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net: dsa: bcm_sf2: Forcibly configure IMP port for 1Gb/sec
[linux-block.git] / net / core / devlink.c
CommitLineData
2874c5fd 1// SPDX-License-Identifier: GPL-2.0-or-later
bfcd3a46
JP		 2/*
3 * net/core/devlink.c - Network physical/parent device Netlink interface
4 *
5 * Heavily inspired by net/wireless/
6 * Copyright (c) 2016 Mellanox Technologies. All rights reserved.
7 * Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com>
bfcd3a46
JP		 8 */
9
10#include <linux/kernel.h>
11#include <linux/module.h>
12#include <linux/types.h>
13#include <linux/slab.h>
14#include <linux/gfp.h>
15#include <linux/device.h>
16#include <linux/list.h>
17#include <linux/netdevice.h>
b8f97554 18#include <linux/spinlock.h>
b587bdaf 19#include <linux/refcount.h>
136bf27f 20#include <linux/workqueue.h>
0f420b6c
IS		 21#include <linux/u64_stats_sync.h>
22#include <linux/timekeeping.h>
bfcd3a46
JP		 23#include <rdma/ib_verbs.h>
24#include <net/netlink.h>
25#include <net/genetlink.h>
26#include <net/rtnetlink.h>
27#include <net/net_namespace.h>
28#include <net/sock.h>
29#include <net/devlink.h>
0f420b6c 30#include <net/drop_monitor.h>
e5224f0f
JP		 31#define CREATE_TRACE_POINTS
32#include <trace/events/devlink.h>
33
11770091
AS		 34static struct devlink_dpipe_field devlink_dpipe_fields_ethernet[] = {
35 {
12bdc5e1 36 .name = "destination mac",
11770091
AS		 37 .id = DEVLINK_DPIPE_FIELD_ETHERNET_DST_MAC,
38 .bitwidth = 48,
39 },
40};
41
42struct devlink_dpipe_header devlink_dpipe_header_ethernet = {
43 .name = "ethernet",
44 .id = DEVLINK_DPIPE_HEADER_ETHERNET,
45 .fields = devlink_dpipe_fields_ethernet,
46 .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ethernet),
47 .global = true,
48};
49EXPORT_SYMBOL(devlink_dpipe_header_ethernet);
50
3fb886ec
AS		 51static struct devlink_dpipe_field devlink_dpipe_fields_ipv4[] = {
52 {
53 .name = "destination ip",
54 .id = DEVLINK_DPIPE_FIELD_IPV4_DST_IP,
55 .bitwidth = 32,
56 },
57};
58
59struct devlink_dpipe_header devlink_dpipe_header_ipv4 = {
60 .name = "ipv4",
61 .id = DEVLINK_DPIPE_HEADER_IPV4,
62 .fields = devlink_dpipe_fields_ipv4,
63 .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv4),
64 .global = true,
65};
66EXPORT_SYMBOL(devlink_dpipe_header_ipv4);
67
1797f5b3
AS		 68static struct devlink_dpipe_field devlink_dpipe_fields_ipv6[] = {
69 {
70 .name = "destination ip",
71 .id = DEVLINK_DPIPE_FIELD_IPV6_DST_IP,
72 .bitwidth = 128,
73 },
74};
75
76struct devlink_dpipe_header devlink_dpipe_header_ipv6 = {
77 .name = "ipv6",
78 .id = DEVLINK_DPIPE_HEADER_IPV6,
79 .fields = devlink_dpipe_fields_ipv6,
80 .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv6),
81 .global = true,
82};
83EXPORT_SYMBOL(devlink_dpipe_header_ipv6);
84
e5224f0f 85EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwmsg);
57186a5f 86EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwerr);
bfcd3a46
JP		 87
88static LIST_HEAD(devlink_list);
89
90/* devlink_mutex
91 *
92 * An overall lock guarding every operation coming from userspace.
93 * It also guards devlink devices list and it is taken when
94 * driver registers/unregisters it.
95 */
96static DEFINE_MUTEX(devlink_mutex);
97
471f894f 98struct net *devlink_net(const struct devlink *devlink)
bfcd3a46
JP		 99{
100 return read_pnet(&devlink->_net);
101}
471f894f 102EXPORT_SYMBOL_GPL(devlink_net);
bfcd3a46 103
8273fd84 104static void __devlink_net_set(struct devlink *devlink, struct net *net)
bfcd3a46
JP		 105{
106 write_pnet(&devlink->_net, net);
107}
108
8273fd84
JP		 109void devlink_net_set(struct devlink *devlink, struct net *net)
110{
111 if (WARN_ON(devlink->registered))
112 return;
113 __devlink_net_set(devlink, net);
114}
115EXPORT_SYMBOL_GPL(devlink_net_set);
116
bfcd3a46
JP		 117static struct devlink *devlink_get_from_attrs(struct net *net,
118 struct nlattr **attrs)
119{
120 struct devlink *devlink;
121 char *busname;
122 char *devname;
123
124 if (!attrs[DEVLINK_ATTR_BUS_NAME] || !attrs[DEVLINK_ATTR_DEV_NAME])
125 return ERR_PTR(-EINVAL);
126
127 busname = nla_data(attrs[DEVLINK_ATTR_BUS_NAME]);
128 devname = nla_data(attrs[DEVLINK_ATTR_DEV_NAME]);
129
dac7c08f
PP		 130 lockdep_assert_held(&devlink_mutex);
131
bfcd3a46
JP		 132 list_for_each_entry(devlink, &devlink_list, list) {
133 if (strcmp(devlink->dev->bus->name, busname) == 0 &&
134 strcmp(dev_name(devlink->dev), devname) == 0 &&
135 net_eq(devlink_net(devlink), net))
136 return devlink;
137 }
138
139 return ERR_PTR(-ENODEV);
140}
141
142static struct devlink *devlink_get_from_info(struct genl_info *info)
143{
144 return devlink_get_from_attrs(genl_info_net(info), info->attrs);
145}
146
147static struct devlink_port *devlink_port_get_by_index(struct devlink *devlink,
c7282b50 148 unsigned int port_index)
bfcd3a46
JP		 149{
150 struct devlink_port *devlink_port;
151
152 list_for_each_entry(devlink_port, &devlink->port_list, list) {
153 if (devlink_port->index == port_index)
154 return devlink_port;
155 }
156 return NULL;
157}
158
c7282b50
PP		 159static bool devlink_port_index_exists(struct devlink *devlink,
160 unsigned int port_index)
bfcd3a46
JP		 161{
162 return devlink_port_get_by_index(devlink, port_index);
163}
164
165static struct devlink_port *devlink_port_get_from_attrs(struct devlink *devlink,
166 struct nlattr **attrs)
167{
168 if (attrs[DEVLINK_ATTR_PORT_INDEX]) {
169 u32 port_index = nla_get_u32(attrs[DEVLINK_ATTR_PORT_INDEX]);
170 struct devlink_port *devlink_port;
171
172 devlink_port = devlink_port_get_by_index(devlink, port_index);
173 if (!devlink_port)
174 return ERR_PTR(-ENODEV);
175 return devlink_port;
176 }
177 return ERR_PTR(-EINVAL);
178}
179
180static struct devlink_port *devlink_port_get_from_info(struct devlink *devlink,
181 struct genl_info *info)
182{
183 return devlink_port_get_from_attrs(devlink, info->attrs);
184}
185
bf797471
JP		 186struct devlink_sb {
187 struct list_head list;
188 unsigned int index;
189 u32 size;
190 u16 ingress_pools_count;
191 u16 egress_pools_count;
192 u16 ingress_tc_count;
193 u16 egress_tc_count;
194};
195
196static u16 devlink_sb_pool_count(struct devlink_sb *devlink_sb)
197{
198 return devlink_sb->ingress_pools_count + devlink_sb->egress_pools_count;
199}
200
201static struct devlink_sb *devlink_sb_get_by_index(struct devlink *devlink,
202 unsigned int sb_index)
203{
204 struct devlink_sb *devlink_sb;
205
206 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
207 if (devlink_sb->index == sb_index)
208 return devlink_sb;
209 }
210 return NULL;
211}
212
213static bool devlink_sb_index_exists(struct devlink *devlink,
214 unsigned int sb_index)
215{
216 return devlink_sb_get_by_index(devlink, sb_index);
217}
218
219static struct devlink_sb *devlink_sb_get_from_attrs(struct devlink *devlink,
220 struct nlattr **attrs)
221{
222 if (attrs[DEVLINK_ATTR_SB_INDEX]) {
223 u32 sb_index = nla_get_u32(attrs[DEVLINK_ATTR_SB_INDEX]);
224 struct devlink_sb *devlink_sb;
225
226 devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
227 if (!devlink_sb)
228 return ERR_PTR(-ENODEV);
229 return devlink_sb;
230 }
231 return ERR_PTR(-EINVAL);
232}
233
234static struct devlink_sb *devlink_sb_get_from_info(struct devlink *devlink,
235 struct genl_info *info)
236{
237 return devlink_sb_get_from_attrs(devlink, info->attrs);
238}
239
240static int devlink_sb_pool_index_get_from_attrs(struct devlink_sb *devlink_sb,
241 struct nlattr **attrs,
242 u16 *p_pool_index)
243{
244 u16 val;
245
246 if (!attrs[DEVLINK_ATTR_SB_POOL_INDEX])
247 return -EINVAL;
248
249 val = nla_get_u16(attrs[DEVLINK_ATTR_SB_POOL_INDEX]);
250 if (val >= devlink_sb_pool_count(devlink_sb))
251 return -EINVAL;
252 *p_pool_index = val;
253 return 0;
254}
255
256static int devlink_sb_pool_index_get_from_info(struct devlink_sb *devlink_sb,
257 struct genl_info *info,
258 u16 *p_pool_index)
259{
260 return devlink_sb_pool_index_get_from_attrs(devlink_sb, info->attrs,
261 p_pool_index);
262}
263
264static int
265devlink_sb_pool_type_get_from_attrs(struct nlattr **attrs,
266 enum devlink_sb_pool_type *p_pool_type)
267{
268 u8 val;
269
270 if (!attrs[DEVLINK_ATTR_SB_POOL_TYPE])
271 return -EINVAL;
272
273 val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_TYPE]);
274 if (val != DEVLINK_SB_POOL_TYPE_INGRESS &&
275 val != DEVLINK_SB_POOL_TYPE_EGRESS)
276 return -EINVAL;
277 *p_pool_type = val;
278 return 0;
279}
280
281static int
282devlink_sb_pool_type_get_from_info(struct genl_info *info,
283 enum devlink_sb_pool_type *p_pool_type)
284{
285 return devlink_sb_pool_type_get_from_attrs(info->attrs, p_pool_type);
286}
287
288static int
289devlink_sb_th_type_get_from_attrs(struct nlattr **attrs,
290 enum devlink_sb_threshold_type *p_th_type)
291{
292 u8 val;
293
294 if (!attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE])
295 return -EINVAL;
296
297 val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE]);
298 if (val != DEVLINK_SB_THRESHOLD_TYPE_STATIC &&
299 val != DEVLINK_SB_THRESHOLD_TYPE_DYNAMIC)
300 return -EINVAL;
301 *p_th_type = val;
302 return 0;
303}
304
305static int
306devlink_sb_th_type_get_from_info(struct genl_info *info,
307 enum devlink_sb_threshold_type *p_th_type)
308{
309 return devlink_sb_th_type_get_from_attrs(info->attrs, p_th_type);
310}
311
312static int
313devlink_sb_tc_index_get_from_attrs(struct devlink_sb *devlink_sb,
314 struct nlattr **attrs,
315 enum devlink_sb_pool_type pool_type,
316 u16 *p_tc_index)
317{
318 u16 val;
319
320 if (!attrs[DEVLINK_ATTR_SB_TC_INDEX])
321 return -EINVAL;
322
323 val = nla_get_u16(attrs[DEVLINK_ATTR_SB_TC_INDEX]);
324 if (pool_type == DEVLINK_SB_POOL_TYPE_INGRESS &&
325 val >= devlink_sb->ingress_tc_count)
326 return -EINVAL;
327 if (pool_type == DEVLINK_SB_POOL_TYPE_EGRESS &&
328 val >= devlink_sb->egress_tc_count)
329 return -EINVAL;
330 *p_tc_index = val;
331 return 0;
332}
333
334static int
335devlink_sb_tc_index_get_from_info(struct devlink_sb *devlink_sb,
336 struct genl_info *info,
337 enum devlink_sb_pool_type pool_type,
338 u16 *p_tc_index)
339{
340 return devlink_sb_tc_index_get_from_attrs(devlink_sb, info->attrs,
341 pool_type, p_tc_index);
342}
343
b16ebe92
AV		 344struct devlink_region {
345 struct devlink *devlink;
346 struct list_head list;
347 const char *name;
348 struct list_head snapshot_list;
349 u32 max_snapshots;
350 u32 cur_snapshots;
351 u64 size;
352};
353
d7e52722
AV		 354struct devlink_snapshot {
355 struct list_head list;
356 struct devlink_region *region;
357 devlink_snapshot_data_dest_t *data_destructor;
d7e52722
AV		 358 u8 *data;
359 u32 id;
360};
361
b16ebe92
AV		 362static struct devlink_region *
363devlink_region_get_by_name(struct devlink *devlink, const char *region_name)
364{
365 struct devlink_region *region;
366
367 list_for_each_entry(region, &devlink->region_list, list)
368 if (!strcmp(region->name, region_name))
369 return region;
370
371 return NULL;
372}
373
d7e52722
AV		 374static struct devlink_snapshot *
375devlink_region_snapshot_get_by_id(struct devlink_region *region, u32 id)
376{
377 struct devlink_snapshot *snapshot;
378
379 list_for_each_entry(snapshot, &region->snapshot_list, list)
380 if (snapshot->id == id)
381 return snapshot;
382
383 return NULL;
384}
385
1fc2257e
JP		 386#define DEVLINK_NL_FLAG_NEED_DEVLINK BIT(0)
387#define DEVLINK_NL_FLAG_NEED_PORT BIT(1)
bf797471 388#define DEVLINK_NL_FLAG_NEED_SB BIT(2)
2406e7e5
AS		 389
390/* The per devlink instance lock is taken by default in the pre-doit
391 * operation, yet several commands do not require this. The global
392 * devlink lock is taken and protects from disruption by user-calls.
393 */
394#define DEVLINK_NL_FLAG_NO_LOCK BIT(3)
bfcd3a46
JP		 395
396static int devlink_nl_pre_doit(const struct genl_ops *ops,
397 struct sk_buff *skb, struct genl_info *info)
398{
399 struct devlink *devlink;
2406e7e5 400 int err;
bfcd3a46
JP		 401
402 mutex_lock(&devlink_mutex);
403 devlink = devlink_get_from_info(info);
404 if (IS_ERR(devlink)) {
405 mutex_unlock(&devlink_mutex);
406 return PTR_ERR(devlink);
407 }
2406e7e5
AS		 408 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
409 mutex_lock(&devlink->lock);
1fc2257e
JP		 410 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_DEVLINK) {
411 info->user_ptr[0] = devlink;
412 } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT) {
bfcd3a46
JP		 413 struct devlink_port *devlink_port;
414
bfcd3a46
JP		 415 devlink_port = devlink_port_get_from_info(devlink, info);
416 if (IS_ERR(devlink_port)) {
2406e7e5
AS		 417 err = PTR_ERR(devlink_port);
418 goto unlock;
bfcd3a46 419 }
1fc2257e 420 info->user_ptr[0] = devlink_port;
bfcd3a46 421 }
bf797471
JP		 422 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_SB) {
423 struct devlink_sb *devlink_sb;
424
425 devlink_sb = devlink_sb_get_from_info(devlink, info);
426 if (IS_ERR(devlink_sb)) {
2406e7e5
AS		 427 err = PTR_ERR(devlink_sb);
428 goto unlock;
bf797471
JP		 429 }
430 info->user_ptr[1] = devlink_sb;
431 }
bfcd3a46 432 return 0;
2406e7e5
AS		 433
434unlock:
435 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
436 mutex_unlock(&devlink->lock);
437 mutex_unlock(&devlink_mutex);
438 return err;
bfcd3a46
JP		 439}
440
441static void devlink_nl_post_doit(const struct genl_ops *ops,
442 struct sk_buff *skb, struct genl_info *info)
443{
2406e7e5
AS		 444 struct devlink *devlink;
445
070c63f2
JP		 446 /* When devlink changes netns, it would not be found
447 * by devlink_get_from_info(). So try if it is stored first.
448 */
449 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_DEVLINK) {
450 devlink = info->user_ptr[0];
451 } else {
452 devlink = devlink_get_from_info(info);
453 WARN_ON(IS_ERR(devlink));
454 }
455 if (!IS_ERR(devlink) && ~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
2406e7e5 456 mutex_unlock(&devlink->lock);
bfcd3a46
JP		 457 mutex_unlock(&devlink_mutex);
458}
459
489111e5 460static struct genl_family devlink_nl_family;
bfcd3a46
JP		 461
462enum devlink_multicast_groups {
463 DEVLINK_MCGRP_CONFIG,
464};
465
466static const struct genl_multicast_group devlink_nl_mcgrps[] = {
467 [DEVLINK_MCGRP_CONFIG] = { .name = DEVLINK_GENL_MCGRP_CONFIG_NAME },
468};
469
470static int devlink_nl_put_handle(struct sk_buff *msg, struct devlink *devlink)
471{
472 if (nla_put_string(msg, DEVLINK_ATTR_BUS_NAME, devlink->dev->bus->name))
473 return -EMSGSIZE;
474 if (nla_put_string(msg, DEVLINK_ATTR_DEV_NAME, dev_name(devlink->dev)))
475 return -EMSGSIZE;
476 return 0;
477}
478
479static int devlink_nl_fill(struct sk_buff *msg, struct devlink *devlink,
480 enum devlink_command cmd, u32 portid,
481 u32 seq, int flags)
482{
483 void *hdr;
484
485 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
486 if (!hdr)
487 return -EMSGSIZE;
488
489 if (devlink_nl_put_handle(msg, devlink))
490 goto nla_put_failure;
2670ac26
JP		 491 if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_FAILED, devlink->reload_failed))
492 goto nla_put_failure;
bfcd3a46
JP		 493
494 genlmsg_end(msg, hdr);
495 return 0;
496
497nla_put_failure:
498 genlmsg_cancel(msg, hdr);
499 return -EMSGSIZE;
500}
501
502static void devlink_notify(struct devlink *devlink, enum devlink_command cmd)
503{
504 struct sk_buff *msg;
505 int err;
506
507 WARN_ON(cmd != DEVLINK_CMD_NEW && cmd != DEVLINK_CMD_DEL);
508
509 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
510 if (!msg)
511 return;
512
513 err = devlink_nl_fill(msg, devlink, cmd, 0, 0, 0);
514 if (err) {
515 nlmsg_free(msg);
516 return;
517 }
518
519 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
520 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
521}
522
b9ffcbaf
JP		 523static int devlink_nl_port_attrs_put(struct sk_buff *msg,
524 struct devlink_port *devlink_port)
525{
526 struct devlink_port_attrs *attrs = &devlink_port->attrs;
527
528 if (!attrs->set)
529 return 0;
5ec1380a
JP		 530 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_FLAVOUR, attrs->flavour))
531 return -EMSGSIZE;
58b6be41
PP		 532 switch (devlink_port->attrs.flavour) {
533 case DEVLINK_PORT_FLAVOUR_PCI_PF:
98fd2d65
PP		 534 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER,
535 attrs->pci_pf.pf))
536 return -EMSGSIZE;
58b6be41
PP		 537 break;
538 case DEVLINK_PORT_FLAVOUR_PCI_VF:
e41b6bf3
PP		 539 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER,
540 attrs->pci_vf.pf) ||
541 nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_VF_NUMBER,
542 attrs->pci_vf.vf))
543 return -EMSGSIZE;
58b6be41
PP		 544 break;
545 case DEVLINK_PORT_FLAVOUR_PHYSICAL:
546 case DEVLINK_PORT_FLAVOUR_CPU:
547 case DEVLINK_PORT_FLAVOUR_DSA:
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 3988
d5b90e99
JK		 3989 /* return 0 if there is no further data to read */
3990 if (start_offset >= region->size) {
3991 err = 0;
3992 goto out_unlock;
3993 }
3994
4e54795a
AV		 3995 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
3996 &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI,
3997 DEVLINK_CMD_REGION_READ);
fdd41ec2
PP		 3998 if (!hdr) {
3999 err = -EMSGSIZE;
4e54795a 4000 goto out_unlock;
fdd41ec2 4001 }
4e54795a
AV		 4002
4003 err = devlink_nl_put_handle(skb, devlink);
4004 if (err)
4005 goto nla_put_failure;
4006
4007 err = nla_put_string(skb, DEVLINK_ATTR_REGION_NAME, region_name);
4008 if (err)
4009 goto nla_put_failure;
4010
ae0be8de 4011 chunks_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_REGION_CHUNKS);
fdd41ec2
PP		 4012 if (!chunks_attr) {
4013 err = -EMSGSIZE;
4e54795a 4014 goto nla_put_failure;
fdd41ec2 4015 }
4e54795a
AV		 4016
4017 if (attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR] &&
4018 attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]) {
4019 if (!start_offset)
4020 start_offset =
4021 nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
4022
4023 end_offset = nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
4024 end_offset += nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]);
4025 dump = false;
4026 }
4027
4028 err = devlink_nl_region_read_snapshot_fill(skb, devlink,
4029 region, attrs,
4030 start_offset,
4031 end_offset, dump,
4032 &ret_offset);
4033
4034 if (err && err != -EMSGSIZE)
4035 goto nla_put_failure;
4036
4037 /* Check if there was any progress done to prevent infinite loop */
fdd41ec2
PP		 4038 if (ret_offset == start_offset) {
4039 err = -EINVAL;
4e54795a 4040 goto nla_put_failure;
fdd41ec2 4041 }
4e54795a
AV		 4042
4043 *((u64 *)&cb->args[0]) = ret_offset;
4044
4045 nla_nest_end(skb, chunks_attr);
4046 genlmsg_end(skb, hdr);
4047 mutex_unlock(&devlink->lock);
4048 mutex_unlock(&devlink_mutex);
4049
4050 return skb->len;
4051
4052nla_put_failure:
4053 genlmsg_cancel(skb, hdr);
4054out_unlock:
4055 mutex_unlock(&devlink->lock);
dac7c08f 4056out_dev:
4e54795a 4057 mutex_unlock(&devlink_mutex);
fdd41ec2 4058 return err;
4e54795a
AV		 4059}
4060
f9cf2288
JK		 4061struct devlink_info_req {
4062 struct sk_buff *msg;
4063};
4064
4065int devlink_info_driver_name_put(struct devlink_info_req *req, const char *name)
4066{
4067 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_DRIVER_NAME, name);
4068}
4069EXPORT_SYMBOL_GPL(devlink_info_driver_name_put);
4070
4071int devlink_info_serial_number_put(struct devlink_info_req *req, const char *sn)
4072{
4073 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_SERIAL_NUMBER, sn);
4074}
4075EXPORT_SYMBOL_GPL(devlink_info_serial_number_put);
4076
fc6fae7d
JK		 4077static int devlink_info_version_put(struct devlink_info_req *req, int attr,
4078 const char *version_name,
4079 const char *version_value)
4080{
4081 struct nlattr *nest;
4082 int err;
4083
ae0be8de 4084 nest = nla_nest_start_noflag(req->msg, attr);
fc6fae7d
JK		 4085 if (!nest)
4086 return -EMSGSIZE;
4087
4088 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_NAME,
4089 version_name);
4090 if (err)
4091 goto nla_put_failure;
4092
4093 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_VALUE,
4094 version_value);
4095 if (err)
4096 goto nla_put_failure;
4097
4098 nla_nest_end(req->msg, nest);
4099
4100 return 0;
4101
4102nla_put_failure:
4103 nla_nest_cancel(req->msg, nest);
4104 return err;
4105}
4106
4107int devlink_info_version_fixed_put(struct devlink_info_req *req,
4108 const char *version_name,
4109 const char *version_value)
4110{
4111 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_FIXED,
4112 version_name, version_value);
4113}
4114EXPORT_SYMBOL_GPL(devlink_info_version_fixed_put);
4115
4116int devlink_info_version_stored_put(struct devlink_info_req *req,
4117 const char *version_name,
4118 const char *version_value)
4119{
4120 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_STORED,
4121 version_name, version_value);
4122}
4123EXPORT_SYMBOL_GPL(devlink_info_version_stored_put);
4124
4125int devlink_info_version_running_put(struct devlink_info_req *req,
4126 const char *version_name,
4127 const char *version_value)
4128{
4129 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_RUNNING,
4130 version_name, version_value);
4131}
4132EXPORT_SYMBOL_GPL(devlink_info_version_running_put);
4133
f9cf2288
JK		 4134static int
4135devlink_nl_info_fill(struct sk_buff *msg, struct devlink *devlink,
4136 enum devlink_command cmd, u32 portid,
4137 u32 seq, int flags, struct netlink_ext_ack *extack)
4138{
4139 struct devlink_info_req req;
4140 void *hdr;
4141 int err;
4142
4143 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
4144 if (!hdr)
4145 return -EMSGSIZE;
4146
4147 err = -EMSGSIZE;
4148 if (devlink_nl_put_handle(msg, devlink))
4149 goto err_cancel_msg;
4150
4151 req.msg = msg;
4152 err = devlink->ops->info_get(devlink, &req, extack);
4153 if (err)
4154 goto err_cancel_msg;
4155
4156 genlmsg_end(msg, hdr);
4157 return 0;
4158
4159err_cancel_msg:
4160 genlmsg_cancel(msg, hdr);
4161 return err;
4162}
4163
4164static int devlink_nl_cmd_info_get_doit(struct sk_buff *skb,
4165 struct genl_info *info)
4166{
4167 struct devlink *devlink = info->user_ptr[0];
4168 struct sk_buff *msg;
4169 int err;
4170
be6fe1d8 4171 if (!devlink->ops->info_get)
f9cf2288
JK		 4172 return -EOPNOTSUPP;
4173
4174 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4175 if (!msg)
4176 return -ENOMEM;
4177
4178 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
4179 info->snd_portid, info->snd_seq, 0,
4180 info->extack);
4181 if (err) {
4182 nlmsg_free(msg);
4183 return err;
4184 }
4185
4186 return genlmsg_reply(msg, info);
4187}
4188
4189static int devlink_nl_cmd_info_get_dumpit(struct sk_buff *msg,
4190 struct netlink_callback *cb)
4191{
4192 struct devlink *devlink;
4193 int start = cb->args[0];
4194 int idx = 0;
c62c2cfb 4195 int err = 0;
f9cf2288
JK		 4196
4197 mutex_lock(&devlink_mutex);
4198 list_for_each_entry(devlink, &devlink_list, list) {
4199 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
4200 continue;
4201 if (idx < start) {
4202 idx++;
4203 continue;
4204 }
4205
c493b09b
JP		 4206 if (!devlink->ops->info_get) {
4207 idx++;
4208 continue;
4209 }
4210
f9cf2288
JK		 4211 mutex_lock(&devlink->lock);
4212 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
4213 NETLINK_CB(cb->skb).portid,
4214 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4215 cb->extack);
4216 mutex_unlock(&devlink->lock);
93c2fcb0 4217 if (err && err != -EOPNOTSUPP)
f9cf2288
JK		 4218 break;
4219 idx++;
4220 }
4221 mutex_unlock(&devlink_mutex);
4222
c62c2cfb
JP		 4223 if (err != -EMSGSIZE)
4224 return err;
4225
f9cf2288
JK		 4226 cb->args[0] = idx;
4227 return msg->len;
4228}
4229
1db64e87
EBE		 4230struct devlink_fmsg_item {
4231 struct list_head list;
4232 int attrtype;
4233 u8 nla_type;
4234 u16 len;
4235 int value[0];
4236};
4237
4238struct devlink_fmsg {
4239 struct list_head item_list;
4240};
4241
4242static struct devlink_fmsg *devlink_fmsg_alloc(void)
4243{
4244 struct devlink_fmsg *fmsg;
4245
4246 fmsg = kzalloc(sizeof(*fmsg), GFP_KERNEL);
4247 if (!fmsg)
4248 return NULL;
4249
4250 INIT_LIST_HEAD(&fmsg->item_list);
4251
4252 return fmsg;
4253}
4254
4255static void devlink_fmsg_free(struct devlink_fmsg *fmsg)
4256{
4257 struct devlink_fmsg_item *item, *tmp;
4258
4259 list_for_each_entry_safe(item, tmp, &fmsg->item_list, list) {
4260 list_del(&item->list);
4261 kfree(item);
4262 }
4263 kfree(fmsg);
4264}
4265
4266static int devlink_fmsg_nest_common(struct devlink_fmsg *fmsg,
4267 int attrtype)
4268{
4269 struct devlink_fmsg_item *item;
4270
4271 item = kzalloc(sizeof(*item), GFP_KERNEL);
4272 if (!item)
4273 return -ENOMEM;
4274
4275 item->attrtype = attrtype;
4276 list_add_tail(&item->list, &fmsg->item_list);
4277
4278 return 0;
4279}
4280
4281int devlink_fmsg_obj_nest_start(struct devlink_fmsg *fmsg)
4282{
4283 return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_OBJ_NEST_START);
4284}
4285EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_start);
4286
4287static int devlink_fmsg_nest_end(struct devlink_fmsg *fmsg)
4288{
4289 return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_NEST_END);
4290}
4291
4292int devlink_fmsg_obj_nest_end(struct devlink_fmsg *fmsg)
4293{
4294 return devlink_fmsg_nest_end(fmsg);
4295}
4296EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_end);
4297
4298#define DEVLINK_FMSG_MAX_SIZE (GENLMSG_DEFAULT_SIZE - GENL_HDRLEN - NLA_HDRLEN)
4299
4300static int devlink_fmsg_put_name(struct devlink_fmsg *fmsg, const char *name)
4301{
4302 struct devlink_fmsg_item *item;
4303
4304 if (strlen(name) + 1 > DEVLINK_FMSG_MAX_SIZE)
4305 return -EMSGSIZE;
4306
4307 item = kzalloc(sizeof(*item) + strlen(name) + 1, GFP_KERNEL);
4308 if (!item)
4309 return -ENOMEM;
4310
4311 item->nla_type = NLA_NUL_STRING;
4312 item->len = strlen(name) + 1;
4313 item->attrtype = DEVLINK_ATTR_FMSG_OBJ_NAME;
4314 memcpy(&item->value, name, item->len);
4315 list_add_tail(&item->list, &fmsg->item_list);
4316
4317 return 0;
4318}
4319
4320int devlink_fmsg_pair_nest_start(struct devlink_fmsg *fmsg, const char *name)
4321{
4322 int err;
4323
4324 err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_PAIR_NEST_START);
4325 if (err)
4326 return err;
4327
4328 err = devlink_fmsg_put_name(fmsg, name);
4329 if (err)
4330 return err;
4331
4332 return 0;
4333}
4334EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_start);
4335
4336int devlink_fmsg_pair_nest_end(struct devlink_fmsg *fmsg)
4337{
4338 return devlink_fmsg_nest_end(fmsg);
4339}
4340EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_end);
4341
4342int devlink_fmsg_arr_pair_nest_start(struct devlink_fmsg *fmsg,
4343 const char *name)
4344{
4345 int err;
4346
4347 err = devlink_fmsg_pair_nest_start(fmsg, name);
4348 if (err)
4349 return err;
4350
4351 err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_ARR_NEST_START);
4352 if (err)
4353 return err;
4354
4355 return 0;
4356}
4357EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_start);
4358
4359int devlink_fmsg_arr_pair_nest_end(struct devlink_fmsg *fmsg)
4360{
4361 int err;
4362
4363 err = devlink_fmsg_nest_end(fmsg);
4364 if (err)
4365 return err;
4366
4367 err = devlink_fmsg_nest_end(fmsg);
4368 if (err)
4369 return err;
4370
4371 return 0;
4372}
4373EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_end);
4374
4375static int devlink_fmsg_put_value(struct devlink_fmsg *fmsg,
4376 const void *value, u16 value_len,
4377 u8 value_nla_type)
4378{
4379 struct devlink_fmsg_item *item;
4380
4381 if (value_len > DEVLINK_FMSG_MAX_SIZE)
4382 return -EMSGSIZE;
4383
4384 item = kzalloc(sizeof(*item) + value_len, GFP_KERNEL);
4385 if (!item)
4386 return -ENOMEM;
4387
4388 item->nla_type = value_nla_type;
4389 item->len = value_len;
4390 item->attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
4391 memcpy(&item->value, value, item->len);
4392 list_add_tail(&item->list, &fmsg->item_list);
4393
4394 return 0;
4395}
4396
4397int devlink_fmsg_bool_put(struct devlink_fmsg *fmsg, bool value)
4398{
4399 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_FLAG);
4400}
4401EXPORT_SYMBOL_GPL(devlink_fmsg_bool_put);
4402
4403int devlink_fmsg_u8_put(struct devlink_fmsg *fmsg, u8 value)
4404{
4405 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U8);
4406}
4407EXPORT_SYMBOL_GPL(devlink_fmsg_u8_put);
4408
4409int devlink_fmsg_u32_put(struct devlink_fmsg *fmsg, u32 value)
4410{
4411 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U32);
4412}
4413EXPORT_SYMBOL_GPL(devlink_fmsg_u32_put);
4414
4415int devlink_fmsg_u64_put(struct devlink_fmsg *fmsg, u64 value)
4416{
4417 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U64);
4418}
4419EXPORT_SYMBOL_GPL(devlink_fmsg_u64_put);
4420
4421int devlink_fmsg_string_put(struct devlink_fmsg *fmsg, const char *value)
4422{
4423 return devlink_fmsg_put_value(fmsg, value, strlen(value) + 1,
4424 NLA_NUL_STRING);
4425}
4426EXPORT_SYMBOL_GPL(devlink_fmsg_string_put);
4427
e2cde864
AL		 4428static int devlink_fmsg_binary_put(struct devlink_fmsg *fmsg, const void *value,
4429 u16 value_len)
1db64e87
EBE		 4430{
4431 return devlink_fmsg_put_value(fmsg, value, value_len, NLA_BINARY);
4432}
1db64e87
EBE		 4433
4434int devlink_fmsg_bool_pair_put(struct devlink_fmsg *fmsg, const char *name,
4435 bool value)
4436{
4437 int err;
4438
4439 err = devlink_fmsg_pair_nest_start(fmsg, name);
4440 if (err)
4441 return err;
4442
4443 err = devlink_fmsg_bool_put(fmsg, value);
4444 if (err)
4445 return err;
4446
4447 err = devlink_fmsg_pair_nest_end(fmsg);
4448 if (err)
4449 return err;
4450
4451 return 0;
4452}
4453EXPORT_SYMBOL_GPL(devlink_fmsg_bool_pair_put);
4454
4455int devlink_fmsg_u8_pair_put(struct devlink_fmsg *fmsg, const char *name,
4456 u8 value)
4457{
4458 int err;
4459
4460 err = devlink_fmsg_pair_nest_start(fmsg, name);
4461 if (err)
4462 return err;
4463
4464 err = devlink_fmsg_u8_put(fmsg, value);
4465 if (err)
4466 return err;
4467
4468 err = devlink_fmsg_pair_nest_end(fmsg);
4469 if (err)
4470 return err;
4471
4472 return 0;
4473}
4474EXPORT_SYMBOL_GPL(devlink_fmsg_u8_pair_put);
4475
4476int devlink_fmsg_u32_pair_put(struct devlink_fmsg *fmsg, const char *name,
4477 u32 value)
4478{
4479 int err;
4480
4481 err = devlink_fmsg_pair_nest_start(fmsg, name);
4482 if (err)
4483 return err;
4484
4485 err = devlink_fmsg_u32_put(fmsg, value);
4486 if (err)
4487 return err;
4488
4489 err = devlink_fmsg_pair_nest_end(fmsg);
4490 if (err)
4491 return err;
4492
4493 return 0;
4494}
4495EXPORT_SYMBOL_GPL(devlink_fmsg_u32_pair_put);
4496
4497int devlink_fmsg_u64_pair_put(struct devlink_fmsg *fmsg, const char *name,
4498 u64 value)
4499{
4500 int err;
4501
4502 err = devlink_fmsg_pair_nest_start(fmsg, name);
4503 if (err)
4504 return err;
4505
4506 err = devlink_fmsg_u64_put(fmsg, value);
4507 if (err)
4508 return err;
4509
4510 err = devlink_fmsg_pair_nest_end(fmsg);
4511 if (err)
4512 return err;
4513
4514 return 0;
4515}
4516EXPORT_SYMBOL_GPL(devlink_fmsg_u64_pair_put);
4517
4518int devlink_fmsg_string_pair_put(struct devlink_fmsg *fmsg, const char *name,
4519 const char *value)
4520{
4521 int err;
4522
4523 err = devlink_fmsg_pair_nest_start(fmsg, name);
4524 if (err)
4525 return err;
4526
4527 err = devlink_fmsg_string_put(fmsg, value);
4528 if (err)
4529 return err;
4530
4531 err = devlink_fmsg_pair_nest_end(fmsg);
4532 if (err)
4533 return err;
4534
4535 return 0;
4536}
4537EXPORT_SYMBOL_GPL(devlink_fmsg_string_pair_put);
4538
4539int devlink_fmsg_binary_pair_put(struct devlink_fmsg *fmsg, const char *name,
e2cde864 4540 const void *value, u32 value_len)
1db64e87 4541{
e2cde864
AL		 4542 u32 data_size;
4543 u32 offset;
1db64e87
EBE		 4544 int err;
4545
e2cde864 4546 err = devlink_fmsg_arr_pair_nest_start(fmsg, name);
1db64e87
EBE		 4547 if (err)
4548 return err;
4549
e2cde864
AL		 4550 for (offset = 0; offset < value_len; offset += data_size) {
4551 data_size = value_len - offset;
4552 if (data_size > DEVLINK_FMSG_MAX_SIZE)
4553 data_size = DEVLINK_FMSG_MAX_SIZE;
4554 err = devlink_fmsg_binary_put(fmsg, value + offset, data_size);
4555 if (err)
4556 return err;
4557 }
1db64e87 4558
e2cde864 4559 err = devlink_fmsg_arr_pair_nest_end(fmsg);
1db64e87
EBE		 4560 if (err)
4561 return err;
4562
4563 return 0;
4564}
4565EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_put);
4566
4567static int
4568devlink_fmsg_item_fill_type(struct devlink_fmsg_item *msg, struct sk_buff *skb)
4569{
4570 switch (msg->nla_type) {
4571 case NLA_FLAG:
4572 case NLA_U8:
4573 case NLA_U32:
4574 case NLA_U64:
4575 case NLA_NUL_STRING:
4576 case NLA_BINARY:
4577 return nla_put_u8(skb, DEVLINK_ATTR_FMSG_OBJ_VALUE_TYPE,
4578 msg->nla_type);
4579 default:
4580 return -EINVAL;
4581 }
4582}
4583
4584static int
4585devlink_fmsg_item_fill_data(struct devlink_fmsg_item *msg, struct sk_buff *skb)
4586{
4587 int attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
4588 u8 tmp;
4589
4590 switch (msg->nla_type) {
4591 case NLA_FLAG:
4592 /* Always provide flag data, regardless of its value */
4593 tmp = *(bool *) msg->value;
4594
4595 return nla_put_u8(skb, attrtype, tmp);
4596 case NLA_U8:
4597 return nla_put_u8(skb, attrtype, *(u8 *) msg->value);
4598 case NLA_U32:
4599 return nla_put_u32(skb, attrtype, *(u32 *) msg->value);
4600 case NLA_U64:
4601 return nla_put_u64_64bit(skb, attrtype, *(u64 *) msg->value,
4602 DEVLINK_ATTR_PAD);
4603 case NLA_NUL_STRING:
4604 return nla_put_string(skb, attrtype, (char *) &msg->value);
4605 case NLA_BINARY:
4606 return nla_put(skb, attrtype, msg->len, (void *) &msg->value);
4607 default:
4608 return -EINVAL;
4609 }
4610}
4611
4612static int
4613devlink_fmsg_prepare_skb(struct devlink_fmsg *fmsg, struct sk_buff *skb,
4614 int *start)
4615{
4616 struct devlink_fmsg_item *item;
4617 struct nlattr *fmsg_nlattr;
4618 int i = 0;
4619 int err;
4620
ae0be8de 4621 fmsg_nlattr = nla_nest_start_noflag(skb, DEVLINK_ATTR_FMSG);
1db64e87
EBE		 4622 if (!fmsg_nlattr)
4623 return -EMSGSIZE;
4624
4625 list_for_each_entry(item, &fmsg->item_list, list) {
4626 if (i < *start) {
4627 i++;
4628 continue;
4629 }
4630
4631 switch (item->attrtype) {
4632 case DEVLINK_ATTR_FMSG_OBJ_NEST_START:
4633 case DEVLINK_ATTR_FMSG_PAIR_NEST_START:
4634 case DEVLINK_ATTR_FMSG_ARR_NEST_START:
4635 case DEVLINK_ATTR_FMSG_NEST_END:
4636 err = nla_put_flag(skb, item->attrtype);
4637 break;
4638 case DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA:
4639 err = devlink_fmsg_item_fill_type(item, skb);
4640 if (err)
4641 break;
4642 err = devlink_fmsg_item_fill_data(item, skb);
4643 break;
4644 case DEVLINK_ATTR_FMSG_OBJ_NAME:
4645 err = nla_put_string(skb, item->attrtype,
4646 (char *) &item->value);
4647 break;
4648 default:
4649 err = -EINVAL;
4650 break;
4651 }
4652 if (!err)
4653 *start = ++i;
4654 else
4655 break;
4656 }
4657
4658 nla_nest_end(skb, fmsg_nlattr);
4659 return err;
4660}
4661
4662static int devlink_fmsg_snd(struct devlink_fmsg *fmsg,
4663 struct genl_info *info,
4664 enum devlink_command cmd, int flags)
4665{
4666 struct nlmsghdr *nlh;
4667 struct sk_buff *skb;
4668 bool last = false;
4669 int index = 0;
4670 void *hdr;
4671 int err;
4672
4673 while (!last) {
4674 int tmp_index = index;
4675
4676 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
4677 if (!skb)
4678 return -ENOMEM;
4679
4680 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
4681 &devlink_nl_family, flags | NLM_F_MULTI, cmd);
4682 if (!hdr) {
4683 err = -EMSGSIZE;
4684 goto nla_put_failure;
4685 }
4686
4687 err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
4688 if (!err)
4689 last = true;
4690 else if (err != -EMSGSIZE || tmp_index == index)
4691 goto nla_put_failure;
4692
4693 genlmsg_end(skb, hdr);
4694 err = genlmsg_reply(skb, info);
4695 if (err)
4696 return err;
4697 }
4698
4699 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
4700 if (!skb)
4701 return -ENOMEM;
4702 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
4703 NLMSG_DONE, 0, flags | NLM_F_MULTI);
4704 if (!nlh) {
4705 err = -EMSGSIZE;
4706 goto nla_put_failure;
4707 }
1db64e87 4708
fde55ea7 4709 return genlmsg_reply(skb, info);
1db64e87
EBE		 4710
4711nla_put_failure:
4712 nlmsg_free(skb);
4713 return err;
4714}
4715
e44ef4e4
AL		 4716static int devlink_fmsg_dumpit(struct devlink_fmsg *fmsg, struct sk_buff *skb,
4717 struct netlink_callback *cb,
4718 enum devlink_command cmd)
4719{
4720 int index = cb->args[0];
4721 int tmp_index = index;
4722 void *hdr;
4723 int err;
4724
4725 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
4726 &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI, cmd);
4727 if (!hdr) {
4728 err = -EMSGSIZE;
4729 goto nla_put_failure;
4730 }
4731
4732 err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
4733 if ((err && err != -EMSGSIZE) || tmp_index == index)
4734 goto nla_put_failure;
4735
4736 cb->args[0] = index;
4737 genlmsg_end(skb, hdr);
4738 return skb->len;
4739
4740nla_put_failure:
4741 genlmsg_cancel(skb, hdr);
4742 return err;
4743}
4744
a0bdcc59
EBE		 4745struct devlink_health_reporter {
4746 struct list_head list;
4747 void *priv;
4748 const struct devlink_health_reporter_ops *ops;
4749 struct devlink *devlink;
c8e1da0b
EBE		 4750 struct devlink_fmsg *dump_fmsg;
4751 struct mutex dump_lock; /* lock parallel read/write from dump buffers */
a0bdcc59
EBE		 4752 u64 graceful_period;
4753 bool auto_recover;
4754 u8 health_state;
c8e1da0b 4755 u64 dump_ts;
d279505b 4756 u64 dump_real_ts;
c8e1da0b
EBE		 4757 u64 error_count;
4758 u64 recovery_count;
4759 u64 last_recovery_ts;
b587bdaf 4760 refcount_t refcount;
c8e1da0b
EBE		 4761};
4762
a0bdcc59
EBE		 4763void *
4764devlink_health_reporter_priv(struct devlink_health_reporter *reporter)
4765{
4766 return reporter->priv;
4767}
4768EXPORT_SYMBOL_GPL(devlink_health_reporter_priv);
4769
4770static struct devlink_health_reporter *
4771devlink_health_reporter_find_by_name(struct devlink *devlink,
4772 const char *reporter_name)
4773{
4774 struct devlink_health_reporter *reporter;
4775
b587bdaf 4776 lockdep_assert_held(&devlink->reporters_lock);
a0bdcc59
EBE		 4777 list_for_each_entry(reporter, &devlink->reporter_list, list)
4778 if (!strcmp(reporter->ops->name, reporter_name))
4779 return reporter;
4780 return NULL;
4781}
4782
4783/**
4784 * devlink_health_reporter_create - create devlink health reporter
4785 *
4786 * @devlink: devlink
4787 * @ops: ops
4788 * @graceful_period: to avoid recovery loops, in msecs
4789 * @auto_recover: auto recover when error occurs
4790 * @priv: priv
4791 */
4792struct devlink_health_reporter *
4793devlink_health_reporter_create(struct devlink *devlink,
4794 const struct devlink_health_reporter_ops *ops,
4795 u64 graceful_period, bool auto_recover,
4796 void *priv)
4797{
4798 struct devlink_health_reporter *reporter;
4799
b587bdaf 4800 mutex_lock(&devlink->reporters_lock);
a0bdcc59
EBE		 4801 if (devlink_health_reporter_find_by_name(devlink, ops->name)) {
4802 reporter = ERR_PTR(-EEXIST);
4803 goto unlock;
4804 }
4805
4806 if (WARN_ON(auto_recover && !ops->recover) ||
4807 WARN_ON(graceful_period && !ops->recover)) {
4808 reporter = ERR_PTR(-EINVAL);
4809 goto unlock;
4810 }
4811
4812 reporter = kzalloc(sizeof(*reporter), GFP_KERNEL);
4813 if (!reporter) {
4814 reporter = ERR_PTR(-ENOMEM);
4815 goto unlock;
4816 }
4817
4818 reporter->priv = priv;
4819 reporter->ops = ops;
4820 reporter->devlink = devlink;
4821 reporter->graceful_period = graceful_period;
4822 reporter->auto_recover = auto_recover;
c8e1da0b 4823 mutex_init(&reporter->dump_lock);
b587bdaf 4824 refcount_set(&reporter->refcount, 1);
a0bdcc59
EBE		 4825 list_add_tail(&reporter->list, &devlink->reporter_list);
4826unlock:
b587bdaf 4827 mutex_unlock(&devlink->reporters_lock);
a0bdcc59
EBE		 4828 return reporter;
4829}
4830EXPORT_SYMBOL_GPL(devlink_health_reporter_create);
4831
4832/**
4833 * devlink_health_reporter_destroy - destroy devlink health reporter
4834 *
4835 * @reporter: devlink health reporter to destroy
4836 */
4837void
4838devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
4839{
b587bdaf 4840 mutex_lock(&reporter->devlink->reporters_lock);
a0bdcc59 4841 list_del(&reporter->list);
b587bdaf
MS		 4842 mutex_unlock(&reporter->devlink->reporters_lock);
4843 while (refcount_read(&reporter->refcount) > 1)
4844 msleep(100);
375cf8c6 4845 mutex_destroy(&reporter->dump_lock);
c8e1da0b
EBE		 4846 if (reporter->dump_fmsg)
4847 devlink_fmsg_free(reporter->dump_fmsg);
a0bdcc59
EBE		 4848 kfree(reporter);
4849}
4850EXPORT_SYMBOL_GPL(devlink_health_reporter_destroy);
4851
6ec8b6cd
MS		 4852static int
4853devlink_nl_health_reporter_fill(struct sk_buff *msg,
4854 struct devlink *devlink,
4855 struct devlink_health_reporter *reporter,
4856 enum devlink_command cmd, u32 portid,
4857 u32 seq, int flags)
4858{
4859 struct nlattr *reporter_attr;
4860 void *hdr;
4861
4862 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
4863 if (!hdr)
4864 return -EMSGSIZE;
4865
4866 if (devlink_nl_put_handle(msg, devlink))
4867 goto genlmsg_cancel;
4868
4869 reporter_attr = nla_nest_start_noflag(msg,
4870 DEVLINK_ATTR_HEALTH_REPORTER);
4871 if (!reporter_attr)
4872 goto genlmsg_cancel;
4873 if (nla_put_string(msg, DEVLINK_ATTR_HEALTH_REPORTER_NAME,
4874 reporter->ops->name))
4875 goto reporter_nest_cancel;
4876 if (nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_STATE,
4877 reporter->health_state))
4878 goto reporter_nest_cancel;
4879 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_ERR_COUNT,
4880 reporter->error_count, DEVLINK_ATTR_PAD))
4881 goto reporter_nest_cancel;
4882 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_RECOVER_COUNT,
4883 reporter->recovery_count, DEVLINK_ATTR_PAD))
4884 goto reporter_nest_cancel;
4885 if (reporter->ops->recover &&
4886 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD,
4887 reporter->graceful_period,
4888 DEVLINK_ATTR_PAD))
4889 goto reporter_nest_cancel;
4890 if (reporter->ops->recover &&
4891 nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER,
4892 reporter->auto_recover))
4893 goto reporter_nest_cancel;
4894 if (reporter->dump_fmsg &&
4895 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS,
4896 jiffies_to_msecs(reporter->dump_ts),
4897 DEVLINK_ATTR_PAD))
4898 goto reporter_nest_cancel;
4899 if (reporter->dump_fmsg &&
4900 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS_NS,
4901 reporter->dump_real_ts, DEVLINK_ATTR_PAD))
4902 goto reporter_nest_cancel;
4903
4904 nla_nest_end(msg, reporter_attr);
4905 genlmsg_end(msg, hdr);
4906 return 0;
4907
4908reporter_nest_cancel:
4909 nla_nest_end(msg, reporter_attr);
4910genlmsg_cancel:
4911 genlmsg_cancel(msg, hdr);
4912 return -EMSGSIZE;
4913}
4914
4915static void devlink_recover_notify(struct devlink_health_reporter *reporter,
4916 enum devlink_command cmd)
4917{
4918 struct sk_buff *msg;
4919 int err;
4920
4921 WARN_ON(cmd != DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
4922
4923 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4924 if (!msg)
4925 return;
4926
4927 err = devlink_nl_health_reporter_fill(msg, reporter->devlink,
4928 reporter, cmd, 0, 0, 0);
4929 if (err) {
4930 nlmsg_free(msg);
4931 return;
4932 }
4933
4934 genlmsg_multicast_netns(&devlink_nl_family,
4935 devlink_net(reporter->devlink),
4936 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
4937}
4938
6181e5cb
VG		 4939void
4940devlink_health_reporter_recovery_done(struct devlink_health_reporter *reporter)
4941{
4942 reporter->recovery_count++;
4943 reporter->last_recovery_ts = jiffies;
4944}
4945EXPORT_SYMBOL_GPL(devlink_health_reporter_recovery_done);
4946
c8e1da0b
EBE		 4947static int
4948devlink_health_reporter_recover(struct devlink_health_reporter *reporter,
e7a98105 4949 void *priv_ctx, struct netlink_ext_ack *extack)
c8e1da0b
EBE		 4950{
4951 int err;
4952
40281820
JP		 4953 if (reporter->health_state == DEVLINK_HEALTH_REPORTER_STATE_HEALTHY)
4954 return 0;
4955
c8e1da0b
EBE		 4956 if (!reporter->ops->recover)
4957 return -EOPNOTSUPP;
4958
e7a98105 4959 err = reporter->ops->recover(reporter, priv_ctx, extack);
c8e1da0b
EBE		 4960 if (err)
4961 return err;
4962
6181e5cb 4963 devlink_health_reporter_recovery_done(reporter);
c8e1da0b 4964 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_HEALTHY;
6ec8b6cd 4965 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
c8e1da0b
EBE		 4966
4967 return 0;
4968}
4969
4970static void
4971devlink_health_dump_clear(struct devlink_health_reporter *reporter)
4972{
4973 if (!reporter->dump_fmsg)
4974 return;
4975 devlink_fmsg_free(reporter->dump_fmsg);
4976 reporter->dump_fmsg = NULL;
4977}
4978
4979static int devlink_health_do_dump(struct devlink_health_reporter *reporter,
e7a98105
JP		 4980 void *priv_ctx,
4981 struct netlink_ext_ack *extack)
c8e1da0b
EBE		 4982{
4983 int err;
4984
4985 if (!reporter->ops->dump)
4986 return 0;
4987
4988 if (reporter->dump_fmsg)
4989 return 0;
4990
4991 reporter->dump_fmsg = devlink_fmsg_alloc();
4992 if (!reporter->dump_fmsg) {
4993 err = -ENOMEM;
4994 return err;
4995 }
4996
4997 err = devlink_fmsg_obj_nest_start(reporter->dump_fmsg);
4998 if (err)
4999 goto dump_err;
5000
5001 err = reporter->ops->dump(reporter, reporter->dump_fmsg,
e7a98105 5002 priv_ctx, extack);
c8e1da0b
EBE		 5003 if (err)
5004 goto dump_err;
5005
5006 err = devlink_fmsg_obj_nest_end(reporter->dump_fmsg);
5007 if (err)
5008 goto dump_err;
5009
5010 reporter->dump_ts = jiffies;
d279505b 5011 reporter->dump_real_ts = ktime_get_real_ns();
c8e1da0b
EBE		 5012
5013 return 0;
5014
5015dump_err:
5016 devlink_health_dump_clear(reporter);
5017 return err;
5018}
5019
5020int devlink_health_report(struct devlink_health_reporter *reporter,
5021 const char *msg, void *priv_ctx)
5022{
a0a21adb 5023 enum devlink_health_reporter_state prev_health_state;
c8e1da0b
EBE		 5024 struct devlink *devlink = reporter->devlink;
5025
5026 /* write a log message of the current error */
5027 WARN_ON(!msg);
5028 trace_devlink_health_report(devlink, reporter->ops->name, msg);
5029 reporter->error_count++;
a0a21adb
EBE		 5030 prev_health_state = reporter->health_state;
5031 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
6ec8b6cd 5032 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
c8e1da0b
EBE		 5033
5034 /* abort if the previous error wasn't recovered */
5035 if (reporter->auto_recover &&
a0a21adb 5036 (prev_health_state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY ||
c8e1da0b
EBE		 5037 jiffies - reporter->last_recovery_ts <
5038 msecs_to_jiffies(reporter->graceful_period))) {
5039 trace_devlink_health_recover_aborted(devlink,
5040 reporter->ops->name,
5041 reporter->health_state,
5042 jiffies -
5043 reporter->last_recovery_ts);
5044 return -ECANCELED;
5045 }
5046
5047 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
5048
5049 mutex_lock(&reporter->dump_lock);
5050 /* store current dump of current error, for later analysis */
e7a98105 5051 devlink_health_do_dump(reporter, priv_ctx, NULL);
c8e1da0b
EBE		 5052 mutex_unlock(&reporter->dump_lock);
5053
5054 if (reporter->auto_recover)
e7a98105
JP		 5055 return devlink_health_reporter_recover(reporter,
5056 priv_ctx, NULL);
c8e1da0b
EBE		 5057
5058 return 0;
5059}
5060EXPORT_SYMBOL_GPL(devlink_health_report);
5061
7afe335a 5062static struct devlink_health_reporter *
e44ef4e4
AL		 5063devlink_health_reporter_get_from_attrs(struct devlink *devlink,
5064 struct nlattr **attrs)
7afe335a 5065{
b587bdaf 5066 struct devlink_health_reporter *reporter;
7afe335a
EBE		 5067 char *reporter_name;
5068
e44ef4e4 5069 if (!attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME])
7afe335a
EBE		 5070 return NULL;
5071
e44ef4e4 5072 reporter_name = nla_data(attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME]);
b587bdaf
MS		 5073 mutex_lock(&devlink->reporters_lock);
5074 reporter = devlink_health_reporter_find_by_name(devlink, reporter_name);
5075 if (reporter)
5076 refcount_inc(&reporter->refcount);
5077 mutex_unlock(&devlink->reporters_lock);
5078 return reporter;
5079}
5080
e44ef4e4
AL		 5081static struct devlink_health_reporter *
5082devlink_health_reporter_get_from_info(struct devlink *devlink,
5083 struct genl_info *info)
5084{
5085 return devlink_health_reporter_get_from_attrs(devlink, info->attrs);
5086}
5087
5088static struct devlink_health_reporter *
5089devlink_health_reporter_get_from_cb(struct netlink_callback *cb)
5090{
ee85da53 5091 const struct genl_dumpit_info *info = genl_dumpit_info(cb);
e44ef4e4 5092 struct devlink_health_reporter *reporter;
ee85da53 5093 struct nlattr **attrs = info->attrs;
e44ef4e4 5094 struct devlink *devlink;
e44ef4e4
AL		 5095
5096 mutex_lock(&devlink_mutex);
5097 devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
5098 if (IS_ERR(devlink))
5099 goto unlock;
5100
5101 reporter = devlink_health_reporter_get_from_attrs(devlink, attrs);
5102 mutex_unlock(&devlink_mutex);
e44ef4e4
AL		 5103 return reporter;
5104unlock:
5105 mutex_unlock(&devlink_mutex);
e44ef4e4
AL		 5106 return NULL;
5107}
5108
b587bdaf
MS		 5109static void
5110devlink_health_reporter_put(struct devlink_health_reporter *reporter)
5111{
5112 refcount_dec(&reporter->refcount);
7afe335a
EBE		 5113}
5114
97ff3bd3
VG		 5115void
5116devlink_health_reporter_state_update(struct devlink_health_reporter *reporter,
5117 enum devlink_health_reporter_state state)
5118{
5119 if (WARN_ON(state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY &&
5120 state != DEVLINK_HEALTH_REPORTER_STATE_ERROR))
5121 return;
5122
5123 if (reporter->health_state == state)
5124 return;
5125
5126 reporter->health_state = state;
5127 trace_devlink_health_reporter_state_update(reporter->devlink,
5128 reporter->ops->name, state);
5129 devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
5130}
5131EXPORT_SYMBOL_GPL(devlink_health_reporter_state_update);
5132
7afe335a
EBE		 5133static int devlink_nl_cmd_health_reporter_get_doit(struct sk_buff *skb,
5134 struct genl_info *info)
5135{
5136 struct devlink *devlink = info->user_ptr[0];
5137 struct devlink_health_reporter *reporter;
5138 struct sk_buff *msg;
5139 int err;
5140
5141 reporter = devlink_health_reporter_get_from_info(devlink, info);
5142 if (!reporter)
5143 return -EINVAL;
5144
5145 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
b587bdaf
MS		 5146 if (!msg) {
5147 err = -ENOMEM;
5148 goto out;
5149 }
7afe335a
EBE		 5150
5151 err = devlink_nl_health_reporter_fill(msg, devlink, reporter,
5152 DEVLINK_CMD_HEALTH_REPORTER_GET,
5153 info->snd_portid, info->snd_seq,
5154 0);
5155 if (err) {
5156 nlmsg_free(msg);
b587bdaf 5157 goto out;
7afe335a
EBE		 5158 }
5159
b587bdaf
MS		 5160 err = genlmsg_reply(msg, info);
5161out:
5162 devlink_health_reporter_put(reporter);
5163 return err;
7afe335a
EBE		 5164}
5165
5166static int
5167devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg,
5168 struct netlink_callback *cb)
5169{
5170 struct devlink_health_reporter *reporter;
5171 struct devlink *devlink;
5172 int start = cb->args[0];
5173 int idx = 0;
5174 int err;
5175
5176 mutex_lock(&devlink_mutex);
5177 list_for_each_entry(devlink, &devlink_list, list) {
5178 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
5179 continue;
b587bdaf 5180 mutex_lock(&devlink->reporters_lock);
7afe335a
EBE		 5181 list_for_each_entry(reporter, &devlink->reporter_list,
5182 list) {
5183 if (idx < start) {
5184 idx++;
5185 continue;
5186 }
5187 err = devlink_nl_health_reporter_fill(msg, devlink,
5188 reporter,
5189 DEVLINK_CMD_HEALTH_REPORTER_GET,
5190 NETLINK_CB(cb->skb).portid,
5191 cb->nlh->nlmsg_seq,
5192 NLM_F_MULTI);
5193 if (err) {
b587bdaf 5194 mutex_unlock(&devlink->reporters_lock);
7afe335a
EBE		 5195 goto out;
5196 }
5197 idx++;
5198 }
b587bdaf 5199 mutex_unlock(&devlink->reporters_lock);
7afe335a
EBE		 5200 }
5201out:
5202 mutex_unlock(&devlink_mutex);
5203
5204 cb->args[0] = idx;
5205 return msg->len;
5206}
5207
a1e55ec0
EBE		 5208static int
5209devlink_nl_cmd_health_reporter_set_doit(struct sk_buff *skb,
5210 struct genl_info *info)
5211{
5212 struct devlink *devlink = info->user_ptr[0];
5213 struct devlink_health_reporter *reporter;
b587bdaf 5214 int err;
a1e55ec0
EBE		 5215
5216 reporter = devlink_health_reporter_get_from_info(devlink, info);
5217 if (!reporter)
5218 return -EINVAL;
5219
5220 if (!reporter->ops->recover &&
5221 (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] ||
b587bdaf
MS		 5222 info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])) {
5223 err = -EOPNOTSUPP;
5224 goto out;
5225 }
a1e55ec0
EBE		 5226
5227 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD])
5228 reporter->graceful_period =
5229 nla_get_u64(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD]);
5230
5231 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])
5232 reporter->auto_recover =
5233 nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER]);
5234
b587bdaf 5235 devlink_health_reporter_put(reporter);
a1e55ec0 5236 return 0;
b587bdaf
MS		 5237out:
5238 devlink_health_reporter_put(reporter);
5239 return err;
a1e55ec0
EBE		 5240}
5241
20a0943a
EBE		 5242static int devlink_nl_cmd_health_reporter_recover_doit(struct sk_buff *skb,
5243 struct genl_info *info)
5244{
5245 struct devlink *devlink = info->user_ptr[0];
5246 struct devlink_health_reporter *reporter;
b587bdaf 5247 int err;
20a0943a
EBE		 5248
5249 reporter = devlink_health_reporter_get_from_info(devlink, info);
5250 if (!reporter)
5251 return -EINVAL;
5252
e7a98105 5253 err = devlink_health_reporter_recover(reporter, NULL, info->extack);
b587bdaf
MS		 5254
5255 devlink_health_reporter_put(reporter);
5256 return err;
20a0943a
EBE		 5257}
5258
fca42a27
EBE		 5259static int devlink_nl_cmd_health_reporter_diagnose_doit(struct sk_buff *skb,
5260 struct genl_info *info)
5261{
5262 struct devlink *devlink = info->user_ptr[0];
5263 struct devlink_health_reporter *reporter;
5264 struct devlink_fmsg *fmsg;
5265 int err;
5266
5267 reporter = devlink_health_reporter_get_from_info(devlink, info);
5268 if (!reporter)
5269 return -EINVAL;
5270
b587bdaf
MS		 5271 if (!reporter->ops->diagnose) {
5272 devlink_health_reporter_put(reporter);
fca42a27 5273 return -EOPNOTSUPP;
b587bdaf 5274 }
fca42a27
EBE		 5275
5276 fmsg = devlink_fmsg_alloc();
b587bdaf
MS		 5277 if (!fmsg) {
5278 devlink_health_reporter_put(reporter);
fca42a27 5279 return -ENOMEM;
b587bdaf 5280 }
fca42a27
EBE		 5281
5282 err = devlink_fmsg_obj_nest_start(fmsg);
5283 if (err)
5284 goto out;
5285
e7a98105 5286 err = reporter->ops->diagnose(reporter, fmsg, info->extack);
fca42a27
EBE		 5287 if (err)
5288 goto out;
5289
5290 err = devlink_fmsg_obj_nest_end(fmsg);
5291 if (err)
5292 goto out;
5293
5294 err = devlink_fmsg_snd(fmsg, info,
5295 DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE, 0);
5296
5297out:
5298 devlink_fmsg_free(fmsg);
b587bdaf 5299 devlink_health_reporter_put(reporter);
fca42a27
EBE		 5300 return err;
5301}
5302
e44ef4e4
AL		 5303static int
5304devlink_nl_cmd_health_reporter_dump_get_dumpit(struct sk_buff *skb,
5305 struct netlink_callback *cb)
35455e23 5306{
35455e23 5307 struct devlink_health_reporter *reporter;
e44ef4e4 5308 u64 start = cb->args[0];
35455e23
EBE		 5309 int err;
5310
e44ef4e4 5311 reporter = devlink_health_reporter_get_from_cb(cb);
35455e23
EBE		 5312 if (!reporter)
5313 return -EINVAL;
5314
b587bdaf 5315 if (!reporter->ops->dump) {
e44ef4e4
AL		 5316 err = -EOPNOTSUPP;
5317 goto out;
b587bdaf 5318 }
35455e23 5319 mutex_lock(&reporter->dump_lock);
e44ef4e4 5320 if (!start) {
e7a98105 5321 err = devlink_health_do_dump(reporter, NULL, cb->extack);
e44ef4e4
AL		 5322 if (err)
5323 goto unlock;
5324 cb->args[1] = reporter->dump_ts;
5325 }
5326 if (!reporter->dump_fmsg || cb->args[1] != reporter->dump_ts) {
5327 NL_SET_ERR_MSG_MOD(cb->extack, "Dump trampled, please retry");
5328 err = -EAGAIN;
5329 goto unlock;
5330 }
35455e23 5331
e44ef4e4
AL		 5332 err = devlink_fmsg_dumpit(reporter->dump_fmsg, skb, cb,
5333 DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET);
5334unlock:
35455e23 5335 mutex_unlock(&reporter->dump_lock);
e44ef4e4 5336out:
b587bdaf 5337 devlink_health_reporter_put(reporter);
35455e23
EBE		 5338 return err;
5339}
5340
5341static int
5342devlink_nl_cmd_health_reporter_dump_clear_doit(struct sk_buff *skb,
5343 struct genl_info *info)
5344{
5345 struct devlink *devlink = info->user_ptr[0];
5346 struct devlink_health_reporter *reporter;
5347
5348 reporter = devlink_health_reporter_get_from_info(devlink, info);
5349 if (!reporter)
5350 return -EINVAL;
5351
b587bdaf
MS		 5352 if (!reporter->ops->dump) {
5353 devlink_health_reporter_put(reporter);
35455e23 5354 return -EOPNOTSUPP;
b587bdaf 5355 }
35455e23
EBE		 5356
5357 mutex_lock(&reporter->dump_lock);
5358 devlink_health_dump_clear(reporter);
5359 mutex_unlock(&reporter->dump_lock);
b587bdaf 5360 devlink_health_reporter_put(reporter);
35455e23
EBE		 5361 return 0;
5362}
5363
0f420b6c
IS		 5364struct devlink_stats {
5365 u64 rx_bytes;
5366 u64 rx_packets;
5367 struct u64_stats_sync syncp;
5368};
5369
5370/**
5371 * struct devlink_trap_group_item - Packet trap group attributes.
5372 * @group: Immutable packet trap group attributes.
5373 * @refcount: Number of trap items using the group.
5374 * @list: trap_group_list member.
5375 * @stats: Trap group statistics.
5376 *
5377 * Describes packet trap group attributes. Created by devlink during trap
5378 * registration.
5379 */
5380struct devlink_trap_group_item {
5381 const struct devlink_trap_group *group;
5382 refcount_t refcount;
5383 struct list_head list;
5384 struct devlink_stats __percpu *stats;
5385};
5386
5387/**
5388 * struct devlink_trap_item - Packet trap attributes.
5389 * @trap: Immutable packet trap attributes.
5390 * @group_item: Associated group item.
5391 * @list: trap_list member.
5392 * @action: Trap action.
5393 * @stats: Trap statistics.
5394 * @priv: Driver private information.
5395 *
5396 * Describes both mutable and immutable packet trap attributes. Created by
5397 * devlink during trap registration and used for all trap related operations.
5398 */
5399struct devlink_trap_item {
5400 const struct devlink_trap *trap;
5401 struct devlink_trap_group_item *group_item;
5402 struct list_head list;
5403 enum devlink_trap_action action;
5404 struct devlink_stats __percpu *stats;
5405 void *priv;
5406};
5407
5408static struct devlink_trap_item *
5409devlink_trap_item_lookup(struct devlink *devlink, const char *name)
5410{
5411 struct devlink_trap_item *trap_item;
5412
5413 list_for_each_entry(trap_item, &devlink->trap_list, list) {
5414 if (!strcmp(trap_item->trap->name, name))
5415 return trap_item;
5416 }
5417
5418 return NULL;
5419}
5420
5421static struct devlink_trap_item *
5422devlink_trap_item_get_from_info(struct devlink *devlink,
5423 struct genl_info *info)
5424{
5425 struct nlattr *attr;
5426
5427 if (!info->attrs[DEVLINK_ATTR_TRAP_NAME])
5428 return NULL;
5429 attr = info->attrs[DEVLINK_ATTR_TRAP_NAME];
5430
5431 return devlink_trap_item_lookup(devlink, nla_data(attr));
5432}
5433
5434static int
5435devlink_trap_action_get_from_info(struct genl_info *info,
5436 enum devlink_trap_action *p_trap_action)
5437{
5438 u8 val;
5439
5440 val = nla_get_u8(info->attrs[DEVLINK_ATTR_TRAP_ACTION]);
5441 switch (val) {
5442 case DEVLINK_TRAP_ACTION_DROP: /* fall-through */
5443 case DEVLINK_TRAP_ACTION_TRAP:
5444 *p_trap_action = val;
5445 break;
5446 default:
5447 return -EINVAL;
5448 }
5449
5450 return 0;
5451}
5452
5453static int devlink_trap_metadata_put(struct sk_buff *msg,
5454 const struct devlink_trap *trap)
5455{
5456 struct nlattr *attr;
5457
5458 attr = nla_nest_start(msg, DEVLINK_ATTR_TRAP_METADATA);
5459 if (!attr)
5460 return -EMSGSIZE;
5461
5462 if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_IN_PORT) &&
5463 nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_IN_PORT))
5464 goto nla_put_failure;
5465
5466 nla_nest_end(msg, attr);
5467
5468 return 0;
5469
5470nla_put_failure:
5471 nla_nest_cancel(msg, attr);
5472 return -EMSGSIZE;
5473}
5474
5475static void devlink_trap_stats_read(struct devlink_stats __percpu *trap_stats,
5476 struct devlink_stats *stats)
5477{
5478 int i;
5479
5480 memset(stats, 0, sizeof(*stats));
5481 for_each_possible_cpu(i) {
5482 struct devlink_stats *cpu_stats;
5483 u64 rx_packets, rx_bytes;
5484 unsigned int start;
5485
5486 cpu_stats = per_cpu_ptr(trap_stats, i);
5487 do {
5488 start = u64_stats_fetch_begin_irq(&cpu_stats->syncp);
5489 rx_packets = cpu_stats->rx_packets;
5490 rx_bytes = cpu_stats->rx_bytes;
5491 } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start));
5492
5493 stats->rx_packets += rx_packets;
5494 stats->rx_bytes += rx_bytes;
5495 }
5496}
5497
5498static int devlink_trap_stats_put(struct sk_buff *msg,
5499 struct devlink_stats __percpu *trap_stats)
5500{
5501 struct devlink_stats stats;
5502 struct nlattr *attr;
5503
5504 devlink_trap_stats_read(trap_stats, &stats);
5505
5506 attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
5507 if (!attr)
5508 return -EMSGSIZE;
5509
5510 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_PACKETS,
5511 stats.rx_packets, DEVLINK_ATTR_PAD))
5512 goto nla_put_failure;
5513
5514 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_BYTES,
5515 stats.rx_bytes, DEVLINK_ATTR_PAD))
5516 goto nla_put_failure;
5517
5518 nla_nest_end(msg, attr);
5519
5520 return 0;
5521
5522nla_put_failure:
5523 nla_nest_cancel(msg, attr);
5524 return -EMSGSIZE;
5525}
5526
5527static int devlink_nl_trap_fill(struct sk_buff *msg, struct devlink *devlink,
5528 const struct devlink_trap_item *trap_item,
5529 enum devlink_command cmd, u32 portid, u32 seq,
5530 int flags)
5531{
5532 struct devlink_trap_group_item *group_item = trap_item->group_item;
5533 void *hdr;
5534 int err;
5535
5536 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
5537 if (!hdr)
5538 return -EMSGSIZE;
5539
5540 if (devlink_nl_put_handle(msg, devlink))
5541 goto nla_put_failure;
5542
5543 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
5544 group_item->group->name))
5545 goto nla_put_failure;
5546
5547 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_NAME, trap_item->trap->name))
5548 goto nla_put_failure;
5549
5550 if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_TYPE, trap_item->trap->type))
5551 goto nla_put_failure;
5552
5553 if (trap_item->trap->generic &&
5554 nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
5555 goto nla_put_failure;
5556
5557 if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_ACTION, trap_item->action))
5558 goto nla_put_failure;
5559
5560 err = devlink_trap_metadata_put(msg, trap_item->trap);
5561 if (err)
5562 goto nla_put_failure;
5563
5564 err = devlink_trap_stats_put(msg, trap_item->stats);
5565 if (err)
5566 goto nla_put_failure;
5567
5568 genlmsg_end(msg, hdr);
5569
5570 return 0;
5571
5572nla_put_failure:
5573 genlmsg_cancel(msg, hdr);
5574 return -EMSGSIZE;
5575}
5576
5577static int devlink_nl_cmd_trap_get_doit(struct sk_buff *skb,
5578 struct genl_info *info)
5579{
5580 struct netlink_ext_ack *extack = info->extack;
5581 struct devlink *devlink = info->user_ptr[0];
5582 struct devlink_trap_item *trap_item;
5583 struct sk_buff *msg;
5584 int err;
5585
5586 if (list_empty(&devlink->trap_list))
5587 return -EOPNOTSUPP;
5588
5589 trap_item = devlink_trap_item_get_from_info(devlink, info);
5590 if (!trap_item) {
5591 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
5592 return -ENOENT;
5593 }
5594
5595 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5596 if (!msg)
5597 return -ENOMEM;
5598
5599 err = devlink_nl_trap_fill(msg, devlink, trap_item,
5600 DEVLINK_CMD_TRAP_NEW, info->snd_portid,
5601 info->snd_seq, 0);
5602 if (err)
5603 goto err_trap_fill;
5604
5605 return genlmsg_reply(msg, info);
5606
5607err_trap_fill:
5608 nlmsg_free(msg);
5609 return err;
5610}
5611
5612static int devlink_nl_cmd_trap_get_dumpit(struct sk_buff *msg,
5613 struct netlink_callback *cb)
5614{
5615 struct devlink_trap_item *trap_item;
5616 struct devlink *devlink;
5617 int start = cb->args[0];
5618 int idx = 0;
5619 int err;
5620
5621 mutex_lock(&devlink_mutex);
5622 list_for_each_entry(devlink, &devlink_list, list) {
5623 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
5624 continue;
5625 mutex_lock(&devlink->lock);
5626 list_for_each_entry(trap_item, &devlink->trap_list, list) {
5627 if (idx < start) {
5628 idx++;
5629 continue;
5630 }
5631 err = devlink_nl_trap_fill(msg, devlink, trap_item,
5632 DEVLINK_CMD_TRAP_NEW,
5633 NETLINK_CB(cb->skb).portid,
5634 cb->nlh->nlmsg_seq,
5635 NLM_F_MULTI);
5636 if (err) {
5637 mutex_unlock(&devlink->lock);
5638 goto out;
5639 }
5640 idx++;
5641 }
5642 mutex_unlock(&devlink->lock);
5643 }
5644out:
5645 mutex_unlock(&devlink_mutex);
5646
5647 cb->args[0] = idx;
5648 return msg->len;
5649}
5650
5651static int __devlink_trap_action_set(struct devlink *devlink,
5652 struct devlink_trap_item *trap_item,
5653 enum devlink_trap_action trap_action,
5654 struct netlink_ext_ack *extack)
5655{
5656 int err;
5657
5658 if (trap_item->action != trap_action &&
5659 trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP) {
5660 NL_SET_ERR_MSG_MOD(extack, "Cannot change action of non-drop traps. Skipping");
5661 return 0;
5662 }
5663
5664 err = devlink->ops->trap_action_set(devlink, trap_item->trap,
5665 trap_action);
5666 if (err)
5667 return err;
5668
5669 trap_item->action = trap_action;
5670
5671 return 0;
5672}
5673
5674static int devlink_trap_action_set(struct devlink *devlink,
5675 struct devlink_trap_item *trap_item,
5676 struct genl_info *info)
5677{
5678 enum devlink_trap_action trap_action;
5679 int err;
5680
5681 if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
5682 return 0;
5683
5684 err = devlink_trap_action_get_from_info(info, &trap_action);
5685 if (err) {
5686 NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
5687 return -EINVAL;
5688 }
5689
5690 return __devlink_trap_action_set(devlink, trap_item, trap_action,
5691 info->extack);
5692}
5693
5694static int devlink_nl_cmd_trap_set_doit(struct sk_buff *skb,
5695 struct genl_info *info)
5696{
5697 struct netlink_ext_ack *extack = info->extack;
5698 struct devlink *devlink = info->user_ptr[0];
5699 struct devlink_trap_item *trap_item;
5700 int err;
5701
5702 if (list_empty(&devlink->trap_list))
5703 return -EOPNOTSUPP;
5704
5705 trap_item = devlink_trap_item_get_from_info(devlink, info);
5706 if (!trap_item) {
5707 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
5708 return -ENOENT;
5709 }
5710
5711 err = devlink_trap_action_set(devlink, trap_item, info);
5712 if (err)
5713 return err;
5714
5715 return 0;
5716}
5717
5718static struct devlink_trap_group_item *
5719devlink_trap_group_item_lookup(struct devlink *devlink, const char *name)
5720{
5721 struct devlink_trap_group_item *group_item;
5722
5723 list_for_each_entry(group_item, &devlink->trap_group_list, list) {
5724 if (!strcmp(group_item->group->name, name))
5725 return group_item;
5726 }
5727
5728 return NULL;
5729}
5730
5731static struct devlink_trap_group_item *
5732devlink_trap_group_item_get_from_info(struct devlink *devlink,
5733 struct genl_info *info)
5734{
5735 char *name;
5736
5737 if (!info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME])
5738 return NULL;
5739 name = nla_data(info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME]);
5740
5741 return devlink_trap_group_item_lookup(devlink, name);
5742}
5743
5744static int
5745devlink_nl_trap_group_fill(struct sk_buff *msg, struct devlink *devlink,
5746 const struct devlink_trap_group_item *group_item,
5747 enum devlink_command cmd, u32 portid, u32 seq,
5748 int flags)
5749{
5750 void *hdr;
5751 int err;
5752
5753 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
5754 if (!hdr)
5755 return -EMSGSIZE;
5756
5757 if (devlink_nl_put_handle(msg, devlink))
5758 goto nla_put_failure;
5759
5760 if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
5761 group_item->group->name))
5762 goto nla_put_failure;
5763
5764 if (group_item->group->generic &&
5765 nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
5766 goto nla_put_failure;
5767
5768 err = devlink_trap_stats_put(msg, group_item->stats);
5769 if (err)
5770 goto nla_put_failure;
5771
5772 genlmsg_end(msg, hdr);
5773
5774 return 0;
5775
5776nla_put_failure:
5777 genlmsg_cancel(msg, hdr);
5778 return -EMSGSIZE;
5779}
5780
5781static int devlink_nl_cmd_trap_group_get_doit(struct sk_buff *skb,
5782 struct genl_info *info)
5783{
5784 struct netlink_ext_ack *extack = info->extack;
5785 struct devlink *devlink = info->user_ptr[0];
5786 struct devlink_trap_group_item *group_item;
5787 struct sk_buff *msg;
5788 int err;
5789
5790 if (list_empty(&devlink->trap_group_list))
5791 return -EOPNOTSUPP;
5792
5793 group_item = devlink_trap_group_item_get_from_info(devlink, info);
5794 if (!group_item) {
5795 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
5796 return -ENOENT;
5797 }
5798
5799 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5800 if (!msg)
5801 return -ENOMEM;
5802
5803 err = devlink_nl_trap_group_fill(msg, devlink, group_item,
5804 DEVLINK_CMD_TRAP_GROUP_NEW,
5805 info->snd_portid, info->snd_seq, 0);
5806 if (err)
5807 goto err_trap_group_fill;
5808
5809 return genlmsg_reply(msg, info);
5810
5811err_trap_group_fill:
5812 nlmsg_free(msg);
5813 return err;
5814}
5815
5816static int devlink_nl_cmd_trap_group_get_dumpit(struct sk_buff *msg,
5817 struct netlink_callback *cb)
5818{
5819 enum devlink_command cmd = DEVLINK_CMD_TRAP_GROUP_NEW;
5820 struct devlink_trap_group_item *group_item;
5821 u32 portid = NETLINK_CB(cb->skb).portid;
5822 struct devlink *devlink;
5823 int start = cb->args[0];
5824 int idx = 0;
5825 int err;
5826
5827 mutex_lock(&devlink_mutex);
5828 list_for_each_entry(devlink, &devlink_list, list) {
5829 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
5830 continue;
5831 mutex_lock(&devlink->lock);
5832 list_for_each_entry(group_item, &devlink->trap_group_list,
5833 list) {
5834 if (idx < start) {
5835 idx++;
5836 continue;
5837 }
5838 err = devlink_nl_trap_group_fill(msg, devlink,
5839 group_item, cmd,
5840 portid,
5841 cb->nlh->nlmsg_seq,
5842 NLM_F_MULTI);
5843 if (err) {
5844 mutex_unlock(&devlink->lock);
5845 goto out;
5846 }
5847 idx++;
5848 }
5849 mutex_unlock(&devlink->lock);
5850 }
5851out:
5852 mutex_unlock(&devlink_mutex);
5853
5854 cb->args[0] = idx;
5855 return msg->len;
5856}
5857
5858static int
5859__devlink_trap_group_action_set(struct devlink *devlink,
5860 struct devlink_trap_group_item *group_item,
5861 enum devlink_trap_action trap_action,
5862 struct netlink_ext_ack *extack)
5863{
5864 const char *group_name = group_item->group->name;
5865 struct devlink_trap_item *trap_item;
5866 int err;
5867
5868 list_for_each_entry(trap_item, &devlink->trap_list, list) {
5869 if (strcmp(trap_item->trap->group.name, group_name))
5870 continue;
5871 err = __devlink_trap_action_set(devlink, trap_item,
5872 trap_action, extack);
5873 if (err)
5874 return err;
5875 }
5876
5877 return 0;
5878}
5879
5880static int
5881devlink_trap_group_action_set(struct devlink *devlink,
5882 struct devlink_trap_group_item *group_item,
5883 struct genl_info *info)
5884{
5885 enum devlink_trap_action trap_action;
5886 int err;
5887
5888 if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
5889 return 0;
5890
5891 err = devlink_trap_action_get_from_info(info, &trap_action);
5892 if (err) {
5893 NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
5894 return -EINVAL;
5895 }
5896
5897 err = __devlink_trap_group_action_set(devlink, group_item, trap_action,
5898 info->extack);
5899 if (err)
5900 return err;
5901
5902 return 0;
5903}
5904
5905static int devlink_nl_cmd_trap_group_set_doit(struct sk_buff *skb,
5906 struct genl_info *info)
5907{
5908 struct netlink_ext_ack *extack = info->extack;
5909 struct devlink *devlink = info->user_ptr[0];
5910 struct devlink_trap_group_item *group_item;
5911 int err;
5912
5913 if (list_empty(&devlink->trap_group_list))
5914 return -EOPNOTSUPP;
5915
5916 group_item = devlink_trap_group_item_get_from_info(devlink, info);
5917 if (!group_item) {
5918 NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
5919 return -ENOENT;
5920 }
5921
5922 err = devlink_trap_group_action_set(devlink, group_item, info);
5923 if (err)
5924 return err;
5925
5926 return 0;
5927}
5928
bfcd3a46
JP		 5929static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = {
5930 [DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING },
5931 [DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING },
5932 [DEVLINK_ATTR_PORT_INDEX] = { .type = NLA_U32 },
5933 [DEVLINK_ATTR_PORT_TYPE] = { .type = NLA_U16 },
5934 [DEVLINK_ATTR_PORT_SPLIT_COUNT] = { .type = NLA_U32 },
bf797471
JP		 5935 [DEVLINK_ATTR_SB_INDEX] = { .type = NLA_U32 },
5936 [DEVLINK_ATTR_SB_POOL_INDEX] = { .type = NLA_U16 },
5937 [DEVLINK_ATTR_SB_POOL_TYPE] = { .type = NLA_U8 },
5938 [DEVLINK_ATTR_SB_POOL_SIZE] = { .type = NLA_U32 },
5939 [DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE] = { .type = NLA_U8 },
5940 [DEVLINK_ATTR_SB_THRESHOLD] = { .type = NLA_U32 },
5941 [DEVLINK_ATTR_SB_TC_INDEX] = { .type = NLA_U16 },
08f4b591 5942 [DEVLINK_ATTR_ESWITCH_MODE] = { .type = NLA_U16 },
59bfde01 5943 [DEVLINK_ATTR_ESWITCH_INLINE_MODE] = { .type = NLA_U8 },
f43e9b06 5944 [DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = { .type = NLA_U8 },
1555d204
AS		 5945 [DEVLINK_ATTR_DPIPE_TABLE_NAME] = { .type = NLA_NUL_STRING },
5946 [DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED] = { .type = NLA_U8 },
d9f9b9a4
AS		 5947 [DEVLINK_ATTR_RESOURCE_ID] = { .type = NLA_U64},
5948 [DEVLINK_ATTR_RESOURCE_SIZE] = { .type = NLA_U64},
e3b7ca18
MS		 5949 [DEVLINK_ATTR_PARAM_NAME] = { .type = NLA_NUL_STRING },
5950 [DEVLINK_ATTR_PARAM_TYPE] = { .type = NLA_U8 },
5951 [DEVLINK_ATTR_PARAM_VALUE_CMODE] = { .type = NLA_U8 },
d8db7ea5 5952 [DEVLINK_ATTR_REGION_NAME] = { .type = NLA_NUL_STRING },
866319bb 5953 [DEVLINK_ATTR_REGION_SNAPSHOT_ID] = { .type = NLA_U32 },
7afe335a 5954 [DEVLINK_ATTR_HEALTH_REPORTER_NAME] = { .type = NLA_NUL_STRING },
a1e55ec0
EBE		 5955 [DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] = { .type = NLA_U64 },
5956 [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER] = { .type = NLA_U8 },
76726ccb
JK		 5957 [DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME] = { .type = NLA_NUL_STRING },
5958 [DEVLINK_ATTR_FLASH_UPDATE_COMPONENT] = { .type = NLA_NUL_STRING },
0f420b6c
IS		 5959 [DEVLINK_ATTR_TRAP_NAME] = { .type = NLA_NUL_STRING },
5960 [DEVLINK_ATTR_TRAP_ACTION] = { .type = NLA_U8 },
5961 [DEVLINK_ATTR_TRAP_GROUP_NAME] = { .type = NLA_NUL_STRING },
070c63f2
JP		 5962 [DEVLINK_ATTR_NETNS_PID] = { .type = NLA_U32 },
5963 [DEVLINK_ATTR_NETNS_FD] = { .type = NLA_U32 },
5964 [DEVLINK_ATTR_NETNS_ID] = { .type = NLA_U32 },
bfcd3a46
JP		 5965};
5966
5967static const struct genl_ops devlink_nl_ops[] = {
5968 {
5969 .cmd = DEVLINK_CMD_GET,
ef6243ac 5970 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46
JP		 5971 .doit = devlink_nl_cmd_get_doit,
5972 .dumpit = devlink_nl_cmd_get_dumpit,
1fc2257e 5973 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
bfcd3a46
JP		 5974 /* can be retrieved by unprivileged users */
5975 },
5976 {
5977 .cmd = DEVLINK_CMD_PORT_GET,
ef6243ac 5978 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46
JP		 5979 .doit = devlink_nl_cmd_port_get_doit,
5980 .dumpit = devlink_nl_cmd_port_get_dumpit,
bfcd3a46
JP		 5981 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
5982 /* can be retrieved by unprivileged users */
5983 },
5984 {
5985 .cmd = DEVLINK_CMD_PORT_SET,
ef6243ac 5986 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46 5987 .doit = devlink_nl_cmd_port_set_doit,
bfcd3a46
JP		 5988 .flags = GENL_ADMIN_PERM,
5989 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
5990 },
5991 {
5992 .cmd = DEVLINK_CMD_PORT_SPLIT,
ef6243ac 5993 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46 5994 .doit = devlink_nl_cmd_port_split_doit,
bfcd3a46 5995 .flags = GENL_ADMIN_PERM,
2406e7e5
AS		 5996 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
5997 DEVLINK_NL_FLAG_NO_LOCK,
bfcd3a46
JP		 5998 },
5999 {
6000 .cmd = DEVLINK_CMD_PORT_UNSPLIT,
ef6243ac 6001 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bfcd3a46 6002 .doit = devlink_nl_cmd_port_unsplit_doit,
bfcd3a46 6003 .flags = GENL_ADMIN_PERM,
2406e7e5
AS		 6004 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6005 DEVLINK_NL_FLAG_NO_LOCK,
bfcd3a46 6006 },
bf797471
JP		 6007 {
6008 .cmd = DEVLINK_CMD_SB_GET,
ef6243ac 6009 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471
JP		 6010 .doit = devlink_nl_cmd_sb_get_doit,
6011 .dumpit = devlink_nl_cmd_sb_get_dumpit,
bf797471
JP		 6012 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6013 DEVLINK_NL_FLAG_NEED_SB,
6014 /* can be retrieved by unprivileged users */
6015 },
6016 {
6017 .cmd = DEVLINK_CMD_SB_POOL_GET,
ef6243ac 6018 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471
JP		 6019 .doit = devlink_nl_cmd_sb_pool_get_doit,
6020 .dumpit = devlink_nl_cmd_sb_pool_get_dumpit,
bf797471
JP		 6021 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6022 DEVLINK_NL_FLAG_NEED_SB,
6023 /* can be retrieved by unprivileged users */
6024 },
6025 {
6026 .cmd = DEVLINK_CMD_SB_POOL_SET,
ef6243ac 6027 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471 6028 .doit = devlink_nl_cmd_sb_pool_set_doit,
bf797471
JP		 6029 .flags = GENL_ADMIN_PERM,
6030 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6031 DEVLINK_NL_FLAG_NEED_SB,
6032 },
6033 {
6034 .cmd = DEVLINK_CMD_SB_PORT_POOL_GET,
ef6243ac 6035 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471
JP		 6036 .doit = devlink_nl_cmd_sb_port_pool_get_doit,
6037 .dumpit = devlink_nl_cmd_sb_port_pool_get_dumpit,
bf797471
JP		 6038 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
6039 DEVLINK_NL_FLAG_NEED_SB,
6040 /* can be retrieved by unprivileged users */
6041 },
6042 {
6043 .cmd = DEVLINK_CMD_SB_PORT_POOL_SET,
ef6243ac 6044 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471 6045 .doit = devlink_nl_cmd_sb_port_pool_set_doit,
bf797471
JP		 6046 .flags = GENL_ADMIN_PERM,
6047 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
6048 DEVLINK_NL_FLAG_NEED_SB,
6049 },
6050 {
6051 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_GET,
ef6243ac 6052 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471
JP		 6053 .doit = devlink_nl_cmd_sb_tc_pool_bind_get_doit,
6054 .dumpit = devlink_nl_cmd_sb_tc_pool_bind_get_dumpit,
bf797471
JP		 6055 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
6056 DEVLINK_NL_FLAG_NEED_SB,
6057 /* can be retrieved by unprivileged users */
6058 },
6059 {
6060 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_SET,
ef6243ac 6061 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
bf797471 6062 .doit = devlink_nl_cmd_sb_tc_pool_bind_set_doit,
bf797471
JP		 6063 .flags = GENL_ADMIN_PERM,
6064 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
6065 DEVLINK_NL_FLAG_NEED_SB,
6066 },
df38dafd
JP		 6067 {
6068 .cmd = DEVLINK_CMD_SB_OCC_SNAPSHOT,
ef6243ac 6069 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
df38dafd 6070 .doit = devlink_nl_cmd_sb_occ_snapshot_doit,
df38dafd
JP		 6071 .flags = GENL_ADMIN_PERM,
6072 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
2406e7e5 6073 DEVLINK_NL_FLAG_NEED_SB,
df38dafd
JP		 6074 },
6075 {
6076 .cmd = DEVLINK_CMD_SB_OCC_MAX_CLEAR,
ef6243ac 6077 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
df38dafd 6078 .doit = devlink_nl_cmd_sb_occ_max_clear_doit,
df38dafd
JP		 6079 .flags = GENL_ADMIN_PERM,
6080 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
2406e7e5 6081 DEVLINK_NL_FLAG_NEED_SB,
df38dafd 6082 },
08f4b591 6083 {
adf200f3 6084 .cmd = DEVLINK_CMD_ESWITCH_GET,
ef6243ac 6085 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
adf200f3 6086 .doit = devlink_nl_cmd_eswitch_get_doit,
08f4b591
OG		 6087 .flags = GENL_ADMIN_PERM,
6088 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6089 },
6090 {
adf200f3 6091 .cmd = DEVLINK_CMD_ESWITCH_SET,
ef6243ac 6092 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
adf200f3 6093 .doit = devlink_nl_cmd_eswitch_set_doit,
08f4b591 6094 .flags = GENL_ADMIN_PERM,
7ac1cc9a
JK		 6095 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6096 DEVLINK_NL_FLAG_NO_LOCK,
08f4b591 6097 },
1555d204
AS		 6098 {
6099 .cmd = DEVLINK_CMD_DPIPE_TABLE_GET,
ef6243ac 6100 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1555d204 6101 .doit = devlink_nl_cmd_dpipe_table_get,
1555d204 6102 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
67ae686b 6103 /* can be retrieved by unprivileged users */
1555d204
AS		 6104 },
6105 {
6106 .cmd = DEVLINK_CMD_DPIPE_ENTRIES_GET,
ef6243ac 6107 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1555d204 6108 .doit = devlink_nl_cmd_dpipe_entries_get,
1555d204 6109 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
67ae686b 6110 /* can be retrieved by unprivileged users */
1555d204
AS		 6111 },
6112 {
6113 .cmd = DEVLINK_CMD_DPIPE_HEADERS_GET,
ef6243ac 6114 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1555d204 6115 .doit = devlink_nl_cmd_dpipe_headers_get,
1555d204 6116 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
67ae686b 6117 /* can be retrieved by unprivileged users */
1555d204
AS		 6118 },
6119 {
6120 .cmd = DEVLINK_CMD_DPIPE_TABLE_COUNTERS_SET,
ef6243ac 6121 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1555d204 6122 .doit = devlink_nl_cmd_dpipe_table_counters_set,
1555d204
AS		 6123 .flags = GENL_ADMIN_PERM,
6124 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6125 },
d9f9b9a4
AS		 6126 {
6127 .cmd = DEVLINK_CMD_RESOURCE_SET,
ef6243ac 6128 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
d9f9b9a4 6129 .doit = devlink_nl_cmd_resource_set,
d9f9b9a4
AS		 6130 .flags = GENL_ADMIN_PERM,
6131 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6132 },
6133 {
6134 .cmd = DEVLINK_CMD_RESOURCE_DUMP,
ef6243ac 6135 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
d9f9b9a4 6136 .doit = devlink_nl_cmd_resource_dump,
d9f9b9a4 6137 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
67ae686b 6138 /* can be retrieved by unprivileged users */
d9f9b9a4 6139 },
2d8dc5bb
AS		 6140 {
6141 .cmd = DEVLINK_CMD_RELOAD,
ef6243ac 6142 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2d8dc5bb 6143 .doit = devlink_nl_cmd_reload,
2d8dc5bb
AS		 6144 .flags = GENL_ADMIN_PERM,
6145 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6146 DEVLINK_NL_FLAG_NO_LOCK,
6147 },
45f05def
MS		 6148 {
6149 .cmd = DEVLINK_CMD_PARAM_GET,
ef6243ac 6150 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
45f05def
MS		 6151 .doit = devlink_nl_cmd_param_get_doit,
6152 .dumpit = devlink_nl_cmd_param_get_dumpit,
45f05def
MS		 6153 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6154 /* can be retrieved by unprivileged users */
6155 },
e3b7ca18
MS		 6156 {
6157 .cmd = DEVLINK_CMD_PARAM_SET,
ef6243ac 6158 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
e3b7ca18 6159 .doit = devlink_nl_cmd_param_set_doit,
e3b7ca18
MS		 6160 .flags = GENL_ADMIN_PERM,
6161 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6162 },
f4601dee
VV		 6163 {
6164 .cmd = DEVLINK_CMD_PORT_PARAM_GET,
ef6243ac 6165 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
f4601dee
VV		 6166 .doit = devlink_nl_cmd_port_param_get_doit,
6167 .dumpit = devlink_nl_cmd_port_param_get_dumpit,
f4601dee
VV		 6168 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
6169 /* can be retrieved by unprivileged users */
6170 },
9c54873b
VV		 6171 {
6172 .cmd = DEVLINK_CMD_PORT_PARAM_SET,
ef6243ac 6173 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
9c54873b 6174 .doit = devlink_nl_cmd_port_param_set_doit,
9c54873b
VV		 6175 .flags = GENL_ADMIN_PERM,
6176 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
6177 },
d8db7ea5
AV		 6178 {
6179 .cmd = DEVLINK_CMD_REGION_GET,
ef6243ac 6180 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
d8db7ea5
AV		 6181 .doit = devlink_nl_cmd_region_get_doit,
6182 .dumpit = devlink_nl_cmd_region_get_dumpit,
d8db7ea5
AV		 6183 .flags = GENL_ADMIN_PERM,
6184 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6185 },
866319bb
AV		 6186 {
6187 .cmd = DEVLINK_CMD_REGION_DEL,
ef6243ac 6188 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
866319bb 6189 .doit = devlink_nl_cmd_region_del,
866319bb
AV		 6190 .flags = GENL_ADMIN_PERM,
6191 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6192 },
4e54795a
AV		 6193 {
6194 .cmd = DEVLINK_CMD_REGION_READ,
ee85da53
JP		 6195 .validate = GENL_DONT_VALIDATE_STRICT |
6196 GENL_DONT_VALIDATE_DUMP_STRICT,
4e54795a 6197 .dumpit = devlink_nl_cmd_region_read_dumpit,
4e54795a
AV		 6198 .flags = GENL_ADMIN_PERM,
6199 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6200 },
f9cf2288
JK		 6201 {
6202 .cmd = DEVLINK_CMD_INFO_GET,
ef6243ac 6203 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
f9cf2288
JK		 6204 .doit = devlink_nl_cmd_info_get_doit,
6205 .dumpit = devlink_nl_cmd_info_get_dumpit,
f9cf2288
JK		 6206 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6207 /* can be retrieved by unprivileged users */
6208 },
7afe335a
EBE		 6209 {
6210 .cmd = DEVLINK_CMD_HEALTH_REPORTER_GET,
ef6243ac 6211 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
7afe335a
EBE		 6212 .doit = devlink_nl_cmd_health_reporter_get_doit,
6213 .dumpit = devlink_nl_cmd_health_reporter_get_dumpit,
b587bdaf
MS		 6214 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6215 DEVLINK_NL_FLAG_NO_LOCK,
7afe335a
EBE		 6216 /* can be retrieved by unprivileged users */
6217 },
a1e55ec0
EBE		 6218 {
6219 .cmd = DEVLINK_CMD_HEALTH_REPORTER_SET,
ef6243ac 6220 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
a1e55ec0 6221 .doit = devlink_nl_cmd_health_reporter_set_doit,
a1e55ec0 6222 .flags = GENL_ADMIN_PERM,
b587bdaf
MS		 6223 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6224 DEVLINK_NL_FLAG_NO_LOCK,
a1e55ec0 6225 },
20a0943a
EBE		 6226 {
6227 .cmd = DEVLINK_CMD_HEALTH_REPORTER_RECOVER,
ef6243ac 6228 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
20a0943a 6229 .doit = devlink_nl_cmd_health_reporter_recover_doit,
20a0943a 6230 .flags = GENL_ADMIN_PERM,
b587bdaf
MS		 6231 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6232 DEVLINK_NL_FLAG_NO_LOCK,
20a0943a 6233 },
fca42a27
EBE		 6234 {
6235 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE,
ef6243ac 6236 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
fca42a27 6237 .doit = devlink_nl_cmd_health_reporter_diagnose_doit,
fca42a27 6238 .flags = GENL_ADMIN_PERM,
b587bdaf
MS		 6239 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6240 DEVLINK_NL_FLAG_NO_LOCK,
fca42a27 6241 },
35455e23
EBE		 6242 {
6243 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET,
82a843de
JP		 6244 .validate = GENL_DONT_VALIDATE_STRICT |
6245 GENL_DONT_VALIDATE_DUMP_STRICT,
e44ef4e4 6246 .dumpit = devlink_nl_cmd_health_reporter_dump_get_dumpit,
35455e23
EBE		 6247 .flags = GENL_ADMIN_PERM,
6248 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6249 DEVLINK_NL_FLAG_NO_LOCK,
6250 },
6251 {
6252 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_CLEAR,
ef6243ac 6253 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
35455e23 6254 .doit = devlink_nl_cmd_health_reporter_dump_clear_doit,
35455e23
EBE		 6255 .flags = GENL_ADMIN_PERM,
6256 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
6257 DEVLINK_NL_FLAG_NO_LOCK,
6258 },
76726ccb
JK		 6259 {
6260 .cmd = DEVLINK_CMD_FLASH_UPDATE,
ef6243ac 6261 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
76726ccb 6262 .doit = devlink_nl_cmd_flash_update,
76726ccb
JK		 6263 .flags = GENL_ADMIN_PERM,
6264 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6265 },
0f420b6c
IS		 6266 {
6267 .cmd = DEVLINK_CMD_TRAP_GET,
6268 .doit = devlink_nl_cmd_trap_get_doit,
6269 .dumpit = devlink_nl_cmd_trap_get_dumpit,
6270 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6271 /* can be retrieved by unprivileged users */
6272 },
6273 {
6274 .cmd = DEVLINK_CMD_TRAP_SET,
6275 .doit = devlink_nl_cmd_trap_set_doit,
6276 .flags = GENL_ADMIN_PERM,
6277 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6278 },
6279 {
6280 .cmd = DEVLINK_CMD_TRAP_GROUP_GET,
6281 .doit = devlink_nl_cmd_trap_group_get_doit,
6282 .dumpit = devlink_nl_cmd_trap_group_get_dumpit,
6283 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6284 /* can be retrieved by unprivileged users */
6285 },
6286 {
6287 .cmd = DEVLINK_CMD_TRAP_GROUP_SET,
6288 .doit = devlink_nl_cmd_trap_group_set_doit,
6289 .flags = GENL_ADMIN_PERM,
6290 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
6291 },
bfcd3a46
JP		 6292};
6293
56989f6d 6294static struct genl_family devlink_nl_family __ro_after_init = {
489111e5
JB		 6295 .name = DEVLINK_GENL_NAME,
6296 .version = DEVLINK_GENL_VERSION,
6297 .maxattr = DEVLINK_ATTR_MAX,
3b0f31f2 6298 .policy = devlink_nl_policy,
489111e5
JB		 6299 .netnsok = true,
6300 .pre_doit = devlink_nl_pre_doit,
6301 .post_doit = devlink_nl_post_doit,
6302 .module = THIS_MODULE,
6303 .ops = devlink_nl_ops,
6304 .n_ops = ARRAY_SIZE(devlink_nl_ops),
6305 .mcgrps = devlink_nl_mcgrps,
6306 .n_mcgrps = ARRAY_SIZE(devlink_nl_mcgrps),
6307};
6308
bfcd3a46
JP		 6309/**
6310 * devlink_alloc - Allocate new devlink instance resources
6311 *
6312 * @ops: ops
6313 * @priv_size: size of user private data
6314 *
6315 * Allocate new devlink instance resources, including devlink index
6316 * and name.
6317 */
6318struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size)
6319{
6320 struct devlink *devlink;
6321
be6fe1d8
JK		 6322 if (WARN_ON(!ops))
6323 return NULL;
6324
bfcd3a46
JP		 6325 devlink = kzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL);
6326 if (!devlink)
6327 return NULL;
6328 devlink->ops = ops;
8273fd84 6329 __devlink_net_set(devlink, &init_net);
bfcd3a46 6330 INIT_LIST_HEAD(&devlink->port_list);
bf797471 6331 INIT_LIST_HEAD(&devlink->sb_list);
1555d204 6332 INIT_LIST_HEAD_RCU(&devlink->dpipe_table_list);
d9f9b9a4 6333 INIT_LIST_HEAD(&devlink->resource_list);
eabaef18 6334 INIT_LIST_HEAD(&devlink->param_list);
b16ebe92 6335 INIT_LIST_HEAD(&devlink->region_list);
a0bdcc59 6336 INIT_LIST_HEAD(&devlink->reporter_list);
0f420b6c
IS		 6337 INIT_LIST_HEAD(&devlink->trap_list);
6338 INIT_LIST_HEAD(&devlink->trap_group_list);
2406e7e5 6339 mutex_init(&devlink->lock);
b587bdaf 6340 mutex_init(&devlink->reporters_lock);
bfcd3a46
JP		 6341 return devlink;
6342}
6343EXPORT_SYMBOL_GPL(devlink_alloc);
6344
6345/**
6346 * devlink_register - Register devlink instance
6347 *
6348 * @devlink: devlink
eeaadd82 6349 * @dev: parent device
bfcd3a46
JP		 6350 */
6351int devlink_register(struct devlink *devlink, struct device *dev)
6352{
6353 mutex_lock(&devlink_mutex);
6354 devlink->dev = dev;
8273fd84 6355 devlink->registered = true;
bfcd3a46
JP		 6356 list_add_tail(&devlink->list, &devlink_list);
6357 devlink_notify(devlink, DEVLINK_CMD_NEW);
6358 mutex_unlock(&devlink_mutex);
6359 return 0;
6360}
6361EXPORT_SYMBOL_GPL(devlink_register);
6362
6363/**
6364 * devlink_unregister - Unregister devlink instance
6365 *
6366 * @devlink: devlink
6367 */
6368void devlink_unregister(struct devlink *devlink)
6369{
6370 mutex_lock(&devlink_mutex);
a0c76345
JP		 6371 WARN_ON(devlink_reload_supported(devlink) &&
6372 devlink->reload_enabled);
bfcd3a46
JP		 6373 devlink_notify(devlink, DEVLINK_CMD_DEL);
6374 list_del(&devlink->list);
6375 mutex_unlock(&devlink_mutex);
6376}
6377EXPORT_SYMBOL_GPL(devlink_unregister);
6378
a0c76345
JP		 6379/**
6380 * devlink_reload_enable - Enable reload of devlink instance
6381 *
6382 * @devlink: devlink
6383 *
6384 * Should be called at end of device initialization
6385 * process when reload operation is supported.
6386 */
6387void devlink_reload_enable(struct devlink *devlink)
6388{
6389 mutex_lock(&devlink_mutex);
6390 devlink->reload_enabled = true;
6391 mutex_unlock(&devlink_mutex);
6392}
6393EXPORT_SYMBOL_GPL(devlink_reload_enable);
6394
6395/**
6396 * devlink_reload_disable - Disable reload of devlink instance
6397 *
6398 * @devlink: devlink
6399 *
6400 * Should be called at the beginning of device cleanup
6401 * process when reload operation is supported.
6402 */
6403void devlink_reload_disable(struct devlink *devlink)
6404{
6405 mutex_lock(&devlink_mutex);
6406 /* Mutex is taken which ensures that no reload operation is in
6407 * progress while setting up forbidded flag.
6408 */
6409 devlink->reload_enabled = false;
6410 mutex_unlock(&devlink_mutex);
6411}
6412EXPORT_SYMBOL_GPL(devlink_reload_disable);
6413
bfcd3a46
JP		 6414/**
6415 * devlink_free - Free devlink instance resources
6416 *
6417 * @devlink: devlink
6418 */
6419void devlink_free(struct devlink *devlink)
6420{
b587bdaf 6421 mutex_destroy(&devlink->reporters_lock);
375cf8c6 6422 mutex_destroy(&devlink->lock);
0f420b6c
IS		 6423 WARN_ON(!list_empty(&devlink->trap_group_list));
6424 WARN_ON(!list_empty(&devlink->trap_list));
b904aada
PP		 6425 WARN_ON(!list_empty(&devlink->reporter_list));
6426 WARN_ON(!list_empty(&devlink->region_list));
6427 WARN_ON(!list_empty(&devlink->param_list));
6428 WARN_ON(!list_empty(&devlink->resource_list));
6429 WARN_ON(!list_empty(&devlink->dpipe_table_list));
6430 WARN_ON(!list_empty(&devlink->sb_list));
6431 WARN_ON(!list_empty(&devlink->port_list));
6432
bfcd3a46
JP		 6433 kfree(devlink);
6434}
6435EXPORT_SYMBOL_GPL(devlink_free);
6436
136bf27f
JP		 6437static void devlink_port_type_warn(struct work_struct *work)
6438{
6439 WARN(true, "Type was not set for devlink port.");
6440}
6441
6442static bool devlink_port_type_should_warn(struct devlink_port *devlink_port)
6443{
6444 /* Ignore CPU and DSA flavours. */
6445 return devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_CPU &&
6446 devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_DSA;
6447}
6448
4c582234 6449#define DEVLINK_PORT_TYPE_WARN_TIMEOUT (HZ * 3600)
136bf27f
JP		 6450
6451static void devlink_port_type_warn_schedule(struct devlink_port *devlink_port)
6452{
6453 if (!devlink_port_type_should_warn(devlink_port))
6454 return;
6455 /* Schedule a work to WARN in case driver does not set port
6456 * type within timeout.
6457 */
6458 schedule_delayed_work(&devlink_port->type_warn_dw,
6459 DEVLINK_PORT_TYPE_WARN_TIMEOUT);
6460}
6461
6462static void devlink_port_type_warn_cancel(struct devlink_port *devlink_port)
6463{
6464 if (!devlink_port_type_should_warn(devlink_port))
6465 return;
6466 cancel_delayed_work_sync(&devlink_port->type_warn_dw);
6467}
6468
bfcd3a46
JP		 6469/**
6470 * devlink_port_register - Register devlink port
6471 *
6472 * @devlink: devlink
6473 * @devlink_port: devlink port
eeaadd82 6474 * @port_index: driver-specific numerical identifier of the port
bfcd3a46
JP		 6475 *
6476 * Register devlink port with provided port index. User can use
6477 * any indexing, even hw-related one. devlink_port structure
6478 * is convenient to be embedded inside user driver private structure.
6479 * Note that the caller should take care of zeroing the devlink_port
6480 * structure.
6481 */
6482int devlink_port_register(struct devlink *devlink,
6483 struct devlink_port *devlink_port,
6484 unsigned int port_index)
6485{
2406e7e5 6486 mutex_lock(&devlink->lock);
bfcd3a46 6487 if (devlink_port_index_exists(devlink, port_index)) {
2406e7e5 6488 mutex_unlock(&devlink->lock);
bfcd3a46
JP		 6489 return -EEXIST;
6490 }
6491 devlink_port->devlink = devlink;
6492 devlink_port->index = port_index;
bfcd3a46 6493 devlink_port->registered = true;
b8f97554 6494 spin_lock_init(&devlink_port->type_lock);
bfcd3a46 6495 list_add_tail(&devlink_port->list, &devlink->port_list);
39e6160e 6496 INIT_LIST_HEAD(&devlink_port->param_list);
2406e7e5 6497 mutex_unlock(&devlink->lock);
136bf27f
JP		 6498 INIT_DELAYED_WORK(&devlink_port->type_warn_dw, &devlink_port_type_warn);
6499 devlink_port_type_warn_schedule(devlink_port);
bfcd3a46
JP		 6500 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
6501 return 0;
6502}
6503EXPORT_SYMBOL_GPL(devlink_port_register);
6504
6505/**
6506 * devlink_port_unregister - Unregister devlink port
6507 *
6508 * @devlink_port: devlink port
6509 */
6510void devlink_port_unregister(struct devlink_port *devlink_port)
6511{
2406e7e5
AS		 6512 struct devlink *devlink = devlink_port->devlink;
6513
136bf27f 6514 devlink_port_type_warn_cancel(devlink_port);
bfcd3a46 6515 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
2406e7e5 6516 mutex_lock(&devlink->lock);
bfcd3a46 6517 list_del(&devlink_port->list);
2406e7e5 6518 mutex_unlock(&devlink->lock);
bfcd3a46
JP		 6519}
6520EXPORT_SYMBOL_GPL(devlink_port_unregister);
6521
6522static void __devlink_port_type_set(struct devlink_port *devlink_port,
6523 enum devlink_port_type type,
6524 void *type_dev)
6525{
2b239e70
JP		 6526 if (WARN_ON(!devlink_port->registered))
6527 return;
136bf27f 6528 devlink_port_type_warn_cancel(devlink_port);
0f420b6c 6529 spin_lock_bh(&devlink_port->type_lock);
bfcd3a46
JP		 6530 devlink_port->type = type;
6531 devlink_port->type_dev = type_dev;
0f420b6c 6532 spin_unlock_bh(&devlink_port->type_lock);
bfcd3a46
JP		 6533 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
6534}
6535
6536/**
6537 * devlink_port_type_eth_set - Set port type to Ethernet
6538 *
6539 * @devlink_port: devlink port
6540 * @netdev: related netdevice
6541 */
6542void devlink_port_type_eth_set(struct devlink_port *devlink_port,
6543 struct net_device *netdev)
6544{
119c0b57
JP		 6545 const struct net_device_ops *ops = netdev->netdev_ops;
6546
746364f2
JP		 6547 /* If driver registers devlink port, it should set devlink port
6548 * attributes accordingly so the compat functions are called
6549 * and the original ops are not used.
6550 */
119c0b57 6551 if (ops->ndo_get_phys_port_name) {
746364f2
JP		 6552 /* Some drivers use the same set of ndos for netdevs
6553 * that have devlink_port registered and also for
6554 * those who don't. Make sure that ndo_get_phys_port_name
6555 * returns -EOPNOTSUPP here in case it is defined.
6556 * Warn if not.
6557 */
746364f2
JP		 6558 char name[IFNAMSIZ];
6559 int err;
6560
6561 err = ops->ndo_get_phys_port_name(netdev, name, sizeof(name));
6562 WARN_ON(err != -EOPNOTSUPP);
6563 }
119c0b57
JP		 6564 if (ops->ndo_get_port_parent_id) {
6565 /* Some drivers use the same set of ndos for netdevs
6566 * that have devlink_port registered and also for
6567 * those who don't. Make sure that ndo_get_port_parent_id
6568 * returns -EOPNOTSUPP here in case it is defined.
6569 * Warn if not.
6570 */
6571 struct netdev_phys_item_id ppid;
6572 int err;
6573
6574 err = ops->ndo_get_port_parent_id(netdev, &ppid);
6575 WARN_ON(err != -EOPNOTSUPP);
6576 }
773b1f38 6577 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH, netdev);
bfcd3a46
JP		 6578}
6579EXPORT_SYMBOL_GPL(devlink_port_type_eth_set);
6580
6581/**
6582 * devlink_port_type_ib_set - Set port type to InfiniBand
6583 *
6584 * @devlink_port: devlink port
6585 * @ibdev: related IB device
6586 */
6587void devlink_port_type_ib_set(struct devlink_port *devlink_port,
6588 struct ib_device *ibdev)
6589{
773b1f38 6590 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_IB, ibdev);
bfcd3a46
JP		 6591}
6592EXPORT_SYMBOL_GPL(devlink_port_type_ib_set);
6593
6594/**
6595 * devlink_port_type_clear - Clear port type
6596 *
6597 * @devlink_port: devlink port
6598 */
6599void devlink_port_type_clear(struct devlink_port *devlink_port)
6600{
773b1f38 6601 __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET, NULL);
136bf27f 6602 devlink_port_type_warn_schedule(devlink_port);
bfcd3a46
JP		 6603}
6604EXPORT_SYMBOL_GPL(devlink_port_type_clear);
6605
378ef01b
PP		 6606static int __devlink_port_attrs_set(struct devlink_port *devlink_port,
6607 enum devlink_port_flavour flavour,
6608 const unsigned char *switch_id,
6609 unsigned char switch_id_len)
6610{
6611 struct devlink_port_attrs *attrs = &devlink_port->attrs;
6612
6613 if (WARN_ON(devlink_port->registered))
6614 return -EEXIST;
6615 attrs->set = true;
6616 attrs->flavour = flavour;
6617 if (switch_id) {
6618 attrs->switch_port = true;
6619 if (WARN_ON(switch_id_len > MAX_PHYS_ITEM_ID_LEN))
6620 switch_id_len = MAX_PHYS_ITEM_ID_LEN;
6621 memcpy(attrs->switch_id.id, switch_id, switch_id_len);
6622 attrs->switch_id.id_len = switch_id_len;
6623 } else {
6624 attrs->switch_port = false;
6625 }
6626 return 0;
6627}
6628
bfcd3a46 6629/**
b9ffcbaf 6630 * devlink_port_attrs_set - Set port attributes
bfcd3a46
JP		 6631 *
6632 * @devlink_port: devlink port
5ec1380a 6633 * @flavour: flavour of the port
b9ffcbaf
JP		 6634 * @port_number: number of the port that is facing user, for example
6635 * the front panel port number
6636 * @split: indicates if this is split port
6637 * @split_subport_number: if the port is split, this is the number
6638 * of subport.
bec5267c
JP		 6639 * @switch_id: if the port is part of switch, this is buffer with ID,
6640 * otwerwise this is NULL
6641 * @switch_id_len: length of the switch_id buffer
bfcd3a46 6642 */
b9ffcbaf 6643void devlink_port_attrs_set(struct devlink_port *devlink_port,
5ec1380a 6644 enum devlink_port_flavour flavour,
b9ffcbaf 6645 u32 port_number, bool split,
bec5267c
JP		 6646 u32 split_subport_number,
6647 const unsigned char *switch_id,
6648 unsigned char switch_id_len)
bfcd3a46 6649{
b9ffcbaf 6650 struct devlink_port_attrs *attrs = &devlink_port->attrs;
378ef01b 6651 int ret;
b9ffcbaf 6652
378ef01b
PP		 6653 ret = __devlink_port_attrs_set(devlink_port, flavour,
6654 switch_id, switch_id_len);
6655 if (ret)
45b86112 6656 return;
b9ffcbaf 6657 attrs->split = split;
378ef01b
PP		 6658 attrs->phys.port_number = port_number;
6659 attrs->phys.split_subport_number = split_subport_number;
bfcd3a46 6660}
b9ffcbaf 6661EXPORT_SYMBOL_GPL(devlink_port_attrs_set);
bfcd3a46 6662
98fd2d65
PP		 6663/**
6664 * devlink_port_attrs_pci_pf_set - Set PCI PF port attributes
6665 *
6666 * @devlink_port: devlink port
6667 * @pf: associated PF for the devlink port instance
6668 * @switch_id: if the port is part of switch, this is buffer with ID,
6669 * otherwise this is NULL
6670 * @switch_id_len: length of the switch_id buffer
6671 */
6672void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port,
6673 const unsigned char *switch_id,
6674 unsigned char switch_id_len, u16 pf)
6675{
6676 struct devlink_port_attrs *attrs = &devlink_port->attrs;
6677 int ret;
6678
6679 ret = __devlink_port_attrs_set(devlink_port,
6680 DEVLINK_PORT_FLAVOUR_PCI_PF,
6681 switch_id, switch_id_len);
6682 if (ret)
6683 return;
6684
6685 attrs->pci_pf.pf = pf;
6686}
6687EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_pf_set);
6688
e41b6bf3
PP		 6689/**
6690 * devlink_port_attrs_pci_vf_set - Set PCI VF port attributes
6691 *
6692 * @devlink_port: devlink port
6693 * @pf: associated PF for the devlink port instance
6694 * @vf: associated VF of a PF for the devlink port instance
6695 * @switch_id: if the port is part of switch, this is buffer with ID,
6696 * otherwise this is NULL
6697 * @switch_id_len: length of the switch_id buffer
6698 */
6699void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port,
6700 const unsigned char *switch_id,
6701 unsigned char switch_id_len,
6702 u16 pf, u16 vf)
6703{
6704 struct devlink_port_attrs *attrs = &devlink_port->attrs;
6705 int ret;
6706
6707 ret = __devlink_port_attrs_set(devlink_port,
6708 DEVLINK_PORT_FLAVOUR_PCI_VF,
6709 switch_id, switch_id_len);
6710 if (ret)
6711 return;
6712 attrs->pci_vf.pf = pf;
6713 attrs->pci_vf.vf = vf;
6714}
6715EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_vf_set);
6716
af3836df
JP		 6717static int __devlink_port_phys_port_name_get(struct devlink_port *devlink_port,
6718 char *name, size_t len)
08474c1a
JP		 6719{
6720 struct devlink_port_attrs *attrs = &devlink_port->attrs;
6721 int n = 0;
6722
6723 if (!attrs->set)
6724 return -EOPNOTSUPP;
6725
6726 switch (attrs->flavour) {
6727 case DEVLINK_PORT_FLAVOUR_PHYSICAL:
6728 if (!attrs->split)
378ef01b 6729 n = snprintf(name, len, "p%u", attrs->phys.port_number);
08474c1a 6730 else
378ef01b
PP		 6731 n = snprintf(name, len, "p%us%u",
6732 attrs->phys.port_number,
6733 attrs->phys.split_subport_number);
08474c1a
JP		 6734 break;
6735 case DEVLINK_PORT_FLAVOUR_CPU:
6736 case DEVLINK_PORT_FLAVOUR_DSA:
6737 /* As CPU and DSA ports do not have a netdevice associated
6738 * case should not ever happen.
6739 */
6740 WARN_ON(1);
6741 return -EINVAL;
98fd2d65
PP		 6742 case DEVLINK_PORT_FLAVOUR_PCI_PF:
6743 n = snprintf(name, len, "pf%u", attrs->pci_pf.pf);
6744 break;
e41b6bf3
PP		 6745 case DEVLINK_PORT_FLAVOUR_PCI_VF:
6746 n = snprintf(name, len, "pf%uvf%u",
6747 attrs->pci_vf.pf, attrs->pci_vf.vf);
6748 break;
08474c1a
JP		 6749 }
6750
6751 if (n >= len)
6752 return -EINVAL;
6753
6754 return 0;
6755}
af3836df 6756
bf797471
JP		 6757int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
6758 u32 size, u16 ingress_pools_count,
6759 u16 egress_pools_count, u16 ingress_tc_count,
6760 u16 egress_tc_count)
6761{
6762 struct devlink_sb *devlink_sb;
6763 int err = 0;
6764
2406e7e5 6765 mutex_lock(&devlink->lock);
bf797471
JP		 6766 if (devlink_sb_index_exists(devlink, sb_index)) {
6767 err = -EEXIST;
6768 goto unlock;
6769 }
6770
6771 devlink_sb = kzalloc(sizeof(*devlink_sb), GFP_KERNEL);
6772 if (!devlink_sb) {
6773 err = -ENOMEM;
6774 goto unlock;
6775 }
6776 devlink_sb->index = sb_index;
6777 devlink_sb->size = size;
6778 devlink_sb->ingress_pools_count = ingress_pools_count;
6779 devlink_sb->egress_pools_count = egress_pools_count;
6780 devlink_sb->ingress_tc_count = ingress_tc_count;
6781 devlink_sb->egress_tc_count = egress_tc_count;
6782 list_add_tail(&devlink_sb->list, &devlink->sb_list);
6783unlock:
2406e7e5 6784 mutex_unlock(&devlink->lock);
bf797471
JP		 6785 return err;
6786}
6787EXPORT_SYMBOL_GPL(devlink_sb_register);
6788
6789void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index)
6790{
6791 struct devlink_sb *devlink_sb;
6792
2406e7e5 6793 mutex_lock(&devlink->lock);
bf797471
JP		 6794 devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
6795 WARN_ON(!devlink_sb);
6796 list_del(&devlink_sb->list);
2406e7e5 6797 mutex_unlock(&devlink->lock);
bf797471
JP		 6798 kfree(devlink_sb);
6799}
6800EXPORT_SYMBOL_GPL(devlink_sb_unregister);
6801
1555d204
AS		 6802/**
6803 * devlink_dpipe_headers_register - register dpipe headers
6804 *
6805 * @devlink: devlink
6806 * @dpipe_headers: dpipe header array
6807 *
6808 * Register the headers supported by hardware.
6809 */
6810int devlink_dpipe_headers_register(struct devlink *devlink,
6811 struct devlink_dpipe_headers *dpipe_headers)
6812{
2406e7e5 6813 mutex_lock(&devlink->lock);
1555d204 6814 devlink->dpipe_headers = dpipe_headers;
2406e7e5 6815 mutex_unlock(&devlink->lock);
1555d204
AS		 6816 return 0;
6817}
6818EXPORT_SYMBOL_GPL(devlink_dpipe_headers_register);
6819
6820/**
6821 * devlink_dpipe_headers_unregister - unregister dpipe headers
6822 *
6823 * @devlink: devlink
6824 *
6825 * Unregister the headers supported by hardware.
6826 */
6827void devlink_dpipe_headers_unregister(struct devlink *devlink)
6828{
2406e7e5 6829 mutex_lock(&devlink->lock);
1555d204 6830 devlink->dpipe_headers = NULL;
2406e7e5 6831 mutex_unlock(&devlink->lock);
1555d204
AS		 6832}
6833EXPORT_SYMBOL_GPL(devlink_dpipe_headers_unregister);
6834
6835/**
6836 * devlink_dpipe_table_counter_enabled - check if counter allocation
6837 * required
6838 * @devlink: devlink
6839 * @table_name: tables name
6840 *
6841 * Used by driver to check if counter allocation is required.
6842 * After counter allocation is turned on the table entries
6843 * are updated to include counter statistics.
6844 *
6845 * After that point on the driver must respect the counter
6846 * state so that each entry added to the table is added
6847 * with a counter.
6848 */
6849bool devlink_dpipe_table_counter_enabled(struct devlink *devlink,
6850 const char *table_name)
6851{
6852 struct devlink_dpipe_table *table;
6853 bool enabled;
6854
6855 rcu_read_lock();
6856 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
6857 table_name);
6858 enabled = false;
6859 if (table)
6860 enabled = table->counters_enabled;
6861 rcu_read_unlock();
6862 return enabled;
6863}
6864EXPORT_SYMBOL_GPL(devlink_dpipe_table_counter_enabled);
6865
6866/**
6867 * devlink_dpipe_table_register - register dpipe table
6868 *
6869 * @devlink: devlink
6870 * @table_name: table name
6871 * @table_ops: table ops
6872 * @priv: priv
1555d204
AS		 6873 * @counter_control_extern: external control for counters
6874 */
6875int devlink_dpipe_table_register(struct devlink *devlink,
6876 const char *table_name,
6877 struct devlink_dpipe_table_ops *table_ops,
ffd3cdcc 6878 void *priv, bool counter_control_extern)
1555d204
AS		 6879{
6880 struct devlink_dpipe_table *table;
6132c1d9 6881 int err = 0;
1555d204 6882
ffd3cdcc
AS		 6883 if (WARN_ON(!table_ops->size_get))
6884 return -EINVAL;
6885
6132c1d9
MB		 6886 mutex_lock(&devlink->lock);
6887
6888 if (devlink_dpipe_table_find(&devlink->dpipe_table_list, table_name)) {
6889 err = -EEXIST;
6890 goto unlock;
6891 }
6892
1555d204 6893 table = kzalloc(sizeof(*table), GFP_KERNEL);
6132c1d9
MB		 6894 if (!table) {
6895 err = -ENOMEM;
6896 goto unlock;
6897 }
1555d204
AS		 6898
6899 table->name = table_name;
6900 table->table_ops = table_ops;
6901 table->priv = priv;
1555d204
AS		 6902 table->counter_control_extern = counter_control_extern;
6903
1555d204 6904 list_add_tail_rcu(&table->list, &devlink->dpipe_table_list);
6132c1d9 6905unlock:
2406e7e5 6906 mutex_unlock(&devlink->lock);
6132c1d9 6907 return err;
1555d204
AS		 6908}
6909EXPORT_SYMBOL_GPL(devlink_dpipe_table_register);
6910
6911/**
6912 * devlink_dpipe_table_unregister - unregister dpipe table
6913 *
6914 * @devlink: devlink
6915 * @table_name: table name
6916 */
6917void devlink_dpipe_table_unregister(struct devlink *devlink,
6918 const char *table_name)
6919{
6920 struct devlink_dpipe_table *table;
6921
2406e7e5 6922 mutex_lock(&devlink->lock);
1555d204
AS		 6923 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
6924 table_name);
6925 if (!table)
6926 goto unlock;
6927 list_del_rcu(&table->list);
2406e7e5 6928 mutex_unlock(&devlink->lock);
1555d204
AS		 6929 kfree_rcu(table, rcu);
6930 return;
6931unlock:
2406e7e5 6932 mutex_unlock(&devlink->lock);
1555d204
AS		 6933}
6934EXPORT_SYMBOL_GPL(devlink_dpipe_table_unregister);
6935
d9f9b9a4
AS		 6936/**
6937 * devlink_resource_register - devlink resource register
6938 *
6939 * @devlink: devlink
6940 * @resource_name: resource's name
d9f9b9a4
AS		 6941 * @resource_size: resource's size
6942 * @resource_id: resource's id
eeaadd82
JK		 6943 * @parent_resource_id: resource's parent id
6944 * @size_params: size parameters
d9f9b9a4
AS		 6945 */
6946int devlink_resource_register(struct devlink *devlink,
6947 const char *resource_name,
d9f9b9a4
AS		 6948 u64 resource_size,
6949 u64 resource_id,
6950 u64 parent_resource_id,
fc56be47 6951 const struct devlink_resource_size_params *size_params)
d9f9b9a4
AS		 6952{
6953 struct devlink_resource *resource;
6954 struct list_head *resource_list;
14530746 6955 bool top_hierarchy;
d9f9b9a4
AS		 6956 int err = 0;
6957
14530746
DA		 6958 top_hierarchy = parent_resource_id == DEVLINK_RESOURCE_ID_PARENT_TOP;
6959
d9f9b9a4
AS		 6960 mutex_lock(&devlink->lock);
6961 resource = devlink_resource_find(devlink, NULL, resource_id);
6962 if (resource) {
6963 err = -EINVAL;
6964 goto out;
6965 }
6966
6967 resource = kzalloc(sizeof(*resource), GFP_KERNEL);
6968 if (!resource) {
6969 err = -ENOMEM;
6970 goto out;
6971 }
6972
6973 if (top_hierarchy) {
6974 resource_list = &devlink->resource_list;
6975 } else {
6976 struct devlink_resource *parent_resource;
6977
6978 parent_resource = devlink_resource_find(devlink, NULL,
6979 parent_resource_id);
6980 if (parent_resource) {
6981 resource_list = &parent_resource->resource_list;
6982 resource->parent = parent_resource;
6983 } else {
b75703de 6984 kfree(resource);
d9f9b9a4
AS		 6985 err = -EINVAL;
6986 goto out;
6987 }
6988 }
6989
6990 resource->name = resource_name;
6991 resource->size = resource_size;
6992 resource->size_new = resource_size;
6993 resource->id = resource_id;
d9f9b9a4 6994 resource->size_valid = true;
77d27096
JP		 6995 memcpy(&resource->size_params, size_params,
6996 sizeof(resource->size_params));
d9f9b9a4
AS		 6997 INIT_LIST_HEAD(&resource->resource_list);
6998 list_add_tail(&resource->list, resource_list);
6999out:
7000 mutex_unlock(&devlink->lock);
7001 return err;
7002}
7003EXPORT_SYMBOL_GPL(devlink_resource_register);
7004
7005/**
7006 * devlink_resources_unregister - free all resources
7007 *
7008 * @devlink: devlink
7009 * @resource: resource
7010 */
7011void devlink_resources_unregister(struct devlink *devlink,
7012 struct devlink_resource *resource)
7013{
7014 struct devlink_resource *tmp, *child_resource;
7015 struct list_head *resource_list;
7016
7017 if (resource)
7018 resource_list = &resource->resource_list;
7019 else
7020 resource_list = &devlink->resource_list;
7021
7022 if (!resource)
7023 mutex_lock(&devlink->lock);
7024
7025 list_for_each_entry_safe(child_resource, tmp, resource_list, list) {
7026 devlink_resources_unregister(devlink, child_resource);
7027 list_del(&child_resource->list);
7028 kfree(child_resource);
7029 }
7030
7031 if (!resource)
7032 mutex_unlock(&devlink->lock);
7033}
7034EXPORT_SYMBOL_GPL(devlink_resources_unregister);
7035
7036/**
7037 * devlink_resource_size_get - get and update size
7038 *
7039 * @devlink: devlink
7040 * @resource_id: the requested resource id
7041 * @p_resource_size: ptr to update
7042 */
7043int devlink_resource_size_get(struct devlink *devlink,
7044 u64 resource_id,
7045 u64 *p_resource_size)
7046{
7047 struct devlink_resource *resource;
7048 int err = 0;
7049
7050 mutex_lock(&devlink->lock);
7051 resource = devlink_resource_find(devlink, NULL, resource_id);
7052 if (!resource) {
7053 err = -EINVAL;
7054 goto out;
7055 }
7056 *p_resource_size = resource->size_new;
7057 resource->size = resource->size_new;
7058out:
7059 mutex_unlock(&devlink->lock);
7060 return err;
7061}
7062EXPORT_SYMBOL_GPL(devlink_resource_size_get);
7063
56dc7cd0
AS		 7064/**
7065 * devlink_dpipe_table_resource_set - set the resource id
7066 *
7067 * @devlink: devlink
7068 * @table_name: table name
7069 * @resource_id: resource id
7070 * @resource_units: number of resource's units consumed per table's entry
7071 */
7072int devlink_dpipe_table_resource_set(struct devlink *devlink,
7073 const char *table_name, u64 resource_id,
7074 u64 resource_units)
7075{
7076 struct devlink_dpipe_table *table;
7077 int err = 0;
7078
7079 mutex_lock(&devlink->lock);
7080 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
7081 table_name);
7082 if (!table) {
7083 err = -EINVAL;
7084 goto out;
7085 }
7086 table->resource_id = resource_id;
7087 table->resource_units = resource_units;
7088 table->resource_valid = true;
7089out:
7090 mutex_unlock(&devlink->lock);
7091 return err;
7092}
7093EXPORT_SYMBOL_GPL(devlink_dpipe_table_resource_set);
7094
fc56be47
JP		 7095/**
7096 * devlink_resource_occ_get_register - register occupancy getter
7097 *
7098 * @devlink: devlink
7099 * @resource_id: resource id
7100 * @occ_get: occupancy getter callback
7101 * @occ_get_priv: occupancy getter callback priv
7102 */
7103void devlink_resource_occ_get_register(struct devlink *devlink,
7104 u64 resource_id,
7105 devlink_resource_occ_get_t *occ_get,
7106 void *occ_get_priv)
7107{
7108 struct devlink_resource *resource;
7109
7110 mutex_lock(&devlink->lock);
7111 resource = devlink_resource_find(devlink, NULL, resource_id);
7112 if (WARN_ON(!resource))
7113 goto out;
7114 WARN_ON(resource->occ_get);
7115
7116 resource->occ_get = occ_get;
7117 resource->occ_get_priv = occ_get_priv;
7118out:
7119 mutex_unlock(&devlink->lock);
7120}
7121EXPORT_SYMBOL_GPL(devlink_resource_occ_get_register);
7122
7123/**
7124 * devlink_resource_occ_get_unregister - unregister occupancy getter
7125 *
7126 * @devlink: devlink
7127 * @resource_id: resource id
7128 */
7129void devlink_resource_occ_get_unregister(struct devlink *devlink,
7130 u64 resource_id)
7131{
7132 struct devlink_resource *resource;
7133
7134 mutex_lock(&devlink->lock);
7135 resource = devlink_resource_find(devlink, NULL, resource_id);
7136 if (WARN_ON(!resource))
7137 goto out;
7138 WARN_ON(!resource->occ_get);
7139
7140 resource->occ_get = NULL;
7141 resource->occ_get_priv = NULL;
7142out:
7143 mutex_unlock(&devlink->lock);
7144}
7145EXPORT_SYMBOL_GPL(devlink_resource_occ_get_unregister);
7146
39e6160e
VV		 7147static int devlink_param_verify(const struct devlink_param *param)
7148{
7149 if (!param || !param->name || !param->supported_cmodes)
7150 return -EINVAL;
7151 if (param->generic)
7152 return devlink_param_generic_verify(param);
7153 else
7154 return devlink_param_driver_verify(param);
7155}
7156
7157static int __devlink_params_register(struct devlink *devlink,
c1e5786d 7158 unsigned int port_index,
39e6160e
VV		 7159 struct list_head *param_list,
7160 const struct devlink_param *params,
c1e5786d
VV		 7161 size_t params_count,
7162 enum devlink_command reg_cmd,
7163 enum devlink_command unreg_cmd)
eabaef18
MS		 7164{
7165 const struct devlink_param *param = params;
7166 int i;
7167 int err;
7168
7169 mutex_lock(&devlink->lock);
7170 for (i = 0; i < params_count; i++, param++) {
39e6160e
VV		 7171 err = devlink_param_verify(param);
7172 if (err)
eabaef18 7173 goto rollback;
39e6160e 7174
c1e5786d
VV		 7175 err = devlink_param_register_one(devlink, port_index,
7176 param_list, param, reg_cmd);
eabaef18
MS		 7177 if (err)
7178 goto rollback;
7179 }
7180
7181 mutex_unlock(&devlink->lock);
7182 return 0;
7183
7184rollback:
7185 if (!i)
7186 goto unlock;
7187 for (param--; i > 0; i--, param--)
c1e5786d
VV		 7188 devlink_param_unregister_one(devlink, port_index, param_list,
7189 param, unreg_cmd);
eabaef18
MS		 7190unlock:
7191 mutex_unlock(&devlink->lock);
7192 return err;
7193}
39e6160e
VV		 7194
7195static void __devlink_params_unregister(struct devlink *devlink,
c1e5786d 7196 unsigned int port_index,
39e6160e
VV		 7197 struct list_head *param_list,
7198 const struct devlink_param *params,
c1e5786d
VV		 7199 size_t params_count,
7200 enum devlink_command cmd)
39e6160e
VV		 7201{
7202 const struct devlink_param *param = params;
7203 int i;
7204
7205 mutex_lock(&devlink->lock);
7206 for (i = 0; i < params_count; i++, param++)
c1e5786d
VV		 7207 devlink_param_unregister_one(devlink, 0, param_list, param,
7208 cmd);
39e6160e
VV		 7209 mutex_unlock(&devlink->lock);
7210}
7211
7212/**
7213 * devlink_params_register - register configuration parameters
7214 *
7215 * @devlink: devlink
7216 * @params: configuration parameters array
7217 * @params_count: number of parameters provided
7218 *
7219 * Register the configuration parameters supported by the driver.
7220 */
7221int devlink_params_register(struct devlink *devlink,
7222 const struct devlink_param *params,
7223 size_t params_count)
7224{
c1e5786d
VV		 7225 return __devlink_params_register(devlink, 0, &devlink->param_list,
7226 params, params_count,
7227 DEVLINK_CMD_PARAM_NEW,
7228 DEVLINK_CMD_PARAM_DEL);
39e6160e 7229}
eabaef18
MS		 7230EXPORT_SYMBOL_GPL(devlink_params_register);
7231
7232/**
7233 * devlink_params_unregister - unregister configuration parameters
7234 * @devlink: devlink
7235 * @params: configuration parameters to unregister
7236 * @params_count: number of parameters provided
7237 */
7238void devlink_params_unregister(struct devlink *devlink,
7239 const struct devlink_param *params,
7240 size_t params_count)
7241{
c1e5786d
VV		 7242 return __devlink_params_unregister(devlink, 0, &devlink->param_list,
7243 params, params_count,
7244 DEVLINK_CMD_PARAM_DEL);
eabaef18
MS		 7245}
7246EXPORT_SYMBOL_GPL(devlink_params_unregister);
7247
7c62cfb8
JP		 7248/**
7249 * devlink_params_publish - publish configuration parameters
7250 *
7251 * @devlink: devlink
7252 *
7253 * Publish previously registered configuration parameters.
7254 */
7255void devlink_params_publish(struct devlink *devlink)
7256{
7257 struct devlink_param_item *param_item;
7258
7259 list_for_each_entry(param_item, &devlink->param_list, list) {
7260 if (param_item->published)
7261 continue;
7262 param_item->published = true;
7263 devlink_param_notify(devlink, 0, param_item,
7264 DEVLINK_CMD_PARAM_NEW);
7265 }
7266}
7267EXPORT_SYMBOL_GPL(devlink_params_publish);
7268
7269/**
7270 * devlink_params_unpublish - unpublish configuration parameters
7271 *
7272 * @devlink: devlink
7273 *
7274 * Unpublish previously registered configuration parameters.
7275 */
7276void devlink_params_unpublish(struct devlink *devlink)
7277{
7278 struct devlink_param_item *param_item;
7279
7280 list_for_each_entry(param_item, &devlink->param_list, list) {
7281 if (!param_item->published)
7282 continue;
7283 param_item->published = false;
7284 devlink_param_notify(devlink, 0, param_item,
7285 DEVLINK_CMD_PARAM_DEL);
7286 }
7287}
7288EXPORT_SYMBOL_GPL(devlink_params_unpublish);
7289
39e6160e
VV		 7290/**
7291 * devlink_port_params_register - register port configuration parameters
7292 *
7293 * @devlink_port: devlink port
7294 * @params: configuration parameters array
7295 * @params_count: number of parameters provided
7296 *
7297 * Register the configuration parameters supported by the port.
7298 */
7299int devlink_port_params_register(struct devlink_port *devlink_port,
7300 const struct devlink_param *params,
7301 size_t params_count)
7302{
7303 return __devlink_params_register(devlink_port->devlink,
c1e5786d 7304 devlink_port->index,
39e6160e 7305 &devlink_port->param_list, params,
c1e5786d
VV		 7306 params_count,
7307 DEVLINK_CMD_PORT_PARAM_NEW,
7308 DEVLINK_CMD_PORT_PARAM_DEL);
39e6160e
VV		 7309}
7310EXPORT_SYMBOL_GPL(devlink_port_params_register);
7311
7312/**
7313 * devlink_port_params_unregister - unregister port configuration
7314 * parameters
7315 *
7316 * @devlink_port: devlink port
7317 * @params: configuration parameters array
7318 * @params_count: number of parameters provided
7319 */
7320void devlink_port_params_unregister(struct devlink_port *devlink_port,
7321 const struct devlink_param *params,
7322 size_t params_count)
7323{
7324 return __devlink_params_unregister(devlink_port->devlink,
c1e5786d 7325 devlink_port->index,
39e6160e 7326 &devlink_port->param_list,
c1e5786d
VV		 7327 params, params_count,
7328 DEVLINK_CMD_PORT_PARAM_DEL);
39e6160e
VV		 7329}
7330EXPORT_SYMBOL_GPL(devlink_port_params_unregister);
7331
ffd19b9a
VV		 7332static int
7333__devlink_param_driverinit_value_get(struct list_head *param_list, u32 param_id,
7334 union devlink_param_value *init_val)
ec01aeb1
MS		 7335{
7336 struct devlink_param_item *param_item;
7337
ffd19b9a 7338 param_item = devlink_param_find_by_id(param_list, param_id);
ec01aeb1
MS		 7339 if (!param_item)
7340 return -EINVAL;
7341
7342 if (!param_item->driverinit_value_valid ||
7343 !devlink_param_cmode_is_supported(param_item->param,
7344 DEVLINK_PARAM_CMODE_DRIVERINIT))
7345 return -EOPNOTSUPP;
7346
1276534c
MS		 7347 if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
7348 strcpy(init_val->vstr, param_item->driverinit_value.vstr);
7349 else
7350 *init_val = param_item->driverinit_value;
ec01aeb1
MS		 7351
7352 return 0;
7353}
ffd19b9a 7354
5473a7bd
VV		 7355static int
7356__devlink_param_driverinit_value_set(struct devlink *devlink,
c1e5786d 7357 unsigned int port_index,
5473a7bd
VV		 7358 struct list_head *param_list, u32 param_id,
7359 union devlink_param_value init_val,
7360 enum devlink_command cmd)
7361{
7362 struct devlink_param_item *param_item;
7363
7364 param_item = devlink_param_find_by_id(param_list, param_id);
7365 if (!param_item)
7366 return -EINVAL;
7367
7368 if (!devlink_param_cmode_is_supported(param_item->param,
7369 DEVLINK_PARAM_CMODE_DRIVERINIT))
7370 return -EOPNOTSUPP;
7371
7372 if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
7373 strcpy(param_item->driverinit_value.vstr, init_val.vstr);
7374 else
7375 param_item->driverinit_value = init_val;
7376 param_item->driverinit_value_valid = true;
7377
c1e5786d 7378 devlink_param_notify(devlink, port_index, param_item, cmd);
5473a7bd
VV		 7379 return 0;
7380}
7381
ffd19b9a
VV		 7382/**
7383 * devlink_param_driverinit_value_get - get configuration parameter
7384 * value for driver initializing
7385 *
7386 * @devlink: devlink
7387 * @param_id: parameter ID
7388 * @init_val: value of parameter in driverinit configuration mode
7389 *
7390 * This function should be used by the driver to get driverinit
7391 * configuration for initialization after reload command.
7392 */
7393int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
7394 union devlink_param_value *init_val)
7395{
97691069 7396 if (!devlink_reload_supported(devlink))
ffd19b9a
VV		 7397 return -EOPNOTSUPP;
7398
7399 return __devlink_param_driverinit_value_get(&devlink->param_list,
7400 param_id, init_val);
7401}
ec01aeb1
MS		 7402EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_get);
7403
7404/**
7405 * devlink_param_driverinit_value_set - set value of configuration
7406 * parameter for driverinit
7407 * configuration mode
7408 *
7409 * @devlink: devlink
7410 * @param_id: parameter ID
7411 * @init_val: value of parameter to set for driverinit configuration mode
7412 *
7413 * This function should be used by the driver to set driverinit
7414 * configuration mode default value.
7415 */
7416int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
7417 union devlink_param_value init_val)
7418{
c1e5786d 7419 return __devlink_param_driverinit_value_set(devlink, 0,
5473a7bd
VV		 7420 &devlink->param_list,
7421 param_id, init_val,
7422 DEVLINK_CMD_PARAM_NEW);
ec01aeb1
MS		 7423}
7424EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_set);
7425
ffd19b9a
VV		 7426/**
7427 * devlink_port_param_driverinit_value_get - get configuration parameter
7428 * value for driver initializing
7429 *
7430 * @devlink_port: devlink_port
7431 * @param_id: parameter ID
7432 * @init_val: value of parameter in driverinit configuration mode
7433 *
7434 * This function should be used by the driver to get driverinit
7435 * configuration for initialization after reload command.
7436 */
7437int devlink_port_param_driverinit_value_get(struct devlink_port *devlink_port,
7438 u32 param_id,
7439 union devlink_param_value *init_val)
7440{
7441 struct devlink *devlink = devlink_port->devlink;
7442
97691069 7443 if (!devlink_reload_supported(devlink))
ffd19b9a
VV		 7444 return -EOPNOTSUPP;
7445
7446 return __devlink_param_driverinit_value_get(&devlink_port->param_list,
7447 param_id, init_val);
7448}
7449EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_get);
7450
5473a7bd
VV		 7451/**
7452 * devlink_port_param_driverinit_value_set - set value of configuration
7453 * parameter for driverinit
7454 * configuration mode
7455 *
7456 * @devlink_port: devlink_port
7457 * @param_id: parameter ID
7458 * @init_val: value of parameter to set for driverinit configuration mode
7459 *
7460 * This function should be used by the driver to set driverinit
7461 * configuration mode default value.
7462 */
7463int devlink_port_param_driverinit_value_set(struct devlink_port *devlink_port,
7464 u32 param_id,
7465 union devlink_param_value init_val)
7466{
7467 return __devlink_param_driverinit_value_set(devlink_port->devlink,
c1e5786d 7468 devlink_port->index,
5473a7bd 7469 &devlink_port->param_list,
c1e5786d
VV		 7470 param_id, init_val,
7471 DEVLINK_CMD_PORT_PARAM_NEW);
5473a7bd
VV		 7472}
7473EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_set);
7474
ea601e17
MS		 7475/**
7476 * devlink_param_value_changed - notify devlink on a parameter's value
7477 * change. Should be called by the driver
7478 * right after the change.
7479 *
7480 * @devlink: devlink
7481 * @param_id: parameter ID
7482 *
7483 * This function should be used by the driver to notify devlink on value
7484 * change, excluding driverinit configuration mode.
7485 * For driverinit configuration mode driver should use the function
ea601e17
MS		 7486 */
7487void devlink_param_value_changed(struct devlink *devlink, u32 param_id)
7488{
7489 struct devlink_param_item *param_item;
7490
7491 param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
7492 WARN_ON(!param_item);
7493
c1e5786d 7494 devlink_param_notify(devlink, 0, param_item, DEVLINK_CMD_PARAM_NEW);
ea601e17
MS		 7495}
7496EXPORT_SYMBOL_GPL(devlink_param_value_changed);
7497
c1e5786d
VV		 7498/**
7499 * devlink_port_param_value_changed - notify devlink on a parameter's value
7500 * change. Should be called by the driver
7501 * right after the change.
7502 *
7503 * @devlink_port: devlink_port
7504 * @param_id: parameter ID
7505 *
7506 * This function should be used by the driver to notify devlink on value
7507 * change, excluding driverinit configuration mode.
7508 * For driverinit configuration mode driver should use the function
7509 * devlink_port_param_driverinit_value_set() instead.
7510 */
7511void devlink_port_param_value_changed(struct devlink_port *devlink_port,
7512 u32 param_id)
7513{
7514 struct devlink_param_item *param_item;
7515
7516 param_item = devlink_param_find_by_id(&devlink_port->param_list,
7517 param_id);
7518 WARN_ON(!param_item);
7519
7520 devlink_param_notify(devlink_port->devlink, devlink_port->index,
7521 param_item, DEVLINK_CMD_PORT_PARAM_NEW);
7522}
7523EXPORT_SYMBOL_GPL(devlink_port_param_value_changed);
7524
bde74ad1
MS		 7525/**
7526 * devlink_param_value_str_fill - Safely fill-up the string preventing
7527 * from overflow of the preallocated buffer
7528 *
7529 * @dst_val: destination devlink_param_value
7530 * @src: source buffer
7531 */
7532void devlink_param_value_str_fill(union devlink_param_value *dst_val,
7533 const char *src)
7534{
7535 size_t len;
7536
7537 len = strlcpy(dst_val->vstr, src, __DEVLINK_PARAM_MAX_STRING_VALUE);
7538 WARN_ON(len >= __DEVLINK_PARAM_MAX_STRING_VALUE);
7539}
7540EXPORT_SYMBOL_GPL(devlink_param_value_str_fill);
7541
b16ebe92
AV		 7542/**
7543 * devlink_region_create - create a new address region
7544 *
7545 * @devlink: devlink
7546 * @region_name: region name
7547 * @region_max_snapshots: Maximum supported number of snapshots for region
7548 * @region_size: size of region
7549 */
7550struct devlink_region *devlink_region_create(struct devlink *devlink,
7551 const char *region_name,
7552 u32 region_max_snapshots,
7553 u64 region_size)
7554{
7555 struct devlink_region *region;
7556 int err = 0;
7557
7558 mutex_lock(&devlink->lock);
7559
7560 if (devlink_region_get_by_name(devlink, region_name)) {
7561 err = -EEXIST;
7562 goto unlock;
7563 }
7564
7565 region = kzalloc(sizeof(*region), GFP_KERNEL);
7566 if (!region) {
7567 err = -ENOMEM;
7568 goto unlock;
7569 }
7570
7571 region->devlink = devlink;
7572 region->max_snapshots = region_max_snapshots;
7573 region->name = region_name;
7574 region->size = region_size;
7575 INIT_LIST_HEAD(&region->snapshot_list);
7576 list_add_tail(&region->list, &devlink->region_list);
866319bb 7577 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
b16ebe92
AV		 7578
7579 mutex_unlock(&devlink->lock);
7580 return region;
7581
7582unlock:
7583 mutex_unlock(&devlink->lock);
7584 return ERR_PTR(err);
7585}
7586EXPORT_SYMBOL_GPL(devlink_region_create);
7587
7588/**
7589 * devlink_region_destroy - destroy address region
7590 *
7591 * @region: devlink region to destroy
7592 */
7593void devlink_region_destroy(struct devlink_region *region)
7594{
7595 struct devlink *devlink = region->devlink;
d7e52722 7596 struct devlink_snapshot *snapshot, *ts;
b16ebe92
AV		 7597
7598 mutex_lock(&devlink->lock);
d7e52722
AV		 7599
7600 /* Free all snapshots of region */
7601 list_for_each_entry_safe(snapshot, ts, &region->snapshot_list, list)
92b49822 7602 devlink_region_snapshot_del(region, snapshot);
d7e52722 7603
b16ebe92 7604 list_del(&region->list);
866319bb
AV		 7605
7606 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL);
b16ebe92
AV		 7607 mutex_unlock(&devlink->lock);
7608 kfree(region);
7609}
7610EXPORT_SYMBOL_GPL(devlink_region_destroy);
7611
ccadfa44 7612/**
b0efcae5 7613 * devlink_region_snapshot_id_get - get snapshot ID
ccadfa44
AV		 7614 *
7615 * This callback should be called when adding a new snapshot,
7616 * Driver should use the same id for multiple snapshots taken
7617 * on multiple regions at the same time/by the same trigger.
7618 *
7619 * @devlink: devlink
7620 */
b0efcae5 7621u32 devlink_region_snapshot_id_get(struct devlink *devlink)
ccadfa44
AV		 7622{
7623 u32 id;
7624
7625 mutex_lock(&devlink->lock);
7626 id = ++devlink->snapshot_id;
7627 mutex_unlock(&devlink->lock);
7628
7629 return id;
7630}
b0efcae5 7631EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_get);
ccadfa44 7632
d7e52722
AV		 7633/**
7634 * devlink_region_snapshot_create - create a new snapshot
7635 * This will add a new snapshot of a region. The snapshot
7636 * will be stored on the region struct and can be accessed
7637 * from devlink. This is useful for future analyses of snapshots.
7638 * Multiple snapshots can be created on a region.
7639 * The @snapshot_id should be obtained using the getter function.
7640 *
eeaadd82 7641 * @region: devlink region of the snapshot
d7e52722
AV		 7642 * @data: snapshot data
7643 * @snapshot_id: snapshot id to be created
7644 * @data_destructor: pointer to destructor function to free data
7645 */
3a5e5234 7646int devlink_region_snapshot_create(struct devlink_region *region,
d7e52722
AV		 7647 u8 *data, u32 snapshot_id,
7648 devlink_snapshot_data_dest_t *data_destructor)
7649{
7650 struct devlink *devlink = region->devlink;
7651 struct devlink_snapshot *snapshot;
7652 int err;
7653
7654 mutex_lock(&devlink->lock);
7655
7656 /* check if region can hold one more snapshot */
7657 if (region->cur_snapshots == region->max_snapshots) {
7658 err = -ENOMEM;
7659 goto unlock;
7660 }
7661
7662 if (devlink_region_snapshot_get_by_id(region, snapshot_id)) {
7663 err = -EEXIST;
7664 goto unlock;
7665 }
7666
7667 snapshot = kzalloc(sizeof(*snapshot), GFP_KERNEL);
7668 if (!snapshot) {
7669 err = -ENOMEM;
7670 goto unlock;
7671 }
7672
7673 snapshot->id = snapshot_id;
7674 snapshot->region = region;
7675 snapshot->data = data;
d7e52722
AV		 7676 snapshot->data_destructor = data_destructor;
7677
7678 list_add_tail(&snapshot->list, &region->snapshot_list);
7679
7680 region->cur_snapshots++;
7681
866319bb 7682 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_NEW);
d7e52722
AV		 7683 mutex_unlock(&devlink->lock);
7684 return 0;
7685
7686unlock:
7687 mutex_unlock(&devlink->lock);
7688 return err;
7689}
7690EXPORT_SYMBOL_GPL(devlink_region_snapshot_create);
7691
0f420b6c
IS		 7692#define DEVLINK_TRAP(_id, _type) \
7693 { \
7694 .type = DEVLINK_TRAP_TYPE_##_type, \
7695 .id = DEVLINK_TRAP_GENERIC_ID_##_id, \
7696 .name = DEVLINK_TRAP_GENERIC_NAME_##_id, \
7697 }
7698
7699static const struct devlink_trap devlink_trap_generic[] = {
391203ab
IS		 7700 DEVLINK_TRAP(SMAC_MC, DROP),
7701 DEVLINK_TRAP(VLAN_TAG_MISMATCH, DROP),
7702 DEVLINK_TRAP(INGRESS_VLAN_FILTER, DROP),
7703 DEVLINK_TRAP(INGRESS_STP_FILTER, DROP),
7704 DEVLINK_TRAP(EMPTY_TX_LIST, DROP),
7705 DEVLINK_TRAP(PORT_LOOPBACK_FILTER, DROP),
7706 DEVLINK_TRAP(BLACKHOLE_ROUTE, DROP),
7707 DEVLINK_TRAP(TTL_ERROR, EXCEPTION),
7708 DEVLINK_TRAP(TAIL_DROP, DROP),
6896cc4d
AC		 7709 DEVLINK_TRAP(NON_IP_PACKET, DROP),
7710 DEVLINK_TRAP(UC_DIP_MC_DMAC, DROP),
7711 DEVLINK_TRAP(DIP_LB, DROP),
7712 DEVLINK_TRAP(SIP_MC, DROP),
7713 DEVLINK_TRAP(SIP_LB, DROP),
7714 DEVLINK_TRAP(CORRUPTED_IP_HDR, DROP),
7715 DEVLINK_TRAP(IPV4_SIP_BC, DROP),
7716 DEVLINK_TRAP(IPV6_MC_DIP_RESERVED_SCOPE, DROP),
7717 DEVLINK_TRAP(IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE, DROP),
3b063ae5
AC		 7718 DEVLINK_TRAP(MTU_ERROR, EXCEPTION),
7719 DEVLINK_TRAP(UNRESOLVED_NEIGH, EXCEPTION),
7720 DEVLINK_TRAP(RPF, EXCEPTION),
7721 DEVLINK_TRAP(REJECT_ROUTE, EXCEPTION),
7722 DEVLINK_TRAP(IPV4_LPM_UNICAST_MISS, EXCEPTION),
7723 DEVLINK_TRAP(IPV6_LPM_UNICAST_MISS, EXCEPTION),
95f0ead8 7724 DEVLINK_TRAP(NON_ROUTABLE, DROP),
13c056ec 7725 DEVLINK_TRAP(DECAP_ERROR, EXCEPTION),
c3cae491 7726 DEVLINK_TRAP(OVERLAY_SMAC_MC, DROP),
0f420b6c
IS		 7727};
7728
7729#define DEVLINK_TRAP_GROUP(_id) \
7730 { \
7731 .id = DEVLINK_TRAP_GROUP_GENERIC_ID_##_id, \
7732 .name = DEVLINK_TRAP_GROUP_GENERIC_NAME_##_id, \
7733 }
7734
7735static const struct devlink_trap_group devlink_trap_group_generic[] = {
391203ab
IS		 7736 DEVLINK_TRAP_GROUP(L2_DROPS),
7737 DEVLINK_TRAP_GROUP(L3_DROPS),
7738 DEVLINK_TRAP_GROUP(BUFFER_DROPS),
13c056ec 7739 DEVLINK_TRAP_GROUP(TUNNEL_DROPS),
0f420b6c
IS		 7740};
7741
7742static int devlink_trap_generic_verify(const struct devlink_trap *trap)
7743{
7744 if (trap->id > DEVLINK_TRAP_GENERIC_ID_MAX)
7745 return -EINVAL;
7746
7747 if (strcmp(trap->name, devlink_trap_generic[trap->id].name))
7748 return -EINVAL;
7749
7750 if (trap->type != devlink_trap_generic[trap->id].type)
7751 return -EINVAL;
7752
7753 return 0;
7754}
7755
7756static int devlink_trap_driver_verify(const struct devlink_trap *trap)
7757{
7758 int i;
7759
7760 if (trap->id <= DEVLINK_TRAP_GENERIC_ID_MAX)
7761 return -EINVAL;
7762
7763 for (i = 0; i < ARRAY_SIZE(devlink_trap_generic); i++) {
7764 if (!strcmp(trap->name, devlink_trap_generic[i].name))
7765 return -EEXIST;
7766 }
7767
7768 return 0;
7769}
7770
7771static int devlink_trap_verify(const struct devlink_trap *trap)
7772{
7773 if (!trap || !trap->name || !trap->group.name)
7774 return -EINVAL;
7775
7776 if (trap->generic)
7777 return devlink_trap_generic_verify(trap);
7778 else
7779 return devlink_trap_driver_verify(trap);
7780}
7781
7782static int
7783devlink_trap_group_generic_verify(const struct devlink_trap_group *group)
7784{
7785 if (group->id > DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
7786 return -EINVAL;
7787
7788 if (strcmp(group->name, devlink_trap_group_generic[group->id].name))
7789 return -EINVAL;
7790
7791 return 0;
7792}
7793
7794static int
7795devlink_trap_group_driver_verify(const struct devlink_trap_group *group)
7796{
7797 int i;
7798
7799 if (group->id <= DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
7800 return -EINVAL;
7801
7802 for (i = 0; i < ARRAY_SIZE(devlink_trap_group_generic); i++) {
7803 if (!strcmp(group->name, devlink_trap_group_generic[i].name))
7804 return -EEXIST;
7805 }
7806
7807 return 0;
7808}
7809
7810static int devlink_trap_group_verify(const struct devlink_trap_group *group)
7811{
7812 if (group->generic)
7813 return devlink_trap_group_generic_verify(group);
7814 else
7815 return devlink_trap_group_driver_verify(group);
7816}
7817
7818static void
7819devlink_trap_group_notify(struct devlink *devlink,
7820 const struct devlink_trap_group_item *group_item,
7821 enum devlink_command cmd)
7822{
7823 struct sk_buff *msg;
7824 int err;
7825
7826 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_GROUP_NEW &&
7827 cmd != DEVLINK_CMD_TRAP_GROUP_DEL);
7828
7829 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7830 if (!msg)
7831 return;
7832
7833 err = devlink_nl_trap_group_fill(msg, devlink, group_item, cmd, 0, 0,
7834 0);
7835 if (err) {
7836 nlmsg_free(msg);
7837 return;
7838 }
7839
7840 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
7841 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
7842}
7843
7844static struct devlink_trap_group_item *
7845devlink_trap_group_item_create(struct devlink *devlink,
7846 const struct devlink_trap_group *group)
7847{
7848 struct devlink_trap_group_item *group_item;
7849 int err;
7850
7851 err = devlink_trap_group_verify(group);
7852 if (err)
7853 return ERR_PTR(err);
7854
7855 group_item = kzalloc(sizeof(*group_item), GFP_KERNEL);
7856 if (!group_item)
7857 return ERR_PTR(-ENOMEM);
7858
7859 group_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
7860 if (!group_item->stats) {
7861 err = -ENOMEM;
7862 goto err_stats_alloc;
7863 }
7864
7865 group_item->group = group;
7866 refcount_set(&group_item->refcount, 1);
7867
7868 if (devlink->ops->trap_group_init) {
7869 err = devlink->ops->trap_group_init(devlink, group);
7870 if (err)
7871 goto err_group_init;
7872 }
7873
7874 list_add_tail(&group_item->list, &devlink->trap_group_list);
7875 devlink_trap_group_notify(devlink, group_item,
7876 DEVLINK_CMD_TRAP_GROUP_NEW);
7877
7878 return group_item;
7879
7880err_group_init:
7881 free_percpu(group_item->stats);
7882err_stats_alloc:
7883 kfree(group_item);
7884 return ERR_PTR(err);
7885}
7886
7887static void
7888devlink_trap_group_item_destroy(struct devlink *devlink,
7889 struct devlink_trap_group_item *group_item)
7890{
7891 devlink_trap_group_notify(devlink, group_item,
7892 DEVLINK_CMD_TRAP_GROUP_DEL);
7893 list_del(&group_item->list);
7894 free_percpu(group_item->stats);
7895 kfree(group_item);
7896}
7897
7898static struct devlink_trap_group_item *
7899devlink_trap_group_item_get(struct devlink *devlink,
7900 const struct devlink_trap_group *group)
7901{
7902 struct devlink_trap_group_item *group_item;
7903
7904 group_item = devlink_trap_group_item_lookup(devlink, group->name);
7905 if (group_item) {
7906 refcount_inc(&group_item->refcount);
7907 return group_item;
7908 }
7909
7910 return devlink_trap_group_item_create(devlink, group);
7911}
7912
7913static void
7914devlink_trap_group_item_put(struct devlink *devlink,
7915 struct devlink_trap_group_item *group_item)
7916{
7917 if (!refcount_dec_and_test(&group_item->refcount))
7918 return;
7919
7920 devlink_trap_group_item_destroy(devlink, group_item);
7921}
7922
7923static int
7924devlink_trap_item_group_link(struct devlink *devlink,
7925 struct devlink_trap_item *trap_item)
7926{
7927 struct devlink_trap_group_item *group_item;
7928
7929 group_item = devlink_trap_group_item_get(devlink,
7930 &trap_item->trap->group);
7931 if (IS_ERR(group_item))
7932 return PTR_ERR(group_item);
7933
7934 trap_item->group_item = group_item;
7935
7936 return 0;
7937}
7938
7939static void
7940devlink_trap_item_group_unlink(struct devlink *devlink,
7941 struct devlink_trap_item *trap_item)
7942{
7943 devlink_trap_group_item_put(devlink, trap_item->group_item);
7944}
7945
7946static void devlink_trap_notify(struct devlink *devlink,
7947 const struct devlink_trap_item *trap_item,
7948 enum devlink_command cmd)
7949{
7950 struct sk_buff *msg;
7951 int err;
7952
7953 WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_NEW &&
7954 cmd != DEVLINK_CMD_TRAP_DEL);
7955
7956 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7957 if (!msg)
7958 return;
7959
7960 err = devlink_nl_trap_fill(msg, devlink, trap_item, cmd, 0, 0, 0);
7961 if (err) {
7962 nlmsg_free(msg);
7963 return;
7964 }
7965
7966 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
7967 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
7968}
7969
7970static int
7971devlink_trap_register(struct devlink *devlink,
7972 const struct devlink_trap *trap, void *priv)
7973{
7974 struct devlink_trap_item *trap_item;
7975 int err;
7976
7977 if (devlink_trap_item_lookup(devlink, trap->name))
7978 return -EEXIST;
7979
7980 trap_item = kzalloc(sizeof(*trap_item), GFP_KERNEL);
7981 if (!trap_item)
7982 return -ENOMEM;
7983
7984 trap_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
7985 if (!trap_item->stats) {
7986 err = -ENOMEM;
7987 goto err_stats_alloc;
7988 }
7989
7990 trap_item->trap = trap;
7991 trap_item->action = trap->init_action;
7992 trap_item->priv = priv;
7993
7994 err = devlink_trap_item_group_link(devlink, trap_item);
7995 if (err)
7996 goto err_group_link;
7997
7998 err = devlink->ops->trap_init(devlink, trap, trap_item);
7999 if (err)
8000 goto err_trap_init;
8001
8002 list_add_tail(&trap_item->list, &devlink->trap_list);
8003 devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_NEW);
8004
8005 return 0;
8006
8007err_trap_init:
8008 devlink_trap_item_group_unlink(devlink, trap_item);
8009err_group_link:
8010 free_percpu(trap_item->stats);
8011err_stats_alloc:
8012 kfree(trap_item);
8013 return err;
8014}
8015
8016static void devlink_trap_unregister(struct devlink *devlink,
8017 const struct devlink_trap *trap)
8018{
8019 struct devlink_trap_item *trap_item;
8020
8021 trap_item = devlink_trap_item_lookup(devlink, trap->name);
8022 if (WARN_ON_ONCE(!trap_item))
8023 return;
8024
8025 devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_DEL);
8026 list_del(&trap_item->list);
8027 if (devlink->ops->trap_fini)
8028 devlink->ops->trap_fini(devlink, trap, trap_item);
8029 devlink_trap_item_group_unlink(devlink, trap_item);
8030 free_percpu(trap_item->stats);
8031 kfree(trap_item);
8032}
8033
8034static void devlink_trap_disable(struct devlink *devlink,
8035 const struct devlink_trap *trap)
8036{
8037 struct devlink_trap_item *trap_item;
8038
8039 trap_item = devlink_trap_item_lookup(devlink, trap->name);
8040 if (WARN_ON_ONCE(!trap_item))
8041 return;
8042
8043 devlink->ops->trap_action_set(devlink, trap, DEVLINK_TRAP_ACTION_DROP);
8044 trap_item->action = DEVLINK_TRAP_ACTION_DROP;
8045}
8046
8047/**
8048 * devlink_traps_register - Register packet traps with devlink.
8049 * @devlink: devlink.
8050 * @traps: Packet traps.
8051 * @traps_count: Count of provided packet traps.
8052 * @priv: Driver private information.
8053 *
8054 * Return: Non-zero value on failure.
8055 */
8056int devlink_traps_register(struct devlink *devlink,
8057 const struct devlink_trap *traps,
8058 size_t traps_count, void *priv)
8059{
8060 int i, err;
8061
8062 if (!devlink->ops->trap_init || !devlink->ops->trap_action_set)
8063 return -EINVAL;
8064
8065 mutex_lock(&devlink->lock);
8066 for (i = 0; i < traps_count; i++) {
8067 const struct devlink_trap *trap = &traps[i];
8068
8069 err = devlink_trap_verify(trap);
8070 if (err)
8071 goto err_trap_verify;
8072
8073 err = devlink_trap_register(devlink, trap, priv);
8074 if (err)
8075 goto err_trap_register;
8076 }
8077 mutex_unlock(&devlink->lock);
8078
8079 return 0;
8080
8081err_trap_register:
8082err_trap_verify:
8083 for (i--; i >= 0; i--)
8084 devlink_trap_unregister(devlink, &traps[i]);
8085 mutex_unlock(&devlink->lock);
8086 return err;
8087}
8088EXPORT_SYMBOL_GPL(devlink_traps_register);
8089
8090/**
8091 * devlink_traps_unregister - Unregister packet traps from devlink.
8092 * @devlink: devlink.
8093 * @traps: Packet traps.
8094 * @traps_count: Count of provided packet traps.
8095 */
8096void devlink_traps_unregister(struct devlink *devlink,
8097 const struct devlink_trap *traps,
8098 size_t traps_count)
8099{
8100 int i;
8101
8102 mutex_lock(&devlink->lock);
8103 /* Make sure we do not have any packets in-flight while unregistering
8104 * traps by disabling all of them and waiting for a grace period.
8105 */
8106 for (i = traps_count - 1; i >= 0; i--)
8107 devlink_trap_disable(devlink, &traps[i]);
8108 synchronize_rcu();
8109 for (i = traps_count - 1; i >= 0; i--)
8110 devlink_trap_unregister(devlink, &traps[i]);
8111 mutex_unlock(&devlink->lock);
8112}
8113EXPORT_SYMBOL_GPL(devlink_traps_unregister);
8114
8115static void
8116devlink_trap_stats_update(struct devlink_stats __percpu *trap_stats,
8117 size_t skb_len)
8118{
8119 struct devlink_stats *stats;
8120
8121 stats = this_cpu_ptr(trap_stats);
8122 u64_stats_update_begin(&stats->syncp);
8123 stats->rx_bytes += skb_len;
8124 stats->rx_packets++;
8125 u64_stats_update_end(&stats->syncp);
8126}
8127
8128static void
8129devlink_trap_report_metadata_fill(struct net_dm_hw_metadata *hw_metadata,
8130 const struct devlink_trap_item *trap_item,
8131 struct devlink_port *in_devlink_port)
8132{
8133 struct devlink_trap_group_item *group_item = trap_item->group_item;
8134
8135 hw_metadata->trap_group_name = group_item->group->name;
8136 hw_metadata->trap_name = trap_item->trap->name;
8137
8138 spin_lock(&in_devlink_port->type_lock);
8139 if (in_devlink_port->type == DEVLINK_PORT_TYPE_ETH)
8140 hw_metadata->input_dev = in_devlink_port->type_dev;
8141 spin_unlock(&in_devlink_port->type_lock);
8142}
8143
8144/**
8145 * devlink_trap_report - Report trapped packet to drop monitor.
8146 * @devlink: devlink.
8147 * @skb: Trapped packet.
8148 * @trap_ctx: Trap context.
8149 * @in_devlink_port: Input devlink port.
8150 */
8151void devlink_trap_report(struct devlink *devlink, struct sk_buff *skb,
8152 void *trap_ctx, struct devlink_port *in_devlink_port)
8153{
8154 struct devlink_trap_item *trap_item = trap_ctx;
8155 struct net_dm_hw_metadata hw_metadata = {};
8156
8157 devlink_trap_stats_update(trap_item->stats, skb->len);
8158 devlink_trap_stats_update(trap_item->group_item->stats, skb->len);
8159
8160 devlink_trap_report_metadata_fill(&hw_metadata, trap_item,
8161 in_devlink_port);
8162 net_dm_hw_report(skb, &hw_metadata);
8163}
8164EXPORT_SYMBOL_GPL(devlink_trap_report);
8165
8166/**
8167 * devlink_trap_ctx_priv - Trap context to driver private information.
8168 * @trap_ctx: Trap context.
8169 *
8170 * Return: Driver private information passed during registration.
8171 */
8172void *devlink_trap_ctx_priv(void *trap_ctx)
8173{
8174 struct devlink_trap_item *trap_item = trap_ctx;
8175
8176 return trap_item->priv;
8177}
8178EXPORT_SYMBOL_GPL(devlink_trap_ctx_priv);
8179
ddb6e99e
JK		 8180static void __devlink_compat_running_version(struct devlink *devlink,
8181 char *buf, size_t len)
8182{
8183 const struct nlattr *nlattr;
8184 struct devlink_info_req req;
8185 struct sk_buff *msg;
8186 int rem, err;
8187
ddb6e99e
JK		 8188 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8189 if (!msg)
8190 return;
8191
8192 req.msg = msg;
8193 err = devlink->ops->info_get(devlink, &req, NULL);
8194 if (err)
8195 goto free_msg;
8196
8197 nla_for_each_attr(nlattr, (void *)msg->data, msg->len, rem) {
8198 const struct nlattr *kv;
8199 int rem_kv;
8200
8201 if (nla_type(nlattr) != DEVLINK_ATTR_INFO_VERSION_RUNNING)
8202 continue;
8203
8204 nla_for_each_nested(kv, nlattr, rem_kv) {
8205 if (nla_type(kv) != DEVLINK_ATTR_INFO_VERSION_VALUE)
8206 continue;
8207
8208 strlcat(buf, nla_data(kv), len);
8209 strlcat(buf, " ", len);
8210 }
8211 }
8212free_msg:
8213 nlmsg_free(msg);
8214}
8215
8216void devlink_compat_running_version(struct net_device *dev,
8217 char *buf, size_t len)
8218{
ddb6e99e
JK		 8219 struct devlink *devlink;
8220
1b45ff6c
JK		 8221 dev_hold(dev);
8222 rtnl_unlock();
8223
b473b0d2 8224 devlink = netdev_to_devlink(dev);
be6fe1d8 8225 if (!devlink || !devlink->ops->info_get)
e0dcd386 8226 goto out;
b473b0d2
JK		 8227
8228 mutex_lock(&devlink->lock);
8229 __devlink_compat_running_version(devlink, buf, len);
8230 mutex_unlock(&devlink->lock);
1b45ff6c 8231
e0dcd386 8232out:
1b45ff6c
JK		 8233 rtnl_lock();
8234 dev_put(dev);
ddb6e99e
JK		 8235}
8236
4eceba17
JK		 8237int devlink_compat_flash_update(struct net_device *dev, const char *file_name)
8238{
4eceba17 8239 struct devlink *devlink;
e0dcd386 8240 int ret;
4eceba17 8241
1b45ff6c
JK		 8242 dev_hold(dev);
8243 rtnl_unlock();
8244
b473b0d2 8245 devlink = netdev_to_devlink(dev);
e0dcd386
JP		 8246 if (!devlink || !devlink->ops->flash_update) {
8247 ret = -EOPNOTSUPP;
8248 goto out;
8249 }
4eceba17 8250
b473b0d2
JK		 8251 mutex_lock(&devlink->lock);
8252 ret = devlink->ops->flash_update(devlink, file_name, NULL, NULL);
8253 mutex_unlock(&devlink->lock);
1b45ff6c 8254
e0dcd386 8255out:
1b45ff6c
JK		 8256 rtnl_lock();
8257 dev_put(dev);
8258
b473b0d2 8259 return ret;
4eceba17
JK		 8260}
8261
af3836df
JP		 8262int devlink_compat_phys_port_name_get(struct net_device *dev,
8263 char *name, size_t len)
8264{
8265 struct devlink_port *devlink_port;
8266
8267 /* RTNL mutex is held here which ensures that devlink_port
8268 * instance cannot disappear in the middle. No need to take
8269 * any devlink lock as only permanent values are accessed.
8270 */
8271 ASSERT_RTNL();
8272
8273 devlink_port = netdev_to_devlink_port(dev);
8274 if (!devlink_port)
8275 return -EOPNOTSUPP;
8276
8277 return __devlink_port_phys_port_name_get(devlink_port, name, len);
8278}
8279
7e1146e8
JP		 8280int devlink_compat_switch_id_get(struct net_device *dev,
8281 struct netdev_phys_item_id *ppid)
8282{
8283 struct devlink_port *devlink_port;
8284
043b8413
VB		 8285 /* Caller must hold RTNL mutex or reference to dev, which ensures that
8286 * devlink_port instance cannot disappear in the middle. No need to take
7e1146e8
JP		 8287 * any devlink lock as only permanent values are accessed.
8288 */
7e1146e8
JP		 8289 devlink_port = netdev_to_devlink_port(dev);
8290 if (!devlink_port || !devlink_port->attrs.switch_port)
8291 return -EOPNOTSUPP;
8292
8293 memcpy(ppid, &devlink_port->attrs.switch_id, sizeof(*ppid));
8294
8295 return 0;
8296}
8297
070c63f2
JP		 8298static void __net_exit devlink_pernet_pre_exit(struct net *net)
8299{
8300 struct devlink *devlink;
8301 int err;
8302
8303 /* In case network namespace is getting destroyed, reload
8304 * all devlink instances from this namespace into init_net.
8305 */
8306 mutex_lock(&devlink_mutex);
8307 list_for_each_entry(devlink, &devlink_list, list) {
8308 if (net_eq(devlink_net(devlink), net)) {
8309 if (WARN_ON(!devlink_reload_supported(devlink)))
8310 continue;
8311 err = devlink_reload(devlink, &init_net, NULL);
a0c76345 8312 if (err && err != -EOPNOTSUPP)
070c63f2
JP		 8313 pr_warn("Failed to reload devlink instance into init_net\n");
8314 }
8315 }
8316 mutex_unlock(&devlink_mutex);
8317}
8318
8319static struct pernet_operations devlink_pernet_ops __net_initdata = {
8320 .pre_exit = devlink_pernet_pre_exit,
8321};
8322
f4b6bcc7 8323static int __init devlink_init(void)
bfcd3a46 8324{
070c63f2
JP		 8325 int err;
8326
8327 err = genl_register_family(&devlink_nl_family);
8328 if (err)
8329 goto out;
8330 err = register_pernet_subsys(&devlink_pernet_ops);
8331
8332out:
8333 WARN_ON(err);
8334 return err;
bfcd3a46
JP		 8335}
8336
f4b6bcc7 8337subsys_initcall(devlink_init);
Linux 6.x block layer and io_uring tree(s)