlink_rate)) {
9622 ops->rate_node_del(devlink_rate, devlink_rate->priv, NULL);
9623 list_del(&devlink_rate->list);
9624 kfree(devlink_rate->name);
9625 kfree(devlink_rate);
9626 }
9627 }
9628 mutex_unlock(&devlink->lock);
9629}
9630EXPORT_SYMBOL_GPL(devlink_rate_nodes_destroy);
9631
af3836df
JP		 9632static int __devlink_port_phys_port_name_get(struct devlink_port *devlink_port,
9633 char *name, size_t len)
08474c1a
JP		 9634{
9635 struct devlink_port_attrs *attrs = &devlink_port->attrs;
9636 int n = 0;
9637
10a429ba 9638 if (!devlink_port->attrs_set)
08474c1a
JP		 9639 return -EOPNOTSUPP;
9640
9641 switch (attrs->flavour) {
9642 case DEVLINK_PORT_FLAVOUR_PHYSICAL:
f285f37c
JP		 9643 n = snprintf(name, len, "p%u", attrs->phys.port_number);
9644 if (n < len && attrs->split)
9645 n += snprintf(name + n, len - n, "s%u",
9646 attrs->phys.split_subport_number);
08474c1a
JP		 9647 break;
9648 case DEVLINK_PORT_FLAVOUR_CPU:
9649 case DEVLINK_PORT_FLAVOUR_DSA:
cf116634 9650 case DEVLINK_PORT_FLAVOUR_UNUSED:
08474c1a
JP		 9651 /* As CPU and DSA ports do not have a netdevice associated
9652 * case should not ever happen.
9653 */
9654 WARN_ON(1);
9655 return -EINVAL;
98fd2d65 9656 case DEVLINK_PORT_FLAVOUR_PCI_PF:
66b17082
PP		 9657 if (attrs->pci_pf.external) {
9658 n = snprintf(name, len, "c%u", attrs->pci_pf.controller);
9659 if (n >= len)
9660 return -EINVAL;
9661 len -= n;
9662 name += n;
9663 }
98fd2d65
PP		 9664 n = snprintf(name, len, "pf%u", attrs->pci_pf.pf);
9665 break;
e41b6bf3 9666 case DEVLINK_PORT_FLAVOUR_PCI_VF:
66b17082
PP		 9667 if (attrs->pci_vf.external) {
9668 n = snprintf(name, len, "c%u", attrs->pci_vf.controller);
9669 if (n >= len)
9670 return -EINVAL;
9671 len -= n;
9672 name += n;
9673 }
e41b6bf3
PP		 9674 n = snprintf(name, len, "pf%uvf%u",
9675 attrs->pci_vf.pf, attrs->pci_vf.vf);
9676 break;
b8288837 9677 case DEVLINK_PORT_FLAVOUR_PCI_SF:
a1ab3e45
PP		 9678 if (attrs->pci_sf.external) {
9679 n = snprintf(name, len, "c%u", attrs->pci_sf.controller);
9680 if (n >= len)
9681 return -EINVAL;
9682 len -= n;
9683 name += n;
9684 }
b8288837
PP		 9685 n = snprintf(name, len, "pf%usf%u", attrs->pci_sf.pf,
9686 attrs->pci_sf.sf);
9687 break;
149ea30f
PP		 9688 case DEVLINK_PORT_FLAVOUR_VIRTUAL:
9689 return -EOPNOTSUPP;
08474c1a
JP		 9690 }
9691
9692 if (n >= len)
9693 return -EINVAL;
9694
9695 return 0;
9696}
af3836df 9697
bf797471
JP		 9698int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
9699 u32 size, u16 ingress_pools_count,
9700 u16 egress_pools_count, u16 ingress_tc_count,
9701 u16 egress_tc_count)
9702{
9703 struct devlink_sb *devlink_sb;
9704 int err = 0;
9705
2406e7e5 9706 mutex_lock(&devlink->lock);
bf797471
JP		 9707 if (devlink_sb_index_exists(devlink, sb_index)) {
9708 err = -EEXIST;
9709 goto unlock;
9710 }
9711
9712 devlink_sb = kzalloc(sizeof(*devlink_sb), GFP_KERNEL);
9713 if (!devlink_sb) {
9714 err = -ENOMEM;
9715 goto unlock;
9716 }
9717 devlink_sb->index = sb_index;
9718 devlink_sb->size = size;
9719 devlink_sb->ingress_pools_count = ingress_pools_count;
9720 devlink_sb->egress_pools_count = egress_pools_count;
9721 devlink_sb->ingress_tc_count = ingress_tc_count;
9722 devlink_sb->egress_tc_count = egress_tc_count;
9723 list_add_tail(&devlink_sb->list, &devlink->sb_list);
9724unlock:
2406e7e5 9725 mutex_unlock(&devlink->lock);
bf797471
JP		 9726 return err;
9727}
9728EXPORT_SYMBOL_GPL(devlink_sb_register);
9729
9730void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index)
9731{
9732 struct devlink_sb *devlink_sb;
9733
2406e7e5 9734 mutex_lock(&devlink->lock);
bf797471
JP		 9735 devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
9736 WARN_ON(!devlink_sb);
9737 list_del(&devlink_sb->list);
2406e7e5 9738 mutex_unlock(&devlink->lock);
bf797471
JP		 9739 kfree(devlink_sb);
9740}
9741EXPORT_SYMBOL_GPL(devlink_sb_unregister);
9742
1555d204
AS		 9743/**
9744 * devlink_dpipe_headers_register - register dpipe headers
9745 *
9746 * @devlink: devlink
9747 * @dpipe_headers: dpipe header array
9748 *
9749 * Register the headers supported by hardware.
9750 */
9751int devlink_dpipe_headers_register(struct devlink *devlink,
9752 struct devlink_dpipe_headers *dpipe_headers)
9753{
2406e7e5 9754 mutex_lock(&devlink->lock);
1555d204 9755 devlink->dpipe_headers = dpipe_headers;
2406e7e5 9756 mutex_unlock(&devlink->lock);
1555d204
AS		 9757 return 0;
9758}
9759EXPORT_SYMBOL_GPL(devlink_dpipe_headers_register);
9760
9761/**
9762 * devlink_dpipe_headers_unregister - unregister dpipe headers
9763 *
9764 * @devlink: devlink
9765 *
9766 * Unregister the headers supported by hardware.
9767 */
9768void devlink_dpipe_headers_unregister(struct devlink *devlink)
9769{
2406e7e5 9770 mutex_lock(&devlink->lock);
1555d204 9771 devlink->dpipe_headers = NULL;
2406e7e5 9772 mutex_unlock(&devlink->lock);
1555d204
AS		 9773}
9774EXPORT_SYMBOL_GPL(devlink_dpipe_headers_unregister);
9775
9776/**
9777 * devlink_dpipe_table_counter_enabled - check if counter allocation
9778 * required
9779 * @devlink: devlink
9780 * @table_name: tables name
9781 *
9782 * Used by driver to check if counter allocation is required.
9783 * After counter allocation is turned on the table entries
9784 * are updated to include counter statistics.
9785 *
9786 * After that point on the driver must respect the counter
9787 * state so that each entry added to the table is added
9788 * with a counter.
9789 */
9790bool devlink_dpipe_table_counter_enabled(struct devlink *devlink,
9791 const char *table_name)
9792{
9793 struct devlink_dpipe_table *table;
9794 bool enabled;
9795
9796 rcu_read_lock();
9797 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2eb51c75 9798 table_name, devlink);
1555d204
AS		 9799 enabled = false;
9800 if (table)
9801 enabled = table->counters_enabled;
9802 rcu_read_unlock();
9803 return enabled;
9804}
9805EXPORT_SYMBOL_GPL(devlink_dpipe_table_counter_enabled);
9806
9807/**
9808 * devlink_dpipe_table_register - register dpipe table
9809 *
9810 * @devlink: devlink
9811 * @table_name: table name
9812 * @table_ops: table ops
9813 * @priv: priv
1555d204
AS		 9814 * @counter_control_extern: external control for counters
9815 */
9816int devlink_dpipe_table_register(struct devlink *devlink,
9817 const char *table_name,
9818 struct devlink_dpipe_table_ops *table_ops,
ffd3cdcc 9819 void *priv, bool counter_control_extern)
1555d204
AS		 9820{
9821 struct devlink_dpipe_table *table;
6132c1d9 9822 int err = 0;
1555d204 9823
ffd3cdcc
AS		 9824 if (WARN_ON(!table_ops->size_get))
9825 return -EINVAL;
9826
6132c1d9
MB		 9827 mutex_lock(&devlink->lock);
9828
2eb51c75
MB		 9829 if (devlink_dpipe_table_find(&devlink->dpipe_table_list, table_name,
9830 devlink)) {
6132c1d9
MB		 9831 err = -EEXIST;
9832 goto unlock;
9833 }
9834
1555d204 9835 table = kzalloc(sizeof(*table), GFP_KERNEL);
6132c1d9
MB		 9836 if (!table) {
9837 err = -ENOMEM;
9838 goto unlock;
9839 }
1555d204
AS		 9840
9841 table->name = table_name;
9842 table->table_ops = table_ops;
9843 table->priv = priv;
1555d204
AS		 9844 table->counter_control_extern = counter_control_extern;
9845
1555d204 9846 list_add_tail_rcu(&table->list, &devlink->dpipe_table_list);
6132c1d9 9847unlock:
2406e7e5 9848 mutex_unlock(&devlink->lock);
6132c1d9 9849 return err;
1555d204
AS		 9850}
9851EXPORT_SYMBOL_GPL(devlink_dpipe_table_register);
9852
9853/**
9854 * devlink_dpipe_table_unregister - unregister dpipe table
9855 *
9856 * @devlink: devlink
9857 * @table_name: table name
9858 */
9859void devlink_dpipe_table_unregister(struct devlink *devlink,
9860 const char *table_name)
9861{
9862 struct devlink_dpipe_table *table;
9863
2406e7e5 9864 mutex_lock(&devlink->lock);
1555d204 9865 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2eb51c75 9866 table_name, devlink);
1555d204
AS		 9867 if (!table)
9868 goto unlock;
9869 list_del_rcu(&table->list);
2406e7e5 9870 mutex_unlock(&devlink->lock);
1555d204
AS		 9871 kfree_rcu(table, rcu);
9872 return;
9873unlock:
2406e7e5 9874 mutex_unlock(&devlink->lock);
1555d204
AS		 9875}
9876EXPORT_SYMBOL_GPL(devlink_dpipe_table_unregister);
9877
d9f9b9a4
AS		 9878/**
9879 * devlink_resource_register - devlink resource register
9880 *
9881 * @devlink: devlink
9882 * @resource_name: resource's name
d9f9b9a4
AS		 9883 * @resource_size: resource's size
9884 * @resource_id: resource's id
eeaadd82
JK		 9885 * @parent_resource_id: resource's parent id
9886 * @size_params: size parameters
321f7ab0
DR		 9887 *
9888 * Generic resources should reuse the same names across drivers.
9889 * Please see the generic resources list at:
9890 * Documentation/networking/devlink/devlink-resource.rst
d9f9b9a4
AS		 9891 */
9892int devlink_resource_register(struct devlink *devlink,
9893 const char *resource_name,
d9f9b9a4
AS		 9894 u64 resource_size,
9895 u64 resource_id,
9896 u64 parent_resource_id,
fc56be47 9897 const struct devlink_resource_size_params *size_params)
d9f9b9a4
AS		 9898{
9899 struct devlink_resource *resource;
9900 struct list_head *resource_list;
14530746 9901 bool top_hierarchy;
d9f9b9a4
AS		 9902 int err = 0;
9903
14530746
DA		 9904 top_hierarchy = parent_resource_id == DEVLINK_RESOURCE_ID_PARENT_TOP;
9905
d9f9b9a4
AS		 9906 mutex_lock(&devlink->lock);
9907 resource = devlink_resource_find(devlink, NULL, resource_id);
9908 if (resource) {
9909 err = -EINVAL;
9910 goto out;
9911 }
9912
9913 resource = kzalloc(sizeof(*resource), GFP_KERNEL);
9914 if (!resource) {
9915 err = -ENOMEM;
9916 goto out;
9917 }
9918
9919 if (top_hierarchy) {
9920 resource_list = &devlink->resource_list;
9921 } else {
9922 struct devlink_resource *parent_resource;
9923
9924 parent_resource = devlink_resource_find(devlink, NULL,
9925 parent_resource_id);
9926 if (parent_resource) {
9927 resource_list = &parent_resource->resource_list;
9928 resource->parent = parent_resource;
9929 } else {
b75703de 9930 kfree(resource);
d9f9b9a4
AS		 9931 err = -EINVAL;
9932 goto out;
9933 }
9934 }
9935
9936 resource->name = resource_name;
9937 resource->size = resource_size;
9938 resource->size_new = resource_size;
9939 resource->id = resource_id;
d9f9b9a4 9940 resource->size_valid = true;
77d27096
JP		 9941 memcpy(&resource->size_params, size_params,
9942 sizeof(resource->size_params));
d9f9b9a4
AS		 9943 INIT_LIST_HEAD(&resource->resource_list);
9944 list_add_tail(&resource->list, resource_list);
9945out:
9946 mutex_unlock(&devlink->lock);
9947 return err;
9948}
9949EXPORT_SYMBOL_GPL(devlink_resource_register);
9950
4c897cfc
LR		 9951static void devlink_resource_unregister(struct devlink *devlink,
9952 struct devlink_resource *resource)
9953{
9954 struct devlink_resource *tmp, *child_resource;
9955
9956 list_for_each_entry_safe(child_resource, tmp, &resource->resource_list,
9957 list) {
9958 devlink_resource_unregister(devlink, child_resource);
9959 list_del(&child_resource->list);
9960 kfree(child_resource);
9961 }
9962}
9963
d9f9b9a4
AS		 9964/**
9965 * devlink_resources_unregister - free all resources
9966 *
9967 * @devlink: devlink
d9f9b9a4 9968 */
4c897cfc 9969void devlink_resources_unregister(struct devlink *devlink)
d9f9b9a4
AS		 9970{
9971 struct devlink_resource *tmp, *child_resource;
d9f9b9a4 9972
4c897cfc 9973 mutex_lock(&devlink->lock);
d9f9b9a4 9974
4c897cfc
LR		 9975 list_for_each_entry_safe(child_resource, tmp, &devlink->resource_list,
9976 list) {
9977 devlink_resource_unregister(devlink, child_resource);
d9f9b9a4
AS		 9978 list_del(&child_resource->list);
9979 kfree(child_resource);
9980 }
9981
4c897cfc 9982 mutex_unlock(&devlink->lock);
d9f9b9a4
AS		 9983}
9984EXPORT_SYMBOL_GPL(devlink_resources_unregister);
9985
9986/**
9987 * devlink_resource_size_get - get and update size
9988 *
9989 * @devlink: devlink
9990 * @resource_id: the requested resource id
9991 * @p_resource_size: ptr to update
9992 */
9993int devlink_resource_size_get(struct devlink *devlink,
9994 u64 resource_id,
9995 u64 *p_resource_size)
9996{
9997 struct devlink_resource *resource;
9998 int err = 0;
9999
10000 mutex_lock(&devlink->lock);
10001 resource = devlink_resource_find(devlink, NULL, resource_id);
10002 if (!resource) {
10003 err = -EINVAL;
10004 goto out;
10005 }
10006 *p_resource_size = resource->size_new;
10007 resource->size = resource->size_new;
10008out:
10009 mutex_unlock(&devlink->lock);
10010 return err;
10011}
10012EXPORT_SYMBOL_GPL(devlink_resource_size_get);
10013
56dc7cd0
AS		 10014/**
10015 * devlink_dpipe_table_resource_set - set the resource id
10016 *
10017 * @devlink: devlink
10018 * @table_name: table name
10019 * @resource_id: resource id
10020 * @resource_units: number of resource's units consumed per table's entry
10021 */
10022int devlink_dpipe_table_resource_set(struct devlink *devlink,
10023 const char *table_name, u64 resource_id,
10024 u64 resource_units)
10025{
10026 struct devlink_dpipe_table *table;
10027 int err = 0;
10028
10029 mutex_lock(&devlink->lock);
10030 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2eb51c75 10031 table_name, devlink);
56dc7cd0
AS		 10032 if (!table) {
10033 err = -EINVAL;
10034 goto out;
10035 }
10036 table->resource_id = resource_id;
10037 table->resource_units = resource_units;
10038 table->resource_valid = true;
10039out:
10040 mutex_unlock(&devlink->lock);
10041 return err;
10042}
10043EXPORT_SYMBOL_GPL(devlink_dpipe_table_resource_set);
10044
fc56be47
JP		 10045/**
10046 * devlink_resource_occ_get_register - register occupancy getter
10047 *
10048 * @devlink: devlink
10049 * @resource_id: resource id
10050 * @occ_get: occupancy getter callback
10051 * @occ_get_priv: occupancy getter callback priv
10052 */
10053void devlink_resource_occ_get_register(struct devlink *devlink,
10054 u64 resource_id,
10055 devlink_resource_occ_get_t *occ_get,
10056 void *occ_get_priv)
10057{
10058 struct devlink_resource *resource;
10059
10060 mutex_lock(&devlink->lock);
10061 resource = devlink_resource_find(devlink, NULL, resource_id);
10062 if (WARN_ON(!resource))
10063 goto out;
10064 WARN_ON(resource->occ_get);
10065
10066 resource->occ_get = occ_get;
10067 resource->occ_get_priv = occ_get_priv;
10068out:
10069 mutex_unlock(&devlink->lock);
10070}
10071EXPORT_SYMBOL_GPL(devlink_resource_occ_get_register);
10072
10073/**
10074 * devlink_resource_occ_get_unregister - unregister occupancy getter
10075 *
10076 * @devlink: devlink
10077 * @resource_id: resource id
10078 */
10079void devlink_resource_occ_get_unregister(struct devlink *devlink,
10080 u64 resource_id)
10081{
10082 struct devlink_resource *resource;
10083
10084 mutex_lock(&devlink->lock);
10085 resource = devlink_resource_find(devlink, NULL, resource_id);
10086 if (WARN_ON(!resource))
10087 goto out;
10088 WARN_ON(!resource->occ_get);
10089
10090 resource->occ_get = NULL;
10091 resource->occ_get_priv = NULL;
10092out:
10093 mutex_unlock(&devlink->lock);
10094}
10095EXPORT_SYMBOL_GPL(devlink_resource_occ_get_unregister);
10096
39e6160e
VV		 10097static int devlink_param_verify(const struct devlink_param *param)
10098{
10099 if (!param || !param->name || !param->supported_cmodes)
10100 return -EINVAL;
10101 if (param->generic)
10102 return devlink_param_generic_verify(param);
10103 else
10104 return devlink_param_driver_verify(param);
10105}
10106
39e6160e
VV		 10107/**
10108 * devlink_params_register - register configuration parameters
10109 *
10110 * @devlink: devlink
10111 * @params: configuration parameters array
10112 * @params_count: number of parameters provided
10113 *
10114 * Register the configuration parameters supported by the driver.
10115 */
10116int devlink_params_register(struct devlink *devlink,
10117 const struct devlink_param *params,
10118 size_t params_count)
10119{
ee775b56
LR		 10120 const struct devlink_param *param = params;
10121 int i, err;
10122
7a690ad4
LR		 10123 ASSERT_DEVLINK_NOT_REGISTERED(devlink);
10124
ee775b56
LR		 10125 for (i = 0; i < params_count; i++, param++) {
10126 err = devlink_param_register(devlink, param);
10127 if (err)
10128 goto rollback;
10129 }
10130 return 0;
10131
10132rollback:
10133 if (!i)
10134 return err;
10135
10136 for (param--; i > 0; i--, param--)
10137 devlink_param_unregister(devlink, param);
10138 return err;
39e6160e 10139}
eabaef18
MS		 10140EXPORT_SYMBOL_GPL(devlink_params_register);
10141
10142/**
10143 * devlink_params_unregister - unregister configuration parameters
10144 * @devlink: devlink
10145 * @params: configuration parameters to unregister
10146 * @params_count: number of parameters provided
10147 */
10148void devlink_params_unregister(struct devlink *devlink,
10149 const struct devlink_param *params,
10150 size_t params_count)
10151{
ee775b56
LR		 10152 const struct devlink_param *param = params;
10153 int i;
10154
7a690ad4
LR		 10155 ASSERT_DEVLINK_NOT_REGISTERED(devlink);
10156
ee775b56
LR		 10157 for (i = 0; i < params_count; i++, param++)
10158 devlink_param_unregister(devlink, param);
eabaef18
MS		 10159}
10160EXPORT_SYMBOL_GPL(devlink_params_unregister);
10161
b40c51ef
PP		 10162/**
10163 * devlink_param_register - register one configuration parameter
10164 *
10165 * @devlink: devlink
10166 * @param: one configuration parameter
10167 *
10168 * Register the configuration parameter supported by the driver.
10169 * Return: returns 0 on successful registration or error code otherwise.
10170 */
10171int devlink_param_register(struct devlink *devlink,
10172 const struct devlink_param *param)
10173{
ee775b56 10174 struct devlink_param_item *param_item;
b40c51ef 10175
7a690ad4
LR		 10176 ASSERT_DEVLINK_NOT_REGISTERED(devlink);
10177
ee775b56
LR		 10178 WARN_ON(devlink_param_verify(param));
10179 WARN_ON(devlink_param_find_by_name(&devlink->param_list, param->name));
10180
10181 if (param->supported_cmodes == BIT(DEVLINK_PARAM_CMODE_DRIVERINIT))
10182 WARN_ON(param->get || param->set);
10183 else
10184 WARN_ON(!param->get || !param->set);
10185
10186 param_item = kzalloc(sizeof(*param_item), GFP_KERNEL);
10187 if (!param_item)
10188 return -ENOMEM;
10189
10190 param_item->param = param;
10191
10192 list_add_tail(&param_item->list, &devlink->param_list);
10193 return 0;
b40c51ef
PP		 10194}
10195EXPORT_SYMBOL_GPL(devlink_param_register);
10196
10197/**
10198 * devlink_param_unregister - unregister one configuration parameter
10199 * @devlink: devlink
10200 * @param: configuration parameter to unregister
10201 */
10202void devlink_param_unregister(struct devlink *devlink,
10203 const struct devlink_param *param)
10204{
ee775b56
LR		 10205 struct devlink_param_item *param_item;
10206
7a690ad4
LR		 10207 ASSERT_DEVLINK_NOT_REGISTERED(devlink);
10208
ee775b56
LR		 10209 param_item =
10210 devlink_param_find_by_name(&devlink->param_list, param->name);
10211 WARN_ON(!param_item);
10212 list_del(&param_item->list);
10213 kfree(param_item);
b40c51ef
PP		 10214}
10215EXPORT_SYMBOL_GPL(devlink_param_unregister);
10216
8ba024df
LR		 10217/**
10218 * devlink_param_driverinit_value_get - get configuration parameter
10219 * value for driver initializing
10220 *
10221 * @devlink: devlink
10222 * @param_id: parameter ID
10223 * @init_val: value of parameter in driverinit configuration mode
10224 *
10225 * This function should be used by the driver to get driverinit
10226 * configuration for initialization after reload command.
10227 */
10228int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
10229 union devlink_param_value *init_val)
ec01aeb1
MS		 10230{
10231 struct devlink_param_item *param_item;
10232
8ba024df
LR		 10233 if (!devlink_reload_supported(devlink->ops))
10234 return -EOPNOTSUPP;
10235
10236 param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
ec01aeb1
MS		 10237 if (!param_item)
10238 return -EINVAL;
10239
10240 if (!param_item->driverinit_value_valid ||
10241 !devlink_param_cmode_is_supported(param_item->param,
10242 DEVLINK_PARAM_CMODE_DRIVERINIT))
10243 return -EOPNOTSUPP;
10244
1276534c
MS		 10245 if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
10246 strcpy(init_val->vstr, param_item->driverinit_value.vstr);
10247 else
10248 *init_val = param_item->driverinit_value;
ec01aeb1
MS		 10249
10250 return 0;
10251}
8ba024df 10252EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_get);
ffd19b9a 10253
8ba024df
LR		 10254/**
10255 * devlink_param_driverinit_value_set - set value of configuration
10256 * parameter for driverinit
10257 * configuration mode
10258 *
10259 * @devlink: devlink
10260 * @param_id: parameter ID
10261 * @init_val: value of parameter to set for driverinit configuration mode
10262 *
10263 * This function should be used by the driver to set driverinit
10264 * configuration mode default value.
10265 */
10266int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
10267 union devlink_param_value init_val)
5473a7bd
VV		 10268{
10269 struct devlink_param_item *param_item;
10270
7a690ad4
LR		 10271 ASSERT_DEVLINK_NOT_REGISTERED(devlink);
10272
8ba024df 10273 param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
5473a7bd
VV		 10274 if (!param_item)
10275 return -EINVAL;
10276
10277 if (!devlink_param_cmode_is_supported(param_item->param,
10278 DEVLINK_PARAM_CMODE_DRIVERINIT))
10279 return -EOPNOTSUPP;
10280
10281 if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
10282 strcpy(param_item->driverinit_value.vstr, init_val.vstr);
10283 else
10284 param_item->driverinit_value = init_val;
10285 param_item->driverinit_value_valid = true;
5473a7bd
VV		 10286 return 0;
10287}
ec01aeb1
MS		 10288EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_set);
10289
ea601e17
MS		 10290/**
10291 * devlink_param_value_changed - notify devlink on a parameter's value
10292 * change. Should be called by the driver
10293 * right after the change.
10294 *
10295 * @devlink: devlink
10296 * @param_id: parameter ID
10297 *
10298 * This function should be used by the driver to notify devlink on value
10299 * change, excluding driverinit configuration mode.
10300 * For driverinit configuration mode driver should use the function
ea601e17
MS		 10301 */
10302void devlink_param_value_changed(struct devlink *devlink, u32 param_id)
10303{
10304 struct devlink_param_item *param_item;
10305
10306 param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
10307 WARN_ON(!param_item);
10308
c1e5786d 10309 devlink_param_notify(devlink, 0, param_item, DEVLINK_CMD_PARAM_NEW);
ea601e17
MS		 10310}
10311EXPORT_SYMBOL_GPL(devlink_param_value_changed);
10312
b16ebe92
AV		 10313/**
10314 * devlink_region_create - create a new address region
10315 *
10316 * @devlink: devlink
e8937681 10317 * @ops: region operations and name
b16ebe92
AV		 10318 * @region_max_snapshots: Maximum supported number of snapshots for region
10319 * @region_size: size of region
10320 */
e8937681
JK		 10321struct devlink_region *
10322devlink_region_create(struct devlink *devlink,
10323 const struct devlink_region_ops *ops,
10324 u32 region_max_snapshots, u64 region_size)
b16ebe92
AV		 10325{
10326 struct devlink_region *region;
10327 int err = 0;
10328
a0a09f6b
JK		 10329 if (WARN_ON(!ops) || WARN_ON(!ops->destructor))
10330 return ERR_PTR(-EINVAL);
10331
b16ebe92
AV		 10332 mutex_lock(&devlink->lock);
10333
e8937681 10334 if (devlink_region_get_by_name(devlink, ops->name)) {
b16ebe92
AV		 10335 err = -EEXIST;
10336 goto unlock;
10337 }
10338
10339 region = kzalloc(sizeof(*region), GFP_KERNEL);
10340 if (!region) {
10341 err = -ENOMEM;
10342 goto unlock;
10343 }
10344
10345 region->devlink = devlink;
10346 region->max_snapshots = region_max_snapshots;
e8937681 10347 region->ops = ops;
b16ebe92
AV		 10348 region->size = region_size;
10349 INIT_LIST_HEAD(&region->snapshot_list);
10350 list_add_tail(&region->list, &devlink->region_list);
866319bb 10351 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
b16ebe92
AV		 10352
10353 mutex_unlock(&devlink->lock);
10354 return region;
10355
10356unlock:
10357 mutex_unlock(&devlink->lock);
10358 return ERR_PTR(err);
10359}
10360EXPORT_SYMBOL_GPL(devlink_region_create);
10361
544e7c33
AL		 10362/**
10363 * devlink_port_region_create - create a new address region for a port
10364 *
10365 * @port: devlink port
10366 * @ops: region operations and name
10367 * @region_max_snapshots: Maximum supported number of snapshots for region
10368 * @region_size: size of region
10369 */
10370struct devlink_region *
10371devlink_port_region_create(struct devlink_port *port,
10372 const struct devlink_port_region_ops *ops,
10373 u32 region_max_snapshots, u64 region_size)
10374{
10375 struct devlink *devlink = port->devlink;
10376 struct devlink_region *region;
10377 int err = 0;
10378
10379 if (WARN_ON(!ops) || WARN_ON(!ops->destructor))
10380 return ERR_PTR(-EINVAL);
10381
10382 mutex_lock(&devlink->lock);
10383
10384 if (devlink_port_region_get_by_name(port, ops->name)) {
10385 err = -EEXIST;
10386 goto unlock;
10387 }
10388
10389 region = kzalloc(sizeof(*region), GFP_KERNEL);
10390 if (!region) {
10391 err = -ENOMEM;
10392 goto unlock;
10393 }
10394
10395 region->devlink = devlink;
10396 region->port = port;
10397 region->max_snapshots = region_max_snapshots;
10398 region->port_ops = ops;
10399 region->size = region_size;
10400 INIT_LIST_HEAD(&region->snapshot_list);
10401 list_add_tail(&region->list, &port->region_list);
10402 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
10403
10404 mutex_unlock(&devlink->lock);
10405 return region;
10406
10407unlock:
10408 mutex_unlock(&devlink->lock);
10409 return ERR_PTR(err);
10410}
10411EXPORT_SYMBOL_GPL(devlink_port_region_create);
10412
b16ebe92
AV		 10413/**
10414 * devlink_region_destroy - destroy address region
10415 *
10416 * @region: devlink region to destroy
10417 */
10418void devlink_region_destroy(struct devlink_region *region)
10419{
10420 struct devlink *devlink = region->devlink;
d7e52722 10421 struct devlink_snapshot *snapshot, *ts;
b16ebe92
AV		 10422
10423 mutex_lock(&devlink->lock);
d7e52722
AV		 10424
10425 /* Free all snapshots of region */
10426 list_for_each_entry_safe(snapshot, ts, &region->snapshot_list, list)
92b49822 10427 devlink_region_snapshot_del(region, snapshot);
d7e52722 10428
b16ebe92 10429 list_del(&region->list);
866319bb
AV		 10430
10431 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL);
b16ebe92
AV		 10432 mutex_unlock(&devlink->lock);
10433 kfree(region);
10434}
10435EXPORT_SYMBOL_GPL(devlink_region_destroy);
10436
ccadfa44 10437/**
b0efcae5 10438 * devlink_region_snapshot_id_get - get snapshot ID
ccadfa44
AV		 10439 *
10440 * This callback should be called when adding a new snapshot,
10441 * Driver should use the same id for multiple snapshots taken
10442 * on multiple regions at the same time/by the same trigger.
10443 *
12102436
JK		 10444 * The caller of this function must use devlink_region_snapshot_id_put
10445 * when finished creating regions using this id.
10446 *
7ef19d3b
JK		 10447 * Returns zero on success, or a negative error code on failure.
10448 *
ccadfa44 10449 * @devlink: devlink
7ef19d3b 10450 * @id: storage to return id
ccadfa44 10451 */
7ef19d3b 10452int devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id)
ccadfa44 10453{
7ef19d3b 10454 int err;
ccadfa44
AV		 10455
10456 mutex_lock(&devlink->lock);
7ef19d3b 10457 err = __devlink_region_snapshot_id_get(devlink, id);
ccadfa44
AV		 10458 mutex_unlock(&devlink->lock);
10459
7ef19d3b 10460 return err;
ccadfa44 10461}
b0efcae5 10462EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_get);
ccadfa44 10463
12102436
JK		 10464/**
10465 * devlink_region_snapshot_id_put - put snapshot ID reference
10466 *
10467 * This should be called by a driver after finishing creating snapshots
10468 * with an id. Doing so ensures that the ID can later be released in the
10469 * event that all snapshots using it have been destroyed.
10470 *
10471 * @devlink: devlink
10472 * @id: id to release reference on
10473 */
10474void devlink_region_snapshot_id_put(struct devlink *devlink, u32 id)
10475{
10476 mutex_lock(&devlink->lock);
10477 __devlink_snapshot_id_decrement(devlink, id);
10478 mutex_unlock(&devlink->lock);
10479}
10480EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_put);
10481
d7e52722
AV		 10482/**
10483 * devlink_region_snapshot_create - create a new snapshot
10484 * This will add a new snapshot of a region. The snapshot
10485 * will be stored on the region struct and can be accessed
6d82f67e 10486 * from devlink. This is useful for future analyses of snapshots.
d7e52722
AV		 10487 * Multiple snapshots can be created on a region.
10488 * The @snapshot_id should be obtained using the getter function.
10489 *
eeaadd82 10490 * @region: devlink region of the snapshot
d7e52722
AV		 10491 * @data: snapshot data
10492 * @snapshot_id: snapshot id to be created
d7e52722 10493 */
3a5e5234 10494int devlink_region_snapshot_create(struct devlink_region *region,
a0a09f6b 10495 u8 *data, u32 snapshot_id)
d7e52722
AV		 10496{
10497 struct devlink *devlink = region->devlink;
d7e52722
AV		 10498 int err;
10499
10500 mutex_lock(&devlink->lock);
cf80faee 10501 err = __devlink_region_snapshot_create(region, data, snapshot_id);
d7e52722 10502 mutex_unlock(&devlink->lock);
d7e52722 10503
d7e52722
AV		 10504 return err;
10505}
10506EXPORT_SYMBOL_GPL(devlink_region_snapshot_create);
10507
0f420b6c
IS		 10508#define DEVLINK_TRAP(_id, _type) \
10509 { \
10510 .type = DEVLINK_TRAP_TYPE_##_type, \
10511 .id = DEVLINK_TRAP_GENERIC_ID_##_id, \
10512 .name = DEVLINK_TRAP_GENERIC_NAME_##_id, \
10513 }
10514
10515static const struct devlink_trap devlink_trap_generic[] = {
391203ab
IS		 10516 DEVLINK_TRAP(SMAC_MC, DROP),
10517 DEVLINK_TRAP(VLAN_TAG_MISMATCH, DROP),
10518 DEVLINK_TRAP(INGRESS_VLAN_FILTER, DROP),
10519 DEVLINK_TRAP(INGRESS_STP_FILTER, DROP),
10520 DEVLINK_TRAP(EMPTY_TX_LIST, DROP),
10521 DEVLINK_TRAP(PORT_LOOPBACK_FILTER, DROP),
10522 DEVLINK_TRAP(BLACKHOLE_ROUTE, DROP),
10523 DEVLINK_TRAP(TTL_ERROR, EXCEPTION),
10524 DEVLINK_TRAP(TAIL_DROP, DROP),
6896cc4d
AC		 10525 DEVLINK_TRAP(NON_IP_PACKET, DROP),
10526 DEVLINK_TRAP(UC_DIP_MC_DMAC, DROP),
10527 DEVLINK_TRAP(DIP_LB, DROP),
10528 DEVLINK_TRAP(SIP_MC, DROP),
10529 DEVLINK_TRAP(SIP_LB, DROP),
10530 DEVLINK_TRAP(CORRUPTED_IP_HDR, DROP),
10531 DEVLINK_TRAP(IPV4_SIP_BC, DROP),
10532 DEVLINK_TRAP(IPV6_MC_DIP_RESERVED_SCOPE, DROP),
10533 DEVLINK_TRAP(IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE, DROP),
3b063ae5
AC		 10534 DEVLINK_TRAP(MTU_ERROR, EXCEPTION),
10535 DEVLINK_TRAP(UNRESOLVED_NEIGH, EXCEPTION),
10536 DEVLINK_TRAP(RPF, EXCEPTION),
10537 DEVLINK_TRAP(REJECT_ROUTE, EXCEPTION),
10538 DEVLINK_TRAP(IPV4_LPM_UNICAST_MISS, EXCEPTION),
10539 DEVLINK_TRAP(IPV6_LPM_UNICAST_MISS, EXCEPTION),
95f0ead8 10540 DEVLINK_TRAP(NON_ROUTABLE, DROP),
13c056ec 10541 DEVLINK_TRAP(DECAP_ERROR, EXCEPTION),
c3cae491 10542 DEVLINK_TRAP(OVERLAY_SMAC_MC, DROP),
ecd942a0
JP		 10543 DEVLINK_TRAP(INGRESS_FLOW_ACTION_DROP, DROP),
10544 DEVLINK_TRAP(EGRESS_FLOW_ACTION_DROP, DROP),
515eac67
IS		 10545 DEVLINK_TRAP(STP, CONTROL),
10546 DEVLINK_TRAP(LACP, CONTROL),
10547 DEVLINK_TRAP(LLDP, CONTROL),
10548 DEVLINK_TRAP(IGMP_QUERY, CONTROL),
10549 DEVLINK_TRAP(IGMP_V1_REPORT, CONTROL),
10550 DEVLINK_TRAP(IGMP_V2_REPORT, CONTROL),
10551 DEVLINK_TRAP(IGMP_V3_REPORT, CONTROL),
10552 DEVLINK_TRAP(IGMP_V2_LEAVE, CONTROL),
10553 DEVLINK_TRAP(MLD_QUERY, CONTROL),
10554 DEVLINK_TRAP(MLD_V1_REPORT, CONTROL),
10555 DEVLINK_TRAP(MLD_V2_REPORT, CONTROL),
10556 DEVLINK_TRAP(MLD_V1_DONE, CONTROL),
d77cfd16
IS		 10557 DEVLINK_TRAP(IPV4_DHCP, CONTROL),
10558 DEVLINK_TRAP(IPV6_DHCP, CONTROL),
10559 DEVLINK_TRAP(ARP_REQUEST, CONTROL),
10560 DEVLINK_TRAP(ARP_RESPONSE, CONTROL),
10561 DEVLINK_TRAP(ARP_OVERLAY, CONTROL),
10562 DEVLINK_TRAP(IPV6_NEIGH_SOLICIT, CONTROL),
10563 DEVLINK_TRAP(IPV6_NEIGH_ADVERT, CONTROL),
10564 DEVLINK_TRAP(IPV4_BFD, CONTROL),
10565 DEVLINK_TRAP(IPV6_BFD, CONTROL),
10566 DEVLINK_TRAP(IPV4_OSPF, CONTROL),
10567 DEVLINK_TRAP(IPV6_OSPF, CONTROL),
10568 DEVLINK_TRAP(IPV4_BGP, CONTROL),
10569 DEVLINK_TRAP(IPV6_BGP, CONTROL),
10570 DEVLINK_TRAP(IPV4_VRRP, CONTROL),
10571 DEVLINK_TRAP(IPV6_VRRP, CONTROL),
10572 DEVLINK_TRAP(IPV4_PIM, CONTROL),
10573 DEVLINK_TRAP(IPV6_PIM, CONTROL),
10574 DEVLINK_TRAP(UC_LB, CONTROL),
10575 DEVLINK_TRAP(LOCAL_ROUTE, CONTROL),
10576 DEVLINK_TRAP(EXTERNAL_ROUTE, CONTROL),
10577 DEVLINK_TRAP(IPV6_UC_DIP_LINK_LOCAL_SCOPE, CONTROL),
10578 DEVLINK_TRAP(IPV6_DIP_ALL_NODES, CONTROL),
10579 DEVLINK_TRAP(IPV6_DIP_ALL_ROUTERS, CONTROL),
10580 DEVLINK_TRAP(IPV6_ROUTER_SOLICIT, CONTROL),
10581 DEVLINK_TRAP(IPV6_ROUTER_ADVERT, CONTROL),
10582 DEVLINK_TRAP(IPV6_REDIRECT, CONTROL),
10583 DEVLINK_TRAP(IPV4_ROUTER_ALERT, CONTROL),
10584 DEVLINK_TRAP(IPV6_ROUTER_ALERT, CONTROL),
10585 DEVLINK_TRAP(PTP_EVENT, CONTROL),
10586 DEVLINK_TRAP(PTP_GENERAL, CONTROL),
5eb18a2b
IS		 10587 DEVLINK_TRAP(FLOW_ACTION_SAMPLE, CONTROL),
10588 DEVLINK_TRAP(FLOW_ACTION_TRAP, CONTROL),
08e335f6 10589 DEVLINK_TRAP(EARLY_DROP, DROP),
10c24eb2
IC		 10590 DEVLINK_TRAP(VXLAN_PARSING, DROP),
10591 DEVLINK_TRAP(LLC_SNAP_PARSING, DROP),
10592 DEVLINK_TRAP(VLAN_PARSING, DROP),
10593 DEVLINK_TRAP(PPPOE_PPP_PARSING, DROP),
10594 DEVLINK_TRAP(MPLS_PARSING, DROP),
10595 DEVLINK_TRAP(ARP_PARSING, DROP),
10596 DEVLINK_TRAP(IP_1_PARSING, DROP),
10597 DEVLINK_TRAP(IP_N_PARSING, DROP),
10598 DEVLINK_TRAP(GRE_PARSING, DROP),
10599 DEVLINK_TRAP(UDP_PARSING, DROP),
10600 DEVLINK_TRAP(TCP_PARSING, DROP),
10601 DEVLINK_TRAP(IPSEC_PARSING, DROP),
10602 DEVLINK_TRAP(SCTP_PARSING, DROP),
10603 DEVLINK_TRAP(DCCP_PARSING, DROP),
10604 DEVLINK_TRAP(GTP_PARSING, DROP),
10605 DEVLINK_TRAP(ESP_PARSING, DROP),
f0a5013e 10606 DEVLINK_TRAP(BLACKHOLE_NEXTHOP, DROP),
e78ab164 10607 DEVLINK_TRAP(DMAC_FILTER, DROP),
0f420b6c
IS		 10608};
10609
10610#define DEVLINK_TRAP_GROUP(_id) \
10611 { \
10612 .id = DEVLINK_TRAP_GROUP_GENERIC_ID_##_id, \
10613 .name = DEVLINK_TRAP_GROUP_GENERIC_NAME_##_id, \
10614 }
10615
10616static const struct devlink_trap_group devlink_trap_group_generic[] = {
391203ab
IS		 10617 DEVLINK_TRAP_GROUP(L2_DROPS),
10618 DEVLINK_TRAP_GROUP(L3_DROPS),
678eb199 10619 DEVLINK_TRAP_GROUP(L3_EXCEPTIONS),
391203ab 10620 DEVLINK_TRAP_GROUP(BUFFER_DROPS),
13c056ec 10621 DEVLINK_TRAP_GROUP(TUNNEL_DROPS),
ecd942a0 10622 DEVLINK_TRAP_GROUP(ACL_DROPS),
515eac67
IS		 10623 DEVLINK_TRAP_GROUP(STP),
10624 DEVLINK_TRAP_GROUP(LACP),
10625 DEVLINK_TRAP_GROUP(LLDP),
10626 DEVLINK_TRAP_GROUP(MC_SNOOPING),
d77cfd16
IS		 10627 DEVLINK_TRAP_GROUP(DHCP),
10628 DEVLINK_TRAP_GROUP(NEIGH_DISCOVERY),
10629 DEVLINK_TRAP_GROUP(BFD),
10630 DEVLINK_TRAP_GROUP(OSPF),
10631 DEVLINK_TRAP_GROUP(BGP),
10632 DEVLINK_TRAP_GROUP(VRRP),
10633 DEVLINK_TRAP_GROUP(PIM),
10634 DEVLINK_TRAP_GROUP(UC_LB),
10635 DEVLINK_TRAP_GROUP(LOCAL_DELIVERY),
ec4f5b36 10636 DEVLINK_TRAP_GROUP(EXTERNAL_DELIVERY),
d77cfd16
IS		 10637 DEVLINK_TRAP_GROUP(IPV6),
10638 DEVLINK_TRAP_GROUP(PTP_EVENT),
10639 DEVLINK_TRAP_GROUP(PTP_GENERAL),
5eb18a2b
IS		 10640 DEVLINK_TRAP_GROUP(ACL_SAMPLE),
10641 DEVLINK_TRAP_GROUP(ACL_TRAP),
10c24eb2 10642 DEVLINK_TRAP_GROUP(PARSER_ERROR_DROPS),
0f420b6c
IS		 10643};
10644
10645static int devlink_trap_generic_verify(const struct devlink_trap *trap)
10646{
10647 if (trap->id > DEVLINK_TRAP_GENERIC_ID_MAX)
10648 return -EINVAL;
10649
10650 if (strcmp(trap->name, devlink_trap_generic[trap->id].name))
10651 return -EINVAL;
10652
10653 if (trap->type != devlink_trap_generic[trap->id].type)
10654 return -EINVAL;
10655
10656 return 0;
10657}
10658
10659static int devlink_trap_driver_verify(const struct devlink_trap *trap)
10660{
10661 int i;
10662
10663 if (trap->id <= DEVLINK_TRAP_GENERIC_ID_MAX)
10664 return -EINVAL;
10665
10666 for (i = 0; i < ARRAY_SIZE(devlink_trap_generic); i++) {
10667 if (!strcmp(trap->name, devlink_trap_generic[i].name))
10668 return -EEXIST;
10669 }
10670
10671 return 0;
10672}
10673
10674static int devlink_trap_verify(const struct devlink_trap *trap)
10675{
107f1678 10676 if (!trap || !trap->name)
0f420b6c
IS		 10677 return -EINVAL;
10678
10679 if (trap->generic)
10680 return devlink_trap_generic_verify(trap);
10681 else
10682 return devlink_trap_driver_verify(trap);
10683}
10684
10685static int
10686devlink_trap_group_generic_verify(const struct devlink_trap_group *group)
10687{
10688 if (group->id > DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
10689 return -EINVAL;
10690
10691 if (strcmp(group->name, devlink_trap_group_generic[group->id].name))
10692 return -EINVAL;
10693
10694 return 0;
10695}
10696
10697static int
10698devlink_trap_group_driver_verify(const struct devlink_trap_group *group)
10699{
10700 int i;
10701
10702 if (group->id <= DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
10703 return -EINVAL;
10704
10705 for (i = 0; i < ARRAY_SIZE(devlink_trap_group_generic); i++) {
10706 if (!strcmp(group->name, devlink_trap_group_generic[i].name))
10707 return -EEXIST;
10708 }
10709
10710 return 0;
10711}
10712
10713static int devlink_trap_group_verify(const struct devlink_trap_group *group)
10714{
10715 if (group->generic)
10716 return devlink_trap_group_generic_verify(group);
10717 else
10718 return devlink_trap_group_driver_verify(group);
10719}
10720
10721static void
10722devlink_trap_group_notify(struct devlink *devlink,
10723 const struct devlink_trap_group_item *group_item,
10724 enum devlink_command cmd)
10725{
10726 struct sk_buff *msg;
10727 int err;
10728
10729 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_GROUP_NEW &&
10730 cmd != DEVLINK_CMD_TRAP_GROUP_DEL);
fb9d19c2
LR		 10731 if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
10732 return;
0f420b6c
IS		 10733
10734 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10735 if (!msg)
10736 return;
10737
10738 err = devlink_nl_trap_group_fill(msg, devlink, group_item, cmd, 0, 0,
10739 0);
10740 if (err) {
10741 nlmsg_free(msg);
10742 return;
10743 }
10744
10745 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
10746 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
10747}
10748
0f420b6c
IS		 10749static int
10750devlink_trap_item_group_link(struct devlink *devlink,
10751 struct devlink_trap_item *trap_item)
10752{
107f1678 10753 u16 group_id = trap_item->trap->init_group_id;
0f420b6c
IS		 10754 struct devlink_trap_group_item *group_item;
10755
107f1678 10756 group_item = devlink_trap_group_item_lookup_by_id(devlink, group_id);
a09b37fc
IS		 10757 if (WARN_ON_ONCE(!group_item))
10758 return -EINVAL;
0f420b6c
IS		 10759
10760 trap_item->group_item = group_item;
10761
10762 return 0;
10763}
10764
0f420b6c
IS		 10765static void devlink_trap_notify(struct devlink *devlink,
10766 const struct devlink_trap_item *trap_item,
10767 enum devlink_command cmd)
10768{
10769 struct sk_buff *msg;
10770 int err;
10771
10772 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_NEW &&
10773 cmd != DEVLINK_CMD_TRAP_DEL);
cf530217
LR		 10774 if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
10775 return;
0f420b6c
IS		 10776
10777 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10778 if (!msg)
10779 return;
10780
10781 err = devlink_nl_trap_fill(msg, devlink, trap_item, cmd, 0, 0, 0);
10782 if (err) {
10783 nlmsg_free(msg);
10784 return;
10785 }
10786
10787 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
10788 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
10789}
10790
10791static int
10792devlink_trap_register(struct devlink *devlink,
10793 const struct devlink_trap *trap, void *priv)
10794{
10795 struct devlink_trap_item *trap_item;
10796 int err;
10797
10798 if (devlink_trap_item_lookup(devlink, trap->name))
10799 return -EEXIST;
10800
10801 trap_item = kzalloc(sizeof(*trap_item), GFP_KERNEL);
10802 if (!trap_item)
10803 return -ENOMEM;
10804
10805 trap_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
10806 if (!trap_item->stats) {
10807 err = -ENOMEM;
10808 goto err_stats_alloc;
10809 }
10810
10811 trap_item->trap = trap;
10812 trap_item->action = trap->init_action;
10813 trap_item->priv = priv;
10814
10815 err = devlink_trap_item_group_link(devlink, trap_item);
10816 if (err)
10817 goto err_group_link;
10818
10819 err = devlink->ops->trap_init(devlink, trap, trap_item);
10820 if (err)
10821 goto err_trap_init;
10822
10823 list_add_tail(&trap_item->list, &devlink->trap_list);
10824 devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_NEW);
10825
10826 return 0;
10827
10828err_trap_init:
0f420b6c
IS		 10829err_group_link:
10830 free_percpu(trap_item->stats);
10831err_stats_alloc:
10832 kfree(trap_item);
10833 return err;
10834}
10835
10836static void devlink_trap_unregister(struct devlink *devlink,
10837 const struct devlink_trap *trap)
10838{
10839 struct devlink_trap_item *trap_item;
10840
10841 trap_item = devlink_trap_item_lookup(devlink, trap->name);
10842 if (WARN_ON_ONCE(!trap_item))
10843 return;
10844
10845 devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_DEL);
10846 list_del(&trap_item->list);
10847 if (devlink->ops->trap_fini)
10848 devlink->ops->trap_fini(devlink, trap, trap_item);
0f420b6c
IS		 10849 free_percpu(trap_item->stats);
10850 kfree(trap_item);
10851}
10852
10853static void devlink_trap_disable(struct devlink *devlink,
10854 const struct devlink_trap *trap)
10855{
10856 struct devlink_trap_item *trap_item;
10857
10858 trap_item = devlink_trap_item_lookup(devlink, trap->name);
10859 if (WARN_ON_ONCE(!trap_item))
10860 return;
10861
c88e11e0
IS		 10862 devlink->ops->trap_action_set(devlink, trap, DEVLINK_TRAP_ACTION_DROP,
10863 NULL);
0f420b6c
IS		 10864 trap_item->action = DEVLINK_TRAP_ACTION_DROP;
10865}
10866
10867/**
10868 * devlink_traps_register - Register packet traps with devlink.
10869 * @devlink: devlink.
10870 * @traps: Packet traps.
10871 * @traps_count: Count of provided packet traps.
10872 * @priv: Driver private information.
10873 *
10874 * Return: Non-zero value on failure.
10875 */
10876int devlink_traps_register(struct devlink *devlink,
10877 const struct devlink_trap *traps,
10878 size_t traps_count, void *priv)
10879{
10880 int i, err;
10881
10882 if (!devlink->ops->trap_init || !devlink->ops->trap_action_set)
10883 return -EINVAL;
10884
10885 mutex_lock(&devlink->lock);
10886 for (i = 0; i < traps_count; i++) {
10887 const struct devlink_trap *trap = &traps[i];
10888
10889 err = devlink_trap_verify(trap);
10890 if (err)
10891 goto err_trap_verify;
10892
10893 err = devlink_trap_register(devlink, trap, priv);
10894 if (err)
10895 goto err_trap_register;
10896 }
10897 mutex_unlock(&devlink->lock);
10898
10899 return 0;
10900
10901err_trap_register:
10902err_trap_verify:
10903 for (i--; i >= 0; i--)
10904 devlink_trap_unregister(devlink, &traps[i]);
10905 mutex_unlock(&devlink->lock);
10906 return err;
10907}
10908EXPORT_SYMBOL_GPL(devlink_traps_register);
10909
10910/**
10911 * devlink_traps_unregister - Unregister packet traps from devlink.
10912 * @devlink: devlink.
10913 * @traps: Packet traps.
10914 * @traps_count: Count of provided packet traps.
10915 */
10916void devlink_traps_unregister(struct devlink *devlink,
10917 const struct devlink_trap *traps,
10918 size_t traps_count)
10919{
10920 int i;
10921
10922 mutex_lock(&devlink->lock);
10923 /* Make sure we do not have any packets in-flight while unregistering
10924 * traps by disabling all of them and waiting for a grace period.
10925 */
10926 for (i = traps_count - 1; i >= 0; i--)
10927 devlink_trap_disable(devlink, &traps[i]);
10928 synchronize_rcu();
10929 for (i = traps_count - 1; i >= 0; i--)
10930 devlink_trap_unregister(devlink, &traps[i]);
10931 mutex_unlock(&devlink->lock);
10932}
10933EXPORT_SYMBOL_GPL(devlink_traps_unregister);
10934
10935static void
10936devlink_trap_stats_update(struct devlink_stats __percpu *trap_stats,
10937 size_t skb_len)
10938{
10939 struct devlink_stats *stats;
10940
10941 stats = this_cpu_ptr(trap_stats);
10942 u64_stats_update_begin(&stats->syncp);
10943 stats->rx_bytes += skb_len;
10944 stats->rx_packets++;
10945 u64_stats_update_end(&stats->syncp);
10946}
10947
5b88823b
IS		 10948static void
10949devlink_trap_report_metadata_set(struct devlink_trap_metadata *metadata,
10950 const struct devlink_trap_item *trap_item,
10951 struct devlink_port *in_devlink_port,
10952 const struct flow_action_cookie *fa_cookie)
10953{
10954 metadata->trap_name = trap_item->trap->name;
10955 metadata->trap_group_name = trap_item->group_item->group->name;
10956 metadata->fa_cookie = fa_cookie;
93e15596 10957 metadata->trap_type = trap_item->trap->type;
5b88823b
IS		 10958
10959 spin_lock(&in_devlink_port->type_lock);
10960 if (in_devlink_port->type == DEVLINK_PORT_TYPE_ETH)
10961 metadata->input_dev = in_devlink_port->type_dev;
10962 spin_unlock(&in_devlink_port->type_lock);
10963}
10964
0f420b6c
IS		 10965/**
10966 * devlink_trap_report - Report trapped packet to drop monitor.
10967 * @devlink: devlink.
10968 * @skb: Trapped packet.
10969 * @trap_ctx: Trap context.
10970 * @in_devlink_port: Input devlink port.
5a2e106c 10971 * @fa_cookie: Flow action cookie. Could be NULL.
0f420b6c
IS		 10972 */
10973void devlink_trap_report(struct devlink *devlink, struct sk_buff *skb,
5a2e106c
JP		 10974 void *trap_ctx, struct devlink_port *in_devlink_port,
10975 const struct flow_action_cookie *fa_cookie)
10976
0f420b6c
IS		 10977{
10978 struct devlink_trap_item *trap_item = trap_ctx;
0f420b6c
IS		 10979
10980 devlink_trap_stats_update(trap_item->stats, skb->len);
10981 devlink_trap_stats_update(trap_item->group_item->stats, skb->len);
10982
5b88823b
IS		 10983 if (trace_devlink_trap_report_enabled()) {
10984 struct devlink_trap_metadata metadata = {};
10985
10986 devlink_trap_report_metadata_set(&metadata, trap_item,
10987 in_devlink_port, fa_cookie);
10988 trace_devlink_trap_report(devlink, skb, &metadata);
10989 }
0f420b6c
IS		 10990}
10991EXPORT_SYMBOL_GPL(devlink_trap_report);
10992
10993/**
10994 * devlink_trap_ctx_priv - Trap context to driver private information.
10995 * @trap_ctx: Trap context.
10996 *
10997 * Return: Driver private information passed during registration.
10998 */
10999void *devlink_trap_ctx_priv(void *trap_ctx)
11000{
11001 struct devlink_trap_item *trap_item = trap_ctx;
11002
11003 return trap_item->priv;
11004}
11005EXPORT_SYMBOL_GPL(devlink_trap_ctx_priv);
11006
f9f54392
IS		 11007static int
11008devlink_trap_group_item_policer_link(struct devlink *devlink,
11009 struct devlink_trap_group_item *group_item)
11010{
11011 u32 policer_id = group_item->group->init_policer_id;
11012 struct devlink_trap_policer_item *policer_item;
11013
11014 if (policer_id == 0)
11015 return 0;
11016
11017 policer_item = devlink_trap_policer_item_lookup(devlink, policer_id);
11018 if (WARN_ON_ONCE(!policer_item))
11019 return -EINVAL;
11020
11021 group_item->policer_item = policer_item;
11022
11023 return 0;
11024}
11025
95ad9555
IS		 11026static int
11027devlink_trap_group_register(struct devlink *devlink,
11028 const struct devlink_trap_group *group)
11029{
11030 struct devlink_trap_group_item *group_item;
11031 int err;
11032
11033 if (devlink_trap_group_item_lookup(devlink, group->name))
11034 return -EEXIST;
11035
11036 group_item = kzalloc(sizeof(*group_item), GFP_KERNEL);
11037 if (!group_item)
11038 return -ENOMEM;
11039
11040 group_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
11041 if (!group_item->stats) {
11042 err = -ENOMEM;
11043 goto err_stats_alloc;
11044 }
11045
11046 group_item->group = group;
95ad9555 11047
f9f54392
IS		 11048 err = devlink_trap_group_item_policer_link(devlink, group_item);
11049 if (err)
11050 goto err_policer_link;
11051
95ad9555
IS		 11052 if (devlink->ops->trap_group_init) {
11053 err = devlink->ops->trap_group_init(devlink, group);
11054 if (err)
11055 goto err_group_init;
11056 }
11057
11058 list_add_tail(&group_item->list, &devlink->trap_group_list);
fb9d19c2
LR		 11059 devlink_trap_group_notify(devlink, group_item,
11060 DEVLINK_CMD_TRAP_GROUP_NEW);
11061
95ad9555
IS		 11062 return 0;
11063
11064err_group_init:
f9f54392 11065err_policer_link:
95ad9555
IS		 11066 free_percpu(group_item->stats);
11067err_stats_alloc:
11068 kfree(group_item);
11069 return err;
11070}
11071
11072static void
11073devlink_trap_group_unregister(struct devlink *devlink,
11074 const struct devlink_trap_group *group)
11075{
11076 struct devlink_trap_group_item *group_item;
11077
11078 group_item = devlink_trap_group_item_lookup(devlink, group->name);
11079 if (WARN_ON_ONCE(!group_item))
11080 return;
11081
fb9d19c2
LR		 11082 devlink_trap_group_notify(devlink, group_item,
11083 DEVLINK_CMD_TRAP_GROUP_DEL);
95ad9555
IS		 11084 list_del(&group_item->list);
11085 free_percpu(group_item->stats);
11086 kfree(group_item);
11087}
11088
11089/**
11090 * devlink_trap_groups_register - Register packet trap groups with devlink.
11091 * @devlink: devlink.
11092 * @groups: Packet trap groups.
11093 * @groups_count: Count of provided packet trap groups.
11094 *
11095 * Return: Non-zero value on failure.
11096 */
11097int devlink_trap_groups_register(struct devlink *devlink,
11098 const struct devlink_trap_group *groups,
11099 size_t groups_count)
11100{
11101 int i, err;
11102
11103 mutex_lock(&devlink->lock);
11104 for (i = 0; i < groups_count; i++) {
11105 const struct devlink_trap_group *group = &groups[i];
11106
11107 err = devlink_trap_group_verify(group);
11108 if (err)
11109 goto err_trap_group_verify;
11110
11111 err = devlink_trap_group_register(devlink, group);
11112 if (err)
11113 goto err_trap_group_register;
11114 }
11115 mutex_unlock(&devlink->lock);
11116
11117 return 0;
11118
11119err_trap_group_register:
11120err_trap_group_verify:
11121 for (i--; i >= 0; i--)
11122 devlink_trap_group_unregister(devlink, &groups[i]);
11123 mutex_unlock(&devlink->lock);
11124 return err;
11125}
11126EXPORT_SYMBOL_GPL(devlink_trap_groups_register);
11127
11128/**
11129 * devlink_trap_groups_unregister - Unregister packet trap groups from devlink.
11130 * @devlink: devlink.
11131 * @groups: Packet trap groups.
11132 * @groups_count: Count of provided packet trap groups.
11133 */
11134void devlink_trap_groups_unregister(struct devlink *devlink,
11135 const struct devlink_trap_group *groups,
11136 size_t groups_count)
11137{
11138 int i;
11139
11140 mutex_lock(&devlink->lock);
11141 for (i = groups_count - 1; i >= 0; i--)
11142 devlink_trap_group_unregister(devlink, &groups[i]);
11143 mutex_unlock(&devlink->lock);
11144}
11145EXPORT_SYMBOL_GPL(devlink_trap_groups_unregister);
11146
1e8c6619
IS		 11147static void
11148devlink_trap_policer_notify(struct devlink *devlink,
11149 const struct devlink_trap_policer_item *policer_item,
11150 enum devlink_command cmd)
11151{
11152 struct sk_buff *msg;
11153 int err;
11154
11155 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_POLICER_NEW &&
11156 cmd != DEVLINK_CMD_TRAP_POLICER_DEL);
c5e0321e
LR		 11157 if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
11158 return;
1e8c6619
IS		 11159
11160 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11161 if (!msg)
11162 return;
11163
11164 err = devlink_nl_trap_policer_fill(msg, devlink, policer_item, cmd, 0,
11165 0, 0);
11166 if (err) {
11167 nlmsg_free(msg);
11168 return;
11169 }
11170
11171 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
11172 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
11173}
11174
11175static int
11176devlink_trap_policer_register(struct devlink *devlink,
11177 const struct devlink_trap_policer *policer)
11178{
11179 struct devlink_trap_policer_item *policer_item;
11180 int err;
11181
11182 if (devlink_trap_policer_item_lookup(devlink, policer->id))
11183 return -EEXIST;
11184
11185 policer_item = kzalloc(sizeof(*policer_item), GFP_KERNEL);
11186 if (!policer_item)
11187 return -ENOMEM;
11188
11189 policer_item->policer = policer;
11190 policer_item->rate = policer->init_rate;
11191 policer_item->burst = policer->init_burst;
11192
11193 if (devlink->ops->trap_policer_init) {
11194 err = devlink->ops->trap_policer_init(devlink, policer);
11195 if (err)
11196 goto err_policer_init;
11197 }
11198
11199 list_add_tail(&policer_item->list, &devlink->trap_policer_list);
c5e0321e
LR		 11200 devlink_trap_policer_notify(devlink, policer_item,
11201 DEVLINK_CMD_TRAP_POLICER_NEW);
11202
1e8c6619
IS		 11203 return 0;
11204
11205err_policer_init:
11206 kfree(policer_item);
11207 return err;
11208}
11209
11210static void
11211devlink_trap_policer_unregister(struct devlink *devlink,
11212 const struct devlink_trap_policer *policer)
11213{
11214 struct devlink_trap_policer_item *policer_item;
11215
11216 policer_item = devlink_trap_policer_item_lookup(devlink, policer->id);
11217 if (WARN_ON_ONCE(!policer_item))
11218 return;
11219
c5e0321e
LR		 11220 devlink_trap_policer_notify(devlink, policer_item,
11221 DEVLINK_CMD_TRAP_POLICER_DEL);
1e8c6619
IS		 11222 list_del(&policer_item->list);
11223 if (devlink->ops->trap_policer_fini)
11224 devlink->ops->trap_policer_fini(devlink, policer);
11225 kfree(policer_item);
11226}
11227
11228/**
11229 * devlink_trap_policers_register - Register packet trap policers with devlink.
11230 * @devlink: devlink.
11231 * @policers: Packet trap policers.
11232 * @policers_count: Count of provided packet trap policers.
11233 *
11234 * Return: Non-zero value on failure.
11235 */
11236int
11237devlink_trap_policers_register(struct devlink *devlink,
11238 const struct devlink_trap_policer *policers,
11239 size_t policers_count)
11240{
11241 int i, err;
11242
11243 mutex_lock(&devlink->lock);
11244 for (i = 0; i < policers_count; i++) {
11245 const struct devlink_trap_policer *policer = &policers[i];
11246
11247 if (WARN_ON(policer->id == 0 ||
11248 policer->max_rate < policer->min_rate ||
11249 policer->max_burst < policer->min_burst)) {
11250 err = -EINVAL;
11251 goto err_trap_policer_verify;
11252 }
11253
11254 err = devlink_trap_policer_register(devlink, policer);
11255 if (err)
11256 goto err_trap_policer_register;
11257 }
11258 mutex_unlock(&devlink->lock);
11259
11260 return 0;
11261
11262err_trap_policer_register:
11263err_trap_policer_verify:
11264 for (i--; i >= 0; i--)
11265 devlink_trap_policer_unregister(devlink, &policers[i]);
11266 mutex_unlock(&devlink->lock);
11267 return err;
11268}
11269EXPORT_SYMBOL_GPL(devlink_trap_policers_register);
11270
11271/**
11272 * devlink_trap_policers_unregister - Unregister packet trap policers from devlink.
11273 * @devlink: devlink.
11274 * @policers: Packet trap policers.
11275 * @policers_count: Count of provided packet trap policers.
11276 */
11277void
11278devlink_trap_policers_unregister(struct devlink *devlink,
11279 const struct devlink_trap_policer *policers,
11280 size_t policers_count)
11281{
11282 int i;
11283
11284 mutex_lock(&devlink->lock);
11285 for (i = policers_count - 1; i >= 0; i--)
11286 devlink_trap_policer_unregister(devlink, &policers[i]);
11287 mutex_unlock(&devlink->lock);
11288}
11289EXPORT_SYMBOL_GPL(devlink_trap_policers_unregister);
11290
ddb6e99e
JK		 11291static void __devlink_compat_running_version(struct devlink *devlink,
11292 char *buf, size_t len)
11293{
11294 const struct nlattr *nlattr;
11295 struct devlink_info_req req;
11296 struct sk_buff *msg;
11297 int rem, err;
11298
ddb6e99e
JK		 11299 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11300 if (!msg)
11301 return;
11302
11303 req.msg = msg;
11304 err = devlink->ops->info_get(devlink, &req, NULL);
11305 if (err)
11306 goto free_msg;
11307
11308 nla_for_each_attr(nlattr, (void *)msg->data, msg->len, rem) {
11309 const struct nlattr *kv;
11310 int rem_kv;
11311
11312 if (nla_type(nlattr) != DEVLINK_ATTR_INFO_VERSION_RUNNING)
11313 continue;
11314
11315 nla_for_each_nested(kv, nlattr, rem_kv) {
11316 if (nla_type(kv) != DEVLINK_ATTR_INFO_VERSION_VALUE)
11317 continue;
11318
11319 strlcat(buf, nla_data(kv), len);
11320 strlcat(buf, " ", len);
11321 }
11322 }
11323free_msg:
11324 nlmsg_free(msg);
11325}
11326
2bc50987
LR		 11327static struct devlink_port *netdev_to_devlink_port(struct net_device *dev)
11328{
11329 if (!dev->netdev_ops->ndo_get_devlink_port)
11330 return NULL;
11331
11332 return dev->netdev_ops->ndo_get_devlink_port(dev);
11333}
11334
1af0a094 11335void devlink_compat_running_version(struct devlink *devlink,
ddb6e99e
JK		 11336 char *buf, size_t len)
11337{
1af0a094
JK		 11338 if (!devlink->ops->info_get)
11339 return;
b473b0d2
JK		 11340
11341 mutex_lock(&devlink->lock);
11342 __devlink_compat_running_version(devlink, buf, len);
11343 mutex_unlock(&devlink->lock);
ddb6e99e
JK		 11344}
11345
1af0a094 11346int devlink_compat_flash_update(struct devlink *devlink, const char *file_name)
4eceba17 11347{
bc75c054 11348 struct devlink_flash_update_params params = {};
e0dcd386 11349 int ret;
4eceba17 11350
1af0a094
JK		 11351 if (!devlink->ops->flash_update)
11352 return -EOPNOTSUPP;
4eceba17 11353
b44cfd4f
JK		 11354 ret = request_firmware(&params.fw, file_name, devlink->dev);
11355 if (ret)
1af0a094 11356 return ret;
bc75c054 11357
b473b0d2 11358 mutex_lock(&devlink->lock);
52cc5f3a 11359 devlink_flash_update_begin_notify(devlink);
bc75c054 11360 ret = devlink->ops->flash_update(devlink, &params, NULL);
52cc5f3a 11361 devlink_flash_update_end_notify(devlink);
b473b0d2 11362 mutex_unlock(&devlink->lock);
1b45ff6c 11363
b44cfd4f
JK		 11364 release_firmware(params.fw);
11365
b473b0d2 11366 return ret;
4eceba17
JK		 11367}
11368
af3836df
JP		 11369int devlink_compat_phys_port_name_get(struct net_device *dev,
11370 char *name, size_t len)
11371{
11372 struct devlink_port *devlink_port;
11373
11374 /* RTNL mutex is held here which ensures that devlink_port
11375 * instance cannot disappear in the middle. No need to take
11376 * any devlink lock as only permanent values are accessed.
11377 */
11378 ASSERT_RTNL();
11379
11380 devlink_port = netdev_to_devlink_port(dev);
11381 if (!devlink_port)
11382 return -EOPNOTSUPP;
11383
11384 return __devlink_port_phys_port_name_get(devlink_port, name, len);
11385}
11386
7e1146e8
JP		 11387int devlink_compat_switch_id_get(struct net_device *dev,
11388 struct netdev_phys_item_id *ppid)
11389{
11390 struct devlink_port *devlink_port;
11391
043b8413
VB		 11392 /* Caller must hold RTNL mutex or reference to dev, which ensures that
11393 * devlink_port instance cannot disappear in the middle. No need to take
7e1146e8
JP		 11394 * any devlink lock as only permanent values are accessed.
11395 */
7e1146e8 11396 devlink_port = netdev_to_devlink_port(dev);
46737a19 11397 if (!devlink_port || !devlink_port->switch_port)
7e1146e8
JP		 11398 return -EOPNOTSUPP;
11399
11400 memcpy(ppid, &devlink_port->attrs.switch_id, sizeof(*ppid));
11401
11402 return 0;
11403}
11404
070c63f2
JP		 11405static void __net_exit devlink_pernet_pre_exit(struct net *net)
11406{
11407 struct devlink *devlink;
ccdf0721 11408 u32 actions_performed;
11a861d7 11409 unsigned long index;
070c63f2
JP		 11410 int err;
11411
11412 /* In case network namespace is getting destroyed, reload
11413 * all devlink instances from this namespace into init_net.
11414 */
11415 mutex_lock(&devlink_mutex);
11a861d7 11416 xa_for_each_marked(&devlinks, index, devlink, DEVLINK_REGISTERED) {
437ebfd9 11417 if (!devlink_try_get(devlink))
cbf6ab67
LR		 11418 continue;
11419
437ebfd9
LR		 11420 if (!net_eq(devlink_net(devlink), net))
11421 goto retry;
11422
82465bec 11423 WARN_ON(!(devlink->features & DEVLINK_F_RELOAD));
cbf6ab67
LR		 11424 err = devlink_reload(devlink, &init_net,
11425 DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
11426 DEVLINK_RELOAD_LIMIT_UNSPEC,
11427 &actions_performed, NULL);
11428 if (err && err != -EOPNOTSUPP)
11429 pr_warn("Failed to reload devlink instance into init_net\n");
437ebfd9
LR		 11430retry:
11431 devlink_put(devlink);
070c63f2
JP		 11432 }
11433 mutex_unlock(&devlink_mutex);
11434}
11435
11436static struct pernet_operations devlink_pernet_ops __net_initdata = {
11437 .pre_exit = devlink_pernet_pre_exit,
11438};
11439
f4b6bcc7 11440static int __init devlink_init(void)
bfcd3a46 11441{
070c63f2
JP		 11442 int err;
11443
11444 err = genl_register_family(&devlink_nl_family);
11445 if (err)
11446 goto out;
11447 err = register_pernet_subsys(&devlink_pernet_ops);
11448
11449out:
11450 WARN_ON(err);
11451 return err;
bfcd3a46
JP		 11452}
11453
f4b6bcc7 11454subsys_initcall(devlink_init);
Linux 6.x block layer and io_uring tree(s)