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sctp: call iov_iter_revert() after sending ABORT
[linux-block.git] / net / core / devlink.c
CommitLineData
bfcd3a46
JP		 1/*
2 * net/core/devlink.c - Network physical/parent device Netlink interface
3 *
4 * Heavily inspired by net/wireless/
5 * Copyright (c) 2016 Mellanox Technologies. All rights reserved.
6 * Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 */
13
14#include <linux/kernel.h>
15#include <linux/module.h>
16#include <linux/types.h>
17#include <linux/slab.h>
18#include <linux/gfp.h>
19#include <linux/device.h>
20#include <linux/list.h>
21#include <linux/netdevice.h>
22#include <rdma/ib_verbs.h>
23#include <net/netlink.h>
24#include <net/genetlink.h>
25#include <net/rtnetlink.h>
26#include <net/net_namespace.h>
27#include <net/sock.h>
28#include <net/devlink.h>
e5224f0f
JP		 29#define CREATE_TRACE_POINTS
30#include <trace/events/devlink.h>
31
11770091
AS		 32static struct devlink_dpipe_field devlink_dpipe_fields_ethernet[] = {
33 {
12bdc5e1 34 .name = "destination mac",
11770091
AS		 35 .id = DEVLINK_DPIPE_FIELD_ETHERNET_DST_MAC,
36 .bitwidth = 48,
37 },
38};
39
40struct devlink_dpipe_header devlink_dpipe_header_ethernet = {
41 .name = "ethernet",
42 .id = DEVLINK_DPIPE_HEADER_ETHERNET,
43 .fields = devlink_dpipe_fields_ethernet,
44 .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ethernet),
45 .global = true,
46};
47EXPORT_SYMBOL(devlink_dpipe_header_ethernet);
48
3fb886ec
AS		 49static struct devlink_dpipe_field devlink_dpipe_fields_ipv4[] = {
50 {
51 .name = "destination ip",
52 .id = DEVLINK_DPIPE_FIELD_IPV4_DST_IP,
53 .bitwidth = 32,
54 },
55};
56
57struct devlink_dpipe_header devlink_dpipe_header_ipv4 = {
58 .name = "ipv4",
59 .id = DEVLINK_DPIPE_HEADER_IPV4,
60 .fields = devlink_dpipe_fields_ipv4,
61 .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv4),
62 .global = true,
63};
64EXPORT_SYMBOL(devlink_dpipe_header_ipv4);
65
1797f5b3
AS		 66static struct devlink_dpipe_field devlink_dpipe_fields_ipv6[] = {
67 {
68 .name = "destination ip",
69 .id = DEVLINK_DPIPE_FIELD_IPV6_DST_IP,
70 .bitwidth = 128,
71 },
72};
73
74struct devlink_dpipe_header devlink_dpipe_header_ipv6 = {
75 .name = "ipv6",
76 .id = DEVLINK_DPIPE_HEADER_IPV6,
77 .fields = devlink_dpipe_fields_ipv6,
78 .fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv6),
79 .global = true,
80};
81EXPORT_SYMBOL(devlink_dpipe_header_ipv6);
82
e5224f0f 83EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwmsg);
57186a5f 84EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwerr);
bfcd3a46
JP		 85
86static LIST_HEAD(devlink_list);
87
88/* devlink_mutex
89 *
90 * An overall lock guarding every operation coming from userspace.
91 * It also guards devlink devices list and it is taken when
92 * driver registers/unregisters it.
93 */
94static DEFINE_MUTEX(devlink_mutex);
95
bfcd3a46
JP		 96static struct net *devlink_net(const struct devlink *devlink)
97{
98 return read_pnet(&devlink->_net);
99}
100
101static void devlink_net_set(struct devlink *devlink, struct net *net)
102{
103 write_pnet(&devlink->_net, net);
104}
105
106static struct devlink *devlink_get_from_attrs(struct net *net,
107 struct nlattr **attrs)
108{
109 struct devlink *devlink;
110 char *busname;
111 char *devname;
112
113 if (!attrs[DEVLINK_ATTR_BUS_NAME] || !attrs[DEVLINK_ATTR_DEV_NAME])
114 return ERR_PTR(-EINVAL);
115
116 busname = nla_data(attrs[DEVLINK_ATTR_BUS_NAME]);
117 devname = nla_data(attrs[DEVLINK_ATTR_DEV_NAME]);
118
dac7c08f
PP		 119 lockdep_assert_held(&devlink_mutex);
120
bfcd3a46
JP		 121 list_for_each_entry(devlink, &devlink_list, list) {
122 if (strcmp(devlink->dev->bus->name, busname) == 0 &&
123 strcmp(dev_name(devlink->dev), devname) == 0 &&
124 net_eq(devlink_net(devlink), net))
125 return devlink;
126 }
127
128 return ERR_PTR(-ENODEV);
129}
130
131static struct devlink *devlink_get_from_info(struct genl_info *info)
132{
133 return devlink_get_from_attrs(genl_info_net(info), info->attrs);
134}
135
136static struct devlink_port *devlink_port_get_by_index(struct devlink *devlink,
137 int port_index)
138{
139 struct devlink_port *devlink_port;
140
141 list_for_each_entry(devlink_port, &devlink->port_list, list) {
142 if (devlink_port->index == port_index)
143 return devlink_port;
144 }
145 return NULL;
146}
147
148static bool devlink_port_index_exists(struct devlink *devlink, int port_index)
149{
150 return devlink_port_get_by_index(devlink, port_index);
151}
152
153static struct devlink_port *devlink_port_get_from_attrs(struct devlink *devlink,
154 struct nlattr **attrs)
155{
156 if (attrs[DEVLINK_ATTR_PORT_INDEX]) {
157 u32 port_index = nla_get_u32(attrs[DEVLINK_ATTR_PORT_INDEX]);
158 struct devlink_port *devlink_port;
159
160 devlink_port = devlink_port_get_by_index(devlink, port_index);
161 if (!devlink_port)
162 return ERR_PTR(-ENODEV);
163 return devlink_port;
164 }
165 return ERR_PTR(-EINVAL);
166}
167
168static struct devlink_port *devlink_port_get_from_info(struct devlink *devlink,
169 struct genl_info *info)
170{
171 return devlink_port_get_from_attrs(devlink, info->attrs);
172}
173
bf797471
JP		 174struct devlink_sb {
175 struct list_head list;
176 unsigned int index;
177 u32 size;
178 u16 ingress_pools_count;
179 u16 egress_pools_count;
180 u16 ingress_tc_count;
181 u16 egress_tc_count;
182};
183
184static u16 devlink_sb_pool_count(struct devlink_sb *devlink_sb)
185{
186 return devlink_sb->ingress_pools_count + devlink_sb->egress_pools_count;
187}
188
189static struct devlink_sb *devlink_sb_get_by_index(struct devlink *devlink,
190 unsigned int sb_index)
191{
192 struct devlink_sb *devlink_sb;
193
194 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
195 if (devlink_sb->index == sb_index)
196 return devlink_sb;
197 }
198 return NULL;
199}
200
201static bool devlink_sb_index_exists(struct devlink *devlink,
202 unsigned int sb_index)
203{
204 return devlink_sb_get_by_index(devlink, sb_index);
205}
206
207static struct devlink_sb *devlink_sb_get_from_attrs(struct devlink *devlink,
208 struct nlattr **attrs)
209{
210 if (attrs[DEVLINK_ATTR_SB_INDEX]) {
211 u32 sb_index = nla_get_u32(attrs[DEVLINK_ATTR_SB_INDEX]);
212 struct devlink_sb *devlink_sb;
213
214 devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
215 if (!devlink_sb)
216 return ERR_PTR(-ENODEV);
217 return devlink_sb;
218 }
219 return ERR_PTR(-EINVAL);
220}
221
222static struct devlink_sb *devlink_sb_get_from_info(struct devlink *devlink,
223 struct genl_info *info)
224{
225 return devlink_sb_get_from_attrs(devlink, info->attrs);
226}
227
228static int devlink_sb_pool_index_get_from_attrs(struct devlink_sb *devlink_sb,
229 struct nlattr **attrs,
230 u16 *p_pool_index)
231{
232 u16 val;
233
234 if (!attrs[DEVLINK_ATTR_SB_POOL_INDEX])
235 return -EINVAL;
236
237 val = nla_get_u16(attrs[DEVLINK_ATTR_SB_POOL_INDEX]);
238 if (val >= devlink_sb_pool_count(devlink_sb))
239 return -EINVAL;
240 *p_pool_index = val;
241 return 0;
242}
243
244static int devlink_sb_pool_index_get_from_info(struct devlink_sb *devlink_sb,
245 struct genl_info *info,
246 u16 *p_pool_index)
247{
248 return devlink_sb_pool_index_get_from_attrs(devlink_sb, info->attrs,
249 p_pool_index);
250}
251
252static int
253devlink_sb_pool_type_get_from_attrs(struct nlattr **attrs,
254 enum devlink_sb_pool_type *p_pool_type)
255{
256 u8 val;
257
258 if (!attrs[DEVLINK_ATTR_SB_POOL_TYPE])
259 return -EINVAL;
260
261 val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_TYPE]);
262 if (val != DEVLINK_SB_POOL_TYPE_INGRESS &&
263 val != DEVLINK_SB_POOL_TYPE_EGRESS)
264 return -EINVAL;
265 *p_pool_type = val;
266 return 0;
267}
268
269static int
270devlink_sb_pool_type_get_from_info(struct genl_info *info,
271 enum devlink_sb_pool_type *p_pool_type)
272{
273 return devlink_sb_pool_type_get_from_attrs(info->attrs, p_pool_type);
274}
275
276static int
277devlink_sb_th_type_get_from_attrs(struct nlattr **attrs,
278 enum devlink_sb_threshold_type *p_th_type)
279{
280 u8 val;
281
282 if (!attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE])
283 return -EINVAL;
284
285 val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE]);
286 if (val != DEVLINK_SB_THRESHOLD_TYPE_STATIC &&
287 val != DEVLINK_SB_THRESHOLD_TYPE_DYNAMIC)
288 return -EINVAL;
289 *p_th_type = val;
290 return 0;
291}
292
293static int
294devlink_sb_th_type_get_from_info(struct genl_info *info,
295 enum devlink_sb_threshold_type *p_th_type)
296{
297 return devlink_sb_th_type_get_from_attrs(info->attrs, p_th_type);
298}
299
300static int
301devlink_sb_tc_index_get_from_attrs(struct devlink_sb *devlink_sb,
302 struct nlattr **attrs,
303 enum devlink_sb_pool_type pool_type,
304 u16 *p_tc_index)
305{
306 u16 val;
307
308 if (!attrs[DEVLINK_ATTR_SB_TC_INDEX])
309 return -EINVAL;
310
311 val = nla_get_u16(attrs[DEVLINK_ATTR_SB_TC_INDEX]);
312 if (pool_type == DEVLINK_SB_POOL_TYPE_INGRESS &&
313 val >= devlink_sb->ingress_tc_count)
314 return -EINVAL;
315 if (pool_type == DEVLINK_SB_POOL_TYPE_EGRESS &&
316 val >= devlink_sb->egress_tc_count)
317 return -EINVAL;
318 *p_tc_index = val;
319 return 0;
320}
321
322static int
323devlink_sb_tc_index_get_from_info(struct devlink_sb *devlink_sb,
324 struct genl_info *info,
325 enum devlink_sb_pool_type pool_type,
326 u16 *p_tc_index)
327{
328 return devlink_sb_tc_index_get_from_attrs(devlink_sb, info->attrs,
329 pool_type, p_tc_index);
330}
331
b16ebe92
AV		 332struct devlink_region {
333 struct devlink *devlink;
334 struct list_head list;
335 const char *name;
336 struct list_head snapshot_list;
337 u32 max_snapshots;
338 u32 cur_snapshots;
339 u64 size;
340};
341
d7e52722
AV		 342struct devlink_snapshot {
343 struct list_head list;
344 struct devlink_region *region;
345 devlink_snapshot_data_dest_t *data_destructor;
346 u64 data_len;
347 u8 *data;
348 u32 id;
349};
350
b16ebe92
AV		 351static struct devlink_region *
352devlink_region_get_by_name(struct devlink *devlink, const char *region_name)
353{
354 struct devlink_region *region;
355
356 list_for_each_entry(region, &devlink->region_list, list)
357 if (!strcmp(region->name, region_name))
358 return region;
359
360 return NULL;
361}
362
d7e52722
AV		 363static struct devlink_snapshot *
364devlink_region_snapshot_get_by_id(struct devlink_region *region, u32 id)
365{
366 struct devlink_snapshot *snapshot;
367
368 list_for_each_entry(snapshot, &region->snapshot_list, list)
369 if (snapshot->id == id)
370 return snapshot;
371
372 return NULL;
373}
374
375static void devlink_region_snapshot_del(struct devlink_snapshot *snapshot)
376{
377 snapshot->region->cur_snapshots--;
378 list_del(&snapshot->list);
379 (*snapshot->data_destructor)(snapshot->data);
380 kfree(snapshot);
381}
382
1fc2257e
JP		 383#define DEVLINK_NL_FLAG_NEED_DEVLINK BIT(0)
384#define DEVLINK_NL_FLAG_NEED_PORT BIT(1)
bf797471 385#define DEVLINK_NL_FLAG_NEED_SB BIT(2)
2406e7e5
AS		 386
387/* The per devlink instance lock is taken by default in the pre-doit
388 * operation, yet several commands do not require this. The global
389 * devlink lock is taken and protects from disruption by user-calls.
390 */
391#define DEVLINK_NL_FLAG_NO_LOCK BIT(3)
bfcd3a46
JP		 392
393static int devlink_nl_pre_doit(const struct genl_ops *ops,
394 struct sk_buff *skb, struct genl_info *info)
395{
396 struct devlink *devlink;
2406e7e5 397 int err;
bfcd3a46
JP		 398
399 mutex_lock(&devlink_mutex);
400 devlink = devlink_get_from_info(info);
401 if (IS_ERR(devlink)) {
402 mutex_unlock(&devlink_mutex);
403 return PTR_ERR(devlink);
404 }
2406e7e5
AS		 405 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
406 mutex_lock(&devlink->lock);
1fc2257e
JP		 407 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_DEVLINK) {
408 info->user_ptr[0] = devlink;
409 } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT) {
bfcd3a46
JP		 410 struct devlink_port *devlink_port;
411
bfcd3a46
JP		 412 devlink_port = devlink_port_get_from_info(devlink, info);
413 if (IS_ERR(devlink_port)) {
2406e7e5
AS		 414 err = PTR_ERR(devlink_port);
415 goto unlock;
bfcd3a46 416 }
1fc2257e 417 info->user_ptr[0] = devlink_port;
bfcd3a46 418 }
bf797471
JP		 419 if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_SB) {
420 struct devlink_sb *devlink_sb;
421
422 devlink_sb = devlink_sb_get_from_info(devlink, info);
423 if (IS_ERR(devlink_sb)) {
2406e7e5
AS		 424 err = PTR_ERR(devlink_sb);
425 goto unlock;
bf797471
JP		 426 }
427 info->user_ptr[1] = devlink_sb;
428 }
bfcd3a46 429 return 0;
2406e7e5
AS		 430
431unlock:
432 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
433 mutex_unlock(&devlink->lock);
434 mutex_unlock(&devlink_mutex);
435 return err;
bfcd3a46
JP		 436}
437
438static void devlink_nl_post_doit(const struct genl_ops *ops,
439 struct sk_buff *skb, struct genl_info *info)
440{
2406e7e5
AS		 441 struct devlink *devlink;
442
443 devlink = devlink_get_from_info(info);
444 if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
445 mutex_unlock(&devlink->lock);
bfcd3a46
JP		 446 mutex_unlock(&devlink_mutex);
447}
448
489111e5 449static struct genl_family devlink_nl_family;
bfcd3a46
JP		 450
451enum devlink_multicast_groups {
452 DEVLINK_MCGRP_CONFIG,
453};
454
455static const struct genl_multicast_group devlink_nl_mcgrps[] = {
456 [DEVLINK_MCGRP_CONFIG] = { .name = DEVLINK_GENL_MCGRP_CONFIG_NAME },
457};
458
459static int devlink_nl_put_handle(struct sk_buff *msg, struct devlink *devlink)
460{
461 if (nla_put_string(msg, DEVLINK_ATTR_BUS_NAME, devlink->dev->bus->name))
462 return -EMSGSIZE;
463 if (nla_put_string(msg, DEVLINK_ATTR_DEV_NAME, dev_name(devlink->dev)))
464 return -EMSGSIZE;
465 return 0;
466}
467
468static int devlink_nl_fill(struct sk_buff *msg, struct devlink *devlink,
469 enum devlink_command cmd, u32 portid,
470 u32 seq, int flags)
471{
472 void *hdr;
473
474 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
475 if (!hdr)
476 return -EMSGSIZE;
477
478 if (devlink_nl_put_handle(msg, devlink))
479 goto nla_put_failure;
480
481 genlmsg_end(msg, hdr);
482 return 0;
483
484nla_put_failure:
485 genlmsg_cancel(msg, hdr);
486 return -EMSGSIZE;
487}
488
489static void devlink_notify(struct devlink *devlink, enum devlink_command cmd)
490{
491 struct sk_buff *msg;
492 int err;
493
494 WARN_ON(cmd != DEVLINK_CMD_NEW && cmd != DEVLINK_CMD_DEL);
495
496 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
497 if (!msg)
498 return;
499
500 err = devlink_nl_fill(msg, devlink, cmd, 0, 0, 0);
501 if (err) {
502 nlmsg_free(msg);
503 return;
504 }
505
506 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
507 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
508}
509
b9ffcbaf
JP		 510static int devlink_nl_port_attrs_put(struct sk_buff *msg,
511 struct devlink_port *devlink_port)
512{
513 struct devlink_port_attrs *attrs = &devlink_port->attrs;
514
515 if (!attrs->set)
516 return 0;
5ec1380a
JP		 517 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_FLAVOUR, attrs->flavour))
518 return -EMSGSIZE;
b9ffcbaf
JP		 519 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_NUMBER, attrs->port_number))
520 return -EMSGSIZE;
521 if (!attrs->split)
522 return 0;
523 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_GROUP, attrs->port_number))
524 return -EMSGSIZE;
525 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_SUBPORT_NUMBER,
526 attrs->split_subport_number))
527 return -EMSGSIZE;
528 return 0;
529}
530
bfcd3a46
JP		 531static int devlink_nl_port_fill(struct sk_buff *msg, struct devlink *devlink,
532 struct devlink_port *devlink_port,
533 enum devlink_command cmd, u32 portid,
534 u32 seq, int flags)
535{
536 void *hdr;
537
538 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
539 if (!hdr)
540 return -EMSGSIZE;
541
542 if (devlink_nl_put_handle(msg, devlink))
543 goto nla_put_failure;
544 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
545 goto nla_put_failure;
546 if (nla_put_u16(msg, DEVLINK_ATTR_PORT_TYPE, devlink_port->type))
547 goto nla_put_failure;
548 if (devlink_port->desired_type != DEVLINK_PORT_TYPE_NOTSET &&
549 nla_put_u16(msg, DEVLINK_ATTR_PORT_DESIRED_TYPE,
550 devlink_port->desired_type))
551 goto nla_put_failure;
552 if (devlink_port->type == DEVLINK_PORT_TYPE_ETH) {
553 struct net_device *netdev = devlink_port->type_dev;
554
555 if (netdev &&
556 (nla_put_u32(msg, DEVLINK_ATTR_PORT_NETDEV_IFINDEX,
557 netdev->ifindex) ||
558 nla_put_string(msg, DEVLINK_ATTR_PORT_NETDEV_NAME,
559 netdev->name)))
560 goto nla_put_failure;
561 }
562 if (devlink_port->type == DEVLINK_PORT_TYPE_IB) {
563 struct ib_device *ibdev = devlink_port->type_dev;
564
565 if (ibdev &&
566 nla_put_string(msg, DEVLINK_ATTR_PORT_IBDEV_NAME,
567 ibdev->name))
568 goto nla_put_failure;
569 }
b9ffcbaf 570 if (devlink_nl_port_attrs_put(msg, devlink_port))
bfcd3a46
JP		 571 goto nla_put_failure;
572
573 genlmsg_end(msg, hdr);
574 return 0;
575
576nla_put_failure:
577 genlmsg_cancel(msg, hdr);
578 return -EMSGSIZE;
579}
580
581static void devlink_port_notify(struct devlink_port *devlink_port,
582 enum devlink_command cmd)
583{
584 struct devlink *devlink = devlink_port->devlink;
585 struct sk_buff *msg;
586 int err;
587
588 if (!devlink_port->registered)
589 return;
590
591 WARN_ON(cmd != DEVLINK_CMD_PORT_NEW && cmd != DEVLINK_CMD_PORT_DEL);
592
593 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
594 if (!msg)
595 return;
596
597 err = devlink_nl_port_fill(msg, devlink, devlink_port, cmd, 0, 0, 0);
598 if (err) {
599 nlmsg_free(msg);
600 return;
601 }
602
603 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
604 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
605}
606
607static int devlink_nl_cmd_get_doit(struct sk_buff *skb, struct genl_info *info)
608{
609 struct devlink *devlink = info->user_ptr[0];
610 struct sk_buff *msg;
611 int err;
612
613 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
614 if (!msg)
615 return -ENOMEM;
616
617 err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
618 info->snd_portid, info->snd_seq, 0);
619 if (err) {
620 nlmsg_free(msg);
621 return err;
622 }
623
624 return genlmsg_reply(msg, info);
625}
626
627static int devlink_nl_cmd_get_dumpit(struct sk_buff *msg,
628 struct netlink_callback *cb)
629{
630 struct devlink *devlink;
631 int start = cb->args[0];
632 int idx = 0;
633 int err;
634
635 mutex_lock(&devlink_mutex);
636 list_for_each_entry(devlink, &devlink_list, list) {
637 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
638 continue;
639 if (idx < start) {
640 idx++;
641 continue;
642 }
643 err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
644 NETLINK_CB(cb->skb).portid,
645 cb->nlh->nlmsg_seq, NLM_F_MULTI);
646 if (err)
647 goto out;
648 idx++;
649 }
650out:
651 mutex_unlock(&devlink_mutex);
652
653 cb->args[0] = idx;
654 return msg->len;
655}
656
657static int devlink_nl_cmd_port_get_doit(struct sk_buff *skb,
658 struct genl_info *info)
659{
1fc2257e
JP		 660 struct devlink_port *devlink_port = info->user_ptr[0];
661 struct devlink *devlink = devlink_port->devlink;
bfcd3a46
JP		 662 struct sk_buff *msg;
663 int err;
664
665 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
666 if (!msg)
667 return -ENOMEM;
668
669 err = devlink_nl_port_fill(msg, devlink, devlink_port,
670 DEVLINK_CMD_PORT_NEW,
671 info->snd_portid, info->snd_seq, 0);
672 if (err) {
673 nlmsg_free(msg);
674 return err;
675 }
676
677 return genlmsg_reply(msg, info);
678}
679
680static int devlink_nl_cmd_port_get_dumpit(struct sk_buff *msg,
681 struct netlink_callback *cb)
682{
683 struct devlink *devlink;
684 struct devlink_port *devlink_port;
685 int start = cb->args[0];
686 int idx = 0;
687 int err;
688
689 mutex_lock(&devlink_mutex);
bfcd3a46
JP		 690 list_for_each_entry(devlink, &devlink_list, list) {
691 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
692 continue;
2406e7e5 693 mutex_lock(&devlink->lock);
bfcd3a46
JP		 694 list_for_each_entry(devlink_port, &devlink->port_list, list) {
695 if (idx < start) {
696 idx++;
697 continue;
698 }
699 err = devlink_nl_port_fill(msg, devlink, devlink_port,
700 DEVLINK_CMD_NEW,
701 NETLINK_CB(cb->skb).portid,
702 cb->nlh->nlmsg_seq,
703 NLM_F_MULTI);
2406e7e5
AS		 704 if (err) {
705 mutex_unlock(&devlink->lock);
bfcd3a46 706 goto out;
2406e7e5 707 }
bfcd3a46
JP		 708 idx++;
709 }
2406e7e5 710 mutex_unlock(&devlink->lock);
bfcd3a46
JP		 711 }
712out:
bfcd3a46
JP		 713 mutex_unlock(&devlink_mutex);
714
715 cb->args[0] = idx;
716 return msg->len;
717}
718
719static int devlink_port_type_set(struct devlink *devlink,
720 struct devlink_port *devlink_port,
721 enum devlink_port_type port_type)
722
723{
724 int err;
725
be6fe1d8 726 if (devlink->ops->port_type_set) {
bfcd3a46
JP		 727 if (port_type == DEVLINK_PORT_TYPE_NOTSET)
728 return -EINVAL;
6edf1017
ER		 729 if (port_type == devlink_port->type)
730 return 0;
bfcd3a46
JP		 731 err = devlink->ops->port_type_set(devlink_port, port_type);
732 if (err)
733 return err;
734 devlink_port->desired_type = port_type;
735 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
736 return 0;
737 }
738 return -EOPNOTSUPP;
739}
740
741static int devlink_nl_cmd_port_set_doit(struct sk_buff *skb,
742 struct genl_info *info)
743{
1fc2257e
JP		 744 struct devlink_port *devlink_port = info->user_ptr[0];
745 struct devlink *devlink = devlink_port->devlink;
bfcd3a46
JP		 746 int err;
747
748 if (info->attrs[DEVLINK_ATTR_PORT_TYPE]) {
749 enum devlink_port_type port_type;
750
751 port_type = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_TYPE]);
752 err = devlink_port_type_set(devlink, devlink_port, port_type);
753 if (err)
754 return err;
755 }
756 return 0;
757}
758
ac0fc8a1
DA		 759static int devlink_port_split(struct devlink *devlink, u32 port_index,
760 u32 count, struct netlink_ext_ack *extack)
bfcd3a46
JP		 761
762{
be6fe1d8 763 if (devlink->ops->port_split)
ac0fc8a1
DA		 764 return devlink->ops->port_split(devlink, port_index, count,
765 extack);
bfcd3a46
JP		 766 return -EOPNOTSUPP;
767}
768
769static int devlink_nl_cmd_port_split_doit(struct sk_buff *skb,
770 struct genl_info *info)
771{
772 struct devlink *devlink = info->user_ptr[0];
773 u32 port_index;
774 u32 count;
775
776 if (!info->attrs[DEVLINK_ATTR_PORT_INDEX] ||
777 !info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT])
778 return -EINVAL;
779
780 port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
781 count = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT]);
ac0fc8a1 782 return devlink_port_split(devlink, port_index, count, info->extack);
bfcd3a46
JP		 783}
784
ac0fc8a1
DA		 785static int devlink_port_unsplit(struct devlink *devlink, u32 port_index,
786 struct netlink_ext_ack *extack)
bfcd3a46
JP		 787
788{
be6fe1d8 789 if (devlink->ops->port_unsplit)
ac0fc8a1 790 return devlink->ops->port_unsplit(devlink, port_index, extack);
bfcd3a46
JP		 791 return -EOPNOTSUPP;
792}
793
794static int devlink_nl_cmd_port_unsplit_doit(struct sk_buff *skb,
795 struct genl_info *info)
796{
797 struct devlink *devlink = info->user_ptr[0];
798 u32 port_index;
799
800 if (!info->attrs[DEVLINK_ATTR_PORT_INDEX])
801 return -EINVAL;
802
803 port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
ac0fc8a1 804 return devlink_port_unsplit(devlink, port_index, info->extack);
bfcd3a46
JP		 805}
806
bf797471
JP		 807static int devlink_nl_sb_fill(struct sk_buff *msg, struct devlink *devlink,
808 struct devlink_sb *devlink_sb,
809 enum devlink_command cmd, u32 portid,
810 u32 seq, int flags)
811{
812 void *hdr;
813
814 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
815 if (!hdr)
816 return -EMSGSIZE;
817
818 if (devlink_nl_put_handle(msg, devlink))
819 goto nla_put_failure;
820 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
821 goto nla_put_failure;
822 if (nla_put_u32(msg, DEVLINK_ATTR_SB_SIZE, devlink_sb->size))
823 goto nla_put_failure;
824 if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_POOL_COUNT,
825 devlink_sb->ingress_pools_count))
826 goto nla_put_failure;
827 if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_POOL_COUNT,
828 devlink_sb->egress_pools_count))
829 goto nla_put_failure;
830 if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_TC_COUNT,
831 devlink_sb->ingress_tc_count))
832 goto nla_put_failure;
833 if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_TC_COUNT,
834 devlink_sb->egress_tc_count))
835 goto nla_put_failure;
836
837 genlmsg_end(msg, hdr);
838 return 0;
839
840nla_put_failure:
841 genlmsg_cancel(msg, hdr);
842 return -EMSGSIZE;
843}
844
845static int devlink_nl_cmd_sb_get_doit(struct sk_buff *skb,
846 struct genl_info *info)
847{
848 struct devlink *devlink = info->user_ptr[0];
849 struct devlink_sb *devlink_sb = info->user_ptr[1];
850 struct sk_buff *msg;
851 int err;
852
853 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
854 if (!msg)
855 return -ENOMEM;
856
857 err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
858 DEVLINK_CMD_SB_NEW,
859 info->snd_portid, info->snd_seq, 0);
860 if (err) {
861 nlmsg_free(msg);
862 return err;
863 }
864
865 return genlmsg_reply(msg, info);
866}
867
868static int devlink_nl_cmd_sb_get_dumpit(struct sk_buff *msg,
869 struct netlink_callback *cb)
870{
871 struct devlink *devlink;
872 struct devlink_sb *devlink_sb;
873 int start = cb->args[0];
874 int idx = 0;
875 int err;
876
877 mutex_lock(&devlink_mutex);
878 list_for_each_entry(devlink, &devlink_list, list) {
879 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
880 continue;
2406e7e5 881 mutex_lock(&devlink->lock);
bf797471
JP		 882 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
883 if (idx < start) {
884 idx++;
885 continue;
886 }
887 err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
888 DEVLINK_CMD_SB_NEW,
889 NETLINK_CB(cb->skb).portid,
890 cb->nlh->nlmsg_seq,
891 NLM_F_MULTI);
2406e7e5
AS		 892 if (err) {
893 mutex_unlock(&devlink->lock);
bf797471 894 goto out;
2406e7e5 895 }
bf797471
JP		 896 idx++;
897 }
2406e7e5 898 mutex_unlock(&devlink->lock);
bf797471
JP		 899 }
900out:
901 mutex_unlock(&devlink_mutex);
902
903 cb->args[0] = idx;
904 return msg->len;
905}
906
907static int devlink_nl_sb_pool_fill(struct sk_buff *msg, struct devlink *devlink,
908 struct devlink_sb *devlink_sb,
909 u16 pool_index, enum devlink_command cmd,
910 u32 portid, u32 seq, int flags)
911{
912 struct devlink_sb_pool_info pool_info;
913 void *hdr;
914 int err;
915
916 err = devlink->ops->sb_pool_get(devlink, devlink_sb->index,
917 pool_index, &pool_info);
918 if (err)
919 return err;
920
921 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
922 if (!hdr)
923 return -EMSGSIZE;
924
925 if (devlink_nl_put_handle(msg, devlink))
926 goto nla_put_failure;
927 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
928 goto nla_put_failure;
929 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
930 goto nla_put_failure;
931 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_info.pool_type))
932 goto nla_put_failure;
933 if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_SIZE, pool_info.size))
934 goto nla_put_failure;
935 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE,
936 pool_info.threshold_type))
937 goto nla_put_failure;
bff5731d
JK		 938 if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_CELL_SIZE,
939 pool_info.cell_size))
940 goto nla_put_failure;
bf797471
JP		 941
942 genlmsg_end(msg, hdr);
943 return 0;
944
945nla_put_failure:
946 genlmsg_cancel(msg, hdr);
947 return -EMSGSIZE;
948}
949
950static int devlink_nl_cmd_sb_pool_get_doit(struct sk_buff *skb,
951 struct genl_info *info)
952{
953 struct devlink *devlink = info->user_ptr[0];
954 struct devlink_sb *devlink_sb = info->user_ptr[1];
955 struct sk_buff *msg;
956 u16 pool_index;
957 int err;
958
959 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
960 &pool_index);
961 if (err)
962 return err;
963
be6fe1d8 964 if (!devlink->ops->sb_pool_get)
bf797471
JP		 965 return -EOPNOTSUPP;
966
967 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
968 if (!msg)
969 return -ENOMEM;
970
971 err = devlink_nl_sb_pool_fill(msg, devlink, devlink_sb, pool_index,
972 DEVLINK_CMD_SB_POOL_NEW,
973 info->snd_portid, info->snd_seq, 0);
974 if (err) {
975 nlmsg_free(msg);
976 return err;
977 }
978
979 return genlmsg_reply(msg, info);
980}
981
982static int __sb_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
983 struct devlink *devlink,
984 struct devlink_sb *devlink_sb,
985 u32 portid, u32 seq)
986{
987 u16 pool_count = devlink_sb_pool_count(devlink_sb);
988 u16 pool_index;
989 int err;
990
991 for (pool_index = 0; pool_index < pool_count; pool_index++) {
992 if (*p_idx < start) {
993 (*p_idx)++;
994 continue;
995 }
996 err = devlink_nl_sb_pool_fill(msg, devlink,
997 devlink_sb,
998 pool_index,
999 DEVLINK_CMD_SB_POOL_NEW,
1000 portid, seq, NLM_F_MULTI);
1001 if (err)
1002 return err;
1003 (*p_idx)++;
1004 }
1005 return 0;
1006}
1007
1008static int devlink_nl_cmd_sb_pool_get_dumpit(struct sk_buff *msg,
1009 struct netlink_callback *cb)
1010{
1011 struct devlink *devlink;
1012 struct devlink_sb *devlink_sb;
1013 int start = cb->args[0];
1014 int idx = 0;
1015 int err;
1016
1017 mutex_lock(&devlink_mutex);
1018 list_for_each_entry(devlink, &devlink_list, list) {
1019 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
be6fe1d8 1020 !devlink->ops->sb_pool_get)
bf797471 1021 continue;
2406e7e5 1022 mutex_lock(&devlink->lock);
bf797471
JP		 1023 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
1024 err = __sb_pool_get_dumpit(msg, start, &idx, devlink,
1025 devlink_sb,
1026 NETLINK_CB(cb->skb).portid,
1027 cb->nlh->nlmsg_seq);
2406e7e5
AS		 1028 if (err && err != -EOPNOTSUPP) {
1029 mutex_unlock(&devlink->lock);
bf797471 1030 goto out;
2406e7e5 1031 }
bf797471 1032 }
2406e7e5 1033 mutex_unlock(&devlink->lock);
bf797471
JP		 1034 }
1035out:
1036 mutex_unlock(&devlink_mutex);
1037
1038 cb->args[0] = idx;
1039 return msg->len;
1040}
1041
1042static int devlink_sb_pool_set(struct devlink *devlink, unsigned int sb_index,
1043 u16 pool_index, u32 size,
1044 enum devlink_sb_threshold_type threshold_type)
1045
1046{
1047 const struct devlink_ops *ops = devlink->ops;
1048
be6fe1d8 1049 if (ops->sb_pool_set)
bf797471
JP		 1050 return ops->sb_pool_set(devlink, sb_index, pool_index,
1051 size, threshold_type);
1052 return -EOPNOTSUPP;
1053}
1054
1055static int devlink_nl_cmd_sb_pool_set_doit(struct sk_buff *skb,
1056 struct genl_info *info)
1057{
1058 struct devlink *devlink = info->user_ptr[0];
1059 struct devlink_sb *devlink_sb = info->user_ptr[1];
1060 enum devlink_sb_threshold_type threshold_type;
1061 u16 pool_index;
1062 u32 size;
1063 int err;
1064
1065 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1066 &pool_index);
1067 if (err)
1068 return err;
1069
1070 err = devlink_sb_th_type_get_from_info(info, &threshold_type);
1071 if (err)
1072 return err;
1073
1074 if (!info->attrs[DEVLINK_ATTR_SB_POOL_SIZE])
1075 return -EINVAL;
1076
1077 size = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_POOL_SIZE]);
1078 return devlink_sb_pool_set(devlink, devlink_sb->index,
1079 pool_index, size, threshold_type);
1080}
1081
1082static int devlink_nl_sb_port_pool_fill(struct sk_buff *msg,
1083 struct devlink *devlink,
1084 struct devlink_port *devlink_port,
1085 struct devlink_sb *devlink_sb,
1086 u16 pool_index,
1087 enum devlink_command cmd,
1088 u32 portid, u32 seq, int flags)
1089{
df38dafd 1090 const struct devlink_ops *ops = devlink->ops;
bf797471
JP		 1091 u32 threshold;
1092 void *hdr;
1093 int err;
1094
df38dafd
JP		 1095 err = ops->sb_port_pool_get(devlink_port, devlink_sb->index,
1096 pool_index, &threshold);
bf797471
JP		 1097 if (err)
1098 return err;
1099
1100 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1101 if (!hdr)
1102 return -EMSGSIZE;
1103
1104 if (devlink_nl_put_handle(msg, devlink))
1105 goto nla_put_failure;
1106 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
1107 goto nla_put_failure;
1108 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
1109 goto nla_put_failure;
1110 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
1111 goto nla_put_failure;
1112 if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
1113 goto nla_put_failure;
1114
df38dafd
JP		 1115 if (ops->sb_occ_port_pool_get) {
1116 u32 cur;
1117 u32 max;
1118
1119 err = ops->sb_occ_port_pool_get(devlink_port, devlink_sb->index,
1120 pool_index, &cur, &max);
1121 if (err && err != -EOPNOTSUPP)
1122 return err;
1123 if (!err) {
1124 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
1125 goto nla_put_failure;
1126 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
1127 goto nla_put_failure;
1128 }
1129 }
1130
bf797471
JP		 1131 genlmsg_end(msg, hdr);
1132 return 0;
1133
1134nla_put_failure:
1135 genlmsg_cancel(msg, hdr);
1136 return -EMSGSIZE;
1137}
1138
1139static int devlink_nl_cmd_sb_port_pool_get_doit(struct sk_buff *skb,
1140 struct genl_info *info)
1141{
1142 struct devlink_port *devlink_port = info->user_ptr[0];
1143 struct devlink *devlink = devlink_port->devlink;
1144 struct devlink_sb *devlink_sb = info->user_ptr[1];
1145 struct sk_buff *msg;
1146 u16 pool_index;
1147 int err;
1148
1149 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1150 &pool_index);
1151 if (err)
1152 return err;
1153
be6fe1d8 1154 if (!devlink->ops->sb_port_pool_get)
bf797471
JP		 1155 return -EOPNOTSUPP;
1156
1157 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1158 if (!msg)
1159 return -ENOMEM;
1160
1161 err = devlink_nl_sb_port_pool_fill(msg, devlink, devlink_port,
1162 devlink_sb, pool_index,
1163 DEVLINK_CMD_SB_PORT_POOL_NEW,
1164 info->snd_portid, info->snd_seq, 0);
1165 if (err) {
1166 nlmsg_free(msg);
1167 return err;
1168 }
1169
1170 return genlmsg_reply(msg, info);
1171}
1172
1173static int __sb_port_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
1174 struct devlink *devlink,
1175 struct devlink_sb *devlink_sb,
1176 u32 portid, u32 seq)
1177{
1178 struct devlink_port *devlink_port;
1179 u16 pool_count = devlink_sb_pool_count(devlink_sb);
1180 u16 pool_index;
1181 int err;
1182
1183 list_for_each_entry(devlink_port, &devlink->port_list, list) {
1184 for (pool_index = 0; pool_index < pool_count; pool_index++) {
1185 if (*p_idx < start) {
1186 (*p_idx)++;
1187 continue;
1188 }
1189 err = devlink_nl_sb_port_pool_fill(msg, devlink,
1190 devlink_port,
1191 devlink_sb,
1192 pool_index,
1193 DEVLINK_CMD_SB_PORT_POOL_NEW,
1194 portid, seq,
1195 NLM_F_MULTI);
1196 if (err)
1197 return err;
1198 (*p_idx)++;
1199 }
1200 }
1201 return 0;
1202}
1203
1204static int devlink_nl_cmd_sb_port_pool_get_dumpit(struct sk_buff *msg,
1205 struct netlink_callback *cb)
1206{
1207 struct devlink *devlink;
1208 struct devlink_sb *devlink_sb;
1209 int start = cb->args[0];
1210 int idx = 0;
1211 int err;
1212
1213 mutex_lock(&devlink_mutex);
bf797471
JP		 1214 list_for_each_entry(devlink, &devlink_list, list) {
1215 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
be6fe1d8 1216 !devlink->ops->sb_port_pool_get)
bf797471 1217 continue;
2406e7e5 1218 mutex_lock(&devlink->lock);
bf797471
JP		 1219 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
1220 err = __sb_port_pool_get_dumpit(msg, start, &idx,
1221 devlink, devlink_sb,
1222 NETLINK_CB(cb->skb).portid,
1223 cb->nlh->nlmsg_seq);
2406e7e5
AS		 1224 if (err && err != -EOPNOTSUPP) {
1225 mutex_unlock(&devlink->lock);
bf797471 1226 goto out;
2406e7e5 1227 }
bf797471 1228 }
2406e7e5 1229 mutex_unlock(&devlink->lock);
bf797471
JP		 1230 }
1231out:
bf797471
JP		 1232 mutex_unlock(&devlink_mutex);
1233
1234 cb->args[0] = idx;
1235 return msg->len;
1236}
1237
1238static int devlink_sb_port_pool_set(struct devlink_port *devlink_port,
1239 unsigned int sb_index, u16 pool_index,
1240 u32 threshold)
1241
1242{
1243 const struct devlink_ops *ops = devlink_port->devlink->ops;
1244
be6fe1d8 1245 if (ops->sb_port_pool_set)
bf797471
JP		 1246 return ops->sb_port_pool_set(devlink_port, sb_index,
1247 pool_index, threshold);
1248 return -EOPNOTSUPP;
1249}
1250
1251static int devlink_nl_cmd_sb_port_pool_set_doit(struct sk_buff *skb,
1252 struct genl_info *info)
1253{
1254 struct devlink_port *devlink_port = info->user_ptr[0];
1255 struct devlink_sb *devlink_sb = info->user_ptr[1];
1256 u16 pool_index;
1257 u32 threshold;
1258 int err;
1259
1260 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1261 &pool_index);
1262 if (err)
1263 return err;
1264
1265 if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD])
1266 return -EINVAL;
1267
1268 threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
1269 return devlink_sb_port_pool_set(devlink_port, devlink_sb->index,
1270 pool_index, threshold);
1271}
1272
1273static int
1274devlink_nl_sb_tc_pool_bind_fill(struct sk_buff *msg, struct devlink *devlink,
1275 struct devlink_port *devlink_port,
1276 struct devlink_sb *devlink_sb, u16 tc_index,
1277 enum devlink_sb_pool_type pool_type,
1278 enum devlink_command cmd,
1279 u32 portid, u32 seq, int flags)
1280{
df38dafd 1281 const struct devlink_ops *ops = devlink->ops;
bf797471
JP		 1282 u16 pool_index;
1283 u32 threshold;
1284 void *hdr;
1285 int err;
1286
df38dafd
JP		 1287 err = ops->sb_tc_pool_bind_get(devlink_port, devlink_sb->index,
1288 tc_index, pool_type,
1289 &pool_index, &threshold);
bf797471
JP		 1290 if (err)
1291 return err;
1292
1293 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1294 if (!hdr)
1295 return -EMSGSIZE;
1296
1297 if (devlink_nl_put_handle(msg, devlink))
1298 goto nla_put_failure;
1299 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
1300 goto nla_put_failure;
1301 if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
1302 goto nla_put_failure;
1303 if (nla_put_u16(msg, DEVLINK_ATTR_SB_TC_INDEX, tc_index))
1304 goto nla_put_failure;
1305 if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_type))
1306 goto nla_put_failure;
1307 if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
1308 goto nla_put_failure;
1309 if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
1310 goto nla_put_failure;
1311
df38dafd
JP		 1312 if (ops->sb_occ_tc_port_bind_get) {
1313 u32 cur;
1314 u32 max;
1315
1316 err = ops->sb_occ_tc_port_bind_get(devlink_port,
1317 devlink_sb->index,
1318 tc_index, pool_type,
1319 &cur, &max);
1320 if (err && err != -EOPNOTSUPP)
1321 return err;
1322 if (!err) {
1323 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
1324 goto nla_put_failure;
1325 if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
1326 goto nla_put_failure;
1327 }
1328 }
1329
bf797471
JP		 1330 genlmsg_end(msg, hdr);
1331 return 0;
1332
1333nla_put_failure:
1334 genlmsg_cancel(msg, hdr);
1335 return -EMSGSIZE;
1336}
1337
1338static int devlink_nl_cmd_sb_tc_pool_bind_get_doit(struct sk_buff *skb,
1339 struct genl_info *info)
1340{
1341 struct devlink_port *devlink_port = info->user_ptr[0];
1342 struct devlink *devlink = devlink_port->devlink;
1343 struct devlink_sb *devlink_sb = info->user_ptr[1];
1344 struct sk_buff *msg;
1345 enum devlink_sb_pool_type pool_type;
1346 u16 tc_index;
1347 int err;
1348
1349 err = devlink_sb_pool_type_get_from_info(info, &pool_type);
1350 if (err)
1351 return err;
1352
1353 err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
1354 pool_type, &tc_index);
1355 if (err)
1356 return err;
1357
be6fe1d8 1358 if (!devlink->ops->sb_tc_pool_bind_get)
bf797471
JP		 1359 return -EOPNOTSUPP;
1360
1361 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1362 if (!msg)
1363 return -ENOMEM;
1364
1365 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink, devlink_port,
1366 devlink_sb, tc_index, pool_type,
1367 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
1368 info->snd_portid,
1369 info->snd_seq, 0);
1370 if (err) {
1371 nlmsg_free(msg);
1372 return err;
1373 }
1374
1375 return genlmsg_reply(msg, info);
1376}
1377
1378static int __sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
1379 int start, int *p_idx,
1380 struct devlink *devlink,
1381 struct devlink_sb *devlink_sb,
1382 u32 portid, u32 seq)
1383{
1384 struct devlink_port *devlink_port;
1385 u16 tc_index;
1386 int err;
1387
1388 list_for_each_entry(devlink_port, &devlink->port_list, list) {
1389 for (tc_index = 0;
1390 tc_index < devlink_sb->ingress_tc_count; tc_index++) {
1391 if (*p_idx < start) {
1392 (*p_idx)++;
1393 continue;
1394 }
1395 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
1396 devlink_port,
1397 devlink_sb,
1398 tc_index,
1399 DEVLINK_SB_POOL_TYPE_INGRESS,
1400 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
1401 portid, seq,
1402 NLM_F_MULTI);
1403 if (err)
1404 return err;
1405 (*p_idx)++;
1406 }
1407 for (tc_index = 0;
1408 tc_index < devlink_sb->egress_tc_count; tc_index++) {
1409 if (*p_idx < start) {
1410 (*p_idx)++;
1411 continue;
1412 }
1413 err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
1414 devlink_port,
1415 devlink_sb,
1416 tc_index,
1417 DEVLINK_SB_POOL_TYPE_EGRESS,
1418 DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
1419 portid, seq,
1420 NLM_F_MULTI);
1421 if (err)
1422 return err;
1423 (*p_idx)++;
1424 }
1425 }
1426 return 0;
1427}
1428
1429static int
1430devlink_nl_cmd_sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
1431 struct netlink_callback *cb)
1432{
1433 struct devlink *devlink;
1434 struct devlink_sb *devlink_sb;
1435 int start = cb->args[0];
1436 int idx = 0;
1437 int err;
1438
1439 mutex_lock(&devlink_mutex);
bf797471
JP		 1440 list_for_each_entry(devlink, &devlink_list, list) {
1441 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
be6fe1d8 1442 !devlink->ops->sb_tc_pool_bind_get)
bf797471 1443 continue;
2406e7e5
AS		 1444
1445 mutex_lock(&devlink->lock);
bf797471
JP		 1446 list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
1447 err = __sb_tc_pool_bind_get_dumpit(msg, start, &idx,
1448 devlink,
1449 devlink_sb,
1450 NETLINK_CB(cb->skb).portid,
1451 cb->nlh->nlmsg_seq);
2406e7e5
AS		 1452 if (err && err != -EOPNOTSUPP) {
1453 mutex_unlock(&devlink->lock);
bf797471 1454 goto out;
2406e7e5 1455 }
bf797471 1456 }
2406e7e5 1457 mutex_unlock(&devlink->lock);
bf797471
JP		 1458 }
1459out:
bf797471
JP		 1460 mutex_unlock(&devlink_mutex);
1461
1462 cb->args[0] = idx;
1463 return msg->len;
1464}
1465
1466static int devlink_sb_tc_pool_bind_set(struct devlink_port *devlink_port,
1467 unsigned int sb_index, u16 tc_index,
1468 enum devlink_sb_pool_type pool_type,
1469 u16 pool_index, u32 threshold)
1470
1471{
1472 const struct devlink_ops *ops = devlink_port->devlink->ops;
1473
be6fe1d8 1474 if (ops->sb_tc_pool_bind_set)
bf797471
JP		 1475 return ops->sb_tc_pool_bind_set(devlink_port, sb_index,
1476 tc_index, pool_type,
1477 pool_index, threshold);
1478 return -EOPNOTSUPP;
1479}
1480
1481static int devlink_nl_cmd_sb_tc_pool_bind_set_doit(struct sk_buff *skb,
1482 struct genl_info *info)
1483{
1484 struct devlink_port *devlink_port = info->user_ptr[0];
1485 struct devlink_sb *devlink_sb = info->user_ptr[1];
1486 enum devlink_sb_pool_type pool_type;
1487 u16 tc_index;
1488 u16 pool_index;
1489 u32 threshold;
1490 int err;
1491
1492 err = devlink_sb_pool_type_get_from_info(info, &pool_type);
1493 if (err)
1494 return err;
1495
1496 err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
1497 pool_type, &tc_index);
1498 if (err)
1499 return err;
1500
1501 err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
1502 &pool_index);
1503 if (err)
1504 return err;
1505
1506 if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD])
1507 return -EINVAL;
1508
1509 threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
1510 return devlink_sb_tc_pool_bind_set(devlink_port, devlink_sb->index,
1511 tc_index, pool_type,
1512 pool_index, threshold);
1513}
1514
df38dafd
JP		 1515static int devlink_nl_cmd_sb_occ_snapshot_doit(struct sk_buff *skb,
1516 struct genl_info *info)
1517{
1518 struct devlink *devlink = info->user_ptr[0];
1519 struct devlink_sb *devlink_sb = info->user_ptr[1];
1520 const struct devlink_ops *ops = devlink->ops;
1521
be6fe1d8 1522 if (ops->sb_occ_snapshot)
df38dafd
JP		 1523 return ops->sb_occ_snapshot(devlink, devlink_sb->index);
1524 return -EOPNOTSUPP;
1525}
1526
1527static int devlink_nl_cmd_sb_occ_max_clear_doit(struct sk_buff *skb,
1528 struct genl_info *info)
1529{
1530 struct devlink *devlink = info->user_ptr[0];
1531 struct devlink_sb *devlink_sb = info->user_ptr[1];
1532 const struct devlink_ops *ops = devlink->ops;
1533
be6fe1d8 1534 if (ops->sb_occ_max_clear)
df38dafd
JP		 1535 return ops->sb_occ_max_clear(devlink, devlink_sb->index);
1536 return -EOPNOTSUPP;
1537}
1538
21e3d2dd
JP		 1539static int devlink_nl_eswitch_fill(struct sk_buff *msg, struct devlink *devlink,
1540 enum devlink_command cmd, u32 portid,
1541 u32 seq, int flags)
08f4b591 1542{
59bfde01 1543 const struct devlink_ops *ops = devlink->ops;
f43e9b06 1544 u8 inline_mode, encap_mode;
08f4b591 1545 void *hdr;
59bfde01
RD		 1546 int err = 0;
1547 u16 mode;
08f4b591
OG		 1548
1549 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
1550 if (!hdr)
1551 return -EMSGSIZE;
1552
59bfde01
RD		 1553 err = devlink_nl_put_handle(msg, devlink);
1554 if (err)
1a6aa36b 1555 goto nla_put_failure;
08f4b591 1556
4456f61c
JP		 1557 if (ops->eswitch_mode_get) {
1558 err = ops->eswitch_mode_get(devlink, &mode);
1559 if (err)
1560 goto nla_put_failure;
1561 err = nla_put_u16(msg, DEVLINK_ATTR_ESWITCH_MODE, mode);
1562 if (err)
1563 goto nla_put_failure;
1564 }
59bfde01
RD		 1565
1566 if (ops->eswitch_inline_mode_get) {
1567 err = ops->eswitch_inline_mode_get(devlink, &inline_mode);
1568 if (err)
1a6aa36b 1569 goto nla_put_failure;
59bfde01
RD		 1570 err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_INLINE_MODE,
1571 inline_mode);
1572 if (err)
1a6aa36b 1573 goto nla_put_failure;
59bfde01 1574 }
08f4b591 1575
f43e9b06
RD		 1576 if (ops->eswitch_encap_mode_get) {
1577 err = ops->eswitch_encap_mode_get(devlink, &encap_mode);
1578 if (err)
1579 goto nla_put_failure;
1580 err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_ENCAP_MODE, encap_mode);
1581 if (err)
1582 goto nla_put_failure;
1583 }
1584
08f4b591
OG		 1585 genlmsg_end(msg, hdr);
1586 return 0;
1587
1a6aa36b 1588nla_put_failure:
08f4b591 1589 genlmsg_cancel(msg, hdr);
59bfde01 1590 return err;
08f4b591
OG		 1591}
1592
adf200f3
JP		 1593static int devlink_nl_cmd_eswitch_get_doit(struct sk_buff *skb,
1594 struct genl_info *info)
08f4b591
OG		 1595{
1596 struct devlink *devlink = info->user_ptr[0];
08f4b591 1597 struct sk_buff *msg;
08f4b591
OG		 1598 int err;
1599
08f4b591
OG		 1600 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1601 if (!msg)
1602 return -ENOMEM;
1603
21e3d2dd
JP		 1604 err = devlink_nl_eswitch_fill(msg, devlink, DEVLINK_CMD_ESWITCH_GET,
1605 info->snd_portid, info->snd_seq, 0);
08f4b591
OG		 1606
1607 if (err) {
1608 nlmsg_free(msg);
1609 return err;
1610 }
1611
1612 return genlmsg_reply(msg, info);
1613}
1614
adf200f3
JP		 1615static int devlink_nl_cmd_eswitch_set_doit(struct sk_buff *skb,
1616 struct genl_info *info)
08f4b591
OG		 1617{
1618 struct devlink *devlink = info->user_ptr[0];
1619 const struct devlink_ops *ops = devlink->ops;
f43e9b06 1620 u8 inline_mode, encap_mode;
59bfde01 1621 int err = 0;
f43e9b06 1622 u16 mode;
08f4b591 1623
59bfde01
RD		 1624 if (info->attrs[DEVLINK_ATTR_ESWITCH_MODE]) {
1625 if (!ops->eswitch_mode_set)
1626 return -EOPNOTSUPP;
1627 mode = nla_get_u16(info->attrs[DEVLINK_ATTR_ESWITCH_MODE]);
db7ff19e 1628 err = ops->eswitch_mode_set(devlink, mode, info->extack);
59bfde01
RD		 1629 if (err)
1630 return err;
1631 }
08f4b591 1632
59bfde01
RD		 1633 if (info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]) {
1634 if (!ops->eswitch_inline_mode_set)
1635 return -EOPNOTSUPP;
1636 inline_mode = nla_get_u8(
1637 info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]);
db7ff19e
EB		 1638 err = ops->eswitch_inline_mode_set(devlink, inline_mode,
1639 info->extack);
59bfde01
RD		 1640 if (err)
1641 return err;
1642 }
f43e9b06
RD		 1643
1644 if (info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]) {
1645 if (!ops->eswitch_encap_mode_set)
1646 return -EOPNOTSUPP;
1647 encap_mode = nla_get_u8(info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]);
db7ff19e
EB		 1648 err = ops->eswitch_encap_mode_set(devlink, encap_mode,
1649 info->extack);
f43e9b06
RD		 1650 if (err)
1651 return err;
1652 }
1653
1555d204
AS		 1654 return 0;
1655}
1656
1657int devlink_dpipe_match_put(struct sk_buff *skb,
1658 struct devlink_dpipe_match *match)
1659{
1660 struct devlink_dpipe_header *header = match->header;
1661 struct devlink_dpipe_field *field = &header->fields[match->field_id];
1662 struct nlattr *match_attr;
1663
1664 match_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_MATCH);
1665 if (!match_attr)
1666 return -EMSGSIZE;
1667
1668 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_MATCH_TYPE, match->type) ||
1669 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, match->header_index) ||
1670 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
1671 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
1672 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
1673 goto nla_put_failure;
1674
1675 nla_nest_end(skb, match_attr);
1676 return 0;
1677
1678nla_put_failure:
1679 nla_nest_cancel(skb, match_attr);
1680 return -EMSGSIZE;
1681}
1682EXPORT_SYMBOL_GPL(devlink_dpipe_match_put);
1683
1684static int devlink_dpipe_matches_put(struct devlink_dpipe_table *table,
1685 struct sk_buff *skb)
1686{
1687 struct nlattr *matches_attr;
1688
1689 matches_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_TABLE_MATCHES);
1690 if (!matches_attr)
1691 return -EMSGSIZE;
1692
1693 if (table->table_ops->matches_dump(table->priv, skb))
1694 goto nla_put_failure;
1695
1696 nla_nest_end(skb, matches_attr);
1697 return 0;
1698
1699nla_put_failure:
1700 nla_nest_cancel(skb, matches_attr);
1701 return -EMSGSIZE;
1702}
1703
1704int devlink_dpipe_action_put(struct sk_buff *skb,
1705 struct devlink_dpipe_action *action)
1706{
1707 struct devlink_dpipe_header *header = action->header;
1708 struct devlink_dpipe_field *field = &header->fields[action->field_id];
1709 struct nlattr *action_attr;
1710
1711 action_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_ACTION);
1712 if (!action_attr)
1713 return -EMSGSIZE;
1714
1715 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_ACTION_TYPE, action->type) ||
1716 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, action->header_index) ||
1717 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
1718 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
1719 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
1720 goto nla_put_failure;
1721
1722 nla_nest_end(skb, action_attr);
1723 return 0;
1724
1725nla_put_failure:
1726 nla_nest_cancel(skb, action_attr);
1727 return -EMSGSIZE;
1728}
1729EXPORT_SYMBOL_GPL(devlink_dpipe_action_put);
1730
1731static int devlink_dpipe_actions_put(struct devlink_dpipe_table *table,
1732 struct sk_buff *skb)
1733{
1734 struct nlattr *actions_attr;
1735
1736 actions_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_TABLE_ACTIONS);
1737 if (!actions_attr)
1738 return -EMSGSIZE;
1739
1740 if (table->table_ops->actions_dump(table->priv, skb))
1741 goto nla_put_failure;
1742
1743 nla_nest_end(skb, actions_attr);
1744 return 0;
1745
1746nla_put_failure:
1747 nla_nest_cancel(skb, actions_attr);
1748 return -EMSGSIZE;
1749}
1750
1751static int devlink_dpipe_table_put(struct sk_buff *skb,
1752 struct devlink_dpipe_table *table)
1753{
1754 struct nlattr *table_attr;
ffd3cdcc 1755 u64 table_size;
1555d204 1756
ffd3cdcc 1757 table_size = table->table_ops->size_get(table->priv);
1555d204
AS		 1758 table_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_TABLE);
1759 if (!table_attr)
1760 return -EMSGSIZE;
1761
1762 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_TABLE_NAME, table->name) ||
ffd3cdcc 1763 nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_SIZE, table_size,
1555d204
AS		 1764 DEVLINK_ATTR_PAD))
1765 goto nla_put_failure;
1766 if (nla_put_u8(skb, DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED,
1767 table->counters_enabled))
1768 goto nla_put_failure;
1769
56dc7cd0 1770 if (table->resource_valid) {
3d18e4f1
AS		 1771 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_ID,
1772 table->resource_id, DEVLINK_ATTR_PAD) ||
1773 nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_UNITS,
1774 table->resource_units, DEVLINK_ATTR_PAD))
1775 goto nla_put_failure;
56dc7cd0 1776 }
1555d204
AS		 1777 if (devlink_dpipe_matches_put(table, skb))
1778 goto nla_put_failure;
1779
1780 if (devlink_dpipe_actions_put(table, skb))
1781 goto nla_put_failure;
1782
1783 nla_nest_end(skb, table_attr);
1784 return 0;
1785
1786nla_put_failure:
1787 nla_nest_cancel(skb, table_attr);
1788 return -EMSGSIZE;
1789}
1790
1791static int devlink_dpipe_send_and_alloc_skb(struct sk_buff **pskb,
1792 struct genl_info *info)
1793{
1794 int err;
1795
1796 if (*pskb) {
1797 err = genlmsg_reply(*pskb, info);
1798 if (err)
1799 return err;
1800 }
1801 *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
1802 if (!*pskb)
1803 return -ENOMEM;
1804 return 0;
1805}
1806
1807static int devlink_dpipe_tables_fill(struct genl_info *info,
1808 enum devlink_command cmd, int flags,
1809 struct list_head *dpipe_tables,
1810 const char *table_name)
1811{
1812 struct devlink *devlink = info->user_ptr[0];
1813 struct devlink_dpipe_table *table;
1814 struct nlattr *tables_attr;
1815 struct sk_buff *skb = NULL;
1816 struct nlmsghdr *nlh;
1817 bool incomplete;
1818 void *hdr;
1819 int i;
1820 int err;
1821
1822 table = list_first_entry(dpipe_tables,
1823 struct devlink_dpipe_table, list);
1824start_again:
1825 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
1826 if (err)
1827 return err;
1828
1829 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
1830 &devlink_nl_family, NLM_F_MULTI, cmd);
6044bd4a
HY		 1831 if (!hdr) {
1832 nlmsg_free(skb);
1555d204 1833 return -EMSGSIZE;
6044bd4a 1834 }
1555d204
AS		 1835
1836 if (devlink_nl_put_handle(skb, devlink))
1837 goto nla_put_failure;
1838 tables_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_TABLES);
1839 if (!tables_attr)
1840 goto nla_put_failure;
1841
1842 i = 0;
1843 incomplete = false;
1844 list_for_each_entry_from(table, dpipe_tables, list) {
1845 if (!table_name) {
1846 err = devlink_dpipe_table_put(skb, table);
1847 if (err) {
1848 if (!i)
1849 goto err_table_put;
1850 incomplete = true;
1851 break;
1852 }
1853 } else {
1854 if (!strcmp(table->name, table_name)) {
1855 err = devlink_dpipe_table_put(skb, table);
1856 if (err)
1857 break;
1858 }
1859 }
1860 i++;
1861 }
1862
1863 nla_nest_end(skb, tables_attr);
1864 genlmsg_end(skb, hdr);
1865 if (incomplete)
1866 goto start_again;
1867
1868send_done:
1869 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
1870 NLMSG_DONE, 0, flags | NLM_F_MULTI);
1871 if (!nlh) {
1872 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
1873 if (err)
7fe4d6dc 1874 return err;
1555d204
AS		 1875 goto send_done;
1876 }
1877
1878 return genlmsg_reply(skb, info);
1879
1880nla_put_failure:
1881 err = -EMSGSIZE;
1882err_table_put:
1555d204
AS		 1883 nlmsg_free(skb);
1884 return err;
1885}
1886
1887static int devlink_nl_cmd_dpipe_table_get(struct sk_buff *skb,
1888 struct genl_info *info)
1889{
1890 struct devlink *devlink = info->user_ptr[0];
1891 const char *table_name = NULL;
1892
1893 if (info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
1894 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
1895
1896 return devlink_dpipe_tables_fill(info, DEVLINK_CMD_DPIPE_TABLE_GET, 0,
1897 &devlink->dpipe_table_list,
1898 table_name);
1899}
1900
1901static int devlink_dpipe_value_put(struct sk_buff *skb,
1902 struct devlink_dpipe_value *value)
1903{
1904 if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE,
1905 value->value_size, value->value))
1906 return -EMSGSIZE;
1907 if (value->mask)
1908 if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE_MASK,
1909 value->value_size, value->mask))
1910 return -EMSGSIZE;
1911 if (value->mapping_valid)
1912 if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_VALUE_MAPPING,
1913 value->mapping_value))
1914 return -EMSGSIZE;
1915 return 0;
1916}
1917
1918static int devlink_dpipe_action_value_put(struct sk_buff *skb,
1919 struct devlink_dpipe_value *value)
1920{
1921 if (!value->action)
1922 return -EINVAL;
1923 if (devlink_dpipe_action_put(skb, value->action))
1924 return -EMSGSIZE;
1925 if (devlink_dpipe_value_put(skb, value))
1926 return -EMSGSIZE;
1927 return 0;
1928}
1929
1930static int devlink_dpipe_action_values_put(struct sk_buff *skb,
1931 struct devlink_dpipe_value *values,
1932 unsigned int values_count)
1933{
1934 struct nlattr *action_attr;
1935 int i;
1936 int err;
1937
1938 for (i = 0; i < values_count; i++) {
1939 action_attr = nla_nest_start(skb,
1940 DEVLINK_ATTR_DPIPE_ACTION_VALUE);
1941 if (!action_attr)
1942 return -EMSGSIZE;
1943 err = devlink_dpipe_action_value_put(skb, &values[i]);
1944 if (err)
1945 goto err_action_value_put;
1946 nla_nest_end(skb, action_attr);
1947 }
1948 return 0;
1949
1950err_action_value_put:
1951 nla_nest_cancel(skb, action_attr);
1952 return err;
1953}
1954
1955static int devlink_dpipe_match_value_put(struct sk_buff *skb,
1956 struct devlink_dpipe_value *value)
1957{
1958 if (!value->match)
1959 return -EINVAL;
1960 if (devlink_dpipe_match_put(skb, value->match))
1961 return -EMSGSIZE;
1962 if (devlink_dpipe_value_put(skb, value))
1963 return -EMSGSIZE;
1964 return 0;
1965}
1966
1967static int devlink_dpipe_match_values_put(struct sk_buff *skb,
1968 struct devlink_dpipe_value *values,
1969 unsigned int values_count)
1970{
1971 struct nlattr *match_attr;
1972 int i;
1973 int err;
1974
1975 for (i = 0; i < values_count; i++) {
1976 match_attr = nla_nest_start(skb,
1977 DEVLINK_ATTR_DPIPE_MATCH_VALUE);
1978 if (!match_attr)
1979 return -EMSGSIZE;
1980 err = devlink_dpipe_match_value_put(skb, &values[i]);
1981 if (err)
1982 goto err_match_value_put;
1983 nla_nest_end(skb, match_attr);
1984 }
1985 return 0;
1986
1987err_match_value_put:
1988 nla_nest_cancel(skb, match_attr);
1989 return err;
1990}
1991
1992static int devlink_dpipe_entry_put(struct sk_buff *skb,
1993 struct devlink_dpipe_entry *entry)
1994{
1995 struct nlattr *entry_attr, *matches_attr, *actions_attr;
1996 int err;
1997
1998 entry_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_ENTRY);
1999 if (!entry_attr)
2000 return -EMSGSIZE;
2001
2002 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_INDEX, entry->index,
2003 DEVLINK_ATTR_PAD))
2004 goto nla_put_failure;
2005 if (entry->counter_valid)
2006 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_COUNTER,
2007 entry->counter, DEVLINK_ATTR_PAD))
2008 goto nla_put_failure;
2009
2010 matches_attr = nla_nest_start(skb,
2011 DEVLINK_ATTR_DPIPE_ENTRY_MATCH_VALUES);
2012 if (!matches_attr)
2013 goto nla_put_failure;
2014
2015 err = devlink_dpipe_match_values_put(skb, entry->match_values,
2016 entry->match_values_count);
2017 if (err) {
2018 nla_nest_cancel(skb, matches_attr);
2019 goto err_match_values_put;
2020 }
2021 nla_nest_end(skb, matches_attr);
2022
2023 actions_attr = nla_nest_start(skb,
2024 DEVLINK_ATTR_DPIPE_ENTRY_ACTION_VALUES);
2025 if (!actions_attr)
2026 goto nla_put_failure;
2027
2028 err = devlink_dpipe_action_values_put(skb, entry->action_values,
2029 entry->action_values_count);
2030 if (err) {
2031 nla_nest_cancel(skb, actions_attr);
2032 goto err_action_values_put;
2033 }
2034 nla_nest_end(skb, actions_attr);
59bfde01 2035
1555d204 2036 nla_nest_end(skb, entry_attr);
59bfde01 2037 return 0;
1555d204
AS		 2038
2039nla_put_failure:
2040 err = -EMSGSIZE;
2041err_match_values_put:
2042err_action_values_put:
2043 nla_nest_cancel(skb, entry_attr);
2044 return err;
2045}
2046
2047static struct devlink_dpipe_table *
2048devlink_dpipe_table_find(struct list_head *dpipe_tables,
2049 const char *table_name)
2050{
2051 struct devlink_dpipe_table *table;
2052
2053 list_for_each_entry_rcu(table, dpipe_tables, list) {
2054 if (!strcmp(table->name, table_name))
2055 return table;
2056 }
2057 return NULL;
2058}
2059
2060int devlink_dpipe_entry_ctx_prepare(struct devlink_dpipe_dump_ctx *dump_ctx)
2061{
2062 struct devlink *devlink;
2063 int err;
2064
2065 err = devlink_dpipe_send_and_alloc_skb(&dump_ctx->skb,
2066 dump_ctx->info);
2067 if (err)
2068 return err;
2069
2070 dump_ctx->hdr = genlmsg_put(dump_ctx->skb,
2071 dump_ctx->info->snd_portid,
2072 dump_ctx->info->snd_seq,
2073 &devlink_nl_family, NLM_F_MULTI,
2074 dump_ctx->cmd);
2075 if (!dump_ctx->hdr)
2076 goto nla_put_failure;
2077
2078 devlink = dump_ctx->info->user_ptr[0];
2079 if (devlink_nl_put_handle(dump_ctx->skb, devlink))
2080 goto nla_put_failure;
2081 dump_ctx->nest = nla_nest_start(dump_ctx->skb,
2082 DEVLINK_ATTR_DPIPE_ENTRIES);
2083 if (!dump_ctx->nest)
2084 goto nla_put_failure;
2085 return 0;
2086
2087nla_put_failure:
1555d204
AS		 2088 nlmsg_free(dump_ctx->skb);
2089 return -EMSGSIZE;
2090}
2091EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_prepare);
2092
2093int devlink_dpipe_entry_ctx_append(struct devlink_dpipe_dump_ctx *dump_ctx,
2094 struct devlink_dpipe_entry *entry)
2095{
2096 return devlink_dpipe_entry_put(dump_ctx->skb, entry);
2097}
2098EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_append);
2099
2100int devlink_dpipe_entry_ctx_close(struct devlink_dpipe_dump_ctx *dump_ctx)
2101{
2102 nla_nest_end(dump_ctx->skb, dump_ctx->nest);
2103 genlmsg_end(dump_ctx->skb, dump_ctx->hdr);
2104 return 0;
2105}
2106EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_close);
2107
35807324
AS		 2108void devlink_dpipe_entry_clear(struct devlink_dpipe_entry *entry)
2109
2110{
2111 unsigned int value_count, value_index;
2112 struct devlink_dpipe_value *value;
2113
2114 value = entry->action_values;
2115 value_count = entry->action_values_count;
2116 for (value_index = 0; value_index < value_count; value_index++) {
2117 kfree(value[value_index].value);
2118 kfree(value[value_index].mask);
2119 }
2120
2121 value = entry->match_values;
2122 value_count = entry->match_values_count;
2123 for (value_index = 0; value_index < value_count; value_index++) {
2124 kfree(value[value_index].value);
2125 kfree(value[value_index].mask);
2126 }
2127}
2128EXPORT_SYMBOL(devlink_dpipe_entry_clear);
2129
1555d204
AS		 2130static int devlink_dpipe_entries_fill(struct genl_info *info,
2131 enum devlink_command cmd, int flags,
2132 struct devlink_dpipe_table *table)
2133{
2134 struct devlink_dpipe_dump_ctx dump_ctx;
2135 struct nlmsghdr *nlh;
2136 int err;
2137
2138 dump_ctx.skb = NULL;
2139 dump_ctx.cmd = cmd;
2140 dump_ctx.info = info;
2141
2142 err = table->table_ops->entries_dump(table->priv,
2143 table->counters_enabled,
2144 &dump_ctx);
2145 if (err)
7fe4d6dc 2146 return err;
1555d204
AS		 2147
2148send_done:
2149 nlh = nlmsg_put(dump_ctx.skb, info->snd_portid, info->snd_seq,
2150 NLMSG_DONE, 0, flags | NLM_F_MULTI);
2151 if (!nlh) {
2152 err = devlink_dpipe_send_and_alloc_skb(&dump_ctx.skb, info);
2153 if (err)
7fe4d6dc 2154 return err;
1555d204
AS		 2155 goto send_done;
2156 }
2157 return genlmsg_reply(dump_ctx.skb, info);
1555d204
AS		 2158}
2159
2160static int devlink_nl_cmd_dpipe_entries_get(struct sk_buff *skb,
2161 struct genl_info *info)
2162{
2163 struct devlink *devlink = info->user_ptr[0];
2164 struct devlink_dpipe_table *table;
2165 const char *table_name;
2166
2167 if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
2168 return -EINVAL;
2169
2170 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
2171 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2172 table_name);
2173 if (!table)
2174 return -EINVAL;
2175
2176 if (!table->table_ops->entries_dump)
2177 return -EINVAL;
2178
2179 return devlink_dpipe_entries_fill(info, DEVLINK_CMD_DPIPE_ENTRIES_GET,
2180 0, table);
2181}
2182
2183static int devlink_dpipe_fields_put(struct sk_buff *skb,
2184 const struct devlink_dpipe_header *header)
2185{
2186 struct devlink_dpipe_field *field;
2187 struct nlattr *field_attr;
2188 int i;
2189
2190 for (i = 0; i < header->fields_count; i++) {
2191 field = &header->fields[i];
2192 field_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_FIELD);
2193 if (!field_attr)
2194 return -EMSGSIZE;
2195 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_FIELD_NAME, field->name) ||
2196 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
2197 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_BITWIDTH, field->bitwidth) ||
2198 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_MAPPING_TYPE, field->mapping_type))
2199 goto nla_put_failure;
2200 nla_nest_end(skb, field_attr);
2201 }
2202 return 0;
2203
2204nla_put_failure:
2205 nla_nest_cancel(skb, field_attr);
2206 return -EMSGSIZE;
2207}
2208
2209static int devlink_dpipe_header_put(struct sk_buff *skb,
2210 struct devlink_dpipe_header *header)
2211{
2212 struct nlattr *fields_attr, *header_attr;
2213 int err;
2214
2215 header_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_HEADER);
cb6bf9cf 2216 if (!header_attr)
1555d204
AS		 2217 return -EMSGSIZE;
2218
2219 if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_HEADER_NAME, header->name) ||
2220 nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
2221 nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
2222 goto nla_put_failure;
2223
2224 fields_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_HEADER_FIELDS);
2225 if (!fields_attr)
2226 goto nla_put_failure;
2227
2228 err = devlink_dpipe_fields_put(skb, header);
2229 if (err) {
2230 nla_nest_cancel(skb, fields_attr);
2231 goto nla_put_failure;
2232 }
2233 nla_nest_end(skb, fields_attr);
2234 nla_nest_end(skb, header_attr);
2235 return 0;
2236
2237nla_put_failure:
2238 err = -EMSGSIZE;
2239 nla_nest_cancel(skb, header_attr);
2240 return err;
2241}
2242
2243static int devlink_dpipe_headers_fill(struct genl_info *info,
2244 enum devlink_command cmd, int flags,
2245 struct devlink_dpipe_headers *
2246 dpipe_headers)
2247{
2248 struct devlink *devlink = info->user_ptr[0];
2249 struct nlattr *headers_attr;
2250 struct sk_buff *skb = NULL;
2251 struct nlmsghdr *nlh;
2252 void *hdr;
2253 int i, j;
2254 int err;
2255
2256 i = 0;
2257start_again:
2258 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2259 if (err)
2260 return err;
2261
2262 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
2263 &devlink_nl_family, NLM_F_MULTI, cmd);
6044bd4a
HY		 2264 if (!hdr) {
2265 nlmsg_free(skb);
1555d204 2266 return -EMSGSIZE;
6044bd4a 2267 }
1555d204
AS		 2268
2269 if (devlink_nl_put_handle(skb, devlink))
2270 goto nla_put_failure;
2271 headers_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_HEADERS);
2272 if (!headers_attr)
2273 goto nla_put_failure;
2274
2275 j = 0;
2276 for (; i < dpipe_headers->headers_count; i++) {
2277 err = devlink_dpipe_header_put(skb, dpipe_headers->headers[i]);
2278 if (err) {
2279 if (!j)
2280 goto err_table_put;
2281 break;
2282 }
2283 j++;
2284 }
2285 nla_nest_end(skb, headers_attr);
2286 genlmsg_end(skb, hdr);
2287 if (i != dpipe_headers->headers_count)
2288 goto start_again;
2289
2290send_done:
2291 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
2292 NLMSG_DONE, 0, flags | NLM_F_MULTI);
2293 if (!nlh) {
2294 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2295 if (err)
7fe4d6dc 2296 return err;
1555d204
AS		 2297 goto send_done;
2298 }
2299 return genlmsg_reply(skb, info);
2300
2301nla_put_failure:
2302 err = -EMSGSIZE;
2303err_table_put:
1555d204
AS		 2304 nlmsg_free(skb);
2305 return err;
2306}
2307
2308static int devlink_nl_cmd_dpipe_headers_get(struct sk_buff *skb,
2309 struct genl_info *info)
2310{
2311 struct devlink *devlink = info->user_ptr[0];
2312
2313 if (!devlink->dpipe_headers)
2314 return -EOPNOTSUPP;
2315 return devlink_dpipe_headers_fill(info, DEVLINK_CMD_DPIPE_HEADERS_GET,
2316 0, devlink->dpipe_headers);
2317}
2318
2319static int devlink_dpipe_table_counters_set(struct devlink *devlink,
2320 const char *table_name,
2321 bool enable)
2322{
2323 struct devlink_dpipe_table *table;
2324
2325 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
2326 table_name);
2327 if (!table)
2328 return -EINVAL;
2329
2330 if (table->counter_control_extern)
2331 return -EOPNOTSUPP;
2332
2333 if (!(table->counters_enabled ^ enable))
2334 return 0;
2335
2336 table->counters_enabled = enable;
2337 if (table->table_ops->counters_set_update)
2338 table->table_ops->counters_set_update(table->priv, enable);
2339 return 0;
2340}
2341
2342static int devlink_nl_cmd_dpipe_table_counters_set(struct sk_buff *skb,
2343 struct genl_info *info)
2344{
2345 struct devlink *devlink = info->user_ptr[0];
2346 const char *table_name;
2347 bool counters_enable;
2348
2349 if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME] ||
2350 !info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED])
2351 return -EINVAL;
2352
2353 table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
2354 counters_enable = !!nla_get_u8(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED]);
2355
2356 return devlink_dpipe_table_counters_set(devlink, table_name,
2357 counters_enable);
08f4b591
OG		 2358}
2359
43dd7512 2360static struct devlink_resource *
d9f9b9a4
AS		 2361devlink_resource_find(struct devlink *devlink,
2362 struct devlink_resource *resource, u64 resource_id)
2363{
2364 struct list_head *resource_list;
2365
2366 if (resource)
2367 resource_list = &resource->resource_list;
2368 else
2369 resource_list = &devlink->resource_list;
2370
2371 list_for_each_entry(resource, resource_list, list) {
2372 struct devlink_resource *child_resource;
2373
2374 if (resource->id == resource_id)
2375 return resource;
2376
2377 child_resource = devlink_resource_find(devlink, resource,
2378 resource_id);
2379 if (child_resource)
2380 return child_resource;
2381 }
2382 return NULL;
2383}
2384
43dd7512
WY		 2385static void
2386devlink_resource_validate_children(struct devlink_resource *resource)
d9f9b9a4
AS		 2387{
2388 struct devlink_resource *child_resource;
2389 bool size_valid = true;
2390 u64 parts_size = 0;
2391
2392 if (list_empty(&resource->resource_list))
2393 goto out;
2394
2395 list_for_each_entry(child_resource, &resource->resource_list, list)
2396 parts_size += child_resource->size_new;
2397
b9d17175 2398 if (parts_size > resource->size_new)
d9f9b9a4
AS		 2399 size_valid = false;
2400out:
2401 resource->size_valid = size_valid;
2402}
2403
cc944ead
AS		 2404static int
2405devlink_resource_validate_size(struct devlink_resource *resource, u64 size,
2406 struct netlink_ext_ack *extack)
2407{
2408 u64 reminder;
2409 int err = 0;
2410
0f3e9c97 2411 if (size > resource->size_params.size_max) {
cc944ead
AS		 2412 NL_SET_ERR_MSG_MOD(extack, "Size larger than maximum");
2413 err = -EINVAL;
2414 }
2415
0f3e9c97 2416 if (size < resource->size_params.size_min) {
cc944ead
AS		 2417 NL_SET_ERR_MSG_MOD(extack, "Size smaller than minimum");
2418 err = -EINVAL;
2419 }
2420
0f3e9c97 2421 div64_u64_rem(size, resource->size_params.size_granularity, &reminder);
cc944ead
AS		 2422 if (reminder) {
2423 NL_SET_ERR_MSG_MOD(extack, "Wrong granularity");
2424 err = -EINVAL;
2425 }
2426
2427 return err;
2428}
2429
d9f9b9a4
AS		 2430static int devlink_nl_cmd_resource_set(struct sk_buff *skb,
2431 struct genl_info *info)
2432{
2433 struct devlink *devlink = info->user_ptr[0];
2434 struct devlink_resource *resource;
2435 u64 resource_id;
2436 u64 size;
2437 int err;
2438
2439 if (!info->attrs[DEVLINK_ATTR_RESOURCE_ID] ||
2440 !info->attrs[DEVLINK_ATTR_RESOURCE_SIZE])
2441 return -EINVAL;
2442 resource_id = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_ID]);
2443
2444 resource = devlink_resource_find(devlink, NULL, resource_id);
2445 if (!resource)
2446 return -EINVAL;
2447
d9f9b9a4 2448 size = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_SIZE]);
cc944ead 2449 err = devlink_resource_validate_size(resource, size, info->extack);
d9f9b9a4
AS		 2450 if (err)
2451 return err;
2452
2453 resource->size_new = size;
2454 devlink_resource_validate_children(resource);
2455 if (resource->parent)
2456 devlink_resource_validate_children(resource->parent);
2457 return 0;
2458}
2459
3d18e4f1 2460static int
d9f9b9a4
AS		 2461devlink_resource_size_params_put(struct devlink_resource *resource,
2462 struct sk_buff *skb)
2463{
2464 struct devlink_resource_size_params *size_params;
2465
77d27096 2466 size_params = &resource->size_params;
3d18e4f1
AS		 2467 if (nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_GRAN,
2468 size_params->size_granularity, DEVLINK_ATTR_PAD) ||
2469 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MAX,
2470 size_params->size_max, DEVLINK_ATTR_PAD) ||
2471 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MIN,
2472 size_params->size_min, DEVLINK_ATTR_PAD) ||
2473 nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_UNIT, size_params->unit))
2474 return -EMSGSIZE;
2475 return 0;
d9f9b9a4
AS		 2476}
2477
fc56be47
JP		 2478static int devlink_resource_occ_put(struct devlink_resource *resource,
2479 struct sk_buff *skb)
2480{
2481 if (!resource->occ_get)
2482 return 0;
2483 return nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_OCC,
2484 resource->occ_get(resource->occ_get_priv),
2485 DEVLINK_ATTR_PAD);
2486}
2487
d9f9b9a4
AS		 2488static int devlink_resource_put(struct devlink *devlink, struct sk_buff *skb,
2489 struct devlink_resource *resource)
2490{
2491 struct devlink_resource *child_resource;
2492 struct nlattr *child_resource_attr;
2493 struct nlattr *resource_attr;
2494
2495 resource_attr = nla_nest_start(skb, DEVLINK_ATTR_RESOURCE);
2496 if (!resource_attr)
2497 return -EMSGSIZE;
2498
2499 if (nla_put_string(skb, DEVLINK_ATTR_RESOURCE_NAME, resource->name) ||
2500 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE, resource->size,
2501 DEVLINK_ATTR_PAD) ||
2502 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_ID, resource->id,
2503 DEVLINK_ATTR_PAD))
2504 goto nla_put_failure;
2505 if (resource->size != resource->size_new)
2506 nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_NEW,
2507 resource->size_new, DEVLINK_ATTR_PAD);
fc56be47
JP		 2508 if (devlink_resource_occ_put(resource, skb))
2509 goto nla_put_failure;
3d18e4f1
AS		 2510 if (devlink_resource_size_params_put(resource, skb))
2511 goto nla_put_failure;
d9f9b9a4
AS		 2512 if (list_empty(&resource->resource_list))
2513 goto out;
2514
2515 if (nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_SIZE_VALID,
2516 resource->size_valid))
2517 goto nla_put_failure;
2518
2519 child_resource_attr = nla_nest_start(skb, DEVLINK_ATTR_RESOURCE_LIST);
2520 if (!child_resource_attr)
2521 goto nla_put_failure;
2522
2523 list_for_each_entry(child_resource, &resource->resource_list, list) {
2524 if (devlink_resource_put(devlink, skb, child_resource))
2525 goto resource_put_failure;
2526 }
2527
2528 nla_nest_end(skb, child_resource_attr);
2529out:
2530 nla_nest_end(skb, resource_attr);
2531 return 0;
2532
2533resource_put_failure:
2534 nla_nest_cancel(skb, child_resource_attr);
2535nla_put_failure:
2536 nla_nest_cancel(skb, resource_attr);
2537 return -EMSGSIZE;
2538}
2539
2540static int devlink_resource_fill(struct genl_info *info,
2541 enum devlink_command cmd, int flags)
2542{
2543 struct devlink *devlink = info->user_ptr[0];
2544 struct devlink_resource *resource;
2545 struct nlattr *resources_attr;
2546 struct sk_buff *skb = NULL;
2547 struct nlmsghdr *nlh;
2548 bool incomplete;
2549 void *hdr;
2550 int i;
2551 int err;
2552
2553 resource = list_first_entry(&devlink->resource_list,
2554 struct devlink_resource, list);
2555start_again:
2556 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2557 if (err)
2558 return err;
2559
2560 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
2561 &devlink_nl_family, NLM_F_MULTI, cmd);
2562 if (!hdr) {
2563 nlmsg_free(skb);
2564 return -EMSGSIZE;
2565 }
2566
2567 if (devlink_nl_put_handle(skb, devlink))
2568 goto nla_put_failure;
2569
2570 resources_attr = nla_nest_start(skb, DEVLINK_ATTR_RESOURCE_LIST);
2571 if (!resources_attr)
2572 goto nla_put_failure;
2573
2574 incomplete = false;
2575 i = 0;
2576 list_for_each_entry_from(resource, &devlink->resource_list, list) {
2577 err = devlink_resource_put(devlink, skb, resource);
2578 if (err) {
2579 if (!i)
2580 goto err_resource_put;
2581 incomplete = true;
2582 break;
2583 }
2584 i++;
2585 }
2586 nla_nest_end(skb, resources_attr);
2587 genlmsg_end(skb, hdr);
2588 if (incomplete)
2589 goto start_again;
2590send_done:
2591 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
2592 NLMSG_DONE, 0, flags | NLM_F_MULTI);
2593 if (!nlh) {
2594 err = devlink_dpipe_send_and_alloc_skb(&skb, info);
2595 if (err)
83fe9a96 2596 return err;
d9f9b9a4
AS		 2597 goto send_done;
2598 }
2599 return genlmsg_reply(skb, info);
2600
2601nla_put_failure:
2602 err = -EMSGSIZE;
2603err_resource_put:
d9f9b9a4
AS		 2604 nlmsg_free(skb);
2605 return err;
2606}
2607
2608static int devlink_nl_cmd_resource_dump(struct sk_buff *skb,
2609 struct genl_info *info)
2610{
2611 struct devlink *devlink = info->user_ptr[0];
2612
2613 if (list_empty(&devlink->resource_list))
2614 return -EOPNOTSUPP;
2615
2616 return devlink_resource_fill(info, DEVLINK_CMD_RESOURCE_DUMP, 0);
2617}
2618
2d8dc5bb
AS		 2619static int
2620devlink_resources_validate(struct devlink *devlink,
2621 struct devlink_resource *resource,
2622 struct genl_info *info)
2623{
2624 struct list_head *resource_list;
2625 int err = 0;
2626
2627 if (resource)
2628 resource_list = &resource->resource_list;
2629 else
2630 resource_list = &devlink->resource_list;
2631
2632 list_for_each_entry(resource, resource_list, list) {
2633 if (!resource->size_valid)
2634 return -EINVAL;
2635 err = devlink_resources_validate(devlink, resource, info);
2636 if (err)
2637 return err;
2638 }
2639 return err;
2640}
2641
2642static int devlink_nl_cmd_reload(struct sk_buff *skb, struct genl_info *info)
2643{
2644 struct devlink *devlink = info->user_ptr[0];
2645 int err;
2646
2647 if (!devlink->ops->reload)
2648 return -EOPNOTSUPP;
2649
2650 err = devlink_resources_validate(devlink, NULL, info);
2651 if (err) {
2652 NL_SET_ERR_MSG_MOD(info->extack, "resources size validation failed");
2653 return err;
2654 }
ac0fc8a1 2655 return devlink->ops->reload(devlink, info->extack);
2d8dc5bb
AS		 2656}
2657
76726ccb
JK		 2658static int devlink_nl_cmd_flash_update(struct sk_buff *skb,
2659 struct genl_info *info)
2660{
2661 struct devlink *devlink = info->user_ptr[0];
2662 const char *file_name, *component;
2663 struct nlattr *nla_component;
2664
2665 if (!devlink->ops->flash_update)
2666 return -EOPNOTSUPP;
2667
2668 if (!info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME])
2669 return -EINVAL;
2670 file_name = nla_data(info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME]);
2671
2672 nla_component = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_COMPONENT];
2673 component = nla_component ? nla_data(nla_component) : NULL;
2674
2675 return devlink->ops->flash_update(devlink, file_name, component,
2676 info->extack);
2677}
2678
036467c3
MS		 2679static const struct devlink_param devlink_param_generic[] = {
2680 {
2681 .id = DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET,
2682 .name = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_NAME,
2683 .type = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_TYPE,
2684 },
2685 {
2686 .id = DEVLINK_PARAM_GENERIC_ID_MAX_MACS,
2687 .name = DEVLINK_PARAM_GENERIC_MAX_MACS_NAME,
2688 .type = DEVLINK_PARAM_GENERIC_MAX_MACS_TYPE,
2689 },
f567bcda
VV		 2690 {
2691 .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_SRIOV,
2692 .name = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_NAME,
2693 .type = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_TYPE,
2694 },
f6a69885
AV		 2695 {
2696 .id = DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT,
2697 .name = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_NAME,
2698 .type = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_TYPE,
2699 },
e3b51061
VV		 2700 {
2701 .id = DEVLINK_PARAM_GENERIC_ID_IGNORE_ARI,
2702 .name = DEVLINK_PARAM_GENERIC_IGNORE_ARI_NAME,
2703 .type = DEVLINK_PARAM_GENERIC_IGNORE_ARI_TYPE,
2704 },
f61cba42
VV		 2705 {
2706 .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX,
2707 .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_NAME,
2708 .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_TYPE,
2709 },
16511789
VV		 2710 {
2711 .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN,
2712 .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_NAME,
2713 .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_TYPE,
2714 },
846e980a
ST		 2715 {
2716 .id = DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY,
2717 .name = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_NAME,
2718 .type = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_TYPE,
2719 },
036467c3 2720};
eabaef18
MS		 2721
2722static int devlink_param_generic_verify(const struct devlink_param *param)
2723{
2724 /* verify it match generic parameter by id and name */
2725 if (param->id > DEVLINK_PARAM_GENERIC_ID_MAX)
2726 return -EINVAL;
2727 if (strcmp(param->name, devlink_param_generic[param->id].name))
2728 return -ENOENT;
2729
2730 WARN_ON(param->type != devlink_param_generic[param->id].type);
2731
2732 return 0;
2733}
2734
2735static int devlink_param_driver_verify(const struct devlink_param *param)
2736{
2737 int i;
2738
2739 if (param->id <= DEVLINK_PARAM_GENERIC_ID_MAX)
2740 return -EINVAL;
2741 /* verify no such name in generic params */
2742 for (i = 0; i <= DEVLINK_PARAM_GENERIC_ID_MAX; i++)
2743 if (!strcmp(param->name, devlink_param_generic[i].name))
2744 return -EEXIST;
2745
2746 return 0;
2747}
2748
2749static struct devlink_param_item *
2750devlink_param_find_by_name(struct list_head *param_list,
2751 const char *param_name)
2752{
2753 struct devlink_param_item *param_item;
2754
2755 list_for_each_entry(param_item, param_list, list)
2756 if (!strcmp(param_item->param->name, param_name))
2757 return param_item;
2758 return NULL;
2759}
2760
ec01aeb1
MS		 2761static struct devlink_param_item *
2762devlink_param_find_by_id(struct list_head *param_list, u32 param_id)
2763{
2764 struct devlink_param_item *param_item;
2765
2766 list_for_each_entry(param_item, param_list, list)
2767 if (param_item->param->id == param_id)
2768 return param_item;
2769 return NULL;
2770}
2771
45f05def
MS		 2772static bool
2773devlink_param_cmode_is_supported(const struct devlink_param *param,
2774 enum devlink_param_cmode cmode)
2775{
2776 return test_bit(cmode, &param->supported_cmodes);
2777}
2778
2779static int devlink_param_get(struct devlink *devlink,
2780 const struct devlink_param *param,
2781 struct devlink_param_gset_ctx *ctx)
2782{
2783 if (!param->get)
2784 return -EOPNOTSUPP;
2785 return param->get(devlink, param->id, ctx);
2786}
2787
e3b7ca18
MS		 2788static int devlink_param_set(struct devlink *devlink,
2789 const struct devlink_param *param,
2790 struct devlink_param_gset_ctx *ctx)
2791{
2792 if (!param->set)
2793 return -EOPNOTSUPP;
2794 return param->set(devlink, param->id, ctx);
2795}
2796
45f05def
MS		 2797static int
2798devlink_param_type_to_nla_type(enum devlink_param_type param_type)
2799{
2800 switch (param_type) {
2801 case DEVLINK_PARAM_TYPE_U8:
2802 return NLA_U8;
2803 case DEVLINK_PARAM_TYPE_U16:
2804 return NLA_U16;
2805 case DEVLINK_PARAM_TYPE_U32:
2806 return NLA_U32;
2807 case DEVLINK_PARAM_TYPE_STRING:
2808 return NLA_STRING;
2809 case DEVLINK_PARAM_TYPE_BOOL:
2810 return NLA_FLAG;
2811 default:
2812 return -EINVAL;
2813 }
2814}
2815
2816static int
2817devlink_nl_param_value_fill_one(struct sk_buff *msg,
2818 enum devlink_param_type type,
2819 enum devlink_param_cmode cmode,
2820 union devlink_param_value val)
2821{
2822 struct nlattr *param_value_attr;
2823
2824 param_value_attr = nla_nest_start(msg, DEVLINK_ATTR_PARAM_VALUE);
2825 if (!param_value_attr)
2826 goto nla_put_failure;
2827
2828 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_CMODE, cmode))
2829 goto value_nest_cancel;
2830
2831 switch (type) {
2832 case DEVLINK_PARAM_TYPE_U8:
2833 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu8))
2834 goto value_nest_cancel;
2835 break;
2836 case DEVLINK_PARAM_TYPE_U16:
2837 if (nla_put_u16(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu16))
2838 goto value_nest_cancel;
2839 break;
2840 case DEVLINK_PARAM_TYPE_U32:
2841 if (nla_put_u32(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu32))
2842 goto value_nest_cancel;
2843 break;
2844 case DEVLINK_PARAM_TYPE_STRING:
2845 if (nla_put_string(msg, DEVLINK_ATTR_PARAM_VALUE_DATA,
2846 val.vstr))
2847 goto value_nest_cancel;
2848 break;
2849 case DEVLINK_PARAM_TYPE_BOOL:
2850 if (val.vbool &&
2851 nla_put_flag(msg, DEVLINK_ATTR_PARAM_VALUE_DATA))
2852 goto value_nest_cancel;
2853 break;
2854 }
2855
2856 nla_nest_end(msg, param_value_attr);
2857 return 0;
2858
2859value_nest_cancel:
2860 nla_nest_cancel(msg, param_value_attr);
2861nla_put_failure:
2862 return -EMSGSIZE;
2863}
2864
2865static int devlink_nl_param_fill(struct sk_buff *msg, struct devlink *devlink,
f4601dee 2866 unsigned int port_index,
45f05def
MS		 2867 struct devlink_param_item *param_item,
2868 enum devlink_command cmd,
2869 u32 portid, u32 seq, int flags)
2870{
2871 union devlink_param_value param_value[DEVLINK_PARAM_CMODE_MAX + 1];
7c62cfb8 2872 bool param_value_set[DEVLINK_PARAM_CMODE_MAX + 1] = {};
45f05def
MS		 2873 const struct devlink_param *param = param_item->param;
2874 struct devlink_param_gset_ctx ctx;
2875 struct nlattr *param_values_list;
2876 struct nlattr *param_attr;
2877 int nla_type;
2878 void *hdr;
2879 int err;
2880 int i;
2881
2882 /* Get value from driver part to driverinit configuration mode */
2883 for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
2884 if (!devlink_param_cmode_is_supported(param, i))
2885 continue;
2886 if (i == DEVLINK_PARAM_CMODE_DRIVERINIT) {
2887 if (!param_item->driverinit_value_valid)
2888 return -EOPNOTSUPP;
2889 param_value[i] = param_item->driverinit_value;
2890 } else {
7c62cfb8
JP		 2891 if (!param_item->published)
2892 continue;
45f05def
MS		 2893 ctx.cmode = i;
2894 err = devlink_param_get(devlink, param, &ctx);
2895 if (err)
2896 return err;
2897 param_value[i] = ctx.val;
2898 }
7c62cfb8 2899 param_value_set[i] = true;
45f05def
MS		 2900 }
2901
2902 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
2903 if (!hdr)
2904 return -EMSGSIZE;
2905
2906 if (devlink_nl_put_handle(msg, devlink))
2907 goto genlmsg_cancel;
f4601dee 2908
c1e5786d
VV		 2909 if (cmd == DEVLINK_CMD_PORT_PARAM_GET ||
2910 cmd == DEVLINK_CMD_PORT_PARAM_NEW ||
2911 cmd == DEVLINK_CMD_PORT_PARAM_DEL)
f4601dee
VV		 2912 if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, port_index))
2913 goto genlmsg_cancel;
2914
45f05def
MS		 2915 param_attr = nla_nest_start(msg, DEVLINK_ATTR_PARAM);
2916 if (!param_attr)
2917 goto genlmsg_cancel;
2918 if (nla_put_string(msg, DEVLINK_ATTR_PARAM_NAME, param->name))
2919 goto param_nest_cancel;
2920 if (param->generic && nla_put_flag(msg, DEVLINK_ATTR_PARAM_GENERIC))
2921 goto param_nest_cancel;
2922
2923 nla_type = devlink_param_type_to_nla_type(param->type);
2924 if (nla_type < 0)
2925 goto param_nest_cancel;
2926 if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_TYPE, nla_type))
2927 goto param_nest_cancel;
2928
2929 param_values_list = nla_nest_start(msg, DEVLINK_ATTR_PARAM_VALUES_LIST);
2930 if (!param_values_list)
2931 goto param_nest_cancel;
2932
2933 for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
7c62cfb8 2934 if (!param_value_set[i])
45f05def
MS		 2935 continue;
2936 err = devlink_nl_param_value_fill_one(msg, param->type,
2937 i, param_value[i]);
2938 if (err)
2939 goto values_list_nest_cancel;
2940 }
2941
2942 nla_nest_end(msg, param_values_list);
2943 nla_nest_end(msg, param_attr);
2944 genlmsg_end(msg, hdr);
2945 return 0;
2946
2947values_list_nest_cancel:
2948 nla_nest_end(msg, param_values_list);
2949param_nest_cancel:
2950 nla_nest_cancel(msg, param_attr);
2951genlmsg_cancel:
2952 genlmsg_cancel(msg, hdr);
2953 return -EMSGSIZE;
2954}
2955
ea601e17 2956static void devlink_param_notify(struct devlink *devlink,
c1e5786d 2957 unsigned int port_index,
ea601e17
MS		 2958 struct devlink_param_item *param_item,
2959 enum devlink_command cmd)
2960{
2961 struct sk_buff *msg;
2962 int err;
2963
c1e5786d
VV		 2964 WARN_ON(cmd != DEVLINK_CMD_PARAM_NEW && cmd != DEVLINK_CMD_PARAM_DEL &&
2965 cmd != DEVLINK_CMD_PORT_PARAM_NEW &&
2966 cmd != DEVLINK_CMD_PORT_PARAM_DEL);
ea601e17
MS		 2967
2968 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2969 if (!msg)
2970 return;
c1e5786d
VV		 2971 err = devlink_nl_param_fill(msg, devlink, port_index, param_item, cmd,
2972 0, 0, 0);
ea601e17
MS		 2973 if (err) {
2974 nlmsg_free(msg);
2975 return;
2976 }
2977
2978 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
2979 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
2980}
2981
45f05def
MS		 2982static int devlink_nl_cmd_param_get_dumpit(struct sk_buff *msg,
2983 struct netlink_callback *cb)
2984{
2985 struct devlink_param_item *param_item;
2986 struct devlink *devlink;
2987 int start = cb->args[0];
2988 int idx = 0;
2989 int err;
2990
2991 mutex_lock(&devlink_mutex);
2992 list_for_each_entry(devlink, &devlink_list, list) {
2993 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
2994 continue;
2995 mutex_lock(&devlink->lock);
2996 list_for_each_entry(param_item, &devlink->param_list, list) {
2997 if (idx < start) {
2998 idx++;
2999 continue;
3000 }
f4601dee 3001 err = devlink_nl_param_fill(msg, devlink, 0, param_item,
45f05def
MS		 3002 DEVLINK_CMD_PARAM_GET,
3003 NETLINK_CB(cb->skb).portid,
3004 cb->nlh->nlmsg_seq,
3005 NLM_F_MULTI);
3006 if (err) {
3007 mutex_unlock(&devlink->lock);
3008 goto out;
3009 }
3010 idx++;
3011 }
3012 mutex_unlock(&devlink->lock);
3013 }
3014out:
3015 mutex_unlock(&devlink_mutex);
3016
3017 cb->args[0] = idx;
3018 return msg->len;
3019}
3020
e3b7ca18
MS		 3021static int
3022devlink_param_type_get_from_info(struct genl_info *info,
3023 enum devlink_param_type *param_type)
3024{
3025 if (!info->attrs[DEVLINK_ATTR_PARAM_TYPE])
3026 return -EINVAL;
3027
3028 switch (nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_TYPE])) {
3029 case NLA_U8:
3030 *param_type = DEVLINK_PARAM_TYPE_U8;
3031 break;
3032 case NLA_U16:
3033 *param_type = DEVLINK_PARAM_TYPE_U16;
3034 break;
3035 case NLA_U32:
3036 *param_type = DEVLINK_PARAM_TYPE_U32;
3037 break;
3038 case NLA_STRING:
3039 *param_type = DEVLINK_PARAM_TYPE_STRING;
3040 break;
3041 case NLA_FLAG:
3042 *param_type = DEVLINK_PARAM_TYPE_BOOL;
3043 break;
3044 default:
3045 return -EINVAL;
3046 }
3047
3048 return 0;
3049}
3050
3051static int
3052devlink_param_value_get_from_info(const struct devlink_param *param,
3053 struct genl_info *info,
3054 union devlink_param_value *value)
3055{
f355cfcd
MS		 3056 int len;
3057
e3b7ca18
MS		 3058 if (param->type != DEVLINK_PARAM_TYPE_BOOL &&
3059 !info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA])
3060 return -EINVAL;
3061
3062 switch (param->type) {
3063 case DEVLINK_PARAM_TYPE_U8:
3064 value->vu8 = nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]);
3065 break;
3066 case DEVLINK_PARAM_TYPE_U16:
3067 value->vu16 = nla_get_u16(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]);
3068 break;
3069 case DEVLINK_PARAM_TYPE_U32:
3070 value->vu32 = nla_get_u32(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]);
3071 break;
3072 case DEVLINK_PARAM_TYPE_STRING:
f355cfcd
MS		 3073 len = strnlen(nla_data(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]),
3074 nla_len(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]));
3075 if (len == nla_len(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]) ||
bde74ad1 3076 len >= __DEVLINK_PARAM_MAX_STRING_VALUE)
e3b7ca18 3077 return -EINVAL;
f355cfcd
MS		 3078 strcpy(value->vstr,
3079 nla_data(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]));
e3b7ca18
MS		 3080 break;
3081 case DEVLINK_PARAM_TYPE_BOOL:
3082 value->vbool = info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA] ?
3083 true : false;
3084 break;
3085 }
3086 return 0;
3087}
3088
45f05def 3089static struct devlink_param_item *
f4601dee 3090devlink_param_get_from_info(struct list_head *param_list,
45f05def
MS		 3091 struct genl_info *info)
3092{
3093 char *param_name;
3094
3095 if (!info->attrs[DEVLINK_ATTR_PARAM_NAME])
3096 return NULL;
3097
3098 param_name = nla_data(info->attrs[DEVLINK_ATTR_PARAM_NAME]);
f4601dee 3099 return devlink_param_find_by_name(param_list, param_name);
45f05def
MS		 3100}
3101
3102static int devlink_nl_cmd_param_get_doit(struct sk_buff *skb,
3103 struct genl_info *info)
3104{
3105 struct devlink *devlink = info->user_ptr[0];
3106 struct devlink_param_item *param_item;
3107 struct sk_buff *msg;
3108 int err;
3109
f4601dee 3110 param_item = devlink_param_get_from_info(&devlink->param_list, info);
45f05def
MS		 3111 if (!param_item)
3112 return -EINVAL;
3113
3114 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3115 if (!msg)
3116 return -ENOMEM;
3117
f4601dee 3118 err = devlink_nl_param_fill(msg, devlink, 0, param_item,
45f05def
MS		 3119 DEVLINK_CMD_PARAM_GET,
3120 info->snd_portid, info->snd_seq, 0);
3121 if (err) {
3122 nlmsg_free(msg);
3123 return err;
3124 }
3125
3126 return genlmsg_reply(msg, info);
3127}
3128
9c54873b 3129static int __devlink_nl_cmd_param_set_doit(struct devlink *devlink,
c1e5786d 3130 unsigned int port_index,
9c54873b
VV		 3131 struct list_head *param_list,
3132 struct genl_info *info,
3133 enum devlink_command cmd)
e3b7ca18 3134{
e3b7ca18
MS		 3135 enum devlink_param_type param_type;
3136 struct devlink_param_gset_ctx ctx;
3137 enum devlink_param_cmode cmode;
3138 struct devlink_param_item *param_item;
3139 const struct devlink_param *param;
3140 union devlink_param_value value;
3141 int err = 0;
3142
9c54873b 3143 param_item = devlink_param_get_from_info(param_list, info);
e3b7ca18
MS		 3144 if (!param_item)
3145 return -EINVAL;
3146 param = param_item->param;
3147 err = devlink_param_type_get_from_info(info, &param_type);
3148 if (err)
3149 return err;
3150 if (param_type != param->type)
3151 return -EINVAL;
3152 err = devlink_param_value_get_from_info(param, info, &value);
3153 if (err)
3154 return err;
3155 if (param->validate) {
3156 err = param->validate(devlink, param->id, value, info->extack);
3157 if (err)
3158 return err;
3159 }
3160
3161 if (!info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE])
3162 return -EINVAL;
3163 cmode = nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE]);
3164 if (!devlink_param_cmode_is_supported(param, cmode))
3165 return -EOPNOTSUPP;
3166
3167 if (cmode == DEVLINK_PARAM_CMODE_DRIVERINIT) {
1276534c
MS		 3168 if (param->type == DEVLINK_PARAM_TYPE_STRING)
3169 strcpy(param_item->driverinit_value.vstr, value.vstr);
3170 else
3171 param_item->driverinit_value = value;
e3b7ca18
MS		 3172 param_item->driverinit_value_valid = true;
3173 } else {
3174 if (!param->set)
3175 return -EOPNOTSUPP;
3176 ctx.val = value;
3177 ctx.cmode = cmode;
3178 err = devlink_param_set(devlink, param, &ctx);
3179 if (err)
3180 return err;
3181 }
3182
c1e5786d 3183 devlink_param_notify(devlink, port_index, param_item, cmd);
e3b7ca18
MS		 3184 return 0;
3185}
3186
9c54873b
VV		 3187static int devlink_nl_cmd_param_set_doit(struct sk_buff *skb,
3188 struct genl_info *info)
3189{
3190 struct devlink *devlink = info->user_ptr[0];
3191
c1e5786d 3192 return __devlink_nl_cmd_param_set_doit(devlink, 0, &devlink->param_list,
9c54873b
VV		 3193 info, DEVLINK_CMD_PARAM_NEW);
3194}
3195
eabaef18 3196static int devlink_param_register_one(struct devlink *devlink,
c1e5786d 3197 unsigned int port_index,
39e6160e 3198 struct list_head *param_list,
c1e5786d
VV		 3199 const struct devlink_param *param,
3200 enum devlink_command cmd)
eabaef18
MS		 3201{
3202 struct devlink_param_item *param_item;
3203
39e6160e 3204 if (devlink_param_find_by_name(param_list, param->name))
eabaef18
MS		 3205 return -EEXIST;
3206
3207 if (param->supported_cmodes == BIT(DEVLINK_PARAM_CMODE_DRIVERINIT))
3208 WARN_ON(param->get || param->set);
3209 else
3210 WARN_ON(!param->get || !param->set);
3211
3212 param_item = kzalloc(sizeof(*param_item), GFP_KERNEL);
3213 if (!param_item)
3214 return -ENOMEM;
3215 param_item->param = param;
3216
39e6160e 3217 list_add_tail(&param_item->list, param_list);
c1e5786d 3218 devlink_param_notify(devlink, port_index, param_item, cmd);
eabaef18
MS		 3219 return 0;
3220}
3221
3222static void devlink_param_unregister_one(struct devlink *devlink,
c1e5786d 3223 unsigned int port_index,
39e6160e 3224 struct list_head *param_list,
c1e5786d
VV		 3225 const struct devlink_param *param,
3226 enum devlink_command cmd)
eabaef18
MS		 3227{
3228 struct devlink_param_item *param_item;
3229
39e6160e 3230 param_item = devlink_param_find_by_name(param_list, param->name);
eabaef18 3231 WARN_ON(!param_item);
c1e5786d 3232 devlink_param_notify(devlink, port_index, param_item, cmd);
eabaef18
MS		 3233 list_del(&param_item->list);
3234 kfree(param_item);
3235}
3236
f4601dee
VV		 3237static int devlink_nl_cmd_port_param_get_dumpit(struct sk_buff *msg,
3238 struct netlink_callback *cb)
3239{
3240 struct devlink_param_item *param_item;
3241 struct devlink_port *devlink_port;
3242 struct devlink *devlink;
3243 int start = cb->args[0];
3244 int idx = 0;
3245 int err;
3246
3247 mutex_lock(&devlink_mutex);
3248 list_for_each_entry(devlink, &devlink_list, list) {
3249 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
3250 continue;
3251 mutex_lock(&devlink->lock);
3252 list_for_each_entry(devlink_port, &devlink->port_list, list) {
3253 list_for_each_entry(param_item,
3254 &devlink_port->param_list, list) {
3255 if (idx < start) {
3256 idx++;
3257 continue;
3258 }
3259 err = devlink_nl_param_fill(msg,
3260 devlink_port->devlink,
3261 devlink_port->index, param_item,
3262 DEVLINK_CMD_PORT_PARAM_GET,
3263 NETLINK_CB(cb->skb).portid,
3264 cb->nlh->nlmsg_seq,
3265 NLM_F_MULTI);
3266 if (err) {
3267 mutex_unlock(&devlink->lock);
3268 goto out;
3269 }
3270 idx++;
3271 }
3272 }
3273 mutex_unlock(&devlink->lock);
3274 }
3275out:
3276 mutex_unlock(&devlink_mutex);
3277
3278 cb->args[0] = idx;
3279 return msg->len;
3280}
3281
3282static int devlink_nl_cmd_port_param_get_doit(struct sk_buff *skb,
3283 struct genl_info *info)
3284{
3285 struct devlink_port *devlink_port = info->user_ptr[0];
3286 struct devlink_param_item *param_item;
3287 struct sk_buff *msg;
3288 int err;
3289
3290 param_item = devlink_param_get_from_info(&devlink_port->param_list,
3291 info);
3292 if (!param_item)
3293 return -EINVAL;
3294
3295 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3296 if (!msg)
3297 return -ENOMEM;
3298
3299 err = devlink_nl_param_fill(msg, devlink_port->devlink,
3300 devlink_port->index, param_item,
3301 DEVLINK_CMD_PORT_PARAM_GET,
3302 info->snd_portid, info->snd_seq, 0);
3303 if (err) {
3304 nlmsg_free(msg);
3305 return err;
3306 }
3307
3308 return genlmsg_reply(msg, info);
3309}
3310
9c54873b
VV		 3311static int devlink_nl_cmd_port_param_set_doit(struct sk_buff *skb,
3312 struct genl_info *info)
3313{
3314 struct devlink_port *devlink_port = info->user_ptr[0];
3315
3316 return __devlink_nl_cmd_param_set_doit(devlink_port->devlink,
c1e5786d
VV		 3317 devlink_port->index,
3318 &devlink_port->param_list, info,
3319 DEVLINK_CMD_PORT_PARAM_NEW);
9c54873b
VV		 3320}
3321
a006d467
AV		 3322static int devlink_nl_region_snapshot_id_put(struct sk_buff *msg,
3323 struct devlink *devlink,
3324 struct devlink_snapshot *snapshot)
3325{
3326 struct nlattr *snap_attr;
3327 int err;
3328
3329 snap_attr = nla_nest_start(msg, DEVLINK_ATTR_REGION_SNAPSHOT);
3330 if (!snap_attr)
3331 return -EINVAL;
3332
3333 err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID, snapshot->id);
3334 if (err)
3335 goto nla_put_failure;
3336
3337 nla_nest_end(msg, snap_attr);
3338 return 0;
3339
3340nla_put_failure:
3341 nla_nest_cancel(msg, snap_attr);
3342 return err;
3343}
3344
3345static int devlink_nl_region_snapshots_id_put(struct sk_buff *msg,
3346 struct devlink *devlink,
3347 struct devlink_region *region)
3348{
3349 struct devlink_snapshot *snapshot;
3350 struct nlattr *snapshots_attr;
3351 int err;
3352
3353 snapshots_attr = nla_nest_start(msg, DEVLINK_ATTR_REGION_SNAPSHOTS);
3354 if (!snapshots_attr)
3355 return -EINVAL;
3356
3357 list_for_each_entry(snapshot, &region->snapshot_list, list) {
3358 err = devlink_nl_region_snapshot_id_put(msg, devlink, snapshot);
3359 if (err)
3360 goto nla_put_failure;
3361 }
3362
3363 nla_nest_end(msg, snapshots_attr);
3364 return 0;
3365
3366nla_put_failure:
3367 nla_nest_cancel(msg, snapshots_attr);
3368 return err;
3369}
3370
d8db7ea5
AV		 3371static int devlink_nl_region_fill(struct sk_buff *msg, struct devlink *devlink,
3372 enum devlink_command cmd, u32 portid,
3373 u32 seq, int flags,
3374 struct devlink_region *region)
3375{
3376 void *hdr;
3377 int err;
3378
3379 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
3380 if (!hdr)
3381 return -EMSGSIZE;
3382
3383 err = devlink_nl_put_handle(msg, devlink);
3384 if (err)
3385 goto nla_put_failure;
3386
3387 err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME, region->name);
3388 if (err)
3389 goto nla_put_failure;
3390
3391 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
3392 region->size,
3393 DEVLINK_ATTR_PAD);
3394 if (err)
3395 goto nla_put_failure;
3396
a006d467
AV		 3397 err = devlink_nl_region_snapshots_id_put(msg, devlink, region);
3398 if (err)
3399 goto nla_put_failure;
3400
d8db7ea5
AV		 3401 genlmsg_end(msg, hdr);
3402 return 0;
3403
3404nla_put_failure:
3405 genlmsg_cancel(msg, hdr);
3406 return err;
3407}
3408
866319bb
AV		 3409static void devlink_nl_region_notify(struct devlink_region *region,
3410 struct devlink_snapshot *snapshot,
3411 enum devlink_command cmd)
3412{
3413 struct devlink *devlink = region->devlink;
3414 struct sk_buff *msg;
3415 void *hdr;
3416 int err;
3417
3418 WARN_ON(cmd != DEVLINK_CMD_REGION_NEW && cmd != DEVLINK_CMD_REGION_DEL);
3419
3420 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3421 if (!msg)
3422 return;
3423
3424 hdr = genlmsg_put(msg, 0, 0, &devlink_nl_family, 0, cmd);
3425 if (!hdr)
3426 goto out_free_msg;
3427
3428 err = devlink_nl_put_handle(msg, devlink);
3429 if (err)
3430 goto out_cancel_msg;
3431
3432 err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME,
3433 region->name);
3434 if (err)
3435 goto out_cancel_msg;
3436
3437 if (snapshot) {
3438 err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID,
3439 snapshot->id);
3440 if (err)
3441 goto out_cancel_msg;
3442 } else {
3443 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE,
3444 region->size, DEVLINK_ATTR_PAD);
3445 if (err)
3446 goto out_cancel_msg;
3447 }
3448 genlmsg_end(msg, hdr);
3449
3450 genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
3451 msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
3452
3453 return;
3454
3455out_cancel_msg:
3456 genlmsg_cancel(msg, hdr);
3457out_free_msg:
3458 nlmsg_free(msg);
3459}
3460
d8db7ea5
AV		 3461static int devlink_nl_cmd_region_get_doit(struct sk_buff *skb,
3462 struct genl_info *info)
3463{
3464 struct devlink *devlink = info->user_ptr[0];
3465 struct devlink_region *region;
3466 const char *region_name;
3467 struct sk_buff *msg;
3468 int err;
3469
3470 if (!info->attrs[DEVLINK_ATTR_REGION_NAME])
3471 return -EINVAL;
3472
3473 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
3474 region = devlink_region_get_by_name(devlink, region_name);
3475 if (!region)
3476 return -EINVAL;
3477
3478 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3479 if (!msg)
3480 return -ENOMEM;
3481
3482 err = devlink_nl_region_fill(msg, devlink, DEVLINK_CMD_REGION_GET,
3483 info->snd_portid, info->snd_seq, 0,
3484 region);
3485 if (err) {
3486 nlmsg_free(msg);
3487 return err;
3488 }
3489
3490 return genlmsg_reply(msg, info);
3491}
3492
3493static int devlink_nl_cmd_region_get_dumpit(struct sk_buff *msg,
3494 struct netlink_callback *cb)
3495{
3496 struct devlink_region *region;
3497 struct devlink *devlink;
3498 int start = cb->args[0];
3499 int idx = 0;
3500 int err;
3501
3502 mutex_lock(&devlink_mutex);
3503 list_for_each_entry(devlink, &devlink_list, list) {
3504 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
3505 continue;
3506
3507 mutex_lock(&devlink->lock);
3508 list_for_each_entry(region, &devlink->region_list, list) {
3509 if (idx < start) {
3510 idx++;
3511 continue;
3512 }
3513 err = devlink_nl_region_fill(msg, devlink,
3514 DEVLINK_CMD_REGION_GET,
3515 NETLINK_CB(cb->skb).portid,
3516 cb->nlh->nlmsg_seq,
3517 NLM_F_MULTI, region);
3518 if (err) {
3519 mutex_unlock(&devlink->lock);
3520 goto out;
3521 }
3522 idx++;
3523 }
3524 mutex_unlock(&devlink->lock);
3525 }
3526out:
3527 mutex_unlock(&devlink_mutex);
3528 cb->args[0] = idx;
3529 return msg->len;
3530}
3531
866319bb
AV		 3532static int devlink_nl_cmd_region_del(struct sk_buff *skb,
3533 struct genl_info *info)
3534{
3535 struct devlink *devlink = info->user_ptr[0];
3536 struct devlink_snapshot *snapshot;
3537 struct devlink_region *region;
3538 const char *region_name;
3539 u32 snapshot_id;
3540
3541 if (!info->attrs[DEVLINK_ATTR_REGION_NAME] ||
3542 !info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID])
3543 return -EINVAL;
3544
3545 region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
3546 snapshot_id = nla_get_u32(info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
3547
3548 region = devlink_region_get_by_name(devlink, region_name);
3549 if (!region)
3550 return -EINVAL;
3551
3552 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
3553 if (!snapshot)
3554 return -EINVAL;
3555
3556 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_DEL);
3557 devlink_region_snapshot_del(snapshot);
3558 return 0;
3559}
3560
4e54795a
AV		 3561static int devlink_nl_cmd_region_read_chunk_fill(struct sk_buff *msg,
3562 struct devlink *devlink,
3563 u8 *chunk, u32 chunk_size,
3564 u64 addr)
3565{
3566 struct nlattr *chunk_attr;
3567 int err;
3568
3569 chunk_attr = nla_nest_start(msg, DEVLINK_ATTR_REGION_CHUNK);
3570 if (!chunk_attr)
3571 return -EINVAL;
3572
3573 err = nla_put(msg, DEVLINK_ATTR_REGION_CHUNK_DATA, chunk_size, chunk);
3574 if (err)
3575 goto nla_put_failure;
3576
3577 err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_CHUNK_ADDR, addr,
3578 DEVLINK_ATTR_PAD);
3579 if (err)
3580 goto nla_put_failure;
3581
3582 nla_nest_end(msg, chunk_attr);
3583 return 0;
3584
3585nla_put_failure:
3586 nla_nest_cancel(msg, chunk_attr);
3587 return err;
3588}
3589
3590#define DEVLINK_REGION_READ_CHUNK_SIZE 256
3591
3592static int devlink_nl_region_read_snapshot_fill(struct sk_buff *skb,
3593 struct devlink *devlink,
3594 struct devlink_region *region,
3595 struct nlattr **attrs,
3596 u64 start_offset,
3597 u64 end_offset,
3598 bool dump,
3599 u64 *new_offset)
3600{
3601 struct devlink_snapshot *snapshot;
3602 u64 curr_offset = start_offset;
3603 u32 snapshot_id;
3604 int err = 0;
3605
3606 *new_offset = start_offset;
3607
3608 snapshot_id = nla_get_u32(attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
3609 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
3610 if (!snapshot)
3611 return -EINVAL;
3612
3613 if (end_offset > snapshot->data_len || dump)
3614 end_offset = snapshot->data_len;
3615
3616 while (curr_offset < end_offset) {
3617 u32 data_size;
3618 u8 *data;
3619
3620 if (end_offset - curr_offset < DEVLINK_REGION_READ_CHUNK_SIZE)
3621 data_size = end_offset - curr_offset;
3622 else
3623 data_size = DEVLINK_REGION_READ_CHUNK_SIZE;
3624
3625 data = &snapshot->data[curr_offset];
3626 err = devlink_nl_cmd_region_read_chunk_fill(skb, devlink,
3627 data, data_size,
3628 curr_offset);
3629 if (err)
3630 break;
3631
3632 curr_offset += data_size;
3633 }
3634 *new_offset = curr_offset;
3635
3636 return err;
3637}
3638
3639static int devlink_nl_cmd_region_read_dumpit(struct sk_buff *skb,
3640 struct netlink_callback *cb)
3641{
3642 u64 ret_offset, start_offset, end_offset = 0;
4e54795a
AV		 3643 const struct genl_ops *ops = cb->data;
3644 struct devlink_region *region;
3645 struct nlattr *chunks_attr;
3646 const char *region_name;
3647 struct devlink *devlink;
68750561 3648 struct nlattr **attrs;
4e54795a
AV		 3649 bool dump = true;
3650 void *hdr;
3651 int err;
3652
3653 start_offset = *((u64 *)&cb->args[0]);
3654
68750561
JK		 3655 attrs = kmalloc_array(DEVLINK_ATTR_MAX + 1, sizeof(*attrs), GFP_KERNEL);
3656 if (!attrs)
3657 return -ENOMEM;
3658
4e54795a 3659 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + devlink_nl_family.hdrsize,
dac9c979 3660 attrs, DEVLINK_ATTR_MAX, ops->policy, cb->extack);
4e54795a 3661 if (err)
68750561 3662 goto out_free;
4e54795a 3663
dac7c08f 3664 mutex_lock(&devlink_mutex);
4e54795a 3665 devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
fdd41ec2
PP		 3666 if (IS_ERR(devlink)) {
3667 err = PTR_ERR(devlink);
dac7c08f 3668 goto out_dev;
fdd41ec2 3669 }
4e54795a 3670
4e54795a
AV		 3671 mutex_lock(&devlink->lock);
3672
3673 if (!attrs[DEVLINK_ATTR_REGION_NAME] ||
fdd41ec2
PP		 3674 !attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]) {
3675 err = -EINVAL;
4e54795a 3676 goto out_unlock;
fdd41ec2 3677 }
4e54795a
AV		 3678
3679 region_name = nla_data(attrs[DEVLINK_ATTR_REGION_NAME]);
3680 region = devlink_region_get_by_name(devlink, region_name);
fdd41ec2
PP		 3681 if (!region) {
3682 err = -EINVAL;
4e54795a 3683 goto out_unlock;
fdd41ec2 3684 }
4e54795a
AV		 3685
3686 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
3687 &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI,
3688 DEVLINK_CMD_REGION_READ);
fdd41ec2
PP		 3689 if (!hdr) {
3690 err = -EMSGSIZE;
4e54795a 3691 goto out_unlock;
fdd41ec2 3692 }
4e54795a
AV		 3693
3694 err = devlink_nl_put_handle(skb, devlink);
3695 if (err)
3696 goto nla_put_failure;
3697
3698 err = nla_put_string(skb, DEVLINK_ATTR_REGION_NAME, region_name);
3699 if (err)
3700 goto nla_put_failure;
3701
3702 chunks_attr = nla_nest_start(skb, DEVLINK_ATTR_REGION_CHUNKS);
fdd41ec2
PP		 3703 if (!chunks_attr) {
3704 err = -EMSGSIZE;
4e54795a 3705 goto nla_put_failure;
fdd41ec2 3706 }
4e54795a
AV		 3707
3708 if (attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR] &&
3709 attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]) {
3710 if (!start_offset)
3711 start_offset =
3712 nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
3713
3714 end_offset = nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
3715 end_offset += nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]);
3716 dump = false;
3717 }
3718
3719 err = devlink_nl_region_read_snapshot_fill(skb, devlink,
3720 region, attrs,
3721 start_offset,
3722 end_offset, dump,
3723 &ret_offset);
3724
3725 if (err && err != -EMSGSIZE)
3726 goto nla_put_failure;
3727
3728 /* Check if there was any progress done to prevent infinite loop */
fdd41ec2
PP		 3729 if (ret_offset == start_offset) {
3730 err = -EINVAL;
4e54795a 3731 goto nla_put_failure;
fdd41ec2 3732 }
4e54795a
AV		 3733
3734 *((u64 *)&cb->args[0]) = ret_offset;
3735
3736 nla_nest_end(skb, chunks_attr);
3737 genlmsg_end(skb, hdr);
3738 mutex_unlock(&devlink->lock);
3739 mutex_unlock(&devlink_mutex);
68750561 3740 kfree(attrs);
4e54795a
AV		 3741
3742 return skb->len;
3743
3744nla_put_failure:
3745 genlmsg_cancel(skb, hdr);
3746out_unlock:
3747 mutex_unlock(&devlink->lock);
dac7c08f 3748out_dev:
4e54795a 3749 mutex_unlock(&devlink_mutex);
68750561
JK		 3750out_free:
3751 kfree(attrs);
fdd41ec2 3752 return err;
4e54795a
AV		 3753}
3754
f9cf2288
JK		 3755struct devlink_info_req {
3756 struct sk_buff *msg;
3757};
3758
3759int devlink_info_driver_name_put(struct devlink_info_req *req, const char *name)
3760{
3761 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_DRIVER_NAME, name);
3762}
3763EXPORT_SYMBOL_GPL(devlink_info_driver_name_put);
3764
3765int devlink_info_serial_number_put(struct devlink_info_req *req, const char *sn)
3766{
3767 return nla_put_string(req->msg, DEVLINK_ATTR_INFO_SERIAL_NUMBER, sn);
3768}
3769EXPORT_SYMBOL_GPL(devlink_info_serial_number_put);
3770
fc6fae7d
JK		 3771static int devlink_info_version_put(struct devlink_info_req *req, int attr,
3772 const char *version_name,
3773 const char *version_value)
3774{
3775 struct nlattr *nest;
3776 int err;
3777
3778 nest = nla_nest_start(req->msg, attr);
3779 if (!nest)
3780 return -EMSGSIZE;
3781
3782 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_NAME,
3783 version_name);
3784 if (err)
3785 goto nla_put_failure;
3786
3787 err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_VALUE,
3788 version_value);
3789 if (err)
3790 goto nla_put_failure;
3791
3792 nla_nest_end(req->msg, nest);
3793
3794 return 0;
3795
3796nla_put_failure:
3797 nla_nest_cancel(req->msg, nest);
3798 return err;
3799}
3800
3801int devlink_info_version_fixed_put(struct devlink_info_req *req,
3802 const char *version_name,
3803 const char *version_value)
3804{
3805 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_FIXED,
3806 version_name, version_value);
3807}
3808EXPORT_SYMBOL_GPL(devlink_info_version_fixed_put);
3809
3810int devlink_info_version_stored_put(struct devlink_info_req *req,
3811 const char *version_name,
3812 const char *version_value)
3813{
3814 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_STORED,
3815 version_name, version_value);
3816}
3817EXPORT_SYMBOL_GPL(devlink_info_version_stored_put);
3818
3819int devlink_info_version_running_put(struct devlink_info_req *req,
3820 const char *version_name,
3821 const char *version_value)
3822{
3823 return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_RUNNING,
3824 version_name, version_value);
3825}
3826EXPORT_SYMBOL_GPL(devlink_info_version_running_put);
3827
f9cf2288
JK		 3828static int
3829devlink_nl_info_fill(struct sk_buff *msg, struct devlink *devlink,
3830 enum devlink_command cmd, u32 portid,
3831 u32 seq, int flags, struct netlink_ext_ack *extack)
3832{
3833 struct devlink_info_req req;
3834 void *hdr;
3835 int err;
3836
3837 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
3838 if (!hdr)
3839 return -EMSGSIZE;
3840
3841 err = -EMSGSIZE;
3842 if (devlink_nl_put_handle(msg, devlink))
3843 goto err_cancel_msg;
3844
3845 req.msg = msg;
3846 err = devlink->ops->info_get(devlink, &req, extack);
3847 if (err)
3848 goto err_cancel_msg;
3849
3850 genlmsg_end(msg, hdr);
3851 return 0;
3852
3853err_cancel_msg:
3854 genlmsg_cancel(msg, hdr);
3855 return err;
3856}
3857
3858static int devlink_nl_cmd_info_get_doit(struct sk_buff *skb,
3859 struct genl_info *info)
3860{
3861 struct devlink *devlink = info->user_ptr[0];
3862 struct sk_buff *msg;
3863 int err;
3864
be6fe1d8 3865 if (!devlink->ops->info_get)
f9cf2288
JK		 3866 return -EOPNOTSUPP;
3867
3868 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3869 if (!msg)
3870 return -ENOMEM;
3871
3872 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
3873 info->snd_portid, info->snd_seq, 0,
3874 info->extack);
3875 if (err) {
3876 nlmsg_free(msg);
3877 return err;
3878 }
3879
3880 return genlmsg_reply(msg, info);
3881}
3882
3883static int devlink_nl_cmd_info_get_dumpit(struct sk_buff *msg,
3884 struct netlink_callback *cb)
3885{
3886 struct devlink *devlink;
3887 int start = cb->args[0];
3888 int idx = 0;
3889 int err;
3890
3891 mutex_lock(&devlink_mutex);
3892 list_for_each_entry(devlink, &devlink_list, list) {
3893 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
3894 continue;
3895 if (idx < start) {
3896 idx++;
3897 continue;
3898 }
3899
3900 mutex_lock(&devlink->lock);
3901 err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
3902 NETLINK_CB(cb->skb).portid,
3903 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3904 cb->extack);
3905 mutex_unlock(&devlink->lock);
3906 if (err)
3907 break;
3908 idx++;
3909 }
3910 mutex_unlock(&devlink_mutex);
3911
3912 cb->args[0] = idx;
3913 return msg->len;
3914}
3915
1db64e87
EBE		 3916struct devlink_fmsg_item {
3917 struct list_head list;
3918 int attrtype;
3919 u8 nla_type;
3920 u16 len;
3921 int value[0];
3922};
3923
3924struct devlink_fmsg {
3925 struct list_head item_list;
3926};
3927
3928static struct devlink_fmsg *devlink_fmsg_alloc(void)
3929{
3930 struct devlink_fmsg *fmsg;
3931
3932 fmsg = kzalloc(sizeof(*fmsg), GFP_KERNEL);
3933 if (!fmsg)
3934 return NULL;
3935
3936 INIT_LIST_HEAD(&fmsg->item_list);
3937
3938 return fmsg;
3939}
3940
3941static void devlink_fmsg_free(struct devlink_fmsg *fmsg)
3942{
3943 struct devlink_fmsg_item *item, *tmp;
3944
3945 list_for_each_entry_safe(item, tmp, &fmsg->item_list, list) {
3946 list_del(&item->list);
3947 kfree(item);
3948 }
3949 kfree(fmsg);
3950}
3951
3952static int devlink_fmsg_nest_common(struct devlink_fmsg *fmsg,
3953 int attrtype)
3954{
3955 struct devlink_fmsg_item *item;
3956
3957 item = kzalloc(sizeof(*item), GFP_KERNEL);
3958 if (!item)
3959 return -ENOMEM;
3960
3961 item->attrtype = attrtype;
3962 list_add_tail(&item->list, &fmsg->item_list);
3963
3964 return 0;
3965}
3966
3967int devlink_fmsg_obj_nest_start(struct devlink_fmsg *fmsg)
3968{
3969 return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_OBJ_NEST_START);
3970}
3971EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_start);
3972
3973static int devlink_fmsg_nest_end(struct devlink_fmsg *fmsg)
3974{
3975 return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_NEST_END);
3976}
3977
3978int devlink_fmsg_obj_nest_end(struct devlink_fmsg *fmsg)
3979{
3980 return devlink_fmsg_nest_end(fmsg);
3981}
3982EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_end);
3983
3984#define DEVLINK_FMSG_MAX_SIZE (GENLMSG_DEFAULT_SIZE - GENL_HDRLEN - NLA_HDRLEN)
3985
3986static int devlink_fmsg_put_name(struct devlink_fmsg *fmsg, const char *name)
3987{
3988 struct devlink_fmsg_item *item;
3989
3990 if (strlen(name) + 1 > DEVLINK_FMSG_MAX_SIZE)
3991 return -EMSGSIZE;
3992
3993 item = kzalloc(sizeof(*item) + strlen(name) + 1, GFP_KERNEL);
3994 if (!item)
3995 return -ENOMEM;
3996
3997 item->nla_type = NLA_NUL_STRING;
3998 item->len = strlen(name) + 1;
3999 item->attrtype = DEVLINK_ATTR_FMSG_OBJ_NAME;
4000 memcpy(&item->value, name, item->len);
4001 list_add_tail(&item->list, &fmsg->item_list);
4002
4003 return 0;
4004}
4005
4006int devlink_fmsg_pair_nest_start(struct devlink_fmsg *fmsg, const char *name)
4007{
4008 int err;
4009
4010 err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_PAIR_NEST_START);
4011 if (err)
4012 return err;
4013
4014 err = devlink_fmsg_put_name(fmsg, name);
4015 if (err)
4016 return err;
4017
4018 return 0;
4019}
4020EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_start);
4021
4022int devlink_fmsg_pair_nest_end(struct devlink_fmsg *fmsg)
4023{
4024 return devlink_fmsg_nest_end(fmsg);
4025}
4026EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_end);
4027
4028int devlink_fmsg_arr_pair_nest_start(struct devlink_fmsg *fmsg,
4029 const char *name)
4030{
4031 int err;
4032
4033 err = devlink_fmsg_pair_nest_start(fmsg, name);
4034 if (err)
4035 return err;
4036
4037 err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_ARR_NEST_START);
4038 if (err)
4039 return err;
4040
4041 return 0;
4042}
4043EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_start);
4044
4045int devlink_fmsg_arr_pair_nest_end(struct devlink_fmsg *fmsg)
4046{
4047 int err;
4048
4049 err = devlink_fmsg_nest_end(fmsg);
4050 if (err)
4051 return err;
4052
4053 err = devlink_fmsg_nest_end(fmsg);
4054 if (err)
4055 return err;
4056
4057 return 0;
4058}
4059EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_end);
4060
4061static int devlink_fmsg_put_value(struct devlink_fmsg *fmsg,
4062 const void *value, u16 value_len,
4063 u8 value_nla_type)
4064{
4065 struct devlink_fmsg_item *item;
4066
4067 if (value_len > DEVLINK_FMSG_MAX_SIZE)
4068 return -EMSGSIZE;
4069
4070 item = kzalloc(sizeof(*item) + value_len, GFP_KERNEL);
4071 if (!item)
4072 return -ENOMEM;
4073
4074 item->nla_type = value_nla_type;
4075 item->len = value_len;
4076 item->attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
4077 memcpy(&item->value, value, item->len);
4078 list_add_tail(&item->list, &fmsg->item_list);
4079
4080 return 0;
4081}
4082
4083int devlink_fmsg_bool_put(struct devlink_fmsg *fmsg, bool value)
4084{
4085 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_FLAG);
4086}
4087EXPORT_SYMBOL_GPL(devlink_fmsg_bool_put);
4088
4089int devlink_fmsg_u8_put(struct devlink_fmsg *fmsg, u8 value)
4090{
4091 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U8);
4092}
4093EXPORT_SYMBOL_GPL(devlink_fmsg_u8_put);
4094
4095int devlink_fmsg_u32_put(struct devlink_fmsg *fmsg, u32 value)
4096{
4097 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U32);
4098}
4099EXPORT_SYMBOL_GPL(devlink_fmsg_u32_put);
4100
4101int devlink_fmsg_u64_put(struct devlink_fmsg *fmsg, u64 value)
4102{
4103 return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U64);
4104}
4105EXPORT_SYMBOL_GPL(devlink_fmsg_u64_put);
4106
4107int devlink_fmsg_string_put(struct devlink_fmsg *fmsg, const char *value)
4108{
4109 return devlink_fmsg_put_value(fmsg, value, strlen(value) + 1,
4110 NLA_NUL_STRING);
4111}
4112EXPORT_SYMBOL_GPL(devlink_fmsg_string_put);
4113
4114int devlink_fmsg_binary_put(struct devlink_fmsg *fmsg, const void *value,
4115 u16 value_len)
4116{
4117 return devlink_fmsg_put_value(fmsg, value, value_len, NLA_BINARY);
4118}
4119EXPORT_SYMBOL_GPL(devlink_fmsg_binary_put);
4120
4121int devlink_fmsg_bool_pair_put(struct devlink_fmsg *fmsg, const char *name,
4122 bool value)
4123{
4124 int err;
4125
4126 err = devlink_fmsg_pair_nest_start(fmsg, name);
4127 if (err)
4128 return err;
4129
4130 err = devlink_fmsg_bool_put(fmsg, value);
4131 if (err)
4132 return err;
4133
4134 err = devlink_fmsg_pair_nest_end(fmsg);
4135 if (err)
4136 return err;
4137
4138 return 0;
4139}
4140EXPORT_SYMBOL_GPL(devlink_fmsg_bool_pair_put);
4141
4142int devlink_fmsg_u8_pair_put(struct devlink_fmsg *fmsg, const char *name,
4143 u8 value)
4144{
4145 int err;
4146
4147 err = devlink_fmsg_pair_nest_start(fmsg, name);
4148 if (err)
4149 return err;
4150
4151 err = devlink_fmsg_u8_put(fmsg, value);
4152 if (err)
4153 return err;
4154
4155 err = devlink_fmsg_pair_nest_end(fmsg);
4156 if (err)
4157 return err;
4158
4159 return 0;
4160}
4161EXPORT_SYMBOL_GPL(devlink_fmsg_u8_pair_put);
4162
4163int devlink_fmsg_u32_pair_put(struct devlink_fmsg *fmsg, const char *name,
4164 u32 value)
4165{
4166 int err;
4167
4168 err = devlink_fmsg_pair_nest_start(fmsg, name);
4169 if (err)
4170 return err;
4171
4172 err = devlink_fmsg_u32_put(fmsg, value);
4173 if (err)
4174 return err;
4175
4176 err = devlink_fmsg_pair_nest_end(fmsg);
4177 if (err)
4178 return err;
4179
4180 return 0;
4181}
4182EXPORT_SYMBOL_GPL(devlink_fmsg_u32_pair_put);
4183
4184int devlink_fmsg_u64_pair_put(struct devlink_fmsg *fmsg, const char *name,
4185 u64 value)
4186{
4187 int err;
4188
4189 err = devlink_fmsg_pair_nest_start(fmsg, name);
4190 if (err)
4191 return err;
4192
4193 err = devlink_fmsg_u64_put(fmsg, value);
4194 if (err)
4195 return err;
4196
4197 err = devlink_fmsg_pair_nest_end(fmsg);
4198 if (err)
4199 return err;
4200
4201 return 0;
4202}
4203EXPORT_SYMBOL_GPL(devlink_fmsg_u64_pair_put);
4204
4205int devlink_fmsg_string_pair_put(struct devlink_fmsg *fmsg, const char *name,
4206 const char *value)
4207{
4208 int err;
4209
4210 err = devlink_fmsg_pair_nest_start(fmsg, name);
4211 if (err)
4212 return err;
4213
4214 err = devlink_fmsg_string_put(fmsg, value);
4215 if (err)
4216 return err;
4217
4218 err = devlink_fmsg_pair_nest_end(fmsg);
4219 if (err)
4220 return err;
4221
4222 return 0;
4223}
4224EXPORT_SYMBOL_GPL(devlink_fmsg_string_pair_put);
4225
4226int devlink_fmsg_binary_pair_put(struct devlink_fmsg *fmsg, const char *name,
4227 const void *value, u16 value_len)
4228{
4229 int err;
4230
4231 err = devlink_fmsg_pair_nest_start(fmsg, name);
4232 if (err)
4233 return err;
4234
4235 err = devlink_fmsg_binary_put(fmsg, value, value_len);
4236 if (err)
4237 return err;
4238
4239 err = devlink_fmsg_pair_nest_end(fmsg);
4240 if (err)
4241 return err;
4242
4243 return 0;
4244}
4245EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_put);
4246
4247static int
4248devlink_fmsg_item_fill_type(struct devlink_fmsg_item *msg, struct sk_buff *skb)
4249{
4250 switch (msg->nla_type) {
4251 case NLA_FLAG:
4252 case NLA_U8:
4253 case NLA_U32:
4254 case NLA_U64:
4255 case NLA_NUL_STRING:
4256 case NLA_BINARY:
4257 return nla_put_u8(skb, DEVLINK_ATTR_FMSG_OBJ_VALUE_TYPE,
4258 msg->nla_type);
4259 default:
4260 return -EINVAL;
4261 }
4262}
4263
4264static int
4265devlink_fmsg_item_fill_data(struct devlink_fmsg_item *msg, struct sk_buff *skb)
4266{
4267 int attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
4268 u8 tmp;
4269
4270 switch (msg->nla_type) {
4271 case NLA_FLAG:
4272 /* Always provide flag data, regardless of its value */
4273 tmp = *(bool *) msg->value;
4274
4275 return nla_put_u8(skb, attrtype, tmp);
4276 case NLA_U8:
4277 return nla_put_u8(skb, attrtype, *(u8 *) msg->value);
4278 case NLA_U32:
4279 return nla_put_u32(skb, attrtype, *(u32 *) msg->value);
4280 case NLA_U64:
4281 return nla_put_u64_64bit(skb, attrtype, *(u64 *) msg->value,
4282 DEVLINK_ATTR_PAD);
4283 case NLA_NUL_STRING:
4284 return nla_put_string(skb, attrtype, (char *) &msg->value);
4285 case NLA_BINARY:
4286 return nla_put(skb, attrtype, msg->len, (void *) &msg->value);
4287 default:
4288 return -EINVAL;
4289 }
4290}
4291
4292static int
4293devlink_fmsg_prepare_skb(struct devlink_fmsg *fmsg, struct sk_buff *skb,
4294 int *start)
4295{
4296 struct devlink_fmsg_item *item;
4297 struct nlattr *fmsg_nlattr;
4298 int i = 0;
4299 int err;
4300
4301 fmsg_nlattr = nla_nest_start(skb, DEVLINK_ATTR_FMSG);
4302 if (!fmsg_nlattr)
4303 return -EMSGSIZE;
4304
4305 list_for_each_entry(item, &fmsg->item_list, list) {
4306 if (i < *start) {
4307 i++;
4308 continue;
4309 }
4310
4311 switch (item->attrtype) {
4312 case DEVLINK_ATTR_FMSG_OBJ_NEST_START:
4313 case DEVLINK_ATTR_FMSG_PAIR_NEST_START:
4314 case DEVLINK_ATTR_FMSG_ARR_NEST_START:
4315 case DEVLINK_ATTR_FMSG_NEST_END:
4316 err = nla_put_flag(skb, item->attrtype);
4317 break;
4318 case DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA:
4319 err = devlink_fmsg_item_fill_type(item, skb);
4320 if (err)
4321 break;
4322 err = devlink_fmsg_item_fill_data(item, skb);
4323 break;
4324 case DEVLINK_ATTR_FMSG_OBJ_NAME:
4325 err = nla_put_string(skb, item->attrtype,
4326 (char *) &item->value);
4327 break;
4328 default:
4329 err = -EINVAL;
4330 break;
4331 }
4332 if (!err)
4333 *start = ++i;
4334 else
4335 break;
4336 }
4337
4338 nla_nest_end(skb, fmsg_nlattr);
4339 return err;
4340}
4341
4342static int devlink_fmsg_snd(struct devlink_fmsg *fmsg,
4343 struct genl_info *info,
4344 enum devlink_command cmd, int flags)
4345{
4346 struct nlmsghdr *nlh;
4347 struct sk_buff *skb;
4348 bool last = false;
4349 int index = 0;
4350 void *hdr;
4351 int err;
4352
4353 while (!last) {
4354 int tmp_index = index;
4355
4356 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
4357 if (!skb)
4358 return -ENOMEM;
4359
4360 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
4361 &devlink_nl_family, flags | NLM_F_MULTI, cmd);
4362 if (!hdr) {
4363 err = -EMSGSIZE;
4364 goto nla_put_failure;
4365 }
4366
4367 err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
4368 if (!err)
4369 last = true;
4370 else if (err != -EMSGSIZE || tmp_index == index)
4371 goto nla_put_failure;
4372
4373 genlmsg_end(skb, hdr);
4374 err = genlmsg_reply(skb, info);
4375 if (err)
4376 return err;
4377 }
4378
4379 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
4380 if (!skb)
4381 return -ENOMEM;
4382 nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
4383 NLMSG_DONE, 0, flags | NLM_F_MULTI);
4384 if (!nlh) {
4385 err = -EMSGSIZE;
4386 goto nla_put_failure;
4387 }
1db64e87 4388
fde55ea7 4389 return genlmsg_reply(skb, info);
1db64e87
EBE		 4390
4391nla_put_failure:
4392 nlmsg_free(skb);
4393 return err;
4394}
4395
a0bdcc59
EBE		 4396struct devlink_health_reporter {
4397 struct list_head list;
4398 void *priv;
4399 const struct devlink_health_reporter_ops *ops;
4400 struct devlink *devlink;
c8e1da0b
EBE		 4401 struct devlink_fmsg *dump_fmsg;
4402 struct mutex dump_lock; /* lock parallel read/write from dump buffers */
a0bdcc59
EBE		 4403 u64 graceful_period;
4404 bool auto_recover;
4405 u8 health_state;
c8e1da0b
EBE		 4406 u64 dump_ts;
4407 u64 error_count;
4408 u64 recovery_count;
4409 u64 last_recovery_ts;
4410};
4411
4412enum devlink_health_reporter_state {
4413 DEVLINK_HEALTH_REPORTER_STATE_HEALTHY,
4414 DEVLINK_HEALTH_REPORTER_STATE_ERROR,
a0bdcc59
EBE		 4415};
4416
4417void *
4418devlink_health_reporter_priv(struct devlink_health_reporter *reporter)
4419{
4420 return reporter->priv;
4421}
4422EXPORT_SYMBOL_GPL(devlink_health_reporter_priv);
4423
4424static struct devlink_health_reporter *
4425devlink_health_reporter_find_by_name(struct devlink *devlink,
4426 const char *reporter_name)
4427{
4428 struct devlink_health_reporter *reporter;
4429
4430 list_for_each_entry(reporter, &devlink->reporter_list, list)
4431 if (!strcmp(reporter->ops->name, reporter_name))
4432 return reporter;
4433 return NULL;
4434}
4435
4436/**
4437 * devlink_health_reporter_create - create devlink health reporter
4438 *
4439 * @devlink: devlink
4440 * @ops: ops
4441 * @graceful_period: to avoid recovery loops, in msecs
4442 * @auto_recover: auto recover when error occurs
4443 * @priv: priv
4444 */
4445struct devlink_health_reporter *
4446devlink_health_reporter_create(struct devlink *devlink,
4447 const struct devlink_health_reporter_ops *ops,
4448 u64 graceful_period, bool auto_recover,
4449 void *priv)
4450{
4451 struct devlink_health_reporter *reporter;
4452
4453 mutex_lock(&devlink->lock);
4454 if (devlink_health_reporter_find_by_name(devlink, ops->name)) {
4455 reporter = ERR_PTR(-EEXIST);
4456 goto unlock;
4457 }
4458
4459 if (WARN_ON(auto_recover && !ops->recover) ||
4460 WARN_ON(graceful_period && !ops->recover)) {
4461 reporter = ERR_PTR(-EINVAL);
4462 goto unlock;
4463 }
4464
4465 reporter = kzalloc(sizeof(*reporter), GFP_KERNEL);
4466 if (!reporter) {
4467 reporter = ERR_PTR(-ENOMEM);
4468 goto unlock;
4469 }
4470
4471 reporter->priv = priv;
4472 reporter->ops = ops;
4473 reporter->devlink = devlink;
4474 reporter->graceful_period = graceful_period;
4475 reporter->auto_recover = auto_recover;
c8e1da0b 4476 mutex_init(&reporter->dump_lock);
a0bdcc59
EBE		 4477 list_add_tail(&reporter->list, &devlink->reporter_list);
4478unlock:
4479 mutex_unlock(&devlink->lock);
4480 return reporter;
4481}
4482EXPORT_SYMBOL_GPL(devlink_health_reporter_create);
4483
4484/**
4485 * devlink_health_reporter_destroy - destroy devlink health reporter
4486 *
4487 * @reporter: devlink health reporter to destroy
4488 */
4489void
4490devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
4491{
4492 mutex_lock(&reporter->devlink->lock);
4493 list_del(&reporter->list);
4494 mutex_unlock(&reporter->devlink->lock);
c8e1da0b
EBE		 4495 if (reporter->dump_fmsg)
4496 devlink_fmsg_free(reporter->dump_fmsg);
a0bdcc59
EBE		 4497 kfree(reporter);
4498}
4499EXPORT_SYMBOL_GPL(devlink_health_reporter_destroy);
4500
c8e1da0b
EBE		 4501static int
4502devlink_health_reporter_recover(struct devlink_health_reporter *reporter,
4503 void *priv_ctx)
4504{
4505 int err;
4506
4507 if (!reporter->ops->recover)
4508 return -EOPNOTSUPP;
4509
4510 err = reporter->ops->recover(reporter, priv_ctx);
4511 if (err)
4512 return err;
4513
4514 reporter->recovery_count++;
4515 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_HEALTHY;
4516 reporter->last_recovery_ts = jiffies;
4517
4518 return 0;
4519}
4520
4521static void
4522devlink_health_dump_clear(struct devlink_health_reporter *reporter)
4523{
4524 if (!reporter->dump_fmsg)
4525 return;
4526 devlink_fmsg_free(reporter->dump_fmsg);
4527 reporter->dump_fmsg = NULL;
4528}
4529
4530static int devlink_health_do_dump(struct devlink_health_reporter *reporter,
4531 void *priv_ctx)
4532{
4533 int err;
4534
4535 if (!reporter->ops->dump)
4536 return 0;
4537
4538 if (reporter->dump_fmsg)
4539 return 0;
4540
4541 reporter->dump_fmsg = devlink_fmsg_alloc();
4542 if (!reporter->dump_fmsg) {
4543 err = -ENOMEM;
4544 return err;
4545 }
4546
4547 err = devlink_fmsg_obj_nest_start(reporter->dump_fmsg);
4548 if (err)
4549 goto dump_err;
4550
4551 err = reporter->ops->dump(reporter, reporter->dump_fmsg,
4552 priv_ctx);
4553 if (err)
4554 goto dump_err;
4555
4556 err = devlink_fmsg_obj_nest_end(reporter->dump_fmsg);
4557 if (err)
4558 goto dump_err;
4559
4560 reporter->dump_ts = jiffies;
4561
4562 return 0;
4563
4564dump_err:
4565 devlink_health_dump_clear(reporter);
4566 return err;
4567}
4568
4569int devlink_health_report(struct devlink_health_reporter *reporter,
4570 const char *msg, void *priv_ctx)
4571{
4572 struct devlink *devlink = reporter->devlink;
4573
4574 /* write a log message of the current error */
4575 WARN_ON(!msg);
4576 trace_devlink_health_report(devlink, reporter->ops->name, msg);
4577 reporter->error_count++;
4578
4579 /* abort if the previous error wasn't recovered */
4580 if (reporter->auto_recover &&
4581 (reporter->health_state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY ||
4582 jiffies - reporter->last_recovery_ts <
4583 msecs_to_jiffies(reporter->graceful_period))) {
4584 trace_devlink_health_recover_aborted(devlink,
4585 reporter->ops->name,
4586 reporter->health_state,
4587 jiffies -
4588 reporter->last_recovery_ts);
4589 return -ECANCELED;
4590 }
4591
4592 reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
4593
4594 mutex_lock(&reporter->dump_lock);
4595 /* store current dump of current error, for later analysis */
4596 devlink_health_do_dump(reporter, priv_ctx);
4597 mutex_unlock(&reporter->dump_lock);
4598
4599 if (reporter->auto_recover)
4600 return devlink_health_reporter_recover(reporter, priv_ctx);
4601
4602 return 0;
4603}
4604EXPORT_SYMBOL_GPL(devlink_health_report);
4605
7afe335a
EBE		 4606static struct devlink_health_reporter *
4607devlink_health_reporter_get_from_info(struct devlink *devlink,
4608 struct genl_info *info)
4609{
4610 char *reporter_name;
4611
4612 if (!info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME])
4613 return NULL;
4614
4615 reporter_name =
4616 nla_data(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME]);
4617 return devlink_health_reporter_find_by_name(devlink, reporter_name);
4618}
4619
4620static int
4621devlink_nl_health_reporter_fill(struct sk_buff *msg,
4622 struct devlink *devlink,
4623 struct devlink_health_reporter *reporter,
4624 enum devlink_command cmd, u32 portid,
4625 u32 seq, int flags)
4626{
4627 struct nlattr *reporter_attr;
4628 void *hdr;
4629
4630 hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
4631 if (!hdr)
4632 return -EMSGSIZE;
4633
4634 if (devlink_nl_put_handle(msg, devlink))
4635 goto genlmsg_cancel;
4636
4637 reporter_attr = nla_nest_start(msg, DEVLINK_ATTR_HEALTH_REPORTER);
4638 if (!reporter_attr)
4639 goto genlmsg_cancel;
4640 if (nla_put_string(msg, DEVLINK_ATTR_HEALTH_REPORTER_NAME,
4641 reporter->ops->name))
4642 goto reporter_nest_cancel;
4643 if (nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_STATE,
4644 reporter->health_state))
4645 goto reporter_nest_cancel;
54719527 4646 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_ERR_COUNT,
7afe335a
EBE		 4647 reporter->error_count, DEVLINK_ATTR_PAD))
4648 goto reporter_nest_cancel;
54719527 4649 if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_RECOVER_COUNT,
7afe335a
EBE		 4650 reporter->recovery_count, DEVLINK_ATTR_PAD))
4651 goto reporter_nest_cancel;
574b1e1f
AL		 4652 if (reporter->ops->recover &&
4653 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD,
7afe335a
EBE		 4654 reporter->graceful_period,
4655 DEVLINK_ATTR_PAD))
4656 goto reporter_nest_cancel;
574b1e1f
AL		 4657 if (reporter->ops->recover &&
4658 nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER,
7afe335a
EBE		 4659 reporter->auto_recover))
4660 goto reporter_nest_cancel;
4661 if (reporter->dump_fmsg &&
4662 nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS,
4663 jiffies_to_msecs(reporter->dump_ts),
4664 DEVLINK_ATTR_PAD))
4665 goto reporter_nest_cancel;
4666
4667 nla_nest_end(msg, reporter_attr);
4668 genlmsg_end(msg, hdr);
4669 return 0;
4670
4671reporter_nest_cancel:
4672 nla_nest_end(msg, reporter_attr);
4673genlmsg_cancel:
4674 genlmsg_cancel(msg, hdr);
4675 return -EMSGSIZE;
4676}
4677
4678static int devlink_nl_cmd_health_reporter_get_doit(struct sk_buff *skb,
4679 struct genl_info *info)
4680{
4681 struct devlink *devlink = info->user_ptr[0];
4682 struct devlink_health_reporter *reporter;
4683 struct sk_buff *msg;
4684 int err;
4685
4686 reporter = devlink_health_reporter_get_from_info(devlink, info);
4687 if (!reporter)
4688 return -EINVAL;
4689
4690 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4691 if (!msg)
4692 return -ENOMEM;
4693
4694 err = devlink_nl_health_reporter_fill(msg, devlink, reporter,
4695 DEVLINK_CMD_HEALTH_REPORTER_GET,
4696 info->snd_portid, info->snd_seq,
4697 0);
4698 if (err) {
4699 nlmsg_free(msg);
4700 return err;
4701 }
4702
4703 return genlmsg_reply(msg, info);
4704}
4705
4706static int
4707devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg,
4708 struct netlink_callback *cb)
4709{
4710 struct devlink_health_reporter *reporter;
4711 struct devlink *devlink;
4712 int start = cb->args[0];
4713 int idx = 0;
4714 int err;
4715
4716 mutex_lock(&devlink_mutex);
4717 list_for_each_entry(devlink, &devlink_list, list) {
4718 if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
4719 continue;
4720 mutex_lock(&devlink->lock);
4721 list_for_each_entry(reporter, &devlink->reporter_list,
4722 list) {
4723 if (idx < start) {
4724 idx++;
4725 continue;
4726 }
4727 err = devlink_nl_health_reporter_fill(msg, devlink,
4728 reporter,
4729 DEVLINK_CMD_HEALTH_REPORTER_GET,
4730 NETLINK_CB(cb->skb).portid,
4731 cb->nlh->nlmsg_seq,
4732 NLM_F_MULTI);
4733 if (err) {
4734 mutex_unlock(&devlink->lock);
4735 goto out;
4736 }
4737 idx++;
4738 }
4739 mutex_unlock(&devlink->lock);
4740 }
4741out:
4742 mutex_unlock(&devlink_mutex);
4743
4744 cb->args[0] = idx;
4745 return msg->len;
4746}
4747
a1e55ec0
EBE		 4748static int
4749devlink_nl_cmd_health_reporter_set_doit(struct sk_buff *skb,
4750 struct genl_info *info)
4751{
4752 struct devlink *devlink = info->user_ptr[0];
4753 struct devlink_health_reporter *reporter;
4754
4755 reporter = devlink_health_reporter_get_from_info(devlink, info);
4756 if (!reporter)
4757 return -EINVAL;
4758
4759 if (!reporter->ops->recover &&
4760 (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] ||
4761 info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER]))
4762 return -EOPNOTSUPP;
4763
4764 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD])
4765 reporter->graceful_period =
4766 nla_get_u64(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD]);
4767
4768 if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])
4769 reporter->auto_recover =
4770 nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER]);
4771
4772 return 0;
4773}
4774
20a0943a
EBE		 4775static int devlink_nl_cmd_health_reporter_recover_doit(struct sk_buff *skb,
4776 struct genl_info *info)
4777{
4778 struct devlink *devlink = info->user_ptr[0];
4779 struct devlink_health_reporter *reporter;
4780
4781 reporter = devlink_health_reporter_get_from_info(devlink, info);
4782 if (!reporter)
4783 return -EINVAL;
4784
4785 return devlink_health_reporter_recover(reporter, NULL);
4786}
4787
fca42a27
EBE		 4788static int devlink_nl_cmd_health_reporter_diagnose_doit(struct sk_buff *skb,
4789 struct genl_info *info)
4790{
4791 struct devlink *devlink = info->user_ptr[0];
4792 struct devlink_health_reporter *reporter;
4793 struct devlink_fmsg *fmsg;
4794 int err;
4795
4796 reporter = devlink_health_reporter_get_from_info(devlink, info);
4797 if (!reporter)
4798 return -EINVAL;
4799
4800 if (!reporter->ops->diagnose)
4801 return -EOPNOTSUPP;
4802
4803 fmsg = devlink_fmsg_alloc();
4804 if (!fmsg)
4805 return -ENOMEM;
4806
4807 err = devlink_fmsg_obj_nest_start(fmsg);
4808 if (err)
4809 goto out;
4810
4811 err = reporter->ops->diagnose(reporter, fmsg);
4812 if (err)
4813 goto out;
4814
4815 err = devlink_fmsg_obj_nest_end(fmsg);
4816 if (err)
4817 goto out;
4818
4819 err = devlink_fmsg_snd(fmsg, info,
4820 DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE, 0);
4821
4822out:
4823 devlink_fmsg_free(fmsg);
4824 return err;
4825}
4826
35455e23
EBE		 4827static int devlink_nl_cmd_health_reporter_dump_get_doit(struct sk_buff *skb,
4828 struct genl_info *info)
4829{
4830 struct devlink *devlink = info->user_ptr[0];
4831 struct devlink_health_reporter *reporter;
4832 int err;
4833
4834 reporter = devlink_health_reporter_get_from_info(devlink, info);
4835 if (!reporter)
4836 return -EINVAL;
4837
4838 if (!reporter->ops->dump)
4839 return -EOPNOTSUPP;
4840
4841 mutex_lock(&reporter->dump_lock);
4842 err = devlink_health_do_dump(reporter, NULL);
4843 if (err)
4844 goto out;
4845
4846 err = devlink_fmsg_snd(reporter->dump_fmsg, info,
4847 DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET, 0);
4848
4849out:
4850 mutex_unlock(&reporter->dump_lock);
4851 return err;
4852}
4853
4854static int
4855devlink_nl_cmd_health_reporter_dump_clear_doit(struct sk_buff *skb,
4856 struct genl_info *info)
4857{
4858 struct devlink *devlink = info->user_ptr[0];
4859 struct devlink_health_reporter *reporter;
4860
4861 reporter = devlink_health_reporter_get_from_info(devlink, info);
4862 if (!reporter)
4863 return -EINVAL;
4864
4865 if (!reporter->ops->dump)
4866 return -EOPNOTSUPP;
4867
4868 mutex_lock(&reporter->dump_lock);
4869 devlink_health_dump_clear(reporter);
4870 mutex_unlock(&reporter->dump_lock);
4871 return 0;
4872}
4873
bfcd3a46
JP		 4874static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = {
4875 [DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING },
4876 [DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING },
4877 [DEVLINK_ATTR_PORT_INDEX] = { .type = NLA_U32 },
4878 [DEVLINK_ATTR_PORT_TYPE] = { .type = NLA_U16 },
4879 [DEVLINK_ATTR_PORT_SPLIT_COUNT] = { .type = NLA_U32 },
bf797471
JP		 4880 [DEVLINK_ATTR_SB_INDEX] = { .type = NLA_U32 },
4881 [DEVLINK_ATTR_SB_POOL_INDEX] = { .type = NLA_U16 },
4882 [DEVLINK_ATTR_SB_POOL_TYPE] = { .type = NLA_U8 },
4883 [DEVLINK_ATTR_SB_POOL_SIZE] = { .type = NLA_U32 },
4884 [DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE] = { .type = NLA_U8 },
4885 [DEVLINK_ATTR_SB_THRESHOLD] = { .type = NLA_U32 },
4886 [DEVLINK_ATTR_SB_TC_INDEX] = { .type = NLA_U16 },
08f4b591 4887 [DEVLINK_ATTR_ESWITCH_MODE] = { .type = NLA_U16 },
59bfde01 4888 [DEVLINK_ATTR_ESWITCH_INLINE_MODE] = { .type = NLA_U8 },
f43e9b06 4889 [DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = { .type = NLA_U8 },
1555d204
AS		 4890 [DEVLINK_ATTR_DPIPE_TABLE_NAME] = { .type = NLA_NUL_STRING },
4891 [DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED] = { .type = NLA_U8 },
d9f9b9a4
AS		 4892 [DEVLINK_ATTR_RESOURCE_ID] = { .type = NLA_U64},
4893 [DEVLINK_ATTR_RESOURCE_SIZE] = { .type = NLA_U64},
e3b7ca18
MS		 4894 [DEVLINK_ATTR_PARAM_NAME] = { .type = NLA_NUL_STRING },
4895 [DEVLINK_ATTR_PARAM_TYPE] = { .type = NLA_U8 },
4896 [DEVLINK_ATTR_PARAM_VALUE_CMODE] = { .type = NLA_U8 },
d8db7ea5 4897 [DEVLINK_ATTR_REGION_NAME] = { .type = NLA_NUL_STRING },
866319bb 4898 [DEVLINK_ATTR_REGION_SNAPSHOT_ID] = { .type = NLA_U32 },
7afe335a 4899 [DEVLINK_ATTR_HEALTH_REPORTER_NAME] = { .type = NLA_NUL_STRING },
a1e55ec0
EBE		 4900 [DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] = { .type = NLA_U64 },
4901 [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER] = { .type = NLA_U8 },
76726ccb
JK		 4902 [DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME] = { .type = NLA_NUL_STRING },
4903 [DEVLINK_ATTR_FLASH_UPDATE_COMPONENT] = { .type = NLA_NUL_STRING },
bfcd3a46
JP		 4904};
4905
4906static const struct genl_ops devlink_nl_ops[] = {
4907 {
4908 .cmd = DEVLINK_CMD_GET,
4909 .doit = devlink_nl_cmd_get_doit,
4910 .dumpit = devlink_nl_cmd_get_dumpit,
4911 .policy = devlink_nl_policy,
1fc2257e 4912 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
bfcd3a46
JP		 4913 /* can be retrieved by unprivileged users */
4914 },
4915 {
4916 .cmd = DEVLINK_CMD_PORT_GET,
4917 .doit = devlink_nl_cmd_port_get_doit,
4918 .dumpit = devlink_nl_cmd_port_get_dumpit,
4919 .policy = devlink_nl_policy,
4920 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
4921 /* can be retrieved by unprivileged users */
4922 },
4923 {
4924 .cmd = DEVLINK_CMD_PORT_SET,
4925 .doit = devlink_nl_cmd_port_set_doit,
4926 .policy = devlink_nl_policy,
4927 .flags = GENL_ADMIN_PERM,
4928 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
4929 },
4930 {
4931 .cmd = DEVLINK_CMD_PORT_SPLIT,
4932 .doit = devlink_nl_cmd_port_split_doit,
4933 .policy = devlink_nl_policy,
4934 .flags = GENL_ADMIN_PERM,
2406e7e5
AS		 4935 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
4936 DEVLINK_NL_FLAG_NO_LOCK,
bfcd3a46
JP		 4937 },
4938 {
4939 .cmd = DEVLINK_CMD_PORT_UNSPLIT,
4940 .doit = devlink_nl_cmd_port_unsplit_doit,
4941 .policy = devlink_nl_policy,
4942 .flags = GENL_ADMIN_PERM,
2406e7e5
AS		 4943 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
4944 DEVLINK_NL_FLAG_NO_LOCK,
bfcd3a46 4945 },
bf797471
JP		 4946 {
4947 .cmd = DEVLINK_CMD_SB_GET,
4948 .doit = devlink_nl_cmd_sb_get_doit,
4949 .dumpit = devlink_nl_cmd_sb_get_dumpit,
4950 .policy = devlink_nl_policy,
4951 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
4952 DEVLINK_NL_FLAG_NEED_SB,
4953 /* can be retrieved by unprivileged users */
4954 },
4955 {
4956 .cmd = DEVLINK_CMD_SB_POOL_GET,
4957 .doit = devlink_nl_cmd_sb_pool_get_doit,
4958 .dumpit = devlink_nl_cmd_sb_pool_get_dumpit,
4959 .policy = devlink_nl_policy,
4960 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
4961 DEVLINK_NL_FLAG_NEED_SB,
4962 /* can be retrieved by unprivileged users */
4963 },
4964 {
4965 .cmd = DEVLINK_CMD_SB_POOL_SET,
4966 .doit = devlink_nl_cmd_sb_pool_set_doit,
4967 .policy = devlink_nl_policy,
4968 .flags = GENL_ADMIN_PERM,
4969 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
4970 DEVLINK_NL_FLAG_NEED_SB,
4971 },
4972 {
4973 .cmd = DEVLINK_CMD_SB_PORT_POOL_GET,
4974 .doit = devlink_nl_cmd_sb_port_pool_get_doit,
4975 .dumpit = devlink_nl_cmd_sb_port_pool_get_dumpit,
4976 .policy = devlink_nl_policy,
4977 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
4978 DEVLINK_NL_FLAG_NEED_SB,
4979 /* can be retrieved by unprivileged users */
4980 },
4981 {
4982 .cmd = DEVLINK_CMD_SB_PORT_POOL_SET,
4983 .doit = devlink_nl_cmd_sb_port_pool_set_doit,
4984 .policy = devlink_nl_policy,
4985 .flags = GENL_ADMIN_PERM,
4986 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
4987 DEVLINK_NL_FLAG_NEED_SB,
4988 },
4989 {
4990 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_GET,
4991 .doit = devlink_nl_cmd_sb_tc_pool_bind_get_doit,
4992 .dumpit = devlink_nl_cmd_sb_tc_pool_bind_get_dumpit,
4993 .policy = devlink_nl_policy,
4994 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
4995 DEVLINK_NL_FLAG_NEED_SB,
4996 /* can be retrieved by unprivileged users */
4997 },
4998 {
4999 .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_SET,
5000 .doit = devlink_nl_cmd_sb_tc_pool_bind_set_doit,
5001 .policy = devlink_nl_policy,
5002 .flags = GENL_ADMIN_PERM,
5003 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
5004 DEVLINK_NL_FLAG_NEED_SB,
5005 },
df38dafd
JP		 5006 {
5007 .cmd = DEVLINK_CMD_SB_OCC_SNAPSHOT,
5008 .doit = devlink_nl_cmd_sb_occ_snapshot_doit,
5009 .policy = devlink_nl_policy,
5010 .flags = GENL_ADMIN_PERM,
5011 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
2406e7e5 5012 DEVLINK_NL_FLAG_NEED_SB,
df38dafd
JP		 5013 },
5014 {
5015 .cmd = DEVLINK_CMD_SB_OCC_MAX_CLEAR,
5016 .doit = devlink_nl_cmd_sb_occ_max_clear_doit,
5017 .policy = devlink_nl_policy,
5018 .flags = GENL_ADMIN_PERM,
5019 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
2406e7e5 5020 DEVLINK_NL_FLAG_NEED_SB,
df38dafd 5021 },
08f4b591 5022 {
adf200f3
JP		 5023 .cmd = DEVLINK_CMD_ESWITCH_GET,
5024 .doit = devlink_nl_cmd_eswitch_get_doit,
08f4b591
OG		 5025 .policy = devlink_nl_policy,
5026 .flags = GENL_ADMIN_PERM,
5027 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
5028 },
5029 {
adf200f3
JP		 5030 .cmd = DEVLINK_CMD_ESWITCH_SET,
5031 .doit = devlink_nl_cmd_eswitch_set_doit,
08f4b591
OG		 5032 .policy = devlink_nl_policy,
5033 .flags = GENL_ADMIN_PERM,
7ac1cc9a
JK		 5034 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
5035 DEVLINK_NL_FLAG_NO_LOCK,
08f4b591 5036 },
1555d204
AS		 5037 {
5038 .cmd = DEVLINK_CMD_DPIPE_TABLE_GET,
5039 .doit = devlink_nl_cmd_dpipe_table_get,
5040 .policy = devlink_nl_policy,
1555d204 5041 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
67ae686b 5042 /* can be retrieved by unprivileged users */
1555d204
AS		 5043 },
5044 {
5045 .cmd = DEVLINK_CMD_DPIPE_ENTRIES_GET,
5046 .doit = devlink_nl_cmd_dpipe_entries_get,
5047 .policy = devlink_nl_policy,
1555d204 5048 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
67ae686b 5049 /* can be retrieved by unprivileged users */
1555d204
AS		 5050 },
5051 {
5052 .cmd = DEVLINK_CMD_DPIPE_HEADERS_GET,
5053 .doit = devlink_nl_cmd_dpipe_headers_get,
5054 .policy = devlink_nl_policy,
1555d204 5055 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
67ae686b 5056 /* can be retrieved by unprivileged users */
1555d204
AS		 5057 },
5058 {
5059 .cmd = DEVLINK_CMD_DPIPE_TABLE_COUNTERS_SET,
5060 .doit = devlink_nl_cmd_dpipe_table_counters_set,
5061 .policy = devlink_nl_policy,
5062 .flags = GENL_ADMIN_PERM,
5063 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
5064 },
d9f9b9a4
AS		 5065 {
5066 .cmd = DEVLINK_CMD_RESOURCE_SET,
5067 .doit = devlink_nl_cmd_resource_set,
5068 .policy = devlink_nl_policy,
5069 .flags = GENL_ADMIN_PERM,
5070 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
5071 },
5072 {
5073 .cmd = DEVLINK_CMD_RESOURCE_DUMP,
5074 .doit = devlink_nl_cmd_resource_dump,
5075 .policy = devlink_nl_policy,
d9f9b9a4 5076 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
67ae686b 5077 /* can be retrieved by unprivileged users */
d9f9b9a4 5078 },
2d8dc5bb
AS		 5079 {
5080 .cmd = DEVLINK_CMD_RELOAD,
5081 .doit = devlink_nl_cmd_reload,
5082 .policy = devlink_nl_policy,
5083 .flags = GENL_ADMIN_PERM,
5084 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
5085 DEVLINK_NL_FLAG_NO_LOCK,
5086 },
45f05def
MS		 5087 {
5088 .cmd = DEVLINK_CMD_PARAM_GET,
5089 .doit = devlink_nl_cmd_param_get_doit,
5090 .dumpit = devlink_nl_cmd_param_get_dumpit,
5091 .policy = devlink_nl_policy,
5092 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
5093 /* can be retrieved by unprivileged users */
5094 },
e3b7ca18
MS		 5095 {
5096 .cmd = DEVLINK_CMD_PARAM_SET,
5097 .doit = devlink_nl_cmd_param_set_doit,
5098 .policy = devlink_nl_policy,
5099 .flags = GENL_ADMIN_PERM,
5100 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
5101 },
f4601dee
VV		 5102 {
5103 .cmd = DEVLINK_CMD_PORT_PARAM_GET,
5104 .doit = devlink_nl_cmd_port_param_get_doit,
5105 .dumpit = devlink_nl_cmd_port_param_get_dumpit,
5106 .policy = devlink_nl_policy,
5107 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
5108 /* can be retrieved by unprivileged users */
5109 },
9c54873b
VV		 5110 {
5111 .cmd = DEVLINK_CMD_PORT_PARAM_SET,
5112 .doit = devlink_nl_cmd_port_param_set_doit,
5113 .policy = devlink_nl_policy,
5114 .flags = GENL_ADMIN_PERM,
5115 .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
5116 },
d8db7ea5
AV		 5117 {
5118 .cmd = DEVLINK_CMD_REGION_GET,
5119 .doit = devlink_nl_cmd_region_get_doit,
5120 .dumpit = devlink_nl_cmd_region_get_dumpit,
5121 .policy = devlink_nl_policy,
5122 .flags = GENL_ADMIN_PERM,
5123 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
5124 },
866319bb
AV		 5125 {
5126 .cmd = DEVLINK_CMD_REGION_DEL,
5127 .doit = devlink_nl_cmd_region_del,
5128 .policy = devlink_nl_policy,
5129 .flags = GENL_ADMIN_PERM,
5130 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
5131 },
4e54795a
AV		 5132 {
5133 .cmd = DEVLINK_CMD_REGION_READ,
5134 .dumpit = devlink_nl_cmd_region_read_dumpit,
5135 .policy = devlink_nl_policy,
5136 .flags = GENL_ADMIN_PERM,
5137 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
5138 },
f9cf2288
JK		 5139 {
5140 .cmd = DEVLINK_CMD_INFO_GET,
5141 .doit = devlink_nl_cmd_info_get_doit,
5142 .dumpit = devlink_nl_cmd_info_get_dumpit,
5143 .policy = devlink_nl_policy,
5144 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
5145 /* can be retrieved by unprivileged users */
5146 },
7afe335a
EBE		 5147 {
5148 .cmd = DEVLINK_CMD_HEALTH_REPORTER_GET,
5149 .doit = devlink_nl_cmd_health_reporter_get_doit,
5150 .dumpit = devlink_nl_cmd_health_reporter_get_dumpit,
5151 .policy = devlink_nl_policy,
5152 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
5153 /* can be retrieved by unprivileged users */
5154 },
a1e55ec0
EBE		 5155 {
5156 .cmd = DEVLINK_CMD_HEALTH_REPORTER_SET,
5157 .doit = devlink_nl_cmd_health_reporter_set_doit,
5158 .policy = devlink_nl_policy,
5159 .flags = GENL_ADMIN_PERM,
5160 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
5161 },
20a0943a
EBE		 5162 {
5163 .cmd = DEVLINK_CMD_HEALTH_REPORTER_RECOVER,
5164 .doit = devlink_nl_cmd_health_reporter_recover_doit,
5165 .policy = devlink_nl_policy,
5166 .flags = GENL_ADMIN_PERM,
5167 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
5168 },
fca42a27
EBE		 5169 {
5170 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE,
5171 .doit = devlink_nl_cmd_health_reporter_diagnose_doit,
5172 .policy = devlink_nl_policy,
5173 .flags = GENL_ADMIN_PERM,
5174 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
5175 },
35455e23
EBE		 5176 {
5177 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET,
5178 .doit = devlink_nl_cmd_health_reporter_dump_get_doit,
5179 .policy = devlink_nl_policy,
5180 .flags = GENL_ADMIN_PERM,
5181 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
5182 DEVLINK_NL_FLAG_NO_LOCK,
5183 },
5184 {
5185 .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_CLEAR,
5186 .doit = devlink_nl_cmd_health_reporter_dump_clear_doit,
5187 .policy = devlink_nl_policy,
5188 .flags = GENL_ADMIN_PERM,
5189 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
5190 DEVLINK_NL_FLAG_NO_LOCK,
5191 },
76726ccb
JK		 5192 {
5193 .cmd = DEVLINK_CMD_FLASH_UPDATE,
5194 .doit = devlink_nl_cmd_flash_update,
5195 .policy = devlink_nl_policy,
5196 .flags = GENL_ADMIN_PERM,
5197 .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
5198 },
bfcd3a46
JP		 5199};
5200
56989f6d 5201static struct genl_family devlink_nl_family __ro_after_init = {
489111e5
JB		 5202 .name = DEVLINK_GENL_NAME,
5203 .version = DEVLINK_GENL_VERSION,
5204 .maxattr = DEVLINK_ATTR_MAX,
5205 .netnsok = true,
5206 .pre_doit = devlink_nl_pre_doit,
5207 .post_doit = devlink_nl_post_doit,
5208 .module = THIS_MODULE,
5209 .ops = devlink_nl_ops,
5210 .n_ops = ARRAY_SIZE(devlink_nl_ops),
5211 .mcgrps = devlink_nl_mcgrps,
5212 .n_mcgrps = ARRAY_SIZE(devlink_nl_mcgrps),
5213};
5214
bfcd3a46
JP		 5215/**
5216 * devlink_alloc - Allocate new devlink instance resources
5217 *
5218 * @ops: ops
5219 * @priv_size: size of user private data
5220 *
5221 * Allocate new devlink instance resources, including devlink index
5222 * and name.
5223 */
5224struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size)
5225{
5226 struct devlink *devlink;
5227
be6fe1d8
JK		 5228 if (WARN_ON(!ops))
5229 return NULL;
5230
bfcd3a46
JP		 5231 devlink = kzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL);
5232 if (!devlink)
5233 return NULL;
5234 devlink->ops = ops;
5235 devlink_net_set(devlink, &init_net);
5236 INIT_LIST_HEAD(&devlink->port_list);
bf797471 5237 INIT_LIST_HEAD(&devlink->sb_list);
1555d204 5238 INIT_LIST_HEAD_RCU(&devlink->dpipe_table_list);
d9f9b9a4 5239 INIT_LIST_HEAD(&devlink->resource_list);
eabaef18 5240 INIT_LIST_HEAD(&devlink->param_list);
b16ebe92 5241 INIT_LIST_HEAD(&devlink->region_list);
a0bdcc59 5242 INIT_LIST_HEAD(&devlink->reporter_list);
2406e7e5 5243 mutex_init(&devlink->lock);
bfcd3a46
JP		 5244 return devlink;
5245}
5246EXPORT_SYMBOL_GPL(devlink_alloc);
5247
5248/**
5249 * devlink_register - Register devlink instance
5250 *
5251 * @devlink: devlink
eeaadd82 5252 * @dev: parent device
bfcd3a46
JP		 5253 */
5254int devlink_register(struct devlink *devlink, struct device *dev)
5255{
5256 mutex_lock(&devlink_mutex);
5257 devlink->dev = dev;
5258 list_add_tail(&devlink->list, &devlink_list);
5259 devlink_notify(devlink, DEVLINK_CMD_NEW);
5260 mutex_unlock(&devlink_mutex);
5261 return 0;
5262}
5263EXPORT_SYMBOL_GPL(devlink_register);
5264
5265/**
5266 * devlink_unregister - Unregister devlink instance
5267 *
5268 * @devlink: devlink
5269 */
5270void devlink_unregister(struct devlink *devlink)
5271{
5272 mutex_lock(&devlink_mutex);
5273 devlink_notify(devlink, DEVLINK_CMD_DEL);
5274 list_del(&devlink->list);
5275 mutex_unlock(&devlink_mutex);
5276}
5277EXPORT_SYMBOL_GPL(devlink_unregister);
5278
5279/**
5280 * devlink_free - Free devlink instance resources
5281 *
5282 * @devlink: devlink
5283 */
5284void devlink_free(struct devlink *devlink)
5285{
b904aada
PP		 5286 WARN_ON(!list_empty(&devlink->reporter_list));
5287 WARN_ON(!list_empty(&devlink->region_list));
5288 WARN_ON(!list_empty(&devlink->param_list));
5289 WARN_ON(!list_empty(&devlink->resource_list));
5290 WARN_ON(!list_empty(&devlink->dpipe_table_list));
5291 WARN_ON(!list_empty(&devlink->sb_list));
5292 WARN_ON(!list_empty(&devlink->port_list));
5293
bfcd3a46
JP		 5294 kfree(devlink);
5295}
5296EXPORT_SYMBOL_GPL(devlink_free);
5297
5298/**
5299 * devlink_port_register - Register devlink port
5300 *
5301 * @devlink: devlink
5302 * @devlink_port: devlink port
eeaadd82 5303 * @port_index: driver-specific numerical identifier of the port
bfcd3a46
JP		 5304 *
5305 * Register devlink port with provided port index. User can use
5306 * any indexing, even hw-related one. devlink_port structure
5307 * is convenient to be embedded inside user driver private structure.
5308 * Note that the caller should take care of zeroing the devlink_port
5309 * structure.
5310 */
5311int devlink_port_register(struct devlink *devlink,
5312 struct devlink_port *devlink_port,
5313 unsigned int port_index)
5314{
2406e7e5 5315 mutex_lock(&devlink->lock);
bfcd3a46 5316 if (devlink_port_index_exists(devlink, port_index)) {
2406e7e5 5317 mutex_unlock(&devlink->lock);
bfcd3a46
JP		 5318 return -EEXIST;
5319 }
5320 devlink_port->devlink = devlink;
5321 devlink_port->index = port_index;
bfcd3a46
JP		 5322 devlink_port->registered = true;
5323 list_add_tail(&devlink_port->list, &devlink->port_list);
39e6160e 5324 INIT_LIST_HEAD(&devlink_port->param_list);
2406e7e5 5325 mutex_unlock(&devlink->lock);
bfcd3a46
JP		 5326 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
5327 return 0;
5328}
5329EXPORT_SYMBOL_GPL(devlink_port_register);
5330
5331/**
5332 * devlink_port_unregister - Unregister devlink port
5333 *
5334 * @devlink_port: devlink port
5335 */
5336void devlink_port_unregister(struct devlink_port *devlink_port)
5337{
2406e7e5
AS		 5338 struct devlink *devlink = devlink_port->devlink;
5339
bfcd3a46 5340 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
2406e7e5 5341 mutex_lock(&devlink->lock);
bfcd3a46 5342 list_del(&devlink_port->list);
2406e7e5 5343 mutex_unlock(&devlink->lock);
bfcd3a46
JP		 5344}
5345EXPORT_SYMBOL_GPL(devlink_port_unregister);
5346
5347static void __devlink_port_type_set(struct devlink_port *devlink_port,
5348 enum devlink_port_type type,
5349 void *type_dev)
5350{
5351 devlink_port->type = type;
5352 devlink_port->type_dev = type_dev;
5353 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
5354}
5355
5356/**
5357 * devlink_port_type_eth_set - Set port type to Ethernet
5358 *
5359 * @devlink_port: devlink port
5360 * @netdev: related netdevice
5361 */
5362void devlink_port_type_eth_set(struct devlink_port *devlink_port,
5363 struct net_device *netdev)
5364{
5365 return __devlink_port_type_set(devlink_port,
5366 DEVLINK_PORT_TYPE_ETH, netdev);
5367}
5368EXPORT_SYMBOL_GPL(devlink_port_type_eth_set);
5369
5370/**
5371 * devlink_port_type_ib_set - Set port type to InfiniBand
5372 *
5373 * @devlink_port: devlink port
5374 * @ibdev: related IB device
5375 */
5376void devlink_port_type_ib_set(struct devlink_port *devlink_port,
5377 struct ib_device *ibdev)
5378{
5379 return __devlink_port_type_set(devlink_port,
5380 DEVLINK_PORT_TYPE_IB, ibdev);
5381}
5382EXPORT_SYMBOL_GPL(devlink_port_type_ib_set);
5383
5384/**
5385 * devlink_port_type_clear - Clear port type
5386 *
5387 * @devlink_port: devlink port
5388 */
5389void devlink_port_type_clear(struct devlink_port *devlink_port)
5390{
5391 return __devlink_port_type_set(devlink_port,
5392 DEVLINK_PORT_TYPE_NOTSET, NULL);
5393}
5394EXPORT_SYMBOL_GPL(devlink_port_type_clear);
5395
5396/**
b9ffcbaf 5397 * devlink_port_attrs_set - Set port attributes
bfcd3a46
JP		 5398 *
5399 * @devlink_port: devlink port
5ec1380a 5400 * @flavour: flavour of the port
b9ffcbaf
JP		 5401 * @port_number: number of the port that is facing user, for example
5402 * the front panel port number
5403 * @split: indicates if this is split port
5404 * @split_subport_number: if the port is split, this is the number
5405 * of subport.
bfcd3a46 5406 */
b9ffcbaf 5407void devlink_port_attrs_set(struct devlink_port *devlink_port,
5ec1380a 5408 enum devlink_port_flavour flavour,
b9ffcbaf
JP		 5409 u32 port_number, bool split,
5410 u32 split_subport_number)
bfcd3a46 5411{
b9ffcbaf
JP		 5412 struct devlink_port_attrs *attrs = &devlink_port->attrs;
5413
5414 attrs->set = true;
5ec1380a 5415 attrs->flavour = flavour;
b9ffcbaf
JP		 5416 attrs->port_number = port_number;
5417 attrs->split = split;
5418 attrs->split_subport_number = split_subport_number;
bfcd3a46
JP		 5419 devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
5420}
b9ffcbaf 5421EXPORT_SYMBOL_GPL(devlink_port_attrs_set);
bfcd3a46 5422
08474c1a
JP		 5423int devlink_port_get_phys_port_name(struct devlink_port *devlink_port,
5424 char *name, size_t len)
5425{
5426 struct devlink_port_attrs *attrs = &devlink_port->attrs;
5427 int n = 0;
5428
5429 if (!attrs->set)
5430 return -EOPNOTSUPP;
5431
5432 switch (attrs->flavour) {
5433 case DEVLINK_PORT_FLAVOUR_PHYSICAL:
5434 if (!attrs->split)
5435 n = snprintf(name, len, "p%u", attrs->port_number);
5436 else
5437 n = snprintf(name, len, "p%us%u", attrs->port_number,
5438 attrs->split_subport_number);
5439 break;
5440 case DEVLINK_PORT_FLAVOUR_CPU:
5441 case DEVLINK_PORT_FLAVOUR_DSA:
5442 /* As CPU and DSA ports do not have a netdevice associated
5443 * case should not ever happen.
5444 */
5445 WARN_ON(1);
5446 return -EINVAL;
5447 }
5448
5449 if (n >= len)
5450 return -EINVAL;
5451
5452 return 0;
5453}
5454EXPORT_SYMBOL_GPL(devlink_port_get_phys_port_name);
5455
bf797471
JP		 5456int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
5457 u32 size, u16 ingress_pools_count,
5458 u16 egress_pools_count, u16 ingress_tc_count,
5459 u16 egress_tc_count)
5460{
5461 struct devlink_sb *devlink_sb;
5462 int err = 0;
5463
2406e7e5 5464 mutex_lock(&devlink->lock);
bf797471
JP		 5465 if (devlink_sb_index_exists(devlink, sb_index)) {
5466 err = -EEXIST;
5467 goto unlock;
5468 }
5469
5470 devlink_sb = kzalloc(sizeof(*devlink_sb), GFP_KERNEL);
5471 if (!devlink_sb) {
5472 err = -ENOMEM;
5473 goto unlock;
5474 }
5475 devlink_sb->index = sb_index;
5476 devlink_sb->size = size;
5477 devlink_sb->ingress_pools_count = ingress_pools_count;
5478 devlink_sb->egress_pools_count = egress_pools_count;
5479 devlink_sb->ingress_tc_count = ingress_tc_count;
5480 devlink_sb->egress_tc_count = egress_tc_count;
5481 list_add_tail(&devlink_sb->list, &devlink->sb_list);
5482unlock:
2406e7e5 5483 mutex_unlock(&devlink->lock);
bf797471
JP		 5484 return err;
5485}
5486EXPORT_SYMBOL_GPL(devlink_sb_register);
5487
5488void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index)
5489{
5490 struct devlink_sb *devlink_sb;
5491
2406e7e5 5492 mutex_lock(&devlink->lock);
bf797471
JP		 5493 devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
5494 WARN_ON(!devlink_sb);
5495 list_del(&devlink_sb->list);
2406e7e5 5496 mutex_unlock(&devlink->lock);
bf797471
JP		 5497 kfree(devlink_sb);
5498}
5499EXPORT_SYMBOL_GPL(devlink_sb_unregister);
5500
1555d204
AS		 5501/**
5502 * devlink_dpipe_headers_register - register dpipe headers
5503 *
5504 * @devlink: devlink
5505 * @dpipe_headers: dpipe header array
5506 *
5507 * Register the headers supported by hardware.
5508 */
5509int devlink_dpipe_headers_register(struct devlink *devlink,
5510 struct devlink_dpipe_headers *dpipe_headers)
5511{
2406e7e5 5512 mutex_lock(&devlink->lock);
1555d204 5513 devlink->dpipe_headers = dpipe_headers;
2406e7e5 5514 mutex_unlock(&devlink->lock);
1555d204
AS		 5515 return 0;
5516}
5517EXPORT_SYMBOL_GPL(devlink_dpipe_headers_register);
5518
5519/**
5520 * devlink_dpipe_headers_unregister - unregister dpipe headers
5521 *
5522 * @devlink: devlink
5523 *
5524 * Unregister the headers supported by hardware.
5525 */
5526void devlink_dpipe_headers_unregister(struct devlink *devlink)
5527{
2406e7e5 5528 mutex_lock(&devlink->lock);
1555d204 5529 devlink->dpipe_headers = NULL;
2406e7e5 5530 mutex_unlock(&devlink->lock);
1555d204
AS		 5531}
5532EXPORT_SYMBOL_GPL(devlink_dpipe_headers_unregister);
5533
5534/**
5535 * devlink_dpipe_table_counter_enabled - check if counter allocation
5536 * required
5537 * @devlink: devlink
5538 * @table_name: tables name
5539 *
5540 * Used by driver to check if counter allocation is required.
5541 * After counter allocation is turned on the table entries
5542 * are updated to include counter statistics.
5543 *
5544 * After that point on the driver must respect the counter
5545 * state so that each entry added to the table is added
5546 * with a counter.
5547 */
5548bool devlink_dpipe_table_counter_enabled(struct devlink *devlink,
5549 const char *table_name)
5550{
5551 struct devlink_dpipe_table *table;
5552 bool enabled;
5553
5554 rcu_read_lock();
5555 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
5556 table_name);
5557 enabled = false;
5558 if (table)
5559 enabled = table->counters_enabled;
5560 rcu_read_unlock();
5561 return enabled;
5562}
5563EXPORT_SYMBOL_GPL(devlink_dpipe_table_counter_enabled);
5564
5565/**
5566 * devlink_dpipe_table_register - register dpipe table
5567 *
5568 * @devlink: devlink
5569 * @table_name: table name
5570 * @table_ops: table ops
5571 * @priv: priv
1555d204
AS		 5572 * @counter_control_extern: external control for counters
5573 */
5574int devlink_dpipe_table_register(struct devlink *devlink,
5575 const char *table_name,
5576 struct devlink_dpipe_table_ops *table_ops,
ffd3cdcc 5577 void *priv, bool counter_control_extern)
1555d204
AS		 5578{
5579 struct devlink_dpipe_table *table;
5580
5581 if (devlink_dpipe_table_find(&devlink->dpipe_table_list, table_name))
5582 return -EEXIST;
5583
ffd3cdcc
AS		 5584 if (WARN_ON(!table_ops->size_get))
5585 return -EINVAL;
5586
1555d204
AS		 5587 table = kzalloc(sizeof(*table), GFP_KERNEL);
5588 if (!table)
5589 return -ENOMEM;
5590
5591 table->name = table_name;
5592 table->table_ops = table_ops;
5593 table->priv = priv;
1555d204
AS		 5594 table->counter_control_extern = counter_control_extern;
5595
2406e7e5 5596 mutex_lock(&devlink->lock);
1555d204 5597 list_add_tail_rcu(&table->list, &devlink->dpipe_table_list);
2406e7e5 5598 mutex_unlock(&devlink->lock);
1555d204
AS		 5599 return 0;
5600}
5601EXPORT_SYMBOL_GPL(devlink_dpipe_table_register);
5602
5603/**
5604 * devlink_dpipe_table_unregister - unregister dpipe table
5605 *
5606 * @devlink: devlink
5607 * @table_name: table name
5608 */
5609void devlink_dpipe_table_unregister(struct devlink *devlink,
5610 const char *table_name)
5611{
5612 struct devlink_dpipe_table *table;
5613
2406e7e5 5614 mutex_lock(&devlink->lock);
1555d204
AS		 5615 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
5616 table_name);
5617 if (!table)
5618 goto unlock;
5619 list_del_rcu(&table->list);
2406e7e5 5620 mutex_unlock(&devlink->lock);
1555d204
AS		 5621 kfree_rcu(table, rcu);
5622 return;
5623unlock:
2406e7e5 5624 mutex_unlock(&devlink->lock);
1555d204
AS		 5625}
5626EXPORT_SYMBOL_GPL(devlink_dpipe_table_unregister);
5627
d9f9b9a4
AS		 5628/**
5629 * devlink_resource_register - devlink resource register
5630 *
5631 * @devlink: devlink
5632 * @resource_name: resource's name
d9f9b9a4
AS		 5633 * @resource_size: resource's size
5634 * @resource_id: resource's id
eeaadd82
JK		 5635 * @parent_resource_id: resource's parent id
5636 * @size_params: size parameters
d9f9b9a4
AS		 5637 */
5638int devlink_resource_register(struct devlink *devlink,
5639 const char *resource_name,
d9f9b9a4
AS		 5640 u64 resource_size,
5641 u64 resource_id,
5642 u64 parent_resource_id,
fc56be47 5643 const struct devlink_resource_size_params *size_params)
d9f9b9a4
AS		 5644{
5645 struct devlink_resource *resource;
5646 struct list_head *resource_list;
14530746 5647 bool top_hierarchy;
d9f9b9a4
AS		 5648 int err = 0;
5649
14530746
DA		 5650 top_hierarchy = parent_resource_id == DEVLINK_RESOURCE_ID_PARENT_TOP;
5651
d9f9b9a4
AS		 5652 mutex_lock(&devlink->lock);
5653 resource = devlink_resource_find(devlink, NULL, resource_id);
5654 if (resource) {
5655 err = -EINVAL;
5656 goto out;
5657 }
5658
5659 resource = kzalloc(sizeof(*resource), GFP_KERNEL);
5660 if (!resource) {
5661 err = -ENOMEM;
5662 goto out;
5663 }
5664
5665 if (top_hierarchy) {
5666 resource_list = &devlink->resource_list;
5667 } else {
5668 struct devlink_resource *parent_resource;
5669
5670 parent_resource = devlink_resource_find(devlink, NULL,
5671 parent_resource_id);
5672 if (parent_resource) {
5673 resource_list = &parent_resource->resource_list;
5674 resource->parent = parent_resource;
5675 } else {
b75703de 5676 kfree(resource);
d9f9b9a4
AS		 5677 err = -EINVAL;
5678 goto out;
5679 }
5680 }
5681
5682 resource->name = resource_name;
5683 resource->size = resource_size;
5684 resource->size_new = resource_size;
5685 resource->id = resource_id;
d9f9b9a4 5686 resource->size_valid = true;
77d27096
JP		 5687 memcpy(&resource->size_params, size_params,
5688 sizeof(resource->size_params));
d9f9b9a4
AS		 5689 INIT_LIST_HEAD(&resource->resource_list);
5690 list_add_tail(&resource->list, resource_list);
5691out:
5692 mutex_unlock(&devlink->lock);
5693 return err;
5694}
5695EXPORT_SYMBOL_GPL(devlink_resource_register);
5696
5697/**
5698 * devlink_resources_unregister - free all resources
5699 *
5700 * @devlink: devlink
5701 * @resource: resource
5702 */
5703void devlink_resources_unregister(struct devlink *devlink,
5704 struct devlink_resource *resource)
5705{
5706 struct devlink_resource *tmp, *child_resource;
5707 struct list_head *resource_list;
5708
5709 if (resource)
5710 resource_list = &resource->resource_list;
5711 else
5712 resource_list = &devlink->resource_list;
5713
5714 if (!resource)
5715 mutex_lock(&devlink->lock);
5716
5717 list_for_each_entry_safe(child_resource, tmp, resource_list, list) {
5718 devlink_resources_unregister(devlink, child_resource);
5719 list_del(&child_resource->list);
5720 kfree(child_resource);
5721 }
5722
5723 if (!resource)
5724 mutex_unlock(&devlink->lock);
5725}
5726EXPORT_SYMBOL_GPL(devlink_resources_unregister);
5727
5728/**
5729 * devlink_resource_size_get - get and update size
5730 *
5731 * @devlink: devlink
5732 * @resource_id: the requested resource id
5733 * @p_resource_size: ptr to update
5734 */
5735int devlink_resource_size_get(struct devlink *devlink,
5736 u64 resource_id,
5737 u64 *p_resource_size)
5738{
5739 struct devlink_resource *resource;
5740 int err = 0;
5741
5742 mutex_lock(&devlink->lock);
5743 resource = devlink_resource_find(devlink, NULL, resource_id);
5744 if (!resource) {
5745 err = -EINVAL;
5746 goto out;
5747 }
5748 *p_resource_size = resource->size_new;
5749 resource->size = resource->size_new;
5750out:
5751 mutex_unlock(&devlink->lock);
5752 return err;
5753}
5754EXPORT_SYMBOL_GPL(devlink_resource_size_get);
5755
56dc7cd0
AS		 5756/**
5757 * devlink_dpipe_table_resource_set - set the resource id
5758 *
5759 * @devlink: devlink
5760 * @table_name: table name
5761 * @resource_id: resource id
5762 * @resource_units: number of resource's units consumed per table's entry
5763 */
5764int devlink_dpipe_table_resource_set(struct devlink *devlink,
5765 const char *table_name, u64 resource_id,
5766 u64 resource_units)
5767{
5768 struct devlink_dpipe_table *table;
5769 int err = 0;
5770
5771 mutex_lock(&devlink->lock);
5772 table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
5773 table_name);
5774 if (!table) {
5775 err = -EINVAL;
5776 goto out;
5777 }
5778 table->resource_id = resource_id;
5779 table->resource_units = resource_units;
5780 table->resource_valid = true;
5781out:
5782 mutex_unlock(&devlink->lock);
5783 return err;
5784}
5785EXPORT_SYMBOL_GPL(devlink_dpipe_table_resource_set);
5786
fc56be47
JP		 5787/**
5788 * devlink_resource_occ_get_register - register occupancy getter
5789 *
5790 * @devlink: devlink
5791 * @resource_id: resource id
5792 * @occ_get: occupancy getter callback
5793 * @occ_get_priv: occupancy getter callback priv
5794 */
5795void devlink_resource_occ_get_register(struct devlink *devlink,
5796 u64 resource_id,
5797 devlink_resource_occ_get_t *occ_get,
5798 void *occ_get_priv)
5799{
5800 struct devlink_resource *resource;
5801
5802 mutex_lock(&devlink->lock);
5803 resource = devlink_resource_find(devlink, NULL, resource_id);
5804 if (WARN_ON(!resource))
5805 goto out;
5806 WARN_ON(resource->occ_get);
5807
5808 resource->occ_get = occ_get;
5809 resource->occ_get_priv = occ_get_priv;
5810out:
5811 mutex_unlock(&devlink->lock);
5812}
5813EXPORT_SYMBOL_GPL(devlink_resource_occ_get_register);
5814
5815/**
5816 * devlink_resource_occ_get_unregister - unregister occupancy getter
5817 *
5818 * @devlink: devlink
5819 * @resource_id: resource id
5820 */
5821void devlink_resource_occ_get_unregister(struct devlink *devlink,
5822 u64 resource_id)
5823{
5824 struct devlink_resource *resource;
5825
5826 mutex_lock(&devlink->lock);
5827 resource = devlink_resource_find(devlink, NULL, resource_id);
5828 if (WARN_ON(!resource))
5829 goto out;
5830 WARN_ON(!resource->occ_get);
5831
5832 resource->occ_get = NULL;
5833 resource->occ_get_priv = NULL;
5834out:
5835 mutex_unlock(&devlink->lock);
5836}
5837EXPORT_SYMBOL_GPL(devlink_resource_occ_get_unregister);
5838
39e6160e
VV		 5839static int devlink_param_verify(const struct devlink_param *param)
5840{
5841 if (!param || !param->name || !param->supported_cmodes)
5842 return -EINVAL;
5843 if (param->generic)
5844 return devlink_param_generic_verify(param);
5845 else
5846 return devlink_param_driver_verify(param);
5847}
5848
5849static int __devlink_params_register(struct devlink *devlink,
c1e5786d 5850 unsigned int port_index,
39e6160e
VV		 5851 struct list_head *param_list,
5852 const struct devlink_param *params,
c1e5786d
VV		 5853 size_t params_count,
5854 enum devlink_command reg_cmd,
5855 enum devlink_command unreg_cmd)
eabaef18
MS		 5856{
5857 const struct devlink_param *param = params;
5858 int i;
5859 int err;
5860
5861 mutex_lock(&devlink->lock);
5862 for (i = 0; i < params_count; i++, param++) {
39e6160e
VV		 5863 err = devlink_param_verify(param);
5864 if (err)
eabaef18 5865 goto rollback;
39e6160e 5866
c1e5786d
VV		 5867 err = devlink_param_register_one(devlink, port_index,
5868 param_list, param, reg_cmd);
eabaef18
MS		 5869 if (err)
5870 goto rollback;
5871 }
5872
5873 mutex_unlock(&devlink->lock);
5874 return 0;
5875
5876rollback:
5877 if (!i)
5878 goto unlock;
5879 for (param--; i > 0; i--, param--)
c1e5786d
VV		 5880 devlink_param_unregister_one(devlink, port_index, param_list,
5881 param, unreg_cmd);
eabaef18
MS		 5882unlock:
5883 mutex_unlock(&devlink->lock);
5884 return err;
5885}
39e6160e
VV		 5886
5887static void __devlink_params_unregister(struct devlink *devlink,
c1e5786d 5888 unsigned int port_index,
39e6160e
VV		 5889 struct list_head *param_list,
5890 const struct devlink_param *params,
c1e5786d
VV		 5891 size_t params_count,
5892 enum devlink_command cmd)
39e6160e
VV		 5893{
5894 const struct devlink_param *param = params;
5895 int i;
5896
5897 mutex_lock(&devlink->lock);
5898 for (i = 0; i < params_count; i++, param++)
c1e5786d
VV		 5899 devlink_param_unregister_one(devlink, 0, param_list, param,
5900 cmd);
39e6160e
VV		 5901 mutex_unlock(&devlink->lock);
5902}
5903
5904/**
5905 * devlink_params_register - register configuration parameters
5906 *
5907 * @devlink: devlink
5908 * @params: configuration parameters array
5909 * @params_count: number of parameters provided
5910 *
5911 * Register the configuration parameters supported by the driver.
5912 */
5913int devlink_params_register(struct devlink *devlink,
5914 const struct devlink_param *params,
5915 size_t params_count)
5916{
c1e5786d
VV		 5917 return __devlink_params_register(devlink, 0, &devlink->param_list,
5918 params, params_count,
5919 DEVLINK_CMD_PARAM_NEW,
5920 DEVLINK_CMD_PARAM_DEL);
39e6160e 5921}
eabaef18
MS		 5922EXPORT_SYMBOL_GPL(devlink_params_register);
5923
5924/**
5925 * devlink_params_unregister - unregister configuration parameters
5926 * @devlink: devlink
5927 * @params: configuration parameters to unregister
5928 * @params_count: number of parameters provided
5929 */
5930void devlink_params_unregister(struct devlink *devlink,
5931 const struct devlink_param *params,
5932 size_t params_count)
5933{
c1e5786d
VV		 5934 return __devlink_params_unregister(devlink, 0, &devlink->param_list,
5935 params, params_count,
5936 DEVLINK_CMD_PARAM_DEL);
eabaef18
MS		 5937}
5938EXPORT_SYMBOL_GPL(devlink_params_unregister);
5939
7c62cfb8
JP		 5940/**
5941 * devlink_params_publish - publish configuration parameters
5942 *
5943 * @devlink: devlink
5944 *
5945 * Publish previously registered configuration parameters.
5946 */
5947void devlink_params_publish(struct devlink *devlink)
5948{
5949 struct devlink_param_item *param_item;
5950
5951 list_for_each_entry(param_item, &devlink->param_list, list) {
5952 if (param_item->published)
5953 continue;
5954 param_item->published = true;
5955 devlink_param_notify(devlink, 0, param_item,
5956 DEVLINK_CMD_PARAM_NEW);
5957 }
5958}
5959EXPORT_SYMBOL_GPL(devlink_params_publish);
5960
5961/**
5962 * devlink_params_unpublish - unpublish configuration parameters
5963 *
5964 * @devlink: devlink
5965 *
5966 * Unpublish previously registered configuration parameters.
5967 */
5968void devlink_params_unpublish(struct devlink *devlink)
5969{
5970 struct devlink_param_item *param_item;
5971
5972 list_for_each_entry(param_item, &devlink->param_list, list) {
5973 if (!param_item->published)
5974 continue;
5975 param_item->published = false;
5976 devlink_param_notify(devlink, 0, param_item,
5977 DEVLINK_CMD_PARAM_DEL);
5978 }
5979}
5980EXPORT_SYMBOL_GPL(devlink_params_unpublish);
5981
39e6160e
VV		 5982/**
5983 * devlink_port_params_register - register port configuration parameters
5984 *
5985 * @devlink_port: devlink port
5986 * @params: configuration parameters array
5987 * @params_count: number of parameters provided
5988 *
5989 * Register the configuration parameters supported by the port.
5990 */
5991int devlink_port_params_register(struct devlink_port *devlink_port,
5992 const struct devlink_param *params,
5993 size_t params_count)
5994{
5995 return __devlink_params_register(devlink_port->devlink,
c1e5786d 5996 devlink_port->index,
39e6160e 5997 &devlink_port->param_list, params,
c1e5786d
VV		 5998 params_count,
5999 DEVLINK_CMD_PORT_PARAM_NEW,
6000 DEVLINK_CMD_PORT_PARAM_DEL);
39e6160e
VV		 6001}
6002EXPORT_SYMBOL_GPL(devlink_port_params_register);
6003
6004/**
6005 * devlink_port_params_unregister - unregister port configuration
6006 * parameters
6007 *
6008 * @devlink_port: devlink port
6009 * @params: configuration parameters array
6010 * @params_count: number of parameters provided
6011 */
6012void devlink_port_params_unregister(struct devlink_port *devlink_port,
6013 const struct devlink_param *params,
6014 size_t params_count)
6015{
6016 return __devlink_params_unregister(devlink_port->devlink,
c1e5786d 6017 devlink_port->index,
39e6160e 6018 &devlink_port->param_list,
c1e5786d
VV		 6019 params, params_count,
6020 DEVLINK_CMD_PORT_PARAM_DEL);
39e6160e
VV		 6021}
6022EXPORT_SYMBOL_GPL(devlink_port_params_unregister);
6023
ffd19b9a
VV		 6024static int
6025__devlink_param_driverinit_value_get(struct list_head *param_list, u32 param_id,
6026 union devlink_param_value *init_val)
ec01aeb1
MS		 6027{
6028 struct devlink_param_item *param_item;
6029
ffd19b9a 6030 param_item = devlink_param_find_by_id(param_list, param_id);
ec01aeb1
MS		 6031 if (!param_item)
6032 return -EINVAL;
6033
6034 if (!param_item->driverinit_value_valid ||
6035 !devlink_param_cmode_is_supported(param_item->param,
6036 DEVLINK_PARAM_CMODE_DRIVERINIT))
6037 return -EOPNOTSUPP;
6038
1276534c
MS		 6039 if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
6040 strcpy(init_val->vstr, param_item->driverinit_value.vstr);
6041 else
6042 *init_val = param_item->driverinit_value;
ec01aeb1
MS		 6043
6044 return 0;
6045}
ffd19b9a 6046
5473a7bd
VV		 6047static int
6048__devlink_param_driverinit_value_set(struct devlink *devlink,
c1e5786d 6049 unsigned int port_index,
5473a7bd
VV		 6050 struct list_head *param_list, u32 param_id,
6051 union devlink_param_value init_val,
6052 enum devlink_command cmd)
6053{
6054 struct devlink_param_item *param_item;
6055
6056 param_item = devlink_param_find_by_id(param_list, param_id);
6057 if (!param_item)
6058 return -EINVAL;
6059
6060 if (!devlink_param_cmode_is_supported(param_item->param,
6061 DEVLINK_PARAM_CMODE_DRIVERINIT))
6062 return -EOPNOTSUPP;
6063
6064 if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
6065 strcpy(param_item->driverinit_value.vstr, init_val.vstr);
6066 else
6067 param_item->driverinit_value = init_val;
6068 param_item->driverinit_value_valid = true;
6069
c1e5786d 6070 devlink_param_notify(devlink, port_index, param_item, cmd);
5473a7bd
VV		 6071 return 0;
6072}
6073
ffd19b9a
VV		 6074/**
6075 * devlink_param_driverinit_value_get - get configuration parameter
6076 * value for driver initializing
6077 *
6078 * @devlink: devlink
6079 * @param_id: parameter ID
6080 * @init_val: value of parameter in driverinit configuration mode
6081 *
6082 * This function should be used by the driver to get driverinit
6083 * configuration for initialization after reload command.
6084 */
6085int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
6086 union devlink_param_value *init_val)
6087{
be6fe1d8 6088 if (!devlink->ops->reload)
ffd19b9a
VV		 6089 return -EOPNOTSUPP;
6090
6091 return __devlink_param_driverinit_value_get(&devlink->param_list,
6092 param_id, init_val);
6093}
ec01aeb1
MS		 6094EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_get);
6095
6096/**
6097 * devlink_param_driverinit_value_set - set value of configuration
6098 * parameter for driverinit
6099 * configuration mode
6100 *
6101 * @devlink: devlink
6102 * @param_id: parameter ID
6103 * @init_val: value of parameter to set for driverinit configuration mode
6104 *
6105 * This function should be used by the driver to set driverinit
6106 * configuration mode default value.
6107 */
6108int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
6109 union devlink_param_value init_val)
6110{
c1e5786d 6111 return __devlink_param_driverinit_value_set(devlink, 0,
5473a7bd
VV		 6112 &devlink->param_list,
6113 param_id, init_val,
6114 DEVLINK_CMD_PARAM_NEW);
ec01aeb1
MS		 6115}
6116EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_set);
6117
ffd19b9a
VV		 6118/**
6119 * devlink_port_param_driverinit_value_get - get configuration parameter
6120 * value for driver initializing
6121 *
6122 * @devlink_port: devlink_port
6123 * @param_id: parameter ID
6124 * @init_val: value of parameter in driverinit configuration mode
6125 *
6126 * This function should be used by the driver to get driverinit
6127 * configuration for initialization after reload command.
6128 */
6129int devlink_port_param_driverinit_value_get(struct devlink_port *devlink_port,
6130 u32 param_id,
6131 union devlink_param_value *init_val)
6132{
6133 struct devlink *devlink = devlink_port->devlink;
6134
be6fe1d8 6135 if (!devlink->ops->reload)
ffd19b9a
VV		 6136 return -EOPNOTSUPP;
6137
6138 return __devlink_param_driverinit_value_get(&devlink_port->param_list,
6139 param_id, init_val);
6140}
6141EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_get);
6142
5473a7bd
VV		 6143/**
6144 * devlink_port_param_driverinit_value_set - set value of configuration
6145 * parameter for driverinit
6146 * configuration mode
6147 *
6148 * @devlink_port: devlink_port
6149 * @param_id: parameter ID
6150 * @init_val: value of parameter to set for driverinit configuration mode
6151 *
6152 * This function should be used by the driver to set driverinit
6153 * configuration mode default value.
6154 */
6155int devlink_port_param_driverinit_value_set(struct devlink_port *devlink_port,
6156 u32 param_id,
6157 union devlink_param_value init_val)
6158{
6159 return __devlink_param_driverinit_value_set(devlink_port->devlink,
c1e5786d 6160 devlink_port->index,
5473a7bd 6161 &devlink_port->param_list,
c1e5786d
VV		 6162 param_id, init_val,
6163 DEVLINK_CMD_PORT_PARAM_NEW);
5473a7bd
VV		 6164}
6165EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_set);
6166
ea601e17
MS		 6167/**
6168 * devlink_param_value_changed - notify devlink on a parameter's value
6169 * change. Should be called by the driver
6170 * right after the change.
6171 *
6172 * @devlink: devlink
6173 * @param_id: parameter ID
6174 *
6175 * This function should be used by the driver to notify devlink on value
6176 * change, excluding driverinit configuration mode.
6177 * For driverinit configuration mode driver should use the function
ea601e17
MS		 6178 */
6179void devlink_param_value_changed(struct devlink *devlink, u32 param_id)
6180{
6181 struct devlink_param_item *param_item;
6182
6183 param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
6184 WARN_ON(!param_item);
6185
c1e5786d 6186 devlink_param_notify(devlink, 0, param_item, DEVLINK_CMD_PARAM_NEW);
ea601e17
MS		 6187}
6188EXPORT_SYMBOL_GPL(devlink_param_value_changed);
6189
c1e5786d
VV		 6190/**
6191 * devlink_port_param_value_changed - notify devlink on a parameter's value
6192 * change. Should be called by the driver
6193 * right after the change.
6194 *
6195 * @devlink_port: devlink_port
6196 * @param_id: parameter ID
6197 *
6198 * This function should be used by the driver to notify devlink on value
6199 * change, excluding driverinit configuration mode.
6200 * For driverinit configuration mode driver should use the function
6201 * devlink_port_param_driverinit_value_set() instead.
6202 */
6203void devlink_port_param_value_changed(struct devlink_port *devlink_port,
6204 u32 param_id)
6205{
6206 struct devlink_param_item *param_item;
6207
6208 param_item = devlink_param_find_by_id(&devlink_port->param_list,
6209 param_id);
6210 WARN_ON(!param_item);
6211
6212 devlink_param_notify(devlink_port->devlink, devlink_port->index,
6213 param_item, DEVLINK_CMD_PORT_PARAM_NEW);
6214}
6215EXPORT_SYMBOL_GPL(devlink_port_param_value_changed);
6216
bde74ad1
MS		 6217/**
6218 * devlink_param_value_str_fill - Safely fill-up the string preventing
6219 * from overflow of the preallocated buffer
6220 *
6221 * @dst_val: destination devlink_param_value
6222 * @src: source buffer
6223 */
6224void devlink_param_value_str_fill(union devlink_param_value *dst_val,
6225 const char *src)
6226{
6227 size_t len;
6228
6229 len = strlcpy(dst_val->vstr, src, __DEVLINK_PARAM_MAX_STRING_VALUE);
6230 WARN_ON(len >= __DEVLINK_PARAM_MAX_STRING_VALUE);
6231}
6232EXPORT_SYMBOL_GPL(devlink_param_value_str_fill);
6233
b16ebe92
AV		 6234/**
6235 * devlink_region_create - create a new address region
6236 *
6237 * @devlink: devlink
6238 * @region_name: region name
6239 * @region_max_snapshots: Maximum supported number of snapshots for region
6240 * @region_size: size of region
6241 */
6242struct devlink_region *devlink_region_create(struct devlink *devlink,
6243 const char *region_name,
6244 u32 region_max_snapshots,
6245 u64 region_size)
6246{
6247 struct devlink_region *region;
6248 int err = 0;
6249
6250 mutex_lock(&devlink->lock);
6251
6252 if (devlink_region_get_by_name(devlink, region_name)) {
6253 err = -EEXIST;
6254 goto unlock;
6255 }
6256
6257 region = kzalloc(sizeof(*region), GFP_KERNEL);
6258 if (!region) {
6259 err = -ENOMEM;
6260 goto unlock;
6261 }
6262
6263 region->devlink = devlink;
6264 region->max_snapshots = region_max_snapshots;
6265 region->name = region_name;
6266 region->size = region_size;
6267 INIT_LIST_HEAD(&region->snapshot_list);
6268 list_add_tail(&region->list, &devlink->region_list);
866319bb 6269 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
b16ebe92
AV		 6270
6271 mutex_unlock(&devlink->lock);
6272 return region;
6273
6274unlock:
6275 mutex_unlock(&devlink->lock);
6276 return ERR_PTR(err);
6277}
6278EXPORT_SYMBOL_GPL(devlink_region_create);
6279
6280/**
6281 * devlink_region_destroy - destroy address region
6282 *
6283 * @region: devlink region to destroy
6284 */
6285void devlink_region_destroy(struct devlink_region *region)
6286{
6287 struct devlink *devlink = region->devlink;
d7e52722 6288 struct devlink_snapshot *snapshot, *ts;
b16ebe92
AV		 6289
6290 mutex_lock(&devlink->lock);
d7e52722
AV		 6291
6292 /* Free all snapshots of region */
6293 list_for_each_entry_safe(snapshot, ts, &region->snapshot_list, list)
6294 devlink_region_snapshot_del(snapshot);
6295
b16ebe92 6296 list_del(&region->list);
866319bb
AV		 6297
6298 devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL);
b16ebe92
AV		 6299 mutex_unlock(&devlink->lock);
6300 kfree(region);
6301}
6302EXPORT_SYMBOL_GPL(devlink_region_destroy);
6303
ccadfa44
AV		 6304/**
6305 * devlink_region_shapshot_id_get - get snapshot ID
6306 *
6307 * This callback should be called when adding a new snapshot,
6308 * Driver should use the same id for multiple snapshots taken
6309 * on multiple regions at the same time/by the same trigger.
6310 *
6311 * @devlink: devlink
6312 */
6313u32 devlink_region_shapshot_id_get(struct devlink *devlink)
6314{
6315 u32 id;
6316
6317 mutex_lock(&devlink->lock);
6318 id = ++devlink->snapshot_id;
6319 mutex_unlock(&devlink->lock);
6320
6321 return id;
6322}
6323EXPORT_SYMBOL_GPL(devlink_region_shapshot_id_get);
6324
d7e52722
AV		 6325/**
6326 * devlink_region_snapshot_create - create a new snapshot
6327 * This will add a new snapshot of a region. The snapshot
6328 * will be stored on the region struct and can be accessed
6329 * from devlink. This is useful for future analyses of snapshots.
6330 * Multiple snapshots can be created on a region.
6331 * The @snapshot_id should be obtained using the getter function.
6332 *
eeaadd82 6333 * @region: devlink region of the snapshot
d7e52722
AV		 6334 * @data_len: size of snapshot data
6335 * @data: snapshot data
6336 * @snapshot_id: snapshot id to be created
6337 * @data_destructor: pointer to destructor function to free data
6338 */
6339int devlink_region_snapshot_create(struct devlink_region *region, u64 data_len,
6340 u8 *data, u32 snapshot_id,
6341 devlink_snapshot_data_dest_t *data_destructor)
6342{
6343 struct devlink *devlink = region->devlink;
6344 struct devlink_snapshot *snapshot;
6345 int err;
6346
6347 mutex_lock(&devlink->lock);
6348
6349 /* check if region can hold one more snapshot */
6350 if (region->cur_snapshots == region->max_snapshots) {
6351 err = -ENOMEM;
6352 goto unlock;
6353 }
6354
6355 if (devlink_region_snapshot_get_by_id(region, snapshot_id)) {
6356 err = -EEXIST;
6357 goto unlock;
6358 }
6359
6360 snapshot = kzalloc(sizeof(*snapshot), GFP_KERNEL);
6361 if (!snapshot) {
6362 err = -ENOMEM;
6363 goto unlock;
6364 }
6365
6366 snapshot->id = snapshot_id;
6367 snapshot->region = region;
6368 snapshot->data = data;
6369 snapshot->data_len = data_len;
6370 snapshot->data_destructor = data_destructor;
6371
6372 list_add_tail(&snapshot->list, &region->snapshot_list);
6373
6374 region->cur_snapshots++;
6375
866319bb 6376 devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_NEW);
d7e52722
AV		 6377 mutex_unlock(&devlink->lock);
6378 return 0;
6379
6380unlock:
6381 mutex_unlock(&devlink->lock);
6382 return err;
6383}
6384EXPORT_SYMBOL_GPL(devlink_region_snapshot_create);
6385
ddb6e99e
JK		 6386static void __devlink_compat_running_version(struct devlink *devlink,
6387 char *buf, size_t len)
6388{
6389 const struct nlattr *nlattr;
6390 struct devlink_info_req req;
6391 struct sk_buff *msg;
6392 int rem, err;
6393
ddb6e99e
JK		 6394 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6395 if (!msg)
6396 return;
6397
6398 req.msg = msg;
6399 err = devlink->ops->info_get(devlink, &req, NULL);
6400 if (err)
6401 goto free_msg;
6402
6403 nla_for_each_attr(nlattr, (void *)msg->data, msg->len, rem) {
6404 const struct nlattr *kv;
6405 int rem_kv;
6406
6407 if (nla_type(nlattr) != DEVLINK_ATTR_INFO_VERSION_RUNNING)
6408 continue;
6409
6410 nla_for_each_nested(kv, nlattr, rem_kv) {
6411 if (nla_type(kv) != DEVLINK_ATTR_INFO_VERSION_VALUE)
6412 continue;
6413
6414 strlcat(buf, nla_data(kv), len);
6415 strlcat(buf, " ", len);
6416 }
6417 }
6418free_msg:
6419 nlmsg_free(msg);
6420}
6421
6422void devlink_compat_running_version(struct net_device *dev,
6423 char *buf, size_t len)
6424{
ddb6e99e
JK		 6425 struct devlink *devlink;
6426
1b45ff6c
JK		 6427 dev_hold(dev);
6428 rtnl_unlock();
6429
ddb6e99e 6430 mutex_lock(&devlink_mutex);
b473b0d2 6431 devlink = netdev_to_devlink(dev);
be6fe1d8 6432 if (!devlink || !devlink->ops->info_get)
b473b0d2
JK		 6433 goto unlock_list;
6434
6435 mutex_lock(&devlink->lock);
6436 __devlink_compat_running_version(devlink, buf, len);
6437 mutex_unlock(&devlink->lock);
6438unlock_list:
ddb6e99e 6439 mutex_unlock(&devlink_mutex);
1b45ff6c
JK		 6440
6441 rtnl_lock();
6442 dev_put(dev);
ddb6e99e
JK		 6443}
6444
4eceba17
JK		 6445int devlink_compat_flash_update(struct net_device *dev, const char *file_name)
6446{
4eceba17 6447 struct devlink *devlink;
b473b0d2 6448 int ret = -EOPNOTSUPP;
4eceba17 6449
1b45ff6c
JK		 6450 dev_hold(dev);
6451 rtnl_unlock();
6452
4eceba17 6453 mutex_lock(&devlink_mutex);
b473b0d2 6454 devlink = netdev_to_devlink(dev);
be6fe1d8 6455 if (!devlink || !devlink->ops->flash_update)
b473b0d2 6456 goto unlock_list;
4eceba17 6457
b473b0d2
JK		 6458 mutex_lock(&devlink->lock);
6459 ret = devlink->ops->flash_update(devlink, file_name, NULL, NULL);
6460 mutex_unlock(&devlink->lock);
6461unlock_list:
4eceba17 6462 mutex_unlock(&devlink_mutex);
1b45ff6c
JK		 6463
6464 rtnl_lock();
6465 dev_put(dev);
6466
b473b0d2 6467 return ret;
4eceba17
JK		 6468}
6469
f4b6bcc7 6470static int __init devlink_init(void)
bfcd3a46 6471{
489111e5 6472 return genl_register_family(&devlink_nl_family);
bfcd3a46
JP		 6473}
6474
f4b6bcc7 6475subsys_initcall(devlink_init);
Linux 6.x block layer and io_uring tree(s)