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netdevsim: Add devlink-trap policer support
[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
866319bb
AV		 3719static void devlink_nl_region_notify(struct devlink_region *region,
3720 struct devlink_snapshot *snapshot,
3721 enum devlink_command cmd)
3722{
3723 struct devlink *devlink = region->devlink;
3724 struct sk_buff *msg;
3725 void *hdr;
3726 int err;
3727
3728 WARN_ON(cmd != DEVLINK_CMD_REGION_NEW && cmd != DEVLINK_CMD_REGION_DEL);
3729
3730 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3731 if (!msg)
3732 return;
3733
3734 hdr = genlmsg_put(msg, 0, 0, &devlink_nl_family, 0, cmd);
3735 if (!hdr)
3736 goto out_free_msg;
3737
3738 err = devlink_nl_put_handle(msg, devlink);
3739 if (err)
3740 goto out_cancel_msg;
3741
3742 err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME,
e8937681 3743 region->ops->name);
866319bb
AV		 3744 if (err)
3745 goto out_cancel_msg;
3746
3747 if (snapshot) {
3748 err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID,
3749 snapshot->id);
3750 if (err)
3751 goto out_cancel_msg;
3752 } else {
3753 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
3754 region->size, DEVLINK_ATTR_PAD);
3755 if (err)
3756 goto out_cancel_msg;
3757 }
3758 genlmsg_end(msg, hdr);
3759
3760 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
3761 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
3762
3763 return;
3764
3765out_cancel_msg:
3766 genlmsg_cancel(msg, hdr);
3767out_free_msg:
3768 nlmsg_free(msg);
3769}
3770
12102436
JK		 3771/**
3772 * __devlink_snapshot_id_increment - Increment number of snapshots using an id
3773 * @devlink: devlink instance
3774 * @id: the snapshot id
3775 *
3776 * Track when a new snapshot begins using an id. Load the count for the
3777 * given id from the snapshot xarray, increment it, and store it back.
3778 *
3779 * Called when a new snapshot is created with the given id.
3780 *
3781 * The id *must* have been previously allocated by
3782 * devlink_region_snapshot_id_get().
3783 *
3784 * Returns 0 on success, or an error on failure.
3785 */
3786static int __devlink_snapshot_id_increment(struct devlink *devlink, u32 id)
3787{
3788 unsigned long count;
3789 void *p;
3790
3791 lockdep_assert_held(&devlink->lock);
3792
3793 p = xa_load(&devlink->snapshot_ids, id);
3794 if (WARN_ON(!p))
3795 return -EINVAL;
3796
3797 if (WARN_ON(!xa_is_value(p)))
3798 return -EINVAL;
3799
3800 count = xa_to_value(p);
3801 count++;
3802
3803 return xa_err(xa_store(&devlink->snapshot_ids, id, xa_mk_value(count),
3804 GFP_KERNEL));
3805}
3806
3807/**
3808 * __devlink_snapshot_id_decrement - Decrease number of snapshots using an id
3809 * @devlink: devlink instance
3810 * @id: the snapshot id
3811 *
3812 * Track when a snapshot is deleted and stops using an id. Load the count
3813 * for the given id from the snapshot xarray, decrement it, and store it
3814 * back.
3815 *
3816 * If the count reaches zero, erase this id from the xarray, freeing it
3817 * up for future re-use by devlink_region_snapshot_id_get().
3818 *
3819 * Called when a snapshot using the given id is deleted, and when the
3820 * initial allocator of the id is finished using it.
3821 */
3822static void __devlink_snapshot_id_decrement(struct devlink *devlink, u32 id)
3823{
3824 unsigned long count;
3825 void *p;
3826
3827 lockdep_assert_held(&devlink->lock);
3828
3829 p = xa_load(&devlink->snapshot_ids, id);
3830 if (WARN_ON(!p))
3831 return;
3832
3833 if (WARN_ON(!xa_is_value(p)))
3834 return;
3835
3836 count = xa_to_value(p);
3837
3838 if (count > 1) {
3839 count--;
3840 xa_store(&devlink->snapshot_ids, id, xa_mk_value(count),
3841 GFP_KERNEL);
3842 } else {
3843 /* If this was the last user, we can erase this id */
3844 xa_erase(&devlink->snapshot_ids, id);
3845 }
3846}
3847
b9a17abf
JK		 3848/**
3849 * __devlink_snapshot_id_insert - Insert a specific snapshot ID
3850 * @devlink: devlink instance
3851 * @id: the snapshot id
3852 *
3853 * Mark the given snapshot id as used by inserting a zero value into the
3854 * snapshot xarray.
3855 *
3856 * This must be called while holding the devlink instance lock. Unlike
3857 * devlink_snapshot_id_get, the initial reference count is zero, not one.
3858 * It is expected that the id will immediately be used before
3859 * releasing the devlink instance lock.
3860 *
3861 * Returns zero on success, or an error code if the snapshot id could not
3862 * be inserted.
3863 */
3864static int __devlink_snapshot_id_insert(struct devlink *devlink, u32 id)
3865{
3866 lockdep_assert_held(&devlink->lock);
3867
3868 if (WARN_ON(xa_load(&devlink->snapshot_ids, id)))
3869 return -EEXIST;
3870
3871 return xa_err(xa_store(&devlink->snapshot_ids, id, xa_mk_value(0),
3872 GFP_KERNEL));
3873}
3874
7000108f
JK		 3875/**
3876 * __devlink_region_snapshot_id_get - get snapshot ID
3877 * @devlink: devlink instance
7ef19d3b 3878 * @id: storage to return snapshot id
7000108f 3879 *
7ef19d3b
JK		 3880 * Allocates a new snapshot id. Returns zero on success, or a negative
3881 * error on failure. Must be called while holding the devlink instance
3882 * lock.
12102436
JK		 3883 *
3884 * Snapshot IDs are tracked using an xarray which stores the number of
3885 * users of the snapshot id.
3886 *
3887 * Note that the caller of this function counts as a 'user', in order to
3888 * avoid race conditions. The caller must release its hold on the
3889 * snapshot by using devlink_region_snapshot_id_put.
7000108f 3890 */
7ef19d3b 3891static int __devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id)
7000108f
JK		 3892{
3893 lockdep_assert_held(&devlink->lock);
7ef19d3b 3894
12102436
JK		 3895 return xa_alloc(&devlink->snapshot_ids, id, xa_mk_value(1),
3896 xa_limit_32b, GFP_KERNEL);
7000108f
JK		 3897}
3898
cf80faee
JK		 3899/**
3900 * __devlink_region_snapshot_create - create a new snapshot
3901 * This will add a new snapshot of a region. The snapshot
3902 * will be stored on the region struct and can be accessed
3903 * from devlink. This is useful for future analyses of snapshots.
3904 * Multiple snapshots can be created on a region.
3905 * The @snapshot_id should be obtained using the getter function.
3906 *
3907 * Must be called only while holding the devlink instance lock.
3908 *
3909 * @region: devlink region of the snapshot
3910 * @data: snapshot data
3911 * @snapshot_id: snapshot id to be created
3912 */
3913static int
3914__devlink_region_snapshot_create(struct devlink_region *region,
3915 u8 *data, u32 snapshot_id)
3916{
3917 struct devlink *devlink = region->devlink;
3918 struct devlink_snapshot *snapshot;
12102436 3919 int err;
cf80faee
JK		 3920
3921 lockdep_assert_held(&devlink->lock);
3922
3923 /* check if region can hold one more snapshot */
3924 if (region->cur_snapshots == region->max_snapshots)
47a39f61 3925 return -ENOSPC;
cf80faee
JK		 3926
3927 if (devlink_region_snapshot_get_by_id(region, snapshot_id))
3928 return -EEXIST;
3929
3930 snapshot = kzalloc(sizeof(*snapshot), GFP_KERNEL);
3931 if (!snapshot)
3932 return -ENOMEM;
3933
12102436
JK		 3934 err = __devlink_snapshot_id_increment(devlink, snapshot_id);
3935 if (err)
3936 goto err_snapshot_id_increment;
3937
cf80faee
JK		 3938 snapshot->id = snapshot_id;
3939 snapshot->region = region;
3940 snapshot->data = data;
3941
3942 list_add_tail(&snapshot->list, &region->snapshot_list);
3943
3944 region->cur_snapshots++;
3945
3946 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_NEW);
3947 return 0;
12102436
JK		 3948
3949err_snapshot_id_increment:
3950 kfree(snapshot);
3951 return err;
cf80faee
JK		 3952}
3953
92b49822
JP		 3954static void devlink_region_snapshot_del(struct devlink_region *region,
3955 struct devlink_snapshot *snapshot)
3956{
12102436
JK		 3957 struct devlink *devlink = region->devlink;
3958
3959 lockdep_assert_held(&devlink->lock);
3960
92b49822
JP		 3961 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_DEL);
3962 region->cur_snapshots--;
3963 list_del(&snapshot->list);
a0a09f6b 3964 region->ops->destructor(snapshot->data);
12102436 3965 __devlink_snapshot_id_decrement(devlink, snapshot->id);
92b49822
JP		 3966 kfree(snapshot);
3967}
3968
d8db7ea5
AV		 3969static int devlink_nl_cmd_region_get_doit(struct sk_buff *skb,
3970 struct genl_info *info)
3971{
3972 struct devlink *devlink = info->user_ptr[0];
3973 struct devlink_region *region;
3974 const char *region_name;
3975 struct sk_buff *msg;
3976 int err;
3977
3978 if (!info->attrs[DEVLINK_ATTR_REGION_NAME])
3979 return -EINVAL;
3980
3981 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
3982 region = devlink_region_get_by_name(devlink, region_name);
3983 if (!region)
3984 return -EINVAL;
3985
3986 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3987 if (!msg)
3988 return -ENOMEM;
3989
3990 err = devlink_nl_region_fill(msg, devlink, DEVLINK_CMD_REGION_GET,
3991 info->snd_portid, info->snd_seq, 0,
3992 region);
3993 if (err) {
3994 nlmsg_free(msg);
3995 return err;
3996 }
3997
3998 return genlmsg_reply(msg, info);
3999}
4000
4001static int devlink_nl_cmd_region_get_dumpit(struct sk_buff *msg,
4002 struct netlink_callback *cb)
4003{
4004 struct devlink_region *region;
4005 struct devlink *devlink;
4006 int start = cb->args[0];
4007 int idx = 0;
4008 int err;
4009
4010 mutex_lock(&devlink_mutex);
4011 list_for_each_entry(devlink, &devlink_list, list) {
4012 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
4013 continue;
4014
4015 mutex_lock(&devlink->lock);
4016 list_for_each_entry(region, &devlink->region_list, list) {
4017 if (idx < start) {
4018 idx++;
4019 continue;
4020 }
4021 err = devlink_nl_region_fill(msg, devlink,
4022 DEVLINK_CMD_REGION_GET,
4023 NETLINK_CB(cb->skb).portid,
4024 cb->nlh->nlmsg_seq,
4025 NLM_F_MULTI, region);
4026 if (err) {
4027 mutex_unlock(&devlink->lock);
4028 goto out;
4029 }
4030 idx++;
4031 }
4032 mutex_unlock(&devlink->lock);
4033 }
4034out:
4035 mutex_unlock(&devlink_mutex);
4036 cb->args[0] = idx;
4037 return msg->len;
4038}
4039
866319bb
AV		 4040static int devlink_nl_cmd_region_del(struct sk_buff *skb,
4041 struct genl_info *info)
4042{
4043 struct devlink *devlink = info->user_ptr[0];
4044 struct devlink_snapshot *snapshot;
4045 struct devlink_region *region;
4046 const char *region_name;
4047 u32 snapshot_id;
4048
4049 if (!info->attrs[DEVLINK_ATTR_REGION_NAME] ||
4050 !info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID])
4051 return -EINVAL;
4052
4053 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
4054 snapshot_id = nla_get_u32(info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
4055
4056 region = devlink_region_get_by_name(devlink, region_name);
4057 if (!region)
4058 return -EINVAL;
4059
4060 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
4061 if (!snapshot)
4062 return -EINVAL;
4063
92b49822 4064 devlink_region_snapshot_del(region, snapshot);
866319bb
AV		 4065 return 0;
4066}
4067
b9a17abf
JK		 4068static int
4069devlink_nl_cmd_region_new(struct sk_buff *skb, struct genl_info *info)
4070{
4071 struct devlink *devlink = info->user_ptr[0];
4072 struct devlink_region *region;
4073 const char *region_name;
4074 u32 snapshot_id;
4075 u8 *data;
4076 int err;
4077
4078 if (!info->attrs[DEVLINK_ATTR_REGION_NAME]) {
4079 NL_SET_ERR_MSG_MOD(info->extack, "No region name provided");
4080 return -EINVAL;
4081 }
4082
4083 if (!info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]) {
4084 NL_SET_ERR_MSG_MOD(info->extack, "No snapshot id provided");
4085 return -EINVAL;
4086 }
4087
4088 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
4089 region = devlink_region_get_by_name(devlink, region_name);
4090 if (!region) {
4091 NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not exist");
4092 return -EINVAL;
4093 }
4094
4095 if (!region->ops->snapshot) {
4096 NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not support taking an immediate snapshot");
4097 return -EOPNOTSUPP;
4098 }
4099
4100 if (region->cur_snapshots == region->max_snapshots) {
4101 NL_SET_ERR_MSG_MOD(info->extack, "The region has reached the maximum number of stored snapshots");
4102 return -ENOSPC;
4103 }
4104
4105 snapshot_id = nla_get_u32(info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
4106
4107 if (devlink_region_snapshot_get_by_id(region, snapshot_id)) {
4108 NL_SET_ERR_MSG_MOD(info->extack, "The requested snapshot id is already in use");
4109 return -EEXIST;
4110 }
4111
4112 err = __devlink_snapshot_id_insert(devlink, snapshot_id);
4113 if (err)
4114 return err;
4115
4116 err = region->ops->snapshot(devlink, info->extack, &data);
4117 if (err)
4118 goto err_snapshot_capture;
4119
4120 err = __devlink_region_snapshot_create(region, data, snapshot_id);
4121 if (err)
4122 goto err_snapshot_create;
4123
4124 return 0;
4125
4126err_snapshot_create:
4127 region->ops->destructor(data);
4128err_snapshot_capture:
4129 __devlink_snapshot_id_decrement(devlink, snapshot_id);
4130 return err;
4131}
4132
4e54795a
AV		 4133static int devlink_nl_cmd_region_read_chunk_fill(struct sk_buff *msg,
4134 struct devlink *devlink,
4135 u8 *chunk, u32 chunk_size,
4136 u64 addr)
4137{
4138 struct nlattr *chunk_attr;
4139 int err;
4140
ae0be8de 4141 chunk_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_CHUNK);
4e54795a
AV		 4142 if (!chunk_attr)
4143 return -EINVAL;
4144
4145 err = nla_put(msg, DEVLINK_ATTR_REGION_CHUNK_DATA, chunk_size, chunk);
4146 if (err)
4147 goto nla_put_failure;
4148
4149 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_CHUNK_ADDR, addr,
4150 DEVLINK_ATTR_PAD);
4151 if (err)
4152 goto nla_put_failure;
4153
4154 nla_nest_end(msg, chunk_attr);
4155 return 0;
4156
4157nla_put_failure:
4158 nla_nest_cancel(msg, chunk_attr);
4159 return err;
4160}
4161
4162#define DEVLINK_REGION_READ_CHUNK_SIZE 256
4163
4164static int devlink_nl_region_read_snapshot_fill(struct sk_buff *skb,
4165 struct devlink *devlink,
4166 struct devlink_region *region,
4167 struct nlattr **attrs,
4168 u64 start_offset,
4169 u64 end_offset,
4170 bool dump,
4171 u64 *new_offset)
4172{
4173 struct devlink_snapshot *snapshot;
4174 u64 curr_offset = start_offset;
4175 u32 snapshot_id;
4176 int err = 0;
4177
4178 *new_offset = start_offset;
4179
4180 snapshot_id = nla_get_u32(attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
4181 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
4182 if (!snapshot)
4183 return -EINVAL;
4184
3a5e5234
JP		 4185 if (end_offset > region->size || dump)
4186 end_offset = region->size;
4e54795a
AV		 4187
4188 while (curr_offset < end_offset) {
4189 u32 data_size;
4190 u8 *data;
4191
4192 if (end_offset - curr_offset < DEVLINK_REGION_READ_CHUNK_SIZE)
4193 data_size = end_offset - curr_offset;
4194 else
4195 data_size = DEVLINK_REGION_READ_CHUNK_SIZE;
4196
4197 data = &snapshot->data[curr_offset];
4198 err = devlink_nl_cmd_region_read_chunk_fill(skb, devlink,
4199 data, data_size,
4200 curr_offset);
4201 if (err)
4202 break;
4203
4204 curr_offset += data_size;
4205 }
4206 *new_offset = curr_offset;
4207
4208 return err;
4209}
4210
4211static int devlink_nl_cmd_region_read_dumpit(struct sk_buff *skb,
4212 struct netlink_callback *cb)
4213{
ee85da53 4214 const struct genl_dumpit_info *info = genl_dumpit_info(cb);
4e54795a 4215 u64 ret_offset, start_offset, end_offset = 0;
ee85da53 4216 struct nlattr **attrs = info->attrs;
4e54795a
AV		 4217 struct devlink_region *region;
4218 struct nlattr *chunks_attr;
4219 const char *region_name;
4220 struct devlink *devlink;
4221 bool dump = true;
4222 void *hdr;
4223 int err;
4224
4225 start_offset = *((u64 *)&cb->args[0]);
4226
dac7c08f 4227 mutex_lock(&devlink_mutex);
4e54795a 4228 devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
fdd41ec2
PP		 4229 if (IS_ERR(devlink)) {
4230 err = PTR_ERR(devlink);
dac7c08f 4231 goto out_dev;
fdd41ec2 4232 }
4e54795a 4233
4e54795a
AV		 4234 mutex_lock(&devlink->lock);
4235
4236 if (!attrs[DEVLINK_ATTR_REGION_NAME] ||
fdd41ec2
PP		 4237 !attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]) {
4238 err = -EINVAL;
4e54795a 4239 goto out_unlock;
fdd41ec2 4240 }
4e54795a
AV		 4241
4242 region_name = nla_data(attrs[DEVLINK_ATTR_REGION_NAME]);
4243 region = devlink_region_get_by_name(devlink, region_name);
fdd41ec2
PP		 4244 if (!region) {
4245 err = -EINVAL;
4e54795a 4246 goto out_unlock;
fdd41ec2 4247 }
4e54795a 4248
d5b90e99
JK		 4249 /* return 0 if there is no further data to read */
4250 if (start_offset >= region->size) {
4251 err = 0;
4252 goto out_unlock;
4253 }
4254
4e54795a
AV		 4255 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
4256 &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI,
4257 DEVLINK_CMD_REGION_READ);
fdd41ec2
PP		 4258 if (!hdr) {
4259 err = -EMSGSIZE;
4e54795a 4260 goto out_unlock;
fdd41ec2 4261 }
4e54795a
AV		 4262
4263 err = devlink_nl_put_handle(skb, devlink);
4264 if (err)
4265 goto nla_put_failure;
4266
4267 err = nla_put_string(skb, DEVLINK_ATTR_REGION_NAME, region_name);
4268 if (err)
4269 goto nla_put_failure;
4270
ae0be8de 4271 chunks_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_REGION_CHUNKS);
fdd41ec2
PP		 4272 if (!chunks_attr) {
4273 err = -EMSGSIZE;
4e54795a 4274 goto nla_put_failure;
fdd41ec2 4275 }
4e54795a
AV		 4276
4277 if (attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR] &&
4278 attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]) {
4279 if (!start_offset)
4280 start_offset =
4281 nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
4282
4283 end_offset = nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
4284 end_offset += nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]);
4285 dump = false;
4286 }
4287
4288 err = devlink_nl_region_read_snapshot_fill(skb, devlink,
4289 region, attrs,
4290 start_offset,
4291 end_offset, dump,
4292 &ret_offset);
4293
4294 if (err && err != -EMSGSIZE)
4295 goto nla_put_failure;
4296
4297 /* Check if there was any progress done to prevent infinite loop */
fdd41ec2
PP		 4298 if (ret_offset == start_offset) {
4299 err = -EINVAL;
4e54795a 4300 goto nla_put_failure;
fdd41ec2 4301 }
4e54795a
AV		 4302
4303 *((u64 *)&cb->args[0]) = ret_offset;
4304
4305 nla_nest_end(skb, chunks_attr);
4306 genlmsg_end(skb, hdr);
4307 mutex_unlock(&devlink->lock);
4308 mutex_unlock(&devlink_mutex);
4309
4310 return skb->len;
4311
4312nla_put_failure:
4313 genlmsg_cancel(skb, hdr);
4314out_unlock:
4315 mutex_unlock(&devlink->lock);
dac7c08f 4316out_dev:
4e54795a 4317 mutex_unlock(&devlink_mutex);
fdd41ec2 4318 return err;
4e54795a
AV		 4319}
4320
f9cf2288
JK		 4321struct devlink_info_req {
4322 struct sk_buff *msg;
4323};
4324
4325int devlink_info_driver_name_put(struct devlink_info_req *req, const char *name)
4326{
4327 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_DRIVER_NAME, name);
4328}
4329EXPORT_SYMBOL_GPL(devlink_info_driver_name_put);
4330
4331int devlink_info_serial_number_put(struct devlink_info_req *req, const char *sn)
4332{
4333 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_SERIAL_NUMBER, sn);
4334}
4335EXPORT_SYMBOL_GPL(devlink_info_serial_number_put);
4336
fc6fae7d
JK		 4337static int devlink_info_version_put(struct devlink_info_req *req, int attr,
4338 const char *version_name,
4339 const char *version_value)
4340{
4341 struct nlattr *nest;
4342 int err;
4343
ae0be8de 4344 nest = nla_nest_start_noflag(req->msg, attr);
fc6fae7d
JK		 4345 if (!nest)
4346 return -EMSGSIZE;
4347
4348 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_NAME,
4349 version_name);
4350 if (err)
4351 goto nla_put_failure;
4352
4353 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_VALUE,
4354 version_value);
4355 if (err)
4356 goto nla_put_failure;
4357
4358 nla_nest_end(req->msg, nest);
4359
4360 return 0;
4361
4362nla_put_failure:
4363 nla_nest_cancel(req->msg, nest);
4364 return err;
4365}
4366
4367int devlink_info_version_fixed_put(struct devlink_info_req *req,
4368 const char *version_name,
4369 const char *version_value)
4370{
4371 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_FIXED,
4372 version_name, version_value);
4373}
4374EXPORT_SYMBOL_GPL(devlink_info_version_fixed_put);
4375
4376int devlink_info_version_stored_put(struct devlink_info_req *req,
4377 const char *version_name,
4378 const char *version_value)
4379{
4380 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_STORED,
4381 version_name, version_value);
4382}
4383EXPORT_SYMBOL_GPL(devlink_info_version_stored_put);
4384
4385int devlink_info_version_running_put(struct devlink_info_req *req,
4386 const char *version_name,
4387 const char *version_value)
4388{
4389 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_RUNNING,
4390 version_name, version_value);
4391}
4392EXPORT_SYMBOL_GPL(devlink_info_version_running_put);
4393
f9cf2288
JK		 4394static int
4395devlink_nl_info_fill(struct sk_buff *msg, struct devlink *devlink,
4396 enum devlink_command cmd, u32 portid,
4397 u32 seq, int flags, struct netlink_ext_ack *extack)
4398{
4399 struct devlink_info_req req;
4400 void *hdr;
4401 int err;
4402
4403 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
4404 if (!hdr)
4405 return -EMSGSIZE;
4406
4407 err = -EMSGSIZE;
4408 if (devlink_nl_put_handle(msg, devlink))
4409 goto err_cancel_msg;
4410
4411 req.msg = msg;
4412 err = devlink->ops->info_get(devlink, &req, extack);
4413 if (err)
4414 goto err_cancel_msg;
4415
4416 genlmsg_end(msg, hdr);
4417 return 0;
4418
4419err_cancel_msg:
4420 genlmsg_cancel(msg, hdr);
4421 return err;
4422}
4423
4424static int devlink_nl_cmd_info_get_doit(struct sk_buff *skb,
4425 struct genl_info *info)
4426{
4427 struct devlink *devlink = info->user_ptr[0];
4428 struct sk_buff *msg;
4429 int err;
4430
be6fe1d8 4431 if (!devlink->ops->info_get)
f9cf2288
JK		 4432 return -EOPNOTSUPP;
4433
4434 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4435 if (!msg)
4436 return -ENOMEM;
4437
4438 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
4439 info->snd_portid, info->snd_seq, 0,
4440 info->extack);
4441 if (err) {
4442 nlmsg_free(msg);
4443 return err;
4444 }
4445
4446 return genlmsg_reply(msg, info);
4447}
4448
4449static int devlink_nl_cmd_info_get_dumpit(struct sk_buff *msg,
4450 struct netlink_callback *cb)
4451{
4452 struct devlink *devlink;
4453 int start = cb->args[0];
4454 int idx = 0;
c62c2cfb 4455 int err = 0;
f9cf2288
JK		 4456
4457 mutex_lock(&devlink_mutex);
4458 list_for_each_entry(devlink, &devlink_list, list) {
4459 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
4460 continue;
4461 if (idx < start) {
4462 idx++;
4463 continue;
4464 }
4465
c493b09b
JP		 4466 if (!devlink->ops->info_get) {
4467 idx++;
4468 continue;
4469 }
4470
f9cf2288
JK		 4471 mutex_lock(&devlink->lock);
4472 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
4473 NETLINK_CB(cb->skb).portid,
4474 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4475 cb->extack);
4476 mutex_unlock(&devlink->lock);
93c2fcb0 4477 if (err && err != -EOPNOTSUPP)
f9cf2288
JK		 4478 break;
4479 idx++;
4480 }
4481 mutex_unlock(&devlink_mutex);
4482
c62c2cfb
JP		 4483 if (err != -EMSGSIZE)
4484 return err;
4485
f9cf2288
JK		 4486 cb->args[0] = idx;
4487 return msg->len;
4488}
4489
1db64e87
EBE		 4490struct devlink_fmsg_item {
4491 struct list_head list;
4492 int attrtype;
4493 u8 nla_type;
4494 u16 len;
d2afb41a 4495 int value[];
1db64e87
EBE		 4496};
4497
4498struct devlink_fmsg {
4499 struct list_head item_list;
573ed90a
AL		 4500 bool putting_binary; /* This flag forces enclosing of binary data
4501 * in an array brackets. It forces using
4502 * of designated API:
4503 * devlink_fmsg_binary_pair_nest_start()
4504 * devlink_fmsg_binary_pair_nest_end()
4505 */
1db64e87
EBE		 4506};
4507
4508static struct devlink_fmsg *devlink_fmsg_alloc(void)
4509{
4510 struct devlink_fmsg *fmsg;
4511
4512 fmsg = kzalloc(sizeof(*fmsg), GFP_KERNEL);
4513 if (!fmsg)
4514 return NULL;
4515
4516 INIT_LIST_HEAD(&fmsg->item_list);
4517
4518 return fmsg;
4519}
4520
4521static void devlink_fmsg_free(struct devlink_fmsg *fmsg)
4522{
4523 struct devlink_fmsg_item *item, *tmp;
4524
4525 list_for_each_entry_safe(item, tmp, &fmsg->item_list, list) {
4526 list_del(&item->list);
4527 kfree(item);
4528 }
4529 kfree(fmsg);
4530}
4531
4532static int devlink_fmsg_nest_common(struct devlink_fmsg *fmsg,
4533 int attrtype)
4534{
4535 struct devlink_fmsg_item *item;
4536
4537 item = kzalloc(sizeof(*item), GFP_KERNEL);
4538 if (!item)
4539 return -ENOMEM;
4540
4541 item->attrtype = attrtype;
4542 list_add_tail(&item->list, &fmsg->item_list);
4543
4544 return 0;
4545}
4546
4547int devlink_fmsg_obj_nest_start(struct devlink_fmsg *fmsg)
4548{
573ed90a
AL		 4549 if (fmsg->putting_binary)
4550 return -EINVAL;
4551
1db64e87
EBE		 4552 return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_OBJ_NEST_START);
4553}
4554EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_start);
4555
4556static int devlink_fmsg_nest_end(struct devlink_fmsg *fmsg)
4557{
573ed90a
AL		 4558 if (fmsg->putting_binary)
4559 return -EINVAL;
4560
1db64e87
EBE		 4561 return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_NEST_END);
4562}
4563
4564int devlink_fmsg_obj_nest_end(struct devlink_fmsg *fmsg)
4565{
573ed90a
AL		 4566 if (fmsg->putting_binary)
4567 return -EINVAL;
4568
1db64e87
EBE		 4569 return devlink_fmsg_nest_end(fmsg);
4570}
4571EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_end);
4572
4573#define DEVLINK_FMSG_MAX_SIZE (GENLMSG_DEFAULT_SIZE - GENL_HDRLEN - NLA_HDRLEN)
4574
4575static int devlink_fmsg_put_name(struct devlink_fmsg *fmsg, const char *name)
4576{
4577 struct devlink_fmsg_item *item;
4578
573ed90a
AL		 4579 if (fmsg->putting_binary)
4580 return -EINVAL;
4581
1db64e87
EBE		 4582 if (strlen(name) + 1 > DEVLINK_FMSG_MAX_SIZE)
4583 return -EMSGSIZE;
4584
4585 item = kzalloc(sizeof(*item) + strlen(name) + 1, GFP_KERNEL);
4586 if (!item)
4587 return -ENOMEM;
4588
4589 item->nla_type = NLA_NUL_STRING;
4590 item->len = strlen(name) + 1;
4591 item->attrtype = DEVLINK_ATTR_FMSG_OBJ_NAME;
4592 memcpy(&item->value, name, item->len);
4593 list_add_tail(&item->list, &fmsg->item_list);
4594
4595 return 0;
4596}
4597
4598int devlink_fmsg_pair_nest_start(struct devlink_fmsg *fmsg, const char *name)
4599{
4600 int err;
4601
573ed90a
AL		 4602 if (fmsg->putting_binary)
4603 return -EINVAL;
4604
1db64e87
EBE		 4605 err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_PAIR_NEST_START);
4606 if (err)
4607 return err;
4608
4609 err = devlink_fmsg_put_name(fmsg, name);
4610 if (err)
4611 return err;
4612
4613 return 0;
4614}
4615EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_start);
4616
4617int devlink_fmsg_pair_nest_end(struct devlink_fmsg *fmsg)
4618{
573ed90a
AL		 4619 if (fmsg->putting_binary)
4620 return -EINVAL;
4621
1db64e87
EBE		 4622 return devlink_fmsg_nest_end(fmsg);
4623}
4624EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_end);
4625
4626int devlink_fmsg_arr_pair_nest_start(struct devlink_fmsg *fmsg,
4627 const char *name)
4628{
4629 int err;
4630
573ed90a
AL		 4631 if (fmsg->putting_binary)
4632 return -EINVAL;
4633
1db64e87
EBE		 4634 err = devlink_fmsg_pair_nest_start(fmsg, name);
4635 if (err)
4636 return err;
4637
4638 err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_ARR_NEST_START);
4639 if (err)
4640 return err;
4641
4642 return 0;
4643}
4644EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_start);
4645
4646int devlink_fmsg_arr_pair_nest_end(struct devlink_fmsg *fmsg)
4647{
4648 int err;
4649
573ed90a
AL		 4650 if (fmsg->putting_binary)
4651 return -EINVAL;
4652
1db64e87
EBE		 4653 err = devlink_fmsg_nest_end(fmsg);
4654 if (err)
4655 return err;
4656
4657 err = devlink_fmsg_nest_end(fmsg);
4658 if (err)
4659 return err;
4660
4661 return 0;
4662}
4663EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_end);
4664
573ed90a
AL		 4665int devlink_fmsg_binary_pair_nest_start(struct devlink_fmsg *fmsg,
4666 const char *name)
4667{
4668 int err;
4669
4670 err = devlink_fmsg_arr_pair_nest_start(fmsg, name);
4671 if (err)
4672 return err;
4673
4674 fmsg->putting_binary = true;
4675 return err;
4676}
4677EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_start);
4678
4679int devlink_fmsg_binary_pair_nest_end(struct devlink_fmsg *fmsg)
4680{
4681 if (!fmsg->putting_binary)
4682 return -EINVAL;
4683
4684 fmsg->putting_binary = false;
4685 return devlink_fmsg_arr_pair_nest_end(fmsg);
4686}
4687EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_end);
4688
1db64e87
EBE		 4689static int devlink_fmsg_put_value(struct devlink_fmsg *fmsg,
4690 const void *value, u16 value_len,
4691 u8 value_nla_type)
4692{
4693 struct devlink_fmsg_item *item;
4694
4695 if (value_len > DEVLINK_FMSG_MAX_SIZE)
4696 return -EMSGSIZE;
4697
4698 item = kzalloc(sizeof(*item) + value_len, GFP_KERNEL);
4699 if (!item)
4700 return -ENOMEM;
4701
4702 item->nla_type = value_nla_type;
4703 item->len = value_len;
4704 item->attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
4705 memcpy(&item->value, value, item->len);
4706 list_add_tail(&item->list, &fmsg->item_list);
4707
4708 return 0;
4709}
4710
4711int devlink_fmsg_bool_put(struct devlink_fmsg *fmsg, bool value)
4712{
573ed90a
AL		 4713 if (fmsg->putting_binary)
4714 return -EINVAL;
4715
1db64e87
EBE		 4716 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_FLAG);
4717}
4718EXPORT_SYMBOL_GPL(devlink_fmsg_bool_put);
4719
4720int devlink_fmsg_u8_put(struct devlink_fmsg *fmsg, u8 value)
4721{
573ed90a
AL		 4722 if (fmsg->putting_binary)
4723 return -EINVAL;
4724
1db64e87
EBE		 4725 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U8);
4726}
4727EXPORT_SYMBOL_GPL(devlink_fmsg_u8_put);
4728
4729int devlink_fmsg_u32_put(struct devlink_fmsg *fmsg, u32 value)
4730{
573ed90a
AL		 4731 if (fmsg->putting_binary)
4732 return -EINVAL;
4733
1db64e87
EBE		 4734 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U32);
4735}
4736EXPORT_SYMBOL_GPL(devlink_fmsg_u32_put);
4737
4738int devlink_fmsg_u64_put(struct devlink_fmsg *fmsg, u64 value)
4739{
573ed90a
AL		 4740 if (fmsg->putting_binary)
4741 return -EINVAL;
4742
1db64e87
EBE		 4743 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U64);
4744}
4745EXPORT_SYMBOL_GPL(devlink_fmsg_u64_put);
4746
4747int devlink_fmsg_string_put(struct devlink_fmsg *fmsg, const char *value)
4748{
573ed90a
AL		 4749 if (fmsg->putting_binary)
4750 return -EINVAL;
4751
1db64e87
EBE		 4752 return devlink_fmsg_put_value(fmsg, value, strlen(value) + 1,
4753 NLA_NUL_STRING);
4754}
4755EXPORT_SYMBOL_GPL(devlink_fmsg_string_put);
4756
573ed90a
AL		 4757int devlink_fmsg_binary_put(struct devlink_fmsg *fmsg, const void *value,
4758 u16 value_len)
1db64e87 4759{
573ed90a
AL		 4760 if (!fmsg->putting_binary)
4761 return -EINVAL;
4762
1db64e87
EBE		 4763 return devlink_fmsg_put_value(fmsg, value, value_len, NLA_BINARY);
4764}
573ed90a 4765EXPORT_SYMBOL_GPL(devlink_fmsg_binary_put);
1db64e87
EBE		 4766
4767int devlink_fmsg_bool_pair_put(struct devlink_fmsg *fmsg, const char *name,
4768 bool value)
4769{
4770 int err;
4771
4772 err = devlink_fmsg_pair_nest_start(fmsg, name);
4773 if (err)
4774 return err;
4775
4776 err = devlink_fmsg_bool_put(fmsg, value);
4777 if (err)
4778 return err;
4779
4780 err = devlink_fmsg_pair_nest_end(fmsg);
4781 if (err)
4782 return err;
4783
4784 return 0;
4785}
4786EXPORT_SYMBOL_GPL(devlink_fmsg_bool_pair_put);
4787
4788int devlink_fmsg_u8_pair_put(struct devlink_fmsg *fmsg, const char *name,
4789 u8 value)
4790{
4791 int err;
4792
4793 err = devlink_fmsg_pair_nest_start(fmsg, name);
4794 if (err)
4795 return err;
4796
4797 err = devlink_fmsg_u8_put(fmsg, value);
4798 if (err)
4799 return err;
4800
4801 err = devlink_fmsg_pair_nest_end(fmsg);
4802 if (err)
4803 return err;
4804
4805 return 0;
4806}
4807EXPORT_SYMBOL_GPL(devlink_fmsg_u8_pair_put);
4808
4809int devlink_fmsg_u32_pair_put(struct devlink_fmsg *fmsg, const char *name,
4810 u32 value)
4811{
4812 int err;
4813
4814 err = devlink_fmsg_pair_nest_start(fmsg, name);
4815 if (err)
4816 return err;
4817
4818 err = devlink_fmsg_u32_put(fmsg, value);
4819 if (err)
4820 return err;
4821
4822 err = devlink_fmsg_pair_nest_end(fmsg);
4823 if (err)
4824 return err;
4825
4826 return 0;
4827}
4828EXPORT_SYMBOL_GPL(devlink_fmsg_u32_pair_put);
4829
4830int devlink_fmsg_u64_pair_put(struct devlink_fmsg *fmsg, const char *name,
4831 u64 value)
4832{
4833 int err;
4834
4835 err = devlink_fmsg_pair_nest_start(fmsg, name);
4836 if (err)
4837 return err;
4838
4839 err = devlink_fmsg_u64_put(fmsg, value);
4840 if (err)
4841 return err;
4842
4843 err = devlink_fmsg_pair_nest_end(fmsg);
4844 if (err)
4845 return err;
4846
4847 return 0;
4848}
4849EXPORT_SYMBOL_GPL(devlink_fmsg_u64_pair_put);
4850
4851int devlink_fmsg_string_pair_put(struct devlink_fmsg *fmsg, const char *name,
4852 const char *value)
4853{
4854 int err;
4855
4856 err = devlink_fmsg_pair_nest_start(fmsg, name);
4857 if (err)
4858 return err;
4859
4860 err = devlink_fmsg_string_put(fmsg, value);
4861 if (err)
4862 return err;
4863
4864 err = devlink_fmsg_pair_nest_end(fmsg);
4865 if (err)
4866 return err;
4867
4868 return 0;
4869}
4870EXPORT_SYMBOL_GPL(devlink_fmsg_string_pair_put);
4871
4872int devlink_fmsg_binary_pair_put(struct devlink_fmsg *fmsg, const char *name,
e2cde864 4873 const void *value, u32 value_len)
1db64e87 4874{
e2cde864 4875 u32 data_size;
573ed90a 4876 int end_err;
e2cde864 4877 u32 offset;
1db64e87
EBE		 4878 int err;
4879
573ed90a 4880 err = devlink_fmsg_binary_pair_nest_start(fmsg, name);
1db64e87
EBE		 4881 if (err)
4882 return err;
4883
e2cde864
AL		 4884 for (offset = 0; offset < value_len; offset += data_size) {
4885 data_size = value_len - offset;
4886 if (data_size > DEVLINK_FMSG_MAX_SIZE)
4887 data_size = DEVLINK_FMSG_MAX_SIZE;
4888 err = devlink_fmsg_binary_put(fmsg, value + offset, data_size);
4889 if (err)
573ed90a
AL		 4890 break;
4891 /* Exit from loop with a break (instead of
4892 * return) to make sure putting_binary is turned off in
4893 * devlink_fmsg_binary_pair_nest_end
4894 */
e2cde864 4895 }
1db64e87 4896
573ed90a
AL		 4897 end_err = devlink_fmsg_binary_pair_nest_end(fmsg);
4898 if (end_err)
4899 err = end_err;
1db64e87 4900
573ed90a 4901 return err;
1db64e87
EBE		 4902}
4903EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_put);
4904
4905static int
4906devlink_fmsg_item_fill_type(struct devlink_fmsg_item *msg, struct sk_buff *skb)
4907{
4908 switch (msg->nla_type) {
4909 case NLA_FLAG:
4910 case NLA_U8:
4911 case NLA_U32:
4912 case NLA_U64:
4913 case NLA_NUL_STRING:
4914 case NLA_BINARY:
4915 return nla_put_u8(skb, DEVLINK_ATTR_FMSG_OBJ_VALUE_TYPE,
4916 msg->nla_type);
4917 default:
4918 return -EINVAL;
4919 }
4920}
4921
4922static int
4923devlink_fmsg_item_fill_data(struct devlink_fmsg_item *msg, struct sk_buff *skb)
4924{
4925 int attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
4926 u8 tmp;
4927
4928 switch (msg->nla_type) {
4929 case NLA_FLAG:
4930 /* Always provide flag data, regardless of its value */
4931 tmp = *(bool *) msg->value;
4932
4933 return nla_put_u8(skb, attrtype, tmp);
4934 case NLA_U8:
4935 return nla_put_u8(skb, attrtype, *(u8 *) msg->value);
4936 case NLA_U32:
4937 return nla_put_u32(skb, attrtype, *(u32 *) msg->value);
4938 case NLA_U64:
4939 return nla_put_u64_64bit(skb, attrtype, *(u64 *) msg->value,
4940 DEVLINK_ATTR_PAD);
4941 case NLA_NUL_STRING:
4942 return nla_put_string(skb, attrtype, (char *) &msg->value);
4943 case NLA_BINARY:
4944 return nla_put(skb, attrtype, msg->len, (void *) &msg->value);
4945 default:
4946 return -EINVAL;
4947 }
4948}
4949
4950static int
4951devlink_fmsg_prepare_skb(struct devlink_fmsg *fmsg, struct sk_buff *skb,
4952 int *start)
4953{
4954 struct devlink_fmsg_item *item;
4955 struct nlattr *fmsg_nlattr;
4956 int i = 0;
4957 int err;
4958
ae0be8de 4959 fmsg_nlattr = nla_nest_start_noflag(skb, DEVLINK_ATTR_FMSG);
1db64e87
EBE		 4960 if (!fmsg_nlattr)
4961 return -EMSGSIZE;
4962
4963 list_for_each_entry(item, &fmsg->item_list, list) {
4964 if (i < *start) {
4965 i++;
4966 continue;
4967 }
4968
4969 switch (item->attrtype) {
4970 case DEVLINK_ATTR_FMSG_OBJ_NEST_START:
4971 case DEVLINK_ATTR_FMSG_PAIR_NEST_START:
4972 case DEVLINK_ATTR_FMSG_ARR_NEST_START:
4973 case DEVLINK_ATTR_FMSG_NEST_END:
4974 err = nla_put_flag(skb, item->attrtype);
4975 break;
4976 case DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA:
4977 err = devlink_fmsg_item_fill_type(item, skb);
4978 if (err)
4979 break;
4980 err = devlink_fmsg_item_fill_data(item, skb);
4981 break;
4982 case DEVLINK_ATTR_FMSG_OBJ_NAME:
4983 err = nla_put_string(skb, item->attrtype,
4984 (char *) &item->value);
4985 break;
4986 default:
4987 err = -EINVAL;
4988 break;
4989 }
4990 if (!err)
4991 *start = ++i;
4992 else
4993 break;
4994 }
4995
4996 nla_nest_end(skb, fmsg_nlattr);
4997 return err;
4998}
4999
5000static int devlink_fmsg_snd(struct devlink_fmsg *fmsg,
5001 struct genl_info *info,
5002 enum devlink_command cmd, int flags)
5003{
5004 struct nlmsghdr *nlh;
5005 struct sk_buff *skb;
5006 bool last = false;
5007 int index = 0;
5008 void *hdr;
5009 int err;
5010
5011 while (!last) {
5012 int tmp_index = index;
5013
5014 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
5015 if (!skb)
5016 return -ENOMEM;
5017
5018 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
5019 &devlink_nl_family, flags | NLM_F_MULTI, cmd);
5020 if (!hdr) {
5021 err = -EMSGSIZE;
5022 goto nla_put_failure;
5023 }
5024
5025 err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
5026 if (!err)
5027 last = true;
5028 else if (err != -EMSGSIZE || tmp_index == index)
5029 goto nla_put_failure;
5030
5031 genlmsg_end(skb, hdr);
5032 err = genlmsg_reply(skb, info);
5033 if (err)
5034 return err;
5035 }
5036
5037 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
5038 if (!skb)
5039 return -ENOMEM;
5040 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
5041 NLMSG_DONE, 0, flags | NLM_F_MULTI);
5042 if (!nlh) {
5043 err = -EMSGSIZE;
5044 goto nla_put_failure;
5045 }
1db64e87 5046
fde55ea7 5047 return genlmsg_reply(skb, info);
1db64e87
EBE		 5048
5049nla_put_failure:
5050 nlmsg_free(skb);
5051 return err;
5052}
5053
e44ef4e4
AL		 5054static int devlink_fmsg_dumpit(struct devlink_fmsg *fmsg, struct sk_buff *skb,
5055 struct netlink_callback *cb,
5056 enum devlink_command cmd)
5057{
5058 int index = cb->args[0];
5059 int tmp_index = index;
5060 void *hdr;
5061 int err;
5062
5063 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
5064 &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI, cmd);
5065 if (!hdr) {
5066 err = -EMSGSIZE;
5067 goto nla_put_failure;
5068 }
5069
5070 err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
5071 if ((err && err != -EMSGSIZE) || tmp_index == index)
5072 goto nla_put_failure;
5073
5074 cb->args[0] = index;
5075 genlmsg_end(skb, hdr);
5076 return skb->len;
5077
5078nla_put_failure:
5079 genlmsg_cancel(skb, hdr);
5080 return err;
5081}
5082
a0bdcc59
EBE		 5083struct devlink_health_reporter {
5084 struct list_head list;
5085 void *priv;
5086 const struct devlink_health_reporter_ops *ops;
5087 struct devlink *devlink;
c8e1da0b
EBE		 5088 struct devlink_fmsg *dump_fmsg;
5089 struct mutex dump_lock; /* lock parallel read/write from dump buffers */
a0bdcc59
EBE		 5090 u64 graceful_period;
5091 bool auto_recover;
48bb52c8 5092 bool auto_dump;
a0bdcc59 5093 u8 health_state;
c8e1da0b 5094 u64 dump_ts;
d279505b 5095 u64 dump_real_ts;
c8e1da0b
EBE		 5096 u64 error_count;
5097 u64 recovery_count;
5098 u64 last_recovery_ts;
b587bdaf 5099 refcount_t refcount;
c8e1da0b
EBE		 5100};
5101
a0bdcc59
EBE		 5102void *
5103devlink_health_reporter_priv(struct devlink_health_reporter *reporter)
5104{
5105 return reporter->priv;
5106}
5107EXPORT_SYMBOL_GPL(devlink_health_reporter_priv);
5108
5109static struct devlink_health_reporter *
5110devlink_health_reporter_find_by_name(struct devlink *devlink,
5111 const char *reporter_name)
5112{
5113 struct devlink_health_reporter *reporter;
5114
b587bdaf 5115 lockdep_assert_held(&devlink->reporters_lock);
a0bdcc59
EBE		 5116 list_for_each_entry(reporter, &devlink->reporter_list, list)
5117 if (!strcmp(reporter->ops->name, reporter_name))
5118 return reporter;
5119 return NULL;
5120}
5121
5122/**
5123 * devlink_health_reporter_create - create devlink health reporter
5124 *
5125 * @devlink: devlink
5126 * @ops: ops
5127 * @graceful_period: to avoid recovery loops, in msecs
a0bdcc59
EBE		 5128 * @priv: priv
5129 */
5130struct devlink_health_reporter *
5131devlink_health_reporter_create(struct devlink *devlink,
5132 const struct devlink_health_reporter_ops *ops,
ba7d16c7 5133 u64 graceful_period, void *priv)
a0bdcc59
EBE		 5134{
5135 struct devlink_health_reporter *reporter;
5136
b587bdaf 5137 mutex_lock(&devlink->reporters_lock);
a0bdcc59
EBE		 5138 if (devlink_health_reporter_find_by_name(devlink, ops->name)) {
5139 reporter = ERR_PTR(-EEXIST);
5140 goto unlock;
5141 }
5142
ba7d16c7 5143 if (WARN_ON(graceful_period && !ops->recover)) {
a0bdcc59
EBE		 5144 reporter = ERR_PTR(-EINVAL);
5145 goto unlock;
5146 }
5147
5148 reporter = kzalloc(sizeof(*reporter), GFP_KERNEL);
5149 if (!reporter) {
5150 reporter = ERR_PTR(-ENOMEM);
5151 goto unlock;
5152 }
5153
5154 reporter->priv = priv;
5155 reporter->ops = ops;
5156 reporter->devlink = devlink;
5157 reporter->graceful_period = graceful_period;
ba7d16c7 5158 reporter->auto_recover = !!ops->recover;
48bb52c8 5159 reporter->auto_dump = !!ops->dump;
c8e1da0b 5160 mutex_init(&reporter->dump_lock);
b587bdaf 5161 refcount_set(&reporter->refcount, 1);
a0bdcc59
EBE		 5162 list_add_tail(&reporter->list, &devlink->reporter_list);
5163unlock:
b587bdaf 5164 mutex_unlock(&devlink->reporters_lock);
a0bdcc59
EBE		 5165 return reporter;
5166}
5167EXPORT_SYMBOL_GPL(devlink_health_reporter_create);
5168
5169/**
5170 * devlink_health_reporter_destroy - destroy devlink health reporter
5171 *
5172 * @reporter: devlink health reporter to destroy
5173 */
5174void
5175devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
5176{
b587bdaf 5177 mutex_lock(&reporter->devlink->reporters_lock);
a0bdcc59 5178 list_del(&reporter->list);
b587bdaf
MS		 5179 mutex_unlock(&reporter->devlink->reporters_lock);
5180 while (refcount_read(&reporter->refcount) > 1)
5181 msleep(100);
375cf8c6 5182 mutex_destroy(&reporter->dump_lock);
c8e1da0b
EBE		 5183 if (reporter->dump_fmsg)
5184 devlink_fmsg_free(reporter->dump_fmsg);
a0bdcc59
EBE		 5185 kfree(reporter);
5186}
5187EXPORT_SYMBOL_GPL(devlink_health_reporter_destroy);
5188
6ec8b6cd
MS		 5189static int
5190devlink_nl_health_reporter_fill(struct sk_buff *msg,
5191 struct devlink *devlink,
5192 struct devlink_health_reporter *reporter,
5193 enum devlink_command cmd, u32 portid,
5194 u32 seq, int flags)
5195{
5196 struct nlattr *reporter_attr;
5197 void *hdr;
5198
5199 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
5200 if (!hdr)
5201 return -EMSGSIZE;
5202
5203 if (devlink_nl_put_handle(msg, devlink))
5204 goto genlmsg_cancel;
5205
5206 reporter_attr = nla_nest_start_noflag(msg,
5207 DEVLINK_ATTR_HEALTH_REPORTER);
5208 if (!reporter_attr)
5209 goto genlmsg_cancel;
5210 if (nla_put_string(msg, DEVLINK_ATTR_HEALTH_REPORTER_NAME,
5211 reporter->ops->name))
5212 goto reporter_nest_cancel;
5213 if (nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_STATE,
5214 reporter->health_state))
5215 goto reporter_nest_cancel;
5216 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_ERR_COUNT,
5217 reporter->error_count, DEVLINK_ATTR_PAD))
5218 goto reporter_nest_cancel;
5219 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_RECOVER_COUNT,
5220 reporter->recovery_count, DEVLINK_ATTR_PAD))
5221 goto reporter_nest_cancel;
5222 if (reporter->ops->recover &&
5223 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD,
5224 reporter->graceful_period,
5225 DEVLINK_ATTR_PAD))
5226 goto reporter_nest_cancel;
5227 if (reporter->ops->recover &&
5228 nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER,
5229 reporter->auto_recover))
5230 goto reporter_nest_cancel;
5231 if (reporter->dump_fmsg &&
5232 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS,
5233 jiffies_to_msecs(reporter->dump_ts),
5234 DEVLINK_ATTR_PAD))
5235 goto reporter_nest_cancel;
5236 if (reporter->dump_fmsg &&
5237 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS_NS,
5238 reporter->dump_real_ts, DEVLINK_ATTR_PAD))
5239 goto reporter_nest_cancel;
48bb52c8
EBE		 5240 if (reporter->ops->dump &&
5241 nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP,
5242 reporter->auto_dump))
5243 goto reporter_nest_cancel;
6ec8b6cd
MS		 5244
5245 nla_nest_end(msg, reporter_attr);
5246 genlmsg_end(msg, hdr);
5247 return 0;
5248
5249reporter_nest_cancel:
5250 nla_nest_end(msg, reporter_attr);
5251genlmsg_cancel:
5252 genlmsg_cancel(msg, hdr);
5253 return -EMSGSIZE;
5254}
5255
5256static void devlink_recover_notify(struct devlink_health_reporter *reporter,
5257 enum devlink_command cmd)
5258{
5259 struct sk_buff *msg;
5260 int err;
5261
5262 WARN_ON(cmd != DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
5263
5264 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5265 if (!msg)
5266 return;
5267
5268 err = devlink_nl_health_reporter_fill(msg, reporter->devlink,
5269 reporter, cmd, 0, 0, 0);
5270 if (err) {
5271 nlmsg_free(msg);
5272 return;
5273 }
5274
5275 genlmsg_multicast_netns(&devlink_nl_family,
5276 devlink_net(reporter->devlink),
5277 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
5278}
5279
6181e5cb
VG		 5280void
5281devlink_health_reporter_recovery_done(struct devlink_health_reporter *reporter)
5282{
5283 reporter->recovery_count++;
5284 reporter->last_recovery_ts = jiffies;
5285}
5286EXPORT_SYMBOL_GPL(devlink_health_reporter_recovery_done);
5287
c8e1da0b
EBE		 5288static int
5289devlink_health_reporter_recover(struct devlink_health_reporter *reporter,
e7a98105 5290 void *priv_ctx, struct netlink_ext_ack *extack)
c8e1da0b
EBE		 5291{
5292 int err;
5293
40281820
JP		 5294 if (reporter->health_state == DEVLINK_HEALTH_REPORTER_STATE_HEALTHY)
5295 return 0;
5296
c8e1da0b
EBE		 5297 if (!reporter->ops->recover)
5298 return -EOPNOTSUPP;
5299
e7a98105 5300 err = reporter->ops->recover(reporter, priv_ctx, extack);
c8e1da0b
EBE		 5301 if (err)
5302 return err;
5303
6181e5cb 5304 devlink_health_reporter_recovery_done(reporter);
c8e1da0b 5305 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_HEALTHY;
6ec8b6cd 5306 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
c8e1da0b
EBE		 5307
5308 return 0;
5309}
5310
5311static void
5312devlink_health_dump_clear(struct devlink_health_reporter *reporter)
5313{
5314 if (!reporter->dump_fmsg)
5315 return;
5316 devlink_fmsg_free(reporter->dump_fmsg);
5317 reporter->dump_fmsg = NULL;
5318}
5319
5320static int devlink_health_do_dump(struct devlink_health_reporter *reporter,
e7a98105
JP		 5321 void *priv_ctx,
5322 struct netlink_ext_ack *extack)
c8e1da0b
EBE		 5323{
5324 int err;
5325
5326 if (!reporter->ops->dump)
5327 return 0;
5328
5329 if (reporter->dump_fmsg)
5330 return 0;
5331
5332 reporter->dump_fmsg = devlink_fmsg_alloc();
5333 if (!reporter->dump_fmsg) {
5334 err = -ENOMEM;
5335 return err;
5336 }
5337
5338 err = devlink_fmsg_obj_nest_start(reporter->dump_fmsg);
5339 if (err)
5340 goto dump_err;
5341
5342 err = reporter->ops->dump(reporter, reporter->dump_fmsg,
e7a98105 5343 priv_ctx, extack);
c8e1da0b
EBE		 5344 if (err)
5345 goto dump_err;
5346
5347 err = devlink_fmsg_obj_nest_end(reporter->dump_fmsg);
5348 if (err)
5349 goto dump_err;
5350
5351 reporter->dump_ts = jiffies;
d279505b 5352 reporter->dump_real_ts = ktime_get_real_ns();
c8e1da0b
EBE		 5353
5354 return 0;
5355
5356dump_err:
5357 devlink_health_dump_clear(reporter);
5358 return err;
5359}
5360
5361int devlink_health_report(struct devlink_health_reporter *reporter,
5362 const char *msg, void *priv_ctx)
5363{
a0a21adb 5364 enum devlink_health_reporter_state prev_health_state;
c8e1da0b
EBE		 5365 struct devlink *devlink = reporter->devlink;
5366
5367 /* write a log message of the current error */
5368 WARN_ON(!msg);
5369 trace_devlink_health_report(devlink, reporter->ops->name, msg);
5370 reporter->error_count++;
a0a21adb
EBE		 5371 prev_health_state = reporter->health_state;
5372 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
6ec8b6cd 5373 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
c8e1da0b
EBE		 5374
5375 /* abort if the previous error wasn't recovered */
5376 if (reporter->auto_recover &&
a0a21adb 5377 (prev_health_state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY ||
c8e1da0b
EBE		 5378 jiffies - reporter->last_recovery_ts <
5379 msecs_to_jiffies(reporter->graceful_period))) {
5380 trace_devlink_health_recover_aborted(devlink,
5381 reporter->ops->name,
5382 reporter->health_state,
5383 jiffies -
5384 reporter->last_recovery_ts);
5385 return -ECANCELED;
5386 }
5387
5388 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
5389
48bb52c8
EBE		 5390 if (reporter->auto_dump) {
5391 mutex_lock(&reporter->dump_lock);
5392 /* store current dump of current error, for later analysis */
5393 devlink_health_do_dump(reporter, priv_ctx, NULL);
5394 mutex_unlock(&reporter->dump_lock);
5395 }
c8e1da0b
EBE		 5396
5397 if (reporter->auto_recover)
e7a98105
JP		 5398 return devlink_health_reporter_recover(reporter,
5399 priv_ctx, NULL);
c8e1da0b
EBE		 5400
5401 return 0;
5402}
5403EXPORT_SYMBOL_GPL(devlink_health_report);
5404
7afe335a 5405static struct devlink_health_reporter *
e44ef4e4
AL		 5406devlink_health_reporter_get_from_attrs(struct devlink *devlink,
5407 struct nlattr **attrs)
7afe335a 5408{
b587bdaf 5409 struct devlink_health_reporter *reporter;
7afe335a
EBE		 5410 char *reporter_name;
5411
e44ef4e4 5412 if (!attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME])
7afe335a
EBE		 5413 return NULL;
5414
e44ef4e4 5415 reporter_name = nla_data(attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME]);
b587bdaf
MS		 5416 mutex_lock(&devlink->reporters_lock);
5417 reporter = devlink_health_reporter_find_by_name(devlink, reporter_name);
5418 if (reporter)
5419 refcount_inc(&reporter->refcount);
5420 mutex_unlock(&devlink->reporters_lock);
5421 return reporter;
5422}
5423
e44ef4e4
AL		 5424static struct devlink_health_reporter *
5425devlink_health_reporter_get_from_info(struct devlink *devlink,
5426 struct genl_info *info)
5427{
5428 return devlink_health_reporter_get_from_attrs(devlink, info->attrs);
5429}
5430
5431static struct devlink_health_reporter *
5432devlink_health_reporter_get_from_cb(struct netlink_callback *cb)
5433{
ee85da53 5434 const struct genl_dumpit_info *info = genl_dumpit_info(cb);
e44ef4e4 5435 struct devlink_health_reporter *reporter;
ee85da53 5436 struct nlattr **attrs = info->attrs;
e44ef4e4 5437 struct devlink *devlink;
e44ef4e4
AL		 5438
5439 mutex_lock(&devlink_mutex);
5440 devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
5441 if (IS_ERR(devlink))
5442 goto unlock;
5443
5444 reporter = devlink_health_reporter_get_from_attrs(devlink, attrs);
5445 mutex_unlock(&devlink_mutex);
e44ef4e4
AL		 5446 return reporter;
5447unlock:
5448 mutex_unlock(&devlink_mutex);
e44ef4e4
AL		 5449 return NULL;
5450}
5451
b587bdaf
MS		 5452static void
5453devlink_health_reporter_put(struct devlink_health_reporter *reporter)
5454{
5455 refcount_dec(&reporter->refcount);
7afe335a
EBE		 5456}
5457
97ff3bd3
VG		 5458void
5459devlink_health_reporter_state_update(struct devlink_health_reporter *reporter,
5460 enum devlink_health_reporter_state state)
5461{
5462 if (WARN_ON(state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY &&
5463 state != DEVLINK_HEALTH_REPORTER_STATE_ERROR))
5464 return;
5465
5466 if (reporter->health_state == state)
5467 return;
5468
5469 reporter->health_state = state;
5470 trace_devlink_health_reporter_state_update(reporter->devlink,
5471 reporter->ops->name, state);
5472 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
5473}
5474EXPORT_SYMBOL_GPL(devlink_health_reporter_state_update);
5475
7afe335a
EBE		 5476static int devlink_nl_cmd_health_reporter_get_doit(struct sk_buff *skb,
5477 struct genl_info *info)
5478{
5479 struct devlink *devlink = info->user_ptr[0];
5480 struct devlink_health_reporter *reporter;
5481 struct sk_buff *msg;
5482 int err;
5483
5484 reporter = devlink_health_reporter_get_from_info(devlink, info);
5485 if (!reporter)
5486 return -EINVAL;
5487
5488 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
b587bdaf
MS		 5489 if (!msg) {
5490 err = -ENOMEM;
5491 goto out;
5492 }
7afe335a
EBE		 5493
5494 err = devlink_nl_health_reporter_fill(msg, devlink, reporter,
5495 DEVLINK_CMD_HEALTH_REPORTER_GET,
5496 info->snd_portid, info->snd_seq,
5497 0);
5498 if (err) {
5499 nlmsg_free(msg);
b587bdaf 5500 goto out;
7afe335a
EBE		 5501 }
5502
b587bdaf
MS		 5503 err = genlmsg_reply(msg, info);
5504out:
5505 devlink_health_reporter_put(reporter);
5506 return err;
7afe335a
EBE		 5507}
5508
5509static int
5510devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg,
5511 struct netlink_callback *cb)
5512{
5513 struct devlink_health_reporter *reporter;
5514 struct devlink *devlink;
5515 int start = cb->args[0];
5516 int idx = 0;
5517 int err;
5518
5519 mutex_lock(&devlink_mutex);
5520 list_for_each_entry(devlink, &devlink_list, list) {
5521 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
5522 continue;
b587bdaf 5523 mutex_lock(&devlink->reporters_lock);
7afe335a
EBE		 5524 list_for_each_entry(reporter, &devlink->reporter_list,
5525 list) {
5526 if (idx < start) {
5527 idx++;
5528 continue;
5529 }
5530 err = devlink_nl_health_reporter_fill(msg, devlink,
5531 reporter,
5532 DEVLINK_CMD_HEALTH_REPORTER_GET,
5533 NETLINK_CB(cb->skb).portid,
5534 cb->nlh->nlmsg_seq,
5535 NLM_F_MULTI);
5536 if (err) {
b587bdaf 5537 mutex_unlock(&devlink->reporters_lock);
7afe335a
EBE		 5538 goto out;
5539 }
5540 idx++;
5541 }
b587bdaf 5542 mutex_unlock(&devlink->reporters_lock);
7afe335a
EBE		 5543 }
5544out:
5545 mutex_unlock(&devlink_mutex);
5546
5547 cb->args[0] = idx;
5548 return msg->len;
5549}
5550
a1e55ec0
EBE		 5551static int
5552devlink_nl_cmd_health_reporter_set_doit(struct sk_buff *skb,
5553 struct genl_info *info)
5554{
5555 struct devlink *devlink = info->user_ptr[0];
5556 struct devlink_health_reporter *reporter;
b587bdaf 5557 int err;
a1e55ec0
EBE		 5558
5559 reporter = devlink_health_reporter_get_from_info(devlink, info);
5560 if (!reporter)
5561 return -EINVAL;
5562
5563 if (!reporter->ops->recover &&
5564 (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] ||
b587bdaf
MS		 5565 info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])) {
5566 err = -EOPNOTSUPP;
5567 goto out;
5568 }
48bb52c8
EBE		 5569 if (!reporter->ops->dump &&
5570 info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]) {
5571 err = -EOPNOTSUPP;
5572 goto out;
5573 }
a1e55ec0
EBE		 5574
5575 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD])
5576 reporter->graceful_period =
5577 nla_get_u64(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD]);
5578
5579 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])
5580 reporter->auto_recover =
5581 nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER]);
5582
48bb52c8
EBE		 5583 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP])
5584 reporter->auto_dump =
5585 nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]);
5586
b587bdaf 5587 devlink_health_reporter_put(reporter);
a1e55ec0 5588 return 0;
b587bdaf
MS		 5589out:
5590 devlink_health_reporter_put(reporter);
5591 return err;
a1e55ec0
EBE		 5592}
5593
20a0943a
EBE		 5594static int devlink_nl_cmd_health_reporter_recover_doit(struct sk_buff *skb,
5595 struct genl_info *info)
5596{
5597 struct devlink *devlink = info->user_ptr[0];
5598 struct devlink_health_reporter *reporter;
b587bdaf 5599 int err;
20a0943a
EBE		 5600
5601 reporter = devlink_health_reporter_get_from_info(devlink, info);
5602 if (!reporter)
5603 return -EINVAL;
5604
e7a98105 5605 err = devlink_health_reporter_recover(reporter, NULL, info->extack);
b587bdaf
MS		 5606
5607 devlink_health_reporter_put(reporter);
5608 return err;
20a0943a
EBE		 5609}
5610
fca42a27
EBE		 5611static int devlink_nl_cmd_health_reporter_diagnose_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;
5616 struct devlink_fmsg *fmsg;
5617 int err;
5618
5619 reporter = devlink_health_reporter_get_from_info(devlink, info);
5620 if (!reporter)
5621 return -EINVAL;
5622
b587bdaf
MS		 5623 if (!reporter->ops->diagnose) {
5624 devlink_health_reporter_put(reporter);
fca42a27 5625 return -EOPNOTSUPP;
b587bdaf 5626 }
fca42a27
EBE		 5627
5628 fmsg = devlink_fmsg_alloc();
b587bdaf
MS		 5629 if (!fmsg) {
5630 devlink_health_reporter_put(reporter);
fca42a27 5631 return -ENOMEM;
b587bdaf 5632 }
fca42a27
EBE		 5633
5634 err = devlink_fmsg_obj_nest_start(fmsg);
5635 if (err)
5636 goto out;
5637
e7a98105 5638 err = reporter->ops->diagnose(reporter, fmsg, info->extack);
fca42a27
EBE		 5639 if (err)
5640 goto out;
5641
5642 err = devlink_fmsg_obj_nest_end(fmsg);
5643 if (err)
5644 goto out;
5645
5646 err = devlink_fmsg_snd(fmsg, info,
5647 DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE, 0);
5648
5649out:
5650 devlink_fmsg_free(fmsg);
b587bdaf 5651 devlink_health_reporter_put(reporter);
fca42a27
EBE		 5652 return err;
5653}
5654
e44ef4e4
AL		 5655static int
5656devlink_nl_cmd_health_reporter_dump_get_dumpit(struct sk_buff *skb,
5657 struct netlink_callback *cb)
35455e23 5658{
35455e23 5659 struct devlink_health_reporter *reporter;
e44ef4e4 5660 u64 start = cb->args[0];
35455e23
EBE		 5661 int err;
5662
e44ef4e4 5663 reporter = devlink_health_reporter_get_from_cb(cb);
35455e23
EBE		 5664 if (!reporter)
5665 return -EINVAL;
5666
b587bdaf 5667 if (!reporter->ops->dump) {
e44ef4e4
AL		 5668 err = -EOPNOTSUPP;
5669 goto out;
b587bdaf 5670 }
35455e23 5671 mutex_lock(&reporter->dump_lock);
e44ef4e4 5672 if (!start) {
e7a98105 5673 err = devlink_health_do_dump(reporter, NULL, cb->extack);
e44ef4e4
AL		 5674 if (err)
5675 goto unlock;
5676 cb->args[1] = reporter->dump_ts;
5677 }
5678 if (!reporter->dump_fmsg || cb->args[1] != reporter->dump_ts) {
5679 NL_SET_ERR_MSG_MOD(cb->extack, "Dump trampled, please retry");
5680 err = -EAGAIN;
5681 goto unlock;
5682 }
35455e23 5683
e44ef4e4
AL		 5684 err = devlink_fmsg_dumpit(reporter->dump_fmsg, skb, cb,
5685 DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET);
5686unlock:
35455e23 5687 mutex_unlock(&reporter->dump_lock);
e44ef4e4 5688out:
b587bdaf 5689 devlink_health_reporter_put(reporter);
35455e23
EBE		 5690 return err;
5691}
5692
5693static int
5694devlink_nl_cmd_health_reporter_dump_clear_doit(struct sk_buff *skb,
5695 struct genl_info *info)
5696{
5697 struct devlink *devlink = info->user_ptr[0];
5698 struct devlink_health_reporter *reporter;
5699
5700 reporter = devlink_health_reporter_get_from_info(devlink, info);
5701 if (!reporter)
5702 return -EINVAL;
5703
b587bdaf
MS		 5704 if (!reporter->ops->dump) {
5705 devlink_health_reporter_put(reporter);
35455e23 5706 return -EOPNOTSUPP;
b587bdaf 5707 }
35455e23
EBE		 5708
5709 mutex_lock(&reporter->dump_lock);
5710 devlink_health_dump_clear(reporter);
5711 mutex_unlock(&reporter->dump_lock);
b587bdaf 5712 devlink_health_reporter_put(reporter);
35455e23
EBE		 5713 return 0;
5714}
5715
0f420b6c
IS		 5716struct devlink_stats {
5717 u64 rx_bytes;
5718 u64 rx_packets;
5719 struct u64_stats_sync syncp;
5720};
5721
1e8c6619
IS		 5722/**
5723 * struct devlink_trap_policer_item - Packet trap policer attributes.
5724 * @policer: Immutable packet trap policer attributes.
5725 * @rate: Rate in packets / sec.
5726 * @burst: Burst size in packets.
5727 * @list: trap_policer_list member.
5728 *
5729 * Describes packet trap policer attributes. Created by devlink during trap
5730 * policer registration.
5731 */
5732struct devlink_trap_policer_item {
5733 const struct devlink_trap_policer *policer;
5734 u64 rate;
5735 u64 burst;
5736 struct list_head list;
5737};
5738
0f420b6c
IS		 5739/**
5740 * struct devlink_trap_group_item - Packet trap group attributes.
5741 * @group: Immutable packet trap group attributes.
0f420b6c
IS		 5742 * @list: trap_group_list member.
5743 * @stats: Trap group statistics.
5744 *
5745 * Describes packet trap group attributes. Created by devlink during trap
a09b37fc 5746 * group registration.
0f420b6c
IS		 5747 */
5748struct devlink_trap_group_item {
5749 const struct devlink_trap_group *group;
0f420b6c
IS		 5750 struct list_head list;
5751 struct devlink_stats __percpu *stats;
5752};
5753
5754/**
5755 * struct devlink_trap_item - Packet trap attributes.
5756 * @trap: Immutable packet trap attributes.
5757 * @group_item: Associated group item.
5758 * @list: trap_list member.
5759 * @action: Trap action.
5760 * @stats: Trap statistics.
5761 * @priv: Driver private information.
5762 *
5763 * Describes both mutable and immutable packet trap attributes. Created by
5764 * devlink during trap registration and used for all trap related operations.
5765 */
5766struct devlink_trap_item {
5767 const struct devlink_trap *trap;
5768 struct devlink_trap_group_item *group_item;
5769 struct list_head list;
5770 enum devlink_trap_action action;
5771 struct devlink_stats __percpu *stats;
5772 void *priv;
5773};
5774
1e8c6619
IS		 5775static struct devlink_trap_policer_item *
5776devlink_trap_policer_item_lookup(struct devlink *devlink, u32 id)
5777{
5778 struct devlink_trap_policer_item *policer_item;
5779
5780 list_for_each_entry(policer_item, &devlink->trap_policer_list, list) {
5781 if (policer_item->policer->id == id)
5782 return policer_item;
5783 }
5784
5785 return NULL;
5786}
5787
0f420b6c
IS		 5788static struct devlink_trap_item *
5789devlink_trap_item_lookup(struct devlink *devlink, const char *name)
5790{
5791 struct devlink_trap_item *trap_item;
5792
5793 list_for_each_entry(trap_item, &devlink->trap_list, list) {
5794 if (!strcmp(trap_item->trap->name, name))
5795 return trap_item;
5796 }
5797
5798 return NULL;
5799}
5800
5801static struct devlink_trap_item *
5802devlink_trap_item_get_from_info(struct devlink *devlink,
5803 struct genl_info *info)
5804{
5805 struct nlattr *attr;
5806
5807 if (!info->attrs[DEVLINK_ATTR_TRAP_NAME])
5808 return NULL;
5809 attr = info->attrs[DEVLINK_ATTR_TRAP_NAME];
5810
5811 return devlink_trap_item_lookup(devlink, nla_data(attr));
5812}
5813
5814static int
5815devlink_trap_action_get_from_info(struct genl_info *info,
5816 enum devlink_trap_action *p_trap_action)
5817{
5818 u8 val;
5819
5820 val = nla_get_u8(info->attrs[DEVLINK_ATTR_TRAP_ACTION]);
5821 switch (val) {
5822 case DEVLINK_TRAP_ACTION_DROP: /* fall-through */
5823 case DEVLINK_TRAP_ACTION_TRAP:
5824 *p_trap_action = val;
5825 break;
5826 default:
5827 return -EINVAL;
5828 }
5829
5830 return 0;
5831}
5832
5833static int devlink_trap_metadata_put(struct sk_buff *msg,
5834 const struct devlink_trap *trap)
5835{
5836 struct nlattr *attr;
5837
5838 attr = nla_nest_start(msg, DEVLINK_ATTR_TRAP_METADATA);
5839 if (!attr)
5840 return -EMSGSIZE;
5841
5842 if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_IN_PORT) &&
5843 nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_IN_PORT))
5844 goto nla_put_failure;
85b0589e
JP		 5845 if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_FA_COOKIE) &&
5846 nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_FA_COOKIE))
5847 goto nla_put_failure;
0f420b6c
IS		 5848
5849 nla_nest_end(msg, attr);
5850
5851 return 0;
5852
5853nla_put_failure:
5854 nla_nest_cancel(msg, attr);
5855 return -EMSGSIZE;
5856}
5857
5858static void devlink_trap_stats_read(struct devlink_stats __percpu *trap_stats,
5859 struct devlink_stats *stats)
5860{
5861 int i;
5862
5863 memset(stats, 0, sizeof(*stats));
5864 for_each_possible_cpu(i) {
5865 struct devlink_stats *cpu_stats;
5866 u64 rx_packets, rx_bytes;
5867 unsigned int start;
5868
5869 cpu_stats = per_cpu_ptr(trap_stats, i);
5870 do {
5871 start = u64_stats_fetch_begin_irq(&cpu_stats->syncp);
5872 rx_packets = cpu_stats->rx_packets;
5873 rx_bytes = cpu_stats->rx_bytes;
5874 } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start));
5875
5876 stats->rx_packets += rx_packets;
5877 stats->rx_bytes += rx_bytes;
5878 }
5879}
5880
5881static int devlink_trap_stats_put(struct sk_buff *msg,
5882 struct devlink_stats __percpu *trap_stats)
5883{
5884 struct devlink_stats stats;
5885 struct nlattr *attr;
5886
5887 devlink_trap_stats_read(trap_stats, &stats);
5888
5889 attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
5890 if (!attr)
5891 return -EMSGSIZE;
5892
5893 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_PACKETS,
5894 stats.rx_packets, DEVLINK_ATTR_PAD))
5895 goto nla_put_failure;
5896
5897 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_BYTES,
5898 stats.rx_bytes, DEVLINK_ATTR_PAD))
5899 goto nla_put_failure;
5900
5901 nla_nest_end(msg, attr);
5902
5903 return 0;
5904
5905nla_put_failure:
5906 nla_nest_cancel(msg, attr);
5907 return -EMSGSIZE;
5908}
5909
5910static int devlink_nl_trap_fill(struct sk_buff *msg, struct devlink *devlink,
5911 const struct devlink_trap_item *trap_item,
5912 enum devlink_command cmd, u32 portid, u32 seq,
5913 int flags)
5914{
5915 struct devlink_trap_group_item *group_item = trap_item->group_item;
5916 void *hdr;
5917 int err;
5918
5919 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
5920 if (!hdr)
5921 return -EMSGSIZE;
5922
5923 if (devlink_nl_put_handle(msg, devlink))
5924 goto nla_put_failure;
5925
5926 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
5927 group_item->group->name))
5928 goto nla_put_failure;
5929
5930 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_NAME, trap_item->trap->name))
5931 goto nla_put_failure;
5932
5933 if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_TYPE, trap_item->trap->type))
5934 goto nla_put_failure;
5935
5936 if (trap_item->trap->generic &&
5937 nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
5938 goto nla_put_failure;
5939
5940 if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_ACTION, trap_item->action))
5941 goto nla_put_failure;
5942
5943 err = devlink_trap_metadata_put(msg, trap_item->trap);
5944 if (err)
5945 goto nla_put_failure;
5946
5947 err = devlink_trap_stats_put(msg, trap_item->stats);
5948 if (err)
5949 goto nla_put_failure;
5950
5951 genlmsg_end(msg, hdr);
5952
5953 return 0;
5954
5955nla_put_failure:
5956 genlmsg_cancel(msg, hdr);
5957 return -EMSGSIZE;
5958}
5959
5960static int devlink_nl_cmd_trap_get_doit(struct sk_buff *skb,
5961 struct genl_info *info)
5962{
5963 struct netlink_ext_ack *extack = info->extack;
5964 struct devlink *devlink = info->user_ptr[0];
5965 struct devlink_trap_item *trap_item;
5966 struct sk_buff *msg;
5967 int err;
5968
5969 if (list_empty(&devlink->trap_list))
5970 return -EOPNOTSUPP;
5971
5972 trap_item = devlink_trap_item_get_from_info(devlink, info);
5973 if (!trap_item) {
5974 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
5975 return -ENOENT;
5976 }
5977
5978 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5979 if (!msg)
5980 return -ENOMEM;
5981
5982 err = devlink_nl_trap_fill(msg, devlink, trap_item,
5983 DEVLINK_CMD_TRAP_NEW, info->snd_portid,
5984 info->snd_seq, 0);
5985 if (err)
5986 goto err_trap_fill;
5987
5988 return genlmsg_reply(msg, info);
5989
5990err_trap_fill:
5991 nlmsg_free(msg);
5992 return err;
5993}
5994
5995static int devlink_nl_cmd_trap_get_dumpit(struct sk_buff *msg,
5996 struct netlink_callback *cb)
5997{
5998 struct devlink_trap_item *trap_item;
5999 struct devlink *devlink;
6000 int start = cb->args[0];
6001 int idx = 0;
6002 int err;
6003
6004 mutex_lock(&devlink_mutex);
6005 list_for_each_entry(devlink, &devlink_list, list) {
6006 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
6007 continue;
6008 mutex_lock(&devlink->lock);
6009 list_for_each_entry(trap_item, &devlink->trap_list, list) {
6010 if (idx < start) {
6011 idx++;
6012 continue;
6013 }
6014 err = devlink_nl_trap_fill(msg, devlink, trap_item,
6015 DEVLINK_CMD_TRAP_NEW,
6016 NETLINK_CB(cb->skb).portid,
6017 cb->nlh->nlmsg_seq,
6018 NLM_F_MULTI);
6019 if (err) {
6020 mutex_unlock(&devlink->lock);
6021 goto out;
6022 }
6023 idx++;
6024 }
6025 mutex_unlock(&devlink->lock);
6026 }
6027out:
6028 mutex_unlock(&devlink_mutex);
6029
6030 cb->args[0] = idx;
6031 return msg->len;
6032}
6033
6034static int __devlink_trap_action_set(struct devlink *devlink,
6035 struct devlink_trap_item *trap_item,
6036 enum devlink_trap_action trap_action,
6037 struct netlink_ext_ack *extack)
6038{
6039 int err;
6040
6041 if (trap_item->action != trap_action &&
6042 trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP) {
6043 NL_SET_ERR_MSG_MOD(extack, "Cannot change action of non-drop traps. Skipping");
6044 return 0;
6045 }
6046
6047 err = devlink->ops->trap_action_set(devlink, trap_item->trap,
6048 trap_action);
6049 if (err)
6050 return err;
6051
6052 trap_item->action = trap_action;
6053
6054 return 0;
6055}
6056
6057static int devlink_trap_action_set(struct devlink *devlink,
6058 struct devlink_trap_item *trap_item,
6059 struct genl_info *info)
6060{
6061 enum devlink_trap_action trap_action;
6062 int err;
6063
6064 if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
6065 return 0;
6066
6067 err = devlink_trap_action_get_from_info(info, &trap_action);
6068 if (err) {
6069 NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
6070 return -EINVAL;
6071 }
6072
6073 return __devlink_trap_action_set(devlink, trap_item, trap_action,
6074 info->extack);
6075}
6076
6077static int devlink_nl_cmd_trap_set_doit(struct sk_buff *skb,
6078 struct genl_info *info)
6079{
6080 struct netlink_ext_ack *extack = info->extack;
6081 struct devlink *devlink = info->user_ptr[0];
6082 struct devlink_trap_item *trap_item;
6083 int err;
6084
6085 if (list_empty(&devlink->trap_list))
6086 return -EOPNOTSUPP;
6087
6088 trap_item = devlink_trap_item_get_from_info(devlink, info);
6089 if (!trap_item) {
6090 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
6091 return -ENOENT;
6092 }
6093
6094 err = devlink_trap_action_set(devlink, trap_item, info);
6095 if (err)
6096 return err;
6097
6098 return 0;
6099}
6100
6101static struct devlink_trap_group_item *
6102devlink_trap_group_item_lookup(struct devlink *devlink, const char *name)
6103{
6104 struct devlink_trap_group_item *group_item;
6105
6106 list_for_each_entry(group_item, &devlink->trap_group_list, list) {
6107 if (!strcmp(group_item->group->name, name))
6108 return group_item;
6109 }
6110
6111 return NULL;
6112}
6113
107f1678
IS		 6114static struct devlink_trap_group_item *
6115devlink_trap_group_item_lookup_by_id(struct devlink *devlink, u16 id)
6116{
6117 struct devlink_trap_group_item *group_item;
6118
6119 list_for_each_entry(group_item, &devlink->trap_group_list, list) {
6120 if (group_item->group->id == id)
6121 return group_item;
6122 }
6123
6124 return NULL;
6125}
6126
0f420b6c
IS		 6127static struct devlink_trap_group_item *
6128devlink_trap_group_item_get_from_info(struct devlink *devlink,
6129 struct genl_info *info)
6130{
6131 char *name;
6132
6133 if (!info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME])
6134 return NULL;
6135 name = nla_data(info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME]);
6136
6137 return devlink_trap_group_item_lookup(devlink, name);
6138}
6139
6140static int
6141devlink_nl_trap_group_fill(struct sk_buff *msg, struct devlink *devlink,
6142 const struct devlink_trap_group_item *group_item,
6143 enum devlink_command cmd, u32 portid, u32 seq,
6144 int flags)
6145{
6146 void *hdr;
6147 int err;
6148
6149 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
6150 if (!hdr)
6151 return -EMSGSIZE;
6152
6153 if (devlink_nl_put_handle(msg, devlink))
6154 goto nla_put_failure;
6155
6156 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
6157 group_item->group->name))
6158 goto nla_put_failure;
6159
6160 if (group_item->group->generic &&
6161 nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
6162 goto nla_put_failure;
6163
6164 err = devlink_trap_stats_put(msg, group_item->stats);
6165 if (err)
6166 goto nla_put_failure;
6167
6168 genlmsg_end(msg, hdr);
6169
6170 return 0;
6171
6172nla_put_failure:
6173 genlmsg_cancel(msg, hdr);
6174 return -EMSGSIZE;
6175}
6176
6177static int devlink_nl_cmd_trap_group_get_doit(struct sk_buff *skb,
6178 struct genl_info *info)
6179{
6180 struct netlink_ext_ack *extack = info->extack;
6181 struct devlink *devlink = info->user_ptr[0];
6182 struct devlink_trap_group_item *group_item;
6183 struct sk_buff *msg;
6184 int err;
6185
6186 if (list_empty(&devlink->trap_group_list))
6187 return -EOPNOTSUPP;
6188
6189 group_item = devlink_trap_group_item_get_from_info(devlink, info);
6190 if (!group_item) {
6191 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
6192 return -ENOENT;
6193 }
6194
6195 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6196 if (!msg)
6197 return -ENOMEM;
6198
6199 err = devlink_nl_trap_group_fill(msg, devlink, group_item,
6200 DEVLINK_CMD_TRAP_GROUP_NEW,
6201 info->snd_portid, info->snd_seq, 0);
6202 if (err)
6203 goto err_trap_group_fill;
6204
6205 return genlmsg_reply(msg, info);
6206
6207err_trap_group_fill:
6208 nlmsg_free(msg);
6209 return err;
6210}
6211
6212static int devlink_nl_cmd_trap_group_get_dumpit(struct sk_buff *msg,
6213 struct netlink_callback *cb)
6214{
6215 enum devlink_command cmd = DEVLINK_CMD_TRAP_GROUP_NEW;
6216 struct devlink_trap_group_item *group_item;
6217 u32 portid = NETLINK_CB(cb->skb).portid;
6218 struct devlink *devlink;
6219 int start = cb->args[0];
6220 int idx = 0;
6221 int err;
6222
6223 mutex_lock(&devlink_mutex);
6224 list_for_each_entry(devlink, &devlink_list, list) {
6225 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
6226 continue;
6227 mutex_lock(&devlink->lock);
6228 list_for_each_entry(group_item, &devlink->trap_group_list,
6229 list) {
6230 if (idx < start) {
6231 idx++;
6232 continue;
6233 }
6234 err = devlink_nl_trap_group_fill(msg, devlink,
6235 group_item, cmd,
6236 portid,
6237 cb->nlh->nlmsg_seq,
6238 NLM_F_MULTI);
6239 if (err) {
6240 mutex_unlock(&devlink->lock);
6241 goto out;
6242 }
6243 idx++;
6244 }
6245 mutex_unlock(&devlink->lock);
6246 }
6247out:
6248 mutex_unlock(&devlink_mutex);
6249
6250 cb->args[0] = idx;
6251 return msg->len;
6252}
6253
6254static int
6255__devlink_trap_group_action_set(struct devlink *devlink,
6256 struct devlink_trap_group_item *group_item,
6257 enum devlink_trap_action trap_action,
6258 struct netlink_ext_ack *extack)
6259{
6260 const char *group_name = group_item->group->name;
6261 struct devlink_trap_item *trap_item;
6262 int err;
6263
6264 list_for_each_entry(trap_item, &devlink->trap_list, list) {
107f1678 6265 if (strcmp(trap_item->group_item->group->name, group_name))
0f420b6c
IS		 6266 continue;
6267 err = __devlink_trap_action_set(devlink, trap_item,
6268 trap_action, extack);
6269 if (err)
6270 return err;
6271 }
6272
6273 return 0;
6274}
6275
6276static int
6277devlink_trap_group_action_set(struct devlink *devlink,
6278 struct devlink_trap_group_item *group_item,
6279 struct genl_info *info)
6280{
6281 enum devlink_trap_action trap_action;
6282 int err;
6283
6284 if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
6285 return 0;
6286
6287 err = devlink_trap_action_get_from_info(info, &trap_action);
6288 if (err) {
6289 NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
6290 return -EINVAL;
6291 }
6292
6293 err = __devlink_trap_group_action_set(devlink, group_item, trap_action,
6294 info->extack);
6295 if (err)
6296 return err;
6297
6298 return 0;
6299}
6300
6301static int devlink_nl_cmd_trap_group_set_doit(struct sk_buff *skb,
6302 struct genl_info *info)
6303{
6304 struct netlink_ext_ack *extack = info->extack;
6305 struct devlink *devlink = info->user_ptr[0];
6306 struct devlink_trap_group_item *group_item;
6307 int err;
6308
6309 if (list_empty(&devlink->trap_group_list))
6310 return -EOPNOTSUPP;
6311
6312 group_item = devlink_trap_group_item_get_from_info(devlink, info);
6313 if (!group_item) {
6314 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
6315 return -ENOENT;
6316 }
6317
6318 err = devlink_trap_group_action_set(devlink, group_item, info);
6319 if (err)
6320 return err;
6321
6322 return 0;
6323}
6324
1e8c6619
IS		 6325static struct devlink_trap_policer_item *
6326devlink_trap_policer_item_get_from_info(struct devlink *devlink,
6327 struct genl_info *info)
6328{
6329 u32 id;
6330
6331 if (!info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID])
6332 return NULL;
6333 id = nla_get_u32(info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID]);
6334
6335 return devlink_trap_policer_item_lookup(devlink, id);
6336}
6337
6338static int
6339devlink_trap_policer_stats_put(struct sk_buff *msg, struct devlink *devlink,
6340 const struct devlink_trap_policer *policer)
6341{
6342 struct nlattr *attr;
6343 u64 drops;
6344 int err;
6345
6346 if (!devlink->ops->trap_policer_counter_get)
6347 return 0;
6348
6349 err = devlink->ops->trap_policer_counter_get(devlink, policer, &drops);
6350 if (err)
6351 return err;
6352
6353 attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
6354 if (!attr)
6355 return -EMSGSIZE;
6356
6357 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_DROPPED, drops,
6358 DEVLINK_ATTR_PAD))
6359 goto nla_put_failure;
6360
6361 nla_nest_end(msg, attr);
6362
6363 return 0;
6364
6365nla_put_failure:
6366 nla_nest_cancel(msg, attr);
6367 return -EMSGSIZE;
6368}
6369
6370static int
6371devlink_nl_trap_policer_fill(struct sk_buff *msg, struct devlink *devlink,
6372 const struct devlink_trap_policer_item *policer_item,
6373 enum devlink_command cmd, u32 portid, u32 seq,
6374 int flags)
6375{
6376 void *hdr;
6377 int err;
6378
6379 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
6380 if (!hdr)
6381 return -EMSGSIZE;
6382
6383 if (devlink_nl_put_handle(msg, devlink))
6384 goto nla_put_failure;
6385
6386 if (nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID,
6387 policer_item->policer->id))
6388 goto nla_put_failure;
6389
6390 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_RATE,
6391 policer_item->rate, DEVLINK_ATTR_PAD))
6392 goto nla_put_failure;
6393
6394 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_BURST,
6395 policer_item->burst, DEVLINK_ATTR_PAD))
6396 goto nla_put_failure;
6397
6398 err = devlink_trap_policer_stats_put(msg, devlink,
6399 policer_item->policer);
6400 if (err)
6401 goto nla_put_failure;
6402
6403 genlmsg_end(msg, hdr);
6404
6405 return 0;
6406
6407nla_put_failure:
6408 genlmsg_cancel(msg, hdr);
6409 return -EMSGSIZE;
6410}
6411
6412static int devlink_nl_cmd_trap_policer_get_doit(struct sk_buff *skb,
6413 struct genl_info *info)
6414{
6415 struct devlink_trap_policer_item *policer_item;
6416 struct netlink_ext_ack *extack = info->extack;
6417 struct devlink *devlink = info->user_ptr[0];
6418 struct sk_buff *msg;
6419 int err;
6420
6421 if (list_empty(&devlink->trap_policer_list))
6422 return -EOPNOTSUPP;
6423
6424 policer_item = devlink_trap_policer_item_get_from_info(devlink, info);
6425 if (!policer_item) {
6426 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
6427 return -ENOENT;
6428 }
6429
6430 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6431 if (!msg)
6432 return -ENOMEM;
6433
6434 err = devlink_nl_trap_policer_fill(msg, devlink, policer_item,
6435 DEVLINK_CMD_TRAP_POLICER_NEW,
6436 info->snd_portid, info->snd_seq, 0);
6437 if (err)
6438 goto err_trap_policer_fill;
6439
6440 return genlmsg_reply(msg, info);
6441
6442err_trap_policer_fill:
6443 nlmsg_free(msg);
6444 return err;
6445}
6446
6447static int devlink_nl_cmd_trap_policer_get_dumpit(struct sk_buff *msg,
6448 struct netlink_callback *cb)
6449{
6450 enum devlink_command cmd = DEVLINK_CMD_TRAP_POLICER_NEW;
6451 struct devlink_trap_policer_item *policer_item;
6452 u32 portid = NETLINK_CB(cb->skb).portid;
6453 struct devlink *devlink;
6454 int start = cb->args[0];
6455 int idx = 0;
6456 int err;
6457
6458 mutex_lock(&devlink_mutex);
6459 list_for_each_entry(devlink, &devlink_list, list) {
6460 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
6461 continue;
6462 mutex_lock(&devlink->lock);
6463 list_for_each_entry(policer_item, &devlink->trap_policer_list,
6464 list) {
6465 if (idx < start) {
6466 idx++;
6467 continue;
6468 }
6469 err = devlink_nl_trap_policer_fill(msg, devlink,
6470 policer_item, cmd,
6471 portid,
6472 cb->nlh->nlmsg_seq,
6473 NLM_F_MULTI);
6474 if (err) {
6475 mutex_unlock(&devlink->lock);
6476 goto out;
6477 }
6478 idx++;
6479 }
6480 mutex_unlock(&devlink->lock);
6481 }
6482out:
6483 mutex_unlock(&devlink_mutex);
6484
6485 cb->args[0] = idx;
6486 return msg->len;
6487}
6488
6489static int
6490devlink_trap_policer_set(struct devlink *devlink,
6491 struct devlink_trap_policer_item *policer_item,
6492 struct genl_info *info)
6493{
6494 struct netlink_ext_ack *extack = info->extack;
6495 struct nlattr **attrs = info->attrs;
6496 u64 rate, burst;
6497 int err;
6498
6499 rate = policer_item->rate;
6500 burst = policer_item->burst;
6501
6502 if (attrs[DEVLINK_ATTR_TRAP_POLICER_RATE])
6503 rate = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_RATE]);
6504
6505 if (attrs[DEVLINK_ATTR_TRAP_POLICER_BURST])
6506 burst = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_BURST]);
6507
6508 if (rate < policer_item->policer->min_rate) {
6509 NL_SET_ERR_MSG_MOD(extack, "Policer rate lower than limit");
6510 return -EINVAL;
6511 }
6512
6513 if (rate > policer_item->policer->max_rate) {
6514 NL_SET_ERR_MSG_MOD(extack, "Policer rate higher than limit");
6515 return -EINVAL;
6516 }
6517
6518 if (burst < policer_item->policer->min_burst) {
6519 NL_SET_ERR_MSG_MOD(extack, "Policer burst size lower than limit");
6520 return -EINVAL;
6521 }
6522
6523 if (burst > policer_item->policer->max_burst) {
6524 NL_SET_ERR_MSG_MOD(extack, "Policer burst size higher than limit");
6525 return -EINVAL;
6526 }
6527
6528 err = devlink->ops->trap_policer_set(devlink, policer_item->policer,
6529 rate, burst, info->extack);
6530 if (err)
6531 return err;
6532
6533 policer_item->rate = rate;
6534 policer_item->burst = burst;
6535
6536 return 0;
6537}
6538
6539static int devlink_nl_cmd_trap_policer_set_doit(struct sk_buff *skb,
6540 struct genl_info *info)
6541{
6542 struct devlink_trap_policer_item *policer_item;
6543 struct netlink_ext_ack *extack = info->extack;
6544 struct devlink *devlink = info->user_ptr[0];
6545
6546 if (list_empty(&devlink->trap_policer_list))
6547 return -EOPNOTSUPP;
6548
6549 if (!devlink->ops->trap_policer_set)
6550 return -EOPNOTSUPP;
6551
6552 policer_item = devlink_trap_policer_item_get_from_info(devlink, info);
6553 if (!policer_item) {
6554 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
6555 return -ENOENT;
6556 }
6557
6558 return devlink_trap_policer_set(devlink, policer_item, info);
6559}
6560
bfcd3a46 6561static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = {
1e8c6619
IS		 6562 [DEVLINK_ATTR_UNSPEC] = { .strict_start_type =
6563 DEVLINK_ATTR_TRAP_POLICER_ID },
bfcd3a46
JP		 6564 [DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING },
6565 [DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING },
6566 [DEVLINK_ATTR_PORT_INDEX] = { .type = NLA_U32 },
6567 [DEVLINK_ATTR_PORT_TYPE] = { .type = NLA_U16 },
6568 [DEVLINK_ATTR_PORT_SPLIT_COUNT] = { .type = NLA_U32 },
bf797471
JP		 6569 [DEVLINK_ATTR_SB_INDEX] = { .type = NLA_U32 },
6570 [DEVLINK_ATTR_SB_POOL_INDEX] = { .type = NLA_U16 },
6571 [DEVLINK_ATTR_SB_POOL_TYPE] = { .type = NLA_U8 },
6572 [DEVLINK_ATTR_SB_POOL_SIZE] = { .type = NLA_U32 },
6573 [DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE] = { .type = NLA_U8 },
6574 [DEVLINK_ATTR_SB_THRESHOLD] = { .type = NLA_U32 },
6575 [DEVLINK_ATTR_SB_TC_INDEX] = { .type = NLA_U16 },
08f4b591 6576 [DEVLINK_ATTR_ESWITCH_MODE] = { .type = NLA_U16 },
59bfde01 6577 [DEVLINK_ATTR_ESWITCH_INLINE_MODE] = { .type = NLA_U8 },
f43e9b06 6578 [DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = { .type = NLA_U8 },
1555d204
AS		 6579 [DEVLINK_ATTR_DPIPE_TABLE_NAME] = { .type = NLA_NUL_STRING },
6580 [DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED] = { .type = NLA_U8 },
d9f9b9a4
AS		 6581 [DEVLINK_ATTR_RESOURCE_ID] = { .type = NLA_U64},
6582 [DEVLINK_ATTR_RESOURCE_SIZE] = { .type = NLA_U64},
e3b7ca18
MS		 6583 [DEVLINK_ATTR_PARAM_NAME] = { .type = NLA_NUL_STRING },
6584 [DEVLINK_ATTR_PARAM_TYPE] = { .type = NLA_U8 },
6585 [DEVLINK_ATTR_PARAM_VALUE_CMODE] = { .type = NLA_U8 },
d8db7ea5 6586 [DEVLINK_ATTR_REGION_NAME] = { .type = NLA_NUL_STRING },
866319bb 6587 [DEVLINK_ATTR_REGION_SNAPSHOT_ID] = { .type = NLA_U32 },
ff3b63b8
JK		 6588 [DEVLINK_ATTR_REGION_CHUNK_ADDR] = { .type = NLA_U64 },
6589 [DEVLINK_ATTR_REGION_CHUNK_LEN] = { .type = NLA_U64 },
7afe335a 6590 [DEVLINK_ATTR_HEALTH_REPORTER_NAME] = { .type = NLA_NUL_STRING },
a1e55ec0
EBE		 6591 [DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] = { .type = NLA_U64 },
6592 [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER] = { .type = NLA_U8 },
76726ccb
JK		 6593 [DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME] = { .type = NLA_NUL_STRING },
6594 [DEVLINK_ATTR_FLASH_UPDATE_COMPONENT] = { .type = NLA_NUL_STRING },
0f420b6c
IS		 6595 [DEVLINK_ATTR_TRAP_NAME] = { .type = NLA_NUL_STRING },
6596 [DEVLINK_ATTR_TRAP_ACTION] = { .type = NLA_U8 },
6597 [DEVLINK_ATTR_TRAP_GROUP_NAME] = { .type = NLA_NUL_STRING },
070c63f2
JP		 6598 [DEVLINK_ATTR_NETNS_PID] = { .type = NLA_U32 },
6599 [DEVLINK_ATTR_NETNS_FD] = { .type = NLA_U32 },
6600 [DEVLINK_ATTR_NETNS_ID] = { .type = NLA_U32 },
48bb52c8 6601 [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP] = { .type = NLA_U8 },
1e8c6619
IS		 6602 [DEVLINK_ATTR_TRAP_POLICER_ID] = { .type = NLA_U32 },
6603 [DEVLINK_ATTR_TRAP_POLICER_RATE] = { .type = NLA_U64 },
6604 [DEVLINK_ATTR_TRAP_POLICER_BURST] = { .type = NLA_U64 },
bfcd3a46
JP		 6605};
6606
6607static const struct genl_ops devlink_nl_ops[] = {
6608 {
6609 .cmd = DEVLINK_CMD_GET,
ef6243ac 6610 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46
JP		 6611 .doit = devlink_nl_cmd_get_doit,
6612 .dumpit = devlink_nl_cmd_get_dumpit,
1fc2257e 6613 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
bfcd3a46
JP		 6614 /* can be retrieved by unprivileged users */
6615 },
6616 {
6617 .cmd = DEVLINK_CMD_PORT_GET,
ef6243ac 6618 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46
JP		 6619 .doit = devlink_nl_cmd_port_get_doit,
6620 .dumpit = devlink_nl_cmd_port_get_dumpit,
bfcd3a46
JP		 6621 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
6622 /* can be retrieved by unprivileged users */
6623 },
6624 {
6625 .cmd = DEVLINK_CMD_PORT_SET,
ef6243ac 6626 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46 6627 .doit = devlink_nl_cmd_port_set_doit,
bfcd3a46
JP		 6628 .flags = GENL_ADMIN_PERM,
6629 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
6630 },
6631 {
6632 .cmd = DEVLINK_CMD_PORT_SPLIT,
ef6243ac 6633 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46 6634 .doit = devlink_nl_cmd_port_split_doit,
bfcd3a46 6635 .flags = GENL_ADMIN_PERM,
2406e7e5
AS		 6636 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6637 DEVLINK_NL_FLAG_NO_LOCK,
bfcd3a46
JP		 6638 },
6639 {
6640 .cmd = DEVLINK_CMD_PORT_UNSPLIT,
ef6243ac 6641 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46 6642 .doit = devlink_nl_cmd_port_unsplit_doit,
bfcd3a46 6643 .flags = GENL_ADMIN_PERM,
2406e7e5
AS		 6644 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6645 DEVLINK_NL_FLAG_NO_LOCK,
bfcd3a46 6646 },
bf797471
JP		 6647 {
6648 .cmd = DEVLINK_CMD_SB_GET,
ef6243ac 6649 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471
JP		 6650 .doit = devlink_nl_cmd_sb_get_doit,
6651 .dumpit = devlink_nl_cmd_sb_get_dumpit,
bf797471
JP		 6652 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6653 DEVLINK_NL_FLAG_NEED_SB,
6654 /* can be retrieved by unprivileged users */
6655 },
6656 {
6657 .cmd = DEVLINK_CMD_SB_POOL_GET,
ef6243ac 6658 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471
JP		 6659 .doit = devlink_nl_cmd_sb_pool_get_doit,
6660 .dumpit = devlink_nl_cmd_sb_pool_get_dumpit,
bf797471
JP		 6661 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6662 DEVLINK_NL_FLAG_NEED_SB,
6663 /* can be retrieved by unprivileged users */
6664 },
6665 {
6666 .cmd = DEVLINK_CMD_SB_POOL_SET,
ef6243ac 6667 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471 6668 .doit = devlink_nl_cmd_sb_pool_set_doit,
bf797471
JP		 6669 .flags = GENL_ADMIN_PERM,
6670 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6671 DEVLINK_NL_FLAG_NEED_SB,
6672 },
6673 {
6674 .cmd = DEVLINK_CMD_SB_PORT_POOL_GET,
ef6243ac 6675 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471
JP		 6676 .doit = devlink_nl_cmd_sb_port_pool_get_doit,
6677 .dumpit = devlink_nl_cmd_sb_port_pool_get_dumpit,
bf797471
JP		 6678 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
6679 DEVLINK_NL_FLAG_NEED_SB,
6680 /* can be retrieved by unprivileged users */
6681 },
6682 {
6683 .cmd = DEVLINK_CMD_SB_PORT_POOL_SET,
ef6243ac 6684 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471 6685 .doit = devlink_nl_cmd_sb_port_pool_set_doit,
bf797471
JP		 6686 .flags = GENL_ADMIN_PERM,
6687 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
6688 DEVLINK_NL_FLAG_NEED_SB,
6689 },
6690 {
6691 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_GET,
ef6243ac 6692 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471
JP		 6693 .doit = devlink_nl_cmd_sb_tc_pool_bind_get_doit,
6694 .dumpit = devlink_nl_cmd_sb_tc_pool_bind_get_dumpit,
bf797471
JP		 6695 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
6696 DEVLINK_NL_FLAG_NEED_SB,
6697 /* can be retrieved by unprivileged users */
6698 },
6699 {
6700 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_SET,
ef6243ac 6701 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471 6702 .doit = devlink_nl_cmd_sb_tc_pool_bind_set_doit,
bf797471
JP		 6703 .flags = GENL_ADMIN_PERM,
6704 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
6705 DEVLINK_NL_FLAG_NEED_SB,
6706 },
df38dafd
JP		 6707 {
6708 .cmd = DEVLINK_CMD_SB_OCC_SNAPSHOT,
ef6243ac 6709 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
df38dafd 6710 .doit = devlink_nl_cmd_sb_occ_snapshot_doit,
df38dafd
JP		 6711 .flags = GENL_ADMIN_PERM,
6712 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
2406e7e5 6713 DEVLINK_NL_FLAG_NEED_SB,
df38dafd
JP		 6714 },
6715 {
6716 .cmd = DEVLINK_CMD_SB_OCC_MAX_CLEAR,
ef6243ac 6717 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
df38dafd 6718 .doit = devlink_nl_cmd_sb_occ_max_clear_doit,
df38dafd
JP		 6719 .flags = GENL_ADMIN_PERM,
6720 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
2406e7e5 6721 DEVLINK_NL_FLAG_NEED_SB,
df38dafd 6722 },
08f4b591 6723 {
adf200f3 6724 .cmd = DEVLINK_CMD_ESWITCH_GET,
ef6243ac 6725 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
adf200f3 6726 .doit = devlink_nl_cmd_eswitch_get_doit,
08f4b591 6727 .flags = GENL_ADMIN_PERM,
98fed6eb
PP		 6728 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6729 DEVLINK_NL_FLAG_NO_LOCK,
08f4b591
OG		 6730 },
6731 {
adf200f3 6732 .cmd = DEVLINK_CMD_ESWITCH_SET,
ef6243ac 6733 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
adf200f3 6734 .doit = devlink_nl_cmd_eswitch_set_doit,
08f4b591 6735 .flags = GENL_ADMIN_PERM,
7ac1cc9a
JK		 6736 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6737 DEVLINK_NL_FLAG_NO_LOCK,
08f4b591 6738 },
1555d204
AS		 6739 {
6740 .cmd = DEVLINK_CMD_DPIPE_TABLE_GET,
ef6243ac 6741 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1555d204 6742 .doit = devlink_nl_cmd_dpipe_table_get,
1555d204 6743 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
67ae686b 6744 /* can be retrieved by unprivileged users */
1555d204
AS		 6745 },
6746 {
6747 .cmd = DEVLINK_CMD_DPIPE_ENTRIES_GET,
ef6243ac 6748 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1555d204 6749 .doit = devlink_nl_cmd_dpipe_entries_get,
1555d204 6750 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
67ae686b 6751 /* can be retrieved by unprivileged users */
1555d204
AS		 6752 },
6753 {
6754 .cmd = DEVLINK_CMD_DPIPE_HEADERS_GET,
ef6243ac 6755 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1555d204 6756 .doit = devlink_nl_cmd_dpipe_headers_get,
1555d204 6757 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
67ae686b 6758 /* can be retrieved by unprivileged users */
1555d204
AS		 6759 },
6760 {
6761 .cmd = DEVLINK_CMD_DPIPE_TABLE_COUNTERS_SET,
ef6243ac 6762 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1555d204 6763 .doit = devlink_nl_cmd_dpipe_table_counters_set,
1555d204
AS		 6764 .flags = GENL_ADMIN_PERM,
6765 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6766 },
d9f9b9a4
AS		 6767 {
6768 .cmd = DEVLINK_CMD_RESOURCE_SET,
ef6243ac 6769 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
d9f9b9a4 6770 .doit = devlink_nl_cmd_resource_set,
d9f9b9a4
AS		 6771 .flags = GENL_ADMIN_PERM,
6772 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6773 },
6774 {
6775 .cmd = DEVLINK_CMD_RESOURCE_DUMP,
ef6243ac 6776 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
d9f9b9a4 6777 .doit = devlink_nl_cmd_resource_dump,
d9f9b9a4 6778 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
67ae686b 6779 /* can be retrieved by unprivileged users */
d9f9b9a4 6780 },
2d8dc5bb
AS		 6781 {
6782 .cmd = DEVLINK_CMD_RELOAD,
ef6243ac 6783 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2d8dc5bb 6784 .doit = devlink_nl_cmd_reload,
2d8dc5bb
AS		 6785 .flags = GENL_ADMIN_PERM,
6786 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6787 DEVLINK_NL_FLAG_NO_LOCK,
6788 },
45f05def
MS		 6789 {
6790 .cmd = DEVLINK_CMD_PARAM_GET,
ef6243ac 6791 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
45f05def
MS		 6792 .doit = devlink_nl_cmd_param_get_doit,
6793 .dumpit = devlink_nl_cmd_param_get_dumpit,
45f05def
MS		 6794 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6795 /* can be retrieved by unprivileged users */
6796 },
e3b7ca18
MS		 6797 {
6798 .cmd = DEVLINK_CMD_PARAM_SET,
ef6243ac 6799 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
e3b7ca18 6800 .doit = devlink_nl_cmd_param_set_doit,
e3b7ca18
MS		 6801 .flags = GENL_ADMIN_PERM,
6802 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6803 },
f4601dee
VV		 6804 {
6805 .cmd = DEVLINK_CMD_PORT_PARAM_GET,
ef6243ac 6806 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
f4601dee
VV		 6807 .doit = devlink_nl_cmd_port_param_get_doit,
6808 .dumpit = devlink_nl_cmd_port_param_get_dumpit,
f4601dee
VV		 6809 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
6810 /* can be retrieved by unprivileged users */
6811 },
9c54873b
VV		 6812 {
6813 .cmd = DEVLINK_CMD_PORT_PARAM_SET,
ef6243ac 6814 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
9c54873b 6815 .doit = devlink_nl_cmd_port_param_set_doit,
9c54873b
VV		 6816 .flags = GENL_ADMIN_PERM,
6817 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
6818 },
d8db7ea5
AV		 6819 {
6820 .cmd = DEVLINK_CMD_REGION_GET,
ef6243ac 6821 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
d8db7ea5
AV		 6822 .doit = devlink_nl_cmd_region_get_doit,
6823 .dumpit = devlink_nl_cmd_region_get_dumpit,
d8db7ea5
AV		 6824 .flags = GENL_ADMIN_PERM,
6825 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6826 },
b9a17abf
JK		 6827 {
6828 .cmd = DEVLINK_CMD_REGION_NEW,
6829 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
6830 .doit = devlink_nl_cmd_region_new,
6831 .flags = GENL_ADMIN_PERM,
6832 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6833 },
866319bb
AV		 6834 {
6835 .cmd = DEVLINK_CMD_REGION_DEL,
ef6243ac 6836 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
866319bb 6837 .doit = devlink_nl_cmd_region_del,
866319bb
AV		 6838 .flags = GENL_ADMIN_PERM,
6839 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6840 },
4e54795a
AV		 6841 {
6842 .cmd = DEVLINK_CMD_REGION_READ,
ee85da53
JP		 6843 .validate = GENL_DONT_VALIDATE_STRICT |
6844 GENL_DONT_VALIDATE_DUMP_STRICT,
4e54795a 6845 .dumpit = devlink_nl_cmd_region_read_dumpit,
4e54795a
AV		 6846 .flags = GENL_ADMIN_PERM,
6847 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6848 },
f9cf2288
JK		 6849 {
6850 .cmd = DEVLINK_CMD_INFO_GET,
ef6243ac 6851 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
f9cf2288
JK		 6852 .doit = devlink_nl_cmd_info_get_doit,
6853 .dumpit = devlink_nl_cmd_info_get_dumpit,
f9cf2288
JK		 6854 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6855 /* can be retrieved by unprivileged users */
6856 },
7afe335a
EBE		 6857 {
6858 .cmd = DEVLINK_CMD_HEALTH_REPORTER_GET,
ef6243ac 6859 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7afe335a
EBE		 6860 .doit = devlink_nl_cmd_health_reporter_get_doit,
6861 .dumpit = devlink_nl_cmd_health_reporter_get_dumpit,
b587bdaf
MS		 6862 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6863 DEVLINK_NL_FLAG_NO_LOCK,
7afe335a
EBE		 6864 /* can be retrieved by unprivileged users */
6865 },
a1e55ec0
EBE		 6866 {
6867 .cmd = DEVLINK_CMD_HEALTH_REPORTER_SET,
ef6243ac 6868 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
a1e55ec0 6869 .doit = devlink_nl_cmd_health_reporter_set_doit,
a1e55ec0 6870 .flags = GENL_ADMIN_PERM,
b587bdaf
MS		 6871 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6872 DEVLINK_NL_FLAG_NO_LOCK,
a1e55ec0 6873 },
20a0943a
EBE		 6874 {
6875 .cmd = DEVLINK_CMD_HEALTH_REPORTER_RECOVER,
ef6243ac 6876 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
20a0943a 6877 .doit = devlink_nl_cmd_health_reporter_recover_doit,
20a0943a 6878 .flags = GENL_ADMIN_PERM,
b587bdaf
MS		 6879 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6880 DEVLINK_NL_FLAG_NO_LOCK,
20a0943a 6881 },
fca42a27
EBE		 6882 {
6883 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE,
ef6243ac 6884 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
fca42a27 6885 .doit = devlink_nl_cmd_health_reporter_diagnose_doit,
fca42a27 6886 .flags = GENL_ADMIN_PERM,
b587bdaf
MS		 6887 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6888 DEVLINK_NL_FLAG_NO_LOCK,
fca42a27 6889 },
35455e23
EBE		 6890 {
6891 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET,
82a843de
JP		 6892 .validate = GENL_DONT_VALIDATE_STRICT |
6893 GENL_DONT_VALIDATE_DUMP_STRICT,
e44ef4e4 6894 .dumpit = devlink_nl_cmd_health_reporter_dump_get_dumpit,
35455e23
EBE		 6895 .flags = GENL_ADMIN_PERM,
6896 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6897 DEVLINK_NL_FLAG_NO_LOCK,
6898 },
6899 {
6900 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_CLEAR,
ef6243ac 6901 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
35455e23 6902 .doit = devlink_nl_cmd_health_reporter_dump_clear_doit,
35455e23
EBE		 6903 .flags = GENL_ADMIN_PERM,
6904 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6905 DEVLINK_NL_FLAG_NO_LOCK,
6906 },
76726ccb
JK		 6907 {
6908 .cmd = DEVLINK_CMD_FLASH_UPDATE,
ef6243ac 6909 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
76726ccb 6910 .doit = devlink_nl_cmd_flash_update,
76726ccb
JK		 6911 .flags = GENL_ADMIN_PERM,
6912 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6913 },
0f420b6c
IS		 6914 {
6915 .cmd = DEVLINK_CMD_TRAP_GET,
6916 .doit = devlink_nl_cmd_trap_get_doit,
6917 .dumpit = devlink_nl_cmd_trap_get_dumpit,
6918 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6919 /* can be retrieved by unprivileged users */
6920 },
6921 {
6922 .cmd = DEVLINK_CMD_TRAP_SET,
6923 .doit = devlink_nl_cmd_trap_set_doit,
6924 .flags = GENL_ADMIN_PERM,
6925 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6926 },
6927 {
6928 .cmd = DEVLINK_CMD_TRAP_GROUP_GET,
6929 .doit = devlink_nl_cmd_trap_group_get_doit,
6930 .dumpit = devlink_nl_cmd_trap_group_get_dumpit,
6931 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6932 /* can be retrieved by unprivileged users */
6933 },
6934 {
6935 .cmd = DEVLINK_CMD_TRAP_GROUP_SET,
6936 .doit = devlink_nl_cmd_trap_group_set_doit,
6937 .flags = GENL_ADMIN_PERM,
6938 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6939 },
1e8c6619
IS		 6940 {
6941 .cmd = DEVLINK_CMD_TRAP_POLICER_GET,
6942 .doit = devlink_nl_cmd_trap_policer_get_doit,
6943 .dumpit = devlink_nl_cmd_trap_policer_get_dumpit,
6944 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6945 /* can be retrieved by unprivileged users */
6946 },
6947 {
6948 .cmd = DEVLINK_CMD_TRAP_POLICER_SET,
6949 .doit = devlink_nl_cmd_trap_policer_set_doit,
6950 .flags = GENL_ADMIN_PERM,
6951 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6952 },
bfcd3a46
JP		 6953};
6954
56989f6d 6955static struct genl_family devlink_nl_family __ro_after_init = {
489111e5
JB		 6956 .name = DEVLINK_GENL_NAME,
6957 .version = DEVLINK_GENL_VERSION,
6958 .maxattr = DEVLINK_ATTR_MAX,
3b0f31f2 6959 .policy = devlink_nl_policy,
489111e5
JB		 6960 .netnsok = true,
6961 .pre_doit = devlink_nl_pre_doit,
6962 .post_doit = devlink_nl_post_doit,
6963 .module = THIS_MODULE,
6964 .ops = devlink_nl_ops,
6965 .n_ops = ARRAY_SIZE(devlink_nl_ops),
6966 .mcgrps = devlink_nl_mcgrps,
6967 .n_mcgrps = ARRAY_SIZE(devlink_nl_mcgrps),
6968};
6969
bfcd3a46
JP		 6970/**
6971 * devlink_alloc - Allocate new devlink instance resources
6972 *
6973 * @ops: ops
6974 * @priv_size: size of user private data
6975 *
6976 * Allocate new devlink instance resources, including devlink index
6977 * and name.
6978 */
6979struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size)
6980{
6981 struct devlink *devlink;
6982
be6fe1d8
JK		 6983 if (WARN_ON(!ops))
6984 return NULL;
6985
bfcd3a46
JP		 6986 devlink = kzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL);
6987 if (!devlink)
6988 return NULL;
6989 devlink->ops = ops;
12102436 6990 xa_init_flags(&devlink->snapshot_ids, XA_FLAGS_ALLOC);
8273fd84 6991 __devlink_net_set(devlink, &init_net);
bfcd3a46 6992 INIT_LIST_HEAD(&devlink->port_list);
bf797471 6993 INIT_LIST_HEAD(&devlink->sb_list);
1555d204 6994 INIT_LIST_HEAD_RCU(&devlink->dpipe_table_list);
d9f9b9a4 6995 INIT_LIST_HEAD(&devlink->resource_list);
eabaef18 6996 INIT_LIST_HEAD(&devlink->param_list);
b16ebe92 6997 INIT_LIST_HEAD(&devlink->region_list);
a0bdcc59 6998 INIT_LIST_HEAD(&devlink->reporter_list);
0f420b6c
IS		 6999 INIT_LIST_HEAD(&devlink->trap_list);
7000 INIT_LIST_HEAD(&devlink->trap_group_list);
1e8c6619 7001 INIT_LIST_HEAD(&devlink->trap_policer_list);
2406e7e5 7002 mutex_init(&devlink->lock);
b587bdaf 7003 mutex_init(&devlink->reporters_lock);
bfcd3a46
JP		 7004 return devlink;
7005}
7006EXPORT_SYMBOL_GPL(devlink_alloc);
7007
7008/**
7009 * devlink_register - Register devlink instance
7010 *
7011 * @devlink: devlink
eeaadd82 7012 * @dev: parent device
bfcd3a46
JP		 7013 */
7014int devlink_register(struct devlink *devlink, struct device *dev)
7015{
7016 mutex_lock(&devlink_mutex);
7017 devlink->dev = dev;
8273fd84 7018 devlink->registered = true;
bfcd3a46
JP		 7019 list_add_tail(&devlink->list, &devlink_list);
7020 devlink_notify(devlink, DEVLINK_CMD_NEW);
7021 mutex_unlock(&devlink_mutex);
7022 return 0;
7023}
7024EXPORT_SYMBOL_GPL(devlink_register);
7025
7026/**
7027 * devlink_unregister - Unregister devlink instance
7028 *
7029 * @devlink: devlink
7030 */
7031void devlink_unregister(struct devlink *devlink)
7032{
7033 mutex_lock(&devlink_mutex);
a0c76345
JP		 7034 WARN_ON(devlink_reload_supported(devlink) &&
7035 devlink->reload_enabled);
bfcd3a46
JP		 7036 devlink_notify(devlink, DEVLINK_CMD_DEL);
7037 list_del(&devlink->list);
7038 mutex_unlock(&devlink_mutex);
7039}
7040EXPORT_SYMBOL_GPL(devlink_unregister);
7041
a0c76345
JP		 7042/**
7043 * devlink_reload_enable - Enable reload of devlink instance
7044 *
7045 * @devlink: devlink
7046 *
7047 * Should be called at end of device initialization
7048 * process when reload operation is supported.
7049 */
7050void devlink_reload_enable(struct devlink *devlink)
7051{
7052 mutex_lock(&devlink_mutex);
7053 devlink->reload_enabled = true;
7054 mutex_unlock(&devlink_mutex);
7055}
7056EXPORT_SYMBOL_GPL(devlink_reload_enable);
7057
7058/**
7059 * devlink_reload_disable - Disable reload of devlink instance
7060 *
7061 * @devlink: devlink
7062 *
7063 * Should be called at the beginning of device cleanup
7064 * process when reload operation is supported.
7065 */
7066void devlink_reload_disable(struct devlink *devlink)
7067{
7068 mutex_lock(&devlink_mutex);
7069 /* Mutex is taken which ensures that no reload operation is in
7070 * progress while setting up forbidded flag.
7071 */
7072 devlink->reload_enabled = false;
7073 mutex_unlock(&devlink_mutex);
7074}
7075EXPORT_SYMBOL_GPL(devlink_reload_disable);
7076
bfcd3a46
JP		 7077/**
7078 * devlink_free - Free devlink instance resources
7079 *
7080 * @devlink: devlink
7081 */
7082void devlink_free(struct devlink *devlink)
7083{
b587bdaf 7084 mutex_destroy(&devlink->reporters_lock);
375cf8c6 7085 mutex_destroy(&devlink->lock);
1e8c6619 7086 WARN_ON(!list_empty(&devlink->trap_policer_list));
0f420b6c
IS		 7087 WARN_ON(!list_empty(&devlink->trap_group_list));
7088 WARN_ON(!list_empty(&devlink->trap_list));
b904aada
PP		 7089 WARN_ON(!list_empty(&devlink->reporter_list));
7090 WARN_ON(!list_empty(&devlink->region_list));
7091 WARN_ON(!list_empty(&devlink->param_list));
7092 WARN_ON(!list_empty(&devlink->resource_list));
7093 WARN_ON(!list_empty(&devlink->dpipe_table_list));
7094 WARN_ON(!list_empty(&devlink->sb_list));
7095 WARN_ON(!list_empty(&devlink->port_list));
7096
12102436
JK		 7097 xa_destroy(&devlink->snapshot_ids);
7098
bfcd3a46
JP		 7099 kfree(devlink);
7100}
7101EXPORT_SYMBOL_GPL(devlink_free);
7102
136bf27f
JP		 7103static void devlink_port_type_warn(struct work_struct *work)
7104{
7105 WARN(true, "Type was not set for devlink port.");
7106}
7107
7108static bool devlink_port_type_should_warn(struct devlink_port *devlink_port)
7109{
7110 /* Ignore CPU and DSA flavours. */
7111 return devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_CPU &&
7112 devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_DSA;
7113}
7114
4c582234 7115#define DEVLINK_PORT_TYPE_WARN_TIMEOUT (HZ * 3600)
136bf27f
JP		 7116
7117static void devlink_port_type_warn_schedule(struct devlink_port *devlink_port)
7118{
7119 if (!devlink_port_type_should_warn(devlink_port))
7120 return;
7121 /* Schedule a work to WARN in case driver does not set port
7122 * type within timeout.
7123 */
7124 schedule_delayed_work(&devlink_port->type_warn_dw,
7125 DEVLINK_PORT_TYPE_WARN_TIMEOUT);
7126}
7127
7128static void devlink_port_type_warn_cancel(struct devlink_port *devlink_port)
7129{
7130 if (!devlink_port_type_should_warn(devlink_port))
7131 return;
7132 cancel_delayed_work_sync(&devlink_port->type_warn_dw);
7133}
7134
bfcd3a46
JP		 7135/**
7136 * devlink_port_register - Register devlink port
7137 *
7138 * @devlink: devlink
7139 * @devlink_port: devlink port
eeaadd82 7140 * @port_index: driver-specific numerical identifier of the port
bfcd3a46
JP		 7141 *
7142 * Register devlink port with provided port index. User can use
7143 * any indexing, even hw-related one. devlink_port structure
7144 * is convenient to be embedded inside user driver private structure.
7145 * Note that the caller should take care of zeroing the devlink_port
7146 * structure.
7147 */
7148int devlink_port_register(struct devlink *devlink,
7149 struct devlink_port *devlink_port,
7150 unsigned int port_index)
7151{
2406e7e5 7152 mutex_lock(&devlink->lock);
bfcd3a46 7153 if (devlink_port_index_exists(devlink, port_index)) {
2406e7e5 7154 mutex_unlock(&devlink->lock);
bfcd3a46
JP		 7155 return -EEXIST;
7156 }
7157 devlink_port->devlink = devlink;
7158 devlink_port->index = port_index;
bfcd3a46 7159 devlink_port->registered = true;
b8f97554 7160 spin_lock_init(&devlink_port->type_lock);
bfcd3a46 7161 list_add_tail(&devlink_port->list, &devlink->port_list);
39e6160e 7162 INIT_LIST_HEAD(&devlink_port->param_list);
2406e7e5 7163 mutex_unlock(&devlink->lock);
136bf27f
JP		 7164 INIT_DELAYED_WORK(&devlink_port->type_warn_dw, &devlink_port_type_warn);
7165 devlink_port_type_warn_schedule(devlink_port);
bfcd3a46
JP		 7166 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
7167 return 0;
7168}
7169EXPORT_SYMBOL_GPL(devlink_port_register);
7170
7171/**
7172 * devlink_port_unregister - Unregister devlink port
7173 *
7174 * @devlink_port: devlink port
7175 */
7176void devlink_port_unregister(struct devlink_port *devlink_port)
7177{
2406e7e5
AS		 7178 struct devlink *devlink = devlink_port->devlink;
7179
136bf27f 7180 devlink_port_type_warn_cancel(devlink_port);
bfcd3a46 7181 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
2406e7e5 7182 mutex_lock(&devlink->lock);
bfcd3a46 7183 list_del(&devlink_port->list);
2406e7e5 7184 mutex_unlock(&devlink->lock);
bfcd3a46
JP		 7185}
7186EXPORT_SYMBOL_GPL(devlink_port_unregister);
7187
7188static void __devlink_port_type_set(struct devlink_port *devlink_port,
7189 enum devlink_port_type type,
7190 void *type_dev)
7191{
2b239e70
JP		 7192 if (WARN_ON(!devlink_port->registered))
7193 return;
136bf27f 7194 devlink_port_type_warn_cancel(devlink_port);
0f420b6c 7195 spin_lock_bh(&devlink_port->type_lock);
bfcd3a46
JP		 7196 devlink_port->type = type;
7197 devlink_port->type_dev = type_dev;
0f420b6c 7198 spin_unlock_bh(&devlink_port->type_lock);
bfcd3a46
JP		 7199 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
7200}
7201
7202/**
7203 * devlink_port_type_eth_set - Set port type to Ethernet
7204 *
7205 * @devlink_port: devlink port
7206 * @netdev: related netdevice
7207 */
7208void devlink_port_type_eth_set(struct devlink_port *devlink_port,
7209 struct net_device *netdev)
7210{
119c0b57
JP		 7211 const struct net_device_ops *ops = netdev->netdev_ops;
7212
746364f2
JP		 7213 /* If driver registers devlink port, it should set devlink port
7214 * attributes accordingly so the compat functions are called
7215 * and the original ops are not used.
7216 */
119c0b57 7217 if (ops->ndo_get_phys_port_name) {
746364f2
JP		 7218 /* Some drivers use the same set of ndos for netdevs
7219 * that have devlink_port registered and also for
7220 * those who don't. Make sure that ndo_get_phys_port_name
7221 * returns -EOPNOTSUPP here in case it is defined.
7222 * Warn if not.
7223 */
746364f2
JP		 7224 char name[IFNAMSIZ];
7225 int err;
7226
7227 err = ops->ndo_get_phys_port_name(netdev, name, sizeof(name));
7228 WARN_ON(err != -EOPNOTSUPP);
7229 }
119c0b57
JP		 7230 if (ops->ndo_get_port_parent_id) {
7231 /* Some drivers use the same set of ndos for netdevs
7232 * that have devlink_port registered and also for
7233 * those who don't. Make sure that ndo_get_port_parent_id
7234 * returns -EOPNOTSUPP here in case it is defined.
7235 * Warn if not.
7236 */
7237 struct netdev_phys_item_id ppid;
7238 int err;
7239
7240 err = ops->ndo_get_port_parent_id(netdev, &ppid);
7241 WARN_ON(err != -EOPNOTSUPP);
7242 }
773b1f38 7243 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH, netdev);
bfcd3a46
JP		 7244}
7245EXPORT_SYMBOL_GPL(devlink_port_type_eth_set);
7246
7247/**
7248 * devlink_port_type_ib_set - Set port type to InfiniBand
7249 *
7250 * @devlink_port: devlink port
7251 * @ibdev: related IB device
7252 */
7253void devlink_port_type_ib_set(struct devlink_port *devlink_port,
7254 struct ib_device *ibdev)
7255{
773b1f38 7256 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_IB, ibdev);
bfcd3a46
JP		 7257}
7258EXPORT_SYMBOL_GPL(devlink_port_type_ib_set);
7259
7260/**
7261 * devlink_port_type_clear - Clear port type
7262 *
7263 * @devlink_port: devlink port
7264 */
7265void devlink_port_type_clear(struct devlink_port *devlink_port)
7266{
773b1f38 7267 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET, NULL);
136bf27f 7268 devlink_port_type_warn_schedule(devlink_port);
bfcd3a46
JP		 7269}
7270EXPORT_SYMBOL_GPL(devlink_port_type_clear);
7271
378ef01b
PP		 7272static int __devlink_port_attrs_set(struct devlink_port *devlink_port,
7273 enum devlink_port_flavour flavour,
7274 const unsigned char *switch_id,
7275 unsigned char switch_id_len)
7276{
7277 struct devlink_port_attrs *attrs = &devlink_port->attrs;
7278
7279 if (WARN_ON(devlink_port->registered))
7280 return -EEXIST;
7281 attrs->set = true;
7282 attrs->flavour = flavour;
7283 if (switch_id) {
7284 attrs->switch_port = true;
7285 if (WARN_ON(switch_id_len > MAX_PHYS_ITEM_ID_LEN))
7286 switch_id_len = MAX_PHYS_ITEM_ID_LEN;
7287 memcpy(attrs->switch_id.id, switch_id, switch_id_len);
7288 attrs->switch_id.id_len = switch_id_len;
7289 } else {
7290 attrs->switch_port = false;
7291 }
7292 return 0;
7293}
7294
bfcd3a46 7295/**
b9ffcbaf 7296 * devlink_port_attrs_set - Set port attributes
bfcd3a46
JP		 7297 *
7298 * @devlink_port: devlink port
5ec1380a 7299 * @flavour: flavour of the port
b9ffcbaf
JP		 7300 * @port_number: number of the port that is facing user, for example
7301 * the front panel port number
7302 * @split: indicates if this is split port
7303 * @split_subport_number: if the port is split, this is the number
7304 * of subport.
bec5267c
JP		 7305 * @switch_id: if the port is part of switch, this is buffer with ID,
7306 * otwerwise this is NULL
7307 * @switch_id_len: length of the switch_id buffer
bfcd3a46 7308 */
b9ffcbaf 7309void devlink_port_attrs_set(struct devlink_port *devlink_port,
5ec1380a 7310 enum devlink_port_flavour flavour,
b9ffcbaf 7311 u32 port_number, bool split,
bec5267c
JP		 7312 u32 split_subport_number,
7313 const unsigned char *switch_id,
7314 unsigned char switch_id_len)
bfcd3a46 7315{
b9ffcbaf 7316 struct devlink_port_attrs *attrs = &devlink_port->attrs;
378ef01b 7317 int ret;
b9ffcbaf 7318
378ef01b
PP		 7319 ret = __devlink_port_attrs_set(devlink_port, flavour,
7320 switch_id, switch_id_len);
7321 if (ret)
45b86112 7322 return;
b9ffcbaf 7323 attrs->split = split;
378ef01b
PP		 7324 attrs->phys.port_number = port_number;
7325 attrs->phys.split_subport_number = split_subport_number;
bfcd3a46 7326}
b9ffcbaf 7327EXPORT_SYMBOL_GPL(devlink_port_attrs_set);
bfcd3a46 7328
98fd2d65
PP		 7329/**
7330 * devlink_port_attrs_pci_pf_set - Set PCI PF port attributes
7331 *
7332 * @devlink_port: devlink port
7333 * @pf: associated PF for the devlink port instance
7334 * @switch_id: if the port is part of switch, this is buffer with ID,
7335 * otherwise this is NULL
7336 * @switch_id_len: length of the switch_id buffer
7337 */
7338void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port,
7339 const unsigned char *switch_id,
7340 unsigned char switch_id_len, u16 pf)
7341{
7342 struct devlink_port_attrs *attrs = &devlink_port->attrs;
7343 int ret;
7344
7345 ret = __devlink_port_attrs_set(devlink_port,
7346 DEVLINK_PORT_FLAVOUR_PCI_PF,
7347 switch_id, switch_id_len);
7348 if (ret)
7349 return;
7350
7351 attrs->pci_pf.pf = pf;
7352}
7353EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_pf_set);
7354
e41b6bf3
PP		 7355/**
7356 * devlink_port_attrs_pci_vf_set - Set PCI VF port attributes
7357 *
7358 * @devlink_port: devlink port
7359 * @pf: associated PF for the devlink port instance
7360 * @vf: associated VF of a PF for the devlink port instance
7361 * @switch_id: if the port is part of switch, this is buffer with ID,
7362 * otherwise this is NULL
7363 * @switch_id_len: length of the switch_id buffer
7364 */
7365void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port,
7366 const unsigned char *switch_id,
7367 unsigned char switch_id_len,
7368 u16 pf, u16 vf)
7369{
7370 struct devlink_port_attrs *attrs = &devlink_port->attrs;
7371 int ret;
7372
7373 ret = __devlink_port_attrs_set(devlink_port,
7374 DEVLINK_PORT_FLAVOUR_PCI_VF,
7375 switch_id, switch_id_len);
7376 if (ret)
7377 return;
7378 attrs->pci_vf.pf = pf;
7379 attrs->pci_vf.vf = vf;
7380}
7381EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_vf_set);
7382
af3836df
JP		 7383static int __devlink_port_phys_port_name_get(struct devlink_port *devlink_port,
7384 char *name, size_t len)
08474c1a
JP		 7385{
7386 struct devlink_port_attrs *attrs = &devlink_port->attrs;
7387 int n = 0;
7388
7389 if (!attrs->set)
7390 return -EOPNOTSUPP;
7391
7392 switch (attrs->flavour) {
7393 case DEVLINK_PORT_FLAVOUR_PHYSICAL:
acf1ee44 7394 case DEVLINK_PORT_FLAVOUR_VIRTUAL:
08474c1a 7395 if (!attrs->split)
378ef01b 7396 n = snprintf(name, len, "p%u", attrs->phys.port_number);
08474c1a 7397 else
378ef01b
PP		 7398 n = snprintf(name, len, "p%us%u",
7399 attrs->phys.port_number,
7400 attrs->phys.split_subport_number);
08474c1a
JP		 7401 break;
7402 case DEVLINK_PORT_FLAVOUR_CPU:
7403 case DEVLINK_PORT_FLAVOUR_DSA:
7404 /* As CPU and DSA ports do not have a netdevice associated
7405 * case should not ever happen.
7406 */
7407 WARN_ON(1);
7408 return -EINVAL;
98fd2d65
PP		 7409 case DEVLINK_PORT_FLAVOUR_PCI_PF:
7410 n = snprintf(name, len, "pf%u", attrs->pci_pf.pf);
7411 break;
e41b6bf3
PP		 7412 case DEVLINK_PORT_FLAVOUR_PCI_VF:
7413 n = snprintf(name, len, "pf%uvf%u",
7414 attrs->pci_vf.pf, attrs->pci_vf.vf);
7415 break;
08474c1a
JP		 7416 }
7417
7418 if (n >= len)
7419 return -EINVAL;
7420
7421 return 0;
7422}
af3836df 7423
bf797471
JP		 7424int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
7425 u32 size, u16 ingress_pools_count,
7426 u16 egress_pools_count, u16 ingress_tc_count,
7427 u16 egress_tc_count)
7428{
7429 struct devlink_sb *devlink_sb;
7430 int err = 0;
7431
2406e7e5 7432 mutex_lock(&devlink->lock);
bf797471
JP		 7433 if (devlink_sb_index_exists(devlink, sb_index)) {
7434 err = -EEXIST;
7435 goto unlock;
7436 }
7437
7438 devlink_sb = kzalloc(sizeof(*devlink_sb), GFP_KERNEL);
7439 if (!devlink_sb) {
7440 err = -ENOMEM;
7441 goto unlock;
7442 }
7443 devlink_sb->index = sb_index;
7444 devlink_sb->size = size;
7445 devlink_sb->ingress_pools_count = ingress_pools_count;
7446 devlink_sb->egress_pools_count = egress_pools_count;
7447 devlink_sb->ingress_tc_count = ingress_tc_count;
7448 devlink_sb->egress_tc_count = egress_tc_count;
7449 list_add_tail(&devlink_sb->list, &devlink->sb_list);
7450unlock:
2406e7e5 7451 mutex_unlock(&devlink->lock);
bf797471
JP		 7452 return err;
7453}
7454EXPORT_SYMBOL_GPL(devlink_sb_register);
7455
7456void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index)
7457{
7458 struct devlink_sb *devlink_sb;
7459
2406e7e5 7460 mutex_lock(&devlink->lock);
bf797471
JP		 7461 devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
7462 WARN_ON(!devlink_sb);
7463 list_del(&devlink_sb->list);
2406e7e5 7464 mutex_unlock(&devlink->lock);
bf797471
JP		 7465 kfree(devlink_sb);
7466}
7467EXPORT_SYMBOL_GPL(devlink_sb_unregister);
7468
1555d204
AS		 7469/**
7470 * devlink_dpipe_headers_register - register dpipe headers
7471 *
7472 * @devlink: devlink
7473 * @dpipe_headers: dpipe header array
7474 *
7475 * Register the headers supported by hardware.
7476 */
7477int devlink_dpipe_headers_register(struct devlink *devlink,
7478 struct devlink_dpipe_headers *dpipe_headers)
7479{
2406e7e5 7480 mutex_lock(&devlink->lock);
1555d204 7481 devlink->dpipe_headers = dpipe_headers;
2406e7e5 7482 mutex_unlock(&devlink->lock);
1555d204
AS		 7483 return 0;
7484}
7485EXPORT_SYMBOL_GPL(devlink_dpipe_headers_register);
7486
7487/**
7488 * devlink_dpipe_headers_unregister - unregister dpipe headers
7489 *
7490 * @devlink: devlink
7491 *
7492 * Unregister the headers supported by hardware.
7493 */
7494void devlink_dpipe_headers_unregister(struct devlink *devlink)
7495{
2406e7e5 7496 mutex_lock(&devlink->lock);
1555d204 7497 devlink->dpipe_headers = NULL;
2406e7e5 7498 mutex_unlock(&devlink->lock);
1555d204
AS		 7499}
7500EXPORT_SYMBOL_GPL(devlink_dpipe_headers_unregister);
7501
7502/**
7503 * devlink_dpipe_table_counter_enabled - check if counter allocation
7504 * required
7505 * @devlink: devlink
7506 * @table_name: tables name
7507 *
7508 * Used by driver to check if counter allocation is required.
7509 * After counter allocation is turned on the table entries
7510 * are updated to include counter statistics.
7511 *
7512 * After that point on the driver must respect the counter
7513 * state so that each entry added to the table is added
7514 * with a counter.
7515 */
7516bool devlink_dpipe_table_counter_enabled(struct devlink *devlink,
7517 const char *table_name)
7518{
7519 struct devlink_dpipe_table *table;
7520 bool enabled;
7521
7522 rcu_read_lock();
7523 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2eb51c75 7524 table_name, devlink);
1555d204
AS		 7525 enabled = false;
7526 if (table)
7527 enabled = table->counters_enabled;
7528 rcu_read_unlock();
7529 return enabled;
7530}
7531EXPORT_SYMBOL_GPL(devlink_dpipe_table_counter_enabled);
7532
7533/**
7534 * devlink_dpipe_table_register - register dpipe table
7535 *
7536 * @devlink: devlink
7537 * @table_name: table name
7538 * @table_ops: table ops
7539 * @priv: priv
1555d204
AS		 7540 * @counter_control_extern: external control for counters
7541 */
7542int devlink_dpipe_table_register(struct devlink *devlink,
7543 const char *table_name,
7544 struct devlink_dpipe_table_ops *table_ops,
ffd3cdcc 7545 void *priv, bool counter_control_extern)
1555d204
AS		 7546{
7547 struct devlink_dpipe_table *table;
6132c1d9 7548 int err = 0;
1555d204 7549
ffd3cdcc
AS		 7550 if (WARN_ON(!table_ops->size_get))
7551 return -EINVAL;
7552
6132c1d9
MB		 7553 mutex_lock(&devlink->lock);
7554
2eb51c75
MB		 7555 if (devlink_dpipe_table_find(&devlink->dpipe_table_list, table_name,
7556 devlink)) {
6132c1d9
MB		 7557 err = -EEXIST;
7558 goto unlock;
7559 }
7560
1555d204 7561 table = kzalloc(sizeof(*table), GFP_KERNEL);
6132c1d9
MB		 7562 if (!table) {
7563 err = -ENOMEM;
7564 goto unlock;
7565 }
1555d204
AS		 7566
7567 table->name = table_name;
7568 table->table_ops = table_ops;
7569 table->priv = priv;
1555d204
AS		 7570 table->counter_control_extern = counter_control_extern;
7571
1555d204 7572 list_add_tail_rcu(&table->list, &devlink->dpipe_table_list);
6132c1d9 7573unlock:
2406e7e5 7574 mutex_unlock(&devlink->lock);
6132c1d9 7575 return err;
1555d204
AS		 7576}
7577EXPORT_SYMBOL_GPL(devlink_dpipe_table_register);
7578
7579/**
7580 * devlink_dpipe_table_unregister - unregister dpipe table
7581 *
7582 * @devlink: devlink
7583 * @table_name: table name
7584 */
7585void devlink_dpipe_table_unregister(struct devlink *devlink,
7586 const char *table_name)
7587{
7588 struct devlink_dpipe_table *table;
7589
2406e7e5 7590 mutex_lock(&devlink->lock);
1555d204 7591 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2eb51c75 7592 table_name, devlink);
1555d204
AS		 7593 if (!table)
7594 goto unlock;
7595 list_del_rcu(&table->list);
2406e7e5 7596 mutex_unlock(&devlink->lock);
1555d204
AS		 7597 kfree_rcu(table, rcu);
7598 return;
7599unlock:
2406e7e5 7600 mutex_unlock(&devlink->lock);
1555d204
AS		 7601}
7602EXPORT_SYMBOL_GPL(devlink_dpipe_table_unregister);
7603
d9f9b9a4
AS		 7604/**
7605 * devlink_resource_register - devlink resource register
7606 *
7607 * @devlink: devlink
7608 * @resource_name: resource's name
d9f9b9a4
AS		 7609 * @resource_size: resource's size
7610 * @resource_id: resource's id
eeaadd82
JK		 7611 * @parent_resource_id: resource's parent id
7612 * @size_params: size parameters
d9f9b9a4
AS		 7613 */
7614int devlink_resource_register(struct devlink *devlink,
7615 const char *resource_name,
d9f9b9a4
AS		 7616 u64 resource_size,
7617 u64 resource_id,
7618 u64 parent_resource_id,
fc56be47 7619 const struct devlink_resource_size_params *size_params)
d9f9b9a4
AS		 7620{
7621 struct devlink_resource *resource;
7622 struct list_head *resource_list;
14530746 7623 bool top_hierarchy;
d9f9b9a4
AS		 7624 int err = 0;
7625
14530746
DA		 7626 top_hierarchy = parent_resource_id == DEVLINK_RESOURCE_ID_PARENT_TOP;
7627
d9f9b9a4
AS		 7628 mutex_lock(&devlink->lock);
7629 resource = devlink_resource_find(devlink, NULL, resource_id);
7630 if (resource) {
7631 err = -EINVAL;
7632 goto out;
7633 }
7634
7635 resource = kzalloc(sizeof(*resource), GFP_KERNEL);
7636 if (!resource) {
7637 err = -ENOMEM;
7638 goto out;
7639 }
7640
7641 if (top_hierarchy) {
7642 resource_list = &devlink->resource_list;
7643 } else {
7644 struct devlink_resource *parent_resource;
7645
7646 parent_resource = devlink_resource_find(devlink, NULL,
7647 parent_resource_id);
7648 if (parent_resource) {
7649 resource_list = &parent_resource->resource_list;
7650 resource->parent = parent_resource;
7651 } else {
b75703de 7652 kfree(resource);
d9f9b9a4
AS		 7653 err = -EINVAL;
7654 goto out;
7655 }
7656 }
7657
7658 resource->name = resource_name;
7659 resource->size = resource_size;
7660 resource->size_new = resource_size;
7661 resource->id = resource_id;
d9f9b9a4 7662 resource->size_valid = true;
77d27096
JP		 7663 memcpy(&resource->size_params, size_params,
7664 sizeof(resource->size_params));
d9f9b9a4
AS		 7665 INIT_LIST_HEAD(&resource->resource_list);
7666 list_add_tail(&resource->list, resource_list);
7667out:
7668 mutex_unlock(&devlink->lock);
7669 return err;
7670}
7671EXPORT_SYMBOL_GPL(devlink_resource_register);
7672
7673/**
7674 * devlink_resources_unregister - free all resources
7675 *
7676 * @devlink: devlink
7677 * @resource: resource
7678 */
7679void devlink_resources_unregister(struct devlink *devlink,
7680 struct devlink_resource *resource)
7681{
7682 struct devlink_resource *tmp, *child_resource;
7683 struct list_head *resource_list;
7684
7685 if (resource)
7686 resource_list = &resource->resource_list;
7687 else
7688 resource_list = &devlink->resource_list;
7689
7690 if (!resource)
7691 mutex_lock(&devlink->lock);
7692
7693 list_for_each_entry_safe(child_resource, tmp, resource_list, list) {
7694 devlink_resources_unregister(devlink, child_resource);
7695 list_del(&child_resource->list);
7696 kfree(child_resource);
7697 }
7698
7699 if (!resource)
7700 mutex_unlock(&devlink->lock);
7701}
7702EXPORT_SYMBOL_GPL(devlink_resources_unregister);
7703
7704/**
7705 * devlink_resource_size_get - get and update size
7706 *
7707 * @devlink: devlink
7708 * @resource_id: the requested resource id
7709 * @p_resource_size: ptr to update
7710 */
7711int devlink_resource_size_get(struct devlink *devlink,
7712 u64 resource_id,
7713 u64 *p_resource_size)
7714{
7715 struct devlink_resource *resource;
7716 int err = 0;
7717
7718 mutex_lock(&devlink->lock);
7719 resource = devlink_resource_find(devlink, NULL, resource_id);
7720 if (!resource) {
7721 err = -EINVAL;
7722 goto out;
7723 }
7724 *p_resource_size = resource->size_new;
7725 resource->size = resource->size_new;
7726out:
7727 mutex_unlock(&devlink->lock);
7728 return err;
7729}
7730EXPORT_SYMBOL_GPL(devlink_resource_size_get);
7731
56dc7cd0
AS		 7732/**
7733 * devlink_dpipe_table_resource_set - set the resource id
7734 *
7735 * @devlink: devlink
7736 * @table_name: table name
7737 * @resource_id: resource id
7738 * @resource_units: number of resource's units consumed per table's entry
7739 */
7740int devlink_dpipe_table_resource_set(struct devlink *devlink,
7741 const char *table_name, u64 resource_id,
7742 u64 resource_units)
7743{
7744 struct devlink_dpipe_table *table;
7745 int err = 0;
7746
7747 mutex_lock(&devlink->lock);
7748 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2eb51c75 7749 table_name, devlink);
56dc7cd0
AS		 7750 if (!table) {
7751 err = -EINVAL;
7752 goto out;
7753 }
7754 table->resource_id = resource_id;
7755 table->resource_units = resource_units;
7756 table->resource_valid = true;
7757out:
7758 mutex_unlock(&devlink->lock);
7759 return err;
7760}
7761EXPORT_SYMBOL_GPL(devlink_dpipe_table_resource_set);
7762
fc56be47
JP		 7763/**
7764 * devlink_resource_occ_get_register - register occupancy getter
7765 *
7766 * @devlink: devlink
7767 * @resource_id: resource id
7768 * @occ_get: occupancy getter callback
7769 * @occ_get_priv: occupancy getter callback priv
7770 */
7771void devlink_resource_occ_get_register(struct devlink *devlink,
7772 u64 resource_id,
7773 devlink_resource_occ_get_t *occ_get,
7774 void *occ_get_priv)
7775{
7776 struct devlink_resource *resource;
7777
7778 mutex_lock(&devlink->lock);
7779 resource = devlink_resource_find(devlink, NULL, resource_id);
7780 if (WARN_ON(!resource))
7781 goto out;
7782 WARN_ON(resource->occ_get);
7783
7784 resource->occ_get = occ_get;
7785 resource->occ_get_priv = occ_get_priv;
7786out:
7787 mutex_unlock(&devlink->lock);
7788}
7789EXPORT_SYMBOL_GPL(devlink_resource_occ_get_register);
7790
7791/**
7792 * devlink_resource_occ_get_unregister - unregister occupancy getter
7793 *
7794 * @devlink: devlink
7795 * @resource_id: resource id
7796 */
7797void devlink_resource_occ_get_unregister(struct devlink *devlink,
7798 u64 resource_id)
7799{
7800 struct devlink_resource *resource;
7801
7802 mutex_lock(&devlink->lock);
7803 resource = devlink_resource_find(devlink, NULL, resource_id);
7804 if (WARN_ON(!resource))
7805 goto out;
7806 WARN_ON(!resource->occ_get);
7807
7808 resource->occ_get = NULL;
7809 resource->occ_get_priv = NULL;
7810out:
7811 mutex_unlock(&devlink->lock);
7812}
7813EXPORT_SYMBOL_GPL(devlink_resource_occ_get_unregister);
7814
39e6160e
VV		 7815static int devlink_param_verify(const struct devlink_param *param)
7816{
7817 if (!param || !param->name || !param->supported_cmodes)
7818 return -EINVAL;
7819 if (param->generic)
7820 return devlink_param_generic_verify(param);
7821 else
7822 return devlink_param_driver_verify(param);
7823}
7824
7825static int __devlink_params_register(struct devlink *devlink,
c1e5786d 7826 unsigned int port_index,
39e6160e
VV		 7827 struct list_head *param_list,
7828 const struct devlink_param *params,
c1e5786d
VV		 7829 size_t params_count,
7830 enum devlink_command reg_cmd,
7831 enum devlink_command unreg_cmd)
eabaef18
MS		 7832{
7833 const struct devlink_param *param = params;
7834 int i;
7835 int err;
7836
7837 mutex_lock(&devlink->lock);
7838 for (i = 0; i < params_count; i++, param++) {
39e6160e
VV		 7839 err = devlink_param_verify(param);
7840 if (err)
eabaef18 7841 goto rollback;
39e6160e 7842
c1e5786d
VV		 7843 err = devlink_param_register_one(devlink, port_index,
7844 param_list, param, reg_cmd);
eabaef18
MS		 7845 if (err)
7846 goto rollback;
7847 }
7848
7849 mutex_unlock(&devlink->lock);
7850 return 0;
7851
7852rollback:
7853 if (!i)
7854 goto unlock;
7855 for (param--; i > 0; i--, param--)
c1e5786d
VV		 7856 devlink_param_unregister_one(devlink, port_index, param_list,
7857 param, unreg_cmd);
eabaef18
MS		 7858unlock:
7859 mutex_unlock(&devlink->lock);
7860 return err;
7861}
39e6160e
VV		 7862
7863static void __devlink_params_unregister(struct devlink *devlink,
c1e5786d 7864 unsigned int port_index,
39e6160e
VV		 7865 struct list_head *param_list,
7866 const struct devlink_param *params,
c1e5786d
VV		 7867 size_t params_count,
7868 enum devlink_command cmd)
39e6160e
VV		 7869{
7870 const struct devlink_param *param = params;
7871 int i;
7872
7873 mutex_lock(&devlink->lock);
7874 for (i = 0; i < params_count; i++, param++)
c1e5786d
VV		 7875 devlink_param_unregister_one(devlink, 0, param_list, param,
7876 cmd);
39e6160e
VV		 7877 mutex_unlock(&devlink->lock);
7878}
7879
7880/**
7881 * devlink_params_register - register configuration parameters
7882 *
7883 * @devlink: devlink
7884 * @params: configuration parameters array
7885 * @params_count: number of parameters provided
7886 *
7887 * Register the configuration parameters supported by the driver.
7888 */
7889int devlink_params_register(struct devlink *devlink,
7890 const struct devlink_param *params,
7891 size_t params_count)
7892{
c1e5786d
VV		 7893 return __devlink_params_register(devlink, 0, &devlink->param_list,
7894 params, params_count,
7895 DEVLINK_CMD_PARAM_NEW,
7896 DEVLINK_CMD_PARAM_DEL);
39e6160e 7897}
eabaef18
MS		 7898EXPORT_SYMBOL_GPL(devlink_params_register);
7899
7900/**
7901 * devlink_params_unregister - unregister configuration parameters
7902 * @devlink: devlink
7903 * @params: configuration parameters to unregister
7904 * @params_count: number of parameters provided
7905 */
7906void devlink_params_unregister(struct devlink *devlink,
7907 const struct devlink_param *params,
7908 size_t params_count)
7909{
c1e5786d
VV		 7910 return __devlink_params_unregister(devlink, 0, &devlink->param_list,
7911 params, params_count,
7912 DEVLINK_CMD_PARAM_DEL);
eabaef18
MS		 7913}
7914EXPORT_SYMBOL_GPL(devlink_params_unregister);
7915
7c62cfb8
JP		 7916/**
7917 * devlink_params_publish - publish configuration parameters
7918 *
7919 * @devlink: devlink
7920 *
7921 * Publish previously registered configuration parameters.
7922 */
7923void devlink_params_publish(struct devlink *devlink)
7924{
7925 struct devlink_param_item *param_item;
7926
7927 list_for_each_entry(param_item, &devlink->param_list, list) {
7928 if (param_item->published)
7929 continue;
7930 param_item->published = true;
7931 devlink_param_notify(devlink, 0, param_item,
7932 DEVLINK_CMD_PARAM_NEW);
7933 }
7934}
7935EXPORT_SYMBOL_GPL(devlink_params_publish);
7936
7937/**
7938 * devlink_params_unpublish - unpublish configuration parameters
7939 *
7940 * @devlink: devlink
7941 *
7942 * Unpublish previously registered configuration parameters.
7943 */
7944void devlink_params_unpublish(struct devlink *devlink)
7945{
7946 struct devlink_param_item *param_item;
7947
7948 list_for_each_entry(param_item, &devlink->param_list, list) {
7949 if (!param_item->published)
7950 continue;
7951 param_item->published = false;
7952 devlink_param_notify(devlink, 0, param_item,
7953 DEVLINK_CMD_PARAM_DEL);
7954 }
7955}
7956EXPORT_SYMBOL_GPL(devlink_params_unpublish);
7957
39e6160e
VV		 7958/**
7959 * devlink_port_params_register - register port configuration parameters
7960 *
7961 * @devlink_port: devlink port
7962 * @params: configuration parameters array
7963 * @params_count: number of parameters provided
7964 *
7965 * Register the configuration parameters supported by the port.
7966 */
7967int devlink_port_params_register(struct devlink_port *devlink_port,
7968 const struct devlink_param *params,
7969 size_t params_count)
7970{
7971 return __devlink_params_register(devlink_port->devlink,
c1e5786d 7972 devlink_port->index,
39e6160e 7973 &devlink_port->param_list, params,
c1e5786d
VV		 7974 params_count,
7975 DEVLINK_CMD_PORT_PARAM_NEW,
7976 DEVLINK_CMD_PORT_PARAM_DEL);
39e6160e
VV		 7977}
7978EXPORT_SYMBOL_GPL(devlink_port_params_register);
7979
7980/**
7981 * devlink_port_params_unregister - unregister port configuration
7982 * parameters
7983 *
7984 * @devlink_port: devlink port
7985 * @params: configuration parameters array
7986 * @params_count: number of parameters provided
7987 */
7988void devlink_port_params_unregister(struct devlink_port *devlink_port,
7989 const struct devlink_param *params,
7990 size_t params_count)
7991{
7992 return __devlink_params_unregister(devlink_port->devlink,
c1e5786d 7993 devlink_port->index,
39e6160e 7994 &devlink_port->param_list,
c1e5786d
VV		 7995 params, params_count,
7996 DEVLINK_CMD_PORT_PARAM_DEL);
39e6160e
VV		 7997}
7998EXPORT_SYMBOL_GPL(devlink_port_params_unregister);
7999
ffd19b9a
VV		 8000static int
8001__devlink_param_driverinit_value_get(struct list_head *param_list, u32 param_id,
8002 union devlink_param_value *init_val)
ec01aeb1
MS		 8003{
8004 struct devlink_param_item *param_item;
8005
ffd19b9a 8006 param_item = devlink_param_find_by_id(param_list, param_id);
ec01aeb1
MS		 8007 if (!param_item)
8008 return -EINVAL;
8009
8010 if (!param_item->driverinit_value_valid ||
8011 !devlink_param_cmode_is_supported(param_item->param,
8012 DEVLINK_PARAM_CMODE_DRIVERINIT))
8013 return -EOPNOTSUPP;
8014
1276534c
MS		 8015 if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
8016 strcpy(init_val->vstr, param_item->driverinit_value.vstr);
8017 else
8018 *init_val = param_item->driverinit_value;
ec01aeb1
MS		 8019
8020 return 0;
8021}
ffd19b9a 8022
5473a7bd
VV		 8023static int
8024__devlink_param_driverinit_value_set(struct devlink *devlink,
c1e5786d 8025 unsigned int port_index,
5473a7bd
VV		 8026 struct list_head *param_list, u32 param_id,
8027 union devlink_param_value init_val,
8028 enum devlink_command cmd)
8029{
8030 struct devlink_param_item *param_item;
8031
8032 param_item = devlink_param_find_by_id(param_list, param_id);
8033 if (!param_item)
8034 return -EINVAL;
8035
8036 if (!devlink_param_cmode_is_supported(param_item->param,
8037 DEVLINK_PARAM_CMODE_DRIVERINIT))
8038 return -EOPNOTSUPP;
8039
8040 if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
8041 strcpy(param_item->driverinit_value.vstr, init_val.vstr);
8042 else
8043 param_item->driverinit_value = init_val;
8044 param_item->driverinit_value_valid = true;
8045
c1e5786d 8046 devlink_param_notify(devlink, port_index, param_item, cmd);
5473a7bd
VV		 8047 return 0;
8048}
8049
ffd19b9a
VV		 8050/**
8051 * devlink_param_driverinit_value_get - get configuration parameter
8052 * value for driver initializing
8053 *
8054 * @devlink: devlink
8055 * @param_id: parameter ID
8056 * @init_val: value of parameter in driverinit configuration mode
8057 *
8058 * This function should be used by the driver to get driverinit
8059 * configuration for initialization after reload command.
8060 */
8061int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
8062 union devlink_param_value *init_val)
8063{
97691069 8064 if (!devlink_reload_supported(devlink))
ffd19b9a
VV		 8065 return -EOPNOTSUPP;
8066
8067 return __devlink_param_driverinit_value_get(&devlink->param_list,
8068 param_id, init_val);
8069}
ec01aeb1
MS		 8070EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_get);
8071
8072/**
8073 * devlink_param_driverinit_value_set - set value of configuration
8074 * parameter for driverinit
8075 * configuration mode
8076 *
8077 * @devlink: devlink
8078 * @param_id: parameter ID
8079 * @init_val: value of parameter to set for driverinit configuration mode
8080 *
8081 * This function should be used by the driver to set driverinit
8082 * configuration mode default value.
8083 */
8084int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
8085 union devlink_param_value init_val)
8086{
c1e5786d 8087 return __devlink_param_driverinit_value_set(devlink, 0,
5473a7bd
VV		 8088 &devlink->param_list,
8089 param_id, init_val,
8090 DEVLINK_CMD_PARAM_NEW);
ec01aeb1
MS		 8091}
8092EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_set);
8093
ffd19b9a
VV		 8094/**
8095 * devlink_port_param_driverinit_value_get - get configuration parameter
8096 * value for driver initializing
8097 *
8098 * @devlink_port: devlink_port
8099 * @param_id: parameter ID
8100 * @init_val: value of parameter in driverinit configuration mode
8101 *
8102 * This function should be used by the driver to get driverinit
8103 * configuration for initialization after reload command.
8104 */
8105int devlink_port_param_driverinit_value_get(struct devlink_port *devlink_port,
8106 u32 param_id,
8107 union devlink_param_value *init_val)
8108{
8109 struct devlink *devlink = devlink_port->devlink;
8110
97691069 8111 if (!devlink_reload_supported(devlink))
ffd19b9a
VV		 8112 return -EOPNOTSUPP;
8113
8114 return __devlink_param_driverinit_value_get(&devlink_port->param_list,
8115 param_id, init_val);
8116}
8117EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_get);
8118
5473a7bd
VV		 8119/**
8120 * devlink_port_param_driverinit_value_set - set value of configuration
8121 * parameter for driverinit
8122 * configuration mode
8123 *
8124 * @devlink_port: devlink_port
8125 * @param_id: parameter ID
8126 * @init_val: value of parameter to set for driverinit configuration mode
8127 *
8128 * This function should be used by the driver to set driverinit
8129 * configuration mode default value.
8130 */
8131int devlink_port_param_driverinit_value_set(struct devlink_port *devlink_port,
8132 u32 param_id,
8133 union devlink_param_value init_val)
8134{
8135 return __devlink_param_driverinit_value_set(devlink_port->devlink,
c1e5786d 8136 devlink_port->index,
5473a7bd 8137 &devlink_port->param_list,
c1e5786d
VV		 8138 param_id, init_val,
8139 DEVLINK_CMD_PORT_PARAM_NEW);
5473a7bd
VV		 8140}
8141EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_set);
8142
ea601e17
MS		 8143/**
8144 * devlink_param_value_changed - notify devlink on a parameter's value
8145 * change. Should be called by the driver
8146 * right after the change.
8147 *
8148 * @devlink: devlink
8149 * @param_id: parameter ID
8150 *
8151 * This function should be used by the driver to notify devlink on value
8152 * change, excluding driverinit configuration mode.
8153 * For driverinit configuration mode driver should use the function
ea601e17
MS		 8154 */
8155void devlink_param_value_changed(struct devlink *devlink, u32 param_id)
8156{
8157 struct devlink_param_item *param_item;
8158
8159 param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
8160 WARN_ON(!param_item);
8161
c1e5786d 8162 devlink_param_notify(devlink, 0, param_item, DEVLINK_CMD_PARAM_NEW);
ea601e17
MS		 8163}
8164EXPORT_SYMBOL_GPL(devlink_param_value_changed);
8165
c1e5786d
VV		 8166/**
8167 * devlink_port_param_value_changed - notify devlink on a parameter's value
8168 * change. Should be called by the driver
8169 * right after the change.
8170 *
8171 * @devlink_port: devlink_port
8172 * @param_id: parameter ID
8173 *
8174 * This function should be used by the driver to notify devlink on value
8175 * change, excluding driverinit configuration mode.
8176 * For driverinit configuration mode driver should use the function
8177 * devlink_port_param_driverinit_value_set() instead.
8178 */
8179void devlink_port_param_value_changed(struct devlink_port *devlink_port,
8180 u32 param_id)
8181{
8182 struct devlink_param_item *param_item;
8183
8184 param_item = devlink_param_find_by_id(&devlink_port->param_list,
8185 param_id);
8186 WARN_ON(!param_item);
8187
8188 devlink_param_notify(devlink_port->devlink, devlink_port->index,
8189 param_item, DEVLINK_CMD_PORT_PARAM_NEW);
8190}
8191EXPORT_SYMBOL_GPL(devlink_port_param_value_changed);
8192
bde74ad1
MS		 8193/**
8194 * devlink_param_value_str_fill - Safely fill-up the string preventing
8195 * from overflow of the preallocated buffer
8196 *
8197 * @dst_val: destination devlink_param_value
8198 * @src: source buffer
8199 */
8200void devlink_param_value_str_fill(union devlink_param_value *dst_val,
8201 const char *src)
8202{
8203 size_t len;
8204
8205 len = strlcpy(dst_val->vstr, src, __DEVLINK_PARAM_MAX_STRING_VALUE);
8206 WARN_ON(len >= __DEVLINK_PARAM_MAX_STRING_VALUE);
8207}
8208EXPORT_SYMBOL_GPL(devlink_param_value_str_fill);
8209
b16ebe92
AV		 8210/**
8211 * devlink_region_create - create a new address region
8212 *
8213 * @devlink: devlink
e8937681 8214 * @ops: region operations and name
b16ebe92
AV		 8215 * @region_max_snapshots: Maximum supported number of snapshots for region
8216 * @region_size: size of region
8217 */
e8937681
JK		 8218struct devlink_region *
8219devlink_region_create(struct devlink *devlink,
8220 const struct devlink_region_ops *ops,
8221 u32 region_max_snapshots, u64 region_size)
b16ebe92
AV		 8222{
8223 struct devlink_region *region;
8224 int err = 0;
8225
a0a09f6b
JK		 8226 if (WARN_ON(!ops) || WARN_ON(!ops->destructor))
8227 return ERR_PTR(-EINVAL);
8228
b16ebe92
AV		 8229 mutex_lock(&devlink->lock);
8230
e8937681 8231 if (devlink_region_get_by_name(devlink, ops->name)) {
b16ebe92
AV		 8232 err = -EEXIST;
8233 goto unlock;
8234 }
8235
8236 region = kzalloc(sizeof(*region), GFP_KERNEL);
8237 if (!region) {
8238 err = -ENOMEM;
8239 goto unlock;
8240 }
8241
8242 region->devlink = devlink;
8243 region->max_snapshots = region_max_snapshots;
e8937681 8244 region->ops = ops;
b16ebe92
AV		 8245 region->size = region_size;
8246 INIT_LIST_HEAD(&region->snapshot_list);
8247 list_add_tail(&region->list, &devlink->region_list);
866319bb 8248 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
b16ebe92
AV		 8249
8250 mutex_unlock(&devlink->lock);
8251 return region;
8252
8253unlock:
8254 mutex_unlock(&devlink->lock);
8255 return ERR_PTR(err);
8256}
8257EXPORT_SYMBOL_GPL(devlink_region_create);
8258
8259/**
8260 * devlink_region_destroy - destroy address region
8261 *
8262 * @region: devlink region to destroy
8263 */
8264void devlink_region_destroy(struct devlink_region *region)
8265{
8266 struct devlink *devlink = region->devlink;
d7e52722 8267 struct devlink_snapshot *snapshot, *ts;
b16ebe92
AV		 8268
8269 mutex_lock(&devlink->lock);
d7e52722
AV		 8270
8271 /* Free all snapshots of region */
8272 list_for_each_entry_safe(snapshot, ts, &region->snapshot_list, list)
92b49822 8273 devlink_region_snapshot_del(region, snapshot);
d7e52722 8274
b16ebe92 8275 list_del(&region->list);
866319bb
AV		 8276
8277 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL);
b16ebe92
AV		 8278 mutex_unlock(&devlink->lock);
8279 kfree(region);
8280}
8281EXPORT_SYMBOL_GPL(devlink_region_destroy);
8282
ccadfa44 8283/**
b0efcae5 8284 * devlink_region_snapshot_id_get - get snapshot ID
ccadfa44
AV		 8285 *
8286 * This callback should be called when adding a new snapshot,
8287 * Driver should use the same id for multiple snapshots taken
8288 * on multiple regions at the same time/by the same trigger.
8289 *
12102436
JK		 8290 * The caller of this function must use devlink_region_snapshot_id_put
8291 * when finished creating regions using this id.
8292 *
7ef19d3b
JK		 8293 * Returns zero on success, or a negative error code on failure.
8294 *
ccadfa44 8295 * @devlink: devlink
7ef19d3b 8296 * @id: storage to return id
ccadfa44 8297 */
7ef19d3b 8298int devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id)
ccadfa44 8299{
7ef19d3b 8300 int err;
ccadfa44
AV		 8301
8302 mutex_lock(&devlink->lock);
7ef19d3b 8303 err = __devlink_region_snapshot_id_get(devlink, id);
ccadfa44
AV		 8304 mutex_unlock(&devlink->lock);
8305
7ef19d3b 8306 return err;
ccadfa44 8307}
b0efcae5 8308EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_get);
ccadfa44 8309
12102436
JK		 8310/**
8311 * devlink_region_snapshot_id_put - put snapshot ID reference
8312 *
8313 * This should be called by a driver after finishing creating snapshots
8314 * with an id. Doing so ensures that the ID can later be released in the
8315 * event that all snapshots using it have been destroyed.
8316 *
8317 * @devlink: devlink
8318 * @id: id to release reference on
8319 */
8320void devlink_region_snapshot_id_put(struct devlink *devlink, u32 id)
8321{
8322 mutex_lock(&devlink->lock);
8323 __devlink_snapshot_id_decrement(devlink, id);
8324 mutex_unlock(&devlink->lock);
8325}
8326EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_put);
8327
d7e52722
AV		 8328/**
8329 * devlink_region_snapshot_create - create a new snapshot
8330 * This will add a new snapshot of a region. The snapshot
8331 * will be stored on the region struct and can be accessed
6d82f67e 8332 * from devlink. This is useful for future analyses of snapshots.
d7e52722
AV		 8333 * Multiple snapshots can be created on a region.
8334 * The @snapshot_id should be obtained using the getter function.
8335 *
eeaadd82 8336 * @region: devlink region of the snapshot
d7e52722
AV		 8337 * @data: snapshot data
8338 * @snapshot_id: snapshot id to be created
d7e52722 8339 */
3a5e5234 8340int devlink_region_snapshot_create(struct devlink_region *region,
a0a09f6b 8341 u8 *data, u32 snapshot_id)
d7e52722
AV		 8342{
8343 struct devlink *devlink = region->devlink;
d7e52722
AV		 8344 int err;
8345
8346 mutex_lock(&devlink->lock);
cf80faee 8347 err = __devlink_region_snapshot_create(region, data, snapshot_id);
d7e52722 8348 mutex_unlock(&devlink->lock);
d7e52722 8349
d7e52722
AV		 8350 return err;
8351}
8352EXPORT_SYMBOL_GPL(devlink_region_snapshot_create);
8353
0f420b6c
IS		 8354#define DEVLINK_TRAP(_id, _type) \
8355 { \
8356 .type = DEVLINK_TRAP_TYPE_##_type, \
8357 .id = DEVLINK_TRAP_GENERIC_ID_##_id, \
8358 .name = DEVLINK_TRAP_GENERIC_NAME_##_id, \
8359 }
8360
8361static const struct devlink_trap devlink_trap_generic[] = {
391203ab
IS		 8362 DEVLINK_TRAP(SMAC_MC, DROP),
8363 DEVLINK_TRAP(VLAN_TAG_MISMATCH, DROP),
8364 DEVLINK_TRAP(INGRESS_VLAN_FILTER, DROP),
8365 DEVLINK_TRAP(INGRESS_STP_FILTER, DROP),
8366 DEVLINK_TRAP(EMPTY_TX_LIST, DROP),
8367 DEVLINK_TRAP(PORT_LOOPBACK_FILTER, DROP),
8368 DEVLINK_TRAP(BLACKHOLE_ROUTE, DROP),
8369 DEVLINK_TRAP(TTL_ERROR, EXCEPTION),
8370 DEVLINK_TRAP(TAIL_DROP, DROP),
6896cc4d
AC		 8371 DEVLINK_TRAP(NON_IP_PACKET, DROP),
8372 DEVLINK_TRAP(UC_DIP_MC_DMAC, DROP),
8373 DEVLINK_TRAP(DIP_LB, DROP),
8374 DEVLINK_TRAP(SIP_MC, DROP),
8375 DEVLINK_TRAP(SIP_LB, DROP),
8376 DEVLINK_TRAP(CORRUPTED_IP_HDR, DROP),
8377 DEVLINK_TRAP(IPV4_SIP_BC, DROP),
8378 DEVLINK_TRAP(IPV6_MC_DIP_RESERVED_SCOPE, DROP),
8379 DEVLINK_TRAP(IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE, DROP),
3b063ae5
AC		 8380 DEVLINK_TRAP(MTU_ERROR, EXCEPTION),
8381 DEVLINK_TRAP(UNRESOLVED_NEIGH, EXCEPTION),
8382 DEVLINK_TRAP(RPF, EXCEPTION),
8383 DEVLINK_TRAP(REJECT_ROUTE, EXCEPTION),
8384 DEVLINK_TRAP(IPV4_LPM_UNICAST_MISS, EXCEPTION),
8385 DEVLINK_TRAP(IPV6_LPM_UNICAST_MISS, EXCEPTION),
95f0ead8 8386 DEVLINK_TRAP(NON_ROUTABLE, DROP),
13c056ec 8387 DEVLINK_TRAP(DECAP_ERROR, EXCEPTION),
c3cae491 8388 DEVLINK_TRAP(OVERLAY_SMAC_MC, DROP),
ecd942a0
JP		 8389 DEVLINK_TRAP(INGRESS_FLOW_ACTION_DROP, DROP),
8390 DEVLINK_TRAP(EGRESS_FLOW_ACTION_DROP, DROP),
0f420b6c
IS		 8391};
8392
8393#define DEVLINK_TRAP_GROUP(_id) \
8394 { \
8395 .id = DEVLINK_TRAP_GROUP_GENERIC_ID_##_id, \
8396 .name = DEVLINK_TRAP_GROUP_GENERIC_NAME_##_id, \
8397 }
8398
8399static const struct devlink_trap_group devlink_trap_group_generic[] = {
391203ab
IS		 8400 DEVLINK_TRAP_GROUP(L2_DROPS),
8401 DEVLINK_TRAP_GROUP(L3_DROPS),
8402 DEVLINK_TRAP_GROUP(BUFFER_DROPS),
13c056ec 8403 DEVLINK_TRAP_GROUP(TUNNEL_DROPS),
ecd942a0 8404 DEVLINK_TRAP_GROUP(ACL_DROPS),
0f420b6c
IS		 8405};
8406
8407static int devlink_trap_generic_verify(const struct devlink_trap *trap)
8408{
8409 if (trap->id > DEVLINK_TRAP_GENERIC_ID_MAX)
8410 return -EINVAL;
8411
8412 if (strcmp(trap->name, devlink_trap_generic[trap->id].name))
8413 return -EINVAL;
8414
8415 if (trap->type != devlink_trap_generic[trap->id].type)
8416 return -EINVAL;
8417
8418 return 0;
8419}
8420
8421static int devlink_trap_driver_verify(const struct devlink_trap *trap)
8422{
8423 int i;
8424
8425 if (trap->id <= DEVLINK_TRAP_GENERIC_ID_MAX)
8426 return -EINVAL;
8427
8428 for (i = 0; i < ARRAY_SIZE(devlink_trap_generic); i++) {
8429 if (!strcmp(trap->name, devlink_trap_generic[i].name))
8430 return -EEXIST;
8431 }
8432
8433 return 0;
8434}
8435
8436static int devlink_trap_verify(const struct devlink_trap *trap)
8437{
107f1678 8438 if (!trap || !trap->name)
0f420b6c
IS		 8439 return -EINVAL;
8440
8441 if (trap->generic)
8442 return devlink_trap_generic_verify(trap);
8443 else
8444 return devlink_trap_driver_verify(trap);
8445}
8446
8447static int
8448devlink_trap_group_generic_verify(const struct devlink_trap_group *group)
8449{
8450 if (group->id > DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
8451 return -EINVAL;
8452
8453 if (strcmp(group->name, devlink_trap_group_generic[group->id].name))
8454 return -EINVAL;
8455
8456 return 0;
8457}
8458
8459static int
8460devlink_trap_group_driver_verify(const struct devlink_trap_group *group)
8461{
8462 int i;
8463
8464 if (group->id <= DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
8465 return -EINVAL;
8466
8467 for (i = 0; i < ARRAY_SIZE(devlink_trap_group_generic); i++) {
8468 if (!strcmp(group->name, devlink_trap_group_generic[i].name))
8469 return -EEXIST;
8470 }
8471
8472 return 0;
8473}
8474
8475static int devlink_trap_group_verify(const struct devlink_trap_group *group)
8476{
8477 if (group->generic)
8478 return devlink_trap_group_generic_verify(group);
8479 else
8480 return devlink_trap_group_driver_verify(group);
8481}
8482
8483static void
8484devlink_trap_group_notify(struct devlink *devlink,
8485 const struct devlink_trap_group_item *group_item,
8486 enum devlink_command cmd)
8487{
8488 struct sk_buff *msg;
8489 int err;
8490
8491 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_GROUP_NEW &&
8492 cmd != DEVLINK_CMD_TRAP_GROUP_DEL);
8493
8494 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8495 if (!msg)
8496 return;
8497
8498 err = devlink_nl_trap_group_fill(msg, devlink, group_item, cmd, 0, 0,
8499 0);
8500 if (err) {
8501 nlmsg_free(msg);
8502 return;
8503 }
8504
8505 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
8506 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
8507}
8508
0f420b6c
IS		 8509static int
8510devlink_trap_item_group_link(struct devlink *devlink,
8511 struct devlink_trap_item *trap_item)
8512{
107f1678 8513 u16 group_id = trap_item->trap->init_group_id;
0f420b6c
IS		 8514 struct devlink_trap_group_item *group_item;
8515
107f1678 8516 group_item = devlink_trap_group_item_lookup_by_id(devlink, group_id);
a09b37fc
IS		 8517 if (WARN_ON_ONCE(!group_item))
8518 return -EINVAL;
0f420b6c
IS		 8519
8520 trap_item->group_item = group_item;
8521
8522 return 0;
8523}
8524
0f420b6c
IS		 8525static void devlink_trap_notify(struct devlink *devlink,
8526 const struct devlink_trap_item *trap_item,
8527 enum devlink_command cmd)
8528{
8529 struct sk_buff *msg;
8530 int err;
8531
8532 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_NEW &&
8533 cmd != DEVLINK_CMD_TRAP_DEL);
8534
8535 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8536 if (!msg)
8537 return;
8538
8539 err = devlink_nl_trap_fill(msg, devlink, trap_item, cmd, 0, 0, 0);
8540 if (err) {
8541 nlmsg_free(msg);
8542 return;
8543 }
8544
8545 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
8546 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
8547}
8548
8549static int
8550devlink_trap_register(struct devlink *devlink,
8551 const struct devlink_trap *trap, void *priv)
8552{
8553 struct devlink_trap_item *trap_item;
8554 int err;
8555
8556 if (devlink_trap_item_lookup(devlink, trap->name))
8557 return -EEXIST;
8558
8559 trap_item = kzalloc(sizeof(*trap_item), GFP_KERNEL);
8560 if (!trap_item)
8561 return -ENOMEM;
8562
8563 trap_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
8564 if (!trap_item->stats) {
8565 err = -ENOMEM;
8566 goto err_stats_alloc;
8567 }
8568
8569 trap_item->trap = trap;
8570 trap_item->action = trap->init_action;
8571 trap_item->priv = priv;
8572
8573 err = devlink_trap_item_group_link(devlink, trap_item);
8574 if (err)
8575 goto err_group_link;
8576
8577 err = devlink->ops->trap_init(devlink, trap, trap_item);
8578 if (err)
8579 goto err_trap_init;
8580
8581 list_add_tail(&trap_item->list, &devlink->trap_list);
8582 devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_NEW);
8583
8584 return 0;
8585
8586err_trap_init:
0f420b6c
IS		 8587err_group_link:
8588 free_percpu(trap_item->stats);
8589err_stats_alloc:
8590 kfree(trap_item);
8591 return err;
8592}
8593
8594static void devlink_trap_unregister(struct devlink *devlink,
8595 const struct devlink_trap *trap)
8596{
8597 struct devlink_trap_item *trap_item;
8598
8599 trap_item = devlink_trap_item_lookup(devlink, trap->name);
8600 if (WARN_ON_ONCE(!trap_item))
8601 return;
8602
8603 devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_DEL);
8604 list_del(&trap_item->list);
8605 if (devlink->ops->trap_fini)
8606 devlink->ops->trap_fini(devlink, trap, trap_item);
0f420b6c
IS		 8607 free_percpu(trap_item->stats);
8608 kfree(trap_item);
8609}
8610
8611static void devlink_trap_disable(struct devlink *devlink,
8612 const struct devlink_trap *trap)
8613{
8614 struct devlink_trap_item *trap_item;
8615
8616 trap_item = devlink_trap_item_lookup(devlink, trap->name);
8617 if (WARN_ON_ONCE(!trap_item))
8618 return;
8619
8620 devlink->ops->trap_action_set(devlink, trap, DEVLINK_TRAP_ACTION_DROP);
8621 trap_item->action = DEVLINK_TRAP_ACTION_DROP;
8622}
8623
8624/**
8625 * devlink_traps_register - Register packet traps with devlink.
8626 * @devlink: devlink.
8627 * @traps: Packet traps.
8628 * @traps_count: Count of provided packet traps.
8629 * @priv: Driver private information.
8630 *
8631 * Return: Non-zero value on failure.
8632 */
8633int devlink_traps_register(struct devlink *devlink,
8634 const struct devlink_trap *traps,
8635 size_t traps_count, void *priv)
8636{
8637 int i, err;
8638
8639 if (!devlink->ops->trap_init || !devlink->ops->trap_action_set)
8640 return -EINVAL;
8641
8642 mutex_lock(&devlink->lock);
8643 for (i = 0; i < traps_count; i++) {
8644 const struct devlink_trap *trap = &traps[i];
8645
8646 err = devlink_trap_verify(trap);
8647 if (err)
8648 goto err_trap_verify;
8649
8650 err = devlink_trap_register(devlink, trap, priv);
8651 if (err)
8652 goto err_trap_register;
8653 }
8654 mutex_unlock(&devlink->lock);
8655
8656 return 0;
8657
8658err_trap_register:
8659err_trap_verify:
8660 for (i--; i >= 0; i--)
8661 devlink_trap_unregister(devlink, &traps[i]);
8662 mutex_unlock(&devlink->lock);
8663 return err;
8664}
8665EXPORT_SYMBOL_GPL(devlink_traps_register);
8666
8667/**
8668 * devlink_traps_unregister - Unregister packet traps from devlink.
8669 * @devlink: devlink.
8670 * @traps: Packet traps.
8671 * @traps_count: Count of provided packet traps.
8672 */
8673void devlink_traps_unregister(struct devlink *devlink,
8674 const struct devlink_trap *traps,
8675 size_t traps_count)
8676{
8677 int i;
8678
8679 mutex_lock(&devlink->lock);
8680 /* Make sure we do not have any packets in-flight while unregistering
8681 * traps by disabling all of them and waiting for a grace period.
8682 */
8683 for (i = traps_count - 1; i >= 0; i--)
8684 devlink_trap_disable(devlink, &traps[i]);
8685 synchronize_rcu();
8686 for (i = traps_count - 1; i >= 0; i--)
8687 devlink_trap_unregister(devlink, &traps[i]);
8688 mutex_unlock(&devlink->lock);
8689}
8690EXPORT_SYMBOL_GPL(devlink_traps_unregister);
8691
8692static void
8693devlink_trap_stats_update(struct devlink_stats __percpu *trap_stats,
8694 size_t skb_len)
8695{
8696 struct devlink_stats *stats;
8697
8698 stats = this_cpu_ptr(trap_stats);
8699 u64_stats_update_begin(&stats->syncp);
8700 stats->rx_bytes += skb_len;
8701 stats->rx_packets++;
8702 u64_stats_update_end(&stats->syncp);
8703}
8704
8705static void
8706devlink_trap_report_metadata_fill(struct net_dm_hw_metadata *hw_metadata,
8707 const struct devlink_trap_item *trap_item,
5a2e106c
JP		 8708 struct devlink_port *in_devlink_port,
8709 const struct flow_action_cookie *fa_cookie)
0f420b6c
IS		 8710{
8711 struct devlink_trap_group_item *group_item = trap_item->group_item;
8712
8713 hw_metadata->trap_group_name = group_item->group->name;
8714 hw_metadata->trap_name = trap_item->trap->name;
5a2e106c 8715 hw_metadata->fa_cookie = fa_cookie;
0f420b6c
IS		 8716
8717 spin_lock(&in_devlink_port->type_lock);
8718 if (in_devlink_port->type == DEVLINK_PORT_TYPE_ETH)
8719 hw_metadata->input_dev = in_devlink_port->type_dev;
8720 spin_unlock(&in_devlink_port->type_lock);
8721}
8722
8723/**
8724 * devlink_trap_report - Report trapped packet to drop monitor.
8725 * @devlink: devlink.
8726 * @skb: Trapped packet.
8727 * @trap_ctx: Trap context.
8728 * @in_devlink_port: Input devlink port.
5a2e106c 8729 * @fa_cookie: Flow action cookie. Could be NULL.
0f420b6c
IS		 8730 */
8731void devlink_trap_report(struct devlink *devlink, struct sk_buff *skb,
5a2e106c
JP		 8732 void *trap_ctx, struct devlink_port *in_devlink_port,
8733 const struct flow_action_cookie *fa_cookie)
8734
0f420b6c
IS		 8735{
8736 struct devlink_trap_item *trap_item = trap_ctx;
8737 struct net_dm_hw_metadata hw_metadata = {};
8738
8739 devlink_trap_stats_update(trap_item->stats, skb->len);
8740 devlink_trap_stats_update(trap_item->group_item->stats, skb->len);
8741
8742 devlink_trap_report_metadata_fill(&hw_metadata, trap_item,
5a2e106c 8743 in_devlink_port, fa_cookie);
0f420b6c
IS		 8744 net_dm_hw_report(skb, &hw_metadata);
8745}
8746EXPORT_SYMBOL_GPL(devlink_trap_report);
8747
8748/**
8749 * devlink_trap_ctx_priv - Trap context to driver private information.
8750 * @trap_ctx: Trap context.
8751 *
8752 * Return: Driver private information passed during registration.
8753 */
8754void *devlink_trap_ctx_priv(void *trap_ctx)
8755{
8756 struct devlink_trap_item *trap_item = trap_ctx;
8757
8758 return trap_item->priv;
8759}
8760EXPORT_SYMBOL_GPL(devlink_trap_ctx_priv);
8761
95ad9555
IS		 8762static int
8763devlink_trap_group_register(struct devlink *devlink,
8764 const struct devlink_trap_group *group)
8765{
8766 struct devlink_trap_group_item *group_item;
8767 int err;
8768
8769 if (devlink_trap_group_item_lookup(devlink, group->name))
8770 return -EEXIST;
8771
8772 group_item = kzalloc(sizeof(*group_item), GFP_KERNEL);
8773 if (!group_item)
8774 return -ENOMEM;
8775
8776 group_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
8777 if (!group_item->stats) {
8778 err = -ENOMEM;
8779 goto err_stats_alloc;
8780 }
8781
8782 group_item->group = group;
95ad9555
IS		 8783
8784 if (devlink->ops->trap_group_init) {
8785 err = devlink->ops->trap_group_init(devlink, group);
8786 if (err)
8787 goto err_group_init;
8788 }
8789
8790 list_add_tail(&group_item->list, &devlink->trap_group_list);
8791 devlink_trap_group_notify(devlink, group_item,
8792 DEVLINK_CMD_TRAP_GROUP_NEW);
8793
8794 return 0;
8795
8796err_group_init:
8797 free_percpu(group_item->stats);
8798err_stats_alloc:
8799 kfree(group_item);
8800 return err;
8801}
8802
8803static void
8804devlink_trap_group_unregister(struct devlink *devlink,
8805 const struct devlink_trap_group *group)
8806{
8807 struct devlink_trap_group_item *group_item;
8808
8809 group_item = devlink_trap_group_item_lookup(devlink, group->name);
8810 if (WARN_ON_ONCE(!group_item))
8811 return;
8812
8813 devlink_trap_group_notify(devlink, group_item,
8814 DEVLINK_CMD_TRAP_GROUP_DEL);
8815 list_del(&group_item->list);
8816 free_percpu(group_item->stats);
8817 kfree(group_item);
8818}
8819
8820/**
8821 * devlink_trap_groups_register - Register packet trap groups with devlink.
8822 * @devlink: devlink.
8823 * @groups: Packet trap groups.
8824 * @groups_count: Count of provided packet trap groups.
8825 *
8826 * Return: Non-zero value on failure.
8827 */
8828int devlink_trap_groups_register(struct devlink *devlink,
8829 const struct devlink_trap_group *groups,
8830 size_t groups_count)
8831{
8832 int i, err;
8833
8834 mutex_lock(&devlink->lock);
8835 for (i = 0; i < groups_count; i++) {
8836 const struct devlink_trap_group *group = &groups[i];
8837
8838 err = devlink_trap_group_verify(group);
8839 if (err)
8840 goto err_trap_group_verify;
8841
8842 err = devlink_trap_group_register(devlink, group);
8843 if (err)
8844 goto err_trap_group_register;
8845 }
8846 mutex_unlock(&devlink->lock);
8847
8848 return 0;
8849
8850err_trap_group_register:
8851err_trap_group_verify:
8852 for (i--; i >= 0; i--)
8853 devlink_trap_group_unregister(devlink, &groups[i]);
8854 mutex_unlock(&devlink->lock);
8855 return err;
8856}
8857EXPORT_SYMBOL_GPL(devlink_trap_groups_register);
8858
8859/**
8860 * devlink_trap_groups_unregister - Unregister packet trap groups from devlink.
8861 * @devlink: devlink.
8862 * @groups: Packet trap groups.
8863 * @groups_count: Count of provided packet trap groups.
8864 */
8865void devlink_trap_groups_unregister(struct devlink *devlink,
8866 const struct devlink_trap_group *groups,
8867 size_t groups_count)
8868{
8869 int i;
8870
8871 mutex_lock(&devlink->lock);
8872 for (i = groups_count - 1; i >= 0; i--)
8873 devlink_trap_group_unregister(devlink, &groups[i]);
8874 mutex_unlock(&devlink->lock);
8875}
8876EXPORT_SYMBOL_GPL(devlink_trap_groups_unregister);
8877
1e8c6619
IS		 8878static void
8879devlink_trap_policer_notify(struct devlink *devlink,
8880 const struct devlink_trap_policer_item *policer_item,
8881 enum devlink_command cmd)
8882{
8883 struct sk_buff *msg;
8884 int err;
8885
8886 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_POLICER_NEW &&
8887 cmd != DEVLINK_CMD_TRAP_POLICER_DEL);
8888
8889 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8890 if (!msg)
8891 return;
8892
8893 err = devlink_nl_trap_policer_fill(msg, devlink, policer_item, cmd, 0,
8894 0, 0);
8895 if (err) {
8896 nlmsg_free(msg);
8897 return;
8898 }
8899
8900 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
8901 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
8902}
8903
8904static int
8905devlink_trap_policer_register(struct devlink *devlink,
8906 const struct devlink_trap_policer *policer)
8907{
8908 struct devlink_trap_policer_item *policer_item;
8909 int err;
8910
8911 if (devlink_trap_policer_item_lookup(devlink, policer->id))
8912 return -EEXIST;
8913
8914 policer_item = kzalloc(sizeof(*policer_item), GFP_KERNEL);
8915 if (!policer_item)
8916 return -ENOMEM;
8917
8918 policer_item->policer = policer;
8919 policer_item->rate = policer->init_rate;
8920 policer_item->burst = policer->init_burst;
8921
8922 if (devlink->ops->trap_policer_init) {
8923 err = devlink->ops->trap_policer_init(devlink, policer);
8924 if (err)
8925 goto err_policer_init;
8926 }
8927
8928 list_add_tail(&policer_item->list, &devlink->trap_policer_list);
8929 devlink_trap_policer_notify(devlink, policer_item,
8930 DEVLINK_CMD_TRAP_POLICER_NEW);
8931
8932 return 0;
8933
8934err_policer_init:
8935 kfree(policer_item);
8936 return err;
8937}
8938
8939static void
8940devlink_trap_policer_unregister(struct devlink *devlink,
8941 const struct devlink_trap_policer *policer)
8942{
8943 struct devlink_trap_policer_item *policer_item;
8944
8945 policer_item = devlink_trap_policer_item_lookup(devlink, policer->id);
8946 if (WARN_ON_ONCE(!policer_item))
8947 return;
8948
8949 devlink_trap_policer_notify(devlink, policer_item,
8950 DEVLINK_CMD_TRAP_POLICER_DEL);
8951 list_del(&policer_item->list);
8952 if (devlink->ops->trap_policer_fini)
8953 devlink->ops->trap_policer_fini(devlink, policer);
8954 kfree(policer_item);
8955}
8956
8957/**
8958 * devlink_trap_policers_register - Register packet trap policers with devlink.
8959 * @devlink: devlink.
8960 * @policers: Packet trap policers.
8961 * @policers_count: Count of provided packet trap policers.
8962 *
8963 * Return: Non-zero value on failure.
8964 */
8965int
8966devlink_trap_policers_register(struct devlink *devlink,
8967 const struct devlink_trap_policer *policers,
8968 size_t policers_count)
8969{
8970 int i, err;
8971
8972 mutex_lock(&devlink->lock);
8973 for (i = 0; i < policers_count; i++) {
8974 const struct devlink_trap_policer *policer = &policers[i];
8975
8976 if (WARN_ON(policer->id == 0 ||
8977 policer->max_rate < policer->min_rate ||
8978 policer->max_burst < policer->min_burst)) {
8979 err = -EINVAL;
8980 goto err_trap_policer_verify;
8981 }
8982
8983 err = devlink_trap_policer_register(devlink, policer);
8984 if (err)
8985 goto err_trap_policer_register;
8986 }
8987 mutex_unlock(&devlink->lock);
8988
8989 return 0;
8990
8991err_trap_policer_register:
8992err_trap_policer_verify:
8993 for (i--; i >= 0; i--)
8994 devlink_trap_policer_unregister(devlink, &policers[i]);
8995 mutex_unlock(&devlink->lock);
8996 return err;
8997}
8998EXPORT_SYMBOL_GPL(devlink_trap_policers_register);
8999
9000/**
9001 * devlink_trap_policers_unregister - Unregister packet trap policers from devlink.
9002 * @devlink: devlink.
9003 * @policers: Packet trap policers.
9004 * @policers_count: Count of provided packet trap policers.
9005 */
9006void
9007devlink_trap_policers_unregister(struct devlink *devlink,
9008 const struct devlink_trap_policer *policers,
9009 size_t policers_count)
9010{
9011 int i;
9012
9013 mutex_lock(&devlink->lock);
9014 for (i = policers_count - 1; i >= 0; i--)
9015 devlink_trap_policer_unregister(devlink, &policers[i]);
9016 mutex_unlock(&devlink->lock);
9017}
9018EXPORT_SYMBOL_GPL(devlink_trap_policers_unregister);
9019
ddb6e99e
JK		 9020static void __devlink_compat_running_version(struct devlink *devlink,
9021 char *buf, size_t len)
9022{
9023 const struct nlattr *nlattr;
9024 struct devlink_info_req req;
9025 struct sk_buff *msg;
9026 int rem, err;
9027
ddb6e99e
JK		 9028 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9029 if (!msg)
9030 return;
9031
9032 req.msg = msg;
9033 err = devlink->ops->info_get(devlink, &req, NULL);
9034 if (err)
9035 goto free_msg;
9036
9037 nla_for_each_attr(nlattr, (void *)msg->data, msg->len, rem) {
9038 const struct nlattr *kv;
9039 int rem_kv;
9040
9041 if (nla_type(nlattr) != DEVLINK_ATTR_INFO_VERSION_RUNNING)
9042 continue;
9043
9044 nla_for_each_nested(kv, nlattr, rem_kv) {
9045 if (nla_type(kv) != DEVLINK_ATTR_INFO_VERSION_VALUE)
9046 continue;
9047
9048 strlcat(buf, nla_data(kv), len);
9049 strlcat(buf, " ", len);
9050 }
9051 }
9052free_msg:
9053 nlmsg_free(msg);
9054}
9055
9056void devlink_compat_running_version(struct net_device *dev,
9057 char *buf, size_t len)
9058{
ddb6e99e
JK		 9059 struct devlink *devlink;
9060
1b45ff6c
JK		 9061 dev_hold(dev);
9062 rtnl_unlock();
9063
b473b0d2 9064 devlink = netdev_to_devlink(dev);
be6fe1d8 9065 if (!devlink || !devlink->ops->info_get)
e0dcd386 9066 goto out;
b473b0d2
JK		 9067
9068 mutex_lock(&devlink->lock);
9069 __devlink_compat_running_version(devlink, buf, len);
9070 mutex_unlock(&devlink->lock);
1b45ff6c 9071
e0dcd386 9072out:
1b45ff6c
JK		 9073 rtnl_lock();
9074 dev_put(dev);
ddb6e99e
JK		 9075}
9076
4eceba17
JK		 9077int devlink_compat_flash_update(struct net_device *dev, const char *file_name)
9078{
4eceba17 9079 struct devlink *devlink;
e0dcd386 9080 int ret;
4eceba17 9081
1b45ff6c
JK		 9082 dev_hold(dev);
9083 rtnl_unlock();
9084
b473b0d2 9085 devlink = netdev_to_devlink(dev);
e0dcd386
JP		 9086 if (!devlink || !devlink->ops->flash_update) {
9087 ret = -EOPNOTSUPP;
9088 goto out;
9089 }
4eceba17 9090
b473b0d2
JK		 9091 mutex_lock(&devlink->lock);
9092 ret = devlink->ops->flash_update(devlink, file_name, NULL, NULL);
9093 mutex_unlock(&devlink->lock);
1b45ff6c 9094
e0dcd386 9095out:
1b45ff6c
JK		 9096 rtnl_lock();
9097 dev_put(dev);
9098
b473b0d2 9099 return ret;
4eceba17
JK		 9100}
9101
af3836df
JP		 9102int devlink_compat_phys_port_name_get(struct net_device *dev,
9103 char *name, size_t len)
9104{
9105 struct devlink_port *devlink_port;
9106
9107 /* RTNL mutex is held here which ensures that devlink_port
9108 * instance cannot disappear in the middle. No need to take
9109 * any devlink lock as only permanent values are accessed.
9110 */
9111 ASSERT_RTNL();
9112
9113 devlink_port = netdev_to_devlink_port(dev);
9114 if (!devlink_port)
9115 return -EOPNOTSUPP;
9116
9117 return __devlink_port_phys_port_name_get(devlink_port, name, len);
9118}
9119
7e1146e8
JP		 9120int devlink_compat_switch_id_get(struct net_device *dev,
9121 struct netdev_phys_item_id *ppid)
9122{
9123 struct devlink_port *devlink_port;
9124
043b8413
VB		 9125 /* Caller must hold RTNL mutex or reference to dev, which ensures that
9126 * devlink_port instance cannot disappear in the middle. No need to take
7e1146e8
JP		 9127 * any devlink lock as only permanent values are accessed.
9128 */
7e1146e8
JP		 9129 devlink_port = netdev_to_devlink_port(dev);
9130 if (!devlink_port || !devlink_port->attrs.switch_port)
9131 return -EOPNOTSUPP;
9132
9133 memcpy(ppid, &devlink_port->attrs.switch_id, sizeof(*ppid));
9134
9135 return 0;
9136}
9137
070c63f2
JP		 9138static void __net_exit devlink_pernet_pre_exit(struct net *net)
9139{
9140 struct devlink *devlink;
9141 int err;
9142
9143 /* In case network namespace is getting destroyed, reload
9144 * all devlink instances from this namespace into init_net.
9145 */
9146 mutex_lock(&devlink_mutex);
9147 list_for_each_entry(devlink, &devlink_list, list) {
9148 if (net_eq(devlink_net(devlink), net)) {
9149 if (WARN_ON(!devlink_reload_supported(devlink)))
9150 continue;
9151 err = devlink_reload(devlink, &init_net, NULL);
a0c76345 9152 if (err && err != -EOPNOTSUPP)
070c63f2
JP		 9153 pr_warn("Failed to reload devlink instance into init_net\n");
9154 }
9155 }
9156 mutex_unlock(&devlink_mutex);
9157}
9158
9159static struct pernet_operations devlink_pernet_ops __net_initdata = {
9160 .pre_exit = devlink_pernet_pre_exit,
9161};
9162
f4b6bcc7 9163static int __init devlink_init(void)
bfcd3a46 9164{
070c63f2
JP		 9165 int err;
9166
9167 err = genl_register_family(&devlink_nl_family);
9168 if (err)
9169 goto out;
9170 err = register_pernet_subsys(&devlink_pernet_ops);
9171
9172out:
9173 WARN_ON(err);
9174 return err;
bfcd3a46
JP		 9175}
9176
f4b6bcc7 9177subsys_initcall(devlink_init);
Linux 6.x block layer and io_uring tree(s)