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devlink: convert snapshot destructor callback to region op
[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) {
2712 NL_SET_ERR_MSG(info->extack, "multiple netns identifying attributes specified");
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)) {
2730 NL_SET_ERR_MSG(info->extack, "Unknown network namespace");
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
92b49822
JP		 3771static void devlink_region_snapshot_del(struct devlink_region *region,
3772 struct devlink_snapshot *snapshot)
3773{
3774 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_DEL);
3775 region->cur_snapshots--;
3776 list_del(&snapshot->list);
a0a09f6b 3777 region->ops->destructor(snapshot->data);
92b49822
JP		 3778 kfree(snapshot);
3779}
3780
d8db7ea5
AV		 3781static int devlink_nl_cmd_region_get_doit(struct sk_buff *skb,
3782 struct genl_info *info)
3783{
3784 struct devlink *devlink = info->user_ptr[0];
3785 struct devlink_region *region;
3786 const char *region_name;
3787 struct sk_buff *msg;
3788 int err;
3789
3790 if (!info->attrs[DEVLINK_ATTR_REGION_NAME])
3791 return -EINVAL;
3792
3793 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
3794 region = devlink_region_get_by_name(devlink, region_name);
3795 if (!region)
3796 return -EINVAL;
3797
3798 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3799 if (!msg)
3800 return -ENOMEM;
3801
3802 err = devlink_nl_region_fill(msg, devlink, DEVLINK_CMD_REGION_GET,
3803 info->snd_portid, info->snd_seq, 0,
3804 region);
3805 if (err) {
3806 nlmsg_free(msg);
3807 return err;
3808 }
3809
3810 return genlmsg_reply(msg, info);
3811}
3812
3813static int devlink_nl_cmd_region_get_dumpit(struct sk_buff *msg,
3814 struct netlink_callback *cb)
3815{
3816 struct devlink_region *region;
3817 struct devlink *devlink;
3818 int start = cb->args[0];
3819 int idx = 0;
3820 int err;
3821
3822 mutex_lock(&devlink_mutex);
3823 list_for_each_entry(devlink, &devlink_list, list) {
3824 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
3825 continue;
3826
3827 mutex_lock(&devlink->lock);
3828 list_for_each_entry(region, &devlink->region_list, list) {
3829 if (idx < start) {
3830 idx++;
3831 continue;
3832 }
3833 err = devlink_nl_region_fill(msg, devlink,
3834 DEVLINK_CMD_REGION_GET,
3835 NETLINK_CB(cb->skb).portid,
3836 cb->nlh->nlmsg_seq,
3837 NLM_F_MULTI, region);
3838 if (err) {
3839 mutex_unlock(&devlink->lock);
3840 goto out;
3841 }
3842 idx++;
3843 }
3844 mutex_unlock(&devlink->lock);
3845 }
3846out:
3847 mutex_unlock(&devlink_mutex);
3848 cb->args[0] = idx;
3849 return msg->len;
3850}
3851
866319bb
AV		 3852static int devlink_nl_cmd_region_del(struct sk_buff *skb,
3853 struct genl_info *info)
3854{
3855 struct devlink *devlink = info->user_ptr[0];
3856 struct devlink_snapshot *snapshot;
3857 struct devlink_region *region;
3858 const char *region_name;
3859 u32 snapshot_id;
3860
3861 if (!info->attrs[DEVLINK_ATTR_REGION_NAME] ||
3862 !info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID])
3863 return -EINVAL;
3864
3865 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
3866 snapshot_id = nla_get_u32(info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
3867
3868 region = devlink_region_get_by_name(devlink, region_name);
3869 if (!region)
3870 return -EINVAL;
3871
3872 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
3873 if (!snapshot)
3874 return -EINVAL;
3875
92b49822 3876 devlink_region_snapshot_del(region, snapshot);
866319bb
AV		 3877 return 0;
3878}
3879
4e54795a
AV		 3880static int devlink_nl_cmd_region_read_chunk_fill(struct sk_buff *msg,
3881 struct devlink *devlink,
3882 u8 *chunk, u32 chunk_size,
3883 u64 addr)
3884{
3885 struct nlattr *chunk_attr;
3886 int err;
3887
ae0be8de 3888 chunk_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_CHUNK);
4e54795a
AV		 3889 if (!chunk_attr)
3890 return -EINVAL;
3891
3892 err = nla_put(msg, DEVLINK_ATTR_REGION_CHUNK_DATA, chunk_size, chunk);
3893 if (err)
3894 goto nla_put_failure;
3895
3896 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_CHUNK_ADDR, addr,
3897 DEVLINK_ATTR_PAD);
3898 if (err)
3899 goto nla_put_failure;
3900
3901 nla_nest_end(msg, chunk_attr);
3902 return 0;
3903
3904nla_put_failure:
3905 nla_nest_cancel(msg, chunk_attr);
3906 return err;
3907}
3908
3909#define DEVLINK_REGION_READ_CHUNK_SIZE 256
3910
3911static int devlink_nl_region_read_snapshot_fill(struct sk_buff *skb,
3912 struct devlink *devlink,
3913 struct devlink_region *region,
3914 struct nlattr **attrs,
3915 u64 start_offset,
3916 u64 end_offset,
3917 bool dump,
3918 u64 *new_offset)
3919{
3920 struct devlink_snapshot *snapshot;
3921 u64 curr_offset = start_offset;
3922 u32 snapshot_id;
3923 int err = 0;
3924
3925 *new_offset = start_offset;
3926
3927 snapshot_id = nla_get_u32(attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
3928 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
3929 if (!snapshot)
3930 return -EINVAL;
3931
3a5e5234
JP		 3932 if (end_offset > region->size || dump)
3933 end_offset = region->size;
4e54795a
AV		 3934
3935 while (curr_offset < end_offset) {
3936 u32 data_size;
3937 u8 *data;
3938
3939 if (end_offset - curr_offset < DEVLINK_REGION_READ_CHUNK_SIZE)
3940 data_size = end_offset - curr_offset;
3941 else
3942 data_size = DEVLINK_REGION_READ_CHUNK_SIZE;
3943
3944 data = &snapshot->data[curr_offset];
3945 err = devlink_nl_cmd_region_read_chunk_fill(skb, devlink,
3946 data, data_size,
3947 curr_offset);
3948 if (err)
3949 break;
3950
3951 curr_offset += data_size;
3952 }
3953 *new_offset = curr_offset;
3954
3955 return err;
3956}
3957
3958static int devlink_nl_cmd_region_read_dumpit(struct sk_buff *skb,
3959 struct netlink_callback *cb)
3960{
ee85da53 3961 const struct genl_dumpit_info *info = genl_dumpit_info(cb);
4e54795a 3962 u64 ret_offset, start_offset, end_offset = 0;
ee85da53 3963 struct nlattr **attrs = info->attrs;
4e54795a
AV		 3964 struct devlink_region *region;
3965 struct nlattr *chunks_attr;
3966 const char *region_name;
3967 struct devlink *devlink;
3968 bool dump = true;
3969 void *hdr;
3970 int err;
3971
3972 start_offset = *((u64 *)&cb->args[0]);
3973
dac7c08f 3974 mutex_lock(&devlink_mutex);
4e54795a 3975 devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
fdd41ec2
PP		 3976 if (IS_ERR(devlink)) {
3977 err = PTR_ERR(devlink);
dac7c08f 3978 goto out_dev;
fdd41ec2 3979 }
4e54795a 3980
4e54795a
AV		 3981 mutex_lock(&devlink->lock);
3982
3983 if (!attrs[DEVLINK_ATTR_REGION_NAME] ||
fdd41ec2
PP		 3984 !attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]) {
3985 err = -EINVAL;
4e54795a 3986 goto out_unlock;
fdd41ec2 3987 }
4e54795a
AV		 3988
3989 region_name = nla_data(attrs[DEVLINK_ATTR_REGION_NAME]);
3990 region = devlink_region_get_by_name(devlink, region_name);
fdd41ec2
PP		 3991 if (!region) {
3992 err = -EINVAL;
4e54795a 3993 goto out_unlock;
fdd41ec2 3994 }
4e54795a 3995
d5b90e99
JK		 3996 /* return 0 if there is no further data to read */
3997 if (start_offset >= region->size) {
3998 err = 0;
3999 goto out_unlock;
4000 }
4001
4e54795a
AV		 4002 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
4003 &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI,
4004 DEVLINK_CMD_REGION_READ);
fdd41ec2
PP		 4005 if (!hdr) {
4006 err = -EMSGSIZE;
4e54795a 4007 goto out_unlock;
fdd41ec2 4008 }
4e54795a
AV		 4009
4010 err = devlink_nl_put_handle(skb, devlink);
4011 if (err)
4012 goto nla_put_failure;
4013
4014 err = nla_put_string(skb, DEVLINK_ATTR_REGION_NAME, region_name);
4015 if (err)
4016 goto nla_put_failure;
4017
ae0be8de 4018 chunks_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_REGION_CHUNKS);
fdd41ec2
PP		 4019 if (!chunks_attr) {
4020 err = -EMSGSIZE;
4e54795a 4021 goto nla_put_failure;
fdd41ec2 4022 }
4e54795a
AV		 4023
4024 if (attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR] &&
4025 attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]) {
4026 if (!start_offset)
4027 start_offset =
4028 nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
4029
4030 end_offset = nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
4031 end_offset += nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]);
4032 dump = false;
4033 }
4034
4035 err = devlink_nl_region_read_snapshot_fill(skb, devlink,
4036 region, attrs,
4037 start_offset,
4038 end_offset, dump,
4039 &ret_offset);
4040
4041 if (err && err != -EMSGSIZE)
4042 goto nla_put_failure;
4043
4044 /* Check if there was any progress done to prevent infinite loop */
fdd41ec2
PP		 4045 if (ret_offset == start_offset) {
4046 err = -EINVAL;
4e54795a 4047 goto nla_put_failure;
fdd41ec2 4048 }
4e54795a
AV		 4049
4050 *((u64 *)&cb->args[0]) = ret_offset;
4051
4052 nla_nest_end(skb, chunks_attr);
4053 genlmsg_end(skb, hdr);
4054 mutex_unlock(&devlink->lock);
4055 mutex_unlock(&devlink_mutex);
4056
4057 return skb->len;
4058
4059nla_put_failure:
4060 genlmsg_cancel(skb, hdr);
4061out_unlock:
4062 mutex_unlock(&devlink->lock);
dac7c08f 4063out_dev:
4e54795a 4064 mutex_unlock(&devlink_mutex);
fdd41ec2 4065 return err;
4e54795a
AV		 4066}
4067
f9cf2288
JK		 4068struct devlink_info_req {
4069 struct sk_buff *msg;
4070};
4071
4072int devlink_info_driver_name_put(struct devlink_info_req *req, const char *name)
4073{
4074 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_DRIVER_NAME, name);
4075}
4076EXPORT_SYMBOL_GPL(devlink_info_driver_name_put);
4077
4078int devlink_info_serial_number_put(struct devlink_info_req *req, const char *sn)
4079{
4080 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_SERIAL_NUMBER, sn);
4081}
4082EXPORT_SYMBOL_GPL(devlink_info_serial_number_put);
4083
fc6fae7d
JK		 4084static int devlink_info_version_put(struct devlink_info_req *req, int attr,
4085 const char *version_name,
4086 const char *version_value)
4087{
4088 struct nlattr *nest;
4089 int err;
4090
ae0be8de 4091 nest = nla_nest_start_noflag(req->msg, attr);
fc6fae7d
JK		 4092 if (!nest)
4093 return -EMSGSIZE;
4094
4095 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_NAME,
4096 version_name);
4097 if (err)
4098 goto nla_put_failure;
4099
4100 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_VALUE,
4101 version_value);
4102 if (err)
4103 goto nla_put_failure;
4104
4105 nla_nest_end(req->msg, nest);
4106
4107 return 0;
4108
4109nla_put_failure:
4110 nla_nest_cancel(req->msg, nest);
4111 return err;
4112}
4113
4114int devlink_info_version_fixed_put(struct devlink_info_req *req,
4115 const char *version_name,
4116 const char *version_value)
4117{
4118 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_FIXED,
4119 version_name, version_value);
4120}
4121EXPORT_SYMBOL_GPL(devlink_info_version_fixed_put);
4122
4123int devlink_info_version_stored_put(struct devlink_info_req *req,
4124 const char *version_name,
4125 const char *version_value)
4126{
4127 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_STORED,
4128 version_name, version_value);
4129}
4130EXPORT_SYMBOL_GPL(devlink_info_version_stored_put);
4131
4132int devlink_info_version_running_put(struct devlink_info_req *req,
4133 const char *version_name,
4134 const char *version_value)
4135{
4136 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_RUNNING,
4137 version_name, version_value);
4138}
4139EXPORT_SYMBOL_GPL(devlink_info_version_running_put);
4140
f9cf2288
JK		 4141static int
4142devlink_nl_info_fill(struct sk_buff *msg, struct devlink *devlink,
4143 enum devlink_command cmd, u32 portid,
4144 u32 seq, int flags, struct netlink_ext_ack *extack)
4145{
4146 struct devlink_info_req req;
4147 void *hdr;
4148 int err;
4149
4150 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
4151 if (!hdr)
4152 return -EMSGSIZE;
4153
4154 err = -EMSGSIZE;
4155 if (devlink_nl_put_handle(msg, devlink))
4156 goto err_cancel_msg;
4157
4158 req.msg = msg;
4159 err = devlink->ops->info_get(devlink, &req, extack);
4160 if (err)
4161 goto err_cancel_msg;
4162
4163 genlmsg_end(msg, hdr);
4164 return 0;
4165
4166err_cancel_msg:
4167 genlmsg_cancel(msg, hdr);
4168 return err;
4169}
4170
4171static int devlink_nl_cmd_info_get_doit(struct sk_buff *skb,
4172 struct genl_info *info)
4173{
4174 struct devlink *devlink = info->user_ptr[0];
4175 struct sk_buff *msg;
4176 int err;
4177
be6fe1d8 4178 if (!devlink->ops->info_get)
f9cf2288
JK		 4179 return -EOPNOTSUPP;
4180
4181 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4182 if (!msg)
4183 return -ENOMEM;
4184
4185 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
4186 info->snd_portid, info->snd_seq, 0,
4187 info->extack);
4188 if (err) {
4189 nlmsg_free(msg);
4190 return err;
4191 }
4192
4193 return genlmsg_reply(msg, info);
4194}
4195
4196static int devlink_nl_cmd_info_get_dumpit(struct sk_buff *msg,
4197 struct netlink_callback *cb)
4198{
4199 struct devlink *devlink;
4200 int start = cb->args[0];
4201 int idx = 0;
c62c2cfb 4202 int err = 0;
f9cf2288
JK		 4203
4204 mutex_lock(&devlink_mutex);
4205 list_for_each_entry(devlink, &devlink_list, list) {
4206 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
4207 continue;
4208 if (idx < start) {
4209 idx++;
4210 continue;
4211 }
4212
c493b09b
JP		 4213 if (!devlink->ops->info_get) {
4214 idx++;
4215 continue;
4216 }
4217
f9cf2288
JK		 4218 mutex_lock(&devlink->lock);
4219 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
4220 NETLINK_CB(cb->skb).portid,
4221 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4222 cb->extack);
4223 mutex_unlock(&devlink->lock);
93c2fcb0 4224 if (err && err != -EOPNOTSUPP)
f9cf2288
JK		 4225 break;
4226 idx++;
4227 }
4228 mutex_unlock(&devlink_mutex);
4229
c62c2cfb
JP		 4230 if (err != -EMSGSIZE)
4231 return err;
4232
f9cf2288
JK		 4233 cb->args[0] = idx;
4234 return msg->len;
4235}
4236
1db64e87
EBE		 4237struct devlink_fmsg_item {
4238 struct list_head list;
4239 int attrtype;
4240 u8 nla_type;
4241 u16 len;
d2afb41a 4242 int value[];
1db64e87
EBE		 4243};
4244
4245struct devlink_fmsg {
4246 struct list_head item_list;
573ed90a
AL		 4247 bool putting_binary; /* This flag forces enclosing of binary data
4248 * in an array brackets. It forces using
4249 * of designated API:
4250 * devlink_fmsg_binary_pair_nest_start()
4251 * devlink_fmsg_binary_pair_nest_end()
4252 */
1db64e87
EBE		 4253};
4254
4255static struct devlink_fmsg *devlink_fmsg_alloc(void)
4256{
4257 struct devlink_fmsg *fmsg;
4258
4259 fmsg = kzalloc(sizeof(*fmsg), GFP_KERNEL);
4260 if (!fmsg)
4261 return NULL;
4262
4263 INIT_LIST_HEAD(&fmsg->item_list);
4264
4265 return fmsg;
4266}
4267
4268static void devlink_fmsg_free(struct devlink_fmsg *fmsg)
4269{
4270 struct devlink_fmsg_item *item, *tmp;
4271
4272 list_for_each_entry_safe(item, tmp, &fmsg->item_list, list) {
4273 list_del(&item->list);
4274 kfree(item);
4275 }
4276 kfree(fmsg);
4277}
4278
4279static int devlink_fmsg_nest_common(struct devlink_fmsg *fmsg,
4280 int attrtype)
4281{
4282 struct devlink_fmsg_item *item;
4283
4284 item = kzalloc(sizeof(*item), GFP_KERNEL);
4285 if (!item)
4286 return -ENOMEM;
4287
4288 item->attrtype = attrtype;
4289 list_add_tail(&item->list, &fmsg->item_list);
4290
4291 return 0;
4292}
4293
4294int devlink_fmsg_obj_nest_start(struct devlink_fmsg *fmsg)
4295{
573ed90a
AL		 4296 if (fmsg->putting_binary)
4297 return -EINVAL;
4298
1db64e87
EBE		 4299 return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_OBJ_NEST_START);
4300}
4301EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_start);
4302
4303static int devlink_fmsg_nest_end(struct devlink_fmsg *fmsg)
4304{
573ed90a
AL		 4305 if (fmsg->putting_binary)
4306 return -EINVAL;
4307
1db64e87
EBE		 4308 return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_NEST_END);
4309}
4310
4311int devlink_fmsg_obj_nest_end(struct devlink_fmsg *fmsg)
4312{
573ed90a
AL		 4313 if (fmsg->putting_binary)
4314 return -EINVAL;
4315
1db64e87
EBE		 4316 return devlink_fmsg_nest_end(fmsg);
4317}
4318EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_end);
4319
4320#define DEVLINK_FMSG_MAX_SIZE (GENLMSG_DEFAULT_SIZE - GENL_HDRLEN - NLA_HDRLEN)
4321
4322static int devlink_fmsg_put_name(struct devlink_fmsg *fmsg, const char *name)
4323{
4324 struct devlink_fmsg_item *item;
4325
573ed90a
AL		 4326 if (fmsg->putting_binary)
4327 return -EINVAL;
4328
1db64e87
EBE		 4329 if (strlen(name) + 1 > DEVLINK_FMSG_MAX_SIZE)
4330 return -EMSGSIZE;
4331
4332 item = kzalloc(sizeof(*item) + strlen(name) + 1, GFP_KERNEL);
4333 if (!item)
4334 return -ENOMEM;
4335
4336 item->nla_type = NLA_NUL_STRING;
4337 item->len = strlen(name) + 1;
4338 item->attrtype = DEVLINK_ATTR_FMSG_OBJ_NAME;
4339 memcpy(&item->value, name, item->len);
4340 list_add_tail(&item->list, &fmsg->item_list);
4341
4342 return 0;
4343}
4344
4345int devlink_fmsg_pair_nest_start(struct devlink_fmsg *fmsg, const char *name)
4346{
4347 int err;
4348
573ed90a
AL		 4349 if (fmsg->putting_binary)
4350 return -EINVAL;
4351
1db64e87
EBE		 4352 err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_PAIR_NEST_START);
4353 if (err)
4354 return err;
4355
4356 err = devlink_fmsg_put_name(fmsg, name);
4357 if (err)
4358 return err;
4359
4360 return 0;
4361}
4362EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_start);
4363
4364int devlink_fmsg_pair_nest_end(struct devlink_fmsg *fmsg)
4365{
573ed90a
AL		 4366 if (fmsg->putting_binary)
4367 return -EINVAL;
4368
1db64e87
EBE		 4369 return devlink_fmsg_nest_end(fmsg);
4370}
4371EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_end);
4372
4373int devlink_fmsg_arr_pair_nest_start(struct devlink_fmsg *fmsg,
4374 const char *name)
4375{
4376 int err;
4377
573ed90a
AL		 4378 if (fmsg->putting_binary)
4379 return -EINVAL;
4380
1db64e87
EBE		 4381 err = devlink_fmsg_pair_nest_start(fmsg, name);
4382 if (err)
4383 return err;
4384
4385 err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_ARR_NEST_START);
4386 if (err)
4387 return err;
4388
4389 return 0;
4390}
4391EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_start);
4392
4393int devlink_fmsg_arr_pair_nest_end(struct devlink_fmsg *fmsg)
4394{
4395 int err;
4396
573ed90a
AL		 4397 if (fmsg->putting_binary)
4398 return -EINVAL;
4399
1db64e87
EBE		 4400 err = devlink_fmsg_nest_end(fmsg);
4401 if (err)
4402 return err;
4403
4404 err = devlink_fmsg_nest_end(fmsg);
4405 if (err)
4406 return err;
4407
4408 return 0;
4409}
4410EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_end);
4411
573ed90a
AL		 4412int devlink_fmsg_binary_pair_nest_start(struct devlink_fmsg *fmsg,
4413 const char *name)
4414{
4415 int err;
4416
4417 err = devlink_fmsg_arr_pair_nest_start(fmsg, name);
4418 if (err)
4419 return err;
4420
4421 fmsg->putting_binary = true;
4422 return err;
4423}
4424EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_start);
4425
4426int devlink_fmsg_binary_pair_nest_end(struct devlink_fmsg *fmsg)
4427{
4428 if (!fmsg->putting_binary)
4429 return -EINVAL;
4430
4431 fmsg->putting_binary = false;
4432 return devlink_fmsg_arr_pair_nest_end(fmsg);
4433}
4434EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_end);
4435
1db64e87
EBE		 4436static int devlink_fmsg_put_value(struct devlink_fmsg *fmsg,
4437 const void *value, u16 value_len,
4438 u8 value_nla_type)
4439{
4440 struct devlink_fmsg_item *item;
4441
4442 if (value_len > DEVLINK_FMSG_MAX_SIZE)
4443 return -EMSGSIZE;
4444
4445 item = kzalloc(sizeof(*item) + value_len, GFP_KERNEL);
4446 if (!item)
4447 return -ENOMEM;
4448
4449 item->nla_type = value_nla_type;
4450 item->len = value_len;
4451 item->attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
4452 memcpy(&item->value, value, item->len);
4453 list_add_tail(&item->list, &fmsg->item_list);
4454
4455 return 0;
4456}
4457
4458int devlink_fmsg_bool_put(struct devlink_fmsg *fmsg, bool value)
4459{
573ed90a
AL		 4460 if (fmsg->putting_binary)
4461 return -EINVAL;
4462
1db64e87
EBE		 4463 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_FLAG);
4464}
4465EXPORT_SYMBOL_GPL(devlink_fmsg_bool_put);
4466
4467int devlink_fmsg_u8_put(struct devlink_fmsg *fmsg, u8 value)
4468{
573ed90a
AL		 4469 if (fmsg->putting_binary)
4470 return -EINVAL;
4471
1db64e87
EBE		 4472 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U8);
4473}
4474EXPORT_SYMBOL_GPL(devlink_fmsg_u8_put);
4475
4476int devlink_fmsg_u32_put(struct devlink_fmsg *fmsg, u32 value)
4477{
573ed90a
AL		 4478 if (fmsg->putting_binary)
4479 return -EINVAL;
4480
1db64e87
EBE		 4481 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U32);
4482}
4483EXPORT_SYMBOL_GPL(devlink_fmsg_u32_put);
4484
4485int devlink_fmsg_u64_put(struct devlink_fmsg *fmsg, u64 value)
4486{
573ed90a
AL		 4487 if (fmsg->putting_binary)
4488 return -EINVAL;
4489
1db64e87
EBE		 4490 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U64);
4491}
4492EXPORT_SYMBOL_GPL(devlink_fmsg_u64_put);
4493
4494int devlink_fmsg_string_put(struct devlink_fmsg *fmsg, const char *value)
4495{
573ed90a
AL		 4496 if (fmsg->putting_binary)
4497 return -EINVAL;
4498
1db64e87
EBE		 4499 return devlink_fmsg_put_value(fmsg, value, strlen(value) + 1,
4500 NLA_NUL_STRING);
4501}
4502EXPORT_SYMBOL_GPL(devlink_fmsg_string_put);
4503
573ed90a
AL		 4504int devlink_fmsg_binary_put(struct devlink_fmsg *fmsg, const void *value,
4505 u16 value_len)
1db64e87 4506{
573ed90a
AL		 4507 if (!fmsg->putting_binary)
4508 return -EINVAL;
4509
1db64e87
EBE		 4510 return devlink_fmsg_put_value(fmsg, value, value_len, NLA_BINARY);
4511}
573ed90a 4512EXPORT_SYMBOL_GPL(devlink_fmsg_binary_put);
1db64e87
EBE		 4513
4514int devlink_fmsg_bool_pair_put(struct devlink_fmsg *fmsg, const char *name,
4515 bool value)
4516{
4517 int err;
4518
4519 err = devlink_fmsg_pair_nest_start(fmsg, name);
4520 if (err)
4521 return err;
4522
4523 err = devlink_fmsg_bool_put(fmsg, value);
4524 if (err)
4525 return err;
4526
4527 err = devlink_fmsg_pair_nest_end(fmsg);
4528 if (err)
4529 return err;
4530
4531 return 0;
4532}
4533EXPORT_SYMBOL_GPL(devlink_fmsg_bool_pair_put);
4534
4535int devlink_fmsg_u8_pair_put(struct devlink_fmsg *fmsg, const char *name,
4536 u8 value)
4537{
4538 int err;
4539
4540 err = devlink_fmsg_pair_nest_start(fmsg, name);
4541 if (err)
4542 return err;
4543
4544 err = devlink_fmsg_u8_put(fmsg, value);
4545 if (err)
4546 return err;
4547
4548 err = devlink_fmsg_pair_nest_end(fmsg);
4549 if (err)
4550 return err;
4551
4552 return 0;
4553}
4554EXPORT_SYMBOL_GPL(devlink_fmsg_u8_pair_put);
4555
4556int devlink_fmsg_u32_pair_put(struct devlink_fmsg *fmsg, const char *name,
4557 u32 value)
4558{
4559 int err;
4560
4561 err = devlink_fmsg_pair_nest_start(fmsg, name);
4562 if (err)
4563 return err;
4564
4565 err = devlink_fmsg_u32_put(fmsg, value);
4566 if (err)
4567 return err;
4568
4569 err = devlink_fmsg_pair_nest_end(fmsg);
4570 if (err)
4571 return err;
4572
4573 return 0;
4574}
4575EXPORT_SYMBOL_GPL(devlink_fmsg_u32_pair_put);
4576
4577int devlink_fmsg_u64_pair_put(struct devlink_fmsg *fmsg, const char *name,
4578 u64 value)
4579{
4580 int err;
4581
4582 err = devlink_fmsg_pair_nest_start(fmsg, name);
4583 if (err)
4584 return err;
4585
4586 err = devlink_fmsg_u64_put(fmsg, value);
4587 if (err)
4588 return err;
4589
4590 err = devlink_fmsg_pair_nest_end(fmsg);
4591 if (err)
4592 return err;
4593
4594 return 0;
4595}
4596EXPORT_SYMBOL_GPL(devlink_fmsg_u64_pair_put);
4597
4598int devlink_fmsg_string_pair_put(struct devlink_fmsg *fmsg, const char *name,
4599 const char *value)
4600{
4601 int err;
4602
4603 err = devlink_fmsg_pair_nest_start(fmsg, name);
4604 if (err)
4605 return err;
4606
4607 err = devlink_fmsg_string_put(fmsg, value);
4608 if (err)
4609 return err;
4610
4611 err = devlink_fmsg_pair_nest_end(fmsg);
4612 if (err)
4613 return err;
4614
4615 return 0;
4616}
4617EXPORT_SYMBOL_GPL(devlink_fmsg_string_pair_put);
4618
4619int devlink_fmsg_binary_pair_put(struct devlink_fmsg *fmsg, const char *name,
e2cde864 4620 const void *value, u32 value_len)
1db64e87 4621{
e2cde864 4622 u32 data_size;
573ed90a 4623 int end_err;
e2cde864 4624 u32 offset;
1db64e87
EBE		 4625 int err;
4626
573ed90a 4627 err = devlink_fmsg_binary_pair_nest_start(fmsg, name);
1db64e87
EBE		 4628 if (err)
4629 return err;
4630
e2cde864
AL		 4631 for (offset = 0; offset < value_len; offset += data_size) {
4632 data_size = value_len - offset;
4633 if (data_size > DEVLINK_FMSG_MAX_SIZE)
4634 data_size = DEVLINK_FMSG_MAX_SIZE;
4635 err = devlink_fmsg_binary_put(fmsg, value + offset, data_size);
4636 if (err)
573ed90a
AL		 4637 break;
4638 /* Exit from loop with a break (instead of
4639 * return) to make sure putting_binary is turned off in
4640 * devlink_fmsg_binary_pair_nest_end
4641 */
e2cde864 4642 }
1db64e87 4643
573ed90a
AL		 4644 end_err = devlink_fmsg_binary_pair_nest_end(fmsg);
4645 if (end_err)
4646 err = end_err;
1db64e87 4647
573ed90a 4648 return err;
1db64e87
EBE		 4649}
4650EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_put);
4651
4652static int
4653devlink_fmsg_item_fill_type(struct devlink_fmsg_item *msg, struct sk_buff *skb)
4654{
4655 switch (msg->nla_type) {
4656 case NLA_FLAG:
4657 case NLA_U8:
4658 case NLA_U32:
4659 case NLA_U64:
4660 case NLA_NUL_STRING:
4661 case NLA_BINARY:
4662 return nla_put_u8(skb, DEVLINK_ATTR_FMSG_OBJ_VALUE_TYPE,
4663 msg->nla_type);
4664 default:
4665 return -EINVAL;
4666 }
4667}
4668
4669static int
4670devlink_fmsg_item_fill_data(struct devlink_fmsg_item *msg, struct sk_buff *skb)
4671{
4672 int attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
4673 u8 tmp;
4674
4675 switch (msg->nla_type) {
4676 case NLA_FLAG:
4677 /* Always provide flag data, regardless of its value */
4678 tmp = *(bool *) msg->value;
4679
4680 return nla_put_u8(skb, attrtype, tmp);
4681 case NLA_U8:
4682 return nla_put_u8(skb, attrtype, *(u8 *) msg->value);
4683 case NLA_U32:
4684 return nla_put_u32(skb, attrtype, *(u32 *) msg->value);
4685 case NLA_U64:
4686 return nla_put_u64_64bit(skb, attrtype, *(u64 *) msg->value,
4687 DEVLINK_ATTR_PAD);
4688 case NLA_NUL_STRING:
4689 return nla_put_string(skb, attrtype, (char *) &msg->value);
4690 case NLA_BINARY:
4691 return nla_put(skb, attrtype, msg->len, (void *) &msg->value);
4692 default:
4693 return -EINVAL;
4694 }
4695}
4696
4697static int
4698devlink_fmsg_prepare_skb(struct devlink_fmsg *fmsg, struct sk_buff *skb,
4699 int *start)
4700{
4701 struct devlink_fmsg_item *item;
4702 struct nlattr *fmsg_nlattr;
4703 int i = 0;
4704 int err;
4705
ae0be8de 4706 fmsg_nlattr = nla_nest_start_noflag(skb, DEVLINK_ATTR_FMSG);
1db64e87
EBE		 4707 if (!fmsg_nlattr)
4708 return -EMSGSIZE;
4709
4710 list_for_each_entry(item, &fmsg->item_list, list) {
4711 if (i < *start) {
4712 i++;
4713 continue;
4714 }
4715
4716 switch (item->attrtype) {
4717 case DEVLINK_ATTR_FMSG_OBJ_NEST_START:
4718 case DEVLINK_ATTR_FMSG_PAIR_NEST_START:
4719 case DEVLINK_ATTR_FMSG_ARR_NEST_START:
4720 case DEVLINK_ATTR_FMSG_NEST_END:
4721 err = nla_put_flag(skb, item->attrtype);
4722 break;
4723 case DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA:
4724 err = devlink_fmsg_item_fill_type(item, skb);
4725 if (err)
4726 break;
4727 err = devlink_fmsg_item_fill_data(item, skb);
4728 break;
4729 case DEVLINK_ATTR_FMSG_OBJ_NAME:
4730 err = nla_put_string(skb, item->attrtype,
4731 (char *) &item->value);
4732 break;
4733 default:
4734 err = -EINVAL;
4735 break;
4736 }
4737 if (!err)
4738 *start = ++i;
4739 else
4740 break;
4741 }
4742
4743 nla_nest_end(skb, fmsg_nlattr);
4744 return err;
4745}
4746
4747static int devlink_fmsg_snd(struct devlink_fmsg *fmsg,
4748 struct genl_info *info,
4749 enum devlink_command cmd, int flags)
4750{
4751 struct nlmsghdr *nlh;
4752 struct sk_buff *skb;
4753 bool last = false;
4754 int index = 0;
4755 void *hdr;
4756 int err;
4757
4758 while (!last) {
4759 int tmp_index = index;
4760
4761 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
4762 if (!skb)
4763 return -ENOMEM;
4764
4765 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
4766 &devlink_nl_family, flags | NLM_F_MULTI, cmd);
4767 if (!hdr) {
4768 err = -EMSGSIZE;
4769 goto nla_put_failure;
4770 }
4771
4772 err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
4773 if (!err)
4774 last = true;
4775 else if (err != -EMSGSIZE || tmp_index == index)
4776 goto nla_put_failure;
4777
4778 genlmsg_end(skb, hdr);
4779 err = genlmsg_reply(skb, info);
4780 if (err)
4781 return err;
4782 }
4783
4784 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
4785 if (!skb)
4786 return -ENOMEM;
4787 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
4788 NLMSG_DONE, 0, flags | NLM_F_MULTI);
4789 if (!nlh) {
4790 err = -EMSGSIZE;
4791 goto nla_put_failure;
4792 }
1db64e87 4793
fde55ea7 4794 return genlmsg_reply(skb, info);
1db64e87
EBE		 4795
4796nla_put_failure:
4797 nlmsg_free(skb);
4798 return err;
4799}
4800
e44ef4e4
AL		 4801static int devlink_fmsg_dumpit(struct devlink_fmsg *fmsg, struct sk_buff *skb,
4802 struct netlink_callback *cb,
4803 enum devlink_command cmd)
4804{
4805 int index = cb->args[0];
4806 int tmp_index = index;
4807 void *hdr;
4808 int err;
4809
4810 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
4811 &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI, cmd);
4812 if (!hdr) {
4813 err = -EMSGSIZE;
4814 goto nla_put_failure;
4815 }
4816
4817 err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
4818 if ((err && err != -EMSGSIZE) || tmp_index == index)
4819 goto nla_put_failure;
4820
4821 cb->args[0] = index;
4822 genlmsg_end(skb, hdr);
4823 return skb->len;
4824
4825nla_put_failure:
4826 genlmsg_cancel(skb, hdr);
4827 return err;
4828}
4829
a0bdcc59
EBE		 4830struct devlink_health_reporter {
4831 struct list_head list;
4832 void *priv;
4833 const struct devlink_health_reporter_ops *ops;
4834 struct devlink *devlink;
c8e1da0b
EBE		 4835 struct devlink_fmsg *dump_fmsg;
4836 struct mutex dump_lock; /* lock parallel read/write from dump buffers */
a0bdcc59
EBE		 4837 u64 graceful_period;
4838 bool auto_recover;
4839 u8 health_state;
c8e1da0b 4840 u64 dump_ts;
d279505b 4841 u64 dump_real_ts;
c8e1da0b
EBE		 4842 u64 error_count;
4843 u64 recovery_count;
4844 u64 last_recovery_ts;
b587bdaf 4845 refcount_t refcount;
c8e1da0b
EBE		 4846};
4847
a0bdcc59
EBE		 4848void *
4849devlink_health_reporter_priv(struct devlink_health_reporter *reporter)
4850{
4851 return reporter->priv;
4852}
4853EXPORT_SYMBOL_GPL(devlink_health_reporter_priv);
4854
4855static struct devlink_health_reporter *
4856devlink_health_reporter_find_by_name(struct devlink *devlink,
4857 const char *reporter_name)
4858{
4859 struct devlink_health_reporter *reporter;
4860
b587bdaf 4861 lockdep_assert_held(&devlink->reporters_lock);
a0bdcc59
EBE		 4862 list_for_each_entry(reporter, &devlink->reporter_list, list)
4863 if (!strcmp(reporter->ops->name, reporter_name))
4864 return reporter;
4865 return NULL;
4866}
4867
4868/**
4869 * devlink_health_reporter_create - create devlink health reporter
4870 *
4871 * @devlink: devlink
4872 * @ops: ops
4873 * @graceful_period: to avoid recovery loops, in msecs
4874 * @auto_recover: auto recover when error occurs
4875 * @priv: priv
4876 */
4877struct devlink_health_reporter *
4878devlink_health_reporter_create(struct devlink *devlink,
4879 const struct devlink_health_reporter_ops *ops,
4880 u64 graceful_period, bool auto_recover,
4881 void *priv)
4882{
4883 struct devlink_health_reporter *reporter;
4884
b587bdaf 4885 mutex_lock(&devlink->reporters_lock);
a0bdcc59
EBE		 4886 if (devlink_health_reporter_find_by_name(devlink, ops->name)) {
4887 reporter = ERR_PTR(-EEXIST);
4888 goto unlock;
4889 }
4890
4891 if (WARN_ON(auto_recover && !ops->recover) ||
4892 WARN_ON(graceful_period && !ops->recover)) {
4893 reporter = ERR_PTR(-EINVAL);
4894 goto unlock;
4895 }
4896
4897 reporter = kzalloc(sizeof(*reporter), GFP_KERNEL);
4898 if (!reporter) {
4899 reporter = ERR_PTR(-ENOMEM);
4900 goto unlock;
4901 }
4902
4903 reporter->priv = priv;
4904 reporter->ops = ops;
4905 reporter->devlink = devlink;
4906 reporter->graceful_period = graceful_period;
4907 reporter->auto_recover = auto_recover;
c8e1da0b 4908 mutex_init(&reporter->dump_lock);
b587bdaf 4909 refcount_set(&reporter->refcount, 1);
a0bdcc59
EBE		 4910 list_add_tail(&reporter->list, &devlink->reporter_list);
4911unlock:
b587bdaf 4912 mutex_unlock(&devlink->reporters_lock);
a0bdcc59
EBE		 4913 return reporter;
4914}
4915EXPORT_SYMBOL_GPL(devlink_health_reporter_create);
4916
4917/**
4918 * devlink_health_reporter_destroy - destroy devlink health reporter
4919 *
4920 * @reporter: devlink health reporter to destroy
4921 */
4922void
4923devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
4924{
b587bdaf 4925 mutex_lock(&reporter->devlink->reporters_lock);
a0bdcc59 4926 list_del(&reporter->list);
b587bdaf
MS		 4927 mutex_unlock(&reporter->devlink->reporters_lock);
4928 while (refcount_read(&reporter->refcount) > 1)
4929 msleep(100);
375cf8c6 4930 mutex_destroy(&reporter->dump_lock);
c8e1da0b
EBE		 4931 if (reporter->dump_fmsg)
4932 devlink_fmsg_free(reporter->dump_fmsg);
a0bdcc59
EBE		 4933 kfree(reporter);
4934}
4935EXPORT_SYMBOL_GPL(devlink_health_reporter_destroy);
4936
6ec8b6cd
MS		 4937static int
4938devlink_nl_health_reporter_fill(struct sk_buff *msg,
4939 struct devlink *devlink,
4940 struct devlink_health_reporter *reporter,
4941 enum devlink_command cmd, u32 portid,
4942 u32 seq, int flags)
4943{
4944 struct nlattr *reporter_attr;
4945 void *hdr;
4946
4947 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
4948 if (!hdr)
4949 return -EMSGSIZE;
4950
4951 if (devlink_nl_put_handle(msg, devlink))
4952 goto genlmsg_cancel;
4953
4954 reporter_attr = nla_nest_start_noflag(msg,
4955 DEVLINK_ATTR_HEALTH_REPORTER);
4956 if (!reporter_attr)
4957 goto genlmsg_cancel;
4958 if (nla_put_string(msg, DEVLINK_ATTR_HEALTH_REPORTER_NAME,
4959 reporter->ops->name))
4960 goto reporter_nest_cancel;
4961 if (nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_STATE,
4962 reporter->health_state))
4963 goto reporter_nest_cancel;
4964 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_ERR_COUNT,
4965 reporter->error_count, DEVLINK_ATTR_PAD))
4966 goto reporter_nest_cancel;
4967 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_RECOVER_COUNT,
4968 reporter->recovery_count, DEVLINK_ATTR_PAD))
4969 goto reporter_nest_cancel;
4970 if (reporter->ops->recover &&
4971 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD,
4972 reporter->graceful_period,
4973 DEVLINK_ATTR_PAD))
4974 goto reporter_nest_cancel;
4975 if (reporter->ops->recover &&
4976 nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER,
4977 reporter->auto_recover))
4978 goto reporter_nest_cancel;
4979 if (reporter->dump_fmsg &&
4980 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS,
4981 jiffies_to_msecs(reporter->dump_ts),
4982 DEVLINK_ATTR_PAD))
4983 goto reporter_nest_cancel;
4984 if (reporter->dump_fmsg &&
4985 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS_NS,
4986 reporter->dump_real_ts, DEVLINK_ATTR_PAD))
4987 goto reporter_nest_cancel;
4988
4989 nla_nest_end(msg, reporter_attr);
4990 genlmsg_end(msg, hdr);
4991 return 0;
4992
4993reporter_nest_cancel:
4994 nla_nest_end(msg, reporter_attr);
4995genlmsg_cancel:
4996 genlmsg_cancel(msg, hdr);
4997 return -EMSGSIZE;
4998}
4999
5000static void devlink_recover_notify(struct devlink_health_reporter *reporter,
5001 enum devlink_command cmd)
5002{
5003 struct sk_buff *msg;
5004 int err;
5005
5006 WARN_ON(cmd != DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
5007
5008 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5009 if (!msg)
5010 return;
5011
5012 err = devlink_nl_health_reporter_fill(msg, reporter->devlink,
5013 reporter, cmd, 0, 0, 0);
5014 if (err) {
5015 nlmsg_free(msg);
5016 return;
5017 }
5018
5019 genlmsg_multicast_netns(&devlink_nl_family,
5020 devlink_net(reporter->devlink),
5021 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
5022}
5023
6181e5cb
VG		 5024void
5025devlink_health_reporter_recovery_done(struct devlink_health_reporter *reporter)
5026{
5027 reporter->recovery_count++;
5028 reporter->last_recovery_ts = jiffies;
5029}
5030EXPORT_SYMBOL_GPL(devlink_health_reporter_recovery_done);
5031
c8e1da0b
EBE		 5032static int
5033devlink_health_reporter_recover(struct devlink_health_reporter *reporter,
e7a98105 5034 void *priv_ctx, struct netlink_ext_ack *extack)
c8e1da0b
EBE		 5035{
5036 int err;
5037
40281820
JP		 5038 if (reporter->health_state == DEVLINK_HEALTH_REPORTER_STATE_HEALTHY)
5039 return 0;
5040
c8e1da0b
EBE		 5041 if (!reporter->ops->recover)
5042 return -EOPNOTSUPP;
5043
e7a98105 5044 err = reporter->ops->recover(reporter, priv_ctx, extack);
c8e1da0b
EBE		 5045 if (err)
5046 return err;
5047
6181e5cb 5048 devlink_health_reporter_recovery_done(reporter);
c8e1da0b 5049 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_HEALTHY;
6ec8b6cd 5050 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
c8e1da0b
EBE		 5051
5052 return 0;
5053}
5054
5055static void
5056devlink_health_dump_clear(struct devlink_health_reporter *reporter)
5057{
5058 if (!reporter->dump_fmsg)
5059 return;
5060 devlink_fmsg_free(reporter->dump_fmsg);
5061 reporter->dump_fmsg = NULL;
5062}
5063
5064static int devlink_health_do_dump(struct devlink_health_reporter *reporter,
e7a98105
JP		 5065 void *priv_ctx,
5066 struct netlink_ext_ack *extack)
c8e1da0b
EBE		 5067{
5068 int err;
5069
5070 if (!reporter->ops->dump)
5071 return 0;
5072
5073 if (reporter->dump_fmsg)
5074 return 0;
5075
5076 reporter->dump_fmsg = devlink_fmsg_alloc();
5077 if (!reporter->dump_fmsg) {
5078 err = -ENOMEM;
5079 return err;
5080 }
5081
5082 err = devlink_fmsg_obj_nest_start(reporter->dump_fmsg);
5083 if (err)
5084 goto dump_err;
5085
5086 err = reporter->ops->dump(reporter, reporter->dump_fmsg,
e7a98105 5087 priv_ctx, extack);
c8e1da0b
EBE		 5088 if (err)
5089 goto dump_err;
5090
5091 err = devlink_fmsg_obj_nest_end(reporter->dump_fmsg);
5092 if (err)
5093 goto dump_err;
5094
5095 reporter->dump_ts = jiffies;
d279505b 5096 reporter->dump_real_ts = ktime_get_real_ns();
c8e1da0b
EBE		 5097
5098 return 0;
5099
5100dump_err:
5101 devlink_health_dump_clear(reporter);
5102 return err;
5103}
5104
5105int devlink_health_report(struct devlink_health_reporter *reporter,
5106 const char *msg, void *priv_ctx)
5107{
a0a21adb 5108 enum devlink_health_reporter_state prev_health_state;
c8e1da0b
EBE		 5109 struct devlink *devlink = reporter->devlink;
5110
5111 /* write a log message of the current error */
5112 WARN_ON(!msg);
5113 trace_devlink_health_report(devlink, reporter->ops->name, msg);
5114 reporter->error_count++;
a0a21adb
EBE		 5115 prev_health_state = reporter->health_state;
5116 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
6ec8b6cd 5117 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
c8e1da0b
EBE		 5118
5119 /* abort if the previous error wasn't recovered */
5120 if (reporter->auto_recover &&
a0a21adb 5121 (prev_health_state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY ||
c8e1da0b
EBE		 5122 jiffies - reporter->last_recovery_ts <
5123 msecs_to_jiffies(reporter->graceful_period))) {
5124 trace_devlink_health_recover_aborted(devlink,
5125 reporter->ops->name,
5126 reporter->health_state,
5127 jiffies -
5128 reporter->last_recovery_ts);
5129 return -ECANCELED;
5130 }
5131
5132 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
5133
5134 mutex_lock(&reporter->dump_lock);
5135 /* store current dump of current error, for later analysis */
e7a98105 5136 devlink_health_do_dump(reporter, priv_ctx, NULL);
c8e1da0b
EBE		 5137 mutex_unlock(&reporter->dump_lock);
5138
5139 if (reporter->auto_recover)
e7a98105
JP		 5140 return devlink_health_reporter_recover(reporter,
5141 priv_ctx, NULL);
c8e1da0b
EBE		 5142
5143 return 0;
5144}
5145EXPORT_SYMBOL_GPL(devlink_health_report);
5146
7afe335a 5147static struct devlink_health_reporter *
e44ef4e4
AL		 5148devlink_health_reporter_get_from_attrs(struct devlink *devlink,
5149 struct nlattr **attrs)
7afe335a 5150{
b587bdaf 5151 struct devlink_health_reporter *reporter;
7afe335a
EBE		 5152 char *reporter_name;
5153
e44ef4e4 5154 if (!attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME])
7afe335a
EBE		 5155 return NULL;
5156
e44ef4e4 5157 reporter_name = nla_data(attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME]);
b587bdaf
MS		 5158 mutex_lock(&devlink->reporters_lock);
5159 reporter = devlink_health_reporter_find_by_name(devlink, reporter_name);
5160 if (reporter)
5161 refcount_inc(&reporter->refcount);
5162 mutex_unlock(&devlink->reporters_lock);
5163 return reporter;
5164}
5165
e44ef4e4
AL		 5166static struct devlink_health_reporter *
5167devlink_health_reporter_get_from_info(struct devlink *devlink,
5168 struct genl_info *info)
5169{
5170 return devlink_health_reporter_get_from_attrs(devlink, info->attrs);
5171}
5172
5173static struct devlink_health_reporter *
5174devlink_health_reporter_get_from_cb(struct netlink_callback *cb)
5175{
ee85da53 5176 const struct genl_dumpit_info *info = genl_dumpit_info(cb);
e44ef4e4 5177 struct devlink_health_reporter *reporter;
ee85da53 5178 struct nlattr **attrs = info->attrs;
e44ef4e4 5179 struct devlink *devlink;
e44ef4e4
AL		 5180
5181 mutex_lock(&devlink_mutex);
5182 devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
5183 if (IS_ERR(devlink))
5184 goto unlock;
5185
5186 reporter = devlink_health_reporter_get_from_attrs(devlink, attrs);
5187 mutex_unlock(&devlink_mutex);
e44ef4e4
AL		 5188 return reporter;
5189unlock:
5190 mutex_unlock(&devlink_mutex);
e44ef4e4
AL		 5191 return NULL;
5192}
5193
b587bdaf
MS		 5194static void
5195devlink_health_reporter_put(struct devlink_health_reporter *reporter)
5196{
5197 refcount_dec(&reporter->refcount);
7afe335a
EBE		 5198}
5199
97ff3bd3
VG		 5200void
5201devlink_health_reporter_state_update(struct devlink_health_reporter *reporter,
5202 enum devlink_health_reporter_state state)
5203{
5204 if (WARN_ON(state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY &&
5205 state != DEVLINK_HEALTH_REPORTER_STATE_ERROR))
5206 return;
5207
5208 if (reporter->health_state == state)
5209 return;
5210
5211 reporter->health_state = state;
5212 trace_devlink_health_reporter_state_update(reporter->devlink,
5213 reporter->ops->name, state);
5214 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
5215}
5216EXPORT_SYMBOL_GPL(devlink_health_reporter_state_update);
5217
7afe335a
EBE		 5218static int devlink_nl_cmd_health_reporter_get_doit(struct sk_buff *skb,
5219 struct genl_info *info)
5220{
5221 struct devlink *devlink = info->user_ptr[0];
5222 struct devlink_health_reporter *reporter;
5223 struct sk_buff *msg;
5224 int err;
5225
5226 reporter = devlink_health_reporter_get_from_info(devlink, info);
5227 if (!reporter)
5228 return -EINVAL;
5229
5230 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
b587bdaf
MS		 5231 if (!msg) {
5232 err = -ENOMEM;
5233 goto out;
5234 }
7afe335a
EBE		 5235
5236 err = devlink_nl_health_reporter_fill(msg, devlink, reporter,
5237 DEVLINK_CMD_HEALTH_REPORTER_GET,
5238 info->snd_portid, info->snd_seq,
5239 0);
5240 if (err) {
5241 nlmsg_free(msg);
b587bdaf 5242 goto out;
7afe335a
EBE		 5243 }
5244
b587bdaf
MS		 5245 err = genlmsg_reply(msg, info);
5246out:
5247 devlink_health_reporter_put(reporter);
5248 return err;
7afe335a
EBE		 5249}
5250
5251static int
5252devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg,
5253 struct netlink_callback *cb)
5254{
5255 struct devlink_health_reporter *reporter;
5256 struct devlink *devlink;
5257 int start = cb->args[0];
5258 int idx = 0;
5259 int err;
5260
5261 mutex_lock(&devlink_mutex);
5262 list_for_each_entry(devlink, &devlink_list, list) {
5263 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
5264 continue;
b587bdaf 5265 mutex_lock(&devlink->reporters_lock);
7afe335a
EBE		 5266 list_for_each_entry(reporter, &devlink->reporter_list,
5267 list) {
5268 if (idx < start) {
5269 idx++;
5270 continue;
5271 }
5272 err = devlink_nl_health_reporter_fill(msg, devlink,
5273 reporter,
5274 DEVLINK_CMD_HEALTH_REPORTER_GET,
5275 NETLINK_CB(cb->skb).portid,
5276 cb->nlh->nlmsg_seq,
5277 NLM_F_MULTI);
5278 if (err) {
b587bdaf 5279 mutex_unlock(&devlink->reporters_lock);
7afe335a
EBE		 5280 goto out;
5281 }
5282 idx++;
5283 }
b587bdaf 5284 mutex_unlock(&devlink->reporters_lock);
7afe335a
EBE		 5285 }
5286out:
5287 mutex_unlock(&devlink_mutex);
5288
5289 cb->args[0] = idx;
5290 return msg->len;
5291}
5292
a1e55ec0
EBE		 5293static int
5294devlink_nl_cmd_health_reporter_set_doit(struct sk_buff *skb,
5295 struct genl_info *info)
5296{
5297 struct devlink *devlink = info->user_ptr[0];
5298 struct devlink_health_reporter *reporter;
b587bdaf 5299 int err;
a1e55ec0
EBE		 5300
5301 reporter = devlink_health_reporter_get_from_info(devlink, info);
5302 if (!reporter)
5303 return -EINVAL;
5304
5305 if (!reporter->ops->recover &&
5306 (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] ||
b587bdaf
MS		 5307 info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])) {
5308 err = -EOPNOTSUPP;
5309 goto out;
5310 }
a1e55ec0
EBE		 5311
5312 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD])
5313 reporter->graceful_period =
5314 nla_get_u64(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD]);
5315
5316 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])
5317 reporter->auto_recover =
5318 nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER]);
5319
b587bdaf 5320 devlink_health_reporter_put(reporter);
a1e55ec0 5321 return 0;
b587bdaf
MS		 5322out:
5323 devlink_health_reporter_put(reporter);
5324 return err;
a1e55ec0
EBE		 5325}
5326
20a0943a
EBE		 5327static int devlink_nl_cmd_health_reporter_recover_doit(struct sk_buff *skb,
5328 struct genl_info *info)
5329{
5330 struct devlink *devlink = info->user_ptr[0];
5331 struct devlink_health_reporter *reporter;
b587bdaf 5332 int err;
20a0943a
EBE		 5333
5334 reporter = devlink_health_reporter_get_from_info(devlink, info);
5335 if (!reporter)
5336 return -EINVAL;
5337
e7a98105 5338 err = devlink_health_reporter_recover(reporter, NULL, info->extack);
b587bdaf
MS		 5339
5340 devlink_health_reporter_put(reporter);
5341 return err;
20a0943a
EBE		 5342}
5343
fca42a27
EBE		 5344static int devlink_nl_cmd_health_reporter_diagnose_doit(struct sk_buff *skb,
5345 struct genl_info *info)
5346{
5347 struct devlink *devlink = info->user_ptr[0];
5348 struct devlink_health_reporter *reporter;
5349 struct devlink_fmsg *fmsg;
5350 int err;
5351
5352 reporter = devlink_health_reporter_get_from_info(devlink, info);
5353 if (!reporter)
5354 return -EINVAL;
5355
b587bdaf
MS		 5356 if (!reporter->ops->diagnose) {
5357 devlink_health_reporter_put(reporter);
fca42a27 5358 return -EOPNOTSUPP;
b587bdaf 5359 }
fca42a27
EBE		 5360
5361 fmsg = devlink_fmsg_alloc();
b587bdaf
MS		 5362 if (!fmsg) {
5363 devlink_health_reporter_put(reporter);
fca42a27 5364 return -ENOMEM;
b587bdaf 5365 }
fca42a27
EBE		 5366
5367 err = devlink_fmsg_obj_nest_start(fmsg);
5368 if (err)
5369 goto out;
5370
e7a98105 5371 err = reporter->ops->diagnose(reporter, fmsg, info->extack);
fca42a27
EBE		 5372 if (err)
5373 goto out;
5374
5375 err = devlink_fmsg_obj_nest_end(fmsg);
5376 if (err)
5377 goto out;
5378
5379 err = devlink_fmsg_snd(fmsg, info,
5380 DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE, 0);
5381
5382out:
5383 devlink_fmsg_free(fmsg);
b587bdaf 5384 devlink_health_reporter_put(reporter);
fca42a27
EBE		 5385 return err;
5386}
5387
e44ef4e4
AL		 5388static int
5389devlink_nl_cmd_health_reporter_dump_get_dumpit(struct sk_buff *skb,
5390 struct netlink_callback *cb)
35455e23 5391{
35455e23 5392 struct devlink_health_reporter *reporter;
e44ef4e4 5393 u64 start = cb->args[0];
35455e23
EBE		 5394 int err;
5395
e44ef4e4 5396 reporter = devlink_health_reporter_get_from_cb(cb);
35455e23
EBE		 5397 if (!reporter)
5398 return -EINVAL;
5399
b587bdaf 5400 if (!reporter->ops->dump) {
e44ef4e4
AL		 5401 err = -EOPNOTSUPP;
5402 goto out;
b587bdaf 5403 }
35455e23 5404 mutex_lock(&reporter->dump_lock);
e44ef4e4 5405 if (!start) {
e7a98105 5406 err = devlink_health_do_dump(reporter, NULL, cb->extack);
e44ef4e4
AL		 5407 if (err)
5408 goto unlock;
5409 cb->args[1] = reporter->dump_ts;
5410 }
5411 if (!reporter->dump_fmsg || cb->args[1] != reporter->dump_ts) {
5412 NL_SET_ERR_MSG_MOD(cb->extack, "Dump trampled, please retry");
5413 err = -EAGAIN;
5414 goto unlock;
5415 }
35455e23 5416
e44ef4e4
AL		 5417 err = devlink_fmsg_dumpit(reporter->dump_fmsg, skb, cb,
5418 DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET);
5419unlock:
35455e23 5420 mutex_unlock(&reporter->dump_lock);
e44ef4e4 5421out:
b587bdaf 5422 devlink_health_reporter_put(reporter);
35455e23
EBE		 5423 return err;
5424}
5425
5426static int
5427devlink_nl_cmd_health_reporter_dump_clear_doit(struct sk_buff *skb,
5428 struct genl_info *info)
5429{
5430 struct devlink *devlink = info->user_ptr[0];
5431 struct devlink_health_reporter *reporter;
5432
5433 reporter = devlink_health_reporter_get_from_info(devlink, info);
5434 if (!reporter)
5435 return -EINVAL;
5436
b587bdaf
MS		 5437 if (!reporter->ops->dump) {
5438 devlink_health_reporter_put(reporter);
35455e23 5439 return -EOPNOTSUPP;
b587bdaf 5440 }
35455e23
EBE		 5441
5442 mutex_lock(&reporter->dump_lock);
5443 devlink_health_dump_clear(reporter);
5444 mutex_unlock(&reporter->dump_lock);
b587bdaf 5445 devlink_health_reporter_put(reporter);
35455e23
EBE		 5446 return 0;
5447}
5448
0f420b6c
IS		 5449struct devlink_stats {
5450 u64 rx_bytes;
5451 u64 rx_packets;
5452 struct u64_stats_sync syncp;
5453};
5454
5455/**
5456 * struct devlink_trap_group_item - Packet trap group attributes.
5457 * @group: Immutable packet trap group attributes.
0f420b6c
IS		 5458 * @list: trap_group_list member.
5459 * @stats: Trap group statistics.
5460 *
5461 * Describes packet trap group attributes. Created by devlink during trap
a09b37fc 5462 * group registration.
0f420b6c
IS		 5463 */
5464struct devlink_trap_group_item {
5465 const struct devlink_trap_group *group;
0f420b6c
IS		 5466 struct list_head list;
5467 struct devlink_stats __percpu *stats;
5468};
5469
5470/**
5471 * struct devlink_trap_item - Packet trap attributes.
5472 * @trap: Immutable packet trap attributes.
5473 * @group_item: Associated group item.
5474 * @list: trap_list member.
5475 * @action: Trap action.
5476 * @stats: Trap statistics.
5477 * @priv: Driver private information.
5478 *
5479 * Describes both mutable and immutable packet trap attributes. Created by
5480 * devlink during trap registration and used for all trap related operations.
5481 */
5482struct devlink_trap_item {
5483 const struct devlink_trap *trap;
5484 struct devlink_trap_group_item *group_item;
5485 struct list_head list;
5486 enum devlink_trap_action action;
5487 struct devlink_stats __percpu *stats;
5488 void *priv;
5489};
5490
5491static struct devlink_trap_item *
5492devlink_trap_item_lookup(struct devlink *devlink, const char *name)
5493{
5494 struct devlink_trap_item *trap_item;
5495
5496 list_for_each_entry(trap_item, &devlink->trap_list, list) {
5497 if (!strcmp(trap_item->trap->name, name))
5498 return trap_item;
5499 }
5500
5501 return NULL;
5502}
5503
5504static struct devlink_trap_item *
5505devlink_trap_item_get_from_info(struct devlink *devlink,
5506 struct genl_info *info)
5507{
5508 struct nlattr *attr;
5509
5510 if (!info->attrs[DEVLINK_ATTR_TRAP_NAME])
5511 return NULL;
5512 attr = info->attrs[DEVLINK_ATTR_TRAP_NAME];
5513
5514 return devlink_trap_item_lookup(devlink, nla_data(attr));
5515}
5516
5517static int
5518devlink_trap_action_get_from_info(struct genl_info *info,
5519 enum devlink_trap_action *p_trap_action)
5520{
5521 u8 val;
5522
5523 val = nla_get_u8(info->attrs[DEVLINK_ATTR_TRAP_ACTION]);
5524 switch (val) {
5525 case DEVLINK_TRAP_ACTION_DROP: /* fall-through */
5526 case DEVLINK_TRAP_ACTION_TRAP:
5527 *p_trap_action = val;
5528 break;
5529 default:
5530 return -EINVAL;
5531 }
5532
5533 return 0;
5534}
5535
5536static int devlink_trap_metadata_put(struct sk_buff *msg,
5537 const struct devlink_trap *trap)
5538{
5539 struct nlattr *attr;
5540
5541 attr = nla_nest_start(msg, DEVLINK_ATTR_TRAP_METADATA);
5542 if (!attr)
5543 return -EMSGSIZE;
5544
5545 if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_IN_PORT) &&
5546 nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_IN_PORT))
5547 goto nla_put_failure;
85b0589e
JP		 5548 if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_FA_COOKIE) &&
5549 nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_FA_COOKIE))
5550 goto nla_put_failure;
0f420b6c
IS		 5551
5552 nla_nest_end(msg, attr);
5553
5554 return 0;
5555
5556nla_put_failure:
5557 nla_nest_cancel(msg, attr);
5558 return -EMSGSIZE;
5559}
5560
5561static void devlink_trap_stats_read(struct devlink_stats __percpu *trap_stats,
5562 struct devlink_stats *stats)
5563{
5564 int i;
5565
5566 memset(stats, 0, sizeof(*stats));
5567 for_each_possible_cpu(i) {
5568 struct devlink_stats *cpu_stats;
5569 u64 rx_packets, rx_bytes;
5570 unsigned int start;
5571
5572 cpu_stats = per_cpu_ptr(trap_stats, i);
5573 do {
5574 start = u64_stats_fetch_begin_irq(&cpu_stats->syncp);
5575 rx_packets = cpu_stats->rx_packets;
5576 rx_bytes = cpu_stats->rx_bytes;
5577 } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start));
5578
5579 stats->rx_packets += rx_packets;
5580 stats->rx_bytes += rx_bytes;
5581 }
5582}
5583
5584static int devlink_trap_stats_put(struct sk_buff *msg,
5585 struct devlink_stats __percpu *trap_stats)
5586{
5587 struct devlink_stats stats;
5588 struct nlattr *attr;
5589
5590 devlink_trap_stats_read(trap_stats, &stats);
5591
5592 attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
5593 if (!attr)
5594 return -EMSGSIZE;
5595
5596 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_PACKETS,
5597 stats.rx_packets, DEVLINK_ATTR_PAD))
5598 goto nla_put_failure;
5599
5600 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_BYTES,
5601 stats.rx_bytes, DEVLINK_ATTR_PAD))
5602 goto nla_put_failure;
5603
5604 nla_nest_end(msg, attr);
5605
5606 return 0;
5607
5608nla_put_failure:
5609 nla_nest_cancel(msg, attr);
5610 return -EMSGSIZE;
5611}
5612
5613static int devlink_nl_trap_fill(struct sk_buff *msg, struct devlink *devlink,
5614 const struct devlink_trap_item *trap_item,
5615 enum devlink_command cmd, u32 portid, u32 seq,
5616 int flags)
5617{
5618 struct devlink_trap_group_item *group_item = trap_item->group_item;
5619 void *hdr;
5620 int err;
5621
5622 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
5623 if (!hdr)
5624 return -EMSGSIZE;
5625
5626 if (devlink_nl_put_handle(msg, devlink))
5627 goto nla_put_failure;
5628
5629 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
5630 group_item->group->name))
5631 goto nla_put_failure;
5632
5633 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_NAME, trap_item->trap->name))
5634 goto nla_put_failure;
5635
5636 if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_TYPE, trap_item->trap->type))
5637 goto nla_put_failure;
5638
5639 if (trap_item->trap->generic &&
5640 nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
5641 goto nla_put_failure;
5642
5643 if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_ACTION, trap_item->action))
5644 goto nla_put_failure;
5645
5646 err = devlink_trap_metadata_put(msg, trap_item->trap);
5647 if (err)
5648 goto nla_put_failure;
5649
5650 err = devlink_trap_stats_put(msg, trap_item->stats);
5651 if (err)
5652 goto nla_put_failure;
5653
5654 genlmsg_end(msg, hdr);
5655
5656 return 0;
5657
5658nla_put_failure:
5659 genlmsg_cancel(msg, hdr);
5660 return -EMSGSIZE;
5661}
5662
5663static int devlink_nl_cmd_trap_get_doit(struct sk_buff *skb,
5664 struct genl_info *info)
5665{
5666 struct netlink_ext_ack *extack = info->extack;
5667 struct devlink *devlink = info->user_ptr[0];
5668 struct devlink_trap_item *trap_item;
5669 struct sk_buff *msg;
5670 int err;
5671
5672 if (list_empty(&devlink->trap_list))
5673 return -EOPNOTSUPP;
5674
5675 trap_item = devlink_trap_item_get_from_info(devlink, info);
5676 if (!trap_item) {
5677 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
5678 return -ENOENT;
5679 }
5680
5681 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5682 if (!msg)
5683 return -ENOMEM;
5684
5685 err = devlink_nl_trap_fill(msg, devlink, trap_item,
5686 DEVLINK_CMD_TRAP_NEW, info->snd_portid,
5687 info->snd_seq, 0);
5688 if (err)
5689 goto err_trap_fill;
5690
5691 return genlmsg_reply(msg, info);
5692
5693err_trap_fill:
5694 nlmsg_free(msg);
5695 return err;
5696}
5697
5698static int devlink_nl_cmd_trap_get_dumpit(struct sk_buff *msg,
5699 struct netlink_callback *cb)
5700{
5701 struct devlink_trap_item *trap_item;
5702 struct devlink *devlink;
5703 int start = cb->args[0];
5704 int idx = 0;
5705 int err;
5706
5707 mutex_lock(&devlink_mutex);
5708 list_for_each_entry(devlink, &devlink_list, list) {
5709 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
5710 continue;
5711 mutex_lock(&devlink->lock);
5712 list_for_each_entry(trap_item, &devlink->trap_list, list) {
5713 if (idx < start) {
5714 idx++;
5715 continue;
5716 }
5717 err = devlink_nl_trap_fill(msg, devlink, trap_item,
5718 DEVLINK_CMD_TRAP_NEW,
5719 NETLINK_CB(cb->skb).portid,
5720 cb->nlh->nlmsg_seq,
5721 NLM_F_MULTI);
5722 if (err) {
5723 mutex_unlock(&devlink->lock);
5724 goto out;
5725 }
5726 idx++;
5727 }
5728 mutex_unlock(&devlink->lock);
5729 }
5730out:
5731 mutex_unlock(&devlink_mutex);
5732
5733 cb->args[0] = idx;
5734 return msg->len;
5735}
5736
5737static int __devlink_trap_action_set(struct devlink *devlink,
5738 struct devlink_trap_item *trap_item,
5739 enum devlink_trap_action trap_action,
5740 struct netlink_ext_ack *extack)
5741{
5742 int err;
5743
5744 if (trap_item->action != trap_action &&
5745 trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP) {
5746 NL_SET_ERR_MSG_MOD(extack, "Cannot change action of non-drop traps. Skipping");
5747 return 0;
5748 }
5749
5750 err = devlink->ops->trap_action_set(devlink, trap_item->trap,
5751 trap_action);
5752 if (err)
5753 return err;
5754
5755 trap_item->action = trap_action;
5756
5757 return 0;
5758}
5759
5760static int devlink_trap_action_set(struct devlink *devlink,
5761 struct devlink_trap_item *trap_item,
5762 struct genl_info *info)
5763{
5764 enum devlink_trap_action trap_action;
5765 int err;
5766
5767 if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
5768 return 0;
5769
5770 err = devlink_trap_action_get_from_info(info, &trap_action);
5771 if (err) {
5772 NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
5773 return -EINVAL;
5774 }
5775
5776 return __devlink_trap_action_set(devlink, trap_item, trap_action,
5777 info->extack);
5778}
5779
5780static int devlink_nl_cmd_trap_set_doit(struct sk_buff *skb,
5781 struct genl_info *info)
5782{
5783 struct netlink_ext_ack *extack = info->extack;
5784 struct devlink *devlink = info->user_ptr[0];
5785 struct devlink_trap_item *trap_item;
5786 int err;
5787
5788 if (list_empty(&devlink->trap_list))
5789 return -EOPNOTSUPP;
5790
5791 trap_item = devlink_trap_item_get_from_info(devlink, info);
5792 if (!trap_item) {
5793 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
5794 return -ENOENT;
5795 }
5796
5797 err = devlink_trap_action_set(devlink, trap_item, info);
5798 if (err)
5799 return err;
5800
5801 return 0;
5802}
5803
5804static struct devlink_trap_group_item *
5805devlink_trap_group_item_lookup(struct devlink *devlink, const char *name)
5806{
5807 struct devlink_trap_group_item *group_item;
5808
5809 list_for_each_entry(group_item, &devlink->trap_group_list, list) {
5810 if (!strcmp(group_item->group->name, name))
5811 return group_item;
5812 }
5813
5814 return NULL;
5815}
5816
107f1678
IS		 5817static struct devlink_trap_group_item *
5818devlink_trap_group_item_lookup_by_id(struct devlink *devlink, u16 id)
5819{
5820 struct devlink_trap_group_item *group_item;
5821
5822 list_for_each_entry(group_item, &devlink->trap_group_list, list) {
5823 if (group_item->group->id == id)
5824 return group_item;
5825 }
5826
5827 return NULL;
5828}
5829
0f420b6c
IS		 5830static struct devlink_trap_group_item *
5831devlink_trap_group_item_get_from_info(struct devlink *devlink,
5832 struct genl_info *info)
5833{
5834 char *name;
5835
5836 if (!info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME])
5837 return NULL;
5838 name = nla_data(info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME]);
5839
5840 return devlink_trap_group_item_lookup(devlink, name);
5841}
5842
5843static int
5844devlink_nl_trap_group_fill(struct sk_buff *msg, struct devlink *devlink,
5845 const struct devlink_trap_group_item *group_item,
5846 enum devlink_command cmd, u32 portid, u32 seq,
5847 int flags)
5848{
5849 void *hdr;
5850 int err;
5851
5852 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
5853 if (!hdr)
5854 return -EMSGSIZE;
5855
5856 if (devlink_nl_put_handle(msg, devlink))
5857 goto nla_put_failure;
5858
5859 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
5860 group_item->group->name))
5861 goto nla_put_failure;
5862
5863 if (group_item->group->generic &&
5864 nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
5865 goto nla_put_failure;
5866
5867 err = devlink_trap_stats_put(msg, group_item->stats);
5868 if (err)
5869 goto nla_put_failure;
5870
5871 genlmsg_end(msg, hdr);
5872
5873 return 0;
5874
5875nla_put_failure:
5876 genlmsg_cancel(msg, hdr);
5877 return -EMSGSIZE;
5878}
5879
5880static int devlink_nl_cmd_trap_group_get_doit(struct sk_buff *skb,
5881 struct genl_info *info)
5882{
5883 struct netlink_ext_ack *extack = info->extack;
5884 struct devlink *devlink = info->user_ptr[0];
5885 struct devlink_trap_group_item *group_item;
5886 struct sk_buff *msg;
5887 int err;
5888
5889 if (list_empty(&devlink->trap_group_list))
5890 return -EOPNOTSUPP;
5891
5892 group_item = devlink_trap_group_item_get_from_info(devlink, info);
5893 if (!group_item) {
5894 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
5895 return -ENOENT;
5896 }
5897
5898 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5899 if (!msg)
5900 return -ENOMEM;
5901
5902 err = devlink_nl_trap_group_fill(msg, devlink, group_item,
5903 DEVLINK_CMD_TRAP_GROUP_NEW,
5904 info->snd_portid, info->snd_seq, 0);
5905 if (err)
5906 goto err_trap_group_fill;
5907
5908 return genlmsg_reply(msg, info);
5909
5910err_trap_group_fill:
5911 nlmsg_free(msg);
5912 return err;
5913}
5914
5915static int devlink_nl_cmd_trap_group_get_dumpit(struct sk_buff *msg,
5916 struct netlink_callback *cb)
5917{
5918 enum devlink_command cmd = DEVLINK_CMD_TRAP_GROUP_NEW;
5919 struct devlink_trap_group_item *group_item;
5920 u32 portid = NETLINK_CB(cb->skb).portid;
5921 struct devlink *devlink;
5922 int start = cb->args[0];
5923 int idx = 0;
5924 int err;
5925
5926 mutex_lock(&devlink_mutex);
5927 list_for_each_entry(devlink, &devlink_list, list) {
5928 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
5929 continue;
5930 mutex_lock(&devlink->lock);
5931 list_for_each_entry(group_item, &devlink->trap_group_list,
5932 list) {
5933 if (idx < start) {
5934 idx++;
5935 continue;
5936 }
5937 err = devlink_nl_trap_group_fill(msg, devlink,
5938 group_item, cmd,
5939 portid,
5940 cb->nlh->nlmsg_seq,
5941 NLM_F_MULTI);
5942 if (err) {
5943 mutex_unlock(&devlink->lock);
5944 goto out;
5945 }
5946 idx++;
5947 }
5948 mutex_unlock(&devlink->lock);
5949 }
5950out:
5951 mutex_unlock(&devlink_mutex);
5952
5953 cb->args[0] = idx;
5954 return msg->len;
5955}
5956
5957static int
5958__devlink_trap_group_action_set(struct devlink *devlink,
5959 struct devlink_trap_group_item *group_item,
5960 enum devlink_trap_action trap_action,
5961 struct netlink_ext_ack *extack)
5962{
5963 const char *group_name = group_item->group->name;
5964 struct devlink_trap_item *trap_item;
5965 int err;
5966
5967 list_for_each_entry(trap_item, &devlink->trap_list, list) {
107f1678 5968 if (strcmp(trap_item->group_item->group->name, group_name))
0f420b6c
IS		 5969 continue;
5970 err = __devlink_trap_action_set(devlink, trap_item,
5971 trap_action, extack);
5972 if (err)
5973 return err;
5974 }
5975
5976 return 0;
5977}
5978
5979static int
5980devlink_trap_group_action_set(struct devlink *devlink,
5981 struct devlink_trap_group_item *group_item,
5982 struct genl_info *info)
5983{
5984 enum devlink_trap_action trap_action;
5985 int err;
5986
5987 if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
5988 return 0;
5989
5990 err = devlink_trap_action_get_from_info(info, &trap_action);
5991 if (err) {
5992 NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
5993 return -EINVAL;
5994 }
5995
5996 err = __devlink_trap_group_action_set(devlink, group_item, trap_action,
5997 info->extack);
5998 if (err)
5999 return err;
6000
6001 return 0;
6002}
6003
6004static int devlink_nl_cmd_trap_group_set_doit(struct sk_buff *skb,
6005 struct genl_info *info)
6006{
6007 struct netlink_ext_ack *extack = info->extack;
6008 struct devlink *devlink = info->user_ptr[0];
6009 struct devlink_trap_group_item *group_item;
6010 int err;
6011
6012 if (list_empty(&devlink->trap_group_list))
6013 return -EOPNOTSUPP;
6014
6015 group_item = devlink_trap_group_item_get_from_info(devlink, info);
6016 if (!group_item) {
6017 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
6018 return -ENOENT;
6019 }
6020
6021 err = devlink_trap_group_action_set(devlink, group_item, info);
6022 if (err)
6023 return err;
6024
6025 return 0;
6026}
6027
bfcd3a46
JP		 6028static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = {
6029 [DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING },
6030 [DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING },
6031 [DEVLINK_ATTR_PORT_INDEX] = { .type = NLA_U32 },
6032 [DEVLINK_ATTR_PORT_TYPE] = { .type = NLA_U16 },
6033 [DEVLINK_ATTR_PORT_SPLIT_COUNT] = { .type = NLA_U32 },
bf797471
JP		 6034 [DEVLINK_ATTR_SB_INDEX] = { .type = NLA_U32 },
6035 [DEVLINK_ATTR_SB_POOL_INDEX] = { .type = NLA_U16 },
6036 [DEVLINK_ATTR_SB_POOL_TYPE] = { .type = NLA_U8 },
6037 [DEVLINK_ATTR_SB_POOL_SIZE] = { .type = NLA_U32 },
6038 [DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE] = { .type = NLA_U8 },
6039 [DEVLINK_ATTR_SB_THRESHOLD] = { .type = NLA_U32 },
6040 [DEVLINK_ATTR_SB_TC_INDEX] = { .type = NLA_U16 },
08f4b591 6041 [DEVLINK_ATTR_ESWITCH_MODE] = { .type = NLA_U16 },
59bfde01 6042 [DEVLINK_ATTR_ESWITCH_INLINE_MODE] = { .type = NLA_U8 },
f43e9b06 6043 [DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = { .type = NLA_U8 },
1555d204
AS		 6044 [DEVLINK_ATTR_DPIPE_TABLE_NAME] = { .type = NLA_NUL_STRING },
6045 [DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED] = { .type = NLA_U8 },
d9f9b9a4
AS		 6046 [DEVLINK_ATTR_RESOURCE_ID] = { .type = NLA_U64},
6047 [DEVLINK_ATTR_RESOURCE_SIZE] = { .type = NLA_U64},
e3b7ca18
MS		 6048 [DEVLINK_ATTR_PARAM_NAME] = { .type = NLA_NUL_STRING },
6049 [DEVLINK_ATTR_PARAM_TYPE] = { .type = NLA_U8 },
6050 [DEVLINK_ATTR_PARAM_VALUE_CMODE] = { .type = NLA_U8 },
d8db7ea5 6051 [DEVLINK_ATTR_REGION_NAME] = { .type = NLA_NUL_STRING },
866319bb 6052 [DEVLINK_ATTR_REGION_SNAPSHOT_ID] = { .type = NLA_U32 },
ff3b63b8
JK		 6053 [DEVLINK_ATTR_REGION_CHUNK_ADDR] = { .type = NLA_U64 },
6054 [DEVLINK_ATTR_REGION_CHUNK_LEN] = { .type = NLA_U64 },
7afe335a 6055 [DEVLINK_ATTR_HEALTH_REPORTER_NAME] = { .type = NLA_NUL_STRING },
a1e55ec0
EBE		 6056 [DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] = { .type = NLA_U64 },
6057 [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER] = { .type = NLA_U8 },
76726ccb
JK		 6058 [DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME] = { .type = NLA_NUL_STRING },
6059 [DEVLINK_ATTR_FLASH_UPDATE_COMPONENT] = { .type = NLA_NUL_STRING },
0f420b6c
IS		 6060 [DEVLINK_ATTR_TRAP_NAME] = { .type = NLA_NUL_STRING },
6061 [DEVLINK_ATTR_TRAP_ACTION] = { .type = NLA_U8 },
6062 [DEVLINK_ATTR_TRAP_GROUP_NAME] = { .type = NLA_NUL_STRING },
070c63f2
JP		 6063 [DEVLINK_ATTR_NETNS_PID] = { .type = NLA_U32 },
6064 [DEVLINK_ATTR_NETNS_FD] = { .type = NLA_U32 },
6065 [DEVLINK_ATTR_NETNS_ID] = { .type = NLA_U32 },
bfcd3a46
JP		 6066};
6067
6068static const struct genl_ops devlink_nl_ops[] = {
6069 {
6070 .cmd = DEVLINK_CMD_GET,
ef6243ac 6071 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46
JP		 6072 .doit = devlink_nl_cmd_get_doit,
6073 .dumpit = devlink_nl_cmd_get_dumpit,
1fc2257e 6074 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
bfcd3a46
JP		 6075 /* can be retrieved by unprivileged users */
6076 },
6077 {
6078 .cmd = DEVLINK_CMD_PORT_GET,
ef6243ac 6079 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46
JP		 6080 .doit = devlink_nl_cmd_port_get_doit,
6081 .dumpit = devlink_nl_cmd_port_get_dumpit,
bfcd3a46
JP		 6082 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
6083 /* can be retrieved by unprivileged users */
6084 },
6085 {
6086 .cmd = DEVLINK_CMD_PORT_SET,
ef6243ac 6087 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46 6088 .doit = devlink_nl_cmd_port_set_doit,
bfcd3a46
JP		 6089 .flags = GENL_ADMIN_PERM,
6090 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
6091 },
6092 {
6093 .cmd = DEVLINK_CMD_PORT_SPLIT,
ef6243ac 6094 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46 6095 .doit = devlink_nl_cmd_port_split_doit,
bfcd3a46 6096 .flags = GENL_ADMIN_PERM,
2406e7e5
AS		 6097 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6098 DEVLINK_NL_FLAG_NO_LOCK,
bfcd3a46
JP		 6099 },
6100 {
6101 .cmd = DEVLINK_CMD_PORT_UNSPLIT,
ef6243ac 6102 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46 6103 .doit = devlink_nl_cmd_port_unsplit_doit,
bfcd3a46 6104 .flags = GENL_ADMIN_PERM,
2406e7e5
AS		 6105 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6106 DEVLINK_NL_FLAG_NO_LOCK,
bfcd3a46 6107 },
bf797471
JP		 6108 {
6109 .cmd = DEVLINK_CMD_SB_GET,
ef6243ac 6110 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471
JP		 6111 .doit = devlink_nl_cmd_sb_get_doit,
6112 .dumpit = devlink_nl_cmd_sb_get_dumpit,
bf797471
JP		 6113 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6114 DEVLINK_NL_FLAG_NEED_SB,
6115 /* can be retrieved by unprivileged users */
6116 },
6117 {
6118 .cmd = DEVLINK_CMD_SB_POOL_GET,
ef6243ac 6119 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471
JP		 6120 .doit = devlink_nl_cmd_sb_pool_get_doit,
6121 .dumpit = devlink_nl_cmd_sb_pool_get_dumpit,
bf797471
JP		 6122 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6123 DEVLINK_NL_FLAG_NEED_SB,
6124 /* can be retrieved by unprivileged users */
6125 },
6126 {
6127 .cmd = DEVLINK_CMD_SB_POOL_SET,
ef6243ac 6128 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471 6129 .doit = devlink_nl_cmd_sb_pool_set_doit,
bf797471
JP		 6130 .flags = GENL_ADMIN_PERM,
6131 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6132 DEVLINK_NL_FLAG_NEED_SB,
6133 },
6134 {
6135 .cmd = DEVLINK_CMD_SB_PORT_POOL_GET,
ef6243ac 6136 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471
JP		 6137 .doit = devlink_nl_cmd_sb_port_pool_get_doit,
6138 .dumpit = devlink_nl_cmd_sb_port_pool_get_dumpit,
bf797471
JP		 6139 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
6140 DEVLINK_NL_FLAG_NEED_SB,
6141 /* can be retrieved by unprivileged users */
6142 },
6143 {
6144 .cmd = DEVLINK_CMD_SB_PORT_POOL_SET,
ef6243ac 6145 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471 6146 .doit = devlink_nl_cmd_sb_port_pool_set_doit,
bf797471
JP		 6147 .flags = GENL_ADMIN_PERM,
6148 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
6149 DEVLINK_NL_FLAG_NEED_SB,
6150 },
6151 {
6152 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_GET,
ef6243ac 6153 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471
JP		 6154 .doit = devlink_nl_cmd_sb_tc_pool_bind_get_doit,
6155 .dumpit = devlink_nl_cmd_sb_tc_pool_bind_get_dumpit,
bf797471
JP		 6156 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
6157 DEVLINK_NL_FLAG_NEED_SB,
6158 /* can be retrieved by unprivileged users */
6159 },
6160 {
6161 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_SET,
ef6243ac 6162 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471 6163 .doit = devlink_nl_cmd_sb_tc_pool_bind_set_doit,
bf797471
JP		 6164 .flags = GENL_ADMIN_PERM,
6165 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
6166 DEVLINK_NL_FLAG_NEED_SB,
6167 },
df38dafd
JP		 6168 {
6169 .cmd = DEVLINK_CMD_SB_OCC_SNAPSHOT,
ef6243ac 6170 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
df38dafd 6171 .doit = devlink_nl_cmd_sb_occ_snapshot_doit,
df38dafd
JP		 6172 .flags = GENL_ADMIN_PERM,
6173 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
2406e7e5 6174 DEVLINK_NL_FLAG_NEED_SB,
df38dafd
JP		 6175 },
6176 {
6177 .cmd = DEVLINK_CMD_SB_OCC_MAX_CLEAR,
ef6243ac 6178 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
df38dafd 6179 .doit = devlink_nl_cmd_sb_occ_max_clear_doit,
df38dafd
JP		 6180 .flags = GENL_ADMIN_PERM,
6181 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
2406e7e5 6182 DEVLINK_NL_FLAG_NEED_SB,
df38dafd 6183 },
08f4b591 6184 {
adf200f3 6185 .cmd = DEVLINK_CMD_ESWITCH_GET,
ef6243ac 6186 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
adf200f3 6187 .doit = devlink_nl_cmd_eswitch_get_doit,
08f4b591 6188 .flags = GENL_ADMIN_PERM,
98fed6eb
PP		 6189 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6190 DEVLINK_NL_FLAG_NO_LOCK,
08f4b591
OG		 6191 },
6192 {
adf200f3 6193 .cmd = DEVLINK_CMD_ESWITCH_SET,
ef6243ac 6194 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
adf200f3 6195 .doit = devlink_nl_cmd_eswitch_set_doit,
08f4b591 6196 .flags = GENL_ADMIN_PERM,
7ac1cc9a
JK		 6197 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6198 DEVLINK_NL_FLAG_NO_LOCK,
08f4b591 6199 },
1555d204
AS		 6200 {
6201 .cmd = DEVLINK_CMD_DPIPE_TABLE_GET,
ef6243ac 6202 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1555d204 6203 .doit = devlink_nl_cmd_dpipe_table_get,
1555d204 6204 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
67ae686b 6205 /* can be retrieved by unprivileged users */
1555d204
AS		 6206 },
6207 {
6208 .cmd = DEVLINK_CMD_DPIPE_ENTRIES_GET,
ef6243ac 6209 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1555d204 6210 .doit = devlink_nl_cmd_dpipe_entries_get,
1555d204 6211 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
67ae686b 6212 /* can be retrieved by unprivileged users */
1555d204
AS		 6213 },
6214 {
6215 .cmd = DEVLINK_CMD_DPIPE_HEADERS_GET,
ef6243ac 6216 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1555d204 6217 .doit = devlink_nl_cmd_dpipe_headers_get,
1555d204 6218 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
67ae686b 6219 /* can be retrieved by unprivileged users */
1555d204
AS		 6220 },
6221 {
6222 .cmd = DEVLINK_CMD_DPIPE_TABLE_COUNTERS_SET,
ef6243ac 6223 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1555d204 6224 .doit = devlink_nl_cmd_dpipe_table_counters_set,
1555d204
AS		 6225 .flags = GENL_ADMIN_PERM,
6226 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6227 },
d9f9b9a4
AS		 6228 {
6229 .cmd = DEVLINK_CMD_RESOURCE_SET,
ef6243ac 6230 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
d9f9b9a4 6231 .doit = devlink_nl_cmd_resource_set,
d9f9b9a4
AS		 6232 .flags = GENL_ADMIN_PERM,
6233 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6234 },
6235 {
6236 .cmd = DEVLINK_CMD_RESOURCE_DUMP,
ef6243ac 6237 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
d9f9b9a4 6238 .doit = devlink_nl_cmd_resource_dump,
d9f9b9a4 6239 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
67ae686b 6240 /* can be retrieved by unprivileged users */
d9f9b9a4 6241 },
2d8dc5bb
AS		 6242 {
6243 .cmd = DEVLINK_CMD_RELOAD,
ef6243ac 6244 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2d8dc5bb 6245 .doit = devlink_nl_cmd_reload,
2d8dc5bb
AS		 6246 .flags = GENL_ADMIN_PERM,
6247 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6248 DEVLINK_NL_FLAG_NO_LOCK,
6249 },
45f05def
MS		 6250 {
6251 .cmd = DEVLINK_CMD_PARAM_GET,
ef6243ac 6252 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
45f05def
MS		 6253 .doit = devlink_nl_cmd_param_get_doit,
6254 .dumpit = devlink_nl_cmd_param_get_dumpit,
45f05def
MS		 6255 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6256 /* can be retrieved by unprivileged users */
6257 },
e3b7ca18
MS		 6258 {
6259 .cmd = DEVLINK_CMD_PARAM_SET,
ef6243ac 6260 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
e3b7ca18 6261 .doit = devlink_nl_cmd_param_set_doit,
e3b7ca18
MS		 6262 .flags = GENL_ADMIN_PERM,
6263 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6264 },
f4601dee
VV		 6265 {
6266 .cmd = DEVLINK_CMD_PORT_PARAM_GET,
ef6243ac 6267 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
f4601dee
VV		 6268 .doit = devlink_nl_cmd_port_param_get_doit,
6269 .dumpit = devlink_nl_cmd_port_param_get_dumpit,
f4601dee
VV		 6270 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
6271 /* can be retrieved by unprivileged users */
6272 },
9c54873b
VV		 6273 {
6274 .cmd = DEVLINK_CMD_PORT_PARAM_SET,
ef6243ac 6275 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
9c54873b 6276 .doit = devlink_nl_cmd_port_param_set_doit,
9c54873b
VV		 6277 .flags = GENL_ADMIN_PERM,
6278 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
6279 },
d8db7ea5
AV		 6280 {
6281 .cmd = DEVLINK_CMD_REGION_GET,
ef6243ac 6282 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
d8db7ea5
AV		 6283 .doit = devlink_nl_cmd_region_get_doit,
6284 .dumpit = devlink_nl_cmd_region_get_dumpit,
d8db7ea5
AV		 6285 .flags = GENL_ADMIN_PERM,
6286 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6287 },
866319bb
AV		 6288 {
6289 .cmd = DEVLINK_CMD_REGION_DEL,
ef6243ac 6290 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
866319bb 6291 .doit = devlink_nl_cmd_region_del,
866319bb
AV		 6292 .flags = GENL_ADMIN_PERM,
6293 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6294 },
4e54795a
AV		 6295 {
6296 .cmd = DEVLINK_CMD_REGION_READ,
ee85da53
JP		 6297 .validate = GENL_DONT_VALIDATE_STRICT |
6298 GENL_DONT_VALIDATE_DUMP_STRICT,
4e54795a 6299 .dumpit = devlink_nl_cmd_region_read_dumpit,
4e54795a
AV		 6300 .flags = GENL_ADMIN_PERM,
6301 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6302 },
f9cf2288
JK		 6303 {
6304 .cmd = DEVLINK_CMD_INFO_GET,
ef6243ac 6305 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
f9cf2288
JK		 6306 .doit = devlink_nl_cmd_info_get_doit,
6307 .dumpit = devlink_nl_cmd_info_get_dumpit,
f9cf2288
JK		 6308 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6309 /* can be retrieved by unprivileged users */
6310 },
7afe335a
EBE		 6311 {
6312 .cmd = DEVLINK_CMD_HEALTH_REPORTER_GET,
ef6243ac 6313 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7afe335a
EBE		 6314 .doit = devlink_nl_cmd_health_reporter_get_doit,
6315 .dumpit = devlink_nl_cmd_health_reporter_get_dumpit,
b587bdaf
MS		 6316 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6317 DEVLINK_NL_FLAG_NO_LOCK,
7afe335a
EBE		 6318 /* can be retrieved by unprivileged users */
6319 },
a1e55ec0
EBE		 6320 {
6321 .cmd = DEVLINK_CMD_HEALTH_REPORTER_SET,
ef6243ac 6322 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
a1e55ec0 6323 .doit = devlink_nl_cmd_health_reporter_set_doit,
a1e55ec0 6324 .flags = GENL_ADMIN_PERM,
b587bdaf
MS		 6325 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6326 DEVLINK_NL_FLAG_NO_LOCK,
a1e55ec0 6327 },
20a0943a
EBE		 6328 {
6329 .cmd = DEVLINK_CMD_HEALTH_REPORTER_RECOVER,
ef6243ac 6330 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
20a0943a 6331 .doit = devlink_nl_cmd_health_reporter_recover_doit,
20a0943a 6332 .flags = GENL_ADMIN_PERM,
b587bdaf
MS		 6333 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6334 DEVLINK_NL_FLAG_NO_LOCK,
20a0943a 6335 },
fca42a27
EBE		 6336 {
6337 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE,
ef6243ac 6338 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
fca42a27 6339 .doit = devlink_nl_cmd_health_reporter_diagnose_doit,
fca42a27 6340 .flags = GENL_ADMIN_PERM,
b587bdaf
MS		 6341 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6342 DEVLINK_NL_FLAG_NO_LOCK,
fca42a27 6343 },
35455e23
EBE		 6344 {
6345 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET,
82a843de
JP		 6346 .validate = GENL_DONT_VALIDATE_STRICT |
6347 GENL_DONT_VALIDATE_DUMP_STRICT,
e44ef4e4 6348 .dumpit = devlink_nl_cmd_health_reporter_dump_get_dumpit,
35455e23
EBE		 6349 .flags = GENL_ADMIN_PERM,
6350 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6351 DEVLINK_NL_FLAG_NO_LOCK,
6352 },
6353 {
6354 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_CLEAR,
ef6243ac 6355 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
35455e23 6356 .doit = devlink_nl_cmd_health_reporter_dump_clear_doit,
35455e23
EBE		 6357 .flags = GENL_ADMIN_PERM,
6358 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6359 DEVLINK_NL_FLAG_NO_LOCK,
6360 },
76726ccb
JK		 6361 {
6362 .cmd = DEVLINK_CMD_FLASH_UPDATE,
ef6243ac 6363 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
76726ccb 6364 .doit = devlink_nl_cmd_flash_update,
76726ccb
JK		 6365 .flags = GENL_ADMIN_PERM,
6366 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6367 },
0f420b6c
IS		 6368 {
6369 .cmd = DEVLINK_CMD_TRAP_GET,
6370 .doit = devlink_nl_cmd_trap_get_doit,
6371 .dumpit = devlink_nl_cmd_trap_get_dumpit,
6372 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6373 /* can be retrieved by unprivileged users */
6374 },
6375 {
6376 .cmd = DEVLINK_CMD_TRAP_SET,
6377 .doit = devlink_nl_cmd_trap_set_doit,
6378 .flags = GENL_ADMIN_PERM,
6379 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6380 },
6381 {
6382 .cmd = DEVLINK_CMD_TRAP_GROUP_GET,
6383 .doit = devlink_nl_cmd_trap_group_get_doit,
6384 .dumpit = devlink_nl_cmd_trap_group_get_dumpit,
6385 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6386 /* can be retrieved by unprivileged users */
6387 },
6388 {
6389 .cmd = DEVLINK_CMD_TRAP_GROUP_SET,
6390 .doit = devlink_nl_cmd_trap_group_set_doit,
6391 .flags = GENL_ADMIN_PERM,
6392 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6393 },
bfcd3a46
JP		 6394};
6395
56989f6d 6396static struct genl_family devlink_nl_family __ro_after_init = {
489111e5
JB		 6397 .name = DEVLINK_GENL_NAME,
6398 .version = DEVLINK_GENL_VERSION,
6399 .maxattr = DEVLINK_ATTR_MAX,
3b0f31f2 6400 .policy = devlink_nl_policy,
489111e5
JB		 6401 .netnsok = true,
6402 .pre_doit = devlink_nl_pre_doit,
6403 .post_doit = devlink_nl_post_doit,
6404 .module = THIS_MODULE,
6405 .ops = devlink_nl_ops,
6406 .n_ops = ARRAY_SIZE(devlink_nl_ops),
6407 .mcgrps = devlink_nl_mcgrps,
6408 .n_mcgrps = ARRAY_SIZE(devlink_nl_mcgrps),
6409};
6410
bfcd3a46
JP		 6411/**
6412 * devlink_alloc - Allocate new devlink instance resources
6413 *
6414 * @ops: ops
6415 * @priv_size: size of user private data
6416 *
6417 * Allocate new devlink instance resources, including devlink index
6418 * and name.
6419 */
6420struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size)
6421{
6422 struct devlink *devlink;
6423
be6fe1d8
JK		 6424 if (WARN_ON(!ops))
6425 return NULL;
6426
bfcd3a46
JP		 6427 devlink = kzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL);
6428 if (!devlink)
6429 return NULL;
6430 devlink->ops = ops;
8273fd84 6431 __devlink_net_set(devlink, &init_net);
bfcd3a46 6432 INIT_LIST_HEAD(&devlink->port_list);
bf797471 6433 INIT_LIST_HEAD(&devlink->sb_list);
1555d204 6434 INIT_LIST_HEAD_RCU(&devlink->dpipe_table_list);
d9f9b9a4 6435 INIT_LIST_HEAD(&devlink->resource_list);
eabaef18 6436 INIT_LIST_HEAD(&devlink->param_list);
b16ebe92 6437 INIT_LIST_HEAD(&devlink->region_list);
a0bdcc59 6438 INIT_LIST_HEAD(&devlink->reporter_list);
0f420b6c
IS		 6439 INIT_LIST_HEAD(&devlink->trap_list);
6440 INIT_LIST_HEAD(&devlink->trap_group_list);
2406e7e5 6441 mutex_init(&devlink->lock);
b587bdaf 6442 mutex_init(&devlink->reporters_lock);
bfcd3a46
JP		 6443 return devlink;
6444}
6445EXPORT_SYMBOL_GPL(devlink_alloc);
6446
6447/**
6448 * devlink_register - Register devlink instance
6449 *
6450 * @devlink: devlink
eeaadd82 6451 * @dev: parent device
bfcd3a46
JP		 6452 */
6453int devlink_register(struct devlink *devlink, struct device *dev)
6454{
6455 mutex_lock(&devlink_mutex);
6456 devlink->dev = dev;
8273fd84 6457 devlink->registered = true;
bfcd3a46
JP		 6458 list_add_tail(&devlink->list, &devlink_list);
6459 devlink_notify(devlink, DEVLINK_CMD_NEW);
6460 mutex_unlock(&devlink_mutex);
6461 return 0;
6462}
6463EXPORT_SYMBOL_GPL(devlink_register);
6464
6465/**
6466 * devlink_unregister - Unregister devlink instance
6467 *
6468 * @devlink: devlink
6469 */
6470void devlink_unregister(struct devlink *devlink)
6471{
6472 mutex_lock(&devlink_mutex);
a0c76345
JP		 6473 WARN_ON(devlink_reload_supported(devlink) &&
6474 devlink->reload_enabled);
bfcd3a46
JP		 6475 devlink_notify(devlink, DEVLINK_CMD_DEL);
6476 list_del(&devlink->list);
6477 mutex_unlock(&devlink_mutex);
6478}
6479EXPORT_SYMBOL_GPL(devlink_unregister);
6480
a0c76345
JP		 6481/**
6482 * devlink_reload_enable - Enable reload of devlink instance
6483 *
6484 * @devlink: devlink
6485 *
6486 * Should be called at end of device initialization
6487 * process when reload operation is supported.
6488 */
6489void devlink_reload_enable(struct devlink *devlink)
6490{
6491 mutex_lock(&devlink_mutex);
6492 devlink->reload_enabled = true;
6493 mutex_unlock(&devlink_mutex);
6494}
6495EXPORT_SYMBOL_GPL(devlink_reload_enable);
6496
6497/**
6498 * devlink_reload_disable - Disable reload of devlink instance
6499 *
6500 * @devlink: devlink
6501 *
6502 * Should be called at the beginning of device cleanup
6503 * process when reload operation is supported.
6504 */
6505void devlink_reload_disable(struct devlink *devlink)
6506{
6507 mutex_lock(&devlink_mutex);
6508 /* Mutex is taken which ensures that no reload operation is in
6509 * progress while setting up forbidded flag.
6510 */
6511 devlink->reload_enabled = false;
6512 mutex_unlock(&devlink_mutex);
6513}
6514EXPORT_SYMBOL_GPL(devlink_reload_disable);
6515
bfcd3a46
JP		 6516/**
6517 * devlink_free - Free devlink instance resources
6518 *
6519 * @devlink: devlink
6520 */
6521void devlink_free(struct devlink *devlink)
6522{
b587bdaf 6523 mutex_destroy(&devlink->reporters_lock);
375cf8c6 6524 mutex_destroy(&devlink->lock);
0f420b6c
IS		 6525 WARN_ON(!list_empty(&devlink->trap_group_list));
6526 WARN_ON(!list_empty(&devlink->trap_list));
b904aada
PP		 6527 WARN_ON(!list_empty(&devlink->reporter_list));
6528 WARN_ON(!list_empty(&devlink->region_list));
6529 WARN_ON(!list_empty(&devlink->param_list));
6530 WARN_ON(!list_empty(&devlink->resource_list));
6531 WARN_ON(!list_empty(&devlink->dpipe_table_list));
6532 WARN_ON(!list_empty(&devlink->sb_list));
6533 WARN_ON(!list_empty(&devlink->port_list));
6534
bfcd3a46
JP		 6535 kfree(devlink);
6536}
6537EXPORT_SYMBOL_GPL(devlink_free);
6538
136bf27f
JP		 6539static void devlink_port_type_warn(struct work_struct *work)
6540{
6541 WARN(true, "Type was not set for devlink port.");
6542}
6543
6544static bool devlink_port_type_should_warn(struct devlink_port *devlink_port)
6545{
6546 /* Ignore CPU and DSA flavours. */
6547 return devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_CPU &&
6548 devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_DSA;
6549}
6550
4c582234 6551#define DEVLINK_PORT_TYPE_WARN_TIMEOUT (HZ * 3600)
136bf27f
JP		 6552
6553static void devlink_port_type_warn_schedule(struct devlink_port *devlink_port)
6554{
6555 if (!devlink_port_type_should_warn(devlink_port))
6556 return;
6557 /* Schedule a work to WARN in case driver does not set port
6558 * type within timeout.
6559 */
6560 schedule_delayed_work(&devlink_port->type_warn_dw,
6561 DEVLINK_PORT_TYPE_WARN_TIMEOUT);
6562}
6563
6564static void devlink_port_type_warn_cancel(struct devlink_port *devlink_port)
6565{
6566 if (!devlink_port_type_should_warn(devlink_port))
6567 return;
6568 cancel_delayed_work_sync(&devlink_port->type_warn_dw);
6569}
6570
bfcd3a46
JP		 6571/**
6572 * devlink_port_register - Register devlink port
6573 *
6574 * @devlink: devlink
6575 * @devlink_port: devlink port
eeaadd82 6576 * @port_index: driver-specific numerical identifier of the port
bfcd3a46
JP		 6577 *
6578 * Register devlink port with provided port index. User can use
6579 * any indexing, even hw-related one. devlink_port structure
6580 * is convenient to be embedded inside user driver private structure.
6581 * Note that the caller should take care of zeroing the devlink_port
6582 * structure.
6583 */
6584int devlink_port_register(struct devlink *devlink,
6585 struct devlink_port *devlink_port,
6586 unsigned int port_index)
6587{
2406e7e5 6588 mutex_lock(&devlink->lock);
bfcd3a46 6589 if (devlink_port_index_exists(devlink, port_index)) {
2406e7e5 6590 mutex_unlock(&devlink->lock);
bfcd3a46
JP		 6591 return -EEXIST;
6592 }
6593 devlink_port->devlink = devlink;
6594 devlink_port->index = port_index;
bfcd3a46 6595 devlink_port->registered = true;
b8f97554 6596 spin_lock_init(&devlink_port->type_lock);
bfcd3a46 6597 list_add_tail(&devlink_port->list, &devlink->port_list);
39e6160e 6598 INIT_LIST_HEAD(&devlink_port->param_list);
2406e7e5 6599 mutex_unlock(&devlink->lock);
136bf27f
JP		 6600 INIT_DELAYED_WORK(&devlink_port->type_warn_dw, &devlink_port_type_warn);
6601 devlink_port_type_warn_schedule(devlink_port);
bfcd3a46
JP		 6602 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
6603 return 0;
6604}
6605EXPORT_SYMBOL_GPL(devlink_port_register);
6606
6607/**
6608 * devlink_port_unregister - Unregister devlink port
6609 *
6610 * @devlink_port: devlink port
6611 */
6612void devlink_port_unregister(struct devlink_port *devlink_port)
6613{
2406e7e5
AS		 6614 struct devlink *devlink = devlink_port->devlink;
6615
136bf27f 6616 devlink_port_type_warn_cancel(devlink_port);
bfcd3a46 6617 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
2406e7e5 6618 mutex_lock(&devlink->lock);
bfcd3a46 6619 list_del(&devlink_port->list);
2406e7e5 6620 mutex_unlock(&devlink->lock);
bfcd3a46
JP		 6621}
6622EXPORT_SYMBOL_GPL(devlink_port_unregister);
6623
6624static void __devlink_port_type_set(struct devlink_port *devlink_port,
6625 enum devlink_port_type type,
6626 void *type_dev)
6627{
2b239e70
JP		 6628 if (WARN_ON(!devlink_port->registered))
6629 return;
136bf27f 6630 devlink_port_type_warn_cancel(devlink_port);
0f420b6c 6631 spin_lock_bh(&devlink_port->type_lock);
bfcd3a46
JP		 6632 devlink_port->type = type;
6633 devlink_port->type_dev = type_dev;
0f420b6c 6634 spin_unlock_bh(&devlink_port->type_lock);
bfcd3a46
JP		 6635 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
6636}
6637
6638/**
6639 * devlink_port_type_eth_set - Set port type to Ethernet
6640 *
6641 * @devlink_port: devlink port
6642 * @netdev: related netdevice
6643 */
6644void devlink_port_type_eth_set(struct devlink_port *devlink_port,
6645 struct net_device *netdev)
6646{
119c0b57
JP		 6647 const struct net_device_ops *ops = netdev->netdev_ops;
6648
746364f2
JP		 6649 /* If driver registers devlink port, it should set devlink port
6650 * attributes accordingly so the compat functions are called
6651 * and the original ops are not used.
6652 */
119c0b57 6653 if (ops->ndo_get_phys_port_name) {
746364f2
JP		 6654 /* Some drivers use the same set of ndos for netdevs
6655 * that have devlink_port registered and also for
6656 * those who don't. Make sure that ndo_get_phys_port_name
6657 * returns -EOPNOTSUPP here in case it is defined.
6658 * Warn if not.
6659 */
746364f2
JP		 6660 char name[IFNAMSIZ];
6661 int err;
6662
6663 err = ops->ndo_get_phys_port_name(netdev, name, sizeof(name));
6664 WARN_ON(err != -EOPNOTSUPP);
6665 }
119c0b57
JP		 6666 if (ops->ndo_get_port_parent_id) {
6667 /* Some drivers use the same set of ndos for netdevs
6668 * that have devlink_port registered and also for
6669 * those who don't. Make sure that ndo_get_port_parent_id
6670 * returns -EOPNOTSUPP here in case it is defined.
6671 * Warn if not.
6672 */
6673 struct netdev_phys_item_id ppid;
6674 int err;
6675
6676 err = ops->ndo_get_port_parent_id(netdev, &ppid);
6677 WARN_ON(err != -EOPNOTSUPP);
6678 }
773b1f38 6679 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH, netdev);
bfcd3a46
JP		 6680}
6681EXPORT_SYMBOL_GPL(devlink_port_type_eth_set);
6682
6683/**
6684 * devlink_port_type_ib_set - Set port type to InfiniBand
6685 *
6686 * @devlink_port: devlink port
6687 * @ibdev: related IB device
6688 */
6689void devlink_port_type_ib_set(struct devlink_port *devlink_port,
6690 struct ib_device *ibdev)
6691{
773b1f38 6692 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_IB, ibdev);
bfcd3a46
JP		 6693}
6694EXPORT_SYMBOL_GPL(devlink_port_type_ib_set);
6695
6696/**
6697 * devlink_port_type_clear - Clear port type
6698 *
6699 * @devlink_port: devlink port
6700 */
6701void devlink_port_type_clear(struct devlink_port *devlink_port)
6702{
773b1f38 6703 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET, NULL);
136bf27f 6704 devlink_port_type_warn_schedule(devlink_port);
bfcd3a46
JP		 6705}
6706EXPORT_SYMBOL_GPL(devlink_port_type_clear);
6707
378ef01b
PP		 6708static int __devlink_port_attrs_set(struct devlink_port *devlink_port,
6709 enum devlink_port_flavour flavour,
6710 const unsigned char *switch_id,
6711 unsigned char switch_id_len)
6712{
6713 struct devlink_port_attrs *attrs = &devlink_port->attrs;
6714
6715 if (WARN_ON(devlink_port->registered))
6716 return -EEXIST;
6717 attrs->set = true;
6718 attrs->flavour = flavour;
6719 if (switch_id) {
6720 attrs->switch_port = true;
6721 if (WARN_ON(switch_id_len > MAX_PHYS_ITEM_ID_LEN))
6722 switch_id_len = MAX_PHYS_ITEM_ID_LEN;
6723 memcpy(attrs->switch_id.id, switch_id, switch_id_len);
6724 attrs->switch_id.id_len = switch_id_len;
6725 } else {
6726 attrs->switch_port = false;
6727 }
6728 return 0;
6729}
6730
bfcd3a46 6731/**
b9ffcbaf 6732 * devlink_port_attrs_set - Set port attributes
bfcd3a46
JP		 6733 *
6734 * @devlink_port: devlink port
5ec1380a 6735 * @flavour: flavour of the port
b9ffcbaf
JP		 6736 * @port_number: number of the port that is facing user, for example
6737 * the front panel port number
6738 * @split: indicates if this is split port
6739 * @split_subport_number: if the port is split, this is the number
6740 * of subport.
bec5267c
JP		 6741 * @switch_id: if the port is part of switch, this is buffer with ID,
6742 * otwerwise this is NULL
6743 * @switch_id_len: length of the switch_id buffer
bfcd3a46 6744 */
b9ffcbaf 6745void devlink_port_attrs_set(struct devlink_port *devlink_port,
5ec1380a 6746 enum devlink_port_flavour flavour,
b9ffcbaf 6747 u32 port_number, bool split,
bec5267c
JP		 6748 u32 split_subport_number,
6749 const unsigned char *switch_id,
6750 unsigned char switch_id_len)
bfcd3a46 6751{
b9ffcbaf 6752 struct devlink_port_attrs *attrs = &devlink_port->attrs;
378ef01b 6753 int ret;
b9ffcbaf 6754
378ef01b
PP		 6755 ret = __devlink_port_attrs_set(devlink_port, flavour,
6756 switch_id, switch_id_len);
6757 if (ret)
45b86112 6758 return;
b9ffcbaf 6759 attrs->split = split;
378ef01b
PP		 6760 attrs->phys.port_number = port_number;
6761 attrs->phys.split_subport_number = split_subport_number;
bfcd3a46 6762}
b9ffcbaf 6763EXPORT_SYMBOL_GPL(devlink_port_attrs_set);
bfcd3a46 6764
98fd2d65
PP		 6765/**
6766 * devlink_port_attrs_pci_pf_set - Set PCI PF port attributes
6767 *
6768 * @devlink_port: devlink port
6769 * @pf: associated PF for the devlink port instance
6770 * @switch_id: if the port is part of switch, this is buffer with ID,
6771 * otherwise this is NULL
6772 * @switch_id_len: length of the switch_id buffer
6773 */
6774void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port,
6775 const unsigned char *switch_id,
6776 unsigned char switch_id_len, u16 pf)
6777{
6778 struct devlink_port_attrs *attrs = &devlink_port->attrs;
6779 int ret;
6780
6781 ret = __devlink_port_attrs_set(devlink_port,
6782 DEVLINK_PORT_FLAVOUR_PCI_PF,
6783 switch_id, switch_id_len);
6784 if (ret)
6785 return;
6786
6787 attrs->pci_pf.pf = pf;
6788}
6789EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_pf_set);
6790
e41b6bf3
PP		 6791/**
6792 * devlink_port_attrs_pci_vf_set - Set PCI VF port attributes
6793 *
6794 * @devlink_port: devlink port
6795 * @pf: associated PF for the devlink port instance
6796 * @vf: associated VF of a PF for the devlink port instance
6797 * @switch_id: if the port is part of switch, this is buffer with ID,
6798 * otherwise this is NULL
6799 * @switch_id_len: length of the switch_id buffer
6800 */
6801void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port,
6802 const unsigned char *switch_id,
6803 unsigned char switch_id_len,
6804 u16 pf, u16 vf)
6805{
6806 struct devlink_port_attrs *attrs = &devlink_port->attrs;
6807 int ret;
6808
6809 ret = __devlink_port_attrs_set(devlink_port,
6810 DEVLINK_PORT_FLAVOUR_PCI_VF,
6811 switch_id, switch_id_len);
6812 if (ret)
6813 return;
6814 attrs->pci_vf.pf = pf;
6815 attrs->pci_vf.vf = vf;
6816}
6817EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_vf_set);
6818
af3836df
JP		 6819static int __devlink_port_phys_port_name_get(struct devlink_port *devlink_port,
6820 char *name, size_t len)
08474c1a
JP		 6821{
6822 struct devlink_port_attrs *attrs = &devlink_port->attrs;
6823 int n = 0;
6824
6825 if (!attrs->set)
6826 return -EOPNOTSUPP;
6827
6828 switch (attrs->flavour) {
6829 case DEVLINK_PORT_FLAVOUR_PHYSICAL:
acf1ee44 6830 case DEVLINK_PORT_FLAVOUR_VIRTUAL:
08474c1a 6831 if (!attrs->split)
378ef01b 6832 n = snprintf(name, len, "p%u", attrs->phys.port_number);
08474c1a 6833 else
378ef01b
PP		 6834 n = snprintf(name, len, "p%us%u",
6835 attrs->phys.port_number,
6836 attrs->phys.split_subport_number);
08474c1a
JP		 6837 break;
6838 case DEVLINK_PORT_FLAVOUR_CPU:
6839 case DEVLINK_PORT_FLAVOUR_DSA:
6840 /* As CPU and DSA ports do not have a netdevice associated
6841 * case should not ever happen.
6842 */
6843 WARN_ON(1);
6844 return -EINVAL;
98fd2d65
PP		 6845 case DEVLINK_PORT_FLAVOUR_PCI_PF:
6846 n = snprintf(name, len, "pf%u", attrs->pci_pf.pf);
6847 break;
e41b6bf3
PP		 6848 case DEVLINK_PORT_FLAVOUR_PCI_VF:
6849 n = snprintf(name, len, "pf%uvf%u",
6850 attrs->pci_vf.pf, attrs->pci_vf.vf);
6851 break;
08474c1a
JP		 6852 }
6853
6854 if (n >= len)
6855 return -EINVAL;
6856
6857 return 0;
6858}
af3836df 6859
bf797471
JP		 6860int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
6861 u32 size, u16 ingress_pools_count,
6862 u16 egress_pools_count, u16 ingress_tc_count,
6863 u16 egress_tc_count)
6864{
6865 struct devlink_sb *devlink_sb;
6866 int err = 0;
6867
2406e7e5 6868 mutex_lock(&devlink->lock);
bf797471
JP		 6869 if (devlink_sb_index_exists(devlink, sb_index)) {
6870 err = -EEXIST;
6871 goto unlock;
6872 }
6873
6874 devlink_sb = kzalloc(sizeof(*devlink_sb), GFP_KERNEL);
6875 if (!devlink_sb) {
6876 err = -ENOMEM;
6877 goto unlock;
6878 }
6879 devlink_sb->index = sb_index;
6880 devlink_sb->size = size;
6881 devlink_sb->ingress_pools_count = ingress_pools_count;
6882 devlink_sb->egress_pools_count = egress_pools_count;
6883 devlink_sb->ingress_tc_count = ingress_tc_count;
6884 devlink_sb->egress_tc_count = egress_tc_count;
6885 list_add_tail(&devlink_sb->list, &devlink->sb_list);
6886unlock:
2406e7e5 6887 mutex_unlock(&devlink->lock);
bf797471
JP		 6888 return err;
6889}
6890EXPORT_SYMBOL_GPL(devlink_sb_register);
6891
6892void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index)
6893{
6894 struct devlink_sb *devlink_sb;
6895
2406e7e5 6896 mutex_lock(&devlink->lock);
bf797471
JP		 6897 devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
6898 WARN_ON(!devlink_sb);
6899 list_del(&devlink_sb->list);
2406e7e5 6900 mutex_unlock(&devlink->lock);
bf797471
JP		 6901 kfree(devlink_sb);
6902}
6903EXPORT_SYMBOL_GPL(devlink_sb_unregister);
6904
1555d204
AS		 6905/**
6906 * devlink_dpipe_headers_register - register dpipe headers
6907 *
6908 * @devlink: devlink
6909 * @dpipe_headers: dpipe header array
6910 *
6911 * Register the headers supported by hardware.
6912 */
6913int devlink_dpipe_headers_register(struct devlink *devlink,
6914 struct devlink_dpipe_headers *dpipe_headers)
6915{
2406e7e5 6916 mutex_lock(&devlink->lock);
1555d204 6917 devlink->dpipe_headers = dpipe_headers;
2406e7e5 6918 mutex_unlock(&devlink->lock);
1555d204
AS		 6919 return 0;
6920}
6921EXPORT_SYMBOL_GPL(devlink_dpipe_headers_register);
6922
6923/**
6924 * devlink_dpipe_headers_unregister - unregister dpipe headers
6925 *
6926 * @devlink: devlink
6927 *
6928 * Unregister the headers supported by hardware.
6929 */
6930void devlink_dpipe_headers_unregister(struct devlink *devlink)
6931{
2406e7e5 6932 mutex_lock(&devlink->lock);
1555d204 6933 devlink->dpipe_headers = NULL;
2406e7e5 6934 mutex_unlock(&devlink->lock);
1555d204
AS		 6935}
6936EXPORT_SYMBOL_GPL(devlink_dpipe_headers_unregister);
6937
6938/**
6939 * devlink_dpipe_table_counter_enabled - check if counter allocation
6940 * required
6941 * @devlink: devlink
6942 * @table_name: tables name
6943 *
6944 * Used by driver to check if counter allocation is required.
6945 * After counter allocation is turned on the table entries
6946 * are updated to include counter statistics.
6947 *
6948 * After that point on the driver must respect the counter
6949 * state so that each entry added to the table is added
6950 * with a counter.
6951 */
6952bool devlink_dpipe_table_counter_enabled(struct devlink *devlink,
6953 const char *table_name)
6954{
6955 struct devlink_dpipe_table *table;
6956 bool enabled;
6957
6958 rcu_read_lock();
6959 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2eb51c75 6960 table_name, devlink);
1555d204
AS		 6961 enabled = false;
6962 if (table)
6963 enabled = table->counters_enabled;
6964 rcu_read_unlock();
6965 return enabled;
6966}
6967EXPORT_SYMBOL_GPL(devlink_dpipe_table_counter_enabled);
6968
6969/**
6970 * devlink_dpipe_table_register - register dpipe table
6971 *
6972 * @devlink: devlink
6973 * @table_name: table name
6974 * @table_ops: table ops
6975 * @priv: priv
1555d204
AS		 6976 * @counter_control_extern: external control for counters
6977 */
6978int devlink_dpipe_table_register(struct devlink *devlink,
6979 const char *table_name,
6980 struct devlink_dpipe_table_ops *table_ops,
ffd3cdcc 6981 void *priv, bool counter_control_extern)
1555d204
AS		 6982{
6983 struct devlink_dpipe_table *table;
6132c1d9 6984 int err = 0;
1555d204 6985
ffd3cdcc
AS		 6986 if (WARN_ON(!table_ops->size_get))
6987 return -EINVAL;
6988
6132c1d9
MB		 6989 mutex_lock(&devlink->lock);
6990
2eb51c75
MB		 6991 if (devlink_dpipe_table_find(&devlink->dpipe_table_list, table_name,
6992 devlink)) {
6132c1d9
MB		 6993 err = -EEXIST;
6994 goto unlock;
6995 }
6996
1555d204 6997 table = kzalloc(sizeof(*table), GFP_KERNEL);
6132c1d9
MB		 6998 if (!table) {
6999 err = -ENOMEM;
7000 goto unlock;
7001 }
1555d204
AS		 7002
7003 table->name = table_name;
7004 table->table_ops = table_ops;
7005 table->priv = priv;
1555d204
AS		 7006 table->counter_control_extern = counter_control_extern;
7007
1555d204 7008 list_add_tail_rcu(&table->list, &devlink->dpipe_table_list);
6132c1d9 7009unlock:
2406e7e5 7010 mutex_unlock(&devlink->lock);
6132c1d9 7011 return err;
1555d204
AS		 7012}
7013EXPORT_SYMBOL_GPL(devlink_dpipe_table_register);
7014
7015/**
7016 * devlink_dpipe_table_unregister - unregister dpipe table
7017 *
7018 * @devlink: devlink
7019 * @table_name: table name
7020 */
7021void devlink_dpipe_table_unregister(struct devlink *devlink,
7022 const char *table_name)
7023{
7024 struct devlink_dpipe_table *table;
7025
2406e7e5 7026 mutex_lock(&devlink->lock);
1555d204 7027 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2eb51c75 7028 table_name, devlink);
1555d204
AS		 7029 if (!table)
7030 goto unlock;
7031 list_del_rcu(&table->list);
2406e7e5 7032 mutex_unlock(&devlink->lock);
1555d204
AS		 7033 kfree_rcu(table, rcu);
7034 return;
7035unlock:
2406e7e5 7036 mutex_unlock(&devlink->lock);
1555d204
AS		 7037}
7038EXPORT_SYMBOL_GPL(devlink_dpipe_table_unregister);
7039
d9f9b9a4
AS		 7040/**
7041 * devlink_resource_register - devlink resource register
7042 *
7043 * @devlink: devlink
7044 * @resource_name: resource's name
d9f9b9a4
AS		 7045 * @resource_size: resource's size
7046 * @resource_id: resource's id
eeaadd82
JK		 7047 * @parent_resource_id: resource's parent id
7048 * @size_params: size parameters
d9f9b9a4
AS		 7049 */
7050int devlink_resource_register(struct devlink *devlink,
7051 const char *resource_name,
d9f9b9a4
AS		 7052 u64 resource_size,
7053 u64 resource_id,
7054 u64 parent_resource_id,
fc56be47 7055 const struct devlink_resource_size_params *size_params)
d9f9b9a4
AS		 7056{
7057 struct devlink_resource *resource;
7058 struct list_head *resource_list;
14530746 7059 bool top_hierarchy;
d9f9b9a4
AS		 7060 int err = 0;
7061
14530746
DA		 7062 top_hierarchy = parent_resource_id == DEVLINK_RESOURCE_ID_PARENT_TOP;
7063
d9f9b9a4
AS		 7064 mutex_lock(&devlink->lock);
7065 resource = devlink_resource_find(devlink, NULL, resource_id);
7066 if (resource) {
7067 err = -EINVAL;
7068 goto out;
7069 }
7070
7071 resource = kzalloc(sizeof(*resource), GFP_KERNEL);
7072 if (!resource) {
7073 err = -ENOMEM;
7074 goto out;
7075 }
7076
7077 if (top_hierarchy) {
7078 resource_list = &devlink->resource_list;
7079 } else {
7080 struct devlink_resource *parent_resource;
7081
7082 parent_resource = devlink_resource_find(devlink, NULL,
7083 parent_resource_id);
7084 if (parent_resource) {
7085 resource_list = &parent_resource->resource_list;
7086 resource->parent = parent_resource;
7087 } else {
b75703de 7088 kfree(resource);
d9f9b9a4
AS		 7089 err = -EINVAL;
7090 goto out;
7091 }
7092 }
7093
7094 resource->name = resource_name;
7095 resource->size = resource_size;
7096 resource->size_new = resource_size;
7097 resource->id = resource_id;
d9f9b9a4 7098 resource->size_valid = true;
77d27096
JP		 7099 memcpy(&resource->size_params, size_params,
7100 sizeof(resource->size_params));
d9f9b9a4
AS		 7101 INIT_LIST_HEAD(&resource->resource_list);
7102 list_add_tail(&resource->list, resource_list);
7103out:
7104 mutex_unlock(&devlink->lock);
7105 return err;
7106}
7107EXPORT_SYMBOL_GPL(devlink_resource_register);
7108
7109/**
7110 * devlink_resources_unregister - free all resources
7111 *
7112 * @devlink: devlink
7113 * @resource: resource
7114 */
7115void devlink_resources_unregister(struct devlink *devlink,
7116 struct devlink_resource *resource)
7117{
7118 struct devlink_resource *tmp, *child_resource;
7119 struct list_head *resource_list;
7120
7121 if (resource)
7122 resource_list = &resource->resource_list;
7123 else
7124 resource_list = &devlink->resource_list;
7125
7126 if (!resource)
7127 mutex_lock(&devlink->lock);
7128
7129 list_for_each_entry_safe(child_resource, tmp, resource_list, list) {
7130 devlink_resources_unregister(devlink, child_resource);
7131 list_del(&child_resource->list);
7132 kfree(child_resource);
7133 }
7134
7135 if (!resource)
7136 mutex_unlock(&devlink->lock);
7137}
7138EXPORT_SYMBOL_GPL(devlink_resources_unregister);
7139
7140/**
7141 * devlink_resource_size_get - get and update size
7142 *
7143 * @devlink: devlink
7144 * @resource_id: the requested resource id
7145 * @p_resource_size: ptr to update
7146 */
7147int devlink_resource_size_get(struct devlink *devlink,
7148 u64 resource_id,
7149 u64 *p_resource_size)
7150{
7151 struct devlink_resource *resource;
7152 int err = 0;
7153
7154 mutex_lock(&devlink->lock);
7155 resource = devlink_resource_find(devlink, NULL, resource_id);
7156 if (!resource) {
7157 err = -EINVAL;
7158 goto out;
7159 }
7160 *p_resource_size = resource->size_new;
7161 resource->size = resource->size_new;
7162out:
7163 mutex_unlock(&devlink->lock);
7164 return err;
7165}
7166EXPORT_SYMBOL_GPL(devlink_resource_size_get);
7167
56dc7cd0
AS		 7168/**
7169 * devlink_dpipe_table_resource_set - set the resource id
7170 *
7171 * @devlink: devlink
7172 * @table_name: table name
7173 * @resource_id: resource id
7174 * @resource_units: number of resource's units consumed per table's entry
7175 */
7176int devlink_dpipe_table_resource_set(struct devlink *devlink,
7177 const char *table_name, u64 resource_id,
7178 u64 resource_units)
7179{
7180 struct devlink_dpipe_table *table;
7181 int err = 0;
7182
7183 mutex_lock(&devlink->lock);
7184 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2eb51c75 7185 table_name, devlink);
56dc7cd0
AS		 7186 if (!table) {
7187 err = -EINVAL;
7188 goto out;
7189 }
7190 table->resource_id = resource_id;
7191 table->resource_units = resource_units;
7192 table->resource_valid = true;
7193out:
7194 mutex_unlock(&devlink->lock);
7195 return err;
7196}
7197EXPORT_SYMBOL_GPL(devlink_dpipe_table_resource_set);
7198
fc56be47
JP		 7199/**
7200 * devlink_resource_occ_get_register - register occupancy getter
7201 *
7202 * @devlink: devlink
7203 * @resource_id: resource id
7204 * @occ_get: occupancy getter callback
7205 * @occ_get_priv: occupancy getter callback priv
7206 */
7207void devlink_resource_occ_get_register(struct devlink *devlink,
7208 u64 resource_id,
7209 devlink_resource_occ_get_t *occ_get,
7210 void *occ_get_priv)
7211{
7212 struct devlink_resource *resource;
7213
7214 mutex_lock(&devlink->lock);
7215 resource = devlink_resource_find(devlink, NULL, resource_id);
7216 if (WARN_ON(!resource))
7217 goto out;
7218 WARN_ON(resource->occ_get);
7219
7220 resource->occ_get = occ_get;
7221 resource->occ_get_priv = occ_get_priv;
7222out:
7223 mutex_unlock(&devlink->lock);
7224}
7225EXPORT_SYMBOL_GPL(devlink_resource_occ_get_register);
7226
7227/**
7228 * devlink_resource_occ_get_unregister - unregister occupancy getter
7229 *
7230 * @devlink: devlink
7231 * @resource_id: resource id
7232 */
7233void devlink_resource_occ_get_unregister(struct devlink *devlink,
7234 u64 resource_id)
7235{
7236 struct devlink_resource *resource;
7237
7238 mutex_lock(&devlink->lock);
7239 resource = devlink_resource_find(devlink, NULL, resource_id);
7240 if (WARN_ON(!resource))
7241 goto out;
7242 WARN_ON(!resource->occ_get);
7243
7244 resource->occ_get = NULL;
7245 resource->occ_get_priv = NULL;
7246out:
7247 mutex_unlock(&devlink->lock);
7248}
7249EXPORT_SYMBOL_GPL(devlink_resource_occ_get_unregister);
7250
39e6160e
VV		 7251static int devlink_param_verify(const struct devlink_param *param)
7252{
7253 if (!param || !param->name || !param->supported_cmodes)
7254 return -EINVAL;
7255 if (param->generic)
7256 return devlink_param_generic_verify(param);
7257 else
7258 return devlink_param_driver_verify(param);
7259}
7260
7261static int __devlink_params_register(struct devlink *devlink,
c1e5786d 7262 unsigned int port_index,
39e6160e
VV		 7263 struct list_head *param_list,
7264 const struct devlink_param *params,
c1e5786d
VV		 7265 size_t params_count,
7266 enum devlink_command reg_cmd,
7267 enum devlink_command unreg_cmd)
eabaef18
MS		 7268{
7269 const struct devlink_param *param = params;
7270 int i;
7271 int err;
7272
7273 mutex_lock(&devlink->lock);
7274 for (i = 0; i < params_count; i++, param++) {
39e6160e
VV		 7275 err = devlink_param_verify(param);
7276 if (err)
eabaef18 7277 goto rollback;
39e6160e 7278
c1e5786d
VV		 7279 err = devlink_param_register_one(devlink, port_index,
7280 param_list, param, reg_cmd);
eabaef18
MS		 7281 if (err)
7282 goto rollback;
7283 }
7284
7285 mutex_unlock(&devlink->lock);
7286 return 0;
7287
7288rollback:
7289 if (!i)
7290 goto unlock;
7291 for (param--; i > 0; i--, param--)
c1e5786d
VV		 7292 devlink_param_unregister_one(devlink, port_index, param_list,
7293 param, unreg_cmd);
eabaef18
MS		 7294unlock:
7295 mutex_unlock(&devlink->lock);
7296 return err;
7297}
39e6160e
VV		 7298
7299static void __devlink_params_unregister(struct devlink *devlink,
c1e5786d 7300 unsigned int port_index,
39e6160e
VV		 7301 struct list_head *param_list,
7302 const struct devlink_param *params,
c1e5786d
VV		 7303 size_t params_count,
7304 enum devlink_command cmd)
39e6160e
VV		 7305{
7306 const struct devlink_param *param = params;
7307 int i;
7308
7309 mutex_lock(&devlink->lock);
7310 for (i = 0; i < params_count; i++, param++)
c1e5786d
VV		 7311 devlink_param_unregister_one(devlink, 0, param_list, param,
7312 cmd);
39e6160e
VV		 7313 mutex_unlock(&devlink->lock);
7314}
7315
7316/**
7317 * devlink_params_register - register configuration parameters
7318 *
7319 * @devlink: devlink
7320 * @params: configuration parameters array
7321 * @params_count: number of parameters provided
7322 *
7323 * Register the configuration parameters supported by the driver.
7324 */
7325int devlink_params_register(struct devlink *devlink,
7326 const struct devlink_param *params,
7327 size_t params_count)
7328{
c1e5786d
VV		 7329 return __devlink_params_register(devlink, 0, &devlink->param_list,
7330 params, params_count,
7331 DEVLINK_CMD_PARAM_NEW,
7332 DEVLINK_CMD_PARAM_DEL);
39e6160e 7333}
eabaef18
MS		 7334EXPORT_SYMBOL_GPL(devlink_params_register);
7335
7336/**
7337 * devlink_params_unregister - unregister configuration parameters
7338 * @devlink: devlink
7339 * @params: configuration parameters to unregister
7340 * @params_count: number of parameters provided
7341 */
7342void devlink_params_unregister(struct devlink *devlink,
7343 const struct devlink_param *params,
7344 size_t params_count)
7345{
c1e5786d
VV		 7346 return __devlink_params_unregister(devlink, 0, &devlink->param_list,
7347 params, params_count,
7348 DEVLINK_CMD_PARAM_DEL);
eabaef18
MS		 7349}
7350EXPORT_SYMBOL_GPL(devlink_params_unregister);
7351
7c62cfb8
JP		 7352/**
7353 * devlink_params_publish - publish configuration parameters
7354 *
7355 * @devlink: devlink
7356 *
7357 * Publish previously registered configuration parameters.
7358 */
7359void devlink_params_publish(struct devlink *devlink)
7360{
7361 struct devlink_param_item *param_item;
7362
7363 list_for_each_entry(param_item, &devlink->param_list, list) {
7364 if (param_item->published)
7365 continue;
7366 param_item->published = true;
7367 devlink_param_notify(devlink, 0, param_item,
7368 DEVLINK_CMD_PARAM_NEW);
7369 }
7370}
7371EXPORT_SYMBOL_GPL(devlink_params_publish);
7372
7373/**
7374 * devlink_params_unpublish - unpublish configuration parameters
7375 *
7376 * @devlink: devlink
7377 *
7378 * Unpublish previously registered configuration parameters.
7379 */
7380void devlink_params_unpublish(struct devlink *devlink)
7381{
7382 struct devlink_param_item *param_item;
7383
7384 list_for_each_entry(param_item, &devlink->param_list, list) {
7385 if (!param_item->published)
7386 continue;
7387 param_item->published = false;
7388 devlink_param_notify(devlink, 0, param_item,
7389 DEVLINK_CMD_PARAM_DEL);
7390 }
7391}
7392EXPORT_SYMBOL_GPL(devlink_params_unpublish);
7393
39e6160e
VV		 7394/**
7395 * devlink_port_params_register - register port configuration parameters
7396 *
7397 * @devlink_port: devlink port
7398 * @params: configuration parameters array
7399 * @params_count: number of parameters provided
7400 *
7401 * Register the configuration parameters supported by the port.
7402 */
7403int devlink_port_params_register(struct devlink_port *devlink_port,
7404 const struct devlink_param *params,
7405 size_t params_count)
7406{
7407 return __devlink_params_register(devlink_port->devlink,
c1e5786d 7408 devlink_port->index,
39e6160e 7409 &devlink_port->param_list, params,
c1e5786d
VV		 7410 params_count,
7411 DEVLINK_CMD_PORT_PARAM_NEW,
7412 DEVLINK_CMD_PORT_PARAM_DEL);
39e6160e
VV		 7413}
7414EXPORT_SYMBOL_GPL(devlink_port_params_register);
7415
7416/**
7417 * devlink_port_params_unregister - unregister port configuration
7418 * parameters
7419 *
7420 * @devlink_port: devlink port
7421 * @params: configuration parameters array
7422 * @params_count: number of parameters provided
7423 */
7424void devlink_port_params_unregister(struct devlink_port *devlink_port,
7425 const struct devlink_param *params,
7426 size_t params_count)
7427{
7428 return __devlink_params_unregister(devlink_port->devlink,
c1e5786d 7429 devlink_port->index,
39e6160e 7430 &devlink_port->param_list,
c1e5786d
VV		 7431 params, params_count,
7432 DEVLINK_CMD_PORT_PARAM_DEL);
39e6160e
VV		 7433}
7434EXPORT_SYMBOL_GPL(devlink_port_params_unregister);
7435
ffd19b9a
VV		 7436static int
7437__devlink_param_driverinit_value_get(struct list_head *param_list, u32 param_id,
7438 union devlink_param_value *init_val)
ec01aeb1
MS		 7439{
7440 struct devlink_param_item *param_item;
7441
ffd19b9a 7442 param_item = devlink_param_find_by_id(param_list, param_id);
ec01aeb1
MS		 7443 if (!param_item)
7444 return -EINVAL;
7445
7446 if (!param_item->driverinit_value_valid ||
7447 !devlink_param_cmode_is_supported(param_item->param,
7448 DEVLINK_PARAM_CMODE_DRIVERINIT))
7449 return -EOPNOTSUPP;
7450
1276534c
MS		 7451 if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
7452 strcpy(init_val->vstr, param_item->driverinit_value.vstr);
7453 else
7454 *init_val = param_item->driverinit_value;
ec01aeb1
MS		 7455
7456 return 0;
7457}
ffd19b9a 7458
5473a7bd
VV		 7459static int
7460__devlink_param_driverinit_value_set(struct devlink *devlink,
c1e5786d 7461 unsigned int port_index,
5473a7bd
VV		 7462 struct list_head *param_list, u32 param_id,
7463 union devlink_param_value init_val,
7464 enum devlink_command cmd)
7465{
7466 struct devlink_param_item *param_item;
7467
7468 param_item = devlink_param_find_by_id(param_list, param_id);
7469 if (!param_item)
7470 return -EINVAL;
7471
7472 if (!devlink_param_cmode_is_supported(param_item->param,
7473 DEVLINK_PARAM_CMODE_DRIVERINIT))
7474 return -EOPNOTSUPP;
7475
7476 if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
7477 strcpy(param_item->driverinit_value.vstr, init_val.vstr);
7478 else
7479 param_item->driverinit_value = init_val;
7480 param_item->driverinit_value_valid = true;
7481
c1e5786d 7482 devlink_param_notify(devlink, port_index, param_item, cmd);
5473a7bd
VV		 7483 return 0;
7484}
7485
ffd19b9a
VV		 7486/**
7487 * devlink_param_driverinit_value_get - get configuration parameter
7488 * value for driver initializing
7489 *
7490 * @devlink: devlink
7491 * @param_id: parameter ID
7492 * @init_val: value of parameter in driverinit configuration mode
7493 *
7494 * This function should be used by the driver to get driverinit
7495 * configuration for initialization after reload command.
7496 */
7497int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
7498 union devlink_param_value *init_val)
7499{
97691069 7500 if (!devlink_reload_supported(devlink))
ffd19b9a
VV		 7501 return -EOPNOTSUPP;
7502
7503 return __devlink_param_driverinit_value_get(&devlink->param_list,
7504 param_id, init_val);
7505}
ec01aeb1
MS		 7506EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_get);
7507
7508/**
7509 * devlink_param_driverinit_value_set - set value of configuration
7510 * parameter for driverinit
7511 * configuration mode
7512 *
7513 * @devlink: devlink
7514 * @param_id: parameter ID
7515 * @init_val: value of parameter to set for driverinit configuration mode
7516 *
7517 * This function should be used by the driver to set driverinit
7518 * configuration mode default value.
7519 */
7520int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
7521 union devlink_param_value init_val)
7522{
c1e5786d 7523 return __devlink_param_driverinit_value_set(devlink, 0,
5473a7bd
VV		 7524 &devlink->param_list,
7525 param_id, init_val,
7526 DEVLINK_CMD_PARAM_NEW);
ec01aeb1
MS		 7527}
7528EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_set);
7529
ffd19b9a
VV		 7530/**
7531 * devlink_port_param_driverinit_value_get - get configuration parameter
7532 * value for driver initializing
7533 *
7534 * @devlink_port: devlink_port
7535 * @param_id: parameter ID
7536 * @init_val: value of parameter in driverinit configuration mode
7537 *
7538 * This function should be used by the driver to get driverinit
7539 * configuration for initialization after reload command.
7540 */
7541int devlink_port_param_driverinit_value_get(struct devlink_port *devlink_port,
7542 u32 param_id,
7543 union devlink_param_value *init_val)
7544{
7545 struct devlink *devlink = devlink_port->devlink;
7546
97691069 7547 if (!devlink_reload_supported(devlink))
ffd19b9a
VV		 7548 return -EOPNOTSUPP;
7549
7550 return __devlink_param_driverinit_value_get(&devlink_port->param_list,
7551 param_id, init_val);
7552}
7553EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_get);
7554
5473a7bd
VV		 7555/**
7556 * devlink_port_param_driverinit_value_set - set value of configuration
7557 * parameter for driverinit
7558 * configuration mode
7559 *
7560 * @devlink_port: devlink_port
7561 * @param_id: parameter ID
7562 * @init_val: value of parameter to set for driverinit configuration mode
7563 *
7564 * This function should be used by the driver to set driverinit
7565 * configuration mode default value.
7566 */
7567int devlink_port_param_driverinit_value_set(struct devlink_port *devlink_port,
7568 u32 param_id,
7569 union devlink_param_value init_val)
7570{
7571 return __devlink_param_driverinit_value_set(devlink_port->devlink,
c1e5786d 7572 devlink_port->index,
5473a7bd 7573 &devlink_port->param_list,
c1e5786d
VV		 7574 param_id, init_val,
7575 DEVLINK_CMD_PORT_PARAM_NEW);
5473a7bd
VV		 7576}
7577EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_set);
7578
ea601e17
MS		 7579/**
7580 * devlink_param_value_changed - notify devlink on a parameter's value
7581 * change. Should be called by the driver
7582 * right after the change.
7583 *
7584 * @devlink: devlink
7585 * @param_id: parameter ID
7586 *
7587 * This function should be used by the driver to notify devlink on value
7588 * change, excluding driverinit configuration mode.
7589 * For driverinit configuration mode driver should use the function
ea601e17
MS		 7590 */
7591void devlink_param_value_changed(struct devlink *devlink, u32 param_id)
7592{
7593 struct devlink_param_item *param_item;
7594
7595 param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
7596 WARN_ON(!param_item);
7597
c1e5786d 7598 devlink_param_notify(devlink, 0, param_item, DEVLINK_CMD_PARAM_NEW);
ea601e17
MS		 7599}
7600EXPORT_SYMBOL_GPL(devlink_param_value_changed);
7601
c1e5786d
VV		 7602/**
7603 * devlink_port_param_value_changed - notify devlink on a parameter's value
7604 * change. Should be called by the driver
7605 * right after the change.
7606 *
7607 * @devlink_port: devlink_port
7608 * @param_id: parameter ID
7609 *
7610 * This function should be used by the driver to notify devlink on value
7611 * change, excluding driverinit configuration mode.
7612 * For driverinit configuration mode driver should use the function
7613 * devlink_port_param_driverinit_value_set() instead.
7614 */
7615void devlink_port_param_value_changed(struct devlink_port *devlink_port,
7616 u32 param_id)
7617{
7618 struct devlink_param_item *param_item;
7619
7620 param_item = devlink_param_find_by_id(&devlink_port->param_list,
7621 param_id);
7622 WARN_ON(!param_item);
7623
7624 devlink_param_notify(devlink_port->devlink, devlink_port->index,
7625 param_item, DEVLINK_CMD_PORT_PARAM_NEW);
7626}
7627EXPORT_SYMBOL_GPL(devlink_port_param_value_changed);
7628
bde74ad1
MS		 7629/**
7630 * devlink_param_value_str_fill - Safely fill-up the string preventing
7631 * from overflow of the preallocated buffer
7632 *
7633 * @dst_val: destination devlink_param_value
7634 * @src: source buffer
7635 */
7636void devlink_param_value_str_fill(union devlink_param_value *dst_val,
7637 const char *src)
7638{
7639 size_t len;
7640
7641 len = strlcpy(dst_val->vstr, src, __DEVLINK_PARAM_MAX_STRING_VALUE);
7642 WARN_ON(len >= __DEVLINK_PARAM_MAX_STRING_VALUE);
7643}
7644EXPORT_SYMBOL_GPL(devlink_param_value_str_fill);
7645
b16ebe92
AV		 7646/**
7647 * devlink_region_create - create a new address region
7648 *
7649 * @devlink: devlink
e8937681 7650 * @ops: region operations and name
b16ebe92
AV		 7651 * @region_max_snapshots: Maximum supported number of snapshots for region
7652 * @region_size: size of region
7653 */
e8937681
JK		 7654struct devlink_region *
7655devlink_region_create(struct devlink *devlink,
7656 const struct devlink_region_ops *ops,
7657 u32 region_max_snapshots, u64 region_size)
b16ebe92
AV		 7658{
7659 struct devlink_region *region;
7660 int err = 0;
7661
a0a09f6b
JK		 7662 if (WARN_ON(!ops) || WARN_ON(!ops->destructor))
7663 return ERR_PTR(-EINVAL);
7664
b16ebe92
AV		 7665 mutex_lock(&devlink->lock);
7666
e8937681 7667 if (devlink_region_get_by_name(devlink, ops->name)) {
b16ebe92
AV		 7668 err = -EEXIST;
7669 goto unlock;
7670 }
7671
7672 region = kzalloc(sizeof(*region), GFP_KERNEL);
7673 if (!region) {
7674 err = -ENOMEM;
7675 goto unlock;
7676 }
7677
7678 region->devlink = devlink;
7679 region->max_snapshots = region_max_snapshots;
e8937681 7680 region->ops = ops;
b16ebe92
AV		 7681 region->size = region_size;
7682 INIT_LIST_HEAD(&region->snapshot_list);
7683 list_add_tail(&region->list, &devlink->region_list);
866319bb 7684 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
b16ebe92
AV		 7685
7686 mutex_unlock(&devlink->lock);
7687 return region;
7688
7689unlock:
7690 mutex_unlock(&devlink->lock);
7691 return ERR_PTR(err);
7692}
7693EXPORT_SYMBOL_GPL(devlink_region_create);
7694
7695/**
7696 * devlink_region_destroy - destroy address region
7697 *
7698 * @region: devlink region to destroy
7699 */
7700void devlink_region_destroy(struct devlink_region *region)
7701{
7702 struct devlink *devlink = region->devlink;
d7e52722 7703 struct devlink_snapshot *snapshot, *ts;
b16ebe92
AV		 7704
7705 mutex_lock(&devlink->lock);
d7e52722
AV		 7706
7707 /* Free all snapshots of region */
7708 list_for_each_entry_safe(snapshot, ts, &region->snapshot_list, list)
92b49822 7709 devlink_region_snapshot_del(region, snapshot);
d7e52722 7710
b16ebe92 7711 list_del(&region->list);
866319bb
AV		 7712
7713 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL);
b16ebe92
AV		 7714 mutex_unlock(&devlink->lock);
7715 kfree(region);
7716}
7717EXPORT_SYMBOL_GPL(devlink_region_destroy);
7718
ccadfa44 7719/**
b0efcae5 7720 * devlink_region_snapshot_id_get - get snapshot ID
ccadfa44
AV		 7721 *
7722 * This callback should be called when adding a new snapshot,
7723 * Driver should use the same id for multiple snapshots taken
7724 * on multiple regions at the same time/by the same trigger.
7725 *
7726 * @devlink: devlink
7727 */
b0efcae5 7728u32 devlink_region_snapshot_id_get(struct devlink *devlink)
ccadfa44
AV		 7729{
7730 u32 id;
7731
7732 mutex_lock(&devlink->lock);
7733 id = ++devlink->snapshot_id;
7734 mutex_unlock(&devlink->lock);
7735
7736 return id;
7737}
b0efcae5 7738EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_get);
ccadfa44 7739
d7e52722
AV		 7740/**
7741 * devlink_region_snapshot_create - create a new snapshot
7742 * This will add a new snapshot of a region. The snapshot
7743 * will be stored on the region struct and can be accessed
7744 * from devlink. This is useful for future analyses of snapshots.
7745 * Multiple snapshots can be created on a region.
7746 * The @snapshot_id should be obtained using the getter function.
7747 *
eeaadd82 7748 * @region: devlink region of the snapshot
d7e52722
AV		 7749 * @data: snapshot data
7750 * @snapshot_id: snapshot id to be created
d7e52722 7751 */
3a5e5234 7752int devlink_region_snapshot_create(struct devlink_region *region,
a0a09f6b 7753 u8 *data, u32 snapshot_id)
d7e52722
AV		 7754{
7755 struct devlink *devlink = region->devlink;
7756 struct devlink_snapshot *snapshot;
7757 int err;
7758
7759 mutex_lock(&devlink->lock);
7760
7761 /* check if region can hold one more snapshot */
7762 if (region->cur_snapshots == region->max_snapshots) {
7763 err = -ENOMEM;
7764 goto unlock;
7765 }
7766
7767 if (devlink_region_snapshot_get_by_id(region, snapshot_id)) {
7768 err = -EEXIST;
7769 goto unlock;
7770 }
7771
7772 snapshot = kzalloc(sizeof(*snapshot), GFP_KERNEL);
7773 if (!snapshot) {
7774 err = -ENOMEM;
7775 goto unlock;
7776 }
7777
7778 snapshot->id = snapshot_id;
7779 snapshot->region = region;
7780 snapshot->data = data;
d7e52722
AV		 7781
7782 list_add_tail(&snapshot->list, &region->snapshot_list);
7783
7784 region->cur_snapshots++;
7785
866319bb 7786 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_NEW);
d7e52722
AV		 7787 mutex_unlock(&devlink->lock);
7788 return 0;
7789
7790unlock:
7791 mutex_unlock(&devlink->lock);
7792 return err;
7793}
7794EXPORT_SYMBOL_GPL(devlink_region_snapshot_create);
7795
0f420b6c
IS		 7796#define DEVLINK_TRAP(_id, _type) \
7797 { \
7798 .type = DEVLINK_TRAP_TYPE_##_type, \
7799 .id = DEVLINK_TRAP_GENERIC_ID_##_id, \
7800 .name = DEVLINK_TRAP_GENERIC_NAME_##_id, \
7801 }
7802
7803static const struct devlink_trap devlink_trap_generic[] = {
391203ab
IS		 7804 DEVLINK_TRAP(SMAC_MC, DROP),
7805 DEVLINK_TRAP(VLAN_TAG_MISMATCH, DROP),
7806 DEVLINK_TRAP(INGRESS_VLAN_FILTER, DROP),
7807 DEVLINK_TRAP(INGRESS_STP_FILTER, DROP),
7808 DEVLINK_TRAP(EMPTY_TX_LIST, DROP),
7809 DEVLINK_TRAP(PORT_LOOPBACK_FILTER, DROP),
7810 DEVLINK_TRAP(BLACKHOLE_ROUTE, DROP),
7811 DEVLINK_TRAP(TTL_ERROR, EXCEPTION),
7812 DEVLINK_TRAP(TAIL_DROP, DROP),
6896cc4d
AC		 7813 DEVLINK_TRAP(NON_IP_PACKET, DROP),
7814 DEVLINK_TRAP(UC_DIP_MC_DMAC, DROP),
7815 DEVLINK_TRAP(DIP_LB, DROP),
7816 DEVLINK_TRAP(SIP_MC, DROP),
7817 DEVLINK_TRAP(SIP_LB, DROP),
7818 DEVLINK_TRAP(CORRUPTED_IP_HDR, DROP),
7819 DEVLINK_TRAP(IPV4_SIP_BC, DROP),
7820 DEVLINK_TRAP(IPV6_MC_DIP_RESERVED_SCOPE, DROP),
7821 DEVLINK_TRAP(IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE, DROP),
3b063ae5
AC		 7822 DEVLINK_TRAP(MTU_ERROR, EXCEPTION),
7823 DEVLINK_TRAP(UNRESOLVED_NEIGH, EXCEPTION),
7824 DEVLINK_TRAP(RPF, EXCEPTION),
7825 DEVLINK_TRAP(REJECT_ROUTE, EXCEPTION),
7826 DEVLINK_TRAP(IPV4_LPM_UNICAST_MISS, EXCEPTION),
7827 DEVLINK_TRAP(IPV6_LPM_UNICAST_MISS, EXCEPTION),
95f0ead8 7828 DEVLINK_TRAP(NON_ROUTABLE, DROP),
13c056ec 7829 DEVLINK_TRAP(DECAP_ERROR, EXCEPTION),
c3cae491 7830 DEVLINK_TRAP(OVERLAY_SMAC_MC, DROP),
ecd942a0
JP		 7831 DEVLINK_TRAP(INGRESS_FLOW_ACTION_DROP, DROP),
7832 DEVLINK_TRAP(EGRESS_FLOW_ACTION_DROP, DROP),
0f420b6c
IS		 7833};
7834
7835#define DEVLINK_TRAP_GROUP(_id) \
7836 { \
7837 .id = DEVLINK_TRAP_GROUP_GENERIC_ID_##_id, \
7838 .name = DEVLINK_TRAP_GROUP_GENERIC_NAME_##_id, \
7839 }
7840
7841static const struct devlink_trap_group devlink_trap_group_generic[] = {
391203ab
IS		 7842 DEVLINK_TRAP_GROUP(L2_DROPS),
7843 DEVLINK_TRAP_GROUP(L3_DROPS),
7844 DEVLINK_TRAP_GROUP(BUFFER_DROPS),
13c056ec 7845 DEVLINK_TRAP_GROUP(TUNNEL_DROPS),
ecd942a0 7846 DEVLINK_TRAP_GROUP(ACL_DROPS),
0f420b6c
IS		 7847};
7848
7849static int devlink_trap_generic_verify(const struct devlink_trap *trap)
7850{
7851 if (trap->id > DEVLINK_TRAP_GENERIC_ID_MAX)
7852 return -EINVAL;
7853
7854 if (strcmp(trap->name, devlink_trap_generic[trap->id].name))
7855 return -EINVAL;
7856
7857 if (trap->type != devlink_trap_generic[trap->id].type)
7858 return -EINVAL;
7859
7860 return 0;
7861}
7862
7863static int devlink_trap_driver_verify(const struct devlink_trap *trap)
7864{
7865 int i;
7866
7867 if (trap->id <= DEVLINK_TRAP_GENERIC_ID_MAX)
7868 return -EINVAL;
7869
7870 for (i = 0; i < ARRAY_SIZE(devlink_trap_generic); i++) {
7871 if (!strcmp(trap->name, devlink_trap_generic[i].name))
7872 return -EEXIST;
7873 }
7874
7875 return 0;
7876}
7877
7878static int devlink_trap_verify(const struct devlink_trap *trap)
7879{
107f1678 7880 if (!trap || !trap->name)
0f420b6c
IS		 7881 return -EINVAL;
7882
7883 if (trap->generic)
7884 return devlink_trap_generic_verify(trap);
7885 else
7886 return devlink_trap_driver_verify(trap);
7887}
7888
7889static int
7890devlink_trap_group_generic_verify(const struct devlink_trap_group *group)
7891{
7892 if (group->id > DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
7893 return -EINVAL;
7894
7895 if (strcmp(group->name, devlink_trap_group_generic[group->id].name))
7896 return -EINVAL;
7897
7898 return 0;
7899}
7900
7901static int
7902devlink_trap_group_driver_verify(const struct devlink_trap_group *group)
7903{
7904 int i;
7905
7906 if (group->id <= DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
7907 return -EINVAL;
7908
7909 for (i = 0; i < ARRAY_SIZE(devlink_trap_group_generic); i++) {
7910 if (!strcmp(group->name, devlink_trap_group_generic[i].name))
7911 return -EEXIST;
7912 }
7913
7914 return 0;
7915}
7916
7917static int devlink_trap_group_verify(const struct devlink_trap_group *group)
7918{
7919 if (group->generic)
7920 return devlink_trap_group_generic_verify(group);
7921 else
7922 return devlink_trap_group_driver_verify(group);
7923}
7924
7925static void
7926devlink_trap_group_notify(struct devlink *devlink,
7927 const struct devlink_trap_group_item *group_item,
7928 enum devlink_command cmd)
7929{
7930 struct sk_buff *msg;
7931 int err;
7932
7933 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_GROUP_NEW &&
7934 cmd != DEVLINK_CMD_TRAP_GROUP_DEL);
7935
7936 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7937 if (!msg)
7938 return;
7939
7940 err = devlink_nl_trap_group_fill(msg, devlink, group_item, cmd, 0, 0,
7941 0);
7942 if (err) {
7943 nlmsg_free(msg);
7944 return;
7945 }
7946
7947 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
7948 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
7949}
7950
0f420b6c
IS		 7951static int
7952devlink_trap_item_group_link(struct devlink *devlink,
7953 struct devlink_trap_item *trap_item)
7954{
107f1678 7955 u16 group_id = trap_item->trap->init_group_id;
0f420b6c
IS		 7956 struct devlink_trap_group_item *group_item;
7957
107f1678 7958 group_item = devlink_trap_group_item_lookup_by_id(devlink, group_id);
a09b37fc
IS		 7959 if (WARN_ON_ONCE(!group_item))
7960 return -EINVAL;
0f420b6c
IS		 7961
7962 trap_item->group_item = group_item;
7963
7964 return 0;
7965}
7966
0f420b6c
IS		 7967static void devlink_trap_notify(struct devlink *devlink,
7968 const struct devlink_trap_item *trap_item,
7969 enum devlink_command cmd)
7970{
7971 struct sk_buff *msg;
7972 int err;
7973
7974 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_NEW &&
7975 cmd != DEVLINK_CMD_TRAP_DEL);
7976
7977 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7978 if (!msg)
7979 return;
7980
7981 err = devlink_nl_trap_fill(msg, devlink, trap_item, cmd, 0, 0, 0);
7982 if (err) {
7983 nlmsg_free(msg);
7984 return;
7985 }
7986
7987 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
7988 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
7989}
7990
7991static int
7992devlink_trap_register(struct devlink *devlink,
7993 const struct devlink_trap *trap, void *priv)
7994{
7995 struct devlink_trap_item *trap_item;
7996 int err;
7997
7998 if (devlink_trap_item_lookup(devlink, trap->name))
7999 return -EEXIST;
8000
8001 trap_item = kzalloc(sizeof(*trap_item), GFP_KERNEL);
8002 if (!trap_item)
8003 return -ENOMEM;
8004
8005 trap_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
8006 if (!trap_item->stats) {
8007 err = -ENOMEM;
8008 goto err_stats_alloc;
8009 }
8010
8011 trap_item->trap = trap;
8012 trap_item->action = trap->init_action;
8013 trap_item->priv = priv;
8014
8015 err = devlink_trap_item_group_link(devlink, trap_item);
8016 if (err)
8017 goto err_group_link;
8018
8019 err = devlink->ops->trap_init(devlink, trap, trap_item);
8020 if (err)
8021 goto err_trap_init;
8022
8023 list_add_tail(&trap_item->list, &devlink->trap_list);
8024 devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_NEW);
8025
8026 return 0;
8027
8028err_trap_init:
0f420b6c
IS		 8029err_group_link:
8030 free_percpu(trap_item->stats);
8031err_stats_alloc:
8032 kfree(trap_item);
8033 return err;
8034}
8035
8036static void devlink_trap_unregister(struct devlink *devlink,
8037 const struct devlink_trap *trap)
8038{
8039 struct devlink_trap_item *trap_item;
8040
8041 trap_item = devlink_trap_item_lookup(devlink, trap->name);
8042 if (WARN_ON_ONCE(!trap_item))
8043 return;
8044
8045 devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_DEL);
8046 list_del(&trap_item->list);
8047 if (devlink->ops->trap_fini)
8048 devlink->ops->trap_fini(devlink, trap, trap_item);
0f420b6c
IS		 8049 free_percpu(trap_item->stats);
8050 kfree(trap_item);
8051}
8052
8053static void devlink_trap_disable(struct devlink *devlink,
8054 const struct devlink_trap *trap)
8055{
8056 struct devlink_trap_item *trap_item;
8057
8058 trap_item = devlink_trap_item_lookup(devlink, trap->name);
8059 if (WARN_ON_ONCE(!trap_item))
8060 return;
8061
8062 devlink->ops->trap_action_set(devlink, trap, DEVLINK_TRAP_ACTION_DROP);
8063 trap_item->action = DEVLINK_TRAP_ACTION_DROP;
8064}
8065
8066/**
8067 * devlink_traps_register - Register packet traps with devlink.
8068 * @devlink: devlink.
8069 * @traps: Packet traps.
8070 * @traps_count: Count of provided packet traps.
8071 * @priv: Driver private information.
8072 *
8073 * Return: Non-zero value on failure.
8074 */
8075int devlink_traps_register(struct devlink *devlink,
8076 const struct devlink_trap *traps,
8077 size_t traps_count, void *priv)
8078{
8079 int i, err;
8080
8081 if (!devlink->ops->trap_init || !devlink->ops->trap_action_set)
8082 return -EINVAL;
8083
8084 mutex_lock(&devlink->lock);
8085 for (i = 0; i < traps_count; i++) {
8086 const struct devlink_trap *trap = &traps[i];
8087
8088 err = devlink_trap_verify(trap);
8089 if (err)
8090 goto err_trap_verify;
8091
8092 err = devlink_trap_register(devlink, trap, priv);
8093 if (err)
8094 goto err_trap_register;
8095 }
8096 mutex_unlock(&devlink->lock);
8097
8098 return 0;
8099
8100err_trap_register:
8101err_trap_verify:
8102 for (i--; i >= 0; i--)
8103 devlink_trap_unregister(devlink, &traps[i]);
8104 mutex_unlock(&devlink->lock);
8105 return err;
8106}
8107EXPORT_SYMBOL_GPL(devlink_traps_register);
8108
8109/**
8110 * devlink_traps_unregister - Unregister packet traps from devlink.
8111 * @devlink: devlink.
8112 * @traps: Packet traps.
8113 * @traps_count: Count of provided packet traps.
8114 */
8115void devlink_traps_unregister(struct devlink *devlink,
8116 const struct devlink_trap *traps,
8117 size_t traps_count)
8118{
8119 int i;
8120
8121 mutex_lock(&devlink->lock);
8122 /* Make sure we do not have any packets in-flight while unregistering
8123 * traps by disabling all of them and waiting for a grace period.
8124 */
8125 for (i = traps_count - 1; i >= 0; i--)
8126 devlink_trap_disable(devlink, &traps[i]);
8127 synchronize_rcu();
8128 for (i = traps_count - 1; i >= 0; i--)
8129 devlink_trap_unregister(devlink, &traps[i]);
8130 mutex_unlock(&devlink->lock);
8131}
8132EXPORT_SYMBOL_GPL(devlink_traps_unregister);
8133
8134static void
8135devlink_trap_stats_update(struct devlink_stats __percpu *trap_stats,
8136 size_t skb_len)
8137{
8138 struct devlink_stats *stats;
8139
8140 stats = this_cpu_ptr(trap_stats);
8141 u64_stats_update_begin(&stats->syncp);
8142 stats->rx_bytes += skb_len;
8143 stats->rx_packets++;
8144 u64_stats_update_end(&stats->syncp);
8145}
8146
8147static void
8148devlink_trap_report_metadata_fill(struct net_dm_hw_metadata *hw_metadata,
8149 const struct devlink_trap_item *trap_item,
5a2e106c
JP		 8150 struct devlink_port *in_devlink_port,
8151 const struct flow_action_cookie *fa_cookie)
0f420b6c
IS		 8152{
8153 struct devlink_trap_group_item *group_item = trap_item->group_item;
8154
8155 hw_metadata->trap_group_name = group_item->group->name;
8156 hw_metadata->trap_name = trap_item->trap->name;
5a2e106c 8157 hw_metadata->fa_cookie = fa_cookie;
0f420b6c
IS		 8158
8159 spin_lock(&in_devlink_port->type_lock);
8160 if (in_devlink_port->type == DEVLINK_PORT_TYPE_ETH)
8161 hw_metadata->input_dev = in_devlink_port->type_dev;
8162 spin_unlock(&in_devlink_port->type_lock);
8163}
8164
8165/**
8166 * devlink_trap_report - Report trapped packet to drop monitor.
8167 * @devlink: devlink.
8168 * @skb: Trapped packet.
8169 * @trap_ctx: Trap context.
8170 * @in_devlink_port: Input devlink port.
5a2e106c 8171 * @fa_cookie: Flow action cookie. Could be NULL.
0f420b6c
IS		 8172 */
8173void devlink_trap_report(struct devlink *devlink, struct sk_buff *skb,
5a2e106c
JP		 8174 void *trap_ctx, struct devlink_port *in_devlink_port,
8175 const struct flow_action_cookie *fa_cookie)
8176
0f420b6c
IS		 8177{
8178 struct devlink_trap_item *trap_item = trap_ctx;
8179 struct net_dm_hw_metadata hw_metadata = {};
8180
8181 devlink_trap_stats_update(trap_item->stats, skb->len);
8182 devlink_trap_stats_update(trap_item->group_item->stats, skb->len);
8183
8184 devlink_trap_report_metadata_fill(&hw_metadata, trap_item,
5a2e106c 8185 in_devlink_port, fa_cookie);
0f420b6c
IS		 8186 net_dm_hw_report(skb, &hw_metadata);
8187}
8188EXPORT_SYMBOL_GPL(devlink_trap_report);
8189
8190/**
8191 * devlink_trap_ctx_priv - Trap context to driver private information.
8192 * @trap_ctx: Trap context.
8193 *
8194 * Return: Driver private information passed during registration.
8195 */
8196void *devlink_trap_ctx_priv(void *trap_ctx)
8197{
8198 struct devlink_trap_item *trap_item = trap_ctx;
8199
8200 return trap_item->priv;
8201}
8202EXPORT_SYMBOL_GPL(devlink_trap_ctx_priv);
8203
95ad9555
IS		 8204static int
8205devlink_trap_group_register(struct devlink *devlink,
8206 const struct devlink_trap_group *group)
8207{
8208 struct devlink_trap_group_item *group_item;
8209 int err;
8210
8211 if (devlink_trap_group_item_lookup(devlink, group->name))
8212 return -EEXIST;
8213
8214 group_item = kzalloc(sizeof(*group_item), GFP_KERNEL);
8215 if (!group_item)
8216 return -ENOMEM;
8217
8218 group_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
8219 if (!group_item->stats) {
8220 err = -ENOMEM;
8221 goto err_stats_alloc;
8222 }
8223
8224 group_item->group = group;
95ad9555
IS		 8225
8226 if (devlink->ops->trap_group_init) {
8227 err = devlink->ops->trap_group_init(devlink, group);
8228 if (err)
8229 goto err_group_init;
8230 }
8231
8232 list_add_tail(&group_item->list, &devlink->trap_group_list);
8233 devlink_trap_group_notify(devlink, group_item,
8234 DEVLINK_CMD_TRAP_GROUP_NEW);
8235
8236 return 0;
8237
8238err_group_init:
8239 free_percpu(group_item->stats);
8240err_stats_alloc:
8241 kfree(group_item);
8242 return err;
8243}
8244
8245static void
8246devlink_trap_group_unregister(struct devlink *devlink,
8247 const struct devlink_trap_group *group)
8248{
8249 struct devlink_trap_group_item *group_item;
8250
8251 group_item = devlink_trap_group_item_lookup(devlink, group->name);
8252 if (WARN_ON_ONCE(!group_item))
8253 return;
8254
8255 devlink_trap_group_notify(devlink, group_item,
8256 DEVLINK_CMD_TRAP_GROUP_DEL);
8257 list_del(&group_item->list);
8258 free_percpu(group_item->stats);
8259 kfree(group_item);
8260}
8261
8262/**
8263 * devlink_trap_groups_register - Register packet trap groups with devlink.
8264 * @devlink: devlink.
8265 * @groups: Packet trap groups.
8266 * @groups_count: Count of provided packet trap groups.
8267 *
8268 * Return: Non-zero value on failure.
8269 */
8270int devlink_trap_groups_register(struct devlink *devlink,
8271 const struct devlink_trap_group *groups,
8272 size_t groups_count)
8273{
8274 int i, err;
8275
8276 mutex_lock(&devlink->lock);
8277 for (i = 0; i < groups_count; i++) {
8278 const struct devlink_trap_group *group = &groups[i];
8279
8280 err = devlink_trap_group_verify(group);
8281 if (err)
8282 goto err_trap_group_verify;
8283
8284 err = devlink_trap_group_register(devlink, group);
8285 if (err)
8286 goto err_trap_group_register;
8287 }
8288 mutex_unlock(&devlink->lock);
8289
8290 return 0;
8291
8292err_trap_group_register:
8293err_trap_group_verify:
8294 for (i--; i >= 0; i--)
8295 devlink_trap_group_unregister(devlink, &groups[i]);
8296 mutex_unlock(&devlink->lock);
8297 return err;
8298}
8299EXPORT_SYMBOL_GPL(devlink_trap_groups_register);
8300
8301/**
8302 * devlink_trap_groups_unregister - Unregister packet trap groups from devlink.
8303 * @devlink: devlink.
8304 * @groups: Packet trap groups.
8305 * @groups_count: Count of provided packet trap groups.
8306 */
8307void devlink_trap_groups_unregister(struct devlink *devlink,
8308 const struct devlink_trap_group *groups,
8309 size_t groups_count)
8310{
8311 int i;
8312
8313 mutex_lock(&devlink->lock);
8314 for (i = groups_count - 1; i >= 0; i--)
8315 devlink_trap_group_unregister(devlink, &groups[i]);
8316 mutex_unlock(&devlink->lock);
8317}
8318EXPORT_SYMBOL_GPL(devlink_trap_groups_unregister);
8319
ddb6e99e
JK		 8320static void __devlink_compat_running_version(struct devlink *devlink,
8321 char *buf, size_t len)
8322{
8323 const struct nlattr *nlattr;
8324 struct devlink_info_req req;
8325 struct sk_buff *msg;
8326 int rem, err;
8327
ddb6e99e
JK		 8328 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8329 if (!msg)
8330 return;
8331
8332 req.msg = msg;
8333 err = devlink->ops->info_get(devlink, &req, NULL);
8334 if (err)
8335 goto free_msg;
8336
8337 nla_for_each_attr(nlattr, (void *)msg->data, msg->len, rem) {
8338 const struct nlattr *kv;
8339 int rem_kv;
8340
8341 if (nla_type(nlattr) != DEVLINK_ATTR_INFO_VERSION_RUNNING)
8342 continue;
8343
8344 nla_for_each_nested(kv, nlattr, rem_kv) {
8345 if (nla_type(kv) != DEVLINK_ATTR_INFO_VERSION_VALUE)
8346 continue;
8347
8348 strlcat(buf, nla_data(kv), len);
8349 strlcat(buf, " ", len);
8350 }
8351 }
8352free_msg:
8353 nlmsg_free(msg);
8354}
8355
8356void devlink_compat_running_version(struct net_device *dev,
8357 char *buf, size_t len)
8358{
ddb6e99e
JK		 8359 struct devlink *devlink;
8360
1b45ff6c
JK		 8361 dev_hold(dev);
8362 rtnl_unlock();
8363
b473b0d2 8364 devlink = netdev_to_devlink(dev);
be6fe1d8 8365 if (!devlink || !devlink->ops->info_get)
e0dcd386 8366 goto out;
b473b0d2
JK		 8367
8368 mutex_lock(&devlink->lock);
8369 __devlink_compat_running_version(devlink, buf, len);
8370 mutex_unlock(&devlink->lock);
1b45ff6c 8371
e0dcd386 8372out:
1b45ff6c
JK		 8373 rtnl_lock();
8374 dev_put(dev);
ddb6e99e
JK		 8375}
8376
4eceba17
JK		 8377int devlink_compat_flash_update(struct net_device *dev, const char *file_name)
8378{
4eceba17 8379 struct devlink *devlink;
e0dcd386 8380 int ret;
4eceba17 8381
1b45ff6c
JK		 8382 dev_hold(dev);
8383 rtnl_unlock();
8384
b473b0d2 8385 devlink = netdev_to_devlink(dev);
e0dcd386
JP		 8386 if (!devlink || !devlink->ops->flash_update) {
8387 ret = -EOPNOTSUPP;
8388 goto out;
8389 }
4eceba17 8390
b473b0d2
JK		 8391 mutex_lock(&devlink->lock);
8392 ret = devlink->ops->flash_update(devlink, file_name, NULL, NULL);
8393 mutex_unlock(&devlink->lock);
1b45ff6c 8394
e0dcd386 8395out:
1b45ff6c
JK		 8396 rtnl_lock();
8397 dev_put(dev);
8398
b473b0d2 8399 return ret;
4eceba17
JK		 8400}
8401
af3836df
JP		 8402int devlink_compat_phys_port_name_get(struct net_device *dev,
8403 char *name, size_t len)
8404{
8405 struct devlink_port *devlink_port;
8406
8407 /* RTNL mutex is held here which ensures that devlink_port
8408 * instance cannot disappear in the middle. No need to take
8409 * any devlink lock as only permanent values are accessed.
8410 */
8411 ASSERT_RTNL();
8412
8413 devlink_port = netdev_to_devlink_port(dev);
8414 if (!devlink_port)
8415 return -EOPNOTSUPP;
8416
8417 return __devlink_port_phys_port_name_get(devlink_port, name, len);
8418}
8419
7e1146e8
JP		 8420int devlink_compat_switch_id_get(struct net_device *dev,
8421 struct netdev_phys_item_id *ppid)
8422{
8423 struct devlink_port *devlink_port;
8424
043b8413
VB		 8425 /* Caller must hold RTNL mutex or reference to dev, which ensures that
8426 * devlink_port instance cannot disappear in the middle. No need to take
7e1146e8
JP		 8427 * any devlink lock as only permanent values are accessed.
8428 */
7e1146e8
JP		 8429 devlink_port = netdev_to_devlink_port(dev);
8430 if (!devlink_port || !devlink_port->attrs.switch_port)
8431 return -EOPNOTSUPP;
8432
8433 memcpy(ppid, &devlink_port->attrs.switch_id, sizeof(*ppid));
8434
8435 return 0;
8436}
8437
070c63f2
JP		 8438static void __net_exit devlink_pernet_pre_exit(struct net *net)
8439{
8440 struct devlink *devlink;
8441 int err;
8442
8443 /* In case network namespace is getting destroyed, reload
8444 * all devlink instances from this namespace into init_net.
8445 */
8446 mutex_lock(&devlink_mutex);
8447 list_for_each_entry(devlink, &devlink_list, list) {
8448 if (net_eq(devlink_net(devlink), net)) {
8449 if (WARN_ON(!devlink_reload_supported(devlink)))
8450 continue;
8451 err = devlink_reload(devlink, &init_net, NULL);
a0c76345 8452 if (err && err != -EOPNOTSUPP)
070c63f2
JP		 8453 pr_warn("Failed to reload devlink instance into init_net\n");
8454 }
8455 }
8456 mutex_unlock(&devlink_mutex);
8457}
8458
8459static struct pernet_operations devlink_pernet_ops __net_initdata = {
8460 .pre_exit = devlink_pernet_pre_exit,
8461};
8462
f4b6bcc7 8463static int __init devlink_init(void)
bfcd3a46 8464{
070c63f2
JP		 8465 int err;
8466
8467 err = genl_register_family(&devlink_nl_family);
8468 if (err)
8469 goto out;
8470 err = register_pernet_subsys(&devlink_pernet_ops);
8471
8472out:
8473 WARN_ON(err);
8474 return err;
bfcd3a46
JP		 8475}
8476
f4b6bcc7 8477subsys_initcall(devlink_init);
Linux 6.x block layer and io_uring tree(s)