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Merge branch 'r8169-improvements-for-scheduled-task-handling'
[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
10#include <linux/kernel.h>
11#include <linux/module.h>
12#include <linux/types.h>
13#include <linux/slab.h>
14#include <linux/gfp.h>
15#include <linux/device.h>
16#include <linux/list.h>
17#include <linux/netdevice.h>
b8f97554 18#include <linux/spinlock.h>
b587bdaf 19#include <linux/refcount.h>
136bf27f 20#include <linux/workqueue.h>
0f420b6c
IS		 21#include <linux/u64_stats_sync.h>
22#include <linux/timekeeping.h>
bfcd3a46
JP		 23#include <rdma/ib_verbs.h>
24#include <net/netlink.h>
25#include <net/genetlink.h>
26#include <net/rtnetlink.h>
27#include <net/net_namespace.h>
28#include <net/sock.h>
29#include <net/devlink.h>
0f420b6c 30#include <net/drop_monitor.h>
e5224f0f
JP		 31#define CREATE_TRACE_POINTS
32#include <trace/events/devlink.h>
33
11770091
AS		 34static struct devlink_dpipe_field devlink_dpipe_fields_ethernet[] = {
35 {
12bdc5e1 36 .name = "destination mac",
11770091
AS		 37 .id = DEVLINK_DPIPE_FIELD_ETHERNET_DST_MAC,
38 .bitwidth = 48,
39 },
40};
41
42struct devlink_dpipe_header devlink_dpipe_header_ethernet = {
43 .name = "ethernet",
44 .id = DEVLINK_DPIPE_HEADER_ETHERNET,
45 .fields = devlink_dpipe_fields_ethernet,
46 .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ethernet),
47 .global = true,
48};
49EXPORT_SYMBOL(devlink_dpipe_header_ethernet);
50
3fb886ec
AS		 51static struct devlink_dpipe_field devlink_dpipe_fields_ipv4[] = {
52 {
53 .name = "destination ip",
54 .id = DEVLINK_DPIPE_FIELD_IPV4_DST_IP,
55 .bitwidth = 32,
56 },
57};
58
59struct devlink_dpipe_header devlink_dpipe_header_ipv4 = {
60 .name = "ipv4",
61 .id = DEVLINK_DPIPE_HEADER_IPV4,
62 .fields = devlink_dpipe_fields_ipv4,
63 .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv4),
64 .global = true,
65};
66EXPORT_SYMBOL(devlink_dpipe_header_ipv4);
67
1797f5b3
AS		 68static struct devlink_dpipe_field devlink_dpipe_fields_ipv6[] = {
69 {
70 .name = "destination ip",
71 .id = DEVLINK_DPIPE_FIELD_IPV6_DST_IP,
72 .bitwidth = 128,
73 },
74};
75
76struct devlink_dpipe_header devlink_dpipe_header_ipv6 = {
77 .name = "ipv6",
78 .id = DEVLINK_DPIPE_HEADER_IPV6,
79 .fields = devlink_dpipe_fields_ipv6,
80 .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv6),
81 .global = true,
82};
83EXPORT_SYMBOL(devlink_dpipe_header_ipv6);
84
e5224f0f 85EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwmsg);
57186a5f 86EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwerr);
bfcd3a46
JP		 87
88static LIST_HEAD(devlink_list);
89
90/* devlink_mutex
91 *
92 * An overall lock guarding every operation coming from userspace.
93 * It also guards devlink devices list and it is taken when
94 * driver registers/unregisters it.
95 */
96static DEFINE_MUTEX(devlink_mutex);
97
471f894f 98struct net *devlink_net(const struct devlink *devlink)
bfcd3a46
JP		 99{
100 return read_pnet(&devlink->_net);
101}
471f894f 102EXPORT_SYMBOL_GPL(devlink_net);
bfcd3a46 103
8273fd84 104static void __devlink_net_set(struct devlink *devlink, struct net *net)
bfcd3a46
JP		 105{
106 write_pnet(&devlink->_net, net);
107}
108
8273fd84
JP		 109void devlink_net_set(struct devlink *devlink, struct net *net)
110{
111 if (WARN_ON(devlink->registered))
112 return;
113 __devlink_net_set(devlink, net);
114}
115EXPORT_SYMBOL_GPL(devlink_net_set);
116
bfcd3a46
JP		 117static struct devlink *devlink_get_from_attrs(struct net *net,
118 struct nlattr **attrs)
119{
120 struct devlink *devlink;
121 char *busname;
122 char *devname;
123
124 if (!attrs[DEVLINK_ATTR_BUS_NAME] || !attrs[DEVLINK_ATTR_DEV_NAME])
125 return ERR_PTR(-EINVAL);
126
127 busname = nla_data(attrs[DEVLINK_ATTR_BUS_NAME]);
128 devname = nla_data(attrs[DEVLINK_ATTR_DEV_NAME]);
129
dac7c08f
PP		 130 lockdep_assert_held(&devlink_mutex);
131
bfcd3a46
JP		 132 list_for_each_entry(devlink, &devlink_list, list) {
133 if (strcmp(devlink->dev->bus->name, busname) == 0 &&
134 strcmp(dev_name(devlink->dev), devname) == 0 &&
135 net_eq(devlink_net(devlink), net))
136 return devlink;
137 }
138
139 return ERR_PTR(-ENODEV);
140}
141
142static struct devlink *devlink_get_from_info(struct genl_info *info)
143{
144 return devlink_get_from_attrs(genl_info_net(info), info->attrs);
145}
146
147static struct devlink_port *devlink_port_get_by_index(struct devlink *devlink,
c7282b50 148 unsigned int port_index)
bfcd3a46
JP		 149{
150 struct devlink_port *devlink_port;
151
152 list_for_each_entry(devlink_port, &devlink->port_list, list) {
153 if (devlink_port->index == port_index)
154 return devlink_port;
155 }
156 return NULL;
157}
158
c7282b50
PP		 159static bool devlink_port_index_exists(struct devlink *devlink,
160 unsigned int port_index)
bfcd3a46
JP		 161{
162 return devlink_port_get_by_index(devlink, port_index);
163}
164
165static struct devlink_port *devlink_port_get_from_attrs(struct devlink *devlink,
166 struct nlattr **attrs)
167{
168 if (attrs[DEVLINK_ATTR_PORT_INDEX]) {
169 u32 port_index = nla_get_u32(attrs[DEVLINK_ATTR_PORT_INDEX]);
170 struct devlink_port *devlink_port;
171
172 devlink_port = devlink_port_get_by_index(devlink, port_index);
173 if (!devlink_port)
174 return ERR_PTR(-ENODEV);
175 return devlink_port;
176 }
177 return ERR_PTR(-EINVAL);
178}
179
180static struct devlink_port *devlink_port_get_from_info(struct devlink *devlink,
181 struct genl_info *info)
182{
183 return devlink_port_get_from_attrs(devlink, info->attrs);
184}
185
bf797471
JP		 186struct devlink_sb {
187 struct list_head list;
188 unsigned int index;
189 u32 size;
190 u16 ingress_pools_count;
191 u16 egress_pools_count;
192 u16 ingress_tc_count;
193 u16 egress_tc_count;
194};
195
196static u16 devlink_sb_pool_count(struct devlink_sb *devlink_sb)
197{
198 return devlink_sb->ingress_pools_count + devlink_sb->egress_pools_count;
199}
200
201static struct devlink_sb *devlink_sb_get_by_index(struct devlink *devlink,
202 unsigned int sb_index)
203{
204 struct devlink_sb *devlink_sb;
205
206 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
207 if (devlink_sb->index == sb_index)
208 return devlink_sb;
209 }
210 return NULL;
211}
212
213static bool devlink_sb_index_exists(struct devlink *devlink,
214 unsigned int sb_index)
215{
216 return devlink_sb_get_by_index(devlink, sb_index);
217}
218
219static struct devlink_sb *devlink_sb_get_from_attrs(struct devlink *devlink,
220 struct nlattr **attrs)
221{
222 if (attrs[DEVLINK_ATTR_SB_INDEX]) {
223 u32 sb_index = nla_get_u32(attrs[DEVLINK_ATTR_SB_INDEX]);
224 struct devlink_sb *devlink_sb;
225
226 devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
227 if (!devlink_sb)
228 return ERR_PTR(-ENODEV);
229 return devlink_sb;
230 }
231 return ERR_PTR(-EINVAL);
232}
233
234static struct devlink_sb *devlink_sb_get_from_info(struct devlink *devlink,
235 struct genl_info *info)
236{
237 return devlink_sb_get_from_attrs(devlink, info->attrs);
238}
239
240static int devlink_sb_pool_index_get_from_attrs(struct devlink_sb *devlink_sb,
241 struct nlattr **attrs,
242 u16 *p_pool_index)
243{
244 u16 val;
245
246 if (!attrs[DEVLINK_ATTR_SB_POOL_INDEX])
247 return -EINVAL;
248
249 val = nla_get_u16(attrs[DEVLINK_ATTR_SB_POOL_INDEX]);
250 if (val >= devlink_sb_pool_count(devlink_sb))
251 return -EINVAL;
252 *p_pool_index = val;
253 return 0;
254}
255
256static int devlink_sb_pool_index_get_from_info(struct devlink_sb *devlink_sb,
257 struct genl_info *info,
258 u16 *p_pool_index)
259{
260 return devlink_sb_pool_index_get_from_attrs(devlink_sb, info->attrs,
261 p_pool_index);
262}
263
264static int
265devlink_sb_pool_type_get_from_attrs(struct nlattr **attrs,
266 enum devlink_sb_pool_type *p_pool_type)
267{
268 u8 val;
269
270 if (!attrs[DEVLINK_ATTR_SB_POOL_TYPE])
271 return -EINVAL;
272
273 val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_TYPE]);
274 if (val != DEVLINK_SB_POOL_TYPE_INGRESS &&
275 val != DEVLINK_SB_POOL_TYPE_EGRESS)
276 return -EINVAL;
277 *p_pool_type = val;
278 return 0;
279}
280
281static int
282devlink_sb_pool_type_get_from_info(struct genl_info *info,
283 enum devlink_sb_pool_type *p_pool_type)
284{
285 return devlink_sb_pool_type_get_from_attrs(info->attrs, p_pool_type);
286}
287
288static int
289devlink_sb_th_type_get_from_attrs(struct nlattr **attrs,
290 enum devlink_sb_threshold_type *p_th_type)
291{
292 u8 val;
293
294 if (!attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE])
295 return -EINVAL;
296
297 val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE]);
298 if (val != DEVLINK_SB_THRESHOLD_TYPE_STATIC &&
299 val != DEVLINK_SB_THRESHOLD_TYPE_DYNAMIC)
300 return -EINVAL;
301 *p_th_type = val;
302 return 0;
303}
304
305static int
306devlink_sb_th_type_get_from_info(struct genl_info *info,
307 enum devlink_sb_threshold_type *p_th_type)
308{
309 return devlink_sb_th_type_get_from_attrs(info->attrs, p_th_type);
310}
311
312static int
313devlink_sb_tc_index_get_from_attrs(struct devlink_sb *devlink_sb,
314 struct nlattr **attrs,
315 enum devlink_sb_pool_type pool_type,
316 u16 *p_tc_index)
317{
318 u16 val;
319
320 if (!attrs[DEVLINK_ATTR_SB_TC_INDEX])
321 return -EINVAL;
322
323 val = nla_get_u16(attrs[DEVLINK_ATTR_SB_TC_INDEX]);
324 if (pool_type == DEVLINK_SB_POOL_TYPE_INGRESS &&
325 val >= devlink_sb->ingress_tc_count)
326 return -EINVAL;
327 if (pool_type == DEVLINK_SB_POOL_TYPE_EGRESS &&
328 val >= devlink_sb->egress_tc_count)
329 return -EINVAL;
330 *p_tc_index = val;
331 return 0;
332}
333
334static int
335devlink_sb_tc_index_get_from_info(struct devlink_sb *devlink_sb,
336 struct genl_info *info,
337 enum devlink_sb_pool_type pool_type,
338 u16 *p_tc_index)
339{
340 return devlink_sb_tc_index_get_from_attrs(devlink_sb, info->attrs,
341 pool_type, p_tc_index);
342}
343
b16ebe92
AV		 344struct devlink_region {
345 struct devlink *devlink;
346 struct list_head list;
347 const char *name;
348 struct list_head snapshot_list;
349 u32 max_snapshots;
350 u32 cur_snapshots;
351 u64 size;
352};
353
d7e52722
AV		 354struct devlink_snapshot {
355 struct list_head list;
356 struct devlink_region *region;
357 devlink_snapshot_data_dest_t *data_destructor;
d7e52722
AV		 358 u8 *data;
359 u32 id;
360};
361
b16ebe92
AV		 362static struct devlink_region *
363devlink_region_get_by_name(struct devlink *devlink, const char *region_name)
364{
365 struct devlink_region *region;
366
367 list_for_each_entry(region, &devlink->region_list, list)
368 if (!strcmp(region->name, region_name))
369 return region;
370
371 return NULL;
372}
373
d7e52722
AV		 374static struct devlink_snapshot *
375devlink_region_snapshot_get_by_id(struct devlink_region *region, u32 id)
376{
377 struct devlink_snapshot *snapshot;
378
379 list_for_each_entry(snapshot, &region->snapshot_list, list)
380 if (snapshot->id == id)
381 return snapshot;
382
383 return NULL;
384}
385
1fc2257e
JP		 386#define DEVLINK_NL_FLAG_NEED_DEVLINK BIT(0)
387#define DEVLINK_NL_FLAG_NEED_PORT BIT(1)
bf797471 388#define DEVLINK_NL_FLAG_NEED_SB BIT(2)
2406e7e5
AS		 389
390/* The per devlink instance lock is taken by default in the pre-doit
391 * operation, yet several commands do not require this. The global
392 * devlink lock is taken and protects from disruption by user-calls.
393 */
394#define DEVLINK_NL_FLAG_NO_LOCK BIT(3)
bfcd3a46
JP		 395
396static int devlink_nl_pre_doit(const struct genl_ops *ops,
397 struct sk_buff *skb, struct genl_info *info)
398{
399 struct devlink *devlink;
2406e7e5 400 int err;
bfcd3a46
JP		 401
402 mutex_lock(&devlink_mutex);
403 devlink = devlink_get_from_info(info);
404 if (IS_ERR(devlink)) {
405 mutex_unlock(&devlink_mutex);
406 return PTR_ERR(devlink);
407 }
2406e7e5
AS		 408 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
409 mutex_lock(&devlink->lock);
1fc2257e
JP		 410 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_DEVLINK) {
411 info->user_ptr[0] = devlink;
412 } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT) {
bfcd3a46
JP		 413 struct devlink_port *devlink_port;
414
bfcd3a46
JP		 415 devlink_port = devlink_port_get_from_info(devlink, info);
416 if (IS_ERR(devlink_port)) {
2406e7e5
AS		 417 err = PTR_ERR(devlink_port);
418 goto unlock;
bfcd3a46 419 }
1fc2257e 420 info->user_ptr[0] = devlink_port;
bfcd3a46 421 }
bf797471
JP		 422 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_SB) {
423 struct devlink_sb *devlink_sb;
424
425 devlink_sb = devlink_sb_get_from_info(devlink, info);
426 if (IS_ERR(devlink_sb)) {
2406e7e5
AS		 427 err = PTR_ERR(devlink_sb);
428 goto unlock;
bf797471
JP		 429 }
430 info->user_ptr[1] = devlink_sb;
431 }
bfcd3a46 432 return 0;
2406e7e5
AS		 433
434unlock:
435 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
436 mutex_unlock(&devlink->lock);
437 mutex_unlock(&devlink_mutex);
438 return err;
bfcd3a46
JP		 439}
440
441static void devlink_nl_post_doit(const struct genl_ops *ops,
442 struct sk_buff *skb, struct genl_info *info)
443{
2406e7e5
AS		 444 struct devlink *devlink;
445
070c63f2
JP		 446 /* When devlink changes netns, it would not be found
447 * by devlink_get_from_info(). So try if it is stored first.
448 */
449 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_DEVLINK) {
450 devlink = info->user_ptr[0];
451 } else {
452 devlink = devlink_get_from_info(info);
453 WARN_ON(IS_ERR(devlink));
454 }
455 if (!IS_ERR(devlink) && ~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
2406e7e5 456 mutex_unlock(&devlink->lock);
bfcd3a46
JP		 457 mutex_unlock(&devlink_mutex);
458}
459
489111e5 460static struct genl_family devlink_nl_family;
bfcd3a46
JP		 461
462enum devlink_multicast_groups {
463 DEVLINK_MCGRP_CONFIG,
464};
465
466static const struct genl_multicast_group devlink_nl_mcgrps[] = {
467 [DEVLINK_MCGRP_CONFIG] = { .name = DEVLINK_GENL_MCGRP_CONFIG_NAME },
468};
469
470static int devlink_nl_put_handle(struct sk_buff *msg, struct devlink *devlink)
471{
472 if (nla_put_string(msg, DEVLINK_ATTR_BUS_NAME, devlink->dev->bus->name))
473 return -EMSGSIZE;
474 if (nla_put_string(msg, DEVLINK_ATTR_DEV_NAME, dev_name(devlink->dev)))
475 return -EMSGSIZE;
476 return 0;
477}
478
479static int devlink_nl_fill(struct sk_buff *msg, struct devlink *devlink,
480 enum devlink_command cmd, u32 portid,
481 u32 seq, int flags)
482{
483 void *hdr;
484
485 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
486 if (!hdr)
487 return -EMSGSIZE;
488
489 if (devlink_nl_put_handle(msg, devlink))
490 goto nla_put_failure;
2670ac26
JP		 491 if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_FAILED, devlink->reload_failed))
492 goto nla_put_failure;
bfcd3a46
JP		 493
494 genlmsg_end(msg, hdr);
495 return 0;
496
497nla_put_failure:
498 genlmsg_cancel(msg, hdr);
499 return -EMSGSIZE;
500}
501
502static void devlink_notify(struct devlink *devlink, enum devlink_command cmd)
503{
504 struct sk_buff *msg;
505 int err;
506
507 WARN_ON(cmd != DEVLINK_CMD_NEW && cmd != DEVLINK_CMD_DEL);
508
509 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
510 if (!msg)
511 return;
512
513 err = devlink_nl_fill(msg, devlink, cmd, 0, 0, 0);
514 if (err) {
515 nlmsg_free(msg);
516 return;
517 }
518
519 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
520 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
521}
522
b9ffcbaf
JP		 523static int devlink_nl_port_attrs_put(struct sk_buff *msg,
524 struct devlink_port *devlink_port)
525{
526 struct devlink_port_attrs *attrs = &devlink_port->attrs;
527
528 if (!attrs->set)
529 return 0;
5ec1380a
JP		 530 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_FLAVOUR, attrs->flavour))
531 return -EMSGSIZE;
58b6be41
PP		 532 switch (devlink_port->attrs.flavour) {
533 case DEVLINK_PORT_FLAVOUR_PCI_PF:
98fd2d65
PP		 534 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER,
535 attrs->pci_pf.pf))
536 return -EMSGSIZE;
58b6be41
PP		 537 break;
538 case DEVLINK_PORT_FLAVOUR_PCI_VF:
e41b6bf3
PP		 539 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER,
540 attrs->pci_vf.pf) ||
541 nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_VF_NUMBER,
542 attrs->pci_vf.vf))
543 return -EMSGSIZE;
58b6be41
PP		 544 break;
545 case DEVLINK_PORT_FLAVOUR_PHYSICAL:
546 case DEVLINK_PORT_FLAVOUR_CPU:
547 case DEVLINK_PORT_FLAVOUR_DSA:
acf1ee44 548 case DEVLINK_PORT_FLAVOUR_VIRTUAL:
58b6be41
PP		 549 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_NUMBER,
550 attrs->phys.port_number))
551 return -EMSGSIZE;
552 if (!attrs->split)
553 return 0;
554 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_GROUP,
555 attrs->phys.port_number))
556 return -EMSGSIZE;
557 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_SUBPORT_NUMBER,
558 attrs->phys.split_subport_number))
559 return -EMSGSIZE;
560 break;
561 default:
562 break;
98fd2d65 563 }
b9ffcbaf
JP		 564 return 0;
565}
566
bfcd3a46
JP		 567static int devlink_nl_port_fill(struct sk_buff *msg, struct devlink *devlink,
568 struct devlink_port *devlink_port,
569 enum devlink_command cmd, u32 portid,
570 u32 seq, int flags)
571{
572 void *hdr;
573
574 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
575 if (!hdr)
576 return -EMSGSIZE;
577
578 if (devlink_nl_put_handle(msg, devlink))
579 goto nla_put_failure;
580 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
581 goto nla_put_failure;
b8f97554 582
0f420b6c 583 spin_lock_bh(&devlink_port->type_lock);
bfcd3a46 584 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_TYPE, devlink_port->type))
b8f97554 585 goto nla_put_failure_type_locked;
bfcd3a46
JP		 586 if (devlink_port->desired_type != DEVLINK_PORT_TYPE_NOTSET &&
587 nla_put_u16(msg, DEVLINK_ATTR_PORT_DESIRED_TYPE,
588 devlink_port->desired_type))
b8f97554 589 goto nla_put_failure_type_locked;
bfcd3a46
JP		 590 if (devlink_port->type == DEVLINK_PORT_TYPE_ETH) {
591 struct net_device *netdev = devlink_port->type_dev;
592
593 if (netdev &&
594 (nla_put_u32(msg, DEVLINK_ATTR_PORT_NETDEV_IFINDEX,
595 netdev->ifindex) ||
596 nla_put_string(msg, DEVLINK_ATTR_PORT_NETDEV_NAME,
597 netdev->name)))
b8f97554 598 goto nla_put_failure_type_locked;
bfcd3a46
JP		 599 }
600 if (devlink_port->type == DEVLINK_PORT_TYPE_IB) {
601 struct ib_device *ibdev = devlink_port->type_dev;
602
603 if (ibdev &&
604 nla_put_string(msg, DEVLINK_ATTR_PORT_IBDEV_NAME,
605 ibdev->name))
b8f97554 606 goto nla_put_failure_type_locked;
bfcd3a46 607 }
0f420b6c 608 spin_unlock_bh(&devlink_port->type_lock);
b9ffcbaf 609 if (devlink_nl_port_attrs_put(msg, devlink_port))
bfcd3a46
JP		 610 goto nla_put_failure;
611
612 genlmsg_end(msg, hdr);
613 return 0;
614
b8f97554 615nla_put_failure_type_locked:
0f420b6c 616 spin_unlock_bh(&devlink_port->type_lock);
bfcd3a46
JP		 617nla_put_failure:
618 genlmsg_cancel(msg, hdr);
619 return -EMSGSIZE;
620}
621
622static void devlink_port_notify(struct devlink_port *devlink_port,
623 enum devlink_command cmd)
624{
625 struct devlink *devlink = devlink_port->devlink;
626 struct sk_buff *msg;
627 int err;
628
629 if (!devlink_port->registered)
630 return;
631
632 WARN_ON(cmd != DEVLINK_CMD_PORT_NEW && cmd != DEVLINK_CMD_PORT_DEL);
633
634 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
635 if (!msg)
636 return;
637
638 err = devlink_nl_port_fill(msg, devlink, devlink_port, cmd, 0, 0, 0);
639 if (err) {
640 nlmsg_free(msg);
641 return;
642 }
643
644 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
645 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
646}
647
648static int devlink_nl_cmd_get_doit(struct sk_buff *skb, struct genl_info *info)
649{
650 struct devlink *devlink = info->user_ptr[0];
651 struct sk_buff *msg;
652 int err;
653
654 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
655 if (!msg)
656 return -ENOMEM;
657
658 err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
659 info->snd_portid, info->snd_seq, 0);
660 if (err) {
661 nlmsg_free(msg);
662 return err;
663 }
664
665 return genlmsg_reply(msg, info);
666}
667
668static int devlink_nl_cmd_get_dumpit(struct sk_buff *msg,
669 struct netlink_callback *cb)
670{
671 struct devlink *devlink;
672 int start = cb->args[0];
673 int idx = 0;
674 int err;
675
676 mutex_lock(&devlink_mutex);
677 list_for_each_entry(devlink, &devlink_list, list) {
678 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
679 continue;
680 if (idx < start) {
681 idx++;
682 continue;
683 }
684 err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
685 NETLINK_CB(cb->skb).portid,
686 cb->nlh->nlmsg_seq, NLM_F_MULTI);
687 if (err)
688 goto out;
689 idx++;
690 }
691out:
692 mutex_unlock(&devlink_mutex);
693
694 cb->args[0] = idx;
695 return msg->len;
696}
697
698static int devlink_nl_cmd_port_get_doit(struct sk_buff *skb,
699 struct genl_info *info)
700{
1fc2257e
JP		 701 struct devlink_port *devlink_port = info->user_ptr[0];
702 struct devlink *devlink = devlink_port->devlink;
bfcd3a46
JP		 703 struct sk_buff *msg;
704 int err;
705
706 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
707 if (!msg)
708 return -ENOMEM;
709
710 err = devlink_nl_port_fill(msg, devlink, devlink_port,
711 DEVLINK_CMD_PORT_NEW,
712 info->snd_portid, info->snd_seq, 0);
713 if (err) {
714 nlmsg_free(msg);
715 return err;
716 }
717
718 return genlmsg_reply(msg, info);
719}
720
721static int devlink_nl_cmd_port_get_dumpit(struct sk_buff *msg,
722 struct netlink_callback *cb)
723{
724 struct devlink *devlink;
725 struct devlink_port *devlink_port;
726 int start = cb->args[0];
727 int idx = 0;
728 int err;
729
730 mutex_lock(&devlink_mutex);
bfcd3a46
JP		 731 list_for_each_entry(devlink, &devlink_list, list) {
732 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
733 continue;
2406e7e5 734 mutex_lock(&devlink->lock);
bfcd3a46
JP		 735 list_for_each_entry(devlink_port, &devlink->port_list, list) {
736 if (idx < start) {
737 idx++;
738 continue;
739 }
740 err = devlink_nl_port_fill(msg, devlink, devlink_port,
741 DEVLINK_CMD_NEW,
742 NETLINK_CB(cb->skb).portid,
743 cb->nlh->nlmsg_seq,
744 NLM_F_MULTI);
2406e7e5
AS		 745 if (err) {
746 mutex_unlock(&devlink->lock);
bfcd3a46 747 goto out;
2406e7e5 748 }
bfcd3a46
JP		 749 idx++;
750 }
2406e7e5 751 mutex_unlock(&devlink->lock);
bfcd3a46
JP		 752 }
753out:
bfcd3a46
JP		 754 mutex_unlock(&devlink_mutex);
755
756 cb->args[0] = idx;
757 return msg->len;
758}
759
760static int devlink_port_type_set(struct devlink *devlink,
761 struct devlink_port *devlink_port,
762 enum devlink_port_type port_type)
763
764{
765 int err;
766
be6fe1d8 767 if (devlink->ops->port_type_set) {
bfcd3a46
JP		 768 if (port_type == DEVLINK_PORT_TYPE_NOTSET)
769 return -EINVAL;
6edf1017
ER		 770 if (port_type == devlink_port->type)
771 return 0;
bfcd3a46
JP		 772 err = devlink->ops->port_type_set(devlink_port, port_type);
773 if (err)
774 return err;
775 devlink_port->desired_type = port_type;
776 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
777 return 0;
778 }
779 return -EOPNOTSUPP;
780}
781
782static int devlink_nl_cmd_port_set_doit(struct sk_buff *skb,
783 struct genl_info *info)
784{
1fc2257e
JP		 785 struct devlink_port *devlink_port = info->user_ptr[0];
786 struct devlink *devlink = devlink_port->devlink;
bfcd3a46
JP		 787 int err;
788
789 if (info->attrs[DEVLINK_ATTR_PORT_TYPE]) {
790 enum devlink_port_type port_type;
791
792 port_type = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_TYPE]);
793 err = devlink_port_type_set(devlink, devlink_port, port_type);
794 if (err)
795 return err;
796 }
797 return 0;
798}
799
ac0fc8a1
DA		 800static int devlink_port_split(struct devlink *devlink, u32 port_index,
801 u32 count, struct netlink_ext_ack *extack)
bfcd3a46
JP		 802
803{
be6fe1d8 804 if (devlink->ops->port_split)
ac0fc8a1
DA		 805 return devlink->ops->port_split(devlink, port_index, count,
806 extack);
bfcd3a46
JP		 807 return -EOPNOTSUPP;
808}
809
810static int devlink_nl_cmd_port_split_doit(struct sk_buff *skb,
811 struct genl_info *info)
812{
813 struct devlink *devlink = info->user_ptr[0];
814 u32 port_index;
815 u32 count;
816
817 if (!info->attrs[DEVLINK_ATTR_PORT_INDEX] ||
818 !info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT])
819 return -EINVAL;
820
821 port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
822 count = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT]);
ac0fc8a1 823 return devlink_port_split(devlink, port_index, count, info->extack);
bfcd3a46
JP		 824}
825
ac0fc8a1
DA		 826static int devlink_port_unsplit(struct devlink *devlink, u32 port_index,
827 struct netlink_ext_ack *extack)
bfcd3a46
JP		 828
829{
be6fe1d8 830 if (devlink->ops->port_unsplit)
ac0fc8a1 831 return devlink->ops->port_unsplit(devlink, port_index, extack);
bfcd3a46
JP		 832 return -EOPNOTSUPP;
833}
834
835static int devlink_nl_cmd_port_unsplit_doit(struct sk_buff *skb,
836 struct genl_info *info)
837{
838 struct devlink *devlink = info->user_ptr[0];
839 u32 port_index;
840
841 if (!info->attrs[DEVLINK_ATTR_PORT_INDEX])
842 return -EINVAL;
843
844 port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
ac0fc8a1 845 return devlink_port_unsplit(devlink, port_index, info->extack);
bfcd3a46
JP		 846}
847
bf797471
JP		 848static int devlink_nl_sb_fill(struct sk_buff *msg, struct devlink *devlink,
849 struct devlink_sb *devlink_sb,
850 enum devlink_command cmd, u32 portid,
851 u32 seq, int flags)
852{
853 void *hdr;
854
855 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
856 if (!hdr)
857 return -EMSGSIZE;
858
859 if (devlink_nl_put_handle(msg, devlink))
860 goto nla_put_failure;
861 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
862 goto nla_put_failure;
863 if (nla_put_u32(msg, DEVLINK_ATTR_SB_SIZE, devlink_sb->size))
864 goto nla_put_failure;
865 if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_POOL_COUNT,
866 devlink_sb->ingress_pools_count))
867 goto nla_put_failure;
868 if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_POOL_COUNT,
869 devlink_sb->egress_pools_count))
870 goto nla_put_failure;
871 if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_TC_COUNT,
872 devlink_sb->ingress_tc_count))
873 goto nla_put_failure;
874 if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_TC_COUNT,
875 devlink_sb->egress_tc_count))
876 goto nla_put_failure;
877
878 genlmsg_end(msg, hdr);
879 return 0;
880
881nla_put_failure:
882 genlmsg_cancel(msg, hdr);
883 return -EMSGSIZE;
884}
885
886static int devlink_nl_cmd_sb_get_doit(struct sk_buff *skb,
887 struct genl_info *info)
888{
889 struct devlink *devlink = info->user_ptr[0];
890 struct devlink_sb *devlink_sb = info->user_ptr[1];
891 struct sk_buff *msg;
892 int err;
893
894 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
895 if (!msg)
896 return -ENOMEM;
897
898 err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
899 DEVLINK_CMD_SB_NEW,
900 info->snd_portid, info->snd_seq, 0);
901 if (err) {
902 nlmsg_free(msg);
903 return err;
904 }
905
906 return genlmsg_reply(msg, info);
907}
908
909static int devlink_nl_cmd_sb_get_dumpit(struct sk_buff *msg,
910 struct netlink_callback *cb)
911{
912 struct devlink *devlink;
913 struct devlink_sb *devlink_sb;
914 int start = cb->args[0];
915 int idx = 0;
916 int err;
917
918 mutex_lock(&devlink_mutex);
919 list_for_each_entry(devlink, &devlink_list, list) {
920 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
921 continue;
2406e7e5 922 mutex_lock(&devlink->lock);
bf797471
JP		 923 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
924 if (idx < start) {
925 idx++;
926 continue;
927 }
928 err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
929 DEVLINK_CMD_SB_NEW,
930 NETLINK_CB(cb->skb).portid,
931 cb->nlh->nlmsg_seq,
932 NLM_F_MULTI);
2406e7e5
AS		 933 if (err) {
934 mutex_unlock(&devlink->lock);
bf797471 935 goto out;
2406e7e5 936 }
bf797471
JP		 937 idx++;
938 }
2406e7e5 939 mutex_unlock(&devlink->lock);
bf797471
JP		 940 }
941out:
942 mutex_unlock(&devlink_mutex);
943
944 cb->args[0] = idx;
945 return msg->len;
946}
947
948static int devlink_nl_sb_pool_fill(struct sk_buff *msg, struct devlink *devlink,
949 struct devlink_sb *devlink_sb,
950 u16 pool_index, enum devlink_command cmd,
951 u32 portid, u32 seq, int flags)
952{
953 struct devlink_sb_pool_info pool_info;
954 void *hdr;
955 int err;
956
957 err = devlink->ops->sb_pool_get(devlink, devlink_sb->index,
958 pool_index, &pool_info);
959 if (err)
960 return err;
961
962 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
963 if (!hdr)
964 return -EMSGSIZE;
965
966 if (devlink_nl_put_handle(msg, devlink))
967 goto nla_put_failure;
968 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
969 goto nla_put_failure;
970 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
971 goto nla_put_failure;
972 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_info.pool_type))
973 goto nla_put_failure;
974 if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_SIZE, pool_info.size))
975 goto nla_put_failure;
976 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE,
977 pool_info.threshold_type))
978 goto nla_put_failure;
bff5731d
JK		 979 if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_CELL_SIZE,
980 pool_info.cell_size))
981 goto nla_put_failure;
bf797471
JP		 982
983 genlmsg_end(msg, hdr);
984 return 0;
985
986nla_put_failure:
987 genlmsg_cancel(msg, hdr);
988 return -EMSGSIZE;
989}
990
991static int devlink_nl_cmd_sb_pool_get_doit(struct sk_buff *skb,
992 struct genl_info *info)
993{
994 struct devlink *devlink = info->user_ptr[0];
995 struct devlink_sb *devlink_sb = info->user_ptr[1];
996 struct sk_buff *msg;
997 u16 pool_index;
998 int err;
999
1000 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1001 &pool_index);
1002 if (err)
1003 return err;
1004
be6fe1d8 1005 if (!devlink->ops->sb_pool_get)
bf797471
JP		 1006 return -EOPNOTSUPP;
1007
1008 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1009 if (!msg)
1010 return -ENOMEM;
1011
1012 err = devlink_nl_sb_pool_fill(msg, devlink, devlink_sb, pool_index,
1013 DEVLINK_CMD_SB_POOL_NEW,
1014 info->snd_portid, info->snd_seq, 0);
1015 if (err) {
1016 nlmsg_free(msg);
1017 return err;
1018 }
1019
1020 return genlmsg_reply(msg, info);
1021}
1022
1023static int __sb_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
1024 struct devlink *devlink,
1025 struct devlink_sb *devlink_sb,
1026 u32 portid, u32 seq)
1027{
1028 u16 pool_count = devlink_sb_pool_count(devlink_sb);
1029 u16 pool_index;
1030 int err;
1031
1032 for (pool_index = 0; pool_index < pool_count; pool_index++) {
1033 if (*p_idx < start) {
1034 (*p_idx)++;
1035 continue;
1036 }
1037 err = devlink_nl_sb_pool_fill(msg, devlink,
1038 devlink_sb,
1039 pool_index,
1040 DEVLINK_CMD_SB_POOL_NEW,
1041 portid, seq, NLM_F_MULTI);
1042 if (err)
1043 return err;
1044 (*p_idx)++;
1045 }
1046 return 0;
1047}
1048
1049static int devlink_nl_cmd_sb_pool_get_dumpit(struct sk_buff *msg,
1050 struct netlink_callback *cb)
1051{
1052 struct devlink *devlink;
1053 struct devlink_sb *devlink_sb;
1054 int start = cb->args[0];
1055 int idx = 0;
c62c2cfb 1056 int err = 0;
bf797471
JP		 1057
1058 mutex_lock(&devlink_mutex);
1059 list_for_each_entry(devlink, &devlink_list, list) {
1060 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
be6fe1d8 1061 !devlink->ops->sb_pool_get)
bf797471 1062 continue;
2406e7e5 1063 mutex_lock(&devlink->lock);
bf797471
JP		 1064 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
1065 err = __sb_pool_get_dumpit(msg, start, &idx, devlink,
1066 devlink_sb,
1067 NETLINK_CB(cb->skb).portid,
1068 cb->nlh->nlmsg_seq);
2406e7e5
AS		 1069 if (err && err != -EOPNOTSUPP) {
1070 mutex_unlock(&devlink->lock);
bf797471 1071 goto out;
2406e7e5 1072 }
bf797471 1073 }
2406e7e5 1074 mutex_unlock(&devlink->lock);
bf797471
JP		 1075 }
1076out:
1077 mutex_unlock(&devlink_mutex);
1078
c62c2cfb
JP		 1079 if (err != -EMSGSIZE)
1080 return err;
1081
bf797471
JP		 1082 cb->args[0] = idx;
1083 return msg->len;
1084}
1085
1086static int devlink_sb_pool_set(struct devlink *devlink, unsigned int sb_index,
1087 u16 pool_index, u32 size,
f2ad1a52
IS		 1088 enum devlink_sb_threshold_type threshold_type,
1089 struct netlink_ext_ack *extack)
bf797471
JP		 1090
1091{
1092 const struct devlink_ops *ops = devlink->ops;
1093
be6fe1d8 1094 if (ops->sb_pool_set)
bf797471 1095 return ops->sb_pool_set(devlink, sb_index, pool_index,
f2ad1a52 1096 size, threshold_type, extack);
bf797471
JP		 1097 return -EOPNOTSUPP;
1098}
1099
1100static int devlink_nl_cmd_sb_pool_set_doit(struct sk_buff *skb,
1101 struct genl_info *info)
1102{
1103 struct devlink *devlink = info->user_ptr[0];
1104 struct devlink_sb *devlink_sb = info->user_ptr[1];
1105 enum devlink_sb_threshold_type threshold_type;
1106 u16 pool_index;
1107 u32 size;
1108 int err;
1109
1110 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1111 &pool_index);
1112 if (err)
1113 return err;
1114
1115 err = devlink_sb_th_type_get_from_info(info, &threshold_type);
1116 if (err)
1117 return err;
1118
1119 if (!info->attrs[DEVLINK_ATTR_SB_POOL_SIZE])
1120 return -EINVAL;
1121
1122 size = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_POOL_SIZE]);
1123 return devlink_sb_pool_set(devlink, devlink_sb->index,
f2ad1a52
IS		 1124 pool_index, size, threshold_type,
1125 info->extack);
bf797471
JP		 1126}
1127
1128static int devlink_nl_sb_port_pool_fill(struct sk_buff *msg,
1129 struct devlink *devlink,
1130 struct devlink_port *devlink_port,
1131 struct devlink_sb *devlink_sb,
1132 u16 pool_index,
1133 enum devlink_command cmd,
1134 u32 portid, u32 seq, int flags)
1135{
df38dafd 1136 const struct devlink_ops *ops = devlink->ops;
bf797471
JP		 1137 u32 threshold;
1138 void *hdr;
1139 int err;
1140
df38dafd
JP		 1141 err = ops->sb_port_pool_get(devlink_port, devlink_sb->index,
1142 pool_index, &threshold);
bf797471
JP		 1143 if (err)
1144 return err;
1145
1146 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1147 if (!hdr)
1148 return -EMSGSIZE;
1149
1150 if (devlink_nl_put_handle(msg, devlink))
1151 goto nla_put_failure;
1152 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
1153 goto nla_put_failure;
1154 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
1155 goto nla_put_failure;
1156 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
1157 goto nla_put_failure;
1158 if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
1159 goto nla_put_failure;
1160
df38dafd
JP		 1161 if (ops->sb_occ_port_pool_get) {
1162 u32 cur;
1163 u32 max;
1164
1165 err = ops->sb_occ_port_pool_get(devlink_port, devlink_sb->index,
1166 pool_index, &cur, &max);
1167 if (err && err != -EOPNOTSUPP)
1168 return err;
1169 if (!err) {
1170 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
1171 goto nla_put_failure;
1172 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
1173 goto nla_put_failure;
1174 }
1175 }
1176
bf797471
JP		 1177 genlmsg_end(msg, hdr);
1178 return 0;
1179
1180nla_put_failure:
1181 genlmsg_cancel(msg, hdr);
1182 return -EMSGSIZE;
1183}
1184
1185static int devlink_nl_cmd_sb_port_pool_get_doit(struct sk_buff *skb,
1186 struct genl_info *info)
1187{
1188 struct devlink_port *devlink_port = info->user_ptr[0];
1189 struct devlink *devlink = devlink_port->devlink;
1190 struct devlink_sb *devlink_sb = info->user_ptr[1];
1191 struct sk_buff *msg;
1192 u16 pool_index;
1193 int err;
1194
1195 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1196 &pool_index);
1197 if (err)
1198 return err;
1199
be6fe1d8 1200 if (!devlink->ops->sb_port_pool_get)
bf797471
JP		 1201 return -EOPNOTSUPP;
1202
1203 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1204 if (!msg)
1205 return -ENOMEM;
1206
1207 err = devlink_nl_sb_port_pool_fill(msg, devlink, devlink_port,
1208 devlink_sb, pool_index,
1209 DEVLINK_CMD_SB_PORT_POOL_NEW,
1210 info->snd_portid, info->snd_seq, 0);
1211 if (err) {
1212 nlmsg_free(msg);
1213 return err;
1214 }
1215
1216 return genlmsg_reply(msg, info);
1217}
1218
1219static int __sb_port_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
1220 struct devlink *devlink,
1221 struct devlink_sb *devlink_sb,
1222 u32 portid, u32 seq)
1223{
1224 struct devlink_port *devlink_port;
1225 u16 pool_count = devlink_sb_pool_count(devlink_sb);
1226 u16 pool_index;
1227 int err;
1228
1229 list_for_each_entry(devlink_port, &devlink->port_list, list) {
1230 for (pool_index = 0; pool_index < pool_count; pool_index++) {
1231 if (*p_idx < start) {
1232 (*p_idx)++;
1233 continue;
1234 }
1235 err = devlink_nl_sb_port_pool_fill(msg, devlink,
1236 devlink_port,
1237 devlink_sb,
1238 pool_index,
1239 DEVLINK_CMD_SB_PORT_POOL_NEW,
1240 portid, seq,
1241 NLM_F_MULTI);
1242 if (err)
1243 return err;
1244 (*p_idx)++;
1245 }
1246 }
1247 return 0;
1248}
1249
1250static int devlink_nl_cmd_sb_port_pool_get_dumpit(struct sk_buff *msg,
1251 struct netlink_callback *cb)
1252{
1253 struct devlink *devlink;
1254 struct devlink_sb *devlink_sb;
1255 int start = cb->args[0];
1256 int idx = 0;
c62c2cfb 1257 int err = 0;
bf797471
JP		 1258
1259 mutex_lock(&devlink_mutex);
bf797471
JP		 1260 list_for_each_entry(devlink, &devlink_list, list) {
1261 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
be6fe1d8 1262 !devlink->ops->sb_port_pool_get)
bf797471 1263 continue;
2406e7e5 1264 mutex_lock(&devlink->lock);
bf797471
JP		 1265 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
1266 err = __sb_port_pool_get_dumpit(msg, start, &idx,
1267 devlink, devlink_sb,
1268 NETLINK_CB(cb->skb).portid,
1269 cb->nlh->nlmsg_seq);
2406e7e5
AS		 1270 if (err && err != -EOPNOTSUPP) {
1271 mutex_unlock(&devlink->lock);
bf797471 1272 goto out;
2406e7e5 1273 }
bf797471 1274 }
2406e7e5 1275 mutex_unlock(&devlink->lock);
bf797471
JP		 1276 }
1277out:
bf797471
JP		 1278 mutex_unlock(&devlink_mutex);
1279
c62c2cfb
JP		 1280 if (err != -EMSGSIZE)
1281 return err;
1282
bf797471
JP		 1283 cb->args[0] = idx;
1284 return msg->len;
1285}
1286
1287static int devlink_sb_port_pool_set(struct devlink_port *devlink_port,
1288 unsigned int sb_index, u16 pool_index,
f2ad1a52
IS		 1289 u32 threshold,
1290 struct netlink_ext_ack *extack)
bf797471
JP		 1291
1292{
1293 const struct devlink_ops *ops = devlink_port->devlink->ops;
1294
be6fe1d8 1295 if (ops->sb_port_pool_set)
bf797471 1296 return ops->sb_port_pool_set(devlink_port, sb_index,
f2ad1a52 1297 pool_index, threshold, extack);
bf797471
JP		 1298 return -EOPNOTSUPP;
1299}
1300
1301static int devlink_nl_cmd_sb_port_pool_set_doit(struct sk_buff *skb,
1302 struct genl_info *info)
1303{
1304 struct devlink_port *devlink_port = info->user_ptr[0];
1305 struct devlink_sb *devlink_sb = info->user_ptr[1];
1306 u16 pool_index;
1307 u32 threshold;
1308 int err;
1309
1310 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1311 &pool_index);
1312 if (err)
1313 return err;
1314
1315 if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD])
1316 return -EINVAL;
1317
1318 threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
1319 return devlink_sb_port_pool_set(devlink_port, devlink_sb->index,
f2ad1a52 1320 pool_index, threshold, info->extack);
bf797471
JP		 1321}
1322
1323static int
1324devlink_nl_sb_tc_pool_bind_fill(struct sk_buff *msg, struct devlink *devlink,
1325 struct devlink_port *devlink_port,
1326 struct devlink_sb *devlink_sb, u16 tc_index,
1327 enum devlink_sb_pool_type pool_type,
1328 enum devlink_command cmd,
1329 u32 portid, u32 seq, int flags)
1330{
df38dafd 1331 const struct devlink_ops *ops = devlink->ops;
bf797471
JP		 1332 u16 pool_index;
1333 u32 threshold;
1334 void *hdr;
1335 int err;
1336
df38dafd
JP		 1337 err = ops->sb_tc_pool_bind_get(devlink_port, devlink_sb->index,
1338 tc_index, pool_type,
1339 &pool_index, &threshold);
bf797471
JP		 1340 if (err)
1341 return err;
1342
1343 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1344 if (!hdr)
1345 return -EMSGSIZE;
1346
1347 if (devlink_nl_put_handle(msg, devlink))
1348 goto nla_put_failure;
1349 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
1350 goto nla_put_failure;
1351 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
1352 goto nla_put_failure;
1353 if (nla_put_u16(msg, DEVLINK_ATTR_SB_TC_INDEX, tc_index))
1354 goto nla_put_failure;
1355 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_type))
1356 goto nla_put_failure;
1357 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
1358 goto nla_put_failure;
1359 if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
1360 goto nla_put_failure;
1361
df38dafd
JP		 1362 if (ops->sb_occ_tc_port_bind_get) {
1363 u32 cur;
1364 u32 max;
1365
1366 err = ops->sb_occ_tc_port_bind_get(devlink_port,
1367 devlink_sb->index,
1368 tc_index, pool_type,
1369 &cur, &max);
1370 if (err && err != -EOPNOTSUPP)
1371 return err;
1372 if (!err) {
1373 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
1374 goto nla_put_failure;
1375 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
1376 goto nla_put_failure;
1377 }
1378 }
1379
bf797471
JP		 1380 genlmsg_end(msg, hdr);
1381 return 0;
1382
1383nla_put_failure:
1384 genlmsg_cancel(msg, hdr);
1385 return -EMSGSIZE;
1386}
1387
1388static int devlink_nl_cmd_sb_tc_pool_bind_get_doit(struct sk_buff *skb,
1389 struct genl_info *info)
1390{
1391 struct devlink_port *devlink_port = info->user_ptr[0];
1392 struct devlink *devlink = devlink_port->devlink;
1393 struct devlink_sb *devlink_sb = info->user_ptr[1];
1394 struct sk_buff *msg;
1395 enum devlink_sb_pool_type pool_type;
1396 u16 tc_index;
1397 int err;
1398
1399 err = devlink_sb_pool_type_get_from_info(info, &pool_type);
1400 if (err)
1401 return err;
1402
1403 err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
1404 pool_type, &tc_index);
1405 if (err)
1406 return err;
1407
be6fe1d8 1408 if (!devlink->ops->sb_tc_pool_bind_get)
bf797471
JP		 1409 return -EOPNOTSUPP;
1410
1411 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1412 if (!msg)
1413 return -ENOMEM;
1414
1415 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink, devlink_port,
1416 devlink_sb, tc_index, pool_type,
1417 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
1418 info->snd_portid,
1419 info->snd_seq, 0);
1420 if (err) {
1421 nlmsg_free(msg);
1422 return err;
1423 }
1424
1425 return genlmsg_reply(msg, info);
1426}
1427
1428static int __sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
1429 int start, int *p_idx,
1430 struct devlink *devlink,
1431 struct devlink_sb *devlink_sb,
1432 u32 portid, u32 seq)
1433{
1434 struct devlink_port *devlink_port;
1435 u16 tc_index;
1436 int err;
1437
1438 list_for_each_entry(devlink_port, &devlink->port_list, list) {
1439 for (tc_index = 0;
1440 tc_index < devlink_sb->ingress_tc_count; tc_index++) {
1441 if (*p_idx < start) {
1442 (*p_idx)++;
1443 continue;
1444 }
1445 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
1446 devlink_port,
1447 devlink_sb,
1448 tc_index,
1449 DEVLINK_SB_POOL_TYPE_INGRESS,
1450 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
1451 portid, seq,
1452 NLM_F_MULTI);
1453 if (err)
1454 return err;
1455 (*p_idx)++;
1456 }
1457 for (tc_index = 0;
1458 tc_index < devlink_sb->egress_tc_count; tc_index++) {
1459 if (*p_idx < start) {
1460 (*p_idx)++;
1461 continue;
1462 }
1463 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
1464 devlink_port,
1465 devlink_sb,
1466 tc_index,
1467 DEVLINK_SB_POOL_TYPE_EGRESS,
1468 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
1469 portid, seq,
1470 NLM_F_MULTI);
1471 if (err)
1472 return err;
1473 (*p_idx)++;
1474 }
1475 }
1476 return 0;
1477}
1478
1479static int
1480devlink_nl_cmd_sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
1481 struct netlink_callback *cb)
1482{
1483 struct devlink *devlink;
1484 struct devlink_sb *devlink_sb;
1485 int start = cb->args[0];
1486 int idx = 0;
c62c2cfb 1487 int err = 0;
bf797471
JP		 1488
1489 mutex_lock(&devlink_mutex);
bf797471
JP		 1490 list_for_each_entry(devlink, &devlink_list, list) {
1491 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
be6fe1d8 1492 !devlink->ops->sb_tc_pool_bind_get)
bf797471 1493 continue;
2406e7e5
AS		 1494
1495 mutex_lock(&devlink->lock);
bf797471
JP		 1496 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
1497 err = __sb_tc_pool_bind_get_dumpit(msg, start, &idx,
1498 devlink,
1499 devlink_sb,
1500 NETLINK_CB(cb->skb).portid,
1501 cb->nlh->nlmsg_seq);
2406e7e5
AS		 1502 if (err && err != -EOPNOTSUPP) {
1503 mutex_unlock(&devlink->lock);
bf797471 1504 goto out;
2406e7e5 1505 }
bf797471 1506 }
2406e7e5 1507 mutex_unlock(&devlink->lock);
bf797471
JP		 1508 }
1509out:
bf797471
JP		 1510 mutex_unlock(&devlink_mutex);
1511
c62c2cfb
JP		 1512 if (err != -EMSGSIZE)
1513 return err;
1514
bf797471
JP		 1515 cb->args[0] = idx;
1516 return msg->len;
1517}
1518
1519static int devlink_sb_tc_pool_bind_set(struct devlink_port *devlink_port,
1520 unsigned int sb_index, u16 tc_index,
1521 enum devlink_sb_pool_type pool_type,
f2ad1a52
IS		 1522 u16 pool_index, u32 threshold,
1523 struct netlink_ext_ack *extack)
bf797471
JP		 1524
1525{
1526 const struct devlink_ops *ops = devlink_port->devlink->ops;
1527
be6fe1d8 1528 if (ops->sb_tc_pool_bind_set)
bf797471
JP		 1529 return ops->sb_tc_pool_bind_set(devlink_port, sb_index,
1530 tc_index, pool_type,
f2ad1a52 1531 pool_index, threshold, extack);
bf797471
JP		 1532 return -EOPNOTSUPP;
1533}
1534
1535static int devlink_nl_cmd_sb_tc_pool_bind_set_doit(struct sk_buff *skb,
1536 struct genl_info *info)
1537{
1538 struct devlink_port *devlink_port = info->user_ptr[0];
1539 struct devlink_sb *devlink_sb = info->user_ptr[1];
1540 enum devlink_sb_pool_type pool_type;
1541 u16 tc_index;
1542 u16 pool_index;
1543 u32 threshold;
1544 int err;
1545
1546 err = devlink_sb_pool_type_get_from_info(info, &pool_type);
1547 if (err)
1548 return err;
1549
1550 err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
1551 pool_type, &tc_index);
1552 if (err)
1553 return err;
1554
1555 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1556 &pool_index);
1557 if (err)
1558 return err;
1559
1560 if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD])
1561 return -EINVAL;
1562
1563 threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
1564 return devlink_sb_tc_pool_bind_set(devlink_port, devlink_sb->index,
1565 tc_index, pool_type,
f2ad1a52 1566 pool_index, threshold, info->extack);
bf797471
JP		 1567}
1568
df38dafd
JP		 1569static int devlink_nl_cmd_sb_occ_snapshot_doit(struct sk_buff *skb,
1570 struct genl_info *info)
1571{
1572 struct devlink *devlink = info->user_ptr[0];
1573 struct devlink_sb *devlink_sb = info->user_ptr[1];
1574 const struct devlink_ops *ops = devlink->ops;
1575
be6fe1d8 1576 if (ops->sb_occ_snapshot)
df38dafd
JP		 1577 return ops->sb_occ_snapshot(devlink, devlink_sb->index);
1578 return -EOPNOTSUPP;
1579}
1580
1581static int devlink_nl_cmd_sb_occ_max_clear_doit(struct sk_buff *skb,
1582 struct genl_info *info)
1583{
1584 struct devlink *devlink = info->user_ptr[0];
1585 struct devlink_sb *devlink_sb = info->user_ptr[1];
1586 const struct devlink_ops *ops = devlink->ops;
1587
be6fe1d8 1588 if (ops->sb_occ_max_clear)
df38dafd
JP		 1589 return ops->sb_occ_max_clear(devlink, devlink_sb->index);
1590 return -EOPNOTSUPP;
1591}
1592
21e3d2dd
JP		 1593static int devlink_nl_eswitch_fill(struct sk_buff *msg, struct devlink *devlink,
1594 enum devlink_command cmd, u32 portid,
1595 u32 seq, int flags)
08f4b591 1596{
59bfde01 1597 const struct devlink_ops *ops = devlink->ops;
98fdbea5
LR		 1598 enum devlink_eswitch_encap_mode encap_mode;
1599 u8 inline_mode;
08f4b591 1600 void *hdr;
59bfde01
RD		 1601 int err = 0;
1602 u16 mode;
08f4b591
OG		 1603
1604 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1605 if (!hdr)
1606 return -EMSGSIZE;
1607
59bfde01
RD		 1608 err = devlink_nl_put_handle(msg, devlink);
1609 if (err)
1a6aa36b 1610 goto nla_put_failure;
08f4b591 1611
4456f61c
JP		 1612 if (ops->eswitch_mode_get) {
1613 err = ops->eswitch_mode_get(devlink, &mode);
1614 if (err)
1615 goto nla_put_failure;
1616 err = nla_put_u16(msg, DEVLINK_ATTR_ESWITCH_MODE, mode);
1617 if (err)
1618 goto nla_put_failure;
1619 }
59bfde01
RD		 1620
1621 if (ops->eswitch_inline_mode_get) {
1622 err = ops->eswitch_inline_mode_get(devlink, &inline_mode);
1623 if (err)
1a6aa36b 1624 goto nla_put_failure;
59bfde01
RD		 1625 err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_INLINE_MODE,
1626 inline_mode);
1627 if (err)
1a6aa36b 1628 goto nla_put_failure;
59bfde01 1629 }
08f4b591 1630
f43e9b06
RD		 1631 if (ops->eswitch_encap_mode_get) {
1632 err = ops->eswitch_encap_mode_get(devlink, &encap_mode);
1633 if (err)
1634 goto nla_put_failure;
1635 err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_ENCAP_MODE, encap_mode);
1636 if (err)
1637 goto nla_put_failure;
1638 }
1639
08f4b591
OG		 1640 genlmsg_end(msg, hdr);
1641 return 0;
1642
1a6aa36b 1643nla_put_failure:
08f4b591 1644 genlmsg_cancel(msg, hdr);
59bfde01 1645 return err;
08f4b591
OG		 1646}
1647
adf200f3
JP		 1648static int devlink_nl_cmd_eswitch_get_doit(struct sk_buff *skb,
1649 struct genl_info *info)
08f4b591
OG		 1650{
1651 struct devlink *devlink = info->user_ptr[0];
08f4b591 1652 struct sk_buff *msg;
08f4b591
OG		 1653 int err;
1654
08f4b591
OG		 1655 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1656 if (!msg)
1657 return -ENOMEM;
1658
21e3d2dd
JP		 1659 err = devlink_nl_eswitch_fill(msg, devlink, DEVLINK_CMD_ESWITCH_GET,
1660 info->snd_portid, info->snd_seq, 0);
08f4b591
OG		 1661
1662 if (err) {
1663 nlmsg_free(msg);
1664 return err;
1665 }
1666
1667 return genlmsg_reply(msg, info);
1668}
1669
adf200f3
JP		 1670static int devlink_nl_cmd_eswitch_set_doit(struct sk_buff *skb,
1671 struct genl_info *info)
08f4b591
OG		 1672{
1673 struct devlink *devlink = info->user_ptr[0];
1674 const struct devlink_ops *ops = devlink->ops;
98fdbea5
LR		 1675 enum devlink_eswitch_encap_mode encap_mode;
1676 u8 inline_mode;
59bfde01 1677 int err = 0;
f43e9b06 1678 u16 mode;
08f4b591 1679
59bfde01
RD		 1680 if (info->attrs[DEVLINK_ATTR_ESWITCH_MODE]) {
1681 if (!ops->eswitch_mode_set)
1682 return -EOPNOTSUPP;
1683 mode = nla_get_u16(info->attrs[DEVLINK_ATTR_ESWITCH_MODE]);
db7ff19e 1684 err = ops->eswitch_mode_set(devlink, mode, info->extack);
59bfde01
RD		 1685 if (err)
1686 return err;
1687 }
08f4b591 1688
59bfde01
RD		 1689 if (info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]) {
1690 if (!ops->eswitch_inline_mode_set)
1691 return -EOPNOTSUPP;
1692 inline_mode = nla_get_u8(
1693 info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]);
db7ff19e
EB		 1694 err = ops->eswitch_inline_mode_set(devlink, inline_mode,
1695 info->extack);
59bfde01
RD		 1696 if (err)
1697 return err;
1698 }
f43e9b06
RD		 1699
1700 if (info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]) {
1701 if (!ops->eswitch_encap_mode_set)
1702 return -EOPNOTSUPP;
1703 encap_mode = nla_get_u8(info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]);
db7ff19e
EB		 1704 err = ops->eswitch_encap_mode_set(devlink, encap_mode,
1705 info->extack);
f43e9b06
RD		 1706 if (err)
1707 return err;
1708 }
1709
1555d204
AS		 1710 return 0;
1711}
1712
1713int devlink_dpipe_match_put(struct sk_buff *skb,
1714 struct devlink_dpipe_match *match)
1715{
1716 struct devlink_dpipe_header *header = match->header;
1717 struct devlink_dpipe_field *field = &header->fields[match->field_id];
1718 struct nlattr *match_attr;
1719
ae0be8de 1720 match_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_MATCH);
1555d204
AS		 1721 if (!match_attr)
1722 return -EMSGSIZE;
1723
1724 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_MATCH_TYPE, match->type) ||
1725 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, match->header_index) ||
1726 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
1727 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
1728 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
1729 goto nla_put_failure;
1730
1731 nla_nest_end(skb, match_attr);
1732 return 0;
1733
1734nla_put_failure:
1735 nla_nest_cancel(skb, match_attr);
1736 return -EMSGSIZE;
1737}
1738EXPORT_SYMBOL_GPL(devlink_dpipe_match_put);
1739
1740static int devlink_dpipe_matches_put(struct devlink_dpipe_table *table,
1741 struct sk_buff *skb)
1742{
1743 struct nlattr *matches_attr;
1744
ae0be8de
MK		 1745 matches_attr = nla_nest_start_noflag(skb,
1746 DEVLINK_ATTR_DPIPE_TABLE_MATCHES);
1555d204
AS		 1747 if (!matches_attr)
1748 return -EMSGSIZE;
1749
1750 if (table->table_ops->matches_dump(table->priv, skb))
1751 goto nla_put_failure;
1752
1753 nla_nest_end(skb, matches_attr);
1754 return 0;
1755
1756nla_put_failure:
1757 nla_nest_cancel(skb, matches_attr);
1758 return -EMSGSIZE;
1759}
1760
1761int devlink_dpipe_action_put(struct sk_buff *skb,
1762 struct devlink_dpipe_action *action)
1763{
1764 struct devlink_dpipe_header *header = action->header;
1765 struct devlink_dpipe_field *field = &header->fields[action->field_id];
1766 struct nlattr *action_attr;
1767
ae0be8de 1768 action_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ACTION);
1555d204
AS		 1769 if (!action_attr)
1770 return -EMSGSIZE;
1771
1772 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_ACTION_TYPE, action->type) ||
1773 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, action->header_index) ||
1774 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
1775 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
1776 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
1777 goto nla_put_failure;
1778
1779 nla_nest_end(skb, action_attr);
1780 return 0;
1781
1782nla_put_failure:
1783 nla_nest_cancel(skb, action_attr);
1784 return -EMSGSIZE;
1785}
1786EXPORT_SYMBOL_GPL(devlink_dpipe_action_put);
1787
1788static int devlink_dpipe_actions_put(struct devlink_dpipe_table *table,
1789 struct sk_buff *skb)
1790{
1791 struct nlattr *actions_attr;
1792
ae0be8de
MK		 1793 actions_attr = nla_nest_start_noflag(skb,
1794 DEVLINK_ATTR_DPIPE_TABLE_ACTIONS);
1555d204
AS		 1795 if (!actions_attr)
1796 return -EMSGSIZE;
1797
1798 if (table->table_ops->actions_dump(table->priv, skb))
1799 goto nla_put_failure;
1800
1801 nla_nest_end(skb, actions_attr);
1802 return 0;
1803
1804nla_put_failure:
1805 nla_nest_cancel(skb, actions_attr);
1806 return -EMSGSIZE;
1807}
1808
1809static int devlink_dpipe_table_put(struct sk_buff *skb,
1810 struct devlink_dpipe_table *table)
1811{
1812 struct nlattr *table_attr;
ffd3cdcc 1813 u64 table_size;
1555d204 1814
ffd3cdcc 1815 table_size = table->table_ops->size_get(table->priv);
ae0be8de 1816 table_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLE);
1555d204
AS		 1817 if (!table_attr)
1818 return -EMSGSIZE;
1819
1820 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_TABLE_NAME, table->name) ||
ffd3cdcc 1821 nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_SIZE, table_size,
1555d204
AS		 1822 DEVLINK_ATTR_PAD))
1823 goto nla_put_failure;
1824 if (nla_put_u8(skb, DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED,
1825 table->counters_enabled))
1826 goto nla_put_failure;
1827
56dc7cd0 1828 if (table->resource_valid) {
3d18e4f1
AS		 1829 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_ID,
1830 table->resource_id, DEVLINK_ATTR_PAD) ||
1831 nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_UNITS,
1832 table->resource_units, DEVLINK_ATTR_PAD))
1833 goto nla_put_failure;
56dc7cd0 1834 }
1555d204
AS		 1835 if (devlink_dpipe_matches_put(table, skb))
1836 goto nla_put_failure;
1837
1838 if (devlink_dpipe_actions_put(table, skb))
1839 goto nla_put_failure;
1840
1841 nla_nest_end(skb, table_attr);
1842 return 0;
1843
1844nla_put_failure:
1845 nla_nest_cancel(skb, table_attr);
1846 return -EMSGSIZE;
1847}
1848
1849static int devlink_dpipe_send_and_alloc_skb(struct sk_buff **pskb,
1850 struct genl_info *info)
1851{
1852 int err;
1853
1854 if (*pskb) {
1855 err = genlmsg_reply(*pskb, info);
1856 if (err)
1857 return err;
1858 }
1859 *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
1860 if (!*pskb)
1861 return -ENOMEM;
1862 return 0;
1863}
1864
1865static int devlink_dpipe_tables_fill(struct genl_info *info,
1866 enum devlink_command cmd, int flags,
1867 struct list_head *dpipe_tables,
1868 const char *table_name)
1869{
1870 struct devlink *devlink = info->user_ptr[0];
1871 struct devlink_dpipe_table *table;
1872 struct nlattr *tables_attr;
1873 struct sk_buff *skb = NULL;
1874 struct nlmsghdr *nlh;
1875 bool incomplete;
1876 void *hdr;
1877 int i;
1878 int err;
1879
1880 table = list_first_entry(dpipe_tables,
1881 struct devlink_dpipe_table, list);
1882start_again:
1883 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
1884 if (err)
1885 return err;
1886
1887 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
1888 &devlink_nl_family, NLM_F_MULTI, cmd);
6044bd4a
HY		 1889 if (!hdr) {
1890 nlmsg_free(skb);
1555d204 1891 return -EMSGSIZE;
6044bd4a 1892 }
1555d204
AS		 1893
1894 if (devlink_nl_put_handle(skb, devlink))
1895 goto nla_put_failure;
ae0be8de 1896 tables_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLES);
1555d204
AS		 1897 if (!tables_attr)
1898 goto nla_put_failure;
1899
1900 i = 0;
1901 incomplete = false;
1902 list_for_each_entry_from(table, dpipe_tables, list) {
1903 if (!table_name) {
1904 err = devlink_dpipe_table_put(skb, table);
1905 if (err) {
1906 if (!i)
1907 goto err_table_put;
1908 incomplete = true;
1909 break;
1910 }
1911 } else {
1912 if (!strcmp(table->name, table_name)) {
1913 err = devlink_dpipe_table_put(skb, table);
1914 if (err)
1915 break;
1916 }
1917 }
1918 i++;
1919 }
1920
1921 nla_nest_end(skb, tables_attr);
1922 genlmsg_end(skb, hdr);
1923 if (incomplete)
1924 goto start_again;
1925
1926send_done:
1927 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
1928 NLMSG_DONE, 0, flags | NLM_F_MULTI);
1929 if (!nlh) {
1930 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
1931 if (err)
7fe4d6dc 1932 return err;
1555d204
AS		 1933 goto send_done;
1934 }
1935
1936 return genlmsg_reply(skb, info);
1937
1938nla_put_failure:
1939 err = -EMSGSIZE;
1940err_table_put:
1555d204
AS		 1941 nlmsg_free(skb);
1942 return err;
1943}
1944
1945static int devlink_nl_cmd_dpipe_table_get(struct sk_buff *skb,
1946 struct genl_info *info)
1947{
1948 struct devlink *devlink = info->user_ptr[0];
1949 const char *table_name = NULL;
1950
1951 if (info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
1952 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
1953
1954 return devlink_dpipe_tables_fill(info, DEVLINK_CMD_DPIPE_TABLE_GET, 0,
1955 &devlink->dpipe_table_list,
1956 table_name);
1957}
1958
1959static int devlink_dpipe_value_put(struct sk_buff *skb,
1960 struct devlink_dpipe_value *value)
1961{
1962 if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE,
1963 value->value_size, value->value))
1964 return -EMSGSIZE;
1965 if (value->mask)
1966 if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE_MASK,
1967 value->value_size, value->mask))
1968 return -EMSGSIZE;
1969 if (value->mapping_valid)
1970 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_VALUE_MAPPING,
1971 value->mapping_value))
1972 return -EMSGSIZE;
1973 return 0;
1974}
1975
1976static int devlink_dpipe_action_value_put(struct sk_buff *skb,
1977 struct devlink_dpipe_value *value)
1978{
1979 if (!value->action)
1980 return -EINVAL;
1981 if (devlink_dpipe_action_put(skb, value->action))
1982 return -EMSGSIZE;
1983 if (devlink_dpipe_value_put(skb, value))
1984 return -EMSGSIZE;
1985 return 0;
1986}
1987
1988static int devlink_dpipe_action_values_put(struct sk_buff *skb,
1989 struct devlink_dpipe_value *values,
1990 unsigned int values_count)
1991{
1992 struct nlattr *action_attr;
1993 int i;
1994 int err;
1995
1996 for (i = 0; i < values_count; i++) {
ae0be8de
MK		 1997 action_attr = nla_nest_start_noflag(skb,
1998 DEVLINK_ATTR_DPIPE_ACTION_VALUE);
1555d204
AS		 1999 if (!action_attr)
2000 return -EMSGSIZE;
2001 err = devlink_dpipe_action_value_put(skb, &values[i]);
2002 if (err)
2003 goto err_action_value_put;
2004 nla_nest_end(skb, action_attr);
2005 }
2006 return 0;
2007
2008err_action_value_put:
2009 nla_nest_cancel(skb, action_attr);
2010 return err;
2011}
2012
2013static int devlink_dpipe_match_value_put(struct sk_buff *skb,
2014 struct devlink_dpipe_value *value)
2015{
2016 if (!value->match)
2017 return -EINVAL;
2018 if (devlink_dpipe_match_put(skb, value->match))
2019 return -EMSGSIZE;
2020 if (devlink_dpipe_value_put(skb, value))
2021 return -EMSGSIZE;
2022 return 0;
2023}
2024
2025static int devlink_dpipe_match_values_put(struct sk_buff *skb,
2026 struct devlink_dpipe_value *values,
2027 unsigned int values_count)
2028{
2029 struct nlattr *match_attr;
2030 int i;
2031 int err;
2032
2033 for (i = 0; i < values_count; i++) {
ae0be8de
MK		 2034 match_attr = nla_nest_start_noflag(skb,
2035 DEVLINK_ATTR_DPIPE_MATCH_VALUE);
1555d204
AS		 2036 if (!match_attr)
2037 return -EMSGSIZE;
2038 err = devlink_dpipe_match_value_put(skb, &values[i]);
2039 if (err)
2040 goto err_match_value_put;
2041 nla_nest_end(skb, match_attr);
2042 }
2043 return 0;
2044
2045err_match_value_put:
2046 nla_nest_cancel(skb, match_attr);
2047 return err;
2048}
2049
2050static int devlink_dpipe_entry_put(struct sk_buff *skb,
2051 struct devlink_dpipe_entry *entry)
2052{
2053 struct nlattr *entry_attr, *matches_attr, *actions_attr;
2054 int err;
2055
ae0be8de 2056 entry_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ENTRY);
1555d204
AS		 2057 if (!entry_attr)
2058 return -EMSGSIZE;
2059
2060 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_INDEX, entry->index,
2061 DEVLINK_ATTR_PAD))
2062 goto nla_put_failure;
2063 if (entry->counter_valid)
2064 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_COUNTER,
2065 entry->counter, DEVLINK_ATTR_PAD))
2066 goto nla_put_failure;
2067
ae0be8de
MK		 2068 matches_attr = nla_nest_start_noflag(skb,
2069 DEVLINK_ATTR_DPIPE_ENTRY_MATCH_VALUES);
1555d204
AS		 2070 if (!matches_attr)
2071 goto nla_put_failure;
2072
2073 err = devlink_dpipe_match_values_put(skb, entry->match_values,
2074 entry->match_values_count);
2075 if (err) {
2076 nla_nest_cancel(skb, matches_attr);
2077 goto err_match_values_put;
2078 }
2079 nla_nest_end(skb, matches_attr);
2080
ae0be8de
MK		 2081 actions_attr = nla_nest_start_noflag(skb,
2082 DEVLINK_ATTR_DPIPE_ENTRY_ACTION_VALUES);
1555d204
AS		 2083 if (!actions_attr)
2084 goto nla_put_failure;
2085
2086 err = devlink_dpipe_action_values_put(skb, entry->action_values,
2087 entry->action_values_count);
2088 if (err) {
2089 nla_nest_cancel(skb, actions_attr);
2090 goto err_action_values_put;
2091 }
2092 nla_nest_end(skb, actions_attr);
59bfde01 2093
1555d204 2094 nla_nest_end(skb, entry_attr);
59bfde01 2095 return 0;
1555d204
AS		 2096
2097nla_put_failure:
2098 err = -EMSGSIZE;
2099err_match_values_put:
2100err_action_values_put:
2101 nla_nest_cancel(skb, entry_attr);
2102 return err;
2103}
2104
2105static struct devlink_dpipe_table *
2106devlink_dpipe_table_find(struct list_head *dpipe_tables,
2eb51c75 2107 const char *table_name, struct devlink *devlink)
1555d204
AS		 2108{
2109 struct devlink_dpipe_table *table;
2eb51c75
MB		 2110 list_for_each_entry_rcu(table, dpipe_tables, list,
2111 lockdep_is_held(&devlink->lock)) {
1555d204
AS		 2112 if (!strcmp(table->name, table_name))
2113 return table;
2114 }
2115 return NULL;
2116}
2117
2118int devlink_dpipe_entry_ctx_prepare(struct devlink_dpipe_dump_ctx *dump_ctx)
2119{
2120 struct devlink *devlink;
2121 int err;
2122
2123 err = devlink_dpipe_send_and_alloc_skb(&dump_ctx->skb,
2124 dump_ctx->info);
2125 if (err)
2126 return err;
2127
2128 dump_ctx->hdr = genlmsg_put(dump_ctx->skb,
2129 dump_ctx->info->snd_portid,
2130 dump_ctx->info->snd_seq,
2131 &devlink_nl_family, NLM_F_MULTI,
2132 dump_ctx->cmd);
2133 if (!dump_ctx->hdr)
2134 goto nla_put_failure;
2135
2136 devlink = dump_ctx->info->user_ptr[0];
2137 if (devlink_nl_put_handle(dump_ctx->skb, devlink))
2138 goto nla_put_failure;
ae0be8de
MK		 2139 dump_ctx->nest = nla_nest_start_noflag(dump_ctx->skb,
2140 DEVLINK_ATTR_DPIPE_ENTRIES);
1555d204
AS		 2141 if (!dump_ctx->nest)
2142 goto nla_put_failure;
2143 return 0;
2144
2145nla_put_failure:
1555d204
AS		 2146 nlmsg_free(dump_ctx->skb);
2147 return -EMSGSIZE;
2148}
2149EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_prepare);
2150
2151int devlink_dpipe_entry_ctx_append(struct devlink_dpipe_dump_ctx *dump_ctx,
2152 struct devlink_dpipe_entry *entry)
2153{
2154 return devlink_dpipe_entry_put(dump_ctx->skb, entry);
2155}
2156EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_append);
2157
2158int devlink_dpipe_entry_ctx_close(struct devlink_dpipe_dump_ctx *dump_ctx)
2159{
2160 nla_nest_end(dump_ctx->skb, dump_ctx->nest);
2161 genlmsg_end(dump_ctx->skb, dump_ctx->hdr);
2162 return 0;
2163}
2164EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_close);
2165
35807324
AS		 2166void devlink_dpipe_entry_clear(struct devlink_dpipe_entry *entry)
2167
2168{
2169 unsigned int value_count, value_index;
2170 struct devlink_dpipe_value *value;
2171
2172 value = entry->action_values;
2173 value_count = entry->action_values_count;
2174 for (value_index = 0; value_index < value_count; value_index++) {
2175 kfree(value[value_index].value);
2176 kfree(value[value_index].mask);
2177 }
2178
2179 value = entry->match_values;
2180 value_count = entry->match_values_count;
2181 for (value_index = 0; value_index < value_count; value_index++) {
2182 kfree(value[value_index].value);
2183 kfree(value[value_index].mask);
2184 }
2185}
2186EXPORT_SYMBOL(devlink_dpipe_entry_clear);
2187
1555d204
AS		 2188static int devlink_dpipe_entries_fill(struct genl_info *info,
2189 enum devlink_command cmd, int flags,
2190 struct devlink_dpipe_table *table)
2191{
2192 struct devlink_dpipe_dump_ctx dump_ctx;
2193 struct nlmsghdr *nlh;
2194 int err;
2195
2196 dump_ctx.skb = NULL;
2197 dump_ctx.cmd = cmd;
2198 dump_ctx.info = info;
2199
2200 err = table->table_ops->entries_dump(table->priv,
2201 table->counters_enabled,
2202 &dump_ctx);
2203 if (err)
7fe4d6dc 2204 return err;
1555d204
AS		 2205
2206send_done:
2207 nlh = nlmsg_put(dump_ctx.skb, info->snd_portid, info->snd_seq,
2208 NLMSG_DONE, 0, flags | NLM_F_MULTI);
2209 if (!nlh) {
2210 err = devlink_dpipe_send_and_alloc_skb(&dump_ctx.skb, info);
2211 if (err)
7fe4d6dc 2212 return err;
1555d204
AS		 2213 goto send_done;
2214 }
2215 return genlmsg_reply(dump_ctx.skb, info);
1555d204
AS		 2216}
2217
2218static int devlink_nl_cmd_dpipe_entries_get(struct sk_buff *skb,
2219 struct genl_info *info)
2220{
2221 struct devlink *devlink = info->user_ptr[0];
2222 struct devlink_dpipe_table *table;
2223 const char *table_name;
2224
2225 if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
2226 return -EINVAL;
2227
2228 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
2229 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2eb51c75 2230 table_name, devlink);
1555d204
AS		 2231 if (!table)
2232 return -EINVAL;
2233
2234 if (!table->table_ops->entries_dump)
2235 return -EINVAL;
2236
2237 return devlink_dpipe_entries_fill(info, DEVLINK_CMD_DPIPE_ENTRIES_GET,
2238 0, table);
2239}
2240
2241static int devlink_dpipe_fields_put(struct sk_buff *skb,
2242 const struct devlink_dpipe_header *header)
2243{
2244 struct devlink_dpipe_field *field;
2245 struct nlattr *field_attr;
2246 int i;
2247
2248 for (i = 0; i < header->fields_count; i++) {
2249 field = &header->fields[i];
ae0be8de
MK		 2250 field_attr = nla_nest_start_noflag(skb,
2251 DEVLINK_ATTR_DPIPE_FIELD);
1555d204
AS		 2252 if (!field_attr)
2253 return -EMSGSIZE;
2254 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_FIELD_NAME, field->name) ||
2255 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
2256 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_BITWIDTH, field->bitwidth) ||
2257 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_MAPPING_TYPE, field->mapping_type))
2258 goto nla_put_failure;
2259 nla_nest_end(skb, field_attr);
2260 }
2261 return 0;
2262
2263nla_put_failure:
2264 nla_nest_cancel(skb, field_attr);
2265 return -EMSGSIZE;
2266}
2267
2268static int devlink_dpipe_header_put(struct sk_buff *skb,
2269 struct devlink_dpipe_header *header)
2270{
2271 struct nlattr *fields_attr, *header_attr;
2272 int err;
2273
ae0be8de 2274 header_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADER);
cb6bf9cf 2275 if (!header_attr)
1555d204
AS		 2276 return -EMSGSIZE;
2277
2278 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_HEADER_NAME, header->name) ||
2279 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
2280 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
2281 goto nla_put_failure;
2282
ae0be8de
MK		 2283 fields_attr = nla_nest_start_noflag(skb,
2284 DEVLINK_ATTR_DPIPE_HEADER_FIELDS);
1555d204
AS		 2285 if (!fields_attr)
2286 goto nla_put_failure;
2287
2288 err = devlink_dpipe_fields_put(skb, header);
2289 if (err) {
2290 nla_nest_cancel(skb, fields_attr);
2291 goto nla_put_failure;
2292 }
2293 nla_nest_end(skb, fields_attr);
2294 nla_nest_end(skb, header_attr);
2295 return 0;
2296
2297nla_put_failure:
2298 err = -EMSGSIZE;
2299 nla_nest_cancel(skb, header_attr);
2300 return err;
2301}
2302
2303static int devlink_dpipe_headers_fill(struct genl_info *info,
2304 enum devlink_command cmd, int flags,
2305 struct devlink_dpipe_headers *
2306 dpipe_headers)
2307{
2308 struct devlink *devlink = info->user_ptr[0];
2309 struct nlattr *headers_attr;
2310 struct sk_buff *skb = NULL;
2311 struct nlmsghdr *nlh;
2312 void *hdr;
2313 int i, j;
2314 int err;
2315
2316 i = 0;
2317start_again:
2318 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2319 if (err)
2320 return err;
2321
2322 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
2323 &devlink_nl_family, NLM_F_MULTI, cmd);
6044bd4a
HY		 2324 if (!hdr) {
2325 nlmsg_free(skb);
1555d204 2326 return -EMSGSIZE;
6044bd4a 2327 }
1555d204
AS		 2328
2329 if (devlink_nl_put_handle(skb, devlink))
2330 goto nla_put_failure;
ae0be8de 2331 headers_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADERS);
1555d204
AS		 2332 if (!headers_attr)
2333 goto nla_put_failure;
2334
2335 j = 0;
2336 for (; i < dpipe_headers->headers_count; i++) {
2337 err = devlink_dpipe_header_put(skb, dpipe_headers->headers[i]);
2338 if (err) {
2339 if (!j)
2340 goto err_table_put;
2341 break;
2342 }
2343 j++;
2344 }
2345 nla_nest_end(skb, headers_attr);
2346 genlmsg_end(skb, hdr);
2347 if (i != dpipe_headers->headers_count)
2348 goto start_again;
2349
2350send_done:
2351 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
2352 NLMSG_DONE, 0, flags | NLM_F_MULTI);
2353 if (!nlh) {
2354 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2355 if (err)
7fe4d6dc 2356 return err;
1555d204
AS		 2357 goto send_done;
2358 }
2359 return genlmsg_reply(skb, info);
2360
2361nla_put_failure:
2362 err = -EMSGSIZE;
2363err_table_put:
1555d204
AS		 2364 nlmsg_free(skb);
2365 return err;
2366}
2367
2368static int devlink_nl_cmd_dpipe_headers_get(struct sk_buff *skb,
2369 struct genl_info *info)
2370{
2371 struct devlink *devlink = info->user_ptr[0];
2372
2373 if (!devlink->dpipe_headers)
2374 return -EOPNOTSUPP;
2375 return devlink_dpipe_headers_fill(info, DEVLINK_CMD_DPIPE_HEADERS_GET,
2376 0, devlink->dpipe_headers);
2377}
2378
2379static int devlink_dpipe_table_counters_set(struct devlink *devlink,
2380 const char *table_name,
2381 bool enable)
2382{
2383 struct devlink_dpipe_table *table;
2384
2385 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2eb51c75 2386 table_name, devlink);
1555d204
AS		 2387 if (!table)
2388 return -EINVAL;
2389
2390 if (table->counter_control_extern)
2391 return -EOPNOTSUPP;
2392
2393 if (!(table->counters_enabled ^ enable))
2394 return 0;
2395
2396 table->counters_enabled = enable;
2397 if (table->table_ops->counters_set_update)
2398 table->table_ops->counters_set_update(table->priv, enable);
2399 return 0;
2400}
2401
2402static int devlink_nl_cmd_dpipe_table_counters_set(struct sk_buff *skb,
2403 struct genl_info *info)
2404{
2405 struct devlink *devlink = info->user_ptr[0];
2406 const char *table_name;
2407 bool counters_enable;
2408
2409 if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME] ||
2410 !info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED])
2411 return -EINVAL;
2412
2413 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
2414 counters_enable = !!nla_get_u8(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED]);
2415
2416 return devlink_dpipe_table_counters_set(devlink, table_name,
2417 counters_enable);
08f4b591
OG		 2418}
2419
43dd7512 2420static struct devlink_resource *
d9f9b9a4
AS		 2421devlink_resource_find(struct devlink *devlink,
2422 struct devlink_resource *resource, u64 resource_id)
2423{
2424 struct list_head *resource_list;
2425
2426 if (resource)
2427 resource_list = &resource->resource_list;
2428 else
2429 resource_list = &devlink->resource_list;
2430
2431 list_for_each_entry(resource, resource_list, list) {
2432 struct devlink_resource *child_resource;
2433
2434 if (resource->id == resource_id)
2435 return resource;
2436
2437 child_resource = devlink_resource_find(devlink, resource,
2438 resource_id);
2439 if (child_resource)
2440 return child_resource;
2441 }
2442 return NULL;
2443}
2444
43dd7512
WY		 2445static void
2446devlink_resource_validate_children(struct devlink_resource *resource)
d9f9b9a4
AS		 2447{
2448 struct devlink_resource *child_resource;
2449 bool size_valid = true;
2450 u64 parts_size = 0;
2451
2452 if (list_empty(&resource->resource_list))
2453 goto out;
2454
2455 list_for_each_entry(child_resource, &resource->resource_list, list)
2456 parts_size += child_resource->size_new;
2457
b9d17175 2458 if (parts_size > resource->size_new)
d9f9b9a4
AS		 2459 size_valid = false;
2460out:
2461 resource->size_valid = size_valid;
2462}
2463
cc944ead
AS		 2464static int
2465devlink_resource_validate_size(struct devlink_resource *resource, u64 size,
2466 struct netlink_ext_ack *extack)
2467{
2468 u64 reminder;
2469 int err = 0;
2470
0f3e9c97 2471 if (size > resource->size_params.size_max) {
cc944ead
AS		 2472 NL_SET_ERR_MSG_MOD(extack, "Size larger than maximum");
2473 err = -EINVAL;
2474 }
2475
0f3e9c97 2476 if (size < resource->size_params.size_min) {
cc944ead
AS		 2477 NL_SET_ERR_MSG_MOD(extack, "Size smaller than minimum");
2478 err = -EINVAL;
2479 }
2480
0f3e9c97 2481 div64_u64_rem(size, resource->size_params.size_granularity, &reminder);
cc944ead
AS		 2482 if (reminder) {
2483 NL_SET_ERR_MSG_MOD(extack, "Wrong granularity");
2484 err = -EINVAL;
2485 }
2486
2487 return err;
2488}
2489
d9f9b9a4
AS		 2490static int devlink_nl_cmd_resource_set(struct sk_buff *skb,
2491 struct genl_info *info)
2492{
2493 struct devlink *devlink = info->user_ptr[0];
2494 struct devlink_resource *resource;
2495 u64 resource_id;
2496 u64 size;
2497 int err;
2498
2499 if (!info->attrs[DEVLINK_ATTR_RESOURCE_ID] ||
2500 !info->attrs[DEVLINK_ATTR_RESOURCE_SIZE])
2501 return -EINVAL;
2502 resource_id = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_ID]);
2503
2504 resource = devlink_resource_find(devlink, NULL, resource_id);
2505 if (!resource)
2506 return -EINVAL;
2507
d9f9b9a4 2508 size = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_SIZE]);
cc944ead 2509 err = devlink_resource_validate_size(resource, size, info->extack);
d9f9b9a4
AS		 2510 if (err)
2511 return err;
2512
2513 resource->size_new = size;
2514 devlink_resource_validate_children(resource);
2515 if (resource->parent)
2516 devlink_resource_validate_children(resource->parent);
2517 return 0;
2518}
2519
3d18e4f1 2520static int
d9f9b9a4
AS		 2521devlink_resource_size_params_put(struct devlink_resource *resource,
2522 struct sk_buff *skb)
2523{
2524 struct devlink_resource_size_params *size_params;
2525
77d27096 2526 size_params = &resource->size_params;
3d18e4f1
AS		 2527 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_GRAN,
2528 size_params->size_granularity, DEVLINK_ATTR_PAD) ||
2529 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MAX,
2530 size_params->size_max, DEVLINK_ATTR_PAD) ||
2531 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MIN,
2532 size_params->size_min, DEVLINK_ATTR_PAD) ||
2533 nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_UNIT, size_params->unit))
2534 return -EMSGSIZE;
2535 return 0;
d9f9b9a4
AS		 2536}
2537
fc56be47
JP		 2538static int devlink_resource_occ_put(struct devlink_resource *resource,
2539 struct sk_buff *skb)
2540{
2541 if (!resource->occ_get)
2542 return 0;
2543 return nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_OCC,
2544 resource->occ_get(resource->occ_get_priv),
2545 DEVLINK_ATTR_PAD);
2546}
2547
d9f9b9a4
AS		 2548static int devlink_resource_put(struct devlink *devlink, struct sk_buff *skb,
2549 struct devlink_resource *resource)
2550{
2551 struct devlink_resource *child_resource;
2552 struct nlattr *child_resource_attr;
2553 struct nlattr *resource_attr;
2554
ae0be8de 2555 resource_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_RESOURCE);
d9f9b9a4
AS		 2556 if (!resource_attr)
2557 return -EMSGSIZE;
2558
2559 if (nla_put_string(skb, DEVLINK_ATTR_RESOURCE_NAME, resource->name) ||
2560 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE, resource->size,
2561 DEVLINK_ATTR_PAD) ||
2562 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_ID, resource->id,
2563 DEVLINK_ATTR_PAD))
2564 goto nla_put_failure;
2565 if (resource->size != resource->size_new)
2566 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_NEW,
2567 resource->size_new, DEVLINK_ATTR_PAD);
fc56be47
JP		 2568 if (devlink_resource_occ_put(resource, skb))
2569 goto nla_put_failure;
3d18e4f1
AS		 2570 if (devlink_resource_size_params_put(resource, skb))
2571 goto nla_put_failure;
d9f9b9a4
AS		 2572 if (list_empty(&resource->resource_list))
2573 goto out;
2574
2575 if (nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_SIZE_VALID,
2576 resource->size_valid))
2577 goto nla_put_failure;
2578
ae0be8de
MK		 2579 child_resource_attr = nla_nest_start_noflag(skb,
2580 DEVLINK_ATTR_RESOURCE_LIST);
d9f9b9a4
AS		 2581 if (!child_resource_attr)
2582 goto nla_put_failure;
2583
2584 list_for_each_entry(child_resource, &resource->resource_list, list) {
2585 if (devlink_resource_put(devlink, skb, child_resource))
2586 goto resource_put_failure;
2587 }
2588
2589 nla_nest_end(skb, child_resource_attr);
2590out:
2591 nla_nest_end(skb, resource_attr);
2592 return 0;
2593
2594resource_put_failure:
2595 nla_nest_cancel(skb, child_resource_attr);
2596nla_put_failure:
2597 nla_nest_cancel(skb, resource_attr);
2598 return -EMSGSIZE;
2599}
2600
2601static int devlink_resource_fill(struct genl_info *info,
2602 enum devlink_command cmd, int flags)
2603{
2604 struct devlink *devlink = info->user_ptr[0];
2605 struct devlink_resource *resource;
2606 struct nlattr *resources_attr;
2607 struct sk_buff *skb = NULL;
2608 struct nlmsghdr *nlh;
2609 bool incomplete;
2610 void *hdr;
2611 int i;
2612 int err;
2613
2614 resource = list_first_entry(&devlink->resource_list,
2615 struct devlink_resource, list);
2616start_again:
2617 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2618 if (err)
2619 return err;
2620
2621 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
2622 &devlink_nl_family, NLM_F_MULTI, cmd);
2623 if (!hdr) {
2624 nlmsg_free(skb);
2625 return -EMSGSIZE;
2626 }
2627
2628 if (devlink_nl_put_handle(skb, devlink))
2629 goto nla_put_failure;
2630
ae0be8de
MK		 2631 resources_attr = nla_nest_start_noflag(skb,
2632 DEVLINK_ATTR_RESOURCE_LIST);
d9f9b9a4
AS		 2633 if (!resources_attr)
2634 goto nla_put_failure;
2635
2636 incomplete = false;
2637 i = 0;
2638 list_for_each_entry_from(resource, &devlink->resource_list, list) {
2639 err = devlink_resource_put(devlink, skb, resource);
2640 if (err) {
2641 if (!i)
2642 goto err_resource_put;
2643 incomplete = true;
2644 break;
2645 }
2646 i++;
2647 }
2648 nla_nest_end(skb, resources_attr);
2649 genlmsg_end(skb, hdr);
2650 if (incomplete)
2651 goto start_again;
2652send_done:
2653 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
2654 NLMSG_DONE, 0, flags | NLM_F_MULTI);
2655 if (!nlh) {
2656 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2657 if (err)
83fe9a96 2658 return err;
d9f9b9a4
AS		 2659 goto send_done;
2660 }
2661 return genlmsg_reply(skb, info);
2662
2663nla_put_failure:
2664 err = -EMSGSIZE;
2665err_resource_put:
d9f9b9a4
AS		 2666 nlmsg_free(skb);
2667 return err;
2668}
2669
2670static int devlink_nl_cmd_resource_dump(struct sk_buff *skb,
2671 struct genl_info *info)
2672{
2673 struct devlink *devlink = info->user_ptr[0];
2674
2675 if (list_empty(&devlink->resource_list))
2676 return -EOPNOTSUPP;
2677
2678 return devlink_resource_fill(info, DEVLINK_CMD_RESOURCE_DUMP, 0);
2679}
2680
2d8dc5bb
AS		 2681static int
2682devlink_resources_validate(struct devlink *devlink,
2683 struct devlink_resource *resource,
2684 struct genl_info *info)
2685{
2686 struct list_head *resource_list;
2687 int err = 0;
2688
2689 if (resource)
2690 resource_list = &resource->resource_list;
2691 else
2692 resource_list = &devlink->resource_list;
2693
2694 list_for_each_entry(resource, resource_list, list) {
2695 if (!resource->size_valid)
2696 return -EINVAL;
2697 err = devlink_resources_validate(devlink, resource, info);
2698 if (err)
2699 return err;
2700 }
2701 return err;
2702}
2703
070c63f2
JP		 2704static struct net *devlink_netns_get(struct sk_buff *skb,
2705 struct genl_info *info)
2706{
2707 struct nlattr *netns_pid_attr = info->attrs[DEVLINK_ATTR_NETNS_PID];
2708 struct nlattr *netns_fd_attr = info->attrs[DEVLINK_ATTR_NETNS_FD];
2709 struct nlattr *netns_id_attr = info->attrs[DEVLINK_ATTR_NETNS_ID];
2710 struct net *net;
2711
2712 if (!!netns_pid_attr + !!netns_fd_attr + !!netns_id_attr > 1) {
2713 NL_SET_ERR_MSG(info->extack, "multiple netns identifying attributes specified");
2714 return ERR_PTR(-EINVAL);
2715 }
2716
2717 if (netns_pid_attr) {
2718 net = get_net_ns_by_pid(nla_get_u32(netns_pid_attr));
2719 } else if (netns_fd_attr) {
2720 net = get_net_ns_by_fd(nla_get_u32(netns_fd_attr));
2721 } else if (netns_id_attr) {
2722 net = get_net_ns_by_id(sock_net(skb->sk),
2723 nla_get_u32(netns_id_attr));
2724 if (!net)
2725 net = ERR_PTR(-EINVAL);
2726 } else {
2727 WARN_ON(1);
2728 net = ERR_PTR(-EINVAL);
2729 }
2730 if (IS_ERR(net)) {
2731 NL_SET_ERR_MSG(info->extack, "Unknown network namespace");
2732 return ERR_PTR(-EINVAL);
2733 }
2734 if (!netlink_ns_capable(skb, net->user_ns, CAP_NET_ADMIN)) {
2735 put_net(net);
2736 return ERR_PTR(-EPERM);
2737 }
2738 return net;
2739}
2740
2741static void devlink_param_notify(struct devlink *devlink,
2742 unsigned int port_index,
2743 struct devlink_param_item *param_item,
2744 enum devlink_command cmd);
2745
2746static void devlink_reload_netns_change(struct devlink *devlink,
2747 struct net *dest_net)
2748{
2749 struct devlink_param_item *param_item;
2750
2751 /* Userspace needs to be notified about devlink objects
2752 * removed from original and entering new network namespace.
2753 * The rest of the devlink objects are re-created during
2754 * reload process so the notifications are generated separatelly.
2755 */
2756
2757 list_for_each_entry(param_item, &devlink->param_list, list)
2758 devlink_param_notify(devlink, 0, param_item,
2759 DEVLINK_CMD_PARAM_DEL);
2760 devlink_notify(devlink, DEVLINK_CMD_DEL);
2761
8273fd84 2762 __devlink_net_set(devlink, dest_net);
070c63f2
JP		 2763
2764 devlink_notify(devlink, DEVLINK_CMD_NEW);
2765 list_for_each_entry(param_item, &devlink->param_list, list)
2766 devlink_param_notify(devlink, 0, param_item,
2767 DEVLINK_CMD_PARAM_NEW);
2768}
2769
97691069
JP		 2770static bool devlink_reload_supported(struct devlink *devlink)
2771{
2772 return devlink->ops->reload_down && devlink->ops->reload_up;
2773}
2774
2670ac26
JP		 2775static void devlink_reload_failed_set(struct devlink *devlink,
2776 bool reload_failed)
2777{
2778 if (devlink->reload_failed == reload_failed)
2779 return;
2780 devlink->reload_failed = reload_failed;
2781 devlink_notify(devlink, DEVLINK_CMD_NEW);
2782}
2783
2784bool devlink_is_reload_failed(const struct devlink *devlink)
2785{
2786 return devlink->reload_failed;
2787}
2788EXPORT_SYMBOL_GPL(devlink_is_reload_failed);
2789
070c63f2
JP		 2790static int devlink_reload(struct devlink *devlink, struct net *dest_net,
2791 struct netlink_ext_ack *extack)
2792{
2793 int err;
2794
a0c76345
JP		 2795 if (!devlink->reload_enabled)
2796 return -EOPNOTSUPP;
2797
070c63f2
JP		 2798 err = devlink->ops->reload_down(devlink, !!dest_net, extack);
2799 if (err)
2800 return err;
2801
2802 if (dest_net && !net_eq(dest_net, devlink_net(devlink)))
2803 devlink_reload_netns_change(devlink, dest_net);
2804
2805 err = devlink->ops->reload_up(devlink, extack);
2806 devlink_reload_failed_set(devlink, !!err);
2807 return err;
2808}
2809
2d8dc5bb
AS		 2810static int devlink_nl_cmd_reload(struct sk_buff *skb, struct genl_info *info)
2811{
2812 struct devlink *devlink = info->user_ptr[0];
070c63f2 2813 struct net *dest_net = NULL;
2d8dc5bb
AS		 2814 int err;
2815
5a508a25 2816 if (!devlink_reload_supported(devlink) || !devlink->reload_enabled)
2d8dc5bb
AS		 2817 return -EOPNOTSUPP;
2818
2819 err = devlink_resources_validate(devlink, NULL, info);
2820 if (err) {
2821 NL_SET_ERR_MSG_MOD(info->extack, "resources size validation failed");
2822 return err;
2823 }
070c63f2
JP		 2824
2825 if (info->attrs[DEVLINK_ATTR_NETNS_PID] ||
2826 info->attrs[DEVLINK_ATTR_NETNS_FD] ||
2827 info->attrs[DEVLINK_ATTR_NETNS_ID]) {
2828 dest_net = devlink_netns_get(skb, info);
2829 if (IS_ERR(dest_net))
2830 return PTR_ERR(dest_net);
2831 }
2832
2833 err = devlink_reload(devlink, dest_net, info->extack);
2834
2835 if (dest_net)
2836 put_net(dest_net);
2837
2670ac26 2838 return err;
2d8dc5bb
AS		 2839}
2840
191ed202
JP		 2841static int devlink_nl_flash_update_fill(struct sk_buff *msg,
2842 struct devlink *devlink,
2843 enum devlink_command cmd,
2844 const char *status_msg,
2845 const char *component,
2846 unsigned long done, unsigned long total)
2847{
2848 void *hdr;
2849
2850 hdr = genlmsg_put(msg, 0, 0, &devlink_nl_family, 0, cmd);
2851 if (!hdr)
2852 return -EMSGSIZE;
2853
2854 if (devlink_nl_put_handle(msg, devlink))
2855 goto nla_put_failure;
2856
2857 if (cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS)
2858 goto out;
2859
2860 if (status_msg &&
2861 nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_MSG,
2862 status_msg))
2863 goto nla_put_failure;
2864 if (component &&
2865 nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_COMPONENT,
2866 component))
2867 goto nla_put_failure;
2868 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_DONE,
2869 done, DEVLINK_ATTR_PAD))
2870 goto nla_put_failure;
2871 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TOTAL,
2872 total, DEVLINK_ATTR_PAD))
2873 goto nla_put_failure;
2874
2875out:
2876 genlmsg_end(msg, hdr);
2877 return 0;
2878
2879nla_put_failure:
2880 genlmsg_cancel(msg, hdr);
2881 return -EMSGSIZE;
2882}
2883
2884static void __devlink_flash_update_notify(struct devlink *devlink,
2885 enum devlink_command cmd,
2886 const char *status_msg,
2887 const char *component,
2888 unsigned long done,
2889 unsigned long total)
2890{
2891 struct sk_buff *msg;
2892 int err;
2893
2894 WARN_ON(cmd != DEVLINK_CMD_FLASH_UPDATE &&
2895 cmd != DEVLINK_CMD_FLASH_UPDATE_END &&
2896 cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS);
2897
2898 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2899 if (!msg)
2900 return;
2901
2902 err = devlink_nl_flash_update_fill(msg, devlink, cmd, status_msg,
2903 component, done, total);
2904 if (err)
2905 goto out_free_msg;
2906
2907 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
2908 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
2909 return;
2910
2911out_free_msg:
2912 nlmsg_free(msg);
2913}
2914
2915void devlink_flash_update_begin_notify(struct devlink *devlink)
2916{
2917 __devlink_flash_update_notify(devlink,
2918 DEVLINK_CMD_FLASH_UPDATE,
2919 NULL, NULL, 0, 0);
2920}
2921EXPORT_SYMBOL_GPL(devlink_flash_update_begin_notify);
2922
2923void devlink_flash_update_end_notify(struct devlink *devlink)
2924{
2925 __devlink_flash_update_notify(devlink,
2926 DEVLINK_CMD_FLASH_UPDATE_END,
2927 NULL, NULL, 0, 0);
2928}
2929EXPORT_SYMBOL_GPL(devlink_flash_update_end_notify);
2930
2931void devlink_flash_update_status_notify(struct devlink *devlink,
2932 const char *status_msg,
2933 const char *component,
2934 unsigned long done,
2935 unsigned long total)
2936{
2937 __devlink_flash_update_notify(devlink,
2938 DEVLINK_CMD_FLASH_UPDATE_STATUS,
2939 status_msg, component, done, total);
2940}
2941EXPORT_SYMBOL_GPL(devlink_flash_update_status_notify);
2942
76726ccb
JK		 2943static int devlink_nl_cmd_flash_update(struct sk_buff *skb,
2944 struct genl_info *info)
2945{
2946 struct devlink *devlink = info->user_ptr[0];
2947 const char *file_name, *component;
2948 struct nlattr *nla_component;
2949
2950 if (!devlink->ops->flash_update)
2951 return -EOPNOTSUPP;
2952
2953 if (!info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME])
2954 return -EINVAL;
2955 file_name = nla_data(info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME]);
2956
2957 nla_component = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_COMPONENT];
2958 component = nla_component ? nla_data(nla_component) : NULL;
2959
2960 return devlink->ops->flash_update(devlink, file_name, component,
2961 info->extack);
2962}
2963
036467c3
MS		 2964static const struct devlink_param devlink_param_generic[] = {
2965 {
2966 .id = DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET,
2967 .name = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_NAME,
2968 .type = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_TYPE,
2969 },
2970 {
2971 .id = DEVLINK_PARAM_GENERIC_ID_MAX_MACS,
2972 .name = DEVLINK_PARAM_GENERIC_MAX_MACS_NAME,
2973 .type = DEVLINK_PARAM_GENERIC_MAX_MACS_TYPE,
2974 },
f567bcda
VV		 2975 {
2976 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_SRIOV,
2977 .name = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_NAME,
2978 .type = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_TYPE,
2979 },
f6a69885
AV		 2980 {
2981 .id = DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT,
2982 .name = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_NAME,
2983 .type = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_TYPE,
2984 },
e3b51061
VV		 2985 {
2986 .id = DEVLINK_PARAM_GENERIC_ID_IGNORE_ARI,
2987 .name = DEVLINK_PARAM_GENERIC_IGNORE_ARI_NAME,
2988 .type = DEVLINK_PARAM_GENERIC_IGNORE_ARI_TYPE,
2989 },
f61cba42
VV		 2990 {
2991 .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX,
2992 .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_NAME,
2993 .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_TYPE,
2994 },
16511789
VV		 2995 {
2996 .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN,
2997 .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_NAME,
2998 .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_TYPE,
2999 },
846e980a
ST		 3000 {
3001 .id = DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY,
3002 .name = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_NAME,
3003 .type = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_TYPE,
3004 },
5bbd21df
DM		 3005 {
3006 .id = DEVLINK_PARAM_GENERIC_ID_RESET_DEV_ON_DRV_PROBE,
3007 .name = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_NAME,
3008 .type = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_TYPE,
3009 },
6c7295e1
MG		 3010 {
3011 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_ROCE,
3012 .name = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_NAME,
3013 .type = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_TYPE,
3014 },
036467c3 3015};
eabaef18
MS		 3016
3017static int devlink_param_generic_verify(const struct devlink_param *param)
3018{
3019 /* verify it match generic parameter by id and name */
3020 if (param->id > DEVLINK_PARAM_GENERIC_ID_MAX)
3021 return -EINVAL;
3022 if (strcmp(param->name, devlink_param_generic[param->id].name))
3023 return -ENOENT;
3024
3025 WARN_ON(param->type != devlink_param_generic[param->id].type);
3026
3027 return 0;
3028}
3029
3030static int devlink_param_driver_verify(const struct devlink_param *param)
3031{
3032 int i;
3033
3034 if (param->id <= DEVLINK_PARAM_GENERIC_ID_MAX)
3035 return -EINVAL;
3036 /* verify no such name in generic params */
3037 for (i = 0; i <= DEVLINK_PARAM_GENERIC_ID_MAX; i++)
3038 if (!strcmp(param->name, devlink_param_generic[i].name))
3039 return -EEXIST;
3040
3041 return 0;
3042}
3043
3044static struct devlink_param_item *
3045devlink_param_find_by_name(struct list_head *param_list,
3046 const char *param_name)
3047{
3048 struct devlink_param_item *param_item;
3049
3050 list_for_each_entry(param_item, param_list, list)
3051 if (!strcmp(param_item->param->name, param_name))
3052 return param_item;
3053 return NULL;
3054}
3055
ec01aeb1
MS		 3056static struct devlink_param_item *
3057devlink_param_find_by_id(struct list_head *param_list, u32 param_id)
3058{
3059 struct devlink_param_item *param_item;
3060
3061 list_for_each_entry(param_item, param_list, list)
3062 if (param_item->param->id == param_id)
3063 return param_item;
3064 return NULL;
3065}
3066
45f05def
MS		 3067static bool
3068devlink_param_cmode_is_supported(const struct devlink_param *param,
3069 enum devlink_param_cmode cmode)
3070{
3071 return test_bit(cmode, &param->supported_cmodes);
3072}
3073
3074static int devlink_param_get(struct devlink *devlink,
3075 const struct devlink_param *param,
3076 struct devlink_param_gset_ctx *ctx)
3077{
3078 if (!param->get)
3079 return -EOPNOTSUPP;
3080 return param->get(devlink, param->id, ctx);
3081}
3082
e3b7ca18
MS		 3083static int devlink_param_set(struct devlink *devlink,
3084 const struct devlink_param *param,
3085 struct devlink_param_gset_ctx *ctx)
3086{
3087 if (!param->set)
3088 return -EOPNOTSUPP;
3089 return param->set(devlink, param->id, ctx);
3090}
3091
45f05def
MS		 3092static int
3093devlink_param_type_to_nla_type(enum devlink_param_type param_type)
3094{
3095 switch (param_type) {
3096 case DEVLINK_PARAM_TYPE_U8:
3097 return NLA_U8;
3098 case DEVLINK_PARAM_TYPE_U16:
3099 return NLA_U16;
3100 case DEVLINK_PARAM_TYPE_U32:
3101 return NLA_U32;
3102 case DEVLINK_PARAM_TYPE_STRING:
3103 return NLA_STRING;
3104 case DEVLINK_PARAM_TYPE_BOOL:
3105 return NLA_FLAG;
3106 default:
3107 return -EINVAL;
3108 }
3109}
3110
3111static int
3112devlink_nl_param_value_fill_one(struct sk_buff *msg,
3113 enum devlink_param_type type,
3114 enum devlink_param_cmode cmode,
3115 union devlink_param_value val)
3116{
3117 struct nlattr *param_value_attr;
3118
ae0be8de
MK		 3119 param_value_attr = nla_nest_start_noflag(msg,
3120 DEVLINK_ATTR_PARAM_VALUE);
45f05def
MS		 3121 if (!param_value_attr)
3122 goto nla_put_failure;
3123
3124 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_CMODE, cmode))
3125 goto value_nest_cancel;
3126
3127 switch (type) {
3128 case DEVLINK_PARAM_TYPE_U8:
3129 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu8))
3130 goto value_nest_cancel;
3131 break;
3132 case DEVLINK_PARAM_TYPE_U16:
3133 if (nla_put_u16(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu16))
3134 goto value_nest_cancel;
3135 break;
3136 case DEVLINK_PARAM_TYPE_U32:
3137 if (nla_put_u32(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu32))
3138 goto value_nest_cancel;
3139 break;
3140 case DEVLINK_PARAM_TYPE_STRING:
3141 if (nla_put_string(msg, DEVLINK_ATTR_PARAM_VALUE_DATA,
3142 val.vstr))
3143 goto value_nest_cancel;
3144 break;
3145 case DEVLINK_PARAM_TYPE_BOOL:
3146 if (val.vbool &&
3147 nla_put_flag(msg, DEVLINK_ATTR_PARAM_VALUE_DATA))
3148 goto value_nest_cancel;
3149 break;
3150 }
3151
3152 nla_nest_end(msg, param_value_attr);
3153 return 0;
3154
3155value_nest_cancel:
3156 nla_nest_cancel(msg, param_value_attr);
3157nla_put_failure:
3158 return -EMSGSIZE;
3159}
3160
3161static int devlink_nl_param_fill(struct sk_buff *msg, struct devlink *devlink,
f4601dee 3162 unsigned int port_index,
45f05def
MS		 3163 struct devlink_param_item *param_item,
3164 enum devlink_command cmd,
3165 u32 portid, u32 seq, int flags)
3166{
3167 union devlink_param_value param_value[DEVLINK_PARAM_CMODE_MAX + 1];
7c62cfb8 3168 bool param_value_set[DEVLINK_PARAM_CMODE_MAX + 1] = {};
45f05def
MS		 3169 const struct devlink_param *param = param_item->param;
3170 struct devlink_param_gset_ctx ctx;
3171 struct nlattr *param_values_list;
3172 struct nlattr *param_attr;
3173 int nla_type;
3174 void *hdr;
3175 int err;
3176 int i;
3177
3178 /* Get value from driver part to driverinit configuration mode */
3179 for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
3180 if (!devlink_param_cmode_is_supported(param, i))
3181 continue;
3182 if (i == DEVLINK_PARAM_CMODE_DRIVERINIT) {
3183 if (!param_item->driverinit_value_valid)
3184 return -EOPNOTSUPP;
3185 param_value[i] = param_item->driverinit_value;
3186 } else {
7c62cfb8
JP		 3187 if (!param_item->published)
3188 continue;
45f05def
MS		 3189 ctx.cmode = i;
3190 err = devlink_param_get(devlink, param, &ctx);
3191 if (err)
3192 return err;
3193 param_value[i] = ctx.val;
3194 }
7c62cfb8 3195 param_value_set[i] = true;
45f05def
MS		 3196 }
3197
3198 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
3199 if (!hdr)
3200 return -EMSGSIZE;
3201
3202 if (devlink_nl_put_handle(msg, devlink))
3203 goto genlmsg_cancel;
f4601dee 3204
c1e5786d
VV		 3205 if (cmd == DEVLINK_CMD_PORT_PARAM_GET ||
3206 cmd == DEVLINK_CMD_PORT_PARAM_NEW ||
3207 cmd == DEVLINK_CMD_PORT_PARAM_DEL)
f4601dee
VV		 3208 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, port_index))
3209 goto genlmsg_cancel;
3210
ae0be8de 3211 param_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PARAM);
45f05def
MS		 3212 if (!param_attr)
3213 goto genlmsg_cancel;
3214 if (nla_put_string(msg, DEVLINK_ATTR_PARAM_NAME, param->name))
3215 goto param_nest_cancel;
3216 if (param->generic && nla_put_flag(msg, DEVLINK_ATTR_PARAM_GENERIC))
3217 goto param_nest_cancel;
3218
3219 nla_type = devlink_param_type_to_nla_type(param->type);
3220 if (nla_type < 0)
3221 goto param_nest_cancel;
3222 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_TYPE, nla_type))
3223 goto param_nest_cancel;
3224
ae0be8de
MK		 3225 param_values_list = nla_nest_start_noflag(msg,
3226 DEVLINK_ATTR_PARAM_VALUES_LIST);
45f05def
MS		 3227 if (!param_values_list)
3228 goto param_nest_cancel;
3229
3230 for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
7c62cfb8 3231 if (!param_value_set[i])
45f05def
MS		 3232 continue;
3233 err = devlink_nl_param_value_fill_one(msg, param->type,
3234 i, param_value[i]);
3235 if (err)
3236 goto values_list_nest_cancel;
3237 }
3238
3239 nla_nest_end(msg, param_values_list);
3240 nla_nest_end(msg, param_attr);
3241 genlmsg_end(msg, hdr);
3242 return 0;
3243
3244values_list_nest_cancel:
3245 nla_nest_end(msg, param_values_list);
3246param_nest_cancel:
3247 nla_nest_cancel(msg, param_attr);
3248genlmsg_cancel:
3249 genlmsg_cancel(msg, hdr);
3250 return -EMSGSIZE;
3251}
3252
ea601e17 3253static void devlink_param_notify(struct devlink *devlink,
c1e5786d 3254 unsigned int port_index,
ea601e17
MS		 3255 struct devlink_param_item *param_item,
3256 enum devlink_command cmd)
3257{
3258 struct sk_buff *msg;
3259 int err;
3260
c1e5786d
VV		 3261 WARN_ON(cmd != DEVLINK_CMD_PARAM_NEW && cmd != DEVLINK_CMD_PARAM_DEL &&
3262 cmd != DEVLINK_CMD_PORT_PARAM_NEW &&
3263 cmd != DEVLINK_CMD_PORT_PARAM_DEL);
ea601e17
MS		 3264
3265 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3266 if (!msg)
3267 return;
c1e5786d
VV		 3268 err = devlink_nl_param_fill(msg, devlink, port_index, param_item, cmd,
3269 0, 0, 0);
ea601e17
MS		 3270 if (err) {
3271 nlmsg_free(msg);
3272 return;
3273 }
3274
3275 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
3276 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
3277}
3278
45f05def
MS		 3279static int devlink_nl_cmd_param_get_dumpit(struct sk_buff *msg,
3280 struct netlink_callback *cb)
3281{
3282 struct devlink_param_item *param_item;
3283 struct devlink *devlink;
3284 int start = cb->args[0];
3285 int idx = 0;
c62c2cfb 3286 int err = 0;
45f05def
MS		 3287
3288 mutex_lock(&devlink_mutex);
3289 list_for_each_entry(devlink, &devlink_list, list) {
3290 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
3291 continue;
3292 mutex_lock(&devlink->lock);
3293 list_for_each_entry(param_item, &devlink->param_list, list) {
3294 if (idx < start) {
3295 idx++;
3296 continue;
3297 }
f4601dee 3298 err = devlink_nl_param_fill(msg, devlink, 0, param_item,
45f05def
MS		 3299 DEVLINK_CMD_PARAM_GET,
3300 NETLINK_CB(cb->skb).portid,
3301 cb->nlh->nlmsg_seq,
3302 NLM_F_MULTI);
93c2fcb0 3303 if (err && err != -EOPNOTSUPP) {
45f05def
MS		 3304 mutex_unlock(&devlink->lock);
3305 goto out;
3306 }
3307 idx++;
3308 }
3309 mutex_unlock(&devlink->lock);
3310 }
3311out:
3312 mutex_unlock(&devlink_mutex);
3313
c62c2cfb
JP		 3314 if (err != -EMSGSIZE)
3315 return err;
3316
45f05def
MS		 3317 cb->args[0] = idx;
3318 return msg->len;
3319}
3320
e3b7ca18
MS		 3321static int
3322devlink_param_type_get_from_info(struct genl_info *info,
3323 enum devlink_param_type *param_type)
3324{
3325 if (!info->attrs[DEVLINK_ATTR_PARAM_TYPE])
3326 return -EINVAL;
3327
3328 switch (nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_TYPE])) {
3329 case NLA_U8:
3330 *param_type = DEVLINK_PARAM_TYPE_U8;
3331 break;
3332 case NLA_U16:
3333 *param_type = DEVLINK_PARAM_TYPE_U16;
3334 break;
3335 case NLA_U32:
3336 *param_type = DEVLINK_PARAM_TYPE_U32;
3337 break;
3338 case NLA_STRING:
3339 *param_type = DEVLINK_PARAM_TYPE_STRING;
3340 break;
3341 case NLA_FLAG:
3342 *param_type = DEVLINK_PARAM_TYPE_BOOL;
3343 break;
3344 default:
3345 return -EINVAL;
3346 }
3347
3348 return 0;
3349}
3350
3351static int
3352devlink_param_value_get_from_info(const struct devlink_param *param,
3353 struct genl_info *info,
3354 union devlink_param_value *value)
3355{
8750939b 3356 struct nlattr *param_data;
f355cfcd
MS		 3357 int len;
3358
8750939b
JK		 3359 param_data = info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA];
3360
3361 if (param->type != DEVLINK_PARAM_TYPE_BOOL && !param_data)
e3b7ca18
MS		 3362 return -EINVAL;
3363
3364 switch (param->type) {
3365 case DEVLINK_PARAM_TYPE_U8:
8750939b
JK		 3366 if (nla_len(param_data) != sizeof(u8))
3367 return -EINVAL;
3368 value->vu8 = nla_get_u8(param_data);
e3b7ca18
MS		 3369 break;
3370 case DEVLINK_PARAM_TYPE_U16:
8750939b
JK		 3371 if (nla_len(param_data) != sizeof(u16))
3372 return -EINVAL;
3373 value->vu16 = nla_get_u16(param_data);
e3b7ca18
MS		 3374 break;
3375 case DEVLINK_PARAM_TYPE_U32:
8750939b
JK		 3376 if (nla_len(param_data) != sizeof(u32))
3377 return -EINVAL;
3378 value->vu32 = nla_get_u32(param_data);
e3b7ca18
MS		 3379 break;
3380 case DEVLINK_PARAM_TYPE_STRING:
8750939b
JK		 3381 len = strnlen(nla_data(param_data), nla_len(param_data));
3382 if (len == nla_len(param_data) ||
bde74ad1 3383 len >= __DEVLINK_PARAM_MAX_STRING_VALUE)
e3b7ca18 3384 return -EINVAL;
8750939b 3385 strcpy(value->vstr, nla_data(param_data));
e3b7ca18
MS		 3386 break;
3387 case DEVLINK_PARAM_TYPE_BOOL:
8750939b
JK		 3388 if (param_data && nla_len(param_data))
3389 return -EINVAL;
3390 value->vbool = nla_get_flag(param_data);
e3b7ca18
MS		 3391 break;
3392 }
3393 return 0;
3394}
3395
45f05def 3396static struct devlink_param_item *
f4601dee 3397devlink_param_get_from_info(struct list_head *param_list,
45f05def
MS		 3398 struct genl_info *info)
3399{
3400 char *param_name;
3401
3402 if (!info->attrs[DEVLINK_ATTR_PARAM_NAME])
3403 return NULL;
3404
3405 param_name = nla_data(info->attrs[DEVLINK_ATTR_PARAM_NAME]);
f4601dee 3406 return devlink_param_find_by_name(param_list, param_name);
45f05def
MS		 3407}
3408
3409static int devlink_nl_cmd_param_get_doit(struct sk_buff *skb,
3410 struct genl_info *info)
3411{
3412 struct devlink *devlink = info->user_ptr[0];
3413 struct devlink_param_item *param_item;
3414 struct sk_buff *msg;
3415 int err;
3416
f4601dee 3417 param_item = devlink_param_get_from_info(&devlink->param_list, info);
45f05def
MS		 3418 if (!param_item)
3419 return -EINVAL;
3420
3421 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3422 if (!msg)
3423 return -ENOMEM;
3424
f4601dee 3425 err = devlink_nl_param_fill(msg, devlink, 0, param_item,
45f05def
MS		 3426 DEVLINK_CMD_PARAM_GET,
3427 info->snd_portid, info->snd_seq, 0);
3428 if (err) {
3429 nlmsg_free(msg);
3430 return err;
3431 }
3432
3433 return genlmsg_reply(msg, info);
3434}
3435
9c54873b 3436static int __devlink_nl_cmd_param_set_doit(struct devlink *devlink,
c1e5786d 3437 unsigned int port_index,
9c54873b
VV		 3438 struct list_head *param_list,
3439 struct genl_info *info,
3440 enum devlink_command cmd)
e3b7ca18 3441{
e3b7ca18
MS		 3442 enum devlink_param_type param_type;
3443 struct devlink_param_gset_ctx ctx;
3444 enum devlink_param_cmode cmode;
3445 struct devlink_param_item *param_item;
3446 const struct devlink_param *param;
3447 union devlink_param_value value;
3448 int err = 0;
3449
9c54873b 3450 param_item = devlink_param_get_from_info(param_list, info);
e3b7ca18
MS		 3451 if (!param_item)
3452 return -EINVAL;
3453 param = param_item->param;
3454 err = devlink_param_type_get_from_info(info, &param_type);
3455 if (err)
3456 return err;
3457 if (param_type != param->type)
3458 return -EINVAL;
3459 err = devlink_param_value_get_from_info(param, info, &value);
3460 if (err)
3461 return err;
3462 if (param->validate) {
3463 err = param->validate(devlink, param->id, value, info->extack);
3464 if (err)
3465 return err;
3466 }
3467
3468 if (!info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE])
3469 return -EINVAL;
3470 cmode = nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE]);
3471 if (!devlink_param_cmode_is_supported(param, cmode))
3472 return -EOPNOTSUPP;
3473
3474 if (cmode == DEVLINK_PARAM_CMODE_DRIVERINIT) {
1276534c
MS		 3475 if (param->type == DEVLINK_PARAM_TYPE_STRING)
3476 strcpy(param_item->driverinit_value.vstr, value.vstr);
3477 else
3478 param_item->driverinit_value = value;
e3b7ca18
MS		 3479 param_item->driverinit_value_valid = true;
3480 } else {
3481 if (!param->set)
3482 return -EOPNOTSUPP;
3483 ctx.val = value;
3484 ctx.cmode = cmode;
3485 err = devlink_param_set(devlink, param, &ctx);
3486 if (err)
3487 return err;
3488 }
3489
c1e5786d 3490 devlink_param_notify(devlink, port_index, param_item, cmd);
e3b7ca18
MS		 3491 return 0;
3492}
3493
9c54873b
VV		 3494static int devlink_nl_cmd_param_set_doit(struct sk_buff *skb,
3495 struct genl_info *info)
3496{
3497 struct devlink *devlink = info->user_ptr[0];
3498
c1e5786d 3499 return __devlink_nl_cmd_param_set_doit(devlink, 0, &devlink->param_list,
9c54873b
VV		 3500 info, DEVLINK_CMD_PARAM_NEW);
3501}
3502
eabaef18 3503static int devlink_param_register_one(struct devlink *devlink,
c1e5786d 3504 unsigned int port_index,
39e6160e 3505 struct list_head *param_list,
c1e5786d
VV		 3506 const struct devlink_param *param,
3507 enum devlink_command cmd)
eabaef18
MS		 3508{
3509 struct devlink_param_item *param_item;
3510
39e6160e 3511 if (devlink_param_find_by_name(param_list, param->name))
eabaef18
MS		 3512 return -EEXIST;
3513
3514 if (param->supported_cmodes == BIT(DEVLINK_PARAM_CMODE_DRIVERINIT))
3515 WARN_ON(param->get || param->set);
3516 else
3517 WARN_ON(!param->get || !param->set);
3518
3519 param_item = kzalloc(sizeof(*param_item), GFP_KERNEL);
3520 if (!param_item)
3521 return -ENOMEM;
3522 param_item->param = param;
3523
39e6160e 3524 list_add_tail(&param_item->list, param_list);
c1e5786d 3525 devlink_param_notify(devlink, port_index, param_item, cmd);
eabaef18
MS		 3526 return 0;
3527}
3528
3529static void devlink_param_unregister_one(struct devlink *devlink,
c1e5786d 3530 unsigned int port_index,
39e6160e 3531 struct list_head *param_list,
c1e5786d
VV		 3532 const struct devlink_param *param,
3533 enum devlink_command cmd)
eabaef18
MS		 3534{
3535 struct devlink_param_item *param_item;
3536
39e6160e 3537 param_item = devlink_param_find_by_name(param_list, param->name);
eabaef18 3538 WARN_ON(!param_item);
c1e5786d 3539 devlink_param_notify(devlink, port_index, param_item, cmd);
eabaef18
MS		 3540 list_del(&param_item->list);
3541 kfree(param_item);
3542}
3543
f4601dee
VV		 3544static int devlink_nl_cmd_port_param_get_dumpit(struct sk_buff *msg,
3545 struct netlink_callback *cb)
3546{
3547 struct devlink_param_item *param_item;
3548 struct devlink_port *devlink_port;
3549 struct devlink *devlink;
3550 int start = cb->args[0];
3551 int idx = 0;
c62c2cfb 3552 int err = 0;
f4601dee
VV		 3553
3554 mutex_lock(&devlink_mutex);
3555 list_for_each_entry(devlink, &devlink_list, list) {
3556 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
3557 continue;
3558 mutex_lock(&devlink->lock);
3559 list_for_each_entry(devlink_port, &devlink->port_list, list) {
3560 list_for_each_entry(param_item,
3561 &devlink_port->param_list, list) {
3562 if (idx < start) {
3563 idx++;
3564 continue;
3565 }
3566 err = devlink_nl_param_fill(msg,
3567 devlink_port->devlink,
3568 devlink_port->index, param_item,
3569 DEVLINK_CMD_PORT_PARAM_GET,
3570 NETLINK_CB(cb->skb).portid,
3571 cb->nlh->nlmsg_seq,
3572 NLM_F_MULTI);
93c2fcb0 3573 if (err && err != -EOPNOTSUPP) {
f4601dee
VV		 3574 mutex_unlock(&devlink->lock);
3575 goto out;
3576 }
3577 idx++;
3578 }
3579 }
3580 mutex_unlock(&devlink->lock);
3581 }
3582out:
3583 mutex_unlock(&devlink_mutex);
3584
c62c2cfb
JP		 3585 if (err != -EMSGSIZE)
3586 return err;
3587
f4601dee
VV		 3588 cb->args[0] = idx;
3589 return msg->len;
3590}
3591
3592static int devlink_nl_cmd_port_param_get_doit(struct sk_buff *skb,
3593 struct genl_info *info)
3594{
3595 struct devlink_port *devlink_port = info->user_ptr[0];
3596 struct devlink_param_item *param_item;
3597 struct sk_buff *msg;
3598 int err;
3599
3600 param_item = devlink_param_get_from_info(&devlink_port->param_list,
3601 info);
3602 if (!param_item)
3603 return -EINVAL;
3604
3605 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3606 if (!msg)
3607 return -ENOMEM;
3608
3609 err = devlink_nl_param_fill(msg, devlink_port->devlink,
3610 devlink_port->index, param_item,
3611 DEVLINK_CMD_PORT_PARAM_GET,
3612 info->snd_portid, info->snd_seq, 0);
3613 if (err) {
3614 nlmsg_free(msg);
3615 return err;
3616 }
3617
3618 return genlmsg_reply(msg, info);
3619}
3620
9c54873b
VV		 3621static int devlink_nl_cmd_port_param_set_doit(struct sk_buff *skb,
3622 struct genl_info *info)
3623{
3624 struct devlink_port *devlink_port = info->user_ptr[0];
3625
3626 return __devlink_nl_cmd_param_set_doit(devlink_port->devlink,
c1e5786d
VV		 3627 devlink_port->index,
3628 &devlink_port->param_list, info,
3629 DEVLINK_CMD_PORT_PARAM_NEW);
9c54873b
VV		 3630}
3631
a006d467
AV		 3632static int devlink_nl_region_snapshot_id_put(struct sk_buff *msg,
3633 struct devlink *devlink,
3634 struct devlink_snapshot *snapshot)
3635{
3636 struct nlattr *snap_attr;
3637 int err;
3638
ae0be8de 3639 snap_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_SNAPSHOT);
a006d467
AV		 3640 if (!snap_attr)
3641 return -EINVAL;
3642
3643 err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID, snapshot->id);
3644 if (err)
3645 goto nla_put_failure;
3646
3647 nla_nest_end(msg, snap_attr);
3648 return 0;
3649
3650nla_put_failure:
3651 nla_nest_cancel(msg, snap_attr);
3652 return err;
3653}
3654
3655static int devlink_nl_region_snapshots_id_put(struct sk_buff *msg,
3656 struct devlink *devlink,
3657 struct devlink_region *region)
3658{
3659 struct devlink_snapshot *snapshot;
3660 struct nlattr *snapshots_attr;
3661 int err;
3662
ae0be8de
MK		 3663 snapshots_attr = nla_nest_start_noflag(msg,
3664 DEVLINK_ATTR_REGION_SNAPSHOTS);
a006d467
AV		 3665 if (!snapshots_attr)
3666 return -EINVAL;
3667
3668 list_for_each_entry(snapshot, &region->snapshot_list, list) {
3669 err = devlink_nl_region_snapshot_id_put(msg, devlink, snapshot);
3670 if (err)
3671 goto nla_put_failure;
3672 }
3673
3674 nla_nest_end(msg, snapshots_attr);
3675 return 0;
3676
3677nla_put_failure:
3678 nla_nest_cancel(msg, snapshots_attr);
3679 return err;
3680}
3681
d8db7ea5
AV		 3682static int devlink_nl_region_fill(struct sk_buff *msg, struct devlink *devlink,
3683 enum devlink_command cmd, u32 portid,
3684 u32 seq, int flags,
3685 struct devlink_region *region)
3686{
3687 void *hdr;
3688 int err;
3689
3690 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
3691 if (!hdr)
3692 return -EMSGSIZE;
3693
3694 err = devlink_nl_put_handle(msg, devlink);
3695 if (err)
3696 goto nla_put_failure;
3697
3698 err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME, region->name);
3699 if (err)
3700 goto nla_put_failure;
3701
3702 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
3703 region->size,
3704 DEVLINK_ATTR_PAD);
3705 if (err)
3706 goto nla_put_failure;
3707
a006d467
AV		 3708 err = devlink_nl_region_snapshots_id_put(msg, devlink, region);
3709 if (err)
3710 goto nla_put_failure;
3711
d8db7ea5
AV		 3712 genlmsg_end(msg, hdr);
3713 return 0;
3714
3715nla_put_failure:
3716 genlmsg_cancel(msg, hdr);
3717 return err;
3718}
3719
866319bb
AV		 3720static void devlink_nl_region_notify(struct devlink_region *region,
3721 struct devlink_snapshot *snapshot,
3722 enum devlink_command cmd)
3723{
3724 struct devlink *devlink = region->devlink;
3725 struct sk_buff *msg;
3726 void *hdr;
3727 int err;
3728
3729 WARN_ON(cmd != DEVLINK_CMD_REGION_NEW && cmd != DEVLINK_CMD_REGION_DEL);
3730
3731 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3732 if (!msg)
3733 return;
3734
3735 hdr = genlmsg_put(msg, 0, 0, &devlink_nl_family, 0, cmd);
3736 if (!hdr)
3737 goto out_free_msg;
3738
3739 err = devlink_nl_put_handle(msg, devlink);
3740 if (err)
3741 goto out_cancel_msg;
3742
3743 err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME,
3744 region->name);
3745 if (err)
3746 goto out_cancel_msg;
3747
3748 if (snapshot) {
3749 err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID,
3750 snapshot->id);
3751 if (err)
3752 goto out_cancel_msg;
3753 } else {
3754 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
3755 region->size, DEVLINK_ATTR_PAD);
3756 if (err)
3757 goto out_cancel_msg;
3758 }
3759 genlmsg_end(msg, hdr);
3760
3761 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
3762 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
3763
3764 return;
3765
3766out_cancel_msg:
3767 genlmsg_cancel(msg, hdr);
3768out_free_msg:
3769 nlmsg_free(msg);
3770}
3771
92b49822
JP		 3772static void devlink_region_snapshot_del(struct devlink_region *region,
3773 struct devlink_snapshot *snapshot)
3774{
3775 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_DEL);
3776 region->cur_snapshots--;
3777 list_del(&snapshot->list);
3778 (*snapshot->data_destructor)(snapshot->data);
3779 kfree(snapshot);
3780}
3781
d8db7ea5
AV		 3782static int devlink_nl_cmd_region_get_doit(struct sk_buff *skb,
3783 struct genl_info *info)
3784{
3785 struct devlink *devlink = info->user_ptr[0];
3786 struct devlink_region *region;
3787 const char *region_name;
3788 struct sk_buff *msg;
3789 int err;
3790
3791 if (!info->attrs[DEVLINK_ATTR_REGION_NAME])
3792 return -EINVAL;
3793
3794 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
3795 region = devlink_region_get_by_name(devlink, region_name);
3796 if (!region)
3797 return -EINVAL;
3798
3799 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3800 if (!msg)
3801 return -ENOMEM;
3802
3803 err = devlink_nl_region_fill(msg, devlink, DEVLINK_CMD_REGION_GET,
3804 info->snd_portid, info->snd_seq, 0,
3805 region);
3806 if (err) {
3807 nlmsg_free(msg);
3808 return err;
3809 }
3810
3811 return genlmsg_reply(msg, info);
3812}
3813
3814static int devlink_nl_cmd_region_get_dumpit(struct sk_buff *msg,
3815 struct netlink_callback *cb)
3816{
3817 struct devlink_region *region;
3818 struct devlink *devlink;
3819 int start = cb->args[0];
3820 int idx = 0;
3821 int err;
3822
3823 mutex_lock(&devlink_mutex);
3824 list_for_each_entry(devlink, &devlink_list, list) {
3825 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
3826 continue;
3827
3828 mutex_lock(&devlink->lock);
3829 list_for_each_entry(region, &devlink->region_list, list) {
3830 if (idx < start) {
3831 idx++;
3832 continue;
3833 }
3834 err = devlink_nl_region_fill(msg, devlink,
3835 DEVLINK_CMD_REGION_GET,
3836 NETLINK_CB(cb->skb).portid,
3837 cb->nlh->nlmsg_seq,
3838 NLM_F_MULTI, region);
3839 if (err) {
3840 mutex_unlock(&devlink->lock);
3841 goto out;
3842 }
3843 idx++;
3844 }
3845 mutex_unlock(&devlink->lock);
3846 }
3847out:
3848 mutex_unlock(&devlink_mutex);
3849 cb->args[0] = idx;
3850 return msg->len;
3851}
3852
866319bb
AV		 3853static int devlink_nl_cmd_region_del(struct sk_buff *skb,
3854 struct genl_info *info)
3855{
3856 struct devlink *devlink = info->user_ptr[0];
3857 struct devlink_snapshot *snapshot;
3858 struct devlink_region *region;
3859 const char *region_name;
3860 u32 snapshot_id;
3861
3862 if (!info->attrs[DEVLINK_ATTR_REGION_NAME] ||
3863 !info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID])
3864 return -EINVAL;
3865
3866 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
3867 snapshot_id = nla_get_u32(info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
3868
3869 region = devlink_region_get_by_name(devlink, region_name);
3870 if (!region)
3871 return -EINVAL;
3872
3873 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
3874 if (!snapshot)
3875 return -EINVAL;
3876
92b49822 3877 devlink_region_snapshot_del(region, snapshot);
866319bb
AV		 3878 return 0;
3879}
3880
4e54795a
AV		 3881static int devlink_nl_cmd_region_read_chunk_fill(struct sk_buff *msg,
3882 struct devlink *devlink,
3883 u8 *chunk, u32 chunk_size,
3884 u64 addr)
3885{
3886 struct nlattr *chunk_attr;
3887 int err;
3888
ae0be8de 3889 chunk_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_CHUNK);
4e54795a
AV		 3890 if (!chunk_attr)
3891 return -EINVAL;
3892
3893 err = nla_put(msg, DEVLINK_ATTR_REGION_CHUNK_DATA, chunk_size, chunk);
3894 if (err)
3895 goto nla_put_failure;
3896
3897 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_CHUNK_ADDR, addr,
3898 DEVLINK_ATTR_PAD);
3899 if (err)
3900 goto nla_put_failure;
3901
3902 nla_nest_end(msg, chunk_attr);
3903 return 0;
3904
3905nla_put_failure:
3906 nla_nest_cancel(msg, chunk_attr);
3907 return err;
3908}
3909
3910#define DEVLINK_REGION_READ_CHUNK_SIZE 256
3911
3912static int devlink_nl_region_read_snapshot_fill(struct sk_buff *skb,
3913 struct devlink *devlink,
3914 struct devlink_region *region,
3915 struct nlattr **attrs,
3916 u64 start_offset,
3917 u64 end_offset,
3918 bool dump,
3919 u64 *new_offset)
3920{
3921 struct devlink_snapshot *snapshot;
3922 u64 curr_offset = start_offset;
3923 u32 snapshot_id;
3924 int err = 0;
3925
3926 *new_offset = start_offset;
3927
3928 snapshot_id = nla_get_u32(attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
3929 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
3930 if (!snapshot)
3931 return -EINVAL;
3932
3a5e5234
JP		 3933 if (end_offset > region->size || dump)
3934 end_offset = region->size;
4e54795a
AV		 3935
3936 while (curr_offset < end_offset) {
3937 u32 data_size;
3938 u8 *data;
3939
3940 if (end_offset - curr_offset < DEVLINK_REGION_READ_CHUNK_SIZE)
3941 data_size = end_offset - curr_offset;
3942 else
3943 data_size = DEVLINK_REGION_READ_CHUNK_SIZE;
3944
3945 data = &snapshot->data[curr_offset];
3946 err = devlink_nl_cmd_region_read_chunk_fill(skb, devlink,
3947 data, data_size,
3948 curr_offset);
3949 if (err)
3950 break;
3951
3952 curr_offset += data_size;
3953 }
3954 *new_offset = curr_offset;
3955
3956 return err;
3957}
3958
3959static int devlink_nl_cmd_region_read_dumpit(struct sk_buff *skb,
3960 struct netlink_callback *cb)
3961{
ee85da53 3962 const struct genl_dumpit_info *info = genl_dumpit_info(cb);
4e54795a 3963 u64 ret_offset, start_offset, end_offset = 0;
ee85da53 3964 struct nlattr **attrs = info->attrs;
4e54795a
AV		 3965 struct devlink_region *region;
3966 struct nlattr *chunks_attr;
3967 const char *region_name;
3968 struct devlink *devlink;
3969 bool dump = true;
3970 void *hdr;
3971 int err;
3972
3973 start_offset = *((u64 *)&cb->args[0]);
3974
dac7c08f 3975 mutex_lock(&devlink_mutex);
4e54795a 3976 devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
fdd41ec2
PP		 3977 if (IS_ERR(devlink)) {
3978 err = PTR_ERR(devlink);
dac7c08f 3979 goto out_dev;
fdd41ec2 3980 }
4e54795a 3981
4e54795a
AV		 3982 mutex_lock(&devlink->lock);
3983
3984 if (!attrs[DEVLINK_ATTR_REGION_NAME] ||
fdd41ec2
PP		 3985 !attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]) {
3986 err = -EINVAL;
4e54795a 3987 goto out_unlock;
fdd41ec2 3988 }
4e54795a
AV		 3989
3990 region_name = nla_data(attrs[DEVLINK_ATTR_REGION_NAME]);
3991 region = devlink_region_get_by_name(devlink, region_name);
fdd41ec2
PP		 3992 if (!region) {
3993 err = -EINVAL;
4e54795a 3994 goto out_unlock;
fdd41ec2 3995 }
4e54795a 3996
d5b90e99
JK		 3997 /* return 0 if there is no further data to read */
3998 if (start_offset >= region->size) {
3999 err = 0;
4000 goto out_unlock;
4001 }
4002
4e54795a
AV		 4003 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
4004 &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI,
4005 DEVLINK_CMD_REGION_READ);
fdd41ec2
PP		 4006 if (!hdr) {
4007 err = -EMSGSIZE;
4e54795a 4008 goto out_unlock;
fdd41ec2 4009 }
4e54795a
AV		 4010
4011 err = devlink_nl_put_handle(skb, devlink);
4012 if (err)
4013 goto nla_put_failure;
4014
4015 err = nla_put_string(skb, DEVLINK_ATTR_REGION_NAME, region_name);
4016 if (err)
4017 goto nla_put_failure;
4018
ae0be8de 4019 chunks_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_REGION_CHUNKS);
fdd41ec2
PP		 4020 if (!chunks_attr) {
4021 err = -EMSGSIZE;
4e54795a 4022 goto nla_put_failure;
fdd41ec2 4023 }
4e54795a
AV		 4024
4025 if (attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR] &&
4026 attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]) {
4027 if (!start_offset)
4028 start_offset =
4029 nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
4030
4031 end_offset = nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
4032 end_offset += nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]);
4033 dump = false;
4034 }
4035
4036 err = devlink_nl_region_read_snapshot_fill(skb, devlink,
4037 region, attrs,
4038 start_offset,
4039 end_offset, dump,
4040 &ret_offset);
4041
4042 if (err && err != -EMSGSIZE)
4043 goto nla_put_failure;
4044
4045 /* Check if there was any progress done to prevent infinite loop */
fdd41ec2
PP		 4046 if (ret_offset == start_offset) {
4047 err = -EINVAL;
4e54795a 4048 goto nla_put_failure;
fdd41ec2 4049 }
4e54795a
AV		 4050
4051 *((u64 *)&cb->args[0]) = ret_offset;
4052
4053 nla_nest_end(skb, chunks_attr);
4054 genlmsg_end(skb, hdr);
4055 mutex_unlock(&devlink->lock);
4056 mutex_unlock(&devlink_mutex);
4057
4058 return skb->len;
4059
4060nla_put_failure:
4061 genlmsg_cancel(skb, hdr);
4062out_unlock:
4063 mutex_unlock(&devlink->lock);
dac7c08f 4064out_dev:
4e54795a 4065 mutex_unlock(&devlink_mutex);
fdd41ec2 4066 return err;
4e54795a
AV		 4067}
4068
f9cf2288
JK		 4069struct devlink_info_req {
4070 struct sk_buff *msg;
4071};
4072
4073int devlink_info_driver_name_put(struct devlink_info_req *req, const char *name)
4074{
4075 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_DRIVER_NAME, name);
4076}
4077EXPORT_SYMBOL_GPL(devlink_info_driver_name_put);
4078
4079int devlink_info_serial_number_put(struct devlink_info_req *req, const char *sn)
4080{
4081 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_SERIAL_NUMBER, sn);
4082}
4083EXPORT_SYMBOL_GPL(devlink_info_serial_number_put);
4084
fc6fae7d
JK		 4085static int devlink_info_version_put(struct devlink_info_req *req, int attr,
4086 const char *version_name,
4087 const char *version_value)
4088{
4089 struct nlattr *nest;
4090 int err;
4091
ae0be8de 4092 nest = nla_nest_start_noflag(req->msg, attr);
fc6fae7d
JK		 4093 if (!nest)
4094 return -EMSGSIZE;
4095
4096 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_NAME,
4097 version_name);
4098 if (err)
4099 goto nla_put_failure;
4100
4101 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_VALUE,
4102 version_value);
4103 if (err)
4104 goto nla_put_failure;
4105
4106 nla_nest_end(req->msg, nest);
4107
4108 return 0;
4109
4110nla_put_failure:
4111 nla_nest_cancel(req->msg, nest);
4112 return err;
4113}
4114
4115int devlink_info_version_fixed_put(struct devlink_info_req *req,
4116 const char *version_name,
4117 const char *version_value)
4118{
4119 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_FIXED,
4120 version_name, version_value);
4121}
4122EXPORT_SYMBOL_GPL(devlink_info_version_fixed_put);
4123
4124int devlink_info_version_stored_put(struct devlink_info_req *req,
4125 const char *version_name,
4126 const char *version_value)
4127{
4128 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_STORED,
4129 version_name, version_value);
4130}
4131EXPORT_SYMBOL_GPL(devlink_info_version_stored_put);
4132
4133int devlink_info_version_running_put(struct devlink_info_req *req,
4134 const char *version_name,
4135 const char *version_value)
4136{
4137 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_RUNNING,
4138 version_name, version_value);
4139}
4140EXPORT_SYMBOL_GPL(devlink_info_version_running_put);
4141
f9cf2288
JK		 4142static int
4143devlink_nl_info_fill(struct sk_buff *msg, struct devlink *devlink,
4144 enum devlink_command cmd, u32 portid,
4145 u32 seq, int flags, struct netlink_ext_ack *extack)
4146{
4147 struct devlink_info_req req;
4148 void *hdr;
4149 int err;
4150
4151 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
4152 if (!hdr)
4153 return -EMSGSIZE;
4154
4155 err = -EMSGSIZE;
4156 if (devlink_nl_put_handle(msg, devlink))
4157 goto err_cancel_msg;
4158
4159 req.msg = msg;
4160 err = devlink->ops->info_get(devlink, &req, extack);
4161 if (err)
4162 goto err_cancel_msg;
4163
4164 genlmsg_end(msg, hdr);
4165 return 0;
4166
4167err_cancel_msg:
4168 genlmsg_cancel(msg, hdr);
4169 return err;
4170}
4171
4172static int devlink_nl_cmd_info_get_doit(struct sk_buff *skb,
4173 struct genl_info *info)
4174{
4175 struct devlink *devlink = info->user_ptr[0];
4176 struct sk_buff *msg;
4177 int err;
4178
be6fe1d8 4179 if (!devlink->ops->info_get)
f9cf2288
JK		 4180 return -EOPNOTSUPP;
4181
4182 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4183 if (!msg)
4184 return -ENOMEM;
4185
4186 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
4187 info->snd_portid, info->snd_seq, 0,
4188 info->extack);
4189 if (err) {
4190 nlmsg_free(msg);
4191 return err;
4192 }
4193
4194 return genlmsg_reply(msg, info);
4195}
4196
4197static int devlink_nl_cmd_info_get_dumpit(struct sk_buff *msg,
4198 struct netlink_callback *cb)
4199{
4200 struct devlink *devlink;
4201 int start = cb->args[0];
4202 int idx = 0;
c62c2cfb 4203 int err = 0;
f9cf2288
JK		 4204
4205 mutex_lock(&devlink_mutex);
4206 list_for_each_entry(devlink, &devlink_list, list) {
4207 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
4208 continue;
4209 if (idx < start) {
4210 idx++;
4211 continue;
4212 }
4213
c493b09b
JP		 4214 if (!devlink->ops->info_get) {
4215 idx++;
4216 continue;
4217 }
4218
f9cf2288
JK		 4219 mutex_lock(&devlink->lock);
4220 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
4221 NETLINK_CB(cb->skb).portid,
4222 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4223 cb->extack);
4224 mutex_unlock(&devlink->lock);
93c2fcb0 4225 if (err && err != -EOPNOTSUPP)
f9cf2288
JK		 4226 break;
4227 idx++;
4228 }
4229 mutex_unlock(&devlink_mutex);
4230
c62c2cfb
JP		 4231 if (err != -EMSGSIZE)
4232 return err;
4233
f9cf2288
JK		 4234 cb->args[0] = idx;
4235 return msg->len;
4236}
4237
1db64e87
EBE		 4238struct devlink_fmsg_item {
4239 struct list_head list;
4240 int attrtype;
4241 u8 nla_type;
4242 u16 len;
d2afb41a 4243 int value[];
1db64e87
EBE		 4244};
4245
4246struct devlink_fmsg {
4247 struct list_head item_list;
573ed90a
AL		 4248 bool putting_binary; /* This flag forces enclosing of binary data
4249 * in an array brackets. It forces using
4250 * of designated API:
4251 * devlink_fmsg_binary_pair_nest_start()
4252 * devlink_fmsg_binary_pair_nest_end()
4253 */
1db64e87
EBE		 4254};
4255
4256static struct devlink_fmsg *devlink_fmsg_alloc(void)
4257{
4258 struct devlink_fmsg *fmsg;
4259
4260 fmsg = kzalloc(sizeof(*fmsg), GFP_KERNEL);
4261 if (!fmsg)
4262 return NULL;
4263
4264 INIT_LIST_HEAD(&fmsg->item_list);
4265
4266 return fmsg;
4267}
4268
4269static void devlink_fmsg_free(struct devlink_fmsg *fmsg)
4270{
4271 struct devlink_fmsg_item *item, *tmp;
4272
4273 list_for_each_entry_safe(item, tmp, &fmsg->item_list, list) {
4274 list_del(&item->list);
4275 kfree(item);
4276 }
4277 kfree(fmsg);
4278}
4279
4280static int devlink_fmsg_nest_common(struct devlink_fmsg *fmsg,
4281 int attrtype)
4282{
4283 struct devlink_fmsg_item *item;
4284
4285 item = kzalloc(sizeof(*item), GFP_KERNEL);
4286 if (!item)
4287 return -ENOMEM;
4288
4289 item->attrtype = attrtype;
4290 list_add_tail(&item->list, &fmsg->item_list);
4291
4292 return 0;
4293}
4294
4295int devlink_fmsg_obj_nest_start(struct devlink_fmsg *fmsg)
4296{
573ed90a
AL		 4297 if (fmsg->putting_binary)
4298 return -EINVAL;
4299
1db64e87
EBE		 4300 return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_OBJ_NEST_START);
4301}
4302EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_start);
4303
4304static int devlink_fmsg_nest_end(struct devlink_fmsg *fmsg)
4305{
573ed90a
AL		 4306 if (fmsg->putting_binary)
4307 return -EINVAL;
4308
1db64e87
EBE		 4309 return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_NEST_END);
4310}
4311
4312int devlink_fmsg_obj_nest_end(struct devlink_fmsg *fmsg)
4313{
573ed90a
AL		 4314 if (fmsg->putting_binary)
4315 return -EINVAL;
4316
1db64e87
EBE		 4317 return devlink_fmsg_nest_end(fmsg);
4318}
4319EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_end);
4320
4321#define DEVLINK_FMSG_MAX_SIZE (GENLMSG_DEFAULT_SIZE - GENL_HDRLEN - NLA_HDRLEN)
4322
4323static int devlink_fmsg_put_name(struct devlink_fmsg *fmsg, const char *name)
4324{
4325 struct devlink_fmsg_item *item;
4326
573ed90a
AL		 4327 if (fmsg->putting_binary)
4328 return -EINVAL;
4329
1db64e87
EBE		 4330 if (strlen(name) + 1 > DEVLINK_FMSG_MAX_SIZE)
4331 return -EMSGSIZE;
4332
4333 item = kzalloc(sizeof(*item) + strlen(name) + 1, GFP_KERNEL);
4334 if (!item)
4335 return -ENOMEM;
4336
4337 item->nla_type = NLA_NUL_STRING;
4338 item->len = strlen(name) + 1;
4339 item->attrtype = DEVLINK_ATTR_FMSG_OBJ_NAME;
4340 memcpy(&item->value, name, item->len);
4341 list_add_tail(&item->list, &fmsg->item_list);
4342
4343 return 0;
4344}
4345
4346int devlink_fmsg_pair_nest_start(struct devlink_fmsg *fmsg, const char *name)
4347{
4348 int err;
4349
573ed90a
AL		 4350 if (fmsg->putting_binary)
4351 return -EINVAL;
4352
1db64e87
EBE		 4353 err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_PAIR_NEST_START);
4354 if (err)
4355 return err;
4356
4357 err = devlink_fmsg_put_name(fmsg, name);
4358 if (err)
4359 return err;
4360
4361 return 0;
4362}
4363EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_start);
4364
4365int devlink_fmsg_pair_nest_end(struct devlink_fmsg *fmsg)
4366{
573ed90a
AL		 4367 if (fmsg->putting_binary)
4368 return -EINVAL;
4369
1db64e87
EBE		 4370 return devlink_fmsg_nest_end(fmsg);
4371}
4372EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_end);
4373
4374int devlink_fmsg_arr_pair_nest_start(struct devlink_fmsg *fmsg,
4375 const char *name)
4376{
4377 int err;
4378
573ed90a
AL		 4379 if (fmsg->putting_binary)
4380 return -EINVAL;
4381
1db64e87
EBE		 4382 err = devlink_fmsg_pair_nest_start(fmsg, name);
4383 if (err)
4384 return err;
4385
4386 err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_ARR_NEST_START);
4387 if (err)
4388 return err;
4389
4390 return 0;
4391}
4392EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_start);
4393
4394int devlink_fmsg_arr_pair_nest_end(struct devlink_fmsg *fmsg)
4395{
4396 int err;
4397
573ed90a
AL		 4398 if (fmsg->putting_binary)
4399 return -EINVAL;
4400
1db64e87
EBE		 4401 err = devlink_fmsg_nest_end(fmsg);
4402 if (err)
4403 return err;
4404
4405 err = devlink_fmsg_nest_end(fmsg);
4406 if (err)
4407 return err;
4408
4409 return 0;
4410}
4411EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_end);
4412
573ed90a
AL		 4413int devlink_fmsg_binary_pair_nest_start(struct devlink_fmsg *fmsg,
4414 const char *name)
4415{
4416 int err;
4417
4418 err = devlink_fmsg_arr_pair_nest_start(fmsg, name);
4419 if (err)
4420 return err;
4421
4422 fmsg->putting_binary = true;
4423 return err;
4424}
4425EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_start);
4426
4427int devlink_fmsg_binary_pair_nest_end(struct devlink_fmsg *fmsg)
4428{
4429 if (!fmsg->putting_binary)
4430 return -EINVAL;
4431
4432 fmsg->putting_binary = false;
4433 return devlink_fmsg_arr_pair_nest_end(fmsg);
4434}
4435EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_end);
4436
1db64e87
EBE		 4437static int devlink_fmsg_put_value(struct devlink_fmsg *fmsg,
4438 const void *value, u16 value_len,
4439 u8 value_nla_type)
4440{
4441 struct devlink_fmsg_item *item;
4442
4443 if (value_len > DEVLINK_FMSG_MAX_SIZE)
4444 return -EMSGSIZE;
4445
4446 item = kzalloc(sizeof(*item) + value_len, GFP_KERNEL);
4447 if (!item)
4448 return -ENOMEM;
4449
4450 item->nla_type = value_nla_type;
4451 item->len = value_len;
4452 item->attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
4453 memcpy(&item->value, value, item->len);
4454 list_add_tail(&item->list, &fmsg->item_list);
4455
4456 return 0;
4457}
4458
4459int devlink_fmsg_bool_put(struct devlink_fmsg *fmsg, bool value)
4460{
573ed90a
AL		 4461 if (fmsg->putting_binary)
4462 return -EINVAL;
4463
1db64e87
EBE		 4464 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_FLAG);
4465}
4466EXPORT_SYMBOL_GPL(devlink_fmsg_bool_put);
4467
4468int devlink_fmsg_u8_put(struct devlink_fmsg *fmsg, u8 value)
4469{
573ed90a
AL		 4470 if (fmsg->putting_binary)
4471 return -EINVAL;
4472
1db64e87
EBE		 4473 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U8);
4474}
4475EXPORT_SYMBOL_GPL(devlink_fmsg_u8_put);
4476
4477int devlink_fmsg_u32_put(struct devlink_fmsg *fmsg, u32 value)
4478{
573ed90a
AL		 4479 if (fmsg->putting_binary)
4480 return -EINVAL;
4481
1db64e87
EBE		 4482 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U32);
4483}
4484EXPORT_SYMBOL_GPL(devlink_fmsg_u32_put);
4485
4486int devlink_fmsg_u64_put(struct devlink_fmsg *fmsg, u64 value)
4487{
573ed90a
AL		 4488 if (fmsg->putting_binary)
4489 return -EINVAL;
4490
1db64e87
EBE		 4491 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U64);
4492}
4493EXPORT_SYMBOL_GPL(devlink_fmsg_u64_put);
4494
4495int devlink_fmsg_string_put(struct devlink_fmsg *fmsg, const char *value)
4496{
573ed90a
AL		 4497 if (fmsg->putting_binary)
4498 return -EINVAL;
4499
1db64e87
EBE		 4500 return devlink_fmsg_put_value(fmsg, value, strlen(value) + 1,
4501 NLA_NUL_STRING);
4502}
4503EXPORT_SYMBOL_GPL(devlink_fmsg_string_put);
4504
573ed90a
AL		 4505int devlink_fmsg_binary_put(struct devlink_fmsg *fmsg, const void *value,
4506 u16 value_len)
1db64e87 4507{
573ed90a
AL		 4508 if (!fmsg->putting_binary)
4509 return -EINVAL;
4510
1db64e87
EBE		 4511 return devlink_fmsg_put_value(fmsg, value, value_len, NLA_BINARY);
4512}
573ed90a 4513EXPORT_SYMBOL_GPL(devlink_fmsg_binary_put);
1db64e87
EBE		 4514
4515int devlink_fmsg_bool_pair_put(struct devlink_fmsg *fmsg, const char *name,
4516 bool value)
4517{
4518 int err;
4519
4520 err = devlink_fmsg_pair_nest_start(fmsg, name);
4521 if (err)
4522 return err;
4523
4524 err = devlink_fmsg_bool_put(fmsg, value);
4525 if (err)
4526 return err;
4527
4528 err = devlink_fmsg_pair_nest_end(fmsg);
4529 if (err)
4530 return err;
4531
4532 return 0;
4533}
4534EXPORT_SYMBOL_GPL(devlink_fmsg_bool_pair_put);
4535
4536int devlink_fmsg_u8_pair_put(struct devlink_fmsg *fmsg, const char *name,
4537 u8 value)
4538{
4539 int err;
4540
4541 err = devlink_fmsg_pair_nest_start(fmsg, name);
4542 if (err)
4543 return err;
4544
4545 err = devlink_fmsg_u8_put(fmsg, value);
4546 if (err)
4547 return err;
4548
4549 err = devlink_fmsg_pair_nest_end(fmsg);
4550 if (err)
4551 return err;
4552
4553 return 0;
4554}
4555EXPORT_SYMBOL_GPL(devlink_fmsg_u8_pair_put);
4556
4557int devlink_fmsg_u32_pair_put(struct devlink_fmsg *fmsg, const char *name,
4558 u32 value)
4559{
4560 int err;
4561
4562 err = devlink_fmsg_pair_nest_start(fmsg, name);
4563 if (err)
4564 return err;
4565
4566 err = devlink_fmsg_u32_put(fmsg, value);
4567 if (err)
4568 return err;
4569
4570 err = devlink_fmsg_pair_nest_end(fmsg);
4571 if (err)
4572 return err;
4573
4574 return 0;
4575}
4576EXPORT_SYMBOL_GPL(devlink_fmsg_u32_pair_put);
4577
4578int devlink_fmsg_u64_pair_put(struct devlink_fmsg *fmsg, const char *name,
4579 u64 value)
4580{
4581 int err;
4582
4583 err = devlink_fmsg_pair_nest_start(fmsg, name);
4584 if (err)
4585 return err;
4586
4587 err = devlink_fmsg_u64_put(fmsg, value);
4588 if (err)
4589 return err;
4590
4591 err = devlink_fmsg_pair_nest_end(fmsg);
4592 if (err)
4593 return err;
4594
4595 return 0;
4596}
4597EXPORT_SYMBOL_GPL(devlink_fmsg_u64_pair_put);
4598
4599int devlink_fmsg_string_pair_put(struct devlink_fmsg *fmsg, const char *name,
4600 const char *value)
4601{
4602 int err;
4603
4604 err = devlink_fmsg_pair_nest_start(fmsg, name);
4605 if (err)
4606 return err;
4607
4608 err = devlink_fmsg_string_put(fmsg, value);
4609 if (err)
4610 return err;
4611
4612 err = devlink_fmsg_pair_nest_end(fmsg);
4613 if (err)
4614 return err;
4615
4616 return 0;
4617}
4618EXPORT_SYMBOL_GPL(devlink_fmsg_string_pair_put);
4619
4620int devlink_fmsg_binary_pair_put(struct devlink_fmsg *fmsg, const char *name,
e2cde864 4621 const void *value, u32 value_len)
1db64e87 4622{
e2cde864 4623 u32 data_size;
573ed90a 4624 int end_err;
e2cde864 4625 u32 offset;
1db64e87
EBE		 4626 int err;
4627
573ed90a 4628 err = devlink_fmsg_binary_pair_nest_start(fmsg, name);
1db64e87
EBE		 4629 if (err)
4630 return err;
4631
e2cde864
AL		 4632 for (offset = 0; offset < value_len; offset += data_size) {
4633 data_size = value_len - offset;
4634 if (data_size > DEVLINK_FMSG_MAX_SIZE)
4635 data_size = DEVLINK_FMSG_MAX_SIZE;
4636 err = devlink_fmsg_binary_put(fmsg, value + offset, data_size);
4637 if (err)
573ed90a
AL		 4638 break;
4639 /* Exit from loop with a break (instead of
4640 * return) to make sure putting_binary is turned off in
4641 * devlink_fmsg_binary_pair_nest_end
4642 */
e2cde864 4643 }
1db64e87 4644
573ed90a
AL		 4645 end_err = devlink_fmsg_binary_pair_nest_end(fmsg);
4646 if (end_err)
4647 err = end_err;
1db64e87 4648
573ed90a 4649 return err;
1db64e87
EBE		 4650}
4651EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_put);
4652
4653static int
4654devlink_fmsg_item_fill_type(struct devlink_fmsg_item *msg, struct sk_buff *skb)
4655{
4656 switch (msg->nla_type) {
4657 case NLA_FLAG:
4658 case NLA_U8:
4659 case NLA_U32:
4660 case NLA_U64:
4661 case NLA_NUL_STRING:
4662 case NLA_BINARY:
4663 return nla_put_u8(skb, DEVLINK_ATTR_FMSG_OBJ_VALUE_TYPE,
4664 msg->nla_type);
4665 default:
4666 return -EINVAL;
4667 }
4668}
4669
4670static int
4671devlink_fmsg_item_fill_data(struct devlink_fmsg_item *msg, struct sk_buff *skb)
4672{
4673 int attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
4674 u8 tmp;
4675
4676 switch (msg->nla_type) {
4677 case NLA_FLAG:
4678 /* Always provide flag data, regardless of its value */
4679 tmp = *(bool *) msg->value;
4680
4681 return nla_put_u8(skb, attrtype, tmp);
4682 case NLA_U8:
4683 return nla_put_u8(skb, attrtype, *(u8 *) msg->value);
4684 case NLA_U32:
4685 return nla_put_u32(skb, attrtype, *(u32 *) msg->value);
4686 case NLA_U64:
4687 return nla_put_u64_64bit(skb, attrtype, *(u64 *) msg->value,
4688 DEVLINK_ATTR_PAD);
4689 case NLA_NUL_STRING:
4690 return nla_put_string(skb, attrtype, (char *) &msg->value);
4691 case NLA_BINARY:
4692 return nla_put(skb, attrtype, msg->len, (void *) &msg->value);
4693 default:
4694 return -EINVAL;
4695 }
4696}
4697
4698static int
4699devlink_fmsg_prepare_skb(struct devlink_fmsg *fmsg, struct sk_buff *skb,
4700 int *start)
4701{
4702 struct devlink_fmsg_item *item;
4703 struct nlattr *fmsg_nlattr;
4704 int i = 0;
4705 int err;
4706
ae0be8de 4707 fmsg_nlattr = nla_nest_start_noflag(skb, DEVLINK_ATTR_FMSG);
1db64e87
EBE		 4708 if (!fmsg_nlattr)
4709 return -EMSGSIZE;
4710
4711 list_for_each_entry(item, &fmsg->item_list, list) {
4712 if (i < *start) {
4713 i++;
4714 continue;
4715 }
4716
4717 switch (item->attrtype) {
4718 case DEVLINK_ATTR_FMSG_OBJ_NEST_START:
4719 case DEVLINK_ATTR_FMSG_PAIR_NEST_START:
4720 case DEVLINK_ATTR_FMSG_ARR_NEST_START:
4721 case DEVLINK_ATTR_FMSG_NEST_END:
4722 err = nla_put_flag(skb, item->attrtype);
4723 break;
4724 case DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA:
4725 err = devlink_fmsg_item_fill_type(item, skb);
4726 if (err)
4727 break;
4728 err = devlink_fmsg_item_fill_data(item, skb);
4729 break;
4730 case DEVLINK_ATTR_FMSG_OBJ_NAME:
4731 err = nla_put_string(skb, item->attrtype,
4732 (char *) &item->value);
4733 break;
4734 default:
4735 err = -EINVAL;
4736 break;
4737 }
4738 if (!err)
4739 *start = ++i;
4740 else
4741 break;
4742 }
4743
4744 nla_nest_end(skb, fmsg_nlattr);
4745 return err;
4746}
4747
4748static int devlink_fmsg_snd(struct devlink_fmsg *fmsg,
4749 struct genl_info *info,
4750 enum devlink_command cmd, int flags)
4751{
4752 struct nlmsghdr *nlh;
4753 struct sk_buff *skb;
4754 bool last = false;
4755 int index = 0;
4756 void *hdr;
4757 int err;
4758
4759 while (!last) {
4760 int tmp_index = index;
4761
4762 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
4763 if (!skb)
4764 return -ENOMEM;
4765
4766 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
4767 &devlink_nl_family, flags | NLM_F_MULTI, cmd);
4768 if (!hdr) {
4769 err = -EMSGSIZE;
4770 goto nla_put_failure;
4771 }
4772
4773 err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
4774 if (!err)
4775 last = true;
4776 else if (err != -EMSGSIZE || tmp_index == index)
4777 goto nla_put_failure;
4778
4779 genlmsg_end(skb, hdr);
4780 err = genlmsg_reply(skb, info);
4781 if (err)
4782 return err;
4783 }
4784
4785 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
4786 if (!skb)
4787 return -ENOMEM;
4788 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
4789 NLMSG_DONE, 0, flags | NLM_F_MULTI);
4790 if (!nlh) {
4791 err = -EMSGSIZE;
4792 goto nla_put_failure;
4793 }
1db64e87 4794
fde55ea7 4795 return genlmsg_reply(skb, info);
1db64e87
EBE		 4796
4797nla_put_failure:
4798 nlmsg_free(skb);
4799 return err;
4800}
4801
e44ef4e4
AL		 4802static int devlink_fmsg_dumpit(struct devlink_fmsg *fmsg, struct sk_buff *skb,
4803 struct netlink_callback *cb,
4804 enum devlink_command cmd)
4805{
4806 int index = cb->args[0];
4807 int tmp_index = index;
4808 void *hdr;
4809 int err;
4810
4811 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
4812 &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI, cmd);
4813 if (!hdr) {
4814 err = -EMSGSIZE;
4815 goto nla_put_failure;
4816 }
4817
4818 err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
4819 if ((err && err != -EMSGSIZE) || tmp_index == index)
4820 goto nla_put_failure;
4821
4822 cb->args[0] = index;
4823 genlmsg_end(skb, hdr);
4824 return skb->len;
4825
4826nla_put_failure:
4827 genlmsg_cancel(skb, hdr);
4828 return err;
4829}
4830
a0bdcc59
EBE		 4831struct devlink_health_reporter {
4832 struct list_head list;
4833 void *priv;
4834 const struct devlink_health_reporter_ops *ops;
4835 struct devlink *devlink;
c8e1da0b
EBE		 4836 struct devlink_fmsg *dump_fmsg;
4837 struct mutex dump_lock; /* lock parallel read/write from dump buffers */
a0bdcc59
EBE		 4838 u64 graceful_period;
4839 bool auto_recover;
4840 u8 health_state;
c8e1da0b 4841 u64 dump_ts;
d279505b 4842 u64 dump_real_ts;
c8e1da0b
EBE		 4843 u64 error_count;
4844 u64 recovery_count;
4845 u64 last_recovery_ts;
b587bdaf 4846 refcount_t refcount;
c8e1da0b
EBE		 4847};
4848
a0bdcc59
EBE		 4849void *
4850devlink_health_reporter_priv(struct devlink_health_reporter *reporter)
4851{
4852 return reporter->priv;
4853}
4854EXPORT_SYMBOL_GPL(devlink_health_reporter_priv);
4855
4856static struct devlink_health_reporter *
4857devlink_health_reporter_find_by_name(struct devlink *devlink,
4858 const char *reporter_name)
4859{
4860 struct devlink_health_reporter *reporter;
4861
b587bdaf 4862 lockdep_assert_held(&devlink->reporters_lock);
a0bdcc59
EBE		 4863 list_for_each_entry(reporter, &devlink->reporter_list, list)
4864 if (!strcmp(reporter->ops->name, reporter_name))
4865 return reporter;
4866 return NULL;
4867}
4868
4869/**
4870 * devlink_health_reporter_create - create devlink health reporter
4871 *
4872 * @devlink: devlink
4873 * @ops: ops
4874 * @graceful_period: to avoid recovery loops, in msecs
4875 * @auto_recover: auto recover when error occurs
4876 * @priv: priv
4877 */
4878struct devlink_health_reporter *
4879devlink_health_reporter_create(struct devlink *devlink,
4880 const struct devlink_health_reporter_ops *ops,
4881 u64 graceful_period, bool auto_recover,
4882 void *priv)
4883{
4884 struct devlink_health_reporter *reporter;
4885
b587bdaf 4886 mutex_lock(&devlink->reporters_lock);
a0bdcc59
EBE		 4887 if (devlink_health_reporter_find_by_name(devlink, ops->name)) {
4888 reporter = ERR_PTR(-EEXIST);
4889 goto unlock;
4890 }
4891
4892 if (WARN_ON(auto_recover && !ops->recover) ||
4893 WARN_ON(graceful_period && !ops->recover)) {
4894 reporter = ERR_PTR(-EINVAL);
4895 goto unlock;
4896 }
4897
4898 reporter = kzalloc(sizeof(*reporter), GFP_KERNEL);
4899 if (!reporter) {
4900 reporter = ERR_PTR(-ENOMEM);
4901 goto unlock;
4902 }
4903
4904 reporter->priv = priv;
4905 reporter->ops = ops;
4906 reporter->devlink = devlink;
4907 reporter->graceful_period = graceful_period;
4908 reporter->auto_recover = auto_recover;
c8e1da0b 4909 mutex_init(&reporter->dump_lock);
b587bdaf 4910 refcount_set(&reporter->refcount, 1);
a0bdcc59
EBE		 4911 list_add_tail(&reporter->list, &devlink->reporter_list);
4912unlock:
b587bdaf 4913 mutex_unlock(&devlink->reporters_lock);
a0bdcc59
EBE		 4914 return reporter;
4915}
4916EXPORT_SYMBOL_GPL(devlink_health_reporter_create);
4917
4918/**
4919 * devlink_health_reporter_destroy - destroy devlink health reporter
4920 *
4921 * @reporter: devlink health reporter to destroy
4922 */
4923void
4924devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
4925{
b587bdaf 4926 mutex_lock(&reporter->devlink->reporters_lock);
a0bdcc59 4927 list_del(&reporter->list);
b587bdaf
MS		 4928 mutex_unlock(&reporter->devlink->reporters_lock);
4929 while (refcount_read(&reporter->refcount) > 1)
4930 msleep(100);
375cf8c6 4931 mutex_destroy(&reporter->dump_lock);
c8e1da0b
EBE		 4932 if (reporter->dump_fmsg)
4933 devlink_fmsg_free(reporter->dump_fmsg);
a0bdcc59
EBE		 4934 kfree(reporter);
4935}
4936EXPORT_SYMBOL_GPL(devlink_health_reporter_destroy);
4937
6ec8b6cd
MS		 4938static int
4939devlink_nl_health_reporter_fill(struct sk_buff *msg,
4940 struct devlink *devlink,
4941 struct devlink_health_reporter *reporter,
4942 enum devlink_command cmd, u32 portid,
4943 u32 seq, int flags)
4944{
4945 struct nlattr *reporter_attr;
4946 void *hdr;
4947
4948 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
4949 if (!hdr)
4950 return -EMSGSIZE;
4951
4952 if (devlink_nl_put_handle(msg, devlink))
4953 goto genlmsg_cancel;
4954
4955 reporter_attr = nla_nest_start_noflag(msg,
4956 DEVLINK_ATTR_HEALTH_REPORTER);
4957 if (!reporter_attr)
4958 goto genlmsg_cancel;
4959 if (nla_put_string(msg, DEVLINK_ATTR_HEALTH_REPORTER_NAME,
4960 reporter->ops->name))
4961 goto reporter_nest_cancel;
4962 if (nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_STATE,
4963 reporter->health_state))
4964 goto reporter_nest_cancel;
4965 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_ERR_COUNT,
4966 reporter->error_count, DEVLINK_ATTR_PAD))
4967 goto reporter_nest_cancel;
4968 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_RECOVER_COUNT,
4969 reporter->recovery_count, DEVLINK_ATTR_PAD))
4970 goto reporter_nest_cancel;
4971 if (reporter->ops->recover &&
4972 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD,
4973 reporter->graceful_period,
4974 DEVLINK_ATTR_PAD))
4975 goto reporter_nest_cancel;
4976 if (reporter->ops->recover &&
4977 nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER,
4978 reporter->auto_recover))
4979 goto reporter_nest_cancel;
4980 if (reporter->dump_fmsg &&
4981 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS,
4982 jiffies_to_msecs(reporter->dump_ts),
4983 DEVLINK_ATTR_PAD))
4984 goto reporter_nest_cancel;
4985 if (reporter->dump_fmsg &&
4986 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS_NS,
4987 reporter->dump_real_ts, DEVLINK_ATTR_PAD))
4988 goto reporter_nest_cancel;
4989
4990 nla_nest_end(msg, reporter_attr);
4991 genlmsg_end(msg, hdr);
4992 return 0;
4993
4994reporter_nest_cancel:
4995 nla_nest_end(msg, reporter_attr);
4996genlmsg_cancel:
4997 genlmsg_cancel(msg, hdr);
4998 return -EMSGSIZE;
4999}
5000
5001static void devlink_recover_notify(struct devlink_health_reporter *reporter,
5002 enum devlink_command cmd)
5003{
5004 struct sk_buff *msg;
5005 int err;
5006
5007 WARN_ON(cmd != DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
5008
5009 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5010 if (!msg)
5011 return;
5012
5013 err = devlink_nl_health_reporter_fill(msg, reporter->devlink,
5014 reporter, cmd, 0, 0, 0);
5015 if (err) {
5016 nlmsg_free(msg);
5017 return;
5018 }
5019
5020 genlmsg_multicast_netns(&devlink_nl_family,
5021 devlink_net(reporter->devlink),
5022 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
5023}
5024
6181e5cb
VG		 5025void
5026devlink_health_reporter_recovery_done(struct devlink_health_reporter *reporter)
5027{
5028 reporter->recovery_count++;
5029 reporter->last_recovery_ts = jiffies;
5030}
5031EXPORT_SYMBOL_GPL(devlink_health_reporter_recovery_done);
5032
c8e1da0b
EBE		 5033static int
5034devlink_health_reporter_recover(struct devlink_health_reporter *reporter,
e7a98105 5035 void *priv_ctx, struct netlink_ext_ack *extack)
c8e1da0b
EBE		 5036{
5037 int err;
5038
40281820
JP		 5039 if (reporter->health_state == DEVLINK_HEALTH_REPORTER_STATE_HEALTHY)
5040 return 0;
5041
c8e1da0b
EBE		 5042 if (!reporter->ops->recover)
5043 return -EOPNOTSUPP;
5044
e7a98105 5045 err = reporter->ops->recover(reporter, priv_ctx, extack);
c8e1da0b
EBE		 5046 if (err)
5047 return err;
5048
6181e5cb 5049 devlink_health_reporter_recovery_done(reporter);
c8e1da0b 5050 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_HEALTHY;
6ec8b6cd 5051 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
c8e1da0b
EBE		 5052
5053 return 0;
5054}
5055
5056static void
5057devlink_health_dump_clear(struct devlink_health_reporter *reporter)
5058{
5059 if (!reporter->dump_fmsg)
5060 return;
5061 devlink_fmsg_free(reporter->dump_fmsg);
5062 reporter->dump_fmsg = NULL;
5063}
5064
5065static int devlink_health_do_dump(struct devlink_health_reporter *reporter,
e7a98105
JP		 5066 void *priv_ctx,
5067 struct netlink_ext_ack *extack)
c8e1da0b
EBE		 5068{
5069 int err;
5070
5071 if (!reporter->ops->dump)
5072 return 0;
5073
5074 if (reporter->dump_fmsg)
5075 return 0;
5076
5077 reporter->dump_fmsg = devlink_fmsg_alloc();
5078 if (!reporter->dump_fmsg) {
5079 err = -ENOMEM;
5080 return err;
5081 }
5082
5083 err = devlink_fmsg_obj_nest_start(reporter->dump_fmsg);
5084 if (err)
5085 goto dump_err;
5086
5087 err = reporter->ops->dump(reporter, reporter->dump_fmsg,
e7a98105 5088 priv_ctx, extack);
c8e1da0b
EBE		 5089 if (err)
5090 goto dump_err;
5091
5092 err = devlink_fmsg_obj_nest_end(reporter->dump_fmsg);
5093 if (err)
5094 goto dump_err;
5095
5096 reporter->dump_ts = jiffies;
d279505b 5097 reporter->dump_real_ts = ktime_get_real_ns();
c8e1da0b
EBE		 5098
5099 return 0;
5100
5101dump_err:
5102 devlink_health_dump_clear(reporter);
5103 return err;
5104}
5105
5106int devlink_health_report(struct devlink_health_reporter *reporter,
5107 const char *msg, void *priv_ctx)
5108{
a0a21adb 5109 enum devlink_health_reporter_state prev_health_state;
c8e1da0b
EBE		 5110 struct devlink *devlink = reporter->devlink;
5111
5112 /* write a log message of the current error */
5113 WARN_ON(!msg);
5114 trace_devlink_health_report(devlink, reporter->ops->name, msg);
5115 reporter->error_count++;
a0a21adb
EBE		 5116 prev_health_state = reporter->health_state;
5117 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
6ec8b6cd 5118 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
c8e1da0b
EBE		 5119
5120 /* abort if the previous error wasn't recovered */
5121 if (reporter->auto_recover &&
a0a21adb 5122 (prev_health_state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY ||
c8e1da0b
EBE		 5123 jiffies - reporter->last_recovery_ts <
5124 msecs_to_jiffies(reporter->graceful_period))) {
5125 trace_devlink_health_recover_aborted(devlink,
5126 reporter->ops->name,
5127 reporter->health_state,
5128 jiffies -
5129 reporter->last_recovery_ts);
5130 return -ECANCELED;
5131 }
5132
5133 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
5134
5135 mutex_lock(&reporter->dump_lock);
5136 /* store current dump of current error, for later analysis */
e7a98105 5137 devlink_health_do_dump(reporter, priv_ctx, NULL);
c8e1da0b
EBE		 5138 mutex_unlock(&reporter->dump_lock);
5139
5140 if (reporter->auto_recover)
e7a98105
JP		 5141 return devlink_health_reporter_recover(reporter,
5142 priv_ctx, NULL);
c8e1da0b
EBE		 5143
5144 return 0;
5145}
5146EXPORT_SYMBOL_GPL(devlink_health_report);
5147
7afe335a 5148static struct devlink_health_reporter *
e44ef4e4
AL		 5149devlink_health_reporter_get_from_attrs(struct devlink *devlink,
5150 struct nlattr **attrs)
7afe335a 5151{
b587bdaf 5152 struct devlink_health_reporter *reporter;
7afe335a
EBE		 5153 char *reporter_name;
5154
e44ef4e4 5155 if (!attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME])
7afe335a
EBE		 5156 return NULL;
5157
e44ef4e4 5158 reporter_name = nla_data(attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME]);
b587bdaf
MS		 5159 mutex_lock(&devlink->reporters_lock);
5160 reporter = devlink_health_reporter_find_by_name(devlink, reporter_name);
5161 if (reporter)
5162 refcount_inc(&reporter->refcount);
5163 mutex_unlock(&devlink->reporters_lock);
5164 return reporter;
5165}
5166
e44ef4e4
AL		 5167static struct devlink_health_reporter *
5168devlink_health_reporter_get_from_info(struct devlink *devlink,
5169 struct genl_info *info)
5170{
5171 return devlink_health_reporter_get_from_attrs(devlink, info->attrs);
5172}
5173
5174static struct devlink_health_reporter *
5175devlink_health_reporter_get_from_cb(struct netlink_callback *cb)
5176{
ee85da53 5177 const struct genl_dumpit_info *info = genl_dumpit_info(cb);
e44ef4e4 5178 struct devlink_health_reporter *reporter;
ee85da53 5179 struct nlattr **attrs = info->attrs;
e44ef4e4 5180 struct devlink *devlink;
e44ef4e4
AL		 5181
5182 mutex_lock(&devlink_mutex);
5183 devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
5184 if (IS_ERR(devlink))
5185 goto unlock;
5186
5187 reporter = devlink_health_reporter_get_from_attrs(devlink, attrs);
5188 mutex_unlock(&devlink_mutex);
e44ef4e4
AL		 5189 return reporter;
5190unlock:
5191 mutex_unlock(&devlink_mutex);
e44ef4e4
AL		 5192 return NULL;
5193}
5194
b587bdaf
MS		 5195static void
5196devlink_health_reporter_put(struct devlink_health_reporter *reporter)
5197{
5198 refcount_dec(&reporter->refcount);
7afe335a
EBE		 5199}
5200
97ff3bd3
VG		 5201void
5202devlink_health_reporter_state_update(struct devlink_health_reporter *reporter,
5203 enum devlink_health_reporter_state state)
5204{
5205 if (WARN_ON(state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY &&
5206 state != DEVLINK_HEALTH_REPORTER_STATE_ERROR))
5207 return;
5208
5209 if (reporter->health_state == state)
5210 return;
5211
5212 reporter->health_state = state;
5213 trace_devlink_health_reporter_state_update(reporter->devlink,
5214 reporter->ops->name, state);
5215 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
5216}
5217EXPORT_SYMBOL_GPL(devlink_health_reporter_state_update);
5218
7afe335a
EBE		 5219static int devlink_nl_cmd_health_reporter_get_doit(struct sk_buff *skb,
5220 struct genl_info *info)
5221{
5222 struct devlink *devlink = info->user_ptr[0];
5223 struct devlink_health_reporter *reporter;
5224 struct sk_buff *msg;
5225 int err;
5226
5227 reporter = devlink_health_reporter_get_from_info(devlink, info);
5228 if (!reporter)
5229 return -EINVAL;
5230
5231 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
b587bdaf
MS		 5232 if (!msg) {
5233 err = -ENOMEM;
5234 goto out;
5235 }
7afe335a
EBE		 5236
5237 err = devlink_nl_health_reporter_fill(msg, devlink, reporter,
5238 DEVLINK_CMD_HEALTH_REPORTER_GET,
5239 info->snd_portid, info->snd_seq,
5240 0);
5241 if (err) {
5242 nlmsg_free(msg);
b587bdaf 5243 goto out;
7afe335a
EBE		 5244 }
5245
b587bdaf
MS		 5246 err = genlmsg_reply(msg, info);
5247out:
5248 devlink_health_reporter_put(reporter);
5249 return err;
7afe335a
EBE		 5250}
5251
5252static int
5253devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg,
5254 struct netlink_callback *cb)
5255{
5256 struct devlink_health_reporter *reporter;
5257 struct devlink *devlink;
5258 int start = cb->args[0];
5259 int idx = 0;
5260 int err;
5261
5262 mutex_lock(&devlink_mutex);
5263 list_for_each_entry(devlink, &devlink_list, list) {
5264 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
5265 continue;
b587bdaf 5266 mutex_lock(&devlink->reporters_lock);
7afe335a
EBE		 5267 list_for_each_entry(reporter, &devlink->reporter_list,
5268 list) {
5269 if (idx < start) {
5270 idx++;
5271 continue;
5272 }
5273 err = devlink_nl_health_reporter_fill(msg, devlink,
5274 reporter,
5275 DEVLINK_CMD_HEALTH_REPORTER_GET,
5276 NETLINK_CB(cb->skb).portid,
5277 cb->nlh->nlmsg_seq,
5278 NLM_F_MULTI);
5279 if (err) {
b587bdaf 5280 mutex_unlock(&devlink->reporters_lock);
7afe335a
EBE		 5281 goto out;
5282 }
5283 idx++;
5284 }
b587bdaf 5285 mutex_unlock(&devlink->reporters_lock);
7afe335a
EBE		 5286 }
5287out:
5288 mutex_unlock(&devlink_mutex);
5289
5290 cb->args[0] = idx;
5291 return msg->len;
5292}
5293
a1e55ec0
EBE		 5294static int
5295devlink_nl_cmd_health_reporter_set_doit(struct sk_buff *skb,
5296 struct genl_info *info)
5297{
5298 struct devlink *devlink = info->user_ptr[0];
5299 struct devlink_health_reporter *reporter;
b587bdaf 5300 int err;
a1e55ec0
EBE		 5301
5302 reporter = devlink_health_reporter_get_from_info(devlink, info);
5303 if (!reporter)
5304 return -EINVAL;
5305
5306 if (!reporter->ops->recover &&
5307 (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] ||
b587bdaf
MS		 5308 info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])) {
5309 err = -EOPNOTSUPP;
5310 goto out;
5311 }
a1e55ec0
EBE		 5312
5313 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD])
5314 reporter->graceful_period =
5315 nla_get_u64(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD]);
5316
5317 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])
5318 reporter->auto_recover =
5319 nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER]);
5320
b587bdaf 5321 devlink_health_reporter_put(reporter);
a1e55ec0 5322 return 0;
b587bdaf
MS		 5323out:
5324 devlink_health_reporter_put(reporter);
5325 return err;
a1e55ec0
EBE		 5326}
5327
20a0943a
EBE		 5328static int devlink_nl_cmd_health_reporter_recover_doit(struct sk_buff *skb,
5329 struct genl_info *info)
5330{
5331 struct devlink *devlink = info->user_ptr[0];
5332 struct devlink_health_reporter *reporter;
b587bdaf 5333 int err;
20a0943a
EBE		 5334
5335 reporter = devlink_health_reporter_get_from_info(devlink, info);
5336 if (!reporter)
5337 return -EINVAL;
5338
e7a98105 5339 err = devlink_health_reporter_recover(reporter, NULL, info->extack);
b587bdaf
MS		 5340
5341 devlink_health_reporter_put(reporter);
5342 return err;
20a0943a
EBE		 5343}
5344
fca42a27
EBE		 5345static int devlink_nl_cmd_health_reporter_diagnose_doit(struct sk_buff *skb,
5346 struct genl_info *info)
5347{
5348 struct devlink *devlink = info->user_ptr[0];
5349 struct devlink_health_reporter *reporter;
5350 struct devlink_fmsg *fmsg;
5351 int err;
5352
5353 reporter = devlink_health_reporter_get_from_info(devlink, info);
5354 if (!reporter)
5355 return -EINVAL;
5356
b587bdaf
MS		 5357 if (!reporter->ops->diagnose) {
5358 devlink_health_reporter_put(reporter);
fca42a27 5359 return -EOPNOTSUPP;
b587bdaf 5360 }
fca42a27
EBE		 5361
5362 fmsg = devlink_fmsg_alloc();
b587bdaf
MS		 5363 if (!fmsg) {
5364 devlink_health_reporter_put(reporter);
fca42a27 5365 return -ENOMEM;
b587bdaf 5366 }
fca42a27
EBE		 5367
5368 err = devlink_fmsg_obj_nest_start(fmsg);
5369 if (err)
5370 goto out;
5371
e7a98105 5372 err = reporter->ops->diagnose(reporter, fmsg, info->extack);
fca42a27
EBE		 5373 if (err)
5374 goto out;
5375
5376 err = devlink_fmsg_obj_nest_end(fmsg);
5377 if (err)
5378 goto out;
5379
5380 err = devlink_fmsg_snd(fmsg, info,
5381 DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE, 0);
5382
5383out:
5384 devlink_fmsg_free(fmsg);
b587bdaf 5385 devlink_health_reporter_put(reporter);
fca42a27
EBE		 5386 return err;
5387}
5388
e44ef4e4
AL		 5389static int
5390devlink_nl_cmd_health_reporter_dump_get_dumpit(struct sk_buff *skb,
5391 struct netlink_callback *cb)
35455e23 5392{
35455e23 5393 struct devlink_health_reporter *reporter;
e44ef4e4 5394 u64 start = cb->args[0];
35455e23
EBE		 5395 int err;
5396
e44ef4e4 5397 reporter = devlink_health_reporter_get_from_cb(cb);
35455e23
EBE		 5398 if (!reporter)
5399 return -EINVAL;
5400
b587bdaf 5401 if (!reporter->ops->dump) {
e44ef4e4
AL		 5402 err = -EOPNOTSUPP;
5403 goto out;
b587bdaf 5404 }
35455e23 5405 mutex_lock(&reporter->dump_lock);
e44ef4e4 5406 if (!start) {
e7a98105 5407 err = devlink_health_do_dump(reporter, NULL, cb->extack);
e44ef4e4
AL		 5408 if (err)
5409 goto unlock;
5410 cb->args[1] = reporter->dump_ts;
5411 }
5412 if (!reporter->dump_fmsg || cb->args[1] != reporter->dump_ts) {
5413 NL_SET_ERR_MSG_MOD(cb->extack, "Dump trampled, please retry");
5414 err = -EAGAIN;
5415 goto unlock;
5416 }
35455e23 5417
e44ef4e4
AL		 5418 err = devlink_fmsg_dumpit(reporter->dump_fmsg, skb, cb,
5419 DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET);
5420unlock:
35455e23 5421 mutex_unlock(&reporter->dump_lock);
e44ef4e4 5422out:
b587bdaf 5423 devlink_health_reporter_put(reporter);
35455e23
EBE		 5424 return err;
5425}
5426
5427static int
5428devlink_nl_cmd_health_reporter_dump_clear_doit(struct sk_buff *skb,
5429 struct genl_info *info)
5430{
5431 struct devlink *devlink = info->user_ptr[0];
5432 struct devlink_health_reporter *reporter;
5433
5434 reporter = devlink_health_reporter_get_from_info(devlink, info);
5435 if (!reporter)
5436 return -EINVAL;
5437
b587bdaf
MS		 5438 if (!reporter->ops->dump) {
5439 devlink_health_reporter_put(reporter);
35455e23 5440 return -EOPNOTSUPP;
b587bdaf 5441 }
35455e23
EBE		 5442
5443 mutex_lock(&reporter->dump_lock);
5444 devlink_health_dump_clear(reporter);
5445 mutex_unlock(&reporter->dump_lock);
b587bdaf 5446 devlink_health_reporter_put(reporter);
35455e23
EBE		 5447 return 0;
5448}
5449
0f420b6c
IS		 5450struct devlink_stats {
5451 u64 rx_bytes;
5452 u64 rx_packets;
5453 struct u64_stats_sync syncp;
5454};
5455
5456/**
5457 * struct devlink_trap_group_item - Packet trap group attributes.
5458 * @group: Immutable packet trap group attributes.
5459 * @refcount: Number of trap items using the group.
5460 * @list: trap_group_list member.
5461 * @stats: Trap group statistics.
5462 *
5463 * Describes packet trap group attributes. Created by devlink during trap
5464 * registration.
5465 */
5466struct devlink_trap_group_item {
5467 const struct devlink_trap_group *group;
5468 refcount_t refcount;
5469 struct list_head list;
5470 struct devlink_stats __percpu *stats;
5471};
5472
5473/**
5474 * struct devlink_trap_item - Packet trap attributes.
5475 * @trap: Immutable packet trap attributes.
5476 * @group_item: Associated group item.
5477 * @list: trap_list member.
5478 * @action: Trap action.
5479 * @stats: Trap statistics.
5480 * @priv: Driver private information.
5481 *
5482 * Describes both mutable and immutable packet trap attributes. Created by
5483 * devlink during trap registration and used for all trap related operations.
5484 */
5485struct devlink_trap_item {
5486 const struct devlink_trap *trap;
5487 struct devlink_trap_group_item *group_item;
5488 struct list_head list;
5489 enum devlink_trap_action action;
5490 struct devlink_stats __percpu *stats;
5491 void *priv;
5492};
5493
5494static struct devlink_trap_item *
5495devlink_trap_item_lookup(struct devlink *devlink, const char *name)
5496{
5497 struct devlink_trap_item *trap_item;
5498
5499 list_for_each_entry(trap_item, &devlink->trap_list, list) {
5500 if (!strcmp(trap_item->trap->name, name))
5501 return trap_item;
5502 }
5503
5504 return NULL;
5505}
5506
5507static struct devlink_trap_item *
5508devlink_trap_item_get_from_info(struct devlink *devlink,
5509 struct genl_info *info)
5510{
5511 struct nlattr *attr;
5512
5513 if (!info->attrs[DEVLINK_ATTR_TRAP_NAME])
5514 return NULL;
5515 attr = info->attrs[DEVLINK_ATTR_TRAP_NAME];
5516
5517 return devlink_trap_item_lookup(devlink, nla_data(attr));
5518}
5519
5520static int
5521devlink_trap_action_get_from_info(struct genl_info *info,
5522 enum devlink_trap_action *p_trap_action)
5523{
5524 u8 val;
5525
5526 val = nla_get_u8(info->attrs[DEVLINK_ATTR_TRAP_ACTION]);
5527 switch (val) {
5528 case DEVLINK_TRAP_ACTION_DROP: /* fall-through */
5529 case DEVLINK_TRAP_ACTION_TRAP:
5530 *p_trap_action = val;
5531 break;
5532 default:
5533 return -EINVAL;
5534 }
5535
5536 return 0;
5537}
5538
5539static int devlink_trap_metadata_put(struct sk_buff *msg,
5540 const struct devlink_trap *trap)
5541{
5542 struct nlattr *attr;
5543
5544 attr = nla_nest_start(msg, DEVLINK_ATTR_TRAP_METADATA);
5545 if (!attr)
5546 return -EMSGSIZE;
5547
5548 if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_IN_PORT) &&
5549 nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_IN_PORT))
5550 goto nla_put_failure;
85b0589e
JP		 5551 if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_FA_COOKIE) &&
5552 nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_FA_COOKIE))
5553 goto nla_put_failure;
0f420b6c
IS		 5554
5555 nla_nest_end(msg, attr);
5556
5557 return 0;
5558
5559nla_put_failure:
5560 nla_nest_cancel(msg, attr);
5561 return -EMSGSIZE;
5562}
5563
5564static void devlink_trap_stats_read(struct devlink_stats __percpu *trap_stats,
5565 struct devlink_stats *stats)
5566{
5567 int i;
5568
5569 memset(stats, 0, sizeof(*stats));
5570 for_each_possible_cpu(i) {
5571 struct devlink_stats *cpu_stats;
5572 u64 rx_packets, rx_bytes;
5573 unsigned int start;
5574
5575 cpu_stats = per_cpu_ptr(trap_stats, i);
5576 do {
5577 start = u64_stats_fetch_begin_irq(&cpu_stats->syncp);
5578 rx_packets = cpu_stats->rx_packets;
5579 rx_bytes = cpu_stats->rx_bytes;
5580 } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start));
5581
5582 stats->rx_packets += rx_packets;
5583 stats->rx_bytes += rx_bytes;
5584 }
5585}
5586
5587static int devlink_trap_stats_put(struct sk_buff *msg,
5588 struct devlink_stats __percpu *trap_stats)
5589{
5590 struct devlink_stats stats;
5591 struct nlattr *attr;
5592
5593 devlink_trap_stats_read(trap_stats, &stats);
5594
5595 attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
5596 if (!attr)
5597 return -EMSGSIZE;
5598
5599 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_PACKETS,
5600 stats.rx_packets, DEVLINK_ATTR_PAD))
5601 goto nla_put_failure;
5602
5603 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_BYTES,
5604 stats.rx_bytes, DEVLINK_ATTR_PAD))
5605 goto nla_put_failure;
5606
5607 nla_nest_end(msg, attr);
5608
5609 return 0;
5610
5611nla_put_failure:
5612 nla_nest_cancel(msg, attr);
5613 return -EMSGSIZE;
5614}
5615
5616static int devlink_nl_trap_fill(struct sk_buff *msg, struct devlink *devlink,
5617 const struct devlink_trap_item *trap_item,
5618 enum devlink_command cmd, u32 portid, u32 seq,
5619 int flags)
5620{
5621 struct devlink_trap_group_item *group_item = trap_item->group_item;
5622 void *hdr;
5623 int err;
5624
5625 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
5626 if (!hdr)
5627 return -EMSGSIZE;
5628
5629 if (devlink_nl_put_handle(msg, devlink))
5630 goto nla_put_failure;
5631
5632 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
5633 group_item->group->name))
5634 goto nla_put_failure;
5635
5636 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_NAME, trap_item->trap->name))
5637 goto nla_put_failure;
5638
5639 if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_TYPE, trap_item->trap->type))
5640 goto nla_put_failure;
5641
5642 if (trap_item->trap->generic &&
5643 nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
5644 goto nla_put_failure;
5645
5646 if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_ACTION, trap_item->action))
5647 goto nla_put_failure;
5648
5649 err = devlink_trap_metadata_put(msg, trap_item->trap);
5650 if (err)
5651 goto nla_put_failure;
5652
5653 err = devlink_trap_stats_put(msg, trap_item->stats);
5654 if (err)
5655 goto nla_put_failure;
5656
5657 genlmsg_end(msg, hdr);
5658
5659 return 0;
5660
5661nla_put_failure:
5662 genlmsg_cancel(msg, hdr);
5663 return -EMSGSIZE;
5664}
5665
5666static int devlink_nl_cmd_trap_get_doit(struct sk_buff *skb,
5667 struct genl_info *info)
5668{
5669 struct netlink_ext_ack *extack = info->extack;
5670 struct devlink *devlink = info->user_ptr[0];
5671 struct devlink_trap_item *trap_item;
5672 struct sk_buff *msg;
5673 int err;
5674
5675 if (list_empty(&devlink->trap_list))
5676 return -EOPNOTSUPP;
5677
5678 trap_item = devlink_trap_item_get_from_info(devlink, info);
5679 if (!trap_item) {
5680 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
5681 return -ENOENT;
5682 }
5683
5684 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5685 if (!msg)
5686 return -ENOMEM;
5687
5688 err = devlink_nl_trap_fill(msg, devlink, trap_item,
5689 DEVLINK_CMD_TRAP_NEW, info->snd_portid,
5690 info->snd_seq, 0);
5691 if (err)
5692 goto err_trap_fill;
5693
5694 return genlmsg_reply(msg, info);
5695
5696err_trap_fill:
5697 nlmsg_free(msg);
5698 return err;
5699}
5700
5701static int devlink_nl_cmd_trap_get_dumpit(struct sk_buff *msg,
5702 struct netlink_callback *cb)
5703{
5704 struct devlink_trap_item *trap_item;
5705 struct devlink *devlink;
5706 int start = cb->args[0];
5707 int idx = 0;
5708 int err;
5709
5710 mutex_lock(&devlink_mutex);
5711 list_for_each_entry(devlink, &devlink_list, list) {
5712 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
5713 continue;
5714 mutex_lock(&devlink->lock);
5715 list_for_each_entry(trap_item, &devlink->trap_list, list) {
5716 if (idx < start) {
5717 idx++;
5718 continue;
5719 }
5720 err = devlink_nl_trap_fill(msg, devlink, trap_item,
5721 DEVLINK_CMD_TRAP_NEW,
5722 NETLINK_CB(cb->skb).portid,
5723 cb->nlh->nlmsg_seq,
5724 NLM_F_MULTI);
5725 if (err) {
5726 mutex_unlock(&devlink->lock);
5727 goto out;
5728 }
5729 idx++;
5730 }
5731 mutex_unlock(&devlink->lock);
5732 }
5733out:
5734 mutex_unlock(&devlink_mutex);
5735
5736 cb->args[0] = idx;
5737 return msg->len;
5738}
5739
5740static int __devlink_trap_action_set(struct devlink *devlink,
5741 struct devlink_trap_item *trap_item,
5742 enum devlink_trap_action trap_action,
5743 struct netlink_ext_ack *extack)
5744{
5745 int err;
5746
5747 if (trap_item->action != trap_action &&
5748 trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP) {
5749 NL_SET_ERR_MSG_MOD(extack, "Cannot change action of non-drop traps. Skipping");
5750 return 0;
5751 }
5752
5753 err = devlink->ops->trap_action_set(devlink, trap_item->trap,
5754 trap_action);
5755 if (err)
5756 return err;
5757
5758 trap_item->action = trap_action;
5759
5760 return 0;
5761}
5762
5763static int devlink_trap_action_set(struct devlink *devlink,
5764 struct devlink_trap_item *trap_item,
5765 struct genl_info *info)
5766{
5767 enum devlink_trap_action trap_action;
5768 int err;
5769
5770 if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
5771 return 0;
5772
5773 err = devlink_trap_action_get_from_info(info, &trap_action);
5774 if (err) {
5775 NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
5776 return -EINVAL;
5777 }
5778
5779 return __devlink_trap_action_set(devlink, trap_item, trap_action,
5780 info->extack);
5781}
5782
5783static int devlink_nl_cmd_trap_set_doit(struct sk_buff *skb,
5784 struct genl_info *info)
5785{
5786 struct netlink_ext_ack *extack = info->extack;
5787 struct devlink *devlink = info->user_ptr[0];
5788 struct devlink_trap_item *trap_item;
5789 int err;
5790
5791 if (list_empty(&devlink->trap_list))
5792 return -EOPNOTSUPP;
5793
5794 trap_item = devlink_trap_item_get_from_info(devlink, info);
5795 if (!trap_item) {
5796 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
5797 return -ENOENT;
5798 }
5799
5800 err = devlink_trap_action_set(devlink, trap_item, info);
5801 if (err)
5802 return err;
5803
5804 return 0;
5805}
5806
5807static struct devlink_trap_group_item *
5808devlink_trap_group_item_lookup(struct devlink *devlink, const char *name)
5809{
5810 struct devlink_trap_group_item *group_item;
5811
5812 list_for_each_entry(group_item, &devlink->trap_group_list, list) {
5813 if (!strcmp(group_item->group->name, name))
5814 return group_item;
5815 }
5816
5817 return NULL;
5818}
5819
5820static struct devlink_trap_group_item *
5821devlink_trap_group_item_get_from_info(struct devlink *devlink,
5822 struct genl_info *info)
5823{
5824 char *name;
5825
5826 if (!info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME])
5827 return NULL;
5828 name = nla_data(info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME]);
5829
5830 return devlink_trap_group_item_lookup(devlink, name);
5831}
5832
5833static int
5834devlink_nl_trap_group_fill(struct sk_buff *msg, struct devlink *devlink,
5835 const struct devlink_trap_group_item *group_item,
5836 enum devlink_command cmd, u32 portid, u32 seq,
5837 int flags)
5838{
5839 void *hdr;
5840 int err;
5841
5842 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
5843 if (!hdr)
5844 return -EMSGSIZE;
5845
5846 if (devlink_nl_put_handle(msg, devlink))
5847 goto nla_put_failure;
5848
5849 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
5850 group_item->group->name))
5851 goto nla_put_failure;
5852
5853 if (group_item->group->generic &&
5854 nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
5855 goto nla_put_failure;
5856
5857 err = devlink_trap_stats_put(msg, group_item->stats);
5858 if (err)
5859 goto nla_put_failure;
5860
5861 genlmsg_end(msg, hdr);
5862
5863 return 0;
5864
5865nla_put_failure:
5866 genlmsg_cancel(msg, hdr);
5867 return -EMSGSIZE;
5868}
5869
5870static int devlink_nl_cmd_trap_group_get_doit(struct sk_buff *skb,
5871 struct genl_info *info)
5872{
5873 struct netlink_ext_ack *extack = info->extack;
5874 struct devlink *devlink = info->user_ptr[0];
5875 struct devlink_trap_group_item *group_item;
5876 struct sk_buff *msg;
5877 int err;
5878
5879 if (list_empty(&devlink->trap_group_list))
5880 return -EOPNOTSUPP;
5881
5882 group_item = devlink_trap_group_item_get_from_info(devlink, info);
5883 if (!group_item) {
5884 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
5885 return -ENOENT;
5886 }
5887
5888 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5889 if (!msg)
5890 return -ENOMEM;
5891
5892 err = devlink_nl_trap_group_fill(msg, devlink, group_item,
5893 DEVLINK_CMD_TRAP_GROUP_NEW,
5894 info->snd_portid, info->snd_seq, 0);
5895 if (err)
5896 goto err_trap_group_fill;
5897
5898 return genlmsg_reply(msg, info);
5899
5900err_trap_group_fill:
5901 nlmsg_free(msg);
5902 return err;
5903}
5904
5905static int devlink_nl_cmd_trap_group_get_dumpit(struct sk_buff *msg,
5906 struct netlink_callback *cb)
5907{
5908 enum devlink_command cmd = DEVLINK_CMD_TRAP_GROUP_NEW;
5909 struct devlink_trap_group_item *group_item;
5910 u32 portid = NETLINK_CB(cb->skb).portid;
5911 struct devlink *devlink;
5912 int start = cb->args[0];
5913 int idx = 0;
5914 int err;
5915
5916 mutex_lock(&devlink_mutex);
5917 list_for_each_entry(devlink, &devlink_list, list) {
5918 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
5919 continue;
5920 mutex_lock(&devlink->lock);
5921 list_for_each_entry(group_item, &devlink->trap_group_list,
5922 list) {
5923 if (idx < start) {
5924 idx++;
5925 continue;
5926 }
5927 err = devlink_nl_trap_group_fill(msg, devlink,
5928 group_item, cmd,
5929 portid,
5930 cb->nlh->nlmsg_seq,
5931 NLM_F_MULTI);
5932 if (err) {
5933 mutex_unlock(&devlink->lock);
5934 goto out;
5935 }
5936 idx++;
5937 }
5938 mutex_unlock(&devlink->lock);
5939 }
5940out:
5941 mutex_unlock(&devlink_mutex);
5942
5943 cb->args[0] = idx;
5944 return msg->len;
5945}
5946
5947static int
5948__devlink_trap_group_action_set(struct devlink *devlink,
5949 struct devlink_trap_group_item *group_item,
5950 enum devlink_trap_action trap_action,
5951 struct netlink_ext_ack *extack)
5952{
5953 const char *group_name = group_item->group->name;
5954 struct devlink_trap_item *trap_item;
5955 int err;
5956
5957 list_for_each_entry(trap_item, &devlink->trap_list, list) {
5958 if (strcmp(trap_item->trap->group.name, group_name))
5959 continue;
5960 err = __devlink_trap_action_set(devlink, trap_item,
5961 trap_action, extack);
5962 if (err)
5963 return err;
5964 }
5965
5966 return 0;
5967}
5968
5969static int
5970devlink_trap_group_action_set(struct devlink *devlink,
5971 struct devlink_trap_group_item *group_item,
5972 struct genl_info *info)
5973{
5974 enum devlink_trap_action trap_action;
5975 int err;
5976
5977 if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
5978 return 0;
5979
5980 err = devlink_trap_action_get_from_info(info, &trap_action);
5981 if (err) {
5982 NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
5983 return -EINVAL;
5984 }
5985
5986 err = __devlink_trap_group_action_set(devlink, group_item, trap_action,
5987 info->extack);
5988 if (err)
5989 return err;
5990
5991 return 0;
5992}
5993
5994static int devlink_nl_cmd_trap_group_set_doit(struct sk_buff *skb,
5995 struct genl_info *info)
5996{
5997 struct netlink_ext_ack *extack = info->extack;
5998 struct devlink *devlink = info->user_ptr[0];
5999 struct devlink_trap_group_item *group_item;
6000 int err;
6001
6002 if (list_empty(&devlink->trap_group_list))
6003 return -EOPNOTSUPP;
6004
6005 group_item = devlink_trap_group_item_get_from_info(devlink, info);
6006 if (!group_item) {
6007 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
6008 return -ENOENT;
6009 }
6010
6011 err = devlink_trap_group_action_set(devlink, group_item, info);
6012 if (err)
6013 return err;
6014
6015 return 0;
6016}
6017
bfcd3a46
JP		 6018static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = {
6019 [DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING },
6020 [DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING },
6021 [DEVLINK_ATTR_PORT_INDEX] = { .type = NLA_U32 },
6022 [DEVLINK_ATTR_PORT_TYPE] = { .type = NLA_U16 },
6023 [DEVLINK_ATTR_PORT_SPLIT_COUNT] = { .type = NLA_U32 },
bf797471
JP		 6024 [DEVLINK_ATTR_SB_INDEX] = { .type = NLA_U32 },
6025 [DEVLINK_ATTR_SB_POOL_INDEX] = { .type = NLA_U16 },
6026 [DEVLINK_ATTR_SB_POOL_TYPE] = { .type = NLA_U8 },
6027 [DEVLINK_ATTR_SB_POOL_SIZE] = { .type = NLA_U32 },
6028 [DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE] = { .type = NLA_U8 },
6029 [DEVLINK_ATTR_SB_THRESHOLD] = { .type = NLA_U32 },
6030 [DEVLINK_ATTR_SB_TC_INDEX] = { .type = NLA_U16 },
08f4b591 6031 [DEVLINK_ATTR_ESWITCH_MODE] = { .type = NLA_U16 },
59bfde01 6032 [DEVLINK_ATTR_ESWITCH_INLINE_MODE] = { .type = NLA_U8 },
f43e9b06 6033 [DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = { .type = NLA_U8 },
1555d204
AS		 6034 [DEVLINK_ATTR_DPIPE_TABLE_NAME] = { .type = NLA_NUL_STRING },
6035 [DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED] = { .type = NLA_U8 },
d9f9b9a4
AS		 6036 [DEVLINK_ATTR_RESOURCE_ID] = { .type = NLA_U64},
6037 [DEVLINK_ATTR_RESOURCE_SIZE] = { .type = NLA_U64},
e3b7ca18
MS		 6038 [DEVLINK_ATTR_PARAM_NAME] = { .type = NLA_NUL_STRING },
6039 [DEVLINK_ATTR_PARAM_TYPE] = { .type = NLA_U8 },
6040 [DEVLINK_ATTR_PARAM_VALUE_CMODE] = { .type = NLA_U8 },
d8db7ea5 6041 [DEVLINK_ATTR_REGION_NAME] = { .type = NLA_NUL_STRING },
866319bb 6042 [DEVLINK_ATTR_REGION_SNAPSHOT_ID] = { .type = NLA_U32 },
ff3b63b8
JK		 6043 [DEVLINK_ATTR_REGION_CHUNK_ADDR] = { .type = NLA_U64 },
6044 [DEVLINK_ATTR_REGION_CHUNK_LEN] = { .type = NLA_U64 },
7afe335a 6045 [DEVLINK_ATTR_HEALTH_REPORTER_NAME] = { .type = NLA_NUL_STRING },
a1e55ec0
EBE		 6046 [DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] = { .type = NLA_U64 },
6047 [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER] = { .type = NLA_U8 },
76726ccb
JK		 6048 [DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME] = { .type = NLA_NUL_STRING },
6049 [DEVLINK_ATTR_FLASH_UPDATE_COMPONENT] = { .type = NLA_NUL_STRING },
0f420b6c
IS		 6050 [DEVLINK_ATTR_TRAP_NAME] = { .type = NLA_NUL_STRING },
6051 [DEVLINK_ATTR_TRAP_ACTION] = { .type = NLA_U8 },
6052 [DEVLINK_ATTR_TRAP_GROUP_NAME] = { .type = NLA_NUL_STRING },
070c63f2
JP		 6053 [DEVLINK_ATTR_NETNS_PID] = { .type = NLA_U32 },
6054 [DEVLINK_ATTR_NETNS_FD] = { .type = NLA_U32 },
6055 [DEVLINK_ATTR_NETNS_ID] = { .type = NLA_U32 },
bfcd3a46
JP		 6056};
6057
6058static const struct genl_ops devlink_nl_ops[] = {
6059 {
6060 .cmd = DEVLINK_CMD_GET,
ef6243ac 6061 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46
JP		 6062 .doit = devlink_nl_cmd_get_doit,
6063 .dumpit = devlink_nl_cmd_get_dumpit,
1fc2257e 6064 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
bfcd3a46
JP		 6065 /* can be retrieved by unprivileged users */
6066 },
6067 {
6068 .cmd = DEVLINK_CMD_PORT_GET,
ef6243ac 6069 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46
JP		 6070 .doit = devlink_nl_cmd_port_get_doit,
6071 .dumpit = devlink_nl_cmd_port_get_dumpit,
bfcd3a46
JP		 6072 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
6073 /* can be retrieved by unprivileged users */
6074 },
6075 {
6076 .cmd = DEVLINK_CMD_PORT_SET,
ef6243ac 6077 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46 6078 .doit = devlink_nl_cmd_port_set_doit,
bfcd3a46
JP		 6079 .flags = GENL_ADMIN_PERM,
6080 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
6081 },
6082 {
6083 .cmd = DEVLINK_CMD_PORT_SPLIT,
ef6243ac 6084 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46 6085 .doit = devlink_nl_cmd_port_split_doit,
bfcd3a46 6086 .flags = GENL_ADMIN_PERM,
2406e7e5
AS		 6087 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6088 DEVLINK_NL_FLAG_NO_LOCK,
bfcd3a46
JP		 6089 },
6090 {
6091 .cmd = DEVLINK_CMD_PORT_UNSPLIT,
ef6243ac 6092 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46 6093 .doit = devlink_nl_cmd_port_unsplit_doit,
bfcd3a46 6094 .flags = GENL_ADMIN_PERM,
2406e7e5
AS		 6095 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6096 DEVLINK_NL_FLAG_NO_LOCK,
bfcd3a46 6097 },
bf797471
JP		 6098 {
6099 .cmd = DEVLINK_CMD_SB_GET,
ef6243ac 6100 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471
JP		 6101 .doit = devlink_nl_cmd_sb_get_doit,
6102 .dumpit = devlink_nl_cmd_sb_get_dumpit,
bf797471
JP		 6103 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6104 DEVLINK_NL_FLAG_NEED_SB,
6105 /* can be retrieved by unprivileged users */
6106 },
6107 {
6108 .cmd = DEVLINK_CMD_SB_POOL_GET,
ef6243ac 6109 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471
JP		 6110 .doit = devlink_nl_cmd_sb_pool_get_doit,
6111 .dumpit = devlink_nl_cmd_sb_pool_get_dumpit,
bf797471
JP		 6112 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6113 DEVLINK_NL_FLAG_NEED_SB,
6114 /* can be retrieved by unprivileged users */
6115 },
6116 {
6117 .cmd = DEVLINK_CMD_SB_POOL_SET,
ef6243ac 6118 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471 6119 .doit = devlink_nl_cmd_sb_pool_set_doit,
bf797471
JP		 6120 .flags = GENL_ADMIN_PERM,
6121 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6122 DEVLINK_NL_FLAG_NEED_SB,
6123 },
6124 {
6125 .cmd = DEVLINK_CMD_SB_PORT_POOL_GET,
ef6243ac 6126 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471
JP		 6127 .doit = devlink_nl_cmd_sb_port_pool_get_doit,
6128 .dumpit = devlink_nl_cmd_sb_port_pool_get_dumpit,
bf797471
JP		 6129 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
6130 DEVLINK_NL_FLAG_NEED_SB,
6131 /* can be retrieved by unprivileged users */
6132 },
6133 {
6134 .cmd = DEVLINK_CMD_SB_PORT_POOL_SET,
ef6243ac 6135 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471 6136 .doit = devlink_nl_cmd_sb_port_pool_set_doit,
bf797471
JP		 6137 .flags = GENL_ADMIN_PERM,
6138 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
6139 DEVLINK_NL_FLAG_NEED_SB,
6140 },
6141 {
6142 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_GET,
ef6243ac 6143 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471
JP		 6144 .doit = devlink_nl_cmd_sb_tc_pool_bind_get_doit,
6145 .dumpit = devlink_nl_cmd_sb_tc_pool_bind_get_dumpit,
bf797471
JP		 6146 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
6147 DEVLINK_NL_FLAG_NEED_SB,
6148 /* can be retrieved by unprivileged users */
6149 },
6150 {
6151 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_SET,
ef6243ac 6152 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471 6153 .doit = devlink_nl_cmd_sb_tc_pool_bind_set_doit,
bf797471
JP		 6154 .flags = GENL_ADMIN_PERM,
6155 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
6156 DEVLINK_NL_FLAG_NEED_SB,
6157 },
df38dafd
JP		 6158 {
6159 .cmd = DEVLINK_CMD_SB_OCC_SNAPSHOT,
ef6243ac 6160 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
df38dafd 6161 .doit = devlink_nl_cmd_sb_occ_snapshot_doit,
df38dafd
JP		 6162 .flags = GENL_ADMIN_PERM,
6163 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
2406e7e5 6164 DEVLINK_NL_FLAG_NEED_SB,
df38dafd
JP		 6165 },
6166 {
6167 .cmd = DEVLINK_CMD_SB_OCC_MAX_CLEAR,
ef6243ac 6168 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
df38dafd 6169 .doit = devlink_nl_cmd_sb_occ_max_clear_doit,
df38dafd
JP		 6170 .flags = GENL_ADMIN_PERM,
6171 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
2406e7e5 6172 DEVLINK_NL_FLAG_NEED_SB,
df38dafd 6173 },
08f4b591 6174 {
adf200f3 6175 .cmd = DEVLINK_CMD_ESWITCH_GET,
ef6243ac 6176 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
adf200f3 6177 .doit = devlink_nl_cmd_eswitch_get_doit,
08f4b591
OG		 6178 .flags = GENL_ADMIN_PERM,
6179 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6180 },
6181 {
adf200f3 6182 .cmd = DEVLINK_CMD_ESWITCH_SET,
ef6243ac 6183 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
adf200f3 6184 .doit = devlink_nl_cmd_eswitch_set_doit,
08f4b591 6185 .flags = GENL_ADMIN_PERM,
7ac1cc9a
JK		 6186 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6187 DEVLINK_NL_FLAG_NO_LOCK,
08f4b591 6188 },
1555d204
AS		 6189 {
6190 .cmd = DEVLINK_CMD_DPIPE_TABLE_GET,
ef6243ac 6191 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1555d204 6192 .doit = devlink_nl_cmd_dpipe_table_get,
1555d204 6193 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
67ae686b 6194 /* can be retrieved by unprivileged users */
1555d204
AS		 6195 },
6196 {
6197 .cmd = DEVLINK_CMD_DPIPE_ENTRIES_GET,
ef6243ac 6198 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1555d204 6199 .doit = devlink_nl_cmd_dpipe_entries_get,
1555d204 6200 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
67ae686b 6201 /* can be retrieved by unprivileged users */
1555d204
AS		 6202 },
6203 {
6204 .cmd = DEVLINK_CMD_DPIPE_HEADERS_GET,
ef6243ac 6205 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1555d204 6206 .doit = devlink_nl_cmd_dpipe_headers_get,
1555d204 6207 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
67ae686b 6208 /* can be retrieved by unprivileged users */
1555d204
AS		 6209 },
6210 {
6211 .cmd = DEVLINK_CMD_DPIPE_TABLE_COUNTERS_SET,
ef6243ac 6212 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1555d204 6213 .doit = devlink_nl_cmd_dpipe_table_counters_set,
1555d204
AS		 6214 .flags = GENL_ADMIN_PERM,
6215 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6216 },
d9f9b9a4
AS		 6217 {
6218 .cmd = DEVLINK_CMD_RESOURCE_SET,
ef6243ac 6219 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
d9f9b9a4 6220 .doit = devlink_nl_cmd_resource_set,
d9f9b9a4
AS		 6221 .flags = GENL_ADMIN_PERM,
6222 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6223 },
6224 {
6225 .cmd = DEVLINK_CMD_RESOURCE_DUMP,
ef6243ac 6226 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
d9f9b9a4 6227 .doit = devlink_nl_cmd_resource_dump,
d9f9b9a4 6228 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
67ae686b 6229 /* can be retrieved by unprivileged users */
d9f9b9a4 6230 },
2d8dc5bb
AS		 6231 {
6232 .cmd = DEVLINK_CMD_RELOAD,
ef6243ac 6233 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2d8dc5bb 6234 .doit = devlink_nl_cmd_reload,
2d8dc5bb
AS		 6235 .flags = GENL_ADMIN_PERM,
6236 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6237 DEVLINK_NL_FLAG_NO_LOCK,
6238 },
45f05def
MS		 6239 {
6240 .cmd = DEVLINK_CMD_PARAM_GET,
ef6243ac 6241 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
45f05def
MS		 6242 .doit = devlink_nl_cmd_param_get_doit,
6243 .dumpit = devlink_nl_cmd_param_get_dumpit,
45f05def
MS		 6244 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6245 /* can be retrieved by unprivileged users */
6246 },
e3b7ca18
MS		 6247 {
6248 .cmd = DEVLINK_CMD_PARAM_SET,
ef6243ac 6249 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
e3b7ca18 6250 .doit = devlink_nl_cmd_param_set_doit,
e3b7ca18
MS		 6251 .flags = GENL_ADMIN_PERM,
6252 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6253 },
f4601dee
VV		 6254 {
6255 .cmd = DEVLINK_CMD_PORT_PARAM_GET,
ef6243ac 6256 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
f4601dee
VV		 6257 .doit = devlink_nl_cmd_port_param_get_doit,
6258 .dumpit = devlink_nl_cmd_port_param_get_dumpit,
f4601dee
VV		 6259 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
6260 /* can be retrieved by unprivileged users */
6261 },
9c54873b
VV		 6262 {
6263 .cmd = DEVLINK_CMD_PORT_PARAM_SET,
ef6243ac 6264 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
9c54873b 6265 .doit = devlink_nl_cmd_port_param_set_doit,
9c54873b
VV		 6266 .flags = GENL_ADMIN_PERM,
6267 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
6268 },
d8db7ea5
AV		 6269 {
6270 .cmd = DEVLINK_CMD_REGION_GET,
ef6243ac 6271 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
d8db7ea5
AV		 6272 .doit = devlink_nl_cmd_region_get_doit,
6273 .dumpit = devlink_nl_cmd_region_get_dumpit,
d8db7ea5
AV		 6274 .flags = GENL_ADMIN_PERM,
6275 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6276 },
866319bb
AV		 6277 {
6278 .cmd = DEVLINK_CMD_REGION_DEL,
ef6243ac 6279 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
866319bb 6280 .doit = devlink_nl_cmd_region_del,
866319bb
AV		 6281 .flags = GENL_ADMIN_PERM,
6282 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6283 },
4e54795a
AV		 6284 {
6285 .cmd = DEVLINK_CMD_REGION_READ,
ee85da53
JP		 6286 .validate = GENL_DONT_VALIDATE_STRICT |
6287 GENL_DONT_VALIDATE_DUMP_STRICT,
4e54795a 6288 .dumpit = devlink_nl_cmd_region_read_dumpit,
4e54795a
AV		 6289 .flags = GENL_ADMIN_PERM,
6290 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6291 },
f9cf2288
JK		 6292 {
6293 .cmd = DEVLINK_CMD_INFO_GET,
ef6243ac 6294 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
f9cf2288
JK		 6295 .doit = devlink_nl_cmd_info_get_doit,
6296 .dumpit = devlink_nl_cmd_info_get_dumpit,
f9cf2288
JK		 6297 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6298 /* can be retrieved by unprivileged users */
6299 },
7afe335a
EBE		 6300 {
6301 .cmd = DEVLINK_CMD_HEALTH_REPORTER_GET,
ef6243ac 6302 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7afe335a
EBE		 6303 .doit = devlink_nl_cmd_health_reporter_get_doit,
6304 .dumpit = devlink_nl_cmd_health_reporter_get_dumpit,
b587bdaf
MS		 6305 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6306 DEVLINK_NL_FLAG_NO_LOCK,
7afe335a
EBE		 6307 /* can be retrieved by unprivileged users */
6308 },
a1e55ec0
EBE		 6309 {
6310 .cmd = DEVLINK_CMD_HEALTH_REPORTER_SET,
ef6243ac 6311 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
a1e55ec0 6312 .doit = devlink_nl_cmd_health_reporter_set_doit,
a1e55ec0 6313 .flags = GENL_ADMIN_PERM,
b587bdaf
MS		 6314 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6315 DEVLINK_NL_FLAG_NO_LOCK,
a1e55ec0 6316 },
20a0943a
EBE		 6317 {
6318 .cmd = DEVLINK_CMD_HEALTH_REPORTER_RECOVER,
ef6243ac 6319 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
20a0943a 6320 .doit = devlink_nl_cmd_health_reporter_recover_doit,
20a0943a 6321 .flags = GENL_ADMIN_PERM,
b587bdaf
MS		 6322 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6323 DEVLINK_NL_FLAG_NO_LOCK,
20a0943a 6324 },
fca42a27
EBE		 6325 {
6326 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE,
ef6243ac 6327 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
fca42a27 6328 .doit = devlink_nl_cmd_health_reporter_diagnose_doit,
fca42a27 6329 .flags = GENL_ADMIN_PERM,
b587bdaf
MS		 6330 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6331 DEVLINK_NL_FLAG_NO_LOCK,
fca42a27 6332 },
35455e23
EBE		 6333 {
6334 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET,
82a843de
JP		 6335 .validate = GENL_DONT_VALIDATE_STRICT |
6336 GENL_DONT_VALIDATE_DUMP_STRICT,
e44ef4e4 6337 .dumpit = devlink_nl_cmd_health_reporter_dump_get_dumpit,
35455e23
EBE		 6338 .flags = GENL_ADMIN_PERM,
6339 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6340 DEVLINK_NL_FLAG_NO_LOCK,
6341 },
6342 {
6343 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_CLEAR,
ef6243ac 6344 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
35455e23 6345 .doit = devlink_nl_cmd_health_reporter_dump_clear_doit,
35455e23
EBE		 6346 .flags = GENL_ADMIN_PERM,
6347 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6348 DEVLINK_NL_FLAG_NO_LOCK,
6349 },
76726ccb
JK		 6350 {
6351 .cmd = DEVLINK_CMD_FLASH_UPDATE,
ef6243ac 6352 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
76726ccb 6353 .doit = devlink_nl_cmd_flash_update,
76726ccb
JK		 6354 .flags = GENL_ADMIN_PERM,
6355 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6356 },
0f420b6c
IS		 6357 {
6358 .cmd = DEVLINK_CMD_TRAP_GET,
6359 .doit = devlink_nl_cmd_trap_get_doit,
6360 .dumpit = devlink_nl_cmd_trap_get_dumpit,
6361 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6362 /* can be retrieved by unprivileged users */
6363 },
6364 {
6365 .cmd = DEVLINK_CMD_TRAP_SET,
6366 .doit = devlink_nl_cmd_trap_set_doit,
6367 .flags = GENL_ADMIN_PERM,
6368 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6369 },
6370 {
6371 .cmd = DEVLINK_CMD_TRAP_GROUP_GET,
6372 .doit = devlink_nl_cmd_trap_group_get_doit,
6373 .dumpit = devlink_nl_cmd_trap_group_get_dumpit,
6374 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6375 /* can be retrieved by unprivileged users */
6376 },
6377 {
6378 .cmd = DEVLINK_CMD_TRAP_GROUP_SET,
6379 .doit = devlink_nl_cmd_trap_group_set_doit,
6380 .flags = GENL_ADMIN_PERM,
6381 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6382 },
bfcd3a46
JP		 6383};
6384
56989f6d 6385static struct genl_family devlink_nl_family __ro_after_init = {
489111e5
JB		 6386 .name = DEVLINK_GENL_NAME,
6387 .version = DEVLINK_GENL_VERSION,
6388 .maxattr = DEVLINK_ATTR_MAX,
3b0f31f2 6389 .policy = devlink_nl_policy,
489111e5
JB		 6390 .netnsok = true,
6391 .pre_doit = devlink_nl_pre_doit,
6392 .post_doit = devlink_nl_post_doit,
6393 .module = THIS_MODULE,
6394 .ops = devlink_nl_ops,
6395 .n_ops = ARRAY_SIZE(devlink_nl_ops),
6396 .mcgrps = devlink_nl_mcgrps,
6397 .n_mcgrps = ARRAY_SIZE(devlink_nl_mcgrps),
6398};
6399
bfcd3a46
JP		 6400/**
6401 * devlink_alloc - Allocate new devlink instance resources
6402 *
6403 * @ops: ops
6404 * @priv_size: size of user private data
6405 *
6406 * Allocate new devlink instance resources, including devlink index
6407 * and name.
6408 */
6409struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size)
6410{
6411 struct devlink *devlink;
6412
be6fe1d8
JK		 6413 if (WARN_ON(!ops))
6414 return NULL;
6415
bfcd3a46
JP		 6416 devlink = kzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL);
6417 if (!devlink)
6418 return NULL;
6419 devlink->ops = ops;
8273fd84 6420 __devlink_net_set(devlink, &init_net);
bfcd3a46 6421 INIT_LIST_HEAD(&devlink->port_list);
bf797471 6422 INIT_LIST_HEAD(&devlink->sb_list);
1555d204 6423 INIT_LIST_HEAD_RCU(&devlink->dpipe_table_list);
d9f9b9a4 6424 INIT_LIST_HEAD(&devlink->resource_list);
eabaef18 6425 INIT_LIST_HEAD(&devlink->param_list);
b16ebe92 6426 INIT_LIST_HEAD(&devlink->region_list);
a0bdcc59 6427 INIT_LIST_HEAD(&devlink->reporter_list);
0f420b6c
IS		 6428 INIT_LIST_HEAD(&devlink->trap_list);
6429 INIT_LIST_HEAD(&devlink->trap_group_list);
2406e7e5 6430 mutex_init(&devlink->lock);
b587bdaf 6431 mutex_init(&devlink->reporters_lock);
bfcd3a46
JP		 6432 return devlink;
6433}
6434EXPORT_SYMBOL_GPL(devlink_alloc);
6435
6436/**
6437 * devlink_register - Register devlink instance
6438 *
6439 * @devlink: devlink
eeaadd82 6440 * @dev: parent device
bfcd3a46
JP		 6441 */
6442int devlink_register(struct devlink *devlink, struct device *dev)
6443{
6444 mutex_lock(&devlink_mutex);
6445 devlink->dev = dev;
8273fd84 6446 devlink->registered = true;
bfcd3a46
JP		 6447 list_add_tail(&devlink->list, &devlink_list);
6448 devlink_notify(devlink, DEVLINK_CMD_NEW);
6449 mutex_unlock(&devlink_mutex);
6450 return 0;
6451}
6452EXPORT_SYMBOL_GPL(devlink_register);
6453
6454/**
6455 * devlink_unregister - Unregister devlink instance
6456 *
6457 * @devlink: devlink
6458 */
6459void devlink_unregister(struct devlink *devlink)
6460{
6461 mutex_lock(&devlink_mutex);
a0c76345
JP		 6462 WARN_ON(devlink_reload_supported(devlink) &&
6463 devlink->reload_enabled);
bfcd3a46
JP		 6464 devlink_notify(devlink, DEVLINK_CMD_DEL);
6465 list_del(&devlink->list);
6466 mutex_unlock(&devlink_mutex);
6467}
6468EXPORT_SYMBOL_GPL(devlink_unregister);
6469
a0c76345
JP		 6470/**
6471 * devlink_reload_enable - Enable reload of devlink instance
6472 *
6473 * @devlink: devlink
6474 *
6475 * Should be called at end of device initialization
6476 * process when reload operation is supported.
6477 */
6478void devlink_reload_enable(struct devlink *devlink)
6479{
6480 mutex_lock(&devlink_mutex);
6481 devlink->reload_enabled = true;
6482 mutex_unlock(&devlink_mutex);
6483}
6484EXPORT_SYMBOL_GPL(devlink_reload_enable);
6485
6486/**
6487 * devlink_reload_disable - Disable reload of devlink instance
6488 *
6489 * @devlink: devlink
6490 *
6491 * Should be called at the beginning of device cleanup
6492 * process when reload operation is supported.
6493 */
6494void devlink_reload_disable(struct devlink *devlink)
6495{
6496 mutex_lock(&devlink_mutex);
6497 /* Mutex is taken which ensures that no reload operation is in
6498 * progress while setting up forbidded flag.
6499 */
6500 devlink->reload_enabled = false;
6501 mutex_unlock(&devlink_mutex);
6502}
6503EXPORT_SYMBOL_GPL(devlink_reload_disable);
6504
bfcd3a46
JP		 6505/**
6506 * devlink_free - Free devlink instance resources
6507 *
6508 * @devlink: devlink
6509 */
6510void devlink_free(struct devlink *devlink)
6511{
b587bdaf 6512 mutex_destroy(&devlink->reporters_lock);
375cf8c6 6513 mutex_destroy(&devlink->lock);
0f420b6c
IS		 6514 WARN_ON(!list_empty(&devlink->trap_group_list));
6515 WARN_ON(!list_empty(&devlink->trap_list));
b904aada
PP		 6516 WARN_ON(!list_empty(&devlink->reporter_list));
6517 WARN_ON(!list_empty(&devlink->region_list));
6518 WARN_ON(!list_empty(&devlink->param_list));
6519 WARN_ON(!list_empty(&devlink->resource_list));
6520 WARN_ON(!list_empty(&devlink->dpipe_table_list));
6521 WARN_ON(!list_empty(&devlink->sb_list));
6522 WARN_ON(!list_empty(&devlink->port_list));
6523
bfcd3a46
JP		 6524 kfree(devlink);
6525}
6526EXPORT_SYMBOL_GPL(devlink_free);
6527
136bf27f
JP		 6528static void devlink_port_type_warn(struct work_struct *work)
6529{
6530 WARN(true, "Type was not set for devlink port.");
6531}
6532
6533static bool devlink_port_type_should_warn(struct devlink_port *devlink_port)
6534{
6535 /* Ignore CPU and DSA flavours. */
6536 return devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_CPU &&
6537 devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_DSA;
6538}
6539
4c582234 6540#define DEVLINK_PORT_TYPE_WARN_TIMEOUT (HZ * 3600)
136bf27f
JP		 6541
6542static void devlink_port_type_warn_schedule(struct devlink_port *devlink_port)
6543{
6544 if (!devlink_port_type_should_warn(devlink_port))
6545 return;
6546 /* Schedule a work to WARN in case driver does not set port
6547 * type within timeout.
6548 */
6549 schedule_delayed_work(&devlink_port->type_warn_dw,
6550 DEVLINK_PORT_TYPE_WARN_TIMEOUT);
6551}
6552
6553static void devlink_port_type_warn_cancel(struct devlink_port *devlink_port)
6554{
6555 if (!devlink_port_type_should_warn(devlink_port))
6556 return;
6557 cancel_delayed_work_sync(&devlink_port->type_warn_dw);
6558}
6559
bfcd3a46
JP		 6560/**
6561 * devlink_port_register - Register devlink port
6562 *
6563 * @devlink: devlink
6564 * @devlink_port: devlink port
eeaadd82 6565 * @port_index: driver-specific numerical identifier of the port
bfcd3a46
JP		 6566 *
6567 * Register devlink port with provided port index. User can use
6568 * any indexing, even hw-related one. devlink_port structure
6569 * is convenient to be embedded inside user driver private structure.
6570 * Note that the caller should take care of zeroing the devlink_port
6571 * structure.
6572 */
6573int devlink_port_register(struct devlink *devlink,
6574 struct devlink_port *devlink_port,
6575 unsigned int port_index)
6576{
2406e7e5 6577 mutex_lock(&devlink->lock);
bfcd3a46 6578 if (devlink_port_index_exists(devlink, port_index)) {
2406e7e5 6579 mutex_unlock(&devlink->lock);
bfcd3a46
JP		 6580 return -EEXIST;
6581 }
6582 devlink_port->devlink = devlink;
6583 devlink_port->index = port_index;
bfcd3a46 6584 devlink_port->registered = true;
b8f97554 6585 spin_lock_init(&devlink_port->type_lock);
bfcd3a46 6586 list_add_tail(&devlink_port->list, &devlink->port_list);
39e6160e 6587 INIT_LIST_HEAD(&devlink_port->param_list);
2406e7e5 6588 mutex_unlock(&devlink->lock);
136bf27f
JP		 6589 INIT_DELAYED_WORK(&devlink_port->type_warn_dw, &devlink_port_type_warn);
6590 devlink_port_type_warn_schedule(devlink_port);
bfcd3a46
JP		 6591 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
6592 return 0;
6593}
6594EXPORT_SYMBOL_GPL(devlink_port_register);
6595
6596/**
6597 * devlink_port_unregister - Unregister devlink port
6598 *
6599 * @devlink_port: devlink port
6600 */
6601void devlink_port_unregister(struct devlink_port *devlink_port)
6602{
2406e7e5
AS		 6603 struct devlink *devlink = devlink_port->devlink;
6604
136bf27f 6605 devlink_port_type_warn_cancel(devlink_port);
bfcd3a46 6606 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
2406e7e5 6607 mutex_lock(&devlink->lock);
bfcd3a46 6608 list_del(&devlink_port->list);
2406e7e5 6609 mutex_unlock(&devlink->lock);
bfcd3a46
JP		 6610}
6611EXPORT_SYMBOL_GPL(devlink_port_unregister);
6612
6613static void __devlink_port_type_set(struct devlink_port *devlink_port,
6614 enum devlink_port_type type,
6615 void *type_dev)
6616{
2b239e70
JP		 6617 if (WARN_ON(!devlink_port->registered))
6618 return;
136bf27f 6619 devlink_port_type_warn_cancel(devlink_port);
0f420b6c 6620 spin_lock_bh(&devlink_port->type_lock);
bfcd3a46
JP		 6621 devlink_port->type = type;
6622 devlink_port->type_dev = type_dev;
0f420b6c 6623 spin_unlock_bh(&devlink_port->type_lock);
bfcd3a46
JP		 6624 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
6625}
6626
6627/**
6628 * devlink_port_type_eth_set - Set port type to Ethernet
6629 *
6630 * @devlink_port: devlink port
6631 * @netdev: related netdevice
6632 */
6633void devlink_port_type_eth_set(struct devlink_port *devlink_port,
6634 struct net_device *netdev)
6635{
119c0b57
JP		 6636 const struct net_device_ops *ops = netdev->netdev_ops;
6637
746364f2
JP		 6638 /* If driver registers devlink port, it should set devlink port
6639 * attributes accordingly so the compat functions are called
6640 * and the original ops are not used.
6641 */
119c0b57 6642 if (ops->ndo_get_phys_port_name) {
746364f2
JP		 6643 /* Some drivers use the same set of ndos for netdevs
6644 * that have devlink_port registered and also for
6645 * those who don't. Make sure that ndo_get_phys_port_name
6646 * returns -EOPNOTSUPP here in case it is defined.
6647 * Warn if not.
6648 */
746364f2
JP		 6649 char name[IFNAMSIZ];
6650 int err;
6651
6652 err = ops->ndo_get_phys_port_name(netdev, name, sizeof(name));
6653 WARN_ON(err != -EOPNOTSUPP);
6654 }
119c0b57
JP		 6655 if (ops->ndo_get_port_parent_id) {
6656 /* Some drivers use the same set of ndos for netdevs
6657 * that have devlink_port registered and also for
6658 * those who don't. Make sure that ndo_get_port_parent_id
6659 * returns -EOPNOTSUPP here in case it is defined.
6660 * Warn if not.
6661 */
6662 struct netdev_phys_item_id ppid;
6663 int err;
6664
6665 err = ops->ndo_get_port_parent_id(netdev, &ppid);
6666 WARN_ON(err != -EOPNOTSUPP);
6667 }
773b1f38 6668 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH, netdev);
bfcd3a46
JP		 6669}
6670EXPORT_SYMBOL_GPL(devlink_port_type_eth_set);
6671
6672/**
6673 * devlink_port_type_ib_set - Set port type to InfiniBand
6674 *
6675 * @devlink_port: devlink port
6676 * @ibdev: related IB device
6677 */
6678void devlink_port_type_ib_set(struct devlink_port *devlink_port,
6679 struct ib_device *ibdev)
6680{
773b1f38 6681 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_IB, ibdev);
bfcd3a46
JP		 6682}
6683EXPORT_SYMBOL_GPL(devlink_port_type_ib_set);
6684
6685/**
6686 * devlink_port_type_clear - Clear port type
6687 *
6688 * @devlink_port: devlink port
6689 */
6690void devlink_port_type_clear(struct devlink_port *devlink_port)
6691{
773b1f38 6692 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET, NULL);
136bf27f 6693 devlink_port_type_warn_schedule(devlink_port);
bfcd3a46
JP		 6694}
6695EXPORT_SYMBOL_GPL(devlink_port_type_clear);
6696
378ef01b
PP		 6697static int __devlink_port_attrs_set(struct devlink_port *devlink_port,
6698 enum devlink_port_flavour flavour,
6699 const unsigned char *switch_id,
6700 unsigned char switch_id_len)
6701{
6702 struct devlink_port_attrs *attrs = &devlink_port->attrs;
6703
6704 if (WARN_ON(devlink_port->registered))
6705 return -EEXIST;
6706 attrs->set = true;
6707 attrs->flavour = flavour;
6708 if (switch_id) {
6709 attrs->switch_port = true;
6710 if (WARN_ON(switch_id_len > MAX_PHYS_ITEM_ID_LEN))
6711 switch_id_len = MAX_PHYS_ITEM_ID_LEN;
6712 memcpy(attrs->switch_id.id, switch_id, switch_id_len);
6713 attrs->switch_id.id_len = switch_id_len;
6714 } else {
6715 attrs->switch_port = false;
6716 }
6717 return 0;
6718}
6719
bfcd3a46 6720/**
b9ffcbaf 6721 * devlink_port_attrs_set - Set port attributes
bfcd3a46
JP		 6722 *
6723 * @devlink_port: devlink port
5ec1380a 6724 * @flavour: flavour of the port
b9ffcbaf
JP		 6725 * @port_number: number of the port that is facing user, for example
6726 * the front panel port number
6727 * @split: indicates if this is split port
6728 * @split_subport_number: if the port is split, this is the number
6729 * of subport.
bec5267c
JP		 6730 * @switch_id: if the port is part of switch, this is buffer with ID,
6731 * otwerwise this is NULL
6732 * @switch_id_len: length of the switch_id buffer
bfcd3a46 6733 */
b9ffcbaf 6734void devlink_port_attrs_set(struct devlink_port *devlink_port,
5ec1380a 6735 enum devlink_port_flavour flavour,
b9ffcbaf 6736 u32 port_number, bool split,
bec5267c
JP		 6737 u32 split_subport_number,
6738 const unsigned char *switch_id,
6739 unsigned char switch_id_len)
bfcd3a46 6740{
b9ffcbaf 6741 struct devlink_port_attrs *attrs = &devlink_port->attrs;
378ef01b 6742 int ret;
b9ffcbaf 6743
378ef01b
PP		 6744 ret = __devlink_port_attrs_set(devlink_port, flavour,
6745 switch_id, switch_id_len);
6746 if (ret)
45b86112 6747 return;
b9ffcbaf 6748 attrs->split = split;
378ef01b
PP		 6749 attrs->phys.port_number = port_number;
6750 attrs->phys.split_subport_number = split_subport_number;
bfcd3a46 6751}
b9ffcbaf 6752EXPORT_SYMBOL_GPL(devlink_port_attrs_set);
bfcd3a46 6753
98fd2d65
PP		 6754/**
6755 * devlink_port_attrs_pci_pf_set - Set PCI PF port attributes
6756 *
6757 * @devlink_port: devlink port
6758 * @pf: associated PF for the devlink port instance
6759 * @switch_id: if the port is part of switch, this is buffer with ID,
6760 * otherwise this is NULL
6761 * @switch_id_len: length of the switch_id buffer
6762 */
6763void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port,
6764 const unsigned char *switch_id,
6765 unsigned char switch_id_len, u16 pf)
6766{
6767 struct devlink_port_attrs *attrs = &devlink_port->attrs;
6768 int ret;
6769
6770 ret = __devlink_port_attrs_set(devlink_port,
6771 DEVLINK_PORT_FLAVOUR_PCI_PF,
6772 switch_id, switch_id_len);
6773 if (ret)
6774 return;
6775
6776 attrs->pci_pf.pf = pf;
6777}
6778EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_pf_set);
6779
e41b6bf3
PP		 6780/**
6781 * devlink_port_attrs_pci_vf_set - Set PCI VF port attributes
6782 *
6783 * @devlink_port: devlink port
6784 * @pf: associated PF for the devlink port instance
6785 * @vf: associated VF of a PF for the devlink port instance
6786 * @switch_id: if the port is part of switch, this is buffer with ID,
6787 * otherwise this is NULL
6788 * @switch_id_len: length of the switch_id buffer
6789 */
6790void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port,
6791 const unsigned char *switch_id,
6792 unsigned char switch_id_len,
6793 u16 pf, u16 vf)
6794{
6795 struct devlink_port_attrs *attrs = &devlink_port->attrs;
6796 int ret;
6797
6798 ret = __devlink_port_attrs_set(devlink_port,
6799 DEVLINK_PORT_FLAVOUR_PCI_VF,
6800 switch_id, switch_id_len);
6801 if (ret)
6802 return;
6803 attrs->pci_vf.pf = pf;
6804 attrs->pci_vf.vf = vf;
6805}
6806EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_vf_set);
6807
af3836df
JP		 6808static int __devlink_port_phys_port_name_get(struct devlink_port *devlink_port,
6809 char *name, size_t len)
08474c1a
JP		 6810{
6811 struct devlink_port_attrs *attrs = &devlink_port->attrs;
6812 int n = 0;
6813
6814 if (!attrs->set)
6815 return -EOPNOTSUPP;
6816
6817 switch (attrs->flavour) {
6818 case DEVLINK_PORT_FLAVOUR_PHYSICAL:
acf1ee44 6819 case DEVLINK_PORT_FLAVOUR_VIRTUAL:
08474c1a 6820 if (!attrs->split)
378ef01b 6821 n = snprintf(name, len, "p%u", attrs->phys.port_number);
08474c1a 6822 else
378ef01b
PP		 6823 n = snprintf(name, len, "p%us%u",
6824 attrs->phys.port_number,
6825 attrs->phys.split_subport_number);
08474c1a
JP		 6826 break;
6827 case DEVLINK_PORT_FLAVOUR_CPU:
6828 case DEVLINK_PORT_FLAVOUR_DSA:
6829 /* As CPU and DSA ports do not have a netdevice associated
6830 * case should not ever happen.
6831 */
6832 WARN_ON(1);
6833 return -EINVAL;
98fd2d65
PP		 6834 case DEVLINK_PORT_FLAVOUR_PCI_PF:
6835 n = snprintf(name, len, "pf%u", attrs->pci_pf.pf);
6836 break;
e41b6bf3
PP		 6837 case DEVLINK_PORT_FLAVOUR_PCI_VF:
6838 n = snprintf(name, len, "pf%uvf%u",
6839 attrs->pci_vf.pf, attrs->pci_vf.vf);
6840 break;
08474c1a
JP		 6841 }
6842
6843 if (n >= len)
6844 return -EINVAL;
6845
6846 return 0;
6847}
af3836df 6848
bf797471
JP		 6849int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
6850 u32 size, u16 ingress_pools_count,
6851 u16 egress_pools_count, u16 ingress_tc_count,
6852 u16 egress_tc_count)
6853{
6854 struct devlink_sb *devlink_sb;
6855 int err = 0;
6856
2406e7e5 6857 mutex_lock(&devlink->lock);
bf797471
JP		 6858 if (devlink_sb_index_exists(devlink, sb_index)) {
6859 err = -EEXIST;
6860 goto unlock;
6861 }
6862
6863 devlink_sb = kzalloc(sizeof(*devlink_sb), GFP_KERNEL);
6864 if (!devlink_sb) {
6865 err = -ENOMEM;
6866 goto unlock;
6867 }
6868 devlink_sb->index = sb_index;
6869 devlink_sb->size = size;
6870 devlink_sb->ingress_pools_count = ingress_pools_count;
6871 devlink_sb->egress_pools_count = egress_pools_count;
6872 devlink_sb->ingress_tc_count = ingress_tc_count;
6873 devlink_sb->egress_tc_count = egress_tc_count;
6874 list_add_tail(&devlink_sb->list, &devlink->sb_list);
6875unlock:
2406e7e5 6876 mutex_unlock(&devlink->lock);
bf797471
JP		 6877 return err;
6878}
6879EXPORT_SYMBOL_GPL(devlink_sb_register);
6880
6881void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index)
6882{
6883 struct devlink_sb *devlink_sb;
6884
2406e7e5 6885 mutex_lock(&devlink->lock);
bf797471
JP		 6886 devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
6887 WARN_ON(!devlink_sb);
6888 list_del(&devlink_sb->list);
2406e7e5 6889 mutex_unlock(&devlink->lock);
bf797471
JP		 6890 kfree(devlink_sb);
6891}
6892EXPORT_SYMBOL_GPL(devlink_sb_unregister);
6893
1555d204
AS		 6894/**
6895 * devlink_dpipe_headers_register - register dpipe headers
6896 *
6897 * @devlink: devlink
6898 * @dpipe_headers: dpipe header array
6899 *
6900 * Register the headers supported by hardware.
6901 */
6902int devlink_dpipe_headers_register(struct devlink *devlink,
6903 struct devlink_dpipe_headers *dpipe_headers)
6904{
2406e7e5 6905 mutex_lock(&devlink->lock);
1555d204 6906 devlink->dpipe_headers = dpipe_headers;
2406e7e5 6907 mutex_unlock(&devlink->lock);
1555d204
AS		 6908 return 0;
6909}
6910EXPORT_SYMBOL_GPL(devlink_dpipe_headers_register);
6911
6912/**
6913 * devlink_dpipe_headers_unregister - unregister dpipe headers
6914 *
6915 * @devlink: devlink
6916 *
6917 * Unregister the headers supported by hardware.
6918 */
6919void devlink_dpipe_headers_unregister(struct devlink *devlink)
6920{
2406e7e5 6921 mutex_lock(&devlink->lock);
1555d204 6922 devlink->dpipe_headers = NULL;
2406e7e5 6923 mutex_unlock(&devlink->lock);
1555d204
AS		 6924}
6925EXPORT_SYMBOL_GPL(devlink_dpipe_headers_unregister);
6926
6927/**
6928 * devlink_dpipe_table_counter_enabled - check if counter allocation
6929 * required
6930 * @devlink: devlink
6931 * @table_name: tables name
6932 *
6933 * Used by driver to check if counter allocation is required.
6934 * After counter allocation is turned on the table entries
6935 * are updated to include counter statistics.
6936 *
6937 * After that point on the driver must respect the counter
6938 * state so that each entry added to the table is added
6939 * with a counter.
6940 */
6941bool devlink_dpipe_table_counter_enabled(struct devlink *devlink,
6942 const char *table_name)
6943{
6944 struct devlink_dpipe_table *table;
6945 bool enabled;
6946
6947 rcu_read_lock();
6948 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2eb51c75 6949 table_name, devlink);
1555d204
AS		 6950 enabled = false;
6951 if (table)
6952 enabled = table->counters_enabled;
6953 rcu_read_unlock();
6954 return enabled;
6955}
6956EXPORT_SYMBOL_GPL(devlink_dpipe_table_counter_enabled);
6957
6958/**
6959 * devlink_dpipe_table_register - register dpipe table
6960 *
6961 * @devlink: devlink
6962 * @table_name: table name
6963 * @table_ops: table ops
6964 * @priv: priv
1555d204
AS		 6965 * @counter_control_extern: external control for counters
6966 */
6967int devlink_dpipe_table_register(struct devlink *devlink,
6968 const char *table_name,
6969 struct devlink_dpipe_table_ops *table_ops,
ffd3cdcc 6970 void *priv, bool counter_control_extern)
1555d204
AS		 6971{
6972 struct devlink_dpipe_table *table;
6132c1d9 6973 int err = 0;
1555d204 6974
ffd3cdcc
AS		 6975 if (WARN_ON(!table_ops->size_get))
6976 return -EINVAL;
6977
6132c1d9
MB		 6978 mutex_lock(&devlink->lock);
6979
2eb51c75
MB		 6980 if (devlink_dpipe_table_find(&devlink->dpipe_table_list, table_name,
6981 devlink)) {
6132c1d9
MB		 6982 err = -EEXIST;
6983 goto unlock;
6984 }
6985
1555d204 6986 table = kzalloc(sizeof(*table), GFP_KERNEL);
6132c1d9
MB		 6987 if (!table) {
6988 err = -ENOMEM;
6989 goto unlock;
6990 }
1555d204
AS		 6991
6992 table->name = table_name;
6993 table->table_ops = table_ops;
6994 table->priv = priv;
1555d204
AS		 6995 table->counter_control_extern = counter_control_extern;
6996
1555d204 6997 list_add_tail_rcu(&table->list, &devlink->dpipe_table_list);
6132c1d9 6998unlock:
2406e7e5 6999 mutex_unlock(&devlink->lock);
6132c1d9 7000 return err;
1555d204
AS		 7001}
7002EXPORT_SYMBOL_GPL(devlink_dpipe_table_register);
7003
7004/**
7005 * devlink_dpipe_table_unregister - unregister dpipe table
7006 *
7007 * @devlink: devlink
7008 * @table_name: table name
7009 */
7010void devlink_dpipe_table_unregister(struct devlink *devlink,
7011 const char *table_name)
7012{
7013 struct devlink_dpipe_table *table;
7014
2406e7e5 7015 mutex_lock(&devlink->lock);
1555d204 7016 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2eb51c75 7017 table_name, devlink);
1555d204
AS		 7018 if (!table)
7019 goto unlock;
7020 list_del_rcu(&table->list);
2406e7e5 7021 mutex_unlock(&devlink->lock);
1555d204
AS		 7022 kfree_rcu(table, rcu);
7023 return;
7024unlock:
2406e7e5 7025 mutex_unlock(&devlink->lock);
1555d204
AS		 7026}
7027EXPORT_SYMBOL_GPL(devlink_dpipe_table_unregister);
7028
d9f9b9a4
AS		 7029/**
7030 * devlink_resource_register - devlink resource register
7031 *
7032 * @devlink: devlink
7033 * @resource_name: resource's name
d9f9b9a4
AS		 7034 * @resource_size: resource's size
7035 * @resource_id: resource's id
eeaadd82
JK		 7036 * @parent_resource_id: resource's parent id
7037 * @size_params: size parameters
d9f9b9a4
AS		 7038 */
7039int devlink_resource_register(struct devlink *devlink,
7040 const char *resource_name,
d9f9b9a4
AS		 7041 u64 resource_size,
7042 u64 resource_id,
7043 u64 parent_resource_id,
fc56be47 7044 const struct devlink_resource_size_params *size_params)
d9f9b9a4
AS		 7045{
7046 struct devlink_resource *resource;
7047 struct list_head *resource_list;
14530746 7048 bool top_hierarchy;
d9f9b9a4
AS		 7049 int err = 0;
7050
14530746
DA		 7051 top_hierarchy = parent_resource_id == DEVLINK_RESOURCE_ID_PARENT_TOP;
7052
d9f9b9a4
AS		 7053 mutex_lock(&devlink->lock);
7054 resource = devlink_resource_find(devlink, NULL, resource_id);
7055 if (resource) {
7056 err = -EINVAL;
7057 goto out;
7058 }
7059
7060 resource = kzalloc(sizeof(*resource), GFP_KERNEL);
7061 if (!resource) {
7062 err = -ENOMEM;
7063 goto out;
7064 }
7065
7066 if (top_hierarchy) {
7067 resource_list = &devlink->resource_list;
7068 } else {
7069 struct devlink_resource *parent_resource;
7070
7071 parent_resource = devlink_resource_find(devlink, NULL,
7072 parent_resource_id);
7073 if (parent_resource) {
7074 resource_list = &parent_resource->resource_list;
7075 resource->parent = parent_resource;
7076 } else {
b75703de 7077 kfree(resource);
d9f9b9a4
AS		 7078 err = -EINVAL;
7079 goto out;
7080 }
7081 }
7082
7083 resource->name = resource_name;
7084 resource->size = resource_size;
7085 resource->size_new = resource_size;
7086 resource->id = resource_id;
d9f9b9a4 7087 resource->size_valid = true;
77d27096
JP		 7088 memcpy(&resource->size_params, size_params,
7089 sizeof(resource->size_params));
d9f9b9a4
AS		 7090 INIT_LIST_HEAD(&resource->resource_list);
7091 list_add_tail(&resource->list, resource_list);
7092out:
7093 mutex_unlock(&devlink->lock);
7094 return err;
7095}
7096EXPORT_SYMBOL_GPL(devlink_resource_register);
7097
7098/**
7099 * devlink_resources_unregister - free all resources
7100 *
7101 * @devlink: devlink
7102 * @resource: resource
7103 */
7104void devlink_resources_unregister(struct devlink *devlink,
7105 struct devlink_resource *resource)
7106{
7107 struct devlink_resource *tmp, *child_resource;
7108 struct list_head *resource_list;
7109
7110 if (resource)
7111 resource_list = &resource->resource_list;
7112 else
7113 resource_list = &devlink->resource_list;
7114
7115 if (!resource)
7116 mutex_lock(&devlink->lock);
7117
7118 list_for_each_entry_safe(child_resource, tmp, resource_list, list) {
7119 devlink_resources_unregister(devlink, child_resource);
7120 list_del(&child_resource->list);
7121 kfree(child_resource);
7122 }
7123
7124 if (!resource)
7125 mutex_unlock(&devlink->lock);
7126}
7127EXPORT_SYMBOL_GPL(devlink_resources_unregister);
7128
7129/**
7130 * devlink_resource_size_get - get and update size
7131 *
7132 * @devlink: devlink
7133 * @resource_id: the requested resource id
7134 * @p_resource_size: ptr to update
7135 */
7136int devlink_resource_size_get(struct devlink *devlink,
7137 u64 resource_id,
7138 u64 *p_resource_size)
7139{
7140 struct devlink_resource *resource;
7141 int err = 0;
7142
7143 mutex_lock(&devlink->lock);
7144 resource = devlink_resource_find(devlink, NULL, resource_id);
7145 if (!resource) {
7146 err = -EINVAL;
7147 goto out;
7148 }
7149 *p_resource_size = resource->size_new;
7150 resource->size = resource->size_new;
7151out:
7152 mutex_unlock(&devlink->lock);
7153 return err;
7154}
7155EXPORT_SYMBOL_GPL(devlink_resource_size_get);
7156
56dc7cd0
AS		 7157/**
7158 * devlink_dpipe_table_resource_set - set the resource id
7159 *
7160 * @devlink: devlink
7161 * @table_name: table name
7162 * @resource_id: resource id
7163 * @resource_units: number of resource's units consumed per table's entry
7164 */
7165int devlink_dpipe_table_resource_set(struct devlink *devlink,
7166 const char *table_name, u64 resource_id,
7167 u64 resource_units)
7168{
7169 struct devlink_dpipe_table *table;
7170 int err = 0;
7171
7172 mutex_lock(&devlink->lock);
7173 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2eb51c75 7174 table_name, devlink);
56dc7cd0
AS		 7175 if (!table) {
7176 err = -EINVAL;
7177 goto out;
7178 }
7179 table->resource_id = resource_id;
7180 table->resource_units = resource_units;
7181 table->resource_valid = true;
7182out:
7183 mutex_unlock(&devlink->lock);
7184 return err;
7185}
7186EXPORT_SYMBOL_GPL(devlink_dpipe_table_resource_set);
7187
fc56be47
JP		 7188/**
7189 * devlink_resource_occ_get_register - register occupancy getter
7190 *
7191 * @devlink: devlink
7192 * @resource_id: resource id
7193 * @occ_get: occupancy getter callback
7194 * @occ_get_priv: occupancy getter callback priv
7195 */
7196void devlink_resource_occ_get_register(struct devlink *devlink,
7197 u64 resource_id,
7198 devlink_resource_occ_get_t *occ_get,
7199 void *occ_get_priv)
7200{
7201 struct devlink_resource *resource;
7202
7203 mutex_lock(&devlink->lock);
7204 resource = devlink_resource_find(devlink, NULL, resource_id);
7205 if (WARN_ON(!resource))
7206 goto out;
7207 WARN_ON(resource->occ_get);
7208
7209 resource->occ_get = occ_get;
7210 resource->occ_get_priv = occ_get_priv;
7211out:
7212 mutex_unlock(&devlink->lock);
7213}
7214EXPORT_SYMBOL_GPL(devlink_resource_occ_get_register);
7215
7216/**
7217 * devlink_resource_occ_get_unregister - unregister occupancy getter
7218 *
7219 * @devlink: devlink
7220 * @resource_id: resource id
7221 */
7222void devlink_resource_occ_get_unregister(struct devlink *devlink,
7223 u64 resource_id)
7224{
7225 struct devlink_resource *resource;
7226
7227 mutex_lock(&devlink->lock);
7228 resource = devlink_resource_find(devlink, NULL, resource_id);
7229 if (WARN_ON(!resource))
7230 goto out;
7231 WARN_ON(!resource->occ_get);
7232
7233 resource->occ_get = NULL;
7234 resource->occ_get_priv = NULL;
7235out:
7236 mutex_unlock(&devlink->lock);
7237}
7238EXPORT_SYMBOL_GPL(devlink_resource_occ_get_unregister);
7239
39e6160e
VV		 7240static int devlink_param_verify(const struct devlink_param *param)
7241{
7242 if (!param || !param->name || !param->supported_cmodes)
7243 return -EINVAL;
7244 if (param->generic)
7245 return devlink_param_generic_verify(param);
7246 else
7247 return devlink_param_driver_verify(param);
7248}
7249
7250static int __devlink_params_register(struct devlink *devlink,
c1e5786d 7251 unsigned int port_index,
39e6160e
VV		 7252 struct list_head *param_list,
7253 const struct devlink_param *params,
c1e5786d
VV		 7254 size_t params_count,
7255 enum devlink_command reg_cmd,
7256 enum devlink_command unreg_cmd)
eabaef18
MS		 7257{
7258 const struct devlink_param *param = params;
7259 int i;
7260 int err;
7261
7262 mutex_lock(&devlink->lock);
7263 for (i = 0; i < params_count; i++, param++) {
39e6160e
VV		 7264 err = devlink_param_verify(param);
7265 if (err)
eabaef18 7266 goto rollback;
39e6160e 7267
c1e5786d
VV		 7268 err = devlink_param_register_one(devlink, port_index,
7269 param_list, param, reg_cmd);
eabaef18
MS		 7270 if (err)
7271 goto rollback;
7272 }
7273
7274 mutex_unlock(&devlink->lock);
7275 return 0;
7276
7277rollback:
7278 if (!i)
7279 goto unlock;
7280 for (param--; i > 0; i--, param--)
c1e5786d
VV		 7281 devlink_param_unregister_one(devlink, port_index, param_list,
7282 param, unreg_cmd);
eabaef18
MS		 7283unlock:
7284 mutex_unlock(&devlink->lock);
7285 return err;
7286}
39e6160e
VV		 7287
7288static void __devlink_params_unregister(struct devlink *devlink,
c1e5786d 7289 unsigned int port_index,
39e6160e
VV		 7290 struct list_head *param_list,
7291 const struct devlink_param *params,
c1e5786d
VV		 7292 size_t params_count,
7293 enum devlink_command cmd)
39e6160e
VV		 7294{
7295 const struct devlink_param *param = params;
7296 int i;
7297
7298 mutex_lock(&devlink->lock);
7299 for (i = 0; i < params_count; i++, param++)
c1e5786d
VV		 7300 devlink_param_unregister_one(devlink, 0, param_list, param,
7301 cmd);
39e6160e
VV		 7302 mutex_unlock(&devlink->lock);
7303}
7304
7305/**
7306 * devlink_params_register - register configuration parameters
7307 *
7308 * @devlink: devlink
7309 * @params: configuration parameters array
7310 * @params_count: number of parameters provided
7311 *
7312 * Register the configuration parameters supported by the driver.
7313 */
7314int devlink_params_register(struct devlink *devlink,
7315 const struct devlink_param *params,
7316 size_t params_count)
7317{
c1e5786d
VV		 7318 return __devlink_params_register(devlink, 0, &devlink->param_list,
7319 params, params_count,
7320 DEVLINK_CMD_PARAM_NEW,
7321 DEVLINK_CMD_PARAM_DEL);
39e6160e 7322}
eabaef18
MS		 7323EXPORT_SYMBOL_GPL(devlink_params_register);
7324
7325/**
7326 * devlink_params_unregister - unregister configuration parameters
7327 * @devlink: devlink
7328 * @params: configuration parameters to unregister
7329 * @params_count: number of parameters provided
7330 */
7331void devlink_params_unregister(struct devlink *devlink,
7332 const struct devlink_param *params,
7333 size_t params_count)
7334{
c1e5786d
VV		 7335 return __devlink_params_unregister(devlink, 0, &devlink->param_list,
7336 params, params_count,
7337 DEVLINK_CMD_PARAM_DEL);
eabaef18
MS		 7338}
7339EXPORT_SYMBOL_GPL(devlink_params_unregister);
7340
7c62cfb8
JP		 7341/**
7342 * devlink_params_publish - publish configuration parameters
7343 *
7344 * @devlink: devlink
7345 *
7346 * Publish previously registered configuration parameters.
7347 */
7348void devlink_params_publish(struct devlink *devlink)
7349{
7350 struct devlink_param_item *param_item;
7351
7352 list_for_each_entry(param_item, &devlink->param_list, list) {
7353 if (param_item->published)
7354 continue;
7355 param_item->published = true;
7356 devlink_param_notify(devlink, 0, param_item,
7357 DEVLINK_CMD_PARAM_NEW);
7358 }
7359}
7360EXPORT_SYMBOL_GPL(devlink_params_publish);
7361
7362/**
7363 * devlink_params_unpublish - unpublish configuration parameters
7364 *
7365 * @devlink: devlink
7366 *
7367 * Unpublish previously registered configuration parameters.
7368 */
7369void devlink_params_unpublish(struct devlink *devlink)
7370{
7371 struct devlink_param_item *param_item;
7372
7373 list_for_each_entry(param_item, &devlink->param_list, list) {
7374 if (!param_item->published)
7375 continue;
7376 param_item->published = false;
7377 devlink_param_notify(devlink, 0, param_item,
7378 DEVLINK_CMD_PARAM_DEL);
7379 }
7380}
7381EXPORT_SYMBOL_GPL(devlink_params_unpublish);
7382
39e6160e
VV		 7383/**
7384 * devlink_port_params_register - register port configuration parameters
7385 *
7386 * @devlink_port: devlink port
7387 * @params: configuration parameters array
7388 * @params_count: number of parameters provided
7389 *
7390 * Register the configuration parameters supported by the port.
7391 */
7392int devlink_port_params_register(struct devlink_port *devlink_port,
7393 const struct devlink_param *params,
7394 size_t params_count)
7395{
7396 return __devlink_params_register(devlink_port->devlink,
c1e5786d 7397 devlink_port->index,
39e6160e 7398 &devlink_port->param_list, params,
c1e5786d
VV		 7399 params_count,
7400 DEVLINK_CMD_PORT_PARAM_NEW,
7401 DEVLINK_CMD_PORT_PARAM_DEL);
39e6160e
VV		 7402}
7403EXPORT_SYMBOL_GPL(devlink_port_params_register);
7404
7405/**
7406 * devlink_port_params_unregister - unregister port configuration
7407 * parameters
7408 *
7409 * @devlink_port: devlink port
7410 * @params: configuration parameters array
7411 * @params_count: number of parameters provided
7412 */
7413void devlink_port_params_unregister(struct devlink_port *devlink_port,
7414 const struct devlink_param *params,
7415 size_t params_count)
7416{
7417 return __devlink_params_unregister(devlink_port->devlink,
c1e5786d 7418 devlink_port->index,
39e6160e 7419 &devlink_port->param_list,
c1e5786d
VV		 7420 params, params_count,
7421 DEVLINK_CMD_PORT_PARAM_DEL);
39e6160e
VV		 7422}
7423EXPORT_SYMBOL_GPL(devlink_port_params_unregister);
7424
ffd19b9a
VV		 7425static int
7426__devlink_param_driverinit_value_get(struct list_head *param_list, u32 param_id,
7427 union devlink_param_value *init_val)
ec01aeb1
MS		 7428{
7429 struct devlink_param_item *param_item;
7430
ffd19b9a 7431 param_item = devlink_param_find_by_id(param_list, param_id);
ec01aeb1
MS		 7432 if (!param_item)
7433 return -EINVAL;
7434
7435 if (!param_item->driverinit_value_valid ||
7436 !devlink_param_cmode_is_supported(param_item->param,
7437 DEVLINK_PARAM_CMODE_DRIVERINIT))
7438 return -EOPNOTSUPP;
7439
1276534c
MS		 7440 if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
7441 strcpy(init_val->vstr, param_item->driverinit_value.vstr);
7442 else
7443 *init_val = param_item->driverinit_value;
ec01aeb1
MS		 7444
7445 return 0;
7446}
ffd19b9a 7447
5473a7bd
VV		 7448static int
7449__devlink_param_driverinit_value_set(struct devlink *devlink,
c1e5786d 7450 unsigned int port_index,
5473a7bd
VV		 7451 struct list_head *param_list, u32 param_id,
7452 union devlink_param_value init_val,
7453 enum devlink_command cmd)
7454{
7455 struct devlink_param_item *param_item;
7456
7457 param_item = devlink_param_find_by_id(param_list, param_id);
7458 if (!param_item)
7459 return -EINVAL;
7460
7461 if (!devlink_param_cmode_is_supported(param_item->param,
7462 DEVLINK_PARAM_CMODE_DRIVERINIT))
7463 return -EOPNOTSUPP;
7464
7465 if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
7466 strcpy(param_item->driverinit_value.vstr, init_val.vstr);
7467 else
7468 param_item->driverinit_value = init_val;
7469 param_item->driverinit_value_valid = true;
7470
c1e5786d 7471 devlink_param_notify(devlink, port_index, param_item, cmd);
5473a7bd
VV		 7472 return 0;
7473}
7474
ffd19b9a
VV		 7475/**
7476 * devlink_param_driverinit_value_get - get configuration parameter
7477 * value for driver initializing
7478 *
7479 * @devlink: devlink
7480 * @param_id: parameter ID
7481 * @init_val: value of parameter in driverinit configuration mode
7482 *
7483 * This function should be used by the driver to get driverinit
7484 * configuration for initialization after reload command.
7485 */
7486int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
7487 union devlink_param_value *init_val)
7488{
97691069 7489 if (!devlink_reload_supported(devlink))
ffd19b9a
VV		 7490 return -EOPNOTSUPP;
7491
7492 return __devlink_param_driverinit_value_get(&devlink->param_list,
7493 param_id, init_val);
7494}
ec01aeb1
MS		 7495EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_get);
7496
7497/**
7498 * devlink_param_driverinit_value_set - set value of configuration
7499 * parameter for driverinit
7500 * configuration mode
7501 *
7502 * @devlink: devlink
7503 * @param_id: parameter ID
7504 * @init_val: value of parameter to set for driverinit configuration mode
7505 *
7506 * This function should be used by the driver to set driverinit
7507 * configuration mode default value.
7508 */
7509int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
7510 union devlink_param_value init_val)
7511{
c1e5786d 7512 return __devlink_param_driverinit_value_set(devlink, 0,
5473a7bd
VV		 7513 &devlink->param_list,
7514 param_id, init_val,
7515 DEVLINK_CMD_PARAM_NEW);
ec01aeb1
MS		 7516}
7517EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_set);
7518
ffd19b9a
VV		 7519/**
7520 * devlink_port_param_driverinit_value_get - get configuration parameter
7521 * value for driver initializing
7522 *
7523 * @devlink_port: devlink_port
7524 * @param_id: parameter ID
7525 * @init_val: value of parameter in driverinit configuration mode
7526 *
7527 * This function should be used by the driver to get driverinit
7528 * configuration for initialization after reload command.
7529 */
7530int devlink_port_param_driverinit_value_get(struct devlink_port *devlink_port,
7531 u32 param_id,
7532 union devlink_param_value *init_val)
7533{
7534 struct devlink *devlink = devlink_port->devlink;
7535
97691069 7536 if (!devlink_reload_supported(devlink))
ffd19b9a
VV		 7537 return -EOPNOTSUPP;
7538
7539 return __devlink_param_driverinit_value_get(&devlink_port->param_list,
7540 param_id, init_val);
7541}
7542EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_get);
7543
5473a7bd
VV		 7544/**
7545 * devlink_port_param_driverinit_value_set - set value of configuration
7546 * parameter for driverinit
7547 * configuration mode
7548 *
7549 * @devlink_port: devlink_port
7550 * @param_id: parameter ID
7551 * @init_val: value of parameter to set for driverinit configuration mode
7552 *
7553 * This function should be used by the driver to set driverinit
7554 * configuration mode default value.
7555 */
7556int devlink_port_param_driverinit_value_set(struct devlink_port *devlink_port,
7557 u32 param_id,
7558 union devlink_param_value init_val)
7559{
7560 return __devlink_param_driverinit_value_set(devlink_port->devlink,
c1e5786d 7561 devlink_port->index,
5473a7bd 7562 &devlink_port->param_list,
c1e5786d
VV		 7563 param_id, init_val,
7564 DEVLINK_CMD_PORT_PARAM_NEW);
5473a7bd
VV		 7565}
7566EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_set);
7567
ea601e17
MS		 7568/**
7569 * devlink_param_value_changed - notify devlink on a parameter's value
7570 * change. Should be called by the driver
7571 * right after the change.
7572 *
7573 * @devlink: devlink
7574 * @param_id: parameter ID
7575 *
7576 * This function should be used by the driver to notify devlink on value
7577 * change, excluding driverinit configuration mode.
7578 * For driverinit configuration mode driver should use the function
ea601e17
MS		 7579 */
7580void devlink_param_value_changed(struct devlink *devlink, u32 param_id)
7581{
7582 struct devlink_param_item *param_item;
7583
7584 param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
7585 WARN_ON(!param_item);
7586
c1e5786d 7587 devlink_param_notify(devlink, 0, param_item, DEVLINK_CMD_PARAM_NEW);
ea601e17
MS		 7588}
7589EXPORT_SYMBOL_GPL(devlink_param_value_changed);
7590
c1e5786d
VV		 7591/**
7592 * devlink_port_param_value_changed - notify devlink on a parameter's value
7593 * change. Should be called by the driver
7594 * right after the change.
7595 *
7596 * @devlink_port: devlink_port
7597 * @param_id: parameter ID
7598 *
7599 * This function should be used by the driver to notify devlink on value
7600 * change, excluding driverinit configuration mode.
7601 * For driverinit configuration mode driver should use the function
7602 * devlink_port_param_driverinit_value_set() instead.
7603 */
7604void devlink_port_param_value_changed(struct devlink_port *devlink_port,
7605 u32 param_id)
7606{
7607 struct devlink_param_item *param_item;
7608
7609 param_item = devlink_param_find_by_id(&devlink_port->param_list,
7610 param_id);
7611 WARN_ON(!param_item);
7612
7613 devlink_param_notify(devlink_port->devlink, devlink_port->index,
7614 param_item, DEVLINK_CMD_PORT_PARAM_NEW);
7615}
7616EXPORT_SYMBOL_GPL(devlink_port_param_value_changed);
7617
bde74ad1
MS		 7618/**
7619 * devlink_param_value_str_fill - Safely fill-up the string preventing
7620 * from overflow of the preallocated buffer
7621 *
7622 * @dst_val: destination devlink_param_value
7623 * @src: source buffer
7624 */
7625void devlink_param_value_str_fill(union devlink_param_value *dst_val,
7626 const char *src)
7627{
7628 size_t len;
7629
7630 len = strlcpy(dst_val->vstr, src, __DEVLINK_PARAM_MAX_STRING_VALUE);
7631 WARN_ON(len >= __DEVLINK_PARAM_MAX_STRING_VALUE);
7632}
7633EXPORT_SYMBOL_GPL(devlink_param_value_str_fill);
7634
b16ebe92
AV		 7635/**
7636 * devlink_region_create - create a new address region
7637 *
7638 * @devlink: devlink
7639 * @region_name: region name
7640 * @region_max_snapshots: Maximum supported number of snapshots for region
7641 * @region_size: size of region
7642 */
7643struct devlink_region *devlink_region_create(struct devlink *devlink,
7644 const char *region_name,
7645 u32 region_max_snapshots,
7646 u64 region_size)
7647{
7648 struct devlink_region *region;
7649 int err = 0;
7650
7651 mutex_lock(&devlink->lock);
7652
7653 if (devlink_region_get_by_name(devlink, region_name)) {
7654 err = -EEXIST;
7655 goto unlock;
7656 }
7657
7658 region = kzalloc(sizeof(*region), GFP_KERNEL);
7659 if (!region) {
7660 err = -ENOMEM;
7661 goto unlock;
7662 }
7663
7664 region->devlink = devlink;
7665 region->max_snapshots = region_max_snapshots;
7666 region->name = region_name;
7667 region->size = region_size;
7668 INIT_LIST_HEAD(&region->snapshot_list);
7669 list_add_tail(&region->list, &devlink->region_list);
866319bb 7670 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
b16ebe92
AV		 7671
7672 mutex_unlock(&devlink->lock);
7673 return region;
7674
7675unlock:
7676 mutex_unlock(&devlink->lock);
7677 return ERR_PTR(err);
7678}
7679EXPORT_SYMBOL_GPL(devlink_region_create);
7680
7681/**
7682 * devlink_region_destroy - destroy address region
7683 *
7684 * @region: devlink region to destroy
7685 */
7686void devlink_region_destroy(struct devlink_region *region)
7687{
7688 struct devlink *devlink = region->devlink;
d7e52722 7689 struct devlink_snapshot *snapshot, *ts;
b16ebe92
AV		 7690
7691 mutex_lock(&devlink->lock);
d7e52722
AV		 7692
7693 /* Free all snapshots of region */
7694 list_for_each_entry_safe(snapshot, ts, &region->snapshot_list, list)
92b49822 7695 devlink_region_snapshot_del(region, snapshot);
d7e52722 7696
b16ebe92 7697 list_del(&region->list);
866319bb
AV		 7698
7699 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL);
b16ebe92
AV		 7700 mutex_unlock(&devlink->lock);
7701 kfree(region);
7702}
7703EXPORT_SYMBOL_GPL(devlink_region_destroy);
7704
ccadfa44 7705/**
b0efcae5 7706 * devlink_region_snapshot_id_get - get snapshot ID
ccadfa44
AV		 7707 *
7708 * This callback should be called when adding a new snapshot,
7709 * Driver should use the same id for multiple snapshots taken
7710 * on multiple regions at the same time/by the same trigger.
7711 *
7712 * @devlink: devlink
7713 */
b0efcae5 7714u32 devlink_region_snapshot_id_get(struct devlink *devlink)
ccadfa44
AV		 7715{
7716 u32 id;
7717
7718 mutex_lock(&devlink->lock);
7719 id = ++devlink->snapshot_id;
7720 mutex_unlock(&devlink->lock);
7721
7722 return id;
7723}
b0efcae5 7724EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_get);
ccadfa44 7725
d7e52722
AV		 7726/**
7727 * devlink_region_snapshot_create - create a new snapshot
7728 * This will add a new snapshot of a region. The snapshot
7729 * will be stored on the region struct and can be accessed
7730 * from devlink. This is useful for future analyses of snapshots.
7731 * Multiple snapshots can be created on a region.
7732 * The @snapshot_id should be obtained using the getter function.
7733 *
eeaadd82 7734 * @region: devlink region of the snapshot
d7e52722
AV		 7735 * @data: snapshot data
7736 * @snapshot_id: snapshot id to be created
7737 * @data_destructor: pointer to destructor function to free data
7738 */
3a5e5234 7739int devlink_region_snapshot_create(struct devlink_region *region,
d7e52722
AV		 7740 u8 *data, u32 snapshot_id,
7741 devlink_snapshot_data_dest_t *data_destructor)
7742{
7743 struct devlink *devlink = region->devlink;
7744 struct devlink_snapshot *snapshot;
7745 int err;
7746
7747 mutex_lock(&devlink->lock);
7748
7749 /* check if region can hold one more snapshot */
7750 if (region->cur_snapshots == region->max_snapshots) {
7751 err = -ENOMEM;
7752 goto unlock;
7753 }
7754
7755 if (devlink_region_snapshot_get_by_id(region, snapshot_id)) {
7756 err = -EEXIST;
7757 goto unlock;
7758 }
7759
7760 snapshot = kzalloc(sizeof(*snapshot), GFP_KERNEL);
7761 if (!snapshot) {
7762 err = -ENOMEM;
7763 goto unlock;
7764 }
7765
7766 snapshot->id = snapshot_id;
7767 snapshot->region = region;
7768 snapshot->data = data;
d7e52722
AV		 7769 snapshot->data_destructor = data_destructor;
7770
7771 list_add_tail(&snapshot->list, &region->snapshot_list);
7772
7773 region->cur_snapshots++;
7774
866319bb 7775 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_NEW);
d7e52722
AV		 7776 mutex_unlock(&devlink->lock);
7777 return 0;
7778
7779unlock:
7780 mutex_unlock(&devlink->lock);
7781 return err;
7782}
7783EXPORT_SYMBOL_GPL(devlink_region_snapshot_create);
7784
0f420b6c
IS		 7785#define DEVLINK_TRAP(_id, _type) \
7786 { \
7787 .type = DEVLINK_TRAP_TYPE_##_type, \
7788 .id = DEVLINK_TRAP_GENERIC_ID_##_id, \
7789 .name = DEVLINK_TRAP_GENERIC_NAME_##_id, \
7790 }
7791
7792static const struct devlink_trap devlink_trap_generic[] = {
391203ab
IS		 7793 DEVLINK_TRAP(SMAC_MC, DROP),
7794 DEVLINK_TRAP(VLAN_TAG_MISMATCH, DROP),
7795 DEVLINK_TRAP(INGRESS_VLAN_FILTER, DROP),
7796 DEVLINK_TRAP(INGRESS_STP_FILTER, DROP),
7797 DEVLINK_TRAP(EMPTY_TX_LIST, DROP),
7798 DEVLINK_TRAP(PORT_LOOPBACK_FILTER, DROP),
7799 DEVLINK_TRAP(BLACKHOLE_ROUTE, DROP),
7800 DEVLINK_TRAP(TTL_ERROR, EXCEPTION),
7801 DEVLINK_TRAP(TAIL_DROP, DROP),
6896cc4d
AC		 7802 DEVLINK_TRAP(NON_IP_PACKET, DROP),
7803 DEVLINK_TRAP(UC_DIP_MC_DMAC, DROP),
7804 DEVLINK_TRAP(DIP_LB, DROP),
7805 DEVLINK_TRAP(SIP_MC, DROP),
7806 DEVLINK_TRAP(SIP_LB, DROP),
7807 DEVLINK_TRAP(CORRUPTED_IP_HDR, DROP),
7808 DEVLINK_TRAP(IPV4_SIP_BC, DROP),
7809 DEVLINK_TRAP(IPV6_MC_DIP_RESERVED_SCOPE, DROP),
7810 DEVLINK_TRAP(IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE, DROP),
3b063ae5
AC		 7811 DEVLINK_TRAP(MTU_ERROR, EXCEPTION),
7812 DEVLINK_TRAP(UNRESOLVED_NEIGH, EXCEPTION),
7813 DEVLINK_TRAP(RPF, EXCEPTION),
7814 DEVLINK_TRAP(REJECT_ROUTE, EXCEPTION),
7815 DEVLINK_TRAP(IPV4_LPM_UNICAST_MISS, EXCEPTION),
7816 DEVLINK_TRAP(IPV6_LPM_UNICAST_MISS, EXCEPTION),
95f0ead8 7817 DEVLINK_TRAP(NON_ROUTABLE, DROP),
13c056ec 7818 DEVLINK_TRAP(DECAP_ERROR, EXCEPTION),
c3cae491 7819 DEVLINK_TRAP(OVERLAY_SMAC_MC, DROP),
ecd942a0
JP		 7820 DEVLINK_TRAP(INGRESS_FLOW_ACTION_DROP, DROP),
7821 DEVLINK_TRAP(EGRESS_FLOW_ACTION_DROP, DROP),
0f420b6c
IS		 7822};
7823
7824#define DEVLINK_TRAP_GROUP(_id) \
7825 { \
7826 .id = DEVLINK_TRAP_GROUP_GENERIC_ID_##_id, \
7827 .name = DEVLINK_TRAP_GROUP_GENERIC_NAME_##_id, \
7828 }
7829
7830static const struct devlink_trap_group devlink_trap_group_generic[] = {
391203ab
IS		 7831 DEVLINK_TRAP_GROUP(L2_DROPS),
7832 DEVLINK_TRAP_GROUP(L3_DROPS),
7833 DEVLINK_TRAP_GROUP(BUFFER_DROPS),
13c056ec 7834 DEVLINK_TRAP_GROUP(TUNNEL_DROPS),
ecd942a0 7835 DEVLINK_TRAP_GROUP(ACL_DROPS),
0f420b6c
IS		 7836};
7837
7838static int devlink_trap_generic_verify(const struct devlink_trap *trap)
7839{
7840 if (trap->id > DEVLINK_TRAP_GENERIC_ID_MAX)
7841 return -EINVAL;
7842
7843 if (strcmp(trap->name, devlink_trap_generic[trap->id].name))
7844 return -EINVAL;
7845
7846 if (trap->type != devlink_trap_generic[trap->id].type)
7847 return -EINVAL;
7848
7849 return 0;
7850}
7851
7852static int devlink_trap_driver_verify(const struct devlink_trap *trap)
7853{
7854 int i;
7855
7856 if (trap->id <= DEVLINK_TRAP_GENERIC_ID_MAX)
7857 return -EINVAL;
7858
7859 for (i = 0; i < ARRAY_SIZE(devlink_trap_generic); i++) {
7860 if (!strcmp(trap->name, devlink_trap_generic[i].name))
7861 return -EEXIST;
7862 }
7863
7864 return 0;
7865}
7866
7867static int devlink_trap_verify(const struct devlink_trap *trap)
7868{
7869 if (!trap || !trap->name || !trap->group.name)
7870 return -EINVAL;
7871
7872 if (trap->generic)
7873 return devlink_trap_generic_verify(trap);
7874 else
7875 return devlink_trap_driver_verify(trap);
7876}
7877
7878static int
7879devlink_trap_group_generic_verify(const struct devlink_trap_group *group)
7880{
7881 if (group->id > DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
7882 return -EINVAL;
7883
7884 if (strcmp(group->name, devlink_trap_group_generic[group->id].name))
7885 return -EINVAL;
7886
7887 return 0;
7888}
7889
7890static int
7891devlink_trap_group_driver_verify(const struct devlink_trap_group *group)
7892{
7893 int i;
7894
7895 if (group->id <= DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
7896 return -EINVAL;
7897
7898 for (i = 0; i < ARRAY_SIZE(devlink_trap_group_generic); i++) {
7899 if (!strcmp(group->name, devlink_trap_group_generic[i].name))
7900 return -EEXIST;
7901 }
7902
7903 return 0;
7904}
7905
7906static int devlink_trap_group_verify(const struct devlink_trap_group *group)
7907{
7908 if (group->generic)
7909 return devlink_trap_group_generic_verify(group);
7910 else
7911 return devlink_trap_group_driver_verify(group);
7912}
7913
7914static void
7915devlink_trap_group_notify(struct devlink *devlink,
7916 const struct devlink_trap_group_item *group_item,
7917 enum devlink_command cmd)
7918{
7919 struct sk_buff *msg;
7920 int err;
7921
7922 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_GROUP_NEW &&
7923 cmd != DEVLINK_CMD_TRAP_GROUP_DEL);
7924
7925 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7926 if (!msg)
7927 return;
7928
7929 err = devlink_nl_trap_group_fill(msg, devlink, group_item, cmd, 0, 0,
7930 0);
7931 if (err) {
7932 nlmsg_free(msg);
7933 return;
7934 }
7935
7936 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
7937 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
7938}
7939
7940static struct devlink_trap_group_item *
7941devlink_trap_group_item_create(struct devlink *devlink,
7942 const struct devlink_trap_group *group)
7943{
7944 struct devlink_trap_group_item *group_item;
7945 int err;
7946
7947 err = devlink_trap_group_verify(group);
7948 if (err)
7949 return ERR_PTR(err);
7950
7951 group_item = kzalloc(sizeof(*group_item), GFP_KERNEL);
7952 if (!group_item)
7953 return ERR_PTR(-ENOMEM);
7954
7955 group_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
7956 if (!group_item->stats) {
7957 err = -ENOMEM;
7958 goto err_stats_alloc;
7959 }
7960
7961 group_item->group = group;
7962 refcount_set(&group_item->refcount, 1);
7963
7964 if (devlink->ops->trap_group_init) {
7965 err = devlink->ops->trap_group_init(devlink, group);
7966 if (err)
7967 goto err_group_init;
7968 }
7969
7970 list_add_tail(&group_item->list, &devlink->trap_group_list);
7971 devlink_trap_group_notify(devlink, group_item,
7972 DEVLINK_CMD_TRAP_GROUP_NEW);
7973
7974 return group_item;
7975
7976err_group_init:
7977 free_percpu(group_item->stats);
7978err_stats_alloc:
7979 kfree(group_item);
7980 return ERR_PTR(err);
7981}
7982
7983static void
7984devlink_trap_group_item_destroy(struct devlink *devlink,
7985 struct devlink_trap_group_item *group_item)
7986{
7987 devlink_trap_group_notify(devlink, group_item,
7988 DEVLINK_CMD_TRAP_GROUP_DEL);
7989 list_del(&group_item->list);
7990 free_percpu(group_item->stats);
7991 kfree(group_item);
7992}
7993
7994static struct devlink_trap_group_item *
7995devlink_trap_group_item_get(struct devlink *devlink,
7996 const struct devlink_trap_group *group)
7997{
7998 struct devlink_trap_group_item *group_item;
7999
8000 group_item = devlink_trap_group_item_lookup(devlink, group->name);
8001 if (group_item) {
8002 refcount_inc(&group_item->refcount);
8003 return group_item;
8004 }
8005
8006 return devlink_trap_group_item_create(devlink, group);
8007}
8008
8009static void
8010devlink_trap_group_item_put(struct devlink *devlink,
8011 struct devlink_trap_group_item *group_item)
8012{
8013 if (!refcount_dec_and_test(&group_item->refcount))
8014 return;
8015
8016 devlink_trap_group_item_destroy(devlink, group_item);
8017}
8018
8019static int
8020devlink_trap_item_group_link(struct devlink *devlink,
8021 struct devlink_trap_item *trap_item)
8022{
8023 struct devlink_trap_group_item *group_item;
8024
8025 group_item = devlink_trap_group_item_get(devlink,
8026 &trap_item->trap->group);
8027 if (IS_ERR(group_item))
8028 return PTR_ERR(group_item);
8029
8030 trap_item->group_item = group_item;
8031
8032 return 0;
8033}
8034
8035static void
8036devlink_trap_item_group_unlink(struct devlink *devlink,
8037 struct devlink_trap_item *trap_item)
8038{
8039 devlink_trap_group_item_put(devlink, trap_item->group_item);
8040}
8041
8042static void devlink_trap_notify(struct devlink *devlink,
8043 const struct devlink_trap_item *trap_item,
8044 enum devlink_command cmd)
8045{
8046 struct sk_buff *msg;
8047 int err;
8048
8049 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_NEW &&
8050 cmd != DEVLINK_CMD_TRAP_DEL);
8051
8052 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8053 if (!msg)
8054 return;
8055
8056 err = devlink_nl_trap_fill(msg, devlink, trap_item, cmd, 0, 0, 0);
8057 if (err) {
8058 nlmsg_free(msg);
8059 return;
8060 }
8061
8062 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
8063 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
8064}
8065
8066static int
8067devlink_trap_register(struct devlink *devlink,
8068 const struct devlink_trap *trap, void *priv)
8069{
8070 struct devlink_trap_item *trap_item;
8071 int err;
8072
8073 if (devlink_trap_item_lookup(devlink, trap->name))
8074 return -EEXIST;
8075
8076 trap_item = kzalloc(sizeof(*trap_item), GFP_KERNEL);
8077 if (!trap_item)
8078 return -ENOMEM;
8079
8080 trap_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
8081 if (!trap_item->stats) {
8082 err = -ENOMEM;
8083 goto err_stats_alloc;
8084 }
8085
8086 trap_item->trap = trap;
8087 trap_item->action = trap->init_action;
8088 trap_item->priv = priv;
8089
8090 err = devlink_trap_item_group_link(devlink, trap_item);
8091 if (err)
8092 goto err_group_link;
8093
8094 err = devlink->ops->trap_init(devlink, trap, trap_item);
8095 if (err)
8096 goto err_trap_init;
8097
8098 list_add_tail(&trap_item->list, &devlink->trap_list);
8099 devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_NEW);
8100
8101 return 0;
8102
8103err_trap_init:
8104 devlink_trap_item_group_unlink(devlink, trap_item);
8105err_group_link:
8106 free_percpu(trap_item->stats);
8107err_stats_alloc:
8108 kfree(trap_item);
8109 return err;
8110}
8111
8112static void devlink_trap_unregister(struct devlink *devlink,
8113 const struct devlink_trap *trap)
8114{
8115 struct devlink_trap_item *trap_item;
8116
8117 trap_item = devlink_trap_item_lookup(devlink, trap->name);
8118 if (WARN_ON_ONCE(!trap_item))
8119 return;
8120
8121 devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_DEL);
8122 list_del(&trap_item->list);
8123 if (devlink->ops->trap_fini)
8124 devlink->ops->trap_fini(devlink, trap, trap_item);
8125 devlink_trap_item_group_unlink(devlink, trap_item);
8126 free_percpu(trap_item->stats);
8127 kfree(trap_item);
8128}
8129
8130static void devlink_trap_disable(struct devlink *devlink,
8131 const struct devlink_trap *trap)
8132{
8133 struct devlink_trap_item *trap_item;
8134
8135 trap_item = devlink_trap_item_lookup(devlink, trap->name);
8136 if (WARN_ON_ONCE(!trap_item))
8137 return;
8138
8139 devlink->ops->trap_action_set(devlink, trap, DEVLINK_TRAP_ACTION_DROP);
8140 trap_item->action = DEVLINK_TRAP_ACTION_DROP;
8141}
8142
8143/**
8144 * devlink_traps_register - Register packet traps with devlink.
8145 * @devlink: devlink.
8146 * @traps: Packet traps.
8147 * @traps_count: Count of provided packet traps.
8148 * @priv: Driver private information.
8149 *
8150 * Return: Non-zero value on failure.
8151 */
8152int devlink_traps_register(struct devlink *devlink,
8153 const struct devlink_trap *traps,
8154 size_t traps_count, void *priv)
8155{
8156 int i, err;
8157
8158 if (!devlink->ops->trap_init || !devlink->ops->trap_action_set)
8159 return -EINVAL;
8160
8161 mutex_lock(&devlink->lock);
8162 for (i = 0; i < traps_count; i++) {
8163 const struct devlink_trap *trap = &traps[i];
8164
8165 err = devlink_trap_verify(trap);
8166 if (err)
8167 goto err_trap_verify;
8168
8169 err = devlink_trap_register(devlink, trap, priv);
8170 if (err)
8171 goto err_trap_register;
8172 }
8173 mutex_unlock(&devlink->lock);
8174
8175 return 0;
8176
8177err_trap_register:
8178err_trap_verify:
8179 for (i--; i >= 0; i--)
8180 devlink_trap_unregister(devlink, &traps[i]);
8181 mutex_unlock(&devlink->lock);
8182 return err;
8183}
8184EXPORT_SYMBOL_GPL(devlink_traps_register);
8185
8186/**
8187 * devlink_traps_unregister - Unregister packet traps from devlink.
8188 * @devlink: devlink.
8189 * @traps: Packet traps.
8190 * @traps_count: Count of provided packet traps.
8191 */
8192void devlink_traps_unregister(struct devlink *devlink,
8193 const struct devlink_trap *traps,
8194 size_t traps_count)
8195{
8196 int i;
8197
8198 mutex_lock(&devlink->lock);
8199 /* Make sure we do not have any packets in-flight while unregistering
8200 * traps by disabling all of them and waiting for a grace period.
8201 */
8202 for (i = traps_count - 1; i >= 0; i--)
8203 devlink_trap_disable(devlink, &traps[i]);
8204 synchronize_rcu();
8205 for (i = traps_count - 1; i >= 0; i--)
8206 devlink_trap_unregister(devlink, &traps[i]);
8207 mutex_unlock(&devlink->lock);
8208}
8209EXPORT_SYMBOL_GPL(devlink_traps_unregister);
8210
8211static void
8212devlink_trap_stats_update(struct devlink_stats __percpu *trap_stats,
8213 size_t skb_len)
8214{
8215 struct devlink_stats *stats;
8216
8217 stats = this_cpu_ptr(trap_stats);
8218 u64_stats_update_begin(&stats->syncp);
8219 stats->rx_bytes += skb_len;
8220 stats->rx_packets++;
8221 u64_stats_update_end(&stats->syncp);
8222}
8223
8224static void
8225devlink_trap_report_metadata_fill(struct net_dm_hw_metadata *hw_metadata,
8226 const struct devlink_trap_item *trap_item,
5a2e106c
JP		 8227 struct devlink_port *in_devlink_port,
8228 const struct flow_action_cookie *fa_cookie)
0f420b6c
IS		 8229{
8230 struct devlink_trap_group_item *group_item = trap_item->group_item;
8231
8232 hw_metadata->trap_group_name = group_item->group->name;
8233 hw_metadata->trap_name = trap_item->trap->name;
5a2e106c 8234 hw_metadata->fa_cookie = fa_cookie;
0f420b6c
IS		 8235
8236 spin_lock(&in_devlink_port->type_lock);
8237 if (in_devlink_port->type == DEVLINK_PORT_TYPE_ETH)
8238 hw_metadata->input_dev = in_devlink_port->type_dev;
8239 spin_unlock(&in_devlink_port->type_lock);
8240}
8241
8242/**
8243 * devlink_trap_report - Report trapped packet to drop monitor.
8244 * @devlink: devlink.
8245 * @skb: Trapped packet.
8246 * @trap_ctx: Trap context.
8247 * @in_devlink_port: Input devlink port.
5a2e106c 8248 * @fa_cookie: Flow action cookie. Could be NULL.
0f420b6c
IS		 8249 */
8250void devlink_trap_report(struct devlink *devlink, struct sk_buff *skb,
5a2e106c
JP		 8251 void *trap_ctx, struct devlink_port *in_devlink_port,
8252 const struct flow_action_cookie *fa_cookie)
8253
0f420b6c
IS		 8254{
8255 struct devlink_trap_item *trap_item = trap_ctx;
8256 struct net_dm_hw_metadata hw_metadata = {};
8257
8258 devlink_trap_stats_update(trap_item->stats, skb->len);
8259 devlink_trap_stats_update(trap_item->group_item->stats, skb->len);
8260
8261 devlink_trap_report_metadata_fill(&hw_metadata, trap_item,
5a2e106c 8262 in_devlink_port, fa_cookie);
0f420b6c
IS		 8263 net_dm_hw_report(skb, &hw_metadata);
8264}
8265EXPORT_SYMBOL_GPL(devlink_trap_report);
8266
8267/**
8268 * devlink_trap_ctx_priv - Trap context to driver private information.
8269 * @trap_ctx: Trap context.
8270 *
8271 * Return: Driver private information passed during registration.
8272 */
8273void *devlink_trap_ctx_priv(void *trap_ctx)
8274{
8275 struct devlink_trap_item *trap_item = trap_ctx;
8276
8277 return trap_item->priv;
8278}
8279EXPORT_SYMBOL_GPL(devlink_trap_ctx_priv);
8280
ddb6e99e
JK		 8281static void __devlink_compat_running_version(struct devlink *devlink,
8282 char *buf, size_t len)
8283{
8284 const struct nlattr *nlattr;
8285 struct devlink_info_req req;
8286 struct sk_buff *msg;
8287 int rem, err;
8288
ddb6e99e
JK		 8289 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8290 if (!msg)
8291 return;
8292
8293 req.msg = msg;
8294 err = devlink->ops->info_get(devlink, &req, NULL);
8295 if (err)
8296 goto free_msg;
8297
8298 nla_for_each_attr(nlattr, (void *)msg->data, msg->len, rem) {
8299 const struct nlattr *kv;
8300 int rem_kv;
8301
8302 if (nla_type(nlattr) != DEVLINK_ATTR_INFO_VERSION_RUNNING)
8303 continue;
8304
8305 nla_for_each_nested(kv, nlattr, rem_kv) {
8306 if (nla_type(kv) != DEVLINK_ATTR_INFO_VERSION_VALUE)
8307 continue;
8308
8309 strlcat(buf, nla_data(kv), len);
8310 strlcat(buf, " ", len);
8311 }
8312 }
8313free_msg:
8314 nlmsg_free(msg);
8315}
8316
8317void devlink_compat_running_version(struct net_device *dev,
8318 char *buf, size_t len)
8319{
ddb6e99e
JK		 8320 struct devlink *devlink;
8321
1b45ff6c
JK		 8322 dev_hold(dev);
8323 rtnl_unlock();
8324
b473b0d2 8325 devlink = netdev_to_devlink(dev);
be6fe1d8 8326 if (!devlink || !devlink->ops->info_get)
e0dcd386 8327 goto out;
b473b0d2
JK		 8328
8329 mutex_lock(&devlink->lock);
8330 __devlink_compat_running_version(devlink, buf, len);
8331 mutex_unlock(&devlink->lock);
1b45ff6c 8332
e0dcd386 8333out:
1b45ff6c
JK		 8334 rtnl_lock();
8335 dev_put(dev);
ddb6e99e
JK		 8336}
8337
4eceba17
JK		 8338int devlink_compat_flash_update(struct net_device *dev, const char *file_name)
8339{
4eceba17 8340 struct devlink *devlink;
e0dcd386 8341 int ret;
4eceba17 8342
1b45ff6c
JK		 8343 dev_hold(dev);
8344 rtnl_unlock();
8345
b473b0d2 8346 devlink = netdev_to_devlink(dev);
e0dcd386
JP		 8347 if (!devlink || !devlink->ops->flash_update) {
8348 ret = -EOPNOTSUPP;
8349 goto out;
8350 }
4eceba17 8351
b473b0d2
JK		 8352 mutex_lock(&devlink->lock);
8353 ret = devlink->ops->flash_update(devlink, file_name, NULL, NULL);
8354 mutex_unlock(&devlink->lock);
1b45ff6c 8355
e0dcd386 8356out:
1b45ff6c
JK		 8357 rtnl_lock();
8358 dev_put(dev);
8359
b473b0d2 8360 return ret;
4eceba17
JK		 8361}
8362
af3836df
JP		 8363int devlink_compat_phys_port_name_get(struct net_device *dev,
8364 char *name, size_t len)
8365{
8366 struct devlink_port *devlink_port;
8367
8368 /* RTNL mutex is held here which ensures that devlink_port
8369 * instance cannot disappear in the middle. No need to take
8370 * any devlink lock as only permanent values are accessed.
8371 */
8372 ASSERT_RTNL();
8373
8374 devlink_port = netdev_to_devlink_port(dev);
8375 if (!devlink_port)
8376 return -EOPNOTSUPP;
8377
8378 return __devlink_port_phys_port_name_get(devlink_port, name, len);
8379}
8380
7e1146e8
JP		 8381int devlink_compat_switch_id_get(struct net_device *dev,
8382 struct netdev_phys_item_id *ppid)
8383{
8384 struct devlink_port *devlink_port;
8385
043b8413
VB		 8386 /* Caller must hold RTNL mutex or reference to dev, which ensures that
8387 * devlink_port instance cannot disappear in the middle. No need to take
7e1146e8
JP		 8388 * any devlink lock as only permanent values are accessed.
8389 */
7e1146e8
JP		 8390 devlink_port = netdev_to_devlink_port(dev);
8391 if (!devlink_port || !devlink_port->attrs.switch_port)
8392 return -EOPNOTSUPP;
8393
8394 memcpy(ppid, &devlink_port->attrs.switch_id, sizeof(*ppid));
8395
8396 return 0;
8397}
8398
070c63f2
JP		 8399static void __net_exit devlink_pernet_pre_exit(struct net *net)
8400{
8401 struct devlink *devlink;
8402 int err;
8403
8404 /* In case network namespace is getting destroyed, reload
8405 * all devlink instances from this namespace into init_net.
8406 */
8407 mutex_lock(&devlink_mutex);
8408 list_for_each_entry(devlink, &devlink_list, list) {
8409 if (net_eq(devlink_net(devlink), net)) {
8410 if (WARN_ON(!devlink_reload_supported(devlink)))
8411 continue;
8412 err = devlink_reload(devlink, &init_net, NULL);
a0c76345 8413 if (err && err != -EOPNOTSUPP)
070c63f2
JP		 8414 pr_warn("Failed to reload devlink instance into init_net\n");
8415 }
8416 }
8417 mutex_unlock(&devlink_mutex);
8418}
8419
8420static struct pernet_operations devlink_pernet_ops __net_initdata = {
8421 .pre_exit = devlink_pernet_pre_exit,
8422};
8423
f4b6bcc7 8424static int __init devlink_init(void)
bfcd3a46 8425{
070c63f2
JP		 8426 int err;
8427
8428 err = genl_register_family(&devlink_nl_family);
8429 if (err)
8430 goto out;
8431 err = register_pernet_subsys(&devlink_pernet_ops);
8432
8433out:
8434 WARN_ON(err);
8435 return err;
bfcd3a46
JP		 8436}
8437
f4b6bcc7 8438subsys_initcall(devlink_init);
Linux 6.x block layer and io_uring tree(s)