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devlink: factor out building a snapshot notification
[linux-2.6-block.git] / net / core / devlink.c
CommitLineData
2874c5fd 1// SPDX-License-Identifier: GPL-2.0-or-later
bfcd3a46
JP		 2/*
3 * net/core/devlink.c - Network physical/parent device Netlink interface
4 *
5 * Heavily inspired by net/wireless/
6 * Copyright (c) 2016 Mellanox Technologies. All rights reserved.
7 * Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com>
bfcd3a46
JP		 8 */
9
10#include <linux/kernel.h>
11#include <linux/module.h>
12#include <linux/types.h>
13#include <linux/slab.h>
14#include <linux/gfp.h>
15#include <linux/device.h>
16#include <linux/list.h>
17#include <linux/netdevice.h>
b8f97554 18#include <linux/spinlock.h>
b587bdaf 19#include <linux/refcount.h>
136bf27f 20#include <linux/workqueue.h>
0f420b6c
IS		 21#include <linux/u64_stats_sync.h>
22#include <linux/timekeeping.h>
bfcd3a46
JP		 23#include <rdma/ib_verbs.h>
24#include <net/netlink.h>
25#include <net/genetlink.h>
26#include <net/rtnetlink.h>
27#include <net/net_namespace.h>
28#include <net/sock.h>
29#include <net/devlink.h>
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;
e8937681 347 const struct devlink_region_ops *ops;
b16ebe92
AV		 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;
d7e52722
AV		 357 u8 *data;
358 u32 id;
359};
360
b16ebe92
AV		 361static struct devlink_region *
362devlink_region_get_by_name(struct devlink *devlink, const char *region_name)
363{
364 struct devlink_region *region;
365
366 list_for_each_entry(region, &devlink->region_list, list)
e8937681 367 if (!strcmp(region->ops->name, region_name))
b16ebe92
AV		 368 return region;
369
370 return NULL;
371}
372
d7e52722
AV		 373static struct devlink_snapshot *
374devlink_region_snapshot_get_by_id(struct devlink_region *region, u32 id)
375{
376 struct devlink_snapshot *snapshot;
377
378 list_for_each_entry(snapshot, &region->snapshot_list, list)
379 if (snapshot->id == id)
380 return snapshot;
381
382 return NULL;
383}
384
1fc2257e
JP		 385#define DEVLINK_NL_FLAG_NEED_DEVLINK BIT(0)
386#define DEVLINK_NL_FLAG_NEED_PORT BIT(1)
bf797471 387#define DEVLINK_NL_FLAG_NEED_SB BIT(2)
2406e7e5
AS		 388
389/* The per devlink instance lock is taken by default in the pre-doit
390 * operation, yet several commands do not require this. The global
391 * devlink lock is taken and protects from disruption by user-calls.
392 */
393#define DEVLINK_NL_FLAG_NO_LOCK BIT(3)
bfcd3a46
JP		 394
395static int devlink_nl_pre_doit(const struct genl_ops *ops,
396 struct sk_buff *skb, struct genl_info *info)
397{
398 struct devlink *devlink;
2406e7e5 399 int err;
bfcd3a46
JP		 400
401 mutex_lock(&devlink_mutex);
402 devlink = devlink_get_from_info(info);
403 if (IS_ERR(devlink)) {
404 mutex_unlock(&devlink_mutex);
405 return PTR_ERR(devlink);
406 }
2406e7e5
AS		 407 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
408 mutex_lock(&devlink->lock);
1fc2257e
JP		 409 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_DEVLINK) {
410 info->user_ptr[0] = devlink;
411 } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT) {
bfcd3a46
JP		 412 struct devlink_port *devlink_port;
413
bfcd3a46
JP		 414 devlink_port = devlink_port_get_from_info(devlink, info);
415 if (IS_ERR(devlink_port)) {
2406e7e5
AS		 416 err = PTR_ERR(devlink_port);
417 goto unlock;
bfcd3a46 418 }
1fc2257e 419 info->user_ptr[0] = devlink_port;
bfcd3a46 420 }
bf797471
JP		 421 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_SB) {
422 struct devlink_sb *devlink_sb;
423
424 devlink_sb = devlink_sb_get_from_info(devlink, info);
425 if (IS_ERR(devlink_sb)) {
2406e7e5
AS		 426 err = PTR_ERR(devlink_sb);
427 goto unlock;
bf797471
JP		 428 }
429 info->user_ptr[1] = devlink_sb;
430 }
bfcd3a46 431 return 0;
2406e7e5
AS		 432
433unlock:
434 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
435 mutex_unlock(&devlink->lock);
436 mutex_unlock(&devlink_mutex);
437 return err;
bfcd3a46
JP		 438}
439
440static void devlink_nl_post_doit(const struct genl_ops *ops,
441 struct sk_buff *skb, struct genl_info *info)
442{
2406e7e5
AS		 443 struct devlink *devlink;
444
070c63f2
JP		 445 /* When devlink changes netns, it would not be found
446 * by devlink_get_from_info(). So try if it is stored first.
447 */
448 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_DEVLINK) {
449 devlink = info->user_ptr[0];
450 } else {
451 devlink = devlink_get_from_info(info);
452 WARN_ON(IS_ERR(devlink));
453 }
454 if (!IS_ERR(devlink) && ~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
2406e7e5 455 mutex_unlock(&devlink->lock);
bfcd3a46
JP		 456 mutex_unlock(&devlink_mutex);
457}
458
489111e5 459static struct genl_family devlink_nl_family;
bfcd3a46
JP		 460
461enum devlink_multicast_groups {
462 DEVLINK_MCGRP_CONFIG,
463};
464
465static const struct genl_multicast_group devlink_nl_mcgrps[] = {
466 [DEVLINK_MCGRP_CONFIG] = { .name = DEVLINK_GENL_MCGRP_CONFIG_NAME },
467};
468
469static int devlink_nl_put_handle(struct sk_buff *msg, struct devlink *devlink)
470{
471 if (nla_put_string(msg, DEVLINK_ATTR_BUS_NAME, devlink->dev->bus->name))
472 return -EMSGSIZE;
473 if (nla_put_string(msg, DEVLINK_ATTR_DEV_NAME, dev_name(devlink->dev)))
474 return -EMSGSIZE;
475 return 0;
476}
477
478static int devlink_nl_fill(struct sk_buff *msg, struct devlink *devlink,
479 enum devlink_command cmd, u32 portid,
480 u32 seq, int flags)
481{
482 void *hdr;
483
484 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
485 if (!hdr)
486 return -EMSGSIZE;
487
488 if (devlink_nl_put_handle(msg, devlink))
489 goto nla_put_failure;
2670ac26
JP		 490 if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_FAILED, devlink->reload_failed))
491 goto nla_put_failure;
bfcd3a46
JP		 492
493 genlmsg_end(msg, hdr);
494 return 0;
495
496nla_put_failure:
497 genlmsg_cancel(msg, hdr);
498 return -EMSGSIZE;
499}
500
501static void devlink_notify(struct devlink *devlink, enum devlink_command cmd)
502{
503 struct sk_buff *msg;
504 int err;
505
506 WARN_ON(cmd != DEVLINK_CMD_NEW && cmd != DEVLINK_CMD_DEL);
507
508 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
509 if (!msg)
510 return;
511
512 err = devlink_nl_fill(msg, devlink, cmd, 0, 0, 0);
513 if (err) {
514 nlmsg_free(msg);
515 return;
516 }
517
518 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
519 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
520}
521
b9ffcbaf
JP		 522static int devlink_nl_port_attrs_put(struct sk_buff *msg,
523 struct devlink_port *devlink_port)
524{
525 struct devlink_port_attrs *attrs = &devlink_port->attrs;
526
527 if (!attrs->set)
528 return 0;
5ec1380a
JP		 529 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_FLAVOUR, attrs->flavour))
530 return -EMSGSIZE;
58b6be41
PP		 531 switch (devlink_port->attrs.flavour) {
532 case DEVLINK_PORT_FLAVOUR_PCI_PF:
98fd2d65
PP		 533 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER,
534 attrs->pci_pf.pf))
535 return -EMSGSIZE;
58b6be41
PP		 536 break;
537 case DEVLINK_PORT_FLAVOUR_PCI_VF:
e41b6bf3
PP		 538 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER,
539 attrs->pci_vf.pf) ||
540 nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_VF_NUMBER,
541 attrs->pci_vf.vf))
542 return -EMSGSIZE;
58b6be41
PP		 543 break;
544 case DEVLINK_PORT_FLAVOUR_PHYSICAL:
545 case DEVLINK_PORT_FLAVOUR_CPU:
546 case DEVLINK_PORT_FLAVOUR_DSA:
acf1ee44 547 case DEVLINK_PORT_FLAVOUR_VIRTUAL:
58b6be41
PP		 548 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_NUMBER,
549 attrs->phys.port_number))
550 return -EMSGSIZE;
551 if (!attrs->split)
552 return 0;
553 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_GROUP,
554 attrs->phys.port_number))
555 return -EMSGSIZE;
556 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_SUBPORT_NUMBER,
557 attrs->phys.split_subport_number))
558 return -EMSGSIZE;
559 break;
560 default:
561 break;
98fd2d65 562 }
b9ffcbaf
JP		 563 return 0;
564}
565
bfcd3a46
JP		 566static int devlink_nl_port_fill(struct sk_buff *msg, struct devlink *devlink,
567 struct devlink_port *devlink_port,
568 enum devlink_command cmd, u32 portid,
569 u32 seq, int flags)
570{
571 void *hdr;
572
573 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
574 if (!hdr)
575 return -EMSGSIZE;
576
577 if (devlink_nl_put_handle(msg, devlink))
578 goto nla_put_failure;
579 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
580 goto nla_put_failure;
b8f97554 581
0f420b6c 582 spin_lock_bh(&devlink_port->type_lock);
bfcd3a46 583 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_TYPE, devlink_port->type))
b8f97554 584 goto nla_put_failure_type_locked;
bfcd3a46
JP		 585 if (devlink_port->desired_type != DEVLINK_PORT_TYPE_NOTSET &&
586 nla_put_u16(msg, DEVLINK_ATTR_PORT_DESIRED_TYPE,
587 devlink_port->desired_type))
b8f97554 588 goto nla_put_failure_type_locked;
bfcd3a46
JP		 589 if (devlink_port->type == DEVLINK_PORT_TYPE_ETH) {
590 struct net_device *netdev = devlink_port->type_dev;
591
592 if (netdev &&
593 (nla_put_u32(msg, DEVLINK_ATTR_PORT_NETDEV_IFINDEX,
594 netdev->ifindex) ||
595 nla_put_string(msg, DEVLINK_ATTR_PORT_NETDEV_NAME,
596 netdev->name)))
b8f97554 597 goto nla_put_failure_type_locked;
bfcd3a46
JP		 598 }
599 if (devlink_port->type == DEVLINK_PORT_TYPE_IB) {
600 struct ib_device *ibdev = devlink_port->type_dev;
601
602 if (ibdev &&
603 nla_put_string(msg, DEVLINK_ATTR_PORT_IBDEV_NAME,
604 ibdev->name))
b8f97554 605 goto nla_put_failure_type_locked;
bfcd3a46 606 }
0f420b6c 607 spin_unlock_bh(&devlink_port->type_lock);
b9ffcbaf 608 if (devlink_nl_port_attrs_put(msg, devlink_port))
bfcd3a46
JP		 609 goto nla_put_failure;
610
611 genlmsg_end(msg, hdr);
612 return 0;
613
b8f97554 614nla_put_failure_type_locked:
0f420b6c 615 spin_unlock_bh(&devlink_port->type_lock);
bfcd3a46
JP		 616nla_put_failure:
617 genlmsg_cancel(msg, hdr);
618 return -EMSGSIZE;
619}
620
621static void devlink_port_notify(struct devlink_port *devlink_port,
622 enum devlink_command cmd)
623{
624 struct devlink *devlink = devlink_port->devlink;
625 struct sk_buff *msg;
626 int err;
627
628 if (!devlink_port->registered)
629 return;
630
631 WARN_ON(cmd != DEVLINK_CMD_PORT_NEW && cmd != DEVLINK_CMD_PORT_DEL);
632
633 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
634 if (!msg)
635 return;
636
637 err = devlink_nl_port_fill(msg, devlink, devlink_port, cmd, 0, 0, 0);
638 if (err) {
639 nlmsg_free(msg);
640 return;
641 }
642
643 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
644 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
645}
646
647static int devlink_nl_cmd_get_doit(struct sk_buff *skb, struct genl_info *info)
648{
649 struct devlink *devlink = info->user_ptr[0];
650 struct sk_buff *msg;
651 int err;
652
653 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
654 if (!msg)
655 return -ENOMEM;
656
657 err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
658 info->snd_portid, info->snd_seq, 0);
659 if (err) {
660 nlmsg_free(msg);
661 return err;
662 }
663
664 return genlmsg_reply(msg, info);
665}
666
667static int devlink_nl_cmd_get_dumpit(struct sk_buff *msg,
668 struct netlink_callback *cb)
669{
670 struct devlink *devlink;
671 int start = cb->args[0];
672 int idx = 0;
673 int err;
674
675 mutex_lock(&devlink_mutex);
676 list_for_each_entry(devlink, &devlink_list, list) {
677 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
678 continue;
679 if (idx < start) {
680 idx++;
681 continue;
682 }
683 err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
684 NETLINK_CB(cb->skb).portid,
685 cb->nlh->nlmsg_seq, NLM_F_MULTI);
686 if (err)
687 goto out;
688 idx++;
689 }
690out:
691 mutex_unlock(&devlink_mutex);
692
693 cb->args[0] = idx;
694 return msg->len;
695}
696
697static int devlink_nl_cmd_port_get_doit(struct sk_buff *skb,
698 struct genl_info *info)
699{
1fc2257e
JP		 700 struct devlink_port *devlink_port = info->user_ptr[0];
701 struct devlink *devlink = devlink_port->devlink;
bfcd3a46
JP		 702 struct sk_buff *msg;
703 int err;
704
705 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
706 if (!msg)
707 return -ENOMEM;
708
709 err = devlink_nl_port_fill(msg, devlink, devlink_port,
710 DEVLINK_CMD_PORT_NEW,
711 info->snd_portid, info->snd_seq, 0);
712 if (err) {
713 nlmsg_free(msg);
714 return err;
715 }
716
717 return genlmsg_reply(msg, info);
718}
719
720static int devlink_nl_cmd_port_get_dumpit(struct sk_buff *msg,
721 struct netlink_callback *cb)
722{
723 struct devlink *devlink;
724 struct devlink_port *devlink_port;
725 int start = cb->args[0];
726 int idx = 0;
727 int err;
728
729 mutex_lock(&devlink_mutex);
bfcd3a46
JP		 730 list_for_each_entry(devlink, &devlink_list, list) {
731 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
732 continue;
2406e7e5 733 mutex_lock(&devlink->lock);
bfcd3a46
JP		 734 list_for_each_entry(devlink_port, &devlink->port_list, list) {
735 if (idx < start) {
736 idx++;
737 continue;
738 }
739 err = devlink_nl_port_fill(msg, devlink, devlink_port,
740 DEVLINK_CMD_NEW,
741 NETLINK_CB(cb->skb).portid,
742 cb->nlh->nlmsg_seq,
743 NLM_F_MULTI);
2406e7e5
AS		 744 if (err) {
745 mutex_unlock(&devlink->lock);
bfcd3a46 746 goto out;
2406e7e5 747 }
bfcd3a46
JP		 748 idx++;
749 }
2406e7e5 750 mutex_unlock(&devlink->lock);
bfcd3a46
JP		 751 }
752out:
bfcd3a46
JP		 753 mutex_unlock(&devlink_mutex);
754
755 cb->args[0] = idx;
756 return msg->len;
757}
758
759static int devlink_port_type_set(struct devlink *devlink,
760 struct devlink_port *devlink_port,
761 enum devlink_port_type port_type)
762
763{
764 int err;
765
be6fe1d8 766 if (devlink->ops->port_type_set) {
bfcd3a46
JP		 767 if (port_type == DEVLINK_PORT_TYPE_NOTSET)
768 return -EINVAL;
6edf1017
ER		 769 if (port_type == devlink_port->type)
770 return 0;
bfcd3a46
JP		 771 err = devlink->ops->port_type_set(devlink_port, port_type);
772 if (err)
773 return err;
774 devlink_port->desired_type = port_type;
775 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
776 return 0;
777 }
778 return -EOPNOTSUPP;
779}
780
781static int devlink_nl_cmd_port_set_doit(struct sk_buff *skb,
782 struct genl_info *info)
783{
1fc2257e
JP		 784 struct devlink_port *devlink_port = info->user_ptr[0];
785 struct devlink *devlink = devlink_port->devlink;
bfcd3a46
JP		 786 int err;
787
788 if (info->attrs[DEVLINK_ATTR_PORT_TYPE]) {
789 enum devlink_port_type port_type;
790
791 port_type = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_TYPE]);
792 err = devlink_port_type_set(devlink, devlink_port, port_type);
793 if (err)
794 return err;
795 }
796 return 0;
797}
798
ac0fc8a1
DA		 799static int devlink_port_split(struct devlink *devlink, u32 port_index,
800 u32 count, struct netlink_ext_ack *extack)
bfcd3a46
JP		 801
802{
be6fe1d8 803 if (devlink->ops->port_split)
ac0fc8a1
DA		 804 return devlink->ops->port_split(devlink, port_index, count,
805 extack);
bfcd3a46
JP		 806 return -EOPNOTSUPP;
807}
808
809static int devlink_nl_cmd_port_split_doit(struct sk_buff *skb,
810 struct genl_info *info)
811{
812 struct devlink *devlink = info->user_ptr[0];
813 u32 port_index;
814 u32 count;
815
816 if (!info->attrs[DEVLINK_ATTR_PORT_INDEX] ||
817 !info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT])
818 return -EINVAL;
819
820 port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
821 count = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT]);
ac0fc8a1 822 return devlink_port_split(devlink, port_index, count, info->extack);
bfcd3a46
JP		 823}
824
ac0fc8a1
DA		 825static int devlink_port_unsplit(struct devlink *devlink, u32 port_index,
826 struct netlink_ext_ack *extack)
bfcd3a46
JP		 827
828{
be6fe1d8 829 if (devlink->ops->port_unsplit)
ac0fc8a1 830 return devlink->ops->port_unsplit(devlink, port_index, extack);
bfcd3a46
JP		 831 return -EOPNOTSUPP;
832}
833
834static int devlink_nl_cmd_port_unsplit_doit(struct sk_buff *skb,
835 struct genl_info *info)
836{
837 struct devlink *devlink = info->user_ptr[0];
838 u32 port_index;
839
840 if (!info->attrs[DEVLINK_ATTR_PORT_INDEX])
841 return -EINVAL;
842
843 port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
ac0fc8a1 844 return devlink_port_unsplit(devlink, port_index, info->extack);
bfcd3a46
JP		 845}
846
bf797471
JP		 847static int devlink_nl_sb_fill(struct sk_buff *msg, struct devlink *devlink,
848 struct devlink_sb *devlink_sb,
849 enum devlink_command cmd, u32 portid,
850 u32 seq, int flags)
851{
852 void *hdr;
853
854 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
855 if (!hdr)
856 return -EMSGSIZE;
857
858 if (devlink_nl_put_handle(msg, devlink))
859 goto nla_put_failure;
860 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
861 goto nla_put_failure;
862 if (nla_put_u32(msg, DEVLINK_ATTR_SB_SIZE, devlink_sb->size))
863 goto nla_put_failure;
864 if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_POOL_COUNT,
865 devlink_sb->ingress_pools_count))
866 goto nla_put_failure;
867 if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_POOL_COUNT,
868 devlink_sb->egress_pools_count))
869 goto nla_put_failure;
870 if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_TC_COUNT,
871 devlink_sb->ingress_tc_count))
872 goto nla_put_failure;
873 if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_TC_COUNT,
874 devlink_sb->egress_tc_count))
875 goto nla_put_failure;
876
877 genlmsg_end(msg, hdr);
878 return 0;
879
880nla_put_failure:
881 genlmsg_cancel(msg, hdr);
882 return -EMSGSIZE;
883}
884
885static int devlink_nl_cmd_sb_get_doit(struct sk_buff *skb,
886 struct genl_info *info)
887{
888 struct devlink *devlink = info->user_ptr[0];
889 struct devlink_sb *devlink_sb = info->user_ptr[1];
890 struct sk_buff *msg;
891 int err;
892
893 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
894 if (!msg)
895 return -ENOMEM;
896
897 err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
898 DEVLINK_CMD_SB_NEW,
899 info->snd_portid, info->snd_seq, 0);
900 if (err) {
901 nlmsg_free(msg);
902 return err;
903 }
904
905 return genlmsg_reply(msg, info);
906}
907
908static int devlink_nl_cmd_sb_get_dumpit(struct sk_buff *msg,
909 struct netlink_callback *cb)
910{
911 struct devlink *devlink;
912 struct devlink_sb *devlink_sb;
913 int start = cb->args[0];
914 int idx = 0;
915 int err;
916
917 mutex_lock(&devlink_mutex);
918 list_for_each_entry(devlink, &devlink_list, list) {
919 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
920 continue;
2406e7e5 921 mutex_lock(&devlink->lock);
bf797471
JP		 922 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
923 if (idx < start) {
924 idx++;
925 continue;
926 }
927 err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
928 DEVLINK_CMD_SB_NEW,
929 NETLINK_CB(cb->skb).portid,
930 cb->nlh->nlmsg_seq,
931 NLM_F_MULTI);
2406e7e5
AS		 932 if (err) {
933 mutex_unlock(&devlink->lock);
bf797471 934 goto out;
2406e7e5 935 }
bf797471
JP		 936 idx++;
937 }
2406e7e5 938 mutex_unlock(&devlink->lock);
bf797471
JP		 939 }
940out:
941 mutex_unlock(&devlink_mutex);
942
943 cb->args[0] = idx;
944 return msg->len;
945}
946
947static int devlink_nl_sb_pool_fill(struct sk_buff *msg, struct devlink *devlink,
948 struct devlink_sb *devlink_sb,
949 u16 pool_index, enum devlink_command cmd,
950 u32 portid, u32 seq, int flags)
951{
952 struct devlink_sb_pool_info pool_info;
953 void *hdr;
954 int err;
955
956 err = devlink->ops->sb_pool_get(devlink, devlink_sb->index,
957 pool_index, &pool_info);
958 if (err)
959 return err;
960
961 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
962 if (!hdr)
963 return -EMSGSIZE;
964
965 if (devlink_nl_put_handle(msg, devlink))
966 goto nla_put_failure;
967 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
968 goto nla_put_failure;
969 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
970 goto nla_put_failure;
971 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_info.pool_type))
972 goto nla_put_failure;
973 if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_SIZE, pool_info.size))
974 goto nla_put_failure;
975 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE,
976 pool_info.threshold_type))
977 goto nla_put_failure;
bff5731d
JK		 978 if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_CELL_SIZE,
979 pool_info.cell_size))
980 goto nla_put_failure;
bf797471
JP		 981
982 genlmsg_end(msg, hdr);
983 return 0;
984
985nla_put_failure:
986 genlmsg_cancel(msg, hdr);
987 return -EMSGSIZE;
988}
989
990static int devlink_nl_cmd_sb_pool_get_doit(struct sk_buff *skb,
991 struct genl_info *info)
992{
993 struct devlink *devlink = info->user_ptr[0];
994 struct devlink_sb *devlink_sb = info->user_ptr[1];
995 struct sk_buff *msg;
996 u16 pool_index;
997 int err;
998
999 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1000 &pool_index);
1001 if (err)
1002 return err;
1003
be6fe1d8 1004 if (!devlink->ops->sb_pool_get)
bf797471
JP		 1005 return -EOPNOTSUPP;
1006
1007 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1008 if (!msg)
1009 return -ENOMEM;
1010
1011 err = devlink_nl_sb_pool_fill(msg, devlink, devlink_sb, pool_index,
1012 DEVLINK_CMD_SB_POOL_NEW,
1013 info->snd_portid, info->snd_seq, 0);
1014 if (err) {
1015 nlmsg_free(msg);
1016 return err;
1017 }
1018
1019 return genlmsg_reply(msg, info);
1020}
1021
1022static int __sb_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
1023 struct devlink *devlink,
1024 struct devlink_sb *devlink_sb,
1025 u32 portid, u32 seq)
1026{
1027 u16 pool_count = devlink_sb_pool_count(devlink_sb);
1028 u16 pool_index;
1029 int err;
1030
1031 for (pool_index = 0; pool_index < pool_count; pool_index++) {
1032 if (*p_idx < start) {
1033 (*p_idx)++;
1034 continue;
1035 }
1036 err = devlink_nl_sb_pool_fill(msg, devlink,
1037 devlink_sb,
1038 pool_index,
1039 DEVLINK_CMD_SB_POOL_NEW,
1040 portid, seq, NLM_F_MULTI);
1041 if (err)
1042 return err;
1043 (*p_idx)++;
1044 }
1045 return 0;
1046}
1047
1048static int devlink_nl_cmd_sb_pool_get_dumpit(struct sk_buff *msg,
1049 struct netlink_callback *cb)
1050{
1051 struct devlink *devlink;
1052 struct devlink_sb *devlink_sb;
1053 int start = cb->args[0];
1054 int idx = 0;
c62c2cfb 1055 int err = 0;
bf797471
JP		 1056
1057 mutex_lock(&devlink_mutex);
1058 list_for_each_entry(devlink, &devlink_list, list) {
1059 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
be6fe1d8 1060 !devlink->ops->sb_pool_get)
bf797471 1061 continue;
2406e7e5 1062 mutex_lock(&devlink->lock);
bf797471
JP		 1063 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
1064 err = __sb_pool_get_dumpit(msg, start, &idx, devlink,
1065 devlink_sb,
1066 NETLINK_CB(cb->skb).portid,
1067 cb->nlh->nlmsg_seq);
2406e7e5
AS		 1068 if (err && err != -EOPNOTSUPP) {
1069 mutex_unlock(&devlink->lock);
bf797471 1070 goto out;
2406e7e5 1071 }
bf797471 1072 }
2406e7e5 1073 mutex_unlock(&devlink->lock);
bf797471
JP		 1074 }
1075out:
1076 mutex_unlock(&devlink_mutex);
1077
c62c2cfb
JP		 1078 if (err != -EMSGSIZE)
1079 return err;
1080
bf797471
JP		 1081 cb->args[0] = idx;
1082 return msg->len;
1083}
1084
1085static int devlink_sb_pool_set(struct devlink *devlink, unsigned int sb_index,
1086 u16 pool_index, u32 size,
f2ad1a52
IS		 1087 enum devlink_sb_threshold_type threshold_type,
1088 struct netlink_ext_ack *extack)
bf797471
JP		 1089
1090{
1091 const struct devlink_ops *ops = devlink->ops;
1092
be6fe1d8 1093 if (ops->sb_pool_set)
bf797471 1094 return ops->sb_pool_set(devlink, sb_index, pool_index,
f2ad1a52 1095 size, threshold_type, extack);
bf797471
JP		 1096 return -EOPNOTSUPP;
1097}
1098
1099static int devlink_nl_cmd_sb_pool_set_doit(struct sk_buff *skb,
1100 struct genl_info *info)
1101{
1102 struct devlink *devlink = info->user_ptr[0];
1103 struct devlink_sb *devlink_sb = info->user_ptr[1];
1104 enum devlink_sb_threshold_type threshold_type;
1105 u16 pool_index;
1106 u32 size;
1107 int err;
1108
1109 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1110 &pool_index);
1111 if (err)
1112 return err;
1113
1114 err = devlink_sb_th_type_get_from_info(info, &threshold_type);
1115 if (err)
1116 return err;
1117
1118 if (!info->attrs[DEVLINK_ATTR_SB_POOL_SIZE])
1119 return -EINVAL;
1120
1121 size = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_POOL_SIZE]);
1122 return devlink_sb_pool_set(devlink, devlink_sb->index,
f2ad1a52
IS		 1123 pool_index, size, threshold_type,
1124 info->extack);
bf797471
JP		 1125}
1126
1127static int devlink_nl_sb_port_pool_fill(struct sk_buff *msg,
1128 struct devlink *devlink,
1129 struct devlink_port *devlink_port,
1130 struct devlink_sb *devlink_sb,
1131 u16 pool_index,
1132 enum devlink_command cmd,
1133 u32 portid, u32 seq, int flags)
1134{
df38dafd 1135 const struct devlink_ops *ops = devlink->ops;
bf797471
JP		 1136 u32 threshold;
1137 void *hdr;
1138 int err;
1139
df38dafd
JP		 1140 err = ops->sb_port_pool_get(devlink_port, devlink_sb->index,
1141 pool_index, &threshold);
bf797471
JP		 1142 if (err)
1143 return err;
1144
1145 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1146 if (!hdr)
1147 return -EMSGSIZE;
1148
1149 if (devlink_nl_put_handle(msg, devlink))
1150 goto nla_put_failure;
1151 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
1152 goto nla_put_failure;
1153 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
1154 goto nla_put_failure;
1155 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
1156 goto nla_put_failure;
1157 if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
1158 goto nla_put_failure;
1159
df38dafd
JP		 1160 if (ops->sb_occ_port_pool_get) {
1161 u32 cur;
1162 u32 max;
1163
1164 err = ops->sb_occ_port_pool_get(devlink_port, devlink_sb->index,
1165 pool_index, &cur, &max);
1166 if (err && err != -EOPNOTSUPP)
1167 return err;
1168 if (!err) {
1169 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
1170 goto nla_put_failure;
1171 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
1172 goto nla_put_failure;
1173 }
1174 }
1175
bf797471
JP		 1176 genlmsg_end(msg, hdr);
1177 return 0;
1178
1179nla_put_failure:
1180 genlmsg_cancel(msg, hdr);
1181 return -EMSGSIZE;
1182}
1183
1184static int devlink_nl_cmd_sb_port_pool_get_doit(struct sk_buff *skb,
1185 struct genl_info *info)
1186{
1187 struct devlink_port *devlink_port = info->user_ptr[0];
1188 struct devlink *devlink = devlink_port->devlink;
1189 struct devlink_sb *devlink_sb = info->user_ptr[1];
1190 struct sk_buff *msg;
1191 u16 pool_index;
1192 int err;
1193
1194 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1195 &pool_index);
1196 if (err)
1197 return err;
1198
be6fe1d8 1199 if (!devlink->ops->sb_port_pool_get)
bf797471
JP		 1200 return -EOPNOTSUPP;
1201
1202 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1203 if (!msg)
1204 return -ENOMEM;
1205
1206 err = devlink_nl_sb_port_pool_fill(msg, devlink, devlink_port,
1207 devlink_sb, pool_index,
1208 DEVLINK_CMD_SB_PORT_POOL_NEW,
1209 info->snd_portid, info->snd_seq, 0);
1210 if (err) {
1211 nlmsg_free(msg);
1212 return err;
1213 }
1214
1215 return genlmsg_reply(msg, info);
1216}
1217
1218static int __sb_port_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
1219 struct devlink *devlink,
1220 struct devlink_sb *devlink_sb,
1221 u32 portid, u32 seq)
1222{
1223 struct devlink_port *devlink_port;
1224 u16 pool_count = devlink_sb_pool_count(devlink_sb);
1225 u16 pool_index;
1226 int err;
1227
1228 list_for_each_entry(devlink_port, &devlink->port_list, list) {
1229 for (pool_index = 0; pool_index < pool_count; pool_index++) {
1230 if (*p_idx < start) {
1231 (*p_idx)++;
1232 continue;
1233 }
1234 err = devlink_nl_sb_port_pool_fill(msg, devlink,
1235 devlink_port,
1236 devlink_sb,
1237 pool_index,
1238 DEVLINK_CMD_SB_PORT_POOL_NEW,
1239 portid, seq,
1240 NLM_F_MULTI);
1241 if (err)
1242 return err;
1243 (*p_idx)++;
1244 }
1245 }
1246 return 0;
1247}
1248
1249static int devlink_nl_cmd_sb_port_pool_get_dumpit(struct sk_buff *msg,
1250 struct netlink_callback *cb)
1251{
1252 struct devlink *devlink;
1253 struct devlink_sb *devlink_sb;
1254 int start = cb->args[0];
1255 int idx = 0;
c62c2cfb 1256 int err = 0;
bf797471
JP		 1257
1258 mutex_lock(&devlink_mutex);
bf797471
JP		 1259 list_for_each_entry(devlink, &devlink_list, list) {
1260 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
be6fe1d8 1261 !devlink->ops->sb_port_pool_get)
bf797471 1262 continue;
2406e7e5 1263 mutex_lock(&devlink->lock);
bf797471
JP		 1264 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
1265 err = __sb_port_pool_get_dumpit(msg, start, &idx,
1266 devlink, devlink_sb,
1267 NETLINK_CB(cb->skb).portid,
1268 cb->nlh->nlmsg_seq);
2406e7e5
AS		 1269 if (err && err != -EOPNOTSUPP) {
1270 mutex_unlock(&devlink->lock);
bf797471 1271 goto out;
2406e7e5 1272 }
bf797471 1273 }
2406e7e5 1274 mutex_unlock(&devlink->lock);
bf797471
JP		 1275 }
1276out:
bf797471
JP		 1277 mutex_unlock(&devlink_mutex);
1278
c62c2cfb
JP		 1279 if (err != -EMSGSIZE)
1280 return err;
1281
bf797471
JP		 1282 cb->args[0] = idx;
1283 return msg->len;
1284}
1285
1286static int devlink_sb_port_pool_set(struct devlink_port *devlink_port,
1287 unsigned int sb_index, u16 pool_index,
f2ad1a52
IS		 1288 u32 threshold,
1289 struct netlink_ext_ack *extack)
bf797471
JP		 1290
1291{
1292 const struct devlink_ops *ops = devlink_port->devlink->ops;
1293
be6fe1d8 1294 if (ops->sb_port_pool_set)
bf797471 1295 return ops->sb_port_pool_set(devlink_port, sb_index,
f2ad1a52 1296 pool_index, threshold, extack);
bf797471
JP		 1297 return -EOPNOTSUPP;
1298}
1299
1300static int devlink_nl_cmd_sb_port_pool_set_doit(struct sk_buff *skb,
1301 struct genl_info *info)
1302{
1303 struct devlink_port *devlink_port = info->user_ptr[0];
1304 struct devlink_sb *devlink_sb = info->user_ptr[1];
1305 u16 pool_index;
1306 u32 threshold;
1307 int err;
1308
1309 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1310 &pool_index);
1311 if (err)
1312 return err;
1313
1314 if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD])
1315 return -EINVAL;
1316
1317 threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
1318 return devlink_sb_port_pool_set(devlink_port, devlink_sb->index,
f2ad1a52 1319 pool_index, threshold, info->extack);
bf797471
JP		 1320}
1321
1322static int
1323devlink_nl_sb_tc_pool_bind_fill(struct sk_buff *msg, struct devlink *devlink,
1324 struct devlink_port *devlink_port,
1325 struct devlink_sb *devlink_sb, u16 tc_index,
1326 enum devlink_sb_pool_type pool_type,
1327 enum devlink_command cmd,
1328 u32 portid, u32 seq, int flags)
1329{
df38dafd 1330 const struct devlink_ops *ops = devlink->ops;
bf797471
JP		 1331 u16 pool_index;
1332 u32 threshold;
1333 void *hdr;
1334 int err;
1335
df38dafd
JP		 1336 err = ops->sb_tc_pool_bind_get(devlink_port, devlink_sb->index,
1337 tc_index, pool_type,
1338 &pool_index, &threshold);
bf797471
JP		 1339 if (err)
1340 return err;
1341
1342 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1343 if (!hdr)
1344 return -EMSGSIZE;
1345
1346 if (devlink_nl_put_handle(msg, devlink))
1347 goto nla_put_failure;
1348 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
1349 goto nla_put_failure;
1350 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
1351 goto nla_put_failure;
1352 if (nla_put_u16(msg, DEVLINK_ATTR_SB_TC_INDEX, tc_index))
1353 goto nla_put_failure;
1354 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_type))
1355 goto nla_put_failure;
1356 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
1357 goto nla_put_failure;
1358 if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
1359 goto nla_put_failure;
1360
df38dafd
JP		 1361 if (ops->sb_occ_tc_port_bind_get) {
1362 u32 cur;
1363 u32 max;
1364
1365 err = ops->sb_occ_tc_port_bind_get(devlink_port,
1366 devlink_sb->index,
1367 tc_index, pool_type,
1368 &cur, &max);
1369 if (err && err != -EOPNOTSUPP)
1370 return err;
1371 if (!err) {
1372 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
1373 goto nla_put_failure;
1374 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
1375 goto nla_put_failure;
1376 }
1377 }
1378
bf797471
JP		 1379 genlmsg_end(msg, hdr);
1380 return 0;
1381
1382nla_put_failure:
1383 genlmsg_cancel(msg, hdr);
1384 return -EMSGSIZE;
1385}
1386
1387static int devlink_nl_cmd_sb_tc_pool_bind_get_doit(struct sk_buff *skb,
1388 struct genl_info *info)
1389{
1390 struct devlink_port *devlink_port = info->user_ptr[0];
1391 struct devlink *devlink = devlink_port->devlink;
1392 struct devlink_sb *devlink_sb = info->user_ptr[1];
1393 struct sk_buff *msg;
1394 enum devlink_sb_pool_type pool_type;
1395 u16 tc_index;
1396 int err;
1397
1398 err = devlink_sb_pool_type_get_from_info(info, &pool_type);
1399 if (err)
1400 return err;
1401
1402 err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
1403 pool_type, &tc_index);
1404 if (err)
1405 return err;
1406
be6fe1d8 1407 if (!devlink->ops->sb_tc_pool_bind_get)
bf797471
JP		 1408 return -EOPNOTSUPP;
1409
1410 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1411 if (!msg)
1412 return -ENOMEM;
1413
1414 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink, devlink_port,
1415 devlink_sb, tc_index, pool_type,
1416 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
1417 info->snd_portid,
1418 info->snd_seq, 0);
1419 if (err) {
1420 nlmsg_free(msg);
1421 return err;
1422 }
1423
1424 return genlmsg_reply(msg, info);
1425}
1426
1427static int __sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
1428 int start, int *p_idx,
1429 struct devlink *devlink,
1430 struct devlink_sb *devlink_sb,
1431 u32 portid, u32 seq)
1432{
1433 struct devlink_port *devlink_port;
1434 u16 tc_index;
1435 int err;
1436
1437 list_for_each_entry(devlink_port, &devlink->port_list, list) {
1438 for (tc_index = 0;
1439 tc_index < devlink_sb->ingress_tc_count; tc_index++) {
1440 if (*p_idx < start) {
1441 (*p_idx)++;
1442 continue;
1443 }
1444 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
1445 devlink_port,
1446 devlink_sb,
1447 tc_index,
1448 DEVLINK_SB_POOL_TYPE_INGRESS,
1449 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
1450 portid, seq,
1451 NLM_F_MULTI);
1452 if (err)
1453 return err;
1454 (*p_idx)++;
1455 }
1456 for (tc_index = 0;
1457 tc_index < devlink_sb->egress_tc_count; tc_index++) {
1458 if (*p_idx < start) {
1459 (*p_idx)++;
1460 continue;
1461 }
1462 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
1463 devlink_port,
1464 devlink_sb,
1465 tc_index,
1466 DEVLINK_SB_POOL_TYPE_EGRESS,
1467 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
1468 portid, seq,
1469 NLM_F_MULTI);
1470 if (err)
1471 return err;
1472 (*p_idx)++;
1473 }
1474 }
1475 return 0;
1476}
1477
1478static int
1479devlink_nl_cmd_sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
1480 struct netlink_callback *cb)
1481{
1482 struct devlink *devlink;
1483 struct devlink_sb *devlink_sb;
1484 int start = cb->args[0];
1485 int idx = 0;
c62c2cfb 1486 int err = 0;
bf797471
JP		 1487
1488 mutex_lock(&devlink_mutex);
bf797471
JP		 1489 list_for_each_entry(devlink, &devlink_list, list) {
1490 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
be6fe1d8 1491 !devlink->ops->sb_tc_pool_bind_get)
bf797471 1492 continue;
2406e7e5
AS		 1493
1494 mutex_lock(&devlink->lock);
bf797471
JP		 1495 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
1496 err = __sb_tc_pool_bind_get_dumpit(msg, start, &idx,
1497 devlink,
1498 devlink_sb,
1499 NETLINK_CB(cb->skb).portid,
1500 cb->nlh->nlmsg_seq);
2406e7e5
AS		 1501 if (err && err != -EOPNOTSUPP) {
1502 mutex_unlock(&devlink->lock);
bf797471 1503 goto out;
2406e7e5 1504 }
bf797471 1505 }
2406e7e5 1506 mutex_unlock(&devlink->lock);
bf797471
JP		 1507 }
1508out:
bf797471
JP		 1509 mutex_unlock(&devlink_mutex);
1510
c62c2cfb
JP		 1511 if (err != -EMSGSIZE)
1512 return err;
1513
bf797471
JP		 1514 cb->args[0] = idx;
1515 return msg->len;
1516}
1517
1518static int devlink_sb_tc_pool_bind_set(struct devlink_port *devlink_port,
1519 unsigned int sb_index, u16 tc_index,
1520 enum devlink_sb_pool_type pool_type,
f2ad1a52
IS		 1521 u16 pool_index, u32 threshold,
1522 struct netlink_ext_ack *extack)
bf797471
JP		 1523
1524{
1525 const struct devlink_ops *ops = devlink_port->devlink->ops;
1526
be6fe1d8 1527 if (ops->sb_tc_pool_bind_set)
bf797471
JP		 1528 return ops->sb_tc_pool_bind_set(devlink_port, sb_index,
1529 tc_index, pool_type,
f2ad1a52 1530 pool_index, threshold, extack);
bf797471
JP		 1531 return -EOPNOTSUPP;
1532}
1533
1534static int devlink_nl_cmd_sb_tc_pool_bind_set_doit(struct sk_buff *skb,
1535 struct genl_info *info)
1536{
1537 struct devlink_port *devlink_port = info->user_ptr[0];
1538 struct devlink_sb *devlink_sb = info->user_ptr[1];
1539 enum devlink_sb_pool_type pool_type;
1540 u16 tc_index;
1541 u16 pool_index;
1542 u32 threshold;
1543 int err;
1544
1545 err = devlink_sb_pool_type_get_from_info(info, &pool_type);
1546 if (err)
1547 return err;
1548
1549 err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
1550 pool_type, &tc_index);
1551 if (err)
1552 return err;
1553
1554 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1555 &pool_index);
1556 if (err)
1557 return err;
1558
1559 if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD])
1560 return -EINVAL;
1561
1562 threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
1563 return devlink_sb_tc_pool_bind_set(devlink_port, devlink_sb->index,
1564 tc_index, pool_type,
f2ad1a52 1565 pool_index, threshold, info->extack);
bf797471
JP		 1566}
1567
df38dafd
JP		 1568static int devlink_nl_cmd_sb_occ_snapshot_doit(struct sk_buff *skb,
1569 struct genl_info *info)
1570{
1571 struct devlink *devlink = info->user_ptr[0];
1572 struct devlink_sb *devlink_sb = info->user_ptr[1];
1573 const struct devlink_ops *ops = devlink->ops;
1574
be6fe1d8 1575 if (ops->sb_occ_snapshot)
df38dafd
JP		 1576 return ops->sb_occ_snapshot(devlink, devlink_sb->index);
1577 return -EOPNOTSUPP;
1578}
1579
1580static int devlink_nl_cmd_sb_occ_max_clear_doit(struct sk_buff *skb,
1581 struct genl_info *info)
1582{
1583 struct devlink *devlink = info->user_ptr[0];
1584 struct devlink_sb *devlink_sb = info->user_ptr[1];
1585 const struct devlink_ops *ops = devlink->ops;
1586
be6fe1d8 1587 if (ops->sb_occ_max_clear)
df38dafd
JP		 1588 return ops->sb_occ_max_clear(devlink, devlink_sb->index);
1589 return -EOPNOTSUPP;
1590}
1591
21e3d2dd
JP		 1592static int devlink_nl_eswitch_fill(struct sk_buff *msg, struct devlink *devlink,
1593 enum devlink_command cmd, u32 portid,
1594 u32 seq, int flags)
08f4b591 1595{
59bfde01 1596 const struct devlink_ops *ops = devlink->ops;
98fdbea5
LR		 1597 enum devlink_eswitch_encap_mode encap_mode;
1598 u8 inline_mode;
08f4b591 1599 void *hdr;
59bfde01
RD		 1600 int err = 0;
1601 u16 mode;
08f4b591
OG		 1602
1603 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1604 if (!hdr)
1605 return -EMSGSIZE;
1606
59bfde01
RD		 1607 err = devlink_nl_put_handle(msg, devlink);
1608 if (err)
1a6aa36b 1609 goto nla_put_failure;
08f4b591 1610
4456f61c
JP		 1611 if (ops->eswitch_mode_get) {
1612 err = ops->eswitch_mode_get(devlink, &mode);
1613 if (err)
1614 goto nla_put_failure;
1615 err = nla_put_u16(msg, DEVLINK_ATTR_ESWITCH_MODE, mode);
1616 if (err)
1617 goto nla_put_failure;
1618 }
59bfde01
RD		 1619
1620 if (ops->eswitch_inline_mode_get) {
1621 err = ops->eswitch_inline_mode_get(devlink, &inline_mode);
1622 if (err)
1a6aa36b 1623 goto nla_put_failure;
59bfde01
RD		 1624 err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_INLINE_MODE,
1625 inline_mode);
1626 if (err)
1a6aa36b 1627 goto nla_put_failure;
59bfde01 1628 }
08f4b591 1629
f43e9b06
RD		 1630 if (ops->eswitch_encap_mode_get) {
1631 err = ops->eswitch_encap_mode_get(devlink, &encap_mode);
1632 if (err)
1633 goto nla_put_failure;
1634 err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_ENCAP_MODE, encap_mode);
1635 if (err)
1636 goto nla_put_failure;
1637 }
1638
08f4b591
OG		 1639 genlmsg_end(msg, hdr);
1640 return 0;
1641
1a6aa36b 1642nla_put_failure:
08f4b591 1643 genlmsg_cancel(msg, hdr);
59bfde01 1644 return err;
08f4b591
OG		 1645}
1646
adf200f3
JP		 1647static int devlink_nl_cmd_eswitch_get_doit(struct sk_buff *skb,
1648 struct genl_info *info)
08f4b591
OG		 1649{
1650 struct devlink *devlink = info->user_ptr[0];
08f4b591 1651 struct sk_buff *msg;
08f4b591
OG		 1652 int err;
1653
08f4b591
OG		 1654 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1655 if (!msg)
1656 return -ENOMEM;
1657
21e3d2dd
JP		 1658 err = devlink_nl_eswitch_fill(msg, devlink, DEVLINK_CMD_ESWITCH_GET,
1659 info->snd_portid, info->snd_seq, 0);
08f4b591
OG		 1660
1661 if (err) {
1662 nlmsg_free(msg);
1663 return err;
1664 }
1665
1666 return genlmsg_reply(msg, info);
1667}
1668
adf200f3
JP		 1669static int devlink_nl_cmd_eswitch_set_doit(struct sk_buff *skb,
1670 struct genl_info *info)
08f4b591
OG		 1671{
1672 struct devlink *devlink = info->user_ptr[0];
1673 const struct devlink_ops *ops = devlink->ops;
98fdbea5
LR		 1674 enum devlink_eswitch_encap_mode encap_mode;
1675 u8 inline_mode;
59bfde01 1676 int err = 0;
f43e9b06 1677 u16 mode;
08f4b591 1678
59bfde01
RD		 1679 if (info->attrs[DEVLINK_ATTR_ESWITCH_MODE]) {
1680 if (!ops->eswitch_mode_set)
1681 return -EOPNOTSUPP;
1682 mode = nla_get_u16(info->attrs[DEVLINK_ATTR_ESWITCH_MODE]);
db7ff19e 1683 err = ops->eswitch_mode_set(devlink, mode, info->extack);
59bfde01
RD		 1684 if (err)
1685 return err;
1686 }
08f4b591 1687
59bfde01
RD		 1688 if (info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]) {
1689 if (!ops->eswitch_inline_mode_set)
1690 return -EOPNOTSUPP;
1691 inline_mode = nla_get_u8(
1692 info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]);
db7ff19e
EB		 1693 err = ops->eswitch_inline_mode_set(devlink, inline_mode,
1694 info->extack);
59bfde01
RD		 1695 if (err)
1696 return err;
1697 }
f43e9b06
RD		 1698
1699 if (info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]) {
1700 if (!ops->eswitch_encap_mode_set)
1701 return -EOPNOTSUPP;
1702 encap_mode = nla_get_u8(info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]);
db7ff19e
EB		 1703 err = ops->eswitch_encap_mode_set(devlink, encap_mode,
1704 info->extack);
f43e9b06
RD		 1705 if (err)
1706 return err;
1707 }
1708
1555d204
AS		 1709 return 0;
1710}
1711
1712int devlink_dpipe_match_put(struct sk_buff *skb,
1713 struct devlink_dpipe_match *match)
1714{
1715 struct devlink_dpipe_header *header = match->header;
1716 struct devlink_dpipe_field *field = &header->fields[match->field_id];
1717 struct nlattr *match_attr;
1718
ae0be8de 1719 match_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_MATCH);
1555d204
AS		 1720 if (!match_attr)
1721 return -EMSGSIZE;
1722
1723 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_MATCH_TYPE, match->type) ||
1724 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, match->header_index) ||
1725 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
1726 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
1727 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
1728 goto nla_put_failure;
1729
1730 nla_nest_end(skb, match_attr);
1731 return 0;
1732
1733nla_put_failure:
1734 nla_nest_cancel(skb, match_attr);
1735 return -EMSGSIZE;
1736}
1737EXPORT_SYMBOL_GPL(devlink_dpipe_match_put);
1738
1739static int devlink_dpipe_matches_put(struct devlink_dpipe_table *table,
1740 struct sk_buff *skb)
1741{
1742 struct nlattr *matches_attr;
1743
ae0be8de
MK		 1744 matches_attr = nla_nest_start_noflag(skb,
1745 DEVLINK_ATTR_DPIPE_TABLE_MATCHES);
1555d204
AS		 1746 if (!matches_attr)
1747 return -EMSGSIZE;
1748
1749 if (table->table_ops->matches_dump(table->priv, skb))
1750 goto nla_put_failure;
1751
1752 nla_nest_end(skb, matches_attr);
1753 return 0;
1754
1755nla_put_failure:
1756 nla_nest_cancel(skb, matches_attr);
1757 return -EMSGSIZE;
1758}
1759
1760int devlink_dpipe_action_put(struct sk_buff *skb,
1761 struct devlink_dpipe_action *action)
1762{
1763 struct devlink_dpipe_header *header = action->header;
1764 struct devlink_dpipe_field *field = &header->fields[action->field_id];
1765 struct nlattr *action_attr;
1766
ae0be8de 1767 action_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ACTION);
1555d204
AS		 1768 if (!action_attr)
1769 return -EMSGSIZE;
1770
1771 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_ACTION_TYPE, action->type) ||
1772 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, action->header_index) ||
1773 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
1774 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
1775 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
1776 goto nla_put_failure;
1777
1778 nla_nest_end(skb, action_attr);
1779 return 0;
1780
1781nla_put_failure:
1782 nla_nest_cancel(skb, action_attr);
1783 return -EMSGSIZE;
1784}
1785EXPORT_SYMBOL_GPL(devlink_dpipe_action_put);
1786
1787static int devlink_dpipe_actions_put(struct devlink_dpipe_table *table,
1788 struct sk_buff *skb)
1789{
1790 struct nlattr *actions_attr;
1791
ae0be8de
MK		 1792 actions_attr = nla_nest_start_noflag(skb,
1793 DEVLINK_ATTR_DPIPE_TABLE_ACTIONS);
1555d204
AS		 1794 if (!actions_attr)
1795 return -EMSGSIZE;
1796
1797 if (table->table_ops->actions_dump(table->priv, skb))
1798 goto nla_put_failure;
1799
1800 nla_nest_end(skb, actions_attr);
1801 return 0;
1802
1803nla_put_failure:
1804 nla_nest_cancel(skb, actions_attr);
1805 return -EMSGSIZE;
1806}
1807
1808static int devlink_dpipe_table_put(struct sk_buff *skb,
1809 struct devlink_dpipe_table *table)
1810{
1811 struct nlattr *table_attr;
ffd3cdcc 1812 u64 table_size;
1555d204 1813
ffd3cdcc 1814 table_size = table->table_ops->size_get(table->priv);
ae0be8de 1815 table_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLE);
1555d204
AS		 1816 if (!table_attr)
1817 return -EMSGSIZE;
1818
1819 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_TABLE_NAME, table->name) ||
ffd3cdcc 1820 nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_SIZE, table_size,
1555d204
AS		 1821 DEVLINK_ATTR_PAD))
1822 goto nla_put_failure;
1823 if (nla_put_u8(skb, DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED,
1824 table->counters_enabled))
1825 goto nla_put_failure;
1826
56dc7cd0 1827 if (table->resource_valid) {
3d18e4f1
AS		 1828 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_ID,
1829 table->resource_id, DEVLINK_ATTR_PAD) ||
1830 nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_UNITS,
1831 table->resource_units, DEVLINK_ATTR_PAD))
1832 goto nla_put_failure;
56dc7cd0 1833 }
1555d204
AS		 1834 if (devlink_dpipe_matches_put(table, skb))
1835 goto nla_put_failure;
1836
1837 if (devlink_dpipe_actions_put(table, skb))
1838 goto nla_put_failure;
1839
1840 nla_nest_end(skb, table_attr);
1841 return 0;
1842
1843nla_put_failure:
1844 nla_nest_cancel(skb, table_attr);
1845 return -EMSGSIZE;
1846}
1847
1848static int devlink_dpipe_send_and_alloc_skb(struct sk_buff **pskb,
1849 struct genl_info *info)
1850{
1851 int err;
1852
1853 if (*pskb) {
1854 err = genlmsg_reply(*pskb, info);
1855 if (err)
1856 return err;
1857 }
1858 *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
1859 if (!*pskb)
1860 return -ENOMEM;
1861 return 0;
1862}
1863
1864static int devlink_dpipe_tables_fill(struct genl_info *info,
1865 enum devlink_command cmd, int flags,
1866 struct list_head *dpipe_tables,
1867 const char *table_name)
1868{
1869 struct devlink *devlink = info->user_ptr[0];
1870 struct devlink_dpipe_table *table;
1871 struct nlattr *tables_attr;
1872 struct sk_buff *skb = NULL;
1873 struct nlmsghdr *nlh;
1874 bool incomplete;
1875 void *hdr;
1876 int i;
1877 int err;
1878
1879 table = list_first_entry(dpipe_tables,
1880 struct devlink_dpipe_table, list);
1881start_again:
1882 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
1883 if (err)
1884 return err;
1885
1886 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
1887 &devlink_nl_family, NLM_F_MULTI, cmd);
6044bd4a
HY		 1888 if (!hdr) {
1889 nlmsg_free(skb);
1555d204 1890 return -EMSGSIZE;
6044bd4a 1891 }
1555d204
AS		 1892
1893 if (devlink_nl_put_handle(skb, devlink))
1894 goto nla_put_failure;
ae0be8de 1895 tables_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLES);
1555d204
AS		 1896 if (!tables_attr)
1897 goto nla_put_failure;
1898
1899 i = 0;
1900 incomplete = false;
1901 list_for_each_entry_from(table, dpipe_tables, list) {
1902 if (!table_name) {
1903 err = devlink_dpipe_table_put(skb, table);
1904 if (err) {
1905 if (!i)
1906 goto err_table_put;
1907 incomplete = true;
1908 break;
1909 }
1910 } else {
1911 if (!strcmp(table->name, table_name)) {
1912 err = devlink_dpipe_table_put(skb, table);
1913 if (err)
1914 break;
1915 }
1916 }
1917 i++;
1918 }
1919
1920 nla_nest_end(skb, tables_attr);
1921 genlmsg_end(skb, hdr);
1922 if (incomplete)
1923 goto start_again;
1924
1925send_done:
1926 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
1927 NLMSG_DONE, 0, flags | NLM_F_MULTI);
1928 if (!nlh) {
1929 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
1930 if (err)
7fe4d6dc 1931 return err;
1555d204
AS		 1932 goto send_done;
1933 }
1934
1935 return genlmsg_reply(skb, info);
1936
1937nla_put_failure:
1938 err = -EMSGSIZE;
1939err_table_put:
1555d204
AS		 1940 nlmsg_free(skb);
1941 return err;
1942}
1943
1944static int devlink_nl_cmd_dpipe_table_get(struct sk_buff *skb,
1945 struct genl_info *info)
1946{
1947 struct devlink *devlink = info->user_ptr[0];
1948 const char *table_name = NULL;
1949
1950 if (info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
1951 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
1952
1953 return devlink_dpipe_tables_fill(info, DEVLINK_CMD_DPIPE_TABLE_GET, 0,
1954 &devlink->dpipe_table_list,
1955 table_name);
1956}
1957
1958static int devlink_dpipe_value_put(struct sk_buff *skb,
1959 struct devlink_dpipe_value *value)
1960{
1961 if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE,
1962 value->value_size, value->value))
1963 return -EMSGSIZE;
1964 if (value->mask)
1965 if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE_MASK,
1966 value->value_size, value->mask))
1967 return -EMSGSIZE;
1968 if (value->mapping_valid)
1969 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_VALUE_MAPPING,
1970 value->mapping_value))
1971 return -EMSGSIZE;
1972 return 0;
1973}
1974
1975static int devlink_dpipe_action_value_put(struct sk_buff *skb,
1976 struct devlink_dpipe_value *value)
1977{
1978 if (!value->action)
1979 return -EINVAL;
1980 if (devlink_dpipe_action_put(skb, value->action))
1981 return -EMSGSIZE;
1982 if (devlink_dpipe_value_put(skb, value))
1983 return -EMSGSIZE;
1984 return 0;
1985}
1986
1987static int devlink_dpipe_action_values_put(struct sk_buff *skb,
1988 struct devlink_dpipe_value *values,
1989 unsigned int values_count)
1990{
1991 struct nlattr *action_attr;
1992 int i;
1993 int err;
1994
1995 for (i = 0; i < values_count; i++) {
ae0be8de
MK		 1996 action_attr = nla_nest_start_noflag(skb,
1997 DEVLINK_ATTR_DPIPE_ACTION_VALUE);
1555d204
AS		 1998 if (!action_attr)
1999 return -EMSGSIZE;
2000 err = devlink_dpipe_action_value_put(skb, &values[i]);
2001 if (err)
2002 goto err_action_value_put;
2003 nla_nest_end(skb, action_attr);
2004 }
2005 return 0;
2006
2007err_action_value_put:
2008 nla_nest_cancel(skb, action_attr);
2009 return err;
2010}
2011
2012static int devlink_dpipe_match_value_put(struct sk_buff *skb,
2013 struct devlink_dpipe_value *value)
2014{
2015 if (!value->match)
2016 return -EINVAL;
2017 if (devlink_dpipe_match_put(skb, value->match))
2018 return -EMSGSIZE;
2019 if (devlink_dpipe_value_put(skb, value))
2020 return -EMSGSIZE;
2021 return 0;
2022}
2023
2024static int devlink_dpipe_match_values_put(struct sk_buff *skb,
2025 struct devlink_dpipe_value *values,
2026 unsigned int values_count)
2027{
2028 struct nlattr *match_attr;
2029 int i;
2030 int err;
2031
2032 for (i = 0; i < values_count; i++) {
ae0be8de
MK		 2033 match_attr = nla_nest_start_noflag(skb,
2034 DEVLINK_ATTR_DPIPE_MATCH_VALUE);
1555d204
AS		 2035 if (!match_attr)
2036 return -EMSGSIZE;
2037 err = devlink_dpipe_match_value_put(skb, &values[i]);
2038 if (err)
2039 goto err_match_value_put;
2040 nla_nest_end(skb, match_attr);
2041 }
2042 return 0;
2043
2044err_match_value_put:
2045 nla_nest_cancel(skb, match_attr);
2046 return err;
2047}
2048
2049static int devlink_dpipe_entry_put(struct sk_buff *skb,
2050 struct devlink_dpipe_entry *entry)
2051{
2052 struct nlattr *entry_attr, *matches_attr, *actions_attr;
2053 int err;
2054
ae0be8de 2055 entry_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ENTRY);
1555d204
AS		 2056 if (!entry_attr)
2057 return -EMSGSIZE;
2058
2059 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_INDEX, entry->index,
2060 DEVLINK_ATTR_PAD))
2061 goto nla_put_failure;
2062 if (entry->counter_valid)
2063 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_COUNTER,
2064 entry->counter, DEVLINK_ATTR_PAD))
2065 goto nla_put_failure;
2066
ae0be8de
MK		 2067 matches_attr = nla_nest_start_noflag(skb,
2068 DEVLINK_ATTR_DPIPE_ENTRY_MATCH_VALUES);
1555d204
AS		 2069 if (!matches_attr)
2070 goto nla_put_failure;
2071
2072 err = devlink_dpipe_match_values_put(skb, entry->match_values,
2073 entry->match_values_count);
2074 if (err) {
2075 nla_nest_cancel(skb, matches_attr);
2076 goto err_match_values_put;
2077 }
2078 nla_nest_end(skb, matches_attr);
2079
ae0be8de
MK		 2080 actions_attr = nla_nest_start_noflag(skb,
2081 DEVLINK_ATTR_DPIPE_ENTRY_ACTION_VALUES);
1555d204
AS		 2082 if (!actions_attr)
2083 goto nla_put_failure;
2084
2085 err = devlink_dpipe_action_values_put(skb, entry->action_values,
2086 entry->action_values_count);
2087 if (err) {
2088 nla_nest_cancel(skb, actions_attr);
2089 goto err_action_values_put;
2090 }
2091 nla_nest_end(skb, actions_attr);
59bfde01 2092
1555d204 2093 nla_nest_end(skb, entry_attr);
59bfde01 2094 return 0;
1555d204
AS		 2095
2096nla_put_failure:
2097 err = -EMSGSIZE;
2098err_match_values_put:
2099err_action_values_put:
2100 nla_nest_cancel(skb, entry_attr);
2101 return err;
2102}
2103
2104static struct devlink_dpipe_table *
2105devlink_dpipe_table_find(struct list_head *dpipe_tables,
2eb51c75 2106 const char *table_name, struct devlink *devlink)
1555d204
AS		 2107{
2108 struct devlink_dpipe_table *table;
2eb51c75
MB		 2109 list_for_each_entry_rcu(table, dpipe_tables, list,
2110 lockdep_is_held(&devlink->lock)) {
1555d204
AS		 2111 if (!strcmp(table->name, table_name))
2112 return table;
2113 }
2114 return NULL;
2115}
2116
2117int devlink_dpipe_entry_ctx_prepare(struct devlink_dpipe_dump_ctx *dump_ctx)
2118{
2119 struct devlink *devlink;
2120 int err;
2121
2122 err = devlink_dpipe_send_and_alloc_skb(&dump_ctx->skb,
2123 dump_ctx->info);
2124 if (err)
2125 return err;
2126
2127 dump_ctx->hdr = genlmsg_put(dump_ctx->skb,
2128 dump_ctx->info->snd_portid,
2129 dump_ctx->info->snd_seq,
2130 &devlink_nl_family, NLM_F_MULTI,
2131 dump_ctx->cmd);
2132 if (!dump_ctx->hdr)
2133 goto nla_put_failure;
2134
2135 devlink = dump_ctx->info->user_ptr[0];
2136 if (devlink_nl_put_handle(dump_ctx->skb, devlink))
2137 goto nla_put_failure;
ae0be8de
MK		 2138 dump_ctx->nest = nla_nest_start_noflag(dump_ctx->skb,
2139 DEVLINK_ATTR_DPIPE_ENTRIES);
1555d204
AS		 2140 if (!dump_ctx->nest)
2141 goto nla_put_failure;
2142 return 0;
2143
2144nla_put_failure:
1555d204
AS		 2145 nlmsg_free(dump_ctx->skb);
2146 return -EMSGSIZE;
2147}
2148EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_prepare);
2149
2150int devlink_dpipe_entry_ctx_append(struct devlink_dpipe_dump_ctx *dump_ctx,
2151 struct devlink_dpipe_entry *entry)
2152{
2153 return devlink_dpipe_entry_put(dump_ctx->skb, entry);
2154}
2155EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_append);
2156
2157int devlink_dpipe_entry_ctx_close(struct devlink_dpipe_dump_ctx *dump_ctx)
2158{
2159 nla_nest_end(dump_ctx->skb, dump_ctx->nest);
2160 genlmsg_end(dump_ctx->skb, dump_ctx->hdr);
2161 return 0;
2162}
2163EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_close);
2164
35807324
AS		 2165void devlink_dpipe_entry_clear(struct devlink_dpipe_entry *entry)
2166
2167{
2168 unsigned int value_count, value_index;
2169 struct devlink_dpipe_value *value;
2170
2171 value = entry->action_values;
2172 value_count = entry->action_values_count;
2173 for (value_index = 0; value_index < value_count; value_index++) {
2174 kfree(value[value_index].value);
2175 kfree(value[value_index].mask);
2176 }
2177
2178 value = entry->match_values;
2179 value_count = entry->match_values_count;
2180 for (value_index = 0; value_index < value_count; value_index++) {
2181 kfree(value[value_index].value);
2182 kfree(value[value_index].mask);
2183 }
2184}
2185EXPORT_SYMBOL(devlink_dpipe_entry_clear);
2186
1555d204
AS		 2187static int devlink_dpipe_entries_fill(struct genl_info *info,
2188 enum devlink_command cmd, int flags,
2189 struct devlink_dpipe_table *table)
2190{
2191 struct devlink_dpipe_dump_ctx dump_ctx;
2192 struct nlmsghdr *nlh;
2193 int err;
2194
2195 dump_ctx.skb = NULL;
2196 dump_ctx.cmd = cmd;
2197 dump_ctx.info = info;
2198
2199 err = table->table_ops->entries_dump(table->priv,
2200 table->counters_enabled,
2201 &dump_ctx);
2202 if (err)
7fe4d6dc 2203 return err;
1555d204
AS		 2204
2205send_done:
2206 nlh = nlmsg_put(dump_ctx.skb, info->snd_portid, info->snd_seq,
2207 NLMSG_DONE, 0, flags | NLM_F_MULTI);
2208 if (!nlh) {
2209 err = devlink_dpipe_send_and_alloc_skb(&dump_ctx.skb, info);
2210 if (err)
7fe4d6dc 2211 return err;
1555d204
AS		 2212 goto send_done;
2213 }
2214 return genlmsg_reply(dump_ctx.skb, info);
1555d204
AS		 2215}
2216
2217static int devlink_nl_cmd_dpipe_entries_get(struct sk_buff *skb,
2218 struct genl_info *info)
2219{
2220 struct devlink *devlink = info->user_ptr[0];
2221 struct devlink_dpipe_table *table;
2222 const char *table_name;
2223
2224 if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
2225 return -EINVAL;
2226
2227 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
2228 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2eb51c75 2229 table_name, devlink);
1555d204
AS		 2230 if (!table)
2231 return -EINVAL;
2232
2233 if (!table->table_ops->entries_dump)
2234 return -EINVAL;
2235
2236 return devlink_dpipe_entries_fill(info, DEVLINK_CMD_DPIPE_ENTRIES_GET,
2237 0, table);
2238}
2239
2240static int devlink_dpipe_fields_put(struct sk_buff *skb,
2241 const struct devlink_dpipe_header *header)
2242{
2243 struct devlink_dpipe_field *field;
2244 struct nlattr *field_attr;
2245 int i;
2246
2247 for (i = 0; i < header->fields_count; i++) {
2248 field = &header->fields[i];
ae0be8de
MK		 2249 field_attr = nla_nest_start_noflag(skb,
2250 DEVLINK_ATTR_DPIPE_FIELD);
1555d204
AS		 2251 if (!field_attr)
2252 return -EMSGSIZE;
2253 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_FIELD_NAME, field->name) ||
2254 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
2255 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_BITWIDTH, field->bitwidth) ||
2256 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_MAPPING_TYPE, field->mapping_type))
2257 goto nla_put_failure;
2258 nla_nest_end(skb, field_attr);
2259 }
2260 return 0;
2261
2262nla_put_failure:
2263 nla_nest_cancel(skb, field_attr);
2264 return -EMSGSIZE;
2265}
2266
2267static int devlink_dpipe_header_put(struct sk_buff *skb,
2268 struct devlink_dpipe_header *header)
2269{
2270 struct nlattr *fields_attr, *header_attr;
2271 int err;
2272
ae0be8de 2273 header_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADER);
cb6bf9cf 2274 if (!header_attr)
1555d204
AS		 2275 return -EMSGSIZE;
2276
2277 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_HEADER_NAME, header->name) ||
2278 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
2279 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
2280 goto nla_put_failure;
2281
ae0be8de
MK		 2282 fields_attr = nla_nest_start_noflag(skb,
2283 DEVLINK_ATTR_DPIPE_HEADER_FIELDS);
1555d204
AS		 2284 if (!fields_attr)
2285 goto nla_put_failure;
2286
2287 err = devlink_dpipe_fields_put(skb, header);
2288 if (err) {
2289 nla_nest_cancel(skb, fields_attr);
2290 goto nla_put_failure;
2291 }
2292 nla_nest_end(skb, fields_attr);
2293 nla_nest_end(skb, header_attr);
2294 return 0;
2295
2296nla_put_failure:
2297 err = -EMSGSIZE;
2298 nla_nest_cancel(skb, header_attr);
2299 return err;
2300}
2301
2302static int devlink_dpipe_headers_fill(struct genl_info *info,
2303 enum devlink_command cmd, int flags,
2304 struct devlink_dpipe_headers *
2305 dpipe_headers)
2306{
2307 struct devlink *devlink = info->user_ptr[0];
2308 struct nlattr *headers_attr;
2309 struct sk_buff *skb = NULL;
2310 struct nlmsghdr *nlh;
2311 void *hdr;
2312 int i, j;
2313 int err;
2314
2315 i = 0;
2316start_again:
2317 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2318 if (err)
2319 return err;
2320
2321 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
2322 &devlink_nl_family, NLM_F_MULTI, cmd);
6044bd4a
HY		 2323 if (!hdr) {
2324 nlmsg_free(skb);
1555d204 2325 return -EMSGSIZE;
6044bd4a 2326 }
1555d204
AS		 2327
2328 if (devlink_nl_put_handle(skb, devlink))
2329 goto nla_put_failure;
ae0be8de 2330 headers_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADERS);
1555d204
AS		 2331 if (!headers_attr)
2332 goto nla_put_failure;
2333
2334 j = 0;
2335 for (; i < dpipe_headers->headers_count; i++) {
2336 err = devlink_dpipe_header_put(skb, dpipe_headers->headers[i]);
2337 if (err) {
2338 if (!j)
2339 goto err_table_put;
2340 break;
2341 }
2342 j++;
2343 }
2344 nla_nest_end(skb, headers_attr);
2345 genlmsg_end(skb, hdr);
2346 if (i != dpipe_headers->headers_count)
2347 goto start_again;
2348
2349send_done:
2350 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
2351 NLMSG_DONE, 0, flags | NLM_F_MULTI);
2352 if (!nlh) {
2353 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2354 if (err)
7fe4d6dc 2355 return err;
1555d204
AS		 2356 goto send_done;
2357 }
2358 return genlmsg_reply(skb, info);
2359
2360nla_put_failure:
2361 err = -EMSGSIZE;
2362err_table_put:
1555d204
AS		 2363 nlmsg_free(skb);
2364 return err;
2365}
2366
2367static int devlink_nl_cmd_dpipe_headers_get(struct sk_buff *skb,
2368 struct genl_info *info)
2369{
2370 struct devlink *devlink = info->user_ptr[0];
2371
2372 if (!devlink->dpipe_headers)
2373 return -EOPNOTSUPP;
2374 return devlink_dpipe_headers_fill(info, DEVLINK_CMD_DPIPE_HEADERS_GET,
2375 0, devlink->dpipe_headers);
2376}
2377
2378static int devlink_dpipe_table_counters_set(struct devlink *devlink,
2379 const char *table_name,
2380 bool enable)
2381{
2382 struct devlink_dpipe_table *table;
2383
2384 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2eb51c75 2385 table_name, devlink);
1555d204
AS		 2386 if (!table)
2387 return -EINVAL;
2388
2389 if (table->counter_control_extern)
2390 return -EOPNOTSUPP;
2391
2392 if (!(table->counters_enabled ^ enable))
2393 return 0;
2394
2395 table->counters_enabled = enable;
2396 if (table->table_ops->counters_set_update)
2397 table->table_ops->counters_set_update(table->priv, enable);
2398 return 0;
2399}
2400
2401static int devlink_nl_cmd_dpipe_table_counters_set(struct sk_buff *skb,
2402 struct genl_info *info)
2403{
2404 struct devlink *devlink = info->user_ptr[0];
2405 const char *table_name;
2406 bool counters_enable;
2407
2408 if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME] ||
2409 !info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED])
2410 return -EINVAL;
2411
2412 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
2413 counters_enable = !!nla_get_u8(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED]);
2414
2415 return devlink_dpipe_table_counters_set(devlink, table_name,
2416 counters_enable);
08f4b591
OG		 2417}
2418
43dd7512 2419static struct devlink_resource *
d9f9b9a4
AS		 2420devlink_resource_find(struct devlink *devlink,
2421 struct devlink_resource *resource, u64 resource_id)
2422{
2423 struct list_head *resource_list;
2424
2425 if (resource)
2426 resource_list = &resource->resource_list;
2427 else
2428 resource_list = &devlink->resource_list;
2429
2430 list_for_each_entry(resource, resource_list, list) {
2431 struct devlink_resource *child_resource;
2432
2433 if (resource->id == resource_id)
2434 return resource;
2435
2436 child_resource = devlink_resource_find(devlink, resource,
2437 resource_id);
2438 if (child_resource)
2439 return child_resource;
2440 }
2441 return NULL;
2442}
2443
43dd7512
WY		 2444static void
2445devlink_resource_validate_children(struct devlink_resource *resource)
d9f9b9a4
AS		 2446{
2447 struct devlink_resource *child_resource;
2448 bool size_valid = true;
2449 u64 parts_size = 0;
2450
2451 if (list_empty(&resource->resource_list))
2452 goto out;
2453
2454 list_for_each_entry(child_resource, &resource->resource_list, list)
2455 parts_size += child_resource->size_new;
2456
b9d17175 2457 if (parts_size > resource->size_new)
d9f9b9a4
AS		 2458 size_valid = false;
2459out:
2460 resource->size_valid = size_valid;
2461}
2462
cc944ead
AS		 2463static int
2464devlink_resource_validate_size(struct devlink_resource *resource, u64 size,
2465 struct netlink_ext_ack *extack)
2466{
2467 u64 reminder;
2468 int err = 0;
2469
0f3e9c97 2470 if (size > resource->size_params.size_max) {
cc944ead
AS		 2471 NL_SET_ERR_MSG_MOD(extack, "Size larger than maximum");
2472 err = -EINVAL;
2473 }
2474
0f3e9c97 2475 if (size < resource->size_params.size_min) {
cc944ead
AS		 2476 NL_SET_ERR_MSG_MOD(extack, "Size smaller than minimum");
2477 err = -EINVAL;
2478 }
2479
0f3e9c97 2480 div64_u64_rem(size, resource->size_params.size_granularity, &reminder);
cc944ead
AS		 2481 if (reminder) {
2482 NL_SET_ERR_MSG_MOD(extack, "Wrong granularity");
2483 err = -EINVAL;
2484 }
2485
2486 return err;
2487}
2488
d9f9b9a4
AS		 2489static int devlink_nl_cmd_resource_set(struct sk_buff *skb,
2490 struct genl_info *info)
2491{
2492 struct devlink *devlink = info->user_ptr[0];
2493 struct devlink_resource *resource;
2494 u64 resource_id;
2495 u64 size;
2496 int err;
2497
2498 if (!info->attrs[DEVLINK_ATTR_RESOURCE_ID] ||
2499 !info->attrs[DEVLINK_ATTR_RESOURCE_SIZE])
2500 return -EINVAL;
2501 resource_id = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_ID]);
2502
2503 resource = devlink_resource_find(devlink, NULL, resource_id);
2504 if (!resource)
2505 return -EINVAL;
2506
d9f9b9a4 2507 size = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_SIZE]);
cc944ead 2508 err = devlink_resource_validate_size(resource, size, info->extack);
d9f9b9a4
AS		 2509 if (err)
2510 return err;
2511
2512 resource->size_new = size;
2513 devlink_resource_validate_children(resource);
2514 if (resource->parent)
2515 devlink_resource_validate_children(resource->parent);
2516 return 0;
2517}
2518
3d18e4f1 2519static int
d9f9b9a4
AS		 2520devlink_resource_size_params_put(struct devlink_resource *resource,
2521 struct sk_buff *skb)
2522{
2523 struct devlink_resource_size_params *size_params;
2524
77d27096 2525 size_params = &resource->size_params;
3d18e4f1
AS		 2526 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_GRAN,
2527 size_params->size_granularity, DEVLINK_ATTR_PAD) ||
2528 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MAX,
2529 size_params->size_max, DEVLINK_ATTR_PAD) ||
2530 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MIN,
2531 size_params->size_min, DEVLINK_ATTR_PAD) ||
2532 nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_UNIT, size_params->unit))
2533 return -EMSGSIZE;
2534 return 0;
d9f9b9a4
AS		 2535}
2536
fc56be47
JP		 2537static int devlink_resource_occ_put(struct devlink_resource *resource,
2538 struct sk_buff *skb)
2539{
2540 if (!resource->occ_get)
2541 return 0;
2542 return nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_OCC,
2543 resource->occ_get(resource->occ_get_priv),
2544 DEVLINK_ATTR_PAD);
2545}
2546
d9f9b9a4
AS		 2547static int devlink_resource_put(struct devlink *devlink, struct sk_buff *skb,
2548 struct devlink_resource *resource)
2549{
2550 struct devlink_resource *child_resource;
2551 struct nlattr *child_resource_attr;
2552 struct nlattr *resource_attr;
2553
ae0be8de 2554 resource_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_RESOURCE);
d9f9b9a4
AS		 2555 if (!resource_attr)
2556 return -EMSGSIZE;
2557
2558 if (nla_put_string(skb, DEVLINK_ATTR_RESOURCE_NAME, resource->name) ||
2559 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE, resource->size,
2560 DEVLINK_ATTR_PAD) ||
2561 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_ID, resource->id,
2562 DEVLINK_ATTR_PAD))
2563 goto nla_put_failure;
2564 if (resource->size != resource->size_new)
2565 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_NEW,
2566 resource->size_new, DEVLINK_ATTR_PAD);
fc56be47
JP		 2567 if (devlink_resource_occ_put(resource, skb))
2568 goto nla_put_failure;
3d18e4f1
AS		 2569 if (devlink_resource_size_params_put(resource, skb))
2570 goto nla_put_failure;
d9f9b9a4
AS		 2571 if (list_empty(&resource->resource_list))
2572 goto out;
2573
2574 if (nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_SIZE_VALID,
2575 resource->size_valid))
2576 goto nla_put_failure;
2577
ae0be8de
MK		 2578 child_resource_attr = nla_nest_start_noflag(skb,
2579 DEVLINK_ATTR_RESOURCE_LIST);
d9f9b9a4
AS		 2580 if (!child_resource_attr)
2581 goto nla_put_failure;
2582
2583 list_for_each_entry(child_resource, &resource->resource_list, list) {
2584 if (devlink_resource_put(devlink, skb, child_resource))
2585 goto resource_put_failure;
2586 }
2587
2588 nla_nest_end(skb, child_resource_attr);
2589out:
2590 nla_nest_end(skb, resource_attr);
2591 return 0;
2592
2593resource_put_failure:
2594 nla_nest_cancel(skb, child_resource_attr);
2595nla_put_failure:
2596 nla_nest_cancel(skb, resource_attr);
2597 return -EMSGSIZE;
2598}
2599
2600static int devlink_resource_fill(struct genl_info *info,
2601 enum devlink_command cmd, int flags)
2602{
2603 struct devlink *devlink = info->user_ptr[0];
2604 struct devlink_resource *resource;
2605 struct nlattr *resources_attr;
2606 struct sk_buff *skb = NULL;
2607 struct nlmsghdr *nlh;
2608 bool incomplete;
2609 void *hdr;
2610 int i;
2611 int err;
2612
2613 resource = list_first_entry(&devlink->resource_list,
2614 struct devlink_resource, list);
2615start_again:
2616 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2617 if (err)
2618 return err;
2619
2620 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
2621 &devlink_nl_family, NLM_F_MULTI, cmd);
2622 if (!hdr) {
2623 nlmsg_free(skb);
2624 return -EMSGSIZE;
2625 }
2626
2627 if (devlink_nl_put_handle(skb, devlink))
2628 goto nla_put_failure;
2629
ae0be8de
MK		 2630 resources_attr = nla_nest_start_noflag(skb,
2631 DEVLINK_ATTR_RESOURCE_LIST);
d9f9b9a4
AS		 2632 if (!resources_attr)
2633 goto nla_put_failure;
2634
2635 incomplete = false;
2636 i = 0;
2637 list_for_each_entry_from(resource, &devlink->resource_list, list) {
2638 err = devlink_resource_put(devlink, skb, resource);
2639 if (err) {
2640 if (!i)
2641 goto err_resource_put;
2642 incomplete = true;
2643 break;
2644 }
2645 i++;
2646 }
2647 nla_nest_end(skb, resources_attr);
2648 genlmsg_end(skb, hdr);
2649 if (incomplete)
2650 goto start_again;
2651send_done:
2652 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
2653 NLMSG_DONE, 0, flags | NLM_F_MULTI);
2654 if (!nlh) {
2655 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2656 if (err)
83fe9a96 2657 return err;
d9f9b9a4
AS		 2658 goto send_done;
2659 }
2660 return genlmsg_reply(skb, info);
2661
2662nla_put_failure:
2663 err = -EMSGSIZE;
2664err_resource_put:
d9f9b9a4
AS		 2665 nlmsg_free(skb);
2666 return err;
2667}
2668
2669static int devlink_nl_cmd_resource_dump(struct sk_buff *skb,
2670 struct genl_info *info)
2671{
2672 struct devlink *devlink = info->user_ptr[0];
2673
2674 if (list_empty(&devlink->resource_list))
2675 return -EOPNOTSUPP;
2676
2677 return devlink_resource_fill(info, DEVLINK_CMD_RESOURCE_DUMP, 0);
2678}
2679
2d8dc5bb
AS		 2680static int
2681devlink_resources_validate(struct devlink *devlink,
2682 struct devlink_resource *resource,
2683 struct genl_info *info)
2684{
2685 struct list_head *resource_list;
2686 int err = 0;
2687
2688 if (resource)
2689 resource_list = &resource->resource_list;
2690 else
2691 resource_list = &devlink->resource_list;
2692
2693 list_for_each_entry(resource, resource_list, list) {
2694 if (!resource->size_valid)
2695 return -EINVAL;
2696 err = devlink_resources_validate(devlink, resource, info);
2697 if (err)
2698 return err;
2699 }
2700 return err;
2701}
2702
070c63f2
JP		 2703static struct net *devlink_netns_get(struct sk_buff *skb,
2704 struct genl_info *info)
2705{
2706 struct nlattr *netns_pid_attr = info->attrs[DEVLINK_ATTR_NETNS_PID];
2707 struct nlattr *netns_fd_attr = info->attrs[DEVLINK_ATTR_NETNS_FD];
2708 struct nlattr *netns_id_attr = info->attrs[DEVLINK_ATTR_NETNS_ID];
2709 struct net *net;
2710
2711 if (!!netns_pid_attr + !!netns_fd_attr + !!netns_id_attr > 1) {
054eae82 2712 NL_SET_ERR_MSG_MOD(info->extack, "multiple netns identifying attributes specified");
070c63f2
JP		 2713 return ERR_PTR(-EINVAL);
2714 }
2715
2716 if (netns_pid_attr) {
2717 net = get_net_ns_by_pid(nla_get_u32(netns_pid_attr));
2718 } else if (netns_fd_attr) {
2719 net = get_net_ns_by_fd(nla_get_u32(netns_fd_attr));
2720 } else if (netns_id_attr) {
2721 net = get_net_ns_by_id(sock_net(skb->sk),
2722 nla_get_u32(netns_id_attr));
2723 if (!net)
2724 net = ERR_PTR(-EINVAL);
2725 } else {
2726 WARN_ON(1);
2727 net = ERR_PTR(-EINVAL);
2728 }
2729 if (IS_ERR(net)) {
054eae82 2730 NL_SET_ERR_MSG_MOD(info->extack, "Unknown network namespace");
070c63f2
JP		 2731 return ERR_PTR(-EINVAL);
2732 }
2733 if (!netlink_ns_capable(skb, net->user_ns, CAP_NET_ADMIN)) {
2734 put_net(net);
2735 return ERR_PTR(-EPERM);
2736 }
2737 return net;
2738}
2739
2740static void devlink_param_notify(struct devlink *devlink,
2741 unsigned int port_index,
2742 struct devlink_param_item *param_item,
2743 enum devlink_command cmd);
2744
2745static void devlink_reload_netns_change(struct devlink *devlink,
2746 struct net *dest_net)
2747{
2748 struct devlink_param_item *param_item;
2749
2750 /* Userspace needs to be notified about devlink objects
2751 * removed from original and entering new network namespace.
2752 * The rest of the devlink objects are re-created during
2753 * reload process so the notifications are generated separatelly.
2754 */
2755
2756 list_for_each_entry(param_item, &devlink->param_list, list)
2757 devlink_param_notify(devlink, 0, param_item,
2758 DEVLINK_CMD_PARAM_DEL);
2759 devlink_notify(devlink, DEVLINK_CMD_DEL);
2760
8273fd84 2761 __devlink_net_set(devlink, dest_net);
070c63f2
JP		 2762
2763 devlink_notify(devlink, DEVLINK_CMD_NEW);
2764 list_for_each_entry(param_item, &devlink->param_list, list)
2765 devlink_param_notify(devlink, 0, param_item,
2766 DEVLINK_CMD_PARAM_NEW);
2767}
2768
97691069
JP		 2769static bool devlink_reload_supported(struct devlink *devlink)
2770{
2771 return devlink->ops->reload_down && devlink->ops->reload_up;
2772}
2773
2670ac26
JP		 2774static void devlink_reload_failed_set(struct devlink *devlink,
2775 bool reload_failed)
2776{
2777 if (devlink->reload_failed == reload_failed)
2778 return;
2779 devlink->reload_failed = reload_failed;
2780 devlink_notify(devlink, DEVLINK_CMD_NEW);
2781}
2782
2783bool devlink_is_reload_failed(const struct devlink *devlink)
2784{
2785 return devlink->reload_failed;
2786}
2787EXPORT_SYMBOL_GPL(devlink_is_reload_failed);
2788
070c63f2
JP		 2789static int devlink_reload(struct devlink *devlink, struct net *dest_net,
2790 struct netlink_ext_ack *extack)
2791{
2792 int err;
2793
a0c76345
JP		 2794 if (!devlink->reload_enabled)
2795 return -EOPNOTSUPP;
2796
070c63f2
JP		 2797 err = devlink->ops->reload_down(devlink, !!dest_net, extack);
2798 if (err)
2799 return err;
2800
2801 if (dest_net && !net_eq(dest_net, devlink_net(devlink)))
2802 devlink_reload_netns_change(devlink, dest_net);
2803
2804 err = devlink->ops->reload_up(devlink, extack);
2805 devlink_reload_failed_set(devlink, !!err);
2806 return err;
2807}
2808
2d8dc5bb
AS		 2809static int devlink_nl_cmd_reload(struct sk_buff *skb, struct genl_info *info)
2810{
2811 struct devlink *devlink = info->user_ptr[0];
070c63f2 2812 struct net *dest_net = NULL;
2d8dc5bb
AS		 2813 int err;
2814
5a508a25 2815 if (!devlink_reload_supported(devlink) || !devlink->reload_enabled)
2d8dc5bb
AS		 2816 return -EOPNOTSUPP;
2817
2818 err = devlink_resources_validate(devlink, NULL, info);
2819 if (err) {
2820 NL_SET_ERR_MSG_MOD(info->extack, "resources size validation failed");
2821 return err;
2822 }
070c63f2
JP		 2823
2824 if (info->attrs[DEVLINK_ATTR_NETNS_PID] ||
2825 info->attrs[DEVLINK_ATTR_NETNS_FD] ||
2826 info->attrs[DEVLINK_ATTR_NETNS_ID]) {
2827 dest_net = devlink_netns_get(skb, info);
2828 if (IS_ERR(dest_net))
2829 return PTR_ERR(dest_net);
2830 }
2831
2832 err = devlink_reload(devlink, dest_net, info->extack);
2833
2834 if (dest_net)
2835 put_net(dest_net);
2836
2670ac26 2837 return err;
2d8dc5bb
AS		 2838}
2839
191ed202
JP		 2840static int devlink_nl_flash_update_fill(struct sk_buff *msg,
2841 struct devlink *devlink,
2842 enum devlink_command cmd,
2843 const char *status_msg,
2844 const char *component,
2845 unsigned long done, unsigned long total)
2846{
2847 void *hdr;
2848
2849 hdr = genlmsg_put(msg, 0, 0, &devlink_nl_family, 0, cmd);
2850 if (!hdr)
2851 return -EMSGSIZE;
2852
2853 if (devlink_nl_put_handle(msg, devlink))
2854 goto nla_put_failure;
2855
2856 if (cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS)
2857 goto out;
2858
2859 if (status_msg &&
2860 nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_MSG,
2861 status_msg))
2862 goto nla_put_failure;
2863 if (component &&
2864 nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_COMPONENT,
2865 component))
2866 goto nla_put_failure;
2867 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_DONE,
2868 done, DEVLINK_ATTR_PAD))
2869 goto nla_put_failure;
2870 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TOTAL,
2871 total, DEVLINK_ATTR_PAD))
2872 goto nla_put_failure;
2873
2874out:
2875 genlmsg_end(msg, hdr);
2876 return 0;
2877
2878nla_put_failure:
2879 genlmsg_cancel(msg, hdr);
2880 return -EMSGSIZE;
2881}
2882
2883static void __devlink_flash_update_notify(struct devlink *devlink,
2884 enum devlink_command cmd,
2885 const char *status_msg,
2886 const char *component,
2887 unsigned long done,
2888 unsigned long total)
2889{
2890 struct sk_buff *msg;
2891 int err;
2892
2893 WARN_ON(cmd != DEVLINK_CMD_FLASH_UPDATE &&
2894 cmd != DEVLINK_CMD_FLASH_UPDATE_END &&
2895 cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS);
2896
2897 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2898 if (!msg)
2899 return;
2900
2901 err = devlink_nl_flash_update_fill(msg, devlink, cmd, status_msg,
2902 component, done, total);
2903 if (err)
2904 goto out_free_msg;
2905
2906 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
2907 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
2908 return;
2909
2910out_free_msg:
2911 nlmsg_free(msg);
2912}
2913
2914void devlink_flash_update_begin_notify(struct devlink *devlink)
2915{
2916 __devlink_flash_update_notify(devlink,
2917 DEVLINK_CMD_FLASH_UPDATE,
2918 NULL, NULL, 0, 0);
2919}
2920EXPORT_SYMBOL_GPL(devlink_flash_update_begin_notify);
2921
2922void devlink_flash_update_end_notify(struct devlink *devlink)
2923{
2924 __devlink_flash_update_notify(devlink,
2925 DEVLINK_CMD_FLASH_UPDATE_END,
2926 NULL, NULL, 0, 0);
2927}
2928EXPORT_SYMBOL_GPL(devlink_flash_update_end_notify);
2929
2930void devlink_flash_update_status_notify(struct devlink *devlink,
2931 const char *status_msg,
2932 const char *component,
2933 unsigned long done,
2934 unsigned long total)
2935{
2936 __devlink_flash_update_notify(devlink,
2937 DEVLINK_CMD_FLASH_UPDATE_STATUS,
2938 status_msg, component, done, total);
2939}
2940EXPORT_SYMBOL_GPL(devlink_flash_update_status_notify);
2941
76726ccb
JK		 2942static int devlink_nl_cmd_flash_update(struct sk_buff *skb,
2943 struct genl_info *info)
2944{
2945 struct devlink *devlink = info->user_ptr[0];
2946 const char *file_name, *component;
2947 struct nlattr *nla_component;
2948
2949 if (!devlink->ops->flash_update)
2950 return -EOPNOTSUPP;
2951
2952 if (!info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME])
2953 return -EINVAL;
2954 file_name = nla_data(info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME]);
2955
2956 nla_component = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_COMPONENT];
2957 component = nla_component ? nla_data(nla_component) : NULL;
2958
2959 return devlink->ops->flash_update(devlink, file_name, component,
2960 info->extack);
2961}
2962
036467c3
MS		 2963static const struct devlink_param devlink_param_generic[] = {
2964 {
2965 .id = DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET,
2966 .name = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_NAME,
2967 .type = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_TYPE,
2968 },
2969 {
2970 .id = DEVLINK_PARAM_GENERIC_ID_MAX_MACS,
2971 .name = DEVLINK_PARAM_GENERIC_MAX_MACS_NAME,
2972 .type = DEVLINK_PARAM_GENERIC_MAX_MACS_TYPE,
2973 },
f567bcda
VV		 2974 {
2975 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_SRIOV,
2976 .name = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_NAME,
2977 .type = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_TYPE,
2978 },
f6a69885
AV		 2979 {
2980 .id = DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT,
2981 .name = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_NAME,
2982 .type = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_TYPE,
2983 },
e3b51061
VV		 2984 {
2985 .id = DEVLINK_PARAM_GENERIC_ID_IGNORE_ARI,
2986 .name = DEVLINK_PARAM_GENERIC_IGNORE_ARI_NAME,
2987 .type = DEVLINK_PARAM_GENERIC_IGNORE_ARI_TYPE,
2988 },
f61cba42
VV		 2989 {
2990 .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX,
2991 .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_NAME,
2992 .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_TYPE,
2993 },
16511789
VV		 2994 {
2995 .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN,
2996 .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_NAME,
2997 .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_TYPE,
2998 },
846e980a
ST		 2999 {
3000 .id = DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY,
3001 .name = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_NAME,
3002 .type = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_TYPE,
3003 },
5bbd21df
DM		 3004 {
3005 .id = DEVLINK_PARAM_GENERIC_ID_RESET_DEV_ON_DRV_PROBE,
3006 .name = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_NAME,
3007 .type = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_TYPE,
3008 },
6c7295e1
MG		 3009 {
3010 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_ROCE,
3011 .name = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_NAME,
3012 .type = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_TYPE,
3013 },
036467c3 3014};
eabaef18
MS		 3015
3016static int devlink_param_generic_verify(const struct devlink_param *param)
3017{
3018 /* verify it match generic parameter by id and name */
3019 if (param->id > DEVLINK_PARAM_GENERIC_ID_MAX)
3020 return -EINVAL;
3021 if (strcmp(param->name, devlink_param_generic[param->id].name))
3022 return -ENOENT;
3023
3024 WARN_ON(param->type != devlink_param_generic[param->id].type);
3025
3026 return 0;
3027}
3028
3029static int devlink_param_driver_verify(const struct devlink_param *param)
3030{
3031 int i;
3032
3033 if (param->id <= DEVLINK_PARAM_GENERIC_ID_MAX)
3034 return -EINVAL;
3035 /* verify no such name in generic params */
3036 for (i = 0; i <= DEVLINK_PARAM_GENERIC_ID_MAX; i++)
3037 if (!strcmp(param->name, devlink_param_generic[i].name))
3038 return -EEXIST;
3039
3040 return 0;
3041}
3042
3043static struct devlink_param_item *
3044devlink_param_find_by_name(struct list_head *param_list,
3045 const char *param_name)
3046{
3047 struct devlink_param_item *param_item;
3048
3049 list_for_each_entry(param_item, param_list, list)
3050 if (!strcmp(param_item->param->name, param_name))
3051 return param_item;
3052 return NULL;
3053}
3054
ec01aeb1
MS		 3055static struct devlink_param_item *
3056devlink_param_find_by_id(struct list_head *param_list, u32 param_id)
3057{
3058 struct devlink_param_item *param_item;
3059
3060 list_for_each_entry(param_item, param_list, list)
3061 if (param_item->param->id == param_id)
3062 return param_item;
3063 return NULL;
3064}
3065
45f05def
MS		 3066static bool
3067devlink_param_cmode_is_supported(const struct devlink_param *param,
3068 enum devlink_param_cmode cmode)
3069{
3070 return test_bit(cmode, &param->supported_cmodes);
3071}
3072
3073static int devlink_param_get(struct devlink *devlink,
3074 const struct devlink_param *param,
3075 struct devlink_param_gset_ctx *ctx)
3076{
3077 if (!param->get)
3078 return -EOPNOTSUPP;
3079 return param->get(devlink, param->id, ctx);
3080}
3081
e3b7ca18
MS		 3082static int devlink_param_set(struct devlink *devlink,
3083 const struct devlink_param *param,
3084 struct devlink_param_gset_ctx *ctx)
3085{
3086 if (!param->set)
3087 return -EOPNOTSUPP;
3088 return param->set(devlink, param->id, ctx);
3089}
3090
45f05def
MS		 3091static int
3092devlink_param_type_to_nla_type(enum devlink_param_type param_type)
3093{
3094 switch (param_type) {
3095 case DEVLINK_PARAM_TYPE_U8:
3096 return NLA_U8;
3097 case DEVLINK_PARAM_TYPE_U16:
3098 return NLA_U16;
3099 case DEVLINK_PARAM_TYPE_U32:
3100 return NLA_U32;
3101 case DEVLINK_PARAM_TYPE_STRING:
3102 return NLA_STRING;
3103 case DEVLINK_PARAM_TYPE_BOOL:
3104 return NLA_FLAG;
3105 default:
3106 return -EINVAL;
3107 }
3108}
3109
3110static int
3111devlink_nl_param_value_fill_one(struct sk_buff *msg,
3112 enum devlink_param_type type,
3113 enum devlink_param_cmode cmode,
3114 union devlink_param_value val)
3115{
3116 struct nlattr *param_value_attr;
3117
ae0be8de
MK		 3118 param_value_attr = nla_nest_start_noflag(msg,
3119 DEVLINK_ATTR_PARAM_VALUE);
45f05def
MS		 3120 if (!param_value_attr)
3121 goto nla_put_failure;
3122
3123 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_CMODE, cmode))
3124 goto value_nest_cancel;
3125
3126 switch (type) {
3127 case DEVLINK_PARAM_TYPE_U8:
3128 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu8))
3129 goto value_nest_cancel;
3130 break;
3131 case DEVLINK_PARAM_TYPE_U16:
3132 if (nla_put_u16(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu16))
3133 goto value_nest_cancel;
3134 break;
3135 case DEVLINK_PARAM_TYPE_U32:
3136 if (nla_put_u32(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu32))
3137 goto value_nest_cancel;
3138 break;
3139 case DEVLINK_PARAM_TYPE_STRING:
3140 if (nla_put_string(msg, DEVLINK_ATTR_PARAM_VALUE_DATA,
3141 val.vstr))
3142 goto value_nest_cancel;
3143 break;
3144 case DEVLINK_PARAM_TYPE_BOOL:
3145 if (val.vbool &&
3146 nla_put_flag(msg, DEVLINK_ATTR_PARAM_VALUE_DATA))
3147 goto value_nest_cancel;
3148 break;
3149 }
3150
3151 nla_nest_end(msg, param_value_attr);
3152 return 0;
3153
3154value_nest_cancel:
3155 nla_nest_cancel(msg, param_value_attr);
3156nla_put_failure:
3157 return -EMSGSIZE;
3158}
3159
3160static int devlink_nl_param_fill(struct sk_buff *msg, struct devlink *devlink,
f4601dee 3161 unsigned int port_index,
45f05def
MS		 3162 struct devlink_param_item *param_item,
3163 enum devlink_command cmd,
3164 u32 portid, u32 seq, int flags)
3165{
3166 union devlink_param_value param_value[DEVLINK_PARAM_CMODE_MAX + 1];
7c62cfb8 3167 bool param_value_set[DEVLINK_PARAM_CMODE_MAX + 1] = {};
45f05def
MS		 3168 const struct devlink_param *param = param_item->param;
3169 struct devlink_param_gset_ctx ctx;
3170 struct nlattr *param_values_list;
3171 struct nlattr *param_attr;
3172 int nla_type;
3173 void *hdr;
3174 int err;
3175 int i;
3176
3177 /* Get value from driver part to driverinit configuration mode */
3178 for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
3179 if (!devlink_param_cmode_is_supported(param, i))
3180 continue;
3181 if (i == DEVLINK_PARAM_CMODE_DRIVERINIT) {
3182 if (!param_item->driverinit_value_valid)
3183 return -EOPNOTSUPP;
3184 param_value[i] = param_item->driverinit_value;
3185 } else {
7c62cfb8
JP		 3186 if (!param_item->published)
3187 continue;
45f05def
MS		 3188 ctx.cmode = i;
3189 err = devlink_param_get(devlink, param, &ctx);
3190 if (err)
3191 return err;
3192 param_value[i] = ctx.val;
3193 }
7c62cfb8 3194 param_value_set[i] = true;
45f05def
MS		 3195 }
3196
3197 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
3198 if (!hdr)
3199 return -EMSGSIZE;
3200
3201 if (devlink_nl_put_handle(msg, devlink))
3202 goto genlmsg_cancel;
f4601dee 3203
c1e5786d
VV		 3204 if (cmd == DEVLINK_CMD_PORT_PARAM_GET ||
3205 cmd == DEVLINK_CMD_PORT_PARAM_NEW ||
3206 cmd == DEVLINK_CMD_PORT_PARAM_DEL)
f4601dee
VV		 3207 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, port_index))
3208 goto genlmsg_cancel;
3209
ae0be8de 3210 param_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PARAM);
45f05def
MS		 3211 if (!param_attr)
3212 goto genlmsg_cancel;
3213 if (nla_put_string(msg, DEVLINK_ATTR_PARAM_NAME, param->name))
3214 goto param_nest_cancel;
3215 if (param->generic && nla_put_flag(msg, DEVLINK_ATTR_PARAM_GENERIC))
3216 goto param_nest_cancel;
3217
3218 nla_type = devlink_param_type_to_nla_type(param->type);
3219 if (nla_type < 0)
3220 goto param_nest_cancel;
3221 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_TYPE, nla_type))
3222 goto param_nest_cancel;
3223
ae0be8de
MK		 3224 param_values_list = nla_nest_start_noflag(msg,
3225 DEVLINK_ATTR_PARAM_VALUES_LIST);
45f05def
MS		 3226 if (!param_values_list)
3227 goto param_nest_cancel;
3228
3229 for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
7c62cfb8 3230 if (!param_value_set[i])
45f05def
MS		 3231 continue;
3232 err = devlink_nl_param_value_fill_one(msg, param->type,
3233 i, param_value[i]);
3234 if (err)
3235 goto values_list_nest_cancel;
3236 }
3237
3238 nla_nest_end(msg, param_values_list);
3239 nla_nest_end(msg, param_attr);
3240 genlmsg_end(msg, hdr);
3241 return 0;
3242
3243values_list_nest_cancel:
3244 nla_nest_end(msg, param_values_list);
3245param_nest_cancel:
3246 nla_nest_cancel(msg, param_attr);
3247genlmsg_cancel:
3248 genlmsg_cancel(msg, hdr);
3249 return -EMSGSIZE;
3250}
3251
ea601e17 3252static void devlink_param_notify(struct devlink *devlink,
c1e5786d 3253 unsigned int port_index,
ea601e17
MS		 3254 struct devlink_param_item *param_item,
3255 enum devlink_command cmd)
3256{
3257 struct sk_buff *msg;
3258 int err;
3259
c1e5786d
VV		 3260 WARN_ON(cmd != DEVLINK_CMD_PARAM_NEW && cmd != DEVLINK_CMD_PARAM_DEL &&
3261 cmd != DEVLINK_CMD_PORT_PARAM_NEW &&
3262 cmd != DEVLINK_CMD_PORT_PARAM_DEL);
ea601e17
MS		 3263
3264 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3265 if (!msg)
3266 return;
c1e5786d
VV		 3267 err = devlink_nl_param_fill(msg, devlink, port_index, param_item, cmd,
3268 0, 0, 0);
ea601e17
MS		 3269 if (err) {
3270 nlmsg_free(msg);
3271 return;
3272 }
3273
3274 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
3275 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
3276}
3277
45f05def
MS		 3278static int devlink_nl_cmd_param_get_dumpit(struct sk_buff *msg,
3279 struct netlink_callback *cb)
3280{
3281 struct devlink_param_item *param_item;
3282 struct devlink *devlink;
3283 int start = cb->args[0];
3284 int idx = 0;
c62c2cfb 3285 int err = 0;
45f05def
MS		 3286
3287 mutex_lock(&devlink_mutex);
3288 list_for_each_entry(devlink, &devlink_list, list) {
3289 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
3290 continue;
3291 mutex_lock(&devlink->lock);
3292 list_for_each_entry(param_item, &devlink->param_list, list) {
3293 if (idx < start) {
3294 idx++;
3295 continue;
3296 }
f4601dee 3297 err = devlink_nl_param_fill(msg, devlink, 0, param_item,
45f05def
MS		 3298 DEVLINK_CMD_PARAM_GET,
3299 NETLINK_CB(cb->skb).portid,
3300 cb->nlh->nlmsg_seq,
3301 NLM_F_MULTI);
93c2fcb0 3302 if (err && err != -EOPNOTSUPP) {
45f05def
MS		 3303 mutex_unlock(&devlink->lock);
3304 goto out;
3305 }
3306 idx++;
3307 }
3308 mutex_unlock(&devlink->lock);
3309 }
3310out:
3311 mutex_unlock(&devlink_mutex);
3312
c62c2cfb
JP		 3313 if (err != -EMSGSIZE)
3314 return err;
3315
45f05def
MS		 3316 cb->args[0] = idx;
3317 return msg->len;
3318}
3319
e3b7ca18
MS		 3320static int
3321devlink_param_type_get_from_info(struct genl_info *info,
3322 enum devlink_param_type *param_type)
3323{
3324 if (!info->attrs[DEVLINK_ATTR_PARAM_TYPE])
3325 return -EINVAL;
3326
3327 switch (nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_TYPE])) {
3328 case NLA_U8:
3329 *param_type = DEVLINK_PARAM_TYPE_U8;
3330 break;
3331 case NLA_U16:
3332 *param_type = DEVLINK_PARAM_TYPE_U16;
3333 break;
3334 case NLA_U32:
3335 *param_type = DEVLINK_PARAM_TYPE_U32;
3336 break;
3337 case NLA_STRING:
3338 *param_type = DEVLINK_PARAM_TYPE_STRING;
3339 break;
3340 case NLA_FLAG:
3341 *param_type = DEVLINK_PARAM_TYPE_BOOL;
3342 break;
3343 default:
3344 return -EINVAL;
3345 }
3346
3347 return 0;
3348}
3349
3350static int
3351devlink_param_value_get_from_info(const struct devlink_param *param,
3352 struct genl_info *info,
3353 union devlink_param_value *value)
3354{
8750939b 3355 struct nlattr *param_data;
f355cfcd
MS		 3356 int len;
3357
8750939b
JK		 3358 param_data = info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA];
3359
3360 if (param->type != DEVLINK_PARAM_TYPE_BOOL && !param_data)
e3b7ca18
MS		 3361 return -EINVAL;
3362
3363 switch (param->type) {
3364 case DEVLINK_PARAM_TYPE_U8:
8750939b
JK		 3365 if (nla_len(param_data) != sizeof(u8))
3366 return -EINVAL;
3367 value->vu8 = nla_get_u8(param_data);
e3b7ca18
MS		 3368 break;
3369 case DEVLINK_PARAM_TYPE_U16:
8750939b
JK		 3370 if (nla_len(param_data) != sizeof(u16))
3371 return -EINVAL;
3372 value->vu16 = nla_get_u16(param_data);
e3b7ca18
MS		 3373 break;
3374 case DEVLINK_PARAM_TYPE_U32:
8750939b
JK		 3375 if (nla_len(param_data) != sizeof(u32))
3376 return -EINVAL;
3377 value->vu32 = nla_get_u32(param_data);
e3b7ca18
MS		 3378 break;
3379 case DEVLINK_PARAM_TYPE_STRING:
8750939b
JK		 3380 len = strnlen(nla_data(param_data), nla_len(param_data));
3381 if (len == nla_len(param_data) ||
bde74ad1 3382 len >= __DEVLINK_PARAM_MAX_STRING_VALUE)
e3b7ca18 3383 return -EINVAL;
8750939b 3384 strcpy(value->vstr, nla_data(param_data));
e3b7ca18
MS		 3385 break;
3386 case DEVLINK_PARAM_TYPE_BOOL:
8750939b
JK		 3387 if (param_data && nla_len(param_data))
3388 return -EINVAL;
3389 value->vbool = nla_get_flag(param_data);
e3b7ca18
MS		 3390 break;
3391 }
3392 return 0;
3393}
3394
45f05def 3395static struct devlink_param_item *
f4601dee 3396devlink_param_get_from_info(struct list_head *param_list,
45f05def
MS		 3397 struct genl_info *info)
3398{
3399 char *param_name;
3400
3401 if (!info->attrs[DEVLINK_ATTR_PARAM_NAME])
3402 return NULL;
3403
3404 param_name = nla_data(info->attrs[DEVLINK_ATTR_PARAM_NAME]);
f4601dee 3405 return devlink_param_find_by_name(param_list, param_name);
45f05def
MS		 3406}
3407
3408static int devlink_nl_cmd_param_get_doit(struct sk_buff *skb,
3409 struct genl_info *info)
3410{
3411 struct devlink *devlink = info->user_ptr[0];
3412 struct devlink_param_item *param_item;
3413 struct sk_buff *msg;
3414 int err;
3415
f4601dee 3416 param_item = devlink_param_get_from_info(&devlink->param_list, info);
45f05def
MS		 3417 if (!param_item)
3418 return -EINVAL;
3419
3420 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3421 if (!msg)
3422 return -ENOMEM;
3423
f4601dee 3424 err = devlink_nl_param_fill(msg, devlink, 0, param_item,
45f05def
MS		 3425 DEVLINK_CMD_PARAM_GET,
3426 info->snd_portid, info->snd_seq, 0);
3427 if (err) {
3428 nlmsg_free(msg);
3429 return err;
3430 }
3431
3432 return genlmsg_reply(msg, info);
3433}
3434
9c54873b 3435static int __devlink_nl_cmd_param_set_doit(struct devlink *devlink,
c1e5786d 3436 unsigned int port_index,
9c54873b
VV		 3437 struct list_head *param_list,
3438 struct genl_info *info,
3439 enum devlink_command cmd)
e3b7ca18 3440{
e3b7ca18
MS		 3441 enum devlink_param_type param_type;
3442 struct devlink_param_gset_ctx ctx;
3443 enum devlink_param_cmode cmode;
3444 struct devlink_param_item *param_item;
3445 const struct devlink_param *param;
3446 union devlink_param_value value;
3447 int err = 0;
3448
9c54873b 3449 param_item = devlink_param_get_from_info(param_list, info);
e3b7ca18
MS		 3450 if (!param_item)
3451 return -EINVAL;
3452 param = param_item->param;
3453 err = devlink_param_type_get_from_info(info, &param_type);
3454 if (err)
3455 return err;
3456 if (param_type != param->type)
3457 return -EINVAL;
3458 err = devlink_param_value_get_from_info(param, info, &value);
3459 if (err)
3460 return err;
3461 if (param->validate) {
3462 err = param->validate(devlink, param->id, value, info->extack);
3463 if (err)
3464 return err;
3465 }
3466
3467 if (!info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE])
3468 return -EINVAL;
3469 cmode = nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE]);
3470 if (!devlink_param_cmode_is_supported(param, cmode))
3471 return -EOPNOTSUPP;
3472
3473 if (cmode == DEVLINK_PARAM_CMODE_DRIVERINIT) {
1276534c
MS		 3474 if (param->type == DEVLINK_PARAM_TYPE_STRING)
3475 strcpy(param_item->driverinit_value.vstr, value.vstr);
3476 else
3477 param_item->driverinit_value = value;
e3b7ca18
MS		 3478 param_item->driverinit_value_valid = true;
3479 } else {
3480 if (!param->set)
3481 return -EOPNOTSUPP;
3482 ctx.val = value;
3483 ctx.cmode = cmode;
3484 err = devlink_param_set(devlink, param, &ctx);
3485 if (err)
3486 return err;
3487 }
3488
c1e5786d 3489 devlink_param_notify(devlink, port_index, param_item, cmd);
e3b7ca18
MS		 3490 return 0;
3491}
3492
9c54873b
VV		 3493static int devlink_nl_cmd_param_set_doit(struct sk_buff *skb,
3494 struct genl_info *info)
3495{
3496 struct devlink *devlink = info->user_ptr[0];
3497
c1e5786d 3498 return __devlink_nl_cmd_param_set_doit(devlink, 0, &devlink->param_list,
9c54873b
VV		 3499 info, DEVLINK_CMD_PARAM_NEW);
3500}
3501
eabaef18 3502static int devlink_param_register_one(struct devlink *devlink,
c1e5786d 3503 unsigned int port_index,
39e6160e 3504 struct list_head *param_list,
c1e5786d
VV		 3505 const struct devlink_param *param,
3506 enum devlink_command cmd)
eabaef18
MS		 3507{
3508 struct devlink_param_item *param_item;
3509
39e6160e 3510 if (devlink_param_find_by_name(param_list, param->name))
eabaef18
MS		 3511 return -EEXIST;
3512
3513 if (param->supported_cmodes == BIT(DEVLINK_PARAM_CMODE_DRIVERINIT))
3514 WARN_ON(param->get || param->set);
3515 else
3516 WARN_ON(!param->get || !param->set);
3517
3518 param_item = kzalloc(sizeof(*param_item), GFP_KERNEL);
3519 if (!param_item)
3520 return -ENOMEM;
3521 param_item->param = param;
3522
39e6160e 3523 list_add_tail(&param_item->list, param_list);
c1e5786d 3524 devlink_param_notify(devlink, port_index, param_item, cmd);
eabaef18
MS		 3525 return 0;
3526}
3527
3528static void devlink_param_unregister_one(struct devlink *devlink,
c1e5786d 3529 unsigned int port_index,
39e6160e 3530 struct list_head *param_list,
c1e5786d
VV		 3531 const struct devlink_param *param,
3532 enum devlink_command cmd)
eabaef18
MS		 3533{
3534 struct devlink_param_item *param_item;
3535
39e6160e 3536 param_item = devlink_param_find_by_name(param_list, param->name);
eabaef18 3537 WARN_ON(!param_item);
c1e5786d 3538 devlink_param_notify(devlink, port_index, param_item, cmd);
eabaef18
MS		 3539 list_del(&param_item->list);
3540 kfree(param_item);
3541}
3542
f4601dee
VV		 3543static int devlink_nl_cmd_port_param_get_dumpit(struct sk_buff *msg,
3544 struct netlink_callback *cb)
3545{
3546 struct devlink_param_item *param_item;
3547 struct devlink_port *devlink_port;
3548 struct devlink *devlink;
3549 int start = cb->args[0];
3550 int idx = 0;
c62c2cfb 3551 int err = 0;
f4601dee
VV		 3552
3553 mutex_lock(&devlink_mutex);
3554 list_for_each_entry(devlink, &devlink_list, list) {
3555 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
3556 continue;
3557 mutex_lock(&devlink->lock);
3558 list_for_each_entry(devlink_port, &devlink->port_list, list) {
3559 list_for_each_entry(param_item,
3560 &devlink_port->param_list, list) {
3561 if (idx < start) {
3562 idx++;
3563 continue;
3564 }
3565 err = devlink_nl_param_fill(msg,
3566 devlink_port->devlink,
3567 devlink_port->index, param_item,
3568 DEVLINK_CMD_PORT_PARAM_GET,
3569 NETLINK_CB(cb->skb).portid,
3570 cb->nlh->nlmsg_seq,
3571 NLM_F_MULTI);
93c2fcb0 3572 if (err && err != -EOPNOTSUPP) {
f4601dee
VV		 3573 mutex_unlock(&devlink->lock);
3574 goto out;
3575 }
3576 idx++;
3577 }
3578 }
3579 mutex_unlock(&devlink->lock);
3580 }
3581out:
3582 mutex_unlock(&devlink_mutex);
3583
c62c2cfb
JP		 3584 if (err != -EMSGSIZE)
3585 return err;
3586
f4601dee
VV		 3587 cb->args[0] = idx;
3588 return msg->len;
3589}
3590
3591static int devlink_nl_cmd_port_param_get_doit(struct sk_buff *skb,
3592 struct genl_info *info)
3593{
3594 struct devlink_port *devlink_port = info->user_ptr[0];
3595 struct devlink_param_item *param_item;
3596 struct sk_buff *msg;
3597 int err;
3598
3599 param_item = devlink_param_get_from_info(&devlink_port->param_list,
3600 info);
3601 if (!param_item)
3602 return -EINVAL;
3603
3604 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3605 if (!msg)
3606 return -ENOMEM;
3607
3608 err = devlink_nl_param_fill(msg, devlink_port->devlink,
3609 devlink_port->index, param_item,
3610 DEVLINK_CMD_PORT_PARAM_GET,
3611 info->snd_portid, info->snd_seq, 0);
3612 if (err) {
3613 nlmsg_free(msg);
3614 return err;
3615 }
3616
3617 return genlmsg_reply(msg, info);
3618}
3619
9c54873b
VV		 3620static int devlink_nl_cmd_port_param_set_doit(struct sk_buff *skb,
3621 struct genl_info *info)
3622{
3623 struct devlink_port *devlink_port = info->user_ptr[0];
3624
3625 return __devlink_nl_cmd_param_set_doit(devlink_port->devlink,
c1e5786d
VV		 3626 devlink_port->index,
3627 &devlink_port->param_list, info,
3628 DEVLINK_CMD_PORT_PARAM_NEW);
9c54873b
VV		 3629}
3630
a006d467
AV		 3631static int devlink_nl_region_snapshot_id_put(struct sk_buff *msg,
3632 struct devlink *devlink,
3633 struct devlink_snapshot *snapshot)
3634{
3635 struct nlattr *snap_attr;
3636 int err;
3637
ae0be8de 3638 snap_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_SNAPSHOT);
a006d467
AV		 3639 if (!snap_attr)
3640 return -EINVAL;
3641
3642 err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID, snapshot->id);
3643 if (err)
3644 goto nla_put_failure;
3645
3646 nla_nest_end(msg, snap_attr);
3647 return 0;
3648
3649nla_put_failure:
3650 nla_nest_cancel(msg, snap_attr);
3651 return err;
3652}
3653
3654static int devlink_nl_region_snapshots_id_put(struct sk_buff *msg,
3655 struct devlink *devlink,
3656 struct devlink_region *region)
3657{
3658 struct devlink_snapshot *snapshot;
3659 struct nlattr *snapshots_attr;
3660 int err;
3661
ae0be8de
MK		 3662 snapshots_attr = nla_nest_start_noflag(msg,
3663 DEVLINK_ATTR_REGION_SNAPSHOTS);
a006d467
AV		 3664 if (!snapshots_attr)
3665 return -EINVAL;
3666
3667 list_for_each_entry(snapshot, &region->snapshot_list, list) {
3668 err = devlink_nl_region_snapshot_id_put(msg, devlink, snapshot);
3669 if (err)
3670 goto nla_put_failure;
3671 }
3672
3673 nla_nest_end(msg, snapshots_attr);
3674 return 0;
3675
3676nla_put_failure:
3677 nla_nest_cancel(msg, snapshots_attr);
3678 return err;
3679}
3680
d8db7ea5
AV		 3681static int devlink_nl_region_fill(struct sk_buff *msg, struct devlink *devlink,
3682 enum devlink_command cmd, u32 portid,
3683 u32 seq, int flags,
3684 struct devlink_region *region)
3685{
3686 void *hdr;
3687 int err;
3688
3689 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
3690 if (!hdr)
3691 return -EMSGSIZE;
3692
3693 err = devlink_nl_put_handle(msg, devlink);
3694 if (err)
3695 goto nla_put_failure;
3696
e8937681 3697 err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME, region->ops->name);
d8db7ea5
AV		 3698 if (err)
3699 goto nla_put_failure;
3700
3701 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
3702 region->size,
3703 DEVLINK_ATTR_PAD);
3704 if (err)
3705 goto nla_put_failure;
3706
a006d467
AV		 3707 err = devlink_nl_region_snapshots_id_put(msg, devlink, region);
3708 if (err)
3709 goto nla_put_failure;
3710
d8db7ea5
AV		 3711 genlmsg_end(msg, hdr);
3712 return 0;
3713
3714nla_put_failure:
3715 genlmsg_cancel(msg, hdr);
3716 return err;
3717}
3718
dd86fec7
JK		 3719static struct sk_buff *
3720devlink_nl_region_notify_build(struct devlink_region *region,
3721 struct devlink_snapshot *snapshot,
3722 enum devlink_command cmd, u32 portid, u32 seq)
866319bb
AV		 3723{
3724 struct devlink *devlink = region->devlink;
3725 struct sk_buff *msg;
3726 void *hdr;
3727 int err;
3728
866319bb
AV		 3729
3730 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3731 if (!msg)
dd86fec7 3732 return ERR_PTR(-ENOMEM);
866319bb 3733
dd86fec7
JK		 3734 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, 0, cmd);
3735 if (!hdr) {
3736 err = -EMSGSIZE;
866319bb 3737 goto out_free_msg;
dd86fec7 3738 }
866319bb
AV		 3739
3740 err = devlink_nl_put_handle(msg, devlink);
3741 if (err)
3742 goto out_cancel_msg;
3743
3744 err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME,
e8937681 3745 region->ops->name);
866319bb
AV		 3746 if (err)
3747 goto out_cancel_msg;
3748
3749 if (snapshot) {
3750 err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID,
3751 snapshot->id);
3752 if (err)
3753 goto out_cancel_msg;
3754 } else {
3755 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
3756 region->size, DEVLINK_ATTR_PAD);
3757 if (err)
3758 goto out_cancel_msg;
3759 }
3760 genlmsg_end(msg, hdr);
3761
dd86fec7 3762 return msg;
866319bb
AV		 3763
3764out_cancel_msg:
3765 genlmsg_cancel(msg, hdr);
3766out_free_msg:
3767 nlmsg_free(msg);
dd86fec7
JK		 3768 return ERR_PTR(err);
3769}
3770
3771static void devlink_nl_region_notify(struct devlink_region *region,
3772 struct devlink_snapshot *snapshot,
3773 enum devlink_command cmd)
3774{
3775 struct devlink *devlink = region->devlink;
3776 struct sk_buff *msg;
3777
3778 WARN_ON(cmd != DEVLINK_CMD_REGION_NEW && cmd != DEVLINK_CMD_REGION_DEL);
3779
3780 msg = devlink_nl_region_notify_build(region, snapshot, cmd, 0, 0);
3781 if (IS_ERR(msg))
3782 return;
3783
3784 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
3785 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
866319bb
AV		 3786}
3787
12102436
JK		 3788/**
3789 * __devlink_snapshot_id_increment - Increment number of snapshots using an id
3790 * @devlink: devlink instance
3791 * @id: the snapshot id
3792 *
3793 * Track when a new snapshot begins using an id. Load the count for the
3794 * given id from the snapshot xarray, increment it, and store it back.
3795 *
3796 * Called when a new snapshot is created with the given id.
3797 *
3798 * The id *must* have been previously allocated by
3799 * devlink_region_snapshot_id_get().
3800 *
3801 * Returns 0 on success, or an error on failure.
3802 */
3803static int __devlink_snapshot_id_increment(struct devlink *devlink, u32 id)
3804{
3805 unsigned long count;
3806 void *p;
3807
3808 lockdep_assert_held(&devlink->lock);
3809
3810 p = xa_load(&devlink->snapshot_ids, id);
3811 if (WARN_ON(!p))
3812 return -EINVAL;
3813
3814 if (WARN_ON(!xa_is_value(p)))
3815 return -EINVAL;
3816
3817 count = xa_to_value(p);
3818 count++;
3819
3820 return xa_err(xa_store(&devlink->snapshot_ids, id, xa_mk_value(count),
3821 GFP_KERNEL));
3822}
3823
3824/**
3825 * __devlink_snapshot_id_decrement - Decrease number of snapshots using an id
3826 * @devlink: devlink instance
3827 * @id: the snapshot id
3828 *
3829 * Track when a snapshot is deleted and stops using an id. Load the count
3830 * for the given id from the snapshot xarray, decrement it, and store it
3831 * back.
3832 *
3833 * If the count reaches zero, erase this id from the xarray, freeing it
3834 * up for future re-use by devlink_region_snapshot_id_get().
3835 *
3836 * Called when a snapshot using the given id is deleted, and when the
3837 * initial allocator of the id is finished using it.
3838 */
3839static void __devlink_snapshot_id_decrement(struct devlink *devlink, u32 id)
3840{
3841 unsigned long count;
3842 void *p;
3843
3844 lockdep_assert_held(&devlink->lock);
3845
3846 p = xa_load(&devlink->snapshot_ids, id);
3847 if (WARN_ON(!p))
3848 return;
3849
3850 if (WARN_ON(!xa_is_value(p)))
3851 return;
3852
3853 count = xa_to_value(p);
3854
3855 if (count > 1) {
3856 count--;
3857 xa_store(&devlink->snapshot_ids, id, xa_mk_value(count),
3858 GFP_KERNEL);
3859 } else {
3860 /* If this was the last user, we can erase this id */
3861 xa_erase(&devlink->snapshot_ids, id);
3862 }
3863}
3864
b9a17abf
JK		 3865/**
3866 * __devlink_snapshot_id_insert - Insert a specific snapshot ID
3867 * @devlink: devlink instance
3868 * @id: the snapshot id
3869 *
3870 * Mark the given snapshot id as used by inserting a zero value into the
3871 * snapshot xarray.
3872 *
3873 * This must be called while holding the devlink instance lock. Unlike
3874 * devlink_snapshot_id_get, the initial reference count is zero, not one.
3875 * It is expected that the id will immediately be used before
3876 * releasing the devlink instance lock.
3877 *
3878 * Returns zero on success, or an error code if the snapshot id could not
3879 * be inserted.
3880 */
3881static int __devlink_snapshot_id_insert(struct devlink *devlink, u32 id)
3882{
3883 lockdep_assert_held(&devlink->lock);
3884
3885 if (WARN_ON(xa_load(&devlink->snapshot_ids, id)))
3886 return -EEXIST;
3887
3888 return xa_err(xa_store(&devlink->snapshot_ids, id, xa_mk_value(0),
3889 GFP_KERNEL));
3890}
3891
7000108f
JK		 3892/**
3893 * __devlink_region_snapshot_id_get - get snapshot ID
3894 * @devlink: devlink instance
7ef19d3b 3895 * @id: storage to return snapshot id
7000108f 3896 *
7ef19d3b
JK		 3897 * Allocates a new snapshot id. Returns zero on success, or a negative
3898 * error on failure. Must be called while holding the devlink instance
3899 * lock.
12102436
JK		 3900 *
3901 * Snapshot IDs are tracked using an xarray which stores the number of
3902 * users of the snapshot id.
3903 *
3904 * Note that the caller of this function counts as a 'user', in order to
3905 * avoid race conditions. The caller must release its hold on the
3906 * snapshot by using devlink_region_snapshot_id_put.
7000108f 3907 */
7ef19d3b 3908static int __devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id)
7000108f
JK		 3909{
3910 lockdep_assert_held(&devlink->lock);
7ef19d3b 3911
12102436
JK		 3912 return xa_alloc(&devlink->snapshot_ids, id, xa_mk_value(1),
3913 xa_limit_32b, GFP_KERNEL);
7000108f
JK		 3914}
3915
cf80faee
JK		 3916/**
3917 * __devlink_region_snapshot_create - create a new snapshot
3918 * This will add a new snapshot of a region. The snapshot
3919 * will be stored on the region struct and can be accessed
3920 * from devlink. This is useful for future analyses of snapshots.
3921 * Multiple snapshots can be created on a region.
3922 * The @snapshot_id should be obtained using the getter function.
3923 *
3924 * Must be called only while holding the devlink instance lock.
3925 *
3926 * @region: devlink region of the snapshot
3927 * @data: snapshot data
3928 * @snapshot_id: snapshot id to be created
3929 */
3930static int
3931__devlink_region_snapshot_create(struct devlink_region *region,
3932 u8 *data, u32 snapshot_id)
3933{
3934 struct devlink *devlink = region->devlink;
3935 struct devlink_snapshot *snapshot;
12102436 3936 int err;
cf80faee
JK		 3937
3938 lockdep_assert_held(&devlink->lock);
3939
3940 /* check if region can hold one more snapshot */
3941 if (region->cur_snapshots == region->max_snapshots)
47a39f61 3942 return -ENOSPC;
cf80faee
JK		 3943
3944 if (devlink_region_snapshot_get_by_id(region, snapshot_id))
3945 return -EEXIST;
3946
3947 snapshot = kzalloc(sizeof(*snapshot), GFP_KERNEL);
3948 if (!snapshot)
3949 return -ENOMEM;
3950
12102436
JK		 3951 err = __devlink_snapshot_id_increment(devlink, snapshot_id);
3952 if (err)
3953 goto err_snapshot_id_increment;
3954
cf80faee
JK		 3955 snapshot->id = snapshot_id;
3956 snapshot->region = region;
3957 snapshot->data = data;
3958
3959 list_add_tail(&snapshot->list, &region->snapshot_list);
3960
3961 region->cur_snapshots++;
3962
3963 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_NEW);
3964 return 0;
12102436
JK		 3965
3966err_snapshot_id_increment:
3967 kfree(snapshot);
3968 return err;
cf80faee
JK		 3969}
3970
92b49822
JP		 3971static void devlink_region_snapshot_del(struct devlink_region *region,
3972 struct devlink_snapshot *snapshot)
3973{
12102436
JK		 3974 struct devlink *devlink = region->devlink;
3975
3976 lockdep_assert_held(&devlink->lock);
3977
92b49822
JP		 3978 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_DEL);
3979 region->cur_snapshots--;
3980 list_del(&snapshot->list);
a0a09f6b 3981 region->ops->destructor(snapshot->data);
12102436 3982 __devlink_snapshot_id_decrement(devlink, snapshot->id);
92b49822
JP		 3983 kfree(snapshot);
3984}
3985
d8db7ea5
AV		 3986static int devlink_nl_cmd_region_get_doit(struct sk_buff *skb,
3987 struct genl_info *info)
3988{
3989 struct devlink *devlink = info->user_ptr[0];
3990 struct devlink_region *region;
3991 const char *region_name;
3992 struct sk_buff *msg;
3993 int err;
3994
3995 if (!info->attrs[DEVLINK_ATTR_REGION_NAME])
3996 return -EINVAL;
3997
3998 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
3999 region = devlink_region_get_by_name(devlink, region_name);
4000 if (!region)
4001 return -EINVAL;
4002
4003 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4004 if (!msg)
4005 return -ENOMEM;
4006
4007 err = devlink_nl_region_fill(msg, devlink, DEVLINK_CMD_REGION_GET,
4008 info->snd_portid, info->snd_seq, 0,
4009 region);
4010 if (err) {
4011 nlmsg_free(msg);
4012 return err;
4013 }
4014
4015 return genlmsg_reply(msg, info);
4016}
4017
4018static int devlink_nl_cmd_region_get_dumpit(struct sk_buff *msg,
4019 struct netlink_callback *cb)
4020{
4021 struct devlink_region *region;
4022 struct devlink *devlink;
4023 int start = cb->args[0];
4024 int idx = 0;
4025 int err;
4026
4027 mutex_lock(&devlink_mutex);
4028 list_for_each_entry(devlink, &devlink_list, list) {
4029 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
4030 continue;
4031
4032 mutex_lock(&devlink->lock);
4033 list_for_each_entry(region, &devlink->region_list, list) {
4034 if (idx < start) {
4035 idx++;
4036 continue;
4037 }
4038 err = devlink_nl_region_fill(msg, devlink,
4039 DEVLINK_CMD_REGION_GET,
4040 NETLINK_CB(cb->skb).portid,
4041 cb->nlh->nlmsg_seq,
4042 NLM_F_MULTI, region);
4043 if (err) {
4044 mutex_unlock(&devlink->lock);
4045 goto out;
4046 }
4047 idx++;
4048 }
4049 mutex_unlock(&devlink->lock);
4050 }
4051out:
4052 mutex_unlock(&devlink_mutex);
4053 cb->args[0] = idx;
4054 return msg->len;
4055}
4056
866319bb
AV		 4057static int devlink_nl_cmd_region_del(struct sk_buff *skb,
4058 struct genl_info *info)
4059{
4060 struct devlink *devlink = info->user_ptr[0];
4061 struct devlink_snapshot *snapshot;
4062 struct devlink_region *region;
4063 const char *region_name;
4064 u32 snapshot_id;
4065
4066 if (!info->attrs[DEVLINK_ATTR_REGION_NAME] ||
4067 !info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID])
4068 return -EINVAL;
4069
4070 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
4071 snapshot_id = nla_get_u32(info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
4072
4073 region = devlink_region_get_by_name(devlink, region_name);
4074 if (!region)
4075 return -EINVAL;
4076
4077 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
4078 if (!snapshot)
4079 return -EINVAL;
4080
92b49822 4081 devlink_region_snapshot_del(region, snapshot);
866319bb
AV		 4082 return 0;
4083}
4084
b9a17abf
JK		 4085static int
4086devlink_nl_cmd_region_new(struct sk_buff *skb, struct genl_info *info)
4087{
4088 struct devlink *devlink = info->user_ptr[0];
4089 struct devlink_region *region;
4090 const char *region_name;
4091 u32 snapshot_id;
4092 u8 *data;
4093 int err;
4094
4095 if (!info->attrs[DEVLINK_ATTR_REGION_NAME]) {
4096 NL_SET_ERR_MSG_MOD(info->extack, "No region name provided");
4097 return -EINVAL;
4098 }
4099
4100 if (!info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]) {
4101 NL_SET_ERR_MSG_MOD(info->extack, "No snapshot id provided");
4102 return -EINVAL;
4103 }
4104
4105 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
4106 region = devlink_region_get_by_name(devlink, region_name);
4107 if (!region) {
4108 NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not exist");
4109 return -EINVAL;
4110 }
4111
4112 if (!region->ops->snapshot) {
4113 NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not support taking an immediate snapshot");
4114 return -EOPNOTSUPP;
4115 }
4116
4117 if (region->cur_snapshots == region->max_snapshots) {
4118 NL_SET_ERR_MSG_MOD(info->extack, "The region has reached the maximum number of stored snapshots");
4119 return -ENOSPC;
4120 }
4121
4122 snapshot_id = nla_get_u32(info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
4123
4124 if (devlink_region_snapshot_get_by_id(region, snapshot_id)) {
4125 NL_SET_ERR_MSG_MOD(info->extack, "The requested snapshot id is already in use");
4126 return -EEXIST;
4127 }
4128
4129 err = __devlink_snapshot_id_insert(devlink, snapshot_id);
4130 if (err)
4131 return err;
4132
4133 err = region->ops->snapshot(devlink, info->extack, &data);
4134 if (err)
4135 goto err_snapshot_capture;
4136
4137 err = __devlink_region_snapshot_create(region, data, snapshot_id);
4138 if (err)
4139 goto err_snapshot_create;
4140
4141 return 0;
4142
4143err_snapshot_create:
4144 region->ops->destructor(data);
4145err_snapshot_capture:
4146 __devlink_snapshot_id_decrement(devlink, snapshot_id);
4147 return err;
4148}
4149
4e54795a
AV		 4150static int devlink_nl_cmd_region_read_chunk_fill(struct sk_buff *msg,
4151 struct devlink *devlink,
4152 u8 *chunk, u32 chunk_size,
4153 u64 addr)
4154{
4155 struct nlattr *chunk_attr;
4156 int err;
4157
ae0be8de 4158 chunk_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_CHUNK);
4e54795a
AV		 4159 if (!chunk_attr)
4160 return -EINVAL;
4161
4162 err = nla_put(msg, DEVLINK_ATTR_REGION_CHUNK_DATA, chunk_size, chunk);
4163 if (err)
4164 goto nla_put_failure;
4165
4166 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_CHUNK_ADDR, addr,
4167 DEVLINK_ATTR_PAD);
4168 if (err)
4169 goto nla_put_failure;
4170
4171 nla_nest_end(msg, chunk_attr);
4172 return 0;
4173
4174nla_put_failure:
4175 nla_nest_cancel(msg, chunk_attr);
4176 return err;
4177}
4178
4179#define DEVLINK_REGION_READ_CHUNK_SIZE 256
4180
4181static int devlink_nl_region_read_snapshot_fill(struct sk_buff *skb,
4182 struct devlink *devlink,
4183 struct devlink_region *region,
4184 struct nlattr **attrs,
4185 u64 start_offset,
4186 u64 end_offset,
4187 bool dump,
4188 u64 *new_offset)
4189{
4190 struct devlink_snapshot *snapshot;
4191 u64 curr_offset = start_offset;
4192 u32 snapshot_id;
4193 int err = 0;
4194
4195 *new_offset = start_offset;
4196
4197 snapshot_id = nla_get_u32(attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
4198 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
4199 if (!snapshot)
4200 return -EINVAL;
4201
3a5e5234
JP		 4202 if (end_offset > region->size || dump)
4203 end_offset = region->size;
4e54795a
AV		 4204
4205 while (curr_offset < end_offset) {
4206 u32 data_size;
4207 u8 *data;
4208
4209 if (end_offset - curr_offset < DEVLINK_REGION_READ_CHUNK_SIZE)
4210 data_size = end_offset - curr_offset;
4211 else
4212 data_size = DEVLINK_REGION_READ_CHUNK_SIZE;
4213
4214 data = &snapshot->data[curr_offset];
4215 err = devlink_nl_cmd_region_read_chunk_fill(skb, devlink,
4216 data, data_size,
4217 curr_offset);
4218 if (err)
4219 break;
4220
4221 curr_offset += data_size;
4222 }
4223 *new_offset = curr_offset;
4224
4225 return err;
4226}
4227
4228static int devlink_nl_cmd_region_read_dumpit(struct sk_buff *skb,
4229 struct netlink_callback *cb)
4230{
ee85da53 4231 const struct genl_dumpit_info *info = genl_dumpit_info(cb);
4e54795a 4232 u64 ret_offset, start_offset, end_offset = 0;
ee85da53 4233 struct nlattr **attrs = info->attrs;
4e54795a
AV		 4234 struct devlink_region *region;
4235 struct nlattr *chunks_attr;
4236 const char *region_name;
4237 struct devlink *devlink;
4238 bool dump = true;
4239 void *hdr;
4240 int err;
4241
4242 start_offset = *((u64 *)&cb->args[0]);
4243
dac7c08f 4244 mutex_lock(&devlink_mutex);
4e54795a 4245 devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
fdd41ec2
PP		 4246 if (IS_ERR(devlink)) {
4247 err = PTR_ERR(devlink);
dac7c08f 4248 goto out_dev;
fdd41ec2 4249 }
4e54795a 4250
4e54795a
AV		 4251 mutex_lock(&devlink->lock);
4252
4253 if (!attrs[DEVLINK_ATTR_REGION_NAME] ||
fdd41ec2
PP		 4254 !attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]) {
4255 err = -EINVAL;
4e54795a 4256 goto out_unlock;
fdd41ec2 4257 }
4e54795a
AV		 4258
4259 region_name = nla_data(attrs[DEVLINK_ATTR_REGION_NAME]);
4260 region = devlink_region_get_by_name(devlink, region_name);
fdd41ec2
PP		 4261 if (!region) {
4262 err = -EINVAL;
4e54795a 4263 goto out_unlock;
fdd41ec2 4264 }
4e54795a 4265
d5b90e99
JK		 4266 /* return 0 if there is no further data to read */
4267 if (start_offset >= region->size) {
4268 err = 0;
4269 goto out_unlock;
4270 }
4271
4e54795a
AV		 4272 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
4273 &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI,
4274 DEVLINK_CMD_REGION_READ);
fdd41ec2
PP		 4275 if (!hdr) {
4276 err = -EMSGSIZE;
4e54795a 4277 goto out_unlock;
fdd41ec2 4278 }
4e54795a
AV		 4279
4280 err = devlink_nl_put_handle(skb, devlink);
4281 if (err)
4282 goto nla_put_failure;
4283
4284 err = nla_put_string(skb, DEVLINK_ATTR_REGION_NAME, region_name);
4285 if (err)
4286 goto nla_put_failure;
4287
ae0be8de 4288 chunks_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_REGION_CHUNKS);
fdd41ec2
PP		 4289 if (!chunks_attr) {
4290 err = -EMSGSIZE;
4e54795a 4291 goto nla_put_failure;
fdd41ec2 4292 }
4e54795a
AV		 4293
4294 if (attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR] &&
4295 attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]) {
4296 if (!start_offset)
4297 start_offset =
4298 nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
4299
4300 end_offset = nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
4301 end_offset += nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]);
4302 dump = false;
4303 }
4304
4305 err = devlink_nl_region_read_snapshot_fill(skb, devlink,
4306 region, attrs,
4307 start_offset,
4308 end_offset, dump,
4309 &ret_offset);
4310
4311 if (err && err != -EMSGSIZE)
4312 goto nla_put_failure;
4313
4314 /* Check if there was any progress done to prevent infinite loop */
fdd41ec2
PP		 4315 if (ret_offset == start_offset) {
4316 err = -EINVAL;
4e54795a 4317 goto nla_put_failure;
fdd41ec2 4318 }
4e54795a
AV		 4319
4320 *((u64 *)&cb->args[0]) = ret_offset;
4321
4322 nla_nest_end(skb, chunks_attr);
4323 genlmsg_end(skb, hdr);
4324 mutex_unlock(&devlink->lock);
4325 mutex_unlock(&devlink_mutex);
4326
4327 return skb->len;
4328
4329nla_put_failure:
4330 genlmsg_cancel(skb, hdr);
4331out_unlock:
4332 mutex_unlock(&devlink->lock);
dac7c08f 4333out_dev:
4e54795a 4334 mutex_unlock(&devlink_mutex);
fdd41ec2 4335 return err;
4e54795a
AV		 4336}
4337
f9cf2288
JK		 4338struct devlink_info_req {
4339 struct sk_buff *msg;
4340};
4341
4342int devlink_info_driver_name_put(struct devlink_info_req *req, const char *name)
4343{
4344 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_DRIVER_NAME, name);
4345}
4346EXPORT_SYMBOL_GPL(devlink_info_driver_name_put);
4347
4348int devlink_info_serial_number_put(struct devlink_info_req *req, const char *sn)
4349{
4350 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_SERIAL_NUMBER, sn);
4351}
4352EXPORT_SYMBOL_GPL(devlink_info_serial_number_put);
4353
fc6fae7d
JK		 4354static int devlink_info_version_put(struct devlink_info_req *req, int attr,
4355 const char *version_name,
4356 const char *version_value)
4357{
4358 struct nlattr *nest;
4359 int err;
4360
ae0be8de 4361 nest = nla_nest_start_noflag(req->msg, attr);
fc6fae7d
JK		 4362 if (!nest)
4363 return -EMSGSIZE;
4364
4365 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_NAME,
4366 version_name);
4367 if (err)
4368 goto nla_put_failure;
4369
4370 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_VALUE,
4371 version_value);
4372 if (err)
4373 goto nla_put_failure;
4374
4375 nla_nest_end(req->msg, nest);
4376
4377 return 0;
4378
4379nla_put_failure:
4380 nla_nest_cancel(req->msg, nest);
4381 return err;
4382}
4383
4384int devlink_info_version_fixed_put(struct devlink_info_req *req,
4385 const char *version_name,
4386 const char *version_value)
4387{
4388 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_FIXED,
4389 version_name, version_value);
4390}
4391EXPORT_SYMBOL_GPL(devlink_info_version_fixed_put);
4392
4393int devlink_info_version_stored_put(struct devlink_info_req *req,
4394 const char *version_name,
4395 const char *version_value)
4396{
4397 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_STORED,
4398 version_name, version_value);
4399}
4400EXPORT_SYMBOL_GPL(devlink_info_version_stored_put);
4401
4402int devlink_info_version_running_put(struct devlink_info_req *req,
4403 const char *version_name,
4404 const char *version_value)
4405{
4406 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_RUNNING,
4407 version_name, version_value);
4408}
4409EXPORT_SYMBOL_GPL(devlink_info_version_running_put);
4410
f9cf2288
JK		 4411static int
4412devlink_nl_info_fill(struct sk_buff *msg, struct devlink *devlink,
4413 enum devlink_command cmd, u32 portid,
4414 u32 seq, int flags, struct netlink_ext_ack *extack)
4415{
4416 struct devlink_info_req req;
4417 void *hdr;
4418 int err;
4419
4420 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
4421 if (!hdr)
4422 return -EMSGSIZE;
4423
4424 err = -EMSGSIZE;
4425 if (devlink_nl_put_handle(msg, devlink))
4426 goto err_cancel_msg;
4427
4428 req.msg = msg;
4429 err = devlink->ops->info_get(devlink, &req, extack);
4430 if (err)
4431 goto err_cancel_msg;
4432
4433 genlmsg_end(msg, hdr);
4434 return 0;
4435
4436err_cancel_msg:
4437 genlmsg_cancel(msg, hdr);
4438 return err;
4439}
4440
4441static int devlink_nl_cmd_info_get_doit(struct sk_buff *skb,
4442 struct genl_info *info)
4443{
4444 struct devlink *devlink = info->user_ptr[0];
4445 struct sk_buff *msg;
4446 int err;
4447
be6fe1d8 4448 if (!devlink->ops->info_get)
f9cf2288
JK		 4449 return -EOPNOTSUPP;
4450
4451 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4452 if (!msg)
4453 return -ENOMEM;
4454
4455 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
4456 info->snd_portid, info->snd_seq, 0,
4457 info->extack);
4458 if (err) {
4459 nlmsg_free(msg);
4460 return err;
4461 }
4462
4463 return genlmsg_reply(msg, info);
4464}
4465
4466static int devlink_nl_cmd_info_get_dumpit(struct sk_buff *msg,
4467 struct netlink_callback *cb)
4468{
4469 struct devlink *devlink;
4470 int start = cb->args[0];
4471 int idx = 0;
c62c2cfb 4472 int err = 0;
f9cf2288
JK		 4473
4474 mutex_lock(&devlink_mutex);
4475 list_for_each_entry(devlink, &devlink_list, list) {
4476 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
4477 continue;
4478 if (idx < start) {
4479 idx++;
4480 continue;
4481 }
4482
c493b09b
JP		 4483 if (!devlink->ops->info_get) {
4484 idx++;
4485 continue;
4486 }
4487
f9cf2288
JK		 4488 mutex_lock(&devlink->lock);
4489 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
4490 NETLINK_CB(cb->skb).portid,
4491 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4492 cb->extack);
4493 mutex_unlock(&devlink->lock);
93c2fcb0 4494 if (err && err != -EOPNOTSUPP)
f9cf2288
JK		 4495 break;
4496 idx++;
4497 }
4498 mutex_unlock(&devlink_mutex);
4499
c62c2cfb
JP		 4500 if (err != -EMSGSIZE)
4501 return err;
4502
f9cf2288
JK		 4503 cb->args[0] = idx;
4504 return msg->len;
4505}
4506
1db64e87
EBE		 4507struct devlink_fmsg_item {
4508 struct list_head list;
4509 int attrtype;
4510 u8 nla_type;
4511 u16 len;
d2afb41a 4512 int value[];
1db64e87
EBE		 4513};
4514
4515struct devlink_fmsg {
4516 struct list_head item_list;
573ed90a
AL		 4517 bool putting_binary; /* This flag forces enclosing of binary data
4518 * in an array brackets. It forces using
4519 * of designated API:
4520 * devlink_fmsg_binary_pair_nest_start()
4521 * devlink_fmsg_binary_pair_nest_end()
4522 */
1db64e87
EBE		 4523};
4524
4525static struct devlink_fmsg *devlink_fmsg_alloc(void)
4526{
4527 struct devlink_fmsg *fmsg;
4528
4529 fmsg = kzalloc(sizeof(*fmsg), GFP_KERNEL);
4530 if (!fmsg)
4531 return NULL;
4532
4533 INIT_LIST_HEAD(&fmsg->item_list);
4534
4535 return fmsg;
4536}
4537
4538static void devlink_fmsg_free(struct devlink_fmsg *fmsg)
4539{
4540 struct devlink_fmsg_item *item, *tmp;
4541
4542 list_for_each_entry_safe(item, tmp, &fmsg->item_list, list) {
4543 list_del(&item->list);
4544 kfree(item);
4545 }
4546 kfree(fmsg);
4547}
4548
4549static int devlink_fmsg_nest_common(struct devlink_fmsg *fmsg,
4550 int attrtype)
4551{
4552 struct devlink_fmsg_item *item;
4553
4554 item = kzalloc(sizeof(*item), GFP_KERNEL);
4555 if (!item)
4556 return -ENOMEM;
4557
4558 item->attrtype = attrtype;
4559 list_add_tail(&item->list, &fmsg->item_list);
4560
4561 return 0;
4562}
4563
4564int devlink_fmsg_obj_nest_start(struct devlink_fmsg *fmsg)
4565{
573ed90a
AL		 4566 if (fmsg->putting_binary)
4567 return -EINVAL;
4568
1db64e87
EBE		 4569 return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_OBJ_NEST_START);
4570}
4571EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_start);
4572
4573static int devlink_fmsg_nest_end(struct devlink_fmsg *fmsg)
4574{
573ed90a
AL		 4575 if (fmsg->putting_binary)
4576 return -EINVAL;
4577
1db64e87
EBE		 4578 return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_NEST_END);
4579}
4580
4581int devlink_fmsg_obj_nest_end(struct devlink_fmsg *fmsg)
4582{
573ed90a
AL		 4583 if (fmsg->putting_binary)
4584 return -EINVAL;
4585
1db64e87
EBE		 4586 return devlink_fmsg_nest_end(fmsg);
4587}
4588EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_end);
4589
4590#define DEVLINK_FMSG_MAX_SIZE (GENLMSG_DEFAULT_SIZE - GENL_HDRLEN - NLA_HDRLEN)
4591
4592static int devlink_fmsg_put_name(struct devlink_fmsg *fmsg, const char *name)
4593{
4594 struct devlink_fmsg_item *item;
4595
573ed90a
AL		 4596 if (fmsg->putting_binary)
4597 return -EINVAL;
4598
1db64e87
EBE		 4599 if (strlen(name) + 1 > DEVLINK_FMSG_MAX_SIZE)
4600 return -EMSGSIZE;
4601
4602 item = kzalloc(sizeof(*item) + strlen(name) + 1, GFP_KERNEL);
4603 if (!item)
4604 return -ENOMEM;
4605
4606 item->nla_type = NLA_NUL_STRING;
4607 item->len = strlen(name) + 1;
4608 item->attrtype = DEVLINK_ATTR_FMSG_OBJ_NAME;
4609 memcpy(&item->value, name, item->len);
4610 list_add_tail(&item->list, &fmsg->item_list);
4611
4612 return 0;
4613}
4614
4615int devlink_fmsg_pair_nest_start(struct devlink_fmsg *fmsg, const char *name)
4616{
4617 int err;
4618
573ed90a
AL		 4619 if (fmsg->putting_binary)
4620 return -EINVAL;
4621
1db64e87
EBE		 4622 err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_PAIR_NEST_START);
4623 if (err)
4624 return err;
4625
4626 err = devlink_fmsg_put_name(fmsg, name);
4627 if (err)
4628 return err;
4629
4630 return 0;
4631}
4632EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_start);
4633
4634int devlink_fmsg_pair_nest_end(struct devlink_fmsg *fmsg)
4635{
573ed90a
AL		 4636 if (fmsg->putting_binary)
4637 return -EINVAL;
4638
1db64e87
EBE		 4639 return devlink_fmsg_nest_end(fmsg);
4640}
4641EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_end);
4642
4643int devlink_fmsg_arr_pair_nest_start(struct devlink_fmsg *fmsg,
4644 const char *name)
4645{
4646 int err;
4647
573ed90a
AL		 4648 if (fmsg->putting_binary)
4649 return -EINVAL;
4650
1db64e87
EBE		 4651 err = devlink_fmsg_pair_nest_start(fmsg, name);
4652 if (err)
4653 return err;
4654
4655 err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_ARR_NEST_START);
4656 if (err)
4657 return err;
4658
4659 return 0;
4660}
4661EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_start);
4662
4663int devlink_fmsg_arr_pair_nest_end(struct devlink_fmsg *fmsg)
4664{
4665 int err;
4666
573ed90a
AL		 4667 if (fmsg->putting_binary)
4668 return -EINVAL;
4669
1db64e87
EBE		 4670 err = devlink_fmsg_nest_end(fmsg);
4671 if (err)
4672 return err;
4673
4674 err = devlink_fmsg_nest_end(fmsg);
4675 if (err)
4676 return err;
4677
4678 return 0;
4679}
4680EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_end);
4681
573ed90a
AL		 4682int devlink_fmsg_binary_pair_nest_start(struct devlink_fmsg *fmsg,
4683 const char *name)
4684{
4685 int err;
4686
4687 err = devlink_fmsg_arr_pair_nest_start(fmsg, name);
4688 if (err)
4689 return err;
4690
4691 fmsg->putting_binary = true;
4692 return err;
4693}
4694EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_start);
4695
4696int devlink_fmsg_binary_pair_nest_end(struct devlink_fmsg *fmsg)
4697{
4698 if (!fmsg->putting_binary)
4699 return -EINVAL;
4700
4701 fmsg->putting_binary = false;
4702 return devlink_fmsg_arr_pair_nest_end(fmsg);
4703}
4704EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_end);
4705
1db64e87
EBE		 4706static int devlink_fmsg_put_value(struct devlink_fmsg *fmsg,
4707 const void *value, u16 value_len,
4708 u8 value_nla_type)
4709{
4710 struct devlink_fmsg_item *item;
4711
4712 if (value_len > DEVLINK_FMSG_MAX_SIZE)
4713 return -EMSGSIZE;
4714
4715 item = kzalloc(sizeof(*item) + value_len, GFP_KERNEL);
4716 if (!item)
4717 return -ENOMEM;
4718
4719 item->nla_type = value_nla_type;
4720 item->len = value_len;
4721 item->attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
4722 memcpy(&item->value, value, item->len);
4723 list_add_tail(&item->list, &fmsg->item_list);
4724
4725 return 0;
4726}
4727
4728int devlink_fmsg_bool_put(struct devlink_fmsg *fmsg, bool value)
4729{
573ed90a
AL		 4730 if (fmsg->putting_binary)
4731 return -EINVAL;
4732
1db64e87
EBE		 4733 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_FLAG);
4734}
4735EXPORT_SYMBOL_GPL(devlink_fmsg_bool_put);
4736
4737int devlink_fmsg_u8_put(struct devlink_fmsg *fmsg, u8 value)
4738{
573ed90a
AL		 4739 if (fmsg->putting_binary)
4740 return -EINVAL;
4741
1db64e87
EBE		 4742 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U8);
4743}
4744EXPORT_SYMBOL_GPL(devlink_fmsg_u8_put);
4745
4746int devlink_fmsg_u32_put(struct devlink_fmsg *fmsg, u32 value)
4747{
573ed90a
AL		 4748 if (fmsg->putting_binary)
4749 return -EINVAL;
4750
1db64e87
EBE		 4751 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U32);
4752}
4753EXPORT_SYMBOL_GPL(devlink_fmsg_u32_put);
4754
4755int devlink_fmsg_u64_put(struct devlink_fmsg *fmsg, u64 value)
4756{
573ed90a
AL		 4757 if (fmsg->putting_binary)
4758 return -EINVAL;
4759
1db64e87
EBE		 4760 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U64);
4761}
4762EXPORT_SYMBOL_GPL(devlink_fmsg_u64_put);
4763
4764int devlink_fmsg_string_put(struct devlink_fmsg *fmsg, const char *value)
4765{
573ed90a
AL		 4766 if (fmsg->putting_binary)
4767 return -EINVAL;
4768
1db64e87
EBE		 4769 return devlink_fmsg_put_value(fmsg, value, strlen(value) + 1,
4770 NLA_NUL_STRING);
4771}
4772EXPORT_SYMBOL_GPL(devlink_fmsg_string_put);
4773
573ed90a
AL		 4774int devlink_fmsg_binary_put(struct devlink_fmsg *fmsg, const void *value,
4775 u16 value_len)
1db64e87 4776{
573ed90a
AL		 4777 if (!fmsg->putting_binary)
4778 return -EINVAL;
4779
1db64e87
EBE		 4780 return devlink_fmsg_put_value(fmsg, value, value_len, NLA_BINARY);
4781}
573ed90a 4782EXPORT_SYMBOL_GPL(devlink_fmsg_binary_put);
1db64e87
EBE		 4783
4784int devlink_fmsg_bool_pair_put(struct devlink_fmsg *fmsg, const char *name,
4785 bool value)
4786{
4787 int err;
4788
4789 err = devlink_fmsg_pair_nest_start(fmsg, name);
4790 if (err)
4791 return err;
4792
4793 err = devlink_fmsg_bool_put(fmsg, value);
4794 if (err)
4795 return err;
4796
4797 err = devlink_fmsg_pair_nest_end(fmsg);
4798 if (err)
4799 return err;
4800
4801 return 0;
4802}
4803EXPORT_SYMBOL_GPL(devlink_fmsg_bool_pair_put);
4804
4805int devlink_fmsg_u8_pair_put(struct devlink_fmsg *fmsg, const char *name,
4806 u8 value)
4807{
4808 int err;
4809
4810 err = devlink_fmsg_pair_nest_start(fmsg, name);
4811 if (err)
4812 return err;
4813
4814 err = devlink_fmsg_u8_put(fmsg, value);
4815 if (err)
4816 return err;
4817
4818 err = devlink_fmsg_pair_nest_end(fmsg);
4819 if (err)
4820 return err;
4821
4822 return 0;
4823}
4824EXPORT_SYMBOL_GPL(devlink_fmsg_u8_pair_put);
4825
4826int devlink_fmsg_u32_pair_put(struct devlink_fmsg *fmsg, const char *name,
4827 u32 value)
4828{
4829 int err;
4830
4831 err = devlink_fmsg_pair_nest_start(fmsg, name);
4832 if (err)
4833 return err;
4834
4835 err = devlink_fmsg_u32_put(fmsg, value);
4836 if (err)
4837 return err;
4838
4839 err = devlink_fmsg_pair_nest_end(fmsg);
4840 if (err)
4841 return err;
4842
4843 return 0;
4844}
4845EXPORT_SYMBOL_GPL(devlink_fmsg_u32_pair_put);
4846
4847int devlink_fmsg_u64_pair_put(struct devlink_fmsg *fmsg, const char *name,
4848 u64 value)
4849{
4850 int err;
4851
4852 err = devlink_fmsg_pair_nest_start(fmsg, name);
4853 if (err)
4854 return err;
4855
4856 err = devlink_fmsg_u64_put(fmsg, value);
4857 if (err)
4858 return err;
4859
4860 err = devlink_fmsg_pair_nest_end(fmsg);
4861 if (err)
4862 return err;
4863
4864 return 0;
4865}
4866EXPORT_SYMBOL_GPL(devlink_fmsg_u64_pair_put);
4867
4868int devlink_fmsg_string_pair_put(struct devlink_fmsg *fmsg, const char *name,
4869 const char *value)
4870{
4871 int err;
4872
4873 err = devlink_fmsg_pair_nest_start(fmsg, name);
4874 if (err)
4875 return err;
4876
4877 err = devlink_fmsg_string_put(fmsg, value);
4878 if (err)
4879 return err;
4880
4881 err = devlink_fmsg_pair_nest_end(fmsg);
4882 if (err)
4883 return err;
4884
4885 return 0;
4886}
4887EXPORT_SYMBOL_GPL(devlink_fmsg_string_pair_put);
4888
4889int devlink_fmsg_binary_pair_put(struct devlink_fmsg *fmsg, const char *name,
e2cde864 4890 const void *value, u32 value_len)
1db64e87 4891{
e2cde864 4892 u32 data_size;
573ed90a 4893 int end_err;
e2cde864 4894 u32 offset;
1db64e87
EBE		 4895 int err;
4896
573ed90a 4897 err = devlink_fmsg_binary_pair_nest_start(fmsg, name);
1db64e87
EBE		 4898 if (err)
4899 return err;
4900
e2cde864
AL		 4901 for (offset = 0; offset < value_len; offset += data_size) {
4902 data_size = value_len - offset;
4903 if (data_size > DEVLINK_FMSG_MAX_SIZE)
4904 data_size = DEVLINK_FMSG_MAX_SIZE;
4905 err = devlink_fmsg_binary_put(fmsg, value + offset, data_size);
4906 if (err)
573ed90a
AL		 4907 break;
4908 /* Exit from loop with a break (instead of
4909 * return) to make sure putting_binary is turned off in
4910 * devlink_fmsg_binary_pair_nest_end
4911 */
e2cde864 4912 }
1db64e87 4913
573ed90a
AL		 4914 end_err = devlink_fmsg_binary_pair_nest_end(fmsg);
4915 if (end_err)
4916 err = end_err;
1db64e87 4917
573ed90a 4918 return err;
1db64e87
EBE		 4919}
4920EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_put);
4921
4922static int
4923devlink_fmsg_item_fill_type(struct devlink_fmsg_item *msg, struct sk_buff *skb)
4924{
4925 switch (msg->nla_type) {
4926 case NLA_FLAG:
4927 case NLA_U8:
4928 case NLA_U32:
4929 case NLA_U64:
4930 case NLA_NUL_STRING:
4931 case NLA_BINARY:
4932 return nla_put_u8(skb, DEVLINK_ATTR_FMSG_OBJ_VALUE_TYPE,
4933 msg->nla_type);
4934 default:
4935 return -EINVAL;
4936 }
4937}
4938
4939static int
4940devlink_fmsg_item_fill_data(struct devlink_fmsg_item *msg, struct sk_buff *skb)
4941{
4942 int attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
4943 u8 tmp;
4944
4945 switch (msg->nla_type) {
4946 case NLA_FLAG:
4947 /* Always provide flag data, regardless of its value */
4948 tmp = *(bool *) msg->value;
4949
4950 return nla_put_u8(skb, attrtype, tmp);
4951 case NLA_U8:
4952 return nla_put_u8(skb, attrtype, *(u8 *) msg->value);
4953 case NLA_U32:
4954 return nla_put_u32(skb, attrtype, *(u32 *) msg->value);
4955 case NLA_U64:
4956 return nla_put_u64_64bit(skb, attrtype, *(u64 *) msg->value,
4957 DEVLINK_ATTR_PAD);
4958 case NLA_NUL_STRING:
4959 return nla_put_string(skb, attrtype, (char *) &msg->value);
4960 case NLA_BINARY:
4961 return nla_put(skb, attrtype, msg->len, (void *) &msg->value);
4962 default:
4963 return -EINVAL;
4964 }
4965}
4966
4967static int
4968devlink_fmsg_prepare_skb(struct devlink_fmsg *fmsg, struct sk_buff *skb,
4969 int *start)
4970{
4971 struct devlink_fmsg_item *item;
4972 struct nlattr *fmsg_nlattr;
4973 int i = 0;
4974 int err;
4975
ae0be8de 4976 fmsg_nlattr = nla_nest_start_noflag(skb, DEVLINK_ATTR_FMSG);
1db64e87
EBE		 4977 if (!fmsg_nlattr)
4978 return -EMSGSIZE;
4979
4980 list_for_each_entry(item, &fmsg->item_list, list) {
4981 if (i < *start) {
4982 i++;
4983 continue;
4984 }
4985
4986 switch (item->attrtype) {
4987 case DEVLINK_ATTR_FMSG_OBJ_NEST_START:
4988 case DEVLINK_ATTR_FMSG_PAIR_NEST_START:
4989 case DEVLINK_ATTR_FMSG_ARR_NEST_START:
4990 case DEVLINK_ATTR_FMSG_NEST_END:
4991 err = nla_put_flag(skb, item->attrtype);
4992 break;
4993 case DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA:
4994 err = devlink_fmsg_item_fill_type(item, skb);
4995 if (err)
4996 break;
4997 err = devlink_fmsg_item_fill_data(item, skb);
4998 break;
4999 case DEVLINK_ATTR_FMSG_OBJ_NAME:
5000 err = nla_put_string(skb, item->attrtype,
5001 (char *) &item->value);
5002 break;
5003 default:
5004 err = -EINVAL;
5005 break;
5006 }
5007 if (!err)
5008 *start = ++i;
5009 else
5010 break;
5011 }
5012
5013 nla_nest_end(skb, fmsg_nlattr);
5014 return err;
5015}
5016
5017static int devlink_fmsg_snd(struct devlink_fmsg *fmsg,
5018 struct genl_info *info,
5019 enum devlink_command cmd, int flags)
5020{
5021 struct nlmsghdr *nlh;
5022 struct sk_buff *skb;
5023 bool last = false;
5024 int index = 0;
5025 void *hdr;
5026 int err;
5027
5028 while (!last) {
5029 int tmp_index = index;
5030
5031 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
5032 if (!skb)
5033 return -ENOMEM;
5034
5035 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
5036 &devlink_nl_family, flags | NLM_F_MULTI, cmd);
5037 if (!hdr) {
5038 err = -EMSGSIZE;
5039 goto nla_put_failure;
5040 }
5041
5042 err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
5043 if (!err)
5044 last = true;
5045 else if (err != -EMSGSIZE || tmp_index == index)
5046 goto nla_put_failure;
5047
5048 genlmsg_end(skb, hdr);
5049 err = genlmsg_reply(skb, info);
5050 if (err)
5051 return err;
5052 }
5053
5054 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
5055 if (!skb)
5056 return -ENOMEM;
5057 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
5058 NLMSG_DONE, 0, flags | NLM_F_MULTI);
5059 if (!nlh) {
5060 err = -EMSGSIZE;
5061 goto nla_put_failure;
5062 }
1db64e87 5063
fde55ea7 5064 return genlmsg_reply(skb, info);
1db64e87
EBE		 5065
5066nla_put_failure:
5067 nlmsg_free(skb);
5068 return err;
5069}
5070
e44ef4e4
AL		 5071static int devlink_fmsg_dumpit(struct devlink_fmsg *fmsg, struct sk_buff *skb,
5072 struct netlink_callback *cb,
5073 enum devlink_command cmd)
5074{
5075 int index = cb->args[0];
5076 int tmp_index = index;
5077 void *hdr;
5078 int err;
5079
5080 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
5081 &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI, cmd);
5082 if (!hdr) {
5083 err = -EMSGSIZE;
5084 goto nla_put_failure;
5085 }
5086
5087 err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
5088 if ((err && err != -EMSGSIZE) || tmp_index == index)
5089 goto nla_put_failure;
5090
5091 cb->args[0] = index;
5092 genlmsg_end(skb, hdr);
5093 return skb->len;
5094
5095nla_put_failure:
5096 genlmsg_cancel(skb, hdr);
5097 return err;
5098}
5099
a0bdcc59
EBE		 5100struct devlink_health_reporter {
5101 struct list_head list;
5102 void *priv;
5103 const struct devlink_health_reporter_ops *ops;
5104 struct devlink *devlink;
c8e1da0b
EBE		 5105 struct devlink_fmsg *dump_fmsg;
5106 struct mutex dump_lock; /* lock parallel read/write from dump buffers */
a0bdcc59
EBE		 5107 u64 graceful_period;
5108 bool auto_recover;
48bb52c8 5109 bool auto_dump;
a0bdcc59 5110 u8 health_state;
c8e1da0b 5111 u64 dump_ts;
d279505b 5112 u64 dump_real_ts;
c8e1da0b
EBE		 5113 u64 error_count;
5114 u64 recovery_count;
5115 u64 last_recovery_ts;
b587bdaf 5116 refcount_t refcount;
c8e1da0b
EBE		 5117};
5118
a0bdcc59
EBE		 5119void *
5120devlink_health_reporter_priv(struct devlink_health_reporter *reporter)
5121{
5122 return reporter->priv;
5123}
5124EXPORT_SYMBOL_GPL(devlink_health_reporter_priv);
5125
5126static struct devlink_health_reporter *
5127devlink_health_reporter_find_by_name(struct devlink *devlink,
5128 const char *reporter_name)
5129{
5130 struct devlink_health_reporter *reporter;
5131
b587bdaf 5132 lockdep_assert_held(&devlink->reporters_lock);
a0bdcc59
EBE		 5133 list_for_each_entry(reporter, &devlink->reporter_list, list)
5134 if (!strcmp(reporter->ops->name, reporter_name))
5135 return reporter;
5136 return NULL;
5137}
5138
5139/**
5140 * devlink_health_reporter_create - create devlink health reporter
5141 *
5142 * @devlink: devlink
5143 * @ops: ops
5144 * @graceful_period: to avoid recovery loops, in msecs
a0bdcc59
EBE		 5145 * @priv: priv
5146 */
5147struct devlink_health_reporter *
5148devlink_health_reporter_create(struct devlink *devlink,
5149 const struct devlink_health_reporter_ops *ops,
ba7d16c7 5150 u64 graceful_period, void *priv)
a0bdcc59
EBE		 5151{
5152 struct devlink_health_reporter *reporter;
5153
b587bdaf 5154 mutex_lock(&devlink->reporters_lock);
a0bdcc59
EBE		 5155 if (devlink_health_reporter_find_by_name(devlink, ops->name)) {
5156 reporter = ERR_PTR(-EEXIST);
5157 goto unlock;
5158 }
5159
ba7d16c7 5160 if (WARN_ON(graceful_period && !ops->recover)) {
a0bdcc59
EBE		 5161 reporter = ERR_PTR(-EINVAL);
5162 goto unlock;
5163 }
5164
5165 reporter = kzalloc(sizeof(*reporter), GFP_KERNEL);
5166 if (!reporter) {
5167 reporter = ERR_PTR(-ENOMEM);
5168 goto unlock;
5169 }
5170
5171 reporter->priv = priv;
5172 reporter->ops = ops;
5173 reporter->devlink = devlink;
5174 reporter->graceful_period = graceful_period;
ba7d16c7 5175 reporter->auto_recover = !!ops->recover;
48bb52c8 5176 reporter->auto_dump = !!ops->dump;
c8e1da0b 5177 mutex_init(&reporter->dump_lock);
b587bdaf 5178 refcount_set(&reporter->refcount, 1);
a0bdcc59
EBE		 5179 list_add_tail(&reporter->list, &devlink->reporter_list);
5180unlock:
b587bdaf 5181 mutex_unlock(&devlink->reporters_lock);
a0bdcc59
EBE		 5182 return reporter;
5183}
5184EXPORT_SYMBOL_GPL(devlink_health_reporter_create);
5185
5186/**
5187 * devlink_health_reporter_destroy - destroy devlink health reporter
5188 *
5189 * @reporter: devlink health reporter to destroy
5190 */
5191void
5192devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
5193{
b587bdaf 5194 mutex_lock(&reporter->devlink->reporters_lock);
a0bdcc59 5195 list_del(&reporter->list);
b587bdaf
MS		 5196 mutex_unlock(&reporter->devlink->reporters_lock);
5197 while (refcount_read(&reporter->refcount) > 1)
5198 msleep(100);
375cf8c6 5199 mutex_destroy(&reporter->dump_lock);
c8e1da0b
EBE		 5200 if (reporter->dump_fmsg)
5201 devlink_fmsg_free(reporter->dump_fmsg);
a0bdcc59
EBE		 5202 kfree(reporter);
5203}
5204EXPORT_SYMBOL_GPL(devlink_health_reporter_destroy);
5205
6ec8b6cd
MS		 5206static int
5207devlink_nl_health_reporter_fill(struct sk_buff *msg,
5208 struct devlink *devlink,
5209 struct devlink_health_reporter *reporter,
5210 enum devlink_command cmd, u32 portid,
5211 u32 seq, int flags)
5212{
5213 struct nlattr *reporter_attr;
5214 void *hdr;
5215
5216 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
5217 if (!hdr)
5218 return -EMSGSIZE;
5219
5220 if (devlink_nl_put_handle(msg, devlink))
5221 goto genlmsg_cancel;
5222
5223 reporter_attr = nla_nest_start_noflag(msg,
5224 DEVLINK_ATTR_HEALTH_REPORTER);
5225 if (!reporter_attr)
5226 goto genlmsg_cancel;
5227 if (nla_put_string(msg, DEVLINK_ATTR_HEALTH_REPORTER_NAME,
5228 reporter->ops->name))
5229 goto reporter_nest_cancel;
5230 if (nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_STATE,
5231 reporter->health_state))
5232 goto reporter_nest_cancel;
5233 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_ERR_COUNT,
5234 reporter->error_count, DEVLINK_ATTR_PAD))
5235 goto reporter_nest_cancel;
5236 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_RECOVER_COUNT,
5237 reporter->recovery_count, DEVLINK_ATTR_PAD))
5238 goto reporter_nest_cancel;
5239 if (reporter->ops->recover &&
5240 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD,
5241 reporter->graceful_period,
5242 DEVLINK_ATTR_PAD))
5243 goto reporter_nest_cancel;
5244 if (reporter->ops->recover &&
5245 nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER,
5246 reporter->auto_recover))
5247 goto reporter_nest_cancel;
5248 if (reporter->dump_fmsg &&
5249 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS,
5250 jiffies_to_msecs(reporter->dump_ts),
5251 DEVLINK_ATTR_PAD))
5252 goto reporter_nest_cancel;
5253 if (reporter->dump_fmsg &&
5254 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS_NS,
5255 reporter->dump_real_ts, DEVLINK_ATTR_PAD))
5256 goto reporter_nest_cancel;
48bb52c8
EBE		 5257 if (reporter->ops->dump &&
5258 nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP,
5259 reporter->auto_dump))
5260 goto reporter_nest_cancel;
6ec8b6cd
MS		 5261
5262 nla_nest_end(msg, reporter_attr);
5263 genlmsg_end(msg, hdr);
5264 return 0;
5265
5266reporter_nest_cancel:
5267 nla_nest_end(msg, reporter_attr);
5268genlmsg_cancel:
5269 genlmsg_cancel(msg, hdr);
5270 return -EMSGSIZE;
5271}
5272
5273static void devlink_recover_notify(struct devlink_health_reporter *reporter,
5274 enum devlink_command cmd)
5275{
5276 struct sk_buff *msg;
5277 int err;
5278
5279 WARN_ON(cmd != DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
5280
5281 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5282 if (!msg)
5283 return;
5284
5285 err = devlink_nl_health_reporter_fill(msg, reporter->devlink,
5286 reporter, cmd, 0, 0, 0);
5287 if (err) {
5288 nlmsg_free(msg);
5289 return;
5290 }
5291
5292 genlmsg_multicast_netns(&devlink_nl_family,
5293 devlink_net(reporter->devlink),
5294 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
5295}
5296
6181e5cb
VG		 5297void
5298devlink_health_reporter_recovery_done(struct devlink_health_reporter *reporter)
5299{
5300 reporter->recovery_count++;
5301 reporter->last_recovery_ts = jiffies;
5302}
5303EXPORT_SYMBOL_GPL(devlink_health_reporter_recovery_done);
5304
c8e1da0b
EBE		 5305static int
5306devlink_health_reporter_recover(struct devlink_health_reporter *reporter,
e7a98105 5307 void *priv_ctx, struct netlink_ext_ack *extack)
c8e1da0b
EBE		 5308{
5309 int err;
5310
40281820
JP		 5311 if (reporter->health_state == DEVLINK_HEALTH_REPORTER_STATE_HEALTHY)
5312 return 0;
5313
c8e1da0b
EBE		 5314 if (!reporter->ops->recover)
5315 return -EOPNOTSUPP;
5316
e7a98105 5317 err = reporter->ops->recover(reporter, priv_ctx, extack);
c8e1da0b
EBE		 5318 if (err)
5319 return err;
5320
6181e5cb 5321 devlink_health_reporter_recovery_done(reporter);
c8e1da0b 5322 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_HEALTHY;
6ec8b6cd 5323 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
c8e1da0b
EBE		 5324
5325 return 0;
5326}
5327
5328static void
5329devlink_health_dump_clear(struct devlink_health_reporter *reporter)
5330{
5331 if (!reporter->dump_fmsg)
5332 return;
5333 devlink_fmsg_free(reporter->dump_fmsg);
5334 reporter->dump_fmsg = NULL;
5335}
5336
5337static int devlink_health_do_dump(struct devlink_health_reporter *reporter,
e7a98105
JP		 5338 void *priv_ctx,
5339 struct netlink_ext_ack *extack)
c8e1da0b
EBE		 5340{
5341 int err;
5342
5343 if (!reporter->ops->dump)
5344 return 0;
5345
5346 if (reporter->dump_fmsg)
5347 return 0;
5348
5349 reporter->dump_fmsg = devlink_fmsg_alloc();
5350 if (!reporter->dump_fmsg) {
5351 err = -ENOMEM;
5352 return err;
5353 }
5354
5355 err = devlink_fmsg_obj_nest_start(reporter->dump_fmsg);
5356 if (err)
5357 goto dump_err;
5358
5359 err = reporter->ops->dump(reporter, reporter->dump_fmsg,
e7a98105 5360 priv_ctx, extack);
c8e1da0b
EBE		 5361 if (err)
5362 goto dump_err;
5363
5364 err = devlink_fmsg_obj_nest_end(reporter->dump_fmsg);
5365 if (err)
5366 goto dump_err;
5367
5368 reporter->dump_ts = jiffies;
d279505b 5369 reporter->dump_real_ts = ktime_get_real_ns();
c8e1da0b
EBE		 5370
5371 return 0;
5372
5373dump_err:
5374 devlink_health_dump_clear(reporter);
5375 return err;
5376}
5377
5378int devlink_health_report(struct devlink_health_reporter *reporter,
5379 const char *msg, void *priv_ctx)
5380{
a0a21adb 5381 enum devlink_health_reporter_state prev_health_state;
c8e1da0b
EBE		 5382 struct devlink *devlink = reporter->devlink;
5383
5384 /* write a log message of the current error */
5385 WARN_ON(!msg);
5386 trace_devlink_health_report(devlink, reporter->ops->name, msg);
5387 reporter->error_count++;
a0a21adb
EBE		 5388 prev_health_state = reporter->health_state;
5389 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
6ec8b6cd 5390 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
c8e1da0b
EBE		 5391
5392 /* abort if the previous error wasn't recovered */
5393 if (reporter->auto_recover &&
a0a21adb 5394 (prev_health_state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY ||
c8e1da0b
EBE		 5395 jiffies - reporter->last_recovery_ts <
5396 msecs_to_jiffies(reporter->graceful_period))) {
5397 trace_devlink_health_recover_aborted(devlink,
5398 reporter->ops->name,
5399 reporter->health_state,
5400 jiffies -
5401 reporter->last_recovery_ts);
5402 return -ECANCELED;
5403 }
5404
5405 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
5406
48bb52c8
EBE		 5407 if (reporter->auto_dump) {
5408 mutex_lock(&reporter->dump_lock);
5409 /* store current dump of current error, for later analysis */
5410 devlink_health_do_dump(reporter, priv_ctx, NULL);
5411 mutex_unlock(&reporter->dump_lock);
5412 }
c8e1da0b
EBE		 5413
5414 if (reporter->auto_recover)
e7a98105
JP		 5415 return devlink_health_reporter_recover(reporter,
5416 priv_ctx, NULL);
c8e1da0b
EBE		 5417
5418 return 0;
5419}
5420EXPORT_SYMBOL_GPL(devlink_health_report);
5421
7afe335a 5422static struct devlink_health_reporter *
e44ef4e4
AL		 5423devlink_health_reporter_get_from_attrs(struct devlink *devlink,
5424 struct nlattr **attrs)
7afe335a 5425{
b587bdaf 5426 struct devlink_health_reporter *reporter;
7afe335a
EBE		 5427 char *reporter_name;
5428
e44ef4e4 5429 if (!attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME])
7afe335a
EBE		 5430 return NULL;
5431
e44ef4e4 5432 reporter_name = nla_data(attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME]);
b587bdaf
MS		 5433 mutex_lock(&devlink->reporters_lock);
5434 reporter = devlink_health_reporter_find_by_name(devlink, reporter_name);
5435 if (reporter)
5436 refcount_inc(&reporter->refcount);
5437 mutex_unlock(&devlink->reporters_lock);
5438 return reporter;
5439}
5440
e44ef4e4
AL		 5441static struct devlink_health_reporter *
5442devlink_health_reporter_get_from_info(struct devlink *devlink,
5443 struct genl_info *info)
5444{
5445 return devlink_health_reporter_get_from_attrs(devlink, info->attrs);
5446}
5447
5448static struct devlink_health_reporter *
5449devlink_health_reporter_get_from_cb(struct netlink_callback *cb)
5450{
ee85da53 5451 const struct genl_dumpit_info *info = genl_dumpit_info(cb);
e44ef4e4 5452 struct devlink_health_reporter *reporter;
ee85da53 5453 struct nlattr **attrs = info->attrs;
e44ef4e4 5454 struct devlink *devlink;
e44ef4e4
AL		 5455
5456 mutex_lock(&devlink_mutex);
5457 devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
5458 if (IS_ERR(devlink))
5459 goto unlock;
5460
5461 reporter = devlink_health_reporter_get_from_attrs(devlink, attrs);
5462 mutex_unlock(&devlink_mutex);
e44ef4e4
AL		 5463 return reporter;
5464unlock:
5465 mutex_unlock(&devlink_mutex);
e44ef4e4
AL		 5466 return NULL;
5467}
5468
b587bdaf
MS		 5469static void
5470devlink_health_reporter_put(struct devlink_health_reporter *reporter)
5471{
5472 refcount_dec(&reporter->refcount);
7afe335a
EBE		 5473}
5474
97ff3bd3
VG		 5475void
5476devlink_health_reporter_state_update(struct devlink_health_reporter *reporter,
5477 enum devlink_health_reporter_state state)
5478{
5479 if (WARN_ON(state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY &&
5480 state != DEVLINK_HEALTH_REPORTER_STATE_ERROR))
5481 return;
5482
5483 if (reporter->health_state == state)
5484 return;
5485
5486 reporter->health_state = state;
5487 trace_devlink_health_reporter_state_update(reporter->devlink,
5488 reporter->ops->name, state);
5489 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
5490}
5491EXPORT_SYMBOL_GPL(devlink_health_reporter_state_update);
5492
7afe335a
EBE		 5493static int devlink_nl_cmd_health_reporter_get_doit(struct sk_buff *skb,
5494 struct genl_info *info)
5495{
5496 struct devlink *devlink = info->user_ptr[0];
5497 struct devlink_health_reporter *reporter;
5498 struct sk_buff *msg;
5499 int err;
5500
5501 reporter = devlink_health_reporter_get_from_info(devlink, info);
5502 if (!reporter)
5503 return -EINVAL;
5504
5505 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
b587bdaf
MS		 5506 if (!msg) {
5507 err = -ENOMEM;
5508 goto out;
5509 }
7afe335a
EBE		 5510
5511 err = devlink_nl_health_reporter_fill(msg, devlink, reporter,
5512 DEVLINK_CMD_HEALTH_REPORTER_GET,
5513 info->snd_portid, info->snd_seq,
5514 0);
5515 if (err) {
5516 nlmsg_free(msg);
b587bdaf 5517 goto out;
7afe335a
EBE		 5518 }
5519
b587bdaf
MS		 5520 err = genlmsg_reply(msg, info);
5521out:
5522 devlink_health_reporter_put(reporter);
5523 return err;
7afe335a
EBE		 5524}
5525
5526static int
5527devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg,
5528 struct netlink_callback *cb)
5529{
5530 struct devlink_health_reporter *reporter;
5531 struct devlink *devlink;
5532 int start = cb->args[0];
5533 int idx = 0;
5534 int err;
5535
5536 mutex_lock(&devlink_mutex);
5537 list_for_each_entry(devlink, &devlink_list, list) {
5538 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
5539 continue;
b587bdaf 5540 mutex_lock(&devlink->reporters_lock);
7afe335a
EBE		 5541 list_for_each_entry(reporter, &devlink->reporter_list,
5542 list) {
5543 if (idx < start) {
5544 idx++;
5545 continue;
5546 }
5547 err = devlink_nl_health_reporter_fill(msg, devlink,
5548 reporter,
5549 DEVLINK_CMD_HEALTH_REPORTER_GET,
5550 NETLINK_CB(cb->skb).portid,
5551 cb->nlh->nlmsg_seq,
5552 NLM_F_MULTI);
5553 if (err) {
b587bdaf 5554 mutex_unlock(&devlink->reporters_lock);
7afe335a
EBE		 5555 goto out;
5556 }
5557 idx++;
5558 }
b587bdaf 5559 mutex_unlock(&devlink->reporters_lock);
7afe335a
EBE		 5560 }
5561out:
5562 mutex_unlock(&devlink_mutex);
5563
5564 cb->args[0] = idx;
5565 return msg->len;
5566}
5567
a1e55ec0
EBE		 5568static int
5569devlink_nl_cmd_health_reporter_set_doit(struct sk_buff *skb,
5570 struct genl_info *info)
5571{
5572 struct devlink *devlink = info->user_ptr[0];
5573 struct devlink_health_reporter *reporter;
b587bdaf 5574 int err;
a1e55ec0
EBE		 5575
5576 reporter = devlink_health_reporter_get_from_info(devlink, info);
5577 if (!reporter)
5578 return -EINVAL;
5579
5580 if (!reporter->ops->recover &&
5581 (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] ||
b587bdaf
MS		 5582 info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])) {
5583 err = -EOPNOTSUPP;
5584 goto out;
5585 }
48bb52c8
EBE		 5586 if (!reporter->ops->dump &&
5587 info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]) {
5588 err = -EOPNOTSUPP;
5589 goto out;
5590 }
a1e55ec0
EBE		 5591
5592 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD])
5593 reporter->graceful_period =
5594 nla_get_u64(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD]);
5595
5596 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])
5597 reporter->auto_recover =
5598 nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER]);
5599
48bb52c8
EBE		 5600 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP])
5601 reporter->auto_dump =
5602 nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]);
5603
b587bdaf 5604 devlink_health_reporter_put(reporter);
a1e55ec0 5605 return 0;
b587bdaf
MS		 5606out:
5607 devlink_health_reporter_put(reporter);
5608 return err;
a1e55ec0
EBE		 5609}
5610
20a0943a
EBE		 5611static int devlink_nl_cmd_health_reporter_recover_doit(struct sk_buff *skb,
5612 struct genl_info *info)
5613{
5614 struct devlink *devlink = info->user_ptr[0];
5615 struct devlink_health_reporter *reporter;
b587bdaf 5616 int err;
20a0943a
EBE		 5617
5618 reporter = devlink_health_reporter_get_from_info(devlink, info);
5619 if (!reporter)
5620 return -EINVAL;
5621
e7a98105 5622 err = devlink_health_reporter_recover(reporter, NULL, info->extack);
b587bdaf
MS		 5623
5624 devlink_health_reporter_put(reporter);
5625 return err;
20a0943a
EBE		 5626}
5627
fca42a27
EBE		 5628static int devlink_nl_cmd_health_reporter_diagnose_doit(struct sk_buff *skb,
5629 struct genl_info *info)
5630{
5631 struct devlink *devlink = info->user_ptr[0];
5632 struct devlink_health_reporter *reporter;
5633 struct devlink_fmsg *fmsg;
5634 int err;
5635
5636 reporter = devlink_health_reporter_get_from_info(devlink, info);
5637 if (!reporter)
5638 return -EINVAL;
5639
b587bdaf
MS		 5640 if (!reporter->ops->diagnose) {
5641 devlink_health_reporter_put(reporter);
fca42a27 5642 return -EOPNOTSUPP;
b587bdaf 5643 }
fca42a27
EBE		 5644
5645 fmsg = devlink_fmsg_alloc();
b587bdaf
MS		 5646 if (!fmsg) {
5647 devlink_health_reporter_put(reporter);
fca42a27 5648 return -ENOMEM;
b587bdaf 5649 }
fca42a27
EBE		 5650
5651 err = devlink_fmsg_obj_nest_start(fmsg);
5652 if (err)
5653 goto out;
5654
e7a98105 5655 err = reporter->ops->diagnose(reporter, fmsg, info->extack);
fca42a27
EBE		 5656 if (err)
5657 goto out;
5658
5659 err = devlink_fmsg_obj_nest_end(fmsg);
5660 if (err)
5661 goto out;
5662
5663 err = devlink_fmsg_snd(fmsg, info,
5664 DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE, 0);
5665
5666out:
5667 devlink_fmsg_free(fmsg);
b587bdaf 5668 devlink_health_reporter_put(reporter);
fca42a27
EBE		 5669 return err;
5670}
5671
e44ef4e4
AL		 5672static int
5673devlink_nl_cmd_health_reporter_dump_get_dumpit(struct sk_buff *skb,
5674 struct netlink_callback *cb)
35455e23 5675{
35455e23 5676 struct devlink_health_reporter *reporter;
e44ef4e4 5677 u64 start = cb->args[0];
35455e23
EBE		 5678 int err;
5679
e44ef4e4 5680 reporter = devlink_health_reporter_get_from_cb(cb);
35455e23
EBE		 5681 if (!reporter)
5682 return -EINVAL;
5683
b587bdaf 5684 if (!reporter->ops->dump) {
e44ef4e4
AL		 5685 err = -EOPNOTSUPP;
5686 goto out;
b587bdaf 5687 }
35455e23 5688 mutex_lock(&reporter->dump_lock);
e44ef4e4 5689 if (!start) {
e7a98105 5690 err = devlink_health_do_dump(reporter, NULL, cb->extack);
e44ef4e4
AL		 5691 if (err)
5692 goto unlock;
5693 cb->args[1] = reporter->dump_ts;
5694 }
5695 if (!reporter->dump_fmsg || cb->args[1] != reporter->dump_ts) {
5696 NL_SET_ERR_MSG_MOD(cb->extack, "Dump trampled, please retry");
5697 err = -EAGAIN;
5698 goto unlock;
5699 }
35455e23 5700
e44ef4e4
AL		 5701 err = devlink_fmsg_dumpit(reporter->dump_fmsg, skb, cb,
5702 DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET);
5703unlock:
35455e23 5704 mutex_unlock(&reporter->dump_lock);
e44ef4e4 5705out:
b587bdaf 5706 devlink_health_reporter_put(reporter);
35455e23
EBE		 5707 return err;
5708}
5709
5710static int
5711devlink_nl_cmd_health_reporter_dump_clear_doit(struct sk_buff *skb,
5712 struct genl_info *info)
5713{
5714 struct devlink *devlink = info->user_ptr[0];
5715 struct devlink_health_reporter *reporter;
5716
5717 reporter = devlink_health_reporter_get_from_info(devlink, info);
5718 if (!reporter)
5719 return -EINVAL;
5720
b587bdaf
MS		 5721 if (!reporter->ops->dump) {
5722 devlink_health_reporter_put(reporter);
35455e23 5723 return -EOPNOTSUPP;
b587bdaf 5724 }
35455e23
EBE		 5725
5726 mutex_lock(&reporter->dump_lock);
5727 devlink_health_dump_clear(reporter);
5728 mutex_unlock(&reporter->dump_lock);
b587bdaf 5729 devlink_health_reporter_put(reporter);
35455e23
EBE		 5730 return 0;
5731}
5732
0f420b6c
IS		 5733struct devlink_stats {
5734 u64 rx_bytes;
5735 u64 rx_packets;
5736 struct u64_stats_sync syncp;
5737};
5738
1e8c6619
IS		 5739/**
5740 * struct devlink_trap_policer_item - Packet trap policer attributes.
5741 * @policer: Immutable packet trap policer attributes.
5742 * @rate: Rate in packets / sec.
5743 * @burst: Burst size in packets.
5744 * @list: trap_policer_list member.
5745 *
5746 * Describes packet trap policer attributes. Created by devlink during trap
5747 * policer registration.
5748 */
5749struct devlink_trap_policer_item {
5750 const struct devlink_trap_policer *policer;
5751 u64 rate;
5752 u64 burst;
5753 struct list_head list;
5754};
5755
0f420b6c
IS		 5756/**
5757 * struct devlink_trap_group_item - Packet trap group attributes.
5758 * @group: Immutable packet trap group attributes.
f9f54392 5759 * @policer_item: Associated policer item. Can be NULL.
0f420b6c
IS		 5760 * @list: trap_group_list member.
5761 * @stats: Trap group statistics.
5762 *
5763 * Describes packet trap group attributes. Created by devlink during trap
a09b37fc 5764 * group registration.
0f420b6c
IS		 5765 */
5766struct devlink_trap_group_item {
5767 const struct devlink_trap_group *group;
f9f54392 5768 struct devlink_trap_policer_item *policer_item;
0f420b6c
IS		 5769 struct list_head list;
5770 struct devlink_stats __percpu *stats;
5771};
5772
5773/**
5774 * struct devlink_trap_item - Packet trap attributes.
5775 * @trap: Immutable packet trap attributes.
5776 * @group_item: Associated group item.
5777 * @list: trap_list member.
5778 * @action: Trap action.
5779 * @stats: Trap statistics.
5780 * @priv: Driver private information.
5781 *
5782 * Describes both mutable and immutable packet trap attributes. Created by
5783 * devlink during trap registration and used for all trap related operations.
5784 */
5785struct devlink_trap_item {
5786 const struct devlink_trap *trap;
5787 struct devlink_trap_group_item *group_item;
5788 struct list_head list;
5789 enum devlink_trap_action action;
5790 struct devlink_stats __percpu *stats;
5791 void *priv;
5792};
5793
1e8c6619
IS		 5794static struct devlink_trap_policer_item *
5795devlink_trap_policer_item_lookup(struct devlink *devlink, u32 id)
5796{
5797 struct devlink_trap_policer_item *policer_item;
5798
5799 list_for_each_entry(policer_item, &devlink->trap_policer_list, list) {
5800 if (policer_item->policer->id == id)
5801 return policer_item;
5802 }
5803
5804 return NULL;
5805}
5806
0f420b6c
IS		 5807static struct devlink_trap_item *
5808devlink_trap_item_lookup(struct devlink *devlink, const char *name)
5809{
5810 struct devlink_trap_item *trap_item;
5811
5812 list_for_each_entry(trap_item, &devlink->trap_list, list) {
5813 if (!strcmp(trap_item->trap->name, name))
5814 return trap_item;
5815 }
5816
5817 return NULL;
5818}
5819
5820static struct devlink_trap_item *
5821devlink_trap_item_get_from_info(struct devlink *devlink,
5822 struct genl_info *info)
5823{
5824 struct nlattr *attr;
5825
5826 if (!info->attrs[DEVLINK_ATTR_TRAP_NAME])
5827 return NULL;
5828 attr = info->attrs[DEVLINK_ATTR_TRAP_NAME];
5829
5830 return devlink_trap_item_lookup(devlink, nla_data(attr));
5831}
5832
5833static int
5834devlink_trap_action_get_from_info(struct genl_info *info,
5835 enum devlink_trap_action *p_trap_action)
5836{
5837 u8 val;
5838
5839 val = nla_get_u8(info->attrs[DEVLINK_ATTR_TRAP_ACTION]);
5840 switch (val) {
5841 case DEVLINK_TRAP_ACTION_DROP: /* fall-through */
5842 case DEVLINK_TRAP_ACTION_TRAP:
5843 *p_trap_action = val;
5844 break;
5845 default:
5846 return -EINVAL;
5847 }
5848
5849 return 0;
5850}
5851
5852static int devlink_trap_metadata_put(struct sk_buff *msg,
5853 const struct devlink_trap *trap)
5854{
5855 struct nlattr *attr;
5856
5857 attr = nla_nest_start(msg, DEVLINK_ATTR_TRAP_METADATA);
5858 if (!attr)
5859 return -EMSGSIZE;
5860
5861 if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_IN_PORT) &&
5862 nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_IN_PORT))
5863 goto nla_put_failure;
85b0589e
JP		 5864 if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_FA_COOKIE) &&
5865 nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_FA_COOKIE))
5866 goto nla_put_failure;
0f420b6c
IS		 5867
5868 nla_nest_end(msg, attr);
5869
5870 return 0;
5871
5872nla_put_failure:
5873 nla_nest_cancel(msg, attr);
5874 return -EMSGSIZE;
5875}
5876
5877static void devlink_trap_stats_read(struct devlink_stats __percpu *trap_stats,
5878 struct devlink_stats *stats)
5879{
5880 int i;
5881
5882 memset(stats, 0, sizeof(*stats));
5883 for_each_possible_cpu(i) {
5884 struct devlink_stats *cpu_stats;
5885 u64 rx_packets, rx_bytes;
5886 unsigned int start;
5887
5888 cpu_stats = per_cpu_ptr(trap_stats, i);
5889 do {
5890 start = u64_stats_fetch_begin_irq(&cpu_stats->syncp);
5891 rx_packets = cpu_stats->rx_packets;
5892 rx_bytes = cpu_stats->rx_bytes;
5893 } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start));
5894
5895 stats->rx_packets += rx_packets;
5896 stats->rx_bytes += rx_bytes;
5897 }
5898}
5899
5900static int devlink_trap_stats_put(struct sk_buff *msg,
5901 struct devlink_stats __percpu *trap_stats)
5902{
5903 struct devlink_stats stats;
5904 struct nlattr *attr;
5905
5906 devlink_trap_stats_read(trap_stats, &stats);
5907
5908 attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
5909 if (!attr)
5910 return -EMSGSIZE;
5911
5912 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_PACKETS,
5913 stats.rx_packets, DEVLINK_ATTR_PAD))
5914 goto nla_put_failure;
5915
5916 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_BYTES,
5917 stats.rx_bytes, DEVLINK_ATTR_PAD))
5918 goto nla_put_failure;
5919
5920 nla_nest_end(msg, attr);
5921
5922 return 0;
5923
5924nla_put_failure:
5925 nla_nest_cancel(msg, attr);
5926 return -EMSGSIZE;
5927}
5928
5929static int devlink_nl_trap_fill(struct sk_buff *msg, struct devlink *devlink,
5930 const struct devlink_trap_item *trap_item,
5931 enum devlink_command cmd, u32 portid, u32 seq,
5932 int flags)
5933{
5934 struct devlink_trap_group_item *group_item = trap_item->group_item;
5935 void *hdr;
5936 int err;
5937
5938 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
5939 if (!hdr)
5940 return -EMSGSIZE;
5941
5942 if (devlink_nl_put_handle(msg, devlink))
5943 goto nla_put_failure;
5944
5945 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
5946 group_item->group->name))
5947 goto nla_put_failure;
5948
5949 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_NAME, trap_item->trap->name))
5950 goto nla_put_failure;
5951
5952 if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_TYPE, trap_item->trap->type))
5953 goto nla_put_failure;
5954
5955 if (trap_item->trap->generic &&
5956 nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
5957 goto nla_put_failure;
5958
5959 if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_ACTION, trap_item->action))
5960 goto nla_put_failure;
5961
5962 err = devlink_trap_metadata_put(msg, trap_item->trap);
5963 if (err)
5964 goto nla_put_failure;
5965
5966 err = devlink_trap_stats_put(msg, trap_item->stats);
5967 if (err)
5968 goto nla_put_failure;
5969
5970 genlmsg_end(msg, hdr);
5971
5972 return 0;
5973
5974nla_put_failure:
5975 genlmsg_cancel(msg, hdr);
5976 return -EMSGSIZE;
5977}
5978
5979static int devlink_nl_cmd_trap_get_doit(struct sk_buff *skb,
5980 struct genl_info *info)
5981{
5982 struct netlink_ext_ack *extack = info->extack;
5983 struct devlink *devlink = info->user_ptr[0];
5984 struct devlink_trap_item *trap_item;
5985 struct sk_buff *msg;
5986 int err;
5987
5988 if (list_empty(&devlink->trap_list))
5989 return -EOPNOTSUPP;
5990
5991 trap_item = devlink_trap_item_get_from_info(devlink, info);
5992 if (!trap_item) {
5993 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
5994 return -ENOENT;
5995 }
5996
5997 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5998 if (!msg)
5999 return -ENOMEM;
6000
6001 err = devlink_nl_trap_fill(msg, devlink, trap_item,
6002 DEVLINK_CMD_TRAP_NEW, info->snd_portid,
6003 info->snd_seq, 0);
6004 if (err)
6005 goto err_trap_fill;
6006
6007 return genlmsg_reply(msg, info);
6008
6009err_trap_fill:
6010 nlmsg_free(msg);
6011 return err;
6012}
6013
6014static int devlink_nl_cmd_trap_get_dumpit(struct sk_buff *msg,
6015 struct netlink_callback *cb)
6016{
6017 struct devlink_trap_item *trap_item;
6018 struct devlink *devlink;
6019 int start = cb->args[0];
6020 int idx = 0;
6021 int err;
6022
6023 mutex_lock(&devlink_mutex);
6024 list_for_each_entry(devlink, &devlink_list, list) {
6025 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
6026 continue;
6027 mutex_lock(&devlink->lock);
6028 list_for_each_entry(trap_item, &devlink->trap_list, list) {
6029 if (idx < start) {
6030 idx++;
6031 continue;
6032 }
6033 err = devlink_nl_trap_fill(msg, devlink, trap_item,
6034 DEVLINK_CMD_TRAP_NEW,
6035 NETLINK_CB(cb->skb).portid,
6036 cb->nlh->nlmsg_seq,
6037 NLM_F_MULTI);
6038 if (err) {
6039 mutex_unlock(&devlink->lock);
6040 goto out;
6041 }
6042 idx++;
6043 }
6044 mutex_unlock(&devlink->lock);
6045 }
6046out:
6047 mutex_unlock(&devlink_mutex);
6048
6049 cb->args[0] = idx;
6050 return msg->len;
6051}
6052
6053static int __devlink_trap_action_set(struct devlink *devlink,
6054 struct devlink_trap_item *trap_item,
6055 enum devlink_trap_action trap_action,
6056 struct netlink_ext_ack *extack)
6057{
6058 int err;
6059
6060 if (trap_item->action != trap_action &&
6061 trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP) {
6062 NL_SET_ERR_MSG_MOD(extack, "Cannot change action of non-drop traps. Skipping");
6063 return 0;
6064 }
6065
6066 err = devlink->ops->trap_action_set(devlink, trap_item->trap,
6067 trap_action);
6068 if (err)
6069 return err;
6070
6071 trap_item->action = trap_action;
6072
6073 return 0;
6074}
6075
6076static int devlink_trap_action_set(struct devlink *devlink,
6077 struct devlink_trap_item *trap_item,
6078 struct genl_info *info)
6079{
6080 enum devlink_trap_action trap_action;
6081 int err;
6082
6083 if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
6084 return 0;
6085
6086 err = devlink_trap_action_get_from_info(info, &trap_action);
6087 if (err) {
6088 NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
6089 return -EINVAL;
6090 }
6091
6092 return __devlink_trap_action_set(devlink, trap_item, trap_action,
6093 info->extack);
6094}
6095
6096static int devlink_nl_cmd_trap_set_doit(struct sk_buff *skb,
6097 struct genl_info *info)
6098{
6099 struct netlink_ext_ack *extack = info->extack;
6100 struct devlink *devlink = info->user_ptr[0];
6101 struct devlink_trap_item *trap_item;
6102 int err;
6103
6104 if (list_empty(&devlink->trap_list))
6105 return -EOPNOTSUPP;
6106
6107 trap_item = devlink_trap_item_get_from_info(devlink, info);
6108 if (!trap_item) {
6109 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
6110 return -ENOENT;
6111 }
6112
6113 err = devlink_trap_action_set(devlink, trap_item, info);
6114 if (err)
6115 return err;
6116
6117 return 0;
6118}
6119
6120static struct devlink_trap_group_item *
6121devlink_trap_group_item_lookup(struct devlink *devlink, const char *name)
6122{
6123 struct devlink_trap_group_item *group_item;
6124
6125 list_for_each_entry(group_item, &devlink->trap_group_list, list) {
6126 if (!strcmp(group_item->group->name, name))
6127 return group_item;
6128 }
6129
6130 return NULL;
6131}
6132
107f1678
IS		 6133static struct devlink_trap_group_item *
6134devlink_trap_group_item_lookup_by_id(struct devlink *devlink, u16 id)
6135{
6136 struct devlink_trap_group_item *group_item;
6137
6138 list_for_each_entry(group_item, &devlink->trap_group_list, list) {
6139 if (group_item->group->id == id)
6140 return group_item;
6141 }
6142
6143 return NULL;
6144}
6145
0f420b6c
IS		 6146static struct devlink_trap_group_item *
6147devlink_trap_group_item_get_from_info(struct devlink *devlink,
6148 struct genl_info *info)
6149{
6150 char *name;
6151
6152 if (!info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME])
6153 return NULL;
6154 name = nla_data(info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME]);
6155
6156 return devlink_trap_group_item_lookup(devlink, name);
6157}
6158
6159static int
6160devlink_nl_trap_group_fill(struct sk_buff *msg, struct devlink *devlink,
6161 const struct devlink_trap_group_item *group_item,
6162 enum devlink_command cmd, u32 portid, u32 seq,
6163 int flags)
6164{
6165 void *hdr;
6166 int err;
6167
6168 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
6169 if (!hdr)
6170 return -EMSGSIZE;
6171
6172 if (devlink_nl_put_handle(msg, devlink))
6173 goto nla_put_failure;
6174
6175 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
6176 group_item->group->name))
6177 goto nla_put_failure;
6178
6179 if (group_item->group->generic &&
6180 nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
6181 goto nla_put_failure;
6182
f9f54392
IS		 6183 if (group_item->policer_item &&
6184 nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID,
6185 group_item->policer_item->policer->id))
6186 goto nla_put_failure;
6187
0f420b6c
IS		 6188 err = devlink_trap_stats_put(msg, group_item->stats);
6189 if (err)
6190 goto nla_put_failure;
6191
6192 genlmsg_end(msg, hdr);
6193
6194 return 0;
6195
6196nla_put_failure:
6197 genlmsg_cancel(msg, hdr);
6198 return -EMSGSIZE;
6199}
6200
6201static int devlink_nl_cmd_trap_group_get_doit(struct sk_buff *skb,
6202 struct genl_info *info)
6203{
6204 struct netlink_ext_ack *extack = info->extack;
6205 struct devlink *devlink = info->user_ptr[0];
6206 struct devlink_trap_group_item *group_item;
6207 struct sk_buff *msg;
6208 int err;
6209
6210 if (list_empty(&devlink->trap_group_list))
6211 return -EOPNOTSUPP;
6212
6213 group_item = devlink_trap_group_item_get_from_info(devlink, info);
6214 if (!group_item) {
6215 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
6216 return -ENOENT;
6217 }
6218
6219 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6220 if (!msg)
6221 return -ENOMEM;
6222
6223 err = devlink_nl_trap_group_fill(msg, devlink, group_item,
6224 DEVLINK_CMD_TRAP_GROUP_NEW,
6225 info->snd_portid, info->snd_seq, 0);
6226 if (err)
6227 goto err_trap_group_fill;
6228
6229 return genlmsg_reply(msg, info);
6230
6231err_trap_group_fill:
6232 nlmsg_free(msg);
6233 return err;
6234}
6235
6236static int devlink_nl_cmd_trap_group_get_dumpit(struct sk_buff *msg,
6237 struct netlink_callback *cb)
6238{
6239 enum devlink_command cmd = DEVLINK_CMD_TRAP_GROUP_NEW;
6240 struct devlink_trap_group_item *group_item;
6241 u32 portid = NETLINK_CB(cb->skb).portid;
6242 struct devlink *devlink;
6243 int start = cb->args[0];
6244 int idx = 0;
6245 int err;
6246
6247 mutex_lock(&devlink_mutex);
6248 list_for_each_entry(devlink, &devlink_list, list) {
6249 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
6250 continue;
6251 mutex_lock(&devlink->lock);
6252 list_for_each_entry(group_item, &devlink->trap_group_list,
6253 list) {
6254 if (idx < start) {
6255 idx++;
6256 continue;
6257 }
6258 err = devlink_nl_trap_group_fill(msg, devlink,
6259 group_item, cmd,
6260 portid,
6261 cb->nlh->nlmsg_seq,
6262 NLM_F_MULTI);
6263 if (err) {
6264 mutex_unlock(&devlink->lock);
6265 goto out;
6266 }
6267 idx++;
6268 }
6269 mutex_unlock(&devlink->lock);
6270 }
6271out:
6272 mutex_unlock(&devlink_mutex);
6273
6274 cb->args[0] = idx;
6275 return msg->len;
6276}
6277
6278static int
6279__devlink_trap_group_action_set(struct devlink *devlink,
6280 struct devlink_trap_group_item *group_item,
6281 enum devlink_trap_action trap_action,
6282 struct netlink_ext_ack *extack)
6283{
6284 const char *group_name = group_item->group->name;
6285 struct devlink_trap_item *trap_item;
6286 int err;
6287
6288 list_for_each_entry(trap_item, &devlink->trap_list, list) {
107f1678 6289 if (strcmp(trap_item->group_item->group->name, group_name))
0f420b6c
IS		 6290 continue;
6291 err = __devlink_trap_action_set(devlink, trap_item,
6292 trap_action, extack);
6293 if (err)
6294 return err;
6295 }
6296
6297 return 0;
6298}
6299
6300static int
6301devlink_trap_group_action_set(struct devlink *devlink,
6302 struct devlink_trap_group_item *group_item,
c064875a 6303 struct genl_info *info, bool *p_modified)
0f420b6c
IS		 6304{
6305 enum devlink_trap_action trap_action;
6306 int err;
6307
6308 if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
6309 return 0;
6310
6311 err = devlink_trap_action_get_from_info(info, &trap_action);
6312 if (err) {
6313 NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
6314 return -EINVAL;
6315 }
6316
6317 err = __devlink_trap_group_action_set(devlink, group_item, trap_action,
6318 info->extack);
6319 if (err)
6320 return err;
6321
c064875a
IS		 6322 *p_modified = true;
6323
6324 return 0;
6325}
6326
6327static int devlink_trap_group_set(struct devlink *devlink,
6328 struct devlink_trap_group_item *group_item,
6329 struct genl_info *info)
6330{
6331 struct devlink_trap_policer_item *policer_item;
6332 struct netlink_ext_ack *extack = info->extack;
6333 const struct devlink_trap_policer *policer;
6334 struct nlattr **attrs = info->attrs;
6335 int err;
6336
6337 if (!attrs[DEVLINK_ATTR_TRAP_POLICER_ID])
6338 return 0;
6339
6340 if (!devlink->ops->trap_group_set)
6341 return -EOPNOTSUPP;
6342
6343 policer_item = group_item->policer_item;
6344 if (attrs[DEVLINK_ATTR_TRAP_POLICER_ID]) {
6345 u32 policer_id;
6346
6347 policer_id = nla_get_u32(attrs[DEVLINK_ATTR_TRAP_POLICER_ID]);
6348 policer_item = devlink_trap_policer_item_lookup(devlink,
6349 policer_id);
6350 if (policer_id && !policer_item) {
6351 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
6352 return -ENOENT;
6353 }
6354 }
6355 policer = policer_item ? policer_item->policer : NULL;
6356
6357 err = devlink->ops->trap_group_set(devlink, group_item->group, policer);
6358 if (err)
6359 return err;
6360
6361 group_item->policer_item = policer_item;
6362
0f420b6c
IS		 6363 return 0;
6364}
6365
6366static int devlink_nl_cmd_trap_group_set_doit(struct sk_buff *skb,
6367 struct genl_info *info)
6368{
6369 struct netlink_ext_ack *extack = info->extack;
6370 struct devlink *devlink = info->user_ptr[0];
6371 struct devlink_trap_group_item *group_item;
c064875a 6372 bool modified = false;
0f420b6c
IS		 6373 int err;
6374
6375 if (list_empty(&devlink->trap_group_list))
6376 return -EOPNOTSUPP;
6377
6378 group_item = devlink_trap_group_item_get_from_info(devlink, info);
6379 if (!group_item) {
6380 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
6381 return -ENOENT;
6382 }
6383
c064875a
IS		 6384 err = devlink_trap_group_action_set(devlink, group_item, info,
6385 &modified);
0f420b6c
IS		 6386 if (err)
6387 return err;
6388
c064875a
IS		 6389 err = devlink_trap_group_set(devlink, group_item, info);
6390 if (err)
6391 goto err_trap_group_set;
6392
0f420b6c 6393 return 0;
c064875a
IS		 6394
6395err_trap_group_set:
6396 if (modified)
6397 NL_SET_ERR_MSG_MOD(extack, "Trap group set failed, but some changes were committed already");
6398 return err;
0f420b6c
IS		 6399}
6400
1e8c6619
IS		 6401static struct devlink_trap_policer_item *
6402devlink_trap_policer_item_get_from_info(struct devlink *devlink,
6403 struct genl_info *info)
6404{
6405 u32 id;
6406
6407 if (!info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID])
6408 return NULL;
6409 id = nla_get_u32(info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID]);
6410
6411 return devlink_trap_policer_item_lookup(devlink, id);
6412}
6413
6414static int
6415devlink_trap_policer_stats_put(struct sk_buff *msg, struct devlink *devlink,
6416 const struct devlink_trap_policer *policer)
6417{
6418 struct nlattr *attr;
6419 u64 drops;
6420 int err;
6421
6422 if (!devlink->ops->trap_policer_counter_get)
6423 return 0;
6424
6425 err = devlink->ops->trap_policer_counter_get(devlink, policer, &drops);
6426 if (err)
6427 return err;
6428
6429 attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
6430 if (!attr)
6431 return -EMSGSIZE;
6432
6433 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_DROPPED, drops,
6434 DEVLINK_ATTR_PAD))
6435 goto nla_put_failure;
6436
6437 nla_nest_end(msg, attr);
6438
6439 return 0;
6440
6441nla_put_failure:
6442 nla_nest_cancel(msg, attr);
6443 return -EMSGSIZE;
6444}
6445
6446static int
6447devlink_nl_trap_policer_fill(struct sk_buff *msg, struct devlink *devlink,
6448 const struct devlink_trap_policer_item *policer_item,
6449 enum devlink_command cmd, u32 portid, u32 seq,
6450 int flags)
6451{
6452 void *hdr;
6453 int err;
6454
6455 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
6456 if (!hdr)
6457 return -EMSGSIZE;
6458
6459 if (devlink_nl_put_handle(msg, devlink))
6460 goto nla_put_failure;
6461
6462 if (nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID,
6463 policer_item->policer->id))
6464 goto nla_put_failure;
6465
6466 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_RATE,
6467 policer_item->rate, DEVLINK_ATTR_PAD))
6468 goto nla_put_failure;
6469
6470 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_BURST,
6471 policer_item->burst, DEVLINK_ATTR_PAD))
6472 goto nla_put_failure;
6473
6474 err = devlink_trap_policer_stats_put(msg, devlink,
6475 policer_item->policer);
6476 if (err)
6477 goto nla_put_failure;
6478
6479 genlmsg_end(msg, hdr);
6480
6481 return 0;
6482
6483nla_put_failure:
6484 genlmsg_cancel(msg, hdr);
6485 return -EMSGSIZE;
6486}
6487
6488static int devlink_nl_cmd_trap_policer_get_doit(struct sk_buff *skb,
6489 struct genl_info *info)
6490{
6491 struct devlink_trap_policer_item *policer_item;
6492 struct netlink_ext_ack *extack = info->extack;
6493 struct devlink *devlink = info->user_ptr[0];
6494 struct sk_buff *msg;
6495 int err;
6496
6497 if (list_empty(&devlink->trap_policer_list))
6498 return -EOPNOTSUPP;
6499
6500 policer_item = devlink_trap_policer_item_get_from_info(devlink, info);
6501 if (!policer_item) {
6502 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
6503 return -ENOENT;
6504 }
6505
6506 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6507 if (!msg)
6508 return -ENOMEM;
6509
6510 err = devlink_nl_trap_policer_fill(msg, devlink, policer_item,
6511 DEVLINK_CMD_TRAP_POLICER_NEW,
6512 info->snd_portid, info->snd_seq, 0);
6513 if (err)
6514 goto err_trap_policer_fill;
6515
6516 return genlmsg_reply(msg, info);
6517
6518err_trap_policer_fill:
6519 nlmsg_free(msg);
6520 return err;
6521}
6522
6523static int devlink_nl_cmd_trap_policer_get_dumpit(struct sk_buff *msg,
6524 struct netlink_callback *cb)
6525{
6526 enum devlink_command cmd = DEVLINK_CMD_TRAP_POLICER_NEW;
6527 struct devlink_trap_policer_item *policer_item;
6528 u32 portid = NETLINK_CB(cb->skb).portid;
6529 struct devlink *devlink;
6530 int start = cb->args[0];
6531 int idx = 0;
6532 int err;
6533
6534 mutex_lock(&devlink_mutex);
6535 list_for_each_entry(devlink, &devlink_list, list) {
6536 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
6537 continue;
6538 mutex_lock(&devlink->lock);
6539 list_for_each_entry(policer_item, &devlink->trap_policer_list,
6540 list) {
6541 if (idx < start) {
6542 idx++;
6543 continue;
6544 }
6545 err = devlink_nl_trap_policer_fill(msg, devlink,
6546 policer_item, cmd,
6547 portid,
6548 cb->nlh->nlmsg_seq,
6549 NLM_F_MULTI);
6550 if (err) {
6551 mutex_unlock(&devlink->lock);
6552 goto out;
6553 }
6554 idx++;
6555 }
6556 mutex_unlock(&devlink->lock);
6557 }
6558out:
6559 mutex_unlock(&devlink_mutex);
6560
6561 cb->args[0] = idx;
6562 return msg->len;
6563}
6564
6565static int
6566devlink_trap_policer_set(struct devlink *devlink,
6567 struct devlink_trap_policer_item *policer_item,
6568 struct genl_info *info)
6569{
6570 struct netlink_ext_ack *extack = info->extack;
6571 struct nlattr **attrs = info->attrs;
6572 u64 rate, burst;
6573 int err;
6574
6575 rate = policer_item->rate;
6576 burst = policer_item->burst;
6577
6578 if (attrs[DEVLINK_ATTR_TRAP_POLICER_RATE])
6579 rate = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_RATE]);
6580
6581 if (attrs[DEVLINK_ATTR_TRAP_POLICER_BURST])
6582 burst = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_BURST]);
6583
6584 if (rate < policer_item->policer->min_rate) {
6585 NL_SET_ERR_MSG_MOD(extack, "Policer rate lower than limit");
6586 return -EINVAL;
6587 }
6588
6589 if (rate > policer_item->policer->max_rate) {
6590 NL_SET_ERR_MSG_MOD(extack, "Policer rate higher than limit");
6591 return -EINVAL;
6592 }
6593
6594 if (burst < policer_item->policer->min_burst) {
6595 NL_SET_ERR_MSG_MOD(extack, "Policer burst size lower than limit");
6596 return -EINVAL;
6597 }
6598
6599 if (burst > policer_item->policer->max_burst) {
6600 NL_SET_ERR_MSG_MOD(extack, "Policer burst size higher than limit");
6601 return -EINVAL;
6602 }
6603
6604 err = devlink->ops->trap_policer_set(devlink, policer_item->policer,
6605 rate, burst, info->extack);
6606 if (err)
6607 return err;
6608
6609 policer_item->rate = rate;
6610 policer_item->burst = burst;
6611
6612 return 0;
6613}
6614
6615static int devlink_nl_cmd_trap_policer_set_doit(struct sk_buff *skb,
6616 struct genl_info *info)
6617{
6618 struct devlink_trap_policer_item *policer_item;
6619 struct netlink_ext_ack *extack = info->extack;
6620 struct devlink *devlink = info->user_ptr[0];
6621
6622 if (list_empty(&devlink->trap_policer_list))
6623 return -EOPNOTSUPP;
6624
6625 if (!devlink->ops->trap_policer_set)
6626 return -EOPNOTSUPP;
6627
6628 policer_item = devlink_trap_policer_item_get_from_info(devlink, info);
6629 if (!policer_item) {
6630 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
6631 return -ENOENT;
6632 }
6633
6634 return devlink_trap_policer_set(devlink, policer_item, info);
6635}
6636
bfcd3a46 6637static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = {
1e8c6619
IS		 6638 [DEVLINK_ATTR_UNSPEC] = { .strict_start_type =
6639 DEVLINK_ATTR_TRAP_POLICER_ID },
bfcd3a46
JP		 6640 [DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING },
6641 [DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING },
6642 [DEVLINK_ATTR_PORT_INDEX] = { .type = NLA_U32 },
6643 [DEVLINK_ATTR_PORT_TYPE] = { .type = NLA_U16 },
6644 [DEVLINK_ATTR_PORT_SPLIT_COUNT] = { .type = NLA_U32 },
bf797471
JP		 6645 [DEVLINK_ATTR_SB_INDEX] = { .type = NLA_U32 },
6646 [DEVLINK_ATTR_SB_POOL_INDEX] = { .type = NLA_U16 },
6647 [DEVLINK_ATTR_SB_POOL_TYPE] = { .type = NLA_U8 },
6648 [DEVLINK_ATTR_SB_POOL_SIZE] = { .type = NLA_U32 },
6649 [DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE] = { .type = NLA_U8 },
6650 [DEVLINK_ATTR_SB_THRESHOLD] = { .type = NLA_U32 },
6651 [DEVLINK_ATTR_SB_TC_INDEX] = { .type = NLA_U16 },
08f4b591 6652 [DEVLINK_ATTR_ESWITCH_MODE] = { .type = NLA_U16 },
59bfde01 6653 [DEVLINK_ATTR_ESWITCH_INLINE_MODE] = { .type = NLA_U8 },
f43e9b06 6654 [DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = { .type = NLA_U8 },
1555d204
AS		 6655 [DEVLINK_ATTR_DPIPE_TABLE_NAME] = { .type = NLA_NUL_STRING },
6656 [DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED] = { .type = NLA_U8 },
d9f9b9a4
AS		 6657 [DEVLINK_ATTR_RESOURCE_ID] = { .type = NLA_U64},
6658 [DEVLINK_ATTR_RESOURCE_SIZE] = { .type = NLA_U64},
e3b7ca18
MS		 6659 [DEVLINK_ATTR_PARAM_NAME] = { .type = NLA_NUL_STRING },
6660 [DEVLINK_ATTR_PARAM_TYPE] = { .type = NLA_U8 },
6661 [DEVLINK_ATTR_PARAM_VALUE_CMODE] = { .type = NLA_U8 },
d8db7ea5 6662 [DEVLINK_ATTR_REGION_NAME] = { .type = NLA_NUL_STRING },
866319bb 6663 [DEVLINK_ATTR_REGION_SNAPSHOT_ID] = { .type = NLA_U32 },
ff3b63b8
JK		 6664 [DEVLINK_ATTR_REGION_CHUNK_ADDR] = { .type = NLA_U64 },
6665 [DEVLINK_ATTR_REGION_CHUNK_LEN] = { .type = NLA_U64 },
7afe335a 6666 [DEVLINK_ATTR_HEALTH_REPORTER_NAME] = { .type = NLA_NUL_STRING },
a1e55ec0
EBE		 6667 [DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] = { .type = NLA_U64 },
6668 [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER] = { .type = NLA_U8 },
76726ccb
JK		 6669 [DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME] = { .type = NLA_NUL_STRING },
6670 [DEVLINK_ATTR_FLASH_UPDATE_COMPONENT] = { .type = NLA_NUL_STRING },
0f420b6c
IS		 6671 [DEVLINK_ATTR_TRAP_NAME] = { .type = NLA_NUL_STRING },
6672 [DEVLINK_ATTR_TRAP_ACTION] = { .type = NLA_U8 },
6673 [DEVLINK_ATTR_TRAP_GROUP_NAME] = { .type = NLA_NUL_STRING },
070c63f2
JP		 6674 [DEVLINK_ATTR_NETNS_PID] = { .type = NLA_U32 },
6675 [DEVLINK_ATTR_NETNS_FD] = { .type = NLA_U32 },
6676 [DEVLINK_ATTR_NETNS_ID] = { .type = NLA_U32 },
48bb52c8 6677 [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP] = { .type = NLA_U8 },
1e8c6619
IS		 6678 [DEVLINK_ATTR_TRAP_POLICER_ID] = { .type = NLA_U32 },
6679 [DEVLINK_ATTR_TRAP_POLICER_RATE] = { .type = NLA_U64 },
6680 [DEVLINK_ATTR_TRAP_POLICER_BURST] = { .type = NLA_U64 },
bfcd3a46
JP		 6681};
6682
6683static const struct genl_ops devlink_nl_ops[] = {
6684 {
6685 .cmd = DEVLINK_CMD_GET,
ef6243ac 6686 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46
JP		 6687 .doit = devlink_nl_cmd_get_doit,
6688 .dumpit = devlink_nl_cmd_get_dumpit,
1fc2257e 6689 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
bfcd3a46
JP		 6690 /* can be retrieved by unprivileged users */
6691 },
6692 {
6693 .cmd = DEVLINK_CMD_PORT_GET,
ef6243ac 6694 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46
JP		 6695 .doit = devlink_nl_cmd_port_get_doit,
6696 .dumpit = devlink_nl_cmd_port_get_dumpit,
bfcd3a46
JP		 6697 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
6698 /* can be retrieved by unprivileged users */
6699 },
6700 {
6701 .cmd = DEVLINK_CMD_PORT_SET,
ef6243ac 6702 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46 6703 .doit = devlink_nl_cmd_port_set_doit,
bfcd3a46
JP		 6704 .flags = GENL_ADMIN_PERM,
6705 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
6706 },
6707 {
6708 .cmd = DEVLINK_CMD_PORT_SPLIT,
ef6243ac 6709 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46 6710 .doit = devlink_nl_cmd_port_split_doit,
bfcd3a46 6711 .flags = GENL_ADMIN_PERM,
2406e7e5
AS		 6712 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6713 DEVLINK_NL_FLAG_NO_LOCK,
bfcd3a46
JP		 6714 },
6715 {
6716 .cmd = DEVLINK_CMD_PORT_UNSPLIT,
ef6243ac 6717 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46 6718 .doit = devlink_nl_cmd_port_unsplit_doit,
bfcd3a46 6719 .flags = GENL_ADMIN_PERM,
2406e7e5
AS		 6720 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6721 DEVLINK_NL_FLAG_NO_LOCK,
bfcd3a46 6722 },
bf797471
JP		 6723 {
6724 .cmd = DEVLINK_CMD_SB_GET,
ef6243ac 6725 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471
JP		 6726 .doit = devlink_nl_cmd_sb_get_doit,
6727 .dumpit = devlink_nl_cmd_sb_get_dumpit,
bf797471
JP		 6728 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6729 DEVLINK_NL_FLAG_NEED_SB,
6730 /* can be retrieved by unprivileged users */
6731 },
6732 {
6733 .cmd = DEVLINK_CMD_SB_POOL_GET,
ef6243ac 6734 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471
JP		 6735 .doit = devlink_nl_cmd_sb_pool_get_doit,
6736 .dumpit = devlink_nl_cmd_sb_pool_get_dumpit,
bf797471
JP		 6737 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6738 DEVLINK_NL_FLAG_NEED_SB,
6739 /* can be retrieved by unprivileged users */
6740 },
6741 {
6742 .cmd = DEVLINK_CMD_SB_POOL_SET,
ef6243ac 6743 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471 6744 .doit = devlink_nl_cmd_sb_pool_set_doit,
bf797471
JP		 6745 .flags = GENL_ADMIN_PERM,
6746 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6747 DEVLINK_NL_FLAG_NEED_SB,
6748 },
6749 {
6750 .cmd = DEVLINK_CMD_SB_PORT_POOL_GET,
ef6243ac 6751 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471
JP		 6752 .doit = devlink_nl_cmd_sb_port_pool_get_doit,
6753 .dumpit = devlink_nl_cmd_sb_port_pool_get_dumpit,
bf797471
JP		 6754 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
6755 DEVLINK_NL_FLAG_NEED_SB,
6756 /* can be retrieved by unprivileged users */
6757 },
6758 {
6759 .cmd = DEVLINK_CMD_SB_PORT_POOL_SET,
ef6243ac 6760 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471 6761 .doit = devlink_nl_cmd_sb_port_pool_set_doit,
bf797471
JP		 6762 .flags = GENL_ADMIN_PERM,
6763 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
6764 DEVLINK_NL_FLAG_NEED_SB,
6765 },
6766 {
6767 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_GET,
ef6243ac 6768 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471
JP		 6769 .doit = devlink_nl_cmd_sb_tc_pool_bind_get_doit,
6770 .dumpit = devlink_nl_cmd_sb_tc_pool_bind_get_dumpit,
bf797471
JP		 6771 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
6772 DEVLINK_NL_FLAG_NEED_SB,
6773 /* can be retrieved by unprivileged users */
6774 },
6775 {
6776 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_SET,
ef6243ac 6777 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471 6778 .doit = devlink_nl_cmd_sb_tc_pool_bind_set_doit,
bf797471
JP		 6779 .flags = GENL_ADMIN_PERM,
6780 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
6781 DEVLINK_NL_FLAG_NEED_SB,
6782 },
df38dafd
JP		 6783 {
6784 .cmd = DEVLINK_CMD_SB_OCC_SNAPSHOT,
ef6243ac 6785 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
df38dafd 6786 .doit = devlink_nl_cmd_sb_occ_snapshot_doit,
df38dafd
JP		 6787 .flags = GENL_ADMIN_PERM,
6788 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
2406e7e5 6789 DEVLINK_NL_FLAG_NEED_SB,
df38dafd
JP		 6790 },
6791 {
6792 .cmd = DEVLINK_CMD_SB_OCC_MAX_CLEAR,
ef6243ac 6793 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
df38dafd 6794 .doit = devlink_nl_cmd_sb_occ_max_clear_doit,
df38dafd
JP		 6795 .flags = GENL_ADMIN_PERM,
6796 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
2406e7e5 6797 DEVLINK_NL_FLAG_NEED_SB,
df38dafd 6798 },
08f4b591 6799 {
adf200f3 6800 .cmd = DEVLINK_CMD_ESWITCH_GET,
ef6243ac 6801 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
adf200f3 6802 .doit = devlink_nl_cmd_eswitch_get_doit,
08f4b591 6803 .flags = GENL_ADMIN_PERM,
98fed6eb
PP		 6804 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6805 DEVLINK_NL_FLAG_NO_LOCK,
08f4b591
OG		 6806 },
6807 {
adf200f3 6808 .cmd = DEVLINK_CMD_ESWITCH_SET,
ef6243ac 6809 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
adf200f3 6810 .doit = devlink_nl_cmd_eswitch_set_doit,
08f4b591 6811 .flags = GENL_ADMIN_PERM,
7ac1cc9a
JK		 6812 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6813 DEVLINK_NL_FLAG_NO_LOCK,
08f4b591 6814 },
1555d204
AS		 6815 {
6816 .cmd = DEVLINK_CMD_DPIPE_TABLE_GET,
ef6243ac 6817 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1555d204 6818 .doit = devlink_nl_cmd_dpipe_table_get,
1555d204 6819 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
67ae686b 6820 /* can be retrieved by unprivileged users */
1555d204
AS		 6821 },
6822 {
6823 .cmd = DEVLINK_CMD_DPIPE_ENTRIES_GET,
ef6243ac 6824 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1555d204 6825 .doit = devlink_nl_cmd_dpipe_entries_get,
1555d204 6826 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
67ae686b 6827 /* can be retrieved by unprivileged users */
1555d204
AS		 6828 },
6829 {
6830 .cmd = DEVLINK_CMD_DPIPE_HEADERS_GET,
ef6243ac 6831 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1555d204 6832 .doit = devlink_nl_cmd_dpipe_headers_get,
1555d204 6833 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
67ae686b 6834 /* can be retrieved by unprivileged users */
1555d204
AS		 6835 },
6836 {
6837 .cmd = DEVLINK_CMD_DPIPE_TABLE_COUNTERS_SET,
ef6243ac 6838 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1555d204 6839 .doit = devlink_nl_cmd_dpipe_table_counters_set,
1555d204
AS		 6840 .flags = GENL_ADMIN_PERM,
6841 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6842 },
d9f9b9a4
AS		 6843 {
6844 .cmd = DEVLINK_CMD_RESOURCE_SET,
ef6243ac 6845 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
d9f9b9a4 6846 .doit = devlink_nl_cmd_resource_set,
d9f9b9a4
AS		 6847 .flags = GENL_ADMIN_PERM,
6848 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6849 },
6850 {
6851 .cmd = DEVLINK_CMD_RESOURCE_DUMP,
ef6243ac 6852 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
d9f9b9a4 6853 .doit = devlink_nl_cmd_resource_dump,
d9f9b9a4 6854 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
67ae686b 6855 /* can be retrieved by unprivileged users */
d9f9b9a4 6856 },
2d8dc5bb
AS		 6857 {
6858 .cmd = DEVLINK_CMD_RELOAD,
ef6243ac 6859 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2d8dc5bb 6860 .doit = devlink_nl_cmd_reload,
2d8dc5bb
AS		 6861 .flags = GENL_ADMIN_PERM,
6862 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6863 DEVLINK_NL_FLAG_NO_LOCK,
6864 },
45f05def
MS		 6865 {
6866 .cmd = DEVLINK_CMD_PARAM_GET,
ef6243ac 6867 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
45f05def
MS		 6868 .doit = devlink_nl_cmd_param_get_doit,
6869 .dumpit = devlink_nl_cmd_param_get_dumpit,
45f05def
MS		 6870 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6871 /* can be retrieved by unprivileged users */
6872 },
e3b7ca18
MS		 6873 {
6874 .cmd = DEVLINK_CMD_PARAM_SET,
ef6243ac 6875 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
e3b7ca18 6876 .doit = devlink_nl_cmd_param_set_doit,
e3b7ca18
MS		 6877 .flags = GENL_ADMIN_PERM,
6878 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6879 },
f4601dee
VV		 6880 {
6881 .cmd = DEVLINK_CMD_PORT_PARAM_GET,
ef6243ac 6882 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
f4601dee
VV		 6883 .doit = devlink_nl_cmd_port_param_get_doit,
6884 .dumpit = devlink_nl_cmd_port_param_get_dumpit,
f4601dee
VV		 6885 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
6886 /* can be retrieved by unprivileged users */
6887 },
9c54873b
VV		 6888 {
6889 .cmd = DEVLINK_CMD_PORT_PARAM_SET,
ef6243ac 6890 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
9c54873b 6891 .doit = devlink_nl_cmd_port_param_set_doit,
9c54873b
VV		 6892 .flags = GENL_ADMIN_PERM,
6893 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
6894 },
d8db7ea5
AV		 6895 {
6896 .cmd = DEVLINK_CMD_REGION_GET,
ef6243ac 6897 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
d8db7ea5
AV		 6898 .doit = devlink_nl_cmd_region_get_doit,
6899 .dumpit = devlink_nl_cmd_region_get_dumpit,
d8db7ea5
AV		 6900 .flags = GENL_ADMIN_PERM,
6901 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6902 },
b9a17abf
JK		 6903 {
6904 .cmd = DEVLINK_CMD_REGION_NEW,
6905 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6906 .doit = devlink_nl_cmd_region_new,
6907 .flags = GENL_ADMIN_PERM,
6908 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6909 },
866319bb
AV		 6910 {
6911 .cmd = DEVLINK_CMD_REGION_DEL,
ef6243ac 6912 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
866319bb 6913 .doit = devlink_nl_cmd_region_del,
866319bb
AV		 6914 .flags = GENL_ADMIN_PERM,
6915 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6916 },
4e54795a
AV		 6917 {
6918 .cmd = DEVLINK_CMD_REGION_READ,
ee85da53
JP		 6919 .validate = GENL_DONT_VALIDATE_STRICT |
6920 GENL_DONT_VALIDATE_DUMP_STRICT,
4e54795a 6921 .dumpit = devlink_nl_cmd_region_read_dumpit,
4e54795a
AV		 6922 .flags = GENL_ADMIN_PERM,
6923 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6924 },
f9cf2288
JK		 6925 {
6926 .cmd = DEVLINK_CMD_INFO_GET,
ef6243ac 6927 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
f9cf2288
JK		 6928 .doit = devlink_nl_cmd_info_get_doit,
6929 .dumpit = devlink_nl_cmd_info_get_dumpit,
f9cf2288
JK		 6930 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6931 /* can be retrieved by unprivileged users */
6932 },
7afe335a
EBE		 6933 {
6934 .cmd = DEVLINK_CMD_HEALTH_REPORTER_GET,
ef6243ac 6935 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7afe335a
EBE		 6936 .doit = devlink_nl_cmd_health_reporter_get_doit,
6937 .dumpit = devlink_nl_cmd_health_reporter_get_dumpit,
b587bdaf
MS		 6938 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6939 DEVLINK_NL_FLAG_NO_LOCK,
7afe335a
EBE		 6940 /* can be retrieved by unprivileged users */
6941 },
a1e55ec0
EBE		 6942 {
6943 .cmd = DEVLINK_CMD_HEALTH_REPORTER_SET,
ef6243ac 6944 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
a1e55ec0 6945 .doit = devlink_nl_cmd_health_reporter_set_doit,
a1e55ec0 6946 .flags = GENL_ADMIN_PERM,
b587bdaf
MS		 6947 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6948 DEVLINK_NL_FLAG_NO_LOCK,
a1e55ec0 6949 },
20a0943a
EBE		 6950 {
6951 .cmd = DEVLINK_CMD_HEALTH_REPORTER_RECOVER,
ef6243ac 6952 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
20a0943a 6953 .doit = devlink_nl_cmd_health_reporter_recover_doit,
20a0943a 6954 .flags = GENL_ADMIN_PERM,
b587bdaf
MS		 6955 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6956 DEVLINK_NL_FLAG_NO_LOCK,
20a0943a 6957 },
fca42a27
EBE		 6958 {
6959 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE,
ef6243ac 6960 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
fca42a27 6961 .doit = devlink_nl_cmd_health_reporter_diagnose_doit,
fca42a27 6962 .flags = GENL_ADMIN_PERM,
b587bdaf
MS		 6963 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6964 DEVLINK_NL_FLAG_NO_LOCK,
fca42a27 6965 },
35455e23
EBE		 6966 {
6967 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET,
82a843de
JP		 6968 .validate = GENL_DONT_VALIDATE_STRICT |
6969 GENL_DONT_VALIDATE_DUMP_STRICT,
e44ef4e4 6970 .dumpit = devlink_nl_cmd_health_reporter_dump_get_dumpit,
35455e23
EBE		 6971 .flags = GENL_ADMIN_PERM,
6972 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6973 DEVLINK_NL_FLAG_NO_LOCK,
6974 },
6975 {
6976 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_CLEAR,
ef6243ac 6977 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
35455e23 6978 .doit = devlink_nl_cmd_health_reporter_dump_clear_doit,
35455e23
EBE		 6979 .flags = GENL_ADMIN_PERM,
6980 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6981 DEVLINK_NL_FLAG_NO_LOCK,
6982 },
76726ccb
JK		 6983 {
6984 .cmd = DEVLINK_CMD_FLASH_UPDATE,
ef6243ac 6985 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
76726ccb 6986 .doit = devlink_nl_cmd_flash_update,
76726ccb
JK		 6987 .flags = GENL_ADMIN_PERM,
6988 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6989 },
0f420b6c
IS		 6990 {
6991 .cmd = DEVLINK_CMD_TRAP_GET,
6992 .doit = devlink_nl_cmd_trap_get_doit,
6993 .dumpit = devlink_nl_cmd_trap_get_dumpit,
6994 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6995 /* can be retrieved by unprivileged users */
6996 },
6997 {
6998 .cmd = DEVLINK_CMD_TRAP_SET,
6999 .doit = devlink_nl_cmd_trap_set_doit,
7000 .flags = GENL_ADMIN_PERM,
7001 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
7002 },
7003 {
7004 .cmd = DEVLINK_CMD_TRAP_GROUP_GET,
7005 .doit = devlink_nl_cmd_trap_group_get_doit,
7006 .dumpit = devlink_nl_cmd_trap_group_get_dumpit,
7007 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
7008 /* can be retrieved by unprivileged users */
7009 },
7010 {
7011 .cmd = DEVLINK_CMD_TRAP_GROUP_SET,
7012 .doit = devlink_nl_cmd_trap_group_set_doit,
7013 .flags = GENL_ADMIN_PERM,
7014 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
7015 },
1e8c6619
IS		 7016 {
7017 .cmd = DEVLINK_CMD_TRAP_POLICER_GET,
7018 .doit = devlink_nl_cmd_trap_policer_get_doit,
7019 .dumpit = devlink_nl_cmd_trap_policer_get_dumpit,
7020 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
7021 /* can be retrieved by unprivileged users */
7022 },
7023 {
7024 .cmd = DEVLINK_CMD_TRAP_POLICER_SET,
7025 .doit = devlink_nl_cmd_trap_policer_set_doit,
7026 .flags = GENL_ADMIN_PERM,
7027 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
7028 },
bfcd3a46
JP		 7029};
7030
56989f6d 7031static struct genl_family devlink_nl_family __ro_after_init = {
489111e5
JB		 7032 .name = DEVLINK_GENL_NAME,
7033 .version = DEVLINK_GENL_VERSION,
7034 .maxattr = DEVLINK_ATTR_MAX,
3b0f31f2 7035 .policy = devlink_nl_policy,
489111e5
JB		 7036 .netnsok = true,
7037 .pre_doit = devlink_nl_pre_doit,
7038 .post_doit = devlink_nl_post_doit,
7039 .module = THIS_MODULE,
7040 .ops = devlink_nl_ops,
7041 .n_ops = ARRAY_SIZE(devlink_nl_ops),
7042 .mcgrps = devlink_nl_mcgrps,
7043 .n_mcgrps = ARRAY_SIZE(devlink_nl_mcgrps),
7044};
7045
bfcd3a46
JP		 7046/**
7047 * devlink_alloc - Allocate new devlink instance resources
7048 *
7049 * @ops: ops
7050 * @priv_size: size of user private data
7051 *
7052 * Allocate new devlink instance resources, including devlink index
7053 * and name.
7054 */
7055struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size)
7056{
7057 struct devlink *devlink;
7058
be6fe1d8
JK		 7059 if (WARN_ON(!ops))
7060 return NULL;
7061
bfcd3a46
JP		 7062 devlink = kzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL);
7063 if (!devlink)
7064 return NULL;
7065 devlink->ops = ops;
12102436 7066 xa_init_flags(&devlink->snapshot_ids, XA_FLAGS_ALLOC);
8273fd84 7067 __devlink_net_set(devlink, &init_net);
bfcd3a46 7068 INIT_LIST_HEAD(&devlink->port_list);
bf797471 7069 INIT_LIST_HEAD(&devlink->sb_list);
1555d204 7070 INIT_LIST_HEAD_RCU(&devlink->dpipe_table_list);
d9f9b9a4 7071 INIT_LIST_HEAD(&devlink->resource_list);
eabaef18 7072 INIT_LIST_HEAD(&devlink->param_list);
b16ebe92 7073 INIT_LIST_HEAD(&devlink->region_list);
a0bdcc59 7074 INIT_LIST_HEAD(&devlink->reporter_list);
0f420b6c
IS		 7075 INIT_LIST_HEAD(&devlink->trap_list);
7076 INIT_LIST_HEAD(&devlink->trap_group_list);
1e8c6619 7077 INIT_LIST_HEAD(&devlink->trap_policer_list);
2406e7e5 7078 mutex_init(&devlink->lock);
b587bdaf 7079 mutex_init(&devlink->reporters_lock);
bfcd3a46
JP		 7080 return devlink;
7081}
7082EXPORT_SYMBOL_GPL(devlink_alloc);
7083
7084/**
7085 * devlink_register - Register devlink instance
7086 *
7087 * @devlink: devlink
eeaadd82 7088 * @dev: parent device
bfcd3a46
JP		 7089 */
7090int devlink_register(struct devlink *devlink, struct device *dev)
7091{
7092 mutex_lock(&devlink_mutex);
7093 devlink->dev = dev;
8273fd84 7094 devlink->registered = true;
bfcd3a46
JP		 7095 list_add_tail(&devlink->list, &devlink_list);
7096 devlink_notify(devlink, DEVLINK_CMD_NEW);
7097 mutex_unlock(&devlink_mutex);
7098 return 0;
7099}
7100EXPORT_SYMBOL_GPL(devlink_register);
7101
7102/**
7103 * devlink_unregister - Unregister devlink instance
7104 *
7105 * @devlink: devlink
7106 */
7107void devlink_unregister(struct devlink *devlink)
7108{
7109 mutex_lock(&devlink_mutex);
a0c76345
JP		 7110 WARN_ON(devlink_reload_supported(devlink) &&
7111 devlink->reload_enabled);
bfcd3a46
JP		 7112 devlink_notify(devlink, DEVLINK_CMD_DEL);
7113 list_del(&devlink->list);
7114 mutex_unlock(&devlink_mutex);
7115}
7116EXPORT_SYMBOL_GPL(devlink_unregister);
7117
a0c76345
JP		 7118/**
7119 * devlink_reload_enable - Enable reload of devlink instance
7120 *
7121 * @devlink: devlink
7122 *
7123 * Should be called at end of device initialization
7124 * process when reload operation is supported.
7125 */
7126void devlink_reload_enable(struct devlink *devlink)
7127{
7128 mutex_lock(&devlink_mutex);
7129 devlink->reload_enabled = true;
7130 mutex_unlock(&devlink_mutex);
7131}
7132EXPORT_SYMBOL_GPL(devlink_reload_enable);
7133
7134/**
7135 * devlink_reload_disable - Disable reload of devlink instance
7136 *
7137 * @devlink: devlink
7138 *
7139 * Should be called at the beginning of device cleanup
7140 * process when reload operation is supported.
7141 */
7142void devlink_reload_disable(struct devlink *devlink)
7143{
7144 mutex_lock(&devlink_mutex);
7145 /* Mutex is taken which ensures that no reload operation is in
7146 * progress while setting up forbidded flag.
7147 */
7148 devlink->reload_enabled = false;
7149 mutex_unlock(&devlink_mutex);
7150}
7151EXPORT_SYMBOL_GPL(devlink_reload_disable);
7152
bfcd3a46
JP		 7153/**
7154 * devlink_free - Free devlink instance resources
7155 *
7156 * @devlink: devlink
7157 */
7158void devlink_free(struct devlink *devlink)
7159{
b587bdaf 7160 mutex_destroy(&devlink->reporters_lock);
375cf8c6 7161 mutex_destroy(&devlink->lock);
1e8c6619 7162 WARN_ON(!list_empty(&devlink->trap_policer_list));
0f420b6c
IS		 7163 WARN_ON(!list_empty(&devlink->trap_group_list));
7164 WARN_ON(!list_empty(&devlink->trap_list));
b904aada
PP		 7165 WARN_ON(!list_empty(&devlink->reporter_list));
7166 WARN_ON(!list_empty(&devlink->region_list));
7167 WARN_ON(!list_empty(&devlink->param_list));
7168 WARN_ON(!list_empty(&devlink->resource_list));
7169 WARN_ON(!list_empty(&devlink->dpipe_table_list));
7170 WARN_ON(!list_empty(&devlink->sb_list));
7171 WARN_ON(!list_empty(&devlink->port_list));
7172
12102436
JK		 7173 xa_destroy(&devlink->snapshot_ids);
7174
bfcd3a46
JP		 7175 kfree(devlink);
7176}
7177EXPORT_SYMBOL_GPL(devlink_free);
7178
136bf27f
JP		 7179static void devlink_port_type_warn(struct work_struct *work)
7180{
7181 WARN(true, "Type was not set for devlink port.");
7182}
7183
7184static bool devlink_port_type_should_warn(struct devlink_port *devlink_port)
7185{
7186 /* Ignore CPU and DSA flavours. */
7187 return devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_CPU &&
7188 devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_DSA;
7189}
7190
4c582234 7191#define DEVLINK_PORT_TYPE_WARN_TIMEOUT (HZ * 3600)
136bf27f
JP		 7192
7193static void devlink_port_type_warn_schedule(struct devlink_port *devlink_port)
7194{
7195 if (!devlink_port_type_should_warn(devlink_port))
7196 return;
7197 /* Schedule a work to WARN in case driver does not set port
7198 * type within timeout.
7199 */
7200 schedule_delayed_work(&devlink_port->type_warn_dw,
7201 DEVLINK_PORT_TYPE_WARN_TIMEOUT);
7202}
7203
7204static void devlink_port_type_warn_cancel(struct devlink_port *devlink_port)
7205{
7206 if (!devlink_port_type_should_warn(devlink_port))
7207 return;
7208 cancel_delayed_work_sync(&devlink_port->type_warn_dw);
7209}
7210
bfcd3a46
JP		 7211/**
7212 * devlink_port_register - Register devlink port
7213 *
7214 * @devlink: devlink
7215 * @devlink_port: devlink port
eeaadd82 7216 * @port_index: driver-specific numerical identifier of the port
bfcd3a46
JP		 7217 *
7218 * Register devlink port with provided port index. User can use
7219 * any indexing, even hw-related one. devlink_port structure
7220 * is convenient to be embedded inside user driver private structure.
7221 * Note that the caller should take care of zeroing the devlink_port
7222 * structure.
7223 */
7224int devlink_port_register(struct devlink *devlink,
7225 struct devlink_port *devlink_port,
7226 unsigned int port_index)
7227{
2406e7e5 7228 mutex_lock(&devlink->lock);
bfcd3a46 7229 if (devlink_port_index_exists(devlink, port_index)) {
2406e7e5 7230 mutex_unlock(&devlink->lock);
bfcd3a46
JP		 7231 return -EEXIST;
7232 }
7233 devlink_port->devlink = devlink;
7234 devlink_port->index = port_index;
bfcd3a46 7235 devlink_port->registered = true;
b8f97554 7236 spin_lock_init(&devlink_port->type_lock);
bfcd3a46 7237 list_add_tail(&devlink_port->list, &devlink->port_list);
39e6160e 7238 INIT_LIST_HEAD(&devlink_port->param_list);
2406e7e5 7239 mutex_unlock(&devlink->lock);
136bf27f
JP		 7240 INIT_DELAYED_WORK(&devlink_port->type_warn_dw, &devlink_port_type_warn);
7241 devlink_port_type_warn_schedule(devlink_port);
bfcd3a46
JP		 7242 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
7243 return 0;
7244}
7245EXPORT_SYMBOL_GPL(devlink_port_register);
7246
7247/**
7248 * devlink_port_unregister - Unregister devlink port
7249 *
7250 * @devlink_port: devlink port
7251 */
7252void devlink_port_unregister(struct devlink_port *devlink_port)
7253{
2406e7e5
AS		 7254 struct devlink *devlink = devlink_port->devlink;
7255
136bf27f 7256 devlink_port_type_warn_cancel(devlink_port);
bfcd3a46 7257 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
2406e7e5 7258 mutex_lock(&devlink->lock);
bfcd3a46 7259 list_del(&devlink_port->list);
2406e7e5 7260 mutex_unlock(&devlink->lock);
bfcd3a46
JP		 7261}
7262EXPORT_SYMBOL_GPL(devlink_port_unregister);
7263
7264static void __devlink_port_type_set(struct devlink_port *devlink_port,
7265 enum devlink_port_type type,
7266 void *type_dev)
7267{
2b239e70
JP		 7268 if (WARN_ON(!devlink_port->registered))
7269 return;
136bf27f 7270 devlink_port_type_warn_cancel(devlink_port);
0f420b6c 7271 spin_lock_bh(&devlink_port->type_lock);
bfcd3a46
JP		 7272 devlink_port->type = type;
7273 devlink_port->type_dev = type_dev;
0f420b6c 7274 spin_unlock_bh(&devlink_port->type_lock);
bfcd3a46
JP		 7275 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
7276}
7277
7278/**
7279 * devlink_port_type_eth_set - Set port type to Ethernet
7280 *
7281 * @devlink_port: devlink port
7282 * @netdev: related netdevice
7283 */
7284void devlink_port_type_eth_set(struct devlink_port *devlink_port,
7285 struct net_device *netdev)
7286{
119c0b57
JP		 7287 const struct net_device_ops *ops = netdev->netdev_ops;
7288
746364f2
JP		 7289 /* If driver registers devlink port, it should set devlink port
7290 * attributes accordingly so the compat functions are called
7291 * and the original ops are not used.
7292 */
119c0b57 7293 if (ops->ndo_get_phys_port_name) {
746364f2
JP		 7294 /* Some drivers use the same set of ndos for netdevs
7295 * that have devlink_port registered and also for
7296 * those who don't. Make sure that ndo_get_phys_port_name
7297 * returns -EOPNOTSUPP here in case it is defined.
7298 * Warn if not.
7299 */
746364f2
JP		 7300 char name[IFNAMSIZ];
7301 int err;
7302
7303 err = ops->ndo_get_phys_port_name(netdev, name, sizeof(name));
7304 WARN_ON(err != -EOPNOTSUPP);
7305 }
119c0b57
JP		 7306 if (ops->ndo_get_port_parent_id) {
7307 /* Some drivers use the same set of ndos for netdevs
7308 * that have devlink_port registered and also for
7309 * those who don't. Make sure that ndo_get_port_parent_id
7310 * returns -EOPNOTSUPP here in case it is defined.
7311 * Warn if not.
7312 */
7313 struct netdev_phys_item_id ppid;
7314 int err;
7315
7316 err = ops->ndo_get_port_parent_id(netdev, &ppid);
7317 WARN_ON(err != -EOPNOTSUPP);
7318 }
773b1f38 7319 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH, netdev);
bfcd3a46
JP		 7320}
7321EXPORT_SYMBOL_GPL(devlink_port_type_eth_set);
7322
7323/**
7324 * devlink_port_type_ib_set - Set port type to InfiniBand
7325 *
7326 * @devlink_port: devlink port
7327 * @ibdev: related IB device
7328 */
7329void devlink_port_type_ib_set(struct devlink_port *devlink_port,
7330 struct ib_device *ibdev)
7331{
773b1f38 7332 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_IB, ibdev);
bfcd3a46
JP		 7333}
7334EXPORT_SYMBOL_GPL(devlink_port_type_ib_set);
7335
7336/**
7337 * devlink_port_type_clear - Clear port type
7338 *
7339 * @devlink_port: devlink port
7340 */
7341void devlink_port_type_clear(struct devlink_port *devlink_port)
7342{
773b1f38 7343 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET, NULL);
136bf27f 7344 devlink_port_type_warn_schedule(devlink_port);
bfcd3a46
JP		 7345}
7346EXPORT_SYMBOL_GPL(devlink_port_type_clear);
7347
378ef01b
PP		 7348static int __devlink_port_attrs_set(struct devlink_port *devlink_port,
7349 enum devlink_port_flavour flavour,
7350 const unsigned char *switch_id,
7351 unsigned char switch_id_len)
7352{
7353 struct devlink_port_attrs *attrs = &devlink_port->attrs;
7354
7355 if (WARN_ON(devlink_port->registered))
7356 return -EEXIST;
7357 attrs->set = true;
7358 attrs->flavour = flavour;
7359 if (switch_id) {
7360 attrs->switch_port = true;
7361 if (WARN_ON(switch_id_len > MAX_PHYS_ITEM_ID_LEN))
7362 switch_id_len = MAX_PHYS_ITEM_ID_LEN;
7363 memcpy(attrs->switch_id.id, switch_id, switch_id_len);
7364 attrs->switch_id.id_len = switch_id_len;
7365 } else {
7366 attrs->switch_port = false;
7367 }
7368 return 0;
7369}
7370
bfcd3a46 7371/**
b9ffcbaf 7372 * devlink_port_attrs_set - Set port attributes
bfcd3a46
JP		 7373 *
7374 * @devlink_port: devlink port
5ec1380a 7375 * @flavour: flavour of the port
b9ffcbaf
JP		 7376 * @port_number: number of the port that is facing user, for example
7377 * the front panel port number
7378 * @split: indicates if this is split port
7379 * @split_subport_number: if the port is split, this is the number
7380 * of subport.
bec5267c
JP		 7381 * @switch_id: if the port is part of switch, this is buffer with ID,
7382 * otwerwise this is NULL
7383 * @switch_id_len: length of the switch_id buffer
bfcd3a46 7384 */
b9ffcbaf 7385void devlink_port_attrs_set(struct devlink_port *devlink_port,
5ec1380a 7386 enum devlink_port_flavour flavour,
b9ffcbaf 7387 u32 port_number, bool split,
bec5267c
JP		 7388 u32 split_subport_number,
7389 const unsigned char *switch_id,
7390 unsigned char switch_id_len)
bfcd3a46 7391{
b9ffcbaf 7392 struct devlink_port_attrs *attrs = &devlink_port->attrs;
378ef01b 7393 int ret;
b9ffcbaf 7394
378ef01b
PP		 7395 ret = __devlink_port_attrs_set(devlink_port, flavour,
7396 switch_id, switch_id_len);
7397 if (ret)
45b86112 7398 return;
b9ffcbaf 7399 attrs->split = split;
378ef01b
PP		 7400 attrs->phys.port_number = port_number;
7401 attrs->phys.split_subport_number = split_subport_number;
bfcd3a46 7402}
b9ffcbaf 7403EXPORT_SYMBOL_GPL(devlink_port_attrs_set);
bfcd3a46 7404
98fd2d65
PP		 7405/**
7406 * devlink_port_attrs_pci_pf_set - Set PCI PF port attributes
7407 *
7408 * @devlink_port: devlink port
7409 * @pf: associated PF for the devlink port instance
7410 * @switch_id: if the port is part of switch, this is buffer with ID,
7411 * otherwise this is NULL
7412 * @switch_id_len: length of the switch_id buffer
7413 */
7414void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port,
7415 const unsigned char *switch_id,
7416 unsigned char switch_id_len, u16 pf)
7417{
7418 struct devlink_port_attrs *attrs = &devlink_port->attrs;
7419 int ret;
7420
7421 ret = __devlink_port_attrs_set(devlink_port,
7422 DEVLINK_PORT_FLAVOUR_PCI_PF,
7423 switch_id, switch_id_len);
7424 if (ret)
7425 return;
7426
7427 attrs->pci_pf.pf = pf;
7428}
7429EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_pf_set);
7430
e41b6bf3
PP		 7431/**
7432 * devlink_port_attrs_pci_vf_set - Set PCI VF port attributes
7433 *
7434 * @devlink_port: devlink port
7435 * @pf: associated PF for the devlink port instance
7436 * @vf: associated VF of a PF for the devlink port instance
7437 * @switch_id: if the port is part of switch, this is buffer with ID,
7438 * otherwise this is NULL
7439 * @switch_id_len: length of the switch_id buffer
7440 */
7441void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port,
7442 const unsigned char *switch_id,
7443 unsigned char switch_id_len,
7444 u16 pf, u16 vf)
7445{
7446 struct devlink_port_attrs *attrs = &devlink_port->attrs;
7447 int ret;
7448
7449 ret = __devlink_port_attrs_set(devlink_port,
7450 DEVLINK_PORT_FLAVOUR_PCI_VF,
7451 switch_id, switch_id_len);
7452 if (ret)
7453 return;
7454 attrs->pci_vf.pf = pf;
7455 attrs->pci_vf.vf = vf;
7456}
7457EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_vf_set);
7458
af3836df
JP		 7459static int __devlink_port_phys_port_name_get(struct devlink_port *devlink_port,
7460 char *name, size_t len)
08474c1a
JP		 7461{
7462 struct devlink_port_attrs *attrs = &devlink_port->attrs;
7463 int n = 0;
7464
7465 if (!attrs->set)
7466 return -EOPNOTSUPP;
7467
7468 switch (attrs->flavour) {
7469 case DEVLINK_PORT_FLAVOUR_PHYSICAL:
acf1ee44 7470 case DEVLINK_PORT_FLAVOUR_VIRTUAL:
08474c1a 7471 if (!attrs->split)
378ef01b 7472 n = snprintf(name, len, "p%u", attrs->phys.port_number);
08474c1a 7473 else
378ef01b
PP		 7474 n = snprintf(name, len, "p%us%u",
7475 attrs->phys.port_number,
7476 attrs->phys.split_subport_number);
08474c1a
JP		 7477 break;
7478 case DEVLINK_PORT_FLAVOUR_CPU:
7479 case DEVLINK_PORT_FLAVOUR_DSA:
7480 /* As CPU and DSA ports do not have a netdevice associated
7481 * case should not ever happen.
7482 */
7483 WARN_ON(1);
7484 return -EINVAL;
98fd2d65
PP		 7485 case DEVLINK_PORT_FLAVOUR_PCI_PF:
7486 n = snprintf(name, len, "pf%u", attrs->pci_pf.pf);
7487 break;
e41b6bf3
PP		 7488 case DEVLINK_PORT_FLAVOUR_PCI_VF:
7489 n = snprintf(name, len, "pf%uvf%u",
7490 attrs->pci_vf.pf, attrs->pci_vf.vf);
7491 break;
08474c1a
JP		 7492 }
7493
7494 if (n >= len)
7495 return -EINVAL;
7496
7497 return 0;
7498}
af3836df 7499
bf797471
JP		 7500int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
7501 u32 size, u16 ingress_pools_count,
7502 u16 egress_pools_count, u16 ingress_tc_count,
7503 u16 egress_tc_count)
7504{
7505 struct devlink_sb *devlink_sb;
7506 int err = 0;
7507
2406e7e5 7508 mutex_lock(&devlink->lock);
bf797471
JP		 7509 if (devlink_sb_index_exists(devlink, sb_index)) {
7510 err = -EEXIST;
7511 goto unlock;
7512 }
7513
7514 devlink_sb = kzalloc(sizeof(*devlink_sb), GFP_KERNEL);
7515 if (!devlink_sb) {
7516 err = -ENOMEM;
7517 goto unlock;
7518 }
7519 devlink_sb->index = sb_index;
7520 devlink_sb->size = size;
7521 devlink_sb->ingress_pools_count = ingress_pools_count;
7522 devlink_sb->egress_pools_count = egress_pools_count;
7523 devlink_sb->ingress_tc_count = ingress_tc_count;
7524 devlink_sb->egress_tc_count = egress_tc_count;
7525 list_add_tail(&devlink_sb->list, &devlink->sb_list);
7526unlock:
2406e7e5 7527 mutex_unlock(&devlink->lock);
bf797471
JP		 7528 return err;
7529}
7530EXPORT_SYMBOL_GPL(devlink_sb_register);
7531
7532void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index)
7533{
7534 struct devlink_sb *devlink_sb;
7535
2406e7e5 7536 mutex_lock(&devlink->lock);
bf797471
JP		 7537 devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
7538 WARN_ON(!devlink_sb);
7539 list_del(&devlink_sb->list);
2406e7e5 7540 mutex_unlock(&devlink->lock);
bf797471
JP		 7541 kfree(devlink_sb);
7542}
7543EXPORT_SYMBOL_GPL(devlink_sb_unregister);
7544
1555d204
AS		 7545/**
7546 * devlink_dpipe_headers_register - register dpipe headers
7547 *
7548 * @devlink: devlink
7549 * @dpipe_headers: dpipe header array
7550 *
7551 * Register the headers supported by hardware.
7552 */
7553int devlink_dpipe_headers_register(struct devlink *devlink,
7554 struct devlink_dpipe_headers *dpipe_headers)
7555{
2406e7e5 7556 mutex_lock(&devlink->lock);
1555d204 7557 devlink->dpipe_headers = dpipe_headers;
2406e7e5 7558 mutex_unlock(&devlink->lock);
1555d204
AS		 7559 return 0;
7560}
7561EXPORT_SYMBOL_GPL(devlink_dpipe_headers_register);
7562
7563/**
7564 * devlink_dpipe_headers_unregister - unregister dpipe headers
7565 *
7566 * @devlink: devlink
7567 *
7568 * Unregister the headers supported by hardware.
7569 */
7570void devlink_dpipe_headers_unregister(struct devlink *devlink)
7571{
2406e7e5 7572 mutex_lock(&devlink->lock);
1555d204 7573 devlink->dpipe_headers = NULL;
2406e7e5 7574 mutex_unlock(&devlink->lock);
1555d204
AS		 7575}
7576EXPORT_SYMBOL_GPL(devlink_dpipe_headers_unregister);
7577
7578/**
7579 * devlink_dpipe_table_counter_enabled - check if counter allocation
7580 * required
7581 * @devlink: devlink
7582 * @table_name: tables name
7583 *
7584 * Used by driver to check if counter allocation is required.
7585 * After counter allocation is turned on the table entries
7586 * are updated to include counter statistics.
7587 *
7588 * After that point on the driver must respect the counter
7589 * state so that each entry added to the table is added
7590 * with a counter.
7591 */
7592bool devlink_dpipe_table_counter_enabled(struct devlink *devlink,
7593 const char *table_name)
7594{
7595 struct devlink_dpipe_table *table;
7596 bool enabled;
7597
7598 rcu_read_lock();
7599 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2eb51c75 7600 table_name, devlink);
1555d204
AS		 7601 enabled = false;
7602 if (table)
7603 enabled = table->counters_enabled;
7604 rcu_read_unlock();
7605 return enabled;
7606}
7607EXPORT_SYMBOL_GPL(devlink_dpipe_table_counter_enabled);
7608
7609/**
7610 * devlink_dpipe_table_register - register dpipe table
7611 *
7612 * @devlink: devlink
7613 * @table_name: table name
7614 * @table_ops: table ops
7615 * @priv: priv
1555d204
AS		 7616 * @counter_control_extern: external control for counters
7617 */
7618int devlink_dpipe_table_register(struct devlink *devlink,
7619 const char *table_name,
7620 struct devlink_dpipe_table_ops *table_ops,
ffd3cdcc 7621 void *priv, bool counter_control_extern)
1555d204
AS		 7622{
7623 struct devlink_dpipe_table *table;
6132c1d9 7624 int err = 0;
1555d204 7625
ffd3cdcc
AS		 7626 if (WARN_ON(!table_ops->size_get))
7627 return -EINVAL;
7628
6132c1d9
MB		 7629 mutex_lock(&devlink->lock);
7630
2eb51c75
MB		 7631 if (devlink_dpipe_table_find(&devlink->dpipe_table_list, table_name,
7632 devlink)) {
6132c1d9
MB		 7633 err = -EEXIST;
7634 goto unlock;
7635 }
7636
1555d204 7637 table = kzalloc(sizeof(*table), GFP_KERNEL);
6132c1d9
MB		 7638 if (!table) {
7639 err = -ENOMEM;
7640 goto unlock;
7641 }
1555d204
AS		 7642
7643 table->name = table_name;
7644 table->table_ops = table_ops;
7645 table->priv = priv;
1555d204
AS		 7646 table->counter_control_extern = counter_control_extern;
7647
1555d204 7648 list_add_tail_rcu(&table->list, &devlink->dpipe_table_list);
6132c1d9 7649unlock:
2406e7e5 7650 mutex_unlock(&devlink->lock);
6132c1d9 7651 return err;
1555d204
AS		 7652}
7653EXPORT_SYMBOL_GPL(devlink_dpipe_table_register);
7654
7655/**
7656 * devlink_dpipe_table_unregister - unregister dpipe table
7657 *
7658 * @devlink: devlink
7659 * @table_name: table name
7660 */
7661void devlink_dpipe_table_unregister(struct devlink *devlink,
7662 const char *table_name)
7663{
7664 struct devlink_dpipe_table *table;
7665
2406e7e5 7666 mutex_lock(&devlink->lock);
1555d204 7667 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2eb51c75 7668 table_name, devlink);
1555d204
AS		 7669 if (!table)
7670 goto unlock;
7671 list_del_rcu(&table->list);
2406e7e5 7672 mutex_unlock(&devlink->lock);
1555d204
AS		 7673 kfree_rcu(table, rcu);
7674 return;
7675unlock:
2406e7e5 7676 mutex_unlock(&devlink->lock);
1555d204
AS		 7677}
7678EXPORT_SYMBOL_GPL(devlink_dpipe_table_unregister);
7679
d9f9b9a4
AS		 7680/**
7681 * devlink_resource_register - devlink resource register
7682 *
7683 * @devlink: devlink
7684 * @resource_name: resource's name
d9f9b9a4
AS		 7685 * @resource_size: resource's size
7686 * @resource_id: resource's id
eeaadd82
JK		 7687 * @parent_resource_id: resource's parent id
7688 * @size_params: size parameters
d9f9b9a4
AS		 7689 */
7690int devlink_resource_register(struct devlink *devlink,
7691 const char *resource_name,
d9f9b9a4
AS		 7692 u64 resource_size,
7693 u64 resource_id,
7694 u64 parent_resource_id,
fc56be47 7695 const struct devlink_resource_size_params *size_params)
d9f9b9a4
AS		 7696{
7697 struct devlink_resource *resource;
7698 struct list_head *resource_list;
14530746 7699 bool top_hierarchy;
d9f9b9a4
AS		 7700 int err = 0;
7701
14530746
DA		 7702 top_hierarchy = parent_resource_id == DEVLINK_RESOURCE_ID_PARENT_TOP;
7703
d9f9b9a4
AS		 7704 mutex_lock(&devlink->lock);
7705 resource = devlink_resource_find(devlink, NULL, resource_id);
7706 if (resource) {
7707 err = -EINVAL;
7708 goto out;
7709 }
7710
7711 resource = kzalloc(sizeof(*resource), GFP_KERNEL);
7712 if (!resource) {
7713 err = -ENOMEM;
7714 goto out;
7715 }
7716
7717 if (top_hierarchy) {
7718 resource_list = &devlink->resource_list;
7719 } else {
7720 struct devlink_resource *parent_resource;
7721
7722 parent_resource = devlink_resource_find(devlink, NULL,
7723 parent_resource_id);
7724 if (parent_resource) {
7725 resource_list = &parent_resource->resource_list;
7726 resource->parent = parent_resource;
7727 } else {
b75703de 7728 kfree(resource);
d9f9b9a4
AS		 7729 err = -EINVAL;
7730 goto out;
7731 }
7732 }
7733
7734 resource->name = resource_name;
7735 resource->size = resource_size;
7736 resource->size_new = resource_size;
7737 resource->id = resource_id;
d9f9b9a4 7738 resource->size_valid = true;
77d27096
JP		 7739 memcpy(&resource->size_params, size_params,
7740 sizeof(resource->size_params));
d9f9b9a4
AS		 7741 INIT_LIST_HEAD(&resource->resource_list);
7742 list_add_tail(&resource->list, resource_list);
7743out:
7744 mutex_unlock(&devlink->lock);
7745 return err;
7746}
7747EXPORT_SYMBOL_GPL(devlink_resource_register);
7748
7749/**
7750 * devlink_resources_unregister - free all resources
7751 *
7752 * @devlink: devlink
7753 * @resource: resource
7754 */
7755void devlink_resources_unregister(struct devlink *devlink,
7756 struct devlink_resource *resource)
7757{
7758 struct devlink_resource *tmp, *child_resource;
7759 struct list_head *resource_list;
7760
7761 if (resource)
7762 resource_list = &resource->resource_list;
7763 else
7764 resource_list = &devlink->resource_list;
7765
7766 if (!resource)
7767 mutex_lock(&devlink->lock);
7768
7769 list_for_each_entry_safe(child_resource, tmp, resource_list, list) {
7770 devlink_resources_unregister(devlink, child_resource);
7771 list_del(&child_resource->list);
7772 kfree(child_resource);
7773 }
7774
7775 if (!resource)
7776 mutex_unlock(&devlink->lock);
7777}
7778EXPORT_SYMBOL_GPL(devlink_resources_unregister);
7779
7780/**
7781 * devlink_resource_size_get - get and update size
7782 *
7783 * @devlink: devlink
7784 * @resource_id: the requested resource id
7785 * @p_resource_size: ptr to update
7786 */
7787int devlink_resource_size_get(struct devlink *devlink,
7788 u64 resource_id,
7789 u64 *p_resource_size)
7790{
7791 struct devlink_resource *resource;
7792 int err = 0;
7793
7794 mutex_lock(&devlink->lock);
7795 resource = devlink_resource_find(devlink, NULL, resource_id);
7796 if (!resource) {
7797 err = -EINVAL;
7798 goto out;
7799 }
7800 *p_resource_size = resource->size_new;
7801 resource->size = resource->size_new;
7802out:
7803 mutex_unlock(&devlink->lock);
7804 return err;
7805}
7806EXPORT_SYMBOL_GPL(devlink_resource_size_get);
7807
56dc7cd0
AS		 7808/**
7809 * devlink_dpipe_table_resource_set - set the resource id
7810 *
7811 * @devlink: devlink
7812 * @table_name: table name
7813 * @resource_id: resource id
7814 * @resource_units: number of resource's units consumed per table's entry
7815 */
7816int devlink_dpipe_table_resource_set(struct devlink *devlink,
7817 const char *table_name, u64 resource_id,
7818 u64 resource_units)
7819{
7820 struct devlink_dpipe_table *table;
7821 int err = 0;
7822
7823 mutex_lock(&devlink->lock);
7824 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2eb51c75 7825 table_name, devlink);
56dc7cd0
AS		 7826 if (!table) {
7827 err = -EINVAL;
7828 goto out;
7829 }
7830 table->resource_id = resource_id;
7831 table->resource_units = resource_units;
7832 table->resource_valid = true;
7833out:
7834 mutex_unlock(&devlink->lock);
7835 return err;
7836}
7837EXPORT_SYMBOL_GPL(devlink_dpipe_table_resource_set);
7838
fc56be47
JP		 7839/**
7840 * devlink_resource_occ_get_register - register occupancy getter
7841 *
7842 * @devlink: devlink
7843 * @resource_id: resource id
7844 * @occ_get: occupancy getter callback
7845 * @occ_get_priv: occupancy getter callback priv
7846 */
7847void devlink_resource_occ_get_register(struct devlink *devlink,
7848 u64 resource_id,
7849 devlink_resource_occ_get_t *occ_get,
7850 void *occ_get_priv)
7851{
7852 struct devlink_resource *resource;
7853
7854 mutex_lock(&devlink->lock);
7855 resource = devlink_resource_find(devlink, NULL, resource_id);
7856 if (WARN_ON(!resource))
7857 goto out;
7858 WARN_ON(resource->occ_get);
7859
7860 resource->occ_get = occ_get;
7861 resource->occ_get_priv = occ_get_priv;
7862out:
7863 mutex_unlock(&devlink->lock);
7864}
7865EXPORT_SYMBOL_GPL(devlink_resource_occ_get_register);
7866
7867/**
7868 * devlink_resource_occ_get_unregister - unregister occupancy getter
7869 *
7870 * @devlink: devlink
7871 * @resource_id: resource id
7872 */
7873void devlink_resource_occ_get_unregister(struct devlink *devlink,
7874 u64 resource_id)
7875{
7876 struct devlink_resource *resource;
7877
7878 mutex_lock(&devlink->lock);
7879 resource = devlink_resource_find(devlink, NULL, resource_id);
7880 if (WARN_ON(!resource))
7881 goto out;
7882 WARN_ON(!resource->occ_get);
7883
7884 resource->occ_get = NULL;
7885 resource->occ_get_priv = NULL;
7886out:
7887 mutex_unlock(&devlink->lock);
7888}
7889EXPORT_SYMBOL_GPL(devlink_resource_occ_get_unregister);
7890
39e6160e
VV		 7891static int devlink_param_verify(const struct devlink_param *param)
7892{
7893 if (!param || !param->name || !param->supported_cmodes)
7894 return -EINVAL;
7895 if (param->generic)
7896 return devlink_param_generic_verify(param);
7897 else
7898 return devlink_param_driver_verify(param);
7899}
7900
7901static int __devlink_params_register(struct devlink *devlink,
c1e5786d 7902 unsigned int port_index,
39e6160e
VV		 7903 struct list_head *param_list,
7904 const struct devlink_param *params,
c1e5786d
VV		 7905 size_t params_count,
7906 enum devlink_command reg_cmd,
7907 enum devlink_command unreg_cmd)
eabaef18
MS		 7908{
7909 const struct devlink_param *param = params;
7910 int i;
7911 int err;
7912
7913 mutex_lock(&devlink->lock);
7914 for (i = 0; i < params_count; i++, param++) {
39e6160e
VV		 7915 err = devlink_param_verify(param);
7916 if (err)
eabaef18 7917 goto rollback;
39e6160e 7918
c1e5786d
VV		 7919 err = devlink_param_register_one(devlink, port_index,
7920 param_list, param, reg_cmd);
eabaef18
MS		 7921 if (err)
7922 goto rollback;
7923 }
7924
7925 mutex_unlock(&devlink->lock);
7926 return 0;
7927
7928rollback:
7929 if (!i)
7930 goto unlock;
7931 for (param--; i > 0; i--, param--)
c1e5786d
VV		 7932 devlink_param_unregister_one(devlink, port_index, param_list,
7933 param, unreg_cmd);
eabaef18
MS		 7934unlock:
7935 mutex_unlock(&devlink->lock);
7936 return err;
7937}
39e6160e
VV		 7938
7939static void __devlink_params_unregister(struct devlink *devlink,
c1e5786d 7940 unsigned int port_index,
39e6160e
VV		 7941 struct list_head *param_list,
7942 const struct devlink_param *params,
c1e5786d
VV		 7943 size_t params_count,
7944 enum devlink_command cmd)
39e6160e
VV		 7945{
7946 const struct devlink_param *param = params;
7947 int i;
7948
7949 mutex_lock(&devlink->lock);
7950 for (i = 0; i < params_count; i++, param++)
c1e5786d
VV		 7951 devlink_param_unregister_one(devlink, 0, param_list, param,
7952 cmd);
39e6160e
VV		 7953 mutex_unlock(&devlink->lock);
7954}
7955
7956/**
7957 * devlink_params_register - register configuration parameters
7958 *
7959 * @devlink: devlink
7960 * @params: configuration parameters array
7961 * @params_count: number of parameters provided
7962 *
7963 * Register the configuration parameters supported by the driver.
7964 */
7965int devlink_params_register(struct devlink *devlink,
7966 const struct devlink_param *params,
7967 size_t params_count)
7968{
c1e5786d
VV		 7969 return __devlink_params_register(devlink, 0, &devlink->param_list,
7970 params, params_count,
7971 DEVLINK_CMD_PARAM_NEW,
7972 DEVLINK_CMD_PARAM_DEL);
39e6160e 7973}
eabaef18
MS		 7974EXPORT_SYMBOL_GPL(devlink_params_register);
7975
7976/**
7977 * devlink_params_unregister - unregister configuration parameters
7978 * @devlink: devlink
7979 * @params: configuration parameters to unregister
7980 * @params_count: number of parameters provided
7981 */
7982void devlink_params_unregister(struct devlink *devlink,
7983 const struct devlink_param *params,
7984 size_t params_count)
7985{
c1e5786d
VV		 7986 return __devlink_params_unregister(devlink, 0, &devlink->param_list,
7987 params, params_count,
7988 DEVLINK_CMD_PARAM_DEL);
eabaef18
MS		 7989}
7990EXPORT_SYMBOL_GPL(devlink_params_unregister);
7991
7c62cfb8
JP		 7992/**
7993 * devlink_params_publish - publish configuration parameters
7994 *
7995 * @devlink: devlink
7996 *
7997 * Publish previously registered configuration parameters.
7998 */
7999void devlink_params_publish(struct devlink *devlink)
8000{
8001 struct devlink_param_item *param_item;
8002
8003 list_for_each_entry(param_item, &devlink->param_list, list) {
8004 if (param_item->published)
8005 continue;
8006 param_item->published = true;
8007 devlink_param_notify(devlink, 0, param_item,
8008 DEVLINK_CMD_PARAM_NEW);
8009 }
8010}
8011EXPORT_SYMBOL_GPL(devlink_params_publish);
8012
8013/**
8014 * devlink_params_unpublish - unpublish configuration parameters
8015 *
8016 * @devlink: devlink
8017 *
8018 * Unpublish previously registered configuration parameters.
8019 */
8020void devlink_params_unpublish(struct devlink *devlink)
8021{
8022 struct devlink_param_item *param_item;
8023
8024 list_for_each_entry(param_item, &devlink->param_list, list) {
8025 if (!param_item->published)
8026 continue;
8027 param_item->published = false;
8028 devlink_param_notify(devlink, 0, param_item,
8029 DEVLINK_CMD_PARAM_DEL);
8030 }
8031}
8032EXPORT_SYMBOL_GPL(devlink_params_unpublish);
8033
39e6160e
VV		 8034/**
8035 * devlink_port_params_register - register port configuration parameters
8036 *
8037 * @devlink_port: devlink port
8038 * @params: configuration parameters array
8039 * @params_count: number of parameters provided
8040 *
8041 * Register the configuration parameters supported by the port.
8042 */
8043int devlink_port_params_register(struct devlink_port *devlink_port,
8044 const struct devlink_param *params,
8045 size_t params_count)
8046{
8047 return __devlink_params_register(devlink_port->devlink,
c1e5786d 8048 devlink_port->index,
39e6160e 8049 &devlink_port->param_list, params,
c1e5786d
VV		 8050 params_count,
8051 DEVLINK_CMD_PORT_PARAM_NEW,
8052 DEVLINK_CMD_PORT_PARAM_DEL);
39e6160e
VV		 8053}
8054EXPORT_SYMBOL_GPL(devlink_port_params_register);
8055
8056/**
8057 * devlink_port_params_unregister - unregister port configuration
8058 * parameters
8059 *
8060 * @devlink_port: devlink port
8061 * @params: configuration parameters array
8062 * @params_count: number of parameters provided
8063 */
8064void devlink_port_params_unregister(struct devlink_port *devlink_port,
8065 const struct devlink_param *params,
8066 size_t params_count)
8067{
8068 return __devlink_params_unregister(devlink_port->devlink,
c1e5786d 8069 devlink_port->index,
39e6160e 8070 &devlink_port->param_list,
c1e5786d
VV		 8071 params, params_count,
8072 DEVLINK_CMD_PORT_PARAM_DEL);
39e6160e
VV		 8073}
8074EXPORT_SYMBOL_GPL(devlink_port_params_unregister);
8075
ffd19b9a
VV		 8076static int
8077__devlink_param_driverinit_value_get(struct list_head *param_list, u32 param_id,
8078 union devlink_param_value *init_val)
ec01aeb1
MS		 8079{
8080 struct devlink_param_item *param_item;
8081
ffd19b9a 8082 param_item = devlink_param_find_by_id(param_list, param_id);
ec01aeb1
MS		 8083 if (!param_item)
8084 return -EINVAL;
8085
8086 if (!param_item->driverinit_value_valid ||
8087 !devlink_param_cmode_is_supported(param_item->param,
8088 DEVLINK_PARAM_CMODE_DRIVERINIT))
8089 return -EOPNOTSUPP;
8090
1276534c
MS		 8091 if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
8092 strcpy(init_val->vstr, param_item->driverinit_value.vstr);
8093 else
8094 *init_val = param_item->driverinit_value;
ec01aeb1
MS		 8095
8096 return 0;
8097}
ffd19b9a 8098
5473a7bd
VV		 8099static int
8100__devlink_param_driverinit_value_set(struct devlink *devlink,
c1e5786d 8101 unsigned int port_index,
5473a7bd
VV		 8102 struct list_head *param_list, u32 param_id,
8103 union devlink_param_value init_val,
8104 enum devlink_command cmd)
8105{
8106 struct devlink_param_item *param_item;
8107
8108 param_item = devlink_param_find_by_id(param_list, param_id);
8109 if (!param_item)
8110 return -EINVAL;
8111
8112 if (!devlink_param_cmode_is_supported(param_item->param,
8113 DEVLINK_PARAM_CMODE_DRIVERINIT))
8114 return -EOPNOTSUPP;
8115
8116 if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
8117 strcpy(param_item->driverinit_value.vstr, init_val.vstr);
8118 else
8119 param_item->driverinit_value = init_val;
8120 param_item->driverinit_value_valid = true;
8121
c1e5786d 8122 devlink_param_notify(devlink, port_index, param_item, cmd);
5473a7bd
VV		 8123 return 0;
8124}
8125
ffd19b9a
VV		 8126/**
8127 * devlink_param_driverinit_value_get - get configuration parameter
8128 * value for driver initializing
8129 *
8130 * @devlink: devlink
8131 * @param_id: parameter ID
8132 * @init_val: value of parameter in driverinit configuration mode
8133 *
8134 * This function should be used by the driver to get driverinit
8135 * configuration for initialization after reload command.
8136 */
8137int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
8138 union devlink_param_value *init_val)
8139{
97691069 8140 if (!devlink_reload_supported(devlink))
ffd19b9a
VV		 8141 return -EOPNOTSUPP;
8142
8143 return __devlink_param_driverinit_value_get(&devlink->param_list,
8144 param_id, init_val);
8145}
ec01aeb1
MS		 8146EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_get);
8147
8148/**
8149 * devlink_param_driverinit_value_set - set value of configuration
8150 * parameter for driverinit
8151 * configuration mode
8152 *
8153 * @devlink: devlink
8154 * @param_id: parameter ID
8155 * @init_val: value of parameter to set for driverinit configuration mode
8156 *
8157 * This function should be used by the driver to set driverinit
8158 * configuration mode default value.
8159 */
8160int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
8161 union devlink_param_value init_val)
8162{
c1e5786d 8163 return __devlink_param_driverinit_value_set(devlink, 0,
5473a7bd
VV		 8164 &devlink->param_list,
8165 param_id, init_val,
8166 DEVLINK_CMD_PARAM_NEW);
ec01aeb1
MS		 8167}
8168EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_set);
8169
ffd19b9a
VV		 8170/**
8171 * devlink_port_param_driverinit_value_get - get configuration parameter
8172 * value for driver initializing
8173 *
8174 * @devlink_port: devlink_port
8175 * @param_id: parameter ID
8176 * @init_val: value of parameter in driverinit configuration mode
8177 *
8178 * This function should be used by the driver to get driverinit
8179 * configuration for initialization after reload command.
8180 */
8181int devlink_port_param_driverinit_value_get(struct devlink_port *devlink_port,
8182 u32 param_id,
8183 union devlink_param_value *init_val)
8184{
8185 struct devlink *devlink = devlink_port->devlink;
8186
97691069 8187 if (!devlink_reload_supported(devlink))
ffd19b9a
VV		 8188 return -EOPNOTSUPP;
8189
8190 return __devlink_param_driverinit_value_get(&devlink_port->param_list,
8191 param_id, init_val);
8192}
8193EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_get);
8194
5473a7bd
VV		 8195/**
8196 * devlink_port_param_driverinit_value_set - set value of configuration
8197 * parameter for driverinit
8198 * configuration mode
8199 *
8200 * @devlink_port: devlink_port
8201 * @param_id: parameter ID
8202 * @init_val: value of parameter to set for driverinit configuration mode
8203 *
8204 * This function should be used by the driver to set driverinit
8205 * configuration mode default value.
8206 */
8207int devlink_port_param_driverinit_value_set(struct devlink_port *devlink_port,
8208 u32 param_id,
8209 union devlink_param_value init_val)
8210{
8211 return __devlink_param_driverinit_value_set(devlink_port->devlink,
c1e5786d 8212 devlink_port->index,
5473a7bd 8213 &devlink_port->param_list,
c1e5786d
VV		 8214 param_id, init_val,
8215 DEVLINK_CMD_PORT_PARAM_NEW);
5473a7bd
VV		 8216}
8217EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_set);
8218
ea601e17
MS		 8219/**
8220 * devlink_param_value_changed - notify devlink on a parameter's value
8221 * change. Should be called by the driver
8222 * right after the change.
8223 *
8224 * @devlink: devlink
8225 * @param_id: parameter ID
8226 *
8227 * This function should be used by the driver to notify devlink on value
8228 * change, excluding driverinit configuration mode.
8229 * For driverinit configuration mode driver should use the function
ea601e17
MS		 8230 */
8231void devlink_param_value_changed(struct devlink *devlink, u32 param_id)
8232{
8233 struct devlink_param_item *param_item;
8234
8235 param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
8236 WARN_ON(!param_item);
8237
c1e5786d 8238 devlink_param_notify(devlink, 0, param_item, DEVLINK_CMD_PARAM_NEW);
ea601e17
MS		 8239}
8240EXPORT_SYMBOL_GPL(devlink_param_value_changed);
8241
c1e5786d
VV		 8242/**
8243 * devlink_port_param_value_changed - notify devlink on a parameter's value
8244 * change. Should be called by the driver
8245 * right after the change.
8246 *
8247 * @devlink_port: devlink_port
8248 * @param_id: parameter ID
8249 *
8250 * This function should be used by the driver to notify devlink on value
8251 * change, excluding driverinit configuration mode.
8252 * For driverinit configuration mode driver should use the function
8253 * devlink_port_param_driverinit_value_set() instead.
8254 */
8255void devlink_port_param_value_changed(struct devlink_port *devlink_port,
8256 u32 param_id)
8257{
8258 struct devlink_param_item *param_item;
8259
8260 param_item = devlink_param_find_by_id(&devlink_port->param_list,
8261 param_id);
8262 WARN_ON(!param_item);
8263
8264 devlink_param_notify(devlink_port->devlink, devlink_port->index,
8265 param_item, DEVLINK_CMD_PORT_PARAM_NEW);
8266}
8267EXPORT_SYMBOL_GPL(devlink_port_param_value_changed);
8268
bde74ad1
MS		 8269/**
8270 * devlink_param_value_str_fill - Safely fill-up the string preventing
8271 * from overflow of the preallocated buffer
8272 *
8273 * @dst_val: destination devlink_param_value
8274 * @src: source buffer
8275 */
8276void devlink_param_value_str_fill(union devlink_param_value *dst_val,
8277 const char *src)
8278{
8279 size_t len;
8280
8281 len = strlcpy(dst_val->vstr, src, __DEVLINK_PARAM_MAX_STRING_VALUE);
8282 WARN_ON(len >= __DEVLINK_PARAM_MAX_STRING_VALUE);
8283}
8284EXPORT_SYMBOL_GPL(devlink_param_value_str_fill);
8285
b16ebe92
AV		 8286/**
8287 * devlink_region_create - create a new address region
8288 *
8289 * @devlink: devlink
e8937681 8290 * @ops: region operations and name
b16ebe92
AV		 8291 * @region_max_snapshots: Maximum supported number of snapshots for region
8292 * @region_size: size of region
8293 */
e8937681
JK		 8294struct devlink_region *
8295devlink_region_create(struct devlink *devlink,
8296 const struct devlink_region_ops *ops,
8297 u32 region_max_snapshots, u64 region_size)
b16ebe92
AV		 8298{
8299 struct devlink_region *region;
8300 int err = 0;
8301
a0a09f6b
JK		 8302 if (WARN_ON(!ops) || WARN_ON(!ops->destructor))
8303 return ERR_PTR(-EINVAL);
8304
b16ebe92
AV		 8305 mutex_lock(&devlink->lock);
8306
e8937681 8307 if (devlink_region_get_by_name(devlink, ops->name)) {
b16ebe92
AV		 8308 err = -EEXIST;
8309 goto unlock;
8310 }
8311
8312 region = kzalloc(sizeof(*region), GFP_KERNEL);
8313 if (!region) {
8314 err = -ENOMEM;
8315 goto unlock;
8316 }
8317
8318 region->devlink = devlink;
8319 region->max_snapshots = region_max_snapshots;
e8937681 8320 region->ops = ops;
b16ebe92
AV		 8321 region->size = region_size;
8322 INIT_LIST_HEAD(&region->snapshot_list);
8323 list_add_tail(&region->list, &devlink->region_list);
866319bb 8324 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
b16ebe92
AV		 8325
8326 mutex_unlock(&devlink->lock);
8327 return region;
8328
8329unlock:
8330 mutex_unlock(&devlink->lock);
8331 return ERR_PTR(err);
8332}
8333EXPORT_SYMBOL_GPL(devlink_region_create);
8334
8335/**
8336 * devlink_region_destroy - destroy address region
8337 *
8338 * @region: devlink region to destroy
8339 */
8340void devlink_region_destroy(struct devlink_region *region)
8341{
8342 struct devlink *devlink = region->devlink;
d7e52722 8343 struct devlink_snapshot *snapshot, *ts;
b16ebe92
AV		 8344
8345 mutex_lock(&devlink->lock);
d7e52722
AV		 8346
8347 /* Free all snapshots of region */
8348 list_for_each_entry_safe(snapshot, ts, &region->snapshot_list, list)
92b49822 8349 devlink_region_snapshot_del(region, snapshot);
d7e52722 8350
b16ebe92 8351 list_del(&region->list);
866319bb
AV		 8352
8353 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL);
b16ebe92
AV		 8354 mutex_unlock(&devlink->lock);
8355 kfree(region);
8356}
8357EXPORT_SYMBOL_GPL(devlink_region_destroy);
8358
ccadfa44 8359/**
b0efcae5 8360 * devlink_region_snapshot_id_get - get snapshot ID
ccadfa44
AV		 8361 *
8362 * This callback should be called when adding a new snapshot,
8363 * Driver should use the same id for multiple snapshots taken
8364 * on multiple regions at the same time/by the same trigger.
8365 *
12102436
JK		 8366 * The caller of this function must use devlink_region_snapshot_id_put
8367 * when finished creating regions using this id.
8368 *
7ef19d3b
JK		 8369 * Returns zero on success, or a negative error code on failure.
8370 *
ccadfa44 8371 * @devlink: devlink
7ef19d3b 8372 * @id: storage to return id
ccadfa44 8373 */
7ef19d3b 8374int devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id)
ccadfa44 8375{
7ef19d3b 8376 int err;
ccadfa44
AV		 8377
8378 mutex_lock(&devlink->lock);
7ef19d3b 8379 err = __devlink_region_snapshot_id_get(devlink, id);
ccadfa44
AV		 8380 mutex_unlock(&devlink->lock);
8381
7ef19d3b 8382 return err;
ccadfa44 8383}
b0efcae5 8384EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_get);
ccadfa44 8385
12102436
JK		 8386/**
8387 * devlink_region_snapshot_id_put - put snapshot ID reference
8388 *
8389 * This should be called by a driver after finishing creating snapshots
8390 * with an id. Doing so ensures that the ID can later be released in the
8391 * event that all snapshots using it have been destroyed.
8392 *
8393 * @devlink: devlink
8394 * @id: id to release reference on
8395 */
8396void devlink_region_snapshot_id_put(struct devlink *devlink, u32 id)
8397{
8398 mutex_lock(&devlink->lock);
8399 __devlink_snapshot_id_decrement(devlink, id);
8400 mutex_unlock(&devlink->lock);
8401}
8402EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_put);
8403
d7e52722
AV		 8404/**
8405 * devlink_region_snapshot_create - create a new snapshot
8406 * This will add a new snapshot of a region. The snapshot
8407 * will be stored on the region struct and can be accessed
6d82f67e 8408 * from devlink. This is useful for future analyses of snapshots.
d7e52722
AV		 8409 * Multiple snapshots can be created on a region.
8410 * The @snapshot_id should be obtained using the getter function.
8411 *
eeaadd82 8412 * @region: devlink region of the snapshot
d7e52722
AV		 8413 * @data: snapshot data
8414 * @snapshot_id: snapshot id to be created
d7e52722 8415 */
3a5e5234 8416int devlink_region_snapshot_create(struct devlink_region *region,
a0a09f6b 8417 u8 *data, u32 snapshot_id)
d7e52722
AV		 8418{
8419 struct devlink *devlink = region->devlink;
d7e52722
AV		 8420 int err;
8421
8422 mutex_lock(&devlink->lock);
cf80faee 8423 err = __devlink_region_snapshot_create(region, data, snapshot_id);
d7e52722 8424 mutex_unlock(&devlink->lock);
d7e52722 8425
d7e52722
AV		 8426 return err;
8427}
8428EXPORT_SYMBOL_GPL(devlink_region_snapshot_create);
8429
0f420b6c
IS		 8430#define DEVLINK_TRAP(_id, _type) \
8431 { \
8432 .type = DEVLINK_TRAP_TYPE_##_type, \
8433 .id = DEVLINK_TRAP_GENERIC_ID_##_id, \
8434 .name = DEVLINK_TRAP_GENERIC_NAME_##_id, \
8435 }
8436
8437static const struct devlink_trap devlink_trap_generic[] = {
391203ab
IS		 8438 DEVLINK_TRAP(SMAC_MC, DROP),
8439 DEVLINK_TRAP(VLAN_TAG_MISMATCH, DROP),
8440 DEVLINK_TRAP(INGRESS_VLAN_FILTER, DROP),
8441 DEVLINK_TRAP(INGRESS_STP_FILTER, DROP),
8442 DEVLINK_TRAP(EMPTY_TX_LIST, DROP),
8443 DEVLINK_TRAP(PORT_LOOPBACK_FILTER, DROP),
8444 DEVLINK_TRAP(BLACKHOLE_ROUTE, DROP),
8445 DEVLINK_TRAP(TTL_ERROR, EXCEPTION),
8446 DEVLINK_TRAP(TAIL_DROP, DROP),
6896cc4d
AC		 8447 DEVLINK_TRAP(NON_IP_PACKET, DROP),
8448 DEVLINK_TRAP(UC_DIP_MC_DMAC, DROP),
8449 DEVLINK_TRAP(DIP_LB, DROP),
8450 DEVLINK_TRAP(SIP_MC, DROP),
8451 DEVLINK_TRAP(SIP_LB, DROP),
8452 DEVLINK_TRAP(CORRUPTED_IP_HDR, DROP),
8453 DEVLINK_TRAP(IPV4_SIP_BC, DROP),
8454 DEVLINK_TRAP(IPV6_MC_DIP_RESERVED_SCOPE, DROP),
8455 DEVLINK_TRAP(IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE, DROP),
3b063ae5
AC		 8456 DEVLINK_TRAP(MTU_ERROR, EXCEPTION),
8457 DEVLINK_TRAP(UNRESOLVED_NEIGH, EXCEPTION),
8458 DEVLINK_TRAP(RPF, EXCEPTION),
8459 DEVLINK_TRAP(REJECT_ROUTE, EXCEPTION),
8460 DEVLINK_TRAP(IPV4_LPM_UNICAST_MISS, EXCEPTION),
8461 DEVLINK_TRAP(IPV6_LPM_UNICAST_MISS, EXCEPTION),
95f0ead8 8462 DEVLINK_TRAP(NON_ROUTABLE, DROP),
13c056ec 8463 DEVLINK_TRAP(DECAP_ERROR, EXCEPTION),
c3cae491 8464 DEVLINK_TRAP(OVERLAY_SMAC_MC, DROP),
ecd942a0
JP		 8465 DEVLINK_TRAP(INGRESS_FLOW_ACTION_DROP, DROP),
8466 DEVLINK_TRAP(EGRESS_FLOW_ACTION_DROP, DROP),
0f420b6c
IS		 8467};
8468
8469#define DEVLINK_TRAP_GROUP(_id) \
8470 { \
8471 .id = DEVLINK_TRAP_GROUP_GENERIC_ID_##_id, \
8472 .name = DEVLINK_TRAP_GROUP_GENERIC_NAME_##_id, \
8473 }
8474
8475static const struct devlink_trap_group devlink_trap_group_generic[] = {
391203ab
IS		 8476 DEVLINK_TRAP_GROUP(L2_DROPS),
8477 DEVLINK_TRAP_GROUP(L3_DROPS),
8478 DEVLINK_TRAP_GROUP(BUFFER_DROPS),
13c056ec 8479 DEVLINK_TRAP_GROUP(TUNNEL_DROPS),
ecd942a0 8480 DEVLINK_TRAP_GROUP(ACL_DROPS),
0f420b6c
IS		 8481};
8482
8483static int devlink_trap_generic_verify(const struct devlink_trap *trap)
8484{
8485 if (trap->id > DEVLINK_TRAP_GENERIC_ID_MAX)
8486 return -EINVAL;
8487
8488 if (strcmp(trap->name, devlink_trap_generic[trap->id].name))
8489 return -EINVAL;
8490
8491 if (trap->type != devlink_trap_generic[trap->id].type)
8492 return -EINVAL;
8493
8494 return 0;
8495}
8496
8497static int devlink_trap_driver_verify(const struct devlink_trap *trap)
8498{
8499 int i;
8500
8501 if (trap->id <= DEVLINK_TRAP_GENERIC_ID_MAX)
8502 return -EINVAL;
8503
8504 for (i = 0; i < ARRAY_SIZE(devlink_trap_generic); i++) {
8505 if (!strcmp(trap->name, devlink_trap_generic[i].name))
8506 return -EEXIST;
8507 }
8508
8509 return 0;
8510}
8511
8512static int devlink_trap_verify(const struct devlink_trap *trap)
8513{
107f1678 8514 if (!trap || !trap->name)
0f420b6c
IS		 8515 return -EINVAL;
8516
8517 if (trap->generic)
8518 return devlink_trap_generic_verify(trap);
8519 else
8520 return devlink_trap_driver_verify(trap);
8521}
8522
8523static int
8524devlink_trap_group_generic_verify(const struct devlink_trap_group *group)
8525{
8526 if (group->id > DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
8527 return -EINVAL;
8528
8529 if (strcmp(group->name, devlink_trap_group_generic[group->id].name))
8530 return -EINVAL;
8531
8532 return 0;
8533}
8534
8535static int
8536devlink_trap_group_driver_verify(const struct devlink_trap_group *group)
8537{
8538 int i;
8539
8540 if (group->id <= DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
8541 return -EINVAL;
8542
8543 for (i = 0; i < ARRAY_SIZE(devlink_trap_group_generic); i++) {
8544 if (!strcmp(group->name, devlink_trap_group_generic[i].name))
8545 return -EEXIST;
8546 }
8547
8548 return 0;
8549}
8550
8551static int devlink_trap_group_verify(const struct devlink_trap_group *group)
8552{
8553 if (group->generic)
8554 return devlink_trap_group_generic_verify(group);
8555 else
8556 return devlink_trap_group_driver_verify(group);
8557}
8558
8559static void
8560devlink_trap_group_notify(struct devlink *devlink,
8561 const struct devlink_trap_group_item *group_item,
8562 enum devlink_command cmd)
8563{
8564 struct sk_buff *msg;
8565 int err;
8566
8567 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_GROUP_NEW &&
8568 cmd != DEVLINK_CMD_TRAP_GROUP_DEL);
8569
8570 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8571 if (!msg)
8572 return;
8573
8574 err = devlink_nl_trap_group_fill(msg, devlink, group_item, cmd, 0, 0,
8575 0);
8576 if (err) {
8577 nlmsg_free(msg);
8578 return;
8579 }
8580
8581 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
8582 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
8583}
8584
0f420b6c
IS		 8585static int
8586devlink_trap_item_group_link(struct devlink *devlink,
8587 struct devlink_trap_item *trap_item)
8588{
107f1678 8589 u16 group_id = trap_item->trap->init_group_id;
0f420b6c
IS		 8590 struct devlink_trap_group_item *group_item;
8591
107f1678 8592 group_item = devlink_trap_group_item_lookup_by_id(devlink, group_id);
a09b37fc
IS		 8593 if (WARN_ON_ONCE(!group_item))
8594 return -EINVAL;
0f420b6c
IS		 8595
8596 trap_item->group_item = group_item;
8597
8598 return 0;
8599}
8600
0f420b6c
IS		 8601static void devlink_trap_notify(struct devlink *devlink,
8602 const struct devlink_trap_item *trap_item,
8603 enum devlink_command cmd)
8604{
8605 struct sk_buff *msg;
8606 int err;
8607
8608 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_NEW &&
8609 cmd != DEVLINK_CMD_TRAP_DEL);
8610
8611 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8612 if (!msg)
8613 return;
8614
8615 err = devlink_nl_trap_fill(msg, devlink, trap_item, cmd, 0, 0, 0);
8616 if (err) {
8617 nlmsg_free(msg);
8618 return;
8619 }
8620
8621 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
8622 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
8623}
8624
8625static int
8626devlink_trap_register(struct devlink *devlink,
8627 const struct devlink_trap *trap, void *priv)
8628{
8629 struct devlink_trap_item *trap_item;
8630 int err;
8631
8632 if (devlink_trap_item_lookup(devlink, trap->name))
8633 return -EEXIST;
8634
8635 trap_item = kzalloc(sizeof(*trap_item), GFP_KERNEL);
8636 if (!trap_item)
8637 return -ENOMEM;
8638
8639 trap_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
8640 if (!trap_item->stats) {
8641 err = -ENOMEM;
8642 goto err_stats_alloc;
8643 }
8644
8645 trap_item->trap = trap;
8646 trap_item->action = trap->init_action;
8647 trap_item->priv = priv;
8648
8649 err = devlink_trap_item_group_link(devlink, trap_item);
8650 if (err)
8651 goto err_group_link;
8652
8653 err = devlink->ops->trap_init(devlink, trap, trap_item);
8654 if (err)
8655 goto err_trap_init;
8656
8657 list_add_tail(&trap_item->list, &devlink->trap_list);
8658 devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_NEW);
8659
8660 return 0;
8661
8662err_trap_init:
0f420b6c
IS		 8663err_group_link:
8664 free_percpu(trap_item->stats);
8665err_stats_alloc:
8666 kfree(trap_item);
8667 return err;
8668}
8669
8670static void devlink_trap_unregister(struct devlink *devlink,
8671 const struct devlink_trap *trap)
8672{
8673 struct devlink_trap_item *trap_item;
8674
8675 trap_item = devlink_trap_item_lookup(devlink, trap->name);
8676 if (WARN_ON_ONCE(!trap_item))
8677 return;
8678
8679 devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_DEL);
8680 list_del(&trap_item->list);
8681 if (devlink->ops->trap_fini)
8682 devlink->ops->trap_fini(devlink, trap, trap_item);
0f420b6c
IS		 8683 free_percpu(trap_item->stats);
8684 kfree(trap_item);
8685}
8686
8687static void devlink_trap_disable(struct devlink *devlink,
8688 const struct devlink_trap *trap)
8689{
8690 struct devlink_trap_item *trap_item;
8691
8692 trap_item = devlink_trap_item_lookup(devlink, trap->name);
8693 if (WARN_ON_ONCE(!trap_item))
8694 return;
8695
8696 devlink->ops->trap_action_set(devlink, trap, DEVLINK_TRAP_ACTION_DROP);
8697 trap_item->action = DEVLINK_TRAP_ACTION_DROP;
8698}
8699
8700/**
8701 * devlink_traps_register - Register packet traps with devlink.
8702 * @devlink: devlink.
8703 * @traps: Packet traps.
8704 * @traps_count: Count of provided packet traps.
8705 * @priv: Driver private information.
8706 *
8707 * Return: Non-zero value on failure.
8708 */
8709int devlink_traps_register(struct devlink *devlink,
8710 const struct devlink_trap *traps,
8711 size_t traps_count, void *priv)
8712{
8713 int i, err;
8714
8715 if (!devlink->ops->trap_init || !devlink->ops->trap_action_set)
8716 return -EINVAL;
8717
8718 mutex_lock(&devlink->lock);
8719 for (i = 0; i < traps_count; i++) {
8720 const struct devlink_trap *trap = &traps[i];
8721
8722 err = devlink_trap_verify(trap);
8723 if (err)
8724 goto err_trap_verify;
8725
8726 err = devlink_trap_register(devlink, trap, priv);
8727 if (err)
8728 goto err_trap_register;
8729 }
8730 mutex_unlock(&devlink->lock);
8731
8732 return 0;
8733
8734err_trap_register:
8735err_trap_verify:
8736 for (i--; i >= 0; i--)
8737 devlink_trap_unregister(devlink, &traps[i]);
8738 mutex_unlock(&devlink->lock);
8739 return err;
8740}
8741EXPORT_SYMBOL_GPL(devlink_traps_register);
8742
8743/**
8744 * devlink_traps_unregister - Unregister packet traps from devlink.
8745 * @devlink: devlink.
8746 * @traps: Packet traps.
8747 * @traps_count: Count of provided packet traps.
8748 */
8749void devlink_traps_unregister(struct devlink *devlink,
8750 const struct devlink_trap *traps,
8751 size_t traps_count)
8752{
8753 int i;
8754
8755 mutex_lock(&devlink->lock);
8756 /* Make sure we do not have any packets in-flight while unregistering
8757 * traps by disabling all of them and waiting for a grace period.
8758 */
8759 for (i = traps_count - 1; i >= 0; i--)
8760 devlink_trap_disable(devlink, &traps[i]);
8761 synchronize_rcu();
8762 for (i = traps_count - 1; i >= 0; i--)
8763 devlink_trap_unregister(devlink, &traps[i]);
8764 mutex_unlock(&devlink->lock);
8765}
8766EXPORT_SYMBOL_GPL(devlink_traps_unregister);
8767
8768static void
8769devlink_trap_stats_update(struct devlink_stats __percpu *trap_stats,
8770 size_t skb_len)
8771{
8772 struct devlink_stats *stats;
8773
8774 stats = this_cpu_ptr(trap_stats);
8775 u64_stats_update_begin(&stats->syncp);
8776 stats->rx_bytes += skb_len;
8777 stats->rx_packets++;
8778 u64_stats_update_end(&stats->syncp);
8779}
8780
8781static void
8782devlink_trap_report_metadata_fill(struct net_dm_hw_metadata *hw_metadata,
8783 const struct devlink_trap_item *trap_item,
5a2e106c
JP		 8784 struct devlink_port *in_devlink_port,
8785 const struct flow_action_cookie *fa_cookie)
0f420b6c
IS		 8786{
8787 struct devlink_trap_group_item *group_item = trap_item->group_item;
8788
8789 hw_metadata->trap_group_name = group_item->group->name;
8790 hw_metadata->trap_name = trap_item->trap->name;
5a2e106c 8791 hw_metadata->fa_cookie = fa_cookie;
0f420b6c
IS		 8792
8793 spin_lock(&in_devlink_port->type_lock);
8794 if (in_devlink_port->type == DEVLINK_PORT_TYPE_ETH)
8795 hw_metadata->input_dev = in_devlink_port->type_dev;
8796 spin_unlock(&in_devlink_port->type_lock);
8797}
8798
8799/**
8800 * devlink_trap_report - Report trapped packet to drop monitor.
8801 * @devlink: devlink.
8802 * @skb: Trapped packet.
8803 * @trap_ctx: Trap context.
8804 * @in_devlink_port: Input devlink port.
5a2e106c 8805 * @fa_cookie: Flow action cookie. Could be NULL.
0f420b6c
IS		 8806 */
8807void devlink_trap_report(struct devlink *devlink, struct sk_buff *skb,
5a2e106c
JP		 8808 void *trap_ctx, struct devlink_port *in_devlink_port,
8809 const struct flow_action_cookie *fa_cookie)
8810
0f420b6c
IS		 8811{
8812 struct devlink_trap_item *trap_item = trap_ctx;
8813 struct net_dm_hw_metadata hw_metadata = {};
8814
8815 devlink_trap_stats_update(trap_item->stats, skb->len);
8816 devlink_trap_stats_update(trap_item->group_item->stats, skb->len);
8817
8818 devlink_trap_report_metadata_fill(&hw_metadata, trap_item,
5a2e106c 8819 in_devlink_port, fa_cookie);
0f420b6c
IS		 8820 net_dm_hw_report(skb, &hw_metadata);
8821}
8822EXPORT_SYMBOL_GPL(devlink_trap_report);
8823
8824/**
8825 * devlink_trap_ctx_priv - Trap context to driver private information.
8826 * @trap_ctx: Trap context.
8827 *
8828 * Return: Driver private information passed during registration.
8829 */
8830void *devlink_trap_ctx_priv(void *trap_ctx)
8831{
8832 struct devlink_trap_item *trap_item = trap_ctx;
8833
8834 return trap_item->priv;
8835}
8836EXPORT_SYMBOL_GPL(devlink_trap_ctx_priv);
8837
f9f54392
IS		 8838static int
8839devlink_trap_group_item_policer_link(struct devlink *devlink,
8840 struct devlink_trap_group_item *group_item)
8841{
8842 u32 policer_id = group_item->group->init_policer_id;
8843 struct devlink_trap_policer_item *policer_item;
8844
8845 if (policer_id == 0)
8846 return 0;
8847
8848 policer_item = devlink_trap_policer_item_lookup(devlink, policer_id);
8849 if (WARN_ON_ONCE(!policer_item))
8850 return -EINVAL;
8851
8852 group_item->policer_item = policer_item;
8853
8854 return 0;
8855}
8856
95ad9555
IS		 8857static int
8858devlink_trap_group_register(struct devlink *devlink,
8859 const struct devlink_trap_group *group)
8860{
8861 struct devlink_trap_group_item *group_item;
8862 int err;
8863
8864 if (devlink_trap_group_item_lookup(devlink, group->name))
8865 return -EEXIST;
8866
8867 group_item = kzalloc(sizeof(*group_item), GFP_KERNEL);
8868 if (!group_item)
8869 return -ENOMEM;
8870
8871 group_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
8872 if (!group_item->stats) {
8873 err = -ENOMEM;
8874 goto err_stats_alloc;
8875 }
8876
8877 group_item->group = group;
95ad9555 8878
f9f54392
IS		 8879 err = devlink_trap_group_item_policer_link(devlink, group_item);
8880 if (err)
8881 goto err_policer_link;
8882
95ad9555
IS		 8883 if (devlink->ops->trap_group_init) {
8884 err = devlink->ops->trap_group_init(devlink, group);
8885 if (err)
8886 goto err_group_init;
8887 }
8888
8889 list_add_tail(&group_item->list, &devlink->trap_group_list);
8890 devlink_trap_group_notify(devlink, group_item,
8891 DEVLINK_CMD_TRAP_GROUP_NEW);
8892
8893 return 0;
8894
8895err_group_init:
f9f54392 8896err_policer_link:
95ad9555
IS		 8897 free_percpu(group_item->stats);
8898err_stats_alloc:
8899 kfree(group_item);
8900 return err;
8901}
8902
8903static void
8904devlink_trap_group_unregister(struct devlink *devlink,
8905 const struct devlink_trap_group *group)
8906{
8907 struct devlink_trap_group_item *group_item;
8908
8909 group_item = devlink_trap_group_item_lookup(devlink, group->name);
8910 if (WARN_ON_ONCE(!group_item))
8911 return;
8912
8913 devlink_trap_group_notify(devlink, group_item,
8914 DEVLINK_CMD_TRAP_GROUP_DEL);
8915 list_del(&group_item->list);
8916 free_percpu(group_item->stats);
8917 kfree(group_item);
8918}
8919
8920/**
8921 * devlink_trap_groups_register - Register packet trap groups with devlink.
8922 * @devlink: devlink.
8923 * @groups: Packet trap groups.
8924 * @groups_count: Count of provided packet trap groups.
8925 *
8926 * Return: Non-zero value on failure.
8927 */
8928int devlink_trap_groups_register(struct devlink *devlink,
8929 const struct devlink_trap_group *groups,
8930 size_t groups_count)
8931{
8932 int i, err;
8933
8934 mutex_lock(&devlink->lock);
8935 for (i = 0; i < groups_count; i++) {
8936 const struct devlink_trap_group *group = &groups[i];
8937
8938 err = devlink_trap_group_verify(group);
8939 if (err)
8940 goto err_trap_group_verify;
8941
8942 err = devlink_trap_group_register(devlink, group);
8943 if (err)
8944 goto err_trap_group_register;
8945 }
8946 mutex_unlock(&devlink->lock);
8947
8948 return 0;
8949
8950err_trap_group_register:
8951err_trap_group_verify:
8952 for (i--; i >= 0; i--)
8953 devlink_trap_group_unregister(devlink, &groups[i]);
8954 mutex_unlock(&devlink->lock);
8955 return err;
8956}
8957EXPORT_SYMBOL_GPL(devlink_trap_groups_register);
8958
8959/**
8960 * devlink_trap_groups_unregister - Unregister packet trap groups from devlink.
8961 * @devlink: devlink.
8962 * @groups: Packet trap groups.
8963 * @groups_count: Count of provided packet trap groups.
8964 */
8965void devlink_trap_groups_unregister(struct devlink *devlink,
8966 const struct devlink_trap_group *groups,
8967 size_t groups_count)
8968{
8969 int i;
8970
8971 mutex_lock(&devlink->lock);
8972 for (i = groups_count - 1; i >= 0; i--)
8973 devlink_trap_group_unregister(devlink, &groups[i]);
8974 mutex_unlock(&devlink->lock);
8975}
8976EXPORT_SYMBOL_GPL(devlink_trap_groups_unregister);
8977
1e8c6619
IS		 8978static void
8979devlink_trap_policer_notify(struct devlink *devlink,
8980 const struct devlink_trap_policer_item *policer_item,
8981 enum devlink_command cmd)
8982{
8983 struct sk_buff *msg;
8984 int err;
8985
8986 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_POLICER_NEW &&
8987 cmd != DEVLINK_CMD_TRAP_POLICER_DEL);
8988
8989 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8990 if (!msg)
8991 return;
8992
8993 err = devlink_nl_trap_policer_fill(msg, devlink, policer_item, cmd, 0,
8994 0, 0);
8995 if (err) {
8996 nlmsg_free(msg);
8997 return;
8998 }
8999
9000 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
9001 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
9002}
9003
9004static int
9005devlink_trap_policer_register(struct devlink *devlink,
9006 const struct devlink_trap_policer *policer)
9007{
9008 struct devlink_trap_policer_item *policer_item;
9009 int err;
9010
9011 if (devlink_trap_policer_item_lookup(devlink, policer->id))
9012 return -EEXIST;
9013
9014 policer_item = kzalloc(sizeof(*policer_item), GFP_KERNEL);
9015 if (!policer_item)
9016 return -ENOMEM;
9017
9018 policer_item->policer = policer;
9019 policer_item->rate = policer->init_rate;
9020 policer_item->burst = policer->init_burst;
9021
9022 if (devlink->ops->trap_policer_init) {
9023 err = devlink->ops->trap_policer_init(devlink, policer);
9024 if (err)
9025 goto err_policer_init;
9026 }
9027
9028 list_add_tail(&policer_item->list, &devlink->trap_policer_list);
9029 devlink_trap_policer_notify(devlink, policer_item,
9030 DEVLINK_CMD_TRAP_POLICER_NEW);
9031
9032 return 0;
9033
9034err_policer_init:
9035 kfree(policer_item);
9036 return err;
9037}
9038
9039static void
9040devlink_trap_policer_unregister(struct devlink *devlink,
9041 const struct devlink_trap_policer *policer)
9042{
9043 struct devlink_trap_policer_item *policer_item;
9044
9045 policer_item = devlink_trap_policer_item_lookup(devlink, policer->id);
9046 if (WARN_ON_ONCE(!policer_item))
9047 return;
9048
9049 devlink_trap_policer_notify(devlink, policer_item,
9050 DEVLINK_CMD_TRAP_POLICER_DEL);
9051 list_del(&policer_item->list);
9052 if (devlink->ops->trap_policer_fini)
9053 devlink->ops->trap_policer_fini(devlink, policer);
9054 kfree(policer_item);
9055}
9056
9057/**
9058 * devlink_trap_policers_register - Register packet trap policers with devlink.
9059 * @devlink: devlink.
9060 * @policers: Packet trap policers.
9061 * @policers_count: Count of provided packet trap policers.
9062 *
9063 * Return: Non-zero value on failure.
9064 */
9065int
9066devlink_trap_policers_register(struct devlink *devlink,
9067 const struct devlink_trap_policer *policers,
9068 size_t policers_count)
9069{
9070 int i, err;
9071
9072 mutex_lock(&devlink->lock);
9073 for (i = 0; i < policers_count; i++) {
9074 const struct devlink_trap_policer *policer = &policers[i];
9075
9076 if (WARN_ON(policer->id == 0 ||
9077 policer->max_rate < policer->min_rate ||
9078 policer->max_burst < policer->min_burst)) {
9079 err = -EINVAL;
9080 goto err_trap_policer_verify;
9081 }
9082
9083 err = devlink_trap_policer_register(devlink, policer);
9084 if (err)
9085 goto err_trap_policer_register;
9086 }
9087 mutex_unlock(&devlink->lock);
9088
9089 return 0;
9090
9091err_trap_policer_register:
9092err_trap_policer_verify:
9093 for (i--; i >= 0; i--)
9094 devlink_trap_policer_unregister(devlink, &policers[i]);
9095 mutex_unlock(&devlink->lock);
9096 return err;
9097}
9098EXPORT_SYMBOL_GPL(devlink_trap_policers_register);
9099
9100/**
9101 * devlink_trap_policers_unregister - Unregister packet trap policers from devlink.
9102 * @devlink: devlink.
9103 * @policers: Packet trap policers.
9104 * @policers_count: Count of provided packet trap policers.
9105 */
9106void
9107devlink_trap_policers_unregister(struct devlink *devlink,
9108 const struct devlink_trap_policer *policers,
9109 size_t policers_count)
9110{
9111 int i;
9112
9113 mutex_lock(&devlink->lock);
9114 for (i = policers_count - 1; i >= 0; i--)
9115 devlink_trap_policer_unregister(devlink, &policers[i]);
9116 mutex_unlock(&devlink->lock);
9117}
9118EXPORT_SYMBOL_GPL(devlink_trap_policers_unregister);
9119
ddb6e99e
JK		 9120static void __devlink_compat_running_version(struct devlink *devlink,
9121 char *buf, size_t len)
9122{
9123 const struct nlattr *nlattr;
9124 struct devlink_info_req req;
9125 struct sk_buff *msg;
9126 int rem, err;
9127
ddb6e99e
JK		 9128 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9129 if (!msg)
9130 return;
9131
9132 req.msg = msg;
9133 err = devlink->ops->info_get(devlink, &req, NULL);
9134 if (err)
9135 goto free_msg;
9136
9137 nla_for_each_attr(nlattr, (void *)msg->data, msg->len, rem) {
9138 const struct nlattr *kv;
9139 int rem_kv;
9140
9141 if (nla_type(nlattr) != DEVLINK_ATTR_INFO_VERSION_RUNNING)
9142 continue;
9143
9144 nla_for_each_nested(kv, nlattr, rem_kv) {
9145 if (nla_type(kv) != DEVLINK_ATTR_INFO_VERSION_VALUE)
9146 continue;
9147
9148 strlcat(buf, nla_data(kv), len);
9149 strlcat(buf, " ", len);
9150 }
9151 }
9152free_msg:
9153 nlmsg_free(msg);
9154}
9155
9156void devlink_compat_running_version(struct net_device *dev,
9157 char *buf, size_t len)
9158{
ddb6e99e
JK		 9159 struct devlink *devlink;
9160
1b45ff6c
JK		 9161 dev_hold(dev);
9162 rtnl_unlock();
9163
b473b0d2 9164 devlink = netdev_to_devlink(dev);
be6fe1d8 9165 if (!devlink || !devlink->ops->info_get)
e0dcd386 9166 goto out;
b473b0d2
JK		 9167
9168 mutex_lock(&devlink->lock);
9169 __devlink_compat_running_version(devlink, buf, len);
9170 mutex_unlock(&devlink->lock);
1b45ff6c 9171
e0dcd386 9172out:
1b45ff6c
JK		 9173 rtnl_lock();
9174 dev_put(dev);
ddb6e99e
JK		 9175}
9176
4eceba17
JK		 9177int devlink_compat_flash_update(struct net_device *dev, const char *file_name)
9178{
4eceba17 9179 struct devlink *devlink;
e0dcd386 9180 int ret;
4eceba17 9181
1b45ff6c
JK		 9182 dev_hold(dev);
9183 rtnl_unlock();
9184
b473b0d2 9185 devlink = netdev_to_devlink(dev);
e0dcd386
JP		 9186 if (!devlink || !devlink->ops->flash_update) {
9187 ret = -EOPNOTSUPP;
9188 goto out;
9189 }
4eceba17 9190
b473b0d2
JK		 9191 mutex_lock(&devlink->lock);
9192 ret = devlink->ops->flash_update(devlink, file_name, NULL, NULL);
9193 mutex_unlock(&devlink->lock);
1b45ff6c 9194
e0dcd386 9195out:
1b45ff6c
JK		 9196 rtnl_lock();
9197 dev_put(dev);
9198
b473b0d2 9199 return ret;
4eceba17
JK		 9200}
9201
af3836df
JP		 9202int devlink_compat_phys_port_name_get(struct net_device *dev,
9203 char *name, size_t len)
9204{
9205 struct devlink_port *devlink_port;
9206
9207 /* RTNL mutex is held here which ensures that devlink_port
9208 * instance cannot disappear in the middle. No need to take
9209 * any devlink lock as only permanent values are accessed.
9210 */
9211 ASSERT_RTNL();
9212
9213 devlink_port = netdev_to_devlink_port(dev);
9214 if (!devlink_port)
9215 return -EOPNOTSUPP;
9216
9217 return __devlink_port_phys_port_name_get(devlink_port, name, len);
9218}
9219
7e1146e8
JP		 9220int devlink_compat_switch_id_get(struct net_device *dev,
9221 struct netdev_phys_item_id *ppid)
9222{
9223 struct devlink_port *devlink_port;
9224
043b8413
VB		 9225 /* Caller must hold RTNL mutex or reference to dev, which ensures that
9226 * devlink_port instance cannot disappear in the middle. No need to take
7e1146e8
JP		 9227 * any devlink lock as only permanent values are accessed.
9228 */
7e1146e8
JP		 9229 devlink_port = netdev_to_devlink_port(dev);
9230 if (!devlink_port || !devlink_port->attrs.switch_port)
9231 return -EOPNOTSUPP;
9232
9233 memcpy(ppid, &devlink_port->attrs.switch_id, sizeof(*ppid));
9234
9235 return 0;
9236}
9237
070c63f2
JP		 9238static void __net_exit devlink_pernet_pre_exit(struct net *net)
9239{
9240 struct devlink *devlink;
9241 int err;
9242
9243 /* In case network namespace is getting destroyed, reload
9244 * all devlink instances from this namespace into init_net.
9245 */
9246 mutex_lock(&devlink_mutex);
9247 list_for_each_entry(devlink, &devlink_list, list) {
9248 if (net_eq(devlink_net(devlink), net)) {
9249 if (WARN_ON(!devlink_reload_supported(devlink)))
9250 continue;
9251 err = devlink_reload(devlink, &init_net, NULL);
a0c76345 9252 if (err && err != -EOPNOTSUPP)
070c63f2
JP		 9253 pr_warn("Failed to reload devlink instance into init_net\n");
9254 }
9255 }
9256 mutex_unlock(&devlink_mutex);
9257}
9258
9259static struct pernet_operations devlink_pernet_ops __net_initdata = {
9260 .pre_exit = devlink_pernet_pre_exit,
9261};
9262
f4b6bcc7 9263static int __init devlink_init(void)
bfcd3a46 9264{
070c63f2
JP		 9265 int err;
9266
9267 err = genl_register_family(&devlink_nl_family);
9268 if (err)
9269 goto out;
9270 err = register_pernet_subsys(&devlink_pernet_ops);
9271
9272out:
9273 WARN_ON(err);
9274 return err;
bfcd3a46
JP		 9275}
9276
f4b6bcc7 9277subsys_initcall(devlink_init);
Linux 6.x block layer and io_uring tree(s)