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net: fddi: skfp: Use print_hex_dump() helper
[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;
347 const char *name;
348 struct list_head snapshot_list;
349 u32 max_snapshots;
350 u32 cur_snapshots;
351 u64 size;
352};
353
d7e52722
AV		 354struct devlink_snapshot {
355 struct list_head list;
356 struct devlink_region *region;
357 devlink_snapshot_data_dest_t *data_destructor;
d7e52722
AV		 358 u8 *data;
359 u32 id;
360};
361
b16ebe92
AV		 362static struct devlink_region *
363devlink_region_get_by_name(struct devlink *devlink, const char *region_name)
364{
365 struct devlink_region *region;
366
367 list_for_each_entry(region, &devlink->region_list, list)
368 if (!strcmp(region->name, region_name))
369 return region;
370
371 return NULL;
372}
373
d7e52722
AV		 374static struct devlink_snapshot *
375devlink_region_snapshot_get_by_id(struct devlink_region *region, u32 id)
376{
377 struct devlink_snapshot *snapshot;
378
379 list_for_each_entry(snapshot, &region->snapshot_list, list)
380 if (snapshot->id == id)
381 return snapshot;
382
383 return NULL;
384}
385
1fc2257e
JP		 386#define DEVLINK_NL_FLAG_NEED_DEVLINK BIT(0)
387#define DEVLINK_NL_FLAG_NEED_PORT BIT(1)
bf797471 388#define DEVLINK_NL_FLAG_NEED_SB BIT(2)
2406e7e5
AS		 389
390/* The per devlink instance lock is taken by default in the pre-doit
391 * operation, yet several commands do not require this. The global
392 * devlink lock is taken and protects from disruption by user-calls.
393 */
394#define DEVLINK_NL_FLAG_NO_LOCK BIT(3)
bfcd3a46
JP		 395
396static int devlink_nl_pre_doit(const struct genl_ops *ops,
397 struct sk_buff *skb, struct genl_info *info)
398{
399 struct devlink *devlink;
2406e7e5 400 int err;
bfcd3a46
JP		 401
402 mutex_lock(&devlink_mutex);
403 devlink = devlink_get_from_info(info);
404 if (IS_ERR(devlink)) {
405 mutex_unlock(&devlink_mutex);
406 return PTR_ERR(devlink);
407 }
2406e7e5
AS		 408 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
409 mutex_lock(&devlink->lock);
1fc2257e
JP		 410 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_DEVLINK) {
411 info->user_ptr[0] = devlink;
412 } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT) {
bfcd3a46
JP		 413 struct devlink_port *devlink_port;
414
bfcd3a46
JP		 415 devlink_port = devlink_port_get_from_info(devlink, info);
416 if (IS_ERR(devlink_port)) {
2406e7e5
AS		 417 err = PTR_ERR(devlink_port);
418 goto unlock;
bfcd3a46 419 }
1fc2257e 420 info->user_ptr[0] = devlink_port;
bfcd3a46 421 }
bf797471
JP		 422 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_SB) {
423 struct devlink_sb *devlink_sb;
424
425 devlink_sb = devlink_sb_get_from_info(devlink, info);
426 if (IS_ERR(devlink_sb)) {
2406e7e5
AS		 427 err = PTR_ERR(devlink_sb);
428 goto unlock;
bf797471
JP		 429 }
430 info->user_ptr[1] = devlink_sb;
431 }
bfcd3a46 432 return 0;
2406e7e5
AS		 433
434unlock:
435 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
436 mutex_unlock(&devlink->lock);
437 mutex_unlock(&devlink_mutex);
438 return err;
bfcd3a46
JP		 439}
440
441static void devlink_nl_post_doit(const struct genl_ops *ops,
442 struct sk_buff *skb, struct genl_info *info)
443{
2406e7e5
AS		 444 struct devlink *devlink;
445
070c63f2
JP		 446 /* When devlink changes netns, it would not be found
447 * by devlink_get_from_info(). So try if it is stored first.
448 */
449 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_DEVLINK) {
450 devlink = info->user_ptr[0];
451 } else {
452 devlink = devlink_get_from_info(info);
453 WARN_ON(IS_ERR(devlink));
454 }
455 if (!IS_ERR(devlink) && ~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
2406e7e5 456 mutex_unlock(&devlink->lock);
bfcd3a46
JP		 457 mutex_unlock(&devlink_mutex);
458}
459
489111e5 460static struct genl_family devlink_nl_family;
bfcd3a46
JP		 461
462enum devlink_multicast_groups {
463 DEVLINK_MCGRP_CONFIG,
464};
465
466static const struct genl_multicast_group devlink_nl_mcgrps[] = {
467 [DEVLINK_MCGRP_CONFIG] = { .name = DEVLINK_GENL_MCGRP_CONFIG_NAME },
468};
469
470static int devlink_nl_put_handle(struct sk_buff *msg, struct devlink *devlink)
471{
472 if (nla_put_string(msg, DEVLINK_ATTR_BUS_NAME, devlink->dev->bus->name))
473 return -EMSGSIZE;
474 if (nla_put_string(msg, DEVLINK_ATTR_DEV_NAME, dev_name(devlink->dev)))
475 return -EMSGSIZE;
476 return 0;
477}
478
479static int devlink_nl_fill(struct sk_buff *msg, struct devlink *devlink,
480 enum devlink_command cmd, u32 portid,
481 u32 seq, int flags)
482{
483 void *hdr;
484
485 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
486 if (!hdr)
487 return -EMSGSIZE;
488
489 if (devlink_nl_put_handle(msg, devlink))
490 goto nla_put_failure;
2670ac26
JP		 491 if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_FAILED, devlink->reload_failed))
492 goto nla_put_failure;
bfcd3a46
JP		 493
494 genlmsg_end(msg, hdr);
495 return 0;
496
497nla_put_failure:
498 genlmsg_cancel(msg, hdr);
499 return -EMSGSIZE;
500}
501
502static void devlink_notify(struct devlink *devlink, enum devlink_command cmd)
503{
504 struct sk_buff *msg;
505 int err;
506
507 WARN_ON(cmd != DEVLINK_CMD_NEW && cmd != DEVLINK_CMD_DEL);
508
509 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
510 if (!msg)
511 return;
512
513 err = devlink_nl_fill(msg, devlink, cmd, 0, 0, 0);
514 if (err) {
515 nlmsg_free(msg);
516 return;
517 }
518
519 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
520 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
521}
522
b9ffcbaf
JP		 523static int devlink_nl_port_attrs_put(struct sk_buff *msg,
524 struct devlink_port *devlink_port)
525{
526 struct devlink_port_attrs *attrs = &devlink_port->attrs;
527
528 if (!attrs->set)
529 return 0;
5ec1380a
JP		 530 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_FLAVOUR, attrs->flavour))
531 return -EMSGSIZE;
58b6be41
PP		 532 switch (devlink_port->attrs.flavour) {
533 case DEVLINK_PORT_FLAVOUR_PCI_PF:
98fd2d65
PP		 534 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER,
535 attrs->pci_pf.pf))
536 return -EMSGSIZE;
58b6be41
PP		 537 break;
538 case DEVLINK_PORT_FLAVOUR_PCI_VF:
e41b6bf3
PP		 539 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER,
540 attrs->pci_vf.pf) ||
541 nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_VF_NUMBER,
542 attrs->pci_vf.vf))
543 return -EMSGSIZE;
58b6be41
PP		 544 break;
545 case DEVLINK_PORT_FLAVOUR_PHYSICAL:
546 case DEVLINK_PORT_FLAVOUR_CPU:
547 case DEVLINK_PORT_FLAVOUR_DSA:
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,
2106 const char *table_name)
2107{
2108 struct devlink_dpipe_table *table;
2109
2110 list_for_each_entry_rcu(table, dpipe_tables, list) {
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,
2229 table_name);
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,
2385 table_name);
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{
f355cfcd
MS		 3355 int len;
3356
e3b7ca18
MS		 3357 if (param->type != DEVLINK_PARAM_TYPE_BOOL &&
3358 !info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA])
3359 return -EINVAL;
3360
3361 switch (param->type) {
3362 case DEVLINK_PARAM_TYPE_U8:
3363 value->vu8 = nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]);
3364 break;
3365 case DEVLINK_PARAM_TYPE_U16:
3366 value->vu16 = nla_get_u16(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]);
3367 break;
3368 case DEVLINK_PARAM_TYPE_U32:
3369 value->vu32 = nla_get_u32(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]);
3370 break;
3371 case DEVLINK_PARAM_TYPE_STRING:
f355cfcd
MS		 3372 len = strnlen(nla_data(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]),
3373 nla_len(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]));
3374 if (len == nla_len(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]) ||
bde74ad1 3375 len >= __DEVLINK_PARAM_MAX_STRING_VALUE)
e3b7ca18 3376 return -EINVAL;
f355cfcd
MS		 3377 strcpy(value->vstr,
3378 nla_data(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]));
e3b7ca18
MS		 3379 break;
3380 case DEVLINK_PARAM_TYPE_BOOL:
3381 value->vbool = info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA] ?
3382 true : false;
3383 break;
3384 }
3385 return 0;
3386}
3387
45f05def 3388static struct devlink_param_item *
f4601dee 3389devlink_param_get_from_info(struct list_head *param_list,
45f05def
MS		 3390 struct genl_info *info)
3391{
3392 char *param_name;
3393
3394 if (!info->attrs[DEVLINK_ATTR_PARAM_NAME])
3395 return NULL;
3396
3397 param_name = nla_data(info->attrs[DEVLINK_ATTR_PARAM_NAME]);
f4601dee 3398 return devlink_param_find_by_name(param_list, param_name);
45f05def
MS		 3399}
3400
3401static int devlink_nl_cmd_param_get_doit(struct sk_buff *skb,
3402 struct genl_info *info)
3403{
3404 struct devlink *devlink = info->user_ptr[0];
3405 struct devlink_param_item *param_item;
3406 struct sk_buff *msg;
3407 int err;
3408
f4601dee 3409 param_item = devlink_param_get_from_info(&devlink->param_list, info);
45f05def
MS		 3410 if (!param_item)
3411 return -EINVAL;
3412
3413 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3414 if (!msg)
3415 return -ENOMEM;
3416
f4601dee 3417 err = devlink_nl_param_fill(msg, devlink, 0, param_item,
45f05def
MS		 3418 DEVLINK_CMD_PARAM_GET,
3419 info->snd_portid, info->snd_seq, 0);
3420 if (err) {
3421 nlmsg_free(msg);
3422 return err;
3423 }
3424
3425 return genlmsg_reply(msg, info);
3426}
3427
9c54873b 3428static int __devlink_nl_cmd_param_set_doit(struct devlink *devlink,
c1e5786d 3429 unsigned int port_index,
9c54873b
VV		 3430 struct list_head *param_list,
3431 struct genl_info *info,
3432 enum devlink_command cmd)
e3b7ca18 3433{
e3b7ca18
MS		 3434 enum devlink_param_type param_type;
3435 struct devlink_param_gset_ctx ctx;
3436 enum devlink_param_cmode cmode;
3437 struct devlink_param_item *param_item;
3438 const struct devlink_param *param;
3439 union devlink_param_value value;
3440 int err = 0;
3441
9c54873b 3442 param_item = devlink_param_get_from_info(param_list, info);
e3b7ca18
MS		 3443 if (!param_item)
3444 return -EINVAL;
3445 param = param_item->param;
3446 err = devlink_param_type_get_from_info(info, &param_type);
3447 if (err)
3448 return err;
3449 if (param_type != param->type)
3450 return -EINVAL;
3451 err = devlink_param_value_get_from_info(param, info, &value);
3452 if (err)
3453 return err;
3454 if (param->validate) {
3455 err = param->validate(devlink, param->id, value, info->extack);
3456 if (err)
3457 return err;
3458 }
3459
3460 if (!info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE])
3461 return -EINVAL;
3462 cmode = nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE]);
3463 if (!devlink_param_cmode_is_supported(param, cmode))
3464 return -EOPNOTSUPP;
3465
3466 if (cmode == DEVLINK_PARAM_CMODE_DRIVERINIT) {
1276534c
MS		 3467 if (param->type == DEVLINK_PARAM_TYPE_STRING)
3468 strcpy(param_item->driverinit_value.vstr, value.vstr);
3469 else
3470 param_item->driverinit_value = value;
e3b7ca18
MS		 3471 param_item->driverinit_value_valid = true;
3472 } else {
3473 if (!param->set)
3474 return -EOPNOTSUPP;
3475 ctx.val = value;
3476 ctx.cmode = cmode;
3477 err = devlink_param_set(devlink, param, &ctx);
3478 if (err)
3479 return err;
3480 }
3481
c1e5786d 3482 devlink_param_notify(devlink, port_index, param_item, cmd);
e3b7ca18
MS		 3483 return 0;
3484}
3485
9c54873b
VV		 3486static int devlink_nl_cmd_param_set_doit(struct sk_buff *skb,
3487 struct genl_info *info)
3488{
3489 struct devlink *devlink = info->user_ptr[0];
3490
c1e5786d 3491 return __devlink_nl_cmd_param_set_doit(devlink, 0, &devlink->param_list,
9c54873b
VV		 3492 info, DEVLINK_CMD_PARAM_NEW);
3493}
3494
eabaef18 3495static int devlink_param_register_one(struct devlink *devlink,
c1e5786d 3496 unsigned int port_index,
39e6160e 3497 struct list_head *param_list,
c1e5786d
VV		 3498 const struct devlink_param *param,
3499 enum devlink_command cmd)
eabaef18
MS		 3500{
3501 struct devlink_param_item *param_item;
3502
39e6160e 3503 if (devlink_param_find_by_name(param_list, param->name))
eabaef18
MS		 3504 return -EEXIST;
3505
3506 if (param->supported_cmodes == BIT(DEVLINK_PARAM_CMODE_DRIVERINIT))
3507 WARN_ON(param->get || param->set);
3508 else
3509 WARN_ON(!param->get || !param->set);
3510
3511 param_item = kzalloc(sizeof(*param_item), GFP_KERNEL);
3512 if (!param_item)
3513 return -ENOMEM;
3514 param_item->param = param;
3515
39e6160e 3516 list_add_tail(&param_item->list, param_list);
c1e5786d 3517 devlink_param_notify(devlink, port_index, param_item, cmd);
eabaef18
MS		 3518 return 0;
3519}
3520
3521static void devlink_param_unregister_one(struct devlink *devlink,
c1e5786d 3522 unsigned int port_index,
39e6160e 3523 struct list_head *param_list,
c1e5786d
VV		 3524 const struct devlink_param *param,
3525 enum devlink_command cmd)
eabaef18
MS		 3526{
3527 struct devlink_param_item *param_item;
3528
39e6160e 3529 param_item = devlink_param_find_by_name(param_list, param->name);
eabaef18 3530 WARN_ON(!param_item);
c1e5786d 3531 devlink_param_notify(devlink, port_index, param_item, cmd);
eabaef18
MS		 3532 list_del(&param_item->list);
3533 kfree(param_item);
3534}
3535
f4601dee
VV		 3536static int devlink_nl_cmd_port_param_get_dumpit(struct sk_buff *msg,
3537 struct netlink_callback *cb)
3538{
3539 struct devlink_param_item *param_item;
3540 struct devlink_port *devlink_port;
3541 struct devlink *devlink;
3542 int start = cb->args[0];
3543 int idx = 0;
c62c2cfb 3544 int err = 0;
f4601dee
VV		 3545
3546 mutex_lock(&devlink_mutex);
3547 list_for_each_entry(devlink, &devlink_list, list) {
3548 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
3549 continue;
3550 mutex_lock(&devlink->lock);
3551 list_for_each_entry(devlink_port, &devlink->port_list, list) {
3552 list_for_each_entry(param_item,
3553 &devlink_port->param_list, list) {
3554 if (idx < start) {
3555 idx++;
3556 continue;
3557 }
3558 err = devlink_nl_param_fill(msg,
3559 devlink_port->devlink,
3560 devlink_port->index, param_item,
3561 DEVLINK_CMD_PORT_PARAM_GET,
3562 NETLINK_CB(cb->skb).portid,
3563 cb->nlh->nlmsg_seq,
3564 NLM_F_MULTI);
93c2fcb0 3565 if (err && err != -EOPNOTSUPP) {
f4601dee
VV		 3566 mutex_unlock(&devlink->lock);
3567 goto out;
3568 }
3569 idx++;
3570 }
3571 }
3572 mutex_unlock(&devlink->lock);
3573 }
3574out:
3575 mutex_unlock(&devlink_mutex);
3576
c62c2cfb
JP		 3577 if (err != -EMSGSIZE)
3578 return err;
3579
f4601dee
VV		 3580 cb->args[0] = idx;
3581 return msg->len;
3582}
3583
3584static int devlink_nl_cmd_port_param_get_doit(struct sk_buff *skb,
3585 struct genl_info *info)
3586{
3587 struct devlink_port *devlink_port = info->user_ptr[0];
3588 struct devlink_param_item *param_item;
3589 struct sk_buff *msg;
3590 int err;
3591
3592 param_item = devlink_param_get_from_info(&devlink_port->param_list,
3593 info);
3594 if (!param_item)
3595 return -EINVAL;
3596
3597 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3598 if (!msg)
3599 return -ENOMEM;
3600
3601 err = devlink_nl_param_fill(msg, devlink_port->devlink,
3602 devlink_port->index, param_item,
3603 DEVLINK_CMD_PORT_PARAM_GET,
3604 info->snd_portid, info->snd_seq, 0);
3605 if (err) {
3606 nlmsg_free(msg);
3607 return err;
3608 }
3609
3610 return genlmsg_reply(msg, info);
3611}
3612
9c54873b
VV		 3613static int devlink_nl_cmd_port_param_set_doit(struct sk_buff *skb,
3614 struct genl_info *info)
3615{
3616 struct devlink_port *devlink_port = info->user_ptr[0];
3617
3618 return __devlink_nl_cmd_param_set_doit(devlink_port->devlink,
c1e5786d
VV		 3619 devlink_port->index,
3620 &devlink_port->param_list, info,
3621 DEVLINK_CMD_PORT_PARAM_NEW);
9c54873b
VV		 3622}
3623
a006d467
AV		 3624static int devlink_nl_region_snapshot_id_put(struct sk_buff *msg,
3625 struct devlink *devlink,
3626 struct devlink_snapshot *snapshot)
3627{
3628 struct nlattr *snap_attr;
3629 int err;
3630
ae0be8de 3631 snap_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_SNAPSHOT);
a006d467
AV		 3632 if (!snap_attr)
3633 return -EINVAL;
3634
3635 err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID, snapshot->id);
3636 if (err)
3637 goto nla_put_failure;
3638
3639 nla_nest_end(msg, snap_attr);
3640 return 0;
3641
3642nla_put_failure:
3643 nla_nest_cancel(msg, snap_attr);
3644 return err;
3645}
3646
3647static int devlink_nl_region_snapshots_id_put(struct sk_buff *msg,
3648 struct devlink *devlink,
3649 struct devlink_region *region)
3650{
3651 struct devlink_snapshot *snapshot;
3652 struct nlattr *snapshots_attr;
3653 int err;
3654
ae0be8de
MK		 3655 snapshots_attr = nla_nest_start_noflag(msg,
3656 DEVLINK_ATTR_REGION_SNAPSHOTS);
a006d467
AV		 3657 if (!snapshots_attr)
3658 return -EINVAL;
3659
3660 list_for_each_entry(snapshot, &region->snapshot_list, list) {
3661 err = devlink_nl_region_snapshot_id_put(msg, devlink, snapshot);
3662 if (err)
3663 goto nla_put_failure;
3664 }
3665
3666 nla_nest_end(msg, snapshots_attr);
3667 return 0;
3668
3669nla_put_failure:
3670 nla_nest_cancel(msg, snapshots_attr);
3671 return err;
3672}
3673
d8db7ea5
AV		 3674static int devlink_nl_region_fill(struct sk_buff *msg, struct devlink *devlink,
3675 enum devlink_command cmd, u32 portid,
3676 u32 seq, int flags,
3677 struct devlink_region *region)
3678{
3679 void *hdr;
3680 int err;
3681
3682 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
3683 if (!hdr)
3684 return -EMSGSIZE;
3685
3686 err = devlink_nl_put_handle(msg, devlink);
3687 if (err)
3688 goto nla_put_failure;
3689
3690 err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME, region->name);
3691 if (err)
3692 goto nla_put_failure;
3693
3694 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
3695 region->size,
3696 DEVLINK_ATTR_PAD);
3697 if (err)
3698 goto nla_put_failure;
3699
a006d467
AV		 3700 err = devlink_nl_region_snapshots_id_put(msg, devlink, region);
3701 if (err)
3702 goto nla_put_failure;
3703
d8db7ea5
AV		 3704 genlmsg_end(msg, hdr);
3705 return 0;
3706
3707nla_put_failure:
3708 genlmsg_cancel(msg, hdr);
3709 return err;
3710}
3711
866319bb
AV		 3712static void devlink_nl_region_notify(struct devlink_region *region,
3713 struct devlink_snapshot *snapshot,
3714 enum devlink_command cmd)
3715{
3716 struct devlink *devlink = region->devlink;
3717 struct sk_buff *msg;
3718 void *hdr;
3719 int err;
3720
3721 WARN_ON(cmd != DEVLINK_CMD_REGION_NEW && cmd != DEVLINK_CMD_REGION_DEL);
3722
3723 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3724 if (!msg)
3725 return;
3726
3727 hdr = genlmsg_put(msg, 0, 0, &devlink_nl_family, 0, cmd);
3728 if (!hdr)
3729 goto out_free_msg;
3730
3731 err = devlink_nl_put_handle(msg, devlink);
3732 if (err)
3733 goto out_cancel_msg;
3734
3735 err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME,
3736 region->name);
3737 if (err)
3738 goto out_cancel_msg;
3739
3740 if (snapshot) {
3741 err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID,
3742 snapshot->id);
3743 if (err)
3744 goto out_cancel_msg;
3745 } else {
3746 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
3747 region->size, DEVLINK_ATTR_PAD);
3748 if (err)
3749 goto out_cancel_msg;
3750 }
3751 genlmsg_end(msg, hdr);
3752
3753 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
3754 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
3755
3756 return;
3757
3758out_cancel_msg:
3759 genlmsg_cancel(msg, hdr);
3760out_free_msg:
3761 nlmsg_free(msg);
3762}
3763
92b49822
JP		 3764static void devlink_region_snapshot_del(struct devlink_region *region,
3765 struct devlink_snapshot *snapshot)
3766{
3767 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_DEL);
3768 region->cur_snapshots--;
3769 list_del(&snapshot->list);
3770 (*snapshot->data_destructor)(snapshot->data);
3771 kfree(snapshot);
3772}
3773
d8db7ea5
AV		 3774static int devlink_nl_cmd_region_get_doit(struct sk_buff *skb,
3775 struct genl_info *info)
3776{
3777 struct devlink *devlink = info->user_ptr[0];
3778 struct devlink_region *region;
3779 const char *region_name;
3780 struct sk_buff *msg;
3781 int err;
3782
3783 if (!info->attrs[DEVLINK_ATTR_REGION_NAME])
3784 return -EINVAL;
3785
3786 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
3787 region = devlink_region_get_by_name(devlink, region_name);
3788 if (!region)
3789 return -EINVAL;
3790
3791 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3792 if (!msg)
3793 return -ENOMEM;
3794
3795 err = devlink_nl_region_fill(msg, devlink, DEVLINK_CMD_REGION_GET,
3796 info->snd_portid, info->snd_seq, 0,
3797 region);
3798 if (err) {
3799 nlmsg_free(msg);
3800 return err;
3801 }
3802
3803 return genlmsg_reply(msg, info);
3804}
3805
3806static int devlink_nl_cmd_region_get_dumpit(struct sk_buff *msg,
3807 struct netlink_callback *cb)
3808{
3809 struct devlink_region *region;
3810 struct devlink *devlink;
3811 int start = cb->args[0];
3812 int idx = 0;
3813 int err;
3814
3815 mutex_lock(&devlink_mutex);
3816 list_for_each_entry(devlink, &devlink_list, list) {
3817 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
3818 continue;
3819
3820 mutex_lock(&devlink->lock);
3821 list_for_each_entry(region, &devlink->region_list, list) {
3822 if (idx < start) {
3823 idx++;
3824 continue;
3825 }
3826 err = devlink_nl_region_fill(msg, devlink,
3827 DEVLINK_CMD_REGION_GET,
3828 NETLINK_CB(cb->skb).portid,
3829 cb->nlh->nlmsg_seq,
3830 NLM_F_MULTI, region);
3831 if (err) {
3832 mutex_unlock(&devlink->lock);
3833 goto out;
3834 }
3835 idx++;
3836 }
3837 mutex_unlock(&devlink->lock);
3838 }
3839out:
3840 mutex_unlock(&devlink_mutex);
3841 cb->args[0] = idx;
3842 return msg->len;
3843}
3844
866319bb
AV		 3845static int devlink_nl_cmd_region_del(struct sk_buff *skb,
3846 struct genl_info *info)
3847{
3848 struct devlink *devlink = info->user_ptr[0];
3849 struct devlink_snapshot *snapshot;
3850 struct devlink_region *region;
3851 const char *region_name;
3852 u32 snapshot_id;
3853
3854 if (!info->attrs[DEVLINK_ATTR_REGION_NAME] ||
3855 !info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID])
3856 return -EINVAL;
3857
3858 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
3859 snapshot_id = nla_get_u32(info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
3860
3861 region = devlink_region_get_by_name(devlink, region_name);
3862 if (!region)
3863 return -EINVAL;
3864
3865 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
3866 if (!snapshot)
3867 return -EINVAL;
3868
92b49822 3869 devlink_region_snapshot_del(region, snapshot);
866319bb
AV		 3870 return 0;
3871}
3872
4e54795a
AV		 3873static int devlink_nl_cmd_region_read_chunk_fill(struct sk_buff *msg,
3874 struct devlink *devlink,
3875 u8 *chunk, u32 chunk_size,
3876 u64 addr)
3877{
3878 struct nlattr *chunk_attr;
3879 int err;
3880
ae0be8de 3881 chunk_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_CHUNK);
4e54795a
AV		 3882 if (!chunk_attr)
3883 return -EINVAL;
3884
3885 err = nla_put(msg, DEVLINK_ATTR_REGION_CHUNK_DATA, chunk_size, chunk);
3886 if (err)
3887 goto nla_put_failure;
3888
3889 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_CHUNK_ADDR, addr,
3890 DEVLINK_ATTR_PAD);
3891 if (err)
3892 goto nla_put_failure;
3893
3894 nla_nest_end(msg, chunk_attr);
3895 return 0;
3896
3897nla_put_failure:
3898 nla_nest_cancel(msg, chunk_attr);
3899 return err;
3900}
3901
3902#define DEVLINK_REGION_READ_CHUNK_SIZE 256
3903
3904static int devlink_nl_region_read_snapshot_fill(struct sk_buff *skb,
3905 struct devlink *devlink,
3906 struct devlink_region *region,
3907 struct nlattr **attrs,
3908 u64 start_offset,
3909 u64 end_offset,
3910 bool dump,
3911 u64 *new_offset)
3912{
3913 struct devlink_snapshot *snapshot;
3914 u64 curr_offset = start_offset;
3915 u32 snapshot_id;
3916 int err = 0;
3917
3918 *new_offset = start_offset;
3919
3920 snapshot_id = nla_get_u32(attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
3921 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
3922 if (!snapshot)
3923 return -EINVAL;
3924
3a5e5234
JP		 3925 if (end_offset > region->size || dump)
3926 end_offset = region->size;
4e54795a
AV		 3927
3928 while (curr_offset < end_offset) {
3929 u32 data_size;
3930 u8 *data;
3931
3932 if (end_offset - curr_offset < DEVLINK_REGION_READ_CHUNK_SIZE)
3933 data_size = end_offset - curr_offset;
3934 else
3935 data_size = DEVLINK_REGION_READ_CHUNK_SIZE;
3936
3937 data = &snapshot->data[curr_offset];
3938 err = devlink_nl_cmd_region_read_chunk_fill(skb, devlink,
3939 data, data_size,
3940 curr_offset);
3941 if (err)
3942 break;
3943
3944 curr_offset += data_size;
3945 }
3946 *new_offset = curr_offset;
3947
3948 return err;
3949}
3950
3951static int devlink_nl_cmd_region_read_dumpit(struct sk_buff *skb,
3952 struct netlink_callback *cb)
3953{
ee85da53 3954 const struct genl_dumpit_info *info = genl_dumpit_info(cb);
4e54795a 3955 u64 ret_offset, start_offset, end_offset = 0;
ee85da53 3956 struct nlattr **attrs = info->attrs;
4e54795a
AV		 3957 struct devlink_region *region;
3958 struct nlattr *chunks_attr;
3959 const char *region_name;
3960 struct devlink *devlink;
3961 bool dump = true;
3962 void *hdr;
3963 int err;
3964
3965 start_offset = *((u64 *)&cb->args[0]);
3966
dac7c08f 3967 mutex_lock(&devlink_mutex);
4e54795a 3968 devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
fdd41ec2
PP		 3969 if (IS_ERR(devlink)) {
3970 err = PTR_ERR(devlink);
dac7c08f 3971 goto out_dev;
fdd41ec2 3972 }
4e54795a 3973
4e54795a
AV		 3974 mutex_lock(&devlink->lock);
3975
3976 if (!attrs[DEVLINK_ATTR_REGION_NAME] ||
fdd41ec2
PP		 3977 !attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]) {
3978 err = -EINVAL;
4e54795a 3979 goto out_unlock;
fdd41ec2 3980 }
4e54795a
AV		 3981
3982 region_name = nla_data(attrs[DEVLINK_ATTR_REGION_NAME]);
3983 region = devlink_region_get_by_name(devlink, region_name);
fdd41ec2
PP		 3984 if (!region) {
3985 err = -EINVAL;
4e54795a 3986 goto out_unlock;
fdd41ec2 3987 }
4e54795a
AV		 3988
3989 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
3990 &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI,
3991 DEVLINK_CMD_REGION_READ);
fdd41ec2
PP		 3992 if (!hdr) {
3993 err = -EMSGSIZE;
4e54795a 3994 goto out_unlock;
fdd41ec2 3995 }
4e54795a
AV		 3996
3997 err = devlink_nl_put_handle(skb, devlink);
3998 if (err)
3999 goto nla_put_failure;
4000
4001 err = nla_put_string(skb, DEVLINK_ATTR_REGION_NAME, region_name);
4002 if (err)
4003 goto nla_put_failure;
4004
ae0be8de 4005 chunks_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_REGION_CHUNKS);
fdd41ec2
PP		 4006 if (!chunks_attr) {
4007 err = -EMSGSIZE;
4e54795a 4008 goto nla_put_failure;
fdd41ec2 4009 }
4e54795a
AV		 4010
4011 if (attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR] &&
4012 attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]) {
4013 if (!start_offset)
4014 start_offset =
4015 nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
4016
4017 end_offset = nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
4018 end_offset += nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]);
4019 dump = false;
4020 }
4021
4022 err = devlink_nl_region_read_snapshot_fill(skb, devlink,
4023 region, attrs,
4024 start_offset,
4025 end_offset, dump,
4026 &ret_offset);
4027
4028 if (err && err != -EMSGSIZE)
4029 goto nla_put_failure;
4030
4031 /* Check if there was any progress done to prevent infinite loop */
fdd41ec2
PP		 4032 if (ret_offset == start_offset) {
4033 err = -EINVAL;
4e54795a 4034 goto nla_put_failure;
fdd41ec2 4035 }
4e54795a
AV		 4036
4037 *((u64 *)&cb->args[0]) = ret_offset;
4038
4039 nla_nest_end(skb, chunks_attr);
4040 genlmsg_end(skb, hdr);
4041 mutex_unlock(&devlink->lock);
4042 mutex_unlock(&devlink_mutex);
4043
4044 return skb->len;
4045
4046nla_put_failure:
4047 genlmsg_cancel(skb, hdr);
4048out_unlock:
4049 mutex_unlock(&devlink->lock);
dac7c08f 4050out_dev:
4e54795a 4051 mutex_unlock(&devlink_mutex);
fdd41ec2 4052 return err;
4e54795a
AV		 4053}
4054
f9cf2288
JK		 4055struct devlink_info_req {
4056 struct sk_buff *msg;
4057};
4058
4059int devlink_info_driver_name_put(struct devlink_info_req *req, const char *name)
4060{
4061 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_DRIVER_NAME, name);
4062}
4063EXPORT_SYMBOL_GPL(devlink_info_driver_name_put);
4064
4065int devlink_info_serial_number_put(struct devlink_info_req *req, const char *sn)
4066{
4067 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_SERIAL_NUMBER, sn);
4068}
4069EXPORT_SYMBOL_GPL(devlink_info_serial_number_put);
4070
fc6fae7d
JK		 4071static int devlink_info_version_put(struct devlink_info_req *req, int attr,
4072 const char *version_name,
4073 const char *version_value)
4074{
4075 struct nlattr *nest;
4076 int err;
4077
ae0be8de 4078 nest = nla_nest_start_noflag(req->msg, attr);
fc6fae7d
JK		 4079 if (!nest)
4080 return -EMSGSIZE;
4081
4082 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_NAME,
4083 version_name);
4084 if (err)
4085 goto nla_put_failure;
4086
4087 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_VALUE,
4088 version_value);
4089 if (err)
4090 goto nla_put_failure;
4091
4092 nla_nest_end(req->msg, nest);
4093
4094 return 0;
4095
4096nla_put_failure:
4097 nla_nest_cancel(req->msg, nest);
4098 return err;
4099}
4100
4101int devlink_info_version_fixed_put(struct devlink_info_req *req,
4102 const char *version_name,
4103 const char *version_value)
4104{
4105 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_FIXED,
4106 version_name, version_value);
4107}
4108EXPORT_SYMBOL_GPL(devlink_info_version_fixed_put);
4109
4110int devlink_info_version_stored_put(struct devlink_info_req *req,
4111 const char *version_name,
4112 const char *version_value)
4113{
4114 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_STORED,
4115 version_name, version_value);
4116}
4117EXPORT_SYMBOL_GPL(devlink_info_version_stored_put);
4118
4119int devlink_info_version_running_put(struct devlink_info_req *req,
4120 const char *version_name,
4121 const char *version_value)
4122{
4123 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_RUNNING,
4124 version_name, version_value);
4125}
4126EXPORT_SYMBOL_GPL(devlink_info_version_running_put);
4127
f9cf2288
JK		 4128static int
4129devlink_nl_info_fill(struct sk_buff *msg, struct devlink *devlink,
4130 enum devlink_command cmd, u32 portid,
4131 u32 seq, int flags, struct netlink_ext_ack *extack)
4132{
4133 struct devlink_info_req req;
4134 void *hdr;
4135 int err;
4136
4137 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
4138 if (!hdr)
4139 return -EMSGSIZE;
4140
4141 err = -EMSGSIZE;
4142 if (devlink_nl_put_handle(msg, devlink))
4143 goto err_cancel_msg;
4144
4145 req.msg = msg;
4146 err = devlink->ops->info_get(devlink, &req, extack);
4147 if (err)
4148 goto err_cancel_msg;
4149
4150 genlmsg_end(msg, hdr);
4151 return 0;
4152
4153err_cancel_msg:
4154 genlmsg_cancel(msg, hdr);
4155 return err;
4156}
4157
4158static int devlink_nl_cmd_info_get_doit(struct sk_buff *skb,
4159 struct genl_info *info)
4160{
4161 struct devlink *devlink = info->user_ptr[0];
4162 struct sk_buff *msg;
4163 int err;
4164
be6fe1d8 4165 if (!devlink->ops->info_get)
f9cf2288
JK		 4166 return -EOPNOTSUPP;
4167
4168 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4169 if (!msg)
4170 return -ENOMEM;
4171
4172 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
4173 info->snd_portid, info->snd_seq, 0,
4174 info->extack);
4175 if (err) {
4176 nlmsg_free(msg);
4177 return err;
4178 }
4179
4180 return genlmsg_reply(msg, info);
4181}
4182
4183static int devlink_nl_cmd_info_get_dumpit(struct sk_buff *msg,
4184 struct netlink_callback *cb)
4185{
4186 struct devlink *devlink;
4187 int start = cb->args[0];
4188 int idx = 0;
c62c2cfb 4189 int err = 0;
f9cf2288
JK		 4190
4191 mutex_lock(&devlink_mutex);
4192 list_for_each_entry(devlink, &devlink_list, list) {
4193 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
4194 continue;
4195 if (idx < start) {
4196 idx++;
4197 continue;
4198 }
4199
c493b09b
JP		 4200 if (!devlink->ops->info_get) {
4201 idx++;
4202 continue;
4203 }
4204
f9cf2288
JK		 4205 mutex_lock(&devlink->lock);
4206 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
4207 NETLINK_CB(cb->skb).portid,
4208 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4209 cb->extack);
4210 mutex_unlock(&devlink->lock);
93c2fcb0 4211 if (err && err != -EOPNOTSUPP)
f9cf2288
JK		 4212 break;
4213 idx++;
4214 }
4215 mutex_unlock(&devlink_mutex);
4216
c62c2cfb
JP		 4217 if (err != -EMSGSIZE)
4218 return err;
4219
f9cf2288
JK		 4220 cb->args[0] = idx;
4221 return msg->len;
4222}
4223
1db64e87
EBE		 4224struct devlink_fmsg_item {
4225 struct list_head list;
4226 int attrtype;
4227 u8 nla_type;
4228 u16 len;
4229 int value[0];
4230};
4231
4232struct devlink_fmsg {
4233 struct list_head item_list;
4234};
4235
4236static struct devlink_fmsg *devlink_fmsg_alloc(void)
4237{
4238 struct devlink_fmsg *fmsg;
4239
4240 fmsg = kzalloc(sizeof(*fmsg), GFP_KERNEL);
4241 if (!fmsg)
4242 return NULL;
4243
4244 INIT_LIST_HEAD(&fmsg->item_list);
4245
4246 return fmsg;
4247}
4248
4249static void devlink_fmsg_free(struct devlink_fmsg *fmsg)
4250{
4251 struct devlink_fmsg_item *item, *tmp;
4252
4253 list_for_each_entry_safe(item, tmp, &fmsg->item_list, list) {
4254 list_del(&item->list);
4255 kfree(item);
4256 }
4257 kfree(fmsg);
4258}
4259
4260static int devlink_fmsg_nest_common(struct devlink_fmsg *fmsg,
4261 int attrtype)
4262{
4263 struct devlink_fmsg_item *item;
4264
4265 item = kzalloc(sizeof(*item), GFP_KERNEL);
4266 if (!item)
4267 return -ENOMEM;
4268
4269 item->attrtype = attrtype;
4270 list_add_tail(&item->list, &fmsg->item_list);
4271
4272 return 0;
4273}
4274
4275int devlink_fmsg_obj_nest_start(struct devlink_fmsg *fmsg)
4276{
4277 return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_OBJ_NEST_START);
4278}
4279EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_start);
4280
4281static int devlink_fmsg_nest_end(struct devlink_fmsg *fmsg)
4282{
4283 return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_NEST_END);
4284}
4285
4286int devlink_fmsg_obj_nest_end(struct devlink_fmsg *fmsg)
4287{
4288 return devlink_fmsg_nest_end(fmsg);
4289}
4290EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_end);
4291
4292#define DEVLINK_FMSG_MAX_SIZE (GENLMSG_DEFAULT_SIZE - GENL_HDRLEN - NLA_HDRLEN)
4293
4294static int devlink_fmsg_put_name(struct devlink_fmsg *fmsg, const char *name)
4295{
4296 struct devlink_fmsg_item *item;
4297
4298 if (strlen(name) + 1 > DEVLINK_FMSG_MAX_SIZE)
4299 return -EMSGSIZE;
4300
4301 item = kzalloc(sizeof(*item) + strlen(name) + 1, GFP_KERNEL);
4302 if (!item)
4303 return -ENOMEM;
4304
4305 item->nla_type = NLA_NUL_STRING;
4306 item->len = strlen(name) + 1;
4307 item->attrtype = DEVLINK_ATTR_FMSG_OBJ_NAME;
4308 memcpy(&item->value, name, item->len);
4309 list_add_tail(&item->list, &fmsg->item_list);
4310
4311 return 0;
4312}
4313
4314int devlink_fmsg_pair_nest_start(struct devlink_fmsg *fmsg, const char *name)
4315{
4316 int err;
4317
4318 err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_PAIR_NEST_START);
4319 if (err)
4320 return err;
4321
4322 err = devlink_fmsg_put_name(fmsg, name);
4323 if (err)
4324 return err;
4325
4326 return 0;
4327}
4328EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_start);
4329
4330int devlink_fmsg_pair_nest_end(struct devlink_fmsg *fmsg)
4331{
4332 return devlink_fmsg_nest_end(fmsg);
4333}
4334EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_end);
4335
4336int devlink_fmsg_arr_pair_nest_start(struct devlink_fmsg *fmsg,
4337 const char *name)
4338{
4339 int err;
4340
4341 err = devlink_fmsg_pair_nest_start(fmsg, name);
4342 if (err)
4343 return err;
4344
4345 err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_ARR_NEST_START);
4346 if (err)
4347 return err;
4348
4349 return 0;
4350}
4351EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_start);
4352
4353int devlink_fmsg_arr_pair_nest_end(struct devlink_fmsg *fmsg)
4354{
4355 int err;
4356
4357 err = devlink_fmsg_nest_end(fmsg);
4358 if (err)
4359 return err;
4360
4361 err = devlink_fmsg_nest_end(fmsg);
4362 if (err)
4363 return err;
4364
4365 return 0;
4366}
4367EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_end);
4368
4369static int devlink_fmsg_put_value(struct devlink_fmsg *fmsg,
4370 const void *value, u16 value_len,
4371 u8 value_nla_type)
4372{
4373 struct devlink_fmsg_item *item;
4374
4375 if (value_len > DEVLINK_FMSG_MAX_SIZE)
4376 return -EMSGSIZE;
4377
4378 item = kzalloc(sizeof(*item) + value_len, GFP_KERNEL);
4379 if (!item)
4380 return -ENOMEM;
4381
4382 item->nla_type = value_nla_type;
4383 item->len = value_len;
4384 item->attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
4385 memcpy(&item->value, value, item->len);
4386 list_add_tail(&item->list, &fmsg->item_list);
4387
4388 return 0;
4389}
4390
4391int devlink_fmsg_bool_put(struct devlink_fmsg *fmsg, bool value)
4392{
4393 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_FLAG);
4394}
4395EXPORT_SYMBOL_GPL(devlink_fmsg_bool_put);
4396
4397int devlink_fmsg_u8_put(struct devlink_fmsg *fmsg, u8 value)
4398{
4399 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U8);
4400}
4401EXPORT_SYMBOL_GPL(devlink_fmsg_u8_put);
4402
4403int devlink_fmsg_u32_put(struct devlink_fmsg *fmsg, u32 value)
4404{
4405 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U32);
4406}
4407EXPORT_SYMBOL_GPL(devlink_fmsg_u32_put);
4408
4409int devlink_fmsg_u64_put(struct devlink_fmsg *fmsg, u64 value)
4410{
4411 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U64);
4412}
4413EXPORT_SYMBOL_GPL(devlink_fmsg_u64_put);
4414
4415int devlink_fmsg_string_put(struct devlink_fmsg *fmsg, const char *value)
4416{
4417 return devlink_fmsg_put_value(fmsg, value, strlen(value) + 1,
4418 NLA_NUL_STRING);
4419}
4420EXPORT_SYMBOL_GPL(devlink_fmsg_string_put);
4421
e2cde864
AL		 4422static int devlink_fmsg_binary_put(struct devlink_fmsg *fmsg, const void *value,
4423 u16 value_len)
1db64e87
EBE		 4424{
4425 return devlink_fmsg_put_value(fmsg, value, value_len, NLA_BINARY);
4426}
1db64e87
EBE		 4427
4428int devlink_fmsg_bool_pair_put(struct devlink_fmsg *fmsg, const char *name,
4429 bool value)
4430{
4431 int err;
4432
4433 err = devlink_fmsg_pair_nest_start(fmsg, name);
4434 if (err)
4435 return err;
4436
4437 err = devlink_fmsg_bool_put(fmsg, value);
4438 if (err)
4439 return err;
4440
4441 err = devlink_fmsg_pair_nest_end(fmsg);
4442 if (err)
4443 return err;
4444
4445 return 0;
4446}
4447EXPORT_SYMBOL_GPL(devlink_fmsg_bool_pair_put);
4448
4449int devlink_fmsg_u8_pair_put(struct devlink_fmsg *fmsg, const char *name,
4450 u8 value)
4451{
4452 int err;
4453
4454 err = devlink_fmsg_pair_nest_start(fmsg, name);
4455 if (err)
4456 return err;
4457
4458 err = devlink_fmsg_u8_put(fmsg, value);
4459 if (err)
4460 return err;
4461
4462 err = devlink_fmsg_pair_nest_end(fmsg);
4463 if (err)
4464 return err;
4465
4466 return 0;
4467}
4468EXPORT_SYMBOL_GPL(devlink_fmsg_u8_pair_put);
4469
4470int devlink_fmsg_u32_pair_put(struct devlink_fmsg *fmsg, const char *name,
4471 u32 value)
4472{
4473 int err;
4474
4475 err = devlink_fmsg_pair_nest_start(fmsg, name);
4476 if (err)
4477 return err;
4478
4479 err = devlink_fmsg_u32_put(fmsg, value);
4480 if (err)
4481 return err;
4482
4483 err = devlink_fmsg_pair_nest_end(fmsg);
4484 if (err)
4485 return err;
4486
4487 return 0;
4488}
4489EXPORT_SYMBOL_GPL(devlink_fmsg_u32_pair_put);
4490
4491int devlink_fmsg_u64_pair_put(struct devlink_fmsg *fmsg, const char *name,
4492 u64 value)
4493{
4494 int err;
4495
4496 err = devlink_fmsg_pair_nest_start(fmsg, name);
4497 if (err)
4498 return err;
4499
4500 err = devlink_fmsg_u64_put(fmsg, value);
4501 if (err)
4502 return err;
4503
4504 err = devlink_fmsg_pair_nest_end(fmsg);
4505 if (err)
4506 return err;
4507
4508 return 0;
4509}
4510EXPORT_SYMBOL_GPL(devlink_fmsg_u64_pair_put);
4511
4512int devlink_fmsg_string_pair_put(struct devlink_fmsg *fmsg, const char *name,
4513 const char *value)
4514{
4515 int err;
4516
4517 err = devlink_fmsg_pair_nest_start(fmsg, name);
4518 if (err)
4519 return err;
4520
4521 err = devlink_fmsg_string_put(fmsg, value);
4522 if (err)
4523 return err;
4524
4525 err = devlink_fmsg_pair_nest_end(fmsg);
4526 if (err)
4527 return err;
4528
4529 return 0;
4530}
4531EXPORT_SYMBOL_GPL(devlink_fmsg_string_pair_put);
4532
4533int devlink_fmsg_binary_pair_put(struct devlink_fmsg *fmsg, const char *name,
e2cde864 4534 const void *value, u32 value_len)
1db64e87 4535{
e2cde864
AL		 4536 u32 data_size;
4537 u32 offset;
1db64e87
EBE		 4538 int err;
4539
e2cde864 4540 err = devlink_fmsg_arr_pair_nest_start(fmsg, name);
1db64e87
EBE		 4541 if (err)
4542 return err;
4543
e2cde864
AL		 4544 for (offset = 0; offset < value_len; offset += data_size) {
4545 data_size = value_len - offset;
4546 if (data_size > DEVLINK_FMSG_MAX_SIZE)
4547 data_size = DEVLINK_FMSG_MAX_SIZE;
4548 err = devlink_fmsg_binary_put(fmsg, value + offset, data_size);
4549 if (err)
4550 return err;
4551 }
1db64e87 4552
e2cde864 4553 err = devlink_fmsg_arr_pair_nest_end(fmsg);
1db64e87
EBE		 4554 if (err)
4555 return err;
4556
4557 return 0;
4558}
4559EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_put);
4560
4561static int
4562devlink_fmsg_item_fill_type(struct devlink_fmsg_item *msg, struct sk_buff *skb)
4563{
4564 switch (msg->nla_type) {
4565 case NLA_FLAG:
4566 case NLA_U8:
4567 case NLA_U32:
4568 case NLA_U64:
4569 case NLA_NUL_STRING:
4570 case NLA_BINARY:
4571 return nla_put_u8(skb, DEVLINK_ATTR_FMSG_OBJ_VALUE_TYPE,
4572 msg->nla_type);
4573 default:
4574 return -EINVAL;
4575 }
4576}
4577
4578static int
4579devlink_fmsg_item_fill_data(struct devlink_fmsg_item *msg, struct sk_buff *skb)
4580{
4581 int attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
4582 u8 tmp;
4583
4584 switch (msg->nla_type) {
4585 case NLA_FLAG:
4586 /* Always provide flag data, regardless of its value */
4587 tmp = *(bool *) msg->value;
4588
4589 return nla_put_u8(skb, attrtype, tmp);
4590 case NLA_U8:
4591 return nla_put_u8(skb, attrtype, *(u8 *) msg->value);
4592 case NLA_U32:
4593 return nla_put_u32(skb, attrtype, *(u32 *) msg->value);
4594 case NLA_U64:
4595 return nla_put_u64_64bit(skb, attrtype, *(u64 *) msg->value,
4596 DEVLINK_ATTR_PAD);
4597 case NLA_NUL_STRING:
4598 return nla_put_string(skb, attrtype, (char *) &msg->value);
4599 case NLA_BINARY:
4600 return nla_put(skb, attrtype, msg->len, (void *) &msg->value);
4601 default:
4602 return -EINVAL;
4603 }
4604}
4605
4606static int
4607devlink_fmsg_prepare_skb(struct devlink_fmsg *fmsg, struct sk_buff *skb,
4608 int *start)
4609{
4610 struct devlink_fmsg_item *item;
4611 struct nlattr *fmsg_nlattr;
4612 int i = 0;
4613 int err;
4614
ae0be8de 4615 fmsg_nlattr = nla_nest_start_noflag(skb, DEVLINK_ATTR_FMSG);
1db64e87
EBE		 4616 if (!fmsg_nlattr)
4617 return -EMSGSIZE;
4618
4619 list_for_each_entry(item, &fmsg->item_list, list) {
4620 if (i < *start) {
4621 i++;
4622 continue;
4623 }
4624
4625 switch (item->attrtype) {
4626 case DEVLINK_ATTR_FMSG_OBJ_NEST_START:
4627 case DEVLINK_ATTR_FMSG_PAIR_NEST_START:
4628 case DEVLINK_ATTR_FMSG_ARR_NEST_START:
4629 case DEVLINK_ATTR_FMSG_NEST_END:
4630 err = nla_put_flag(skb, item->attrtype);
4631 break;
4632 case DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA:
4633 err = devlink_fmsg_item_fill_type(item, skb);
4634 if (err)
4635 break;
4636 err = devlink_fmsg_item_fill_data(item, skb);
4637 break;
4638 case DEVLINK_ATTR_FMSG_OBJ_NAME:
4639 err = nla_put_string(skb, item->attrtype,
4640 (char *) &item->value);
4641 break;
4642 default:
4643 err = -EINVAL;
4644 break;
4645 }
4646 if (!err)
4647 *start = ++i;
4648 else
4649 break;
4650 }
4651
4652 nla_nest_end(skb, fmsg_nlattr);
4653 return err;
4654}
4655
4656static int devlink_fmsg_snd(struct devlink_fmsg *fmsg,
4657 struct genl_info *info,
4658 enum devlink_command cmd, int flags)
4659{
4660 struct nlmsghdr *nlh;
4661 struct sk_buff *skb;
4662 bool last = false;
4663 int index = 0;
4664 void *hdr;
4665 int err;
4666
4667 while (!last) {
4668 int tmp_index = index;
4669
4670 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
4671 if (!skb)
4672 return -ENOMEM;
4673
4674 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
4675 &devlink_nl_family, flags | NLM_F_MULTI, cmd);
4676 if (!hdr) {
4677 err = -EMSGSIZE;
4678 goto nla_put_failure;
4679 }
4680
4681 err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
4682 if (!err)
4683 last = true;
4684 else if (err != -EMSGSIZE || tmp_index == index)
4685 goto nla_put_failure;
4686
4687 genlmsg_end(skb, hdr);
4688 err = genlmsg_reply(skb, info);
4689 if (err)
4690 return err;
4691 }
4692
4693 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
4694 if (!skb)
4695 return -ENOMEM;
4696 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
4697 NLMSG_DONE, 0, flags | NLM_F_MULTI);
4698 if (!nlh) {
4699 err = -EMSGSIZE;
4700 goto nla_put_failure;
4701 }
1db64e87 4702
fde55ea7 4703 return genlmsg_reply(skb, info);
1db64e87
EBE		 4704
4705nla_put_failure:
4706 nlmsg_free(skb);
4707 return err;
4708}
4709
e44ef4e4
AL		 4710static int devlink_fmsg_dumpit(struct devlink_fmsg *fmsg, struct sk_buff *skb,
4711 struct netlink_callback *cb,
4712 enum devlink_command cmd)
4713{
4714 int index = cb->args[0];
4715 int tmp_index = index;
4716 void *hdr;
4717 int err;
4718
4719 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
4720 &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI, cmd);
4721 if (!hdr) {
4722 err = -EMSGSIZE;
4723 goto nla_put_failure;
4724 }
4725
4726 err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
4727 if ((err && err != -EMSGSIZE) || tmp_index == index)
4728 goto nla_put_failure;
4729
4730 cb->args[0] = index;
4731 genlmsg_end(skb, hdr);
4732 return skb->len;
4733
4734nla_put_failure:
4735 genlmsg_cancel(skb, hdr);
4736 return err;
4737}
4738
a0bdcc59
EBE		 4739struct devlink_health_reporter {
4740 struct list_head list;
4741 void *priv;
4742 const struct devlink_health_reporter_ops *ops;
4743 struct devlink *devlink;
c8e1da0b
EBE		 4744 struct devlink_fmsg *dump_fmsg;
4745 struct mutex dump_lock; /* lock parallel read/write from dump buffers */
a0bdcc59
EBE		 4746 u64 graceful_period;
4747 bool auto_recover;
4748 u8 health_state;
c8e1da0b 4749 u64 dump_ts;
d279505b 4750 u64 dump_real_ts;
c8e1da0b
EBE		 4751 u64 error_count;
4752 u64 recovery_count;
4753 u64 last_recovery_ts;
b587bdaf 4754 refcount_t refcount;
c8e1da0b
EBE		 4755};
4756
a0bdcc59
EBE		 4757void *
4758devlink_health_reporter_priv(struct devlink_health_reporter *reporter)
4759{
4760 return reporter->priv;
4761}
4762EXPORT_SYMBOL_GPL(devlink_health_reporter_priv);
4763
4764static struct devlink_health_reporter *
4765devlink_health_reporter_find_by_name(struct devlink *devlink,
4766 const char *reporter_name)
4767{
4768 struct devlink_health_reporter *reporter;
4769
b587bdaf 4770 lockdep_assert_held(&devlink->reporters_lock);
a0bdcc59
EBE		 4771 list_for_each_entry(reporter, &devlink->reporter_list, list)
4772 if (!strcmp(reporter->ops->name, reporter_name))
4773 return reporter;
4774 return NULL;
4775}
4776
4777/**
4778 * devlink_health_reporter_create - create devlink health reporter
4779 *
4780 * @devlink: devlink
4781 * @ops: ops
4782 * @graceful_period: to avoid recovery loops, in msecs
4783 * @auto_recover: auto recover when error occurs
4784 * @priv: priv
4785 */
4786struct devlink_health_reporter *
4787devlink_health_reporter_create(struct devlink *devlink,
4788 const struct devlink_health_reporter_ops *ops,
4789 u64 graceful_period, bool auto_recover,
4790 void *priv)
4791{
4792 struct devlink_health_reporter *reporter;
4793
b587bdaf 4794 mutex_lock(&devlink->reporters_lock);
a0bdcc59
EBE		 4795 if (devlink_health_reporter_find_by_name(devlink, ops->name)) {
4796 reporter = ERR_PTR(-EEXIST);
4797 goto unlock;
4798 }
4799
4800 if (WARN_ON(auto_recover && !ops->recover) ||
4801 WARN_ON(graceful_period && !ops->recover)) {
4802 reporter = ERR_PTR(-EINVAL);
4803 goto unlock;
4804 }
4805
4806 reporter = kzalloc(sizeof(*reporter), GFP_KERNEL);
4807 if (!reporter) {
4808 reporter = ERR_PTR(-ENOMEM);
4809 goto unlock;
4810 }
4811
4812 reporter->priv = priv;
4813 reporter->ops = ops;
4814 reporter->devlink = devlink;
4815 reporter->graceful_period = graceful_period;
4816 reporter->auto_recover = auto_recover;
c8e1da0b 4817 mutex_init(&reporter->dump_lock);
b587bdaf 4818 refcount_set(&reporter->refcount, 1);
a0bdcc59
EBE		 4819 list_add_tail(&reporter->list, &devlink->reporter_list);
4820unlock:
b587bdaf 4821 mutex_unlock(&devlink->reporters_lock);
a0bdcc59
EBE		 4822 return reporter;
4823}
4824EXPORT_SYMBOL_GPL(devlink_health_reporter_create);
4825
4826/**
4827 * devlink_health_reporter_destroy - destroy devlink health reporter
4828 *
4829 * @reporter: devlink health reporter to destroy
4830 */
4831void
4832devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
4833{
b587bdaf 4834 mutex_lock(&reporter->devlink->reporters_lock);
a0bdcc59 4835 list_del(&reporter->list);
b587bdaf
MS		 4836 mutex_unlock(&reporter->devlink->reporters_lock);
4837 while (refcount_read(&reporter->refcount) > 1)
4838 msleep(100);
375cf8c6 4839 mutex_destroy(&reporter->dump_lock);
c8e1da0b
EBE		 4840 if (reporter->dump_fmsg)
4841 devlink_fmsg_free(reporter->dump_fmsg);
a0bdcc59
EBE		 4842 kfree(reporter);
4843}
4844EXPORT_SYMBOL_GPL(devlink_health_reporter_destroy);
4845
6181e5cb
VG		 4846void
4847devlink_health_reporter_recovery_done(struct devlink_health_reporter *reporter)
4848{
4849 reporter->recovery_count++;
4850 reporter->last_recovery_ts = jiffies;
4851}
4852EXPORT_SYMBOL_GPL(devlink_health_reporter_recovery_done);
4853
c8e1da0b
EBE		 4854static int
4855devlink_health_reporter_recover(struct devlink_health_reporter *reporter,
e7a98105 4856 void *priv_ctx, struct netlink_ext_ack *extack)
c8e1da0b
EBE		 4857{
4858 int err;
4859
40281820
JP		 4860 if (reporter->health_state == DEVLINK_HEALTH_REPORTER_STATE_HEALTHY)
4861 return 0;
4862
c8e1da0b
EBE		 4863 if (!reporter->ops->recover)
4864 return -EOPNOTSUPP;
4865
e7a98105 4866 err = reporter->ops->recover(reporter, priv_ctx, extack);
c8e1da0b
EBE		 4867 if (err)
4868 return err;
4869
6181e5cb 4870 devlink_health_reporter_recovery_done(reporter);
c8e1da0b 4871 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_HEALTHY;
c8e1da0b
EBE		 4872
4873 return 0;
4874}
4875
4876static void
4877devlink_health_dump_clear(struct devlink_health_reporter *reporter)
4878{
4879 if (!reporter->dump_fmsg)
4880 return;
4881 devlink_fmsg_free(reporter->dump_fmsg);
4882 reporter->dump_fmsg = NULL;
4883}
4884
4885static int devlink_health_do_dump(struct devlink_health_reporter *reporter,
e7a98105
JP		 4886 void *priv_ctx,
4887 struct netlink_ext_ack *extack)
c8e1da0b
EBE		 4888{
4889 int err;
4890
4891 if (!reporter->ops->dump)
4892 return 0;
4893
4894 if (reporter->dump_fmsg)
4895 return 0;
4896
4897 reporter->dump_fmsg = devlink_fmsg_alloc();
4898 if (!reporter->dump_fmsg) {
4899 err = -ENOMEM;
4900 return err;
4901 }
4902
4903 err = devlink_fmsg_obj_nest_start(reporter->dump_fmsg);
4904 if (err)
4905 goto dump_err;
4906
4907 err = reporter->ops->dump(reporter, reporter->dump_fmsg,
e7a98105 4908 priv_ctx, extack);
c8e1da0b
EBE		 4909 if (err)
4910 goto dump_err;
4911
4912 err = devlink_fmsg_obj_nest_end(reporter->dump_fmsg);
4913 if (err)
4914 goto dump_err;
4915
4916 reporter->dump_ts = jiffies;
d279505b 4917 reporter->dump_real_ts = ktime_get_real_ns();
c8e1da0b
EBE		 4918
4919 return 0;
4920
4921dump_err:
4922 devlink_health_dump_clear(reporter);
4923 return err;
4924}
4925
4926int devlink_health_report(struct devlink_health_reporter *reporter,
4927 const char *msg, void *priv_ctx)
4928{
a0a21adb 4929 enum devlink_health_reporter_state prev_health_state;
c8e1da0b
EBE		 4930 struct devlink *devlink = reporter->devlink;
4931
4932 /* write a log message of the current error */
4933 WARN_ON(!msg);
4934 trace_devlink_health_report(devlink, reporter->ops->name, msg);
4935 reporter->error_count++;
a0a21adb
EBE		 4936 prev_health_state = reporter->health_state;
4937 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
c8e1da0b
EBE		 4938
4939 /* abort if the previous error wasn't recovered */
4940 if (reporter->auto_recover &&
a0a21adb 4941 (prev_health_state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY ||
c8e1da0b
EBE		 4942 jiffies - reporter->last_recovery_ts <
4943 msecs_to_jiffies(reporter->graceful_period))) {
4944 trace_devlink_health_recover_aborted(devlink,
4945 reporter->ops->name,
4946 reporter->health_state,
4947 jiffies -
4948 reporter->last_recovery_ts);
4949 return -ECANCELED;
4950 }
4951
4952 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
4953
4954 mutex_lock(&reporter->dump_lock);
4955 /* store current dump of current error, for later analysis */
e7a98105 4956 devlink_health_do_dump(reporter, priv_ctx, NULL);
c8e1da0b
EBE		 4957 mutex_unlock(&reporter->dump_lock);
4958
4959 if (reporter->auto_recover)
e7a98105
JP		 4960 return devlink_health_reporter_recover(reporter,
4961 priv_ctx, NULL);
c8e1da0b
EBE		 4962
4963 return 0;
4964}
4965EXPORT_SYMBOL_GPL(devlink_health_report);
4966
7afe335a 4967static struct devlink_health_reporter *
e44ef4e4
AL		 4968devlink_health_reporter_get_from_attrs(struct devlink *devlink,
4969 struct nlattr **attrs)
7afe335a 4970{
b587bdaf 4971 struct devlink_health_reporter *reporter;
7afe335a
EBE		 4972 char *reporter_name;
4973
e44ef4e4 4974 if (!attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME])
7afe335a
EBE		 4975 return NULL;
4976
e44ef4e4 4977 reporter_name = nla_data(attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME]);
b587bdaf
MS		 4978 mutex_lock(&devlink->reporters_lock);
4979 reporter = devlink_health_reporter_find_by_name(devlink, reporter_name);
4980 if (reporter)
4981 refcount_inc(&reporter->refcount);
4982 mutex_unlock(&devlink->reporters_lock);
4983 return reporter;
4984}
4985
e44ef4e4
AL		 4986static struct devlink_health_reporter *
4987devlink_health_reporter_get_from_info(struct devlink *devlink,
4988 struct genl_info *info)
4989{
4990 return devlink_health_reporter_get_from_attrs(devlink, info->attrs);
4991}
4992
4993static struct devlink_health_reporter *
4994devlink_health_reporter_get_from_cb(struct netlink_callback *cb)
4995{
ee85da53 4996 const struct genl_dumpit_info *info = genl_dumpit_info(cb);
e44ef4e4 4997 struct devlink_health_reporter *reporter;
ee85da53 4998 struct nlattr **attrs = info->attrs;
e44ef4e4 4999 struct devlink *devlink;
e44ef4e4
AL		 5000
5001 mutex_lock(&devlink_mutex);
5002 devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
5003 if (IS_ERR(devlink))
5004 goto unlock;
5005
5006 reporter = devlink_health_reporter_get_from_attrs(devlink, attrs);
5007 mutex_unlock(&devlink_mutex);
e44ef4e4
AL		 5008 return reporter;
5009unlock:
5010 mutex_unlock(&devlink_mutex);
e44ef4e4
AL		 5011 return NULL;
5012}
5013
b587bdaf
MS		 5014static void
5015devlink_health_reporter_put(struct devlink_health_reporter *reporter)
5016{
5017 refcount_dec(&reporter->refcount);
7afe335a
EBE		 5018}
5019
5020static int
5021devlink_nl_health_reporter_fill(struct sk_buff *msg,
5022 struct devlink *devlink,
5023 struct devlink_health_reporter *reporter,
5024 enum devlink_command cmd, u32 portid,
5025 u32 seq, int flags)
5026{
5027 struct nlattr *reporter_attr;
5028 void *hdr;
5029
5030 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
5031 if (!hdr)
5032 return -EMSGSIZE;
5033
5034 if (devlink_nl_put_handle(msg, devlink))
5035 goto genlmsg_cancel;
5036
ae0be8de
MK		 5037 reporter_attr = nla_nest_start_noflag(msg,
5038 DEVLINK_ATTR_HEALTH_REPORTER);
7afe335a
EBE		 5039 if (!reporter_attr)
5040 goto genlmsg_cancel;
5041 if (nla_put_string(msg, DEVLINK_ATTR_HEALTH_REPORTER_NAME,
5042 reporter->ops->name))
5043 goto reporter_nest_cancel;
5044 if (nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_STATE,
5045 reporter->health_state))
5046 goto reporter_nest_cancel;
54719527 5047 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_ERR_COUNT,
7afe335a
EBE		 5048 reporter->error_count, DEVLINK_ATTR_PAD))
5049 goto reporter_nest_cancel;
54719527 5050 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_RECOVER_COUNT,
7afe335a
EBE		 5051 reporter->recovery_count, DEVLINK_ATTR_PAD))
5052 goto reporter_nest_cancel;
574b1e1f
AL		 5053 if (reporter->ops->recover &&
5054 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD,
7afe335a
EBE		 5055 reporter->graceful_period,
5056 DEVLINK_ATTR_PAD))
5057 goto reporter_nest_cancel;
574b1e1f
AL		 5058 if (reporter->ops->recover &&
5059 nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER,
7afe335a
EBE		 5060 reporter->auto_recover))
5061 goto reporter_nest_cancel;
5062 if (reporter->dump_fmsg &&
5063 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS,
5064 jiffies_to_msecs(reporter->dump_ts),
5065 DEVLINK_ATTR_PAD))
5066 goto reporter_nest_cancel;
d279505b
AL		 5067 if (reporter->dump_fmsg &&
5068 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS_NS,
5069 reporter->dump_real_ts, DEVLINK_ATTR_PAD))
5070 goto reporter_nest_cancel;
7afe335a
EBE		 5071
5072 nla_nest_end(msg, reporter_attr);
5073 genlmsg_end(msg, hdr);
5074 return 0;
5075
5076reporter_nest_cancel:
5077 nla_nest_end(msg, reporter_attr);
5078genlmsg_cancel:
5079 genlmsg_cancel(msg, hdr);
5080 return -EMSGSIZE;
5081}
5082
97ff3bd3
VG		 5083static void devlink_recover_notify(struct devlink_health_reporter *reporter,
5084 enum devlink_command cmd)
5085{
5086 struct sk_buff *msg;
5087 int err;
5088
5089 WARN_ON(cmd != DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
5090
5091 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5092 if (!msg)
5093 return;
5094
5095 err = devlink_nl_health_reporter_fill(msg, reporter->devlink,
5096 reporter, cmd, 0, 0, 0);
5097 if (err) {
5098 nlmsg_free(msg);
5099 return;
5100 }
5101
5102 genlmsg_multicast_netns(&devlink_nl_family,
5103 devlink_net(reporter->devlink),
5104 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
5105}
5106
5107void
5108devlink_health_reporter_state_update(struct devlink_health_reporter *reporter,
5109 enum devlink_health_reporter_state state)
5110{
5111 if (WARN_ON(state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY &&
5112 state != DEVLINK_HEALTH_REPORTER_STATE_ERROR))
5113 return;
5114
5115 if (reporter->health_state == state)
5116 return;
5117
5118 reporter->health_state = state;
5119 trace_devlink_health_reporter_state_update(reporter->devlink,
5120 reporter->ops->name, state);
5121 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
5122}
5123EXPORT_SYMBOL_GPL(devlink_health_reporter_state_update);
5124
7afe335a
EBE		 5125static int devlink_nl_cmd_health_reporter_get_doit(struct sk_buff *skb,
5126 struct genl_info *info)
5127{
5128 struct devlink *devlink = info->user_ptr[0];
5129 struct devlink_health_reporter *reporter;
5130 struct sk_buff *msg;
5131 int err;
5132
5133 reporter = devlink_health_reporter_get_from_info(devlink, info);
5134 if (!reporter)
5135 return -EINVAL;
5136
5137 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
b587bdaf
MS		 5138 if (!msg) {
5139 err = -ENOMEM;
5140 goto out;
5141 }
7afe335a
EBE		 5142
5143 err = devlink_nl_health_reporter_fill(msg, devlink, reporter,
5144 DEVLINK_CMD_HEALTH_REPORTER_GET,
5145 info->snd_portid, info->snd_seq,
5146 0);
5147 if (err) {
5148 nlmsg_free(msg);
b587bdaf 5149 goto out;
7afe335a
EBE		 5150 }
5151
b587bdaf
MS		 5152 err = genlmsg_reply(msg, info);
5153out:
5154 devlink_health_reporter_put(reporter);
5155 return err;
7afe335a
EBE		 5156}
5157
5158static int
5159devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg,
5160 struct netlink_callback *cb)
5161{
5162 struct devlink_health_reporter *reporter;
5163 struct devlink *devlink;
5164 int start = cb->args[0];
5165 int idx = 0;
5166 int err;
5167
5168 mutex_lock(&devlink_mutex);
5169 list_for_each_entry(devlink, &devlink_list, list) {
5170 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
5171 continue;
b587bdaf 5172 mutex_lock(&devlink->reporters_lock);
7afe335a
EBE		 5173 list_for_each_entry(reporter, &devlink->reporter_list,
5174 list) {
5175 if (idx < start) {
5176 idx++;
5177 continue;
5178 }
5179 err = devlink_nl_health_reporter_fill(msg, devlink,
5180 reporter,
5181 DEVLINK_CMD_HEALTH_REPORTER_GET,
5182 NETLINK_CB(cb->skb).portid,
5183 cb->nlh->nlmsg_seq,
5184 NLM_F_MULTI);
5185 if (err) {
b587bdaf 5186 mutex_unlock(&devlink->reporters_lock);
7afe335a
EBE		 5187 goto out;
5188 }
5189 idx++;
5190 }
b587bdaf 5191 mutex_unlock(&devlink->reporters_lock);
7afe335a
EBE		 5192 }
5193out:
5194 mutex_unlock(&devlink_mutex);
5195
5196 cb->args[0] = idx;
5197 return msg->len;
5198}
5199
a1e55ec0
EBE		 5200static int
5201devlink_nl_cmd_health_reporter_set_doit(struct sk_buff *skb,
5202 struct genl_info *info)
5203{
5204 struct devlink *devlink = info->user_ptr[0];
5205 struct devlink_health_reporter *reporter;
b587bdaf 5206 int err;
a1e55ec0
EBE		 5207
5208 reporter = devlink_health_reporter_get_from_info(devlink, info);
5209 if (!reporter)
5210 return -EINVAL;
5211
5212 if (!reporter->ops->recover &&
5213 (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] ||
b587bdaf
MS		 5214 info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])) {
5215 err = -EOPNOTSUPP;
5216 goto out;
5217 }
a1e55ec0
EBE		 5218
5219 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD])
5220 reporter->graceful_period =
5221 nla_get_u64(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD]);
5222
5223 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])
5224 reporter->auto_recover =
5225 nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER]);
5226
b587bdaf 5227 devlink_health_reporter_put(reporter);
a1e55ec0 5228 return 0;
b587bdaf
MS		 5229out:
5230 devlink_health_reporter_put(reporter);
5231 return err;
a1e55ec0
EBE		 5232}
5233
20a0943a
EBE		 5234static int devlink_nl_cmd_health_reporter_recover_doit(struct sk_buff *skb,
5235 struct genl_info *info)
5236{
5237 struct devlink *devlink = info->user_ptr[0];
5238 struct devlink_health_reporter *reporter;
b587bdaf 5239 int err;
20a0943a
EBE		 5240
5241 reporter = devlink_health_reporter_get_from_info(devlink, info);
5242 if (!reporter)
5243 return -EINVAL;
5244
e7a98105 5245 err = devlink_health_reporter_recover(reporter, NULL, info->extack);
b587bdaf
MS		 5246
5247 devlink_health_reporter_put(reporter);
5248 return err;
20a0943a
EBE		 5249}
5250
fca42a27
EBE		 5251static int devlink_nl_cmd_health_reporter_diagnose_doit(struct sk_buff *skb,
5252 struct genl_info *info)
5253{
5254 struct devlink *devlink = info->user_ptr[0];
5255 struct devlink_health_reporter *reporter;
5256 struct devlink_fmsg *fmsg;
5257 int err;
5258
5259 reporter = devlink_health_reporter_get_from_info(devlink, info);
5260 if (!reporter)
5261 return -EINVAL;
5262
b587bdaf
MS		 5263 if (!reporter->ops->diagnose) {
5264 devlink_health_reporter_put(reporter);
fca42a27 5265 return -EOPNOTSUPP;
b587bdaf 5266 }
fca42a27
EBE		 5267
5268 fmsg = devlink_fmsg_alloc();
b587bdaf
MS		 5269 if (!fmsg) {
5270 devlink_health_reporter_put(reporter);
fca42a27 5271 return -ENOMEM;
b587bdaf 5272 }
fca42a27
EBE		 5273
5274 err = devlink_fmsg_obj_nest_start(fmsg);
5275 if (err)
5276 goto out;
5277
e7a98105 5278 err = reporter->ops->diagnose(reporter, fmsg, info->extack);
fca42a27
EBE		 5279 if (err)
5280 goto out;
5281
5282 err = devlink_fmsg_obj_nest_end(fmsg);
5283 if (err)
5284 goto out;
5285
5286 err = devlink_fmsg_snd(fmsg, info,
5287 DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE, 0);
5288
5289out:
5290 devlink_fmsg_free(fmsg);
b587bdaf 5291 devlink_health_reporter_put(reporter);
fca42a27
EBE		 5292 return err;
5293}
5294
e44ef4e4
AL		 5295static int
5296devlink_nl_cmd_health_reporter_dump_get_dumpit(struct sk_buff *skb,
5297 struct netlink_callback *cb)
35455e23 5298{
35455e23 5299 struct devlink_health_reporter *reporter;
e44ef4e4 5300 u64 start = cb->args[0];
35455e23
EBE		 5301 int err;
5302
e44ef4e4 5303 reporter = devlink_health_reporter_get_from_cb(cb);
35455e23
EBE		 5304 if (!reporter)
5305 return -EINVAL;
5306
b587bdaf 5307 if (!reporter->ops->dump) {
e44ef4e4
AL		 5308 err = -EOPNOTSUPP;
5309 goto out;
b587bdaf 5310 }
35455e23 5311 mutex_lock(&reporter->dump_lock);
e44ef4e4 5312 if (!start) {
e7a98105 5313 err = devlink_health_do_dump(reporter, NULL, cb->extack);
e44ef4e4
AL		 5314 if (err)
5315 goto unlock;
5316 cb->args[1] = reporter->dump_ts;
5317 }
5318 if (!reporter->dump_fmsg || cb->args[1] != reporter->dump_ts) {
5319 NL_SET_ERR_MSG_MOD(cb->extack, "Dump trampled, please retry");
5320 err = -EAGAIN;
5321 goto unlock;
5322 }
35455e23 5323
e44ef4e4
AL		 5324 err = devlink_fmsg_dumpit(reporter->dump_fmsg, skb, cb,
5325 DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET);
5326unlock:
35455e23 5327 mutex_unlock(&reporter->dump_lock);
e44ef4e4 5328out:
b587bdaf 5329 devlink_health_reporter_put(reporter);
35455e23
EBE		 5330 return err;
5331}
5332
5333static int
5334devlink_nl_cmd_health_reporter_dump_clear_doit(struct sk_buff *skb,
5335 struct genl_info *info)
5336{
5337 struct devlink *devlink = info->user_ptr[0];
5338 struct devlink_health_reporter *reporter;
5339
5340 reporter = devlink_health_reporter_get_from_info(devlink, info);
5341 if (!reporter)
5342 return -EINVAL;
5343
b587bdaf
MS		 5344 if (!reporter->ops->dump) {
5345 devlink_health_reporter_put(reporter);
35455e23 5346 return -EOPNOTSUPP;
b587bdaf 5347 }
35455e23
EBE		 5348
5349 mutex_lock(&reporter->dump_lock);
5350 devlink_health_dump_clear(reporter);
5351 mutex_unlock(&reporter->dump_lock);
b587bdaf 5352 devlink_health_reporter_put(reporter);
35455e23
EBE		 5353 return 0;
5354}
5355
0f420b6c
IS		 5356struct devlink_stats {
5357 u64 rx_bytes;
5358 u64 rx_packets;
5359 struct u64_stats_sync syncp;
5360};
5361
5362/**
5363 * struct devlink_trap_group_item - Packet trap group attributes.
5364 * @group: Immutable packet trap group attributes.
5365 * @refcount: Number of trap items using the group.
5366 * @list: trap_group_list member.
5367 * @stats: Trap group statistics.
5368 *
5369 * Describes packet trap group attributes. Created by devlink during trap
5370 * registration.
5371 */
5372struct devlink_trap_group_item {
5373 const struct devlink_trap_group *group;
5374 refcount_t refcount;
5375 struct list_head list;
5376 struct devlink_stats __percpu *stats;
5377};
5378
5379/**
5380 * struct devlink_trap_item - Packet trap attributes.
5381 * @trap: Immutable packet trap attributes.
5382 * @group_item: Associated group item.
5383 * @list: trap_list member.
5384 * @action: Trap action.
5385 * @stats: Trap statistics.
5386 * @priv: Driver private information.
5387 *
5388 * Describes both mutable and immutable packet trap attributes. Created by
5389 * devlink during trap registration and used for all trap related operations.
5390 */
5391struct devlink_trap_item {
5392 const struct devlink_trap *trap;
5393 struct devlink_trap_group_item *group_item;
5394 struct list_head list;
5395 enum devlink_trap_action action;
5396 struct devlink_stats __percpu *stats;
5397 void *priv;
5398};
5399
5400static struct devlink_trap_item *
5401devlink_trap_item_lookup(struct devlink *devlink, const char *name)
5402{
5403 struct devlink_trap_item *trap_item;
5404
5405 list_for_each_entry(trap_item, &devlink->trap_list, list) {
5406 if (!strcmp(trap_item->trap->name, name))
5407 return trap_item;
5408 }
5409
5410 return NULL;
5411}
5412
5413static struct devlink_trap_item *
5414devlink_trap_item_get_from_info(struct devlink *devlink,
5415 struct genl_info *info)
5416{
5417 struct nlattr *attr;
5418
5419 if (!info->attrs[DEVLINK_ATTR_TRAP_NAME])
5420 return NULL;
5421 attr = info->attrs[DEVLINK_ATTR_TRAP_NAME];
5422
5423 return devlink_trap_item_lookup(devlink, nla_data(attr));
5424}
5425
5426static int
5427devlink_trap_action_get_from_info(struct genl_info *info,
5428 enum devlink_trap_action *p_trap_action)
5429{
5430 u8 val;
5431
5432 val = nla_get_u8(info->attrs[DEVLINK_ATTR_TRAP_ACTION]);
5433 switch (val) {
5434 case DEVLINK_TRAP_ACTION_DROP: /* fall-through */
5435 case DEVLINK_TRAP_ACTION_TRAP:
5436 *p_trap_action = val;
5437 break;
5438 default:
5439 return -EINVAL;
5440 }
5441
5442 return 0;
5443}
5444
5445static int devlink_trap_metadata_put(struct sk_buff *msg,
5446 const struct devlink_trap *trap)
5447{
5448 struct nlattr *attr;
5449
5450 attr = nla_nest_start(msg, DEVLINK_ATTR_TRAP_METADATA);
5451 if (!attr)
5452 return -EMSGSIZE;
5453
5454 if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_IN_PORT) &&
5455 nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_IN_PORT))
5456 goto nla_put_failure;
5457
5458 nla_nest_end(msg, attr);
5459
5460 return 0;
5461
5462nla_put_failure:
5463 nla_nest_cancel(msg, attr);
5464 return -EMSGSIZE;
5465}
5466
5467static void devlink_trap_stats_read(struct devlink_stats __percpu *trap_stats,
5468 struct devlink_stats *stats)
5469{
5470 int i;
5471
5472 memset(stats, 0, sizeof(*stats));
5473 for_each_possible_cpu(i) {
5474 struct devlink_stats *cpu_stats;
5475 u64 rx_packets, rx_bytes;
5476 unsigned int start;
5477
5478 cpu_stats = per_cpu_ptr(trap_stats, i);
5479 do {
5480 start = u64_stats_fetch_begin_irq(&cpu_stats->syncp);
5481 rx_packets = cpu_stats->rx_packets;
5482 rx_bytes = cpu_stats->rx_bytes;
5483 } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start));
5484
5485 stats->rx_packets += rx_packets;
5486 stats->rx_bytes += rx_bytes;
5487 }
5488}
5489
5490static int devlink_trap_stats_put(struct sk_buff *msg,
5491 struct devlink_stats __percpu *trap_stats)
5492{
5493 struct devlink_stats stats;
5494 struct nlattr *attr;
5495
5496 devlink_trap_stats_read(trap_stats, &stats);
5497
5498 attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
5499 if (!attr)
5500 return -EMSGSIZE;
5501
5502 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_PACKETS,
5503 stats.rx_packets, DEVLINK_ATTR_PAD))
5504 goto nla_put_failure;
5505
5506 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_BYTES,
5507 stats.rx_bytes, DEVLINK_ATTR_PAD))
5508 goto nla_put_failure;
5509
5510 nla_nest_end(msg, attr);
5511
5512 return 0;
5513
5514nla_put_failure:
5515 nla_nest_cancel(msg, attr);
5516 return -EMSGSIZE;
5517}
5518
5519static int devlink_nl_trap_fill(struct sk_buff *msg, struct devlink *devlink,
5520 const struct devlink_trap_item *trap_item,
5521 enum devlink_command cmd, u32 portid, u32 seq,
5522 int flags)
5523{
5524 struct devlink_trap_group_item *group_item = trap_item->group_item;
5525 void *hdr;
5526 int err;
5527
5528 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
5529 if (!hdr)
5530 return -EMSGSIZE;
5531
5532 if (devlink_nl_put_handle(msg, devlink))
5533 goto nla_put_failure;
5534
5535 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
5536 group_item->group->name))
5537 goto nla_put_failure;
5538
5539 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_NAME, trap_item->trap->name))
5540 goto nla_put_failure;
5541
5542 if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_TYPE, trap_item->trap->type))
5543 goto nla_put_failure;
5544
5545 if (trap_item->trap->generic &&
5546 nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
5547 goto nla_put_failure;
5548
5549 if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_ACTION, trap_item->action))
5550 goto nla_put_failure;
5551
5552 err = devlink_trap_metadata_put(msg, trap_item->trap);
5553 if (err)
5554 goto nla_put_failure;
5555
5556 err = devlink_trap_stats_put(msg, trap_item->stats);
5557 if (err)
5558 goto nla_put_failure;
5559
5560 genlmsg_end(msg, hdr);
5561
5562 return 0;
5563
5564nla_put_failure:
5565 genlmsg_cancel(msg, hdr);
5566 return -EMSGSIZE;
5567}
5568
5569static int devlink_nl_cmd_trap_get_doit(struct sk_buff *skb,
5570 struct genl_info *info)
5571{
5572 struct netlink_ext_ack *extack = info->extack;
5573 struct devlink *devlink = info->user_ptr[0];
5574 struct devlink_trap_item *trap_item;
5575 struct sk_buff *msg;
5576 int err;
5577
5578 if (list_empty(&devlink->trap_list))
5579 return -EOPNOTSUPP;
5580
5581 trap_item = devlink_trap_item_get_from_info(devlink, info);
5582 if (!trap_item) {
5583 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
5584 return -ENOENT;
5585 }
5586
5587 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5588 if (!msg)
5589 return -ENOMEM;
5590
5591 err = devlink_nl_trap_fill(msg, devlink, trap_item,
5592 DEVLINK_CMD_TRAP_NEW, info->snd_portid,
5593 info->snd_seq, 0);
5594 if (err)
5595 goto err_trap_fill;
5596
5597 return genlmsg_reply(msg, info);
5598
5599err_trap_fill:
5600 nlmsg_free(msg);
5601 return err;
5602}
5603
5604static int devlink_nl_cmd_trap_get_dumpit(struct sk_buff *msg,
5605 struct netlink_callback *cb)
5606{
5607 struct devlink_trap_item *trap_item;
5608 struct devlink *devlink;
5609 int start = cb->args[0];
5610 int idx = 0;
5611 int err;
5612
5613 mutex_lock(&devlink_mutex);
5614 list_for_each_entry(devlink, &devlink_list, list) {
5615 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
5616 continue;
5617 mutex_lock(&devlink->lock);
5618 list_for_each_entry(trap_item, &devlink->trap_list, list) {
5619 if (idx < start) {
5620 idx++;
5621 continue;
5622 }
5623 err = devlink_nl_trap_fill(msg, devlink, trap_item,
5624 DEVLINK_CMD_TRAP_NEW,
5625 NETLINK_CB(cb->skb).portid,
5626 cb->nlh->nlmsg_seq,
5627 NLM_F_MULTI);
5628 if (err) {
5629 mutex_unlock(&devlink->lock);
5630 goto out;
5631 }
5632 idx++;
5633 }
5634 mutex_unlock(&devlink->lock);
5635 }
5636out:
5637 mutex_unlock(&devlink_mutex);
5638
5639 cb->args[0] = idx;
5640 return msg->len;
5641}
5642
5643static int __devlink_trap_action_set(struct devlink *devlink,
5644 struct devlink_trap_item *trap_item,
5645 enum devlink_trap_action trap_action,
5646 struct netlink_ext_ack *extack)
5647{
5648 int err;
5649
5650 if (trap_item->action != trap_action &&
5651 trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP) {
5652 NL_SET_ERR_MSG_MOD(extack, "Cannot change action of non-drop traps. Skipping");
5653 return 0;
5654 }
5655
5656 err = devlink->ops->trap_action_set(devlink, trap_item->trap,
5657 trap_action);
5658 if (err)
5659 return err;
5660
5661 trap_item->action = trap_action;
5662
5663 return 0;
5664}
5665
5666static int devlink_trap_action_set(struct devlink *devlink,
5667 struct devlink_trap_item *trap_item,
5668 struct genl_info *info)
5669{
5670 enum devlink_trap_action trap_action;
5671 int err;
5672
5673 if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
5674 return 0;
5675
5676 err = devlink_trap_action_get_from_info(info, &trap_action);
5677 if (err) {
5678 NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
5679 return -EINVAL;
5680 }
5681
5682 return __devlink_trap_action_set(devlink, trap_item, trap_action,
5683 info->extack);
5684}
5685
5686static int devlink_nl_cmd_trap_set_doit(struct sk_buff *skb,
5687 struct genl_info *info)
5688{
5689 struct netlink_ext_ack *extack = info->extack;
5690 struct devlink *devlink = info->user_ptr[0];
5691 struct devlink_trap_item *trap_item;
5692 int err;
5693
5694 if (list_empty(&devlink->trap_list))
5695 return -EOPNOTSUPP;
5696
5697 trap_item = devlink_trap_item_get_from_info(devlink, info);
5698 if (!trap_item) {
5699 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
5700 return -ENOENT;
5701 }
5702
5703 err = devlink_trap_action_set(devlink, trap_item, info);
5704 if (err)
5705 return err;
5706
5707 return 0;
5708}
5709
5710static struct devlink_trap_group_item *
5711devlink_trap_group_item_lookup(struct devlink *devlink, const char *name)
5712{
5713 struct devlink_trap_group_item *group_item;
5714
5715 list_for_each_entry(group_item, &devlink->trap_group_list, list) {
5716 if (!strcmp(group_item->group->name, name))
5717 return group_item;
5718 }
5719
5720 return NULL;
5721}
5722
5723static struct devlink_trap_group_item *
5724devlink_trap_group_item_get_from_info(struct devlink *devlink,
5725 struct genl_info *info)
5726{
5727 char *name;
5728
5729 if (!info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME])
5730 return NULL;
5731 name = nla_data(info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME]);
5732
5733 return devlink_trap_group_item_lookup(devlink, name);
5734}
5735
5736static int
5737devlink_nl_trap_group_fill(struct sk_buff *msg, struct devlink *devlink,
5738 const struct devlink_trap_group_item *group_item,
5739 enum devlink_command cmd, u32 portid, u32 seq,
5740 int flags)
5741{
5742 void *hdr;
5743 int err;
5744
5745 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
5746 if (!hdr)
5747 return -EMSGSIZE;
5748
5749 if (devlink_nl_put_handle(msg, devlink))
5750 goto nla_put_failure;
5751
5752 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
5753 group_item->group->name))
5754 goto nla_put_failure;
5755
5756 if (group_item->group->generic &&
5757 nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
5758 goto nla_put_failure;
5759
5760 err = devlink_trap_stats_put(msg, group_item->stats);
5761 if (err)
5762 goto nla_put_failure;
5763
5764 genlmsg_end(msg, hdr);
5765
5766 return 0;
5767
5768nla_put_failure:
5769 genlmsg_cancel(msg, hdr);
5770 return -EMSGSIZE;
5771}
5772
5773static int devlink_nl_cmd_trap_group_get_doit(struct sk_buff *skb,
5774 struct genl_info *info)
5775{
5776 struct netlink_ext_ack *extack = info->extack;
5777 struct devlink *devlink = info->user_ptr[0];
5778 struct devlink_trap_group_item *group_item;
5779 struct sk_buff *msg;
5780 int err;
5781
5782 if (list_empty(&devlink->trap_group_list))
5783 return -EOPNOTSUPP;
5784
5785 group_item = devlink_trap_group_item_get_from_info(devlink, info);
5786 if (!group_item) {
5787 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
5788 return -ENOENT;
5789 }
5790
5791 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5792 if (!msg)
5793 return -ENOMEM;
5794
5795 err = devlink_nl_trap_group_fill(msg, devlink, group_item,
5796 DEVLINK_CMD_TRAP_GROUP_NEW,
5797 info->snd_portid, info->snd_seq, 0);
5798 if (err)
5799 goto err_trap_group_fill;
5800
5801 return genlmsg_reply(msg, info);
5802
5803err_trap_group_fill:
5804 nlmsg_free(msg);
5805 return err;
5806}
5807
5808static int devlink_nl_cmd_trap_group_get_dumpit(struct sk_buff *msg,
5809 struct netlink_callback *cb)
5810{
5811 enum devlink_command cmd = DEVLINK_CMD_TRAP_GROUP_NEW;
5812 struct devlink_trap_group_item *group_item;
5813 u32 portid = NETLINK_CB(cb->skb).portid;
5814 struct devlink *devlink;
5815 int start = cb->args[0];
5816 int idx = 0;
5817 int err;
5818
5819 mutex_lock(&devlink_mutex);
5820 list_for_each_entry(devlink, &devlink_list, list) {
5821 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
5822 continue;
5823 mutex_lock(&devlink->lock);
5824 list_for_each_entry(group_item, &devlink->trap_group_list,
5825 list) {
5826 if (idx < start) {
5827 idx++;
5828 continue;
5829 }
5830 err = devlink_nl_trap_group_fill(msg, devlink,
5831 group_item, cmd,
5832 portid,
5833 cb->nlh->nlmsg_seq,
5834 NLM_F_MULTI);
5835 if (err) {
5836 mutex_unlock(&devlink->lock);
5837 goto out;
5838 }
5839 idx++;
5840 }
5841 mutex_unlock(&devlink->lock);
5842 }
5843out:
5844 mutex_unlock(&devlink_mutex);
5845
5846 cb->args[0] = idx;
5847 return msg->len;
5848}
5849
5850static int
5851__devlink_trap_group_action_set(struct devlink *devlink,
5852 struct devlink_trap_group_item *group_item,
5853 enum devlink_trap_action trap_action,
5854 struct netlink_ext_ack *extack)
5855{
5856 const char *group_name = group_item->group->name;
5857 struct devlink_trap_item *trap_item;
5858 int err;
5859
5860 list_for_each_entry(trap_item, &devlink->trap_list, list) {
5861 if (strcmp(trap_item->trap->group.name, group_name))
5862 continue;
5863 err = __devlink_trap_action_set(devlink, trap_item,
5864 trap_action, extack);
5865 if (err)
5866 return err;
5867 }
5868
5869 return 0;
5870}
5871
5872static int
5873devlink_trap_group_action_set(struct devlink *devlink,
5874 struct devlink_trap_group_item *group_item,
5875 struct genl_info *info)
5876{
5877 enum devlink_trap_action trap_action;
5878 int err;
5879
5880 if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
5881 return 0;
5882
5883 err = devlink_trap_action_get_from_info(info, &trap_action);
5884 if (err) {
5885 NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
5886 return -EINVAL;
5887 }
5888
5889 err = __devlink_trap_group_action_set(devlink, group_item, trap_action,
5890 info->extack);
5891 if (err)
5892 return err;
5893
5894 return 0;
5895}
5896
5897static int devlink_nl_cmd_trap_group_set_doit(struct sk_buff *skb,
5898 struct genl_info *info)
5899{
5900 struct netlink_ext_ack *extack = info->extack;
5901 struct devlink *devlink = info->user_ptr[0];
5902 struct devlink_trap_group_item *group_item;
5903 int err;
5904
5905 if (list_empty(&devlink->trap_group_list))
5906 return -EOPNOTSUPP;
5907
5908 group_item = devlink_trap_group_item_get_from_info(devlink, info);
5909 if (!group_item) {
5910 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
5911 return -ENOENT;
5912 }
5913
5914 err = devlink_trap_group_action_set(devlink, group_item, info);
5915 if (err)
5916 return err;
5917
5918 return 0;
5919}
5920
bfcd3a46
JP		 5921static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = {
5922 [DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING },
5923 [DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING },
5924 [DEVLINK_ATTR_PORT_INDEX] = { .type = NLA_U32 },
5925 [DEVLINK_ATTR_PORT_TYPE] = { .type = NLA_U16 },
5926 [DEVLINK_ATTR_PORT_SPLIT_COUNT] = { .type = NLA_U32 },
bf797471
JP		 5927 [DEVLINK_ATTR_SB_INDEX] = { .type = NLA_U32 },
5928 [DEVLINK_ATTR_SB_POOL_INDEX] = { .type = NLA_U16 },
5929 [DEVLINK_ATTR_SB_POOL_TYPE] = { .type = NLA_U8 },
5930 [DEVLINK_ATTR_SB_POOL_SIZE] = { .type = NLA_U32 },
5931 [DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE] = { .type = NLA_U8 },
5932 [DEVLINK_ATTR_SB_THRESHOLD] = { .type = NLA_U32 },
5933 [DEVLINK_ATTR_SB_TC_INDEX] = { .type = NLA_U16 },
08f4b591 5934 [DEVLINK_ATTR_ESWITCH_MODE] = { .type = NLA_U16 },
59bfde01 5935 [DEVLINK_ATTR_ESWITCH_INLINE_MODE] = { .type = NLA_U8 },
f43e9b06 5936 [DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = { .type = NLA_U8 },
1555d204
AS		 5937 [DEVLINK_ATTR_DPIPE_TABLE_NAME] = { .type = NLA_NUL_STRING },
5938 [DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED] = { .type = NLA_U8 },
d9f9b9a4
AS		 5939 [DEVLINK_ATTR_RESOURCE_ID] = { .type = NLA_U64},
5940 [DEVLINK_ATTR_RESOURCE_SIZE] = { .type = NLA_U64},
e3b7ca18
MS		 5941 [DEVLINK_ATTR_PARAM_NAME] = { .type = NLA_NUL_STRING },
5942 [DEVLINK_ATTR_PARAM_TYPE] = { .type = NLA_U8 },
5943 [DEVLINK_ATTR_PARAM_VALUE_CMODE] = { .type = NLA_U8 },
d8db7ea5 5944 [DEVLINK_ATTR_REGION_NAME] = { .type = NLA_NUL_STRING },
866319bb 5945 [DEVLINK_ATTR_REGION_SNAPSHOT_ID] = { .type = NLA_U32 },
7afe335a 5946 [DEVLINK_ATTR_HEALTH_REPORTER_NAME] = { .type = NLA_NUL_STRING },
a1e55ec0
EBE		 5947 [DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] = { .type = NLA_U64 },
5948 [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER] = { .type = NLA_U8 },
76726ccb
JK		 5949 [DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME] = { .type = NLA_NUL_STRING },
5950 [DEVLINK_ATTR_FLASH_UPDATE_COMPONENT] = { .type = NLA_NUL_STRING },
0f420b6c
IS		 5951 [DEVLINK_ATTR_TRAP_NAME] = { .type = NLA_NUL_STRING },
5952 [DEVLINK_ATTR_TRAP_ACTION] = { .type = NLA_U8 },
5953 [DEVLINK_ATTR_TRAP_GROUP_NAME] = { .type = NLA_NUL_STRING },
070c63f2
JP		 5954 [DEVLINK_ATTR_NETNS_PID] = { .type = NLA_U32 },
5955 [DEVLINK_ATTR_NETNS_FD] = { .type = NLA_U32 },
5956 [DEVLINK_ATTR_NETNS_ID] = { .type = NLA_U32 },
bfcd3a46
JP		 5957};
5958
5959static const struct genl_ops devlink_nl_ops[] = {
5960 {
5961 .cmd = DEVLINK_CMD_GET,
ef6243ac 5962 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46
JP		 5963 .doit = devlink_nl_cmd_get_doit,
5964 .dumpit = devlink_nl_cmd_get_dumpit,
1fc2257e 5965 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
bfcd3a46
JP		 5966 /* can be retrieved by unprivileged users */
5967 },
5968 {
5969 .cmd = DEVLINK_CMD_PORT_GET,
ef6243ac 5970 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46
JP		 5971 .doit = devlink_nl_cmd_port_get_doit,
5972 .dumpit = devlink_nl_cmd_port_get_dumpit,
bfcd3a46
JP		 5973 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
5974 /* can be retrieved by unprivileged users */
5975 },
5976 {
5977 .cmd = DEVLINK_CMD_PORT_SET,
ef6243ac 5978 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46 5979 .doit = devlink_nl_cmd_port_set_doit,
bfcd3a46
JP		 5980 .flags = GENL_ADMIN_PERM,
5981 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
5982 },
5983 {
5984 .cmd = DEVLINK_CMD_PORT_SPLIT,
ef6243ac 5985 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46 5986 .doit = devlink_nl_cmd_port_split_doit,
bfcd3a46 5987 .flags = GENL_ADMIN_PERM,
2406e7e5
AS		 5988 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
5989 DEVLINK_NL_FLAG_NO_LOCK,
bfcd3a46
JP		 5990 },
5991 {
5992 .cmd = DEVLINK_CMD_PORT_UNSPLIT,
ef6243ac 5993 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46 5994 .doit = devlink_nl_cmd_port_unsplit_doit,
bfcd3a46 5995 .flags = GENL_ADMIN_PERM,
2406e7e5
AS		 5996 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
5997 DEVLINK_NL_FLAG_NO_LOCK,
bfcd3a46 5998 },
bf797471
JP		 5999 {
6000 .cmd = DEVLINK_CMD_SB_GET,
ef6243ac 6001 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471
JP		 6002 .doit = devlink_nl_cmd_sb_get_doit,
6003 .dumpit = devlink_nl_cmd_sb_get_dumpit,
bf797471
JP		 6004 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6005 DEVLINK_NL_FLAG_NEED_SB,
6006 /* can be retrieved by unprivileged users */
6007 },
6008 {
6009 .cmd = DEVLINK_CMD_SB_POOL_GET,
ef6243ac 6010 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471
JP		 6011 .doit = devlink_nl_cmd_sb_pool_get_doit,
6012 .dumpit = devlink_nl_cmd_sb_pool_get_dumpit,
bf797471
JP		 6013 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6014 DEVLINK_NL_FLAG_NEED_SB,
6015 /* can be retrieved by unprivileged users */
6016 },
6017 {
6018 .cmd = DEVLINK_CMD_SB_POOL_SET,
ef6243ac 6019 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471 6020 .doit = devlink_nl_cmd_sb_pool_set_doit,
bf797471
JP		 6021 .flags = GENL_ADMIN_PERM,
6022 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6023 DEVLINK_NL_FLAG_NEED_SB,
6024 },
6025 {
6026 .cmd = DEVLINK_CMD_SB_PORT_POOL_GET,
ef6243ac 6027 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471
JP		 6028 .doit = devlink_nl_cmd_sb_port_pool_get_doit,
6029 .dumpit = devlink_nl_cmd_sb_port_pool_get_dumpit,
bf797471
JP		 6030 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
6031 DEVLINK_NL_FLAG_NEED_SB,
6032 /* can be retrieved by unprivileged users */
6033 },
6034 {
6035 .cmd = DEVLINK_CMD_SB_PORT_POOL_SET,
ef6243ac 6036 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471 6037 .doit = devlink_nl_cmd_sb_port_pool_set_doit,
bf797471
JP		 6038 .flags = GENL_ADMIN_PERM,
6039 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
6040 DEVLINK_NL_FLAG_NEED_SB,
6041 },
6042 {
6043 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_GET,
ef6243ac 6044 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471
JP		 6045 .doit = devlink_nl_cmd_sb_tc_pool_bind_get_doit,
6046 .dumpit = devlink_nl_cmd_sb_tc_pool_bind_get_dumpit,
bf797471
JP		 6047 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
6048 DEVLINK_NL_FLAG_NEED_SB,
6049 /* can be retrieved by unprivileged users */
6050 },
6051 {
6052 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_SET,
ef6243ac 6053 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471 6054 .doit = devlink_nl_cmd_sb_tc_pool_bind_set_doit,
bf797471
JP		 6055 .flags = GENL_ADMIN_PERM,
6056 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
6057 DEVLINK_NL_FLAG_NEED_SB,
6058 },
df38dafd
JP		 6059 {
6060 .cmd = DEVLINK_CMD_SB_OCC_SNAPSHOT,
ef6243ac 6061 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
df38dafd 6062 .doit = devlink_nl_cmd_sb_occ_snapshot_doit,
df38dafd
JP		 6063 .flags = GENL_ADMIN_PERM,
6064 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
2406e7e5 6065 DEVLINK_NL_FLAG_NEED_SB,
df38dafd
JP		 6066 },
6067 {
6068 .cmd = DEVLINK_CMD_SB_OCC_MAX_CLEAR,
ef6243ac 6069 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
df38dafd 6070 .doit = devlink_nl_cmd_sb_occ_max_clear_doit,
df38dafd
JP		 6071 .flags = GENL_ADMIN_PERM,
6072 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
2406e7e5 6073 DEVLINK_NL_FLAG_NEED_SB,
df38dafd 6074 },
08f4b591 6075 {
adf200f3 6076 .cmd = DEVLINK_CMD_ESWITCH_GET,
ef6243ac 6077 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
adf200f3 6078 .doit = devlink_nl_cmd_eswitch_get_doit,
08f4b591
OG		 6079 .flags = GENL_ADMIN_PERM,
6080 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6081 },
6082 {
adf200f3 6083 .cmd = DEVLINK_CMD_ESWITCH_SET,
ef6243ac 6084 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
adf200f3 6085 .doit = devlink_nl_cmd_eswitch_set_doit,
08f4b591 6086 .flags = GENL_ADMIN_PERM,
7ac1cc9a
JK		 6087 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6088 DEVLINK_NL_FLAG_NO_LOCK,
08f4b591 6089 },
1555d204
AS		 6090 {
6091 .cmd = DEVLINK_CMD_DPIPE_TABLE_GET,
ef6243ac 6092 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1555d204 6093 .doit = devlink_nl_cmd_dpipe_table_get,
1555d204 6094 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
67ae686b 6095 /* can be retrieved by unprivileged users */
1555d204
AS		 6096 },
6097 {
6098 .cmd = DEVLINK_CMD_DPIPE_ENTRIES_GET,
ef6243ac 6099 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1555d204 6100 .doit = devlink_nl_cmd_dpipe_entries_get,
1555d204 6101 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
67ae686b 6102 /* can be retrieved by unprivileged users */
1555d204
AS		 6103 },
6104 {
6105 .cmd = DEVLINK_CMD_DPIPE_HEADERS_GET,
ef6243ac 6106 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1555d204 6107 .doit = devlink_nl_cmd_dpipe_headers_get,
1555d204 6108 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
67ae686b 6109 /* can be retrieved by unprivileged users */
1555d204
AS		 6110 },
6111 {
6112 .cmd = DEVLINK_CMD_DPIPE_TABLE_COUNTERS_SET,
ef6243ac 6113 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1555d204 6114 .doit = devlink_nl_cmd_dpipe_table_counters_set,
1555d204
AS		 6115 .flags = GENL_ADMIN_PERM,
6116 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6117 },
d9f9b9a4
AS		 6118 {
6119 .cmd = DEVLINK_CMD_RESOURCE_SET,
ef6243ac 6120 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
d9f9b9a4 6121 .doit = devlink_nl_cmd_resource_set,
d9f9b9a4
AS		 6122 .flags = GENL_ADMIN_PERM,
6123 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6124 },
6125 {
6126 .cmd = DEVLINK_CMD_RESOURCE_DUMP,
ef6243ac 6127 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
d9f9b9a4 6128 .doit = devlink_nl_cmd_resource_dump,
d9f9b9a4 6129 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
67ae686b 6130 /* can be retrieved by unprivileged users */
d9f9b9a4 6131 },
2d8dc5bb
AS		 6132 {
6133 .cmd = DEVLINK_CMD_RELOAD,
ef6243ac 6134 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2d8dc5bb 6135 .doit = devlink_nl_cmd_reload,
2d8dc5bb
AS		 6136 .flags = GENL_ADMIN_PERM,
6137 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6138 DEVLINK_NL_FLAG_NO_LOCK,
6139 },
45f05def
MS		 6140 {
6141 .cmd = DEVLINK_CMD_PARAM_GET,
ef6243ac 6142 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
45f05def
MS		 6143 .doit = devlink_nl_cmd_param_get_doit,
6144 .dumpit = devlink_nl_cmd_param_get_dumpit,
45f05def
MS		 6145 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6146 /* can be retrieved by unprivileged users */
6147 },
e3b7ca18
MS		 6148 {
6149 .cmd = DEVLINK_CMD_PARAM_SET,
ef6243ac 6150 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
e3b7ca18 6151 .doit = devlink_nl_cmd_param_set_doit,
e3b7ca18
MS		 6152 .flags = GENL_ADMIN_PERM,
6153 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6154 },
f4601dee
VV		 6155 {
6156 .cmd = DEVLINK_CMD_PORT_PARAM_GET,
ef6243ac 6157 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
f4601dee
VV		 6158 .doit = devlink_nl_cmd_port_param_get_doit,
6159 .dumpit = devlink_nl_cmd_port_param_get_dumpit,
f4601dee
VV		 6160 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
6161 /* can be retrieved by unprivileged users */
6162 },
9c54873b
VV		 6163 {
6164 .cmd = DEVLINK_CMD_PORT_PARAM_SET,
ef6243ac 6165 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
9c54873b 6166 .doit = devlink_nl_cmd_port_param_set_doit,
9c54873b
VV		 6167 .flags = GENL_ADMIN_PERM,
6168 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
6169 },
d8db7ea5
AV		 6170 {
6171 .cmd = DEVLINK_CMD_REGION_GET,
ef6243ac 6172 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
d8db7ea5
AV		 6173 .doit = devlink_nl_cmd_region_get_doit,
6174 .dumpit = devlink_nl_cmd_region_get_dumpit,
d8db7ea5
AV		 6175 .flags = GENL_ADMIN_PERM,
6176 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6177 },
866319bb
AV		 6178 {
6179 .cmd = DEVLINK_CMD_REGION_DEL,
ef6243ac 6180 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
866319bb 6181 .doit = devlink_nl_cmd_region_del,
866319bb
AV		 6182 .flags = GENL_ADMIN_PERM,
6183 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6184 },
4e54795a
AV		 6185 {
6186 .cmd = DEVLINK_CMD_REGION_READ,
ee85da53
JP		 6187 .validate = GENL_DONT_VALIDATE_STRICT |
6188 GENL_DONT_VALIDATE_DUMP_STRICT,
4e54795a 6189 .dumpit = devlink_nl_cmd_region_read_dumpit,
4e54795a
AV		 6190 .flags = GENL_ADMIN_PERM,
6191 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6192 },
f9cf2288
JK		 6193 {
6194 .cmd = DEVLINK_CMD_INFO_GET,
ef6243ac 6195 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
f9cf2288
JK		 6196 .doit = devlink_nl_cmd_info_get_doit,
6197 .dumpit = devlink_nl_cmd_info_get_dumpit,
f9cf2288
JK		 6198 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6199 /* can be retrieved by unprivileged users */
6200 },
7afe335a
EBE		 6201 {
6202 .cmd = DEVLINK_CMD_HEALTH_REPORTER_GET,
ef6243ac 6203 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7afe335a
EBE		 6204 .doit = devlink_nl_cmd_health_reporter_get_doit,
6205 .dumpit = devlink_nl_cmd_health_reporter_get_dumpit,
b587bdaf
MS		 6206 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6207 DEVLINK_NL_FLAG_NO_LOCK,
7afe335a
EBE		 6208 /* can be retrieved by unprivileged users */
6209 },
a1e55ec0
EBE		 6210 {
6211 .cmd = DEVLINK_CMD_HEALTH_REPORTER_SET,
ef6243ac 6212 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
a1e55ec0 6213 .doit = devlink_nl_cmd_health_reporter_set_doit,
a1e55ec0 6214 .flags = GENL_ADMIN_PERM,
b587bdaf
MS		 6215 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6216 DEVLINK_NL_FLAG_NO_LOCK,
a1e55ec0 6217 },
20a0943a
EBE		 6218 {
6219 .cmd = DEVLINK_CMD_HEALTH_REPORTER_RECOVER,
ef6243ac 6220 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
20a0943a 6221 .doit = devlink_nl_cmd_health_reporter_recover_doit,
20a0943a 6222 .flags = GENL_ADMIN_PERM,
b587bdaf
MS		 6223 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6224 DEVLINK_NL_FLAG_NO_LOCK,
20a0943a 6225 },
fca42a27
EBE		 6226 {
6227 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE,
ef6243ac 6228 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
fca42a27 6229 .doit = devlink_nl_cmd_health_reporter_diagnose_doit,
fca42a27 6230 .flags = GENL_ADMIN_PERM,
b587bdaf
MS		 6231 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6232 DEVLINK_NL_FLAG_NO_LOCK,
fca42a27 6233 },
35455e23
EBE		 6234 {
6235 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET,
82a843de
JP		 6236 .validate = GENL_DONT_VALIDATE_STRICT |
6237 GENL_DONT_VALIDATE_DUMP_STRICT,
e44ef4e4 6238 .dumpit = devlink_nl_cmd_health_reporter_dump_get_dumpit,
35455e23
EBE		 6239 .flags = GENL_ADMIN_PERM,
6240 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6241 DEVLINK_NL_FLAG_NO_LOCK,
6242 },
6243 {
6244 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_CLEAR,
ef6243ac 6245 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
35455e23 6246 .doit = devlink_nl_cmd_health_reporter_dump_clear_doit,
35455e23
EBE		 6247 .flags = GENL_ADMIN_PERM,
6248 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6249 DEVLINK_NL_FLAG_NO_LOCK,
6250 },
76726ccb
JK		 6251 {
6252 .cmd = DEVLINK_CMD_FLASH_UPDATE,
ef6243ac 6253 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
76726ccb 6254 .doit = devlink_nl_cmd_flash_update,
76726ccb
JK		 6255 .flags = GENL_ADMIN_PERM,
6256 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6257 },
0f420b6c
IS		 6258 {
6259 .cmd = DEVLINK_CMD_TRAP_GET,
6260 .doit = devlink_nl_cmd_trap_get_doit,
6261 .dumpit = devlink_nl_cmd_trap_get_dumpit,
6262 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6263 /* can be retrieved by unprivileged users */
6264 },
6265 {
6266 .cmd = DEVLINK_CMD_TRAP_SET,
6267 .doit = devlink_nl_cmd_trap_set_doit,
6268 .flags = GENL_ADMIN_PERM,
6269 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6270 },
6271 {
6272 .cmd = DEVLINK_CMD_TRAP_GROUP_GET,
6273 .doit = devlink_nl_cmd_trap_group_get_doit,
6274 .dumpit = devlink_nl_cmd_trap_group_get_dumpit,
6275 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6276 /* can be retrieved by unprivileged users */
6277 },
6278 {
6279 .cmd = DEVLINK_CMD_TRAP_GROUP_SET,
6280 .doit = devlink_nl_cmd_trap_group_set_doit,
6281 .flags = GENL_ADMIN_PERM,
6282 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6283 },
bfcd3a46
JP		 6284};
6285
56989f6d 6286static struct genl_family devlink_nl_family __ro_after_init = {
489111e5
JB		 6287 .name = DEVLINK_GENL_NAME,
6288 .version = DEVLINK_GENL_VERSION,
6289 .maxattr = DEVLINK_ATTR_MAX,
3b0f31f2 6290 .policy = devlink_nl_policy,
489111e5
JB		 6291 .netnsok = true,
6292 .pre_doit = devlink_nl_pre_doit,
6293 .post_doit = devlink_nl_post_doit,
6294 .module = THIS_MODULE,
6295 .ops = devlink_nl_ops,
6296 .n_ops = ARRAY_SIZE(devlink_nl_ops),
6297 .mcgrps = devlink_nl_mcgrps,
6298 .n_mcgrps = ARRAY_SIZE(devlink_nl_mcgrps),
6299};
6300
bfcd3a46
JP		 6301/**
6302 * devlink_alloc - Allocate new devlink instance resources
6303 *
6304 * @ops: ops
6305 * @priv_size: size of user private data
6306 *
6307 * Allocate new devlink instance resources, including devlink index
6308 * and name.
6309 */
6310struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size)
6311{
6312 struct devlink *devlink;
6313
be6fe1d8
JK		 6314 if (WARN_ON(!ops))
6315 return NULL;
6316
bfcd3a46
JP		 6317 devlink = kzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL);
6318 if (!devlink)
6319 return NULL;
6320 devlink->ops = ops;
8273fd84 6321 __devlink_net_set(devlink, &init_net);
bfcd3a46 6322 INIT_LIST_HEAD(&devlink->port_list);
bf797471 6323 INIT_LIST_HEAD(&devlink->sb_list);
1555d204 6324 INIT_LIST_HEAD_RCU(&devlink->dpipe_table_list);
d9f9b9a4 6325 INIT_LIST_HEAD(&devlink->resource_list);
eabaef18 6326 INIT_LIST_HEAD(&devlink->param_list);
b16ebe92 6327 INIT_LIST_HEAD(&devlink->region_list);
a0bdcc59 6328 INIT_LIST_HEAD(&devlink->reporter_list);
0f420b6c
IS		 6329 INIT_LIST_HEAD(&devlink->trap_list);
6330 INIT_LIST_HEAD(&devlink->trap_group_list);
2406e7e5 6331 mutex_init(&devlink->lock);
b587bdaf 6332 mutex_init(&devlink->reporters_lock);
bfcd3a46
JP		 6333 return devlink;
6334}
6335EXPORT_SYMBOL_GPL(devlink_alloc);
6336
6337/**
6338 * devlink_register - Register devlink instance
6339 *
6340 * @devlink: devlink
eeaadd82 6341 * @dev: parent device
bfcd3a46
JP		 6342 */
6343int devlink_register(struct devlink *devlink, struct device *dev)
6344{
6345 mutex_lock(&devlink_mutex);
6346 devlink->dev = dev;
8273fd84 6347 devlink->registered = true;
bfcd3a46
JP		 6348 list_add_tail(&devlink->list, &devlink_list);
6349 devlink_notify(devlink, DEVLINK_CMD_NEW);
6350 mutex_unlock(&devlink_mutex);
6351 return 0;
6352}
6353EXPORT_SYMBOL_GPL(devlink_register);
6354
6355/**
6356 * devlink_unregister - Unregister devlink instance
6357 *
6358 * @devlink: devlink
6359 */
6360void devlink_unregister(struct devlink *devlink)
6361{
6362 mutex_lock(&devlink_mutex);
a0c76345
JP		 6363 WARN_ON(devlink_reload_supported(devlink) &&
6364 devlink->reload_enabled);
bfcd3a46
JP		 6365 devlink_notify(devlink, DEVLINK_CMD_DEL);
6366 list_del(&devlink->list);
6367 mutex_unlock(&devlink_mutex);
6368}
6369EXPORT_SYMBOL_GPL(devlink_unregister);
6370
a0c76345
JP		 6371/**
6372 * devlink_reload_enable - Enable reload of devlink instance
6373 *
6374 * @devlink: devlink
6375 *
6376 * Should be called at end of device initialization
6377 * process when reload operation is supported.
6378 */
6379void devlink_reload_enable(struct devlink *devlink)
6380{
6381 mutex_lock(&devlink_mutex);
6382 devlink->reload_enabled = true;
6383 mutex_unlock(&devlink_mutex);
6384}
6385EXPORT_SYMBOL_GPL(devlink_reload_enable);
6386
6387/**
6388 * devlink_reload_disable - Disable reload of devlink instance
6389 *
6390 * @devlink: devlink
6391 *
6392 * Should be called at the beginning of device cleanup
6393 * process when reload operation is supported.
6394 */
6395void devlink_reload_disable(struct devlink *devlink)
6396{
6397 mutex_lock(&devlink_mutex);
6398 /* Mutex is taken which ensures that no reload operation is in
6399 * progress while setting up forbidded flag.
6400 */
6401 devlink->reload_enabled = false;
6402 mutex_unlock(&devlink_mutex);
6403}
6404EXPORT_SYMBOL_GPL(devlink_reload_disable);
6405
bfcd3a46
JP		 6406/**
6407 * devlink_free - Free devlink instance resources
6408 *
6409 * @devlink: devlink
6410 */
6411void devlink_free(struct devlink *devlink)
6412{
b587bdaf 6413 mutex_destroy(&devlink->reporters_lock);
375cf8c6 6414 mutex_destroy(&devlink->lock);
0f420b6c
IS		 6415 WARN_ON(!list_empty(&devlink->trap_group_list));
6416 WARN_ON(!list_empty(&devlink->trap_list));
b904aada
PP		 6417 WARN_ON(!list_empty(&devlink->reporter_list));
6418 WARN_ON(!list_empty(&devlink->region_list));
6419 WARN_ON(!list_empty(&devlink->param_list));
6420 WARN_ON(!list_empty(&devlink->resource_list));
6421 WARN_ON(!list_empty(&devlink->dpipe_table_list));
6422 WARN_ON(!list_empty(&devlink->sb_list));
6423 WARN_ON(!list_empty(&devlink->port_list));
6424
bfcd3a46
JP		 6425 kfree(devlink);
6426}
6427EXPORT_SYMBOL_GPL(devlink_free);
6428
136bf27f
JP		 6429static void devlink_port_type_warn(struct work_struct *work)
6430{
6431 WARN(true, "Type was not set for devlink port.");
6432}
6433
6434static bool devlink_port_type_should_warn(struct devlink_port *devlink_port)
6435{
6436 /* Ignore CPU and DSA flavours. */
6437 return devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_CPU &&
6438 devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_DSA;
6439}
6440
4c582234 6441#define DEVLINK_PORT_TYPE_WARN_TIMEOUT (HZ * 3600)
136bf27f
JP		 6442
6443static void devlink_port_type_warn_schedule(struct devlink_port *devlink_port)
6444{
6445 if (!devlink_port_type_should_warn(devlink_port))
6446 return;
6447 /* Schedule a work to WARN in case driver does not set port
6448 * type within timeout.
6449 */
6450 schedule_delayed_work(&devlink_port->type_warn_dw,
6451 DEVLINK_PORT_TYPE_WARN_TIMEOUT);
6452}
6453
6454static void devlink_port_type_warn_cancel(struct devlink_port *devlink_port)
6455{
6456 if (!devlink_port_type_should_warn(devlink_port))
6457 return;
6458 cancel_delayed_work_sync(&devlink_port->type_warn_dw);
6459}
6460
bfcd3a46
JP		 6461/**
6462 * devlink_port_register - Register devlink port
6463 *
6464 * @devlink: devlink
6465 * @devlink_port: devlink port
eeaadd82 6466 * @port_index: driver-specific numerical identifier of the port
bfcd3a46
JP		 6467 *
6468 * Register devlink port with provided port index. User can use
6469 * any indexing, even hw-related one. devlink_port structure
6470 * is convenient to be embedded inside user driver private structure.
6471 * Note that the caller should take care of zeroing the devlink_port
6472 * structure.
6473 */
6474int devlink_port_register(struct devlink *devlink,
6475 struct devlink_port *devlink_port,
6476 unsigned int port_index)
6477{
2406e7e5 6478 mutex_lock(&devlink->lock);
bfcd3a46 6479 if (devlink_port_index_exists(devlink, port_index)) {
2406e7e5 6480 mutex_unlock(&devlink->lock);
bfcd3a46
JP		 6481 return -EEXIST;
6482 }
6483 devlink_port->devlink = devlink;
6484 devlink_port->index = port_index;
bfcd3a46 6485 devlink_port->registered = true;
b8f97554 6486 spin_lock_init(&devlink_port->type_lock);
bfcd3a46 6487 list_add_tail(&devlink_port->list, &devlink->port_list);
39e6160e 6488 INIT_LIST_HEAD(&devlink_port->param_list);
2406e7e5 6489 mutex_unlock(&devlink->lock);
136bf27f
JP		 6490 INIT_DELAYED_WORK(&devlink_port->type_warn_dw, &devlink_port_type_warn);
6491 devlink_port_type_warn_schedule(devlink_port);
bfcd3a46
JP		 6492 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
6493 return 0;
6494}
6495EXPORT_SYMBOL_GPL(devlink_port_register);
6496
6497/**
6498 * devlink_port_unregister - Unregister devlink port
6499 *
6500 * @devlink_port: devlink port
6501 */
6502void devlink_port_unregister(struct devlink_port *devlink_port)
6503{
2406e7e5
AS		 6504 struct devlink *devlink = devlink_port->devlink;
6505
136bf27f 6506 devlink_port_type_warn_cancel(devlink_port);
bfcd3a46 6507 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
2406e7e5 6508 mutex_lock(&devlink->lock);
bfcd3a46 6509 list_del(&devlink_port->list);
2406e7e5 6510 mutex_unlock(&devlink->lock);
bfcd3a46
JP		 6511}
6512EXPORT_SYMBOL_GPL(devlink_port_unregister);
6513
6514static void __devlink_port_type_set(struct devlink_port *devlink_port,
6515 enum devlink_port_type type,
6516 void *type_dev)
6517{
2b239e70
JP		 6518 if (WARN_ON(!devlink_port->registered))
6519 return;
136bf27f 6520 devlink_port_type_warn_cancel(devlink_port);
0f420b6c 6521 spin_lock_bh(&devlink_port->type_lock);
bfcd3a46
JP		 6522 devlink_port->type = type;
6523 devlink_port->type_dev = type_dev;
0f420b6c 6524 spin_unlock_bh(&devlink_port->type_lock);
bfcd3a46
JP		 6525 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
6526}
6527
6528/**
6529 * devlink_port_type_eth_set - Set port type to Ethernet
6530 *
6531 * @devlink_port: devlink port
6532 * @netdev: related netdevice
6533 */
6534void devlink_port_type_eth_set(struct devlink_port *devlink_port,
6535 struct net_device *netdev)
6536{
119c0b57
JP		 6537 const struct net_device_ops *ops = netdev->netdev_ops;
6538
746364f2
JP		 6539 /* If driver registers devlink port, it should set devlink port
6540 * attributes accordingly so the compat functions are called
6541 * and the original ops are not used.
6542 */
119c0b57 6543 if (ops->ndo_get_phys_port_name) {
746364f2
JP		 6544 /* Some drivers use the same set of ndos for netdevs
6545 * that have devlink_port registered and also for
6546 * those who don't. Make sure that ndo_get_phys_port_name
6547 * returns -EOPNOTSUPP here in case it is defined.
6548 * Warn if not.
6549 */
746364f2
JP		 6550 char name[IFNAMSIZ];
6551 int err;
6552
6553 err = ops->ndo_get_phys_port_name(netdev, name, sizeof(name));
6554 WARN_ON(err != -EOPNOTSUPP);
6555 }
119c0b57
JP		 6556 if (ops->ndo_get_port_parent_id) {
6557 /* Some drivers use the same set of ndos for netdevs
6558 * that have devlink_port registered and also for
6559 * those who don't. Make sure that ndo_get_port_parent_id
6560 * returns -EOPNOTSUPP here in case it is defined.
6561 * Warn if not.
6562 */
6563 struct netdev_phys_item_id ppid;
6564 int err;
6565
6566 err = ops->ndo_get_port_parent_id(netdev, &ppid);
6567 WARN_ON(err != -EOPNOTSUPP);
6568 }
773b1f38 6569 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH, netdev);
bfcd3a46
JP		 6570}
6571EXPORT_SYMBOL_GPL(devlink_port_type_eth_set);
6572
6573/**
6574 * devlink_port_type_ib_set - Set port type to InfiniBand
6575 *
6576 * @devlink_port: devlink port
6577 * @ibdev: related IB device
6578 */
6579void devlink_port_type_ib_set(struct devlink_port *devlink_port,
6580 struct ib_device *ibdev)
6581{
773b1f38 6582 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_IB, ibdev);
bfcd3a46
JP		 6583}
6584EXPORT_SYMBOL_GPL(devlink_port_type_ib_set);
6585
6586/**
6587 * devlink_port_type_clear - Clear port type
6588 *
6589 * @devlink_port: devlink port
6590 */
6591void devlink_port_type_clear(struct devlink_port *devlink_port)
6592{
773b1f38 6593 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET, NULL);
136bf27f 6594 devlink_port_type_warn_schedule(devlink_port);
bfcd3a46
JP		 6595}
6596EXPORT_SYMBOL_GPL(devlink_port_type_clear);
6597
378ef01b
PP		 6598static int __devlink_port_attrs_set(struct devlink_port *devlink_port,
6599 enum devlink_port_flavour flavour,
6600 const unsigned char *switch_id,
6601 unsigned char switch_id_len)
6602{
6603 struct devlink_port_attrs *attrs = &devlink_port->attrs;
6604
6605 if (WARN_ON(devlink_port->registered))
6606 return -EEXIST;
6607 attrs->set = true;
6608 attrs->flavour = flavour;
6609 if (switch_id) {
6610 attrs->switch_port = true;
6611 if (WARN_ON(switch_id_len > MAX_PHYS_ITEM_ID_LEN))
6612 switch_id_len = MAX_PHYS_ITEM_ID_LEN;
6613 memcpy(attrs->switch_id.id, switch_id, switch_id_len);
6614 attrs->switch_id.id_len = switch_id_len;
6615 } else {
6616 attrs->switch_port = false;
6617 }
6618 return 0;
6619}
6620
bfcd3a46 6621/**
b9ffcbaf 6622 * devlink_port_attrs_set - Set port attributes
bfcd3a46
JP		 6623 *
6624 * @devlink_port: devlink port
5ec1380a 6625 * @flavour: flavour of the port
b9ffcbaf
JP		 6626 * @port_number: number of the port that is facing user, for example
6627 * the front panel port number
6628 * @split: indicates if this is split port
6629 * @split_subport_number: if the port is split, this is the number
6630 * of subport.
bec5267c
JP		 6631 * @switch_id: if the port is part of switch, this is buffer with ID,
6632 * otwerwise this is NULL
6633 * @switch_id_len: length of the switch_id buffer
bfcd3a46 6634 */
b9ffcbaf 6635void devlink_port_attrs_set(struct devlink_port *devlink_port,
5ec1380a 6636 enum devlink_port_flavour flavour,
b9ffcbaf 6637 u32 port_number, bool split,
bec5267c
JP		 6638 u32 split_subport_number,
6639 const unsigned char *switch_id,
6640 unsigned char switch_id_len)
bfcd3a46 6641{
b9ffcbaf 6642 struct devlink_port_attrs *attrs = &devlink_port->attrs;
378ef01b 6643 int ret;
b9ffcbaf 6644
378ef01b
PP		 6645 ret = __devlink_port_attrs_set(devlink_port, flavour,
6646 switch_id, switch_id_len);
6647 if (ret)
45b86112 6648 return;
b9ffcbaf 6649 attrs->split = split;
378ef01b
PP		 6650 attrs->phys.port_number = port_number;
6651 attrs->phys.split_subport_number = split_subport_number;
bfcd3a46 6652}
b9ffcbaf 6653EXPORT_SYMBOL_GPL(devlink_port_attrs_set);
bfcd3a46 6654
98fd2d65
PP		 6655/**
6656 * devlink_port_attrs_pci_pf_set - Set PCI PF port attributes
6657 *
6658 * @devlink_port: devlink port
6659 * @pf: associated PF for the devlink port instance
6660 * @switch_id: if the port is part of switch, this is buffer with ID,
6661 * otherwise this is NULL
6662 * @switch_id_len: length of the switch_id buffer
6663 */
6664void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port,
6665 const unsigned char *switch_id,
6666 unsigned char switch_id_len, u16 pf)
6667{
6668 struct devlink_port_attrs *attrs = &devlink_port->attrs;
6669 int ret;
6670
6671 ret = __devlink_port_attrs_set(devlink_port,
6672 DEVLINK_PORT_FLAVOUR_PCI_PF,
6673 switch_id, switch_id_len);
6674 if (ret)
6675 return;
6676
6677 attrs->pci_pf.pf = pf;
6678}
6679EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_pf_set);
6680
e41b6bf3
PP		 6681/**
6682 * devlink_port_attrs_pci_vf_set - Set PCI VF port attributes
6683 *
6684 * @devlink_port: devlink port
6685 * @pf: associated PF for the devlink port instance
6686 * @vf: associated VF of a PF for the devlink port instance
6687 * @switch_id: if the port is part of switch, this is buffer with ID,
6688 * otherwise this is NULL
6689 * @switch_id_len: length of the switch_id buffer
6690 */
6691void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port,
6692 const unsigned char *switch_id,
6693 unsigned char switch_id_len,
6694 u16 pf, u16 vf)
6695{
6696 struct devlink_port_attrs *attrs = &devlink_port->attrs;
6697 int ret;
6698
6699 ret = __devlink_port_attrs_set(devlink_port,
6700 DEVLINK_PORT_FLAVOUR_PCI_VF,
6701 switch_id, switch_id_len);
6702 if (ret)
6703 return;
6704 attrs->pci_vf.pf = pf;
6705 attrs->pci_vf.vf = vf;
6706}
6707EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_vf_set);
6708
af3836df
JP		 6709static int __devlink_port_phys_port_name_get(struct devlink_port *devlink_port,
6710 char *name, size_t len)
08474c1a
JP		 6711{
6712 struct devlink_port_attrs *attrs = &devlink_port->attrs;
6713 int n = 0;
6714
6715 if (!attrs->set)
6716 return -EOPNOTSUPP;
6717
6718 switch (attrs->flavour) {
6719 case DEVLINK_PORT_FLAVOUR_PHYSICAL:
6720 if (!attrs->split)
378ef01b 6721 n = snprintf(name, len, "p%u", attrs->phys.port_number);
08474c1a 6722 else
378ef01b
PP		 6723 n = snprintf(name, len, "p%us%u",
6724 attrs->phys.port_number,
6725 attrs->phys.split_subport_number);
08474c1a
JP		 6726 break;
6727 case DEVLINK_PORT_FLAVOUR_CPU:
6728 case DEVLINK_PORT_FLAVOUR_DSA:
6729 /* As CPU and DSA ports do not have a netdevice associated
6730 * case should not ever happen.
6731 */
6732 WARN_ON(1);
6733 return -EINVAL;
98fd2d65
PP		 6734 case DEVLINK_PORT_FLAVOUR_PCI_PF:
6735 n = snprintf(name, len, "pf%u", attrs->pci_pf.pf);
6736 break;
e41b6bf3
PP		 6737 case DEVLINK_PORT_FLAVOUR_PCI_VF:
6738 n = snprintf(name, len, "pf%uvf%u",
6739 attrs->pci_vf.pf, attrs->pci_vf.vf);
6740 break;
08474c1a
JP		 6741 }
6742
6743 if (n >= len)
6744 return -EINVAL;
6745
6746 return 0;
6747}
af3836df 6748
bf797471
JP		 6749int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
6750 u32 size, u16 ingress_pools_count,
6751 u16 egress_pools_count, u16 ingress_tc_count,
6752 u16 egress_tc_count)
6753{
6754 struct devlink_sb *devlink_sb;
6755 int err = 0;
6756
2406e7e5 6757 mutex_lock(&devlink->lock);
bf797471
JP		 6758 if (devlink_sb_index_exists(devlink, sb_index)) {
6759 err = -EEXIST;
6760 goto unlock;
6761 }
6762
6763 devlink_sb = kzalloc(sizeof(*devlink_sb), GFP_KERNEL);
6764 if (!devlink_sb) {
6765 err = -ENOMEM;
6766 goto unlock;
6767 }
6768 devlink_sb->index = sb_index;
6769 devlink_sb->size = size;
6770 devlink_sb->ingress_pools_count = ingress_pools_count;
6771 devlink_sb->egress_pools_count = egress_pools_count;
6772 devlink_sb->ingress_tc_count = ingress_tc_count;
6773 devlink_sb->egress_tc_count = egress_tc_count;
6774 list_add_tail(&devlink_sb->list, &devlink->sb_list);
6775unlock:
2406e7e5 6776 mutex_unlock(&devlink->lock);
bf797471
JP		 6777 return err;
6778}
6779EXPORT_SYMBOL_GPL(devlink_sb_register);
6780
6781void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index)
6782{
6783 struct devlink_sb *devlink_sb;
6784
2406e7e5 6785 mutex_lock(&devlink->lock);
bf797471
JP		 6786 devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
6787 WARN_ON(!devlink_sb);
6788 list_del(&devlink_sb->list);
2406e7e5 6789 mutex_unlock(&devlink->lock);
bf797471
JP		 6790 kfree(devlink_sb);
6791}
6792EXPORT_SYMBOL_GPL(devlink_sb_unregister);
6793
1555d204
AS		 6794/**
6795 * devlink_dpipe_headers_register - register dpipe headers
6796 *
6797 * @devlink: devlink
6798 * @dpipe_headers: dpipe header array
6799 *
6800 * Register the headers supported by hardware.
6801 */
6802int devlink_dpipe_headers_register(struct devlink *devlink,
6803 struct devlink_dpipe_headers *dpipe_headers)
6804{
2406e7e5 6805 mutex_lock(&devlink->lock);
1555d204 6806 devlink->dpipe_headers = dpipe_headers;
2406e7e5 6807 mutex_unlock(&devlink->lock);
1555d204
AS		 6808 return 0;
6809}
6810EXPORT_SYMBOL_GPL(devlink_dpipe_headers_register);
6811
6812/**
6813 * devlink_dpipe_headers_unregister - unregister dpipe headers
6814 *
6815 * @devlink: devlink
6816 *
6817 * Unregister the headers supported by hardware.
6818 */
6819void devlink_dpipe_headers_unregister(struct devlink *devlink)
6820{
2406e7e5 6821 mutex_lock(&devlink->lock);
1555d204 6822 devlink->dpipe_headers = NULL;
2406e7e5 6823 mutex_unlock(&devlink->lock);
1555d204
AS		 6824}
6825EXPORT_SYMBOL_GPL(devlink_dpipe_headers_unregister);
6826
6827/**
6828 * devlink_dpipe_table_counter_enabled - check if counter allocation
6829 * required
6830 * @devlink: devlink
6831 * @table_name: tables name
6832 *
6833 * Used by driver to check if counter allocation is required.
6834 * After counter allocation is turned on the table entries
6835 * are updated to include counter statistics.
6836 *
6837 * After that point on the driver must respect the counter
6838 * state so that each entry added to the table is added
6839 * with a counter.
6840 */
6841bool devlink_dpipe_table_counter_enabled(struct devlink *devlink,
6842 const char *table_name)
6843{
6844 struct devlink_dpipe_table *table;
6845 bool enabled;
6846
6847 rcu_read_lock();
6848 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
6849 table_name);
6850 enabled = false;
6851 if (table)
6852 enabled = table->counters_enabled;
6853 rcu_read_unlock();
6854 return enabled;
6855}
6856EXPORT_SYMBOL_GPL(devlink_dpipe_table_counter_enabled);
6857
6858/**
6859 * devlink_dpipe_table_register - register dpipe table
6860 *
6861 * @devlink: devlink
6862 * @table_name: table name
6863 * @table_ops: table ops
6864 * @priv: priv
1555d204
AS		 6865 * @counter_control_extern: external control for counters
6866 */
6867int devlink_dpipe_table_register(struct devlink *devlink,
6868 const char *table_name,
6869 struct devlink_dpipe_table_ops *table_ops,
ffd3cdcc 6870 void *priv, bool counter_control_extern)
1555d204
AS		 6871{
6872 struct devlink_dpipe_table *table;
6873
6874 if (devlink_dpipe_table_find(&devlink->dpipe_table_list, table_name))
6875 return -EEXIST;
6876
ffd3cdcc
AS		 6877 if (WARN_ON(!table_ops->size_get))
6878 return -EINVAL;
6879
1555d204
AS		 6880 table = kzalloc(sizeof(*table), GFP_KERNEL);
6881 if (!table)
6882 return -ENOMEM;
6883
6884 table->name = table_name;
6885 table->table_ops = table_ops;
6886 table->priv = priv;
1555d204
AS		 6887 table->counter_control_extern = counter_control_extern;
6888
2406e7e5 6889 mutex_lock(&devlink->lock);
1555d204 6890 list_add_tail_rcu(&table->list, &devlink->dpipe_table_list);
2406e7e5 6891 mutex_unlock(&devlink->lock);
1555d204
AS		 6892 return 0;
6893}
6894EXPORT_SYMBOL_GPL(devlink_dpipe_table_register);
6895
6896/**
6897 * devlink_dpipe_table_unregister - unregister dpipe table
6898 *
6899 * @devlink: devlink
6900 * @table_name: table name
6901 */
6902void devlink_dpipe_table_unregister(struct devlink *devlink,
6903 const char *table_name)
6904{
6905 struct devlink_dpipe_table *table;
6906
2406e7e5 6907 mutex_lock(&devlink->lock);
1555d204
AS		 6908 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
6909 table_name);
6910 if (!table)
6911 goto unlock;
6912 list_del_rcu(&table->list);
2406e7e5 6913 mutex_unlock(&devlink->lock);
1555d204
AS		 6914 kfree_rcu(table, rcu);
6915 return;
6916unlock:
2406e7e5 6917 mutex_unlock(&devlink->lock);
1555d204
AS		 6918}
6919EXPORT_SYMBOL_GPL(devlink_dpipe_table_unregister);
6920
d9f9b9a4
AS		 6921/**
6922 * devlink_resource_register - devlink resource register
6923 *
6924 * @devlink: devlink
6925 * @resource_name: resource's name
d9f9b9a4
AS		 6926 * @resource_size: resource's size
6927 * @resource_id: resource's id
eeaadd82
JK		 6928 * @parent_resource_id: resource's parent id
6929 * @size_params: size parameters
d9f9b9a4
AS		 6930 */
6931int devlink_resource_register(struct devlink *devlink,
6932 const char *resource_name,
d9f9b9a4
AS		 6933 u64 resource_size,
6934 u64 resource_id,
6935 u64 parent_resource_id,
fc56be47 6936 const struct devlink_resource_size_params *size_params)
d9f9b9a4
AS		 6937{
6938 struct devlink_resource *resource;
6939 struct list_head *resource_list;
14530746 6940 bool top_hierarchy;
d9f9b9a4
AS		 6941 int err = 0;
6942
14530746
DA		 6943 top_hierarchy = parent_resource_id == DEVLINK_RESOURCE_ID_PARENT_TOP;
6944
d9f9b9a4
AS		 6945 mutex_lock(&devlink->lock);
6946 resource = devlink_resource_find(devlink, NULL, resource_id);
6947 if (resource) {
6948 err = -EINVAL;
6949 goto out;
6950 }
6951
6952 resource = kzalloc(sizeof(*resource), GFP_KERNEL);
6953 if (!resource) {
6954 err = -ENOMEM;
6955 goto out;
6956 }
6957
6958 if (top_hierarchy) {
6959 resource_list = &devlink->resource_list;
6960 } else {
6961 struct devlink_resource *parent_resource;
6962
6963 parent_resource = devlink_resource_find(devlink, NULL,
6964 parent_resource_id);
6965 if (parent_resource) {
6966 resource_list = &parent_resource->resource_list;
6967 resource->parent = parent_resource;
6968 } else {
b75703de 6969 kfree(resource);
d9f9b9a4
AS		 6970 err = -EINVAL;
6971 goto out;
6972 }
6973 }
6974
6975 resource->name = resource_name;
6976 resource->size = resource_size;
6977 resource->size_new = resource_size;
6978 resource->id = resource_id;
d9f9b9a4 6979 resource->size_valid = true;
77d27096
JP		 6980 memcpy(&resource->size_params, size_params,
6981 sizeof(resource->size_params));
d9f9b9a4
AS		 6982 INIT_LIST_HEAD(&resource->resource_list);
6983 list_add_tail(&resource->list, resource_list);
6984out:
6985 mutex_unlock(&devlink->lock);
6986 return err;
6987}
6988EXPORT_SYMBOL_GPL(devlink_resource_register);
6989
6990/**
6991 * devlink_resources_unregister - free all resources
6992 *
6993 * @devlink: devlink
6994 * @resource: resource
6995 */
6996void devlink_resources_unregister(struct devlink *devlink,
6997 struct devlink_resource *resource)
6998{
6999 struct devlink_resource *tmp, *child_resource;
7000 struct list_head *resource_list;
7001
7002 if (resource)
7003 resource_list = &resource->resource_list;
7004 else
7005 resource_list = &devlink->resource_list;
7006
7007 if (!resource)
7008 mutex_lock(&devlink->lock);
7009
7010 list_for_each_entry_safe(child_resource, tmp, resource_list, list) {
7011 devlink_resources_unregister(devlink, child_resource);
7012 list_del(&child_resource->list);
7013 kfree(child_resource);
7014 }
7015
7016 if (!resource)
7017 mutex_unlock(&devlink->lock);
7018}
7019EXPORT_SYMBOL_GPL(devlink_resources_unregister);
7020
7021/**
7022 * devlink_resource_size_get - get and update size
7023 *
7024 * @devlink: devlink
7025 * @resource_id: the requested resource id
7026 * @p_resource_size: ptr to update
7027 */
7028int devlink_resource_size_get(struct devlink *devlink,
7029 u64 resource_id,
7030 u64 *p_resource_size)
7031{
7032 struct devlink_resource *resource;
7033 int err = 0;
7034
7035 mutex_lock(&devlink->lock);
7036 resource = devlink_resource_find(devlink, NULL, resource_id);
7037 if (!resource) {
7038 err = -EINVAL;
7039 goto out;
7040 }
7041 *p_resource_size = resource->size_new;
7042 resource->size = resource->size_new;
7043out:
7044 mutex_unlock(&devlink->lock);
7045 return err;
7046}
7047EXPORT_SYMBOL_GPL(devlink_resource_size_get);
7048
56dc7cd0
AS		 7049/**
7050 * devlink_dpipe_table_resource_set - set the resource id
7051 *
7052 * @devlink: devlink
7053 * @table_name: table name
7054 * @resource_id: resource id
7055 * @resource_units: number of resource's units consumed per table's entry
7056 */
7057int devlink_dpipe_table_resource_set(struct devlink *devlink,
7058 const char *table_name, u64 resource_id,
7059 u64 resource_units)
7060{
7061 struct devlink_dpipe_table *table;
7062 int err = 0;
7063
7064 mutex_lock(&devlink->lock);
7065 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
7066 table_name);
7067 if (!table) {
7068 err = -EINVAL;
7069 goto out;
7070 }
7071 table->resource_id = resource_id;
7072 table->resource_units = resource_units;
7073 table->resource_valid = true;
7074out:
7075 mutex_unlock(&devlink->lock);
7076 return err;
7077}
7078EXPORT_SYMBOL_GPL(devlink_dpipe_table_resource_set);
7079
fc56be47
JP		 7080/**
7081 * devlink_resource_occ_get_register - register occupancy getter
7082 *
7083 * @devlink: devlink
7084 * @resource_id: resource id
7085 * @occ_get: occupancy getter callback
7086 * @occ_get_priv: occupancy getter callback priv
7087 */
7088void devlink_resource_occ_get_register(struct devlink *devlink,
7089 u64 resource_id,
7090 devlink_resource_occ_get_t *occ_get,
7091 void *occ_get_priv)
7092{
7093 struct devlink_resource *resource;
7094
7095 mutex_lock(&devlink->lock);
7096 resource = devlink_resource_find(devlink, NULL, resource_id);
7097 if (WARN_ON(!resource))
7098 goto out;
7099 WARN_ON(resource->occ_get);
7100
7101 resource->occ_get = occ_get;
7102 resource->occ_get_priv = occ_get_priv;
7103out:
7104 mutex_unlock(&devlink->lock);
7105}
7106EXPORT_SYMBOL_GPL(devlink_resource_occ_get_register);
7107
7108/**
7109 * devlink_resource_occ_get_unregister - unregister occupancy getter
7110 *
7111 * @devlink: devlink
7112 * @resource_id: resource id
7113 */
7114void devlink_resource_occ_get_unregister(struct devlink *devlink,
7115 u64 resource_id)
7116{
7117 struct devlink_resource *resource;
7118
7119 mutex_lock(&devlink->lock);
7120 resource = devlink_resource_find(devlink, NULL, resource_id);
7121 if (WARN_ON(!resource))
7122 goto out;
7123 WARN_ON(!resource->occ_get);
7124
7125 resource->occ_get = NULL;
7126 resource->occ_get_priv = NULL;
7127out:
7128 mutex_unlock(&devlink->lock);
7129}
7130EXPORT_SYMBOL_GPL(devlink_resource_occ_get_unregister);
7131
39e6160e
VV		 7132static int devlink_param_verify(const struct devlink_param *param)
7133{
7134 if (!param || !param->name || !param->supported_cmodes)
7135 return -EINVAL;
7136 if (param->generic)
7137 return devlink_param_generic_verify(param);
7138 else
7139 return devlink_param_driver_verify(param);
7140}
7141
7142static int __devlink_params_register(struct devlink *devlink,
c1e5786d 7143 unsigned int port_index,
39e6160e
VV		 7144 struct list_head *param_list,
7145 const struct devlink_param *params,
c1e5786d
VV		 7146 size_t params_count,
7147 enum devlink_command reg_cmd,
7148 enum devlink_command unreg_cmd)
eabaef18
MS		 7149{
7150 const struct devlink_param *param = params;
7151 int i;
7152 int err;
7153
7154 mutex_lock(&devlink->lock);
7155 for (i = 0; i < params_count; i++, param++) {
39e6160e
VV		 7156 err = devlink_param_verify(param);
7157 if (err)
eabaef18 7158 goto rollback;
39e6160e 7159
c1e5786d
VV		 7160 err = devlink_param_register_one(devlink, port_index,
7161 param_list, param, reg_cmd);
eabaef18
MS		 7162 if (err)
7163 goto rollback;
7164 }
7165
7166 mutex_unlock(&devlink->lock);
7167 return 0;
7168
7169rollback:
7170 if (!i)
7171 goto unlock;
7172 for (param--; i > 0; i--, param--)
c1e5786d
VV		 7173 devlink_param_unregister_one(devlink, port_index, param_list,
7174 param, unreg_cmd);
eabaef18
MS		 7175unlock:
7176 mutex_unlock(&devlink->lock);
7177 return err;
7178}
39e6160e
VV		 7179
7180static void __devlink_params_unregister(struct devlink *devlink,
c1e5786d 7181 unsigned int port_index,
39e6160e
VV		 7182 struct list_head *param_list,
7183 const struct devlink_param *params,
c1e5786d
VV		 7184 size_t params_count,
7185 enum devlink_command cmd)
39e6160e
VV		 7186{
7187 const struct devlink_param *param = params;
7188 int i;
7189
7190 mutex_lock(&devlink->lock);
7191 for (i = 0; i < params_count; i++, param++)
c1e5786d
VV		 7192 devlink_param_unregister_one(devlink, 0, param_list, param,
7193 cmd);
39e6160e
VV		 7194 mutex_unlock(&devlink->lock);
7195}
7196
7197/**
7198 * devlink_params_register - register configuration parameters
7199 *
7200 * @devlink: devlink
7201 * @params: configuration parameters array
7202 * @params_count: number of parameters provided
7203 *
7204 * Register the configuration parameters supported by the driver.
7205 */
7206int devlink_params_register(struct devlink *devlink,
7207 const struct devlink_param *params,
7208 size_t params_count)
7209{
c1e5786d
VV		 7210 return __devlink_params_register(devlink, 0, &devlink->param_list,
7211 params, params_count,
7212 DEVLINK_CMD_PARAM_NEW,
7213 DEVLINK_CMD_PARAM_DEL);
39e6160e 7214}
eabaef18
MS		 7215EXPORT_SYMBOL_GPL(devlink_params_register);
7216
7217/**
7218 * devlink_params_unregister - unregister configuration parameters
7219 * @devlink: devlink
7220 * @params: configuration parameters to unregister
7221 * @params_count: number of parameters provided
7222 */
7223void devlink_params_unregister(struct devlink *devlink,
7224 const struct devlink_param *params,
7225 size_t params_count)
7226{
c1e5786d
VV		 7227 return __devlink_params_unregister(devlink, 0, &devlink->param_list,
7228 params, params_count,
7229 DEVLINK_CMD_PARAM_DEL);
eabaef18
MS		 7230}
7231EXPORT_SYMBOL_GPL(devlink_params_unregister);
7232
7c62cfb8
JP		 7233/**
7234 * devlink_params_publish - publish configuration parameters
7235 *
7236 * @devlink: devlink
7237 *
7238 * Publish previously registered configuration parameters.
7239 */
7240void devlink_params_publish(struct devlink *devlink)
7241{
7242 struct devlink_param_item *param_item;
7243
7244 list_for_each_entry(param_item, &devlink->param_list, list) {
7245 if (param_item->published)
7246 continue;
7247 param_item->published = true;
7248 devlink_param_notify(devlink, 0, param_item,
7249 DEVLINK_CMD_PARAM_NEW);
7250 }
7251}
7252EXPORT_SYMBOL_GPL(devlink_params_publish);
7253
7254/**
7255 * devlink_params_unpublish - unpublish configuration parameters
7256 *
7257 * @devlink: devlink
7258 *
7259 * Unpublish previously registered configuration parameters.
7260 */
7261void devlink_params_unpublish(struct devlink *devlink)
7262{
7263 struct devlink_param_item *param_item;
7264
7265 list_for_each_entry(param_item, &devlink->param_list, list) {
7266 if (!param_item->published)
7267 continue;
7268 param_item->published = false;
7269 devlink_param_notify(devlink, 0, param_item,
7270 DEVLINK_CMD_PARAM_DEL);
7271 }
7272}
7273EXPORT_SYMBOL_GPL(devlink_params_unpublish);
7274
39e6160e
VV		 7275/**
7276 * devlink_port_params_register - register port configuration parameters
7277 *
7278 * @devlink_port: devlink port
7279 * @params: configuration parameters array
7280 * @params_count: number of parameters provided
7281 *
7282 * Register the configuration parameters supported by the port.
7283 */
7284int devlink_port_params_register(struct devlink_port *devlink_port,
7285 const struct devlink_param *params,
7286 size_t params_count)
7287{
7288 return __devlink_params_register(devlink_port->devlink,
c1e5786d 7289 devlink_port->index,
39e6160e 7290 &devlink_port->param_list, params,
c1e5786d
VV		 7291 params_count,
7292 DEVLINK_CMD_PORT_PARAM_NEW,
7293 DEVLINK_CMD_PORT_PARAM_DEL);
39e6160e
VV		 7294}
7295EXPORT_SYMBOL_GPL(devlink_port_params_register);
7296
7297/**
7298 * devlink_port_params_unregister - unregister port configuration
7299 * parameters
7300 *
7301 * @devlink_port: devlink port
7302 * @params: configuration parameters array
7303 * @params_count: number of parameters provided
7304 */
7305void devlink_port_params_unregister(struct devlink_port *devlink_port,
7306 const struct devlink_param *params,
7307 size_t params_count)
7308{
7309 return __devlink_params_unregister(devlink_port->devlink,
c1e5786d 7310 devlink_port->index,
39e6160e 7311 &devlink_port->param_list,
c1e5786d
VV		 7312 params, params_count,
7313 DEVLINK_CMD_PORT_PARAM_DEL);
39e6160e
VV		 7314}
7315EXPORT_SYMBOL_GPL(devlink_port_params_unregister);
7316
ffd19b9a
VV		 7317static int
7318__devlink_param_driverinit_value_get(struct list_head *param_list, u32 param_id,
7319 union devlink_param_value *init_val)
ec01aeb1
MS		 7320{
7321 struct devlink_param_item *param_item;
7322
ffd19b9a 7323 param_item = devlink_param_find_by_id(param_list, param_id);
ec01aeb1
MS		 7324 if (!param_item)
7325 return -EINVAL;
7326
7327 if (!param_item->driverinit_value_valid ||
7328 !devlink_param_cmode_is_supported(param_item->param,
7329 DEVLINK_PARAM_CMODE_DRIVERINIT))
7330 return -EOPNOTSUPP;
7331
1276534c
MS		 7332 if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
7333 strcpy(init_val->vstr, param_item->driverinit_value.vstr);
7334 else
7335 *init_val = param_item->driverinit_value;
ec01aeb1
MS		 7336
7337 return 0;
7338}
ffd19b9a 7339
5473a7bd
VV		 7340static int
7341__devlink_param_driverinit_value_set(struct devlink *devlink,
c1e5786d 7342 unsigned int port_index,
5473a7bd
VV		 7343 struct list_head *param_list, u32 param_id,
7344 union devlink_param_value init_val,
7345 enum devlink_command cmd)
7346{
7347 struct devlink_param_item *param_item;
7348
7349 param_item = devlink_param_find_by_id(param_list, param_id);
7350 if (!param_item)
7351 return -EINVAL;
7352
7353 if (!devlink_param_cmode_is_supported(param_item->param,
7354 DEVLINK_PARAM_CMODE_DRIVERINIT))
7355 return -EOPNOTSUPP;
7356
7357 if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
7358 strcpy(param_item->driverinit_value.vstr, init_val.vstr);
7359 else
7360 param_item->driverinit_value = init_val;
7361 param_item->driverinit_value_valid = true;
7362
c1e5786d 7363 devlink_param_notify(devlink, port_index, param_item, cmd);
5473a7bd
VV		 7364 return 0;
7365}
7366
ffd19b9a
VV		 7367/**
7368 * devlink_param_driverinit_value_get - get configuration parameter
7369 * value for driver initializing
7370 *
7371 * @devlink: devlink
7372 * @param_id: parameter ID
7373 * @init_val: value of parameter in driverinit configuration mode
7374 *
7375 * This function should be used by the driver to get driverinit
7376 * configuration for initialization after reload command.
7377 */
7378int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
7379 union devlink_param_value *init_val)
7380{
97691069 7381 if (!devlink_reload_supported(devlink))
ffd19b9a
VV		 7382 return -EOPNOTSUPP;
7383
7384 return __devlink_param_driverinit_value_get(&devlink->param_list,
7385 param_id, init_val);
7386}
ec01aeb1
MS		 7387EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_get);
7388
7389/**
7390 * devlink_param_driverinit_value_set - set value of configuration
7391 * parameter for driverinit
7392 * configuration mode
7393 *
7394 * @devlink: devlink
7395 * @param_id: parameter ID
7396 * @init_val: value of parameter to set for driverinit configuration mode
7397 *
7398 * This function should be used by the driver to set driverinit
7399 * configuration mode default value.
7400 */
7401int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
7402 union devlink_param_value init_val)
7403{
c1e5786d 7404 return __devlink_param_driverinit_value_set(devlink, 0,
5473a7bd
VV		 7405 &devlink->param_list,
7406 param_id, init_val,
7407 DEVLINK_CMD_PARAM_NEW);
ec01aeb1
MS		 7408}
7409EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_set);
7410
ffd19b9a
VV		 7411/**
7412 * devlink_port_param_driverinit_value_get - get configuration parameter
7413 * value for driver initializing
7414 *
7415 * @devlink_port: devlink_port
7416 * @param_id: parameter ID
7417 * @init_val: value of parameter in driverinit configuration mode
7418 *
7419 * This function should be used by the driver to get driverinit
7420 * configuration for initialization after reload command.
7421 */
7422int devlink_port_param_driverinit_value_get(struct devlink_port *devlink_port,
7423 u32 param_id,
7424 union devlink_param_value *init_val)
7425{
7426 struct devlink *devlink = devlink_port->devlink;
7427
97691069 7428 if (!devlink_reload_supported(devlink))
ffd19b9a
VV		 7429 return -EOPNOTSUPP;
7430
7431 return __devlink_param_driverinit_value_get(&devlink_port->param_list,
7432 param_id, init_val);
7433}
7434EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_get);
7435
5473a7bd
VV		 7436/**
7437 * devlink_port_param_driverinit_value_set - set value of configuration
7438 * parameter for driverinit
7439 * configuration mode
7440 *
7441 * @devlink_port: devlink_port
7442 * @param_id: parameter ID
7443 * @init_val: value of parameter to set for driverinit configuration mode
7444 *
7445 * This function should be used by the driver to set driverinit
7446 * configuration mode default value.
7447 */
7448int devlink_port_param_driverinit_value_set(struct devlink_port *devlink_port,
7449 u32 param_id,
7450 union devlink_param_value init_val)
7451{
7452 return __devlink_param_driverinit_value_set(devlink_port->devlink,
c1e5786d 7453 devlink_port->index,
5473a7bd 7454 &devlink_port->param_list,
c1e5786d
VV		 7455 param_id, init_val,
7456 DEVLINK_CMD_PORT_PARAM_NEW);
5473a7bd
VV		 7457}
7458EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_set);
7459
ea601e17
MS		 7460/**
7461 * devlink_param_value_changed - notify devlink on a parameter's value
7462 * change. Should be called by the driver
7463 * right after the change.
7464 *
7465 * @devlink: devlink
7466 * @param_id: parameter ID
7467 *
7468 * This function should be used by the driver to notify devlink on value
7469 * change, excluding driverinit configuration mode.
7470 * For driverinit configuration mode driver should use the function
ea601e17
MS		 7471 */
7472void devlink_param_value_changed(struct devlink *devlink, u32 param_id)
7473{
7474 struct devlink_param_item *param_item;
7475
7476 param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
7477 WARN_ON(!param_item);
7478
c1e5786d 7479 devlink_param_notify(devlink, 0, param_item, DEVLINK_CMD_PARAM_NEW);
ea601e17
MS		 7480}
7481EXPORT_SYMBOL_GPL(devlink_param_value_changed);
7482
c1e5786d
VV		 7483/**
7484 * devlink_port_param_value_changed - notify devlink on a parameter's value
7485 * change. Should be called by the driver
7486 * right after the change.
7487 *
7488 * @devlink_port: devlink_port
7489 * @param_id: parameter ID
7490 *
7491 * This function should be used by the driver to notify devlink on value
7492 * change, excluding driverinit configuration mode.
7493 * For driverinit configuration mode driver should use the function
7494 * devlink_port_param_driverinit_value_set() instead.
7495 */
7496void devlink_port_param_value_changed(struct devlink_port *devlink_port,
7497 u32 param_id)
7498{
7499 struct devlink_param_item *param_item;
7500
7501 param_item = devlink_param_find_by_id(&devlink_port->param_list,
7502 param_id);
7503 WARN_ON(!param_item);
7504
7505 devlink_param_notify(devlink_port->devlink, devlink_port->index,
7506 param_item, DEVLINK_CMD_PORT_PARAM_NEW);
7507}
7508EXPORT_SYMBOL_GPL(devlink_port_param_value_changed);
7509
bde74ad1
MS		 7510/**
7511 * devlink_param_value_str_fill - Safely fill-up the string preventing
7512 * from overflow of the preallocated buffer
7513 *
7514 * @dst_val: destination devlink_param_value
7515 * @src: source buffer
7516 */
7517void devlink_param_value_str_fill(union devlink_param_value *dst_val,
7518 const char *src)
7519{
7520 size_t len;
7521
7522 len = strlcpy(dst_val->vstr, src, __DEVLINK_PARAM_MAX_STRING_VALUE);
7523 WARN_ON(len >= __DEVLINK_PARAM_MAX_STRING_VALUE);
7524}
7525EXPORT_SYMBOL_GPL(devlink_param_value_str_fill);
7526
b16ebe92
AV		 7527/**
7528 * devlink_region_create - create a new address region
7529 *
7530 * @devlink: devlink
7531 * @region_name: region name
7532 * @region_max_snapshots: Maximum supported number of snapshots for region
7533 * @region_size: size of region
7534 */
7535struct devlink_region *devlink_region_create(struct devlink *devlink,
7536 const char *region_name,
7537 u32 region_max_snapshots,
7538 u64 region_size)
7539{
7540 struct devlink_region *region;
7541 int err = 0;
7542
7543 mutex_lock(&devlink->lock);
7544
7545 if (devlink_region_get_by_name(devlink, region_name)) {
7546 err = -EEXIST;
7547 goto unlock;
7548 }
7549
7550 region = kzalloc(sizeof(*region), GFP_KERNEL);
7551 if (!region) {
7552 err = -ENOMEM;
7553 goto unlock;
7554 }
7555
7556 region->devlink = devlink;
7557 region->max_snapshots = region_max_snapshots;
7558 region->name = region_name;
7559 region->size = region_size;
7560 INIT_LIST_HEAD(&region->snapshot_list);
7561 list_add_tail(&region->list, &devlink->region_list);
866319bb 7562 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
b16ebe92
AV		 7563
7564 mutex_unlock(&devlink->lock);
7565 return region;
7566
7567unlock:
7568 mutex_unlock(&devlink->lock);
7569 return ERR_PTR(err);
7570}
7571EXPORT_SYMBOL_GPL(devlink_region_create);
7572
7573/**
7574 * devlink_region_destroy - destroy address region
7575 *
7576 * @region: devlink region to destroy
7577 */
7578void devlink_region_destroy(struct devlink_region *region)
7579{
7580 struct devlink *devlink = region->devlink;
d7e52722 7581 struct devlink_snapshot *snapshot, *ts;
b16ebe92
AV		 7582
7583 mutex_lock(&devlink->lock);
d7e52722
AV		 7584
7585 /* Free all snapshots of region */
7586 list_for_each_entry_safe(snapshot, ts, &region->snapshot_list, list)
92b49822 7587 devlink_region_snapshot_del(region, snapshot);
d7e52722 7588
b16ebe92 7589 list_del(&region->list);
866319bb
AV		 7590
7591 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL);
b16ebe92
AV		 7592 mutex_unlock(&devlink->lock);
7593 kfree(region);
7594}
7595EXPORT_SYMBOL_GPL(devlink_region_destroy);
7596
ccadfa44 7597/**
b0efcae5 7598 * devlink_region_snapshot_id_get - get snapshot ID
ccadfa44
AV		 7599 *
7600 * This callback should be called when adding a new snapshot,
7601 * Driver should use the same id for multiple snapshots taken
7602 * on multiple regions at the same time/by the same trigger.
7603 *
7604 * @devlink: devlink
7605 */
b0efcae5 7606u32 devlink_region_snapshot_id_get(struct devlink *devlink)
ccadfa44
AV		 7607{
7608 u32 id;
7609
7610 mutex_lock(&devlink->lock);
7611 id = ++devlink->snapshot_id;
7612 mutex_unlock(&devlink->lock);
7613
7614 return id;
7615}
b0efcae5 7616EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_get);
ccadfa44 7617
d7e52722
AV		 7618/**
7619 * devlink_region_snapshot_create - create a new snapshot
7620 * This will add a new snapshot of a region. The snapshot
7621 * will be stored on the region struct and can be accessed
7622 * from devlink. This is useful for future analyses of snapshots.
7623 * Multiple snapshots can be created on a region.
7624 * The @snapshot_id should be obtained using the getter function.
7625 *
eeaadd82 7626 * @region: devlink region of the snapshot
d7e52722
AV		 7627 * @data: snapshot data
7628 * @snapshot_id: snapshot id to be created
7629 * @data_destructor: pointer to destructor function to free data
7630 */
3a5e5234 7631int devlink_region_snapshot_create(struct devlink_region *region,
d7e52722
AV		 7632 u8 *data, u32 snapshot_id,
7633 devlink_snapshot_data_dest_t *data_destructor)
7634{
7635 struct devlink *devlink = region->devlink;
7636 struct devlink_snapshot *snapshot;
7637 int err;
7638
7639 mutex_lock(&devlink->lock);
7640
7641 /* check if region can hold one more snapshot */
7642 if (region->cur_snapshots == region->max_snapshots) {
7643 err = -ENOMEM;
7644 goto unlock;
7645 }
7646
7647 if (devlink_region_snapshot_get_by_id(region, snapshot_id)) {
7648 err = -EEXIST;
7649 goto unlock;
7650 }
7651
7652 snapshot = kzalloc(sizeof(*snapshot), GFP_KERNEL);
7653 if (!snapshot) {
7654 err = -ENOMEM;
7655 goto unlock;
7656 }
7657
7658 snapshot->id = snapshot_id;
7659 snapshot->region = region;
7660 snapshot->data = data;
d7e52722
AV		 7661 snapshot->data_destructor = data_destructor;
7662
7663 list_add_tail(&snapshot->list, &region->snapshot_list);
7664
7665 region->cur_snapshots++;
7666
866319bb 7667 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_NEW);
d7e52722
AV		 7668 mutex_unlock(&devlink->lock);
7669 return 0;
7670
7671unlock:
7672 mutex_unlock(&devlink->lock);
7673 return err;
7674}
7675EXPORT_SYMBOL_GPL(devlink_region_snapshot_create);
7676
0f420b6c
IS		 7677#define DEVLINK_TRAP(_id, _type) \
7678 { \
7679 .type = DEVLINK_TRAP_TYPE_##_type, \
7680 .id = DEVLINK_TRAP_GENERIC_ID_##_id, \
7681 .name = DEVLINK_TRAP_GENERIC_NAME_##_id, \
7682 }
7683
7684static const struct devlink_trap devlink_trap_generic[] = {
391203ab
IS		 7685 DEVLINK_TRAP(SMAC_MC, DROP),
7686 DEVLINK_TRAP(VLAN_TAG_MISMATCH, DROP),
7687 DEVLINK_TRAP(INGRESS_VLAN_FILTER, DROP),
7688 DEVLINK_TRAP(INGRESS_STP_FILTER, DROP),
7689 DEVLINK_TRAP(EMPTY_TX_LIST, DROP),
7690 DEVLINK_TRAP(PORT_LOOPBACK_FILTER, DROP),
7691 DEVLINK_TRAP(BLACKHOLE_ROUTE, DROP),
7692 DEVLINK_TRAP(TTL_ERROR, EXCEPTION),
7693 DEVLINK_TRAP(TAIL_DROP, DROP),
6896cc4d
AC		 7694 DEVLINK_TRAP(NON_IP_PACKET, DROP),
7695 DEVLINK_TRAP(UC_DIP_MC_DMAC, DROP),
7696 DEVLINK_TRAP(DIP_LB, DROP),
7697 DEVLINK_TRAP(SIP_MC, DROP),
7698 DEVLINK_TRAP(SIP_LB, DROP),
7699 DEVLINK_TRAP(CORRUPTED_IP_HDR, DROP),
7700 DEVLINK_TRAP(IPV4_SIP_BC, DROP),
7701 DEVLINK_TRAP(IPV6_MC_DIP_RESERVED_SCOPE, DROP),
7702 DEVLINK_TRAP(IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE, DROP),
3b063ae5
AC		 7703 DEVLINK_TRAP(MTU_ERROR, EXCEPTION),
7704 DEVLINK_TRAP(UNRESOLVED_NEIGH, EXCEPTION),
7705 DEVLINK_TRAP(RPF, EXCEPTION),
7706 DEVLINK_TRAP(REJECT_ROUTE, EXCEPTION),
7707 DEVLINK_TRAP(IPV4_LPM_UNICAST_MISS, EXCEPTION),
7708 DEVLINK_TRAP(IPV6_LPM_UNICAST_MISS, EXCEPTION),
95f0ead8 7709 DEVLINK_TRAP(NON_ROUTABLE, DROP),
13c056ec 7710 DEVLINK_TRAP(DECAP_ERROR, EXCEPTION),
c3cae491 7711 DEVLINK_TRAP(OVERLAY_SMAC_MC, DROP),
0f420b6c
IS		 7712};
7713
7714#define DEVLINK_TRAP_GROUP(_id) \
7715 { \
7716 .id = DEVLINK_TRAP_GROUP_GENERIC_ID_##_id, \
7717 .name = DEVLINK_TRAP_GROUP_GENERIC_NAME_##_id, \
7718 }
7719
7720static const struct devlink_trap_group devlink_trap_group_generic[] = {
391203ab
IS		 7721 DEVLINK_TRAP_GROUP(L2_DROPS),
7722 DEVLINK_TRAP_GROUP(L3_DROPS),
7723 DEVLINK_TRAP_GROUP(BUFFER_DROPS),
13c056ec 7724 DEVLINK_TRAP_GROUP(TUNNEL_DROPS),
0f420b6c
IS		 7725};
7726
7727static int devlink_trap_generic_verify(const struct devlink_trap *trap)
7728{
7729 if (trap->id > DEVLINK_TRAP_GENERIC_ID_MAX)
7730 return -EINVAL;
7731
7732 if (strcmp(trap->name, devlink_trap_generic[trap->id].name))
7733 return -EINVAL;
7734
7735 if (trap->type != devlink_trap_generic[trap->id].type)
7736 return -EINVAL;
7737
7738 return 0;
7739}
7740
7741static int devlink_trap_driver_verify(const struct devlink_trap *trap)
7742{
7743 int i;
7744
7745 if (trap->id <= DEVLINK_TRAP_GENERIC_ID_MAX)
7746 return -EINVAL;
7747
7748 for (i = 0; i < ARRAY_SIZE(devlink_trap_generic); i++) {
7749 if (!strcmp(trap->name, devlink_trap_generic[i].name))
7750 return -EEXIST;
7751 }
7752
7753 return 0;
7754}
7755
7756static int devlink_trap_verify(const struct devlink_trap *trap)
7757{
7758 if (!trap || !trap->name || !trap->group.name)
7759 return -EINVAL;
7760
7761 if (trap->generic)
7762 return devlink_trap_generic_verify(trap);
7763 else
7764 return devlink_trap_driver_verify(trap);
7765}
7766
7767static int
7768devlink_trap_group_generic_verify(const struct devlink_trap_group *group)
7769{
7770 if (group->id > DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
7771 return -EINVAL;
7772
7773 if (strcmp(group->name, devlink_trap_group_generic[group->id].name))
7774 return -EINVAL;
7775
7776 return 0;
7777}
7778
7779static int
7780devlink_trap_group_driver_verify(const struct devlink_trap_group *group)
7781{
7782 int i;
7783
7784 if (group->id <= DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
7785 return -EINVAL;
7786
7787 for (i = 0; i < ARRAY_SIZE(devlink_trap_group_generic); i++) {
7788 if (!strcmp(group->name, devlink_trap_group_generic[i].name))
7789 return -EEXIST;
7790 }
7791
7792 return 0;
7793}
7794
7795static int devlink_trap_group_verify(const struct devlink_trap_group *group)
7796{
7797 if (group->generic)
7798 return devlink_trap_group_generic_verify(group);
7799 else
7800 return devlink_trap_group_driver_verify(group);
7801}
7802
7803static void
7804devlink_trap_group_notify(struct devlink *devlink,
7805 const struct devlink_trap_group_item *group_item,
7806 enum devlink_command cmd)
7807{
7808 struct sk_buff *msg;
7809 int err;
7810
7811 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_GROUP_NEW &&
7812 cmd != DEVLINK_CMD_TRAP_GROUP_DEL);
7813
7814 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7815 if (!msg)
7816 return;
7817
7818 err = devlink_nl_trap_group_fill(msg, devlink, group_item, cmd, 0, 0,
7819 0);
7820 if (err) {
7821 nlmsg_free(msg);
7822 return;
7823 }
7824
7825 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
7826 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
7827}
7828
7829static struct devlink_trap_group_item *
7830devlink_trap_group_item_create(struct devlink *devlink,
7831 const struct devlink_trap_group *group)
7832{
7833 struct devlink_trap_group_item *group_item;
7834 int err;
7835
7836 err = devlink_trap_group_verify(group);
7837 if (err)
7838 return ERR_PTR(err);
7839
7840 group_item = kzalloc(sizeof(*group_item), GFP_KERNEL);
7841 if (!group_item)
7842 return ERR_PTR(-ENOMEM);
7843
7844 group_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
7845 if (!group_item->stats) {
7846 err = -ENOMEM;
7847 goto err_stats_alloc;
7848 }
7849
7850 group_item->group = group;
7851 refcount_set(&group_item->refcount, 1);
7852
7853 if (devlink->ops->trap_group_init) {
7854 err = devlink->ops->trap_group_init(devlink, group);
7855 if (err)
7856 goto err_group_init;
7857 }
7858
7859 list_add_tail(&group_item->list, &devlink->trap_group_list);
7860 devlink_trap_group_notify(devlink, group_item,
7861 DEVLINK_CMD_TRAP_GROUP_NEW);
7862
7863 return group_item;
7864
7865err_group_init:
7866 free_percpu(group_item->stats);
7867err_stats_alloc:
7868 kfree(group_item);
7869 return ERR_PTR(err);
7870}
7871
7872static void
7873devlink_trap_group_item_destroy(struct devlink *devlink,
7874 struct devlink_trap_group_item *group_item)
7875{
7876 devlink_trap_group_notify(devlink, group_item,
7877 DEVLINK_CMD_TRAP_GROUP_DEL);
7878 list_del(&group_item->list);
7879 free_percpu(group_item->stats);
7880 kfree(group_item);
7881}
7882
7883static struct devlink_trap_group_item *
7884devlink_trap_group_item_get(struct devlink *devlink,
7885 const struct devlink_trap_group *group)
7886{
7887 struct devlink_trap_group_item *group_item;
7888
7889 group_item = devlink_trap_group_item_lookup(devlink, group->name);
7890 if (group_item) {
7891 refcount_inc(&group_item->refcount);
7892 return group_item;
7893 }
7894
7895 return devlink_trap_group_item_create(devlink, group);
7896}
7897
7898static void
7899devlink_trap_group_item_put(struct devlink *devlink,
7900 struct devlink_trap_group_item *group_item)
7901{
7902 if (!refcount_dec_and_test(&group_item->refcount))
7903 return;
7904
7905 devlink_trap_group_item_destroy(devlink, group_item);
7906}
7907
7908static int
7909devlink_trap_item_group_link(struct devlink *devlink,
7910 struct devlink_trap_item *trap_item)
7911{
7912 struct devlink_trap_group_item *group_item;
7913
7914 group_item = devlink_trap_group_item_get(devlink,
7915 &trap_item->trap->group);
7916 if (IS_ERR(group_item))
7917 return PTR_ERR(group_item);
7918
7919 trap_item->group_item = group_item;
7920
7921 return 0;
7922}
7923
7924static void
7925devlink_trap_item_group_unlink(struct devlink *devlink,
7926 struct devlink_trap_item *trap_item)
7927{
7928 devlink_trap_group_item_put(devlink, trap_item->group_item);
7929}
7930
7931static void devlink_trap_notify(struct devlink *devlink,
7932 const struct devlink_trap_item *trap_item,
7933 enum devlink_command cmd)
7934{
7935 struct sk_buff *msg;
7936 int err;
7937
7938 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_NEW &&
7939 cmd != DEVLINK_CMD_TRAP_DEL);
7940
7941 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7942 if (!msg)
7943 return;
7944
7945 err = devlink_nl_trap_fill(msg, devlink, trap_item, cmd, 0, 0, 0);
7946 if (err) {
7947 nlmsg_free(msg);
7948 return;
7949 }
7950
7951 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
7952 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
7953}
7954
7955static int
7956devlink_trap_register(struct devlink *devlink,
7957 const struct devlink_trap *trap, void *priv)
7958{
7959 struct devlink_trap_item *trap_item;
7960 int err;
7961
7962 if (devlink_trap_item_lookup(devlink, trap->name))
7963 return -EEXIST;
7964
7965 trap_item = kzalloc(sizeof(*trap_item), GFP_KERNEL);
7966 if (!trap_item)
7967 return -ENOMEM;
7968
7969 trap_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
7970 if (!trap_item->stats) {
7971 err = -ENOMEM;
7972 goto err_stats_alloc;
7973 }
7974
7975 trap_item->trap = trap;
7976 trap_item->action = trap->init_action;
7977 trap_item->priv = priv;
7978
7979 err = devlink_trap_item_group_link(devlink, trap_item);
7980 if (err)
7981 goto err_group_link;
7982
7983 err = devlink->ops->trap_init(devlink, trap, trap_item);
7984 if (err)
7985 goto err_trap_init;
7986
7987 list_add_tail(&trap_item->list, &devlink->trap_list);
7988 devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_NEW);
7989
7990 return 0;
7991
7992err_trap_init:
7993 devlink_trap_item_group_unlink(devlink, trap_item);
7994err_group_link:
7995 free_percpu(trap_item->stats);
7996err_stats_alloc:
7997 kfree(trap_item);
7998 return err;
7999}
8000
8001static void devlink_trap_unregister(struct devlink *devlink,
8002 const struct devlink_trap *trap)
8003{
8004 struct devlink_trap_item *trap_item;
8005
8006 trap_item = devlink_trap_item_lookup(devlink, trap->name);
8007 if (WARN_ON_ONCE(!trap_item))
8008 return;
8009
8010 devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_DEL);
8011 list_del(&trap_item->list);
8012 if (devlink->ops->trap_fini)
8013 devlink->ops->trap_fini(devlink, trap, trap_item);
8014 devlink_trap_item_group_unlink(devlink, trap_item);
8015 free_percpu(trap_item->stats);
8016 kfree(trap_item);
8017}
8018
8019static void devlink_trap_disable(struct devlink *devlink,
8020 const struct devlink_trap *trap)
8021{
8022 struct devlink_trap_item *trap_item;
8023
8024 trap_item = devlink_trap_item_lookup(devlink, trap->name);
8025 if (WARN_ON_ONCE(!trap_item))
8026 return;
8027
8028 devlink->ops->trap_action_set(devlink, trap, DEVLINK_TRAP_ACTION_DROP);
8029 trap_item->action = DEVLINK_TRAP_ACTION_DROP;
8030}
8031
8032/**
8033 * devlink_traps_register - Register packet traps with devlink.
8034 * @devlink: devlink.
8035 * @traps: Packet traps.
8036 * @traps_count: Count of provided packet traps.
8037 * @priv: Driver private information.
8038 *
8039 * Return: Non-zero value on failure.
8040 */
8041int devlink_traps_register(struct devlink *devlink,
8042 const struct devlink_trap *traps,
8043 size_t traps_count, void *priv)
8044{
8045 int i, err;
8046
8047 if (!devlink->ops->trap_init || !devlink->ops->trap_action_set)
8048 return -EINVAL;
8049
8050 mutex_lock(&devlink->lock);
8051 for (i = 0; i < traps_count; i++) {
8052 const struct devlink_trap *trap = &traps[i];
8053
8054 err = devlink_trap_verify(trap);
8055 if (err)
8056 goto err_trap_verify;
8057
8058 err = devlink_trap_register(devlink, trap, priv);
8059 if (err)
8060 goto err_trap_register;
8061 }
8062 mutex_unlock(&devlink->lock);
8063
8064 return 0;
8065
8066err_trap_register:
8067err_trap_verify:
8068 for (i--; i >= 0; i--)
8069 devlink_trap_unregister(devlink, &traps[i]);
8070 mutex_unlock(&devlink->lock);
8071 return err;
8072}
8073EXPORT_SYMBOL_GPL(devlink_traps_register);
8074
8075/**
8076 * devlink_traps_unregister - Unregister packet traps from devlink.
8077 * @devlink: devlink.
8078 * @traps: Packet traps.
8079 * @traps_count: Count of provided packet traps.
8080 */
8081void devlink_traps_unregister(struct devlink *devlink,
8082 const struct devlink_trap *traps,
8083 size_t traps_count)
8084{
8085 int i;
8086
8087 mutex_lock(&devlink->lock);
8088 /* Make sure we do not have any packets in-flight while unregistering
8089 * traps by disabling all of them and waiting for a grace period.
8090 */
8091 for (i = traps_count - 1; i >= 0; i--)
8092 devlink_trap_disable(devlink, &traps[i]);
8093 synchronize_rcu();
8094 for (i = traps_count - 1; i >= 0; i--)
8095 devlink_trap_unregister(devlink, &traps[i]);
8096 mutex_unlock(&devlink->lock);
8097}
8098EXPORT_SYMBOL_GPL(devlink_traps_unregister);
8099
8100static void
8101devlink_trap_stats_update(struct devlink_stats __percpu *trap_stats,
8102 size_t skb_len)
8103{
8104 struct devlink_stats *stats;
8105
8106 stats = this_cpu_ptr(trap_stats);
8107 u64_stats_update_begin(&stats->syncp);
8108 stats->rx_bytes += skb_len;
8109 stats->rx_packets++;
8110 u64_stats_update_end(&stats->syncp);
8111}
8112
8113static void
8114devlink_trap_report_metadata_fill(struct net_dm_hw_metadata *hw_metadata,
8115 const struct devlink_trap_item *trap_item,
8116 struct devlink_port *in_devlink_port)
8117{
8118 struct devlink_trap_group_item *group_item = trap_item->group_item;
8119
8120 hw_metadata->trap_group_name = group_item->group->name;
8121 hw_metadata->trap_name = trap_item->trap->name;
8122
8123 spin_lock(&in_devlink_port->type_lock);
8124 if (in_devlink_port->type == DEVLINK_PORT_TYPE_ETH)
8125 hw_metadata->input_dev = in_devlink_port->type_dev;
8126 spin_unlock(&in_devlink_port->type_lock);
8127}
8128
8129/**
8130 * devlink_trap_report - Report trapped packet to drop monitor.
8131 * @devlink: devlink.
8132 * @skb: Trapped packet.
8133 * @trap_ctx: Trap context.
8134 * @in_devlink_port: Input devlink port.
8135 */
8136void devlink_trap_report(struct devlink *devlink, struct sk_buff *skb,
8137 void *trap_ctx, struct devlink_port *in_devlink_port)
8138{
8139 struct devlink_trap_item *trap_item = trap_ctx;
8140 struct net_dm_hw_metadata hw_metadata = {};
8141
8142 devlink_trap_stats_update(trap_item->stats, skb->len);
8143 devlink_trap_stats_update(trap_item->group_item->stats, skb->len);
8144
8145 devlink_trap_report_metadata_fill(&hw_metadata, trap_item,
8146 in_devlink_port);
8147 net_dm_hw_report(skb, &hw_metadata);
8148}
8149EXPORT_SYMBOL_GPL(devlink_trap_report);
8150
8151/**
8152 * devlink_trap_ctx_priv - Trap context to driver private information.
8153 * @trap_ctx: Trap context.
8154 *
8155 * Return: Driver private information passed during registration.
8156 */
8157void *devlink_trap_ctx_priv(void *trap_ctx)
8158{
8159 struct devlink_trap_item *trap_item = trap_ctx;
8160
8161 return trap_item->priv;
8162}
8163EXPORT_SYMBOL_GPL(devlink_trap_ctx_priv);
8164
ddb6e99e
JK		 8165static void __devlink_compat_running_version(struct devlink *devlink,
8166 char *buf, size_t len)
8167{
8168 const struct nlattr *nlattr;
8169 struct devlink_info_req req;
8170 struct sk_buff *msg;
8171 int rem, err;
8172
ddb6e99e
JK		 8173 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8174 if (!msg)
8175 return;
8176
8177 req.msg = msg;
8178 err = devlink->ops->info_get(devlink, &req, NULL);
8179 if (err)
8180 goto free_msg;
8181
8182 nla_for_each_attr(nlattr, (void *)msg->data, msg->len, rem) {
8183 const struct nlattr *kv;
8184 int rem_kv;
8185
8186 if (nla_type(nlattr) != DEVLINK_ATTR_INFO_VERSION_RUNNING)
8187 continue;
8188
8189 nla_for_each_nested(kv, nlattr, rem_kv) {
8190 if (nla_type(kv) != DEVLINK_ATTR_INFO_VERSION_VALUE)
8191 continue;
8192
8193 strlcat(buf, nla_data(kv), len);
8194 strlcat(buf, " ", len);
8195 }
8196 }
8197free_msg:
8198 nlmsg_free(msg);
8199}
8200
8201void devlink_compat_running_version(struct net_device *dev,
8202 char *buf, size_t len)
8203{
ddb6e99e
JK		 8204 struct devlink *devlink;
8205
1b45ff6c
JK		 8206 dev_hold(dev);
8207 rtnl_unlock();
8208
b473b0d2 8209 devlink = netdev_to_devlink(dev);
be6fe1d8 8210 if (!devlink || !devlink->ops->info_get)
e0dcd386 8211 goto out;
b473b0d2
JK		 8212
8213 mutex_lock(&devlink->lock);
8214 __devlink_compat_running_version(devlink, buf, len);
8215 mutex_unlock(&devlink->lock);
1b45ff6c 8216
e0dcd386 8217out:
1b45ff6c
JK		 8218 rtnl_lock();
8219 dev_put(dev);
ddb6e99e
JK		 8220}
8221
4eceba17
JK		 8222int devlink_compat_flash_update(struct net_device *dev, const char *file_name)
8223{
4eceba17 8224 struct devlink *devlink;
e0dcd386 8225 int ret;
4eceba17 8226
1b45ff6c
JK		 8227 dev_hold(dev);
8228 rtnl_unlock();
8229
b473b0d2 8230 devlink = netdev_to_devlink(dev);
e0dcd386
JP		 8231 if (!devlink || !devlink->ops->flash_update) {
8232 ret = -EOPNOTSUPP;
8233 goto out;
8234 }
4eceba17 8235
b473b0d2
JK		 8236 mutex_lock(&devlink->lock);
8237 ret = devlink->ops->flash_update(devlink, file_name, NULL, NULL);
8238 mutex_unlock(&devlink->lock);
1b45ff6c 8239
e0dcd386 8240out:
1b45ff6c
JK		 8241 rtnl_lock();
8242 dev_put(dev);
8243
b473b0d2 8244 return ret;
4eceba17
JK		 8245}
8246
af3836df
JP		 8247int devlink_compat_phys_port_name_get(struct net_device *dev,
8248 char *name, size_t len)
8249{
8250 struct devlink_port *devlink_port;
8251
8252 /* RTNL mutex is held here which ensures that devlink_port
8253 * instance cannot disappear in the middle. No need to take
8254 * any devlink lock as only permanent values are accessed.
8255 */
8256 ASSERT_RTNL();
8257
8258 devlink_port = netdev_to_devlink_port(dev);
8259 if (!devlink_port)
8260 return -EOPNOTSUPP;
8261
8262 return __devlink_port_phys_port_name_get(devlink_port, name, len);
8263}
8264
7e1146e8
JP		 8265int devlink_compat_switch_id_get(struct net_device *dev,
8266 struct netdev_phys_item_id *ppid)
8267{
8268 struct devlink_port *devlink_port;
8269
043b8413
VB		 8270 /* Caller must hold RTNL mutex or reference to dev, which ensures that
8271 * devlink_port instance cannot disappear in the middle. No need to take
7e1146e8
JP		 8272 * any devlink lock as only permanent values are accessed.
8273 */
7e1146e8
JP		 8274 devlink_port = netdev_to_devlink_port(dev);
8275 if (!devlink_port || !devlink_port->attrs.switch_port)
8276 return -EOPNOTSUPP;
8277
8278 memcpy(ppid, &devlink_port->attrs.switch_id, sizeof(*ppid));
8279
8280 return 0;
8281}
8282
070c63f2
JP		 8283static void __net_exit devlink_pernet_pre_exit(struct net *net)
8284{
8285 struct devlink *devlink;
8286 int err;
8287
8288 /* In case network namespace is getting destroyed, reload
8289 * all devlink instances from this namespace into init_net.
8290 */
8291 mutex_lock(&devlink_mutex);
8292 list_for_each_entry(devlink, &devlink_list, list) {
8293 if (net_eq(devlink_net(devlink), net)) {
8294 if (WARN_ON(!devlink_reload_supported(devlink)))
8295 continue;
8296 err = devlink_reload(devlink, &init_net, NULL);
a0c76345 8297 if (err && err != -EOPNOTSUPP)
070c63f2
JP		 8298 pr_warn("Failed to reload devlink instance into init_net\n");
8299 }
8300 }
8301 mutex_unlock(&devlink_mutex);
8302}
8303
8304static struct pernet_operations devlink_pernet_ops __net_initdata = {
8305 .pre_exit = devlink_pernet_pre_exit,
8306};
8307
f4b6bcc7 8308static int __init devlink_init(void)
bfcd3a46 8309{
070c63f2
JP		 8310 int err;
8311
8312 err = genl_register_family(&devlink_nl_family);
8313 if (err)
8314 goto out;
8315 err = register_pernet_subsys(&devlink_pernet_ops);
8316
8317out:
8318 WARN_ON(err);
8319 return err;
bfcd3a46
JP		 8320}
8321
f4b6bcc7 8322subsys_initcall(devlink_init);
Linux 6.x block layer and io_uring tree(s)